The Freescale's Layerscape series processors will use ARM cores. The LS1's PCIe controllers is the same as T4240's. So it's better the PCIe controller driver can support PowerPC and ARM simultaneously. This patch is for this purpose. It derives the common functions from arch/powerpc/sysdev/fsl_pci.c to drivers/pci/host/pci-fsl-common.c and leaves the architecture specific functions which should be implemented in arch related files. Signed-off-by: Minghuan Lian <Minghuan.Lian@xxxxxxxxxxxxx> --- change log: v1-v2: 1. rename pci.h to pci-common.h 2. rename pci-fsl.c to pci-fsl-common.c Based on upstream master. Based on the discussion of RFC version here http://patchwork.ozlabs.org/patch/274487/ arch/powerpc/sysdev/fsl_pci.c | 521 +----------------- arch/powerpc/sysdev/fsl_pci.h | 89 ---- .../fsl_pci.c => drivers/pci/host/pci-fsl-common.c | 591 +-------------------- .../fsl_pci.h => include/linux/fsl/pci-common.h | 45 +- 4 files changed, 7 insertions(+), 1239 deletions(-) copy arch/powerpc/sysdev/fsl_pci.c => drivers/pci/host/pci-fsl-common.c (54%) copy arch/powerpc/sysdev/fsl_pci.h => include/linux/fsl/pci-common.h (79%) diff --git a/arch/powerpc/sysdev/fsl_pci.c b/arch/powerpc/sysdev/fsl_pci.c index ccfb50d..26039e3 100644 --- a/arch/powerpc/sysdev/fsl_pci.c +++ b/arch/powerpc/sysdev/fsl_pci.c @@ -27,6 +27,7 @@ #include <linux/log2.h> #include <linux/slab.h> #include <linux/uaccess.h> +#include <linux/fsl/pci-common.h> #include <asm/io.h> #include <asm/prom.h> @@ -58,57 +59,8 @@ static void quirk_fsl_pcie_header(struct pci_dev *dev) return; } -static int fsl_indirect_read_config(struct pci_bus *, unsigned int, - int, int, u32 *); - -static int fsl_pcie_check_link(struct pci_controller *hose) -{ - u32 val = 0; - - if (hose->indirect_type & PPC_INDIRECT_TYPE_FSL_CFG_REG_LINK) { - if (hose->ops->read == fsl_indirect_read_config) { - struct pci_bus bus; - bus.number = hose->first_busno; - bus.sysdata = hose; - bus.ops = hose->ops; - indirect_read_config(&bus, 0, PCIE_LTSSM, 4, &val); - } else - early_read_config_dword(hose, 0, 0, PCIE_LTSSM, &val); - if (val < PCIE_LTSSM_L0) - return 1; - } else { - struct ccsr_pci __iomem *pci = hose->private_data; - /* for PCIe IP rev 3.0 or greater use CSR0 for link state */ - val = (in_be32(&pci->pex_csr0) & PEX_CSR0_LTSSM_MASK) - >> PEX_CSR0_LTSSM_SHIFT; - if (val != PEX_CSR0_LTSSM_L0) - return 1; - } - - return 0; -} - -static int fsl_indirect_read_config(struct pci_bus *bus, unsigned int devfn, - int offset, int len, u32 *val) -{ - struct pci_controller *hose = pci_bus_to_host(bus); - - if (fsl_pcie_check_link(hose)) - hose->indirect_type |= PPC_INDIRECT_TYPE_NO_PCIE_LINK; - else - hose->indirect_type &= ~PPC_INDIRECT_TYPE_NO_PCIE_LINK; - - return indirect_read_config(bus, devfn, offset, len, val); -} - #if defined(CONFIG_FSL_SOC_BOOKE) || defined(CONFIG_PPC_86xx) -static struct pci_ops fsl_indirect_pcie_ops = -{ - .read = fsl_indirect_read_config, - .write = indirect_write_config, -}; - #define MAX_PHYS_ADDR_BITS 40 static u64 pci64_dma_offset = 1ull << MAX_PHYS_ADDR_BITS; @@ -132,291 +84,6 @@ static int fsl_pci_dma_set_mask(struct device *dev, u64 dma_mask) return 0; } -static int setup_one_atmu(struct ccsr_pci __iomem *pci, - unsigned int index, const struct resource *res, - resource_size_t offset) -{ - resource_size_t pci_addr = res->start - offset; - resource_size_t phys_addr = res->start; - resource_size_t size = resource_size(res); - u32 flags = 0x80044000; /* enable & mem R/W */ - unsigned int i; - - pr_debug("PCI MEM resource start 0x%016llx, size 0x%016llx.\n", - (u64)res->start, (u64)size); - - if (res->flags & IORESOURCE_PREFETCH) - flags |= 0x10000000; /* enable relaxed ordering */ - - for (i = 0; size > 0; i++) { - unsigned int bits = min(ilog2(size), - __ffs(pci_addr | phys_addr)); - - if (index + i >= 5) - return -1; - - out_be32(&pci->pow[index + i].potar, pci_addr >> 12); - out_be32(&pci->pow[index + i].potear, (u64)pci_addr >> 44); - out_be32(&pci->pow[index + i].powbar, phys_addr >> 12); - out_be32(&pci->pow[index + i].powar, flags | (bits - 1)); - - pci_addr += (resource_size_t)1U << bits; - phys_addr += (resource_size_t)1U << bits; - size -= (resource_size_t)1U << bits; - } - - return i; -} - -/* atmu setup for fsl pci/pcie controller */ -static void setup_pci_atmu(struct pci_controller *hose) -{ - struct ccsr_pci __iomem *pci = hose->private_data; - int i, j, n, mem_log, win_idx = 3, start_idx = 1, end_idx = 4; - u64 mem, sz, paddr_hi = 0; - u64 offset = 0, paddr_lo = ULLONG_MAX; - u32 pcicsrbar = 0, pcicsrbar_sz; - u32 piwar = PIWAR_EN | PIWAR_PF | PIWAR_TGI_LOCAL | - PIWAR_READ_SNOOP | PIWAR_WRITE_SNOOP; - const char *name = hose->dn->full_name; - const u64 *reg; - int len; - - if (early_find_capability(hose, 0, 0, PCI_CAP_ID_EXP)) { - if (in_be32(&pci->block_rev1) >= PCIE_IP_REV_2_2) { - win_idx = 2; - start_idx = 0; - end_idx = 3; - } - } - - /* Disable all windows (except powar0 since it's ignored) */ - for(i = 1; i < 5; i++) - out_be32(&pci->pow[i].powar, 0); - for (i = start_idx; i < end_idx; i++) - out_be32(&pci->piw[i].piwar, 0); - - /* Setup outbound MEM window */ - for(i = 0, j = 1; i < 3; i++) { - if (!(hose->mem_resources[i].flags & IORESOURCE_MEM)) - continue; - - paddr_lo = min(paddr_lo, (u64)hose->mem_resources[i].start); - paddr_hi = max(paddr_hi, (u64)hose->mem_resources[i].end); - - /* We assume all memory resources have the same offset */ - offset = hose->mem_offset[i]; - n = setup_one_atmu(pci, j, &hose->mem_resources[i], offset); - - if (n < 0 || j >= 5) { - pr_err("Ran out of outbound PCI ATMUs for resource %d!\n", i); - hose->mem_resources[i].flags |= IORESOURCE_DISABLED; - } else - j += n; - } - - /* Setup outbound IO window */ - if (hose->io_resource.flags & IORESOURCE_IO) { - if (j >= 5) { - pr_err("Ran out of outbound PCI ATMUs for IO resource\n"); - } else { - pr_debug("PCI IO resource start 0x%016llx, size 0x%016llx, " - "phy base 0x%016llx.\n", - (u64)hose->io_resource.start, - (u64)resource_size(&hose->io_resource), - (u64)hose->io_base_phys); - out_be32(&pci->pow[j].potar, (hose->io_resource.start >> 12)); - out_be32(&pci->pow[j].potear, 0); - out_be32(&pci->pow[j].powbar, (hose->io_base_phys >> 12)); - /* Enable, IO R/W */ - out_be32(&pci->pow[j].powar, 0x80088000 - | (ilog2(hose->io_resource.end - - hose->io_resource.start + 1) - 1)); - } - } - - /* convert to pci address space */ - paddr_hi -= offset; - paddr_lo -= offset; - - if (paddr_hi == paddr_lo) { - pr_err("%s: No outbound window space\n", name); - return; - } - - if (paddr_lo == 0) { - pr_err("%s: No space for inbound window\n", name); - return; - } - - /* setup PCSRBAR/PEXCSRBAR */ - early_write_config_dword(hose, 0, 0, PCI_BASE_ADDRESS_0, 0xffffffff); - early_read_config_dword(hose, 0, 0, PCI_BASE_ADDRESS_0, &pcicsrbar_sz); - pcicsrbar_sz = ~pcicsrbar_sz + 1; - - if (paddr_hi < (0x100000000ull - pcicsrbar_sz) || - (paddr_lo > 0x100000000ull)) - pcicsrbar = 0x100000000ull - pcicsrbar_sz; - else - pcicsrbar = (paddr_lo - pcicsrbar_sz) & -pcicsrbar_sz; - early_write_config_dword(hose, 0, 0, PCI_BASE_ADDRESS_0, pcicsrbar); - - paddr_lo = min(paddr_lo, (u64)pcicsrbar); - - pr_info("%s: PCICSRBAR @ 0x%x\n", name, pcicsrbar); - - /* Setup inbound mem window */ - mem = memblock_end_of_DRAM(); - - /* - * The msi-address-64 property, if it exists, indicates the physical - * address of the MSIIR register. Normally, this register is located - * inside CCSR, so the ATMU that covers all of CCSR is used. But if - * this property exists, then we normally need to create a new ATMU - * for it. For now, however, we cheat. The only entity that creates - * this property is the Freescale hypervisor, and the address is - * specified in the partition configuration. Typically, the address - * is located in the page immediately after the end of DDR. If so, we - * can avoid allocating a new ATMU by extending the DDR ATMU by one - * page. - */ - reg = of_get_property(hose->dn, "msi-address-64", &len); - if (reg && (len == sizeof(u64))) { - u64 address = be64_to_cpup(reg); - - if ((address >= mem) && (address < (mem + PAGE_SIZE))) { - pr_info("%s: extending DDR ATMU to cover MSIIR", name); - mem += PAGE_SIZE; - } else { - /* TODO: Create a new ATMU for MSIIR */ - pr_warn("%s: msi-address-64 address of %llx is " - "unsupported\n", name, address); - } - } - - sz = min(mem, paddr_lo); - mem_log = ilog2(sz); - - /* PCIe can overmap inbound & outbound since RX & TX are separated */ - if (early_find_capability(hose, 0, 0, PCI_CAP_ID_EXP)) { - /* Size window to exact size if power-of-two or one size up */ - if ((1ull << mem_log) != mem) { - mem_log++; - if ((1ull << mem_log) > mem) - pr_info("%s: Setting PCI inbound window " - "greater than memory size\n", name); - } - - piwar |= ((mem_log - 1) & PIWAR_SZ_MASK); - - /* Setup inbound memory window */ - out_be32(&pci->piw[win_idx].pitar, 0x00000000); - out_be32(&pci->piw[win_idx].piwbar, 0x00000000); - out_be32(&pci->piw[win_idx].piwar, piwar); - win_idx--; - - hose->dma_window_base_cur = 0x00000000; - hose->dma_window_size = (resource_size_t)sz; - - /* - * if we have >4G of memory setup second PCI inbound window to - * let devices that are 64-bit address capable to work w/o - * SWIOTLB and access the full range of memory - */ - if (sz != mem) { - mem_log = ilog2(mem); - - /* Size window up if we dont fit in exact power-of-2 */ - if ((1ull << mem_log) != mem) - mem_log++; - - piwar = (piwar & ~PIWAR_SZ_MASK) | (mem_log - 1); - - /* Setup inbound memory window */ - out_be32(&pci->piw[win_idx].pitar, 0x00000000); - out_be32(&pci->piw[win_idx].piwbear, - pci64_dma_offset >> 44); - out_be32(&pci->piw[win_idx].piwbar, - pci64_dma_offset >> 12); - out_be32(&pci->piw[win_idx].piwar, piwar); - - /* - * install our own dma_set_mask handler to fixup dma_ops - * and dma_offset - */ - ppc_md.dma_set_mask = fsl_pci_dma_set_mask; - - pr_info("%s: Setup 64-bit PCI DMA window\n", name); - } - } else { - u64 paddr = 0; - - /* Setup inbound memory window */ - out_be32(&pci->piw[win_idx].pitar, paddr >> 12); - out_be32(&pci->piw[win_idx].piwbar, paddr >> 12); - out_be32(&pci->piw[win_idx].piwar, (piwar | (mem_log - 1))); - win_idx--; - - paddr += 1ull << mem_log; - sz -= 1ull << mem_log; - - if (sz) { - mem_log = ilog2(sz); - piwar |= (mem_log - 1); - - out_be32(&pci->piw[win_idx].pitar, paddr >> 12); - out_be32(&pci->piw[win_idx].piwbar, paddr >> 12); - out_be32(&pci->piw[win_idx].piwar, piwar); - win_idx--; - - paddr += 1ull << mem_log; - } - - hose->dma_window_base_cur = 0x00000000; - hose->dma_window_size = (resource_size_t)paddr; - } - - if (hose->dma_window_size < mem) { -#ifdef CONFIG_SWIOTLB - ppc_swiotlb_enable = 1; -#else - pr_err("%s: ERROR: Memory size exceeds PCI ATMU ability to " - "map - enable CONFIG_SWIOTLB to avoid dma errors.\n", - name); -#endif - /* adjusting outbound windows could reclaim space in mem map */ - if (paddr_hi < 0xffffffffull) - pr_warning("%s: WARNING: Outbound window cfg leaves " - "gaps in memory map. Adjusting the memory map " - "could reduce unnecessary bounce buffering.\n", - name); - - pr_info("%s: DMA window size is 0x%llx\n", name, - (u64)hose->dma_window_size); - } -} - -static void __init setup_pci_cmd(struct pci_controller *hose) -{ - u16 cmd; - int cap_x; - - early_read_config_word(hose, 0, 0, PCI_COMMAND, &cmd); - cmd |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY - | PCI_COMMAND_IO; - early_write_config_word(hose, 0, 0, PCI_COMMAND, cmd); - - cap_x = early_find_capability(hose, 0, 0, PCI_CAP_ID_PCIX); - if (cap_x) { - int pci_x_cmd = cap_x + PCI_X_CMD; - cmd = PCI_X_CMD_MAX_SPLIT | PCI_X_CMD_MAX_READ - | PCI_X_CMD_ERO | PCI_X_CMD_DPERR_E; - early_write_config_word(hose, 0, 0, pci_x_cmd, cmd); - } else { - early_write_config_byte(hose, 0, 0, PCI_LATENCY_TIMER, 0x80); - } -} - void fsl_pcibios_fixup_bus(struct pci_bus *bus) { struct pci_controller *hose = pci_bus_to_host(bus); @@ -454,112 +121,6 @@ void fsl_pcibios_fixup_bus(struct pci_bus *bus) } } -int __init fsl_add_bridge(struct platform_device *pdev, int is_primary) -{ - int len; - struct pci_controller *hose; - struct resource rsrc; - const int *bus_range; - u8 hdr_type, progif; - struct device_node *dev; - struct ccsr_pci __iomem *pci; - - dev = pdev->dev.of_node; - - if (!of_device_is_available(dev)) { - pr_warning("%s: disabled\n", dev->full_name); - return -ENODEV; - } - - pr_debug("Adding PCI host bridge %s\n", dev->full_name); - - /* Fetch host bridge registers address */ - if (of_address_to_resource(dev, 0, &rsrc)) { - printk(KERN_WARNING "Can't get pci register base!"); - return -ENOMEM; - } - - /* Get bus range if any */ - bus_range = of_get_property(dev, "bus-range", &len); - if (bus_range == NULL || len < 2 * sizeof(int)) - printk(KERN_WARNING "Can't get bus-range for %s, assume" - " bus 0\n", dev->full_name); - - pci_add_flags(PCI_REASSIGN_ALL_BUS); - hose = pcibios_alloc_controller(dev); - if (!hose) - return -ENOMEM; - - /* set platform device as the parent */ - hose->parent = &pdev->dev; - hose->first_busno = bus_range ? bus_range[0] : 0x0; - hose->last_busno = bus_range ? bus_range[1] : 0xff; - - pr_debug("PCI memory map start 0x%016llx, size 0x%016llx\n", - (u64)rsrc.start, (u64)resource_size(&rsrc)); - - pci = hose->private_data = ioremap(rsrc.start, resource_size(&rsrc)); - if (!hose->private_data) - goto no_bridge; - - setup_indirect_pci(hose, rsrc.start, rsrc.start + 0x4, - PPC_INDIRECT_TYPE_BIG_ENDIAN); - - if (in_be32(&pci->block_rev1) < PCIE_IP_REV_3_0) - hose->indirect_type |= PPC_INDIRECT_TYPE_FSL_CFG_REG_LINK; - - if (early_find_capability(hose, 0, 0, PCI_CAP_ID_EXP)) { - /* use fsl_indirect_read_config for PCIe */ - hose->ops = &fsl_indirect_pcie_ops; - /* For PCIE read HEADER_TYPE to identify controler mode */ - early_read_config_byte(hose, 0, 0, PCI_HEADER_TYPE, &hdr_type); - if ((hdr_type & 0x7f) != PCI_HEADER_TYPE_BRIDGE) - goto no_bridge; - - } else { - /* For PCI read PROG to identify controller mode */ - early_read_config_byte(hose, 0, 0, PCI_CLASS_PROG, &progif); - if ((progif & 1) == 1) - goto no_bridge; - } - - setup_pci_cmd(hose); - - /* check PCI express link status */ - if (early_find_capability(hose, 0, 0, PCI_CAP_ID_EXP)) { - hose->indirect_type |= PPC_INDIRECT_TYPE_EXT_REG | - PPC_INDIRECT_TYPE_SURPRESS_PRIMARY_BUS; - if (fsl_pcie_check_link(hose)) - hose->indirect_type |= PPC_INDIRECT_TYPE_NO_PCIE_LINK; - } - - printk(KERN_INFO "Found FSL PCI host bridge at 0x%016llx. " - "Firmware bus number: %d->%d\n", - (unsigned long long)rsrc.start, hose->first_busno, - hose->last_busno); - - pr_debug(" ->Hose at 0x%p, cfg_addr=0x%p,cfg_data=0x%p\n", - hose, hose->cfg_addr, hose->cfg_data); - - /* Interpret the "ranges" property */ - /* This also maps the I/O region and sets isa_io/mem_base */ - pci_process_bridge_OF_ranges(hose, dev, is_primary); - - /* Setup PEX window registers */ - setup_pci_atmu(hose); - - return 0; - -no_bridge: - iounmap(hose->private_data); - /* unmap cfg_data & cfg_addr separately if not on same page */ - if (((unsigned long)hose->cfg_data & PAGE_MASK) != - ((unsigned long)hose->cfg_addr & PAGE_MASK)) - iounmap(hose->cfg_data); - iounmap(hose->cfg_addr); - pcibios_free_controller(hose); - return -ENODEV; -} #endif /* CONFIG_FSL_SOC_BOOKE || CONFIG_PPC_86xx */ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_FREESCALE, PCI_ANY_ID, quirk_fsl_pcie_header); @@ -1029,26 +590,6 @@ int fsl_pci_mcheck_exception(struct pt_regs *regs) #endif #if defined(CONFIG_FSL_SOC_BOOKE) || defined(CONFIG_PPC_86xx) -static const struct of_device_id pci_ids[] = { - { .compatible = "fsl,mpc8540-pci", }, - { .compatible = "fsl,mpc8548-pcie", }, - { .compatible = "fsl,mpc8610-pci", }, - { .compatible = "fsl,mpc8641-pcie", }, - { .compatible = "fsl,qoriq-pcie-v2.1", }, - { .compatible = "fsl,qoriq-pcie-v2.2", }, - { .compatible = "fsl,qoriq-pcie-v2.3", }, - { .compatible = "fsl,qoriq-pcie-v2.4", }, - { .compatible = "fsl,qoriq-pcie-v3.0", }, - - /* - * The following entries are for compatibility with older device - * trees. - */ - { .compatible = "fsl,p1022-pcie", }, - { .compatible = "fsl,p4080-pcie", }, - - {}, -}; struct device_node *fsl_pci_primary; @@ -1083,64 +624,4 @@ void fsl_pci_assign_primary(void) } } } - -static int fsl_pci_probe(struct platform_device *pdev) -{ - int ret; - struct device_node *node; - - node = pdev->dev.of_node; - ret = fsl_add_bridge(pdev, fsl_pci_primary == node); - - mpc85xx_pci_err_probe(pdev); - - return 0; -} - -#ifdef CONFIG_PM -static int fsl_pci_resume(struct device *dev) -{ - struct pci_controller *hose; - struct resource pci_rsrc; - - hose = pci_find_hose_for_OF_device(dev->of_node); - if (!hose) - return -ENODEV; - - if (of_address_to_resource(dev->of_node, 0, &pci_rsrc)) { - dev_err(dev, "Get pci register base failed."); - return -ENODEV; - } - - setup_pci_atmu(hose); - - return 0; -} - -static const struct dev_pm_ops pci_pm_ops = { - .resume = fsl_pci_resume, -}; - -#define PCI_PM_OPS (&pci_pm_ops) - -#else - -#define PCI_PM_OPS NULL - -#endif - -static struct platform_driver fsl_pci_driver = { - .driver = { - .name = "fsl-pci", - .pm = PCI_PM_OPS, - .of_match_table = pci_ids, - }, - .probe = fsl_pci_probe, -}; - -static int __init fsl_pci_init(void) -{ - return platform_driver_register(&fsl_pci_driver); -} -arch_initcall(fsl_pci_init); #endif diff --git a/arch/powerpc/sysdev/fsl_pci.h b/arch/powerpc/sysdev/fsl_pci.h index 8d455df..ce77aad 100644 --- a/arch/powerpc/sysdev/fsl_pci.h +++ b/arch/powerpc/sysdev/fsl_pci.h @@ -21,95 +21,6 @@ struct platform_device; #define PCI_FSL_BRR1 0xbf8 #define PCI_FSL_BRR1_VER 0xffff -#define PCIE_LTSSM 0x0404 /* PCIE Link Training and Status */ -#define PCIE_LTSSM_L0 0x16 /* L0 state */ -#define PCIE_IP_REV_2_2 0x02080202 /* PCIE IP block version Rev2.2 */ -#define PCIE_IP_REV_3_0 0x02080300 /* PCIE IP block version Rev3.0 */ -#define PIWAR_EN 0x80000000 /* Enable */ -#define PIWAR_PF 0x20000000 /* prefetch */ -#define PIWAR_TGI_LOCAL 0x00f00000 /* target - local memory */ -#define PIWAR_READ_SNOOP 0x00050000 -#define PIWAR_WRITE_SNOOP 0x00005000 -#define PIWAR_SZ_MASK 0x0000003f - -/* PCI/PCI Express outbound window reg */ -struct pci_outbound_window_regs { - __be32 potar; /* 0x.0 - Outbound translation address register */ - __be32 potear; /* 0x.4 - Outbound translation extended address register */ - __be32 powbar; /* 0x.8 - Outbound window base address register */ - u8 res1[4]; - __be32 powar; /* 0x.10 - Outbound window attributes register */ - u8 res2[12]; -}; - -/* PCI/PCI Express inbound window reg */ -struct pci_inbound_window_regs { - __be32 pitar; /* 0x.0 - Inbound translation address register */ - u8 res1[4]; - __be32 piwbar; /* 0x.8 - Inbound window base address register */ - __be32 piwbear; /* 0x.c - Inbound window base extended address register */ - __be32 piwar; /* 0x.10 - Inbound window attributes register */ - u8 res2[12]; -}; - -/* PCI/PCI Express IO block registers for 85xx/86xx */ -struct ccsr_pci { - __be32 config_addr; /* 0x.000 - PCI/PCIE Configuration Address Register */ - __be32 config_data; /* 0x.004 - PCI/PCIE Configuration Data Register */ - __be32 int_ack; /* 0x.008 - PCI Interrupt Acknowledge Register */ - __be32 pex_otb_cpl_tor; /* 0x.00c - PCIE Outbound completion timeout register */ - __be32 pex_conf_tor; /* 0x.010 - PCIE configuration timeout register */ - __be32 pex_config; /* 0x.014 - PCIE CONFIG Register */ - __be32 pex_int_status; /* 0x.018 - PCIE interrupt status */ - u8 res2[4]; - __be32 pex_pme_mes_dr; /* 0x.020 - PCIE PME and message detect register */ - __be32 pex_pme_mes_disr; /* 0x.024 - PCIE PME and message disable register */ - __be32 pex_pme_mes_ier; /* 0x.028 - PCIE PME and message interrupt enable register */ - __be32 pex_pmcr; /* 0x.02c - PCIE power management command register */ - u8 res3[3016]; - __be32 block_rev1; /* 0x.bf8 - PCIE Block Revision register 1 */ - __be32 block_rev2; /* 0x.bfc - PCIE Block Revision register 2 */ - -/* PCI/PCI Express outbound window 0-4 - * Window 0 is the default window and is the only window enabled upon reset. - * The default outbound register set is used when a transaction misses - * in all of the other outbound windows. - */ - struct pci_outbound_window_regs pow[5]; - u8 res14[96]; - struct pci_inbound_window_regs pmit; /* 0xd00 - 0xd9c Inbound MSI */ - u8 res6[96]; -/* PCI/PCI Express inbound window 3-0 - * inbound window 1 supports only a 32-bit base address and does not - * define an inbound window base extended address register. - */ - struct pci_inbound_window_regs piw[4]; - - __be32 pex_err_dr; /* 0x.e00 - PCI/PCIE error detect register */ - u8 res21[4]; - __be32 pex_err_en; /* 0x.e08 - PCI/PCIE error interrupt enable register */ - u8 res22[4]; - __be32 pex_err_disr; /* 0x.e10 - PCI/PCIE error disable register */ - u8 res23[12]; - __be32 pex_err_cap_stat; /* 0x.e20 - PCI/PCIE error capture status register */ - u8 res24[4]; - __be32 pex_err_cap_r0; /* 0x.e28 - PCIE error capture register 0 */ - __be32 pex_err_cap_r1; /* 0x.e2c - PCIE error capture register 0 */ - __be32 pex_err_cap_r2; /* 0x.e30 - PCIE error capture register 0 */ - __be32 pex_err_cap_r3; /* 0x.e34 - PCIE error capture register 0 */ - u8 res_e38[200]; - __be32 pdb_stat; /* 0x.f00 - PCIE Debug Status */ - u8 res_f04[16]; - __be32 pex_csr0; /* 0x.f14 - PEX Control/Status register 0*/ -#define PEX_CSR0_LTSSM_MASK 0xFC -#define PEX_CSR0_LTSSM_SHIFT 2 -#define PEX_CSR0_LTSSM_L0 0x11 - __be32 pex_csr1; /* 0x.f18 - PEX Control/Status register 1*/ - u8 res_f1c[228]; - -}; - -extern int fsl_add_bridge(struct platform_device *pdev, int is_primary); extern void fsl_pcibios_fixup_bus(struct pci_bus *bus); extern int mpc83xx_add_bridge(struct device_node *dev); u64 fsl_pci_immrbar_base(struct pci_controller *hose); diff --git a/arch/powerpc/sysdev/fsl_pci.c b/drivers/pci/host/pci-fsl-common.c similarity index 54% copy from arch/powerpc/sysdev/fsl_pci.c copy to drivers/pci/host/pci-fsl-common.c index ccfb50d..69d338b 100644 --- a/arch/powerpc/sysdev/fsl_pci.c +++ b/drivers/pci/host/pci-fsl-common.c @@ -1,5 +1,5 @@ /* - * MPC83xx/85xx/86xx PCI/PCIE support routing. + * 85xx/86xx/LS PCI/PCIE support routing. * * Copyright 2007-2012 Freescale Semiconductor, Inc. * Copyright 2008-2009 MontaVista Software, Inc. @@ -8,9 +8,6 @@ * Recode: ZHANG WEI <wei.zhang@xxxxxxxxxxxxx> * Rewrite the routing for Frescale PCI and PCI Express * Roy Zang <tie-fei.zang@xxxxxxxxxxxxx> - * MPC83xx PCI-Express support: - * Tony Li <tony.li@xxxxxxxxxxxxx> - * Anton Vorontsov <avorontsov@xxxxxxxxxxxxx> * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the @@ -38,29 +35,6 @@ #include <sysdev/fsl_soc.h> #include <sysdev/fsl_pci.h> -static int fsl_pcie_bus_fixup, is_mpc83xx_pci; - -static void quirk_fsl_pcie_header(struct pci_dev *dev) -{ - u8 hdr_type; - - /* if we aren't a PCIe don't bother */ - if (!pci_find_capability(dev, PCI_CAP_ID_EXP)) - return; - - /* if we aren't in host mode don't bother */ - pci_read_config_byte(dev, PCI_HEADER_TYPE, &hdr_type); - if ((hdr_type & 0x7f) != PCI_HEADER_TYPE_BRIDGE) - return; - - dev->class = PCI_CLASS_BRIDGE_PCI << 8; - fsl_pcie_bus_fixup = 1; - return; -} - -static int fsl_indirect_read_config(struct pci_bus *, unsigned int, - int, int, u32 *); - static int fsl_pcie_check_link(struct pci_controller *hose) { u32 val = 0; @@ -109,29 +83,6 @@ static struct pci_ops fsl_indirect_pcie_ops = .write = indirect_write_config, }; -#define MAX_PHYS_ADDR_BITS 40 -static u64 pci64_dma_offset = 1ull << MAX_PHYS_ADDR_BITS; - -static int fsl_pci_dma_set_mask(struct device *dev, u64 dma_mask) -{ - if (!dev->dma_mask || !dma_supported(dev, dma_mask)) - return -EIO; - - /* - * Fixup PCI devices that are able to DMA to above the physical - * address width of the SoC such that we can address any internal - * SoC address from across PCI if needed - */ - if ((dev->bus == &pci_bus_type) && - dma_mask >= DMA_BIT_MASK(MAX_PHYS_ADDR_BITS)) { - set_dma_ops(dev, &dma_direct_ops); - set_dma_offset(dev, pci64_dma_offset); - } - - *dev->dma_mask = dma_mask; - return 0; -} - static int setup_one_atmu(struct ccsr_pci __iomem *pci, unsigned int index, const struct resource *res, resource_size_t offset) @@ -417,43 +368,6 @@ static void __init setup_pci_cmd(struct pci_controller *hose) } } -void fsl_pcibios_fixup_bus(struct pci_bus *bus) -{ - struct pci_controller *hose = pci_bus_to_host(bus); - int i, is_pcie = 0, no_link; - - /* The root complex bridge comes up with bogus resources, - * we copy the PHB ones in. - * - * With the current generic PCI code, the PHB bus no longer - * has bus->resource[0..4] set, so things are a bit more - * tricky. - */ - - if (fsl_pcie_bus_fixup) - is_pcie = early_find_capability(hose, 0, 0, PCI_CAP_ID_EXP); - no_link = !!(hose->indirect_type & PPC_INDIRECT_TYPE_NO_PCIE_LINK); - - if (bus->parent == hose->bus && (is_pcie || no_link)) { - for (i = 0; i < PCI_BRIDGE_RESOURCE_NUM; ++i) { - struct resource *res = bus->resource[i]; - struct resource *par; - - if (!res) - continue; - if (i == 0) - par = &hose->io_resource; - else if (i < 4) - par = &hose->mem_resources[i-1]; - else par = NULL; - - res->start = par ? par->start : 0; - res->end = par ? par->end : 0; - res->flags = par ? par->flags : 0; - } - } -} - int __init fsl_add_bridge(struct platform_device *pdev, int is_primary) { int len; @@ -560,475 +474,7 @@ no_bridge: pcibios_free_controller(hose); return -ENODEV; } -#endif /* CONFIG_FSL_SOC_BOOKE || CONFIG_PPC_86xx */ - -DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_FREESCALE, PCI_ANY_ID, quirk_fsl_pcie_header); - -#if defined(CONFIG_PPC_83xx) || defined(CONFIG_PPC_MPC512x) -struct mpc83xx_pcie_priv { - void __iomem *cfg_type0; - void __iomem *cfg_type1; - u32 dev_base; -}; - -struct pex_inbound_window { - u32 ar; - u32 tar; - u32 barl; - u32 barh; -}; - -/* - * With the convention of u-boot, the PCIE outbound window 0 serves - * as configuration transactions outbound. - */ -#define PEX_OUTWIN0_BAR 0xCA4 -#define PEX_OUTWIN0_TAL 0xCA8 -#define PEX_OUTWIN0_TAH 0xCAC -#define PEX_RC_INWIN_BASE 0xE60 -#define PEX_RCIWARn_EN 0x1 - -static int mpc83xx_pcie_exclude_device(struct pci_bus *bus, unsigned int devfn) -{ - struct pci_controller *hose = pci_bus_to_host(bus); - - if (hose->indirect_type & PPC_INDIRECT_TYPE_NO_PCIE_LINK) - return PCIBIOS_DEVICE_NOT_FOUND; - /* - * Workaround for the HW bug: for Type 0 configure transactions the - * PCI-E controller does not check the device number bits and just - * assumes that the device number bits are 0. - */ - if (bus->number == hose->first_busno || - bus->primary == hose->first_busno) { - if (devfn & 0xf8) - return PCIBIOS_DEVICE_NOT_FOUND; - } - - if (ppc_md.pci_exclude_device) { - if (ppc_md.pci_exclude_device(hose, bus->number, devfn)) - return PCIBIOS_DEVICE_NOT_FOUND; - } - - return PCIBIOS_SUCCESSFUL; -} - -static void __iomem *mpc83xx_pcie_remap_cfg(struct pci_bus *bus, - unsigned int devfn, int offset) -{ - struct pci_controller *hose = pci_bus_to_host(bus); - struct mpc83xx_pcie_priv *pcie = hose->dn->data; - u32 dev_base = bus->number << 24 | devfn << 16; - int ret; - - ret = mpc83xx_pcie_exclude_device(bus, devfn); - if (ret) - return NULL; - - offset &= 0xfff; - - /* Type 0 */ - if (bus->number == hose->first_busno) - return pcie->cfg_type0 + offset; - - if (pcie->dev_base == dev_base) - goto mapped; - - out_le32(pcie->cfg_type0 + PEX_OUTWIN0_TAL, dev_base); - - pcie->dev_base = dev_base; -mapped: - return pcie->cfg_type1 + offset; -} - -static int mpc83xx_pcie_read_config(struct pci_bus *bus, unsigned int devfn, - int offset, int len, u32 *val) -{ - void __iomem *cfg_addr; - - cfg_addr = mpc83xx_pcie_remap_cfg(bus, devfn, offset); - if (!cfg_addr) - return PCIBIOS_DEVICE_NOT_FOUND; - - switch (len) { - case 1: - *val = in_8(cfg_addr); - break; - case 2: - *val = in_le16(cfg_addr); - break; - default: - *val = in_le32(cfg_addr); - break; - } - - return PCIBIOS_SUCCESSFUL; -} - -static int mpc83xx_pcie_write_config(struct pci_bus *bus, unsigned int devfn, - int offset, int len, u32 val) -{ - struct pci_controller *hose = pci_bus_to_host(bus); - void __iomem *cfg_addr; - - cfg_addr = mpc83xx_pcie_remap_cfg(bus, devfn, offset); - if (!cfg_addr) - return PCIBIOS_DEVICE_NOT_FOUND; - - /* PPC_INDIRECT_TYPE_SURPRESS_PRIMARY_BUS */ - if (offset == PCI_PRIMARY_BUS && bus->number == hose->first_busno) - val &= 0xffffff00; - - switch (len) { - case 1: - out_8(cfg_addr, val); - break; - case 2: - out_le16(cfg_addr, val); - break; - default: - out_le32(cfg_addr, val); - break; - } - - return PCIBIOS_SUCCESSFUL; -} - -static struct pci_ops mpc83xx_pcie_ops = { - .read = mpc83xx_pcie_read_config, - .write = mpc83xx_pcie_write_config, -}; - -static int __init mpc83xx_pcie_setup(struct pci_controller *hose, - struct resource *reg) -{ - struct mpc83xx_pcie_priv *pcie; - u32 cfg_bar; - int ret = -ENOMEM; - - pcie = zalloc_maybe_bootmem(sizeof(*pcie), GFP_KERNEL); - if (!pcie) - return ret; - - pcie->cfg_type0 = ioremap(reg->start, resource_size(reg)); - if (!pcie->cfg_type0) - goto err0; - - cfg_bar = in_le32(pcie->cfg_type0 + PEX_OUTWIN0_BAR); - if (!cfg_bar) { - /* PCI-E isn't configured. */ - ret = -ENODEV; - goto err1; - } - - pcie->cfg_type1 = ioremap(cfg_bar, 0x1000); - if (!pcie->cfg_type1) - goto err1; - - WARN_ON(hose->dn->data); - hose->dn->data = pcie; - hose->ops = &mpc83xx_pcie_ops; - hose->indirect_type |= PPC_INDIRECT_TYPE_FSL_CFG_REG_LINK; - - out_le32(pcie->cfg_type0 + PEX_OUTWIN0_TAH, 0); - out_le32(pcie->cfg_type0 + PEX_OUTWIN0_TAL, 0); - - if (fsl_pcie_check_link(hose)) - hose->indirect_type |= PPC_INDIRECT_TYPE_NO_PCIE_LINK; - - return 0; -err1: - iounmap(pcie->cfg_type0); -err0: - kfree(pcie); - return ret; - -} - -int __init mpc83xx_add_bridge(struct device_node *dev) -{ - int ret; - int len; - struct pci_controller *hose; - struct resource rsrc_reg; - struct resource rsrc_cfg; - const int *bus_range; - int primary; - - is_mpc83xx_pci = 1; - - if (!of_device_is_available(dev)) { - pr_warning("%s: disabled by the firmware.\n", - dev->full_name); - return -ENODEV; - } - pr_debug("Adding PCI host bridge %s\n", dev->full_name); - - /* Fetch host bridge registers address */ - if (of_address_to_resource(dev, 0, &rsrc_reg)) { - printk(KERN_WARNING "Can't get pci register base!\n"); - return -ENOMEM; - } - - memset(&rsrc_cfg, 0, sizeof(rsrc_cfg)); - - if (of_address_to_resource(dev, 1, &rsrc_cfg)) { - printk(KERN_WARNING - "No pci config register base in dev tree, " - "using default\n"); - /* - * MPC83xx supports up to two host controllers - * one at 0x8500 has config space registers at 0x8300 - * one at 0x8600 has config space registers at 0x8380 - */ - if ((rsrc_reg.start & 0xfffff) == 0x8500) - rsrc_cfg.start = (rsrc_reg.start & 0xfff00000) + 0x8300; - else if ((rsrc_reg.start & 0xfffff) == 0x8600) - rsrc_cfg.start = (rsrc_reg.start & 0xfff00000) + 0x8380; - } - /* - * Controller at offset 0x8500 is primary - */ - if ((rsrc_reg.start & 0xfffff) == 0x8500) - primary = 1; - else - primary = 0; - - /* Get bus range if any */ - bus_range = of_get_property(dev, "bus-range", &len); - if (bus_range == NULL || len < 2 * sizeof(int)) { - printk(KERN_WARNING "Can't get bus-range for %s, assume" - " bus 0\n", dev->full_name); - } - - pci_add_flags(PCI_REASSIGN_ALL_BUS); - hose = pcibios_alloc_controller(dev); - if (!hose) - return -ENOMEM; - - hose->first_busno = bus_range ? bus_range[0] : 0; - hose->last_busno = bus_range ? bus_range[1] : 0xff; - - if (of_device_is_compatible(dev, "fsl,mpc8314-pcie")) { - ret = mpc83xx_pcie_setup(hose, &rsrc_reg); - if (ret) - goto err0; - } else { - setup_indirect_pci(hose, rsrc_cfg.start, - rsrc_cfg.start + 4, 0); - } - - printk(KERN_INFO "Found FSL PCI host bridge at 0x%016llx. " - "Firmware bus number: %d->%d\n", - (unsigned long long)rsrc_reg.start, hose->first_busno, - hose->last_busno); - - pr_debug(" ->Hose at 0x%p, cfg_addr=0x%p,cfg_data=0x%p\n", - hose, hose->cfg_addr, hose->cfg_data); - - /* Interpret the "ranges" property */ - /* This also maps the I/O region and sets isa_io/mem_base */ - pci_process_bridge_OF_ranges(hose, dev, primary); - - return 0; -err0: - pcibios_free_controller(hose); - return ret; -} -#endif /* CONFIG_PPC_83xx */ - -u64 fsl_pci_immrbar_base(struct pci_controller *hose) -{ -#ifdef CONFIG_PPC_83xx - if (is_mpc83xx_pci) { - struct mpc83xx_pcie_priv *pcie = hose->dn->data; - struct pex_inbound_window *in; - int i; - - /* Walk the Root Complex Inbound windows to match IMMR base */ - in = pcie->cfg_type0 + PEX_RC_INWIN_BASE; - for (i = 0; i < 4; i++) { - /* not enabled, skip */ - if (!in_le32(&in[i].ar) & PEX_RCIWARn_EN) - continue; - - if (get_immrbase() == in_le32(&in[i].tar)) - return (u64)in_le32(&in[i].barh) << 32 | - in_le32(&in[i].barl); - } - - printk(KERN_WARNING "could not find PCI BAR matching IMMR\n"); - } -#endif - -#if defined(CONFIG_FSL_SOC_BOOKE) || defined(CONFIG_PPC_86xx) - if (!is_mpc83xx_pci) { - u32 base; - - pci_bus_read_config_dword(hose->bus, - PCI_DEVFN(0, 0), PCI_BASE_ADDRESS_0, &base); - return base; - } -#endif - - return 0; -} -#ifdef CONFIG_E500 -static int mcheck_handle_load(struct pt_regs *regs, u32 inst) -{ - unsigned int rd, ra, rb, d; - - rd = get_rt(inst); - ra = get_ra(inst); - rb = get_rb(inst); - d = get_d(inst); - - switch (get_op(inst)) { - case 31: - switch (get_xop(inst)) { - case OP_31_XOP_LWZX: - case OP_31_XOP_LWBRX: - regs->gpr[rd] = 0xffffffff; - break; - - case OP_31_XOP_LWZUX: - regs->gpr[rd] = 0xffffffff; - regs->gpr[ra] += regs->gpr[rb]; - break; - - case OP_31_XOP_LBZX: - regs->gpr[rd] = 0xff; - break; - - case OP_31_XOP_LBZUX: - regs->gpr[rd] = 0xff; - regs->gpr[ra] += regs->gpr[rb]; - break; - - case OP_31_XOP_LHZX: - case OP_31_XOP_LHBRX: - regs->gpr[rd] = 0xffff; - break; - - case OP_31_XOP_LHZUX: - regs->gpr[rd] = 0xffff; - regs->gpr[ra] += regs->gpr[rb]; - break; - - case OP_31_XOP_LHAX: - regs->gpr[rd] = ~0UL; - break; - - case OP_31_XOP_LHAUX: - regs->gpr[rd] = ~0UL; - regs->gpr[ra] += regs->gpr[rb]; - break; - - default: - return 0; - } - break; - - case OP_LWZ: - regs->gpr[rd] = 0xffffffff; - break; - - case OP_LWZU: - regs->gpr[rd] = 0xffffffff; - regs->gpr[ra] += (s16)d; - break; - - case OP_LBZ: - regs->gpr[rd] = 0xff; - break; - - case OP_LBZU: - regs->gpr[rd] = 0xff; - regs->gpr[ra] += (s16)d; - break; - - case OP_LHZ: - regs->gpr[rd] = 0xffff; - break; - - case OP_LHZU: - regs->gpr[rd] = 0xffff; - regs->gpr[ra] += (s16)d; - break; - - case OP_LHA: - regs->gpr[rd] = ~0UL; - break; - - case OP_LHAU: - regs->gpr[rd] = ~0UL; - regs->gpr[ra] += (s16)d; - break; - - default: - return 0; - } - - return 1; -} - -static int is_in_pci_mem_space(phys_addr_t addr) -{ - struct pci_controller *hose; - struct resource *res; - int i; - - list_for_each_entry(hose, &hose_list, list_node) { - if (!(hose->indirect_type & PPC_INDIRECT_TYPE_EXT_REG)) - continue; - - for (i = 0; i < 3; i++) { - res = &hose->mem_resources[i]; - if ((res->flags & IORESOURCE_MEM) && - addr >= res->start && addr <= res->end) - return 1; - } - } - return 0; -} - -int fsl_pci_mcheck_exception(struct pt_regs *regs) -{ - u32 inst; - int ret; - phys_addr_t addr = 0; - - /* Let KVM/QEMU deal with the exception */ - if (regs->msr & MSR_GS) - return 0; - -#ifdef CONFIG_PHYS_64BIT - addr = mfspr(SPRN_MCARU); - addr <<= 32; -#endif - addr += mfspr(SPRN_MCAR); - - if (is_in_pci_mem_space(addr)) { - if (user_mode(regs)) { - pagefault_disable(); - ret = get_user(regs->nip, &inst); - pagefault_enable(); - } else { - ret = probe_kernel_address(regs->nip, inst); - } - - if (mcheck_handle_load(regs, inst)) { - regs->nip += 4; - return 1; - } - } - - return 0; -} -#endif - -#if defined(CONFIG_FSL_SOC_BOOKE) || defined(CONFIG_PPC_86xx) static const struct of_device_id pci_ids[] = { { .compatible = "fsl,mpc8540-pci", }, { .compatible = "fsl,mpc8548-pcie", }, @@ -1050,40 +496,6 @@ static const struct of_device_id pci_ids[] = { {}, }; -struct device_node *fsl_pci_primary; - -void fsl_pci_assign_primary(void) -{ - struct device_node *np; - - /* Callers can specify the primary bus using other means. */ - if (fsl_pci_primary) - return; - - /* If a PCI host bridge contains an ISA node, it's primary. */ - np = of_find_node_by_type(NULL, "isa"); - while ((fsl_pci_primary = of_get_parent(np))) { - of_node_put(np); - np = fsl_pci_primary; - - if (of_match_node(pci_ids, np) && of_device_is_available(np)) - return; - } - - /* - * If there's no PCI host bridge with ISA, arbitrarily - * designate one as primary. This can go away once - * various bugs with primary-less systems are fixed. - */ - for_each_matching_node(np, pci_ids) { - if (of_device_is_available(np)) { - fsl_pci_primary = np; - of_node_put(np); - return; - } - } -} - static int fsl_pci_probe(struct platform_device *pdev) { int ret; @@ -1143,4 +555,3 @@ static int __init fsl_pci_init(void) return platform_driver_register(&fsl_pci_driver); } arch_initcall(fsl_pci_init); -#endif diff --git a/arch/powerpc/sysdev/fsl_pci.h b/include/linux/fsl/pci-common.h similarity index 79% copy from arch/powerpc/sysdev/fsl_pci.h copy to include/linux/fsl/pci-common.h index 8d455df..5e4f683 100644 --- a/arch/powerpc/sysdev/fsl_pci.h +++ b/include/linux/fsl/pci-common.h @@ -1,5 +1,5 @@ /* - * MPC85xx/86xx PCI Express structure define + * MPC85xx/86xx/LS PCI Express structure define * * Copyright 2007,2011 Freescale Semiconductor, Inc * @@ -11,15 +11,8 @@ */ #ifdef __KERNEL__ -#ifndef __POWERPC_FSL_PCI_H -#define __POWERPC_FSL_PCI_H - -struct platform_device; - - -/* FSL PCI controller BRR1 register */ -#define PCI_FSL_BRR1 0xbf8 -#define PCI_FSL_BRR1_VER 0xffff +#ifndef __PCI_COMMON_H +#define __PCI_COMMON_H #define PCIE_LTSSM 0x0404 /* PCIE Link Training and Status */ #define PCIE_LTSSM_L0 0x16 /* L0 state */ @@ -52,7 +45,7 @@ struct pci_inbound_window_regs { u8 res2[12]; }; -/* PCI/PCI Express IO block registers for 85xx/86xx */ +/* PCI/PCI Express IO block registers for 85xx/86xx/LS */ struct ccsr_pci { __be32 config_addr; /* 0x.000 - PCI/PCIE Configuration Address Register */ __be32 config_data; /* 0x.004 - PCI/PCIE Configuration Data Register */ @@ -109,33 +102,5 @@ struct ccsr_pci { }; -extern int fsl_add_bridge(struct platform_device *pdev, int is_primary); -extern void fsl_pcibios_fixup_bus(struct pci_bus *bus); -extern int mpc83xx_add_bridge(struct device_node *dev); -u64 fsl_pci_immrbar_base(struct pci_controller *hose); - -extern struct device_node *fsl_pci_primary; - -#ifdef CONFIG_PCI -void fsl_pci_assign_primary(void); -#else -static inline void fsl_pci_assign_primary(void) {} -#endif - -#ifdef CONFIG_EDAC_MPC85XX -int mpc85xx_pci_err_probe(struct platform_device *op); -#else -static inline int mpc85xx_pci_err_probe(struct platform_device *op) -{ - return -ENOTSUPP; -} -#endif - -#ifdef CONFIG_FSL_PCI -extern int fsl_pci_mcheck_exception(struct pt_regs *); -#else -static inline int fsl_pci_mcheck_exception(struct pt_regs *regs) {return 0; } -#endif - -#endif /* __POWERPC_FSL_PCI_H */ +#endif /* __PCI_COMMON_H */ #endif /* __KERNEL__ */ -- 1.8.1.2 -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
