atacmds.h

   1 /*
   2  * atacmds.h
   3  *
   4  * Home page of code is: http://smartmontools.sourceforge.net
   5  *
   6  * Copyright (C) 2002-9 Bruce Allen <smartmontools-support@lists.sourceforge.net>
   7  * Copyright (C) 2008-9 Christian Franke <smartmontools-support@lists.sourceforge.net>
   8  * Copyright (C) 1999-2000 Michael Cornwell <cornwell@acm.org>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2, or (at your option)
  13  * any later version.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * (for example COPYING); if not, write to the Free
  17  * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18  *
  19  * This code was originally developed as a Senior Thesis by Michael Cornwell
  20  * at the Concurrent Systems Laboratory (now part of the Storage Systems
  21  * Research Center), Jack Baskin School of Engineering, University of
  22  * California, Santa Cruz. http://ssrc.soe.ucsc.edu/
  23  *
  24  */
  25
  26 #ifndef ATACMDS_H_
  27 #define ATACMDS_H_
  28
  29 #define ATACMDS_H_CVSID "$Id: atacmds.h 3020 2009-12-31 01:11:51Z dlukes $"
  30
  31 #include "dev_interface.h" // ata_device
  32
  33 // Macro to check expected size of struct at compile time using a
  34 // dummy typedef.  On size mismatch, compiler reports a negative array
  35 // size.  If you see an error message of this form, it means that the
  36 // #pragma pack(1) pragma below is not having the desired effect on
  37 // your compiler.
  38 #define ASSERT_SIZEOF_STRUCT(s, n) \
  39   typedef char assert_sizeof_struct_##s[(sizeof(struct s) == (n)) ? 1 : -1]
  40
  41 // Add __attribute__((packed)) if compiler supports it
  42 // because some gcc versions (at least ARM) lack support of #pragma pack()
  43 #ifdef HAVE_ATTR_PACKED
  44 #define ATTR_PACKED __attribute__((packed))
  45 #else
  46 #define ATTR_PACKED
  47 #endif
  48
  49 typedef enum {
  50   // returns no data, just succeeds or fails
  51   ENABLE,
  52   DISABLE,
  53   AUTOSAVE,
  54   IMMEDIATE_OFFLINE,
  55   AUTO_OFFLINE,
  56   STATUS,       // just says if SMART is working or not
  57   STATUS_CHECK, // says if disk's SMART status is healthy, or failing
  58   // return 512 bytes of data:
  59   READ_VALUES,
  60   READ_THRESHOLDS,
  61   READ_LOG,
  62   IDENTIFY,
  63   PIDENTIFY,
  64   // returns 1 byte of data
  65   CHECK_POWER_MODE,
  66   // writes 512 bytes of data:
  67   WRITE_LOG
  68 } smart_command_set;
  69
  70 // Possible values for fix_firmwarebug.
  71 enum {
  72   FIX_NOTSPECIFIED = 0,
  73   FIX_NONE,
  74   FIX_SAMSUNG,
  75   FIX_SAMSUNG2,
  76   FIX_SAMSUNG3
  77 };
  78
  79 // ATA Specification Command Register Values (Commands)
  80 #define ATA_IDENTIFY_DEVICE             0xec
  81 #define ATA_IDENTIFY_PACKET_DEVICE      0xa1
  82 #define ATA_SMART_CMD                   0xb0
  83 #define ATA_CHECK_POWER_MODE            0xe5
  84 // 48-bit commands
  85 #define ATA_READ_LOG_EXT                0x2F
  86
  87 // ATA Specification Feature Register Values (SMART Subcommands).
  88 // Note that some are obsolete as of ATA-7.
  89 #define ATA_SMART_READ_VALUES           0xd0
  90 #define ATA_SMART_READ_THRESHOLDS       0xd1
  91 #define ATA_SMART_AUTOSAVE              0xd2
  92 #define ATA_SMART_SAVE                  0xd3
  93 #define ATA_SMART_IMMEDIATE_OFFLINE     0xd4
  94 #define ATA_SMART_READ_LOG_SECTOR       0xd5
  95 #define ATA_SMART_WRITE_LOG_SECTOR      0xd6
  96 #define ATA_SMART_WRITE_THRESHOLDS      0xd7
  97 #define ATA_SMART_ENABLE                0xd8
  98 #define ATA_SMART_DISABLE               0xd9
  99 #define ATA_SMART_STATUS                0xda
 100 // SFF 8035i Revision 2 Specification Feature Register Value (SMART
 101 // Subcommand)
 102 #define ATA_SMART_AUTO_OFFLINE          0xdb
 103
 104 // Sector Number values for ATA_SMART_IMMEDIATE_OFFLINE Subcommand
 105 #define OFFLINE_FULL_SCAN               0
 106 #define SHORT_SELF_TEST                 1
 107 #define EXTEND_SELF_TEST                2
 108 #define CONVEYANCE_SELF_TEST            3
 109 #define SELECTIVE_SELF_TEST             4
 110 #define ABORT_SELF_TEST                 127
 111 #define SHORT_CAPTIVE_SELF_TEST         129
 112 #define EXTEND_CAPTIVE_SELF_TEST        130
 113 #define CONVEYANCE_CAPTIVE_SELF_TEST    131
 114 #define SELECTIVE_CAPTIVE_SELF_TEST     132
 115 #define CAPTIVE_MASK                    (0x01<<7)
 116
 117 // Maximum allowed number of SMART Attributes
 118 #define NUMBER_ATA_SMART_ATTRIBUTES     30
 119
 120 // Needed parts of the ATA DRIVE IDENTIFY Structure. Those labeled
 121 // word* are NOT used.
 122 #pragma pack(1)
 123 struct ata_identify_device {
 124   unsigned short words000_009[10];
 125   unsigned char  serial_no[20];
 126   unsigned short words020_022[3];
 127   unsigned char  fw_rev[8];
 128   unsigned char  model[40];
 129   unsigned short words047_079[33];
 130   unsigned short major_rev_num;
 131   unsigned short minor_rev_num;
 132   unsigned short command_set_1;
 133   unsigned short command_set_2;
 134   unsigned short command_set_extension;
 135   unsigned short cfs_enable_1;
 136   unsigned short word086;
 137   unsigned short csf_default;
 138   unsigned short words088_255[168];
 139 } ATTR_PACKED;
 140 #pragma pack()
 141 ASSERT_SIZEOF_STRUCT(ata_identify_device, 512);
 142
 143 /* ata_smart_attribute is the vendor specific in SFF-8035 spec */
 144 #pragma pack(1)
 145 struct ata_smart_attribute {
 146   unsigned char id;
 147   // meaning of flag bits: see MACROS just below
 148   // WARNING: MISALIGNED!
 149   unsigned short flags;
 150   unsigned char current;
 151   unsigned char worst;
 152   unsigned char raw[6];
 153   unsigned char reserv;
 154 } ATTR_PACKED;
 155 #pragma pack()
 156 ASSERT_SIZEOF_STRUCT(ata_smart_attribute, 12);
 157
 158 // MACROS to interpret the flags bits in the previous structure.
 159 // These have not been implemented using bitflags and a union, to make
 160 // it portable across bit/little endian and different platforms.
 161
 162 // 0: Prefailure bit
 163
 164 // From SFF 8035i Revision 2 page 19: Bit 0 (pre-failure/advisory bit)
 165 // - If the value of this bit equals zero, an attribute value less
 166 // than or equal to its corresponding attribute threshold indicates an
 167 // advisory condition where the usage or age of the device has
 168 // exceeded its intended design life period. If the value of this bit
 169 // equals one, an attribute value less than or equal to its
 170 // corresponding attribute threshold indicates a prefailure condition
 171 // where imminent loss of data is being predicted.
 172 #define ATTRIBUTE_FLAGS_PREFAILURE(x) (x & 0x01)
 173
 174 // 1: Online bit
 175
 176 //  From SFF 8035i Revision 2 page 19: Bit 1 (on-line data collection
 177 // bit) - If the value of this bit equals zero, then the attribute
 178 // value is updated only during off-line data collection
 179 // activities. If the value of this bit equals one, then the attribute
 180 // value is updated during normal operation of the device or during
 181 // both normal operation and off-line testing.
 182 #define ATTRIBUTE_FLAGS_ONLINE(x) (x & 0x02)
 183
 184
 185 // The following are (probably) IBM's, Maxtors and  Quantum's definitions for the
 186 // vendor-specific bits:
 187 // 2: Performance type bit
 188 #define ATTRIBUTE_FLAGS_PERFORMANCE(x) (x & 0x04)
 189
 190 // 3: Errorrate type bit
 191 #define ATTRIBUTE_FLAGS_ERRORRATE(x) (x & 0x08)
 192
 193 // 4: Eventcount bit
 194 #define ATTRIBUTE_FLAGS_EVENTCOUNT(x) (x & 0x10)
 195
 196 // 5: Selfpereserving bit
 197 #define ATTRIBUTE_FLAGS_SELFPRESERVING(x) (x & 0x20)
 198
 199
 200 // Last ten bits are reserved for future use
 201
 202 /* ata_smart_values is format of the read drive Attribute command */
 203 /* see Table 34 of T13/1321D Rev 1 spec (Device SMART data structure) for *some* info */
 204 #pragma pack(1)
 205 struct ata_smart_values {
 206   unsigned short int revnumber;
 207   struct ata_smart_attribute vendor_attributes [NUMBER_ATA_SMART_ATTRIBUTES];
 208   unsigned char offline_data_collection_status;
 209   unsigned char self_test_exec_status;  //IBM # segments for offline collection
 210   unsigned short int total_time_to_complete_off_line; // IBM different
 211   unsigned char vendor_specific_366; // Maxtor & IBM curent segment pointer
 212   unsigned char offline_data_collection_capability;
 213   unsigned short int smart_capability;
 214   unsigned char errorlog_capability;
 215   unsigned char vendor_specific_371;  // Maxtor, IBM: self-test failure checkpoint see below!
 216   unsigned char short_test_completion_time;
 217   unsigned char extend_test_completion_time;
 218   unsigned char conveyance_test_completion_time;
 219   unsigned char reserved_375_385[11];
 220   unsigned char vendor_specific_386_510[125]; // Maxtor bytes 508-509 Attribute/Threshold Revision #
 221   unsigned char chksum;
 222 } ATTR_PACKED;
 223 #pragma pack()
 224 ASSERT_SIZEOF_STRUCT(ata_smart_values, 512);
 225
 226 /* Maxtor, IBM: self-test failure checkpoint byte meaning:
 227  00 - write test
 228  01 - servo basic
 229  02 - servo random
 230  03 - G-list scan
 231  04 - Handling damage
 232  05 - Read scan
 233 */
 234
 235 /* Vendor attribute of SMART Threshold (compare to ata_smart_attribute above) */
 236 #pragma pack(1)
 237 struct ata_smart_threshold_entry {
 238   unsigned char id;
 239   unsigned char threshold;
 240   unsigned char reserved[10];
 241 } ATTR_PACKED;
 242 #pragma pack()
 243 ASSERT_SIZEOF_STRUCT(ata_smart_threshold_entry, 12);
 244
 245 /* Format of Read SMART THreshold Command */
 246 /* Compare to ata_smart_values above */
 247 #pragma pack(1)
 248 struct ata_smart_thresholds_pvt {
 249   unsigned short int revnumber;
 250   struct ata_smart_threshold_entry thres_entries[NUMBER_ATA_SMART_ATTRIBUTES];
 251   unsigned char reserved[149];
 252   unsigned char chksum;
 253 } ATTR_PACKED;
 254 #pragma pack()
 255 ASSERT_SIZEOF_STRUCT(ata_smart_thresholds_pvt, 512);
 256
 257
 258 // Table 42 of T13/1321D Rev 1 spec (Error Data Structure)
 259 #pragma pack(1)
 260 struct ata_smart_errorlog_error_struct {
 261   unsigned char reserved;
 262   unsigned char error_register;
 263   unsigned char sector_count;
 264   unsigned char sector_number;
 265   unsigned char cylinder_low;
 266   unsigned char cylinder_high;
 267   unsigned char drive_head;
 268   unsigned char status;
 269   unsigned char extended_error[19];
 270   unsigned char state;
 271   unsigned short timestamp;
 272 } ATTR_PACKED;
 273 #pragma pack()
 274 ASSERT_SIZEOF_STRUCT(ata_smart_errorlog_error_struct, 30);
 275
 276
 277 // Table 41 of T13/1321D Rev 1 spec (Command Data Structure)
 278 #pragma pack(1)
 279 struct ata_smart_errorlog_command_struct {
 280   unsigned char devicecontrolreg;
 281   unsigned char featuresreg;
 282   unsigned char sector_count;
 283   unsigned char sector_number;
 284   unsigned char cylinder_low;
 285   unsigned char cylinder_high;
 286   unsigned char drive_head;
 287   unsigned char commandreg;
 288   unsigned int timestamp;
 289 } ATTR_PACKED;
 290 #pragma pack()
 291 ASSERT_SIZEOF_STRUCT(ata_smart_errorlog_command_struct, 12);
 292
 293 // Table 40 of T13/1321D Rev 1 spec (Error log data structure)
 294 #pragma pack(1)
 295 struct ata_smart_errorlog_struct {
 296   struct ata_smart_errorlog_command_struct commands[5];
 297   struct ata_smart_errorlog_error_struct error_struct;
 298 } ATTR_PACKED;
 299 #pragma pack()
 300 ASSERT_SIZEOF_STRUCT(ata_smart_errorlog_struct, 90);
 301
 302 // Table 39 of T13/1321D Rev 1 spec (SMART error log sector)
 303 #pragma pack(1)
 304 struct ata_smart_errorlog {
 305   unsigned char revnumber;
 306   unsigned char error_log_pointer;
 307   struct ata_smart_errorlog_struct errorlog_struct[5];
 308   unsigned short int ata_error_count;
 309   unsigned char reserved[57];
 310   unsigned char checksum;
 311 } ATTR_PACKED;
 312 #pragma pack()
 313 ASSERT_SIZEOF_STRUCT(ata_smart_errorlog, 512);
 314
 315
 316 // Extended Comprehensive SMART Error Log data structures
 317 // See Section A.7 of
 318 //   AT Attachment 8 - ATA/ATAPI Command Set (ATA8-ACS)
 319 //   T13/1699-D Revision 6a (Working Draft), September 6, 2008.
 320
 321 // Command data structure
 322 // Table A.9 of T13/1699-D Revision 6a
 323 #pragma pack(1)
 324 struct ata_smart_exterrlog_command
 325 {
 326   unsigned char device_control_register;
 327   unsigned char features_register;
 328   unsigned char features_register_hi;
 329   unsigned char count_register;
 330   unsigned char count_register_hi;
 331   unsigned char lba_low_register;
 332   unsigned char lba_low_register_hi;
 333   unsigned char lba_mid_register;
 334   unsigned char lba_mid_register_hi;
 335   unsigned char lba_high_register;
 336   unsigned char lba_high_register_hi;
 337   unsigned char device_register;
 338   unsigned char command_register;
 339
 340   unsigned char reserved;
 341   unsigned int timestamp;
 342 } ATTR_PACKED;
 343 #pragma pack()
 344 ASSERT_SIZEOF_STRUCT(ata_smart_exterrlog_command, 18);
 345
 346 // Error data structure
 347 // Table A.10 T13/1699-D Revision 6a
 348 #pragma pack(1)
 349 struct ata_smart_exterrlog_error
 350 {
 351   unsigned char device_control_register;
 352   unsigned char error_register;
 353   unsigned char count_register;
 354   unsigned char count_register_hi;
 355   unsigned char lba_low_register;
 356   unsigned char lba_low_register_hi;
 357   unsigned char lba_mid_register;
 358   unsigned char lba_mid_register_hi;
 359   unsigned char lba_high_register;
 360   unsigned char lba_high_register_hi;
 361   unsigned char device_register;
 362   unsigned char status_register;
 363
 364   unsigned char extended_error[19];
 365   unsigned char state;
 366   unsigned short timestamp;
 367 } ATTR_PACKED;
 368 #pragma pack()
 369 ASSERT_SIZEOF_STRUCT(ata_smart_exterrlog_error, 34);
 370
 371 // Error log data structure
 372 // Table A.8 of T13/1699-D Revision 6a
 373 #pragma pack(1)
 374 struct ata_smart_exterrlog_error_log
 375 {
 376   ata_smart_exterrlog_command commands[5];
 377   ata_smart_exterrlog_error error;
 378 } ATTR_PACKED;
 379 #pragma pack()
 380 ASSERT_SIZEOF_STRUCT(ata_smart_exterrlog_error_log, 124);
 381
 382 // Ext. Comprehensive SMART error log
 383 // Table A.7 of T13/1699-D Revision 6a
 384 #pragma pack(1)
 385 struct ata_smart_exterrlog
 386 {
 387   unsigned char version;
 388   unsigned char reserved1;
 389   unsigned short error_log_index;
 390   ata_smart_exterrlog_error_log error_logs[4];
 391   unsigned short device_error_count;
 392   unsigned char reserved2[9];
 393   unsigned char checksum;
 394 } ATTR_PACKED;
 395 #pragma pack()
 396 ASSERT_SIZEOF_STRUCT(ata_smart_exterrlog, 512);
 397
 398
 399 // Table 45 of T13/1321D Rev 1 spec (Self-test log descriptor entry)
 400 #pragma pack(1)
 401 struct ata_smart_selftestlog_struct {
 402   unsigned char selftestnumber; // Sector number register
 403   unsigned char selfteststatus;
 404   unsigned short int timestamp;
 405   unsigned char selftestfailurecheckpoint;
 406   unsigned int lbafirstfailure;
 407   unsigned char vendorspecific[15];
 408 } ATTR_PACKED;
 409 #pragma pack()
 410 ASSERT_SIZEOF_STRUCT(ata_smart_selftestlog_struct, 24);
 411
 412 // Table 44 of T13/1321D Rev 1 spec (Self-test log data structure)
 413 #pragma pack(1)
 414 struct ata_smart_selftestlog {
 415   unsigned short int revnumber;
 416   struct ata_smart_selftestlog_struct selftest_struct[21];
 417   unsigned char vendorspecific[2];
 418   unsigned char mostrecenttest;
 419   unsigned char reserved[2];
 420   unsigned char chksum;
 421 } ATTR_PACKED;
 422 #pragma pack()
 423 ASSERT_SIZEOF_STRUCT(ata_smart_selftestlog, 512);
 424
 425 // Extended SMART Self-test log data structures
 426 // See Section A.8 of
 427 //   AT Attachment 8 - ATA/ATAPI Command Set (ATA8-ACS)
 428 //   T13/1699-D Revision 6a (Working Draft), September 6, 2008.
 429
 430 // Extended Self-test log descriptor entry
 431 // Table A.13 of T13/1699-D Revision 6a
 432 #pragma pack(1)
 433 struct ata_smart_extselftestlog_desc
 434 {
 435   unsigned char self_test_type;
 436   unsigned char self_test_status;
 437   unsigned short timestamp;
 438   unsigned char checkpoint;
 439   unsigned char failing_lba[6];
 440   unsigned char vendorspecific[15];
 441 } ATTR_PACKED;
 442 #pragma pack()
 443 ASSERT_SIZEOF_STRUCT(ata_smart_extselftestlog_desc, 26);
 444
 445 // Extended Self-test log data structure
 446 // Table A.12 of T13/1699-D Revision 6a
 447 #pragma pack(1)
 448 struct ata_smart_extselftestlog
 449 {
 450   unsigned char version;
 451   unsigned char reserved1;
 452   unsigned short log_desc_index;
 453   struct ata_smart_extselftestlog_desc log_descs[19];
 454   unsigned char vendor_specifc[2];
 455   unsigned char reserved2[11];
 456   unsigned char chksum;
 457 } ATTR_PACKED;
 458 #pragma pack()
 459 ASSERT_SIZEOF_STRUCT(ata_smart_extselftestlog, 512);
 460
 461 // SMART LOG DIRECTORY Table 52 of T13/1532D Vol 1 Rev 1a
 462 #pragma pack(1)
 463 struct ata_smart_log_entry {
 464   unsigned char numsectors;
 465   unsigned char reserved;
 466 } ATTR_PACKED;
 467 #pragma pack()
 468 ASSERT_SIZEOF_STRUCT(ata_smart_log_entry, 2);
 469
 470 #pragma pack(1)
 471 struct ata_smart_log_directory {
 472   unsigned short int logversion;
 473   struct ata_smart_log_entry entry[255];
 474 } ATTR_PACKED;
 475 #pragma pack()
 476 ASSERT_SIZEOF_STRUCT(ata_smart_log_directory, 512);
 477
 478 // SMART SELECTIVE SELF-TEST LOG Table 61 of T13/1532D Volume 1
 479 // Revision 3
 480 #pragma pack(1)
 481 struct test_span {
 482   uint64_t start;
 483   uint64_t end;
 484 } ATTR_PACKED;
 485 #pragma pack()
 486 ASSERT_SIZEOF_STRUCT(test_span, 16);
 487
 488 #pragma pack(1)
 489 struct ata_selective_self_test_log {
 490   unsigned short     logversion;
 491   struct test_span   span[5];
 492   unsigned char      reserved1[337-82+1];
 493   unsigned char      vendor_specific1[491-338+1];
 494   uint64_t           currentlba;
 495   unsigned short     currentspan;
 496   unsigned short     flags;
 497   unsigned char      vendor_specific2[507-504+1];
 498   unsigned short     pendingtime;
 499   unsigned char      reserved2;
 500   unsigned char      checksum;
 501 } ATTR_PACKED;
 502 #pragma pack()
 503 ASSERT_SIZEOF_STRUCT(ata_selective_self_test_log, 512);
 504
 505 #define SELECTIVE_FLAG_DOSCAN  (0x0002)
 506 #define SELECTIVE_FLAG_PENDING (0x0008)
 507 #define SELECTIVE_FLAG_ACTIVE  (0x0010)
 508
 509
 510 // SCT (SMART Command Transport) data structures
 511 // See Sections 8.2 and 8.3 of:
 512 //   AT Attachment 8 - ATA/ATAPI Command Set (ATA8-ACS)
 513 //   T13/1699-D Revision 3f (Working Draft), December 11, 2006.
 514
 515 // SCT Status response (read with SMART_READ_LOG page 0xe0)
 516 // Table 60 of T13/1699-D Revision 3f
 517 #pragma pack(1)
 518 struct ata_sct_status_response
 519 {
 520   unsigned short format_version;    // 0-1: Status response format version number (2, 3)
 521   unsigned short sct_version;       // 2-3: Vendor specific version number
 522   unsigned short sct_spec;          // 4-5: SCT level supported (1)
 523   unsigned int status_flags;        // 6-9: Status flags (Bit 0: Segment initialized, Bits 1-31: reserved)
 524   unsigned char device_state;       // 10: Device State (0-5)
 525   unsigned char bytes011_013[3];    // 11-13: reserved
 526   unsigned short ext_status_code;   // 14-15: Status of last SCT command (0xffff if executing)
 527   unsigned short action_code;       // 16-17: Action code of last SCT command
 528   unsigned short function_code;     // 18-19: Function code of last SCT command
 529   unsigned char bytes020_039[20];   // 20-39: reserved
 530   uint64_t lba_current;             // 40-47: LBA of SCT command executing in background
 531   unsigned char bytes048_199[152];  // 48-199: reserved
 532   signed char hda_temp;             // 200: Current temperature in Celsius (0x80 = invalid)
 533   signed char min_temp;             // 201: Minimum temperature this power cycle
 534   signed char max_temp;             // 202: Maximum temperature this power cycle
 535   signed char life_min_temp;        // 203: Minimum lifetime temperature
 536   signed char life_max_temp;        // 204: Maximum lifetime temperature
 537   unsigned char byte205;            // 205: reserved (T13/e06152r0-2: Average lifetime temperature)
 538   unsigned int over_limit_count;    // 206-209: # intervals since last reset with temperature > Max Op Limit
 539   unsigned int under_limit_count;   // 210-213: # intervals since last reset with temperature < Min Op Limit
 540   unsigned char bytes214_479[266];  // 214-479: reserved
 541   unsigned char vendor_specific[32];// 480-511: vendor specific
 542 } ATTR_PACKED;
 543 #pragma pack()
 544 ASSERT_SIZEOF_STRUCT(ata_sct_status_response, 512);
 545
 546 // SCT Feature Control command (send with SMART_WRITE_LOG page 0xe0)
 547 // Table 72 of T13/1699-D Revision 3f
 548 #pragma pack(1)
 549 struct ata_sct_feature_control_command
 550 {
 551   unsigned short action_code;       // 4 = Feature Control
 552   unsigned short function_code;     // 1 = Set, 2 = Return, 3 = Return options
 553   unsigned short feature_code;      // 3 = Temperature logging interval
 554   unsigned short state;             // Interval
 555   unsigned short option_flags;      // Bit 0: persistent, Bits 1-31: reserved
 556   unsigned short words005_255[251]; // reserved
 557 } ATTR_PACKED;
 558 #pragma pack()
 559 ASSERT_SIZEOF_STRUCT(ata_sct_feature_control_command, 512);
 560
 561 // SCT Data Table command (send with SMART_WRITE_LOG page 0xe0)
 562 // Table 73 of T13/1699-D Revision 3f
 563 #pragma pack(1)
 564 struct ata_sct_data_table_command
 565 {
 566   unsigned short action_code;       // 5 = Data Table
 567   unsigned short function_code;     // 1 = Read Table
 568   unsigned short table_id;          // 2 = Temperature History
 569   unsigned short words003_255[253]; // reserved
 570 } ATTR_PACKED;
 571 #pragma pack()
 572 ASSERT_SIZEOF_STRUCT(ata_sct_data_table_command, 512);
 573
 574 // SCT Temperature History Table (read with SMART_READ_LOG page 0xe1)
 575 // Table 75 of T13/1699-D Revision 3f
 576 #pragma pack(1)
 577 struct ata_sct_temperature_history_table
 578 {
 579   unsigned short format_version;    // 0-1: Data table format version number (2)
 580   unsigned short sampling_period;   // 2-3: Temperature sampling period in minutes
 581   unsigned short interval;          // 4-5: Timer interval between history entries
 582   signed char max_op_limit;         // 6: Maximum recommended continuous operating temperature
 583   signed char over_limit;           // 7: Maximum temperature limit
 584   signed char min_op_limit;         // 8: Minimum recommended continuous operating limit
 585   signed char under_limit;          // 9: Minimum temperature limit
 586   unsigned char bytes010_029[20];   // 10-29: reserved
 587   unsigned short cb_size;           // 30-31: Number of history entries (range 128-478)
 588   unsigned short cb_index;          // 32-33: Index of last updated entry (zero-based)
 589   signed char cb[478];              // 34-(34+cb_size-1): Circular buffer of temperature values
 590 } ATTR_PACKED;
 591 #pragma pack()
 592 ASSERT_SIZEOF_STRUCT(ata_sct_temperature_history_table, 512);
 593
 594 // Possible values for span_args.mode
 595 enum {
 596   SEL_RANGE, // MIN-MAX
 597   SEL_REDO,  // redo this
 598   SEL_NEXT,  // do next range
 599   SEL_CONT   // redo or next depending of last test status
 600 };
 601
 602 // Arguments for selective self-test
 603 struct ata_selective_selftest_args
 604 {
 605   // Arguments for each span
 606   struct span_args
 607   {
 608     uint64_t start;   // First block
 609     uint64_t end;     // Last block
 610     int mode;         // SEL_*, see above
 611
 612     span_args()
 613       : start(0), end(0), mode(SEL_RANGE) { }
 614   };
 615
 616   span_args span[5];  // Range and mode for 5 spans
 617   int num_spans;      // Number of spans
 618   int pending_time;   // One plus time in minutes to wait after powerup before restarting
 619                       // interrupted offline scan after selective self-test.
 620   int scan_after_select; // Run offline scan after selective self-test:
 621                       // 0: don't change,
 622                       // 1: turn off scan after selective self-test,
 623                       // 2: turn on scan after selective self-test.
 624
 625   ata_selective_selftest_args()
 626     : num_spans(0), pending_time(0), scan_after_select(0) { }
 627 };
 628
 629 // Priority for vendor attribute defs
 630 enum ata_vendor_def_prior
 631 {
 632   PRIOR_DEFAULT,
 633   PRIOR_DATABASE,
 634   PRIOR_USER
 635 };
 636
 637 // Raw attribute value print formats
 638 enum ata_attr_raw_format
 639 {
 640   RAWFMT_DEFAULT,
 641   RAWFMT_RAW8,
 642   RAWFMT_RAW16,
 643   RAWFMT_RAW48,
 644   RAWFMT_HEX48,
 645   RAWFMT_RAW64,
 646   RAWFMT_HEX64,
 647   RAWFMT_RAW16_OPT_RAW16,
 648   RAWFMT_RAW16_OPT_AVG16,
 649   RAWFMT_RAW24_RAW24,
 650   RAWFMT_SEC2HOUR,
 651   RAWFMT_MIN2HOUR,
 652   RAWFMT_HALFMIN2HOUR,
 653   RAWFMT_TEMPMINMAX,
 654   RAWFMT_TEMP10X,
 655 };
 656
 657 // Attribute flags
 658 enum {
 659   ATTRFLAG_INCREASING = 0x01,   // Value not reset (for reallocated/pending counts)
 660   ATTRFLAG_NO_NORMVAL = 0x02,   // Normalized value not valid
 661   ATTRFLAG_NO_WORSTVAL = 0x04   // Worst value not valid
 662 };
 663
 664 // Vendor attribute display defs for all attribute ids
 665 class ata_vendor_attr_defs
 666 {
 667 public:
 668   struct entry
 669   {
 670     std::string name; // Attribute name, empty for default
 671     ata_attr_raw_format raw_format; // Raw value print format
 672     ata_vendor_def_prior priority; // Setting priority
 673     unsigned flags; // ATTRFLAG_*
 674     char byteorder[8+1]; // String [012345rvwz] to define byte order
 675
 676     entry()
 677       : raw_format(RAWFMT_DEFAULT),
 678         priority(PRIOR_DEFAULT),
 679         flags(0)
 680       { byteorder[0] = 0; }
 681   };
 682
 683   entry & operator[](unsigned char id)
 684     { return m_defs[id]; }
 685
 686   const entry & operator[](unsigned char id) const
 687     { return m_defs[id]; }
 688
 689 private:
 690   entry m_defs[256];
 691 };
 692
 693
 694 // Get information from drive
 695 int ataReadHDIdentity(ata_device * device, struct ata_identify_device *buf);
 696 int ataCheckPowerMode(ata_device * device);
 697
 698 /* Read S.M.A.R.T information from drive */
 699 int ataReadSmartValues(ata_device * device,struct ata_smart_values *);
 700 int ataReadSmartThresholds(ata_device * device, struct ata_smart_thresholds_pvt *);
 701 int ataReadErrorLog (ata_device * device, ata_smart_errorlog *data,
 702                      unsigned char fix_firmwarebug);
 703 int ataReadSelfTestLog(ata_device * device, ata_smart_selftestlog * data,
 704                        unsigned char fix_firmwarebug);
 705 int ataReadSelectiveSelfTestLog(ata_device * device, struct ata_selective_self_test_log *data);
 706 int ataSetSmartThresholds(ata_device * device, struct ata_smart_thresholds_pvt *);
 707 int ataReadLogDirectory(ata_device * device, ata_smart_log_directory *, bool gpl);
 708
 709 // Read GP Log page(s)
 710 bool ataReadLogExt(ata_device * device, unsigned char logaddr,
 711                    unsigned char features, unsigned page,
 712                    void * data, unsigned nsectors);
 713 // Read SMART Log page(s)
 714 bool ataReadSmartLog(ata_device * device, unsigned char logaddr,
 715                      void * data, unsigned nsectors);
 716 // Read SMART Extended Comprehensive Error Log
 717 bool ataReadExtErrorLog(ata_device * device, ata_smart_exterrlog * log,
 718                         unsigned nsectors);
 719 // Read SMART Extended Self-test Log
 720 bool ataReadExtSelfTestLog(ata_device * device, ata_smart_extselftestlog * log,
 721                            unsigned nsectors);
 722
 723 // Read SCT information
 724 int ataReadSCTStatus(ata_device * device, ata_sct_status_response * sts);
 725 int ataReadSCTTempHist(ata_device * device, ata_sct_temperature_history_table * tmh,
 726                        ata_sct_status_response * sts);
 727 // Set SCT temperature logging interval
 728 int ataSetSCTTempInterval(ata_device * device, unsigned interval, bool persistent);
 729
 730
 731 /* Enable/Disable SMART on device */
 732 int ataEnableSmart (ata_device * device);
 733 int ataDisableSmart (ata_device * device);
 734 int ataEnableAutoSave(ata_device * device);
 735 int ataDisableAutoSave(ata_device * device);
 736
 737 /* Automatic Offline Testing */
 738 int ataEnableAutoOffline (ata_device * device);
 739 int ataDisableAutoOffline (ata_device * device);
 740
 741 /* S.M.A.R.T. test commands */
 742 int ataSmartOfflineTest (ata_device * device);
 743 int ataSmartExtendSelfTest (ata_device * device);
 744 int ataSmartShortSelfTest (ata_device * device);
 745 int ataSmartShortCapSelfTest (ata_device * device);
 746 int ataSmartExtendCapSelfTest (ata_device * device);
 747 int ataSmartSelfTestAbort (ata_device * device);
 748 int ataWriteSelectiveSelfTestLog(ata_device * device, ata_selective_selftest_args & args,
 749                                  const ata_smart_values * sv, uint64_t num_sectors);
 750
 751 // Returns the latest compatibility of ATA/ATAPI Version the device
 752 // supports. Returns -1 if Version command is not supported
 753 int ataVersionInfo(const char ** description, const ata_identify_device * drive, unsigned short * minor);
 754
 755 // If SMART supported, this is guaranteed to return 1 if SMART is enabled, else 0.
 756 int ataDoesSmartWork(ata_device * device);
 757
 758 // returns 1 if SMART supported, 0 if not supported or can't tell
 759 int ataSmartSupport(const ata_identify_device * drive);
 760
 761 // Return values:
 762 //  1: SMART enabled
 763 //  0: SMART disabled
 764 // -1: can't tell if SMART is enabled -- try issuing ataDoesSmartWork command to see
 765 int ataIsSmartEnabled(const ata_identify_device * drive);
 766
 767 int ataSmartStatus2(ata_device * device);
 768
 769 int isSmartErrorLogCapable(const ata_smart_values * data, const ata_identify_device * identity);
 770
 771 int isSmartTestLogCapable(const ata_smart_values * data, const ata_identify_device * identity);
 772
 773 int isGeneralPurposeLoggingCapable(const ata_identify_device * identity);
 774
 775 int isSupportExecuteOfflineImmediate(const ata_smart_values * data);
 776
 777 int isSupportAutomaticTimer(const ata_smart_values * data);
 778
 779 int isSupportOfflineAbort(const ata_smart_values * data);
 780
 781 int isSupportOfflineSurfaceScan(const ata_smart_values * data);
 782
 783 int isSupportSelfTest(const ata_smart_values * data);
 784
 785 int isSupportConveyanceSelfTest(const ata_smart_values * data);
 786
 787 int isSupportSelectiveSelfTest(const ata_smart_values * data);
 788
 789 inline bool isSCTCapable(const ata_identify_device *drive)
 790   { return !!(drive->words088_255[206-88] & 0x01); } // 0x01 = SCT support
 791
 792 inline bool isSCTFeatureControlCapable(const ata_identify_device *drive)
 793   { return ((drive->words088_255[206-88] & 0x11) == 0x11); } // 0x10 = SCT Feature Control support
 794
 795 inline bool isSCTDataTableCapable(const ata_identify_device *drive)
 796   { return ((drive->words088_255[206-88] & 0x21) == 0x21); } // 0x20 = SCT Data Table support
 797
 798 int ataSmartTest(ata_device * device, int testtype, const ata_selective_selftest_args & args,
 799                  const ata_smart_values * sv, uint64_t num_sectors);
 800
 801 int TestTime(const ata_smart_values * data, int testtype);
 802
 803 // Attribute state
 804 enum ata_attr_state
 805 {
 806   ATTRSTATE_NON_EXISTING,   // No such Attribute
 807   ATTRSTATE_NO_NORMVAL,     // Normalized value not valid
 808   ATTRSTATE_BAD_THRESHOLD,  // Threshold not valid
 809   ATTRSTATE_NO_THRESHOLD,   // Unknown or no threshold
 810   ATTRSTATE_OK,             // Never failed
 811   ATTRSTATE_FAILED_PAST,    // Failed in the past
 812   ATTRSTATE_FAILED_NOW      // Failed now
 813 };
 814
 815 // Get attribute state
 816 ata_attr_state ata_get_attr_state(const ata_smart_attribute & attr,
 817                                   const ata_smart_threshold_entry & thre,
 818                                   const ata_vendor_attr_defs & defs);
 819
 820 // Get attribute raw value.
 821 uint64_t ata_get_attr_raw_value(const ata_smart_attribute & attr,
 822                                 const ata_vendor_attr_defs & defs);
 823
 824 // Format attribute raw value.
 825 std::string ata_format_attr_raw_value(const ata_smart_attribute & attr,
 826                                       const ata_vendor_attr_defs & defs);
 827
 828 // Get attribute name
 829 std::string ata_get_smart_attr_name(unsigned char id,
 830                                     const ata_vendor_attr_defs & defs);
 831
 832 // External handler function, for when a checksum is not correct.  Can
 833 // simply return if no action is desired, or can print error messages
 834 // as needed, or exit.  Is passed a string with the name of the Data
 835 // Structure with the incorrect checksum.
 836 void checksumwarning(const char *string);
 837
 838 // Find attribute index for attribute id, -1 if not found.
 839 int ata_find_attr_index(unsigned char id, const ata_smart_values & smartval);
 840
 841 // Return Temperature Attribute raw value selected according to possible
 842 // non-default interpretations. If the Attribute does not exist, return 0
 843 unsigned char ata_return_temperature_value(const ata_smart_values * data, const ata_vendor_attr_defs & defs);
 844
 845
 846 // This are the meanings of the Self-test failure checkpoint byte.
 847 // This is in the self-test log at offset 4 bytes into the self-test
 848 // descriptor and in the SMART READ DATA structure at byte offset
 849 // 371. These codes are not well documented.  The meanings returned by
 850 // this routine are used (at least) by Maxtor and IBM. Returns NULL if
 851 // not recognized.
 852 const char *SelfTestFailureCodeName(unsigned char which);
 853
 854
 855 #define MAX_ATTRIBUTE_NUM 256
 856
 857 // Parse vendor attribute display def (-v option).
 858 // Return false on error.
 859 bool parse_attribute_def(const char * opt, ata_vendor_attr_defs & defs,
 860                          ata_vendor_def_prior priority);
 861
 862 // Get ID and increase flag of current pending or offline
 863 // uncorrectable attribute.
 864 unsigned char get_unc_attr_id(bool offline, const ata_vendor_attr_defs & defs,
 865                               bool & increase);
 866
 867 // Return a multiline string containing a list of valid arguments for
 868 // parse_attribute_def().
 869 std::string create_vendor_attribute_arg_list();
 870
 871
 872 // These are two of the functions that are defined in os_*.c and need
 873 // to be ported to get smartmontools onto another OS.
 874 // Moved to C++ interface
 875 //int ata_command_interface(int device, smart_command_set command, int select, char *data);
 876 //int escalade_command_interface(int fd, int escalade_port, int escalade_type, smart_command_set command, int select, char *data);
 877 //int marvell_command_interface(int device, smart_command_set command, int select, char *data);
 878 //int highpoint_command_interface(int device, smart_command_set command, int select, char *data);
 879 //int areca_command_interface(int fd, int disknum, smart_command_set command, int select, char *data);
 880
 881
 882 // Optional functions of os_*.c
 883 #ifdef HAVE_ATA_IDENTIFY_IS_CACHED
 884 // Return true if OS caches the ATA identify sector
 885 //int ata_identify_is_cached(int fd);
 886 #endif
 887
 888 // This function is exported to give low-level capability
 889 int smartcommandhandler(ata_device * device, smart_command_set command, int select, char *data);
 890
 891 // Print one self-test log entry.
 892 bool ataPrintSmartSelfTestEntry(unsigned testnum, unsigned char test_type,
 893                                 unsigned char test_status,
 894                                 unsigned short timestamp,
 895                                 uint64_t failing_lba,
 896                                 bool print_error_only, bool & print_header);
 897
 898 // Print Smart self-test log, used by smartctl and smartd.
 899 int ataPrintSmartSelfTestlog(const ata_smart_selftestlog * data, bool allentries,
 900                              unsigned char fix_firmwarebug);
 901
 902 // Get number of sectors from IDENTIFY sector.
 903 uint64_t get_num_sectors(const ata_identify_device * drive);
 904
 905 // Convenience function for formatting strings from ata_identify_device.
 906 void format_ata_string(char * out, const char * in, int n, bool fix_swap);
 907 inline void format_ata_string(char * out, const unsigned char * in, int n, bool fix_swap)
 908   { format_ata_string(out, (const char *)in, n, fix_swap); }
 909
 910 // Utility routines.
 911 unsigned char checksum(const void * data);
 912
 913 void swap2(char *location);
 914 void swap4(char *location);
 915 void swap8(char *location);
 916 // Typesafe variants using overloading
 917 inline void swapx(unsigned short * p)
 918   { swap2((char*)p); }
 919 inline void swapx(unsigned int * p)
 920   { swap4((char*)p); }
 921 inline void swapx(uint64_t * p)
 922   { swap8((char*)p); }
 923
 924 // Return pseudo-device to parse "smartctl -r ataioctl,2 ..." output
 925 // and simulate an ATA device with same behaviour
 926 ata_device * get_parsed_ata_device(smart_interface * intf, const char * dev_name);
 927
 928 #endif /* ATACMDS_H_ */