diff options
| author | rsun3 <rsun3@6f19259b-4bc3-4df7-8a09-765794883524> | 2009-12-24 11:58:04 +0000 |
|---|---|---|
| committer | rsun3 <rsun3@6f19259b-4bc3-4df7-8a09-765794883524> | 2009-12-24 11:58:04 +0000 |
| commit | 1ef267831621d709d685c6e65856bdf711ea7b79 (patch) | |
| tree | 2567e917b1103dd46241552267d0d2ff05248900 /MdeModulePkg/Bus/Pci/PciBusDxe/PciLib.c | |
| parent | 423401f9ea83daffc754864b922f56f06a84cbab (diff) | |
Update PCI bus driver to support non-standard PCI to PCI bridge I/O window alignment, such as 2K/1K/512 byte. Feature PCD PcdPciBridgeIoAlignmentProbe is introduced to turn on/off this feature.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9598 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdeModulePkg/Bus/Pci/PciBusDxe/PciLib.c')
| -rw-r--r-- | MdeModulePkg/Bus/Pci/PciBusDxe/PciLib.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/MdeModulePkg/Bus/Pci/PciBusDxe/PciLib.c b/MdeModulePkg/Bus/Pci/PciBusDxe/PciLib.c index f40000672f..d01a1f8f4b 100644 --- a/MdeModulePkg/Bus/Pci/PciBusDxe/PciLib.c +++ b/MdeModulePkg/Bus/Pci/PciBusDxe/PciLib.c @@ -236,10 +236,14 @@ PciHostBridgeResourceAllocator ( // enumerator. Several resource tree was created
//
+ //
+ // If non-stardard PCI Bridge I/O window alignment is supported,
+ // set I/O aligment to minimum possible alignment for root bridge.
+ //
IoBridge = CreateResourceNode (
RootBridgeDev,
0,
- 0xFFF,
+ FeaturePcdGet (PcdPciBridgeIoAlignmentProbe) ? 0x1FF: 0xFFF,
0,
PciBarTypeIo16,
PciResUsageTypical
|