drivers/scsi/constants.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * ASCII values for a number of symbolic constants, printing functions,
   4  * etc.
   5  * Additions for SCSI 2 and Linux 2.2.x by D. Gilbert (990422)
   6  * Additions for SCSI 3+ (SPC-3 T10/1416-D Rev 07 3 May 2002)
   7  *   by D. Gilbert and aeb (20020609)
   8  * Updated to SPC-4 T10/1713-D Rev 36g, D. Gilbert 20130701
   9  */
  10
  11 #include <linux/blkdev.h>
  12 #include <linux/module.h>
  13 #include <linux/kernel.h>
  14
  15 #include <scsi/scsi.h>
  16 #include <scsi/scsi_cmnd.h>
  17 #include <scsi/scsi_device.h>
  18 #include <scsi/scsi_host.h>
  19 #include <scsi/scsi_eh.h>
  20 #include <scsi/scsi_dbg.h>
  21
  22 /* Commands with service actions that change the command name */
  23 #define THIRD_PARTY_COPY_OUT 0x83
  24 #define THIRD_PARTY_COPY_IN 0x84
  25
  26 struct sa_name_list {
  27         int opcode;
  28         const struct value_name_pair *arr;
  29         int arr_sz;
  30 };
  31
  32 struct value_name_pair {
  33         int value;
  34         const char * name;
  35 };
  36
  37 static const char * cdb_byte0_names[] = {
  38 /* 00-03 */ "Test Unit Ready", "Rezero Unit/Rewind", NULL, "Request Sense",
  39 /* 04-07 */ "Format Unit/Medium", "Read Block Limits", NULL,
  40             "Reassign Blocks",
  41 /* 08-0d */ "Read(6)", NULL, "Write(6)", "Seek(6)", NULL, NULL,
  42 /* 0e-12 */ NULL, "Read Reverse", "Write Filemarks", "Space", "Inquiry",
  43 /* 13-16 */ "Verify(6)", "Recover Buffered Data", "Mode Select(6)",
  44             "Reserve(6)",
  45 /* 17-1a */ "Release(6)", "Copy", "Erase", "Mode Sense(6)",
  46 /* 1b-1d */ "Start/Stop Unit", "Receive Diagnostic", "Send Diagnostic",
  47 /* 1e-1f */ "Prevent/Allow Medium Removal", NULL,
  48 /* 20-22 */  NULL, NULL, NULL,
  49 /* 23-28 */ "Read Format Capacities", "Set Window",
  50             "Read Capacity(10)", NULL, NULL, "Read(10)",
  51 /* 29-2d */ "Read Generation", "Write(10)", "Seek(10)", "Erase(10)",
  52             "Read updated block",
  53 /* 2e-31 */ "Write Verify(10)", "Verify(10)", "Search High", "Search Equal",
  54 /* 32-34 */ "Search Low", "Set Limits", "Prefetch/Read Position",
  55 /* 35-37 */ "Synchronize Cache(10)", "Lock/Unlock Cache(10)",
  56             "Read Defect Data(10)",
  57 /* 38-3c */ "Medium Scan", "Compare", "Copy Verify", "Write Buffer",
  58             "Read Buffer",
  59 /* 3d-3f */ "Update Block", "Read Long(10)",  "Write Long(10)",
  60 /* 40-41 */ "Change Definition", "Write Same(10)",
  61 /* 42-48 */ "Unmap/Read sub-channel", "Read TOC/PMA/ATIP",
  62             "Read density support", "Play audio(10)", "Get configuration",
  63             "Play audio msf", "Sanitize/Play audio track/index",
  64 /* 49-4f */ "Play track relative(10)", "Get event status notification",
  65             "Pause/resume", "Log Select", "Log Sense", "Stop play/scan",
  66             NULL,
  67 /* 50-55 */ "Xdwrite", "Xpwrite, Read disk info", "Xdread, Read track info",
  68             "Reserve track", "Send OPC info", "Mode Select(10)",
  69 /* 56-5b */ "Reserve(10)", "Release(10)", "Repair track", "Read master cue",
  70             "Mode Sense(10)", "Close track/session",
  71 /* 5c-5f */ "Read buffer capacity", "Send cue sheet", "Persistent reserve in",
  72             "Persistent reserve out",
  73 /* 60-67 */ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  74 /* 68-6f */ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  75 /* 70-77 */ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  76 /* 78-7f */ NULL, NULL, NULL, NULL, NULL, NULL, "Extended CDB",
  77             "Variable length",
  78 /* 80-84 */ "Xdwrite(16)", "Rebuild(16)", "Regenerate(16)",
  79             "Third party copy out", "Third party copy in",
  80 /* 85-89 */ "ATA command pass through(16)", "Access control in",
  81             "Access control out", "Read(16)", "Compare and Write",
  82 /* 8a-8f */ "Write(16)", "ORWrite", "Read attributes", "Write attributes",
  83             "Write and verify(16)", "Verify(16)",
  84 /* 90-94 */ "Pre-fetch(16)", "Synchronize cache(16)",
  85             "Lock/unlock cache(16)", "Write same(16)", NULL,
  86 /* 95-99 */ NULL, NULL, NULL, NULL, NULL,
  87 /* 9a-9f */ NULL, NULL, NULL, "Service action bidirectional",
  88             "Service action in(16)", "Service action out(16)",
  89 /* a0-a5 */ "Report luns", "ATA command pass through(12)/Blank",
  90             "Security protocol in", "Maintenance in", "Maintenance out",
  91             "Move medium/play audio(12)",
  92 /* a6-a9 */ "Exchange medium", "Move medium attached", "Read(12)",
  93             "Play track relative(12)",
  94 /* aa-ae */ "Write(12)", NULL, "Erase(12), Get Performance",
  95             "Read DVD structure", "Write and verify(12)",
  96 /* af-b1 */ "Verify(12)", "Search data high(12)", "Search data equal(12)",
  97 /* b2-b4 */ "Search data low(12)", "Set limits(12)",
  98             "Read element status attached",
  99 /* b5-b6 */ "Security protocol out", "Send volume tag, set streaming",
 100 /* b7-b9 */ "Read defect data(12)", "Read element status", "Read CD msf",
 101 /* ba-bc */ "Redundancy group (in), Scan",
 102             "Redundancy group (out), Set cd-rom speed", "Spare (in), Play cd",
 103 /* bd-bf */ "Spare (out), Mechanism status", "Volume set (in), Read cd",
 104             "Volume set (out), Send DVD structure",
 105 };
 106
 107 static const struct value_name_pair maint_in_arr[] = {
 108         {0x5, "Report identifying information"},
 109         {0xa, "Report target port groups"},
 110         {0xb, "Report aliases"},
 111         {0xc, "Report supported operation codes"},
 112         {0xd, "Report supported task management functions"},
 113         {0xe, "Report priority"},
 114         {0xf, "Report timestamp"},
 115         {0x10, "Management protocol in"},
 116 };
 117 #define MAINT_IN_SZ ARRAY_SIZE(maint_in_arr)
 118
 119 static const struct value_name_pair maint_out_arr[] = {
 120         {0x6, "Set identifying information"},
 121         {0xa, "Set target port groups"},
 122         {0xb, "Change aliases"},
 123         {0xc, "Remove I_T nexus"},
 124         {0xe, "Set priority"},
 125         {0xf, "Set timestamp"},
 126         {0x10, "Management protocol out"},
 127 };
 128 #define MAINT_OUT_SZ ARRAY_SIZE(maint_out_arr)
 129
 130 static const struct value_name_pair serv_in12_arr[] = {
 131         {0x1, "Read media serial number"},
 132 };
 133 #define SERV_IN12_SZ ARRAY_SIZE(serv_in12_arr)
 134
 135 static const struct value_name_pair serv_out12_arr[] = {
 136         {-1, "dummy entry"},
 137 };
 138 #define SERV_OUT12_SZ ARRAY_SIZE(serv_out12_arr)
 139
 140 static const struct value_name_pair serv_bidi_arr[] = {
 141         {-1, "dummy entry"},
 142 };
 143 #define SERV_BIDI_SZ ARRAY_SIZE(serv_bidi_arr)
 144
 145 static const struct value_name_pair serv_in16_arr[] = {
 146         {0x10, "Read capacity(16)"},
 147         {0x11, "Read long(16)"},
 148         {0x12, "Get LBA status"},
 149         {0x13, "Report referrals"},
 150 };
 151 #define SERV_IN16_SZ ARRAY_SIZE(serv_in16_arr)
 152
 153 static const struct value_name_pair serv_out16_arr[] = {
 154         {0x11, "Write long(16)"},
 155         {0x1f, "Notify data transfer device(16)"},
 156 };
 157 #define SERV_OUT16_SZ ARRAY_SIZE(serv_out16_arr)
 158
 159 static const struct value_name_pair pr_in_arr[] = {
 160         {0x0, "Persistent reserve in, read keys"},
 161         {0x1, "Persistent reserve in, read reservation"},
 162         {0x2, "Persistent reserve in, report capabilities"},
 163         {0x3, "Persistent reserve in, read full status"},
 164 };
 165 #define PR_IN_SZ ARRAY_SIZE(pr_in_arr)
 166
 167 static const struct value_name_pair pr_out_arr[] = {
 168         {0x0, "Persistent reserve out, register"},
 169         {0x1, "Persistent reserve out, reserve"},
 170         {0x2, "Persistent reserve out, release"},
 171         {0x3, "Persistent reserve out, clear"},
 172         {0x4, "Persistent reserve out, preempt"},
 173         {0x5, "Persistent reserve out, preempt and abort"},
 174         {0x6, "Persistent reserve out, register and ignore existing key"},
 175         {0x7, "Persistent reserve out, register and move"},
 176 };
 177 #define PR_OUT_SZ ARRAY_SIZE(pr_out_arr)
 178
 179 /* SPC-4 rev 34 renamed the Extended Copy opcode to Third Party Copy Out.
 180    LID1 (List Identifier length: 1 byte) is the Extended Copy found in SPC-2
 181    and SPC-3 */
 182 static const struct value_name_pair tpc_out_arr[] = {
 183         {0x0, "Extended copy(LID1)"},
 184         {0x1, "Extended copy(LID4)"},
 185         {0x10, "Populate token"},
 186         {0x11, "Write using token"},
 187         {0x1c, "Copy operation abort"},
 188 };
 189 #define TPC_OUT_SZ ARRAY_SIZE(tpc_out_arr)
 190
 191 static const struct value_name_pair tpc_in_arr[] = {
 192         {0x0, "Receive copy status(LID1)"},
 193         {0x1, "Receive copy data(LID1)"},
 194         {0x3, "Receive copy operating parameters"},
 195         {0x4, "Receive copy failure details(LID1)"},
 196         {0x5, "Receive copy status(LID4)"},
 197         {0x6, "Receive copy data(LID4)"},
 198         {0x7, "Receive ROD token information"},
 199         {0x8, "Report all ROD tokens"},
 200 };
 201 #define TPC_IN_SZ ARRAY_SIZE(tpc_in_arr)
 202
 203
 204 static const struct value_name_pair variable_length_arr[] = {
 205         {0x1, "Rebuild(32)"},
 206         {0x2, "Regenerate(32)"},
 207         {0x3, "Xdread(32)"},
 208         {0x4, "Xdwrite(32)"},
 209         {0x5, "Xdwrite extended(32)"},
 210         {0x6, "Xpwrite(32)"},
 211         {0x7, "Xdwriteread(32)"},
 212         {0x8, "Xdwrite extended(64)"},
 213         {0x9, "Read(32)"},
 214         {0xa, "Verify(32)"},
 215         {0xb, "Write(32)"},
 216         {0xc, "Write an verify(32)"},
 217         {0xd, "Write same(32)"},
 218         {0x8801, "Format OSD"},
 219         {0x8802, "Create (osd)"},
 220         {0x8803, "List (osd)"},
 221         {0x8805, "Read (osd)"},
 222         {0x8806, "Write (osd)"},
 223         {0x8807, "Append (osd)"},
 224         {0x8808, "Flush (osd)"},
 225         {0x880a, "Remove (osd)"},
 226         {0x880b, "Create partition (osd)"},
 227         {0x880c, "Remove partition (osd)"},
 228         {0x880e, "Get attributes (osd)"},
 229         {0x880f, "Set attributes (osd)"},
 230         {0x8812, "Create and write (osd)"},
 231         {0x8815, "Create collection (osd)"},
 232         {0x8816, "Remove collection (osd)"},
 233         {0x8817, "List collection (osd)"},
 234         {0x8818, "Set key (osd)"},
 235         {0x8819, "Set master key (osd)"},
 236         {0x881a, "Flush collection (osd)"},
 237         {0x881b, "Flush partition (osd)"},
 238         {0x881c, "Flush OSD"},
 239         {0x8f7e, "Perform SCSI command (osd)"},
 240         {0x8f7f, "Perform task management function (osd)"},
 241 };
 242 #define VARIABLE_LENGTH_SZ ARRAY_SIZE(variable_length_arr)
 243
 244 static struct sa_name_list sa_names_arr[] = {
 245         {VARIABLE_LENGTH_CMD, variable_length_arr, VARIABLE_LENGTH_SZ},
 246         {MAINTENANCE_IN, maint_in_arr, MAINT_IN_SZ},
 247         {MAINTENANCE_OUT, maint_out_arr, MAINT_OUT_SZ},
 248         {PERSISTENT_RESERVE_IN, pr_in_arr, PR_IN_SZ},
 249         {PERSISTENT_RESERVE_OUT, pr_out_arr, PR_OUT_SZ},
 250         {SERVICE_ACTION_IN_12, serv_in12_arr, SERV_IN12_SZ},
 251         {SERVICE_ACTION_OUT_12, serv_out12_arr, SERV_OUT12_SZ},
 252         {SERVICE_ACTION_BIDIRECTIONAL, serv_bidi_arr, SERV_BIDI_SZ},
 253         {SERVICE_ACTION_IN_16, serv_in16_arr, SERV_IN16_SZ},
 254         {SERVICE_ACTION_OUT_16, serv_out16_arr, SERV_OUT16_SZ},
 255         {THIRD_PARTY_COPY_IN, tpc_in_arr, TPC_IN_SZ},
 256         {THIRD_PARTY_COPY_OUT, tpc_out_arr, TPC_OUT_SZ},
 257         {0, NULL, 0},
 258 };
 259
 260 bool scsi_opcode_sa_name(int opcode, int service_action,
 261                          const char **cdb_name, const char **sa_name)
 262 {
 263         struct sa_name_list *sa_name_ptr;
 264         const struct value_name_pair *arr = NULL;
 265         int arr_sz, k;
 266
 267         *cdb_name = NULL;
 268         if (opcode >= VENDOR_SPECIFIC_CDB)
 269                 return false;
 270
 271         if (opcode < ARRAY_SIZE(cdb_byte0_names))
 272                 *cdb_name = cdb_byte0_names[opcode];
 273
 274         for (sa_name_ptr = sa_names_arr; sa_name_ptr->arr; ++sa_name_ptr) {
 275                 if (sa_name_ptr->opcode == opcode) {
 276                         arr = sa_name_ptr->arr;
 277                         arr_sz = sa_name_ptr->arr_sz;
 278                         break;
 279                 }
 280         }
 281         if (!arr)
 282                 return false;
 283
 284         for (k = 0; k < arr_sz; ++k, ++arr) {
 285                 if (service_action == arr->value)
 286                         break;
 287         }
 288         if (k < arr_sz)
 289                 *sa_name = arr->name;
 290
 291         return true;
 292 }
 293
 294 struct error_info {
 295         unsigned short code12;  /* 0x0302 looks better than 0x03,0x02 */
 296         unsigned short size;
 297 };
 298
 299 /*
 300  * There are 700+ entries in this table. To save space, we don't store
 301  * (code, pointer) pairs, which would make sizeof(struct
 302  * error_info)==16 on 64 bits. Rather, the second element just stores
 303  * the size (including \0) of the corresponding string, and we use the
 304  * sum of these to get the appropriate offset into additional_text
 305  * defined below. This approach saves 12 bytes per entry.
 306  */
 307 static const struct error_info additional[] =
 308 {
 309 #define SENSE_CODE(c, s) {c, sizeof(s)},
 310 #include "sense_codes.h"
 311 #undef SENSE_CODE
 312 };
 313
 314 static const char *additional_text =
 315 #define SENSE_CODE(c, s) s "\0"
 316 #include "sense_codes.h"
 317 #undef SENSE_CODE
 318         ;
 319
 320 struct error_info2 {
 321         unsigned char code1, code2_min, code2_max;
 322         const char * str;
 323         const char * fmt;
 324 };
 325
 326 static const struct error_info2 additional2[] =
 327 {
 328         {0x40, 0x00, 0x7f, "Ram failure", ""},
 329         {0x40, 0x80, 0xff, "Diagnostic failure on component", ""},
 330         {0x41, 0x00, 0xff, "Data path failure", ""},
 331         {0x42, 0x00, 0xff, "Power-on or self-test failure", ""},
 332         {0x4D, 0x00, 0xff, "Tagged overlapped commands", "task tag "},
 333         {0x70, 0x00, 0xff, "Decompression exception", "short algorithm id of "},
 334         {0, 0, 0, NULL, NULL}
 335 };
 336
 337 /* description of the sense key values */
 338 static const char * const snstext[] = {
 339         "No Sense",         /* 0: There is no sense information */
 340         "Recovered Error",  /* 1: The last command completed successfully
 341                                   but used error correction */
 342         "Not Ready",        /* 2: The addressed target is not ready */
 343         "Medium Error",     /* 3: Data error detected on the medium */
 344         "Hardware Error",   /* 4: Controller or device failure */
 345         "Illegal Request",  /* 5: Error in request */
 346         "Unit Attention",   /* 6: Removable medium was changed, or
 347                                   the target has been reset, or ... */
 348         "Data Protect",     /* 7: Access to the data is blocked */
 349         "Blank Check",      /* 8: Reached unexpected written or unwritten
 350                                   region of the medium */
 351         "Vendor Specific(9)",
 352         "Copy Aborted",     /* A: COPY or COMPARE was aborted */
 353         "Aborted Command",  /* B: The target aborted the command */
 354         "Equal",            /* C: A SEARCH DATA command found data equal,
 355                                   reserved in SPC-4 rev 36 */
 356         "Volume Overflow",  /* D: Medium full with still data to be written */
 357         "Miscompare",       /* E: Source data and data on the medium
 358                                   do not agree */
 359         "Completed",        /* F: command completed sense data reported,
 360                                   may occur for successful command */
 361 };
 362
 363 /* Get sense key string or NULL if not available */
 364 const char *
 365 scsi_sense_key_string(unsigned char key)
 366 {
 367         if (key < ARRAY_SIZE(snstext))
 368                 return snstext[key];
 369         return NULL;
 370 }
 371 EXPORT_SYMBOL(scsi_sense_key_string);
 372
 373 /*
 374  * Get additional sense code string or NULL if not available.
 375  * This string may contain a "%x" and should be printed with ascq as arg.
 376  */
 377 const char *
 378 scsi_extd_sense_format(unsigned char asc, unsigned char ascq, const char **fmt)
 379 {
 380         int i;
 381         unsigned short code = ((asc << 8) | ascq);
 382         unsigned offset = 0;
 383
 384         *fmt = NULL;
 385         for (i = 0; i < ARRAY_SIZE(additional); i++) {
 386                 if (additional[i].code12 == code)
 387                         return additional_text + offset;
 388                 offset += additional[i].size;
 389         }
 390         for (i = 0; additional2[i].fmt; i++) {
 391                 if (additional2[i].code1 == asc &&
 392                     ascq >= additional2[i].code2_min &&
 393                     ascq <= additional2[i].code2_max) {
 394                         *fmt = additional2[i].fmt;
 395                         return additional2[i].str;
 396                 }
 397         }
 398         return NULL;
 399 }
 400 EXPORT_SYMBOL(scsi_extd_sense_format);
 401
 402 static const char * const hostbyte_table[]={
 403 "DID_OK", "DID_NO_CONNECT", "DID_BUS_BUSY", "DID_TIME_OUT", "DID_BAD_TARGET",
 404 "DID_ABORT", "DID_PARITY", "DID_ERROR", "DID_RESET", "DID_BAD_INTR",
 405 "DID_PASSTHROUGH", "DID_SOFT_ERROR", "DID_IMM_RETRY", "DID_REQUEUE",
 406 "DID_TRANSPORT_DISRUPTED", "DID_TRANSPORT_FAILFAST", "DID_TARGET_FAILURE",
 407 "DID_NEXUS_FAILURE", "DID_ALLOC_FAILURE", "DID_MEDIUM_ERROR" };
 408
 409 const char *scsi_hostbyte_string(int result)
 410 {
 411         enum scsi_host_status hb = host_byte(result);
 412         const char *hb_string = NULL;
 413
 414         if (hb < ARRAY_SIZE(hostbyte_table))
 415                 hb_string = hostbyte_table[hb];
 416         return hb_string;
 417 }
 418 EXPORT_SYMBOL(scsi_hostbyte_string);
 419
 420 #define scsi_mlreturn_name(result)      { result, #result }
 421 static const struct value_name_pair scsi_mlreturn_arr[] = {
 422         scsi_mlreturn_name(NEEDS_RETRY),
 423         scsi_mlreturn_name(SUCCESS),
 424         scsi_mlreturn_name(FAILED),
 425         scsi_mlreturn_name(QUEUED),
 426         scsi_mlreturn_name(SOFT_ERROR),
 427         scsi_mlreturn_name(ADD_TO_MLQUEUE),
 428         scsi_mlreturn_name(TIMEOUT_ERROR),
 429         scsi_mlreturn_name(SCSI_RETURN_NOT_HANDLED),
 430         scsi_mlreturn_name(FAST_IO_FAIL)
 431 };
 432
 433 const char *scsi_mlreturn_string(int result)
 434 {
 435         const struct value_name_pair *arr = scsi_mlreturn_arr;
 436         int k;
 437
 438         for (k = 0; k < ARRAY_SIZE(scsi_mlreturn_arr); ++k, ++arr) {
 439                 if (result == arr->value)
 440                         return arr->name;
 441         }
 442         return NULL;
 443 }
 444 EXPORT_SYMBOL(scsi_mlreturn_string);