diff options
| author |   Yu Zhao <yu.zhao@intel.com> | 2008-11-22 02:41:27 +0800 |
|---|---|---|
| committer |   Jesse Barnes <jbarnes@virtuousgeek.org> | 2009-01-07 11:13:04 -0800 |
| commit | 613e7ed6f72b1a115f7ece8ce1b66cf095de1348 (patch) | |
| tree | 2af16f01cbf78f1de6b858788091a72fa57af6c8 /drivers/pci/setup-res.c | |
| parent | PCI: allow pci_alloc_child_bus() to handle a NULL bridge (diff) | |
| download | linux-dev-613e7ed6f72b1a115f7ece8ce1b66cf095de1348.tar.xz linux-dev-613e7ed6f72b1a115f7ece8ce1b66cf095de1348.zip | |
PCI: add a new function to map BAR offsets
Add a function to map a given resource number to a corresponding
register so drivers can get the offset and type of device specific BARs.
Signed-off-by: Yu Zhao <yu.zhao@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers/pci/setup-res.c')
| -rw-r--r-- | drivers/pci/setup-res.c | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/drivers/pci/setup-res.c b/drivers/pci/setup-res.c index 3c5203ff53c7..32e8d88a4619 100644 --- a/drivers/pci/setup-res.c +++ b/drivers/pci/setup-res.c @@ -31,6 +31,7 @@ void pci_update_resource(struct pci_dev *dev, int resno) struct pci_bus_region region; u32 new, check, mask; int reg; + enum pci_bar_type type; struct resource *res = dev->resource + resno; /* @@ -62,17 +63,13 @@ void pci_update_resource(struct pci_dev *dev, int resno) else mask = (u32)PCI_BASE_ADDRESS_MEM_MASK; - if (resno < 6) { - reg = PCI_BASE_ADDRESS_0 + 4 * resno; - } else if (resno == PCI_ROM_RESOURCE) { + reg = pci_resource_bar(dev, resno, &type); + if (!reg) + return; + if (type != pci_bar_unknown) { if (!(res->flags & IORESOURCE_ROM_ENABLE)) return; new |= PCI_ROM_ADDRESS_ENABLE; - reg = dev->rom_base_reg; - } else { - /* Hmm, non-standard resource. */ - - return; /* kill uninitialised var warning */ } pci_write_config_dword(dev, reg, new); |