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