include/linux/usb/storage.h

   1 // SPDX-License-Identifier: GPL-2.0
   2 #ifndef __LINUX_USB_STORAGE_H
   3 #define __LINUX_USB_STORAGE_H
   4
   5 /*
   6  * linux/usb/storage.h
   7  *
   8  * Copyright Matthew Wilcox for Intel Corp, 2010
   9  *
  10  * This file contains definitions taken from the
  11  * USB Mass Storage Class Specification Overview
  12  *
  13  * Distributed under the terms of the GNU GPL, version two.
  14  */
  15
  16 /* Storage subclass codes */
  17
  18 #define USB_SC_RBC      0x01            /* Typically, flash devices */
  19 #define USB_SC_8020     0x02            /* CD-ROM */
  20 #define USB_SC_QIC      0x03            /* QIC-157 Tapes */
  21 #define USB_SC_UFI      0x04            /* Floppy */
  22 #define USB_SC_8070     0x05            /* Removable media */
  23 #define USB_SC_SCSI     0x06            /* Transparent */
  24 #define USB_SC_LOCKABLE 0x07            /* Password-protected */
  25
  26 #define USB_SC_ISD200   0xf0            /* ISD200 ATA */
  27 #define USB_SC_CYP_ATACB        0xf1    /* Cypress ATACB */
  28 #define USB_SC_DEVICE   0xff            /* Use device's value */
  29
  30 /* Storage protocol codes */
  31
  32 #define USB_PR_CBI      0x00            /* Control/Bulk/Interrupt */
  33 #define USB_PR_CB       0x01            /* Control/Bulk w/o interrupt */
  34 #define USB_PR_BULK     0x50            /* bulk only */
  35 #define USB_PR_UAS      0x62            /* USB Attached SCSI */
  36
  37 #define USB_PR_USBAT    0x80            /* SCM-ATAPI bridge */
  38 #define USB_PR_EUSB_SDDR09      0x81    /* SCM-SCSI bridge for SDDR-09 */
  39 #define USB_PR_SDDR55   0x82            /* SDDR-55 (made up) */
  40 #define USB_PR_DPCM_USB 0xf0            /* Combination CB/SDDR09 */
  41 #define USB_PR_FREECOM  0xf1            /* Freecom */
  42 #define USB_PR_DATAFAB  0xf2            /* Datafab chipsets */
  43 #define USB_PR_JUMPSHOT 0xf3            /* Lexar Jumpshot */
  44 #define USB_PR_ALAUDA   0xf4            /* Alauda chipsets */
  45 #define USB_PR_KARMA    0xf5            /* Rio Karma */
  46
  47 #define USB_PR_DEVICE   0xff            /* Use device's value */
  48
  49 /*
  50  * Bulk only data structures
  51  */
  52
  53 /* command block wrapper */
  54 struct bulk_cb_wrap {
  55         __le32  Signature;              /* contains 'USBC' */
  56         __u32   Tag;                    /* unique per command id */
  57         __le32  DataTransferLength;     /* size of data */
  58         __u8    Flags;                  /* direction in bit 0 */
  59         __u8    Lun;                    /* LUN normally 0 */
  60         __u8    Length;                 /* length of the CDB */
  61         __u8    CDB[16];                /* max command */
  62 };
  63
  64 #define US_BULK_CB_WRAP_LEN     31
  65 #define US_BULK_CB_SIGN         0x43425355      /* spells out 'USBC' */
  66 #define US_BULK_FLAG_IN         (1 << 7)
  67 #define US_BULK_FLAG_OUT        0
  68
  69 /* command status wrapper */
  70 struct bulk_cs_wrap {
  71         __le32  Signature;      /* contains 'USBS' */
  72         __u32   Tag;            /* same as original command */
  73         __le32  Residue;        /* amount not transferred */
  74         __u8    Status;         /* see below */
  75 };
  76
  77 #define US_BULK_CS_WRAP_LEN     13
  78 #define US_BULK_CS_SIGN         0x53425355      /* spells out 'USBS' */
  79 #define US_BULK_STAT_OK         0
  80 #define US_BULK_STAT_FAIL       1
  81 #define US_BULK_STAT_PHASE      2
  82
  83 /* bulk-only class specific requests */
  84 #define US_BULK_RESET_REQUEST   0xff
  85 #define US_BULK_GET_MAX_LUN     0xfe
  86
  87 #endif