Install the BlockIo protocol.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Anthony PERARD <anthony.per...@citrix.com>
---
Change in V2:
- Remove blockIo2 headers.
- Fix few comment.
- file header, copyright
- Rewrite few comment and error messages
- No more callback
- Improving block read/write, increase to the max size in one request
(instead of only 8pages)
- Fix lastblock when it's a cdrom
- Do uninitialisation when fail to install fail
- few comment
- Licenses
---
OvmfPkg/XenPvBlkDxe/BlockIo.c | 292 ++++++++++++++++++++++++++++++++++++
OvmfPkg/XenPvBlkDxe/BlockIo.h | 124 +++++++++++++++
OvmfPkg/XenPvBlkDxe/XenPvBlkDxe.c | 64 ++++++++
OvmfPkg/XenPvBlkDxe/XenPvBlkDxe.h | 1 +
OvmfPkg/XenPvBlkDxe/XenPvBlkDxe.inf | 2 +
5 files changed, 483 insertions(+)
create mode 100644 OvmfPkg/XenPvBlkDxe/BlockIo.c
create mode 100644 OvmfPkg/XenPvBlkDxe/BlockIo.h
diff --git a/OvmfPkg/XenPvBlkDxe/BlockIo.c b/OvmfPkg/XenPvBlkDxe/BlockIo.c
new file mode 100644
index 0000000..f08339b
--- /dev/null
+++ b/OvmfPkg/XenPvBlkDxe/BlockIo.c
@@ -0,0 +1,292 @@
+/** @file
+ BlockIo implementation for Xen PV Block driver.
+
+ This file is implementing the interface between the actual driver in
+ BlockFront.c to the BlockIo protocol.
+
+ Copyright (C) 2014, Citrix Ltd.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in
+ the documentation and/or other materials provided with the
+ distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ POSSIBILITY OF SUCH DAMAGE.
+
+**/
+
+#include "XenPvBlkDxe.h"
+
+#include "BlockFront.h"
+
+///
+/// Block I/O Media structure
+///
+GLOBAL_REMOVE_IF_UNREFERENCED
+EFI_BLOCK_IO_MEDIA gXenPvBlkDxeBlockIoMedia = {
+ 0, // MediaId
+ FALSE, // RemovableMedia
+ FALSE, // MediaPresent
+ FALSE, // LogicalPartition
+ TRUE, // ReadOnly
+ FALSE, // WriteCaching
+ 512, // BlockSize
+ 512, // IoAlign, BlockFront does not support less than 512 bits-aligned.
+ 0, // LastBlock
+ 0, // LowestAlignedLba
+ 0, // LogicalBlocksPerPhysicalBlock
+ 0 // OptimalTransferLengthGranularity
+};
+
+///
+/// Block I/O Protocol instance
+///
+GLOBAL_REMOVE_IF_UNREFERENCED
+EFI_BLOCK_IO_PROTOCOL gXenPvBlkDxeBlockIo = {
+ EFI_BLOCK_IO_PROTOCOL_REVISION3, // Revision
+ &gXenPvBlkDxeBlockIoMedia, // Media
+ XenPvBlkDxeBlockIoReset, // Reset
+ XenPvBlkDxeBlockIoReadBlocks, // ReadBlocks
+ XenPvBlkDxeBlockIoWriteBlocks, // WriteBlocks
+ XenPvBlkDxeBlockIoFlushBlocks // FlushBlocks
+};
+
+
+
+
+/**
+ Read/Write BufferSize bytes from Lba into Buffer.
+
+ This function is commun to XenPvBlkDxeBlockIoReadBlocks and
+ XenPvBlkDxeBlockIoWriteBlocks.
+
+ @param This Indicates a pointer to the calling context.
+ @param MediaId Id of the media, changes every time the media is replaced.
+ @param Lba The starting Logical Block Address to read from/write to.
+ @param BufferSize Size of Buffer, must be a multiple of device block size.
+ @param Buffer A pointer to the destination/source buffer for the data.
+ @param IsWrite Indicate if the operation is write or read.
+
+ @return See description of XenPvBlkDxeBlockIoReadBlocks and
+ XenPvBlkDxeBlockIoWriteBlocks.
+**/
+STATIC
+EFI_STATUS
+XenPvBlkDxeBlockIoReadWriteBlocks (
+ IN EFI_BLOCK_IO_PROTOCOL *This,
+ IN UINT32 MediaId,
+ IN EFI_LBA Lba,
+ IN UINTN BufferSize,
+ IN OUT VOID *Buffer,
+ IN BOOLEAN IsWrite
+ )
+{
+ XEN_BLOCK_FRONT_IO IoData;
+ EFI_BLOCK_IO_MEDIA *Media;
+ UINTN NextOffset;
+ EFI_STATUS Status;
+
+ if (Buffer == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+ if (BufferSize == 0) {
+ return EFI_SUCCESS;
+ }
+
+ Media = This->Media;
+
+ if (BufferSize % Media->BlockSize != 0) {
+ DEBUG ((EFI_D_ERROR, "XenPvBlkDxe: Bad buffer size: 0x%X\n", BufferSize));
+ return EFI_BAD_BUFFER_SIZE;
+ }
+
+ if (Lba > Media->LastBlock ||
+ (BufferSize / Media->BlockSize) - 1 > Media->LastBlock - Lba) {
+ DEBUG ((EFI_D_ERROR, "XenPvBlkDxe: %a with invalid LBA: 0x%LX, size:
0x%x\n",
+ IsWrite ? "Write" : "Read", Lba, BufferSize));
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (IsWrite && Media->ReadOnly) {
+ return EFI_WRITE_PROTECTED;
+ }
+
+ if ((Media->IoAlign > 1) && (UINTN)Buffer & (Media->IoAlign - 1)) {
+ //
+ // Grub2 does not appear to respect IoAlign of 512, so reallocate the
+ // buffer here.
+ //
+ VOID *NewBuffer;
+
+ //
+ // Try again with a properly aligned buffer.
+ //
+ NewBuffer = AllocateAlignedPages((BufferSize + EFI_PAGE_SIZE) /
EFI_PAGE_SIZE,
+ Media->IoAlign);
+ if (!IsWrite) {
+ Status = XenPvBlkDxeBlockIoReadBlocks (This, MediaId,
+ Lba, BufferSize, NewBuffer);
+ CopyMem (Buffer, NewBuffer, BufferSize);
+ } else {
+ CopyMem (NewBuffer, Buffer, BufferSize);
+ Status = XenPvBlkDxeBlockIoWriteBlocks (This, MediaId,
+ Lba, BufferSize, NewBuffer);
+ }
+ FreeAlignedPages (NewBuffer, (BufferSize + EFI_PAGE_SIZE) / EFI_PAGE_SIZE);
+ return Status;
+ }
+
+ IoData.Dev = XEN_BLOCK_FRONT_FROM_BLOCK_IO (This);
+ NextOffset = Lba * Media->BlockSize;
+
+ while (BufferSize > 0) {
+ if (((UINTN)Buffer & EFI_PAGE_MASK) == 0) {
+ IoData.Size = MIN (BLKIF_MAX_SEGMENTS_PER_REQUEST * EFI_PAGE_SIZE,
+ BufferSize);
+ } else {
+ IoData.Size = MIN ((BLKIF_MAX_SEGMENTS_PER_REQUEST - 1) * EFI_PAGE_SIZE,
+ BufferSize);
+ }
+
+ IoData.Buffer = Buffer;
+ IoData.Offset = NextOffset;
+ BufferSize -= IoData.Size;
+ Buffer = (VOID*) ((UINTN) Buffer + IoData.Size);
+ NextOffset += IoData.Size;
+ Status = XenPvBlockIo (&IoData, IsWrite);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((EFI_D_ERROR, "XenPvBlkDxe: Error durring %a operation.\n",
+ IsWrite ? "write" : "read"));
+ return Status;
+ }
+ }
+ return EFI_SUCCESS;
+}
+
+
+/**
+ Read BufferSize bytes from Lba into Buffer.
+
+ @param This Indicates a pointer to the calling context.
+ @param MediaId Id of the media, changes every time the media is replaced.
+ @param Lba The starting Logical Block Address to read from
+ @param BufferSize Size of Buffer, must be a multiple of device block size.
+ @param Buffer A pointer to the destination buffer for the data. The
caller is
+ responsible for either having implicit or explicit
ownership of the buffer.
+
+ @retval EFI_SUCCESS The data was read correctly from the device.
+ @retval EFI_DEVICE_ERROR The device reported an error while performing
the read.
+ @retval EFI_NO_MEDIA There is no media in the device.
+ @retval EFI_MEDIA_CHANGED The MediaId does not matched the current
device.
+ @retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block
size of the device.
+ @retval EFI_INVALID_PARAMETER The read request contains LBAs that are not
valid,
+ or the buffer is not on proper alignment.
+
+**/
+EFI_STATUS
+EFIAPI
+XenPvBlkDxeBlockIoReadBlocks (
+ IN EFI_BLOCK_IO_PROTOCOL *This,
+ IN UINT32 MediaId,
+ IN EFI_LBA Lba,
+ IN UINTN BufferSize,
+ OUT VOID *Buffer
+ )
+{
+ return XenPvBlkDxeBlockIoReadWriteBlocks (This,
+ MediaId, Lba, BufferSize, Buffer, FALSE);
+}
+
+/**
+ Write BufferSize bytes from Lba into Buffer.
+
+ @param This Indicates a pointer to the calling context.
+ @param MediaId The media ID that the write request is for.
+ @param Lba The starting logical block address to be written. The
caller is
+ responsible for writing to only legitimate locations.
+ @param BufferSize Size of Buffer, must be a multiple of device block size.
+ @param Buffer A pointer to the source buffer for the data.
+
+ @retval EFI_SUCCESS The data was written correctly to the device.
+ @retval EFI_WRITE_PROTECTED The device can not be written to.
+ @retval EFI_DEVICE_ERROR The device reported an error while performing
the write.
+ @retval EFI_NO_MEDIA There is no media in the device.
+ @retval EFI_MEDIA_CHNAGED The MediaId does not matched the current
device.
+ @retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block
size of the device.
+ @retval EFI_INVALID_PARAMETER The write request contains LBAs that are not
valid,
+ or the buffer is not on proper alignment.
+
+**/
+EFI_STATUS
+EFIAPI
+XenPvBlkDxeBlockIoWriteBlocks (
+ IN EFI_BLOCK_IO_PROTOCOL *This,
+ IN UINT32 MediaId,
+ IN EFI_LBA Lba,
+ IN UINTN BufferSize,
+ IN VOID *Buffer
+ )
+{
+ return XenPvBlkDxeBlockIoReadWriteBlocks (This,
+ MediaId, Lba, BufferSize, Buffer, TRUE);
+}
+
+/**
+ Flush the Block Device.
+
+ @param This Indicates a pointer to the calling context.
+
+ @retval EFI_SUCCESS All outstanding data was written to the device
+ @retval EFI_DEVICE_ERROR The device reported an error while writting back
the data
+ @retval EFI_NO_MEDIA There is no media in the device.
+
+**/
+EFI_STATUS
+EFIAPI
+XenPvBlkDxeBlockIoFlushBlocks (
+ IN EFI_BLOCK_IO_PROTOCOL *This
+ )
+{
+ XenPvBlockSync (XEN_BLOCK_FRONT_FROM_BLOCK_IO (This));
+ return EFI_SUCCESS;
+}
+
+/**
+ Reset the block device hardware.
+
+ @param[in] This Indicates a pointer to the calling context.
+ @param[in] ExtendedVerification Not used.
+
+ @retval EFI_SUCCESS The device was reset.
+
+**/
+EFI_STATUS
+EFIAPI
+XenPvBlkDxeBlockIoReset (
+ IN EFI_BLOCK_IO_PROTOCOL *This,
+ IN BOOLEAN ExtendedVerification
+ )
+{
+ //
+ // Since the initialization of the devices is done, then the device is
+ // working correctly.
+ //
+ return EFI_SUCCESS;
+}
diff --git a/OvmfPkg/XenPvBlkDxe/BlockIo.h b/OvmfPkg/XenPvBlkDxe/BlockIo.h
new file mode 100644
index 0000000..22b6de2
--- /dev/null
+++ b/OvmfPkg/XenPvBlkDxe/BlockIo.h
@@ -0,0 +1,124 @@
+/** @file
+ BlockIo function declaration for Xen PV block driver.
+
+ Copyright (C) 2014, Citrix Ltd.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in
+ the documentation and/or other materials provided with the
+ distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ POSSIBILITY OF SUCH DAMAGE.
+
+**/
+
+/**
+ Read BufferSize bytes from Lba into Buffer.
+
+ @param This Indicates a pointer to the calling context.
+ @param MediaId Id of the media, changes every time the media is replaced.
+ @param Lba The starting Logical Block Address to read from
+ @param BufferSize Size of Buffer, must be a multiple of device block size.
+ @param Buffer A pointer to the destination buffer for the data. The
caller is
+ responsible for either having implicit or explicit
ownership of the buffer.
+
+ @retval EFI_SUCCESS The data was read correctly from the device.
+ @retval EFI_DEVICE_ERROR The device reported an error while performing
the read.
+ @retval EFI_NO_MEDIA There is no media in the device.
+ @retval EFI_MEDIA_CHANGED The MediaId does not matched the current
device.
+ @retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block
size of the device.
+ @retval EFI_INVALID_PARAMETER The read request contains LBAs that are not
valid,
+ or the buffer is not on proper alignment.
+
+**/
+EFI_STATUS
+EFIAPI
+XenPvBlkDxeBlockIoReadBlocks (
+ IN EFI_BLOCK_IO_PROTOCOL *This,
+ IN UINT32 MediaId,
+ IN EFI_LBA Lba,
+ IN UINTN BufferSize,
+ OUT VOID *Buffer
+ );
+
+/**
+ Write BufferSize bytes from Lba into Buffer.
+
+ @param This Indicates a pointer to the calling context.
+ @param MediaId The media ID that the write request is for.
+ @param Lba The starting logical block address to be written. The
caller is
+ responsible for writing to only legitimate locations.
+ @param BufferSize Size of Buffer, must be a multiple of device block size.
+ @param Buffer A pointer to the source buffer for the data.
+
+ @retval EFI_SUCCESS The data was written correctly to the device.
+ @retval EFI_WRITE_PROTECTED The device can not be written to.
+ @retval EFI_DEVICE_ERROR The device reported an error while performing
the write.
+ @retval EFI_NO_MEDIA There is no media in the device.
+ @retval EFI_MEDIA_CHNAGED The MediaId does not matched the current
device.
+ @retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block
size of the device.
+ @retval EFI_INVALID_PARAMETER The write request contains LBAs that are not
valid,
+ or the buffer is not on proper alignment.
+
+**/
+EFI_STATUS
+EFIAPI
+XenPvBlkDxeBlockIoWriteBlocks (
+ IN EFI_BLOCK_IO_PROTOCOL *This,
+ IN UINT32 MediaId,
+ IN EFI_LBA Lba,
+ IN UINTN BufferSize,
+ IN VOID *Buffer
+ );
+
+/**
+ Flush the Block Device.
+
+ @param This Indicates a pointer to the calling context.
+
+ @retval EFI_SUCCESS All outstanding data was written to the device
+ @retval EFI_DEVICE_ERROR The device reported an error while writting back
the data
+ @retval EFI_NO_MEDIA There is no media in the device.
+
+**/
+EFI_STATUS
+EFIAPI
+XenPvBlkDxeBlockIoFlushBlocks (
+ IN EFI_BLOCK_IO_PROTOCOL *This
+ );
+
+/**
+ Reset the block device hardware.
+
+ @param[in] This Indicates a pointer to the calling context.
+ @param[in] ExtendedVerification Not used.
+
+ @retval EFI_SUCCESS The device was reset.
+
+**/
+EFI_STATUS
+EFIAPI
+XenPvBlkDxeBlockIoReset (
+ IN EFI_BLOCK_IO_PROTOCOL *This,
+ IN BOOLEAN ExtendedVerification
+ );
+
+extern EFI_BLOCK_IO_MEDIA gXenPvBlkDxeBlockIoMedia;
+extern EFI_BLOCK_IO_PROTOCOL gXenPvBlkDxeBlockIo;
diff --git a/OvmfPkg/XenPvBlkDxe/XenPvBlkDxe.c
b/OvmfPkg/XenPvBlkDxe/XenPvBlkDxe.c
index 930333f..d530600 100644
--- a/OvmfPkg/XenPvBlkDxe/XenPvBlkDxe.c
+++ b/OvmfPkg/XenPvBlkDxe/XenPvBlkDxe.c
@@ -281,6 +281,7 @@ XenPvBlkDxeDriverBindingStart (
EFI_STATUS Status;
XENBUS_PROTOCOL *XenBusIo;
XEN_BLOCK_FRONT_DEVICE *Dev;
+ EFI_BLOCK_IO_MEDIA *Media;
Status = gBS->OpenProtocol (
ControllerHandle,
@@ -299,8 +300,44 @@ XenPvBlkDxeDriverBindingStart (
goto CloseProtocol;
}
+ CopyMem (&Dev->BlockIo, &gXenPvBlkDxeBlockIo, sizeof
(EFI_BLOCK_IO_PROTOCOL));
+ Media = AllocateCopyPool (sizeof (EFI_BLOCK_IO_MEDIA),
+ &gXenPvBlkDxeBlockIoMedia);
+ if (Dev->MediaInfo.VDiskInfo & VDISK_REMOVABLE) {
+ Media->RemovableMedia = TRUE;
+ }
+ Media->MediaPresent = TRUE;
+ Media->ReadOnly = !Dev->MediaInfo.ReadWrite;
+ if (Dev->MediaInfo.CdRom) {
+ //
+ // If it's a cdrom, the blocksize value need to be 2048 for OVMF to
+ // recognize it as a cdrom:
+ // MdeModulePkg/Universal/Disk/PartitionDxe/ElTorito.c
+ //
+ Media->BlockSize = 2048;
+ Media->LastBlock = DivU64x32 (Dev->MediaInfo.Sectors,
+ Media->BlockSize /
Dev->MediaInfo.SectorSize) - 1;
+ } else {
+ Media->BlockSize = Dev->MediaInfo.SectorSize;
+ Media->LastBlock = Dev->MediaInfo.Sectors - 1;
+ }
+ Dev->BlockIo.Media = Media;
+
+ Status = gBS->InstallMultipleProtocolInterfaces (
+ &ControllerHandle,
+ &gEfiBlockIoProtocolGuid, &Dev->BlockIo,
+ NULL
+ );
+ if (EFI_ERROR (Status)) {
+ DEBUG ((EFI_D_ERROR, "XenPvBlk: install protocol fail: %r\n", Status));
+ goto UninitBlockFront;
+ }
+
return EFI_SUCCESS;
+UninitBlockFront:
+ FreePool (Media);
+ XenPvBlockFrontShutdown (Dev);
CloseProtocol:
gBS->CloseProtocol (ControllerHandle, &gXenBusProtocolGuid,
This->DriverBindingHandle, ControllerHandle);
@@ -342,6 +379,33 @@ XenPvBlkDxeDriverBindingStop (
IN EFI_HANDLE *ChildHandleBuffer OPTIONAL
)
{
+ EFI_BLOCK_IO_PROTOCOL *BlockIo;
+ XEN_BLOCK_FRONT_DEVICE *Dev;
+ EFI_BLOCK_IO_MEDIA *Media;
+ EFI_STATUS Status;
+
+ Status = gBS->OpenProtocol (
+ ControllerHandle, &gEfiBlockIoProtocolGuid,
+ (VOID **)&BlockIo,
+ This->DriverBindingHandle, ControllerHandle,
+ EFI_OPEN_PROTOCOL_GET_PROTOCOL
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ Status = gBS->UninstallProtocolInterface (ControllerHandle,
+ &gEfiBlockIoProtocolGuid, BlockIo);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ Media = BlockIo->Media;
+ Dev = XEN_BLOCK_FRONT_FROM_BLOCK_IO (BlockIo);
+ XenPvBlockFrontShutdown (Dev);
+
+ FreePool (Media);
+
gBS->CloseProtocol (ControllerHandle, &gXenBusProtocolGuid,
This->DriverBindingHandle, ControllerHandle);
diff --git a/OvmfPkg/XenPvBlkDxe/XenPvBlkDxe.h
b/OvmfPkg/XenPvBlkDxe/XenPvBlkDxe.h
index 14c65b2..420e751 100644
--- a/OvmfPkg/XenPvBlkDxe/XenPvBlkDxe.h
+++ b/OvmfPkg/XenPvBlkDxe/XenPvBlkDxe.h
@@ -93,6 +93,7 @@ extern EFI_COMPONENT_NAME_PROTOCOL gXenPvBlkDxeComponentName;
//
#include "DriverBinding.h"
#include "ComponentName.h"
+#include "BlockIo.h"
#endif
diff --git a/OvmfPkg/XenPvBlkDxe/XenPvBlkDxe.inf
b/OvmfPkg/XenPvBlkDxe/XenPvBlkDxe.inf
index 619ed8f..b7c4a1f 100644
--- a/OvmfPkg/XenPvBlkDxe/XenPvBlkDxe.inf
+++ b/OvmfPkg/XenPvBlkDxe/XenPvBlkDxe.inf
@@ -52,6 +52,8 @@
ComponentName.h
BlockFront.c
BlockFront.h
+ BlockIo.c
+ BlockIo.h
[LibraryClasses]
--
Anthony PERARD
------------------------------------------------------------------------------
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