/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __USB_UAS_H__
#define __USB_UAS_H__
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
/* Common header for all IUs */
struct iu {
__u8 iu_id;
__u8 rsvd1;
__be16 tag;
} __attribute__((__packed__));
enum {
IU_ID_COMMAND = 0 x01,
IU_ID_STATUS = 0 x03,
IU_ID_RESPONSE = 0 x04,
IU_ID_TASK_MGMT = 0 x05,
IU_ID_READ_READY = 0 x06,
IU_ID_WRITE_READY = 0 x07,
};
enum {
TMF_ABORT_TASK = 0 x01,
TMF_ABORT_TASK_SET = 0 x02,
TMF_CLEAR_TASK_SET = 0 x04,
TMF_LOGICAL_UNIT_RESET = 0 x08,
TMF_I_T_NEXUS_RESET = 0 x10,
TMF_CLEAR_ACA = 0 x40,
TMF_QUERY_TASK = 0 x80,
TMF_QUERY_TASK_SET = 0 x81,
TMF_QUERY_ASYNC_EVENT = 0 x82,
};
enum {
RC_TMF_COMPLETE = 0 x00,
RC_INVALID_INFO_UNIT = 0 x02,
RC_TMF_NOT_SUPPORTED = 0 x04,
RC_TMF_FAILED = 0 x05,
RC_TMF_SUCCEEDED = 0 x08,
RC_INCORRECT_LUN = 0 x09,
RC_OVERLAPPED_TAG = 0 x0a,
};
struct command_iu {
__u8 iu_id;
__u8 rsvd1;
__be16 tag;
__u8 prio_attr;
__u8 rsvd5;
__u8 len;
__u8 rsvd7;
struct scsi_lun lun;
__u8 cdb[16 ]; /* XXX: Overflow-checking tools may misunderstand */
} __attribute__((__packed__));
struct task_mgmt_iu {
__u8 iu_id;
__u8 rsvd1;
__be16 tag;
__u8 function;
__u8 rsvd2;
__be16 task_tag;
struct scsi_lun lun;
} __attribute__((__packed__));
/*
* Also used for the Read Ready and Write Ready IUs since they have the
* same first four bytes
*/
struct sense_iu {
__u8 iu_id;
__u8 rsvd1;
__be16 tag;
__be16 status_qual;
__u8 status;
__u8 rsvd7[7 ];
__be16 len;
__u8 sense[SCSI_SENSE_BUFFERSIZE];
} __attribute__((__packed__));
struct response_iu {
__u8 iu_id;
__u8 rsvd1;
__be16 tag;
__u8 add_response_info[3 ];
__u8 response_code;
} __attribute__((__packed__));
struct usb_pipe_usage_descriptor {
__u8 bLength;
__u8 bDescriptorType;
__u8 bPipeID;
__u8 Reserved;
} __attribute__((__packed__));
enum {
CMD_PIPE_ID = 1 ,
STATUS_PIPE_ID = 2 ,
DATA_IN_PIPE_ID = 3 ,
DATA_OUT_PIPE_ID = 4 ,
UAS_SIMPLE_TAG = 0 ,
UAS_HEAD_TAG = 1 ,
UAS_ORDERED_TAG = 2 ,
UAS_ACA = 4 ,
};
#endif
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