drivers/scsi/aic94xx/aic94xx_sas.h

   1 /*
   2  * Aic94xx SAS/SATA driver SAS definitions and hardware interface 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 file is part of the aic94xx driver.
  10  *
  11  * The aic94xx driver is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU General Public License as
  13  * published by the Free Software Foundation; version 2 of the
  14  * License.
  15  *
  16  * The aic94xx driver is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with the aic94xx driver; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  24  *
  25  */
  26
  27 #ifndef _AIC94XX_SAS_H_
  28 #define _AIC94XX_SAS_H_
  29
  30 #include <scsi/libsas.h>
  31
  32 /* ---------- DDBs ---------- */
  33 /* DDBs are device descriptor blocks which describe a device in the
  34  * domain that this sequencer can maintain low-level connections for
  35  * us.  They are be 64 bytes.
  36  */
  37 #define ASD_MAX_DDBS    128
  38
  39 struct asd_ddb_ssp_smp_target_port {
  40         u8     conn_type;         /* byte 0 */
  41 #define DDB_TP_CONN_TYPE 0x81     /* Initiator port and addr frame type 0x01 */
  42
  43         u8     conn_rate;
  44         __be16 init_conn_tag;
  45         u8     dest_sas_addr[8];  /* bytes 4-11 */
  46
  47         __le16 send_queue_head;
  48         u8     sq_suspended;
  49         u8     ddb_type;          /* DDB_TYPE_TARGET */
  50 #define DDB_TYPE_UNUSED    0xFF
  51 #define DDB_TYPE_TARGET    0xFE
  52 #define DDB_TYPE_INITIATOR 0xFD
  53 #define DDB_TYPE_PM_PORT   0xFC
  54
  55         __le16 _r_a;
  56         __be16 awt_def;
  57
  58         u8     compat_features;   /* byte 20 */
  59         u8     pathway_blocked_count;
  60         __be16 arb_wait_time;
  61         __be32 more_compat_features; /* byte 24 */
  62
  63         u8     conn_mask;
  64         u8     flags;     /* concurrent conn:2,2 and open:0(1) */
  65 #define CONCURRENT_CONN_SUPP 0x04
  66 #define OPEN_REQUIRED        0x01
  67
  68         u16    _r_b;
  69         __le16 exec_queue_tail;
  70         __le16 send_queue_tail;
  71         __le16 sister_ddb;
  72
  73         __le16 _r_c;
  74
  75         u8     max_concurrent_conn;
  76         u8     num_concurrent_conn;
  77         u8     num_contexts;
  78
  79         u8     _r_d;
  80
  81         __le16 active_task_count;
  82
  83         u8     _r_e[9];
  84
  85         u8     itnl_reason;       /* I_T nexus loss reason */
  86
  87         __le16 _r_f;
  88
  89         __le16 itnl_timeout;
  90 #define ITNL_TIMEOUT_CONST 0x7D0 /* 2 seconds */
  91
  92         __le32 itnl_timestamp;
  93 } __attribute__ ((packed));
  94
  95 struct asd_ddb_stp_sata_target_port {
  96         u8     conn_type;         /* byte 0 */
  97         u8     conn_rate;
  98         __be16 init_conn_tag;
  99         u8     dest_sas_addr[8];  /* bytes 4-11 */
 100
 101         __le16 send_queue_head;
 102         u8     sq_suspended;
 103         u8     ddb_type;          /* DDB_TYPE_TARGET */
 104
 105         __le16 _r_a;
 106
 107         __be16 awt_def;
 108         u8     compat_features;   /* byte 20 */
 109         u8     pathway_blocked_count;
 110         __be16 arb_wait_time;
 111         __be32 more_compat_features; /* byte 24 */
 112
 113         u8     conn_mask;
 114         u8     flags;     /* concurrent conn:2,2 and open:0(1) */
 115 #define SATA_MULTIPORT     0x80
 116 #define SUPPORTS_AFFIL     0x40
 117 #define STP_AFFIL_POL      0x20
 118
 119         u8     _r_b;
 120         u8     flags2;            /* STP close policy:0 */
 121 #define STP_CL_POL_NO_TX    0x00
 122 #define STP_CL_POL_BTW_CMDS 0x01
 123
 124         __le16 exec_queue_tail;
 125         __le16 send_queue_tail;
 126         __le16 sister_ddb;
 127         __le16 ata_cmd_scbptr;
 128         __le32 sata_tag_alloc_mask;
 129         __le16 active_task_count;
 130         __le16 _r_c;
 131         __le32 sata_sactive;
 132         u8     num_sata_tags;
 133         u8     sata_status;
 134         u8     sata_ending_status;
 135         u8     itnl_reason;       /* I_T nexus loss reason */
 136         __le16 ncq_data_scb_ptr;
 137         __le16 itnl_timeout;
 138         __le32 itnl_timestamp;
 139 } __attribute__ ((packed));
 140
 141 /* This struct asd_ddb_init_port, describes the device descriptor block
 142  * of an initiator port (when the sequencer is operating in target mode).
 143  * Bytes [0,11] and [20,27] are from the OPEN address frame.
 144  * The sequencer allocates an initiator port DDB entry.
 145  */
 146 struct asd_ddb_init_port {
 147         u8     conn_type;         /* byte 0 */
 148         u8     conn_rate;
 149         __be16 init_conn_tag;     /* BE */
 150         u8     dest_sas_addr[8];
 151         __le16 send_queue_head;   /* LE, byte 12 */
 152         u8     sq_suspended;
 153         u8     ddb_type;          /* DDB_TYPE_INITIATOR */
 154         __le16 _r_a;
 155         __be16 awt_def;           /* BE */
 156         u8     compat_features;
 157         u8     pathway_blocked_count;
 158         __be16 arb_wait_time;     /* BE */
 159         __be32 more_compat_features; /* BE */
 160         u8     conn_mask;
 161         u8     flags;             /* == 5 */
 162         u16    _r_b;
 163         __le16 exec_queue_tail;   /* execution queue tail */
 164         __le16 send_queue_tail;
 165         __le16 sister_ddb;
 166         __le16 init_resp_timeout; /* initiator response timeout */
 167         __le32 _r_c;
 168         __le16 active_tasks;      /* active task count */
 169         __le16 init_list;         /* initiator list link pointer */
 170         __le32 _r_d;
 171         u8     max_conn_to[3]; /* from Conn-Disc mode page, in us, LE */
 172         u8     itnl_reason;       /* I_T nexus loss reason */
 173         __le16 bus_inact_to; /* from Conn-Disc mode page, in 100 us, LE */
 174         __le16 itnl_to;           /* from the Protocol Specific Port Ctrl MP */
 175         __le32 itnl_timestamp;
 176 } __attribute__ ((packed));
 177
 178 /* This struct asd_ddb_sata_tag, describes a look-up table to be used
 179  * by the sequencers.  SATA II, IDENTIFY DEVICE data, word 76, bit 8:
 180  * NCQ support.  This table is used by the sequencers to find the
 181  * corresponding SCB, given a SATA II tag value.
 182  */
 183 struct asd_ddb_sata_tag {
 184         __le16 scb_pointer[32];
 185 } __attribute__ ((packed));
 186
 187 /* This struct asd_ddb_sata_pm_table, describes a port number to
 188  * connection handle look-up table.  SATA targets attached to a port
 189  * multiplier require a 4-bit port number value.  There is one DDB
 190  * entry of this type for each SATA port multiplier (sister DDB).
 191  * Given a SATA PM port number, this table gives us the SATA PM Port
 192  * DDB of the SATA port multiplier port (i.e. the SATA target
 193  * discovered on the port).
 194  */
 195 struct asd_ddb_sata_pm_table {
 196         __le16 ddb_pointer[16];
 197         __le16 _r_a[16];
 198 } __attribute__ ((packed));
 199
 200 /* This struct asd_ddb_sata_pm_port, describes the SATA port multiplier
 201  * port format DDB.
 202  */
 203 struct asd_ddb_sata_pm_port {
 204         u8     _r_a[15];
 205         u8     ddb_type;
 206         u8     _r_b[13];
 207         u8     pm_port_flags;
 208 #define PM_PORT_MASK  0xF0
 209 #define PM_PORT_SET   0x02
 210         u8     _r_c[6];
 211         __le16 sister_ddb;
 212         __le16 ata_cmd_scbptr;
 213         __le32 sata_tag_alloc_mask;
 214         __le16 active_task_count;
 215         __le16 parent_ddb;
 216         __le32 sata_sactive;
 217         u8     num_sata_tags;
 218         u8     sata_status;
 219         u8     sata_ending_status;
 220         u8     _r_d[9];
 221 } __attribute__ ((packed));
 222
 223 /* This struct asd_ddb_seq_shared, describes a DDB shared by the
 224  * central and link sequencers.  port_map_by_links is indexed phy
 225  * number [0,7]; each byte is a bit mask of all the phys that are in
 226  * the same port as the indexed phy.
 227  */
 228 struct asd_ddb_seq_shared {
 229         __le16 q_free_ddb_head;
 230         __le16 q_free_ddb_tail;
 231         __le16 q_free_ddb_cnt;
 232         __le16 q_used_ddb_head;
 233         __le16 q_used_ddb_tail;
 234         __le16 shared_mem_lock;
 235         __le16 smp_conn_tag;
 236         __le16 est_nexus_buf_cnt;
 237         __le16 est_nexus_buf_thresh;
 238         u32    _r_a;
 239         u8     settable_max_contexts;
 240         u8     _r_b[23];
 241         u8     conn_not_active;
 242         u8     phy_is_up;
 243         u8     _r_c[8];
 244         u8     port_map_by_links[8];
 245 } __attribute__ ((packed));
 246
 247 /* ---------- SG Element ---------- */
 248
 249 /* This struct sg_el, describes the hardware scatter gather buffer
 250  * element.  All entries are little endian.  In an SCB, there are 2 of
 251  * this, plus one more, called a link element of this indicating a
 252  * sublist if needed.
 253  *
 254  * A link element has only the bus address set and the flags (DS) bit
 255  * valid.  The bus address points to the start of the sublist.
 256  *
 257  * If a sublist is needed, then that sublist should also include the 2
 258  * sg_el embedded in the SCB, in which case next_sg_offset is 32,
 259  * since sizeof(sg_el) = 16; EOS should be 1 and EOL 0 in this case.
 260  */
 261 struct sg_el {
 262         __le64 bus_addr;
 263         __le32 size;
 264         __le16 _r;
 265         u8     next_sg_offs;
 266         u8     flags;
 267 #define ASD_SG_EL_DS_MASK   0x30
 268 #define ASD_SG_EL_DS_OCM    0x10
 269 #define ASD_SG_EL_DS_HM     0x00
 270 #define ASD_SG_EL_LIST_MASK 0xC0
 271 #define ASD_SG_EL_LIST_EOL  0x40
 272 #define ASD_SG_EL_LIST_EOS  0x80
 273 } __attribute__ ((packed));
 274
 275 /* ---------- SCBs ---------- */
 276
 277 /* An SCB (sequencer control block) is comprised of a common header
 278  * and a task part, for a total of 128 bytes.  All fields are in LE
 279  * order, unless otherwise noted.
 280  */
 281
 282 /* This struct scb_header, defines the SCB header format.
 283  */
 284 struct scb_header {
 285         __le64 next_scb;
 286         __le16 index;             /* transaction context */
 287         u8     opcode;
 288 } __attribute__ ((packed));
 289
 290 /* SCB opcodes: Execution queue
 291  */
 292 #define INITIATE_SSP_TASK       0x00
 293 #define INITIATE_LONG_SSP_TASK  0x01
 294 #define INITIATE_BIDIR_SSP_TASK 0x02
 295 #define ABORT_TASK              0x03
 296 #define INITIATE_SSP_TMF        0x04
 297 #define SSP_TARG_GET_DATA       0x05
 298 #define SSP_TARG_GET_DATA_GOOD  0x06
 299 #define SSP_TARG_SEND_RESP      0x07
 300 #define QUERY_SSP_TASK          0x08
 301 #define INITIATE_ATA_TASK       0x09
 302 #define INITIATE_ATAPI_TASK     0x0a
 303 #define CONTROL_ATA_DEV         0x0b
 304 #define INITIATE_SMP_TASK       0x0c
 305 #define SMP_TARG_SEND_RESP      0x0f
 306
 307 /* SCB opcodes: Send Queue
 308  */
 309 #define SSP_TARG_SEND_DATA      0x40
 310 #define SSP_TARG_SEND_DATA_GOOD 0x41
 311
 312 /* SCB opcodes: Link Queue
 313  */
 314 #define CONTROL_PHY             0x80
 315 #define SEND_PRIMITIVE          0x81
 316 #define INITIATE_LINK_ADM_TASK  0x82
 317
 318 /* SCB opcodes: other
 319  */
 320 #define EMPTY_SCB               0xc0
 321 #define INITIATE_SEQ_ADM_TASK   0xc1
 322 #define EST_ICL_TARG_WINDOW     0xc2
 323 #define COPY_MEM                0xc3
 324 #define CLEAR_NEXUS             0xc4
 325 #define INITIATE_DDB_ADM_TASK   0xc6
 326 #define ESTABLISH_NEXUS_ESCB    0xd0
 327
 328 #define LUN_SIZE                8
 329
 330 /* See SAS spec, task IU
 331  */
 332 struct ssp_task_iu {
 333         u8     lun[LUN_SIZE];     /* BE */
 334         u16    _r_a;
 335         u8     tmf;
 336         u8     _r_b;
 337         __be16 tag;               /* BE */
 338         u8     _r_c[14];
 339 } __attribute__ ((packed));
 340
 341 /* See SAS spec, command IU
 342  */
 343 struct ssp_command_iu {
 344         u8     lun[LUN_SIZE];
 345         u8     _r_a;
 346         u8     efb_prio_attr;     /* enable first burst, task prio & attr */
 347 #define EFB_MASK        0x80
 348 #define TASK_PRIO_MASK  0x78
 349 #define TASK_ATTR_MASK  0x07
 350
 351         u8    _r_b;
 352         u8     add_cdb_len;       /* in dwords, since bit 0,1 are reserved */
 353         union {
 354                 u8     cdb[16];
 355                 struct {
 356                         __le64 long_cdb_addr;     /* bus address, LE */
 357                         __le32 long_cdb_size;     /* LE */
 358                         u8     _r_c[3];
 359                         u8     eol_ds;            /* eol:6,6, ds:5,4 */
 360                 } long_cdb;       /* sequencer extension */
 361         };
 362 } __attribute__ ((packed));
 363
 364 struct xfer_rdy_iu {
 365         __be32 requested_offset;  /* BE */
 366         __be32 write_data_len;    /* BE */
 367         __be32 _r_a;
 368 } __attribute__ ((packed));
 369
 370 /* ---------- SCB tasks ---------- */
 371
 372 /* This is both ssp_task and long_ssp_task
 373  */
 374 struct initiate_ssp_task {
 375         u8     proto_conn_rate;   /* proto:6,4, conn_rate:3,0 */
 376         __le32 total_xfer_len;
 377         struct ssp_frame_hdr  ssp_frame;
 378         struct ssp_command_iu ssp_cmd;
 379         __le16 sister_scb;        /* 0xFFFF */
 380         __le16 conn_handle;       /* index to DDB for the intended target */
 381         u8     data_dir;          /* :1,0 */
 382 #define DATA_DIR_NONE   0x00
 383 #define DATA_DIR_IN     0x01
 384 #define DATA_DIR_OUT    0x02
 385 #define DATA_DIR_BYRECIPIENT 0x03
 386
 387         u8     _r_a;
 388         u8     retry_count;
 389         u8     _r_b[5];
 390         struct sg_el sg_element[3]; /* 2 real and 1 link */
 391 } __attribute__ ((packed));
 392
 393 /* This defines both ata_task and atapi_task.
 394  * ata: C bit of FIS should be 1,
 395  * atapi: C bit of FIS should be 1, and command register should be 0xA0,
 396  * to indicate a packet command.
 397  */
 398 struct initiate_ata_task {
 399         u8     proto_conn_rate;
 400         __le32 total_xfer_len;
 401         struct host_to_dev_fis fis;
 402         __le32 data_offs;
 403         u8     atapi_packet[16];
 404         u8     _r_a[12];
 405         __le16 sister_scb;
 406         __le16 conn_handle;
 407         u8     ata_flags;         /* CSMI:6,6, DTM:4,4, QT:3,3, data dir:1,0 */
 408 #define CSMI_TASK           0x40
 409 #define DATA_XFER_MODE_DMA  0x10
 410 #define ATA_Q_TYPE_MASK     0x08
 411 #define ATA_Q_TYPE_UNTAGGED 0x00
 412 #define ATA_Q_TYPE_NCQ      0x08
 413
 414         u8     _r_b;
 415         u8     retry_count;
 416         u8     _r_c;
 417         u8     flags;
 418 #define STP_AFFIL_POLICY   0x20
 419 #define SET_AFFIL_POLICY   0x10
 420 #define RET_PARTIAL_SGLIST 0x02
 421
 422         u8     _r_d[3];
 423         struct sg_el sg_element[3];
 424 } __attribute__ ((packed));
 425
 426 struct initiate_smp_task {
 427         u8     proto_conn_rate;
 428         u8     _r_a[40];
 429         struct sg_el smp_req;
 430         __le16 sister_scb;
 431         __le16 conn_handle;
 432         u8     _r_c[8];
 433         struct sg_el smp_resp;
 434         u8     _r_d[32];
 435 } __attribute__ ((packed));
 436
 437 struct control_phy {
 438         u8     phy_id;
 439         u8     sub_func;
 440 #define DISABLE_PHY            0x00
 441 #define ENABLE_PHY             0x01
 442 #define RELEASE_SPINUP_HOLD    0x02
 443 #define ENABLE_PHY_NO_SAS_OOB  0x03
 444 #define ENABLE_PHY_NO_SATA_OOB 0x04
 445 #define PHY_NO_OP              0x05
 446 #define EXECUTE_HARD_RESET     0x81
 447
 448         u8     func_mask;
 449         u8     speed_mask;
 450         u8     hot_plug_delay;
 451         u8     port_type;
 452         u8     flags;
 453 #define DEV_PRES_TIMER_OVERRIDE_ENABLE 0x01
 454 #define DISABLE_PHY_IF_OOB_FAILS       0x02
 455
 456         __le32 timeout_override;
 457         u8     link_reset_retries;
 458         u8     _r_a[47];
 459         __le16 conn_handle;
 460         u8     _r_b[56];
 461 } __attribute__ ((packed));
 462
 463 struct control_ata_dev {
 464         u8     proto_conn_rate;
 465         __le32 _r_a;
 466         struct host_to_dev_fis fis;
 467         u8     _r_b[32];
 468         __le16 sister_scb;
 469         __le16 conn_handle;
 470         u8     ata_flags;         /* 0 */
 471         u8     _r_c[55];
 472 } __attribute__ ((packed));
 473
 474 struct empty_scb {
 475         u8     num_valid;
 476         __le32 _r_a;
 477 #define ASD_EDBS_PER_SCB 7
 478 /* header+data+CRC+DMA suffix data */
 479 #define ASD_EDB_SIZE (24+1024+4+16)
 480         struct sg_el eb[ASD_EDBS_PER_SCB];
 481 #define ELEMENT_NOT_VALID  0xC0
 482 } __attribute__ ((packed));
 483
 484 struct initiate_link_adm {
 485         u8     phy_id;
 486         u8     sub_func;
 487 #define GET_LINK_ERROR_COUNT      0x00
 488 #define RESET_LINK_ERROR_COUNT    0x01
 489 #define ENABLE_NOTIFY_SPINUP_INTS 0x02
 490
 491         u8     _r_a[57];
 492         __le16 conn_handle;
 493         u8     _r_b[56];
 494 } __attribute__ ((packed));
 495
 496 struct copy_memory {
 497         u8     _r_a;
 498         __le16 xfer_len;
 499         __le16 _r_b;
 500         __le64 src_busaddr;
 501         u8     src_ds;            /* See definition of sg_el */
 502         u8     _r_c[45];
 503         __le16 conn_handle;
 504         __le64 _r_d;
 505         __le64 dest_busaddr;
 506         u8     dest_ds;           /* See definition of sg_el */
 507         u8     _r_e[39];
 508 } __attribute__ ((packed));
 509
 510 struct abort_task {
 511         u8     proto_conn_rate;
 512         __le32 _r_a;
 513         struct ssp_frame_hdr ssp_frame;
 514         struct ssp_task_iu ssp_task;
 515         __le16 sister_scb;
 516         __le16 conn_handle;
 517         u8     flags;     /* ovrd_itnl_timer:3,3, suspend_data_trans:2,2 */
 518 #define SUSPEND_DATA_TRANS 0x04
 519
 520         u8     _r_b;
 521         u8     retry_count;
 522         u8     _r_c[5];
 523         __le16 index;  /* Transaction context of task to be queried */
 524         __le16 itnl_to;
 525         u8     _r_d[44];
 526 } __attribute__ ((packed));
 527
 528 struct clear_nexus {
 529         u8     nexus;
 530 #define NEXUS_ADAPTER  0x00
 531 #define NEXUS_PORT     0x01
 532 #define NEXUS_I_T      0x02
 533 #define NEXUS_I_T_L    0x03
 534 #define NEXUS_TAG      0x04
 535 #define NEXUS_TRANS_CX 0x05
 536 #define NEXUS_SATA_TAG 0x06
 537 #define NEXUS_T_L      0x07
 538 #define NEXUS_L        0x08
 539 #define NEXUS_T_TAG    0x09
 540
 541         __le32 _r_a;
 542         u8     flags;
 543 #define SUSPEND_TX     0x80
 544 #define RESUME_TX      0x40
 545 #define SEND_Q         0x04
 546 #define EXEC_Q         0x02
 547 #define NOTINQ         0x01
 548
 549         u8     _r_b[3];
 550         u8     conn_mask;
 551         u8     _r_c[19];
 552         struct ssp_task_iu ssp_task; /* LUN and TAG */
 553         __le16 _r_d;
 554         __le16 conn_handle;
 555         __le64 _r_e;
 556         __le16 index;  /* Transaction context of task to be cleared */
 557         __le16 context;           /* Clear nexus context */
 558         u8     _r_f[44];
 559 } __attribute__ ((packed));
 560
 561 struct initiate_ssp_tmf {
 562         u8     proto_conn_rate;
 563         __le32 _r_a;
 564         struct ssp_frame_hdr ssp_frame;
 565         struct ssp_task_iu ssp_task;
 566         __le16 sister_scb;
 567         __le16 conn_handle;
 568         u8     flags;     /* itnl override and suspend data tx */
 569 #define OVERRIDE_ITNL_TIMER  8
 570
 571         u8     _r_b;
 572         u8     retry_count;
 573         u8     _r_c[5];
 574         __le16 index;  /* Transaction context of task to be queried */
 575         __le16 itnl_to;
 576         u8     _r_d[44];
 577 } __attribute__ ((packed));
 578
 579 /* Transmits an arbitrary primitive on the link.
 580  * Used for NOTIFY and BROADCAST.
 581  */
 582 struct send_prim {
 583         u8     phy_id;
 584         u8     wait_transmit;     /* :0,0 */
 585         u8     xmit_flags;
 586 #define XMTPSIZE_MASK      0xF0
 587 #define XMTPSIZE_SINGLE    0x10
 588 #define XMTPSIZE_REPEATED  0x20
 589 #define XMTPSIZE_CONT      0x20
 590 #define XMTPSIZE_TRIPLE    0x30
 591 #define XMTPSIZE_REDUNDANT 0x60
 592 #define XMTPSIZE_INF       0
 593
 594 #define XMTCONTEN          0x04
 595 #define XMTPFRM            0x02   /* Transmit at the next frame boundary */
 596 #define XMTPIMM            0x01   /* Transmit immediately */
 597
 598         __le16 _r_a;
 599         u8     prim[4];           /* K, D0, D1, D2 */
 600         u8     _r_b[50];
 601         __le16 conn_handle;
 602         u8     _r_c[56];
 603 } __attribute__ ((packed));
 604
 605 /* This describes both SSP Target Get Data and SSP Target Get Data And
 606  * Send Good Response SCBs.  Used when the sequencer is operating in
 607  * target mode...
 608  */
 609 struct ssp_targ_get_data {
 610         u8     proto_conn_rate;
 611         __le32 total_xfer_len;
 612         struct ssp_frame_hdr ssp_frame;
 613         struct xfer_rdy_iu  xfer_rdy;
 614         u8     lun[LUN_SIZE];
 615         __le64 _r_a;
 616         __le16 sister_scb;
 617         __le16 conn_handle;
 618         u8     data_dir;          /* 01b */
 619         u8     _r_b;
 620         u8     retry_count;
 621         u8     _r_c[5];
 622         struct sg_el sg_element[3];
 623 } __attribute__ ((packed));
 624
 625 /* ---------- The actual SCB struct ---------- */
 626
 627 struct scb {
 628         struct scb_header header;
 629         union {
 630                 struct initiate_ssp_task ssp_task;
 631                 struct initiate_ata_task ata_task;
 632                 struct initiate_smp_task smp_task;
 633                 struct control_phy       control_phy;
 634                 struct control_ata_dev   control_ata_dev;
 635                 struct empty_scb         escb;
 636                 struct initiate_link_adm link_adm;
 637                 struct copy_memory       cp_mem;
 638                 struct abort_task        abort_task;
 639                 struct clear_nexus       clear_nexus;
 640                 struct initiate_ssp_tmf  ssp_tmf;
 641         };
 642 } __attribute__ ((packed));
 643
 644 /* ---------- Done List ---------- */
 645 /* The done list entry opcode field is defined below.
 646  * The mnemonic encoding and meaning is as follows:
 647  * TC - Task Complete, status was received and acknowledged
 648  * TF - Task Failed, indicates an error prior to receiving acknowledgment
 649  *   for the command:
 650  *   - no conn,
 651  *   - NACK or R_ERR received in response to this command,
 652  *   - credit blocked or not available, or in the case of SMP request,
 653  *   - no SMP response was received.
 654  *   In these four cases it is known that the target didn't receive the
 655  *   command.
 656  * TI - Task Interrupted, error after the command was acknowledged.  It is
 657  *   known that the command was received by the target.
 658  * TU - Task Unacked, command was transmitted but neither ACK (R_OK) nor NAK
 659  *   (R_ERR) was received due to loss of signal, broken connection, loss of
 660  *   dword sync or other reason.  The application client should send the
 661  *   appropriate task query.
 662  * TA - Task Aborted, see TF.
 663  * _RESP - The completion includes an empty buffer containing status.
 664  * TO - Timeout.
 665  */
 666 #define TC_NO_ERROR             0x00
 667 #define TC_UNDERRUN             0x01
 668 #define TC_OVERRUN              0x02
 669 #define TF_OPEN_TO              0x03
 670 #define TF_OPEN_REJECT          0x04
 671 #define TI_BREAK                0x05
 672 #define TI_PROTO_ERR            0x06
 673 #define TC_SSP_RESP             0x07
 674 #define TI_PHY_DOWN             0x08
 675 #define TF_PHY_DOWN             0x09
 676 #define TC_LINK_ADM_RESP        0x0a
 677 #define TC_CSMI                 0x0b
 678 #define TC_ATA_RESP             0x0c
 679 #define TU_PHY_DOWN             0x0d
 680 #define TU_BREAK                0x0e
 681 #define TI_SATA_TO              0x0f
 682 #define TI_NAK                  0x10
 683 #define TC_CONTROL_PHY          0x11
 684 #define TF_BREAK                0x12
 685 #define TC_RESUME               0x13
 686 #define TI_ACK_NAK_TO           0x14
 687 #define TF_SMPRSP_TO            0x15
 688 #define TF_SMP_XMIT_RCV_ERR     0x16
 689 #define TC_PARTIAL_SG_LIST      0x17
 690 #define TU_ACK_NAK_TO           0x18
 691 #define TU_SATA_TO              0x19
 692 #define TF_NAK_RECV             0x1a
 693 #define TA_I_T_NEXUS_LOSS       0x1b
 694 #define TC_ATA_R_ERR_RECV       0x1c
 695 #define TF_TMF_NO_CTX           0x1d
 696 #define TA_ON_REQ               0x1e
 697 #define TF_TMF_NO_TAG           0x1f
 698 #define TF_TMF_TAG_FREE         0x20
 699 #define TF_TMF_TASK_DONE        0x21
 700 #define TF_TMF_NO_CONN_HANDLE   0x22
 701 #define TC_TASK_CLEARED         0x23
 702 #define TI_SYNCS_RECV           0x24
 703 #define TU_SYNCS_RECV           0x25
 704 #define TF_IRTT_TO              0x26
 705 #define TF_NO_SMP_CONN          0x27
 706 #define TF_IU_SHORT             0x28
 707 #define TF_DATA_OFFS_ERR        0x29
 708 #define TF_INV_CONN_HANDLE      0x2a
 709 #define TF_REQUESTED_N_PENDING  0x2b
 710
 711 /* 0xc1 - 0xc7: empty buffer received,
 712    0xd1 - 0xd7: establish nexus empty buffer received
 713 */
 714 /* This is the ESCB mask */
 715 #define ESCB_RECVD              0xC0
 716
 717
 718 /* This struct done_list_struct defines the done list entry.
 719  * All fields are LE.
 720  */
 721 struct done_list_struct {
 722         __le16 index;             /* aka transaction context */
 723         u8     opcode;
 724         u8     status_block[4];
 725         u8     toggle;            /* bit 0 */
 726 #define DL_TOGGLE_MASK     0x01
 727 } __attribute__ ((packed));
 728
 729 /* ---------- PHYS ---------- */
 730
 731 struct asd_phy {
 732         struct asd_sas_phy        sas_phy;
 733         struct asd_phy_desc   *phy_desc; /* hw profile */
 734
 735         struct sas_identify_frame *identify_frame;
 736         struct asd_dma_tok  *id_frm_tok;
 737         struct asd_port     *asd_port;
 738
 739         u8         frame_rcvd[ASD_EDB_SIZE];
 740 };
 741
 742
 743 #define ASD_SCB_SIZE sizeof(struct scb)
 744 #define ASD_DDB_SIZE sizeof(struct asd_ddb_ssp_smp_target_port)
 745
 746 /* Define this to 0 if you do not want NOTIFY (ENABLE SPINIP) sent.
 747  * Default: 0x10 (it's a mask)
 748  */
 749 #define ASD_NOTIFY_ENABLE_SPINUP  0x10
 750
 751 /* If enabled, set this to the interval between transmission
 752  * of NOTIFY (ENABLE SPINUP). In units of 200 us.
 753  */
 754 #define ASD_NOTIFY_TIMEOUT        2500
 755
 756 /* Initial delay after OOB, before we transmit NOTIFY (ENABLE SPINUP).
 757  * If 0, transmit immediately. In milliseconds.
 758  */
 759 #define ASD_NOTIFY_DOWN_COUNT     0
 760
 761 /* Device present timer timeout constant, 10 ms. */
 762 #define ASD_DEV_PRESENT_TIMEOUT   0x2710
 763
 764 #define ASD_SATA_INTERLOCK_TIMEOUT 0
 765
 766 /* How long to wait before shutting down an STP connection, unless
 767  * an STP target sent frame(s). 50 usec.
 768  * IGNORED by the sequencer (i.e. value 0 always).
 769  */
 770 #define ASD_STP_SHUTDOWN_TIMEOUT  0x0
 771
 772 /* ATA soft reset timer timeout. 5 usec. */
 773 #define ASD_SRST_ASSERT_TIMEOUT   0x05
 774
 775 /* 31 sec */
 776 #define ASD_RCV_FIS_TIMEOUT       0x01D905C0
 777
 778 #define ASD_ONE_MILLISEC_TIMEOUT  0x03e8
 779
 780 /* COMINIT timer */
 781 #define ASD_TEN_MILLISEC_TIMEOUT  0x2710
 782 #define ASD_COMINIT_TIMEOUT ASD_TEN_MILLISEC_TIMEOUT
 783
 784 /* 1 sec */
 785 #define ASD_SMP_RCV_TIMEOUT       0x000F4240
 786
 787 #endif