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_dev_type {
  94         NO_DEVICE   = 0,          /* protocol */
  95         SAS_END_DEV = 1,          /* protocol */
  96         EDGE_DEV    = 2,          /* protocol */
  97         FANOUT_DEV  = 3,          /* protocol */
  98         SAS_HA      = 4,
  99         SATA_DEV    = 5,
 100         SATA_PM     = 7,
 101         SATA_PM_PORT= 8,
 102         SATA_PENDING  = 9,
 103 };
 104
 105 enum sas_protocol {
 106         SAS_PROTOCOL_NONE               = 0,
 107         SAS_PROTOCOL_SATA               = 0x01,
 108         SAS_PROTOCOL_SMP                = 0x02,
 109         SAS_PROTOCOL_STP                = 0x04,
 110         SAS_PROTOCOL_SSP                = 0x08,
 111         SAS_PROTOCOL_ALL                = 0x0E,
 112         SAS_PROTOCOL_STP_ALL            = SAS_PROTOCOL_STP|SAS_PROTOCOL_SATA,
 113 };
 114
 115 /* From the spec; local phys only */
 116 enum phy_func {
 117         PHY_FUNC_NOP,
 118         PHY_FUNC_LINK_RESET,              /* Enables the phy */
 119         PHY_FUNC_HARD_RESET,
 120         PHY_FUNC_DISABLE,
 121         PHY_FUNC_CLEAR_ERROR_LOG = 5,
 122         PHY_FUNC_CLEAR_AFFIL,
 123         PHY_FUNC_TX_SATA_PS_SIGNAL,
 124         PHY_FUNC_RELEASE_SPINUP_HOLD = 0x10, /* LOCAL PORT ONLY! */
 125         PHY_FUNC_SET_LINK_RATE,
 126         PHY_FUNC_GET_EVENTS,
 127 };
 128
 129 /* SAS LLDD would need to report only _very_few_ of those, like BROADCAST.
 130  * Most of those are here for completeness.
 131  */
 132 enum sas_prim {
 133         SAS_PRIM_AIP_NORMAL = 1,
 134         SAS_PRIM_AIP_R0     = 2,
 135         SAS_PRIM_AIP_R1     = 3,
 136         SAS_PRIM_AIP_R2     = 4,
 137         SAS_PRIM_AIP_WC     = 5,
 138         SAS_PRIM_AIP_WD     = 6,
 139         SAS_PRIM_AIP_WP     = 7,
 140         SAS_PRIM_AIP_RWP    = 8,
 141
 142         SAS_PRIM_BC_CH      = 9,
 143         SAS_PRIM_BC_RCH0    = 10,
 144         SAS_PRIM_BC_RCH1    = 11,
 145         SAS_PRIM_BC_R0      = 12,
 146         SAS_PRIM_BC_R1      = 13,
 147         SAS_PRIM_BC_R2      = 14,
 148         SAS_PRIM_BC_R3      = 15,
 149         SAS_PRIM_BC_R4      = 16,
 150
 151         SAS_PRIM_NOTIFY_ENSP= 17,
 152         SAS_PRIM_NOTIFY_R0  = 18,
 153         SAS_PRIM_NOTIFY_R1  = 19,
 154         SAS_PRIM_NOTIFY_R2  = 20,
 155
 156         SAS_PRIM_CLOSE_CLAF = 21,
 157         SAS_PRIM_CLOSE_NORM = 22,
 158         SAS_PRIM_CLOSE_R0   = 23,
 159         SAS_PRIM_CLOSE_R1   = 24,
 160
 161         SAS_PRIM_OPEN_RTRY  = 25,
 162         SAS_PRIM_OPEN_RJCT  = 26,
 163         SAS_PRIM_OPEN_ACPT  = 27,
 164
 165         SAS_PRIM_DONE       = 28,
 166         SAS_PRIM_BREAK      = 29,
 167
 168         SATA_PRIM_DMAT      = 33,
 169         SATA_PRIM_PMNAK     = 34,
 170         SATA_PRIM_PMACK     = 35,
 171         SATA_PRIM_PMREQ_S   = 36,
 172         SATA_PRIM_PMREQ_P   = 37,
 173         SATA_SATA_R_ERR     = 38,
 174 };
 175
 176 enum sas_open_rej_reason {
 177         /* Abandon open */
 178         SAS_OREJ_UNKNOWN   = 0,
 179         SAS_OREJ_BAD_DEST  = 1,
 180         SAS_OREJ_CONN_RATE = 2,
 181         SAS_OREJ_EPROTO    = 3,
 182         SAS_OREJ_RESV_AB0  = 4,
 183         SAS_OREJ_RESV_AB1  = 5,
 184         SAS_OREJ_RESV_AB2  = 6,
 185         SAS_OREJ_RESV_AB3  = 7,
 186         SAS_OREJ_WRONG_DEST= 8,
 187         SAS_OREJ_STP_NORES = 9,
 188
 189         /* Retry open */
 190         SAS_OREJ_NO_DEST   = 10,
 191         SAS_OREJ_PATH_BLOCKED = 11,
 192         SAS_OREJ_RSVD_CONT0 = 12,
 193         SAS_OREJ_RSVD_CONT1 = 13,
 194         SAS_OREJ_RSVD_INIT0 = 14,
 195         SAS_OREJ_RSVD_INIT1 = 15,
 196         SAS_OREJ_RSVD_STOP0 = 16,
 197         SAS_OREJ_RSVD_STOP1 = 17,
 198         SAS_OREJ_RSVD_RETRY = 18,
 199 };
 200
 201 enum sas_gpio_reg_type {
 202         SAS_GPIO_REG_CFG   = 0,
 203         SAS_GPIO_REG_RX    = 1,
 204         SAS_GPIO_REG_RX_GP = 2,
 205         SAS_GPIO_REG_TX    = 3,
 206         SAS_GPIO_REG_TX_GP = 4,
 207 };
 208
 209 struct  dev_to_host_fis {
 210         u8     fis_type;          /* 0x34 */
 211         u8     flags;
 212         u8     status;
 213         u8     error;
 214
 215         u8     lbal;
 216         union { u8 lbam; u8 byte_count_low; };
 217         union { u8 lbah; u8 byte_count_high; };
 218         u8     device;
 219
 220         u8     lbal_exp;
 221         u8     lbam_exp;
 222         u8     lbah_exp;
 223         u8     _r_a;
 224
 225         union { u8  sector_count; u8 interrupt_reason; };
 226         u8     sector_count_exp;
 227         u8     _r_b;
 228         u8     _r_c;
 229
 230         u32    _r_d;
 231 } __attribute__ ((packed));
 232
 233 struct host_to_dev_fis {
 234         u8     fis_type;          /* 0x27 */
 235         u8     flags;
 236         u8     command;
 237         u8     features;
 238
 239         u8     lbal;
 240         union { u8 lbam; u8 byte_count_low; };
 241         union { u8 lbah; u8 byte_count_high; };
 242         u8     device;
 243
 244         u8     lbal_exp;
 245         u8     lbam_exp;
 246         u8     lbah_exp;
 247         u8     features_exp;
 248
 249         union { u8  sector_count; u8 interrupt_reason; };
 250         u8     sector_count_exp;
 251         u8     _r_a;
 252         u8     control;
 253
 254         u32    _r_b;
 255 } __attribute__ ((packed));
 256
 257 /* Prefer to have code clarity over header file clarity.
 258  */
 259 #ifdef __LITTLE_ENDIAN_BITFIELD
 260 struct sas_identify_frame {
 261         /* Byte 0 */
 262         u8  frame_type:4;
 263         u8  dev_type:3;
 264         u8  _un0:1;
 265
 266         /* Byte 1 */
 267         u8  _un1;
 268
 269         /* Byte 2 */
 270         union {
 271                 struct {
 272                         u8  _un20:1;
 273                         u8  smp_iport:1;
 274                         u8  stp_iport:1;
 275                         u8  ssp_iport:1;
 276                         u8  _un247:4;
 277                 };
 278                 u8 initiator_bits;
 279         };
 280
 281         /* Byte 3 */
 282         union {
 283                 struct {
 284                         u8  _un30:1;
 285                         u8 smp_tport:1;
 286                         u8 stp_tport:1;
 287                         u8 ssp_tport:1;
 288                         u8 _un347:4;
 289                 };
 290                 u8 target_bits;
 291         };
 292
 293         /* Byte 4 - 11 */
 294         u8 _un4_11[8];
 295
 296         /* Byte 12 - 19 */
 297         u8 sas_addr[SAS_ADDR_SIZE];
 298
 299         /* Byte 20 */
 300         u8 phy_id;
 301
 302         u8 _un21_27[7];
 303
 304         __be32 crc;
 305 } __attribute__ ((packed));
 306
 307 struct ssp_frame_hdr {
 308         u8     frame_type;
 309         u8     hashed_dest_addr[HASHED_SAS_ADDR_SIZE];
 310         u8     _r_a;
 311         u8     hashed_src_addr[HASHED_SAS_ADDR_SIZE];
 312         __be16 _r_b;
 313
 314         u8     changing_data_ptr:1;
 315         u8     retransmit:1;
 316         u8     retry_data_frames:1;
 317         u8     _r_c:5;
 318
 319         u8     num_fill_bytes:2;
 320         u8     _r_d:6;
 321
 322         u32    _r_e;
 323         __be16 tag;
 324         __be16 tptt;
 325         __be32 data_offs;
 326 } __attribute__ ((packed));
 327
 328 struct ssp_response_iu {
 329         u8     _r_a[10];
 330
 331         u8     datapres:2;
 332         u8     _r_b:6;
 333
 334         u8     status;
 335
 336         u32    _r_c;
 337
 338         __be32 sense_data_len;
 339         __be32 response_data_len;
 340
 341         u8     resp_data[0];
 342         u8     sense_data[0];
 343 } __attribute__ ((packed));
 344
 345 /* ---------- SMP ---------- */
 346
 347 struct report_general_resp {
 348         __be16  change_count;
 349         __be16  route_indexes;
 350         u8      _r_a;
 351         u8      num_phys;
 352
 353         u8      conf_route_table:1;
 354         u8      configuring:1;
 355         u8      config_others:1;
 356         u8      orej_retry_supp:1;
 357         u8      stp_cont_awt:1;
 358         u8      self_config:1;
 359         u8      zone_config:1;
 360         u8      t2t_supp:1;
 361
 362         u8      _r_c;
 363
 364         u8      enclosure_logical_id[8];
 365
 366         u8      _r_d[12];
 367 } __attribute__ ((packed));
 368
 369 struct discover_resp {
 370         u8    _r_a[5];
 371
 372         u8    phy_id;
 373         __be16 _r_b;
 374
 375         u8    _r_c:4;
 376         u8    attached_dev_type:3;
 377         u8    _r_d:1;
 378
 379         u8    linkrate:4;
 380         u8    _r_e:4;
 381
 382         u8    attached_sata_host:1;
 383         u8    iproto:3;
 384         u8    _r_f:4;
 385
 386         u8    attached_sata_dev:1;
 387         u8    tproto:3;
 388         u8    _r_g:3;
 389         u8    attached_sata_ps:1;
 390
 391         u8    sas_addr[8];
 392         u8    attached_sas_addr[8];
 393         u8    attached_phy_id;
 394
 395         u8    _r_h[7];
 396
 397         u8    hmin_linkrate:4;
 398         u8    pmin_linkrate:4;
 399         u8    hmax_linkrate:4;
 400         u8    pmax_linkrate:4;
 401
 402         u8    change_count;
 403
 404         u8    pptv:4;
 405         u8    _r_i:3;
 406         u8    virtual:1;
 407
 408         u8    routing_attr:4;
 409         u8    _r_j:4;
 410
 411         u8    conn_type;
 412         u8    conn_el_index;
 413         u8    conn_phy_link;
 414
 415         u8    _r_k[8];
 416 } __attribute__ ((packed));
 417
 418 struct report_phy_sata_resp {
 419         u8    _r_a[5];
 420
 421         u8    phy_id;
 422         u8    _r_b;
 423
 424         u8    affil_valid:1;
 425         u8    affil_supp:1;
 426         u8    _r_c:6;
 427
 428         u32    _r_d;
 429
 430         u8    stp_sas_addr[8];
 431
 432         struct dev_to_host_fis fis;
 433
 434         u32   _r_e;
 435
 436         u8    affil_stp_ini_addr[8];
 437
 438         __be32 crc;
 439 } __attribute__ ((packed));
 440
 441 struct smp_resp {
 442         u8    frame_type;
 443         u8    function;
 444         u8    result;
 445         u8    reserved;
 446         union {
 447                 struct report_general_resp  rg;
 448                 struct discover_resp        disc;
 449                 struct report_phy_sata_resp rps;
 450         };
 451 } __attribute__ ((packed));
 452
 453 #elif defined(__BIG_ENDIAN_BITFIELD)
 454 struct sas_identify_frame {
 455         /* Byte 0 */
 456         u8  _un0:1;
 457         u8  dev_type:3;
 458         u8  frame_type:4;
 459
 460         /* Byte 1 */
 461         u8  _un1;
 462
 463         /* Byte 2 */
 464         union {
 465                 struct {
 466                         u8  _un247:4;
 467                         u8  ssp_iport:1;
 468                         u8  stp_iport:1;
 469                         u8  smp_iport:1;
 470                         u8  _un20:1;
 471                 };
 472                 u8 initiator_bits;
 473         };
 474
 475         /* Byte 3 */
 476         union {
 477                 struct {
 478                         u8 _un347:4;
 479                         u8 ssp_tport:1;
 480                         u8 stp_tport:1;
 481                         u8 smp_tport:1;
 482                         u8 _un30:1;
 483                 };
 484                 u8 target_bits;
 485         };
 486
 487         /* Byte 4 - 11 */
 488         u8 _un4_11[8];
 489
 490         /* Byte 12 - 19 */
 491         u8 sas_addr[SAS_ADDR_SIZE];
 492
 493         /* Byte 20 */
 494         u8 phy_id;
 495
 496         u8 _un21_27[7];
 497
 498         __be32 crc;
 499 } __attribute__ ((packed));
 500
 501 struct ssp_frame_hdr {
 502         u8     frame_type;
 503         u8     hashed_dest_addr[HASHED_SAS_ADDR_SIZE];
 504         u8     _r_a;
 505         u8     hashed_src_addr[HASHED_SAS_ADDR_SIZE];
 506         __be16 _r_b;
 507
 508         u8     _r_c:5;
 509         u8     retry_data_frames:1;
 510         u8     retransmit:1;
 511         u8     changing_data_ptr:1;
 512
 513         u8     _r_d:6;
 514         u8     num_fill_bytes:2;
 515
 516         u32    _r_e;
 517         __be16 tag;
 518         __be16 tptt;
 519         __be32 data_offs;
 520 } __attribute__ ((packed));
 521
 522 struct ssp_response_iu {
 523         u8     _r_a[10];
 524
 525         u8     _r_b:6;
 526         u8     datapres:2;
 527
 528         u8     status;
 529
 530         u32    _r_c;
 531
 532         __be32 sense_data_len;
 533         __be32 response_data_len;
 534
 535         u8     resp_data[0];
 536         u8     sense_data[0];
 537 } __attribute__ ((packed));
 538
 539 /* ---------- SMP ---------- */
 540
 541 struct report_general_resp {
 542         __be16  change_count;
 543         __be16  route_indexes;
 544         u8      _r_a;
 545         u8      num_phys;
 546
 547         u8      t2t_supp:1;
 548         u8      zone_config:1;
 549         u8      self_config:1;
 550         u8      stp_cont_awt:1;
 551         u8      orej_retry_supp:1;
 552         u8      config_others:1;
 553         u8      configuring:1;
 554         u8      conf_route_table:1;
 555
 556         u8      _r_c;
 557
 558         u8      enclosure_logical_id[8];
 559
 560         u8      _r_d[12];
 561 } __attribute__ ((packed));
 562
 563 struct discover_resp {
 564         u8    _r_a[5];
 565
 566         u8    phy_id;
 567         __be16 _r_b;
 568
 569         u8    _r_d:1;
 570         u8    attached_dev_type:3;
 571         u8    _r_c:4;
 572
 573         u8    _r_e:4;
 574         u8    linkrate:4;
 575
 576         u8    _r_f:4;
 577         u8    iproto:3;
 578         u8    attached_sata_host:1;
 579
 580         u8    attached_sata_ps:1;
 581         u8    _r_g:3;
 582         u8    tproto:3;
 583         u8    attached_sata_dev:1;
 584
 585         u8    sas_addr[8];
 586         u8    attached_sas_addr[8];
 587         u8    attached_phy_id;
 588
 589         u8    _r_h[7];
 590
 591         u8    pmin_linkrate:4;
 592         u8    hmin_linkrate:4;
 593         u8    pmax_linkrate:4;
 594         u8    hmax_linkrate:4;
 595
 596         u8    change_count;
 597
 598         u8    virtual:1;
 599         u8    _r_i:3;
 600         u8    pptv:4;
 601
 602         u8    _r_j:4;
 603         u8    routing_attr:4;
 604
 605         u8    conn_type;
 606         u8    conn_el_index;
 607         u8    conn_phy_link;
 608
 609         u8    _r_k[8];
 610 } __attribute__ ((packed));
 611
 612 struct report_phy_sata_resp {
 613         u8    _r_a[5];
 614
 615         u8    phy_id;
 616         u8    _r_b;
 617
 618         u8    _r_c:6;
 619         u8    affil_supp:1;
 620         u8    affil_valid:1;
 621
 622         u32   _r_d;
 623
 624         u8    stp_sas_addr[8];
 625
 626         struct dev_to_host_fis fis;
 627
 628         u32   _r_e;
 629
 630         u8    affil_stp_ini_addr[8];
 631
 632         __be32 crc;
 633 } __attribute__ ((packed));
 634
 635 struct smp_resp {
 636         u8    frame_type;
 637         u8    function;
 638         u8    result;
 639         u8    reserved;
 640         union {
 641                 struct report_general_resp  rg;
 642                 struct discover_resp        disc;
 643                 struct report_phy_sata_resp rps;
 644         };
 645 } __attribute__ ((packed));
 646
 647 #else
 648 #error "Bitfield order not defined!"
 649 #endif
 650
 651 #endif /* _SAS_H_ */