diff options
Diffstat (limited to 'OvmfPkg/Include/IndustryStandard/VirtioBlk.h')
| -rw-r--r-- | OvmfPkg/Include/IndustryStandard/VirtioBlk.h | 73 |
1 files changed, 36 insertions, 37 deletions
diff --git a/OvmfPkg/Include/IndustryStandard/VirtioBlk.h b/OvmfPkg/Include/IndustryStandard/VirtioBlk.h index 23da619d77..7a904975c3 100644 --- a/OvmfPkg/Include/IndustryStandard/VirtioBlk.h +++ b/OvmfPkg/Include/IndustryStandard/VirtioBlk.h @@ -14,46 +14,45 @@ #include <IndustryStandard/Virtio.h>
-
//
// virtio-0.9.5, Appendix D: Block Device
//
#pragma pack(1)
typedef struct {
- UINT8 PhysicalBlockExp; // # of logical blocks per physical block (log2)
- UINT8 AlignmentOffset; // offset of first aligned logical block
- UINT16 MinIoSize; // suggested minimum I/O size in blocks
- UINT32 OptIoSize; // optimal (suggested maximum) I/O size in blocks
+ UINT8 PhysicalBlockExp; // # of logical blocks per physical block (log2)
+ UINT8 AlignmentOffset; // offset of first aligned logical block
+ UINT16 MinIoSize; // suggested minimum I/O size in blocks
+ UINT32 OptIoSize; // optimal (suggested maximum) I/O size in blocks
} VIRTIO_BLK_TOPOLOGY;
typedef struct {
- UINT64 Capacity;
- UINT32 SizeMax;
- UINT32 SegMax;
- UINT16 Cylinders;
- UINT8 Heads;
- UINT8 Sectors;
- UINT32 BlkSize;
- VIRTIO_BLK_TOPOLOGY Topology;
+ UINT64 Capacity;
+ UINT32 SizeMax;
+ UINT32 SegMax;
+ UINT16 Cylinders;
+ UINT8 Heads;
+ UINT8 Sectors;
+ UINT32 BlkSize;
+ VIRTIO_BLK_TOPOLOGY Topology;
} VIRTIO_BLK_CONFIG;
#pragma pack()
-#define OFFSET_OF_VBLK(Field) OFFSET_OF (VIRTIO_BLK_CONFIG, Field)
-#define SIZE_OF_VBLK(Field) (sizeof ((VIRTIO_BLK_CONFIG *) 0)->Field)
+#define OFFSET_OF_VBLK(Field) OFFSET_OF (VIRTIO_BLK_CONFIG, Field)
+#define SIZE_OF_VBLK(Field) (sizeof ((VIRTIO_BLK_CONFIG *) 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
+#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, via
// VIRTIO_BLK_F_TOPOLOGY
-#define VIRTIO_BLK_F_SCSI BIT7
-#define VIRTIO_BLK_F_FLUSH BIT9 // identical to "write cache enabled"
-#define VIRTIO_BLK_F_TOPOLOGY BIT10 // information on optimal I/O alignment
+#define VIRTIO_BLK_F_SCSI BIT7
+#define VIRTIO_BLK_F_FLUSH BIT9 // identical to "write cache enabled"
+#define VIRTIO_BLK_F_TOPOLOGY BIT10 // information on optimal I/O alignment
//
// We keep the status byte separate from the rest of the virtio-blk request
@@ -62,22 +61,22 @@ typedef struct { //
#pragma pack(1)
typedef struct {
- UINT32 Type;
- UINT32 IoPrio;
- UINT64 Sector;
+ 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_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
+#define VIRTIO_BLK_S_OK 0x00
+#define VIRTIO_BLK_S_IOERR 0x01
+#define VIRTIO_BLK_S_UNSUPP 0x02
#endif // _VIRTIO_BLK_H_
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