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 * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26 #pragma ident "%Z%%M% %I% %E% SMI"
27
28 #include <assert.h>
29 #include <errno.h>
30 #include <libdiskstatus.h>
31 #include <limits.h>
32 #include <stdlib.h>
33 #include <strings.h>
34 #include <sys/fm/io/scsi.h>
35
36 #include "ds_scsi.h"
37 #include "ds_scsi_sim.h"
38 #include "ds_scsi_uscsi.h"
39
40 typedef struct ds_scsi_info {
41 disk_status_t *si_dsp;
42 void *si_sim;
43 int si_cdblen;
44 int si_supp_mode;
45 int si_supp_log;
46 int si_extensions;
47 int si_reftemp;
48 scsi_ms_hdrs_t si_hdrs;
49 scsi_ie_page_t si_iec_current;
50 scsi_ie_page_t si_iec_changeable;
51 nvlist_t *si_state_modepage;
52 nvlist_t *si_state_logpage;
53 nvlist_t *si_state_iec;
54 } ds_scsi_info_t;
55
56 #define scsi_set_errno(sip, errno) (ds_set_errno((sip)->si_dsp, (errno)))
57
58 /*
59 * Table to validate log pages
60 */
61 typedef int (*logpage_validation_fn_t)(ds_scsi_info_t *,
62 scsi_log_parameter_header_t *, int, nvlist_t *);
63 typedef int (*logpage_analyze_fn_t)(ds_scsi_info_t *,
64 scsi_log_parameter_header_t *, int);
65
66 typedef struct logpage_validation_entry {
67 uchar_t ve_code;
68 int ve_supported;
69 const char *ve_desc;
70 logpage_validation_fn_t ve_validate;
71 logpage_analyze_fn_t ve_analyze;
72 } logpage_validation_entry_t;
73
74 static int logpage_ie_verify(ds_scsi_info_t *,
75 scsi_log_parameter_header_t *, int, nvlist_t *);
76 static int logpage_temp_verify(ds_scsi_info_t *,
77 scsi_log_parameter_header_t *, int, nvlist_t *);
78 static int logpage_selftest_verify(ds_scsi_info_t *,
79 scsi_log_parameter_header_t *, int, nvlist_t *);
80
81 static int logpage_ie_analyze(ds_scsi_info_t *,
82 scsi_log_parameter_header_t *, int);
83 static int logpage_temp_analyze(ds_scsi_info_t *,
84 scsi_log_parameter_header_t *, int);
85 static int logpage_selftest_analyze(ds_scsi_info_t *,
86 scsi_log_parameter_header_t *, int);
87
88 static struct logpage_validation_entry log_validation[] = {
89 { LOGPAGE_IE, LOGPAGE_SUPP_IE,
90 "informational-exceptions",
91 logpage_ie_verify, logpage_ie_analyze },
92 { LOGPAGE_TEMP, LOGPAGE_SUPP_TEMP,
93 "temperature",
94 logpage_temp_verify, logpage_temp_analyze },
95 { LOGPAGE_SELFTEST, LOGPAGE_SUPP_SELFTEST,
96 "self-test",
97 logpage_selftest_verify, logpage_selftest_analyze }
98 };
99
100 #define NLOG_VALIDATION (sizeof (log_validation) / sizeof (log_validation[0]))
101
102 /*
103 * Given an extended sense page, retrieves the sense key, as well as the
104 * additional sense code information.
105 */
106 static void
107 scsi_translate_error(struct scsi_extended_sense *rq, uint_t *skeyp,
108 uint_t *ascp, uint_t *ascqp)
109 {
110 struct scsi_descr_sense_hdr *sdsp =
111 (struct scsi_descr_sense_hdr *)rq;
112
113 *skeyp = rq->es_key;
114
115 /*
116 * Get asc, ascq and info field from sense data. There are two
117 * possible formats (fixed sense data and descriptor sense data)
118 * depending on the value of es_code.
119 */
120 switch (rq->es_code) {
121 case CODE_FMT_DESCR_CURRENT:
122 case CODE_FMT_DESCR_DEFERRED:
123
124 *ascp = sdsp->ds_add_code;
125 *ascqp = sdsp->ds_qual_code;
126 break;
127
128 case CODE_FMT_FIXED_CURRENT:
129 case CODE_FMT_FIXED_DEFERRED:
130 default:
131
132 if (rq->es_add_len >= 6) {
133 *ascp = rq->es_add_code;
134 *ascqp = rq->es_qual_code;
135 } else {
136 *ascp = 0xff;
137 *ascqp = 0xff;
138 }
139 break;
140 }
141 }
142
143 /*
144 * Routines built atop the bare uscsi commands, which take into account the
145 * command length, automatically translate any scsi errors, and transparently
146 * call into the simulator if active.
147 */
148 static int
149 scsi_mode_select(ds_scsi_info_t *sip, uchar_t page_code, int options,
150 void *buf, uint_t buflen, scsi_ms_hdrs_t *headers, uint_t *skp,
151 uint_t *ascp, uint_t *ascqp)
152 {
153 int result;
154 struct scsi_extended_sense sense;
155 int senselen = sizeof (struct scsi_extended_sense);
156 struct mode_page *mp = (struct mode_page *)buf;
157
158 assert(sip->si_cdblen == MODE_CMD_LEN_6 ||
159 sip->si_cdblen == MODE_CMD_LEN_10);
160 assert(headers->ms_length == sip->si_cdblen);
161
162 bzero(&sense, sizeof (struct scsi_extended_sense));
163
164 if (mp->ps) {
165 options |= MODE_SELECT_SP;
166 mp->ps = 0;
167 } else {
168 options &= ~MODE_SELECT_SP;
169 }
170
171 if (sip->si_cdblen == MODE_CMD_LEN_6) {
172 /* The following fields are reserved during mode select: */
173 headers->ms_hdr.g0.ms_header.length = 0;
174 headers->ms_hdr.g0.ms_header.device_specific = 0;
175
176 if (sip->si_sim)
177 result = simscsi_mode_select(sip->si_sim,
178 page_code, options, buf, buflen,
179 &headers->ms_hdr.g0, &sense, &senselen);
180 else
181 result = uscsi_mode_select(sip->si_dsp->ds_fd,
182 page_code, options, buf, buflen,
183 &headers->ms_hdr.g0, &sense, &senselen);
184 } else {
185 /* The following fields are reserved during mode select: */
186 headers->ms_hdr.g1.ms_header.length = 0;
187 headers->ms_hdr.g1.ms_header.device_specific = 0;
188
189 if (sip->si_sim)
190 result = simscsi_mode_select_10(sip->si_sim,
191 page_code, options, buf, buflen,
192 &headers->ms_hdr.g1, &sense, &senselen);
193 else
194 result = uscsi_mode_select_10(sip->si_dsp->ds_fd,
195 page_code, options, buf, buflen,
196 &headers->ms_hdr.g1, &sense, &senselen);
197 }
198
199 if (result != 0)
200 scsi_translate_error(&sense, skp, ascp, ascqp);
201
202 return (result);
203 }
204
205 static int
206 scsi_mode_sense(ds_scsi_info_t *sip, uchar_t page_code, uchar_t pc,
207 void *buf, uint_t buflen, scsi_ms_hdrs_t *headers, uint_t *skp,
208 uint_t *ascp, uint_t *ascqp)
209 {
210 int result;
211 struct scsi_extended_sense sense;
212 int senselen = sizeof (struct scsi_extended_sense);
213
214 assert(sip->si_cdblen == MODE_CMD_LEN_6 ||
215 sip->si_cdblen == MODE_CMD_LEN_10);
216
217 bzero(&sense, sizeof (struct scsi_extended_sense));
218
219 bzero(headers, sizeof (scsi_ms_hdrs_t));
220 headers->ms_length = sip->si_cdblen;
221
222 if (sip->si_cdblen == MODE_CMD_LEN_6) {
223 if (sip->si_sim)
224 result = simscsi_mode_sense(sip->si_sim,
225 page_code, pc, buf, buflen, &headers->ms_hdr.g0,
226 &sense, &senselen);
227 else
228 result = uscsi_mode_sense(sip->si_dsp->ds_fd, page_code,
229 pc, buf, buflen, &headers->ms_hdr.g0, &sense,
230 &senselen);
231 } else {
232 if (sip->si_sim)
233 result = simscsi_mode_sense_10(sip->si_sim,
234 page_code, pc, buf, buflen, &headers->ms_hdr.g1,
235 &sense, &senselen);
236 else
237 result = uscsi_mode_sense_10(sip->si_dsp->ds_fd,
238 page_code, pc, buf, buflen, &headers->ms_hdr.g1,
239 &sense, &senselen);
240 }
241
242 if (result != 0)
243 scsi_translate_error(&sense, skp, ascp, ascqp);
244
245 return (result);
246 }
247
248 static int
249 scsi_request_sense(ds_scsi_info_t *sip, uint_t *skp, uint_t *ascp,
250 uint_t *ascqp)
251 {
252 struct scsi_extended_sense sense, sensebuf;
253 int senselen = sizeof (struct scsi_extended_sense);
254 int sensebuflen = sizeof (struct scsi_extended_sense);
255 int result;
256
257 bzero(&sense, sizeof (struct scsi_extended_sense));
258 bzero(&sensebuf, sizeof (struct scsi_extended_sense));
259
260 if (sip->si_sim)
261 result = simscsi_request_sense(sip->si_sim,
262 (caddr_t)&sensebuf, sensebuflen, &sense, &senselen);
263 else
264 result = uscsi_request_sense(sip->si_dsp->ds_fd,
265 (caddr_t)&sensebuf, sensebuflen, &sense, &senselen);
266
267 if (result == 0)
268 scsi_translate_error(&sensebuf, skp, ascp, ascqp);
269 else
270 scsi_translate_error(&sense, skp, ascp, ascqp);
271
272 return (result);
273 }
274
275 static int
276 scsi_log_sense(ds_scsi_info_t *sip, int page_code, int page_control,
277 caddr_t page_data, int page_size, uint_t *skp, uint_t *ascp, uint_t *ascqp)
278 {
279 int result;
280 struct scsi_extended_sense sense;
281 int senselen = sizeof (struct scsi_extended_sense);
282
283 if (sip->si_sim)
284 result = simscsi_log_sense(sip->si_sim,
285 page_code, page_control, page_data, page_size, &sense,
286 &senselen);
287 else
288 result = uscsi_log_sense(sip->si_dsp->ds_fd,
289 page_code, page_control, page_data, page_size, &sense,
290 &senselen);
291
292 if (result != 0)
293 scsi_translate_error(&sense, skp, ascp, ascqp);
294
295 return (result);
296 }
297
298 /*
299 * Given a list of supported mode pages, determine if the given page is present.
300 */
301 static boolean_t
302 mode_page_present(uchar_t *pgdata, uint_t pgdatalen, uchar_t pagecode)
303 {
304 uint_t i = 0;
305 struct mode_page *pg;
306 boolean_t found = B_FALSE;
307
308 /*
309 * The mode page list contains all mode pages supported by the device,
310 * one after the other.
311 */
312 while (i < pgdatalen) {
313 pg = (struct mode_page *)&pgdata[i];
314
315 if (pg->code == pagecode) {
316 found = B_TRUE;
317 break;
318 }
319
320 i += MODESENSE_PAGE_LEN(pg);
321 }
322
323 return (found);
324 }
325
326 /*
327 * Load mode pages and check that the appropriate pages are supported.
328 *
329 * As part of this process, we determine which form of the MODE SENSE / MODE
330 * SELECT command to use (the 6-byte or 10-byte version) by executing a MODE
331 * SENSE command for a page that should be implemented by the device.
332 */
333 static int
334 load_modepages(ds_scsi_info_t *sip)
335 {
336 int allpages_buflen;
337 uchar_t *allpages;
338 scsi_ms_hdrs_t headers;
339 int result;
340 uint_t skey, asc, ascq;
341 int datalength = 0;
342 scsi_ms_header_t *smh = &headers.ms_hdr.g0;
343 scsi_ms_header_g1_t *smh_g1 = &headers.ms_hdr.g1;
344 nvlist_t *nvl;
345
346 allpages_buflen = MAX_BUFLEN(scsi_ms_header_g1_t);
347 if ((allpages = calloc(allpages_buflen, 1)) == NULL)
348 return (scsi_set_errno(sip, EDS_NOMEM));
349
350 bzero(&headers, sizeof (headers));
351
352 /*
353 * Attempt a mode sense(6). If that fails, try a mode sense(10)
354 *
355 * allpages is allocated to be of the maximum size for either a mode
356 * sense(6) or mode sense(10) MODEPAGE_ALLPAGES response.
357 *
358 * Note that the length passed into uscsi_mode_sense should be set to
359 * the maximum size of the parameter response, which in this case is
360 * UCHAR_MAX - the size of the headers/block descriptors.
361 */
362 sip->si_cdblen = MODE_CMD_LEN_6;
363 if ((result = scsi_mode_sense(sip, MODEPAGE_ALLPAGES, PC_CURRENT,
364 (caddr_t)allpages, UCHAR_MAX - sizeof (scsi_ms_header_t),
365 &headers, &skey, &asc, &ascq)) == 0) {
366 /*
367 * Compute the data length of the page that contains all mode
368 * sense pages. This is a bit tricky because the format of the
369 * response from the lun is:
370 *
371 * header: <length> <medium type byte> <dev specific byte>
372 * <block descriptor length>
373 * [<optional block descriptor>]
374 * data: [<mode page data> <mode page data> ...]
375 *
376 * Since the length field in the header describes the length of
377 * the entire response. This includes the header, but NOT
378 * the length field itself, which is 1 or 2 bytes depending on
379 * which mode sense type (6- or 10- byte) is being executed.
380 *
381 * So, the data length equals the length value in the header
382 * plus 1 (because the length byte was not included in the
383 * length count), minus [[the sum of the length of the header
384 * and the length of the block descriptor]].
385 */
386 datalength = (smh->ms_header.length +
387 sizeof (smh->ms_header.length)) -
388 (sizeof (struct mode_header) +
389 smh->ms_header.bdesc_length);
390 } else if (SCSI_INVALID_OPCODE(skey, asc, ascq)) {
391 /*
392 * Fallback and try the 10-byte version of the command.
393 */
394 sip->si_cdblen = MODE_CMD_LEN_10;
395 result = scsi_mode_sense(sip, MODEPAGE_ALLPAGES,
396 PC_CURRENT, (caddr_t)allpages, allpages_buflen,
397 &headers, &skey, &asc, &ascq);
398
399 if (result == 0) {
400 datalength = (BE_16(smh_g1->ms_header.length) +
401 sizeof (smh_g1->ms_header.length)) -
402 (sizeof (struct mode_header_g1) +
403 BE_16(smh_g1->ms_header.bdesc_length));
404
405 }
406 }
407
408 if (result == 0 && datalength >= 0) {
409 if (nvlist_add_int8(sip->si_dsp->ds_state, "command-length",
410 sip->si_cdblen == MODE_CMD_LEN_6 ? 6 : 10) != 0) {
411 free(allpages);
412 return (scsi_set_errno(sip, EDS_NOMEM));
413 }
414
415 nvl = NULL;
416 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0 ||
417 nvlist_add_nvlist(sip->si_dsp->ds_state, "modepages",
418 nvl) != 0) {
419 free(allpages);
420 nvlist_free(nvl);
421 return (scsi_set_errno(sip, EDS_NOMEM));
422 }
423
424 nvlist_free(nvl);
425 result = nvlist_lookup_nvlist(sip->si_dsp->ds_state,
426 "modepages", &sip->si_state_modepage);
427 assert(result == 0);
428
429 /*
430 * One of the sets of the commands (above) succeeded, so now
431 * look for the mode pages we need and record them appropriately
432 */
433 if (mode_page_present(allpages, datalength,
434 MODEPAGE_INFO_EXCPT)) {
435
436 nvl = NULL;
437 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0 ||
438 nvlist_add_nvlist(sip->si_state_modepage,
439 "informational-exceptions", nvl) != 0) {
440 free(allpages);
441 nvlist_free(nvl);
442 return (scsi_set_errno(sip, EDS_NOMEM));
443 }
444 nvlist_free(nvl);
445 sip->si_supp_mode |= MODEPAGE_SUPP_IEC;
446 result = nvlist_lookup_nvlist(sip->si_state_modepage,
447 "informational-exceptions", &sip->si_state_iec);
448 assert(result == 0);
449 }
450
451 } else {
452 /*
453 * If the device failed to respond to one of the basic commands,
454 * then assume it's not a SCSI device or otherwise doesn't
455 * support the necessary transport.
456 */
457 if (datalength < 0)
458 dprintf("command returned invalid data length (%d)\n",
459 datalength);
460 else
461 dprintf("failed to load modepages (KEY=0x%x "
462 "ASC=0x%x ASCQ=0x%x)\n", skey, asc, ascq);
463
464 result = scsi_set_errno(sip, EDS_NO_TRANSPORT);
465 }
466
467 free(allpages);
468 return (result);
469 }
470
471 /*
472 * Verify a single logpage. This will do some generic validation and then call
473 * the logpage-specific function for further verification.
474 */
475 static int
476 verify_logpage(ds_scsi_info_t *sip, logpage_validation_entry_t *lp)
477 {
478 scsi_log_header_t *lhp;
479 struct scsi_extended_sense sense;
480 int buflen;
481 int log_length;
482 int result = 0;
483 uint_t kp, asc, ascq;
484 nvlist_t *nvl;
485
486 buflen = MAX_BUFLEN(scsi_log_header_t);
487 if ((lhp = calloc(buflen, 1)) == NULL)
488 return (scsi_set_errno(sip, EDS_NOMEM));
489 bzero(&sense, sizeof (struct scsi_extended_sense));
490
491 nvl = NULL;
492 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0 ||
493 nvlist_add_nvlist(sip->si_state_logpage, lp->ve_desc, nvl) != 0) {
494 nvlist_free(nvl);
495 free(lhp);
496 return (scsi_set_errno(sip, EDS_NOMEM));
497 }
498 nvlist_free(nvl);
499 result = nvlist_lookup_nvlist(sip->si_state_logpage, lp->ve_desc, &nvl);
500 assert(result == 0);
501
502 result = scsi_log_sense(sip, lp->ve_code,
503 PC_CUMULATIVE, (caddr_t)lhp, buflen, &kp, &asc, &ascq);
504
505 if (result == 0) {
506 log_length = BE_16(lhp->lh_length);
507 if (nvlist_add_uint16(nvl, "length", log_length) != 0) {
508 free(lhp);
509 return (scsi_set_errno(sip, EDS_NOMEM));
510 }
511
512 if (lp->ve_validate(sip, (scsi_log_parameter_header_t *)
513 (((char *)lhp) + sizeof (scsi_log_header_t)),
514 log_length, nvl) != 0) {
515 free(lhp);
516 return (-1);
517 }
518 } else {
519 dprintf("failed to load %s log page (KEY=0x%x "
520 "ASC=0x%x ASCQ=0x%x)\n", lp->ve_desc, kp, asc, ascq);
521 }
522
523 free(lhp);
524 return (0);
525 }
526
527 /*
528 * Load log pages and determine which pages are supported.
529 */
530 static int
531 load_logpages(ds_scsi_info_t *sip)
532 {
533 int buflen;
534 scsi_supported_log_pages_t *sp;
535 struct scsi_extended_sense sense;
536 int result;
537 uint_t sk, asc, ascq;
538 int i, j;
539 nvlist_t *nvl;
540
541 buflen = MAX_BUFLEN(scsi_log_header_t);
542 if ((sp = calloc(buflen, 1)) == NULL)
543 return (scsi_set_errno(sip, EDS_NOMEM));
544
545 bzero(&sense, sizeof (struct scsi_extended_sense));
546
547 if ((result = scsi_log_sense(sip, LOGPAGE_SUPP_LIST,
548 PC_CUMULATIVE, (caddr_t)sp, buflen, &sk, &asc, &ascq)) == 0) {
549 int pagecount = BE_16(sp->slp_hdr.lh_length);
550
551 for (i = 0; i < pagecount; i++) {
552 for (j = 0; j < NLOG_VALIDATION; j++) {
553 if (log_validation[j].ve_code ==
554 sp->slp_pages[i])
555 sip->si_supp_log |=
556 log_validation[j].ve_supported;
557 }
558 }
559 }
560
561 free(sp);
562 if (result == 0) {
563 nvl = NULL;
564 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0 ||
565 nvlist_add_nvlist(sip->si_dsp->ds_state, "logpages",
566 nvl) != 0) {
567 nvlist_free(nvl);
568 return (scsi_set_errno(sip, EDS_NOMEM));
569 }
570
571 nvlist_free(nvl);
572 result = nvlist_lookup_nvlist(sip->si_dsp->ds_state,
573 "logpages", &sip->si_state_logpage);
574 assert(result == 0);
575
576 /*
577 * Validate the logpage contents.
578 */
579 for (i = 0; i < NLOG_VALIDATION; i++) {
580 if ((sip->si_supp_log &
581 log_validation[i].ve_supported) == 0)
582 continue;
583
584 /*
585 * verify_logpage will clear the supported bit if
586 * verification fails.
587 */
588 if (verify_logpage(sip, &log_validation[i]) != 0)
589 return (-1);
590 }
591
592 } else {
593 dprintf("failed to get log pages "
594 "(KEY=0x%x ASC=0x%x ASCq=0x%x)\n", sk, asc, ascq);
595 }
596
597 /*
598 * We always return 0 here, even if the required log pages aren't
599 * supported.
600 */
601 return (0);
602 }
603
604 /*
605 * Verify that the IE log page is sane. This log page is potentially chock-full
606 * of vendor specific information that we do not know how to access. All we can
607 * do is check for the generic predictive failure bit. If this log page is not
608 * well-formed, then bail out.
609 */
610 static int
611 logpage_ie_verify(ds_scsi_info_t *sip, scsi_log_parameter_header_t *lphp,
612 int log_length, nvlist_t *nvl)
613 {
614 int i, plen = 0;
615 boolean_t seen = B_FALSE;
616 scsi_ie_log_param_t *iep =
617 (scsi_ie_log_param_t *)lphp;
618
619 for (i = 0; i < log_length; i += plen) {
620 iep = (scsi_ie_log_param_t *)((char *)iep + plen);
621
622 if (BE_16(iep->ie_hdr.lph_param) == LOGPARAM_IE) {
623 if (nvlist_add_boolean_value(nvl, "general",
624 B_TRUE) != 0)
625 return (scsi_set_errno(sip, EDS_NOMEM));
626
627 if (lphp->lph_length < LOGPARAM_IE_MIN_LEN) {
628 if (nvlist_add_uint8(nvl,
629 "invalid-length", lphp->lph_length) != 0)
630 return (scsi_set_errno(sip, EDS_NOMEM));
631 } else {
632 seen = B_TRUE;
633 }
634 break;
635 }
636
637 plen = iep->ie_hdr.lph_length +
638 sizeof (scsi_log_parameter_header_t);
639 }
640
641 if (!seen) {
642 sip->si_supp_log &= ~LOGPAGE_SUPP_IE;
643 dprintf("IE logpage validation failed\n");
644 }
645
646 return (0);
647 }
648
649 /*
650 * Verify the contents of the temperature log page. The temperature log page
651 * contains two log parameters: the current temperature, and (optionally) the
652 * reference temperature. For the verification phase, we check that the two
653 * parameters we care about are well-formed. If there is no reference
654 * temperature, then we cannot use the page for monitoring purposes.
655 */
656 static int
657 logpage_temp_verify(ds_scsi_info_t *sip,
658 scsi_log_parameter_header_t *lphp, int log_length, nvlist_t *nvl)
659 {
660 int i, plen = 0;
661 boolean_t has_reftemp = B_FALSE;
662 boolean_t bad_length = B_FALSE;
663 ushort_t param_code;
664
665 for (i = 0; i < log_length; i += plen) {
666 lphp = (scsi_log_parameter_header_t *)((char *)lphp + plen);
667 param_code = BE_16(lphp->lph_param);
668
669 switch (param_code) {
670 case LOGPARAM_TEMP_CURTEMP:
671 if (nvlist_add_boolean_value(nvl, "current-temperature",
672 B_TRUE) != 0)
673 return (scsi_set_errno(sip, EDS_NOMEM));
674 if (lphp->lph_length != LOGPARAM_TEMP_LEN) {
675 if (nvlist_add_uint8(nvl,
676 "invalid-length", lphp->lph_length) != 0)
677 return (scsi_set_errno(sip, EDS_NOMEM));
678 bad_length = B_TRUE;
679 }
680 break;
681
682 case LOGPARAM_TEMP_REFTEMP:
683 if (nvlist_add_boolean_value(nvl,
684 "reference-temperature", B_TRUE) != 0)
685 return (scsi_set_errno(sip, EDS_NOMEM));
686 if (lphp->lph_length != LOGPARAM_TEMP_LEN) {
687 if (nvlist_add_uint8(nvl,
688 "invalid-length", lphp->lph_length) != 0)
689 return (scsi_set_errno(sip, EDS_NOMEM));
690 bad_length = B_TRUE;
691 }
692 has_reftemp = B_TRUE;
693 break;
694 }
695
696 plen = lphp->lph_length +
697 sizeof (scsi_log_parameter_header_t);
698 }
699
700 if (bad_length || !has_reftemp) {
701 sip->si_supp_log &= ~LOGPAGE_SUPP_TEMP;
702 dprintf("temperature logpage validation failed\n");
703 }
704
705 return (0);
706 }
707
708 /*
709 * Verify the contents of the self test log page. The log supports a maximum of
710 * 20 entries, where each entry's parameter code is its index in the log. We
711 * check that the parameter codes fall within this range, and that the size of
712 * each page is what we expect. It's perfectly acceptable for there to be no
713 * entries in this log, so we must also be sure to validate the contents as part
714 * of the analysis phase.
715 */
716 static int
717 logpage_selftest_verify(ds_scsi_info_t *sip,
718 scsi_log_parameter_header_t *lphp, int log_length, nvlist_t *nvl)
719 {
720 int i, plen = 0;
721 boolean_t bad = B_FALSE;
722 int entries = 0;
723 ushort_t param_code;
724
725 for (i = 0; i < log_length; i += plen, entries++) {
726 lphp = (scsi_log_parameter_header_t *)((char *)lphp + plen);
727 param_code = BE_16(lphp->lph_param);
728
729 if (param_code < LOGPAGE_SELFTEST_MIN_PARAM_CODE ||
730 param_code > LOGPAGE_SELFTEST_MAX_PARAM_CODE) {
731 if (nvlist_add_uint16(nvl, "invalid-param-code",
732 param_code) != 0)
733 return (scsi_set_errno(sip, EDS_NOMEM));
734 bad = B_TRUE;
735 break;
736 }
737
738 if (lphp->lph_length != LOGPAGE_SELFTEST_PARAM_LEN) {
739 if (nvlist_add_uint8(nvl, "invalid-length",
740 lphp->lph_length) != 0)
741 return (scsi_set_errno(sip, EDS_NOMEM));
742 bad = B_TRUE;
743 break;
744
745 }
746
747 plen = lphp->lph_length +
748 sizeof (scsi_log_parameter_header_t);
749 }
750
751 if (bad) {
752 sip->si_supp_log &= ~LOGPAGE_SUPP_SELFTEST;
753 dprintf("selftest logpage validation failed\n");
754 }
755
756 return (0);
757 }
758
759 /*
760 * Load the current IE mode pages
761 */
762 static int
763 load_ie_modepage(ds_scsi_info_t *sip)
764 {
765 struct scsi_ms_hdrs junk_hdrs;
766 int result;
767 uint_t skey, asc, ascq;
768
769 if (!(sip->si_supp_mode & MODEPAGE_SUPP_IEC))
770 return (0);
771
772 bzero(&sip->si_iec_current, sizeof (sip->si_iec_current));
773 bzero(&sip->si_iec_changeable, sizeof (sip->si_iec_changeable));
774
775 if ((result = scsi_mode_sense(sip,
776 MODEPAGE_INFO_EXCPT, PC_CURRENT, &sip->si_iec_current,
777 MODEPAGE_INFO_EXCPT_LEN, &sip->si_hdrs, &skey, &asc,
778 &ascq)) == 0) {
779 result = scsi_mode_sense(sip,
780 MODEPAGE_INFO_EXCPT, PC_CHANGEABLE,
781 &sip->si_iec_changeable,
782 MODEPAGE_INFO_EXCPT_LEN, &junk_hdrs, &skey, &asc, &ascq);
783 }
784
785 if (result != 0) {
786 dprintf("failed to get IEC modepage (KEY=0x%x "
787 "ASC=0x%x ASCQ=0x%x)", skey, asc, ascq);
788 sip->si_supp_mode &= ~MODEPAGE_SUPP_IEC;
789 } else {
790 if (nvlist_add_boolean_value(sip->si_state_iec,
791 "dexcpt", sip->si_iec_current.ie_dexcpt) != 0 ||
792 nvlist_add_boolean_value(sip->si_state_iec,
793 "logerr", sip->si_iec_current.ie_logerr) != 0 ||
794 nvlist_add_uint8(sip->si_state_iec,
795 "mrie", sip->si_iec_current.ie_mrie) != 0 ||
796 nvlist_add_boolean_value(sip->si_state_iec,
797 "test", sip->si_iec_current.ie_test) != 0 ||
798 nvlist_add_boolean_value(sip->si_state_iec,
799 "ewasc", sip->si_iec_current.ie_ewasc) != 0 ||
800 nvlist_add_boolean_value(sip->si_state_iec,
801 "perf", sip->si_iec_current.ie_perf) != 0 ||
802 nvlist_add_boolean_value(sip->si_state_iec,
803 "ebf", sip->si_iec_current.ie_ebf) != 0 ||
804 nvlist_add_uint32(sip->si_state_iec,
805 "interval-timer",
806 BE_32(sip->si_iec_current.ie_interval_timer)) != 0 ||
807 nvlist_add_uint32(sip->si_state_iec,
808 "report-count",
809 BE_32(sip->si_iec_current.ie_report_count)) != 0)
810 return (scsi_set_errno(sip, EDS_NOMEM));
811 }
812
813 return (0);
814 }
815
816 /*
817 * Enable IE reporting. We prefer the following settings:
818 *
819 * (1) DEXCPT = 0
820 * (3) MRIE = 6 (IE_REPORT_ON_REQUEST)
821 * (4) EWASC = 1
822 * (6) REPORT COUNT = 0x00000001
823 * (7) LOGERR = 1
824 *
825 * However, not all drives support changing these values, and the current state
826 * may be useful enough as-is. For example, some drives support IE logging, but
827 * don't support changing the MRIE. In this case, we can still use the
828 * information provided by the log page.
829 */
830 static int
831 scsi_enable_ie(ds_scsi_info_t *sip, boolean_t *changed)
832 {
833 scsi_ie_page_t new_iec_page;
834 scsi_ms_hdrs_t hdrs;
835 uint_t skey, asc, ascq;
836
837 if (!(sip->si_supp_mode & MODEPAGE_SUPP_IEC))
838 return (0);
839
840 bzero(&new_iec_page, sizeof (new_iec_page));
841 bzero(&hdrs, sizeof (hdrs));
842
843 (void) memcpy(&new_iec_page, &sip->si_iec_current,
844 sizeof (new_iec_page));
845
846 if (IEC_IE_CHANGEABLE(sip->si_iec_changeable))
847 new_iec_page.ie_dexcpt = 0;
848
849 if (IEC_MRIE_CHANGEABLE(sip->si_iec_changeable))
850 new_iec_page.ie_mrie = IE_REPORT_ON_REQUEST;
851
852 /*
853 * We only want to enable warning reporting if we are able to change the
854 * mrie to report on request. Otherwise, we risk unnecessarily
855 * interrupting normal SCSI commands with a CHECK CONDITION code.
856 */
857 if (IEC_EWASC_CHANGEABLE(sip->si_iec_changeable)) {
858 if (new_iec_page.ie_mrie == IE_REPORT_ON_REQUEST)
859 new_iec_page.ie_ewasc = 1;
860 else
861 new_iec_page.ie_ewasc = 0;
862 }
863
864 if (IEC_RPTCNT_CHANGEABLE(sip->si_iec_changeable))
865 new_iec_page.ie_report_count = BE_32(1);
866
867 if (IEC_LOGERR_CHANGEABLE(sip->si_iec_changeable))
868 new_iec_page.ie_logerr = 1;
869
870 /*
871 * Now compare the new mode page with the existing one.
872 * if there's no difference, there's no need for a mode select
873 */
874 if (memcmp(&new_iec_page, &sip->si_iec_current,
875 MODEPAGE_INFO_EXCPT_LEN) == 0) {
876 *changed = B_FALSE;
877 } else {
878 (void) memcpy(&hdrs, &sip->si_hdrs, sizeof (sip->si_hdrs));
879
880 if (scsi_mode_select(sip,
881 MODEPAGE_INFO_EXCPT, MODE_SELECT_PF, &new_iec_page,
882 MODEPAGE_INFO_EXCPT_LEN, &hdrs, &skey, &asc, &ascq) == 0) {
883 *changed = B_TRUE;
884 } else {
885 dprintf("failed to enable IE (KEY=0x%x "
886 "ASC=0x%x ASCQ=0x%x)\n", skey, asc, ascq);
887 *changed = B_FALSE;
888 }
889 }
890
891 if (nvlist_add_boolean_value(sip->si_state_iec, "changed",
892 *changed) != 0)
893 return (scsi_set_errno(sip, EDS_NOMEM));
894
895 return (0);
896 }
897
898 /*
899 * Clear the GLTSD bit, indicating log pages should be saved to non-volatile
900 * storage.
901 */
902 static int
903 clear_gltsd(ds_scsi_info_t *sip)
904 {
905 scsi_ms_hdrs_t hdrs, junk_hdrs;
906 struct mode_control_scsi3 control_pg_cur, control_pg_chg;
907 int result;
908 uint_t skey, asc, ascq;
909
910 bzero(&hdrs, sizeof (hdrs));
911 bzero(&control_pg_cur, sizeof (control_pg_cur));
912 bzero(&control_pg_chg, sizeof (control_pg_chg));
913
914 result = scsi_mode_sense(sip,
915 MODEPAGE_CTRL_MODE, PC_CURRENT, &control_pg_cur,
916 MODEPAGE_CTRL_MODE_LEN, &hdrs, &skey, &asc, &ascq);
917
918 if (result != 0) {
919 dprintf("failed to read Control mode page (KEY=0x%x "
920 "ASC=0x%x ASCQ=0x%x)\n", skey, asc, ascq);
921 } else if (control_pg_cur.mode_page.length !=
922 PAGELENGTH_MODE_CONTROL_SCSI3) {
923 dprintf("SCSI-3 control mode page not supported\n");
924 } else if ((result = scsi_mode_sense(sip,
925 MODEPAGE_CTRL_MODE, PC_CHANGEABLE, &control_pg_chg,
926 MODEPAGE_CTRL_MODE_LEN, &junk_hdrs, &skey, &asc, &ascq))
927 != 0) {
928 dprintf("failed to read changeable Control mode page (KEY=0x%x "
929 "ASC=0x%x ASCQ=0x%x)\n", skey, asc, ascq);
930 } else if (control_pg_cur.gltsd && !GLTSD_CHANGEABLE(control_pg_chg)) {
931 dprintf("gltsd is set and not changeable\n");
932 if (nvlist_add_boolean_value(sip->si_dsp->ds_state,
933 "gltsd", control_pg_cur.gltsd) != 0)
934 return (scsi_set_errno(sip, EDS_NOMEM));
935 } else if (control_pg_cur.gltsd) {
936 control_pg_cur.gltsd = 0;
937 result = scsi_mode_select(sip,
938 MODEPAGE_CTRL_MODE, MODE_SELECT_PF, &control_pg_cur,
939 MODEPAGE_CTRL_MODE_LEN, &hdrs, &skey, &asc, &ascq);
940 if (result != 0)
941 dprintf("failed to enable GLTSD (KEY=0x%x "
942 "ASC=0x%x ASCQ=0x%x\n", skey, asc, ascq);
943 if (nvlist_add_boolean_value(sip->si_dsp->ds_state,
944 "gltsd", control_pg_cur.gltsd) != 0)
945 return (scsi_set_errno(sip, EDS_NOMEM));
946 }
947
948 return (0);
949 }
950
951 /*
952 * Fetch the contents of the logpage, and then call the logpage-specific
953 * analysis function. The analysis function is responsible for detecting any
954 * faults and filling in the details.
955 */
956 static int
957 analyze_one_logpage(ds_scsi_info_t *sip, logpage_validation_entry_t *entry)
958 {
959 scsi_log_header_t *lhp;
960 scsi_log_parameter_header_t *lphp;
961 int buflen;
962 int log_length;
963 uint_t skey, asc, ascq;
964 int result;
965
966 buflen = MAX_BUFLEN(scsi_log_header_t);
967 if ((lhp = calloc(buflen, 1)) == NULL)
968 return (scsi_set_errno(sip, EDS_NOMEM));
969
970 result = scsi_log_sense(sip, entry->ve_code,
971 PC_CUMULATIVE, (caddr_t)lhp, buflen, &skey, &asc, &ascq);
972
973 if (result == 0) {
974 log_length = BE_16(lhp->lh_length);
975 lphp = (scsi_log_parameter_header_t *)(((uchar_t *)lhp) +
976 sizeof (scsi_log_header_t));
977
978 result = entry->ve_analyze(sip, lphp, log_length);
979 } else {
980 result = scsi_set_errno(sip, EDS_IO);
981 }
982
983 free(lhp);
984 return (result);
985 }
986
987 /*
988 * Analyze the IE logpage. If we find an IE log record with a non-zero 'asc',
989 * then we have a fault.
990 */
991 static int
992 logpage_ie_analyze(ds_scsi_info_t *sip, scsi_log_parameter_header_t *lphp,
993 int log_length)
994 {
995 int i, plen = 0;
996 scsi_ie_log_param_t *iep = (scsi_ie_log_param_t *)lphp;
997 nvlist_t *nvl;
998
999 assert(sip->si_dsp->ds_predfail == NULL);
1000 if (nvlist_alloc(&sip->si_dsp->ds_predfail, NV_UNIQUE_NAME, 0) != 0)
1001 return (scsi_set_errno(sip, EDS_NOMEM));
1002 nvl = sip->si_dsp->ds_predfail;
1003
1004 for (i = 0; i < log_length; i += plen) {
1005 iep = (scsi_ie_log_param_t *)((char *)iep + plen);
1006
1007 /*
1008 * Even though we validated the length during the initial phase,
1009 * never trust the device.
1010 */
1011 if (BE_16(iep->ie_hdr.lph_param) == LOGPARAM_IE &&
1012 iep->ie_hdr.lph_length >= LOGPARAM_IE_MIN_LEN) {
1013 if (nvlist_add_uint8(nvl, FM_EREPORT_PAYLOAD_SCSI_ASC,
1014 iep->ie_asc) != 0 ||
1015 nvlist_add_uint8(nvl, FM_EREPORT_PAYLOAD_SCSI_ASCQ,
1016 iep->ie_ascq) != 0)
1017 return (scsi_set_errno(sip, EDS_NOMEM));
1018
1019 if (iep->ie_asc != 0)
1020 sip->si_dsp->ds_faults |=
1021 DS_FAULT_PREDFAIL;
1022 break;
1023 }
1024 plen = iep->ie_hdr.lph_length +
1025 sizeof (scsi_log_parameter_header_t);
1026 }
1027
1028 return (0);
1029 }
1030
1031 static int
1032 logpage_temp_analyze(ds_scsi_info_t *sip, scsi_log_parameter_header_t *lphp,
1033 int log_length)
1034 {
1035 int i, plen = 0;
1036 uint8_t reftemp, curtemp;
1037 ushort_t param_code;
1038 scsi_temp_log_param_t *temp;
1039 nvlist_t *nvl;
1040
1041 assert(sip->si_dsp->ds_overtemp == NULL);
1042 if (nvlist_alloc(&sip->si_dsp->ds_overtemp, NV_UNIQUE_NAME, 0) != 0)
1043 return (scsi_set_errno(sip, EDS_NOMEM));
1044 nvl = sip->si_dsp->ds_overtemp;
1045
1046 reftemp = curtemp = INVALID_TEMPERATURE;
1047 for (i = 0; i < log_length; i += plen) {
1048 lphp = (scsi_log_parameter_header_t *)((char *)lphp + plen);
1049 param_code = BE_16(lphp->lph_param);
1050 temp = (scsi_temp_log_param_t *)lphp;
1051
1052 switch (param_code) {
1053 case LOGPARAM_TEMP_CURTEMP:
1054 if (lphp->lph_length != LOGPARAM_TEMP_LEN)
1055 break;
1056
1057 if (nvlist_add_uint8(nvl,
1058 FM_EREPORT_PAYLOAD_SCSI_CURTEMP,
1059 temp->t_temp) != 0)
1060 return (scsi_set_errno(sip, EDS_NOMEM));
1061 curtemp = temp->t_temp;
1062 break;
1063
1064 case LOGPARAM_TEMP_REFTEMP:
1065 if (lphp->lph_length != LOGPARAM_TEMP_LEN)
1066 break;
1067
1068 if (nvlist_add_uint8(nvl,
1069 FM_EREPORT_PAYLOAD_SCSI_THRESHTEMP,
1070 temp->t_temp) != 0)
1071 return (scsi_set_errno(sip, EDS_NOMEM));
1072 reftemp = temp->t_temp;
1073 break;
1074 }
1075
1076 plen = lphp->lph_length +
1077 sizeof (scsi_log_parameter_header_t);
1078 }
1079
1080 if (reftemp != INVALID_TEMPERATURE && curtemp != INVALID_TEMPERATURE &&
1081 curtemp > reftemp)
1082 sip->si_dsp->ds_faults |= DS_FAULT_OVERTEMP;
1083
1084 return (0);
1085 }
1086
1087 static int
1088 logpage_selftest_analyze(ds_scsi_info_t *sip, scsi_log_parameter_header_t *lphp,
1089 int log_length)
1090 {
1091 int i, plen = 0;
1092 int entries = 0;
1093 ushort_t param_code;
1094 scsi_selftest_log_param_t *stp;
1095 nvlist_t *nvl;
1096
1097 assert(sip->si_dsp->ds_testfail == NULL);
1098 if (nvlist_alloc(&sip->si_dsp->ds_testfail, NV_UNIQUE_NAME, 0) != 0)
1099 return (scsi_set_errno(sip, EDS_NOMEM));
1100 nvl = sip->si_dsp->ds_testfail;
1101
1102 for (i = 0; i < log_length; i += plen, entries++) {
1103 lphp = (scsi_log_parameter_header_t *)((char *)lphp + plen);
1104 param_code = BE_16(lphp->lph_param);
1105 stp = (scsi_selftest_log_param_t *)lphp;
1106
1107 if (param_code >= LOGPAGE_SELFTEST_MIN_PARAM_CODE &&
1108 param_code <= LOGPAGE_SELFTEST_MAX_PARAM_CODE &&
1109 lphp->lph_length >= LOGPAGE_SELFTEST_PARAM_LEN) {
1110 /*
1111 * We always log the last result, or the result of the
1112 * last completed test.
1113 */
1114 if ((param_code == 1 ||
1115 SELFTEST_COMPLETE(stp->st_results))) {
1116 if (nvlist_add_uint8(nvl,
1117 FM_EREPORT_PAYLOAD_SCSI_RESULTCODE,
1118 stp->st_results) != 0 ||
1119 nvlist_add_uint16(nvl,
1120 FM_EREPORT_PAYLOAD_SCSI_TIMESTAMP,
1121 BE_16(stp->st_timestamp)) != 0 ||
1122 nvlist_add_uint8(nvl,
1123 FM_EREPORT_PAYLOAD_SCSI_SEGMENT,
1124 stp->st_number) != 0 ||
1125 nvlist_add_uint64(nvl,
1126 FM_EREPORT_PAYLOAD_SCSI_ADDRESS,
1127 BE_64(stp->st_lba)) != 0)
1128 return (scsi_set_errno(sip,
1129 EDS_NOMEM));
1130
1131 if (SELFTEST_COMPLETE(stp->st_results)) {
1132 if (stp->st_results != SELFTEST_OK)
1133 sip->si_dsp->ds_faults |=
1134 DS_FAULT_TESTFAIL;
1135 return (0);
1136 }
1137 }
1138 }
1139
1140 plen = lphp->lph_length +
1141 sizeof (scsi_log_parameter_header_t);
1142 }
1143
1144 return (0);
1145 }
1146
1147 /*
1148 * Analyze the IE mode sense page explicitly. This is only needed if the IE log
1149 * page is not supported.
1150 */
1151 static int
1152 analyze_ie_sense(ds_scsi_info_t *sip)
1153 {
1154 uint_t skey, asc, ascq;
1155 nvlist_t *nvl;
1156
1157 /*
1158 * Don't bother checking if we weren't able to set our MRIE correctly.
1159 */
1160 if (sip->si_iec_current.ie_mrie != IE_REPORT_ON_REQUEST)
1161 return (0);
1162
1163 if (scsi_request_sense(sip, &skey, &asc, &ascq) != 0) {
1164 dprintf("failed to request IE page (KEY=0x%x ASC=0x%x "
1165 "ASCQ=0x%x)\n", skey, asc, ascq);
1166 return (scsi_set_errno(sip, EDS_IO));
1167 } else if (skey == KEY_NO_SENSE) {
1168 assert(sip->si_dsp->ds_predfail == NULL);
1169 if (nvlist_alloc(&sip->si_dsp->ds_predfail,
1170 NV_UNIQUE_NAME, 0) != 0)
1171 return (scsi_set_errno(sip, EDS_NOMEM));
1172 nvl = sip->si_dsp->ds_predfail;
1173
1174 if (nvlist_add_uint8(nvl,
1175 FM_EREPORT_PAYLOAD_SCSI_ASC, asc) != 0 ||
1176 nvlist_add_uint8(nvl,
1177 FM_EREPORT_PAYLOAD_SCSI_ASCQ, ascq) != 0) {
1178 nvlist_free(nvl);
1179 return (scsi_set_errno(sip, EDS_NOMEM));
1180 }
1181
1182 if (asc != 0)
1183 sip->si_dsp->ds_faults |= DS_FAULT_PREDFAIL;
1184 }
1185
1186 return (0);
1187 }
1188
1189 /*
1190 * Clean up the scsi-specific information structure.
1191 */
1192 static void
1193 ds_scsi_close(void *arg)
1194 {
1195 ds_scsi_info_t *sip = arg;
1196 if (sip->si_sim)
1197 (void) dlclose(sip->si_sim);
1198
1199 free(sip);
1200 }
1201
1202 /*
1203 * Initialize a single disk. Initialization consists of:
1204 *
1205 * 1. Check to see if the IE mechanism is enabled via MODE SENSE for the IE
1206 * Control page (page 0x1C).
1207 *
1208 * 2. If the IE page is available, try to set the following parameters:
1209 *
1210 * DEXCPT 0 Enable exceptions
1211 * MRIE 6 Only report IE information on request
1212 * EWASC 1 Enable warning reporting
1213 * REPORT COUNT 1 Only report an IE exception once
1214 * LOGERR 1 Enable logging of errors
1215 *
1216 * The remaining fields are left as-is, preserving the current values. If we
1217 * cannot set some of these fields, then we do our best. Some drives may
1218 * have a static configuration which still allows for some monitoring.
1219 *
1220 * 3. Check to see if the IE log page (page 0x2F) is supported by issuing a
1221 * LOG SENSE command.
1222 *
1223 * 4. Check to see if the self-test log page (page 0x10) is supported.
1224 *
1225 * 5. Check to see if the temperature log page (page 0x0D) is supported, and
1226 * contains a reference temperature.
1227 *
1228 * 6. Clear the GLTSD bit in control mode page 0xA. This will allow the drive
1229 * to save each of the log pages described above to nonvolatile storage.
1230 * This is essential if the drive is to remember its failures across
1231 * loss of power.
1232 */
1233 static void *
1234 ds_scsi_open_common(disk_status_t *dsp, ds_scsi_info_t *sip)
1235 {
1236 boolean_t changed;
1237
1238 sip->si_dsp = dsp;
1239
1240 /* Load and validate mode pages */
1241 if (load_modepages(sip) != 0) {
1242 ds_scsi_close(sip);
1243 return (NULL);
1244 }
1245
1246 /* Load and validate log pages */
1247 if (load_logpages(sip) != 0) {
1248 ds_scsi_close(sip);
1249 return (NULL);
1250 }
1251
1252 /* Load IE state */
1253 if (load_ie_modepage(sip) != 0 ||
1254 scsi_enable_ie(sip, &changed) != 0 ||
1255 (changed && load_ie_modepage(sip) != 0)) {
1256 ds_scsi_close(sip);
1257 return (NULL);
1258 }
1259
1260 /* Clear the GLTSD bit in the control page */
1261 if (sip->si_supp_log != 0 && clear_gltsd(sip) != 0) {
1262 ds_scsi_close(sip);
1263 return (NULL);
1264 }
1265
1266 return (sip);
1267 }
1268
1269 static void *
1270 ds_scsi_open_uscsi(disk_status_t *dsp)
1271 {
1272 ds_scsi_info_t *sip;
1273
1274 if ((sip = calloc(sizeof (ds_scsi_info_t), 1)) == NULL) {
1275 (void) ds_set_errno(dsp, EDS_NOMEM);
1276 return (NULL);
1277 }
1278
1279 return (ds_scsi_open_common(dsp, sip));
1280 }
1281
1282 static void *
1283 ds_scsi_open_sim(disk_status_t *dsp)
1284 {
1285 ds_scsi_info_t *sip;
1286
1287 if ((sip = calloc(sizeof (ds_scsi_info_t), 1)) == NULL) {
1288 (void) ds_set_errno(dsp, EDS_NOMEM);
1289 return (NULL);
1290 }
1291
1292 if ((sip->si_sim = dlopen(dsp->ds_path, RTLD_LAZY)) == NULL) {
1293 (void) ds_set_errno(dsp, EDS_NO_TRANSPORT);
1294 free(sip);
1295 return (NULL);
1296 }
1297
1298 return (ds_scsi_open_common(dsp, sip));
1299 }
1300
1301
1302 /*
1303 * Scan for any faults. The following steps are performed:
1304 *
1305 * 1. If the temperature log page is supported, check the current temperature
1306 * and threshold. If the current temperature exceeds the threshold, report
1307 * and overtemp fault.
1308 *
1309 * 2. If the selftest log page is supported, check to the last completed self
1310 * test. If the last completed test resulted in failure, report a selftest
1311 * fault.
1312 *
1313 * 3. If the IE log page is supported, check to see if failure is predicted. If
1314 * so, indicate a predictive failure fault.
1315 *
1316 * 4. If the IE log page is not supported, but the mode page supports report on
1317 * request mode, then issue a REQUEST SENSE for the mode page. Indicate a
1318 * predictive failure fault if necessary.
1319 */
1320 static int
1321 ds_scsi_scan(void *arg)
1322 {
1323 ds_scsi_info_t *sip = arg;
1324 int i;
1325
1326 for (i = 0; i < NLOG_VALIDATION; i++) {
1327 if ((sip->si_supp_log & log_validation[i].ve_supported) == 0)
1328 continue;
1329
1330 if (analyze_one_logpage(sip, &log_validation[i]) != 0)
1331 return (-1);
1332 }
1333
1334 if (!(sip->si_supp_log & LOGPAGE_SUPP_IE) &&
1335 (sip->si_supp_mode & MODEPAGE_SUPP_IEC) &&
1336 analyze_ie_sense(sip) != 0)
1337 return (-1);
1338
1339 return (0);
1340 }
1341
1342 ds_transport_t ds_scsi_uscsi_transport = {
1343 ds_scsi_open_uscsi,
1344 ds_scsi_close,
1345 ds_scsi_scan
1346 };
1347
1348 ds_transport_t ds_scsi_sim_transport = {
1349 ds_scsi_open_sim,
1350 ds_scsi_close,
1351 ds_scsi_scan
1352 };