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;			/* 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 */
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;	/* should = '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