diff options
| author | Mauro Carvalho Chehab <mchehab@infradead.org> | 2006-02-06 10:43:13 -0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2006-02-06 10:43:13 -0200 |
| commit | b2faf597d93bdf5e2d12d93ea0815935a73f749e (patch) | |
| tree | 1876616290ff282b8a0814e2429d23e0104f3701 /arch/x86_64/pci/mmconfig.c | |
| parent | 638e174688f58200d0deb7435093435e7d737b09 (diff) | |
| parent | 410c05427a69f53851637ccb85c2212131409fbd (diff) | |
Merge branch 'origin'
Diffstat (limited to 'arch/x86_64/pci/mmconfig.c')
| -rw-r--r-- | arch/x86_64/pci/mmconfig.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/arch/x86_64/pci/mmconfig.c b/arch/x86_64/pci/mmconfig.c index f16c0d57c552..b4a3fe4ec249 100644 --- a/arch/x86_64/pci/mmconfig.c +++ b/arch/x86_64/pci/mmconfig.c @@ -29,11 +29,8 @@ static char __iomem *get_virt(unsigned int seg, unsigned bus) while (1) { ++cfg_num; - if (cfg_num >= pci_mmcfg_config_num) { - /* Not found - fall back to type 1. This happens - e.g. on the internal devices of a K8 northbridge. */ - return NULL; - } + if (cfg_num >= pci_mmcfg_config_num) + break; cfg = pci_mmcfg_virt[cfg_num].cfg; if (cfg->pci_segment_group_number != seg) continue; @@ -41,6 +38,18 @@ static char __iomem *get_virt(unsigned int seg, unsigned bus) (cfg->end_bus_number >= bus)) return pci_mmcfg_virt[cfg_num].virt; } + + /* Handle more broken MCFG tables on Asus etc. + They only contain a single entry for bus 0-0. Assume + this applies to all busses. */ + cfg = &pci_mmcfg_config[0]; + if (pci_mmcfg_config_num == 1 && + cfg->pci_segment_group_number == 0 && + (cfg->start_bus_number | cfg->end_bus_number) == 0) + return pci_mmcfg_virt[0].virt; + + /* Fall back to type 0 */ + return 0; } static char __iomem *pci_dev_base(unsigned int seg, unsigned int bus, unsigned int devfn) |