projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 6b28fe9e | 1 | /** @file\r |
| 2 | \r | |
| 3 | Virtio Block Device specific type and macro definitions corresponding to the\r | |
| 4 | virtio-0.9.5 specification.\r | |
| 5 | \r | |
| 6 | Copyright (C) 2012, Red Hat, Inc.\r | |
| 7 | \r | |
| 8 | This program and the accompanying materials are licensed and made available\r | |
| 9 | under the terms and conditions of the BSD License which accompanies this\r | |
| 10 | distribution. The full text of the license may be found at\r | |
| 11 | http://opensource.org/licenses/bsd-license.php\r | |
| 12 | \r | |
| 13 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT\r | |
| 14 | WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
| 15 | \r | |
| 16 | **/\r | |
| 17 | \r | |
| 18 | #ifndef _VIRTIO_BLK_H_\r | |
| 19 | #define _VIRTIO_BLK_H_\r | |
| 20 | \r | |
| 21 | #include <IndustryStandard/Virtio.h>\r | |
| 22 | \r | |
| 23 | \r | |
| 24 | //\r | |
| 25 | // virtio-0.9.5, Appendix D: Block Device\r | |
| 26 | //\r | |
| 27 | #pragma pack(1)\r | |
| 5cf69d48 LE |
28 | typedef struct {\r |
| 29 | UINT8 PhysicalBlockExp; // # of logical blocks per physical block (log2)\r | |
| 30 | UINT8 AlignmentOffset; // offset of first aligned logical block\r | |
| 31 | UINT16 MinIoSize; // suggested minimum I/O size in blocks\r | |
| 32 | UINT32 OptIoSize; // optimal (suggested maximum) I/O size in blocks\r | |
| 33 | } VIRTIO_BLK_TOPOLOGY;\r | |
| 34 | \r | |
| 6b28fe9e | 35 | typedef struct {\r |
| 1d17076b LE |
36 | UINT64 Capacity;\r |
| 37 | UINT32 SizeMax;\r | |
| 38 | UINT32 SegMax;\r | |
| 39 | UINT16 Cylinders;\r | |
| 40 | UINT8 Heads;\r | |
| 41 | UINT8 Sectors;\r | |
| 42 | UINT32 BlkSize;\r | |
| 5cf69d48 | 43 | VIRTIO_BLK_TOPOLOGY Topology;\r |
| 56f65ed8 | 44 | } VIRTIO_BLK_CONFIG;\r |
| 6b28fe9e | 45 | #pragma pack()\r |
| 46 | \r | |
| 56f65ed8 OM |
47 | #define OFFSET_OF_VBLK(Field) OFFSET_OF (VIRTIO_BLK_CONFIG, Field)\r |
| 48 | #define SIZE_OF_VBLK(Field) (sizeof ((VIRTIO_BLK_CONFIG *) 0)->Field)\r | |
| 6b28fe9e | 49 | \r |
| 50 | #define VIRTIO_BLK_F_BARRIER BIT0\r | |
| 51 | #define VIRTIO_BLK_F_SIZE_MAX BIT1\r | |
| 52 | #define VIRTIO_BLK_F_SEG_MAX BIT2\r | |
| 53 | #define VIRTIO_BLK_F_GEOMETRY BIT4\r | |
| 54 | #define VIRTIO_BLK_F_RO BIT5\r | |
| 1d17076b LE |
55 | #define VIRTIO_BLK_F_BLK_SIZE BIT6 // treated as "logical block size" in\r |
| 56 | // practice; actual host side\r | |
| 57 | // implementation negotiates "optimal"\r | |
| 5cf69d48 LE |
58 | // block size separately, via\r |
| 59 | // VIRTIO_BLK_F_TOPOLOGY\r | |
| 6b28fe9e | 60 | #define VIRTIO_BLK_F_SCSI BIT7\r |
| 1d17076b | 61 | #define VIRTIO_BLK_F_FLUSH BIT9 // identical to "write cache enabled"\r |
| 5cf69d48 | 62 | #define VIRTIO_BLK_F_TOPOLOGY BIT10 // information on optimal I/O alignment\r |
| 6b28fe9e | 63 | \r |
| 64 | //\r | |
| 65 | // We keep the status byte separate from the rest of the virtio-blk request\r | |
| 66 | // header. See description of historical scattering at the end of Appendix D:\r | |
| 67 | // we're going to put the status byte in a separate VRING_DESC.\r | |
| 68 | //\r | |
| 69 | #pragma pack(1)\r | |
| 70 | typedef struct {\r | |
| 71 | UINT32 Type;\r | |
| 72 | UINT32 IoPrio;\r | |
| 73 | UINT64 Sector;\r | |
| 74 | } VIRTIO_BLK_REQ;\r | |
| 75 | #pragma pack()\r | |
| 76 | \r | |
| 77 | #define VIRTIO_BLK_T_IN 0x00000000\r | |
| 78 | #define VIRTIO_BLK_T_OUT 0x00000001\r | |
| 79 | #define VIRTIO_BLK_T_SCSI_CMD 0x00000002\r | |
| 80 | #define VIRTIO_BLK_T_SCSI_CMD_OUT 0x00000003\r | |
| 81 | #define VIRTIO_BLK_T_FLUSH 0x00000004\r | |
| 82 | #define VIRTIO_BLK_T_FLUSH_OUT 0x00000005\r | |
| 83 | #define VIRTIO_BLK_T_BARRIER BIT31\r | |
| 84 | \r | |
| 85 | #define VIRTIO_BLK_S_OK 0x00\r | |
| 86 | #define VIRTIO_BLK_S_IOERR 0x01\r | |
| 87 | #define VIRTIO_BLK_S_UNSUPP 0x02\r | |
| 88 | \r | |
| 89 | #endif // _VIRTIO_BLK_H_\r |