include/linux/usb/uas.h

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