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1da177e4 LT |
1 | /* Driver for USB Mass Storage compliant devices |
2 | * Debugging Functions Header File | |
3 | * | |
4 | * $Id: debug.h,v 1.6 2001/01/12 23:51:04 mdharm 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 | ||
1da177e4 LT |
47 | #include <linux/kernel.h> |
48 | ||
49 | #define USB_STORAGE "usb-storage: " | |
50 | ||
51 | #ifdef CONFIG_USB_STORAGE_DEBUG | |
52 | void usb_stor_show_command(struct scsi_cmnd *srb); | |
53 | void 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 |