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| author | Eiichiro Oiwa <eiichiro.oiwa.nm@hitachi.com> | 2006-10-23 08:14:07 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2006-10-27 20:20:33 +0200 |
| commit | 6b5c76b8e2ff204fa8d7201acce461188873bf2b (patch) | |
| tree | 6e3864c98fdcca8aa5609ad799349513d9372a10 /drivers | |
| parent | acpiphp: fix latch status (diff) | |
| download | linux-6b5c76b8e2ff204fa8d7201acce461188873bf2b.tar.xz linux-6b5c76b8e2ff204fa8d7201acce461188873bf2b.zip | |
PCI: fix pci_fixup_video as it blows up on sparc64
This reverts much of the original pci_fixup_video change and makes it
work for all arches that need it.
fixed, and tested on x86, x86_64 and IA64 dig.
Signed-off-by: Eiichiro Oiwa <eiichiro.oiwa.nm@hitachi.com>
Acked-by: David Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/pci/quirks.c | 46 | ||||
| -rw-r--r-- | drivers/pci/rom.c | 5 |
2 files changed, 3 insertions, 48 deletions
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index e8a7f1b1b2bc..687ab4a0c6c6 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -1619,52 +1619,6 @@ static void __devinit fixup_rev1_53c810(struct pci_dev* dev) } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C810, fixup_rev1_53c810); -/* - * Fixup to mark boot BIOS video selected by BIOS before it changes - * - * From information provided by "Jon Smirl" <jonsmirl@gmail.com> - * - * The standard boot ROM sequence for an x86 machine uses the BIOS - * to select an initial video card for boot display. This boot video - * card will have it's BIOS copied to C0000 in system RAM. - * IORESOURCE_ROM_SHADOW is used to associate the boot video - * card with this copy. On laptops this copy has to be used since - * the main ROM may be compressed or combined with another image. - * See pci_map_rom() for use of this flag. IORESOURCE_ROM_SHADOW - * is marked here since the boot video device will be the only enabled - * video device at this point. - */ - -static void __devinit fixup_video(struct pci_dev *pdev) -{ - struct pci_dev *bridge; - struct pci_bus *bus; - u16 config; - - if ((pdev->class >> 8) != PCI_CLASS_DISPLAY_VGA) - return; - - /* Is VGA routed to us? */ - bus = pdev->bus; - while (bus) { - bridge = bus->self; - if (bridge) { - pci_read_config_word(bridge, PCI_BRIDGE_CONTROL, - &config); - if (!(config & PCI_BRIDGE_CTL_VGA)) - return; - } - bus = bus->parent; - } - pci_read_config_word(pdev, PCI_COMMAND, &config); - if (config & (PCI_COMMAND_IO | PCI_COMMAND_MEMORY)) { - pdev->resource[PCI_ROM_RESOURCE].flags |= IORESOURCE_ROM_SHADOW; - printk(KERN_DEBUG "Boot video device is %s\n", pci_name(pdev)); - } -} -DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, fixup_video); - - static void pci_do_fixups(struct pci_dev *dev, struct pci_fixup *f, struct pci_fixup *end) { while (f < end) { diff --git a/drivers/pci/rom.c b/drivers/pci/rom.c index 43e4a49f2cc4..e1dcefc69bb4 100644 --- a/drivers/pci/rom.c +++ b/drivers/pci/rom.c @@ -72,8 +72,9 @@ void __iomem *pci_map_rom(struct pci_dev *pdev, size_t *size) int last_image; /* - * IORESOURCE_ROM_SHADOW set if the VGA enable bit of the Bridge Control - * register is set for embedded VGA. + * 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) { /* primary video rom always starts here */ |