1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Enclosure Services Device target driver 24 * 25 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 26 * Use is subject to license terms. 27 */ 28 #pragma ident "%Z%%M% %I% %E% SMI" 29 30 #include <sys/modctl.h> 31 #include <sys/file.h> 32 #include <sys/stat.h> 33 #include <sys/scsi/scsi.h> 34 #include <sys/scsi/generic/status.h> 35 #include <sys/scsi/targets/sesio.h> 36 #include <sys/scsi/targets/ses.h> 37 38 39 40 /* 41 * Power management defines (should be in a common include file?) 42 */ 43 #define PM_HARDWARE_STATE_PROP "pm-hardware-state" 44 #define PM_NEEDS_SUSPEND_RESUME "needs-suspend-resume" 45 46 47 /* 48 * Global Driver Data 49 */ 50 int ses_io_time = SES_IO_TIME; 51 52 static int ses_retry_count = SES_RETRY_COUNT * SES_RETRY_MULTIPLIER; 53 54 #ifdef DEBUG 55 int ses_debug = 0; 56 #else /* DEBUG */ 57 #define ses_debug 0 58 #endif /* DEBUG */ 59 60 61 /* 62 * External Enclosure Functions 63 */ 64 extern int ses_softc_init(ses_softc_t *, int); 65 extern int ses_init_enc(ses_softc_t *); 66 extern int ses_get_encstat(ses_softc_t *, int); 67 extern int ses_set_encstat(ses_softc_t *, uchar_t, int); 68 extern int ses_get_objstat(ses_softc_t *, ses_objarg *, int); 69 extern int ses_set_objstat(ses_softc_t *, ses_objarg *, int); 70 71 extern int safte_softc_init(ses_softc_t *, int); 72 extern int safte_init_enc(ses_softc_t *); 73 extern int safte_get_encstat(ses_softc_t *, int); 74 extern int safte_set_encstat(ses_softc_t *, uchar_t, int); 75 extern int safte_get_objstat(ses_softc_t *, ses_objarg *, int); 76 extern int safte_set_objstat(ses_softc_t *, ses_objarg *, int); 77 78 extern int sen_softc_init(ses_softc_t *, int); 79 extern int sen_init_enc(ses_softc_t *); 80 extern int sen_get_encstat(ses_softc_t *, int); 81 extern int sen_set_encstat(ses_softc_t *, uchar_t, int); 82 extern int sen_get_objstat(ses_softc_t *, ses_objarg *, int); 83 extern int sen_set_objstat(ses_softc_t *, ses_objarg *, int); 84 85 /* 86 * Local Function prototypes 87 */ 88 static int ses_info(dev_info_t *, ddi_info_cmd_t, void *, void **); 89 static int ses_probe(dev_info_t *); 90 static int ses_attach(dev_info_t *, ddi_attach_cmd_t); 91 static int ses_detach(dev_info_t *, ddi_detach_cmd_t); 92 93 static int is_enc_dev(ses_softc_t *, struct scsi_inquiry *, int, enctyp *); 94 static int ses_doattach(dev_info_t *dip); 95 96 static int ses_open(dev_t *, int, int, cred_t *); 97 static int ses_close(dev_t, int, int, cred_t *); 98 static int ses_ioctl(dev_t, int, intptr_t, int, cred_t *, int *); 99 100 static encvec vecs[3] = { 101 { 102 ses_softc_init, ses_init_enc, ses_get_encstat, 103 ses_set_encstat, ses_get_objstat, ses_set_objstat 104 }, 105 { 106 safte_softc_init, safte_init_enc, safte_get_encstat, 107 safte_set_encstat, safte_get_objstat, safte_set_objstat, 108 }, 109 { 110 sen_softc_init, sen_init_enc, sen_get_encstat, 111 sen_set_encstat, sen_get_objstat, sen_set_objstat 112 } 113 }; 114 115 116 /* 117 * Local Functions 118 */ 119 static int ses_start(struct buf *bp); 120 static int ses_decode_sense(struct scsi_pkt *pkt, int *err); 121 122 static void ses_get_pkt(struct buf *bp, int (*func)(opaque_t)); 123 static void ses_callback(struct scsi_pkt *pkt); 124 static void ses_restart(void *arg); 125 126 127 /* 128 * Local Static Data 129 */ 130 #ifndef D_HOTPLUG 131 #define D_HOTPLUG 0 132 #endif /* D_HOTPLUG */ 133 134 static struct cb_ops ses_cb_ops = { 135 ses_open, /* open */ 136 ses_close, /* close */ 137 nodev, /* strategy */ 138 nodev, /* print */ 139 nodev, /* dump */ 140 nodev, /* read */ 141 nodev, /* write */ 142 ses_ioctl, /* ioctl */ 143 nodev, /* devmap */ 144 nodev, /* mmap */ 145 nodev, /* segmap */ 146 nochpoll, /* poll */ 147 ddi_prop_op, /* cb_prop_op */ 148 0, /* streamtab */ 149 #if !defined(CB_REV) 150 D_MP | D_NEW | D_HOTPLUG /* Driver compatibility flag */ 151 #else /* !defined(CB_REV) */ 152 D_MP | D_NEW | D_HOTPLUG, /* Driver compatibility flag */ 153 CB_REV, /* cb_ops version number */ 154 nodev, /* aread */ 155 nodev /* awrite */ 156 #endif /* !defined(CB_REV) */ 157 }; 158 159 static struct dev_ops ses_dev_ops = { 160 DEVO_REV, /* devo_rev, */ 161 0, /* refcnt */ 162 ses_info, /* info */ 163 nulldev, /* identify */ 164 ses_probe, /* probe */ 165 ses_attach, /* attach */ 166 ses_detach, /* detach */ 167 nodev, /* reset */ 168 &ses_cb_ops, /* driver operations */ 169 (struct bus_ops *)NULL, /* bus operations */ 170 NULL /* power */ 171 }; 172 173 static void *estate = NULL; 174 static const char *Snm = "ses"; 175 static const char *Str = "%s\n"; 176 static const char *efl = "copyin/copyout EFAULT @ line %d"; 177 static const char *fail_msg = "%stransport failed: reason '%s': %s"; 178 179 180 181 /* 182 * autoconfiguration routines. 183 */ 184 char _depends_on[] = "misc/scsi"; 185 186 static struct modldrv modldrv = { 187 &mod_driverops, "SCSI Enclosure Services %I%", &ses_dev_ops 188 }; 189 190 static struct modlinkage modlinkage = { 191 MODREV_1, &modldrv, NULL 192 }; 193 194 195 int 196 _init(void) 197 { 198 int status; 199 status = ddi_soft_state_init(&estate, sizeof (ses_softc_t), 0); 200 if (status == 0) { 201 if ((status = mod_install(&modlinkage)) != 0) { 202 ddi_soft_state_fini(&estate); 203 } 204 } 205 return (status); 206 } 207 208 int 209 _fini(void) 210 { 211 int status; 212 if ((status = mod_remove(&modlinkage)) != 0) { 213 return (status); 214 } 215 ddi_soft_state_fini(&estate); 216 return (status); 217 } 218 219 int 220 _info(struct modinfo *modinfop) 221 { 222 return (mod_info(&modlinkage, modinfop)); 223 } 224 225 static int 226 ses_probe(dev_info_t *dip) 227 { 228 int err; 229 struct scsi_device *devp; 230 enctyp ep; 231 232 /* 233 * I finally figured out why we return success 234 * on every probe. The devices that we attach to 235 * don't all report as being the same "device type" 236 * 237 * 1) A5x00 -- report as Enclosure Services (0xD) SES 238 * 2) A1000 -- report as Direct Access (0x0) SES 239 * uses the same target as raid controler. 240 * 3) D1000 -- report as processor (0x3) SAFTE 241 * 3) D240 -- report as processor (0x3) SAFTE 242 * 243 * We also reportedly attach to SEN devices which I 244 * believe reside in a Tobasco tray. I have never 245 * been able to get one to attach. 246 * 247 */ 248 249 250 if (dip == NULL) 251 return (DDI_PROBE_FAILURE); 252 /* 253 * XXX: Breakage from the x86 folks. 254 */ 255 if (strcmp(ddi_get_name(ddi_get_parent(dip)), "ata") == 0) { 256 return (DDI_PROBE_FAILURE); 257 } 258 /* SES_LOG(NULL, SES_CE_DEBUG1, "ses_probe: OK"); */ 259 if (ddi_dev_is_sid(dip) == DDI_SUCCESS) { 260 return (DDI_PROBE_DONTCARE); 261 } 262 devp = ddi_get_driver_private(dip); 263 switch (err = scsi_probe(devp, SLEEP_FUNC)) { 264 case SCSIPROBE_EXISTS: 265 if (is_enc_dev(NULL, devp->sd_inq, SUN_INQSIZE, &ep)) { 266 break; 267 } 268 /* FALLTHROUGH */ 269 case SCSIPROBE_NORESP: 270 scsi_unprobe(devp); 271 return (DDI_PROBE_FAILURE); 272 default: 273 SES_LOG(NULL, SES_CE_DEBUG9, 274 "ses_probe: probe error %d", err); 275 scsi_unprobe(devp); 276 return (DDI_PROBE_FAILURE); 277 } 278 scsi_unprobe(devp); 279 return (DDI_PROBE_SUCCESS); 280 } 281 282 static int 283 ses_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) 284 { 285 int inst, err; 286 ses_softc_t *ssc; 287 288 inst = ddi_get_instance(dip); 289 switch (cmd) { 290 case DDI_ATTACH: 291 SES_LOG(NULL, SES_CE_DEBUG9, "ses_attach: DDI_ATTACH ses%d", 292 inst); 293 294 err = ses_doattach(dip); 295 296 if (err == DDI_FAILURE) { 297 return (DDI_FAILURE); 298 } 299 SES_LOG(NULL, SES_CE_DEBUG4, 300 "ses_attach: DDI_ATTACH OK ses%d", inst); 301 break; 302 303 case DDI_RESUME: 304 if ((ssc = ddi_get_soft_state(estate, inst)) == NULL) { 305 return (DDI_FAILURE); 306 } 307 SES_LOG(ssc, SES_CE_DEBUG1, "ses_attach: DDI_ATTACH ses%d", 308 inst); 309 ssc->ses_suspended = 0; 310 break; 311 312 default: 313 return (DDI_FAILURE); 314 } 315 return (DDI_SUCCESS); 316 } 317 318 static int 319 is_enc_dev(ses_softc_t *ssc, struct scsi_inquiry *inqp, int iqlen, enctyp *ep) 320 { 321 uchar_t dt = (inqp->inq_dtype & DTYPE_MASK); 322 uchar_t *iqd = (uchar_t *)inqp; 323 324 if (dt == DTYPE_ESI) { 325 if (strncmp(inqp->inq_vid, SEN_ID, SEN_ID_LEN) == 0) { 326 SES_LOG(ssc, SES_CE_DEBUG3, "SEN device found"); 327 *ep = SEN_TYPE; 328 } else if (inqp->inq_rdf > RDF_SCSI2) { 329 SES_LOG(ssc, SES_CE_DEBUG3, "SES device found"); 330 *ep = SES_TYPE; 331 } else { 332 SES_LOG(ssc, SES_CE_DEBUG3, "Pre-SCSI3 SES device"); 333 *ep = SES_TYPE; 334 } 335 return (1); 336 } 337 if ((iqd[6] & 0x40) && inqp->inq_rdf >= RDF_SCSI2) { 338 /* 339 * PassThrough Device. 340 */ 341 *ep = SES_TYPE; 342 SES_LOG(ssc, SES_CE_DEBUG3, "Passthru SES device"); 343 return (1); 344 } 345 346 if (iqlen < 47) { 347 SES_LOG(ssc, CE_NOTE, 348 "INQUIRY data too short to determine SAF-TE"); 349 return (0); 350 } 351 if (strncmp((char *)&iqd[44], "SAF-TE", 4) == 0) { 352 *ep = SAFT_TYPE; 353 SES_LOG(ssc, SES_CE_DEBUG3, "SAF-TE device found"); 354 return (1); 355 } 356 return (0); 357 } 358 359 360 /* 361 * Attach ses device. 362 * 363 * XXX: Power management is NOT supported. A token framework 364 * is provided that will need to be extended assuming we have 365 * ses devices we can power down. Currently, we don't have any. 366 */ 367 static int 368 ses_doattach(dev_info_t *dip) 369 { 370 int inst, err; 371 Scsidevp devp; 372 ses_softc_t *ssc; 373 enctyp etyp; 374 375 inst = ddi_get_instance(dip); 376 /* 377 * Workaround for bug #4154979- for some reason we can 378 * be called with identical instance numbers but for 379 * different dev_info_t-s- all but one are bogus. 380 * 381 * Bad Dog! No Biscuit! 382 * 383 * A quick workaround might be to call ddi_soft_state_zalloc 384 * unconditionally, as the implementation fails these calls 385 * if there's an item already allocated. A more reasonable 386 * and longer term change is to move the allocation past 387 * the probe for the device's existence as most of these 388 * 'bogus' calls are for nonexistent devices. 389 */ 390 391 devp = ddi_get_driver_private(dip); 392 devp->sd_dev = dip; 393 394 /* 395 * Determine whether the { i, t, l } we're called 396 * to start is an enclosure services device. 397 */ 398 399 /* 400 * Call the scsi_probe routine to see whether 401 * we actually have an Enclosure Services device at 402 * this address. 403 */ 404 err = scsi_probe(devp, SLEEP_FUNC); 405 if (err != SCSIPROBE_EXISTS) { 406 SES_LOG(NULL, SES_CE_DEBUG9, 407 "ses_doattach: probe error %d", err); 408 scsi_unprobe(devp); 409 return (DDI_FAILURE); 410 } 411 /* Call is_enc_dev() to get the etyp */ 412 if (!(is_enc_dev(NULL, devp->sd_inq, SUN_INQSIZE, &etyp))) { 413 SES_LOG(NULL, CE_WARN, 414 "ses_doattach: ses%d: is_enc_dev failure", inst); 415 scsi_unprobe(devp); 416 return (DDI_FAILURE); 417 } 418 419 if (ddi_soft_state_zalloc(estate, inst) != DDI_SUCCESS) { 420 scsi_unprobe(devp); 421 SES_LOG(NULL, CE_NOTE, "ses%d: softalloc fails", inst); 422 return (DDI_FAILURE); 423 } 424 ssc = ddi_get_soft_state(estate, inst); 425 if (ssc == NULL) { 426 scsi_unprobe(devp); 427 SES_LOG(NULL, CE_NOTE, "ses%d: get_soft_state fails", inst); 428 return (DDI_FAILURE); 429 } 430 devp->sd_private = (opaque_t)ssc; 431 ssc->ses_devp = devp; 432 err = ddi_create_minor_node(dip, "0", S_IFCHR, inst, 433 DDI_NT_SCSI_ENCLOSURE, NULL); 434 if (err == DDI_FAILURE) { 435 ddi_remove_minor_node(dip, NULL); 436 SES_LOG(ssc, CE_NOTE, "minor node creation failed"); 437 ddi_soft_state_free(estate, inst); 438 scsi_unprobe(devp); 439 return (DDI_FAILURE); 440 } 441 442 ssc->ses_type = etyp; 443 ssc->ses_vec = vecs[etyp]; 444 445 /* Call SoftC Init Routine A bit later... */ 446 447 ssc->ses_rqbp = scsi_alloc_consistent_buf(SES_ROUTE(ssc), 448 NULL, SENSE_LENGTH, B_READ, SLEEP_FUNC, NULL); 449 if (ssc->ses_rqbp != NULL) { 450 ssc->ses_rqpkt = scsi_init_pkt(SES_ROUTE(ssc), NULL, 451 ssc->ses_rqbp, CDB_GROUP0, 1, 0, PKT_CONSISTENT, 452 SLEEP_FUNC, NULL); 453 } 454 if (ssc->ses_rqbp == NULL || ssc->ses_rqpkt == NULL) { 455 ddi_remove_minor_node(dip, NULL); 456 SES_LOG(ssc, CE_NOTE, "scsi_init_pkt of rqbuf failed"); 457 if (ssc->ses_rqbp != NULL) { 458 scsi_free_consistent_buf(ssc->ses_rqbp); 459 ssc->ses_rqbp = NULL; 460 } 461 ddi_soft_state_free(estate, inst); 462 scsi_unprobe(devp); 463 return (DDI_FAILURE); 464 } 465 ssc->ses_rqpkt->pkt_private = (opaque_t)ssc; 466 ssc->ses_rqpkt->pkt_address = *(SES_ROUTE(ssc)); 467 ssc->ses_rqpkt->pkt_comp = ses_callback; 468 ssc->ses_rqpkt->pkt_time = ses_io_time; 469 ssc->ses_rqpkt->pkt_flags = FLAG_NOPARITY|FLAG_NODISCON|FLAG_SENSING; 470 ssc->ses_rqpkt->pkt_cdbp[0] = SCMD_REQUEST_SENSE; 471 ssc->ses_rqpkt->pkt_cdbp[1] = 0; 472 ssc->ses_rqpkt->pkt_cdbp[2] = 0; 473 ssc->ses_rqpkt->pkt_cdbp[3] = 0; 474 ssc->ses_rqpkt->pkt_cdbp[4] = SENSE_LENGTH; 475 ssc->ses_rqpkt->pkt_cdbp[5] = 0; 476 477 switch (scsi_ifgetcap(SES_ROUTE(ssc), "auto-rqsense", 1)) { 478 case 1: 479 /* if already set, don't reset it */ 480 ssc->ses_arq = 1; 481 break; 482 case 0: 483 /* try and set it */ 484 ssc->ses_arq = ((scsi_ifsetcap(SES_ROUTE(ssc), 485 "auto-rqsense", 1, 1) == 1) ? 1 : 0); 486 break; 487 default: 488 /* probably undefined, so zero it out */ 489 ssc->ses_arq = 0; 490 break; 491 } 492 493 ssc->ses_sbufp = getrbuf(KM_SLEEP); 494 cv_init(&ssc->ses_sbufcv, NULL, CV_DRIVER, NULL); 495 496 /* 497 * If the HBA supports wide, tell it to use wide. 498 */ 499 if (scsi_ifgetcap(SES_ROUTE(ssc), "wide-xfer", 1) != -1) { 500 int wd = ((devp->sd_inq->inq_rdf == RDF_SCSI2) && 501 (devp->sd_inq->inq_wbus16 || devp->sd_inq->inq_wbus32)) 502 ? 1 : 0; 503 (void) scsi_ifsetcap(SES_ROUTE(ssc), "wide-xfer", wd, 1); 504 } 505 506 /* 507 * Now do ssc init of enclosure specifics. 508 * At the same time, check to make sure getrbuf 509 * actually succeeded. 510 */ 511 if ((*ssc->ses_vec.softc_init)(ssc, 1)) { 512 SES_LOG(ssc, SES_CE_DEBUG3, "failed softc init"); 513 (void) (*ssc->ses_vec.softc_init)(ssc, 0); 514 ddi_remove_minor_node(dip, NULL); 515 scsi_destroy_pkt(ssc->ses_rqpkt); 516 scsi_free_consistent_buf(ssc->ses_rqbp); 517 if (ssc->ses_sbufp) { 518 freerbuf(ssc->ses_sbufp); 519 } 520 cv_destroy(&ssc->ses_sbufcv); 521 ddi_soft_state_free(estate, inst); 522 scsi_unprobe(devp); 523 return (DDI_FAILURE); 524 } 525 526 /* 527 * create this property so that PM code knows we want 528 * to be suspended at PM time 529 */ 530 (void) ddi_prop_update_string(DDI_DEV_T_NONE, dip, 531 PM_HARDWARE_STATE_PROP, PM_NEEDS_SUSPEND_RESUME); 532 533 /* announce the existence of this device */ 534 ddi_report_dev(dip); 535 return (DDI_SUCCESS); 536 } 537 538 539 /* 540 * Detach ses device. 541 * 542 * XXX: Power management is NOT supported. A token framework 543 * is provided that will need to be extended assuming we have 544 * ses devices we can power down. Currently, we don't have any. 545 */ 546 static int 547 ses_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 548 { 549 ses_softc_t *ssc; 550 int inst; 551 552 switch (cmd) { 553 case DDI_DETACH: 554 inst = ddi_get_instance(dip); 555 ssc = ddi_get_soft_state(estate, inst); 556 if (ssc == NULL) { 557 cmn_err(CE_NOTE, 558 "ses%d: DDI_DETACH, no softstate found", inst); 559 return (DDI_FAILURE); 560 } 561 if (ISOPEN(ssc)) { 562 return (DDI_FAILURE); 563 } 564 565 #if !defined(lint) 566 /* LINTED */ 567 _NOTE(COMPETING_THREADS_NOW); 568 #endif /* !defined(lint) */ 569 570 if (ssc->ses_vec.softc_init) 571 (void) (*ssc->ses_vec.softc_init)(ssc, 0); 572 573 #if !defined(lint) 574 _NOTE(NO_COMPETING_THREADS_NOW); 575 #endif /* !defined(lint) */ 576 577 (void) scsi_ifsetcap(SES_ROUTE(ssc), "auto-rqsense", 1, 0); 578 scsi_destroy_pkt(ssc->ses_rqpkt); 579 scsi_free_consistent_buf(ssc->ses_rqbp); 580 freerbuf(ssc->ses_sbufp); 581 cv_destroy(&ssc->ses_sbufcv); 582 ddi_soft_state_free(estate, inst); 583 ddi_prop_remove_all(dip); 584 ddi_remove_minor_node(dip, NULL); 585 scsi_unprobe(ddi_get_driver_private(dip)); 586 break; 587 588 case DDI_SUSPEND: 589 inst = ddi_get_instance(dip); 590 if ((ssc = ddi_get_soft_state(estate, inst)) == NULL) { 591 cmn_err(CE_NOTE, 592 "ses%d: DDI_SUSPEND, no softstate found", inst); 593 return (DDI_FAILURE); 594 } 595 596 /* 597 * If driver idle, accept suspend request. 598 * If it's busy, reject it. This keeps things simple! 599 */ 600 mutex_enter(SES_MUTEX); 601 if (ssc->ses_sbufbsy) { 602 mutex_exit(SES_MUTEX); 603 return (DDI_FAILURE); 604 } 605 ssc->ses_suspended = 1; 606 mutex_exit(SES_MUTEX); 607 break; 608 609 default: 610 return (DDI_FAILURE); 611 } 612 return (DDI_SUCCESS); 613 } 614 615 /* ARGSUSED */ 616 static int 617 ses_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result) 618 { 619 dev_t dev; 620 ses_softc_t *ssc; 621 int inst, error; 622 623 switch (infocmd) { 624 case DDI_INFO_DEVT2DEVINFO: 625 dev = (dev_t)arg; 626 inst = getminor(dev); 627 if ((ssc = ddi_get_soft_state(estate, inst)) == NULL) { 628 return (DDI_FAILURE); 629 } 630 *result = (void *) ssc->ses_devp->sd_dev; 631 error = DDI_SUCCESS; 632 break; 633 case DDI_INFO_DEVT2INSTANCE: 634 dev = (dev_t)arg; 635 inst = getminor(dev); 636 *result = (void *)(uintptr_t)inst; 637 error = DDI_SUCCESS; 638 break; 639 default: 640 error = DDI_FAILURE; 641 } 642 return (error); 643 } 644 645 /* 646 * Unix Entry Points 647 */ 648 649 /* ARGSUSED */ 650 static int 651 ses_open(dev_t *dev_p, int flag, int otyp, cred_t *cred_p) 652 { 653 ses_softc_t *ssc; 654 655 if ((ssc = ddi_get_soft_state(estate, getminor(*dev_p))) == NULL) { 656 return (ENXIO); 657 } 658 659 /* 660 * If the device is powered down, request it's activation. 661 * If it can't be activated, fail open. 662 */ 663 if (ssc->ses_suspended && 664 ddi_dev_is_needed(SES_DEVINFO(ssc), 0, 1) != DDI_SUCCESS) { 665 return (EIO); 666 } 667 668 mutex_enter(SES_MUTEX); 669 if (otyp == OTYP_LYR) 670 ssc->ses_lyropen++; 671 else 672 ssc->ses_oflag = 1; 673 674 ssc->ses_present = (ssc->ses_present)? ssc->ses_present: SES_OPENING; 675 mutex_exit(SES_MUTEX); 676 return (EOK); 677 } 678 679 /*ARGSUSED*/ 680 static int 681 ses_close(dev_t dev, int flag, int otyp, cred_t *cred_p) 682 { 683 ses_softc_t *ssc; 684 if ((ssc = ddi_get_soft_state(estate, getminor(dev))) == NULL) { 685 return (ENXIO); 686 } 687 688 if (ssc->ses_suspended) { 689 (void) ddi_dev_is_needed(SES_DEVINFO(ssc), 0, 1); 690 } 691 692 mutex_enter(SES_MUTEX); 693 if (otyp == OTYP_LYR) 694 ssc->ses_lyropen -= (ssc->ses_lyropen)? 1: 0; 695 else 696 ssc->ses_oflag = 0; 697 mutex_exit(SES_MUTEX); 698 return (0); 699 } 700 701 702 /*ARGSUSED3*/ 703 static int 704 ses_ioctl(dev_t dev, int cmd, intptr_t arg, int flg, cred_t *cred_p, int *rvalp) 705 { 706 ses_softc_t *ssc; 707 ses_object k, *up; 708 ses_objarg x; 709 uchar_t t; 710 uchar_t i; 711 int rv = 0; 712 713 if ((ssc = ddi_get_soft_state(estate, getminor(dev))) == NULL || 714 ssc->ses_present == SES_CLOSED) { 715 return (ENXIO); 716 } 717 718 719 switch (cmd) { 720 case SESIOC_GETNOBJ: 721 if (ddi_copyout(&ssc->ses_nobjects, (void *)arg, 722 sizeof (int), flg)) { 723 rv = EFAULT; 724 break; 725 } 726 break; 727 728 case SESIOC_GETOBJMAP: 729 up = (ses_object *) arg; 730 mutex_enter(SES_MUTEX); 731 for (i = 0; i != ssc->ses_nobjects; i++) { 732 k.obj_id = i; 733 k.subencid = ssc->ses_objmap[i].subenclosure; 734 k.elem_type = ssc->ses_objmap[i].enctype; 735 if (ddi_copyout(&k, up, sizeof (k), flg)) { 736 rv = EFAULT; 737 break; 738 } 739 up++; 740 } 741 mutex_exit(SES_MUTEX); 742 break; 743 744 case SESIOC_INIT: 745 rv = (*ssc->ses_vec.init_enc)(ssc); 746 break; 747 748 case SESIOC_GETENCSTAT: 749 if ((ssc->ses_encstat & ENCI_SVALID) == 0) { 750 rv = (*ssc->ses_vec.get_encstat)(ssc, KM_SLEEP); 751 if (rv) { 752 break; 753 } 754 } 755 t = ssc->ses_encstat & 0xf; 756 if (ddi_copyout(&t, (void *)arg, sizeof (t), flg)) 757 rv = EFAULT; 758 /* 759 * And always invalidate enclosure status on the way out. 760 */ 761 mutex_enter(SES_MUTEX); 762 ssc->ses_encstat &= ~ENCI_SVALID; 763 mutex_exit(SES_MUTEX); 764 break; 765 766 case SESIOC_SETENCSTAT: 767 if (ddi_copyin((void *)arg, &t, sizeof (t), flg)) 768 rv = EFAULT; 769 else 770 rv = (*ssc->ses_vec.set_encstat)(ssc, t, KM_SLEEP); 771 mutex_enter(SES_MUTEX); 772 ssc->ses_encstat &= ~ENCI_SVALID; 773 mutex_exit(SES_MUTEX); 774 break; 775 776 case SESIOC_GETOBJSTAT: 777 if (ddi_copyin((void *)arg, &x, sizeof (x), flg)) { 778 rv = EFAULT; 779 break; 780 } 781 if (x.obj_id >= ssc->ses_nobjects) { 782 rv = EINVAL; 783 break; 784 } 785 if ((rv = (*ssc->ses_vec.get_objstat)(ssc, &x, KM_SLEEP)) != 0) 786 break; 787 if (ddi_copyout(&x, (void *)arg, sizeof (x), flg)) 788 rv = EFAULT; 789 else { 790 /* 791 * Now that we no longer poll, svalid never stays true. 792 */ 793 mutex_enter(SES_MUTEX); 794 ssc->ses_objmap[x.obj_id].svalid = 0; 795 mutex_exit(SES_MUTEX); 796 } 797 break; 798 799 case SESIOC_SETOBJSTAT: 800 if (ddi_copyin((void *)arg, &x, sizeof (x), flg)) { 801 rv = EFAULT; 802 break; 803 } 804 if (x.obj_id >= ssc->ses_nobjects) { 805 rv = EINVAL; 806 break; 807 } 808 rv = (*ssc->ses_vec.set_objstat)(ssc, &x, KM_SLEEP); 809 if (rv == 0) { 810 mutex_enter(SES_MUTEX); 811 ssc->ses_objmap[x.obj_id].svalid = 0; 812 mutex_exit(SES_MUTEX); 813 } 814 break; 815 816 case USCSICMD: 817 rv = ses_uscsi_cmd(ssc, (Uscmd *) arg, flg, flg, flg, flg); 818 break; 819 820 default: 821 rv = ENOTTY; 822 break; 823 } 824 return (rv); 825 } 826 827 828 /* 829 * Loop on running a kernel based command 830 * 831 * FIXME: This routine is not really needed. 832 */ 833 int 834 ses_runcmd(ses_softc_t *ssc, Uscmd *lp) 835 { 836 int e; 837 838 lp->uscsi_status = 0; 839 e = ses_uscsi_cmd(ssc, lp, FKIOCTL, FKIOCTL, FKIOCTL, FKIOCTL); 840 841 #ifdef not 842 /* 843 * Debug: Nice cross-check code for verifying consistent status. 844 */ 845 if (lp->uscsi_status) { 846 if (lp->uscsi_status == STATUS_CHECK) { 847 SES_LOG(ssc, CE_NOTE, "runcmd<cdb[0]=" 848 "0x%x->%s ASC/ASCQ=0x%x/0x%x>", 849 lp->uscsi_cdb[0], 850 scsi_sname(lp->uscsi_rqbuf[2] & 0xf), 851 lp->uscsi_rqbuf[12] & 0xff, 852 lp->uscsi_rqbuf[13] & 0xff); 853 } else { 854 SES_LOG(ssc, CE_NOTE, "runcmd<cdb[0]=" 855 "0x%x -> Status 0x%x", lp->uscsi_cdb[0], 856 lp->uscsi_status); 857 } 858 } 859 #endif /* not */ 860 return (e); 861 } 862 863 864 /* 865 * Run a scsi command. 866 */ 867 int 868 ses_uscsi_cmd(ses_softc_t *ssc, Uscmd *Uc, int Uf, int Cf, int Df, int Rf) 869 { 870 Uscmd local, *lc = &local, *scmd = &ssc->ses_uscsicmd; 871 int err = EOK; 872 int rw, rqlen; 873 struct buf *bp; 874 875 #ifdef _MULTI_DATAMODEL 876 /* 877 * 32 bit application to 64 bit kernel call. 878 */ 879 struct uscsi_cmd32 ucmd_32, *uc = &ucmd_32; 880 881 switch (ddi_model_convert_from(Uf & FMODELS)) { 882 case DDI_MODEL_ILP32: 883 if (ddi_copyin(Uc, uc, sizeof (*uc), Uf)) { 884 SES_LOG(ssc, SES_CE_DEBUG2, efl, __LINE__); 885 return (EFAULT); 886 } 887 uscsi_cmd32touscsi_cmd(uc, lc); 888 break; 889 case DDI_MODEL_NONE: 890 uc = NULL; 891 if (ddi_copyin(Uc, lc, sizeof (*lc), Uf)) { 892 SES_LOG(ssc, SES_CE_DEBUG2, efl, __LINE__); 893 return (EFAULT); 894 } 895 break; 896 default: 897 SES_LOG(ssc, CE_NOTE, "Unknown model conversion flag %x", 898 Uf & FMODELS); 899 return (EINVAL); 900 } 901 #else /* _MULTI_DATAMODEL */ 902 if (ddi_copyin(Uc, lc, sizeof (*lc), Uf)) { 903 SES_LOG(ssc, SES_CE_DEBUG2, efl, __LINE__); 904 return (EFAULT); 905 } 906 #endif /* _MULTI_DATAMODEL */ 907 908 /* 909 * Is this a request to reset the bus? 910 * If so, we need go no further. 911 */ 912 if (lc->uscsi_flags & (USCSI_RESET|USCSI_RESET_ALL)) { 913 int flag = ((lc->uscsi_flags & USCSI_RESET_ALL)) ? 914 RESET_ALL : RESET_TARGET; 915 err = (scsi_reset(SES_ROUTE(ssc), flag))? 0 : EIO; 916 SES_LOG(ssc, SES_CE_DEBUG1, "reset %s %s\n", 917 (flag == RESET_ALL)? "all" : "target", 918 (err)? "failed" : "ok"); 919 return (err); 920 } 921 922 /* 923 * First do some sanity checks. 924 */ 925 if (lc->uscsi_cdblen == 0) { 926 SES_LOG(ssc, SES_CE_DEBUG1, "cblen %d", lc->uscsi_cdblen); 927 return (EINVAL); 928 } 929 if (lc->uscsi_flags & USCSI_RQENABLE && 930 (lc->uscsi_rqlen == 0 || lc->uscsi_rqbuf == NULL)) { 931 return (EINVAL); 932 } 933 934 935 /* 936 * Grab local 'special' buffer 937 */ 938 mutex_enter(SES_MUTEX); 939 while (ssc->ses_sbufbsy) { 940 cv_wait(&ssc->ses_sbufcv, &ssc->ses_devp->sd_mutex); 941 } 942 ssc->ses_sbufbsy = 1; 943 mutex_exit(SES_MUTEX); 944 945 /* 946 * If the device is powered down, request it's activation. 947 * This check must be done after setting ses_sbufbsy! 948 */ 949 if (ssc->ses_suspended && 950 ddi_dev_is_needed(SES_DEVINFO(ssc), 0, 1) != DDI_SUCCESS) { 951 mutex_enter(SES_MUTEX); 952 ssc->ses_sbufbsy = 0; 953 mutex_exit(SES_MUTEX); 954 return (EIO); 955 } 956 957 958 bcopy(lc, scmd, sizeof (Uscmd)); 959 960 if (ddi_copyin(lc->uscsi_cdb, &ssc->ses_srqcdb, 961 (size_t)scmd->uscsi_cdblen, Cf)) { 962 mutex_enter(SES_MUTEX); 963 ssc->ses_sbufbsy = 0; 964 cv_signal(&ssc->ses_sbufcv); 965 mutex_exit(SES_MUTEX); 966 SES_LOG(ssc, SES_CE_DEBUG2, efl, __LINE__); 967 return (EFAULT); 968 } 969 scmd->uscsi_cdb = (char *)ssc->ses_srqcdb; 970 971 972 if (scmd->uscsi_flags & USCSI_RQENABLE) { 973 scmd->uscsi_rqlen = min(SENSE_LENGTH, scmd->uscsi_rqlen); 974 scmd->uscsi_rqresid = scmd->uscsi_rqlen; 975 scmd->uscsi_rqbuf = (char *)&ssc->ses_srqsbuf; 976 } else { 977 scmd->uscsi_flags &= ~USCSI_RQENABLE; 978 scmd->uscsi_rqlen = 0; 979 scmd->uscsi_rqresid = 0; 980 scmd->uscsi_rqbuf = (char *)NULL; 981 } 982 983 /* 984 * Drive on.. 985 */ 986 rw = (scmd->uscsi_flags & USCSI_READ) ? B_READ : B_WRITE; 987 988 /* 989 * We're going to do actual I/O, 990 * let physio do all the right things. 991 */ 992 bp = ssc->ses_sbufp; 993 bp->av_back = (struct buf *)NULL; 994 bp->av_forw = (struct buf *)NULL; 995 bp->b_back = (struct buf *)ssc; 996 bp->b_edev = NODEV; 997 998 if (scmd->uscsi_cdblen == CDB_GROUP0) { 999 SES_LOG(ssc, SES_CE_DEBUG7, 1000 "scsi_cmd: %x %x %x %x %x %x", 1001 ssc->ses_srqcdb[0], ssc->ses_srqcdb[1], 1002 ssc->ses_srqcdb[2], ssc->ses_srqcdb[3], 1003 ssc->ses_srqcdb[4], ssc->ses_srqcdb[5]); 1004 } else { 1005 SES_LOG(ssc, SES_CE_DEBUG7, 1006 "scsi cmd: %x %x %x %x %x %x %x %x %x %x", 1007 ssc->ses_srqcdb[0], ssc->ses_srqcdb[1], 1008 ssc->ses_srqcdb[2], ssc->ses_srqcdb[3], 1009 ssc->ses_srqcdb[4], ssc->ses_srqcdb[5], 1010 ssc->ses_srqcdb[6], ssc->ses_srqcdb[7], 1011 ssc->ses_srqcdb[8], ssc->ses_srqcdb[9]); 1012 } 1013 1014 if (scmd->uscsi_buflen) { 1015 struct iovec aiov; 1016 struct uio auio; 1017 struct uio *uio = &auio; 1018 1019 bzero(&auio, sizeof (struct uio)); 1020 bzero(&aiov, sizeof (struct iovec)); 1021 1022 aiov.iov_base = scmd->uscsi_bufaddr; 1023 aiov.iov_len = scmd->uscsi_buflen; 1024 uio->uio_iov = &aiov; 1025 uio->uio_iovcnt = 1; 1026 uio->uio_resid = aiov.iov_len; 1027 uio->uio_segflg = 1028 (Df & FKIOCTL)? UIO_SYSSPACE : UIO_USERSPACE; 1029 1030 /* 1031 * Call physio and let that do the rest. 1032 * Note: we wait there until the command is complete. 1033 */ 1034 err = physio(ses_start, bp, NODEV, rw, minphys, uio); 1035 scmd->uscsi_resid = bp->b_resid; 1036 } else { 1037 /* 1038 * Since we do not move any data in this section 1039 * call ses_start directly. Mimic physio. 1040 */ 1041 bp->b_flags = B_BUSY | rw; 1042 bp->b_bcount = 0; 1043 (void) ses_start(bp); 1044 scmd->uscsi_resid = 0; 1045 err = biowait(bp); 1046 } 1047 1048 1049 /* 1050 * Copy status and sense data to where it needs to be.. 1051 * If the sender of the scsi command is in user space, 1052 * mask off the high bits. 1053 */ 1054 lc->uscsi_status = scmd->uscsi_status; 1055 if (lc->uscsi_status) 1056 SES_LOG(ssc, SES_CE_DEBUG5, "status %x", lc->uscsi_status); 1057 lc->uscsi_resid = scmd->uscsi_resid; 1058 1059 rqlen = scmd->uscsi_rqlen - scmd->uscsi_rqresid; 1060 lc->uscsi_rqresid = scmd->uscsi_rqlen - rqlen; 1061 1062 if (lc->uscsi_rqbuf && rqlen) { 1063 SES_LOG(ssc, SES_CE_DEBUG5, "Sense Key %x", 1064 scmd->uscsi_rqbuf[2] & 0xf); 1065 if (ddi_copyout(scmd->uscsi_rqbuf, lc->uscsi_rqbuf, 1066 rqlen, Rf)) { 1067 SES_LOG(ssc, SES_CE_DEBUG2, 1068 "ses_uscsi_cmd: rqbuf copy-out problem"); 1069 SES_LOG(ssc, SES_CE_DEBUG2, efl, __LINE__); 1070 err = EFAULT; 1071 } 1072 } 1073 1074 /* 1075 * Free up allocated resources. 1076 */ 1077 mutex_enter(SES_MUTEX); 1078 ssc->ses_sbufbsy = 0; 1079 cv_signal(&ssc->ses_sbufcv); 1080 mutex_exit(SES_MUTEX); 1081 1082 /* 1083 * Copy out changed values 1084 */ 1085 #ifdef _MULTI_DATAMODEL 1086 if (uc != NULL) { 1087 uscsi_cmdtouscsi_cmd32(lc, uc); 1088 if (ddi_copyout(uc, Uc, sizeof (*uc), Uf)) { 1089 SES_LOG(ssc, SES_CE_DEBUG2, efl, __LINE__); 1090 return (EFAULT); 1091 } 1092 } else 1093 #endif /* _MULTI_DATAMODEL */ 1094 1095 if (ddi_copyout(lc, Uc, sizeof (*lc), Uf)) { 1096 SES_LOG(ssc, SES_CE_DEBUG2, efl, __LINE__); 1097 if (err == 0) 1098 err = EFAULT; 1099 } 1100 if (err) 1101 SES_LOG(ssc, SES_CE_DEBUG5, "ses_uscsi_cmd returning %d", err); 1102 return (err); 1103 } 1104 1105 1106 1107 /* 1108 * Command start and done functions. 1109 */ 1110 static int 1111 ses_start(struct buf *bp) 1112 { 1113 ses_softc_t *ssc = (ses_softc_t *)bp->b_back; 1114 1115 SES_LOG(ssc, SES_CE_DEBUG9, "ses_start"); 1116 if (!BP_PKT(bp)) { 1117 /* 1118 * Allocate a packet. 1119 */ 1120 ses_get_pkt(bp, SLEEP_FUNC); 1121 if (!BP_PKT(bp)) { 1122 int err; 1123 bp->b_resid = bp->b_bcount; 1124 if (geterror(bp) == 0) 1125 SET_BP_ERROR(bp, EIO); 1126 err = geterror(bp); 1127 biodone(bp); 1128 return (err); 1129 } 1130 } 1131 1132 /* 1133 * Initialize the transfer residue, error code, and retry count. 1134 */ 1135 bp->b_resid = 0; 1136 SET_BP_ERROR(bp, 0); 1137 1138 #if !defined(lint) 1139 _NOTE(NO_COMPETING_THREADS_NOW); 1140 #endif /* !defined(lint) */ 1141 ssc->ses_retries = ses_retry_count; 1142 1143 #if !defined(lint) 1144 /* LINTED */ 1145 _NOTE(COMPETING_THREADS_NOW); 1146 #endif /* !defined(lint) */ 1147 1148 SES_LOG(ssc, SES_CE_DEBUG9, "ses_start -> scsi_transport"); 1149 switch (scsi_transport(BP_PKT(bp))) { 1150 case TRAN_ACCEPT: 1151 return (0); 1152 /* break; */ 1153 1154 case TRAN_BUSY: 1155 SES_LOG(ssc, SES_CE_DEBUG2, 1156 "ses_start: TRANSPORT BUSY"); 1157 SES_ENABLE_RESTART(SES_RESTART_TIME, BP_PKT(bp)); 1158 return (0); 1159 /* break; */ 1160 1161 default: 1162 SES_LOG(ssc, SES_CE_DEBUG2, "TRANSPORT ERROR\n"); 1163 SET_BP_ERROR(bp, EIO); 1164 scsi_destroy_pkt(BP_PKT(bp)); 1165 SET_BP_PKT(bp, NULL); 1166 biodone(bp); 1167 return (EIO); 1168 /* break; */ 1169 } 1170 } 1171 1172 1173 static void 1174 ses_get_pkt(struct buf *bp, int (*func)()) 1175 { 1176 ses_softc_t *ssc = (ses_softc_t *)bp->b_back; 1177 Uscmd *scmd = &ssc->ses_uscsicmd; 1178 struct scsi_pkt *pkt; 1179 int stat_size; 1180 1181 if ((scmd->uscsi_flags & USCSI_RQENABLE) && ssc->ses_arq) { 1182 stat_size = sizeof (struct scsi_arq_status); 1183 } else { 1184 stat_size = 1; 1185 } 1186 1187 if (bp->b_bcount) { 1188 pkt = scsi_init_pkt(SES_ROUTE(ssc), NULL, bp, 1189 scmd->uscsi_cdblen, stat_size, 0, 0, func, (caddr_t)ssc); 1190 } else { 1191 pkt = scsi_init_pkt(SES_ROUTE(ssc), NULL, NULL, 1192 scmd->uscsi_cdblen, stat_size, 0, 0, func, (caddr_t)ssc); 1193 } 1194 SET_BP_PKT(bp, pkt); 1195 if (pkt == (struct scsi_pkt *)NULL) 1196 return; 1197 bcopy(scmd->uscsi_cdb, pkt->pkt_cdbp, (size_t)scmd->uscsi_cdblen); 1198 pkt->pkt_time = scmd->uscsi_timeout; 1199 1200 pkt->pkt_comp = ses_callback; 1201 pkt->pkt_private = (opaque_t)ssc; 1202 } 1203 1204 1205 /* 1206 * Restart ses command. 1207 */ 1208 static void 1209 ses_restart(void *arg) 1210 { 1211 struct scsi_pkt *pkt = (struct scsi_pkt *)arg; 1212 ses_softc_t *ssc = (ses_softc_t *)pkt->pkt_private; 1213 struct buf *bp = ssc->ses_sbufp; 1214 SES_LOG(ssc, SES_CE_DEBUG9, "ses_restart"); 1215 1216 ssc->ses_restart_id = NULL; 1217 1218 switch (scsi_transport(pkt)) { 1219 case TRAN_ACCEPT: 1220 SES_LOG(ssc, SES_CE_DEBUG9, 1221 "RESTART %d ok", ssc->ses_retries); 1222 return; 1223 /* break; */ 1224 case TRAN_BUSY: 1225 SES_LOG(ssc, SES_CE_DEBUG1, 1226 "RESTART %d TRANSPORT BUSY\n", ssc->ses_retries); 1227 if (ssc->ses_retries > SES_NO_RETRY) { 1228 ssc->ses_retries -= SES_BUSY_RETRY; 1229 SES_ENABLE_RESTART(SES_RESTART_TIME, pkt); 1230 return; 1231 } 1232 SET_BP_ERROR(bp, EBUSY); 1233 break; 1234 default: 1235 SET_BP_ERROR(bp, EIO); 1236 break; 1237 } 1238 SES_LOG(ssc, SES_CE_DEBUG1, 1239 "RESTART %d TRANSPORT FAILED\n", ssc->ses_retries); 1240 1241 pkt = (struct scsi_pkt *)bp->av_back; 1242 scsi_destroy_pkt(pkt); 1243 bp->b_resid = bp->b_bcount; 1244 SET_BP_PKT(bp, NULL); 1245 biodone(bp); 1246 } 1247 1248 1249 /* 1250 * Command completion processing 1251 */ 1252 #define HBA_RESET (STAT_BUS_RESET|STAT_DEV_RESET|STAT_ABORTED) 1253 static void 1254 ses_callback(struct scsi_pkt *pkt) 1255 { 1256 ses_softc_t *ssc = (ses_softc_t *)pkt->pkt_private; 1257 struct buf *bp; 1258 Uscmd *scmd; 1259 int err; 1260 char action; 1261 1262 bp = ssc->ses_sbufp; 1263 scmd = &ssc->ses_uscsicmd; 1264 /* SES_LOG(ssc, SES_CE_DEBUG9, "ses_callback"); */ 1265 1266 /* 1267 * Optimization: Normal completion. 1268 */ 1269 if (pkt->pkt_reason == CMD_CMPLT && 1270 !SCBP_C(pkt) && 1271 !(pkt->pkt_flags & FLAG_SENSING) && 1272 !pkt->pkt_resid) { 1273 scsi_destroy_pkt(pkt); 1274 SET_BP_PKT(bp, NULL); 1275 biodone(bp); 1276 return; 1277 } 1278 1279 1280 /* 1281 * Abnormal completion. 1282 * 1283 * Assume most common error initially. 1284 */ 1285 err = EIO; 1286 action = COMMAND_DONE; 1287 if (scmd->uscsi_flags & USCSI_DIAGNOSE) { 1288 ssc->ses_retries = SES_NO_RETRY; 1289 } 1290 1291 CHECK_PKT: 1292 if (pkt->pkt_reason != CMD_CMPLT) { 1293 /* Process transport errors. */ 1294 switch (pkt->pkt_reason) { 1295 case CMD_TIMEOUT: 1296 /* 1297 * If the transport layer didn't clear the problem, 1298 * reset the target. 1299 */ 1300 if (! (pkt->pkt_statistics & HBA_RESET)) { 1301 (void) scsi_reset(&pkt->pkt_address, RESET_TARGET); 1302 } 1303 err = ETIMEDOUT; 1304 break; 1305 1306 case CMD_INCOMPLETE: 1307 case CMD_UNX_BUS_FREE: 1308 /* 1309 * No response? If probing, give up. 1310 * Otherwise, keep trying until retries exhausted. 1311 * Then lockdown the driver as the device is 1312 * unplugged. 1313 */ 1314 if (ssc->ses_retries <= SES_NO_RETRY && 1315 !(scmd->uscsi_flags & USCSI_DIAGNOSE)) { 1316 ssc->ses_present = SES_CLOSED; 1317 } 1318 /* Inhibit retries to speed probe/attach. */ 1319 if (ssc->ses_present < SES_OPEN) { 1320 ssc->ses_retries = SES_NO_RETRY; 1321 } 1322 /* SES_CMD_RETRY4(ssc->ses_retries); */ 1323 err = ENXIO; 1324 break; 1325 1326 case CMD_DATA_OVR: 1327 /* 1328 * XXX: Some HBA's (e.g. Adaptec 1740 and 1329 * earlier ISP revs) report a DATA OVERRUN 1330 * error instead of a transfer residue. So, 1331 * we convert the error and restart. 1332 */ 1333 if ((bp->b_bcount - pkt->pkt_resid) > 0) { 1334 SES_LOG(ssc, SES_CE_DEBUG6, 1335 "ignoring overrun"); 1336 pkt->pkt_reason = CMD_CMPLT; 1337 err = EOK; 1338 goto CHECK_PKT; 1339 } 1340 ssc->ses_retries = SES_NO_RETRY; 1341 /* err = EIO; */ 1342 break; 1343 1344 case CMD_DMA_DERR: 1345 ssc->ses_retries = SES_NO_RETRY; 1346 err = EFAULT; 1347 break; 1348 1349 default: 1350 /* err = EIO; */ 1351 break; 1352 } 1353 if (pkt == ssc->ses_rqpkt) { 1354 SES_LOG(ssc, CE_WARN, fail_msg, 1355 "Request Sense ", 1356 scsi_rname(pkt->pkt_reason), 1357 (ssc->ses_retries > 0)? 1358 "retrying": "giving up"); 1359 pkt = (struct scsi_pkt *)bp->av_back; 1360 action = QUE_SENSE; 1361 } else { 1362 SES_LOG(ssc, CE_WARN, fail_msg, 1363 "", scsi_rname(pkt->pkt_reason), 1364 (ssc->ses_retries > 0)? 1365 "retrying": "giving up"); 1366 action = QUE_COMMAND; 1367 } 1368 /* Device exists, allow full error recovery. */ 1369 if (ssc->ses_retries > SES_NO_RETRY) { 1370 ssc->ses_present = SES_OPEN; 1371 } 1372 1373 1374 /* 1375 * Process status and sense data errors. 1376 */ 1377 } else { 1378 ssc->ses_present = SES_OPEN; 1379 action = ses_decode_sense(pkt, &err); 1380 } 1381 1382 1383 /* 1384 * Initiate error recovery action, as needed. 1385 */ 1386 switch (action) { 1387 case QUE_COMMAND_NOW: 1388 /* SES_LOG(ssc, SES_CE_DEBUG1, "retrying cmd now"); */ 1389 if (ssc->ses_retries > SES_NO_RETRY) { 1390 ssc->ses_retries -= SES_CMD_RETRY; 1391 scmd->uscsi_status = 0; 1392 if (ssc->ses_arq) 1393 bzero(pkt->pkt_scbp, sizeof (struct scsi_arq_status)); 1394 1395 if (scsi_transport((struct scsi_pkt *)bp->av_back) 1396 != TRAN_ACCEPT) { 1397 SES_ENABLE_RESTART(SES_RESTART_TIME, 1398 (struct scsi_pkt *)bp->av_back); 1399 } 1400 return; 1401 } 1402 break; 1403 1404 case QUE_COMMAND: 1405 SES_LOG(ssc, SES_CE_DEBUG1, "retrying cmd"); 1406 if (ssc->ses_retries > SES_NO_RETRY) { 1407 ssc->ses_retries -= 1408 (err == EBUSY)? SES_BUSY_RETRY: SES_CMD_RETRY; 1409 scmd->uscsi_status = 0; 1410 if (ssc->ses_arq) 1411 bzero(pkt->pkt_scbp, sizeof (struct scsi_arq_status)); 1412 1413 SES_ENABLE_RESTART( 1414 (err == EBUSY)? SES_BUSY_TIME: SES_RESTART_TIME, 1415 (struct scsi_pkt *)bp->av_back); 1416 return; 1417 } 1418 break; 1419 1420 case QUE_SENSE: 1421 SES_LOG(ssc, SES_CE_DEBUG1, "retrying sense"); 1422 if (ssc->ses_retries > SES_NO_RETRY) { 1423 ssc->ses_retries -= SES_SENSE_RETRY; 1424 scmd->uscsi_status = 0; 1425 bzero(&ssc->ses_srqsbuf, 1426 sizeof (struct scsi_extended_sense)); 1427 1428 if (scsi_transport(ssc->ses_rqpkt) != TRAN_ACCEPT) { 1429 SES_ENABLE_RESTART(SES_RESTART_TIME, 1430 ssc->ses_rqpkt); 1431 } 1432 return; 1433 } 1434 break; 1435 1436 case COMMAND_DONE: 1437 SES_LOG(ssc, SES_CE_DEBUG4, "cmd done"); 1438 pkt = (struct scsi_pkt *)bp->av_back; 1439 bp->b_resid = pkt->pkt_resid; 1440 if (bp->b_resid) { 1441 SES_LOG(ssc, SES_CE_DEBUG6, 1442 "transfer residue %ld(%ld)", 1443 bp->b_bcount - bp->b_resid, bp->b_bcount); 1444 } 1445 break; 1446 } 1447 pkt = (struct scsi_pkt *)bp->av_back; 1448 if (err) { 1449 SES_LOG(ssc, SES_CE_DEBUG1, "SES: ERROR %d\n", err); 1450 SET_BP_ERROR(bp, err); 1451 bp->b_resid = bp->b_bcount; 1452 } 1453 scsi_destroy_pkt(pkt); 1454 SET_BP_PKT(bp, NULL); 1455 biodone(bp); 1456 } 1457 1458 1459 /* 1460 * Check status and sense data and determine recovery. 1461 */ 1462 static int 1463 ses_decode_sense(struct scsi_pkt *pkt, int *err) 1464 { 1465 ses_softc_t *ssc = (ses_softc_t *)pkt->pkt_private; 1466 struct scsi_extended_sense *sense = 1467 (struct scsi_extended_sense *)&ssc->ses_srqsbuf; 1468 Uscmd *scmd = &ssc->ses_uscsicmd; 1469 char sense_flag = 0; 1470 uchar_t status = SCBP_C(pkt) & STATUS_MASK; 1471 char *err_action; 1472 char action; 1473 1474 /* 1475 * Process manual request sense. 1476 * Copy manual request sense to sense buffer. 1477 * 1478 * This is done if auto request sense is not enabled. 1479 * Or the auto request sense failed and the request 1480 * sense needs to be retried. 1481 */ 1482 if (pkt->pkt_flags & FLAG_SENSING) { 1483 struct buf *sbp = ssc->ses_rqbp; 1484 int amt = min(SENSE_LENGTH, 1485 sbp->b_bcount - sbp->b_resid); 1486 1487 bcopy(sbp->b_un.b_addr, sense, amt); 1488 scmd->uscsi_rqresid = scmd->uscsi_rqlen - amt; 1489 sense_flag = 1; 1490 1491 /* 1492 * Process auto request sense. 1493 * Copy auto request sense to sense buffer. 1494 * 1495 * If auto request sense failed due to transport error, 1496 * retry the command. Otherwise process the status and 1497 * sense data. 1498 */ 1499 } else if (ssc->ses_arq && pkt->pkt_state & STATE_ARQ_DONE) { 1500 struct scsi_arq_status *arq = 1501 (struct scsi_arq_status *)(pkt->pkt_scbp); 1502 int amt = min(sizeof (arq->sts_sensedata), SENSE_LENGTH); 1503 uchar_t *arq_status = (uchar_t *)&arq->sts_rqpkt_status; 1504 1505 if (arq->sts_rqpkt_reason != CMD_CMPLT) { 1506 return (QUE_COMMAND); 1507 } 1508 bcopy(&arq->sts_sensedata, sense, amt); 1509 scmd->uscsi_status = status; 1510 scmd->uscsi_rqresid = scmd->uscsi_rqlen - amt; 1511 status = *arq_status & STATUS_MASK; 1512 pkt->pkt_state &= ~STATE_ARQ_DONE; 1513 sense_flag = 1; 1514 } 1515 1516 1517 /* 1518 * Check status of REQUEST SENSE or command. 1519 * 1520 * If it's not successful, try retrying the original command 1521 * and hope that it goes away. If not, we'll eventually run 1522 * out of retries and die. 1523 */ 1524 switch (status) { 1525 case STATUS_GOOD: 1526 case STATUS_INTERMEDIATE: 1527 case STATUS_MET: 1528 /* 1529 * If the command status is ok, we're done. 1530 * Otherwise, examine the request sense data. 1531 */ 1532 if (! sense_flag) { 1533 *err = EOK; 1534 return (COMMAND_DONE); 1535 } 1536 break; 1537 1538 case STATUS_CHECK: 1539 SES_LOG(ssc, SES_CE_DEBUG3, "status decode: check"); 1540 *err = EIO; 1541 return (QUE_SENSE); 1542 /* break; */ 1543 1544 case STATUS_BUSY: 1545 SES_LOG(ssc, SES_CE_DEBUG1, "status decode: busy"); 1546 /* SES_CMD_RETRY2(ssc->ses_retries); */ 1547 *err = EBUSY; 1548 return (QUE_COMMAND); 1549 /* break; */ 1550 1551 case STATUS_RESERVATION_CONFLICT: 1552 SES_LOG(ssc, SES_CE_DEBUG1, "status decode: reserved"); 1553 *err = EACCES; 1554 return (COMMAND_DONE_ERROR); 1555 /* break; */ 1556 1557 case STATUS_TERMINATED: 1558 SES_LOG(ssc, SES_CE_DEBUG1, "status decode: terminated"); 1559 *err = ECANCELED; 1560 return (COMMAND_DONE_ERROR); 1561 /* break; */ 1562 1563 default: 1564 SES_LOG(ssc, SES_CE_DEBUG1, "status 0x%x", status); 1565 *err = EIO; 1566 return (QUE_COMMAND); 1567 /* break; */ 1568 } 1569 1570 1571 /* 1572 * Check REQUEST SENSE error code. 1573 * 1574 * Either there's no error, a retryable error, 1575 * or it's dead. SES devices aren't very complex. 1576 */ 1577 err_action = "retrying"; 1578 switch (sense->es_key) { 1579 case KEY_RECOVERABLE_ERROR: 1580 *err = EOK; 1581 err_action = "recovered"; 1582 action = COMMAND_DONE; 1583 break; 1584 1585 case KEY_UNIT_ATTENTION: 1586 /* 1587 * This is common for RAID! 1588 */ 1589 /* *err = EIO; */ 1590 SES_CMD_RETRY1(ssc->ses_retries); 1591 action = QUE_COMMAND_NOW; 1592 break; 1593 1594 case KEY_NOT_READY: 1595 case KEY_NO_SENSE: 1596 /* *err = EIO; */ 1597 action = QUE_COMMAND; 1598 break; 1599 1600 default: 1601 /* *err = EIO; */ 1602 err_action = "fatal"; 1603 action = COMMAND_DONE_ERROR; 1604 break; 1605 } 1606 SES_LOG(ssc, SES_CE_DEBUG1, 1607 "cdb[0]= 0x%x %s, key=0x%x, ASC/ASCQ=0x%x/0x%x", 1608 scmd->uscsi_cdb[0], err_action, 1609 sense->es_key, sense->es_add_code, sense->es_qual_code); 1610 1611 #ifdef not 1612 /* 1613 * Dump cdb and sense data stat's for manufacturing. 1614 */ 1615 if (DEBUGGING_ERR || sd_error_level == SDERR_ALL) { 1616 auto buf[128]; 1617 1618 p = pkt->pkt_cdbp; 1619 if ((j = scsi_cdb_size[CDB_GROUPID(*p)]) == 0) 1620 j = CDB_SIZE; 1621 1622 /* Print cdb */ 1623 (void) sprintf(buf, "cmd:"); 1624 for (i = 0; i < j; i++) { 1625 (void) sprintf(&buf[strlen(buf)], 1626 hex, (uchar_t)*p++); 1627 } 1628 SES_LOG(ssc, SES_CE_DEBUG3, "%s", buf); 1629 1630 /* Suppress trailing zero's in sense data */ 1631 if (amt > 3) { 1632 p = (char *)devp->sd_sense + amt; 1633 for (j = amt; j > 3; j--) { 1634 if (*(--p)) break; 1635 } 1636 } else { 1637 j = amt; 1638 } 1639 1640 /* Print sense data. */ 1641 (void) sprintf(buf, "sense:"); 1642 p = (char *)devp->sd_sense; 1643 for (i = 0; i < j; i++) { 1644 (void) sprintf(&buf[strlen(buf)], 1645 hex, (uchar_t)*p++); 1646 } 1647 SES_LOG(ssc, SES_CE_DEBUG3, "%s", buf); 1648 } 1649 #endif /* not */ 1650 return (action); 1651 } 1652 1653 1654 /*PRINTFLIKE3*/ 1655 void 1656 ses_log(ses_softc_t *ssc, int level, const char *fmt, ...) 1657 { 1658 va_list ap; 1659 char buf[256]; 1660 1661 va_start(ap, fmt); 1662 (void) vsprintf(buf, fmt, ap); 1663 va_end(ap); 1664 1665 if (ssc == (ses_softc_t *)NULL) { 1666 switch (level) { 1667 case SES_CE_DEBUG1: 1668 if (ses_debug > 1) 1669 cmn_err(CE_NOTE, "%s", buf); 1670 break; 1671 case SES_CE_DEBUG2: 1672 if (ses_debug > 2) 1673 cmn_err(CE_NOTE, "%s", buf); 1674 break; 1675 case SES_CE_DEBUG3: 1676 if (ses_debug > 3) 1677 cmn_err(CE_NOTE, "%s", buf); 1678 break; 1679 case SES_CE_DEBUG4: 1680 if (ses_debug > 4) 1681 cmn_err(CE_NOTE, "%s", buf); 1682 break; 1683 case SES_CE_DEBUG5: 1684 if (ses_debug > 5) 1685 cmn_err(CE_NOTE, "%s", buf); 1686 break; 1687 case SES_CE_DEBUG6: 1688 if (ses_debug > 6) 1689 cmn_err(CE_NOTE, "%s", buf); 1690 break; 1691 case SES_CE_DEBUG7: 1692 if (ses_debug > 7) 1693 cmn_err(CE_NOTE, "%s", buf); 1694 break; 1695 case SES_CE_DEBUG8: 1696 if (ses_debug > 8) 1697 cmn_err(CE_NOTE, "%s", buf); 1698 break; 1699 case SES_CE_DEBUG9: 1700 if (ses_debug > 9) 1701 cmn_err(CE_NOTE, "%s", buf); 1702 break; 1703 case CE_NOTE: 1704 case CE_WARN: 1705 case CE_PANIC: 1706 cmn_err(level, "%s", buf); 1707 break; 1708 case SES_CE_DEBUG: 1709 default: 1710 cmn_err(CE_NOTE, "%s", buf); 1711 break; 1712 } 1713 return; 1714 } 1715 1716 switch (level) { 1717 case CE_CONT: 1718 case CE_NOTE: 1719 case CE_WARN: 1720 case CE_PANIC: 1721 scsi_log(SES_DEVINFO(ssc), (char *)Snm, level, Str, buf); 1722 break; 1723 case SES_CE_DEBUG1: 1724 if (ses_debug > 1) 1725 scsi_log(SES_DEVINFO(ssc), (char *)Snm, SCSI_DEBUG, 1726 Str, buf); 1727 break; 1728 case SES_CE_DEBUG2: 1729 if (ses_debug > 2) 1730 scsi_log(SES_DEVINFO(ssc), (char *)Snm, SCSI_DEBUG, 1731 Str, buf); 1732 break; 1733 case SES_CE_DEBUG3: 1734 if (ses_debug > 3) 1735 scsi_log(SES_DEVINFO(ssc), (char *)Snm, SCSI_DEBUG, 1736 Str, buf); 1737 break; 1738 case SES_CE_DEBUG4: 1739 if (ses_debug > 4) 1740 scsi_log(SES_DEVINFO(ssc), (char *)Snm, SCSI_DEBUG, 1741 Str, buf); 1742 break; 1743 case SES_CE_DEBUG5: 1744 if (ses_debug > 5) 1745 scsi_log(SES_DEVINFO(ssc), (char *)Snm, SCSI_DEBUG, 1746 Str, buf); 1747 break; 1748 case SES_CE_DEBUG6: 1749 if (ses_debug > 6) 1750 scsi_log(SES_DEVINFO(ssc), (char *)Snm, SCSI_DEBUG, 1751 Str, buf); 1752 break; 1753 case SES_CE_DEBUG7: 1754 if (ses_debug > 7) 1755 scsi_log(SES_DEVINFO(ssc), (char *)Snm, SCSI_DEBUG, 1756 Str, buf); 1757 break; 1758 case SES_CE_DEBUG8: 1759 if (ses_debug > 8) 1760 scsi_log(SES_DEVINFO(ssc), (char *)Snm, SCSI_DEBUG, 1761 Str, buf); 1762 break; 1763 case SES_CE_DEBUG9: 1764 if (ses_debug > 9) 1765 scsi_log(SES_DEVINFO(ssc), (char *)Snm, SCSI_DEBUG, 1766 Str, buf); 1767 break; 1768 case SES_CE_DEBUG: 1769 default: 1770 scsi_log(SES_DEVINFO(ssc), (char *)Snm, SCSI_DEBUG, Str, buf); 1771 break; 1772 } 1773 } 1774 /* 1775 * mode: c 1776 * Local variables: 1777 * c-indent-level: 8 1778 * c-brace-imaginary-offset: 0 1779 * c-brace-offset: -8 1780 * c-argdecl-indent: 8 1781 * c-label-offset: -8 1782 * c-continued-statement-offset: 8 1783 * c-continued-brace-offset: 0 1784 * End: 1785 */ 1786