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OvmfPkg/MptScsiDxe: 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 is will be stopped.

Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=2390
Signed-off-by: Nikita Leshenko <nikita.leshchenko@oracle.com>
Reviewed-by: Liran Alon <liran.alon@oracle.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20200504210607.144434-9-nikita.leshchenko@oracle.com>
This commit is contained in:
Nikita Leshenko 2020-05-05 00:06:03 +03:00 committed by mergify[bot]
parent f9941d31dd
commit da8c0b8f4d
1 changed files with 29 additions and 1 deletions
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30
OvmfPkg/MptScsiDxe/MptScsi.c
View File

@ -37,6 +37,7 @@ typedef struct {
EFI_EXT_SCSI_PASS_THRU_PROTOCOL PassThru;
EFI_EXT_SCSI_PASS_THRU_MODE PassThruMode;
UINT8 MaxTarget;
EFI_PCI_IO_PROTOCOL *PciIo;
} MPT_SCSI_DEV;
#define MPT_SCSI_FROM_PASS_THRU(PassThruPtr) \
@ -322,6 +323,18 @@ MptScsiControllerStart (
Dev->MaxTarget = PcdGet8 (PcdMptScsiMaxTargetLimit);
Status = gBS->OpenProtocol (
ControllerHandle,
&gEfiPciIoProtocolGuid,
(VOID **)&Dev->PciIo,
This->DriverBindingHandle,
ControllerHandle,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if (EFI_ERROR (Status)) {
goto FreePool;
}
//
// Host adapter channel, doesn't exist
//
@ -346,11 +359,19 @@ MptScsiControllerStart (
&Dev->PassThru
);
if (EFI_ERROR (Status)) {
goto FreePool;
goto CloseProtocol;
}
return EFI_SUCCESS;
CloseProtocol:
gBS->CloseProtocol (
ControllerHandle,
&gEfiPciIoProtocolGuid,
This->DriverBindingHandle,
ControllerHandle
);
FreePool:
FreePool (Dev);
@ -394,6 +415,13 @@ MptScsiControllerStop (
return Status;
}
gBS->CloseProtocol (
ControllerHandle,
&gEfiPciIoProtocolGuid,
This->DriverBindingHandle,
ControllerHandle
);
FreePool (Dev);
return Status;