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 /* 337 * Read capacity using SATA probe info. 338 */ 339 if (le16toh(at->at_identify.cmdset83) & 0x0400) { 340 /* LBA48 feature set supported */ 341 capacity = 0; 342 for (i = 3; i >= 0; --i) { 343 capacity <<= 16; 344 capacity += 345 le16toh(at->at_identify.addrsecxt[i]); 346 } 347 } else { 348 capacity = le16toh(at->at_identify.addrsec[1]); 349 capacity <<= 16; 350 capacity += le16toh(at->at_identify.addrsec[0]); 351 } 352 if (capacity == 0) 353 capacity = 1024 * 1024 / 512; 354 at->at_capacity = capacity; 355 if (atx == NULL) 356 ap->ap_probe = ATA_PROBE_GOOD; 357 358 capacity_bytes = capacity * 512; 359 360 /* 361 * Negotiate NCQ, throw away any ata_xfer's beyond the negotiated 362 * number of slots and limit the number of CAM ccb's to one less 363 * so we always have a slot available for recovery. 364 * 365 * NCQ is not used if ap_ncqdepth is 1 or the host controller does 366 * not support it, and in that case the driver can handle extra 367 * ccb's. 368 * 369 * NCQ is currently used only with direct-attached disks. It is 370 * not used with port multipliers or direct-attached ATAPI devices. 371 * 372 * Remember at least one extra CCB needs to be reserved for the 373 * error ccb. 374 */ 375 if ((ap->ap_sc->sc_cap & AHCI_REG_CAP_SNCQ) && 376 ap->ap_type == ATA_PORT_T_DISK && 377 (le16toh(at->at_identify.satacap) & (1 << 8))) { 378 at->at_ncqdepth = (le16toh(at->at_identify.qdepth) & 0x1F) + 1; 379 devncqdepth = at->at_ncqdepth; 380 if (at->at_ncqdepth > ap->ap_sc->sc_ncmds) 381 at->at_ncqdepth = ap->ap_sc->sc_ncmds; 382 if (at->at_ncqdepth > 1) { 383 for (i = 0; i < ap->ap_sc->sc_ncmds; ++i) { 384 xa = ahci_ata_get_xfer(ap, atx); 385 if (xa->tag < at->at_ncqdepth) { 386 xa->state = ATA_S_COMPLETE; 387 ahci_ata_put_xfer(xa); 388 } 389 } 390 if (at->at_ncqdepth >= ap->ap_sc->sc_ncmds) { 391 cam_sim_set_max_tags(ap->ap_sim, 392 at->at_ncqdepth - 1); 393 } 394 } 395 } else { 396 devncqdepth = 0; 397 } 398 399 model_len = sizeof(at->at_identify.model); 400 model_id = at->at_identify.model; 401 ahci_strip_string(&model_id, &model_len); 402 403 firmware_len = sizeof(at->at_identify.firmware); 404 firmware_id = at->at_identify.firmware; 405 ahci_strip_string(&firmware_id, &firmware_len); 406 407 serial_len = sizeof(at->at_identify.serial); 408 serial_id = at->at_identify.serial; 409 ahci_strip_string(&serial_id, &serial_len); 410 411 /* 412 * Generate informatiive strings. 413 * 414 * NOTE: We do not automatically set write caching, lookahead, 415 * or the security state for ATAPI devices. 416 */ 417 if (at->at_identify.cmdset82 & ATA_IDENTIFY_WRITECACHE) { 418 if (at->at_identify.features85 & ATA_IDENTIFY_WRITECACHE) 419 wcstr = "enabled"; 420 else if (at->at_type == ATA_PORT_T_ATAPI) 421 wcstr = "disabled"; 422 else 423 wcstr = "enabling"; 424 } else { 425 wcstr = "notsupp"; 426 } 427 428 if (at->at_identify.cmdset82 & ATA_IDENTIFY_LOOKAHEAD) { 429 if (at->at_identify.features85 & ATA_IDENTIFY_LOOKAHEAD) 430 rastr = "enabled"; 431 else if (at->at_type == ATA_PORT_T_ATAPI) 432 rastr = "disabled"; 433 else 434 rastr = "enabling"; 435 } else { 436 rastr = "notsupp"; 437 } 438 439 if (at->at_identify.cmdset82 & ATA_IDENTIFY_SECURITY) { 440 if (at->at_identify.securestatus & ATA_SECURE_FROZEN) 441 scstr = "frozen"; 442 else if (at->at_type == ATA_PORT_T_ATAPI) 443 scstr = "unfrozen"; 444 else if (AhciNoFeatures & (1 << ap->ap_num)) 445 scstr = "<disabled>"; 446 else 447 scstr = "freezing"; 448 } else { 449 scstr = "notsupp"; 450 } 451 452 kprintf("%s: Found %s \"%*.*s %*.*s\" serial=\"%*.*s\"\n" 453 "%s: tags=%d/%d satacap=%04x satafea=%04x NCQ=%s " 454 "capacity=%lld.%02dMB\n", 455 456 ATANAME(ap, atx), 457 type, 458 model_len, model_len, model_id, 459 firmware_len, firmware_len, firmware_id, 460 serial_len, serial_len, serial_id, 461 462 ATANAME(ap, atx), 463 devncqdepth, ap->ap_sc->sc_ncmds, 464 at->at_identify.satacap, 465 at->at_identify.satafsup, 466 (at->at_ncqdepth > 1 ? "YES" : "NO"), 467 (long long)capacity_bytes / (1024 * 1024), 468 (int)(capacity_bytes % (1024 * 1024)) * 100 / (1024 * 1024) 469 ); 470 kprintf("%s: f85=%04x f86=%04x f87=%04x WC=%s RA=%s SEC=%s\n", 471 ATANAME(ap, atx), 472 at->at_identify.features85, 473 at->at_identify.features86, 474 at->at_identify.features87, 475 wcstr, 476 rastr, 477 scstr 478 ); 479 480 /* 481 * Additional type-specific probing 482 */ 483 switch(at->at_type) { 484 case ATA_PORT_T_DISK: 485 error = ahci_cam_probe_disk(ap, atx); 486 break; 487 case ATA_PORT_T_ATAPI: 488 error = ahci_cam_probe_atapi(ap, atx); 489 break; 490 default: 491 error = EIO; 492 break; 493 } 494 err: 495 if (error) { 496 at->at_probe = ATA_PROBE_FAILED; 497 if (atx == NULL) 498 ap->ap_probe = at->at_probe; 499 } else { 500 at->at_probe = ATA_PROBE_GOOD; 501 if (atx == NULL) 502 ap->ap_probe = at->at_probe; 503 } 504 return (error); 505 } 506 507 /* 508 * DISK-specific probe after initial ident 509 */ 510 static int 511 ahci_cam_probe_disk(struct ahci_port *ap, struct ata_port *atx) 512 { 513 struct ata_port *at; 514 struct ata_xfer *xa; 515 516 at = atx ? atx : ap->ap_ata[0]; 517 518 /* 519 * Set dummy xfer mode 520 */ 521 ahci_set_xfer(ap, atx); 522 523 /* 524 * Enable write cache if supported 525 * 526 * NOTE: "WD My Book" external disk devices have a very poor 527 * daughter board between the the ESATA and the HD. Sending 528 * any ATA_C_SET_FEATURES commands will break the hardware port 529 * with a fatal protocol error. However, this device also 530 * indicates that WRITECACHE is already on and READAHEAD is 531 * not supported so we avoid the issue. 532 */ 533 if ((at->at_identify.cmdset82 & ATA_IDENTIFY_WRITECACHE) && 534 (at->at_identify.features85 & ATA_IDENTIFY_WRITECACHE) == 0) { 535 xa = ahci_ata_get_xfer(ap, atx); 536 xa->complete = ahci_ata_dummy_done; 537 xa->fis->command = ATA_C_SET_FEATURES; 538 xa->fis->features = ATA_SF_WRITECACHE_EN; 539 /* xa->fis->features = ATA_SF_LOOKAHEAD_EN; */ 540 xa->fis->flags = ATA_H2D_FLAGS_CMD | at->at_target; 541 xa->fis->device = 0; 542 xa->flags = ATA_F_PIO | ATA_F_POLL; 543 xa->timeout = 1000; 544 xa->datalen = 0; 545 if (ahci_ata_cmd(xa) == ATA_S_COMPLETE) 546 at->at_features |= ATA_PORT_F_WCACHE; 547 else 548 kprintf("%s: Unable to enable write-caching\n", 549 ATANAME(ap, atx)); 550 ahci_ata_put_xfer(xa); 551 } 552 553 /* 554 * Enable readahead if supported 555 */ 556 if ((at->at_identify.cmdset82 & ATA_IDENTIFY_LOOKAHEAD) && 557 (at->at_identify.features85 & ATA_IDENTIFY_LOOKAHEAD) == 0) { 558 xa = ahci_ata_get_xfer(ap, atx); 559 xa->complete = ahci_ata_dummy_done; 560 xa->fis->command = ATA_C_SET_FEATURES; 561 xa->fis->features = ATA_SF_LOOKAHEAD_EN; 562 xa->fis->flags = ATA_H2D_FLAGS_CMD | at->at_target; 563 xa->fis->device = 0; 564 xa->flags = ATA_F_PIO | ATA_F_POLL; 565 xa->timeout = 1000; 566 xa->datalen = 0; 567 if (ahci_ata_cmd(xa) == ATA_S_COMPLETE) 568 at->at_features |= ATA_PORT_F_RAHEAD; 569 else 570 kprintf("%s: Unable to enable read-ahead\n", 571 ATANAME(ap, atx)); 572 ahci_ata_put_xfer(xa); 573 } 574 575 /* 576 * FREEZE LOCK the device so malicious users can't lock it on us. 577 * As there is no harm in issuing this to devices that don't 578 * support the security feature set we just send it, and don't bother 579 * checking if the device sends a command abort to tell us it doesn't 580 * support it 581 */ 582 if ((at->at_identify.cmdset82 & ATA_IDENTIFY_SECURITY) && 583 (at->at_identify.securestatus & ATA_SECURE_FROZEN) == 0 && 584 (AhciNoFeatures & (1 << ap->ap_num)) == 0) { 585 xa = ahci_ata_get_xfer(ap, atx); 586 xa->complete = ahci_ata_dummy_done; 587 xa->fis->command = ATA_C_SEC_FREEZE_LOCK; 588 xa->fis->flags = ATA_H2D_FLAGS_CMD | at->at_target; 589 xa->flags = ATA_F_PIO | ATA_F_POLL; 590 xa->timeout = 1000; 591 xa->datalen = 0; 592 if (ahci_ata_cmd(xa) == ATA_S_COMPLETE) 593 at->at_features |= ATA_PORT_F_FRZLCK; 594 else 595 kprintf("%s: Unable to set security freeze\n", 596 ATANAME(ap, atx)); 597 ahci_ata_put_xfer(xa); 598 } 599 600 return (0); 601 } 602 603 /* 604 * ATAPI-specific probe after initial ident 605 */ 606 static int 607 ahci_cam_probe_atapi(struct ahci_port *ap, struct ata_port *atx) 608 { 609 ahci_set_xfer(ap, atx); 610 return(0); 611 } 612 613 /* 614 * Setting the transfer mode is irrelevant for the SATA transport 615 * but some (atapi) devices seem to need it anyway. In addition 616 * if we are running through a SATA->PATA converter for some reason 617 * beyond my comprehension we might have to set the mode. 618 * 619 * We only support DMA modes for SATA attached devices, so don't bother 620 * with legacy modes. 621 */ 622 static int 623 ahci_set_xfer(struct ahci_port *ap, struct ata_port *atx) 624 { 625 struct ata_port *at; 626 struct ata_xfer *xa; 627 u_int16_t mode; 628 u_int16_t mask; 629 630 at = atx ? atx : ap->ap_ata[0]; 631 632 /* 633 * Figure out the supported UDMA mode. Ignore other legacy modes. 634 */ 635 mask = le16toh(at->at_identify.ultradma); 636 if ((mask & 0xFF) == 0 || mask == 0xFFFF) 637 return(0); 638 mask &= 0xFF; 639 mode = 0x4F; 640 while ((mask & 0x8000) == 0) { 641 mask <<= 1; 642 --mode; 643 } 644 645 /* 646 * SATA atapi devices often still report a dma mode, even though 647 * it is irrelevant for SATA transport. It is also possible that 648 * we are running through a SATA->PATA converter and seeing the 649 * PATA dma mode. 650 * 651 * In this case the device may require a (dummy) SETXFER to be 652 * sent before it will work properly. 653 */ 654 xa = ahci_ata_get_xfer(ap, atx); 655 xa->complete = ahci_ata_dummy_done; 656 xa->fis->command = ATA_C_SET_FEATURES; 657 xa->fis->features = ATA_SF_SETXFER; 658 xa->fis->flags = ATA_H2D_FLAGS_CMD | at->at_target; 659 xa->fis->sector_count = mode; 660 xa->flags = ATA_F_PIO | ATA_F_POLL; 661 xa->timeout = 1000; 662 xa->datalen = 0; 663 if (ahci_ata_cmd(xa) != ATA_S_COMPLETE) { 664 kprintf("%s: Unable to set dummy xfer mode \n", 665 ATANAME(ap, atx)); 666 } else if (bootverbose) { 667 kprintf("%s: Set dummy xfer mode to %02x\n", 668 ATANAME(ap, atx), mode); 669 } 670 ahci_ata_put_xfer(xa); 671 return(0); 672 } 673 674 /* 675 * Fix byte ordering so buffers can be accessed as 676 * strings. 677 */ 678 static void 679 ata_fix_identify(struct ata_identify *id) 680 { 681 u_int16_t *swap; 682 int i; 683 684 swap = (u_int16_t *)id->serial; 685 for (i = 0; i < sizeof(id->serial) / sizeof(u_int16_t); i++) 686 swap[i] = bswap16(swap[i]); 687 688 swap = (u_int16_t *)id->firmware; 689 for (i = 0; i < sizeof(id->firmware) / sizeof(u_int16_t); i++) 690 swap[i] = bswap16(swap[i]); 691 692 swap = (u_int16_t *)id->model; 693 for (i = 0; i < sizeof(id->model) / sizeof(u_int16_t); i++) 694 swap[i] = bswap16(swap[i]); 695 } 696 697 /* 698 * Dummy done callback for xa. 699 */ 700 static void 701 ahci_ata_dummy_done(struct ata_xfer *xa) 702 { 703 } 704 705 /* 706 * Use an engineering request to initiate a target scan for devices 707 * behind a port multiplier. 708 * 709 * An asynchronous bus scan is used to avoid reentrancy issues. 710 */ 711 static void 712 ahci_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb) 713 { 714 struct ahci_port *ap = ccb->ccb_h.sim_priv.entries[0].ptr; 715 716 if (ccb->ccb_h.func_code == XPT_SCAN_BUS) { 717 ap->ap_flags &= ~AP_F_SCAN_RUNNING; 718 if (ap->ap_flags & AP_F_SCAN_REQUESTED) { 719 ap->ap_flags &= ~AP_F_SCAN_REQUESTED; 720 ahci_cam_rescan(ap); 721 } 722 ap->ap_flags |= AP_F_SCAN_COMPLETED; 723 wakeup(&ap->ap_flags); 724 } 725 xpt_free_ccb(ccb); 726 } 727 728 static void 729 ahci_cam_rescan(struct ahci_port *ap) 730 { 731 struct cam_path *path; 732 union ccb *ccb; 733 int status; 734 int i; 735 736 if (ap->ap_flags & AP_F_SCAN_RUNNING) { 737 ap->ap_flags |= AP_F_SCAN_REQUESTED; 738 return; 739 } 740 ap->ap_flags |= AP_F_SCAN_RUNNING; 741 for (i = 0; i < AHCI_MAX_PMPORTS; ++i) { 742 ap->ap_ata[i]->at_features |= ATA_PORT_F_RESCAN; 743 } 744 745 status = xpt_create_path(&path, xpt_periph, cam_sim_path(ap->ap_sim), 746 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); 747 if (status != CAM_REQ_CMP) 748 return; 749 750 ccb = xpt_alloc_ccb(); 751 xpt_setup_ccb(&ccb->ccb_h, path, 5); /* 5 = low priority */ 752 ccb->ccb_h.func_code = XPT_ENG_EXEC; 753 ccb->ccb_h.cbfcnp = ahci_cam_rescan_callback; 754 ccb->ccb_h.sim_priv.entries[0].ptr = ap; 755 ccb->crcn.flags = CAM_FLAG_NONE; 756 xpt_action_async(ccb); 757 } 758 759 static void 760 ahci_xpt_rescan(struct ahci_port *ap) 761 { 762 struct cam_path *path; 763 union ccb *ccb; 764 int status; 765 766 status = xpt_create_path(&path, xpt_periph, cam_sim_path(ap->ap_sim), 767 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); 768 if (status != CAM_REQ_CMP) 769 return; 770 771 ccb = xpt_alloc_ccb(); 772 xpt_setup_ccb(&ccb->ccb_h, path, 5); /* 5 = low priority */ 773 ccb->ccb_h.func_code = XPT_SCAN_BUS; 774 ccb->ccb_h.cbfcnp = ahci_cam_rescan_callback; 775 ccb->ccb_h.sim_priv.entries[0].ptr = ap; 776 ccb->crcn.flags = CAM_FLAG_NONE; 777 xpt_action_async(ccb); 778 } 779 780 /* 781 * Action function - dispatch command 782 */ 783 static 784 void 785 ahci_xpt_action(struct cam_sim *sim, union ccb *ccb) 786 { 787 struct ahci_port *ap; 788 struct ata_port *at, *atx; 789 struct ccb_hdr *ccbh; 790 791 /* XXX lock */ 792 ap = cam_sim_softc(sim); 793 atx = NULL; 794 KKASSERT(ap != NULL); 795 ccbh = &ccb->ccb_h; 796 797 /* 798 * Early failure checks. These checks do not apply to XPT_PATH_INQ, 799 * otherwise the bus rescan will not remove the dead devices when 800 * unplugging a PM. 801 * 802 * For non-wildcards we have one target (0) and one lun (0), 803 * unless we have a port multiplier. 804 * 805 * A wildcard target indicates only the general bus is being 806 * probed. 807 * 808 * Calculate at and atx. at is always non-NULL. atx is only 809 * NULL for direct-attached devices. It will be non-NULL for 810 * devices behind a port multiplier. 811 * 812 * XXX What do we do with a LUN wildcard? 813 */ 814 if (ccbh->target_id != CAM_TARGET_WILDCARD && 815 ccbh->func_code != XPT_PATH_INQ) { 816 if (ap->ap_type == ATA_PORT_T_NONE) { 817 ccbh->status = CAM_DEV_NOT_THERE; 818 xpt_done(ccb); 819 return; 820 } 821 if (ccbh->target_id < 0 || ccbh->target_id >= ap->ap_pmcount) { 822 ccbh->status = CAM_DEV_NOT_THERE; 823 xpt_done(ccb); 824 return; 825 } 826 at = ap->ap_ata[ccbh->target_id]; 827 if (ap->ap_type == ATA_PORT_T_PM) 828 atx = at; 829 830 if (ccbh->target_lun != CAM_LUN_WILDCARD && ccbh->target_lun) { 831 ccbh->status = CAM_DEV_NOT_THERE; 832 xpt_done(ccb); 833 return; 834 } 835 } else { 836 at = ap->ap_ata[0]; 837 } 838 839 /* 840 * Switch on the meta XPT command 841 */ 842 switch(ccbh->func_code) { 843 case XPT_ENG_EXEC: 844 /* 845 * This routine is called after a port multiplier has been 846 * probed. 847 */ 848 ccbh->status = CAM_REQ_CMP; 849 ahci_os_lock_port(ap); 850 ahci_port_state_machine(ap, 0); 851 ahci_os_unlock_port(ap); 852 xpt_done(ccb); 853 ahci_xpt_rescan(ap); 854 break; 855 case XPT_PATH_INQ: 856 /* 857 * This command always succeeds, otherwise the bus scan 858 * will not detach dead devices. 859 */ 860 ccb->cpi.version_num = 1; 861 ccb->cpi.hba_inquiry = 0; 862 ccb->cpi.target_sprt = 0; 863 ccb->cpi.hba_misc = PIM_SEQSCAN; 864 ccb->cpi.hba_eng_cnt = 0; 865 bzero(ccb->cpi.vuhba_flags, sizeof(ccb->cpi.vuhba_flags)); 866 ccb->cpi.max_target = AHCI_MAX_PMPORTS - 1; 867 ccb->cpi.max_lun = 0; 868 ccb->cpi.async_flags = 0; 869 ccb->cpi.hpath_id = 0; 870 ccb->cpi.initiator_id = AHCI_MAX_PMPORTS - 1; 871 ccb->cpi.unit_number = cam_sim_unit(sim); 872 ccb->cpi.bus_id = cam_sim_bus(sim); 873 ccb->cpi.base_transfer_speed = 150000; 874 ccb->cpi.transport = XPORT_SATA; 875 ccb->cpi.transport_version = 1; 876 ccb->cpi.protocol = PROTO_SCSI; 877 ccb->cpi.protocol_version = SCSI_REV_2; 878 ccb->cpi.maxio = AHCI_MAXPHYS; 879 880 ccbh->status = CAM_REQ_CMP; 881 if (ccbh->target_id == CAM_TARGET_WILDCARD) { 882 ahci_os_lock_port(ap); 883 ahci_port_state_machine(ap, 0); 884 ahci_os_unlock_port(ap); 885 } else { 886 switch(ahci_pread(ap, AHCI_PREG_SSTS) & 887 AHCI_PREG_SSTS_SPD) { 888 case AHCI_PREG_SSTS_SPD_GEN1: 889 ccb->cpi.base_transfer_speed = 150000; 890 break; 891 case AHCI_PREG_SSTS_SPD_GEN2: 892 ccb->cpi.base_transfer_speed = 300000; 893 break; 894 case AHCI_PREG_SSTS_SPD_GEN3: 895 ccb->cpi.base_transfer_speed = 600000; 896 break; 897 default: 898 /* unknown */ 899 ccb->cpi.base_transfer_speed = 1000; 900 break; 901 } 902 #if 0 903 if (ap->ap_type == ATA_PORT_T_NONE) 904 ccbh->status = CAM_DEV_NOT_THERE; 905 #endif 906 } 907 xpt_done(ccb); 908 break; 909 case XPT_RESET_DEV: 910 ahci_os_lock_port(ap); 911 if (ap->ap_type == ATA_PORT_T_NONE) { 912 ccbh->status = CAM_DEV_NOT_THERE; 913 } else { 914 ahci_port_reset(ap, atx, 0); 915 ccbh->status = CAM_REQ_CMP; 916 } 917 ahci_os_unlock_port(ap); 918 xpt_done(ccb); 919 break; 920 case XPT_RESET_BUS: 921 ahci_os_lock_port(ap); 922 ahci_port_reset(ap, NULL, 1); 923 ahci_os_unlock_port(ap); 924 ccbh->status = CAM_REQ_CMP; 925 xpt_done(ccb); 926 break; 927 case XPT_SET_TRAN_SETTINGS: 928 ccbh->status = CAM_FUNC_NOTAVAIL; 929 xpt_done(ccb); 930 break; 931 case XPT_GET_TRAN_SETTINGS: 932 ccb->cts.protocol = PROTO_SCSI; 933 ccb->cts.protocol_version = SCSI_REV_2; 934 ccb->cts.transport = XPORT_SATA; 935 ccb->cts.transport_version = XPORT_VERSION_UNSPECIFIED; 936 ccb->cts.proto_specific.valid = 0; 937 ccb->cts.xport_specific.valid = 0; 938 ccbh->status = CAM_REQ_CMP; 939 xpt_done(ccb); 940 break; 941 case XPT_CALC_GEOMETRY: 942 cam_calc_geometry(&ccb->ccg, 1); 943 xpt_done(ccb); 944 break; 945 case XPT_SCSI_IO: 946 /* 947 * Our parallel startup code might have only probed through 948 * to the IDENT, so do the last step if necessary. 949 */ 950 if (at->at_probe == ATA_PROBE_NEED_IDENT) 951 ahci_cam_probe(ap, atx); 952 if (at->at_probe != ATA_PROBE_GOOD) { 953 ccbh->status = CAM_DEV_NOT_THERE; 954 xpt_done(ccb); 955 break; 956 } 957 switch(at->at_type) { 958 case ATA_PORT_T_DISK: 959 ahci_xpt_scsi_disk_io(ap, atx, ccb); 960 break; 961 case ATA_PORT_T_ATAPI: 962 ahci_xpt_scsi_atapi_io(ap, atx, ccb); 963 break; 964 default: 965 ccbh->status = CAM_REQ_INVALID; 966 xpt_done(ccb); 967 break; 968 } 969 break; 970 case XPT_TRIM: 971 { 972 scsi_cdb_t cdb; 973 struct ccb_scsiio *csio; 974 csio = &ccb->csio; 975 cdb = (void *)((ccbh->flags & CAM_CDB_POINTER) ? 976 csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes); 977 cdb->generic.opcode = TRIM; 978 ahci_xpt_scsi_disk_io(ap, atx, ccb); 979 break; 980 } 981 default: 982 ccbh->status = CAM_REQ_INVALID; 983 xpt_done(ccb); 984 break; 985 } 986 } 987 988 /* 989 * Poll function. 990 * 991 * Generally this function gets called heavily when interrupts might be 992 * non-operational, during a halt/reboot or panic. 993 */ 994 static 995 void 996 ahci_xpt_poll(struct cam_sim *sim) 997 { 998 struct ahci_port *ap; 999 1000 ap = cam_sim_softc(sim); 1001 crit_enter(); 1002 ahci_os_lock_port(ap); 1003 ahci_port_intr(ap, 1); 1004 ahci_os_unlock_port(ap); 1005 crit_exit(); 1006 } 1007 1008 /* 1009 * Convert the SCSI command in ccb to an ata_xfer command in xa 1010 * for ATA_PORT_T_DISK operations. Set the completion function 1011 * to convert the response back, then dispatch to the OpenBSD AHCI 1012 * layer. 1013 * 1014 * AHCI DISK commands only support a limited command set, and we 1015 * fake additional commands to make it play nice with the CAM subsystem. 1016 */ 1017 static 1018 void 1019 ahci_xpt_scsi_disk_io(struct ahci_port *ap, struct ata_port *atx, 1020 union ccb *ccb) 1021 { 1022 struct ccb_hdr *ccbh; 1023 struct ccb_scsiio *csio; 1024 struct ata_xfer *xa; 1025 struct ata_port *at; 1026 struct ata_fis_h2d *fis; 1027 struct ata_pass_12 *atp12; 1028 struct ata_pass_16 *atp16; 1029 scsi_cdb_t cdb; 1030 union scsi_data *rdata; 1031 int rdata_len; 1032 u_int64_t capacity; 1033 u_int64_t lba; 1034 u_int32_t count; 1035 1036 ccbh = &ccb->csio.ccb_h; 1037 csio = &ccb->csio; 1038 at = atx ? atx : ap->ap_ata[0]; 1039 1040 /* 1041 * XXX not passing NULL at for direct attach! 1042 */ 1043 xa = ahci_ata_get_xfer(ap, atx); 1044 rdata = (void *)csio->data_ptr; 1045 rdata_len = csio->dxfer_len; 1046 1047 /* 1048 * Build the FIS or process the csio to completion. 1049 */ 1050 cdb = (void *)((ccbh->flags & CAM_CDB_POINTER) ? 1051 csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes); 1052 1053 switch(cdb->generic.opcode) { 1054 case REQUEST_SENSE: 1055 /* 1056 * Auto-sense everything, so explicit sense requests 1057 * return no-sense. 1058 */ 1059 ccbh->status = CAM_SCSI_STATUS_ERROR; 1060 break; 1061 case INQUIRY: 1062 /* 1063 * Inquiry supported features 1064 * 1065 * [opcode, byte2, page_code, length, control] 1066 */ 1067 if (cdb->inquiry.byte2 & SI_EVPD) { 1068 ahci_xpt_page_inquiry(ap, at, ccb); 1069 } else { 1070 bzero(rdata, rdata_len); 1071 if (rdata_len < SHORT_INQUIRY_LENGTH) { 1072 ccbh->status = CAM_CCB_LEN_ERR; 1073 break; 1074 } 1075 if (rdata_len > sizeof(rdata->inquiry_data)) 1076 rdata_len = sizeof(rdata->inquiry_data); 1077 rdata->inquiry_data.device = T_DIRECT; 1078 rdata->inquiry_data.version = SCSI_REV_SPC2; 1079 rdata->inquiry_data.response_format = 2; 1080 rdata->inquiry_data.additional_length = 32; 1081 bcopy("SATA ", rdata->inquiry_data.vendor, 8); 1082 bcopy(at->at_identify.model, 1083 rdata->inquiry_data.product, 1084 sizeof(rdata->inquiry_data.product)); 1085 bcopy(at->at_identify.firmware, 1086 rdata->inquiry_data.revision, 1087 sizeof(rdata->inquiry_data.revision)); 1088 ccbh->status = CAM_REQ_CMP; 1089 } 1090 1091 /* 1092 * Use the vendor specific area to set the TRIM status 1093 * for scsi_da 1094 */ 1095 if (at->at_identify.support_dsm) { 1096 rdata->inquiry_data.vendor_specific1[0] = 1097 at->at_identify.support_dsm &ATA_SUPPORT_DSM_TRIM; 1098 rdata->inquiry_data.vendor_specific1[1] = 1099 at->at_identify.max_dsm_blocks; 1100 } 1101 break; 1102 case READ_CAPACITY_16: 1103 if (cdb->read_capacity_16.service_action != SRC16_SERVICE_ACTION) { 1104 ccbh->status = CAM_REQ_INVALID; 1105 break; 1106 } 1107 if (rdata_len < sizeof(rdata->read_capacity_data_16)) { 1108 ccbh->status = CAM_CCB_LEN_ERR; 1109 break; 1110 } 1111 /* fall through */ 1112 case READ_CAPACITY: 1113 if (rdata_len < sizeof(rdata->read_capacity_data)) { 1114 ccbh->status = CAM_CCB_LEN_ERR; 1115 break; 1116 } 1117 1118 capacity = at->at_capacity; 1119 1120 bzero(rdata, rdata_len); 1121 if (cdb->generic.opcode == READ_CAPACITY) { 1122 rdata_len = sizeof(rdata->read_capacity_data); 1123 if (capacity > 0xFFFFFFFFU) { 1124 /* 1125 * Set capacity to 0 so maxsector winds up 1126 * being 0xffffffff in CAM in order to trigger 1127 * DA_STATE_PROBE2. 1128 */ 1129 capacity = 0; 1130 } 1131 bzero(&rdata->read_capacity_data, rdata_len); 1132 scsi_ulto4b((u_int32_t)capacity - 1, 1133 rdata->read_capacity_data.addr); 1134 scsi_ulto4b(512, rdata->read_capacity_data.length); 1135 } else { 1136 rdata_len = sizeof(rdata->read_capacity_data_16); 1137 bzero(&rdata->read_capacity_data_16, rdata_len); 1138 scsi_u64to8b(capacity - 1, 1139 rdata->read_capacity_data_16.addr); 1140 scsi_ulto4b(512, rdata->read_capacity_data_16.length); 1141 } 1142 ccbh->status = CAM_REQ_CMP; 1143 break; 1144 case SYNCHRONIZE_CACHE: 1145 /* 1146 * Synchronize cache. Specification says this can take 1147 * greater then 30 seconds so give it at least 45. 1148 */ 1149 fis = xa->fis; 1150 fis->flags = ATA_H2D_FLAGS_CMD; 1151 fis->command = ATA_C_FLUSH_CACHE; 1152 fis->device = 0; 1153 if (xa->timeout < 45000) 1154 xa->timeout = 45000; 1155 xa->datalen = 0; 1156 xa->flags = 0; 1157 xa->complete = ahci_ata_complete_disk_synchronize_cache; 1158 break; 1159 case TRIM: 1160 fis = xa->fis; 1161 fis->command = ATA_C_DATA_SET_MANAGEMENT; 1162 fis->features = (u_int8_t)ATA_SF_DSM_TRIM; 1163 fis->features_exp = (u_int8_t)(ATA_SF_DSM_TRIM>> 8); 1164 1165 xa->flags = ATA_F_WRITE; 1166 fis->flags = ATA_H2D_FLAGS_CMD; 1167 1168 xa->data = csio->data_ptr; 1169 xa->datalen = csio->dxfer_len; 1170 xa->timeout = ccbh->timeout*50; /* milliseconds */ 1171 1172 fis->sector_count =(u_int8_t)(xa->datalen/512); 1173 fis->sector_count_exp =(u_int8_t)((xa->datalen/512)>>8); 1174 1175 lba = 0; 1176 fis->lba_low = (u_int8_t)lba; 1177 fis->lba_mid = (u_int8_t)(lba >> 8); 1178 fis->lba_high = (u_int8_t)(lba >> 16); 1179 fis->lba_low_exp = (u_int8_t)(lba >> 24); 1180 fis->lba_mid_exp = (u_int8_t)(lba >> 32); 1181 fis->lba_high_exp = (u_int8_t)(lba >> 40); 1182 1183 fis->device = ATA_H2D_DEVICE_LBA; 1184 xa->data = csio->data_ptr; 1185 1186 xa->complete = ahci_ata_complete_disk_rw; 1187 ccbh->status = CAM_REQ_INPROG; 1188 break; 1189 case TEST_UNIT_READY: 1190 case START_STOP_UNIT: 1191 case PREVENT_ALLOW: 1192 /* 1193 * Just silently return success 1194 */ 1195 ccbh->status = CAM_REQ_CMP; 1196 rdata_len = 0; 1197 break; 1198 case ATA_PASS_12: 1199 atp12 = &cdb->ata_pass_12; 1200 fis = xa->fis; 1201 /* 1202 * Figure out the flags to be used, depending on the direction of the 1203 * CAM request. 1204 */ 1205 switch (ccbh->flags & CAM_DIR_MASK) { 1206 case CAM_DIR_IN: 1207 xa->flags = ATA_F_READ; 1208 break; 1209 case CAM_DIR_OUT: 1210 xa->flags = ATA_F_WRITE; 1211 break; 1212 default: 1213 xa->flags = 0; 1214 } 1215 xa->flags |= ATA_F_POLL | ATA_F_EXCLUSIVE; 1216 xa->data = csio->data_ptr; 1217 xa->datalen = csio->dxfer_len; 1218 xa->complete = ahci_ata_complete_disk_rw; 1219 xa->timeout = ccbh->timeout; 1220 1221 /* 1222 * Populate the fis from the information we received through CAM 1223 * ATA passthrough. 1224 */ 1225 fis->flags = ATA_H2D_FLAGS_CMD; /* maybe also atp12->flags ? */ 1226 fis->features = atp12->features; 1227 fis->sector_count = atp12->sector_count; 1228 fis->lba_low = atp12->lba_low; 1229 fis->lba_mid = atp12->lba_mid; 1230 fis->lba_high = atp12->lba_high; 1231 fis->device = atp12->device; /* maybe always 0? */ 1232 fis->command = atp12->command; 1233 fis->control = atp12->control; 1234 1235 /* 1236 * Mark as in progress so it is sent to the device. 1237 */ 1238 ccbh->status = CAM_REQ_INPROG; 1239 break; 1240 case ATA_PASS_16: 1241 atp16 = &cdb->ata_pass_16; 1242 fis = xa->fis; 1243 /* 1244 * Figure out the flags to be used, depending on the direction of the 1245 * CAM request. 1246 */ 1247 switch (ccbh->flags & CAM_DIR_MASK) { 1248 case CAM_DIR_IN: 1249 xa->flags = ATA_F_READ; 1250 break; 1251 case CAM_DIR_OUT: 1252 xa->flags = ATA_F_WRITE; 1253 break; 1254 default: 1255 xa->flags = 0; 1256 } 1257 xa->flags |= ATA_F_POLL | ATA_F_EXCLUSIVE; 1258 xa->data = csio->data_ptr; 1259 xa->datalen = csio->dxfer_len; 1260 xa->complete = ahci_ata_complete_disk_rw; 1261 xa->timeout = ccbh->timeout; 1262 1263 /* 1264 * Populate the fis from the information we received through CAM 1265 * ATA passthrough. 1266 */ 1267 fis->flags = ATA_H2D_FLAGS_CMD; /* maybe also atp16->flags ? */ 1268 fis->features = atp16->features; 1269 fis->features_exp = atp16->features_ext; 1270 fis->sector_count = atp16->sector_count; 1271 fis->sector_count_exp = atp16->sector_count_ext; 1272 fis->lba_low = atp16->lba_low; 1273 fis->lba_low_exp = atp16->lba_low_ext; 1274 fis->lba_mid = atp16->lba_mid; 1275 fis->lba_mid_exp = atp16->lba_mid_ext; 1276 fis->lba_high = atp16->lba_high; 1277 fis->lba_mid_exp = atp16->lba_mid_ext; 1278 fis->device = atp16->device; /* maybe always 0? */ 1279 fis->command = atp16->command; 1280 1281 /* 1282 * Mark as in progress so it is sent to the device. 1283 */ 1284 ccbh->status = CAM_REQ_INPROG; 1285 break; 1286 default: 1287 switch(cdb->generic.opcode) { 1288 case READ_6: 1289 lba = scsi_3btoul(cdb->rw_6.addr) & 0x1FFFFF; 1290 count = cdb->rw_6.length ? cdb->rw_6.length : 0x100; 1291 xa->flags = ATA_F_READ; 1292 break; 1293 case READ_10: 1294 lba = scsi_4btoul(cdb->rw_10.addr); 1295 count = scsi_2btoul(cdb->rw_10.length); 1296 xa->flags = ATA_F_READ; 1297 break; 1298 case READ_12: 1299 lba = scsi_4btoul(cdb->rw_12.addr); 1300 count = scsi_4btoul(cdb->rw_12.length); 1301 xa->flags = ATA_F_READ; 1302 break; 1303 case READ_16: 1304 lba = scsi_8btou64(cdb->rw_16.addr); 1305 count = scsi_4btoul(cdb->rw_16.length); 1306 xa->flags = ATA_F_READ; 1307 break; 1308 case WRITE_6: 1309 lba = scsi_3btoul(cdb->rw_6.addr) & 0x1FFFFF; 1310 count = cdb->rw_6.length ? cdb->rw_6.length : 0x100; 1311 xa->flags = ATA_F_WRITE; 1312 break; 1313 case WRITE_10: 1314 lba = scsi_4btoul(cdb->rw_10.addr); 1315 count = scsi_2btoul(cdb->rw_10.length); 1316 xa->flags = ATA_F_WRITE; 1317 break; 1318 case WRITE_12: 1319 lba = scsi_4btoul(cdb->rw_12.addr); 1320 count = scsi_4btoul(cdb->rw_12.length); 1321 xa->flags = ATA_F_WRITE; 1322 break; 1323 case WRITE_16: 1324 lba = scsi_8btou64(cdb->rw_16.addr); 1325 count = scsi_4btoul(cdb->rw_16.length); 1326 xa->flags = ATA_F_WRITE; 1327 break; 1328 default: 1329 ccbh->status = CAM_REQ_INVALID; 1330 break; 1331 } 1332 if (ccbh->status != CAM_REQ_INPROG) 1333 break; 1334 1335 fis = xa->fis; 1336 fis->flags = ATA_H2D_FLAGS_CMD; 1337 fis->lba_low = (u_int8_t)lba; 1338 fis->lba_mid = (u_int8_t)(lba >> 8); 1339 fis->lba_high = (u_int8_t)(lba >> 16); 1340 fis->device = ATA_H2D_DEVICE_LBA; 1341 1342 /* 1343 * NCQ only for direct-attached disks, do not currently 1344 * try to use NCQ with port multipliers. 1345 */ 1346 if (at->at_ncqdepth > 1 && 1347 ap->ap_type == ATA_PORT_T_DISK && 1348 (ap->ap_sc->sc_cap & AHCI_REG_CAP_SNCQ) && 1349 (ccbh->flags & CAM_POLLED) == 0) { 1350 /* 1351 * Use NCQ - always uses 48 bit addressing 1352 */ 1353 xa->flags |= ATA_F_NCQ; 1354 fis->command = (xa->flags & ATA_F_WRITE) ? 1355 ATA_C_WRITE_FPDMA : ATA_C_READ_FPDMA; 1356 fis->lba_low_exp = (u_int8_t)(lba >> 24); 1357 fis->lba_mid_exp = (u_int8_t)(lba >> 32); 1358 fis->lba_high_exp = (u_int8_t)(lba >> 40); 1359 fis->sector_count = xa->tag << 3; 1360 fis->features = (u_int8_t)count; 1361 fis->features_exp = (u_int8_t)(count >> 8); 1362 } else if (count > 0x100 || lba > 0x0FFFFFFFU) { 1363 /* 1364 * Use LBA48 1365 */ 1366 fis->command = (xa->flags & ATA_F_WRITE) ? 1367 ATA_C_WRITEDMA_EXT : ATA_C_READDMA_EXT; 1368 fis->lba_low_exp = (u_int8_t)(lba >> 24); 1369 fis->lba_mid_exp = (u_int8_t)(lba >> 32); 1370 fis->lba_high_exp = (u_int8_t)(lba >> 40); 1371 fis->sector_count = (u_int8_t)count; 1372 fis->sector_count_exp = (u_int8_t)(count >> 8); 1373 } else { 1374 /* 1375 * Use LBA 1376 * 1377 * NOTE: 256 sectors is supported, stored as 0. 1378 */ 1379 fis->command = (xa->flags & ATA_F_WRITE) ? 1380 ATA_C_WRITEDMA : ATA_C_READDMA; 1381 fis->device |= (u_int8_t)(lba >> 24) & 0x0F; 1382 fis->sector_count = (u_int8_t)count; 1383 } 1384 1385 xa->data = csio->data_ptr; 1386 xa->datalen = csio->dxfer_len; 1387 xa->complete = ahci_ata_complete_disk_rw; 1388 xa->timeout = ccbh->timeout; /* milliseconds */ 1389 #if 0 1390 if (xa->timeout > 10000) /* XXX - debug */ 1391 xa->timeout = 10000; 1392 #endif 1393 if (ccbh->flags & CAM_POLLED) 1394 xa->flags |= ATA_F_POLL; 1395 break; 1396 } 1397 1398 /* 1399 * If the request is still in progress the xa and FIS have 1400 * been set up (except for the PM target), and must be dispatched. 1401 * Otherwise the request was completed. 1402 */ 1403 if (ccbh->status == CAM_REQ_INPROG) { 1404 KKASSERT(xa->complete != NULL); 1405 xa->atascsi_private = ccb; 1406 ccb->ccb_h.sim_priv.entries[0].ptr = ap; 1407 ahci_os_lock_port(ap); 1408 xa->fis->flags |= at->at_target; 1409 ahci_ata_cmd(xa); 1410 ahci_os_unlock_port(ap); 1411 } else { 1412 ahci_ata_put_xfer(xa); 1413 xpt_done(ccb); 1414 } 1415 } 1416 1417 /* 1418 * Convert the SCSI command in ccb to an ata_xfer command in xa 1419 * for ATA_PORT_T_ATAPI operations. Set the completion function 1420 * to convert the response back, then dispatch to the OpenBSD AHCI 1421 * layer. 1422 */ 1423 static 1424 void 1425 ahci_xpt_scsi_atapi_io(struct ahci_port *ap, struct ata_port *atx, 1426 union ccb *ccb) 1427 { 1428 struct ccb_hdr *ccbh; 1429 struct ccb_scsiio *csio; 1430 struct ata_xfer *xa; 1431 struct ata_fis_h2d *fis; 1432 scsi_cdb_t cdbs; 1433 scsi_cdb_t cdbd; 1434 int flags; 1435 struct ata_port *at; 1436 1437 ccbh = &ccb->csio.ccb_h; 1438 csio = &ccb->csio; 1439 at = atx ? atx : ap->ap_ata[0]; 1440 1441 switch (ccbh->flags & CAM_DIR_MASK) { 1442 case CAM_DIR_IN: 1443 flags = ATA_F_PACKET | ATA_F_READ; 1444 break; 1445 case CAM_DIR_OUT: 1446 flags = ATA_F_PACKET | ATA_F_WRITE; 1447 break; 1448 case CAM_DIR_NONE: 1449 flags = ATA_F_PACKET; 1450 break; 1451 default: 1452 ccbh->status = CAM_REQ_INVALID; 1453 xpt_done(ccb); 1454 return; 1455 /* NOT REACHED */ 1456 } 1457 1458 /* 1459 * Special handling to get the rfis back into host memory while 1460 * still allowing the chip to run commands in parallel to 1461 * ATAPI devices behind a PM. 1462 */ 1463 flags |= ATA_F_AUTOSENSE; 1464 1465 /* 1466 * The command has to fit in the packet command buffer. 1467 */ 1468 if (csio->cdb_len < 6 || csio->cdb_len > 16) { 1469 ccbh->status = CAM_CCB_LEN_ERR; 1470 xpt_done(ccb); 1471 return; 1472 } 1473 1474 /* 1475 * Initialize the XA and FIS. It is unclear how much of 1476 * this has to mimic the equivalent ATA command. 1477 * 1478 * XXX not passing NULL at for direct attach! 1479 */ 1480 xa = ahci_ata_get_xfer(ap, atx); 1481 fis = xa->fis; 1482 1483 fis->flags = ATA_H2D_FLAGS_CMD | at->at_target; 1484 fis->command = ATA_C_PACKET; 1485 fis->device = ATA_H2D_DEVICE_LBA; 1486 fis->sector_count = xa->tag << 3; 1487 if (flags & (ATA_F_READ | ATA_F_WRITE)) { 1488 if (flags & ATA_F_WRITE) { 1489 fis->features = ATA_H2D_FEATURES_DMA | 1490 ATA_H2D_FEATURES_DIR_WRITE; 1491 } else { 1492 fis->features = ATA_H2D_FEATURES_DMA | 1493 ATA_H2D_FEATURES_DIR_READ; 1494 } 1495 } else { 1496 fis->lba_mid = 0; 1497 fis->lba_high = 0; 1498 } 1499 fis->control = ATA_FIS_CONTROL_4BIT; 1500 1501 xa->flags = flags; 1502 xa->data = csio->data_ptr; 1503 xa->datalen = csio->dxfer_len; 1504 xa->timeout = ccbh->timeout; /* milliseconds */ 1505 1506 if (ccbh->flags & CAM_POLLED) 1507 xa->flags |= ATA_F_POLL; 1508 1509 /* 1510 * Copy the cdb to the packetcmd buffer in the FIS using a 1511 * convenient pointer in the xa. 1512 * 1513 * Zero-out any trailing bytes in case the ATAPI device cares. 1514 */ 1515 cdbs = (void *)((ccbh->flags & CAM_CDB_POINTER) ? 1516 csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes); 1517 bcopy(cdbs, xa->packetcmd, csio->cdb_len); 1518 if (csio->cdb_len < 16) 1519 bzero(xa->packetcmd + csio->cdb_len, 16 - csio->cdb_len); 1520 1521 #if 0 1522 kprintf("opcode %d cdb_len %d dxfer_len %d\n", 1523 cdbs->generic.opcode, 1524 csio->cdb_len, csio->dxfer_len); 1525 #endif 1526 1527 /* 1528 * Some ATAPI commands do not actually follow the SCSI standard. 1529 */ 1530 cdbd = (void *)xa->packetcmd; 1531 1532 switch(cdbd->generic.opcode) { 1533 case REQUEST_SENSE: 1534 /* 1535 * Force SENSE requests to the ATAPI sense length. 1536 * 1537 * It is unclear if this is needed or not. 1538 */ 1539 if (cdbd->sense.length == SSD_FULL_SIZE) { 1540 if (bootverbose) { 1541 kprintf("%s: Shortening sense request\n", 1542 PORTNAME(ap)); 1543 } 1544 cdbd->sense.length = offsetof(struct scsi_sense_data, 1545 extra_bytes[0]); 1546 } 1547 break; 1548 case INQUIRY: 1549 /* 1550 * Some ATAPI devices can't handle long inquiry lengths, 1551 * don't ask me why. Truncate the inquiry length. 1552 */ 1553 if (cdbd->inquiry.page_code == 0 && 1554 cdbd->inquiry.length > SHORT_INQUIRY_LENGTH) { 1555 cdbd->inquiry.length = SHORT_INQUIRY_LENGTH; 1556 } 1557 break; 1558 case READ_6: 1559 case WRITE_6: 1560 /* 1561 * Convert *_6 to *_10 commands. Most ATAPI devices 1562 * cannot handle the SCSI READ_6 and WRITE_6 commands. 1563 */ 1564 cdbd->rw_10.opcode |= 0x20; 1565 cdbd->rw_10.byte2 = 0; 1566 cdbd->rw_10.addr[0] = cdbs->rw_6.addr[0] & 0x1F; 1567 cdbd->rw_10.addr[1] = cdbs->rw_6.addr[1]; 1568 cdbd->rw_10.addr[2] = cdbs->rw_6.addr[2]; 1569 cdbd->rw_10.addr[3] = 0; 1570 cdbd->rw_10.reserved = 0; 1571 cdbd->rw_10.length[0] = 0; 1572 cdbd->rw_10.length[1] = cdbs->rw_6.length; 1573 cdbd->rw_10.control = cdbs->rw_6.control; 1574 break; 1575 default: 1576 break; 1577 } 1578 1579 /* 1580 * And dispatch 1581 */ 1582 xa->complete = ahci_atapi_complete_cmd; 1583 xa->atascsi_private = ccb; 1584 ccb->ccb_h.sim_priv.entries[0].ptr = ap; 1585 ahci_os_lock_port(ap); 1586 ahci_ata_cmd(xa); 1587 ahci_os_unlock_port(ap); 1588 } 1589 1590 /* 1591 * Simulate page inquiries for disk attachments. 1592 */ 1593 static 1594 void 1595 ahci_xpt_page_inquiry(struct ahci_port *ap, struct ata_port *at, union ccb *ccb) 1596 { 1597 union { 1598 struct scsi_vpd_supported_page_list list; 1599 struct scsi_vpd_unit_serial_number serno; 1600 struct scsi_vpd_unit_devid devid; 1601 char buf[256]; 1602 } *page; 1603 scsi_cdb_t cdb; 1604 int i; 1605 int j; 1606 int len; 1607 1608 page = kmalloc(sizeof(*page), M_DEVBUF, M_WAITOK | M_ZERO); 1609 1610 cdb = (void *)((ccb->ccb_h.flags & CAM_CDB_POINTER) ? 1611 ccb->csio.cdb_io.cdb_ptr : ccb->csio.cdb_io.cdb_bytes); 1612 1613 switch(cdb->inquiry.page_code) { 1614 case SVPD_SUPPORTED_PAGE_LIST: 1615 i = 0; 1616 page->list.device = T_DIRECT; 1617 page->list.page_code = SVPD_SUPPORTED_PAGE_LIST; 1618 page->list.list[i++] = SVPD_SUPPORTED_PAGE_LIST; 1619 page->list.list[i++] = SVPD_UNIT_SERIAL_NUMBER; 1620 page->list.list[i++] = SVPD_UNIT_DEVID; 1621 page->list.length = i; 1622 len = offsetof(struct scsi_vpd_supported_page_list, list[3]); 1623 break; 1624 case SVPD_UNIT_SERIAL_NUMBER: 1625 i = 0; 1626 j = sizeof(at->at_identify.serial); 1627 for (i = 0; i < j && at->at_identify.serial[i] == ' '; ++i) 1628 ; 1629 while (j > i && at->at_identify.serial[j-1] == ' ') 1630 --j; 1631 page->serno.device = T_DIRECT; 1632 page->serno.page_code = SVPD_UNIT_SERIAL_NUMBER; 1633 page->serno.length = j - i; 1634 bcopy(at->at_identify.serial + i, 1635 page->serno.serial_num, j - i); 1636 len = offsetof(struct scsi_vpd_unit_serial_number, 1637 serial_num[j-i]); 1638 break; 1639 case SVPD_UNIT_DEVID: 1640 /* fall through for now */ 1641 default: 1642 ccb->ccb_h.status = CAM_FUNC_NOTAVAIL; 1643 len = 0; 1644 break; 1645 } 1646 if (ccb->ccb_h.status == CAM_REQ_INPROG) { 1647 if (len <= ccb->csio.dxfer_len) { 1648 ccb->ccb_h.status = CAM_REQ_CMP; 1649 bzero(ccb->csio.data_ptr, ccb->csio.dxfer_len); 1650 bcopy(page, ccb->csio.data_ptr, len); 1651 ccb->csio.resid = ccb->csio.dxfer_len - len; 1652 } else { 1653 ccb->ccb_h.status = CAM_CCB_LEN_ERR; 1654 } 1655 } 1656 kfree(page, M_DEVBUF); 1657 } 1658 1659 /* 1660 * Completion function for ATA_PORT_T_DISK cache synchronization. 1661 */ 1662 static 1663 void 1664 ahci_ata_complete_disk_synchronize_cache(struct ata_xfer *xa) 1665 { 1666 union ccb *ccb = xa->atascsi_private; 1667 struct ccb_hdr *ccbh = &ccb->ccb_h; 1668 struct ahci_port *ap = ccb->ccb_h.sim_priv.entries[0].ptr; 1669 1670 switch(xa->state) { 1671 case ATA_S_COMPLETE: 1672 ccbh->status = CAM_REQ_CMP; 1673 ccb->csio.scsi_status = SCSI_STATUS_OK; 1674 break; 1675 case ATA_S_ERROR: 1676 kprintf("%s: synchronize_cache: error\n", 1677 ATANAME(ap, xa->at)); 1678 ccbh->status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID; 1679 ccb->csio.scsi_status = SCSI_STATUS_CHECK_COND; 1680 ahci_ata_dummy_sense(&ccb->csio.sense_data); 1681 break; 1682 case ATA_S_TIMEOUT: 1683 kprintf("%s: synchronize_cache: timeout\n", 1684 ATANAME(ap, xa->at)); 1685 ccbh->status = CAM_CMD_TIMEOUT; 1686 break; 1687 default: 1688 kprintf("%s: synchronize_cache: unknown state %d\n", 1689 ATANAME(ap, xa->at), xa->state); 1690 panic("%s: Unknown state", ATANAME(ap, xa->at)); 1691 ccbh->status = CAM_REQ_CMP_ERR; 1692 break; 1693 } 1694 ahci_ata_put_xfer(xa); 1695 /*ahci_os_unlock_port(ap); ILLEGAL SEE NOTE-1 AT TOP */ 1696 xpt_done(ccb); 1697 /*ahci_os_lock_port(ap);*/ 1698 } 1699 1700 /* 1701 * Completion function for ATA_PORT_T_DISK I/O 1702 */ 1703 static 1704 void 1705 ahci_ata_complete_disk_rw(struct ata_xfer *xa) 1706 { 1707 union ccb *ccb = xa->atascsi_private; 1708 struct ccb_hdr *ccbh = &ccb->ccb_h; 1709 struct ahci_port *ap = ccb->ccb_h.sim_priv.entries[0].ptr; 1710 1711 switch(xa->state) { 1712 case ATA_S_COMPLETE: 1713 ccbh->status = CAM_REQ_CMP; 1714 ccb->csio.scsi_status = SCSI_STATUS_OK; 1715 break; 1716 case ATA_S_ERROR: 1717 kprintf("%s: disk_rw: error\n", ATANAME(ap, xa->at)); 1718 ccbh->status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID; 1719 ccb->csio.scsi_status = SCSI_STATUS_CHECK_COND; 1720 ahci_ata_dummy_sense(&ccb->csio.sense_data); 1721 break; 1722 case ATA_S_TIMEOUT: 1723 kprintf("%s: disk_rw: timeout\n", ATANAME(ap, xa->at)); 1724 ccbh->status = CAM_CMD_TIMEOUT; 1725 ccb->csio.scsi_status = SCSI_STATUS_CHECK_COND; 1726 ahci_ata_dummy_sense(&ccb->csio.sense_data); 1727 break; 1728 default: 1729 kprintf("%s: disk_rw: unknown state %d\n", 1730 ATANAME(ap, xa->at), xa->state); 1731 panic("%s: Unknown state", ATANAME(ap, xa->at)); 1732 ccbh->status = CAM_REQ_CMP_ERR; 1733 break; 1734 } 1735 ccb->csio.resid = xa->resid; 1736 ahci_ata_put_xfer(xa); 1737 /*ahci_os_unlock_port(ap); ILLEGAL SEE NOTE-1 AT TOP */ 1738 xpt_done(ccb); 1739 /*ahci_os_lock_port(ap);*/ 1740 } 1741 1742 /* 1743 * Completion function for ATA_PORT_T_ATAPI I/O 1744 * 1745 * Sense data is returned in the rfis. 1746 */ 1747 static 1748 void 1749 ahci_atapi_complete_cmd(struct ata_xfer *xa) 1750 { 1751 union ccb *ccb = xa->atascsi_private; 1752 struct ccb_hdr *ccbh = &ccb->ccb_h; 1753 struct ahci_port *ap = ccb->ccb_h.sim_priv.entries[0].ptr; 1754 scsi_cdb_t cdb; 1755 1756 cdb = (void *)((ccb->ccb_h.flags & CAM_CDB_POINTER) ? 1757 ccb->csio.cdb_io.cdb_ptr : ccb->csio.cdb_io.cdb_bytes); 1758 1759 switch(xa->state) { 1760 case ATA_S_COMPLETE: 1761 ccbh->status = CAM_REQ_CMP; 1762 ccb->csio.scsi_status = SCSI_STATUS_OK; 1763 break; 1764 case ATA_S_ERROR: 1765 ccbh->status = CAM_SCSI_STATUS_ERROR; 1766 ccb->csio.scsi_status = SCSI_STATUS_CHECK_COND; 1767 ahci_ata_atapi_sense(&xa->rfis, &ccb->csio.sense_data); 1768 break; 1769 case ATA_S_TIMEOUT: 1770 kprintf("%s: cmd %d: timeout\n", 1771 PORTNAME(ap), cdb->generic.opcode); 1772 ccbh->status = CAM_CMD_TIMEOUT; 1773 ccb->csio.scsi_status = SCSI_STATUS_CHECK_COND; 1774 ahci_ata_dummy_sense(&ccb->csio.sense_data); 1775 break; 1776 default: 1777 kprintf("%s: cmd %d: unknown state %d\n", 1778 PORTNAME(ap), cdb->generic.opcode, xa->state); 1779 panic("%s: Unknown state", PORTNAME(ap)); 1780 ccbh->status = CAM_REQ_CMP_ERR; 1781 break; 1782 } 1783 ccb->csio.resid = xa->resid; 1784 xa->atascsi_private = NULL; 1785 ahci_ata_put_xfer(xa); 1786 /*ahci_os_unlock_port(ap); ILLEGAL SEE NOTE-1 AT TOP */ 1787 xpt_done(ccb); 1788 /*ahci_os_lock_port(ap);*/ 1789 } 1790 1791 /* 1792 * Construct dummy sense data for errors on DISKs 1793 */ 1794 static 1795 void 1796 ahci_ata_dummy_sense(struct scsi_sense_data *sense_data) 1797 { 1798 sense_data->error_code = SSD_ERRCODE_VALID | SSD_CURRENT_ERROR; 1799 sense_data->segment = 0; 1800 sense_data->flags = SSD_KEY_MEDIUM_ERROR; 1801 sense_data->info[0] = 0; 1802 sense_data->info[1] = 0; 1803 sense_data->info[2] = 0; 1804 sense_data->info[3] = 0; 1805 sense_data->extra_len = 0; 1806 } 1807 1808 /* 1809 * Construct atapi sense data for errors on ATAPI 1810 * 1811 * The ATAPI sense data is stored in the passed rfis and must be converted 1812 * to SCSI sense data. 1813 */ 1814 static 1815 void 1816 ahci_ata_atapi_sense(struct ata_fis_d2h *rfis, 1817 struct scsi_sense_data *sense_data) 1818 { 1819 sense_data->error_code = SSD_ERRCODE_VALID | SSD_CURRENT_ERROR; 1820 sense_data->segment = 0; 1821 sense_data->flags = (rfis->error & 0xF0) >> 4; 1822 if (rfis->error & 0x04) 1823 sense_data->flags |= SSD_KEY_ILLEGAL_REQUEST; 1824 if (rfis->error & 0x02) 1825 sense_data->flags |= SSD_EOM; 1826 if (rfis->error & 0x01) 1827 sense_data->flags |= SSD_ILI; 1828 sense_data->info[0] = 0; 1829 sense_data->info[1] = 0; 1830 sense_data->info[2] = 0; 1831 sense_data->info[3] = 0; 1832 sense_data->extra_len = 0; 1833 } 1834 1835 static 1836 void 1837 ahci_strip_string(const char **basep, int *lenp) 1838 { 1839 const char *base = *basep; 1840 int len = *lenp; 1841 1842 while (len && (*base == 0 || *base == ' ')) { 1843 --len; 1844 ++base; 1845 } 1846 while (len && (base[len-1] == 0 || base[len-1] == ' ')) 1847 --len; 1848 *basep = base; 1849 *lenp = len; 1850 } 1851