| /* |
| * 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/pci_ids.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(cpu_is_xlp9xx() ? \ |
| XLP9XX_IO_USB_OFFSET(node, inst) : \ |
| 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 xlp2xx_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 xlp9xx_usb_ack(struct irq_data *data) |
| { |
| u64 port_addr; |
| int node, irq; |
| |
| /* Find the node and irq on the node */ |
| irq = data->irq % NLM_IRQS_PER_NODE; |
| node = data->irq / NLM_IRQS_PER_NODE; |
| |
| switch (irq) { |
| case PIC_9XX_XHCI_0_IRQ: |
| port_addr = nlm_xlpii_get_usb_regbase(node, 1); |
| break; |
| case PIC_9XX_XHCI_1_IRQ: |
| port_addr = nlm_xlpii_get_usb_regbase(node, 2); |
| break; |
| case PIC_9XX_XHCI_2_IRQ: |
| port_addr = nlm_xlpii_get_usb_regbase(node, 3); |
| break; |
| default: |
| pr_err("No matching USB irq %d node %d!\n", irq, node); |
| 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) |
| { |
| int node; |
| |
| if (!cpu_is_xlpii()) |
| return 0; |
| |
| if (!cpu_is_xlp9xx()) { |
| /* XLP 2XX single node */ |
| 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, xlp2xx_usb_ack); |
| nlm_set_pic_extra_ack(0, PIC_2XX_XHCI_1_IRQ, xlp2xx_usb_ack); |
| nlm_set_pic_extra_ack(0, PIC_2XX_XHCI_2_IRQ, xlp2xx_usb_ack); |
| return 0; |
| } |
| |
| /* XLP 9XX, multi-node */ |
| pr_info("Initializing 9XX/5XX USB Interface\n"); |
| for (node = 0; node < NLM_NR_NODES; node++) { |
| if (!nlm_node_present(node)) |
| continue; |
| nlm_xlpii_usb_hw_reset(node, 1); |
| nlm_xlpii_usb_hw_reset(node, 2); |
| nlm_xlpii_usb_hw_reset(node, 3); |
| nlm_set_pic_extra_ack(node, PIC_9XX_XHCI_0_IRQ, xlp9xx_usb_ack); |
| nlm_set_pic_extra_ack(node, PIC_9XX_XHCI_1_IRQ, xlp9xx_usb_ack); |
| nlm_set_pic_extra_ack(node, PIC_9XX_XHCI_2_IRQ, xlp9xx_usb_ack); |
| } |
| return 0; |
| } |
| |
| arch_initcall(nlm_platform_xlpii_usb_init); |
| |
| static u64 xlp_usb_dmamask = ~(u32)0; |
| |
| /* Fixup the IRQ for USB devices which is exist on XLP9XX SOC PCIE bus */ |
| static void nlm_xlp9xx_usb_fixup_final(struct pci_dev *dev) |
| { |
| int node; |
| |
| node = xlp_socdev_to_node(dev); |
| dev->dev.dma_mask = &xlp_usb_dmamask; |
| dev->dev.coherent_dma_mask = DMA_BIT_MASK(32); |
| switch (dev->devfn) { |
| case 0x21: |
| dev->irq = nlm_irq_to_xirq(node, PIC_9XX_XHCI_0_IRQ); |
| break; |
| case 0x22: |
| dev->irq = nlm_irq_to_xirq(node, PIC_9XX_XHCI_1_IRQ); |
| break; |
| case 0x23: |
| dev->irq = nlm_irq_to_xirq(node, PIC_9XX_XHCI_2_IRQ); |
| break; |
| } |
| } |
| |
| /* Fixup the IRQ for USB devices which is exist on XLP2XX SOC PCIE bus */ |
| static void nlm_xlp2xx_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_ID_BROADCOM, PCI_DEVICE_ID_XLP9XX_XHCI, |
| nlm_xlp9xx_usb_fixup_final); |
| DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_NETLOGIC, PCI_DEVICE_ID_NLM_XHCI, |
| nlm_xlp2xx_usb_fixup_final); |