Revision: 19465
http://sourceforge.net/p/edk2/code/19465
Author: hwu1225
Date: 2015-12-23 01:34:36 +0000 (Wed, 23 Dec 2015)
Log Message:
-----------
MdeModulePkg ScsiDiskDxe: Modify FlushBlocksEx() to follow UEFI spec
The function ScsiDiskFlushBlocksEx() in ScsiDiskDxe/ScsiDisk.c originally
always returns EFI_SUCCESS, which is not aligned with the UEFI spec.
This commit adds addtional checks to see if the media in the device is
changed or removed. Check for whether the device can be written is also
added. Corresponding status will be returned according to the check
result.
(Sync patch r19444 from main trunk.)
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Hao Wu <[email protected]>
Reviewed-by: Feng Tian <[email protected]>
Revision Links:
--------------
http://sourceforge.net/p/edk2/code/19444
Modified Paths:
--------------
branches/UDK2015/MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDisk.c
branches/UDK2015/MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDisk.h
Modified: branches/UDK2015/MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDisk.c
===================================================================
--- branches/UDK2015/MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDisk.c
2015-12-23 01:34:09 UTC (rev 19464)
+++ branches/UDK2015/MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDisk.c
2015-12-23 01:34:36 UTC (rev 19465)
@@ -1116,10 +1116,12 @@
@param This Indicates a pointer to the calling context.
@param Token A pointer to the token associated with the transaction.
- @retval EFI_SUCCESS All outstanding data was written to the device.
- @retval EFI_DEVICE_ERROR The device reported an error while writing back the
- data.
- @retval EFI_NO_MEDIA There is no media in the device.
+ @retval EFI_SUCCESS All outstanding data was written to the device.
+ @retval EFI_DEVICE_ERROR The device reported an error while attempting to
+ write data.
+ @retval EFI_WRITE_PROTECTED The device cannot be written to.
+ @retval EFI_NO_MEDIA There is no media in the device.
+ @retval EFI_MEDIA_CHANGED The MediaId is not for the current media.
**/
EFI_STATUS
@@ -1129,15 +1131,72 @@
IN OUT EFI_BLOCK_IO2_TOKEN *Token
)
{
+ SCSI_DISK_DEV *ScsiDiskDevice;
+ EFI_BLOCK_IO_MEDIA *Media;
+ EFI_STATUS Status;
+ BOOLEAN MediaChange;
+ EFI_TPL OldTpl;
+
+ MediaChange = FALSE;
+ OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
+ ScsiDiskDevice = SCSI_DISK_DEV_FROM_BLKIO2 (This);
+
+ if (!IS_DEVICE_FIXED(ScsiDiskDevice)) {
+
+ Status = ScsiDiskDetectMedia (ScsiDiskDevice, FALSE, &MediaChange);
+ if (EFI_ERROR (Status)) {
+ Status = EFI_DEVICE_ERROR;
+ goto Done;
+ }
+
+ if (MediaChange) {
+ gBS->ReinstallProtocolInterface (
+ ScsiDiskDevice->Handle,
+ &gEfiBlockIoProtocolGuid,
+ &ScsiDiskDevice->BlkIo,
+ &ScsiDiskDevice->BlkIo
+ );
+ gBS->ReinstallProtocolInterface (
+ ScsiDiskDevice->Handle,
+ &gEfiBlockIo2ProtocolGuid,
+ &ScsiDiskDevice->BlkIo2,
+ &ScsiDiskDevice->BlkIo2
+ );
+ Status = EFI_MEDIA_CHANGED;
+ goto Done;
+ }
+ }
+
+ Media = ScsiDiskDevice->BlkIo2.Media;
+
+ if (!(Media->MediaPresent)) {
+ Status = EFI_NO_MEDIA;
+ goto Done;
+ }
+
+ if (Media->ReadOnly) {
+ Status = EFI_WRITE_PROTECTED;
+ goto Done;
+ }
+
//
- // Signal event and return directly.
+ // Wait for the BlockIo2 requests queue to become empty
//
+ while (!IsListEmpty (&ScsiDiskDevice->BlkIo2Queue));
+
+ Status = EFI_SUCCESS;
+
+ //
+ // Signal caller event
+ //
if ((Token != NULL) && (Token->Event != NULL)) {
Token->TransactionStatus = EFI_SUCCESS;
gBS->SignalEvent (Token->Event);
}
- return EFI_SUCCESS;
+Done:
+ gBS->RestoreTPL (OldTpl);
+ return Status;
}
Modified: branches/UDK2015/MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDisk.h
===================================================================
--- branches/UDK2015/MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDisk.h
2015-12-23 01:34:09 UTC (rev 19464)
+++ branches/UDK2015/MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDisk.h
2015-12-23 01:34:36 UTC (rev 19465)
@@ -555,10 +555,12 @@
@param This Indicates a pointer to the calling context.
@param Token A pointer to the token associated with the transaction.
- @retval EFI_SUCCESS All outstanding data was written to the device.
- @retval EFI_DEVICE_ERROR The device reported an error while writing back the
- data.
- @retval EFI_NO_MEDIA There is no media in the device.
+ @retval EFI_SUCCESS All outstanding data was written to the device.
+ @retval EFI_DEVICE_ERROR The device reported an error while attempting to
+ write data.
+ @retval EFI_WRITE_PROTECTED The device cannot be written to.
+ @retval EFI_NO_MEDIA There is no media in the device.
+ @retval EFI_MEDIA_CHANGED The MediaId is not for the current media.
**/
EFI_STATUS
------------------------------------------------------------------------------
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