718cf2ccb9
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
155 lines
5.1 KiB
C
155 lines
5.1 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* This header is BSD licensed so anyone can use the definitions to implement
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* compatible drivers/servers.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _VIRTIO_SCSI_H
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#define _VIRTIO_SCSI_H
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/* Feature bits */
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#define VIRTIO_SCSI_F_INOUT 0x0001 /* Single request can contain both
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* read and write buffers */
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#define VIRTIO_SCSI_F_HOTPLUG 0x0002 /* Host should enable hot plug/unplug
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* of new LUNs and targets.
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*/
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#define VIRTIO_SCSI_CDB_SIZE 32
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#define VIRTIO_SCSI_SENSE_SIZE 96
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/* SCSI command request, followed by data-out */
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struct virtio_scsi_cmd_req {
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uint8_t lun[8]; /* Logical Unit Number */
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uint64_t tag; /* Command identifier */
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uint8_t task_attr; /* Task attribute */
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uint8_t prio;
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uint8_t crn;
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uint8_t cdb[VIRTIO_SCSI_CDB_SIZE];
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} __packed;
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/* Response, followed by sense data and data-in */
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struct virtio_scsi_cmd_resp {
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uint32_t sense_len; /* Sense data length */
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uint32_t resid; /* Residual bytes in data buffer */
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uint16_t status_qualifier; /* Status qualifier */
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uint8_t status; /* Command completion status */
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uint8_t response; /* Response values */
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uint8_t sense[VIRTIO_SCSI_SENSE_SIZE];
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} __packed;
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/* Task Management Request */
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struct virtio_scsi_ctrl_tmf_req {
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uint32_t type;
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uint32_t subtype;
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uint8_t lun[8];
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uint64_t tag;
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} __packed;
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struct virtio_scsi_ctrl_tmf_resp {
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uint8_t response;
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} __packed;
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/* Asynchronous notification query/subscription */
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struct virtio_scsi_ctrl_an_req {
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uint32_t type;
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uint8_t lun[8];
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uint32_t event_requested;
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} __packed;
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struct virtio_scsi_ctrl_an_resp {
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uint32_t event_actual;
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uint8_t response;
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} __packed;
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struct virtio_scsi_event {
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uint32_t event;
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uint8_t lun[8];
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uint32_t reason;
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} __packed;
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struct virtio_scsi_config {
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uint32_t num_queues;
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uint32_t seg_max;
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uint32_t max_sectors;
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uint32_t cmd_per_lun;
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uint32_t event_info_size;
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uint32_t sense_size;
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uint32_t cdb_size;
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uint16_t max_channel;
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uint16_t max_target;
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uint32_t max_lun;
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} __packed;
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/* Response codes */
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#define VIRTIO_SCSI_S_OK 0
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#define VIRTIO_SCSI_S_FUNCTION_COMPLETE 0
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#define VIRTIO_SCSI_S_OVERRUN 1
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#define VIRTIO_SCSI_S_ABORTED 2
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#define VIRTIO_SCSI_S_BAD_TARGET 3
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#define VIRTIO_SCSI_S_RESET 4
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#define VIRTIO_SCSI_S_BUSY 5
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#define VIRTIO_SCSI_S_TRANSPORT_FAILURE 6
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#define VIRTIO_SCSI_S_TARGET_FAILURE 7
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#define VIRTIO_SCSI_S_NEXUS_FAILURE 8
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#define VIRTIO_SCSI_S_FAILURE 9
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#define VIRTIO_SCSI_S_FUNCTION_SUCCEEDED 10
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#define VIRTIO_SCSI_S_FUNCTION_REJECTED 11
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#define VIRTIO_SCSI_S_INCORRECT_LUN 12
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/* Controlq type codes. */
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#define VIRTIO_SCSI_T_TMF 0
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#define VIRTIO_SCSI_T_AN_QUERY 1
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#define VIRTIO_SCSI_T_AN_SUBSCRIBE 2
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/* Valid TMF subtypes. */
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#define VIRTIO_SCSI_T_TMF_ABORT_TASK 0
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#define VIRTIO_SCSI_T_TMF_ABORT_TASK_SET 1
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#define VIRTIO_SCSI_T_TMF_CLEAR_ACA 2
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#define VIRTIO_SCSI_T_TMF_CLEAR_TASK_SET 3
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#define VIRTIO_SCSI_T_TMF_I_T_NEXUS_RESET 4
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#define VIRTIO_SCSI_T_TMF_LOGICAL_UNIT_RESET 5
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#define VIRTIO_SCSI_T_TMF_QUERY_TASK 6
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#define VIRTIO_SCSI_T_TMF_QUERY_TASK_SET 7
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/* Events. */
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#define VIRTIO_SCSI_T_EVENTS_MISSED 0x80000000
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#define VIRTIO_SCSI_T_NO_EVENT 0
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#define VIRTIO_SCSI_T_TRANSPORT_RESET 1
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#define VIRTIO_SCSI_T_ASYNC_NOTIFY 2
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/* Reasons of transport reset event */
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#define VIRTIO_SCSI_EVT_RESET_HARD 0
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#define VIRTIO_SCSI_EVT_RESET_RESCAN 1
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#define VIRTIO_SCSI_EVT_RESET_REMOVED 2
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#define VIRTIO_SCSI_S_SIMPLE 0
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#define VIRTIO_SCSI_S_ORDERED 1
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#define VIRTIO_SCSI_S_HEAD 2
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#define VIRTIO_SCSI_S_ACA 3
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#endif /* _VIRTIO_SCSI_H */
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