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/*
* Copyright (c) 2006-2023, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2023-02-25 GuEe-GUI the first version
*/
#ifndef __VIRTIO_SCSI_H__
#define __VIRTIO_SCSI_H__
#include <drivers/core/dm.h>
#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 */
rt_packed(struct virtio_scsi_cmd_req
{
rt_uint8_t lun[8]; /* Logical Unit Number */
rt_le64_t tag; /* Command identifier */
rt_uint8_t task_attr; /* Task attribute */
rt_uint8_t prio; /* SAM command priority field */
rt_uint8_t crn;
rt_uint8_t cdb[VIRTIO_SCSI_CDB_SIZE];
});
/* SCSI command request, followed by protection information */
rt_packed(struct virtio_scsi_cmd_req_pi
{
rt_uint8_t lun[8]; /* Logical Unit Number */
rt_le64_t tag; /* Command identifier */
rt_uint8_t task_attr; /* Task attribute */
rt_uint8_t prio; /* SAM command priority field */
rt_uint8_t crn;
rt_le32_t pi_bytesout; /* DataOUT PI Number of bytes */
rt_le32_t pi_bytesin; /* DataIN PI Number of bytes */
rt_uint8_t cdb[VIRTIO_SCSI_CDB_SIZE];
});
/* Response, followed by sense data and data-in */
rt_packed(struct virtio_scsi_cmd_resp
{
rt_le32_t sense_len; /* Sense data length */
rt_le32_t resid; /* Residual bytes in data buffer */
rt_le16_t status_qualifier; /* Status qualifier */
rt_uint8_t status; /* Command completion status */
rt_uint8_t response; /* Response values */
rt_uint8_t sense[VIRTIO_SCSI_SENSE_SIZE];
});
/* Task Management Request */
rt_packed(struct virtio_scsi_ctrl_tmf_req
{
rt_le32_t type;
rt_le32_t subtype;
rt_uint8_t lun[8];
rt_le64_t tag;
});
rt_packed(struct virtio_scsi_ctrl_tmf_resp
{
rt_uint8_t response;
});
/* Asynchronous notification query/subscription */
rt_packed(struct virtio_scsi_ctrl_an_req
{
rt_le32_t type;
rt_uint8_t lun[8];
rt_le32_t event_requested;
});
rt_packed(struct virtio_scsi_ctrl_an_resp
{
rt_le32_t event_actual;
rt_uint8_t response;
});
rt_packed(struct virtio_scsi_event
{
rt_le32_t event;
rt_uint8_t lun[8];
rt_le32_t reason;
});
rt_packed(struct virtio_scsi_config
{
rt_le32_t num_queues;
rt_le32_t seg_max;
rt_le32_t max_sectors;
rt_le32_t cmd_per_lun;
rt_le32_t event_info_size;
rt_le32_t sense_size;
rt_le32_t cdb_size;
rt_le16_t max_channel;
rt_le16_t max_target;
rt_le32_t max_lun;
});
/* 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 /* __VIRTIO_SCSI_H__ */
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