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MdeModulePkg PciBusDxe: Allows PCI device drivers to set the EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE attribute for a PCI device. 

Signed-off-by: rsun3
Reviewed-by: mdkinney


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12545 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
rsun3 2011-10-18 03:33:03 +00:00
parent 515327a3e3
commit 5a3a6aa787
2 changed files with 8 additions and 4 deletions
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6
MdeModulePkg/Bus/Pci/PciBusDxe/PciEnumeratorSupport.c
View File

@ -1130,8 +1130,12 @@ DetermineDeviceAttribute (
if (EFI_ERROR (Status)) {
return Status;
}
//
// Assume the PCI Root Bridge supports DAC
//
PciIoDevice->Supports |= (EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE |
EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM);
EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM |
EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE);
} else {

6
MdeModulePkg/Bus/Pci/PciBusDxe/PciIo.c
View File

@ -1305,11 +1305,11 @@ ModifyRootBridgeAttributes (
}
//
// Mask off EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE &
// EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM, which are not supported by PCI root bridge.
// Mask off attributes not supported by PCI root bridge.
//
Attributes &= ~(UINT64)(EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE |
EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM);
EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM |
EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE);
//
// Record the new attribute of the Root Bridge