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/* $OpenBSD: vioscsireg.h,v 1.1 2013/12/20 21:50:49 matthew Exp $ */
/*
* Copyright (c) 2013 Google Inc.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* Configuration registers */
#define VIRTIO_SCSI_CONFIG_NUM_QUEUES 0 /* 32bit */
#define VIRTIO_SCSI_CONFIG_SEG_MAX 4 /* 32bit */
#define VIRTIO_SCSI_CONFIG_MAX_SECTORS 8 /* 32bit */
#define VIRTIO_SCSI_CONFIG_CMD_PER_LUN 12 /* 32bit */
#define VIRTIO_SCSI_CONFIG_EVENT_INFO_SIZE 16 /* 32bit */
#define VIRTIO_SCSI_CONFIG_SENSE_SIZE 20 /* 32bit */
#define VIRTIO_SCSI_CONFIG_CDB_SIZE 24 /* 32bit */
#define VIRTIO_SCSI_CONFIG_MAX_CHANNEL 28 /* 16bit */
#define VIRTIO_SCSI_CONFIG_MAX_TARGET 30 /* 16bit */
#define VIRTIO_SCSI_CONFIG_MAX_LUN 32 /* 32bit */
/* Feature bits */
#define VIRTIO_SCSI_F_INOUT (1<<0)
#define VIRTIO_SCSI_F_HOTPLUG (1<<1)
/* Response status values */
#define VIRTIO_SCSI_S_OK 0
#define VIRTIO_SCSI_S_OVERRUN 1
#define VIRTIO_SCSI_S_ABORTED 2
#define VIRTIO_SCSI_S_BAD_TARGET 3
#define VIRTIO_SCSI_S_RESET 4
#define VIRTIO_SCSI_S_BUSY 5
#define VIRTIO_SCSI_S_TRANSPORT_FAILURE 6
#define VIRTIO_SCSI_S_TARGET_FAILURE 7
#define VIRTIO_SCSI_S_NEXUS_FAILURE 8
#define VIRTIO_SCSI_S_FAILURE 9
/* Task attributes */
#define VIRTIO_SCSI_S_SIMPLE 0
#define VIRTIO_SCSI_S_ORDERED 1
#define VIRTIO_SCSI_S_HEAD 2
#define VIRTIO_SCSI_S_ACA 3
/* Request header structure */
struct virtio_scsi_req_hdr {
uint8_t lun[8];
uint64_t id;
uint8_t task_attr;
uint8_t prio;
uint8_t crn;
uint8_t cdb[32];
} __packed;
/* Followed by data-out. */
/* Response header structure */
struct virtio_scsi_res_hdr {
uint32_t sense_len;
uint32_t residual;
uint16_t status_qualifier;
uint8_t status;
uint8_t response;
uint8_t sense[96];
} __packed;
/* Followed by data-in. */
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