From eca0d4676d8e29c209ddce0c0c1755472ffc70a6 Mon Sep 17 00:00:00 2001 From: Matthew Garrett Date: Wed, 5 Dec 2012 14:33:27 -0700 Subject: PCI: Add pcibios_add_device Platforms may want to provide architecture-specific functionality during PCI enumeration. Add a pcibios_add_device() call that architectures can override to do so. Signed-off-by: Matthew Garrett Signed-off-by: Bjorn Helgaas Tested-by: Seth Forshee --- drivers/pci/bus.c | 5 +++++ drivers/pci/pci.c | 13 +++++++++++++ 2 files changed, 18 insertions(+) (limited to 'drivers') diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c index 6241fd05bd41..4f22fa16a3ba 100644 --- a/drivers/pci/bus.c +++ b/drivers/pci/bus.c @@ -170,6 +170,11 @@ int pci_bus_add_device(struct pci_dev *dev) int retval; pci_fixup_device(pci_fixup_final, dev); + + retval = pcibios_add_device(dev); + if (retval) + return retval; + retval = device_add(&dev->dev); if (retval) return retval; diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 54858838f098..fa0ddd51a216 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -1333,6 +1333,19 @@ void pcim_pin_device(struct pci_dev *pdev) dr->pinned = 1; } +/* + * pcibios_add_device - provide arch specific hooks when adding device dev + * @dev: the PCI device being added + * + * Permits the platform to provide architecture specific functionality when + * devices are added. This is the default implementation. Architecture + * implementations can override this. + */ +int __weak pcibios_add_device (struct pci_dev *dev) +{ + return 0; +} + /** * pcibios_disable_device - disable arch specific PCI resources for device dev * @dev: the PCI device to disable -- cgit v1.2.3 From 84c1b80e32638f881c17390dfe88143e5cd3f583 Mon Sep 17 00:00:00 2001 From: Matthew Garrett Date: Wed, 5 Dec 2012 14:33:27 -0700 Subject: PCI: Add support for non-BAR ROMs Platforms may provide their own mechanisms for obtaining ROMs. Add support for using data provided by the platform in that case. Signed-off-by: Matthew Garrett Signed-off-by: Bjorn Helgaas Tested-by: Seth Forshee --- drivers/pci/rom.c | 11 +++++++++-- include/linux/pci.h | 2 ++ 2 files changed, 11 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/pci/rom.c b/drivers/pci/rom.c index 0b3037ab8b93..3a3828fbc879 100644 --- a/drivers/pci/rom.c +++ b/drivers/pci/rom.c @@ -117,12 +117,18 @@ void __iomem *pci_map_rom(struct pci_dev *pdev, size_t *size) loff_t start; 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((phys_addr_t)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. */ - if (res->flags & IORESOURCE_ROM_SHADOW) { + } else if (res->flags & IORESOURCE_ROM_SHADOW) { /* primary video rom always starts here */ start = (loff_t)0xC0000; *size = 0x20000; /* cover C000:0 through E000:0 */ @@ -181,7 +187,8 @@ void pci_unmap_rom(struct pci_dev *pdev, void __iomem *rom) if (res->flags & (IORESOURCE_ROM_COPY | IORESOURCE_ROM_BIOS_COPY)) return; - iounmap(rom); + if (!pdev->rom || !pdev->romlen) + iounmap(rom); /* Disable again before continuing, leave enabled if pci=rom */ if (!(res->flags & (IORESOURCE_ROM_ENABLE | IORESOURCE_ROM_SHADOW))) diff --git a/include/linux/pci.h b/include/linux/pci.h index 195c2593bd31..f116b2d859dc 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -333,6 +333,8 @@ struct pci_dev { }; struct pci_ats *ats; /* Address Translation Service */ #endif + void *rom; /* Physical pointer to ROM if it's not from the BAR */ + size_t romlen; /* Length of ROM if it's not from the BAR */ }; static inline struct pci_dev *pci_physfn(struct pci_dev *dev) -- cgit v1.2.3