include/scsi/sas.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * SAS structures and definitions header file
   4  *
   5  * Copyright (C) 2005 Adaptec, Inc.  All rights reserved.
   6  * Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com>
   7  */
   8
   9 #ifndef _SAS_H_
  10 #define _SAS_H_
  11
  12 #include <linux/types.h>
  13 #include <asm/byteorder.h>
  14
  15 #define SAS_ADDR_SIZE        8
  16 #define HASHED_SAS_ADDR_SIZE 3
  17 #define SAS_ADDR(_sa) ((unsigned long long) be64_to_cpu(*(__be64 *)(_sa)))
  18
  19 #define SMP_REQUEST             0x40
  20 #define SMP_RESPONSE            0x41
  21
  22 #define SSP_DATA                0x01
  23 #define SSP_XFER_RDY            0x05
  24 #define SSP_COMMAND             0x06
  25 #define SSP_RESPONSE            0x07
  26 #define SSP_TASK                0x16
  27
  28 #define SMP_REPORT_GENERAL       0x00
  29 #define SMP_REPORT_MANUF_INFO    0x01
  30 #define SMP_READ_GPIO_REG        0x02
  31 #define SMP_DISCOVER             0x10
  32 #define SMP_REPORT_PHY_ERR_LOG   0x11
  33 #define SMP_REPORT_PHY_SATA      0x12
  34 #define SMP_REPORT_ROUTE_INFO    0x13
  35 #define SMP_WRITE_GPIO_REG       0x82
  36 #define SMP_CONF_ROUTE_INFO      0x90
  37 #define SMP_PHY_CONTROL          0x91
  38 #define SMP_PHY_TEST_FUNCTION    0x92
  39
  40 #define SMP_RESP_FUNC_ACC        0x00
  41 #define SMP_RESP_FUNC_UNK        0x01
  42 #define SMP_RESP_FUNC_FAILED     0x02
  43 #define SMP_RESP_INV_FRM_LEN     0x03
  44 #define SMP_RESP_NO_PHY          0x10
  45 #define SMP_RESP_NO_INDEX        0x11
  46 #define SMP_RESP_PHY_NO_SATA     0x12
  47 #define SMP_RESP_PHY_UNK_OP      0x13
  48 #define SMP_RESP_PHY_UNK_TESTF   0x14
  49 #define SMP_RESP_PHY_TEST_INPROG 0x15
  50 #define SMP_RESP_PHY_VACANT      0x16
  51
  52 /* SAM TMFs */
  53 #define TMF_ABORT_TASK      0x01
  54 #define TMF_ABORT_TASK_SET  0x02
  55 #define TMF_CLEAR_TASK_SET  0x04
  56 #define TMF_LU_RESET        0x08
  57 #define TMF_CLEAR_ACA       0x40
  58 #define TMF_QUERY_TASK      0x80
  59
  60 /* SAS TMF responses */
  61 #define TMF_RESP_FUNC_COMPLETE   0x00
  62 #define TMF_RESP_INVALID_FRAME   0x02
  63 #define TMF_RESP_FUNC_ESUPP      0x04
  64 #define TMF_RESP_FUNC_FAILED     0x05
  65 #define TMF_RESP_FUNC_SUCC       0x08
  66 #define TMF_RESP_NO_LUN          0x09
  67 #define TMF_RESP_OVERLAPPED_TAG  0x0A
  68
  69 enum sas_oob_mode {
  70         OOB_NOT_CONNECTED,
  71         SATA_OOB_MODE,
  72         SAS_OOB_MODE
  73 };
  74
  75 /* See sas_discover.c if you plan on changing these */
  76 enum sas_device_type {
  77         /* these are SAS protocol defined (attached device type field) */
  78         SAS_PHY_UNUSED = 0,
  79         SAS_END_DEVICE = 1,
  80         SAS_EDGE_EXPANDER_DEVICE = 2,
  81         SAS_FANOUT_EXPANDER_DEVICE = 3,
  82         /* these are internal to libsas */
  83         SAS_HA = 4,
  84         SAS_SATA_DEV = 5,
  85         SAS_SATA_PM = 7,
  86         SAS_SATA_PM_PORT = 8,
  87         SAS_SATA_PENDING = 9,
  88 };
  89
  90 enum sas_protocol {
  91         SAS_PROTOCOL_NONE               = 0,
  92         SAS_PROTOCOL_SATA               = 0x01,
  93         SAS_PROTOCOL_SMP                = 0x02,
  94         SAS_PROTOCOL_STP                = 0x04,
  95         SAS_PROTOCOL_SSP                = 0x08,
  96         SAS_PROTOCOL_ALL                = 0x0E,
  97         SAS_PROTOCOL_STP_ALL            = SAS_PROTOCOL_STP|SAS_PROTOCOL_SATA,
  98 };
  99
 100 /* From the spec; local phys only */
 101 enum phy_func {
 102         PHY_FUNC_NOP,
 103         PHY_FUNC_LINK_RESET,              /* Enables the phy */
 104         PHY_FUNC_HARD_RESET,
 105         PHY_FUNC_DISABLE,
 106         PHY_FUNC_CLEAR_ERROR_LOG = 5,
 107         PHY_FUNC_CLEAR_AFFIL,
 108         PHY_FUNC_TX_SATA_PS_SIGNAL,
 109         PHY_FUNC_RELEASE_SPINUP_HOLD = 0x10, /* LOCAL PORT ONLY! */
 110         PHY_FUNC_SET_LINK_RATE,
 111         PHY_FUNC_GET_EVENTS,
 112 };
 113
 114 /* SAS LLDD would need to report only _very_few_ of those, like BROADCAST.
 115  * Most of those are here for completeness.
 116  */
 117 enum sas_prim {
 118         SAS_PRIM_AIP_NORMAL = 1,
 119         SAS_PRIM_AIP_R0     = 2,
 120         SAS_PRIM_AIP_R1     = 3,
 121         SAS_PRIM_AIP_R2     = 4,
 122         SAS_PRIM_AIP_WC     = 5,
 123         SAS_PRIM_AIP_WD     = 6,
 124         SAS_PRIM_AIP_WP     = 7,
 125         SAS_PRIM_AIP_RWP    = 8,
 126
 127         SAS_PRIM_BC_CH      = 9,
 128         SAS_PRIM_BC_RCH0    = 10,
 129         SAS_PRIM_BC_RCH1    = 11,
 130         SAS_PRIM_BC_R0      = 12,
 131         SAS_PRIM_BC_R1      = 13,
 132         SAS_PRIM_BC_R2      = 14,
 133         SAS_PRIM_BC_R3      = 15,
 134         SAS_PRIM_BC_R4      = 16,
 135
 136         SAS_PRIM_NOTIFY_ENSP= 17,
 137         SAS_PRIM_NOTIFY_R0  = 18,
 138         SAS_PRIM_NOTIFY_R1  = 19,
 139         SAS_PRIM_NOTIFY_R2  = 20,
 140
 141         SAS_PRIM_CLOSE_CLAF = 21,
 142         SAS_PRIM_CLOSE_NORM = 22,
 143         SAS_PRIM_CLOSE_R0   = 23,
 144         SAS_PRIM_CLOSE_R1   = 24,
 145
 146         SAS_PRIM_OPEN_RTRY  = 25,
 147         SAS_PRIM_OPEN_RJCT  = 26,
 148         SAS_PRIM_OPEN_ACPT  = 27,
 149
 150         SAS_PRIM_DONE       = 28,
 151         SAS_PRIM_BREAK      = 29,
 152
 153         SATA_PRIM_DMAT      = 33,
 154         SATA_PRIM_PMNAK     = 34,
 155         SATA_PRIM_PMACK     = 35,
 156         SATA_PRIM_PMREQ_S   = 36,
 157         SATA_PRIM_PMREQ_P   = 37,
 158         SATA_SATA_R_ERR     = 38,
 159 };
 160
 161 enum sas_open_rej_reason {
 162         /* Abandon open */
 163         SAS_OREJ_UNKNOWN   = 0,
 164         SAS_OREJ_BAD_DEST  = 1,
 165         SAS_OREJ_CONN_RATE = 2,
 166         SAS_OREJ_EPROTO    = 3,
 167         SAS_OREJ_RESV_AB0  = 4,
 168         SAS_OREJ_RESV_AB1  = 5,
 169         SAS_OREJ_RESV_AB2  = 6,
 170         SAS_OREJ_RESV_AB3  = 7,
 171         SAS_OREJ_WRONG_DEST= 8,
 172         SAS_OREJ_STP_NORES = 9,
 173
 174         /* Retry open */
 175         SAS_OREJ_NO_DEST   = 10,
 176         SAS_OREJ_PATH_BLOCKED = 11,
 177         SAS_OREJ_RSVD_CONT0 = 12,
 178         SAS_OREJ_RSVD_CONT1 = 13,
 179         SAS_OREJ_RSVD_INIT0 = 14,
 180         SAS_OREJ_RSVD_INIT1 = 15,
 181         SAS_OREJ_RSVD_STOP0 = 16,
 182         SAS_OREJ_RSVD_STOP1 = 17,
 183         SAS_OREJ_RSVD_RETRY = 18,
 184 };
 185
 186 enum sas_gpio_reg_type {
 187         SAS_GPIO_REG_CFG   = 0,
 188         SAS_GPIO_REG_RX    = 1,
 189         SAS_GPIO_REG_RX_GP = 2,
 190         SAS_GPIO_REG_TX    = 3,
 191         SAS_GPIO_REG_TX_GP = 4,
 192 };
 193
 194 struct  dev_to_host_fis {
 195         u8     fis_type;          /* 0x34 */
 196         u8     flags;
 197         u8     status;
 198         u8     error;
 199
 200         u8     lbal;
 201         union { u8 lbam; u8 byte_count_low; };
 202         union { u8 lbah; u8 byte_count_high; };
 203         u8     device;
 204
 205         u8     lbal_exp;
 206         u8     lbam_exp;
 207         u8     lbah_exp;
 208         u8     _r_a;
 209
 210         union { u8  sector_count; u8 interrupt_reason; };
 211         u8     sector_count_exp;
 212         u8     _r_b;
 213         u8     _r_c;
 214
 215         u32    _r_d;
 216 } __attribute__ ((packed));
 217
 218 struct host_to_dev_fis {
 219         u8     fis_type;          /* 0x27 */
 220         u8     flags;
 221         u8     command;
 222         u8     features;
 223
 224         u8     lbal;
 225         union { u8 lbam; u8 byte_count_low; };
 226         union { u8 lbah; u8 byte_count_high; };
 227         u8     device;
 228
 229         u8     lbal_exp;
 230         u8     lbam_exp;
 231         u8     lbah_exp;
 232         u8     features_exp;
 233
 234         union { u8  sector_count; u8 interrupt_reason; };
 235         u8     sector_count_exp;
 236         u8     _r_a;
 237         u8     control;
 238
 239         u32    _r_b;
 240 } __attribute__ ((packed));
 241
 242 /* Prefer to have code clarity over header file clarity.
 243  */
 244 #ifdef __LITTLE_ENDIAN_BITFIELD
 245 struct sas_identify_frame {
 246         /* Byte 0 */
 247         u8  frame_type:4;
 248         u8  dev_type:3;
 249         u8  _un0:1;
 250
 251         /* Byte 1 */
 252         u8  _un1;
 253
 254         /* Byte 2 */
 255         union {
 256                 struct {
 257                         u8  _un20:1;
 258                         u8  smp_iport:1;
 259                         u8  stp_iport:1;
 260                         u8  ssp_iport:1;
 261                         u8  _un247:4;
 262                 };
 263                 u8 initiator_bits;
 264         };
 265
 266         /* Byte 3 */
 267         union {
 268                 struct {
 269                         u8  _un30:1;
 270                         u8 smp_tport:1;
 271                         u8 stp_tport:1;
 272                         u8 ssp_tport:1;
 273                         u8 _un347:4;
 274                 };
 275                 u8 target_bits;
 276         };
 277
 278         /* Byte 4 - 11 */
 279         u8 _un4_11[8];
 280
 281         /* Byte 12 - 19 */
 282         u8 sas_addr[SAS_ADDR_SIZE];
 283
 284         /* Byte 20 */
 285         u8 phy_id;
 286
 287         u8 _un21_27[7];
 288
 289         __be32 crc;
 290 } __attribute__ ((packed));
 291
 292 struct ssp_frame_hdr {
 293         u8     frame_type;
 294         u8     hashed_dest_addr[HASHED_SAS_ADDR_SIZE];
 295         u8     _r_a;
 296         u8     hashed_src_addr[HASHED_SAS_ADDR_SIZE];
 297         __be16 _r_b;
 298
 299         u8     changing_data_ptr:1;
 300         u8     retransmit:1;
 301         u8     retry_data_frames:1;
 302         u8     _r_c:5;
 303
 304         u8     num_fill_bytes:2;
 305         u8     _r_d:6;
 306
 307         u32    _r_e;
 308         __be16 tag;
 309         __be16 tptt;
 310         __be32 data_offs;
 311 } __attribute__ ((packed));
 312
 313 struct ssp_response_iu {
 314         u8     _r_a[10];
 315
 316         u8     datapres:2;
 317         u8     _r_b:6;
 318
 319         u8     status;
 320
 321         u32    _r_c;
 322
 323         __be32 sense_data_len;
 324         __be32 response_data_len;
 325
 326         u8     resp_data[0];
 327         u8     sense_data[];
 328 } __attribute__ ((packed));
 329
 330 struct ssp_command_iu {
 331         u8     lun[8];
 332         u8     _r_a;
 333
 334         union {
 335                 struct {
 336                         u8  attr:3;
 337                         u8  prio:4;
 338                         u8  efb:1;
 339                 };
 340                 u8 efb_prio_attr;
 341         };
 342
 343         u8    _r_b;
 344
 345         u8    _r_c:2;
 346         u8    add_cdb_len:6;
 347
 348         u8    cdb[16];
 349         u8    add_cdb[];
 350 } __attribute__ ((packed));
 351
 352 struct xfer_rdy_iu {
 353         __be32 requested_offset;
 354         __be32 write_data_len;
 355         __be32 _r_a;
 356 } __attribute__ ((packed));
 357
 358 struct ssp_tmf_iu {
 359         u8     lun[8];
 360         u16    _r_a;
 361         u8     tmf;
 362         u8     _r_b;
 363         __be16 tag;
 364         u8     _r_c[14];
 365 } __attribute__ ((packed));
 366
 367 /* ---------- SMP ---------- */
 368
 369 struct report_general_resp {
 370         __be16  change_count;
 371         __be16  route_indexes;
 372         u8      _r_a;
 373         u8      num_phys;
 374
 375         u8      conf_route_table:1;
 376         u8      configuring:1;
 377         u8      config_others:1;
 378         u8      orej_retry_supp:1;
 379         u8      stp_cont_awt:1;
 380         u8      self_config:1;
 381         u8      zone_config:1;
 382         u8      t2t_supp:1;
 383
 384         u8      _r_c;
 385
 386         u8      enclosure_logical_id[8];
 387
 388         u8      _r_d[12];
 389 } __attribute__ ((packed));
 390
 391 struct discover_resp {
 392         u8    _r_a[5];
 393
 394         u8    phy_id;
 395         __be16 _r_b;
 396
 397         u8    _r_c:4;
 398         u8    attached_dev_type:3;
 399         u8    _r_d:1;
 400
 401         u8    linkrate:4;
 402         u8    _r_e:4;
 403
 404         u8    attached_sata_host:1;
 405         u8    iproto:3;
 406         u8    _r_f:4;
 407
 408         u8    attached_sata_dev:1;
 409         u8    tproto:3;
 410         u8    _r_g:3;
 411         u8    attached_sata_ps:1;
 412
 413         u8    sas_addr[8];
 414         u8    attached_sas_addr[8];
 415         u8    attached_phy_id;
 416
 417         u8    _r_h[7];
 418
 419         u8    hmin_linkrate:4;
 420         u8    pmin_linkrate:4;
 421         u8    hmax_linkrate:4;
 422         u8    pmax_linkrate:4;
 423
 424         u8    change_count;
 425
 426         u8    pptv:4;
 427         u8    _r_i:3;
 428         u8    virtual:1;
 429
 430         u8    routing_attr:4;
 431         u8    _r_j:4;
 432
 433         u8    conn_type;
 434         u8    conn_el_index;
 435         u8    conn_phy_link;
 436
 437         u8    _r_k[8];
 438 } __attribute__ ((packed));
 439
 440 struct report_phy_sata_resp {
 441         u8    _r_a[5];
 442
 443         u8    phy_id;
 444         u8    _r_b;
 445
 446         u8    affil_valid:1;
 447         u8    affil_supp:1;
 448         u8    _r_c:6;
 449
 450         u32    _r_d;
 451
 452         u8    stp_sas_addr[8];
 453
 454         struct dev_to_host_fis fis;
 455
 456         u32   _r_e;
 457
 458         u8    affil_stp_ini_addr[8];
 459
 460         __be32 crc;
 461 } __attribute__ ((packed));
 462
 463 struct smp_resp {
 464         u8    frame_type;
 465         u8    function;
 466         u8    result;
 467         u8    reserved;
 468         union {
 469                 struct report_general_resp  rg;
 470                 struct discover_resp        disc;
 471                 struct report_phy_sata_resp rps;
 472         };
 473 } __attribute__ ((packed));
 474
 475 #elif defined(__BIG_ENDIAN_BITFIELD)
 476 struct sas_identify_frame {
 477         /* Byte 0 */
 478         u8  _un0:1;
 479         u8  dev_type:3;
 480         u8  frame_type:4;
 481
 482         /* Byte 1 */
 483         u8  _un1;
 484
 485         /* Byte 2 */
 486         union {
 487                 struct {
 488                         u8  _un247:4;
 489                         u8  ssp_iport:1;
 490                         u8  stp_iport:1;
 491                         u8  smp_iport:1;
 492                         u8  _un20:1;
 493                 };
 494                 u8 initiator_bits;
 495         };
 496
 497         /* Byte 3 */
 498         union {
 499                 struct {
 500                         u8 _un347:4;
 501                         u8 ssp_tport:1;
 502                         u8 stp_tport:1;
 503                         u8 smp_tport:1;
 504                         u8 _un30:1;
 505                 };
 506                 u8 target_bits;
 507         };
 508
 509         /* Byte 4 - 11 */
 510         u8 _un4_11[8];
 511
 512         /* Byte 12 - 19 */
 513         u8 sas_addr[SAS_ADDR_SIZE];
 514
 515         /* Byte 20 */
 516         u8 phy_id;
 517
 518         u8 _un21_27[7];
 519
 520         __be32 crc;
 521 } __attribute__ ((packed));
 522
 523 struct ssp_frame_hdr {
 524         u8     frame_type;
 525         u8     hashed_dest_addr[HASHED_SAS_ADDR_SIZE];
 526         u8     _r_a;
 527         u8     hashed_src_addr[HASHED_SAS_ADDR_SIZE];
 528         __be16 _r_b;
 529
 530         u8     _r_c:5;
 531         u8     retry_data_frames:1;
 532         u8     retransmit:1;
 533         u8     changing_data_ptr:1;
 534
 535         u8     _r_d:6;
 536         u8     num_fill_bytes:2;
 537
 538         u32    _r_e;
 539         __be16 tag;
 540         __be16 tptt;
 541         __be32 data_offs;
 542 } __attribute__ ((packed));
 543
 544 struct ssp_response_iu {
 545         u8     _r_a[10];
 546
 547         u8     _r_b:6;
 548         u8     datapres:2;
 549
 550         u8     status;
 551
 552         u32    _r_c;
 553
 554         __be32 sense_data_len;
 555         __be32 response_data_len;
 556
 557         u8     resp_data[0];
 558         u8     sense_data[];
 559 } __attribute__ ((packed));
 560
 561 struct ssp_command_iu {
 562         u8     lun[8];
 563         u8     _r_a;
 564
 565         union {
 566                 struct {
 567                         u8  efb:1;
 568                         u8  prio:4;
 569                         u8  attr:3;
 570                 };
 571                 u8 efb_prio_attr;
 572         };
 573
 574         u8    _r_b;
 575
 576         u8    add_cdb_len:6;
 577         u8    _r_c:2;
 578
 579         u8    cdb[16];
 580         u8    add_cdb[];
 581 } __attribute__ ((packed));
 582
 583 struct xfer_rdy_iu {
 584         __be32 requested_offset;
 585         __be32 write_data_len;
 586         __be32 _r_a;
 587 } __attribute__ ((packed));
 588
 589 struct ssp_tmf_iu {
 590         u8     lun[8];
 591         u16    _r_a;
 592         u8     tmf;
 593         u8     _r_b;
 594         __be16 tag;
 595         u8     _r_c[14];
 596 } __attribute__ ((packed));
 597
 598 /* ---------- SMP ---------- */
 599
 600 struct report_general_resp {
 601         __be16  change_count;
 602         __be16  route_indexes;
 603         u8      _r_a;
 604         u8      num_phys;
 605
 606         u8      t2t_supp:1;
 607         u8      zone_config:1;
 608         u8      self_config:1;
 609         u8      stp_cont_awt:1;
 610         u8      orej_retry_supp:1;
 611         u8      config_others:1;
 612         u8      configuring:1;
 613         u8      conf_route_table:1;
 614
 615         u8      _r_c;
 616
 617         u8      enclosure_logical_id[8];
 618
 619         u8      _r_d[12];
 620 } __attribute__ ((packed));
 621
 622 struct discover_resp {
 623         u8    _r_a[5];
 624
 625         u8    phy_id;
 626         __be16 _r_b;
 627
 628         u8    _r_d:1;
 629         u8    attached_dev_type:3;
 630         u8    _r_c:4;
 631
 632         u8    _r_e:4;
 633         u8    linkrate:4;
 634
 635         u8    _r_f:4;
 636         u8    iproto:3;
 637         u8    attached_sata_host:1;
 638
 639         u8    attached_sata_ps:1;
 640         u8    _r_g:3;
 641         u8    tproto:3;
 642         u8    attached_sata_dev:1;
 643
 644         u8    sas_addr[8];
 645         u8    attached_sas_addr[8];
 646         u8    attached_phy_id;
 647
 648         u8    _r_h[7];
 649
 650         u8    pmin_linkrate:4;
 651         u8    hmin_linkrate:4;
 652         u8    pmax_linkrate:4;
 653         u8    hmax_linkrate:4;
 654
 655         u8    change_count;
 656
 657         u8    virtual:1;
 658         u8    _r_i:3;
 659         u8    pptv:4;
 660
 661         u8    _r_j:4;
 662         u8    routing_attr:4;
 663
 664         u8    conn_type;
 665         u8    conn_el_index;
 666         u8    conn_phy_link;
 667
 668         u8    _r_k[8];
 669 } __attribute__ ((packed));
 670
 671 struct report_phy_sata_resp {
 672         u8    _r_a[5];
 673
 674         u8    phy_id;
 675         u8    _r_b;
 676
 677         u8    _r_c:6;
 678         u8    affil_supp:1;
 679         u8    affil_valid:1;
 680
 681         u32   _r_d;
 682
 683         u8    stp_sas_addr[8];
 684
 685         struct dev_to_host_fis fis;
 686
 687         u32   _r_e;
 688
 689         u8    affil_stp_ini_addr[8];
 690
 691         __be32 crc;
 692 } __attribute__ ((packed));
 693
 694 struct smp_resp {
 695         u8    frame_type;
 696         u8    function;
 697         u8    result;
 698         u8    reserved;
 699         union {
 700                 struct report_general_resp  rg;
 701                 struct discover_resp        disc;
 702                 struct report_phy_sata_resp rps;
 703         };
 704 } __attribute__ ((packed));
 705
 706 #else
 707 #error "Bitfield order not defined!"
 708 #endif
 709
 710 #endif /* _SAS_H_ */