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_64.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_64.c')
| -rw-r--r-- | arch/x86/pci/mmconfig_64.c | 23 |
1 files changed, 4 insertions, 19 deletions
diff --git a/arch/x86/pci/mmconfig_64.c b/arch/x86/pci/mmconfig_64.c index cfa6cdb6d26..e783841bd1d 100644 --- a/arch/x86/pci/mmconfig_64.c +++ b/arch/x86/pci/mmconfig_64.c @@ -14,28 +14,13 @@ #define PREFIX "PCI: " -static char __iomem *get_virt(unsigned int seg, unsigned bus) -{ - struct pci_mmcfg_region *cfg; - - list_for_each_entry(cfg, &pci_mmcfg_list, list) - if (cfg->segment == seg && - (cfg->start_bus <= bus) && - (cfg->end_bus >= bus)) - return cfg->virt; - - /* Fall back to type 0 */ - return NULL; -} - static char __iomem *pci_dev_base(unsigned int seg, unsigned int bus, unsigned int devfn) { - char __iomem *addr; + struct pci_mmcfg_region *cfg = pci_mmconfig_lookup(seg, bus); - addr = get_virt(seg, bus); - if (!addr) - return NULL; - return addr + (PCI_MMCFG_BUS_OFFSET(bus) | (devfn << 12)); + if (cfg && cfg->virt) + return cfg->virt + (PCI_MMCFG_BUS_OFFSET(bus) | (devfn << 12)); + return NULL; } static int pci_mmcfg_read(unsigned int seg, unsigned int bus, |