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/device.h> 46 #include <linux/cdrom.h> 47 #include <linux/export.h> 48 #include <scsi/scsi.h> 49 #include <scsi/scsi_cmnd.h> 50 #include <scsi/scsi_dbg.h> 51 52 #include "usb.h" 53 #include "debug.h" 54 #include "scsi.h" 55 56 57 void usb_stor_show_command(const struct us_data *us, struct scsi_cmnd *srb) 58 { 59 char *what = NULL; 60 61 switch (srb->cmnd[0]) { 62 case TEST_UNIT_READY: what = "TEST_UNIT_READY"; break; 63 case REZERO_UNIT: what = "REZERO_UNIT"; break; 64 case REQUEST_SENSE: what = "REQUEST_SENSE"; break; 65 case FORMAT_UNIT: what = "FORMAT_UNIT"; break; 66 case READ_BLOCK_LIMITS: what = "READ_BLOCK_LIMITS"; break; 67 case REASSIGN_BLOCKS: what = "REASSIGN_BLOCKS"; break; 68 case READ_6: what = "READ_6"; break; 69 case WRITE_6: what = "WRITE_6"; break; 70 case SEEK_6: what = "SEEK_6"; break; 71 case READ_REVERSE: what = "READ_REVERSE"; break; 72 case WRITE_FILEMARKS: what = "WRITE_FILEMARKS"; break; 73 case SPACE: what = "SPACE"; break; 74 case INQUIRY: what = "INQUIRY"; break; 75 case RECOVER_BUFFERED_DATA: what = "RECOVER_BUFFERED_DATA"; break; 76 case MODE_SELECT: what = "MODE_SELECT"; break; 77 case RESERVE: what = "RESERVE"; break; 78 case RELEASE: what = "RELEASE"; break; 79 case COPY: what = "COPY"; break; 80 case ERASE: what = "ERASE"; break; 81 case MODE_SENSE: what = "MODE_SENSE"; break; 82 case START_STOP: what = "START_STOP"; break; 83 case RECEIVE_DIAGNOSTIC: what = "RECEIVE_DIAGNOSTIC"; break; 84 case SEND_DIAGNOSTIC: what = "SEND_DIAGNOSTIC"; break; 85 case ALLOW_MEDIUM_REMOVAL: what = "ALLOW_MEDIUM_REMOVAL"; break; 86 case SET_WINDOW: what = "SET_WINDOW"; break; 87 case READ_CAPACITY: what = "READ_CAPACITY"; break; 88 case READ_10: what = "READ_10"; break; 89 case WRITE_10: what = "WRITE_10"; break; 90 case SEEK_10: what = "SEEK_10"; break; 91 case WRITE_VERIFY: what = "WRITE_VERIFY"; break; 92 case VERIFY: what = "VERIFY"; break; 93 case SEARCH_HIGH: what = "SEARCH_HIGH"; break; 94 case SEARCH_EQUAL: what = "SEARCH_EQUAL"; break; 95 case SEARCH_LOW: what = "SEARCH_LOW"; break; 96 case SET_LIMITS: what = "SET_LIMITS"; break; 97 case READ_POSITION: what = "READ_POSITION"; break; 98 case SYNCHRONIZE_CACHE: what = "SYNCHRONIZE_CACHE"; break; 99 case LOCK_UNLOCK_CACHE: what = "LOCK_UNLOCK_CACHE"; break; 100 case READ_DEFECT_DATA: what = "READ_DEFECT_DATA"; break; 101 case MEDIUM_SCAN: what = "MEDIUM_SCAN"; break; 102 case COMPARE: what = "COMPARE"; break; 103 case COPY_VERIFY: what = "COPY_VERIFY"; break; 104 case WRITE_BUFFER: what = "WRITE_BUFFER"; break; 105 case READ_BUFFER: what = "READ_BUFFER"; break; 106 case UPDATE_BLOCK: what = "UPDATE_BLOCK"; break; 107 case READ_LONG: what = "READ_LONG"; break; 108 case WRITE_LONG: what = "WRITE_LONG"; break; 109 case CHANGE_DEFINITION: what = "CHANGE_DEFINITION"; break; 110 case WRITE_SAME: what = "WRITE_SAME"; break; 111 case GPCMD_READ_SUBCHANNEL: what = "READ SUBCHANNEL"; break; 112 case READ_TOC: what = "READ_TOC"; break; 113 case GPCMD_READ_HEADER: what = "READ HEADER"; break; 114 case GPCMD_PLAY_AUDIO_10: what = "PLAY AUDIO (10)"; break; 115 case GPCMD_PLAY_AUDIO_MSF: what = "PLAY AUDIO MSF"; break; 116 case GPCMD_GET_EVENT_STATUS_NOTIFICATION: 117 what = "GET EVENT/STATUS NOTIFICATION"; break; 118 case GPCMD_PAUSE_RESUME: what = "PAUSE/RESUME"; break; 119 case LOG_SELECT: what = "LOG_SELECT"; break; 120 case LOG_SENSE: what = "LOG_SENSE"; break; 121 case GPCMD_STOP_PLAY_SCAN: what = "STOP PLAY/SCAN"; break; 122 case GPCMD_READ_DISC_INFO: what = "READ DISC INFORMATION"; break; 123 case GPCMD_READ_TRACK_RZONE_INFO: 124 what = "READ TRACK INFORMATION"; break; 125 case GPCMD_RESERVE_RZONE_TRACK: what = "RESERVE TRACK"; break; 126 case GPCMD_SEND_OPC: what = "SEND OPC"; break; 127 case MODE_SELECT_10: what = "MODE_SELECT_10"; break; 128 case GPCMD_REPAIR_RZONE_TRACK: what = "REPAIR TRACK"; break; 129 case 0x59: what = "READ MASTER CUE"; break; 130 case MODE_SENSE_10: what = "MODE_SENSE_10"; break; 131 case GPCMD_CLOSE_TRACK: what = "CLOSE TRACK/SESSION"; break; 132 case 0x5C: what = "READ BUFFER CAPACITY"; break; 133 case 0x5D: what = "SEND CUE SHEET"; break; 134 case GPCMD_BLANK: what = "BLANK"; break; 135 case REPORT_LUNS: what = "REPORT LUNS"; break; 136 case MOVE_MEDIUM: what = "MOVE_MEDIUM or PLAY AUDIO (12)"; break; 137 case READ_12: what = "READ_12"; break; 138 case WRITE_12: what = "WRITE_12"; break; 139 case WRITE_VERIFY_12: what = "WRITE_VERIFY_12"; break; 140 case SEARCH_HIGH_12: what = "SEARCH_HIGH_12"; break; 141 case SEARCH_EQUAL_12: what = "SEARCH_EQUAL_12"; break; 142 case SEARCH_LOW_12: what = "SEARCH_LOW_12"; break; 143 case SEND_VOLUME_TAG: what = "SEND_VOLUME_TAG"; break; 144 case READ_ELEMENT_STATUS: what = "READ_ELEMENT_STATUS"; break; 145 case GPCMD_READ_CD_MSF: what = "READ CD MSF"; break; 146 case GPCMD_SCAN: what = "SCAN"; break; 147 case GPCMD_SET_SPEED: what = "SET CD SPEED"; break; 148 case GPCMD_MECHANISM_STATUS: what = "MECHANISM STATUS"; break; 149 case GPCMD_READ_CD: what = "READ CD"; break; 150 case 0xE1: what = "WRITE CONTINUE"; break; 151 case WRITE_LONG_2: what = "WRITE_LONG_2"; break; 152 default: what = "(unknown command)"; break; 153 } 154 usb_stor_dbg(us, "Command %s (%d bytes)\n", what, srb->cmd_len); 155 usb_stor_dbg(us, "bytes: %*ph\n", min_t(int, srb->cmd_len, 16), 156 (const unsigned char *)srb->cmnd); 157 } 158 159 void usb_stor_show_sense(const struct us_data *us, 160 unsigned char key, 161 unsigned char asc, 162 unsigned char ascq) 163 { 164 const char *what, *keystr, *fmt; 165 166 keystr = scsi_sense_key_string(key); 167 what = scsi_extd_sense_format(asc, ascq, &fmt); 168 169 if (keystr == NULL) 170 keystr = "(Unknown Key)"; 171 if (what == NULL) 172 what = "(unknown ASC/ASCQ)"; 173 174 if (fmt) 175 usb_stor_dbg(us, "%s: %s (%s%x)\n", keystr, what, fmt, ascq); 176 else 177 usb_stor_dbg(us, "%s: %s\n", keystr, what); 178 } 179 180 void usb_stor_dbg(const struct us_data *us, const char *fmt, ...) 181 { 182 va_list args; 183 184 va_start(args, fmt); 185 186 dev_vprintk_emit(LOGLEVEL_DEBUG, &us->pusb_dev->dev, fmt, args); 187 188 va_end(args); 189 } 190 EXPORT_SYMBOL_GPL(usb_stor_dbg); 191