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OvmfPkg/PvScsiDxe: Open PciIo protocol for later use 

This will give us an exclusive access to the PciIo of this device
after it was started and until it will be stopped.

Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=2567
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Liran Alon <liran.alon@oracle.com>
Message-Id: <20200328200100.60786-9-liran.alon@oracle.com>
Reviewed-by: Nikita Leshenko <nikita.leshchenko@oracle.com>
This commit is contained in:
Liran Alon 2020-03-28 23:00:51 +03:00 committed by mergify[bot]
parent 9c2d8281af
commit c08eaaaf37
2 changed files with 29 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
OvmfPkg/PvScsiDxe/PvScsi.c
View File

@ -412,11 +412,23 @@ PvScsiDriverBindingStart (
return EFI_OUT_OF_RESOURCES;
}
Status = PvScsiInit (Dev);
Status = gBS->OpenProtocol (
ControllerHandle,
&gEfiPciIoProtocolGuid,
(VOID **)&Dev->PciIo,
This->DriverBindingHandle,
ControllerHandle,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if (EFI_ERROR (Status)) {
goto FreePvScsi;
}
Status = PvScsiInit (Dev);
if (EFI_ERROR (Status)) {
goto ClosePciIo;
}
//
// Setup complete, attempt to export the driver instance's PassThru interface
//
@ -436,6 +448,14 @@ PvScsiDriverBindingStart (
UninitDev:
PvScsiUninit (Dev);
ClosePciIo:
gBS->CloseProtocol (
ControllerHandle,
&gEfiPciIoProtocolGuid,
This->DriverBindingHandle,
ControllerHandle
);
FreePvScsi:
FreePool (Dev);
@ -481,6 +501,13 @@ PvScsiDriverBindingStop (
PvScsiUninit (Dev);
gBS->CloseProtocol (
ControllerHandle,
&gEfiPciIoProtocolGuid,
This->DriverBindingHandle,
ControllerHandle
);
FreePool (Dev);
return EFI_SUCCESS;

1
OvmfPkg/PvScsiDxe/PvScsi.h
View File

@ -19,6 +19,7 @@
typedef struct {
UINT32 Signature;
EFI_PCI_IO_PROTOCOL *PciIo;
UINT8 MaxTarget;
UINT8 MaxLun;
EFI_EXT_SCSI_PASS_THRU_PROTOCOL PassThru;