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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173/* * This header is BSD licensed so anyone can use the definitions to implement * compatible drivers/servers. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */
#ifndef _LINUX_VIRTIO_SCSI_H#define _LINUX_VIRTIO_SCSI_H
#include <linux/virtio_types.h>
/* Default values of the CDB and sense data size configuration fields */#define VIRTIO_SCSI_CDB_DEFAULT_SIZE 32#define VIRTIO_SCSI_SENSE_DEFAULT_SIZE 96
#ifndef VIRTIO_SCSI_CDB_SIZE#define VIRTIO_SCSI_CDB_SIZE VIRTIO_SCSI_CDB_DEFAULT_SIZE#endif#ifndef VIRTIO_SCSI_SENSE_SIZE#define VIRTIO_SCSI_SENSE_SIZE VIRTIO_SCSI_SENSE_DEFAULT_SIZE#endif
/* SCSI command request, followed by data-out */struct virtio_scsi_cmd_req { __u8 lun[8]; /* Logical Unit Number */ __virtio64 tag; /* Command identifier */ __u8 task_attr; /* Task attribute */ __u8 prio; /* SAM command priority field */ __u8 crn; __u8 cdb[VIRTIO_SCSI_CDB_SIZE];} __attribute__((packed));
/* SCSI command request, followed by protection information */struct virtio_scsi_cmd_req_pi { __u8 lun[8]; /* Logical Unit Number */ __virtio64 tag; /* Command identifier */ __u8 task_attr; /* Task attribute */ __u8 prio; /* SAM command priority field */ __u8 crn; __virtio32 pi_bytesout; /* DataOUT PI Number of bytes */ __virtio32 pi_bytesin; /* DataIN PI Number of bytes */ __u8 cdb[VIRTIO_SCSI_CDB_SIZE];} __attribute__((packed));
/* Response, followed by sense data and data-in */struct virtio_scsi_cmd_resp { __virtio32 sense_len; /* Sense data length */ __virtio32 resid; /* Residual bytes in data buffer */ __virtio16 status_qualifier; /* Status qualifier */ __u8 status; /* Command completion status */ __u8 response; /* Response values */ __u8 sense[VIRTIO_SCSI_SENSE_SIZE];} __attribute__((packed));
/* Task Management Request */struct virtio_scsi_ctrl_tmf_req { __virtio32 type; __virtio32 subtype; __u8 lun[8]; __virtio64 tag;} __attribute__((packed));
struct virtio_scsi_ctrl_tmf_resp { __u8 response;} __attribute__((packed));
/* Asynchronous notification query/subscription */struct virtio_scsi_ctrl_an_req { __virtio32 type; __u8 lun[8]; __virtio32 event_requested;} __attribute__((packed));
struct virtio_scsi_ctrl_an_resp { __virtio32 event_actual; __u8 response;} __attribute__((packed));
struct virtio_scsi_event { __virtio32 event; __u8 lun[8]; __virtio32 reason;} __attribute__((packed));
struct virtio_scsi_config { __virtio32 num_queues; __virtio32 seg_max; __virtio32 max_sectors; __virtio32 cmd_per_lun; __virtio32 event_info_size; __virtio32 sense_size; __virtio32 cdb_size; __virtio16 max_channel; __virtio16 max_target; __virtio32 max_lun;} __attribute__((packed));
/* Feature Bits */#define VIRTIO_SCSI_F_INOUT 0#define VIRTIO_SCSI_F_HOTPLUG 1#define VIRTIO_SCSI_F_CHANGE 2#define VIRTIO_SCSI_F_T10_PI 3
/* Response codes */#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#define VIRTIO_SCSI_S_FUNCTION_SUCCEEDED 10#define VIRTIO_SCSI_S_FUNCTION_REJECTED 11#define VIRTIO_SCSI_S_INCORRECT_LUN 12
/* Controlq type codes. */#define VIRTIO_SCSI_T_TMF 0#define VIRTIO_SCSI_T_AN_QUERY 1#define VIRTIO_SCSI_T_AN_SUBSCRIBE 2
/* Valid TMF subtypes. */#define VIRTIO_SCSI_T_TMF_ABORT_TASK 0#define VIRTIO_SCSI_T_TMF_ABORT_TASK_SET 1#define VIRTIO_SCSI_T_TMF_CLEAR_ACA 2#define VIRTIO_SCSI_T_TMF_CLEAR_TASK_SET 3#define VIRTIO_SCSI_T_TMF_I_T_NEXUS_RESET 4#define VIRTIO_SCSI_T_TMF_LOGICAL_UNIT_RESET 5#define VIRTIO_SCSI_T_TMF_QUERY_TASK 6#define VIRTIO_SCSI_T_TMF_QUERY_TASK_SET 7
/* Events. */#define VIRTIO_SCSI_T_EVENTS_MISSED 0x80000000#define VIRTIO_SCSI_T_NO_EVENT 0#define VIRTIO_SCSI_T_TRANSPORT_RESET 1#define VIRTIO_SCSI_T_ASYNC_NOTIFY 2#define VIRTIO_SCSI_T_PARAM_CHANGE 3
/* Reasons of transport reset event */#define VIRTIO_SCSI_EVT_RESET_HARD 0#define VIRTIO_SCSI_EVT_RESET_RESCAN 1#define VIRTIO_SCSI_EVT_RESET_REMOVED 2
#define VIRTIO_SCSI_S_SIMPLE 0#define VIRTIO_SCSI_S_ORDERED 1#define VIRTIO_SCSI_S_HEAD 2#define VIRTIO_SCSI_S_ACA 3
#endif /* _LINUX_VIRTIO_SCSI_H */