LXR linux/drivers/scsi/constants.c

   1/*
   2 * ASCII values for a number of symbolic constants, printing functions,
   3 * etc.
   4 * Additions for SCSI 2 and Linux 2.2.x by D. Gilbert (990422)
   5 * Additions for SCSI 3+ (SPC-3 T10/1416-D Rev 07 3 May 2002)
   6 *   by D. Gilbert and aeb (20020609)
   7 * Updated to SPC-4 T10/1713-D Rev 36g, D. Gilbert 20130701
   8 */
   9
  10#include <linux/blkdev.h>
  11#include <linux/module.h>
  12#include <linux/kernel.h>
  13
  14#include <scsi/scsi.h>
  15#include <scsi/scsi_cmnd.h>
  16#include <scsi/scsi_device.h>
  17#include <scsi/scsi_host.h>
  18#include <scsi/scsi_eh.h>
  19#include <scsi/scsi_dbg.h>
  20
  21/* Commands with service actions that change the command name */
  22#define THIRD_PARTY_COPY_OUT 0x83
  23#define THIRD_PARTY_COPY_IN 0x84
  24
  25struct sa_name_list {
  26        int opcode;
  27        const struct value_name_pair *arr;
  28        int arr_sz;
  29};
  30
  31struct value_name_pair {
  32        int value;
  33        const char * name;
  34};
  35
  36static const char * cdb_byte0_names[] = {
  37/* 00-03 */ "Test Unit Ready", "Rezero Unit/Rewind", NULL, "Request Sense",
  38/* 04-07 */ "Format Unit/Medium", "Read Block Limits", NULL,
  39            "Reassign Blocks",
  40/* 08-0d */ "Read(6)", NULL, "Write(6)", "Seek(6)", NULL, NULL,
  41/* 0e-12 */ NULL, "Read Reverse", "Write Filemarks", "Space", "Inquiry",
  42/* 13-16 */ "Verify(6)", "Recover Buffered Data", "Mode Select(6)",
  43            "Reserve(6)",
  44/* 17-1a */ "Release(6)", "Copy", "Erase", "Mode Sense(6)",
  45/* 1b-1d */ "Start/Stop Unit", "Receive Diagnostic", "Send Diagnostic",
  46/* 1e-1f */ "Prevent/Allow Medium Removal", NULL,
  47/* 20-22 */  NULL, NULL, NULL,
  48/* 23-28 */ "Read Format Capacities", "Set Window",
  49            "Read Capacity(10)", NULL, NULL, "Read(10)",
  50/* 29-2d */ "Read Generation", "Write(10)", "Seek(10)", "Erase(10)",
  51            "Read updated block",
  52/* 2e-31 */ "Write Verify(10)", "Verify(10)", "Search High", "Search Equal",
  53/* 32-34 */ "Search Low", "Set Limits", "Prefetch/Read Position",
  54/* 35-37 */ "Synchronize Cache(10)", "Lock/Unlock Cache(10)",
  55            "Read Defect Data(10)",
  56/* 38-3c */ "Medium Scan", "Compare", "Copy Verify", "Write Buffer",
  57            "Read Buffer",
  58/* 3d-3f */ "Update Block", "Read Long(10)",  "Write Long(10)",
  59/* 40-41 */ "Change Definition", "Write Same(10)",
  60/* 42-48 */ "Unmap/Read sub-channel", "Read TOC/PMA/ATIP",
  61            "Read density support", "Play audio(10)", "Get configuration",
  62            "Play audio msf", "Sanitize/Play audio track/index",
  63/* 49-4f */ "Play track relative(10)", "Get event status notification",
  64            "Pause/resume", "Log Select", "Log Sense", "Stop play/scan",
  65            NULL,
  66/* 50-55 */ "Xdwrite", "Xpwrite, Read disk info", "Xdread, Read track info",
  67            "Reserve track", "Send OPC info", "Mode Select(10)",
  68/* 56-5b */ "Reserve(10)", "Release(10)", "Repair track", "Read master cue",
  69            "Mode Sense(10)", "Close track/session",
  70/* 5c-5f */ "Read buffer capacity", "Send cue sheet", "Persistent reserve in",
  71            "Persistent reserve out",
  72/* 60-67 */ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  73/* 68-6f */ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  74/* 70-77 */ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  75/* 78-7f */ NULL, NULL, NULL, NULL, NULL, NULL, "Extended CDB",
  76            "Variable length",
  77/* 80-84 */ "Xdwrite(16)", "Rebuild(16)", "Regenerate(16)",
  78            "Third party copy out", "Third party copy in",
  79/* 85-89 */ "ATA command pass through(16)", "Access control in",
  80            "Access control out", "Read(16)", "Compare and Write",
  81/* 8a-8f */ "Write(16)", "ORWrite", "Read attributes", "Write attributes",
  82            "Write and verify(16)", "Verify(16)",
  83/* 90-94 */ "Pre-fetch(16)", "Synchronize cache(16)",
  84            "Lock/unlock cache(16)", "Write same(16)", NULL,
  85/* 95-99 */ NULL, NULL, NULL, NULL, NULL,
  86/* 9a-9f */ NULL, NULL, NULL, "Service action bidirectional",
  87            "Service action in(16)", "Service action out(16)",
  88/* a0-a5 */ "Report luns", "ATA command pass through(12)/Blank",
  89            "Security protocol in", "Maintenance in", "Maintenance out",
  90            "Move medium/play audio(12)",
  91/* a6-a9 */ "Exchange medium", "Move medium attached", "Read(12)",
  92            "Play track relative(12)",
  93/* aa-ae */ "Write(12)", NULL, "Erase(12), Get Performance",
  94            "Read DVD structure", "Write and verify(12)",
  95/* af-b1 */ "Verify(12)", "Search data high(12)", "Search data equal(12)",
  96/* b2-b4 */ "Search data low(12)", "Set limits(12)",
  97            "Read element status attached",
  98/* b5-b6 */ "Security protocol out", "Send volume tag, set streaming",
  99/* b7-b9 */ "Read defect data(12)", "Read element status", "Read CD msf",
 100/* ba-bc */ "Redundancy group (in), Scan",
 101            "Redundancy group (out), Set cd-rom speed", "Spare (in), Play cd",
 102/* bd-bf */ "Spare (out), Mechanism status", "Volume set (in), Read cd",
 103            "Volume set (out), Send DVD structure",
 104};
 105
 106static const struct value_name_pair maint_in_arr[] = {
 107        {0x5, "Report identifying information"},
 108        {0xa, "Report target port groups"},
 109        {0xb, "Report aliases"},
 110        {0xc, "Report supported operation codes"},
 111        {0xd, "Report supported task management functions"},
 112        {0xe, "Report priority"},
 113        {0xf, "Report timestamp"},
 114        {0x10, "Management protocol in"},
 115};
 116#define MAINT_IN_SZ ARRAY_SIZE(maint_in_arr)
 117
 118static const struct value_name_pair maint_out_arr[] = {
 119        {0x6, "Set identifying information"},
 120        {0xa, "Set target port groups"},
 121        {0xb, "Change aliases"},
 122        {0xc, "Remove I_T nexus"},
 123        {0xe, "Set priority"},
 124        {0xf, "Set timestamp"},
 125        {0x10, "Management protocol out"},
 126};
 127#define MAINT_OUT_SZ ARRAY_SIZE(maint_out_arr)
 128
 129static const struct value_name_pair serv_in12_arr[] = {
 130        {0x1, "Read media serial number"},
 131};
 132#define SERV_IN12_SZ ARRAY_SIZE(serv_in12_arr)
 133
 134static const struct value_name_pair serv_out12_arr[] = {
 135        {-1, "dummy entry"},
 136};
 137#define SERV_OUT12_SZ ARRAY_SIZE(serv_out12_arr)
 138
 139static const struct value_name_pair serv_bidi_arr[] = {
 140        {-1, "dummy entry"},
 141};
 142#define SERV_BIDI_SZ ARRAY_SIZE(serv_bidi_arr)
 143
 144static const struct value_name_pair serv_in16_arr[] = {
 145        {0x10, "Read capacity(16)"},
 146        {0x11, "Read long(16)"},
 147        {0x12, "Get LBA status"},
 148        {0x13, "Report referrals"},
 149};
 150#define SERV_IN16_SZ ARRAY_SIZE(serv_in16_arr)
 151
 152static const struct value_name_pair serv_out16_arr[] = {
 153        {0x11, "Write long(16)"},
 154        {0x1f, "Notify data transfer device(16)"},
 155};
 156#define SERV_OUT16_SZ ARRAY_SIZE(serv_out16_arr)
 157
 158static const struct value_name_pair pr_in_arr[] = {
 159        {0x0, "Persistent reserve in, read keys"},
 160        {0x1, "Persistent reserve in, read reservation"},
 161        {0x2, "Persistent reserve in, report capabilities"},
 162        {0x3, "Persistent reserve in, read full status"},
 163};
 164#define PR_IN_SZ ARRAY_SIZE(pr_in_arr)
 165
 166static const struct value_name_pair pr_out_arr[] = {
 167        {0x0, "Persistent reserve out, register"},
 168        {0x1, "Persistent reserve out, reserve"},
 169        {0x2, "Persistent reserve out, release"},
 170        {0x3, "Persistent reserve out, clear"},
 171        {0x4, "Persistent reserve out, preempt"},
 172        {0x5, "Persistent reserve out, preempt and abort"},
 173        {0x6, "Persistent reserve out, register and ignore existing key"},
 174        {0x7, "Persistent reserve out, register and move"},
 175};
 176#define PR_OUT_SZ ARRAY_SIZE(pr_out_arr)
 177
 178/* SPC-4 rev 34 renamed the Extended Copy opcode to Third Party Copy Out.
 179   LID1 (List Identifier length: 1 byte) is the Extended Copy found in SPC-2
 180   and SPC-3 */
 181static const struct value_name_pair tpc_out_arr[] = {
 182        {0x0, "Extended copy(LID1)"},
 183        {0x1, "Extended copy(LID4)"},
 184        {0x10, "Populate token"},
 185        {0x11, "Write using token"},
 186        {0x1c, "Copy operation abort"},
 187};
 188#define TPC_OUT_SZ ARRAY_SIZE(tpc_out_arr)
 189
 190static const struct value_name_pair tpc_in_arr[] = {
 191        {0x0, "Receive copy status(LID1)"},
 192        {0x1, "Receive copy data(LID1)"},
 193        {0x3, "Receive copy operating parameters"},
 194        {0x4, "Receive copy failure details(LID1)"},
 195        {0x5, "Receive copy status(LID4)"},
 196        {0x6, "Receive copy data(LID4)"},
 197        {0x7, "Receive ROD token information"},
 198        {0x8, "Report all ROD tokens"},
 199};
 200#define TPC_IN_SZ ARRAY_SIZE(tpc_in_arr)
 201
 202
 203static const struct value_name_pair variable_length_arr[] = {
 204        {0x1, "Rebuild(32)"},
 205        {0x2, "Regenerate(32)"},
 206        {0x3, "Xdread(32)"},
 207        {0x4, "Xdwrite(32)"},
 208        {0x5, "Xdwrite extended(32)"},
 209        {0x6, "Xpwrite(32)"},
 210        {0x7, "Xdwriteread(32)"},
 211        {0x8, "Xdwrite extended(64)"},
 212        {0x9, "Read(32)"},
 213        {0xa, "Verify(32)"},
 214        {0xb, "Write(32)"},
 215        {0xc, "Write an verify(32)"},
 216        {0xd, "Write same(32)"},
 217        {0x8801, "Format OSD"},
 218        {0x8802, "Create (osd)"},
 219        {0x8803, "List (osd)"},
 220        {0x8805, "Read (osd)"},
 221        {0x8806, "Write (osd)"},
 222        {0x8807, "Append (osd)"},
 223        {0x8808, "Flush (osd)"},
 224        {0x880a, "Remove (osd)"},
 225        {0x880b, "Create partition (osd)"},
 226        {0x880c, "Remove partition (osd)"},
 227        {0x880e, "Get attributes (osd)"},
 228        {0x880f, "Set attributes (osd)"},
 229        {0x8812, "Create and write (osd)"},
 230        {0x8815, "Create collection (osd)"},
 231        {0x8816, "Remove collection (osd)"},
 232        {0x8817, "List collection (osd)"},
 233        {0x8818, "Set key (osd)"},
 234        {0x8819, "Set master key (osd)"},
 235        {0x881a, "Flush collection (osd)"},
 236        {0x881b, "Flush partition (osd)"},
 237        {0x881c, "Flush OSD"},
 238        {0x8f7e, "Perform SCSI command (osd)"},
 239        {0x8f7f, "Perform task management function (osd)"},
 240};
 241#define VARIABLE_LENGTH_SZ ARRAY_SIZE(variable_length_arr)
 242
 243static struct sa_name_list sa_names_arr[] = {
 244        {VARIABLE_LENGTH_CMD, variable_length_arr, VARIABLE_LENGTH_SZ},
 245        {MAINTENANCE_IN, maint_in_arr, MAINT_IN_SZ},
 246        {MAINTENANCE_OUT, maint_out_arr, MAINT_OUT_SZ},
 247        {PERSISTENT_RESERVE_IN, pr_in_arr, PR_IN_SZ},
 248        {PERSISTENT_RESERVE_OUT, pr_out_arr, PR_OUT_SZ},
 249        {SERVICE_ACTION_IN_12, serv_in12_arr, SERV_IN12_SZ},
 250        {SERVICE_ACTION_OUT_12, serv_out12_arr, SERV_OUT12_SZ},
 251        {SERVICE_ACTION_BIDIRECTIONAL, serv_bidi_arr, SERV_BIDI_SZ},
 252        {SERVICE_ACTION_IN_16, serv_in16_arr, SERV_IN16_SZ},
 253        {SERVICE_ACTION_OUT_16, serv_out16_arr, SERV_OUT16_SZ},
 254        {THIRD_PARTY_COPY_IN, tpc_in_arr, TPC_IN_SZ},
 255        {THIRD_PARTY_COPY_OUT, tpc_out_arr, TPC_OUT_SZ},
 256        {0, NULL, 0},
 257};
 258
 259bool scsi_opcode_sa_name(int opcode, int service_action,
 260                         const char **cdb_name, const char **sa_name)
 261{
 262        struct sa_name_list *sa_name_ptr;
 263        const struct value_name_pair *arr = NULL;
 264        int arr_sz, k;
 265
 266        *cdb_name = NULL;
 267        if (opcode >= VENDOR_SPECIFIC_CDB)
 268                return false;
 269
 270        if (opcode < ARRAY_SIZE(cdb_byte0_names))
 271                *cdb_name = cdb_byte0_names[opcode];
 272
 273        for (sa_name_ptr = sa_names_arr; sa_name_ptr->arr; ++sa_name_ptr) {
 274                if (sa_name_ptr->opcode == opcode) {
 275                        arr = sa_name_ptr->arr;
 276                        arr_sz = sa_name_ptr->arr_sz;
 277                        break;
 278                }
 279        }
 280        if (!arr)
 281                return false;
 282
 283        for (k = 0; k < arr_sz; ++k, ++arr) {
 284                if (service_action == arr->value)
 285                        break;
 286        }
 287        if (k < arr_sz)
 288                *sa_name = arr->name;
 289
 290        return true;
 291}
 292
 293struct error_info {
 294        unsigned short code12;  /* 0x0302 looks better than 0x03,0x02 */
 295        unsigned short size;
 296};
 297
 298/*
 299 * There are 700+ entries in this table. To save space, we don't store
 300 * (code, pointer) pairs, which would make sizeof(struct
 301 * error_info)==16 on 64 bits. Rather, the second element just stores
 302 * the size (including \0) of the corresponding string, and we use the
 303 * sum of these to get the appropriate offset into additional_text
 304 * defined below. This approach saves 12 bytes per entry.
 305 */
 306static const struct error_info additional[] =
 307{
 308#define SENSE_CODE(c, s) {c, sizeof(s)},
 309#include "sense_codes.h"
 310#undef SENSE_CODE
 311};
 312
 313static const char *additional_text =
 314#define SENSE_CODE(c, s) s "\0"
 315#include "sense_codes.h"
 316#undef SENSE_CODE
 317        ;
 318
 319struct error_info2 {
 320        unsigned char code1, code2_min, code2_max;
 321        const char * str;
 322        const char * fmt;
 323};
 324
 325static const struct error_info2 additional2[] =
 326{
 327        {0x40, 0x00, 0x7f, "Ram failure", ""},
 328        {0x40, 0x80, 0xff, "Diagnostic failure on component", ""},
 329        {0x41, 0x00, 0xff, "Data path failure", ""},
 330        {0x42, 0x00, 0xff, "Power-on or self-test failure", ""},
 331        {0x4D, 0x00, 0xff, "Tagged overlapped commands", "task tag "},
 332        {0x70, 0x00, 0xff, "Decompression exception", "short algorithm id of "},
 333        {0, 0, 0, NULL, NULL}
 334};
 335
 336/* description of the sense key values */
 337static const char * const snstext[] = {
 338        "No Sense",         /* 0: There is no sense information */
 339        "Recovered Error",  /* 1: The last command completed successfully
 340                                  but used error correction */
 341        "Not Ready",        /* 2: The addressed target is not ready */
 342        "Medium Error",     /* 3: Data error detected on the medium */
 343        "Hardware Error",   /* 4: Controller or device failure */
 344        "Illegal Request",  /* 5: Error in request */
 345        "Unit Attention",   /* 6: Removable medium was changed, or
 346                                  the target has been reset, or ... */
 347        "Data Protect",     /* 7: Access to the data is blocked */
 348        "Blank Check",      /* 8: Reached unexpected written or unwritten
 349                                  region of the medium */
 350        "Vendor Specific(9)",
 351        "Copy Aborted",     /* A: COPY or COMPARE was aborted */
 352        "Aborted Command",  /* B: The target aborted the command */
 353        "Equal",            /* C: A SEARCH DATA command found data equal,
 354                                  reserved in SPC-4 rev 36 */
 355        "Volume Overflow",  /* D: Medium full with still data to be written */
 356        "Miscompare",       /* E: Source data and data on the medium
 357                                  do not agree */
 358        "Completed",        /* F: command completed sense data reported,
 359                                  may occur for successful command */
 360};
 361
 362/* Get sense key string or NULL if not available */
 363const char *
 364scsi_sense_key_string(unsigned char key)
 365{
 366        if (key < ARRAY_SIZE(snstext))
 367                return snstext[key];
 368        return NULL;
 369}
 370EXPORT_SYMBOL(scsi_sense_key_string);
 371
 372/*
 373 * Get additional sense code string or NULL if not available.
 374 * This string may contain a "%x" and should be printed with ascq as arg.
 375 */
 376const char *
 377scsi_extd_sense_format(unsigned char asc, unsigned char ascq, const char **fmt)
 378{
 379        int i;
 380        unsigned short code = ((asc << 8) | ascq);
 381        unsigned offset = 0;
 382
 383        *fmt = NULL;
 384        for (i = 0; i < ARRAY_SIZE(additional); i++) {
 385                if (additional[i].code12 == code)
 386                        return additional_text + offset;
 387                offset += additional[i].size;
 388        }
 389        for (i = 0; additional2[i].fmt; i++) {
 390                if (additional2[i].code1 == asc &&
 391                    ascq >= additional2[i].code2_min &&
 392                    ascq <= additional2[i].code2_max) {
 393                        *fmt = additional2[i].fmt;
 394                        return additional2[i].str;
 395                }
 396        }
 397        return NULL;
 398}
 399EXPORT_SYMBOL(scsi_extd_sense_format);
 400
 401static const char * const hostbyte_table[]={
 402"DID_OK", "DID_NO_CONNECT", "DID_BUS_BUSY", "DID_TIME_OUT", "DID_BAD_TARGET",
 403"DID_ABORT", "DID_PARITY", "DID_ERROR", "DID_RESET", "DID_BAD_INTR",
 404"DID_PASSTHROUGH", "DID_SOFT_ERROR", "DID_IMM_RETRY", "DID_REQUEUE",
 405"DID_TRANSPORT_DISRUPTED", "DID_TRANSPORT_FAILFAST", "DID_TARGET_FAILURE",
 406"DID_NEXUS_FAILURE" };
 407
 408static const char * const driverbyte_table[]={
 409"DRIVER_OK", "DRIVER_BUSY", "DRIVER_SOFT",  "DRIVER_MEDIA", "DRIVER_ERROR",
 410"DRIVER_INVALID", "DRIVER_TIMEOUT", "DRIVER_HARD", "DRIVER_SENSE"};
 411
 412const char *scsi_hostbyte_string(int result)
 413{
 414        const char *hb_string = NULL;
 415        int hb = host_byte(result);
 416
 417        if (hb < ARRAY_SIZE(hostbyte_table))
 418                hb_string = hostbyte_table[hb];
 419        return hb_string;
 420}
 421EXPORT_SYMBOL(scsi_hostbyte_string);
 422
 423const char *scsi_driverbyte_string(int result)
 424{
 425        const char *db_string = NULL;
 426        int db = driver_byte(result);
 427
 428        if (db < ARRAY_SIZE(driverbyte_table))
 429                db_string = driverbyte_table[db];
 430        return db_string;
 431}
 432EXPORT_SYMBOL(scsi_driverbyte_string);
 433
 434#define scsi_mlreturn_name(result)      { result, #result }
 435static const struct value_name_pair scsi_mlreturn_arr[] = {
 436        scsi_mlreturn_name(NEEDS_RETRY),
 437        scsi_mlreturn_name(SUCCESS),
 438        scsi_mlreturn_name(FAILED),
 439        scsi_mlreturn_name(QUEUED),
 440        scsi_mlreturn_name(SOFT_ERROR),
 441        scsi_mlreturn_name(ADD_TO_MLQUEUE),
 442        scsi_mlreturn_name(TIMEOUT_ERROR),
 443        scsi_mlreturn_name(SCSI_RETURN_NOT_HANDLED),
 444        scsi_mlreturn_name(FAST_IO_FAIL)
 445};
 446
 447const char *scsi_mlreturn_string(int result)
 448{
 449        const struct value_name_pair *arr = scsi_mlreturn_arr;
 450        int k;
 451
 452        for (k = 0; k < ARRAY_SIZE(scsi_mlreturn_arr); ++k, ++arr) {
 453                if (result == arr->value)
 454                        return arr->name;
 455        }
 456        return NULL;
 457}
 458EXPORT_SYMBOL(scsi_mlreturn_string);
 459