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-rw-r--r--target/linux/ramips/patches-3.8/0063-PCI-MIPS-adds-rt3883-pci-support.patch688
1 files changed, 688 insertions, 0 deletions
diff --git a/target/linux/ramips/patches-3.8/0063-PCI-MIPS-adds-rt3883-pci-support.patch b/target/linux/ramips/patches-3.8/0063-PCI-MIPS-adds-rt3883-pci-support.patch
new file mode 100644
index 0000000000..c1c8f75f6e
--- /dev/null
+++ b/target/linux/ramips/patches-3.8/0063-PCI-MIPS-adds-rt3883-pci-support.patch
@@ -0,0 +1,688 @@
+From 5b942b64c01b57cbde0dff2185728d5a8facea76 Mon Sep 17 00:00:00 2001
+From: John Crispin <blogic@openwrt.org>
+Date: Thu, 21 Mar 2013 17:34:08 +0100
+Subject: [PATCH 63/79] PCI: MIPS: adds rt3883 pci support
+
+Add support for the pcie found on the rt3883 SoC.
+
+Signed-off-by: John Crispin <blogic@openwrt.org>
+---
+ arch/mips/pci/Makefile | 1 +
+ arch/mips/pci/pci-rt3883.c | 640 ++++++++++++++++++++++++++++++++++++++++++++
+ arch/mips/ralink/Kconfig | 1 +
+ 3 files changed, 642 insertions(+)
+ create mode 100644 arch/mips/pci/pci-rt3883.c
+
+diff --git a/arch/mips/pci/Makefile b/arch/mips/pci/Makefile
+index c7c18ce..a238158 100644
+--- a/arch/mips/pci/Makefile
++++ b/arch/mips/pci/Makefile
+@@ -43,6 +43,7 @@ obj-$(CONFIG_SNI_RM) += fixup-sni.o ops-sni.o
+ obj-$(CONFIG_LANTIQ) += fixup-lantiq.o
+ obj-$(CONFIG_PCI_LANTIQ) += pci-lantiq.o ops-lantiq.o
+ obj-$(CONFIG_SOC_RT2880) += pci-rt2880.o
++obj-$(CONFIG_SOC_RT3883) += pci-rt3883.o
+ obj-$(CONFIG_TANBAC_TB0219) += fixup-tb0219.o
+ obj-$(CONFIG_TANBAC_TB0226) += fixup-tb0226.o
+ obj-$(CONFIG_TANBAC_TB0287) += fixup-tb0287.o
+diff --git a/arch/mips/pci/pci-rt3883.c b/arch/mips/pci/pci-rt3883.c
+new file mode 100644
+index 0000000..212c90b
+--- /dev/null
++++ b/arch/mips/pci/pci-rt3883.c
+@@ -0,0 +1,640 @@
++/*
++ * Ralink RT3662/RT3883 SoC PCI support
++ *
++ * Copyright (C) 2011-2013 Gabor Juhos <juhosg@openwrt.org>
++ *
++ * Parts of this file are based on Ralink's 2.6.21 BSP
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published
++ * by the Free Software Foundation.
++ */
++
++#include <linux/types.h>
++#include <linux/pci.h>
++#include <linux/io.h>
++#include <linux/init.h>
++#include <linux/delay.h>
++#include <linux/interrupt.h>
++#include <linux/module.h>
++#include <linux/of.h>
++#include <linux/of_irq.h>
++#include <linux/of_pci.h>
++#include <linux/platform_device.h>
++
++#include <asm/mach-ralink/rt3883.h>
++#include <asm/mach-ralink/ralink_regs.h>
++
++#define RT3883_MEMORY_BASE 0x00000000
++#define RT3883_MEMORY_SIZE 0x02000000
++
++#define RT3883_PCI_REG_PCICFG 0x00
++#define RT3883_PCICFG_P2P_BR_DEVNUM_M 0xf
++#define RT3883_PCICFG_P2P_BR_DEVNUM_S 16
++#define RT3883_PCICFG_PCIRST BIT(1)
++#define RT3883_PCI_REG_PCIRAW 0x04
++#define RT3883_PCI_REG_PCIINT 0x08
++#define RT3883_PCI_REG_PCIENA 0x0c
++
++#define RT3883_PCI_REG_CFGADDR 0x20
++#define RT3883_PCI_REG_CFGDATA 0x24
++#define RT3883_PCI_REG_MEMBASE 0x28
++#define RT3883_PCI_REG_IOBASE 0x2c
++#define RT3883_PCI_REG_ARBCTL 0x80
++
++#define RT3883_PCI_REG_BASE(_x) (0x1000 + (_x) * 0x1000)
++#define RT3883_PCI_REG_BAR0SETUP(_x) (RT3883_PCI_REG_BASE((_x)) + 0x10)
++#define RT3883_PCI_REG_IMBASEBAR0(_x) (RT3883_PCI_REG_BASE((_x)) + 0x18)
++#define RT3883_PCI_REG_ID(_x) (RT3883_PCI_REG_BASE((_x)) + 0x30)
++#define RT3883_PCI_REG_CLASS(_x) (RT3883_PCI_REG_BASE((_x)) + 0x34)
++#define RT3883_PCI_REG_SUBID(_x) (RT3883_PCI_REG_BASE((_x)) + 0x38)
++#define RT3883_PCI_REG_STATUS(_x) (RT3883_PCI_REG_BASE((_x)) + 0x50)
++
++#define RT3883_PCI_MODE_NONE 0
++#define RT3883_PCI_MODE_PCI BIT(0)
++#define RT3883_PCI_MODE_PCIE BIT(1)
++#define RT3883_PCI_MODE_BOTH (RT3883_PCI_MODE_PCI | RT3883_PCI_MODE_PCIE)
++
++#define RT3883_PCI_IRQ_COUNT 32
++
++#define RT3883_P2P_BR_DEVNUM 1
++
++struct rt3883_pci_controller {
++ void __iomem *base;
++ spinlock_t lock;
++
++ struct irq_domain *irq_domain;
++
++ struct pci_controller pci_controller;
++ struct resource io_res;
++ struct resource mem_res;
++
++ bool pcie_ready;
++ unsigned char p2p_devnum;
++};
++
++static inline struct rt3883_pci_controller *
++pci_bus_to_rt3883_controller(struct pci_bus *bus)
++{
++ struct pci_controller *hose;
++
++ hose = (struct pci_controller *) bus->sysdata;
++ return container_of(hose, struct rt3883_pci_controller, pci_controller);
++}
++
++static inline u32 rt3883_pci_r32(struct rt3883_pci_controller *rpc,
++ unsigned reg)
++{
++ return ioread32(rpc->base + reg);
++}
++
++static inline void rt3883_pci_w32(struct rt3883_pci_controller *rpc,
++ u32 val, unsigned reg)
++{
++ iowrite32(val, rpc->base + reg);
++}
++
++static inline u32 rt3883_pci_get_cfgaddr(unsigned int bus, unsigned int slot,
++ unsigned int func, unsigned int where)
++{
++ return ((bus << 16) | (slot << 11) | (func << 8) | (where & 0xfc) |
++ 0x80000000);
++}
++
++static u32 rt3883_pci_read_cfg32(struct rt3883_pci_controller *rpc,
++ unsigned bus, unsigned slot,
++ unsigned func, unsigned reg)
++{
++ unsigned long flags;
++ u32 address;
++ u32 ret;
++
++ address = rt3883_pci_get_cfgaddr(bus, slot, func, reg);
++
++ spin_lock_irqsave(&rpc->lock, flags);
++ rt3883_pci_w32(rpc, address, RT3883_PCI_REG_CFGADDR);
++ ret = rt3883_pci_r32(rpc, RT3883_PCI_REG_CFGDATA);
++ spin_unlock_irqrestore(&rpc->lock, flags);
++
++ return ret;
++}
++
++static void rt3883_pci_write_cfg32(struct rt3883_pci_controller *rpc,
++ unsigned bus, unsigned slot,
++ unsigned func, unsigned reg, u32 val)
++{
++ unsigned long flags;
++ u32 address;
++
++ address = rt3883_pci_get_cfgaddr(bus, slot, func, reg);
++
++ spin_lock_irqsave(&rpc->lock, flags);
++ rt3883_pci_w32(rpc, address, RT3883_PCI_REG_CFGADDR);
++ rt3883_pci_w32(rpc, val, RT3883_PCI_REG_CFGDATA);
++ spin_unlock_irqrestore(&rpc->lock, flags);
++}
++
++static void rt3883_pci_irq_handler(unsigned int irq, struct irq_desc *desc)
++{
++ struct rt3883_pci_controller *rpc;
++ u32 pending;
++
++ rpc = irq_get_handler_data(irq);
++
++ pending = rt3883_pci_r32(rpc, RT3883_PCI_REG_PCIINT) &
++ rt3883_pci_r32(rpc, RT3883_PCI_REG_PCIENA);
++
++ if (!pending) {
++ spurious_interrupt();
++ return;
++ }
++
++ while (pending) {
++ unsigned bit = __ffs(pending);
++
++ irq = irq_find_mapping(rpc->irq_domain, bit);
++ generic_handle_irq(irq);
++
++ pending &= ~BIT(bit);
++ }
++}
++
++static void rt3883_pci_irq_unmask(struct irq_data *d)
++{
++ struct rt3883_pci_controller *rpc;
++ u32 t;
++
++ rpc = irq_data_get_irq_chip_data(d);
++
++ t = rt3883_pci_r32(rpc, RT3883_PCI_REG_PCIENA);
++ rt3883_pci_w32(rpc, t | BIT(d->hwirq), RT3883_PCI_REG_PCIENA);
++ /* flush write */
++ rt3883_pci_r32(rpc, RT3883_PCI_REG_PCIENA);
++}
++
++static void rt3883_pci_irq_mask(struct irq_data *d)
++{
++ struct rt3883_pci_controller *rpc;
++ u32 t;
++
++ rpc = irq_data_get_irq_chip_data(d);
++
++ t = rt3883_pci_r32(rpc, RT3883_PCI_REG_PCIENA);
++ rt3883_pci_w32(rpc, t & ~BIT(d->hwirq), RT3883_PCI_REG_PCIENA);
++ /* flush write */
++ rt3883_pci_r32(rpc, RT3883_PCI_REG_PCIENA);
++}
++
++static struct irq_chip rt3883_pci_irq_chip = {
++ .name = "RT3883 PCI",
++ .irq_mask = rt3883_pci_irq_mask,
++ .irq_unmask = rt3883_pci_irq_unmask,
++ .irq_mask_ack = rt3883_pci_irq_mask,
++};
++
++static int rt3883_pci_irq_map(struct irq_domain *d, unsigned int irq,
++ irq_hw_number_t hw)
++{
++ irq_set_chip_and_handler(irq, &rt3883_pci_irq_chip, handle_level_irq);
++ irq_set_chip_data(irq, d->host_data);
++
++ return 0;
++}
++
++static const struct irq_domain_ops rt3883_pci_irq_domain_ops = {
++ .map = rt3883_pci_irq_map,
++ .xlate = irq_domain_xlate_onecell,
++};
++
++static int rt3883_pci_irq_init(struct device *dev,
++ struct rt3883_pci_controller *rpc)
++{
++ struct device_node *np = dev->of_node;
++ struct device_node *intc_np;
++ int irq;
++ int err;
++
++ intc_np = of_get_child_by_name(np, "interrupt-controller");
++ if (!intc_np) {
++ dev_err(dev, "no %s child node found", "interrupt-controller");
++ return -ENODEV;
++ }
++
++ irq = irq_of_parse_and_map(intc_np, 0);
++ if (irq == 0) {
++ dev_err(dev, "%s has no IRQ", of_node_full_name(intc_np));
++ err = -EINVAL;
++ goto err_put_intc;
++ }
++
++ /* disable all interrupts */
++ rt3883_pci_w32(rpc, 0, RT3883_PCI_REG_PCIENA);
++
++ rpc->irq_domain =
++ irq_domain_add_linear(intc_np, RT3883_PCI_IRQ_COUNT,
++ &rt3883_pci_irq_domain_ops,
++ rpc);
++ if (!rpc->irq_domain) {
++ dev_err(dev, "unable to add IRQ domain\n");
++ err = -ENODEV;
++ goto err_put_intc;
++ }
++
++ irq_set_handler_data(irq, rpc);
++ irq_set_chained_handler(irq, rt3883_pci_irq_handler);
++
++ return 0;
++
++err_put_intc:
++ of_node_put(intc_np);
++ return err;
++}
++
++static int rt3883_pci_config_read(struct pci_bus *bus, unsigned int devfn,
++ int where, int size, u32 *val)
++{
++ struct rt3883_pci_controller *rpc;
++ unsigned long flags;
++ u32 address;
++ u32 data;
++
++ rpc = pci_bus_to_rt3883_controller(bus);
++
++ if (!rpc->pcie_ready && bus->number == 1)
++ return PCIBIOS_DEVICE_NOT_FOUND;
++
++ address = rt3883_pci_get_cfgaddr(bus->number, PCI_SLOT(devfn),
++ PCI_FUNC(devfn), where);
++
++ spin_lock_irqsave(&rpc->lock, flags);
++ rt3883_pci_w32(rpc, address, RT3883_PCI_REG_CFGADDR);
++ data = rt3883_pci_r32(rpc, RT3883_PCI_REG_CFGDATA);
++ spin_unlock_irqrestore(&rpc->lock, flags);
++
++ switch (size) {
++ case 1:
++ *val = (data >> ((where & 3) << 3)) & 0xff;
++ break;
++ case 2:
++ *val = (data >> ((where & 3) << 3)) & 0xffff;
++ break;
++ case 4:
++ *val = data;
++ break;
++ }
++
++ return PCIBIOS_SUCCESSFUL;
++}
++
++static int rt3883_pci_config_write(struct pci_bus *bus, unsigned int devfn,
++ int where, int size, u32 val)
++{
++ struct rt3883_pci_controller *rpc;
++ unsigned long flags;
++ u32 address;
++ u32 data;
++
++ rpc = pci_bus_to_rt3883_controller(bus);
++
++ if (!rpc->pcie_ready && bus->number == 1)
++ return PCIBIOS_DEVICE_NOT_FOUND;
++
++ address = rt3883_pci_get_cfgaddr(bus->number, PCI_SLOT(devfn),
++ PCI_FUNC(devfn), where);
++
++ spin_lock_irqsave(&rpc->lock, flags);
++ rt3883_pci_w32(rpc, address, RT3883_PCI_REG_CFGADDR);
++ data = rt3883_pci_r32(rpc, RT3883_PCI_REG_CFGDATA);
++
++ switch (size) {
++ case 1:
++ data = (data & ~(0xff << ((where & 3) << 3))) |
++ (val << ((where & 3) << 3));
++ break;
++ case 2:
++ data = (data & ~(0xffff << ((where & 3) << 3))) |
++ (val << ((where & 3) << 3));
++ break;
++ case 4:
++ data = val;
++ break;
++ }
++
++ rt3883_pci_w32(rpc, data, RT3883_PCI_REG_CFGDATA);
++ spin_unlock_irqrestore(&rpc->lock, flags);
++
++ return PCIBIOS_SUCCESSFUL;
++}
++
++static struct pci_ops rt3883_pci_ops = {
++ .read = rt3883_pci_config_read,
++ .write = rt3883_pci_config_write,
++};
++
++static void rt3883_pci_preinit(struct rt3883_pci_controller *rpc, unsigned mode)
++{
++ u32 syscfg1;
++ u32 rstctrl;
++ u32 clkcfg1;
++ u32 t;
++
++ rstctrl = rt_sysc_r32(RT3883_SYSC_REG_RSTCTRL);
++ syscfg1 = rt_sysc_r32(RT3883_SYSC_REG_SYSCFG1);
++ clkcfg1 = rt_sysc_r32(RT3883_SYSC_REG_CLKCFG1);
++
++ if (mode & RT3883_PCI_MODE_PCIE) {
++ rstctrl |= RT3883_RSTCTRL_PCIE;
++ rt_sysc_w32(rstctrl, RT3883_SYSC_REG_RSTCTRL);
++
++ /* setup PCI PAD drive mode */
++ syscfg1 &= ~(0x30);
++ syscfg1 |= (2 << 4);
++ rt_sysc_w32(syscfg1, RT3883_SYSC_REG_SYSCFG1);
++
++ t = rt_sysc_r32(RT3883_SYSC_REG_PCIE_CLK_GEN0);
++ t &= ~BIT(31);
++ rt_sysc_w32(t, RT3883_SYSC_REG_PCIE_CLK_GEN0);
++
++ t = rt_sysc_r32(RT3883_SYSC_REG_PCIE_CLK_GEN1);
++ t &= 0x80ffffff;
++ rt_sysc_w32(t, RT3883_SYSC_REG_PCIE_CLK_GEN1);
++
++ t = rt_sysc_r32(RT3883_SYSC_REG_PCIE_CLK_GEN1);
++ t |= 0xa << 24;
++ rt_sysc_w32(t, RT3883_SYSC_REG_PCIE_CLK_GEN1);
++
++ t = rt_sysc_r32(RT3883_SYSC_REG_PCIE_CLK_GEN0);
++ t |= BIT(31);
++ rt_sysc_w32(t, RT3883_SYSC_REG_PCIE_CLK_GEN0);
++
++ msleep(50);
++
++ rstctrl &= ~RT3883_RSTCTRL_PCIE;
++ rt_sysc_w32(rstctrl, RT3883_SYSC_REG_RSTCTRL);
++ }
++
++ syscfg1 |= (RT3883_SYSCFG1_PCIE_RC_MODE | RT3883_SYSCFG1_PCI_HOST_MODE);
++
++ clkcfg1 &= ~(RT3883_CLKCFG1_PCI_CLK_EN | RT3883_CLKCFG1_PCIE_CLK_EN);
++
++ if (mode & RT3883_PCI_MODE_PCI) {
++ clkcfg1 |= RT3883_CLKCFG1_PCI_CLK_EN;
++ rstctrl &= ~RT3883_RSTCTRL_PCI;
++ }
++
++ if (mode & RT3883_PCI_MODE_PCIE) {
++ clkcfg1 |= RT3883_CLKCFG1_PCIE_CLK_EN;
++ rstctrl &= ~RT3883_RSTCTRL_PCIE;
++ }
++
++ rt_sysc_w32(syscfg1, RT3883_SYSC_REG_SYSCFG1);
++ rt_sysc_w32(rstctrl, RT3883_SYSC_REG_RSTCTRL);
++ rt_sysc_w32(clkcfg1, RT3883_SYSC_REG_CLKCFG1);
++
++ msleep(500);
++
++ /*
++ * setup the device number of the P2P bridge
++ * and de-assert the reset line
++ */
++ t = (RT3883_P2P_BR_DEVNUM << RT3883_PCICFG_P2P_BR_DEVNUM_S);
++ rt3883_pci_w32(rpc, t, RT3883_PCI_REG_PCICFG);
++
++ /* flush write */
++ rt3883_pci_r32(rpc, RT3883_PCI_REG_PCICFG);
++ msleep(500);
++
++ if (mode & RT3883_PCI_MODE_PCIE) {
++ msleep(500);
++
++ t = rt3883_pci_r32(rpc, RT3883_PCI_REG_STATUS(1));
++
++ rpc->pcie_ready = t & BIT(0);
++
++ if (!rpc->pcie_ready) {
++ /* reset the PCIe block */
++ t = rt_sysc_r32(RT3883_SYSC_REG_RSTCTRL);
++ t |= RT3883_RSTCTRL_PCIE;
++ rt_sysc_w32(t, RT3883_SYSC_REG_RSTCTRL);
++ t &= ~RT3883_RSTCTRL_PCIE;
++ rt_sysc_w32(t, RT3883_SYSC_REG_RSTCTRL);
++
++ /* turn off PCIe clock */
++ t = rt_sysc_r32(RT3883_SYSC_REG_CLKCFG1);
++ t &= ~RT3883_CLKCFG1_PCIE_CLK_EN;
++ rt_sysc_w32(t, RT3883_SYSC_REG_CLKCFG1);
++
++ t = rt_sysc_r32(RT3883_SYSC_REG_PCIE_CLK_GEN0);
++ t &= ~0xf000c080;
++ rt_sysc_w32(t, RT3883_SYSC_REG_PCIE_CLK_GEN0);
++ }
++ }
++
++ /* enable PCI arbiter */
++ rt3883_pci_w32(rpc, 0x79, RT3883_PCI_REG_ARBCTL);
++}
++
++static inline void
++rt3883_dump_pci_config(struct rt3883_pci_controller *rpc,
++ int bus, int slot)
++{
++ int i;
++
++ for (i = 0; i < 16; i++) {
++ u32 val;
++
++ val = rt3883_pci_read_cfg32(rpc, bus, slot, 0, i << 2);
++ pr_info("pci %02x:%02x.0 0x%02x = %08x\n",
++ bus, slot, i << 2, val);
++ }
++}
++
++static int rt3883_pci_probe(struct platform_device *pdev)
++{
++ struct rt3883_pci_controller *rpc;
++ struct device *dev = &pdev->dev;
++ struct device_node *np = dev->of_node;
++ struct resource *res;
++ struct device_node *child;
++ u32 val;
++ int err;
++ int mode;
++
++ rpc = devm_kzalloc(dev, sizeof(*rpc), GFP_KERNEL);
++ if (!rpc)
++ return -ENOMEM;
++
++ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++ if (!res)
++ return -EINVAL;
++
++ rpc->base = devm_ioremap_resource(dev, res);
++ if (IS_ERR(rpc->base))
++ return PTR_ERR(rpc->base);
++
++ rpc->pci_controller.of_node = of_get_child_by_name(np, "host-bridge");
++ if (!rpc->pci_controller.of_node) {
++ dev_err(dev, "no %s child node found", "host-bridge");
++ return -ENODEV;
++ }
++
++ mode = RT3883_PCI_MODE_NONE;
++ for_each_child_of_node(rpc->pci_controller.of_node, child) {
++ u32 slot;
++
++ if (!of_device_is_available(child))
++ continue;
++
++ if (of_property_read_u32(child, "ralink,pci-slot",
++ &slot)) {
++ dev_err(dev, "no '%s' property found for %s\n",
++ "ralink,pci-slot",
++ of_node_full_name(child));
++ continue;
++ }
++
++ switch (slot) {
++ case 1:
++ mode |= RT3883_PCI_MODE_PCIE;
++ break;
++
++ case 17:
++ case 18:
++ mode |= RT3883_PCI_MODE_PCI;
++ break;
++ }
++ }
++
++ if (mode == RT3883_PCI_MODE_NONE) {
++ dev_err(dev, "unable to determine PCI mode\n");
++ err = -EINVAL;
++ goto err_put_hb_node;
++ }
++
++ dev_info(dev, "mode:%s%s\n",
++ (mode & RT3883_PCI_MODE_PCI) ? " PCI" : "",
++ (mode & RT3883_PCI_MODE_PCIE) ? " PCIe" : "");
++
++ rt3883_pci_preinit(rpc, mode);
++
++ rpc->pci_controller.pci_ops = &rt3883_pci_ops;
++ rpc->pci_controller.io_resource = &rpc->io_res;
++ rpc->pci_controller.mem_resource = &rpc->mem_res;
++
++ /* Load PCI I/O and memory resources from DT */
++ pci_load_of_ranges(&rpc->pci_controller,
++ rpc->pci_controller.of_node);
++
++ rt3883_pci_w32(rpc, rpc->mem_res.start, RT3883_PCI_REG_MEMBASE);
++ rt3883_pci_w32(rpc, rpc->io_res.start, RT3883_PCI_REG_IOBASE);
++
++ ioport_resource.start = rpc->io_res.start;
++ ioport_resource.end = rpc->io_res.end;
++
++ /* PCI */
++ rt3883_pci_w32(rpc, 0x03ff0000, RT3883_PCI_REG_BAR0SETUP(0));
++ rt3883_pci_w32(rpc, RT3883_MEMORY_BASE, RT3883_PCI_REG_IMBASEBAR0(0));
++ rt3883_pci_w32(rpc, 0x08021814, RT3883_PCI_REG_ID(0));
++ rt3883_pci_w32(rpc, 0x00800001, RT3883_PCI_REG_CLASS(0));
++ rt3883_pci_w32(rpc, 0x28801814, RT3883_PCI_REG_SUBID(0));
++
++ /* PCIe */
++ rt3883_pci_w32(rpc, 0x03ff0000, RT3883_PCI_REG_BAR0SETUP(1));
++ rt3883_pci_w32(rpc, RT3883_MEMORY_BASE, RT3883_PCI_REG_IMBASEBAR0(1));
++ rt3883_pci_w32(rpc, 0x08021814, RT3883_PCI_REG_ID(1));
++ rt3883_pci_w32(rpc, 0x06040001, RT3883_PCI_REG_CLASS(1));
++ rt3883_pci_w32(rpc, 0x28801814, RT3883_PCI_REG_SUBID(1));
++
++ err = rt3883_pci_irq_init(dev, rpc);
++ if (err)
++ goto err_put_hb_node;
++
++ /* PCIe */
++ val = rt3883_pci_read_cfg32(rpc, 0, 0x01, 0, PCI_COMMAND);
++ val |= PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER;
++ rt3883_pci_write_cfg32(rpc, 0, 0x01, 0, PCI_COMMAND, val);
++
++ /* PCI */
++ val = rt3883_pci_read_cfg32(rpc, 0, 0x00, 0, PCI_COMMAND);
++ val |= PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER;
++ rt3883_pci_write_cfg32(rpc, 0, 0x00, 0, PCI_COMMAND, val);
++
++ if (mode == RT3883_PCI_MODE_PCIE) {
++ rt3883_pci_w32(rpc, 0x03ff0001, RT3883_PCI_REG_BAR0SETUP(0));
++ rt3883_pci_w32(rpc, 0x03ff0001, RT3883_PCI_REG_BAR0SETUP(1));
++
++ rt3883_pci_write_cfg32(rpc, 0, RT3883_P2P_BR_DEVNUM, 0,
++ PCI_BASE_ADDRESS_0,
++ RT3883_MEMORY_BASE);
++ /* flush write */
++ rt3883_pci_read_cfg32(rpc, 0, RT3883_P2P_BR_DEVNUM, 0,
++ PCI_BASE_ADDRESS_0);
++ } else {
++ rt3883_pci_write_cfg32(rpc, 0, RT3883_P2P_BR_DEVNUM, 0,
++ PCI_IO_BASE, 0x00000101);
++ }
++
++ register_pci_controller(&rpc->pci_controller);
++
++ return 0;
++
++err_put_hb_node:
++ of_node_put(rpc->pci_controller.of_node);
++ return err;
++}
++
++int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
++{
++ struct rt3883_pci_controller *rpc;
++ struct of_irq dev_irq;
++ int err;
++ int irq;
++
++ rpc = pci_bus_to_rt3883_controller(dev->bus);
++ err = of_irq_map_pci(dev, &dev_irq);
++ if (err) {
++ pr_err("pci %s: unable to get irq map, err=%d\n",
++ pci_name((struct pci_dev *) dev), err);
++ return 0;
++ }
++
++ irq = irq_create_of_mapping(dev_irq.controller,
++ dev_irq.specifier,
++ dev_irq.size);
++
++ if (irq == 0)
++ pr_crit("pci %s: no irq found for pin %u\n",
++ pci_name((struct pci_dev *) dev), pin);
++ else
++ pr_info("pci %s: using irq %d for pin %u\n",
++ pci_name((struct pci_dev *) dev), irq, pin);
++
++ return irq;
++}
++
++int pcibios_plat_dev_init(struct pci_dev *dev)
++{
++ return 0;
++}
++
++static const struct of_device_id rt3883_pci_ids[] = {
++ { .compatible = "ralink,rt3883-pci" },
++ {},
++};
++MODULE_DEVICE_TABLE(of, rt3883_pci_ids);
++
++static struct platform_driver rt3883_pci_driver = {
++ .probe = rt3883_pci_probe,
++ .driver = {
++ .name = "rt3883-pci",
++ .owner = THIS_MODULE,
++ .of_match_table = of_match_ptr(rt3883_pci_ids),
++ },
++};
++
++static int __init rt3883_pci_init(void)
++{
++ return platform_driver_register(&rt3883_pci_driver);
++}
++
++postcore_initcall(rt3883_pci_init);
+diff --git a/arch/mips/ralink/Kconfig b/arch/mips/ralink/Kconfig
+index 2d39329..f2f20ec 100644
+--- a/arch/mips/ralink/Kconfig
++++ b/arch/mips/ralink/Kconfig
+@@ -20,6 +20,7 @@ choice
+ bool "RT3883"
+ select USB_ARCH_HAS_OHCI
+ select USB_ARCH_HAS_EHCI
++ select HW_HAS_PCI
+
+ config SOC_MT7620
+ bool "MT7620"
+--
+1.7.10.4
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-12 23:23:46 +0000