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/* Driver for USB Mass Storage compliant devices
* Protocol Functions Header File
*
* $Id: protocol.h,v 1.3 2000/08/25 00:13:51 mdharm Exp $
*
* Current development and maintenance by:
* (c) 1999, 2000 Matthew Dharm (mdharm-usb@one-eyed-alien.net)
*
* This driver is based on the 'USB Mass Storage Class' document. This
* describes in detail the protocol used to communicate with such
* devices. Clearly, the designers had SCSI and ATAPI commands in
* mind when they created this document. The commands are all very
* similar to commands in the SCSI-II and ATAPI specifications.
*
* It is important to note that in a number of cases this class
* exhibits class-specific exemptions from the USB specification.
* Notably the usage of NAK, STALL and ACK differs from the norm, in
* that they are used to communicate wait, failed and OK on commands.
*
* Also, for certain devices, the interrupt endpoint is used to convey
* status of a command.
*
* Please see http://www.one-eyed-alien.net/~mdharm/linux-usb for more
* information about this driver.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef _PROTOCOL_H_
#define _PROTOCOL_H_
#include <linux/blk.h>
#include "scsi.h"
#include "usb.h"
/* Sub Classes */
#define US_SC_RBC 0x01 /* Typically, flash devices */
#define US_SC_8020 0x02 /* CD-ROM */
#define US_SC_QIC 0x03 /* QIC-157 Tapes */
#define US_SC_UFI 0x04 /* Floppy */
#define US_SC_8070 0x05 /* Removable media */
#define US_SC_SCSI 0x06 /* Transparent */
#define US_SC_MIN US_SC_RBC
#define US_SC_MAX US_SC_SCSI
extern void usb_stor_ATAPI_command(Scsi_Cmnd*, struct us_data*);
extern void usb_stor_qic157_command(Scsi_Cmnd*, struct us_data*);
extern void usb_stor_ufi_command(Scsi_Cmnd*, struct us_data*);
extern void usb_stor_transparent_scsi_command(Scsi_Cmnd*, struct us_data*);
#endif
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