1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause OR GPL-2.0 3 * 4 * This file is provided under a dual BSD/GPLv2 license. When using or 5 * redistributing this file, you may do so under either license. 6 * 7 * GPL LICENSE SUMMARY 8 * 9 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of version 2 of the GNU General Public License as 13 * published by the Free Software Foundation. 14 * 15 * This program is distributed in the hope that it will be useful, but 16 * WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 18 * General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. 23 * The full GNU General Public License is included in this distribution 24 * in the file called LICENSE.GPL. 25 * 26 * BSD LICENSE 27 * 28 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. 29 * All rights reserved. 30 * 31 * Redistribution and use in source and binary forms, with or without 32 * modification, are permitted provided that the following conditions 33 * are met: 34 * 35 * * Redistributions of source code must retain the above copyright 36 * notice, this list of conditions and the following disclaimer. 37 * * Redistributions in binary form must reproduce the above copyright 38 * notice, this list of conditions and the following disclaimer in 39 * the documentation and/or other materials provided with the 40 * distribution. 41 * 42 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 43 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 44 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 45 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 46 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 47 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 48 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 49 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 50 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 51 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 52 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 53 */ 54 55 #include <sys/cdefs.h> 56 __FBSDID("$FreeBSD$"); 57 58 /** 59 * @file 60 * @brief This file contains the method implementations common to 61 * translations that move data (i.e. read, write). It has code for 62 * the various different size CDBs (6, 10, 12, 16). 63 */ 64 65 #include <dev/isci/scil/sati_move.h> 66 #include <dev/isci/scil/sati_callbacks.h> 67 #include <dev/isci/scil/sati_translator_sequence.h> 68 #include <dev/isci/scil/sati_util.h> 69 #include <dev/isci/scil/intel_ata.h> 70 #include <dev/isci/scil/intel_scsi.h> 71 #include <dev/isci/scil/intel_sat.h> 72 73 //****************************************************************************** 74 //* P R I V A T E M E T H O D S 75 //****************************************************************************** 76 77 /** 78 * @brief This method simply sets the command register based upon the 79 * supplied opcodes and the data direction. 80 * For more information on the parameters passed to this method, 81 * please reference sati_translate_command() 82 * 83 * @param[in] write_opcode This parameter specifies the value to be written 84 * to the ATA command register for a write (data out) operation. 85 * @param[in] read_opcode This parameter specifies the value to be written 86 * to the ATA command register for a read (data in) operation. 87 * 88 * @return none. 89 */ 90 static 91 void sati_move_set_ata_command( 92 SATI_TRANSLATOR_SEQUENCE_T * sequence, 93 void * ata_io, 94 U8 write_opcode, 95 U8 read_opcode 96 ) 97 { 98 U8 * register_fis = sati_cb_get_h2d_register_fis_address(ata_io); 99 100 if (sequence->data_direction == SATI_DATA_DIRECTION_OUT) 101 sati_set_ata_command(register_fis, write_opcode); 102 else 103 sati_set_ata_command(register_fis, read_opcode); 104 } 105 106 /** 107 * @brief This method will translate the SCSI transfer count from the 6-byte 108 * CDB into the appropriate amount in the ATA register FIS. Please 109 * note for 48-bit UDMA requests, the caller must set the sector 110 * count extended field. This method also sets protocol and 111 * command fields. 112 * For more information on the parameters passed to this method, 113 * please reference sati_translate_command() 114 * 115 * @param[in] write_opcode This parameter specifies the value to be written 116 * to the ATA command register for a write (data out) operation. 117 * @param[in] read_opcode This parameter specifies the value to be written 118 * to the ATA command register for a read (data in) operation. 119 * 120 * @return none 121 */ 122 static 123 void sati_move_small_udma_translate_command( 124 SATI_TRANSLATOR_SEQUENCE_T * sequence, 125 void * scsi_io, 126 void * ata_io, 127 U8 write_opcode, 128 U8 read_opcode 129 ) 130 { 131 U8 * cdb = sati_cb_get_cdb_address(scsi_io); 132 U8 * register_fis = sati_cb_get_h2d_register_fis_address(ata_io); 133 134 sati_move_set_ata_command(sequence, ata_io, write_opcode, read_opcode); 135 sati_set_ata_sector_count(register_fis, sati_get_cdb_byte(cdb, 4)); 136 137 if (sequence->data_direction == SATI_DATA_DIRECTION_IN) 138 sequence->protocol = SAT_PROTOCOL_UDMA_DATA_IN; 139 else 140 sequence->protocol = SAT_PROTOCOL_UDMA_DATA_OUT; 141 } 142 143 /** 144 * @brief This method will translate the SCSI transfer count from the 145 * supplied sector_count parameter into the ATA register FIS. 146 * The translation is specific to 10,12, 16 byte CDBs. 147 * This method also sets protocol and command fields. 148 * For more information on the parameters passed to this method, 149 * please reference sati_translate_command() 150 * 151 * @param[in] sector_count This parameter specifies the number of sectors 152 * to be transferred. 153 * @param[in] write_opcode This parameter specifies the value to be written 154 * to the ATA command register for a write (data out) operation. 155 * @param[in] read_opcode This parameter specifies the value to be written 156 * to the ATA command register for a read (data in) operation. 157 * 158 * @return Please reference sati_move_set_sector_count() for information 159 * on return codes from this method. 160 */ 161 static 162 SATI_STATUS sati_move_large_udma_translate_command( 163 SATI_TRANSLATOR_SEQUENCE_T * sequence, 164 void * scsi_io, 165 void * ata_io, 166 U32 sector_count, 167 U8 write_opcode, 168 U8 read_opcode 169 ) 170 { 171 sati_move_set_ata_command(sequence, ata_io, write_opcode, read_opcode); 172 173 if (sequence->data_direction == SATI_DATA_DIRECTION_IN) 174 sequence->protocol = SAT_PROTOCOL_UDMA_DATA_IN; 175 else 176 sequence->protocol = SAT_PROTOCOL_UDMA_DATA_OUT; 177 178 return sati_move_set_sector_count( 179 sequence, scsi_io, ata_io, sector_count, FALSE 180 ); 181 } 182 183 /** 184 * @brief This method will translate the SCSI transfer count from the 6-byte 185 * CDB into the appropriate amount in the ATA register FIS. 186 * This is only used for translation of 6-byte SCSI CDBs. 187 * For more information on the parameters passed to this method, 188 * please reference sati_translate_command() 189 * 190 * @return none 191 */ 192 static 193 void sati_move_ncq_translate_8_bit_sector_count( 194 void * scsi_io, 195 void * ata_io 196 ) 197 { 198 U8 * cdb = sati_cb_get_cdb_address(scsi_io); 199 U8 * register_fis = sati_cb_get_h2d_register_fis_address(ata_io); 200 201 sati_set_ata_features(register_fis, sati_get_cdb_byte(cdb, 4)); 202 203 // A read 6 with a 0 sector count indicates a transfer of 256 sectors. 204 // As a result update the MSB (features expanded register) to indicate 205 // 256 sectors (0x100). 206 if (sati_get_cdb_byte(cdb, 4) == 0) 207 sati_set_ata_features_exp(register_fis, 1); 208 } 209 210 //****************************************************************************** 211 //* P U B L I C M E T H O D S 212 //****************************************************************************** 213 214 /** 215 * @brief This method will process a 32-bit sector into the appropriate fields 216 * in a register FIS. This method works for both 8-bit and 16-bit sector 217 * counts. 218 * This is used for translation of 10, 12, and 16-byte SCSI CDBs. 219 * For more information on the parameters passed to this method, 220 * please reference sati_translate_command(). 221 * 222 * @note This method should only be called for CDB sizes of 10-bytes or larger. 223 * 224 * @param[in] sector_count This parameter specifies the number of sectors 225 * to be transferred. 226 * @param[in] is_fpdma_command This parameter indicates if the supplied 227 * ata_io is a first party DMA request (NCQ). 228 * 229 * @return none 230 */ 231 SATI_STATUS sati_move_set_sector_count( 232 SATI_TRANSLATOR_SEQUENCE_T * sequence, 233 void * scsi_io, 234 void * ata_io, 235 U32 sector_count, 236 U8 is_fpdma_command 237 ) 238 { 239 U32 max_sector_count; 240 U8 * register_fis = sati_cb_get_h2d_register_fis_address(ata_io); 241 242 if (sequence->device->capabilities & SATI_DEVICE_CAP_48BIT_ENABLE) 243 max_sector_count = 65536; 244 else 245 max_sector_count = 256; 246 247 // Check the CDB transfer length count and set the register FIS sector 248 // count fields 249 if (0 == sector_count) 250 { 251 // A SCSI sector count of 0 for 10-byte CDBs and larger indicate no data 252 // transfer, so simply complete the command immediately. 253 return SATI_COMPLETE; 254 } 255 else if (sector_count >= max_sector_count) 256 { 257 // We have to perform multiple SATA commands to satisfy the sector 258 // count specified in the SCSI command. 259 sequence->command_specific_data.move_sector_count = 260 sector_count - max_sector_count; 261 262 // In ATA a sector count of 0 indicates use the maximum allowed for 263 // the command (i.e. 0 == 2^16 or 2^8). 264 sector_count = 0; 265 } 266 267 if (is_fpdma_command) 268 { 269 sati_set_ata_features(register_fis, sector_count & 0xFF); 270 sati_set_ata_features_exp(register_fis, (sector_count >> 8) & 0xFF); 271 } 272 else 273 { 274 sati_set_ata_sector_count(register_fis, sector_count & 0xFF); 275 sati_set_ata_sector_count_exp(register_fis, (sector_count >> 8) & 0xFF); 276 } 277 278 return SATI_SUCCESS; 279 } 280 281 /** 282 * @brief This method simply translates the 32-bit logical block address 283 * field from the SCSI CDB (10 or 12-byte) into the ATA task 284 * file (register FIS). 285 * For more information on the parameters passed to this method, 286 * please reference sati_translate_command() 287 * 288 * @return none 289 */ 290 void sati_move_translate_32_bit_lba( 291 SATI_TRANSLATOR_SEQUENCE_T * sequence, 292 void * scsi_io, 293 void * ata_io 294 ) 295 { 296 U8 * cdb = sati_cb_get_cdb_address(scsi_io); 297 U8 * register_fis = sati_cb_get_h2d_register_fis_address(ata_io); 298 299 sati_set_ata_lba_low(register_fis, sati_get_cdb_byte(cdb, 5)); 300 sati_set_ata_lba_mid(register_fis, sati_get_cdb_byte(cdb, 4)); 301 sati_set_ata_lba_high(register_fis, sati_get_cdb_byte(cdb, 3)); 302 sati_set_ata_lba_low_exp(register_fis, sati_get_cdb_byte(cdb, 2)); 303 sati_set_ata_lba_mid_exp(register_fis, 0); 304 sati_set_ata_lba_high_exp(register_fis, 0); 305 } 306 307 /** 308 * @brief This method simply translates the 64-bit logical block address 309 * field from the SCSI CDB (16 byte) into the ATA task 310 * file (register FIS). The 2 most significant bytes must be 0, 311 * since ATA devices can, at most, support 48-bits of LBA. 312 * For more information on the parameters passed to this method, 313 * please reference sati_translate_command() 314 * 315 * @return Indicate if the LBA translation succeeded. 316 * @return SATI_SUCCESS This is returned if translation was successful. 317 * @return SATI_FAILURE_CHECK_RESPONSE_DATA This is returned if either 318 * of the 2 most significant bytes contain a non-zero value. 319 */ 320 SATI_STATUS sati_move_translate_64_bit_lba( 321 SATI_TRANSLATOR_SEQUENCE_T * sequence, 322 void * scsi_io, 323 void * ata_io 324 ) 325 { 326 U8 * cdb = sati_cb_get_cdb_address(scsi_io); 327 U8 * register_fis = sati_cb_get_h2d_register_fis_address(ata_io); 328 329 // Ensure we receive a logical block address that is within range of 330 // addressibility per the ATA specification (i.e. 48-bit or 28-bit). 331 if ( (sati_get_cdb_byte(cdb, 2) == 0) && (sati_get_cdb_byte(cdb, 3) == 0) ) 332 { 333 sati_set_ata_lba_low(register_fis, sati_get_cdb_byte(cdb, 9)); 334 sati_set_ata_lba_mid(register_fis, sati_get_cdb_byte(cdb, 8)); 335 sati_set_ata_lba_high(register_fis, sati_get_cdb_byte(cdb, 7)); 336 sati_set_ata_lba_low_exp(register_fis, sati_get_cdb_byte(cdb, 6)); 337 sati_set_ata_lba_mid_exp(register_fis, sati_get_cdb_byte(cdb, 5)); 338 sati_set_ata_lba_high_exp(register_fis, sati_get_cdb_byte(cdb, 4)); 339 return SATI_SUCCESS; 340 } 341 else 342 { 343 sati_scsi_sense_data_construct( 344 sequence, 345 scsi_io, 346 SCSI_STATUS_CHECK_CONDITION, 347 SCSI_SENSE_ILLEGAL_REQUEST, 348 SCSI_ASC_LBA_OUT_OF_RANGE, 349 SCSI_ASCQ_LBA_OUT_OF_RANGE 350 ); 351 return SATI_FAILURE_CHECK_RESPONSE_DATA; 352 } 353 } 354 355 /** 356 * @brief This method will translate the pieces common to SCSI read and 357 * write 6 byte commands. Depending upon the capabilities 358 * supported by the target different ATA commands can be selected. 359 * For more information on the parameters passed to this method, 360 * please reference sati_translate_command(). 361 * 362 * @return Indicate if the command translation succeeded. 363 * @retval SCI_SUCCESS This is returned if the command translation was 364 * successful. 365 */ 366 SATI_STATUS sati_move_6_translate_command( 367 SATI_TRANSLATOR_SEQUENCE_T * sequence, 368 void * scsi_io, 369 void * ata_io 370 ) 371 { 372 U8 * cdb = sati_cb_get_cdb_address(scsi_io); 373 U8 * register_fis = sati_cb_get_h2d_register_fis_address(ata_io); 374 375 // Translate the logical block address information from the SCSI CDB. 376 // There is only 5 bits of MSB located in byte 1 of the CDB. 377 sati_set_ata_lba_low(register_fis, sati_get_cdb_byte(cdb, 3)); 378 sati_set_ata_lba_mid(register_fis, sati_get_cdb_byte(cdb, 2)); 379 sati_set_ata_lba_high(register_fis, sati_get_cdb_byte(cdb, 1) & 0x1F); 380 381 sati_move_translate_command(sequence, scsi_io, ata_io, 0); 382 383 return SATI_SUCCESS; 384 } 385 386 /** 387 * @brief This method will translate the pieces common to SCSI read and 388 * write 10/12 byte commands. Depending upon the capabilities 389 * supported by the target different ATA commands can be selected. 390 * For more information on the parameters passed to this method, 391 * please reference sati_translate_command(). 392 * 393 * @param[in] device_head This parameter specifies the contents to be 394 * written to the device head register. 395 * 396 * @return Indicate if the command translation succeeded. 397 * @retval SCI_SUCCESS This is returned if the command translation was 398 * successful. 399 */ 400 SATI_STATUS sati_move_32_bit_lba_translate_command( 401 SATI_TRANSLATOR_SEQUENCE_T * sequence, 402 void * scsi_io, 403 void * ata_io, 404 U8 device_head 405 ) 406 { 407 sati_move_translate_32_bit_lba(sequence, scsi_io, ata_io); 408 sati_move_translate_command(sequence, scsi_io, ata_io, device_head); 409 410 return SATI_SUCCESS; 411 } 412 413 /** 414 * @brief This method provides the common translation functionality for 415 * the 6-byte move command descriptor blocks (CDBs). 416 * This method will ensure that the following is performed: 417 * - command register is set 418 * - the SATI_TRANSLATOR_SEQUENCE::protocol field is set 419 * - the sector count field(s) are set 420 * - sati_move_6_translate_command() is invoked. 421 * For more information on the parameters passed to this method, 422 * please reference sati_translate_command(). 423 * 424 * @pre The caller must ensure that the 425 * SATI_TRANSLATOR_SEQUENCE::data_direction field has already been set. 426 * 427 * @return Indicate if the command translation succeeded. 428 * @see sati_move_6_translate_command() for additional return codes. 429 */ 430 SATI_STATUS sati_move_small_translate_command( 431 SATI_TRANSLATOR_SEQUENCE_T * sequence, 432 void * scsi_io, 433 void * ata_io 434 ) 435 { 436 // Translation of the sector count is performed differently for NCQ vs. 437 // other protocols. 438 if (sequence->device->capabilities & SATI_DEVICE_CAP_NCQ_SUPPORTED_ENABLE) 439 { 440 sati_move_set_ata_command( 441 sequence, ata_io, ATA_WRITE_FPDMA, ATA_READ_FPDMA 442 ); 443 sati_move_ncq_translate_8_bit_sector_count(scsi_io, ata_io); 444 sequence->protocol = SAT_PROTOCOL_FPDMA; 445 } 446 else if (sequence->device->capabilities & SATI_DEVICE_CAP_48BIT_ENABLE) 447 { 448 U8 * cdb = sati_cb_get_cdb_address(scsi_io); 449 450 sati_move_small_udma_translate_command( 451 sequence, scsi_io, ata_io, ATA_WRITE_DMA_EXT, ATA_READ_DMA_EXT 452 ); 453 454 // A read/write 6 with a 0 sector count indicates a transfer of 256 455 // sectors. As a result update the MSB (features expanded register) 456 // to indicate 256 sectors (0x100). 457 if (sati_get_cdb_byte(cdb, 4) == 0) 458 { 459 U8 * register_fis = sati_cb_get_h2d_register_fis_address(ata_io); 460 sati_set_ata_sector_count_exp(register_fis, 1); 461 } 462 } 463 else if (sequence->device->capabilities & SATI_DEVICE_CAP_UDMA_ENABLE) 464 { 465 sati_move_small_udma_translate_command( 466 sequence, scsi_io, ata_io, ATA_WRITE_DMA, ATA_READ_DMA 467 ); 468 } 469 else 470 { 471 /** 472 * Currently the translation does not support devices incapable of 473 * handling the 48-bit feature set (i.e. 16 bits of sector count). 474 */ 475 sati_scsi_sense_data_construct( 476 sequence, 477 scsi_io, 478 SCSI_STATUS_CHECK_CONDITION, 479 SCSI_SENSE_ILLEGAL_REQUEST, 480 SCSI_ASC_INVALID_FIELD_IN_CDB, 481 SCSI_ASCQ_INVALID_FIELD_IN_CDB 482 ); 483 return SATI_FAILURE_CHECK_RESPONSE_DATA; 484 } 485 486 return sati_move_6_translate_command(sequence, scsi_io, ata_io); 487 } 488 489 /** 490 * @brief This method provides the common translation functionality for 491 * the larger command descriptor blocks (10, 12, 16-byte CDBs). 492 * For more information on the parameters passed to this method, 493 * please reference sati_translate_command(). 494 * 495 * @param[in] sector_count This parameter specifies the number of sectors 496 * to be transferred. 497 * @param[in] device_head This parameter specifies the contents to be 498 * written to the device head register. 499 * 500 * @return Indicate if the command translation succeeded. 501 * @retval SATI_FAILURE This value is returned if neither NCQ or DMA is 502 * supported by the target device. 503 * @see sati_move_set_sector_count() for additional return codes. 504 */ 505 SATI_STATUS sati_move_large_translate_command( 506 SATI_TRANSLATOR_SEQUENCE_T * sequence, 507 void * scsi_io, 508 void * ata_io, 509 U32 sector_count, 510 U8 * ata_device_head 511 ) 512 { 513 SATI_STATUS status = SATI_SUCCESS; 514 U8 * cdb = sati_cb_get_cdb_address(scsi_io); 515 516 // Parts of translation (e.g. sector count) is performed differently 517 // for NCQ vs. other protocols. 518 if (sequence->device->capabilities & SATI_DEVICE_CAP_NCQ_SUPPORTED_ENABLE) 519 { 520 // if the user did not request to ignore FUA 521 if((sequence->device->capabilities & SATI_DEVICE_CAP_IGNORE_FUA)==0) 522 { 523 // Is the Force Unit Access bit set? 524 if (sati_get_cdb_byte(cdb, 1) & SCSI_MOVE_FUA_BIT_ENABLE) 525 *ata_device_head = ATA_DEV_HEAD_REG_FUA_ENABLE; 526 } 527 528 sati_move_set_ata_command( 529 sequence, ata_io, ATA_WRITE_FPDMA, ATA_READ_FPDMA 530 ); 531 status = sati_move_set_sector_count( 532 sequence, scsi_io, ata_io, sector_count, TRUE 533 ); 534 sequence->protocol = SAT_PROTOCOL_FPDMA; 535 } 536 else if (sequence->device->capabilities & SATI_DEVICE_CAP_48BIT_ENABLE) 537 { 538 // Is the Force Unit Access bit set? If it is, then error. We 539 // aren't supporting this yet for normal DMA. 540 if (sati_get_cdb_byte(cdb, 1) & SCSI_MOVE_FUA_BIT_ENABLE) 541 { 542 sati_scsi_sense_data_construct( 543 sequence, 544 scsi_io, 545 SCSI_STATUS_CHECK_CONDITION, 546 SCSI_SENSE_ILLEGAL_REQUEST, 547 SCSI_ASC_INVALID_FIELD_IN_CDB, 548 SCSI_ASCQ_INVALID_FIELD_IN_CDB 549 ); 550 return SATI_FAILURE_CHECK_RESPONSE_DATA; 551 } 552 553 status = sati_move_large_udma_translate_command( 554 sequence, 555 scsi_io, 556 ata_io, 557 sector_count, 558 ATA_WRITE_DMA_EXT, 559 ATA_READ_DMA_EXT 560 ); 561 } 562 else if (sequence->device->capabilities & SATI_DEVICE_CAP_UDMA_ENABLE) 563 { 564 status = sati_move_large_udma_translate_command( 565 sequence, 566 scsi_io, 567 ata_io, 568 sector_count, 569 ATA_WRITE_DMA, 570 ATA_READ_DMA 571 ); 572 } 573 else 574 { 575 /** 576 * Currently the translation does not support devices incapable of 577 * handling the 48-bit feature set (i.e. 16 bits of sector count). 578 */ 579 sati_scsi_sense_data_construct( 580 sequence, 581 scsi_io, 582 SCSI_STATUS_CHECK_CONDITION, 583 SCSI_SENSE_ILLEGAL_REQUEST, 584 SCSI_ASC_INVALID_FIELD_IN_CDB, 585 SCSI_ASCQ_INVALID_FIELD_IN_CDB 586 ); 587 return SATI_FAILURE_CHECK_RESPONSE_DATA; 588 } 589 590 return status; 591 } 592 593 /** 594 * @brief This method simply performs the functionality common to all 595 * payload data movement translations (i.e. READ/WRITE). 596 * For more information on the parameters passed to this method, 597 * please reference sati_translate_command(). 598 * 599 * @param[in] device_head This parameter specifies the current contents 600 * to be written to the ATA task file (register FIS) device 601 * head register. 602 * 603 * @return none 604 */ 605 void sati_move_translate_command( 606 SATI_TRANSLATOR_SEQUENCE_T * sequence, 607 void * scsi_io, 608 void * ata_io, 609 U8 device_head 610 ) 611 { 612 U8 * register_fis = sati_cb_get_h2d_register_fis_address(ata_io); 613 614 sati_set_ata_device_head( 615 register_fis, device_head | ATA_DEV_HEAD_REG_LBA_MODE_ENABLE 616 ); 617 } 618 619