| /* |
| * 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 { |
| __u32 num_queues; |
| __u32 seg_max; |
| __u32 max_sectors; |
| __u32 cmd_per_lun; |
| __u32 event_info_size; |
| __u32 sense_size; |
| __u32 cdb_size; |
| __u16 max_channel; |
| __u16 max_target; |
| __u32 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 */ |
