LXR linux/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
  26struct sa_name_list {
  27        int opcode;
  28        const struct value_name_pair *arr;
  29        int arr_sz;
  30};
  31
  32struct value_name_pair {
  33        int value;
  34        const char * name;
  35};
  36
  37static 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
 107static 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
 119static 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
 130static 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
 135static const struct value_name_pair serv_out12_arr[] = {
 136        {-1, "dummy entry"},
 137};
 138#define SERV_OUT12_SZ ARRAY_SIZE(serv_out12_arr)
 139
 140static const struct value_name_pair serv_bidi_arr[] = {
 141        {-1, "dummy entry"},
 142};
 143#define SERV_BIDI_SZ ARRAY_SIZE(serv_bidi_arr)
 144
 145static 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
 153static 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
 159static 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
 167static 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 */
 182static 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
 191static 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
 204static 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
 244static 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
 260bool 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
 294struct 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 */
 307static 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
 314static const char *additional_text =
 315#define SENSE_CODE(c, s) s "\0"
 316#include "sense_codes.h"
 317#undef SENSE_CODE
 318        ;
 319
 320struct error_info2 {
 321        unsigned char code1, code2_min, code2_max;
 322        const char * str;
 323        const char * fmt;
 324};
 325
 326static 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 */
 338static 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 */
 364const char *
 365scsi_sense_key_string(unsigned char key)
 366{
 367        if (key < ARRAY_SIZE(snstext))
 368                return snstext[key];
 369        return NULL;
 370}
 371EXPORT_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 */
 377const char *
 378scsi_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}
 400EXPORT_SYMBOL(scsi_extd_sense_format);
 401
 402static 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
 409const 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}
 418EXPORT_SYMBOL(scsi_hostbyte_string);
 419
 420#define scsi_mlreturn_name(result)      { result, #result }
 421static 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
 433const 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}
 444EXPORT_SYMBOL(scsi_mlreturn_string);
 445