1/* Driver for USB Mass Storage compliant devices
2 * Debugging Functions Header File
3 *
4 * $Id: debug.h,v 1.1.1.1 2007/08/03 18:53:02 Exp $
5 *
6 * Current development and maintenance by:
7 *   (c) 1999-2002 Matthew Dharm (mdharm-usb@one-eyed-alien.net)
8 *
9 * Initial work by:
10 *   (c) 1999 Michael Gee (michael@linuxspecific.com)
11 *
12 * This driver is based on the 'USB Mass Storage Class' document. This
13 * describes in detail the protocol used to communicate with such
14 * devices.  Clearly, the designers had SCSI and ATAPI commands in
15 * mind when they created this document.  The commands are all very
16 * similar to commands in the SCSI-II and ATAPI specifications.
17 *
18 * It is important to note that in a number of cases this class
19 * exhibits class-specific exemptions from the USB specification.
20 * Notably the usage of NAK, STALL and ACK differs from the norm, in
21 * that they are used to communicate wait, failed and OK on commands.
22 *
23 * Also, for certain devices, the interrupt endpoint is used to convey
24 * status of a command.
25 *
26 * Please see http://www.one-eyed-alien.net/~mdharm/linux-usb for more
27 * information about this driver.
28 *
29 * This program is free software; you can redistribute it and/or modify it
30 * under the terms of the GNU General Public License as published by the
31 * Free Software Foundation; either version 2, or (at your option) any
32 * later version.
33 *
34 * This program is distributed in the hope that it will be useful, but
35 * WITHOUT ANY WARRANTY; without even the implied warranty of
36 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
37 * General Public License for more details.
38 *
39 * You should have received a copy of the GNU General Public License along
40 * with this program; if not, write to the Free Software Foundation, Inc.,
41 * 675 Mass Ave, Cambridge, MA 02139, USA.
42 */
43
44#ifndef _DEBUG_H_
45#define _DEBUG_H_
46
47#include <linux/kernel.h>
48
49#define USB_STORAGE "usb-storage: "
50
51#ifdef CONFIG_USB_STORAGE_DEBUG
52void usb_stor_show_command(struct scsi_cmnd *srb);
53void usb_stor_show_sense( unsigned char key,
54		unsigned char asc, unsigned char ascq );
55#define US_DEBUGP(x...) printk( KERN_DEBUG USB_STORAGE x )
56#define US_DEBUGPX(x...) printk( x )
57#define US_DEBUG(x) x
58#else
59#define US_DEBUGP(x...)
60#define US_DEBUGPX(x...)
61#define US_DEBUG(x)
62#endif
63
64#endif
65