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// SPDX-License-Identifier: GPL-2.0
#ifndef __LINUX_USB_STORAGE_H
#define __LINUX_USB_STORAGE_H
/*
* linux/usb/storage.h
*
* Copyright Matthew Wilcox for Intel Corp, 2010
*
* This file contains definitions taken from the
* USB Mass Storage Class Specification Overview
*
* Distributed under the terms of the GNU GPL, version two.
*/
/* Storage subclass codes */
#define USB_SC_RBC 0x01 /* Typically, flash devices */
#define USB_SC_8020 0x02 /* CD-ROM */
#define USB_SC_QIC 0x03 /* QIC-157 Tapes */
#define USB_SC_UFI 0x04 /* Floppy */
#define USB_SC_8070 0x05 /* Removable media */
#define USB_SC_SCSI 0x06 /* Transparent */
#define USB_SC_LOCKABLE 0x07 /* Password-protected */
#define USB_SC_ISD200 0xf0 /* ISD200 ATA */
#define USB_SC_CYP_ATACB 0xf1 /* Cypress ATACB */
#define USB_SC_DEVICE 0xff /* Use device's value */
/* Storage protocol codes */
#define USB_PR_CBI 0x00 /* Control/Bulk/Interrupt */
#define USB_PR_CB 0x01 /* Control/Bulk w/o interrupt */
#define USB_PR_BULK 0x50 /* bulk only */
#define USB_PR_UAS 0x62 /* USB Attached SCSI */
#define USB_PR_USBAT 0x80 /* SCM-ATAPI bridge */
#define USB_PR_EUSB_SDDR09 0x81 /* SCM-SCSI bridge for SDDR-09 */
#define USB_PR_SDDR55 0x82 /* SDDR-55 (made up) */
#define USB_PR_DPCM_USB 0xf0 /* Combination CB/SDDR09 */
#define USB_PR_FREECOM 0xf1 /* Freecom */
#define USB_PR_DATAFAB 0xf2 /* Datafab chipsets */
#define USB_PR_JUMPSHOT 0xf3 /* Lexar Jumpshot */
#define USB_PR_ALAUDA 0xf4 /* Alauda chipsets */
#define USB_PR_KARMA 0xf5 /* Rio Karma */
#define USB_PR_DEVICE 0xff /* Use device's value */
/*
* Bulk only data structures
*/
/* command block wrapper */
struct bulk_cb_wrap {
__le32 Signature; /* contains 'USBC' */
__u32 Tag; /* unique per command id */
__le32 DataTransferLength; /* size of data */
__u8 Flags; /* direction in bit 0 */
__u8 Lun; /* LUN normally 0 */
__u8 Length; /* length of the CDB */
__u8 CDB[16]; /* max command */
};
#define US_BULK_CB_WRAP_LEN 31
#define US_BULK_CB_SIGN 0x43425355 /* spells out 'USBC' */
#define US_BULK_FLAG_IN (1 << 7)
#define US_BULK_FLAG_OUT 0
/* command status wrapper */
struct bulk_cs_wrap {
__le32 Signature; /* contains 'USBS' */
__u32 Tag; /* same as original command */
__le32 Residue; /* amount not transferred */
__u8 Status; /* see below */
};
#define US_BULK_CS_WRAP_LEN 13
#define US_BULK_CS_SIGN 0x53425355 /* spells out 'USBS' */
#define US_BULK_STAT_OK 0
#define US_BULK_STAT_FAIL 1
#define US_BULK_STAT_PHASE 2
/* bulk-only class specific requests */
#define US_BULK_RESET_REQUEST 0xff
#define US_BULK_GET_MAX_LUN 0xfe
#endif