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author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-11-15 15:01:28 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-11-15 15:01:28 -0800 |
commit | 1b6115fbe3b3db746d7baa11399dd617fc75e1c4 (patch) | |
tree | d84d690504f0872eb8f5a1b18ed251236872fae5 /arch/x86 | |
parent | ad0835a93008e5901415a0a27847d6a27649aa3a (diff) | |
parent | 91f3140fdef61074515470243370d92a45f0b516 (diff) | |
download | linux-1b6115fbe3b3db746d7baa11399dd617fc75e1c4.tar.gz |
Merge tag 'pci-v4.15-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas: - detach driver before tearing down procfs/sysfs (Alex Williamson) - disable PCIe services during shutdown (Sinan Kaya) - fix ASPM oops on systems with no Root Ports (Ard Biesheuvel) - fix ASPM LTR_L1.2_THRESHOLD programming (Bjorn Helgaas) - fix ASPM Common_Mode_Restore_Time computation (Bjorn Helgaas) - fix portdrv MSI/MSI-X vector allocation (Dongdong Liu, Bjorn Helgaas) - report non-fatal AER errors only to the affected endpoint (Gabriele Paoloni) - distribute bus numbers, MMIO, and I/O space among hotplug bridges to allow more devices to be hot-added (Mika Westerberg) - fix pciehp races during initialization and surprise link down (Mika Westerberg) - handle surprise-removed devices in PME handling (Qiang) - support resizable BARs for large graphics devices (Christian König) - expose SR-IOV offset, stride, and VF device ID via sysfs (Filippo Sironi) - create SR-IOV virtfn/physfn sysfs links before attaching driver (Stuart Hayes) - fix SR-IOV "ARI Capable Hierarchy" restore issue (Tony Nguyen) - enforce Kconfig IOV/REALLOC dependency (Sascha El-Sharkawy) - avoid slot reset if bridge itself is broken (Jan Glauber) - clean up pci_reset_function() path (Jan H. Schönherr) - make pci_map_rom() fail if the option ROM is invalid (Changbin Du) - convert timers to timer_setup() (Kees Cook) - move PCI_QUIRKS to PCI bus Kconfig menu (Randy Dunlap) - constify pci_dev_type and intel_mid_pci_ops (Bhumika Goyal) - remove unnecessary pci_dev, pci_bus, resource, pcibios_set_master() declarations (Bjorn Helgaas) - fix endpoint framework overflows and BUG()s (Dan Carpenter) - fix endpoint framework issues (Kishon Vijay Abraham I) - avoid broken Cavium CN8xxx bus reset behavior (David Daney) - extend Cavium ACS capability quirks (Vadim Lomovtsev) - support Synopsys DesignWare RC in ECAM mode (Ard Biesheuvel) - turn off dra7xx clocks cleanly on shutdown (Keerthy) - fix Faraday probe error path (Wei Yongjun) - support HiSilicon STB SoC PCIe host controller (Jianguo Sun) - fix Hyper-V interrupt affinity issue (Dexuan Cui) - remove useless ACPI warning for Hyper-V pass-through devices (Vitaly Kuznetsov) - support multiple MSI on iProc (Sandor Bodo-Merle) - support Layerscape LS1012a and LS1046a PCIe host controllers (Hou Zhiqiang) - fix Layerscape default error response (Minghuan Lian) - support MSI on Tango host controller (Marc Gonzalez) - support Tegra186 PCIe host controller (Manikanta Maddireddy) - use generic accessors on Tegra when possible (Thierry Reding) - support V3 Semiconductor PCI host controller (Linus Walleij) * tag 'pci-v4.15-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (85 commits) PCI/ASPM: Add L1 Substates definitions PCI/ASPM: Reformat ASPM register definitions PCI/ASPM: Use correct capability pointer to program LTR_L1.2_THRESHOLD PCI/ASPM: Account for downstream device's Port Common_Mode_Restore_Time PCI: xgene: Rename xgene_pcie_probe_bridge() to xgene_pcie_probe() PCI: xilinx: Rename xilinx_pcie_link_is_up() to xilinx_pcie_link_up() PCI: altera: Rename altera_pcie_link_is_up() to altera_pcie_link_up() PCI: Fix kernel-doc build warning PCI: Fail pci_map_rom() if the option ROM is invalid PCI: Move pci_map_rom() error path PCI: Move PCI_QUIRKS to the PCI bus menu alpha/PCI: Make pdev_save_srm_config() static PCI: Remove unused declarations PCI: Remove redundant pci_dev, pci_bus, resource declarations PCI: Remove redundant pcibios_set_master() declarations PCI/PME: Handle invalid data when reading Root Status PCI: hv: Use effective affinity mask PCI: pciehp: Do not clear Presence Detect Changed during initialization PCI: pciehp: Fix race condition handling surprise link down PCI: Distribute available resources to hotplug-capable bridges ...
Diffstat (limited to 'arch/x86')
-rw-r--r-- | arch/x86/include/asm/pci.h | 2 | ||||
-rw-r--r-- | arch/x86/pci/fixup.c | 85 | ||||
-rw-r--r-- | arch/x86/pci/intel_mid_pci.c | 2 |
3 files changed, 86 insertions, 3 deletions
diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h index 09c06b0fb964..d32175e30259 100644 --- a/arch/x86/include/asm/pci.h +++ b/arch/x86/include/asm/pci.h @@ -89,10 +89,8 @@ extern unsigned long pci_mem_start; #define PCIBIOS_MIN_CARDBUS_IO 0x4000 extern int pcibios_enabled; -void pcibios_config_init(void); void pcibios_scan_root(int bus); -void pcibios_set_master(struct pci_dev *dev); struct irq_routing_table *pcibios_get_irq_routing_table(void); int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq); diff --git a/arch/x86/pci/fixup.c b/arch/x86/pci/fixup.c index 4210da7b44de..1e996df687a3 100644 --- a/arch/x86/pci/fixup.c +++ b/arch/x86/pci/fixup.c @@ -636,3 +636,88 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x2030, quirk_no_aersid); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x2031, quirk_no_aersid); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x2032, quirk_no_aersid); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x2033, quirk_no_aersid); + +#ifdef CONFIG_PHYS_ADDR_T_64BIT + +#define AMD_141b_MMIO_BASE(x) (0x80 + (x) * 0x8) +#define AMD_141b_MMIO_BASE_RE_MASK BIT(0) +#define AMD_141b_MMIO_BASE_WE_MASK BIT(1) +#define AMD_141b_MMIO_BASE_MMIOBASE_MASK GENMASK(31,8) + +#define AMD_141b_MMIO_LIMIT(x) (0x84 + (x) * 0x8) +#define AMD_141b_MMIO_LIMIT_MMIOLIMIT_MASK GENMASK(31,8) + +#define AMD_141b_MMIO_HIGH(x) (0x180 + (x) * 0x4) +#define AMD_141b_MMIO_HIGH_MMIOBASE_MASK GENMASK(7,0) +#define AMD_141b_MMIO_HIGH_MMIOLIMIT_SHIFT 16 +#define AMD_141b_MMIO_HIGH_MMIOLIMIT_MASK GENMASK(23,16) + +/* + * The PCI Firmware Spec, rev 3.2, notes that ACPI should optionally allow + * configuring host bridge windows using the _PRS and _SRS methods. + * + * But this is rarely implemented, so we manually enable a large 64bit BAR for + * PCIe device on AMD Family 15h (Models 00h-1fh, 30h-3fh, 60h-7fh) Processors + * here. + */ +static void pci_amd_enable_64bit_bar(struct pci_dev *dev) +{ + unsigned i; + u32 base, limit, high; + struct resource *res, *conflict; + + for (i = 0; i < 8; i++) { + pci_read_config_dword(dev, AMD_141b_MMIO_BASE(i), &base); + pci_read_config_dword(dev, AMD_141b_MMIO_HIGH(i), &high); + + /* Is this slot free? */ + if (!(base & (AMD_141b_MMIO_BASE_RE_MASK | + AMD_141b_MMIO_BASE_WE_MASK))) + break; + + base >>= 8; + base |= high << 24; + + /* Abort if a slot already configures a 64bit BAR. */ + if (base > 0x10000) + return; + } + if (i == 8) + return; + + res = kzalloc(sizeof(*res), GFP_KERNEL); + if (!res) + return; + + res->name = "PCI Bus 0000:00"; + res->flags = IORESOURCE_PREFETCH | IORESOURCE_MEM | + IORESOURCE_MEM_64 | IORESOURCE_WINDOW; + res->start = 0x100000000ull; + res->end = 0xfd00000000ull - 1; + + /* Just grab the free area behind system memory for this */ + while ((conflict = request_resource_conflict(&iomem_resource, res))) + res->start = conflict->end + 1; + + dev_info(&dev->dev, "adding root bus resource %pR\n", res); + + base = ((res->start >> 8) & AMD_141b_MMIO_BASE_MMIOBASE_MASK) | + AMD_141b_MMIO_BASE_RE_MASK | AMD_141b_MMIO_BASE_WE_MASK; + limit = ((res->end + 1) >> 8) & AMD_141b_MMIO_LIMIT_MMIOLIMIT_MASK; + high = ((res->start >> 40) & AMD_141b_MMIO_HIGH_MMIOBASE_MASK) | + ((((res->end + 1) >> 40) << AMD_141b_MMIO_HIGH_MMIOLIMIT_SHIFT) + & AMD_141b_MMIO_HIGH_MMIOLIMIT_MASK); + + pci_write_config_dword(dev, AMD_141b_MMIO_HIGH(i), high); + pci_write_config_dword(dev, AMD_141b_MMIO_LIMIT(i), limit); + pci_write_config_dword(dev, AMD_141b_MMIO_BASE(i), base); + + pci_bus_add_resource(dev->bus, res, 0); +} +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AMD, 0x1401, pci_amd_enable_64bit_bar); +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AMD, 0x141b, pci_amd_enable_64bit_bar); +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AMD, 0x1571, pci_amd_enable_64bit_bar); +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AMD, 0x15b1, pci_amd_enable_64bit_bar); +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AMD, 0x1601, pci_amd_enable_64bit_bar); + +#endif diff --git a/arch/x86/pci/intel_mid_pci.c b/arch/x86/pci/intel_mid_pci.c index 1012a5f0f98d..511921045312 100644 --- a/arch/x86/pci/intel_mid_pci.c +++ b/arch/x86/pci/intel_mid_pci.c @@ -280,7 +280,7 @@ static void intel_mid_pci_irq_disable(struct pci_dev *dev) } } -static struct pci_ops intel_mid_pci_ops = { +static const struct pci_ops intel_mid_pci_ops __initconst = { .read = pci_read, .write = pci_write, }; |