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nouveau: Attempt to use platform-provided ROM image

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Some platforms only provide their PCI ROM via a platform-specific interface.
Fall back to attempting that if all other sources fail.

Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Matthew Garrett 2013-03-26 17:25:55 -04:00 committed by Bjorn Helgaas
parent fffe01f7a7
commit 121cdf08cc
1 changed files with 17 additions and 0 deletions
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17
drivers/gpu/drm/nouveau/core/subdev/bios/base.c
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@ -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;