tools/lib/traceevent/plugin_scsi.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <stdio.h>
   3 #include <string.h>
   4 #include <inttypes.h>
   5 #include "event-parse.h"
   6
   7 typedef unsigned long sector_t;
   8 typedef uint64_t u64;
   9 typedef unsigned int u32;
  10
  11 /*
  12  *      SCSI opcodes
  13  */
  14 #define TEST_UNIT_READY                 0x00
  15 #define REZERO_UNIT                     0x01
  16 #define REQUEST_SENSE                   0x03
  17 #define FORMAT_UNIT                     0x04
  18 #define READ_BLOCK_LIMITS               0x05
  19 #define REASSIGN_BLOCKS                 0x07
  20 #define INITIALIZE_ELEMENT_STATUS       0x07
  21 #define READ_6                          0x08
  22 #define WRITE_6                         0x0a
  23 #define SEEK_6                          0x0b
  24 #define READ_REVERSE                    0x0f
  25 #define WRITE_FILEMARKS                 0x10
  26 #define SPACE                           0x11
  27 #define INQUIRY                         0x12
  28 #define RECOVER_BUFFERED_DATA           0x14
  29 #define MODE_SELECT                     0x15
  30 #define RESERVE                         0x16
  31 #define RELEASE                         0x17
  32 #define COPY                            0x18
  33 #define ERASE                           0x19
  34 #define MODE_SENSE                      0x1a
  35 #define START_STOP                      0x1b
  36 #define RECEIVE_DIAGNOSTIC              0x1c
  37 #define SEND_DIAGNOSTIC                 0x1d
  38 #define ALLOW_MEDIUM_REMOVAL            0x1e
  39
  40 #define READ_FORMAT_CAPACITIES          0x23
  41 #define SET_WINDOW                      0x24
  42 #define READ_CAPACITY                   0x25
  43 #define READ_10                         0x28
  44 #define WRITE_10                        0x2a
  45 #define SEEK_10                         0x2b
  46 #define POSITION_TO_ELEMENT             0x2b
  47 #define WRITE_VERIFY                    0x2e
  48 #define VERIFY                          0x2f
  49 #define SEARCH_HIGH                     0x30
  50 #define SEARCH_EQUAL                    0x31
  51 #define SEARCH_LOW                      0x32
  52 #define SET_LIMITS                      0x33
  53 #define PRE_FETCH                       0x34
  54 #define READ_POSITION                   0x34
  55 #define SYNCHRONIZE_CACHE               0x35
  56 #define LOCK_UNLOCK_CACHE               0x36
  57 #define READ_DEFECT_DATA                0x37
  58 #define MEDIUM_SCAN                     0x38
  59 #define COMPARE                         0x39
  60 #define COPY_VERIFY                     0x3a
  61 #define WRITE_BUFFER                    0x3b
  62 #define READ_BUFFER                     0x3c
  63 #define UPDATE_BLOCK                    0x3d
  64 #define READ_LONG                       0x3e
  65 #define WRITE_LONG                      0x3f
  66 #define CHANGE_DEFINITION               0x40
  67 #define WRITE_SAME                      0x41
  68 #define UNMAP                           0x42
  69 #define READ_TOC                        0x43
  70 #define READ_HEADER                     0x44
  71 #define GET_EVENT_STATUS_NOTIFICATION   0x4a
  72 #define LOG_SELECT                      0x4c
  73 #define LOG_SENSE                       0x4d
  74 #define XDWRITEREAD_10                  0x53
  75 #define MODE_SELECT_10                  0x55
  76 #define RESERVE_10                      0x56
  77 #define RELEASE_10                      0x57
  78 #define MODE_SENSE_10                   0x5a
  79 #define PERSISTENT_RESERVE_IN           0x5e
  80 #define PERSISTENT_RESERVE_OUT          0x5f
  81 #define VARIABLE_LENGTH_CMD             0x7f
  82 #define REPORT_LUNS                     0xa0
  83 #define SECURITY_PROTOCOL_IN            0xa2
  84 #define MAINTENANCE_IN                  0xa3
  85 #define MAINTENANCE_OUT                 0xa4
  86 #define MOVE_MEDIUM                     0xa5
  87 #define EXCHANGE_MEDIUM                 0xa6
  88 #define READ_12                         0xa8
  89 #define SERVICE_ACTION_OUT_12           0xa9
  90 #define WRITE_12                        0xaa
  91 #define SERVICE_ACTION_IN_12            0xab
  92 #define WRITE_VERIFY_12                 0xae
  93 #define VERIFY_12                       0xaf
  94 #define SEARCH_HIGH_12                  0xb0
  95 #define SEARCH_EQUAL_12                 0xb1
  96 #define SEARCH_LOW_12                   0xb2
  97 #define SECURITY_PROTOCOL_OUT           0xb5
  98 #define READ_ELEMENT_STATUS             0xb8
  99 #define SEND_VOLUME_TAG                 0xb6
 100 #define WRITE_LONG_2                    0xea
 101 #define EXTENDED_COPY                   0x83
 102 #define RECEIVE_COPY_RESULTS            0x84
 103 #define ACCESS_CONTROL_IN               0x86
 104 #define ACCESS_CONTROL_OUT              0x87
 105 #define READ_16                         0x88
 106 #define WRITE_16                        0x8a
 107 #define READ_ATTRIBUTE                  0x8c
 108 #define WRITE_ATTRIBUTE                 0x8d
 109 #define VERIFY_16                       0x8f
 110 #define SYNCHRONIZE_CACHE_16            0x91
 111 #define WRITE_SAME_16                   0x93
 112 #define SERVICE_ACTION_BIDIRECTIONAL    0x9d
 113 #define SERVICE_ACTION_IN_16            0x9e
 114 #define SERVICE_ACTION_OUT_16           0x9f
 115 /* values for service action in */
 116 #define SAI_READ_CAPACITY_16            0x10
 117 #define SAI_GET_LBA_STATUS              0x12
 118 /* values for VARIABLE_LENGTH_CMD service action codes
 119  * see spc4r17 Section D.3.5, table D.7 and D.8 */
 120 #define VLC_SA_RECEIVE_CREDENTIAL       0x1800
 121 /* values for maintenance in */
 122 #define MI_REPORT_IDENTIFYING_INFORMATION               0x05
 123 #define MI_REPORT_TARGET_PGS                            0x0a
 124 #define MI_REPORT_ALIASES                               0x0b
 125 #define MI_REPORT_SUPPORTED_OPERATION_CODES             0x0c
 126 #define MI_REPORT_SUPPORTED_TASK_MANAGEMENT_FUNCTIONS   0x0d
 127 #define MI_REPORT_PRIORITY                              0x0e
 128 #define MI_REPORT_TIMESTAMP                             0x0f
 129 #define MI_MANAGEMENT_PROTOCOL_IN                       0x10
 130 /* value for MI_REPORT_TARGET_PGS ext header */
 131 #define MI_EXT_HDR_PARAM_FMT            0x20
 132 /* values for maintenance out */
 133 #define MO_SET_IDENTIFYING_INFORMATION  0x06
 134 #define MO_SET_TARGET_PGS               0x0a
 135 #define MO_CHANGE_ALIASES               0x0b
 136 #define MO_SET_PRIORITY                 0x0e
 137 #define MO_SET_TIMESTAMP                0x0f
 138 #define MO_MANAGEMENT_PROTOCOL_OUT      0x10
 139 /* values for variable length command */
 140 #define XDREAD_32                       0x03
 141 #define XDWRITE_32                      0x04
 142 #define XPWRITE_32                      0x06
 143 #define XDWRITEREAD_32                  0x07
 144 #define READ_32                         0x09
 145 #define VERIFY_32                       0x0a
 146 #define WRITE_32                        0x0b
 147 #define WRITE_SAME_32                   0x0d
 148
 149 #define SERVICE_ACTION16(cdb) (cdb[1] & 0x1f)
 150 #define SERVICE_ACTION32(cdb) ((cdb[8] << 8) | cdb[9])
 151
 152 static const char *
 153 scsi_trace_misc(struct trace_seq *, unsigned char *, int);
 154
 155 static const char *
 156 scsi_trace_rw6(struct trace_seq *p, unsigned char *cdb, int len)
 157 {
 158         const char *ret = p->buffer + p->len;
 159         sector_t lba = 0, txlen = 0;
 160
 161         lba |= ((cdb[1] & 0x1F) << 16);
 162         lba |=  (cdb[2] << 8);
 163         lba |=   cdb[3];
 164         txlen = cdb[4];
 165
 166         trace_seq_printf(p, "lba=%llu txlen=%llu",
 167                          (unsigned long long)lba, (unsigned long long)txlen);
 168         trace_seq_putc(p, 0);
 169         return ret;
 170 }
 171
 172 static const char *
 173 scsi_trace_rw10(struct trace_seq *p, unsigned char *cdb, int len)
 174 {
 175         const char *ret = p->buffer + p->len;
 176         sector_t lba = 0, txlen = 0;
 177
 178         lba |= (cdb[2] << 24);
 179         lba |= (cdb[3] << 16);
 180         lba |= (cdb[4] << 8);
 181         lba |=  cdb[5];
 182         txlen |= (cdb[7] << 8);
 183         txlen |=  cdb[8];
 184
 185         trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u",
 186                          (unsigned long long)lba, (unsigned long long)txlen,
 187                          cdb[1] >> 5);
 188
 189         if (cdb[0] == WRITE_SAME)
 190                 trace_seq_printf(p, " unmap=%u", cdb[1] >> 3 & 1);
 191
 192         trace_seq_putc(p, 0);
 193         return ret;
 194 }
 195
 196 static const char *
 197 scsi_trace_rw12(struct trace_seq *p, unsigned char *cdb, int len)
 198 {
 199         const char *ret = p->buffer + p->len;
 200         sector_t lba = 0, txlen = 0;
 201
 202         lba |= (cdb[2] << 24);
 203         lba |= (cdb[3] << 16);
 204         lba |= (cdb[4] << 8);
 205         lba |=  cdb[5];
 206         txlen |= (cdb[6] << 24);
 207         txlen |= (cdb[7] << 16);
 208         txlen |= (cdb[8] << 8);
 209         txlen |=  cdb[9];
 210
 211         trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u",
 212                          (unsigned long long)lba, (unsigned long long)txlen,
 213                          cdb[1] >> 5);
 214         trace_seq_putc(p, 0);
 215         return ret;
 216 }
 217
 218 static const char *
 219 scsi_trace_rw16(struct trace_seq *p, unsigned char *cdb, int len)
 220 {
 221         const char *ret = p->buffer + p->len;
 222         sector_t lba = 0, txlen = 0;
 223
 224         lba |= ((u64)cdb[2] << 56);
 225         lba |= ((u64)cdb[3] << 48);
 226         lba |= ((u64)cdb[4] << 40);
 227         lba |= ((u64)cdb[5] << 32);
 228         lba |= (cdb[6] << 24);
 229         lba |= (cdb[7] << 16);
 230         lba |= (cdb[8] << 8);
 231         lba |=  cdb[9];
 232         txlen |= (cdb[10] << 24);
 233         txlen |= (cdb[11] << 16);
 234         txlen |= (cdb[12] << 8);
 235         txlen |=  cdb[13];
 236
 237         trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u",
 238                          (unsigned long long)lba, (unsigned long long)txlen,
 239                          cdb[1] >> 5);
 240
 241         if (cdb[0] == WRITE_SAME_16)
 242                 trace_seq_printf(p, " unmap=%u", cdb[1] >> 3 & 1);
 243
 244         trace_seq_putc(p, 0);
 245         return ret;
 246 }
 247
 248 static const char *
 249 scsi_trace_rw32(struct trace_seq *p, unsigned char *cdb, int len)
 250 {
 251         const char *ret = p->buffer + p->len, *cmd;
 252         sector_t lba = 0, txlen = 0;
 253         u32 ei_lbrt = 0;
 254
 255         switch (SERVICE_ACTION32(cdb)) {
 256         case READ_32:
 257                 cmd = "READ";
 258                 break;
 259         case VERIFY_32:
 260                 cmd = "VERIFY";
 261                 break;
 262         case WRITE_32:
 263                 cmd = "WRITE";
 264                 break;
 265         case WRITE_SAME_32:
 266                 cmd = "WRITE_SAME";
 267                 break;
 268         default:
 269                 trace_seq_printf(p, "UNKNOWN");
 270                 goto out;
 271         }
 272
 273         lba |= ((u64)cdb[12] << 56);
 274         lba |= ((u64)cdb[13] << 48);
 275         lba |= ((u64)cdb[14] << 40);
 276         lba |= ((u64)cdb[15] << 32);
 277         lba |= (cdb[16] << 24);
 278         lba |= (cdb[17] << 16);
 279         lba |= (cdb[18] << 8);
 280         lba |=  cdb[19];
 281         ei_lbrt |= (cdb[20] << 24);
 282         ei_lbrt |= (cdb[21] << 16);
 283         ei_lbrt |= (cdb[22] << 8);
 284         ei_lbrt |=  cdb[23];
 285         txlen |= (cdb[28] << 24);
 286         txlen |= (cdb[29] << 16);
 287         txlen |= (cdb[30] << 8);
 288         txlen |=  cdb[31];
 289
 290         trace_seq_printf(p, "%s_32 lba=%llu txlen=%llu protect=%u ei_lbrt=%u",
 291                          cmd, (unsigned long long)lba,
 292                          (unsigned long long)txlen, cdb[10] >> 5, ei_lbrt);
 293
 294         if (SERVICE_ACTION32(cdb) == WRITE_SAME_32)
 295                 trace_seq_printf(p, " unmap=%u", cdb[10] >> 3 & 1);
 296
 297 out:
 298         trace_seq_putc(p, 0);
 299         return ret;
 300 }
 301
 302 static const char *
 303 scsi_trace_unmap(struct trace_seq *p, unsigned char *cdb, int len)
 304 {
 305         const char *ret = p->buffer + p->len;
 306         unsigned int regions = cdb[7] << 8 | cdb[8];
 307
 308         trace_seq_printf(p, "regions=%u", (regions - 8) / 16);
 309         trace_seq_putc(p, 0);
 310         return ret;
 311 }
 312
 313 static const char *
 314 scsi_trace_service_action_in(struct trace_seq *p, unsigned char *cdb, int len)
 315 {
 316         const char *ret = p->buffer + p->len, *cmd;
 317         sector_t lba = 0;
 318         u32 alloc_len = 0;
 319
 320         switch (SERVICE_ACTION16(cdb)) {
 321         case SAI_READ_CAPACITY_16:
 322                 cmd = "READ_CAPACITY_16";
 323                 break;
 324         case SAI_GET_LBA_STATUS:
 325                 cmd = "GET_LBA_STATUS";
 326                 break;
 327         default:
 328                 trace_seq_printf(p, "UNKNOWN");
 329                 goto out;
 330         }
 331
 332         lba |= ((u64)cdb[2] << 56);
 333         lba |= ((u64)cdb[3] << 48);
 334         lba |= ((u64)cdb[4] << 40);
 335         lba |= ((u64)cdb[5] << 32);
 336         lba |= (cdb[6] << 24);
 337         lba |= (cdb[7] << 16);
 338         lba |= (cdb[8] << 8);
 339         lba |=  cdb[9];
 340         alloc_len |= (cdb[10] << 24);
 341         alloc_len |= (cdb[11] << 16);
 342         alloc_len |= (cdb[12] << 8);
 343         alloc_len |=  cdb[13];
 344
 345         trace_seq_printf(p, "%s lba=%llu alloc_len=%u", cmd,
 346                          (unsigned long long)lba, alloc_len);
 347
 348 out:
 349         trace_seq_putc(p, 0);
 350         return ret;
 351 }
 352
 353 static const char *
 354 scsi_trace_varlen(struct trace_seq *p, unsigned char *cdb, int len)
 355 {
 356         switch (SERVICE_ACTION32(cdb)) {
 357         case READ_32:
 358         case VERIFY_32:
 359         case WRITE_32:
 360         case WRITE_SAME_32:
 361                 return scsi_trace_rw32(p, cdb, len);
 362         default:
 363                 return scsi_trace_misc(p, cdb, len);
 364         }
 365 }
 366
 367 static const char *
 368 scsi_trace_misc(struct trace_seq *p, unsigned char *cdb, int len)
 369 {
 370         const char *ret = p->buffer + p->len;
 371
 372         trace_seq_printf(p, "-");
 373         trace_seq_putc(p, 0);
 374         return ret;
 375 }
 376
 377 const char *
 378 scsi_trace_parse_cdb(struct trace_seq *p, unsigned char *cdb, int len)
 379 {
 380         switch (cdb[0]) {
 381         case READ_6:
 382         case WRITE_6:
 383                 return scsi_trace_rw6(p, cdb, len);
 384         case READ_10:
 385         case VERIFY:
 386         case WRITE_10:
 387         case WRITE_SAME:
 388                 return scsi_trace_rw10(p, cdb, len);
 389         case READ_12:
 390         case VERIFY_12:
 391         case WRITE_12:
 392                 return scsi_trace_rw12(p, cdb, len);
 393         case READ_16:
 394         case VERIFY_16:
 395         case WRITE_16:
 396         case WRITE_SAME_16:
 397                 return scsi_trace_rw16(p, cdb, len);
 398         case UNMAP:
 399                 return scsi_trace_unmap(p, cdb, len);
 400         case SERVICE_ACTION_IN_16:
 401                 return scsi_trace_service_action_in(p, cdb, len);
 402         case VARIABLE_LENGTH_CMD:
 403                 return scsi_trace_varlen(p, cdb, len);
 404         default:
 405                 return scsi_trace_misc(p, cdb, len);
 406         }
 407 }
 408
 409 unsigned long long process_scsi_trace_parse_cdb(struct trace_seq *s,
 410                                                 unsigned long long *args)
 411 {
 412         scsi_trace_parse_cdb(s, (unsigned char *) (unsigned long) args[1], args[2]);
 413         return 0;
 414 }
 415
 416 int PEVENT_PLUGIN_LOADER(struct pevent *pevent)
 417 {
 418         pevent_register_print_function(pevent,
 419                                        process_scsi_trace_parse_cdb,
 420                                        PEVENT_FUNC_ARG_STRING,
 421                                        "scsi_trace_parse_cdb",
 422                                        PEVENT_FUNC_ARG_PTR,
 423                                        PEVENT_FUNC_ARG_PTR,
 424                                        PEVENT_FUNC_ARG_INT,
 425                                        PEVENT_FUNC_ARG_VOID);
 426         return 0;
 427 }
 428
 429 void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent)
 430 {
 431         pevent_unregister_print_function(pevent, process_scsi_trace_parse_cdb,
 432                                          "scsi_trace_parse_cdb");
 433 }