1/*- 2 * This file is provided under a dual BSD/GPLv2 license. When using or 3 * redistributing this file, you may do so under either license. 4 * 5 * GPL LICENSE SUMMARY 6 * 7 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of version 2 of the GNU General Public License as 11 * published by the Free Software Foundation. 12 * 13 * This program is distributed in the hope that it will be useful, but 14 * WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. 21 * The full GNU General Public License is included in this distribution 22 * in the file called LICENSE.GPL. 23 * 24 * BSD LICENSE 25 * 26 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. 27 * All rights reserved. 28 * 29 * Redistribution and use in source and binary forms, with or without 30 * modification, are permitted provided that the following conditions 31 * are met: 32 * 33 * * Redistributions of source code must retain the above copyright 34 * notice, this list of conditions and the following disclaimer. 35 * * Redistributions in binary form must reproduce the above copyright 36 * notice, this list of conditions and the following disclaimer in 37 * the documentation and/or other materials provided with the 38 * distribution. 39 * 40 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 41 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 42 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 43 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 44 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 46 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 47 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 48 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 49 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 50 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 51 * 52 * $FreeBSD$ 53 */ 54#ifndef _SCU_TASK_CONTEXT_H_ 55#define _SCU_TASK_CONTEXT_H_ 56 57/** 58 * @file 59 * 60 * @brief This file contains the structures and constants for the SCU hardware 61 * task context. 62 */ 63 64#ifdef __cplusplus 65extern "C" { 66#endif // __cplusplus 67 68#include <dev/isci/scil/sci_types.h> 69 70/** 71 * @enum SCU_SSP_TASK_TYPE 72 * 73 * @brief This enumberation defines the various SSP task types the SCU 74 * hardware will accept. 75 * 76 * The definition for the various task types the SCU hardware will accept can 77 * be found in the DS specification. 78 */ 79typedef enum 80{ 81 SCU_TASK_TYPE_IOREAD, ///< IO READ direction or no direction 82 SCU_TASK_TYPE_IOWRITE, ///< IO Write direction 83 SCU_TASK_TYPE_SMP_REQUEST, ///< SMP Request type 84 SCU_TASK_TYPE_RESPONSE, ///< Driver generated response frame (targt mode) 85 SCU_TASK_TYPE_RAW_FRAME, ///< Raw frame request type 86 SCU_TASK_TYPE_PRIMITIVE ///< Request for a primitive to be transmitted 87} SCU_SSP_TASK_TYPE; 88 89/** 90 * @enum SCU_SATA_TASK_TYPE 91 * 92 * @brief This enumeration defines the various SATA task types the SCU 93 * hardware will accept. 94 * 95 * The definition for the various task types the SCU hardware will accept can 96 * be found in the DS specification. 97 */ 98typedef enum 99{ 100 SCU_TASK_TYPE_DMA_IN, ///< Read request 101 SCU_TASK_TYPE_FPDMAQ_READ, ///< NCQ read request 102 SCU_TASK_TYPE_PACKET_DMA_IN, ///< Packet read request 103 SCU_TASK_TYPE_SATA_RAW_FRAME, ///< Raw frame request 104 RESERVED_4, 105 RESERVED_5, 106 RESERVED_6, 107 RESERVED_7, 108 SCU_TASK_TYPE_DMA_OUT, ///< Write request 109 SCU_TASK_TYPE_FPDMAQ_WRITE, ///< NCQ write Request 110 SCU_TASK_TYPE_PACKET_DMA_OUT ///< Packet write request 111} SCU_SATA_TASK_TYPE; 112 113 114/** 115 * @name SCU_CONTEXT_TYPE 116 */ 117/*@{*/ 118#define SCU_TASK_CONTEXT_TYPE 0 119#define SCU_RNC_CONTEXT_TYPE 1 120/*@}*/ 121 122/** 123 * @name SCU_TASK_CONTEXT_VALIDITY 124 */ 125/*@{*/ 126#define SCU_TASK_CONTEXT_INVALID 0 127#define SCU_TASK_CONTEXT_VALID 1 128/*@}*/ 129 130/** 131 * @name SCU_COMMAND_CODE 132 */ 133/*@{*/ 134#define SCU_COMMAND_CODE_INITIATOR_NEW_TASK 0 135#define SCU_COMMAND_CODE_ACTIVE_TASK 1 136#define SCU_COMMAND_CODE_PRIMITIVE_SEQ_TASK 2 137#define SCU_COMMAND_CODE_TARGET_RAW_FRAMES 3 138/*@}*/ 139 140/** 141 * @name SCU_TASK_PRIORITY 142 */ 143/*@{*/ 144/** 145 * This priority is used when there is no priority request for this request. 146 */ 147#define SCU_TASK_PRIORITY_NORMAL 0 148 149/** 150 * This priority indicates that the task should be scheduled to the head 151 * of the queue. The task will NOT be executed if the TX is suspended for 152 * the remote node. 153 */ 154#define SCU_TASK_PRIORITY_HEAD_OF_Q 1 155 156/** 157 * This priority indicates that the task will be executed before all 158 * SCU_TASK_PRIORITY_NORMAL and SCU_TASK_PRIORITY_HEAD_OF_Q tasks. 159 * The task WILL be executed if the TX is suspended for the remote node. 160 */ 161#define SCU_TASK_PRIORITY_HIGH 2 162 163/** 164 * This task priority is reserved and should not be used. 165 */ 166#define SCU_TASK_PRIORITY_RESERVED 3 167/*@}*/ 168 169#define SCU_TASK_INITIATOR_MODE 1 170#define SCU_TASK_TARGET_MODE 0 171 172#define SCU_TASK_REGULAR 0 173#define SCU_TASK_ABORTED 1 174 175//direction bit defintion 176/** 177 * @name SATA_DIRECTION 178 */ 179/*@{*/ 180#define SCU_SATA_WRITE_DATA_DIRECTION 0 181#define SCU_SATA_READ_DATA_DIRECTION 1 182/*@}*/ 183 184/** 185 * @name SCU_COMMAND_CONTEXT_MACROS 186 * 187 * These macros provide the mask and shift operations to construct the various 188 * SCU commands 189 */ 190/*@{*/ 191#define SCU_CONTEXT_COMMAND_REQUEST_TYPE_SHIFT 21UL 192#define SCU_CONTEXT_COMMAND_REQUEST_TYPE_MASK 0x00E00000UL 193#define scu_get_command_request_type(x) \ 194 ((x) & SCU_CONTEXT_COMMAND_REQUEST_TYPE_MASK) 195 196#define SCU_CONTEXT_COMMAND_REQUEST_SUBTYPE_SHIFT 18UL 197#define SCU_CONTEXT_COMMAND_REQUEST_SUBTYPE_MASK 0x001C0000UL 198#define scu_get_command_request_subtype(x) \ 199 ((x) & SCU_CONTEXT_COMMAND_REQUEST_SUBTYPE_MASK) 200 201#define SCU_CONTEXT_COMMAND_REQUEST_FULLTYPE_MASK \ 202 ( \ 203 SCU_CONTEXT_COMMAND_REQUEST_TYPE_MASK \ 204 | SCU_CONTEXT_COMMAND_REQUEST_SUBTYPE_MASK \ 205 ) 206#define scu_get_command_request_full_type(x) \ 207 ((x) & SCU_CONTEXT_COMMAND_REQUEST_FULLTYPE_MASK) 208 209#define SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT 16UL 210#define SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_MASK 0x00010000UL 211#define scu_get_command_protocl_engine_group(x) \ 212 ((x) & SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_MASK) 213 214#define SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT 12UL 215#define SCU_CONTEXT_COMMAND_LOGICAL_PORT_MASK 0x00007000UL 216#define scu_get_command_reqeust_logical_port(x) \ 217 ((x) & SCU_CONTEXT_COMMAND_LOGICAL_PORT_MASK) 218 219 220#define MAKE_SCU_CONTEXT_COMMAND_TYPE(type) \ 221 ((U32)(type) << SCU_CONTEXT_COMMAND_REQUEST_TYPE_SHIFT) 222/*@}*/ 223 224/** 225 * @name SCU_COMMAND_TYPES 226 * 227 * These constants provide the grouping of the different SCU command types. 228 */ 229/*@{*/ 230#define SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC MAKE_SCU_CONTEXT_COMMAND_TYPE(0UL) 231#define SCU_CONTEXT_COMMAND_REQUEST_TYPE_DUMP_TC MAKE_SCU_CONTEXT_COMMAND_TYPE(1UL) 232#define SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_RNC MAKE_SCU_CONTEXT_COMMAND_TYPE(2UL) 233#define SCU_CONTEXT_COMMAND_REQUEST_TYPE_DUMP_RNC MAKE_SCU_CONTEXT_COMMAND_TYPE(3UL) 234#define SCU_CONTEXT_COMMAND_REQUEST_TYPE_OTHER_RNC MAKE_SCU_CONTEXT_COMMAND_TYPE(6UL) 235/*@}*/ 236 237#define MAKE_SCU_CONTEXT_COMMAND_REQUEST(type, command) \ 238 ((type) | (((U32)(command)) << SCU_CONTEXT_COMMAND_REQUEST_SUBTYPE_SHIFT)) 239 240/** 241 * @name SCU_REQUEST_TYPES 242 * 243 * These constants are the various request types that can be posted to the SCU 244 * hardware. 245 */ 246/*@{*/ 247#define SCU_CONTEXT_COMMAND_REQUST_POST_TC \ 248 (MAKE_SCU_CONTEXT_COMMAND_REQUEST(SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC, 0)) 249 250#define SCU_CONTEXT_COMMAND_REQUEST_POST_TC_ABORT \ 251 (MAKE_SCU_CONTEXT_COMMAND_REQUEST(SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC, 1)) 252 253#define SCU_CONTEXT_COMMAND_REQUST_DUMP_TC \ 254 (MAKE_SCU_CONTEXT_COMMAND_REQUEST(SCU_CONTEXT_COMMAND_REQUEST_TYPE_DUMP_TC, 0)) 255 256#define SCU_CONTEXT_COMMAND_POST_RNC_32 \ 257 (MAKE_SCU_CONTEXT_COMMAND_REQUEST(SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_RNC, 0)) 258 259#define SCU_CONTEXT_COMMAND_POST_RNC_96 \ 260 (MAKE_SCU_CONTEXT_COMMAND_REQUEST(SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_RNC, 1)) 261 262#define SCU_CONTEXT_COMMAND_POST_RNC_INVALIDATE \ 263 (MAKE_SCU_CONTEXT_COMMAND_REQUEST(SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_RNC, 2)) 264 265#define SCU_CONTEXT_COMMAND_DUMP_RNC_32 \ 266 (MAKE_SCU_CONTEXT_COMMAND_REQUEST(SCU_CONTEXT_COMMAND_REQUEST_TYPE_DUMP_RNC, 0)) 267 268#define SCU_CONTEXT_COMMAND_DUMP_RNC_96 \ 269 (MAKE_SCU_CONTEXT_COMMAND_REQUEST(SCU_CONTEXT_COMMAND_REQUEST_TYPE_DUMP_RNC, 1)) 270 271#define SCU_CONTEXT_COMMAND_POST_RNC_SUSPEND_TX \ 272 (MAKE_SCU_CONTEXT_COMMAND_REQUEST(SCU_CONTEXT_COMMAND_REQUEST_TYPE_OTHER_RNC, 0)) 273 274#define SCU_CONTEXT_COMMAND_POST_RNC_SUSPEND_TX_RX \ 275 (MAKE_SCU_CONTEXT_COMMAND_REQUEST(SCU_CONTEXT_COMMAND_REQUEST_TYPE_OTHER_RNC, 1)) 276 277#define SCU_CONTEXT_COMMAND_POST_RNC_RESUME \ 278 (MAKE_SCU_CONTEXT_COMMAND_REQUEST(SCU_CONTEXT_COMMAND_REQUEST_TYPE_OTHER_RNC, 2)) 279 280#define SCU_CONTEXT_IT_NEXUS_LOSS_TIMER_ENABLE \ 281 (MAKE_SCU_CONTEXT_COMMAND_REQUEST(SCU_CONTEXT_COMMAND_REQUEST_TYPE_OTHER_RNC, 3)) 282 283#define SCU_CONTEXT_IT_NEXUS_LOSS_TIMER_DISABLE \ 284 (MAKE_SCU_CONTEXT_COMMAND_REQUEST(SCU_CONTEXT_COMMAND_REQUEST_TYPE_OTHER_RNC, 4)) 285/*@}*/ 286 287/** 288 * @name SCU_TASK_CONTEXT_PROTOCOL 289 * SCU Task context protocol types this is uesd to program the SCU Task 290 * context protocol field in word 0x00. 291 */ 292/*@{*/ 293#define SCU_TASK_CONTEXT_PROTOCOL_SMP 0x00 294#define SCU_TASK_CONTEXT_PROTOCOL_SSP 0x01 295#define SCU_TASK_CONTEXT_PROTOCOL_STP 0x02 296#define SCU_TASK_CONTEXT_PROTOCOL_NONE 0x07 297/*@}*/ 298 299/** 300 * @struct SSP_TASK_CONTEXT 301 * 302 * @brief This is the SCU hardware definition for an SSP request. 303 */ 304struct SSP_TASK_CONTEXT 305{ 306 // OFFSET 0x18 307 U32 reserved00 : 24; 308 U32 frame_type : 8; 309 310 // OFFSET 0x1C 311 U32 reserved01; 312 313 // OFFSET 0x20 314 U32 fill_bytes : 2; 315 U32 reserved02 : 6; 316 U32 changing_data_pointer : 1; 317 U32 retransmit : 1; 318 U32 retry_data_frame : 1; 319 U32 tlr_control : 2; 320 U32 reserved03 : 19; 321 322 // OFFSET 0x24 323 U32 uiRsvd4; 324 325 // OFFSET 0x28 326 U32 target_port_transfer_tag : 16; 327 U32 tag : 16; 328 329 // OFFSET 0x2C 330 U32 data_offset; 331}; 332 333/** 334 * @struct STP_TASK_CONTEXT 335 * 336 * @brief This is the SCU hardware definition for an STP request. 337 */ 338struct STP_TASK_CONTEXT 339{ 340 // OFFSET 0x18 341 U32 fis_type : 8; 342 U32 pm_port : 4; 343 U32 reserved0 : 3; 344 U32 control : 1; 345 U32 command : 8; 346 U32 features : 8; 347 348 // OFFSET 0x1C 349 U32 reserved1; 350 351 // OFFSET 0x20 352 U32 reserved2; 353 354 // OFFSET 0x24 355 U32 reserved3; 356 357 // OFFSET 0x28 358 U32 ncq_tag : 5; 359 U32 reserved4 : 27; 360 361 // OFFSET 0x2C 362 U32 data_offset; // TODO: What is this used for? 363}; 364 365/** 366 * @struct SMP_TASK_CONTEXT 367 * 368 * @brief This is the SCU hardware definition for an SMP request. 369 */ 370struct SMP_TASK_CONTEXT 371{ 372 // OFFSET 0x18 373 U32 response_length : 8; 374 U32 function_result : 8; 375 U32 function : 8; 376 U32 frame_type : 8; 377 378 // OFFSET 0x1C 379 U32 smp_response_ufi : 12; 380 U32 reserved1 : 20; 381 382 // OFFSET 0x20 383 U32 reserved2; 384 385 // OFFSET 0x24 386 U32 reserved3; 387 388 // OFFSET 0x28 389 U32 reserved4; 390 391 // OFFSET 0x2C 392 U32 reserved5; 393}; 394 395/** 396 * @struct PRIMITIVE_TASK_CONTEXT 397 * 398 * @brief This is the SCU hardware definition used when the driver wants to 399 * send a primitive on the link. 400 */ 401struct PRIMITIVE_TASK_CONTEXT 402{ 403 // OFFSET 0x18 404 /** 405 * This field is the control word and it must be 0. 406 */ 407 U32 control; ///< must be set to 0 408 409 // OFFSET 0x1C 410 /** 411 * This field specifies the primitive that is to be transmitted. 412 */ 413 U32 sequence; 414 415 // OFFSET 0x20 416 U32 reserved0; 417 418 // OFFSET 0x24 419 U32 reserved1; 420 421 // OFFSET 0x28 422 U32 reserved2; 423 424 // OFFSET 0x2C 425 U32 reserved3; 426}; 427 428/** 429 * @union PROTOCOL_CONTEXT 430 * 431 * @brief The union of the protocols that can be selected in the SCU task 432 * context field. 433 */ 434union PROTOCOL_CONTEXT 435{ 436 struct SSP_TASK_CONTEXT ssp; 437 struct STP_TASK_CONTEXT stp; 438 struct SMP_TASK_CONTEXT smp; 439 struct PRIMITIVE_TASK_CONTEXT primitive; 440 U32 words[6]; 441}; 442 443/** 444 * @struct SCU_SGL_ELEMENT 445 * @typedef SCU_SGL_ELEMENT_T 446 * 447 * @brief This structure represents a single SCU defined SGL element. 448 * 449 * SCU SGLs contain a 64 bit address with the maximum data transfer being 24 450 * bits in size. The SGL can not cross a 4GB boundary. 451 */ 452typedef struct SCU_SGL_ELEMENT 453{ 454 /** 455 * This field is the upper 32 bits of the 64 bit physical address. 456 */ 457 U32 address_upper; 458 459 /** 460 * This field is the lower 32 bits of the 64 bit physical address. 461 */ 462 U32 address_lower; 463 464 /** 465 * This field is the number of bytes to transfer. 466 */ 467 U32 length: 24; 468 469 /** 470 * This field is the address modifier to be used when a virtual function is 471 * requesting a data transfer. 472 */ 473 U32 address_modifier: 8; 474 475} SCU_SGL_ELEMENT_T; 476 477#define SCU_SGL_ELEMENT_PAIR_A 0 478#define SCU_SGL_ELEMENT_PAIR_B 1 479 480/** 481 * @struct SCU_SGL_ELEMENT_PAIR 482 * 483 * @brief This structure is the SCU hardware definition of a pair of SGL 484 * elements. 485 * 486 * The SCU hardware always works on SGL pairs. They are refered to in the DS 487 * specification as SGL A and SGL B. Each SGL pair is followed by the address 488 * of the next pair. 489 */ 490typedef struct SCU_SGL_ELEMENT_PAIR 491{ 492 // OFFSET 0x60-0x68 493 /** 494 * This field is the SGL element A of the SGL pair. 495 */ 496 SCU_SGL_ELEMENT_T A; 497 498 // OFFSET 0x6C-0x74 499 /** 500 * This field is the SGL element B of the SGL pair. 501 */ 502 SCU_SGL_ELEMENT_T B; 503 504 // OFFSET 0x78-0x7C 505 /** 506 * This field is the upper 32 bits of the 64 bit address to the next SGL 507 * element pair. 508 */ 509 U32 next_pair_upper; 510 511 /** 512 * This field is the lower 32 bits of the 64 bit address to the next SGL 513 * element pair. 514 */ 515 U32 next_pair_lower; 516 517} SCU_SGL_ELEMENT_PAIR_T; 518 519/** 520 * @struct TRANSPORT_SNAPSHOT 521 * 522 * @brief This structure is the SCU hardware scratch area for the task 523 * context. 524 * 525 * This is set to 0 by the driver but can be read by issuing a dump TC request 526 * to the SCU. 527 */ 528struct TRANSPORT_SNAPSHOT 529{ 530 // OFFSET 0x48 531 U32 xfer_rdy_write_data_length; 532 533 // OFFSET 0x4C 534 U32 data_offset; 535 536 // OFFSET 0x50 537 U32 data_transfer_size : 24; 538 U32 reserved_50_0 : 8; 539 540 // OFFSET 0x54 541 U32 next_initiator_write_data_offset; 542 543 // OFFSET 0x58 544 U32 next_initiator_write_data_xfer_size : 24; 545 U32 reserved_58_0 : 8; 546}; 547 548/** 549 * @struct SCU_TASK_CONTEXT 550 * 551 * @brief This structure defines the contents of the SCU silicon task context. 552 * It lays out all of the fields according to the expected order and 553 * location for the Storage Controller unit. 554 */ 555typedef struct SCU_TASK_CONTEXT 556{ 557 // OFFSET 0x00 ------ 558 /** 559 * This field must be encoded to one of the valid SCU task priority values 560 * - SCU_TASK_PRIORITY_NORMAL 561 * - SCU_TASK_PRIORITY_HEAD_OF_Q 562 * - SCU_TASK_PRIORITY_HIGH 563 */ 564 U32 priority : 2; 565 566 /** 567 * This field must be set to TRUE if this is an initiator generated request. 568 * Until target mode is supported all task requests are initiator requests. 569 */ 570 U32 initiator_request : 1; 571 572 /** 573 * This field must be set to one of the valid connection rates valid values 574 * are 0x8, 0x9, and 0xA. 575 */ 576 U32 connection_rate : 4; 577 578 /** 579 * This field muse be programed when generating an SMP response since the SMP 580 * connection remains open until the SMP response is generated. 581 */ 582 U32 protocol_engine_index : 3; 583 584 /** 585 * This field must contain the logical port for the task request. 586 */ 587 U32 logical_port_index : 3; 588 589 /** 590 * This field must be set to one of the SCU_TASK_CONTEXT_PROTOCOL values 591 * - SCU_TASK_CONTEXT_PROTOCOL_SMP 592 * - SCU_TASK_CONTEXT_PROTOCOL_SSP 593 * - SCU_TASK_CONTEXT_PROTOCOL_STP 594 * - SCU_TASK_CONTEXT_PROTOCOL_NONE 595 */ 596 U32 protocol_type : 3; 597 598 /** 599 * This filed must be set to the TCi allocated for this task 600 */ 601 U32 task_index : 12; 602 603 /** 604 * This field is reserved and must be set to 0x00 605 */ 606 U32 reserved_00_0 : 1; 607 608 /** 609 * For a normal task request this must be set to 0. If this is an abort of 610 * this task request it must be set to 1. 611 */ 612 U32 abort : 1; 613 614 /** 615 * This field must be set to TRUE for the SCU hardware to process the task. 616 */ 617 U32 valid : 1; 618 619 /** 620 * This field must be set to SCU_TASK_CONTEXT_TYPE 621 */ 622 U32 context_type : 1; 623 624 // OFFSET 0x04 625 /** 626 * This field contains the RNi that is the target of this request. 627 */ 628 U32 remote_node_index : 12; 629 630 /** 631 * This field is programmed if this is a mirrored request, which we are not 632 * using, in which case it is the RNi for the mirrored target. 633 */ 634 U32 mirrored_node_index : 12; 635 636 /** 637 * This field is programmed with the direction of the SATA reqeust 638 * - SCU_SATA_WRITE_DATA_DIRECTION 639 * - SCU_SATA_READ_DATA_DIRECTION 640 */ 641 U32 sata_direction : 1; 642 643 /** 644 * This field is programmsed with one of the following SCU_COMMAND_CODE 645 * - SCU_COMMAND_CODE_INITIATOR_NEW_TASK 646 * - SCU_COMMAND_CODE_ACTIVE_TASK 647 * - SCU_COMMAND_CODE_PRIMITIVE_SEQ_TASK 648 * - SCU_COMMAND_CODE_TARGET_RAW_FRAMES 649 */ 650 U32 command_code : 2; 651 652 /** 653 * This field is set to TRUE if the remote node should be suspended. 654 * This bit is only valid for SSP & SMP target devices. 655 */ 656 U32 suspend_node : 1; 657 658 /** 659 * This field is programmed with one of the following command type codes 660 * 661 * For SAS requests use the SCU_SSP_TASK_TYPE 662 * - SCU_TASK_TYPE_IOREAD 663 * - SCU_TASK_TYPE_IOWRITE 664 * - SCU_TASK_TYPE_SMP_REQUEST 665 * - SCU_TASK_TYPE_RESPONSE 666 * - SCU_TASK_TYPE_RAW_FRAME 667 * - SCU_TASK_TYPE_PRIMITIVE 668 * 669 * For SATA requests use the SCU_SATA_TASK_TYPE 670 * - SCU_TASK_TYPE_DMA_IN 671 * - SCU_TASK_TYPE_FPDMAQ_READ 672 * - SCU_TASK_TYPE_PACKET_DMA_IN 673 * - SCU_TASK_TYPE_SATA_RAW_FRAME 674 * - SCU_TASK_TYPE_DMA_OUT 675 * - SCU_TASK_TYPE_FPDMAQ_WRITE 676 * - SCU_TASK_TYPE_PACKET_DMA_OUT 677 */ 678 U32 task_type : 4; 679 680 // OFFSET 0x08 681 /** 682 * This field is reserved and the must be set to 0x00 683 */ 684 U32 link_layer_control : 8; // presently all reserved 685 686 /** 687 * This field is set to TRUE when TLR is to be enabled 688 */ 689 U32 ssp_tlr_enable : 1; 690 691 /** 692 * This is field specifies if the SCU DMAs a response frame to host 693 * memory for good response frames when operating in target mode. 694 */ 695 U32 dma_ssp_target_good_response : 1; 696 697 /** 698 * This field indicates if the SCU should DMA the response frame to 699 * host memory. 700 */ 701 U32 do_not_dma_ssp_good_response : 1; 702 703 /** 704 * This field is set to TRUE when strict ordering is to be enabled 705 */ 706 U32 strict_ordering : 1; 707 708 /** 709 * This field indicates the type of endianess to be utilized for the 710 * frame. command, task, and response frames utilized control_frame 711 * set to 1. 712 */ 713 U32 control_frame : 1; 714 715 /** 716 * This field is reserved and the driver should set to 0x00 717 */ 718 U32 tl_control_reserved : 3; 719 720 /** 721 * This field is set to TRUE when the SCU hardware task timeout control is to 722 * be enabled 723 */ 724 U32 timeout_enable : 1; 725 726 /** 727 * This field is reserved and the driver should set it to 0x00 728 */ 729 U32 pts_control_reserved : 7; 730 731 /** 732 * This field should be set to TRUE when block guard is to be enabled 733 */ 734 U32 block_guard_enable : 1; 735 736 /** 737 * This field is reserved and the driver should set to 0x00 738 */ 739 U32 sdma_control_reserved : 7; 740 741 // OFFSET 0x0C 742 /** 743 * This field is the address modifier for this io request it should be 744 * programmed with the virtual function that is making the request. 745 */ 746 U32 address_modifier : 16; 747 748 /** 749 * @todo What we support mirrored SMP response frame? 750 */ 751 U32 mirrored_protocol_engine : 3; // mirrored protocol Engine Index 752 753 /** 754 * If this is a mirrored request the logical port index for the mirrored RNi 755 * must be programmed. 756 */ 757 U32 mirrored_logical_port : 4; // mirrored local port index 758 759 /** 760 * This field is reserved and the driver must set it to 0x00 761 */ 762 U32 reserved_0C_0 : 8; 763 764 /** 765 * This field must be set to TRUE if the mirrored request processing is to be 766 * enabled. 767 */ 768 U32 mirror_request_enable : 1; // Mirrored request Enable 769 770 // OFFSET 0x10 771 /** 772 * This field is the command iu length in dwords 773 */ 774 U32 ssp_command_iu_length : 8; 775 776 /** 777 * This is the target TLR enable bit it must be set to 0 when creatning the 778 * task context. 779 */ 780 U32 xfer_ready_tlr_enable : 1; 781 782 /** 783 * This field is reserved and the driver must set it to 0x00 784 */ 785 U32 reserved_10_0 : 7; 786 787 /** 788 * This is the maximum burst size that the SCU hardware will send in one 789 * connection its value is (N x 512) and N must be a multiple of 2. If the 790 * value is 0x00 then maximum burst size is disabled. 791 */ 792 U32 ssp_max_burst_size : 16; 793 794 // OFFSET 0x14 795 /** 796 * This filed is set to the number of bytes to be transfered in the request. 797 */ 798 U32 transfer_length_bytes : 24; // In terms of bytes 799 800 /** 801 * This field is reserved and the driver should set it to 0x00 802 */ 803 U32 reserved_14_0 : 8; 804 805 // OFFSET 0x18-0x2C 806 /** 807 * This union provides for the protocol specif part of the SCU Task Context. 808 */ 809 union PROTOCOL_CONTEXT type; 810 811 // OFFSET 0x30-0x34 812 /** 813 * This field is the upper 32 bits of the 64 bit physical address of the 814 * command iu buffer 815 */ 816 U32 command_iu_upper; 817 818 /** 819 * This field is the lower 32 bits of the 64 bit physical address of the 820 * command iu buffer 821 */ 822 U32 command_iu_lower; 823 824 // OFFSET 0x38-0x3C 825 /** 826 * This field is the upper 32 bits of the 64 bit physical address of the 827 * response iu buffer 828 */ 829 U32 response_iu_upper; 830 831 /** 832 * This field is the lower 32 bits of the 64 bit physical address of the 833 * response iu buffer 834 */ 835 U32 response_iu_lower; 836 837 // OFFSET 0x40 838 /** 839 * This field is set to the task phase of the SCU hardware. The driver must 840 * set this to 0x01 841 */ 842 U32 task_phase : 8; 843 844 /** 845 * This field is set to the transport layer task status. The driver must set 846 * this to 0x00 847 */ 848 U32 task_status : 8; 849 850 /** 851 * This field is used during initiator write TLR 852 */ 853 U32 previous_extended_tag : 4; 854 855 /** 856 * This field is set the maximum number of retries for a STP non-data FIS 857 */ 858 U32 stp_retry_count : 2; 859 860 /** 861 * This field is reserved and the driver must set it to 0x00 862 */ 863 U32 reserved_40_1 : 2; 864 865 /** 866 * This field is used by the SCU TL to determine when to take a snapshot when 867 * tranmitting read data frames. 868 * - 0x00 The entire IO 869 * - 0x01 32k 870 * - 0x02 64k 871 * - 0x04 128k 872 * - 0x08 256k 873 */ 874 U32 ssp_tlr_threshold : 4; 875 876 /** 877 * This field is reserved and the driver must set it to 0x00 878 */ 879 U32 reserved_40_2 : 4; 880 881 // OFFSET 0x44 882 U32 write_data_length; // read only set to 0 883 884 // OFFSET 0x48-0x58 885 struct TRANSPORT_SNAPSHOT snapshot; // read only set to 0 886 887 // OFFSET 0x5C 888 U32 block_protection_enable : 1; 889 U32 block_size : 2; 890 U32 block_protection_function : 2; 891 U32 reserved_5C_0 : 9; 892 U32 active_sgl_element : 2; // read only set to 0 893 U32 sgl_exhausted : 1; // read only set to 0 894 U32 payload_data_transfer_error : 4; // read only set to 0 895 U32 frame_buffer_offset : 11; // read only set to 0 896 897 // OFFSET 0x60-0x7C 898 /** 899 * This field is the first SGL element pair found in the TC data structure. 900 */ 901 SCU_SGL_ELEMENT_PAIR_T sgl_pair_ab; 902 // OFFSET 0x80-0x9C 903 /** 904 * This field is the second SGL element pair found in the TC data structure. 905 */ 906 SCU_SGL_ELEMENT_PAIR_T sgl_pair_cd; 907 908 // OFFSET 0xA0-BC 909 SCU_SGL_ELEMENT_PAIR_T sgl_snapshot_ac; 910 911 // OFFSET 0xC0 912 U32 active_sgl_element_pair; // read only set to 0 913 914 // OFFSET 0xC4-0xCC 915 U32 reserved_C4_CC[3]; 916 917 // OFFSET 0xD0 918 U32 intermediate_crc_value : 16; 919 U32 initial_crc_seed : 16; 920 921 // OFFSET 0xD4 922 U32 application_tag_for_verify : 16; 923 U32 application_tag_for_generate : 16; 924 925 // OFFSET 0xD8 926 U32 reference_tag_seed_for_verify_function; 927 928 // OFFSET 0xDC 929 U32 reserved_DC; 930 931 // OFFSET 0xE0 932 U32 reserved_E0_0 : 16; 933 U32 application_tag_mask_for_generate: 16; 934 935 // OFFSET 0xE4 936 U32 block_protection_control : 16; 937 U32 application_tag_mask_for_verify : 16; 938 939 // OFFSET 0xE8 940 U32 block_protection_error : 8; 941 U32 reserved_E8_0 :24; 942 943 // OFFSET 0xEC 944 U32 reference_tag_seed_for_verify; 945 946 // OFFSET 0xF0 947 U32 intermediate_crc_valid_snapshot : 16; 948 U32 reserved_F0_0 : 16; 949 950 // OFFSET 0xF4 951 U32 reference_tag_seed_for_verify_function_snapshot; 952 953 // OFFSET 0xF8 954 U32 snapshot_of_reserved_dword_DC_of_tc; 955 956 // OFFSET 0xFC 957 U32 reference_tag_seed_for_generate_function_snapshot; 958 959} SCU_TASK_CONTEXT_T; 960 961#ifdef __cplusplus 962} 963#endif // __cplusplus 964 965#endif // _SCU_TASK_CONTEXT_H_ 966