diff options
| -rw-r--r-- | drivers/acpi/pci_root.c | 76 | ||||
| -rw-r--r-- | drivers/eisa/pci_eisa.c | 67 | ||||
| -rw-r--r-- | drivers/gpu/drm/nouveau/core/subdev/bios/base.c | 17 | ||||
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_bios.c | 26 | ||||
| -rw-r--r-- | drivers/pci/pci-acpi.c | 15 | ||||
| -rw-r--r-- | drivers/pci/pci-driver.c | 5 | ||||
| -rw-r--r-- | drivers/pci/pcie/portdrv_pci.c | 13 | ||||
| -rw-r--r-- | drivers/pci/rom.c | 67 | ||||
| -rw-r--r-- | include/linux/pci.h | 1 |
9 files changed, 169 insertions, 118 deletions
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c index 5ff173066127..6ae5e440436e 100644 --- a/drivers/acpi/pci_root.c +++ b/drivers/acpi/pci_root.c @@ -415,7 +415,6 @@ static int acpi_pci_root_add(struct acpi_device *device, struct acpi_pci_root *root; struct acpi_pci_driver *driver; u32 flags, base_flags; - bool is_osc_granted = false; root = kzalloc(sizeof(struct acpi_pci_root), GFP_KERNEL); if (!root) @@ -476,6 +475,30 @@ static int acpi_pci_root_add(struct acpi_device *device, flags = base_flags = OSC_PCI_SEGMENT_GROUPS_SUPPORT; acpi_pci_osc_support(root, flags); + /* + * TBD: Need PCI interface for enumeration/configuration of roots. + */ + + mutex_lock(&acpi_pci_root_lock); + list_add_tail(&root->node, &acpi_pci_roots); + mutex_unlock(&acpi_pci_root_lock); + + /* + * Scan the Root Bridge + * -------------------- + * Must do this prior to any attempt to bind the root device, as the + * PCI namespace does not get created until this call is made (and + * thus the root bridge's pci_dev does not exist). + */ + root->bus = pci_acpi_scan_root(root); + if (!root->bus) { + printk(KERN_ERR PREFIX + "Bus %04x:%02x not present in PCI namespace\n", + root->segment, (unsigned int)root->secondary.start); + result = -ENODEV; + goto out_del_root; + } + /* Indicate support for various _OSC capabilities. */ if (pci_ext_cfg_avail()) flags |= OSC_EXT_PCI_CONFIG_SUPPORT; @@ -494,6 +517,7 @@ static int acpi_pci_root_add(struct acpi_device *device, flags = base_flags; } } + if (!pcie_ports_disabled && (flags & ACPI_PCIE_REQ_SUPPORT) == ACPI_PCIE_REQ_SUPPORT) { flags = OSC_PCI_EXPRESS_CAP_STRUCTURE_CONTROL @@ -514,54 +538,28 @@ static int acpi_pci_root_add(struct acpi_device *device, status = acpi_pci_osc_control_set(device->handle, &flags, OSC_PCI_EXPRESS_CAP_STRUCTURE_CONTROL); if (ACPI_SUCCESS(status)) { - is_osc_granted = true; dev_info(&device->dev, "ACPI _OSC control (0x%02x) granted\n", flags); + if (acpi_gbl_FADT.boot_flags & ACPI_FADT_NO_ASPM) { + /* + * We have ASPM control, but the FADT indicates + * that it's unsupported. Clear it. + */ + pcie_clear_aspm(root->bus); + } } else { - is_osc_granted = false; dev_info(&device->dev, "ACPI _OSC request failed (%s), " "returned control mask: 0x%02x\n", acpi_format_exception(status), flags); + pr_info("ACPI _OSC control for PCIe not granted, " + "disabling ASPM\n"); + pcie_no_aspm(); } } else { dev_info(&device->dev, - "Unable to request _OSC control " - "(_OSC support mask: 0x%02x)\n", flags); - } - - /* - * TBD: Need PCI interface for enumeration/configuration of roots. - */ - - mutex_lock(&acpi_pci_root_lock); - list_add_tail(&root->node, &acpi_pci_roots); - mutex_unlock(&acpi_pci_root_lock); - - /* - * Scan the Root Bridge - * -------------------- - * Must do this prior to any attempt to bind the root device, as the - * PCI namespace does not get created until this call is made (and - * thus the root bridge's pci_dev does not exist). - */ - root->bus = pci_acpi_scan_root(root); - if (!root->bus) { - printk(KERN_ERR PREFIX - "Bus %04x:%02x not present in PCI namespace\n", - root->segment, (unsigned int)root->secondary.start); - result = -ENODEV; - goto out_del_root; - } - - /* ASPM setting */ - if (is_osc_granted) { - if (acpi_gbl_FADT.boot_flags & ACPI_FADT_NO_ASPM) - pcie_clear_aspm(root->bus); - } else { - pr_info("ACPI _OSC control for PCIe not granted, " - "disabling ASPM\n"); - pcie_no_aspm(); + "Unable to request _OSC control " + "(_OSC support mask: 0x%02x)\n", flags); } pci_acpi_add_bus_pm_notifier(device, root->bus); diff --git a/drivers/eisa/pci_eisa.c b/drivers/eisa/pci_eisa.c index cdae207028a7..6c3fca97d346 100644 --- a/drivers/eisa/pci_eisa.c +++ b/drivers/eisa/pci_eisa.c @@ -19,10 +19,10 @@ /* There is only *one* pci_eisa device per machine, right ? */ static struct eisa_root_device pci_eisa_root; -static int __init pci_eisa_init(struct pci_dev *pdev, - const struct pci_device_id *ent) +static int __init pci_eisa_init(struct pci_dev *pdev) { - int rc; + int rc, i; + struct resource *res, *bus_res = NULL; if ((rc = pci_enable_device (pdev))) { printk (KERN_ERR "pci_eisa : Could not enable device %s\n", @@ -30,9 +30,30 @@ static int __init pci_eisa_init(struct pci_dev *pdev, return rc; } + /* + * The Intel 82375 PCI-EISA bridge is a subtractive-decode PCI + * device, so the resources available on EISA are the same as those + * available on the 82375 bus. This works the same as a PCI-PCI + * bridge in subtractive-decode mode (see pci_read_bridge_bases()). + * We assume other PCI-EISA bridges are similar. + * + * eisa_root_register() can only deal with a single io port resource, + * so we use the first valid io port resource. + */ + pci_bus_for_each_resource(pdev->bus, res, i) + if (res && (res->flags & IORESOURCE_IO)) { + bus_res = res; + break; + } + + if (!bus_res) { + dev_err(&pdev->dev, "No resources available\n"); + return -1; + } + pci_eisa_root.dev = &pdev->dev; - pci_eisa_root.res = pdev->bus->resource[0]; - pci_eisa_root.bus_base_addr = pdev->bus->resource[0]->start; + pci_eisa_root.res = bus_res; + pci_eisa_root.bus_base_addr = bus_res->start; pci_eisa_root.slots = EISA_MAX_SLOTS; pci_eisa_root.dma_mask = pdev->dma_mask; dev_set_drvdata(pci_eisa_root.dev, &pci_eisa_root); @@ -45,22 +66,26 @@ static int __init pci_eisa_init(struct pci_dev *pdev, return 0; } -static struct pci_device_id pci_eisa_pci_tbl[] = { - { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, - PCI_CLASS_BRIDGE_EISA << 8, 0xffff00, 0 }, - { 0, } -}; +/* + * We have to call pci_eisa_init_early() before pnpacpi_init()/isapnp_init(). + * Otherwise pnp resource will get enabled early and could prevent eisa + * to be initialized. + * Also need to make sure pci_eisa_init_early() is called after + * x86/pci_subsys_init(). + * So need to use subsys_initcall_sync with it. + */ +static int __init pci_eisa_init_early(void) +{ + struct pci_dev *dev = NULL; + int ret; -static struct pci_driver __refdata pci_eisa_driver = { - .name = "pci_eisa", - .id_table = pci_eisa_pci_tbl, - .probe = pci_eisa_init, -}; + for_each_pci_dev(dev) + if ((dev->class >> 8) == PCI_CLASS_BRIDGE_EISA) { + ret = pci_eisa_init(dev); + if (ret) + return ret; + } -static int __init pci_eisa_init_module (void) -{ - return pci_register_driver (&pci_eisa_driver); + return 0; } - -device_initcall(pci_eisa_init_module); -MODULE_DEVICE_TABLE(pci, pci_eisa_pci_tbl); +subsys_initcall_sync(pci_eisa_init_early); diff --git a/drivers/gpu/drm/nouveau/core/subdev/bios/base.c b/drivers/gpu/drm/nouveau/core/subdev/bios/base.c index e816f06637a7..0e2c1a4f1659 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/bios/base.c +++ b/drivers/gpu/drm/nouveau/core/subdev/bios/base.c @@ -248,6 +248,22 @@ nouveau_bios_shadow_pci(struct nouveau_bios *bios) } } +static void +nouveau_bios_shadow_platform(struct nouveau_bios *bios) +{ + struct pci_dev *pdev = nv_device(bios)->pdev; + size_t size; + + void __iomem *rom = pci_platform_rom(pdev, &size); + if (rom && size) { + bios->data = kmalloc(size, GFP_KERNEL); + if (bios->data) { + memcpy_fromio(bios->data, rom, size); + bios->size = size; + } + } +} + static int nouveau_bios_score(struct nouveau_bios *bios, const bool writeable) { @@ -288,6 +304,7 @@ nouveau_bios_shadow(struct nouveau_bios *bios) { "PROM", nouveau_bios_shadow_prom, false, 0, 0, NULL }, { "ACPI", nouveau_bios_shadow_acpi, true, 0, 0, NULL }, { "PCIROM", nouveau_bios_shadow_pci, true, 0, 0, NULL }, + { "PLATFORM", nouveau_bios_shadow_platform, true, 0, 0, NULL }, {} }; struct methods *mthd, *best; diff --git a/drivers/gpu/drm/radeon/radeon_bios.c b/drivers/gpu/drm/radeon/radeon_bios.c index b8015913d382..fa3c56fba294 100644 --- a/drivers/gpu/drm/radeon/radeon_bios.c +++ b/drivers/gpu/drm/radeon/radeon_bios.c @@ -99,6 +99,29 @@ static bool radeon_read_bios(struct radeon_device *rdev) return true; } +static bool radeon_read_platform_bios(struct radeon_device *rdev) +{ + uint8_t __iomem *bios; + size_t size; + + rdev->bios = NULL; + + bios = pci_platform_rom(rdev->pdev, &size); + if (!bios) { + return false; + } + + if (size == 0 || bios[0] != 0x55 || bios[1] != 0xaa) { + return false; + } + rdev->bios = kmemdup(bios, size, GFP_KERNEL); + if (rdev->bios == NULL) { + return false; + } + + return true; +} + #ifdef CONFIG_ACPI /* ATRM is used to get the BIOS on the discrete cards in * dual-gpu systems. @@ -620,6 +643,9 @@ bool radeon_get_bios(struct radeon_device *rdev) if (r == false) { r = radeon_read_disabled_bios(rdev); } + if (r == false) { + r = radeon_read_platform_bios(rdev); + } if (r == false || rdev->bios == NULL) { DRM_ERROR("Unable to locate a BIOS ROM\n"); rdev->bios = NULL; diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c index dee5dddaa292..5147c210df52 100644 --- a/drivers/pci/pci-acpi.c +++ b/drivers/pci/pci-acpi.c @@ -53,14 +53,15 @@ static void pci_acpi_wake_dev(acpi_handle handle, u32 event, void *context) return; } - if (!pci_dev->pm_cap || !pci_dev->pme_support - || pci_check_pme_status(pci_dev)) { - if (pci_dev->pme_poll) - pci_dev->pme_poll = false; + /* Clear PME Status if set. */ + if (pci_dev->pme_support) + pci_check_pme_status(pci_dev); - pci_wakeup_event(pci_dev); - pm_runtime_resume(&pci_dev->dev); - } + if (pci_dev->pme_poll) + pci_dev->pme_poll = false; + + pci_wakeup_event(pci_dev); + pm_runtime_resume(&pci_dev->dev); if (pci_dev->subordinate) pci_pme_wakeup_bus(pci_dev->subordinate); diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c index 1fa1e482a999..79277fb36c6b 100644 --- a/drivers/pci/pci-driver.c +++ b/drivers/pci/pci-driver.c @@ -390,9 +390,10 @@ static void pci_device_shutdown(struct device *dev) /* * Turn off Bus Master bit on the device to tell it to not - * continue to do DMA + * continue to do DMA. Don't touch devices in D3cold or unknown states. */ - pci_clear_master(pci_dev); + if (pci_dev->current_state <= PCI_D3hot) + pci_clear_master(pci_dev); } #ifdef CONFIG_PM diff --git a/drivers/pci/pcie/portdrv_pci.c b/drivers/pci/pcie/portdrv_pci.c index 08c243ab034e..ed4d09498337 100644 --- a/drivers/pci/pcie/portdrv_pci.c +++ b/drivers/pci/pcie/portdrv_pci.c @@ -185,14 +185,6 @@ static const struct dev_pm_ops pcie_portdrv_pm_ops = { #endif /* !PM */ /* - * PCIe port runtime suspend is broken for some chipsets, so use a - * black list to disable runtime PM for these chipsets. - */ -static const struct pci_device_id port_runtime_pm_black_list[] = { - { /* end: all zeroes */ } -}; - -/* * pcie_portdrv_probe - Probe PCI-Express port devices * @dev: PCI-Express port device being probed * @@ -225,16 +217,11 @@ static int pcie_portdrv_probe(struct pci_dev *dev, * it by default. */ dev->d3cold_allowed = false; - if (!pci_match_id(port_runtime_pm_black_list, dev)) - pm_runtime_put_noidle(&dev->dev); - return 0; } static void pcie_portdrv_remove(struct pci_dev *dev) { - if (!pci_match_id(port_runtime_pm_black_list, dev)) - pm_runtime_get_noresume(&dev->dev); pcie_port_device_remove(dev); pci_disable_device(dev); } diff --git a/drivers/pci/rom.c b/drivers/pci/rom.c index b41ac7756a4b..c5d0a08a8747 100644 --- a/drivers/pci/rom.c +++ b/drivers/pci/rom.c @@ -100,27 +100,6 @@ size_t pci_get_rom_size(struct pci_dev *pdev, void __iomem *rom, size_t size) return min((size_t)(image - rom), size); } -static loff_t pci_find_rom(struct pci_dev *pdev, size_t *size) -{ - struct resource *res = &pdev->resource[PCI_ROM_RESOURCE]; - loff_t start; - - /* assign the ROM an address if it doesn't have one */ - if (res->parent == NULL && pci_assign_resource(pdev, PCI_ROM_RESOURCE)) - return 0; - start = pci_resource_start(pdev, PCI_ROM_RESOURCE); - *size = pci_resource_len(pdev, PCI_ROM_RESOURCE); - - if (*size == 0) - return 0; - - /* Enable ROM space decodes */ - if (pci_enable_rom(pdev)) - return 0; - - return start; -} - /** * pci_map_rom - map a PCI ROM to kernel space * @pdev: pointer to pci device struct @@ -135,7 +114,7 @@ static loff_t pci_find_rom(struct pci_dev *pdev, size_t *size) void __iomem *pci_map_rom(struct pci_dev *pdev, size_t *size) { struct resource *res = &pdev->resource[PCI_ROM_RESOURCE]; - loff_t start = 0; + loff_t start; void __iomem *rom; /* @@ -154,21 +133,21 @@ void __iomem *pci_map_rom(struct pci_dev *pdev, size_t *size) return (void __iomem *)(unsigned long) pci_resource_start(pdev, PCI_ROM_RESOURCE); } else { - start = pci_find_rom(pdev, size); - } - } + /* assign the ROM an address if it doesn't have one */ + if (res->parent == NULL && + pci_assign_resource(pdev,PCI_ROM_RESOURCE)) + return NULL; + start = pci_resource_start(pdev, PCI_ROM_RESOURCE); + *size = pci_resource_len(pdev, PCI_ROM_RESOURCE); + if (*size == 0) + return NULL; - /* - * Some devices may provide ROMs via a source other than the BAR - */ - if (!start && pdev->rom && pdev->romlen) { - *size = pdev->romlen; - return phys_to_virt(pdev->rom); + /* Enable ROM space decodes */ + if (pci_enable_rom(pdev)) + return NULL; + } } - if (!start) - return NULL; - rom = ioremap(start, *size); if (!rom) { /* restore enable if ioremap fails */ @@ -202,8 +181,7 @@ void pci_unmap_rom(struct pci_dev *pdev, void __iomem *rom) if (res->flags & (IORESOURCE_ROM_COPY | IORESOURCE_ROM_BIOS_COPY)) return; - if (!pdev->rom || !pdev->romlen) - iounmap(rom); + iounmap(rom); /* Disable again before continuing, leave enabled if pci=rom */ if (!(res->flags & (IORESOURCE_ROM_ENABLE | IORESOURCE_ROM_SHADOW))) @@ -227,7 +205,24 @@ void pci_cleanup_rom(struct pci_dev *pdev) } } +/** + * pci_platform_rom - provides a pointer to any ROM image provided by the + * platform + * @pdev: pointer to pci device struct + * @size: pointer to receive size of pci window over ROM + */ +void __iomem *pci_platform_rom(struct pci_dev *pdev, size_t *size) +{ + if (pdev->rom && pdev->romlen) { + *size = pdev->romlen; + return phys_to_virt((phys_addr_t)pdev->rom); + } + + return NULL; +} + EXPORT_SYMBOL(pci_map_rom); EXPORT_SYMBOL(pci_unmap_rom); EXPORT_SYMBOL_GPL(pci_enable_rom); EXPORT_SYMBOL_GPL(pci_disable_rom); +EXPORT_SYMBOL(pci_platform_rom); diff --git a/include/linux/pci.h b/include/linux/pci.h index 2461033a7987..710067f3618c 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -916,6 +916,7 @@ void pci_disable_rom(struct pci_dev *pdev); void __iomem __must_check *pci_map_rom(struct pci_dev *pdev, size_t *size); void pci_unmap_rom(struct pci_dev *pdev, void __iomem *rom); size_t pci_get_rom_size(struct pci_dev *pdev, void __iomem *rom, size_t size); +void __iomem __must_check *pci_platform_rom(struct pci_dev *pdev, size_t *size); /* Power management related routines */ int pci_save_state(struct pci_dev *dev); |