include/scsi/sas.h

   1 /*
   2  * SAS structures and definitions header file
   3  *
   4  * Copyright (C) 2005 Adaptec, Inc.  All rights reserved.
   5  * Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com>
   6  *
   7  * This file is licensed under GPLv2.
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License as
  11  * published by the Free Software Foundation; either version 2 of the
  12  * License, or (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful, but
  15  * WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  22  * USA
  23  *
  24  */
  25
  26 #ifndef _SAS_H_
  27 #define _SAS_H_
  28
  29 #include <linux/types.h>
  30 #include <asm/byteorder.h>
  31
  32 #define SAS_ADDR_SIZE        8
  33 #define HASHED_SAS_ADDR_SIZE 3
  34 #define SAS_ADDR(_sa) ((unsigned long long) be64_to_cpu(*(__be64 *)(_sa)))
  35
  36 #define SMP_REQUEST             0x40
  37 #define SMP_RESPONSE            0x41
  38
  39 #define SSP_DATA                0x01
  40 #define SSP_XFER_RDY            0x05
  41 #define SSP_COMMAND             0x06
  42 #define SSP_RESPONSE            0x07
  43 #define SSP_TASK                0x16
  44
  45 #define SMP_REPORT_GENERAL       0x00
  46 #define SMP_REPORT_MANUF_INFO    0x01
  47 #define SMP_READ_GPIO_REG        0x02
  48 #define SMP_DISCOVER             0x10
  49 #define SMP_REPORT_PHY_ERR_LOG   0x11
  50 #define SMP_REPORT_PHY_SATA      0x12
  51 #define SMP_REPORT_ROUTE_INFO    0x13
  52 #define SMP_WRITE_GPIO_REG       0x82
  53 #define SMP_CONF_ROUTE_INFO      0x90
  54 #define SMP_PHY_CONTROL          0x91
  55 #define SMP_PHY_TEST_FUNCTION    0x92
  56
  57 #define SMP_RESP_FUNC_ACC        0x00
  58 #define SMP_RESP_FUNC_UNK        0x01
  59 #define SMP_RESP_FUNC_FAILED     0x02
  60 #define SMP_RESP_INV_FRM_LEN     0x03
  61 #define SMP_RESP_NO_PHY          0x10
  62 #define SMP_RESP_NO_INDEX        0x11
  63 #define SMP_RESP_PHY_NO_SATA     0x12
  64 #define SMP_RESP_PHY_UNK_OP      0x13
  65 #define SMP_RESP_PHY_UNK_TESTF   0x14
  66 #define SMP_RESP_PHY_TEST_INPROG 0x15
  67 #define SMP_RESP_PHY_VACANT      0x16
  68
  69 /* SAM TMFs */
  70 #define TMF_ABORT_TASK      0x01
  71 #define TMF_ABORT_TASK_SET  0x02
  72 #define TMF_CLEAR_TASK_SET  0x04
  73 #define TMF_LU_RESET        0x08
  74 #define TMF_CLEAR_ACA       0x40
  75 #define TMF_QUERY_TASK      0x80
  76
  77 /* SAS TMF responses */
  78 #define TMF_RESP_FUNC_COMPLETE   0x00
  79 #define TMF_RESP_INVALID_FRAME   0x02
  80 #define TMF_RESP_FUNC_ESUPP      0x04
  81 #define TMF_RESP_FUNC_FAILED     0x05
  82 #define TMF_RESP_FUNC_SUCC       0x08
  83 #define TMF_RESP_NO_LUN          0x09
  84 #define TMF_RESP_OVERLAPPED_TAG  0x0A
  85
  86 enum sas_oob_mode {
  87         OOB_NOT_CONNECTED,
  88         SATA_OOB_MODE,
  89         SAS_OOB_MODE
  90 };
  91
  92 /* See sas_discover.c if you plan on changing these */
  93 enum sas_device_type {
  94         /* these are SAS protocol defined (attached device type field) */
  95         SAS_PHY_UNUSED = 0,
  96         SAS_END_DEVICE = 1,
  97         SAS_EDGE_EXPANDER_DEVICE = 2,
  98         SAS_FANOUT_EXPANDER_DEVICE = 3,
  99         /* these are internal to libsas */
 100         SAS_HA = 4,
 101         SAS_SATA_DEV = 5,
 102         SAS_SATA_PM = 7,
 103         SAS_SATA_PM_PORT = 8,
 104         SAS_SATA_PENDING = 9,
 105 };
 106
 107 enum sas_protocol {
 108         SAS_PROTOCOL_NONE               = 0,
 109         SAS_PROTOCOL_SATA               = 0x01,
 110         SAS_PROTOCOL_SMP                = 0x02,
 111         SAS_PROTOCOL_STP                = 0x04,
 112         SAS_PROTOCOL_SSP                = 0x08,
 113         SAS_PROTOCOL_ALL                = 0x0E,
 114         SAS_PROTOCOL_STP_ALL            = SAS_PROTOCOL_STP|SAS_PROTOCOL_SATA,
 115 };
 116
 117 /* From the spec; local phys only */
 118 enum phy_func {
 119         PHY_FUNC_NOP,
 120         PHY_FUNC_LINK_RESET,              /* Enables the phy */
 121         PHY_FUNC_HARD_RESET,
 122         PHY_FUNC_DISABLE,
 123         PHY_FUNC_CLEAR_ERROR_LOG = 5,
 124         PHY_FUNC_CLEAR_AFFIL,
 125         PHY_FUNC_TX_SATA_PS_SIGNAL,
 126         PHY_FUNC_RELEASE_SPINUP_HOLD = 0x10, /* LOCAL PORT ONLY! */
 127         PHY_FUNC_SET_LINK_RATE,
 128         PHY_FUNC_GET_EVENTS,
 129 };
 130
 131 /* SAS LLDD would need to report only _very_few_ of those, like BROADCAST.
 132  * Most of those are here for completeness.
 133  */
 134 enum sas_prim {
 135         SAS_PRIM_AIP_NORMAL = 1,
 136         SAS_PRIM_AIP_R0     = 2,
 137         SAS_PRIM_AIP_R1     = 3,
 138         SAS_PRIM_AIP_R2     = 4,
 139         SAS_PRIM_AIP_WC     = 5,
 140         SAS_PRIM_AIP_WD     = 6,
 141         SAS_PRIM_AIP_WP     = 7,
 142         SAS_PRIM_AIP_RWP    = 8,
 143
 144         SAS_PRIM_BC_CH      = 9,
 145         SAS_PRIM_BC_RCH0    = 10,
 146         SAS_PRIM_BC_RCH1    = 11,
 147         SAS_PRIM_BC_R0      = 12,
 148         SAS_PRIM_BC_R1      = 13,
 149         SAS_PRIM_BC_R2      = 14,
 150         SAS_PRIM_BC_R3      = 15,
 151         SAS_PRIM_BC_R4      = 16,
 152
 153         SAS_PRIM_NOTIFY_ENSP= 17,
 154         SAS_PRIM_NOTIFY_R0  = 18,
 155         SAS_PRIM_NOTIFY_R1  = 19,
 156         SAS_PRIM_NOTIFY_R2  = 20,
 157
 158         SAS_PRIM_CLOSE_CLAF = 21,
 159         SAS_PRIM_CLOSE_NORM = 22,
 160         SAS_PRIM_CLOSE_R0   = 23,
 161         SAS_PRIM_CLOSE_R1   = 24,
 162
 163         SAS_PRIM_OPEN_RTRY  = 25,
 164         SAS_PRIM_OPEN_RJCT  = 26,
 165         SAS_PRIM_OPEN_ACPT  = 27,
 166
 167         SAS_PRIM_DONE       = 28,
 168         SAS_PRIM_BREAK      = 29,
 169
 170         SATA_PRIM_DMAT      = 33,
 171         SATA_PRIM_PMNAK     = 34,
 172         SATA_PRIM_PMACK     = 35,
 173         SATA_PRIM_PMREQ_S   = 36,
 174         SATA_PRIM_PMREQ_P   = 37,
 175         SATA_SATA_R_ERR     = 38,
 176 };
 177
 178 enum sas_open_rej_reason {
 179         /* Abandon open */
 180         SAS_OREJ_UNKNOWN   = 0,
 181         SAS_OREJ_BAD_DEST  = 1,
 182         SAS_OREJ_CONN_RATE = 2,
 183         SAS_OREJ_EPROTO    = 3,
 184         SAS_OREJ_RESV_AB0  = 4,
 185         SAS_OREJ_RESV_AB1  = 5,
 186         SAS_OREJ_RESV_AB2  = 6,
 187         SAS_OREJ_RESV_AB3  = 7,
 188         SAS_OREJ_WRONG_DEST= 8,
 189         SAS_OREJ_STP_NORES = 9,
 190
 191         /* Retry open */
 192         SAS_OREJ_NO_DEST   = 10,
 193         SAS_OREJ_PATH_BLOCKED = 11,
 194         SAS_OREJ_RSVD_CONT0 = 12,
 195         SAS_OREJ_RSVD_CONT1 = 13,
 196         SAS_OREJ_RSVD_INIT0 = 14,
 197         SAS_OREJ_RSVD_INIT1 = 15,
 198         SAS_OREJ_RSVD_STOP0 = 16,
 199         SAS_OREJ_RSVD_STOP1 = 17,
 200         SAS_OREJ_RSVD_RETRY = 18,
 201 };
 202
 203 enum sas_gpio_reg_type {
 204         SAS_GPIO_REG_CFG   = 0,
 205         SAS_GPIO_REG_RX    = 1,
 206         SAS_GPIO_REG_RX_GP = 2,
 207         SAS_GPIO_REG_TX    = 3,
 208         SAS_GPIO_REG_TX_GP = 4,
 209 };
 210
 211 struct  dev_to_host_fis {
 212         u8     fis_type;          /* 0x34 */
 213         u8     flags;
 214         u8     status;
 215         u8     error;
 216
 217         u8     lbal;
 218         union { u8 lbam; u8 byte_count_low; };
 219         union { u8 lbah; u8 byte_count_high; };
 220         u8     device;
 221
 222         u8     lbal_exp;
 223         u8     lbam_exp;
 224         u8     lbah_exp;
 225         u8     _r_a;
 226
 227         union { u8  sector_count; u8 interrupt_reason; };
 228         u8     sector_count_exp;
 229         u8     _r_b;
 230         u8     _r_c;
 231
 232         u32    _r_d;
 233 } __attribute__ ((packed));
 234
 235 struct host_to_dev_fis {
 236         u8     fis_type;          /* 0x27 */
 237         u8     flags;
 238         u8     command;
 239         u8     features;
 240
 241         u8     lbal;
 242         union { u8 lbam; u8 byte_count_low; };
 243         union { u8 lbah; u8 byte_count_high; };
 244         u8     device;
 245
 246         u8     lbal_exp;
 247         u8     lbam_exp;
 248         u8     lbah_exp;
 249         u8     features_exp;
 250
 251         union { u8  sector_count; u8 interrupt_reason; };
 252         u8     sector_count_exp;
 253         u8     _r_a;
 254         u8     control;
 255
 256         u32    _r_b;
 257 } __attribute__ ((packed));
 258
 259 /* Prefer to have code clarity over header file clarity.
 260  */
 261 #ifdef __LITTLE_ENDIAN_BITFIELD
 262 struct sas_identify_frame {
 263         /* Byte 0 */
 264         u8  frame_type:4;
 265         u8  dev_type:3;
 266         u8  _un0:1;
 267
 268         /* Byte 1 */
 269         u8  _un1;
 270
 271         /* Byte 2 */
 272         union {
 273                 struct {
 274                         u8  _un20:1;
 275                         u8  smp_iport:1;
 276                         u8  stp_iport:1;
 277                         u8  ssp_iport:1;
 278                         u8  _un247:4;
 279                 };
 280                 u8 initiator_bits;
 281         };
 282
 283         /* Byte 3 */
 284         union {
 285                 struct {
 286                         u8  _un30:1;
 287                         u8 smp_tport:1;
 288                         u8 stp_tport:1;
 289                         u8 ssp_tport:1;
 290                         u8 _un347:4;
 291                 };
 292                 u8 target_bits;
 293         };
 294
 295         /* Byte 4 - 11 */
 296         u8 _un4_11[8];
 297
 298         /* Byte 12 - 19 */
 299         u8 sas_addr[SAS_ADDR_SIZE];
 300
 301         /* Byte 20 */
 302         u8 phy_id;
 303
 304         u8 _un21_27[7];
 305
 306         __be32 crc;
 307 } __attribute__ ((packed));
 308
 309 struct ssp_frame_hdr {
 310         u8     frame_type;
 311         u8     hashed_dest_addr[HASHED_SAS_ADDR_SIZE];
 312         u8     _r_a;
 313         u8     hashed_src_addr[HASHED_SAS_ADDR_SIZE];
 314         __be16 _r_b;
 315
 316         u8     changing_data_ptr:1;
 317         u8     retransmit:1;
 318         u8     retry_data_frames:1;
 319         u8     _r_c:5;
 320
 321         u8     num_fill_bytes:2;
 322         u8     _r_d:6;
 323
 324         u32    _r_e;
 325         __be16 tag;
 326         __be16 tptt;
 327         __be32 data_offs;
 328 } __attribute__ ((packed));
 329
 330 struct ssp_response_iu {
 331         u8     _r_a[10];
 332
 333         u8     datapres:2;
 334         u8     _r_b:6;
 335
 336         u8     status;
 337
 338         u32    _r_c;
 339
 340         __be32 sense_data_len;
 341         __be32 response_data_len;
 342
 343         u8     resp_data[0];
 344         u8     sense_data[0];
 345 } __attribute__ ((packed));
 346
 347 /* ---------- SMP ---------- */
 348
 349 struct report_general_resp {
 350         __be16  change_count;
 351         __be16  route_indexes;
 352         u8      _r_a;
 353         u8      num_phys;
 354
 355         u8      conf_route_table:1;
 356         u8      configuring:1;
 357         u8      config_others:1;
 358         u8      orej_retry_supp:1;
 359         u8      stp_cont_awt:1;
 360         u8      self_config:1;
 361         u8      zone_config:1;
 362         u8      t2t_supp:1;
 363
 364         u8      _r_c;
 365
 366         u8      enclosure_logical_id[8];
 367
 368         u8      _r_d[12];
 369 } __attribute__ ((packed));
 370
 371 struct discover_resp {
 372         u8    _r_a[5];
 373
 374         u8    phy_id;
 375         __be16 _r_b;
 376
 377         u8    _r_c:4;
 378         u8    attached_dev_type:3;
 379         u8    _r_d:1;
 380
 381         u8    linkrate:4;
 382         u8    _r_e:4;
 383
 384         u8    attached_sata_host:1;
 385         u8    iproto:3;
 386         u8    _r_f:4;
 387
 388         u8    attached_sata_dev:1;
 389         u8    tproto:3;
 390         u8    _r_g:3;
 391         u8    attached_sata_ps:1;
 392
 393         u8    sas_addr[8];
 394         u8    attached_sas_addr[8];
 395         u8    attached_phy_id;
 396
 397         u8    _r_h[7];
 398
 399         u8    hmin_linkrate:4;
 400         u8    pmin_linkrate:4;
 401         u8    hmax_linkrate:4;
 402         u8    pmax_linkrate:4;
 403
 404         u8    change_count;
 405
 406         u8    pptv:4;
 407         u8    _r_i:3;
 408         u8    virtual:1;
 409
 410         u8    routing_attr:4;
 411         u8    _r_j:4;
 412
 413         u8    conn_type;
 414         u8    conn_el_index;
 415         u8    conn_phy_link;
 416
 417         u8    _r_k[8];
 418 } __attribute__ ((packed));
 419
 420 struct report_phy_sata_resp {
 421         u8    _r_a[5];
 422
 423         u8    phy_id;
 424         u8    _r_b;
 425
 426         u8    affil_valid:1;
 427         u8    affil_supp:1;
 428         u8    _r_c:6;
 429
 430         u32    _r_d;
 431
 432         u8    stp_sas_addr[8];
 433
 434         struct dev_to_host_fis fis;
 435
 436         u32   _r_e;
 437
 438         u8    affil_stp_ini_addr[8];
 439
 440         __be32 crc;
 441 } __attribute__ ((packed));
 442
 443 struct smp_resp {
 444         u8    frame_type;
 445         u8    function;
 446         u8    result;
 447         u8    reserved;
 448         union {
 449                 struct report_general_resp  rg;
 450                 struct discover_resp        disc;
 451                 struct report_phy_sata_resp rps;
 452         };
 453 } __attribute__ ((packed));
 454
 455 #elif defined(__BIG_ENDIAN_BITFIELD)
 456 struct sas_identify_frame {
 457         /* Byte 0 */
 458         u8  _un0:1;
 459         u8  dev_type:3;
 460         u8  frame_type:4;
 461
 462         /* Byte 1 */
 463         u8  _un1;
 464
 465         /* Byte 2 */
 466         union {
 467                 struct {
 468                         u8  _un247:4;
 469                         u8  ssp_iport:1;
 470                         u8  stp_iport:1;
 471                         u8  smp_iport:1;
 472                         u8  _un20:1;
 473                 };
 474                 u8 initiator_bits;
 475         };
 476
 477         /* Byte 3 */
 478         union {
 479                 struct {
 480                         u8 _un347:4;
 481                         u8 ssp_tport:1;
 482                         u8 stp_tport:1;
 483                         u8 smp_tport:1;
 484                         u8 _un30:1;
 485                 };
 486                 u8 target_bits;
 487         };
 488
 489         /* Byte 4 - 11 */
 490         u8 _un4_11[8];
 491
 492         /* Byte 12 - 19 */
 493         u8 sas_addr[SAS_ADDR_SIZE];
 494
 495         /* Byte 20 */
 496         u8 phy_id;
 497
 498         u8 _un21_27[7];
 499
 500         __be32 crc;
 501 } __attribute__ ((packed));
 502
 503 struct ssp_frame_hdr {
 504         u8     frame_type;
 505         u8     hashed_dest_addr[HASHED_SAS_ADDR_SIZE];
 506         u8     _r_a;
 507         u8     hashed_src_addr[HASHED_SAS_ADDR_SIZE];
 508         __be16 _r_b;
 509
 510         u8     _r_c:5;
 511         u8     retry_data_frames:1;
 512         u8     retransmit:1;
 513         u8     changing_data_ptr:1;
 514
 515         u8     _r_d:6;
 516         u8     num_fill_bytes:2;
 517
 518         u32    _r_e;
 519         __be16 tag;
 520         __be16 tptt;
 521         __be32 data_offs;
 522 } __attribute__ ((packed));
 523
 524 struct ssp_response_iu {
 525         u8     _r_a[10];
 526
 527         u8     _r_b:6;
 528         u8     datapres:2;
 529
 530         u8     status;
 531
 532         u32    _r_c;
 533
 534         __be32 sense_data_len;
 535         __be32 response_data_len;
 536
 537         u8     resp_data[0];
 538         u8     sense_data[0];
 539 } __attribute__ ((packed));
 540
 541 /* ---------- SMP ---------- */
 542
 543 struct report_general_resp {
 544         __be16  change_count;
 545         __be16  route_indexes;
 546         u8      _r_a;
 547         u8      num_phys;
 548
 549         u8      t2t_supp:1;
 550         u8      zone_config:1;
 551         u8      self_config:1;
 552         u8      stp_cont_awt:1;
 553         u8      orej_retry_supp:1;
 554         u8      config_others:1;
 555         u8      configuring:1;
 556         u8      conf_route_table:1;
 557
 558         u8      _r_c;
 559
 560         u8      enclosure_logical_id[8];
 561
 562         u8      _r_d[12];
 563 } __attribute__ ((packed));
 564
 565 struct discover_resp {
 566         u8    _r_a[5];
 567
 568         u8    phy_id;
 569         __be16 _r_b;
 570
 571         u8    _r_d:1;
 572         u8    attached_dev_type:3;
 573         u8    _r_c:4;
 574
 575         u8    _r_e:4;
 576         u8    linkrate:4;
 577
 578         u8    _r_f:4;
 579         u8    iproto:3;
 580         u8    attached_sata_host:1;
 581
 582         u8    attached_sata_ps:1;
 583         u8    _r_g:3;
 584         u8    tproto:3;
 585         u8    attached_sata_dev:1;
 586
 587         u8    sas_addr[8];
 588         u8    attached_sas_addr[8];
 589         u8    attached_phy_id;
 590
 591         u8    _r_h[7];
 592
 593         u8    pmin_linkrate:4;
 594         u8    hmin_linkrate:4;
 595         u8    pmax_linkrate:4;
 596         u8    hmax_linkrate:4;
 597
 598         u8    change_count;
 599
 600         u8    virtual:1;
 601         u8    _r_i:3;
 602         u8    pptv:4;
 603
 604         u8    _r_j:4;
 605         u8    routing_attr:4;
 606
 607         u8    conn_type;
 608         u8    conn_el_index;
 609         u8    conn_phy_link;
 610
 611         u8    _r_k[8];
 612 } __attribute__ ((packed));
 613
 614 struct report_phy_sata_resp {
 615         u8    _r_a[5];
 616
 617         u8    phy_id;
 618         u8    _r_b;
 619
 620         u8    _r_c:6;
 621         u8    affil_supp:1;
 622         u8    affil_valid:1;
 623
 624         u32   _r_d;
 625
 626         u8    stp_sas_addr[8];
 627
 628         struct dev_to_host_fis fis;
 629
 630         u32   _r_e;
 631
 632         u8    affil_stp_ini_addr[8];
 633
 634         __be32 crc;
 635 } __attribute__ ((packed));
 636
 637 struct smp_resp {
 638         u8    frame_type;
 639         u8    function;
 640         u8    result;
 641         u8    reserved;
 642         union {
 643                 struct report_general_resp  rg;
 644                 struct discover_resp        disc;
 645                 struct report_phy_sata_resp rps;
 646         };
 647 } __attribute__ ((packed));
 648
 649 #else
 650 #error "Bitfield order not defined!"
 651 #endif
 652
 653 #endif /* _SAS_H_ */