ses.c revision 6316:40d5384cc8b2
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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21/* 22 * Enclosure Services Device target driver 23 * 24 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 25 * Use is subject to license terms. 26 */ 27#pragma ident "%Z%%M% %I% %E% SMI" 28 29#include <sys/modctl.h> 30#include <sys/file.h> 31#include <sys/scsi/scsi.h> 32#include <sys/scsi/generic/status.h> 33#include <sys/scsi/targets/sesio.h> 34#include <sys/scsi/targets/ses.h> 35 36 37 38/* 39 * Power management defines (should be in a common include file?) 40 */ 41#define PM_HARDWARE_STATE_PROP "pm-hardware-state" 42#define PM_NEEDS_SUSPEND_RESUME "needs-suspend-resume" 43 44 45/* 46 * Global Driver Data 47 */ 48int ses_io_time = SES_IO_TIME; 49 50static int ses_retry_count = SES_RETRY_COUNT * SES_RETRY_MULTIPLIER; 51 52#ifdef DEBUG 53int ses_debug = 0; 54#else /* DEBUG */ 55#define ses_debug 0 56#endif /* DEBUG */ 57 58 59/* 60 * External Enclosure Functions 61 */ 62extern int ses_softc_init(ses_softc_t *, int); 63extern int ses_init_enc(ses_softc_t *); 64extern int ses_get_encstat(ses_softc_t *, int); 65extern int ses_set_encstat(ses_softc_t *, uchar_t, int); 66extern int ses_get_objstat(ses_softc_t *, ses_objarg *, int); 67extern int ses_set_objstat(ses_softc_t *, ses_objarg *, int); 68 69extern int safte_softc_init(ses_softc_t *, int); 70extern int safte_init_enc(ses_softc_t *); 71extern int safte_get_encstat(ses_softc_t *, int); 72extern int safte_set_encstat(ses_softc_t *, uchar_t, int); 73extern int safte_get_objstat(ses_softc_t *, ses_objarg *, int); 74extern int safte_set_objstat(ses_softc_t *, ses_objarg *, int); 75 76extern int sen_softc_init(ses_softc_t *, int); 77extern int sen_init_enc(ses_softc_t *); 78extern int sen_get_encstat(ses_softc_t *, int); 79extern int sen_set_encstat(ses_softc_t *, uchar_t, int); 80extern int sen_get_objstat(ses_softc_t *, ses_objarg *, int); 81extern int sen_set_objstat(ses_softc_t *, ses_objarg *, int); 82 83/* 84 * Local Function prototypes 85 */ 86static int ses_info(dev_info_t *, ddi_info_cmd_t, void *, void **); 87static int ses_probe(dev_info_t *); 88static int ses_attach(dev_info_t *, ddi_attach_cmd_t); 89static int ses_detach(dev_info_t *, ddi_detach_cmd_t); 90 91static int is_enc_dev(ses_softc_t *, struct scsi_inquiry *, int, enctyp *); 92static int ses_doattach(dev_info_t *dip); 93 94static int ses_open(dev_t *, int, int, cred_t *); 95static int ses_close(dev_t, int, int, cred_t *); 96static int ses_ioctl(dev_t, int, intptr_t, int, cred_t *, int *); 97 98static encvec vecs[3] = { 99{ 100 ses_softc_init, ses_init_enc, ses_get_encstat, 101 ses_set_encstat, ses_get_objstat, ses_set_objstat 102}, 103{ 104 safte_softc_init, safte_init_enc, safte_get_encstat, 105 safte_set_encstat, safte_get_objstat, safte_set_objstat, 106}, 107{ 108 sen_softc_init, sen_init_enc, sen_get_encstat, 109 sen_set_encstat, sen_get_objstat, sen_set_objstat 110} 111}; 112 113 114/* 115 * Local Functions 116 */ 117static int ses_start(struct buf *bp); 118static int ses_decode_sense(struct scsi_pkt *pkt, int *err); 119 120static void ses_get_pkt(struct buf *bp, int (*func)(opaque_t)); 121static void ses_callback(struct scsi_pkt *pkt); 122static void ses_restart(void *arg); 123 124 125/* 126 * Local Static Data 127 */ 128#ifndef D_HOTPLUG 129#define D_HOTPLUG 0 130#endif /* D_HOTPLUG */ 131 132static struct cb_ops ses_cb_ops = { 133 ses_open, /* open */ 134 ses_close, /* close */ 135 nodev, /* strategy */ 136 nodev, /* print */ 137 nodev, /* dump */ 138 nodev, /* read */ 139 nodev, /* write */ 140 ses_ioctl, /* ioctl */ 141 nodev, /* devmap */ 142 nodev, /* mmap */ 143 nodev, /* segmap */ 144 nochpoll, /* poll */ 145 ddi_prop_op, /* cb_prop_op */ 146 0, /* streamtab */ 147#if !defined(CB_REV) 148 D_MP | D_NEW | D_HOTPLUG /* Driver compatibility flag */ 149#else /* !defined(CB_REV) */ 150 D_MP | D_NEW | D_HOTPLUG, /* Driver compatibility flag */ 151 CB_REV, /* cb_ops version number */ 152 nodev, /* aread */ 153 nodev /* awrite */ 154#endif /* !defined(CB_REV) */ 155}; 156 157static struct dev_ops ses_dev_ops = { 158 DEVO_REV, /* devo_rev, */ 159 0, /* refcnt */ 160 ses_info, /* info */ 161 nulldev, /* identify */ 162 ses_probe, /* probe */ 163 ses_attach, /* attach */ 164 ses_detach, /* detach */ 165 nodev, /* reset */ 166 &ses_cb_ops, /* driver operations */ 167 (struct bus_ops *)NULL, /* bus operations */ 168 NULL /* power */ 169}; 170 171static void *estate = NULL; 172static const char *Snm = "ses"; 173static const char *Str = "%s\n"; 174static const char *efl = "copyin/copyout EFAULT @ line %d"; 175static const char *fail_msg = "%stransport failed: reason '%s': %s"; 176 177 178 179/* 180 * autoconfiguration routines. 181 */ 182char _depends_on[] = "misc/scsi"; 183 184static struct modldrv modldrv = { 185 &mod_driverops, "SCSI Enclosure Services %I%", &ses_dev_ops 186}; 187 188static struct modlinkage modlinkage = { 189 MODREV_1, &modldrv, NULL 190}; 191 192 193int 194_init(void) 195{ 196 int status; 197 status = ddi_soft_state_init(&estate, sizeof (ses_softc_t), 0); 198 if (status == 0) { 199 if ((status = mod_install(&modlinkage)) != 0) { 200 ddi_soft_state_fini(&estate); 201 } 202 } 203 return (status); 204} 205 206int 207_fini(void) 208{ 209 int status; 210 if ((status = mod_remove(&modlinkage)) != 0) { 211 return (status); 212 } 213 ddi_soft_state_fini(&estate); 214 return (status); 215} 216 217int 218_info(struct modinfo *modinfop) 219{ 220 return (mod_info(&modlinkage, modinfop)); 221} 222 223static int 224ses_probe(dev_info_t *dip) 225{ 226 int err; 227 struct scsi_device *devp; 228 enctyp ep; 229 230 /* 231 * I finally figured out why we return success 232 * on every probe. The devices that we attach to 233 * don't all report as being the same "device type" 234 * 235 * 1) A5x00 -- report as Enclosure Services (0xD) SES 236 * 2) A1000 -- report as Direct Access (0x0) SES 237 * uses the same target as raid controler. 238 * 3) D1000 -- report as processor (0x3) SAFTE 239 * 3) D240 -- report as processor (0x3) SAFTE 240 * 241 * We also reportedly attach to SEN devices which I 242 * believe reside in a Tobasco tray. I have never 243 * been able to get one to attach. 244 * 245 */ 246 247 248 if (dip == NULL) 249 return (DDI_PROBE_FAILURE); 250 /* 251 * XXX: Breakage from the x86 folks. 252 */ 253 if (strcmp(ddi_get_name(ddi_get_parent(dip)), "ata") == 0) { 254 return (DDI_PROBE_FAILURE); 255 } 256 /* SES_LOG(NULL, SES_CE_DEBUG1, "ses_probe: OK"); */ 257 if (ddi_dev_is_sid(dip) == DDI_SUCCESS) { 258 return (DDI_PROBE_DONTCARE); 259 } 260 devp = ddi_get_driver_private(dip); 261 switch (err = scsi_probe(devp, SLEEP_FUNC)) { 262 case SCSIPROBE_EXISTS: 263 if (is_enc_dev(NULL, devp->sd_inq, SUN_INQSIZE, &ep)) { 264 break; 265 } 266 /* FALLTHROUGH */ 267 case SCSIPROBE_NORESP: 268 scsi_unprobe(devp); 269 return (DDI_PROBE_FAILURE); 270 default: 271 SES_LOG(NULL, SES_CE_DEBUG9, 272 "ses_probe: probe error %d", err); 273 scsi_unprobe(devp); 274 return (DDI_PROBE_FAILURE); 275 } 276 scsi_unprobe(devp); 277 return (DDI_PROBE_SUCCESS); 278} 279 280static int 281ses_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) 282{ 283 int inst, err; 284 ses_softc_t *ssc; 285 286 inst = ddi_get_instance(dip); 287 switch (cmd) { 288 case DDI_ATTACH: 289 SES_LOG(NULL, SES_CE_DEBUG9, "ses_attach: DDI_ATTACH ses%d", 290 inst); 291 292 err = ses_doattach(dip); 293 294 if (err == DDI_FAILURE) { 295 return (DDI_FAILURE); 296 } 297 SES_LOG(NULL, SES_CE_DEBUG4, 298 "ses_attach: DDI_ATTACH OK ses%d", inst); 299 break; 300 301 case DDI_RESUME: 302 if ((ssc = ddi_get_soft_state(estate, inst)) == NULL) { 303 return (DDI_FAILURE); 304 } 305 SES_LOG(ssc, SES_CE_DEBUG1, "ses_attach: DDI_ATTACH ses%d", 306 inst); 307 ssc->ses_suspended = 0; 308 break; 309 310 default: 311 return (DDI_FAILURE); 312 } 313 return (DDI_SUCCESS); 314} 315 316static int 317is_enc_dev(ses_softc_t *ssc, struct scsi_inquiry *inqp, int iqlen, enctyp *ep) 318{ 319 uchar_t dt = (inqp->inq_dtype & DTYPE_MASK); 320 uchar_t *iqd = (uchar_t *)inqp; 321 322 if (dt == DTYPE_ESI) { 323 if (strncmp(inqp->inq_vid, SEN_ID, SEN_ID_LEN) == 0) { 324 SES_LOG(ssc, SES_CE_DEBUG3, "SEN device found"); 325 *ep = SEN_TYPE; 326 } else if (inqp->inq_rdf > RDF_SCSI2) { 327 SES_LOG(ssc, SES_CE_DEBUG3, "SES device found"); 328 *ep = SES_TYPE; 329 } else { 330 SES_LOG(ssc, SES_CE_DEBUG3, "Pre-SCSI3 SES device"); 331 *ep = SES_TYPE; 332 } 333 return (1); 334 } 335 if ((iqd[6] & 0x40) && inqp->inq_rdf >= RDF_SCSI2) { 336 /* 337 * PassThrough Device. 338 */ 339 *ep = SES_TYPE; 340 SES_LOG(ssc, SES_CE_DEBUG3, "Passthru SES device"); 341 return (1); 342 } 343 344 if (iqlen < 47) { 345 SES_LOG(ssc, CE_NOTE, 346 "INQUIRY data too short to determine SAF-TE"); 347 return (0); 348 } 349 if (strncmp((char *)&iqd[44], "SAF-TE", 4) == 0) { 350 *ep = SAFT_TYPE; 351 SES_LOG(ssc, SES_CE_DEBUG3, "SAF-TE device found"); 352 return (1); 353 } 354 return (0); 355} 356 357 358/* 359 * Attach ses device. 360 * 361 * XXX: Power management is NOT supported. A token framework 362 * is provided that will need to be extended assuming we have 363 * ses devices we can power down. Currently, we don't have any. 364 */ 365static int 366ses_doattach(dev_info_t *dip) 367{ 368 int inst, err; 369 Scsidevp devp; 370 ses_softc_t *ssc; 371 enctyp etyp; 372 373 inst = ddi_get_instance(dip); 374 /* 375 * Workaround for bug #4154979- for some reason we can 376 * be called with identical instance numbers but for 377 * different dev_info_t-s- all but one are bogus. 378 * 379 * Bad Dog! No Biscuit! 380 * 381 * A quick workaround might be to call ddi_soft_state_zalloc 382 * unconditionally, as the implementation fails these calls 383 * if there's an item already allocated. A more reasonable 384 * and longer term change is to move the allocation past 385 * the probe for the device's existence as most of these 386 * 'bogus' calls are for nonexistent devices. 387 */ 388 389 devp = ddi_get_driver_private(dip); 390 devp->sd_dev = dip; 391 392 /* 393 * Determine whether the { i, t, l } we're called 394 * to start is an enclosure services device. 395 */ 396 397 /* 398 * Call the scsi_probe routine to see whether 399 * we actually have an Enclosure Services device at 400 * this address. 401 */ 402 err = scsi_probe(devp, SLEEP_FUNC); 403 if (err != SCSIPROBE_EXISTS) { 404 SES_LOG(NULL, SES_CE_DEBUG9, 405 "ses_doattach: probe error %d", err); 406 scsi_unprobe(devp); 407 return (DDI_FAILURE); 408 } 409 /* Call is_enc_dev() to get the etyp */ 410 if (!(is_enc_dev(NULL, devp->sd_inq, SUN_INQSIZE, &etyp))) { 411 SES_LOG(NULL, CE_WARN, 412 "ses_doattach: ses%d: is_enc_dev failure", inst); 413 scsi_unprobe(devp); 414 return (DDI_FAILURE); 415 } 416 417 if (ddi_soft_state_zalloc(estate, inst) != DDI_SUCCESS) { 418 scsi_unprobe(devp); 419 SES_LOG(NULL, CE_NOTE, "ses%d: softalloc fails", inst); 420 return (DDI_FAILURE); 421 } 422 ssc = ddi_get_soft_state(estate, inst); 423 if (ssc == NULL) { 424 scsi_unprobe(devp); 425 SES_LOG(NULL, CE_NOTE, "ses%d: get_soft_state fails", inst); 426 return (DDI_FAILURE); 427 } 428 devp->sd_private = (opaque_t)ssc; 429 ssc->ses_devp = devp; 430 err = ddi_create_minor_node(dip, "0", S_IFCHR, inst, 431 DDI_NT_SCSI_ENCLOSURE, NULL); 432 if (err == DDI_FAILURE) { 433 ddi_remove_minor_node(dip, NULL); 434 SES_LOG(ssc, CE_NOTE, "minor node creation failed"); 435 ddi_soft_state_free(estate, inst); 436 scsi_unprobe(devp); 437 return (DDI_FAILURE); 438 } 439 440 ssc->ses_type = etyp; 441 ssc->ses_vec = vecs[etyp]; 442 443 /* Call SoftC Init Routine A bit later... */ 444 445 ssc->ses_rqbp = scsi_alloc_consistent_buf(SES_ROUTE(ssc), 446 NULL, SENSE_LENGTH, B_READ, SLEEP_FUNC, NULL); 447 if (ssc->ses_rqbp != NULL) { 448 ssc->ses_rqpkt = scsi_init_pkt(SES_ROUTE(ssc), NULL, 449 ssc->ses_rqbp, CDB_GROUP0, 1, 0, PKT_CONSISTENT, 450 SLEEP_FUNC, NULL); 451 } 452 if (ssc->ses_rqbp == NULL || ssc->ses_rqpkt == NULL) { 453 ddi_remove_minor_node(dip, NULL); 454 SES_LOG(ssc, CE_NOTE, "scsi_init_pkt of rqbuf failed"); 455 if (ssc->ses_rqbp != NULL) { 456 scsi_free_consistent_buf(ssc->ses_rqbp); 457 ssc->ses_rqbp = NULL; 458 } 459 ddi_soft_state_free(estate, inst); 460 scsi_unprobe(devp); 461 return (DDI_FAILURE); 462 } 463 ssc->ses_rqpkt->pkt_private = (opaque_t)ssc; 464 ssc->ses_rqpkt->pkt_address = *(SES_ROUTE(ssc)); 465 ssc->ses_rqpkt->pkt_comp = ses_callback; 466 ssc->ses_rqpkt->pkt_time = ses_io_time; 467 ssc->ses_rqpkt->pkt_flags = FLAG_NOPARITY|FLAG_NODISCON|FLAG_SENSING; 468 ssc->ses_rqpkt->pkt_cdbp[0] = SCMD_REQUEST_SENSE; 469 ssc->ses_rqpkt->pkt_cdbp[1] = 0; 470 ssc->ses_rqpkt->pkt_cdbp[2] = 0; 471 ssc->ses_rqpkt->pkt_cdbp[3] = 0; 472 ssc->ses_rqpkt->pkt_cdbp[4] = SENSE_LENGTH; 473 ssc->ses_rqpkt->pkt_cdbp[5] = 0; 474 475 switch (scsi_ifgetcap(SES_ROUTE(ssc), "auto-rqsense", 1)) { 476 case 1: 477 /* if already set, don't reset it */ 478 ssc->ses_arq = 1; 479 break; 480 case 0: 481 /* try and set it */ 482 ssc->ses_arq = ((scsi_ifsetcap(SES_ROUTE(ssc), 483 "auto-rqsense", 1, 1) == 1) ? 1 : 0); 484 break; 485 default: 486 /* probably undefined, so zero it out */ 487 ssc->ses_arq = 0; 488 break; 489 } 490 491 ssc->ses_sbufp = getrbuf(KM_SLEEP); 492 cv_init(&ssc->ses_sbufcv, NULL, CV_DRIVER, NULL); 493 494 /* 495 * If the HBA supports wide, tell it to use wide. 496 */ 497 if (scsi_ifgetcap(SES_ROUTE(ssc), "wide-xfer", 1) != -1) { 498 int wd = ((devp->sd_inq->inq_rdf == RDF_SCSI2) && 499 (devp->sd_inq->inq_wbus16 || devp->sd_inq->inq_wbus32)) 500 ? 1 : 0; 501 (void) scsi_ifsetcap(SES_ROUTE(ssc), "wide-xfer", wd, 1); 502 } 503 504 /* 505 * Now do ssc init of enclosure specifics. 506 * At the same time, check to make sure getrbuf 507 * actually succeeded. 508 */ 509 if ((*ssc->ses_vec.softc_init)(ssc, 1)) { 510 SES_LOG(ssc, SES_CE_DEBUG3, "failed softc init"); 511 (void) (*ssc->ses_vec.softc_init)(ssc, 0); 512 ddi_remove_minor_node(dip, NULL); 513 scsi_destroy_pkt(ssc->ses_rqpkt); 514 scsi_free_consistent_buf(ssc->ses_rqbp); 515 if (ssc->ses_sbufp) { 516 freerbuf(ssc->ses_sbufp); 517 } 518 cv_destroy(&ssc->ses_sbufcv); 519 ddi_soft_state_free(estate, inst); 520 scsi_unprobe(devp); 521 return (DDI_FAILURE); 522 } 523 524 /* 525 * create this property so that PM code knows we want 526 * to be suspended at PM time 527 */ 528 (void) ddi_prop_update_string(DDI_DEV_T_NONE, dip, 529 PM_HARDWARE_STATE_PROP, PM_NEEDS_SUSPEND_RESUME); 530 531 /* announce the existence of this device */ 532 ddi_report_dev(dip); 533 return (DDI_SUCCESS); 534} 535 536 537/* 538 * Detach ses device. 539 * 540 * XXX: Power management is NOT supported. A token framework 541 * is provided that will need to be extended assuming we have 542 * ses devices we can power down. Currently, we don't have any. 543 */ 544static int 545ses_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 546{ 547 ses_softc_t *ssc; 548 int inst; 549 550 switch (cmd) { 551 case DDI_DETACH: 552 inst = ddi_get_instance(dip); 553 ssc = ddi_get_soft_state(estate, inst); 554 if (ssc == NULL) { 555 cmn_err(CE_NOTE, 556 "ses%d: DDI_DETACH, no softstate found", inst); 557 return (DDI_FAILURE); 558 } 559 if (ISOPEN(ssc)) { 560 return (DDI_FAILURE); 561 } 562 563#if !defined(lint) 564 /* LINTED */ 565 _NOTE(COMPETING_THREADS_NOW); 566#endif /* !defined(lint) */ 567 568 if (ssc->ses_vec.softc_init) 569 (void) (*ssc->ses_vec.softc_init)(ssc, 0); 570 571#if !defined(lint) 572 _NOTE(NO_COMPETING_THREADS_NOW); 573#endif /* !defined(lint) */ 574 575 (void) scsi_ifsetcap(SES_ROUTE(ssc), "auto-rqsense", 1, 0); 576 scsi_destroy_pkt(ssc->ses_rqpkt); 577 scsi_free_consistent_buf(ssc->ses_rqbp); 578 freerbuf(ssc->ses_sbufp); 579 cv_destroy(&ssc->ses_sbufcv); 580 ddi_soft_state_free(estate, inst); 581 ddi_prop_remove_all(dip); 582 ddi_remove_minor_node(dip, NULL); 583 scsi_unprobe(ddi_get_driver_private(dip)); 584 break; 585 586 case DDI_SUSPEND: 587 inst = ddi_get_instance(dip); 588 if ((ssc = ddi_get_soft_state(estate, inst)) == NULL) { 589 cmn_err(CE_NOTE, 590 "ses%d: DDI_SUSPEND, no softstate found", inst); 591 return (DDI_FAILURE); 592 } 593 594 /* 595 * If driver idle, accept suspend request. 596 * If it's busy, reject it. This keeps things simple! 597 */ 598 mutex_enter(SES_MUTEX); 599 if (ssc->ses_sbufbsy) { 600 mutex_exit(SES_MUTEX); 601 return (DDI_FAILURE); 602 } 603 ssc->ses_suspended = 1; 604 mutex_exit(SES_MUTEX); 605 break; 606 607 default: 608 return (DDI_FAILURE); 609 } 610 return (DDI_SUCCESS); 611} 612 613/* ARGSUSED */ 614static int 615ses_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result) 616{ 617 dev_t dev; 618 ses_softc_t *ssc; 619 int inst, error; 620 621 switch (infocmd) { 622 case DDI_INFO_DEVT2DEVINFO: 623 dev = (dev_t)arg; 624 inst = getminor(dev); 625 if ((ssc = ddi_get_soft_state(estate, inst)) == NULL) { 626 return (DDI_FAILURE); 627 } 628 *result = (void *) ssc->ses_devp->sd_dev; 629 error = DDI_SUCCESS; 630 break; 631 case DDI_INFO_DEVT2INSTANCE: 632 dev = (dev_t)arg; 633 inst = getminor(dev); 634 *result = (void *)(uintptr_t)inst; 635 error = DDI_SUCCESS; 636 break; 637 default: 638 error = DDI_FAILURE; 639 } 640 return (error); 641} 642 643/* 644 * Unix Entry Points 645 */ 646 647/* ARGSUSED */ 648static int 649ses_open(dev_t *dev_p, int flag, int otyp, cred_t *cred_p) 650{ 651 ses_softc_t *ssc; 652 653 if ((ssc = ddi_get_soft_state(estate, getminor(*dev_p))) == NULL) { 654 return (ENXIO); 655 } 656 657 /* 658 * If the device is powered down, request it's activation. 659 * If it can't be activated, fail open. 660 */ 661 if (ssc->ses_suspended && 662 ddi_dev_is_needed(SES_DEVINFO(ssc), 0, 1) != DDI_SUCCESS) { 663 return (EIO); 664 } 665 666 mutex_enter(SES_MUTEX); 667 if (otyp == OTYP_LYR) 668 ssc->ses_lyropen++; 669 else 670 ssc->ses_oflag = 1; 671 672 ssc->ses_present = (ssc->ses_present)? ssc->ses_present: SES_OPENING; 673 mutex_exit(SES_MUTEX); 674 return (EOK); 675} 676 677/*ARGSUSED*/ 678static int 679ses_close(dev_t dev, int flag, int otyp, cred_t *cred_p) 680{ 681 ses_softc_t *ssc; 682 if ((ssc = ddi_get_soft_state(estate, getminor(dev))) == NULL) { 683 return (ENXIO); 684 } 685 686 if (ssc->ses_suspended) { 687 (void) ddi_dev_is_needed(SES_DEVINFO(ssc), 0, 1); 688 } 689 690 mutex_enter(SES_MUTEX); 691 if (otyp == OTYP_LYR) 692 ssc->ses_lyropen -= (ssc->ses_lyropen)? 1: 0; 693 else 694 ssc->ses_oflag = 0; 695 mutex_exit(SES_MUTEX); 696 return (0); 697} 698 699 700/*ARGSUSED3*/ 701static int 702ses_ioctl(dev_t dev, int cmd, intptr_t arg, int flg, cred_t *cred_p, int *rvalp) 703{ 704 ses_softc_t *ssc; 705 ses_object k, *up; 706 ses_objarg x; 707 uchar_t t; 708 uchar_t i; 709 int rv = 0; 710 711 if ((ssc = ddi_get_soft_state(estate, getminor(dev))) == NULL || 712 ssc->ses_present == SES_CLOSED) { 713 return (ENXIO); 714 } 715 716 717 switch (cmd) { 718 case SESIOC_GETNOBJ: 719 if (ddi_copyout(&ssc->ses_nobjects, (void *)arg, 720 sizeof (int), flg)) { 721 rv = EFAULT; 722 break; 723 } 724 break; 725 726 case SESIOC_GETOBJMAP: 727 up = (ses_object *) arg; 728 mutex_enter(SES_MUTEX); 729 for (i = 0; i != ssc->ses_nobjects; i++) { 730 k.obj_id = i; 731 k.subencid = ssc->ses_objmap[i].subenclosure; 732 k.elem_type = ssc->ses_objmap[i].enctype; 733 if (ddi_copyout(&k, up, sizeof (k), flg)) { 734 rv = EFAULT; 735 break; 736 } 737 up++; 738 } 739 mutex_exit(SES_MUTEX); 740 break; 741 742 case SESIOC_INIT: 743 rv = (*ssc->ses_vec.init_enc)(ssc); 744 break; 745 746 case SESIOC_GETENCSTAT: 747 if ((ssc->ses_encstat & ENCI_SVALID) == 0) { 748 rv = (*ssc->ses_vec.get_encstat)(ssc, KM_SLEEP); 749 if (rv) { 750 break; 751 } 752 } 753 t = ssc->ses_encstat & 0xf; 754 if (ddi_copyout(&t, (void *)arg, sizeof (t), flg)) 755 rv = EFAULT; 756 /* 757 * And always invalidate enclosure status on the way out. 758 */ 759 mutex_enter(SES_MUTEX); 760 ssc->ses_encstat &= ~ENCI_SVALID; 761 mutex_exit(SES_MUTEX); 762 break; 763 764 case SESIOC_SETENCSTAT: 765 if (ddi_copyin((void *)arg, &t, sizeof (t), flg)) 766 rv = EFAULT; 767 else 768 rv = (*ssc->ses_vec.set_encstat)(ssc, t, KM_SLEEP); 769 mutex_enter(SES_MUTEX); 770 ssc->ses_encstat &= ~ENCI_SVALID; 771 mutex_exit(SES_MUTEX); 772 break; 773 774 case SESIOC_GETOBJSTAT: 775 if (ddi_copyin((void *)arg, &x, sizeof (x), flg)) { 776 rv = EFAULT; 777 break; 778 } 779 if (x.obj_id >= ssc->ses_nobjects) { 780 rv = EINVAL; 781 break; 782 } 783 if ((rv = (*ssc->ses_vec.get_objstat)(ssc, &x, KM_SLEEP)) != 0) 784 break; 785 if (ddi_copyout(&x, (void *)arg, sizeof (x), flg)) 786 rv = EFAULT; 787 else { 788 /* 789 * Now that we no longer poll, svalid never stays true. 790 */ 791 mutex_enter(SES_MUTEX); 792 ssc->ses_objmap[x.obj_id].svalid = 0; 793 mutex_exit(SES_MUTEX); 794 } 795 break; 796 797 case SESIOC_SETOBJSTAT: 798 if (ddi_copyin((void *)arg, &x, sizeof (x), flg)) { 799 rv = EFAULT; 800 break; 801 } 802 if (x.obj_id >= ssc->ses_nobjects) { 803 rv = EINVAL; 804 break; 805 } 806 rv = (*ssc->ses_vec.set_objstat)(ssc, &x, KM_SLEEP); 807 if (rv == 0) { 808 mutex_enter(SES_MUTEX); 809 ssc->ses_objmap[x.obj_id].svalid = 0; 810 mutex_exit(SES_MUTEX); 811 } 812 break; 813 814 case USCSICMD: 815 rv = ses_uscsi_cmd(ssc, (Uscmd *)arg, flg); 816 break; 817 818 default: 819 rv = ENOTTY; 820 break; 821 } 822 return (rv); 823} 824 825 826/* 827 * Loop on running a kernel based command 828 * 829 * FIXME: This routine is not really needed. 830 */ 831int 832ses_runcmd(ses_softc_t *ssc, Uscmd *lp) 833{ 834 int e; 835 836 lp->uscsi_status = 0; 837 e = ses_uscsi_cmd(ssc, lp, FKIOCTL); 838 839#ifdef not 840 /* 841 * Debug: Nice cross-check code for verifying consistent status. 842 */ 843 if (lp->uscsi_status) { 844 if (lp->uscsi_status == STATUS_CHECK) { 845 SES_LOG(ssc, CE_NOTE, "runcmd<cdb[0]=" 846 "0x%x->%s ASC/ASCQ=0x%x/0x%x>", 847 lp->uscsi_cdb[0], 848 scsi_sname(lp->uscsi_rqbuf[2] & 0xf), 849 lp->uscsi_rqbuf[12] & 0xff, 850 lp->uscsi_rqbuf[13] & 0xff); 851 } else { 852 SES_LOG(ssc, CE_NOTE, "runcmd<cdb[0]=" 853 "0x%x -> Status 0x%x", lp->uscsi_cdb[0], 854 lp->uscsi_status); 855 } 856 } 857#endif /* not */ 858 return (e); 859} 860 861 862/* 863 * Run a scsi command. 864 */ 865int 866ses_uscsi_cmd(ses_softc_t *ssc, Uscmd *Uc, int Uf) 867{ 868 Uscmd *uscmd; 869 struct buf *bp; 870 enum uio_seg uioseg; 871 int err; 872 873 /* 874 * Grab local 'special' buffer 875 */ 876 mutex_enter(SES_MUTEX); 877 while (ssc->ses_sbufbsy) { 878 cv_wait(&ssc->ses_sbufcv, &ssc->ses_devp->sd_mutex); 879 } 880 ssc->ses_sbufbsy = 1; 881 mutex_exit(SES_MUTEX); 882 883 /* 884 * If the device is powered down, request it's activation. 885 * This check must be done after setting ses_sbufbsy! 886 */ 887 if (ssc->ses_suspended && 888 ddi_dev_is_needed(SES_DEVINFO(ssc), 0, 1) != DDI_SUCCESS) { 889 mutex_enter(SES_MUTEX); 890 ssc->ses_sbufbsy = 0; 891 mutex_exit(SES_MUTEX); 892 return (EIO); 893 } 894 895 err = scsi_uscsi_alloc_and_copyin((intptr_t)Uc, Uf, 896 SES_ROUTE(ssc), &uscmd); 897 if (err != 0) { 898 SES_LOG(ssc, SES_CE_DEBUG1, "ses_uscsi_cmd: " 899 "scsi_uscsi_alloc_and_copyin failed\n"); 900 mutex_enter(SES_MUTEX); 901 ssc->ses_sbufbsy = 0; 902 cv_signal(&ssc->ses_sbufcv); 903 mutex_exit(SES_MUTEX); 904 SES_LOG(ssc, SES_CE_DEBUG2, efl, __LINE__); 905 return (err); 906 } 907 908 /* 909 * Copy the uscsi command related infos to ssc for use in ses_start() 910 * and ses_callback(). 911 */ 912 bcopy(uscmd, &ssc->ses_uscsicmd, sizeof (Uscmd)); 913 if (uscmd->uscsi_cdb != NULL) { 914 bcopy(uscmd->uscsi_cdb, &ssc->ses_srqcdb, 915 (size_t)(uscmd->uscsi_cdblen)); 916 } 917 ssc->ses_uscsicmd.uscsi_status = 0; 918 919 bp = ssc->ses_sbufp; 920 bp->av_back = (struct buf *)NULL; 921 bp->av_forw = (struct buf *)NULL; 922 bp->b_back = (struct buf *)ssc; 923 bp->b_edev = NODEV; 924 925 if (uscmd->uscsi_cdb != NULL) { 926 if (uscmd->uscsi_cdblen == CDB_GROUP0) { 927 SES_LOG(ssc, SES_CE_DEBUG7, 928 "scsi_cmd: %x %x %x %x %x %x", 929 ((char *)uscmd->uscsi_cdb)[0], 930 ((char *)uscmd->uscsi_cdb)[1], 931 ((char *)uscmd->uscsi_cdb)[2], 932 ((char *)uscmd->uscsi_cdb)[3], 933 ((char *)uscmd->uscsi_cdb)[4], 934 ((char *)uscmd->uscsi_cdb)[5]); 935 } else { 936 SES_LOG(ssc, SES_CE_DEBUG7, 937 "scsi cmd: %x %x %x %x %x %x %x %x %x %x", 938 ((char *)uscmd->uscsi_cdb)[0], 939 ((char *)uscmd->uscsi_cdb)[1], 940 ((char *)uscmd->uscsi_cdb)[2], 941 ((char *)uscmd->uscsi_cdb)[3], 942 ((char *)uscmd->uscsi_cdb)[4], 943 ((char *)uscmd->uscsi_cdb)[5], 944 ((char *)uscmd->uscsi_cdb)[6], 945 ((char *)uscmd->uscsi_cdb)[7], 946 ((char *)uscmd->uscsi_cdb)[8], 947 ((char *)uscmd->uscsi_cdb)[9]); 948 } 949 } 950 951 uioseg = (Uf & FKIOCTL) ? UIO_SYSSPACE : UIO_USERSPACE; 952 err = scsi_uscsi_handle_cmd(NODEV, uioseg, uscmd, 953 ses_start, bp, NULL); 954 955 /* 956 * ses_callback() may set values for ssc->ses_uscsicmd or 957 * ssc->ses_srqsbuf, so copy them back to uscmd. 958 */ 959 if (uscmd->uscsi_rqbuf != NULL) { 960 bcopy(&ssc->ses_srqsbuf, uscmd->uscsi_rqbuf, 961 (size_t)(uscmd->uscsi_rqlen)); 962 uscmd->uscsi_rqresid = ssc->ses_uscsicmd.uscsi_rqresid; 963 } 964 uscmd->uscsi_status = ssc->ses_uscsicmd.uscsi_status; 965 966 (void) scsi_uscsi_copyout_and_free((intptr_t)Uc, uscmd); 967 mutex_enter(SES_MUTEX); 968 ssc->ses_sbufbsy = 0; 969 cv_signal(&ssc->ses_sbufcv); 970 mutex_exit(SES_MUTEX); 971 972 return (err); 973} 974 975 976 977/* 978 * Command start and done functions. 979 */ 980static int 981ses_start(struct buf *bp) 982{ 983 ses_softc_t *ssc = (ses_softc_t *)bp->b_back; 984 985 SES_LOG(ssc, SES_CE_DEBUG9, "ses_start"); 986 if (!BP_PKT(bp)) { 987 /* 988 * Allocate a packet. 989 */ 990 ses_get_pkt(bp, SLEEP_FUNC); 991 if (!BP_PKT(bp)) { 992 int err; 993 bp->b_resid = bp->b_bcount; 994 if (geterror(bp) == 0) 995 SET_BP_ERROR(bp, EIO); 996 err = geterror(bp); 997 biodone(bp); 998 return (err); 999 } 1000 } 1001 1002 /* 1003 * Initialize the transfer residue, error code, and retry count. 1004 */ 1005 bp->b_resid = 0; 1006 SET_BP_ERROR(bp, 0); 1007 1008#if !defined(lint) 1009 _NOTE(NO_COMPETING_THREADS_NOW); 1010#endif /* !defined(lint) */ 1011 ssc->ses_retries = ses_retry_count; 1012 1013#if !defined(lint) 1014 /* LINTED */ 1015 _NOTE(COMPETING_THREADS_NOW); 1016#endif /* !defined(lint) */ 1017 1018 SES_LOG(ssc, SES_CE_DEBUG9, "ses_start -> scsi_transport"); 1019 switch (scsi_transport(BP_PKT(bp))) { 1020 case TRAN_ACCEPT: 1021 return (0); 1022 /* break; */ 1023 1024 case TRAN_BUSY: 1025 SES_LOG(ssc, SES_CE_DEBUG2, 1026 "ses_start: TRANSPORT BUSY"); 1027 SES_ENABLE_RESTART(SES_RESTART_TIME, BP_PKT(bp)); 1028 return (0); 1029 /* break; */ 1030 1031 default: 1032 SES_LOG(ssc, SES_CE_DEBUG2, "TRANSPORT ERROR\n"); 1033 SET_BP_ERROR(bp, EIO); 1034 scsi_destroy_pkt(BP_PKT(bp)); 1035 SET_BP_PKT(bp, NULL); 1036 biodone(bp); 1037 return (EIO); 1038 /* break; */ 1039 } 1040} 1041 1042 1043static void 1044ses_get_pkt(struct buf *bp, int (*func)()) 1045{ 1046 ses_softc_t *ssc = (ses_softc_t *)bp->b_back; 1047 Uscmd *scmd = &ssc->ses_uscsicmd; 1048 struct scsi_pkt *pkt; 1049 int stat_size; 1050 1051 if ((scmd->uscsi_flags & USCSI_RQENABLE) && ssc->ses_arq) { 1052 stat_size = sizeof (struct scsi_arq_status); 1053 } else { 1054 stat_size = 1; 1055 } 1056 1057 if (bp->b_bcount) { 1058 pkt = scsi_init_pkt(SES_ROUTE(ssc), NULL, bp, 1059 scmd->uscsi_cdblen, stat_size, 0, 0, func, (caddr_t)ssc); 1060 } else { 1061 pkt = scsi_init_pkt(SES_ROUTE(ssc), NULL, NULL, 1062 scmd->uscsi_cdblen, stat_size, 0, 0, func, (caddr_t)ssc); 1063 } 1064 SET_BP_PKT(bp, pkt); 1065 if (pkt == (struct scsi_pkt *)NULL) 1066 return; 1067 bcopy(scmd->uscsi_cdb, pkt->pkt_cdbp, (size_t)scmd->uscsi_cdblen); 1068 pkt->pkt_time = scmd->uscsi_timeout; 1069 1070 pkt->pkt_comp = ses_callback; 1071 pkt->pkt_private = (opaque_t)ssc; 1072} 1073 1074 1075/* 1076 * Restart ses command. 1077 */ 1078static void 1079ses_restart(void *arg) 1080{ 1081 struct scsi_pkt *pkt = (struct scsi_pkt *)arg; 1082 ses_softc_t *ssc = (ses_softc_t *)pkt->pkt_private; 1083 struct buf *bp = ssc->ses_sbufp; 1084 SES_LOG(ssc, SES_CE_DEBUG9, "ses_restart"); 1085 1086 ssc->ses_restart_id = NULL; 1087 1088 switch (scsi_transport(pkt)) { 1089 case TRAN_ACCEPT: 1090 SES_LOG(ssc, SES_CE_DEBUG9, 1091 "RESTART %d ok", ssc->ses_retries); 1092 return; 1093 /* break; */ 1094 case TRAN_BUSY: 1095 SES_LOG(ssc, SES_CE_DEBUG1, 1096 "RESTART %d TRANSPORT BUSY\n", ssc->ses_retries); 1097 if (ssc->ses_retries > SES_NO_RETRY) { 1098 ssc->ses_retries -= SES_BUSY_RETRY; 1099 SES_ENABLE_RESTART(SES_RESTART_TIME, pkt); 1100 return; 1101 } 1102 SET_BP_ERROR(bp, EBUSY); 1103 break; 1104 default: 1105 SET_BP_ERROR(bp, EIO); 1106 break; 1107 } 1108 SES_LOG(ssc, SES_CE_DEBUG1, 1109 "RESTART %d TRANSPORT FAILED\n", ssc->ses_retries); 1110 1111 pkt = (struct scsi_pkt *)bp->av_back; 1112 scsi_destroy_pkt(pkt); 1113 bp->b_resid = bp->b_bcount; 1114 SET_BP_PKT(bp, NULL); 1115 biodone(bp); 1116} 1117 1118 1119/* 1120 * Command completion processing 1121 */ 1122#define HBA_RESET (STAT_BUS_RESET|STAT_DEV_RESET|STAT_ABORTED) 1123static void 1124ses_callback(struct scsi_pkt *pkt) 1125{ 1126 ses_softc_t *ssc = (ses_softc_t *)pkt->pkt_private; 1127 struct buf *bp; 1128 Uscmd *scmd; 1129 int err; 1130 char action; 1131 1132 bp = ssc->ses_sbufp; 1133 scmd = &ssc->ses_uscsicmd; 1134 /* SES_LOG(ssc, SES_CE_DEBUG9, "ses_callback"); */ 1135 1136 /* 1137 * Optimization: Normal completion. 1138 */ 1139 if (pkt->pkt_reason == CMD_CMPLT && 1140 !SCBP_C(pkt) && 1141 !(pkt->pkt_flags & FLAG_SENSING) && 1142 !pkt->pkt_resid && 1143 !(scmd->uscsi_flags & USCSI_READ)) { 1144 scsi_destroy_pkt(pkt); 1145 SET_BP_PKT(bp, NULL); 1146 biodone(bp); 1147 return; 1148 } 1149 1150 1151 /* 1152 * Abnormal completion. 1153 * 1154 * Assume most common error initially. 1155 */ 1156 err = EIO; 1157 action = COMMAND_DONE; 1158 if (scmd->uscsi_flags & USCSI_DIAGNOSE) { 1159 ssc->ses_retries = SES_NO_RETRY; 1160 } 1161 1162CHECK_PKT: 1163 if (pkt->pkt_reason != CMD_CMPLT) { 1164 /* Process transport errors. */ 1165 switch (pkt->pkt_reason) { 1166 case CMD_TIMEOUT: 1167 /* 1168 * If the transport layer didn't clear the problem, 1169 * reset the target. 1170 */ 1171 if (! (pkt->pkt_statistics & HBA_RESET)) { 1172 (void) scsi_reset(&pkt->pkt_address, 1173 RESET_TARGET); 1174 } 1175 err = ETIMEDOUT; 1176 break; 1177 1178 case CMD_INCOMPLETE: 1179 case CMD_UNX_BUS_FREE: 1180 /* 1181 * No response? If probing, give up. 1182 * Otherwise, keep trying until retries exhausted. 1183 * Then lockdown the driver as the device is 1184 * unplugged. 1185 */ 1186 if (ssc->ses_retries <= SES_NO_RETRY && 1187 !(scmd->uscsi_flags & USCSI_DIAGNOSE)) { 1188 ssc->ses_present = SES_CLOSED; 1189 } 1190 /* Inhibit retries to speed probe/attach. */ 1191 if (ssc->ses_present < SES_OPEN) { 1192 ssc->ses_retries = SES_NO_RETRY; 1193 } 1194 /* SES_CMD_RETRY4(ssc->ses_retries); */ 1195 err = ENXIO; 1196 break; 1197 1198 case CMD_DATA_OVR: 1199 /* 1200 * XXX: Some HBA's (e.g. Adaptec 1740 and 1201 * earlier ISP revs) report a DATA OVERRUN 1202 * error instead of a transfer residue. So, 1203 * we convert the error and restart. 1204 */ 1205 if ((bp->b_bcount - pkt->pkt_resid) > 0) { 1206 SES_LOG(ssc, SES_CE_DEBUG6, 1207 "ignoring overrun"); 1208 pkt->pkt_reason = CMD_CMPLT; 1209 err = EOK; 1210 goto CHECK_PKT; 1211 } 1212 ssc->ses_retries = SES_NO_RETRY; 1213 /* err = EIO; */ 1214 break; 1215 1216 case CMD_DMA_DERR: 1217 ssc->ses_retries = SES_NO_RETRY; 1218 err = EFAULT; 1219 break; 1220 1221 default: 1222 /* err = EIO; */ 1223 break; 1224 } 1225 if (pkt == ssc->ses_rqpkt) { 1226 SES_LOG(ssc, CE_WARN, fail_msg, 1227 "Request Sense ", 1228 scsi_rname(pkt->pkt_reason), 1229 (ssc->ses_retries > 0)? 1230 "retrying": "giving up"); 1231 pkt = (struct scsi_pkt *)bp->av_back; 1232 action = QUE_SENSE; 1233 } else { 1234 SES_LOG(ssc, CE_WARN, fail_msg, 1235 "", scsi_rname(pkt->pkt_reason), 1236 (ssc->ses_retries > 0)? 1237 "retrying": "giving up"); 1238 action = QUE_COMMAND; 1239 } 1240 /* Device exists, allow full error recovery. */ 1241 if (ssc->ses_retries > SES_NO_RETRY) { 1242 ssc->ses_present = SES_OPEN; 1243 } 1244 1245 1246 /* 1247 * Process status and sense data errors. 1248 */ 1249 } else { 1250 ssc->ses_present = SES_OPEN; 1251 action = ses_decode_sense(pkt, &err); 1252 } 1253 1254 1255 /* 1256 * Initiate error recovery action, as needed. 1257 */ 1258 switch (action) { 1259 case QUE_COMMAND_NOW: 1260 /* SES_LOG(ssc, SES_CE_DEBUG1, "retrying cmd now"); */ 1261 if (ssc->ses_retries > SES_NO_RETRY) { 1262 ssc->ses_retries -= SES_CMD_RETRY; 1263 scmd->uscsi_status = 0; 1264 if (ssc->ses_arq) 1265 bzero(pkt->pkt_scbp, 1266 sizeof (struct scsi_arq_status)); 1267 1268 if (scsi_transport((struct scsi_pkt *)bp->av_back) 1269 != TRAN_ACCEPT) { 1270 SES_ENABLE_RESTART(SES_RESTART_TIME, 1271 (struct scsi_pkt *)bp->av_back); 1272 } 1273 return; 1274 } 1275 break; 1276 1277 case QUE_COMMAND: 1278 SES_LOG(ssc, SES_CE_DEBUG1, "retrying cmd"); 1279 if (ssc->ses_retries > SES_NO_RETRY) { 1280 ssc->ses_retries -= 1281 (err == EBUSY)? SES_BUSY_RETRY: SES_CMD_RETRY; 1282 scmd->uscsi_status = 0; 1283 if (ssc->ses_arq) 1284 bzero(pkt->pkt_scbp, 1285 sizeof (struct scsi_arq_status)); 1286 1287 SES_ENABLE_RESTART( 1288 (err == EBUSY)? SES_BUSY_TIME: SES_RESTART_TIME, 1289 (struct scsi_pkt *)bp->av_back); 1290 return; 1291 } 1292 break; 1293 1294 case QUE_SENSE: 1295 SES_LOG(ssc, SES_CE_DEBUG1, "retrying sense"); 1296 if (ssc->ses_retries > SES_NO_RETRY) { 1297 ssc->ses_retries -= SES_SENSE_RETRY; 1298 scmd->uscsi_status = 0; 1299 bzero(&ssc->ses_srqsbuf, 1300 sizeof (struct scsi_extended_sense)); 1301 1302 if (scsi_transport(ssc->ses_rqpkt) != TRAN_ACCEPT) { 1303 SES_ENABLE_RESTART(SES_RESTART_TIME, 1304 ssc->ses_rqpkt); 1305 } 1306 return; 1307 } 1308 break; 1309 1310 case COMMAND_DONE: 1311 SES_LOG(ssc, SES_CE_DEBUG4, "cmd done"); 1312 pkt = (struct scsi_pkt *)bp->av_back; 1313 bp->b_resid = pkt->pkt_resid; 1314 if (bp->b_resid) { 1315 SES_LOG(ssc, SES_CE_DEBUG6, 1316 "transfer residue %ld(%ld)", 1317 bp->b_bcount - bp->b_resid, bp->b_bcount); 1318 } 1319 break; 1320 } 1321 pkt = (struct scsi_pkt *)bp->av_back; 1322 if (err) { 1323 SES_LOG(ssc, SES_CE_DEBUG1, "SES: ERROR %d\n", err); 1324 SET_BP_ERROR(bp, err); 1325 bp->b_resid = bp->b_bcount; 1326 } 1327 scsi_destroy_pkt(pkt); 1328 SET_BP_PKT(bp, NULL); 1329 biodone(bp); 1330} 1331 1332 1333/* 1334 * Check status and sense data and determine recovery. 1335 */ 1336static int 1337ses_decode_sense(struct scsi_pkt *pkt, int *err) 1338{ 1339 ses_softc_t *ssc = (ses_softc_t *)pkt->pkt_private; 1340 struct scsi_extended_sense *sense = 1341 (struct scsi_extended_sense *)&ssc->ses_srqsbuf; 1342 Uscmd *scmd = &ssc->ses_uscsicmd; 1343 char sense_flag = 0; 1344 uchar_t status = SCBP_C(pkt) & STATUS_MASK; 1345 char *err_action; 1346 char action; 1347 1348 /* 1349 * Process manual request sense. 1350 * Copy manual request sense to sense buffer. 1351 * 1352 * This is done if auto request sense is not enabled. 1353 * Or the auto request sense failed and the request 1354 * sense needs to be retried. 1355 */ 1356 if (pkt->pkt_flags & FLAG_SENSING) { 1357 struct buf *sbp = ssc->ses_rqbp; 1358 int amt = min(SENSE_LENGTH, 1359 sbp->b_bcount - sbp->b_resid); 1360 1361 bcopy(sbp->b_un.b_addr, sense, amt); 1362 scmd->uscsi_rqresid = scmd->uscsi_rqlen - amt; 1363 sense_flag = 1; 1364 1365 /* 1366 * Process auto request sense. 1367 * Copy auto request sense to sense buffer. 1368 * 1369 * If auto request sense failed due to transport error, 1370 * retry the command. Otherwise process the status and 1371 * sense data. 1372 */ 1373 } else if (ssc->ses_arq && pkt->pkt_state & STATE_ARQ_DONE) { 1374 struct scsi_arq_status *arq = 1375 (struct scsi_arq_status *)(pkt->pkt_scbp); 1376 int amt = min(sizeof (arq->sts_sensedata), SENSE_LENGTH); 1377 uchar_t *arq_status = (uchar_t *)&arq->sts_rqpkt_status; 1378 1379 if (arq->sts_rqpkt_reason != CMD_CMPLT) { 1380 return (QUE_COMMAND); 1381 } 1382 bcopy(&arq->sts_sensedata, sense, amt); 1383 scmd->uscsi_status = status; 1384 scmd->uscsi_rqresid = scmd->uscsi_rqlen - amt; 1385 status = *arq_status & STATUS_MASK; 1386 pkt->pkt_state &= ~STATE_ARQ_DONE; 1387 sense_flag = 1; 1388 } 1389 1390 1391 /* 1392 * Check status of REQUEST SENSE or command. 1393 * 1394 * If it's not successful, try retrying the original command 1395 * and hope that it goes away. If not, we'll eventually run 1396 * out of retries and die. 1397 */ 1398 switch (status) { 1399 case STATUS_GOOD: 1400 case STATUS_INTERMEDIATE: 1401 case STATUS_MET: 1402 /* 1403 * If the command status is ok, we're done. 1404 * Otherwise, examine the request sense data. 1405 */ 1406 if (! sense_flag) { 1407 *err = EOK; 1408 return (COMMAND_DONE); 1409 } 1410 break; 1411 1412 case STATUS_CHECK: 1413 SES_LOG(ssc, SES_CE_DEBUG3, "status decode: check"); 1414 *err = EIO; 1415 return (QUE_SENSE); 1416 /* break; */ 1417 1418 case STATUS_BUSY: 1419 SES_LOG(ssc, SES_CE_DEBUG1, "status decode: busy"); 1420 /* SES_CMD_RETRY2(ssc->ses_retries); */ 1421 *err = EBUSY; 1422 return (QUE_COMMAND); 1423 /* break; */ 1424 1425 case STATUS_RESERVATION_CONFLICT: 1426 SES_LOG(ssc, SES_CE_DEBUG1, "status decode: reserved"); 1427 *err = EACCES; 1428 return (COMMAND_DONE_ERROR); 1429 /* break; */ 1430 1431 case STATUS_TERMINATED: 1432 SES_LOG(ssc, SES_CE_DEBUG1, "status decode: terminated"); 1433 *err = ECANCELED; 1434 return (COMMAND_DONE_ERROR); 1435 /* break; */ 1436 1437 default: 1438 SES_LOG(ssc, SES_CE_DEBUG1, "status 0x%x", status); 1439 *err = EIO; 1440 return (QUE_COMMAND); 1441 /* break; */ 1442 } 1443 1444 1445 /* 1446 * Check REQUEST SENSE error code. 1447 * 1448 * Either there's no error, a retryable error, 1449 * or it's dead. SES devices aren't very complex. 1450 */ 1451 err_action = "retrying"; 1452 switch (sense->es_key) { 1453 case KEY_RECOVERABLE_ERROR: 1454 *err = EOK; 1455 err_action = "recovered"; 1456 action = COMMAND_DONE; 1457 break; 1458 1459 case KEY_UNIT_ATTENTION: 1460 /* 1461 * This is common for RAID! 1462 */ 1463 /* *err = EIO; */ 1464 SES_CMD_RETRY1(ssc->ses_retries); 1465 action = QUE_COMMAND_NOW; 1466 break; 1467 1468 case KEY_NOT_READY: 1469 case KEY_NO_SENSE: 1470 /* *err = EIO; */ 1471 action = QUE_COMMAND; 1472 break; 1473 1474 default: 1475 /* *err = EIO; */ 1476 err_action = "fatal"; 1477 action = COMMAND_DONE_ERROR; 1478 break; 1479 } 1480 SES_LOG(ssc, SES_CE_DEBUG1, 1481 "cdb[0]= 0x%x %s, key=0x%x, ASC/ASCQ=0x%x/0x%x", 1482 scmd->uscsi_cdb[0], err_action, 1483 sense->es_key, sense->es_add_code, sense->es_qual_code); 1484 1485#ifdef not 1486 /* 1487 * Dump cdb and sense data stat's for manufacturing. 1488 */ 1489 if (DEBUGGING_ERR || sd_error_level == SDERR_ALL) { 1490 auto buf[128]; 1491 1492 p = pkt->pkt_cdbp; 1493 if ((j = scsi_cdb_size[CDB_GROUPID(*p)]) == 0) 1494 j = CDB_SIZE; 1495 1496 /* Print cdb */ 1497 (void) sprintf(buf, "cmd:"); 1498 for (i = 0; i < j; i++) { 1499 (void) sprintf(&buf[strlen(buf)], 1500 hex, (uchar_t)*p++); 1501 } 1502 SES_LOG(ssc, SES_CE_DEBUG3, "%s", buf); 1503 1504 /* Suppress trailing zero's in sense data */ 1505 if (amt > 3) { 1506 p = (char *)devp->sd_sense + amt; 1507 for (j = amt; j > 3; j--) { 1508 if (*(--p)) break; 1509 } 1510 } else { 1511 j = amt; 1512 } 1513 1514 /* Print sense data. */ 1515 (void) sprintf(buf, "sense:"); 1516 p = (char *)devp->sd_sense; 1517 for (i = 0; i < j; i++) { 1518 (void) sprintf(&buf[strlen(buf)], 1519 hex, (uchar_t)*p++); 1520 } 1521 SES_LOG(ssc, SES_CE_DEBUG3, "%s", buf); 1522 } 1523#endif /* not */ 1524 return (action); 1525} 1526 1527 1528/*PRINTFLIKE3*/ 1529void 1530ses_log(ses_softc_t *ssc, int level, const char *fmt, ...) 1531{ 1532 va_list ap; 1533 char buf[256]; 1534 1535 va_start(ap, fmt); 1536 (void) vsprintf(buf, fmt, ap); 1537 va_end(ap); 1538 1539 if (ssc == (ses_softc_t *)NULL) { 1540 switch (level) { 1541 case SES_CE_DEBUG1: 1542 if (ses_debug > 1) 1543 cmn_err(CE_NOTE, "%s", buf); 1544 break; 1545 case SES_CE_DEBUG2: 1546 if (ses_debug > 2) 1547 cmn_err(CE_NOTE, "%s", buf); 1548 break; 1549 case SES_CE_DEBUG3: 1550 if (ses_debug > 3) 1551 cmn_err(CE_NOTE, "%s", buf); 1552 break; 1553 case SES_CE_DEBUG4: 1554 if (ses_debug > 4) 1555 cmn_err(CE_NOTE, "%s", buf); 1556 break; 1557 case SES_CE_DEBUG5: 1558 if (ses_debug > 5) 1559 cmn_err(CE_NOTE, "%s", buf); 1560 break; 1561 case SES_CE_DEBUG6: 1562 if (ses_debug > 6) 1563 cmn_err(CE_NOTE, "%s", buf); 1564 break; 1565 case SES_CE_DEBUG7: 1566 if (ses_debug > 7) 1567 cmn_err(CE_NOTE, "%s", buf); 1568 break; 1569 case SES_CE_DEBUG8: 1570 if (ses_debug > 8) 1571 cmn_err(CE_NOTE, "%s", buf); 1572 break; 1573 case SES_CE_DEBUG9: 1574 if (ses_debug > 9) 1575 cmn_err(CE_NOTE, "%s", buf); 1576 break; 1577 case CE_NOTE: 1578 case CE_WARN: 1579 case CE_PANIC: 1580 cmn_err(level, "%s", buf); 1581 break; 1582 case SES_CE_DEBUG: 1583 default: 1584 cmn_err(CE_NOTE, "%s", buf); 1585 break; 1586 } 1587 return; 1588 } 1589 1590 switch (level) { 1591 case CE_CONT: 1592 case CE_NOTE: 1593 case CE_WARN: 1594 case CE_PANIC: 1595 scsi_log(SES_DEVINFO(ssc), (char *)Snm, level, Str, buf); 1596 break; 1597 case SES_CE_DEBUG1: 1598 if (ses_debug > 1) 1599 scsi_log(SES_DEVINFO(ssc), (char *)Snm, SCSI_DEBUG, 1600 Str, buf); 1601 break; 1602 case SES_CE_DEBUG2: 1603 if (ses_debug > 2) 1604 scsi_log(SES_DEVINFO(ssc), (char *)Snm, SCSI_DEBUG, 1605 Str, buf); 1606 break; 1607 case SES_CE_DEBUG3: 1608 if (ses_debug > 3) 1609 scsi_log(SES_DEVINFO(ssc), (char *)Snm, SCSI_DEBUG, 1610 Str, buf); 1611 break; 1612 case SES_CE_DEBUG4: 1613 if (ses_debug > 4) 1614 scsi_log(SES_DEVINFO(ssc), (char *)Snm, SCSI_DEBUG, 1615 Str, buf); 1616 break; 1617 case SES_CE_DEBUG5: 1618 if (ses_debug > 5) 1619 scsi_log(SES_DEVINFO(ssc), (char *)Snm, SCSI_DEBUG, 1620 Str, buf); 1621 break; 1622 case SES_CE_DEBUG6: 1623 if (ses_debug > 6) 1624 scsi_log(SES_DEVINFO(ssc), (char *)Snm, SCSI_DEBUG, 1625 Str, buf); 1626 break; 1627 case SES_CE_DEBUG7: 1628 if (ses_debug > 7) 1629 scsi_log(SES_DEVINFO(ssc), (char *)Snm, SCSI_DEBUG, 1630 Str, buf); 1631 break; 1632 case SES_CE_DEBUG8: 1633 if (ses_debug > 8) 1634 scsi_log(SES_DEVINFO(ssc), (char *)Snm, SCSI_DEBUG, 1635 Str, buf); 1636 break; 1637 case SES_CE_DEBUG9: 1638 if (ses_debug > 9) 1639 scsi_log(SES_DEVINFO(ssc), (char *)Snm, SCSI_DEBUG, 1640 Str, buf); 1641 break; 1642 case SES_CE_DEBUG: 1643 default: 1644 scsi_log(SES_DEVINFO(ssc), (char *)Snm, SCSI_DEBUG, Str, buf); 1645 break; 1646 } 1647} 1648/* 1649 * mode: c 1650 * Local variables: 1651 * c-indent-level: 8 1652 * c-brace-imaginary-offset: 0 1653 * c-brace-offset: -8 1654 * c-argdecl-indent: 8 1655 * c-label-offset: -8 1656 * c-continued-statement-offset: 8 1657 * c-continued-brace-offset: 0 1658 * End: 1659 */ 1660