Change BlockIo drivers to return EFI_NO_MEDIA or EFI_MEDIA_CHANGED even the Buffer/BufferSize/Lba is invalid so that caller can probe the media status easier.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11584 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Bus/Ata/AtaBusDxe/AtaBus.c

@@ -842,6 +842,11 @@ BlockIoReadWrite (
   //
   // Check parameters.
   //
+  Media = This->Media;
+  if (MediaId != Media->MediaId) {
+    return EFI_MEDIA_CHANGED;
+  }
+
   if (Buffer == NULL) {
     return EFI_INVALID_PARAMETER;
   }
@@ -850,11 +855,6 @@ BlockIoReadWrite (
     return EFI_SUCCESS;
   }
 
-  Media = This->Media;
-  if (MediaId != Media->MediaId) {
-    return EFI_MEDIA_CHANGED;
-  }
-
   BlockSize = Media->BlockSize;
   if ((BufferSize % BlockSize) != 0) {
     return EFI_BAD_BUFFER_SIZE;

MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDisk.c

@@ -1,7 +1,7 @@
 /** @file
   SCSI disk driver that layers on every SCSI IO protocol in the system.
 
-Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
 This program and the accompanying materials
 are licensed and made available under the terms and conditions of the BSD License
 which accompanies this distribution.  The full text of the license may be found at
@@ -454,17 +454,8 @@ ScsiDiskReadBlocks (
   BOOLEAN             MediaChange;
   EFI_TPL             OldTpl;
 
-  MediaChange = FALSE;
+  MediaChange    = FALSE;
-  if (Buffer == NULL) {
+  OldTpl         = gBS->RaiseTPL (TPL_CALLBACK);
-    return EFI_INVALID_PARAMETER;
-  }
-
-  if (BufferSize == 0) {
-    return EFI_SUCCESS;
-  }
-
-  OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
-
   ScsiDiskDevice = SCSI_DISK_DEV_FROM_THIS (This);
 
   if (!IS_DEVICE_FIXED(ScsiDiskDevice)) {
@@ -502,6 +493,16 @@ ScsiDiskReadBlocks (
     goto Done;
   }
 
+  if (Buffer == NULL) {
+    Status = EFI_INVALID_PARAMETER;
+    goto Done;
+  }
+
+  if (BufferSize == 0) {
+    Status = EFI_SUCCESS;
+    goto Done;
+  }
+
   if (BufferSize % BlockSize != 0) {
     Status = EFI_BAD_BUFFER_SIZE;
     goto Done;
@@ -569,17 +570,8 @@ ScsiDiskWriteBlocks (
   BOOLEAN             MediaChange;
   EFI_TPL             OldTpl;
 
-  MediaChange = FALSE;
+  MediaChange    = FALSE;
-  if (Buffer == NULL) {
+  OldTpl         = gBS->RaiseTPL (TPL_CALLBACK);
-    return EFI_INVALID_PARAMETER;
-  }
-
-  if (BufferSize == 0) {
-    return EFI_SUCCESS;
-  }
-
-  OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
-
   ScsiDiskDevice = SCSI_DISK_DEV_FROM_THIS (This);
 
   if (!IS_DEVICE_FIXED(ScsiDiskDevice)) {
@@ -617,6 +609,16 @@ ScsiDiskWriteBlocks (
     goto Done;
   }
 
+  if (BufferSize == 0) {
+    Status = EFI_SUCCESS;
+    goto Done;
+  }
+
+  if (Buffer == NULL) {
+    Status = EFI_INVALID_PARAMETER;
+    goto Done;
+  }
+
   if (BufferSize % BlockSize != 0) {
     Status = EFI_BAD_BUFFER_SIZE;
     goto Done;

MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassImpl.c

@@ -1,7 +1,7 @@
 /** @file
   USB Mass Storage Driver that manages USB Mass Storage Device and produces Block I/O Protocol.
 
-Copyright (c) 2007 - 2008, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2007 - 2011, Intel Corporation. All rights reserved.<BR>
 This program and the accompanying materials
 are licensed and made available under the terms and conditions of the BSD License
 which accompanies this distribution.  The full text of the license may be found at
@@ -113,13 +113,6 @@ UsbMassReadBlocks (
   EFI_TPL             OldTpl;
   UINTN               TotalBlock;
 
-  //
-  // First, validate the parameters
-  //
-  if ((Buffer == NULL) || (BufferSize == 0)) {
-    return EFI_INVALID_PARAMETER;
-  }
-
   //
   // Raise TPL to TPL_NOTIFY to serialize all its operations
   // to protect shared data structures.
@@ -140,6 +133,26 @@ UsbMassReadBlocks (
     }
   }
 
+  if (!(Media->MediaPresent)) {
+    Status = EFI_NO_MEDIA;
+    goto ON_EXIT;
+  }
+
+  if (MediaId != Media->MediaId) {
+    Status = EFI_MEDIA_CHANGED;
+    goto ON_EXIT;
+  }
+
+  if (BufferSize == 0) {
+    Status = EFI_SUCCESS;
+    goto ON_EXIT;
+  }
+
+  if (Buffer == NULL) {
+    Status = EFI_INVALID_PARAMETER;
+    goto ON_EXIT;
+  }
+
   //
   // BufferSize must be a multiple of the intrinsic block size of the device.
   //
@@ -158,16 +171,6 @@ UsbMassReadBlocks (
     goto ON_EXIT;
   }
 
-  if (!(Media->MediaPresent)) {
-    Status = EFI_NO_MEDIA;
-    goto ON_EXIT;
-  }
-
-  if (MediaId != Media->MediaId) {
-    Status = EFI_MEDIA_CHANGED;
-    goto ON_EXIT;
-  }
-
   Status = UsbBootReadBlocks (UsbMass, (UINT32) Lba, TotalBlock, Buffer);
   if (EFI_ERROR (Status)) {
     DEBUG ((EFI_D_ERROR, "UsbMassReadBlocks: UsbBootReadBlocks (%r) -> Reset\n", Status));
@@ -221,13 +224,6 @@ UsbMassWriteBlocks (
   EFI_TPL             OldTpl;
   UINTN               TotalBlock;
 
-  //
-  // First, validate the parameters
-  //
-  if ((Buffer == NULL) || (BufferSize == 0)) {
-    return EFI_INVALID_PARAMETER;
-  }
-
   //
   // Raise TPL to TPL_NOTIFY to serialize all its operations
   // to protect shared data structures.
@@ -248,6 +244,26 @@ UsbMassWriteBlocks (
     }
   }
 
+  if (!(Media->MediaPresent)) {
+    Status = EFI_NO_MEDIA;
+    goto ON_EXIT;
+  }
+
+  if (MediaId != Media->MediaId) {
+    Status = EFI_MEDIA_CHANGED;
+    goto ON_EXIT;
+  }
+
+  if (BufferSize == 0) {
+    Status = EFI_SUCCESS;
+    goto ON_EXIT;
+  }
+
+  if (Buffer == NULL) {
+    Status = EFI_INVALID_PARAMETER;
+    goto ON_EXIT;
+  }
+
   //
   // BufferSize must be a multiple of the intrinsic block size of the device.
   //
@@ -266,16 +282,6 @@ UsbMassWriteBlocks (
     goto ON_EXIT;
   }
 
-  if (!(Media->MediaPresent)) {
-    Status = EFI_NO_MEDIA;
-    goto ON_EXIT;
-  }
-
-  if (MediaId != Media->MediaId) {
-    Status = EFI_MEDIA_CHANGED;
-    goto ON_EXIT;
-  }
-
   //
   // Try to write the data even the device is marked as ReadOnly,
   // and clear the status should the write succeed.

MdeModulePkg/Universal/Disk/PartitionDxe/Partition.c

@@ -465,6 +465,37 @@ PartitionReset (
                                   );
 }
 
+/**
+  Probe the media status and return EFI_NO_MEDIA or EFI_MEDIA_CHANGED
+  for no media or media change case. Otherwise DefaultStatus is returned.
+
+  @param DiskIo             Pointer to the DiskIo instance.
+  @param MediaId            Id of the media, changes every time the media is replaced.
+  @param DefaultStatus      The default status to return when it's not the no media
+                            or media change case.
+
+  @retval EFI_NO_MEDIA      There is no media.
+  @retval EFI_MEDIA_CHANGED The media was changed.
+  @retval others            The default status to return.
+**/
+EFI_STATUS
+ProbeMediaStatus (
+  IN EFI_DISK_IO_PROTOCOL    *DiskIo,
+  IN UINT32                  MediaId,
+  IN EFI_STATUS              DefaultStatus
+  )
+{
+  EFI_STATUS                 Status;
+
+  //
+  // Read 1 byte from offset 0 but passing NULL as buffer pointer
+  //
+  Status = DiskIo->ReadDisk (DiskIo, MediaId, 0, 1, NULL);
+  if ((Status == EFI_NO_MEDIA) || (Status == EFI_MEDIA_CHANGED)) {
+    return Status;
+  }
+  return DefaultStatus;
+}
 
 /**
   Read by using the Disk IO protocol on the parent device. Lba addresses
@@ -501,12 +532,12 @@ PartitionReadBlocks (
   Private = PARTITION_DEVICE_FROM_BLOCK_IO_THIS (This);
 
   if (BufferSize % Private->BlockSize != 0) {
-    return EFI_BAD_BUFFER_SIZE;
+    return ProbeMediaStatus (Private->DiskIo, MediaId, EFI_BAD_BUFFER_SIZE);
   }
 
   Offset = MultU64x32 (Lba, Private->BlockSize) + Private->Start;
   if (Offset + BufferSize > Private->End) {
-    return EFI_INVALID_PARAMETER;
+    return ProbeMediaStatus (Private->DiskIo, MediaId, EFI_INVALID_PARAMETER);
   }
   //
   // Because some kinds of partition have different block size from their parent
@@ -552,12 +583,12 @@ PartitionWriteBlocks (
   Private = PARTITION_DEVICE_FROM_BLOCK_IO_THIS (This);
 
   if (BufferSize % Private->BlockSize != 0) {
-    return EFI_BAD_BUFFER_SIZE;
+    return ProbeMediaStatus (Private->DiskIo, MediaId, EFI_BAD_BUFFER_SIZE);
   }
 
   Offset = MultU64x32 (Lba, Private->BlockSize) + Private->Start;
   if (Offset + BufferSize > Private->End) {
-    return EFI_INVALID_PARAMETER;
+    return ProbeMediaStatus (Private->DiskIo, MediaId, EFI_INVALID_PARAMETER);
   }
   //
   // Because some kinds of partition have different block size from their parent