LXR linux/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 */
   8struct iu {
   9        __u8 iu_id;
  10        __u8 rsvd1;
  11        __be16 tag;
  12} __attribute__((__packed__));
  13
  14enum {
  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
  23enum {
  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
  35enum {
  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
  45struct 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
  57struct 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 */
  71struct 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
  82struct 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
  90struct usb_pipe_usage_descriptor {
  91        __u8  bLength;
  92        __u8  bDescriptorType;
  93
  94        __u8  bPipeID;
  95        __u8  Reserved;
  96} __attribute__((__packed__));
  97
  98enum {
  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
 110