1 /* 2 * Copyright (c) 2009 The DragonFly Project. All rights reserved. 3 * 4 * This code is derived from software contributed to The DragonFly Project 5 * by Matthew Dillon <dillon@backplane.com> 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * 3. Neither the name of The DragonFly Project nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific, prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * 35 * Copyright (c) 2007 David Gwynne <dlg@openbsd.org> 36 * 37 * Permission to use, copy, modify, and distribute this software for any 38 * purpose with or without fee is hereby granted, provided that the above 39 * copyright notice and this permission notice appear in all copies. 40 * 41 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 42 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 43 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 44 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 45 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 46 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 47 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 48 * 49 * $OpenBSD: atascsi.c,v 1.64 2009/02/16 21:19:06 miod Exp $ 50 * $DragonFly$ 51 */ 52 /* 53 * Implement each SATA port as its own SCSI bus on CAM. This way we can 54 * implement future port multiplier features as individual devices on the 55 * bus. 56 * 57 * Much of the cdb<->xa conversion code was taken from OpenBSD, the rest 58 * was written natively for DragonFly. 59 */ 60 61 #include "ahci.h" 62 63 const char *ScsiTypeArray[32] = { 64 "DIRECT", 65 "SEQUENTIAL", 66 "PRINTER", 67 "PROCESSOR", 68 "WORM", 69 "CDROM", 70 "SCANNER", 71 "OPTICAL", 72 "CHANGER", 73 "COMM", 74 "ASC0", 75 "ASC1", 76 "STORARRAY", 77 "ENCLOSURE", 78 "RBC", 79 "OCRW", 80 "0x10", 81 "OSD", 82 "ADC", 83 "0x13", 84 "0x14", 85 "0x15", 86 "0x16", 87 "0x17", 88 "0x18", 89 "0x19", 90 "0x1A", 91 "0x1B", 92 "0x1C", 93 "0x1D", 94 "0x1E", 95 "NODEVICE" 96 }; 97 98 static void ahci_xpt_action(struct cam_sim *sim, union ccb *ccb); 99 static void ahci_xpt_poll(struct cam_sim *sim); 100 static void ahci_xpt_scsi_disk_io(struct ahci_port *ap, 101 struct ata_port *at, union ccb *ccb); 102 static void ahci_xpt_scsi_atapi_io(struct ahci_port *ap, 103 struct ata_port *at, union ccb *ccb); 104 105 static void ahci_ata_complete_disk_rw(struct ata_xfer *xa); 106 static void ahci_ata_complete_disk_synchronize_cache(struct ata_xfer *xa); 107 static void ahci_atapi_complete_cmd(struct ata_xfer *xa); 108 static void ahci_ata_dummy_sense(struct scsi_sense_data *sense_data); 109 static void ahci_ata_atapi_sense(struct ata_fis_d2h *rfis, 110 struct scsi_sense_data *sense_data); 111 112 static int ahci_cam_probe_disk(struct ahci_port *ap, struct ata_port *at); 113 static int ahci_cam_probe_atapi(struct ahci_port *ap, struct ata_port *at); 114 static void ahci_ata_dummy_done(struct ata_xfer *xa); 115 static void ata_fix_identify(struct ata_identify *id); 116 static void ahci_cam_rescan(struct ahci_port *ap); 117 118 int 119 ahci_cam_attach(struct ahci_port *ap) 120 { 121 struct cam_devq *devq; 122 struct cam_sim *sim; 123 int error; 124 int unit; 125 126 /* 127 * We want at least one ccb to be available for error processing 128 * so don't let CAM use more then ncmds - 1. 129 */ 130 unit = device_get_unit(ap->ap_sc->sc_dev); 131 if (ap->ap_sc->sc_ncmds > 1) 132 devq = cam_simq_alloc(ap->ap_sc->sc_ncmds - 1); 133 else 134 devq = cam_simq_alloc(ap->ap_sc->sc_ncmds); 135 if (devq == NULL) { 136 return (ENOMEM); 137 } 138 sim = cam_sim_alloc(ahci_xpt_action, ahci_xpt_poll, "ahci", 139 (void *)ap, unit, &sim_mplock, 1, 1, devq); 140 cam_simq_release(devq); 141 if (sim == NULL) { 142 return (ENOMEM); 143 } 144 ap->ap_sim = sim; 145 ahci_os_unlock_port(ap); 146 error = xpt_bus_register(ap->ap_sim, ap->ap_num); 147 ahci_os_lock_port(ap); 148 if (error != CAM_SUCCESS) { 149 ahci_cam_detach(ap); 150 return (EINVAL); 151 } 152 ap->ap_flags |= AP_F_BUS_REGISTERED; 153 154 if (ap->ap_probe == ATA_PROBE_NEED_IDENT) 155 error = ahci_cam_probe(ap, NULL); 156 else 157 error = 0; 158 if (error) { 159 ahci_cam_detach(ap); 160 return (EIO); 161 } 162 ap->ap_flags |= AP_F_CAM_ATTACHED; 163 164 return(0); 165 } 166 167 /* 168 * The state of the port has changed. 169 * 170 * If at is NULL the physical port has changed state. 171 * If at is non-NULL a particular target behind a PM has changed state. 172 * 173 * If found is -1 the target state must be queued to a non-interrupt context. 174 * (only works with at == NULL). 175 * 176 * If found is 0 the target was removed. 177 * If found is 1 the target was inserted. 178 */ 179 void 180 ahci_cam_changed(struct ahci_port *ap, struct ata_port *atx, int found) 181 { 182 struct cam_path *tmppath; 183 int status; 184 int target; 185 186 target = atx ? atx->at_target : CAM_TARGET_WILDCARD; 187 188 if (ap->ap_sim == NULL) 189 return; 190 if (found == CAM_TARGET_WILDCARD) { 191 status = xpt_create_path(&tmppath, NULL, 192 cam_sim_path(ap->ap_sim), 193 target, CAM_LUN_WILDCARD); 194 if (status != CAM_REQ_CMP) 195 return; 196 ahci_cam_rescan(ap); 197 } else { 198 status = xpt_create_path(&tmppath, NULL, 199 cam_sim_path(ap->ap_sim), 200 target, 201 CAM_LUN_WILDCARD); 202 if (status != CAM_REQ_CMP) 203 return; 204 #if 0 205 /* 206 * This confuses CAM 207 */ 208 if (found) 209 xpt_async(AC_FOUND_DEVICE, tmppath, NULL); 210 else 211 xpt_async(AC_LOST_DEVICE, tmppath, NULL); 212 #endif 213 } 214 xpt_free_path(tmppath); 215 } 216 217 void 218 ahci_cam_detach(struct ahci_port *ap) 219 { 220 int error; 221 222 if ((ap->ap_flags & AP_F_CAM_ATTACHED) == 0) 223 return; 224 get_mplock(); 225 if (ap->ap_sim) { 226 xpt_freeze_simq(ap->ap_sim, 1); 227 } 228 if (ap->ap_flags & AP_F_BUS_REGISTERED) { 229 error = xpt_bus_deregister(cam_sim_path(ap->ap_sim)); 230 KKASSERT(error == CAM_REQ_CMP); 231 ap->ap_flags &= ~AP_F_BUS_REGISTERED; 232 } 233 if (ap->ap_sim) { 234 cam_sim_free(ap->ap_sim); 235 ap->ap_sim = NULL; 236 } 237 rel_mplock(); 238 ap->ap_flags &= ~AP_F_CAM_ATTACHED; 239 } 240 241 /* 242 * Once the AHCI port has been attached we need to probe for a device or 243 * devices on the port and setup various options. 244 * 245 * If at is NULL we are probing the direct-attached device on the port, 246 * which may or may not be a port multiplier. 247 */ 248 int 249 ahci_cam_probe(struct ahci_port *ap, struct ata_port *atx) 250 { 251 struct ata_port *at; 252 struct ata_xfer *xa; 253 u_int64_t capacity; 254 u_int64_t capacity_bytes; 255 int model_len; 256 int error; 257 int devncqdepth; 258 int i; 259 const char *wcstr; 260 const char *rastr; 261 const char *scstr; 262 const char *type; 263 264 error = EIO; 265 266 /* 267 * Delayed CAM attachment for initial probe, sim may be NULL 268 */ 269 if (ap->ap_sim == NULL) 270 return(0); 271 272 /* 273 * A NULL atx indicates a probe of the directly connected device. 274 * A non-NULL atx indicates a device connected via a port multiplier. 275 * We need to preserve atx for calls to ahci_ata_get_xfer(). 276 * 277 * at is always non-NULL. For directly connected devices we supply 278 * an (at) pointing to target 0. 279 */ 280 if (atx == NULL) { 281 at = ap->ap_ata; /* direct attached - device 0 */ 282 if (ap->ap_type == ATA_PORT_T_PM) { 283 kprintf("%s: Found Port Multiplier\n", 284 ATANAME(ap, atx)); 285 return (0); 286 } 287 at->at_type = ap->ap_type; 288 } else { 289 at = atx; 290 if (atx->at_type == ATA_PORT_T_PM) { 291 kprintf("%s: Bogus device, reducing port count to %d\n", 292 ATANAME(ap, atx), atx->at_target); 293 if (ap->ap_pmcount > atx->at_target) 294 ap->ap_pmcount = atx->at_target; 295 goto err; 296 } 297 } 298 if (ap->ap_type == ATA_PORT_T_NONE) 299 goto err; 300 if (at->at_type == ATA_PORT_T_NONE) 301 goto err; 302 303 /* 304 * Issue identify, saving the result 305 */ 306 xa = ahci_ata_get_xfer(ap, atx); 307 xa->complete = ahci_ata_dummy_done; 308 xa->data = &at->at_identify; 309 xa->datalen = sizeof(at->at_identify); 310 xa->flags = ATA_F_READ | ATA_F_PIO | ATA_F_POLL; 311 xa->fis->flags = ATA_H2D_FLAGS_CMD | at->at_target; 312 313 switch(at->at_type) { 314 case ATA_PORT_T_DISK: 315 xa->fis->command = ATA_C_IDENTIFY; 316 type = "DISK"; 317 break; 318 case ATA_PORT_T_ATAPI: 319 xa->fis->command = ATA_C_ATAPI_IDENTIFY; 320 xa->flags |= ATA_F_AUTOSENSE; 321 type = "ATAPI"; 322 break; 323 default: 324 xa->fis->command = ATA_C_ATAPI_IDENTIFY; 325 type = "UNKNOWN(ATAPI?)"; 326 break; 327 } 328 xa->fis->features = 0; 329 xa->fis->device = 0; 330 xa->timeout = 1000; 331 332 if (ahci_ata_cmd(xa) != ATA_S_COMPLETE) { 333 kprintf("%s: Detected %s device but unable to IDENTIFY\n", 334 ATANAME(ap, atx), type); 335 ahci_ata_put_xfer(xa); 336 goto err; 337 } 338 ahci_ata_put_xfer(xa); 339 340 ata_fix_identify(&at->at_identify); 341 342 /* 343 * Read capacity using SATA probe info. 344 */ 345 if (le16toh(at->at_identify.cmdset83) & 0x0400) { 346 /* LBA48 feature set supported */ 347 capacity = 0; 348 for (i = 3; i >= 0; --i) { 349 capacity <<= 16; 350 capacity += 351 le16toh(at->at_identify.addrsecxt[i]); 352 } 353 } else { 354 capacity = le16toh(at->at_identify.addrsec[1]); 355 capacity <<= 16; 356 capacity += le16toh(at->at_identify.addrsec[0]); 357 } 358 if (capacity == 0) 359 capacity = 1024 * 1024 / 512; 360 at->at_capacity = capacity; 361 if (atx == NULL) 362 ap->ap_probe = ATA_PROBE_GOOD; 363 364 capacity_bytes = capacity * 512; 365 366 /* 367 * Negotiate NCQ, throw away any ata_xfer's beyond the negotiated 368 * number of slots and limit the number of CAM ccb's to one less 369 * so we always have a slot available for recovery. 370 * 371 * NCQ is not used if ap_ncqdepth is 1 or the host controller does 372 * not support it, and in that case the driver can handle extra 373 * ccb's. 374 * 375 * NCQ is currently used only with direct-attached disks. It is 376 * not used with port multipliers or direct-attached ATAPI devices. 377 * 378 * Remember at least one extra CCB needs to be reserved for the 379 * error ccb. 380 */ 381 if ((ap->ap_sc->sc_cap & AHCI_REG_CAP_SNCQ) && 382 ap->ap_type == ATA_PORT_T_DISK && 383 (le16toh(at->at_identify.satacap) & (1 << 8))) { 384 at->at_ncqdepth = (le16toh(at->at_identify.qdepth) & 0x1F) + 1; 385 devncqdepth = at->at_ncqdepth; 386 if (at->at_ncqdepth > ap->ap_sc->sc_ncmds) 387 at->at_ncqdepth = ap->ap_sc->sc_ncmds; 388 if (at->at_ncqdepth > 1) { 389 for (i = 0; i < ap->ap_sc->sc_ncmds; ++i) { 390 xa = ahci_ata_get_xfer(ap, atx); 391 if (xa->tag < at->at_ncqdepth) { 392 xa->state = ATA_S_COMPLETE; 393 ahci_ata_put_xfer(xa); 394 } 395 } 396 if (at->at_ncqdepth >= ap->ap_sc->sc_ncmds) { 397 cam_devq_resize(ap->ap_sim->devq, 398 at->at_ncqdepth - 1); 399 } 400 } 401 } else { 402 devncqdepth = 0; 403 } 404 405 /* 406 * Make the model string a bit more presentable 407 */ 408 for (model_len = 40; model_len; --model_len) { 409 if (at->at_identify.model[model_len-1] == ' ') 410 continue; 411 if (at->at_identify.model[model_len-1] == 0) 412 continue; 413 break; 414 } 415 416 /* 417 * Generate informatiive strings. 418 * 419 * NOTE: We do not automatically set write caching, lookahead, 420 * or the security state for ATAPI devices. 421 */ 422 if (at->at_identify.cmdset82 & ATA_IDENTIFY_WRITECACHE) { 423 if (at->at_identify.features85 & ATA_IDENTIFY_WRITECACHE) 424 wcstr = "enabled"; 425 else if (at->at_type == ATA_PORT_T_ATAPI) 426 wcstr = "disabled"; 427 else 428 wcstr = "enabling"; 429 } else { 430 wcstr = "notsupp"; 431 } 432 433 if (at->at_identify.cmdset82 & ATA_IDENTIFY_LOOKAHEAD) { 434 if (at->at_identify.features85 & ATA_IDENTIFY_LOOKAHEAD) 435 rastr = "enabled"; 436 else if (at->at_type == ATA_PORT_T_ATAPI) 437 rastr = "disabled"; 438 else 439 rastr = "enabling"; 440 } else { 441 rastr = "notsupp"; 442 } 443 444 if (at->at_identify.cmdset82 & ATA_IDENTIFY_SECURITY) { 445 if (at->at_identify.securestatus & ATA_SECURE_FROZEN) 446 scstr = "frozen"; 447 else if (at->at_type == ATA_PORT_T_ATAPI) 448 scstr = "unfrozen"; 449 else if (AhciNoFeatures & (1 << ap->ap_num)) 450 scstr = "<disabled>"; 451 else 452 scstr = "freezing"; 453 } else { 454 scstr = "notsupp"; 455 } 456 457 kprintf("%s: Found %s \"%*.*s %8.8s\" serial=\"%20.20s\"\n" 458 "%s: tags=%d/%d satacap=%04x satafea=%04x NCQ=%s " 459 "capacity=%lld.%02dMB\n", 460 461 ATANAME(ap, atx), 462 type, 463 model_len, model_len, 464 at->at_identify.model, 465 at->at_identify.firmware, 466 at->at_identify.serial, 467 468 ATANAME(ap, atx), 469 devncqdepth, ap->ap_sc->sc_ncmds, 470 at->at_identify.satacap, 471 at->at_identify.satafsup, 472 (at->at_ncqdepth > 1 ? "YES" : "NO"), 473 (long long)capacity_bytes / (1024 * 1024), 474 (int)(capacity_bytes % (1024 * 1024)) * 100 / (1024 * 1024) 475 ); 476 kprintf("%s: f85=%04x f86=%04x f87=%04x WC=%s RA=%s SEC=%s\n", 477 ATANAME(ap, atx), 478 at->at_identify.features85, 479 at->at_identify.features86, 480 at->at_identify.features87, 481 wcstr, 482 rastr, 483 scstr 484 ); 485 486 /* 487 * Additional type-specific probing 488 */ 489 switch(at->at_type) { 490 case ATA_PORT_T_DISK: 491 error = ahci_cam_probe_disk(ap, atx); 492 break; 493 case ATA_PORT_T_ATAPI: 494 error = ahci_cam_probe_atapi(ap, atx); 495 break; 496 default: 497 error = EIO; 498 break; 499 } 500 err: 501 if (error) { 502 at->at_probe = ATA_PROBE_FAILED; 503 if (atx == NULL) 504 ap->ap_probe = at->at_probe; 505 } else { 506 at->at_probe = ATA_PROBE_GOOD; 507 if (atx == NULL) 508 ap->ap_probe = at->at_probe; 509 } 510 return (error); 511 } 512 513 /* 514 * DISK-specific probe after initial ident 515 */ 516 static int 517 ahci_cam_probe_disk(struct ahci_port *ap, struct ata_port *atx) 518 { 519 struct ata_port *at; 520 struct ata_xfer *xa; 521 522 at = atx ? atx : ap->ap_ata; 523 524 /* 525 * Enable write cache if supported 526 * 527 * NOTE: "WD My Book" external disk devices have a very poor 528 * daughter board between the the ESATA and the HD. Sending 529 * any ATA_C_SET_FEATURES commands will break the hardware port 530 * with a fatal protocol error. However, this device also 531 * indicates that WRITECACHE is already on and READAHEAD is 532 * not supported so we avoid the issue. 533 */ 534 if ((at->at_identify.cmdset82 & ATA_IDENTIFY_WRITECACHE) && 535 (at->at_identify.features85 & ATA_IDENTIFY_WRITECACHE) == 0) { 536 xa = ahci_ata_get_xfer(ap, atx); 537 xa->complete = ahci_ata_dummy_done; 538 xa->fis->command = ATA_C_SET_FEATURES; 539 /*xa->fis->features = ATA_SF_WRITECACHE_EN;*/ 540 xa->fis->features = ATA_SF_LOOKAHEAD_EN; 541 xa->fis->flags = ATA_H2D_FLAGS_CMD | at->at_target; 542 xa->fis->device = 0; 543 xa->flags = ATA_F_READ | ATA_F_PIO | ATA_F_POLL; 544 xa->timeout = 1000; 545 xa->datalen = 0; 546 if (ahci_ata_cmd(xa) == ATA_S_COMPLETE) 547 at->at_features |= ATA_PORT_F_WCACHE; 548 else 549 kprintf("%s: Unable to enable write-caching\n", 550 ATANAME(ap, atx)); 551 ahci_ata_put_xfer(xa); 552 } 553 554 /* 555 * Enable readahead if supported 556 */ 557 if ((at->at_identify.cmdset82 & ATA_IDENTIFY_LOOKAHEAD) && 558 (at->at_identify.features85 & ATA_IDENTIFY_LOOKAHEAD) == 0) { 559 xa = ahci_ata_get_xfer(ap, atx); 560 xa->complete = ahci_ata_dummy_done; 561 xa->fis->command = ATA_C_SET_FEATURES; 562 xa->fis->features = ATA_SF_LOOKAHEAD_EN; 563 xa->fis->flags = ATA_H2D_FLAGS_CMD | at->at_target; 564 xa->fis->device = 0; 565 xa->flags = ATA_F_READ | ATA_F_PIO | ATA_F_POLL; 566 xa->timeout = 1000; 567 xa->datalen = 0; 568 if (ahci_ata_cmd(xa) == ATA_S_COMPLETE) 569 at->at_features |= ATA_PORT_F_RAHEAD; 570 else 571 kprintf("%s: Unable to enable read-ahead\n", 572 ATANAME(ap, atx)); 573 ahci_ata_put_xfer(xa); 574 } 575 576 /* 577 * FREEZE LOCK the device so malicious users can't lock it on us. 578 * As there is no harm in issuing this to devices that don't 579 * support the security feature set we just send it, and don't bother 580 * checking if the device sends a command abort to tell us it doesn't 581 * support it 582 */ 583 if ((at->at_identify.cmdset82 & ATA_IDENTIFY_SECURITY) && 584 (at->at_identify.securestatus & ATA_SECURE_FROZEN) == 0 && 585 (AhciNoFeatures & (1 << ap->ap_num)) == 0) { 586 xa = ahci_ata_get_xfer(ap, atx); 587 xa->complete = ahci_ata_dummy_done; 588 xa->fis->command = ATA_C_SEC_FREEZE_LOCK; 589 xa->fis->flags = ATA_H2D_FLAGS_CMD | at->at_target; 590 xa->flags = ATA_F_READ | ATA_F_PIO | ATA_F_POLL; 591 xa->timeout = 1000; 592 xa->datalen = 0; 593 if (ahci_ata_cmd(xa) == ATA_S_COMPLETE) 594 at->at_features |= ATA_PORT_F_FRZLCK; 595 else 596 kprintf("%s: Unable to set security freeze\n", 597 ATANAME(ap, atx)); 598 ahci_ata_put_xfer(xa); 599 } 600 601 return (0); 602 } 603 604 /* 605 * ATAPI-specific probe after initial ident 606 */ 607 static int 608 ahci_cam_probe_atapi(struct ahci_port *ap, struct ata_port *atx) 609 { 610 return(0); 611 } 612 613 /* 614 * Fix byte ordering so buffers can be accessed as 615 * strings. 616 */ 617 static void 618 ata_fix_identify(struct ata_identify *id) 619 { 620 u_int16_t *swap; 621 int i; 622 623 swap = (u_int16_t *)id->serial; 624 for (i = 0; i < sizeof(id->serial) / sizeof(u_int16_t); i++) 625 swap[i] = bswap16(swap[i]); 626 627 swap = (u_int16_t *)id->firmware; 628 for (i = 0; i < sizeof(id->firmware) / sizeof(u_int16_t); i++) 629 swap[i] = bswap16(swap[i]); 630 631 swap = (u_int16_t *)id->model; 632 for (i = 0; i < sizeof(id->model) / sizeof(u_int16_t); i++) 633 swap[i] = bswap16(swap[i]); 634 } 635 636 /* 637 * Dummy done callback for xa. 638 */ 639 static void 640 ahci_ata_dummy_done(struct ata_xfer *xa) 641 { 642 } 643 644 /* 645 * Use an engineering request to initiate a target scan for devices 646 * behind a port multiplier. 647 * 648 * An asynchronous bus scan is used to avoid reentrancy issues. 649 */ 650 static void 651 ahci_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb) 652 { 653 struct ahci_port *ap = ccb->ccb_h.sim_priv.entries[0].ptr; 654 655 if (ccb->ccb_h.func_code == XPT_SCAN_BUS) { 656 ap->ap_flags &= ~AP_F_SCAN_RUNNING; 657 if (ap->ap_flags & AP_F_SCAN_REQUESTED) { 658 ap->ap_flags &= ~AP_F_SCAN_REQUESTED; 659 ahci_cam_rescan(ap); 660 } 661 ap->ap_flags |= AP_F_SCAN_COMPLETED; 662 wakeup(&ap->ap_flags); 663 } 664 xpt_free_ccb(ccb); 665 } 666 667 static void 668 ahci_cam_rescan(struct ahci_port *ap) 669 { 670 struct cam_path *path; 671 union ccb *ccb; 672 int status; 673 int i; 674 675 if (ap->ap_flags & AP_F_SCAN_RUNNING) { 676 ap->ap_flags |= AP_F_SCAN_REQUESTED; 677 return; 678 } 679 ap->ap_flags |= AP_F_SCAN_RUNNING; 680 for (i = 0; i < AHCI_MAX_PMPORTS; ++i) { 681 ap->ap_ata[i].at_features |= ATA_PORT_F_RESCAN; 682 } 683 684 status = xpt_create_path(&path, xpt_periph, cam_sim_path(ap->ap_sim), 685 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); 686 if (status != CAM_REQ_CMP) 687 return; 688 689 ccb = xpt_alloc_ccb(); 690 xpt_setup_ccb(&ccb->ccb_h, path, 5); /* 5 = low priority */ 691 ccb->ccb_h.func_code = XPT_ENG_EXEC; 692 ccb->ccb_h.cbfcnp = ahci_cam_rescan_callback; 693 ccb->ccb_h.sim_priv.entries[0].ptr = ap; 694 ccb->crcn.flags = CAM_FLAG_NONE; 695 xpt_action_async(ccb); 696 } 697 698 static void 699 ahci_xpt_rescan(struct ahci_port *ap) 700 { 701 struct cam_path *path; 702 union ccb *ccb; 703 int status; 704 705 status = xpt_create_path(&path, xpt_periph, cam_sim_path(ap->ap_sim), 706 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); 707 if (status != CAM_REQ_CMP) 708 return; 709 710 ccb = xpt_alloc_ccb(); 711 xpt_setup_ccb(&ccb->ccb_h, path, 5); /* 5 = low priority */ 712 ccb->ccb_h.func_code = XPT_SCAN_BUS; 713 ccb->ccb_h.cbfcnp = ahci_cam_rescan_callback; 714 ccb->ccb_h.sim_priv.entries[0].ptr = ap; 715 ccb->crcn.flags = CAM_FLAG_NONE; 716 xpt_action_async(ccb); 717 } 718 719 /* 720 * Action function - dispatch command 721 */ 722 static 723 void 724 ahci_xpt_action(struct cam_sim *sim, union ccb *ccb) 725 { 726 struct ahci_port *ap; 727 struct ata_port *at, *atx; 728 struct ccb_hdr *ccbh; 729 int unit; 730 731 /* XXX lock */ 732 ap = cam_sim_softc(sim); 733 at = ap->ap_ata; 734 atx = NULL; 735 KKASSERT(ap != NULL); 736 ccbh = &ccb->ccb_h; 737 unit = cam_sim_unit(sim); 738 739 /* 740 * Early failure checks. These checks do not apply to XPT_PATH_INQ, 741 * otherwise the bus rescan will not remove the dead devices when 742 * unplugging a PM. 743 * 744 * For non-wildcards we have one target (0) and one lun (0), 745 * unless we have a port multiplier. 746 * 747 * A wildcard target indicates only the general bus is being 748 * probed. 749 * 750 * Calculate at and atx. at is always non-NULL. atx is only 751 * non-NULL for direct-attached devices. It will be NULL for 752 * devices behind a port multiplier. 753 * 754 * XXX What do we do with a LUN wildcard? 755 */ 756 if (ccbh->target_id != CAM_TARGET_WILDCARD && 757 ccbh->func_code != XPT_PATH_INQ) { 758 if (ap->ap_type == ATA_PORT_T_NONE) { 759 ccbh->status = CAM_DEV_NOT_THERE; 760 xpt_done(ccb); 761 return; 762 } 763 if (ccbh->target_id < 0 || ccbh->target_id >= ap->ap_pmcount) { 764 ccbh->status = CAM_DEV_NOT_THERE; 765 xpt_done(ccb); 766 return; 767 } 768 at += ccbh->target_id; 769 if (ap->ap_type == ATA_PORT_T_PM) 770 atx = at; 771 772 if (ccbh->target_lun != CAM_LUN_WILDCARD && ccbh->target_lun) { 773 ccbh->status = CAM_DEV_NOT_THERE; 774 xpt_done(ccb); 775 return; 776 } 777 } 778 779 /* 780 * Switch on the meta XPT command 781 */ 782 switch(ccbh->func_code) { 783 case XPT_ENG_EXEC: 784 /* 785 * This routine is called after a port multiplier has been 786 * probed. 787 */ 788 ccbh->status = CAM_REQ_CMP; 789 ahci_os_lock_port(ap); 790 ahci_port_state_machine(ap, 0); 791 ahci_os_unlock_port(ap); 792 xpt_done(ccb); 793 ahci_xpt_rescan(ap); 794 break; 795 case XPT_PATH_INQ: 796 /* 797 * This command always succeeds, otherwise the bus scan 798 * will not detach dead devices. 799 */ 800 ccb->cpi.version_num = 1; 801 ccb->cpi.hba_inquiry = 0; 802 ccb->cpi.target_sprt = 0; 803 ccb->cpi.hba_misc = PIM_SEQSCAN; 804 ccb->cpi.hba_eng_cnt = 0; 805 bzero(ccb->cpi.vuhba_flags, sizeof(ccb->cpi.vuhba_flags)); 806 ccb->cpi.max_target = AHCI_MAX_PMPORTS - 1; 807 ccb->cpi.max_lun = 0; 808 ccb->cpi.async_flags = 0; 809 ccb->cpi.hpath_id = 0; 810 ccb->cpi.initiator_id = AHCI_MAX_PMPORTS - 1; 811 ccb->cpi.unit_number = cam_sim_unit(sim); 812 ccb->cpi.bus_id = cam_sim_bus(sim); 813 ccb->cpi.base_transfer_speed = 150000; 814 ccb->cpi.transport = XPORT_SATA; 815 ccb->cpi.transport_version = 1; 816 ccb->cpi.protocol = PROTO_SCSI; 817 ccb->cpi.protocol_version = SCSI_REV_2; 818 819 ccbh->status = CAM_REQ_CMP; 820 if (ccbh->target_id == CAM_TARGET_WILDCARD) { 821 ahci_os_lock_port(ap); 822 ahci_port_state_machine(ap, 0); 823 ahci_os_unlock_port(ap); 824 } else { 825 switch(ahci_pread(ap, AHCI_PREG_SSTS) & 826 AHCI_PREG_SSTS_SPD) { 827 case AHCI_PREG_SSTS_SPD_GEN1: 828 ccb->cpi.base_transfer_speed = 150000; 829 break; 830 case AHCI_PREG_SSTS_SPD_GEN2: 831 ccb->cpi.base_transfer_speed = 300000; 832 break; 833 default: 834 /* unknown */ 835 ccb->cpi.base_transfer_speed = 1000; 836 break; 837 } 838 #if 0 839 if (ap->ap_type == ATA_PORT_T_NONE) 840 ccbh->status = CAM_DEV_NOT_THERE; 841 #endif 842 } 843 xpt_done(ccb); 844 break; 845 case XPT_RESET_DEV: 846 ahci_os_lock_port(ap); 847 if (ap->ap_type == ATA_PORT_T_NONE) { 848 ccbh->status = CAM_DEV_NOT_THERE; 849 } else { 850 ahci_port_reset(ap, atx, 0); 851 ccbh->status = CAM_REQ_CMP; 852 } 853 ahci_os_unlock_port(ap); 854 xpt_done(ccb); 855 break; 856 case XPT_RESET_BUS: 857 ahci_os_lock_port(ap); 858 ahci_port_reset(ap, NULL, 1); 859 ahci_os_unlock_port(ap); 860 ccbh->status = CAM_REQ_CMP; 861 xpt_done(ccb); 862 break; 863 case XPT_SET_TRAN_SETTINGS: 864 ccbh->status = CAM_FUNC_NOTAVAIL; 865 xpt_done(ccb); 866 break; 867 case XPT_GET_TRAN_SETTINGS: 868 ccb->cts.protocol = PROTO_SCSI; 869 ccb->cts.protocol_version = SCSI_REV_2; 870 ccb->cts.transport = XPORT_SATA; 871 ccb->cts.transport_version = XPORT_VERSION_UNSPECIFIED; 872 ccb->cts.proto_specific.valid = 0; 873 ccb->cts.xport_specific.valid = 0; 874 ccbh->status = CAM_REQ_CMP; 875 xpt_done(ccb); 876 break; 877 case XPT_CALC_GEOMETRY: 878 cam_calc_geometry(&ccb->ccg, 1); 879 xpt_done(ccb); 880 break; 881 case XPT_SCSI_IO: 882 /* 883 * Our parallel startup code might have only probed through 884 * to the IDENT, so do the last step if necessary. 885 */ 886 if (at->at_probe == ATA_PROBE_NEED_IDENT) 887 ahci_cam_probe(ap, atx); 888 if (at->at_probe != ATA_PROBE_GOOD) { 889 ccbh->status = CAM_DEV_NOT_THERE; 890 xpt_done(ccb); 891 break; 892 } 893 switch(at->at_type) { 894 case ATA_PORT_T_DISK: 895 ahci_xpt_scsi_disk_io(ap, atx, ccb); 896 break; 897 case ATA_PORT_T_ATAPI: 898 ahci_xpt_scsi_atapi_io(ap, atx, ccb); 899 break; 900 default: 901 ccbh->status = CAM_REQ_INVALID; 902 xpt_done(ccb); 903 break; 904 } 905 break; 906 default: 907 ccbh->status = CAM_REQ_INVALID; 908 xpt_done(ccb); 909 break; 910 } 911 } 912 913 /* 914 * Poll function. 915 * 916 * Generally this function gets called heavily when interrupts might be 917 * non-operational, during a halt/reboot or panic. 918 */ 919 static 920 void 921 ahci_xpt_poll(struct cam_sim *sim) 922 { 923 struct ahci_port *ap; 924 925 ap = cam_sim_softc(sim); 926 crit_enter(); 927 ahci_os_lock_port(ap); 928 ahci_port_intr(ap, 1); 929 ahci_os_unlock_port(ap); 930 crit_exit(); 931 } 932 933 /* 934 * Convert the SCSI command in ccb to an ata_xfer command in xa 935 * for ATA_PORT_T_DISK operations. Set the completion function 936 * to convert the response back, then dispatch to the OpenBSD AHCI 937 * layer. 938 * 939 * AHCI DISK commands only support a limited command set, and we 940 * fake additional commands to make it play nice with the CAM subsystem. 941 */ 942 static 943 void 944 ahci_xpt_scsi_disk_io(struct ahci_port *ap, struct ata_port *atx, 945 union ccb *ccb) 946 { 947 struct ccb_hdr *ccbh; 948 struct ccb_scsiio *csio; 949 struct ata_xfer *xa; 950 struct ata_port *at; 951 struct ata_fis_h2d *fis; 952 scsi_cdb_t cdb; 953 union scsi_data *rdata; 954 int rdata_len; 955 u_int64_t capacity; 956 u_int64_t lba; 957 u_int32_t count; 958 959 ccbh = &ccb->csio.ccb_h; 960 csio = &ccb->csio; 961 at = atx ? atx : &ap->ap_ata[0]; 962 963 /* 964 * XXX not passing NULL at for direct attach! 965 */ 966 xa = ahci_ata_get_xfer(ap, atx); 967 rdata = (void *)csio->data_ptr; 968 rdata_len = csio->dxfer_len; 969 970 /* 971 * Build the FIS or process the csio to completion. 972 */ 973 cdb = (void *)((ccbh->flags & CAM_CDB_POINTER) ? 974 csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes); 975 976 switch(cdb->generic.opcode) { 977 case REQUEST_SENSE: 978 /* 979 * Auto-sense everything, so explicit sense requests 980 * return no-sense. 981 */ 982 ccbh->status = CAM_SCSI_STATUS_ERROR; 983 break; 984 case INQUIRY: 985 /* 986 * Inquiry supported features 987 * 988 * [opcode, byte2, page_code, length, control] 989 */ 990 if (cdb->inquiry.byte2 & SI_EVPD) { 991 switch(cdb->inquiry.page_code) { 992 case SVPD_SUPPORTED_PAGE_LIST: 993 /* XXX atascsi_disk_vpd_supported */ 994 case SVPD_UNIT_SERIAL_NUMBER: 995 /* XXX atascsi_disk_vpd_serial */ 996 case SVPD_UNIT_DEVID: 997 /* XXX atascsi_disk_vpd_ident */ 998 default: 999 ccbh->status = CAM_FUNC_NOTAVAIL; 1000 break; 1001 } 1002 } else { 1003 bzero(rdata, rdata_len); 1004 if (rdata_len < SHORT_INQUIRY_LENGTH) { 1005 ccbh->status = CAM_CCB_LEN_ERR; 1006 break; 1007 } 1008 if (rdata_len > sizeof(rdata->inquiry_data)) 1009 rdata_len = sizeof(rdata->inquiry_data); 1010 rdata->inquiry_data.device = T_DIRECT; 1011 rdata->inquiry_data.version = SCSI_REV_SPC2; 1012 rdata->inquiry_data.response_format = 2; 1013 rdata->inquiry_data.additional_length = 32; 1014 bcopy("SATA ", rdata->inquiry_data.vendor, 8); 1015 bcopy(at->at_identify.model, 1016 rdata->inquiry_data.product, 1017 sizeof(rdata->inquiry_data.product)); 1018 bcopy(at->at_identify.firmware, 1019 rdata->inquiry_data.revision, 1020 sizeof(rdata->inquiry_data.revision)); 1021 ccbh->status = CAM_REQ_CMP; 1022 } 1023 break; 1024 case READ_CAPACITY_16: 1025 if (cdb->read_capacity_16.service_action != SRC16_SERVICE_ACTION) { 1026 ccbh->status = CAM_REQ_INVALID; 1027 break; 1028 } 1029 if (rdata_len < sizeof(rdata->read_capacity_data_16)) { 1030 ccbh->status = CAM_CCB_LEN_ERR; 1031 break; 1032 } 1033 /* fall through */ 1034 case READ_CAPACITY: 1035 if (rdata_len < sizeof(rdata->read_capacity_data)) { 1036 ccbh->status = CAM_CCB_LEN_ERR; 1037 break; 1038 } 1039 1040 capacity = at->at_capacity; 1041 1042 bzero(rdata, rdata_len); 1043 if (cdb->generic.opcode == READ_CAPACITY) { 1044 rdata_len = sizeof(rdata->read_capacity_data); 1045 if (capacity > 0xFFFFFFFFU) 1046 capacity = 0xFFFFFFFFU; 1047 bzero(&rdata->read_capacity_data, rdata_len); 1048 scsi_ulto4b((u_int32_t)capacity - 1, 1049 rdata->read_capacity_data.addr); 1050 scsi_ulto4b(512, rdata->read_capacity_data.length); 1051 } else { 1052 rdata_len = sizeof(rdata->read_capacity_data_16); 1053 bzero(&rdata->read_capacity_data_16, rdata_len); 1054 scsi_u64to8b(capacity - 1, 1055 rdata->read_capacity_data_16.addr); 1056 scsi_ulto4b(512, rdata->read_capacity_data_16.length); 1057 } 1058 ccbh->status = CAM_REQ_CMP; 1059 break; 1060 case SYNCHRONIZE_CACHE: 1061 /* 1062 * Synchronize cache. Specification says this can take 1063 * greater then 30 seconds so give it at least 45. 1064 */ 1065 fis = xa->fis; 1066 fis->flags = ATA_H2D_FLAGS_CMD; 1067 fis->command = ATA_C_FLUSH_CACHE; 1068 fis->device = 0; 1069 if (xa->timeout < 45000) 1070 xa->timeout = 45000; 1071 xa->datalen = 0; 1072 xa->flags = ATA_F_READ; 1073 xa->complete = ahci_ata_complete_disk_synchronize_cache; 1074 break; 1075 case TEST_UNIT_READY: 1076 case START_STOP_UNIT: 1077 case PREVENT_ALLOW: 1078 /* 1079 * Just silently return success 1080 */ 1081 ccbh->status = CAM_REQ_CMP; 1082 rdata_len = 0; 1083 break; 1084 case ATA_PASS_12: 1085 case ATA_PASS_16: 1086 /* 1087 * XXX implement pass-through 1088 */ 1089 ccbh->status = CAM_FUNC_NOTAVAIL; 1090 break; 1091 default: 1092 switch(cdb->generic.opcode) { 1093 case READ_6: 1094 lba = scsi_3btoul(cdb->rw_6.addr) & 0x1FFFFF; 1095 count = cdb->rw_6.length ? cdb->rw_6.length : 0x100; 1096 xa->flags = ATA_F_READ; 1097 break; 1098 case READ_10: 1099 lba = scsi_4btoul(cdb->rw_10.addr); 1100 count = scsi_2btoul(cdb->rw_10.length); 1101 xa->flags = ATA_F_READ; 1102 break; 1103 case READ_12: 1104 lba = scsi_4btoul(cdb->rw_12.addr); 1105 count = scsi_4btoul(cdb->rw_12.length); 1106 xa->flags = ATA_F_READ; 1107 break; 1108 case READ_16: 1109 lba = scsi_8btou64(cdb->rw_16.addr); 1110 count = scsi_4btoul(cdb->rw_16.length); 1111 xa->flags = ATA_F_READ; 1112 break; 1113 case WRITE_6: 1114 lba = scsi_3btoul(cdb->rw_6.addr) & 0x1FFFFF; 1115 count = cdb->rw_6.length ? cdb->rw_6.length : 0x100; 1116 xa->flags = ATA_F_WRITE; 1117 break; 1118 case WRITE_10: 1119 lba = scsi_4btoul(cdb->rw_10.addr); 1120 count = scsi_2btoul(cdb->rw_10.length); 1121 xa->flags = ATA_F_WRITE; 1122 break; 1123 case WRITE_12: 1124 lba = scsi_4btoul(cdb->rw_12.addr); 1125 count = scsi_4btoul(cdb->rw_12.length); 1126 xa->flags = ATA_F_WRITE; 1127 break; 1128 case WRITE_16: 1129 lba = scsi_8btou64(cdb->rw_16.addr); 1130 count = scsi_4btoul(cdb->rw_16.length); 1131 xa->flags = ATA_F_WRITE; 1132 break; 1133 default: 1134 ccbh->status = CAM_REQ_INVALID; 1135 break; 1136 } 1137 if (ccbh->status != CAM_REQ_INPROG) 1138 break; 1139 1140 fis = xa->fis; 1141 fis->flags = ATA_H2D_FLAGS_CMD; 1142 fis->lba_low = (u_int8_t)lba; 1143 fis->lba_mid = (u_int8_t)(lba >> 8); 1144 fis->lba_high = (u_int8_t)(lba >> 16); 1145 fis->device = ATA_H2D_DEVICE_LBA; 1146 1147 /* 1148 * NCQ only for direct-attached disks, do not currently 1149 * try to use NCQ with port multipliers. 1150 */ 1151 if (at->at_ncqdepth > 1 && 1152 ap->ap_type == ATA_PORT_T_DISK && 1153 (ap->ap_sc->sc_cap & AHCI_REG_CAP_SNCQ) && 1154 (ccbh->flags & CAM_POLLED) == 0) { 1155 /* 1156 * Use NCQ - always uses 48 bit addressing 1157 */ 1158 xa->flags |= ATA_F_NCQ; 1159 fis->command = (xa->flags & ATA_F_WRITE) ? 1160 ATA_C_WRITE_FPDMA : ATA_C_READ_FPDMA; 1161 fis->lba_low_exp = (u_int8_t)(lba >> 24); 1162 fis->lba_mid_exp = (u_int8_t)(lba >> 32); 1163 fis->lba_high_exp = (u_int8_t)(lba >> 40); 1164 fis->sector_count = xa->tag << 3; 1165 fis->features = (u_int8_t)count; 1166 fis->features_exp = (u_int8_t)(count >> 8); 1167 } else if (count > 0x100 || lba > 0xFFFFFFFFU) { 1168 /* 1169 * Use LBA48 1170 */ 1171 fis->command = (xa->flags & ATA_F_WRITE) ? 1172 ATA_C_WRITEDMA_EXT : ATA_C_READDMA_EXT; 1173 fis->lba_low_exp = (u_int8_t)(lba >> 24); 1174 fis->lba_mid_exp = (u_int8_t)(lba >> 32); 1175 fis->lba_high_exp = (u_int8_t)(lba >> 40); 1176 fis->sector_count = (u_int8_t)count; 1177 fis->sector_count_exp = (u_int8_t)(count >> 8); 1178 } else { 1179 /* 1180 * Use LBA 1181 * 1182 * NOTE: 256 sectors is supported, stored as 0. 1183 */ 1184 fis->command = (xa->flags & ATA_F_WRITE) ? 1185 ATA_C_WRITEDMA : ATA_C_READDMA; 1186 fis->device |= (u_int8_t)(lba >> 24) & 0x0F; 1187 fis->sector_count = (u_int8_t)count; 1188 } 1189 1190 xa->data = csio->data_ptr; 1191 xa->datalen = csio->dxfer_len; 1192 xa->complete = ahci_ata_complete_disk_rw; 1193 xa->timeout = ccbh->timeout; /* milliseconds */ 1194 #if 0 1195 if (xa->timeout > 10000) /* XXX - debug */ 1196 xa->timeout = 10000; 1197 #endif 1198 if (ccbh->flags & CAM_POLLED) 1199 xa->flags |= ATA_F_POLL; 1200 break; 1201 } 1202 1203 /* 1204 * If the request is still in progress the xa and FIS have 1205 * been set up and must be dispatched. Otherwise the request 1206 * is complete. 1207 */ 1208 if (ccbh->status == CAM_REQ_INPROG) { 1209 KKASSERT(xa->complete != NULL); 1210 xa->atascsi_private = ccb; 1211 ccb->ccb_h.sim_priv.entries[0].ptr = ap; 1212 ahci_os_lock_port(ap); 1213 fis->flags |= at->at_target; 1214 ahci_ata_cmd(xa); 1215 ahci_os_unlock_port(ap); 1216 } else { 1217 ahci_ata_put_xfer(xa); 1218 xpt_done(ccb); 1219 } 1220 } 1221 1222 /* 1223 * Convert the SCSI command in ccb to an ata_xfer command in xa 1224 * for ATA_PORT_T_ATAPI operations. Set the completion function 1225 * to convert the response back, then dispatch to the OpenBSD AHCI 1226 * layer. 1227 */ 1228 static 1229 void 1230 ahci_xpt_scsi_atapi_io(struct ahci_port *ap, struct ata_port *atx, 1231 union ccb *ccb) 1232 { 1233 struct ccb_hdr *ccbh; 1234 struct ccb_scsiio *csio; 1235 struct ata_xfer *xa; 1236 struct ata_fis_h2d *fis; 1237 scsi_cdb_t cdbs; 1238 scsi_cdb_t cdbd; 1239 int flags; 1240 struct ata_port *at; 1241 1242 ccbh = &ccb->csio.ccb_h; 1243 csio = &ccb->csio; 1244 at = atx ? atx : &ap->ap_ata[0]; 1245 1246 switch (ccbh->flags & CAM_DIR_MASK) { 1247 case CAM_DIR_IN: 1248 flags = ATA_F_PACKET | ATA_F_READ; 1249 break; 1250 case CAM_DIR_OUT: 1251 flags = ATA_F_PACKET | ATA_F_WRITE; 1252 break; 1253 case CAM_DIR_NONE: 1254 flags = ATA_F_PACKET; 1255 break; 1256 default: 1257 ccbh->status = CAM_REQ_INVALID; 1258 xpt_done(ccb); 1259 return; 1260 /* NOT REACHED */ 1261 } 1262 1263 /* 1264 * Special handling to get the rfis back into host memory while 1265 * still allowing the Sili chip to run commands in parallel to 1266 * ATAPI devices behind a PM. 1267 */ 1268 flags |= ATA_F_AUTOSENSE; 1269 1270 /* 1271 * The command has to fit in the packet command buffer. 1272 */ 1273 if (csio->cdb_len < 6 || csio->cdb_len > 16) { 1274 ccbh->status = CAM_CCB_LEN_ERR; 1275 xpt_done(ccb); 1276 return; 1277 } 1278 1279 /* 1280 * Initialize the XA and FIS. 1281 * 1282 * XXX not passing NULL at for direct attach! 1283 */ 1284 xa = ahci_ata_get_xfer(ap, atx); 1285 fis = xa->fis; 1286 1287 fis->flags = ATA_H2D_FLAGS_CMD | at->at_target; 1288 fis->command = ATA_C_PACKET; 1289 fis->device = 0; 1290 fis->sector_count = xa->tag << 3; 1291 fis->features = ATA_H2D_FEATURES_DMA | 1292 ((flags & ATA_F_WRITE) ? 1293 ATA_H2D_FEATURES_DIR_WRITE : ATA_H2D_FEATURES_DIR_READ); 1294 fis->lba_mid = 0x00; 1295 fis->lba_high = 0x20; 1296 1297 xa->flags = flags; 1298 xa->data = csio->data_ptr; 1299 xa->datalen = csio->dxfer_len; 1300 xa->timeout = ccbh->timeout; /* milliseconds */ 1301 1302 if (ccbh->flags & CAM_POLLED) 1303 xa->flags |= ATA_F_POLL; 1304 1305 /* 1306 * Copy the cdb to the packetcmd buffer in the FIS using a 1307 * convenient pointer in the xa. 1308 */ 1309 cdbs = (void *)((ccbh->flags & CAM_CDB_POINTER) ? 1310 csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes); 1311 bcopy(cdbs, xa->packetcmd, csio->cdb_len); 1312 1313 #if 0 1314 kprintf("opcode %d cdb_len %d dxfer_len %d\n", 1315 cdbs->generic.opcode, 1316 csio->cdb_len, csio->dxfer_len); 1317 #endif 1318 1319 /* 1320 * Some ATAPI commands do not actually follow the SCSI standard. 1321 */ 1322 cdbd = (void *)xa->packetcmd; 1323 1324 switch(cdbd->generic.opcode) { 1325 case INQUIRY: 1326 /* 1327 * Some ATAPI devices can't handle SI_EVPD being set 1328 * for a basic inquiry (page_code == 0). 1329 * 1330 * Some ATAPI devices can't handle long inquiry lengths, 1331 * don't ask me why. Truncate the inquiry length. 1332 */ 1333 if ((cdbd->inquiry.byte2 & SI_EVPD) && 1334 cdbd->inquiry.page_code == 0) { 1335 cdbd->inquiry.byte2 &= ~SI_EVPD; 1336 } 1337 if (cdbd->inquiry.page_code == 0 && 1338 cdbd->inquiry.length > SHORT_INQUIRY_LENGTH) { 1339 cdbd->inquiry.length = SHORT_INQUIRY_LENGTH; 1340 } 1341 break; 1342 case READ_6: 1343 case WRITE_6: 1344 /* 1345 * Convert *_6 to *_10 commands. Most ATAPI devices 1346 * cannot handle the SCSI READ_6 and WRITE_6 commands. 1347 */ 1348 cdbd->rw_10.opcode |= 0x20; 1349 cdbd->rw_10.byte2 = 0; 1350 cdbd->rw_10.addr[0] = cdbs->rw_6.addr[0] & 0x1F; 1351 cdbd->rw_10.addr[1] = cdbs->rw_6.addr[1]; 1352 cdbd->rw_10.addr[2] = cdbs->rw_6.addr[2]; 1353 cdbd->rw_10.addr[3] = 0; 1354 cdbd->rw_10.reserved = 0; 1355 cdbd->rw_10.length[0] = 0; 1356 cdbd->rw_10.length[1] = cdbs->rw_6.length; 1357 cdbd->rw_10.control = cdbs->rw_6.control; 1358 break; 1359 default: 1360 break; 1361 } 1362 1363 /* 1364 * And dispatch 1365 */ 1366 xa->complete = ahci_atapi_complete_cmd; 1367 xa->atascsi_private = ccb; 1368 ccb->ccb_h.sim_priv.entries[0].ptr = ap; 1369 ahci_os_lock_port(ap); 1370 ahci_ata_cmd(xa); 1371 ahci_os_unlock_port(ap); 1372 } 1373 1374 /* 1375 * Completion function for ATA_PORT_T_DISK cache synchronization. 1376 */ 1377 static 1378 void 1379 ahci_ata_complete_disk_synchronize_cache(struct ata_xfer *xa) 1380 { 1381 union ccb *ccb = xa->atascsi_private; 1382 struct ccb_hdr *ccbh = &ccb->ccb_h; 1383 struct ahci_port *ap = ccb->ccb_h.sim_priv.entries[0].ptr; 1384 1385 switch(xa->state) { 1386 case ATA_S_COMPLETE: 1387 ccbh->status = CAM_REQ_CMP; 1388 ccb->csio.scsi_status = SCSI_STATUS_OK; 1389 break; 1390 case ATA_S_ERROR: 1391 kprintf("%s: synchronize_cache: error\n", 1392 ATANAME(ap, xa->at)); 1393 ccbh->status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID; 1394 ccb->csio.scsi_status = SCSI_STATUS_CHECK_COND; 1395 ahci_ata_dummy_sense(&ccb->csio.sense_data); 1396 break; 1397 case ATA_S_TIMEOUT: 1398 kprintf("%s: synchronize_cache: timeout\n", 1399 ATANAME(ap, xa->at)); 1400 ccbh->status = CAM_CMD_TIMEOUT; 1401 break; 1402 default: 1403 kprintf("%s: synchronize_cache: unknown state %d\n", 1404 ATANAME(ap, xa->at), xa->state); 1405 ccbh->status = CAM_REQ_CMP_ERR; 1406 break; 1407 } 1408 ahci_ata_put_xfer(xa); 1409 ahci_os_unlock_port(ap); 1410 xpt_done(ccb); 1411 ahci_os_lock_port(ap); 1412 } 1413 1414 /* 1415 * Completion function for ATA_PORT_T_DISK I/O 1416 */ 1417 static 1418 void 1419 ahci_ata_complete_disk_rw(struct ata_xfer *xa) 1420 { 1421 union ccb *ccb = xa->atascsi_private; 1422 struct ccb_hdr *ccbh = &ccb->ccb_h; 1423 struct ahci_port *ap = ccb->ccb_h.sim_priv.entries[0].ptr; 1424 1425 switch(xa->state) { 1426 case ATA_S_COMPLETE: 1427 ccbh->status = CAM_REQ_CMP; 1428 ccb->csio.scsi_status = SCSI_STATUS_OK; 1429 break; 1430 case ATA_S_ERROR: 1431 kprintf("%s: disk_rw: error\n", ATANAME(ap, xa->at)); 1432 ccbh->status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID; 1433 ccb->csio.scsi_status = SCSI_STATUS_CHECK_COND; 1434 ahci_ata_dummy_sense(&ccb->csio.sense_data); 1435 break; 1436 case ATA_S_TIMEOUT: 1437 kprintf("%s: disk_rw: timeout\n", ATANAME(ap, xa->at)); 1438 ccbh->status = CAM_CMD_TIMEOUT; 1439 ccb->csio.scsi_status = SCSI_STATUS_CHECK_COND; 1440 ahci_ata_dummy_sense(&ccb->csio.sense_data); 1441 break; 1442 default: 1443 kprintf("%s: disk_rw: unknown state %d\n", 1444 ATANAME(ap, xa->at), xa->state); 1445 ccbh->status = CAM_REQ_CMP_ERR; 1446 break; 1447 } 1448 ccb->csio.resid = xa->resid; 1449 ahci_ata_put_xfer(xa); 1450 ahci_os_unlock_port(ap); 1451 xpt_done(ccb); 1452 ahci_os_lock_port(ap); 1453 } 1454 1455 /* 1456 * Completion function for ATA_PORT_T_ATAPI I/O 1457 * 1458 * Sense data is returned in the rfis. 1459 */ 1460 static 1461 void 1462 ahci_atapi_complete_cmd(struct ata_xfer *xa) 1463 { 1464 union ccb *ccb = xa->atascsi_private; 1465 struct ccb_hdr *ccbh = &ccb->ccb_h; 1466 struct ahci_port *ap = ccb->ccb_h.sim_priv.entries[0].ptr; 1467 scsi_cdb_t cdb; 1468 1469 cdb = (void *)((ccb->ccb_h.flags & CAM_CDB_POINTER) ? 1470 ccb->csio.cdb_io.cdb_ptr : ccb->csio.cdb_io.cdb_bytes); 1471 1472 switch(xa->state) { 1473 case ATA_S_COMPLETE: 1474 ccbh->status = CAM_REQ_CMP; 1475 ccb->csio.scsi_status = SCSI_STATUS_OK; 1476 break; 1477 case ATA_S_ERROR: 1478 ccbh->status = CAM_SCSI_STATUS_ERROR; 1479 ccb->csio.scsi_status = SCSI_STATUS_CHECK_COND; 1480 ahci_ata_atapi_sense(&xa->rfis, &ccb->csio.sense_data); 1481 break; 1482 case ATA_S_TIMEOUT: 1483 kprintf("%s: cmd %d: timeout\n", 1484 PORTNAME(ap), cdb->generic.opcode); 1485 ccbh->status = CAM_CMD_TIMEOUT; 1486 ccb->csio.scsi_status = SCSI_STATUS_CHECK_COND; 1487 ahci_ata_dummy_sense(&ccb->csio.sense_data); 1488 break; 1489 default: 1490 kprintf("%s: cmd %d: unknown state %d\n", 1491 PORTNAME(ap), cdb->generic.opcode, xa->state); 1492 ccbh->status = CAM_REQ_CMP_ERR; 1493 break; 1494 } 1495 ccb->csio.resid = xa->resid; 1496 ahci_ata_put_xfer(xa); 1497 ahci_os_unlock_port(ap); 1498 xpt_done(ccb); 1499 ahci_os_lock_port(ap); 1500 } 1501 1502 /* 1503 * Construct dummy sense data for errors on DISKs 1504 */ 1505 static 1506 void 1507 ahci_ata_dummy_sense(struct scsi_sense_data *sense_data) 1508 { 1509 sense_data->error_code = SSD_ERRCODE_VALID | SSD_CURRENT_ERROR; 1510 sense_data->segment = 0; 1511 sense_data->flags = SSD_KEY_MEDIUM_ERROR; 1512 sense_data->info[0] = 0; 1513 sense_data->info[1] = 0; 1514 sense_data->info[2] = 0; 1515 sense_data->info[3] = 0; 1516 sense_data->extra_len = 0; 1517 } 1518 1519 /* 1520 * Construct atapi sense data for errors on ATAPI 1521 * 1522 * The ATAPI sense data is stored in the passed rfis and must be converted 1523 * to SCSI sense data. 1524 */ 1525 static 1526 void 1527 ahci_ata_atapi_sense(struct ata_fis_d2h *rfis, 1528 struct scsi_sense_data *sense_data) 1529 { 1530 sense_data->error_code = SSD_ERRCODE_VALID | SSD_CURRENT_ERROR; 1531 sense_data->segment = 0; 1532 sense_data->flags = (rfis->error & 0xF0) >> 4; 1533 if (rfis->error & 0x04) 1534 sense_data->flags |= SSD_KEY_ILLEGAL_REQUEST; 1535 if (rfis->error & 0x02) 1536 sense_data->flags |= SSD_EOM; 1537 if (rfis->error & 0x01) 1538 sense_data->flags |= SSD_ILI; 1539 sense_data->info[0] = 0; 1540 sense_data->info[1] = 0; 1541 sense_data->info[2] = 0; 1542 sense_data->info[3] = 0; 1543 sense_data->extra_len = 0; 1544 } 1545