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