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Matthew Wilcoxae6d22f2010-10-07 13:05:22 +02001#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
Sebastian Andrzej Siewior7ac47042012-02-25 18:28:09 +010048 /*
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; /* of 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 */
Sebastian Andrzej Siewiorb8db6d62012-02-25 18:28:10 +010065#define US_BULK_FLAG_IN (1 << 7)
Sebastian Andrzej Siewior7ac47042012-02-25 18:28:09 +010066#define US_BULK_FLAG_OUT 0
67
68/* command status wrapper */
69struct bulk_cs_wrap {
70 __le32 Signature; /* should = 'USBS' */
71 __u32 Tag; /* same as original command */
72 __le32 Residue; /* amount not transferred */
73 __u8 Status; /* see below */
Sebastian Andrzej Siewior7ac47042012-02-25 18:28:09 +010074};
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
Matthew Wilcoxae6d22f2010-10-07 13:05:22 +020086#endif