diff options
| author |   dean gaudet <dean@arctic.org> | 2007-08-10 22:30:59 +0200 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-08-11 15:58:12 -0700 |
| commit | 3320ad994afb2c44ad34b3b34c3c5cf0da297331 (patch) | |
| tree | 7eb9c73a0513f96a7af3c598cd3103cbf4da5043 /arch/x86_64/pci/mmconfig.c | |
| parent | changing include/asm-generic/pgtable.h for non-mmu (diff) | |
| download | linux-dev-3320ad994afb2c44ad34b3b34c3c5cf0da297331.tar.xz linux-dev-3320ad994afb2c44ad34b3b34c3c5cf0da297331.zip | |
x86: Work around mmio config space quirk on AMD Fam10h
Some broken devices have been discovered to require %al/%ax/%eax registers
for MMIO config space accesses. Modify mmconfig.c to use these registers
explicitly (rather than modify the global readb/writeb/etc inlines).
AK: also changed i386 to always use eax
AK: moved change to extended space probing to different patch
AK: reworked with inlines according to Linus' requirements.
AK: improve comments.
Signed-off-by: dean gaudet <dean@arctic.org>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/x86_64/pci/mmconfig.c')
| -rw-r--r-- | arch/x86_64/pci/mmconfig.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/arch/x86_64/pci/mmconfig.c b/arch/x86_64/pci/mmconfig.c index 65d82736987e..4095e4d66a1d 100644 --- a/arch/x86_64/pci/mmconfig.c +++ b/arch/x86_64/pci/mmconfig.c @@ -66,13 +66,13 @@ static int pci_mmcfg_read(unsigned int seg, unsigned int bus, switch (len) { case 1: - *value = readb(addr + reg); + *value = mmio_config_readb(addr + reg); break; case 2: - *value = readw(addr + reg); + *value = mmio_config_readw(addr + reg); break; case 4: - *value = readl(addr + reg); + *value = mmio_config_readl(addr + reg); break; } @@ -94,13 +94,13 @@ static int pci_mmcfg_write(unsigned int seg, unsigned int bus, switch (len) { case 1: - writeb(value, addr + reg); + mmio_config_writeb(addr + reg, value); break; case 2: - writew(value, addr + reg); + mmio_config_writew(addr + reg, value); break; case 4: - writel(value, addr + reg); + mmio_config_writel(addr + reg, value); break; } |