LXR linux/include/linux/usb/storage.h

   1#ifndef __LINUX_USB_STORAGE_H
   2#define __LINUX_USB_STORAGE_H
   3
   4/*
   5 * linux/usb/storage.h
   6 *
   7 * Copyright Matthew Wilcox for Intel Corp, 2010
   8 *
   9 * This file contains definitions taken from the
  10 * USB Mass Storage Class Specification Overview
  11 *
  12 * Distributed under the terms of the GNU GPL, version two.
  13 */
  14
  15/* Storage subclass codes */
  16
  17#define USB_SC_RBC      0x01            /* Typically, flash devices */
  18#define USB_SC_8020     0x02            /* CD-ROM */
  19#define USB_SC_QIC      0x03            /* QIC-157 Tapes */
  20#define USB_SC_UFI      0x04            /* Floppy */
  21#define USB_SC_8070     0x05            /* Removable media */
  22#define USB_SC_SCSI     0x06            /* Transparent */
  23#define USB_SC_LOCKABLE 0x07            /* Password-protected */
  24
  25#define USB_SC_ISD200   0xf0            /* ISD200 ATA */
  26#define USB_SC_CYP_ATACB        0xf1    /* Cypress ATACB */
  27#define USB_SC_DEVICE   0xff            /* Use device's value */
  28
  29/* Storage protocol codes */
  30
  31#define USB_PR_CBI      0x00            /* Control/Bulk/Interrupt */
  32#define USB_PR_CB       0x01            /* Control/Bulk w/o interrupt */
  33#define USB_PR_BULK     0x50            /* bulk only */
  34#define USB_PR_UAS      0x62            /* USB Attached SCSI */
  35
  36#define USB_PR_USBAT    0x80            /* SCM-ATAPI bridge */
  37#define USB_PR_EUSB_SDDR09      0x81    /* SCM-SCSI bridge for SDDR-09 */
  38#define USB_PR_SDDR55   0x82            /* SDDR-55 (made up) */
  39#define USB_PR_DPCM_USB 0xf0            /* Combination CB/SDDR09 */
  40#define USB_PR_FREECOM  0xf1            /* Freecom */
  41#define USB_PR_DATAFAB  0xf2            /* Datafab chipsets */
  42#define USB_PR_JUMPSHOT 0xf3            /* Lexar Jumpshot */
  43#define USB_PR_ALAUDA   0xf4            /* Alauda chipsets */
  44#define USB_PR_KARMA    0xf5            /* Rio Karma */
  45
  46#define USB_PR_DEVICE   0xff            /* Use device's value */
  47
  48/*
  49 * Bulk only data structures
  50 */
  51
  52/* command block wrapper */
  53struct bulk_cb_wrap {
  54        __le32  Signature;              /* contains 'USBC' */
  55        __u32   Tag;                    /* unique per command id */
  56        __le32  DataTransferLength;     /* size of data */
  57        __u8    Flags;                  /* direction in bit 0 */
  58        __u8    Lun;                    /* LUN normally 0 */
  59        __u8    Length;                 /* length of the CDB */
  60        __u8    CDB[16];                /* max command */
  61};
  62
  63#define US_BULK_CB_WRAP_LEN     31
  64#define US_BULK_CB_SIGN         0x43425355      /* spells out 'USBC' */
  65#define US_BULK_FLAG_IN         (1 << 7)
  66#define US_BULK_FLAG_OUT        0
  67
  68/* command status wrapper */
  69struct bulk_cs_wrap {
  70        __le32  Signature;      /* contains 'USBS' */
  71        __u32   Tag;            /* same as original command */
  72        __le32  Residue;        /* amount not transferred */
  73        __u8    Status;         /* see below */
  74};
  75
  76#define US_BULK_CS_WRAP_LEN     13
  77#define US_BULK_CS_SIGN         0x53425355      /* spells out 'USBS' */
  78#define US_BULK_STAT_OK         0
  79#define US_BULK_STAT_FAIL       1
  80#define US_BULK_STAT_PHASE      2
  81
  82/* bulk-only class specific requests */
  83#define US_BULK_RESET_REQUEST   0xff
  84#define US_BULK_GET_MAX_LUN     0xfe
  85
  86#endif
  87