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author | James <> | 2015-11-04 11:49:21 +0000 |
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committer | James <> | 2015-11-04 11:49:21 +0000 |
commit | 716ca530e1c4515d8683c9d5be3d56b301758b66 (patch) | |
tree | 700eb5bcc1a462a5f21dcec15ce7c97ecfefa772 /target/linux/mediatek/patches/0064-arm-mediatek-add-mt7623-pcie-support.patch | |
download | trunk-47381-716ca530e1c4515d8683c9d5be3d56b301758b66.tar.gz trunk-47381-716ca530e1c4515d8683c9d5be3d56b301758b66.tar.bz2 trunk-47381-716ca530e1c4515d8683c9d5be3d56b301758b66.zip |
Diffstat (limited to 'target/linux/mediatek/patches/0064-arm-mediatek-add-mt7623-pcie-support.patch')
-rw-r--r-- | target/linux/mediatek/patches/0064-arm-mediatek-add-mt7623-pcie-support.patch | 436 |
1 files changed, 436 insertions, 0 deletions
diff --git a/target/linux/mediatek/patches/0064-arm-mediatek-add-mt7623-pcie-support.patch b/target/linux/mediatek/patches/0064-arm-mediatek-add-mt7623-pcie-support.patch new file mode 100644 index 0000000..ee82f9c --- /dev/null +++ b/target/linux/mediatek/patches/0064-arm-mediatek-add-mt7623-pcie-support.patch @@ -0,0 +1,436 @@ +From 29ceb2449cb3622ccfba9eb1c77bf2ac4162464b Mon Sep 17 00:00:00 2001 +From: John Crispin <blogic@openwrt.org> +Date: Sat, 27 Jun 2015 13:15:29 +0200 +Subject: [PATCH 64/76] arm: mediatek: add mt7623 pcie support + +Signed-off-by: John Crispin <blogic@openwrt.org> +--- + arch/arm/mach-mediatek/Makefile | 2 +- + arch/arm/mach-mediatek/pcie.c | 383 +++++++++++++++++++++++++++++++++++++++ + arch/arm/mach-mediatek/pcie.h | 14 ++ + 3 files changed, 398 insertions(+), 1 deletion(-) + create mode 100644 arch/arm/mach-mediatek/pcie.c + create mode 100644 arch/arm/mach-mediatek/pcie.h + +diff --git a/arch/arm/mach-mediatek/Makefile b/arch/arm/mach-mediatek/Makefile +index 2116460..aca28a2 100644 +--- a/arch/arm/mach-mediatek/Makefile ++++ b/arch/arm/mach-mediatek/Makefile +@@ -1,4 +1,4 @@ + ifeq ($(CONFIG_SMP),y) + obj-$(CONFIG_ARCH_MEDIATEK) += platsmp.o + endif +-obj-$(CONFIG_ARCH_MEDIATEK) += mediatek.o ++obj-$(CONFIG_ARCH_MEDIATEK) += mediatek.o pcie.o +diff --git a/arch/arm/mach-mediatek/pcie.c b/arch/arm/mach-mediatek/pcie.c +new file mode 100644 +index 0000000..8394712 +--- /dev/null ++++ b/arch/arm/mach-mediatek/pcie.c +@@ -0,0 +1,383 @@ ++/* ++ * Mediatek MT7623 SoC PCIE support ++ * ++ * Copyright (C) 2015 Mediatek ++ * Copyright (C) 2015 John Crispin <blogic@openwrt.org> ++ * ++ * 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/kernel.h> ++#include <linux/pci.h> ++#include <linux/ioport.h> ++#include <linux/interrupt.h> ++#include <linux/spinlock.h> ++#include <linux/init.h> ++#include <linux/io.h> ++#include <linux/delay.h> ++#include <asm/irq.h> ++#include <asm/mach/pci.h> ++#include <linux/module.h> ++#include <linux/of.h> ++#include <linux/of_irq.h> ++#include <linux/of_pci.h> ++#include <linux/reset.h> ++#include <linux/platform_device.h> ++ ++#include "pcie.h" ++ ++#define PCICFG 0x00 ++#define PCIINT 0x08 ++#define PCIENA 0x0C ++#define CFGADDR 0x20 ++#define CFGDATA 0x24 ++#define MEMBASE 0x28 ++#define IOBASE 0x2C ++ ++#define BAR0SETUP 0x10 ++#define IMBASEBAR0 0x18 ++#define PCIE_CLASS 0x34 ++#define PCIE_SISTAT 0x50 ++ ++#define MTK_PCIE_HIGH_PERF BIT(14) ++#define PCIEP0_BASE 0x2000 ++#define PCIEP1_BASE 0x3000 ++#define PCIEP2_BASE 0x4000 ++ ++#define PHY_P0_CTL 0x9000 ++#define PHY_P1_CTL 0xA000 ++#define PHY_P2_CTL 0x4000 ++ ++#define RSTCTL_PCIE0_RST BIT(24) ++#define RSTCTL_PCIE1_RST BIT(25) ++#define RSTCTL_PCIE2_RST BIT(26) ++ ++static void __iomem *pcie_base; ++static int pcie_card_link; ++ ++static struct mtk_pcie_port { ++ int id; ++ int enable; ++ u32 base; ++ u32 phy_base; ++ u32 perst_n; ++ u32 reset; ++ u32 interrupt; ++ u32 link; ++} mtk_pcie_port[] = { ++ { 0, 1, PCIEP0_BASE, PHY_P0_CTL, BIT(1), RSTCTL_PCIE0_RST, BIT(20) }, ++ { 1, 1, PCIEP1_BASE, PHY_P1_CTL, BIT(2), RSTCTL_PCIE1_RST, BIT(21) }, ++ { 2, 0, PCIEP2_BASE, PHY_P2_CTL, BIT(3), RSTCTL_PCIE2_RST, BIT(22) }, ++}; ++ ++#define mtk_foreach_port(p) \ ++ for (p = mtk_pcie_port; p != &mtk_pcie_port[ARRAY_SIZE(mtk_pcie_port)]; p++) ++ ++#define mtk_foreach_port_enabled(p) \ ++ mtk_foreach_port(p) \ ++ if (p->enable) ++ ++#define mtk_foreach_port_link(p) \ ++ mtk_foreach_port(p) \ ++ if (p->link) ++ ++static struct mtk_phy_init { ++ uint32_t reg; ++ uint32_t mask; ++ uint32_t val; ++} mtk_phy_init[] = { ++ { 0xC00, 0x33000, 0x22000 }, ++ { 0xB04, 0xe0000000, 0x40000000 }, ++ { 0xB00, 0xe, 0x4 }, ++ { 0xC3C, 0xffff0000, 0x3c0000 }, ++ { 0xC48, 0xffff, 0x36 }, ++ { 0xC0C, 0x30000000, 0x10000000 }, ++ { 0xC08, 0x3800c0, 0xc0 }, ++ { 0xC10, 0xf0000, 0x20000 }, ++ { 0xC0C, 0xf000, 0x1000 }, ++ { 0xC14, 0xf0000, 0xa0000 }, ++}; ++ ++static inline void pcie_w32(u32 val, unsigned reg) ++{ ++ iowrite32(val, pcie_base + reg); ++} ++ ++static inline u32 pcie_r32(unsigned reg) ++{ ++ return ioread32(pcie_base + reg); ++} ++ ++static inline void pcie_m32(u32 mask, u32 val, unsigned reg) ++{ ++ u32 v = pcie_r32(reg); ++ ++ v &= mask; ++ v |= val; ++ pcie_w32(v, reg); ++} ++ ++static int pcie_config_read(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 * val) ++{ ++ unsigned int slot = PCI_SLOT(devfn); ++ u8 func = PCI_FUNC(devfn); ++ u32 address; ++ u32 data; ++ u32 num = 0; ++ ++ if (bus) ++ num = bus->number; ++ ++ address = (((where & 0xF00) >> 8) << 24) | (num << 16) | (slot << 11) | (func << 8) | (where & 0xfc); ++ pcie_m32(0xf0000000, address, CFGADDR); ++ data = pcie_r32(CFGDATA); ++ ++ 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 pcie_config_write(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val) ++{ ++ unsigned int slot = PCI_SLOT(devfn); ++ u8 func = PCI_FUNC(devfn); ++ u32 address; ++ u32 data; ++ u32 num = 0; ++ ++ if (bus) ++ num = bus->number; ++ ++ address = (((where & 0xF00) >> 8) << 24) | (num << 16) | (slot << 11) | (func << 8) | (where & 0xfc); ++ pcie_m32(0xf0000000, address, CFGADDR); ++ data = pcie_r32(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; ++ } ++ ++ pcie_w32(data, CFGDATA); ++ ++ return PCIBIOS_SUCCESSFUL; ++} ++ ++static struct pci_ops mtk_pcie_ops = { ++ .read = pcie_config_read, ++ .write = pcie_config_write, ++}; ++ ++static struct resource pci_mem = { ++ .name = "PCIe Memory space", ++ .start = MEM_DIRECT1, ++ .end = (u32) (MEM_DIRECT1 + (unsigned char *) 0x0fffffff), ++ .flags = IORESOURCE_MEM, ++}; ++ ++static struct resource pci_io = { ++ .name = "PCIe IO space", ++ .start = IO_WIN, ++ .end = (u32) (IO_WIN + (unsigned char *) 0x0ffff), ++ .flags = IORESOURCE_IO, ++}; ++ ++static int __init mtk_pcie_setup(int nr, struct pci_sys_data *sys) ++{ ++ sys->mem_offset = 0; ++ sys->io_offset = 0; ++ ++ request_resource(&ioport_resource, &pci_io); ++ request_resource(&iomem_resource, &pci_mem); ++ ++ pci_add_resource_offset(&sys->resources, &pci_io, sys->io_offset); ++ pci_add_resource_offset(&sys->resources, &pci_mem, sys->mem_offset); ++ ++ return 1; ++} ++ ++static struct pci_bus * __init mtk_pcie_scan_bus(int nr, struct pci_sys_data *sys) ++{ ++ return pci_scan_root_bus(NULL, sys->busnr, &mtk_pcie_ops, sys, ++ &sys->resources); ++} ++ ++static int __init mtk_pcie_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) ++{ ++ u16 cmd; ++ u32 val; ++ ++ if (dev->bus->number == 0) { ++ pcie_config_write(NULL, slot, 0, PCI_BASE_ADDRESS_0, MEMORY_BASE); ++ pcie_config_read(NULL, slot, 0, PCI_BASE_ADDRESS_0, &val); ++ printk("BAR0 at bus %d, slot %d\n", dev->bus->number, slot); ++ } ++ ++ printk("bus=0x%x, slot = 0x%x, pin=0x%x, irq=0x%x\n", dev->bus->number, slot, pin, dev->irq); ++ ++ pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, 0x14); ++ pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0xFF); ++ pci_read_config_word(dev, PCI_COMMAND, &cmd); ++ cmd = cmd | PCI_COMMAND_MASTER | PCI_COMMAND_IO | PCI_COMMAND_MEMORY; ++ pci_write_config_word(dev, PCI_COMMAND, cmd); ++ pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq); ++ ++ return dev->irq; ++} ++ ++static void __init mtk_pcie_preinit(void) ++{ ++ struct mtk_pcie_port *port; ++ u32 val = 0; ++ int i; ++ ++ pcibios_min_io = 0; ++ pcibios_min_mem = 0; ++ ++#if defined (CONFIG_PCIE_PORT2) ++ printk("%s: PCIe/USB3 combo PHY mode (%x) =%x\n", __func__, SYSCFG1, REGDATA(SYSCFG1)); ++ REGDATA(SYSCFG1) &= ~(0x300000); ++ printk("%s: PCIe/USB3 combo PHY mode (%x) =%x\n", __func__, SYSCFG1, REGDATA(SYSCFG1)); ++#endif ++ ++ /* PCIe RC Reset */ ++ val = 0; ++ mtk_foreach_port_enabled(port) ++ val |= port->reset; ++ REGDATA(RSTCTL) |= val; ++ mdelay(10); ++ REGDATA(RSTCTL) &= ~val; ++ mdelay(10); ++ ++ /* Configure PCIe PHY */ ++ mtk_foreach_port_enabled(port) { ++ for (i = 0; i < ARRAY_SIZE(mtk_phy_init); i++) { ++ u32 val = pcie_r32(port->phy_base + mtk_phy_init[i].reg); ++ val &= ~mtk_phy_init[i].mask; ++ val |= mtk_phy_init[i].val; ++ pcie_w32(val, port->phy_base + mtk_phy_init[i].reg); ++ } ++ mdelay(10); ++ } ++ ++ /* Enable RC */ ++ mtk_foreach_port_enabled(port) { ++ val = 0; ++ pcie_config_read(NULL, port->id, 0, 0x73c, &val); ++ val &= ~(0x9fff)<<16; ++ val |= 0x806c<<16; ++ pcie_config_write(NULL, port->id, 0, 0x73c, val); ++ } ++ ++ /* PCIe EP reset */ ++ val = 0; ++ mtk_foreach_port_enabled(port) ++ val |= port->perst_n; ++ val |= MTK_PCIE_HIGH_PERF; ++ pcie_w32(pcie_r32(PCICFG) | val, PCICFG); ++ mdelay(10); ++ pcie_w32(pcie_r32(PCICFG) & ~val, PCICFG); ++ mdelay(10); ++ ++ /* check the link status */ ++ val = 0; ++ mtk_foreach_port_enabled(port) { ++ if ((pcie_r32(port->base + PCIE_SISTAT) & 0x1)) ++ port->link = 1; ++ else ++ val |= port->reset; ++ } ++ REGDATA(RSTCTL) |= val; ++ ++ mtk_foreach_port_link(port) ++ pcie_card_link++; ++ ++ printk("PCIe Link count = %d\n", pcie_card_link); ++ if (!pcie_card_link) ++ return; ++ ++ pcie_w32(MEM_WIN, MEMBASE); ++ pcie_w32(IO_WIN, IOBASE); ++ ++ mtk_foreach_port_link(port) { ++ pcie_m32(0, port->interrupt, PCIENA); ++ pcie_w32(0x7FFF0001, port->base + BAR0SETUP); ++ pcie_w32(MEMORY_BASE, port->base + IMBASEBAR0); ++ pcie_w32(0x06040001, port->base + PCIE_CLASS); ++ printk("PCIE%d Setup OK\n", port->id); ++ } ++ val = 0; ++ ++ pcie_config_read(NULL, pcie_card_link - 1, 0, 0x4, &val); ++ pcie_config_write(NULL, pcie_card_link - 1, 0, 0x4, val|0x4); ++ pcie_config_read(NULL, pcie_card_link - 1, 0, 0x70c, &val); ++ val &= ~(0xff3) << 8; ++ val |= 0x50 << 8; ++ pcie_config_write(NULL, pcie_card_link - 1, 0, 0x70c, val); ++ pcie_config_read(NULL, pcie_card_link - 1, 0, 0x70c, &val); ++} ++ ++static struct hw_pci mtk_pci __initdata = { ++ .nr_controllers = 1, ++ .map_irq = mtk_pcie_map_irq, ++ .setup = mtk_pcie_setup, ++ .scan = mtk_pcie_scan_bus, ++ .preinit = mtk_pcie_preinit, ++}; ++ ++extern void mt7623_ethifsys_init(void); ++static int mtk_pcie_probe(struct platform_device *pdev) ++{ ++ struct resource *pcie_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); ++ ++ pcie_base = devm_ioremap_resource(&pdev->dev, pcie_res); ++ if (!pcie_base) ++ return -ENOMEM; ++ ++ mt7623_ethifsys_init(); ++ pci_common_init_dev(&pdev->dev, &mtk_pci); ++ ++ return 0; ++} ++ ++static const struct of_device_id mtk_pcie_ids[] = { ++ { .compatible = "mediatek,mt7623-pcie" }, ++ {}, ++}; ++MODULE_DEVICE_TABLE(of, mtk_pcie_ids); ++ ++static struct platform_driver mtk_pcie_driver = { ++ .probe = mtk_pcie_probe, ++ .driver = { ++ .name = "mt7623-pcie", ++ .owner = THIS_MODULE, ++ .of_match_table = of_match_ptr(mtk_pcie_ids), ++ }, ++}; ++ ++static int __init mtk_pcie_init(void) ++{ ++ return platform_driver_register(&mtk_pcie_driver); ++} ++ ++late_initcall(mtk_pcie_init); +diff --git a/arch/arm/mach-mediatek/pcie.h b/arch/arm/mach-mediatek/pcie.h +new file mode 100644 +index 0000000..400a760e +--- /dev/null ++++ b/arch/arm/mach-mediatek/pcie.h +@@ -0,0 +1,14 @@ ++#define SYSCTL_BASE 0xFA000000 ++#define MEM_WIN 0x1A150000 ++#define IO_WIN 0x1A160000 ++#define MEM_DIRECT1 0x60000000 ++#define MEMORY_BASE 0x80000000 ++ ++#define REGADDR(x, y) (x##_BASE + y) ++#define REGDATA(x) *((volatile unsigned int *)(x)) ++ ++#define SYSCFG1 REGADDR(SYSCTL, 0x14) ++#define RSTCTL REGADDR(SYSCTL, 0x34) ++ ++ ++ +-- +1.7.10.4 + |