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Remove the special logic on EFI_PCI_DEVICE_ENABLE in PciBus driver. And update drivers that use this macro. The reason is that

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PciIoAttributes() in PciIo.c treats EFI_PCI_DEVICE_ENABLE specially so that when EFI_PCI_DEVICE_ENABLE is passed in, only the supported bits of driver will be enabled. Now many drivers use EFI_PCI_DEVICE_ENABLE to enable PCI device even if some of them don't support some of the attributes like EFI_PCI_IO_ATTRIBUTE_MEMORY. This doesn't conform to UEFI 2.0 spec.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4115 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
lgao4
2007-10-15 07:44:27 +00:00
parent c8c6d794df
commit 96f6af14d6
6 changed files with 111 additions and 40 deletions
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40
MdeModulePkg/Bus/Pci/EhciDxe/Ehci.c
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@@ -1491,6 +1491,7 @@ EhcDriverBindingStart (
EFI_STATUS Status;
USB2_HC_DEV *Ehc;
EFI_PCI_IO_PROTOCOL *PciIo;
UINT64 Supports;
//
// Open the PciIo Protocol, then enable the USB host controller
@@ -1511,10 +1512,19 @@ EhcDriverBindingStart (
Status = PciIo->Attributes (
PciIo,
EfiPciIoAttributeOperationEnable,
EFI_PCI_DEVICE_ENABLE,
NULL
EfiPciIoAttributeOperationSupported,
0,
&Supports
);
if (!EFI_ERROR (Status)) {
Supports &= EFI_PCI_DEVICE_ENABLE;
Status = PciIo->Attributes (
PciIo,
EfiPciIoAttributeOperationEnable,
Supports,
NULL
);
}
if (EFI_ERROR (Status)) {
EHC_ERROR (("EhcDriverBindingStart: failed to enable controller\n"));
@@ -1643,6 +1653,7 @@ EhcDriverBindingStop (
EFI_USB2_HC_PROTOCOL *Usb2Hc;
EFI_PCI_IO_PROTOCOL *PciIo;
USB2_HC_DEV *Ehc;
UINT64 Supports;
//
// Test whether the Controller handler passed in is a valid
@@ -1695,12 +1706,21 @@ EhcDriverBindingStop (
//
// Disable the USB Host Controller
//
PciIo->Attributes (
PciIo,
EfiPciIoAttributeOperationDisable,
EFI_PCI_DEVICE_ENABLE,
NULL
);
Status = PciIo->Attributes (
PciIo,
EfiPciIoAttributeOperationSupported,
0,
&Supports
);
if (!EFI_ERROR (Status)) {
Supports &= EFI_PCI_DEVICE_ENABLE;
Status = PciIo->Attributes (
PciIo,
EfiPciIoAttributeOperationDisable,
Supports,
NULL
);
}
gBS->CloseProtocol (
Controller,
@@ -1710,7 +1730,7 @@ EhcDriverBindingStop (
);
gBS->FreePool (Ehc);
return Status;
return EFI_SUCCESS;
}
EFI_DRIVER_BINDING_PROTOCOL