diff options
| author | Adrian Bunk <bunk@stusta.de> | 2006-02-03 23:49:49 +0100 |
|---|---|---|
| committer | Adrian Bunk <bunk@r063144.stusta.swh.mhn.de> | 2006-02-03 23:49:49 +0100 |
| commit | 01d206a7c1167639f6ca6dac22140fbdca017558 (patch) | |
| tree | bc3ccf1a8140a7f787c4728cfa4c30e65ad56eb2 /arch/x86_64/pci/mmconfig.c | |
| parent | 9c4b562abc9005e4b413de02c85d3d29da707cba (diff) | |
| parent | d6c8f6aaa1d7f68c1e6471ab0839d9047cdd159f (diff) | |
Merge with git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
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..00d4ddbf980c 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 cfg->base_address; + + /* Fall back to type 0 */ + return 0; } static char __iomem *pci_dev_base(unsigned int seg, unsigned int bus, unsigned int devfn) |