1 /* $OpenBSD: vioscsireg.h,v 1.2 2019/03/24 18:21:12 sf 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 (1ULL<<0) 32 #define VIRTIO_SCSI_F_HOTPLUG (1ULL<<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