| 1 | /* $OpenBSD: vioscsireg.h,v 1.1 2013/12/20 21:50:49 matthew Exp $ */ |
| 2 | /* |
| 3 | * Copyright (c) 2013 Google Inc. |
| 4 | * |
| 5 | * Permission to use, copy, modify, and distribute this software for any |
| 6 | * purpose with or without fee is hereby granted, provided that the above |
| 7 | * copyright notice and this permission notice appear in all copies. |
| 8 | * |
| 9 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 10 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 11 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 12 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 13 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 14 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 15 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 16 | */ |
| 17 | |
| 18 | /* Configuration registers */ |
| 19 | #define VIRTIO_SCSI_CONFIG_NUM_QUEUES 0 /* 32bit */ |
| 20 | #define VIRTIO_SCSI_CONFIG_SEG_MAX 4 /* 32bit */ |
| 21 | #define VIRTIO_SCSI_CONFIG_MAX_SECTORS 8 /* 32bit */ |
| 22 | #define VIRTIO_SCSI_CONFIG_CMD_PER_LUN 12 /* 32bit */ |
| 23 | #define VIRTIO_SCSI_CONFIG_EVENT_INFO_SIZE 16 /* 32bit */ |
| 24 | #define VIRTIO_SCSI_CONFIG_SENSE_SIZE 20 /* 32bit */ |
| 25 | #define VIRTIO_SCSI_CONFIG_CDB_SIZE 24 /* 32bit */ |
| 26 | #define VIRTIO_SCSI_CONFIG_MAX_CHANNEL 28 /* 16bit */ |
| 27 | #define VIRTIO_SCSI_CONFIG_MAX_TARGET 30 /* 16bit */ |
| 28 | #define VIRTIO_SCSI_CONFIG_MAX_LUN 32 /* 32bit */ |
| 29 | |
| 30 | /* Feature bits */ |
| 31 | #define VIRTIO_SCSI_F_INOUT (1<<0) |
| 32 | #define VIRTIO_SCSI_F_HOTPLUG (1<<1) |
| 33 | |
| 34 | /* Response status values */ |
| 35 | #define VIRTIO_SCSI_S_OK 0 |
| 36 | #define VIRTIO_SCSI_S_OVERRUN 1 |
| 37 | #define VIRTIO_SCSI_S_ABORTED 2 |
| 38 | #define VIRTIO_SCSI_S_BAD_TARGET 3 |
| 39 | #define VIRTIO_SCSI_S_RESET 4 |
| 40 | #define VIRTIO_SCSI_S_BUSY 5 |
| 41 | #define VIRTIO_SCSI_S_TRANSPORT_FAILURE 6 |
| 42 | #define VIRTIO_SCSI_S_TARGET_FAILURE 7 |
| 43 | #define VIRTIO_SCSI_S_NEXUS_FAILURE 8 |
| 44 | #define VIRTIO_SCSI_S_FAILURE 9 |
| 45 | |
| 46 | /* Task attributes */ |
| 47 | #define VIRTIO_SCSI_S_SIMPLE 0 |
| 48 | #define VIRTIO_SCSI_S_ORDERED 1 |
| 49 | #define VIRTIO_SCSI_S_HEAD 2 |
| 50 | #define VIRTIO_SCSI_S_ACA 3 |
| 51 | |
| 52 | /* Request header structure */ |
| 53 | struct virtio_scsi_req_hdr { |
| 54 | uint8_t lun[8]; |
| 55 | uint64_t id; |
| 56 | uint8_t task_attr; |
| 57 | uint8_t prio; |
| 58 | uint8_t crn; |
| 59 | uint8_t cdb[32]; |
| 60 | } __packed; |
| 61 | /* Followed by data-out. */ |
| 62 | |
| 63 | /* Response header structure */ |
| 64 | struct virtio_scsi_res_hdr { |
| 65 | uint32_t sense_len; |
| 66 | uint32_t residual; |
| 67 | uint16_t status_qualifier; |
| 68 | uint8_t status; |
| 69 | uint8_t response; |
| 70 | uint8_t sense[96]; |
| 71 | } __packed; |
| 72 | /* Followed by data-in. */ |
| 73 | |