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authorGanesan Ramalingam <ganesanr@broadcom.com>2013-08-21 19:32:41 +0530
committerRalf Baechle <ralf@linux-mips.org>2013-09-03 23:22:20 +0200
commit9eac3591e78bb1bf09991b791d6602032d9fd11d (patch)
tree5180ffcaa7350739d27b28c25362115b457d4a1c /arch/mips/netlogic
parente5be1fd007e4fcbab3dd6e2b0993a7ee305c6628 (diff)
downloadlinux-9eac3591e78bb1bf09991b791d6602032d9fd11d.tar.gz
MIPS: Netlogic: Add support for USB on XLP2xx
Add USB intialization code to handle the new XLP2XX USB 3.0 block. This adds xlp/usb-init-xlp2.c to initialize the XLP2XX USB glue-logic for XHCI and EHCI. Interrupt and IO offset code in xlp-hal/iomap.h and xlp/nlm_hal.c is also updated for the new USB block. Signed-off-by: Ganesan Ramalingam <ganesanr@broadcom.com> Signed-off-by: Jayachandran C <jchandra@broadcom.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5744/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/netlogic')
-rw-r--r--arch/mips/netlogic/xlp/Makefile1
-rw-r--r--arch/mips/netlogic/xlp/nlm_hal.c56
-rw-r--r--arch/mips/netlogic/xlp/usb-init-xlp2.c218
-rw-r--r--arch/mips/netlogic/xlp/usb-init.c3
4 files changed, 258 insertions, 20 deletions
diff --git a/arch/mips/netlogic/xlp/Makefile b/arch/mips/netlogic/xlp/Makefile
index 85ac4a892ce..ed9a93c0465 100644
--- a/arch/mips/netlogic/xlp/Makefile
+++ b/arch/mips/netlogic/xlp/Makefile
@@ -1,3 +1,4 @@
obj-y += setup.o nlm_hal.o cop2-ex.o dt.o
obj-$(CONFIG_SMP) += wakeup.o
obj-$(CONFIG_USB) += usb-init.o
+obj-$(CONFIG_USB) += usb-init-xlp2.o
diff --git a/arch/mips/netlogic/xlp/nlm_hal.c b/arch/mips/netlogic/xlp/nlm_hal.c
index 04adb75850f..56c50ba43c9 100644
--- a/arch/mips/netlogic/xlp/nlm_hal.c
+++ b/arch/mips/netlogic/xlp/nlm_hal.c
@@ -65,6 +65,7 @@ int nlm_irq_to_irt(int irq)
uint64_t pcibase;
int devoff, irt;
+ devoff = 0;
switch (irq) {
case PIC_UART_0_IRQ:
devoff = XLP_IO_UART0_OFFSET(0);
@@ -72,24 +73,6 @@ int nlm_irq_to_irt(int irq)
case PIC_UART_1_IRQ:
devoff = XLP_IO_UART1_OFFSET(0);
break;
- case PIC_EHCI_0_IRQ:
- devoff = XLP_IO_USB_EHCI0_OFFSET(0);
- break;
- case PIC_EHCI_1_IRQ:
- devoff = XLP_IO_USB_EHCI1_OFFSET(0);
- break;
- case PIC_OHCI_0_IRQ:
- devoff = XLP_IO_USB_OHCI0_OFFSET(0);
- break;
- case PIC_OHCI_1_IRQ:
- devoff = XLP_IO_USB_OHCI1_OFFSET(0);
- break;
- case PIC_OHCI_2_IRQ:
- devoff = XLP_IO_USB_OHCI2_OFFSET(0);
- break;
- case PIC_OHCI_3_IRQ:
- devoff = XLP_IO_USB_OHCI3_OFFSET(0);
- break;
case PIC_MMC_IRQ:
devoff = XLP_IO_SD_OFFSET(0);
break;
@@ -103,8 +86,41 @@ int nlm_irq_to_irt(int irq)
devoff = XLP_IO_I2C0_OFFSET(0);
break;
default:
- devoff = 0;
- break;
+ if (cpu_is_xlpii()) {
+ switch (irq) {
+ /* XLP2XX has three XHCI USB controller */
+ case PIC_2XX_XHCI_0_IRQ:
+ devoff = XLP2XX_IO_USB_XHCI0_OFFSET(0);
+ break;
+ case PIC_2XX_XHCI_1_IRQ:
+ devoff = XLP2XX_IO_USB_XHCI1_OFFSET(0);
+ break;
+ case PIC_2XX_XHCI_2_IRQ:
+ devoff = XLP2XX_IO_USB_XHCI2_OFFSET(0);
+ break;
+ }
+ } else {
+ switch (irq) {
+ case PIC_EHCI_0_IRQ:
+ devoff = XLP_IO_USB_EHCI0_OFFSET(0);
+ break;
+ case PIC_EHCI_1_IRQ:
+ devoff = XLP_IO_USB_EHCI1_OFFSET(0);
+ break;
+ case PIC_OHCI_0_IRQ:
+ devoff = XLP_IO_USB_OHCI0_OFFSET(0);
+ break;
+ case PIC_OHCI_1_IRQ:
+ devoff = XLP_IO_USB_OHCI1_OFFSET(0);
+ break;
+ case PIC_OHCI_2_IRQ:
+ devoff = XLP_IO_USB_OHCI2_OFFSET(0);
+ break;
+ case PIC_OHCI_3_IRQ:
+ devoff = XLP_IO_USB_OHCI3_OFFSET(0);
+ break;
+ }
+ }
}
if (devoff != 0) {
diff --git a/arch/mips/netlogic/xlp/usb-init-xlp2.c b/arch/mips/netlogic/xlp/usb-init-xlp2.c
new file mode 100644
index 00000000000..36e9c22afc4
--- /dev/null
+++ b/arch/mips/netlogic/xlp/usb-init-xlp2.c
@@ -0,0 +1,218 @@
+/*
+ * Copyright (c) 2003-2013 Broadcom 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 Broadcom
+ * license below:
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY BROADCOM ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL BROADCOM OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/dma-mapping.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/platform_device.h>
+#include <linux/irq.h>
+
+#include <asm/netlogic/common.h>
+#include <asm/netlogic/haldefs.h>
+#include <asm/netlogic/xlp-hal/iomap.h>
+#include <asm/netlogic/xlp-hal/xlp.h>
+
+#define XLPII_USB3_CTL_0 0xc0
+#define XLPII_VAUXRST BIT(0)
+#define XLPII_VCCRST BIT(1)
+#define XLPII_NUM2PORT 9
+#define XLPII_NUM3PORT 13
+#define XLPII_RTUNEREQ BIT(20)
+#define XLPII_MS_CSYSREQ BIT(21)
+#define XLPII_XS_CSYSREQ BIT(22)
+#define XLPII_RETENABLEN BIT(23)
+#define XLPII_TX2RX BIT(24)
+#define XLPII_XHCIREV BIT(25)
+#define XLPII_ECCDIS BIT(26)
+
+#define XLPII_USB3_INT_REG 0xc2
+#define XLPII_USB3_INT_MASK 0xc3
+
+#define XLPII_USB_PHY_TEST 0xc6
+#define XLPII_PRESET BIT(0)
+#define XLPII_ATERESET BIT(1)
+#define XLPII_LOOPEN BIT(2)
+#define XLPII_TESTPDHSP BIT(3)
+#define XLPII_TESTPDSSP BIT(4)
+#define XLPII_TESTBURNIN BIT(5)
+
+#define XLPII_USB_PHY_LOS_LV 0xc9
+#define XLPII_LOSLEV 0
+#define XLPII_LOSBIAS 5
+#define XLPII_SQRXTX 8
+#define XLPII_TXBOOST 11
+#define XLPII_RSLKSEL 16
+#define XLPII_FSEL 20
+
+#define XLPII_USB_RFCLK_REG 0xcc
+#define XLPII_VVLD 30
+
+#define nlm_read_usb_reg(b, r) nlm_read_reg(b, r)
+#define nlm_write_usb_reg(b, r, v) nlm_write_reg(b, r, v)
+
+#define nlm_xlpii_get_usb_pcibase(node, inst) \
+ nlm_pcicfg_base(XLP2XX_IO_USB_OFFSET(node, inst))
+#define nlm_xlpii_get_usb_regbase(node, inst) \
+ (nlm_xlpii_get_usb_pcibase(node, inst) + XLP_IO_PCI_HDRSZ)
+
+static void xlpii_usb_ack(struct irq_data *data)
+{
+ u64 port_addr;
+
+ switch (data->irq) {
+ case PIC_2XX_XHCI_0_IRQ:
+ port_addr = nlm_xlpii_get_usb_regbase(0, 1);
+ break;
+ case PIC_2XX_XHCI_1_IRQ:
+ port_addr = nlm_xlpii_get_usb_regbase(0, 2);
+ break;
+ case PIC_2XX_XHCI_2_IRQ:
+ port_addr = nlm_xlpii_get_usb_regbase(0, 3);
+ break;
+ default:
+ pr_err("No matching USB irq!\n");
+ return;
+ }
+ nlm_write_usb_reg(port_addr, XLPII_USB3_INT_REG, 0xffffffff);
+}
+
+static void nlm_xlpii_usb_hw_reset(int node, int port)
+{
+ u64 port_addr, xhci_base, pci_base;
+ void __iomem *corebase;
+ u32 val;
+
+ port_addr = nlm_xlpii_get_usb_regbase(node, port);
+
+ /* Set frequency */
+ val = nlm_read_usb_reg(port_addr, XLPII_USB_PHY_LOS_LV);
+ val &= ~(0x3f << XLPII_FSEL);
+ val |= (0x27 << XLPII_FSEL);
+ nlm_write_usb_reg(port_addr, XLPII_USB_PHY_LOS_LV, val);
+
+ val = nlm_read_usb_reg(port_addr, XLPII_USB_RFCLK_REG);
+ val |= (1 << XLPII_VVLD);
+ nlm_write_usb_reg(port_addr, XLPII_USB_RFCLK_REG, val);
+
+ /* PHY reset */
+ val = nlm_read_usb_reg(port_addr, XLPII_USB_PHY_TEST);
+ val &= (XLPII_ATERESET | XLPII_LOOPEN | XLPII_TESTPDHSP
+ | XLPII_TESTPDSSP | XLPII_TESTBURNIN);
+ nlm_write_usb_reg(port_addr, XLPII_USB_PHY_TEST, val);
+
+ /* Setup control register */
+ val = XLPII_VAUXRST | XLPII_VCCRST | (1 << XLPII_NUM2PORT)
+ | (1 << XLPII_NUM3PORT) | XLPII_MS_CSYSREQ | XLPII_XS_CSYSREQ
+ | XLPII_RETENABLEN | XLPII_XHCIREV;
+ nlm_write_usb_reg(port_addr, XLPII_USB3_CTL_0, val);
+
+ /* Enable interrupts */
+ nlm_write_usb_reg(port_addr, XLPII_USB3_INT_MASK, 0x00000001);
+
+ /* Clear all interrupts */
+ nlm_write_usb_reg(port_addr, XLPII_USB3_INT_REG, 0xffffffff);
+
+ udelay(2000);
+
+ /* XHCI configuration at PCI mem */
+ pci_base = nlm_xlpii_get_usb_pcibase(node, port);
+ xhci_base = nlm_read_usb_reg(pci_base, 0x4) & ~0xf;
+ corebase = ioremap(xhci_base, 0x10000);
+ if (!corebase)
+ return;
+
+ writel(0x240002, corebase + 0xc2c0);
+ /* GCTL 0xc110 */
+ val = readl(corebase + 0xc110);
+ val &= ~(0x3 << 12);
+ val |= (1 << 12);
+ writel(val, corebase + 0xc110);
+ udelay(100);
+
+ /* PHYCFG 0xc200 */
+ val = readl(corebase + 0xc200);
+ val &= ~(1 << 6);
+ writel(val, corebase + 0xc200);
+ udelay(100);
+
+ /* PIPECTL 0xc2c0 */
+ val = readl(corebase + 0xc2c0);
+ val &= ~(1 << 17);
+ writel(val, corebase + 0xc2c0);
+
+ iounmap(corebase);
+}
+
+static int __init nlm_platform_xlpii_usb_init(void)
+{
+ if (!cpu_is_xlpii())
+ return 0;
+
+ pr_info("Initializing 2XX USB Interface\n");
+ nlm_xlpii_usb_hw_reset(0, 1);
+ nlm_xlpii_usb_hw_reset(0, 2);
+ nlm_xlpii_usb_hw_reset(0, 3);
+ nlm_set_pic_extra_ack(0, PIC_2XX_XHCI_0_IRQ, xlpii_usb_ack);
+ nlm_set_pic_extra_ack(0, PIC_2XX_XHCI_1_IRQ, xlpii_usb_ack);
+ nlm_set_pic_extra_ack(0, PIC_2XX_XHCI_2_IRQ, xlpii_usb_ack);
+
+ return 0;
+}
+
+arch_initcall(nlm_platform_xlpii_usb_init);
+
+static u64 xlp_usb_dmamask = ~(u32)0;
+
+/* Fixup IRQ for USB devices on XLP the SoC PCIe bus */
+static void nlm_usb_fixup_final(struct pci_dev *dev)
+{
+ dev->dev.dma_mask = &xlp_usb_dmamask;
+ dev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
+ switch (dev->devfn) {
+ case 0x21:
+ dev->irq = PIC_2XX_XHCI_0_IRQ;
+ break;
+ case 0x22:
+ dev->irq = PIC_2XX_XHCI_1_IRQ;
+ break;
+ case 0x23:
+ dev->irq = PIC_2XX_XHCI_2_IRQ;
+ break;
+ }
+}
+
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_NETLOGIC, PCI_DEVICE_ID_NLM_XHCI,
+ nlm_usb_fixup_final);
diff --git a/arch/mips/netlogic/xlp/usb-init.c b/arch/mips/netlogic/xlp/usb-init.c
index d5378ef3c0f..f8117985f0f 100644
--- a/arch/mips/netlogic/xlp/usb-init.c
+++ b/arch/mips/netlogic/xlp/usb-init.c
@@ -99,6 +99,9 @@ static void nlm_usb_hw_reset(int node, int port)
static int __init nlm_platform_usb_init(void)
{
+ if (cpu_is_xlpii())
+ return 0;
+
pr_info("Initializing USB Interface\n");
nlm_usb_hw_reset(0, 0);
nlm_usb_hw_reset(0, 3);