diff options
Diffstat (limited to 'drivers/pci/rom.c')
| -rw-r--r-- | drivers/pci/rom.c | 43 |
1 files changed, 27 insertions, 16 deletions
diff --git a/drivers/pci/rom.c b/drivers/pci/rom.c index ab886b7ee32..f955edb9bea 100644 --- a/drivers/pci/rom.c +++ b/drivers/pci/rom.c @@ -31,13 +31,14 @@ int pci_enable_rom(struct pci_dev *pdev) if (!res->flags) return -1; - pcibios_resource_to_bus(pdev, ®ion, res); + pcibios_resource_to_bus(pdev->bus, ®ion, res); pci_read_config_dword(pdev, pdev->rom_base_reg, &rom_addr); rom_addr &= ~PCI_ROM_ADDRESS_MASK; rom_addr |= region.start | PCI_ROM_ADDRESS_ENABLE; pci_write_config_dword(pdev, pdev->rom_base_reg, rom_addr); return 0; } +EXPORT_SYMBOL_GPL(pci_enable_rom); /** * pci_disable_rom - disable ROM decoding for a PCI device @@ -53,6 +54,7 @@ void pci_disable_rom(struct pci_dev *pdev) rom_addr &= ~PCI_ROM_ADDRESS_ENABLE; pci_write_config_dword(pdev, pdev->rom_base_reg, rom_addr); } +EXPORT_SYMBOL_GPL(pci_disable_rom); /** * pci_get_rom_size - obtain the actual size of the ROM image @@ -118,17 +120,11 @@ void __iomem *pci_map_rom(struct pci_dev *pdev, size_t *size) void __iomem *rom; /* - * Some devices may provide ROMs via a source other than the BAR - */ - if (pdev->rom && pdev->romlen) { - *size = pdev->romlen; - return phys_to_virt(pdev->rom); - /* * IORESOURCE_ROM_SHADOW set on x86, x86_64 and IA64 supports legacy * memory map if the VGA enable bit of the Bridge Control register is * set for embedded VGA. */ - } else if (res->flags & IORESOURCE_ROM_SHADOW) { + if (res->flags & IORESOURCE_ROM_SHADOW) { /* primary video rom always starts here */ start = (loff_t)0xC0000; *size = 0x20000; /* cover C000:0 through E000:0 */ @@ -141,7 +137,7 @@ void __iomem *pci_map_rom(struct pci_dev *pdev, size_t *size) } else { /* assign the ROM an address if it doesn't have one */ if (res->parent == NULL && - pci_assign_resource(pdev,PCI_ROM_RESOURCE)) + 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); @@ -172,6 +168,7 @@ void __iomem *pci_map_rom(struct pci_dev *pdev, size_t *size) *size = pci_get_rom_size(pdev, rom, *size); return rom; } +EXPORT_SYMBOL(pci_map_rom); /** * pci_unmap_rom - unmap the ROM from kernel space @@ -187,13 +184,13 @@ 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))) pci_disable_rom(pdev); } +EXPORT_SYMBOL(pci_unmap_rom); /** * pci_cleanup_rom - free the ROM copy created by pci_map_rom_copy @@ -204,15 +201,29 @@ void pci_unmap_rom(struct pci_dev *pdev, void __iomem *rom) void pci_cleanup_rom(struct pci_dev *pdev) { struct resource *res = &pdev->resource[PCI_ROM_RESOURCE]; + if (res->flags & IORESOURCE_ROM_COPY) { - kfree((void*)(unsigned long)res->start); + kfree((void *)(unsigned long)res->start); + res->flags |= IORESOURCE_UNSET; res->flags &= ~IORESOURCE_ROM_COPY; res->start = 0; res->end = 0; } } -EXPORT_SYMBOL(pci_map_rom); -EXPORT_SYMBOL(pci_unmap_rom); -EXPORT_SYMBOL_GPL(pci_enable_rom); -EXPORT_SYMBOL_GPL(pci_disable_rom); +/** + * 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_platform_rom); |