1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef __USB_UAS_H__ |
3 | #define __USB_UAS_H__ |
4 | |
5 | #include <scsi/scsi.h> |
6 | #include <scsi/scsi_cmnd.h> |
7 | |
8 | /* Common header for all IUs */ |
9 | struct iu { |
10 | __u8 iu_id; |
11 | __u8 rsvd1; |
12 | __be16 tag; |
13 | } __attribute__((__packed__)); |
14 | |
15 | enum { |
16 | IU_ID_COMMAND = 0x01, |
17 | IU_ID_STATUS = 0x03, |
18 | IU_ID_RESPONSE = 0x04, |
19 | IU_ID_TASK_MGMT = 0x05, |
20 | IU_ID_READ_READY = 0x06, |
21 | IU_ID_WRITE_READY = 0x07, |
22 | }; |
23 | |
24 | enum { |
25 | TMF_ABORT_TASK = 0x01, |
26 | TMF_ABORT_TASK_SET = 0x02, |
27 | TMF_CLEAR_TASK_SET = 0x04, |
28 | TMF_LOGICAL_UNIT_RESET = 0x08, |
29 | TMF_I_T_NEXUS_RESET = 0x10, |
30 | TMF_CLEAR_ACA = 0x40, |
31 | TMF_QUERY_TASK = 0x80, |
32 | TMF_QUERY_TASK_SET = 0x81, |
33 | TMF_QUERY_ASYNC_EVENT = 0x82, |
34 | }; |
35 | |
36 | enum { |
37 | RC_TMF_COMPLETE = 0x00, |
38 | RC_INVALID_INFO_UNIT = 0x02, |
39 | RC_TMF_NOT_SUPPORTED = 0x04, |
40 | RC_TMF_FAILED = 0x05, |
41 | RC_TMF_SUCCEEDED = 0x08, |
42 | RC_INCORRECT_LUN = 0x09, |
43 | RC_OVERLAPPED_TAG = 0x0a, |
44 | }; |
45 | |
46 | struct command_iu { |
47 | __u8 iu_id; |
48 | __u8 rsvd1; |
49 | __be16 tag; |
50 | __u8 prio_attr; |
51 | __u8 rsvd5; |
52 | __u8 len; |
53 | __u8 rsvd7; |
54 | struct scsi_lun lun; |
55 | __u8 cdb[16]; /* XXX: Overflow-checking tools may misunderstand */ |
56 | } __attribute__((__packed__)); |
57 | |
58 | struct task_mgmt_iu { |
59 | __u8 iu_id; |
60 | __u8 rsvd1; |
61 | __be16 tag; |
62 | __u8 function; |
63 | __u8 rsvd2; |
64 | __be16 task_tag; |
65 | struct scsi_lun lun; |
66 | } __attribute__((__packed__)); |
67 | |
68 | /* |
69 | * Also used for the Read Ready and Write Ready IUs since they have the |
70 | * same first four bytes |
71 | */ |
72 | struct sense_iu { |
73 | __u8 iu_id; |
74 | __u8 rsvd1; |
75 | __be16 tag; |
76 | __be16 status_qual; |
77 | __u8 status; |
78 | __u8 rsvd7[7]; |
79 | __be16 len; |
80 | __u8 sense[SCSI_SENSE_BUFFERSIZE]; |
81 | } __attribute__((__packed__)); |
82 | |
83 | struct response_iu { |
84 | __u8 iu_id; |
85 | __u8 rsvd1; |
86 | __be16 tag; |
87 | __u8 add_response_info[3]; |
88 | __u8 response_code; |
89 | } __attribute__((__packed__)); |
90 | |
91 | struct usb_pipe_usage_descriptor { |
92 | __u8 bLength; |
93 | __u8 bDescriptorType; |
94 | |
95 | __u8 bPipeID; |
96 | __u8 Reserved; |
97 | } __attribute__((__packed__)); |
98 | |
99 | enum { |
100 | CMD_PIPE_ID = 1, |
101 | STATUS_PIPE_ID = 2, |
102 | DATA_IN_PIPE_ID = 3, |
103 | DATA_OUT_PIPE_ID = 4, |
104 | |
105 | UAS_SIMPLE_TAG = 0, |
106 | UAS_HEAD_TAG = 1, |
107 | UAS_ORDERED_TAG = 2, |
108 | UAS_ACA = 4, |
109 | }; |
110 | #endif |
111 | |