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Diffstat (limited to 'arch/ia64/sn/pci/pcibr/pcibr_reg.c')
-rw-r--r--arch/ia64/sn/pci/pcibr/pcibr_reg.c282
1 files changed, 282 insertions, 0 deletions
diff --git a/arch/ia64/sn/pci/pcibr/pcibr_reg.c b/arch/ia64/sn/pci/pcibr/pcibr_reg.c
new file mode 100644
index 000000000000..74a74a7d2a13
--- /dev/null
+++ b/arch/ia64/sn/pci/pcibr/pcibr_reg.c
@@ -0,0 +1,282 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2004 Silicon Graphics, Inc. All rights reserved.
+ */
+
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include "pci/pcibus_provider_defs.h"
+#include "pci/pcidev.h"
+#include "pci/tiocp.h"
+#include "pci/pic.h"
+#include "pci/pcibr_provider.h"
+
+union br_ptr {
+ struct tiocp tio;
+ struct pic pic;
+};
+
+/*
+ * Control Register Access -- Read/Write 0000_0020
+ */
+void pcireg_control_bit_clr(struct pcibus_info *pcibus_info, uint64_t bits)
+{
+ union br_ptr *ptr = (union br_ptr *)pcibus_info->pbi_buscommon.bs_base;
+
+ if (pcibus_info) {
+ switch (pcibus_info->pbi_bridge_type) {
+ case PCIBR_BRIDGETYPE_TIOCP:
+ ptr->tio.cp_control &= ~bits;
+ break;
+ case PCIBR_BRIDGETYPE_PIC:
+ ptr->pic.p_wid_control &= ~bits;
+ break;
+ default:
+ panic
+ ("pcireg_control_bit_clr: unknown bridgetype bridge 0x%p",
+ (void *)ptr);
+ }
+ }
+}
+
+void pcireg_control_bit_set(struct pcibus_info *pcibus_info, uint64_t bits)
+{
+ union br_ptr *ptr = (union br_ptr *)pcibus_info->pbi_buscommon.bs_base;
+
+ if (pcibus_info) {
+ switch (pcibus_info->pbi_bridge_type) {
+ case PCIBR_BRIDGETYPE_TIOCP:
+ ptr->tio.cp_control |= bits;
+ break;
+ case PCIBR_BRIDGETYPE_PIC:
+ ptr->pic.p_wid_control |= bits;
+ break;
+ default:
+ panic
+ ("pcireg_control_bit_set: unknown bridgetype bridge 0x%p",
+ (void *)ptr);
+ }
+ }
+}
+
+/*
+ * PCI/PCIX Target Flush Register Access -- Read Only 0000_0050
+ */
+uint64_t pcireg_tflush_get(struct pcibus_info *pcibus_info)
+{
+ union br_ptr *ptr = (union br_ptr *)pcibus_info->pbi_buscommon.bs_base;
+ uint64_t ret = 0;
+
+ if (pcibus_info) {
+ switch (pcibus_info->pbi_bridge_type) {
+ case PCIBR_BRIDGETYPE_TIOCP:
+ ret = ptr->tio.cp_tflush;
+ break;
+ case PCIBR_BRIDGETYPE_PIC:
+ ret = ptr->pic.p_wid_tflush;
+ break;
+ default:
+ panic
+ ("pcireg_tflush_get: unknown bridgetype bridge 0x%p",
+ (void *)ptr);
+ }
+ }
+
+ /* Read of the Target Flush should always return zero */
+ if (ret != 0)
+ panic("pcireg_tflush_get:Target Flush failed\n");
+
+ return ret;
+}
+
+/*
+ * Interrupt Status Register Access -- Read Only 0000_0100
+ */
+uint64_t pcireg_intr_status_get(struct pcibus_info * pcibus_info)
+{
+ union br_ptr *ptr = (union br_ptr *)pcibus_info->pbi_buscommon.bs_base;
+ uint64_t ret = 0;
+
+ if (pcibus_info) {
+ switch (pcibus_info->pbi_bridge_type) {
+ case PCIBR_BRIDGETYPE_TIOCP:
+ ret = ptr->tio.cp_int_status;
+ break;
+ case PCIBR_BRIDGETYPE_PIC:
+ ret = ptr->pic.p_int_status;
+ break;
+ default:
+ panic
+ ("pcireg_intr_status_get: unknown bridgetype bridge 0x%p",
+ (void *)ptr);
+ }
+ }
+ return ret;
+}
+
+/*
+ * Interrupt Enable Register Access -- Read/Write 0000_0108
+ */
+void pcireg_intr_enable_bit_clr(struct pcibus_info *pcibus_info, uint64_t bits)
+{
+ union br_ptr *ptr = (union br_ptr *)pcibus_info->pbi_buscommon.bs_base;
+
+ if (pcibus_info) {
+ switch (pcibus_info->pbi_bridge_type) {
+ case PCIBR_BRIDGETYPE_TIOCP:
+ ptr->tio.cp_int_enable &= ~bits;
+ break;
+ case PCIBR_BRIDGETYPE_PIC:
+ ptr->pic.p_int_enable &= ~bits;
+ break;
+ default:
+ panic
+ ("pcireg_intr_enable_bit_clr: unknown bridgetype bridge 0x%p",
+ (void *)ptr);
+ }
+ }
+}
+
+void pcireg_intr_enable_bit_set(struct pcibus_info *pcibus_info, uint64_t bits)
+{
+ union br_ptr *ptr = (union br_ptr *)pcibus_info->pbi_buscommon.bs_base;
+
+ if (pcibus_info) {
+ switch (pcibus_info->pbi_bridge_type) {
+ case PCIBR_BRIDGETYPE_TIOCP:
+ ptr->tio.cp_int_enable |= bits;
+ break;
+ case PCIBR_BRIDGETYPE_PIC:
+ ptr->pic.p_int_enable |= bits;
+ break;
+ default:
+ panic
+ ("pcireg_intr_enable_bit_set: unknown bridgetype bridge 0x%p",
+ (void *)ptr);
+ }
+ }
+}
+
+/*
+ * Intr Host Address Register (int_addr) -- Read/Write 0000_0130 - 0000_0168
+ */
+void pcireg_intr_addr_addr_set(struct pcibus_info *pcibus_info, int int_n,
+ uint64_t addr)
+{
+ union br_ptr *ptr = (union br_ptr *)pcibus_info->pbi_buscommon.bs_base;
+
+ if (pcibus_info) {
+ switch (pcibus_info->pbi_bridge_type) {
+ case PCIBR_BRIDGETYPE_TIOCP:
+ ptr->tio.cp_int_addr[int_n] &= ~TIOCP_HOST_INTR_ADDR;
+ ptr->tio.cp_int_addr[int_n] |=
+ (addr & TIOCP_HOST_INTR_ADDR);
+ break;
+ case PCIBR_BRIDGETYPE_PIC:
+ ptr->pic.p_int_addr[int_n] &= ~PIC_HOST_INTR_ADDR;
+ ptr->pic.p_int_addr[int_n] |=
+ (addr & PIC_HOST_INTR_ADDR);
+ break;
+ default:
+ panic
+ ("pcireg_intr_addr_addr_get: unknown bridgetype bridge 0x%p",
+ (void *)ptr);
+ }
+ }
+}
+
+/*
+ * Force Interrupt Register Access -- Write Only 0000_01C0 - 0000_01F8
+ */
+void pcireg_force_intr_set(struct pcibus_info *pcibus_info, int int_n)
+{
+ union br_ptr *ptr = (union br_ptr *)pcibus_info->pbi_buscommon.bs_base;
+
+ if (pcibus_info) {
+ switch (pcibus_info->pbi_bridge_type) {
+ case PCIBR_BRIDGETYPE_TIOCP:
+ ptr->tio.cp_force_pin[int_n] = 1;
+ break;
+ case PCIBR_BRIDGETYPE_PIC:
+ ptr->pic.p_force_pin[int_n] = 1;
+ break;
+ default:
+ panic
+ ("pcireg_force_intr_set: unknown bridgetype bridge 0x%p",
+ (void *)ptr);
+ }
+ }
+}
+
+/*
+ * Device(x) Write Buffer Flush Reg Access -- Read Only 0000_0240 - 0000_0258
+ */
+uint64_t pcireg_wrb_flush_get(struct pcibus_info *pcibus_info, int device)
+{
+ union br_ptr *ptr = (union br_ptr *)pcibus_info->pbi_buscommon.bs_base;
+ uint64_t ret = 0;
+
+ if (pcibus_info) {
+ switch (pcibus_info->pbi_bridge_type) {
+ case PCIBR_BRIDGETYPE_TIOCP:
+ ret = ptr->tio.cp_wr_req_buf[device];
+ break;
+ case PCIBR_BRIDGETYPE_PIC:
+ ret = ptr->pic.p_wr_req_buf[device];
+ break;
+ default:
+ panic("pcireg_wrb_flush_get: unknown bridgetype bridge 0x%p", (void *)ptr);
+ }
+
+ }
+ /* Read of the Write Buffer Flush should always return zero */
+ return ret;
+}
+
+void pcireg_int_ate_set(struct pcibus_info *pcibus_info, int ate_index,
+ uint64_t val)
+{
+ union br_ptr *ptr = (union br_ptr *)pcibus_info->pbi_buscommon.bs_base;
+
+ if (pcibus_info) {
+ switch (pcibus_info->pbi_bridge_type) {
+ case PCIBR_BRIDGETYPE_TIOCP:
+ ptr->tio.cp_int_ate_ram[ate_index] = (uint64_t) val;
+ break;
+ case PCIBR_BRIDGETYPE_PIC:
+ ptr->pic.p_int_ate_ram[ate_index] = (uint64_t) val;
+ break;
+ default:
+ panic
+ ("pcireg_int_ate_set: unknown bridgetype bridge 0x%p",
+ (void *)ptr);
+ }
+ }
+}
+
+uint64_t *pcireg_int_ate_addr(struct pcibus_info *pcibus_info, int ate_index)
+{
+ union br_ptr *ptr = (union br_ptr *)pcibus_info->pbi_buscommon.bs_base;
+ uint64_t *ret = (uint64_t *) 0;
+
+ if (pcibus_info) {
+ switch (pcibus_info->pbi_bridge_type) {
+ case PCIBR_BRIDGETYPE_TIOCP:
+ ret =
+ (uint64_t *) & (ptr->tio.cp_int_ate_ram[ate_index]);
+ break;
+ case PCIBR_BRIDGETYPE_PIC:
+ ret =
+ (uint64_t *) & (ptr->pic.p_int_ate_ram[ate_index]);
+ break;
+ default:
+ panic
+ ("pcireg_int_ate_addr: unknown bridgetype bridge 0x%p",
+ (void *)ptr);
+ }
+ }
+ return ret;
+}