diff options
Diffstat (limited to 'target/linux/lantiq/patches/260-pci.patch')
-rw-r--r-- | target/linux/lantiq/patches/260-pci.patch | 436 |
1 files changed, 436 insertions, 0 deletions
diff --git a/target/linux/lantiq/patches/260-pci.patch b/target/linux/lantiq/patches/260-pci.patch new file mode 100644 index 000000000..d086b25e8 --- /dev/null +++ b/target/linux/lantiq/patches/260-pci.patch @@ -0,0 +1,436 @@ +--- a/arch/mips/pci/Makefile ++++ b/arch/mips/pci/Makefile +@@ -55,6 +55,7 @@ obj-$(CONFIG_ZAO_CAPCELLA) += fixup-capc + obj-$(CONFIG_WR_PPMC) += fixup-wrppmc.o + obj-$(CONFIG_MIKROTIK_RB532) += pci-rc32434.o ops-rc32434.o fixup-rc32434.o + obj-$(CONFIG_CPU_CAVIUM_OCTEON) += pci-octeon.o pcie-octeon.o ++obj-$(CONFIG_LANTIQ) += pci-lantiq.o ops-lantiq.o + + ifdef CONFIG_PCI_MSI + obj-$(CONFIG_CPU_CAVIUM_OCTEON) += msi-octeon.o +--- /dev/null ++++ b/arch/mips/pci/ops-lantiq.c +@@ -0,0 +1,127 @@ ++/* ++ * 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. ++ * ++ * Copyright (C) 2010 John Crispin <blogic@openwrt.org> ++ */ ++ ++#include <linux/types.h> ++#include <linux/pci.h> ++#include <linux/kernel.h> ++#include <linux/init.h> ++#include <linux/delay.h> ++#include <linux/mm.h> ++#include <asm/addrspace.h> ++#include <linux/vmalloc.h> ++ ++#include <xway.h> ++ ++#define LQ_PCI_CFG_BUSNUM_SHF 16 ++#define LQ_PCI_CFG_DEVNUM_SHF 11 ++#define LQ_PCI_CFG_FUNNUM_SHF 8 ++ ++#define PCI_ACCESS_READ 0 ++#define PCI_ACCESS_WRITE 1 ++ ++extern u32 lq_pci_mapped_cfg; ++ ++static int ++lq_pci_config_access(unsigned char access_type, ++ struct pci_bus *bus, unsigned int devfn, unsigned int where, u32 *data) ++{ ++ unsigned long cfg_base; ++ unsigned long flags; ++ ++ u32 temp; ++ ++ /* we support slot from 0 to 15 */ ++ /* dev_fn 0&0x68 (AD29) is ifxmips itself */ ++ if ((bus->number != 0) || ((devfn & 0xf8) > 0x78) ++ || ((devfn & 0xf8) == 0) || ((devfn & 0xf8) == 0x68)) ++ return 1; ++ ++ spin_lock_irqsave(&ebu_lock, flags); ++ ++ cfg_base = lq_pci_mapped_cfg; ++ cfg_base |= (bus->number << LQ_PCI_CFG_BUSNUM_SHF) | (devfn << ++ LQ_PCI_CFG_FUNNUM_SHF) | (where & ~0x3); ++ ++ /* Perform access */ ++ if (access_type == PCI_ACCESS_WRITE) ++ { ++#ifdef CONFIG_SWAP_IO_SPACE ++ lq_w32(swab32(*data), ((u32*)cfg_base)); ++#else ++ lq_w32(*data, ((u32*)cfg_base)); ++#endif ++ } else { ++ *data = lq_r32(((u32*)(cfg_base))); ++#ifdef CONFIG_SWAP_IO_SPACE ++ *data = swab32(*data); ++#endif ++ } ++ wmb(); ++ ++ /* clean possible Master abort */ ++ cfg_base = (lq_pci_mapped_cfg | (0x0 << LQ_PCI_CFG_FUNNUM_SHF)) + 4; ++ temp = lq_r32(((u32*)(cfg_base))); ++#ifdef CONFIG_SWAP_IO_SPACE ++ temp = swab32 (temp); ++#endif ++ cfg_base = (lq_pci_mapped_cfg | (0x68 << LQ_PCI_CFG_FUNNUM_SHF)) + 4; ++ lq_w32(temp, ((u32*)cfg_base)); ++ ++ spin_unlock_irqrestore(&ebu_lock, flags); ++ ++ if (((*data) == 0xffffffff) && (access_type == PCI_ACCESS_READ)) ++ return 1; ++ ++ return 0; ++} ++ ++int ++lq_pci_read_config_dword(struct pci_bus *bus, unsigned int devfn, ++ int where, int size, u32 * val) ++{ ++ u32 data = 0; ++ ++ if (lq_pci_config_access(PCI_ACCESS_READ, bus, devfn, where, &data)) ++ return PCIBIOS_DEVICE_NOT_FOUND; ++ ++ if (size == 1) ++ *val = (data >> ((where & 3) << 3)) & 0xff; ++ else if (size == 2) ++ *val = (data >> ((where & 3) << 3)) & 0xffff; ++ else ++ *val = data; ++ ++ return PCIBIOS_SUCCESSFUL; ++} ++ ++int ++lq_pci_write_config_dword(struct pci_bus *bus, unsigned int devfn, ++ int where, int size, u32 val) ++{ ++ u32 data = 0; ++ ++ if (size == 4) ++ { ++ data = val; ++ } else { ++ if (lq_pci_config_access(PCI_ACCESS_READ, bus, devfn, where, &data)) ++ return PCIBIOS_DEVICE_NOT_FOUND; ++ ++ if (size == 1) ++ data = (data & ~(0xff << ((where & 3) << 3))) | ++ (val << ((where & 3) << 3)); ++ else if (size == 2) ++ data = (data & ~(0xffff << ((where & 3) << 3))) | ++ (val << ((where & 3) << 3)); ++ } ++ ++ if (lq_pci_config_access(PCI_ACCESS_WRITE, bus, devfn, where, &data)) ++ return PCIBIOS_DEVICE_NOT_FOUND; ++ ++ return PCIBIOS_SUCCESSFUL; ++} +--- /dev/null ++++ b/arch/mips/pci/pci-lantiq.c +@@ -0,0 +1,293 @@ ++/* ++ * 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. ++ * ++ * Copyright (C) 2010 John Crispin <blogic@openwrt.org> ++ */ ++ ++#include <linux/types.h> ++#include <linux/pci.h> ++#include <linux/kernel.h> ++#include <linux/init.h> ++#include <linux/delay.h> ++#include <linux/mm.h> ++#include <linux/vmalloc.h> ++#include <linux/platform_device.h> ++ ++#include <asm/gpio.h> ++#include <asm/addrspace.h> ++ ++#include <xway.h> ++#include <xway_irq.h> ++#include <lantiq_platform.h> ++ ++#define LQ_PCI_CFG_BASE 0x17000000 ++#define LQ_PCI_CFG_SIZE 0x00008000 ++#define LQ_PCI_MEM_BASE 0x18000000 ++#define LQ_PCI_MEM_SIZE 0x02000000 ++#define LQ_PCI_IO_BASE 0x1AE00000 ++#define LQ_PCI_IO_SIZE 0x00200000 ++ ++#define PCI_CR_FCI_ADDR_MAP0 ((u32 *)(PCI_CR_PR_BASE_ADDR + 0x00C0)) ++#define PCI_CR_FCI_ADDR_MAP1 ((u32 *)(PCI_CR_PR_BASE_ADDR + 0x00C4)) ++#define PCI_CR_FCI_ADDR_MAP2 ((u32 *)(PCI_CR_PR_BASE_ADDR + 0x00C8)) ++#define PCI_CR_FCI_ADDR_MAP3 ((u32 *)(PCI_CR_PR_BASE_ADDR + 0x00CC)) ++#define PCI_CR_FCI_ADDR_MAP4 ((u32 *)(PCI_CR_PR_BASE_ADDR + 0x00D0)) ++#define PCI_CR_FCI_ADDR_MAP5 ((u32 *)(PCI_CR_PR_BASE_ADDR + 0x00D4)) ++#define PCI_CR_FCI_ADDR_MAP6 ((u32 *)(PCI_CR_PR_BASE_ADDR + 0x00D8)) ++#define PCI_CR_FCI_ADDR_MAP7 ((u32 *)(PCI_CR_PR_BASE_ADDR + 0x00DC)) ++#define PCI_CR_CLK_CTRL ((u32 *)(PCI_CR_PR_BASE_ADDR + 0x0000)) ++#define PCI_CR_PCI_MOD ((u32 *)(PCI_CR_PR_BASE_ADDR + 0x0030)) ++#define PCI_CR_PC_ARB ((u32 *)(PCI_CR_PR_BASE_ADDR + 0x0080)) ++#define PCI_CR_FCI_ADDR_MAP11hg ((u32 *)(PCI_CR_PR_BASE_ADDR + 0x00E4)) ++#define PCI_CR_BAR11MASK ((u32 *)(PCI_CR_PR_BASE_ADDR + 0x0044)) ++#define PCI_CR_BAR12MASK ((u32 *)(PCI_CR_PR_BASE_ADDR + 0x0048)) ++#define PCI_CR_BAR13MASK ((u32 *)(PCI_CR_PR_BASE_ADDR + 0x004C)) ++#define PCI_CS_BASE_ADDR1 ((u32 *)(PCI_CS_PR_BASE_ADDR + 0x0010)) ++#define PCI_CR_PCI_ADDR_MAP11 ((u32 *)(PCI_CR_PR_BASE_ADDR + 0x0064)) ++#define PCI_CR_FCI_BURST_LENGTH ((u32 *)(PCI_CR_PR_BASE_ADDR + 0x00E8)) ++#define PCI_CR_PCI_EOI ((u32 *)(PCI_CR_PR_BASE_ADDR + 0x002C)) ++ ++ ++#define PCI_CS_STS_CMD ((u32 *)(PCI_CS_PR_BASE_ADDR + 0x0004)) ++ ++#define PCI_MASTER0_REQ_MASK_2BITS 8 ++#define PCI_MASTER1_REQ_MASK_2BITS 10 ++#define PCI_MASTER2_REQ_MASK_2BITS 12 ++#define INTERNAL_ARB_ENABLE_BIT 0 ++ ++#define LQ_CGU_IFCCR ((u32 *)(LQ_CGU_BASE_ADDR + 0x0018)) ++#define LQ_CGU_PCICR ((u32 *)(LQ_CGU_BASE_ADDR + 0x0034)) ++ ++extern int lq_pci_read_config_dword(struct pci_bus *bus, ++ unsigned int devfn, int where, int size, u32 *val); ++extern int lq_pci_write_config_dword(struct pci_bus *bus, ++ unsigned int devfn, int where, int size, u32 val); ++ ++u32 lq_pci_mapped_cfg; ++ ++/* Since the PCI REQ pins can be reused for other functionality, make it possible ++ to exclude those from interpretation by the PCI controller */ ++static int lq_pci_req_mask = 0xf; ++ ++struct pci_ops lq_pci_ops = ++{ ++ .read = lq_pci_read_config_dword, ++ .write = lq_pci_write_config_dword ++}; ++ ++static struct resource pci_io_resource = ++{ ++ .name = "pci io space", ++ .start = LQ_PCI_IO_BASE, ++ .end = LQ_PCI_IO_BASE + LQ_PCI_IO_SIZE - 1, ++ .flags = IORESOURCE_IO ++}; ++ ++static struct resource pci_mem_resource = ++{ ++ .name = "pci memory space", ++ .start = LQ_PCI_MEM_BASE, ++ .end = LQ_PCI_MEM_BASE + LQ_PCI_MEM_SIZE - 1, ++ .flags = IORESOURCE_MEM ++}; ++ ++static struct pci_controller lq_pci_controller = ++{ ++ .pci_ops = &lq_pci_ops, ++ .mem_resource = &pci_mem_resource, ++ .mem_offset = 0x00000000UL, ++ .io_resource = &pci_io_resource, ++ .io_offset = 0x00000000UL, ++}; ++ ++int ++pcibios_plat_dev_init(struct pci_dev *dev) ++{ ++ u8 pin; ++ ++ pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin); ++ switch(pin) ++ { ++ case 0: ++ break; ++ case 1: ++ //falling edge level triggered:0x4, low level:0xc, rising edge:0x2 ++ lq_w32(lq_r32(LQ_EBU_PCC_CON) | 0xc, LQ_EBU_PCC_CON); ++ lq_w32(lq_r32(LQ_EBU_PCC_IEN) | 0x10, LQ_EBU_PCC_IEN); ++ break; ++ case 2: ++ case 3: ++ case 4: ++ printk ("WARNING: interrupt pin %d not supported yet!\n", pin); ++ default: ++ printk ("WARNING: invalid interrupt pin %d\n", pin); ++ return 1; ++ } ++ return 0; ++} ++ ++static u32 ++lq_calc_bar11mask(void) ++{ ++ u32 mem, bar11mask; ++ ++ /* BAR11MASK value depends on available memory on system. */ ++ mem = num_physpages * PAGE_SIZE; ++ bar11mask = (0x0ffffff0 & ~((1 << (fls(mem) -1)) -1)) | 8; ++ ++ return bar11mask; ++} ++ ++static void ++lq_pci_setup_clk(int external_clock) ++{ ++ /* set clock to 33Mhz */ ++ lq_w32(lq_r32(LQ_CGU_IFCCR) & ~0xf00000, LQ_CGU_IFCCR); ++ lq_w32(lq_r32(LQ_CGU_IFCCR) | 0x800000, LQ_CGU_IFCCR); ++ if (external_clock) ++ { ++ lq_w32(lq_r32(LQ_CGU_IFCCR) & ~(1 << 16), LQ_CGU_IFCCR); ++ lq_w32((1 << 30), LQ_CGU_PCICR); ++ } else { ++ lq_w32(lq_r32(LQ_CGU_IFCCR) | (1 << 16), LQ_CGU_IFCCR); ++ lq_w32((1 << 31) | (1 << 30), LQ_CGU_PCICR); ++ } ++} ++ ++static void ++lq_pci_setup_gpio(void) ++{ ++ /* PCI reset line is gpio driven */ ++ lq_gpio_request(21, 0, 0, 1, "pci-reset"); ++ ++ /* PCI_REQ line */ ++ lq_gpio_request(29, 1, 0, 0, "pci-req"); ++ ++ /* PCI_GNT line */ ++ lq_gpio_request(30, 1, 0, 1, "pci-gnt"); ++} ++ ++static int __init ++lq_pci_startup(void) ++{ ++ u32 temp_buffer; ++ ++ /* setup pci clock and gpis used by pci */ ++ lq_pci_setup_gpio(); ++ ++ /* enable auto-switching between PCI and EBU */ ++ lq_w32(0xa, PCI_CR_CLK_CTRL); ++ ++ /* busy, i.e. configuration is not done, PCI access has to be retried */ ++ lq_w32(lq_r32(PCI_CR_PCI_MOD) & ~(1 << 24), PCI_CR_PCI_MOD); ++ wmb (); ++ /* BUS Master/IO/MEM access */ ++ lq_w32(lq_r32(PCI_CS_STS_CMD) | 7, PCI_CS_STS_CMD); ++ ++ /* enable external 2 PCI masters */ ++ temp_buffer = lq_r32(PCI_CR_PC_ARB); ++ temp_buffer &= (~(lq_pci_req_mask << 16)); ++ /* enable internal arbiter */ ++ temp_buffer |= (1 << INTERNAL_ARB_ENABLE_BIT); ++ /* enable internal PCI master reqest */ ++ temp_buffer &= (~(3 << PCI_MASTER0_REQ_MASK_2BITS)); ++ ++ /* enable EBU request */ ++ temp_buffer &= (~(3 << PCI_MASTER1_REQ_MASK_2BITS)); ++ ++ /* enable all external masters request */ ++ temp_buffer &= (~(3 << PCI_MASTER2_REQ_MASK_2BITS)); ++ lq_w32(temp_buffer, PCI_CR_PC_ARB); ++ wmb (); ++ ++ /* setup BAR memory regions */ ++ lq_w32(0x18000000, PCI_CR_FCI_ADDR_MAP0); ++ lq_w32(0x18400000, PCI_CR_FCI_ADDR_MAP1); ++ lq_w32(0x18800000, PCI_CR_FCI_ADDR_MAP2); ++ lq_w32(0x18c00000, PCI_CR_FCI_ADDR_MAP3); ++ lq_w32(0x19000000, PCI_CR_FCI_ADDR_MAP4); ++ lq_w32(0x19400000, PCI_CR_FCI_ADDR_MAP5); ++ lq_w32(0x19800000, PCI_CR_FCI_ADDR_MAP6); ++ lq_w32(0x19c00000, PCI_CR_FCI_ADDR_MAP7); ++ lq_w32(0x1ae00000, PCI_CR_FCI_ADDR_MAP11hg); ++ lq_w32(lq_calc_bar11mask(), PCI_CR_BAR11MASK); ++ lq_w32(0, PCI_CR_PCI_ADDR_MAP11); ++ lq_w32(0, PCI_CS_BASE_ADDR1); ++#ifdef CONFIG_SWAP_IO_SPACE ++ /* both TX and RX endian swap are enabled */ ++ lq_w32(lq_r32(PCI_CR_PCI_EOI) | 3, PCI_CR_PCI_EOI); ++ wmb (); ++#endif ++ /*TODO: disable BAR2 & BAR3 - why was this in the origianl infineon code */ ++ lq_w32(lq_r32(PCI_CR_BAR12MASK) | 0x80000000, PCI_CR_BAR12MASK); ++ lq_w32(lq_r32(PCI_CR_BAR13MASK) | 0x80000000, PCI_CR_BAR13MASK); ++ /*use 8 dw burst length */ ++ lq_w32(0x303, PCI_CR_FCI_BURST_LENGTH); ++ lq_w32(lq_r32(PCI_CR_PCI_MOD) | (1 << 24), PCI_CR_PCI_MOD); ++ wmb(); ++ ++ /* toggle reset pin */ ++ __gpio_set_value(21, 0); ++ wmb(); ++ mdelay(1); ++ __gpio_set_value(21, 1); ++ return 0; ++} ++ ++int __init ++pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin){ ++ switch(slot) ++ { ++ case 13: ++ /* IDSEL = AD29 --> USB Host Controller */ ++ return (INT_NUM_IM1_IRL0 + 17); ++ case 14: ++ /* IDSEL = AD30 --> mini PCI connector */ ++ return (INT_NUM_IM0_IRL0 + 22); ++ default: ++ printk("lq_pci: no IRQ found for slot %d, pin %d\n", slot, pin); ++ return 0; ++ } ++} ++ ++static int ++lq_pci_probe(struct platform_device *pdev) ++{ ++ struct lq_pci_data *lq_pci_data = (struct lq_pci_data*) pdev->dev.platform_data; ++ extern int pci_probe_only; ++ ++ pci_probe_only = 0; ++ lq_pci_req_mask = lq_pci_data->req_mask; ++ lq_pci_setup_clk(lq_pci_data->clock); ++ ++ lq_pci_startup(); ++ lq_pci_mapped_cfg = ++ (u32)ioremap_nocache(LQ_PCI_CFG_BASE, LQ_PCI_CFG_BASE); ++ lq_pci_controller.io_map_base = ++ (unsigned long)ioremap(LQ_PCI_IO_BASE, LQ_PCI_IO_SIZE - 1); ++ ++ register_pci_controller(&lq_pci_controller); ++ return 0; ++} ++ ++static struct platform_driver ++lq_pci_driver = { ++ .probe = lq_pci_probe, ++ .driver = { ++ .name = "lq_pci", ++ .owner = THIS_MODULE, ++ }, ++}; ++ ++int __init ++pcibios_init(void) ++{ ++ int ret = platform_driver_register(&lq_pci_driver); ++ if(ret) ++ printk(KERN_INFO "lq_pci: Error registering platfom driver!"); ++ return ret; ++} ++ ++arch_initcall(pcibios_init); |