| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 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 | |
| 47 | #include <linux/config.h> |
| 48 | #include <linux/kernel.h> |
| 49 | |
| 50 | #define USB_STORAGE "usb-storage: " |
| 51 | |
| 52 | #ifdef CONFIG_USB_STORAGE_DEBUG |
| 53 | void usb_stor_show_command(struct scsi_cmnd *srb); |
| 54 | void usb_stor_show_sense( unsigned char key, |
| 55 | unsigned char asc, unsigned char ascq ); |
| 56 | #define US_DEBUGP(x...) printk( KERN_DEBUG USB_STORAGE x ) |
| 57 | #define US_DEBUGPX(x...) printk( x ) |
| 58 | #define US_DEBUG(x) x |
| 59 | #else |
| 60 | #define US_DEBUGP(x...) |
| 61 | #define US_DEBUGPX(x...) |
| 62 | #define US_DEBUG(x) |
| 63 | #endif |
| 64 | |
| 65 | #endif |