linux/drivers/usb/storage/debug.c
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   1/* Driver for USB Mass Storage compliant devices
   2 * Debugging Functions Source Code File
   3 *
   4 * Current development and maintenance by:
   5 *   (c) 1999-2002 Matthew Dharm (mdharm-usb@one-eyed-alien.net)
   6 *
   7 * Developed with the assistance of:
   8 *   (c) 2002 Alan Stern <stern@rowland.org>
   9 *
  10 * Initial work by:
  11 *   (c) 1999 Michael Gee (michael@linuxspecific.com)
  12 *
  13 * This driver is based on the 'USB Mass Storage Class' document. This
  14 * describes in detail the protocol used to communicate with such
  15 * devices.  Clearly, the designers had SCSI and ATAPI commands in
  16 * mind when they created this document.  The commands are all very
  17 * similar to commands in the SCSI-II and ATAPI specifications.
  18 *
  19 * It is important to note that in a number of cases this class
  20 * exhibits class-specific exemptions from the USB specification.
  21 * Notably the usage of NAK, STALL and ACK differs from the norm, in
  22 * that they are used to communicate wait, failed and OK on commands.
  23 *
  24 * Also, for certain devices, the interrupt endpoint is used to convey
  25 * status of a command.
  26 *
  27 * Please see http://www.one-eyed-alien.net/~mdharm/linux-usb for more
  28 * information about this driver.
  29 *
  30 * This program is free software; you can redistribute it and/or modify it
  31 * under the terms of the GNU General Public License as published by the
  32 * Free Software Foundation; either version 2, or (at your option) any
  33 * later version.
  34 *
  35 * This program is distributed in the hope that it will be useful, but
  36 * WITHOUT ANY WARRANTY; without even the implied warranty of
  37 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  38 * General Public License for more details.
  39 *
  40 * You should have received a copy of the GNU General Public License along
  41 * with this program; if not, write to the Free Software Foundation, Inc.,
  42 * 675 Mass Ave, Cambridge, MA 02139, USA.
  43 */
  44
  45#include <linux/cdrom.h>
  46#include <scsi/scsi.h>
  47#include <scsi/scsi_cmnd.h>
  48#include <scsi/scsi_dbg.h>
  49
  50#include "debug.h"
  51#include "scsi.h"
  52
  53
  54void usb_stor_show_command(struct scsi_cmnd *srb)
  55{
  56        char *what = NULL;
  57        int i;
  58
  59        switch (srb->cmnd[0]) {
  60        case TEST_UNIT_READY: what = "TEST_UNIT_READY"; break;
  61        case REZERO_UNIT: what = "REZERO_UNIT"; break;
  62        case REQUEST_SENSE: what = "REQUEST_SENSE"; break;
  63        case FORMAT_UNIT: what = "FORMAT_UNIT"; break;
  64        case READ_BLOCK_LIMITS: what = "READ_BLOCK_LIMITS"; break;
  65        case REASSIGN_BLOCKS: what = "REASSIGN_BLOCKS"; break;
  66        case READ_6: what = "READ_6"; break;
  67        case WRITE_6: what = "WRITE_6"; break;
  68        case SEEK_6: what = "SEEK_6"; break;
  69        case READ_REVERSE: what = "READ_REVERSE"; break;
  70        case WRITE_FILEMARKS: what = "WRITE_FILEMARKS"; break;
  71        case SPACE: what = "SPACE"; break;
  72        case INQUIRY: what = "INQUIRY"; break;
  73        case RECOVER_BUFFERED_DATA: what = "RECOVER_BUFFERED_DATA"; break;
  74        case MODE_SELECT: what = "MODE_SELECT"; break;
  75        case RESERVE: what = "RESERVE"; break;
  76        case RELEASE: what = "RELEASE"; break;
  77        case COPY: what = "COPY"; break;
  78        case ERASE: what = "ERASE"; break;
  79        case MODE_SENSE: what = "MODE_SENSE"; break;
  80        case START_STOP: what = "START_STOP"; break;
  81        case RECEIVE_DIAGNOSTIC: what = "RECEIVE_DIAGNOSTIC"; break;
  82        case SEND_DIAGNOSTIC: what = "SEND_DIAGNOSTIC"; break;
  83        case ALLOW_MEDIUM_REMOVAL: what = "ALLOW_MEDIUM_REMOVAL"; break;
  84        case SET_WINDOW: what = "SET_WINDOW"; break;
  85        case READ_CAPACITY: what = "READ_CAPACITY"; break;
  86        case READ_10: what = "READ_10"; break;
  87        case WRITE_10: what = "WRITE_10"; break;
  88        case SEEK_10: what = "SEEK_10"; break;
  89        case WRITE_VERIFY: what = "WRITE_VERIFY"; break;
  90        case VERIFY: what = "VERIFY"; break;
  91        case SEARCH_HIGH: what = "SEARCH_HIGH"; break;
  92        case SEARCH_EQUAL: what = "SEARCH_EQUAL"; break;
  93        case SEARCH_LOW: what = "SEARCH_LOW"; break;
  94        case SET_LIMITS: what = "SET_LIMITS"; break;
  95        case READ_POSITION: what = "READ_POSITION"; break;
  96        case SYNCHRONIZE_CACHE: what = "SYNCHRONIZE_CACHE"; break;
  97        case LOCK_UNLOCK_CACHE: what = "LOCK_UNLOCK_CACHE"; break;
  98        case READ_DEFECT_DATA: what = "READ_DEFECT_DATA"; break;
  99        case MEDIUM_SCAN: what = "MEDIUM_SCAN"; break;
 100        case COMPARE: what = "COMPARE"; break;
 101        case COPY_VERIFY: what = "COPY_VERIFY"; break;
 102        case WRITE_BUFFER: what = "WRITE_BUFFER"; break;
 103        case READ_BUFFER: what = "READ_BUFFER"; break;
 104        case UPDATE_BLOCK: what = "UPDATE_BLOCK"; break;
 105        case READ_LONG: what = "READ_LONG"; break;
 106        case WRITE_LONG: what = "WRITE_LONG"; break;
 107        case CHANGE_DEFINITION: what = "CHANGE_DEFINITION"; break;
 108        case WRITE_SAME: what = "WRITE_SAME"; break;
 109        case GPCMD_READ_SUBCHANNEL: what = "READ SUBCHANNEL"; break;
 110        case READ_TOC: what = "READ_TOC"; break;
 111        case GPCMD_READ_HEADER: what = "READ HEADER"; break;
 112        case GPCMD_PLAY_AUDIO_10: what = "PLAY AUDIO (10)"; break;
 113        case GPCMD_PLAY_AUDIO_MSF: what = "PLAY AUDIO MSF"; break;
 114        case GPCMD_GET_EVENT_STATUS_NOTIFICATION:
 115                what = "GET EVENT/STATUS NOTIFICATION"; break;
 116        case GPCMD_PAUSE_RESUME: what = "PAUSE/RESUME"; break;
 117        case LOG_SELECT: what = "LOG_SELECT"; break;
 118        case LOG_SENSE: what = "LOG_SENSE"; break;
 119        case GPCMD_STOP_PLAY_SCAN: what = "STOP PLAY/SCAN"; break;
 120        case GPCMD_READ_DISC_INFO: what = "READ DISC INFORMATION"; break;
 121        case GPCMD_READ_TRACK_RZONE_INFO:
 122                what = "READ TRACK INFORMATION"; break;
 123        case GPCMD_RESERVE_RZONE_TRACK: what = "RESERVE TRACK"; break;
 124        case GPCMD_SEND_OPC: what = "SEND OPC"; break;
 125        case MODE_SELECT_10: what = "MODE_SELECT_10"; break;
 126        case GPCMD_REPAIR_RZONE_TRACK: what = "REPAIR TRACK"; break;
 127        case 0x59: what = "READ MASTER CUE"; break;
 128        case MODE_SENSE_10: what = "MODE_SENSE_10"; break;
 129        case GPCMD_CLOSE_TRACK: what = "CLOSE TRACK/SESSION"; break;
 130        case 0x5C: what = "READ BUFFER CAPACITY"; break;
 131        case 0x5D: what = "SEND CUE SHEET"; break;
 132        case GPCMD_BLANK: what = "BLANK"; break;
 133        case REPORT_LUNS: what = "REPORT LUNS"; break;
 134        case MOVE_MEDIUM: what = "MOVE_MEDIUM or PLAY AUDIO (12)"; break;
 135        case READ_12: what = "READ_12"; break;
 136        case WRITE_12: what = "WRITE_12"; break;
 137        case WRITE_VERIFY_12: what = "WRITE_VERIFY_12"; break;
 138        case SEARCH_HIGH_12: what = "SEARCH_HIGH_12"; break;
 139        case SEARCH_EQUAL_12: what = "SEARCH_EQUAL_12"; break;
 140        case SEARCH_LOW_12: what = "SEARCH_LOW_12"; break;
 141        case SEND_VOLUME_TAG: what = "SEND_VOLUME_TAG"; break;
 142        case READ_ELEMENT_STATUS: what = "READ_ELEMENT_STATUS"; break;
 143        case GPCMD_READ_CD_MSF: what = "READ CD MSF"; break;
 144        case GPCMD_SCAN: what = "SCAN"; break;
 145        case GPCMD_SET_SPEED: what = "SET CD SPEED"; break;
 146        case GPCMD_MECHANISM_STATUS: what = "MECHANISM STATUS"; break;
 147        case GPCMD_READ_CD: what = "READ CD"; break;
 148        case 0xE1: what = "WRITE CONTINUE"; break;
 149        case WRITE_LONG_2: what = "WRITE_LONG_2"; break;
 150        default: what = "(unknown command)"; break;
 151        }
 152        US_DEBUGP("Command %s (%d bytes)\n", what, srb->cmd_len);
 153        US_DEBUGP("");
 154        for (i = 0; i < srb->cmd_len && i < 16; i++)
 155                US_DEBUGPX(" %02x", srb->cmnd[i]);
 156        US_DEBUGPX("\n");
 157}
 158
 159void usb_stor_show_sense(
 160                unsigned char key,
 161                unsigned char asc,
 162                unsigned char ascq) {
 163
 164        const char *what, *keystr;
 165
 166        keystr = scsi_sense_key_string(key);
 167        what = scsi_extd_sense_format(asc, ascq);
 168
 169        if (keystr == NULL)
 170                keystr = "(Unknown Key)";
 171        if (what == NULL)
 172                what = "(unknown ASC/ASCQ)";
 173
 174        US_DEBUGP("%s: ", keystr);
 175        US_DEBUGPX(what, ascq);
 176        US_DEBUGPX("\n");
 177}
 178