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OvmfPkg/XenBusDxe: Open PciIo protocol.

Browse Source 
The PciIo interface will be used in "OvmfPkg/XenBusDxe: Add Grant Table
functions" to get the memory address of the BAR 1 and use the space to
map shared memory.

Change in V3:
- add a commit description.

Change in V2:
- Coding style
- Error handler

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16261 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Anthony PERARD 2014-10-29 06:49:22 +00:00 committed by jljusten
parent abcbbb14a4
commit 956622c4c9
2 changed files with 20 additions and 0 deletions
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19
OvmfPkg/XenBusDxe/XenBusDxe.c
View File

@ -281,11 +281,25 @@ XenBusDxeDriverBindingStart (
{ {
EFI_STATUS Status; EFI_STATUS Status;
XENBUS_DEVICE *Dev; XENBUS_DEVICE *Dev;
EFI_PCI_IO_PROTOCOL *PciIo;
Status = gBS->OpenProtocol (
ControllerHandle,
&gEfiPciIoProtocolGuid,
(VOID **) &PciIo,
This->DriverBindingHandle,
ControllerHandle,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if (EFI_ERROR (Status)) {
return Status;
}
Dev = AllocateZeroPool (sizeof (*Dev)); Dev = AllocateZeroPool (sizeof (*Dev));
Dev->Signature = XENBUS_DEVICE_SIGNATURE; Dev->Signature = XENBUS_DEVICE_SIGNATURE;
Dev->This = This; Dev->This = This;
Dev->ControllerHandle = ControllerHandle; Dev->ControllerHandle = ControllerHandle;
Dev->PciIo = PciIo;
EfiAcquireLock (&mMyDeviceLock); EfiAcquireLock (&mMyDeviceLock);
if (mMyDevice != NULL) { if (mMyDevice != NULL) {
@ -323,6 +337,8 @@ XenBusDxeDriverBindingStart (
ErrorAllocated: ErrorAllocated:
FreePool (Dev); FreePool (Dev);
gBS->CloseProtocol (ControllerHandle, &gEfiPciIoProtocolGuid,
This->DriverBindingHandle, ControllerHandle);
return Status; return Status;
} }
@ -365,6 +381,9 @@ XenBusDxeDriverBindingStop (
gBS->CloseEvent (Dev->ExitBootEvent); gBS->CloseEvent (Dev->ExitBootEvent);
gBS->CloseProtocol (ControllerHandle, &gEfiPciIoProtocolGuid,
This->DriverBindingHandle, ControllerHandle);
mMyDevice = NULL; mMyDevice = NULL;
FreePool (Dev); FreePool (Dev);
return EFI_SUCCESS; return EFI_SUCCESS;

1
OvmfPkg/XenBusDxe/XenBusDxe.h
View File

@ -84,6 +84,7 @@ struct _XENBUS_DEVICE {
UINT32 Signature; UINT32 Signature;
EFI_DRIVER_BINDING_PROTOCOL *This; EFI_DRIVER_BINDING_PROTOCOL *This;
EFI_HANDLE ControllerHandle; EFI_HANDLE ControllerHandle;
EFI_PCI_IO_PROTOCOL *PciIo;
EFI_EVENT ExitBootEvent; EFI_EVENT ExitBootEvent;
VOID *Hyperpage; VOID *Hyperpage;