OvmfPkg: Include/IndustryStandard: extract VirtioBlk.h from Virtio.h

Separate virtio-blk related macro and type definitions from generic virtio
related ones. Adapt the virtio-blk driver since it needs the latter too.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13841 6f19259b-4bc3-4df7-8a09-765794883524

2 files changed, 82 insertions, 58 deletions

diff --git a/OvmfPkg/Include/IndustryStandard/Virtio.h b/OvmfPkg/Include/IndustryStandard/Virtio.h
index a330738999..05c658fa54 100644
--- a/OvmfPkg/Include/IndustryStandard/Virtio.h
+++ b/OvmfPkg/Include/IndustryStandard/Virtio.h
@@ -1,6 +1,7 @@
 /** @file

 

-  Type and macro definitions corresponding to the virtio-0.9.5 specification.

+  Generic type and macro definitions corresponding to the virtio-0.9.5

+  specification.

 

   Copyright (C) 2012, Red Hat, Inc.

 

@@ -108,25 +109,8 @@ typedef struct {
   UINT8  VhdrDeviceStatus;

   UINT8  VhdrISR;

 } VIRTIO_HDR;

-

-//

-// virtio-0.9.5, Appendix D: Block Device

-//

-typedef struct {

-  VIRTIO_HDR Generic;

-  UINT64     VhdrCapacity;

-  UINT32     VhdrSizeMax;

-  UINT32     VhdrSegMax;

-  UINT16     VhdrCylinders;

-  UINT8      VhdrHeads;

-  UINT8      VhdrSectors;

-  UINT32     VhdrBlkSize;

-} VBLK_HDR;

 #pragma pack()

 

-#define OFFSET_OF_VBLK(Field) OFFSET_OF (VBLK_HDR, Field)

-#define SIZE_OF_VBLK(Field)   (sizeof ((VBLK_HDR *) 0)->Field)

-

 

 //

 // virtio-0.9.5, 2.2.2.1 Device Status

@@ -143,45 +127,5 @@ typedef struct {
 #define VIRTIO_F_RING_INDIRECT_DESC BIT28

 #define VIRTIO_F_RING_EVENT_IDX     BIT29

 

-//

-// virtio-0.9.5, Appendix D: Block Device

-//

-#define VIRTIO_BLK_F_BARRIER  BIT0

-#define VIRTIO_BLK_F_SIZE_MAX BIT1

-#define VIRTIO_BLK_F_SEG_MAX  BIT2

-#define VIRTIO_BLK_F_GEOMETRY BIT4

-#define VIRTIO_BLK_F_RO       BIT5

-#define VIRTIO_BLK_F_BLK_SIZE BIT6 // treated as "logical block size" in

-                                   // practice; actual host side implementation

-                                   // negotiates "optimal" block size

-                                   // separately

-#define VIRTIO_BLK_F_SCSI     BIT7

-#define VIRTIO_BLK_F_FLUSH    BIT9 // identical to "write cache enabled"

-

-

-//

-// We keep the status byte separate from the rest of the virtio-blk request

-// header. See description of historical scattering at the end of Appendix D:

-// we're going to put the status byte in a separate VRING_DESC.

-//

-#pragma pack(1)

-typedef struct {

-  UINT32 Type;

-  UINT32 IoPrio;

-  UINT64 Sector;

-} VIRTIO_BLK_REQ;

-#pragma pack()

-

-#define VIRTIO_BLK_T_IN           0x00000000

-#define VIRTIO_BLK_T_OUT          0x00000001

-#define VIRTIO_BLK_T_SCSI_CMD     0x00000002

-#define VIRTIO_BLK_T_SCSI_CMD_OUT 0x00000003

-#define VIRTIO_BLK_T_FLUSH        0x00000004

-#define VIRTIO_BLK_T_FLUSH_OUT    0x00000005

-#define VIRTIO_BLK_T_BARRIER      BIT31

-

-#define VIRTIO_BLK_S_OK           0x00

-#define VIRTIO_BLK_S_IOERR        0x01

-#define VIRTIO_BLK_S_UNSUPP       0x02

 

 #endif // _VIRTIO_H_

diff --git a/OvmfPkg/Include/IndustryStandard/VirtioBlk.h b/OvmfPkg/Include/IndustryStandard/VirtioBlk.h
new file mode 100644
index 0000000000..b71f224b65
--- /dev/null
+++ b/OvmfPkg/Include/IndustryStandard/VirtioBlk.h
@@ -0,0 +1,80 @@
+/** @file

+

+  Virtio Block Device specific type and macro definitions corresponding to the

+  virtio-0.9.5 specification.

+

+  Copyright (C) 2012, Red Hat, Inc.

+

+  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

+  http://opensource.org/licenses/bsd-license.php

+

+  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT

+  WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

+

+**/

+

+#ifndef _VIRTIO_BLK_H_

+#define _VIRTIO_BLK_H_

+

+#include <IndustryStandard/Virtio.h>

+

+

+//

+// virtio-0.9.5, Appendix D: Block Device

+//

+#pragma pack(1)

+typedef struct {

+  VIRTIO_HDR Generic;

+  UINT64     VhdrCapacity;

+  UINT32     VhdrSizeMax;

+  UINT32     VhdrSegMax;

+  UINT16     VhdrCylinders;

+  UINT8      VhdrHeads;

+  UINT8      VhdrSectors;

+  UINT32     VhdrBlkSize;

+} VBLK_HDR;

+#pragma pack()

+

+#define OFFSET_OF_VBLK(Field) OFFSET_OF (VBLK_HDR, Field)

+#define SIZE_OF_VBLK(Field)   (sizeof ((VBLK_HDR *) 0)->Field)

+

+#define VIRTIO_BLK_F_BARRIER  BIT0

+#define VIRTIO_BLK_F_SIZE_MAX BIT1

+#define VIRTIO_BLK_F_SEG_MAX  BIT2

+#define VIRTIO_BLK_F_GEOMETRY BIT4

+#define VIRTIO_BLK_F_RO       BIT5

+#define VIRTIO_BLK_F_BLK_SIZE BIT6 // treated as "logical block size" in

+                                   // practice; actual host side implementation

+                                   // negotiates "optimal" block size

+                                   // separately

+#define VIRTIO_BLK_F_SCSI     BIT7

+#define VIRTIO_BLK_F_FLUSH    BIT9 // identical to "write cache enabled"

+

+//

+// We keep the status byte separate from the rest of the virtio-blk request

+// header. See description of historical scattering at the end of Appendix D:

+// we're going to put the status byte in a separate VRING_DESC.

+//

+#pragma pack(1)

+typedef struct {

+  UINT32 Type;

+  UINT32 IoPrio;

+  UINT64 Sector;

+} VIRTIO_BLK_REQ;

+#pragma pack()

+

+#define VIRTIO_BLK_T_IN           0x00000000

+#define VIRTIO_BLK_T_OUT          0x00000001

+#define VIRTIO_BLK_T_SCSI_CMD     0x00000002

+#define VIRTIO_BLK_T_SCSI_CMD_OUT 0x00000003

+#define VIRTIO_BLK_T_FLUSH        0x00000004

+#define VIRTIO_BLK_T_FLUSH_OUT    0x00000005

+#define VIRTIO_BLK_T_BARRIER      BIT31

+

+#define VIRTIO_BLK_S_OK           0x00

+#define VIRTIO_BLK_S_IOERR        0x01

+#define VIRTIO_BLK_S_UNSUPP       0x02

+

+#endif // _VIRTIO_BLK_H_