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authorLinus Torvalds <torvalds@linux-foundation.org>2013-07-13 12:57:21 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-07-13 12:57:21 -0700
commitc55244137306b626bc64023fd7160985443205a7 (patch)
tree459acfb5c9b41e3e1616fb36aafda68a07ddbf54
parent858655116bfc722837e3aec0909b8e9d08f96996 (diff)
parente04abfa2436e3ab016b23eb1afb2c5578b8dc2cf (diff)
downloadlinux-c55244137306b626bc64023fd7160985443205a7.tar.gz
Merge tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband
Pull InfiniBand/RDMA changes from Roland Dreier: - AF_IB (native IB addressing) for CMA from Sean Hefty - new mlx5 driver for Mellanox Connect-IB adapters (including post merge request fixes) - SRP fixes from Bart Van Assche (including fix to first merge request) - qib HW driver updates - resurrection of ocrdma HW driver development - uverbs conversion to create fds with O_CLOEXEC set - other small changes and fixes * tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: (66 commits) mlx5: Return -EFAULT instead of -EPERM IB/qib: Log all SDMA errors unconditionally IB/qib: Fix module-level leak mlx5_core: Adjust hca_cap.uar_page_sz to conform to Connect-IB spec IB/srp: Let srp_abort() return FAST_IO_FAIL if TL offline IB/uverbs: Use get_unused_fd_flags(O_CLOEXEC) instead of get_unused_fd() mlx5_core: Fixes for sparse warnings IB/mlx5: Make profile[] static in main.c mlx5: Fix parameter type of health_handler_t mlx5: Add driver for Mellanox Connect-IB adapters IB/core: Add reserved values to enums for low-level driver use IB/srp: Bump driver version and release date IB/srp: Make HCA completion vector configurable IB/srp: Maintain a single connection per I_T nexus IB/srp: Fail I/O fast if target offline IB/srp: Skip host settle delay IB/srp: Avoid skipping srp_reset_host() after a transport error IB/srp: Fix remove_one crash due to resource exhaustion IB/qib: New transmitter tunning settings for Dell 1.1 backplane IB/core: Fix error return code in add_port() ...
-rw-r--r--Documentation/ABI/stable/sysfs-driver-ib_srp7
-rw-r--r--MAINTAINERS22
-rw-r--r--drivers/infiniband/Kconfig1
-rw-r--r--drivers/infiniband/Makefile1
-rw-r--r--drivers/infiniband/core/addr.c20
-rw-r--r--drivers/infiniband/core/cma.c906
-rw-r--r--drivers/infiniband/core/sa_query.c6
-rw-r--r--drivers/infiniband/core/sysfs.c8
-rw-r--r--drivers/infiniband/core/ucma.c321
-rw-r--r--drivers/infiniband/core/uverbs_cmd.c4
-rw-r--r--drivers/infiniband/hw/cxgb3/iwch_qp.c3
-rw-r--r--drivers/infiniband/hw/ehca/ehca_main.c1
-rw-r--r--drivers/infiniband/hw/mlx5/Kconfig10
-rw-r--r--drivers/infiniband/hw/mlx5/Makefile3
-rw-r--r--drivers/infiniband/hw/mlx5/ah.c92
-rw-r--r--drivers/infiniband/hw/mlx5/cq.c843
-rw-r--r--drivers/infiniband/hw/mlx5/doorbell.c100
-rw-r--r--drivers/infiniband/hw/mlx5/mad.c139
-rw-r--r--drivers/infiniband/hw/mlx5/main.c1504
-rw-r--r--drivers/infiniband/hw/mlx5/mem.c162
-rw-r--r--drivers/infiniband/hw/mlx5/mlx5_ib.h545
-rw-r--r--drivers/infiniband/hw/mlx5/mr.c1007
-rw-r--r--drivers/infiniband/hw/mlx5/qp.c2524
-rw-r--r--drivers/infiniband/hw/mlx5/srq.c473
-rw-r--r--drivers/infiniband/hw/mlx5/user.h121
-rw-r--r--drivers/infiniband/hw/ocrdma/ocrdma.h63
-rw-r--r--drivers/infiniband/hw/ocrdma/ocrdma_hw.c86
-rw-r--r--drivers/infiniband/hw/ocrdma/ocrdma_main.c6
-rw-r--r--drivers/infiniband/hw/ocrdma/ocrdma_sli.h35
-rw-r--r--drivers/infiniband/hw/ocrdma/ocrdma_verbs.c135
-rw-r--r--drivers/infiniband/hw/qib/Kconfig8
-rw-r--r--drivers/infiniband/hw/qib/Makefile1
-rw-r--r--drivers/infiniband/hw/qib/qib.h63
-rw-r--r--drivers/infiniband/hw/qib/qib_common.h2
-rw-r--r--drivers/infiniband/hw/qib/qib_cq.c67
-rw-r--r--drivers/infiniband/hw/qib/qib_debugfs.c283
-rw-r--r--drivers/infiniband/hw/qib/qib_debugfs.h45
-rw-r--r--drivers/infiniband/hw/qib/qib_driver.c1
-rw-r--r--drivers/infiniband/hw/qib/qib_file_ops.c176
-rw-r--r--drivers/infiniband/hw/qib/qib_iba6120.c10
-rw-r--r--drivers/infiniband/hw/qib/qib_iba7220.c10
-rw-r--r--drivers/infiniband/hw/qib/qib_iba7322.c507
-rw-r--r--drivers/infiniband/hw/qib/qib_init.c145
-rw-r--r--drivers/infiniband/hw/qib/qib_qp.c123
-rw-r--r--drivers/infiniband/hw/qib/qib_sdma.c56
-rw-r--r--drivers/infiniband/hw/qib/qib_verbs.c8
-rw-r--r--drivers/infiniband/hw/qib/qib_verbs.h33
-rw-r--r--drivers/infiniband/ulp/srp/ib_srp.c89
-rw-r--r--drivers/infiniband/ulp/srp/ib_srp.h1
-rw-r--r--drivers/net/ethernet/mellanox/Kconfig1
-rw-r--r--drivers/net/ethernet/mellanox/Makefile1
-rw-r--r--drivers/net/ethernet/mellanox/mlx5/core/Kconfig18
-rw-r--r--drivers/net/ethernet/mellanox/mlx5/core/Makefile5
-rw-r--r--drivers/net/ethernet/mellanox/mlx5/core/alloc.c238
-rw-r--r--drivers/net/ethernet/mellanox/mlx5/core/cmd.c1515
-rw-r--r--drivers/net/ethernet/mellanox/mlx5/core/cq.c224
-rw-r--r--drivers/net/ethernet/mellanox/mlx5/core/debugfs.c583
-rw-r--r--drivers/net/ethernet/mellanox/mlx5/core/eq.c521
-rw-r--r--drivers/net/ethernet/mellanox/mlx5/core/fw.c185
-rw-r--r--drivers/net/ethernet/mellanox/mlx5/core/health.c227
-rw-r--r--drivers/net/ethernet/mellanox/mlx5/core/mad.c78
-rw-r--r--drivers/net/ethernet/mellanox/mlx5/core/main.c475
-rw-r--r--drivers/net/ethernet/mellanox/mlx5/core/mcg.c106
-rw-r--r--drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h73
-rw-r--r--drivers/net/ethernet/mellanox/mlx5/core/mr.c136
-rw-r--r--drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c435
-rw-r--r--drivers/net/ethernet/mellanox/mlx5/core/pd.c101
-rw-r--r--drivers/net/ethernet/mellanox/mlx5/core/port.c104
-rw-r--r--drivers/net/ethernet/mellanox/mlx5/core/qp.c301
-rw-r--r--drivers/net/ethernet/mellanox/mlx5/core/srq.c223
-rw-r--r--drivers/net/ethernet/mellanox/mlx5/core/uar.c223
-rw-r--r--include/linux/mlx5/cmd.h51
-rw-r--r--include/linux/mlx5/cq.h165
-rw-r--r--include/linux/mlx5/device.h893
-rw-r--r--include/linux/mlx5/doorbell.h79
-rw-r--r--include/linux/mlx5/driver.h769
-rw-r--r--include/linux/mlx5/qp.h467
-rw-r--r--include/linux/mlx5/srq.h41
-rw-r--r--include/linux/socket.h2
-rw-r--r--include/rdma/ib.h89
-rw-r--r--include/rdma/ib_addr.h6
-rw-r--r--include/rdma/ib_sa.h7
-rw-r--r--include/rdma/ib_verbs.h35
-rw-r--r--include/rdma/rdma_cm.h13
-rw-r--r--include/uapi/rdma/rdma_user_cm.h73
85 files changed, 18436 insertions, 803 deletions
diff --git a/Documentation/ABI/stable/sysfs-driver-ib_srp b/Documentation/ABI/stable/sysfs-driver-ib_srp
index 481aae95c7d..5c53d28f775 100644
--- a/Documentation/ABI/stable/sysfs-driver-ib_srp
+++ b/Documentation/ABI/stable/sysfs-driver-ib_srp
@@ -54,6 +54,13 @@ Description: Interface for making ib_srp connect to a new target.
ib_srp. Specifying a value that exceeds cmd_sg_entries is
only safe with partial memory descriptor list support enabled
(allow_ext_sg=1).
+ * comp_vector, a number in the range 0..n-1 specifying the
+ MSI-X completion vector. Some HCA's allocate multiple (n)
+ MSI-X vectors per HCA port. If the IRQ affinity masks of
+ these interrupts have been configured such that each MSI-X
+ interrupt is handled by a different CPU then the comp_vector
+ parameter can be used to spread the SRP completion workload
+ over multiple CPU's.
What: /sys/class/infiniband_srp/srp-<hca>-<port_number>/ibdev
Date: January 2, 2006
diff --git a/MAINTAINERS b/MAINTAINERS
index b41a9fce321..705681e5a6b 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5430,6 +5430,28 @@ W: http://linuxtv.org
S: Odd Fixes
F: drivers/media/radio/radio-miropcm20*
+Mellanox MLX5 core VPI driver
+M: Eli Cohen <eli@mellanox.com>
+L: netdev@vger.kernel.org
+L: linux-rdma@vger.kernel.org
+W: http://www.mellanox.com
+Q: http://patchwork.ozlabs.org/project/netdev/list/
+Q: http://patchwork.kernel.org/project/linux-rdma/list/
+T: git://openfabrics.org/~eli/connect-ib.git
+S: Supported
+F: drivers/net/ethernet/mellanox/mlx5/core/
+F: include/linux/mlx5/
+
+Mellanox MLX5 IB driver
+M: Eli Cohen <eli@mellanox.com>
+L: linux-rdma@vger.kernel.org
+W: http://www.mellanox.com
+Q: http://patchwork.kernel.org/project/linux-rdma/list/
+T: git://openfabrics.org/~eli/connect-ib.git
+S: Supported
+F: include/linux/mlx5/
+F: drivers/infiniband/hw/mlx5/
+
MODULE SUPPORT
M: Rusty Russell <rusty@rustcorp.com.au>
S: Maintained
diff --git a/drivers/infiniband/Kconfig b/drivers/infiniband/Kconfig
index c85b56c2809..5ceda710f51 100644
--- a/drivers/infiniband/Kconfig
+++ b/drivers/infiniband/Kconfig
@@ -50,6 +50,7 @@ source "drivers/infiniband/hw/amso1100/Kconfig"
source "drivers/infiniband/hw/cxgb3/Kconfig"
source "drivers/infiniband/hw/cxgb4/Kconfig"
source "drivers/infiniband/hw/mlx4/Kconfig"
+source "drivers/infiniband/hw/mlx5/Kconfig"
source "drivers/infiniband/hw/nes/Kconfig"
source "drivers/infiniband/hw/ocrdma/Kconfig"
diff --git a/drivers/infiniband/Makefile b/drivers/infiniband/Makefile
index b126fefe0b1..1fe69888515 100644
--- a/drivers/infiniband/Makefile
+++ b/drivers/infiniband/Makefile
@@ -7,6 +7,7 @@ obj-$(CONFIG_INFINIBAND_AMSO1100) += hw/amso1100/
obj-$(CONFIG_INFINIBAND_CXGB3) += hw/cxgb3/
obj-$(CONFIG_INFINIBAND_CXGB4) += hw/cxgb4/
obj-$(CONFIG_MLX4_INFINIBAND) += hw/mlx4/
+obj-$(CONFIG_MLX5_INFINIBAND) += hw/mlx5/
obj-$(CONFIG_INFINIBAND_NES) += hw/nes/
obj-$(CONFIG_INFINIBAND_OCRDMA) += hw/ocrdma/
obj-$(CONFIG_INFINIBAND_IPOIB) += ulp/ipoib/
diff --git a/drivers/infiniband/core/addr.c b/drivers/infiniband/core/addr.c
index eaec8d7a3b7..e90f2b2eabd 100644
--- a/drivers/infiniband/core/addr.c
+++ b/drivers/infiniband/core/addr.c
@@ -45,6 +45,7 @@
#include <net/addrconf.h>
#include <net/ip6_route.h>
#include <rdma/ib_addr.h>
+#include <rdma/ib.h>
MODULE_AUTHOR("Sean Hefty");
MODULE_DESCRIPTION("IB Address Translation");
@@ -70,6 +71,21 @@ static LIST_HEAD(req_list);
static DECLARE_DELAYED_WORK(work, process_req);
static struct workqueue_struct *addr_wq;
+int rdma_addr_size(struct sockaddr *addr)
+{
+ switch (addr->sa_family) {
+ case AF_INET:
+ return sizeof(struct sockaddr_in);
+ case AF_INET6:
+ return sizeof(struct sockaddr_in6);
+ case AF_IB:
+ return sizeof(struct sockaddr_ib);
+ default:
+ return 0;
+ }
+}
+EXPORT_SYMBOL(rdma_addr_size);
+
void rdma_addr_register_client(struct rdma_addr_client *client)
{
atomic_set(&client->refcount, 1);
@@ -369,12 +385,12 @@ int rdma_resolve_ip(struct rdma_addr_client *client,
goto err;
}
- memcpy(src_in, src_addr, ip_addr_size(src_addr));
+ memcpy(src_in, src_addr, rdma_addr_size(src_addr));
} else {
src_in->sa_family = dst_addr->sa_family;
}
- memcpy(dst_in, dst_addr, ip_addr_size(dst_addr));
+ memcpy(dst_in, dst_addr, rdma_addr_size(dst_addr));
req->addr = addr;
req->callback = callback;
req->context = context;
diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index 34fbc2f60a0..f1c279fabe6 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -50,6 +50,7 @@
#include <rdma/rdma_cm.h>
#include <rdma/rdma_cm_ib.h>
#include <rdma/rdma_netlink.h>
+#include <rdma/ib.h>
#include <rdma/ib_cache.h>
#include <rdma/ib_cm.h>
#include <rdma/ib_sa.h>
@@ -79,7 +80,6 @@ static LIST_HEAD(dev_list);
static LIST_HEAD(listen_any_list);
static DEFINE_MUTEX(lock);
static struct workqueue_struct *cma_wq;
-static DEFINE_IDR(sdp_ps);
static DEFINE_IDR(tcp_ps);
static DEFINE_IDR(udp_ps);
static DEFINE_IDR(ipoib_ps);
@@ -195,24 +195,7 @@ struct cma_hdr {
union cma_ip_addr dst_addr;
};
-struct sdp_hh {
- u8 bsdh[16];
- u8 sdp_version; /* Major version: 7:4 */
- u8 ip_version; /* IP version: 7:4 */
- u8 sdp_specific1[10];
- __be16 port;
- __be16 sdp_specific2;
- union cma_ip_addr src_addr;
- union cma_ip_addr dst_addr;
-};
-
-struct sdp_hah {
- u8 bsdh[16];
- u8 sdp_version;
-};
-
#define CMA_VERSION 0x00
-#define SDP_MAJ_VERSION 0x2
static int cma_comp(struct rdma_id_private *id_priv, enum rdma_cm_state comp)
{
@@ -261,21 +244,6 @@ static inline void cma_set_ip_ver(struct cma_hdr *hdr, u8 ip_ver)
hdr->ip_version = (ip_ver << 4) | (hdr->ip_version & 0xF);
}
-static inline u8 sdp_get_majv(u8 sdp_version)
-{
- return sdp_version >> 4;
-}
-
-static inline u8 sdp_get_ip_ver(struct sdp_hh *hh)
-{
- return hh->ip_version >> 4;
-}
-
-static inline void sdp_set_ip_ver(struct sdp_hh *hh, u8 ip_ver)
-{
- hh->ip_version = (ip_ver << 4) | (hh->ip_version & 0xF);
-}
-
static void cma_attach_to_dev(struct rdma_id_private *id_priv,
struct cma_device *cma_dev)
{
@@ -310,16 +278,40 @@ static void cma_release_dev(struct rdma_id_private *id_priv)
mutex_unlock(&lock);
}
-static int cma_set_qkey(struct rdma_id_private *id_priv)
+static inline struct sockaddr *cma_src_addr(struct rdma_id_private *id_priv)
+{
+ return (struct sockaddr *) &id_priv->id.route.addr.src_addr;
+}
+
+static inline struct sockaddr *cma_dst_addr(struct rdma_id_private *id_priv)
+{
+ return (struct sockaddr *) &id_priv->id.route.addr.dst_addr;
+}
+
+static inline unsigned short cma_family(struct rdma_id_private *id_priv)
+{
+ return id_priv->id.route.addr.src_addr.ss_family;
+}
+
+static int cma_set_qkey(struct rdma_id_private *id_priv, u32 qkey)
{
struct ib_sa_mcmember_rec rec;
int ret = 0;
- if (id_priv->qkey)
+ if (id_priv->qkey) {
+ if (qkey && id_priv->qkey != qkey)
+ return -EINVAL;
+ return 0;
+ }
+
+ if (qkey) {
+ id_priv->qkey = qkey;
return 0;
+ }
switch (id_priv->id.ps) {
case RDMA_PS_UDP:
+ case RDMA_PS_IB:
id_priv->qkey = RDMA_UDP_QKEY;
break;
case RDMA_PS_IPOIB:
@@ -358,6 +350,27 @@ static int find_gid_port(struct ib_device *device, union ib_gid *gid, u8 port_nu
return -EADDRNOTAVAIL;
}
+static void cma_translate_ib(struct sockaddr_ib *sib, struct rdma_dev_addr *dev_addr)
+{
+ dev_addr->dev_type = ARPHRD_INFINIBAND;
+ rdma_addr_set_sgid(dev_addr, (union ib_gid *) &sib->sib_addr);
+ ib_addr_set_pkey(dev_addr, ntohs(sib->sib_pkey));
+}
+
+static int cma_translate_addr(struct sockaddr *addr, struct rdma_dev_addr *dev_addr)
+{
+ int ret;
+
+ if (addr->sa_family != AF_IB) {
+ ret = rdma_translate_ip(addr, dev_addr);
+ } else {
+ cma_translate_ib((struct sockaddr_ib *) addr, dev_addr);
+ ret = 0;
+ }
+
+ return ret;
+}
+
static int cma_acquire_dev(struct rdma_id_private *id_priv)
{
struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr;
@@ -401,6 +414,61 @@ out:
return ret;
}
+/*
+ * Select the source IB device and address to reach the destination IB address.
+ */
+static int cma_resolve_ib_dev(struct rdma_id_private *id_priv)
+{
+ struct cma_device *cma_dev, *cur_dev;
+ struct sockaddr_ib *addr;
+ union ib_gid gid, sgid, *dgid;
+ u16 pkey, index;
+ u8 port, p;
+ int i;
+
+ cma_dev = NULL;
+ addr = (struct sockaddr_ib *) cma_dst_addr(id_priv);
+ dgid = (union ib_gid *) &addr->sib_addr;
+ pkey = ntohs(addr->sib_pkey);
+
+ list_for_each_entry(cur_dev, &dev_list, list) {
+ if (rdma_node_get_transport(cur_dev->device->node_type) != RDMA_TRANSPORT_IB)
+ continue;
+
+ for (p = 1; p <= cur_dev->device->phys_port_cnt; ++p) {
+ if (ib_find_cached_pkey(cur_dev->device, p, pkey, &index))
+ continue;
+
+ for (i = 0; !ib_get_cached_gid(cur_dev->device, p, i, &gid); i++) {
+ if (!memcmp(&gid, dgid, sizeof(gid))) {
+ cma_dev = cur_dev;
+ sgid = gid;
+ port = p;
+ goto found;
+ }
+
+ if (!cma_dev && (gid.global.subnet_prefix ==
+ dgid->global.subnet_prefix)) {
+ cma_dev = cur_dev;
+ sgid = gid;
+ port = p;
+ }
+ }
+ }
+ }
+
+ if (!cma_dev)
+ return -ENODEV;
+
+found:
+ cma_attach_to_dev(id_priv, cma_dev);
+ id_priv->id.port_num = port;
+ addr = (struct sockaddr_ib *) cma_src_addr(id_priv);
+ memcpy(&addr->sib_addr, &sgid, sizeof sgid);
+ cma_translate_ib(addr, &id_priv->id.route.addr.dev_addr);
+ return 0;
+}
+
static void cma_deref_id(struct rdma_id_private *id_priv)
{
if (atomic_dec_and_test(&id_priv->refcount))
@@ -630,7 +698,7 @@ static int cma_ib_init_qp_attr(struct rdma_id_private *id_priv,
*qp_attr_mask = IB_QP_STATE | IB_QP_PKEY_INDEX | IB_QP_PORT;
if (id_priv->id.qp_type == IB_QPT_UD) {
- ret = cma_set_qkey(id_priv);
+ ret = cma_set_qkey(id_priv, 0);
if (ret)
return ret;
@@ -679,26 +747,30 @@ EXPORT_SYMBOL(rdma_init_qp_attr);
static inline int cma_zero_addr(struct sockaddr *addr)
{
- struct in6_addr *ip6;
-
- if (addr->sa_family == AF_INET)
- return ipv4_is_zeronet(
- ((struct sockaddr_in *)addr)->sin_addr.s_addr);
- else {
- ip6 = &((struct sockaddr_in6 *) addr)->sin6_addr;
- return (ip6->s6_addr32[0] | ip6->s6_addr32[1] |
- ip6->s6_addr32[2] | ip6->s6_addr32[3]) == 0;
+ switch (addr->sa_family) {
+ case AF_INET:
+ return ipv4_is_zeronet(((struct sockaddr_in *)addr)->sin_addr.s_addr);
+ case AF_INET6:
+ return ipv6_addr_any(&((struct sockaddr_in6 *) addr)->sin6_addr);
+ case AF_IB:
+ return ib_addr_any(&((struct sockaddr_ib *) addr)->sib_addr);
+ default:
+ return 0;
}
}
static inline int cma_loopback_addr(struct sockaddr *addr)
{
- if (addr->sa_family == AF_INET)
- return ipv4_is_loopback(
- ((struct sockaddr_in *) addr)->sin_addr.s_addr);
- else
- return ipv6_addr_loopback(
- &((struct sockaddr_in6 *) addr)->sin6_addr);
+ switch (addr->sa_family) {
+ case AF_INET:
+ return ipv4_is_loopback(((struct sockaddr_in *) addr)->sin_addr.s_addr);
+ case AF_INET6:
+ return ipv6_addr_loopback(&((struct sockaddr_in6 *) addr)->sin6_addr);
+ case AF_IB:
+ return ib_addr_loopback(&((struct sockaddr_ib *) addr)->sib_addr);
+ default:
+ return 0;
+ }
}
static inline int cma_any_addr(struct sockaddr *addr)
@@ -715,18 +787,31 @@ static int cma_addr_cmp(struct sockaddr *src, struct sockaddr *dst)
case AF_INET:
return ((struct sockaddr_in *) src)->sin_addr.s_addr !=
((struct sockaddr_in *) dst)->sin_addr.s_addr;
- default:
+ case AF_INET6:
return ipv6_addr_cmp(&((struct sockaddr_in6 *) src)->sin6_addr,
&((struct sockaddr_in6 *) dst)->sin6_addr);
+ default:
+ return ib_addr_cmp(&((struct sockaddr_ib *) src)->sib_addr,
+ &((struct sockaddr_ib *) dst)->sib_addr);
}
}
-static inline __be16 cma_port(struct sockaddr *addr)
+static __be16 cma_port(struct sockaddr *addr)
{
- if (addr->sa_family == AF_INET)
+ struct sockaddr_ib *sib;
+
+ switch (addr->sa_family) {
+ case AF_INET:
return ((struct sockaddr_in *) addr)->sin_port;
- else
+ case AF_INET6:
return ((struct sockaddr_in6 *) addr)->sin6_port;
+ case AF_IB:
+ sib = (struct sockaddr_ib *) addr;
+ return htons((u16) (be64_to_cpu(sib->sib_sid) &
+ be64_to_cpu(sib->sib_sid_mask)));
+ default:
+ return 0;
+ }
}
static inline int cma_any_port(struct sockaddr *addr)
@@ -734,83 +819,92 @@ static inline int cma_any_port(struct sockaddr *addr)
return !cma_port(addr);
}
-static int cma_get_net_info(void *hdr, enum rdma_port_space ps,
- u8 *ip_ver, __be16 *port,
- union cma_ip_addr **src, union cma_ip_addr **dst)
+static void cma_save_ib_info(struct rdma_cm_id *id, struct rdma_cm_id *listen_id,
+ struct ib_sa_path_rec *path)
{
- switch (ps) {
- case RDMA_PS_SDP:
- if (sdp_get_majv(((struct sdp_hh *) hdr)->sdp_version) !=
- SDP_MAJ_VERSION)
- return -EINVAL;
+ struct sockaddr_ib *listen_ib, *ib;
- *ip_ver = sdp_get_ip_ver(hdr);
- *port = ((struct sdp_hh *) hdr)->port;
- *src = &((struct sdp_hh *) hdr)->src_addr;
- *dst = &((struct sdp_hh *) hdr)->dst_addr;
- break;
- default:
- if (((struct cma_hdr *) hdr)->cma_version != CMA_VERSION)
- return -EINVAL;
+ listen_ib = (struct sockaddr_ib *) &listen_id->route.addr.src_addr;
+ ib = (struct sockaddr_ib *) &id->route.addr.src_addr;
+ ib->sib_family = listen_ib->sib_family;
+ ib->sib_pkey = path->pkey;
+ ib->sib_flowinfo = path->flow_label;
+ memcpy(&ib->sib_addr, &path->sgid, 16);
+ ib->sib_sid = listen_ib->sib_sid;
+ ib->sib_sid_mask = cpu_to_be64(0xffffffffffffffffULL);
+ ib->sib_scope_id = listen_ib->sib_scope_id;
- *ip_ver = cma_get_ip_ver(hdr);
- *port = ((struct cma_hdr *) hdr)->port;
- *src = &((struct cma_hdr *) hdr)->src_addr;
- *dst = &((struct cma_hdr *) hdr)->dst_addr;
- break;
- }
-
- if (*ip_ver != 4 && *ip_ver != 6)
- return -EINVAL;
- return 0;
+ ib = (struct sockaddr_ib *) &id->route.addr.dst_addr;
+ ib->sib_family = listen_ib->sib_family;
+ ib->sib_pkey = path->pkey;
+ ib->sib_flowinfo = path->flow_label;
+ memcpy(&ib->sib_addr, &path->dgid, 16);
}
-static void cma_save_net_info(struct rdma_addr *addr,
- struct rdma_addr *listen_addr,
- u8 ip_ver, __be16 port,
- union cma_ip_addr *src, union cma_ip_addr *dst)
+static void cma_save_ip4_info(struct rdma_cm_id *id, struct rdma_cm_id *listen_id,
+ struct cma_hdr *hdr)
{
struct sockaddr_in *listen4, *ip4;
+
+ listen4 = (struct sockaddr_in *) &listen_id->route.addr.src_addr;
+ ip4 = (struct sockaddr_in *) &id->route.addr.src_addr;
+ ip4->sin_family = listen4->sin_family;
+ ip4->sin_addr.s_addr = hdr->dst_addr.ip4.addr;
+ ip4->sin_port = listen4->sin_port;
+
+ ip4 = (struct sockaddr_in *) &id->route.addr.dst_addr;
+ ip4->sin_family = listen4->sin_family;
+ ip4->sin_addr.s_addr = hdr->src_addr.ip4.addr;
+ ip4->sin_port = hdr->port;
+}
+
+static void cma_save_ip6_info(struct rdma_cm_id *id, struct rdma_cm_id *listen_id,
+ struct cma_hdr *hdr)
+{
struct sockaddr_in6 *listen6, *ip6;
- switch (ip_ver) {
+ listen6 = (struct sockaddr_in6 *) &listen_id->route.addr.src_addr;
+ ip6 = (struct sockaddr_in6 *) &id->route.addr.src_addr;
+ ip6->sin6_family = listen6->sin6_family;
+ ip6->sin6_addr = hdr->dst_addr.ip6;
+ ip6->sin6_port = listen6->sin6_port;
+
+ ip6 = (struct sockaddr_in6 *) &id->route.addr.dst_addr;
+ ip6->sin6_family = listen6->sin6_family;
+ ip6->sin6_addr = hdr->src_addr.ip6;
+ ip6->sin6_port = hdr->port;
+}
+
+static int cma_save_net_info(struct rdma_cm_id *id, struct rdma_cm_id *listen_id,
+ struct ib_cm_event *ib_event)
+{
+ struct cma_hdr *hdr;
+
+ if (listen_id->route.addr.src_addr.ss_family == AF_IB) {
+ cma_save_ib_info(id, listen_id, ib_event->param.req_rcvd.primary_path);
+ return 0;
+ }
+
+ hdr = ib_event->private_data;
+ if (hdr->cma_version != CMA_VERSION)
+ return -EINVAL;
+
+ switch (cma_get_ip_ver(hdr)) {
case 4:
- listen4 = (struct sockaddr_in *) &listen_addr->src_addr;
- ip4 = (struct sockaddr_in *) &addr->src_addr;
- ip4->sin_family = listen4->sin_family;
- ip4->sin_addr.s_addr = dst->ip4.addr;
- ip4->sin_port = listen4->sin_port;
-
- ip4 = (struct sockaddr_in *) &addr->dst_addr;
- ip4->sin_family = listen4->sin_family;
- ip4->sin_addr.s_addr = src->ip4.addr;
- ip4->sin_port = port;
+ cma_save_ip4_info(id, listen_id, hdr);
break;
case 6:
- listen6 = (struct sockaddr_in6 *) &listen_addr->src_addr;
- ip6 = (struct sockaddr_in6 *) &addr->src_addr;
- ip6->sin6_family = listen6->sin6_family;
- ip6->sin6_addr = dst->ip6;
- ip6->sin6_port = listen6->sin6_port;
-
- ip6 = (struct sockaddr_in6 *) &addr->dst_addr;
- ip6->sin6_family = listen6->sin6_family;
- ip6->sin6_addr = src->ip6;
- ip6->sin6_port = port;
+ cma_save_ip6_info(id, listen_id, hdr);
break;
default:
- break;
+ return -EINVAL;
}
+ return 0;
}
-static inline int cma_user_data_offset(enum rdma_port_space ps)
+static inline int cma_user_data_offset(struct rdma_id_private *id_priv)
{
- switch (ps) {
- case RDMA_PS_SDP:
- return 0;
- default:
- return sizeof(struct cma_hdr);
- }
+ return cma_family(id_priv) == AF_IB ? 0 : sizeof(struct cma_hdr);
}
static void cma_cancel_route(struct rdma_id_private *id_priv)
@@ -861,8 +955,7 @@ static void cma_cancel_operation(struct rdma_id_private *id_priv,
cma_cancel_route(id_priv);
break;
case RDMA_CM_LISTEN:
- if (cma_any_addr((struct sockaddr *) &id_priv->id.route.addr.src_addr)
- && !id_priv->cma_dev)
+ if (cma_any_addr(cma_src_addr(id_priv)) && !id_priv->cma_dev)
cma_cancel_listens(id_priv);
break;
default:
@@ -977,16 +1070,6 @@ reject:
return ret;
}
-static int cma_verify_rep(struct rdma_id_private *id_priv, void *data)
-{
- if (id_priv->id.ps == RDMA_PS_SDP &&
- sdp_get_majv(((struct sdp_hah *) data)->sdp_version) !=
- SDP_MAJ_VERSION)
- return -EINVAL;
-
- return 0;
-}
-
static void cma_set_rep_event_data(struct rdma_cm_event *event,
struct ib_cm_rep_event_param *rep_data,
void *private_data)
@@ -1021,15 +1104,13 @@ static int cma_ib_handler(struct ib_cm_id *cm_id, struct ib_cm_event *ib_event)
event.status = -ETIMEDOUT;
break;
case IB_CM_REP_RECEIVED:
- event.status = cma_verify_rep(id_priv, ib_event->private_data);
- if (event.status)
- event.event = RDMA_CM_EVENT_CONNECT_ERROR;
- else if (id_priv->id.qp && id_priv->id.ps != RDMA_PS_SDP) {
+ if (id_priv->id.qp) {
event.status = cma_rep_recv(id_priv);
event.event = event.status ? RDMA_CM_EVENT_CONNECT_ERROR :
RDMA_CM_EVENT_ESTABLISHED;
- } else
+ } else {
event.event = RDMA_CM_EVENT_CONNECT_RESPONSE;
+ }
cma_set_rep_event_data(&event, &ib_event->param.rep_rcvd,
ib_event->private_data);
break;
@@ -1085,22 +1166,16 @@ static struct rdma_id_private *cma_new_conn_id(struct rdma_cm_id *listen_id,
struct rdma_id_private *id_priv;
struct rdma_cm_id *id;
struct rdma_route *rt;
- union cma_ip_addr *src, *dst;
- __be16 port;
- u8 ip_ver;
int ret;
- if (cma_get_net_info(ib_event->private_data, listen_id->ps,
- &ip_ver, &port, &src, &dst))
- return NULL;
-
id = rdma_create_id(listen_id->event_handler, listen_id->context,
listen_id->ps, ib_event->param.req_rcvd.qp_type);
if (IS_ERR(id))
return NULL;
- cma_save_net_info(&id->route.addr, &listen_id->route.addr,
- ip_ver, port, src, dst);
+ id_priv = container_of(id, struct rdma_id_private, id);
+ if (cma_save_net_info(id, listen_id, ib_event))
+ goto err;
rt = &id->route;
rt->num_paths = ib_event->param.req_rcvd.alternate_path ? 2 : 1;
@@ -1113,19 +1188,17 @@ static struct rdma_id_private *cma_new_conn_id(struct rdma_cm_id *listen_id,
if (rt->num_paths == 2)
rt->path_rec[1] = *ib_event->param.req_rcvd.alternate_path;
- if (cma_any_addr((struct sockaddr *) &rt->addr.src_addr)) {
+ if (cma_any_addr(cma_src_addr(id_priv))) {
rt->addr.dev_addr.dev_type = ARPHRD_INFINIBAND;
rdma_addr_set_sgid(&rt->addr.dev_addr, &rt->path_rec[0].sgid);
ib_addr_set_pkey(&rt->addr.dev_addr, be16_to_cpu(rt->path_rec[0].pkey));
} else {
- ret = rdma_translate_ip((struct sockaddr *) &rt->addr.src_addr,
- &rt->addr.dev_addr);
+ ret = cma_translate_addr(cma_src_addr(id_priv), &rt->addr.dev_addr);
if (ret)
goto err;
}
rdma_addr_set_dgid(&rt->addr.dev_addr, &rt->path_rec[0].dgid);
- id_priv = container_of(id, struct rdma_id_private, id);
id_priv->state = RDMA_CM_CONNECT;
return id_priv;
@@ -1139,9 +1212,6 @@ static struct rdma_id_private *cma_new_udp_id(struct rdma_cm_id *listen_id,
{
struct rdma_id_private *id_priv;
struct rdma_cm_id *id;
- union cma_ip_addr *src, *dst;
- __be16 port;
- u8 ip_ver;
int ret;
id = rdma_create_id(listen_id->event_handler, listen_id->context,
@@ -1149,22 +1219,16 @@ static struct rdma_id_private *cma_new_udp_id(struct rdma_cm_id *listen_id,
if (IS_ERR(id))
return NULL;
-
- if (cma_get_net_info(ib_event->private_data, listen_id->ps,
- &ip_ver, &port, &src, &dst))
+ id_priv = container_of(id, struct rdma_id_private, id);
+ if (cma_save_net_info(id, listen_id, ib_event))
goto err;
- cma_save_net_info(&id->route.addr, &listen_id->route.addr,
- ip_ver, port, src, dst);
-
if (!cma_any_addr((struct sockaddr *) &id->route.addr.src_addr)) {
- ret = rdma_translate_ip((struct sockaddr *) &id->route.addr.src_addr,
- &id->route.addr.dev_addr);
+ ret = cma_translate_addr(cma_src_addr(id_priv), &id->route.addr.dev_addr);
if (ret)
goto err;
}
- id_priv = container_of(id, struct rdma_id_private, id);
id_priv->state = RDMA_CM_CONNECT;
return id_priv;
err:
@@ -1210,7 +1274,7 @@ static int cma_req_handler(struct ib_cm_id *cm_id, struct ib_cm_event *ib_event)
return -ECONNABORTED;
memset(&event, 0, sizeof event);
- offset = cma_user_data_offset(listen_id->id.ps);
+ offset = cma_user_data_offset(listen_id);
event.event = RDMA_CM_EVENT_CONNECT_REQUEST;
if (ib_event->event == IB_CM_SIDR_REQ_RECEIVED) {
conn_id = cma_new_udp_id(&listen_id->id, ib_event);
@@ -1272,58 +1336,44 @@ err1:
return ret;
}
-static __be64 cma_get_service_id(enum rdma_port_space ps, struct sockaddr *addr)
+__be64 rdma_get_service_id(struct rdma_cm_id *id, struct sockaddr *addr)
{
- return cpu_to_be64(((u64)ps << 16) + be16_to_cpu(cma_port(addr)));
+ if (addr->sa_family == AF_IB)
+ return ((struct sockaddr_ib *) addr)->sib_sid;
+
+ return cpu_to_be64(((u64)id->ps << 16) + be16_to_cpu(cma_port(addr)));
}
+EXPORT_SYMBOL(rdma_get_service_id);
static void cma_set_compare_data(enum rdma_port_space ps, struct sockaddr *addr,
struct ib_cm_compare_data *compare)
{
struct cma_hdr *cma_data, *cma_mask;
- struct sdp_hh *sdp_data, *sdp_mask;
__be32 ip4_addr;
struct in6_addr ip6_addr;
memset(compare, 0, sizeof *compare);
cma_data = (void *) compare->data;
cma_mask = (void *) compare->mask;
- sdp_data = (void *) compare->data;
- sdp_mask = (void *) compare->mask;
switch (addr->sa_family) {
case AF_INET:
ip4_addr = ((struct sockaddr_in *) addr)->sin_addr.s_addr;
- if (ps == RDMA_PS_SDP) {
- sdp_set_ip_ver(sdp_data, 4);
- sdp_set_ip_ver(sdp_mask, 0xF);
- sdp_data->dst_addr.ip4.addr = ip4_addr;
- sdp_mask->dst_addr.ip4.addr = htonl(~0);
- } else {
- cma_set_ip_ver(cma_data, 4);
- cma_set_ip_ver(cma_mask, 0xF);
- if (!cma_any_addr(addr)) {
- cma_data->dst_addr.ip4.addr = ip4_addr;
- cma_mask->dst_addr.ip4.addr = htonl(~0);
- }
+ cma_set_ip_ver(cma_data, 4);
+ cma_set_ip_ver(cma_mask, 0xF);
+ if (!cma_any_addr(addr)) {
+ cma_data->dst_addr.ip4.addr = ip4_addr;
+ cma_mask->dst_addr.ip4.addr = htonl(~0);
}
break;
case AF_INET6:
ip6_addr = ((struct sockaddr_in6 *) addr)->sin6_addr;
- if (ps == RDMA_PS_SDP) {
- sdp_set_ip_ver(sdp_data, 6);
- sdp_set_ip_ver(sdp_mask, 0xF);
- sdp_data->dst_addr.ip6 = ip6_addr;
- memset(&sdp_mask->dst_addr.ip6, 0xFF,
- sizeof sdp_mask->dst_addr.ip6);
- } else {
- cma_set_ip_ver(cma_data, 6);
- cma_set_ip_ver(cma_mask, 0xF);
- if (!cma_any_addr(addr)) {
- cma_data->dst_addr.ip6 = ip6_addr;
- memset(&cma_mask->dst_addr.ip6, 0xFF,
- sizeof cma_mask->dst_addr.ip6);
- }
+ cma_set_ip_ver(cma_data, 6);
+ cma_set_ip_ver(cma_mask, 0xF);
+ if (!cma_any_addr(addr)) {
+ cma_data->dst_addr.ip6 = ip6_addr;
+ memset(&cma_mask->dst_addr.ip6, 0xFF,
+ sizeof cma_mask->dst_addr.ip6);
}
break;
default:
@@ -1347,9 +1397,9 @@ static int cma_iw_handler(struct iw_cm_id *iw_id, struct iw_cm_event *iw_event)
event.event = RDMA_CM_EVENT_DISCONNECTED;
break;
case IW_CM_EVENT_CONNECT_REPLY:
- sin = (struct sockaddr_in *) &id_priv->id.route.addr.src_addr;
+ sin = (struct sockaddr_in *) cma_src_addr(id_priv);
*sin = iw_event->local_addr;
- sin = (struct sockaddr_in *) &id_priv->id.route.addr.dst_addr;
+ sin = (struct sockaddr_in *) cma_dst_addr(id_priv);
*sin = iw_event->remote_addr;
switch (iw_event->status) {
case 0:
@@ -1447,9 +1497,9 @@ static int iw_conn_req_handler(struct iw_cm_id *cm_id,
cm_id->context = conn_id;
cm_id->cm_handler = cma_iw_handler;
- sin = (struct sockaddr_in *) &new_cm_id->route.addr.src_addr;
+ sin = (struct sockaddr_in *) cma_src_addr(conn_id);
*sin = iw_event->local_addr;
- sin = (struct sockaddr_in *) &new_cm_id->route.addr.dst_addr;
+ sin = (struct sockaddr_in *) cma_dst_addr(conn_id);
*sin = iw_event->remote_addr;
ret = ib_query_device(conn_id->id.device, &attr);
@@ -1506,8 +1556,8 @@ static int cma_ib_listen(struct rdma_id_private *id_priv)
id_priv->cm_id.ib = id;
- addr = (struct sockaddr *) &id_priv->id.route.addr.src_addr;
- svc_id = cma_get_service_id(id_priv->id.ps, addr);
+ addr = cma_src_addr(id_priv);
+ svc_id = rdma_get_service_id(&id_priv->id, addr);
if (cma_any_addr(addr) && !id_priv->afonly)
ret = ib_cm_listen(id_priv->cm_id.ib, svc_id, 0, NULL);
else {
@@ -1537,7 +1587,7 @@ static int cma_iw_listen(struct rdma_id_private *id_priv, int backlog)
id_priv->cm_id.iw = id;
- sin = (struct sockaddr_in *) &id_priv->id.route.addr.src_addr;
+ sin = (struct sockaddr_in *) cma_src_addr(id_priv);
id_priv->cm_id.iw->local_addr = *sin;
ret = iw_cm_listen(id_priv->cm_id.iw, backlog);
@@ -1567,6 +1617,10 @@ static void cma_listen_on_dev(struct rdma_id_private *id_priv,
struct rdma_cm_id *id;
int ret;
+ if (cma_family(id_priv) == AF_IB &&
+ rdma_node_get_transport(cma_dev->device->node_type) != RDMA_TRANSPORT_IB)
+ return;
+
id = rdma_create_id(cma_listen_handler, id_priv, id_priv->id.ps,
id_priv->id.qp_type);
if (IS_ERR(id))
@@ -1575,8 +1629,8 @@ static void cma_listen_on_dev(struct rdma_id_private *id_priv,
dev_id_priv = container_of(id, struct rdma_id_private, id);
dev_id_priv->state = RDMA_CM_ADDR_BOUND;
- memcpy(&id->route.addr.src_addr, &id_priv->id.route.addr.src_addr,
- ip_addr_size((struct sockaddr *) &id_priv->id.route.addr.src_addr));
+ memcpy(cma_src_addr(dev_id_priv), cma_src_addr(id_priv),
+ rdma_addr_size(cma_src_addr(id_priv)));
cma_attach_to_dev(dev_id_priv, cma_dev);
list_add_tail(&dev_id_priv->listen_list, &id_priv->listen_list);
@@ -1634,31 +1688,39 @@ static void cma_query_handler(int status, struct ib_sa_path_rec *path_rec,
static int cma_query_ib_route(struct rdma_id_private *id_priv, int timeout_ms,
struct cma_work *work)
{
- struct rdma_addr *addr = &id_priv->id.route.addr;
+ struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr;
struct ib_sa_path_rec path_rec;
ib_sa_comp_mask comp_mask;
struct sockaddr_in6 *sin6;
+ struct sockaddr_ib *sib;
memset(&path_rec, 0, sizeof path_rec);
- rdma_addr_get_sgid(&addr->dev_addr, &path_rec.sgid);
- rdma_addr_get_dgid(&addr->dev_addr, &path_rec.dgid);
- path_rec.pkey = cpu_to_be16(ib_addr_get_pkey(&addr->dev_addr));
+ rdma_addr_get_sgid(dev_addr, &path_rec.sgid);
+ rdma_addr_get_dgid(dev_addr, &path_rec.dgid);
+ path_rec.pkey = cpu_to_be16(ib_addr_get_pkey(dev_addr));
path_rec.numb_path = 1;
path_rec.reversible = 1;
- path_rec.service_id = cma_get_service_id(id_priv->id.ps,
- (struct sockaddr *) &addr->dst_addr);
+ path_rec.service_id = rdma_get_service_id(&id_priv->id, cma_dst_addr(id_priv));
comp_mask = IB_SA_PATH_REC_DGID | IB_SA_PATH_REC_SGID |
IB_SA_PATH_REC_PKEY | IB_SA_PATH_REC_NUMB_PATH |
IB_SA_PATH_REC_REVERSIBLE | IB_SA_PATH_REC_SERVICE_ID;
- if (addr->src_addr.ss_family == AF_INET) {
+ switch (cma_family(id_priv)) {
+ case AF_INET:
path_rec.qos_class = cpu_to_be16((u16) id_priv->tos);
comp_mask |= IB_SA_PATH_REC_QOS_CLASS;
- } else {
- sin6 = (struct sockaddr_in6 *) &addr->src_addr;
+ break;
+ case AF_INET6:
+ sin6 = (struct sockaddr_in6 *) cma_src_addr(id_priv);
path_rec.traffic_class = (u8) (be32_to_cpu(sin6->sin6_flowinfo) >> 20);
comp_mask |= IB_SA_PATH_REC_TRAFFIC_CLASS;
+ break;
+ case AF_IB:
+ sib = (struct sockaddr_ib *) cma_src_addr(id_priv);
+ path_rec.traffic_class = (u8) (be32_to_cpu(sib->sib_flowinfo) >> 20);
+ comp_mask |= IB_SA_PATH_REC_TRAFFIC_CLASS;
+ break;
}
id_priv->query_id = ib_sa_path_rec_get(&sa_client, id_priv->id.device,
@@ -1800,14 +1862,9 @@ static int cma_resolve_iboe_route(struct rdma_id_private *id_priv)
struct rdma_addr *addr = &route->addr;
struct cma_work *work;
int ret;
- struct sockaddr_in *src_addr = (struct sockaddr_in *)&route->addr.src_addr;
- struct sockaddr_in *dst_addr = (struct sockaddr_in *)&route->addr.dst_addr;
struct net_device *ndev = NULL;
u16 vid;
- if (src_addr->sin_family != dst_addr->sin_family)
- return -EINVAL;
-
work = kzalloc(sizeof *work, GFP_KERNEL);
if (!work)
return -ENOMEM;
@@ -1913,28 +1970,57 @@ err:
}
EXPORT_SYMBOL(rdma_resolve_route);
+static void cma_set_loopback(struct sockaddr *addr)
+{
+ switch (addr->sa_family) {
+ case AF_INET:
+ ((struct sockaddr_in *) addr)->sin_addr.s_addr = htonl(INADDR_LOOPBACK);
+ break;
+ case AF_INET6:
+ ipv6_addr_set(&((struct sockaddr_in6 *) addr)->sin6_addr,
+ 0, 0, 0, htonl(1));
+ break;
+ default:
+ ib_addr_set(&((struct sockaddr_ib *) addr)->sib_addr,
+ 0, 0, 0, htonl(1));
+ break;
+ }
+}
+
static int cma_bind_loopback(struct rdma_id_private *id_priv)
{
- struct cma_device *cma_dev;
+ struct cma_device *cma_dev, *cur_dev;
struct ib_port_attr port_attr;
union ib_gid gid;
u16 pkey;
int ret;
u8 p;
+ cma_dev = NULL;
mutex_lock(&lock);
- if (list_empty(&dev_list)) {
+ list_for_each_entry(cur_dev, &dev_list, list) {
+ if (cma_family(id_priv) == AF_IB &&
+ rdma_node_get_transport(cur_dev->device->node_type) != RDMA_TRANSPORT_IB)
+ continue;
+
+ if (!cma_dev)
+ cma_dev = cur_dev;
+
+ for (p = 1; p <= cur_dev->device->phys_port_cnt; ++p) {
+ if (!ib_query_port(cur_dev->device, p, &port_attr) &&
+ port_attr.state == IB_PORT_ACTIVE) {
+ cma_dev = cur_dev;
+ goto port_found;
+ }
+ }
+ }
+
+ if (!cma_dev) {
ret = -ENODEV;
goto out;
}
- list_for_each_entry(cma_dev, &dev_list, list)
- for (p = 1; p <= cma_dev->device->phys_port_cnt; ++p)
- if (!ib_query_port(cma_dev->device, p, &port_attr) &&
- port_attr.state == IB_PORT_ACTIVE)
- goto port_found;
p = 1;
- cma_dev = list_entry(dev_list.next, struct cma_device, list);
port_found:
ret = ib_get_cached_gid(cma_dev->device, p, 0, &gid);
@@ -1953,6 +2039,7 @@ port_found:
ib_addr_set_pkey(&id_priv->id.route.addr.dev_addr, pkey);
id_priv->id.port_num = p;
cma_attach_to_dev(id_priv, cma_dev);
+ cma_set_loopback(cma_src_addr(id_priv));
out:
mutex_unlock(&lock);
return ret;
@@ -1980,8 +2067,7 @@ static void addr_handler(int status, struct sockaddr *src_addr,
event.event = RDMA_CM_EVENT_ADDR_ERROR;
event.status = status;
} else {
- memcpy(&id_priv->id.route.addr.src_addr, src_addr,
- ip_addr_size(src_addr));
+ memcpy(cma_src_addr(id_priv), src_addr, rdma_addr_size(src_addr));
event.event = RDMA_CM_EVENT_ADDR_RESOLVED;
}
@@ -2000,7 +2086,6 @@ out:
static int cma_resolve_loopback(struct rdma_id_private *id_priv)
{
struct cma_work *work;
- struct sockaddr *src, *dst;
union ib_gid gid;
int ret;
@@ -2017,18 +2102,36 @@ static int cma_resolve_loopback(struct rdma_id_private *id_priv)
rdma_addr_get_sgid(&id_priv->id.route.addr.dev_addr, &gid);
rdma_addr_set_dgid(&id_priv->id.route.addr.dev_addr, &gid);
- src = (struct sockaddr *) &id_priv->id.route.addr.src_addr;
- if (cma_zero_addr(src)) {
- dst = (struct sockaddr *) &id_priv->id.route.addr.dst_addr;
- if ((src->sa_family = dst->sa_family) == AF_INET) {
- ((struct sockaddr_in *)src)->sin_addr =
- ((struct sockaddr_in *)dst)->sin_addr;
- } else {
- ((struct sockaddr_in6 *)src)->sin6_addr =
- ((struct sockaddr_in6 *)dst)->sin6_addr;
- }
+ work->id = id_priv;
+ INIT_WORK(&work->work, cma_work_handler);
+ work->old_state = RDMA_CM_ADDR_QUERY;
+ work->new_state = RDMA_CM_ADDR_RESOLVED;
+ work->event.event = RDMA_CM_EVENT_ADDR_RESOLVED;
+ queue_work(cma_wq, &work->work);
+ return 0;
+err:
+ kfree(work);
+ return ret;
+}
+
+static int cma_resolve_ib_addr(struct rdma_id_private *id_priv)
+{
+ struct cma_work *work;
+ int ret;
+
+ work = kzalloc(sizeof *work, GFP_KERNEL);
+ if (!work)
+ return -ENOMEM;
+
+ if (!id_priv->cma_dev) {
+ ret = cma_resolve_ib_dev(id_priv);
+ if (ret)
+ goto err;
}
+ rdma_addr_set_dgid(&id_priv->id.route.addr.dev_addr, (union ib_gid *)
+ &(((struct sockaddr_ib *) &id_priv->id.route.addr.dst_addr)->sib_addr));
+
work->id = id_priv;
INIT_WORK(&work->work, cma_work_handler);
work->old_state = RDMA_CM_ADDR_QUERY;
@@ -2046,9 +2149,13 @@ static int cma_bind_addr(struct rdma_cm_id *id, struct sockaddr *src_addr,
{
if (!src_addr || !src_addr->sa_family) {
src_addr = (struct sockaddr *) &id->route.addr.src_addr;
- if ((src_addr->sa_family = dst_addr->sa_family) == AF_INET6) {
+ src_addr->sa_family = dst_addr->sa_family;
+ if (dst_addr->sa_family == AF_INET6) {
((struct sockaddr_in6 *) src_addr)->sin6_scope_id =
((struct sockaddr_in6 *) dst_addr)->sin6_scope_id;
+ } else if (dst_addr->sa_family == AF_IB) {
+ ((struct sockaddr_ib *) src_addr)->sib_pkey =
+ ((struct sockaddr_ib *) dst_addr)->sib_pkey;
}
}
return rdma_bind_addr(id, src_addr);
@@ -2067,17 +2174,25 @@ int rdma_resolve_addr(struct rdma_cm_id *id, struct sockaddr *src_addr,
return ret;
}
+ if (cma_family(id_priv) != dst_addr->sa_family)
+ return -EINVAL;
+
if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_BOUND, RDMA_CM_ADDR_QUERY))
return -EINVAL;
atomic_inc(&id_priv->refcount);
- memcpy(&id->route.addr.dst_addr, dst_addr, ip_addr_size(dst_addr));
- if (cma_any_addr(dst_addr))
+ memcpy(cma_dst_addr(id_priv), dst_addr, rdma_addr_size(dst_addr));
+ if (cma_any_addr(dst_addr)) {
ret = cma_resolve_loopback(id_priv);
- else
- ret = rdma_resolve_ip(&addr_client, (struct sockaddr *) &id->route.addr.src_addr,
- dst_addr, &id->route.addr.dev_addr,
- timeout_ms, addr_handler, id_priv);
+ } else {
+ if (dst_addr->sa_family == AF_IB) {
+ ret = cma_resolve_ib_addr(id_priv);
+ } else {
+ ret = rdma_resolve_ip(&addr_client, cma_src_addr(id_priv),
+ dst_addr, &id->route.addr.dev_addr,
+ timeout_ms, addr_handler, id_priv);
+ }
+ }
if (ret)
goto err;
@@ -2097,7 +2212,7 @@ int rdma_set_reuseaddr(struct rdma_cm_id *id, int reuse)
id_priv = container_of(id, struct rdma_id_private, id);
spin_lock_irqsave(&id_priv->lock, flags);
- if (id_priv->state == RDMA_CM_IDLE) {
+ if (reuse || id_priv->state == RDMA_CM_IDLE) {
id_priv->reuseaddr = reuse;
ret = 0;
} else {
@@ -2131,10 +2246,29 @@ EXPORT_SYMBOL(rdma_set_afonly);
static void cma_bind_port(struct rdma_bind_list *bind_list,
struct rdma_id_private *id_priv)
{
- struct sockaddr_in *sin;
+ struct sockaddr *addr;
+ struct sockaddr_ib *sib;
+ u64 sid, mask;
+ __be16 port;
- sin = (struct sockaddr_in *) &id_priv->id.route.addr.src_addr;
- sin->sin_port = htons(bind_list->port);
+ addr = cma_src_addr(id_priv);
+ port = htons(bind_list->port);
+
+ switch (addr->sa_family) {
+ case AF_INET:
+ ((struct sockaddr_in *) addr)->sin_port = port;
+ break;
+ case AF_INET6:
+ ((struct sockaddr_in6 *) addr)->sin6_port = port;
+ break;
+ case AF_IB:
+ sib = (struct sockaddr_ib *) addr;
+ sid = be64_to_cpu(sib->sib_sid);
+ mask = be64_to_cpu(sib->sib_sid_mask);
+ sib->sib_sid = cpu_to_be64((sid & mask) | (u64) ntohs(port));
+ sib->sib_sid_mask = cpu_to_be64(~0ULL);
+ break;
+ }
id_priv->bind_list = bind_list;
hlist_add_head(&id_priv->node, &bind_list->owners);
}
@@ -2205,7 +2339,7 @@ static int cma_check_port(struct rdma_bind_list *bind_list,
struct rdma_id_private *cur_id;
struct sockaddr *addr, *cur_addr;
- addr = (struct sockaddr *) &id_priv->id.route.addr.src_addr;
+ addr = cma_src_addr(id_priv);
hlist_for_each_entry(cur_id, &bind_list->owners, node) {
if (id_priv == cur_id)
continue;
@@ -2214,7 +2348,7 @@ static int cma_check_port(struct rdma_bind_list *bind_list,
cur_id->reuseaddr)
continue;
- cur_addr = (struct sockaddr *) &cur_id->id.route.addr.src_addr;
+ cur_addr = cma_src_addr(cur_id);
if (id_priv->afonly && cur_id->afonly &&
(addr->sa_family != cur_addr->sa_family))
continue;
@@ -2234,7 +2368,7 @@ static int cma_use_port(struct idr *ps, struct rdma_id_private *id_priv)
unsigned short snum;
int ret;
- snum = ntohs(cma_port((struct sockaddr *) &id_priv->id.route.addr.src_addr));
+ snum = ntohs(cma_port(cma_src_addr(id_priv)));
if (snum < PROT_SOCK && !capable(CAP_NET_BIND_SERVICE))
return -EACCES;
@@ -2261,33 +2395,67 @@ static int cma_bind_listen(struct rdma_id_private *id_priv)
return ret;
}
-static int cma_get_port(struct rdma_id_private *id_priv)
+static struct idr *cma_select_inet_ps(struct rdma_id_private *id_priv)
{
- struct idr *ps;
- int ret;
-
switch (id_priv->id.ps) {
- case RDMA_PS_SDP:
- ps = &sdp_ps;
- break;
case RDMA_PS_TCP:
- ps = &tcp_ps;
- break;
+ return &tcp_ps;
case RDMA_PS_UDP:
- ps = &udp_ps;
- break;
+ return &udp_ps;
case RDMA_PS_IPOIB:
- ps = &ipoib_ps;
- break;
+ return &ipoib_ps;
case RDMA_PS_IB:
- ps = &ib_ps;
- break;
+ return &ib_ps;
default:
- return -EPROTONOSUPPORT;
+ return NULL;
+ }
+}
+
+static struct idr *cma_select_ib_ps(struct rdma_id_private *id_priv)
+{
+ struct idr *ps = NULL;
+ struct sockaddr_ib *sib;
+ u64 sid_ps, mask, sid;
+
+ sib = (struct sockaddr_ib *) cma_src_addr(id_priv);
+ mask = be64_to_cpu(sib->sib_sid_mask) & RDMA_IB_IP_PS_MASK;
+ sid = be64_to_cpu(sib->sib_sid) & mask;
+
+ if ((id_priv->id.ps == RDMA_PS_IB) && (sid == (RDMA_IB_IP_PS_IB & mask))) {
+ sid_ps = RDMA_IB_IP_PS_IB;
+ ps = &ib_ps;
+ } else if (((id_priv->id.ps == RDMA_PS_IB) || (id_priv->id.ps == RDMA_PS_TCP)) &&
+ (sid == (RDMA_IB_IP_PS_TCP & mask))) {
+ sid_ps = RDMA_IB_IP_PS_TCP;
+ ps = &tcp_ps;
+ } else if (((id_priv->id.ps == RDMA_PS_IB) || (id_priv->id.ps == RDMA_PS_UDP)) &&
+ (sid == (RDMA_IB_IP_PS_UDP & mask))) {
+ sid_ps = RDMA_IB_IP_PS_UDP;
+ ps = &udp_ps;
}
+ if (ps) {
+ sib->sib_sid = cpu_to_be64(sid_ps | ntohs(cma_port((struct sockaddr *) sib)));
+ sib->sib_sid_mask = cpu_to_be64(RDMA_IB_IP_PS_MASK |
+ be64_to_cpu(sib->sib_sid_mask));
+ }
+ return ps;
+}
+
+static int cma_get_port(struct rdma_id_private *id_priv)
+{
+ struct idr *ps;
+ int ret;
+
+ if (cma_family(id_priv) != AF_IB)
+ ps = cma_select_inet_ps(id_priv);
+ else
+ ps = cma_select_ib_ps(id_priv);
+ if (!ps)
+ return -EPROTONOSUPPORT;
+
mutex_lock(&lock);
- if (cma_any_port((struct sockaddr *) &id_priv->id.route.addr.src_addr))
+ if (cma_any_port(cma_src_addr(id_priv)))
ret = cma_alloc_any_port(ps, id_priv);
else
ret = cma_use_port(ps, id_priv);
@@ -2322,8 +2490,8 @@ int rdma_listen(struct rdma_cm_id *id, int backlog)
id_priv = container_of(id, struct rdma_id_private, id);
if (id_priv->state == RDMA_CM_IDLE) {
- ((struct sockaddr *) &id->route.addr.src_addr)->sa_family = AF_INET;
- ret = rdma_bind_addr(id, (struct sockaddr *) &id->route.addr.src_addr);
+ id->route.addr.src_addr.ss_family = AF_INET;
+ ret = rdma_bind_addr(id, cma_src_addr(id_priv));
if (ret)
return ret;
}
@@ -2370,7 +2538,8 @@ int rdma_bind_addr(struct rdma_cm_id *id, struct sockaddr *addr)
struct rdma_id_private *id_priv;
int ret;
- if (addr->sa_family != AF_INET && addr->sa_family != AF_INET6)
+ if (addr->sa_family != AF_INET && addr->sa_family != AF_INET6 &&
+ addr->sa_family != AF_IB)
return -EAFNOSUPPORT;
id_priv = container_of(id, struct rdma_id_private, id);
@@ -2382,7 +2551,7 @@ int rdma_bind_addr(struct rdma_cm_id *id, struct sockaddr *addr)
goto err1;
if (!cma_any_addr(addr)) {
- ret = rdma_translate_ip(addr, &id->route.addr.dev_addr);
+ ret = cma_translate_addr(addr, &id->route.addr.dev_addr);
if (ret)
goto err1;
@@ -2391,7 +2560,7 @@ int rdma_bind_addr(struct rdma_cm_id *id, struct sockaddr *addr)
goto err1;
}
- memcpy(&id->route.addr.src_addr, addr, ip_addr_size(addr));
+ memcpy(cma_src_addr(id_priv), addr, rdma_addr_size(addr));
if (!(id_priv->options & (1 << CMA_OPTION_AFONLY))) {
if (addr->sa_family == AF_INET)
id_priv->afonly = 1;
@@ -2414,62 +2583,32 @@ err1:
}
EXPORT_SYMBOL(rdma_bind_addr);
-static int cma_format_hdr(void *hdr, enum rdma_port_space ps,
- struct rdma_route *route)
+static int cma_format_hdr(void *hdr, struct rdma_id_private *id_priv)
{
struct cma_hdr *cma_hdr;
- struct sdp_hh *sdp_hdr;
- if (route->addr.src_addr.ss_family == AF_INET) {
+ cma_hdr = hdr;
+ cma_hdr->cma_version = CMA_VERSION;
+ if (cma_family(id_priv) == AF_INET) {
struct sockaddr_in *src4, *dst4;
- src4 = (struct sockaddr_in *) &route->addr.src_addr;
- dst4 = (struct sockaddr_in *) &route->addr.dst_addr;
-
- switch (ps) {
- case RDMA_PS_SDP:
- sdp_hdr = hdr;
- if (sdp_get_majv(sdp_hdr->sdp_version) != SDP_MAJ_VERSION)
- return -EINVAL;
- sdp_set_ip_ver(sdp_hdr, 4);
- sdp_hdr->src_addr.ip4.addr = src4->sin_addr.s_addr;
- sdp_hdr->dst_addr.ip4.addr = dst4->sin_addr.s_addr;
- sdp_hdr->port = src4->sin_port;
- break;
- default:
- cma_hdr = hdr;
- cma_hdr->cma_version = CMA_VERSION;
- cma_set_ip_ver(cma_hdr, 4);
- cma_hdr->src_addr.ip4.addr = src4->sin_addr.s_addr;
- cma_hdr->dst_addr.ip4.addr = dst4->sin_addr.s_addr;
- cma_hdr->port = src4->sin_port;
- break;
- }
- } else {
+ src4 = (struct sockaddr_in *) cma_src_addr(id_priv);
+ dst4 = (struct sockaddr_in *) cma_dst_addr(id_priv);
+
+ cma_set_ip_ver(cma_hdr, 4);
+ cma_hdr->src_addr.ip4.addr = src4->sin_addr.s_addr;
+ cma_hdr->dst_addr.ip4.addr = dst4->sin_addr.s_addr;
+ cma_hdr->port = src4->sin_port;
+ } else if (cma_family(id_priv) == AF_INET6) {
struct sockaddr_in6 *src6, *dst6;
- src6 = (struct sockaddr_in6 *) &route->addr.src_addr;
- dst6 = (struct sockaddr_in6 *) &route->addr.dst_addr;
-
- switch (ps) {
- case RDMA_PS_SDP:
- sdp_hdr = hdr;
- if (sdp_get_majv(sdp_hdr->sdp_version) != SDP_MAJ_VERSION)
- return -EINVAL;
- sdp_set_ip_ver(sdp_hdr, 6);
- sdp_hdr->src_addr.ip6 = src6->sin6_addr;
- sdp_hdr->dst_addr.ip6 = dst6->sin6_addr;
- sdp_hdr->port = src6->sin6_port;
- break;
- default:
- cma_hdr = hdr;
- cma_hdr->cma_version = CMA_VERSION;
- cma_set_ip_ver(cma_hdr, 6);
- cma_hdr->src_addr.ip6 = src6->sin6_addr;
- cma_hdr->dst_addr.ip6 = dst6->sin6_addr;
- cma_hdr->port = src6->sin6_port;
- break;
- }
+ src6 = (struct sockaddr_in6 *) cma_src_addr(id_priv);
+ dst6 = (struct sockaddr_in6 *) cma_dst_addr(id_priv);
+
+ cma_set_ip_ver(cma_hdr, 6);
+ cma_hdr->src_addr.ip6 = src6->sin6_addr;
+ cma_hdr->dst_addr.ip6 = dst6->sin6_addr;
+ cma_hdr->port = src6->sin6_port;
}
return 0;
}
@@ -2499,15 +2638,10 @@ static int cma_sidr_rep_handler(struct ib_cm_id *cm_id,
event.status = ib_event->param.sidr_rep_rcvd.status;
break;
}
- ret = cma_set_qkey(id_priv);
+ ret = cma_set_qkey(id_priv, rep->qkey);
if (ret) {
event.event = RDMA_CM_EVENT_ADDR_ERROR;
- event.status = -EINVAL;
- break;
- }
- if (id_priv->qkey != rep->qkey) {
- event.event = RDMA_CM_EVENT_UNREACHABLE;
- event.status = -EINVAL;
+ event.status = ret;
break;
}
ib_init_ah_from_path(id_priv->id.device, id_priv->id.port_num,
@@ -2542,27 +2676,31 @@ static int cma_resolve_ib_udp(struct rdma_id_private *id_priv,
struct rdma_conn_param *conn_param)
{
struct ib_cm_sidr_req_param req;
- struct rdma_route *route;
struct ib_cm_id *id;
- int ret;
+ int offset, ret;
- req.private_data_len = sizeof(struct cma_hdr) +
- conn_param->private_data_len;
+ offset = cma_user_data_offset(id_priv);
+ req.private_data_len = offset + conn_param->private_data_len;
if (req.private_data_len < conn_param->private_data_len)
return -EINVAL;
- req.private_data = kzalloc(req.private_data_len, GFP_ATOMIC);
- if (!req.private_data)
- return -ENOMEM;
+ if (req.private_data_len) {
+ req.private_data = kzalloc(req.private_data_len, GFP_ATOMIC);
+ if (!req.private_data)
+ return -ENOMEM;
+ } else {
+ req.private_data = NULL;
+ }
if (conn_param->private_data && conn_param->private_data_len)
- memcpy((void *) req.private_data + sizeof(struct cma_hdr),
+ memcpy((void *) req.private_data + offset,
conn_param->private_data, conn_param->private_data_len);
- route = &id_priv->id.route;
- ret = cma_format_hdr((void *) req.private_data, id_priv->id.ps, route);
- if (ret)
- goto out;
+ if (req.private_data) {
+ ret = cma_format_hdr((void *) req.private_data, id_priv);
+ if (ret)
+ goto out;
+ }
id = ib_create_cm_id(id_priv->id.device, cma_sidr_rep_handler,
id_priv);
@@ -2572,9 +2710,8 @@ static int cma_resolve_ib_udp(struct rdma_id_private *id_priv,
}
id_priv->cm_id.ib = id;
- req.path = route->path_rec;
- req.service_id = cma_get_service_id(id_priv->id.ps,
- (struct sockaddr *) &route->addr.dst_addr);
+ req.path = id_priv->id.route.path_rec;
+ req.service_id = rdma_get_service_id(&id_priv->id, cma_dst_addr(id_priv));
req.timeout_ms = 1 << (CMA_CM_RESPONSE_TIMEOUT - 8);
req.max_cm_retries = CMA_MAX_CM_RETRIES;
@@ -2598,14 +2735,18 @@ static int cma_connect_ib(struct rdma_id_private *id_priv,
int offset, ret;
memset(&req, 0, sizeof req);
- offset = cma_user_data_offset(id_priv->id.ps);
+ offset = cma_user_data_offset(id_priv);
req.private_data_len = offset + conn_param->private_data_len;
if (req.private_data_len < conn_param->private_data_len)
return -EINVAL;
- private_data = kzalloc(req.private_data_len, GFP_ATOMIC);
- if (!private_data)
- return -ENOMEM;
+ if (req.private_data_len) {
+ private_data = kzalloc(req.private_data_len, GFP_ATOMIC);
+ if (!private_data)
+ return -ENOMEM;
+ } else {
+ private_data = NULL;
+ }
if (conn_param->private_data && conn_param->private_data_len)
memcpy(private_data + offset, conn_param->private_data,
@@ -2619,17 +2760,18 @@ static int cma_connect_ib(struct rdma_id_private *id_priv,
id_priv->cm_id.ib = id;
route = &id_priv->id.route;
- ret = cma_format_hdr(private_data, id_priv->id.ps, route);
- if (ret)
- goto out;
- req.private_data = private_data;
+ if (private_data) {
+ ret = cma_format_hdr(private_data, id_priv);
+ if (ret)
+ goto out;
+ req.private_data = private_data;
+ }
req.primary_path = &route->path_rec[0];
if (route->num_paths == 2)
req.alternate_path = &route->path_rec[1];
- req.service_id = cma_get_service_id(id_priv->id.ps,
- (struct sockaddr *) &route->addr.dst_addr);
+ req.service_id = rdma_get_service_id(&id_priv->id, cma_dst_addr(id_priv));
req.qp_num = id_priv->qp_num;
req.qp_type = id_priv->id.qp_type;
req.starting_psn = id_priv->seq_num;
@@ -2668,10 +2810,10 @@ static int cma_connect_iw(struct rdma_id_private *id_priv,
id_priv->cm_id.iw = cm_id;
- sin = (struct sockaddr_in*) &id_priv->id.route.addr.src_addr;
+ sin = (struct sockaddr_in *) cma_src_addr(id_priv);
cm_id->local_addr = *sin;
- sin = (struct sockaddr_in*) &id_priv->id.route.addr.dst_addr;
+ sin = (struct sockaddr_in *) cma_dst_addr(id_priv);
cm_id->remote_addr = *sin;
ret = cma_modify_qp_rtr(id_priv, conn_param);
@@ -2789,7 +2931,7 @@ static int cma_accept_iw(struct rdma_id_private *id_priv,
}
static int cma_send_sidr_rep(struct rdma_id_private *id_priv,
- enum ib_cm_sidr_status status,
+ enum ib_cm_sidr_status status, u32 qkey,
const void *private_data, int private_data_len)
{
struct ib_cm_sidr_rep_param rep;
@@ -2798,7 +2940,7 @@ static int cma_send_sidr_rep(struct rdma_id_private *id_priv,
memset(&rep, 0, sizeof rep);
rep.status = status;
if (status == IB_SIDR_SUCCESS) {
- ret = cma_set_qkey(id_priv);
+ ret = cma_set_qkey(id_priv, qkey);
if (ret)
return ret;
rep.qp_num = id_priv->qp_num;
@@ -2832,11 +2974,12 @@ int rdma_accept(struct rdma_cm_id *id, struct rdma_conn_param *conn_param)
if (id->qp_type == IB_QPT_UD) {
if (conn_param)
ret = cma_send_sidr_rep(id_priv, IB_SIDR_SUCCESS,
+ conn_param->qkey,
conn_param->private_data,
conn_param->private_data_len);
else
ret = cma_send_sidr_rep(id_priv, IB_SIDR_SUCCESS,
- NULL, 0);
+ 0, NULL, 0);
} else {
if (conn_param)
ret = cma_accept_ib(id_priv, conn_param);
@@ -2897,7 +3040,7 @@ int rdma_reject(struct rdma_cm_id *id, const void *private_data,
switch (rdma_node_get_transport(id->device->node_type)) {
case RDMA_TRANSPORT_IB:
if (id->qp_type == IB_QPT_UD)
- ret = cma_send_sidr_rep(id_priv, IB_SIDR_REJECT,
+ ret = cma_send_sidr_rep(id_priv, IB_SIDR_REJECT, 0,
private_data, private_data_len);
else
ret = ib_send_cm_rej(id_priv->cm_id.ib,
@@ -2958,6 +3101,8 @@ static int cma_ib_mc_handler(int status, struct ib_sa_multicast *multicast)
cma_disable_callback(id_priv, RDMA_CM_ADDR_RESOLVED))
return 0;
+ if (!status)
+ status = cma_set_qkey(id_priv, be32_to_cpu(multicast->rec.qkey));
mutex_lock(&id_priv->qp_mutex);
if (!status && id_priv->id.qp)
status = ib_attach_mcast(id_priv->id.qp, &multicast->rec.mgid,
@@ -3004,6 +3149,8 @@ static void cma_set_mgid(struct rdma_id_private *id_priv,
0xFF10A01B)) {
/* IPv6 address is an SA assigned MGID. */
memcpy(mgid, &sin6->sin6_addr, sizeof *mgid);
+ } else if (addr->sa_family == AF_IB) {
+ memcpy(mgid, &((struct sockaddr_ib *) addr)->sib_addr, sizeof *mgid);
} else if ((addr->sa_family == AF_INET6)) {
ipv6_ib_mc_map(&sin6->sin6_addr, dev_addr->broadcast, mc_map);
if (id_priv->id.ps == RDMA_PS_UDP)
@@ -3031,9 +3178,12 @@ static int cma_join_ib_multicast(struct rdma_id_private *id_priv,
if (ret)
return ret;
+ ret = cma_set_qkey(id_priv, 0);
+ if (ret)
+ return ret;
+
cma_set_mgid(id_priv, (struct sockaddr *) &mc->addr, &rec.mgid);
- if (id_priv->id.ps == RDMA_PS_UDP)
- rec.qkey = cpu_to_be32(RDMA_UDP_QKEY);
+ rec.qkey = cpu_to_be32(id_priv->qkey);
rdma_addr_get_sgid(dev_addr, &rec.port_gid);
rec.pkey = cpu_to_be16(ib_addr_get_pkey(dev_addr));
rec.join_state = 1;
@@ -3170,7 +3320,7 @@ int rdma_join_multicast(struct rdma_cm_id *id, struct sockaddr *addr,
if (!mc)
return -ENOMEM;
- memcpy(&mc->addr, addr, ip_addr_size(addr));
+ memcpy(&mc->addr, addr, rdma_addr_size(addr));
mc->context = context;
mc->id_priv = id_priv;
@@ -3215,7 +3365,7 @@ void rdma_leave_multicast(struct rdma_cm_id *id, struct sockaddr *addr)
id_priv = container_of(id, struct rdma_id_private, id);
spin_lock_irq(&id_priv->lock);
list_for_each_entry(mc, &id_priv->mc_list, list) {
- if (!memcmp(&mc->addr, addr, ip_addr_size(addr))) {
+ if (!memcmp(&mc->addr, addr, rdma_addr_size(addr))) {
list_del(&mc->list);
spin_unlock_irq(&id_priv->lock);
@@ -3436,33 +3586,16 @@ static int cma_get_id_stats(struct sk_buff *skb, struct netlink_callback *cb)
id_stats->bound_dev_if =
id->route.addr.dev_addr.bound_dev_if;
- if (id->route.addr.src_addr.ss_family == AF_INET) {
- if (ibnl_put_attr(skb, nlh,
- sizeof(struct sockaddr_in),
- &id->route.addr.src_addr,
- RDMA_NL_RDMA_CM_ATTR_SRC_ADDR)) {
- goto out;
- }
- if (ibnl_put_attr(skb, nlh,
- sizeof(struct sockaddr_in),
- &id->route.addr.dst_addr,
- RDMA_NL_RDMA_CM_ATTR_DST_ADDR)) {
- goto out;
- }
- } else if (id->route.addr.src_addr.ss_family == AF_INET6) {
- if (ibnl_put_attr(skb, nlh,
- sizeof(struct sockaddr_in6),
- &id->route.addr.src_addr,
- RDMA_NL_RDMA_CM_ATTR_SRC_ADDR)) {
- goto out;
- }
- if (ibnl_put_attr(skb, nlh,
- sizeof(struct sockaddr_in6),
- &id->route.addr.dst_addr,
- RDMA_NL_RDMA_CM_ATTR_DST_ADDR)) {
- goto out;
- }
- }
+ if (ibnl_put_attr(skb, nlh,
+ rdma_addr_size(cma_src_addr(id_priv)),
+ cma_src_addr(id_priv),
+ RDMA_NL_RDMA_CM_ATTR_SRC_ADDR))
+ goto out;
+ if (ibnl_put_attr(skb, nlh,
+ rdma_addr_size(cma_src_addr(id_priv)),
+ cma_dst_addr(id_priv),
+ RDMA_NL_RDMA_CM_ATTR_DST_ADDR))
+ goto out;
id_stats->pid = id_priv->owner;
id_stats->port_space = id->ps;
@@ -3527,7 +3660,6 @@ static void __exit cma_cleanup(void)
rdma_addr_unregister_client(&addr_client);
ib_sa_unregister_client(&sa_client);
destroy_workqueue(cma_wq);
- idr_destroy(&sdp_ps);
idr_destroy(&tcp_ps);
idr_destroy(&udp_ps);
idr_destroy(&ipoib_ps);
diff --git a/drivers/infiniband/core/sa_query.c b/drivers/infiniband/core/sa_query.c
index 934f45e79e5..9838ca48438 100644
--- a/drivers/infiniband/core/sa_query.c
+++ b/drivers/infiniband/core/sa_query.c
@@ -652,6 +652,12 @@ void ib_sa_unpack_path(void *attribute, struct ib_sa_path_rec *rec)
}
EXPORT_SYMBOL(ib_sa_unpack_path);
+void ib_sa_pack_path(struct ib_sa_path_rec *rec, void *attribute)
+{
+ ib_pack(path_rec_table, ARRAY_SIZE(path_rec_table), rec, attribute);
+}
+EXPORT_SYMBOL(ib_sa_pack_path);
+
static void ib_sa_path_rec_callback(struct ib_sa_query *sa_query,
int status,
struct ib_sa_mad *mad)
diff --git a/drivers/infiniband/core/sysfs.c b/drivers/infiniband/core/sysfs.c
index 99904f7d59e..cde1e7b5b85 100644
--- a/drivers/infiniband/core/sysfs.c
+++ b/drivers/infiniband/core/sysfs.c
@@ -545,8 +545,10 @@ static int add_port(struct ib_device *device, int port_num,
p->gid_group.name = "gids";
p->gid_group.attrs = alloc_group_attrs(show_port_gid, attr.gid_tbl_len);
- if (!p->gid_group.attrs)
+ if (!p->gid_group.attrs) {
+ ret = -ENOMEM;
goto err_remove_pma;
+ }
ret = sysfs_create_group(&p->kobj, &p->gid_group);
if (ret)
@@ -555,8 +557,10 @@ static int add_port(struct ib_device *device, int port_num,
p->pkey_group.name = "pkeys";
p->pkey_group.attrs = alloc_group_attrs(show_port_pkey,
attr.pkey_tbl_len);
- if (!p->pkey_group.attrs)
+ if (!p->pkey_group.attrs) {
+ ret = -ENOMEM;
goto err_remove_gid;
+ }
ret = sysfs_create_group(&p->kobj, &p->pkey_group);
if (ret)
diff --git a/drivers/infiniband/core/ucma.c b/drivers/infiniband/core/ucma.c
index 5ca44cd9b00..b0f189be543 100644
--- a/drivers/infiniband/core/ucma.c
+++ b/drivers/infiniband/core/ucma.c
@@ -47,6 +47,8 @@
#include <rdma/ib_marshall.h>
#include <rdma/rdma_cm.h>
#include <rdma/rdma_cm_ib.h>
+#include <rdma/ib_addr.h>
+#include <rdma/ib.h>
MODULE_AUTHOR("Sean Hefty");
MODULE_DESCRIPTION("RDMA Userspace Connection Manager Access");
@@ -510,10 +512,10 @@ static ssize_t ucma_destroy_id(struct ucma_file *file, const char __user *inbuf,
return ret;
}
-static ssize_t ucma_bind_addr(struct ucma_file *file, const char __user *inbuf,
+static ssize_t ucma_bind_ip(struct ucma_file *file, const char __user *inbuf,
int in_len, int out_len)
{
- struct rdma_ucm_bind_addr cmd;
+ struct rdma_ucm_bind_ip cmd;
struct ucma_context *ctx;
int ret;
@@ -529,24 +531,75 @@ static ssize_t ucma_bind_addr(struct ucma_file *file, const char __user *inbuf,
return ret;
}
+static ssize_t ucma_bind(struct ucma_file *file, const char __user *inbuf,
+ int in_len, int out_len)
+{
+ struct rdma_ucm_bind cmd;
+ struct sockaddr *addr;
+ struct ucma_context *ctx;
+ int ret;
+
+ if (copy_from_user(&cmd, inbuf, sizeof(cmd)))
+ return -EFAULT;
+
+ addr = (struct sockaddr *) &cmd.addr;
+ if (cmd.reserved || !cmd.addr_size || (cmd.addr_size != rdma_addr_size(addr)))
+ return -EINVAL;
+
+ ctx = ucma_get_ctx(file, cmd.id);
+ if (IS_ERR(ctx))
+ return PTR_ERR(ctx);
+
+ ret = rdma_bind_addr(ctx->cm_id, addr);
+ ucma_put_ctx(ctx);
+ return ret;
+}
+
+static ssize_t ucma_resolve_ip(struct ucma_file *file,
+ const char __user *inbuf,
+ int in_len, int out_len)
+{
+ struct rdma_ucm_resolve_ip cmd;
+ struct ucma_context *ctx;
+ int ret;
+
+ if (copy_from_user(&cmd, inbuf, sizeof(cmd)))
+ return -EFAULT;
+
+ ctx = ucma_get_ctx(file, cmd.id);
+ if (IS_ERR(ctx))
+ return PTR_ERR(ctx);
+
+ ret = rdma_resolve_addr(ctx->cm_id, (struct sockaddr *) &cmd.src_addr,
+ (struct sockaddr *) &cmd.dst_addr,
+ cmd.timeout_ms);
+ ucma_put_ctx(ctx);
+ return ret;
+}
+
static ssize_t ucma_resolve_addr(struct ucma_file *file,
const char __user *inbuf,
int in_len, int out_len)
{
struct rdma_ucm_resolve_addr cmd;
+ struct sockaddr *src, *dst;
struct ucma_context *ctx;
int ret;
if (copy_from_user(&cmd, inbuf, sizeof(cmd)))
return -EFAULT;
+ src = (struct sockaddr *) &cmd.src_addr;
+ dst = (struct sockaddr *) &cmd.dst_addr;
+ if (cmd.reserved || (cmd.src_size && (cmd.src_size != rdma_addr_size(src))) ||
+ !cmd.dst_size || (cmd.dst_size != rdma_addr_size(dst)))
+ return -EINVAL;
+
ctx = ucma_get_ctx(file, cmd.id);
if (IS_ERR(ctx))
return PTR_ERR(ctx);
- ret = rdma_resolve_addr(ctx->cm_id, (struct sockaddr *) &cmd.src_addr,
- (struct sockaddr *) &cmd.dst_addr,
- cmd.timeout_ms);
+ ret = rdma_resolve_addr(ctx->cm_id, src, dst, cmd.timeout_ms);
ucma_put_ctx(ctx);
return ret;
}
@@ -649,7 +702,7 @@ static ssize_t ucma_query_route(struct ucma_file *file,
const char __user *inbuf,
int in_len, int out_len)
{
- struct rdma_ucm_query_route cmd;
+ struct rdma_ucm_query cmd;
struct rdma_ucm_query_route_resp resp;
struct ucma_context *ctx;
struct sockaddr *addr;
@@ -709,7 +762,162 @@ out:
return ret;
}
-static void ucma_copy_conn_param(struct rdma_conn_param *dst,
+static void ucma_query_device_addr(struct rdma_cm_id *cm_id,
+ struct rdma_ucm_query_addr_resp *resp)
+{
+ if (!cm_id->device)
+ return;
+
+ resp->node_guid = (__force __u64) cm_id->device->node_guid;
+ resp->port_num = cm_id->port_num;
+ resp->pkey = (__force __u16) cpu_to_be16(
+ ib_addr_get_pkey(&cm_id->route.addr.dev_addr));
+}
+
+static ssize_t ucma_query_addr(struct ucma_context *ctx,
+ void __user *response, int out_len)
+{
+ struct rdma_ucm_query_addr_resp resp;
+ struct sockaddr *addr;
+ int ret = 0;
+
+ if (out_len < sizeof(resp))
+ return -ENOSPC;
+
+ memset(&resp, 0, sizeof resp);
+
+ addr = (struct sockaddr *) &ctx->cm_id->route.addr.src_addr;
+ resp.src_size = rdma_addr_size(addr);
+ memcpy(&resp.src_addr, addr, resp.src_size);
+
+ addr = (struct sockaddr *) &ctx->cm_id->route.addr.dst_addr;
+ resp.dst_size = rdma_addr_size(addr);
+ memcpy(&resp.dst_addr, addr, resp.dst_size);
+
+ ucma_query_device_addr(ctx->cm_id, &resp);
+
+ if (copy_to_user(response, &resp, sizeof(resp)))
+ ret = -EFAULT;
+
+ return ret;
+}
+
+static ssize_t ucma_query_path(struct ucma_context *ctx,
+ void __user *response, int out_len)
+{
+ struct rdma_ucm_query_path_resp *resp;
+ int i, ret = 0;
+
+ if (out_len < sizeof(*resp))
+ return -ENOSPC;
+
+ resp = kzalloc(out_len, GFP_KERNEL);
+ if (!resp)
+ return -ENOMEM;
+
+ resp->num_paths = ctx->cm_id->route.num_paths;
+ for (i = 0, out_len -= sizeof(*resp);
+ i < resp->num_paths && out_len > sizeof(struct ib_path_rec_data);
+ i++, out_len -= sizeof(struct ib_path_rec_data)) {
+
+ resp->path_data[i].flags = IB_PATH_GMP | IB_PATH_PRIMARY |
+ IB_PATH_BIDIRECTIONAL;
+ ib_sa_pack_path(&ctx->cm_id->route.path_rec[i],
+ &resp->path_data[i].path_rec);
+ }
+
+ if (copy_to_user(response, resp,
+ sizeof(*resp) + (i * sizeof(struct ib_path_rec_data))))
+ ret = -EFAULT;
+
+ kfree(resp);
+ return ret;
+}
+
+static ssize_t ucma_query_gid(struct ucma_context *ctx,
+ void __user *response, int out_len)
+{
+ struct rdma_ucm_query_addr_resp resp;
+ struct sockaddr_ib *addr;
+ int ret = 0;
+
+ if (out_len < sizeof(resp))
+ return -ENOSPC;
+
+ memset(&resp, 0, sizeof resp);
+
+ ucma_query_device_addr(ctx->cm_id, &resp);
+
+ addr = (struct sockaddr_ib *) &resp.src_addr;
+ resp.src_size = sizeof(*addr);
+ if (ctx->cm_id->route.addr.src_addr.ss_family == AF_IB) {
+ memcpy(addr, &ctx->cm_id->route.addr.src_addr, resp.src_size);
+ } else {
+ addr->sib_family = AF_IB;
+ addr->sib_pkey = (__force __be16) resp.pkey;
+ rdma_addr_get_sgid(&ctx->cm_id->route.addr.dev_addr,
+ (union ib_gid *) &addr->sib_addr);
+ addr->sib_sid = rdma_get_service_id(ctx->cm_id, (struct sockaddr *)
+ &ctx->cm_id->route.addr.src_addr);
+ }
+
+ addr = (struct sockaddr_ib *) &resp.dst_addr;
+ resp.dst_size = sizeof(*addr);
+ if (ctx->cm_id->route.addr.dst_addr.ss_family == AF_IB) {
+ memcpy(addr, &ctx->cm_id->route.addr.dst_addr, resp.dst_size);
+ } else {
+ addr->sib_family = AF_IB;
+ addr->sib_pkey = (__force __be16) resp.pkey;
+ rdma_addr_get_dgid(&ctx->cm_id->route.addr.dev_addr,
+ (union ib_gid *) &addr->sib_addr);
+ addr->sib_sid = rdma_get_service_id(ctx->cm_id, (struct sockaddr *)
+ &ctx->cm_id->route.addr.dst_addr);
+ }
+
+ if (copy_to_user(response, &resp, sizeof(resp)))
+ ret = -EFAULT;
+
+ return ret;
+}
+
+static ssize_t ucma_query(struct ucma_file *file,
+ const char __user *inbuf,
+ int in_len, int out_len)
+{
+ struct rdma_ucm_query cmd;
+ struct ucma_context *ctx;
+ void __user *response;
+ int ret;
+
+ if (copy_from_user(&cmd, inbuf, sizeof(cmd)))
+ return -EFAULT;
+
+ response = (void __user *)(unsigned long) cmd.response;
+ ctx = ucma_get_ctx(file, cmd.id);
+ if (IS_ERR(ctx))
+ return PTR_ERR(ctx);
+
+ switch (cmd.option) {
+ case RDMA_USER_CM_QUERY_ADDR:
+ ret = ucma_query_addr(ctx, response, out_len);
+ break;
+ case RDMA_USER_CM_QUERY_PATH:
+ ret = ucma_query_path(ctx, response, out_len);
+ break;
+ case RDMA_USER_CM_QUERY_GID:
+ ret = ucma_query_gid(ctx, response, out_len);
+ break;
+ default:
+ ret = -ENOSYS;
+ break;
+ }
+
+ ucma_put_ctx(ctx);
+ return ret;
+}
+
+static void ucma_copy_conn_param(struct rdma_cm_id *id,
+ struct rdma_conn_param *dst,
struct rdma_ucm_conn_param *src)
{
dst->private_data = src->private_data;
@@ -721,6 +929,7 @@ static void ucma_copy_conn_param(struct rdma_conn_param *dst,
dst->rnr_retry_count = src->rnr_retry_count;
dst->srq = src->srq;
dst->qp_num = src->qp_num;
+ dst->qkey = (id->route.addr.src_addr.ss_family == AF_IB) ? src->qkey : 0;
}
static ssize_t ucma_connect(struct ucma_file *file, const char __user *inbuf,
@@ -741,7 +950,7 @@ static ssize_t ucma_connect(struct ucma_file *file, const char __user *inbuf,
if (IS_ERR(ctx))
return PTR_ERR(ctx);
- ucma_copy_conn_param(&conn_param, &cmd.conn_param);
+ ucma_copy_conn_param(ctx->cm_id, &conn_param, &cmd.conn_param);
ret = rdma_connect(ctx->cm_id, &conn_param);
ucma_put_ctx(ctx);
return ret;
@@ -784,7 +993,7 @@ static ssize_t ucma_accept(struct ucma_file *file, const char __user *inbuf,
return PTR_ERR(ctx);
if (cmd.conn_param.valid) {
- ucma_copy_conn_param(&conn_param, &cmd.conn_param);
+ ucma_copy_conn_param(ctx->cm_id, &conn_param, &cmd.conn_param);
mutex_lock(&file->mut);
ret = rdma_accept(ctx->cm_id, &conn_param);
if (!ret)
@@ -1020,23 +1229,23 @@ static ssize_t ucma_notify(struct ucma_file *file, const char __user *inbuf,
return ret;
}
-static ssize_t ucma_join_multicast(struct ucma_file *file,
- const char __user *inbuf,
- int in_len, int out_len)
+static ssize_t ucma_process_join(struct ucma_file *file,
+ struct rdma_ucm_join_mcast *cmd, int out_len)
{
- struct rdma_ucm_join_mcast cmd;
struct rdma_ucm_create_id_resp resp;
struct ucma_context *ctx;
struct ucma_multicast *mc;
+ struct sockaddr *addr;
int ret;
if (out_len < sizeof(resp))
return -ENOSPC;
- if (copy_from_user(&cmd, inbuf, sizeof(cmd)))
- return -EFAULT;
+ addr = (struct sockaddr *) &cmd->addr;
+ if (cmd->reserved || !cmd->addr_size || (cmd->addr_size != rdma_addr_size(addr)))
+ return -EINVAL;
- ctx = ucma_get_ctx(file, cmd.id);
+ ctx = ucma_get_ctx(file, cmd->id);
if (IS_ERR(ctx))
return PTR_ERR(ctx);
@@ -1047,14 +1256,14 @@ static ssize_t ucma_join_multicast(struct ucma_file *file,
goto err1;
}
- mc->uid = cmd.uid;
- memcpy(&mc->addr, &cmd.addr, sizeof cmd.addr);
+ mc->uid = cmd->uid;
+ memcpy(&mc->addr, addr, cmd->addr_size);
ret = rdma_join_multicast(ctx->cm_id, (struct sockaddr *) &mc->addr, mc);
if (ret)
goto err2;
resp.id = mc->id;
- if (copy_to_user((void __user *)(unsigned long)cmd.response,
+ if (copy_to_user((void __user *)(unsigned long) cmd->response,
&resp, sizeof(resp))) {
ret = -EFAULT;
goto err3;
@@ -1079,6 +1288,38 @@ err1:
return ret;
}
+static ssize_t ucma_join_ip_multicast(struct ucma_file *file,
+ const char __user *inbuf,
+ int in_len, int out_len)
+{
+ struct rdma_ucm_join_ip_mcast cmd;
+ struct rdma_ucm_join_mcast join_cmd;
+
+ if (copy_from_user(&cmd, inbuf, sizeof(cmd)))
+ return -EFAULT;
+
+ join_cmd.response = cmd.response;
+ join_cmd.uid = cmd.uid;
+ join_cmd.id = cmd.id;
+ join_cmd.addr_size = rdma_addr_size((struct sockaddr *) &cmd.addr);
+ join_cmd.reserved = 0;
+ memcpy(&join_cmd.addr, &cmd.addr, join_cmd.addr_size);
+
+ return ucma_process_join(file, &join_cmd, out_len);
+}
+
+static ssize_t ucma_join_multicast(struct ucma_file *file,
+ const char __user *inbuf,
+ int in_len, int out_len)
+{
+ struct rdma_ucm_join_mcast cmd;
+
+ if (copy_from_user(&cmd, inbuf, sizeof(cmd)))
+ return -EFAULT;
+
+ return ucma_process_join(file, &cmd, out_len);
+}
+
static ssize_t ucma_leave_multicast(struct ucma_file *file,
const char __user *inbuf,
int in_len, int out_len)
@@ -1221,25 +1462,29 @@ file_put:
static ssize_t (*ucma_cmd_table[])(struct ucma_file *file,
const char __user *inbuf,
int in_len, int out_len) = {
- [RDMA_USER_CM_CMD_CREATE_ID] = ucma_create_id,
- [RDMA_USER_CM_CMD_DESTROY_ID] = ucma_destroy_id,
- [RDMA_USER_CM_CMD_BIND_ADDR] = ucma_bind_addr,
- [RDMA_USER_CM_CMD_RESOLVE_ADDR] = ucma_resolve_addr,
- [RDMA_USER_CM_CMD_RESOLVE_ROUTE]= ucma_resolve_route,
- [RDMA_USER_CM_CMD_QUERY_ROUTE] = ucma_query_route,
- [RDMA_USER_CM_CMD_CONNECT] = ucma_connect,
- [RDMA_USER_CM_CMD_LISTEN] = ucma_listen,
- [RDMA_USER_CM_CMD_ACCEPT] = ucma_accept,
- [RDMA_USER_CM_CMD_REJECT] = ucma_reject,
- [RDMA_USER_CM_CMD_DISCONNECT] = ucma_disconnect,
- [RDMA_USER_CM_CMD_INIT_QP_ATTR] = ucma_init_qp_attr,
- [RDMA_USER_CM_CMD_GET_EVENT] = ucma_get_event,
- [RDMA_USER_CM_CMD_GET_OPTION] = NULL,
- [RDMA_USER_CM_CMD_SET_OPTION] = ucma_set_option,
- [RDMA_USER_CM_CMD_NOTIFY] = ucma_notify,
- [RDMA_USER_CM_CMD_JOIN_MCAST] = ucma_join_multicast,
- [RDMA_USER_CM_CMD_LEAVE_MCAST] = ucma_leave_multicast,
- [RDMA_USER_CM_CMD_MIGRATE_ID] = ucma_migrate_id
+ [RDMA_USER_CM_CMD_CREATE_ID] = ucma_create_id,
+ [RDMA_USER_CM_CMD_DESTROY_ID] = ucma_destroy_id,
+ [RDMA_USER_CM_CMD_BIND_IP] = ucma_bind_ip,
+ [RDMA_USER_CM_CMD_RESOLVE_IP] = ucma_resolve_ip,
+ [RDMA_USER_CM_CMD_RESOLVE_ROUTE] = ucma_resolve_route,
+ [RDMA_USER_CM_CMD_QUERY_ROUTE] = ucma_query_route,
+ [RDMA_USER_CM_CMD_CONNECT] = ucma_connect,
+ [RDMA_USER_CM_CMD_LISTEN] = ucma_listen,
+ [RDMA_USER_CM_CMD_ACCEPT] = ucma_accept,
+ [RDMA_USER_CM_CMD_REJECT] = ucma_reject,
+ [RDMA_USER_CM_CMD_DISCONNECT] = ucma_disconnect,
+ [RDMA_USER_CM_CMD_INIT_QP_ATTR] = ucma_init_qp_attr,
+ [RDMA_USER_CM_CMD_GET_EVENT] = ucma_get_event,
+ [RDMA_USER_CM_CMD_GET_OPTION] = NULL,
+ [RDMA_USER_CM_CMD_SET_OPTION] = ucma_set_option,
+ [RDMA_USER_CM_CMD_NOTIFY] = ucma_notify,
+ [RDMA_USER_CM_CMD_JOIN_IP_MCAST] = ucma_join_ip_multicast,
+ [RDMA_USER_CM_CMD_LEAVE_MCAST] = ucma_leave_multicast,
+ [RDMA_USER_CM_CMD_MIGRATE_ID] = ucma_migrate_id,
+ [RDMA_USER_CM_CMD_QUERY] = ucma_query,
+ [RDMA_USER_CM_CMD_BIND] = ucma_bind,
+ [RDMA_USER_CM_CMD_RESOLVE_ADDR] = ucma_resolve_addr,
+ [RDMA_USER_CM_CMD_JOIN_MCAST] = ucma_join_multicast
};
static ssize_t ucma_write(struct file *filp, const char __user *buf,
diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
index a7d00f6b3bc..b3c07b0c9f2 100644
--- a/drivers/infiniband/core/uverbs_cmd.c
+++ b/drivers/infiniband/core/uverbs_cmd.c
@@ -334,7 +334,7 @@ ssize_t ib_uverbs_get_context(struct ib_uverbs_file *file,
resp.num_comp_vectors = file->device->num_comp_vectors;
- ret = get_unused_fd();
+ ret = get_unused_fd_flags(O_CLOEXEC);
if (ret < 0)
goto err_free;
resp.async_fd = ret;
@@ -1184,7 +1184,7 @@ ssize_t ib_uverbs_create_comp_channel(struct ib_uverbs_file *file,
if (copy_from_user(&cmd, buf, sizeof cmd))
return -EFAULT;
- ret = get_unused_fd();
+ ret = get_unused_fd_flags(O_CLOEXEC);
if (ret < 0)
return ret;
resp.fd = ret;
diff --git a/drivers/infiniband/hw/cxgb3/iwch_qp.c b/drivers/infiniband/hw/cxgb3/iwch_qp.c
index e5649e8b215..b57c0befd96 100644
--- a/drivers/infiniband/hw/cxgb3/iwch_qp.c
+++ b/drivers/infiniband/hw/cxgb3/iwch_qp.c
@@ -883,7 +883,8 @@ u16 iwch_rqes_posted(struct iwch_qp *qhp)
{
union t3_wr *wqe = qhp->wq.queue;
u16 count = 0;
- while ((count+1) != 0 && fw_riwrh_opcode((struct fw_riwrh *)wqe) == T3_WR_RCV) {
+
+ while (count < USHRT_MAX && fw_riwrh_opcode((struct fw_riwrh *)wqe) == T3_WR_RCV) {
count++;
wqe++;
}
diff --git a/drivers/infiniband/hw/ehca/ehca_main.c b/drivers/infiniband/hw/ehca/ehca_main.c
index 982e3efd98d..cd8d290a09f 100644
--- a/drivers/infiniband/hw/ehca/ehca_main.c
+++ b/drivers/infiniband/hw/ehca/ehca_main.c
@@ -211,6 +211,7 @@ static int ehca_create_slab_caches(void)
if (!ctblk_cache) {
ehca_gen_err("Cannot create ctblk SLAB cache.");
ehca_cleanup_small_qp_cache();
+ ret = -ENOMEM;
goto create_slab_caches6;
}
#endif
diff --git a/drivers/infiniband/hw/mlx5/Kconfig b/drivers/infiniband/hw/mlx5/Kconfig
new file mode 100644
index 00000000000..8e6aebfaf8a
--- /dev/null
+++ b/drivers/infiniband/hw/mlx5/Kconfig
@@ -0,0 +1,10 @@
+config MLX5_INFINIBAND
+ tristate "Mellanox Connect-IB HCA support"
+ depends on NETDEVICES && ETHERNET && PCI && X86
+ select NET_VENDOR_MELLANOX
+ select MLX5_CORE
+ ---help---
+ This driver provides low-level InfiniBand support for
+ Mellanox Connect-IB PCI Express host channel adapters (HCAs).
+ This is required to use InfiniBand protocols such as
+ IP-over-IB or SRP with these devices.
diff --git a/drivers/infiniband/hw/mlx5/Makefile b/drivers/infiniband/hw/mlx5/Makefile
new file mode 100644
index 00000000000..4ea0135af48
--- /dev/null
+++ b/drivers/infiniband/hw/mlx5/Makefile
@@ -0,0 +1,3 @@
+obj-$(CONFIG_MLX5_INFINIBAND) += mlx5_ib.o
+
+mlx5_ib-y := main.o cq.o doorbell.o qp.o mem.o srq.o mr.o ah.o mad.o
diff --git a/drivers/infiniband/hw/mlx5/ah.c b/drivers/infiniband/hw/mlx5/ah.c
new file mode 100644
index 00000000000..39ab0caefdf
--- /dev/null
+++ b/drivers/infiniband/hw/mlx5/ah.c
@@ -0,0 +1,92 @@
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include "mlx5_ib.h"
+
+struct ib_ah *create_ib_ah(struct ib_ah_attr *ah_attr,
+ struct mlx5_ib_ah *ah)
+{
+ if (ah_attr->ah_flags & IB_AH_GRH) {
+ memcpy(ah->av.rgid, &ah_attr->grh.dgid, 16);
+ ah->av.grh_gid_fl = cpu_to_be32(ah_attr->grh.flow_label |
+ (1 << 30) |
+ ah_attr->grh.sgid_index << 20);
+ ah->av.hop_limit = ah_attr->grh.hop_limit;
+ ah->av.tclass = ah_attr->grh.traffic_class;
+ }
+
+ ah->av.rlid = cpu_to_be16(ah_attr->dlid);
+ ah->av.fl_mlid = ah_attr->src_path_bits & 0x7f;
+ ah->av.stat_rate_sl = (ah_attr->static_rate << 4) | (ah_attr->sl & 0xf);
+
+ return &ah->ibah;
+}
+
+struct ib_ah *mlx5_ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
+{
+ struct mlx5_ib_ah *ah;
+
+ ah = kzalloc(sizeof(*ah), GFP_ATOMIC);
+ if (!ah)
+ return ERR_PTR(-ENOMEM);
+
+ return create_ib_ah(ah_attr, ah); /* never fails */
+}
+
+int mlx5_ib_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr)
+{
+ struct mlx5_ib_ah *ah = to_mah(ibah);
+ u32 tmp;
+
+ memset(ah_attr, 0, sizeof(*ah_attr));
+
+ tmp = be32_to_cpu(ah->av.grh_gid_fl);
+ if (tmp & (1 << 30)) {
+ ah_attr->ah_flags = IB_AH_GRH;
+ ah_attr->grh.sgid_index = (tmp >> 20) & 0xff;
+ ah_attr->grh.flow_label = tmp & 0xfffff;
+ memcpy(&ah_attr->grh.dgid, ah->av.rgid, 16);
+ ah_attr->grh.hop_limit = ah->av.hop_limit;
+ ah_attr->grh.traffic_class = ah->av.tclass;
+ }
+ ah_attr->dlid = be16_to_cpu(ah->av.rlid);
+ ah_attr->static_rate = ah->av.stat_rate_sl >> 4;
+ ah_attr->sl = ah->av.stat_rate_sl & 0xf;
+
+ return 0;
+}
+
+int mlx5_ib_destroy_ah(struct ib_ah *ah)
+{
+ kfree(to_mah(ah));
+ return 0;
+}
diff --git a/drivers/infiniband/hw/mlx5/cq.c b/drivers/infiniband/hw/mlx5/cq.c
new file mode 100644
index 00000000000..344ab03948a
--- /dev/null
+++ b/drivers/infiniband/hw/mlx5/cq.c
@@ -0,0 +1,843 @@
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/kref.h>
+#include <rdma/ib_umem.h>
+#include "mlx5_ib.h"
+#include "user.h"
+
+static void mlx5_ib_cq_comp(struct mlx5_core_cq *cq)
+{
+ struct ib_cq *ibcq = &to_mibcq(cq)->ibcq;
+
+ ibcq->comp_handler(ibcq, ibcq->cq_context);
+}
+
+static void mlx5_ib_cq_event(struct mlx5_core_cq *mcq, enum mlx5_event type)
+{
+ struct mlx5_ib_cq *cq = container_of(mcq, struct mlx5_ib_cq, mcq);
+ struct mlx5_ib_dev *dev = to_mdev(cq->ibcq.device);
+ struct ib_cq *ibcq = &cq->ibcq;
+ struct ib_event event;
+
+ if (type != MLX5_EVENT_TYPE_CQ_ERROR) {
+ mlx5_ib_warn(dev, "Unexpected event type %d on CQ %06x\n",
+ type, mcq->cqn);
+ return;
+ }
+
+ if (ibcq->event_handler) {
+ event.device = &dev->ib_dev;
+ event.event = IB_EVENT_CQ_ERR;
+ event.element.cq = ibcq;
+ ibcq->event_handler(&event, ibcq->cq_context);
+ }
+}
+
+static void *get_cqe_from_buf(struct mlx5_ib_cq_buf *buf, int n, int size)
+{
+ return mlx5_buf_offset(&buf->buf, n * size);
+}
+
+static void *get_cqe(struct mlx5_ib_cq *cq, int n)
+{
+ return get_cqe_from_buf(&cq->buf, n, cq->mcq.cqe_sz);
+}
+
+static void *get_sw_cqe(struct mlx5_ib_cq *cq, int n)
+{
+ void *cqe = get_cqe(cq, n & cq->ibcq.cqe);
+ struct mlx5_cqe64 *cqe64;
+
+ cqe64 = (cq->mcq.cqe_sz == 64) ? cqe : cqe + 64;
+ return ((cqe64->op_own & MLX5_CQE_OWNER_MASK) ^
+ !!(n & (cq->ibcq.cqe + 1))) ? NULL : cqe;
+}
+
+static void *next_cqe_sw(struct mlx5_ib_cq *cq)
+{
+ return get_sw_cqe(cq, cq->mcq.cons_index);
+}
+
+static enum ib_wc_opcode get_umr_comp(struct mlx5_ib_wq *wq, int idx)
+{
+ switch (wq->wr_data[idx]) {
+ case MLX5_IB_WR_UMR:
+ return 0;
+
+ case IB_WR_LOCAL_INV:
+ return IB_WC_LOCAL_INV;
+
+ case IB_WR_FAST_REG_MR:
+ return IB_WC_FAST_REG_MR;
+
+ default:
+ pr_warn("unknown completion status\n");
+ return 0;
+ }
+}
+
+static void handle_good_req(struct ib_wc *wc, struct mlx5_cqe64 *cqe,
+ struct mlx5_ib_wq *wq, int idx)
+{
+ wc->wc_flags = 0;
+ switch (be32_to_cpu(cqe->sop_drop_qpn) >> 24) {
+ case MLX5_OPCODE_RDMA_WRITE_IMM:
+ wc->wc_flags |= IB_WC_WITH_IMM;
+ case MLX5_OPCODE_RDMA_WRITE:
+ wc->opcode = IB_WC_RDMA_WRITE;
+ break;
+ case MLX5_OPCODE_SEND_IMM:
+ wc->wc_flags |= IB_WC_WITH_IMM;
+ case MLX5_OPCODE_SEND:
+ case MLX5_OPCODE_SEND_INVAL:
+ wc->opcode = IB_WC_SEND;
+ break;
+ case MLX5_OPCODE_RDMA_READ:
+ wc->opcode = IB_WC_RDMA_READ;
+ wc->byte_len = be32_to_cpu(cqe->byte_cnt);
+ break;
+ case MLX5_OPCODE_ATOMIC_CS:
+ wc->opcode = IB_WC_COMP_SWAP;
+ wc->byte_len = 8;
+ break;
+ case MLX5_OPCODE_ATOMIC_FA:
+ wc->opcode = IB_WC_FETCH_ADD;
+ wc->byte_len = 8;
+ break;
+ case MLX5_OPCODE_ATOMIC_MASKED_CS:
+ wc->opcode = IB_WC_MASKED_COMP_SWAP;
+ wc->byte_len = 8;
+ break;
+ case MLX5_OPCODE_ATOMIC_MASKED_FA:
+ wc->opcode = IB_WC_MASKED_FETCH_ADD;
+ wc->byte_len = 8;
+ break;
+ case MLX5_OPCODE_BIND_MW:
+ wc->opcode = IB_WC_BIND_MW;
+ break;
+ case MLX5_OPCODE_UMR:
+ wc->opcode = get_umr_comp(wq, idx);
+ break;
+ }
+}
+
+enum {
+ MLX5_GRH_IN_BUFFER = 1,
+ MLX5_GRH_IN_CQE = 2,
+};
+
+static void handle_responder(struct ib_wc *wc, struct mlx5_cqe64 *cqe,
+ struct mlx5_ib_qp *qp)
+{
+ struct mlx5_ib_dev *dev = to_mdev(qp->ibqp.device);
+ struct mlx5_ib_srq *srq;
+ struct mlx5_ib_wq *wq;
+ u16 wqe_ctr;
+ u8 g;
+
+ if (qp->ibqp.srq || qp->ibqp.xrcd) {
+ struct mlx5_core_srq *msrq = NULL;
+
+ if (qp->ibqp.xrcd) {
+ msrq = mlx5_core_get_srq(&dev->mdev,
+ be32_to_cpu(cqe->srqn));
+ srq = to_mibsrq(msrq);
+ } else {
+ srq = to_msrq(qp->ibqp.srq);
+ }
+ if (srq) {
+ wqe_ctr = be16_to_cpu(cqe->wqe_counter);
+ wc->wr_id = srq->wrid[wqe_ctr];
+ mlx5_ib_free_srq_wqe(srq, wqe_ctr);
+ if (msrq && atomic_dec_and_test(&msrq->refcount))
+ complete(&msrq->free);
+ }
+ } else {
+ wq = &qp->rq;
+ wc->wr_id = wq->wrid[wq->tail & (wq->wqe_cnt - 1)];
+ ++wq->tail;
+ }
+ wc->byte_len = be32_to_cpu(cqe->byte_cnt);
+
+ switch (cqe->op_own >> 4) {
+ case MLX5_CQE_RESP_WR_IMM:
+ wc->opcode = IB_WC_RECV_RDMA_WITH_IMM;
+ wc->wc_flags = IB_WC_WITH_IMM;
+ wc->ex.imm_data = cqe->imm_inval_pkey;
+ break;
+ case MLX5_CQE_RESP_SEND:
+ wc->opcode = IB_WC_RECV;
+ wc->wc_flags = 0;
+ break;
+ case MLX5_CQE_RESP_SEND_IMM:
+ wc->opcode = IB_WC_RECV;
+ wc->wc_flags = IB_WC_WITH_IMM;
+ wc->ex.imm_data = cqe->imm_inval_pkey;
+ break;
+ case MLX5_CQE_RESP_SEND_INV:
+ wc->opcode = IB_WC_RECV;
+ wc->wc_flags = IB_WC_WITH_INVALIDATE;
+ wc->ex.invalidate_rkey = be32_to_cpu(cqe->imm_inval_pkey);
+ break;
+ }
+ wc->slid = be16_to_cpu(cqe->slid);
+ wc->sl = (be32_to_cpu(cqe->flags_rqpn) >> 24) & 0xf;
+ wc->src_qp = be32_to_cpu(cqe->flags_rqpn) & 0xffffff;
+ wc->dlid_path_bits = cqe->ml_path;
+ g = (be32_to_cpu(cqe->flags_rqpn) >> 28) & 3;
+ wc->wc_flags |= g ? IB_WC_GRH : 0;
+ wc->pkey_index = be32_to_cpu(cqe->imm_inval_pkey) & 0xffff;
+}
+
+static void dump_cqe(struct mlx5_ib_dev *dev, struct mlx5_err_cqe *cqe)
+{
+ __be32 *p = (__be32 *)cqe;
+ int i;
+
+ mlx5_ib_warn(dev, "dump error cqe\n");
+ for (i = 0; i < sizeof(*cqe) / 16; i++, p += 4)
+ pr_info("%08x %08x %08x %08x\n", be32_to_cpu(p[0]),
+ be32_to_cpu(p[1]), be32_to_cpu(p[2]),
+ be32_to_cpu(p[3]));
+}
+
+static void mlx5_handle_error_cqe(struct mlx5_ib_dev *dev,
+ struct mlx5_err_cqe *cqe,
+ struct ib_wc *wc)
+{
+ int dump = 1;
+
+ switch (cqe->syndrome) {
+ case MLX5_CQE_SYNDROME_LOCAL_LENGTH_ERR:
+ wc->status = IB_WC_LOC_LEN_ERR;
+ break;
+ case MLX5_CQE_SYNDROME_LOCAL_QP_OP_ERR:
+ wc->status = IB_WC_LOC_QP_OP_ERR;
+ break;
+ case MLX5_CQE_SYNDROME_LOCAL_PROT_ERR:
+ wc->status = IB_WC_LOC_PROT_ERR;
+ break;
+ case MLX5_CQE_SYNDROME_WR_FLUSH_ERR:
+ dump = 0;
+ wc->status = IB_WC_WR_FLUSH_ERR;
+ break;
+ case MLX5_CQE_SYNDROME_MW_BIND_ERR:
+ wc->status = IB_WC_MW_BIND_ERR;
+ break;
+ case MLX5_CQE_SYNDROME_BAD_RESP_ERR:
+ wc->status = IB_WC_BAD_RESP_ERR;
+ break;
+ case MLX5_CQE_SYNDROME_LOCAL_ACCESS_ERR:
+ wc->status = IB_WC_LOC_ACCESS_ERR;
+ break;
+ case MLX5_CQE_SYNDROME_REMOTE_INVAL_REQ_ERR:
+ wc->status = IB_WC_REM_INV_REQ_ERR;
+ break;
+ case MLX5_CQE_SYNDROME_REMOTE_ACCESS_ERR:
+ wc->status = IB_WC_REM_ACCESS_ERR;
+ break;
+ case MLX5_CQE_SYNDROME_REMOTE_OP_ERR:
+ wc->status = IB_WC_REM_OP_ERR;
+ break;
+ case MLX5_CQE_SYNDROME_TRANSPORT_RETRY_EXC_ERR:
+ wc->status = IB_WC_RETRY_EXC_ERR;
+ dump = 0;
+ break;
+ case MLX5_CQE_SYNDROME_RNR_RETRY_EXC_ERR:
+ wc->status = IB_WC_RNR_RETRY_EXC_ERR;
+ dump = 0;
+ break;
+ case MLX5_CQE_SYNDROME_REMOTE_ABORTED_ERR:
+ wc->status = IB_WC_REM_ABORT_ERR;
+ break;
+ default:
+ wc->status = IB_WC_GENERAL_ERR;
+ break;
+ }
+
+ wc->vendor_err = cqe->vendor_err_synd;
+ if (dump)
+ dump_cqe(dev, cqe);
+}
+
+static int is_atomic_response(struct mlx5_ib_qp *qp, uint16_t idx)
+{
+ /* TBD: waiting decision
+ */
+ return 0;
+}
+
+static void *mlx5_get_atomic_laddr(struct mlx5_ib_qp *qp, uint16_t idx)
+{
+ struct mlx5_wqe_data_seg *dpseg;
+ void *addr;
+
+ dpseg = mlx5_get_send_wqe(qp, idx) + sizeof(struct mlx5_wqe_ctrl_seg) +
+ sizeof(struct mlx5_wqe_raddr_seg) +
+ sizeof(struct mlx5_wqe_atomic_seg);
+ addr = (void *)(unsigned long)be64_to_cpu(dpseg->addr);
+ return addr;
+}
+
+static void handle_atomic(struct mlx5_ib_qp *qp, struct mlx5_cqe64 *cqe64,
+ uint16_t idx)
+{
+ void *addr;
+ int byte_count;
+ int i;
+
+ if (!is_atomic_response(qp, idx))
+ return;
+
+ byte_count = be32_to_cpu(cqe64->byte_cnt);
+ addr = mlx5_get_atomic_laddr(qp, idx);
+
+ if (byte_count == 4) {
+ *(uint32_t *)addr = be32_to_cpu(*((__be32 *)addr));
+ } else {
+ for (i = 0; i < byte_count; i += 8) {
+ *(uint64_t *)addr = be64_to_cpu(*((__be64 *)addr));
+ addr += 8;
+ }
+ }
+
+ return;
+}
+
+static void handle_atomics(struct mlx5_ib_qp *qp, struct mlx5_cqe64 *cqe64,
+ u16 tail, u16 head)
+{
+ int idx;
+
+ do {
+ idx = tail & (qp->sq.wqe_cnt - 1);
+ handle_atomic(qp, cqe64, idx);
+ if (idx == head)
+ break;
+
+ tail = qp->sq.w_list[idx].next;
+ } while (1);
+ tail = qp->sq.w_list[idx].next;
+ qp->sq.last_poll = tail;
+}
+
+static int mlx5_poll_one(struct mlx5_ib_cq *cq,
+ struct mlx5_ib_qp **cur_qp,
+ struct ib_wc *wc)
+{
+ struct mlx5_ib_dev *dev = to_mdev(cq->ibcq.device);
+ struct mlx5_err_cqe *err_cqe;
+ struct mlx5_cqe64 *cqe64;
+ struct mlx5_core_qp *mqp;
+ struct mlx5_ib_wq *wq;
+ uint8_t opcode;
+ uint32_t qpn;
+ u16 wqe_ctr;
+ void *cqe;
+ int idx;
+
+ cqe = next_cqe_sw(cq);
+ if (!cqe)
+ return -EAGAIN;
+
+ cqe64 = (cq->mcq.cqe_sz == 64) ? cqe : cqe + 64;
+
+ ++cq->mcq.cons_index;
+
+ /* Make sure we read CQ entry contents after we've checked the
+ * ownership bit.
+ */
+ rmb();
+
+ /* TBD: resize CQ */
+
+ qpn = ntohl(cqe64->sop_drop_qpn) & 0xffffff;
+ if (!*cur_qp || (qpn != (*cur_qp)->ibqp.qp_num)) {
+ /* We do not have to take the QP table lock here,
+ * because CQs will be locked while QPs are removed
+ * from the table.
+ */
+ mqp = __mlx5_qp_lookup(&dev->mdev, qpn);
+ if (unlikely(!mqp)) {
+ mlx5_ib_warn(dev, "CQE@CQ %06x for unknown QPN %6x\n",
+ cq->mcq.cqn, qpn);
+ return -EINVAL;
+ }
+
+ *cur_qp = to_mibqp(mqp);
+ }
+
+ wc->qp = &(*cur_qp)->ibqp;
+ opcode = cqe64->op_own >> 4;
+ switch (opcode) {
+ case MLX5_CQE_REQ:
+ wq = &(*cur_qp)->sq;
+ wqe_ctr = be16_to_cpu(cqe64->wqe_counter);
+ idx = wqe_ctr & (wq->wqe_cnt - 1);
+ handle_good_req(wc, cqe64, wq, idx);
+ handle_atomics(*cur_qp, cqe64, wq->last_poll, idx);
+ wc->wr_id = wq->wrid[idx];
+ wq->tail = wq->wqe_head[idx] + 1;
+ wc->status = IB_WC_SUCCESS;
+ break;
+ case MLX5_CQE_RESP_WR_IMM:
+ case MLX5_CQE_RESP_SEND:
+ case MLX5_CQE_RESP_SEND_IMM:
+ case MLX5_CQE_RESP_SEND_INV:
+ handle_responder(wc, cqe64, *cur_qp);
+ wc->status = IB_WC_SUCCESS;
+ break;
+ case MLX5_CQE_RESIZE_CQ:
+ break;
+ case MLX5_CQE_REQ_ERR:
+ case MLX5_CQE_RESP_ERR:
+ err_cqe = (struct mlx5_err_cqe *)cqe64;
+ mlx5_handle_error_cqe(dev, err_cqe, wc);
+ mlx5_ib_dbg(dev, "%s error cqe on cqn 0x%x:\n",
+ opcode == MLX5_CQE_REQ_ERR ?
+ "Requestor" : "Responder", cq->mcq.cqn);
+ mlx5_ib_dbg(dev, "syndrome 0x%x, vendor syndrome 0x%x\n",
+ err_cqe->syndrome, err_cqe->vendor_err_synd);
+ if (opcode == MLX5_CQE_REQ_ERR) {
+ wq = &(*cur_qp)->sq;
+ wqe_ctr = be16_to_cpu(cqe64->wqe_counter);
+ idx = wqe_ctr & (wq->wqe_cnt - 1);
+ wc->wr_id = wq->wrid[idx];
+ wq->tail = wq->wqe_head[idx] + 1;
+ } else {
+ struct mlx5_ib_srq *srq;
+
+ if ((*cur_qp)->ibqp.srq) {
+ srq = to_msrq((*cur_qp)->ibqp.srq);
+ wqe_ctr = be16_to_cpu(cqe64->wqe_counter);
+ wc->wr_id = srq->wrid[wqe_ctr];
+ mlx5_ib_free_srq_wqe(srq, wqe_ctr);
+ } else {
+ wq = &(*cur_qp)->rq;
+ wc->wr_id = wq->wrid[wq->tail & (wq->wqe_cnt - 1)];
+ ++wq->tail;
+ }
+ }
+ break;
+ }
+
+ return 0;
+}
+
+int mlx5_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc)
+{
+ struct mlx5_ib_cq *cq = to_mcq(ibcq);
+ struct mlx5_ib_qp *cur_qp = NULL;
+ unsigned long flags;
+ int npolled;
+ int err = 0;
+
+ spin_lock_irqsave(&cq->lock, flags);
+
+ for (npolled = 0; npolled < num_entries; npolled++) {
+ err = mlx5_poll_one(cq, &cur_qp, wc + npolled);
+ if (err)
+ break;
+ }
+
+ if (npolled)
+ mlx5_cq_set_ci(&cq->mcq);
+
+ spin_unlock_irqrestore(&cq->lock, flags);
+
+ if (err == 0 || err == -EAGAIN)
+ return npolled;
+ else
+ return err;
+}
+
+int mlx5_ib_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags)
+{
+ mlx5_cq_arm(&to_mcq(ibcq)->mcq,
+ (flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED ?
+ MLX5_CQ_DB_REQ_NOT_SOL : MLX5_CQ_DB_REQ_NOT,
+ to_mdev(ibcq->device)->mdev.priv.uuari.uars[0].map,
+ MLX5_GET_DOORBELL_LOCK(&to_mdev(ibcq->device)->mdev.priv.cq_uar_lock));
+
+ return 0;
+}
+
+static int alloc_cq_buf(struct mlx5_ib_dev *dev, struct mlx5_ib_cq_buf *buf,
+ int nent, int cqe_size)
+{
+ int err;
+
+ err = mlx5_buf_alloc(&dev->mdev, nent * cqe_size,
+ PAGE_SIZE * 2, &buf->buf);
+ if (err)
+ return err;
+
+ buf->cqe_size = cqe_size;
+
+ return 0;
+}
+
+static void free_cq_buf(struct mlx5_ib_dev *dev, struct mlx5_ib_cq_buf *buf)
+{
+ mlx5_buf_free(&dev->mdev, &buf->buf);
+}
+
+static int create_cq_user(struct mlx5_ib_dev *dev, struct ib_udata *udata,
+ struct ib_ucontext *context, struct mlx5_ib_cq *cq,
+ int entries, struct mlx5_create_cq_mbox_in **cqb,
+ int *cqe_size, int *index, int *inlen)
+{
+ struct mlx5_ib_create_cq ucmd;
+ int page_shift;
+ int npages;
+ int ncont;
+ int err;
+
+ if (ib_copy_from_udata(&ucmd, udata, sizeof(ucmd)))
+ return -EFAULT;
+
+ if (ucmd.cqe_size != 64 && ucmd.cqe_size != 128)
+ return -EINVAL;
+
+ *cqe_size = ucmd.cqe_size;
+
+ cq->buf.umem = ib_umem_get(context, ucmd.buf_addr,
+ entries * ucmd.cqe_size,
+ IB_ACCESS_LOCAL_WRITE, 1);
+ if (IS_ERR(cq->buf.umem)) {
+ err = PTR_ERR(cq->buf.umem);
+ return err;
+ }
+
+ err = mlx5_ib_db_map_user(to_mucontext(context), ucmd.db_addr,
+ &cq->db);
+ if (err)
+ goto err_umem;
+
+ mlx5_ib_cont_pages(cq->buf.umem, ucmd.buf_addr, &npages, &page_shift,
+ &ncont, NULL);
+ mlx5_ib_dbg(dev, "addr 0x%llx, size %u, npages %d, page_shift %d, ncont %d\n",
+ ucmd.buf_addr, entries * ucmd.cqe_size, npages, page_shift, ncont);
+
+ *inlen = sizeof(**cqb) + sizeof(*(*cqb)->pas) * ncont;
+ *cqb = mlx5_vzalloc(*inlen);
+ if (!*cqb) {
+ err = -ENOMEM;
+ goto err_db;
+ }
+ mlx5_ib_populate_pas(dev, cq->buf.umem, page_shift, (*cqb)->pas, 0);
+ (*cqb)->ctx.log_pg_sz = page_shift - PAGE_SHIFT;
+
+ *index = to_mucontext(context)->uuari.uars[0].index;
+
+ return 0;
+
+err_db:
+ mlx5_ib_db_unmap_user(to_mucontext(context), &cq->db);
+
+err_umem:
+ ib_umem_release(cq->buf.umem);
+ return err;
+}
+
+static void destroy_cq_user(struct mlx5_ib_cq *cq, struct ib_ucontext *context)
+{
+ mlx5_ib_db_unmap_user(to_mucontext(context), &cq->db);
+ ib_umem_release(cq->buf.umem);
+}
+
+static void init_cq_buf(struct mlx5_ib_cq *cq, int nent)
+{
+ int i;
+ void *cqe;
+ struct mlx5_cqe64 *cqe64;
+
+ for (i = 0; i < nent; i++) {
+ cqe = get_cqe(cq, i);
+ cqe64 = (cq->buf.cqe_size == 64) ? cqe : cqe + 64;
+ cqe64->op_own = 0xf1;
+ }
+}
+
+static int create_cq_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_cq *cq,
+ int entries, int cqe_size,
+ struct mlx5_create_cq_mbox_in **cqb,
+ int *index, int *inlen)
+{
+ int err;
+
+ err = mlx5_db_alloc(&dev->mdev, &cq->db);
+ if (err)
+ return err;
+
+ cq->mcq.set_ci_db = cq->db.db;
+ cq->mcq.arm_db = cq->db.db + 1;
+ *cq->mcq.set_ci_db = 0;
+ *cq->mcq.arm_db = 0;
+ cq->mcq.cqe_sz = cqe_size;
+
+ err = alloc_cq_buf(dev, &cq->buf, entries, cqe_size);
+ if (err)
+ goto err_db;
+
+ init_cq_buf(cq, entries);
+
+ *inlen = sizeof(**cqb) + sizeof(*(*cqb)->pas) * cq->buf.buf.npages;
+ *cqb = mlx5_vzalloc(*inlen);
+ if (!*cqb) {
+ err = -ENOMEM;
+ goto err_buf;
+ }
+ mlx5_fill_page_array(&cq->buf.buf, (*cqb)->pas);
+
+ (*cqb)->ctx.log_pg_sz = cq->buf.buf.page_shift - PAGE_SHIFT;
+ *index = dev->mdev.priv.uuari.uars[0].index;
+
+ return 0;
+
+err_buf:
+ free_cq_buf(dev, &cq->buf);
+
+err_db:
+ mlx5_db_free(&dev->mdev, &cq->db);
+ return err;
+}
+
+static void destroy_cq_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_cq *cq)
+{
+ free_cq_buf(dev, &cq->buf);
+ mlx5_db_free(&dev->mdev, &cq->db);
+}
+
+struct ib_cq *mlx5_ib_create_cq(struct ib_device *ibdev, int entries,
+ int vector, struct ib_ucontext *context,
+ struct ib_udata *udata)
+{
+ struct mlx5_create_cq_mbox_in *cqb = NULL;
+ struct mlx5_ib_dev *dev = to_mdev(ibdev);
+ struct mlx5_ib_cq *cq;
+ int uninitialized_var(index);
+ int uninitialized_var(inlen);
+ int cqe_size;
+ int irqn;
+ int eqn;
+ int err;
+
+ entries = roundup_pow_of_two(entries + 1);
+ if (entries < 1 || entries > dev->mdev.caps.max_cqes)
+ return ERR_PTR(-EINVAL);
+
+ cq = kzalloc(sizeof(*cq), GFP_KERNEL);
+ if (!cq)
+ return ERR_PTR(-ENOMEM);
+
+ cq->ibcq.cqe = entries - 1;
+ mutex_init(&cq->resize_mutex);
+ spin_lock_init(&cq->lock);
+ cq->resize_buf = NULL;
+ cq->resize_umem = NULL;
+
+ if (context) {
+ err = create_cq_user(dev, udata, context, cq, entries,
+ &cqb, &cqe_size, &index, &inlen);
+ if (err)
+ goto err_create;
+ } else {
+ /* for now choose 64 bytes till we have a proper interface */
+ cqe_size = 64;
+ err = create_cq_kernel(dev, cq, entries, cqe_size, &cqb,
+ &index, &inlen);
+ if (err)
+ goto err_create;
+ }
+
+ cq->cqe_size = cqe_size;
+ cqb->ctx.cqe_sz_flags = cqe_sz_to_mlx_sz(cqe_size) << 5;
+ cqb->ctx.log_sz_usr_page = cpu_to_be32((ilog2(entries) << 24) | index);
+ err = mlx5_vector2eqn(dev, vector, &eqn, &irqn);
+ if (err)
+ goto err_cqb;
+
+ cqb->ctx.c_eqn = cpu_to_be16(eqn);
+ cqb->ctx.db_record_addr = cpu_to_be64(cq->db.dma);
+
+ err = mlx5_core_create_cq(&dev->mdev, &cq->mcq, cqb, inlen);
+ if (err)
+ goto err_cqb;
+
+ mlx5_ib_dbg(dev, "cqn 0x%x\n", cq->mcq.cqn);
+ cq->mcq.irqn = irqn;
+ cq->mcq.comp = mlx5_ib_cq_comp;
+ cq->mcq.event = mlx5_ib_cq_event;
+
+ if (context)
+ if (ib_copy_to_udata(udata, &cq->mcq.cqn, sizeof(__u32))) {
+ err = -EFAULT;
+ goto err_cmd;
+ }
+
+
+ mlx5_vfree(cqb);
+ return &cq->ibcq;
+
+err_cmd:
+ mlx5_core_destroy_cq(&dev->mdev, &cq->mcq);
+
+err_cqb:
+ mlx5_vfree(cqb);
+ if (context)
+ destroy_cq_user(cq, context);
+ else
+ destroy_cq_kernel(dev, cq);
+
+err_create:
+ kfree(cq);
+
+ return ERR_PTR(err);
+}
+
+
+int mlx5_ib_destroy_cq(struct ib_cq *cq)
+{
+ struct mlx5_ib_dev *dev = to_mdev(cq->device);
+ struct mlx5_ib_cq *mcq = to_mcq(cq);
+ struct ib_ucontext *context = NULL;
+
+ if (cq->uobject)
+ context = cq->uobject->context;
+
+ mlx5_core_destroy_cq(&dev->mdev, &mcq->mcq);
+ if (context)
+ destroy_cq_user(mcq, context);
+ else
+ destroy_cq_kernel(dev, mcq);
+
+ kfree(mcq);
+
+ return 0;
+}
+
+static int is_equal_rsn(struct mlx5_cqe64 *cqe64, struct mlx5_ib_srq *srq,
+ u32 rsn)
+{
+ u32 lrsn;
+
+ if (srq)
+ lrsn = be32_to_cpu(cqe64->srqn) & 0xffffff;
+ else
+ lrsn = be32_to_cpu(cqe64->sop_drop_qpn) & 0xffffff;
+
+ return rsn == lrsn;
+}
+
+void __mlx5_ib_cq_clean(struct mlx5_ib_cq *cq, u32 rsn, struct mlx5_ib_srq *srq)
+{
+ struct mlx5_cqe64 *cqe64, *dest64;
+ void *cqe, *dest;
+ u32 prod_index;
+ int nfreed = 0;
+ u8 owner_bit;
+
+ if (!cq)
+ return;
+
+ /* First we need to find the current producer index, so we
+ * know where to start cleaning from. It doesn't matter if HW
+ * adds new entries after this loop -- the QP we're worried
+ * about is already in RESET, so the new entries won't come
+ * from our QP and therefore don't need to be checked.
+ */
+ for (prod_index = cq->mcq.cons_index; get_sw_cqe(cq, prod_index); prod_index++)
+ if (prod_index == cq->mcq.cons_index + cq->ibcq.cqe)
+ break;
+
+ /* Now sweep backwards through the CQ, removing CQ entries
+ * that match our QP by copying older entries on top of them.
+ */
+ while ((int) --prod_index - (int) cq->mcq.cons_index >= 0) {
+ cqe = get_cqe(cq, prod_index & cq->ibcq.cqe);
+ cqe64 = (cq->mcq.cqe_sz == 64) ? cqe : cqe + 64;
+ if (is_equal_rsn(cqe64, srq, rsn)) {
+ if (srq)
+ mlx5_ib_free_srq_wqe(srq, be16_to_cpu(cqe64->wqe_counter));
+ ++nfreed;
+ } else if (nfreed) {
+ dest = get_cqe(cq, (prod_index + nfreed) & cq->ibcq.cqe);
+ dest64 = (cq->mcq.cqe_sz == 64) ? dest : dest + 64;
+ owner_bit = dest64->op_own & MLX5_CQE_OWNER_MASK;
+ memcpy(dest, cqe, cq->mcq.cqe_sz);
+ dest64->op_own = owner_bit |
+ (dest64->op_own & ~MLX5_CQE_OWNER_MASK);
+ }
+ }
+
+ if (nfreed) {
+ cq->mcq.cons_index += nfreed;
+ /* Make sure update of buffer contents is done before
+ * updating consumer index.
+ */
+ wmb();
+ mlx5_cq_set_ci(&cq->mcq);
+ }
+}
+
+void mlx5_ib_cq_clean(struct mlx5_ib_cq *cq, u32 qpn, struct mlx5_ib_srq *srq)
+{
+ if (!cq)
+ return;
+
+ spin_lock_irq(&cq->lock);
+ __mlx5_ib_cq_clean(cq, qpn, srq);
+ spin_unlock_irq(&cq->lock);
+}
+
+int mlx5_ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period)
+{
+ return -ENOSYS;
+}
+
+int mlx5_ib_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata)
+{
+ return -ENOSYS;
+}
+
+int mlx5_ib_get_cqe_size(struct mlx5_ib_dev *dev, struct ib_cq *ibcq)
+{
+ struct mlx5_ib_cq *cq;
+
+ if (!ibcq)
+ return 128;
+
+ cq = to_mcq(ibcq);
+ return cq->cqe_size;
+}
diff --git a/drivers/infiniband/hw/mlx5/doorbell.c b/drivers/infiniband/hw/mlx5/doorbell.c
new file mode 100644
index 00000000000..256a23344f2
--- /dev/null
+++ b/drivers/infiniband/hw/mlx5/doorbell.c
@@ -0,0 +1,100 @@
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/kref.h>
+#include <linux/slab.h>
+#include <rdma/ib_umem.h>
+
+#include "mlx5_ib.h"
+
+struct mlx5_ib_user_db_page {
+ struct list_head list;
+ struct ib_umem *umem;
+ unsigned long user_virt;
+ int refcnt;
+};
+
+int mlx5_ib_db_map_user(struct mlx5_ib_ucontext *context, unsigned long virt,
+ struct mlx5_db *db)
+{
+ struct mlx5_ib_user_db_page *page;
+ struct ib_umem_chunk *chunk;
+ int err = 0;
+
+ mutex_lock(&context->db_page_mutex);
+
+ list_for_each_entry(page, &context->db_page_list, list)
+ if (page->user_virt == (virt & PAGE_MASK))
+ goto found;
+
+ page = kmalloc(sizeof(*page), GFP_KERNEL);
+ if (!page) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ page->user_virt = (virt & PAGE_MASK);
+ page->refcnt = 0;
+ page->umem = ib_umem_get(&context->ibucontext, virt & PAGE_MASK,
+ PAGE_SIZE, 0, 0);
+ if (IS_ERR(page->umem)) {
+ err = PTR_ERR(page->umem);
+ kfree(page);
+ goto out;
+ }
+
+ list_add(&page->list, &context->db_page_list);
+
+found:
+ chunk = list_entry(page->umem->chunk_list.next, struct ib_umem_chunk, list);
+ db->dma = sg_dma_address(chunk->page_list) + (virt & ~PAGE_MASK);
+ db->u.user_page = page;
+ ++page->refcnt;
+
+out:
+ mutex_unlock(&context->db_page_mutex);
+
+ return err;
+}
+
+void mlx5_ib_db_unmap_user(struct mlx5_ib_ucontext *context, struct mlx5_db *db)
+{
+ mutex_lock(&context->db_page_mutex);
+
+ if (!--db->u.user_page->refcnt) {
+ list_del(&db->u.user_page->list);
+ ib_umem_release(db->u.user_page->umem);
+ kfree(db->u.user_page);
+ }
+
+ mutex_unlock(&context->db_page_mutex);
+}
diff --git a/drivers/infiniband/hw/mlx5/mad.c b/drivers/infiniband/hw/mlx5/mad.c
new file mode 100644
index 00000000000..5c8938be0e0
--- /dev/null
+++ b/drivers/infiniband/hw/mlx5/mad.c
@@ -0,0 +1,139 @@
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/mlx5/cmd.h>
+#include <rdma/ib_mad.h>
+#include <rdma/ib_smi.h>
+#include "mlx5_ib.h"
+
+enum {
+ MLX5_IB_VENDOR_CLASS1 = 0x9,
+ MLX5_IB_VENDOR_CLASS2 = 0xa
+};
+
+int mlx5_MAD_IFC(struct mlx5_ib_dev *dev, int ignore_mkey, int ignore_bkey,
+ int port, struct ib_wc *in_wc, struct ib_grh *in_grh,
+ void *in_mad, void *response_mad)
+{
+ u8 op_modifier = 0;
+
+ /* Key check traps can't be generated unless we have in_wc to
+ * tell us where to send the trap.
+ */
+ if (ignore_mkey || !in_wc)
+ op_modifier |= 0x1;
+ if (ignore_bkey || !in_wc)
+ op_modifier |= 0x2;
+
+ return mlx5_core_mad_ifc(&dev->mdev, in_mad, response_mad, op_modifier, port);
+}
+
+int mlx5_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
+ struct ib_wc *in_wc, struct ib_grh *in_grh,
+ struct ib_mad *in_mad, struct ib_mad *out_mad)
+{
+ u16 slid;
+ int err;
+
+ slid = in_wc ? in_wc->slid : be16_to_cpu(IB_LID_PERMISSIVE);
+
+ if (in_mad->mad_hdr.method == IB_MGMT_METHOD_TRAP && slid == 0)
+ return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
+
+ if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED ||
+ in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) {
+ if (in_mad->mad_hdr.method != IB_MGMT_METHOD_GET &&
+ in_mad->mad_hdr.method != IB_MGMT_METHOD_SET &&
+ in_mad->mad_hdr.method != IB_MGMT_METHOD_TRAP_REPRESS)
+ return IB_MAD_RESULT_SUCCESS;
+
+ /* Don't process SMInfo queries -- the SMA can't handle them.
+ */
+ if (in_mad->mad_hdr.attr_id == IB_SMP_ATTR_SM_INFO)
+ return IB_MAD_RESULT_SUCCESS;
+ } else if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_PERF_MGMT ||
+ in_mad->mad_hdr.mgmt_class == MLX5_IB_VENDOR_CLASS1 ||
+ in_mad->mad_hdr.mgmt_class == MLX5_IB_VENDOR_CLASS2 ||
+ in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_CONG_MGMT) {
+ if (in_mad->mad_hdr.method != IB_MGMT_METHOD_GET &&
+ in_mad->mad_hdr.method != IB_MGMT_METHOD_SET)
+ return IB_MAD_RESULT_SUCCESS;
+ } else {
+ return IB_MAD_RESULT_SUCCESS;
+ }
+
+ err = mlx5_MAD_IFC(to_mdev(ibdev),
+ mad_flags & IB_MAD_IGNORE_MKEY,
+ mad_flags & IB_MAD_IGNORE_BKEY,
+ port_num, in_wc, in_grh, in_mad, out_mad);
+ if (err)
+ return IB_MAD_RESULT_FAILURE;
+
+ /* set return bit in status of directed route responses */
+ if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
+ out_mad->mad_hdr.status |= cpu_to_be16(1 << 15);
+
+ if (in_mad->mad_hdr.method == IB_MGMT_METHOD_TRAP_REPRESS)
+ /* no response for trap repress */
+ return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
+
+ return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
+}
+
+int mlx5_query_ext_port_caps(struct mlx5_ib_dev *dev, u8 port)
+{
+ struct ib_smp *in_mad = NULL;
+ struct ib_smp *out_mad = NULL;
+ int err = -ENOMEM;
+ u16 packet_error;
+
+ in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
+ out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
+ if (!in_mad || !out_mad)
+ goto out;
+
+ init_query_mad(in_mad);
+ in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO;
+ in_mad->attr_mod = cpu_to_be32(port);
+
+ err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
+
+ packet_error = be16_to_cpu(out_mad->status);
+
+ dev->mdev.caps.ext_port_cap[port - 1] = (!err && !packet_error) ?
+ MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO : 0;
+
+out:
+ kfree(in_mad);
+ kfree(out_mad);
+ return err;
+}
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
new file mode 100644
index 00000000000..8000fff4d44
--- /dev/null
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -0,0 +1,1504 @@
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <asm-generic/kmap_types.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/pci.h>
+#include <linux/dma-mapping.h>
+#include <linux/slab.h>
+#include <linux/io-mapping.h>
+#include <linux/sched.h>
+#include <rdma/ib_user_verbs.h>
+#include <rdma/ib_smi.h>
+#include <rdma/ib_umem.h>
+#include "user.h"
+#include "mlx5_ib.h"
+
+#define DRIVER_NAME "mlx5_ib"
+#define DRIVER_VERSION "1.0"
+#define DRIVER_RELDATE "June 2013"
+
+MODULE_AUTHOR("Eli Cohen <eli@mellanox.com>");
+MODULE_DESCRIPTION("Mellanox Connect-IB HCA IB driver");
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_VERSION(DRIVER_VERSION);
+
+static int prof_sel = 2;
+module_param_named(prof_sel, prof_sel, int, 0444);
+MODULE_PARM_DESC(prof_sel, "profile selector. Valid range 0 - 2");
+
+static char mlx5_version[] =
+ DRIVER_NAME ": Mellanox Connect-IB Infiniband driver v"
+ DRIVER_VERSION " (" DRIVER_RELDATE ")\n";
+
+static struct mlx5_profile profile[] = {
+ [0] = {
+ .mask = 0,
+ },
+ [1] = {
+ .mask = MLX5_PROF_MASK_QP_SIZE,
+ .log_max_qp = 12,
+ },
+ [2] = {
+ .mask = MLX5_PROF_MASK_QP_SIZE |
+ MLX5_PROF_MASK_MR_CACHE,
+ .log_max_qp = 17,
+ .mr_cache[0] = {
+ .size = 500,
+ .limit = 250
+ },
+ .mr_cache[1] = {
+ .size = 500,
+ .limit = 250
+ },
+ .mr_cache[2] = {
+ .size = 500,
+ .limit = 250
+ },
+ .mr_cache[3] = {
+ .size = 500,
+ .limit = 250
+ },
+ .mr_cache[4] = {
+ .size = 500,
+ .limit = 250
+ },
+ .mr_cache[5] = {
+ .size = 500,
+ .limit = 250
+ },
+ .mr_cache[6] = {
+ .size = 500,
+ .limit = 250
+ },
+ .mr_cache[7] = {
+ .size = 500,
+ .limit = 250
+ },
+ .mr_cache[8] = {
+ .size = 500,
+ .limit = 250
+ },
+ .mr_cache[9] = {
+ .size = 500,
+ .limit = 250
+ },
+ .mr_cache[10] = {
+ .size = 500,
+ .limit = 250
+ },
+ .mr_cache[11] = {
+ .size = 500,
+ .limit = 250
+ },
+ .mr_cache[12] = {
+ .size = 64,
+ .limit = 32
+ },
+ .mr_cache[13] = {
+ .size = 32,
+ .limit = 16
+ },
+ .mr_cache[14] = {
+ .size = 16,
+ .limit = 8
+ },
+ .mr_cache[15] = {
+ .size = 8,
+ .limit = 4
+ },
+ },
+};
+
+int mlx5_vector2eqn(struct mlx5_ib_dev *dev, int vector, int *eqn, int *irqn)
+{
+ struct mlx5_eq_table *table = &dev->mdev.priv.eq_table;
+ struct mlx5_eq *eq, *n;
+ int err = -ENOENT;
+
+ spin_lock(&table->lock);
+ list_for_each_entry_safe(eq, n, &dev->eqs_list, list) {
+ if (eq->index == vector) {
+ *eqn = eq->eqn;
+ *irqn = eq->irqn;
+ err = 0;
+ break;
+ }
+ }
+ spin_unlock(&table->lock);
+
+ return err;
+}
+
+static int alloc_comp_eqs(struct mlx5_ib_dev *dev)
+{
+ struct mlx5_eq_table *table = &dev->mdev.priv.eq_table;
+ struct mlx5_eq *eq, *n;
+ int ncomp_vec;
+ int nent;
+ int err;
+ int i;
+
+ INIT_LIST_HEAD(&dev->eqs_list);
+ ncomp_vec = table->num_comp_vectors;
+ nent = MLX5_COMP_EQ_SIZE;
+ for (i = 0; i < ncomp_vec; i++) {
+ eq = kzalloc(sizeof(*eq), GFP_KERNEL);
+ if (!eq) {
+ err = -ENOMEM;
+ goto clean;
+ }
+
+ snprintf(eq->name, MLX5_MAX_EQ_NAME, "mlx5_comp%d", i);
+ err = mlx5_create_map_eq(&dev->mdev, eq,
+ i + MLX5_EQ_VEC_COMP_BASE, nent, 0,
+ eq->name,
+ &dev->mdev.priv.uuari.uars[0]);
+ if (err) {
+ kfree(eq);
+ goto clean;
+ }
+ mlx5_ib_dbg(dev, "allocated completion EQN %d\n", eq->eqn);
+ eq->index = i;
+ spin_lock(&table->lock);
+ list_add_tail(&eq->list, &dev->eqs_list);
+ spin_unlock(&table->lock);
+ }
+
+ dev->num_comp_vectors = ncomp_vec;
+ return 0;
+
+clean:
+ spin_lock(&table->lock);
+ list_for_each_entry_safe(eq, n, &dev->eqs_list, list) {
+ list_del(&eq->list);
+ spin_unlock(&table->lock);
+ if (mlx5_destroy_unmap_eq(&dev->mdev, eq))
+ mlx5_ib_warn(dev, "failed to destroy EQ 0x%x\n", eq->eqn);
+ kfree(eq);
+ spin_lock(&table->lock);
+ }
+ spin_unlock(&table->lock);
+ return err;
+}
+
+static void free_comp_eqs(struct mlx5_ib_dev *dev)
+{
+ struct mlx5_eq_table *table = &dev->mdev.priv.eq_table;
+ struct mlx5_eq *eq, *n;
+
+ spin_lock(&table->lock);
+ list_for_each_entry_safe(eq, n, &dev->eqs_list, list) {
+ list_del(&eq->list);
+ spin_unlock(&table->lock);
+ if (mlx5_destroy_unmap_eq(&dev->mdev, eq))
+ mlx5_ib_warn(dev, "failed to destroy EQ 0x%x\n", eq->eqn);
+ kfree(eq);
+ spin_lock(&table->lock);
+ }
+ spin_unlock(&table->lock);
+}
+
+static int mlx5_ib_query_device(struct ib_device *ibdev,
+ struct ib_device_attr *props)
+{
+ struct mlx5_ib_dev *dev = to_mdev(ibdev);
+ struct ib_smp *in_mad = NULL;
+ struct ib_smp *out_mad = NULL;
+ int err = -ENOMEM;
+ int max_rq_sg;
+ int max_sq_sg;
+ u64 flags;
+
+ in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
+ out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
+ if (!in_mad || !out_mad)
+ goto out;
+
+ init_query_mad(in_mad);
+ in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
+
+ err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad, out_mad);
+ if (err)
+ goto out;
+
+ memset(props, 0, sizeof(*props));
+
+ props->fw_ver = ((u64)fw_rev_maj(&dev->mdev) << 32) |
+ (fw_rev_min(&dev->mdev) << 16) |
+ fw_rev_sub(&dev->mdev);
+ props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT |
+ IB_DEVICE_PORT_ACTIVE_EVENT |
+ IB_DEVICE_SYS_IMAGE_GUID |
+ IB_DEVICE_RC_RNR_NAK_GEN |
+ IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
+ flags = dev->mdev.caps.flags;
+ if (flags & MLX5_DEV_CAP_FLAG_BAD_PKEY_CNTR)
+ props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
+ if (flags & MLX5_DEV_CAP_FLAG_BAD_QKEY_CNTR)
+ props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
+ if (flags & MLX5_DEV_CAP_FLAG_APM)
+ props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
+ props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY;
+ if (flags & MLX5_DEV_CAP_FLAG_XRC)
+ props->device_cap_flags |= IB_DEVICE_XRC;
+ props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
+
+ props->vendor_id = be32_to_cpup((__be32 *)(out_mad->data + 36)) &
+ 0xffffff;
+ props->vendor_part_id = be16_to_cpup((__be16 *)(out_mad->data + 30));
+ props->hw_ver = be32_to_cpup((__be32 *)(out_mad->data + 32));
+ memcpy(&props->sys_image_guid, out_mad->data + 4, 8);
+
+ props->max_mr_size = ~0ull;
+ props->page_size_cap = dev->mdev.caps.min_page_sz;
+ props->max_qp = 1 << dev->mdev.caps.log_max_qp;
+ props->max_qp_wr = dev->mdev.caps.max_wqes;
+ max_rq_sg = dev->mdev.caps.max_rq_desc_sz / sizeof(struct mlx5_wqe_data_seg);
+ max_sq_sg = (dev->mdev.caps.max_sq_desc_sz - sizeof(struct mlx5_wqe_ctrl_seg)) /
+ sizeof(struct mlx5_wqe_data_seg);
+ props->max_sge = min(max_rq_sg, max_sq_sg);
+ props->max_cq = 1 << dev->mdev.caps.log_max_cq;
+ props->max_cqe = dev->mdev.caps.max_cqes - 1;
+ props->max_mr = 1 << dev->mdev.caps.log_max_mkey;
+ props->max_pd = 1 << dev->mdev.caps.log_max_pd;
+ props->max_qp_rd_atom = dev->mdev.caps.max_ra_req_qp;
+ props->max_qp_init_rd_atom = dev->mdev.caps.max_ra_res_qp;
+ props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp;
+ props->max_srq = 1 << dev->mdev.caps.log_max_srq;
+ props->max_srq_wr = dev->mdev.caps.max_srq_wqes - 1;
+ props->max_srq_sge = max_rq_sg - 1;
+ props->max_fast_reg_page_list_len = (unsigned int)-1;
+ props->local_ca_ack_delay = dev->mdev.caps.local_ca_ack_delay;
+ props->atomic_cap = dev->mdev.caps.flags & MLX5_DEV_CAP_FLAG_ATOMIC ?
+ IB_ATOMIC_HCA : IB_ATOMIC_NONE;
+ props->masked_atomic_cap = IB_ATOMIC_HCA;
+ props->max_pkeys = be16_to_cpup((__be16 *)(out_mad->data + 28));
+ props->max_mcast_grp = 1 << dev->mdev.caps.log_max_mcg;
+ props->max_mcast_qp_attach = dev->mdev.caps.max_qp_mcg;
+ props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
+ props->max_mcast_grp;
+ props->max_map_per_fmr = INT_MAX; /* no limit in ConnectIB */
+
+out:
+ kfree(in_mad);
+ kfree(out_mad);
+
+ return err;
+}
+
+int mlx5_ib_query_port(struct ib_device *ibdev, u8 port,
+ struct ib_port_attr *props)
+{
+ struct mlx5_ib_dev *dev = to_mdev(ibdev);
+ struct ib_smp *in_mad = NULL;
+ struct ib_smp *out_mad = NULL;
+ int ext_active_speed;
+ int err = -ENOMEM;
+
+ if (port < 1 || port > dev->mdev.caps.num_ports) {
+ mlx5_ib_warn(dev, "invalid port number %d\n", port);
+ return -EINVAL;
+ }
+
+ in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
+ out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
+ if (!in_mad || !out_mad)
+ goto out;
+
+ memset(props, 0, sizeof(*props));
+
+ init_query_mad(in_mad);
+ in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
+ in_mad->attr_mod = cpu_to_be32(port);
+
+ err = mlx5_MAD_IFC(dev, 1, 1, port, NULL, NULL, in_mad, out_mad);
+ if (err) {
+ mlx5_ib_warn(dev, "err %d\n", err);
+ goto out;
+ }
+
+
+ props->lid = be16_to_cpup((__be16 *)(out_mad->data + 16));
+ props->lmc = out_mad->data[34] & 0x7;
+ props->sm_lid = be16_to_cpup((__be16 *)(out_mad->data + 18));
+ props->sm_sl = out_mad->data[36] & 0xf;
+ props->state = out_mad->data[32] & 0xf;
+ props->phys_state = out_mad->data[33] >> 4;
+ props->port_cap_flags = be32_to_cpup((__be32 *)(out_mad->data + 20));
+ props->gid_tbl_len = out_mad->data[50];
+ props->max_msg_sz = 1 << to_mdev(ibdev)->mdev.caps.log_max_msg;
+ props->pkey_tbl_len = to_mdev(ibdev)->mdev.caps.port[port - 1].pkey_table_len;
+ props->bad_pkey_cntr = be16_to_cpup((__be16 *)(out_mad->data + 46));
+ props->qkey_viol_cntr = be16_to_cpup((__be16 *)(out_mad->data + 48));
+ props->active_width = out_mad->data[31] & 0xf;
+ props->active_speed = out_mad->data[35] >> 4;
+ props->max_mtu = out_mad->data[41] & 0xf;
+ props->active_mtu = out_mad->data[36] >> 4;
+ props->subnet_timeout = out_mad->data[51] & 0x1f;
+ props->max_vl_num = out_mad->data[37] >> 4;
+ props->init_type_reply = out_mad->data[41] >> 4;
+
+ /* Check if extended speeds (EDR/FDR/...) are supported */
+ if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
+ ext_active_speed = out_mad->data[62] >> 4;
+
+ switch (ext_active_speed) {
+ case 1:
+ props->active_speed = 16; /* FDR */
+ break;
+ case 2:
+ props->active_speed = 32; /* EDR */
+ break;
+ }
+ }
+
+ /* If reported active speed is QDR, check if is FDR-10 */
+ if (props->active_speed == 4) {
+ if (dev->mdev.caps.ext_port_cap[port - 1] &
+ MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO) {
+ init_query_mad(in_mad);
+ in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO;
+ in_mad->attr_mod = cpu_to_be32(port);
+
+ err = mlx5_MAD_IFC(dev, 1, 1, port,
+ NULL, NULL, in_mad, out_mad);
+ if (err)
+ goto out;
+
+ /* Checking LinkSpeedActive for FDR-10 */
+ if (out_mad->data[15] & 0x1)
+ props->active_speed = 8;
+ }
+ }
+
+out:
+ kfree(in_mad);
+ kfree(out_mad);
+
+ return err;
+}
+
+static int mlx5_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
+ union ib_gid *gid)
+{
+ struct ib_smp *in_mad = NULL;
+ struct ib_smp *out_mad = NULL;
+ int err = -ENOMEM;
+
+ in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
+ out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
+ if (!in_mad || !out_mad)
+ goto out;
+
+ init_query_mad(in_mad);
+ in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
+ in_mad->attr_mod = cpu_to_be32(port);
+
+ err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
+ if (err)
+ goto out;
+
+ memcpy(gid->raw, out_mad->data + 8, 8);
+
+ init_query_mad(in_mad);
+ in_mad->attr_id = IB_SMP_ATTR_GUID_INFO;
+ in_mad->attr_mod = cpu_to_be32(index / 8);
+
+ err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
+ if (err)
+ goto out;
+
+ memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
+
+out:
+ kfree(in_mad);
+ kfree(out_mad);
+ return err;
+}
+
+static int mlx5_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
+ u16 *pkey)
+{
+ struct ib_smp *in_mad = NULL;
+ struct ib_smp *out_mad = NULL;
+ int err = -ENOMEM;
+
+ in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
+ out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
+ if (!in_mad || !out_mad)
+ goto out;
+
+ init_query_mad(in_mad);
+ in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE;
+ in_mad->attr_mod = cpu_to_be32(index / 32);
+
+ err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
+ if (err)
+ goto out;
+
+ *pkey = be16_to_cpu(((__be16 *)out_mad->data)[index % 32]);
+
+out:
+ kfree(in_mad);
+ kfree(out_mad);
+ return err;
+}
+
+struct mlx5_reg_node_desc {
+ u8 desc[64];
+};
+
+static int mlx5_ib_modify_device(struct ib_device *ibdev, int mask,
+ struct ib_device_modify *props)
+{
+ struct mlx5_ib_dev *dev = to_mdev(ibdev);
+ struct mlx5_reg_node_desc in;
+ struct mlx5_reg_node_desc out;
+ int err;
+
+ if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
+ return -EOPNOTSUPP;
+
+ if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
+ return 0;
+
+ /*
+ * If possible, pass node desc to FW, so it can generate
+ * a 144 trap. If cmd fails, just ignore.
+ */
+ memcpy(&in, props->node_desc, 64);
+ err = mlx5_core_access_reg(&dev->mdev, &in, sizeof(in), &out,
+ sizeof(out), MLX5_REG_NODE_DESC, 0, 1);
+ if (err)
+ return err;
+
+ memcpy(ibdev->node_desc, props->node_desc, 64);
+
+ return err;
+}
+
+static int mlx5_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
+ struct ib_port_modify *props)
+{
+ struct mlx5_ib_dev *dev = to_mdev(ibdev);
+ struct ib_port_attr attr;
+ u32 tmp;
+ int err;
+
+ mutex_lock(&dev->cap_mask_mutex);
+
+ err = mlx5_ib_query_port(ibdev, port, &attr);
+ if (err)
+ goto out;
+
+ tmp = (attr.port_cap_flags | props->set_port_cap_mask) &
+ ~props->clr_port_cap_mask;
+
+ err = mlx5_set_port_caps(&dev->mdev, port, tmp);
+
+out:
+ mutex_unlock(&dev->cap_mask_mutex);
+ return err;
+}
+
+static struct ib_ucontext *mlx5_ib_alloc_ucontext(struct ib_device *ibdev,
+ struct ib_udata *udata)
+{
+ struct mlx5_ib_dev *dev = to_mdev(ibdev);
+ struct mlx5_ib_alloc_ucontext_req req;
+ struct mlx5_ib_alloc_ucontext_resp resp;
+ struct mlx5_ib_ucontext *context;
+ struct mlx5_uuar_info *uuari;
+ struct mlx5_uar *uars;
+ int num_uars;
+ int uuarn;
+ int err;
+ int i;
+
+ if (!dev->ib_active)
+ return ERR_PTR(-EAGAIN);
+
+ err = ib_copy_from_udata(&req, udata, sizeof(req));
+ if (err)
+ return ERR_PTR(err);
+
+ if (req.total_num_uuars > MLX5_MAX_UUARS)
+ return ERR_PTR(-ENOMEM);
+
+ if (req.total_num_uuars == 0)
+ return ERR_PTR(-EINVAL);
+
+ req.total_num_uuars = ALIGN(req.total_num_uuars, MLX5_BF_REGS_PER_PAGE);
+ if (req.num_low_latency_uuars > req.total_num_uuars - 1)
+ return ERR_PTR(-EINVAL);
+
+ num_uars = req.total_num_uuars / MLX5_BF_REGS_PER_PAGE;
+ resp.qp_tab_size = 1 << dev->mdev.caps.log_max_qp;
+ resp.bf_reg_size = dev->mdev.caps.bf_reg_size;
+ resp.cache_line_size = L1_CACHE_BYTES;
+ resp.max_sq_desc_sz = dev->mdev.caps.max_sq_desc_sz;
+ resp.max_rq_desc_sz = dev->mdev.caps.max_rq_desc_sz;
+ resp.max_send_wqebb = dev->mdev.caps.max_wqes;
+ resp.max_recv_wr = dev->mdev.caps.max_wqes;
+ resp.max_srq_recv_wr = dev->mdev.caps.max_srq_wqes;
+
+ context = kzalloc(sizeof(*context), GFP_KERNEL);
+ if (!context)
+ return ERR_PTR(-ENOMEM);
+
+ uuari = &context->uuari;
+ mutex_init(&uuari->lock);
+ uars = kcalloc(num_uars, sizeof(*uars), GFP_KERNEL);
+ if (!uars) {
+ err = -ENOMEM;
+ goto out_ctx;
+ }
+
+ uuari->bitmap = kcalloc(BITS_TO_LONGS(req.total_num_uuars),
+ sizeof(*uuari->bitmap),
+ GFP_KERNEL);
+ if (!uuari->bitmap) {
+ err = -ENOMEM;
+ goto out_uar_ctx;
+ }
+ /*
+ * clear all fast path uuars
+ */
+ for (i = 0; i < req.total_num_uuars; i++) {
+ uuarn = i & 3;
+ if (uuarn == 2 || uuarn == 3)
+ set_bit(i, uuari->bitmap);
+ }
+
+ uuari->count = kcalloc(req.total_num_uuars, sizeof(*uuari->count), GFP_KERNEL);
+ if (!uuari->count) {
+ err = -ENOMEM;
+ goto out_bitmap;
+ }
+
+ for (i = 0; i < num_uars; i++) {
+ err = mlx5_cmd_alloc_uar(&dev->mdev, &uars[i].index);
+ if (err)
+ goto out_count;
+ }
+
+ INIT_LIST_HEAD(&context->db_page_list);
+ mutex_init(&context->db_page_mutex);
+
+ resp.tot_uuars = req.total_num_uuars;
+ resp.num_ports = dev->mdev.caps.num_ports;
+ err = ib_copy_to_udata(udata, &resp, sizeof(resp));
+ if (err)
+ goto out_uars;
+
+ uuari->num_low_latency_uuars = req.num_low_latency_uuars;
+ uuari->uars = uars;
+ uuari->num_uars = num_uars;
+ return &context->ibucontext;
+
+out_uars:
+ for (i--; i >= 0; i--)
+ mlx5_cmd_free_uar(&dev->mdev, uars[i].index);
+out_count:
+ kfree(uuari->count);
+
+out_bitmap:
+ kfree(uuari->bitmap);
+
+out_uar_ctx:
+ kfree(uars);
+
+out_ctx:
+ kfree(context);
+ return ERR_PTR(err);
+}
+
+static int mlx5_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
+{
+ struct mlx5_ib_ucontext *context = to_mucontext(ibcontext);
+ struct mlx5_ib_dev *dev = to_mdev(ibcontext->device);
+ struct mlx5_uuar_info *uuari = &context->uuari;
+ int i;
+
+ for (i = 0; i < uuari->num_uars; i++) {
+ if (mlx5_cmd_free_uar(&dev->mdev, uuari->uars[i].index))
+ mlx5_ib_warn(dev, "failed to free UAR 0x%x\n", uuari->uars[i].index);
+ }
+
+ kfree(uuari->count);
+ kfree(uuari->bitmap);
+ kfree(uuari->uars);
+ kfree(context);
+
+ return 0;
+}
+
+static phys_addr_t uar_index2pfn(struct mlx5_ib_dev *dev, int index)
+{
+ return (pci_resource_start(dev->mdev.pdev, 0) >> PAGE_SHIFT) + index;
+}
+
+static int get_command(unsigned long offset)
+{
+ return (offset >> MLX5_IB_MMAP_CMD_SHIFT) & MLX5_IB_MMAP_CMD_MASK;
+}
+
+static int get_arg(unsigned long offset)
+{
+ return offset & ((1 << MLX5_IB_MMAP_CMD_SHIFT) - 1);
+}
+
+static int get_index(unsigned long offset)
+{
+ return get_arg(offset);
+}
+
+static int mlx5_ib_mmap(struct ib_ucontext *ibcontext, struct vm_area_struct *vma)
+{
+ struct mlx5_ib_ucontext *context = to_mucontext(ibcontext);
+ struct mlx5_ib_dev *dev = to_mdev(ibcontext->device);
+ struct mlx5_uuar_info *uuari = &context->uuari;
+ unsigned long command;
+ unsigned long idx;
+ phys_addr_t pfn;
+
+ command = get_command(vma->vm_pgoff);
+ switch (command) {
+ case MLX5_IB_MMAP_REGULAR_PAGE:
+ if (vma->vm_end - vma->vm_start != PAGE_SIZE)
+ return -EINVAL;
+
+ idx = get_index(vma->vm_pgoff);
+ pfn = uar_index2pfn(dev, uuari->uars[idx].index);
+ mlx5_ib_dbg(dev, "uar idx 0x%lx, pfn 0x%llx\n", idx,
+ (unsigned long long)pfn);
+
+ if (idx >= uuari->num_uars)
+ return -EINVAL;
+
+ vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
+ if (io_remap_pfn_range(vma, vma->vm_start, pfn,
+ PAGE_SIZE, vma->vm_page_prot))
+ return -EAGAIN;
+
+ mlx5_ib_dbg(dev, "mapped WC at 0x%lx, PA 0x%llx\n",
+ vma->vm_start,
+ (unsigned long long)pfn << PAGE_SHIFT);
+ break;
+
+ case MLX5_IB_MMAP_GET_CONTIGUOUS_PAGES:
+ return -ENOSYS;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int alloc_pa_mkey(struct mlx5_ib_dev *dev, u32 *key, u32 pdn)
+{
+ struct mlx5_create_mkey_mbox_in *in;
+ struct mlx5_mkey_seg *seg;
+ struct mlx5_core_mr mr;
+ int err;
+
+ in = kzalloc(sizeof(*in), GFP_KERNEL);
+ if (!in)
+ return -ENOMEM;
+
+ seg = &in->seg;
+ seg->flags = MLX5_PERM_LOCAL_READ | MLX5_ACCESS_MODE_PA;
+ seg->flags_pd = cpu_to_be32(pdn | MLX5_MKEY_LEN64);
+ seg->qpn_mkey7_0 = cpu_to_be32(0xffffff << 8);
+ seg->start_addr = 0;
+
+ err = mlx5_core_create_mkey(&dev->mdev, &mr, in, sizeof(*in));
+ if (err) {
+ mlx5_ib_warn(dev, "failed to create mkey, %d\n", err);
+ goto err_in;
+ }
+
+ kfree(in);
+ *key = mr.key;
+
+ return 0;
+
+err_in:
+ kfree(in);
+
+ return err;
+}
+
+static void free_pa_mkey(struct mlx5_ib_dev *dev, u32 key)
+{
+ struct mlx5_core_mr mr;
+ int err;
+
+ memset(&mr, 0, sizeof(mr));
+ mr.key = key;
+ err = mlx5_core_destroy_mkey(&dev->mdev, &mr);
+ if (err)
+ mlx5_ib_warn(dev, "failed to destroy mkey 0x%x\n", key);
+}
+
+static struct ib_pd *mlx5_ib_alloc_pd(struct ib_device *ibdev,
+ struct ib_ucontext *context,
+ struct ib_udata *udata)
+{
+ struct mlx5_ib_alloc_pd_resp resp;
+ struct mlx5_ib_pd *pd;
+ int err;
+
+ pd = kmalloc(sizeof(*pd), GFP_KERNEL);
+ if (!pd)
+ return ERR_PTR(-ENOMEM);
+
+ err = mlx5_core_alloc_pd(&to_mdev(ibdev)->mdev, &pd->pdn);
+ if (err) {
+ kfree(pd);
+ return ERR_PTR(err);
+ }
+
+ if (context) {
+ resp.pdn = pd->pdn;
+ if (ib_copy_to_udata(udata, &resp, sizeof(resp))) {
+ mlx5_core_dealloc_pd(&to_mdev(ibdev)->mdev, pd->pdn);
+ kfree(pd);
+ return ERR_PTR(-EFAULT);
+ }
+ } else {
+ err = alloc_pa_mkey(to_mdev(ibdev), &pd->pa_lkey, pd->pdn);
+ if (err) {
+ mlx5_core_dealloc_pd(&to_mdev(ibdev)->mdev, pd->pdn);
+ kfree(pd);
+ return ERR_PTR(err);
+ }
+ }
+
+ return &pd->ibpd;
+}
+
+static int mlx5_ib_dealloc_pd(struct ib_pd *pd)
+{
+ struct mlx5_ib_dev *mdev = to_mdev(pd->device);
+ struct mlx5_ib_pd *mpd = to_mpd(pd);
+
+ if (!pd->uobject)
+ free_pa_mkey(mdev, mpd->pa_lkey);
+
+ mlx5_core_dealloc_pd(&mdev->mdev, mpd->pdn);
+ kfree(mpd);
+
+ return 0;
+}
+
+static int mlx5_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
+{
+ struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
+ int err;
+
+ err = mlx5_core_attach_mcg(&dev->mdev, gid, ibqp->qp_num);
+ if (err)
+ mlx5_ib_warn(dev, "failed attaching QPN 0x%x, MGID %pI6\n",
+ ibqp->qp_num, gid->raw);
+
+ return err;
+}
+
+static int mlx5_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
+{
+ struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
+ int err;
+
+ err = mlx5_core_detach_mcg(&dev->mdev, gid, ibqp->qp_num);
+ if (err)
+ mlx5_ib_warn(dev, "failed detaching QPN 0x%x, MGID %pI6\n",
+ ibqp->qp_num, gid->raw);
+
+ return err;
+}
+
+static int init_node_data(struct mlx5_ib_dev *dev)
+{
+ struct ib_smp *in_mad = NULL;
+ struct ib_smp *out_mad = NULL;
+ int err = -ENOMEM;
+
+ in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
+ out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
+ if (!in_mad || !out_mad)
+ goto out;
+
+ init_query_mad(in_mad);
+ in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
+
+ err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
+ if (err)
+ goto out;
+
+ memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
+
+ in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
+
+ err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
+ if (err)
+ goto out;
+
+ dev->mdev.rev_id = be32_to_cpup((__be32 *)(out_mad->data + 32));
+ memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
+
+out:
+ kfree(in_mad);
+ kfree(out_mad);
+ return err;
+}
+
+static ssize_t show_fw_pages(struct device *device, struct device_attribute *attr,
+ char *buf)
+{
+ struct mlx5_ib_dev *dev =
+ container_of(device, struct mlx5_ib_dev, ib_dev.dev);
+
+ return sprintf(buf, "%d\n", dev->mdev.priv.fw_pages);
+}
+
+static ssize_t show_reg_pages(struct device *device,
+ struct device_attribute *attr, char *buf)
+{
+ struct mlx5_ib_dev *dev =
+ container_of(device, struct mlx5_ib_dev, ib_dev.dev);
+
+ return sprintf(buf, "%d\n", dev->mdev.priv.reg_pages);
+}
+
+static ssize_t show_hca(struct device *device, struct device_attribute *attr,
+ char *buf)
+{
+ struct mlx5_ib_dev *dev =
+ container_of(device, struct mlx5_ib_dev, ib_dev.dev);
+ return sprintf(buf, "MT%d\n", dev->mdev.pdev->device);
+}
+
+static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
+ char *buf)
+{
+ struct mlx5_ib_dev *dev =
+ container_of(device, struct mlx5_ib_dev, ib_dev.dev);
+ return sprintf(buf, "%d.%d.%d\n", fw_rev_maj(&dev->mdev),
+ fw_rev_min(&dev->mdev), fw_rev_sub(&dev->mdev));
+}
+
+static ssize_t show_rev(struct device *device, struct device_attribute *attr,
+ char *buf)
+{
+ struct mlx5_ib_dev *dev =
+ container_of(device, struct mlx5_ib_dev, ib_dev.dev);
+ return sprintf(buf, "%x\n", dev->mdev.rev_id);
+}
+
+static ssize_t show_board(struct device *device, struct device_attribute *attr,
+ char *buf)
+{
+ struct mlx5_ib_dev *dev =
+ container_of(device, struct mlx5_ib_dev, ib_dev.dev);
+ return sprintf(buf, "%.*s\n", MLX5_BOARD_ID_LEN,
+ dev->mdev.board_id);
+}
+
+static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
+static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
+static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
+static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
+static DEVICE_ATTR(fw_pages, S_IRUGO, show_fw_pages, NULL);
+static DEVICE_ATTR(reg_pages, S_IRUGO, show_reg_pages, NULL);
+
+static struct device_attribute *mlx5_class_attributes[] = {
+ &dev_attr_hw_rev,
+ &dev_attr_fw_ver,
+ &dev_attr_hca_type,
+ &dev_attr_board_id,
+ &dev_attr_fw_pages,
+ &dev_attr_reg_pages,
+};
+
+static void mlx5_ib_event(struct mlx5_core_dev *dev, enum mlx5_dev_event event,
+ void *data)
+{
+ struct mlx5_ib_dev *ibdev = container_of(dev, struct mlx5_ib_dev, mdev);
+ struct ib_event ibev;
+ u8 port = 0;
+
+ switch (event) {
+ case MLX5_DEV_EVENT_SYS_ERROR:
+ ibdev->ib_active = false;
+ ibev.event = IB_EVENT_DEVICE_FATAL;
+ break;
+
+ case MLX5_DEV_EVENT_PORT_UP:
+ ibev.event = IB_EVENT_PORT_ACTIVE;
+ port = *(u8 *)data;
+ break;
+
+ case MLX5_DEV_EVENT_PORT_DOWN:
+ ibev.event = IB_EVENT_PORT_ERR;
+ port = *(u8 *)data;
+ break;
+
+ case MLX5_DEV_EVENT_PORT_INITIALIZED:
+ /* not used by ULPs */
+ return;
+
+ case MLX5_DEV_EVENT_LID_CHANGE:
+ ibev.event = IB_EVENT_LID_CHANGE;
+ port = *(u8 *)data;
+ break;
+
+ case MLX5_DEV_EVENT_PKEY_CHANGE:
+ ibev.event = IB_EVENT_PKEY_CHANGE;
+ port = *(u8 *)data;
+ break;
+
+ case MLX5_DEV_EVENT_GUID_CHANGE:
+ ibev.event = IB_EVENT_GID_CHANGE;
+ port = *(u8 *)data;
+ break;
+
+ case MLX5_DEV_EVENT_CLIENT_REREG:
+ ibev.event = IB_EVENT_CLIENT_REREGISTER;
+ port = *(u8 *)data;
+ break;
+ }
+
+ ibev.device = &ibdev->ib_dev;
+ ibev.element.port_num = port;
+
+ if (ibdev->ib_active)
+ ib_dispatch_event(&ibev);
+}
+
+static void get_ext_port_caps(struct mlx5_ib_dev *dev)
+{
+ int port;
+
+ for (port = 1; port <= dev->mdev.caps.num_ports; port++)
+ mlx5_query_ext_port_caps(dev, port);
+}
+
+static int get_port_caps(struct mlx5_ib_dev *dev)
+{
+ struct ib_device_attr *dprops = NULL;
+ struct ib_port_attr *pprops = NULL;
+ int err = 0;
+ int port;
+
+ pprops = kmalloc(sizeof(*pprops), GFP_KERNEL);
+ if (!pprops)
+ goto out;
+
+ dprops = kmalloc(sizeof(*dprops), GFP_KERNEL);
+ if (!dprops)
+ goto out;
+
+ err = mlx5_ib_query_device(&dev->ib_dev, dprops);
+ if (err) {
+ mlx5_ib_warn(dev, "query_device failed %d\n", err);
+ goto out;
+ }
+
+ for (port = 1; port <= dev->mdev.caps.num_ports; port++) {
+ err = mlx5_ib_query_port(&dev->ib_dev, port, pprops);
+ if (err) {
+ mlx5_ib_warn(dev, "query_port %d failed %d\n", port, err);
+ break;
+ }
+ dev->mdev.caps.port[port - 1].pkey_table_len = dprops->max_pkeys;
+ dev->mdev.caps.port[port - 1].gid_table_len = pprops->gid_tbl_len;
+ mlx5_ib_dbg(dev, "pkey_table_len %d, gid_table_len %d\n",
+ dprops->max_pkeys, pprops->gid_tbl_len);
+ }
+
+out:
+ kfree(pprops);
+ kfree(dprops);
+
+ return err;
+}
+
+static void destroy_umrc_res(struct mlx5_ib_dev *dev)
+{
+ int err;
+
+ err = mlx5_mr_cache_cleanup(dev);
+ if (err)
+ mlx5_ib_warn(dev, "mr cache cleanup failed\n");
+
+ mlx5_ib_destroy_qp(dev->umrc.qp);
+ ib_destroy_cq(dev->umrc.cq);
+ ib_dereg_mr(dev->umrc.mr);
+ ib_dealloc_pd(dev->umrc.pd);
+}
+
+enum {
+ MAX_UMR_WR = 128,
+};
+
+static int create_umr_res(struct mlx5_ib_dev *dev)
+{
+ struct ib_qp_init_attr *init_attr = NULL;
+ struct ib_qp_attr *attr = NULL;
+ struct ib_pd *pd;
+ struct ib_cq *cq;
+ struct ib_qp *qp;
+ struct ib_mr *mr;
+ int ret;
+
+ attr = kzalloc(sizeof(*attr), GFP_KERNEL);
+ init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
+ if (!attr || !init_attr) {
+ ret = -ENOMEM;
+ goto error_0;
+ }
+
+ pd = ib_alloc_pd(&dev->ib_dev);
+ if (IS_ERR(pd)) {
+ mlx5_ib_dbg(dev, "Couldn't create PD for sync UMR QP\n");
+ ret = PTR_ERR(pd);
+ goto error_0;
+ }
+
+ mr = ib_get_dma_mr(pd, IB_ACCESS_LOCAL_WRITE);
+ if (IS_ERR(mr)) {
+ mlx5_ib_dbg(dev, "Couldn't create DMA MR for sync UMR QP\n");
+ ret = PTR_ERR(mr);
+ goto error_1;
+ }
+
+ cq = ib_create_cq(&dev->ib_dev, mlx5_umr_cq_handler, NULL, NULL, 128,
+ 0);
+ if (IS_ERR(cq)) {
+ mlx5_ib_dbg(dev, "Couldn't create CQ for sync UMR QP\n");
+ ret = PTR_ERR(cq);
+ goto error_2;
+ }
+ ib_req_notify_cq(cq, IB_CQ_NEXT_COMP);
+
+ init_attr->send_cq = cq;
+ init_attr->recv_cq = cq;
+ init_attr->sq_sig_type = IB_SIGNAL_ALL_WR;
+ init_attr->cap.max_send_wr = MAX_UMR_WR;
+ init_attr->cap.max_send_sge = 1;
+ init_attr->qp_type = MLX5_IB_QPT_REG_UMR;
+ init_attr->port_num = 1;
+ qp = mlx5_ib_create_qp(pd, init_attr, NULL);
+ if (IS_ERR(qp)) {
+ mlx5_ib_dbg(dev, "Couldn't create sync UMR QP\n");
+ ret = PTR_ERR(qp);
+ goto error_3;
+ }
+ qp->device = &dev->ib_dev;
+ qp->real_qp = qp;
+ qp->uobject = NULL;
+ qp->qp_type = MLX5_IB_QPT_REG_UMR;
+
+ attr->qp_state = IB_QPS_INIT;
+ attr->port_num = 1;
+ ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE | IB_QP_PKEY_INDEX |
+ IB_QP_PORT, NULL);
+ if (ret) {
+ mlx5_ib_dbg(dev, "Couldn't modify UMR QP\n");
+ goto error_4;
+ }
+
+ memset(attr, 0, sizeof(*attr));
+ attr->qp_state = IB_QPS_RTR;
+ attr->path_mtu = IB_MTU_256;
+
+ ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE, NULL);
+ if (ret) {
+ mlx5_ib_dbg(dev, "Couldn't modify umr QP to rtr\n");
+ goto error_4;
+ }
+
+ memset(attr, 0, sizeof(*attr));
+ attr->qp_state = IB_QPS_RTS;
+ ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE, NULL);
+ if (ret) {
+ mlx5_ib_dbg(dev, "Couldn't modify umr QP to rts\n");
+ goto error_4;
+ }
+
+ dev->umrc.qp = qp;
+ dev->umrc.cq = cq;
+ dev->umrc.mr = mr;
+ dev->umrc.pd = pd;
+
+ sema_init(&dev->umrc.sem, MAX_UMR_WR);
+ ret = mlx5_mr_cache_init(dev);
+ if (ret) {
+ mlx5_ib_warn(dev, "mr cache init failed %d\n", ret);
+ goto error_4;
+ }
+
+ kfree(attr);
+ kfree(init_attr);
+
+ return 0;
+
+error_4:
+ mlx5_ib_destroy_qp(qp);
+
+error_3:
+ ib_destroy_cq(cq);
+
+error_2:
+ ib_dereg_mr(mr);
+
+error_1:
+ ib_dealloc_pd(pd);
+
+error_0:
+ kfree(attr);
+ kfree(init_attr);
+ return ret;
+}
+
+static int create_dev_resources(struct mlx5_ib_resources *devr)
+{
+ struct ib_srq_init_attr attr;
+ struct mlx5_ib_dev *dev;
+ int ret = 0;
+
+ dev = container_of(devr, struct mlx5_ib_dev, devr);
+
+ devr->p0 = mlx5_ib_alloc_pd(&dev->ib_dev, NULL, NULL);
+ if (IS_ERR(devr->p0)) {
+ ret = PTR_ERR(devr->p0);
+ goto error0;
+ }
+ devr->p0->device = &dev->ib_dev;
+ devr->p0->uobject = NULL;
+ atomic_set(&devr->p0->usecnt, 0);
+
+ devr->c0 = mlx5_ib_create_cq(&dev->ib_dev, 1, 0, NULL, NULL);
+ if (IS_ERR(devr->c0)) {
+ ret = PTR_ERR(devr->c0);
+ goto error1;
+ }
+ devr->c0->device = &dev->ib_dev;
+ devr->c0->uobject = NULL;
+ devr->c0->comp_handler = NULL;
+ devr->c0->event_handler = NULL;
+ devr->c0->cq_context = NULL;
+ atomic_set(&devr->c0->usecnt, 0);
+
+ devr->x0 = mlx5_ib_alloc_xrcd(&dev->ib_dev, NULL, NULL);
+ if (IS_ERR(devr->x0)) {
+ ret = PTR_ERR(devr->x0);
+ goto error2;
+ }
+ devr->x0->device = &dev->ib_dev;
+ devr->x0->inode = NULL;
+ atomic_set(&devr->x0->usecnt, 0);
+ mutex_init(&devr->x0->tgt_qp_mutex);
+ INIT_LIST_HEAD(&devr->x0->tgt_qp_list);
+
+ devr->x1 = mlx5_ib_alloc_xrcd(&dev->ib_dev, NULL, NULL);
+ if (IS_ERR(devr->x1)) {
+ ret = PTR_ERR(devr->x1);
+ goto error3;
+ }
+ devr->x1->device = &dev->ib_dev;
+ devr->x1->inode = NULL;
+ atomic_set(&devr->x1->usecnt, 0);
+ mutex_init(&devr->x1->tgt_qp_mutex);
+ INIT_LIST_HEAD(&devr->x1->tgt_qp_list);
+
+ memset(&attr, 0, sizeof(attr));
+ attr.attr.max_sge = 1;
+ attr.attr.max_wr = 1;
+ attr.srq_type = IB_SRQT_XRC;
+ attr.ext.xrc.cq = devr->c0;
+ attr.ext.xrc.xrcd = devr->x0;
+
+ devr->s0 = mlx5_ib_create_srq(devr->p0, &attr, NULL);
+ if (IS_ERR(devr->s0)) {
+ ret = PTR_ERR(devr->s0);
+ goto error4;
+ }
+ devr->s0->device = &dev->ib_dev;
+ devr->s0->pd = devr->p0;
+ devr->s0->uobject = NULL;
+ devr->s0->event_handler = NULL;
+ devr->s0->srq_context = NULL;
+ devr->s0->srq_type = IB_SRQT_XRC;
+ devr->s0->ext.xrc.xrcd = devr->x0;
+ devr->s0->ext.xrc.cq = devr->c0;
+ atomic_inc(&devr->s0->ext.xrc.xrcd->usecnt);
+ atomic_inc(&devr->s0->ext.xrc.cq->usecnt);
+ atomic_inc(&devr->p0->usecnt);
+ atomic_set(&devr->s0->usecnt, 0);
+
+ return 0;
+
+error4:
+ mlx5_ib_dealloc_xrcd(devr->x1);
+error3:
+ mlx5_ib_dealloc_xrcd(devr->x0);
+error2:
+ mlx5_ib_destroy_cq(devr->c0);
+error1:
+ mlx5_ib_dealloc_pd(devr->p0);
+error0:
+ return ret;
+}
+
+static void destroy_dev_resources(struct mlx5_ib_resources *devr)
+{
+ mlx5_ib_destroy_srq(devr->s0);
+ mlx5_ib_dealloc_xrcd(devr->x0);
+ mlx5_ib_dealloc_xrcd(devr->x1);
+ mlx5_ib_destroy_cq(devr->c0);
+ mlx5_ib_dealloc_pd(devr->p0);
+}
+
+static int init_one(struct pci_dev *pdev,
+ const struct pci_device_id *id)
+{
+ struct mlx5_core_dev *mdev;
+ struct mlx5_ib_dev *dev;
+ int err;
+ int i;
+
+ printk_once(KERN_INFO "%s", mlx5_version);
+
+ dev = (struct mlx5_ib_dev *)ib_alloc_device(sizeof(*dev));
+ if (!dev)
+ return -ENOMEM;
+
+ mdev = &dev->mdev;
+ mdev->event = mlx5_ib_event;
+ if (prof_sel >= ARRAY_SIZE(profile)) {
+ pr_warn("selected pofile out of range, selceting default\n");
+ prof_sel = 0;
+ }
+ mdev->profile = &profile[prof_sel];
+ err = mlx5_dev_init(mdev, pdev);
+ if (err)
+ goto err_free;
+
+ err = get_port_caps(dev);
+ if (err)
+ goto err_cleanup;
+
+ get_ext_port_caps(dev);
+
+ err = alloc_comp_eqs(dev);
+ if (err)
+ goto err_cleanup;
+
+ MLX5_INIT_DOORBELL_LOCK(&dev->uar_lock);
+
+ strlcpy(dev->ib_dev.name, "mlx5_%d", IB_DEVICE_NAME_MAX);
+ dev->ib_dev.owner = THIS_MODULE;
+ dev->ib_dev.node_type = RDMA_NODE_IB_CA;
+ dev->ib_dev.local_dma_lkey = mdev->caps.reserved_lkey;
+ dev->num_ports = mdev->caps.num_ports;
+ dev->ib_dev.phys_port_cnt = dev->num_ports;
+ dev->ib_dev.num_comp_vectors = dev->num_comp_vectors;
+ dev->ib_dev.dma_device = &mdev->pdev->dev;
+
+ dev->ib_dev.uverbs_abi_ver = MLX5_IB_UVERBS_ABI_VERSION;
+ dev->ib_dev.uverbs_cmd_mask =
+ (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
+ (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
+ (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
+ (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
+ (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
+ (1ull << IB_USER_VERBS_CMD_REG_MR) |
+ (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
+ (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
+ (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
+ (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) |
+ (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
+ (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
+ (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
+ (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
+ (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
+ (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
+ (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) |
+ (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
+ (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
+ (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) |
+ (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) |
+ (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) |
+ (1ull << IB_USER_VERBS_CMD_OPEN_QP);
+
+ dev->ib_dev.query_device = mlx5_ib_query_device;
+ dev->ib_dev.query_port = mlx5_ib_query_port;
+ dev->ib_dev.query_gid = mlx5_ib_query_gid;
+ dev->ib_dev.query_pkey = mlx5_ib_query_pkey;
+ dev->ib_dev.modify_device = mlx5_ib_modify_device;
+ dev->ib_dev.modify_port = mlx5_ib_modify_port;
+ dev->ib_dev.alloc_ucontext = mlx5_ib_alloc_ucontext;
+ dev->ib_dev.dealloc_ucontext = mlx5_ib_dealloc_ucontext;
+ dev->ib_dev.mmap = mlx5_ib_mmap;
+ dev->ib_dev.alloc_pd = mlx5_ib_alloc_pd;
+ dev->ib_dev.dealloc_pd = mlx5_ib_dealloc_pd;
+ dev->ib_dev.create_ah = mlx5_ib_create_ah;
+ dev->ib_dev.query_ah = mlx5_ib_query_ah;
+ dev->ib_dev.destroy_ah = mlx5_ib_destroy_ah;
+ dev->ib_dev.create_srq = mlx5_ib_create_srq;
+ dev->ib_dev.modify_srq = mlx5_ib_modify_srq;
+ dev->ib_dev.query_srq = mlx5_ib_query_srq;
+ dev->ib_dev.destroy_srq = mlx5_ib_destroy_srq;
+ dev->ib_dev.post_srq_recv = mlx5_ib_post_srq_recv;
+ dev->ib_dev.create_qp = mlx5_ib_create_qp;
+ dev->ib_dev.modify_qp = mlx5_ib_modify_qp;
+ dev->ib_dev.query_qp = mlx5_ib_query_qp;
+ dev->ib_dev.destroy_qp = mlx5_ib_destroy_qp;
+ dev->ib_dev.post_send = mlx5_ib_post_send;
+ dev->ib_dev.post_recv = mlx5_ib_post_recv;
+ dev->ib_dev.create_cq = mlx5_ib_create_cq;
+ dev->ib_dev.modify_cq = mlx5_ib_modify_cq;
+ dev->ib_dev.resize_cq = mlx5_ib_resize_cq;
+ dev->ib_dev.destroy_cq = mlx5_ib_destroy_cq;
+ dev->ib_dev.poll_cq = mlx5_ib_poll_cq;
+ dev->ib_dev.req_notify_cq = mlx5_ib_arm_cq;
+ dev->ib_dev.get_dma_mr = mlx5_ib_get_dma_mr;
+ dev->ib_dev.reg_user_mr = mlx5_ib_reg_user_mr;
+ dev->ib_dev.dereg_mr = mlx5_ib_dereg_mr;
+ dev->ib_dev.attach_mcast = mlx5_ib_mcg_attach;
+ dev->ib_dev.detach_mcast = mlx5_ib_mcg_detach;
+ dev->ib_dev.process_mad = mlx5_ib_process_mad;
+ dev->ib_dev.alloc_fast_reg_mr = mlx5_ib_alloc_fast_reg_mr;
+ dev->ib_dev.alloc_fast_reg_page_list = mlx5_ib_alloc_fast_reg_page_list;
+ dev->ib_dev.free_fast_reg_page_list = mlx5_ib_free_fast_reg_page_list;
+
+ if (mdev->caps.flags & MLX5_DEV_CAP_FLAG_XRC) {
+ dev->ib_dev.alloc_xrcd = mlx5_ib_alloc_xrcd;
+ dev->ib_dev.dealloc_xrcd = mlx5_ib_dealloc_xrcd;
+ dev->ib_dev.uverbs_cmd_mask |=
+ (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) |
+ (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD);
+ }
+
+ err = init_node_data(dev);
+ if (err)
+ goto err_eqs;
+
+ mutex_init(&dev->cap_mask_mutex);
+ spin_lock_init(&dev->mr_lock);
+
+ err = create_dev_resources(&dev->devr);
+ if (err)
+ goto err_eqs;
+
+ if (ib_register_device(&dev->ib_dev, NULL))
+ goto err_rsrc;
+
+ err = create_umr_res(dev);
+ if (err)
+ goto err_dev;
+
+ for (i = 0; i < ARRAY_SIZE(mlx5_class_attributes); i++) {
+ if (device_create_file(&dev->ib_dev.dev,
+ mlx5_class_attributes[i]))
+ goto err_umrc;
+ }
+
+ dev->ib_active = true;
+
+ return 0;
+
+err_umrc:
+ destroy_umrc_res(dev);
+
+err_dev:
+ ib_unregister_device(&dev->ib_dev);
+
+err_rsrc:
+ destroy_dev_resources(&dev->devr);
+
+err_eqs:
+ free_comp_eqs(dev);
+
+err_cleanup:
+ mlx5_dev_cleanup(mdev);
+
+err_free:
+ ib_dealloc_device((struct ib_device *)dev);
+
+ return err;
+}
+
+static void remove_one(struct pci_dev *pdev)
+{
+ struct mlx5_ib_dev *dev = mlx5_pci2ibdev(pdev);
+
+ destroy_umrc_res(dev);
+ ib_unregister_device(&dev->ib_dev);
+ destroy_dev_resources(&dev->devr);
+ free_comp_eqs(dev);
+ mlx5_dev_cleanup(&dev->mdev);
+ ib_dealloc_device(&dev->ib_dev);
+}
+
+static DEFINE_PCI_DEVICE_TABLE(mlx5_ib_pci_table) = {
+ { PCI_VDEVICE(MELLANOX, 4113) }, /* MT4113 Connect-IB */
+ { 0, }
+};
+
+MODULE_DEVICE_TABLE(pci, mlx5_ib_pci_table);
+
+static struct pci_driver mlx5_ib_driver = {
+ .name = DRIVER_NAME,
+ .id_table = mlx5_ib_pci_table,
+ .probe = init_one,
+ .remove = remove_one
+};
+
+static int __init mlx5_ib_init(void)
+{
+ return pci_register_driver(&mlx5_ib_driver);
+}
+
+static void __exit mlx5_ib_cleanup(void)
+{
+ pci_unregister_driver(&mlx5_ib_driver);
+}
+
+module_init(mlx5_ib_init);
+module_exit(mlx5_ib_cleanup);
diff --git a/drivers/infiniband/hw/mlx5/mem.c b/drivers/infiniband/hw/mlx5/mem.c
new file mode 100644
index 00000000000..3a5322870b9
--- /dev/null
+++ b/drivers/infiniband/hw/mlx5/mem.c
@@ -0,0 +1,162 @@
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/module.h>
+#include <rdma/ib_umem.h>
+#include "mlx5_ib.h"
+
+/* @umem: umem object to scan
+ * @addr: ib virtual address requested by the user
+ * @count: number of PAGE_SIZE pages covered by umem
+ * @shift: page shift for the compound pages found in the region
+ * @ncont: number of compund pages
+ * @order: log2 of the number of compound pages
+ */
+void mlx5_ib_cont_pages(struct ib_umem *umem, u64 addr, int *count, int *shift,
+ int *ncont, int *order)
+{
+ struct ib_umem_chunk *chunk;
+ unsigned long tmp;
+ unsigned long m;
+ int i, j, k;
+ u64 base = 0;
+ int p = 0;
+ int skip;
+ int mask;
+ u64 len;
+ u64 pfn;
+
+ addr = addr >> PAGE_SHIFT;
+ tmp = (unsigned long)addr;
+ m = find_first_bit(&tmp, sizeof(tmp));
+ skip = 1 << m;
+ mask = skip - 1;
+ i = 0;
+ list_for_each_entry(chunk, &umem->chunk_list, list)
+ for (j = 0; j < chunk->nmap; j++) {
+ len = sg_dma_len(&chunk->page_list[j]) >> PAGE_SHIFT;
+ pfn = sg_dma_address(&chunk->page_list[j]) >> PAGE_SHIFT;
+ for (k = 0; k < len; k++) {
+ if (!(i & mask)) {
+ tmp = (unsigned long)pfn;
+ m = min(m, find_first_bit(&tmp, sizeof(tmp)));
+ skip = 1 << m;
+ mask = skip - 1;
+ base = pfn;
+ p = 0;
+ } else {
+ if (base + p != pfn) {
+ tmp = (unsigned long)p;
+ m = find_first_bit(&tmp, sizeof(tmp));
+ skip = 1 << m;
+ mask = skip - 1;
+ base = pfn;
+ p = 0;
+ }
+ }
+ p++;
+ i++;
+ }
+ }
+
+ if (i) {
+ m = min_t(unsigned long, ilog2(roundup_pow_of_two(i)), m);
+
+ if (order)
+ *order = ilog2(roundup_pow_of_two(i) >> m);
+
+ *ncont = DIV_ROUND_UP(i, (1 << m));
+ } else {
+ m = 0;
+
+ if (order)
+ *order = 0;
+
+ *ncont = 0;
+ }
+ *shift = PAGE_SHIFT + m;
+ *count = i;
+}
+
+void mlx5_ib_populate_pas(struct mlx5_ib_dev *dev, struct ib_umem *umem,
+ int page_shift, __be64 *pas, int umr)
+{
+ int shift = page_shift - PAGE_SHIFT;
+ int mask = (1 << shift) - 1;
+ struct ib_umem_chunk *chunk;
+ int i, j, k;
+ u64 cur = 0;
+ u64 base;
+ int len;
+
+ i = 0;
+ list_for_each_entry(chunk, &umem->chunk_list, list)
+ for (j = 0; j < chunk->nmap; j++) {
+ len = sg_dma_len(&chunk->page_list[j]) >> PAGE_SHIFT;
+ base = sg_dma_address(&chunk->page_list[j]);
+ for (k = 0; k < len; k++) {
+ if (!(i & mask)) {
+ cur = base + (k << PAGE_SHIFT);
+ if (umr)
+ cur |= 3;
+
+ pas[i >> shift] = cpu_to_be64(cur);
+ mlx5_ib_dbg(dev, "pas[%d] 0x%llx\n",
+ i >> shift, be64_to_cpu(pas[i >> shift]));
+ } else
+ mlx5_ib_dbg(dev, "=====> 0x%llx\n",
+ base + (k << PAGE_SHIFT));
+ i++;
+ }
+ }
+}
+
+int mlx5_ib_get_buf_offset(u64 addr, int page_shift, u32 *offset)
+{
+ u64 page_size;
+ u64 page_mask;
+ u64 off_size;
+ u64 off_mask;
+ u64 buf_off;
+
+ page_size = 1 << page_shift;
+ page_mask = page_size - 1;
+ buf_off = addr & page_mask;
+ off_size = page_size >> 6;
+ off_mask = off_size - 1;
+
+ if (buf_off & off_mask)
+ return -EINVAL;
+
+ *offset = buf_off >> ilog2(off_size);
+ return 0;
+}
diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h
new file mode 100644
index 00000000000..836be915724
--- /dev/null
+++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h
@@ -0,0 +1,545 @@
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef MLX5_IB_H
+#define MLX5_IB_H
+
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <rdma/ib_verbs.h>
+#include <rdma/ib_smi.h>
+#include <linux/mlx5/driver.h>
+#include <linux/mlx5/cq.h>
+#include <linux/mlx5/qp.h>
+#include <linux/mlx5/srq.h>
+#include <linux/types.h>
+
+#define mlx5_ib_dbg(dev, format, arg...) \
+pr_debug("%s:%s:%d:(pid %d): " format, (dev)->ib_dev.name, __func__, \
+ __LINE__, current->pid, ##arg)
+
+#define mlx5_ib_err(dev, format, arg...) \
+pr_err("%s:%s:%d:(pid %d): " format, (dev)->ib_dev.name, __func__, \
+ __LINE__, current->pid, ##arg)
+
+#define mlx5_ib_warn(dev, format, arg...) \
+pr_warn("%s:%s:%d:(pid %d): " format, (dev)->ib_dev.name, __func__, \
+ __LINE__, current->pid, ##arg)
+
+enum {
+ MLX5_IB_MMAP_CMD_SHIFT = 8,
+ MLX5_IB_MMAP_CMD_MASK = 0xff,
+};
+
+enum mlx5_ib_mmap_cmd {
+ MLX5_IB_MMAP_REGULAR_PAGE = 0,
+ MLX5_IB_MMAP_GET_CONTIGUOUS_PAGES = 1, /* always last */
+};
+
+enum {
+ MLX5_RES_SCAT_DATA32_CQE = 0x1,
+ MLX5_RES_SCAT_DATA64_CQE = 0x2,
+ MLX5_REQ_SCAT_DATA32_CQE = 0x11,
+ MLX5_REQ_SCAT_DATA64_CQE = 0x22,
+};
+
+enum mlx5_ib_latency_class {
+ MLX5_IB_LATENCY_CLASS_LOW,
+ MLX5_IB_LATENCY_CLASS_MEDIUM,
+ MLX5_IB_LATENCY_CLASS_HIGH,
+ MLX5_IB_LATENCY_CLASS_FAST_PATH
+};
+
+enum mlx5_ib_mad_ifc_flags {
+ MLX5_MAD_IFC_IGNORE_MKEY = 1,
+ MLX5_MAD_IFC_IGNORE_BKEY = 2,
+ MLX5_MAD_IFC_NET_VIEW = 4,
+};
+
+struct mlx5_ib_ucontext {
+ struct ib_ucontext ibucontext;
+ struct list_head db_page_list;
+
+ /* protect doorbell record alloc/free
+ */
+ struct mutex db_page_mutex;
+ struct mlx5_uuar_info uuari;
+};
+
+static inline struct mlx5_ib_ucontext *to_mucontext(struct ib_ucontext *ibucontext)
+{
+ return container_of(ibucontext, struct mlx5_ib_ucontext, ibucontext);
+}
+
+struct mlx5_ib_pd {
+ struct ib_pd ibpd;
+ u32 pdn;
+ u32 pa_lkey;
+};
+
+/* Use macros here so that don't have to duplicate
+ * enum ib_send_flags and enum ib_qp_type for low-level driver
+ */
+
+#define MLX5_IB_SEND_UMR_UNREG IB_SEND_RESERVED_START
+#define MLX5_IB_QPT_REG_UMR IB_QPT_RESERVED1
+#define MLX5_IB_WR_UMR IB_WR_RESERVED1
+
+struct wr_list {
+ u16 opcode;
+ u16 next;
+};
+
+struct mlx5_ib_wq {
+ u64 *wrid;
+ u32 *wr_data;
+ struct wr_list *w_list;
+ unsigned *wqe_head;
+ u16 unsig_count;
+
+ /* serialize post to the work queue
+ */
+ spinlock_t lock;
+ int wqe_cnt;
+ int max_post;
+ int max_gs;
+ int offset;
+ int wqe_shift;
+ unsigned head;
+ unsigned tail;
+ u16 cur_post;
+ u16 last_poll;
+ void *qend;
+};
+
+enum {
+ MLX5_QP_USER,
+ MLX5_QP_KERNEL,
+ MLX5_QP_EMPTY
+};
+
+struct mlx5_ib_qp {
+ struct ib_qp ibqp;
+ struct mlx5_core_qp mqp;
+ struct mlx5_buf buf;
+
+ struct mlx5_db db;
+ struct mlx5_ib_wq rq;
+
+ u32 doorbell_qpn;
+ u8 sq_signal_bits;
+ u8 fm_cache;
+ int sq_max_wqes_per_wr;
+ int sq_spare_wqes;
+ struct mlx5_ib_wq sq;
+
+ struct ib_umem *umem;
+ int buf_size;
+
+ /* serialize qp state modifications
+ */
+ struct mutex mutex;
+ u16 xrcdn;
+ u32 flags;
+ u8 port;
+ u8 alt_port;
+ u8 atomic_rd_en;
+ u8 resp_depth;
+ u8 state;
+ int mlx_type;
+ int wq_sig;
+ int scat_cqe;
+ int max_inline_data;
+ struct mlx5_bf *bf;
+ int has_rq;
+
+ /* only for user space QPs. For kernel
+ * we have it from the bf object
+ */
+ int uuarn;
+
+ int create_type;
+ u32 pa_lkey;
+};
+
+struct mlx5_ib_cq_buf {
+ struct mlx5_buf buf;
+ struct ib_umem *umem;
+ int cqe_size;
+};
+
+enum mlx5_ib_qp_flags {
+ MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK = 1 << 0,
+ MLX5_IB_QP_SIGNATURE_HANDLING = 1 << 1,
+};
+
+struct mlx5_shared_mr_info {
+ int mr_id;
+ struct ib_umem *umem;
+};
+
+struct mlx5_ib_cq {
+ struct ib_cq ibcq;
+ struct mlx5_core_cq mcq;
+ struct mlx5_ib_cq_buf buf;
+ struct mlx5_db db;
+
+ /* serialize access to the CQ
+ */
+ spinlock_t lock;
+
+ /* protect resize cq
+ */
+ struct mutex resize_mutex;
+ struct mlx5_ib_cq_resize *resize_buf;
+ struct ib_umem *resize_umem;
+ int cqe_size;
+};
+
+struct mlx5_ib_srq {
+ struct ib_srq ibsrq;
+ struct mlx5_core_srq msrq;
+ struct mlx5_buf buf;
+ struct mlx5_db db;
+ u64 *wrid;
+ /* protect SRQ hanlding
+ */
+ spinlock_t lock;
+ int head;
+ int tail;
+ u16 wqe_ctr;
+ struct ib_umem *umem;
+ /* serialize arming a SRQ
+ */
+ struct mutex mutex;
+ int wq_sig;
+};
+
+struct mlx5_ib_xrcd {
+ struct ib_xrcd ibxrcd;
+ u32 xrcdn;
+};
+
+struct mlx5_ib_mr {
+ struct ib_mr ibmr;
+ struct mlx5_core_mr mmr;
+ struct ib_umem *umem;
+ struct mlx5_shared_mr_info *smr_info;
+ struct list_head list;
+ int order;
+ int umred;
+ __be64 *pas;
+ dma_addr_t dma;
+ int npages;
+ struct completion done;
+ enum ib_wc_status status;
+};
+
+struct mlx5_ib_fast_reg_page_list {
+ struct ib_fast_reg_page_list ibfrpl;
+ __be64 *mapped_page_list;
+ dma_addr_t map;
+};
+
+struct umr_common {
+ struct ib_pd *pd;
+ struct ib_cq *cq;
+ struct ib_qp *qp;
+ struct ib_mr *mr;
+ /* control access to UMR QP
+ */
+ struct semaphore sem;
+};
+
+enum {
+ MLX5_FMR_INVALID,
+ MLX5_FMR_VALID,
+ MLX5_FMR_BUSY,
+};
+
+struct mlx5_ib_fmr {
+ struct ib_fmr ibfmr;
+ struct mlx5_core_mr mr;
+ int access_flags;
+ int state;
+ /* protect fmr state
+ */
+ spinlock_t lock;
+ u64 wrid;
+ struct ib_send_wr wr[2];
+ u8 page_shift;
+ struct ib_fast_reg_page_list page_list;
+};
+
+struct mlx5_cache_ent {
+ struct list_head head;
+ /* sync access to the cahce entry
+ */
+ spinlock_t lock;
+
+
+ struct dentry *dir;
+ char name[4];
+ u32 order;
+ u32 size;
+ u32 cur;
+ u32 miss;
+ u32 limit;
+
+ struct dentry *fsize;
+ struct dentry *fcur;
+ struct dentry *fmiss;
+ struct dentry *flimit;
+
+ struct mlx5_ib_dev *dev;
+ struct work_struct work;
+ struct delayed_work dwork;
+};
+
+struct mlx5_mr_cache {
+ struct workqueue_struct *wq;
+ struct mlx5_cache_ent ent[MAX_MR_CACHE_ENTRIES];
+ int stopped;
+ struct dentry *root;
+ unsigned long last_add;
+};
+
+struct mlx5_ib_resources {
+ struct ib_cq *c0;
+ struct ib_xrcd *x0;
+ struct ib_xrcd *x1;
+ struct ib_pd *p0;
+ struct ib_srq *s0;
+};
+
+struct mlx5_ib_dev {
+ struct ib_device ib_dev;
+ struct mlx5_core_dev mdev;
+ MLX5_DECLARE_DOORBELL_LOCK(uar_lock);
+ struct list_head eqs_list;
+ int num_ports;
+ int num_comp_vectors;
+ /* serialize update of capability mask
+ */
+ struct mutex cap_mask_mutex;
+ bool ib_active;
+ struct umr_common umrc;
+ /* sync used page count stats
+ */
+ spinlock_t mr_lock;
+ struct mlx5_ib_resources devr;
+ struct mlx5_mr_cache cache;
+};
+
+static inline struct mlx5_ib_cq *to_mibcq(struct mlx5_core_cq *mcq)
+{
+ return container_of(mcq, struct mlx5_ib_cq, mcq);
+}
+
+static inline struct mlx5_ib_xrcd *to_mxrcd(struct ib_xrcd *ibxrcd)
+{
+ return container_of(ibxrcd, struct mlx5_ib_xrcd, ibxrcd);
+}
+
+static inline struct mlx5_ib_dev *to_mdev(struct ib_device *ibdev)
+{
+ return container_of(ibdev, struct mlx5_ib_dev, ib_dev);
+}
+
+static inline struct mlx5_ib_fmr *to_mfmr(struct ib_fmr *ibfmr)
+{
+ return container_of(ibfmr, struct mlx5_ib_fmr, ibfmr);
+}
+
+static inline struct mlx5_ib_cq *to_mcq(struct ib_cq *ibcq)
+{
+ return container_of(ibcq, struct mlx5_ib_cq, ibcq);
+}
+
+static inline struct mlx5_ib_qp *to_mibqp(struct mlx5_core_qp *mqp)
+{
+ return container_of(mqp, struct mlx5_ib_qp, mqp);
+}
+
+static inline struct mlx5_ib_pd *to_mpd(struct ib_pd *ibpd)
+{
+ return container_of(ibpd, struct mlx5_ib_pd, ibpd);
+}
+
+static inline struct mlx5_ib_srq *to_msrq(struct ib_srq *ibsrq)
+{
+ return container_of(ibsrq, struct mlx5_ib_srq, ibsrq);
+}
+
+static inline struct mlx5_ib_qp *to_mqp(struct ib_qp *ibqp)
+{
+ return container_of(ibqp, struct mlx5_ib_qp, ibqp);
+}
+
+static inline struct mlx5_ib_srq *to_mibsrq(struct mlx5_core_srq *msrq)
+{
+ return container_of(msrq, struct mlx5_ib_srq, msrq);
+}
+
+static inline struct mlx5_ib_mr *to_mmr(struct ib_mr *ibmr)
+{
+ return container_of(ibmr, struct mlx5_ib_mr, ibmr);
+}
+
+static inline struct mlx5_ib_fast_reg_page_list *to_mfrpl(struct ib_fast_reg_page_list *ibfrpl)
+{
+ return container_of(ibfrpl, struct mlx5_ib_fast_reg_page_list, ibfrpl);
+}
+
+struct mlx5_ib_ah {
+ struct ib_ah ibah;
+ struct mlx5_av av;
+};
+
+static inline struct mlx5_ib_ah *to_mah(struct ib_ah *ibah)
+{
+ return container_of(ibah, struct mlx5_ib_ah, ibah);
+}
+
+static inline struct mlx5_ib_dev *mlx5_core2ibdev(struct mlx5_core_dev *dev)
+{
+ return container_of(dev, struct mlx5_ib_dev, mdev);
+}
+
+static inline struct mlx5_ib_dev *mlx5_pci2ibdev(struct pci_dev *pdev)
+{
+ return mlx5_core2ibdev(pci2mlx5_core_dev(pdev));
+}
+
+int mlx5_ib_db_map_user(struct mlx5_ib_ucontext *context, unsigned long virt,
+ struct mlx5_db *db);
+void mlx5_ib_db_unmap_user(struct mlx5_ib_ucontext *context, struct mlx5_db *db);
+void __mlx5_ib_cq_clean(struct mlx5_ib_cq *cq, u32 qpn, struct mlx5_ib_srq *srq);
+void mlx5_ib_cq_clean(struct mlx5_ib_cq *cq, u32 qpn, struct mlx5_ib_srq *srq);
+void mlx5_ib_free_srq_wqe(struct mlx5_ib_srq *srq, int wqe_index);
+int mlx5_MAD_IFC(struct mlx5_ib_dev *dev, int ignore_mkey, int ignore_bkey,
+ int port, struct ib_wc *in_wc, struct ib_grh *in_grh,
+ void *in_mad, void *response_mad);
+struct ib_ah *create_ib_ah(struct ib_ah_attr *ah_attr,
+ struct mlx5_ib_ah *ah);
+struct ib_ah *mlx5_ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
+int mlx5_ib_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr);
+int mlx5_ib_destroy_ah(struct ib_ah *ah);
+struct ib_srq *mlx5_ib_create_srq(struct ib_pd *pd,
+ struct ib_srq_init_attr *init_attr,
+ struct ib_udata *udata);
+int mlx5_ib_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
+ enum ib_srq_attr_mask attr_mask, struct ib_udata *udata);
+int mlx5_ib_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *srq_attr);
+int mlx5_ib_destroy_srq(struct ib_srq *srq);
+int mlx5_ib_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
+ struct ib_recv_wr **bad_wr);
+struct ib_qp *mlx5_ib_create_qp(struct ib_pd *pd,
+ struct ib_qp_init_attr *init_attr,
+ struct ib_udata *udata);
+int mlx5_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
+ int attr_mask, struct ib_udata *udata);
+int mlx5_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask,
+ struct ib_qp_init_attr *qp_init_attr);
+int mlx5_ib_destroy_qp(struct ib_qp *qp);
+int mlx5_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
+ struct ib_send_wr **bad_wr);
+int mlx5_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
+ struct ib_recv_wr **bad_wr);
+void *mlx5_get_send_wqe(struct mlx5_ib_qp *qp, int n);
+struct ib_cq *mlx5_ib_create_cq(struct ib_device *ibdev, int entries,
+ int vector, struct ib_ucontext *context,
+ struct ib_udata *udata);
+int mlx5_ib_destroy_cq(struct ib_cq *cq);
+int mlx5_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc);
+int mlx5_ib_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags);
+int mlx5_ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period);
+int mlx5_ib_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata);
+struct ib_mr *mlx5_ib_get_dma_mr(struct ib_pd *pd, int acc);
+struct ib_mr *mlx5_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
+ u64 virt_addr, int access_flags,
+ struct ib_udata *udata);
+int mlx5_ib_dereg_mr(struct ib_mr *ibmr);
+struct ib_mr *mlx5_ib_alloc_fast_reg_mr(struct ib_pd *pd,
+ int max_page_list_len);
+struct ib_fast_reg_page_list *mlx5_ib_alloc_fast_reg_page_list(struct ib_device *ibdev,
+ int page_list_len);
+void mlx5_ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list);
+struct ib_fmr *mlx5_ib_fmr_alloc(struct ib_pd *pd, int acc,
+ struct ib_fmr_attr *fmr_attr);
+int mlx5_ib_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list,
+ int npages, u64 iova);
+int mlx5_ib_unmap_fmr(struct list_head *fmr_list);
+int mlx5_ib_fmr_dealloc(struct ib_fmr *ibfmr);
+int mlx5_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
+ struct ib_wc *in_wc, struct ib_grh *in_grh,
+ struct ib_mad *in_mad, struct ib_mad *out_mad);
+struct ib_xrcd *mlx5_ib_alloc_xrcd(struct ib_device *ibdev,
+ struct ib_ucontext *context,
+ struct ib_udata *udata);
+int mlx5_ib_dealloc_xrcd(struct ib_xrcd *xrcd);
+int mlx5_vector2eqn(struct mlx5_ib_dev *dev, int vector, int *eqn, int *irqn);
+int mlx5_ib_get_buf_offset(u64 addr, int page_shift, u32 *offset);
+int mlx5_query_ext_port_caps(struct mlx5_ib_dev *dev, u8 port);
+int mlx5_ib_query_port(struct ib_device *ibdev, u8 port,
+ struct ib_port_attr *props);
+int mlx5_ib_init_fmr(struct mlx5_ib_dev *dev);
+void mlx5_ib_cleanup_fmr(struct mlx5_ib_dev *dev);
+void mlx5_ib_cont_pages(struct ib_umem *umem, u64 addr, int *count, int *shift,
+ int *ncont, int *order);
+void mlx5_ib_populate_pas(struct mlx5_ib_dev *dev, struct ib_umem *umem,
+ int page_shift, __be64 *pas, int umr);
+void mlx5_ib_copy_pas(u64 *old, u64 *new, int step, int num);
+int mlx5_ib_get_cqe_size(struct mlx5_ib_dev *dev, struct ib_cq *ibcq);
+int mlx5_mr_cache_init(struct mlx5_ib_dev *dev);
+int mlx5_mr_cache_cleanup(struct mlx5_ib_dev *dev);
+int mlx5_mr_ib_cont_pages(struct ib_umem *umem, u64 addr, int *count, int *shift);
+void mlx5_umr_cq_handler(struct ib_cq *cq, void *cq_context);
+
+static inline void init_query_mad(struct ib_smp *mad)
+{
+ mad->base_version = 1;
+ mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
+ mad->class_version = 1;
+ mad->method = IB_MGMT_METHOD_GET;
+}
+
+static inline u8 convert_access(int acc)
+{
+ return (acc & IB_ACCESS_REMOTE_ATOMIC ? MLX5_PERM_ATOMIC : 0) |
+ (acc & IB_ACCESS_REMOTE_WRITE ? MLX5_PERM_REMOTE_WRITE : 0) |
+ (acc & IB_ACCESS_REMOTE_READ ? MLX5_PERM_REMOTE_READ : 0) |
+ (acc & IB_ACCESS_LOCAL_WRITE ? MLX5_PERM_LOCAL_WRITE : 0) |
+ MLX5_PERM_LOCAL_READ;
+}
+
+#endif /* MLX5_IB_H */
diff --git a/drivers/infiniband/hw/mlx5/mr.c b/drivers/infiniband/hw/mlx5/mr.c
new file mode 100644
index 00000000000..bd41df95b6f
--- /dev/null
+++ b/drivers/infiniband/hw/mlx5/mr.c
@@ -0,0 +1,1007 @@
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+
+#include <linux/kref.h>
+#include <linux/random.h>
+#include <linux/debugfs.h>
+#include <linux/export.h>
+#include <rdma/ib_umem.h>
+#include "mlx5_ib.h"
+
+enum {
+ DEF_CACHE_SIZE = 10,
+};
+
+static __be64 *mr_align(__be64 *ptr, int align)
+{
+ unsigned long mask = align - 1;
+
+ return (__be64 *)(((unsigned long)ptr + mask) & ~mask);
+}
+
+static int order2idx(struct mlx5_ib_dev *dev, int order)
+{
+ struct mlx5_mr_cache *cache = &dev->cache;
+
+ if (order < cache->ent[0].order)
+ return 0;
+ else
+ return order - cache->ent[0].order;
+}
+
+static int add_keys(struct mlx5_ib_dev *dev, int c, int num)
+{
+ struct device *ddev = dev->ib_dev.dma_device;
+ struct mlx5_mr_cache *cache = &dev->cache;
+ struct mlx5_cache_ent *ent = &cache->ent[c];
+ struct mlx5_create_mkey_mbox_in *in;
+ struct mlx5_ib_mr *mr;
+ int npages = 1 << ent->order;
+ int size = sizeof(u64) * npages;
+ int err = 0;
+ int i;
+
+ in = kzalloc(sizeof(*in), GFP_KERNEL);
+ if (!in)
+ return -ENOMEM;
+
+ for (i = 0; i < num; i++) {
+ mr = kzalloc(sizeof(*mr), GFP_KERNEL);
+ if (!mr) {
+ err = -ENOMEM;
+ goto out;
+ }
+ mr->order = ent->order;
+ mr->umred = 1;
+ mr->pas = kmalloc(size + 0x3f, GFP_KERNEL);
+ if (!mr->pas) {
+ kfree(mr);
+ err = -ENOMEM;
+ goto out;
+ }
+ mr->dma = dma_map_single(ddev, mr_align(mr->pas, 0x40), size,
+ DMA_TO_DEVICE);
+ if (dma_mapping_error(ddev, mr->dma)) {
+ kfree(mr->pas);
+ kfree(mr);
+ err = -ENOMEM;
+ goto out;
+ }
+
+ in->seg.status = 1 << 6;
+ in->seg.xlt_oct_size = cpu_to_be32((npages + 1) / 2);
+ in->seg.qpn_mkey7_0 = cpu_to_be32(0xffffff << 8);
+ in->seg.flags = MLX5_ACCESS_MODE_MTT | MLX5_PERM_UMR_EN;
+ in->seg.log2_page_size = 12;
+
+ err = mlx5_core_create_mkey(&dev->mdev, &mr->mmr, in,
+ sizeof(*in));
+ if (err) {
+ mlx5_ib_warn(dev, "create mkey failed %d\n", err);
+ dma_unmap_single(ddev, mr->dma, size, DMA_TO_DEVICE);
+ kfree(mr->pas);
+ kfree(mr);
+ goto out;
+ }
+ cache->last_add = jiffies;
+
+ spin_lock(&ent->lock);
+ list_add_tail(&mr->list, &ent->head);
+ ent->cur++;
+ ent->size++;
+ spin_unlock(&ent->lock);
+ }
+
+out:
+ kfree(in);
+ return err;
+}
+
+static void remove_keys(struct mlx5_ib_dev *dev, int c, int num)
+{
+ struct device *ddev = dev->ib_dev.dma_device;
+ struct mlx5_mr_cache *cache = &dev->cache;
+ struct mlx5_cache_ent *ent = &cache->ent[c];
+ struct mlx5_ib_mr *mr;
+ int size;
+ int err;
+ int i;
+
+ for (i = 0; i < num; i++) {
+ spin_lock(&ent->lock);
+ if (list_empty(&ent->head)) {
+ spin_unlock(&ent->lock);
+ return;
+ }
+ mr = list_first_entry(&ent->head, struct mlx5_ib_mr, list);
+ list_del(&mr->list);
+ ent->cur--;
+ ent->size--;
+ spin_unlock(&ent->lock);
+ err = mlx5_core_destroy_mkey(&dev->mdev, &mr->mmr);
+ if (err) {
+ mlx5_ib_warn(dev, "failed destroy mkey\n");
+ } else {
+ size = ALIGN(sizeof(u64) * (1 << mr->order), 0x40);
+ dma_unmap_single(ddev, mr->dma, size, DMA_TO_DEVICE);
+ kfree(mr->pas);
+ kfree(mr);
+ }
+ }
+}
+
+static ssize_t size_write(struct file *filp, const char __user *buf,
+ size_t count, loff_t *pos)
+{
+ struct mlx5_cache_ent *ent = filp->private_data;
+ struct mlx5_ib_dev *dev = ent->dev;
+ char lbuf[20];
+ u32 var;
+ int err;
+ int c;
+
+ if (copy_from_user(lbuf, buf, sizeof(lbuf)))
+ return -EFAULT;
+
+ c = order2idx(dev, ent->order);
+ lbuf[sizeof(lbuf) - 1] = 0;
+
+ if (sscanf(lbuf, "%u", &var) != 1)
+ return -EINVAL;
+
+ if (var < ent->limit)
+ return -EINVAL;
+
+ if (var > ent->size) {
+ err = add_keys(dev, c, var - ent->size);
+ if (err)
+ return err;
+ } else if (var < ent->size) {
+ remove_keys(dev, c, ent->size - var);
+ }
+
+ return count;
+}
+
+static ssize_t size_read(struct file *filp, char __user *buf, size_t count,
+ loff_t *pos)
+{
+ struct mlx5_cache_ent *ent = filp->private_data;
+ char lbuf[20];
+ int err;
+
+ if (*pos)
+ return 0;
+
+ err = snprintf(lbuf, sizeof(lbuf), "%d\n", ent->size);
+ if (err < 0)
+ return err;
+
+ if (copy_to_user(buf, lbuf, err))
+ return -EFAULT;
+
+ *pos += err;
+
+ return err;
+}
+
+static const struct file_operations size_fops = {
+ .owner = THIS_MODULE,
+ .open = simple_open,
+ .write = size_write,
+ .read = size_read,
+};
+
+static ssize_t limit_write(struct file *filp, const char __user *buf,
+ size_t count, loff_t *pos)
+{
+ struct mlx5_cache_ent *ent = filp->private_data;
+ struct mlx5_ib_dev *dev = ent->dev;
+ char lbuf[20];
+ u32 var;
+ int err;
+ int c;
+
+ if (copy_from_user(lbuf, buf, sizeof(lbuf)))
+ return -EFAULT;
+
+ c = order2idx(dev, ent->order);
+ lbuf[sizeof(lbuf) - 1] = 0;
+
+ if (sscanf(lbuf, "%u", &var) != 1)
+ return -EINVAL;
+
+ if (var > ent->size)
+ return -EINVAL;
+
+ ent->limit = var;
+
+ if (ent->cur < ent->limit) {
+ err = add_keys(dev, c, 2 * ent->limit - ent->cur);
+ if (err)
+ return err;
+ }
+
+ return count;
+}
+
+static ssize_t limit_read(struct file *filp, char __user *buf, size_t count,
+ loff_t *pos)
+{
+ struct mlx5_cache_ent *ent = filp->private_data;
+ char lbuf[20];
+ int err;
+
+ if (*pos)
+ return 0;
+
+ err = snprintf(lbuf, sizeof(lbuf), "%d\n", ent->limit);
+ if (err < 0)
+ return err;
+
+ if (copy_to_user(buf, lbuf, err))
+ return -EFAULT;
+
+ *pos += err;
+
+ return err;
+}
+
+static const struct file_operations limit_fops = {
+ .owner = THIS_MODULE,
+ .open = simple_open,
+ .write = limit_write,
+ .read = limit_read,
+};
+
+static int someone_adding(struct mlx5_mr_cache *cache)
+{
+ int i;
+
+ for (i = 0; i < MAX_MR_CACHE_ENTRIES; i++) {
+ if (cache->ent[i].cur < cache->ent[i].limit)
+ return 1;
+ }
+
+ return 0;
+}
+
+static void __cache_work_func(struct mlx5_cache_ent *ent)
+{
+ struct mlx5_ib_dev *dev = ent->dev;
+ struct mlx5_mr_cache *cache = &dev->cache;
+ int i = order2idx(dev, ent->order);
+
+ if (cache->stopped)
+ return;
+
+ ent = &dev->cache.ent[i];
+ if (ent->cur < 2 * ent->limit) {
+ add_keys(dev, i, 1);
+ if (ent->cur < 2 * ent->limit)
+ queue_work(cache->wq, &ent->work);
+ } else if (ent->cur > 2 * ent->limit) {
+ if (!someone_adding(cache) &&
+ time_after(jiffies, cache->last_add + 60 * HZ)) {
+ remove_keys(dev, i, 1);
+ if (ent->cur > ent->limit)
+ queue_work(cache->wq, &ent->work);
+ } else {
+ queue_delayed_work(cache->wq, &ent->dwork, 60 * HZ);
+ }
+ }
+}
+
+static void delayed_cache_work_func(struct work_struct *work)
+{
+ struct mlx5_cache_ent *ent;
+
+ ent = container_of(work, struct mlx5_cache_ent, dwork.work);
+ __cache_work_func(ent);
+}
+
+static void cache_work_func(struct work_struct *work)
+{
+ struct mlx5_cache_ent *ent;
+
+ ent = container_of(work, struct mlx5_cache_ent, work);
+ __cache_work_func(ent);
+}
+
+static struct mlx5_ib_mr *alloc_cached_mr(struct mlx5_ib_dev *dev, int order)
+{
+ struct mlx5_mr_cache *cache = &dev->cache;
+ struct mlx5_ib_mr *mr = NULL;
+ struct mlx5_cache_ent *ent;
+ int c;
+ int i;
+
+ c = order2idx(dev, order);
+ if (c < 0 || c >= MAX_MR_CACHE_ENTRIES) {
+ mlx5_ib_warn(dev, "order %d, cache index %d\n", order, c);
+ return NULL;
+ }
+
+ for (i = c; i < MAX_MR_CACHE_ENTRIES; i++) {
+ ent = &cache->ent[i];
+
+ mlx5_ib_dbg(dev, "order %d, cache index %d\n", ent->order, i);
+
+ spin_lock(&ent->lock);
+ if (!list_empty(&ent->head)) {
+ mr = list_first_entry(&ent->head, struct mlx5_ib_mr,
+ list);
+ list_del(&mr->list);
+ ent->cur--;
+ spin_unlock(&ent->lock);
+ if (ent->cur < ent->limit)
+ queue_work(cache->wq, &ent->work);
+ break;
+ }
+ spin_unlock(&ent->lock);
+
+ queue_work(cache->wq, &ent->work);
+
+ if (mr)
+ break;
+ }
+
+ if (!mr)
+ cache->ent[c].miss++;
+
+ return mr;
+}
+
+static void free_cached_mr(struct mlx5_ib_dev *dev, struct mlx5_ib_mr *mr)
+{
+ struct mlx5_mr_cache *cache = &dev->cache;
+ struct mlx5_cache_ent *ent;
+ int shrink = 0;
+ int c;
+
+ c = order2idx(dev, mr->order);
+ if (c < 0 || c >= MAX_MR_CACHE_ENTRIES) {
+ mlx5_ib_warn(dev, "order %d, cache index %d\n", mr->order, c);
+ return;
+ }
+ ent = &cache->ent[c];
+ spin_lock(&ent->lock);
+ list_add_tail(&mr->list, &ent->head);
+ ent->cur++;
+ if (ent->cur > 2 * ent->limit)
+ shrink = 1;
+ spin_unlock(&ent->lock);
+
+ if (shrink)
+ queue_work(cache->wq, &ent->work);
+}
+
+static void clean_keys(struct mlx5_ib_dev *dev, int c)
+{
+ struct device *ddev = dev->ib_dev.dma_device;
+ struct mlx5_mr_cache *cache = &dev->cache;
+ struct mlx5_cache_ent *ent = &cache->ent[c];
+ struct mlx5_ib_mr *mr;
+ int size;
+ int err;
+
+ while (1) {
+ spin_lock(&ent->lock);
+ if (list_empty(&ent->head)) {
+ spin_unlock(&ent->lock);
+ return;
+ }
+ mr = list_first_entry(&ent->head, struct mlx5_ib_mr, list);
+ list_del(&mr->list);
+ ent->cur--;
+ ent->size--;
+ spin_unlock(&ent->lock);
+ err = mlx5_core_destroy_mkey(&dev->mdev, &mr->mmr);
+ if (err) {
+ mlx5_ib_warn(dev, "failed destroy mkey\n");
+ } else {
+ size = ALIGN(sizeof(u64) * (1 << mr->order), 0x40);
+ dma_unmap_single(ddev, mr->dma, size, DMA_TO_DEVICE);
+ kfree(mr->pas);
+ kfree(mr);
+ }
+ }
+}
+
+static int mlx5_mr_cache_debugfs_init(struct mlx5_ib_dev *dev)
+{
+ struct mlx5_mr_cache *cache = &dev->cache;
+ struct mlx5_cache_ent *ent;
+ int i;
+
+ if (!mlx5_debugfs_root)
+ return 0;
+
+ cache->root = debugfs_create_dir("mr_cache", dev->mdev.priv.dbg_root);
+ if (!cache->root)
+ return -ENOMEM;
+
+ for (i = 0; i < MAX_MR_CACHE_ENTRIES; i++) {
+ ent = &cache->ent[i];
+ sprintf(ent->name, "%d", ent->order);
+ ent->dir = debugfs_create_dir(ent->name, cache->root);
+ if (!ent->dir)
+ return -ENOMEM;
+
+ ent->fsize = debugfs_create_file("size", 0600, ent->dir, ent,
+ &size_fops);
+ if (!ent->fsize)
+ return -ENOMEM;
+
+ ent->flimit = debugfs_create_file("limit", 0600, ent->dir, ent,
+ &limit_fops);
+ if (!ent->flimit)
+ return -ENOMEM;
+
+ ent->fcur = debugfs_create_u32("cur", 0400, ent->dir,
+ &ent->cur);
+ if (!ent->fcur)
+ return -ENOMEM;
+
+ ent->fmiss = debugfs_create_u32("miss", 0600, ent->dir,
+ &ent->miss);
+ if (!ent->fmiss)
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+static void mlx5_mr_cache_debugfs_cleanup(struct mlx5_ib_dev *dev)
+{
+ if (!mlx5_debugfs_root)
+ return;
+
+ debugfs_remove_recursive(dev->cache.root);
+}
+
+int mlx5_mr_cache_init(struct mlx5_ib_dev *dev)
+{
+ struct mlx5_mr_cache *cache = &dev->cache;
+ struct mlx5_cache_ent *ent;
+ int limit;
+ int size;
+ int err;
+ int i;
+
+ cache->wq = create_singlethread_workqueue("mkey_cache");
+ if (!cache->wq) {
+ mlx5_ib_warn(dev, "failed to create work queue\n");
+ return -ENOMEM;
+ }
+
+ for (i = 0; i < MAX_MR_CACHE_ENTRIES; i++) {
+ INIT_LIST_HEAD(&cache->ent[i].head);
+ spin_lock_init(&cache->ent[i].lock);
+
+ ent = &cache->ent[i];
+ INIT_LIST_HEAD(&ent->head);
+ spin_lock_init(&ent->lock);
+ ent->order = i + 2;
+ ent->dev = dev;
+
+ if (dev->mdev.profile->mask & MLX5_PROF_MASK_MR_CACHE) {
+ size = dev->mdev.profile->mr_cache[i].size;
+ limit = dev->mdev.profile->mr_cache[i].limit;
+ } else {
+ size = DEF_CACHE_SIZE;
+ limit = 0;
+ }
+ INIT_WORK(&ent->work, cache_work_func);
+ INIT_DELAYED_WORK(&ent->dwork, delayed_cache_work_func);
+ ent->limit = limit;
+ queue_work(cache->wq, &ent->work);
+ }
+
+ err = mlx5_mr_cache_debugfs_init(dev);
+ if (err)
+ mlx5_ib_warn(dev, "cache debugfs failure\n");
+
+ return 0;
+}
+
+int mlx5_mr_cache_cleanup(struct mlx5_ib_dev *dev)
+{
+ int i;
+
+ dev->cache.stopped = 1;
+ destroy_workqueue(dev->cache.wq);
+
+ mlx5_mr_cache_debugfs_cleanup(dev);
+
+ for (i = 0; i < MAX_MR_CACHE_ENTRIES; i++)
+ clean_keys(dev, i);
+
+ return 0;
+}
+
+struct ib_mr *mlx5_ib_get_dma_mr(struct ib_pd *pd, int acc)
+{
+ struct mlx5_ib_dev *dev = to_mdev(pd->device);
+ struct mlx5_core_dev *mdev = &dev->mdev;
+ struct mlx5_create_mkey_mbox_in *in;
+ struct mlx5_mkey_seg *seg;
+ struct mlx5_ib_mr *mr;
+ int err;
+
+ mr = kzalloc(sizeof(*mr), GFP_KERNEL);
+ if (!mr)
+ return ERR_PTR(-ENOMEM);
+
+ in = kzalloc(sizeof(*in), GFP_KERNEL);
+ if (!in) {
+ err = -ENOMEM;
+ goto err_free;
+ }
+
+ seg = &in->seg;
+ seg->flags = convert_access(acc) | MLX5_ACCESS_MODE_PA;
+ seg->flags_pd = cpu_to_be32(to_mpd(pd)->pdn | MLX5_MKEY_LEN64);
+ seg->qpn_mkey7_0 = cpu_to_be32(0xffffff << 8);
+ seg->start_addr = 0;
+
+ err = mlx5_core_create_mkey(mdev, &mr->mmr, in, sizeof(*in));
+ if (err)
+ goto err_in;
+
+ kfree(in);
+ mr->ibmr.lkey = mr->mmr.key;
+ mr->ibmr.rkey = mr->mmr.key;
+ mr->umem = NULL;
+
+ return &mr->ibmr;
+
+err_in:
+ kfree(in);
+
+err_free:
+ kfree(mr);
+
+ return ERR_PTR(err);
+}
+
+static int get_octo_len(u64 addr, u64 len, int page_size)
+{
+ u64 offset;
+ int npages;
+
+ offset = addr & (page_size - 1);
+ npages = ALIGN(len + offset, page_size) >> ilog2(page_size);
+ return (npages + 1) / 2;
+}
+
+static int use_umr(int order)
+{
+ return order <= 17;
+}
+
+static void prep_umr_reg_wqe(struct ib_pd *pd, struct ib_send_wr *wr,
+ struct ib_sge *sg, u64 dma, int n, u32 key,
+ int page_shift, u64 virt_addr, u64 len,
+ int access_flags)
+{
+ struct mlx5_ib_dev *dev = to_mdev(pd->device);
+ struct ib_mr *mr = dev->umrc.mr;
+
+ sg->addr = dma;
+ sg->length = ALIGN(sizeof(u64) * n, 64);
+ sg->lkey = mr->lkey;
+
+ wr->next = NULL;
+ wr->send_flags = 0;
+ wr->sg_list = sg;
+ if (n)
+ wr->num_sge = 1;
+ else
+ wr->num_sge = 0;
+
+ wr->opcode = MLX5_IB_WR_UMR;
+ wr->wr.fast_reg.page_list_len = n;
+ wr->wr.fast_reg.page_shift = page_shift;
+ wr->wr.fast_reg.rkey = key;
+ wr->wr.fast_reg.iova_start = virt_addr;
+ wr->wr.fast_reg.length = len;
+ wr->wr.fast_reg.access_flags = access_flags;
+ wr->wr.fast_reg.page_list = (struct ib_fast_reg_page_list *)pd;
+}
+
+static void prep_umr_unreg_wqe(struct mlx5_ib_dev *dev,
+ struct ib_send_wr *wr, u32 key)
+{
+ wr->send_flags = MLX5_IB_SEND_UMR_UNREG;
+ wr->opcode = MLX5_IB_WR_UMR;
+ wr->wr.fast_reg.rkey = key;
+}
+
+void mlx5_umr_cq_handler(struct ib_cq *cq, void *cq_context)
+{
+ struct mlx5_ib_mr *mr;
+ struct ib_wc wc;
+ int err;
+
+ while (1) {
+ err = ib_poll_cq(cq, 1, &wc);
+ if (err < 0) {
+ pr_warn("poll cq error %d\n", err);
+ return;
+ }
+ if (err == 0)
+ break;
+
+ mr = (struct mlx5_ib_mr *)(unsigned long)wc.wr_id;
+ mr->status = wc.status;
+ complete(&mr->done);
+ }
+ ib_req_notify_cq(cq, IB_CQ_NEXT_COMP);
+}
+
+static struct mlx5_ib_mr *reg_umr(struct ib_pd *pd, struct ib_umem *umem,
+ u64 virt_addr, u64 len, int npages,
+ int page_shift, int order, int access_flags)
+{
+ struct mlx5_ib_dev *dev = to_mdev(pd->device);
+ struct umr_common *umrc = &dev->umrc;
+ struct ib_send_wr wr, *bad;
+ struct mlx5_ib_mr *mr;
+ struct ib_sge sg;
+ int err;
+ int i;
+
+ for (i = 0; i < 10; i++) {
+ mr = alloc_cached_mr(dev, order);
+ if (mr)
+ break;
+
+ err = add_keys(dev, order2idx(dev, order), 1);
+ if (err) {
+ mlx5_ib_warn(dev, "add_keys failed\n");
+ break;
+ }
+ }
+
+ if (!mr)
+ return ERR_PTR(-EAGAIN);
+
+ mlx5_ib_populate_pas(dev, umem, page_shift, mr_align(mr->pas, 0x40), 1);
+
+ memset(&wr, 0, sizeof(wr));
+ wr.wr_id = (u64)(unsigned long)mr;
+ prep_umr_reg_wqe(pd, &wr, &sg, mr->dma, npages, mr->mmr.key, page_shift, virt_addr, len, access_flags);
+
+ /* We serialize polls so one process does not kidnap another's
+ * completion. This is not a problem since wr is completed in
+ * around 1 usec
+ */
+ down(&umrc->sem);
+ init_completion(&mr->done);
+ err = ib_post_send(umrc->qp, &wr, &bad);
+ if (err) {
+ mlx5_ib_warn(dev, "post send failed, err %d\n", err);
+ up(&umrc->sem);
+ goto error;
+ }
+ wait_for_completion(&mr->done);
+ up(&umrc->sem);
+
+ if (mr->status != IB_WC_SUCCESS) {
+ mlx5_ib_warn(dev, "reg umr failed\n");
+ err = -EFAULT;
+ goto error;
+ }
+
+ return mr;
+
+error:
+ free_cached_mr(dev, mr);
+ return ERR_PTR(err);
+}
+
+static struct mlx5_ib_mr *reg_create(struct ib_pd *pd, u64 virt_addr,
+ u64 length, struct ib_umem *umem,
+ int npages, int page_shift,
+ int access_flags)
+{
+ struct mlx5_ib_dev *dev = to_mdev(pd->device);
+ struct mlx5_create_mkey_mbox_in *in;
+ struct mlx5_ib_mr *mr;
+ int inlen;
+ int err;
+
+ mr = kzalloc(sizeof(*mr), GFP_KERNEL);
+ if (!mr)
+ return ERR_PTR(-ENOMEM);
+
+ inlen = sizeof(*in) + sizeof(*in->pas) * ((npages + 1) / 2) * 2;
+ in = mlx5_vzalloc(inlen);
+ if (!in) {
+ err = -ENOMEM;
+ goto err_1;
+ }
+ mlx5_ib_populate_pas(dev, umem, page_shift, in->pas, 0);
+
+ in->seg.flags = convert_access(access_flags) |
+ MLX5_ACCESS_MODE_MTT;
+ in->seg.flags_pd = cpu_to_be32(to_mpd(pd)->pdn);
+ in->seg.start_addr = cpu_to_be64(virt_addr);
+ in->seg.len = cpu_to_be64(length);
+ in->seg.bsfs_octo_size = 0;
+ in->seg.xlt_oct_size = cpu_to_be32(get_octo_len(virt_addr, length, 1 << page_shift));
+ in->seg.log2_page_size = page_shift;
+ in->seg.qpn_mkey7_0 = cpu_to_be32(0xffffff << 8);
+ in->xlat_oct_act_size = cpu_to_be32(get_octo_len(virt_addr, length, 1 << page_shift));
+ err = mlx5_core_create_mkey(&dev->mdev, &mr->mmr, in, inlen);
+ if (err) {
+ mlx5_ib_warn(dev, "create mkey failed\n");
+ goto err_2;
+ }
+ mr->umem = umem;
+ mlx5_vfree(in);
+
+ mlx5_ib_dbg(dev, "mkey = 0x%x\n", mr->mmr.key);
+
+ return mr;
+
+err_2:
+ mlx5_vfree(in);
+
+err_1:
+ kfree(mr);
+
+ return ERR_PTR(err);
+}
+
+struct ib_mr *mlx5_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
+ u64 virt_addr, int access_flags,
+ struct ib_udata *udata)
+{
+ struct mlx5_ib_dev *dev = to_mdev(pd->device);
+ struct mlx5_ib_mr *mr = NULL;
+ struct ib_umem *umem;
+ int page_shift;
+ int npages;
+ int ncont;
+ int order;
+ int err;
+
+ mlx5_ib_dbg(dev, "start 0x%llx, virt_addr 0x%llx, length 0x%llx\n",
+ start, virt_addr, length);
+ umem = ib_umem_get(pd->uobject->context, start, length, access_flags,
+ 0);
+ if (IS_ERR(umem)) {
+ mlx5_ib_dbg(dev, "umem get failed\n");
+ return (void *)umem;
+ }
+
+ mlx5_ib_cont_pages(umem, start, &npages, &page_shift, &ncont, &order);
+ if (!npages) {
+ mlx5_ib_warn(dev, "avoid zero region\n");
+ err = -EINVAL;
+ goto error;
+ }
+
+ mlx5_ib_dbg(dev, "npages %d, ncont %d, order %d, page_shift %d\n",
+ npages, ncont, order, page_shift);
+
+ if (use_umr(order)) {
+ mr = reg_umr(pd, umem, virt_addr, length, ncont, page_shift,
+ order, access_flags);
+ if (PTR_ERR(mr) == -EAGAIN) {
+ mlx5_ib_dbg(dev, "cache empty for order %d", order);
+ mr = NULL;
+ }
+ }
+
+ if (!mr)
+ mr = reg_create(pd, virt_addr, length, umem, ncont, page_shift,
+ access_flags);
+
+ if (IS_ERR(mr)) {
+ err = PTR_ERR(mr);
+ goto error;
+ }
+
+ mlx5_ib_dbg(dev, "mkey 0x%x\n", mr->mmr.key);
+
+ mr->umem = umem;
+ mr->npages = npages;
+ spin_lock(&dev->mr_lock);
+ dev->mdev.priv.reg_pages += npages;
+ spin_unlock(&dev->mr_lock);
+ mr->ibmr.lkey = mr->mmr.key;
+ mr->ibmr.rkey = mr->mmr.key;
+
+ return &mr->ibmr;
+
+error:
+ ib_umem_release(umem);
+ return ERR_PTR(err);
+}
+
+static int unreg_umr(struct mlx5_ib_dev *dev, struct mlx5_ib_mr *mr)
+{
+ struct umr_common *umrc = &dev->umrc;
+ struct ib_send_wr wr, *bad;
+ int err;
+
+ memset(&wr, 0, sizeof(wr));
+ wr.wr_id = (u64)(unsigned long)mr;
+ prep_umr_unreg_wqe(dev, &wr, mr->mmr.key);
+
+ down(&umrc->sem);
+ init_completion(&mr->done);
+ err = ib_post_send(umrc->qp, &wr, &bad);
+ if (err) {
+ up(&umrc->sem);
+ mlx5_ib_dbg(dev, "err %d\n", err);
+ goto error;
+ }
+ wait_for_completion(&mr->done);
+ up(&umrc->sem);
+ if (mr->status != IB_WC_SUCCESS) {
+ mlx5_ib_warn(dev, "unreg umr failed\n");
+ err = -EFAULT;
+ goto error;
+ }
+ return 0;
+
+error:
+ return err;
+}
+
+int mlx5_ib_dereg_mr(struct ib_mr *ibmr)
+{
+ struct mlx5_ib_dev *dev = to_mdev(ibmr->device);
+ struct mlx5_ib_mr *mr = to_mmr(ibmr);
+ struct ib_umem *umem = mr->umem;
+ int npages = mr->npages;
+ int umred = mr->umred;
+ int err;
+
+ if (!umred) {
+ err = mlx5_core_destroy_mkey(&dev->mdev, &mr->mmr);
+ if (err) {
+ mlx5_ib_warn(dev, "failed to destroy mkey 0x%x (%d)\n",
+ mr->mmr.key, err);
+ return err;
+ }
+ } else {
+ err = unreg_umr(dev, mr);
+ if (err) {
+ mlx5_ib_warn(dev, "failed unregister\n");
+ return err;
+ }
+ free_cached_mr(dev, mr);
+ }
+
+ if (umem) {
+ ib_umem_release(umem);
+ spin_lock(&dev->mr_lock);
+ dev->mdev.priv.reg_pages -= npages;
+ spin_unlock(&dev->mr_lock);
+ }
+
+ if (!umred)
+ kfree(mr);
+
+ return 0;
+}
+
+struct ib_mr *mlx5_ib_alloc_fast_reg_mr(struct ib_pd *pd,
+ int max_page_list_len)
+{
+ struct mlx5_ib_dev *dev = to_mdev(pd->device);
+ struct mlx5_create_mkey_mbox_in *in;
+ struct mlx5_ib_mr *mr;
+ int err;
+
+ mr = kzalloc(sizeof(*mr), GFP_KERNEL);
+ if (!mr)
+ return ERR_PTR(-ENOMEM);
+
+ in = kzalloc(sizeof(*in), GFP_KERNEL);
+ if (!in) {
+ err = -ENOMEM;
+ goto err_free;
+ }
+
+ in->seg.status = 1 << 6; /* free */
+ in->seg.xlt_oct_size = cpu_to_be32((max_page_list_len + 1) / 2);
+ in->seg.qpn_mkey7_0 = cpu_to_be32(0xffffff << 8);
+ in->seg.flags = MLX5_PERM_UMR_EN | MLX5_ACCESS_MODE_MTT;
+ in->seg.flags_pd = cpu_to_be32(to_mpd(pd)->pdn);
+ /*
+ * TBD not needed - issue 197292 */
+ in->seg.log2_page_size = PAGE_SHIFT;
+
+ err = mlx5_core_create_mkey(&dev->mdev, &mr->mmr, in, sizeof(*in));
+ kfree(in);
+ if (err)
+ goto err_free;
+
+ mr->ibmr.lkey = mr->mmr.key;
+ mr->ibmr.rkey = mr->mmr.key;
+ mr->umem = NULL;
+
+ return &mr->ibmr;
+
+err_free:
+ kfree(mr);
+ return ERR_PTR(err);
+}
+
+struct ib_fast_reg_page_list *mlx5_ib_alloc_fast_reg_page_list(struct ib_device *ibdev,
+ int page_list_len)
+{
+ struct mlx5_ib_fast_reg_page_list *mfrpl;
+ int size = page_list_len * sizeof(u64);
+
+ mfrpl = kmalloc(sizeof(*mfrpl), GFP_KERNEL);
+ if (!mfrpl)
+ return ERR_PTR(-ENOMEM);
+
+ mfrpl->ibfrpl.page_list = kmalloc(size, GFP_KERNEL);
+ if (!mfrpl->ibfrpl.page_list)
+ goto err_free;
+
+ mfrpl->mapped_page_list = dma_alloc_coherent(ibdev->dma_device,
+ size, &mfrpl->map,
+ GFP_KERNEL);
+ if (!mfrpl->mapped_page_list)
+ goto err_free;
+
+ WARN_ON(mfrpl->map & 0x3f);
+
+ return &mfrpl->ibfrpl;
+
+err_free:
+ kfree(mfrpl->ibfrpl.page_list);
+ kfree(mfrpl);
+ return ERR_PTR(-ENOMEM);
+}
+
+void mlx5_ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list)
+{
+ struct mlx5_ib_fast_reg_page_list *mfrpl = to_mfrpl(page_list);
+ struct mlx5_ib_dev *dev = to_mdev(page_list->device);
+ int size = page_list->max_page_list_len * sizeof(u64);
+
+ dma_free_coherent(&dev->mdev.pdev->dev, size, mfrpl->mapped_page_list,
+ mfrpl->map);
+ kfree(mfrpl->ibfrpl.page_list);
+ kfree(mfrpl);
+}
diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c
new file mode 100644
index 00000000000..16ac54c9819
--- /dev/null
+++ b/drivers/infiniband/hw/mlx5/qp.c
@@ -0,0 +1,2524 @@
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/module.h>
+#include <rdma/ib_umem.h>
+#include "mlx5_ib.h"
+#include "user.h"
+
+/* not supported currently */
+static int wq_signature;
+
+enum {
+ MLX5_IB_ACK_REQ_FREQ = 8,
+};
+
+enum {
+ MLX5_IB_DEFAULT_SCHED_QUEUE = 0x83,
+ MLX5_IB_DEFAULT_QP0_SCHED_QUEUE = 0x3f,
+ MLX5_IB_LINK_TYPE_IB = 0,
+ MLX5_IB_LINK_TYPE_ETH = 1
+};
+
+enum {
+ MLX5_IB_SQ_STRIDE = 6,
+ MLX5_IB_CACHE_LINE_SIZE = 64,
+};
+
+static const u32 mlx5_ib_opcode[] = {
+ [IB_WR_SEND] = MLX5_OPCODE_SEND,
+ [IB_WR_SEND_WITH_IMM] = MLX5_OPCODE_SEND_IMM,
+ [IB_WR_RDMA_WRITE] = MLX5_OPCODE_RDMA_WRITE,
+ [IB_WR_RDMA_WRITE_WITH_IMM] = MLX5_OPCODE_RDMA_WRITE_IMM,
+ [IB_WR_RDMA_READ] = MLX5_OPCODE_RDMA_READ,
+ [IB_WR_ATOMIC_CMP_AND_SWP] = MLX5_OPCODE_ATOMIC_CS,
+ [IB_WR_ATOMIC_FETCH_AND_ADD] = MLX5_OPCODE_ATOMIC_FA,
+ [IB_WR_SEND_WITH_INV] = MLX5_OPCODE_SEND_INVAL,
+ [IB_WR_LOCAL_INV] = MLX5_OPCODE_UMR,
+ [IB_WR_FAST_REG_MR] = MLX5_OPCODE_UMR,
+ [IB_WR_MASKED_ATOMIC_CMP_AND_SWP] = MLX5_OPCODE_ATOMIC_MASKED_CS,
+ [IB_WR_MASKED_ATOMIC_FETCH_AND_ADD] = MLX5_OPCODE_ATOMIC_MASKED_FA,
+ [MLX5_IB_WR_UMR] = MLX5_OPCODE_UMR,
+};
+
+struct umr_wr {
+ u64 virt_addr;
+ struct ib_pd *pd;
+ unsigned int page_shift;
+ unsigned int npages;
+ u32 length;
+ int access_flags;
+ u32 mkey;
+};
+
+static int is_qp0(enum ib_qp_type qp_type)
+{
+ return qp_type == IB_QPT_SMI;
+}
+
+static int is_qp1(enum ib_qp_type qp_type)
+{
+ return qp_type == IB_QPT_GSI;
+}
+
+static int is_sqp(enum ib_qp_type qp_type)
+{
+ return is_qp0(qp_type) || is_qp1(qp_type);
+}
+
+static void *get_wqe(struct mlx5_ib_qp *qp, int offset)
+{
+ return mlx5_buf_offset(&qp->buf, offset);
+}
+
+static void *get_recv_wqe(struct mlx5_ib_qp *qp, int n)
+{
+ return get_wqe(qp, qp->rq.offset + (n << qp->rq.wqe_shift));
+}
+
+void *mlx5_get_send_wqe(struct mlx5_ib_qp *qp, int n)
+{
+ return get_wqe(qp, qp->sq.offset + (n << MLX5_IB_SQ_STRIDE));
+}
+
+static void mlx5_ib_qp_event(struct mlx5_core_qp *qp, int type)
+{
+ struct ib_qp *ibqp = &to_mibqp(qp)->ibqp;
+ struct ib_event event;
+
+ if (type == MLX5_EVENT_TYPE_PATH_MIG)
+ to_mibqp(qp)->port = to_mibqp(qp)->alt_port;
+
+ if (ibqp->event_handler) {
+ event.device = ibqp->device;
+ event.element.qp = ibqp;
+ switch (type) {
+ case MLX5_EVENT_TYPE_PATH_MIG:
+ event.event = IB_EVENT_PATH_MIG;
+ break;
+ case MLX5_EVENT_TYPE_COMM_EST:
+ event.event = IB_EVENT_COMM_EST;
+ break;
+ case MLX5_EVENT_TYPE_SQ_DRAINED:
+ event.event = IB_EVENT_SQ_DRAINED;
+ break;
+ case MLX5_EVENT_TYPE_SRQ_LAST_WQE:
+ event.event = IB_EVENT_QP_LAST_WQE_REACHED;
+ break;
+ case MLX5_EVENT_TYPE_WQ_CATAS_ERROR:
+ event.event = IB_EVENT_QP_FATAL;
+ break;
+ case MLX5_EVENT_TYPE_PATH_MIG_FAILED:
+ event.event = IB_EVENT_PATH_MIG_ERR;
+ break;
+ case MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR:
+ event.event = IB_EVENT_QP_REQ_ERR;
+ break;
+ case MLX5_EVENT_TYPE_WQ_ACCESS_ERROR:
+ event.event = IB_EVENT_QP_ACCESS_ERR;
+ break;
+ default:
+ pr_warn("mlx5_ib: Unexpected event type %d on QP %06x\n", type, qp->qpn);
+ return;
+ }
+
+ ibqp->event_handler(&event, ibqp->qp_context);
+ }
+}
+
+static int set_rq_size(struct mlx5_ib_dev *dev, struct ib_qp_cap *cap,
+ int has_rq, struct mlx5_ib_qp *qp, struct mlx5_ib_create_qp *ucmd)
+{
+ int wqe_size;
+ int wq_size;
+
+ /* Sanity check RQ size before proceeding */
+ if (cap->max_recv_wr > dev->mdev.caps.max_wqes)
+ return -EINVAL;
+
+ if (!has_rq) {
+ qp->rq.max_gs = 0;
+ qp->rq.wqe_cnt = 0;
+ qp->rq.wqe_shift = 0;
+ } else {
+ if (ucmd) {
+ qp->rq.wqe_cnt = ucmd->rq_wqe_count;
+ qp->rq.wqe_shift = ucmd->rq_wqe_shift;
+ qp->rq.max_gs = (1 << qp->rq.wqe_shift) / sizeof(struct mlx5_wqe_data_seg) - qp->wq_sig;
+ qp->rq.max_post = qp->rq.wqe_cnt;
+ } else {
+ wqe_size = qp->wq_sig ? sizeof(struct mlx5_wqe_signature_seg) : 0;
+ wqe_size += cap->max_recv_sge * sizeof(struct mlx5_wqe_data_seg);
+ wqe_size = roundup_pow_of_two(wqe_size);
+ wq_size = roundup_pow_of_two(cap->max_recv_wr) * wqe_size;
+ wq_size = max_t(int, wq_size, MLX5_SEND_WQE_BB);
+ qp->rq.wqe_cnt = wq_size / wqe_size;
+ if (wqe_size > dev->mdev.caps.max_rq_desc_sz) {
+ mlx5_ib_dbg(dev, "wqe_size %d, max %d\n",
+ wqe_size,
+ dev->mdev.caps.max_rq_desc_sz);
+ return -EINVAL;
+ }
+ qp->rq.wqe_shift = ilog2(wqe_size);
+ qp->rq.max_gs = (1 << qp->rq.wqe_shift) / sizeof(struct mlx5_wqe_data_seg) - qp->wq_sig;
+ qp->rq.max_post = qp->rq.wqe_cnt;
+ }
+ }
+
+ return 0;
+}
+
+static int sq_overhead(enum ib_qp_type qp_type)
+{
+ int size;
+
+ switch (qp_type) {
+ case IB_QPT_XRC_INI:
+ size = sizeof(struct mlx5_wqe_xrc_seg);
+ /* fall through */
+ case IB_QPT_RC:
+ size += sizeof(struct mlx5_wqe_ctrl_seg) +
+ sizeof(struct mlx5_wqe_atomic_seg) +
+ sizeof(struct mlx5_wqe_raddr_seg);
+ break;
+
+ case IB_QPT_UC:
+ size = sizeof(struct mlx5_wqe_ctrl_seg) +
+ sizeof(struct mlx5_wqe_raddr_seg);
+ break;
+
+ case IB_QPT_UD:
+ case IB_QPT_SMI:
+ case IB_QPT_GSI:
+ size = sizeof(struct mlx5_wqe_ctrl_seg) +
+ sizeof(struct mlx5_wqe_datagram_seg);
+ break;
+
+ case MLX5_IB_QPT_REG_UMR:
+ size = sizeof(struct mlx5_wqe_ctrl_seg) +
+ sizeof(struct mlx5_wqe_umr_ctrl_seg) +
+ sizeof(struct mlx5_mkey_seg);
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return size;
+}
+
+static int calc_send_wqe(struct ib_qp_init_attr *attr)
+{
+ int inl_size = 0;
+ int size;
+
+ size = sq_overhead(attr->qp_type);
+ if (size < 0)
+ return size;
+
+ if (attr->cap.max_inline_data) {
+ inl_size = size + sizeof(struct mlx5_wqe_inline_seg) +
+ attr->cap.max_inline_data;
+ }
+
+ size += attr->cap.max_send_sge * sizeof(struct mlx5_wqe_data_seg);
+
+ return ALIGN(max_t(int, inl_size, size), MLX5_SEND_WQE_BB);
+}
+
+static int calc_sq_size(struct mlx5_ib_dev *dev, struct ib_qp_init_attr *attr,
+ struct mlx5_ib_qp *qp)
+{
+ int wqe_size;
+ int wq_size;
+
+ if (!attr->cap.max_send_wr)
+ return 0;
+
+ wqe_size = calc_send_wqe(attr);
+ mlx5_ib_dbg(dev, "wqe_size %d\n", wqe_size);
+ if (wqe_size < 0)
+ return wqe_size;
+
+ if (wqe_size > dev->mdev.caps.max_sq_desc_sz) {
+ mlx5_ib_dbg(dev, "\n");
+ return -EINVAL;
+ }
+
+ qp->max_inline_data = wqe_size - sq_overhead(attr->qp_type) -
+ sizeof(struct mlx5_wqe_inline_seg);
+ attr->cap.max_inline_data = qp->max_inline_data;
+
+ wq_size = roundup_pow_of_two(attr->cap.max_send_wr * wqe_size);
+ qp->sq.wqe_cnt = wq_size / MLX5_SEND_WQE_BB;
+ qp->sq.wqe_shift = ilog2(MLX5_SEND_WQE_BB);
+ qp->sq.max_gs = attr->cap.max_send_sge;
+ qp->sq.max_post = 1 << ilog2(wq_size / wqe_size);
+
+ return wq_size;
+}
+
+static int set_user_buf_size(struct mlx5_ib_dev *dev,
+ struct mlx5_ib_qp *qp,
+ struct mlx5_ib_create_qp *ucmd)
+{
+ int desc_sz = 1 << qp->sq.wqe_shift;
+
+ if (desc_sz > dev->mdev.caps.max_sq_desc_sz) {
+ mlx5_ib_warn(dev, "desc_sz %d, max_sq_desc_sz %d\n",
+ desc_sz, dev->mdev.caps.max_sq_desc_sz);
+ return -EINVAL;
+ }
+
+ if (ucmd->sq_wqe_count && ((1 << ilog2(ucmd->sq_wqe_count)) != ucmd->sq_wqe_count)) {
+ mlx5_ib_warn(dev, "sq_wqe_count %d, sq_wqe_count %d\n",
+ ucmd->sq_wqe_count, ucmd->sq_wqe_count);
+ return -EINVAL;
+ }
+
+ qp->sq.wqe_cnt = ucmd->sq_wqe_count;
+
+ if (qp->sq.wqe_cnt > dev->mdev.caps.max_wqes) {
+ mlx5_ib_warn(dev, "wqe_cnt %d, max_wqes %d\n",
+ qp->sq.wqe_cnt, dev->mdev.caps.max_wqes);
+ return -EINVAL;
+ }
+
+ qp->buf_size = (qp->rq.wqe_cnt << qp->rq.wqe_shift) +
+ (qp->sq.wqe_cnt << 6);
+
+ return 0;
+}
+
+static int qp_has_rq(struct ib_qp_init_attr *attr)
+{
+ if (attr->qp_type == IB_QPT_XRC_INI ||
+ attr->qp_type == IB_QPT_XRC_TGT || attr->srq ||
+ attr->qp_type == MLX5_IB_QPT_REG_UMR ||
+ !attr->cap.max_recv_wr)
+ return 0;
+
+ return 1;
+}
+
+static int alloc_high_class_uuar(struct mlx5_uuar_info *uuari)
+{
+ int nuuars = uuari->num_uars * MLX5_BF_REGS_PER_PAGE;
+ int start_uuar;
+ int i;
+
+ start_uuar = nuuars - uuari->num_low_latency_uuars;
+ for (i = start_uuar; i < nuuars; i++) {
+ if (!test_bit(i, uuari->bitmap)) {
+ set_bit(i, uuari->bitmap);
+ uuari->count[i]++;
+ return i;
+ }
+ }
+
+ return -ENOMEM;
+}
+
+static int alloc_med_class_uuar(struct mlx5_uuar_info *uuari)
+{
+ int nuuars = uuari->num_uars * MLX5_BF_REGS_PER_PAGE;
+ int minidx = 1;
+ int uuarn;
+ int end;
+ int i;
+
+ end = nuuars - uuari->num_low_latency_uuars;
+
+ for (i = 1; i < end; i++) {
+ uuarn = i & 3;
+ if (uuarn == 2 || uuarn == 3)
+ continue;
+
+ if (uuari->count[i] < uuari->count[minidx])
+ minidx = i;
+ }
+
+ uuari->count[minidx]++;
+ return minidx;
+}
+
+static int alloc_uuar(struct mlx5_uuar_info *uuari,
+ enum mlx5_ib_latency_class lat)
+{
+ int uuarn = -EINVAL;
+
+ mutex_lock(&uuari->lock);
+ switch (lat) {
+ case MLX5_IB_LATENCY_CLASS_LOW:
+ uuarn = 0;
+ uuari->count[uuarn]++;
+ break;
+
+ case MLX5_IB_LATENCY_CLASS_MEDIUM:
+ uuarn = alloc_med_class_uuar(uuari);
+ break;
+
+ case MLX5_IB_LATENCY_CLASS_HIGH:
+ uuarn = alloc_high_class_uuar(uuari);
+ break;
+
+ case MLX5_IB_LATENCY_CLASS_FAST_PATH:
+ uuarn = 2;
+ break;
+ }
+ mutex_unlock(&uuari->lock);
+
+ return uuarn;
+}
+
+static void free_med_class_uuar(struct mlx5_uuar_info *uuari, int uuarn)
+{
+ clear_bit(uuarn, uuari->bitmap);
+ --uuari->count[uuarn];
+}
+
+static void free_high_class_uuar(struct mlx5_uuar_info *uuari, int uuarn)
+{
+ clear_bit(uuarn, uuari->bitmap);
+ --uuari->count[uuarn];
+}
+
+static void free_uuar(struct mlx5_uuar_info *uuari, int uuarn)
+{
+ int nuuars = uuari->num_uars * MLX5_BF_REGS_PER_PAGE;
+ int high_uuar = nuuars - uuari->num_low_latency_uuars;
+
+ mutex_lock(&uuari->lock);
+ if (uuarn == 0) {
+ --uuari->count[uuarn];
+ goto out;
+ }
+
+ if (uuarn < high_uuar) {
+ free_med_class_uuar(uuari, uuarn);
+ goto out;
+ }
+
+ free_high_class_uuar(uuari, uuarn);
+
+out:
+ mutex_unlock(&uuari->lock);
+}
+
+static enum mlx5_qp_state to_mlx5_state(enum ib_qp_state state)
+{
+ switch (state) {
+ case IB_QPS_RESET: return MLX5_QP_STATE_RST;
+ case IB_QPS_INIT: return MLX5_QP_STATE_INIT;
+ case IB_QPS_RTR: return MLX5_QP_STATE_RTR;
+ case IB_QPS_RTS: return MLX5_QP_STATE_RTS;
+ case IB_QPS_SQD: return MLX5_QP_STATE_SQD;
+ case IB_QPS_SQE: return MLX5_QP_STATE_SQER;
+ case IB_QPS_ERR: return MLX5_QP_STATE_ERR;
+ default: return -1;
+ }
+}
+
+static int to_mlx5_st(enum ib_qp_type type)
+{
+ switch (type) {
+ case IB_QPT_RC: return MLX5_QP_ST_RC;
+ case IB_QPT_UC: return MLX5_QP_ST_UC;
+ case IB_QPT_UD: return MLX5_QP_ST_UD;
+ case MLX5_IB_QPT_REG_UMR: return MLX5_QP_ST_REG_UMR;
+ case IB_QPT_XRC_INI:
+ case IB_QPT_XRC_TGT: return MLX5_QP_ST_XRC;
+ case IB_QPT_SMI: return MLX5_QP_ST_QP0;
+ case IB_QPT_GSI: return MLX5_QP_ST_QP1;
+ case IB_QPT_RAW_IPV6: return MLX5_QP_ST_RAW_IPV6;
+ case IB_QPT_RAW_ETHERTYPE: return MLX5_QP_ST_RAW_ETHERTYPE;
+ case IB_QPT_RAW_PACKET:
+ case IB_QPT_MAX:
+ default: return -EINVAL;
+ }
+}
+
+static int uuarn_to_uar_index(struct mlx5_uuar_info *uuari, int uuarn)
+{
+ return uuari->uars[uuarn / MLX5_BF_REGS_PER_PAGE].index;
+}
+
+static int create_user_qp(struct mlx5_ib_dev *dev, struct ib_pd *pd,
+ struct mlx5_ib_qp *qp, struct ib_udata *udata,
+ struct mlx5_create_qp_mbox_in **in,
+ struct mlx5_ib_create_qp_resp *resp, int *inlen)
+{
+ struct mlx5_ib_ucontext *context;
+ struct mlx5_ib_create_qp ucmd;
+ int page_shift;
+ int uar_index;
+ int npages;
+ u32 offset;
+ int uuarn;
+ int ncont;
+ int err;
+
+ err = ib_copy_from_udata(&ucmd, udata, sizeof(ucmd));
+ if (err) {
+ mlx5_ib_dbg(dev, "copy failed\n");
+ return err;
+ }
+
+ context = to_mucontext(pd->uobject->context);
+ /*
+ * TBD: should come from the verbs when we have the API
+ */
+ uuarn = alloc_uuar(&context->uuari, MLX5_IB_LATENCY_CLASS_HIGH);
+ if (uuarn < 0) {
+ mlx5_ib_dbg(dev, "failed to allocate low latency UUAR\n");
+ mlx5_ib_dbg(dev, "reverting to high latency\n");
+ uuarn = alloc_uuar(&context->uuari, MLX5_IB_LATENCY_CLASS_LOW);
+ if (uuarn < 0) {
+ mlx5_ib_dbg(dev, "uuar allocation failed\n");
+ return uuarn;
+ }
+ }
+
+ uar_index = uuarn_to_uar_index(&context->uuari, uuarn);
+ mlx5_ib_dbg(dev, "uuarn 0x%x, uar_index 0x%x\n", uuarn, uar_index);
+
+ err = set_user_buf_size(dev, qp, &ucmd);
+ if (err)
+ goto err_uuar;
+
+ qp->umem = ib_umem_get(pd->uobject->context, ucmd.buf_addr,
+ qp->buf_size, 0, 0);
+ if (IS_ERR(qp->umem)) {
+ mlx5_ib_dbg(dev, "umem_get failed\n");
+ err = PTR_ERR(qp->umem);
+ goto err_uuar;
+ }
+
+ mlx5_ib_cont_pages(qp->umem, ucmd.buf_addr, &npages, &page_shift,
+ &ncont, NULL);
+ err = mlx5_ib_get_buf_offset(ucmd.buf_addr, page_shift, &offset);
+ if (err) {
+ mlx5_ib_warn(dev, "bad offset\n");
+ goto err_umem;
+ }
+ mlx5_ib_dbg(dev, "addr 0x%llx, size %d, npages %d, page_shift %d, ncont %d, offset %d\n",
+ ucmd.buf_addr, qp->buf_size, npages, page_shift, ncont, offset);
+
+ *inlen = sizeof(**in) + sizeof(*(*in)->pas) * ncont;
+ *in = mlx5_vzalloc(*inlen);
+ if (!*in) {
+ err = -ENOMEM;
+ goto err_umem;
+ }
+ mlx5_ib_populate_pas(dev, qp->umem, page_shift, (*in)->pas, 0);
+ (*in)->ctx.log_pg_sz_remote_qpn =
+ cpu_to_be32((page_shift - PAGE_SHIFT) << 24);
+ (*in)->ctx.params2 = cpu_to_be32(offset << 6);
+
+ (*in)->ctx.qp_counter_set_usr_page = cpu_to_be32(uar_index);
+ resp->uuar_index = uuarn;
+ qp->uuarn = uuarn;
+
+ err = mlx5_ib_db_map_user(context, ucmd.db_addr, &qp->db);
+ if (err) {
+ mlx5_ib_dbg(dev, "map failed\n");
+ goto err_free;
+ }
+
+ err = ib_copy_to_udata(udata, resp, sizeof(*resp));
+ if (err) {
+ mlx5_ib_dbg(dev, "copy failed\n");
+ goto err_unmap;
+ }
+ qp->create_type = MLX5_QP_USER;
+
+ return 0;
+
+err_unmap:
+ mlx5_ib_db_unmap_user(context, &qp->db);
+
+err_free:
+ mlx5_vfree(*in);
+
+err_umem:
+ ib_umem_release(qp->umem);
+
+err_uuar:
+ free_uuar(&context->uuari, uuarn);
+ return err;
+}
+
+static void destroy_qp_user(struct ib_pd *pd, struct mlx5_ib_qp *qp)
+{
+ struct mlx5_ib_ucontext *context;
+
+ context = to_mucontext(pd->uobject->context);
+ mlx5_ib_db_unmap_user(context, &qp->db);
+ ib_umem_release(qp->umem);
+ free_uuar(&context->uuari, qp->uuarn);
+}
+
+static int create_kernel_qp(struct mlx5_ib_dev *dev,
+ struct ib_qp_init_attr *init_attr,
+ struct mlx5_ib_qp *qp,
+ struct mlx5_create_qp_mbox_in **in, int *inlen)
+{
+ enum mlx5_ib_latency_class lc = MLX5_IB_LATENCY_CLASS_LOW;
+ struct mlx5_uuar_info *uuari;
+ int uar_index;
+ int uuarn;
+ int err;
+
+ uuari = &dev->mdev.priv.uuari;
+ if (init_attr->create_flags & IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK)
+ qp->flags |= MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK;
+
+ if (init_attr->qp_type == MLX5_IB_QPT_REG_UMR)
+ lc = MLX5_IB_LATENCY_CLASS_FAST_PATH;
+
+ uuarn = alloc_uuar(uuari, lc);
+ if (uuarn < 0) {
+ mlx5_ib_dbg(dev, "\n");
+ return -ENOMEM;
+ }
+
+ qp->bf = &uuari->bfs[uuarn];
+ uar_index = qp->bf->uar->index;
+
+ err = calc_sq_size(dev, init_attr, qp);
+ if (err < 0) {
+ mlx5_ib_dbg(dev, "err %d\n", err);
+ goto err_uuar;
+ }
+
+ qp->rq.offset = 0;
+ qp->sq.offset = qp->rq.wqe_cnt << qp->rq.wqe_shift;
+ qp->buf_size = err + (qp->rq.wqe_cnt << qp->rq.wqe_shift);
+
+ err = mlx5_buf_alloc(&dev->mdev, qp->buf_size, PAGE_SIZE * 2, &qp->buf);
+ if (err) {
+ mlx5_ib_dbg(dev, "err %d\n", err);
+ goto err_uuar;
+ }
+
+ qp->sq.qend = mlx5_get_send_wqe(qp, qp->sq.wqe_cnt);
+ *inlen = sizeof(**in) + sizeof(*(*in)->pas) * qp->buf.npages;
+ *in = mlx5_vzalloc(*inlen);
+ if (!*in) {
+ err = -ENOMEM;
+ goto err_buf;
+ }
+ (*in)->ctx.qp_counter_set_usr_page = cpu_to_be32(uar_index);
+ (*in)->ctx.log_pg_sz_remote_qpn = cpu_to_be32((qp->buf.page_shift - PAGE_SHIFT) << 24);
+ /* Set "fast registration enabled" for all kernel QPs */
+ (*in)->ctx.params1 |= cpu_to_be32(1 << 11);
+ (*in)->ctx.sq_crq_size |= cpu_to_be16(1 << 4);
+
+ mlx5_fill_page_array(&qp->buf, (*in)->pas);
+
+ err = mlx5_db_alloc(&dev->mdev, &qp->db);
+ if (err) {
+ mlx5_ib_dbg(dev, "err %d\n", err);
+ goto err_free;
+ }
+
+ qp->db.db[0] = 0;
+ qp->db.db[1] = 0;
+
+ qp->sq.wrid = kmalloc(qp->sq.wqe_cnt * sizeof(*qp->sq.wrid), GFP_KERNEL);
+ qp->sq.wr_data = kmalloc(qp->sq.wqe_cnt * sizeof(*qp->sq.wr_data), GFP_KERNEL);
+ qp->rq.wrid = kmalloc(qp->rq.wqe_cnt * sizeof(*qp->rq.wrid), GFP_KERNEL);
+ qp->sq.w_list = kmalloc(qp->sq.wqe_cnt * sizeof(*qp->sq.w_list), GFP_KERNEL);
+ qp->sq.wqe_head = kmalloc(qp->sq.wqe_cnt * sizeof(*qp->sq.wqe_head), GFP_KERNEL);
+
+ if (!qp->sq.wrid || !qp->sq.wr_data || !qp->rq.wrid ||
+ !qp->sq.w_list || !qp->sq.wqe_head) {
+ err = -ENOMEM;
+ goto err_wrid;
+ }
+ qp->create_type = MLX5_QP_KERNEL;
+
+ return 0;
+
+err_wrid:
+ mlx5_db_free(&dev->mdev, &qp->db);
+ kfree(qp->sq.wqe_head);
+ kfree(qp->sq.w_list);
+ kfree(qp->sq.wrid);
+ kfree(qp->sq.wr_data);
+ kfree(qp->rq.wrid);
+
+err_free:
+ mlx5_vfree(*in);
+
+err_buf:
+ mlx5_buf_free(&dev->mdev, &qp->buf);
+
+err_uuar:
+ free_uuar(&dev->mdev.priv.uuari, uuarn);
+ return err;
+}
+
+static void destroy_qp_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp)
+{
+ mlx5_db_free(&dev->mdev, &qp->db);
+ kfree(qp->sq.wqe_head);
+ kfree(qp->sq.w_list);
+ kfree(qp->sq.wrid);
+ kfree(qp->sq.wr_data);
+ kfree(qp->rq.wrid);
+ mlx5_buf_free(&dev->mdev, &qp->buf);
+ free_uuar(&dev->mdev.priv.uuari, qp->bf->uuarn);
+}
+
+static __be32 get_rx_type(struct mlx5_ib_qp *qp, struct ib_qp_init_attr *attr)
+{
+ if (attr->srq || (attr->qp_type == IB_QPT_XRC_TGT) ||
+ (attr->qp_type == IB_QPT_XRC_INI))
+ return cpu_to_be32(MLX5_SRQ_RQ);
+ else if (!qp->has_rq)
+ return cpu_to_be32(MLX5_ZERO_LEN_RQ);
+ else
+ return cpu_to_be32(MLX5_NON_ZERO_RQ);
+}
+
+static int is_connected(enum ib_qp_type qp_type)
+{
+ if (qp_type == IB_QPT_RC || qp_type == IB_QPT_UC)
+ return 1;
+
+ return 0;
+}
+
+static int create_qp_common(struct mlx5_ib_dev *dev, struct ib_pd *pd,
+ struct ib_qp_init_attr *init_attr,
+ struct ib_udata *udata, struct mlx5_ib_qp *qp)
+{
+ struct mlx5_ib_resources *devr = &dev->devr;
+ struct mlx5_ib_create_qp_resp resp;
+ struct mlx5_create_qp_mbox_in *in;
+ struct mlx5_ib_create_qp ucmd;
+ int inlen = sizeof(*in);
+ int err;
+
+ mutex_init(&qp->mutex);
+ spin_lock_init(&qp->sq.lock);
+ spin_lock_init(&qp->rq.lock);
+
+ if (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR)
+ qp->sq_signal_bits = MLX5_WQE_CTRL_CQ_UPDATE;
+
+ if (pd && pd->uobject) {
+ if (ib_copy_from_udata(&ucmd, udata, sizeof(ucmd))) {
+ mlx5_ib_dbg(dev, "copy failed\n");
+ return -EFAULT;
+ }
+
+ qp->wq_sig = !!(ucmd.flags & MLX5_QP_FLAG_SIGNATURE);
+ qp->scat_cqe = !!(ucmd.flags & MLX5_QP_FLAG_SCATTER_CQE);
+ } else {
+ qp->wq_sig = !!wq_signature;
+ }
+
+ qp->has_rq = qp_has_rq(init_attr);
+ err = set_rq_size(dev, &init_attr->cap, qp->has_rq,
+ qp, (pd && pd->uobject) ? &ucmd : NULL);
+ if (err) {
+ mlx5_ib_dbg(dev, "err %d\n", err);
+ return err;
+ }
+
+ if (pd) {
+ if (pd->uobject) {
+ mlx5_ib_dbg(dev, "requested sq_wqe_count (%d)\n", ucmd.sq_wqe_count);
+ if (ucmd.rq_wqe_shift != qp->rq.wqe_shift ||
+ ucmd.rq_wqe_count != qp->rq.wqe_cnt) {
+ mlx5_ib_dbg(dev, "invalid rq params\n");
+ return -EINVAL;
+ }
+ if (ucmd.sq_wqe_count > dev->mdev.caps.max_wqes) {
+ mlx5_ib_dbg(dev, "requested sq_wqe_count (%d) > max allowed (%d)\n",
+ ucmd.sq_wqe_count, dev->mdev.caps.max_wqes);
+ return -EINVAL;
+ }
+ err = create_user_qp(dev, pd, qp, udata, &in, &resp, &inlen);
+ if (err)
+ mlx5_ib_dbg(dev, "err %d\n", err);
+ } else {
+ err = create_kernel_qp(dev, init_attr, qp, &in, &inlen);
+ if (err)
+ mlx5_ib_dbg(dev, "err %d\n", err);
+ else
+ qp->pa_lkey = to_mpd(pd)->pa_lkey;
+ }
+
+ if (err)
+ return err;
+ } else {
+ in = mlx5_vzalloc(sizeof(*in));
+ if (!in)
+ return -ENOMEM;
+
+ qp->create_type = MLX5_QP_EMPTY;
+ }
+
+ if (is_sqp(init_attr->qp_type))
+ qp->port = init_attr->port_num;
+
+ in->ctx.flags = cpu_to_be32(to_mlx5_st(init_attr->qp_type) << 16 |
+ MLX5_QP_PM_MIGRATED << 11);
+
+ if (init_attr->qp_type != MLX5_IB_QPT_REG_UMR)
+ in->ctx.flags_pd = cpu_to_be32(to_mpd(pd ? pd : devr->p0)->pdn);
+ else
+ in->ctx.flags_pd = cpu_to_be32(MLX5_QP_LAT_SENSITIVE);
+
+ if (qp->wq_sig)
+ in->ctx.flags_pd |= cpu_to_be32(MLX5_QP_ENABLE_SIG);
+
+ if (qp->scat_cqe && is_connected(init_attr->qp_type)) {
+ int rcqe_sz;
+ int scqe_sz;
+
+ rcqe_sz = mlx5_ib_get_cqe_size(dev, init_attr->recv_cq);
+ scqe_sz = mlx5_ib_get_cqe_size(dev, init_attr->send_cq);
+
+ if (rcqe_sz == 128)
+ in->ctx.cs_res = MLX5_RES_SCAT_DATA64_CQE;
+ else
+ in->ctx.cs_res = MLX5_RES_SCAT_DATA32_CQE;
+
+ if (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR) {
+ if (scqe_sz == 128)
+ in->ctx.cs_req = MLX5_REQ_SCAT_DATA64_CQE;
+ else
+ in->ctx.cs_req = MLX5_REQ_SCAT_DATA32_CQE;
+ }
+ }
+
+ if (qp->rq.wqe_cnt) {
+ in->ctx.rq_size_stride = (qp->rq.wqe_shift - 4);
+ in->ctx.rq_size_stride |= ilog2(qp->rq.wqe_cnt) << 3;
+ }
+
+ in->ctx.rq_type_srqn = get_rx_type(qp, init_attr);
+
+ if (qp->sq.wqe_cnt)
+ in->ctx.sq_crq_size |= cpu_to_be16(ilog2(qp->sq.wqe_cnt) << 11);
+ else
+ in->ctx.sq_crq_size |= cpu_to_be16(0x8000);
+
+ /* Set default resources */
+ switch (init_attr->qp_type) {
+ case IB_QPT_XRC_TGT:
+ in->ctx.cqn_recv = cpu_to_be32(to_mcq(devr->c0)->mcq.cqn);
+ in->ctx.cqn_send = cpu_to_be32(to_mcq(devr->c0)->mcq.cqn);
+ in->ctx.rq_type_srqn |= cpu_to_be32(to_msrq(devr->s0)->msrq.srqn);
+ in->ctx.xrcd = cpu_to_be32(to_mxrcd(init_attr->xrcd)->xrcdn);
+ break;
+ case IB_QPT_XRC_INI:
+ in->ctx.cqn_recv = cpu_to_be32(to_mcq(devr->c0)->mcq.cqn);
+ in->ctx.xrcd = cpu_to_be32(to_mxrcd(devr->x1)->xrcdn);
+ in->ctx.rq_type_srqn |= cpu_to_be32(to_msrq(devr->s0)->msrq.srqn);
+ break;
+ default:
+ if (init_attr->srq) {
+ in->ctx.xrcd = cpu_to_be32(to_mxrcd(devr->x0)->xrcdn);
+ in->ctx.rq_type_srqn |= cpu_to_be32(to_msrq(init_attr->srq)->msrq.srqn);
+ } else {
+ in->ctx.xrcd = cpu_to_be32(to_mxrcd(devr->x1)->xrcdn);
+ in->ctx.rq_type_srqn |= cpu_to_be32(to_msrq(devr->s0)->msrq.srqn);
+ }
+ }
+
+ if (init_attr->send_cq)
+ in->ctx.cqn_send = cpu_to_be32(to_mcq(init_attr->send_cq)->mcq.cqn);
+
+ if (init_attr->recv_cq)
+ in->ctx.cqn_recv = cpu_to_be32(to_mcq(init_attr->recv_cq)->mcq.cqn);
+
+ in->ctx.db_rec_addr = cpu_to_be64(qp->db.dma);
+
+ err = mlx5_core_create_qp(&dev->mdev, &qp->mqp, in, inlen);
+ if (err) {
+ mlx5_ib_dbg(dev, "create qp failed\n");
+ goto err_create;
+ }
+
+ mlx5_vfree(in);
+ /* Hardware wants QPN written in big-endian order (after
+ * shifting) for send doorbell. Precompute this value to save
+ * a little bit when posting sends.
+ */
+ qp->doorbell_qpn = swab32(qp->mqp.qpn << 8);
+
+ qp->mqp.event = mlx5_ib_qp_event;
+
+ return 0;
+
+err_create:
+ if (qp->create_type == MLX5_QP_USER)
+ destroy_qp_user(pd, qp);
+ else if (qp->create_type == MLX5_QP_KERNEL)
+ destroy_qp_kernel(dev, qp);
+
+ mlx5_vfree(in);
+ return err;
+}
+
+static void mlx5_ib_lock_cqs(struct mlx5_ib_cq *send_cq, struct mlx5_ib_cq *recv_cq)
+ __acquires(&send_cq->lock) __acquires(&recv_cq->lock)
+{
+ if (send_cq) {
+ if (recv_cq) {
+ if (send_cq->mcq.cqn < recv_cq->mcq.cqn) {
+ spin_lock_irq(&send_cq->lock);
+ spin_lock_nested(&recv_cq->lock,
+ SINGLE_DEPTH_NESTING);
+ } else if (send_cq->mcq.cqn == recv_cq->mcq.cqn) {
+ spin_lock_irq(&send_cq->lock);
+ __acquire(&recv_cq->lock);
+ } else {
+ spin_lock_irq(&recv_cq->lock);
+ spin_lock_nested(&send_cq->lock,
+ SINGLE_DEPTH_NESTING);
+ }
+ } else {
+ spin_lock_irq(&send_cq->lock);
+ }
+ } else if (recv_cq) {
+ spin_lock_irq(&recv_cq->lock);
+ }
+}
+
+static void mlx5_ib_unlock_cqs(struct mlx5_ib_cq *send_cq, struct mlx5_ib_cq *recv_cq)
+ __releases(&send_cq->lock) __releases(&recv_cq->lock)
+{
+ if (send_cq) {
+ if (recv_cq) {
+ if (send_cq->mcq.cqn < recv_cq->mcq.cqn) {
+ spin_unlock(&recv_cq->lock);
+ spin_unlock_irq(&send_cq->lock);
+ } else if (send_cq->mcq.cqn == recv_cq->mcq.cqn) {
+ __release(&recv_cq->lock);
+ spin_unlock_irq(&send_cq->lock);
+ } else {
+ spin_unlock(&send_cq->lock);
+ spin_unlock_irq(&recv_cq->lock);
+ }
+ } else {
+ spin_unlock_irq(&send_cq->lock);
+ }
+ } else if (recv_cq) {
+ spin_unlock_irq(&recv_cq->lock);
+ }
+}
+
+static struct mlx5_ib_pd *get_pd(struct mlx5_ib_qp *qp)
+{
+ return to_mpd(qp->ibqp.pd);
+}
+
+static void get_cqs(struct mlx5_ib_qp *qp,
+ struct mlx5_ib_cq **send_cq, struct mlx5_ib_cq **recv_cq)
+{
+ switch (qp->ibqp.qp_type) {
+ case IB_QPT_XRC_TGT:
+ *send_cq = NULL;
+ *recv_cq = NULL;
+ break;
+ case MLX5_IB_QPT_REG_UMR:
+ case IB_QPT_XRC_INI:
+ *send_cq = to_mcq(qp->ibqp.send_cq);
+ *recv_cq = NULL;
+ break;
+
+ case IB_QPT_SMI:
+ case IB_QPT_GSI:
+ case IB_QPT_RC:
+ case IB_QPT_UC:
+ case IB_QPT_UD:
+ case IB_QPT_RAW_IPV6:
+ case IB_QPT_RAW_ETHERTYPE:
+ *send_cq = to_mcq(qp->ibqp.send_cq);
+ *recv_cq = to_mcq(qp->ibqp.recv_cq);
+ break;
+
+ case IB_QPT_RAW_PACKET:
+ case IB_QPT_MAX:
+ default:
+ *send_cq = NULL;
+ *recv_cq = NULL;
+ break;
+ }
+}
+
+static void destroy_qp_common(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp)
+{
+ struct mlx5_ib_cq *send_cq, *recv_cq;
+ struct mlx5_modify_qp_mbox_in *in;
+ int err;
+
+ in = kzalloc(sizeof(*in), GFP_KERNEL);
+ if (!in)
+ return;
+ if (qp->state != IB_QPS_RESET)
+ if (mlx5_core_qp_modify(&dev->mdev, to_mlx5_state(qp->state),
+ MLX5_QP_STATE_RST, in, sizeof(*in), &qp->mqp))
+ mlx5_ib_warn(dev, "mlx5_ib: modify QP %06x to RESET failed\n",
+ qp->mqp.qpn);
+
+ get_cqs(qp, &send_cq, &recv_cq);
+
+ if (qp->create_type == MLX5_QP_KERNEL) {
+ mlx5_ib_lock_cqs(send_cq, recv_cq);
+ __mlx5_ib_cq_clean(recv_cq, qp->mqp.qpn,
+ qp->ibqp.srq ? to_msrq(qp->ibqp.srq) : NULL);
+ if (send_cq != recv_cq)
+ __mlx5_ib_cq_clean(send_cq, qp->mqp.qpn, NULL);
+ mlx5_ib_unlock_cqs(send_cq, recv_cq);
+ }
+
+ err = mlx5_core_destroy_qp(&dev->mdev, &qp->mqp);
+ if (err)
+ mlx5_ib_warn(dev, "failed to destroy QP 0x%x\n", qp->mqp.qpn);
+ kfree(in);
+
+
+ if (qp->create_type == MLX5_QP_KERNEL)
+ destroy_qp_kernel(dev, qp);
+ else if (qp->create_type == MLX5_QP_USER)
+ destroy_qp_user(&get_pd(qp)->ibpd, qp);
+}
+
+static const char *ib_qp_type_str(enum ib_qp_type type)
+{
+ switch (type) {
+ case IB_QPT_SMI:
+ return "IB_QPT_SMI";
+ case IB_QPT_GSI:
+ return "IB_QPT_GSI";
+ case IB_QPT_RC:
+ return "IB_QPT_RC";
+ case IB_QPT_UC:
+ return "IB_QPT_UC";
+ case IB_QPT_UD:
+ return "IB_QPT_UD";
+ case IB_QPT_RAW_IPV6:
+ return "IB_QPT_RAW_IPV6";
+ case IB_QPT_RAW_ETHERTYPE:
+ return "IB_QPT_RAW_ETHERTYPE";
+ case IB_QPT_XRC_INI:
+ return "IB_QPT_XRC_INI";
+ case IB_QPT_XRC_TGT:
+ return "IB_QPT_XRC_TGT";
+ case IB_QPT_RAW_PACKET:
+ return "IB_QPT_RAW_PACKET";
+ case MLX5_IB_QPT_REG_UMR:
+ return "MLX5_IB_QPT_REG_UMR";
+ case IB_QPT_MAX:
+ default:
+ return "Invalid QP type";
+ }
+}
+
+struct ib_qp *mlx5_ib_create_qp(struct ib_pd *pd,
+ struct ib_qp_init_attr *init_attr,
+ struct ib_udata *udata)
+{
+ struct mlx5_ib_dev *dev;
+ struct mlx5_ib_qp *qp;
+ u16 xrcdn = 0;
+ int err;
+
+ if (pd) {
+ dev = to_mdev(pd->device);
+ } else {
+ /* being cautious here */
+ if (init_attr->qp_type != IB_QPT_XRC_TGT &&
+ init_attr->qp_type != MLX5_IB_QPT_REG_UMR) {
+ pr_warn("%s: no PD for transport %s\n", __func__,
+ ib_qp_type_str(init_attr->qp_type));
+ return ERR_PTR(-EINVAL);
+ }
+ dev = to_mdev(to_mxrcd(init_attr->xrcd)->ibxrcd.device);
+ }
+
+ switch (init_attr->qp_type) {
+ case IB_QPT_XRC_TGT:
+ case IB_QPT_XRC_INI:
+ if (!(dev->mdev.caps.flags & MLX5_DEV_CAP_FLAG_XRC)) {
+ mlx5_ib_dbg(dev, "XRC not supported\n");
+ return ERR_PTR(-ENOSYS);
+ }
+ init_attr->recv_cq = NULL;
+ if (init_attr->qp_type == IB_QPT_XRC_TGT) {
+ xrcdn = to_mxrcd(init_attr->xrcd)->xrcdn;
+ init_attr->send_cq = NULL;
+ }
+
+ /* fall through */
+ case IB_QPT_RC:
+ case IB_QPT_UC:
+ case IB_QPT_UD:
+ case IB_QPT_SMI:
+ case IB_QPT_GSI:
+ case MLX5_IB_QPT_REG_UMR:
+ qp = kzalloc(sizeof(*qp), GFP_KERNEL);
+ if (!qp)
+ return ERR_PTR(-ENOMEM);
+
+ err = create_qp_common(dev, pd, init_attr, udata, qp);
+ if (err) {
+ mlx5_ib_dbg(dev, "create_qp_common failed\n");
+ kfree(qp);
+ return ERR_PTR(err);
+ }
+
+ if (is_qp0(init_attr->qp_type))
+ qp->ibqp.qp_num = 0;
+ else if (is_qp1(init_attr->qp_type))
+ qp->ibqp.qp_num = 1;
+ else
+ qp->ibqp.qp_num = qp->mqp.qpn;
+
+ mlx5_ib_dbg(dev, "ib qpnum 0x%x, mlx qpn 0x%x, rcqn 0x%x, scqn 0x%x\n",
+ qp->ibqp.qp_num, qp->mqp.qpn, to_mcq(init_attr->recv_cq)->mcq.cqn,
+ to_mcq(init_attr->send_cq)->mcq.cqn);
+
+ qp->xrcdn = xrcdn;
+
+ break;
+
+ case IB_QPT_RAW_IPV6:
+ case IB_QPT_RAW_ETHERTYPE:
+ case IB_QPT_RAW_PACKET:
+ case IB_QPT_MAX:
+ default:
+ mlx5_ib_dbg(dev, "unsupported qp type %d\n",
+ init_attr->qp_type);
+ /* Don't support raw QPs */
+ return ERR_PTR(-EINVAL);
+ }
+
+ return &qp->ibqp;
+}
+
+int mlx5_ib_destroy_qp(struct ib_qp *qp)
+{
+ struct mlx5_ib_dev *dev = to_mdev(qp->device);
+ struct mlx5_ib_qp *mqp = to_mqp(qp);
+
+ destroy_qp_common(dev, mqp);
+
+ kfree(mqp);
+
+ return 0;
+}
+
+static __be32 to_mlx5_access_flags(struct mlx5_ib_qp *qp, const struct ib_qp_attr *attr,
+ int attr_mask)
+{
+ u32 hw_access_flags = 0;
+ u8 dest_rd_atomic;
+ u32 access_flags;
+
+ if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)
+ dest_rd_atomic = attr->max_dest_rd_atomic;
+ else
+ dest_rd_atomic = qp->resp_depth;
+
+ if (attr_mask & IB_QP_ACCESS_FLAGS)
+ access_flags = attr->qp_access_flags;
+ else
+ access_flags = qp->atomic_rd_en;
+
+ if (!dest_rd_atomic)
+ access_flags &= IB_ACCESS_REMOTE_WRITE;
+
+ if (access_flags & IB_ACCESS_REMOTE_READ)
+ hw_access_flags |= MLX5_QP_BIT_RRE;
+ if (access_flags & IB_ACCESS_REMOTE_ATOMIC)
+ hw_access_flags |= (MLX5_QP_BIT_RAE | MLX5_ATOMIC_MODE_CX);
+ if (access_flags & IB_ACCESS_REMOTE_WRITE)
+ hw_access_flags |= MLX5_QP_BIT_RWE;
+
+ return cpu_to_be32(hw_access_flags);
+}
+
+enum {
+ MLX5_PATH_FLAG_FL = 1 << 0,
+ MLX5_PATH_FLAG_FREE_AR = 1 << 1,
+ MLX5_PATH_FLAG_COUNTER = 1 << 2,
+};
+
+static int ib_rate_to_mlx5(struct mlx5_ib_dev *dev, u8 rate)
+{
+ if (rate == IB_RATE_PORT_CURRENT) {
+ return 0;
+ } else if (rate < IB_RATE_2_5_GBPS || rate > IB_RATE_300_GBPS) {
+ return -EINVAL;
+ } else {
+ while (rate != IB_RATE_2_5_GBPS &&
+ !(1 << (rate + MLX5_STAT_RATE_OFFSET) &
+ dev->mdev.caps.stat_rate_support))
+ --rate;
+ }
+
+ return rate + MLX5_STAT_RATE_OFFSET;
+}
+
+static int mlx5_set_path(struct mlx5_ib_dev *dev, const struct ib_ah_attr *ah,
+ struct mlx5_qp_path *path, u8 port, int attr_mask,
+ u32 path_flags, const struct ib_qp_attr *attr)
+{
+ int err;
+
+ path->fl = (path_flags & MLX5_PATH_FLAG_FL) ? 0x80 : 0;
+ path->free_ar = (path_flags & MLX5_PATH_FLAG_FREE_AR) ? 0x80 : 0;
+
+ if (attr_mask & IB_QP_PKEY_INDEX)
+ path->pkey_index = attr->pkey_index;
+
+ path->grh_mlid = ah->src_path_bits & 0x7f;
+ path->rlid = cpu_to_be16(ah->dlid);
+
+ if (ah->ah_flags & IB_AH_GRH) {
+ path->grh_mlid |= 1 << 7;
+ path->mgid_index = ah->grh.sgid_index;
+ path->hop_limit = ah->grh.hop_limit;
+ path->tclass_flowlabel =
+ cpu_to_be32((ah->grh.traffic_class << 20) |
+ (ah->grh.flow_label));
+ memcpy(path->rgid, ah->grh.dgid.raw, 16);
+ }
+
+ err = ib_rate_to_mlx5(dev, ah->static_rate);
+ if (err < 0)
+ return err;
+ path->static_rate = err;
+ path->port = port;
+
+ if (ah->ah_flags & IB_AH_GRH) {
+ if (ah->grh.sgid_index >= dev->mdev.caps.port[port - 1].gid_table_len) {
+ pr_err(KERN_ERR "sgid_index (%u) too large. max is %d\n",
+ ah->grh.sgid_index, dev->mdev.caps.port[port - 1].gid_table_len);
+ return -EINVAL;
+ }
+
+ path->grh_mlid |= 1 << 7;
+ path->mgid_index = ah->grh.sgid_index;
+ path->hop_limit = ah->grh.hop_limit;
+ path->tclass_flowlabel =
+ cpu_to_be32((ah->grh.traffic_class << 20) |
+ (ah->grh.flow_label));
+ memcpy(path->rgid, ah->grh.dgid.raw, 16);
+ }
+
+ if (attr_mask & IB_QP_TIMEOUT)
+ path->ackto_lt = attr->timeout << 3;
+
+ path->sl = ah->sl & 0xf;
+
+ return 0;
+}
+
+static enum mlx5_qp_optpar opt_mask[MLX5_QP_NUM_STATE][MLX5_QP_NUM_STATE][MLX5_QP_ST_MAX] = {
+ [MLX5_QP_STATE_INIT] = {
+ [MLX5_QP_STATE_INIT] = {
+ [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_RRE |
+ MLX5_QP_OPTPAR_RAE |
+ MLX5_QP_OPTPAR_RWE |
+ MLX5_QP_OPTPAR_PKEY_INDEX |
+ MLX5_QP_OPTPAR_PRI_PORT,
+ [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_RWE |
+ MLX5_QP_OPTPAR_PKEY_INDEX |
+ MLX5_QP_OPTPAR_PRI_PORT,
+ [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_PKEY_INDEX |
+ MLX5_QP_OPTPAR_Q_KEY |
+ MLX5_QP_OPTPAR_PRI_PORT,
+ },
+ [MLX5_QP_STATE_RTR] = {
+ [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH |
+ MLX5_QP_OPTPAR_RRE |
+ MLX5_QP_OPTPAR_RAE |
+ MLX5_QP_OPTPAR_RWE |
+ MLX5_QP_OPTPAR_PKEY_INDEX,
+ [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH |
+ MLX5_QP_OPTPAR_RWE |
+ MLX5_QP_OPTPAR_PKEY_INDEX,
+ [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_PKEY_INDEX |
+ MLX5_QP_OPTPAR_Q_KEY,
+ [MLX5_QP_ST_MLX] = MLX5_QP_OPTPAR_PKEY_INDEX |
+ MLX5_QP_OPTPAR_Q_KEY,
+ },
+ },
+ [MLX5_QP_STATE_RTR] = {
+ [MLX5_QP_STATE_RTS] = {
+ [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH |
+ MLX5_QP_OPTPAR_RRE |
+ MLX5_QP_OPTPAR_RAE |
+ MLX5_QP_OPTPAR_RWE |
+ MLX5_QP_OPTPAR_PM_STATE |
+ MLX5_QP_OPTPAR_RNR_TIMEOUT,
+ [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH |
+ MLX5_QP_OPTPAR_RWE |
+ MLX5_QP_OPTPAR_PM_STATE,
+ [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_Q_KEY,
+ },
+ },
+ [MLX5_QP_STATE_RTS] = {
+ [MLX5_QP_STATE_RTS] = {
+ [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_RRE |
+ MLX5_QP_OPTPAR_RAE |
+ MLX5_QP_OPTPAR_RWE |
+ MLX5_QP_OPTPAR_RNR_TIMEOUT |
+ MLX5_QP_OPTPAR_PM_STATE,
+ [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_RWE |
+ MLX5_QP_OPTPAR_PM_STATE,
+ [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_Q_KEY |
+ MLX5_QP_OPTPAR_SRQN |
+ MLX5_QP_OPTPAR_CQN_RCV,
+ },
+ },
+ [MLX5_QP_STATE_SQER] = {
+ [MLX5_QP_STATE_RTS] = {
+ [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_Q_KEY,
+ [MLX5_QP_ST_MLX] = MLX5_QP_OPTPAR_Q_KEY,
+ },
+ },
+};
+
+static int ib_nr_to_mlx5_nr(int ib_mask)
+{
+ switch (ib_mask) {
+ case IB_QP_STATE:
+ return 0;
+ case IB_QP_CUR_STATE:
+ return 0;
+ case IB_QP_EN_SQD_ASYNC_NOTIFY:
+ return 0;
+ case IB_QP_ACCESS_FLAGS:
+ return MLX5_QP_OPTPAR_RWE | MLX5_QP_OPTPAR_RRE |
+ MLX5_QP_OPTPAR_RAE;
+ case IB_QP_PKEY_INDEX:
+ return MLX5_QP_OPTPAR_PKEY_INDEX;
+ case IB_QP_PORT:
+ return MLX5_QP_OPTPAR_PRI_PORT;
+ case IB_QP_QKEY:
+ return MLX5_QP_OPTPAR_Q_KEY;
+ case IB_QP_AV:
+ return MLX5_QP_OPTPAR_PRIMARY_ADDR_PATH |
+ MLX5_QP_OPTPAR_PRI_PORT;
+ case IB_QP_PATH_MTU:
+ return 0;
+ case IB_QP_TIMEOUT:
+ return MLX5_QP_OPTPAR_ACK_TIMEOUT;
+ case IB_QP_RETRY_CNT:
+ return MLX5_QP_OPTPAR_RETRY_COUNT;
+ case IB_QP_RNR_RETRY:
+ return MLX5_QP_OPTPAR_RNR_RETRY;
+ case IB_QP_RQ_PSN:
+ return 0;
+ case IB_QP_MAX_QP_RD_ATOMIC:
+ return MLX5_QP_OPTPAR_SRA_MAX;
+ case IB_QP_ALT_PATH:
+ return MLX5_QP_OPTPAR_ALT_ADDR_PATH;
+ case IB_QP_MIN_RNR_TIMER:
+ return MLX5_QP_OPTPAR_RNR_TIMEOUT;
+ case IB_QP_SQ_PSN:
+ return 0;
+ case IB_QP_MAX_DEST_RD_ATOMIC:
+ return MLX5_QP_OPTPAR_RRA_MAX | MLX5_QP_OPTPAR_RWE |
+ MLX5_QP_OPTPAR_RRE | MLX5_QP_OPTPAR_RAE;
+ case IB_QP_PATH_MIG_STATE:
+ return MLX5_QP_OPTPAR_PM_STATE;
+ case IB_QP_CAP:
+ return 0;
+ case IB_QP_DEST_QPN:
+ return 0;
+ }
+ return 0;
+}
+
+static int ib_mask_to_mlx5_opt(int ib_mask)
+{
+ int result = 0;
+ int i;
+
+ for (i = 0; i < 8 * sizeof(int); i++) {
+ if ((1 << i) & ib_mask)
+ result |= ib_nr_to_mlx5_nr(1 << i);
+ }
+
+ return result;
+}
+
+static int __mlx5_ib_modify_qp(struct ib_qp *ibqp,
+ const struct ib_qp_attr *attr, int attr_mask,
+ enum ib_qp_state cur_state, enum ib_qp_state new_state)
+{
+ struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
+ struct mlx5_ib_qp *qp = to_mqp(ibqp);
+ struct mlx5_ib_cq *send_cq, *recv_cq;
+ struct mlx5_qp_context *context;
+ struct mlx5_modify_qp_mbox_in *in;
+ struct mlx5_ib_pd *pd;
+ enum mlx5_qp_state mlx5_cur, mlx5_new;
+ enum mlx5_qp_optpar optpar;
+ int sqd_event;
+ int mlx5_st;
+ int err;
+
+ in = kzalloc(sizeof(*in), GFP_KERNEL);
+ if (!in)
+ return -ENOMEM;
+
+ context = &in->ctx;
+ err = to_mlx5_st(ibqp->qp_type);
+ if (err < 0)
+ goto out;
+
+ context->flags = cpu_to_be32(err << 16);
+
+ if (!(attr_mask & IB_QP_PATH_MIG_STATE)) {
+ context->flags |= cpu_to_be32(MLX5_QP_PM_MIGRATED << 11);
+ } else {
+ switch (attr->path_mig_state) {
+ case IB_MIG_MIGRATED:
+ context->flags |= cpu_to_be32(MLX5_QP_PM_MIGRATED << 11);
+ break;
+ case IB_MIG_REARM:
+ context->flags |= cpu_to_be32(MLX5_QP_PM_REARM << 11);
+ break;
+ case IB_MIG_ARMED:
+ context->flags |= cpu_to_be32(MLX5_QP_PM_ARMED << 11);
+ break;
+ }
+ }
+
+ if (ibqp->qp_type == IB_QPT_GSI || ibqp->qp_type == IB_QPT_SMI) {
+ context->mtu_msgmax = (IB_MTU_256 << 5) | 8;
+ } else if (ibqp->qp_type == IB_QPT_UD ||
+ ibqp->qp_type == MLX5_IB_QPT_REG_UMR) {
+ context->mtu_msgmax = (IB_MTU_4096 << 5) | 12;
+ } else if (attr_mask & IB_QP_PATH_MTU) {
+ if (attr->path_mtu < IB_MTU_256 ||
+ attr->path_mtu > IB_MTU_4096) {
+ mlx5_ib_warn(dev, "invalid mtu %d\n", attr->path_mtu);
+ err = -EINVAL;
+ goto out;
+ }
+ context->mtu_msgmax = (attr->path_mtu << 5) | dev->mdev.caps.log_max_msg;
+ }
+
+ if (attr_mask & IB_QP_DEST_QPN)
+ context->log_pg_sz_remote_qpn = cpu_to_be32(attr->dest_qp_num);
+
+ if (attr_mask & IB_QP_PKEY_INDEX)
+ context->pri_path.pkey_index = attr->pkey_index;
+
+ /* todo implement counter_index functionality */
+
+ if (is_sqp(ibqp->qp_type))
+ context->pri_path.port = qp->port;
+
+ if (attr_mask & IB_QP_PORT)
+ context->pri_path.port = attr->port_num;
+
+ if (attr_mask & IB_QP_AV) {
+ err = mlx5_set_path(dev, &attr->ah_attr, &context->pri_path,
+ attr_mask & IB_QP_PORT ? attr->port_num : qp->port,
+ attr_mask, 0, attr);
+ if (err)
+ goto out;
+ }
+
+ if (attr_mask & IB_QP_TIMEOUT)
+ context->pri_path.ackto_lt |= attr->timeout << 3;
+
+ if (attr_mask & IB_QP_ALT_PATH) {
+ err = mlx5_set_path(dev, &attr->alt_ah_attr, &context->alt_path,
+ attr->alt_port_num, attr_mask, 0, attr);
+ if (err)
+ goto out;
+ }
+
+ pd = get_pd(qp);
+ get_cqs(qp, &send_cq, &recv_cq);
+
+ context->flags_pd = cpu_to_be32(pd ? pd->pdn : to_mpd(dev->devr.p0)->pdn);
+ context->cqn_send = send_cq ? cpu_to_be32(send_cq->mcq.cqn) : 0;
+ context->cqn_recv = recv_cq ? cpu_to_be32(recv_cq->mcq.cqn) : 0;
+ context->params1 = cpu_to_be32(MLX5_IB_ACK_REQ_FREQ << 28);
+
+ if (attr_mask & IB_QP_RNR_RETRY)
+ context->params1 |= cpu_to_be32(attr->rnr_retry << 13);
+
+ if (attr_mask & IB_QP_RETRY_CNT)
+ context->params1 |= cpu_to_be32(attr->retry_cnt << 16);
+
+ if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) {
+ if (attr->max_rd_atomic)
+ context->params1 |=
+ cpu_to_be32(fls(attr->max_rd_atomic - 1) << 21);
+ }
+
+ if (attr_mask & IB_QP_SQ_PSN)
+ context->next_send_psn = cpu_to_be32(attr->sq_psn);
+
+ if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) {
+ if (attr->max_dest_rd_atomic)
+ context->params2 |=
+ cpu_to_be32(fls(attr->max_dest_rd_atomic - 1) << 21);
+ }
+
+ if (attr_mask & (IB_QP_ACCESS_FLAGS | IB_QP_MAX_DEST_RD_ATOMIC))
+ context->params2 |= to_mlx5_access_flags(qp, attr, attr_mask);
+
+ if (attr_mask & IB_QP_MIN_RNR_TIMER)
+ context->rnr_nextrecvpsn |= cpu_to_be32(attr->min_rnr_timer << 24);
+
+ if (attr_mask & IB_QP_RQ_PSN)
+ context->rnr_nextrecvpsn |= cpu_to_be32(attr->rq_psn);
+
+ if (attr_mask & IB_QP_QKEY)
+ context->qkey = cpu_to_be32(attr->qkey);
+
+ if (qp->rq.wqe_cnt && cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT)
+ context->db_rec_addr = cpu_to_be64(qp->db.dma);
+
+ if (cur_state == IB_QPS_RTS && new_state == IB_QPS_SQD &&
+ attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY && attr->en_sqd_async_notify)
+ sqd_event = 1;
+ else
+ sqd_event = 0;
+
+ if (!ibqp->uobject && cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT)
+ context->sq_crq_size |= cpu_to_be16(1 << 4);
+
+
+ mlx5_cur = to_mlx5_state(cur_state);
+ mlx5_new = to_mlx5_state(new_state);
+ mlx5_st = to_mlx5_st(ibqp->qp_type);
+ if (mlx5_cur < 0 || mlx5_new < 0 || mlx5_st < 0)
+ goto out;
+
+ optpar = ib_mask_to_mlx5_opt(attr_mask);
+ optpar &= opt_mask[mlx5_cur][mlx5_new][mlx5_st];
+ in->optparam = cpu_to_be32(optpar);
+ err = mlx5_core_qp_modify(&dev->mdev, to_mlx5_state(cur_state),
+ to_mlx5_state(new_state), in, sqd_event,
+ &qp->mqp);
+ if (err)
+ goto out;
+
+ qp->state = new_state;
+
+ if (attr_mask & IB_QP_ACCESS_FLAGS)
+ qp->atomic_rd_en = attr->qp_access_flags;
+ if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)
+ qp->resp_depth = attr->max_dest_rd_atomic;
+ if (attr_mask & IB_QP_PORT)
+ qp->port = attr->port_num;
+ if (attr_mask & IB_QP_ALT_PATH)
+ qp->alt_port = attr->alt_port_num;
+
+ /*
+ * If we moved a kernel QP to RESET, clean up all old CQ
+ * entries and reinitialize the QP.
+ */
+ if (new_state == IB_QPS_RESET && !ibqp->uobject) {
+ mlx5_ib_cq_clean(recv_cq, qp->mqp.qpn,
+ ibqp->srq ? to_msrq(ibqp->srq) : NULL);
+ if (send_cq != recv_cq)
+ mlx5_ib_cq_clean(send_cq, qp->mqp.qpn, NULL);
+
+ qp->rq.head = 0;
+ qp->rq.tail = 0;
+ qp->sq.head = 0;
+ qp->sq.tail = 0;
+ qp->sq.cur_post = 0;
+ qp->sq.last_poll = 0;
+ qp->db.db[MLX5_RCV_DBR] = 0;
+ qp->db.db[MLX5_SND_DBR] = 0;
+ }
+
+out:
+ kfree(in);
+ return err;
+}
+
+int mlx5_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
+ int attr_mask, struct ib_udata *udata)
+{
+ struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
+ struct mlx5_ib_qp *qp = to_mqp(ibqp);
+ enum ib_qp_state cur_state, new_state;
+ int err = -EINVAL;
+ int port;
+
+ mutex_lock(&qp->mutex);
+
+ cur_state = attr_mask & IB_QP_CUR_STATE ? attr->cur_qp_state : qp->state;
+ new_state = attr_mask & IB_QP_STATE ? attr->qp_state : cur_state;
+
+ if (ibqp->qp_type != MLX5_IB_QPT_REG_UMR &&
+ !ib_modify_qp_is_ok(cur_state, new_state, ibqp->qp_type, attr_mask))
+ goto out;
+
+ if ((attr_mask & IB_QP_PORT) &&
+ (attr->port_num == 0 || attr->port_num > dev->mdev.caps.num_ports))
+ goto out;
+
+ if (attr_mask & IB_QP_PKEY_INDEX) {
+ port = attr_mask & IB_QP_PORT ? attr->port_num : qp->port;
+ if (attr->pkey_index >= dev->mdev.caps.port[port - 1].pkey_table_len)
+ goto out;
+ }
+
+ if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC &&
+ attr->max_rd_atomic > dev->mdev.caps.max_ra_res_qp)
+ goto out;
+
+ if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC &&
+ attr->max_dest_rd_atomic > dev->mdev.caps.max_ra_req_qp)
+ goto out;
+
+ if (cur_state == new_state && cur_state == IB_QPS_RESET) {
+ err = 0;
+ goto out;
+ }
+
+ err = __mlx5_ib_modify_qp(ibqp, attr, attr_mask, cur_state, new_state);
+
+out:
+ mutex_unlock(&qp->mutex);
+ return err;
+}
+
+static int mlx5_wq_overflow(struct mlx5_ib_wq *wq, int nreq, struct ib_cq *ib_cq)
+{
+ struct mlx5_ib_cq *cq;
+ unsigned cur;
+
+ cur = wq->head - wq->tail;
+ if (likely(cur + nreq < wq->max_post))
+ return 0;
+
+ cq = to_mcq(ib_cq);
+ spin_lock(&cq->lock);
+ cur = wq->head - wq->tail;
+ spin_unlock(&cq->lock);
+
+ return cur + nreq >= wq->max_post;
+}
+
+static __always_inline void set_raddr_seg(struct mlx5_wqe_raddr_seg *rseg,
+ u64 remote_addr, u32 rkey)
+{
+ rseg->raddr = cpu_to_be64(remote_addr);
+ rseg->rkey = cpu_to_be32(rkey);
+ rseg->reserved = 0;
+}
+
+static void set_atomic_seg(struct mlx5_wqe_atomic_seg *aseg, struct ib_send_wr *wr)
+{
+ if (wr->opcode == IB_WR_ATOMIC_CMP_AND_SWP) {
+ aseg->swap_add = cpu_to_be64(wr->wr.atomic.swap);
+ aseg->compare = cpu_to_be64(wr->wr.atomic.compare_add);
+ } else if (wr->opcode == IB_WR_MASKED_ATOMIC_FETCH_AND_ADD) {
+ aseg->swap_add = cpu_to_be64(wr->wr.atomic.compare_add);
+ aseg->compare = cpu_to_be64(wr->wr.atomic.compare_add_mask);
+ } else {
+ aseg->swap_add = cpu_to_be64(wr->wr.atomic.compare_add);
+ aseg->compare = 0;
+ }
+}
+
+static void set_masked_atomic_seg(struct mlx5_wqe_masked_atomic_seg *aseg,
+ struct ib_send_wr *wr)
+{
+ aseg->swap_add = cpu_to_be64(wr->wr.atomic.swap);
+ aseg->swap_add_mask = cpu_to_be64(wr->wr.atomic.swap_mask);
+ aseg->compare = cpu_to_be64(wr->wr.atomic.compare_add);
+ aseg->compare_mask = cpu_to_be64(wr->wr.atomic.compare_add_mask);
+}
+
+static void set_datagram_seg(struct mlx5_wqe_datagram_seg *dseg,
+ struct ib_send_wr *wr)
+{
+ memcpy(&dseg->av, &to_mah(wr->wr.ud.ah)->av, sizeof(struct mlx5_av));
+ dseg->av.dqp_dct = cpu_to_be32(wr->wr.ud.remote_qpn | MLX5_EXTENDED_UD_AV);
+ dseg->av.key.qkey.qkey = cpu_to_be32(wr->wr.ud.remote_qkey);
+}
+
+static void set_data_ptr_seg(struct mlx5_wqe_data_seg *dseg, struct ib_sge *sg)
+{
+ dseg->byte_count = cpu_to_be32(sg->length);
+ dseg->lkey = cpu_to_be32(sg->lkey);
+ dseg->addr = cpu_to_be64(sg->addr);
+}
+
+static __be16 get_klm_octo(int npages)
+{
+ return cpu_to_be16(ALIGN(npages, 8) / 2);
+}
+
+static __be64 frwr_mkey_mask(void)
+{
+ u64 result;
+
+ result = MLX5_MKEY_MASK_LEN |
+ MLX5_MKEY_MASK_PAGE_SIZE |
+ MLX5_MKEY_MASK_START_ADDR |
+ MLX5_MKEY_MASK_EN_RINVAL |
+ MLX5_MKEY_MASK_KEY |
+ MLX5_MKEY_MASK_LR |
+ MLX5_MKEY_MASK_LW |
+ MLX5_MKEY_MASK_RR |
+ MLX5_MKEY_MASK_RW |
+ MLX5_MKEY_MASK_A |
+ MLX5_MKEY_MASK_SMALL_FENCE |
+ MLX5_MKEY_MASK_FREE;
+
+ return cpu_to_be64(result);
+}
+
+static void set_frwr_umr_segment(struct mlx5_wqe_umr_ctrl_seg *umr,
+ struct ib_send_wr *wr, int li)
+{
+ memset(umr, 0, sizeof(*umr));
+
+ if (li) {
+ umr->mkey_mask = cpu_to_be64(MLX5_MKEY_MASK_FREE);
+ umr->flags = 1 << 7;
+ return;
+ }
+
+ umr->flags = (1 << 5); /* fail if not free */
+ umr->klm_octowords = get_klm_octo(wr->wr.fast_reg.page_list_len);
+ umr->mkey_mask = frwr_mkey_mask();
+}
+
+static void set_reg_umr_segment(struct mlx5_wqe_umr_ctrl_seg *umr,
+ struct ib_send_wr *wr)
+{
+ struct umr_wr *umrwr = (struct umr_wr *)&wr->wr.fast_reg;
+ u64 mask;
+
+ memset(umr, 0, sizeof(*umr));
+
+ if (!(wr->send_flags & MLX5_IB_SEND_UMR_UNREG)) {
+ umr->flags = 1 << 5; /* fail if not free */
+ umr->klm_octowords = get_klm_octo(umrwr->npages);
+ mask = MLX5_MKEY_MASK_LEN |
+ MLX5_MKEY_MASK_PAGE_SIZE |
+ MLX5_MKEY_MASK_START_ADDR |
+ MLX5_MKEY_MASK_PD |
+ MLX5_MKEY_MASK_LR |
+ MLX5_MKEY_MASK_LW |
+ MLX5_MKEY_MASK_RR |
+ MLX5_MKEY_MASK_RW |
+ MLX5_MKEY_MASK_A |
+ MLX5_MKEY_MASK_FREE;
+ umr->mkey_mask = cpu_to_be64(mask);
+ } else {
+ umr->flags = 2 << 5; /* fail if free */
+ mask = MLX5_MKEY_MASK_FREE;
+ umr->mkey_mask = cpu_to_be64(mask);
+ }
+
+ if (!wr->num_sge)
+ umr->flags |= (1 << 7); /* inline */
+}
+
+static u8 get_umr_flags(int acc)
+{
+ return (acc & IB_ACCESS_REMOTE_ATOMIC ? MLX5_PERM_ATOMIC : 0) |
+ (acc & IB_ACCESS_REMOTE_WRITE ? MLX5_PERM_REMOTE_WRITE : 0) |
+ (acc & IB_ACCESS_REMOTE_READ ? MLX5_PERM_REMOTE_READ : 0) |
+ (acc & IB_ACCESS_LOCAL_WRITE ? MLX5_PERM_LOCAL_WRITE : 0) |
+ MLX5_PERM_LOCAL_READ | MLX5_PERM_UMR_EN | MLX5_ACCESS_MODE_MTT;
+}
+
+static void set_mkey_segment(struct mlx5_mkey_seg *seg, struct ib_send_wr *wr,
+ int li, int *writ)
+{
+ memset(seg, 0, sizeof(*seg));
+ if (li) {
+ seg->status = 1 << 6;
+ return;
+ }
+
+ seg->flags = get_umr_flags(wr->wr.fast_reg.access_flags);
+ *writ = seg->flags & (MLX5_PERM_LOCAL_WRITE | IB_ACCESS_REMOTE_WRITE);
+ seg->qpn_mkey7_0 = cpu_to_be32((wr->wr.fast_reg.rkey & 0xff) | 0xffffff00);
+ seg->flags_pd = cpu_to_be32(MLX5_MKEY_REMOTE_INVAL);
+ seg->start_addr = cpu_to_be64(wr->wr.fast_reg.iova_start);
+ seg->len = cpu_to_be64(wr->wr.fast_reg.length);
+ seg->xlt_oct_size = cpu_to_be32((wr->wr.fast_reg.page_list_len + 1) / 2);
+ seg->log2_page_size = wr->wr.fast_reg.page_shift;
+}
+
+static void set_reg_mkey_segment(struct mlx5_mkey_seg *seg, struct ib_send_wr *wr)
+{
+ memset(seg, 0, sizeof(*seg));
+ if (wr->send_flags & MLX5_IB_SEND_UMR_UNREG) {
+ seg->status = 1 << 6;
+ return;
+ }
+
+ seg->flags = convert_access(wr->wr.fast_reg.access_flags);
+ seg->flags_pd = cpu_to_be32(to_mpd((struct ib_pd *)wr->wr.fast_reg.page_list)->pdn);
+ seg->start_addr = cpu_to_be64(wr->wr.fast_reg.iova_start);
+ seg->len = cpu_to_be64(wr->wr.fast_reg.length);
+ seg->log2_page_size = wr->wr.fast_reg.page_shift;
+ seg->qpn_mkey7_0 = cpu_to_be32(0xffffff << 8);
+}
+
+static void set_frwr_pages(struct mlx5_wqe_data_seg *dseg,
+ struct ib_send_wr *wr,
+ struct mlx5_core_dev *mdev,
+ struct mlx5_ib_pd *pd,
+ int writ)
+{
+ struct mlx5_ib_fast_reg_page_list *mfrpl = to_mfrpl(wr->wr.fast_reg.page_list);
+ u64 *page_list = wr->wr.fast_reg.page_list->page_list;
+ u64 perm = MLX5_EN_RD | (writ ? MLX5_EN_WR : 0);
+ int i;
+
+ for (i = 0; i < wr->wr.fast_reg.page_list_len; i++)
+ mfrpl->mapped_page_list[i] = cpu_to_be64(page_list[i] | perm);
+ dseg->addr = cpu_to_be64(mfrpl->map);
+ dseg->byte_count = cpu_to_be32(ALIGN(sizeof(u64) * wr->wr.fast_reg.page_list_len, 64));
+ dseg->lkey = cpu_to_be32(pd->pa_lkey);
+}
+
+static __be32 send_ieth(struct ib_send_wr *wr)
+{
+ switch (wr->opcode) {
+ case IB_WR_SEND_WITH_IMM:
+ case IB_WR_RDMA_WRITE_WITH_IMM:
+ return wr->ex.imm_data;
+
+ case IB_WR_SEND_WITH_INV:
+ return cpu_to_be32(wr->ex.invalidate_rkey);
+
+ default:
+ return 0;
+ }
+}
+
+static u8 calc_sig(void *wqe, int size)
+{
+ u8 *p = wqe;
+ u8 res = 0;
+ int i;
+
+ for (i = 0; i < size; i++)
+ res ^= p[i];
+
+ return ~res;
+}
+
+static u8 wq_sig(void *wqe)
+{
+ return calc_sig(wqe, (*((u8 *)wqe + 8) & 0x3f) << 4);
+}
+
+static int set_data_inl_seg(struct mlx5_ib_qp *qp, struct ib_send_wr *wr,
+ void *wqe, int *sz)
+{
+ struct mlx5_wqe_inline_seg *seg;
+ void *qend = qp->sq.qend;
+ void *addr;
+ int inl = 0;
+ int copy;
+ int len;
+ int i;
+
+ seg = wqe;
+ wqe += sizeof(*seg);
+ for (i = 0; i < wr->num_sge; i++) {
+ addr = (void *)(unsigned long)(wr->sg_list[i].addr);
+ len = wr->sg_list[i].length;
+ inl += len;
+
+ if (unlikely(inl > qp->max_inline_data))
+ return -ENOMEM;
+
+ if (unlikely(wqe + len > qend)) {
+ copy = qend - wqe;
+ memcpy(wqe, addr, copy);
+ addr += copy;
+ len -= copy;
+ wqe = mlx5_get_send_wqe(qp, 0);
+ }
+ memcpy(wqe, addr, len);
+ wqe += len;
+ }
+
+ seg->byte_count = cpu_to_be32(inl | MLX5_INLINE_SEG);
+
+ *sz = ALIGN(inl + sizeof(seg->byte_count), 16) / 16;
+
+ return 0;
+}
+
+static int set_frwr_li_wr(void **seg, struct ib_send_wr *wr, int *size,
+ struct mlx5_core_dev *mdev, struct mlx5_ib_pd *pd, struct mlx5_ib_qp *qp)
+{
+ int writ = 0;
+ int li;
+
+ li = wr->opcode == IB_WR_LOCAL_INV ? 1 : 0;
+ if (unlikely(wr->send_flags & IB_SEND_INLINE))
+ return -EINVAL;
+
+ set_frwr_umr_segment(*seg, wr, li);
+ *seg += sizeof(struct mlx5_wqe_umr_ctrl_seg);
+ *size += sizeof(struct mlx5_wqe_umr_ctrl_seg) / 16;
+ if (unlikely((*seg == qp->sq.qend)))
+ *seg = mlx5_get_send_wqe(qp, 0);
+ set_mkey_segment(*seg, wr, li, &writ);
+ *seg += sizeof(struct mlx5_mkey_seg);
+ *size += sizeof(struct mlx5_mkey_seg) / 16;
+ if (unlikely((*seg == qp->sq.qend)))
+ *seg = mlx5_get_send_wqe(qp, 0);
+ if (!li) {
+ set_frwr_pages(*seg, wr, mdev, pd, writ);
+ *seg += sizeof(struct mlx5_wqe_data_seg);
+ *size += (sizeof(struct mlx5_wqe_data_seg) / 16);
+ }
+ return 0;
+}
+
+static void dump_wqe(struct mlx5_ib_qp *qp, int idx, int size_16)
+{
+ __be32 *p = NULL;
+ int tidx = idx;
+ int i, j;
+
+ pr_debug("dump wqe at %p\n", mlx5_get_send_wqe(qp, tidx));
+ for (i = 0, j = 0; i < size_16 * 4; i += 4, j += 4) {
+ if ((i & 0xf) == 0) {
+ void *buf = mlx5_get_send_wqe(qp, tidx);
+ tidx = (tidx + 1) & (qp->sq.wqe_cnt - 1);
+ p = buf;
+ j = 0;
+ }
+ pr_debug("%08x %08x %08x %08x\n", be32_to_cpu(p[j]),
+ be32_to_cpu(p[j + 1]), be32_to_cpu(p[j + 2]),
+ be32_to_cpu(p[j + 3]));
+ }
+}
+
+static void mlx5_bf_copy(u64 __iomem *dst, u64 *src,
+ unsigned bytecnt, struct mlx5_ib_qp *qp)
+{
+ while (bytecnt > 0) {
+ __iowrite64_copy(dst++, src++, 8);
+ __iowrite64_copy(dst++, src++, 8);
+ __iowrite64_copy(dst++, src++, 8);
+ __iowrite64_copy(dst++, src++, 8);
+ __iowrite64_copy(dst++, src++, 8);
+ __iowrite64_copy(dst++, src++, 8);
+ __iowrite64_copy(dst++, src++, 8);
+ __iowrite64_copy(dst++, src++, 8);
+ bytecnt -= 64;
+ if (unlikely(src == qp->sq.qend))
+ src = mlx5_get_send_wqe(qp, 0);
+ }
+}
+
+static u8 get_fence(u8 fence, struct ib_send_wr *wr)
+{
+ if (unlikely(wr->opcode == IB_WR_LOCAL_INV &&
+ wr->send_flags & IB_SEND_FENCE))
+ return MLX5_FENCE_MODE_STRONG_ORDERING;
+
+ if (unlikely(fence)) {
+ if (wr->send_flags & IB_SEND_FENCE)
+ return MLX5_FENCE_MODE_SMALL_AND_FENCE;
+ else
+ return fence;
+
+ } else {
+ return 0;
+ }
+}
+
+int mlx5_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
+ struct ib_send_wr **bad_wr)
+{
+ struct mlx5_wqe_ctrl_seg *ctrl = NULL; /* compiler warning */
+ struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
+ struct mlx5_core_dev *mdev = &dev->mdev;
+ struct mlx5_ib_qp *qp = to_mqp(ibqp);
+ struct mlx5_wqe_data_seg *dpseg;
+ struct mlx5_wqe_xrc_seg *xrc;
+ struct mlx5_bf *bf = qp->bf;
+ int uninitialized_var(size);
+ void *qend = qp->sq.qend;
+ unsigned long flags;
+ u32 mlx5_opcode;
+ unsigned idx;
+ int err = 0;
+ int inl = 0;
+ int num_sge;
+ void *seg;
+ int nreq;
+ int i;
+ u8 next_fence = 0;
+ u8 opmod = 0;
+ u8 fence;
+
+ spin_lock_irqsave(&qp->sq.lock, flags);
+
+ for (nreq = 0; wr; nreq++, wr = wr->next) {
+ if (unlikely(wr->opcode >= sizeof(mlx5_ib_opcode) / sizeof(mlx5_ib_opcode[0]))) {
+ mlx5_ib_warn(dev, "\n");
+ err = -EINVAL;
+ *bad_wr = wr;
+ goto out;
+ }
+
+ if (unlikely(mlx5_wq_overflow(&qp->sq, nreq, qp->ibqp.send_cq))) {
+ mlx5_ib_warn(dev, "\n");
+ err = -ENOMEM;
+ *bad_wr = wr;
+ goto out;
+ }
+
+ fence = qp->fm_cache;
+ num_sge = wr->num_sge;
+ if (unlikely(num_sge > qp->sq.max_gs)) {
+ mlx5_ib_warn(dev, "\n");
+ err = -ENOMEM;
+ *bad_wr = wr;
+ goto out;
+ }
+
+ idx = qp->sq.cur_post & (qp->sq.wqe_cnt - 1);
+ seg = mlx5_get_send_wqe(qp, idx);
+ ctrl = seg;
+ *(uint32_t *)(seg + 8) = 0;
+ ctrl->imm = send_ieth(wr);
+ ctrl->fm_ce_se = qp->sq_signal_bits |
+ (wr->send_flags & IB_SEND_SIGNALED ?
+ MLX5_WQE_CTRL_CQ_UPDATE : 0) |
+ (wr->send_flags & IB_SEND_SOLICITED ?
+ MLX5_WQE_CTRL_SOLICITED : 0);
+
+ seg += sizeof(*ctrl);
+ size = sizeof(*ctrl) / 16;
+
+ switch (ibqp->qp_type) {
+ case IB_QPT_XRC_INI:
+ xrc = seg;
+ xrc->xrc_srqn = htonl(wr->xrc_remote_srq_num);
+ seg += sizeof(*xrc);
+ size += sizeof(*xrc) / 16;
+ /* fall through */
+ case IB_QPT_RC:
+ switch (wr->opcode) {
+ case IB_WR_RDMA_READ:
+ case IB_WR_RDMA_WRITE:
+ case IB_WR_RDMA_WRITE_WITH_IMM:
+ set_raddr_seg(seg, wr->wr.rdma.remote_addr,
+ wr->wr.rdma.rkey);
+ seg += sizeof(struct mlx5_wqe_raddr_seg);
+ size += sizeof(struct mlx5_wqe_raddr_seg) / 16;
+ break;
+
+ case IB_WR_ATOMIC_CMP_AND_SWP:
+ case IB_WR_ATOMIC_FETCH_AND_ADD:
+ set_raddr_seg(seg, wr->wr.atomic.remote_addr,
+ wr->wr.atomic.rkey);
+ seg += sizeof(struct mlx5_wqe_raddr_seg);
+
+ set_atomic_seg(seg, wr);
+ seg += sizeof(struct mlx5_wqe_atomic_seg);
+
+ size += (sizeof(struct mlx5_wqe_raddr_seg) +
+ sizeof(struct mlx5_wqe_atomic_seg)) / 16;
+ break;
+
+ case IB_WR_MASKED_ATOMIC_CMP_AND_SWP:
+ set_raddr_seg(seg, wr->wr.atomic.remote_addr,
+ wr->wr.atomic.rkey);
+ seg += sizeof(struct mlx5_wqe_raddr_seg);
+
+ set_masked_atomic_seg(seg, wr);
+ seg += sizeof(struct mlx5_wqe_masked_atomic_seg);
+
+ size += (sizeof(struct mlx5_wqe_raddr_seg) +
+ sizeof(struct mlx5_wqe_masked_atomic_seg)) / 16;
+ break;
+
+ case IB_WR_LOCAL_INV:
+ next_fence = MLX5_FENCE_MODE_INITIATOR_SMALL;
+ qp->sq.wr_data[idx] = IB_WR_LOCAL_INV;
+ ctrl->imm = cpu_to_be32(wr->ex.invalidate_rkey);
+ err = set_frwr_li_wr(&seg, wr, &size, mdev, to_mpd(ibqp->pd), qp);
+ if (err) {
+ mlx5_ib_warn(dev, "\n");
+ *bad_wr = wr;
+ goto out;
+ }
+ num_sge = 0;
+ break;
+
+ case IB_WR_FAST_REG_MR:
+ next_fence = MLX5_FENCE_MODE_INITIATOR_SMALL;
+ qp->sq.wr_data[idx] = IB_WR_FAST_REG_MR;
+ ctrl->imm = cpu_to_be32(wr->wr.fast_reg.rkey);
+ err = set_frwr_li_wr(&seg, wr, &size, mdev, to_mpd(ibqp->pd), qp);
+ if (err) {
+ mlx5_ib_warn(dev, "\n");
+ *bad_wr = wr;
+ goto out;
+ }
+ num_sge = 0;
+ break;
+
+ default:
+ break;
+ }
+ break;
+
+ case IB_QPT_UC:
+ switch (wr->opcode) {
+ case IB_WR_RDMA_WRITE:
+ case IB_WR_RDMA_WRITE_WITH_IMM:
+ set_raddr_seg(seg, wr->wr.rdma.remote_addr,
+ wr->wr.rdma.rkey);
+ seg += sizeof(struct mlx5_wqe_raddr_seg);
+ size += sizeof(struct mlx5_wqe_raddr_seg) / 16;
+ break;
+
+ default:
+ break;
+ }
+ break;
+
+ case IB_QPT_UD:
+ case IB_QPT_SMI:
+ case IB_QPT_GSI:
+ set_datagram_seg(seg, wr);
+ seg += sizeof(struct mlx5_wqe_datagram_seg);
+ size += sizeof(struct mlx5_wqe_datagram_seg) / 16;
+ if (unlikely((seg == qend)))
+ seg = mlx5_get_send_wqe(qp, 0);
+ break;
+
+ case MLX5_IB_QPT_REG_UMR:
+ if (wr->opcode != MLX5_IB_WR_UMR) {
+ err = -EINVAL;
+ mlx5_ib_warn(dev, "bad opcode\n");
+ goto out;
+ }
+ qp->sq.wr_data[idx] = MLX5_IB_WR_UMR;
+ ctrl->imm = cpu_to_be32(wr->wr.fast_reg.rkey);
+ set_reg_umr_segment(seg, wr);
+ seg += sizeof(struct mlx5_wqe_umr_ctrl_seg);
+ size += sizeof(struct mlx5_wqe_umr_ctrl_seg) / 16;
+ if (unlikely((seg == qend)))
+ seg = mlx5_get_send_wqe(qp, 0);
+ set_reg_mkey_segment(seg, wr);
+ seg += sizeof(struct mlx5_mkey_seg);
+ size += sizeof(struct mlx5_mkey_seg) / 16;
+ if (unlikely((seg == qend)))
+ seg = mlx5_get_send_wqe(qp, 0);
+ break;
+
+ default:
+ break;
+ }
+
+ if (wr->send_flags & IB_SEND_INLINE && num_sge) {
+ int uninitialized_var(sz);
+
+ err = set_data_inl_seg(qp, wr, seg, &sz);
+ if (unlikely(err)) {
+ mlx5_ib_warn(dev, "\n");
+ *bad_wr = wr;
+ goto out;
+ }
+ inl = 1;
+ size += sz;
+ } else {
+ dpseg = seg;
+ for (i = 0; i < num_sge; i++) {
+ if (unlikely(dpseg == qend)) {
+ seg = mlx5_get_send_wqe(qp, 0);
+ dpseg = seg;
+ }
+ if (likely(wr->sg_list[i].length)) {
+ set_data_ptr_seg(dpseg, wr->sg_list + i);
+ size += sizeof(struct mlx5_wqe_data_seg) / 16;
+ dpseg++;
+ }
+ }
+ }
+
+ mlx5_opcode = mlx5_ib_opcode[wr->opcode];
+ ctrl->opmod_idx_opcode = cpu_to_be32(((u32)(qp->sq.cur_post) << 8) |
+ mlx5_opcode |
+ ((u32)opmod << 24));
+ ctrl->qpn_ds = cpu_to_be32(size | (qp->mqp.qpn << 8));
+ ctrl->fm_ce_se |= get_fence(fence, wr);
+ qp->fm_cache = next_fence;
+ if (unlikely(qp->wq_sig))
+ ctrl->signature = wq_sig(ctrl);
+
+ qp->sq.wrid[idx] = wr->wr_id;
+ qp->sq.w_list[idx].opcode = mlx5_opcode;
+ qp->sq.wqe_head[idx] = qp->sq.head + nreq;
+ qp->sq.cur_post += DIV_ROUND_UP(size * 16, MLX5_SEND_WQE_BB);
+ qp->sq.w_list[idx].next = qp->sq.cur_post;
+
+ if (0)
+ dump_wqe(qp, idx, size);
+ }
+
+out:
+ if (likely(nreq)) {
+ qp->sq.head += nreq;
+
+ /* Make sure that descriptors are written before
+ * updating doorbell record and ringing the doorbell
+ */
+ wmb();
+
+ qp->db.db[MLX5_SND_DBR] = cpu_to_be32(qp->sq.cur_post);
+
+ if (bf->need_lock)
+ spin_lock(&bf->lock);
+
+ /* TBD enable WC */
+ if (0 && nreq == 1 && bf->uuarn && inl && size > 1 && size <= bf->buf_size / 16) {
+ mlx5_bf_copy(bf->reg + bf->offset, (u64 *)ctrl, ALIGN(size * 16, 64), qp);
+ /* wc_wmb(); */
+ } else {
+ mlx5_write64((__be32 *)ctrl, bf->regreg + bf->offset,
+ MLX5_GET_DOORBELL_LOCK(&bf->lock32));
+ /* Make sure doorbells don't leak out of SQ spinlock
+ * and reach the HCA out of order.
+ */
+ mmiowb();
+ }
+ bf->offset ^= bf->buf_size;
+ if (bf->need_lock)
+ spin_unlock(&bf->lock);
+ }
+
+ spin_unlock_irqrestore(&qp->sq.lock, flags);
+
+ return err;
+}
+
+static void set_sig_seg(struct mlx5_rwqe_sig *sig, int size)
+{
+ sig->signature = calc_sig(sig, size);
+}
+
+int mlx5_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
+ struct ib_recv_wr **bad_wr)
+{
+ struct mlx5_ib_qp *qp = to_mqp(ibqp);
+ struct mlx5_wqe_data_seg *scat;
+ struct mlx5_rwqe_sig *sig;
+ unsigned long flags;
+ int err = 0;
+ int nreq;
+ int ind;
+ int i;
+
+ spin_lock_irqsave(&qp->rq.lock, flags);
+
+ ind = qp->rq.head & (qp->rq.wqe_cnt - 1);
+
+ for (nreq = 0; wr; nreq++, wr = wr->next) {
+ if (mlx5_wq_overflow(&qp->rq, nreq, qp->ibqp.recv_cq)) {
+ err = -ENOMEM;
+ *bad_wr = wr;
+ goto out;
+ }
+
+ if (unlikely(wr->num_sge > qp->rq.max_gs)) {
+ err = -EINVAL;
+ *bad_wr = wr;
+ goto out;
+ }
+
+ scat = get_recv_wqe(qp, ind);
+ if (qp->wq_sig)
+ scat++;
+
+ for (i = 0; i < wr->num_sge; i++)
+ set_data_ptr_seg(scat + i, wr->sg_list + i);
+
+ if (i < qp->rq.max_gs) {
+ scat[i].byte_count = 0;
+ scat[i].lkey = cpu_to_be32(MLX5_INVALID_LKEY);
+ scat[i].addr = 0;
+ }
+
+ if (qp->wq_sig) {
+ sig = (struct mlx5_rwqe_sig *)scat;
+ set_sig_seg(sig, (qp->rq.max_gs + 1) << 2);
+ }
+
+ qp->rq.wrid[ind] = wr->wr_id;
+
+ ind = (ind + 1) & (qp->rq.wqe_cnt - 1);
+ }
+
+out:
+ if (likely(nreq)) {
+ qp->rq.head += nreq;
+
+ /* Make sure that descriptors are written before
+ * doorbell record.
+ */
+ wmb();
+
+ *qp->db.db = cpu_to_be32(qp->rq.head & 0xffff);
+ }
+
+ spin_unlock_irqrestore(&qp->rq.lock, flags);
+
+ return err;
+}
+
+static inline enum ib_qp_state to_ib_qp_state(enum mlx5_qp_state mlx5_state)
+{
+ switch (mlx5_state) {
+ case MLX5_QP_STATE_RST: return IB_QPS_RESET;
+ case MLX5_QP_STATE_INIT: return IB_QPS_INIT;
+ case MLX5_QP_STATE_RTR: return IB_QPS_RTR;
+ case MLX5_QP_STATE_RTS: return IB_QPS_RTS;
+ case MLX5_QP_STATE_SQ_DRAINING:
+ case MLX5_QP_STATE_SQD: return IB_QPS_SQD;
+ case MLX5_QP_STATE_SQER: return IB_QPS_SQE;
+ case MLX5_QP_STATE_ERR: return IB_QPS_ERR;
+ default: return -1;
+ }
+}
+
+static inline enum ib_mig_state to_ib_mig_state(int mlx5_mig_state)
+{
+ switch (mlx5_mig_state) {
+ case MLX5_QP_PM_ARMED: return IB_MIG_ARMED;
+ case MLX5_QP_PM_REARM: return IB_MIG_REARM;
+ case MLX5_QP_PM_MIGRATED: return IB_MIG_MIGRATED;
+ default: return -1;
+ }
+}
+
+static int to_ib_qp_access_flags(int mlx5_flags)
+{
+ int ib_flags = 0;
+
+ if (mlx5_flags & MLX5_QP_BIT_RRE)
+ ib_flags |= IB_ACCESS_REMOTE_READ;
+ if (mlx5_flags & MLX5_QP_BIT_RWE)
+ ib_flags |= IB_ACCESS_REMOTE_WRITE;
+ if (mlx5_flags & MLX5_QP_BIT_RAE)
+ ib_flags |= IB_ACCESS_REMOTE_ATOMIC;
+
+ return ib_flags;
+}
+
+static void to_ib_ah_attr(struct mlx5_ib_dev *ibdev, struct ib_ah_attr *ib_ah_attr,
+ struct mlx5_qp_path *path)
+{
+ struct mlx5_core_dev *dev = &ibdev->mdev;
+
+ memset(ib_ah_attr, 0, sizeof(*ib_ah_attr));
+ ib_ah_attr->port_num = path->port;
+
+ if (ib_ah_attr->port_num == 0 || ib_ah_attr->port_num > dev->caps.num_ports)
+ return;
+
+ ib_ah_attr->sl = path->sl & 0xf;
+
+ ib_ah_attr->dlid = be16_to_cpu(path->rlid);
+ ib_ah_attr->src_path_bits = path->grh_mlid & 0x7f;
+ ib_ah_attr->static_rate = path->static_rate ? path->static_rate - 5 : 0;
+ ib_ah_attr->ah_flags = (path->grh_mlid & (1 << 7)) ? IB_AH_GRH : 0;
+ if (ib_ah_attr->ah_flags) {
+ ib_ah_attr->grh.sgid_index = path->mgid_index;
+ ib_ah_attr->grh.hop_limit = path->hop_limit;
+ ib_ah_attr->grh.traffic_class =
+ (be32_to_cpu(path->tclass_flowlabel) >> 20) & 0xff;
+ ib_ah_attr->grh.flow_label =
+ be32_to_cpu(path->tclass_flowlabel) & 0xfffff;
+ memcpy(ib_ah_attr->grh.dgid.raw,
+ path->rgid, sizeof(ib_ah_attr->grh.dgid.raw));
+ }
+}
+
+int mlx5_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask,
+ struct ib_qp_init_attr *qp_init_attr)
+{
+ struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
+ struct mlx5_ib_qp *qp = to_mqp(ibqp);
+ struct mlx5_query_qp_mbox_out *outb;
+ struct mlx5_qp_context *context;
+ int mlx5_state;
+ int err = 0;
+
+ mutex_lock(&qp->mutex);
+ outb = kzalloc(sizeof(*outb), GFP_KERNEL);
+ if (!outb) {
+ err = -ENOMEM;
+ goto out;
+ }
+ context = &outb->ctx;
+ err = mlx5_core_qp_query(&dev->mdev, &qp->mqp, outb, sizeof(*outb));
+ if (err)
+ goto out_free;
+
+ mlx5_state = be32_to_cpu(context->flags) >> 28;
+
+ qp->state = to_ib_qp_state(mlx5_state);
+ qp_attr->qp_state = qp->state;
+ qp_attr->path_mtu = context->mtu_msgmax >> 5;
+ qp_attr->path_mig_state =
+ to_ib_mig_state((be32_to_cpu(context->flags) >> 11) & 0x3);
+ qp_attr->qkey = be32_to_cpu(context->qkey);
+ qp_attr->rq_psn = be32_to_cpu(context->rnr_nextrecvpsn) & 0xffffff;
+ qp_attr->sq_psn = be32_to_cpu(context->next_send_psn) & 0xffffff;
+ qp_attr->dest_qp_num = be32_to_cpu(context->log_pg_sz_remote_qpn) & 0xffffff;
+ qp_attr->qp_access_flags =
+ to_ib_qp_access_flags(be32_to_cpu(context->params2));
+
+ if (qp->ibqp.qp_type == IB_QPT_RC || qp->ibqp.qp_type == IB_QPT_UC) {
+ to_ib_ah_attr(dev, &qp_attr->ah_attr, &context->pri_path);
+ to_ib_ah_attr(dev, &qp_attr->alt_ah_attr, &context->alt_path);
+ qp_attr->alt_pkey_index = context->alt_path.pkey_index & 0x7f;
+ qp_attr->alt_port_num = qp_attr->alt_ah_attr.port_num;
+ }
+
+ qp_attr->pkey_index = context->pri_path.pkey_index & 0x7f;
+ qp_attr->port_num = context->pri_path.port;
+
+ /* qp_attr->en_sqd_async_notify is only applicable in modify qp */
+ qp_attr->sq_draining = mlx5_state == MLX5_QP_STATE_SQ_DRAINING;
+
+ qp_attr->max_rd_atomic = 1 << ((be32_to_cpu(context->params1) >> 21) & 0x7);
+
+ qp_attr->max_dest_rd_atomic =
+ 1 << ((be32_to_cpu(context->params2) >> 21) & 0x7);
+ qp_attr->min_rnr_timer =
+ (be32_to_cpu(context->rnr_nextrecvpsn) >> 24) & 0x1f;
+ qp_attr->timeout = context->pri_path.ackto_lt >> 3;
+ qp_attr->retry_cnt = (be32_to_cpu(context->params1) >> 16) & 0x7;
+ qp_attr->rnr_retry = (be32_to_cpu(context->params1) >> 13) & 0x7;
+ qp_attr->alt_timeout = context->alt_path.ackto_lt >> 3;
+ qp_attr->cur_qp_state = qp_attr->qp_state;
+ qp_attr->cap.max_recv_wr = qp->rq.wqe_cnt;
+ qp_attr->cap.max_recv_sge = qp->rq.max_gs;
+
+ if (!ibqp->uobject) {
+ qp_attr->cap.max_send_wr = qp->sq.wqe_cnt;
+ qp_attr->cap.max_send_sge = qp->sq.max_gs;
+ } else {
+ qp_attr->cap.max_send_wr = 0;
+ qp_attr->cap.max_send_sge = 0;
+ }
+
+ /* We don't support inline sends for kernel QPs (yet), and we
+ * don't know what userspace's value should be.
+ */
+ qp_attr->cap.max_inline_data = 0;
+
+ qp_init_attr->cap = qp_attr->cap;
+
+ qp_init_attr->create_flags = 0;
+ if (qp->flags & MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK)
+ qp_init_attr->create_flags |= IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK;
+
+ qp_init_attr->sq_sig_type = qp->sq_signal_bits & MLX5_WQE_CTRL_CQ_UPDATE ?
+ IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR;
+
+out_free:
+ kfree(outb);
+
+out:
+ mutex_unlock(&qp->mutex);
+ return err;
+}
+
+struct ib_xrcd *mlx5_ib_alloc_xrcd(struct ib_device *ibdev,
+ struct ib_ucontext *context,
+ struct ib_udata *udata)
+{
+ struct mlx5_ib_dev *dev = to_mdev(ibdev);
+ struct mlx5_ib_xrcd *xrcd;
+ int err;
+
+ if (!(dev->mdev.caps.flags & MLX5_DEV_CAP_FLAG_XRC))
+ return ERR_PTR(-ENOSYS);
+
+ xrcd = kmalloc(sizeof(*xrcd), GFP_KERNEL);
+ if (!xrcd)
+ return ERR_PTR(-ENOMEM);
+
+ err = mlx5_core_xrcd_alloc(&dev->mdev, &xrcd->xrcdn);
+ if (err) {
+ kfree(xrcd);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ return &xrcd->ibxrcd;
+}
+
+int mlx5_ib_dealloc_xrcd(struct ib_xrcd *xrcd)
+{
+ struct mlx5_ib_dev *dev = to_mdev(xrcd->device);
+ u32 xrcdn = to_mxrcd(xrcd)->xrcdn;
+ int err;
+
+ err = mlx5_core_xrcd_dealloc(&dev->mdev, xrcdn);
+ if (err) {
+ mlx5_ib_warn(dev, "failed to dealloc xrcdn 0x%x\n", xrcdn);
+ return err;
+ }
+
+ kfree(xrcd);
+
+ return 0;
+}
diff --git a/drivers/infiniband/hw/mlx5/srq.c b/drivers/infiniband/hw/mlx5/srq.c
new file mode 100644
index 00000000000..84d297afd6a
--- /dev/null
+++ b/drivers/infiniband/hw/mlx5/srq.c
@@ -0,0 +1,473 @@
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/module.h>
+#include <linux/mlx5/qp.h>
+#include <linux/mlx5/srq.h>
+#include <linux/slab.h>
+#include <rdma/ib_umem.h>
+
+#include "mlx5_ib.h"
+#include "user.h"
+
+/* not supported currently */
+static int srq_signature;
+
+static void *get_wqe(struct mlx5_ib_srq *srq, int n)
+{
+ return mlx5_buf_offset(&srq->buf, n << srq->msrq.wqe_shift);
+}
+
+static void mlx5_ib_srq_event(struct mlx5_core_srq *srq, enum mlx5_event type)
+{
+ struct ib_event event;
+ struct ib_srq *ibsrq = &to_mibsrq(srq)->ibsrq;
+
+ if (ibsrq->event_handler) {
+ event.device = ibsrq->device;
+ event.element.srq = ibsrq;
+ switch (type) {
+ case MLX5_EVENT_TYPE_SRQ_RQ_LIMIT:
+ event.event = IB_EVENT_SRQ_LIMIT_REACHED;
+ break;
+ case MLX5_EVENT_TYPE_SRQ_CATAS_ERROR:
+ event.event = IB_EVENT_SRQ_ERR;
+ break;
+ default:
+ pr_warn("mlx5_ib: Unexpected event type %d on SRQ %06x\n",
+ type, srq->srqn);
+ return;
+ }
+
+ ibsrq->event_handler(&event, ibsrq->srq_context);
+ }
+}
+
+static int create_srq_user(struct ib_pd *pd, struct mlx5_ib_srq *srq,
+ struct mlx5_create_srq_mbox_in **in,
+ struct ib_udata *udata, int buf_size, int *inlen)
+{
+ struct mlx5_ib_dev *dev = to_mdev(pd->device);
+ struct mlx5_ib_create_srq ucmd;
+ int err;
+ int npages;
+ int page_shift;
+ int ncont;
+ u32 offset;
+
+ if (ib_copy_from_udata(&ucmd, udata, sizeof(ucmd))) {
+ mlx5_ib_dbg(dev, "failed copy udata\n");
+ return -EFAULT;
+ }
+ srq->wq_sig = !!(ucmd.flags & MLX5_SRQ_FLAG_SIGNATURE);
+
+ srq->umem = ib_umem_get(pd->uobject->context, ucmd.buf_addr, buf_size,
+ 0, 0);
+ if (IS_ERR(srq->umem)) {
+ mlx5_ib_dbg(dev, "failed umem get, size %d\n", buf_size);
+ err = PTR_ERR(srq->umem);
+ return err;
+ }
+
+ mlx5_ib_cont_pages(srq->umem, ucmd.buf_addr, &npages,
+ &page_shift, &ncont, NULL);
+ err = mlx5_ib_get_buf_offset(ucmd.buf_addr, page_shift,
+ &offset);
+ if (err) {
+ mlx5_ib_warn(dev, "bad offset\n");
+ goto err_umem;
+ }
+
+ *inlen = sizeof(**in) + sizeof(*(*in)->pas) * ncont;
+ *in = mlx5_vzalloc(*inlen);
+ if (!(*in)) {
+ err = -ENOMEM;
+ goto err_umem;
+ }
+
+ mlx5_ib_populate_pas(dev, srq->umem, page_shift, (*in)->pas, 0);
+
+ err = mlx5_ib_db_map_user(to_mucontext(pd->uobject->context),
+ ucmd.db_addr, &srq->db);
+ if (err) {
+ mlx5_ib_dbg(dev, "map doorbell failed\n");
+ goto err_in;
+ }
+
+ (*in)->ctx.log_pg_sz = page_shift - PAGE_SHIFT;
+ (*in)->ctx.pgoff_cqn = cpu_to_be32(offset << 26);
+
+ return 0;
+
+err_in:
+ mlx5_vfree(*in);
+
+err_umem:
+ ib_umem_release(srq->umem);
+
+ return err;
+}
+
+static int create_srq_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_srq *srq,
+ struct mlx5_create_srq_mbox_in **in, int buf_size,
+ int *inlen)
+{
+ int err;
+ int i;
+ struct mlx5_wqe_srq_next_seg *next;
+ int page_shift;
+ int npages;
+
+ err = mlx5_db_alloc(&dev->mdev, &srq->db);
+ if (err) {
+ mlx5_ib_warn(dev, "alloc dbell rec failed\n");
+ return err;
+ }
+
+ *srq->db.db = 0;
+
+ if (mlx5_buf_alloc(&dev->mdev, buf_size, PAGE_SIZE * 2, &srq->buf)) {
+ mlx5_ib_dbg(dev, "buf alloc failed\n");
+ err = -ENOMEM;
+ goto err_db;
+ }
+ page_shift = srq->buf.page_shift;
+
+ srq->head = 0;
+ srq->tail = srq->msrq.max - 1;
+ srq->wqe_ctr = 0;
+
+ for (i = 0; i < srq->msrq.max; i++) {
+ next = get_wqe(srq, i);
+ next->next_wqe_index =
+ cpu_to_be16((i + 1) & (srq->msrq.max - 1));
+ }
+
+ npages = DIV_ROUND_UP(srq->buf.npages, 1 << (page_shift - PAGE_SHIFT));
+ mlx5_ib_dbg(dev, "buf_size %d, page_shift %d, npages %d, calc npages %d\n",
+ buf_size, page_shift, srq->buf.npages, npages);
+ *inlen = sizeof(**in) + sizeof(*(*in)->pas) * npages;
+ *in = mlx5_vzalloc(*inlen);
+ if (!*in) {
+ err = -ENOMEM;
+ goto err_buf;
+ }
+ mlx5_fill_page_array(&srq->buf, (*in)->pas);
+
+ srq->wrid = kmalloc(srq->msrq.max * sizeof(u64), GFP_KERNEL);
+ if (!srq->wrid) {
+ mlx5_ib_dbg(dev, "kmalloc failed %lu\n",
+ (unsigned long)(srq->msrq.max * sizeof(u64)));
+ err = -ENOMEM;
+ goto err_in;
+ }
+ srq->wq_sig = !!srq_signature;
+
+ (*in)->ctx.log_pg_sz = page_shift - PAGE_SHIFT;
+
+ return 0;
+
+err_in:
+ mlx5_vfree(*in);
+
+err_buf:
+ mlx5_buf_free(&dev->mdev, &srq->buf);
+
+err_db:
+ mlx5_db_free(&dev->mdev, &srq->db);
+ return err;
+}
+
+static void destroy_srq_user(struct ib_pd *pd, struct mlx5_ib_srq *srq)
+{
+ mlx5_ib_db_unmap_user(to_mucontext(pd->uobject->context), &srq->db);
+ ib_umem_release(srq->umem);
+}
+
+
+static void destroy_srq_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_srq *srq)
+{
+ kfree(srq->wrid);
+ mlx5_buf_free(&dev->mdev, &srq->buf);
+ mlx5_db_free(&dev->mdev, &srq->db);
+}
+
+struct ib_srq *mlx5_ib_create_srq(struct ib_pd *pd,
+ struct ib_srq_init_attr *init_attr,
+ struct ib_udata *udata)
+{
+ struct mlx5_ib_dev *dev = to_mdev(pd->device);
+ struct mlx5_ib_srq *srq;
+ int desc_size;
+ int buf_size;
+ int err;
+ struct mlx5_create_srq_mbox_in *uninitialized_var(in);
+ int uninitialized_var(inlen);
+ int is_xrc;
+ u32 flgs, xrcdn;
+
+ /* Sanity check SRQ size before proceeding */
+ if (init_attr->attr.max_wr >= dev->mdev.caps.max_srq_wqes) {
+ mlx5_ib_dbg(dev, "max_wr %d, cap %d\n",
+ init_attr->attr.max_wr,
+ dev->mdev.caps.max_srq_wqes);
+ return ERR_PTR(-EINVAL);
+ }
+
+ srq = kmalloc(sizeof(*srq), GFP_KERNEL);
+ if (!srq)
+ return ERR_PTR(-ENOMEM);
+
+ mutex_init(&srq->mutex);
+ spin_lock_init(&srq->lock);
+ srq->msrq.max = roundup_pow_of_two(init_attr->attr.max_wr + 1);
+ srq->msrq.max_gs = init_attr->attr.max_sge;
+
+ desc_size = sizeof(struct mlx5_wqe_srq_next_seg) +
+ srq->msrq.max_gs * sizeof(struct mlx5_wqe_data_seg);
+ desc_size = roundup_pow_of_two(desc_size);
+ desc_size = max_t(int, 32, desc_size);
+ srq->msrq.max_avail_gather = (desc_size - sizeof(struct mlx5_wqe_srq_next_seg)) /
+ sizeof(struct mlx5_wqe_data_seg);
+ srq->msrq.wqe_shift = ilog2(desc_size);
+ buf_size = srq->msrq.max * desc_size;
+ mlx5_ib_dbg(dev, "desc_size 0x%x, req wr 0x%x, srq size 0x%x, max_gs 0x%x, max_avail_gather 0x%x\n",
+ desc_size, init_attr->attr.max_wr, srq->msrq.max, srq->msrq.max_gs,
+ srq->msrq.max_avail_gather);
+
+ if (pd->uobject)
+ err = create_srq_user(pd, srq, &in, udata, buf_size, &inlen);
+ else
+ err = create_srq_kernel(dev, srq, &in, buf_size, &inlen);
+
+ if (err) {
+ mlx5_ib_warn(dev, "create srq %s failed, err %d\n",
+ pd->uobject ? "user" : "kernel", err);
+ goto err_srq;
+ }
+
+ is_xrc = (init_attr->srq_type == IB_SRQT_XRC);
+ in->ctx.state_log_sz = ilog2(srq->msrq.max);
+ flgs = ((srq->msrq.wqe_shift - 4) | (is_xrc << 5) | (srq->wq_sig << 7)) << 24;
+ xrcdn = 0;
+ if (is_xrc) {
+ xrcdn = to_mxrcd(init_attr->ext.xrc.xrcd)->xrcdn;
+ in->ctx.pgoff_cqn |= cpu_to_be32(to_mcq(init_attr->ext.xrc.cq)->mcq.cqn);
+ } else if (init_attr->srq_type == IB_SRQT_BASIC) {
+ xrcdn = to_mxrcd(dev->devr.x0)->xrcdn;
+ in->ctx.pgoff_cqn |= cpu_to_be32(to_mcq(dev->devr.c0)->mcq.cqn);
+ }
+
+ in->ctx.flags_xrcd = cpu_to_be32((flgs & 0xFF000000) | (xrcdn & 0xFFFFFF));
+
+ in->ctx.pd = cpu_to_be32(to_mpd(pd)->pdn);
+ in->ctx.db_record = cpu_to_be64(srq->db.dma);
+ err = mlx5_core_create_srq(&dev->mdev, &srq->msrq, in, inlen);
+ mlx5_vfree(in);
+ if (err) {
+ mlx5_ib_dbg(dev, "create SRQ failed, err %d\n", err);
+ goto err_srq;
+ }
+
+ mlx5_ib_dbg(dev, "create SRQ with srqn 0x%x\n", srq->msrq.srqn);
+
+ srq->msrq.event = mlx5_ib_srq_event;
+ srq->ibsrq.ext.xrc.srq_num = srq->msrq.srqn;
+
+ if (pd->uobject)
+ if (ib_copy_to_udata(udata, &srq->msrq.srqn, sizeof(__u32))) {
+ mlx5_ib_dbg(dev, "copy to user failed\n");
+ err = -EFAULT;
+ goto err_core;
+ }
+
+ init_attr->attr.max_wr = srq->msrq.max - 1;
+
+ return &srq->ibsrq;
+
+err_core:
+ mlx5_core_destroy_srq(&dev->mdev, &srq->msrq);
+ if (pd->uobject)
+ destroy_srq_user(pd, srq);
+ else
+ destroy_srq_kernel(dev, srq);
+
+err_srq:
+ kfree(srq);
+
+ return ERR_PTR(err);
+}
+
+int mlx5_ib_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
+ enum ib_srq_attr_mask attr_mask, struct ib_udata *udata)
+{
+ struct mlx5_ib_dev *dev = to_mdev(ibsrq->device);
+ struct mlx5_ib_srq *srq = to_msrq(ibsrq);
+ int ret;
+
+ /* We don't support resizing SRQs yet */
+ if (attr_mask & IB_SRQ_MAX_WR)
+ return -EINVAL;
+
+ if (attr_mask & IB_SRQ_LIMIT) {
+ if (attr->srq_limit >= srq->msrq.max)
+ return -EINVAL;
+
+ mutex_lock(&srq->mutex);
+ ret = mlx5_core_arm_srq(&dev->mdev, &srq->msrq, attr->srq_limit, 1);
+ mutex_unlock(&srq->mutex);
+
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+int mlx5_ib_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *srq_attr)
+{
+ struct mlx5_ib_dev *dev = to_mdev(ibsrq->device);
+ struct mlx5_ib_srq *srq = to_msrq(ibsrq);
+ int ret;
+ struct mlx5_query_srq_mbox_out *out;
+
+ out = kzalloc(sizeof(*out), GFP_KERNEL);
+ if (!out)
+ return -ENOMEM;
+
+ ret = mlx5_core_query_srq(&dev->mdev, &srq->msrq, out);
+ if (ret)
+ goto out_box;
+
+ srq_attr->srq_limit = be16_to_cpu(out->ctx.lwm);
+ srq_attr->max_wr = srq->msrq.max - 1;
+ srq_attr->max_sge = srq->msrq.max_gs;
+
+out_box:
+ kfree(out);
+ return ret;
+}
+
+int mlx5_ib_destroy_srq(struct ib_srq *srq)
+{
+ struct mlx5_ib_dev *dev = to_mdev(srq->device);
+ struct mlx5_ib_srq *msrq = to_msrq(srq);
+
+ mlx5_core_destroy_srq(&dev->mdev, &msrq->msrq);
+
+ if (srq->uobject) {
+ mlx5_ib_db_unmap_user(to_mucontext(srq->uobject->context), &msrq->db);
+ ib_umem_release(msrq->umem);
+ } else {
+ kfree(msrq->wrid);
+ mlx5_buf_free(&dev->mdev, &msrq->buf);
+ mlx5_db_free(&dev->mdev, &msrq->db);
+ }
+
+ kfree(srq);
+ return 0;
+}
+
+void mlx5_ib_free_srq_wqe(struct mlx5_ib_srq *srq, int wqe_index)
+{
+ struct mlx5_wqe_srq_next_seg *next;
+
+ /* always called with interrupts disabled. */
+ spin_lock(&srq->lock);
+
+ next = get_wqe(srq, srq->tail);
+ next->next_wqe_index = cpu_to_be16(wqe_index);
+ srq->tail = wqe_index;
+
+ spin_unlock(&srq->lock);
+}
+
+int mlx5_ib_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
+ struct ib_recv_wr **bad_wr)
+{
+ struct mlx5_ib_srq *srq = to_msrq(ibsrq);
+ struct mlx5_wqe_srq_next_seg *next;
+ struct mlx5_wqe_data_seg *scat;
+ unsigned long flags;
+ int err = 0;
+ int nreq;
+ int i;
+
+ spin_lock_irqsave(&srq->lock, flags);
+
+ for (nreq = 0; wr; nreq++, wr = wr->next) {
+ if (unlikely(wr->num_sge > srq->msrq.max_gs)) {
+ err = -EINVAL;
+ *bad_wr = wr;
+ break;
+ }
+
+ if (unlikely(srq->head == srq->tail)) {
+ err = -ENOMEM;
+ *bad_wr = wr;
+ break;
+ }
+
+ srq->wrid[srq->head] = wr->wr_id;
+
+ next = get_wqe(srq, srq->head);
+ srq->head = be16_to_cpu(next->next_wqe_index);
+ scat = (struct mlx5_wqe_data_seg *)(next + 1);
+
+ for (i = 0; i < wr->num_sge; i++) {
+ scat[i].byte_count = cpu_to_be32(wr->sg_list[i].length);
+ scat[i].lkey = cpu_to_be32(wr->sg_list[i].lkey);
+ scat[i].addr = cpu_to_be64(wr->sg_list[i].addr);
+ }
+
+ if (i < srq->msrq.max_avail_gather) {
+ scat[i].byte_count = 0;
+ scat[i].lkey = cpu_to_be32(MLX5_INVALID_LKEY);
+ scat[i].addr = 0;
+ }
+ }
+
+ if (likely(nreq)) {
+ srq->wqe_ctr += nreq;
+
+ /* Make sure that descriptors are written before
+ * doorbell record.
+ */
+ wmb();
+
+ *srq->db.db = cpu_to_be32(srq->wqe_ctr);
+ }
+
+ spin_unlock_irqrestore(&srq->lock, flags);
+
+ return err;
+}
diff --git a/drivers/infiniband/hw/mlx5/user.h b/drivers/infiniband/hw/mlx5/user.h
new file mode 100644
index 00000000000..a886de3e593
--- /dev/null
+++ b/drivers/infiniband/hw/mlx5/user.h
@@ -0,0 +1,121 @@
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef MLX5_IB_USER_H
+#define MLX5_IB_USER_H
+
+#include <linux/types.h>
+
+enum {
+ MLX5_QP_FLAG_SIGNATURE = 1 << 0,
+ MLX5_QP_FLAG_SCATTER_CQE = 1 << 1,
+};
+
+enum {
+ MLX5_SRQ_FLAG_SIGNATURE = 1 << 0,
+};
+
+
+/* Increment this value if any changes that break userspace ABI
+ * compatibility are made.
+ */
+#define MLX5_IB_UVERBS_ABI_VERSION 1
+
+/* Make sure that all structs defined in this file remain laid out so
+ * that they pack the same way on 32-bit and 64-bit architectures (to
+ * avoid incompatibility between 32-bit userspace and 64-bit kernels).
+ * In particular do not use pointer types -- pass pointers in __u64
+ * instead.
+ */
+
+struct mlx5_ib_alloc_ucontext_req {
+ __u32 total_num_uuars;
+ __u32 num_low_latency_uuars;
+};
+
+struct mlx5_ib_alloc_ucontext_resp {
+ __u32 qp_tab_size;
+ __u32 bf_reg_size;
+ __u32 tot_uuars;
+ __u32 cache_line_size;
+ __u16 max_sq_desc_sz;
+ __u16 max_rq_desc_sz;
+ __u32 max_send_wqebb;
+ __u32 max_recv_wr;
+ __u32 max_srq_recv_wr;
+ __u16 num_ports;
+ __u16 reserved;
+};
+
+struct mlx5_ib_alloc_pd_resp {
+ __u32 pdn;
+};
+
+struct mlx5_ib_create_cq {
+ __u64 buf_addr;
+ __u64 db_addr;
+ __u32 cqe_size;
+};
+
+struct mlx5_ib_create_cq_resp {
+ __u32 cqn;
+ __u32 reserved;
+};
+
+struct mlx5_ib_resize_cq {
+ __u64 buf_addr;
+};
+
+struct mlx5_ib_create_srq {
+ __u64 buf_addr;
+ __u64 db_addr;
+ __u32 flags;
+};
+
+struct mlx5_ib_create_srq_resp {
+ __u32 srqn;
+ __u32 reserved;
+};
+
+struct mlx5_ib_create_qp {
+ __u64 buf_addr;
+ __u64 db_addr;
+ __u32 sq_wqe_count;
+ __u32 rq_wqe_count;
+ __u32 rq_wqe_shift;
+ __u32 flags;
+};
+
+struct mlx5_ib_create_qp_resp {
+ __u32 uuar_index;
+};
+#endif /* MLX5_IB_USER_H */
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma.h b/drivers/infiniband/hw/ocrdma/ocrdma.h
index 48970af2367..d540180a8e4 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma.h
+++ b/drivers/infiniband/hw/ocrdma/ocrdma.h
@@ -42,8 +42,6 @@
#define OCRDMA_ROCE_DEV_VERSION "1.0.0"
#define OCRDMA_NODE_DESC "Emulex OneConnect RoCE HCA"
-#define ocrdma_err(format, arg...) printk(KERN_ERR format, ##arg)
-
#define OCRDMA_MAX_AH 512
#define OCRDMA_UVERBS(CMD_NAME) (1ull << IB_USER_VERBS_CMD_##CMD_NAME)
@@ -97,7 +95,6 @@ struct ocrdma_queue_info {
u16 id; /* qid, where to ring the doorbell. */
u16 head, tail;
bool created;
- atomic_t used; /* Number of valid elements in the queue */
};
struct ocrdma_eq {
@@ -198,7 +195,6 @@ struct ocrdma_cq {
struct ocrdma_ucontext *ucontext;
dma_addr_t pa;
u32 len;
- atomic_t use_cnt;
/* head of all qp's sq and rq for which cqes need to be flushed
* by the software.
@@ -210,7 +206,6 @@ struct ocrdma_pd {
struct ib_pd ibpd;
struct ocrdma_dev *dev;
struct ocrdma_ucontext *uctx;
- atomic_t use_cnt;
u32 id;
int num_dpp_qp;
u32 dpp_page;
@@ -241,16 +236,16 @@ struct ocrdma_srq {
struct ib_srq ibsrq;
struct ocrdma_dev *dev;
u8 __iomem *db;
+ struct ocrdma_qp_hwq_info rq;
+ u64 *rqe_wr_id_tbl;
+ u32 *idx_bit_fields;
+ u32 bit_fields_len;
+
/* provide synchronization to multiple context(s) posting rqe */
spinlock_t q_lock ____cacheline_aligned;
- struct ocrdma_qp_hwq_info rq;
struct ocrdma_pd *pd;
- atomic_t use_cnt;
u32 id;
- u64 *rqe_wr_id_tbl;
- u32 *idx_bit_fields;
- u32 bit_fields_len;
};
struct ocrdma_qp {
@@ -258,8 +253,6 @@ struct ocrdma_qp {
struct ocrdma_dev *dev;
u8 __iomem *sq_db;
- /* provide synchronization to multiple context(s) posting wqe, rqe */
- spinlock_t q_lock ____cacheline_aligned;
struct ocrdma_qp_hwq_info sq;
struct {
uint64_t wrid;
@@ -269,6 +262,9 @@ struct ocrdma_qp {
uint8_t rsvd[3];
} *wqe_wr_id_tbl;
u32 max_inline_data;
+
+ /* provide synchronization to multiple context(s) posting wqe, rqe */
+ spinlock_t q_lock ____cacheline_aligned;
struct ocrdma_cq *sq_cq;
/* list maintained per CQ to flush SQ errors */
struct list_head sq_entry;
@@ -296,10 +292,6 @@ struct ocrdma_qp {
u8 *ird_q_va;
};
-#define OCRDMA_GET_NUM_POSTED_SHIFT_VAL(qp) \
- (((qp->dev->nic_info.dev_family == OCRDMA_GEN2_FAMILY) && \
- (qp->id < 64)) ? 24 : 16)
-
struct ocrdma_hw_mr {
struct ocrdma_dev *dev;
u32 lkey;
@@ -390,4 +382,43 @@ static inline struct ocrdma_srq *get_ocrdma_srq(struct ib_srq *ibsrq)
return container_of(ibsrq, struct ocrdma_srq, ibsrq);
}
+
+static inline int ocrdma_get_num_posted_shift(struct ocrdma_qp *qp)
+{
+ return ((qp->dev->nic_info.dev_family == OCRDMA_GEN2_FAMILY &&
+ qp->id < 64) ? 24 : 16);
+}
+
+static inline int is_cqe_valid(struct ocrdma_cq *cq, struct ocrdma_cqe *cqe)
+{
+ int cqe_valid;
+ cqe_valid = le32_to_cpu(cqe->flags_status_srcqpn) & OCRDMA_CQE_VALID;
+ return ((cqe_valid == cq->phase) ? 1 : 0);
+}
+
+static inline int is_cqe_for_sq(struct ocrdma_cqe *cqe)
+{
+ return (le32_to_cpu(cqe->flags_status_srcqpn) &
+ OCRDMA_CQE_QTYPE) ? 0 : 1;
+}
+
+static inline int is_cqe_invalidated(struct ocrdma_cqe *cqe)
+{
+ return (le32_to_cpu(cqe->flags_status_srcqpn) &
+ OCRDMA_CQE_INVALIDATE) ? 1 : 0;
+}
+
+static inline int is_cqe_imm(struct ocrdma_cqe *cqe)
+{
+ return (le32_to_cpu(cqe->flags_status_srcqpn) &
+ OCRDMA_CQE_IMM) ? 1 : 0;
+}
+
+static inline int is_cqe_wr_imm(struct ocrdma_cqe *cqe)
+{
+ return (le32_to_cpu(cqe->flags_status_srcqpn) &
+ OCRDMA_CQE_WRITE_IMM) ? 1 : 0;
+}
+
+
#endif
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_hw.c b/drivers/infiniband/hw/ocrdma/ocrdma_hw.c
index 71942af4fce..0965278dd2e 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_hw.c
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_hw.c
@@ -128,7 +128,6 @@ static inline struct ocrdma_mqe *ocrdma_get_mqe(struct ocrdma_dev *dev)
static inline void ocrdma_mq_inc_head(struct ocrdma_dev *dev)
{
dev->mq.sq.head = (dev->mq.sq.head + 1) & (OCRDMA_MQ_LEN - 1);
- atomic_inc(&dev->mq.sq.used);
}
static inline void *ocrdma_get_mqe_rsp(struct ocrdma_dev *dev)
@@ -564,32 +563,19 @@ static int ocrdma_mbx_create_mq(struct ocrdma_dev *dev,
memset(cmd, 0, sizeof(*cmd));
num_pages = PAGES_4K_SPANNED(mq->va, mq->size);
- if (dev->nic_info.dev_family == OCRDMA_GEN2_FAMILY) {
- ocrdma_init_mch(&cmd->req, OCRDMA_CMD_CREATE_MQ,
- OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
- cmd->v0.pages = num_pages;
- cmd->v0.async_cqid_valid = OCRDMA_CREATE_MQ_ASYNC_CQ_VALID;
- cmd->v0.async_cqid_valid = (cq->id << 1);
- cmd->v0.cqid_ringsize |= (ocrdma_encoded_q_len(mq->len) <<
- OCRDMA_CREATE_MQ_RING_SIZE_SHIFT);
- cmd->v0.cqid_ringsize |=
- (cq->id << OCRDMA_CREATE_MQ_V0_CQ_ID_SHIFT);
- cmd->v0.valid = OCRDMA_CREATE_MQ_VALID;
- pa = &cmd->v0.pa[0];
- } else {
- ocrdma_init_mch(&cmd->req, OCRDMA_CMD_CREATE_MQ_EXT,
- OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
- cmd->req.rsvd_version = 1;
- cmd->v1.cqid_pages = num_pages;
- cmd->v1.cqid_pages |= (cq->id << OCRDMA_CREATE_MQ_CQ_ID_SHIFT);
- cmd->v1.async_cqid_valid = OCRDMA_CREATE_MQ_ASYNC_CQ_VALID;
- cmd->v1.async_event_bitmap = Bit(20);
- cmd->v1.async_cqid_ringsize = cq->id;
- cmd->v1.async_cqid_ringsize |= (ocrdma_encoded_q_len(mq->len) <<
- OCRDMA_CREATE_MQ_RING_SIZE_SHIFT);
- cmd->v1.valid = OCRDMA_CREATE_MQ_VALID;
- pa = &cmd->v1.pa[0];
- }
+ ocrdma_init_mch(&cmd->req, OCRDMA_CMD_CREATE_MQ_EXT,
+ OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
+ cmd->req.rsvd_version = 1;
+ cmd->cqid_pages = num_pages;
+ cmd->cqid_pages |= (cq->id << OCRDMA_CREATE_MQ_CQ_ID_SHIFT);
+ cmd->async_cqid_valid = OCRDMA_CREATE_MQ_ASYNC_CQ_VALID;
+ cmd->async_event_bitmap = Bit(20);
+ cmd->async_cqid_ringsize = cq->id;
+ cmd->async_cqid_ringsize |= (ocrdma_encoded_q_len(mq->len) <<
+ OCRDMA_CREATE_MQ_RING_SIZE_SHIFT);
+ cmd->valid = OCRDMA_CREATE_MQ_VALID;
+ pa = &cmd->pa[0];
+
ocrdma_build_q_pages(pa, num_pages, mq->dma, PAGE_SIZE_4K);
status = be_roce_mcc_cmd(dev->nic_info.netdev,
cmd, sizeof(*cmd), NULL, NULL);
@@ -745,7 +731,7 @@ static void ocrdma_dispatch_ibevent(struct ocrdma_dev *dev,
qp_event = 0;
srq_event = 0;
dev_event = 0;
- ocrdma_err("%s() unknown type=0x%x\n", __func__, type);
+ pr_err("%s() unknown type=0x%x\n", __func__, type);
break;
}
@@ -775,8 +761,8 @@ static void ocrdma_process_acqe(struct ocrdma_dev *dev, void *ae_cqe)
if (evt_code == OCRDMA_ASYNC_EVE_CODE)
ocrdma_dispatch_ibevent(dev, cqe);
else
- ocrdma_err("%s(%d) invalid evt code=0x%x\n",
- __func__, dev->id, evt_code);
+ pr_err("%s(%d) invalid evt code=0x%x\n", __func__,
+ dev->id, evt_code);
}
static void ocrdma_process_mcqe(struct ocrdma_dev *dev, struct ocrdma_mcqe *cqe)
@@ -790,8 +776,8 @@ static void ocrdma_process_mcqe(struct ocrdma_dev *dev, struct ocrdma_mcqe *cqe)
dev->mqe_ctx.cmd_done = true;
wake_up(&dev->mqe_ctx.cmd_wait);
} else
- ocrdma_err("%s() cqe for invalid tag0x%x.expected=0x%x\n",
- __func__, cqe->tag_lo, dev->mqe_ctx.tag);
+ pr_err("%s() cqe for invalid tag0x%x.expected=0x%x\n",
+ __func__, cqe->tag_lo, dev->mqe_ctx.tag);
}
static int ocrdma_mq_cq_handler(struct ocrdma_dev *dev, u16 cq_id)
@@ -810,7 +796,7 @@ static int ocrdma_mq_cq_handler(struct ocrdma_dev *dev, u16 cq_id)
else if (cqe->valid_ae_cmpl_cons & OCRDMA_MCQE_CMPL_MASK)
ocrdma_process_mcqe(dev, cqe);
else
- ocrdma_err("%s() cqe->compl is not set.\n", __func__);
+ pr_err("%s() cqe->compl is not set.\n", __func__);
memset(cqe, 0, sizeof(struct ocrdma_mcqe));
ocrdma_mcq_inc_tail(dev);
}
@@ -869,7 +855,7 @@ static void ocrdma_qp_cq_handler(struct ocrdma_dev *dev, u16 cq_idx)
cq = dev->cq_tbl[cq_idx];
if (cq == NULL) {
- ocrdma_err("%s%d invalid id=0x%x\n", __func__, dev->id, cq_idx);
+ pr_err("%s%d invalid id=0x%x\n", __func__, dev->id, cq_idx);
return;
}
spin_lock_irqsave(&cq->cq_lock, flags);
@@ -971,7 +957,7 @@ static int ocrdma_mbx_cmd(struct ocrdma_dev *dev, struct ocrdma_mqe *mqe)
rsp = ocrdma_get_mqe_rsp(dev);
ocrdma_copy_le32_to_cpu(mqe, rsp, (sizeof(*mqe)));
if (cqe_status || ext_status) {
- ocrdma_err
+ pr_err
("%s() opcode=0x%x, cqe_status=0x%x, ext_status=0x%x\n",
__func__,
(rsp->u.rsp.subsys_op & OCRDMA_MBX_RSP_OPCODE_MASK) >>
@@ -1353,8 +1339,8 @@ int ocrdma_mbx_create_cq(struct ocrdma_dev *dev, struct ocrdma_cq *cq,
if (dpp_cq)
return -EINVAL;
if (entries > dev->attr.max_cqe) {
- ocrdma_err("%s(%d) max_cqe=0x%x, requester_cqe=0x%x\n",
- __func__, dev->id, dev->attr.max_cqe, entries);
+ pr_err("%s(%d) max_cqe=0x%x, requester_cqe=0x%x\n",
+ __func__, dev->id, dev->attr.max_cqe, entries);
return -EINVAL;
}
if (dpp_cq && (dev->nic_info.dev_family != OCRDMA_GEN2_FAMILY))
@@ -1621,7 +1607,7 @@ int ocrdma_reg_mr(struct ocrdma_dev *dev,
status = ocrdma_mbx_reg_mr(dev, hwmr, pdid,
cur_pbl_cnt, hwmr->pbe_size, last);
if (status) {
- ocrdma_err("%s() status=%d\n", __func__, status);
+ pr_err("%s() status=%d\n", __func__, status);
return status;
}
/* if there is no more pbls to register then exit. */
@@ -1644,7 +1630,7 @@ int ocrdma_reg_mr(struct ocrdma_dev *dev,
break;
}
if (status)
- ocrdma_err("%s() err. status=%d\n", __func__, status);
+ pr_err("%s() err. status=%d\n", __func__, status);
return status;
}
@@ -1841,8 +1827,8 @@ static int ocrdma_set_create_qp_sq_cmd(struct ocrdma_create_qp_req *cmd,
status = ocrdma_build_q_conf(&max_wqe_allocated,
dev->attr.wqe_size, &hw_pages, &hw_page_size);
if (status) {
- ocrdma_err("%s() req. max_send_wr=0x%x\n", __func__,
- max_wqe_allocated);
+ pr_err("%s() req. max_send_wr=0x%x\n", __func__,
+ max_wqe_allocated);
return -EINVAL;
}
qp->sq.max_cnt = max_wqe_allocated;
@@ -1891,8 +1877,8 @@ static int ocrdma_set_create_qp_rq_cmd(struct ocrdma_create_qp_req *cmd,
status = ocrdma_build_q_conf(&max_rqe_allocated, dev->attr.rqe_size,
&hw_pages, &hw_page_size);
if (status) {
- ocrdma_err("%s() req. max_recv_wr=0x%x\n", __func__,
- attrs->cap.max_recv_wr + 1);
+ pr_err("%s() req. max_recv_wr=0x%x\n", __func__,
+ attrs->cap.max_recv_wr + 1);
return status;
}
qp->rq.max_cnt = max_rqe_allocated;
@@ -1900,7 +1886,7 @@ static int ocrdma_set_create_qp_rq_cmd(struct ocrdma_create_qp_req *cmd,
qp->rq.va = dma_alloc_coherent(&pdev->dev, len, &pa, GFP_KERNEL);
if (!qp->rq.va)
- return status;
+ return -ENOMEM;
memset(qp->rq.va, 0, len);
qp->rq.pa = pa;
qp->rq.len = len;
@@ -2087,10 +2073,10 @@ mbx_err:
if (qp->rq.va)
dma_free_coherent(&pdev->dev, qp->rq.len, qp->rq.va, qp->rq.pa);
rq_err:
- ocrdma_err("%s(%d) rq_err\n", __func__, dev->id);
+ pr_err("%s(%d) rq_err\n", __func__, dev->id);
dma_free_coherent(&pdev->dev, qp->sq.len, qp->sq.va, qp->sq.pa);
sq_err:
- ocrdma_err("%s(%d) sq_err\n", __func__, dev->id);
+ pr_err("%s(%d) sq_err\n", __func__, dev->id);
kfree(cmd);
return status;
}
@@ -2127,7 +2113,7 @@ int ocrdma_resolve_dgid(struct ocrdma_dev *dev, union ib_gid *dgid,
else if (rdma_link_local_addr(&in6))
rdma_get_ll_mac(&in6, mac_addr);
else {
- ocrdma_err("%s() fail to resolve mac_addr.\n", __func__);
+ pr_err("%s() fail to resolve mac_addr.\n", __func__);
return -EINVAL;
}
return 0;
@@ -2362,8 +2348,8 @@ int ocrdma_mbx_create_srq(struct ocrdma_srq *srq,
dev->attr.rqe_size,
&hw_pages, &hw_page_size);
if (status) {
- ocrdma_err("%s() req. max_wr=0x%x\n", __func__,
- srq_attr->attr.max_wr);
+ pr_err("%s() req. max_wr=0x%x\n", __func__,
+ srq_attr->attr.max_wr);
status = -EINVAL;
goto ret;
}
@@ -2614,7 +2600,7 @@ mq_err:
ocrdma_destroy_qp_eqs(dev);
qpeq_err:
ocrdma_destroy_eq(dev, &dev->meq);
- ocrdma_err("%s() status=%d\n", __func__, status);
+ pr_err("%s() status=%d\n", __func__, status);
return status;
}
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_main.c b/drivers/infiniband/hw/ocrdma/ocrdma_main.c
index 48928c8e777..ded416f1ade 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_main.c
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_main.c
@@ -378,7 +378,7 @@ static int ocrdma_alloc_resources(struct ocrdma_dev *dev)
spin_lock_init(&dev->flush_q_lock);
return 0;
alloc_err:
- ocrdma_err("%s(%d) error.\n", __func__, dev->id);
+ pr_err("%s(%d) error.\n", __func__, dev->id);
return -ENOMEM;
}
@@ -396,7 +396,7 @@ static struct ocrdma_dev *ocrdma_add(struct be_dev_info *dev_info)
dev = (struct ocrdma_dev *)ib_alloc_device(sizeof(struct ocrdma_dev));
if (!dev) {
- ocrdma_err("Unable to allocate ib device\n");
+ pr_err("Unable to allocate ib device\n");
return NULL;
}
dev->mbx_cmd = kzalloc(sizeof(struct ocrdma_mqe_emb_cmd), GFP_KERNEL);
@@ -437,7 +437,7 @@ init_err:
idr_err:
kfree(dev->mbx_cmd);
ib_dealloc_device(&dev->ibdev);
- ocrdma_err("%s() leaving. ret=%d\n", __func__, status);
+ pr_err("%s() leaving. ret=%d\n", __func__, status);
return NULL;
}
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_sli.h b/drivers/infiniband/hw/ocrdma/ocrdma_sli.h
index c75cbdfa87e..36b062da2ae 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_sli.h
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_sli.h
@@ -608,16 +608,8 @@ enum {
OCRDMA_CREATE_MQ_ASYNC_CQ_VALID = Bit(0)
};
-struct ocrdma_create_mq_v0 {
- u32 pages;
- u32 cqid_ringsize;
- u32 valid;
- u32 async_cqid_valid;
- u32 rsvd;
- struct ocrdma_pa pa[8];
-} __packed;
-
-struct ocrdma_create_mq_v1 {
+struct ocrdma_create_mq_req {
+ struct ocrdma_mbx_hdr req;
u32 cqid_pages;
u32 async_event_bitmap;
u32 async_cqid_ringsize;
@@ -627,14 +619,6 @@ struct ocrdma_create_mq_v1 {
struct ocrdma_pa pa[8];
} __packed;
-struct ocrdma_create_mq_req {
- struct ocrdma_mbx_hdr req;
- union {
- struct ocrdma_create_mq_v0 v0;
- struct ocrdma_create_mq_v1 v1;
- };
-} __packed;
-
struct ocrdma_create_mq_rsp {
struct ocrdma_mbx_rsp rsp;
u32 id;
@@ -1550,21 +1534,6 @@ struct ocrdma_cqe {
u32 flags_status_srcqpn; /* w3 */
} __packed;
-#define is_cqe_valid(cq, cqe) \
- (((le32_to_cpu(cqe->flags_status_srcqpn) & OCRDMA_CQE_VALID)\
- == cq->phase) ? 1 : 0)
-#define is_cqe_for_sq(cqe) \
- ((le32_to_cpu(cqe->flags_status_srcqpn) & OCRDMA_CQE_QTYPE) ? 0 : 1)
-#define is_cqe_for_rq(cqe) \
- ((le32_to_cpu(cqe->flags_status_srcqpn) & OCRDMA_CQE_QTYPE) ? 1 : 0)
-#define is_cqe_invalidated(cqe) \
- ((le32_to_cpu(cqe->flags_status_srcqpn) & OCRDMA_CQE_INVALIDATE) ? \
- 1 : 0)
-#define is_cqe_imm(cqe) \
- ((le32_to_cpu(cqe->flags_status_srcqpn) & OCRDMA_CQE_IMM) ? 1 : 0)
-#define is_cqe_wr_imm(cqe) \
- ((le32_to_cpu(cqe->flags_status_srcqpn) & OCRDMA_CQE_WRITE_IMM) ? 1 : 0)
-
struct ocrdma_sge {
u32 addr_hi;
u32 addr_lo;
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
index b29a4246ef4..dcfbab177fa 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
@@ -114,8 +114,8 @@ int ocrdma_query_port(struct ib_device *ibdev,
dev = get_ocrdma_dev(ibdev);
if (port > 1) {
- ocrdma_err("%s(%d) invalid_port=0x%x\n", __func__,
- dev->id, port);
+ pr_err("%s(%d) invalid_port=0x%x\n", __func__,
+ dev->id, port);
return -EINVAL;
}
netdev = dev->nic_info.netdev;
@@ -155,8 +155,7 @@ int ocrdma_modify_port(struct ib_device *ibdev, u8 port, int mask,
dev = get_ocrdma_dev(ibdev);
if (port > 1) {
- ocrdma_err("%s(%d) invalid_port=0x%x\n", __func__,
- dev->id, port);
+ pr_err("%s(%d) invalid_port=0x%x\n", __func__, dev->id, port);
return -EINVAL;
}
return 0;
@@ -398,7 +397,6 @@ struct ib_pd *ocrdma_alloc_pd(struct ib_device *ibdev,
kfree(pd);
return ERR_PTR(status);
}
- atomic_set(&pd->use_cnt, 0);
if (udata && context) {
status = ocrdma_copy_pd_uresp(pd, context, udata);
@@ -419,12 +417,6 @@ int ocrdma_dealloc_pd(struct ib_pd *ibpd)
int status;
u64 usr_db;
- if (atomic_read(&pd->use_cnt)) {
- ocrdma_err("%s(%d) pd=0x%x is in use.\n",
- __func__, dev->id, pd->id);
- status = -EFAULT;
- goto dealloc_err;
- }
status = ocrdma_mbx_dealloc_pd(dev, pd);
if (pd->uctx) {
u64 dpp_db = dev->nic_info.dpp_unmapped_addr +
@@ -436,7 +428,6 @@ int ocrdma_dealloc_pd(struct ib_pd *ibpd)
ocrdma_del_mmap(pd->uctx, usr_db, dev->nic_info.db_page_size);
}
kfree(pd);
-dealloc_err:
return status;
}
@@ -450,8 +441,8 @@ static struct ocrdma_mr *ocrdma_alloc_lkey(struct ib_pd *ibpd,
struct ocrdma_dev *dev = pd->dev;
if (acc & IB_ACCESS_REMOTE_WRITE && !(acc & IB_ACCESS_LOCAL_WRITE)) {
- ocrdma_err("%s(%d) leaving err, invalid access rights\n",
- __func__, dev->id);
+ pr_err("%s(%d) leaving err, invalid access rights\n",
+ __func__, dev->id);
return ERR_PTR(-EINVAL);
}
@@ -474,7 +465,6 @@ static struct ocrdma_mr *ocrdma_alloc_lkey(struct ib_pd *ibpd,
return ERR_PTR(-ENOMEM);
}
mr->pd = pd;
- atomic_inc(&pd->use_cnt);
mr->ibmr.lkey = mr->hwmr.lkey;
if (mr->hwmr.remote_wr || mr->hwmr.remote_rd)
mr->ibmr.rkey = mr->hwmr.lkey;
@@ -664,7 +654,6 @@ struct ib_mr *ocrdma_reg_user_mr(struct ib_pd *ibpd, u64 start, u64 len,
if (status)
goto mbx_err;
mr->pd = pd;
- atomic_inc(&pd->use_cnt);
mr->ibmr.lkey = mr->hwmr.lkey;
if (mr->hwmr.remote_wr || mr->hwmr.remote_rd)
mr->ibmr.rkey = mr->hwmr.lkey;
@@ -689,7 +678,6 @@ int ocrdma_dereg_mr(struct ib_mr *ib_mr)
if (mr->hwmr.fr_mr == 0)
ocrdma_free_mr_pbl_tbl(dev, &mr->hwmr);
- atomic_dec(&mr->pd->use_cnt);
/* it could be user registered memory. */
if (mr->umem)
ib_umem_release(mr->umem);
@@ -714,8 +702,8 @@ static int ocrdma_copy_cq_uresp(struct ocrdma_cq *cq, struct ib_udata *udata,
uresp.phase_change = cq->phase_change ? 1 : 0;
status = ib_copy_to_udata(udata, &uresp, sizeof(uresp));
if (status) {
- ocrdma_err("%s(%d) copy error cqid=0x%x.\n",
- __func__, cq->dev->id, cq->id);
+ pr_err("%s(%d) copy error cqid=0x%x.\n",
+ __func__, cq->dev->id, cq->id);
goto err;
}
uctx = get_ocrdma_ucontext(ib_ctx);
@@ -752,7 +740,6 @@ struct ib_cq *ocrdma_create_cq(struct ib_device *ibdev, int entries, int vector,
spin_lock_init(&cq->cq_lock);
spin_lock_init(&cq->comp_handler_lock);
- atomic_set(&cq->use_cnt, 0);
INIT_LIST_HEAD(&cq->sq_head);
INIT_LIST_HEAD(&cq->rq_head);
cq->dev = dev;
@@ -799,9 +786,6 @@ int ocrdma_destroy_cq(struct ib_cq *ibcq)
struct ocrdma_cq *cq = get_ocrdma_cq(ibcq);
struct ocrdma_dev *dev = cq->dev;
- if (atomic_read(&cq->use_cnt))
- return -EINVAL;
-
status = ocrdma_mbx_destroy_cq(dev, cq);
if (cq->ucontext) {
@@ -837,57 +821,56 @@ static int ocrdma_check_qp_params(struct ib_pd *ibpd, struct ocrdma_dev *dev,
if (attrs->qp_type != IB_QPT_GSI &&
attrs->qp_type != IB_QPT_RC &&
attrs->qp_type != IB_QPT_UD) {
- ocrdma_err("%s(%d) unsupported qp type=0x%x requested\n",
- __func__, dev->id, attrs->qp_type);
+ pr_err("%s(%d) unsupported qp type=0x%x requested\n",
+ __func__, dev->id, attrs->qp_type);
return -EINVAL;
}
if (attrs->cap.max_send_wr > dev->attr.max_wqe) {
- ocrdma_err("%s(%d) unsupported send_wr=0x%x requested\n",
- __func__, dev->id, attrs->cap.max_send_wr);
- ocrdma_err("%s(%d) supported send_wr=0x%x\n",
- __func__, dev->id, dev->attr.max_wqe);
+ pr_err("%s(%d) unsupported send_wr=0x%x requested\n",
+ __func__, dev->id, attrs->cap.max_send_wr);
+ pr_err("%s(%d) supported send_wr=0x%x\n",
+ __func__, dev->id, dev->attr.max_wqe);
return -EINVAL;
}
if (!attrs->srq && (attrs->cap.max_recv_wr > dev->attr.max_rqe)) {
- ocrdma_err("%s(%d) unsupported recv_wr=0x%x requested\n",
- __func__, dev->id, attrs->cap.max_recv_wr);
- ocrdma_err("%s(%d) supported recv_wr=0x%x\n",
- __func__, dev->id, dev->attr.max_rqe);
+ pr_err("%s(%d) unsupported recv_wr=0x%x requested\n",
+ __func__, dev->id, attrs->cap.max_recv_wr);
+ pr_err("%s(%d) supported recv_wr=0x%x\n",
+ __func__, dev->id, dev->attr.max_rqe);
return -EINVAL;
}
if (attrs->cap.max_inline_data > dev->attr.max_inline_data) {
- ocrdma_err("%s(%d) unsupported inline data size=0x%x"
- " requested\n", __func__, dev->id,
- attrs->cap.max_inline_data);
- ocrdma_err("%s(%d) supported inline data size=0x%x\n",
- __func__, dev->id, dev->attr.max_inline_data);
+ pr_err("%s(%d) unsupported inline data size=0x%x requested\n",
+ __func__, dev->id, attrs->cap.max_inline_data);
+ pr_err("%s(%d) supported inline data size=0x%x\n",
+ __func__, dev->id, dev->attr.max_inline_data);
return -EINVAL;
}
if (attrs->cap.max_send_sge > dev->attr.max_send_sge) {
- ocrdma_err("%s(%d) unsupported send_sge=0x%x requested\n",
- __func__, dev->id, attrs->cap.max_send_sge);
- ocrdma_err("%s(%d) supported send_sge=0x%x\n",
- __func__, dev->id, dev->attr.max_send_sge);
+ pr_err("%s(%d) unsupported send_sge=0x%x requested\n",
+ __func__, dev->id, attrs->cap.max_send_sge);
+ pr_err("%s(%d) supported send_sge=0x%x\n",
+ __func__, dev->id, dev->attr.max_send_sge);
return -EINVAL;
}
if (attrs->cap.max_recv_sge > dev->attr.max_recv_sge) {
- ocrdma_err("%s(%d) unsupported recv_sge=0x%x requested\n",
- __func__, dev->id, attrs->cap.max_recv_sge);
- ocrdma_err("%s(%d) supported recv_sge=0x%x\n",
- __func__, dev->id, dev->attr.max_recv_sge);
+ pr_err("%s(%d) unsupported recv_sge=0x%x requested\n",
+ __func__, dev->id, attrs->cap.max_recv_sge);
+ pr_err("%s(%d) supported recv_sge=0x%x\n",
+ __func__, dev->id, dev->attr.max_recv_sge);
return -EINVAL;
}
/* unprivileged user space cannot create special QP */
if (ibpd->uobject && attrs->qp_type == IB_QPT_GSI) {
- ocrdma_err
+ pr_err
("%s(%d) Userspace can't create special QPs of type=0x%x\n",
__func__, dev->id, attrs->qp_type);
return -EINVAL;
}
/* allow creating only one GSI type of QP */
if (attrs->qp_type == IB_QPT_GSI && dev->gsi_qp_created) {
- ocrdma_err("%s(%d) GSI special QPs already created.\n",
- __func__, dev->id);
+ pr_err("%s(%d) GSI special QPs already created.\n",
+ __func__, dev->id);
return -EINVAL;
}
/* verify consumer QPs are not trying to use GSI QP's CQ */
@@ -896,8 +879,8 @@ static int ocrdma_check_qp_params(struct ib_pd *ibpd, struct ocrdma_dev *dev,
(dev->gsi_sqcq == get_ocrdma_cq(attrs->recv_cq)) ||
(dev->gsi_rqcq == get_ocrdma_cq(attrs->send_cq)) ||
(dev->gsi_rqcq == get_ocrdma_cq(attrs->recv_cq))) {
- ocrdma_err("%s(%d) Consumer QP cannot use GSI CQs.\n",
- __func__, dev->id);
+ pr_err("%s(%d) Consumer QP cannot use GSI CQs.\n",
+ __func__, dev->id);
return -EINVAL;
}
}
@@ -949,7 +932,7 @@ static int ocrdma_copy_qp_uresp(struct ocrdma_qp *qp,
}
status = ib_copy_to_udata(udata, &uresp, sizeof(uresp));
if (status) {
- ocrdma_err("%s(%d) user copy error.\n", __func__, dev->id);
+ pr_err("%s(%d) user copy error.\n", __func__, dev->id);
goto err;
}
status = ocrdma_add_mmap(pd->uctx, uresp.sq_page_addr[0],
@@ -1023,15 +1006,6 @@ static void ocrdma_set_qp_init_params(struct ocrdma_qp *qp,
qp->state = OCRDMA_QPS_RST;
}
-static void ocrdma_set_qp_use_cnt(struct ocrdma_qp *qp, struct ocrdma_pd *pd)
-{
- atomic_inc(&pd->use_cnt);
- atomic_inc(&qp->sq_cq->use_cnt);
- atomic_inc(&qp->rq_cq->use_cnt);
- if (qp->srq)
- atomic_inc(&qp->srq->use_cnt);
- qp->ibqp.qp_num = qp->id;
-}
static void ocrdma_store_gsi_qp_cq(struct ocrdma_dev *dev,
struct ib_qp_init_attr *attrs)
@@ -1099,7 +1073,7 @@ struct ib_qp *ocrdma_create_qp(struct ib_pd *ibpd,
goto cpy_err;
}
ocrdma_store_gsi_qp_cq(dev, attrs);
- ocrdma_set_qp_use_cnt(qp, pd);
+ qp->ibqp.qp_num = qp->id;
mutex_unlock(&dev->dev_lock);
return &qp->ibqp;
@@ -1112,7 +1086,7 @@ mbx_err:
kfree(qp->wqe_wr_id_tbl);
kfree(qp->rqe_wr_id_tbl);
kfree(qp);
- ocrdma_err("%s(%d) error=%d\n", __func__, dev->id, status);
+ pr_err("%s(%d) error=%d\n", __func__, dev->id, status);
gen_err:
return ERR_PTR(status);
}
@@ -1162,10 +1136,10 @@ int ocrdma_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
spin_unlock_irqrestore(&qp->q_lock, flags);
if (!ib_modify_qp_is_ok(old_qps, new_qps, ibqp->qp_type, attr_mask)) {
- ocrdma_err("%s(%d) invalid attribute mask=0x%x specified for "
- "qpn=0x%x of type=0x%x old_qps=0x%x, new_qps=0x%x\n",
- __func__, dev->id, attr_mask, qp->id, ibqp->qp_type,
- old_qps, new_qps);
+ pr_err("%s(%d) invalid attribute mask=0x%x specified for\n"
+ "qpn=0x%x of type=0x%x old_qps=0x%x, new_qps=0x%x\n",
+ __func__, dev->id, attr_mask, qp->id, ibqp->qp_type,
+ old_qps, new_qps);
goto param_err;
}
@@ -1475,11 +1449,6 @@ int ocrdma_destroy_qp(struct ib_qp *ibqp)
ocrdma_del_flush_qp(qp);
- atomic_dec(&qp->pd->use_cnt);
- atomic_dec(&qp->sq_cq->use_cnt);
- atomic_dec(&qp->rq_cq->use_cnt);
- if (qp->srq)
- atomic_dec(&qp->srq->use_cnt);
kfree(qp->wqe_wr_id_tbl);
kfree(qp->rqe_wr_id_tbl);
kfree(qp);
@@ -1565,14 +1534,12 @@ struct ib_srq *ocrdma_create_srq(struct ib_pd *ibpd,
goto arm_err;
}
- atomic_set(&srq->use_cnt, 0);
if (udata) {
status = ocrdma_copy_srq_uresp(srq, udata);
if (status)
goto arm_err;
}
- atomic_inc(&pd->use_cnt);
return &srq->ibsrq;
arm_err:
@@ -1618,18 +1585,12 @@ int ocrdma_destroy_srq(struct ib_srq *ibsrq)
srq = get_ocrdma_srq(ibsrq);
dev = srq->dev;
- if (atomic_read(&srq->use_cnt)) {
- ocrdma_err("%s(%d) err, srq=0x%x in use\n",
- __func__, dev->id, srq->id);
- return -EAGAIN;
- }
status = ocrdma_mbx_destroy_srq(dev, srq);
if (srq->pd->uctx)
ocrdma_del_mmap(srq->pd->uctx, (u64) srq->rq.pa, srq->rq.len);
- atomic_dec(&srq->pd->use_cnt);
kfree(srq->idx_bit_fields);
kfree(srq->rqe_wr_id_tbl);
kfree(srq);
@@ -1677,9 +1638,9 @@ static int ocrdma_build_inline_sges(struct ocrdma_qp *qp,
{
if (wr->send_flags & IB_SEND_INLINE) {
if (wr->sg_list[0].length > qp->max_inline_data) {
- ocrdma_err("%s() supported_len=0x%x,"
- " unspported len req=0x%x\n", __func__,
- qp->max_inline_data, wr->sg_list[0].length);
+ pr_err("%s() supported_len=0x%x,\n"
+ " unspported len req=0x%x\n", __func__,
+ qp->max_inline_data, wr->sg_list[0].length);
return -EINVAL;
}
memcpy(sge,
@@ -1773,12 +1734,14 @@ int ocrdma_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
spin_lock_irqsave(&qp->q_lock, flags);
if (qp->state != OCRDMA_QPS_RTS && qp->state != OCRDMA_QPS_SQD) {
spin_unlock_irqrestore(&qp->q_lock, flags);
+ *bad_wr = wr;
return -EINVAL;
}
while (wr) {
if (ocrdma_hwq_free_cnt(&qp->sq) == 0 ||
wr->num_sge > qp->sq.max_sges) {
+ *bad_wr = wr;
status = -ENOMEM;
break;
}
@@ -1856,7 +1819,7 @@ int ocrdma_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
static void ocrdma_ring_rq_db(struct ocrdma_qp *qp)
{
- u32 val = qp->rq.dbid | (1 << OCRDMA_GET_NUM_POSTED_SHIFT_VAL(qp));
+ u32 val = qp->rq.dbid | (1 << ocrdma_get_num_posted_shift(qp));
iowrite32(val, qp->rq_db);
}
@@ -2094,8 +2057,8 @@ static void ocrdma_update_wc(struct ocrdma_qp *qp, struct ib_wc *ibwc,
break;
default:
ibwc->status = IB_WC_GENERAL_ERR;
- ocrdma_err("%s() invalid opcode received = 0x%x\n",
- __func__, hdr->cw & OCRDMA_WQE_OPCODE_MASK);
+ pr_err("%s() invalid opcode received = 0x%x\n",
+ __func__, hdr->cw & OCRDMA_WQE_OPCODE_MASK);
break;
};
}
diff --git a/drivers/infiniband/hw/qib/Kconfig b/drivers/infiniband/hw/qib/Kconfig
index 1e603a37506..d03ca4c1ff2 100644
--- a/drivers/infiniband/hw/qib/Kconfig
+++ b/drivers/infiniband/hw/qib/Kconfig
@@ -5,3 +5,11 @@ config INFINIBAND_QIB
This is a low-level driver for Intel PCIe QLE InfiniBand host
channel adapters. This driver does not support the Intel
HyperTransport card (model QHT7140).
+
+config INFINIBAND_QIB_DCA
+ bool "QIB DCA support"
+ depends on INFINIBAND_QIB && DCA && SMP && GENERIC_HARDIRQS && !(INFINIBAND_QIB=y && DCA=m)
+ default y
+ ---help---
+ Setting this enables DCA support on some Intel chip sets
+ with the iba7322 HCA.
diff --git a/drivers/infiniband/hw/qib/Makefile b/drivers/infiniband/hw/qib/Makefile
index f12d7bb8b39..57f8103e51f 100644
--- a/drivers/infiniband/hw/qib/Makefile
+++ b/drivers/infiniband/hw/qib/Makefile
@@ -13,3 +13,4 @@ ib_qib-$(CONFIG_PCI_MSI) += qib_iba6120.o
ib_qib-$(CONFIG_X86_64) += qib_wc_x86_64.o
ib_qib-$(CONFIG_PPC64) += qib_wc_ppc64.o
+ib_qib-$(CONFIG_DEBUG_FS) += qib_debugfs.o
diff --git a/drivers/infiniband/hw/qib/qib.h b/drivers/infiniband/hw/qib/qib.h
index 4d11575c201..4a9af795b88 100644
--- a/drivers/infiniband/hw/qib/qib.h
+++ b/drivers/infiniband/hw/qib/qib.h
@@ -1,7 +1,7 @@
#ifndef _QIB_KERNEL_H
#define _QIB_KERNEL_H
/*
- * Copyright (c) 2012 Intel Corporation. All rights reserved.
+ * Copyright (c) 2012, 2013 Intel Corporation. All rights reserved.
* Copyright (c) 2006 - 2012 QLogic Corporation. All rights reserved.
* Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved.
*
@@ -51,6 +51,7 @@
#include <linux/completion.h>
#include <linux/kref.h>
#include <linux/sched.h>
+#include <linux/kthread.h>
#include "qib_common.h"
#include "qib_verbs.h"
@@ -114,6 +115,11 @@ struct qib_eep_log_mask {
/*
* Below contains all data related to a single context (formerly called port).
*/
+
+#ifdef CONFIG_DEBUG_FS
+struct qib_opcode_stats_perctx;
+#endif
+
struct qib_ctxtdata {
void **rcvegrbuf;
dma_addr_t *rcvegrbuf_phys;
@@ -154,6 +160,8 @@ struct qib_ctxtdata {
*/
/* instead of calculating it */
unsigned ctxt;
+ /* local node of context */
+ int node_id;
/* non-zero if ctxt is being shared. */
u16 subctxt_cnt;
/* non-zero if ctxt is being shared. */
@@ -222,12 +230,15 @@ struct qib_ctxtdata {
u8 redirect_seq_cnt;
/* ctxt rcvhdrq head offset */
u32 head;
- u32 pkt_count;
/* lookaside fields */
struct qib_qp *lookaside_qp;
u32 lookaside_qpn;
/* QPs waiting for context processing */
struct list_head qp_wait_list;
+#ifdef CONFIG_DEBUG_FS
+ /* verbs stats per CTX */
+ struct qib_opcode_stats_perctx *opstats;
+#endif
};
struct qib_sge_state;
@@ -428,9 +439,19 @@ struct qib_verbs_txreq {
#define ACTIVITY_TIMER 5
#define MAX_NAME_SIZE 64
+
+#ifdef CONFIG_INFINIBAND_QIB_DCA
+struct qib_irq_notify;
+#endif
+
struct qib_msix_entry {
struct msix_entry msix;
void *arg;
+#ifdef CONFIG_INFINIBAND_QIB_DCA
+ int dca;
+ int rcv;
+ struct qib_irq_notify *notifier;
+#endif
char name[MAX_NAME_SIZE];
cpumask_var_t mask;
};
@@ -828,6 +849,9 @@ struct qib_devdata {
struct qib_ctxtdata *);
void (*f_writescratch)(struct qib_devdata *, u32);
int (*f_tempsense_rd)(struct qib_devdata *, int regnum);
+#ifdef CONFIG_INFINIBAND_QIB_DCA
+ int (*f_notify_dca)(struct qib_devdata *, unsigned long event);
+#endif
char *boardname; /* human readable board info */
@@ -1075,6 +1099,10 @@ struct qib_devdata {
u16 psxmitwait_check_rate;
/* high volume overflow errors defered to tasklet */
struct tasklet_struct error_tasklet;
+ /* per device cq worker */
+ struct kthread_worker *worker;
+
+ int assigned_node_id; /* NUMA node closest to HCA */
};
/* hol_state values */
@@ -1154,7 +1182,7 @@ int qib_create_rcvhdrq(struct qib_devdata *, struct qib_ctxtdata *);
int qib_setup_eagerbufs(struct qib_ctxtdata *);
void qib_set_ctxtcnt(struct qib_devdata *);
int qib_create_ctxts(struct qib_devdata *dd);
-struct qib_ctxtdata *qib_create_ctxtdata(struct qib_pportdata *, u32);
+struct qib_ctxtdata *qib_create_ctxtdata(struct qib_pportdata *, u32, int);
void qib_init_pportdata(struct qib_pportdata *, struct qib_devdata *, u8, u8);
void qib_free_ctxtdata(struct qib_devdata *, struct qib_ctxtdata *);
@@ -1320,7 +1348,7 @@ static inline int __qib_sdma_running(struct qib_pportdata *ppd)
return ppd->sdma_state.current_state == qib_sdma_state_s99_running;
}
int qib_sdma_running(struct qib_pportdata *);
-
+void dump_sdma_state(struct qib_pportdata *ppd);
void __qib_sdma_process_event(struct qib_pportdata *, enum qib_sdma_events);
void qib_sdma_process_event(struct qib_pportdata *, enum qib_sdma_events);
@@ -1445,6 +1473,7 @@ extern unsigned qib_n_krcv_queues;
extern unsigned qib_sdma_fetch_arb;
extern unsigned qib_compat_ddr_negotiate;
extern int qib_special_trigger;
+extern unsigned qib_numa_aware;
extern struct mutex qib_mutex;
@@ -1474,27 +1503,23 @@ extern struct mutex qib_mutex;
* first to avoid possible serial port delays from printk.
*/
#define qib_early_err(dev, fmt, ...) \
- do { \
- dev_err(dev, fmt, ##__VA_ARGS__); \
- } while (0)
+ dev_err(dev, fmt, ##__VA_ARGS__)
#define qib_dev_err(dd, fmt, ...) \
- do { \
- dev_err(&(dd)->pcidev->dev, "%s: " fmt, \
- qib_get_unit_name((dd)->unit), ##__VA_ARGS__); \
- } while (0)
+ dev_err(&(dd)->pcidev->dev, "%s: " fmt, \
+ qib_get_unit_name((dd)->unit), ##__VA_ARGS__)
+
+#define qib_dev_warn(dd, fmt, ...) \
+ dev_warn(&(dd)->pcidev->dev, "%s: " fmt, \
+ qib_get_unit_name((dd)->unit), ##__VA_ARGS__)
#define qib_dev_porterr(dd, port, fmt, ...) \
- do { \
- dev_err(&(dd)->pcidev->dev, "%s: IB%u:%u " fmt, \
- qib_get_unit_name((dd)->unit), (dd)->unit, (port), \
- ##__VA_ARGS__); \
- } while (0)
+ dev_err(&(dd)->pcidev->dev, "%s: IB%u:%u " fmt, \
+ qib_get_unit_name((dd)->unit), (dd)->unit, (port), \
+ ##__VA_ARGS__)
#define qib_devinfo(pcidev, fmt, ...) \
- do { \
- dev_info(&(pcidev)->dev, fmt, ##__VA_ARGS__); \
- } while (0)
+ dev_info(&(pcidev)->dev, fmt, ##__VA_ARGS__)
/*
* this is used for formatting hw error messages...
diff --git a/drivers/infiniband/hw/qib/qib_common.h b/drivers/infiniband/hw/qib/qib_common.h
index d39e0183ff8..4f255b723ff 100644
--- a/drivers/infiniband/hw/qib/qib_common.h
+++ b/drivers/infiniband/hw/qib/qib_common.h
@@ -279,7 +279,7 @@ struct qib_base_info {
* may not be implemented; the user code must deal with this if it
* cares, or it must abort after initialization reports the difference.
*/
-#define QIB_USER_SWMINOR 11
+#define QIB_USER_SWMINOR 12
#define QIB_USER_SWVERSION ((QIB_USER_SWMAJOR << 16) | QIB_USER_SWMINOR)
diff --git a/drivers/infiniband/hw/qib/qib_cq.c b/drivers/infiniband/hw/qib/qib_cq.c
index 5246aa486bb..ab4e11cfab1 100644
--- a/drivers/infiniband/hw/qib/qib_cq.c
+++ b/drivers/infiniband/hw/qib/qib_cq.c
@@ -1,4 +1,5 @@
/*
+ * Copyright (c) 2013 Intel Corporation. All rights reserved.
* Copyright (c) 2006, 2007, 2008, 2010 QLogic Corporation. All rights reserved.
* Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved.
*
@@ -34,8 +35,10 @@
#include <linux/err.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
+#include <linux/kthread.h>
#include "qib_verbs.h"
+#include "qib.h"
/**
* qib_cq_enter - add a new entry to the completion queue
@@ -102,13 +105,18 @@ void qib_cq_enter(struct qib_cq *cq, struct ib_wc *entry, int solicited)
if (cq->notify == IB_CQ_NEXT_COMP ||
(cq->notify == IB_CQ_SOLICITED &&
(solicited || entry->status != IB_WC_SUCCESS))) {
- cq->notify = IB_CQ_NONE;
- cq->triggered++;
+ struct kthread_worker *worker;
/*
* This will cause send_complete() to be called in
* another thread.
*/
- queue_work(qib_cq_wq, &cq->comptask);
+ smp_rmb();
+ worker = cq->dd->worker;
+ if (likely(worker)) {
+ cq->notify = IB_CQ_NONE;
+ cq->triggered++;
+ queue_kthread_work(worker, &cq->comptask);
+ }
}
spin_unlock_irqrestore(&cq->lock, flags);
@@ -163,7 +171,7 @@ bail:
return npolled;
}
-static void send_complete(struct work_struct *work)
+static void send_complete(struct kthread_work *work)
{
struct qib_cq *cq = container_of(work, struct qib_cq, comptask);
@@ -287,11 +295,12 @@ struct ib_cq *qib_create_cq(struct ib_device *ibdev, int entries,
* The number of entries should be >= the number requested or return
* an error.
*/
+ cq->dd = dd_from_dev(dev);
cq->ibcq.cqe = entries;
cq->notify = IB_CQ_NONE;
cq->triggered = 0;
spin_lock_init(&cq->lock);
- INIT_WORK(&cq->comptask, send_complete);
+ init_kthread_work(&cq->comptask, send_complete);
wc->head = 0;
wc->tail = 0;
cq->queue = wc;
@@ -323,7 +332,7 @@ int qib_destroy_cq(struct ib_cq *ibcq)
struct qib_ibdev *dev = to_idev(ibcq->device);
struct qib_cq *cq = to_icq(ibcq);
- flush_work(&cq->comptask);
+ flush_kthread_work(&cq->comptask);
spin_lock(&dev->n_cqs_lock);
dev->n_cqs_allocated--;
spin_unlock(&dev->n_cqs_lock);
@@ -483,3 +492,49 @@ bail_free:
bail:
return ret;
}
+
+int qib_cq_init(struct qib_devdata *dd)
+{
+ int ret = 0;
+ int cpu;
+ struct task_struct *task;
+
+ if (dd->worker)
+ return 0;
+ dd->worker = kzalloc(sizeof(*dd->worker), GFP_KERNEL);
+ if (!dd->worker)
+ return -ENOMEM;
+ init_kthread_worker(dd->worker);
+ task = kthread_create_on_node(
+ kthread_worker_fn,
+ dd->worker,
+ dd->assigned_node_id,
+ "qib_cq%d", dd->unit);
+ if (IS_ERR(task))
+ goto task_fail;
+ cpu = cpumask_first(cpumask_of_node(dd->assigned_node_id));
+ kthread_bind(task, cpu);
+ wake_up_process(task);
+out:
+ return ret;
+task_fail:
+ ret = PTR_ERR(task);
+ kfree(dd->worker);
+ dd->worker = NULL;
+ goto out;
+}
+
+void qib_cq_exit(struct qib_devdata *dd)
+{
+ struct kthread_worker *worker;
+
+ worker = dd->worker;
+ if (!worker)
+ return;
+ /* blocks future queuing from send_complete() */
+ dd->worker = NULL;
+ smp_wmb();
+ flush_kthread_worker(worker);
+ kthread_stop(worker->task);
+ kfree(worker);
+}
diff --git a/drivers/infiniband/hw/qib/qib_debugfs.c b/drivers/infiniband/hw/qib/qib_debugfs.c
new file mode 100644
index 00000000000..799a0c3bffc
--- /dev/null
+++ b/drivers/infiniband/hw/qib/qib_debugfs.c
@@ -0,0 +1,283 @@
+#ifdef CONFIG_DEBUG_FS
+/*
+ * Copyright (c) 2013 Intel Corporation. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
+#include <linux/kernel.h>
+#include <linux/export.h>
+
+#include "qib.h"
+#include "qib_verbs.h"
+#include "qib_debugfs.h"
+
+static struct dentry *qib_dbg_root;
+
+#define DEBUGFS_FILE(name) \
+static const struct seq_operations _##name##_seq_ops = { \
+ .start = _##name##_seq_start, \
+ .next = _##name##_seq_next, \
+ .stop = _##name##_seq_stop, \
+ .show = _##name##_seq_show \
+}; \
+static int _##name##_open(struct inode *inode, struct file *s) \
+{ \
+ struct seq_file *seq; \
+ int ret; \
+ ret = seq_open(s, &_##name##_seq_ops); \
+ if (ret) \
+ return ret; \
+ seq = s->private_data; \
+ seq->private = inode->i_private; \
+ return 0; \
+} \
+static const struct file_operations _##name##_file_ops = { \
+ .owner = THIS_MODULE, \
+ .open = _##name##_open, \
+ .read = seq_read, \
+ .llseek = seq_lseek, \
+ .release = seq_release \
+};
+
+#define DEBUGFS_FILE_CREATE(name) \
+do { \
+ struct dentry *ent; \
+ ent = debugfs_create_file(#name , 0400, ibd->qib_ibdev_dbg, \
+ ibd, &_##name##_file_ops); \
+ if (!ent) \
+ pr_warn("create of " #name " failed\n"); \
+} while (0)
+
+static void *_opcode_stats_seq_start(struct seq_file *s, loff_t *pos)
+{
+ struct qib_opcode_stats_perctx *opstats;
+
+ if (*pos >= ARRAY_SIZE(opstats->stats))
+ return NULL;
+ return pos;
+}
+
+static void *_opcode_stats_seq_next(struct seq_file *s, void *v, loff_t *pos)
+{
+ struct qib_opcode_stats_perctx *opstats;
+
+ ++*pos;
+ if (*pos >= ARRAY_SIZE(opstats->stats))
+ return NULL;
+ return pos;
+}
+
+
+static void _opcode_stats_seq_stop(struct seq_file *s, void *v)
+{
+ /* nothing allocated */
+}
+
+static int _opcode_stats_seq_show(struct seq_file *s, void *v)
+{
+ loff_t *spos = v;
+ loff_t i = *spos, j;
+ u64 n_packets = 0, n_bytes = 0;
+ struct qib_ibdev *ibd = (struct qib_ibdev *)s->private;
+ struct qib_devdata *dd = dd_from_dev(ibd);
+
+ for (j = 0; j < dd->first_user_ctxt; j++) {
+ if (!dd->rcd[j])
+ continue;
+ n_packets += dd->rcd[j]->opstats->stats[i].n_packets;
+ n_bytes += dd->rcd[j]->opstats->stats[i].n_bytes;
+ }
+ if (!n_packets && !n_bytes)
+ return SEQ_SKIP;
+ seq_printf(s, "%02llx %llu/%llu\n", i,
+ (unsigned long long) n_packets,
+ (unsigned long long) n_bytes);
+
+ return 0;
+}
+
+DEBUGFS_FILE(opcode_stats)
+
+static void *_ctx_stats_seq_start(struct seq_file *s, loff_t *pos)
+{
+ struct qib_ibdev *ibd = (struct qib_ibdev *)s->private;
+ struct qib_devdata *dd = dd_from_dev(ibd);
+
+ if (!*pos)
+ return SEQ_START_TOKEN;
+ if (*pos >= dd->first_user_ctxt)
+ return NULL;
+ return pos;
+}
+
+static void *_ctx_stats_seq_next(struct seq_file *s, void *v, loff_t *pos)
+{
+ struct qib_ibdev *ibd = (struct qib_ibdev *)s->private;
+ struct qib_devdata *dd = dd_from_dev(ibd);
+
+ if (v == SEQ_START_TOKEN)
+ return pos;
+
+ ++*pos;
+ if (*pos >= dd->first_user_ctxt)
+ return NULL;
+ return pos;
+}
+
+static void _ctx_stats_seq_stop(struct seq_file *s, void *v)
+{
+ /* nothing allocated */
+}
+
+static int _ctx_stats_seq_show(struct seq_file *s, void *v)
+{
+ loff_t *spos;
+ loff_t i, j;
+ u64 n_packets = 0;
+ struct qib_ibdev *ibd = (struct qib_ibdev *)s->private;
+ struct qib_devdata *dd = dd_from_dev(ibd);
+
+ if (v == SEQ_START_TOKEN) {
+ seq_puts(s, "Ctx:npkts\n");
+ return 0;
+ }
+
+ spos = v;
+ i = *spos;
+
+ if (!dd->rcd[i])
+ return SEQ_SKIP;
+
+ for (j = 0; j < ARRAY_SIZE(dd->rcd[i]->opstats->stats); j++)
+ n_packets += dd->rcd[i]->opstats->stats[j].n_packets;
+
+ if (!n_packets)
+ return SEQ_SKIP;
+
+ seq_printf(s, " %llu:%llu\n", i, n_packets);
+ return 0;
+}
+
+DEBUGFS_FILE(ctx_stats)
+
+static void *_qp_stats_seq_start(struct seq_file *s, loff_t *pos)
+{
+ struct qib_qp_iter *iter;
+ loff_t n = *pos;
+
+ iter = qib_qp_iter_init(s->private);
+ if (!iter)
+ return NULL;
+
+ while (n--) {
+ if (qib_qp_iter_next(iter)) {
+ kfree(iter);
+ return NULL;
+ }
+ }
+
+ return iter;
+}
+
+static void *_qp_stats_seq_next(struct seq_file *s, void *iter_ptr,
+ loff_t *pos)
+{
+ struct qib_qp_iter *iter = iter_ptr;
+
+ (*pos)++;
+
+ if (qib_qp_iter_next(iter)) {
+ kfree(iter);
+ return NULL;
+ }
+
+ return iter;
+}
+
+static void _qp_stats_seq_stop(struct seq_file *s, void *iter_ptr)
+{
+ /* nothing for now */
+}
+
+static int _qp_stats_seq_show(struct seq_file *s, void *iter_ptr)
+{
+ struct qib_qp_iter *iter = iter_ptr;
+
+ if (!iter)
+ return 0;
+
+ qib_qp_iter_print(s, iter);
+
+ return 0;
+}
+
+DEBUGFS_FILE(qp_stats)
+
+void qib_dbg_ibdev_init(struct qib_ibdev *ibd)
+{
+ char name[10];
+
+ snprintf(name, sizeof(name), "qib%d", dd_from_dev(ibd)->unit);
+ ibd->qib_ibdev_dbg = debugfs_create_dir(name, qib_dbg_root);
+ if (!ibd->qib_ibdev_dbg) {
+ pr_warn("create of %s failed\n", name);
+ return;
+ }
+ DEBUGFS_FILE_CREATE(opcode_stats);
+ DEBUGFS_FILE_CREATE(ctx_stats);
+ DEBUGFS_FILE_CREATE(qp_stats);
+ return;
+}
+
+void qib_dbg_ibdev_exit(struct qib_ibdev *ibd)
+{
+ if (!qib_dbg_root)
+ goto out;
+ debugfs_remove_recursive(ibd->qib_ibdev_dbg);
+out:
+ ibd->qib_ibdev_dbg = NULL;
+}
+
+void qib_dbg_init(void)
+{
+ qib_dbg_root = debugfs_create_dir(QIB_DRV_NAME, NULL);
+ if (!qib_dbg_root)
+ pr_warn("init of debugfs failed\n");
+}
+
+void qib_dbg_exit(void)
+{
+ debugfs_remove_recursive(qib_dbg_root);
+ qib_dbg_root = NULL;
+}
+
+#endif
+
diff --git a/drivers/infiniband/hw/qib/qib_debugfs.h b/drivers/infiniband/hw/qib/qib_debugfs.h
new file mode 100644
index 00000000000..7ae983a91b8
--- /dev/null
+++ b/drivers/infiniband/hw/qib/qib_debugfs.h
@@ -0,0 +1,45 @@
+#ifndef _QIB_DEBUGFS_H
+#define _QIB_DEBUGFS_H
+
+#ifdef CONFIG_DEBUG_FS
+/*
+ * Copyright (c) 2013 Intel Corporation. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+struct qib_ibdev;
+void qib_dbg_ibdev_init(struct qib_ibdev *ibd);
+void qib_dbg_ibdev_exit(struct qib_ibdev *ibd);
+void qib_dbg_init(void);
+void qib_dbg_exit(void);
+
+#endif
+
+#endif /* _QIB_DEBUGFS_H */
diff --git a/drivers/infiniband/hw/qib/qib_driver.c b/drivers/infiniband/hw/qib/qib_driver.c
index 216092477df..5bee08f16d7 100644
--- a/drivers/infiniband/hw/qib/qib_driver.c
+++ b/drivers/infiniband/hw/qib/qib_driver.c
@@ -558,7 +558,6 @@ move_along:
}
rcd->head = l;
- rcd->pkt_count += i;
/*
* Iterate over all QPs waiting to respond.
diff --git a/drivers/infiniband/hw/qib/qib_file_ops.c b/drivers/infiniband/hw/qib/qib_file_ops.c
index 9dd0bc89c3a..b51a51486cb 100644
--- a/drivers/infiniband/hw/qib/qib_file_ops.c
+++ b/drivers/infiniband/hw/qib/qib_file_ops.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2012 Intel Corporation. All rights reserved.
+ * Copyright (c) 2012, 2013 Intel Corporation. All rights reserved.
* Copyright (c) 2006 - 2012 QLogic Corporation. All rights reserved.
* Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved.
*
@@ -1155,6 +1155,49 @@ static unsigned int qib_poll(struct file *fp, struct poll_table_struct *pt)
return pollflag;
}
+static void assign_ctxt_affinity(struct file *fp, struct qib_devdata *dd)
+{
+ struct qib_filedata *fd = fp->private_data;
+ const unsigned int weight = cpumask_weight(&current->cpus_allowed);
+ const struct cpumask *local_mask = cpumask_of_pcibus(dd->pcidev->bus);
+ int local_cpu;
+
+ /*
+ * If process has NOT already set it's affinity, select and
+ * reserve a processor for it on the local NUMA node.
+ */
+ if ((weight >= qib_cpulist_count) &&
+ (cpumask_weight(local_mask) <= qib_cpulist_count)) {
+ for_each_cpu(local_cpu, local_mask)
+ if (!test_and_set_bit(local_cpu, qib_cpulist)) {
+ fd->rec_cpu_num = local_cpu;
+ return;
+ }
+ }
+
+ /*
+ * If process has NOT already set it's affinity, select and
+ * reserve a processor for it, as a rendevous for all
+ * users of the driver. If they don't actually later
+ * set affinity to this cpu, or set it to some other cpu,
+ * it just means that sooner or later we don't recommend
+ * a cpu, and let the scheduler do it's best.
+ */
+ if (weight >= qib_cpulist_count) {
+ int cpu;
+ cpu = find_first_zero_bit(qib_cpulist,
+ qib_cpulist_count);
+ if (cpu == qib_cpulist_count)
+ qib_dev_err(dd,
+ "no cpus avail for affinity PID %u\n",
+ current->pid);
+ else {
+ __set_bit(cpu, qib_cpulist);
+ fd->rec_cpu_num = cpu;
+ }
+ }
+}
+
/*
* Check that userland and driver are compatible for subcontexts.
*/
@@ -1259,12 +1302,20 @@ bail:
static int setup_ctxt(struct qib_pportdata *ppd, int ctxt,
struct file *fp, const struct qib_user_info *uinfo)
{
+ struct qib_filedata *fd = fp->private_data;
struct qib_devdata *dd = ppd->dd;
struct qib_ctxtdata *rcd;
void *ptmp = NULL;
int ret;
+ int numa_id;
+
+ assign_ctxt_affinity(fp, dd);
- rcd = qib_create_ctxtdata(ppd, ctxt);
+ numa_id = qib_numa_aware ? ((fd->rec_cpu_num != -1) ?
+ cpu_to_node(fd->rec_cpu_num) :
+ numa_node_id()) : dd->assigned_node_id;
+
+ rcd = qib_create_ctxtdata(ppd, ctxt, numa_id);
/*
* Allocate memory for use in qib_tid_update() at open to
@@ -1296,6 +1347,9 @@ static int setup_ctxt(struct qib_pportdata *ppd, int ctxt,
goto bail;
bailerr:
+ if (fd->rec_cpu_num != -1)
+ __clear_bit(fd->rec_cpu_num, qib_cpulist);
+
dd->rcd[ctxt] = NULL;
kfree(rcd);
kfree(ptmp);
@@ -1485,6 +1539,57 @@ static int qib_open(struct inode *in, struct file *fp)
return fp->private_data ? 0 : -ENOMEM;
}
+static int find_hca(unsigned int cpu, int *unit)
+{
+ int ret = 0, devmax, npresent, nup, ndev;
+
+ *unit = -1;
+
+ devmax = qib_count_units(&npresent, &nup);
+ if (!npresent) {
+ ret = -ENXIO;
+ goto done;
+ }
+ if (!nup) {
+ ret = -ENETDOWN;
+ goto done;
+ }
+ for (ndev = 0; ndev < devmax; ndev++) {
+ struct qib_devdata *dd = qib_lookup(ndev);
+ if (dd) {
+ if (pcibus_to_node(dd->pcidev->bus) < 0) {
+ ret = -EINVAL;
+ goto done;
+ }
+ if (cpu_to_node(cpu) ==
+ pcibus_to_node(dd->pcidev->bus)) {
+ *unit = ndev;
+ goto done;
+ }
+ }
+ }
+done:
+ return ret;
+}
+
+static int do_qib_user_sdma_queue_create(struct file *fp)
+{
+ struct qib_filedata *fd = fp->private_data;
+ struct qib_ctxtdata *rcd = fd->rcd;
+ struct qib_devdata *dd = rcd->dd;
+
+ if (dd->flags & QIB_HAS_SEND_DMA)
+
+ fd->pq = qib_user_sdma_queue_create(&dd->pcidev->dev,
+ dd->unit,
+ rcd->ctxt,
+ fd->subctxt);
+ if (!fd->pq)
+ return -ENOMEM;
+
+ return 0;
+}
+
/*
* Get ctxt early, so can set affinity prior to memory allocation.
*/
@@ -1517,61 +1622,36 @@ static int qib_assign_ctxt(struct file *fp, const struct qib_user_info *uinfo)
if (qib_compatible_subctxts(swmajor, swminor) &&
uinfo->spu_subctxt_cnt) {
ret = find_shared_ctxt(fp, uinfo);
- if (ret) {
- if (ret > 0)
- ret = 0;
- goto done_chk_sdma;
+ if (ret > 0) {
+ ret = do_qib_user_sdma_queue_create(fp);
+ if (!ret)
+ assign_ctxt_affinity(fp, (ctxt_fp(fp))->dd);
+ goto done_ok;
}
}
i_minor = iminor(file_inode(fp)) - QIB_USER_MINOR_BASE;
if (i_minor)
ret = find_free_ctxt(i_minor - 1, fp, uinfo);
- else
+ else {
+ int unit;
+ const unsigned int cpu = cpumask_first(&current->cpus_allowed);
+ const unsigned int weight =
+ cpumask_weight(&current->cpus_allowed);
+
+ if (weight == 1 && !test_bit(cpu, qib_cpulist))
+ if (!find_hca(cpu, &unit) && unit >= 0)
+ if (!find_free_ctxt(unit, fp, uinfo)) {
+ ret = 0;
+ goto done_chk_sdma;
+ }
ret = get_a_ctxt(fp, uinfo, alg);
-
-done_chk_sdma:
- if (!ret) {
- struct qib_filedata *fd = fp->private_data;
- const struct qib_ctxtdata *rcd = fd->rcd;
- const struct qib_devdata *dd = rcd->dd;
- unsigned int weight;
-
- if (dd->flags & QIB_HAS_SEND_DMA) {
- fd->pq = qib_user_sdma_queue_create(&dd->pcidev->dev,
- dd->unit,
- rcd->ctxt,
- fd->subctxt);
- if (!fd->pq)
- ret = -ENOMEM;
- }
-
- /*
- * If process has NOT already set it's affinity, select and
- * reserve a processor for it, as a rendezvous for all
- * users of the driver. If they don't actually later
- * set affinity to this cpu, or set it to some other cpu,
- * it just means that sooner or later we don't recommend
- * a cpu, and let the scheduler do it's best.
- */
- weight = cpumask_weight(tsk_cpus_allowed(current));
- if (!ret && weight >= qib_cpulist_count) {
- int cpu;
- cpu = find_first_zero_bit(qib_cpulist,
- qib_cpulist_count);
- if (cpu != qib_cpulist_count) {
- __set_bit(cpu, qib_cpulist);
- fd->rec_cpu_num = cpu;
- }
- } else if (weight == 1 &&
- test_bit(cpumask_first(tsk_cpus_allowed(current)),
- qib_cpulist))
- qib_devinfo(dd->pcidev,
- "%s PID %u affinity set to cpu %d; already allocated\n",
- current->comm, current->pid,
- cpumask_first(tsk_cpus_allowed(current)));
}
+done_chk_sdma:
+ if (!ret)
+ ret = do_qib_user_sdma_queue_create(fp);
+done_ok:
mutex_unlock(&qib_mutex);
done:
diff --git a/drivers/infiniband/hw/qib/qib_iba6120.c b/drivers/infiniband/hw/qib/qib_iba6120.c
index 0232ae56b1f..84e593d6007 100644
--- a/drivers/infiniband/hw/qib/qib_iba6120.c
+++ b/drivers/infiniband/hw/qib/qib_iba6120.c
@@ -3464,6 +3464,13 @@ static int qib_6120_tempsense_rd(struct qib_devdata *dd, int regnum)
return -ENXIO;
}
+#ifdef CONFIG_INFINIBAND_QIB_DCA
+static int qib_6120_notify_dca(struct qib_devdata *dd, unsigned long event)
+{
+ return 0;
+}
+#endif
+
/* Dummy function, as 6120 boards never disable EEPROM Write */
static int qib_6120_eeprom_wen(struct qib_devdata *dd, int wen)
{
@@ -3539,6 +3546,9 @@ struct qib_devdata *qib_init_iba6120_funcs(struct pci_dev *pdev,
dd->f_xgxs_reset = qib_6120_xgxs_reset;
dd->f_writescratch = writescratch;
dd->f_tempsense_rd = qib_6120_tempsense_rd;
+#ifdef CONFIG_INFINIBAND_QIB_DCA
+ dd->f_notify_dca = qib_6120_notify_dca;
+#endif
/*
* Do remaining pcie setup and save pcie values in dd.
* Any error printing is already done by the init code.
diff --git a/drivers/infiniband/hw/qib/qib_iba7220.c b/drivers/infiniband/hw/qib/qib_iba7220.c
index 64d0ecb90cd..454c2e7668f 100644
--- a/drivers/infiniband/hw/qib/qib_iba7220.c
+++ b/drivers/infiniband/hw/qib/qib_iba7220.c
@@ -4513,6 +4513,13 @@ bail:
return ret;
}
+#ifdef CONFIG_INFINIBAND_QIB_DCA
+static int qib_7220_notify_dca(struct qib_devdata *dd, unsigned long event)
+{
+ return 0;
+}
+#endif
+
/* Dummy function, as 7220 boards never disable EEPROM Write */
static int qib_7220_eeprom_wen(struct qib_devdata *dd, int wen)
{
@@ -4587,6 +4594,9 @@ struct qib_devdata *qib_init_iba7220_funcs(struct pci_dev *pdev,
dd->f_xgxs_reset = qib_7220_xgxs_reset;
dd->f_writescratch = writescratch;
dd->f_tempsense_rd = qib_7220_tempsense_rd;
+#ifdef CONFIG_INFINIBAND_QIB_DCA
+ dd->f_notify_dca = qib_7220_notify_dca;
+#endif
/*
* Do remaining pcie setup and save pcie values in dd.
* Any error printing is already done by the init code.
diff --git a/drivers/infiniband/hw/qib/qib_iba7322.c b/drivers/infiniband/hw/qib/qib_iba7322.c
index 3f6b21e9dc1..21e8b09d4bf 100644
--- a/drivers/infiniband/hw/qib/qib_iba7322.c
+++ b/drivers/infiniband/hw/qib/qib_iba7322.c
@@ -44,6 +44,9 @@
#include <linux/module.h>
#include <rdma/ib_verbs.h>
#include <rdma/ib_smi.h>
+#ifdef CONFIG_INFINIBAND_QIB_DCA
+#include <linux/dca.h>
+#endif
#include "qib.h"
#include "qib_7322_regs.h"
@@ -80,6 +83,7 @@ static void ibsd_wr_allchans(struct qib_pportdata *, int, unsigned, unsigned);
static void serdes_7322_los_enable(struct qib_pportdata *, int);
static int serdes_7322_init_old(struct qib_pportdata *);
static int serdes_7322_init_new(struct qib_pportdata *);
+static void dump_sdma_7322_state(struct qib_pportdata *);
#define BMASK(msb, lsb) (((1 << ((msb) + 1 - (lsb))) - 1) << (lsb))
@@ -519,6 +523,14 @@ static const u8 qib_7322_physportstate[0x20] = {
[0x17] = IB_PHYSPORTSTATE_CFG_TRAIN
};
+#ifdef CONFIG_INFINIBAND_QIB_DCA
+struct qib_irq_notify {
+ int rcv;
+ void *arg;
+ struct irq_affinity_notify notify;
+};
+#endif
+
struct qib_chip_specific {
u64 __iomem *cregbase;
u64 *cntrs;
@@ -546,6 +558,12 @@ struct qib_chip_specific {
u32 lastbuf_for_pio;
u32 stay_in_freeze;
u32 recovery_ports_initted;
+#ifdef CONFIG_INFINIBAND_QIB_DCA
+ u32 dca_ctrl;
+ int rhdr_cpu[18];
+ int sdma_cpu[2];
+ u64 dca_rcvhdr_ctrl[5]; /* B, C, D, E, F */
+#endif
struct qib_msix_entry *msix_entries;
unsigned long *sendchkenable;
unsigned long *sendgrhchk;
@@ -573,7 +591,7 @@ struct vendor_txdds_ent {
static void write_tx_serdes_param(struct qib_pportdata *, struct txdds_ent *);
#define TXDDS_TABLE_SZ 16 /* number of entries per speed in onchip table */
-#define TXDDS_EXTRA_SZ 13 /* number of extra tx settings entries */
+#define TXDDS_EXTRA_SZ 18 /* number of extra tx settings entries */
#define TXDDS_MFG_SZ 2 /* number of mfg tx settings entries */
#define SERDES_CHANS 4 /* yes, it's obvious, but one less magic number */
@@ -635,6 +653,7 @@ struct qib_chippport_specific {
u8 ibmalfusesnap;
struct qib_qsfp_data qsfp_data;
char epmsgbuf[192]; /* for port error interrupt msg buffer */
+ char sdmamsgbuf[192]; /* for per-port sdma error messages */
};
static struct {
@@ -642,28 +661,76 @@ static struct {
irq_handler_t handler;
int lsb;
int port; /* 0 if not port-specific, else port # */
+ int dca;
} irq_table[] = {
- { "", qib_7322intr, -1, 0 },
+ { "", qib_7322intr, -1, 0, 0 },
{ " (buf avail)", qib_7322bufavail,
- SYM_LSB(IntStatus, SendBufAvail), 0 },
+ SYM_LSB(IntStatus, SendBufAvail), 0, 0},
{ " (sdma 0)", sdma_intr,
- SYM_LSB(IntStatus, SDmaInt_0), 1 },
+ SYM_LSB(IntStatus, SDmaInt_0), 1, 1 },
{ " (sdma 1)", sdma_intr,
- SYM_LSB(IntStatus, SDmaInt_1), 2 },
+ SYM_LSB(IntStatus, SDmaInt_1), 2, 1 },
{ " (sdmaI 0)", sdma_idle_intr,
- SYM_LSB(IntStatus, SDmaIdleInt_0), 1 },
+ SYM_LSB(IntStatus, SDmaIdleInt_0), 1, 1},
{ " (sdmaI 1)", sdma_idle_intr,
- SYM_LSB(IntStatus, SDmaIdleInt_1), 2 },
+ SYM_LSB(IntStatus, SDmaIdleInt_1), 2, 1},
{ " (sdmaP 0)", sdma_progress_intr,
- SYM_LSB(IntStatus, SDmaProgressInt_0), 1 },
+ SYM_LSB(IntStatus, SDmaProgressInt_0), 1, 1 },
{ " (sdmaP 1)", sdma_progress_intr,
- SYM_LSB(IntStatus, SDmaProgressInt_1), 2 },
+ SYM_LSB(IntStatus, SDmaProgressInt_1), 2, 1 },
{ " (sdmaC 0)", sdma_cleanup_intr,
- SYM_LSB(IntStatus, SDmaCleanupDone_0), 1 },
+ SYM_LSB(IntStatus, SDmaCleanupDone_0), 1, 0 },
{ " (sdmaC 1)", sdma_cleanup_intr,
- SYM_LSB(IntStatus, SDmaCleanupDone_1), 2 },
+ SYM_LSB(IntStatus, SDmaCleanupDone_1), 2 , 0},
};
+#ifdef CONFIG_INFINIBAND_QIB_DCA
+
+static const struct dca_reg_map {
+ int shadow_inx;
+ int lsb;
+ u64 mask;
+ u16 regno;
+} dca_rcvhdr_reg_map[] = {
+ { 0, SYM_LSB(DCACtrlB, RcvHdrq0DCAOPH),
+ ~SYM_MASK(DCACtrlB, RcvHdrq0DCAOPH) , KREG_IDX(DCACtrlB) },
+ { 0, SYM_LSB(DCACtrlB, RcvHdrq1DCAOPH),
+ ~SYM_MASK(DCACtrlB, RcvHdrq1DCAOPH) , KREG_IDX(DCACtrlB) },
+ { 0, SYM_LSB(DCACtrlB, RcvHdrq2DCAOPH),
+ ~SYM_MASK(DCACtrlB, RcvHdrq2DCAOPH) , KREG_IDX(DCACtrlB) },
+ { 0, SYM_LSB(DCACtrlB, RcvHdrq3DCAOPH),
+ ~SYM_MASK(DCACtrlB, RcvHdrq3DCAOPH) , KREG_IDX(DCACtrlB) },
+ { 1, SYM_LSB(DCACtrlC, RcvHdrq4DCAOPH),
+ ~SYM_MASK(DCACtrlC, RcvHdrq4DCAOPH) , KREG_IDX(DCACtrlC) },
+ { 1, SYM_LSB(DCACtrlC, RcvHdrq5DCAOPH),
+ ~SYM_MASK(DCACtrlC, RcvHdrq5DCAOPH) , KREG_IDX(DCACtrlC) },
+ { 1, SYM_LSB(DCACtrlC, RcvHdrq6DCAOPH),
+ ~SYM_MASK(DCACtrlC, RcvHdrq6DCAOPH) , KREG_IDX(DCACtrlC) },
+ { 1, SYM_LSB(DCACtrlC, RcvHdrq7DCAOPH),
+ ~SYM_MASK(DCACtrlC, RcvHdrq7DCAOPH) , KREG_IDX(DCACtrlC) },
+ { 2, SYM_LSB(DCACtrlD, RcvHdrq8DCAOPH),
+ ~SYM_MASK(DCACtrlD, RcvHdrq8DCAOPH) , KREG_IDX(DCACtrlD) },
+ { 2, SYM_LSB(DCACtrlD, RcvHdrq9DCAOPH),
+ ~SYM_MASK(DCACtrlD, RcvHdrq9DCAOPH) , KREG_IDX(DCACtrlD) },
+ { 2, SYM_LSB(DCACtrlD, RcvHdrq10DCAOPH),
+ ~SYM_MASK(DCACtrlD, RcvHdrq10DCAOPH) , KREG_IDX(DCACtrlD) },
+ { 2, SYM_LSB(DCACtrlD, RcvHdrq11DCAOPH),
+ ~SYM_MASK(DCACtrlD, RcvHdrq11DCAOPH) , KREG_IDX(DCACtrlD) },
+ { 3, SYM_LSB(DCACtrlE, RcvHdrq12DCAOPH),
+ ~SYM_MASK(DCACtrlE, RcvHdrq12DCAOPH) , KREG_IDX(DCACtrlE) },
+ { 3, SYM_LSB(DCACtrlE, RcvHdrq13DCAOPH),
+ ~SYM_MASK(DCACtrlE, RcvHdrq13DCAOPH) , KREG_IDX(DCACtrlE) },
+ { 3, SYM_LSB(DCACtrlE, RcvHdrq14DCAOPH),
+ ~SYM_MASK(DCACtrlE, RcvHdrq14DCAOPH) , KREG_IDX(DCACtrlE) },
+ { 3, SYM_LSB(DCACtrlE, RcvHdrq15DCAOPH),
+ ~SYM_MASK(DCACtrlE, RcvHdrq15DCAOPH) , KREG_IDX(DCACtrlE) },
+ { 4, SYM_LSB(DCACtrlF, RcvHdrq16DCAOPH),
+ ~SYM_MASK(DCACtrlF, RcvHdrq16DCAOPH) , KREG_IDX(DCACtrlF) },
+ { 4, SYM_LSB(DCACtrlF, RcvHdrq17DCAOPH),
+ ~SYM_MASK(DCACtrlF, RcvHdrq17DCAOPH) , KREG_IDX(DCACtrlF) },
+};
+#endif
+
/* ibcctrl bits */
#define QLOGIC_IB_IBCC_LINKINITCMD_DISABLE 1
/* cycle through TS1/TS2 till OK */
@@ -686,6 +753,13 @@ static void write_7322_init_portregs(struct qib_pportdata *);
static void setup_7322_link_recovery(struct qib_pportdata *, u32);
static void check_7322_rxe_status(struct qib_pportdata *);
static u32 __iomem *qib_7322_getsendbuf(struct qib_pportdata *, u64, u32 *);
+#ifdef CONFIG_INFINIBAND_QIB_DCA
+static void qib_setup_dca(struct qib_devdata *dd);
+static void setup_dca_notifier(struct qib_devdata *dd,
+ struct qib_msix_entry *m);
+static void reset_dca_notifier(struct qib_devdata *dd,
+ struct qib_msix_entry *m);
+#endif
/**
* qib_read_ureg32 - read 32-bit virtualized per-context register
@@ -1529,6 +1603,15 @@ static void sdma_7322_p_errors(struct qib_pportdata *ppd, u64 errs)
spin_lock_irqsave(&ppd->sdma_lock, flags);
+ if (errs != QIB_E_P_SDMAHALT) {
+ /* SDMA errors have QIB_E_P_SDMAHALT and another bit set */
+ qib_dev_porterr(dd, ppd->port,
+ "SDMA %s 0x%016llx %s\n",
+ qib_sdma_state_names[ppd->sdma_state.current_state],
+ errs, ppd->cpspec->sdmamsgbuf);
+ dump_sdma_7322_state(ppd);
+ }
+
switch (ppd->sdma_state.current_state) {
case qib_sdma_state_s00_hw_down:
break;
@@ -2084,6 +2167,29 @@ static void qib_7322_handle_hwerrors(struct qib_devdata *dd, char *msg,
qib_dev_err(dd, "%s hardware error\n", msg);
+ if (hwerrs &
+ (SYM_MASK(HwErrMask, SDmaMemReadErrMask_0) |
+ SYM_MASK(HwErrMask, SDmaMemReadErrMask_1))) {
+ int pidx = 0;
+ int err;
+ unsigned long flags;
+ struct qib_pportdata *ppd = dd->pport;
+ for (; pidx < dd->num_pports; ++pidx, ppd++) {
+ err = 0;
+ if (pidx == 0 && (hwerrs &
+ SYM_MASK(HwErrMask, SDmaMemReadErrMask_0)))
+ err++;
+ if (pidx == 1 && (hwerrs &
+ SYM_MASK(HwErrMask, SDmaMemReadErrMask_1)))
+ err++;
+ if (err) {
+ spin_lock_irqsave(&ppd->sdma_lock, flags);
+ dump_sdma_7322_state(ppd);
+ spin_unlock_irqrestore(&ppd->sdma_lock, flags);
+ }
+ }
+ }
+
if (isfatal && !dd->diag_client) {
qib_dev_err(dd,
"Fatal Hardware Error, no longer usable, SN %.16s\n",
@@ -2558,6 +2664,162 @@ static void qib_setup_7322_setextled(struct qib_pportdata *ppd, u32 on)
qib_write_kreg_port(ppd, krp_rcvpktledcnt, ledblink);
}
+#ifdef CONFIG_INFINIBAND_QIB_DCA
+
+static int qib_7322_notify_dca(struct qib_devdata *dd, unsigned long event)
+{
+ switch (event) {
+ case DCA_PROVIDER_ADD:
+ if (dd->flags & QIB_DCA_ENABLED)
+ break;
+ if (!dca_add_requester(&dd->pcidev->dev)) {
+ qib_devinfo(dd->pcidev, "DCA enabled\n");
+ dd->flags |= QIB_DCA_ENABLED;
+ qib_setup_dca(dd);
+ }
+ break;
+ case DCA_PROVIDER_REMOVE:
+ if (dd->flags & QIB_DCA_ENABLED) {
+ dca_remove_requester(&dd->pcidev->dev);
+ dd->flags &= ~QIB_DCA_ENABLED;
+ dd->cspec->dca_ctrl = 0;
+ qib_write_kreg(dd, KREG_IDX(DCACtrlA),
+ dd->cspec->dca_ctrl);
+ }
+ break;
+ }
+ return 0;
+}
+
+static void qib_update_rhdrq_dca(struct qib_ctxtdata *rcd, int cpu)
+{
+ struct qib_devdata *dd = rcd->dd;
+ struct qib_chip_specific *cspec = dd->cspec;
+
+ if (!(dd->flags & QIB_DCA_ENABLED))
+ return;
+ if (cspec->rhdr_cpu[rcd->ctxt] != cpu) {
+ const struct dca_reg_map *rmp;
+
+ cspec->rhdr_cpu[rcd->ctxt] = cpu;
+ rmp = &dca_rcvhdr_reg_map[rcd->ctxt];
+ cspec->dca_rcvhdr_ctrl[rmp->shadow_inx] &= rmp->mask;
+ cspec->dca_rcvhdr_ctrl[rmp->shadow_inx] |=
+ (u64) dca3_get_tag(&dd->pcidev->dev, cpu) << rmp->lsb;
+ qib_devinfo(dd->pcidev,
+ "Ctxt %d cpu %d dca %llx\n", rcd->ctxt, cpu,
+ (long long) cspec->dca_rcvhdr_ctrl[rmp->shadow_inx]);
+ qib_write_kreg(dd, rmp->regno,
+ cspec->dca_rcvhdr_ctrl[rmp->shadow_inx]);
+ cspec->dca_ctrl |= SYM_MASK(DCACtrlA, RcvHdrqDCAEnable);
+ qib_write_kreg(dd, KREG_IDX(DCACtrlA), cspec->dca_ctrl);
+ }
+}
+
+static void qib_update_sdma_dca(struct qib_pportdata *ppd, int cpu)
+{
+ struct qib_devdata *dd = ppd->dd;
+ struct qib_chip_specific *cspec = dd->cspec;
+ unsigned pidx = ppd->port - 1;
+
+ if (!(dd->flags & QIB_DCA_ENABLED))
+ return;
+ if (cspec->sdma_cpu[pidx] != cpu) {
+ cspec->sdma_cpu[pidx] = cpu;
+ cspec->dca_rcvhdr_ctrl[4] &= ~(ppd->hw_pidx ?
+ SYM_MASK(DCACtrlF, SendDma1DCAOPH) :
+ SYM_MASK(DCACtrlF, SendDma0DCAOPH));
+ cspec->dca_rcvhdr_ctrl[4] |=
+ (u64) dca3_get_tag(&dd->pcidev->dev, cpu) <<
+ (ppd->hw_pidx ?
+ SYM_LSB(DCACtrlF, SendDma1DCAOPH) :
+ SYM_LSB(DCACtrlF, SendDma0DCAOPH));
+ qib_devinfo(dd->pcidev,
+ "sdma %d cpu %d dca %llx\n", ppd->hw_pidx, cpu,
+ (long long) cspec->dca_rcvhdr_ctrl[4]);
+ qib_write_kreg(dd, KREG_IDX(DCACtrlF),
+ cspec->dca_rcvhdr_ctrl[4]);
+ cspec->dca_ctrl |= ppd->hw_pidx ?
+ SYM_MASK(DCACtrlA, SendDMAHead1DCAEnable) :
+ SYM_MASK(DCACtrlA, SendDMAHead0DCAEnable);
+ qib_write_kreg(dd, KREG_IDX(DCACtrlA), cspec->dca_ctrl);
+ }
+}
+
+static void qib_setup_dca(struct qib_devdata *dd)
+{
+ struct qib_chip_specific *cspec = dd->cspec;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(cspec->rhdr_cpu); i++)
+ cspec->rhdr_cpu[i] = -1;
+ for (i = 0; i < ARRAY_SIZE(cspec->sdma_cpu); i++)
+ cspec->sdma_cpu[i] = -1;
+ cspec->dca_rcvhdr_ctrl[0] =
+ (1ULL << SYM_LSB(DCACtrlB, RcvHdrq0DCAXfrCnt)) |
+ (1ULL << SYM_LSB(DCACtrlB, RcvHdrq1DCAXfrCnt)) |
+ (1ULL << SYM_LSB(DCACtrlB, RcvHdrq2DCAXfrCnt)) |
+ (1ULL << SYM_LSB(DCACtrlB, RcvHdrq3DCAXfrCnt));
+ cspec->dca_rcvhdr_ctrl[1] =
+ (1ULL << SYM_LSB(DCACtrlC, RcvHdrq4DCAXfrCnt)) |
+ (1ULL << SYM_LSB(DCACtrlC, RcvHdrq5DCAXfrCnt)) |
+ (1ULL << SYM_LSB(DCACtrlC, RcvHdrq6DCAXfrCnt)) |
+ (1ULL << SYM_LSB(DCACtrlC, RcvHdrq7DCAXfrCnt));
+ cspec->dca_rcvhdr_ctrl[2] =
+ (1ULL << SYM_LSB(DCACtrlD, RcvHdrq8DCAXfrCnt)) |
+ (1ULL << SYM_LSB(DCACtrlD, RcvHdrq9DCAXfrCnt)) |
+ (1ULL << SYM_LSB(DCACtrlD, RcvHdrq10DCAXfrCnt)) |
+ (1ULL << SYM_LSB(DCACtrlD, RcvHdrq11DCAXfrCnt));
+ cspec->dca_rcvhdr_ctrl[3] =
+ (1ULL << SYM_LSB(DCACtrlE, RcvHdrq12DCAXfrCnt)) |
+ (1ULL << SYM_LSB(DCACtrlE, RcvHdrq13DCAXfrCnt)) |
+ (1ULL << SYM_LSB(DCACtrlE, RcvHdrq14DCAXfrCnt)) |
+ (1ULL << SYM_LSB(DCACtrlE, RcvHdrq15DCAXfrCnt));
+ cspec->dca_rcvhdr_ctrl[4] =
+ (1ULL << SYM_LSB(DCACtrlF, RcvHdrq16DCAXfrCnt)) |
+ (1ULL << SYM_LSB(DCACtrlF, RcvHdrq17DCAXfrCnt));
+ for (i = 0; i < ARRAY_SIZE(cspec->sdma_cpu); i++)
+ qib_write_kreg(dd, KREG_IDX(DCACtrlB) + i,
+ cspec->dca_rcvhdr_ctrl[i]);
+ for (i = 0; i < cspec->num_msix_entries; i++)
+ setup_dca_notifier(dd, &cspec->msix_entries[i]);
+}
+
+static void qib_irq_notifier_notify(struct irq_affinity_notify *notify,
+ const cpumask_t *mask)
+{
+ struct qib_irq_notify *n =
+ container_of(notify, struct qib_irq_notify, notify);
+ int cpu = cpumask_first(mask);
+
+ if (n->rcv) {
+ struct qib_ctxtdata *rcd = (struct qib_ctxtdata *)n->arg;
+ qib_update_rhdrq_dca(rcd, cpu);
+ } else {
+ struct qib_pportdata *ppd = (struct qib_pportdata *)n->arg;
+ qib_update_sdma_dca(ppd, cpu);
+ }
+}
+
+static void qib_irq_notifier_release(struct kref *ref)
+{
+ struct qib_irq_notify *n =
+ container_of(ref, struct qib_irq_notify, notify.kref);
+ struct qib_devdata *dd;
+
+ if (n->rcv) {
+ struct qib_ctxtdata *rcd = (struct qib_ctxtdata *)n->arg;
+ dd = rcd->dd;
+ } else {
+ struct qib_pportdata *ppd = (struct qib_pportdata *)n->arg;
+ dd = ppd->dd;
+ }
+ qib_devinfo(dd->pcidev,
+ "release on HCA notify 0x%p n 0x%p\n", ref, n);
+ kfree(n);
+}
+#endif
+
/*
* Disable MSIx interrupt if enabled, call generic MSIx code
* to cleanup, and clear pending MSIx interrupts.
@@ -2575,6 +2837,9 @@ static void qib_7322_nomsix(struct qib_devdata *dd)
dd->cspec->num_msix_entries = 0;
for (i = 0; i < n; i++) {
+#ifdef CONFIG_INFINIBAND_QIB_DCA
+ reset_dca_notifier(dd, &dd->cspec->msix_entries[i]);
+#endif
irq_set_affinity_hint(
dd->cspec->msix_entries[i].msix.vector, NULL);
free_cpumask_var(dd->cspec->msix_entries[i].mask);
@@ -2602,6 +2867,15 @@ static void qib_setup_7322_cleanup(struct qib_devdata *dd)
{
int i;
+#ifdef CONFIG_INFINIBAND_QIB_DCA
+ if (dd->flags & QIB_DCA_ENABLED) {
+ dca_remove_requester(&dd->pcidev->dev);
+ dd->flags &= ~QIB_DCA_ENABLED;
+ dd->cspec->dca_ctrl = 0;
+ qib_write_kreg(dd, KREG_IDX(DCACtrlA), dd->cspec->dca_ctrl);
+ }
+#endif
+
qib_7322_free_irq(dd);
kfree(dd->cspec->cntrs);
kfree(dd->cspec->sendchkenable);
@@ -3068,6 +3342,53 @@ static irqreturn_t sdma_cleanup_intr(int irq, void *data)
return IRQ_HANDLED;
}
+#ifdef CONFIG_INFINIBAND_QIB_DCA
+
+static void reset_dca_notifier(struct qib_devdata *dd, struct qib_msix_entry *m)
+{
+ if (!m->dca)
+ return;
+ qib_devinfo(dd->pcidev,
+ "Disabling notifier on HCA %d irq %d\n",
+ dd->unit,
+ m->msix.vector);
+ irq_set_affinity_notifier(
+ m->msix.vector,
+ NULL);
+ m->notifier = NULL;
+}
+
+static void setup_dca_notifier(struct qib_devdata *dd, struct qib_msix_entry *m)
+{
+ struct qib_irq_notify *n;
+
+ if (!m->dca)
+ return;
+ n = kzalloc(sizeof(*n), GFP_KERNEL);
+ if (n) {
+ int ret;
+
+ m->notifier = n;
+ n->notify.irq = m->msix.vector;
+ n->notify.notify = qib_irq_notifier_notify;
+ n->notify.release = qib_irq_notifier_release;
+ n->arg = m->arg;
+ n->rcv = m->rcv;
+ qib_devinfo(dd->pcidev,
+ "set notifier irq %d rcv %d notify %p\n",
+ n->notify.irq, n->rcv, &n->notify);
+ ret = irq_set_affinity_notifier(
+ n->notify.irq,
+ &n->notify);
+ if (ret) {
+ m->notifier = NULL;
+ kfree(n);
+ }
+ }
+}
+
+#endif
+
/*
* Set up our chip-specific interrupt handler.
* The interrupt type has already been setup, so
@@ -3149,6 +3470,9 @@ try_intx:
void *arg;
u64 val;
int lsb, reg, sh;
+#ifdef CONFIG_INFINIBAND_QIB_DCA
+ int dca = 0;
+#endif
dd->cspec->msix_entries[msixnum].
name[sizeof(dd->cspec->msix_entries[msixnum].name) - 1]
@@ -3161,6 +3485,9 @@ try_intx:
arg = dd->pport + irq_table[i].port - 1;
} else
arg = dd;
+#ifdef CONFIG_INFINIBAND_QIB_DCA
+ dca = irq_table[i].dca;
+#endif
lsb = irq_table[i].lsb;
handler = irq_table[i].handler;
snprintf(dd->cspec->msix_entries[msixnum].name,
@@ -3178,6 +3505,9 @@ try_intx:
continue;
if (qib_krcvq01_no_msi && ctxt < 2)
continue;
+#ifdef CONFIG_INFINIBAND_QIB_DCA
+ dca = 1;
+#endif
lsb = QIB_I_RCVAVAIL_LSB + ctxt;
handler = qib_7322pintr;
snprintf(dd->cspec->msix_entries[msixnum].name,
@@ -3203,6 +3533,11 @@ try_intx:
goto try_intx;
}
dd->cspec->msix_entries[msixnum].arg = arg;
+#ifdef CONFIG_INFINIBAND_QIB_DCA
+ dd->cspec->msix_entries[msixnum].dca = dca;
+ dd->cspec->msix_entries[msixnum].rcv =
+ handler == qib_7322pintr;
+#endif
if (lsb >= 0) {
reg = lsb / IBA7322_REDIRECT_VEC_PER_REG;
sh = (lsb % IBA7322_REDIRECT_VEC_PER_REG) *
@@ -6452,6 +6787,86 @@ static void qib_sdma_set_7322_desc_cnt(struct qib_pportdata *ppd, unsigned cnt)
qib_write_kreg_port(ppd, krp_senddmadesccnt, cnt);
}
+/*
+ * sdma_lock should be acquired before calling this routine
+ */
+static void dump_sdma_7322_state(struct qib_pportdata *ppd)
+{
+ u64 reg, reg1, reg2;
+
+ reg = qib_read_kreg_port(ppd, krp_senddmastatus);
+ qib_dev_porterr(ppd->dd, ppd->port,
+ "SDMA senddmastatus: 0x%016llx\n", reg);
+
+ reg = qib_read_kreg_port(ppd, krp_sendctrl);
+ qib_dev_porterr(ppd->dd, ppd->port,
+ "SDMA sendctrl: 0x%016llx\n", reg);
+
+ reg = qib_read_kreg_port(ppd, krp_senddmabase);
+ qib_dev_porterr(ppd->dd, ppd->port,
+ "SDMA senddmabase: 0x%016llx\n", reg);
+
+ reg = qib_read_kreg_port(ppd, krp_senddmabufmask0);
+ reg1 = qib_read_kreg_port(ppd, krp_senddmabufmask1);
+ reg2 = qib_read_kreg_port(ppd, krp_senddmabufmask2);
+ qib_dev_porterr(ppd->dd, ppd->port,
+ "SDMA senddmabufmask 0:%llx 1:%llx 2:%llx\n",
+ reg, reg1, reg2);
+
+ /* get bufuse bits, clear them, and print them again if non-zero */
+ reg = qib_read_kreg_port(ppd, krp_senddmabuf_use0);
+ qib_write_kreg_port(ppd, krp_senddmabuf_use0, reg);
+ reg1 = qib_read_kreg_port(ppd, krp_senddmabuf_use1);
+ qib_write_kreg_port(ppd, krp_senddmabuf_use0, reg1);
+ reg2 = qib_read_kreg_port(ppd, krp_senddmabuf_use2);
+ qib_write_kreg_port(ppd, krp_senddmabuf_use0, reg2);
+ /* 0 and 1 should always be zero, so print as short form */
+ qib_dev_porterr(ppd->dd, ppd->port,
+ "SDMA current senddmabuf_use 0:%llx 1:%llx 2:%llx\n",
+ reg, reg1, reg2);
+ reg = qib_read_kreg_port(ppd, krp_senddmabuf_use0);
+ reg1 = qib_read_kreg_port(ppd, krp_senddmabuf_use1);
+ reg2 = qib_read_kreg_port(ppd, krp_senddmabuf_use2);
+ /* 0 and 1 should always be zero, so print as short form */
+ qib_dev_porterr(ppd->dd, ppd->port,
+ "SDMA cleared senddmabuf_use 0:%llx 1:%llx 2:%llx\n",
+ reg, reg1, reg2);
+
+ reg = qib_read_kreg_port(ppd, krp_senddmatail);
+ qib_dev_porterr(ppd->dd, ppd->port,
+ "SDMA senddmatail: 0x%016llx\n", reg);
+
+ reg = qib_read_kreg_port(ppd, krp_senddmahead);
+ qib_dev_porterr(ppd->dd, ppd->port,
+ "SDMA senddmahead: 0x%016llx\n", reg);
+
+ reg = qib_read_kreg_port(ppd, krp_senddmaheadaddr);
+ qib_dev_porterr(ppd->dd, ppd->port,
+ "SDMA senddmaheadaddr: 0x%016llx\n", reg);
+
+ reg = qib_read_kreg_port(ppd, krp_senddmalengen);
+ qib_dev_porterr(ppd->dd, ppd->port,
+ "SDMA senddmalengen: 0x%016llx\n", reg);
+
+ reg = qib_read_kreg_port(ppd, krp_senddmadesccnt);
+ qib_dev_porterr(ppd->dd, ppd->port,
+ "SDMA senddmadesccnt: 0x%016llx\n", reg);
+
+ reg = qib_read_kreg_port(ppd, krp_senddmaidlecnt);
+ qib_dev_porterr(ppd->dd, ppd->port,
+ "SDMA senddmaidlecnt: 0x%016llx\n", reg);
+
+ reg = qib_read_kreg_port(ppd, krp_senddmaprioritythld);
+ qib_dev_porterr(ppd->dd, ppd->port,
+ "SDMA senddmapriorityhld: 0x%016llx\n", reg);
+
+ reg = qib_read_kreg_port(ppd, krp_senddmareloadcnt);
+ qib_dev_porterr(ppd->dd, ppd->port,
+ "SDMA senddmareloadcnt: 0x%016llx\n", reg);
+
+ dump_sdma_state(ppd);
+}
+
static struct sdma_set_state_action sdma_7322_action_table[] = {
[qib_sdma_state_s00_hw_down] = {
.go_s99_running_tofalse = 1,
@@ -6885,6 +7300,9 @@ struct qib_devdata *qib_init_iba7322_funcs(struct pci_dev *pdev,
dd->f_sdma_init_early = qib_7322_sdma_init_early;
dd->f_writescratch = writescratch;
dd->f_tempsense_rd = qib_7322_tempsense_rd;
+#ifdef CONFIG_INFINIBAND_QIB_DCA
+ dd->f_notify_dca = qib_7322_notify_dca;
+#endif
/*
* Do remaining PCIe setup and save PCIe values in dd.
* Any error printing is already done by the init code.
@@ -6921,7 +7339,7 @@ struct qib_devdata *qib_init_iba7322_funcs(struct pci_dev *pdev,
actual_cnt -= dd->num_pports;
tabsize = actual_cnt;
- dd->cspec->msix_entries = kmalloc(tabsize *
+ dd->cspec->msix_entries = kzalloc(tabsize *
sizeof(struct qib_msix_entry), GFP_KERNEL);
if (!dd->cspec->msix_entries) {
qib_dev_err(dd, "No memory for MSIx table\n");
@@ -6941,7 +7359,13 @@ struct qib_devdata *qib_init_iba7322_funcs(struct pci_dev *pdev,
/* clear diagctrl register, in case diags were running and crashed */
qib_write_kreg(dd, kr_hwdiagctrl, 0);
-
+#ifdef CONFIG_INFINIBAND_QIB_DCA
+ if (!dca_add_requester(&pdev->dev)) {
+ qib_devinfo(dd->pcidev, "DCA enabled\n");
+ dd->flags |= QIB_DCA_ENABLED;
+ qib_setup_dca(dd);
+ }
+#endif
goto bail;
bail_cleanup:
@@ -7156,15 +7580,20 @@ static const struct txdds_ent txdds_extra_sdr[TXDDS_EXTRA_SZ] = {
{ 0, 0, 0, 1 }, /* QMH7342 backplane settings */
{ 0, 0, 0, 2 }, /* QMH7342 backplane settings */
{ 0, 0, 0, 2 }, /* QMH7342 backplane settings */
- { 0, 0, 0, 11 }, /* QME7342 backplane settings */
- { 0, 0, 0, 11 }, /* QME7342 backplane settings */
- { 0, 0, 0, 11 }, /* QME7342 backplane settings */
- { 0, 0, 0, 11 }, /* QME7342 backplane settings */
- { 0, 0, 0, 11 }, /* QME7342 backplane settings */
- { 0, 0, 0, 11 }, /* QME7342 backplane settings */
- { 0, 0, 0, 11 }, /* QME7342 backplane settings */
{ 0, 0, 0, 3 }, /* QMH7342 backplane settings */
{ 0, 0, 0, 4 }, /* QMH7342 backplane settings */
+ { 0, 1, 4, 15 }, /* QME7342 backplane settings 1.0 */
+ { 0, 1, 3, 15 }, /* QME7342 backplane settings 1.0 */
+ { 0, 1, 0, 12 }, /* QME7342 backplane settings 1.0 */
+ { 0, 1, 0, 11 }, /* QME7342 backplane settings 1.0 */
+ { 0, 1, 0, 9 }, /* QME7342 backplane settings 1.0 */
+ { 0, 1, 0, 14 }, /* QME7342 backplane settings 1.0 */
+ { 0, 1, 2, 15 }, /* QME7342 backplane settings 1.0 */
+ { 0, 1, 0, 11 }, /* QME7342 backplane settings 1.1 */
+ { 0, 1, 0, 7 }, /* QME7342 backplane settings 1.1 */
+ { 0, 1, 0, 9 }, /* QME7342 backplane settings 1.1 */
+ { 0, 1, 0, 6 }, /* QME7342 backplane settings 1.1 */
+ { 0, 1, 0, 8 }, /* QME7342 backplane settings 1.1 */
};
static const struct txdds_ent txdds_extra_ddr[TXDDS_EXTRA_SZ] = {
@@ -7173,15 +7602,20 @@ static const struct txdds_ent txdds_extra_ddr[TXDDS_EXTRA_SZ] = {
{ 0, 0, 0, 7 }, /* QMH7342 backplane settings */
{ 0, 0, 0, 8 }, /* QMH7342 backplane settings */
{ 0, 0, 0, 8 }, /* QMH7342 backplane settings */
- { 0, 0, 0, 13 }, /* QME7342 backplane settings */
- { 0, 0, 0, 13 }, /* QME7342 backplane settings */
- { 0, 0, 0, 13 }, /* QME7342 backplane settings */
- { 0, 0, 0, 13 }, /* QME7342 backplane settings */
- { 0, 0, 0, 13 }, /* QME7342 backplane settings */
- { 0, 0, 0, 13 }, /* QME7342 backplane settings */
- { 0, 0, 0, 13 }, /* QME7342 backplane settings */
{ 0, 0, 0, 9 }, /* QMH7342 backplane settings */
{ 0, 0, 0, 10 }, /* QMH7342 backplane settings */
+ { 0, 1, 4, 15 }, /* QME7342 backplane settings 1.0 */
+ { 0, 1, 3, 15 }, /* QME7342 backplane settings 1.0 */
+ { 0, 1, 0, 12 }, /* QME7342 backplane settings 1.0 */
+ { 0, 1, 0, 11 }, /* QME7342 backplane settings 1.0 */
+ { 0, 1, 0, 9 }, /* QME7342 backplane settings 1.0 */
+ { 0, 1, 0, 14 }, /* QME7342 backplane settings 1.0 */
+ { 0, 1, 2, 15 }, /* QME7342 backplane settings 1.0 */
+ { 0, 1, 0, 11 }, /* QME7342 backplane settings 1.1 */
+ { 0, 1, 0, 7 }, /* QME7342 backplane settings 1.1 */
+ { 0, 1, 0, 9 }, /* QME7342 backplane settings 1.1 */
+ { 0, 1, 0, 6 }, /* QME7342 backplane settings 1.1 */
+ { 0, 1, 0, 8 }, /* QME7342 backplane settings 1.1 */
};
static const struct txdds_ent txdds_extra_qdr[TXDDS_EXTRA_SZ] = {
@@ -7190,15 +7624,20 @@ static const struct txdds_ent txdds_extra_qdr[TXDDS_EXTRA_SZ] = {
{ 0, 1, 0, 5 }, /* QMH7342 backplane settings */
{ 0, 1, 0, 6 }, /* QMH7342 backplane settings */
{ 0, 1, 0, 8 }, /* QMH7342 backplane settings */
- { 0, 1, 12, 10 }, /* QME7342 backplane setting */
- { 0, 1, 12, 11 }, /* QME7342 backplane setting */
- { 0, 1, 12, 12 }, /* QME7342 backplane setting */
- { 0, 1, 12, 14 }, /* QME7342 backplane setting */
- { 0, 1, 12, 6 }, /* QME7342 backplane setting */
- { 0, 1, 12, 7 }, /* QME7342 backplane setting */
- { 0, 1, 12, 8 }, /* QME7342 backplane setting */
{ 0, 1, 0, 10 }, /* QMH7342 backplane settings */
{ 0, 1, 0, 12 }, /* QMH7342 backplane settings */
+ { 0, 1, 4, 15 }, /* QME7342 backplane settings 1.0 */
+ { 0, 1, 3, 15 }, /* QME7342 backplane settings 1.0 */
+ { 0, 1, 0, 12 }, /* QME7342 backplane settings 1.0 */
+ { 0, 1, 0, 11 }, /* QME7342 backplane settings 1.0 */
+ { 0, 1, 0, 9 }, /* QME7342 backplane settings 1.0 */
+ { 0, 1, 0, 14 }, /* QME7342 backplane settings 1.0 */
+ { 0, 1, 2, 15 }, /* QME7342 backplane settings 1.0 */
+ { 0, 1, 0, 11 }, /* QME7342 backplane settings 1.1 */
+ { 0, 1, 0, 7 }, /* QME7342 backplane settings 1.1 */
+ { 0, 1, 0, 9 }, /* QME7342 backplane settings 1.1 */
+ { 0, 1, 0, 6 }, /* QME7342 backplane settings 1.1 */
+ { 0, 1, 0, 8 }, /* QME7342 backplane settings 1.1 */
};
static const struct txdds_ent txdds_extra_mfg[TXDDS_MFG_SZ] = {
diff --git a/drivers/infiniband/hw/qib/qib_init.c b/drivers/infiniband/hw/qib/qib_init.c
index 173f805790d..36e048e0e1d 100644
--- a/drivers/infiniband/hw/qib/qib_init.c
+++ b/drivers/infiniband/hw/qib/qib_init.c
@@ -39,10 +39,17 @@
#include <linux/idr.h>
#include <linux/module.h>
#include <linux/printk.h>
+#ifdef CONFIG_INFINIBAND_QIB_DCA
+#include <linux/dca.h>
+#endif
#include "qib.h"
#include "qib_common.h"
#include "qib_mad.h"
+#ifdef CONFIG_DEBUG_FS
+#include "qib_debugfs.h"
+#include "qib_verbs.h"
+#endif
#undef pr_fmt
#define pr_fmt(fmt) QIB_DRV_NAME ": " fmt
@@ -64,6 +71,11 @@ ushort qib_cfgctxts;
module_param_named(cfgctxts, qib_cfgctxts, ushort, S_IRUGO);
MODULE_PARM_DESC(cfgctxts, "Set max number of contexts to use");
+unsigned qib_numa_aware;
+module_param_named(numa_aware, qib_numa_aware, uint, S_IRUGO);
+MODULE_PARM_DESC(numa_aware,
+ "0 -> PSM allocation close to HCA, 1 -> PSM allocation local to process");
+
/*
* If set, do not write to any regs if avoidable, hack to allow
* check for deranged default register values.
@@ -89,8 +101,6 @@ unsigned qib_wc_pat = 1; /* default (1) is to use PAT, not MTRR */
module_param_named(wc_pat, qib_wc_pat, uint, S_IRUGO);
MODULE_PARM_DESC(wc_pat, "enable write-combining via PAT mechanism");
-struct workqueue_struct *qib_cq_wq;
-
static void verify_interrupt(unsigned long);
static struct idr qib_unit_table;
@@ -121,6 +131,11 @@ int qib_create_ctxts(struct qib_devdata *dd)
{
unsigned i;
int ret;
+ int local_node_id = pcibus_to_node(dd->pcidev->bus);
+
+ if (local_node_id < 0)
+ local_node_id = numa_node_id();
+ dd->assigned_node_id = local_node_id;
/*
* Allocate full ctxtcnt array, rather than just cfgctxts, because
@@ -143,7 +158,8 @@ int qib_create_ctxts(struct qib_devdata *dd)
continue;
ppd = dd->pport + (i % dd->num_pports);
- rcd = qib_create_ctxtdata(ppd, i);
+
+ rcd = qib_create_ctxtdata(ppd, i, dd->assigned_node_id);
if (!rcd) {
qib_dev_err(dd,
"Unable to allocate ctxtdata for Kernel ctxt, failing\n");
@@ -161,20 +177,33 @@ done:
/*
* Common code for user and kernel context setup.
*/
-struct qib_ctxtdata *qib_create_ctxtdata(struct qib_pportdata *ppd, u32 ctxt)
+struct qib_ctxtdata *qib_create_ctxtdata(struct qib_pportdata *ppd, u32 ctxt,
+ int node_id)
{
struct qib_devdata *dd = ppd->dd;
struct qib_ctxtdata *rcd;
- rcd = kzalloc(sizeof(*rcd), GFP_KERNEL);
+ rcd = kzalloc_node(sizeof(*rcd), GFP_KERNEL, node_id);
if (rcd) {
INIT_LIST_HEAD(&rcd->qp_wait_list);
+ rcd->node_id = node_id;
rcd->ppd = ppd;
rcd->dd = dd;
rcd->cnt = 1;
rcd->ctxt = ctxt;
dd->rcd[ctxt] = rcd;
-
+#ifdef CONFIG_DEBUG_FS
+ if (ctxt < dd->first_user_ctxt) { /* N/A for PSM contexts */
+ rcd->opstats = kzalloc_node(sizeof(*rcd->opstats),
+ GFP_KERNEL, node_id);
+ if (!rcd->opstats) {
+ kfree(rcd);
+ qib_dev_err(dd,
+ "Unable to allocate per ctxt stats buffer\n");
+ return NULL;
+ }
+ }
+#endif
dd->f_init_ctxt(rcd);
/*
@@ -429,6 +458,7 @@ static int loadtime_init(struct qib_devdata *dd)
dd->intrchk_timer.function = verify_interrupt;
dd->intrchk_timer.data = (unsigned long) dd;
+ ret = qib_cq_init(dd);
done:
return ret;
}
@@ -944,6 +974,10 @@ void qib_free_ctxtdata(struct qib_devdata *dd, struct qib_ctxtdata *rcd)
vfree(rcd->subctxt_uregbase);
vfree(rcd->subctxt_rcvegrbuf);
vfree(rcd->subctxt_rcvhdr_base);
+#ifdef CONFIG_DEBUG_FS
+ kfree(rcd->opstats);
+ rcd->opstats = NULL;
+#endif
kfree(rcd);
}
@@ -1033,7 +1067,6 @@ done:
dd->f_set_armlaunch(dd, 1);
}
-
void qib_free_devdata(struct qib_devdata *dd)
{
unsigned long flags;
@@ -1043,6 +1076,9 @@ void qib_free_devdata(struct qib_devdata *dd)
list_del(&dd->list);
spin_unlock_irqrestore(&qib_devs_lock, flags);
+#ifdef CONFIG_DEBUG_FS
+ qib_dbg_ibdev_exit(&dd->verbs_dev);
+#endif
ib_dealloc_device(&dd->verbs_dev.ibdev);
}
@@ -1066,6 +1102,10 @@ struct qib_devdata *qib_alloc_devdata(struct pci_dev *pdev, size_t extra)
goto bail;
}
+#ifdef CONFIG_DEBUG_FS
+ qib_dbg_ibdev_init(&dd->verbs_dev);
+#endif
+
idr_preload(GFP_KERNEL);
spin_lock_irqsave(&qib_devs_lock, flags);
@@ -1081,6 +1121,9 @@ struct qib_devdata *qib_alloc_devdata(struct pci_dev *pdev, size_t extra)
if (ret < 0) {
qib_early_err(&pdev->dev,
"Could not allocate unit ID: error %d\n", -ret);
+#ifdef CONFIG_DEBUG_FS
+ qib_dbg_ibdev_exit(&dd->verbs_dev);
+#endif
ib_dealloc_device(&dd->verbs_dev.ibdev);
dd = ERR_PTR(ret);
goto bail;
@@ -1158,6 +1201,35 @@ struct pci_driver qib_driver = {
.err_handler = &qib_pci_err_handler,
};
+#ifdef CONFIG_INFINIBAND_QIB_DCA
+
+static int qib_notify_dca(struct notifier_block *, unsigned long, void *);
+static struct notifier_block dca_notifier = {
+ .notifier_call = qib_notify_dca,
+ .next = NULL,
+ .priority = 0
+};
+
+static int qib_notify_dca_device(struct device *device, void *data)
+{
+ struct qib_devdata *dd = dev_get_drvdata(device);
+ unsigned long event = *(unsigned long *)data;
+
+ return dd->f_notify_dca(dd, event);
+}
+
+static int qib_notify_dca(struct notifier_block *nb, unsigned long event,
+ void *p)
+{
+ int rval;
+
+ rval = driver_for_each_device(&qib_driver.driver, NULL,
+ &event, qib_notify_dca_device);
+ return rval ? NOTIFY_BAD : NOTIFY_DONE;
+}
+
+#endif
+
/*
* Do all the generic driver unit- and chip-independent memory
* allocation and initialization.
@@ -1170,22 +1242,22 @@ static int __init qlogic_ib_init(void)
if (ret)
goto bail;
- qib_cq_wq = create_singlethread_workqueue("qib_cq");
- if (!qib_cq_wq) {
- ret = -ENOMEM;
- goto bail_dev;
- }
-
/*
* These must be called before the driver is registered with
* the PCI subsystem.
*/
idr_init(&qib_unit_table);
+#ifdef CONFIG_INFINIBAND_QIB_DCA
+ dca_register_notify(&dca_notifier);
+#endif
+#ifdef CONFIG_DEBUG_FS
+ qib_dbg_init();
+#endif
ret = pci_register_driver(&qib_driver);
if (ret < 0) {
pr_err("Unable to register driver: error %d\n", -ret);
- goto bail_unit;
+ goto bail_dev;
}
/* not fatal if it doesn't work */
@@ -1193,10 +1265,14 @@ static int __init qlogic_ib_init(void)
pr_err("Unable to register ipathfs\n");
goto bail; /* all OK */
-bail_unit:
- idr_destroy(&qib_unit_table);
- destroy_workqueue(qib_cq_wq);
bail_dev:
+#ifdef CONFIG_INFINIBAND_QIB_DCA
+ dca_unregister_notify(&dca_notifier);
+#endif
+#ifdef CONFIG_DEBUG_FS
+ qib_dbg_exit();
+#endif
+ idr_destroy(&qib_unit_table);
qib_dev_cleanup();
bail:
return ret;
@@ -1217,9 +1293,13 @@ static void __exit qlogic_ib_cleanup(void)
"Unable to cleanup counter filesystem: error %d\n",
-ret);
+#ifdef CONFIG_INFINIBAND_QIB_DCA
+ dca_unregister_notify(&dca_notifier);
+#endif
pci_unregister_driver(&qib_driver);
-
- destroy_workqueue(qib_cq_wq);
+#ifdef CONFIG_DEBUG_FS
+ qib_dbg_exit();
+#endif
qib_cpulist_count = 0;
kfree(qib_cpulist);
@@ -1270,7 +1350,7 @@ static void cleanup_device_data(struct qib_devdata *dd)
if (dd->pageshadow) {
struct page **tmpp = dd->pageshadow;
dma_addr_t *tmpd = dd->physshadow;
- int i, cnt = 0;
+ int i;
for (ctxt = 0; ctxt < dd->cfgctxts; ctxt++) {
int ctxt_tidbase = ctxt * dd->rcvtidcnt;
@@ -1283,13 +1363,13 @@ static void cleanup_device_data(struct qib_devdata *dd)
PAGE_SIZE, PCI_DMA_FROMDEVICE);
qib_release_user_pages(&tmpp[i], 1);
tmpp[i] = NULL;
- cnt++;
}
}
- tmpp = dd->pageshadow;
dd->pageshadow = NULL;
vfree(tmpp);
+ dd->physshadow = NULL;
+ vfree(tmpd);
}
/*
@@ -1311,6 +1391,7 @@ static void cleanup_device_data(struct qib_devdata *dd)
}
kfree(tmp);
kfree(dd->boardname);
+ qib_cq_exit(dd);
}
/*
@@ -1483,6 +1564,7 @@ static void qib_remove_one(struct pci_dev *pdev)
int qib_create_rcvhdrq(struct qib_devdata *dd, struct qib_ctxtdata *rcd)
{
unsigned amt;
+ int old_node_id;
if (!rcd->rcvhdrq) {
dma_addr_t phys_hdrqtail;
@@ -1492,9 +1574,13 @@ int qib_create_rcvhdrq(struct qib_devdata *dd, struct qib_ctxtdata *rcd)
sizeof(u32), PAGE_SIZE);
gfp_flags = (rcd->ctxt >= dd->first_user_ctxt) ?
GFP_USER : GFP_KERNEL;
+
+ old_node_id = dev_to_node(&dd->pcidev->dev);
+ set_dev_node(&dd->pcidev->dev, rcd->node_id);
rcd->rcvhdrq = dma_alloc_coherent(
&dd->pcidev->dev, amt, &rcd->rcvhdrq_phys,
gfp_flags | __GFP_COMP);
+ set_dev_node(&dd->pcidev->dev, old_node_id);
if (!rcd->rcvhdrq) {
qib_dev_err(dd,
@@ -1510,9 +1596,11 @@ int qib_create_rcvhdrq(struct qib_devdata *dd, struct qib_ctxtdata *rcd)
}
if (!(dd->flags & QIB_NODMA_RTAIL)) {
+ set_dev_node(&dd->pcidev->dev, rcd->node_id);
rcd->rcvhdrtail_kvaddr = dma_alloc_coherent(
&dd->pcidev->dev, PAGE_SIZE, &phys_hdrqtail,
gfp_flags);
+ set_dev_node(&dd->pcidev->dev, old_node_id);
if (!rcd->rcvhdrtail_kvaddr)
goto bail_free;
rcd->rcvhdrqtailaddr_phys = phys_hdrqtail;
@@ -1556,6 +1644,7 @@ int qib_setup_eagerbufs(struct qib_ctxtdata *rcd)
unsigned e, egrcnt, egrperchunk, chunk, egrsize, egroff;
size_t size;
gfp_t gfp_flags;
+ int old_node_id;
/*
* GFP_USER, but without GFP_FS, so buffer cache can be
@@ -1574,25 +1663,29 @@ int qib_setup_eagerbufs(struct qib_ctxtdata *rcd)
size = rcd->rcvegrbuf_size;
if (!rcd->rcvegrbuf) {
rcd->rcvegrbuf =
- kzalloc(chunk * sizeof(rcd->rcvegrbuf[0]),
- GFP_KERNEL);
+ kzalloc_node(chunk * sizeof(rcd->rcvegrbuf[0]),
+ GFP_KERNEL, rcd->node_id);
if (!rcd->rcvegrbuf)
goto bail;
}
if (!rcd->rcvegrbuf_phys) {
rcd->rcvegrbuf_phys =
- kmalloc(chunk * sizeof(rcd->rcvegrbuf_phys[0]),
- GFP_KERNEL);
+ kmalloc_node(chunk * sizeof(rcd->rcvegrbuf_phys[0]),
+ GFP_KERNEL, rcd->node_id);
if (!rcd->rcvegrbuf_phys)
goto bail_rcvegrbuf;
}
for (e = 0; e < rcd->rcvegrbuf_chunks; e++) {
if (rcd->rcvegrbuf[e])
continue;
+
+ old_node_id = dev_to_node(&dd->pcidev->dev);
+ set_dev_node(&dd->pcidev->dev, rcd->node_id);
rcd->rcvegrbuf[e] =
dma_alloc_coherent(&dd->pcidev->dev, size,
&rcd->rcvegrbuf_phys[e],
gfp_flags);
+ set_dev_node(&dd->pcidev->dev, old_node_id);
if (!rcd->rcvegrbuf[e])
goto bail_rcvegrbuf_phys;
}
diff --git a/drivers/infiniband/hw/qib/qib_qp.c b/drivers/infiniband/hw/qib/qib_qp.c
index a6a2cc2ba26..3cca55b51e5 100644
--- a/drivers/infiniband/hw/qib/qib_qp.c
+++ b/drivers/infiniband/hw/qib/qib_qp.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2012 Intel Corporation. All rights reserved.
+ * Copyright (c) 2012, 2013 Intel Corporation. All rights reserved.
* Copyright (c) 2006 - 2012 QLogic Corporation. * All rights reserved.
* Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved.
*
@@ -35,6 +35,9 @@
#include <linux/err.h>
#include <linux/vmalloc.h>
#include <linux/jhash.h>
+#ifdef CONFIG_DEBUG_FS
+#include <linux/seq_file.h>
+#endif
#include "qib.h"
@@ -222,8 +225,8 @@ static void insert_qp(struct qib_ibdev *dev, struct qib_qp *qp)
unsigned long flags;
unsigned n = qpn_hash(dev, qp->ibqp.qp_num);
- spin_lock_irqsave(&dev->qpt_lock, flags);
atomic_inc(&qp->refcount);
+ spin_lock_irqsave(&dev->qpt_lock, flags);
if (qp->ibqp.qp_num == 0)
rcu_assign_pointer(ibp->qp0, qp);
@@ -235,7 +238,6 @@ static void insert_qp(struct qib_ibdev *dev, struct qib_qp *qp)
}
spin_unlock_irqrestore(&dev->qpt_lock, flags);
- synchronize_rcu();
}
/*
@@ -247,36 +249,39 @@ static void remove_qp(struct qib_ibdev *dev, struct qib_qp *qp)
struct qib_ibport *ibp = to_iport(qp->ibqp.device, qp->port_num);
unsigned n = qpn_hash(dev, qp->ibqp.qp_num);
unsigned long flags;
+ int removed = 1;
spin_lock_irqsave(&dev->qpt_lock, flags);
if (rcu_dereference_protected(ibp->qp0,
lockdep_is_held(&dev->qpt_lock)) == qp) {
- atomic_dec(&qp->refcount);
rcu_assign_pointer(ibp->qp0, NULL);
} else if (rcu_dereference_protected(ibp->qp1,
lockdep_is_held(&dev->qpt_lock)) == qp) {
- atomic_dec(&qp->refcount);
rcu_assign_pointer(ibp->qp1, NULL);
} else {
struct qib_qp *q;
struct qib_qp __rcu **qpp;
+ removed = 0;
qpp = &dev->qp_table[n];
for (; (q = rcu_dereference_protected(*qpp,
lockdep_is_held(&dev->qpt_lock))) != NULL;
qpp = &q->next)
if (q == qp) {
- atomic_dec(&qp->refcount);
rcu_assign_pointer(*qpp,
rcu_dereference_protected(qp->next,
lockdep_is_held(&dev->qpt_lock)));
+ removed = 1;
break;
}
}
spin_unlock_irqrestore(&dev->qpt_lock, flags);
- synchronize_rcu();
+ if (removed) {
+ synchronize_rcu();
+ atomic_dec(&qp->refcount);
+ }
}
/**
@@ -334,26 +339,25 @@ struct qib_qp *qib_lookup_qpn(struct qib_ibport *ibp, u32 qpn)
{
struct qib_qp *qp = NULL;
+ rcu_read_lock();
if (unlikely(qpn <= 1)) {
- rcu_read_lock();
if (qpn == 0)
qp = rcu_dereference(ibp->qp0);
else
qp = rcu_dereference(ibp->qp1);
+ if (qp)
+ atomic_inc(&qp->refcount);
} else {
struct qib_ibdev *dev = &ppd_from_ibp(ibp)->dd->verbs_dev;
unsigned n = qpn_hash(dev, qpn);
- rcu_read_lock();
for (qp = rcu_dereference(dev->qp_table[n]); qp;
qp = rcu_dereference(qp->next))
- if (qp->ibqp.qp_num == qpn)
+ if (qp->ibqp.qp_num == qpn) {
+ atomic_inc(&qp->refcount);
break;
+ }
}
- if (qp)
- if (unlikely(!atomic_inc_not_zero(&qp->refcount)))
- qp = NULL;
-
rcu_read_unlock();
return qp;
}
@@ -1286,3 +1290,94 @@ void qib_get_credit(struct qib_qp *qp, u32 aeth)
}
}
}
+
+#ifdef CONFIG_DEBUG_FS
+
+struct qib_qp_iter {
+ struct qib_ibdev *dev;
+ struct qib_qp *qp;
+ int n;
+};
+
+struct qib_qp_iter *qib_qp_iter_init(struct qib_ibdev *dev)
+{
+ struct qib_qp_iter *iter;
+
+ iter = kzalloc(sizeof(*iter), GFP_KERNEL);
+ if (!iter)
+ return NULL;
+
+ iter->dev = dev;
+ if (qib_qp_iter_next(iter)) {
+ kfree(iter);
+ return NULL;
+ }
+
+ return iter;
+}
+
+int qib_qp_iter_next(struct qib_qp_iter *iter)
+{
+ struct qib_ibdev *dev = iter->dev;
+ int n = iter->n;
+ int ret = 1;
+ struct qib_qp *pqp = iter->qp;
+ struct qib_qp *qp;
+
+ rcu_read_lock();
+ for (; n < dev->qp_table_size; n++) {
+ if (pqp)
+ qp = rcu_dereference(pqp->next);
+ else
+ qp = rcu_dereference(dev->qp_table[n]);
+ pqp = qp;
+ if (qp) {
+ if (iter->qp)
+ atomic_dec(&iter->qp->refcount);
+ atomic_inc(&qp->refcount);
+ rcu_read_unlock();
+ iter->qp = qp;
+ iter->n = n;
+ return 0;
+ }
+ }
+ rcu_read_unlock();
+ if (iter->qp)
+ atomic_dec(&iter->qp->refcount);
+ return ret;
+}
+
+static const char * const qp_type_str[] = {
+ "SMI", "GSI", "RC", "UC", "UD",
+};
+
+void qib_qp_iter_print(struct seq_file *s, struct qib_qp_iter *iter)
+{
+ struct qib_swqe *wqe;
+ struct qib_qp *qp = iter->qp;
+
+ wqe = get_swqe_ptr(qp, qp->s_last);
+ seq_printf(s,
+ "N %d QP%u %s %u %u %u f=%x %u %u %u %u %u PSN %x %x %x %x %x (%u %u %u %u %u %u) QP%u LID %x\n",
+ iter->n,
+ qp->ibqp.qp_num,
+ qp_type_str[qp->ibqp.qp_type],
+ qp->state,
+ wqe->wr.opcode,
+ qp->s_hdrwords,
+ qp->s_flags,
+ atomic_read(&qp->s_dma_busy),
+ !list_empty(&qp->iowait),
+ qp->timeout,
+ wqe->ssn,
+ qp->s_lsn,
+ qp->s_last_psn,
+ qp->s_psn, qp->s_next_psn,
+ qp->s_sending_psn, qp->s_sending_hpsn,
+ qp->s_last, qp->s_acked, qp->s_cur,
+ qp->s_tail, qp->s_head, qp->s_size,
+ qp->remote_qpn,
+ qp->remote_ah_attr.dlid);
+}
+
+#endif
diff --git a/drivers/infiniband/hw/qib/qib_sdma.c b/drivers/infiniband/hw/qib/qib_sdma.c
index 3fc51443121..32162d35537 100644
--- a/drivers/infiniband/hw/qib/qib_sdma.c
+++ b/drivers/infiniband/hw/qib/qib_sdma.c
@@ -708,6 +708,62 @@ unlock:
return ret;
}
+/*
+ * sdma_lock should be acquired before calling this routine
+ */
+void dump_sdma_state(struct qib_pportdata *ppd)
+{
+ struct qib_sdma_desc *descq;
+ struct qib_sdma_txreq *txp, *txpnext;
+ __le64 *descqp;
+ u64 desc[2];
+ dma_addr_t addr;
+ u16 gen, dwlen, dwoffset;
+ u16 head, tail, cnt;
+
+ head = ppd->sdma_descq_head;
+ tail = ppd->sdma_descq_tail;
+ cnt = qib_sdma_descq_freecnt(ppd);
+ descq = ppd->sdma_descq;
+
+ qib_dev_porterr(ppd->dd, ppd->port,
+ "SDMA ppd->sdma_descq_head: %u\n", head);
+ qib_dev_porterr(ppd->dd, ppd->port,
+ "SDMA ppd->sdma_descq_tail: %u\n", tail);
+ qib_dev_porterr(ppd->dd, ppd->port,
+ "SDMA sdma_descq_freecnt: %u\n", cnt);
+
+ /* print info for each entry in the descriptor queue */
+ while (head != tail) {
+ char flags[6] = { 'x', 'x', 'x', 'x', 'x', 0 };
+
+ descqp = &descq[head].qw[0];
+ desc[0] = le64_to_cpu(descqp[0]);
+ desc[1] = le64_to_cpu(descqp[1]);
+ flags[0] = (desc[0] & 1<<15) ? 'I' : '-';
+ flags[1] = (desc[0] & 1<<14) ? 'L' : 'S';
+ flags[2] = (desc[0] & 1<<13) ? 'H' : '-';
+ flags[3] = (desc[0] & 1<<12) ? 'F' : '-';
+ flags[4] = (desc[0] & 1<<11) ? 'L' : '-';
+ addr = (desc[1] << 32) | ((desc[0] >> 32) & 0xfffffffcULL);
+ gen = (desc[0] >> 30) & 3ULL;
+ dwlen = (desc[0] >> 14) & (0x7ffULL << 2);
+ dwoffset = (desc[0] & 0x7ffULL) << 2;
+ qib_dev_porterr(ppd->dd, ppd->port,
+ "SDMA sdmadesc[%u]: flags:%s addr:0x%016llx gen:%u len:%u bytes offset:%u bytes\n",
+ head, flags, addr, gen, dwlen, dwoffset);
+ if (++head == ppd->sdma_descq_cnt)
+ head = 0;
+ }
+
+ /* print dma descriptor indices from the TX requests */
+ list_for_each_entry_safe(txp, txpnext, &ppd->sdma_activelist,
+ list)
+ qib_dev_porterr(ppd->dd, ppd->port,
+ "SDMA txp->start_idx: %u txp->next_descq_idx: %u\n",
+ txp->start_idx, txp->next_descq_idx);
+}
+
void qib_sdma_process_event(struct qib_pportdata *ppd,
enum qib_sdma_events event)
{
diff --git a/drivers/infiniband/hw/qib/qib_verbs.c b/drivers/infiniband/hw/qib/qib_verbs.c
index 904c384aa36..092b0bb1bb7 100644
--- a/drivers/infiniband/hw/qib/qib_verbs.c
+++ b/drivers/infiniband/hw/qib/qib_verbs.c
@@ -645,9 +645,11 @@ void qib_ib_rcv(struct qib_ctxtdata *rcd, void *rhdr, void *data, u32 tlen)
} else
goto drop;
- opcode = be32_to_cpu(ohdr->bth[0]) >> 24;
- ibp->opstats[opcode & 0x7f].n_bytes += tlen;
- ibp->opstats[opcode & 0x7f].n_packets++;
+ opcode = (be32_to_cpu(ohdr->bth[0]) >> 24) & 0x7f;
+#ifdef CONFIG_DEBUG_FS
+ rcd->opstats->stats[opcode].n_bytes += tlen;
+ rcd->opstats->stats[opcode].n_packets++;
+#endif
/* Get the destination QP number. */
qp_num = be32_to_cpu(ohdr->bth[1]) & QIB_QPN_MASK;
diff --git a/drivers/infiniband/hw/qib/qib_verbs.h b/drivers/infiniband/hw/qib/qib_verbs.h
index aff8b2c1788..012e2c7575a 100644
--- a/drivers/infiniband/hw/qib/qib_verbs.h
+++ b/drivers/infiniband/hw/qib/qib_verbs.h
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2012 Intel Corporation. All rights reserved.
+ * Copyright (c) 2012, 2013 Intel Corporation. All rights reserved.
* Copyright (c) 2006 - 2012 QLogic Corporation. All rights reserved.
* Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved.
*
@@ -41,6 +41,7 @@
#include <linux/interrupt.h>
#include <linux/kref.h>
#include <linux/workqueue.h>
+#include <linux/kthread.h>
#include <linux/completion.h>
#include <rdma/ib_pack.h>
#include <rdma/ib_user_verbs.h>
@@ -267,7 +268,8 @@ struct qib_cq_wc {
*/
struct qib_cq {
struct ib_cq ibcq;
- struct work_struct comptask;
+ struct kthread_work comptask;
+ struct qib_devdata *dd;
spinlock_t lock; /* protect changes in this struct */
u8 notify;
u8 triggered;
@@ -658,6 +660,10 @@ struct qib_opcode_stats {
u64 n_bytes; /* total number of bytes */
};
+struct qib_opcode_stats_perctx {
+ struct qib_opcode_stats stats[128];
+};
+
struct qib_ibport {
struct qib_qp __rcu *qp0;
struct qib_qp __rcu *qp1;
@@ -724,7 +730,6 @@ struct qib_ibport {
u8 vl_high_limit;
u8 sl_to_vl[16];
- struct qib_opcode_stats opstats[128];
};
@@ -768,6 +773,10 @@ struct qib_ibdev {
spinlock_t n_srqs_lock;
u32 n_mcast_grps_allocated; /* number of mcast groups allocated */
spinlock_t n_mcast_grps_lock;
+#ifdef CONFIG_DEBUG_FS
+ /* per HCA debugfs */
+ struct dentry *qib_ibdev_dbg;
+#endif
};
struct qib_verbs_counters {
@@ -832,8 +841,6 @@ static inline int qib_send_ok(struct qib_qp *qp)
!(qp->s_flags & QIB_S_ANY_WAIT_SEND));
}
-extern struct workqueue_struct *qib_cq_wq;
-
/*
* This must be called with s_lock held.
*/
@@ -910,6 +917,18 @@ void qib_init_qpn_table(struct qib_devdata *dd, struct qib_qpn_table *qpt);
void qib_free_qpn_table(struct qib_qpn_table *qpt);
+#ifdef CONFIG_DEBUG_FS
+
+struct qib_qp_iter;
+
+struct qib_qp_iter *qib_qp_iter_init(struct qib_ibdev *dev);
+
+int qib_qp_iter_next(struct qib_qp_iter *iter);
+
+void qib_qp_iter_print(struct seq_file *s, struct qib_qp_iter *iter);
+
+#endif
+
void qib_get_credit(struct qib_qp *qp, u32 aeth);
unsigned qib_pkt_delay(u32 plen, u8 snd_mult, u8 rcv_mult);
@@ -972,6 +991,10 @@ int qib_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr);
int qib_destroy_srq(struct ib_srq *ibsrq);
+int qib_cq_init(struct qib_devdata *dd);
+
+void qib_cq_exit(struct qib_devdata *dd);
+
void qib_cq_enter(struct qib_cq *cq, struct ib_wc *entry, int sig);
int qib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry);
diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
index 7ccf3284dda..f93baf8254c 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.c
+++ b/drivers/infiniband/ulp/srp/ib_srp.c
@@ -53,8 +53,8 @@
#define DRV_NAME "ib_srp"
#define PFX DRV_NAME ": "
-#define DRV_VERSION "0.2"
-#define DRV_RELDATE "November 1, 2005"
+#define DRV_VERSION "1.0"
+#define DRV_RELDATE "July 1, 2013"
MODULE_AUTHOR("Roland Dreier");
MODULE_DESCRIPTION("InfiniBand SCSI RDMA Protocol initiator "
@@ -231,14 +231,16 @@ static int srp_create_target_ib(struct srp_target_port *target)
return -ENOMEM;
recv_cq = ib_create_cq(target->srp_host->srp_dev->dev,
- srp_recv_completion, NULL, target, SRP_RQ_SIZE, 0);
+ srp_recv_completion, NULL, target, SRP_RQ_SIZE,
+ target->comp_vector);
if (IS_ERR(recv_cq)) {
ret = PTR_ERR(recv_cq);
goto err;
}
send_cq = ib_create_cq(target->srp_host->srp_dev->dev,
- srp_send_completion, NULL, target, SRP_SQ_SIZE, 0);
+ srp_send_completion, NULL, target, SRP_SQ_SIZE,
+ target->comp_vector);
if (IS_ERR(send_cq)) {
ret = PTR_ERR(send_cq);
goto err_recv_cq;
@@ -542,11 +544,11 @@ static void srp_remove_work(struct work_struct *work)
WARN_ON_ONCE(target->state != SRP_TARGET_REMOVED);
+ srp_remove_target(target);
+
spin_lock(&target->srp_host->target_lock);
list_del(&target->list);
spin_unlock(&target->srp_host->target_lock);
-
- srp_remove_target(target);
}
static void srp_rport_delete(struct srp_rport *rport)
@@ -1744,18 +1746,24 @@ static int srp_abort(struct scsi_cmnd *scmnd)
{
struct srp_target_port *target = host_to_target(scmnd->device->host);
struct srp_request *req = (struct srp_request *) scmnd->host_scribble;
+ int ret;
shost_printk(KERN_ERR, target->scsi_host, "SRP abort called\n");
if (!req || !srp_claim_req(target, req, scmnd))
return FAILED;
- srp_send_tsk_mgmt(target, req->index, scmnd->device->lun,
- SRP_TSK_ABORT_TASK);
+ if (srp_send_tsk_mgmt(target, req->index, scmnd->device->lun,
+ SRP_TSK_ABORT_TASK) == 0)
+ ret = SUCCESS;
+ else if (target->transport_offline)
+ ret = FAST_IO_FAIL;
+ else
+ ret = FAILED;
srp_free_req(target, req, scmnd, 0);
scmnd->result = DID_ABORT << 16;
scmnd->scsi_done(scmnd);
- return SUCCESS;
+ return ret;
}
static int srp_reset_device(struct scsi_cmnd *scmnd)
@@ -1891,6 +1899,14 @@ static ssize_t show_local_ib_device(struct device *dev,
return sprintf(buf, "%s\n", target->srp_host->srp_dev->dev->name);
}
+static ssize_t show_comp_vector(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct srp_target_port *target = host_to_target(class_to_shost(dev));
+
+ return sprintf(buf, "%d\n", target->comp_vector);
+}
+
static ssize_t show_cmd_sg_entries(struct device *dev,
struct device_attribute *attr, char *buf)
{
@@ -1917,6 +1933,7 @@ static DEVICE_ATTR(req_lim, S_IRUGO, show_req_lim, NULL);
static DEVICE_ATTR(zero_req_lim, S_IRUGO, show_zero_req_lim, NULL);
static DEVICE_ATTR(local_ib_port, S_IRUGO, show_local_ib_port, NULL);
static DEVICE_ATTR(local_ib_device, S_IRUGO, show_local_ib_device, NULL);
+static DEVICE_ATTR(comp_vector, S_IRUGO, show_comp_vector, NULL);
static DEVICE_ATTR(cmd_sg_entries, S_IRUGO, show_cmd_sg_entries, NULL);
static DEVICE_ATTR(allow_ext_sg, S_IRUGO, show_allow_ext_sg, NULL);
@@ -1931,6 +1948,7 @@ static struct device_attribute *srp_host_attrs[] = {
&dev_attr_zero_req_lim,
&dev_attr_local_ib_port,
&dev_attr_local_ib_device,
+ &dev_attr_comp_vector,
&dev_attr_cmd_sg_entries,
&dev_attr_allow_ext_sg,
NULL
@@ -1946,6 +1964,7 @@ static struct scsi_host_template srp_template = {
.eh_abort_handler = srp_abort,
.eh_device_reset_handler = srp_reset_device,
.eh_host_reset_handler = srp_reset_host,
+ .skip_settle_delay = true,
.sg_tablesize = SRP_DEF_SG_TABLESIZE,
.can_queue = SRP_CMD_SQ_SIZE,
.this_id = -1,
@@ -2001,6 +2020,36 @@ static struct class srp_class = {
.dev_release = srp_release_dev
};
+/**
+ * srp_conn_unique() - check whether the connection to a target is unique
+ */
+static bool srp_conn_unique(struct srp_host *host,
+ struct srp_target_port *target)
+{
+ struct srp_target_port *t;
+ bool ret = false;
+
+ if (target->state == SRP_TARGET_REMOVED)
+ goto out;
+
+ ret = true;
+
+ spin_lock(&host->target_lock);
+ list_for_each_entry(t, &host->target_list, list) {
+ if (t != target &&
+ target->id_ext == t->id_ext &&
+ target->ioc_guid == t->ioc_guid &&
+ target->initiator_ext == t->initiator_ext) {
+ ret = false;
+ break;
+ }
+ }
+ spin_unlock(&host->target_lock);
+
+out:
+ return ret;
+}
+
/*
* Target ports are added by writing
*
@@ -2023,6 +2072,7 @@ enum {
SRP_OPT_CMD_SG_ENTRIES = 1 << 9,
SRP_OPT_ALLOW_EXT_SG = 1 << 10,
SRP_OPT_SG_TABLESIZE = 1 << 11,
+ SRP_OPT_COMP_VECTOR = 1 << 12,
SRP_OPT_ALL = (SRP_OPT_ID_EXT |
SRP_OPT_IOC_GUID |
SRP_OPT_DGID |
@@ -2043,6 +2093,7 @@ static const match_table_t srp_opt_tokens = {
{ SRP_OPT_CMD_SG_ENTRIES, "cmd_sg_entries=%u" },
{ SRP_OPT_ALLOW_EXT_SG, "allow_ext_sg=%u" },
{ SRP_OPT_SG_TABLESIZE, "sg_tablesize=%u" },
+ { SRP_OPT_COMP_VECTOR, "comp_vector=%u" },
{ SRP_OPT_ERR, NULL }
};
@@ -2198,6 +2249,14 @@ static int srp_parse_options(const char *buf, struct srp_target_port *target)
target->sg_tablesize = token;
break;
+ case SRP_OPT_COMP_VECTOR:
+ if (match_int(args, &token) || token < 0) {
+ pr_warn("bad comp_vector parameter '%s'\n", p);
+ goto out;
+ }
+ target->comp_vector = token;
+ break;
+
default:
pr_warn("unknown parameter or missing value '%s' in target creation request\n",
p);
@@ -2257,6 +2316,16 @@ static ssize_t srp_create_target(struct device *dev,
if (ret)
goto err;
+ if (!srp_conn_unique(target->srp_host, target)) {
+ shost_printk(KERN_INFO, target->scsi_host,
+ PFX "Already connected to target port with id_ext=%016llx;ioc_guid=%016llx;initiator_ext=%016llx\n",
+ be64_to_cpu(target->id_ext),
+ be64_to_cpu(target->ioc_guid),
+ be64_to_cpu(target->initiator_ext));
+ ret = -EEXIST;
+ goto err;
+ }
+
if (!host->srp_dev->fmr_pool && !target->allow_ext_sg &&
target->cmd_sg_cnt < target->sg_tablesize) {
pr_warn("No FMR pool and no external indirect descriptors, limiting sg_tablesize to cmd_sg_cnt\n");
@@ -2507,6 +2576,8 @@ static void srp_remove_one(struct ib_device *device)
struct srp_target_port *target;
srp_dev = ib_get_client_data(device, &srp_client);
+ if (!srp_dev)
+ return;
list_for_each_entry_safe(host, tmp_host, &srp_dev->dev_list, list) {
device_unregister(&host->dev);
diff --git a/drivers/infiniband/ulp/srp/ib_srp.h b/drivers/infiniband/ulp/srp/ib_srp.h
index 66fbedda457..e641088c14d 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.h
+++ b/drivers/infiniband/ulp/srp/ib_srp.h
@@ -156,6 +156,7 @@ struct srp_target_port {
char target_name[32];
unsigned int scsi_id;
unsigned int sg_tablesize;
+ int comp_vector;
struct ib_sa_path_rec path;
__be16 orig_dgid[8];
diff --git a/drivers/net/ethernet/mellanox/Kconfig b/drivers/net/ethernet/mellanox/Kconfig
index bcdbc14aeff..8cf7563a8d9 100644
--- a/drivers/net/ethernet/mellanox/Kconfig
+++ b/drivers/net/ethernet/mellanox/Kconfig
@@ -19,5 +19,6 @@ config NET_VENDOR_MELLANOX
if NET_VENDOR_MELLANOX
source "drivers/net/ethernet/mellanox/mlx4/Kconfig"
+source "drivers/net/ethernet/mellanox/mlx5/core/Kconfig"
endif # NET_VENDOR_MELLANOX
diff --git a/drivers/net/ethernet/mellanox/Makefile b/drivers/net/ethernet/mellanox/Makefile
index 37afb968337..38fe32ef5e5 100644
--- a/drivers/net/ethernet/mellanox/Makefile
+++ b/drivers/net/ethernet/mellanox/Makefile
@@ -3,3 +3,4 @@
#
obj-$(CONFIG_MLX4_CORE) += mlx4/
+obj-$(CONFIG_MLX5_CORE) += mlx5/core/
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/Kconfig b/drivers/net/ethernet/mellanox/mlx5/core/Kconfig
new file mode 100644
index 00000000000..21962828925
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx5/core/Kconfig
@@ -0,0 +1,18 @@
+#
+# Mellanox driver configuration
+#
+
+config MLX5_CORE
+ tristate
+ depends on PCI && X86
+ default n
+
+config MLX5_DEBUG
+ bool "Verbose debugging output" if (MLX5_CORE && EXPERT)
+ depends on MLX5_CORE
+ default y
+ ---help---
+ This option causes debugging code to be compiled into the
+ mlx5_core driver. The output can be turned on via the
+ debug_mask module parameter (which can also be set after
+ the driver is loaded through sysfs).
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/Makefile b/drivers/net/ethernet/mellanox/mlx5/core/Makefile
new file mode 100644
index 00000000000..105780bb980
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx5/core/Makefile
@@ -0,0 +1,5 @@
+obj-$(CONFIG_MLX5_CORE) += mlx5_core.o
+
+mlx5_core-y := main.o cmd.o debugfs.o fw.o eq.o uar.o pagealloc.o \
+ health.o mcg.o cq.o srq.o alloc.o qp.o port.o mr.o pd.o \
+ mad.o
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/alloc.c b/drivers/net/ethernet/mellanox/mlx5/core/alloc.c
new file mode 100644
index 00000000000..b215742b842
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx5/core/alloc.c
@@ -0,0 +1,238 @@
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/export.h>
+#include <linux/bitmap.h>
+#include <linux/dma-mapping.h>
+#include <linux/vmalloc.h>
+#include <linux/mlx5/driver.h>
+
+#include "mlx5_core.h"
+
+/* Handling for queue buffers -- we allocate a bunch of memory and
+ * register it in a memory region at HCA virtual address 0. If the
+ * requested size is > max_direct, we split the allocation into
+ * multiple pages, so we don't require too much contiguous memory.
+ */
+
+int mlx5_buf_alloc(struct mlx5_core_dev *dev, int size, int max_direct,
+ struct mlx5_buf *buf)
+{
+ dma_addr_t t;
+
+ buf->size = size;
+ if (size <= max_direct) {
+ buf->nbufs = 1;
+ buf->npages = 1;
+ buf->page_shift = get_order(size) + PAGE_SHIFT;
+ buf->direct.buf = dma_zalloc_coherent(&dev->pdev->dev,
+ size, &t, GFP_KERNEL);
+ if (!buf->direct.buf)
+ return -ENOMEM;
+
+ buf->direct.map = t;
+
+ while (t & ((1 << buf->page_shift) - 1)) {
+ --buf->page_shift;
+ buf->npages *= 2;
+ }
+ } else {
+ int i;
+
+ buf->direct.buf = NULL;
+ buf->nbufs = (size + PAGE_SIZE - 1) / PAGE_SIZE;
+ buf->npages = buf->nbufs;
+ buf->page_shift = PAGE_SHIFT;
+ buf->page_list = kcalloc(buf->nbufs, sizeof(*buf->page_list),
+ GFP_KERNEL);
+ if (!buf->page_list)
+ return -ENOMEM;
+
+ for (i = 0; i < buf->nbufs; i++) {
+ buf->page_list[i].buf =
+ dma_zalloc_coherent(&dev->pdev->dev, PAGE_SIZE,
+ &t, GFP_KERNEL);
+ if (!buf->page_list[i].buf)
+ goto err_free;
+
+ buf->page_list[i].map = t;
+ }
+
+ if (BITS_PER_LONG == 64) {
+ struct page **pages;
+ pages = kmalloc(sizeof(*pages) * buf->nbufs, GFP_KERNEL);
+ if (!pages)
+ goto err_free;
+ for (i = 0; i < buf->nbufs; i++)
+ pages[i] = virt_to_page(buf->page_list[i].buf);
+ buf->direct.buf = vmap(pages, buf->nbufs, VM_MAP, PAGE_KERNEL);
+ kfree(pages);
+ if (!buf->direct.buf)
+ goto err_free;
+ }
+ }
+
+ return 0;
+
+err_free:
+ mlx5_buf_free(dev, buf);
+
+ return -ENOMEM;
+}
+EXPORT_SYMBOL_GPL(mlx5_buf_alloc);
+
+void mlx5_buf_free(struct mlx5_core_dev *dev, struct mlx5_buf *buf)
+{
+ int i;
+
+ if (buf->nbufs == 1)
+ dma_free_coherent(&dev->pdev->dev, buf->size, buf->direct.buf,
+ buf->direct.map);
+ else {
+ if (BITS_PER_LONG == 64 && buf->direct.buf)
+ vunmap(buf->direct.buf);
+
+ for (i = 0; i < buf->nbufs; i++)
+ if (buf->page_list[i].buf)
+ dma_free_coherent(&dev->pdev->dev, PAGE_SIZE,
+ buf->page_list[i].buf,
+ buf->page_list[i].map);
+ kfree(buf->page_list);
+ }
+}
+EXPORT_SYMBOL_GPL(mlx5_buf_free);
+
+static struct mlx5_db_pgdir *mlx5_alloc_db_pgdir(struct device *dma_device)
+{
+ struct mlx5_db_pgdir *pgdir;
+
+ pgdir = kzalloc(sizeof(*pgdir), GFP_KERNEL);
+ if (!pgdir)
+ return NULL;
+
+ bitmap_fill(pgdir->bitmap, MLX5_DB_PER_PAGE);
+ pgdir->db_page = dma_alloc_coherent(dma_device, PAGE_SIZE,
+ &pgdir->db_dma, GFP_KERNEL);
+ if (!pgdir->db_page) {
+ kfree(pgdir);
+ return NULL;
+ }
+
+ return pgdir;
+}
+
+static int mlx5_alloc_db_from_pgdir(struct mlx5_db_pgdir *pgdir,
+ struct mlx5_db *db)
+{
+ int offset;
+ int i;
+
+ i = find_first_bit(pgdir->bitmap, MLX5_DB_PER_PAGE);
+ if (i >= MLX5_DB_PER_PAGE)
+ return -ENOMEM;
+
+ __clear_bit(i, pgdir->bitmap);
+
+ db->u.pgdir = pgdir;
+ db->index = i;
+ offset = db->index * L1_CACHE_BYTES;
+ db->db = pgdir->db_page + offset / sizeof(*pgdir->db_page);
+ db->dma = pgdir->db_dma + offset;
+
+ return 0;
+}
+
+int mlx5_db_alloc(struct mlx5_core_dev *dev, struct mlx5_db *db)
+{
+ struct mlx5_db_pgdir *pgdir;
+ int ret = 0;
+
+ mutex_lock(&dev->priv.pgdir_mutex);
+
+ list_for_each_entry(pgdir, &dev->priv.pgdir_list, list)
+ if (!mlx5_alloc_db_from_pgdir(pgdir, db))
+ goto out;
+
+ pgdir = mlx5_alloc_db_pgdir(&(dev->pdev->dev));
+ if (!pgdir) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ list_add(&pgdir->list, &dev->priv.pgdir_list);
+
+ /* This should never fail -- we just allocated an empty page: */
+ WARN_ON(mlx5_alloc_db_from_pgdir(pgdir, db));
+
+out:
+ mutex_unlock(&dev->priv.pgdir_mutex);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(mlx5_db_alloc);
+
+void mlx5_db_free(struct mlx5_core_dev *dev, struct mlx5_db *db)
+{
+ mutex_lock(&dev->priv.pgdir_mutex);
+
+ __set_bit(db->index, db->u.pgdir->bitmap);
+
+ if (bitmap_full(db->u.pgdir->bitmap, MLX5_DB_PER_PAGE)) {
+ dma_free_coherent(&(dev->pdev->dev), PAGE_SIZE,
+ db->u.pgdir->db_page, db->u.pgdir->db_dma);
+ list_del(&db->u.pgdir->list);
+ kfree(db->u.pgdir);
+ }
+
+ mutex_unlock(&dev->priv.pgdir_mutex);
+}
+EXPORT_SYMBOL_GPL(mlx5_db_free);
+
+
+void mlx5_fill_page_array(struct mlx5_buf *buf, __be64 *pas)
+{
+ u64 addr;
+ int i;
+
+ for (i = 0; i < buf->npages; i++) {
+ if (buf->nbufs == 1)
+ addr = buf->direct.map + (i << buf->page_shift);
+ else
+ addr = buf->page_list[i].map;
+
+ pas[i] = cpu_to_be64(addr);
+ }
+}
+EXPORT_SYMBOL_GPL(mlx5_fill_page_array);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/cmd.c b/drivers/net/ethernet/mellanox/mlx5/core/cmd.c
new file mode 100644
index 00000000000..205753a04cf
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx5/core/cmd.c
@@ -0,0 +1,1515 @@
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <asm-generic/kmap_types.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/pci.h>
+#include <linux/dma-mapping.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/random.h>
+#include <linux/io-mapping.h>
+#include <linux/mlx5/driver.h>
+#include <linux/debugfs.h>
+
+#include "mlx5_core.h"
+
+enum {
+ CMD_IF_REV = 3,
+};
+
+enum {
+ CMD_MODE_POLLING,
+ CMD_MODE_EVENTS
+};
+
+enum {
+ NUM_LONG_LISTS = 2,
+ NUM_MED_LISTS = 64,
+ LONG_LIST_SIZE = (2ULL * 1024 * 1024 * 1024 / PAGE_SIZE) * 8 + 16 +
+ MLX5_CMD_DATA_BLOCK_SIZE,
+ MED_LIST_SIZE = 16 + MLX5_CMD_DATA_BLOCK_SIZE,
+};
+
+enum {
+ MLX5_CMD_DELIVERY_STAT_OK = 0x0,
+ MLX5_CMD_DELIVERY_STAT_SIGNAT_ERR = 0x1,
+ MLX5_CMD_DELIVERY_STAT_TOK_ERR = 0x2,
+ MLX5_CMD_DELIVERY_STAT_BAD_BLK_NUM_ERR = 0x3,
+ MLX5_CMD_DELIVERY_STAT_OUT_PTR_ALIGN_ERR = 0x4,
+ MLX5_CMD_DELIVERY_STAT_IN_PTR_ALIGN_ERR = 0x5,
+ MLX5_CMD_DELIVERY_STAT_FW_ERR = 0x6,
+ MLX5_CMD_DELIVERY_STAT_IN_LENGTH_ERR = 0x7,
+ MLX5_CMD_DELIVERY_STAT_OUT_LENGTH_ERR = 0x8,
+ MLX5_CMD_DELIVERY_STAT_RES_FLD_NOT_CLR_ERR = 0x9,
+ MLX5_CMD_DELIVERY_STAT_CMD_DESCR_ERR = 0x10,
+};
+
+enum {
+ MLX5_CMD_STAT_OK = 0x0,
+ MLX5_CMD_STAT_INT_ERR = 0x1,
+ MLX5_CMD_STAT_BAD_OP_ERR = 0x2,
+ MLX5_CMD_STAT_BAD_PARAM_ERR = 0x3,
+ MLX5_CMD_STAT_BAD_SYS_STATE_ERR = 0x4,
+ MLX5_CMD_STAT_BAD_RES_ERR = 0x5,
+ MLX5_CMD_STAT_RES_BUSY = 0x6,
+ MLX5_CMD_STAT_LIM_ERR = 0x8,
+ MLX5_CMD_STAT_BAD_RES_STATE_ERR = 0x9,
+ MLX5_CMD_STAT_IX_ERR = 0xa,
+ MLX5_CMD_STAT_NO_RES_ERR = 0xf,
+ MLX5_CMD_STAT_BAD_INP_LEN_ERR = 0x50,
+ MLX5_CMD_STAT_BAD_OUTP_LEN_ERR = 0x51,
+ MLX5_CMD_STAT_BAD_QP_STATE_ERR = 0x10,
+ MLX5_CMD_STAT_BAD_PKT_ERR = 0x30,
+ MLX5_CMD_STAT_BAD_SIZE_OUTS_CQES_ERR = 0x40,
+};
+
+static struct mlx5_cmd_work_ent *alloc_cmd(struct mlx5_cmd *cmd,
+ struct mlx5_cmd_msg *in,
+ struct mlx5_cmd_msg *out,
+ mlx5_cmd_cbk_t cbk,
+ void *context, int page_queue)
+{
+ gfp_t alloc_flags = cbk ? GFP_ATOMIC : GFP_KERNEL;
+ struct mlx5_cmd_work_ent *ent;
+
+ ent = kzalloc(sizeof(*ent), alloc_flags);
+ if (!ent)
+ return ERR_PTR(-ENOMEM);
+
+ ent->in = in;
+ ent->out = out;
+ ent->callback = cbk;
+ ent->context = context;
+ ent->cmd = cmd;
+ ent->page_queue = page_queue;
+
+ return ent;
+}
+
+static u8 alloc_token(struct mlx5_cmd *cmd)
+{
+ u8 token;
+
+ spin_lock(&cmd->token_lock);
+ token = cmd->token++ % 255 + 1;
+ spin_unlock(&cmd->token_lock);
+
+ return token;
+}
+
+static int alloc_ent(struct mlx5_cmd *cmd)
+{
+ unsigned long flags;
+ int ret;
+
+ spin_lock_irqsave(&cmd->alloc_lock, flags);
+ ret = find_first_bit(&cmd->bitmask, cmd->max_reg_cmds);
+ if (ret < cmd->max_reg_cmds)
+ clear_bit(ret, &cmd->bitmask);
+ spin_unlock_irqrestore(&cmd->alloc_lock, flags);
+
+ return ret < cmd->max_reg_cmds ? ret : -ENOMEM;
+}
+
+static void free_ent(struct mlx5_cmd *cmd, int idx)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&cmd->alloc_lock, flags);
+ set_bit(idx, &cmd->bitmask);
+ spin_unlock_irqrestore(&cmd->alloc_lock, flags);
+}
+
+static struct mlx5_cmd_layout *get_inst(struct mlx5_cmd *cmd, int idx)
+{
+ return cmd->cmd_buf + (idx << cmd->log_stride);
+}
+
+static u8 xor8_buf(void *buf, int len)
+{
+ u8 *ptr = buf;
+ u8 sum = 0;
+ int i;
+
+ for (i = 0; i < len; i++)
+ sum ^= ptr[i];
+
+ return sum;
+}
+
+static int verify_block_sig(struct mlx5_cmd_prot_block *block)
+{
+ if (xor8_buf(block->rsvd0, sizeof(*block) - sizeof(block->data) - 1) != 0xff)
+ return -EINVAL;
+
+ if (xor8_buf(block, sizeof(*block)) != 0xff)
+ return -EINVAL;
+
+ return 0;
+}
+
+static void calc_block_sig(struct mlx5_cmd_prot_block *block, u8 token)
+{
+ block->token = token;
+ block->ctrl_sig = ~xor8_buf(block->rsvd0, sizeof(*block) - sizeof(block->data) - 2);
+ block->sig = ~xor8_buf(block, sizeof(*block) - 1);
+}
+
+static void calc_chain_sig(struct mlx5_cmd_msg *msg, u8 token)
+{
+ struct mlx5_cmd_mailbox *next = msg->next;
+
+ while (next) {
+ calc_block_sig(next->buf, token);
+ next = next->next;
+ }
+}
+
+static void set_signature(struct mlx5_cmd_work_ent *ent)
+{
+ ent->lay->sig = ~xor8_buf(ent->lay, sizeof(*ent->lay));
+ calc_chain_sig(ent->in, ent->token);
+ calc_chain_sig(ent->out, ent->token);
+}
+
+static void poll_timeout(struct mlx5_cmd_work_ent *ent)
+{
+ unsigned long poll_end = jiffies + msecs_to_jiffies(MLX5_CMD_TIMEOUT_MSEC + 1000);
+ u8 own;
+
+ do {
+ own = ent->lay->status_own;
+ if (!(own & CMD_OWNER_HW)) {
+ ent->ret = 0;
+ return;
+ }
+ usleep_range(5000, 10000);
+ } while (time_before(jiffies, poll_end));
+
+ ent->ret = -ETIMEDOUT;
+}
+
+static void free_cmd(struct mlx5_cmd_work_ent *ent)
+{
+ kfree(ent);
+}
+
+
+static int verify_signature(struct mlx5_cmd_work_ent *ent)
+{
+ struct mlx5_cmd_mailbox *next = ent->out->next;
+ int err;
+ u8 sig;
+
+ sig = xor8_buf(ent->lay, sizeof(*ent->lay));
+ if (sig != 0xff)
+ return -EINVAL;
+
+ while (next) {
+ err = verify_block_sig(next->buf);
+ if (err)
+ return err;
+
+ next = next->next;
+ }
+
+ return 0;
+}
+
+static void dump_buf(void *buf, int size, int data_only, int offset)
+{
+ __be32 *p = buf;
+ int i;
+
+ for (i = 0; i < size; i += 16) {
+ pr_debug("%03x: %08x %08x %08x %08x\n", offset, be32_to_cpu(p[0]),
+ be32_to_cpu(p[1]), be32_to_cpu(p[2]),
+ be32_to_cpu(p[3]));
+ p += 4;
+ offset += 16;
+ }
+ if (!data_only)
+ pr_debug("\n");
+}
+
+const char *mlx5_command_str(int command)
+{
+ switch (command) {
+ case MLX5_CMD_OP_QUERY_HCA_CAP:
+ return "QUERY_HCA_CAP";
+
+ case MLX5_CMD_OP_SET_HCA_CAP:
+ return "SET_HCA_CAP";
+
+ case MLX5_CMD_OP_QUERY_ADAPTER:
+ return "QUERY_ADAPTER";
+
+ case MLX5_CMD_OP_INIT_HCA:
+ return "INIT_HCA";
+
+ case MLX5_CMD_OP_TEARDOWN_HCA:
+ return "TEARDOWN_HCA";
+
+ case MLX5_CMD_OP_QUERY_PAGES:
+ return "QUERY_PAGES";
+
+ case MLX5_CMD_OP_MANAGE_PAGES:
+ return "MANAGE_PAGES";
+
+ case MLX5_CMD_OP_CREATE_MKEY:
+ return "CREATE_MKEY";
+
+ case MLX5_CMD_OP_QUERY_MKEY:
+ return "QUERY_MKEY";
+
+ case MLX5_CMD_OP_DESTROY_MKEY:
+ return "DESTROY_MKEY";
+
+ case MLX5_CMD_OP_QUERY_SPECIAL_CONTEXTS:
+ return "QUERY_SPECIAL_CONTEXTS";
+
+ case MLX5_CMD_OP_CREATE_EQ:
+ return "CREATE_EQ";
+
+ case MLX5_CMD_OP_DESTROY_EQ:
+ return "DESTROY_EQ";
+
+ case MLX5_CMD_OP_QUERY_EQ:
+ return "QUERY_EQ";
+
+ case MLX5_CMD_OP_CREATE_CQ:
+ return "CREATE_CQ";
+
+ case MLX5_CMD_OP_DESTROY_CQ:
+ return "DESTROY_CQ";
+
+ case MLX5_CMD_OP_QUERY_CQ:
+ return "QUERY_CQ";
+
+ case MLX5_CMD_OP_MODIFY_CQ:
+ return "MODIFY_CQ";
+
+ case MLX5_CMD_OP_CREATE_QP:
+ return "CREATE_QP";
+
+ case MLX5_CMD_OP_DESTROY_QP:
+ return "DESTROY_QP";
+
+ case MLX5_CMD_OP_RST2INIT_QP:
+ return "RST2INIT_QP";
+
+ case MLX5_CMD_OP_INIT2RTR_QP:
+ return "INIT2RTR_QP";
+
+ case MLX5_CMD_OP_RTR2RTS_QP:
+ return "RTR2RTS_QP";
+
+ case MLX5_CMD_OP_RTS2RTS_QP:
+ return "RTS2RTS_QP";
+
+ case MLX5_CMD_OP_SQERR2RTS_QP:
+ return "SQERR2RTS_QP";
+
+ case MLX5_CMD_OP_2ERR_QP:
+ return "2ERR_QP";
+
+ case MLX5_CMD_OP_RTS2SQD_QP:
+ return "RTS2SQD_QP";
+
+ case MLX5_CMD_OP_SQD2RTS_QP:
+ return "SQD2RTS_QP";
+
+ case MLX5_CMD_OP_2RST_QP:
+ return "2RST_QP";
+
+ case MLX5_CMD_OP_QUERY_QP:
+ return "QUERY_QP";
+
+ case MLX5_CMD_OP_CONF_SQP:
+ return "CONF_SQP";
+
+ case MLX5_CMD_OP_MAD_IFC:
+ return "MAD_IFC";
+
+ case MLX5_CMD_OP_INIT2INIT_QP:
+ return "INIT2INIT_QP";
+
+ case MLX5_CMD_OP_SUSPEND_QP:
+ return "SUSPEND_QP";
+
+ case MLX5_CMD_OP_UNSUSPEND_QP:
+ return "UNSUSPEND_QP";
+
+ case MLX5_CMD_OP_SQD2SQD_QP:
+ return "SQD2SQD_QP";
+
+ case MLX5_CMD_OP_ALLOC_QP_COUNTER_SET:
+ return "ALLOC_QP_COUNTER_SET";
+
+ case MLX5_CMD_OP_DEALLOC_QP_COUNTER_SET:
+ return "DEALLOC_QP_COUNTER_SET";
+
+ case MLX5_CMD_OP_QUERY_QP_COUNTER_SET:
+ return "QUERY_QP_COUNTER_SET";
+
+ case MLX5_CMD_OP_CREATE_PSV:
+ return "CREATE_PSV";
+
+ case MLX5_CMD_OP_DESTROY_PSV:
+ return "DESTROY_PSV";
+
+ case MLX5_CMD_OP_QUERY_PSV:
+ return "QUERY_PSV";
+
+ case MLX5_CMD_OP_QUERY_SIG_RULE_TABLE:
+ return "QUERY_SIG_RULE_TABLE";
+
+ case MLX5_CMD_OP_QUERY_BLOCK_SIZE_TABLE:
+ return "QUERY_BLOCK_SIZE_TABLE";
+
+ case MLX5_CMD_OP_CREATE_SRQ:
+ return "CREATE_SRQ";
+
+ case MLX5_CMD_OP_DESTROY_SRQ:
+ return "DESTROY_SRQ";
+
+ case MLX5_CMD_OP_QUERY_SRQ:
+ return "QUERY_SRQ";
+
+ case MLX5_CMD_OP_ARM_RQ:
+ return "ARM_RQ";
+
+ case MLX5_CMD_OP_RESIZE_SRQ:
+ return "RESIZE_SRQ";
+
+ case MLX5_CMD_OP_ALLOC_PD:
+ return "ALLOC_PD";
+
+ case MLX5_CMD_OP_DEALLOC_PD:
+ return "DEALLOC_PD";
+
+ case MLX5_CMD_OP_ALLOC_UAR:
+ return "ALLOC_UAR";
+
+ case MLX5_CMD_OP_DEALLOC_UAR:
+ return "DEALLOC_UAR";
+
+ case MLX5_CMD_OP_ATTACH_TO_MCG:
+ return "ATTACH_TO_MCG";
+
+ case MLX5_CMD_OP_DETACH_FROM_MCG:
+ return "DETACH_FROM_MCG";
+
+ case MLX5_CMD_OP_ALLOC_XRCD:
+ return "ALLOC_XRCD";
+
+ case MLX5_CMD_OP_DEALLOC_XRCD:
+ return "DEALLOC_XRCD";
+
+ case MLX5_CMD_OP_ACCESS_REG:
+ return "MLX5_CMD_OP_ACCESS_REG";
+
+ default: return "unknown command opcode";
+ }
+}
+
+static void dump_command(struct mlx5_core_dev *dev,
+ struct mlx5_cmd_work_ent *ent, int input)
+{
+ u16 op = be16_to_cpu(((struct mlx5_inbox_hdr *)(ent->lay->in))->opcode);
+ struct mlx5_cmd_msg *msg = input ? ent->in : ent->out;
+ struct mlx5_cmd_mailbox *next = msg->next;
+ int data_only;
+ int offset = 0;
+ int dump_len;
+
+ data_only = !!(mlx5_core_debug_mask & (1 << MLX5_CMD_DATA));
+
+ if (data_only)
+ mlx5_core_dbg_mask(dev, 1 << MLX5_CMD_DATA,
+ "dump command data %s(0x%x) %s\n",
+ mlx5_command_str(op), op,
+ input ? "INPUT" : "OUTPUT");
+ else
+ mlx5_core_dbg(dev, "dump command %s(0x%x) %s\n",
+ mlx5_command_str(op), op,
+ input ? "INPUT" : "OUTPUT");
+
+ if (data_only) {
+ if (input) {
+ dump_buf(ent->lay->in, sizeof(ent->lay->in), 1, offset);
+ offset += sizeof(ent->lay->in);
+ } else {
+ dump_buf(ent->lay->out, sizeof(ent->lay->out), 1, offset);
+ offset += sizeof(ent->lay->out);
+ }
+ } else {
+ dump_buf(ent->lay, sizeof(*ent->lay), 0, offset);
+ offset += sizeof(*ent->lay);
+ }
+
+ while (next && offset < msg->len) {
+ if (data_only) {
+ dump_len = min_t(int, MLX5_CMD_DATA_BLOCK_SIZE, msg->len - offset);
+ dump_buf(next->buf, dump_len, 1, offset);
+ offset += MLX5_CMD_DATA_BLOCK_SIZE;
+ } else {
+ mlx5_core_dbg(dev, "command block:\n");
+ dump_buf(next->buf, sizeof(struct mlx5_cmd_prot_block), 0, offset);
+ offset += sizeof(struct mlx5_cmd_prot_block);
+ }
+ next = next->next;
+ }
+
+ if (data_only)
+ pr_debug("\n");
+}
+
+static void cmd_work_handler(struct work_struct *work)
+{
+ struct mlx5_cmd_work_ent *ent = container_of(work, struct mlx5_cmd_work_ent, work);
+ struct mlx5_cmd *cmd = ent->cmd;
+ struct mlx5_core_dev *dev = container_of(cmd, struct mlx5_core_dev, cmd);
+ struct mlx5_cmd_layout *lay;
+ struct semaphore *sem;
+
+ sem = ent->page_queue ? &cmd->pages_sem : &cmd->sem;
+ down(sem);
+ if (!ent->page_queue) {
+ ent->idx = alloc_ent(cmd);
+ if (ent->idx < 0) {
+ mlx5_core_err(dev, "failed to allocate command entry\n");
+ up(sem);
+ return;
+ }
+ } else {
+ ent->idx = cmd->max_reg_cmds;
+ }
+
+ ent->token = alloc_token(cmd);
+ cmd->ent_arr[ent->idx] = ent;
+ lay = get_inst(cmd, ent->idx);
+ ent->lay = lay;
+ memset(lay, 0, sizeof(*lay));
+ memcpy(lay->in, ent->in->first.data, sizeof(lay->in));
+ if (ent->in->next)
+ lay->in_ptr = cpu_to_be64(ent->in->next->dma);
+ lay->inlen = cpu_to_be32(ent->in->len);
+ if (ent->out->next)
+ lay->out_ptr = cpu_to_be64(ent->out->next->dma);
+ lay->outlen = cpu_to_be32(ent->out->len);
+ lay->type = MLX5_PCI_CMD_XPORT;
+ lay->token = ent->token;
+ lay->status_own = CMD_OWNER_HW;
+ if (!cmd->checksum_disabled)
+ set_signature(ent);
+ dump_command(dev, ent, 1);
+ ktime_get_ts(&ent->ts1);
+
+ /* ring doorbell after the descriptor is valid */
+ wmb();
+ iowrite32be(1 << ent->idx, &dev->iseg->cmd_dbell);
+ mlx5_core_dbg(dev, "write 0x%x to command doorbell\n", 1 << ent->idx);
+ mmiowb();
+ if (cmd->mode == CMD_MODE_POLLING) {
+ poll_timeout(ent);
+ /* make sure we read the descriptor after ownership is SW */
+ rmb();
+ mlx5_cmd_comp_handler(dev, 1UL << ent->idx);
+ }
+}
+
+static const char *deliv_status_to_str(u8 status)
+{
+ switch (status) {
+ case MLX5_CMD_DELIVERY_STAT_OK:
+ return "no errors";
+ case MLX5_CMD_DELIVERY_STAT_SIGNAT_ERR:
+ return "signature error";
+ case MLX5_CMD_DELIVERY_STAT_TOK_ERR:
+ return "token error";
+ case MLX5_CMD_DELIVERY_STAT_BAD_BLK_NUM_ERR:
+ return "bad block number";
+ case MLX5_CMD_DELIVERY_STAT_OUT_PTR_ALIGN_ERR:
+ return "output pointer not aligned to block size";
+ case MLX5_CMD_DELIVERY_STAT_IN_PTR_ALIGN_ERR:
+ return "input pointer not aligned to block size";
+ case MLX5_CMD_DELIVERY_STAT_FW_ERR:
+ return "firmware internal error";
+ case MLX5_CMD_DELIVERY_STAT_IN_LENGTH_ERR:
+ return "command input length error";
+ case MLX5_CMD_DELIVERY_STAT_OUT_LENGTH_ERR:
+ return "command ouput length error";
+ case MLX5_CMD_DELIVERY_STAT_RES_FLD_NOT_CLR_ERR:
+ return "reserved fields not cleared";
+ case MLX5_CMD_DELIVERY_STAT_CMD_DESCR_ERR:
+ return "bad command descriptor type";
+ default:
+ return "unknown status code";
+ }
+}
+
+static u16 msg_to_opcode(struct mlx5_cmd_msg *in)
+{
+ struct mlx5_inbox_hdr *hdr = (struct mlx5_inbox_hdr *)(in->first.data);
+
+ return be16_to_cpu(hdr->opcode);
+}
+
+static int wait_func(struct mlx5_core_dev *dev, struct mlx5_cmd_work_ent *ent)
+{
+ unsigned long timeout = msecs_to_jiffies(MLX5_CMD_TIMEOUT_MSEC);
+ struct mlx5_cmd *cmd = &dev->cmd;
+ int err;
+
+ if (cmd->mode == CMD_MODE_POLLING) {
+ wait_for_completion(&ent->done);
+ err = ent->ret;
+ } else {
+ if (!wait_for_completion_timeout(&ent->done, timeout))
+ err = -ETIMEDOUT;
+ else
+ err = 0;
+ }
+ if (err == -ETIMEDOUT) {
+ mlx5_core_warn(dev, "%s(0x%x) timeout. Will cause a leak of a command resource\n",
+ mlx5_command_str(msg_to_opcode(ent->in)),
+ msg_to_opcode(ent->in));
+ }
+ mlx5_core_dbg(dev, "err %d, delivery status %s(%d)\n", err,
+ deliv_status_to_str(ent->status), ent->status);
+
+ return err;
+}
+
+/* Notes:
+ * 1. Callback functions may not sleep
+ * 2. page queue commands do not support asynchrous completion
+ */
+static int mlx5_cmd_invoke(struct mlx5_core_dev *dev, struct mlx5_cmd_msg *in,
+ struct mlx5_cmd_msg *out, mlx5_cmd_cbk_t callback,
+ void *context, int page_queue, u8 *status)
+{
+ struct mlx5_cmd *cmd = &dev->cmd;
+ struct mlx5_cmd_work_ent *ent;
+ ktime_t t1, t2, delta;
+ struct mlx5_cmd_stats *stats;
+ int err = 0;
+ s64 ds;
+ u16 op;
+
+ if (callback && page_queue)
+ return -EINVAL;
+
+ ent = alloc_cmd(cmd, in, out, callback, context, page_queue);
+ if (IS_ERR(ent))
+ return PTR_ERR(ent);
+
+ if (!callback)
+ init_completion(&ent->done);
+
+ INIT_WORK(&ent->work, cmd_work_handler);
+ if (page_queue) {
+ cmd_work_handler(&ent->work);
+ } else if (!queue_work(cmd->wq, &ent->work)) {
+ mlx5_core_warn(dev, "failed to queue work\n");
+ err = -ENOMEM;
+ goto out_free;
+ }
+
+ if (!callback) {
+ err = wait_func(dev, ent);
+ if (err == -ETIMEDOUT)
+ goto out;
+
+ t1 = timespec_to_ktime(ent->ts1);
+ t2 = timespec_to_ktime(ent->ts2);
+ delta = ktime_sub(t2, t1);
+ ds = ktime_to_ns(delta);
+ op = be16_to_cpu(((struct mlx5_inbox_hdr *)in->first.data)->opcode);
+ if (op < ARRAY_SIZE(cmd->stats)) {
+ stats = &cmd->stats[op];
+ spin_lock(&stats->lock);
+ stats->sum += ds;
+ ++stats->n;
+ spin_unlock(&stats->lock);
+ }
+ mlx5_core_dbg_mask(dev, 1 << MLX5_CMD_TIME,
+ "fw exec time for %s is %lld nsec\n",
+ mlx5_command_str(op), ds);
+ *status = ent->status;
+ free_cmd(ent);
+ }
+
+ return err;
+
+out_free:
+ free_cmd(ent);
+out:
+ return err;
+}
+
+static ssize_t dbg_write(struct file *filp, const char __user *buf,
+ size_t count, loff_t *pos)
+{
+ struct mlx5_core_dev *dev = filp->private_data;
+ struct mlx5_cmd_debug *dbg = &dev->cmd.dbg;
+ char lbuf[3];
+ int err;
+
+ if (!dbg->in_msg || !dbg->out_msg)
+ return -ENOMEM;
+
+ if (copy_from_user(lbuf, buf, sizeof(lbuf)))
+ return -EFAULT;
+
+ lbuf[sizeof(lbuf) - 1] = 0;
+
+ if (strcmp(lbuf, "go"))
+ return -EINVAL;
+
+ err = mlx5_cmd_exec(dev, dbg->in_msg, dbg->inlen, dbg->out_msg, dbg->outlen);
+
+ return err ? err : count;
+}
+
+
+static const struct file_operations fops = {
+ .owner = THIS_MODULE,
+ .open = simple_open,
+ .write = dbg_write,
+};
+
+static int mlx5_copy_to_msg(struct mlx5_cmd_msg *to, void *from, int size)
+{
+ struct mlx5_cmd_prot_block *block;
+ struct mlx5_cmd_mailbox *next;
+ int copy;
+
+ if (!to || !from)
+ return -ENOMEM;
+
+ copy = min_t(int, size, sizeof(to->first.data));
+ memcpy(to->first.data, from, copy);
+ size -= copy;
+ from += copy;
+
+ next = to->next;
+ while (size) {
+ if (!next) {
+ /* this is a BUG */
+ return -ENOMEM;
+ }
+
+ copy = min_t(int, size, MLX5_CMD_DATA_BLOCK_SIZE);
+ block = next->buf;
+ memcpy(block->data, from, copy);
+ from += copy;
+ size -= copy;
+ next = next->next;
+ }
+
+ return 0;
+}
+
+static int mlx5_copy_from_msg(void *to, struct mlx5_cmd_msg *from, int size)
+{
+ struct mlx5_cmd_prot_block *block;
+ struct mlx5_cmd_mailbox *next;
+ int copy;
+
+ if (!to || !from)
+ return -ENOMEM;
+
+ copy = min_t(int, size, sizeof(from->first.data));
+ memcpy(to, from->first.data, copy);
+ size -= copy;
+ to += copy;
+
+ next = from->next;
+ while (size) {
+ if (!next) {
+ /* this is a BUG */
+ return -ENOMEM;
+ }
+
+ copy = min_t(int, size, MLX5_CMD_DATA_BLOCK_SIZE);
+ block = next->buf;
+ if (xor8_buf(block, sizeof(*block)) != 0xff)
+ return -EINVAL;
+
+ memcpy(to, block->data, copy);
+ to += copy;
+ size -= copy;
+ next = next->next;
+ }
+
+ return 0;
+}
+
+static struct mlx5_cmd_mailbox *alloc_cmd_box(struct mlx5_core_dev *dev,
+ gfp_t flags)
+{
+ struct mlx5_cmd_mailbox *mailbox;
+
+ mailbox = kmalloc(sizeof(*mailbox), flags);
+ if (!mailbox)
+ return ERR_PTR(-ENOMEM);
+
+ mailbox->buf = pci_pool_alloc(dev->cmd.pool, flags,
+ &mailbox->dma);
+ if (!mailbox->buf) {
+ mlx5_core_dbg(dev, "failed allocation\n");
+ kfree(mailbox);
+ return ERR_PTR(-ENOMEM);
+ }
+ memset(mailbox->buf, 0, sizeof(struct mlx5_cmd_prot_block));
+ mailbox->next = NULL;
+
+ return mailbox;
+}
+
+static void free_cmd_box(struct mlx5_core_dev *dev,
+ struct mlx5_cmd_mailbox *mailbox)
+{
+ pci_pool_free(dev->cmd.pool, mailbox->buf, mailbox->dma);
+ kfree(mailbox);
+}
+
+static struct mlx5_cmd_msg *mlx5_alloc_cmd_msg(struct mlx5_core_dev *dev,
+ gfp_t flags, int size)
+{
+ struct mlx5_cmd_mailbox *tmp, *head = NULL;
+ struct mlx5_cmd_prot_block *block;
+ struct mlx5_cmd_msg *msg;
+ int blen;
+ int err;
+ int n;
+ int i;
+
+ msg = kzalloc(sizeof(*msg), GFP_KERNEL);
+ if (!msg)
+ return ERR_PTR(-ENOMEM);
+
+ blen = size - min_t(int, sizeof(msg->first.data), size);
+ n = (blen + MLX5_CMD_DATA_BLOCK_SIZE - 1) / MLX5_CMD_DATA_BLOCK_SIZE;
+
+ for (i = 0; i < n; i++) {
+ tmp = alloc_cmd_box(dev, flags);
+ if (IS_ERR(tmp)) {
+ mlx5_core_warn(dev, "failed allocating block\n");
+ err = PTR_ERR(tmp);
+ goto err_alloc;
+ }
+
+ block = tmp->buf;
+ tmp->next = head;
+ block->next = cpu_to_be64(tmp->next ? tmp->next->dma : 0);
+ block->block_num = cpu_to_be32(n - i - 1);
+ head = tmp;
+ }
+ msg->next = head;
+ msg->len = size;
+ return msg;
+
+err_alloc:
+ while (head) {
+ tmp = head->next;
+ free_cmd_box(dev, head);
+ head = tmp;
+ }
+ kfree(msg);
+
+ return ERR_PTR(err);
+}
+
+static void mlx5_free_cmd_msg(struct mlx5_core_dev *dev,
+ struct mlx5_cmd_msg *msg)
+{
+ struct mlx5_cmd_mailbox *head = msg->next;
+ struct mlx5_cmd_mailbox *next;
+
+ while (head) {
+ next = head->next;
+ free_cmd_box(dev, head);
+ head = next;
+ }
+ kfree(msg);
+}
+
+static ssize_t data_write(struct file *filp, const char __user *buf,
+ size_t count, loff_t *pos)
+{
+ struct mlx5_core_dev *dev = filp->private_data;
+ struct mlx5_cmd_debug *dbg = &dev->cmd.dbg;
+ void *ptr;
+ int err;
+
+ if (*pos != 0)
+ return -EINVAL;
+
+ kfree(dbg->in_msg);
+ dbg->in_msg = NULL;
+ dbg->inlen = 0;
+
+ ptr = kzalloc(count, GFP_KERNEL);
+ if (!ptr)
+ return -ENOMEM;
+
+ if (copy_from_user(ptr, buf, count)) {
+ err = -EFAULT;
+ goto out;
+ }
+ dbg->in_msg = ptr;
+ dbg->inlen = count;
+
+ *pos = count;
+
+ return count;
+
+out:
+ kfree(ptr);
+ return err;
+}
+
+static ssize_t data_read(struct file *filp, char __user *buf, size_t count,
+ loff_t *pos)
+{
+ struct mlx5_core_dev *dev = filp->private_data;
+ struct mlx5_cmd_debug *dbg = &dev->cmd.dbg;
+ int copy;
+
+ if (*pos)
+ return 0;
+
+ if (!dbg->out_msg)
+ return -ENOMEM;
+
+ copy = min_t(int, count, dbg->outlen);
+ if (copy_to_user(buf, dbg->out_msg, copy))
+ return -EFAULT;
+
+ *pos += copy;
+
+ return copy;
+}
+
+static const struct file_operations dfops = {
+ .owner = THIS_MODULE,
+ .open = simple_open,
+ .write = data_write,
+ .read = data_read,
+};
+
+static ssize_t outlen_read(struct file *filp, char __user *buf, size_t count,
+ loff_t *pos)
+{
+ struct mlx5_core_dev *dev = filp->private_data;
+ struct mlx5_cmd_debug *dbg = &dev->cmd.dbg;
+ char outlen[8];
+ int err;
+
+ if (*pos)
+ return 0;
+
+ err = snprintf(outlen, sizeof(outlen), "%d", dbg->outlen);
+ if (err < 0)
+ return err;
+
+ if (copy_to_user(buf, &outlen, err))
+ return -EFAULT;
+
+ *pos += err;
+
+ return err;
+}
+
+static ssize_t outlen_write(struct file *filp, const char __user *buf,
+ size_t count, loff_t *pos)
+{
+ struct mlx5_core_dev *dev = filp->private_data;
+ struct mlx5_cmd_debug *dbg = &dev->cmd.dbg;
+ char outlen_str[8];
+ int outlen;
+ void *ptr;
+ int err;
+
+ if (*pos != 0 || count > 6)
+ return -EINVAL;
+
+ kfree(dbg->out_msg);
+ dbg->out_msg = NULL;
+ dbg->outlen = 0;
+
+ if (copy_from_user(outlen_str, buf, count))
+ return -EFAULT;
+
+ outlen_str[7] = 0;
+
+ err = sscanf(outlen_str, "%d", &outlen);
+ if (err < 0)
+ return err;
+
+ ptr = kzalloc(outlen, GFP_KERNEL);
+ if (!ptr)
+ return -ENOMEM;
+
+ dbg->out_msg = ptr;
+ dbg->outlen = outlen;
+
+ *pos = count;
+
+ return count;
+}
+
+static const struct file_operations olfops = {
+ .owner = THIS_MODULE,
+ .open = simple_open,
+ .write = outlen_write,
+ .read = outlen_read,
+};
+
+static void set_wqname(struct mlx5_core_dev *dev)
+{
+ struct mlx5_cmd *cmd = &dev->cmd;
+
+ snprintf(cmd->wq_name, sizeof(cmd->wq_name), "mlx5_cmd_%s",
+ dev_name(&dev->pdev->dev));
+}
+
+static void clean_debug_files(struct mlx5_core_dev *dev)
+{
+ struct mlx5_cmd_debug *dbg = &dev->cmd.dbg;
+
+ if (!mlx5_debugfs_root)
+ return;
+
+ mlx5_cmdif_debugfs_cleanup(dev);
+ debugfs_remove_recursive(dbg->dbg_root);
+}
+
+static int create_debugfs_files(struct mlx5_core_dev *dev)
+{
+ struct mlx5_cmd_debug *dbg = &dev->cmd.dbg;
+ int err = -ENOMEM;
+
+ if (!mlx5_debugfs_root)
+ return 0;
+
+ dbg->dbg_root = debugfs_create_dir("cmd", dev->priv.dbg_root);
+ if (!dbg->dbg_root)
+ return err;
+
+ dbg->dbg_in = debugfs_create_file("in", 0400, dbg->dbg_root,
+ dev, &dfops);
+ if (!dbg->dbg_in)
+ goto err_dbg;
+
+ dbg->dbg_out = debugfs_create_file("out", 0200, dbg->dbg_root,
+ dev, &dfops);
+ if (!dbg->dbg_out)
+ goto err_dbg;
+
+ dbg->dbg_outlen = debugfs_create_file("out_len", 0600, dbg->dbg_root,
+ dev, &olfops);
+ if (!dbg->dbg_outlen)
+ goto err_dbg;
+
+ dbg->dbg_status = debugfs_create_u8("status", 0600, dbg->dbg_root,
+ &dbg->status);
+ if (!dbg->dbg_status)
+ goto err_dbg;
+
+ dbg->dbg_run = debugfs_create_file("run", 0200, dbg->dbg_root, dev, &fops);
+ if (!dbg->dbg_run)
+ goto err_dbg;
+
+ mlx5_cmdif_debugfs_init(dev);
+
+ return 0;
+
+err_dbg:
+ clean_debug_files(dev);
+ return err;
+}
+
+void mlx5_cmd_use_events(struct mlx5_core_dev *dev)
+{
+ struct mlx5_cmd *cmd = &dev->cmd;
+ int i;
+
+ for (i = 0; i < cmd->max_reg_cmds; i++)
+ down(&cmd->sem);
+
+ down(&cmd->pages_sem);
+
+ flush_workqueue(cmd->wq);
+
+ cmd->mode = CMD_MODE_EVENTS;
+
+ up(&cmd->pages_sem);
+ for (i = 0; i < cmd->max_reg_cmds; i++)
+ up(&cmd->sem);
+}
+
+void mlx5_cmd_use_polling(struct mlx5_core_dev *dev)
+{
+ struct mlx5_cmd *cmd = &dev->cmd;
+ int i;
+
+ for (i = 0; i < cmd->max_reg_cmds; i++)
+ down(&cmd->sem);
+
+ down(&cmd->pages_sem);
+
+ flush_workqueue(cmd->wq);
+ cmd->mode = CMD_MODE_POLLING;
+
+ up(&cmd->pages_sem);
+ for (i = 0; i < cmd->max_reg_cmds; i++)
+ up(&cmd->sem);
+}
+
+void mlx5_cmd_comp_handler(struct mlx5_core_dev *dev, unsigned long vector)
+{
+ struct mlx5_cmd *cmd = &dev->cmd;
+ struct mlx5_cmd_work_ent *ent;
+ mlx5_cmd_cbk_t callback;
+ void *context;
+ int err;
+ int i;
+
+ for (i = 0; i < (1 << cmd->log_sz); i++) {
+ if (test_bit(i, &vector)) {
+ ent = cmd->ent_arr[i];
+ ktime_get_ts(&ent->ts2);
+ memcpy(ent->out->first.data, ent->lay->out, sizeof(ent->lay->out));
+ dump_command(dev, ent, 0);
+ if (!ent->ret) {
+ if (!cmd->checksum_disabled)
+ ent->ret = verify_signature(ent);
+ else
+ ent->ret = 0;
+ ent->status = ent->lay->status_own >> 1;
+ mlx5_core_dbg(dev, "command completed. ret 0x%x, delivery status %s(0x%x)\n",
+ ent->ret, deliv_status_to_str(ent->status), ent->status);
+ }
+ free_ent(cmd, ent->idx);
+ if (ent->callback) {
+ callback = ent->callback;
+ context = ent->context;
+ err = ent->ret;
+ free_cmd(ent);
+ callback(err, context);
+ } else {
+ complete(&ent->done);
+ }
+ if (ent->page_queue)
+ up(&cmd->pages_sem);
+ else
+ up(&cmd->sem);
+ }
+ }
+}
+EXPORT_SYMBOL(mlx5_cmd_comp_handler);
+
+static int status_to_err(u8 status)
+{
+ return status ? -1 : 0; /* TBD more meaningful codes */
+}
+
+static struct mlx5_cmd_msg *alloc_msg(struct mlx5_core_dev *dev, int in_size)
+{
+ struct mlx5_cmd_msg *msg = ERR_PTR(-ENOMEM);
+ struct mlx5_cmd *cmd = &dev->cmd;
+ struct cache_ent *ent = NULL;
+
+ if (in_size > MED_LIST_SIZE && in_size <= LONG_LIST_SIZE)
+ ent = &cmd->cache.large;
+ else if (in_size > 16 && in_size <= MED_LIST_SIZE)
+ ent = &cmd->cache.med;
+
+ if (ent) {
+ spin_lock(&ent->lock);
+ if (!list_empty(&ent->head)) {
+ msg = list_entry(ent->head.next, typeof(*msg), list);
+ /* For cached lists, we must explicitly state what is
+ * the real size
+ */
+ msg->len = in_size;
+ list_del(&msg->list);
+ }
+ spin_unlock(&ent->lock);
+ }
+
+ if (IS_ERR(msg))
+ msg = mlx5_alloc_cmd_msg(dev, GFP_KERNEL, in_size);
+
+ return msg;
+}
+
+static void free_msg(struct mlx5_core_dev *dev, struct mlx5_cmd_msg *msg)
+{
+ if (msg->cache) {
+ spin_lock(&msg->cache->lock);
+ list_add_tail(&msg->list, &msg->cache->head);
+ spin_unlock(&msg->cache->lock);
+ } else {
+ mlx5_free_cmd_msg(dev, msg);
+ }
+}
+
+static int is_manage_pages(struct mlx5_inbox_hdr *in)
+{
+ return be16_to_cpu(in->opcode) == MLX5_CMD_OP_MANAGE_PAGES;
+}
+
+int mlx5_cmd_exec(struct mlx5_core_dev *dev, void *in, int in_size, void *out,
+ int out_size)
+{
+ struct mlx5_cmd_msg *inb;
+ struct mlx5_cmd_msg *outb;
+ int pages_queue;
+ int err;
+ u8 status = 0;
+
+ pages_queue = is_manage_pages(in);
+
+ inb = alloc_msg(dev, in_size);
+ if (IS_ERR(inb)) {
+ err = PTR_ERR(inb);
+ return err;
+ }
+
+ err = mlx5_copy_to_msg(inb, in, in_size);
+ if (err) {
+ mlx5_core_warn(dev, "err %d\n", err);
+ goto out_in;
+ }
+
+ outb = mlx5_alloc_cmd_msg(dev, GFP_KERNEL, out_size);
+ if (IS_ERR(outb)) {
+ err = PTR_ERR(outb);
+ goto out_in;
+ }
+
+ err = mlx5_cmd_invoke(dev, inb, outb, NULL, NULL, pages_queue, &status);
+ if (err)
+ goto out_out;
+
+ mlx5_core_dbg(dev, "err %d, status %d\n", err, status);
+ if (status) {
+ err = status_to_err(status);
+ goto out_out;
+ }
+
+ err = mlx5_copy_from_msg(out, outb, out_size);
+
+out_out:
+ mlx5_free_cmd_msg(dev, outb);
+
+out_in:
+ free_msg(dev, inb);
+ return err;
+}
+EXPORT_SYMBOL(mlx5_cmd_exec);
+
+static void destroy_msg_cache(struct mlx5_core_dev *dev)
+{
+ struct mlx5_cmd *cmd = &dev->cmd;
+ struct mlx5_cmd_msg *msg;
+ struct mlx5_cmd_msg *n;
+
+ list_for_each_entry_safe(msg, n, &cmd->cache.large.head, list) {
+ list_del(&msg->list);
+ mlx5_free_cmd_msg(dev, msg);
+ }
+
+ list_for_each_entry_safe(msg, n, &cmd->cache.med.head, list) {
+ list_del(&msg->list);
+ mlx5_free_cmd_msg(dev, msg);
+ }
+}
+
+static int create_msg_cache(struct mlx5_core_dev *dev)
+{
+ struct mlx5_cmd *cmd = &dev->cmd;
+ struct mlx5_cmd_msg *msg;
+ int err;
+ int i;
+
+ spin_lock_init(&cmd->cache.large.lock);
+ INIT_LIST_HEAD(&cmd->cache.large.head);
+ spin_lock_init(&cmd->cache.med.lock);
+ INIT_LIST_HEAD(&cmd->cache.med.head);
+
+ for (i = 0; i < NUM_LONG_LISTS; i++) {
+ msg = mlx5_alloc_cmd_msg(dev, GFP_KERNEL, LONG_LIST_SIZE);
+ if (IS_ERR(msg)) {
+ err = PTR_ERR(msg);
+ goto ex_err;
+ }
+ msg->cache = &cmd->cache.large;
+ list_add_tail(&msg->list, &cmd->cache.large.head);
+ }
+
+ for (i = 0; i < NUM_MED_LISTS; i++) {
+ msg = mlx5_alloc_cmd_msg(dev, GFP_KERNEL, MED_LIST_SIZE);
+ if (IS_ERR(msg)) {
+ err = PTR_ERR(msg);
+ goto ex_err;
+ }
+ msg->cache = &cmd->cache.med;
+ list_add_tail(&msg->list, &cmd->cache.med.head);
+ }
+
+ return 0;
+
+ex_err:
+ destroy_msg_cache(dev);
+ return err;
+}
+
+int mlx5_cmd_init(struct mlx5_core_dev *dev)
+{
+ int size = sizeof(struct mlx5_cmd_prot_block);
+ int align = roundup_pow_of_two(size);
+ struct mlx5_cmd *cmd = &dev->cmd;
+ u32 cmd_h, cmd_l;
+ u16 cmd_if_rev;
+ int err;
+ int i;
+
+ cmd_if_rev = cmdif_rev(dev);
+ if (cmd_if_rev != CMD_IF_REV) {
+ dev_err(&dev->pdev->dev,
+ "Driver cmdif rev(%d) differs from firmware's(%d)\n",
+ CMD_IF_REV, cmd_if_rev);
+ return -EINVAL;
+ }
+
+ cmd->pool = pci_pool_create("mlx5_cmd", dev->pdev, size, align, 0);
+ if (!cmd->pool)
+ return -ENOMEM;
+
+ cmd->cmd_buf = (void *)__get_free_pages(GFP_ATOMIC, 0);
+ if (!cmd->cmd_buf) {
+ err = -ENOMEM;
+ goto err_free_pool;
+ }
+ cmd->dma = dma_map_single(&dev->pdev->dev, cmd->cmd_buf, PAGE_SIZE,
+ DMA_BIDIRECTIONAL);
+ if (dma_mapping_error(&dev->pdev->dev, cmd->dma)) {
+ err = -ENOMEM;
+ goto err_free;
+ }
+
+ cmd_l = ioread32be(&dev->iseg->cmdq_addr_l_sz) & 0xff;
+ cmd->log_sz = cmd_l >> 4 & 0xf;
+ cmd->log_stride = cmd_l & 0xf;
+ if (1 << cmd->log_sz > MLX5_MAX_COMMANDS) {
+ dev_err(&dev->pdev->dev, "firmware reports too many outstanding commands %d\n",
+ 1 << cmd->log_sz);
+ err = -EINVAL;
+ goto err_map;
+ }
+
+ if (cmd->log_sz + cmd->log_stride > PAGE_SHIFT) {
+ dev_err(&dev->pdev->dev, "command queue size overflow\n");
+ err = -EINVAL;
+ goto err_map;
+ }
+
+ cmd->max_reg_cmds = (1 << cmd->log_sz) - 1;
+ cmd->bitmask = (1 << cmd->max_reg_cmds) - 1;
+
+ cmd->cmdif_rev = ioread32be(&dev->iseg->cmdif_rev_fw_sub) >> 16;
+ if (cmd->cmdif_rev > CMD_IF_REV) {
+ dev_err(&dev->pdev->dev, "driver does not support command interface version. driver %d, firmware %d\n",
+ CMD_IF_REV, cmd->cmdif_rev);
+ err = -ENOTSUPP;
+ goto err_map;
+ }
+
+ spin_lock_init(&cmd->alloc_lock);
+ spin_lock_init(&cmd->token_lock);
+ for (i = 0; i < ARRAY_SIZE(cmd->stats); i++)
+ spin_lock_init(&cmd->stats[i].lock);
+
+ sema_init(&cmd->sem, cmd->max_reg_cmds);
+ sema_init(&cmd->pages_sem, 1);
+
+ cmd_h = (u32)((u64)(cmd->dma) >> 32);
+ cmd_l = (u32)(cmd->dma);
+ if (cmd_l & 0xfff) {
+ dev_err(&dev->pdev->dev, "invalid command queue address\n");
+ err = -ENOMEM;
+ goto err_map;
+ }
+
+ iowrite32be(cmd_h, &dev->iseg->cmdq_addr_h);
+ iowrite32be(cmd_l, &dev->iseg->cmdq_addr_l_sz);
+
+ /* Make sure firmware sees the complete address before we proceed */
+ wmb();
+
+ mlx5_core_dbg(dev, "descriptor at dma 0x%llx\n", (unsigned long long)(cmd->dma));
+
+ cmd->mode = CMD_MODE_POLLING;
+
+ err = create_msg_cache(dev);
+ if (err) {
+ dev_err(&dev->pdev->dev, "failed to create command cache\n");
+ goto err_map;
+ }
+
+ set_wqname(dev);
+ cmd->wq = create_singlethread_workqueue(cmd->wq_name);
+ if (!cmd->wq) {
+ dev_err(&dev->pdev->dev, "failed to create command workqueue\n");
+ err = -ENOMEM;
+ goto err_cache;
+ }
+
+ err = create_debugfs_files(dev);
+ if (err) {
+ err = -ENOMEM;
+ goto err_wq;
+ }
+
+ return 0;
+
+err_wq:
+ destroy_workqueue(cmd->wq);
+
+err_cache:
+ destroy_msg_cache(dev);
+
+err_map:
+ dma_unmap_single(&dev->pdev->dev, cmd->dma, PAGE_SIZE,
+ DMA_BIDIRECTIONAL);
+err_free:
+ free_pages((unsigned long)cmd->cmd_buf, 0);
+
+err_free_pool:
+ pci_pool_destroy(cmd->pool);
+
+ return err;
+}
+EXPORT_SYMBOL(mlx5_cmd_init);
+
+void mlx5_cmd_cleanup(struct mlx5_core_dev *dev)
+{
+ struct mlx5_cmd *cmd = &dev->cmd;
+
+ clean_debug_files(dev);
+ destroy_workqueue(cmd->wq);
+ destroy_msg_cache(dev);
+ dma_unmap_single(&dev->pdev->dev, cmd->dma, PAGE_SIZE,
+ DMA_BIDIRECTIONAL);
+ free_pages((unsigned long)cmd->cmd_buf, 0);
+ pci_pool_destroy(cmd->pool);
+}
+EXPORT_SYMBOL(mlx5_cmd_cleanup);
+
+static const char *cmd_status_str(u8 status)
+{
+ switch (status) {
+ case MLX5_CMD_STAT_OK:
+ return "OK";
+ case MLX5_CMD_STAT_INT_ERR:
+ return "internal error";
+ case MLX5_CMD_STAT_BAD_OP_ERR:
+ return "bad operation";
+ case MLX5_CMD_STAT_BAD_PARAM_ERR:
+ return "bad parameter";
+ case MLX5_CMD_STAT_BAD_SYS_STATE_ERR:
+ return "bad system state";
+ case MLX5_CMD_STAT_BAD_RES_ERR:
+ return "bad resource";
+ case MLX5_CMD_STAT_RES_BUSY:
+ return "resource busy";
+ case MLX5_CMD_STAT_LIM_ERR:
+ return "limits exceeded";
+ case MLX5_CMD_STAT_BAD_RES_STATE_ERR:
+ return "bad resource state";
+ case MLX5_CMD_STAT_IX_ERR:
+ return "bad index";
+ case MLX5_CMD_STAT_NO_RES_ERR:
+ return "no resources";
+ case MLX5_CMD_STAT_BAD_INP_LEN_ERR:
+ return "bad input length";
+ case MLX5_CMD_STAT_BAD_OUTP_LEN_ERR:
+ return "bad output length";
+ case MLX5_CMD_STAT_BAD_QP_STATE_ERR:
+ return "bad QP state";
+ case MLX5_CMD_STAT_BAD_PKT_ERR:
+ return "bad packet (discarded)";
+ case MLX5_CMD_STAT_BAD_SIZE_OUTS_CQES_ERR:
+ return "bad size too many outstanding CQEs";
+ default:
+ return "unknown status";
+ }
+}
+
+int mlx5_cmd_status_to_err(struct mlx5_outbox_hdr *hdr)
+{
+ if (!hdr->status)
+ return 0;
+
+ pr_warn("command failed, status %s(0x%x), syndrome 0x%x\n",
+ cmd_status_str(hdr->status), hdr->status,
+ be32_to_cpu(hdr->syndrome));
+
+ switch (hdr->status) {
+ case MLX5_CMD_STAT_OK: return 0;
+ case MLX5_CMD_STAT_INT_ERR: return -EIO;
+ case MLX5_CMD_STAT_BAD_OP_ERR: return -EINVAL;
+ case MLX5_CMD_STAT_BAD_PARAM_ERR: return -EINVAL;
+ case MLX5_CMD_STAT_BAD_SYS_STATE_ERR: return -EIO;
+ case MLX5_CMD_STAT_BAD_RES_ERR: return -EINVAL;
+ case MLX5_CMD_STAT_RES_BUSY: return -EBUSY;
+ case MLX5_CMD_STAT_LIM_ERR: return -EINVAL;
+ case MLX5_CMD_STAT_BAD_RES_STATE_ERR: return -EINVAL;
+ case MLX5_CMD_STAT_IX_ERR: return -EINVAL;
+ case MLX5_CMD_STAT_NO_RES_ERR: return -EAGAIN;
+ case MLX5_CMD_STAT_BAD_INP_LEN_ERR: return -EIO;
+ case MLX5_CMD_STAT_BAD_OUTP_LEN_ERR: return -EIO;
+ case MLX5_CMD_STAT_BAD_QP_STATE_ERR: return -EINVAL;
+ case MLX5_CMD_STAT_BAD_PKT_ERR: return -EINVAL;
+ case MLX5_CMD_STAT_BAD_SIZE_OUTS_CQES_ERR: return -EINVAL;
+ default: return -EIO;
+ }
+}
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/cq.c b/drivers/net/ethernet/mellanox/mlx5/core/cq.c
new file mode 100644
index 00000000000..c2d660be6f7
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx5/core/cq.c
@@ -0,0 +1,224 @@
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/hardirq.h>
+#include <linux/mlx5/driver.h>
+#include <linux/mlx5/cmd.h>
+#include <rdma/ib_verbs.h>
+#include <linux/mlx5/cq.h>
+#include "mlx5_core.h"
+
+void mlx5_cq_completion(struct mlx5_core_dev *dev, u32 cqn)
+{
+ struct mlx5_core_cq *cq;
+ struct mlx5_cq_table *table = &dev->priv.cq_table;
+
+ spin_lock(&table->lock);
+ cq = radix_tree_lookup(&table->tree, cqn);
+ if (likely(cq))
+ atomic_inc(&cq->refcount);
+ spin_unlock(&table->lock);
+
+ if (!cq) {
+ mlx5_core_warn(dev, "Completion event for bogus CQ 0x%x\n", cqn);
+ return;
+ }
+
+ ++cq->arm_sn;
+
+ cq->comp(cq);
+
+ if (atomic_dec_and_test(&cq->refcount))
+ complete(&cq->free);
+}
+
+void mlx5_cq_event(struct mlx5_core_dev *dev, u32 cqn, int event_type)
+{
+ struct mlx5_cq_table *table = &dev->priv.cq_table;
+ struct mlx5_core_cq *cq;
+
+ spin_lock(&table->lock);
+
+ cq = radix_tree_lookup(&table->tree, cqn);
+ if (cq)
+ atomic_inc(&cq->refcount);
+
+ spin_unlock(&table->lock);
+
+ if (!cq) {
+ mlx5_core_warn(dev, "Async event for bogus CQ 0x%x\n", cqn);
+ return;
+ }
+
+ cq->event(cq, event_type);
+
+ if (atomic_dec_and_test(&cq->refcount))
+ complete(&cq->free);
+}
+
+
+int mlx5_core_create_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
+ struct mlx5_create_cq_mbox_in *in, int inlen)
+{
+ int err;
+ struct mlx5_cq_table *table = &dev->priv.cq_table;
+ struct mlx5_create_cq_mbox_out out;
+ struct mlx5_destroy_cq_mbox_in din;
+ struct mlx5_destroy_cq_mbox_out dout;
+
+ in->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_CREATE_CQ);
+ memset(&out, 0, sizeof(out));
+ err = mlx5_cmd_exec(dev, in, inlen, &out, sizeof(out));
+ if (err)
+ return err;
+
+ if (out.hdr.status)
+ return mlx5_cmd_status_to_err(&out.hdr);
+
+ cq->cqn = be32_to_cpu(out.cqn) & 0xffffff;
+ cq->cons_index = 0;
+ cq->arm_sn = 0;
+ atomic_set(&cq->refcount, 1);
+ init_completion(&cq->free);
+
+ spin_lock_irq(&table->lock);
+ err = radix_tree_insert(&table->tree, cq->cqn, cq);
+ spin_unlock_irq(&table->lock);
+ if (err)
+ goto err_cmd;
+
+ cq->pid = current->pid;
+ err = mlx5_debug_cq_add(dev, cq);
+ if (err)
+ mlx5_core_dbg(dev, "failed adding CP 0x%x to debug file system\n",
+ cq->cqn);
+
+ return 0;
+
+err_cmd:
+ memset(&din, 0, sizeof(din));
+ memset(&dout, 0, sizeof(dout));
+ din.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DESTROY_CQ);
+ mlx5_cmd_exec(dev, &din, sizeof(din), &dout, sizeof(dout));
+ return err;
+}
+EXPORT_SYMBOL(mlx5_core_create_cq);
+
+int mlx5_core_destroy_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq)
+{
+ struct mlx5_cq_table *table = &dev->priv.cq_table;
+ struct mlx5_destroy_cq_mbox_in in;
+ struct mlx5_destroy_cq_mbox_out out;
+ struct mlx5_core_cq *tmp;
+ int err;
+
+ spin_lock_irq(&table->lock);
+ tmp = radix_tree_delete(&table->tree, cq->cqn);
+ spin_unlock_irq(&table->lock);
+ if (!tmp) {
+ mlx5_core_warn(dev, "cq 0x%x not found in tree\n", cq->cqn);
+ return -EINVAL;
+ }
+ if (tmp != cq) {
+ mlx5_core_warn(dev, "corruption on srqn 0x%x\n", cq->cqn);
+ return -EINVAL;
+ }
+
+ memset(&in, 0, sizeof(in));
+ memset(&out, 0, sizeof(out));
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DESTROY_CQ);
+ in.cqn = cpu_to_be32(cq->cqn);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
+ if (err)
+ return err;
+
+ if (out.hdr.status)
+ return mlx5_cmd_status_to_err(&out.hdr);
+
+ synchronize_irq(cq->irqn);
+
+ mlx5_debug_cq_remove(dev, cq);
+ if (atomic_dec_and_test(&cq->refcount))
+ complete(&cq->free);
+ wait_for_completion(&cq->free);
+
+ return 0;
+}
+EXPORT_SYMBOL(mlx5_core_destroy_cq);
+
+int mlx5_core_query_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
+ struct mlx5_query_cq_mbox_out *out)
+{
+ struct mlx5_query_cq_mbox_in in;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(out, 0, sizeof(*out));
+
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_CQ);
+ in.cqn = cpu_to_be32(cq->cqn);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), out, sizeof(*out));
+ if (err)
+ return err;
+
+ if (out->hdr.status)
+ return mlx5_cmd_status_to_err(&out->hdr);
+
+ return err;
+}
+EXPORT_SYMBOL(mlx5_core_query_cq);
+
+
+int mlx5_core_modify_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
+ int type, struct mlx5_cq_modify_params *params)
+{
+ return -ENOSYS;
+}
+
+int mlx5_init_cq_table(struct mlx5_core_dev *dev)
+{
+ struct mlx5_cq_table *table = &dev->priv.cq_table;
+ int err;
+
+ spin_lock_init(&table->lock);
+ INIT_RADIX_TREE(&table->tree, GFP_ATOMIC);
+ err = mlx5_cq_debugfs_init(dev);
+
+ return err;
+}
+
+void mlx5_cleanup_cq_table(struct mlx5_core_dev *dev)
+{
+ mlx5_cq_debugfs_cleanup(dev);
+}
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/debugfs.c b/drivers/net/ethernet/mellanox/mlx5/core/debugfs.c
new file mode 100644
index 00000000000..4273c06e2e9
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx5/core/debugfs.c
@@ -0,0 +1,583 @@
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/module.h>
+#include <linux/debugfs.h>
+#include <linux/mlx5/qp.h>
+#include <linux/mlx5/cq.h>
+#include <linux/mlx5/driver.h>
+#include "mlx5_core.h"
+
+enum {
+ QP_PID,
+ QP_STATE,
+ QP_XPORT,
+ QP_MTU,
+ QP_N_RECV,
+ QP_RECV_SZ,
+ QP_N_SEND,
+ QP_LOG_PG_SZ,
+ QP_RQPN,
+};
+
+static char *qp_fields[] = {
+ [QP_PID] = "pid",
+ [QP_STATE] = "state",
+ [QP_XPORT] = "transport",
+ [QP_MTU] = "mtu",
+ [QP_N_RECV] = "num_recv",
+ [QP_RECV_SZ] = "rcv_wqe_sz",
+ [QP_N_SEND] = "num_send",
+ [QP_LOG_PG_SZ] = "log2_page_sz",
+ [QP_RQPN] = "remote_qpn",
+};
+
+enum {
+ EQ_NUM_EQES,
+ EQ_INTR,
+ EQ_LOG_PG_SZ,
+};
+
+static char *eq_fields[] = {
+ [EQ_NUM_EQES] = "num_eqes",
+ [EQ_INTR] = "intr",
+ [EQ_LOG_PG_SZ] = "log_page_size",
+};
+
+enum {
+ CQ_PID,
+ CQ_NUM_CQES,
+ CQ_LOG_PG_SZ,
+};
+
+static char *cq_fields[] = {
+ [CQ_PID] = "pid",
+ [CQ_NUM_CQES] = "num_cqes",
+ [CQ_LOG_PG_SZ] = "log_page_size",
+};
+
+struct dentry *mlx5_debugfs_root;
+EXPORT_SYMBOL(mlx5_debugfs_root);
+
+void mlx5_register_debugfs(void)
+{
+ mlx5_debugfs_root = debugfs_create_dir("mlx5", NULL);
+ if (IS_ERR_OR_NULL(mlx5_debugfs_root))
+ mlx5_debugfs_root = NULL;
+}
+
+void mlx5_unregister_debugfs(void)
+{
+ debugfs_remove(mlx5_debugfs_root);
+}
+
+int mlx5_qp_debugfs_init(struct mlx5_core_dev *dev)
+{
+ if (!mlx5_debugfs_root)
+ return 0;
+
+ atomic_set(&dev->num_qps, 0);
+
+ dev->priv.qp_debugfs = debugfs_create_dir("QPs", dev->priv.dbg_root);
+ if (!dev->priv.qp_debugfs)
+ return -ENOMEM;
+
+ return 0;
+}
+
+void mlx5_qp_debugfs_cleanup(struct mlx5_core_dev *dev)
+{
+ if (!mlx5_debugfs_root)
+ return;
+
+ debugfs_remove_recursive(dev->priv.qp_debugfs);
+}
+
+int mlx5_eq_debugfs_init(struct mlx5_core_dev *dev)
+{
+ if (!mlx5_debugfs_root)
+ return 0;
+
+ dev->priv.eq_debugfs = debugfs_create_dir("EQs", dev->priv.dbg_root);
+ if (!dev->priv.eq_debugfs)
+ return -ENOMEM;
+
+ return 0;
+}
+
+void mlx5_eq_debugfs_cleanup(struct mlx5_core_dev *dev)
+{
+ if (!mlx5_debugfs_root)
+ return;
+
+ debugfs_remove_recursive(dev->priv.eq_debugfs);
+}
+
+static ssize_t average_read(struct file *filp, char __user *buf, size_t count,
+ loff_t *pos)
+{
+ struct mlx5_cmd_stats *stats;
+ u64 field = 0;
+ int ret;
+ char tbuf[22];
+
+ if (*pos)
+ return 0;
+
+ stats = filp->private_data;
+ spin_lock(&stats->lock);
+ if (stats->n)
+ field = stats->sum / stats->n;
+ spin_unlock(&stats->lock);
+ ret = snprintf(tbuf, sizeof(tbuf), "%llu\n", field);
+ if (ret > 0) {
+ if (copy_to_user(buf, tbuf, ret))
+ return -EFAULT;
+ }
+
+ *pos += ret;
+ return ret;
+}
+
+
+static ssize_t average_write(struct file *filp, const char __user *buf,
+ size_t count, loff_t *pos)
+{
+ struct mlx5_cmd_stats *stats;
+
+ stats = filp->private_data;
+ spin_lock(&stats->lock);
+ stats->sum = 0;
+ stats->n = 0;
+ spin_unlock(&stats->lock);
+
+ *pos += count;
+
+ return count;
+}
+
+static const struct file_operations stats_fops = {
+ .owner = THIS_MODULE,
+ .open = simple_open,
+ .read = average_read,
+ .write = average_write,
+};
+
+int mlx5_cmdif_debugfs_init(struct mlx5_core_dev *dev)
+{
+ struct mlx5_cmd_stats *stats;
+ struct dentry **cmd;
+ const char *namep;
+ int err;
+ int i;
+
+ if (!mlx5_debugfs_root)
+ return 0;
+
+ cmd = &dev->priv.cmdif_debugfs;
+ *cmd = debugfs_create_dir("commands", dev->priv.dbg_root);
+ if (!*cmd)
+ return -ENOMEM;
+
+ for (i = 0; i < ARRAY_SIZE(dev->cmd.stats); i++) {
+ stats = &dev->cmd.stats[i];
+ namep = mlx5_command_str(i);
+ if (strcmp(namep, "unknown command opcode")) {
+ stats->root = debugfs_create_dir(namep, *cmd);
+ if (!stats->root) {
+ mlx5_core_warn(dev, "failed adding command %d\n",
+ i);
+ err = -ENOMEM;
+ goto out;
+ }
+
+ stats->avg = debugfs_create_file("average", 0400,
+ stats->root, stats,
+ &stats_fops);
+ if (!stats->avg) {
+ mlx5_core_warn(dev, "failed creating debugfs file\n");
+ err = -ENOMEM;
+ goto out;
+ }
+
+ stats->count = debugfs_create_u64("n", 0400,
+ stats->root,
+ &stats->n);
+ if (!stats->count) {
+ mlx5_core_warn(dev, "failed creating debugfs file\n");
+ err = -ENOMEM;
+ goto out;
+ }
+ }
+ }
+
+ return 0;
+out:
+ debugfs_remove_recursive(dev->priv.cmdif_debugfs);
+ return err;
+}
+
+void mlx5_cmdif_debugfs_cleanup(struct mlx5_core_dev *dev)
+{
+ if (!mlx5_debugfs_root)
+ return;
+
+ debugfs_remove_recursive(dev->priv.cmdif_debugfs);
+}
+
+int mlx5_cq_debugfs_init(struct mlx5_core_dev *dev)
+{
+ if (!mlx5_debugfs_root)
+ return 0;
+
+ dev->priv.cq_debugfs = debugfs_create_dir("CQs", dev->priv.dbg_root);
+ if (!dev->priv.cq_debugfs)
+ return -ENOMEM;
+
+ return 0;
+}
+
+void mlx5_cq_debugfs_cleanup(struct mlx5_core_dev *dev)
+{
+ if (!mlx5_debugfs_root)
+ return;
+
+ debugfs_remove_recursive(dev->priv.cq_debugfs);
+}
+
+static u64 qp_read_field(struct mlx5_core_dev *dev, struct mlx5_core_qp *qp,
+ int index)
+{
+ struct mlx5_query_qp_mbox_out *out;
+ struct mlx5_qp_context *ctx;
+ u64 param = 0;
+ int err;
+ int no_sq;
+
+ out = kzalloc(sizeof(*out), GFP_KERNEL);
+ if (!out)
+ return param;
+
+ err = mlx5_core_qp_query(dev, qp, out, sizeof(*out));
+ if (err) {
+ mlx5_core_warn(dev, "failed to query qp\n");
+ goto out;
+ }
+
+ ctx = &out->ctx;
+ switch (index) {
+ case QP_PID:
+ param = qp->pid;
+ break;
+ case QP_STATE:
+ param = be32_to_cpu(ctx->flags) >> 28;
+ break;
+ case QP_XPORT:
+ param = (be32_to_cpu(ctx->flags) >> 16) & 0xff;
+ break;
+ case QP_MTU:
+ param = ctx->mtu_msgmax >> 5;
+ break;
+ case QP_N_RECV:
+ param = 1 << ((ctx->rq_size_stride >> 3) & 0xf);
+ break;
+ case QP_RECV_SZ:
+ param = 1 << ((ctx->rq_size_stride & 7) + 4);
+ break;
+ case QP_N_SEND:
+ no_sq = be16_to_cpu(ctx->sq_crq_size) >> 15;
+ if (!no_sq)
+ param = 1 << (be16_to_cpu(ctx->sq_crq_size) >> 11);
+ else
+ param = 0;
+ break;
+ case QP_LOG_PG_SZ:
+ param = (be32_to_cpu(ctx->log_pg_sz_remote_qpn) >> 24) & 0x1f;
+ param += 12;
+ break;
+ case QP_RQPN:
+ param = be32_to_cpu(ctx->log_pg_sz_remote_qpn) & 0xffffff;
+ break;
+ }
+
+out:
+ kfree(out);
+ return param;
+}
+
+static u64 eq_read_field(struct mlx5_core_dev *dev, struct mlx5_eq *eq,
+ int index)
+{
+ struct mlx5_query_eq_mbox_out *out;
+ struct mlx5_eq_context *ctx;
+ u64 param = 0;
+ int err;
+
+ out = kzalloc(sizeof(*out), GFP_KERNEL);
+ if (!out)
+ return param;
+
+ ctx = &out->ctx;
+
+ err = mlx5_core_eq_query(dev, eq, out, sizeof(*out));
+ if (err) {
+ mlx5_core_warn(dev, "failed to query eq\n");
+ goto out;
+ }
+
+ switch (index) {
+ case EQ_NUM_EQES:
+ param = 1 << ((be32_to_cpu(ctx->log_sz_usr_page) >> 24) & 0x1f);
+ break;
+ case EQ_INTR:
+ param = ctx->intr;
+ break;
+ case EQ_LOG_PG_SZ:
+ param = (ctx->log_page_size & 0x1f) + 12;
+ break;
+ }
+
+out:
+ kfree(out);
+ return param;
+}
+
+static u64 cq_read_field(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
+ int index)
+{
+ struct mlx5_query_cq_mbox_out *out;
+ struct mlx5_cq_context *ctx;
+ u64 param = 0;
+ int err;
+
+ out = kzalloc(sizeof(*out), GFP_KERNEL);
+ if (!out)
+ return param;
+
+ ctx = &out->ctx;
+
+ err = mlx5_core_query_cq(dev, cq, out);
+ if (err) {
+ mlx5_core_warn(dev, "failed to query cq\n");
+ goto out;
+ }
+
+ switch (index) {
+ case CQ_PID:
+ param = cq->pid;
+ break;
+ case CQ_NUM_CQES:
+ param = 1 << ((be32_to_cpu(ctx->log_sz_usr_page) >> 24) & 0x1f);
+ break;
+ case CQ_LOG_PG_SZ:
+ param = (ctx->log_pg_sz & 0x1f) + 12;
+ break;
+ }
+
+out:
+ kfree(out);
+ return param;
+}
+
+static ssize_t dbg_read(struct file *filp, char __user *buf, size_t count,
+ loff_t *pos)
+{
+ struct mlx5_field_desc *desc;
+ struct mlx5_rsc_debug *d;
+ char tbuf[18];
+ u64 field;
+ int ret;
+
+ if (*pos)
+ return 0;
+
+ desc = filp->private_data;
+ d = (void *)(desc - desc->i) - sizeof(*d);
+ switch (d->type) {
+ case MLX5_DBG_RSC_QP:
+ field = qp_read_field(d->dev, d->object, desc->i);
+ break;
+
+ case MLX5_DBG_RSC_EQ:
+ field = eq_read_field(d->dev, d->object, desc->i);
+ break;
+
+ case MLX5_DBG_RSC_CQ:
+ field = cq_read_field(d->dev, d->object, desc->i);
+ break;
+
+ default:
+ mlx5_core_warn(d->dev, "invalid resource type %d\n", d->type);
+ return -EINVAL;
+ }
+
+ ret = snprintf(tbuf, sizeof(tbuf), "0x%llx\n", field);
+ if (ret > 0) {
+ if (copy_to_user(buf, tbuf, ret))
+ return -EFAULT;
+ }
+
+ *pos += ret;
+ return ret;
+}
+
+static const struct file_operations fops = {
+ .owner = THIS_MODULE,
+ .open = simple_open,
+ .read = dbg_read,
+};
+
+static int add_res_tree(struct mlx5_core_dev *dev, enum dbg_rsc_type type,
+ struct dentry *root, struct mlx5_rsc_debug **dbg,
+ int rsn, char **field, int nfile, void *data)
+{
+ struct mlx5_rsc_debug *d;
+ char resn[32];
+ int err;
+ int i;
+
+ d = kzalloc(sizeof(*d) + nfile * sizeof(d->fields[0]), GFP_KERNEL);
+ if (!d)
+ return -ENOMEM;
+
+ d->dev = dev;
+ d->object = data;
+ d->type = type;
+ sprintf(resn, "0x%x", rsn);
+ d->root = debugfs_create_dir(resn, root);
+ if (!d->root) {
+ err = -ENOMEM;
+ goto out_free;
+ }
+
+ for (i = 0; i < nfile; i++) {
+ d->fields[i].i = i;
+ d->fields[i].dent = debugfs_create_file(field[i], 0400,
+ d->root, &d->fields[i],
+ &fops);
+ if (!d->fields[i].dent) {
+ err = -ENOMEM;
+ goto out_rem;
+ }
+ }
+ *dbg = d;
+
+ return 0;
+out_rem:
+ debugfs_remove_recursive(d->root);
+
+out_free:
+ kfree(d);
+ return err;
+}
+
+static void rem_res_tree(struct mlx5_rsc_debug *d)
+{
+ debugfs_remove_recursive(d->root);
+ kfree(d);
+}
+
+int mlx5_debug_qp_add(struct mlx5_core_dev *dev, struct mlx5_core_qp *qp)
+{
+ int err;
+
+ if (!mlx5_debugfs_root)
+ return 0;
+
+ err = add_res_tree(dev, MLX5_DBG_RSC_QP, dev->priv.qp_debugfs,
+ &qp->dbg, qp->qpn, qp_fields,
+ ARRAY_SIZE(qp_fields), qp);
+ if (err)
+ qp->dbg = NULL;
+
+ return err;
+}
+
+void mlx5_debug_qp_remove(struct mlx5_core_dev *dev, struct mlx5_core_qp *qp)
+{
+ if (!mlx5_debugfs_root)
+ return;
+
+ if (qp->dbg)
+ rem_res_tree(qp->dbg);
+}
+
+
+int mlx5_debug_eq_add(struct mlx5_core_dev *dev, struct mlx5_eq *eq)
+{
+ int err;
+
+ if (!mlx5_debugfs_root)
+ return 0;
+
+ err = add_res_tree(dev, MLX5_DBG_RSC_EQ, dev->priv.eq_debugfs,
+ &eq->dbg, eq->eqn, eq_fields,
+ ARRAY_SIZE(eq_fields), eq);
+ if (err)
+ eq->dbg = NULL;
+
+ return err;
+}
+
+void mlx5_debug_eq_remove(struct mlx5_core_dev *dev, struct mlx5_eq *eq)
+{
+ if (!mlx5_debugfs_root)
+ return;
+
+ if (eq->dbg)
+ rem_res_tree(eq->dbg);
+}
+
+int mlx5_debug_cq_add(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq)
+{
+ int err;
+
+ if (!mlx5_debugfs_root)
+ return 0;
+
+ err = add_res_tree(dev, MLX5_DBG_RSC_CQ, dev->priv.cq_debugfs,
+ &cq->dbg, cq->cqn, cq_fields,
+ ARRAY_SIZE(cq_fields), cq);
+ if (err)
+ cq->dbg = NULL;
+
+ return err;
+}
+
+void mlx5_debug_cq_remove(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq)
+{
+ if (!mlx5_debugfs_root)
+ return;
+
+ if (cq->dbg)
+ rem_res_tree(cq->dbg);
+}
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eq.c b/drivers/net/ethernet/mellanox/mlx5/core/eq.c
new file mode 100644
index 00000000000..c02cbcfd0fb
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eq.c
@@ -0,0 +1,521 @@
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/mlx5/driver.h>
+#include <linux/mlx5/cmd.h>
+#include "mlx5_core.h"
+
+enum {
+ MLX5_EQE_SIZE = sizeof(struct mlx5_eqe),
+ MLX5_EQE_OWNER_INIT_VAL = 0x1,
+};
+
+enum {
+ MLX5_EQ_STATE_ARMED = 0x9,
+ MLX5_EQ_STATE_FIRED = 0xa,
+ MLX5_EQ_STATE_ALWAYS_ARMED = 0xb,
+};
+
+enum {
+ MLX5_NUM_SPARE_EQE = 0x80,
+ MLX5_NUM_ASYNC_EQE = 0x100,
+ MLX5_NUM_CMD_EQE = 32,
+};
+
+enum {
+ MLX5_EQ_DOORBEL_OFFSET = 0x40,
+};
+
+#define MLX5_ASYNC_EVENT_MASK ((1ull << MLX5_EVENT_TYPE_PATH_MIG) | \
+ (1ull << MLX5_EVENT_TYPE_COMM_EST) | \
+ (1ull << MLX5_EVENT_TYPE_SQ_DRAINED) | \
+ (1ull << MLX5_EVENT_TYPE_CQ_ERROR) | \
+ (1ull << MLX5_EVENT_TYPE_WQ_CATAS_ERROR) | \
+ (1ull << MLX5_EVENT_TYPE_PATH_MIG_FAILED) | \
+ (1ull << MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR) | \
+ (1ull << MLX5_EVENT_TYPE_WQ_ACCESS_ERROR) | \
+ (1ull << MLX5_EVENT_TYPE_PORT_CHANGE) | \
+ (1ull << MLX5_EVENT_TYPE_SRQ_CATAS_ERROR) | \
+ (1ull << MLX5_EVENT_TYPE_SRQ_LAST_WQE) | \
+ (1ull << MLX5_EVENT_TYPE_SRQ_RQ_LIMIT))
+
+struct map_eq_in {
+ u64 mask;
+ u32 reserved;
+ u32 unmap_eqn;
+};
+
+struct cre_des_eq {
+ u8 reserved[15];
+ u8 eqn;
+};
+
+static int mlx5_cmd_destroy_eq(struct mlx5_core_dev *dev, u8 eqn)
+{
+ struct mlx5_destroy_eq_mbox_in in;
+ struct mlx5_destroy_eq_mbox_out out;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(&out, 0, sizeof(out));
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DESTROY_EQ);
+ in.eqn = eqn;
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
+ if (!err)
+ goto ex;
+
+ if (out.hdr.status)
+ err = mlx5_cmd_status_to_err(&out.hdr);
+
+ex:
+ return err;
+}
+
+static struct mlx5_eqe *get_eqe(struct mlx5_eq *eq, u32 entry)
+{
+ return mlx5_buf_offset(&eq->buf, entry * MLX5_EQE_SIZE);
+}
+
+static struct mlx5_eqe *next_eqe_sw(struct mlx5_eq *eq)
+{
+ struct mlx5_eqe *eqe = get_eqe(eq, eq->cons_index & (eq->nent - 1));
+
+ return ((eqe->owner & 1) ^ !!(eq->cons_index & eq->nent)) ? NULL : eqe;
+}
+
+static const char *eqe_type_str(u8 type)
+{
+ switch (type) {
+ case MLX5_EVENT_TYPE_COMP:
+ return "MLX5_EVENT_TYPE_COMP";
+ case MLX5_EVENT_TYPE_PATH_MIG:
+ return "MLX5_EVENT_TYPE_PATH_MIG";
+ case MLX5_EVENT_TYPE_COMM_EST:
+ return "MLX5_EVENT_TYPE_COMM_EST";
+ case MLX5_EVENT_TYPE_SQ_DRAINED:
+ return "MLX5_EVENT_TYPE_SQ_DRAINED";
+ case MLX5_EVENT_TYPE_SRQ_LAST_WQE:
+ return "MLX5_EVENT_TYPE_SRQ_LAST_WQE";
+ case MLX5_EVENT_TYPE_SRQ_RQ_LIMIT:
+ return "MLX5_EVENT_TYPE_SRQ_RQ_LIMIT";
+ case MLX5_EVENT_TYPE_CQ_ERROR:
+ return "MLX5_EVENT_TYPE_CQ_ERROR";
+ case MLX5_EVENT_TYPE_WQ_CATAS_ERROR:
+ return "MLX5_EVENT_TYPE_WQ_CATAS_ERROR";
+ case MLX5_EVENT_TYPE_PATH_MIG_FAILED:
+ return "MLX5_EVENT_TYPE_PATH_MIG_FAILED";
+ case MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR:
+ return "MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR";
+ case MLX5_EVENT_TYPE_WQ_ACCESS_ERROR:
+ return "MLX5_EVENT_TYPE_WQ_ACCESS_ERROR";
+ case MLX5_EVENT_TYPE_SRQ_CATAS_ERROR:
+ return "MLX5_EVENT_TYPE_SRQ_CATAS_ERROR";
+ case MLX5_EVENT_TYPE_INTERNAL_ERROR:
+ return "MLX5_EVENT_TYPE_INTERNAL_ERROR";
+ case MLX5_EVENT_TYPE_PORT_CHANGE:
+ return "MLX5_EVENT_TYPE_PORT_CHANGE";
+ case MLX5_EVENT_TYPE_GPIO_EVENT:
+ return "MLX5_EVENT_TYPE_GPIO_EVENT";
+ case MLX5_EVENT_TYPE_REMOTE_CONFIG:
+ return "MLX5_EVENT_TYPE_REMOTE_CONFIG";
+ case MLX5_EVENT_TYPE_DB_BF_CONGESTION:
+ return "MLX5_EVENT_TYPE_DB_BF_CONGESTION";
+ case MLX5_EVENT_TYPE_STALL_EVENT:
+ return "MLX5_EVENT_TYPE_STALL_EVENT";
+ case MLX5_EVENT_TYPE_CMD:
+ return "MLX5_EVENT_TYPE_CMD";
+ case MLX5_EVENT_TYPE_PAGE_REQUEST:
+ return "MLX5_EVENT_TYPE_PAGE_REQUEST";
+ default:
+ return "Unrecognized event";
+ }
+}
+
+static enum mlx5_dev_event port_subtype_event(u8 subtype)
+{
+ switch (subtype) {
+ case MLX5_PORT_CHANGE_SUBTYPE_DOWN:
+ return MLX5_DEV_EVENT_PORT_DOWN;
+ case MLX5_PORT_CHANGE_SUBTYPE_ACTIVE:
+ return MLX5_DEV_EVENT_PORT_UP;
+ case MLX5_PORT_CHANGE_SUBTYPE_INITIALIZED:
+ return MLX5_DEV_EVENT_PORT_INITIALIZED;
+ case MLX5_PORT_CHANGE_SUBTYPE_LID:
+ return MLX5_DEV_EVENT_LID_CHANGE;
+ case MLX5_PORT_CHANGE_SUBTYPE_PKEY:
+ return MLX5_DEV_EVENT_PKEY_CHANGE;
+ case MLX5_PORT_CHANGE_SUBTYPE_GUID:
+ return MLX5_DEV_EVENT_GUID_CHANGE;
+ case MLX5_PORT_CHANGE_SUBTYPE_CLIENT_REREG:
+ return MLX5_DEV_EVENT_CLIENT_REREG;
+ }
+ return -1;
+}
+
+static void eq_update_ci(struct mlx5_eq *eq, int arm)
+{
+ __be32 __iomem *addr = eq->doorbell + (arm ? 0 : 2);
+ u32 val = (eq->cons_index & 0xffffff) | (eq->eqn << 24);
+ __raw_writel((__force u32) cpu_to_be32(val), addr);
+ /* We still want ordering, just not swabbing, so add a barrier */
+ mb();
+}
+
+static int mlx5_eq_int(struct mlx5_core_dev *dev, struct mlx5_eq *eq)
+{
+ struct mlx5_eqe *eqe;
+ int eqes_found = 0;
+ int set_ci = 0;
+ u32 cqn;
+ u32 srqn;
+ u8 port;
+
+ while ((eqe = next_eqe_sw(eq))) {
+ /*
+ * Make sure we read EQ entry contents after we've
+ * checked the ownership bit.
+ */
+ rmb();
+
+ mlx5_core_dbg(eq->dev, "eqn %d, eqe type %s\n", eq->eqn, eqe_type_str(eqe->type));
+ switch (eqe->type) {
+ case MLX5_EVENT_TYPE_COMP:
+ cqn = be32_to_cpu(eqe->data.comp.cqn) & 0xffffff;
+ mlx5_cq_completion(dev, cqn);
+ break;
+
+ case MLX5_EVENT_TYPE_PATH_MIG:
+ case MLX5_EVENT_TYPE_COMM_EST:
+ case MLX5_EVENT_TYPE_SQ_DRAINED:
+ case MLX5_EVENT_TYPE_SRQ_LAST_WQE:
+ case MLX5_EVENT_TYPE_WQ_CATAS_ERROR:
+ case MLX5_EVENT_TYPE_PATH_MIG_FAILED:
+ case MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR:
+ case MLX5_EVENT_TYPE_WQ_ACCESS_ERROR:
+ mlx5_core_dbg(dev, "event %s(%d) arrived\n",
+ eqe_type_str(eqe->type), eqe->type);
+ mlx5_qp_event(dev, be32_to_cpu(eqe->data.qp_srq.qp_srq_n) & 0xffffff,
+ eqe->type);
+ break;
+
+ case MLX5_EVENT_TYPE_SRQ_RQ_LIMIT:
+ case MLX5_EVENT_TYPE_SRQ_CATAS_ERROR:
+ srqn = be32_to_cpu(eqe->data.qp_srq.qp_srq_n) & 0xffffff;
+ mlx5_core_dbg(dev, "SRQ event %s(%d): srqn 0x%x\n",
+ eqe_type_str(eqe->type), eqe->type, srqn);
+ mlx5_srq_event(dev, srqn, eqe->type);
+ break;
+
+ case MLX5_EVENT_TYPE_CMD:
+ mlx5_cmd_comp_handler(dev, be32_to_cpu(eqe->data.cmd.vector));
+ break;
+
+ case MLX5_EVENT_TYPE_PORT_CHANGE:
+ port = (eqe->data.port.port >> 4) & 0xf;
+ switch (eqe->sub_type) {
+ case MLX5_PORT_CHANGE_SUBTYPE_DOWN:
+ case MLX5_PORT_CHANGE_SUBTYPE_ACTIVE:
+ case MLX5_PORT_CHANGE_SUBTYPE_LID:
+ case MLX5_PORT_CHANGE_SUBTYPE_PKEY:
+ case MLX5_PORT_CHANGE_SUBTYPE_GUID:
+ case MLX5_PORT_CHANGE_SUBTYPE_CLIENT_REREG:
+ case MLX5_PORT_CHANGE_SUBTYPE_INITIALIZED:
+ dev->event(dev, port_subtype_event(eqe->sub_type), &port);
+ break;
+ default:
+ mlx5_core_warn(dev, "Port event with unrecognized subtype: port %d, sub_type %d\n",
+ port, eqe->sub_type);
+ }
+ break;
+ case MLX5_EVENT_TYPE_CQ_ERROR:
+ cqn = be32_to_cpu(eqe->data.cq_err.cqn) & 0xffffff;
+ mlx5_core_warn(dev, "CQ error on CQN 0x%x, syndrom 0x%x\n",
+ cqn, eqe->data.cq_err.syndrome);
+ mlx5_cq_event(dev, cqn, eqe->type);
+ break;
+
+ case MLX5_EVENT_TYPE_PAGE_REQUEST:
+ {
+ u16 func_id = be16_to_cpu(eqe->data.req_pages.func_id);
+ s16 npages = be16_to_cpu(eqe->data.req_pages.num_pages);
+
+ mlx5_core_dbg(dev, "page request for func 0x%x, napges %d\n", func_id, npages);
+ mlx5_core_req_pages_handler(dev, func_id, npages);
+ }
+ break;
+
+
+ default:
+ mlx5_core_warn(dev, "Unhandled event 0x%x on EQ 0x%x\n", eqe->type, eq->eqn);
+ break;
+ }
+
+ ++eq->cons_index;
+ eqes_found = 1;
+ ++set_ci;
+
+ /* The HCA will think the queue has overflowed if we
+ * don't tell it we've been processing events. We
+ * create our EQs with MLX5_NUM_SPARE_EQE extra
+ * entries, so we must update our consumer index at
+ * least that often.
+ */
+ if (unlikely(set_ci >= MLX5_NUM_SPARE_EQE)) {
+ eq_update_ci(eq, 0);
+ set_ci = 0;
+ }
+ }
+
+ eq_update_ci(eq, 1);
+
+ return eqes_found;
+}
+
+static irqreturn_t mlx5_msix_handler(int irq, void *eq_ptr)
+{
+ struct mlx5_eq *eq = eq_ptr;
+ struct mlx5_core_dev *dev = eq->dev;
+
+ mlx5_eq_int(dev, eq);
+
+ /* MSI-X vectors always belong to us */
+ return IRQ_HANDLED;
+}
+
+static void init_eq_buf(struct mlx5_eq *eq)
+{
+ struct mlx5_eqe *eqe;
+ int i;
+
+ for (i = 0; i < eq->nent; i++) {
+ eqe = get_eqe(eq, i);
+ eqe->owner = MLX5_EQE_OWNER_INIT_VAL;
+ }
+}
+
+int mlx5_create_map_eq(struct mlx5_core_dev *dev, struct mlx5_eq *eq, u8 vecidx,
+ int nent, u64 mask, const char *name, struct mlx5_uar *uar)
+{
+ struct mlx5_eq_table *table = &dev->priv.eq_table;
+ struct mlx5_create_eq_mbox_in *in;
+ struct mlx5_create_eq_mbox_out out;
+ int err;
+ int inlen;
+
+ eq->nent = roundup_pow_of_two(nent + MLX5_NUM_SPARE_EQE);
+ err = mlx5_buf_alloc(dev, eq->nent * MLX5_EQE_SIZE, 2 * PAGE_SIZE,
+ &eq->buf);
+ if (err)
+ return err;
+
+ init_eq_buf(eq);
+
+ inlen = sizeof(*in) + sizeof(in->pas[0]) * eq->buf.npages;
+ in = mlx5_vzalloc(inlen);
+ if (!in) {
+ err = -ENOMEM;
+ goto err_buf;
+ }
+ memset(&out, 0, sizeof(out));
+
+ mlx5_fill_page_array(&eq->buf, in->pas);
+
+ in->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_CREATE_EQ);
+ in->ctx.log_sz_usr_page = cpu_to_be32(ilog2(eq->nent) << 24 | uar->index);
+ in->ctx.intr = vecidx;
+ in->ctx.log_page_size = PAGE_SHIFT - 12;
+ in->events_mask = cpu_to_be64(mask);
+
+ err = mlx5_cmd_exec(dev, in, inlen, &out, sizeof(out));
+ if (err)
+ goto err_in;
+
+ if (out.hdr.status) {
+ err = mlx5_cmd_status_to_err(&out.hdr);
+ goto err_in;
+ }
+
+ eq->eqn = out.eq_number;
+ err = request_irq(table->msix_arr[vecidx].vector, mlx5_msix_handler, 0,
+ name, eq);
+ if (err)
+ goto err_eq;
+
+ eq->irqn = vecidx;
+ eq->dev = dev;
+ eq->doorbell = uar->map + MLX5_EQ_DOORBEL_OFFSET;
+
+ err = mlx5_debug_eq_add(dev, eq);
+ if (err)
+ goto err_irq;
+
+ /* EQs are created in ARMED state
+ */
+ eq_update_ci(eq, 1);
+
+ mlx5_vfree(in);
+ return 0;
+
+err_irq:
+ free_irq(table->msix_arr[vecidx].vector, eq);
+
+err_eq:
+ mlx5_cmd_destroy_eq(dev, eq->eqn);
+
+err_in:
+ mlx5_vfree(in);
+
+err_buf:
+ mlx5_buf_free(dev, &eq->buf);
+ return err;
+}
+EXPORT_SYMBOL_GPL(mlx5_create_map_eq);
+
+int mlx5_destroy_unmap_eq(struct mlx5_core_dev *dev, struct mlx5_eq *eq)
+{
+ struct mlx5_eq_table *table = &dev->priv.eq_table;
+ int err;
+
+ mlx5_debug_eq_remove(dev, eq);
+ free_irq(table->msix_arr[eq->irqn].vector, eq);
+ err = mlx5_cmd_destroy_eq(dev, eq->eqn);
+ if (err)
+ mlx5_core_warn(dev, "failed to destroy a previously created eq: eqn %d\n",
+ eq->eqn);
+ mlx5_buf_free(dev, &eq->buf);
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(mlx5_destroy_unmap_eq);
+
+int mlx5_eq_init(struct mlx5_core_dev *dev)
+{
+ int err;
+
+ spin_lock_init(&dev->priv.eq_table.lock);
+
+ err = mlx5_eq_debugfs_init(dev);
+
+ return err;
+}
+
+
+void mlx5_eq_cleanup(struct mlx5_core_dev *dev)
+{
+ mlx5_eq_debugfs_cleanup(dev);
+}
+
+int mlx5_start_eqs(struct mlx5_core_dev *dev)
+{
+ struct mlx5_eq_table *table = &dev->priv.eq_table;
+ int err;
+
+ err = mlx5_create_map_eq(dev, &table->cmd_eq, MLX5_EQ_VEC_CMD,
+ MLX5_NUM_CMD_EQE, 1ull << MLX5_EVENT_TYPE_CMD,
+ "mlx5_cmd_eq", &dev->priv.uuari.uars[0]);
+ if (err) {
+ mlx5_core_warn(dev, "failed to create cmd EQ %d\n", err);
+ return err;
+ }
+
+ mlx5_cmd_use_events(dev);
+
+ err = mlx5_create_map_eq(dev, &table->async_eq, MLX5_EQ_VEC_ASYNC,
+ MLX5_NUM_ASYNC_EQE, MLX5_ASYNC_EVENT_MASK,
+ "mlx5_async_eq", &dev->priv.uuari.uars[0]);
+ if (err) {
+ mlx5_core_warn(dev, "failed to create async EQ %d\n", err);
+ goto err1;
+ }
+
+ err = mlx5_create_map_eq(dev, &table->pages_eq,
+ MLX5_EQ_VEC_PAGES,
+ dev->caps.max_vf + 1,
+ 1 << MLX5_EVENT_TYPE_PAGE_REQUEST, "mlx5_pages_eq",
+ &dev->priv.uuari.uars[0]);
+ if (err) {
+ mlx5_core_warn(dev, "failed to create pages EQ %d\n", err);
+ goto err2;
+ }
+
+ return err;
+
+err2:
+ mlx5_destroy_unmap_eq(dev, &table->async_eq);
+
+err1:
+ mlx5_cmd_use_polling(dev);
+ mlx5_destroy_unmap_eq(dev, &table->cmd_eq);
+ return err;
+}
+
+int mlx5_stop_eqs(struct mlx5_core_dev *dev)
+{
+ struct mlx5_eq_table *table = &dev->priv.eq_table;
+ int err;
+
+ err = mlx5_destroy_unmap_eq(dev, &table->pages_eq);
+ if (err)
+ return err;
+
+ mlx5_destroy_unmap_eq(dev, &table->async_eq);
+ mlx5_cmd_use_polling(dev);
+
+ err = mlx5_destroy_unmap_eq(dev, &table->cmd_eq);
+ if (err)
+ mlx5_cmd_use_events(dev);
+
+ return err;
+}
+
+int mlx5_core_eq_query(struct mlx5_core_dev *dev, struct mlx5_eq *eq,
+ struct mlx5_query_eq_mbox_out *out, int outlen)
+{
+ struct mlx5_query_eq_mbox_in in;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(out, 0, outlen);
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_EQ);
+ in.eqn = eq->eqn;
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), out, outlen);
+ if (err)
+ return err;
+
+ if (out->hdr.status)
+ err = mlx5_cmd_status_to_err(&out->hdr);
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(mlx5_core_eq_query);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fw.c b/drivers/net/ethernet/mellanox/mlx5/core/fw.c
new file mode 100644
index 00000000000..72a5222447f
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fw.c
@@ -0,0 +1,185 @@
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/mlx5/driver.h>
+#include <linux/mlx5/cmd.h>
+#include <linux/module.h>
+#include "mlx5_core.h"
+
+int mlx5_cmd_query_adapter(struct mlx5_core_dev *dev)
+{
+ struct mlx5_cmd_query_adapter_mbox_out *out;
+ struct mlx5_cmd_query_adapter_mbox_in in;
+ int err;
+
+ out = kzalloc(sizeof(*out), GFP_KERNEL);
+ if (!out)
+ return -ENOMEM;
+
+ memset(&in, 0, sizeof(in));
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_ADAPTER);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), out, sizeof(*out));
+ if (err)
+ goto out_out;
+
+ if (out->hdr.status) {
+ err = mlx5_cmd_status_to_err(&out->hdr);
+ goto out_out;
+ }
+
+ memcpy(dev->board_id, out->vsd_psid, sizeof(out->vsd_psid));
+
+out_out:
+ kfree(out);
+
+ return err;
+}
+
+int mlx5_cmd_query_hca_cap(struct mlx5_core_dev *dev,
+ struct mlx5_caps *caps)
+{
+ struct mlx5_cmd_query_hca_cap_mbox_out *out;
+ struct mlx5_cmd_query_hca_cap_mbox_in in;
+ struct mlx5_query_special_ctxs_mbox_out ctx_out;
+ struct mlx5_query_special_ctxs_mbox_in ctx_in;
+ int err;
+ u16 t16;
+
+ out = kzalloc(sizeof(*out), GFP_KERNEL);
+ if (!out)
+ return -ENOMEM;
+
+ memset(&in, 0, sizeof(in));
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_HCA_CAP);
+ in.hdr.opmod = cpu_to_be16(0x1);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), out, sizeof(*out));
+ if (err)
+ goto out_out;
+
+ if (out->hdr.status) {
+ err = mlx5_cmd_status_to_err(&out->hdr);
+ goto out_out;
+ }
+
+
+ caps->log_max_eq = out->hca_cap.log_max_eq & 0xf;
+ caps->max_cqes = 1 << out->hca_cap.log_max_cq_sz;
+ caps->max_wqes = 1 << out->hca_cap.log_max_qp_sz;
+ caps->max_sq_desc_sz = be16_to_cpu(out->hca_cap.max_desc_sz_sq);
+ caps->max_rq_desc_sz = be16_to_cpu(out->hca_cap.max_desc_sz_rq);
+ caps->flags = be64_to_cpu(out->hca_cap.flags);
+ caps->stat_rate_support = be16_to_cpu(out->hca_cap.stat_rate_support);
+ caps->log_max_msg = out->hca_cap.log_max_msg & 0x1f;
+ caps->num_ports = out->hca_cap.num_ports & 0xf;
+ caps->log_max_cq = out->hca_cap.log_max_cq & 0x1f;
+ if (caps->num_ports > MLX5_MAX_PORTS) {
+ mlx5_core_err(dev, "device has %d ports while the driver supports max %d ports\n",
+ caps->num_ports, MLX5_MAX_PORTS);
+ err = -EINVAL;
+ goto out_out;
+ }
+ caps->log_max_qp = out->hca_cap.log_max_qp & 0x1f;
+ caps->log_max_mkey = out->hca_cap.log_max_mkey & 0x3f;
+ caps->log_max_pd = out->hca_cap.log_max_pd & 0x1f;
+ caps->log_max_srq = out->hca_cap.log_max_srqs & 0x1f;
+ caps->local_ca_ack_delay = out->hca_cap.local_ca_ack_delay & 0x1f;
+ caps->log_max_mcg = out->hca_cap.log_max_mcg;
+ caps->max_qp_mcg = be16_to_cpu(out->hca_cap.max_qp_mcg);
+ caps->max_ra_res_qp = 1 << (out->hca_cap.log_max_ra_res_qp & 0x3f);
+ caps->max_ra_req_qp = 1 << (out->hca_cap.log_max_ra_req_qp & 0x3f);
+ caps->max_srq_wqes = 1 << out->hca_cap.log_max_srq_sz;
+ t16 = be16_to_cpu(out->hca_cap.bf_log_bf_reg_size);
+ if (t16 & 0x8000) {
+ caps->bf_reg_size = 1 << (t16 & 0x1f);
+ caps->bf_regs_per_page = MLX5_BF_REGS_PER_PAGE;
+ } else {
+ caps->bf_reg_size = 0;
+ caps->bf_regs_per_page = 0;
+ }
+ caps->min_page_sz = ~(u32)((1 << out->hca_cap.log_pg_sz) - 1);
+
+ memset(&ctx_in, 0, sizeof(ctx_in));
+ memset(&ctx_out, 0, sizeof(ctx_out));
+ ctx_in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_SPECIAL_CONTEXTS);
+ err = mlx5_cmd_exec(dev, &ctx_in, sizeof(ctx_in),
+ &ctx_out, sizeof(ctx_out));
+ if (err)
+ goto out_out;
+
+ if (ctx_out.hdr.status)
+ err = mlx5_cmd_status_to_err(&ctx_out.hdr);
+
+ caps->reserved_lkey = be32_to_cpu(ctx_out.reserved_lkey);
+
+out_out:
+ kfree(out);
+
+ return err;
+}
+
+int mlx5_cmd_init_hca(struct mlx5_core_dev *dev)
+{
+ struct mlx5_cmd_init_hca_mbox_in in;
+ struct mlx5_cmd_init_hca_mbox_out out;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(&out, 0, sizeof(out));
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_INIT_HCA);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
+ if (err)
+ return err;
+
+ if (out.hdr.status)
+ err = mlx5_cmd_status_to_err(&out.hdr);
+
+ return err;
+}
+
+int mlx5_cmd_teardown_hca(struct mlx5_core_dev *dev)
+{
+ struct mlx5_cmd_teardown_hca_mbox_in in;
+ struct mlx5_cmd_teardown_hca_mbox_out out;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(&out, 0, sizeof(out));
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_TEARDOWN_HCA);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
+ if (err)
+ return err;
+
+ if (out.hdr.status)
+ err = mlx5_cmd_status_to_err(&out.hdr);
+
+ return err;
+}
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/health.c b/drivers/net/ethernet/mellanox/mlx5/core/health.c
new file mode 100644
index 00000000000..748f10a155c
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx5/core/health.c
@@ -0,0 +1,227 @@
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/random.h>
+#include <linux/vmalloc.h>
+#include <linux/mlx5/driver.h>
+#include <linux/mlx5/cmd.h>
+#include "mlx5_core.h"
+
+enum {
+ MLX5_HEALTH_POLL_INTERVAL = 2 * HZ,
+ MAX_MISSES = 3,
+};
+
+enum {
+ MLX5_HEALTH_SYNDR_FW_ERR = 0x1,
+ MLX5_HEALTH_SYNDR_IRISC_ERR = 0x7,
+ MLX5_HEALTH_SYNDR_CRC_ERR = 0x9,
+ MLX5_HEALTH_SYNDR_FETCH_PCI_ERR = 0xa,
+ MLX5_HEALTH_SYNDR_HW_FTL_ERR = 0xb,
+ MLX5_HEALTH_SYNDR_ASYNC_EQ_OVERRUN_ERR = 0xc,
+ MLX5_HEALTH_SYNDR_EQ_ERR = 0xd,
+ MLX5_HEALTH_SYNDR_FFSER_ERR = 0xf,
+};
+
+static DEFINE_SPINLOCK(health_lock);
+
+static LIST_HEAD(health_list);
+static struct work_struct health_work;
+
+static health_handler_t reg_handler;
+int mlx5_register_health_report_handler(health_handler_t handler)
+{
+ spin_lock_irq(&health_lock);
+ if (reg_handler) {
+ spin_unlock_irq(&health_lock);
+ return -EEXIST;
+ }
+ reg_handler = handler;
+ spin_unlock_irq(&health_lock);
+
+ return 0;
+}
+EXPORT_SYMBOL(mlx5_register_health_report_handler);
+
+void mlx5_unregister_health_report_handler(void)
+{
+ spin_lock_irq(&health_lock);
+ reg_handler = NULL;
+ spin_unlock_irq(&health_lock);
+}
+EXPORT_SYMBOL(mlx5_unregister_health_report_handler);
+
+static void health_care(struct work_struct *work)
+{
+ struct mlx5_core_health *health, *n;
+ struct mlx5_core_dev *dev;
+ struct mlx5_priv *priv;
+ LIST_HEAD(tlist);
+
+ spin_lock_irq(&health_lock);
+ list_splice_init(&health_list, &tlist);
+
+ spin_unlock_irq(&health_lock);
+
+ list_for_each_entry_safe(health, n, &tlist, list) {
+ priv = container_of(health, struct mlx5_priv, health);
+ dev = container_of(priv, struct mlx5_core_dev, priv);
+ mlx5_core_warn(dev, "handling bad device here\n");
+ spin_lock_irq(&health_lock);
+ if (reg_handler)
+ reg_handler(dev->pdev, health->health,
+ sizeof(health->health));
+
+ list_del_init(&health->list);
+ spin_unlock_irq(&health_lock);
+ }
+}
+
+static const char *hsynd_str(u8 synd)
+{
+ switch (synd) {
+ case MLX5_HEALTH_SYNDR_FW_ERR:
+ return "firmware internal error";
+ case MLX5_HEALTH_SYNDR_IRISC_ERR:
+ return "irisc not responding";
+ case MLX5_HEALTH_SYNDR_CRC_ERR:
+ return "firmware CRC error";
+ case MLX5_HEALTH_SYNDR_FETCH_PCI_ERR:
+ return "ICM fetch PCI error";
+ case MLX5_HEALTH_SYNDR_HW_FTL_ERR:
+ return "HW fatal error\n";
+ case MLX5_HEALTH_SYNDR_ASYNC_EQ_OVERRUN_ERR:
+ return "async EQ buffer overrun";
+ case MLX5_HEALTH_SYNDR_EQ_ERR:
+ return "EQ error";
+ case MLX5_HEALTH_SYNDR_FFSER_ERR:
+ return "FFSER error";
+ default:
+ return "unrecognized error";
+ }
+}
+
+static u16 read_be16(__be16 __iomem *p)
+{
+ return swab16(readl((__force u16 __iomem *) p));
+}
+
+static u32 read_be32(__be32 __iomem *p)
+{
+ return swab32(readl((__force u32 __iomem *) p));
+}
+
+static void print_health_info(struct mlx5_core_dev *dev)
+{
+ struct mlx5_core_health *health = &dev->priv.health;
+ struct health_buffer __iomem *h = health->health;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(h->assert_var); i++)
+ pr_info("assert_var[%d] 0x%08x\n", i, read_be32(h->assert_var + i));
+
+ pr_info("assert_exit_ptr 0x%08x\n", read_be32(&h->assert_exit_ptr));
+ pr_info("assert_callra 0x%08x\n", read_be32(&h->assert_callra));
+ pr_info("fw_ver 0x%08x\n", read_be32(&h->fw_ver));
+ pr_info("hw_id 0x%08x\n", read_be32(&h->hw_id));
+ pr_info("irisc_index %d\n", readb(&h->irisc_index));
+ pr_info("synd 0x%x: %s\n", readb(&h->synd), hsynd_str(readb(&h->synd)));
+ pr_info("ext_sync 0x%04x\n", read_be16(&h->ext_sync));
+}
+
+static void poll_health(unsigned long data)
+{
+ struct mlx5_core_dev *dev = (struct mlx5_core_dev *)data;
+ struct mlx5_core_health *health = &dev->priv.health;
+ unsigned long next;
+ u32 count;
+
+ count = ioread32be(health->health_counter);
+ if (count == health->prev)
+ ++health->miss_counter;
+ else
+ health->miss_counter = 0;
+
+ health->prev = count;
+ if (health->miss_counter == MAX_MISSES) {
+ mlx5_core_err(dev, "device's health compromised\n");
+ print_health_info(dev);
+ spin_lock_irq(&health_lock);
+ list_add_tail(&health->list, &health_list);
+ spin_unlock_irq(&health_lock);
+
+ queue_work(mlx5_core_wq, &health_work);
+ } else {
+ get_random_bytes(&next, sizeof(next));
+ next %= HZ;
+ next += jiffies + MLX5_HEALTH_POLL_INTERVAL;
+ mod_timer(&health->timer, next);
+ }
+}
+
+void mlx5_start_health_poll(struct mlx5_core_dev *dev)
+{
+ struct mlx5_core_health *health = &dev->priv.health;
+
+ INIT_LIST_HEAD(&health->list);
+ init_timer(&health->timer);
+ health->health = &dev->iseg->health;
+ health->health_counter = &dev->iseg->health_counter;
+
+ health->timer.data = (unsigned long)dev;
+ health->timer.function = poll_health;
+ health->timer.expires = round_jiffies(jiffies + MLX5_HEALTH_POLL_INTERVAL);
+ add_timer(&health->timer);
+}
+
+void mlx5_stop_health_poll(struct mlx5_core_dev *dev)
+{
+ struct mlx5_core_health *health = &dev->priv.health;
+
+ del_timer_sync(&health->timer);
+
+ spin_lock_irq(&health_lock);
+ if (!list_empty(&health->list))
+ list_del_init(&health->list);
+ spin_unlock_irq(&health_lock);
+}
+
+void mlx5_health_cleanup(void)
+{
+}
+
+void __init mlx5_health_init(void)
+{
+ INIT_WORK(&health_work, health_care);
+}
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/mad.c b/drivers/net/ethernet/mellanox/mlx5/core/mad.c
new file mode 100644
index 00000000000..18d6fd5dd90
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx5/core/mad.c
@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mlx5/driver.h>
+#include <linux/mlx5/cmd.h>
+#include "mlx5_core.h"
+
+int mlx5_core_mad_ifc(struct mlx5_core_dev *dev, void *inb, void *outb,
+ u16 opmod, int port)
+{
+ struct mlx5_mad_ifc_mbox_in *in = NULL;
+ struct mlx5_mad_ifc_mbox_out *out = NULL;
+ int err;
+
+ in = kzalloc(sizeof(*in), GFP_KERNEL);
+ if (!in)
+ return -ENOMEM;
+
+ out = kzalloc(sizeof(*out), GFP_KERNEL);
+ if (!out) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ in->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_MAD_IFC);
+ in->hdr.opmod = cpu_to_be16(opmod);
+ in->port = port;
+
+ memcpy(in->data, inb, sizeof(in->data));
+
+ err = mlx5_cmd_exec(dev, in, sizeof(*in), out, sizeof(*out));
+ if (err)
+ goto out;
+
+ if (out->hdr.status) {
+ err = mlx5_cmd_status_to_err(&out->hdr);
+ goto out;
+ }
+
+ memcpy(outb, out->data, sizeof(out->data));
+
+out:
+ kfree(out);
+ kfree(in);
+ return err;
+}
+EXPORT_SYMBOL_GPL(mlx5_core_mad_ifc);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c
new file mode 100644
index 00000000000..12242de2b0e
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c
@@ -0,0 +1,475 @@
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <asm-generic/kmap_types.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/pci.h>
+#include <linux/dma-mapping.h>
+#include <linux/slab.h>
+#include <linux/io-mapping.h>
+#include <linux/mlx5/driver.h>
+#include <linux/mlx5/cq.h>
+#include <linux/mlx5/qp.h>
+#include <linux/mlx5/srq.h>
+#include <linux/debugfs.h>
+#include "mlx5_core.h"
+
+#define DRIVER_NAME "mlx5_core"
+#define DRIVER_VERSION "1.0"
+#define DRIVER_RELDATE "June 2013"
+
+MODULE_AUTHOR("Eli Cohen <eli@mellanox.com>");
+MODULE_DESCRIPTION("Mellanox ConnectX-IB HCA core library");
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_VERSION(DRIVER_VERSION);
+
+int mlx5_core_debug_mask;
+module_param_named(debug_mask, mlx5_core_debug_mask, int, 0644);
+MODULE_PARM_DESC(debug_mask, "debug mask: 1 = dump cmd data, 2 = dump cmd exec time, 3 = both. Default=0");
+
+struct workqueue_struct *mlx5_core_wq;
+
+static int set_dma_caps(struct pci_dev *pdev)
+{
+ int err;
+
+ err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
+ if (err) {
+ dev_warn(&pdev->dev, "Warning: couldn't set 64-bit PCI DMA mask.\n");
+ err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+ if (err) {
+ dev_err(&pdev->dev, "Can't set PCI DMA mask, aborting.\n");
+ return err;
+ }
+ }
+
+ err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
+ if (err) {
+ dev_warn(&pdev->dev,
+ "Warning: couldn't set 64-bit consistent PCI DMA mask.\n");
+ err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
+ if (err) {
+ dev_err(&pdev->dev,
+ "Can't set consistent PCI DMA mask, aborting.\n");
+ return err;
+ }
+ }
+
+ dma_set_max_seg_size(&pdev->dev, 2u * 1024 * 1024 * 1024);
+ return err;
+}
+
+static int request_bar(struct pci_dev *pdev)
+{
+ int err = 0;
+
+ if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
+ dev_err(&pdev->dev, "Missing registers BAR, aborting.\n");
+ return -ENODEV;
+ }
+
+ err = pci_request_regions(pdev, DRIVER_NAME);
+ if (err)
+ dev_err(&pdev->dev, "Couldn't get PCI resources, aborting\n");
+
+ return err;
+}
+
+static void release_bar(struct pci_dev *pdev)
+{
+ pci_release_regions(pdev);
+}
+
+static int mlx5_enable_msix(struct mlx5_core_dev *dev)
+{
+ struct mlx5_eq_table *table = &dev->priv.eq_table;
+ int num_eqs = 1 << dev->caps.log_max_eq;
+ int nvec;
+ int err;
+ int i;
+
+ nvec = dev->caps.num_ports * num_online_cpus() + MLX5_EQ_VEC_COMP_BASE;
+ nvec = min_t(int, nvec, num_eqs);
+ if (nvec <= MLX5_EQ_VEC_COMP_BASE)
+ return -ENOMEM;
+
+ table->msix_arr = kzalloc(nvec * sizeof(*table->msix_arr), GFP_KERNEL);
+ if (!table->msix_arr)
+ return -ENOMEM;
+
+ for (i = 0; i < nvec; i++)
+ table->msix_arr[i].entry = i;
+
+retry:
+ table->num_comp_vectors = nvec - MLX5_EQ_VEC_COMP_BASE;
+ err = pci_enable_msix(dev->pdev, table->msix_arr, nvec);
+ if (err <= 0) {
+ return err;
+ } else if (err > 2) {
+ nvec = err;
+ goto retry;
+ }
+
+ mlx5_core_dbg(dev, "received %d MSI vectors out of %d requested\n", err, nvec);
+
+ return 0;
+}
+
+static void mlx5_disable_msix(struct mlx5_core_dev *dev)
+{
+ struct mlx5_eq_table *table = &dev->priv.eq_table;
+
+ pci_disable_msix(dev->pdev);
+ kfree(table->msix_arr);
+}
+
+struct mlx5_reg_host_endianess {
+ u8 he;
+ u8 rsvd[15];
+};
+
+static int handle_hca_cap(struct mlx5_core_dev *dev)
+{
+ struct mlx5_cmd_query_hca_cap_mbox_out *query_out = NULL;
+ struct mlx5_cmd_set_hca_cap_mbox_in *set_ctx = NULL;
+ struct mlx5_cmd_query_hca_cap_mbox_in query_ctx;
+ struct mlx5_cmd_set_hca_cap_mbox_out set_out;
+ struct mlx5_profile *prof = dev->profile;
+ u64 flags;
+ int csum = 1;
+ int err;
+
+ memset(&query_ctx, 0, sizeof(query_ctx));
+ query_out = kzalloc(sizeof(*query_out), GFP_KERNEL);
+ if (!query_out)
+ return -ENOMEM;
+
+ set_ctx = kzalloc(sizeof(*set_ctx), GFP_KERNEL);
+ if (!set_ctx) {
+ err = -ENOMEM;
+ goto query_ex;
+ }
+
+ query_ctx.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_HCA_CAP);
+ query_ctx.hdr.opmod = cpu_to_be16(0x1);
+ err = mlx5_cmd_exec(dev, &query_ctx, sizeof(query_ctx),
+ query_out, sizeof(*query_out));
+ if (err)
+ goto query_ex;
+
+ err = mlx5_cmd_status_to_err(&query_out->hdr);
+ if (err) {
+ mlx5_core_warn(dev, "query hca cap failed, %d\n", err);
+ goto query_ex;
+ }
+
+ memcpy(&set_ctx->hca_cap, &query_out->hca_cap,
+ sizeof(set_ctx->hca_cap));
+
+ if (prof->mask & MLX5_PROF_MASK_CMDIF_CSUM) {
+ csum = !!prof->cmdif_csum;
+ flags = be64_to_cpu(set_ctx->hca_cap.flags);
+ if (csum)
+ flags |= MLX5_DEV_CAP_FLAG_CMDIF_CSUM;
+ else
+ flags &= ~MLX5_DEV_CAP_FLAG_CMDIF_CSUM;
+
+ set_ctx->hca_cap.flags = cpu_to_be64(flags);
+ }
+
+ if (dev->profile->mask & MLX5_PROF_MASK_QP_SIZE)
+ set_ctx->hca_cap.log_max_qp = dev->profile->log_max_qp;
+
+ memset(&set_out, 0, sizeof(set_out));
+ set_ctx->hca_cap.log_uar_page_sz = cpu_to_be16(PAGE_SHIFT - 12);
+ set_ctx->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_SET_HCA_CAP);
+ err = mlx5_cmd_exec(dev, set_ctx, sizeof(*set_ctx),
+ &set_out, sizeof(set_out));
+ if (err) {
+ mlx5_core_warn(dev, "set hca cap failed, %d\n", err);
+ goto query_ex;
+ }
+
+ err = mlx5_cmd_status_to_err(&set_out.hdr);
+ if (err)
+ goto query_ex;
+
+ if (!csum)
+ dev->cmd.checksum_disabled = 1;
+
+query_ex:
+ kfree(query_out);
+ kfree(set_ctx);
+
+ return err;
+}
+
+static int set_hca_ctrl(struct mlx5_core_dev *dev)
+{
+ struct mlx5_reg_host_endianess he_in;
+ struct mlx5_reg_host_endianess he_out;
+ int err;
+
+ memset(&he_in, 0, sizeof(he_in));
+ he_in.he = MLX5_SET_HOST_ENDIANNESS;
+ err = mlx5_core_access_reg(dev, &he_in, sizeof(he_in),
+ &he_out, sizeof(he_out),
+ MLX5_REG_HOST_ENDIANNESS, 0, 1);
+ return err;
+}
+
+int mlx5_dev_init(struct mlx5_core_dev *dev, struct pci_dev *pdev)
+{
+ struct mlx5_priv *priv = &dev->priv;
+ int err;
+
+ dev->pdev = pdev;
+ pci_set_drvdata(dev->pdev, dev);
+ strncpy(priv->name, dev_name(&pdev->dev), MLX5_MAX_NAME_LEN);
+ priv->name[MLX5_MAX_NAME_LEN - 1] = 0;
+
+ mutex_init(&priv->pgdir_mutex);
+ INIT_LIST_HEAD(&priv->pgdir_list);
+ spin_lock_init(&priv->mkey_lock);
+
+ priv->dbg_root = debugfs_create_dir(dev_name(&pdev->dev), mlx5_debugfs_root);
+ if (!priv->dbg_root)
+ return -ENOMEM;
+
+ err = pci_enable_device(pdev);
+ if (err) {
+ dev_err(&pdev->dev, "Cannot enable PCI device, aborting.\n");
+ goto err_dbg;
+ }
+
+ err = request_bar(pdev);
+ if (err) {
+ dev_err(&pdev->dev, "error requesting BARs, aborting.\n");
+ goto err_disable;
+ }
+
+ pci_set_master(pdev);
+
+ err = set_dma_caps(pdev);
+ if (err) {
+ dev_err(&pdev->dev, "Failed setting DMA capabilities mask, aborting\n");
+ goto err_clr_master;
+ }
+
+ dev->iseg_base = pci_resource_start(dev->pdev, 0);
+ dev->iseg = ioremap(dev->iseg_base, sizeof(*dev->iseg));
+ if (!dev->iseg) {
+ err = -ENOMEM;
+ dev_err(&pdev->dev, "Failed mapping initialization segment, aborting\n");
+ goto err_clr_master;
+ }
+ dev_info(&pdev->dev, "firmware version: %d.%d.%d\n", fw_rev_maj(dev),
+ fw_rev_min(dev), fw_rev_sub(dev));
+
+ err = mlx5_cmd_init(dev);
+ if (err) {
+ dev_err(&pdev->dev, "Failed initializing command interface, aborting\n");
+ goto err_unmap;
+ }
+
+ mlx5_pagealloc_init(dev);
+ err = set_hca_ctrl(dev);
+ if (err) {
+ dev_err(&pdev->dev, "set_hca_ctrl failed\n");
+ goto err_pagealloc_cleanup;
+ }
+
+ err = handle_hca_cap(dev);
+ if (err) {
+ dev_err(&pdev->dev, "handle_hca_cap failed\n");
+ goto err_pagealloc_cleanup;
+ }
+
+ err = mlx5_satisfy_startup_pages(dev);
+ if (err) {
+ dev_err(&pdev->dev, "failed to allocate startup pages\n");
+ goto err_pagealloc_cleanup;
+ }
+
+ err = mlx5_pagealloc_start(dev);
+ if (err) {
+ dev_err(&pdev->dev, "mlx5_pagealloc_start failed\n");
+ goto err_reclaim_pages;
+ }
+
+ err = mlx5_cmd_init_hca(dev);
+ if (err) {
+ dev_err(&pdev->dev, "init hca failed\n");
+ goto err_pagealloc_stop;
+ }
+
+ mlx5_start_health_poll(dev);
+
+ err = mlx5_cmd_query_hca_cap(dev, &dev->caps);
+ if (err) {
+ dev_err(&pdev->dev, "query hca failed\n");
+ goto err_stop_poll;
+ }
+
+ err = mlx5_cmd_query_adapter(dev);
+ if (err) {
+ dev_err(&pdev->dev, "query adapter failed\n");
+ goto err_stop_poll;
+ }
+
+ err = mlx5_enable_msix(dev);
+ if (err) {
+ dev_err(&pdev->dev, "enable msix failed\n");
+ goto err_stop_poll;
+ }
+
+ err = mlx5_eq_init(dev);
+ if (err) {
+ dev_err(&pdev->dev, "failed to initialize eq\n");
+ goto disable_msix;
+ }
+
+ err = mlx5_alloc_uuars(dev, &priv->uuari);
+ if (err) {
+ dev_err(&pdev->dev, "Failed allocating uar, aborting\n");
+ goto err_eq_cleanup;
+ }
+
+ err = mlx5_start_eqs(dev);
+ if (err) {
+ dev_err(&pdev->dev, "Failed to start pages and async EQs\n");
+ goto err_free_uar;
+ }
+
+ MLX5_INIT_DOORBELL_LOCK(&priv->cq_uar_lock);
+
+ mlx5_init_cq_table(dev);
+ mlx5_init_qp_table(dev);
+ mlx5_init_srq_table(dev);
+
+ return 0;
+
+err_free_uar:
+ mlx5_free_uuars(dev, &priv->uuari);
+
+err_eq_cleanup:
+ mlx5_eq_cleanup(dev);
+
+disable_msix:
+ mlx5_disable_msix(dev);
+
+err_stop_poll:
+ mlx5_stop_health_poll(dev);
+ mlx5_cmd_teardown_hca(dev);
+
+err_pagealloc_stop:
+ mlx5_pagealloc_stop(dev);
+
+err_reclaim_pages:
+ mlx5_reclaim_startup_pages(dev);
+
+err_pagealloc_cleanup:
+ mlx5_pagealloc_cleanup(dev);
+ mlx5_cmd_cleanup(dev);
+
+err_unmap:
+ iounmap(dev->iseg);
+
+err_clr_master:
+ pci_clear_master(dev->pdev);
+ release_bar(dev->pdev);
+
+err_disable:
+ pci_disable_device(dev->pdev);
+
+err_dbg:
+ debugfs_remove(priv->dbg_root);
+ return err;
+}
+EXPORT_SYMBOL(mlx5_dev_init);
+
+void mlx5_dev_cleanup(struct mlx5_core_dev *dev)
+{
+ struct mlx5_priv *priv = &dev->priv;
+
+ mlx5_cleanup_srq_table(dev);
+ mlx5_cleanup_qp_table(dev);
+ mlx5_cleanup_cq_table(dev);
+ mlx5_stop_eqs(dev);
+ mlx5_free_uuars(dev, &priv->uuari);
+ mlx5_eq_cleanup(dev);
+ mlx5_disable_msix(dev);
+ mlx5_stop_health_poll(dev);
+ mlx5_cmd_teardown_hca(dev);
+ mlx5_pagealloc_stop(dev);
+ mlx5_reclaim_startup_pages(dev);
+ mlx5_pagealloc_cleanup(dev);
+ mlx5_cmd_cleanup(dev);
+ iounmap(dev->iseg);
+ pci_clear_master(dev->pdev);
+ release_bar(dev->pdev);
+ pci_disable_device(dev->pdev);
+ debugfs_remove(priv->dbg_root);
+}
+EXPORT_SYMBOL(mlx5_dev_cleanup);
+
+static int __init init(void)
+{
+ int err;
+
+ mlx5_register_debugfs();
+ mlx5_core_wq = create_singlethread_workqueue("mlx5_core_wq");
+ if (!mlx5_core_wq) {
+ err = -ENOMEM;
+ goto err_debug;
+ }
+ mlx5_health_init();
+
+ return 0;
+
+ mlx5_health_cleanup();
+err_debug:
+ mlx5_unregister_debugfs();
+ return err;
+}
+
+static void __exit cleanup(void)
+{
+ mlx5_health_cleanup();
+ destroy_workqueue(mlx5_core_wq);
+ mlx5_unregister_debugfs();
+}
+
+module_init(init);
+module_exit(cleanup);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/mcg.c b/drivers/net/ethernet/mellanox/mlx5/core/mcg.c
new file mode 100644
index 00000000000..44837640bd7
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx5/core/mcg.c
@@ -0,0 +1,106 @@
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mlx5/driver.h>
+#include <linux/mlx5/cmd.h>
+#include <rdma/ib_verbs.h>
+#include "mlx5_core.h"
+
+struct mlx5_attach_mcg_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ __be32 qpn;
+ __be32 rsvd;
+ u8 gid[16];
+};
+
+struct mlx5_attach_mcg_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ u8 rsvf[8];
+};
+
+struct mlx5_detach_mcg_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ __be32 qpn;
+ __be32 rsvd;
+ u8 gid[16];
+};
+
+struct mlx5_detach_mcg_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ u8 rsvf[8];
+};
+
+int mlx5_core_attach_mcg(struct mlx5_core_dev *dev, union ib_gid *mgid, u32 qpn)
+{
+ struct mlx5_attach_mcg_mbox_in in;
+ struct mlx5_attach_mcg_mbox_out out;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(&out, 0, sizeof(out));
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_ATTACH_TO_MCG);
+ memcpy(in.gid, mgid, sizeof(*mgid));
+ in.qpn = cpu_to_be32(qpn);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
+ if (err)
+ return err;
+
+ if (out.hdr.status)
+ err = mlx5_cmd_status_to_err(&out.hdr);
+
+ return err;
+}
+EXPORT_SYMBOL(mlx5_core_attach_mcg);
+
+int mlx5_core_detach_mcg(struct mlx5_core_dev *dev, union ib_gid *mgid, u32 qpn)
+{
+ struct mlx5_detach_mcg_mbox_in in;
+ struct mlx5_detach_mcg_mbox_out out;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(&out, 0, sizeof(out));
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DETACH_FROM_MCG);
+ memcpy(in.gid, mgid, sizeof(*mgid));
+ in.qpn = cpu_to_be32(qpn);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
+ if (err)
+ return err;
+
+ if (out.hdr.status)
+ err = mlx5_cmd_status_to_err(&out.hdr);
+
+ return err;
+}
+EXPORT_SYMBOL(mlx5_core_detach_mcg);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h b/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
new file mode 100644
index 00000000000..68b74e1ae1b
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef __MLX5_CORE_H__
+#define __MLX5_CORE_H__
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+
+extern int mlx5_core_debug_mask;
+
+#define mlx5_core_dbg(dev, format, arg...) \
+pr_debug("%s:%s:%d:(pid %d): " format, (dev)->priv.name, __func__, __LINE__, \
+ current->pid, ##arg)
+
+#define mlx5_core_dbg_mask(dev, mask, format, arg...) \
+do { \
+ if ((mask) & mlx5_core_debug_mask) \
+ pr_debug("%s:%s:%d:(pid %d): " format, (dev)->priv.name, \
+ __func__, __LINE__, current->pid, ##arg); \
+} while (0)
+
+#define mlx5_core_err(dev, format, arg...) \
+pr_err("%s:%s:%d:(pid %d): " format, (dev)->priv.name, __func__, __LINE__, \
+ current->pid, ##arg)
+
+#define mlx5_core_warn(dev, format, arg...) \
+pr_warn("%s:%s:%d:(pid %d): " format, (dev)->priv.name, __func__, __LINE__, \
+ current->pid, ##arg)
+
+enum {
+ MLX5_CMD_DATA, /* print command payload only */
+ MLX5_CMD_TIME, /* print command execution time */
+};
+
+
+int mlx5_cmd_query_hca_cap(struct mlx5_core_dev *dev,
+ struct mlx5_caps *caps);
+int mlx5_cmd_query_adapter(struct mlx5_core_dev *dev);
+int mlx5_cmd_init_hca(struct mlx5_core_dev *dev);
+int mlx5_cmd_teardown_hca(struct mlx5_core_dev *dev);
+
+#endif /* __MLX5_CORE_H__ */
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/mr.c b/drivers/net/ethernet/mellanox/mlx5/core/mr.c
new file mode 100644
index 00000000000..5b44e2e46da
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx5/core/mr.c
@@ -0,0 +1,136 @@
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mlx5/driver.h>
+#include <linux/mlx5/cmd.h>
+#include "mlx5_core.h"
+
+int mlx5_core_create_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
+ struct mlx5_create_mkey_mbox_in *in, int inlen)
+{
+ struct mlx5_create_mkey_mbox_out out;
+ int err;
+ u8 key;
+
+ memset(&out, 0, sizeof(out));
+ spin_lock(&dev->priv.mkey_lock);
+ key = dev->priv.mkey_key++;
+ spin_unlock(&dev->priv.mkey_lock);
+ in->seg.qpn_mkey7_0 |= cpu_to_be32(key);
+ in->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_CREATE_MKEY);
+ err = mlx5_cmd_exec(dev, in, inlen, &out, sizeof(out));
+ if (err) {
+ mlx5_core_dbg(dev, "cmd exec faile %d\n", err);
+ return err;
+ }
+
+ if (out.hdr.status) {
+ mlx5_core_dbg(dev, "status %d\n", out.hdr.status);
+ return mlx5_cmd_status_to_err(&out.hdr);
+ }
+
+ mr->key = mlx5_idx_to_mkey(be32_to_cpu(out.mkey) & 0xffffff) | key;
+ mlx5_core_dbg(dev, "out 0x%x, key 0x%x, mkey 0x%x\n", be32_to_cpu(out.mkey), key, mr->key);
+
+ return err;
+}
+EXPORT_SYMBOL(mlx5_core_create_mkey);
+
+int mlx5_core_destroy_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr)
+{
+ struct mlx5_destroy_mkey_mbox_in in;
+ struct mlx5_destroy_mkey_mbox_out out;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(&out, 0, sizeof(out));
+
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DESTROY_MKEY);
+ in.mkey = cpu_to_be32(mlx5_mkey_to_idx(mr->key));
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
+ if (err)
+ return err;
+
+ if (out.hdr.status)
+ return mlx5_cmd_status_to_err(&out.hdr);
+
+ return err;
+}
+EXPORT_SYMBOL(mlx5_core_destroy_mkey);
+
+int mlx5_core_query_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
+ struct mlx5_query_mkey_mbox_out *out, int outlen)
+{
+ struct mlx5_destroy_mkey_mbox_in in;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(out, 0, outlen);
+
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_MKEY);
+ in.mkey = cpu_to_be32(mlx5_mkey_to_idx(mr->key));
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), out, outlen);
+ if (err)
+ return err;
+
+ if (out->hdr.status)
+ return mlx5_cmd_status_to_err(&out->hdr);
+
+ return err;
+}
+EXPORT_SYMBOL(mlx5_core_query_mkey);
+
+int mlx5_core_dump_fill_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
+ u32 *mkey)
+{
+ struct mlx5_query_special_ctxs_mbox_in in;
+ struct mlx5_query_special_ctxs_mbox_out out;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(&out, 0, sizeof(out));
+
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_SPECIAL_CONTEXTS);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
+ if (err)
+ return err;
+
+ if (out.hdr.status)
+ return mlx5_cmd_status_to_err(&out.hdr);
+
+ *mkey = be32_to_cpu(out.dump_fill_mkey);
+
+ return err;
+}
+EXPORT_SYMBOL(mlx5_core_dump_fill_mkey);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c b/drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c
new file mode 100644
index 00000000000..f0bf46339b2
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c
@@ -0,0 +1,435 @@
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <asm-generic/kmap_types.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mlx5/driver.h>
+#include <linux/mlx5/cmd.h>
+#include "mlx5_core.h"
+
+enum {
+ MLX5_PAGES_CANT_GIVE = 0,
+ MLX5_PAGES_GIVE = 1,
+ MLX5_PAGES_TAKE = 2
+};
+
+struct mlx5_pages_req {
+ struct mlx5_core_dev *dev;
+ u32 func_id;
+ s16 npages;
+ struct work_struct work;
+};
+
+struct fw_page {
+ struct rb_node rb_node;
+ u64 addr;
+ struct page *page;
+ u16 func_id;
+};
+
+struct mlx5_query_pages_inbox {
+ struct mlx5_inbox_hdr hdr;
+ u8 rsvd[8];
+};
+
+struct mlx5_query_pages_outbox {
+ struct mlx5_outbox_hdr hdr;
+ u8 reserved[2];
+ __be16 func_id;
+ __be16 init_pages;
+ __be16 num_pages;
+};
+
+struct mlx5_manage_pages_inbox {
+ struct mlx5_inbox_hdr hdr;
+ __be16 rsvd0;
+ __be16 func_id;
+ __be16 rsvd1;
+ __be16 num_entries;
+ u8 rsvd2[16];
+ __be64 pas[0];
+};
+
+struct mlx5_manage_pages_outbox {
+ struct mlx5_outbox_hdr hdr;
+ u8 rsvd0[2];
+ __be16 num_entries;
+ u8 rsvd1[20];
+ __be64 pas[0];
+};
+
+static int insert_page(struct mlx5_core_dev *dev, u64 addr, struct page *page, u16 func_id)
+{
+ struct rb_root *root = &dev->priv.page_root;
+ struct rb_node **new = &root->rb_node;
+ struct rb_node *parent = NULL;
+ struct fw_page *nfp;
+ struct fw_page *tfp;
+
+ while (*new) {
+ parent = *new;
+ tfp = rb_entry(parent, struct fw_page, rb_node);
+ if (tfp->addr < addr)
+ new = &parent->rb_left;
+ else if (tfp->addr > addr)
+ new = &parent->rb_right;
+ else
+ return -EEXIST;
+ }
+
+ nfp = kmalloc(sizeof(*nfp), GFP_KERNEL);
+ if (!nfp)
+ return -ENOMEM;
+
+ nfp->addr = addr;
+ nfp->page = page;
+ nfp->func_id = func_id;
+
+ rb_link_node(&nfp->rb_node, parent, new);
+ rb_insert_color(&nfp->rb_node, root);
+
+ return 0;
+}
+
+static struct page *remove_page(struct mlx5_core_dev *dev, u64 addr)
+{
+ struct rb_root *root = &dev->priv.page_root;
+ struct rb_node *tmp = root->rb_node;
+ struct page *result = NULL;
+ struct fw_page *tfp;
+
+ while (tmp) {
+ tfp = rb_entry(tmp, struct fw_page, rb_node);
+ if (tfp->addr < addr) {
+ tmp = tmp->rb_left;
+ } else if (tfp->addr > addr) {
+ tmp = tmp->rb_right;
+ } else {
+ rb_erase(&tfp->rb_node, root);
+ result = tfp->page;
+ kfree(tfp);
+ break;
+ }
+ }
+
+ return result;
+}
+
+static int mlx5_cmd_query_pages(struct mlx5_core_dev *dev, u16 *func_id,
+ s16 *pages, s16 *init_pages)
+{
+ struct mlx5_query_pages_inbox in;
+ struct mlx5_query_pages_outbox out;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(&out, 0, sizeof(out));
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_PAGES);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
+ if (err)
+ return err;
+
+ if (out.hdr.status)
+ return mlx5_cmd_status_to_err(&out.hdr);
+
+ if (pages)
+ *pages = be16_to_cpu(out.num_pages);
+ if (init_pages)
+ *init_pages = be16_to_cpu(out.init_pages);
+ *func_id = be16_to_cpu(out.func_id);
+
+ return err;
+}
+
+static int give_pages(struct mlx5_core_dev *dev, u16 func_id, int npages,
+ int notify_fail)
+{
+ struct mlx5_manage_pages_inbox *in;
+ struct mlx5_manage_pages_outbox out;
+ struct page *page;
+ int inlen;
+ u64 addr;
+ int err;
+ int i;
+
+ inlen = sizeof(*in) + npages * sizeof(in->pas[0]);
+ in = mlx5_vzalloc(inlen);
+ if (!in) {
+ mlx5_core_warn(dev, "vzalloc failed %d\n", inlen);
+ return -ENOMEM;
+ }
+ memset(&out, 0, sizeof(out));
+
+ for (i = 0; i < npages; i++) {
+ page = alloc_page(GFP_HIGHUSER);
+ if (!page) {
+ err = -ENOMEM;
+ mlx5_core_warn(dev, "failed to allocate page\n");
+ goto out_alloc;
+ }
+ addr = dma_map_page(&dev->pdev->dev, page, 0,
+ PAGE_SIZE, DMA_BIDIRECTIONAL);
+ if (dma_mapping_error(&dev->pdev->dev, addr)) {
+ mlx5_core_warn(dev, "failed dma mapping page\n");
+ __free_page(page);
+ err = -ENOMEM;
+ goto out_alloc;
+ }
+ err = insert_page(dev, addr, page, func_id);
+ if (err) {
+ mlx5_core_err(dev, "failed to track allocated page\n");
+ dma_unmap_page(&dev->pdev->dev, addr, PAGE_SIZE, DMA_BIDIRECTIONAL);
+ __free_page(page);
+ err = -ENOMEM;
+ goto out_alloc;
+ }
+ in->pas[i] = cpu_to_be64(addr);
+ }
+
+ in->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_MANAGE_PAGES);
+ in->hdr.opmod = cpu_to_be16(MLX5_PAGES_GIVE);
+ in->func_id = cpu_to_be16(func_id);
+ in->num_entries = cpu_to_be16(npages);
+ err = mlx5_cmd_exec(dev, in, inlen, &out, sizeof(out));
+ mlx5_core_dbg(dev, "err %d\n", err);
+ if (err) {
+ mlx5_core_warn(dev, "func_id 0x%x, npages %d, err %d\n", func_id, npages, err);
+ goto out_alloc;
+ }
+ dev->priv.fw_pages += npages;
+
+ if (out.hdr.status) {
+ err = mlx5_cmd_status_to_err(&out.hdr);
+ if (err) {
+ mlx5_core_warn(dev, "func_id 0x%x, npages %d, status %d\n", func_id, npages, out.hdr.status);
+ goto out_alloc;
+ }
+ }
+
+ mlx5_core_dbg(dev, "err %d\n", err);
+
+ goto out_free;
+
+out_alloc:
+ if (notify_fail) {
+ memset(in, 0, inlen);
+ memset(&out, 0, sizeof(out));
+ in->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_MANAGE_PAGES);
+ in->hdr.opmod = cpu_to_be16(MLX5_PAGES_CANT_GIVE);
+ if (mlx5_cmd_exec(dev, in, sizeof(*in), &out, sizeof(out)))
+ mlx5_core_warn(dev, "\n");
+ }
+ for (i--; i >= 0; i--) {
+ addr = be64_to_cpu(in->pas[i]);
+ page = remove_page(dev, addr);
+ if (!page) {
+ mlx5_core_err(dev, "BUG: can't remove page at addr 0x%llx\n",
+ addr);
+ continue;
+ }
+ dma_unmap_page(&dev->pdev->dev, addr, PAGE_SIZE, DMA_BIDIRECTIONAL);
+ __free_page(page);
+ }
+
+out_free:
+ mlx5_vfree(in);
+ return err;
+}
+
+static int reclaim_pages(struct mlx5_core_dev *dev, u32 func_id, int npages,
+ int *nclaimed)
+{
+ struct mlx5_manage_pages_inbox in;
+ struct mlx5_manage_pages_outbox *out;
+ struct page *page;
+ int num_claimed;
+ int outlen;
+ u64 addr;
+ int err;
+ int i;
+
+ memset(&in, 0, sizeof(in));
+ outlen = sizeof(*out) + npages * sizeof(out->pas[0]);
+ out = mlx5_vzalloc(outlen);
+ if (!out)
+ return -ENOMEM;
+
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_MANAGE_PAGES);
+ in.hdr.opmod = cpu_to_be16(MLX5_PAGES_TAKE);
+ in.func_id = cpu_to_be16(func_id);
+ in.num_entries = cpu_to_be16(npages);
+ mlx5_core_dbg(dev, "npages %d, outlen %d\n", npages, outlen);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), out, outlen);
+ if (err) {
+ mlx5_core_err(dev, "failed recliaming pages\n");
+ goto out_free;
+ }
+ dev->priv.fw_pages -= npages;
+
+ if (out->hdr.status) {
+ err = mlx5_cmd_status_to_err(&out->hdr);
+ goto out_free;
+ }
+
+ num_claimed = be16_to_cpu(out->num_entries);
+ if (nclaimed)
+ *nclaimed = num_claimed;
+
+ for (i = 0; i < num_claimed; i++) {
+ addr = be64_to_cpu(out->pas[i]);
+ page = remove_page(dev, addr);
+ if (!page) {
+ mlx5_core_warn(dev, "FW reported unknown DMA address 0x%llx\n", addr);
+ } else {
+ dma_unmap_page(&dev->pdev->dev, addr, PAGE_SIZE, DMA_BIDIRECTIONAL);
+ __free_page(page);
+ }
+ }
+
+out_free:
+ mlx5_vfree(out);
+ return err;
+}
+
+static void pages_work_handler(struct work_struct *work)
+{
+ struct mlx5_pages_req *req = container_of(work, struct mlx5_pages_req, work);
+ struct mlx5_core_dev *dev = req->dev;
+ int err = 0;
+
+ if (req->npages < 0)
+ err = reclaim_pages(dev, req->func_id, -1 * req->npages, NULL);
+ else if (req->npages > 0)
+ err = give_pages(dev, req->func_id, req->npages, 1);
+
+ if (err)
+ mlx5_core_warn(dev, "%s fail %d\n", req->npages < 0 ?
+ "reclaim" : "give", err);
+
+ kfree(req);
+}
+
+void mlx5_core_req_pages_handler(struct mlx5_core_dev *dev, u16 func_id,
+ s16 npages)
+{
+ struct mlx5_pages_req *req;
+
+ req = kzalloc(sizeof(*req), GFP_ATOMIC);
+ if (!req) {
+ mlx5_core_warn(dev, "failed to allocate pages request\n");
+ return;
+ }
+
+ req->dev = dev;
+ req->func_id = func_id;
+ req->npages = npages;
+ INIT_WORK(&req->work, pages_work_handler);
+ queue_work(dev->priv.pg_wq, &req->work);
+}
+
+int mlx5_satisfy_startup_pages(struct mlx5_core_dev *dev)
+{
+ s16 uninitialized_var(init_pages);
+ u16 uninitialized_var(func_id);
+ int err;
+
+ err = mlx5_cmd_query_pages(dev, &func_id, NULL, &init_pages);
+ if (err)
+ return err;
+
+ mlx5_core_dbg(dev, "requested %d init pages for func_id 0x%x\n", init_pages, func_id);
+
+ return give_pages(dev, func_id, init_pages, 0);
+}
+
+static int optimal_reclaimed_pages(void)
+{
+ struct mlx5_cmd_prot_block *block;
+ struct mlx5_cmd_layout *lay;
+ int ret;
+
+ ret = (sizeof(lay->in) + sizeof(block->data) -
+ sizeof(struct mlx5_manage_pages_outbox)) / 8;
+
+ return ret;
+}
+
+int mlx5_reclaim_startup_pages(struct mlx5_core_dev *dev)
+{
+ unsigned long end = jiffies + msecs_to_jiffies(5000);
+ struct fw_page *fwp;
+ struct rb_node *p;
+ int err;
+
+ do {
+ p = rb_first(&dev->priv.page_root);
+ if (p) {
+ fwp = rb_entry(p, struct fw_page, rb_node);
+ err = reclaim_pages(dev, fwp->func_id, optimal_reclaimed_pages(), NULL);
+ if (err) {
+ mlx5_core_warn(dev, "failed reclaiming pages (%d)\n", err);
+ return err;
+ }
+ }
+ if (time_after(jiffies, end)) {
+ mlx5_core_warn(dev, "FW did not return all pages. giving up...\n");
+ break;
+ }
+ } while (p);
+
+ return 0;
+}
+
+void mlx5_pagealloc_init(struct mlx5_core_dev *dev)
+{
+ dev->priv.page_root = RB_ROOT;
+}
+
+void mlx5_pagealloc_cleanup(struct mlx5_core_dev *dev)
+{
+ /* nothing */
+}
+
+int mlx5_pagealloc_start(struct mlx5_core_dev *dev)
+{
+ dev->priv.pg_wq = create_singlethread_workqueue("mlx5_page_allocator");
+ if (!dev->priv.pg_wq)
+ return -ENOMEM;
+
+ return 0;
+}
+
+void mlx5_pagealloc_stop(struct mlx5_core_dev *dev)
+{
+ destroy_workqueue(dev->priv.pg_wq);
+}
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/pd.c b/drivers/net/ethernet/mellanox/mlx5/core/pd.c
new file mode 100644
index 00000000000..790da5c4ca4
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx5/core/pd.c
@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mlx5/driver.h>
+#include <linux/mlx5/cmd.h>
+#include "mlx5_core.h"
+
+struct mlx5_alloc_pd_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ u8 rsvd[8];
+};
+
+struct mlx5_alloc_pd_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ __be32 pdn;
+ u8 rsvd[4];
+};
+
+struct mlx5_dealloc_pd_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ __be32 pdn;
+ u8 rsvd[4];
+};
+
+struct mlx5_dealloc_pd_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ u8 rsvd[8];
+};
+
+int mlx5_core_alloc_pd(struct mlx5_core_dev *dev, u32 *pdn)
+{
+ struct mlx5_alloc_pd_mbox_in in;
+ struct mlx5_alloc_pd_mbox_out out;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(&out, 0, sizeof(out));
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_ALLOC_PD);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
+ if (err)
+ return err;
+
+ if (out.hdr.status)
+ return mlx5_cmd_status_to_err(&out.hdr);
+
+ *pdn = be32_to_cpu(out.pdn) & 0xffffff;
+ return err;
+}
+EXPORT_SYMBOL(mlx5_core_alloc_pd);
+
+int mlx5_core_dealloc_pd(struct mlx5_core_dev *dev, u32 pdn)
+{
+ struct mlx5_dealloc_pd_mbox_in in;
+ struct mlx5_dealloc_pd_mbox_out out;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(&out, 0, sizeof(out));
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DEALLOC_PD);
+ in.pdn = cpu_to_be32(pdn);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
+ if (err)
+ return err;
+
+ if (out.hdr.status)
+ return mlx5_cmd_status_to_err(&out.hdr);
+
+ return err;
+}
+EXPORT_SYMBOL(mlx5_core_dealloc_pd);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/port.c b/drivers/net/ethernet/mellanox/mlx5/core/port.c
new file mode 100644
index 00000000000..f6afe7b5a67
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx5/core/port.c
@@ -0,0 +1,104 @@
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/module.h>
+#include <linux/mlx5/driver.h>
+#include <linux/mlx5/cmd.h>
+#include "mlx5_core.h"
+
+int mlx5_core_access_reg(struct mlx5_core_dev *dev, void *data_in,
+ int size_in, void *data_out, int size_out,
+ u16 reg_num, int arg, int write)
+{
+ struct mlx5_access_reg_mbox_in *in = NULL;
+ struct mlx5_access_reg_mbox_out *out = NULL;
+ int err = -ENOMEM;
+
+ in = mlx5_vzalloc(sizeof(*in) + size_in);
+ if (!in)
+ return -ENOMEM;
+
+ out = mlx5_vzalloc(sizeof(*out) + size_out);
+ if (!out)
+ goto ex1;
+
+ memcpy(in->data, data_in, size_in);
+ in->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_ACCESS_REG);
+ in->hdr.opmod = cpu_to_be16(!write);
+ in->arg = cpu_to_be32(arg);
+ in->register_id = cpu_to_be16(reg_num);
+ err = mlx5_cmd_exec(dev, in, sizeof(*in) + size_in, out,
+ sizeof(out) + size_out);
+ if (err)
+ goto ex2;
+
+ if (out->hdr.status)
+ err = mlx5_cmd_status_to_err(&out->hdr);
+
+ if (!err)
+ memcpy(data_out, out->data, size_out);
+
+ex2:
+ mlx5_vfree(out);
+ex1:
+ mlx5_vfree(in);
+ return err;
+}
+EXPORT_SYMBOL_GPL(mlx5_core_access_reg);
+
+
+struct mlx5_reg_pcap {
+ u8 rsvd0;
+ u8 port_num;
+ u8 rsvd1[2];
+ __be32 caps_127_96;
+ __be32 caps_95_64;
+ __be32 caps_63_32;
+ __be32 caps_31_0;
+};
+
+int mlx5_set_port_caps(struct mlx5_core_dev *dev, int port_num, u32 caps)
+{
+ struct mlx5_reg_pcap in;
+ struct mlx5_reg_pcap out;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ in.caps_127_96 = cpu_to_be32(caps);
+ in.port_num = port_num;
+
+ err = mlx5_core_access_reg(dev, &in, sizeof(in), &out,
+ sizeof(out), MLX5_REG_PCAP, 0, 1);
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(mlx5_set_port_caps);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/qp.c b/drivers/net/ethernet/mellanox/mlx5/core/qp.c
new file mode 100644
index 00000000000..54faf8bfcaf
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx5/core/qp.c
@@ -0,0 +1,301 @@
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+
+#include <linux/gfp.h>
+#include <linux/export.h>
+#include <linux/mlx5/cmd.h>
+#include <linux/mlx5/qp.h>
+#include <linux/mlx5/driver.h>
+
+#include "mlx5_core.h"
+
+void mlx5_qp_event(struct mlx5_core_dev *dev, u32 qpn, int event_type)
+{
+ struct mlx5_qp_table *table = &dev->priv.qp_table;
+ struct mlx5_core_qp *qp;
+
+ spin_lock(&table->lock);
+
+ qp = radix_tree_lookup(&table->tree, qpn);
+ if (qp)
+ atomic_inc(&qp->refcount);
+
+ spin_unlock(&table->lock);
+
+ if (!qp) {
+ mlx5_core_warn(dev, "Async event for bogus QP 0x%x\n", qpn);
+ return;
+ }
+
+ qp->event(qp, event_type);
+
+ if (atomic_dec_and_test(&qp->refcount))
+ complete(&qp->free);
+}
+
+int mlx5_core_create_qp(struct mlx5_core_dev *dev,
+ struct mlx5_core_qp *qp,
+ struct mlx5_create_qp_mbox_in *in,
+ int inlen)
+{
+ struct mlx5_qp_table *table = &dev->priv.qp_table;
+ struct mlx5_create_qp_mbox_out out;
+ struct mlx5_destroy_qp_mbox_in din;
+ struct mlx5_destroy_qp_mbox_out dout;
+ int err;
+
+ memset(&dout, 0, sizeof(dout));
+ in->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_CREATE_QP);
+
+ err = mlx5_cmd_exec(dev, in, inlen, &out, sizeof(out));
+ if (err) {
+ mlx5_core_warn(dev, "ret %d", err);
+ return err;
+ }
+
+ if (out.hdr.status) {
+ pr_warn("current num of QPs 0x%x\n", atomic_read(&dev->num_qps));
+ return mlx5_cmd_status_to_err(&out.hdr);
+ }
+
+ qp->qpn = be32_to_cpu(out.qpn) & 0xffffff;
+ mlx5_core_dbg(dev, "qpn = 0x%x\n", qp->qpn);
+
+ spin_lock_irq(&table->lock);
+ err = radix_tree_insert(&table->tree, qp->qpn, qp);
+ spin_unlock_irq(&table->lock);
+ if (err) {
+ mlx5_core_warn(dev, "err %d", err);
+ goto err_cmd;
+ }
+
+ err = mlx5_debug_qp_add(dev, qp);
+ if (err)
+ mlx5_core_dbg(dev, "failed adding QP 0x%x to debug file system\n",
+ qp->qpn);
+
+ qp->pid = current->pid;
+ atomic_set(&qp->refcount, 1);
+ atomic_inc(&dev->num_qps);
+ init_completion(&qp->free);
+
+ return 0;
+
+err_cmd:
+ memset(&din, 0, sizeof(din));
+ memset(&dout, 0, sizeof(dout));
+ din.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DESTROY_QP);
+ din.qpn = cpu_to_be32(qp->qpn);
+ mlx5_cmd_exec(dev, &din, sizeof(din), &out, sizeof(dout));
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(mlx5_core_create_qp);
+
+int mlx5_core_destroy_qp(struct mlx5_core_dev *dev,
+ struct mlx5_core_qp *qp)
+{
+ struct mlx5_destroy_qp_mbox_in in;
+ struct mlx5_destroy_qp_mbox_out out;
+ struct mlx5_qp_table *table = &dev->priv.qp_table;
+ unsigned long flags;
+ int err;
+
+ mlx5_debug_qp_remove(dev, qp);
+
+ spin_lock_irqsave(&table->lock, flags);
+ radix_tree_delete(&table->tree, qp->qpn);
+ spin_unlock_irqrestore(&table->lock, flags);
+
+ if (atomic_dec_and_test(&qp->refcount))
+ complete(&qp->free);
+ wait_for_completion(&qp->free);
+
+ memset(&in, 0, sizeof(in));
+ memset(&out, 0, sizeof(out));
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DESTROY_QP);
+ in.qpn = cpu_to_be32(qp->qpn);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
+ if (err)
+ return err;
+
+ if (out.hdr.status)
+ return mlx5_cmd_status_to_err(&out.hdr);
+
+ atomic_dec(&dev->num_qps);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(mlx5_core_destroy_qp);
+
+int mlx5_core_qp_modify(struct mlx5_core_dev *dev, enum mlx5_qp_state cur_state,
+ enum mlx5_qp_state new_state,
+ struct mlx5_modify_qp_mbox_in *in, int sqd_event,
+ struct mlx5_core_qp *qp)
+{
+ static const u16 optab[MLX5_QP_NUM_STATE][MLX5_QP_NUM_STATE] = {
+ [MLX5_QP_STATE_RST] = {
+ [MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP,
+ [MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP,
+ [MLX5_QP_STATE_INIT] = MLX5_CMD_OP_RST2INIT_QP,
+ },
+ [MLX5_QP_STATE_INIT] = {
+ [MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP,
+ [MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP,
+ [MLX5_QP_STATE_INIT] = MLX5_CMD_OP_INIT2INIT_QP,
+ [MLX5_QP_STATE_RTR] = MLX5_CMD_OP_INIT2RTR_QP,
+ },
+ [MLX5_QP_STATE_RTR] = {
+ [MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP,
+ [MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP,
+ [MLX5_QP_STATE_RTS] = MLX5_CMD_OP_RTR2RTS_QP,
+ },
+ [MLX5_QP_STATE_RTS] = {
+ [MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP,
+ [MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP,
+ [MLX5_QP_STATE_RTS] = MLX5_CMD_OP_RTS2RTS_QP,
+ [MLX5_QP_STATE_SQD] = MLX5_CMD_OP_RTS2SQD_QP,
+ },
+ [MLX5_QP_STATE_SQD] = {
+ [MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP,
+ [MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP,
+ [MLX5_QP_STATE_RTS] = MLX5_CMD_OP_SQD2RTS_QP,
+ [MLX5_QP_STATE_SQD] = MLX5_CMD_OP_SQD2SQD_QP,
+ },
+ [MLX5_QP_STATE_SQER] = {
+ [MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP,
+ [MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP,
+ [MLX5_QP_STATE_RTS] = MLX5_CMD_OP_SQERR2RTS_QP,
+ },
+ [MLX5_QP_STATE_ERR] = {
+ [MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP,
+ [MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP,
+ }
+ };
+
+ struct mlx5_modify_qp_mbox_out out;
+ int err = 0;
+ u16 op;
+
+ if (cur_state >= MLX5_QP_NUM_STATE || new_state >= MLX5_QP_NUM_STATE ||
+ !optab[cur_state][new_state])
+ return -EINVAL;
+
+ memset(&out, 0, sizeof(out));
+ op = optab[cur_state][new_state];
+ in->hdr.opcode = cpu_to_be16(op);
+ in->qpn = cpu_to_be32(qp->qpn);
+ err = mlx5_cmd_exec(dev, in, sizeof(*in), &out, sizeof(out));
+ if (err)
+ return err;
+
+ return mlx5_cmd_status_to_err(&out.hdr);
+}
+EXPORT_SYMBOL_GPL(mlx5_core_qp_modify);
+
+void mlx5_init_qp_table(struct mlx5_core_dev *dev)
+{
+ struct mlx5_qp_table *table = &dev->priv.qp_table;
+
+ spin_lock_init(&table->lock);
+ INIT_RADIX_TREE(&table->tree, GFP_ATOMIC);
+ mlx5_qp_debugfs_init(dev);
+}
+
+void mlx5_cleanup_qp_table(struct mlx5_core_dev *dev)
+{
+ mlx5_qp_debugfs_cleanup(dev);
+}
+
+int mlx5_core_qp_query(struct mlx5_core_dev *dev, struct mlx5_core_qp *qp,
+ struct mlx5_query_qp_mbox_out *out, int outlen)
+{
+ struct mlx5_query_qp_mbox_in in;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(out, 0, outlen);
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_QP);
+ in.qpn = cpu_to_be32(qp->qpn);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), out, outlen);
+ if (err)
+ return err;
+
+ if (out->hdr.status)
+ return mlx5_cmd_status_to_err(&out->hdr);
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(mlx5_core_qp_query);
+
+int mlx5_core_xrcd_alloc(struct mlx5_core_dev *dev, u32 *xrcdn)
+{
+ struct mlx5_alloc_xrcd_mbox_in in;
+ struct mlx5_alloc_xrcd_mbox_out out;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(&out, 0, sizeof(out));
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_ALLOC_XRCD);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
+ if (err)
+ return err;
+
+ if (out.hdr.status)
+ err = mlx5_cmd_status_to_err(&out.hdr);
+ else
+ *xrcdn = be32_to_cpu(out.xrcdn);
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(mlx5_core_xrcd_alloc);
+
+int mlx5_core_xrcd_dealloc(struct mlx5_core_dev *dev, u32 xrcdn)
+{
+ struct mlx5_dealloc_xrcd_mbox_in in;
+ struct mlx5_dealloc_xrcd_mbox_out out;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(&out, 0, sizeof(out));
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DEALLOC_XRCD);
+ in.xrcdn = cpu_to_be32(xrcdn);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
+ if (err)
+ return err;
+
+ if (out.hdr.status)
+ err = mlx5_cmd_status_to_err(&out.hdr);
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(mlx5_core_xrcd_dealloc);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/srq.c b/drivers/net/ethernet/mellanox/mlx5/core/srq.c
new file mode 100644
index 00000000000..38bce93f831
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx5/core/srq.c
@@ -0,0 +1,223 @@
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mlx5/driver.h>
+#include <linux/mlx5/cmd.h>
+#include <linux/mlx5/srq.h>
+#include <rdma/ib_verbs.h>
+#include "mlx5_core.h"
+
+void mlx5_srq_event(struct mlx5_core_dev *dev, u32 srqn, int event_type)
+{
+ struct mlx5_srq_table *table = &dev->priv.srq_table;
+ struct mlx5_core_srq *srq;
+
+ spin_lock(&table->lock);
+
+ srq = radix_tree_lookup(&table->tree, srqn);
+ if (srq)
+ atomic_inc(&srq->refcount);
+
+ spin_unlock(&table->lock);
+
+ if (!srq) {
+ mlx5_core_warn(dev, "Async event for bogus SRQ 0x%08x\n", srqn);
+ return;
+ }
+
+ srq->event(srq, event_type);
+
+ if (atomic_dec_and_test(&srq->refcount))
+ complete(&srq->free);
+}
+
+struct mlx5_core_srq *mlx5_core_get_srq(struct mlx5_core_dev *dev, u32 srqn)
+{
+ struct mlx5_srq_table *table = &dev->priv.srq_table;
+ struct mlx5_core_srq *srq;
+
+ spin_lock(&table->lock);
+
+ srq = radix_tree_lookup(&table->tree, srqn);
+ if (srq)
+ atomic_inc(&srq->refcount);
+
+ spin_unlock(&table->lock);
+
+ return srq;
+}
+EXPORT_SYMBOL(mlx5_core_get_srq);
+
+int mlx5_core_create_srq(struct mlx5_core_dev *dev, struct mlx5_core_srq *srq,
+ struct mlx5_create_srq_mbox_in *in, int inlen)
+{
+ struct mlx5_create_srq_mbox_out out;
+ struct mlx5_srq_table *table = &dev->priv.srq_table;
+ struct mlx5_destroy_srq_mbox_in din;
+ struct mlx5_destroy_srq_mbox_out dout;
+ int err;
+
+ memset(&out, 0, sizeof(out));
+ in->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_CREATE_SRQ);
+ err = mlx5_cmd_exec(dev, in, inlen, &out, sizeof(out));
+ if (err)
+ return err;
+
+ if (out.hdr.status)
+ return mlx5_cmd_status_to_err(&out.hdr);
+
+ srq->srqn = be32_to_cpu(out.srqn) & 0xffffff;
+
+ atomic_set(&srq->refcount, 1);
+ init_completion(&srq->free);
+
+ spin_lock_irq(&table->lock);
+ err = radix_tree_insert(&table->tree, srq->srqn, srq);
+ spin_unlock_irq(&table->lock);
+ if (err) {
+ mlx5_core_warn(dev, "err %d, srqn 0x%x\n", err, srq->srqn);
+ goto err_cmd;
+ }
+
+ return 0;
+
+err_cmd:
+ memset(&din, 0, sizeof(din));
+ memset(&dout, 0, sizeof(dout));
+ din.srqn = cpu_to_be32(srq->srqn);
+ din.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DESTROY_SRQ);
+ mlx5_cmd_exec(dev, &din, sizeof(din), &dout, sizeof(dout));
+ return err;
+}
+EXPORT_SYMBOL(mlx5_core_create_srq);
+
+int mlx5_core_destroy_srq(struct mlx5_core_dev *dev, struct mlx5_core_srq *srq)
+{
+ struct mlx5_destroy_srq_mbox_in in;
+ struct mlx5_destroy_srq_mbox_out out;
+ struct mlx5_srq_table *table = &dev->priv.srq_table;
+ struct mlx5_core_srq *tmp;
+ int err;
+
+ spin_lock_irq(&table->lock);
+ tmp = radix_tree_delete(&table->tree, srq->srqn);
+ spin_unlock_irq(&table->lock);
+ if (!tmp) {
+ mlx5_core_warn(dev, "srq 0x%x not found in tree\n", srq->srqn);
+ return -EINVAL;
+ }
+ if (tmp != srq) {
+ mlx5_core_warn(dev, "corruption on srqn 0x%x\n", srq->srqn);
+ return -EINVAL;
+ }
+
+ memset(&in, 0, sizeof(in));
+ memset(&out, 0, sizeof(out));
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DESTROY_SRQ);
+ in.srqn = cpu_to_be32(srq->srqn);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
+ if (err)
+ return err;
+
+ if (out.hdr.status)
+ return mlx5_cmd_status_to_err(&out.hdr);
+
+ if (atomic_dec_and_test(&srq->refcount))
+ complete(&srq->free);
+ wait_for_completion(&srq->free);
+
+ return 0;
+}
+EXPORT_SYMBOL(mlx5_core_destroy_srq);
+
+int mlx5_core_query_srq(struct mlx5_core_dev *dev, struct mlx5_core_srq *srq,
+ struct mlx5_query_srq_mbox_out *out)
+{
+ struct mlx5_query_srq_mbox_in in;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(out, 0, sizeof(*out));
+
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_SRQ);
+ in.srqn = cpu_to_be32(srq->srqn);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), out, sizeof(*out));
+ if (err)
+ return err;
+
+ if (out->hdr.status)
+ return mlx5_cmd_status_to_err(&out->hdr);
+
+ return err;
+}
+EXPORT_SYMBOL(mlx5_core_query_srq);
+
+int mlx5_core_arm_srq(struct mlx5_core_dev *dev, struct mlx5_core_srq *srq,
+ u16 lwm, int is_srq)
+{
+ struct mlx5_arm_srq_mbox_in in;
+ struct mlx5_arm_srq_mbox_out out;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(&out, 0, sizeof(out));
+
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_ARM_RQ);
+ in.hdr.opmod = cpu_to_be16(!!is_srq);
+ in.srqn = cpu_to_be32(srq->srqn);
+ in.lwm = cpu_to_be16(lwm);
+
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
+ if (err)
+ return err;
+
+ if (out.hdr.status)
+ return mlx5_cmd_status_to_err(&out.hdr);
+
+ return err;
+}
+EXPORT_SYMBOL(mlx5_core_arm_srq);
+
+void mlx5_init_srq_table(struct mlx5_core_dev *dev)
+{
+ struct mlx5_srq_table *table = &dev->priv.srq_table;
+
+ spin_lock_init(&table->lock);
+ INIT_RADIX_TREE(&table->tree, GFP_ATOMIC);
+}
+
+void mlx5_cleanup_srq_table(struct mlx5_core_dev *dev)
+{
+ /* nothing */
+}
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/uar.c b/drivers/net/ethernet/mellanox/mlx5/core/uar.c
new file mode 100644
index 00000000000..71d4a393720
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx5/core/uar.c
@@ -0,0 +1,223 @@
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mlx5/driver.h>
+#include <linux/mlx5/cmd.h>
+#include "mlx5_core.h"
+
+enum {
+ NUM_DRIVER_UARS = 4,
+ NUM_LOW_LAT_UUARS = 4,
+};
+
+
+struct mlx5_alloc_uar_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ u8 rsvd[8];
+};
+
+struct mlx5_alloc_uar_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ __be32 uarn;
+ u8 rsvd[4];
+};
+
+struct mlx5_free_uar_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ __be32 uarn;
+ u8 rsvd[4];
+};
+
+struct mlx5_free_uar_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ u8 rsvd[8];
+};
+
+int mlx5_cmd_alloc_uar(struct mlx5_core_dev *dev, u32 *uarn)
+{
+ struct mlx5_alloc_uar_mbox_in in;
+ struct mlx5_alloc_uar_mbox_out out;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(&out, 0, sizeof(out));
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_ALLOC_UAR);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
+ if (err)
+ goto ex;
+
+ if (out.hdr.status) {
+ err = mlx5_cmd_status_to_err(&out.hdr);
+ goto ex;
+ }
+
+ *uarn = be32_to_cpu(out.uarn) & 0xffffff;
+
+ex:
+ return err;
+}
+EXPORT_SYMBOL(mlx5_cmd_alloc_uar);
+
+int mlx5_cmd_free_uar(struct mlx5_core_dev *dev, u32 uarn)
+{
+ struct mlx5_free_uar_mbox_in in;
+ struct mlx5_free_uar_mbox_out out;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DEALLOC_UAR);
+ in.uarn = cpu_to_be32(uarn);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
+ if (err)
+ goto ex;
+
+ if (out.hdr.status)
+ err = mlx5_cmd_status_to_err(&out.hdr);
+
+ex:
+ return err;
+}
+EXPORT_SYMBOL(mlx5_cmd_free_uar);
+
+static int need_uuar_lock(int uuarn)
+{
+ int tot_uuars = NUM_DRIVER_UARS * MLX5_BF