diff options
| author | Bjorn Helgaas <bjorn.helgaas@hp.com> | 2009-11-13 17:35:04 -0700 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2009-11-24 15:30:36 -0800 |
| commit | f6e1d8cc38b3776038fb15d3acc82ed8bb552f82 (patch) | |
| tree | d6ff3745b8f3843bad4cf284e653e38ba3b0a693 /arch/x86/pci/mmconfig-shared.c | |
| parent | 8c57786ad3d921713c7ad8e44132aa537a1d0fec (diff) | |
x86/PCI: MMCONFIG: add lookup function
This patch factors out the search for an MMCONFIG region, which was
previously implemented in both mmconfig_32 and mmconfig_64. No functional
change.
Reviewed-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'arch/x86/pci/mmconfig-shared.c')
| -rw-r--r-- | arch/x86/pci/mmconfig-shared.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/x86/pci/mmconfig-shared.c b/arch/x86/pci/mmconfig-shared.c index 71d69b88fa3..b19d1e54201 100644 --- a/arch/x86/pci/mmconfig-shared.c +++ b/arch/x86/pci/mmconfig-shared.c @@ -97,6 +97,18 @@ static __init struct pci_mmcfg_region *pci_mmconfig_add(int segment, int start, return new; } +struct pci_mmcfg_region *pci_mmconfig_lookup(int segment, int bus) +{ + struct pci_mmcfg_region *cfg; + + list_for_each_entry(cfg, &pci_mmcfg_list, list) + if (cfg->segment == segment && + cfg->start_bus <= bus && bus <= cfg->end_bus) + return cfg; + + return NULL; +} + static const char __init *pci_mmcfg_e7520(void) { u32 win; |