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7e05484f02
This is analogous to commit a1b383870a made by Rusty Russell to all
the VirtIO headers at the time. This eases the use of the header as
is by other OSes.
Signed-off-by: Bryan Venteicher <bryanv@daemoninthecloset.org>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
150 lines
4.8 KiB
C
150 lines
4.8 KiB
C
/*
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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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#ifndef _LINUX_VIRTIO_SCSI_H
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#define _LINUX_VIRTIO_SCSI_H
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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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u8 lun[8]; /* Logical Unit Number */
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u64 tag; /* Command identifier */
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u8 task_attr; /* Task attribute */
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u8 prio;
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u8 crn;
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u8 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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u32 sense_len; /* Sense data length */
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u32 resid; /* Residual bytes in data buffer */
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u16 status_qualifier; /* Status qualifier */
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u8 status; /* Command completion status */
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u8 response; /* Response values */
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u8 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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u32 type;
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u32 subtype;
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u8 lun[8];
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u64 tag;
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} __packed;
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struct virtio_scsi_ctrl_tmf_resp {
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u8 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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u32 type;
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u8 lun[8];
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u32 event_requested;
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} __packed;
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struct virtio_scsi_ctrl_an_resp {
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u32 event_actual;
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u8 response;
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} __packed;
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struct virtio_scsi_event {
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u32 event;
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u8 lun[8];
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u32 reason;
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} __packed;
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struct virtio_scsi_config {
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u32 num_queues;
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u32 seg_max;
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u32 max_sectors;
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u32 cmd_per_lun;
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u32 event_info_size;
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u32 sense_size;
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u32 cdb_size;
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u16 max_channel;
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u16 max_target;
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u32 max_lun;
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} __packed;
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/* Feature Bits */
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#define VIRTIO_SCSI_F_INOUT 0
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#define VIRTIO_SCSI_F_HOTPLUG 1
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#define VIRTIO_SCSI_F_CHANGE 2
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/* Response codes */
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#define VIRTIO_SCSI_S_OK 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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#define VIRTIO_SCSI_T_PARAM_CHANGE 3
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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 /* _LINUX_VIRTIO_SCSI_H */
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