1 /* 2 * (MPSAFE) 3 * 4 * Copyright (c) 2009 The DragonFly Project. All rights reserved. 5 * 6 * This code is derived from software contributed to The DragonFly Project 7 * by Matthew Dillon <dillon@backplane.com> 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in 17 * the documentation and/or other materials provided with the 18 * distribution. 19 * 3. Neither the name of The DragonFly Project nor the names of its 20 * contributors may be used to endorse or promote products derived 21 * from this software without specific, prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 24 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 26 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 27 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 28 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 29 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 30 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 31 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 32 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 33 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * 37 * Copyright (c) 2007 David Gwynne <dlg@openbsd.org> 38 * 39 * Permission to use, copy, modify, and distribute this software for any 40 * purpose with or without fee is hereby granted, provided that the above 41 * copyright notice and this permission notice appear in all copies. 42 * 43 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 44 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 45 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 46 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 47 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 48 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 49 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 50 * 51 * $OpenBSD: atascsi.c,v 1.64 2009/02/16 21:19:06 miod Exp $ 52 */ 53 /* 54 * Implement each SATA port as its own SCSI bus on CAM. This way we can 55 * implement future port multiplier features as individual devices on the 56 * bus. 57 * 58 * Much of the cdb<->xa conversion code was taken from OpenBSD, the rest 59 * was written natively for DragonFly. 60 * 61 * NOTE-1: I was temporarily unlocking the port while making the CCB 62 * callback, to reduce the chance of a deadlock and to improve 63 * performance by allowing new commands to be queued. 64 * 65 * However, this also creates an opening where another AHCI 66 * interrupt can come in and execute the ahci_port_intr() 67 * function, creating a huge mess in the sequencing of the 68 * chipset. 69 * 70 * So for now we don't do this. XXX 71 */ 72 73 #include "ahci.h" 74 75 static void ahci_xpt_action(struct cam_sim *sim, union ccb *ccb); 76 static void ahci_xpt_poll(struct cam_sim *sim); 77 static void ahci_xpt_scsi_disk_io(struct ahci_port *ap, 78 struct ata_port *at, union ccb *ccb); 79 static void ahci_xpt_scsi_atapi_io(struct ahci_port *ap, 80 struct ata_port *at, union ccb *ccb); 81 static void ahci_xpt_page_inquiry(struct ahci_port *ap, 82 struct ata_port *at, union ccb *ccb); 83 84 static void ahci_ata_complete_disk_rw(struct ata_xfer *xa); 85 static void ahci_ata_complete_disk_synchronize_cache(struct ata_xfer *xa); 86 static void ahci_atapi_complete_cmd(struct ata_xfer *xa); 87 static void ahci_ata_dummy_sense(struct scsi_sense_data *sense_data); 88 static void ahci_ata_atapi_sense(struct ata_fis_d2h *rfis, 89 struct scsi_sense_data *sense_data); 90 91 static int ahci_cam_probe_disk(struct ahci_port *ap, struct ata_port *at); 92 static int ahci_cam_probe_atapi(struct ahci_port *ap, struct ata_port *at); 93 static int ahci_set_xfer(struct ahci_port *ap, struct ata_port *atx); 94 static void ahci_ata_dummy_done(struct ata_xfer *xa); 95 static void ata_fix_identify(struct ata_identify *id); 96 static void ahci_cam_rescan(struct ahci_port *ap); 97 static void ahci_strip_string(const char **basep, int *lenp); 98 99 int 100 ahci_cam_attach(struct ahci_port *ap) 101 { 102 struct cam_devq *devq; 103 struct cam_sim *sim; 104 int error; 105 int unit; 106 107 /* 108 * We want at least one ccb to be available for error processing 109 * so don't let CAM use more then ncmds - 1. 110 */ 111 unit = device_get_unit(ap->ap_sc->sc_dev); 112 if (ap->ap_sc->sc_ncmds > 1) 113 devq = cam_simq_alloc(ap->ap_sc->sc_ncmds - 1); 114 else 115 devq = cam_simq_alloc(ap->ap_sc->sc_ncmds); 116 if (devq == NULL) { 117 return (ENOMEM); 118 } 119 120 /* 121 * Give the devq enough room to run with 32 max_dev_transactions, 122 * but set the overall max tags to 1 until NCQ is negotiated. 123 */ 124 sim = cam_sim_alloc(ahci_xpt_action, ahci_xpt_poll, "ahci", 125 (void *)ap, unit, &ap->ap_sim_lock, 126 32, 1, devq); 127 cam_simq_release(devq); 128 if (sim == NULL) { 129 return (ENOMEM); 130 } 131 ap->ap_sim = sim; 132 ahci_os_unlock_port(ap); 133 lockmgr(&ap->ap_sim_lock, LK_EXCLUSIVE); 134 error = xpt_bus_register(ap->ap_sim, ap->ap_num); 135 lockmgr(&ap->ap_sim_lock, LK_RELEASE); 136 ahci_os_lock_port(ap); 137 if (error != CAM_SUCCESS) { 138 ahci_cam_detach(ap); 139 return (EINVAL); 140 } 141 ap->ap_flags |= AP_F_BUS_REGISTERED; 142 143 if (ap->ap_probe == ATA_PROBE_NEED_IDENT) 144 error = ahci_cam_probe(ap, NULL); 145 else 146 error = 0; 147 if (error) { 148 ahci_cam_detach(ap); 149 return (EIO); 150 } 151 ap->ap_flags |= AP_F_CAM_ATTACHED; 152 153 return(0); 154 } 155 156 /* 157 * The state of the port has changed. 158 * 159 * If atx is NULL the physical port has changed state. 160 * If atx is non-NULL a particular target behind a PM has changed state. 161 * 162 * If found is -1 the target state must be queued to a non-interrupt context. 163 * (only works with at == NULL). 164 * 165 * If found is 0 the target was removed. 166 * If found is 1 the target was inserted. 167 */ 168 void 169 ahci_cam_changed(struct ahci_port *ap, struct ata_port *atx, int found) 170 { 171 struct cam_path *tmppath; 172 int status; 173 int target; 174 175 target = atx ? atx->at_target : CAM_TARGET_WILDCARD; 176 177 if (ap->ap_sim == NULL) 178 return; 179 if (found == CAM_TARGET_WILDCARD) { 180 status = xpt_create_path(&tmppath, NULL, 181 cam_sim_path(ap->ap_sim), 182 target, CAM_LUN_WILDCARD); 183 if (status != CAM_REQ_CMP) 184 return; 185 ahci_cam_rescan(ap); 186 } else { 187 status = xpt_create_path(&tmppath, NULL, 188 cam_sim_path(ap->ap_sim), 189 target, 190 CAM_LUN_WILDCARD); 191 if (status != CAM_REQ_CMP) 192 return; 193 #if 0 194 /* 195 * This confuses CAM 196 */ 197 if (found) 198 xpt_async(AC_FOUND_DEVICE, tmppath, NULL); 199 else 200 xpt_async(AC_LOST_DEVICE, tmppath, NULL); 201 #endif 202 } 203 xpt_free_path(tmppath); 204 } 205 206 void 207 ahci_cam_detach(struct ahci_port *ap) 208 { 209 int error __debugvar; 210 211 if ((ap->ap_flags & AP_F_CAM_ATTACHED) == 0) 212 return; 213 lockmgr(&ap->ap_sim_lock, LK_EXCLUSIVE); 214 if (ap->ap_sim) { 215 xpt_freeze_simq(ap->ap_sim, 1); 216 } 217 if (ap->ap_flags & AP_F_BUS_REGISTERED) { 218 error = xpt_bus_deregister(cam_sim_path(ap->ap_sim)); 219 KKASSERT(error == CAM_REQ_CMP); 220 ap->ap_flags &= ~AP_F_BUS_REGISTERED; 221 } 222 if (ap->ap_sim) { 223 cam_sim_free(ap->ap_sim); 224 ap->ap_sim = NULL; 225 } 226 lockmgr(&ap->ap_sim_lock, LK_RELEASE); 227 ap->ap_flags &= ~AP_F_CAM_ATTACHED; 228 } 229 230 /* 231 * Once the AHCI port has been attached we need to probe for a device or 232 * devices on the port and setup various options. 233 * 234 * If at is NULL we are probing the direct-attached device on the port, 235 * which may or may not be a port multiplier. 236 */ 237 int 238 ahci_cam_probe(struct ahci_port *ap, struct ata_port *atx) 239 { 240 struct ata_port *at; 241 struct ata_xfer *xa; 242 u_int64_t capacity; 243 u_int64_t capacity_bytes; 244 int model_len; 245 int firmware_len; 246 int serial_len; 247 int error; 248 int devncqdepth; 249 int i; 250 const char *model_id; 251 const char *firmware_id; 252 const char *serial_id; 253 const char *wcstr; 254 const char *rastr; 255 const char *scstr; 256 const char *type; 257 258 error = EIO; 259 260 /* 261 * Delayed CAM attachment for initial probe, sim may be NULL 262 */ 263 if (ap->ap_sim == NULL) 264 return(0); 265 266 /* 267 * A NULL atx indicates a probe of the directly connected device. 268 * A non-NULL atx indicates a device connected via a port multiplier. 269 * We need to preserve atx for calls to ahci_ata_get_xfer(). 270 * 271 * at is always non-NULL. For directly connected devices we supply 272 * an (at) pointing to target 0. 273 */ 274 if (atx == NULL) { 275 at = ap->ap_ata[0]; /* direct attached - device 0 */ 276 if (ap->ap_type == ATA_PORT_T_PM) { 277 kprintf("%s: Found Port Multiplier\n", 278 ATANAME(ap, atx)); 279 return (0); 280 } 281 at->at_type = ap->ap_type; 282 } else { 283 at = atx; 284 if (atx->at_type == ATA_PORT_T_PM) { 285 kprintf("%s: Bogus device, reducing port count to %d\n", 286 ATANAME(ap, atx), atx->at_target); 287 if (ap->ap_pmcount > atx->at_target) 288 ap->ap_pmcount = atx->at_target; 289 goto err; 290 } 291 } 292 if (ap->ap_type == ATA_PORT_T_NONE) 293 goto err; 294 if (at->at_type == ATA_PORT_T_NONE) 295 goto err; 296 297 /* 298 * Issue identify, saving the result 299 */ 300 xa = ahci_ata_get_xfer(ap, atx); 301 xa->complete = ahci_ata_dummy_done; 302 xa->data = &at->at_identify; 303 xa->datalen = sizeof(at->at_identify); 304 xa->flags = ATA_F_READ | ATA_F_PIO | ATA_F_POLL; 305 xa->fis->flags = ATA_H2D_FLAGS_CMD | at->at_target; 306 307 switch(at->at_type) { 308 case ATA_PORT_T_DISK: 309 xa->fis->command = ATA_C_IDENTIFY; 310 type = "DISK"; 311 break; 312 case ATA_PORT_T_ATAPI: 313 xa->fis->command = ATA_C_ATAPI_IDENTIFY; 314 xa->flags |= ATA_F_AUTOSENSE; 315 type = "ATAPI"; 316 break; 317 default: 318 xa->fis->command = ATA_C_ATAPI_IDENTIFY; 319 type = "UNKNOWN(ATAPI?)"; 320 break; 321 } 322 xa->fis->features = 0; 323 xa->fis->device = 0; 324 xa->timeout = 1000; 325 326 if (ahci_ata_cmd(xa) != ATA_S_COMPLETE) { 327 kprintf("%s: Detected %s device but unable to IDENTIFY\n", 328 ATANAME(ap, atx), type); 329 ahci_ata_put_xfer(xa); 330 goto err; 331 } 332 ahci_ata_put_xfer(xa); 333 334 ata_fix_identify(&at->at_identify); 335 336 if (at->at_type == ATA_PORT_T_DISK && at->at_identify.nomrota_rate == 1) 337 type = "SSD"; 338 339 /* 340 * Read capacity using SATA probe info. 341 */ 342 if (le16toh(at->at_identify.cmdset83) & 0x0400) { 343 /* LBA48 feature set supported */ 344 capacity = 0; 345 for (i = 3; i >= 0; --i) { 346 capacity <<= 16; 347 capacity += 348 le16toh(at->at_identify.addrsecxt[i]); 349 } 350 } else { 351 capacity = le16toh(at->at_identify.addrsec[1]); 352 capacity <<= 16; 353 capacity += le16toh(at->at_identify.addrsec[0]); 354 } 355 if (capacity == 0) 356 capacity = 1024 * 1024 / 512; 357 at->at_capacity = capacity; 358 if (atx == NULL) 359 ap->ap_probe = ATA_PROBE_GOOD; 360 361 capacity_bytes = capacity * 512; 362 363 /* 364 * Negotiate NCQ, throw away any ata_xfer's beyond the negotiated 365 * number of slots and limit the number of CAM ccb's to one less 366 * so we always have a slot available for recovery. 367 * 368 * NCQ is not used if ap_ncqdepth is 1 or the host controller does 369 * not support it, and in that case the driver can handle extra 370 * ccb's. 371 * 372 * NCQ is currently used only with direct-attached disks. It is 373 * not used with port multipliers or direct-attached ATAPI devices. 374 * 375 * Remember at least one extra CCB needs to be reserved for the 376 * error ccb. 377 */ 378 if ((ap->ap_sc->sc_cap & AHCI_REG_CAP_SNCQ) && 379 ap->ap_type == ATA_PORT_T_DISK && 380 (le16toh(at->at_identify.satacap) & (1 << 8))) { 381 at->at_ncqdepth = (le16toh(at->at_identify.qdepth) & 0x1F) + 1; 382 devncqdepth = at->at_ncqdepth; 383 if (at->at_ncqdepth > ap->ap_sc->sc_ncmds) 384 at->at_ncqdepth = ap->ap_sc->sc_ncmds; 385 if (at->at_ncqdepth > 1) { 386 for (i = 0; i < ap->ap_sc->sc_ncmds; ++i) { 387 xa = ahci_ata_get_xfer(ap, atx); 388 if (xa->tag < at->at_ncqdepth) { 389 xa->state = ATA_S_COMPLETE; 390 ahci_ata_put_xfer(xa); 391 } 392 } 393 if (at->at_ncqdepth >= ap->ap_sc->sc_ncmds) { 394 cam_sim_set_max_tags(ap->ap_sim, 395 at->at_ncqdepth - 1); 396 } 397 } 398 } else { 399 devncqdepth = 0; 400 } 401 402 model_len = sizeof(at->at_identify.model); 403 model_id = at->at_identify.model; 404 ahci_strip_string(&model_id, &model_len); 405 406 firmware_len = sizeof(at->at_identify.firmware); 407 firmware_id = at->at_identify.firmware; 408 ahci_strip_string(&firmware_id, &firmware_len); 409 410 serial_len = sizeof(at->at_identify.serial); 411 serial_id = at->at_identify.serial; 412 ahci_strip_string(&serial_id, &serial_len); 413 414 /* 415 * Generate informatiive strings. 416 * 417 * NOTE: We do not automatically set write caching, lookahead, 418 * or the security state for ATAPI devices. 419 */ 420 if (at->at_identify.cmdset82 & ATA_IDENTIFY_WRITECACHE) { 421 if (at->at_identify.features85 & ATA_IDENTIFY_WRITECACHE) 422 wcstr = "enabled"; 423 else if (at->at_type == ATA_PORT_T_ATAPI) 424 wcstr = "disabled"; 425 else 426 wcstr = "enabling"; 427 } else { 428 wcstr = "notsupp"; 429 } 430 431 if (at->at_identify.cmdset82 & ATA_IDENTIFY_LOOKAHEAD) { 432 if (at->at_identify.features85 & ATA_IDENTIFY_LOOKAHEAD) 433 rastr = "enabled"; 434 else if (at->at_type == ATA_PORT_T_ATAPI) 435 rastr = "disabled"; 436 else 437 rastr = "enabling"; 438 } else { 439 rastr = "notsupp"; 440 } 441 442 if (at->at_identify.cmdset82 & ATA_IDENTIFY_SECURITY) { 443 if (at->at_identify.securestatus & ATA_SECURE_FROZEN) 444 scstr = "frozen"; 445 else if (at->at_type == ATA_PORT_T_ATAPI) 446 scstr = "unfrozen"; 447 else if (AhciNoFeatures & (1 << ap->ap_num)) 448 scstr = "<disabled>"; 449 else 450 scstr = "freezing"; 451 } else { 452 scstr = "notsupp"; 453 } 454 455 kprintf("%s: Found %s \"%*.*s %*.*s\" serial=\"%*.*s\"\n" 456 "%s: tags=%d/%d satacap=%04x satacap2=%04x satafea=%04x NCQ=%s " 457 "capacity=%lld.%02dMB\n", 458 459 ATANAME(ap, atx), 460 type, 461 model_len, model_len, model_id, 462 firmware_len, firmware_len, firmware_id, 463 serial_len, serial_len, serial_id, 464 465 ATANAME(ap, atx), 466 devncqdepth, ap->ap_sc->sc_ncmds, 467 at->at_identify.satacap, 468 at->at_identify.satacap2, 469 at->at_identify.satafsup, 470 (at->at_ncqdepth > 1 ? "YES" : "NO"), 471 (long long)capacity_bytes / (1024 * 1024), 472 (int)(capacity_bytes % (1024 * 1024)) * 100 / (1024 * 1024) 473 ); 474 kprintf("%s: f85=%04x f86=%04x f87=%04x WC=%s RA=%s SEC=%s\n", 475 ATANAME(ap, atx), 476 at->at_identify.features85, 477 at->at_identify.features86, 478 at->at_identify.features87, 479 wcstr, 480 rastr, 481 scstr 482 ); 483 484 /* 485 * Additional type-specific probing 486 */ 487 switch(at->at_type) { 488 case ATA_PORT_T_DISK: 489 error = ahci_cam_probe_disk(ap, atx); 490 break; 491 case ATA_PORT_T_ATAPI: 492 error = ahci_cam_probe_atapi(ap, atx); 493 break; 494 default: 495 error = EIO; 496 break; 497 } 498 err: 499 if (error) { 500 at->at_probe = ATA_PROBE_FAILED; 501 if (atx == NULL) 502 ap->ap_probe = at->at_probe; 503 } else { 504 at->at_probe = ATA_PROBE_GOOD; 505 if (atx == NULL) 506 ap->ap_probe = at->at_probe; 507 } 508 return (error); 509 } 510 511 /* 512 * DISK-specific probe after initial ident 513 */ 514 static int 515 ahci_cam_probe_disk(struct ahci_port *ap, struct ata_port *atx) 516 { 517 struct ata_port *at; 518 struct ata_xfer *xa; 519 520 at = atx ? atx : ap->ap_ata[0]; 521 522 /* 523 * Set dummy xfer mode 524 */ 525 ahci_set_xfer(ap, atx); 526 527 /* 528 * Enable write cache if supported 529 * 530 * NOTE: "WD My Book" external disk devices have a very poor 531 * daughter board between the the ESATA and the HD. Sending 532 * any ATA_C_SET_FEATURES commands will break the hardware port 533 * with a fatal protocol error. However, this device also 534 * indicates that WRITECACHE is already on and READAHEAD is 535 * not supported so we avoid the issue. 536 */ 537 if ((at->at_identify.cmdset82 & ATA_IDENTIFY_WRITECACHE) && 538 (at->at_identify.features85 & ATA_IDENTIFY_WRITECACHE) == 0) { 539 xa = ahci_ata_get_xfer(ap, atx); 540 xa->complete = ahci_ata_dummy_done; 541 xa->fis->command = ATA_C_SET_FEATURES; 542 xa->fis->features = ATA_SF_WRITECACHE_EN; 543 /* xa->fis->features = ATA_SF_LOOKAHEAD_EN; */ 544 xa->fis->flags = ATA_H2D_FLAGS_CMD | at->at_target; 545 xa->fis->device = 0; 546 xa->flags = ATA_F_PIO | ATA_F_POLL; 547 xa->timeout = 1000; 548 xa->datalen = 0; 549 if (ahci_ata_cmd(xa) == ATA_S_COMPLETE) 550 at->at_features |= ATA_PORT_F_WCACHE; 551 else 552 kprintf("%s: Unable to enable write-caching\n", 553 ATANAME(ap, atx)); 554 ahci_ata_put_xfer(xa); 555 } 556 557 /* 558 * Enable readahead if supported 559 */ 560 if ((at->at_identify.cmdset82 & ATA_IDENTIFY_LOOKAHEAD) && 561 (at->at_identify.features85 & ATA_IDENTIFY_LOOKAHEAD) == 0) { 562 xa = ahci_ata_get_xfer(ap, atx); 563 xa->complete = ahci_ata_dummy_done; 564 xa->fis->command = ATA_C_SET_FEATURES; 565 xa->fis->features = ATA_SF_LOOKAHEAD_EN; 566 xa->fis->flags = ATA_H2D_FLAGS_CMD | at->at_target; 567 xa->fis->device = 0; 568 xa->flags = ATA_F_PIO | ATA_F_POLL; 569 xa->timeout = 1000; 570 xa->datalen = 0; 571 if (ahci_ata_cmd(xa) == ATA_S_COMPLETE) 572 at->at_features |= ATA_PORT_F_RAHEAD; 573 else 574 kprintf("%s: Unable to enable read-ahead\n", 575 ATANAME(ap, atx)); 576 ahci_ata_put_xfer(xa); 577 } 578 579 /* 580 * FREEZE LOCK the device so malicious users can't lock it on us. 581 * As there is no harm in issuing this to devices that don't 582 * support the security feature set we just send it, and don't bother 583 * checking if the device sends a command abort to tell us it doesn't 584 * support it 585 */ 586 if ((at->at_identify.cmdset82 & ATA_IDENTIFY_SECURITY) && 587 (at->at_identify.securestatus & ATA_SECURE_FROZEN) == 0 && 588 (AhciNoFeatures & (1 << ap->ap_num)) == 0) { 589 xa = ahci_ata_get_xfer(ap, atx); 590 xa->complete = ahci_ata_dummy_done; 591 xa->fis->command = ATA_C_SEC_FREEZE_LOCK; 592 xa->fis->flags = ATA_H2D_FLAGS_CMD | at->at_target; 593 xa->flags = ATA_F_PIO | ATA_F_POLL; 594 xa->timeout = 1000; 595 xa->datalen = 0; 596 if (ahci_ata_cmd(xa) == ATA_S_COMPLETE) 597 at->at_features |= ATA_PORT_F_FRZLCK; 598 else 599 kprintf("%s: Unable to set security freeze\n", 600 ATANAME(ap, atx)); 601 ahci_ata_put_xfer(xa); 602 } 603 604 return (0); 605 } 606 607 /* 608 * ATAPI-specific probe after initial ident 609 */ 610 static int 611 ahci_cam_probe_atapi(struct ahci_port *ap, struct ata_port *atx) 612 { 613 ahci_set_xfer(ap, atx); 614 return(0); 615 } 616 617 /* 618 * Setting the transfer mode is irrelevant for the SATA transport 619 * but some (atapi) devices seem to need it anyway. In addition 620 * if we are running through a SATA->PATA converter for some reason 621 * beyond my comprehension we might have to set the mode. 622 * 623 * We only support DMA modes for SATA attached devices, so don't bother 624 * with legacy modes. 625 */ 626 static int 627 ahci_set_xfer(struct ahci_port *ap, struct ata_port *atx) 628 { 629 struct ata_port *at; 630 struct ata_xfer *xa; 631 u_int16_t mode; 632 u_int16_t mask; 633 634 at = atx ? atx : ap->ap_ata[0]; 635 636 /* 637 * Figure out the supported UDMA mode. Ignore other legacy modes. 638 */ 639 mask = le16toh(at->at_identify.ultradma); 640 if ((mask & 0xFF) == 0 || mask == 0xFFFF) 641 return(0); 642 mask &= 0xFF; 643 mode = 0x4F; 644 while ((mask & 0x8000) == 0) { 645 mask <<= 1; 646 --mode; 647 } 648 649 /* 650 * SATA atapi devices often still report a dma mode, even though 651 * it is irrelevant for SATA transport. It is also possible that 652 * we are running through a SATA->PATA converter and seeing the 653 * PATA dma mode. 654 * 655 * In this case the device may require a (dummy) SETXFER to be 656 * sent before it will work properly. 657 */ 658 xa = ahci_ata_get_xfer(ap, atx); 659 xa->complete = ahci_ata_dummy_done; 660 xa->fis->command = ATA_C_SET_FEATURES; 661 xa->fis->features = ATA_SF_SETXFER; 662 xa->fis->flags = ATA_H2D_FLAGS_CMD | at->at_target; 663 xa->fis->sector_count = mode; 664 xa->flags = ATA_F_PIO | ATA_F_POLL; 665 xa->timeout = 1000; 666 xa->datalen = 0; 667 if (ahci_ata_cmd(xa) != ATA_S_COMPLETE) { 668 kprintf("%s: Unable to set dummy xfer mode \n", 669 ATANAME(ap, atx)); 670 } else if (bootverbose) { 671 kprintf("%s: Set dummy xfer mode to %02x\n", 672 ATANAME(ap, atx), mode); 673 } 674 ahci_ata_put_xfer(xa); 675 return(0); 676 } 677 678 /* 679 * Fix byte ordering so buffers can be accessed as 680 * strings. 681 */ 682 static void 683 ata_fix_identify(struct ata_identify *id) 684 { 685 u_int16_t *swap; 686 int i; 687 688 swap = (u_int16_t *)id->serial; 689 for (i = 0; i < sizeof(id->serial) / sizeof(u_int16_t); i++) 690 swap[i] = bswap16(swap[i]); 691 692 swap = (u_int16_t *)id->firmware; 693 for (i = 0; i < sizeof(id->firmware) / sizeof(u_int16_t); i++) 694 swap[i] = bswap16(swap[i]); 695 696 swap = (u_int16_t *)id->model; 697 for (i = 0; i < sizeof(id->model) / sizeof(u_int16_t); i++) 698 swap[i] = bswap16(swap[i]); 699 } 700 701 /* 702 * Dummy done callback for xa. 703 */ 704 static void 705 ahci_ata_dummy_done(struct ata_xfer *xa) 706 { 707 } 708 709 /* 710 * Use an engineering request to initiate a target scan for devices 711 * behind a port multiplier. 712 * 713 * An asynchronous bus scan is used to avoid reentrancy issues. 714 */ 715 static void 716 ahci_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb) 717 { 718 struct ahci_port *ap = ccb->ccb_h.sim_priv.entries[0].ptr; 719 720 if (ccb->ccb_h.func_code == XPT_SCAN_BUS) { 721 ap->ap_flags &= ~AP_F_SCAN_RUNNING; 722 if (ap->ap_flags & AP_F_SCAN_REQUESTED) { 723 ap->ap_flags &= ~AP_F_SCAN_REQUESTED; 724 ahci_cam_rescan(ap); 725 } 726 ap->ap_flags |= AP_F_SCAN_COMPLETED; 727 wakeup(&ap->ap_flags); 728 } 729 xpt_free_ccb(&ccb->ccb_h); 730 } 731 732 static void 733 ahci_cam_rescan(struct ahci_port *ap) 734 { 735 struct cam_path *path; 736 union ccb *ccb; 737 int status; 738 int i; 739 740 if (ap->ap_flags & AP_F_SCAN_RUNNING) { 741 ap->ap_flags |= AP_F_SCAN_REQUESTED; 742 return; 743 } 744 ap->ap_flags |= AP_F_SCAN_RUNNING; 745 for (i = 0; i < AHCI_MAX_PMPORTS; ++i) { 746 ap->ap_ata[i]->at_features |= ATA_PORT_F_RESCAN; 747 } 748 749 status = xpt_create_path(&path, xpt_periph, cam_sim_path(ap->ap_sim), 750 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); 751 if (status != CAM_REQ_CMP) 752 return; 753 754 ccb = xpt_alloc_ccb(); 755 xpt_setup_ccb(&ccb->ccb_h, path, 5); /* 5 = low priority */ 756 ccb->ccb_h.func_code = XPT_ENG_EXEC; 757 ccb->ccb_h.cbfcnp = ahci_cam_rescan_callback; 758 ccb->ccb_h.sim_priv.entries[0].ptr = ap; 759 ccb->crcn.flags = CAM_FLAG_NONE; 760 xpt_action_async(ccb); 761 } 762 763 static void 764 ahci_xpt_rescan(struct ahci_port *ap) 765 { 766 struct cam_path *path; 767 union ccb *ccb; 768 int status; 769 770 status = xpt_create_path(&path, xpt_periph, cam_sim_path(ap->ap_sim), 771 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); 772 if (status != CAM_REQ_CMP) 773 return; 774 775 ccb = xpt_alloc_ccb(); 776 xpt_setup_ccb(&ccb->ccb_h, path, 5); /* 5 = low priority */ 777 ccb->ccb_h.func_code = XPT_SCAN_BUS; 778 ccb->ccb_h.cbfcnp = ahci_cam_rescan_callback; 779 ccb->ccb_h.sim_priv.entries[0].ptr = ap; 780 ccb->crcn.flags = CAM_FLAG_NONE; 781 xpt_action_async(ccb); 782 } 783 784 /* 785 * Action function - dispatch command 786 */ 787 static 788 void 789 ahci_xpt_action(struct cam_sim *sim, union ccb *ccb) 790 { 791 struct ahci_port *ap; 792 struct ata_port *at, *atx; 793 struct ccb_hdr *ccbh; 794 795 /* XXX lock */ 796 ap = cam_sim_softc(sim); 797 atx = NULL; 798 KKASSERT(ap != NULL); 799 ccbh = &ccb->ccb_h; 800 801 /* 802 * Early failure checks. These checks do not apply to XPT_PATH_INQ, 803 * otherwise the bus rescan will not remove the dead devices when 804 * unplugging a PM. 805 * 806 * For non-wildcards we have one target (0) and one lun (0), 807 * unless we have a port multiplier. 808 * 809 * A wildcard target indicates only the general bus is being 810 * probed. 811 * 812 * Calculate at and atx. at is always non-NULL. atx is only 813 * NULL for direct-attached devices. It will be non-NULL for 814 * devices behind a port multiplier. 815 * 816 * XXX What do we do with a LUN wildcard? 817 */ 818 if (ccbh->target_id != CAM_TARGET_WILDCARD && 819 ccbh->func_code != XPT_PATH_INQ) { 820 if (ap->ap_type == ATA_PORT_T_NONE) { 821 ccbh->status = CAM_DEV_NOT_THERE; 822 xpt_done(ccb); 823 return; 824 } 825 if (ccbh->target_id < 0 || ccbh->target_id >= ap->ap_pmcount) { 826 ccbh->status = CAM_DEV_NOT_THERE; 827 xpt_done(ccb); 828 return; 829 } 830 at = ap->ap_ata[ccbh->target_id]; 831 if (ap->ap_type == ATA_PORT_T_PM) 832 atx = at; 833 834 if (ccbh->target_lun != CAM_LUN_WILDCARD && ccbh->target_lun) { 835 ccbh->status = CAM_DEV_NOT_THERE; 836 xpt_done(ccb); 837 return; 838 } 839 } else { 840 at = ap->ap_ata[0]; 841 } 842 843 /* 844 * Switch on the meta XPT command 845 */ 846 switch(ccbh->func_code) { 847 case XPT_ENG_EXEC: 848 /* 849 * This routine is called after a port multiplier has been 850 * probed. 851 */ 852 ccbh->status = CAM_REQ_CMP; 853 ahci_os_lock_port(ap); 854 ahci_port_state_machine(ap, 0); 855 ahci_os_unlock_port(ap); 856 xpt_done(ccb); 857 ahci_xpt_rescan(ap); 858 break; 859 case XPT_PATH_INQ: 860 /* 861 * This command always succeeds, otherwise the bus scan 862 * will not detach dead devices. 863 */ 864 ccb->cpi.version_num = 1; 865 ccb->cpi.hba_inquiry = 0; 866 ccb->cpi.target_sprt = 0; 867 ccb->cpi.hba_misc = PIM_SEQSCAN; 868 ccb->cpi.hba_eng_cnt = 0; 869 bzero(ccb->cpi.vuhba_flags, sizeof(ccb->cpi.vuhba_flags)); 870 ccb->cpi.max_target = AHCI_MAX_PMPORTS - 1; 871 ccb->cpi.max_lun = 0; 872 ccb->cpi.async_flags = 0; 873 ccb->cpi.hpath_id = 0; 874 ccb->cpi.initiator_id = AHCI_MAX_PMPORTS - 1; 875 ccb->cpi.unit_number = cam_sim_unit(sim); 876 ccb->cpi.bus_id = cam_sim_bus(sim); 877 ccb->cpi.base_transfer_speed = 150000; 878 ccb->cpi.transport = XPORT_SATA; 879 ccb->cpi.transport_version = 1; 880 ccb->cpi.protocol = PROTO_SCSI; 881 ccb->cpi.protocol_version = SCSI_REV_2; 882 ccb->cpi.maxio = AHCI_MAXPHYS; 883 884 ccbh->status = CAM_REQ_CMP; 885 if (ccbh->target_id == CAM_TARGET_WILDCARD) { 886 ahci_os_lock_port(ap); 887 ahci_port_state_machine(ap, 0); 888 ahci_os_unlock_port(ap); 889 } else { 890 switch(ahci_pread(ap, AHCI_PREG_SSTS) & 891 AHCI_PREG_SSTS_SPD) { 892 case AHCI_PREG_SSTS_SPD_GEN1: 893 ccb->cpi.base_transfer_speed = 150000; 894 break; 895 case AHCI_PREG_SSTS_SPD_GEN2: 896 ccb->cpi.base_transfer_speed = 300000; 897 break; 898 case AHCI_PREG_SSTS_SPD_GEN3: 899 ccb->cpi.base_transfer_speed = 600000; 900 break; 901 default: 902 /* unknown */ 903 ccb->cpi.base_transfer_speed = 1000; 904 break; 905 } 906 #if 0 907 if (ap->ap_type == ATA_PORT_T_NONE) 908 ccbh->status = CAM_DEV_NOT_THERE; 909 #endif 910 } 911 xpt_done(ccb); 912 break; 913 case XPT_RESET_DEV: 914 ahci_os_lock_port(ap); 915 if (ap->ap_type == ATA_PORT_T_NONE) { 916 ccbh->status = CAM_DEV_NOT_THERE; 917 } else { 918 ahci_port_reset(ap, atx, 0); 919 ccbh->status = CAM_REQ_CMP; 920 } 921 ahci_os_unlock_port(ap); 922 xpt_done(ccb); 923 break; 924 case XPT_RESET_BUS: 925 ahci_os_lock_port(ap); 926 ahci_port_reset(ap, NULL, 1); 927 ahci_os_unlock_port(ap); 928 ccbh->status = CAM_REQ_CMP; 929 xpt_done(ccb); 930 break; 931 case XPT_SET_TRAN_SETTINGS: 932 ccbh->status = CAM_FUNC_NOTAVAIL; 933 xpt_done(ccb); 934 break; 935 case XPT_GET_TRAN_SETTINGS: 936 ccb->cts.protocol = PROTO_SCSI; 937 ccb->cts.protocol_version = SCSI_REV_2; 938 ccb->cts.transport = XPORT_SATA; 939 ccb->cts.transport_version = XPORT_VERSION_UNSPECIFIED; 940 ccb->cts.proto_specific.valid = 0; 941 ccb->cts.xport_specific.valid = 0; 942 ccbh->status = CAM_REQ_CMP; 943 xpt_done(ccb); 944 break; 945 case XPT_CALC_GEOMETRY: 946 cam_calc_geometry(&ccb->ccg, 1); 947 xpt_done(ccb); 948 break; 949 case XPT_SCSI_IO: 950 /* 951 * Our parallel startup code might have only probed through 952 * to the IDENT, so do the last step if necessary. 953 */ 954 if (at->at_probe == ATA_PROBE_NEED_IDENT) 955 ahci_cam_probe(ap, atx); 956 if (at->at_probe != ATA_PROBE_GOOD) { 957 ccbh->status = CAM_DEV_NOT_THERE; 958 xpt_done(ccb); 959 break; 960 } 961 switch(at->at_type) { 962 case ATA_PORT_T_DISK: 963 ahci_xpt_scsi_disk_io(ap, atx, ccb); 964 break; 965 case ATA_PORT_T_ATAPI: 966 ahci_xpt_scsi_atapi_io(ap, atx, ccb); 967 break; 968 default: 969 ccbh->status = CAM_REQ_INVALID; 970 xpt_done(ccb); 971 break; 972 } 973 break; 974 case XPT_TRIM: 975 { 976 scsi_cdb_t cdb; 977 struct ccb_scsiio *csio; 978 csio = &ccb->csio; 979 cdb = (void *)((ccbh->flags & CAM_CDB_POINTER) ? 980 csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes); 981 cdb->generic.opcode = TRIM; 982 ahci_xpt_scsi_disk_io(ap, atx, ccb); 983 break; 984 } 985 default: 986 ccbh->status = CAM_REQ_INVALID; 987 xpt_done(ccb); 988 break; 989 } 990 } 991 992 /* 993 * Poll function. 994 * 995 * Generally this function gets called heavily when interrupts might be 996 * non-operational, during a halt/reboot or panic. 997 */ 998 static 999 void 1000 ahci_xpt_poll(struct cam_sim *sim) 1001 { 1002 struct ahci_port *ap; 1003 1004 ap = cam_sim_softc(sim); 1005 crit_enter(); 1006 ahci_os_lock_port(ap); 1007 ahci_port_intr(ap, 1); 1008 ahci_os_unlock_port(ap); 1009 crit_exit(); 1010 } 1011 1012 /* 1013 * Convert the SCSI command in ccb to an ata_xfer command in xa 1014 * for ATA_PORT_T_DISK operations. Set the completion function 1015 * to convert the response back, then dispatch to the OpenBSD AHCI 1016 * layer. 1017 * 1018 * AHCI DISK commands only support a limited command set, and we 1019 * fake additional commands to make it play nice with the CAM subsystem. 1020 */ 1021 static 1022 void 1023 ahci_xpt_scsi_disk_io(struct ahci_port *ap, struct ata_port *atx, 1024 union ccb *ccb) 1025 { 1026 struct ccb_hdr *ccbh; 1027 struct ccb_scsiio *csio; 1028 struct ata_xfer *xa; 1029 struct ata_port *at; 1030 struct ata_fis_h2d *fis; 1031 struct ata_pass_12 *atp12; 1032 struct ata_pass_16 *atp16; 1033 scsi_cdb_t cdb; 1034 union scsi_data *rdata; 1035 int rdata_len; 1036 u_int64_t capacity; 1037 u_int64_t lba; 1038 u_int32_t count; 1039 1040 ccbh = &ccb->csio.ccb_h; 1041 csio = &ccb->csio; 1042 at = atx ? atx : ap->ap_ata[0]; 1043 1044 /* 1045 * XXX not passing NULL at for direct attach! 1046 */ 1047 xa = ahci_ata_get_xfer(ap, atx); 1048 rdata = (void *)csio->data_ptr; 1049 rdata_len = csio->dxfer_len; 1050 1051 /* 1052 * Build the FIS or process the csio to completion. 1053 */ 1054 cdb = (void *)((ccbh->flags & CAM_CDB_POINTER) ? 1055 csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes); 1056 1057 switch(cdb->generic.opcode) { 1058 case REQUEST_SENSE: 1059 /* 1060 * Auto-sense everything, so explicit sense requests 1061 * return no-sense. 1062 */ 1063 ccbh->status = CAM_SCSI_STATUS_ERROR; 1064 break; 1065 case INQUIRY: 1066 /* 1067 * Inquiry supported features 1068 * 1069 * [opcode, byte2, page_code, length, control] 1070 */ 1071 if (cdb->inquiry.byte2 & SI_EVPD) { 1072 ahci_xpt_page_inquiry(ap, at, ccb); 1073 } else { 1074 bzero(rdata, rdata_len); 1075 if (rdata_len < SHORT_INQUIRY_LENGTH) { 1076 ccbh->status = CAM_CCB_LEN_ERR; 1077 break; 1078 } 1079 if (rdata_len > sizeof(rdata->inquiry_data)) 1080 rdata_len = sizeof(rdata->inquiry_data); 1081 rdata->inquiry_data.device = T_DIRECT; 1082 rdata->inquiry_data.version = SCSI_REV_SPC2; 1083 rdata->inquiry_data.response_format = 2; 1084 rdata->inquiry_data.additional_length = 32; 1085 bcopy("SATA ", rdata->inquiry_data.vendor, 8); 1086 bcopy(at->at_identify.model, 1087 rdata->inquiry_data.product, 1088 sizeof(rdata->inquiry_data.product)); 1089 bcopy(at->at_identify.firmware, 1090 rdata->inquiry_data.revision, 1091 sizeof(rdata->inquiry_data.revision)); 1092 ccbh->status = CAM_REQ_CMP; 1093 } 1094 1095 /* 1096 * Use the vendor specific area to set the TRIM status 1097 * for scsi_da 1098 */ 1099 if (at->at_identify.support_dsm) { 1100 rdata->inquiry_data.vendor_specific1[0] = 1101 at->at_identify.support_dsm &ATA_SUPPORT_DSM_TRIM; 1102 rdata->inquiry_data.vendor_specific1[1] = 1103 at->at_identify.max_dsm_blocks; 1104 } 1105 break; 1106 case READ_CAPACITY_16: 1107 if (cdb->read_capacity_16.service_action != SRC16_SERVICE_ACTION) { 1108 ccbh->status = CAM_REQ_INVALID; 1109 break; 1110 } 1111 if (rdata_len < sizeof(rdata->read_capacity_data_16)) { 1112 ccbh->status = CAM_CCB_LEN_ERR; 1113 break; 1114 } 1115 /* fall through */ 1116 case READ_CAPACITY: 1117 if (rdata_len < sizeof(rdata->read_capacity_data)) { 1118 ccbh->status = CAM_CCB_LEN_ERR; 1119 break; 1120 } 1121 1122 capacity = at->at_capacity; 1123 1124 bzero(rdata, rdata_len); 1125 if (cdb->generic.opcode == READ_CAPACITY) { 1126 rdata_len = sizeof(rdata->read_capacity_data); 1127 if (capacity > 0xFFFFFFFFU) { 1128 /* 1129 * Set capacity to 0 so maxsector winds up 1130 * being 0xffffffff in CAM in order to trigger 1131 * DA_STATE_PROBE2. 1132 */ 1133 capacity = 0; 1134 } 1135 bzero(&rdata->read_capacity_data, rdata_len); 1136 scsi_ulto4b((u_int32_t)capacity - 1, 1137 rdata->read_capacity_data.addr); 1138 scsi_ulto4b(512, rdata->read_capacity_data.length); 1139 } else { 1140 rdata_len = sizeof(rdata->read_capacity_data_16); 1141 bzero(&rdata->read_capacity_data_16, rdata_len); 1142 scsi_u64to8b(capacity - 1, 1143 rdata->read_capacity_data_16.addr); 1144 scsi_ulto4b(512, rdata->read_capacity_data_16.length); 1145 } 1146 ccbh->status = CAM_REQ_CMP; 1147 break; 1148 case SYNCHRONIZE_CACHE: 1149 /* 1150 * Synchronize cache. Specification says this can take 1151 * greater then 30 seconds so give it at least 45. 1152 */ 1153 fis = xa->fis; 1154 fis->flags = ATA_H2D_FLAGS_CMD; 1155 fis->command = ATA_C_FLUSH_CACHE; 1156 fis->device = 0; 1157 if (xa->timeout < 45000) 1158 xa->timeout = 45000; 1159 xa->datalen = 0; 1160 xa->flags = 0; 1161 xa->complete = ahci_ata_complete_disk_synchronize_cache; 1162 break; 1163 case TRIM: 1164 fis = xa->fis; 1165 fis->command = ATA_C_DATA_SET_MANAGEMENT; 1166 fis->features = (u_int8_t)ATA_SF_DSM_TRIM; 1167 fis->features_exp = (u_int8_t)(ATA_SF_DSM_TRIM>> 8); 1168 1169 xa->flags = ATA_F_WRITE; 1170 fis->flags = ATA_H2D_FLAGS_CMD; 1171 1172 xa->data = csio->data_ptr; 1173 xa->datalen = csio->dxfer_len; 1174 xa->timeout = ccbh->timeout*50; /* milliseconds */ 1175 1176 fis->sector_count = (u_int8_t)(xa->datalen/512); 1177 fis->sector_count_exp = (u_int8_t)((xa->datalen/512)>>8); 1178 1179 /* 1180 * lba field is reserved and must be 0. LBAs are encoded 1181 * in the range/length array passed as data. 1182 */ 1183 lba = 0; 1184 fis->lba_low = (u_int8_t)lba; 1185 fis->lba_mid = (u_int8_t)(lba >> 8); 1186 fis->lba_high = (u_int8_t)(lba >> 16); 1187 fis->lba_low_exp = (u_int8_t)(lba >> 24); 1188 fis->lba_mid_exp = (u_int8_t)(lba >> 32); 1189 fis->lba_high_exp = (u_int8_t)(lba >> 40); 1190 1191 fis->device = ATA_H2D_DEVICE_LBA; 1192 xa->data = csio->data_ptr; 1193 1194 xa->complete = ahci_ata_complete_disk_rw; 1195 ccbh->status = CAM_REQ_INPROG; 1196 break; 1197 case TEST_UNIT_READY: 1198 case START_STOP_UNIT: 1199 case PREVENT_ALLOW: 1200 /* 1201 * Just silently return success 1202 */ 1203 ccbh->status = CAM_REQ_CMP; 1204 rdata_len = 0; 1205 break; 1206 case ATA_PASS_12: 1207 atp12 = &cdb->ata_pass_12; 1208 fis = xa->fis; 1209 /* 1210 * Figure out the flags to be used, depending on the direction of the 1211 * CAM request. 1212 */ 1213 switch (ccbh->flags & CAM_DIR_MASK) { 1214 case CAM_DIR_IN: 1215 xa->flags = ATA_F_READ; 1216 break; 1217 case CAM_DIR_OUT: 1218 xa->flags = ATA_F_WRITE; 1219 break; 1220 default: 1221 xa->flags = 0; 1222 } 1223 xa->flags |= ATA_F_POLL | ATA_F_EXCLUSIVE; 1224 xa->data = csio->data_ptr; 1225 xa->datalen = csio->dxfer_len; 1226 xa->complete = ahci_ata_complete_disk_rw; 1227 xa->timeout = ccbh->timeout; 1228 1229 /* 1230 * Populate the fis from the information we received through CAM 1231 * ATA passthrough. 1232 */ 1233 fis->flags = ATA_H2D_FLAGS_CMD; /* maybe also atp12->flags ? */ 1234 fis->features = atp12->features; 1235 fis->sector_count = atp12->sector_count; 1236 fis->lba_low = atp12->lba_low; 1237 fis->lba_mid = atp12->lba_mid; 1238 fis->lba_high = atp12->lba_high; 1239 fis->device = atp12->device; /* maybe always 0? */ 1240 fis->command = atp12->command; 1241 fis->control = atp12->control; 1242 1243 /* 1244 * Mark as in progress so it is sent to the device. 1245 */ 1246 ccbh->status = CAM_REQ_INPROG; 1247 break; 1248 case ATA_PASS_16: 1249 atp16 = &cdb->ata_pass_16; 1250 fis = xa->fis; 1251 /* 1252 * Figure out the flags to be used, depending on the direction of the 1253 * CAM request. 1254 */ 1255 switch (ccbh->flags & CAM_DIR_MASK) { 1256 case CAM_DIR_IN: 1257 xa->flags = ATA_F_READ; 1258 break; 1259 case CAM_DIR_OUT: 1260 xa->flags = ATA_F_WRITE; 1261 break; 1262 default: 1263 xa->flags = 0; 1264 } 1265 xa->flags |= ATA_F_POLL | ATA_F_EXCLUSIVE; 1266 xa->data = csio->data_ptr; 1267 xa->datalen = csio->dxfer_len; 1268 xa->complete = ahci_ata_complete_disk_rw; 1269 xa->timeout = ccbh->timeout; 1270 1271 /* 1272 * Populate the fis from the information we received through CAM 1273 * ATA passthrough. 1274 */ 1275 fis->flags = ATA_H2D_FLAGS_CMD; /* maybe also atp16->flags ? */ 1276 fis->features = atp16->features; 1277 fis->features_exp = atp16->features_ext; 1278 fis->sector_count = atp16->sector_count; 1279 fis->sector_count_exp = atp16->sector_count_ext; 1280 fis->lba_low = atp16->lba_low; 1281 fis->lba_low_exp = atp16->lba_low_ext; 1282 fis->lba_mid = atp16->lba_mid; 1283 fis->lba_mid_exp = atp16->lba_mid_ext; 1284 fis->lba_high = atp16->lba_high; 1285 fis->lba_mid_exp = atp16->lba_mid_ext; 1286 fis->device = atp16->device; /* maybe always 0? */ 1287 fis->command = atp16->command; 1288 1289 /* 1290 * Mark as in progress so it is sent to the device. 1291 */ 1292 ccbh->status = CAM_REQ_INPROG; 1293 break; 1294 default: 1295 switch(cdb->generic.opcode) { 1296 case READ_6: 1297 lba = scsi_3btoul(cdb->rw_6.addr) & 0x1FFFFF; 1298 count = cdb->rw_6.length ? cdb->rw_6.length : 0x100; 1299 xa->flags = ATA_F_READ; 1300 break; 1301 case READ_10: 1302 lba = scsi_4btoul(cdb->rw_10.addr); 1303 count = scsi_2btoul(cdb->rw_10.length); 1304 xa->flags = ATA_F_READ; 1305 break; 1306 case READ_12: 1307 lba = scsi_4btoul(cdb->rw_12.addr); 1308 count = scsi_4btoul(cdb->rw_12.length); 1309 xa->flags = ATA_F_READ; 1310 break; 1311 case READ_16: 1312 lba = scsi_8btou64(cdb->rw_16.addr); 1313 count = scsi_4btoul(cdb->rw_16.length); 1314 xa->flags = ATA_F_READ; 1315 break; 1316 case WRITE_6: 1317 lba = scsi_3btoul(cdb->rw_6.addr) & 0x1FFFFF; 1318 count = cdb->rw_6.length ? cdb->rw_6.length : 0x100; 1319 xa->flags = ATA_F_WRITE; 1320 break; 1321 case WRITE_10: 1322 lba = scsi_4btoul(cdb->rw_10.addr); 1323 count = scsi_2btoul(cdb->rw_10.length); 1324 xa->flags = ATA_F_WRITE; 1325 break; 1326 case WRITE_12: 1327 lba = scsi_4btoul(cdb->rw_12.addr); 1328 count = scsi_4btoul(cdb->rw_12.length); 1329 xa->flags = ATA_F_WRITE; 1330 break; 1331 case WRITE_16: 1332 lba = scsi_8btou64(cdb->rw_16.addr); 1333 count = scsi_4btoul(cdb->rw_16.length); 1334 xa->flags = ATA_F_WRITE; 1335 break; 1336 default: 1337 ccbh->status = CAM_REQ_INVALID; 1338 break; 1339 } 1340 if (ccbh->status != CAM_REQ_INPROG) 1341 break; 1342 1343 fis = xa->fis; 1344 fis->flags = ATA_H2D_FLAGS_CMD; 1345 fis->lba_low = (u_int8_t)lba; 1346 fis->lba_mid = (u_int8_t)(lba >> 8); 1347 fis->lba_high = (u_int8_t)(lba >> 16); 1348 fis->device = ATA_H2D_DEVICE_LBA; 1349 1350 /* 1351 * NCQ only for direct-attached disks, do not currently 1352 * try to use NCQ with port multipliers. 1353 */ 1354 if (at->at_ncqdepth > 1 && 1355 ap->ap_type == ATA_PORT_T_DISK && 1356 (ap->ap_sc->sc_cap & AHCI_REG_CAP_SNCQ) && 1357 (ccbh->flags & CAM_POLLED) == 0) { 1358 /* 1359 * Use NCQ - always uses 48 bit addressing 1360 */ 1361 xa->flags |= ATA_F_NCQ; 1362 fis->command = (xa->flags & ATA_F_WRITE) ? 1363 ATA_C_WRITE_FPDMA : ATA_C_READ_FPDMA; 1364 fis->lba_low_exp = (u_int8_t)(lba >> 24); 1365 fis->lba_mid_exp = (u_int8_t)(lba >> 32); 1366 fis->lba_high_exp = (u_int8_t)(lba >> 40); 1367 fis->sector_count = xa->tag << 3; 1368 fis->features = (u_int8_t)count; 1369 fis->features_exp = (u_int8_t)(count >> 8); 1370 } else if (count > 0x100 || lba > 0x0FFFFFFFU) { 1371 /* 1372 * Use LBA48 1373 */ 1374 fis->command = (xa->flags & ATA_F_WRITE) ? 1375 ATA_C_WRITEDMA_EXT : ATA_C_READDMA_EXT; 1376 fis->lba_low_exp = (u_int8_t)(lba >> 24); 1377 fis->lba_mid_exp = (u_int8_t)(lba >> 32); 1378 fis->lba_high_exp = (u_int8_t)(lba >> 40); 1379 fis->sector_count = (u_int8_t)count; 1380 fis->sector_count_exp = (u_int8_t)(count >> 8); 1381 } else { 1382 /* 1383 * Use LBA 1384 * 1385 * NOTE: 256 sectors is supported, stored as 0. 1386 */ 1387 fis->command = (xa->flags & ATA_F_WRITE) ? 1388 ATA_C_WRITEDMA : ATA_C_READDMA; 1389 fis->device |= (u_int8_t)(lba >> 24) & 0x0F; 1390 fis->sector_count = (u_int8_t)count; 1391 } 1392 1393 xa->lba = lba; 1394 xa->data = csio->data_ptr; 1395 xa->datalen = csio->dxfer_len; 1396 xa->complete = ahci_ata_complete_disk_rw; 1397 xa->timeout = ccbh->timeout; /* milliseconds */ 1398 #if 0 1399 if (xa->timeout > 10000) /* XXX - debug */ 1400 xa->timeout = 10000; 1401 #endif 1402 if (ccbh->flags & CAM_POLLED) 1403 xa->flags |= ATA_F_POLL; 1404 break; 1405 } 1406 1407 /* 1408 * If the request is still in progress the xa and FIS have 1409 * been set up (except for the PM target), and must be dispatched. 1410 * Otherwise the request was completed. 1411 */ 1412 if (ccbh->status == CAM_REQ_INPROG) { 1413 KKASSERT(xa->complete != NULL); 1414 xa->atascsi_private = ccb; 1415 ccb->ccb_h.sim_priv.entries[0].ptr = ap; 1416 ahci_os_lock_port(ap); 1417 xa->fis->flags |= at->at_target; 1418 ahci_ata_cmd(xa); 1419 ahci_os_unlock_port(ap); 1420 } else { 1421 ahci_ata_put_xfer(xa); 1422 xpt_done(ccb); 1423 } 1424 } 1425 1426 /* 1427 * Convert the SCSI command in ccb to an ata_xfer command in xa 1428 * for ATA_PORT_T_ATAPI operations. Set the completion function 1429 * to convert the response back, then dispatch to the OpenBSD AHCI 1430 * layer. 1431 */ 1432 static 1433 void 1434 ahci_xpt_scsi_atapi_io(struct ahci_port *ap, struct ata_port *atx, 1435 union ccb *ccb) 1436 { 1437 struct ccb_hdr *ccbh; 1438 struct ccb_scsiio *csio; 1439 struct ata_xfer *xa; 1440 struct ata_fis_h2d *fis; 1441 scsi_cdb_t cdbs; 1442 scsi_cdb_t cdbd; 1443 int flags; 1444 struct ata_port *at; 1445 1446 ccbh = &ccb->csio.ccb_h; 1447 csio = &ccb->csio; 1448 at = atx ? atx : ap->ap_ata[0]; 1449 1450 switch (ccbh->flags & CAM_DIR_MASK) { 1451 case CAM_DIR_IN: 1452 flags = ATA_F_PACKET | ATA_F_READ; 1453 break; 1454 case CAM_DIR_OUT: 1455 flags = ATA_F_PACKET | ATA_F_WRITE; 1456 break; 1457 case CAM_DIR_NONE: 1458 flags = ATA_F_PACKET; 1459 break; 1460 default: 1461 ccbh->status = CAM_REQ_INVALID; 1462 xpt_done(ccb); 1463 return; 1464 /* NOT REACHED */ 1465 } 1466 1467 /* 1468 * Special handling to get the rfis back into host memory while 1469 * still allowing the chip to run commands in parallel to 1470 * ATAPI devices behind a PM. 1471 */ 1472 flags |= ATA_F_AUTOSENSE; 1473 1474 /* 1475 * The command has to fit in the packet command buffer. 1476 */ 1477 if (csio->cdb_len < 6 || csio->cdb_len > 16) { 1478 ccbh->status = CAM_CCB_LEN_ERR; 1479 xpt_done(ccb); 1480 return; 1481 } 1482 1483 /* 1484 * Initialize the XA and FIS. It is unclear how much of 1485 * this has to mimic the equivalent ATA command. 1486 * 1487 * XXX not passing NULL at for direct attach! 1488 */ 1489 xa = ahci_ata_get_xfer(ap, atx); 1490 fis = xa->fis; 1491 1492 fis->flags = ATA_H2D_FLAGS_CMD | at->at_target; 1493 fis->command = ATA_C_PACKET; 1494 fis->device = ATA_H2D_DEVICE_LBA; 1495 fis->sector_count = xa->tag << 3; 1496 if (flags & (ATA_F_READ | ATA_F_WRITE)) { 1497 if (flags & ATA_F_WRITE) { 1498 fis->features = ATA_H2D_FEATURES_DMA | 1499 ATA_H2D_FEATURES_DIR_WRITE; 1500 } else { 1501 fis->features = ATA_H2D_FEATURES_DMA | 1502 ATA_H2D_FEATURES_DIR_READ; 1503 } 1504 } else { 1505 fis->lba_mid = 0; 1506 fis->lba_high = 0; 1507 } 1508 fis->control = ATA_FIS_CONTROL_4BIT; 1509 1510 xa->flags = flags; 1511 xa->data = csio->data_ptr; 1512 xa->datalen = csio->dxfer_len; 1513 xa->timeout = ccbh->timeout; /* milliseconds */ 1514 1515 if (ccbh->flags & CAM_POLLED) 1516 xa->flags |= ATA_F_POLL; 1517 1518 /* 1519 * Copy the cdb to the packetcmd buffer in the FIS using a 1520 * convenient pointer in the xa. 1521 * 1522 * Zero-out any trailing bytes in case the ATAPI device cares. 1523 */ 1524 cdbs = (void *)((ccbh->flags & CAM_CDB_POINTER) ? 1525 csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes); 1526 bcopy(cdbs, xa->packetcmd, csio->cdb_len); 1527 if (csio->cdb_len < 16) 1528 bzero(xa->packetcmd + csio->cdb_len, 16 - csio->cdb_len); 1529 1530 #if 0 1531 kprintf("opcode %d cdb_len %d dxfer_len %d\n", 1532 cdbs->generic.opcode, 1533 csio->cdb_len, csio->dxfer_len); 1534 #endif 1535 1536 /* 1537 * Some ATAPI commands do not actually follow the SCSI standard. 1538 */ 1539 cdbd = (void *)xa->packetcmd; 1540 1541 switch(cdbd->generic.opcode) { 1542 case REQUEST_SENSE: 1543 /* 1544 * Force SENSE requests to the ATAPI sense length. 1545 * 1546 * It is unclear if this is needed or not. 1547 */ 1548 if (cdbd->sense.length == SSD_FULL_SIZE) { 1549 if (bootverbose) { 1550 kprintf("%s: Shortening sense request\n", 1551 PORTNAME(ap)); 1552 } 1553 cdbd->sense.length = offsetof(struct scsi_sense_data, 1554 extra_bytes[0]); 1555 } 1556 break; 1557 case INQUIRY: 1558 /* 1559 * Some ATAPI devices can't handle long inquiry lengths, 1560 * don't ask me why. Truncate the inquiry length. 1561 */ 1562 if (cdbd->inquiry.page_code == 0 && 1563 cdbd->inquiry.length > SHORT_INQUIRY_LENGTH) { 1564 cdbd->inquiry.length = SHORT_INQUIRY_LENGTH; 1565 } 1566 break; 1567 case READ_6: 1568 case WRITE_6: 1569 /* 1570 * Convert *_6 to *_10 commands. Most ATAPI devices 1571 * cannot handle the SCSI READ_6 and WRITE_6 commands. 1572 */ 1573 cdbd->rw_10.opcode |= 0x20; 1574 cdbd->rw_10.byte2 = 0; 1575 cdbd->rw_10.addr[0] = cdbs->rw_6.addr[0] & 0x1F; 1576 cdbd->rw_10.addr[1] = cdbs->rw_6.addr[1]; 1577 cdbd->rw_10.addr[2] = cdbs->rw_6.addr[2]; 1578 cdbd->rw_10.addr[3] = 0; 1579 cdbd->rw_10.reserved = 0; 1580 cdbd->rw_10.length[0] = 0; 1581 cdbd->rw_10.length[1] = cdbs->rw_6.length; 1582 cdbd->rw_10.control = cdbs->rw_6.control; 1583 break; 1584 default: 1585 break; 1586 } 1587 1588 /* 1589 * And dispatch 1590 */ 1591 xa->complete = ahci_atapi_complete_cmd; 1592 xa->atascsi_private = ccb; 1593 ccb->ccb_h.sim_priv.entries[0].ptr = ap; 1594 ahci_os_lock_port(ap); 1595 ahci_ata_cmd(xa); 1596 ahci_os_unlock_port(ap); 1597 } 1598 1599 /* 1600 * Simulate page inquiries for disk attachments. 1601 */ 1602 static 1603 void 1604 ahci_xpt_page_inquiry(struct ahci_port *ap, struct ata_port *at, union ccb *ccb) 1605 { 1606 union { 1607 struct scsi_vpd_supported_page_list list; 1608 struct scsi_vpd_unit_serial_number serno; 1609 struct scsi_vpd_unit_devid devid; 1610 char buf[256]; 1611 } *page; 1612 scsi_cdb_t cdb; 1613 int i; 1614 int j; 1615 int len; 1616 1617 page = kmalloc(sizeof(*page), M_DEVBUF, M_WAITOK | M_ZERO); 1618 1619 cdb = (void *)((ccb->ccb_h.flags & CAM_CDB_POINTER) ? 1620 ccb->csio.cdb_io.cdb_ptr : ccb->csio.cdb_io.cdb_bytes); 1621 1622 switch(cdb->inquiry.page_code) { 1623 case SVPD_SUPPORTED_PAGE_LIST: 1624 i = 0; 1625 page->list.device = T_DIRECT; 1626 page->list.page_code = SVPD_SUPPORTED_PAGE_LIST; 1627 page->list.list[i++] = SVPD_SUPPORTED_PAGE_LIST; 1628 page->list.list[i++] = SVPD_UNIT_SERIAL_NUMBER; 1629 page->list.list[i++] = SVPD_UNIT_DEVID; 1630 page->list.length = i; 1631 len = offsetof(struct scsi_vpd_supported_page_list, list[3]); 1632 break; 1633 case SVPD_UNIT_SERIAL_NUMBER: 1634 i = 0; 1635 j = sizeof(at->at_identify.serial); 1636 for (i = 0; i < j && at->at_identify.serial[i] == ' '; ++i) 1637 ; 1638 while (j > i && at->at_identify.serial[j-1] == ' ') 1639 --j; 1640 page->serno.device = T_DIRECT; 1641 page->serno.page_code = SVPD_UNIT_SERIAL_NUMBER; 1642 page->serno.length = j - i; 1643 bcopy(at->at_identify.serial + i, 1644 page->serno.serial_num, j - i); 1645 len = offsetof(struct scsi_vpd_unit_serial_number, 1646 serial_num[j-i]); 1647 break; 1648 case SVPD_UNIT_DEVID: 1649 /* fall through for now */ 1650 default: 1651 ccb->ccb_h.status = CAM_FUNC_NOTAVAIL; 1652 len = 0; 1653 break; 1654 } 1655 if (ccb->ccb_h.status == CAM_REQ_INPROG) { 1656 if (len <= ccb->csio.dxfer_len) { 1657 ccb->ccb_h.status = CAM_REQ_CMP; 1658 bzero(ccb->csio.data_ptr, ccb->csio.dxfer_len); 1659 bcopy(page, ccb->csio.data_ptr, len); 1660 ccb->csio.resid = ccb->csio.dxfer_len - len; 1661 } else { 1662 ccb->ccb_h.status = CAM_CCB_LEN_ERR; 1663 } 1664 } 1665 kfree(page, M_DEVBUF); 1666 } 1667 1668 /* 1669 * Completion function for ATA_PORT_T_DISK cache synchronization. 1670 */ 1671 static 1672 void 1673 ahci_ata_complete_disk_synchronize_cache(struct ata_xfer *xa) 1674 { 1675 union ccb *ccb = xa->atascsi_private; 1676 struct ccb_hdr *ccbh = &ccb->ccb_h; 1677 struct ahci_port *ap = ccb->ccb_h.sim_priv.entries[0].ptr; 1678 1679 switch(xa->state) { 1680 case ATA_S_COMPLETE: 1681 ccbh->status = CAM_REQ_CMP; 1682 ccb->csio.scsi_status = SCSI_STATUS_OK; 1683 break; 1684 case ATA_S_ERROR: 1685 kprintf("%s: synchronize_cache: error\n", 1686 ATANAME(ap, xa->at)); 1687 ccbh->status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID; 1688 ccb->csio.scsi_status = SCSI_STATUS_CHECK_COND; 1689 ahci_ata_dummy_sense(&ccb->csio.sense_data); 1690 break; 1691 case ATA_S_TIMEOUT: 1692 kprintf("%s: synchronize_cache: timeout\n", 1693 ATANAME(ap, xa->at)); 1694 ccbh->status = CAM_CMD_TIMEOUT; 1695 break; 1696 default: 1697 kprintf("%s: synchronize_cache: unknown state %d\n", 1698 ATANAME(ap, xa->at), xa->state); 1699 panic("%s: Unknown state", ATANAME(ap, xa->at)); 1700 ccbh->status = CAM_REQ_CMP_ERR; 1701 break; 1702 } 1703 ahci_ata_put_xfer(xa); 1704 /*ahci_os_unlock_port(ap); ILLEGAL SEE NOTE-1 AT TOP */ 1705 xpt_done(ccb); 1706 /*ahci_os_lock_port(ap);*/ 1707 } 1708 1709 /* 1710 * Completion function for ATA_PORT_T_DISK I/O 1711 */ 1712 static 1713 void 1714 ahci_ata_complete_disk_rw(struct ata_xfer *xa) 1715 { 1716 union ccb *ccb = xa->atascsi_private; 1717 struct ccb_hdr *ccbh = &ccb->ccb_h; 1718 struct ahci_port *ap = ccb->ccb_h.sim_priv.entries[0].ptr; 1719 struct ata_fis_h2d *fis; 1720 1721 switch(xa->state) { 1722 case ATA_S_COMPLETE: 1723 ccbh->status = CAM_REQ_CMP; 1724 ccb->csio.scsi_status = SCSI_STATUS_OK; 1725 break; 1726 case ATA_S_ERROR: 1727 fis = xa->fis; 1728 kprintf("%s: disk_rw: error fiscmd=0x%02x @off=0x%016jx, %zu\n", 1729 ATANAME(ap, xa->at), 1730 fis->command, 1731 (intmax_t)xa->lba * 512, 1732 xa->datalen); 1733 ccbh->status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID; 1734 ccb->csio.scsi_status = SCSI_STATUS_CHECK_COND; 1735 ahci_ata_dummy_sense(&ccb->csio.sense_data); 1736 break; 1737 case ATA_S_TIMEOUT: 1738 kprintf("%s: disk_rw: timeout\n", ATANAME(ap, xa->at)); 1739 ccbh->status = CAM_CMD_TIMEOUT; 1740 ccb->csio.scsi_status = SCSI_STATUS_CHECK_COND; 1741 ahci_ata_dummy_sense(&ccb->csio.sense_data); 1742 break; 1743 default: 1744 kprintf("%s: disk_rw: unknown state %d\n", 1745 ATANAME(ap, xa->at), xa->state); 1746 panic("%s: Unknown state", ATANAME(ap, xa->at)); 1747 ccbh->status = CAM_REQ_CMP_ERR; 1748 break; 1749 } 1750 ccb->csio.resid = xa->resid; 1751 ahci_ata_put_xfer(xa); 1752 /*ahci_os_unlock_port(ap); ILLEGAL SEE NOTE-1 AT TOP */ 1753 xpt_done(ccb); 1754 /*ahci_os_lock_port(ap);*/ 1755 } 1756 1757 /* 1758 * Completion function for ATA_PORT_T_ATAPI I/O 1759 * 1760 * Sense data is returned in the rfis. 1761 */ 1762 static 1763 void 1764 ahci_atapi_complete_cmd(struct ata_xfer *xa) 1765 { 1766 union ccb *ccb = xa->atascsi_private; 1767 struct ccb_hdr *ccbh = &ccb->ccb_h; 1768 struct ahci_port *ap = ccb->ccb_h.sim_priv.entries[0].ptr; 1769 scsi_cdb_t cdb; 1770 1771 cdb = (void *)((ccb->ccb_h.flags & CAM_CDB_POINTER) ? 1772 ccb->csio.cdb_io.cdb_ptr : ccb->csio.cdb_io.cdb_bytes); 1773 1774 switch(xa->state) { 1775 case ATA_S_COMPLETE: 1776 ccbh->status = CAM_REQ_CMP; 1777 ccb->csio.scsi_status = SCSI_STATUS_OK; 1778 break; 1779 case ATA_S_ERROR: 1780 ccbh->status = CAM_SCSI_STATUS_ERROR; 1781 ccb->csio.scsi_status = SCSI_STATUS_CHECK_COND; 1782 ahci_ata_atapi_sense(&xa->rfis, &ccb->csio.sense_data); 1783 break; 1784 case ATA_S_TIMEOUT: 1785 kprintf("%s: cmd %d: timeout\n", 1786 PORTNAME(ap), cdb->generic.opcode); 1787 ccbh->status = CAM_CMD_TIMEOUT; 1788 ccb->csio.scsi_status = SCSI_STATUS_CHECK_COND; 1789 ahci_ata_dummy_sense(&ccb->csio.sense_data); 1790 break; 1791 default: 1792 kprintf("%s: cmd %d: unknown state %d\n", 1793 PORTNAME(ap), cdb->generic.opcode, xa->state); 1794 panic("%s: Unknown state", PORTNAME(ap)); 1795 ccbh->status = CAM_REQ_CMP_ERR; 1796 break; 1797 } 1798 ccb->csio.resid = xa->resid; 1799 xa->atascsi_private = NULL; 1800 ahci_ata_put_xfer(xa); 1801 /*ahci_os_unlock_port(ap); ILLEGAL SEE NOTE-1 AT TOP */ 1802 xpt_done(ccb); 1803 /*ahci_os_lock_port(ap);*/ 1804 } 1805 1806 /* 1807 * Construct dummy sense data for errors on DISKs 1808 */ 1809 static 1810 void 1811 ahci_ata_dummy_sense(struct scsi_sense_data *sense_data) 1812 { 1813 sense_data->error_code = SSD_ERRCODE_VALID | SSD_CURRENT_ERROR; 1814 sense_data->segment = 0; 1815 sense_data->flags = SSD_KEY_MEDIUM_ERROR; 1816 sense_data->info[0] = 0; 1817 sense_data->info[1] = 0; 1818 sense_data->info[2] = 0; 1819 sense_data->info[3] = 0; 1820 sense_data->extra_len = 0; 1821 } 1822 1823 /* 1824 * Construct atapi sense data for errors on ATAPI 1825 * 1826 * The ATAPI sense data is stored in the passed rfis and must be converted 1827 * to SCSI sense data. 1828 */ 1829 static 1830 void 1831 ahci_ata_atapi_sense(struct ata_fis_d2h *rfis, 1832 struct scsi_sense_data *sense_data) 1833 { 1834 sense_data->error_code = SSD_ERRCODE_VALID | SSD_CURRENT_ERROR; 1835 sense_data->segment = 0; 1836 sense_data->flags = (rfis->error & 0xF0) >> 4; 1837 if (rfis->error & 0x04) 1838 sense_data->flags |= SSD_KEY_ILLEGAL_REQUEST; 1839 if (rfis->error & 0x02) 1840 sense_data->flags |= SSD_EOM; 1841 if (rfis->error & 0x01) 1842 sense_data->flags |= SSD_ILI; 1843 sense_data->info[0] = 0; 1844 sense_data->info[1] = 0; 1845 sense_data->info[2] = 0; 1846 sense_data->info[3] = 0; 1847 sense_data->extra_len = 0; 1848 } 1849 1850 static 1851 void 1852 ahci_strip_string(const char **basep, int *lenp) 1853 { 1854 const char *base = *basep; 1855 int len = *lenp; 1856 1857 while (len && (*base == 0 || *base == ' ')) { 1858 --len; 1859 ++base; 1860 } 1861 while (len && (base[len-1] == 0 || base[len-1] == ' ')) 1862 --len; 1863 *basep = base; 1864 *lenp = len; 1865 } 1866