68
69/*
70 * Definition of an async handler callback block. These are used to add
71 * SIMs and peripherals to the async callback lists.
72 */
73struct async_node {
74 SLIST_ENTRY(async_node) links;
75 u_int32_t event_enable; /* Async Event enables */
76 void (*callback)(void *arg, u_int32_t code,
77 struct cam_path *path, void *args);
78 void *callback_arg;
79};
80
81SLIST_HEAD(async_list, async_node);
82SLIST_HEAD(periph_list, cam_periph);
83static STAILQ_HEAD(highpowerlist, ccb_hdr) highpowerq;
84
85/*
86 * This is the maximum number of high powered commands (e.g. start unit)
87 * that can be outstanding at a particular time.
88 */
89#ifndef CAM_MAX_HIGHPOWER
90#define CAM_MAX_HIGHPOWER 4
91#endif
92
93/* number of high powered commands that can go through right now */
94static int num_highpower = CAM_MAX_HIGHPOWER;
95
96/*
97 * Structure for queueing a device in a run queue.
98 * There is one run queue for allocating new ccbs,
99 * and another for sending ccbs to the controller.
100 */
101struct cam_ed_qinfo {
102 cam_pinfo pinfo;
103 struct cam_ed *device;
104};
105
106/*
107 * The CAM EDT (Existing Device Table) contains the device information for
108 * all devices for all busses in the system. The table contains a
109 * cam_ed structure for each device on the bus.
110 */
111struct cam_ed {
112 TAILQ_ENTRY(cam_ed) links;
113 struct cam_ed_qinfo alloc_ccb_entry;
114 struct cam_ed_qinfo send_ccb_entry;
115 struct cam_et *target;
116 lun_id_t lun_id;
117 struct camq drvq; /*
118 * Queue of type drivers wanting to do
119 * work on this device.
120 */
121 struct cam_ccbq ccbq; /* Queue of pending ccbs */
122 struct async_list asyncs; /* Async callback info for this B/T/L */
123 struct periph_list periphs; /* All attached devices */
124 u_int generation; /* Generation number */
125 struct cam_periph *owner; /* Peripheral driver's ownership tag */
126 struct xpt_quirk_entry *quirk; /* Oddities about this device */
127 /* Storage for the inquiry data */
128#ifdef CAM_NEW_TRAN_CODE
129 cam_proto protocol;
130 u_int protocol_version;
131 cam_xport transport;
132 u_int transport_version;
133#endif /* CAM_NEW_TRAN_CODE */
134 struct scsi_inquiry_data inq_data;
135 u_int8_t inq_flags; /*
136 * Current settings for inquiry flags.
137 * This allows us to override settings
138 * like disconnection and tagged
139 * queuing for a device.
140 */
141 u_int8_t queue_flags; /* Queue flags from the control page */
142 u_int8_t serial_num_len;
143 u_int8_t *serial_num;
144 u_int32_t qfrozen_cnt;
145 u_int32_t flags;
146#define CAM_DEV_UNCONFIGURED 0x01
147#define CAM_DEV_REL_TIMEOUT_PENDING 0x02
148#define CAM_DEV_REL_ON_COMPLETE 0x04
149#define CAM_DEV_REL_ON_QUEUE_EMPTY 0x08
150#define CAM_DEV_RESIZE_QUEUE_NEEDED 0x10
151#define CAM_DEV_TAG_AFTER_COUNT 0x20
152#define CAM_DEV_INQUIRY_DATA_VALID 0x40
153 u_int32_t tag_delay_count;
154#define CAM_TAG_DELAY_COUNT 5
155 u_int32_t tag_saved_openings;
156 u_int32_t refcount;
157 struct callout_handle c_handle;
158};
159
160/*
161 * Each target is represented by an ET (Existing Target). These
162 * entries are created when a target is successfully probed with an
163 * identify, and removed when a device fails to respond after a number
164 * of retries, or a bus rescan finds the device missing.
165 */
166struct cam_et {
167 TAILQ_HEAD(, cam_ed) ed_entries;
168 TAILQ_ENTRY(cam_et) links;
169 struct cam_eb *bus;
170 target_id_t target_id;
171 u_int32_t refcount;
172 u_int generation;
173 struct timeval last_reset;
174};
175
176/*
177 * Each bus is represented by an EB (Existing Bus). These entries
178 * are created by calls to xpt_bus_register and deleted by calls to
179 * xpt_bus_deregister.
180 */
181struct cam_eb {
182 TAILQ_HEAD(, cam_et) et_entries;
183 TAILQ_ENTRY(cam_eb) links;
184 path_id_t path_id;
185 struct cam_sim *sim;
186 struct timeval last_reset;
187 u_int32_t flags;
188#define CAM_EB_RUNQ_SCHEDULED 0x01
189 u_int32_t refcount;
190 u_int generation;
191};
192
193struct cam_path {
194 struct cam_periph *periph;
195 struct cam_eb *bus;
196 struct cam_et *target;
197 struct cam_ed *device;
198};
199
200struct xpt_quirk_entry {
201 struct scsi_inquiry_pattern inq_pat;
202 u_int8_t quirks;
203#define CAM_QUIRK_NOLUNS 0x01
204#define CAM_QUIRK_NOSERIAL 0x02
205#define CAM_QUIRK_HILUNS 0x04
206#define CAM_QUIRK_NOHILUNS 0x08
207 u_int mintags;
208 u_int maxtags;
209};
210#define CAM_SCSI2_MAXLUN 8
211/*
212 * If we're not quirked to search <= the first 8 luns
213 * and we are either quirked to search above lun 8,
214 * or we're > SCSI-2, we can look for luns above lun 8.
215 */
216#define CAN_SRCH_HI(dv) \
217 (((dv->quirk->quirks & CAM_QUIRK_NOHILUNS) == 0) \
218 && ((dv->quirk->quirks & CAM_QUIRK_HILUNS) \
219 || SID_ANSI_REV(&dv->inq_data) > SCSI_REV_2))
220
221typedef enum {
222 XPT_FLAG_OPEN = 0x01
223} xpt_flags;
224
225struct xpt_softc {
226 xpt_flags flags;
227 u_int32_t generation;
228};
229
230static const char quantum[] = "QUANTUM";
231static const char sony[] = "SONY";
232static const char west_digital[] = "WDIGTL";
233static const char samsung[] = "SAMSUNG";
234static const char seagate[] = "SEAGATE";
235static const char microp[] = "MICROP";
236
237static struct xpt_quirk_entry xpt_quirk_table[] =
238{
239 {
240 /* Reports QUEUE FULL for temporary resource shortages */
241 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP39100*", "*" },
242 /*quirks*/0, /*mintags*/24, /*maxtags*/32
243 },
244 {
245 /* Reports QUEUE FULL for temporary resource shortages */
246 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP34550*", "*" },
247 /*quirks*/0, /*mintags*/24, /*maxtags*/32
248 },
249 {
250 /* Reports QUEUE FULL for temporary resource shortages */
251 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP32275*", "*" },
252 /*quirks*/0, /*mintags*/24, /*maxtags*/32
253 },
254 {
255 /* Broken tagged queuing drive */
256 { T_DIRECT, SIP_MEDIA_FIXED, microp, "4421-07*", "*" },
257 /*quirks*/0, /*mintags*/0, /*maxtags*/0
258 },
259 {
260 /* Broken tagged queuing drive */
261 { T_DIRECT, SIP_MEDIA_FIXED, "HP", "C372*", "*" },
262 /*quirks*/0, /*mintags*/0, /*maxtags*/0
263 },
264 {
265 /* Broken tagged queuing drive */
266 { T_DIRECT, SIP_MEDIA_FIXED, microp, "3391*", "x43h" },
267 /*quirks*/0, /*mintags*/0, /*maxtags*/0
268 },
269 {
270 /*
271 * Unfortunately, the Quantum Atlas III has the same
272 * problem as the Atlas II drives above.
273 * Reported by: "Johan Granlund" <johan@granlund.nu>
274 *
275 * For future reference, the drive with the problem was:
276 * QUANTUM QM39100TD-SW N1B0
277 *
278 * It's possible that Quantum will fix the problem in later
279 * firmware revisions. If that happens, the quirk entry
280 * will need to be made specific to the firmware revisions
281 * with the problem.
282 *
283 */
284 /* Reports QUEUE FULL for temporary resource shortages */
285 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "QM39100*", "*" },
286 /*quirks*/0, /*mintags*/24, /*maxtags*/32
287 },
288 {
289 /*
290 * 18 Gig Atlas III, same problem as the 9G version.
291 * Reported by: Andre Albsmeier
292 * <andre.albsmeier@mchp.siemens.de>
293 *
294 * For future reference, the drive with the problem was:
295 * QUANTUM QM318000TD-S N491
296 */
297 /* Reports QUEUE FULL for temporary resource shortages */
298 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "QM318000*", "*" },
299 /*quirks*/0, /*mintags*/24, /*maxtags*/32
300 },
301 {
302 /*
303 * Broken tagged queuing drive
304 * Reported by: Bret Ford <bford@uop.cs.uop.edu>
305 * and: Martin Renters <martin@tdc.on.ca>
306 */
307 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST410800*", "71*" },
308 /*quirks*/0, /*mintags*/0, /*maxtags*/0
309 },
310 /*
311 * The Seagate Medalist Pro drives have very poor write
312 * performance with anything more than 2 tags.
313 *
314 * Reported by: Paul van der Zwan <paulz@trantor.xs4all.nl>
315 * Drive: <SEAGATE ST36530N 1444>
316 *
317 * Reported by: Jeremy Lea <reg@shale.csir.co.za>
318 * Drive: <SEAGATE ST34520W 1281>
319 *
320 * No one has actually reported that the 9G version
321 * (ST39140*) of the Medalist Pro has the same problem, but
322 * we're assuming that it does because the 4G and 6.5G
323 * versions of the drive are broken.
324 */
325 {
326 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST34520*", "*"},
327 /*quirks*/0, /*mintags*/2, /*maxtags*/2
328 },
329 {
330 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST36530*", "*"},
331 /*quirks*/0, /*mintags*/2, /*maxtags*/2
332 },
333 {
334 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST39140*", "*"},
335 /*quirks*/0, /*mintags*/2, /*maxtags*/2
336 },
337 {
338 /*
339 * Slow when tagged queueing is enabled. Write performance
340 * steadily drops off with more and more concurrent
341 * transactions. Best sequential write performance with
342 * tagged queueing turned off and write caching turned on.
343 *
344 * PR: kern/10398
345 * Submitted by: Hideaki Okada <hokada@isl.melco.co.jp>
346 * Drive: DCAS-34330 w/ "S65A" firmware.
347 *
348 * The drive with the problem had the "S65A" firmware
349 * revision, and has also been reported (by Stephen J.
350 * Roznowski <sjr@home.net>) for a drive with the "S61A"
351 * firmware revision.
352 *
353 * Although no one has reported problems with the 2 gig
354 * version of the DCAS drive, the assumption is that it
355 * has the same problems as the 4 gig version. Therefore
356 * this quirk entries disables tagged queueing for all
357 * DCAS drives.
358 */
359 { T_DIRECT, SIP_MEDIA_FIXED, "IBM", "DCAS*", "*" },
360 /*quirks*/0, /*mintags*/0, /*maxtags*/0
361 },
362 {
363 /* Broken tagged queuing drive */
364 { T_DIRECT, SIP_MEDIA_REMOVABLE, "iomega", "jaz*", "*" },
365 /*quirks*/0, /*mintags*/0, /*maxtags*/0
366 },
367 {
368 /* Broken tagged queuing drive */
369 { T_DIRECT, SIP_MEDIA_FIXED, "CONNER", "CFP2107*", "*" },
370 /*quirks*/0, /*mintags*/0, /*maxtags*/0
371 },
372 {
373 /*
374 * Broken tagged queuing drive.
375 * Submitted by:
376 * NAKAJI Hiroyuki <nakaji@zeisei.dpri.kyoto-u.ac.jp>
377 * in PR kern/9535
378 */
379 { T_DIRECT, SIP_MEDIA_FIXED, samsung, "WN34324U*", "*" },
380 /*quirks*/0, /*mintags*/0, /*maxtags*/0
381 },
382 {
383 /*
384 * Slow when tagged queueing is enabled. (1.5MB/sec versus
385 * 8MB/sec.)
386 * Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
387 * Best performance with these drives is achieved with
388 * tagged queueing turned off, and write caching turned on.
389 */
390 { T_DIRECT, SIP_MEDIA_FIXED, west_digital, "WDE*", "*" },
391 /*quirks*/0, /*mintags*/0, /*maxtags*/0
392 },
393 {
394 /*
395 * Slow when tagged queueing is enabled. (1.5MB/sec versus
396 * 8MB/sec.)
397 * Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
398 * Best performance with these drives is achieved with
399 * tagged queueing turned off, and write caching turned on.
400 */
401 { T_DIRECT, SIP_MEDIA_FIXED, west_digital, "ENTERPRISE", "*" },
402 /*quirks*/0, /*mintags*/0, /*maxtags*/0
403 },
404 {
405 /*
406 * Doesn't handle queue full condition correctly,
407 * so we need to limit maxtags to what the device
408 * can handle instead of determining this automatically.
409 */
410 { T_DIRECT, SIP_MEDIA_FIXED, samsung, "WN321010S*", "*" },
411 /*quirks*/0, /*mintags*/2, /*maxtags*/32
412 },
413 {
414 /* Really only one LUN */
415 { T_ENCLOSURE, SIP_MEDIA_FIXED, "SUN", "SENA", "*" },
416 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
417 },
418 {
419 /* I can't believe we need a quirk for DPT volumes. */
420 { T_ANY, SIP_MEDIA_FIXED|SIP_MEDIA_REMOVABLE, "DPT", "*", "*" },
421 CAM_QUIRK_NOSERIAL|CAM_QUIRK_NOLUNS,
422 /*mintags*/0, /*maxtags*/255
423 },
424 {
425 /*
426 * Many Sony CDROM drives don't like multi-LUN probing.
427 */
428 { T_CDROM, SIP_MEDIA_REMOVABLE, sony, "CD-ROM CDU*", "*" },
429 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
430 },
431 {
432 /*
433 * This drive doesn't like multiple LUN probing.
434 * Submitted by: Parag Patel <parag@cgt.com>
435 */
436 { T_WORM, SIP_MEDIA_REMOVABLE, sony, "CD-R CDU9*", "*" },
437 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
438 },
439 {
440 { T_WORM, SIP_MEDIA_REMOVABLE, "YAMAHA", "CDR100*", "*" },
441 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
442 },
443 {
444 /*
445 * The 8200 doesn't like multi-lun probing, and probably
446 * don't like serial number requests either.
447 */
448 {
449 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "EXABYTE",
450 "EXB-8200*", "*"
451 },
452 CAM_QUIRK_NOSERIAL|CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
453 },
454 {
455 /*
456 * Let's try the same as above, but for a drive that says
457 * it's an IPL-6860 but is actually an EXB 8200.
458 */
459 {
460 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "EXABYTE",
461 "IPL-6860*", "*"
462 },
463 CAM_QUIRK_NOSERIAL|CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
464 },
465 {
466 /*
467 * These Hitachi drives don't like multi-lun probing.
468 * The PR submitter has a DK319H, but says that the Linux
469 * kernel has a similar work-around for the DK312 and DK314,
470 * so all DK31* drives are quirked here.
471 * PR: misc/18793
472 * Submitted by: Paul Haddad <paul@pth.com>
473 */
474 { T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "DK31*", "*" },
475 CAM_QUIRK_NOLUNS, /*mintags*/2, /*maxtags*/255
476 },
477 {
478 /*
479 * The Hitachi CJ series with J8A8 firmware apparantly has
480 * problems with tagged commands.
481 * PR: 23536
482 * Reported by: amagai@nue.org
483 */
484 { T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "DK32CJ*", "J8A8" },
485 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
486 },
487 {
488 /*
489 * These are the large storage arrays.
490 * Submitted by: William Carrel <william.carrel@infospace.com>
491 */
492 { T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "OPEN*", "*" },
493 CAM_QUIRK_HILUNS, 2, 1024
494 },
495 {
496 /*
497 * This old revision of the TDC3600 is also SCSI-1, and
498 * hangs upon serial number probing.
499 */
500 {
501 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
502 " TDC 3600", "U07:"
503 },
504 CAM_QUIRK_NOSERIAL, /*mintags*/0, /*maxtags*/0
505 },
506 {
507 /*
508 * Maxtor Personal Storage 3000XT (Firewire)
509 * hangs upon serial number probing.
510 */
511 {
512 T_DIRECT, SIP_MEDIA_FIXED, "Maxtor",
513 "1394 storage", "*"
514 },
515 CAM_QUIRK_NOSERIAL, /*mintags*/0, /*maxtags*/0
516 },
517 {
518 /*
519 * Would repond to all LUNs if asked for.
520 */
521 {
522 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "CALIPER",
523 "CP150", "*"
524 },
525 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
526 },
527 {
528 /*
529 * Would repond to all LUNs if asked for.
530 */
531 {
532 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY",
533 "96X2*", "*"
534 },
535 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
536 },
537 {
538 /* Submitted by: Matthew Dodd <winter@jurai.net> */
539 { T_PROCESSOR, SIP_MEDIA_FIXED, "Cabletrn", "EA41*", "*" },
540 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
541 },
542 {
543 /* Submitted by: Matthew Dodd <winter@jurai.net> */
544 { T_PROCESSOR, SIP_MEDIA_FIXED, "CABLETRN", "EA41*", "*" },
545 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
546 },
547 {
548 /* TeraSolutions special settings for TRC-22 RAID */
549 { T_DIRECT, SIP_MEDIA_FIXED, "TERASOLU", "TRC-22", "*" },
550 /*quirks*/0, /*mintags*/55, /*maxtags*/255
551 },
552 {
553 /* Veritas Storage Appliance */
554 { T_DIRECT, SIP_MEDIA_FIXED, "VERITAS", "*", "*" },
555 CAM_QUIRK_HILUNS, /*mintags*/2, /*maxtags*/1024
556 },
557 {
558 /*
559 * Would respond to all LUNs. Device type and removable
560 * flag are jumper-selectable.
561 */
562 { T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED, "MaxOptix",
563 "Tahiti 1", "*"
564 },
565 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
566 },
567 {
568 /* EasyRAID E5A aka. areca ARC-6010 */
569 { T_DIRECT, SIP_MEDIA_FIXED, "easyRAID", "*", "*" },
570 CAM_QUIRK_NOHILUNS, /*mintags*/2, /*maxtags*/255
571 },
572 {
573 /* Default tagged queuing parameters for all devices */
574 {
575 T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED,
576 /*vendor*/"*", /*product*/"*", /*revision*/"*"
577 },
578 /*quirks*/0, /*mintags*/2, /*maxtags*/255
579 },
580};
581
582static const int xpt_quirk_table_size =
583 sizeof(xpt_quirk_table) / sizeof(*xpt_quirk_table);
584
585typedef enum {
586 DM_RET_COPY = 0x01,
587 DM_RET_FLAG_MASK = 0x0f,
588 DM_RET_NONE = 0x00,
589 DM_RET_STOP = 0x10,
590 DM_RET_DESCEND = 0x20,
591 DM_RET_ERROR = 0x30,
592 DM_RET_ACTION_MASK = 0xf0
593} dev_match_ret;
594
595typedef enum {
596 XPT_DEPTH_BUS,
597 XPT_DEPTH_TARGET,
598 XPT_DEPTH_DEVICE,
599 XPT_DEPTH_PERIPH
600} xpt_traverse_depth;
601
602struct xpt_traverse_config {
603 xpt_traverse_depth depth;
604 void *tr_func;
605 void *tr_arg;
606};
607
608typedef int xpt_busfunc_t (struct cam_eb *bus, void *arg);
609typedef int xpt_targetfunc_t (struct cam_et *target, void *arg);
610typedef int xpt_devicefunc_t (struct cam_ed *device, void *arg);
611typedef int xpt_periphfunc_t (struct cam_periph *periph, void *arg);
612typedef int xpt_pdrvfunc_t (struct periph_driver **pdrv, void *arg);
613
614/* Transport layer configuration information */
615static struct xpt_softc xsoftc;
616
617/* Queues for our software interrupt handler */
618typedef TAILQ_HEAD(cam_isrq, ccb_hdr) cam_isrq_t;
619static cam_isrq_t cam_bioq;
620static struct mtx cam_bioq_lock;
621
622/* "Pool" of inactive ccbs managed by xpt_alloc_ccb and xpt_free_ccb */
623static SLIST_HEAD(,ccb_hdr) ccb_freeq;
624static u_int xpt_max_ccbs; /*
625 * Maximum size of ccb pool. Modified as
626 * devices are added/removed or have their
627 * opening counts changed.
628 */
629static u_int xpt_ccb_count; /* Current count of allocated ccbs */
630
631struct cam_periph *xpt_periph;
632
633static periph_init_t xpt_periph_init;
634
635static periph_init_t probe_periph_init;
636
637static struct periph_driver xpt_driver =
638{
639 xpt_periph_init, "xpt",
640 TAILQ_HEAD_INITIALIZER(xpt_driver.units)
641};
642
643static struct periph_driver probe_driver =
644{
645 probe_periph_init, "probe",
646 TAILQ_HEAD_INITIALIZER(probe_driver.units)
647};
648
649PERIPHDRIVER_DECLARE(xpt, xpt_driver);
650PERIPHDRIVER_DECLARE(probe, probe_driver);
651
652
653static d_open_t xptopen;
654static d_close_t xptclose;
655static d_ioctl_t xptioctl;
656
657static struct cdevsw xpt_cdevsw = {
658 .d_version = D_VERSION,
659 .d_flags = D_NEEDGIANT,
660 .d_open = xptopen,
661 .d_close = xptclose,
662 .d_ioctl = xptioctl,
663 .d_name = "xpt",
664};
665
666static struct intr_config_hook *xpt_config_hook;
667
668/* Registered busses */
669static TAILQ_HEAD(,cam_eb) xpt_busses;
670static u_int bus_generation;
671
672/* Storage for debugging datastructures */
673#ifdef CAMDEBUG
674struct cam_path *cam_dpath;
675u_int32_t cam_dflags;
676u_int32_t cam_debug_delay;
677#endif
678
679/* Pointers to software interrupt handlers */
680static void *cambio_ih;
681
682#if defined(CAM_DEBUG_FLAGS) && !defined(CAMDEBUG)
683#error "You must have options CAMDEBUG to use options CAM_DEBUG_FLAGS"
684#endif
685
686/*
687 * In order to enable the CAM_DEBUG_* options, the user must have CAMDEBUG
688 * enabled. Also, the user must have either none, or all of CAM_DEBUG_BUS,
689 * CAM_DEBUG_TARGET, and CAM_DEBUG_LUN specified.
690 */
691#if defined(CAM_DEBUG_BUS) || defined(CAM_DEBUG_TARGET) \
692 || defined(CAM_DEBUG_LUN)
693#ifdef CAMDEBUG
694#if !defined(CAM_DEBUG_BUS) || !defined(CAM_DEBUG_TARGET) \
695 || !defined(CAM_DEBUG_LUN)
696#error "You must define all or none of CAM_DEBUG_BUS, CAM_DEBUG_TARGET \
697 and CAM_DEBUG_LUN"
698#endif /* !CAM_DEBUG_BUS || !CAM_DEBUG_TARGET || !CAM_DEBUG_LUN */
699#else /* !CAMDEBUG */
700#error "You must use options CAMDEBUG if you use the CAM_DEBUG_* options"
701#endif /* CAMDEBUG */
702#endif /* CAM_DEBUG_BUS || CAM_DEBUG_TARGET || CAM_DEBUG_LUN */
703
704/* Our boot-time initialization hook */
705static int cam_module_event_handler(module_t, int /*modeventtype_t*/, void *);
706
707static moduledata_t cam_moduledata = {
708 "cam",
709 cam_module_event_handler,
710 NULL
711};
712
713static void xpt_init(void *);
714
715DECLARE_MODULE(cam, cam_moduledata, SI_SUB_CONFIGURE, SI_ORDER_SECOND);
716MODULE_VERSION(cam, 1);
717
718
719static cam_status xpt_compile_path(struct cam_path *new_path,
720 struct cam_periph *perph,
721 path_id_t path_id,
722 target_id_t target_id,
723 lun_id_t lun_id);
724
725static void xpt_release_path(struct cam_path *path);
726
727static void xpt_async_bcast(struct async_list *async_head,
728 u_int32_t async_code,
729 struct cam_path *path,
730 void *async_arg);
731static void xpt_dev_async(u_int32_t async_code,
732 struct cam_eb *bus,
733 struct cam_et *target,
734 struct cam_ed *device,
735 void *async_arg);
736static path_id_t xptnextfreepathid(void);
737static path_id_t xptpathid(const char *sim_name, int sim_unit, int sim_bus);
738static union ccb *xpt_get_ccb(struct cam_ed *device);
739static int xpt_schedule_dev(struct camq *queue, cam_pinfo *dev_pinfo,
740 u_int32_t new_priority);
741static void xpt_run_dev_allocq(struct cam_eb *bus);
742static void xpt_run_dev_sendq(struct cam_eb *bus);
743static timeout_t xpt_release_devq_timeout;
744static timeout_t xpt_release_simq_timeout;
745static void xpt_release_bus(struct cam_eb *bus);
746static void xpt_release_devq_device(struct cam_ed *dev, u_int count,
747 int run_queue);
748static struct cam_et*
749 xpt_alloc_target(struct cam_eb *bus, target_id_t target_id);
750static void xpt_release_target(struct cam_eb *bus, struct cam_et *target);
751static struct cam_ed*
752 xpt_alloc_device(struct cam_eb *bus, struct cam_et *target,
753 lun_id_t lun_id);
754static void xpt_release_device(struct cam_eb *bus, struct cam_et *target,
755 struct cam_ed *device);
756static u_int32_t xpt_dev_ccbq_resize(struct cam_path *path, int newopenings);
757static struct cam_eb*
758 xpt_find_bus(path_id_t path_id);
759static struct cam_et*
760 xpt_find_target(struct cam_eb *bus, target_id_t target_id);
761static struct cam_ed*
762 xpt_find_device(struct cam_et *target, lun_id_t lun_id);
763static void xpt_scan_bus(struct cam_periph *periph, union ccb *ccb);
764static void xpt_scan_lun(struct cam_periph *periph,
765 struct cam_path *path, cam_flags flags,
766 union ccb *ccb);
767static void xptscandone(struct cam_periph *periph, union ccb *done_ccb);
768static xpt_busfunc_t xptconfigbuscountfunc;
769static xpt_busfunc_t xptconfigfunc;
770static void xpt_config(void *arg);
771static xpt_devicefunc_t xptpassannouncefunc;
772static void xpt_finishconfig(struct cam_periph *periph, union ccb *ccb);
773static void xptaction(struct cam_sim *sim, union ccb *work_ccb);
774static void xptpoll(struct cam_sim *sim);
775static void camisr(void *);
776#if 0
777static void xptstart(struct cam_periph *periph, union ccb *work_ccb);
778static void xptasync(struct cam_periph *periph,
779 u_int32_t code, cam_path *path);
780#endif
781static dev_match_ret xptbusmatch(struct dev_match_pattern *patterns,
782 u_int num_patterns, struct cam_eb *bus);
783static dev_match_ret xptdevicematch(struct dev_match_pattern *patterns,
784 u_int num_patterns,
785 struct cam_ed *device);
786static dev_match_ret xptperiphmatch(struct dev_match_pattern *patterns,
787 u_int num_patterns,
788 struct cam_periph *periph);
789static xpt_busfunc_t xptedtbusfunc;
790static xpt_targetfunc_t xptedttargetfunc;
791static xpt_devicefunc_t xptedtdevicefunc;
792static xpt_periphfunc_t xptedtperiphfunc;
793static xpt_pdrvfunc_t xptplistpdrvfunc;
794static xpt_periphfunc_t xptplistperiphfunc;
795static int xptedtmatch(struct ccb_dev_match *cdm);
796static int xptperiphlistmatch(struct ccb_dev_match *cdm);
797static int xptbustraverse(struct cam_eb *start_bus,
798 xpt_busfunc_t *tr_func, void *arg);
799static int xpttargettraverse(struct cam_eb *bus,
800 struct cam_et *start_target,
801 xpt_targetfunc_t *tr_func, void *arg);
802static int xptdevicetraverse(struct cam_et *target,
803 struct cam_ed *start_device,
804 xpt_devicefunc_t *tr_func, void *arg);
805static int xptperiphtraverse(struct cam_ed *device,
806 struct cam_periph *start_periph,
807 xpt_periphfunc_t *tr_func, void *arg);
808static int xptpdrvtraverse(struct periph_driver **start_pdrv,
809 xpt_pdrvfunc_t *tr_func, void *arg);
810static int xptpdperiphtraverse(struct periph_driver **pdrv,
811 struct cam_periph *start_periph,
812 xpt_periphfunc_t *tr_func,
813 void *arg);
814static xpt_busfunc_t xptdefbusfunc;
815static xpt_targetfunc_t xptdeftargetfunc;
816static xpt_devicefunc_t xptdefdevicefunc;
817static xpt_periphfunc_t xptdefperiphfunc;
818static int xpt_for_all_busses(xpt_busfunc_t *tr_func, void *arg);
819#ifdef notusedyet
820static int xpt_for_all_targets(xpt_targetfunc_t *tr_func,
821 void *arg);
822#endif
823static int xpt_for_all_devices(xpt_devicefunc_t *tr_func,
824 void *arg);
825#ifdef notusedyet
826static int xpt_for_all_periphs(xpt_periphfunc_t *tr_func,
827 void *arg);
828#endif
829static xpt_devicefunc_t xptsetasyncfunc;
830static xpt_busfunc_t xptsetasyncbusfunc;
831static cam_status xptregister(struct cam_periph *periph,
832 void *arg);
833static cam_status proberegister(struct cam_periph *periph,
834 void *arg);
835static void probeschedule(struct cam_periph *probe_periph);
836static void probestart(struct cam_periph *periph, union ccb *start_ccb);
837static void proberequestdefaultnegotiation(struct cam_periph *periph);
838static void probedone(struct cam_periph *periph, union ccb *done_ccb);
839static void probecleanup(struct cam_periph *periph);
840static void xpt_find_quirk(struct cam_ed *device);
841#ifdef CAM_NEW_TRAN_CODE
842static void xpt_devise_transport(struct cam_path *path);
843#endif /* CAM_NEW_TRAN_CODE */
844static void xpt_set_transfer_settings(struct ccb_trans_settings *cts,
845 struct cam_ed *device,
846 int async_update);
847static void xpt_toggle_tags(struct cam_path *path);
848static void xpt_start_tags(struct cam_path *path);
849static __inline int xpt_schedule_dev_allocq(struct cam_eb *bus,
850 struct cam_ed *dev);
851static __inline int xpt_schedule_dev_sendq(struct cam_eb *bus,
852 struct cam_ed *dev);
853static __inline int periph_is_queued(struct cam_periph *periph);
854static __inline int device_is_alloc_queued(struct cam_ed *device);
855static __inline int device_is_send_queued(struct cam_ed *device);
856static __inline int dev_allocq_is_runnable(struct cam_devq *devq);
857
858static __inline int
859xpt_schedule_dev_allocq(struct cam_eb *bus, struct cam_ed *dev)
860{
861 int retval;
862
863 if (dev->ccbq.devq_openings > 0) {
864 if ((dev->flags & CAM_DEV_RESIZE_QUEUE_NEEDED) != 0) {
865 cam_ccbq_resize(&dev->ccbq,
866 dev->ccbq.dev_openings
867 + dev->ccbq.dev_active);
868 dev->flags &= ~CAM_DEV_RESIZE_QUEUE_NEEDED;
869 }
870 /*
871 * The priority of a device waiting for CCB resources
872 * is that of the the highest priority peripheral driver
873 * enqueued.
874 */
875 retval = xpt_schedule_dev(&bus->sim->devq->alloc_queue,
876 &dev->alloc_ccb_entry.pinfo,
877 CAMQ_GET_HEAD(&dev->drvq)->priority);
878 } else {
879 retval = 0;
880 }
881
882 return (retval);
883}
884
885static __inline int
886xpt_schedule_dev_sendq(struct cam_eb *bus, struct cam_ed *dev)
887{
888 int retval;
889
890 if (dev->ccbq.dev_openings > 0) {
891 /*
892 * The priority of a device waiting for controller
893 * resources is that of the the highest priority CCB
894 * enqueued.
895 */
896 retval =
897 xpt_schedule_dev(&bus->sim->devq->send_queue,
898 &dev->send_ccb_entry.pinfo,
899 CAMQ_GET_HEAD(&dev->ccbq.queue)->priority);
900 } else {
901 retval = 0;
902 }
903 return (retval);
904}
905
906static __inline int
907periph_is_queued(struct cam_periph *periph)
908{
909 return (periph->pinfo.index != CAM_UNQUEUED_INDEX);
910}
911
912static __inline int
913device_is_alloc_queued(struct cam_ed *device)
914{
915 return (device->alloc_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX);
916}
917
918static __inline int
919device_is_send_queued(struct cam_ed *device)
920{
921 return (device->send_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX);
922}
923
924static __inline int
925dev_allocq_is_runnable(struct cam_devq *devq)
926{
927 /*
928 * Have work to do.
929 * Have space to do more work.
930 * Allowed to do work.
931 */
932 return ((devq->alloc_queue.qfrozen_cnt == 0)
933 && (devq->alloc_queue.entries > 0)
934 && (devq->alloc_openings > 0));
935}
936
937static void
938xpt_periph_init()
939{
940 make_dev(&xpt_cdevsw, 0, UID_ROOT, GID_OPERATOR, 0600, "xpt0");
941}
942
943static void
944probe_periph_init()
945{
946}
947
948
949static void
950xptdone(struct cam_periph *periph, union ccb *done_ccb)
951{
952 /* Caller will release the CCB */
953 wakeup(&done_ccb->ccb_h.cbfcnp);
954}
955
956static int
957xptopen(struct cdev *dev, int flags, int fmt, struct thread *td)
958{
959 int unit;
960
961 unit = minor(dev) & 0xff;
962
963 /*
964 * Only allow read-write access.
965 */
966 if (((flags & FWRITE) == 0) || ((flags & FREAD) == 0))
967 return(EPERM);
968
969 /*
970 * We don't allow nonblocking access.
971 */
972 if ((flags & O_NONBLOCK) != 0) {
973 printf("xpt%d: can't do nonblocking access\n", unit);
974 return(ENODEV);
975 }
976
977 /*
978 * We only have one transport layer right now. If someone accesses
979 * us via something other than minor number 1, point out their
980 * mistake.
981 */
982 if (unit != 0) {
983 printf("xptopen: got invalid xpt unit %d\n", unit);
984 return(ENXIO);
985 }
986
987 /* Mark ourselves open */
988 xsoftc.flags |= XPT_FLAG_OPEN;
989
990 return(0);
991}
992
993static int
994xptclose(struct cdev *dev, int flag, int fmt, struct thread *td)
995{
996 int unit;
997
998 unit = minor(dev) & 0xff;
999
1000 /*
1001 * We only have one transport layer right now. If someone accesses
1002 * us via something other than minor number 1, point out their
1003 * mistake.
1004 */
1005 if (unit != 0) {
1006 printf("xptclose: got invalid xpt unit %d\n", unit);
1007 return(ENXIO);
1008 }
1009
1010 /* Mark ourselves closed */
1011 xsoftc.flags &= ~XPT_FLAG_OPEN;
1012
1013 return(0);
1014}
1015
1016static int
1017xptioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td)
1018{
1019 int unit, error;
1020
1021 error = 0;
1022 unit = minor(dev) & 0xff;
1023
1024 /*
1025 * We only have one transport layer right now. If someone accesses
1026 * us via something other than minor number 1, point out their
1027 * mistake.
1028 */
1029 if (unit != 0) {
1030 printf("xptioctl: got invalid xpt unit %d\n", unit);
1031 return(ENXIO);
1032 }
1033
1034 switch(cmd) {
1035 /*
1036 * For the transport layer CAMIOCOMMAND ioctl, we really only want
1037 * to accept CCB types that don't quite make sense to send through a
1038 * passthrough driver. XPT_PATH_INQ is an exception to this, as stated
1039 * in the CAM spec.
1040 */
1041 case CAMIOCOMMAND: {
1042 union ccb *ccb;
1043 union ccb *inccb;
1044
1045 inccb = (union ccb *)addr;
1046
1047 switch(inccb->ccb_h.func_code) {
1048 case XPT_SCAN_BUS:
1049 case XPT_RESET_BUS:
1050 if ((inccb->ccb_h.target_id != CAM_TARGET_WILDCARD)
1051 || (inccb->ccb_h.target_lun != CAM_LUN_WILDCARD)) {
1052 error = EINVAL;
1053 break;
1054 }
1055 /* FALLTHROUGH */
1056 case XPT_PATH_INQ:
1057 case XPT_ENG_INQ:
1058 case XPT_SCAN_LUN:
1059
1060 ccb = xpt_alloc_ccb();
1061
1062 /*
1063 * Create a path using the bus, target, and lun the
1064 * user passed in.
1065 */
1066 if (xpt_create_path(&ccb->ccb_h.path, xpt_periph,
1067 inccb->ccb_h.path_id,
1068 inccb->ccb_h.target_id,
1069 inccb->ccb_h.target_lun) !=
1070 CAM_REQ_CMP){
1071 error = EINVAL;
1072 xpt_free_ccb(ccb);
1073 break;
1074 }
1075 /* Ensure all of our fields are correct */
1076 xpt_setup_ccb(&ccb->ccb_h, ccb->ccb_h.path,
1077 inccb->ccb_h.pinfo.priority);
1078 xpt_merge_ccb(ccb, inccb);
1079 ccb->ccb_h.cbfcnp = xptdone;
1080 cam_periph_runccb(ccb, NULL, 0, 0, NULL);
1081 bcopy(ccb, inccb, sizeof(union ccb));
1082 xpt_free_path(ccb->ccb_h.path);
1083 xpt_free_ccb(ccb);
1084 break;
1085
1086 case XPT_DEBUG: {
1087 union ccb ccb;
1088
1089 /*
1090 * This is an immediate CCB, so it's okay to
1091 * allocate it on the stack.
1092 */
1093
1094 /*
1095 * Create a path using the bus, target, and lun the
1096 * user passed in.
1097 */
1098 if (xpt_create_path(&ccb.ccb_h.path, xpt_periph,
1099 inccb->ccb_h.path_id,
1100 inccb->ccb_h.target_id,
1101 inccb->ccb_h.target_lun) !=
1102 CAM_REQ_CMP){
1103 error = EINVAL;
1104 break;
1105 }
1106 /* Ensure all of our fields are correct */
1107 xpt_setup_ccb(&ccb.ccb_h, ccb.ccb_h.path,
1108 inccb->ccb_h.pinfo.priority);
1109 xpt_merge_ccb(&ccb, inccb);
1110 ccb.ccb_h.cbfcnp = xptdone;
1111 xpt_action(&ccb);
1112 bcopy(&ccb, inccb, sizeof(union ccb));
1113 xpt_free_path(ccb.ccb_h.path);
1114 break;
1115
1116 }
1117 case XPT_DEV_MATCH: {
1118 struct cam_periph_map_info mapinfo;
1119 struct cam_path *old_path;
1120
1121 /*
1122 * We can't deal with physical addresses for this
1123 * type of transaction.
1124 */
1125 if (inccb->ccb_h.flags & CAM_DATA_PHYS) {
1126 error = EINVAL;
1127 break;
1128 }
1129
1130 /*
1131 * Save this in case the caller had it set to
1132 * something in particular.
1133 */
1134 old_path = inccb->ccb_h.path;
1135
1136 /*
1137 * We really don't need a path for the matching
1138 * code. The path is needed because of the
1139 * debugging statements in xpt_action(). They
1140 * assume that the CCB has a valid path.
1141 */
1142 inccb->ccb_h.path = xpt_periph->path;
1143
1144 bzero(&mapinfo, sizeof(mapinfo));
1145
1146 /*
1147 * Map the pattern and match buffers into kernel
1148 * virtual address space.
1149 */
1150 error = cam_periph_mapmem(inccb, &mapinfo);
1151
1152 if (error) {
1153 inccb->ccb_h.path = old_path;
1154 break;
1155 }
1156
1157 /*
1158 * This is an immediate CCB, we can send it on directly.
1159 */
1160 xpt_action(inccb);
1161
1162 /*
1163 * Map the buffers back into user space.
1164 */
1165 cam_periph_unmapmem(inccb, &mapinfo);
1166
1167 inccb->ccb_h.path = old_path;
1168
1169 error = 0;
1170 break;
1171 }
1172 default:
1173 error = ENOTSUP;
1174 break;
1175 }
1176 break;
1177 }
1178 /*
1179 * This is the getpassthru ioctl. It takes a XPT_GDEVLIST ccb as input,
1180 * with the periphal driver name and unit name filled in. The other
1181 * fields don't really matter as input. The passthrough driver name
1182 * ("pass"), and unit number are passed back in the ccb. The current
1183 * device generation number, and the index into the device peripheral
1184 * driver list, and the status are also passed back. Note that
1185 * since we do everything in one pass, unlike the XPT_GDEVLIST ccb,
1186 * we never return a status of CAM_GDEVLIST_LIST_CHANGED. It is
1187 * (or rather should be) impossible for the device peripheral driver
1188 * list to change since we look at the whole thing in one pass, and
1189 * we do it with splcam protection.
1190 *
1191 */
1192 case CAMGETPASSTHRU: {
1193 union ccb *ccb;
1194 struct cam_periph *periph;
1195 struct periph_driver **p_drv;
1196 char *name;
1197 u_int unit;
1198 u_int cur_generation;
1199 int base_periph_found;
1200 int splbreaknum;
1201 int s;
1202
1203 ccb = (union ccb *)addr;
1204 unit = ccb->cgdl.unit_number;
1205 name = ccb->cgdl.periph_name;
1206 /*
1207 * Every 100 devices, we want to drop our spl protection to
1208 * give the software interrupt handler a chance to run.
1209 * Most systems won't run into this check, but this should
1210 * avoid starvation in the software interrupt handler in
1211 * large systems.
1212 */
1213 splbreaknum = 100;
1214
1215 ccb = (union ccb *)addr;
1216
1217 base_periph_found = 0;
1218
1219 /*
1220 * Sanity check -- make sure we don't get a null peripheral
1221 * driver name.
1222 */
1223 if (*ccb->cgdl.periph_name == '\0') {
1224 error = EINVAL;
1225 break;
1226 }
1227
1228 /* Keep the list from changing while we traverse it */
1229 s = splcam();
1230ptstartover:
1231 cur_generation = xsoftc.generation;
1232
1233 /* first find our driver in the list of drivers */
1234 for (p_drv = periph_drivers; *p_drv != NULL; p_drv++)
1235 if (strcmp((*p_drv)->driver_name, name) == 0)
1236 break;
1237
1238 if (*p_drv == NULL) {
1239 splx(s);
1240 ccb->ccb_h.status = CAM_REQ_CMP_ERR;
1241 ccb->cgdl.status = CAM_GDEVLIST_ERROR;
1242 *ccb->cgdl.periph_name = '\0';
1243 ccb->cgdl.unit_number = 0;
1244 error = ENOENT;
1245 break;
1246 }
1247
1248 /*
1249 * Run through every peripheral instance of this driver
1250 * and check to see whether it matches the unit passed
1251 * in by the user. If it does, get out of the loops and
1252 * find the passthrough driver associated with that
1253 * peripheral driver.
1254 */
1255 for (periph = TAILQ_FIRST(&(*p_drv)->units); periph != NULL;
1256 periph = TAILQ_NEXT(periph, unit_links)) {
1257
1258 if (periph->unit_number == unit) {
1259 break;
1260 } else if (--splbreaknum == 0) {
1261 splx(s);
1262 s = splcam();
1263 splbreaknum = 100;
1264 if (cur_generation != xsoftc.generation)
1265 goto ptstartover;
1266 }
1267 }
1268 /*
1269 * If we found the peripheral driver that the user passed
1270 * in, go through all of the peripheral drivers for that
1271 * particular device and look for a passthrough driver.
1272 */
1273 if (periph != NULL) {
1274 struct cam_ed *device;
1275 int i;
1276
1277 base_periph_found = 1;
1278 device = periph->path->device;
1279 for (i = 0, periph = SLIST_FIRST(&device->periphs);
1280 periph != NULL;
1281 periph = SLIST_NEXT(periph, periph_links), i++) {
1282 /*
1283 * Check to see whether we have a
1284 * passthrough device or not.
1285 */
1286 if (strcmp(periph->periph_name, "pass") == 0) {
1287 /*
1288 * Fill in the getdevlist fields.
1289 */
1290 strcpy(ccb->cgdl.periph_name,
1291 periph->periph_name);
1292 ccb->cgdl.unit_number =
1293 periph->unit_number;
1294 if (SLIST_NEXT(periph, periph_links))
1295 ccb->cgdl.status =
1296 CAM_GDEVLIST_MORE_DEVS;
1297 else
1298 ccb->cgdl.status =
1299 CAM_GDEVLIST_LAST_DEVICE;
1300 ccb->cgdl.generation =
1301 device->generation;
1302 ccb->cgdl.index = i;
1303 /*
1304 * Fill in some CCB header fields
1305 * that the user may want.
1306 */
1307 ccb->ccb_h.path_id =
1308 periph->path->bus->path_id;
1309 ccb->ccb_h.target_id =
1310 periph->path->target->target_id;
1311 ccb->ccb_h.target_lun =
1312 periph->path->device->lun_id;
1313 ccb->ccb_h.status = CAM_REQ_CMP;
1314 break;
1315 }
1316 }
1317 }
1318
1319 /*
1320 * If the periph is null here, one of two things has
1321 * happened. The first possibility is that we couldn't
1322 * find the unit number of the particular peripheral driver
1323 * that the user is asking about. e.g. the user asks for
1324 * the passthrough driver for "da11". We find the list of
1325 * "da" peripherals all right, but there is no unit 11.
1326 * The other possibility is that we went through the list
1327 * of peripheral drivers attached to the device structure,
1328 * but didn't find one with the name "pass". Either way,
1329 * we return ENOENT, since we couldn't find something.
1330 */
1331 if (periph == NULL) {
1332 ccb->ccb_h.status = CAM_REQ_CMP_ERR;
1333 ccb->cgdl.status = CAM_GDEVLIST_ERROR;
1334 *ccb->cgdl.periph_name = '\0';
1335 ccb->cgdl.unit_number = 0;
1336 error = ENOENT;
1337 /*
1338 * It is unfortunate that this is even necessary,
1339 * but there are many, many clueless users out there.
1340 * If this is true, the user is looking for the
1341 * passthrough driver, but doesn't have one in his
1342 * kernel.
1343 */
1344 if (base_periph_found == 1) {
1345 printf("xptioctl: pass driver is not in the "
1346 "kernel\n");
1347 printf("xptioctl: put \"device pass0\" in "
1348 "your kernel config file\n");
1349 }
1350 }
1351 splx(s);
1352 break;
1353 }
1354 default:
1355 error = ENOTTY;
1356 break;
1357 }
1358
1359 return(error);
1360}
1361
1362static int
1363cam_module_event_handler(module_t mod, int what, void *arg)
1364{
1365 if (what == MOD_LOAD) {
1366 xpt_init(NULL);
1367 } else if (what == MOD_UNLOAD) {
1368 return EBUSY;
1369 } else {
1370 return EOPNOTSUPP;
1371 }
1372
1373 return 0;
1374}
1375
1376/* Functions accessed by the peripheral drivers */
1377static void
1378xpt_init(dummy)
1379 void *dummy;
1380{
1381 struct cam_sim *xpt_sim;
1382 struct cam_path *path;
1383 struct cam_devq *devq;
1384 cam_status status;
1385
1386 TAILQ_INIT(&xpt_busses);
1387 TAILQ_INIT(&cam_bioq);
1388 SLIST_INIT(&ccb_freeq);
1389 STAILQ_INIT(&highpowerq);
1390
1391 mtx_init(&cam_bioq_lock, "CAM BIOQ lock", NULL, MTX_DEF);
1392
1393 /*
1394 * The xpt layer is, itself, the equivelent of a SIM.
1395 * Allow 16 ccbs in the ccb pool for it. This should
1396 * give decent parallelism when we probe busses and
1397 * perform other XPT functions.
1398 */
1399 devq = cam_simq_alloc(16);
1400 xpt_sim = cam_sim_alloc(xptaction,
1401 xptpoll,
1402 "xpt",
1403 /*softc*/NULL,
1404 /*unit*/0,
1405 /*max_dev_transactions*/0,
1406 /*max_tagged_dev_transactions*/0,
1407 devq);
1408 xpt_max_ccbs = 16;
1409
1410 xpt_bus_register(xpt_sim, /*bus #*/0);
1411
1412 /*
1413 * Looking at the XPT from the SIM layer, the XPT is
1414 * the equivelent of a peripheral driver. Allocate
1415 * a peripheral driver entry for us.
1416 */
1417 if ((status = xpt_create_path(&path, NULL, CAM_XPT_PATH_ID,
1418 CAM_TARGET_WILDCARD,
1419 CAM_LUN_WILDCARD)) != CAM_REQ_CMP) {
1420 printf("xpt_init: xpt_create_path failed with status %#x,"
1421 " failing attach\n", status);
1422 return;
1423 }
1424
1425 cam_periph_alloc(xptregister, NULL, NULL, NULL, "xpt", CAM_PERIPH_BIO,
1426 path, NULL, 0, NULL);
1427 xpt_free_path(path);
1428
1429 xpt_sim->softc = xpt_periph;
1430
1431 /*
1432 * Register a callback for when interrupts are enabled.
1433 */
1434 xpt_config_hook =
1435 (struct intr_config_hook *)malloc(sizeof(struct intr_config_hook),
1436 M_TEMP, M_NOWAIT | M_ZERO);
1437 if (xpt_config_hook == NULL) {
1438 printf("xpt_init: Cannot malloc config hook "
1439 "- failing attach\n");
1440 return;
1441 }
1442
1443 xpt_config_hook->ich_func = xpt_config;
1444 if (config_intrhook_establish(xpt_config_hook) != 0) {
1445 free (xpt_config_hook, M_TEMP);
1446 printf("xpt_init: config_intrhook_establish failed "
1447 "- failing attach\n");
1448 }
1449
1450 /* Install our software interrupt handlers */
1451 swi_add(NULL, "cambio", camisr, &cam_bioq, SWI_CAMBIO, 0, &cambio_ih);
1452}
1453
1454static cam_status
1455xptregister(struct cam_periph *periph, void *arg)
1456{
1457 if (periph == NULL) {
1458 printf("xptregister: periph was NULL!!\n");
1459 return(CAM_REQ_CMP_ERR);
1460 }
1461
1462 periph->softc = NULL;
1463
1464 xpt_periph = periph;
1465
1466 return(CAM_REQ_CMP);
1467}
1468
1469int32_t
1470xpt_add_periph(struct cam_periph *periph)
1471{
1472 struct cam_ed *device;
1473 int32_t status;
1474 struct periph_list *periph_head;
1475
1476 GIANT_REQUIRED;
1477
1478 device = periph->path->device;
1479
1480 periph_head = &device->periphs;
1481
1482 status = CAM_REQ_CMP;
1483
1484 if (device != NULL) {
1485 int s;
1486
1487 /*
1488 * Make room for this peripheral
1489 * so it will fit in the queue
1490 * when it's scheduled to run
1491 */
1492 s = splsoftcam();
1493 status = camq_resize(&device->drvq,
1494 device->drvq.array_size + 1);
1495
1496 device->generation++;
1497
1498 SLIST_INSERT_HEAD(periph_head, periph, periph_links);
1499
1500 splx(s);
1501 }
1502
1503 xsoftc.generation++;
1504
1505 return (status);
1506}
1507
1508void
1509xpt_remove_periph(struct cam_periph *periph)
1510{
1511 struct cam_ed *device;
1512
1513 GIANT_REQUIRED;
1514
1515 device = periph->path->device;
1516
1517 if (device != NULL) {
1518 int s;
1519 struct periph_list *periph_head;
1520
1521 periph_head = &device->periphs;
1522
1523 /* Release the slot for this peripheral */
1524 s = splsoftcam();
1525 camq_resize(&device->drvq, device->drvq.array_size - 1);
1526
1527 device->generation++;
1528
1529 SLIST_REMOVE(periph_head, periph, cam_periph, periph_links);
1530
1531 splx(s);
1532 }
1533
1534 xsoftc.generation++;
1535
1536}
1537
1538#ifdef CAM_NEW_TRAN_CODE
1539
1540void
1541xpt_announce_periph(struct cam_periph *periph, char *announce_string)
1542{
1543 struct ccb_pathinq cpi;
1544 struct ccb_trans_settings cts;
1545 struct cam_path *path;
1546 u_int speed;
1547 u_int freq;
1548 u_int mb;
1549 int s;
1550
1551 GIANT_REQUIRED;
1552
1553 path = periph->path;
1554 /*
1555 * To ensure that this is printed in one piece,
1556 * mask out CAM interrupts.
1557 */
1558 s = splsoftcam();
1559 printf("%s%d at %s%d bus %d target %d lun %d\n",
1560 periph->periph_name, periph->unit_number,
1561 path->bus->sim->sim_name,
1562 path->bus->sim->unit_number,
1563 path->bus->sim->bus_id,
1564 path->target->target_id,
1565 path->device->lun_id);
1566 printf("%s%d: ", periph->periph_name, periph->unit_number);
1567 scsi_print_inquiry(&path->device->inq_data);
1568 if (bootverbose && path->device->serial_num_len > 0) {
1569 /* Don't wrap the screen - print only the first 60 chars */
1570 printf("%s%d: Serial Number %.60s\n", periph->periph_name,
1571 periph->unit_number, path->device->serial_num);
1572 }
1573 xpt_setup_ccb(&cts.ccb_h, path, /*priority*/1);
1574 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
1575 cts.type = CTS_TYPE_CURRENT_SETTINGS;
1576 xpt_action((union ccb*)&cts);
1577
1578 /* Ask the SIM for its base transfer speed */
1579 xpt_setup_ccb(&cpi.ccb_h, path, /*priority*/1);
1580 cpi.ccb_h.func_code = XPT_PATH_INQ;
1581 xpt_action((union ccb *)&cpi);
1582
1583 speed = cpi.base_transfer_speed;
1584 freq = 0;
1585 if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_SPI) {
1586 struct ccb_trans_settings_spi *spi;
1587
1588 spi = &cts.xport_specific.spi;
1589 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) != 0
1590 && spi->sync_offset != 0) {
1591 freq = scsi_calc_syncsrate(spi->sync_period);
1592 speed = freq;
1593 }
1594
1595 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0)
1596 speed *= (0x01 << spi->bus_width);
1597 }
1598
1599 if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_FC) {
1600 struct ccb_trans_settings_fc *fc = &cts.xport_specific.fc;
1601 if (fc->valid & CTS_FC_VALID_SPEED) {
1602 speed = fc->bitrate;
1603 }
1604 }
1605
1606 mb = speed / 1000;
1607 if (mb > 0)
1608 printf("%s%d: %d.%03dMB/s transfers",
1609 periph->periph_name, periph->unit_number,
1610 mb, speed % 1000);
1611 else
1612 printf("%s%d: %dKB/s transfers", periph->periph_name,
1613 periph->unit_number, speed);
1614 /* Report additional information about SPI connections */
1615 if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_SPI) {
1616 struct ccb_trans_settings_spi *spi;
1617
1618 spi = &cts.xport_specific.spi;
1619 if (freq != 0) {
1620 printf(" (%d.%03dMHz%s, offset %d", freq / 1000,
1621 freq % 1000,
1622 (spi->ppr_options & MSG_EXT_PPR_DT_REQ) != 0
1623 ? " DT" : "",
1624 spi->sync_offset);
1625 }
1626 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0
1627 && spi->bus_width > 0) {
1628 if (freq != 0) {
1629 printf(", ");
1630 } else {
1631 printf(" (");
1632 }
1633 printf("%dbit)", 8 * (0x01 << spi->bus_width));
1634 } else if (freq != 0) {
1635 printf(")");
1636 }
1637 }
1638 if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_FC) {
1639 struct ccb_trans_settings_fc *fc;
1640
1641 fc = &cts.xport_specific.fc;
1642 if (fc->valid & CTS_FC_VALID_WWNN)
1643 printf(" WWNN 0x%llx", (long long) fc->wwnn);
1644 if (fc->valid & CTS_FC_VALID_WWPN)
1645 printf(" WWPN 0x%llx", (long long) fc->wwpn);
1646 if (fc->valid & CTS_FC_VALID_PORT)
1647 printf(" PortID 0x%x", fc->port);
1648 }
1649
1650 if (path->device->inq_flags & SID_CmdQue
1651 || path->device->flags & CAM_DEV_TAG_AFTER_COUNT) {
1652 printf("\n%s%d: Tagged Queueing Enabled",
1653 periph->periph_name, periph->unit_number);
1654 }
1655 printf("\n");
1656
1657 /*
1658 * We only want to print the caller's announce string if they've
1659 * passed one in..
1660 */
1661 if (announce_string != NULL)
1662 printf("%s%d: %s\n", periph->periph_name,
1663 periph->unit_number, announce_string);
1664 splx(s);
1665}
1666#else /* CAM_NEW_TRAN_CODE */
1667void
1668xpt_announce_periph(struct cam_periph *periph, char *announce_string)
1669{
1670 int s;
1671 u_int mb;
1672 struct cam_path *path;
1673 struct ccb_trans_settings cts;
1674
1675 GIANT_REQUIRED;
1676
1677 path = periph->path;
1678 /*
1679 * To ensure that this is printed in one piece,
1680 * mask out CAM interrupts.
1681 */
1682 s = splsoftcam();
1683 printf("%s%d at %s%d bus %d target %d lun %d\n",
1684 periph->periph_name, periph->unit_number,
1685 path->bus->sim->sim_name,
1686 path->bus->sim->unit_number,
1687 path->bus->sim->bus_id,
1688 path->target->target_id,
1689 path->device->lun_id);
1690 printf("%s%d: ", periph->periph_name, periph->unit_number);
1691 scsi_print_inquiry(&path->device->inq_data);
1692 if ((bootverbose)
1693 && (path->device->serial_num_len > 0)) {
1694 /* Don't wrap the screen - print only the first 60 chars */
1695 printf("%s%d: Serial Number %.60s\n", periph->periph_name,
1696 periph->unit_number, path->device->serial_num);
1697 }
1698 xpt_setup_ccb(&cts.ccb_h, path, /*priority*/1);
1699 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
1700 cts.flags = CCB_TRANS_CURRENT_SETTINGS;
1701 xpt_action((union ccb*)&cts);
1702 if (cts.ccb_h.status == CAM_REQ_CMP) {
1703 u_int speed;
1704 u_int freq;
1705
1706 if ((cts.valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0
1707 && cts.sync_offset != 0) {
1708 freq = scsi_calc_syncsrate(cts.sync_period);
1709 speed = freq;
1710 } else {
1711 struct ccb_pathinq cpi;
1712
1713 /* Ask the SIM for its base transfer speed */
1714 xpt_setup_ccb(&cpi.ccb_h, path, /*priority*/1);
1715 cpi.ccb_h.func_code = XPT_PATH_INQ;
1716 xpt_action((union ccb *)&cpi);
1717
1718 speed = cpi.base_transfer_speed;
1719 freq = 0;
1720 }
1721 if ((cts.valid & CCB_TRANS_BUS_WIDTH_VALID) != 0)
1722 speed *= (0x01 << cts.bus_width);
1723 mb = speed / 1000;
1724 if (mb > 0)
1725 printf("%s%d: %d.%03dMB/s transfers",
1726 periph->periph_name, periph->unit_number,
1727 mb, speed % 1000);
1728 else
1729 printf("%s%d: %dKB/s transfers", periph->periph_name,
1730 periph->unit_number, speed);
1731 if ((cts.valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0
1732 && cts.sync_offset != 0) {
1733 printf(" (%d.%03dMHz, offset %d", freq / 1000,
1734 freq % 1000, cts.sync_offset);
1735 }
1736 if ((cts.valid & CCB_TRANS_BUS_WIDTH_VALID) != 0
1737 && cts.bus_width > 0) {
1738 if ((cts.valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0
1739 && cts.sync_offset != 0) {
1740 printf(", ");
1741 } else {
1742 printf(" (");
1743 }
1744 printf("%dbit)", 8 * (0x01 << cts.bus_width));
1745 } else if ((cts.valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0
1746 && cts.sync_offset != 0) {
1747 printf(")");
1748 }
1749
1750 if (path->device->inq_flags & SID_CmdQue
1751 || path->device->flags & CAM_DEV_TAG_AFTER_COUNT) {
1752 printf(", Tagged Queueing Enabled");
1753 }
1754
1755 printf("\n");
1756 } else if (path->device->inq_flags & SID_CmdQue
1757 || path->device->flags & CAM_DEV_TAG_AFTER_COUNT) {
1758 printf("%s%d: Tagged Queueing Enabled\n",
1759 periph->periph_name, periph->unit_number);
1760 }
1761
1762 /*
1763 * We only want to print the caller's announce string if they've
1764 * passed one in..
1765 */
1766 if (announce_string != NULL)
1767 printf("%s%d: %s\n", periph->periph_name,
1768 periph->unit_number, announce_string);
1769 splx(s);
1770}
1771
1772#endif /* CAM_NEW_TRAN_CODE */
1773
1774static dev_match_ret
1775xptbusmatch(struct dev_match_pattern *patterns, u_int num_patterns,
1776 struct cam_eb *bus)
1777{
1778 dev_match_ret retval;
1779 int i;
1780
1781 retval = DM_RET_NONE;
1782
1783 /*
1784 * If we aren't given something to match against, that's an error.
1785 */
1786 if (bus == NULL)
1787 return(DM_RET_ERROR);
1788
1789 /*
1790 * If there are no match entries, then this bus matches no
1791 * matter what.
1792 */
1793 if ((patterns == NULL) || (num_patterns == 0))
1794 return(DM_RET_DESCEND | DM_RET_COPY);
1795
1796 for (i = 0; i < num_patterns; i++) {
1797 struct bus_match_pattern *cur_pattern;
1798
1799 /*
1800 * If the pattern in question isn't for a bus node, we
1801 * aren't interested. However, we do indicate to the
1802 * calling routine that we should continue descending the
1803 * tree, since the user wants to match against lower-level
1804 * EDT elements.
1805 */
1806 if (patterns[i].type != DEV_MATCH_BUS) {
1807 if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)
1808 retval |= DM_RET_DESCEND;
1809 continue;
1810 }
1811
1812 cur_pattern = &patterns[i].pattern.bus_pattern;
1813
1814 /*
1815 * If they want to match any bus node, we give them any
1816 * device node.
1817 */
1818 if (cur_pattern->flags == BUS_MATCH_ANY) {
1819 /* set the copy flag */
1820 retval |= DM_RET_COPY;
1821
1822 /*
1823 * If we've already decided on an action, go ahead
1824 * and return.
1825 */
1826 if ((retval & DM_RET_ACTION_MASK) != DM_RET_NONE)
1827 return(retval);
1828 }
1829
1830 /*
1831 * Not sure why someone would do this...
1832 */
1833 if (cur_pattern->flags == BUS_MATCH_NONE)
1834 continue;
1835
1836 if (((cur_pattern->flags & BUS_MATCH_PATH) != 0)
1837 && (cur_pattern->path_id != bus->path_id))
1838 continue;
1839
1840 if (((cur_pattern->flags & BUS_MATCH_BUS_ID) != 0)
1841 && (cur_pattern->bus_id != bus->sim->bus_id))
1842 continue;
1843
1844 if (((cur_pattern->flags & BUS_MATCH_UNIT) != 0)
1845 && (cur_pattern->unit_number != bus->sim->unit_number))
1846 continue;
1847
1848 if (((cur_pattern->flags & BUS_MATCH_NAME) != 0)
1849 && (strncmp(cur_pattern->dev_name, bus->sim->sim_name,
1850 DEV_IDLEN) != 0))
1851 continue;
1852
1853 /*
1854 * If we get to this point, the user definitely wants
1855 * information on this bus. So tell the caller to copy the
1856 * data out.
1857 */
1858 retval |= DM_RET_COPY;
1859
1860 /*
1861 * If the return action has been set to descend, then we
1862 * know that we've already seen a non-bus matching
1863 * expression, therefore we need to further descend the tree.
1864 * This won't change by continuing around the loop, so we
1865 * go ahead and return. If we haven't seen a non-bus
1866 * matching expression, we keep going around the loop until
1867 * we exhaust the matching expressions. We'll set the stop
1868 * flag once we fall out of the loop.
1869 */
1870 if ((retval & DM_RET_ACTION_MASK) == DM_RET_DESCEND)
1871 return(retval);
1872 }
1873
1874 /*
1875 * If the return action hasn't been set to descend yet, that means
1876 * we haven't seen anything other than bus matching patterns. So
1877 * tell the caller to stop descending the tree -- the user doesn't
1878 * want to match against lower level tree elements.
1879 */
1880 if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)
1881 retval |= DM_RET_STOP;
1882
1883 return(retval);
1884}
1885
1886static dev_match_ret
1887xptdevicematch(struct dev_match_pattern *patterns, u_int num_patterns,
1888 struct cam_ed *device)
1889{
1890 dev_match_ret retval;
1891 int i;
1892
1893 retval = DM_RET_NONE;
1894
1895 /*
1896 * If we aren't given something to match against, that's an error.
1897 */
1898 if (device == NULL)
1899 return(DM_RET_ERROR);
1900
1901 /*
1902 * If there are no match entries, then this device matches no
1903 * matter what.
1904 */
1905 if ((patterns == NULL) || (num_patterns == 0))
1906 return(DM_RET_DESCEND | DM_RET_COPY);
1907
1908 for (i = 0; i < num_patterns; i++) {
1909 struct device_match_pattern *cur_pattern;
1910
1911 /*
1912 * If the pattern in question isn't for a device node, we
1913 * aren't interested.
1914 */
1915 if (patterns[i].type != DEV_MATCH_DEVICE) {
1916 if ((patterns[i].type == DEV_MATCH_PERIPH)
1917 && ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE))
1918 retval |= DM_RET_DESCEND;
1919 continue;
1920 }
1921
1922 cur_pattern = &patterns[i].pattern.device_pattern;
1923
1924 /*
1925 * If they want to match any device node, we give them any
1926 * device node.
1927 */
1928 if (cur_pattern->flags == DEV_MATCH_ANY) {
1929 /* set the copy flag */
1930 retval |= DM_RET_COPY;
1931
1932
1933 /*
1934 * If we've already decided on an action, go ahead
1935 * and return.
1936 */
1937 if ((retval & DM_RET_ACTION_MASK) != DM_RET_NONE)
1938 return(retval);
1939 }
1940
1941 /*
1942 * Not sure why someone would do this...
1943 */
1944 if (cur_pattern->flags == DEV_MATCH_NONE)
1945 continue;
1946
1947 if (((cur_pattern->flags & DEV_MATCH_PATH) != 0)
1948 && (cur_pattern->path_id != device->target->bus->path_id))
1949 continue;
1950
1951 if (((cur_pattern->flags & DEV_MATCH_TARGET) != 0)
1952 && (cur_pattern->target_id != device->target->target_id))
1953 continue;
1954
1955 if (((cur_pattern->flags & DEV_MATCH_LUN) != 0)
1956 && (cur_pattern->target_lun != device->lun_id))
1957 continue;
1958
1959 if (((cur_pattern->flags & DEV_MATCH_INQUIRY) != 0)
1960 && (cam_quirkmatch((caddr_t)&device->inq_data,
1961 (caddr_t)&cur_pattern->inq_pat,
1962 1, sizeof(cur_pattern->inq_pat),
1963 scsi_static_inquiry_match) == NULL))
1964 continue;
1965
1966 /*
1967 * If we get to this point, the user definitely wants
1968 * information on this device. So tell the caller to copy
1969 * the data out.
1970 */
1971 retval |= DM_RET_COPY;
1972
1973 /*
1974 * If the return action has been set to descend, then we
1975 * know that we've already seen a peripheral matching
1976 * expression, therefore we need to further descend the tree.
1977 * This won't change by continuing around the loop, so we
1978 * go ahead and return. If we haven't seen a peripheral
1979 * matching expression, we keep going around the loop until
1980 * we exhaust the matching expressions. We'll set the stop
1981 * flag once we fall out of the loop.
1982 */
1983 if ((retval & DM_RET_ACTION_MASK) == DM_RET_DESCEND)
1984 return(retval);
1985 }
1986
1987 /*
1988 * If the return action hasn't been set to descend yet, that means
1989 * we haven't seen any peripheral matching patterns. So tell the
1990 * caller to stop descending the tree -- the user doesn't want to
1991 * match against lower level tree elements.
1992 */
1993 if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)
1994 retval |= DM_RET_STOP;
1995
1996 return(retval);
1997}
1998
1999/*
2000 * Match a single peripheral against any number of match patterns.
2001 */
2002static dev_match_ret
2003xptperiphmatch(struct dev_match_pattern *patterns, u_int num_patterns,
2004 struct cam_periph *periph)
2005{
2006 dev_match_ret retval;
2007 int i;
2008
2009 /*
2010 * If we aren't given something to match against, that's an error.
2011 */
2012 if (periph == NULL)
2013 return(DM_RET_ERROR);
2014
2015 /*
2016 * If there are no match entries, then this peripheral matches no
2017 * matter what.
2018 */
2019 if ((patterns == NULL) || (num_patterns == 0))
2020 return(DM_RET_STOP | DM_RET_COPY);
2021
2022 /*
2023 * There aren't any nodes below a peripheral node, so there's no
2024 * reason to descend the tree any further.
2025 */
2026 retval = DM_RET_STOP;
2027
2028 for (i = 0; i < num_patterns; i++) {
2029 struct periph_match_pattern *cur_pattern;
2030
2031 /*
2032 * If the pattern in question isn't for a peripheral, we
2033 * aren't interested.
2034 */
2035 if (patterns[i].type != DEV_MATCH_PERIPH)
2036 continue;
2037
2038 cur_pattern = &patterns[i].pattern.periph_pattern;
2039
2040 /*
2041 * If they want to match on anything, then we will do so.
2042 */
2043 if (cur_pattern->flags == PERIPH_MATCH_ANY) {
2044 /* set the copy flag */
2045 retval |= DM_RET_COPY;
2046
2047 /*
2048 * We've already set the return action to stop,
2049 * since there are no nodes below peripherals in
2050 * the tree.
2051 */
2052 return(retval);
2053 }
2054
2055 /*
2056 * Not sure why someone would do this...
2057 */
2058 if (cur_pattern->flags == PERIPH_MATCH_NONE)
2059 continue;
2060
2061 if (((cur_pattern->flags & PERIPH_MATCH_PATH) != 0)
2062 && (cur_pattern->path_id != periph->path->bus->path_id))
2063 continue;
2064
2065 /*
2066 * For the target and lun id's, we have to make sure the
2067 * target and lun pointers aren't NULL. The xpt peripheral
2068 * has a wildcard target and device.
2069 */
2070 if (((cur_pattern->flags & PERIPH_MATCH_TARGET) != 0)
2071 && ((periph->path->target == NULL)
2072 ||(cur_pattern->target_id != periph->path->target->target_id)))
2073 continue;
2074
2075 if (((cur_pattern->flags & PERIPH_MATCH_LUN) != 0)
2076 && ((periph->path->device == NULL)
2077 || (cur_pattern->target_lun != periph->path->device->lun_id)))
2078 continue;
2079
2080 if (((cur_pattern->flags & PERIPH_MATCH_UNIT) != 0)
2081 && (cur_pattern->unit_number != periph->unit_number))
2082 continue;
2083
2084 if (((cur_pattern->flags & PERIPH_MATCH_NAME) != 0)
2085 && (strncmp(cur_pattern->periph_name, periph->periph_name,
2086 DEV_IDLEN) != 0))
2087 continue;
2088
2089 /*
2090 * If we get to this point, the user definitely wants
2091 * information on this peripheral. So tell the caller to
2092 * copy the data out.
2093 */
2094 retval |= DM_RET_COPY;
2095
2096 /*
2097 * The return action has already been set to stop, since
2098 * peripherals don't have any nodes below them in the EDT.
2099 */
2100 return(retval);
2101 }
2102
2103 /*
2104 * If we get to this point, the peripheral that was passed in
2105 * doesn't match any of the patterns.
2106 */
2107 return(retval);
2108}
2109
2110static int
2111xptedtbusfunc(struct cam_eb *bus, void *arg)
2112{
2113 struct ccb_dev_match *cdm;
2114 dev_match_ret retval;
2115
2116 cdm = (struct ccb_dev_match *)arg;
2117
2118 /*
2119 * If our position is for something deeper in the tree, that means
2120 * that we've already seen this node. So, we keep going down.
2121 */
2122 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2123 && (cdm->pos.cookie.bus == bus)
2124 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2125 && (cdm->pos.cookie.target != NULL))
2126 retval = DM_RET_DESCEND;
2127 else
2128 retval = xptbusmatch(cdm->patterns, cdm->num_patterns, bus);
2129
2130 /*
2131 * If we got an error, bail out of the search.
2132 */
2133 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
2134 cdm->status = CAM_DEV_MATCH_ERROR;
2135 return(0);
2136 }
2137
2138 /*
2139 * If the copy flag is set, copy this bus out.
2140 */
2141 if (retval & DM_RET_COPY) {
2142 int spaceleft, j;
2143
2144 spaceleft = cdm->match_buf_len - (cdm->num_matches *
2145 sizeof(struct dev_match_result));
2146
2147 /*
2148 * If we don't have enough space to put in another
2149 * match result, save our position and tell the
2150 * user there are more devices to check.
2151 */
2152 if (spaceleft < sizeof(struct dev_match_result)) {
2153 bzero(&cdm->pos, sizeof(cdm->pos));
2154 cdm->pos.position_type =
2155 CAM_DEV_POS_EDT | CAM_DEV_POS_BUS;
2156
2157 cdm->pos.cookie.bus = bus;
2158 cdm->pos.generations[CAM_BUS_GENERATION]=
2159 bus_generation;
2160 cdm->status = CAM_DEV_MATCH_MORE;
2161 return(0);
2162 }
2163 j = cdm->num_matches;
2164 cdm->num_matches++;
2165 cdm->matches[j].type = DEV_MATCH_BUS;
2166 cdm->matches[j].result.bus_result.path_id = bus->path_id;
2167 cdm->matches[j].result.bus_result.bus_id = bus->sim->bus_id;
2168 cdm->matches[j].result.bus_result.unit_number =
2169 bus->sim->unit_number;
2170 strncpy(cdm->matches[j].result.bus_result.dev_name,
2171 bus->sim->sim_name, DEV_IDLEN);
2172 }
2173
2174 /*
2175 * If the user is only interested in busses, there's no
2176 * reason to descend to the next level in the tree.
2177 */
2178 if ((retval & DM_RET_ACTION_MASK) == DM_RET_STOP)
2179 return(1);
2180
2181 /*
2182 * If there is a target generation recorded, check it to
2183 * make sure the target list hasn't changed.
2184 */
2185 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2186 && (bus == cdm->pos.cookie.bus)
2187 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2188 && (cdm->pos.generations[CAM_TARGET_GENERATION] != 0)
2189 && (cdm->pos.generations[CAM_TARGET_GENERATION] !=
2190 bus->generation)) {
2191 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2192 return(0);
2193 }
2194
2195 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2196 && (cdm->pos.cookie.bus == bus)
2197 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2198 && (cdm->pos.cookie.target != NULL))
2199 return(xpttargettraverse(bus,
2200 (struct cam_et *)cdm->pos.cookie.target,
2201 xptedttargetfunc, arg));
2202 else
2203 return(xpttargettraverse(bus, NULL, xptedttargetfunc, arg));
2204}
2205
2206static int
2207xptedttargetfunc(struct cam_et *target, void *arg)
2208{
2209 struct ccb_dev_match *cdm;
2210
2211 cdm = (struct ccb_dev_match *)arg;
2212
2213 /*
2214 * If there is a device list generation recorded, check it to
2215 * make sure the device list hasn't changed.
2216 */
2217 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2218 && (cdm->pos.cookie.bus == target->bus)
2219 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2220 && (cdm->pos.cookie.target == target)
2221 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2222 && (cdm->pos.generations[CAM_DEV_GENERATION] != 0)
2223 && (cdm->pos.generations[CAM_DEV_GENERATION] !=
2224 target->generation)) {
2225 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2226 return(0);
2227 }
2228
2229 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2230 && (cdm->pos.cookie.bus == target->bus)
2231 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2232 && (cdm->pos.cookie.target == target)
2233 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2234 && (cdm->pos.cookie.device != NULL))
2235 return(xptdevicetraverse(target,
2236 (struct cam_ed *)cdm->pos.cookie.device,
2237 xptedtdevicefunc, arg));
2238 else
2239 return(xptdevicetraverse(target, NULL, xptedtdevicefunc, arg));
2240}
2241
2242static int
2243xptedtdevicefunc(struct cam_ed *device, void *arg)
2244{
2245
2246 struct ccb_dev_match *cdm;
2247 dev_match_ret retval;
2248
2249 cdm = (struct ccb_dev_match *)arg;
2250
2251 /*
2252 * If our position is for something deeper in the tree, that means
2253 * that we've already seen this node. So, we keep going down.
2254 */
2255 if ((cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2256 && (cdm->pos.cookie.device == device)
2257 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2258 && (cdm->pos.cookie.periph != NULL))
2259 retval = DM_RET_DESCEND;
2260 else
2261 retval = xptdevicematch(cdm->patterns, cdm->num_patterns,
2262 device);
2263
2264 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
2265 cdm->status = CAM_DEV_MATCH_ERROR;
2266 return(0);
2267 }
2268
2269 /*
2270 * If the copy flag is set, copy this device out.
2271 */
2272 if (retval & DM_RET_COPY) {
2273 int spaceleft, j;
2274
2275 spaceleft = cdm->match_buf_len - (cdm->num_matches *
2276 sizeof(struct dev_match_result));
2277
2278 /*
2279 * If we don't have enough space to put in another
2280 * match result, save our position and tell the
2281 * user there are more devices to check.
2282 */
2283 if (spaceleft < sizeof(struct dev_match_result)) {
2284 bzero(&cdm->pos, sizeof(cdm->pos));
2285 cdm->pos.position_type =
2286 CAM_DEV_POS_EDT | CAM_DEV_POS_BUS |
2287 CAM_DEV_POS_TARGET | CAM_DEV_POS_DEVICE;
2288
2289 cdm->pos.cookie.bus = device->target->bus;
2290 cdm->pos.generations[CAM_BUS_GENERATION]=
2291 bus_generation;
2292 cdm->pos.cookie.target = device->target;
2293 cdm->pos.generations[CAM_TARGET_GENERATION] =
2294 device->target->bus->generation;
2295 cdm->pos.cookie.device = device;
2296 cdm->pos.generations[CAM_DEV_GENERATION] =
2297 device->target->generation;
2298 cdm->status = CAM_DEV_MATCH_MORE;
2299 return(0);
2300 }
2301 j = cdm->num_matches;
2302 cdm->num_matches++;
2303 cdm->matches[j].type = DEV_MATCH_DEVICE;
2304 cdm->matches[j].result.device_result.path_id =
2305 device->target->bus->path_id;
2306 cdm->matches[j].result.device_result.target_id =
2307 device->target->target_id;
2308 cdm->matches[j].result.device_result.target_lun =
2309 device->lun_id;
2310 bcopy(&device->inq_data,
2311 &cdm->matches[j].result.device_result.inq_data,
2312 sizeof(struct scsi_inquiry_data));
2313
2314 /* Let the user know whether this device is unconfigured */
2315 if (device->flags & CAM_DEV_UNCONFIGURED)
2316 cdm->matches[j].result.device_result.flags =
2317 DEV_RESULT_UNCONFIGURED;
2318 else
2319 cdm->matches[j].result.device_result.flags =
2320 DEV_RESULT_NOFLAG;
2321 }
2322
2323 /*
2324 * If the user isn't interested in peripherals, don't descend
2325 * the tree any further.
2326 */
2327 if ((retval & DM_RET_ACTION_MASK) == DM_RET_STOP)
2328 return(1);
2329
2330 /*
2331 * If there is a peripheral list generation recorded, make sure
2332 * it hasn't changed.
2333 */
2334 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2335 && (device->target->bus == cdm->pos.cookie.bus)
2336 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2337 && (device->target == cdm->pos.cookie.target)
2338 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2339 && (device == cdm->pos.cookie.device)
2340 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2341 && (cdm->pos.generations[CAM_PERIPH_GENERATION] != 0)
2342 && (cdm->pos.generations[CAM_PERIPH_GENERATION] !=
2343 device->generation)){
2344 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2345 return(0);
2346 }
2347
2348 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2349 && (cdm->pos.cookie.bus == device->target->bus)
2350 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2351 && (cdm->pos.cookie.target == device->target)
2352 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2353 && (cdm->pos.cookie.device == device)
2354 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2355 && (cdm->pos.cookie.periph != NULL))
2356 return(xptperiphtraverse(device,
2357 (struct cam_periph *)cdm->pos.cookie.periph,
2358 xptedtperiphfunc, arg));
2359 else
2360 return(xptperiphtraverse(device, NULL, xptedtperiphfunc, arg));
2361}
2362
2363static int
2364xptedtperiphfunc(struct cam_periph *periph, void *arg)
2365{
2366 struct ccb_dev_match *cdm;
2367 dev_match_ret retval;
2368
2369 cdm = (struct ccb_dev_match *)arg;
2370
2371 retval = xptperiphmatch(cdm->patterns, cdm->num_patterns, periph);
2372
2373 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
2374 cdm->status = CAM_DEV_MATCH_ERROR;
2375 return(0);
2376 }
2377
2378 /*
2379 * If the copy flag is set, copy this peripheral out.
2380 */
2381 if (retval & DM_RET_COPY) {
2382 int spaceleft, j;
2383
2384 spaceleft = cdm->match_buf_len - (cdm->num_matches *
2385 sizeof(struct dev_match_result));
2386
2387 /*
2388 * If we don't have enough space to put in another
2389 * match result, save our position and tell the
2390 * user there are more devices to check.
2391 */
2392 if (spaceleft < sizeof(struct dev_match_result)) {
2393 bzero(&cdm->pos, sizeof(cdm->pos));
2394 cdm->pos.position_type =
2395 CAM_DEV_POS_EDT | CAM_DEV_POS_BUS |
2396 CAM_DEV_POS_TARGET | CAM_DEV_POS_DEVICE |
2397 CAM_DEV_POS_PERIPH;
2398
2399 cdm->pos.cookie.bus = periph->path->bus;
2400 cdm->pos.generations[CAM_BUS_GENERATION]=
2401 bus_generation;
2402 cdm->pos.cookie.target = periph->path->target;
2403 cdm->pos.generations[CAM_TARGET_GENERATION] =
2404 periph->path->bus->generation;
2405 cdm->pos.cookie.device = periph->path->device;
2406 cdm->pos.generations[CAM_DEV_GENERATION] =
2407 periph->path->target->generation;
2408 cdm->pos.cookie.periph = periph;
2409 cdm->pos.generations[CAM_PERIPH_GENERATION] =
2410 periph->path->device->generation;
2411 cdm->status = CAM_DEV_MATCH_MORE;
2412 return(0);
2413 }
2414
2415 j = cdm->num_matches;
2416 cdm->num_matches++;
2417 cdm->matches[j].type = DEV_MATCH_PERIPH;
2418 cdm->matches[j].result.periph_result.path_id =
2419 periph->path->bus->path_id;
2420 cdm->matches[j].result.periph_result.target_id =
2421 periph->path->target->target_id;
2422 cdm->matches[j].result.periph_result.target_lun =
2423 periph->path->device->lun_id;
2424 cdm->matches[j].result.periph_result.unit_number =
2425 periph->unit_number;
2426 strncpy(cdm->matches[j].result.periph_result.periph_name,
2427 periph->periph_name, DEV_IDLEN);
2428 }
2429
2430 return(1);
2431}
2432
2433static int
2434xptedtmatch(struct ccb_dev_match *cdm)
2435{
2436 int ret;
2437
2438 cdm->num_matches = 0;
2439
2440 /*
2441 * Check the bus list generation. If it has changed, the user
2442 * needs to reset everything and start over.
2443 */
2444 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2445 && (cdm->pos.generations[CAM_BUS_GENERATION] != 0)
2446 && (cdm->pos.generations[CAM_BUS_GENERATION] != bus_generation)) {
2447 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2448 return(0);
2449 }
2450
2451 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2452 && (cdm->pos.cookie.bus != NULL))
2453 ret = xptbustraverse((struct cam_eb *)cdm->pos.cookie.bus,
2454 xptedtbusfunc, cdm);
2455 else
2456 ret = xptbustraverse(NULL, xptedtbusfunc, cdm);
2457
2458 /*
2459 * If we get back 0, that means that we had to stop before fully
2460 * traversing the EDT. It also means that one of the subroutines
2461 * has set the status field to the proper value. If we get back 1,
2462 * we've fully traversed the EDT and copied out any matching entries.
2463 */
2464 if (ret == 1)
2465 cdm->status = CAM_DEV_MATCH_LAST;
2466
2467 return(ret);
2468}
2469
2470static int
2471xptplistpdrvfunc(struct periph_driver **pdrv, void *arg)
2472{
2473 struct ccb_dev_match *cdm;
2474
2475 cdm = (struct ccb_dev_match *)arg;
2476
2477 if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR)
2478 && (cdm->pos.cookie.pdrv == pdrv)
2479 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2480 && (cdm->pos.generations[CAM_PERIPH_GENERATION] != 0)
2481 && (cdm->pos.generations[CAM_PERIPH_GENERATION] !=
2482 (*pdrv)->generation)) {
2483 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2484 return(0);
2485 }
2486
2487 if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR)
2488 && (cdm->pos.cookie.pdrv == pdrv)
2489 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2490 && (cdm->pos.cookie.periph != NULL))
2491 return(xptpdperiphtraverse(pdrv,
2492 (struct cam_periph *)cdm->pos.cookie.periph,
2493 xptplistperiphfunc, arg));
2494 else
2495 return(xptpdperiphtraverse(pdrv, NULL,xptplistperiphfunc, arg));
2496}
2497
2498static int
2499xptplistperiphfunc(struct cam_periph *periph, void *arg)
2500{
2501 struct ccb_dev_match *cdm;
2502 dev_match_ret retval;
2503
2504 cdm = (struct ccb_dev_match *)arg;
2505
2506 retval = xptperiphmatch(cdm->patterns, cdm->num_patterns, periph);
2507
2508 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
2509 cdm->status = CAM_DEV_MATCH_ERROR;
2510 return(0);
2511 }
2512
2513 /*
2514 * If the copy flag is set, copy this peripheral out.
2515 */
2516 if (retval & DM_RET_COPY) {
2517 int spaceleft, j;
2518
2519 spaceleft = cdm->match_buf_len - (cdm->num_matches *
2520 sizeof(struct dev_match_result));
2521
2522 /*
2523 * If we don't have enough space to put in another
2524 * match result, save our position and tell the
2525 * user there are more devices to check.
2526 */
2527 if (spaceleft < sizeof(struct dev_match_result)) {
2528 struct periph_driver **pdrv;
2529
2530 pdrv = NULL;
2531 bzero(&cdm->pos, sizeof(cdm->pos));
2532 cdm->pos.position_type =
2533 CAM_DEV_POS_PDRV | CAM_DEV_POS_PDPTR |
2534 CAM_DEV_POS_PERIPH;
2535
2536 /*
2537 * This may look a bit non-sensical, but it is
2538 * actually quite logical. There are very few
2539 * peripheral drivers, and bloating every peripheral
2540 * structure with a pointer back to its parent
2541 * peripheral driver linker set entry would cost
2542 * more in the long run than doing this quick lookup.
2543 */
2544 for (pdrv = periph_drivers; *pdrv != NULL; pdrv++) {
2545 if (strcmp((*pdrv)->driver_name,
2546 periph->periph_name) == 0)
2547 break;
2548 }
2549
2550 if (*pdrv == NULL) {
2551 cdm->status = CAM_DEV_MATCH_ERROR;
2552 return(0);
2553 }
2554
2555 cdm->pos.cookie.pdrv = pdrv;
2556 /*
2557 * The periph generation slot does double duty, as
2558 * does the periph pointer slot. They are used for
2559 * both edt and pdrv lookups and positioning.
2560 */
2561 cdm->pos.cookie.periph = periph;
2562 cdm->pos.generations[CAM_PERIPH_GENERATION] =
2563 (*pdrv)->generation;
2564 cdm->status = CAM_DEV_MATCH_MORE;
2565 return(0);
2566 }
2567
2568 j = cdm->num_matches;
2569 cdm->num_matches++;
2570 cdm->matches[j].type = DEV_MATCH_PERIPH;
2571 cdm->matches[j].result.periph_result.path_id =
2572 periph->path->bus->path_id;
2573
2574 /*
2575 * The transport layer peripheral doesn't have a target or
2576 * lun.
2577 */
2578 if (periph->path->target)
2579 cdm->matches[j].result.periph_result.target_id =
2580 periph->path->target->target_id;
2581 else
2582 cdm->matches[j].result.periph_result.target_id = -1;
2583
2584 if (periph->path->device)
2585 cdm->matches[j].result.periph_result.target_lun =
2586 periph->path->device->lun_id;
2587 else
2588 cdm->matches[j].result.periph_result.target_lun = -1;
2589
2590 cdm->matches[j].result.periph_result.unit_number =
2591 periph->unit_number;
2592 strncpy(cdm->matches[j].result.periph_result.periph_name,
2593 periph->periph_name, DEV_IDLEN);
2594 }
2595
2596 return(1);
2597}
2598
2599static int
2600xptperiphlistmatch(struct ccb_dev_match *cdm)
2601{
2602 int ret;
2603
2604 cdm->num_matches = 0;
2605
2606 /*
2607 * At this point in the edt traversal function, we check the bus
2608 * list generation to make sure that no busses have been added or
2609 * removed since the user last sent a XPT_DEV_MATCH ccb through.
2610 * For the peripheral driver list traversal function, however, we
2611 * don't have to worry about new peripheral driver types coming or
2612 * going; they're in a linker set, and therefore can't change
2613 * without a recompile.
2614 */
2615
2616 if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR)
2617 && (cdm->pos.cookie.pdrv != NULL))
2618 ret = xptpdrvtraverse(
2619 (struct periph_driver **)cdm->pos.cookie.pdrv,
2620 xptplistpdrvfunc, cdm);
2621 else
2622 ret = xptpdrvtraverse(NULL, xptplistpdrvfunc, cdm);
2623
2624 /*
2625 * If we get back 0, that means that we had to stop before fully
2626 * traversing the peripheral driver tree. It also means that one of
2627 * the subroutines has set the status field to the proper value. If
2628 * we get back 1, we've fully traversed the EDT and copied out any
2629 * matching entries.
2630 */
2631 if (ret == 1)
2632 cdm->status = CAM_DEV_MATCH_LAST;
2633
2634 return(ret);
2635}
2636
2637static int
2638xptbustraverse(struct cam_eb *start_bus, xpt_busfunc_t *tr_func, void *arg)
2639{
2640 struct cam_eb *bus, *next_bus;
2641 int retval;
2642
2643 retval = 1;
2644
2645 for (bus = (start_bus ? start_bus : TAILQ_FIRST(&xpt_busses));
2646 bus != NULL;
2647 bus = next_bus) {
2648 next_bus = TAILQ_NEXT(bus, links);
2649
2650 retval = tr_func(bus, arg);
2651 if (retval == 0)
2652 return(retval);
2653 }
2654
2655 return(retval);
2656}
2657
2658static int
2659xpttargettraverse(struct cam_eb *bus, struct cam_et *start_target,
2660 xpt_targetfunc_t *tr_func, void *arg)
2661{
2662 struct cam_et *target, *next_target;
2663 int retval;
2664
2665 retval = 1;
2666 for (target = (start_target ? start_target :
2667 TAILQ_FIRST(&bus->et_entries));
2668 target != NULL; target = next_target) {
2669
2670 next_target = TAILQ_NEXT(target, links);
2671
2672 retval = tr_func(target, arg);
2673
2674 if (retval == 0)
2675 return(retval);
2676 }
2677
2678 return(retval);
2679}
2680
2681static int
2682xptdevicetraverse(struct cam_et *target, struct cam_ed *start_device,
2683 xpt_devicefunc_t *tr_func, void *arg)
2684{
2685 struct cam_ed *device, *next_device;
2686 int retval;
2687
2688 retval = 1;
2689 for (device = (start_device ? start_device :
2690 TAILQ_FIRST(&target->ed_entries));
2691 device != NULL;
2692 device = next_device) {
2693
2694 next_device = TAILQ_NEXT(device, links);
2695
2696 retval = tr_func(device, arg);
2697
2698 if (retval == 0)
2699 return(retval);
2700 }
2701
2702 return(retval);
2703}
2704
2705static int
2706xptperiphtraverse(struct cam_ed *device, struct cam_periph *start_periph,
2707 xpt_periphfunc_t *tr_func, void *arg)
2708{
2709 struct cam_periph *periph, *next_periph;
2710 int retval;
2711
2712 retval = 1;
2713
2714 for (periph = (start_periph ? start_periph :
2715 SLIST_FIRST(&device->periphs));
2716 periph != NULL;
2717 periph = next_periph) {
2718
2719 next_periph = SLIST_NEXT(periph, periph_links);
2720
2721 retval = tr_func(periph, arg);
2722 if (retval == 0)
2723 return(retval);
2724 }
2725
2726 return(retval);
2727}
2728
2729static int
2730xptpdrvtraverse(struct periph_driver **start_pdrv,
2731 xpt_pdrvfunc_t *tr_func, void *arg)
2732{
2733 struct periph_driver **pdrv;
2734 int retval;
2735
2736 retval = 1;
2737
2738 /*
2739 * We don't traverse the peripheral driver list like we do the
2740 * other lists, because it is a linker set, and therefore cannot be
2741 * changed during runtime. If the peripheral driver list is ever
2742 * re-done to be something other than a linker set (i.e. it can
2743 * change while the system is running), the list traversal should
2744 * be modified to work like the other traversal functions.
2745 */
2746 for (pdrv = (start_pdrv ? start_pdrv : periph_drivers);
2747 *pdrv != NULL; pdrv++) {
2748 retval = tr_func(pdrv, arg);
2749
2750 if (retval == 0)
2751 return(retval);
2752 }
2753
2754 return(retval);
2755}
2756
2757static int
2758xptpdperiphtraverse(struct periph_driver **pdrv,
2759 struct cam_periph *start_periph,
2760 xpt_periphfunc_t *tr_func, void *arg)
2761{
2762 struct cam_periph *periph, *next_periph;
2763 int retval;
2764
2765 retval = 1;
2766
2767 for (periph = (start_periph ? start_periph :
2768 TAILQ_FIRST(&(*pdrv)->units)); periph != NULL;
2769 periph = next_periph) {
2770
2771 next_periph = TAILQ_NEXT(periph, unit_links);
2772
2773 retval = tr_func(periph, arg);
2774 if (retval == 0)
2775 return(retval);
2776 }
2777 return(retval);
2778}
2779
2780static int
2781xptdefbusfunc(struct cam_eb *bus, void *arg)
2782{
2783 struct xpt_traverse_config *tr_config;
2784
2785 tr_config = (struct xpt_traverse_config *)arg;
2786
2787 if (tr_config->depth == XPT_DEPTH_BUS) {
2788 xpt_busfunc_t *tr_func;
2789
2790 tr_func = (xpt_busfunc_t *)tr_config->tr_func;
2791
2792 return(tr_func(bus, tr_config->tr_arg));
2793 } else
2794 return(xpttargettraverse(bus, NULL, xptdeftargetfunc, arg));
2795}
2796
2797static int
2798xptdeftargetfunc(struct cam_et *target, void *arg)
2799{
2800 struct xpt_traverse_config *tr_config;
2801
2802 tr_config = (struct xpt_traverse_config *)arg;
2803
2804 if (tr_config->depth == XPT_DEPTH_TARGET) {
2805 xpt_targetfunc_t *tr_func;
2806
2807 tr_func = (xpt_targetfunc_t *)tr_config->tr_func;
2808
2809 return(tr_func(target, tr_config->tr_arg));
2810 } else
2811 return(xptdevicetraverse(target, NULL, xptdefdevicefunc, arg));
2812}
2813
2814static int
2815xptdefdevicefunc(struct cam_ed *device, void *arg)
2816{
2817 struct xpt_traverse_config *tr_config;
2818
2819 tr_config = (struct xpt_traverse_config *)arg;
2820
2821 if (tr_config->depth == XPT_DEPTH_DEVICE) {
2822 xpt_devicefunc_t *tr_func;
2823
2824 tr_func = (xpt_devicefunc_t *)tr_config->tr_func;
2825
2826 return(tr_func(device, tr_config->tr_arg));
2827 } else
2828 return(xptperiphtraverse(device, NULL, xptdefperiphfunc, arg));
2829}
2830
2831static int
2832xptdefperiphfunc(struct cam_periph *periph, void *arg)
2833{
2834 struct xpt_traverse_config *tr_config;
2835 xpt_periphfunc_t *tr_func;
2836
2837 tr_config = (struct xpt_traverse_config *)arg;
2838
2839 tr_func = (xpt_periphfunc_t *)tr_config->tr_func;
2840
2841 /*
2842 * Unlike the other default functions, we don't check for depth
2843 * here. The peripheral driver level is the last level in the EDT,
2844 * so if we're here, we should execute the function in question.
2845 */
2846 return(tr_func(periph, tr_config->tr_arg));
2847}
2848
2849/*
2850 * Execute the given function for every bus in the EDT.
2851 */
2852static int
2853xpt_for_all_busses(xpt_busfunc_t *tr_func, void *arg)
2854{
2855 struct xpt_traverse_config tr_config;
2856
2857 tr_config.depth = XPT_DEPTH_BUS;
2858 tr_config.tr_func = tr_func;
2859 tr_config.tr_arg = arg;
2860
2861 return(xptbustraverse(NULL, xptdefbusfunc, &tr_config));
2862}
2863
2864#ifdef notusedyet
2865/*
2866 * Execute the given function for every target in the EDT.
2867 */
2868static int
2869xpt_for_all_targets(xpt_targetfunc_t *tr_func, void *arg)
2870{
2871 struct xpt_traverse_config tr_config;
2872
2873 tr_config.depth = XPT_DEPTH_TARGET;
2874 tr_config.tr_func = tr_func;
2875 tr_config.tr_arg = arg;
2876
2877 return(xptbustraverse(NULL, xptdefbusfunc, &tr_config));
2878}
2879#endif /* notusedyet */
2880
2881/*
2882 * Execute the given function for every device in the EDT.
2883 */
2884static int
2885xpt_for_all_devices(xpt_devicefunc_t *tr_func, void *arg)
2886{
2887 struct xpt_traverse_config tr_config;
2888
2889 tr_config.depth = XPT_DEPTH_DEVICE;
2890 tr_config.tr_func = tr_func;
2891 tr_config.tr_arg = arg;
2892
2893 return(xptbustraverse(NULL, xptdefbusfunc, &tr_config));
2894}
2895
2896#ifdef notusedyet
2897/*
2898 * Execute the given function for every peripheral in the EDT.
2899 */
2900static int
2901xpt_for_all_periphs(xpt_periphfunc_t *tr_func, void *arg)
2902{
2903 struct xpt_traverse_config tr_config;
2904
2905 tr_config.depth = XPT_DEPTH_PERIPH;
2906 tr_config.tr_func = tr_func;
2907 tr_config.tr_arg = arg;
2908
2909 return(xptbustraverse(NULL, xptdefbusfunc, &tr_config));
2910}
2911#endif /* notusedyet */
2912
2913static int
2914xptsetasyncfunc(struct cam_ed *device, void *arg)
2915{
2916 struct cam_path path;
2917 struct ccb_getdev cgd;
2918 struct async_node *cur_entry;
2919
2920 cur_entry = (struct async_node *)arg;
2921
2922 /*
2923 * Don't report unconfigured devices (Wildcard devs,
2924 * devices only for target mode, device instances
2925 * that have been invalidated but are waiting for
2926 * their last reference count to be released).
2927 */
2928 if ((device->flags & CAM_DEV_UNCONFIGURED) != 0)
2929 return (1);
2930
2931 xpt_compile_path(&path,
2932 NULL,
2933 device->target->bus->path_id,
2934 device->target->target_id,
2935 device->lun_id);
2936 xpt_setup_ccb(&cgd.ccb_h, &path, /*priority*/1);
2937 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
2938 xpt_action((union ccb *)&cgd);
2939 cur_entry->callback(cur_entry->callback_arg,
2940 AC_FOUND_DEVICE,
2941 &path, &cgd);
2942 xpt_release_path(&path);
2943
2944 return(1);
2945}
2946
2947static int
2948xptsetasyncbusfunc(struct cam_eb *bus, void *arg)
2949{
2950 struct cam_path path;
2951 struct ccb_pathinq cpi;
2952 struct async_node *cur_entry;
2953
2954 cur_entry = (struct async_node *)arg;
2955
2956 xpt_compile_path(&path, /*periph*/NULL,
2957 bus->sim->path_id,
2958 CAM_TARGET_WILDCARD,
2959 CAM_LUN_WILDCARD);
2960 xpt_setup_ccb(&cpi.ccb_h, &path, /*priority*/1);
2961 cpi.ccb_h.func_code = XPT_PATH_INQ;
2962 xpt_action((union ccb *)&cpi);
2963 cur_entry->callback(cur_entry->callback_arg,
2964 AC_PATH_REGISTERED,
2965 &path, &cpi);
2966 xpt_release_path(&path);
2967
2968 return(1);
2969}
2970
2971void
2972xpt_action(union ccb *start_ccb)
2973{
2974 int iopl;
2975
2976 GIANT_REQUIRED;
2977
2978 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("xpt_action\n"));
2979
2980 start_ccb->ccb_h.status = CAM_REQ_INPROG;
2981
2982 iopl = splsoftcam();
2983 switch (start_ccb->ccb_h.func_code) {
2984 case XPT_SCSI_IO:
2985 {
2986#ifdef CAM_NEW_TRAN_CODE
2987 struct cam_ed *device;
2988#endif /* CAM_NEW_TRAN_CODE */
2989#ifdef CAMDEBUG
2990 char cdb_str[(SCSI_MAX_CDBLEN * 3) + 1];
2991 struct cam_path *path;
2992
2993 path = start_ccb->ccb_h.path;
2994#endif
2995
2996 /*
2997 * For the sake of compatibility with SCSI-1
2998 * devices that may not understand the identify
2999 * message, we include lun information in the
3000 * second byte of all commands. SCSI-1 specifies
3001 * that luns are a 3 bit value and reserves only 3
3002 * bits for lun information in the CDB. Later
3003 * revisions of the SCSI spec allow for more than 8
3004 * luns, but have deprecated lun information in the
3005 * CDB. So, if the lun won't fit, we must omit.
3006 *
3007 * Also be aware that during initial probing for devices,
3008 * the inquiry information is unknown but initialized to 0.
3009 * This means that this code will be exercised while probing
3010 * devices with an ANSI revision greater than 2.
3011 */
3012#ifdef CAM_NEW_TRAN_CODE
3013 device = start_ccb->ccb_h.path->device;
3014 if (device->protocol_version <= SCSI_REV_2
3015#else /* CAM_NEW_TRAN_CODE */
3016 if (SID_ANSI_REV(&start_ccb->ccb_h.path->device->inq_data) <= 2
3017#endif /* CAM_NEW_TRAN_CODE */
3018 && start_ccb->ccb_h.target_lun < 8
3019 && (start_ccb->ccb_h.flags & CAM_CDB_POINTER) == 0) {
3020
3021 start_ccb->csio.cdb_io.cdb_bytes[1] |=
3022 start_ccb->ccb_h.target_lun << 5;
3023 }
3024 start_ccb->csio.scsi_status = SCSI_STATUS_OK;
3025 CAM_DEBUG(path, CAM_DEBUG_CDB,("%s. CDB: %s\n",
3026 scsi_op_desc(start_ccb->csio.cdb_io.cdb_bytes[0],
3027 &path->device->inq_data),
3028 scsi_cdb_string(start_ccb->csio.cdb_io.cdb_bytes,
3029 cdb_str, sizeof(cdb_str))));
3030 }
3031 /* FALLTHROUGH */
3032 case XPT_TARGET_IO:
3033 case XPT_CONT_TARGET_IO:
3034 start_ccb->csio.sense_resid = 0;
3035 start_ccb->csio.resid = 0;
3036 /* FALLTHROUGH */
3037 case XPT_RESET_DEV:
3038 case XPT_ENG_EXEC:
3039 {
3040 struct cam_path *path;
3041 int s;
3042 int runq;
3043
3044 path = start_ccb->ccb_h.path;
3045 s = splsoftcam();
3046
3047 cam_ccbq_insert_ccb(&path->device->ccbq, start_ccb);
3048 if (path->device->qfrozen_cnt == 0)
3049 runq = xpt_schedule_dev_sendq(path->bus, path->device);
3050 else
3051 runq = 0;
3052 splx(s);
3053 if (runq != 0)
3054 xpt_run_dev_sendq(path->bus);
3055 break;
3056 }
3057 case XPT_SET_TRAN_SETTINGS:
3058 {
3059 xpt_set_transfer_settings(&start_ccb->cts,
3060 start_ccb->ccb_h.path->device,
3061 /*async_update*/FALSE);
3062 break;
3063 }
3064 case XPT_CALC_GEOMETRY:
3065 {
3066 struct cam_sim *sim;
3067
3068 /* Filter out garbage */
3069 if (start_ccb->ccg.block_size == 0
3070 || start_ccb->ccg.volume_size == 0) {
3071 start_ccb->ccg.cylinders = 0;
3072 start_ccb->ccg.heads = 0;
3073 start_ccb->ccg.secs_per_track = 0;
3074 start_ccb->ccb_h.status = CAM_REQ_CMP;
3075 break;
3076 }
3077#ifdef PC98
3078 /*
3079 * In a PC-98 system, geometry translation depens on
3080 * the "real" device geometry obtained from mode page 4.
3081 * SCSI geometry translation is performed in the
3082 * initialization routine of the SCSI BIOS and the result
3083 * stored in host memory. If the translation is available
3084 * in host memory, use it. If not, rely on the default
3085 * translation the device driver performs.
3086 */
3087 if (scsi_da_bios_params(&start_ccb->ccg) != 0) {
3088 start_ccb->ccb_h.status = CAM_REQ_CMP;
3089 break;
3090 }
3091#endif
3092 sim = start_ccb->ccb_h.path->bus->sim;
3093 (*(sim->sim_action))(sim, start_ccb);
3094 break;
3095 }
3096 case XPT_ABORT:
3097 {
3098 union ccb* abort_ccb;
3099 int s;
3100
3101 abort_ccb = start_ccb->cab.abort_ccb;
3102 if (XPT_FC_IS_DEV_QUEUED(abort_ccb)) {
3103
3104 if (abort_ccb->ccb_h.pinfo.index >= 0) {
3105 struct cam_ccbq *ccbq;
3106
3107 ccbq = &abort_ccb->ccb_h.path->device->ccbq;
3108 cam_ccbq_remove_ccb(ccbq, abort_ccb);
3109 abort_ccb->ccb_h.status =
3110 CAM_REQ_ABORTED|CAM_DEV_QFRZN;
3111 xpt_freeze_devq(abort_ccb->ccb_h.path, 1);
3112 s = splcam();
3113 xpt_done(abort_ccb);
3114 splx(s);
3115 start_ccb->ccb_h.status = CAM_REQ_CMP;
3116 break;
3117 }
3118 if (abort_ccb->ccb_h.pinfo.index == CAM_UNQUEUED_INDEX
3119 && (abort_ccb->ccb_h.status & CAM_SIM_QUEUED) == 0) {
3120 /*
3121 * We've caught this ccb en route to
3122 * the SIM. Flag it for abort and the
3123 * SIM will do so just before starting
3124 * real work on the CCB.
3125 */
3126 abort_ccb->ccb_h.status =
3127 CAM_REQ_ABORTED|CAM_DEV_QFRZN;
3128 xpt_freeze_devq(abort_ccb->ccb_h.path, 1);
3129 start_ccb->ccb_h.status = CAM_REQ_CMP;
3130 break;
3131 }
3132 }
3133 if (XPT_FC_IS_QUEUED(abort_ccb)
3134 && (abort_ccb->ccb_h.pinfo.index == CAM_DONEQ_INDEX)) {
3135 /*
3136 * It's already completed but waiting
3137 * for our SWI to get to it.
3138 */
3139 start_ccb->ccb_h.status = CAM_UA_ABORT;
3140 break;
3141 }
3142 /*
3143 * If we weren't able to take care of the abort request
3144 * in the XPT, pass the request down to the SIM for processing.
3145 */
3146 }
3147 /* FALLTHROUGH */
3148 case XPT_ACCEPT_TARGET_IO:
3149 case XPT_EN_LUN:
3150 case XPT_IMMED_NOTIFY:
3151 case XPT_NOTIFY_ACK:
3152 case XPT_GET_TRAN_SETTINGS:
3153 case XPT_RESET_BUS:
3154 {
3155 struct cam_sim *sim;
3156
3157 sim = start_ccb->ccb_h.path->bus->sim;
3158 (*(sim->sim_action))(sim, start_ccb);
3159 break;
3160 }
3161 case XPT_PATH_INQ:
3162 {
3163 struct cam_sim *sim;
3164
3165 sim = start_ccb->ccb_h.path->bus->sim;
3166 (*(sim->sim_action))(sim, start_ccb);
3167 break;
3168 }
3169 case XPT_PATH_STATS:
3170 start_ccb->cpis.last_reset =
3171 start_ccb->ccb_h.path->bus->last_reset;
3172 start_ccb->ccb_h.status = CAM_REQ_CMP;
3173 break;
3174 case XPT_GDEV_TYPE:
3175 {
3176 struct cam_ed *dev;
3177 int s;
3178
3179 dev = start_ccb->ccb_h.path->device;
3180 s = splcam();
3181 if ((dev->flags & CAM_DEV_UNCONFIGURED) != 0) {
3182 start_ccb->ccb_h.status = CAM_DEV_NOT_THERE;
3183 } else {
3184 struct ccb_getdev *cgd;
3185 struct cam_eb *bus;
3186 struct cam_et *tar;
3187
3188 cgd = &start_ccb->cgd;
3189 bus = cgd->ccb_h.path->bus;
3190 tar = cgd->ccb_h.path->target;
3191 cgd->inq_data = dev->inq_data;
3192 cgd->ccb_h.status = CAM_REQ_CMP;
3193 cgd->serial_num_len = dev->serial_num_len;
3194 if ((dev->serial_num_len > 0)
3195 && (dev->serial_num != NULL))
3196 bcopy(dev->serial_num, cgd->serial_num,
3197 dev->serial_num_len);
3198 }
3199 splx(s);
3200 break;
3201 }
3202 case XPT_GDEV_STATS:
3203 {
3204 struct cam_ed *dev;
3205 int s;
3206
3207 dev = start_ccb->ccb_h.path->device;
3208 s = splcam();
3209 if ((dev->flags & CAM_DEV_UNCONFIGURED) != 0) {
3210 start_ccb->ccb_h.status = CAM_DEV_NOT_THERE;
3211 } else {
3212 struct ccb_getdevstats *cgds;
3213 struct cam_eb *bus;
3214 struct cam_et *tar;
3215
3216 cgds = &start_ccb->cgds;
3217 bus = cgds->ccb_h.path->bus;
3218 tar = cgds->ccb_h.path->target;
3219 cgds->dev_openings = dev->ccbq.dev_openings;
3220 cgds->dev_active = dev->ccbq.dev_active;
3221 cgds->devq_openings = dev->ccbq.devq_openings;
3222 cgds->devq_queued = dev->ccbq.queue.entries;
3223 cgds->held = dev->ccbq.held;
3224 cgds->last_reset = tar->last_reset;
3225 cgds->maxtags = dev->quirk->maxtags;
3226 cgds->mintags = dev->quirk->mintags;
3227 if (timevalcmp(&tar->last_reset, &bus->last_reset, <))
3228 cgds->last_reset = bus->last_reset;
3229 cgds->ccb_h.status = CAM_REQ_CMP;
3230 }
3231 splx(s);
3232 break;
3233 }
3234 case XPT_GDEVLIST:
3235 {
3236 struct cam_periph *nperiph;
3237 struct periph_list *periph_head;
3238 struct ccb_getdevlist *cgdl;
3239 u_int i;
3240 int s;
3241 struct cam_ed *device;
3242 int found;
3243
3244
3245 found = 0;
3246
3247 /*
3248 * Don't want anyone mucking with our data.
3249 */
3250 s = splcam();
3251 device = start_ccb->ccb_h.path->device;
3252 periph_head = &device->periphs;
3253 cgdl = &start_ccb->cgdl;
3254
3255 /*
3256 * Check and see if the list has changed since the user
3257 * last requested a list member. If so, tell them that the
3258 * list has changed, and therefore they need to start over
3259 * from the beginning.
3260 */
3261 if ((cgdl->index != 0) &&
3262 (cgdl->generation != device->generation)) {
3263 cgdl->status = CAM_GDEVLIST_LIST_CHANGED;
3264 splx(s);
3265 break;
3266 }
3267
3268 /*
3269 * Traverse the list of peripherals and attempt to find
3270 * the requested peripheral.
3271 */
3272 for (nperiph = SLIST_FIRST(periph_head), i = 0;
3273 (nperiph != NULL) && (i <= cgdl->index);
3274 nperiph = SLIST_NEXT(nperiph, periph_links), i++) {
3275 if (i == cgdl->index) {
3276 strncpy(cgdl->periph_name,
3277 nperiph->periph_name,
3278 DEV_IDLEN);
3279 cgdl->unit_number = nperiph->unit_number;
3280 found = 1;
3281 }
3282 }
3283 if (found == 0) {
3284 cgdl->status = CAM_GDEVLIST_ERROR;
3285 splx(s);
3286 break;
3287 }
3288
3289 if (nperiph == NULL)
3290 cgdl->status = CAM_GDEVLIST_LAST_DEVICE;
3291 else
3292 cgdl->status = CAM_GDEVLIST_MORE_DEVS;
3293
3294 cgdl->index++;
3295 cgdl->generation = device->generation;
3296
3297 splx(s);
3298 cgdl->ccb_h.status = CAM_REQ_CMP;
3299 break;
3300 }
3301 case XPT_DEV_MATCH:
3302 {
3303 int s;
3304 dev_pos_type position_type;
3305 struct ccb_dev_match *cdm;
3306
3307 cdm = &start_ccb->cdm;
3308
3309 /*
3310 * Prevent EDT changes while we traverse it.
3311 */
3312 s = splcam();
3313 /*
3314 * There are two ways of getting at information in the EDT.
3315 * The first way is via the primary EDT tree. It starts
3316 * with a list of busses, then a list of targets on a bus,
3317 * then devices/luns on a target, and then peripherals on a
3318 * device/lun. The "other" way is by the peripheral driver
3319 * lists. The peripheral driver lists are organized by
3320 * peripheral driver. (obviously) So it makes sense to
3321 * use the peripheral driver list if the user is looking
3322 * for something like "da1", or all "da" devices. If the
3323 * user is looking for something on a particular bus/target
3324 * or lun, it's generally better to go through the EDT tree.
3325 */
3326
3327 if (cdm->pos.position_type != CAM_DEV_POS_NONE)
3328 position_type = cdm->pos.position_type;
3329 else {
3330 u_int i;
3331
3332 position_type = CAM_DEV_POS_NONE;
3333
3334 for (i = 0; i < cdm->num_patterns; i++) {
3335 if ((cdm->patterns[i].type == DEV_MATCH_BUS)
3336 ||(cdm->patterns[i].type == DEV_MATCH_DEVICE)){
3337 position_type = CAM_DEV_POS_EDT;
3338 break;
3339 }
3340 }
3341
3342 if (cdm->num_patterns == 0)
3343 position_type = CAM_DEV_POS_EDT;
3344 else if (position_type == CAM_DEV_POS_NONE)
3345 position_type = CAM_DEV_POS_PDRV;
3346 }
3347
3348 switch(position_type & CAM_DEV_POS_TYPEMASK) {
3349 case CAM_DEV_POS_EDT:
3350 xptedtmatch(cdm);
3351 break;
3352 case CAM_DEV_POS_PDRV:
3353 xptperiphlistmatch(cdm);
3354 break;
3355 default:
3356 cdm->status = CAM_DEV_MATCH_ERROR;
3357 break;
3358 }
3359
3360 splx(s);
3361
3362 if (cdm->status == CAM_DEV_MATCH_ERROR)
3363 start_ccb->ccb_h.status = CAM_REQ_CMP_ERR;
3364 else
3365 start_ccb->ccb_h.status = CAM_REQ_CMP;
3366
3367 break;
3368 }
3369 case XPT_SASYNC_CB:
3370 {
3371 struct ccb_setasync *csa;
3372 struct async_node *cur_entry;
3373 struct async_list *async_head;
3374 u_int32_t added;
3375 int s;
3376
3377 csa = &start_ccb->csa;
3378 added = csa->event_enable;
3379 async_head = &csa->ccb_h.path->device->asyncs;
3380
3381 /*
3382 * If there is already an entry for us, simply
3383 * update it.
3384 */
3385 s = splcam();
3386 cur_entry = SLIST_FIRST(async_head);
3387 while (cur_entry != NULL) {
3388 if ((cur_entry->callback_arg == csa->callback_arg)
3389 && (cur_entry->callback == csa->callback))
3390 break;
3391 cur_entry = SLIST_NEXT(cur_entry, links);
3392 }
3393
3394 if (cur_entry != NULL) {
3395 /*
3396 * If the request has no flags set,
3397 * remove the entry.
3398 */
3399 added &= ~cur_entry->event_enable;
3400 if (csa->event_enable == 0) {
3401 SLIST_REMOVE(async_head, cur_entry,
3402 async_node, links);
3403 csa->ccb_h.path->device->refcount--;
| 69
70/*
71 * Definition of an async handler callback block. These are used to add
72 * SIMs and peripherals to the async callback lists.
73 */
74struct async_node {
75 SLIST_ENTRY(async_node) links;
76 u_int32_t event_enable; /* Async Event enables */
77 void (*callback)(void *arg, u_int32_t code,
78 struct cam_path *path, void *args);
79 void *callback_arg;
80};
81
82SLIST_HEAD(async_list, async_node);
83SLIST_HEAD(periph_list, cam_periph);
84static STAILQ_HEAD(highpowerlist, ccb_hdr) highpowerq;
85
86/*
87 * This is the maximum number of high powered commands (e.g. start unit)
88 * that can be outstanding at a particular time.
89 */
90#ifndef CAM_MAX_HIGHPOWER
91#define CAM_MAX_HIGHPOWER 4
92#endif
93
94/* number of high powered commands that can go through right now */
95static int num_highpower = CAM_MAX_HIGHPOWER;
96
97/*
98 * Structure for queueing a device in a run queue.
99 * There is one run queue for allocating new ccbs,
100 * and another for sending ccbs to the controller.
101 */
102struct cam_ed_qinfo {
103 cam_pinfo pinfo;
104 struct cam_ed *device;
105};
106
107/*
108 * The CAM EDT (Existing Device Table) contains the device information for
109 * all devices for all busses in the system. The table contains a
110 * cam_ed structure for each device on the bus.
111 */
112struct cam_ed {
113 TAILQ_ENTRY(cam_ed) links;
114 struct cam_ed_qinfo alloc_ccb_entry;
115 struct cam_ed_qinfo send_ccb_entry;
116 struct cam_et *target;
117 lun_id_t lun_id;
118 struct camq drvq; /*
119 * Queue of type drivers wanting to do
120 * work on this device.
121 */
122 struct cam_ccbq ccbq; /* Queue of pending ccbs */
123 struct async_list asyncs; /* Async callback info for this B/T/L */
124 struct periph_list periphs; /* All attached devices */
125 u_int generation; /* Generation number */
126 struct cam_periph *owner; /* Peripheral driver's ownership tag */
127 struct xpt_quirk_entry *quirk; /* Oddities about this device */
128 /* Storage for the inquiry data */
129#ifdef CAM_NEW_TRAN_CODE
130 cam_proto protocol;
131 u_int protocol_version;
132 cam_xport transport;
133 u_int transport_version;
134#endif /* CAM_NEW_TRAN_CODE */
135 struct scsi_inquiry_data inq_data;
136 u_int8_t inq_flags; /*
137 * Current settings for inquiry flags.
138 * This allows us to override settings
139 * like disconnection and tagged
140 * queuing for a device.
141 */
142 u_int8_t queue_flags; /* Queue flags from the control page */
143 u_int8_t serial_num_len;
144 u_int8_t *serial_num;
145 u_int32_t qfrozen_cnt;
146 u_int32_t flags;
147#define CAM_DEV_UNCONFIGURED 0x01
148#define CAM_DEV_REL_TIMEOUT_PENDING 0x02
149#define CAM_DEV_REL_ON_COMPLETE 0x04
150#define CAM_DEV_REL_ON_QUEUE_EMPTY 0x08
151#define CAM_DEV_RESIZE_QUEUE_NEEDED 0x10
152#define CAM_DEV_TAG_AFTER_COUNT 0x20
153#define CAM_DEV_INQUIRY_DATA_VALID 0x40
154 u_int32_t tag_delay_count;
155#define CAM_TAG_DELAY_COUNT 5
156 u_int32_t tag_saved_openings;
157 u_int32_t refcount;
158 struct callout_handle c_handle;
159};
160
161/*
162 * Each target is represented by an ET (Existing Target). These
163 * entries are created when a target is successfully probed with an
164 * identify, and removed when a device fails to respond after a number
165 * of retries, or a bus rescan finds the device missing.
166 */
167struct cam_et {
168 TAILQ_HEAD(, cam_ed) ed_entries;
169 TAILQ_ENTRY(cam_et) links;
170 struct cam_eb *bus;
171 target_id_t target_id;
172 u_int32_t refcount;
173 u_int generation;
174 struct timeval last_reset;
175};
176
177/*
178 * Each bus is represented by an EB (Existing Bus). These entries
179 * are created by calls to xpt_bus_register and deleted by calls to
180 * xpt_bus_deregister.
181 */
182struct cam_eb {
183 TAILQ_HEAD(, cam_et) et_entries;
184 TAILQ_ENTRY(cam_eb) links;
185 path_id_t path_id;
186 struct cam_sim *sim;
187 struct timeval last_reset;
188 u_int32_t flags;
189#define CAM_EB_RUNQ_SCHEDULED 0x01
190 u_int32_t refcount;
191 u_int generation;
192};
193
194struct cam_path {
195 struct cam_periph *periph;
196 struct cam_eb *bus;
197 struct cam_et *target;
198 struct cam_ed *device;
199};
200
201struct xpt_quirk_entry {
202 struct scsi_inquiry_pattern inq_pat;
203 u_int8_t quirks;
204#define CAM_QUIRK_NOLUNS 0x01
205#define CAM_QUIRK_NOSERIAL 0x02
206#define CAM_QUIRK_HILUNS 0x04
207#define CAM_QUIRK_NOHILUNS 0x08
208 u_int mintags;
209 u_int maxtags;
210};
211#define CAM_SCSI2_MAXLUN 8
212/*
213 * If we're not quirked to search <= the first 8 luns
214 * and we are either quirked to search above lun 8,
215 * or we're > SCSI-2, we can look for luns above lun 8.
216 */
217#define CAN_SRCH_HI(dv) \
218 (((dv->quirk->quirks & CAM_QUIRK_NOHILUNS) == 0) \
219 && ((dv->quirk->quirks & CAM_QUIRK_HILUNS) \
220 || SID_ANSI_REV(&dv->inq_data) > SCSI_REV_2))
221
222typedef enum {
223 XPT_FLAG_OPEN = 0x01
224} xpt_flags;
225
226struct xpt_softc {
227 xpt_flags flags;
228 u_int32_t generation;
229};
230
231static const char quantum[] = "QUANTUM";
232static const char sony[] = "SONY";
233static const char west_digital[] = "WDIGTL";
234static const char samsung[] = "SAMSUNG";
235static const char seagate[] = "SEAGATE";
236static const char microp[] = "MICROP";
237
238static struct xpt_quirk_entry xpt_quirk_table[] =
239{
240 {
241 /* Reports QUEUE FULL for temporary resource shortages */
242 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP39100*", "*" },
243 /*quirks*/0, /*mintags*/24, /*maxtags*/32
244 },
245 {
246 /* Reports QUEUE FULL for temporary resource shortages */
247 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP34550*", "*" },
248 /*quirks*/0, /*mintags*/24, /*maxtags*/32
249 },
250 {
251 /* Reports QUEUE FULL for temporary resource shortages */
252 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP32275*", "*" },
253 /*quirks*/0, /*mintags*/24, /*maxtags*/32
254 },
255 {
256 /* Broken tagged queuing drive */
257 { T_DIRECT, SIP_MEDIA_FIXED, microp, "4421-07*", "*" },
258 /*quirks*/0, /*mintags*/0, /*maxtags*/0
259 },
260 {
261 /* Broken tagged queuing drive */
262 { T_DIRECT, SIP_MEDIA_FIXED, "HP", "C372*", "*" },
263 /*quirks*/0, /*mintags*/0, /*maxtags*/0
264 },
265 {
266 /* Broken tagged queuing drive */
267 { T_DIRECT, SIP_MEDIA_FIXED, microp, "3391*", "x43h" },
268 /*quirks*/0, /*mintags*/0, /*maxtags*/0
269 },
270 {
271 /*
272 * Unfortunately, the Quantum Atlas III has the same
273 * problem as the Atlas II drives above.
274 * Reported by: "Johan Granlund" <johan@granlund.nu>
275 *
276 * For future reference, the drive with the problem was:
277 * QUANTUM QM39100TD-SW N1B0
278 *
279 * It's possible that Quantum will fix the problem in later
280 * firmware revisions. If that happens, the quirk entry
281 * will need to be made specific to the firmware revisions
282 * with the problem.
283 *
284 */
285 /* Reports QUEUE FULL for temporary resource shortages */
286 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "QM39100*", "*" },
287 /*quirks*/0, /*mintags*/24, /*maxtags*/32
288 },
289 {
290 /*
291 * 18 Gig Atlas III, same problem as the 9G version.
292 * Reported by: Andre Albsmeier
293 * <andre.albsmeier@mchp.siemens.de>
294 *
295 * For future reference, the drive with the problem was:
296 * QUANTUM QM318000TD-S N491
297 */
298 /* Reports QUEUE FULL for temporary resource shortages */
299 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "QM318000*", "*" },
300 /*quirks*/0, /*mintags*/24, /*maxtags*/32
301 },
302 {
303 /*
304 * Broken tagged queuing drive
305 * Reported by: Bret Ford <bford@uop.cs.uop.edu>
306 * and: Martin Renters <martin@tdc.on.ca>
307 */
308 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST410800*", "71*" },
309 /*quirks*/0, /*mintags*/0, /*maxtags*/0
310 },
311 /*
312 * The Seagate Medalist Pro drives have very poor write
313 * performance with anything more than 2 tags.
314 *
315 * Reported by: Paul van der Zwan <paulz@trantor.xs4all.nl>
316 * Drive: <SEAGATE ST36530N 1444>
317 *
318 * Reported by: Jeremy Lea <reg@shale.csir.co.za>
319 * Drive: <SEAGATE ST34520W 1281>
320 *
321 * No one has actually reported that the 9G version
322 * (ST39140*) of the Medalist Pro has the same problem, but
323 * we're assuming that it does because the 4G and 6.5G
324 * versions of the drive are broken.
325 */
326 {
327 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST34520*", "*"},
328 /*quirks*/0, /*mintags*/2, /*maxtags*/2
329 },
330 {
331 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST36530*", "*"},
332 /*quirks*/0, /*mintags*/2, /*maxtags*/2
333 },
334 {
335 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST39140*", "*"},
336 /*quirks*/0, /*mintags*/2, /*maxtags*/2
337 },
338 {
339 /*
340 * Slow when tagged queueing is enabled. Write performance
341 * steadily drops off with more and more concurrent
342 * transactions. Best sequential write performance with
343 * tagged queueing turned off and write caching turned on.
344 *
345 * PR: kern/10398
346 * Submitted by: Hideaki Okada <hokada@isl.melco.co.jp>
347 * Drive: DCAS-34330 w/ "S65A" firmware.
348 *
349 * The drive with the problem had the "S65A" firmware
350 * revision, and has also been reported (by Stephen J.
351 * Roznowski <sjr@home.net>) for a drive with the "S61A"
352 * firmware revision.
353 *
354 * Although no one has reported problems with the 2 gig
355 * version of the DCAS drive, the assumption is that it
356 * has the same problems as the 4 gig version. Therefore
357 * this quirk entries disables tagged queueing for all
358 * DCAS drives.
359 */
360 { T_DIRECT, SIP_MEDIA_FIXED, "IBM", "DCAS*", "*" },
361 /*quirks*/0, /*mintags*/0, /*maxtags*/0
362 },
363 {
364 /* Broken tagged queuing drive */
365 { T_DIRECT, SIP_MEDIA_REMOVABLE, "iomega", "jaz*", "*" },
366 /*quirks*/0, /*mintags*/0, /*maxtags*/0
367 },
368 {
369 /* Broken tagged queuing drive */
370 { T_DIRECT, SIP_MEDIA_FIXED, "CONNER", "CFP2107*", "*" },
371 /*quirks*/0, /*mintags*/0, /*maxtags*/0
372 },
373 {
374 /*
375 * Broken tagged queuing drive.
376 * Submitted by:
377 * NAKAJI Hiroyuki <nakaji@zeisei.dpri.kyoto-u.ac.jp>
378 * in PR kern/9535
379 */
380 { T_DIRECT, SIP_MEDIA_FIXED, samsung, "WN34324U*", "*" },
381 /*quirks*/0, /*mintags*/0, /*maxtags*/0
382 },
383 {
384 /*
385 * Slow when tagged queueing is enabled. (1.5MB/sec versus
386 * 8MB/sec.)
387 * Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
388 * Best performance with these drives is achieved with
389 * tagged queueing turned off, and write caching turned on.
390 */
391 { T_DIRECT, SIP_MEDIA_FIXED, west_digital, "WDE*", "*" },
392 /*quirks*/0, /*mintags*/0, /*maxtags*/0
393 },
394 {
395 /*
396 * Slow when tagged queueing is enabled. (1.5MB/sec versus
397 * 8MB/sec.)
398 * Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
399 * Best performance with these drives is achieved with
400 * tagged queueing turned off, and write caching turned on.
401 */
402 { T_DIRECT, SIP_MEDIA_FIXED, west_digital, "ENTERPRISE", "*" },
403 /*quirks*/0, /*mintags*/0, /*maxtags*/0
404 },
405 {
406 /*
407 * Doesn't handle queue full condition correctly,
408 * so we need to limit maxtags to what the device
409 * can handle instead of determining this automatically.
410 */
411 { T_DIRECT, SIP_MEDIA_FIXED, samsung, "WN321010S*", "*" },
412 /*quirks*/0, /*mintags*/2, /*maxtags*/32
413 },
414 {
415 /* Really only one LUN */
416 { T_ENCLOSURE, SIP_MEDIA_FIXED, "SUN", "SENA", "*" },
417 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
418 },
419 {
420 /* I can't believe we need a quirk for DPT volumes. */
421 { T_ANY, SIP_MEDIA_FIXED|SIP_MEDIA_REMOVABLE, "DPT", "*", "*" },
422 CAM_QUIRK_NOSERIAL|CAM_QUIRK_NOLUNS,
423 /*mintags*/0, /*maxtags*/255
424 },
425 {
426 /*
427 * Many Sony CDROM drives don't like multi-LUN probing.
428 */
429 { T_CDROM, SIP_MEDIA_REMOVABLE, sony, "CD-ROM CDU*", "*" },
430 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
431 },
432 {
433 /*
434 * This drive doesn't like multiple LUN probing.
435 * Submitted by: Parag Patel <parag@cgt.com>
436 */
437 { T_WORM, SIP_MEDIA_REMOVABLE, sony, "CD-R CDU9*", "*" },
438 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
439 },
440 {
441 { T_WORM, SIP_MEDIA_REMOVABLE, "YAMAHA", "CDR100*", "*" },
442 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
443 },
444 {
445 /*
446 * The 8200 doesn't like multi-lun probing, and probably
447 * don't like serial number requests either.
448 */
449 {
450 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "EXABYTE",
451 "EXB-8200*", "*"
452 },
453 CAM_QUIRK_NOSERIAL|CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
454 },
455 {
456 /*
457 * Let's try the same as above, but for a drive that says
458 * it's an IPL-6860 but is actually an EXB 8200.
459 */
460 {
461 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "EXABYTE",
462 "IPL-6860*", "*"
463 },
464 CAM_QUIRK_NOSERIAL|CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
465 },
466 {
467 /*
468 * These Hitachi drives don't like multi-lun probing.
469 * The PR submitter has a DK319H, but says that the Linux
470 * kernel has a similar work-around for the DK312 and DK314,
471 * so all DK31* drives are quirked here.
472 * PR: misc/18793
473 * Submitted by: Paul Haddad <paul@pth.com>
474 */
475 { T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "DK31*", "*" },
476 CAM_QUIRK_NOLUNS, /*mintags*/2, /*maxtags*/255
477 },
478 {
479 /*
480 * The Hitachi CJ series with J8A8 firmware apparantly has
481 * problems with tagged commands.
482 * PR: 23536
483 * Reported by: amagai@nue.org
484 */
485 { T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "DK32CJ*", "J8A8" },
486 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
487 },
488 {
489 /*
490 * These are the large storage arrays.
491 * Submitted by: William Carrel <william.carrel@infospace.com>
492 */
493 { T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "OPEN*", "*" },
494 CAM_QUIRK_HILUNS, 2, 1024
495 },
496 {
497 /*
498 * This old revision of the TDC3600 is also SCSI-1, and
499 * hangs upon serial number probing.
500 */
501 {
502 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
503 " TDC 3600", "U07:"
504 },
505 CAM_QUIRK_NOSERIAL, /*mintags*/0, /*maxtags*/0
506 },
507 {
508 /*
509 * Maxtor Personal Storage 3000XT (Firewire)
510 * hangs upon serial number probing.
511 */
512 {
513 T_DIRECT, SIP_MEDIA_FIXED, "Maxtor",
514 "1394 storage", "*"
515 },
516 CAM_QUIRK_NOSERIAL, /*mintags*/0, /*maxtags*/0
517 },
518 {
519 /*
520 * Would repond to all LUNs if asked for.
521 */
522 {
523 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "CALIPER",
524 "CP150", "*"
525 },
526 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
527 },
528 {
529 /*
530 * Would repond to all LUNs if asked for.
531 */
532 {
533 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY",
534 "96X2*", "*"
535 },
536 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
537 },
538 {
539 /* Submitted by: Matthew Dodd <winter@jurai.net> */
540 { T_PROCESSOR, SIP_MEDIA_FIXED, "Cabletrn", "EA41*", "*" },
541 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
542 },
543 {
544 /* Submitted by: Matthew Dodd <winter@jurai.net> */
545 { T_PROCESSOR, SIP_MEDIA_FIXED, "CABLETRN", "EA41*", "*" },
546 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
547 },
548 {
549 /* TeraSolutions special settings for TRC-22 RAID */
550 { T_DIRECT, SIP_MEDIA_FIXED, "TERASOLU", "TRC-22", "*" },
551 /*quirks*/0, /*mintags*/55, /*maxtags*/255
552 },
553 {
554 /* Veritas Storage Appliance */
555 { T_DIRECT, SIP_MEDIA_FIXED, "VERITAS", "*", "*" },
556 CAM_QUIRK_HILUNS, /*mintags*/2, /*maxtags*/1024
557 },
558 {
559 /*
560 * Would respond to all LUNs. Device type and removable
561 * flag are jumper-selectable.
562 */
563 { T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED, "MaxOptix",
564 "Tahiti 1", "*"
565 },
566 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
567 },
568 {
569 /* EasyRAID E5A aka. areca ARC-6010 */
570 { T_DIRECT, SIP_MEDIA_FIXED, "easyRAID", "*", "*" },
571 CAM_QUIRK_NOHILUNS, /*mintags*/2, /*maxtags*/255
572 },
573 {
574 /* Default tagged queuing parameters for all devices */
575 {
576 T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED,
577 /*vendor*/"*", /*product*/"*", /*revision*/"*"
578 },
579 /*quirks*/0, /*mintags*/2, /*maxtags*/255
580 },
581};
582
583static const int xpt_quirk_table_size =
584 sizeof(xpt_quirk_table) / sizeof(*xpt_quirk_table);
585
586typedef enum {
587 DM_RET_COPY = 0x01,
588 DM_RET_FLAG_MASK = 0x0f,
589 DM_RET_NONE = 0x00,
590 DM_RET_STOP = 0x10,
591 DM_RET_DESCEND = 0x20,
592 DM_RET_ERROR = 0x30,
593 DM_RET_ACTION_MASK = 0xf0
594} dev_match_ret;
595
596typedef enum {
597 XPT_DEPTH_BUS,
598 XPT_DEPTH_TARGET,
599 XPT_DEPTH_DEVICE,
600 XPT_DEPTH_PERIPH
601} xpt_traverse_depth;
602
603struct xpt_traverse_config {
604 xpt_traverse_depth depth;
605 void *tr_func;
606 void *tr_arg;
607};
608
609typedef int xpt_busfunc_t (struct cam_eb *bus, void *arg);
610typedef int xpt_targetfunc_t (struct cam_et *target, void *arg);
611typedef int xpt_devicefunc_t (struct cam_ed *device, void *arg);
612typedef int xpt_periphfunc_t (struct cam_periph *periph, void *arg);
613typedef int xpt_pdrvfunc_t (struct periph_driver **pdrv, void *arg);
614
615/* Transport layer configuration information */
616static struct xpt_softc xsoftc;
617
618/* Queues for our software interrupt handler */
619typedef TAILQ_HEAD(cam_isrq, ccb_hdr) cam_isrq_t;
620static cam_isrq_t cam_bioq;
621static struct mtx cam_bioq_lock;
622
623/* "Pool" of inactive ccbs managed by xpt_alloc_ccb and xpt_free_ccb */
624static SLIST_HEAD(,ccb_hdr) ccb_freeq;
625static u_int xpt_max_ccbs; /*
626 * Maximum size of ccb pool. Modified as
627 * devices are added/removed or have their
628 * opening counts changed.
629 */
630static u_int xpt_ccb_count; /* Current count of allocated ccbs */
631
632struct cam_periph *xpt_periph;
633
634static periph_init_t xpt_periph_init;
635
636static periph_init_t probe_periph_init;
637
638static struct periph_driver xpt_driver =
639{
640 xpt_periph_init, "xpt",
641 TAILQ_HEAD_INITIALIZER(xpt_driver.units)
642};
643
644static struct periph_driver probe_driver =
645{
646 probe_periph_init, "probe",
647 TAILQ_HEAD_INITIALIZER(probe_driver.units)
648};
649
650PERIPHDRIVER_DECLARE(xpt, xpt_driver);
651PERIPHDRIVER_DECLARE(probe, probe_driver);
652
653
654static d_open_t xptopen;
655static d_close_t xptclose;
656static d_ioctl_t xptioctl;
657
658static struct cdevsw xpt_cdevsw = {
659 .d_version = D_VERSION,
660 .d_flags = D_NEEDGIANT,
661 .d_open = xptopen,
662 .d_close = xptclose,
663 .d_ioctl = xptioctl,
664 .d_name = "xpt",
665};
666
667static struct intr_config_hook *xpt_config_hook;
668
669/* Registered busses */
670static TAILQ_HEAD(,cam_eb) xpt_busses;
671static u_int bus_generation;
672
673/* Storage for debugging datastructures */
674#ifdef CAMDEBUG
675struct cam_path *cam_dpath;
676u_int32_t cam_dflags;
677u_int32_t cam_debug_delay;
678#endif
679
680/* Pointers to software interrupt handlers */
681static void *cambio_ih;
682
683#if defined(CAM_DEBUG_FLAGS) && !defined(CAMDEBUG)
684#error "You must have options CAMDEBUG to use options CAM_DEBUG_FLAGS"
685#endif
686
687/*
688 * In order to enable the CAM_DEBUG_* options, the user must have CAMDEBUG
689 * enabled. Also, the user must have either none, or all of CAM_DEBUG_BUS,
690 * CAM_DEBUG_TARGET, and CAM_DEBUG_LUN specified.
691 */
692#if defined(CAM_DEBUG_BUS) || defined(CAM_DEBUG_TARGET) \
693 || defined(CAM_DEBUG_LUN)
694#ifdef CAMDEBUG
695#if !defined(CAM_DEBUG_BUS) || !defined(CAM_DEBUG_TARGET) \
696 || !defined(CAM_DEBUG_LUN)
697#error "You must define all or none of CAM_DEBUG_BUS, CAM_DEBUG_TARGET \
698 and CAM_DEBUG_LUN"
699#endif /* !CAM_DEBUG_BUS || !CAM_DEBUG_TARGET || !CAM_DEBUG_LUN */
700#else /* !CAMDEBUG */
701#error "You must use options CAMDEBUG if you use the CAM_DEBUG_* options"
702#endif /* CAMDEBUG */
703#endif /* CAM_DEBUG_BUS || CAM_DEBUG_TARGET || CAM_DEBUG_LUN */
704
705/* Our boot-time initialization hook */
706static int cam_module_event_handler(module_t, int /*modeventtype_t*/, void *);
707
708static moduledata_t cam_moduledata = {
709 "cam",
710 cam_module_event_handler,
711 NULL
712};
713
714static void xpt_init(void *);
715
716DECLARE_MODULE(cam, cam_moduledata, SI_SUB_CONFIGURE, SI_ORDER_SECOND);
717MODULE_VERSION(cam, 1);
718
719
720static cam_status xpt_compile_path(struct cam_path *new_path,
721 struct cam_periph *perph,
722 path_id_t path_id,
723 target_id_t target_id,
724 lun_id_t lun_id);
725
726static void xpt_release_path(struct cam_path *path);
727
728static void xpt_async_bcast(struct async_list *async_head,
729 u_int32_t async_code,
730 struct cam_path *path,
731 void *async_arg);
732static void xpt_dev_async(u_int32_t async_code,
733 struct cam_eb *bus,
734 struct cam_et *target,
735 struct cam_ed *device,
736 void *async_arg);
737static path_id_t xptnextfreepathid(void);
738static path_id_t xptpathid(const char *sim_name, int sim_unit, int sim_bus);
739static union ccb *xpt_get_ccb(struct cam_ed *device);
740static int xpt_schedule_dev(struct camq *queue, cam_pinfo *dev_pinfo,
741 u_int32_t new_priority);
742static void xpt_run_dev_allocq(struct cam_eb *bus);
743static void xpt_run_dev_sendq(struct cam_eb *bus);
744static timeout_t xpt_release_devq_timeout;
745static timeout_t xpt_release_simq_timeout;
746static void xpt_release_bus(struct cam_eb *bus);
747static void xpt_release_devq_device(struct cam_ed *dev, u_int count,
748 int run_queue);
749static struct cam_et*
750 xpt_alloc_target(struct cam_eb *bus, target_id_t target_id);
751static void xpt_release_target(struct cam_eb *bus, struct cam_et *target);
752static struct cam_ed*
753 xpt_alloc_device(struct cam_eb *bus, struct cam_et *target,
754 lun_id_t lun_id);
755static void xpt_release_device(struct cam_eb *bus, struct cam_et *target,
756 struct cam_ed *device);
757static u_int32_t xpt_dev_ccbq_resize(struct cam_path *path, int newopenings);
758static struct cam_eb*
759 xpt_find_bus(path_id_t path_id);
760static struct cam_et*
761 xpt_find_target(struct cam_eb *bus, target_id_t target_id);
762static struct cam_ed*
763 xpt_find_device(struct cam_et *target, lun_id_t lun_id);
764static void xpt_scan_bus(struct cam_periph *periph, union ccb *ccb);
765static void xpt_scan_lun(struct cam_periph *periph,
766 struct cam_path *path, cam_flags flags,
767 union ccb *ccb);
768static void xptscandone(struct cam_periph *periph, union ccb *done_ccb);
769static xpt_busfunc_t xptconfigbuscountfunc;
770static xpt_busfunc_t xptconfigfunc;
771static void xpt_config(void *arg);
772static xpt_devicefunc_t xptpassannouncefunc;
773static void xpt_finishconfig(struct cam_periph *periph, union ccb *ccb);
774static void xptaction(struct cam_sim *sim, union ccb *work_ccb);
775static void xptpoll(struct cam_sim *sim);
776static void camisr(void *);
777#if 0
778static void xptstart(struct cam_periph *periph, union ccb *work_ccb);
779static void xptasync(struct cam_periph *periph,
780 u_int32_t code, cam_path *path);
781#endif
782static dev_match_ret xptbusmatch(struct dev_match_pattern *patterns,
783 u_int num_patterns, struct cam_eb *bus);
784static dev_match_ret xptdevicematch(struct dev_match_pattern *patterns,
785 u_int num_patterns,
786 struct cam_ed *device);
787static dev_match_ret xptperiphmatch(struct dev_match_pattern *patterns,
788 u_int num_patterns,
789 struct cam_periph *periph);
790static xpt_busfunc_t xptedtbusfunc;
791static xpt_targetfunc_t xptedttargetfunc;
792static xpt_devicefunc_t xptedtdevicefunc;
793static xpt_periphfunc_t xptedtperiphfunc;
794static xpt_pdrvfunc_t xptplistpdrvfunc;
795static xpt_periphfunc_t xptplistperiphfunc;
796static int xptedtmatch(struct ccb_dev_match *cdm);
797static int xptperiphlistmatch(struct ccb_dev_match *cdm);
798static int xptbustraverse(struct cam_eb *start_bus,
799 xpt_busfunc_t *tr_func, void *arg);
800static int xpttargettraverse(struct cam_eb *bus,
801 struct cam_et *start_target,
802 xpt_targetfunc_t *tr_func, void *arg);
803static int xptdevicetraverse(struct cam_et *target,
804 struct cam_ed *start_device,
805 xpt_devicefunc_t *tr_func, void *arg);
806static int xptperiphtraverse(struct cam_ed *device,
807 struct cam_periph *start_periph,
808 xpt_periphfunc_t *tr_func, void *arg);
809static int xptpdrvtraverse(struct periph_driver **start_pdrv,
810 xpt_pdrvfunc_t *tr_func, void *arg);
811static int xptpdperiphtraverse(struct periph_driver **pdrv,
812 struct cam_periph *start_periph,
813 xpt_periphfunc_t *tr_func,
814 void *arg);
815static xpt_busfunc_t xptdefbusfunc;
816static xpt_targetfunc_t xptdeftargetfunc;
817static xpt_devicefunc_t xptdefdevicefunc;
818static xpt_periphfunc_t xptdefperiphfunc;
819static int xpt_for_all_busses(xpt_busfunc_t *tr_func, void *arg);
820#ifdef notusedyet
821static int xpt_for_all_targets(xpt_targetfunc_t *tr_func,
822 void *arg);
823#endif
824static int xpt_for_all_devices(xpt_devicefunc_t *tr_func,
825 void *arg);
826#ifdef notusedyet
827static int xpt_for_all_periphs(xpt_periphfunc_t *tr_func,
828 void *arg);
829#endif
830static xpt_devicefunc_t xptsetasyncfunc;
831static xpt_busfunc_t xptsetasyncbusfunc;
832static cam_status xptregister(struct cam_periph *periph,
833 void *arg);
834static cam_status proberegister(struct cam_periph *periph,
835 void *arg);
836static void probeschedule(struct cam_periph *probe_periph);
837static void probestart(struct cam_periph *periph, union ccb *start_ccb);
838static void proberequestdefaultnegotiation(struct cam_periph *periph);
839static void probedone(struct cam_periph *periph, union ccb *done_ccb);
840static void probecleanup(struct cam_periph *periph);
841static void xpt_find_quirk(struct cam_ed *device);
842#ifdef CAM_NEW_TRAN_CODE
843static void xpt_devise_transport(struct cam_path *path);
844#endif /* CAM_NEW_TRAN_CODE */
845static void xpt_set_transfer_settings(struct ccb_trans_settings *cts,
846 struct cam_ed *device,
847 int async_update);
848static void xpt_toggle_tags(struct cam_path *path);
849static void xpt_start_tags(struct cam_path *path);
850static __inline int xpt_schedule_dev_allocq(struct cam_eb *bus,
851 struct cam_ed *dev);
852static __inline int xpt_schedule_dev_sendq(struct cam_eb *bus,
853 struct cam_ed *dev);
854static __inline int periph_is_queued(struct cam_periph *periph);
855static __inline int device_is_alloc_queued(struct cam_ed *device);
856static __inline int device_is_send_queued(struct cam_ed *device);
857static __inline int dev_allocq_is_runnable(struct cam_devq *devq);
858
859static __inline int
860xpt_schedule_dev_allocq(struct cam_eb *bus, struct cam_ed *dev)
861{
862 int retval;
863
864 if (dev->ccbq.devq_openings > 0) {
865 if ((dev->flags & CAM_DEV_RESIZE_QUEUE_NEEDED) != 0) {
866 cam_ccbq_resize(&dev->ccbq,
867 dev->ccbq.dev_openings
868 + dev->ccbq.dev_active);
869 dev->flags &= ~CAM_DEV_RESIZE_QUEUE_NEEDED;
870 }
871 /*
872 * The priority of a device waiting for CCB resources
873 * is that of the the highest priority peripheral driver
874 * enqueued.
875 */
876 retval = xpt_schedule_dev(&bus->sim->devq->alloc_queue,
877 &dev->alloc_ccb_entry.pinfo,
878 CAMQ_GET_HEAD(&dev->drvq)->priority);
879 } else {
880 retval = 0;
881 }
882
883 return (retval);
884}
885
886static __inline int
887xpt_schedule_dev_sendq(struct cam_eb *bus, struct cam_ed *dev)
888{
889 int retval;
890
891 if (dev->ccbq.dev_openings > 0) {
892 /*
893 * The priority of a device waiting for controller
894 * resources is that of the the highest priority CCB
895 * enqueued.
896 */
897 retval =
898 xpt_schedule_dev(&bus->sim->devq->send_queue,
899 &dev->send_ccb_entry.pinfo,
900 CAMQ_GET_HEAD(&dev->ccbq.queue)->priority);
901 } else {
902 retval = 0;
903 }
904 return (retval);
905}
906
907static __inline int
908periph_is_queued(struct cam_periph *periph)
909{
910 return (periph->pinfo.index != CAM_UNQUEUED_INDEX);
911}
912
913static __inline int
914device_is_alloc_queued(struct cam_ed *device)
915{
916 return (device->alloc_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX);
917}
918
919static __inline int
920device_is_send_queued(struct cam_ed *device)
921{
922 return (device->send_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX);
923}
924
925static __inline int
926dev_allocq_is_runnable(struct cam_devq *devq)
927{
928 /*
929 * Have work to do.
930 * Have space to do more work.
931 * Allowed to do work.
932 */
933 return ((devq->alloc_queue.qfrozen_cnt == 0)
934 && (devq->alloc_queue.entries > 0)
935 && (devq->alloc_openings > 0));
936}
937
938static void
939xpt_periph_init()
940{
941 make_dev(&xpt_cdevsw, 0, UID_ROOT, GID_OPERATOR, 0600, "xpt0");
942}
943
944static void
945probe_periph_init()
946{
947}
948
949
950static void
951xptdone(struct cam_periph *periph, union ccb *done_ccb)
952{
953 /* Caller will release the CCB */
954 wakeup(&done_ccb->ccb_h.cbfcnp);
955}
956
957static int
958xptopen(struct cdev *dev, int flags, int fmt, struct thread *td)
959{
960 int unit;
961
962 unit = minor(dev) & 0xff;
963
964 /*
965 * Only allow read-write access.
966 */
967 if (((flags & FWRITE) == 0) || ((flags & FREAD) == 0))
968 return(EPERM);
969
970 /*
971 * We don't allow nonblocking access.
972 */
973 if ((flags & O_NONBLOCK) != 0) {
974 printf("xpt%d: can't do nonblocking access\n", unit);
975 return(ENODEV);
976 }
977
978 /*
979 * We only have one transport layer right now. If someone accesses
980 * us via something other than minor number 1, point out their
981 * mistake.
982 */
983 if (unit != 0) {
984 printf("xptopen: got invalid xpt unit %d\n", unit);
985 return(ENXIO);
986 }
987
988 /* Mark ourselves open */
989 xsoftc.flags |= XPT_FLAG_OPEN;
990
991 return(0);
992}
993
994static int
995xptclose(struct cdev *dev, int flag, int fmt, struct thread *td)
996{
997 int unit;
998
999 unit = minor(dev) & 0xff;
1000
1001 /*
1002 * We only have one transport layer right now. If someone accesses
1003 * us via something other than minor number 1, point out their
1004 * mistake.
1005 */
1006 if (unit != 0) {
1007 printf("xptclose: got invalid xpt unit %d\n", unit);
1008 return(ENXIO);
1009 }
1010
1011 /* Mark ourselves closed */
1012 xsoftc.flags &= ~XPT_FLAG_OPEN;
1013
1014 return(0);
1015}
1016
1017static int
1018xptioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td)
1019{
1020 int unit, error;
1021
1022 error = 0;
1023 unit = minor(dev) & 0xff;
1024
1025 /*
1026 * We only have one transport layer right now. If someone accesses
1027 * us via something other than minor number 1, point out their
1028 * mistake.
1029 */
1030 if (unit != 0) {
1031 printf("xptioctl: got invalid xpt unit %d\n", unit);
1032 return(ENXIO);
1033 }
1034
1035 switch(cmd) {
1036 /*
1037 * For the transport layer CAMIOCOMMAND ioctl, we really only want
1038 * to accept CCB types that don't quite make sense to send through a
1039 * passthrough driver. XPT_PATH_INQ is an exception to this, as stated
1040 * in the CAM spec.
1041 */
1042 case CAMIOCOMMAND: {
1043 union ccb *ccb;
1044 union ccb *inccb;
1045
1046 inccb = (union ccb *)addr;
1047
1048 switch(inccb->ccb_h.func_code) {
1049 case XPT_SCAN_BUS:
1050 case XPT_RESET_BUS:
1051 if ((inccb->ccb_h.target_id != CAM_TARGET_WILDCARD)
1052 || (inccb->ccb_h.target_lun != CAM_LUN_WILDCARD)) {
1053 error = EINVAL;
1054 break;
1055 }
1056 /* FALLTHROUGH */
1057 case XPT_PATH_INQ:
1058 case XPT_ENG_INQ:
1059 case XPT_SCAN_LUN:
1060
1061 ccb = xpt_alloc_ccb();
1062
1063 /*
1064 * Create a path using the bus, target, and lun the
1065 * user passed in.
1066 */
1067 if (xpt_create_path(&ccb->ccb_h.path, xpt_periph,
1068 inccb->ccb_h.path_id,
1069 inccb->ccb_h.target_id,
1070 inccb->ccb_h.target_lun) !=
1071 CAM_REQ_CMP){
1072 error = EINVAL;
1073 xpt_free_ccb(ccb);
1074 break;
1075 }
1076 /* Ensure all of our fields are correct */
1077 xpt_setup_ccb(&ccb->ccb_h, ccb->ccb_h.path,
1078 inccb->ccb_h.pinfo.priority);
1079 xpt_merge_ccb(ccb, inccb);
1080 ccb->ccb_h.cbfcnp = xptdone;
1081 cam_periph_runccb(ccb, NULL, 0, 0, NULL);
1082 bcopy(ccb, inccb, sizeof(union ccb));
1083 xpt_free_path(ccb->ccb_h.path);
1084 xpt_free_ccb(ccb);
1085 break;
1086
1087 case XPT_DEBUG: {
1088 union ccb ccb;
1089
1090 /*
1091 * This is an immediate CCB, so it's okay to
1092 * allocate it on the stack.
1093 */
1094
1095 /*
1096 * Create a path using the bus, target, and lun the
1097 * user passed in.
1098 */
1099 if (xpt_create_path(&ccb.ccb_h.path, xpt_periph,
1100 inccb->ccb_h.path_id,
1101 inccb->ccb_h.target_id,
1102 inccb->ccb_h.target_lun) !=
1103 CAM_REQ_CMP){
1104 error = EINVAL;
1105 break;
1106 }
1107 /* Ensure all of our fields are correct */
1108 xpt_setup_ccb(&ccb.ccb_h, ccb.ccb_h.path,
1109 inccb->ccb_h.pinfo.priority);
1110 xpt_merge_ccb(&ccb, inccb);
1111 ccb.ccb_h.cbfcnp = xptdone;
1112 xpt_action(&ccb);
1113 bcopy(&ccb, inccb, sizeof(union ccb));
1114 xpt_free_path(ccb.ccb_h.path);
1115 break;
1116
1117 }
1118 case XPT_DEV_MATCH: {
1119 struct cam_periph_map_info mapinfo;
1120 struct cam_path *old_path;
1121
1122 /*
1123 * We can't deal with physical addresses for this
1124 * type of transaction.
1125 */
1126 if (inccb->ccb_h.flags & CAM_DATA_PHYS) {
1127 error = EINVAL;
1128 break;
1129 }
1130
1131 /*
1132 * Save this in case the caller had it set to
1133 * something in particular.
1134 */
1135 old_path = inccb->ccb_h.path;
1136
1137 /*
1138 * We really don't need a path for the matching
1139 * code. The path is needed because of the
1140 * debugging statements in xpt_action(). They
1141 * assume that the CCB has a valid path.
1142 */
1143 inccb->ccb_h.path = xpt_periph->path;
1144
1145 bzero(&mapinfo, sizeof(mapinfo));
1146
1147 /*
1148 * Map the pattern and match buffers into kernel
1149 * virtual address space.
1150 */
1151 error = cam_periph_mapmem(inccb, &mapinfo);
1152
1153 if (error) {
1154 inccb->ccb_h.path = old_path;
1155 break;
1156 }
1157
1158 /*
1159 * This is an immediate CCB, we can send it on directly.
1160 */
1161 xpt_action(inccb);
1162
1163 /*
1164 * Map the buffers back into user space.
1165 */
1166 cam_periph_unmapmem(inccb, &mapinfo);
1167
1168 inccb->ccb_h.path = old_path;
1169
1170 error = 0;
1171 break;
1172 }
1173 default:
1174 error = ENOTSUP;
1175 break;
1176 }
1177 break;
1178 }
1179 /*
1180 * This is the getpassthru ioctl. It takes a XPT_GDEVLIST ccb as input,
1181 * with the periphal driver name and unit name filled in. The other
1182 * fields don't really matter as input. The passthrough driver name
1183 * ("pass"), and unit number are passed back in the ccb. The current
1184 * device generation number, and the index into the device peripheral
1185 * driver list, and the status are also passed back. Note that
1186 * since we do everything in one pass, unlike the XPT_GDEVLIST ccb,
1187 * we never return a status of CAM_GDEVLIST_LIST_CHANGED. It is
1188 * (or rather should be) impossible for the device peripheral driver
1189 * list to change since we look at the whole thing in one pass, and
1190 * we do it with splcam protection.
1191 *
1192 */
1193 case CAMGETPASSTHRU: {
1194 union ccb *ccb;
1195 struct cam_periph *periph;
1196 struct periph_driver **p_drv;
1197 char *name;
1198 u_int unit;
1199 u_int cur_generation;
1200 int base_periph_found;
1201 int splbreaknum;
1202 int s;
1203
1204 ccb = (union ccb *)addr;
1205 unit = ccb->cgdl.unit_number;
1206 name = ccb->cgdl.periph_name;
1207 /*
1208 * Every 100 devices, we want to drop our spl protection to
1209 * give the software interrupt handler a chance to run.
1210 * Most systems won't run into this check, but this should
1211 * avoid starvation in the software interrupt handler in
1212 * large systems.
1213 */
1214 splbreaknum = 100;
1215
1216 ccb = (union ccb *)addr;
1217
1218 base_periph_found = 0;
1219
1220 /*
1221 * Sanity check -- make sure we don't get a null peripheral
1222 * driver name.
1223 */
1224 if (*ccb->cgdl.periph_name == '\0') {
1225 error = EINVAL;
1226 break;
1227 }
1228
1229 /* Keep the list from changing while we traverse it */
1230 s = splcam();
1231ptstartover:
1232 cur_generation = xsoftc.generation;
1233
1234 /* first find our driver in the list of drivers */
1235 for (p_drv = periph_drivers; *p_drv != NULL; p_drv++)
1236 if (strcmp((*p_drv)->driver_name, name) == 0)
1237 break;
1238
1239 if (*p_drv == NULL) {
1240 splx(s);
1241 ccb->ccb_h.status = CAM_REQ_CMP_ERR;
1242 ccb->cgdl.status = CAM_GDEVLIST_ERROR;
1243 *ccb->cgdl.periph_name = '\0';
1244 ccb->cgdl.unit_number = 0;
1245 error = ENOENT;
1246 break;
1247 }
1248
1249 /*
1250 * Run through every peripheral instance of this driver
1251 * and check to see whether it matches the unit passed
1252 * in by the user. If it does, get out of the loops and
1253 * find the passthrough driver associated with that
1254 * peripheral driver.
1255 */
1256 for (periph = TAILQ_FIRST(&(*p_drv)->units); periph != NULL;
1257 periph = TAILQ_NEXT(periph, unit_links)) {
1258
1259 if (periph->unit_number == unit) {
1260 break;
1261 } else if (--splbreaknum == 0) {
1262 splx(s);
1263 s = splcam();
1264 splbreaknum = 100;
1265 if (cur_generation != xsoftc.generation)
1266 goto ptstartover;
1267 }
1268 }
1269 /*
1270 * If we found the peripheral driver that the user passed
1271 * in, go through all of the peripheral drivers for that
1272 * particular device and look for a passthrough driver.
1273 */
1274 if (periph != NULL) {
1275 struct cam_ed *device;
1276 int i;
1277
1278 base_periph_found = 1;
1279 device = periph->path->device;
1280 for (i = 0, periph = SLIST_FIRST(&device->periphs);
1281 periph != NULL;
1282 periph = SLIST_NEXT(periph, periph_links), i++) {
1283 /*
1284 * Check to see whether we have a
1285 * passthrough device or not.
1286 */
1287 if (strcmp(periph->periph_name, "pass") == 0) {
1288 /*
1289 * Fill in the getdevlist fields.
1290 */
1291 strcpy(ccb->cgdl.periph_name,
1292 periph->periph_name);
1293 ccb->cgdl.unit_number =
1294 periph->unit_number;
1295 if (SLIST_NEXT(periph, periph_links))
1296 ccb->cgdl.status =
1297 CAM_GDEVLIST_MORE_DEVS;
1298 else
1299 ccb->cgdl.status =
1300 CAM_GDEVLIST_LAST_DEVICE;
1301 ccb->cgdl.generation =
1302 device->generation;
1303 ccb->cgdl.index = i;
1304 /*
1305 * Fill in some CCB header fields
1306 * that the user may want.
1307 */
1308 ccb->ccb_h.path_id =
1309 periph->path->bus->path_id;
1310 ccb->ccb_h.target_id =
1311 periph->path->target->target_id;
1312 ccb->ccb_h.target_lun =
1313 periph->path->device->lun_id;
1314 ccb->ccb_h.status = CAM_REQ_CMP;
1315 break;
1316 }
1317 }
1318 }
1319
1320 /*
1321 * If the periph is null here, one of two things has
1322 * happened. The first possibility is that we couldn't
1323 * find the unit number of the particular peripheral driver
1324 * that the user is asking about. e.g. the user asks for
1325 * the passthrough driver for "da11". We find the list of
1326 * "da" peripherals all right, but there is no unit 11.
1327 * The other possibility is that we went through the list
1328 * of peripheral drivers attached to the device structure,
1329 * but didn't find one with the name "pass". Either way,
1330 * we return ENOENT, since we couldn't find something.
1331 */
1332 if (periph == NULL) {
1333 ccb->ccb_h.status = CAM_REQ_CMP_ERR;
1334 ccb->cgdl.status = CAM_GDEVLIST_ERROR;
1335 *ccb->cgdl.periph_name = '\0';
1336 ccb->cgdl.unit_number = 0;
1337 error = ENOENT;
1338 /*
1339 * It is unfortunate that this is even necessary,
1340 * but there are many, many clueless users out there.
1341 * If this is true, the user is looking for the
1342 * passthrough driver, but doesn't have one in his
1343 * kernel.
1344 */
1345 if (base_periph_found == 1) {
1346 printf("xptioctl: pass driver is not in the "
1347 "kernel\n");
1348 printf("xptioctl: put \"device pass0\" in "
1349 "your kernel config file\n");
1350 }
1351 }
1352 splx(s);
1353 break;
1354 }
1355 default:
1356 error = ENOTTY;
1357 break;
1358 }
1359
1360 return(error);
1361}
1362
1363static int
1364cam_module_event_handler(module_t mod, int what, void *arg)
1365{
1366 if (what == MOD_LOAD) {
1367 xpt_init(NULL);
1368 } else if (what == MOD_UNLOAD) {
1369 return EBUSY;
1370 } else {
1371 return EOPNOTSUPP;
1372 }
1373
1374 return 0;
1375}
1376
1377/* Functions accessed by the peripheral drivers */
1378static void
1379xpt_init(dummy)
1380 void *dummy;
1381{
1382 struct cam_sim *xpt_sim;
1383 struct cam_path *path;
1384 struct cam_devq *devq;
1385 cam_status status;
1386
1387 TAILQ_INIT(&xpt_busses);
1388 TAILQ_INIT(&cam_bioq);
1389 SLIST_INIT(&ccb_freeq);
1390 STAILQ_INIT(&highpowerq);
1391
1392 mtx_init(&cam_bioq_lock, "CAM BIOQ lock", NULL, MTX_DEF);
1393
1394 /*
1395 * The xpt layer is, itself, the equivelent of a SIM.
1396 * Allow 16 ccbs in the ccb pool for it. This should
1397 * give decent parallelism when we probe busses and
1398 * perform other XPT functions.
1399 */
1400 devq = cam_simq_alloc(16);
1401 xpt_sim = cam_sim_alloc(xptaction,
1402 xptpoll,
1403 "xpt",
1404 /*softc*/NULL,
1405 /*unit*/0,
1406 /*max_dev_transactions*/0,
1407 /*max_tagged_dev_transactions*/0,
1408 devq);
1409 xpt_max_ccbs = 16;
1410
1411 xpt_bus_register(xpt_sim, /*bus #*/0);
1412
1413 /*
1414 * Looking at the XPT from the SIM layer, the XPT is
1415 * the equivelent of a peripheral driver. Allocate
1416 * a peripheral driver entry for us.
1417 */
1418 if ((status = xpt_create_path(&path, NULL, CAM_XPT_PATH_ID,
1419 CAM_TARGET_WILDCARD,
1420 CAM_LUN_WILDCARD)) != CAM_REQ_CMP) {
1421 printf("xpt_init: xpt_create_path failed with status %#x,"
1422 " failing attach\n", status);
1423 return;
1424 }
1425
1426 cam_periph_alloc(xptregister, NULL, NULL, NULL, "xpt", CAM_PERIPH_BIO,
1427 path, NULL, 0, NULL);
1428 xpt_free_path(path);
1429
1430 xpt_sim->softc = xpt_periph;
1431
1432 /*
1433 * Register a callback for when interrupts are enabled.
1434 */
1435 xpt_config_hook =
1436 (struct intr_config_hook *)malloc(sizeof(struct intr_config_hook),
1437 M_TEMP, M_NOWAIT | M_ZERO);
1438 if (xpt_config_hook == NULL) {
1439 printf("xpt_init: Cannot malloc config hook "
1440 "- failing attach\n");
1441 return;
1442 }
1443
1444 xpt_config_hook->ich_func = xpt_config;
1445 if (config_intrhook_establish(xpt_config_hook) != 0) {
1446 free (xpt_config_hook, M_TEMP);
1447 printf("xpt_init: config_intrhook_establish failed "
1448 "- failing attach\n");
1449 }
1450
1451 /* Install our software interrupt handlers */
1452 swi_add(NULL, "cambio", camisr, &cam_bioq, SWI_CAMBIO, 0, &cambio_ih);
1453}
1454
1455static cam_status
1456xptregister(struct cam_periph *periph, void *arg)
1457{
1458 if (periph == NULL) {
1459 printf("xptregister: periph was NULL!!\n");
1460 return(CAM_REQ_CMP_ERR);
1461 }
1462
1463 periph->softc = NULL;
1464
1465 xpt_periph = periph;
1466
1467 return(CAM_REQ_CMP);
1468}
1469
1470int32_t
1471xpt_add_periph(struct cam_periph *periph)
1472{
1473 struct cam_ed *device;
1474 int32_t status;
1475 struct periph_list *periph_head;
1476
1477 GIANT_REQUIRED;
1478
1479 device = periph->path->device;
1480
1481 periph_head = &device->periphs;
1482
1483 status = CAM_REQ_CMP;
1484
1485 if (device != NULL) {
1486 int s;
1487
1488 /*
1489 * Make room for this peripheral
1490 * so it will fit in the queue
1491 * when it's scheduled to run
1492 */
1493 s = splsoftcam();
1494 status = camq_resize(&device->drvq,
1495 device->drvq.array_size + 1);
1496
1497 device->generation++;
1498
1499 SLIST_INSERT_HEAD(periph_head, periph, periph_links);
1500
1501 splx(s);
1502 }
1503
1504 xsoftc.generation++;
1505
1506 return (status);
1507}
1508
1509void
1510xpt_remove_periph(struct cam_periph *periph)
1511{
1512 struct cam_ed *device;
1513
1514 GIANT_REQUIRED;
1515
1516 device = periph->path->device;
1517
1518 if (device != NULL) {
1519 int s;
1520 struct periph_list *periph_head;
1521
1522 periph_head = &device->periphs;
1523
1524 /* Release the slot for this peripheral */
1525 s = splsoftcam();
1526 camq_resize(&device->drvq, device->drvq.array_size - 1);
1527
1528 device->generation++;
1529
1530 SLIST_REMOVE(periph_head, periph, cam_periph, periph_links);
1531
1532 splx(s);
1533 }
1534
1535 xsoftc.generation++;
1536
1537}
1538
1539#ifdef CAM_NEW_TRAN_CODE
1540
1541void
1542xpt_announce_periph(struct cam_periph *periph, char *announce_string)
1543{
1544 struct ccb_pathinq cpi;
1545 struct ccb_trans_settings cts;
1546 struct cam_path *path;
1547 u_int speed;
1548 u_int freq;
1549 u_int mb;
1550 int s;
1551
1552 GIANT_REQUIRED;
1553
1554 path = periph->path;
1555 /*
1556 * To ensure that this is printed in one piece,
1557 * mask out CAM interrupts.
1558 */
1559 s = splsoftcam();
1560 printf("%s%d at %s%d bus %d target %d lun %d\n",
1561 periph->periph_name, periph->unit_number,
1562 path->bus->sim->sim_name,
1563 path->bus->sim->unit_number,
1564 path->bus->sim->bus_id,
1565 path->target->target_id,
1566 path->device->lun_id);
1567 printf("%s%d: ", periph->periph_name, periph->unit_number);
1568 scsi_print_inquiry(&path->device->inq_data);
1569 if (bootverbose && path->device->serial_num_len > 0) {
1570 /* Don't wrap the screen - print only the first 60 chars */
1571 printf("%s%d: Serial Number %.60s\n", periph->periph_name,
1572 periph->unit_number, path->device->serial_num);
1573 }
1574 xpt_setup_ccb(&cts.ccb_h, path, /*priority*/1);
1575 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
1576 cts.type = CTS_TYPE_CURRENT_SETTINGS;
1577 xpt_action((union ccb*)&cts);
1578
1579 /* Ask the SIM for its base transfer speed */
1580 xpt_setup_ccb(&cpi.ccb_h, path, /*priority*/1);
1581 cpi.ccb_h.func_code = XPT_PATH_INQ;
1582 xpt_action((union ccb *)&cpi);
1583
1584 speed = cpi.base_transfer_speed;
1585 freq = 0;
1586 if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_SPI) {
1587 struct ccb_trans_settings_spi *spi;
1588
1589 spi = &cts.xport_specific.spi;
1590 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) != 0
1591 && spi->sync_offset != 0) {
1592 freq = scsi_calc_syncsrate(spi->sync_period);
1593 speed = freq;
1594 }
1595
1596 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0)
1597 speed *= (0x01 << spi->bus_width);
1598 }
1599
1600 if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_FC) {
1601 struct ccb_trans_settings_fc *fc = &cts.xport_specific.fc;
1602 if (fc->valid & CTS_FC_VALID_SPEED) {
1603 speed = fc->bitrate;
1604 }
1605 }
1606
1607 mb = speed / 1000;
1608 if (mb > 0)
1609 printf("%s%d: %d.%03dMB/s transfers",
1610 periph->periph_name, periph->unit_number,
1611 mb, speed % 1000);
1612 else
1613 printf("%s%d: %dKB/s transfers", periph->periph_name,
1614 periph->unit_number, speed);
1615 /* Report additional information about SPI connections */
1616 if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_SPI) {
1617 struct ccb_trans_settings_spi *spi;
1618
1619 spi = &cts.xport_specific.spi;
1620 if (freq != 0) {
1621 printf(" (%d.%03dMHz%s, offset %d", freq / 1000,
1622 freq % 1000,
1623 (spi->ppr_options & MSG_EXT_PPR_DT_REQ) != 0
1624 ? " DT" : "",
1625 spi->sync_offset);
1626 }
1627 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0
1628 && spi->bus_width > 0) {
1629 if (freq != 0) {
1630 printf(", ");
1631 } else {
1632 printf(" (");
1633 }
1634 printf("%dbit)", 8 * (0x01 << spi->bus_width));
1635 } else if (freq != 0) {
1636 printf(")");
1637 }
1638 }
1639 if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_FC) {
1640 struct ccb_trans_settings_fc *fc;
1641
1642 fc = &cts.xport_specific.fc;
1643 if (fc->valid & CTS_FC_VALID_WWNN)
1644 printf(" WWNN 0x%llx", (long long) fc->wwnn);
1645 if (fc->valid & CTS_FC_VALID_WWPN)
1646 printf(" WWPN 0x%llx", (long long) fc->wwpn);
1647 if (fc->valid & CTS_FC_VALID_PORT)
1648 printf(" PortID 0x%x", fc->port);
1649 }
1650
1651 if (path->device->inq_flags & SID_CmdQue
1652 || path->device->flags & CAM_DEV_TAG_AFTER_COUNT) {
1653 printf("\n%s%d: Tagged Queueing Enabled",
1654 periph->periph_name, periph->unit_number);
1655 }
1656 printf("\n");
1657
1658 /*
1659 * We only want to print the caller's announce string if they've
1660 * passed one in..
1661 */
1662 if (announce_string != NULL)
1663 printf("%s%d: %s\n", periph->periph_name,
1664 periph->unit_number, announce_string);
1665 splx(s);
1666}
1667#else /* CAM_NEW_TRAN_CODE */
1668void
1669xpt_announce_periph(struct cam_periph *periph, char *announce_string)
1670{
1671 int s;
1672 u_int mb;
1673 struct cam_path *path;
1674 struct ccb_trans_settings cts;
1675
1676 GIANT_REQUIRED;
1677
1678 path = periph->path;
1679 /*
1680 * To ensure that this is printed in one piece,
1681 * mask out CAM interrupts.
1682 */
1683 s = splsoftcam();
1684 printf("%s%d at %s%d bus %d target %d lun %d\n",
1685 periph->periph_name, periph->unit_number,
1686 path->bus->sim->sim_name,
1687 path->bus->sim->unit_number,
1688 path->bus->sim->bus_id,
1689 path->target->target_id,
1690 path->device->lun_id);
1691 printf("%s%d: ", periph->periph_name, periph->unit_number);
1692 scsi_print_inquiry(&path->device->inq_data);
1693 if ((bootverbose)
1694 && (path->device->serial_num_len > 0)) {
1695 /* Don't wrap the screen - print only the first 60 chars */
1696 printf("%s%d: Serial Number %.60s\n", periph->periph_name,
1697 periph->unit_number, path->device->serial_num);
1698 }
1699 xpt_setup_ccb(&cts.ccb_h, path, /*priority*/1);
1700 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
1701 cts.flags = CCB_TRANS_CURRENT_SETTINGS;
1702 xpt_action((union ccb*)&cts);
1703 if (cts.ccb_h.status == CAM_REQ_CMP) {
1704 u_int speed;
1705 u_int freq;
1706
1707 if ((cts.valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0
1708 && cts.sync_offset != 0) {
1709 freq = scsi_calc_syncsrate(cts.sync_period);
1710 speed = freq;
1711 } else {
1712 struct ccb_pathinq cpi;
1713
1714 /* Ask the SIM for its base transfer speed */
1715 xpt_setup_ccb(&cpi.ccb_h, path, /*priority*/1);
1716 cpi.ccb_h.func_code = XPT_PATH_INQ;
1717 xpt_action((union ccb *)&cpi);
1718
1719 speed = cpi.base_transfer_speed;
1720 freq = 0;
1721 }
1722 if ((cts.valid & CCB_TRANS_BUS_WIDTH_VALID) != 0)
1723 speed *= (0x01 << cts.bus_width);
1724 mb = speed / 1000;
1725 if (mb > 0)
1726 printf("%s%d: %d.%03dMB/s transfers",
1727 periph->periph_name, periph->unit_number,
1728 mb, speed % 1000);
1729 else
1730 printf("%s%d: %dKB/s transfers", periph->periph_name,
1731 periph->unit_number, speed);
1732 if ((cts.valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0
1733 && cts.sync_offset != 0) {
1734 printf(" (%d.%03dMHz, offset %d", freq / 1000,
1735 freq % 1000, cts.sync_offset);
1736 }
1737 if ((cts.valid & CCB_TRANS_BUS_WIDTH_VALID) != 0
1738 && cts.bus_width > 0) {
1739 if ((cts.valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0
1740 && cts.sync_offset != 0) {
1741 printf(", ");
1742 } else {
1743 printf(" (");
1744 }
1745 printf("%dbit)", 8 * (0x01 << cts.bus_width));
1746 } else if ((cts.valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0
1747 && cts.sync_offset != 0) {
1748 printf(")");
1749 }
1750
1751 if (path->device->inq_flags & SID_CmdQue
1752 || path->device->flags & CAM_DEV_TAG_AFTER_COUNT) {
1753 printf(", Tagged Queueing Enabled");
1754 }
1755
1756 printf("\n");
1757 } else if (path->device->inq_flags & SID_CmdQue
1758 || path->device->flags & CAM_DEV_TAG_AFTER_COUNT) {
1759 printf("%s%d: Tagged Queueing Enabled\n",
1760 periph->periph_name, periph->unit_number);
1761 }
1762
1763 /*
1764 * We only want to print the caller's announce string if they've
1765 * passed one in..
1766 */
1767 if (announce_string != NULL)
1768 printf("%s%d: %s\n", periph->periph_name,
1769 periph->unit_number, announce_string);
1770 splx(s);
1771}
1772
1773#endif /* CAM_NEW_TRAN_CODE */
1774
1775static dev_match_ret
1776xptbusmatch(struct dev_match_pattern *patterns, u_int num_patterns,
1777 struct cam_eb *bus)
1778{
1779 dev_match_ret retval;
1780 int i;
1781
1782 retval = DM_RET_NONE;
1783
1784 /*
1785 * If we aren't given something to match against, that's an error.
1786 */
1787 if (bus == NULL)
1788 return(DM_RET_ERROR);
1789
1790 /*
1791 * If there are no match entries, then this bus matches no
1792 * matter what.
1793 */
1794 if ((patterns == NULL) || (num_patterns == 0))
1795 return(DM_RET_DESCEND | DM_RET_COPY);
1796
1797 for (i = 0; i < num_patterns; i++) {
1798 struct bus_match_pattern *cur_pattern;
1799
1800 /*
1801 * If the pattern in question isn't for a bus node, we
1802 * aren't interested. However, we do indicate to the
1803 * calling routine that we should continue descending the
1804 * tree, since the user wants to match against lower-level
1805 * EDT elements.
1806 */
1807 if (patterns[i].type != DEV_MATCH_BUS) {
1808 if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)
1809 retval |= DM_RET_DESCEND;
1810 continue;
1811 }
1812
1813 cur_pattern = &patterns[i].pattern.bus_pattern;
1814
1815 /*
1816 * If they want to match any bus node, we give them any
1817 * device node.
1818 */
1819 if (cur_pattern->flags == BUS_MATCH_ANY) {
1820 /* set the copy flag */
1821 retval |= DM_RET_COPY;
1822
1823 /*
1824 * If we've already decided on an action, go ahead
1825 * and return.
1826 */
1827 if ((retval & DM_RET_ACTION_MASK) != DM_RET_NONE)
1828 return(retval);
1829 }
1830
1831 /*
1832 * Not sure why someone would do this...
1833 */
1834 if (cur_pattern->flags == BUS_MATCH_NONE)
1835 continue;
1836
1837 if (((cur_pattern->flags & BUS_MATCH_PATH) != 0)
1838 && (cur_pattern->path_id != bus->path_id))
1839 continue;
1840
1841 if (((cur_pattern->flags & BUS_MATCH_BUS_ID) != 0)
1842 && (cur_pattern->bus_id != bus->sim->bus_id))
1843 continue;
1844
1845 if (((cur_pattern->flags & BUS_MATCH_UNIT) != 0)
1846 && (cur_pattern->unit_number != bus->sim->unit_number))
1847 continue;
1848
1849 if (((cur_pattern->flags & BUS_MATCH_NAME) != 0)
1850 && (strncmp(cur_pattern->dev_name, bus->sim->sim_name,
1851 DEV_IDLEN) != 0))
1852 continue;
1853
1854 /*
1855 * If we get to this point, the user definitely wants
1856 * information on this bus. So tell the caller to copy the
1857 * data out.
1858 */
1859 retval |= DM_RET_COPY;
1860
1861 /*
1862 * If the return action has been set to descend, then we
1863 * know that we've already seen a non-bus matching
1864 * expression, therefore we need to further descend the tree.
1865 * This won't change by continuing around the loop, so we
1866 * go ahead and return. If we haven't seen a non-bus
1867 * matching expression, we keep going around the loop until
1868 * we exhaust the matching expressions. We'll set the stop
1869 * flag once we fall out of the loop.
1870 */
1871 if ((retval & DM_RET_ACTION_MASK) == DM_RET_DESCEND)
1872 return(retval);
1873 }
1874
1875 /*
1876 * If the return action hasn't been set to descend yet, that means
1877 * we haven't seen anything other than bus matching patterns. So
1878 * tell the caller to stop descending the tree -- the user doesn't
1879 * want to match against lower level tree elements.
1880 */
1881 if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)
1882 retval |= DM_RET_STOP;
1883
1884 return(retval);
1885}
1886
1887static dev_match_ret
1888xptdevicematch(struct dev_match_pattern *patterns, u_int num_patterns,
1889 struct cam_ed *device)
1890{
1891 dev_match_ret retval;
1892 int i;
1893
1894 retval = DM_RET_NONE;
1895
1896 /*
1897 * If we aren't given something to match against, that's an error.
1898 */
1899 if (device == NULL)
1900 return(DM_RET_ERROR);
1901
1902 /*
1903 * If there are no match entries, then this device matches no
1904 * matter what.
1905 */
1906 if ((patterns == NULL) || (num_patterns == 0))
1907 return(DM_RET_DESCEND | DM_RET_COPY);
1908
1909 for (i = 0; i < num_patterns; i++) {
1910 struct device_match_pattern *cur_pattern;
1911
1912 /*
1913 * If the pattern in question isn't for a device node, we
1914 * aren't interested.
1915 */
1916 if (patterns[i].type != DEV_MATCH_DEVICE) {
1917 if ((patterns[i].type == DEV_MATCH_PERIPH)
1918 && ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE))
1919 retval |= DM_RET_DESCEND;
1920 continue;
1921 }
1922
1923 cur_pattern = &patterns[i].pattern.device_pattern;
1924
1925 /*
1926 * If they want to match any device node, we give them any
1927 * device node.
1928 */
1929 if (cur_pattern->flags == DEV_MATCH_ANY) {
1930 /* set the copy flag */
1931 retval |= DM_RET_COPY;
1932
1933
1934 /*
1935 * If we've already decided on an action, go ahead
1936 * and return.
1937 */
1938 if ((retval & DM_RET_ACTION_MASK) != DM_RET_NONE)
1939 return(retval);
1940 }
1941
1942 /*
1943 * Not sure why someone would do this...
1944 */
1945 if (cur_pattern->flags == DEV_MATCH_NONE)
1946 continue;
1947
1948 if (((cur_pattern->flags & DEV_MATCH_PATH) != 0)
1949 && (cur_pattern->path_id != device->target->bus->path_id))
1950 continue;
1951
1952 if (((cur_pattern->flags & DEV_MATCH_TARGET) != 0)
1953 && (cur_pattern->target_id != device->target->target_id))
1954 continue;
1955
1956 if (((cur_pattern->flags & DEV_MATCH_LUN) != 0)
1957 && (cur_pattern->target_lun != device->lun_id))
1958 continue;
1959
1960 if (((cur_pattern->flags & DEV_MATCH_INQUIRY) != 0)
1961 && (cam_quirkmatch((caddr_t)&device->inq_data,
1962 (caddr_t)&cur_pattern->inq_pat,
1963 1, sizeof(cur_pattern->inq_pat),
1964 scsi_static_inquiry_match) == NULL))
1965 continue;
1966
1967 /*
1968 * If we get to this point, the user definitely wants
1969 * information on this device. So tell the caller to copy
1970 * the data out.
1971 */
1972 retval |= DM_RET_COPY;
1973
1974 /*
1975 * If the return action has been set to descend, then we
1976 * know that we've already seen a peripheral matching
1977 * expression, therefore we need to further descend the tree.
1978 * This won't change by continuing around the loop, so we
1979 * go ahead and return. If we haven't seen a peripheral
1980 * matching expression, we keep going around the loop until
1981 * we exhaust the matching expressions. We'll set the stop
1982 * flag once we fall out of the loop.
1983 */
1984 if ((retval & DM_RET_ACTION_MASK) == DM_RET_DESCEND)
1985 return(retval);
1986 }
1987
1988 /*
1989 * If the return action hasn't been set to descend yet, that means
1990 * we haven't seen any peripheral matching patterns. So tell the
1991 * caller to stop descending the tree -- the user doesn't want to
1992 * match against lower level tree elements.
1993 */
1994 if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)
1995 retval |= DM_RET_STOP;
1996
1997 return(retval);
1998}
1999
2000/*
2001 * Match a single peripheral against any number of match patterns.
2002 */
2003static dev_match_ret
2004xptperiphmatch(struct dev_match_pattern *patterns, u_int num_patterns,
2005 struct cam_periph *periph)
2006{
2007 dev_match_ret retval;
2008 int i;
2009
2010 /*
2011 * If we aren't given something to match against, that's an error.
2012 */
2013 if (periph == NULL)
2014 return(DM_RET_ERROR);
2015
2016 /*
2017 * If there are no match entries, then this peripheral matches no
2018 * matter what.
2019 */
2020 if ((patterns == NULL) || (num_patterns == 0))
2021 return(DM_RET_STOP | DM_RET_COPY);
2022
2023 /*
2024 * There aren't any nodes below a peripheral node, so there's no
2025 * reason to descend the tree any further.
2026 */
2027 retval = DM_RET_STOP;
2028
2029 for (i = 0; i < num_patterns; i++) {
2030 struct periph_match_pattern *cur_pattern;
2031
2032 /*
2033 * If the pattern in question isn't for a peripheral, we
2034 * aren't interested.
2035 */
2036 if (patterns[i].type != DEV_MATCH_PERIPH)
2037 continue;
2038
2039 cur_pattern = &patterns[i].pattern.periph_pattern;
2040
2041 /*
2042 * If they want to match on anything, then we will do so.
2043 */
2044 if (cur_pattern->flags == PERIPH_MATCH_ANY) {
2045 /* set the copy flag */
2046 retval |= DM_RET_COPY;
2047
2048 /*
2049 * We've already set the return action to stop,
2050 * since there are no nodes below peripherals in
2051 * the tree.
2052 */
2053 return(retval);
2054 }
2055
2056 /*
2057 * Not sure why someone would do this...
2058 */
2059 if (cur_pattern->flags == PERIPH_MATCH_NONE)
2060 continue;
2061
2062 if (((cur_pattern->flags & PERIPH_MATCH_PATH) != 0)
2063 && (cur_pattern->path_id != periph->path->bus->path_id))
2064 continue;
2065
2066 /*
2067 * For the target and lun id's, we have to make sure the
2068 * target and lun pointers aren't NULL. The xpt peripheral
2069 * has a wildcard target and device.
2070 */
2071 if (((cur_pattern->flags & PERIPH_MATCH_TARGET) != 0)
2072 && ((periph->path->target == NULL)
2073 ||(cur_pattern->target_id != periph->path->target->target_id)))
2074 continue;
2075
2076 if (((cur_pattern->flags & PERIPH_MATCH_LUN) != 0)
2077 && ((periph->path->device == NULL)
2078 || (cur_pattern->target_lun != periph->path->device->lun_id)))
2079 continue;
2080
2081 if (((cur_pattern->flags & PERIPH_MATCH_UNIT) != 0)
2082 && (cur_pattern->unit_number != periph->unit_number))
2083 continue;
2084
2085 if (((cur_pattern->flags & PERIPH_MATCH_NAME) != 0)
2086 && (strncmp(cur_pattern->periph_name, periph->periph_name,
2087 DEV_IDLEN) != 0))
2088 continue;
2089
2090 /*
2091 * If we get to this point, the user definitely wants
2092 * information on this peripheral. So tell the caller to
2093 * copy the data out.
2094 */
2095 retval |= DM_RET_COPY;
2096
2097 /*
2098 * The return action has already been set to stop, since
2099 * peripherals don't have any nodes below them in the EDT.
2100 */
2101 return(retval);
2102 }
2103
2104 /*
2105 * If we get to this point, the peripheral that was passed in
2106 * doesn't match any of the patterns.
2107 */
2108 return(retval);
2109}
2110
2111static int
2112xptedtbusfunc(struct cam_eb *bus, void *arg)
2113{
2114 struct ccb_dev_match *cdm;
2115 dev_match_ret retval;
2116
2117 cdm = (struct ccb_dev_match *)arg;
2118
2119 /*
2120 * If our position is for something deeper in the tree, that means
2121 * that we've already seen this node. So, we keep going down.
2122 */
2123 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2124 && (cdm->pos.cookie.bus == bus)
2125 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2126 && (cdm->pos.cookie.target != NULL))
2127 retval = DM_RET_DESCEND;
2128 else
2129 retval = xptbusmatch(cdm->patterns, cdm->num_patterns, bus);
2130
2131 /*
2132 * If we got an error, bail out of the search.
2133 */
2134 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
2135 cdm->status = CAM_DEV_MATCH_ERROR;
2136 return(0);
2137 }
2138
2139 /*
2140 * If the copy flag is set, copy this bus out.
2141 */
2142 if (retval & DM_RET_COPY) {
2143 int spaceleft, j;
2144
2145 spaceleft = cdm->match_buf_len - (cdm->num_matches *
2146 sizeof(struct dev_match_result));
2147
2148 /*
2149 * If we don't have enough space to put in another
2150 * match result, save our position and tell the
2151 * user there are more devices to check.
2152 */
2153 if (spaceleft < sizeof(struct dev_match_result)) {
2154 bzero(&cdm->pos, sizeof(cdm->pos));
2155 cdm->pos.position_type =
2156 CAM_DEV_POS_EDT | CAM_DEV_POS_BUS;
2157
2158 cdm->pos.cookie.bus = bus;
2159 cdm->pos.generations[CAM_BUS_GENERATION]=
2160 bus_generation;
2161 cdm->status = CAM_DEV_MATCH_MORE;
2162 return(0);
2163 }
2164 j = cdm->num_matches;
2165 cdm->num_matches++;
2166 cdm->matches[j].type = DEV_MATCH_BUS;
2167 cdm->matches[j].result.bus_result.path_id = bus->path_id;
2168 cdm->matches[j].result.bus_result.bus_id = bus->sim->bus_id;
2169 cdm->matches[j].result.bus_result.unit_number =
2170 bus->sim->unit_number;
2171 strncpy(cdm->matches[j].result.bus_result.dev_name,
2172 bus->sim->sim_name, DEV_IDLEN);
2173 }
2174
2175 /*
2176 * If the user is only interested in busses, there's no
2177 * reason to descend to the next level in the tree.
2178 */
2179 if ((retval & DM_RET_ACTION_MASK) == DM_RET_STOP)
2180 return(1);
2181
2182 /*
2183 * If there is a target generation recorded, check it to
2184 * make sure the target list hasn't changed.
2185 */
2186 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2187 && (bus == cdm->pos.cookie.bus)
2188 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2189 && (cdm->pos.generations[CAM_TARGET_GENERATION] != 0)
2190 && (cdm->pos.generations[CAM_TARGET_GENERATION] !=
2191 bus->generation)) {
2192 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2193 return(0);
2194 }
2195
2196 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2197 && (cdm->pos.cookie.bus == bus)
2198 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2199 && (cdm->pos.cookie.target != NULL))
2200 return(xpttargettraverse(bus,
2201 (struct cam_et *)cdm->pos.cookie.target,
2202 xptedttargetfunc, arg));
2203 else
2204 return(xpttargettraverse(bus, NULL, xptedttargetfunc, arg));
2205}
2206
2207static int
2208xptedttargetfunc(struct cam_et *target, void *arg)
2209{
2210 struct ccb_dev_match *cdm;
2211
2212 cdm = (struct ccb_dev_match *)arg;
2213
2214 /*
2215 * If there is a device list generation recorded, check it to
2216 * make sure the device list hasn't changed.
2217 */
2218 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2219 && (cdm->pos.cookie.bus == target->bus)
2220 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2221 && (cdm->pos.cookie.target == target)
2222 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2223 && (cdm->pos.generations[CAM_DEV_GENERATION] != 0)
2224 && (cdm->pos.generations[CAM_DEV_GENERATION] !=
2225 target->generation)) {
2226 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2227 return(0);
2228 }
2229
2230 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2231 && (cdm->pos.cookie.bus == target->bus)
2232 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2233 && (cdm->pos.cookie.target == target)
2234 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2235 && (cdm->pos.cookie.device != NULL))
2236 return(xptdevicetraverse(target,
2237 (struct cam_ed *)cdm->pos.cookie.device,
2238 xptedtdevicefunc, arg));
2239 else
2240 return(xptdevicetraverse(target, NULL, xptedtdevicefunc, arg));
2241}
2242
2243static int
2244xptedtdevicefunc(struct cam_ed *device, void *arg)
2245{
2246
2247 struct ccb_dev_match *cdm;
2248 dev_match_ret retval;
2249
2250 cdm = (struct ccb_dev_match *)arg;
2251
2252 /*
2253 * If our position is for something deeper in the tree, that means
2254 * that we've already seen this node. So, we keep going down.
2255 */
2256 if ((cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2257 && (cdm->pos.cookie.device == device)
2258 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2259 && (cdm->pos.cookie.periph != NULL))
2260 retval = DM_RET_DESCEND;
2261 else
2262 retval = xptdevicematch(cdm->patterns, cdm->num_patterns,
2263 device);
2264
2265 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
2266 cdm->status = CAM_DEV_MATCH_ERROR;
2267 return(0);
2268 }
2269
2270 /*
2271 * If the copy flag is set, copy this device out.
2272 */
2273 if (retval & DM_RET_COPY) {
2274 int spaceleft, j;
2275
2276 spaceleft = cdm->match_buf_len - (cdm->num_matches *
2277 sizeof(struct dev_match_result));
2278
2279 /*
2280 * If we don't have enough space to put in another
2281 * match result, save our position and tell the
2282 * user there are more devices to check.
2283 */
2284 if (spaceleft < sizeof(struct dev_match_result)) {
2285 bzero(&cdm->pos, sizeof(cdm->pos));
2286 cdm->pos.position_type =
2287 CAM_DEV_POS_EDT | CAM_DEV_POS_BUS |
2288 CAM_DEV_POS_TARGET | CAM_DEV_POS_DEVICE;
2289
2290 cdm->pos.cookie.bus = device->target->bus;
2291 cdm->pos.generations[CAM_BUS_GENERATION]=
2292 bus_generation;
2293 cdm->pos.cookie.target = device->target;
2294 cdm->pos.generations[CAM_TARGET_GENERATION] =
2295 device->target->bus->generation;
2296 cdm->pos.cookie.device = device;
2297 cdm->pos.generations[CAM_DEV_GENERATION] =
2298 device->target->generation;
2299 cdm->status = CAM_DEV_MATCH_MORE;
2300 return(0);
2301 }
2302 j = cdm->num_matches;
2303 cdm->num_matches++;
2304 cdm->matches[j].type = DEV_MATCH_DEVICE;
2305 cdm->matches[j].result.device_result.path_id =
2306 device->target->bus->path_id;
2307 cdm->matches[j].result.device_result.target_id =
2308 device->target->target_id;
2309 cdm->matches[j].result.device_result.target_lun =
2310 device->lun_id;
2311 bcopy(&device->inq_data,
2312 &cdm->matches[j].result.device_result.inq_data,
2313 sizeof(struct scsi_inquiry_data));
2314
2315 /* Let the user know whether this device is unconfigured */
2316 if (device->flags & CAM_DEV_UNCONFIGURED)
2317 cdm->matches[j].result.device_result.flags =
2318 DEV_RESULT_UNCONFIGURED;
2319 else
2320 cdm->matches[j].result.device_result.flags =
2321 DEV_RESULT_NOFLAG;
2322 }
2323
2324 /*
2325 * If the user isn't interested in peripherals, don't descend
2326 * the tree any further.
2327 */
2328 if ((retval & DM_RET_ACTION_MASK) == DM_RET_STOP)
2329 return(1);
2330
2331 /*
2332 * If there is a peripheral list generation recorded, make sure
2333 * it hasn't changed.
2334 */
2335 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2336 && (device->target->bus == cdm->pos.cookie.bus)
2337 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2338 && (device->target == cdm->pos.cookie.target)
2339 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2340 && (device == cdm->pos.cookie.device)
2341 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2342 && (cdm->pos.generations[CAM_PERIPH_GENERATION] != 0)
2343 && (cdm->pos.generations[CAM_PERIPH_GENERATION] !=
2344 device->generation)){
2345 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2346 return(0);
2347 }
2348
2349 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2350 && (cdm->pos.cookie.bus == device->target->bus)
2351 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2352 && (cdm->pos.cookie.target == device->target)
2353 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2354 && (cdm->pos.cookie.device == device)
2355 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2356 && (cdm->pos.cookie.periph != NULL))
2357 return(xptperiphtraverse(device,
2358 (struct cam_periph *)cdm->pos.cookie.periph,
2359 xptedtperiphfunc, arg));
2360 else
2361 return(xptperiphtraverse(device, NULL, xptedtperiphfunc, arg));
2362}
2363
2364static int
2365xptedtperiphfunc(struct cam_periph *periph, void *arg)
2366{
2367 struct ccb_dev_match *cdm;
2368 dev_match_ret retval;
2369
2370 cdm = (struct ccb_dev_match *)arg;
2371
2372 retval = xptperiphmatch(cdm->patterns, cdm->num_patterns, periph);
2373
2374 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
2375 cdm->status = CAM_DEV_MATCH_ERROR;
2376 return(0);
2377 }
2378
2379 /*
2380 * If the copy flag is set, copy this peripheral out.
2381 */
2382 if (retval & DM_RET_COPY) {
2383 int spaceleft, j;
2384
2385 spaceleft = cdm->match_buf_len - (cdm->num_matches *
2386 sizeof(struct dev_match_result));
2387
2388 /*
2389 * If we don't have enough space to put in another
2390 * match result, save our position and tell the
2391 * user there are more devices to check.
2392 */
2393 if (spaceleft < sizeof(struct dev_match_result)) {
2394 bzero(&cdm->pos, sizeof(cdm->pos));
2395 cdm->pos.position_type =
2396 CAM_DEV_POS_EDT | CAM_DEV_POS_BUS |
2397 CAM_DEV_POS_TARGET | CAM_DEV_POS_DEVICE |
2398 CAM_DEV_POS_PERIPH;
2399
2400 cdm->pos.cookie.bus = periph->path->bus;
2401 cdm->pos.generations[CAM_BUS_GENERATION]=
2402 bus_generation;
2403 cdm->pos.cookie.target = periph->path->target;
2404 cdm->pos.generations[CAM_TARGET_GENERATION] =
2405 periph->path->bus->generation;
2406 cdm->pos.cookie.device = periph->path->device;
2407 cdm->pos.generations[CAM_DEV_GENERATION] =
2408 periph->path->target->generation;
2409 cdm->pos.cookie.periph = periph;
2410 cdm->pos.generations[CAM_PERIPH_GENERATION] =
2411 periph->path->device->generation;
2412 cdm->status = CAM_DEV_MATCH_MORE;
2413 return(0);
2414 }
2415
2416 j = cdm->num_matches;
2417 cdm->num_matches++;
2418 cdm->matches[j].type = DEV_MATCH_PERIPH;
2419 cdm->matches[j].result.periph_result.path_id =
2420 periph->path->bus->path_id;
2421 cdm->matches[j].result.periph_result.target_id =
2422 periph->path->target->target_id;
2423 cdm->matches[j].result.periph_result.target_lun =
2424 periph->path->device->lun_id;
2425 cdm->matches[j].result.periph_result.unit_number =
2426 periph->unit_number;
2427 strncpy(cdm->matches[j].result.periph_result.periph_name,
2428 periph->periph_name, DEV_IDLEN);
2429 }
2430
2431 return(1);
2432}
2433
2434static int
2435xptedtmatch(struct ccb_dev_match *cdm)
2436{
2437 int ret;
2438
2439 cdm->num_matches = 0;
2440
2441 /*
2442 * Check the bus list generation. If it has changed, the user
2443 * needs to reset everything and start over.
2444 */
2445 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2446 && (cdm->pos.generations[CAM_BUS_GENERATION] != 0)
2447 && (cdm->pos.generations[CAM_BUS_GENERATION] != bus_generation)) {
2448 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2449 return(0);
2450 }
2451
2452 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2453 && (cdm->pos.cookie.bus != NULL))
2454 ret = xptbustraverse((struct cam_eb *)cdm->pos.cookie.bus,
2455 xptedtbusfunc, cdm);
2456 else
2457 ret = xptbustraverse(NULL, xptedtbusfunc, cdm);
2458
2459 /*
2460 * If we get back 0, that means that we had to stop before fully
2461 * traversing the EDT. It also means that one of the subroutines
2462 * has set the status field to the proper value. If we get back 1,
2463 * we've fully traversed the EDT and copied out any matching entries.
2464 */
2465 if (ret == 1)
2466 cdm->status = CAM_DEV_MATCH_LAST;
2467
2468 return(ret);
2469}
2470
2471static int
2472xptplistpdrvfunc(struct periph_driver **pdrv, void *arg)
2473{
2474 struct ccb_dev_match *cdm;
2475
2476 cdm = (struct ccb_dev_match *)arg;
2477
2478 if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR)
2479 && (cdm->pos.cookie.pdrv == pdrv)
2480 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2481 && (cdm->pos.generations[CAM_PERIPH_GENERATION] != 0)
2482 && (cdm->pos.generations[CAM_PERIPH_GENERATION] !=
2483 (*pdrv)->generation)) {
2484 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2485 return(0);
2486 }
2487
2488 if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR)
2489 && (cdm->pos.cookie.pdrv == pdrv)
2490 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2491 && (cdm->pos.cookie.periph != NULL))
2492 return(xptpdperiphtraverse(pdrv,
2493 (struct cam_periph *)cdm->pos.cookie.periph,
2494 xptplistperiphfunc, arg));
2495 else
2496 return(xptpdperiphtraverse(pdrv, NULL,xptplistperiphfunc, arg));
2497}
2498
2499static int
2500xptplistperiphfunc(struct cam_periph *periph, void *arg)
2501{
2502 struct ccb_dev_match *cdm;
2503 dev_match_ret retval;
2504
2505 cdm = (struct ccb_dev_match *)arg;
2506
2507 retval = xptperiphmatch(cdm->patterns, cdm->num_patterns, periph);
2508
2509 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
2510 cdm->status = CAM_DEV_MATCH_ERROR;
2511 return(0);
2512 }
2513
2514 /*
2515 * If the copy flag is set, copy this peripheral out.
2516 */
2517 if (retval & DM_RET_COPY) {
2518 int spaceleft, j;
2519
2520 spaceleft = cdm->match_buf_len - (cdm->num_matches *
2521 sizeof(struct dev_match_result));
2522
2523 /*
2524 * If we don't have enough space to put in another
2525 * match result, save our position and tell the
2526 * user there are more devices to check.
2527 */
2528 if (spaceleft < sizeof(struct dev_match_result)) {
2529 struct periph_driver **pdrv;
2530
2531 pdrv = NULL;
2532 bzero(&cdm->pos, sizeof(cdm->pos));
2533 cdm->pos.position_type =
2534 CAM_DEV_POS_PDRV | CAM_DEV_POS_PDPTR |
2535 CAM_DEV_POS_PERIPH;
2536
2537 /*
2538 * This may look a bit non-sensical, but it is
2539 * actually quite logical. There are very few
2540 * peripheral drivers, and bloating every peripheral
2541 * structure with a pointer back to its parent
2542 * peripheral driver linker set entry would cost
2543 * more in the long run than doing this quick lookup.
2544 */
2545 for (pdrv = periph_drivers; *pdrv != NULL; pdrv++) {
2546 if (strcmp((*pdrv)->driver_name,
2547 periph->periph_name) == 0)
2548 break;
2549 }
2550
2551 if (*pdrv == NULL) {
2552 cdm->status = CAM_DEV_MATCH_ERROR;
2553 return(0);
2554 }
2555
2556 cdm->pos.cookie.pdrv = pdrv;
2557 /*
2558 * The periph generation slot does double duty, as
2559 * does the periph pointer slot. They are used for
2560 * both edt and pdrv lookups and positioning.
2561 */
2562 cdm->pos.cookie.periph = periph;
2563 cdm->pos.generations[CAM_PERIPH_GENERATION] =
2564 (*pdrv)->generation;
2565 cdm->status = CAM_DEV_MATCH_MORE;
2566 return(0);
2567 }
2568
2569 j = cdm->num_matches;
2570 cdm->num_matches++;
2571 cdm->matches[j].type = DEV_MATCH_PERIPH;
2572 cdm->matches[j].result.periph_result.path_id =
2573 periph->path->bus->path_id;
2574
2575 /*
2576 * The transport layer peripheral doesn't have a target or
2577 * lun.
2578 */
2579 if (periph->path->target)
2580 cdm->matches[j].result.periph_result.target_id =
2581 periph->path->target->target_id;
2582 else
2583 cdm->matches[j].result.periph_result.target_id = -1;
2584
2585 if (periph->path->device)
2586 cdm->matches[j].result.periph_result.target_lun =
2587 periph->path->device->lun_id;
2588 else
2589 cdm->matches[j].result.periph_result.target_lun = -1;
2590
2591 cdm->matches[j].result.periph_result.unit_number =
2592 periph->unit_number;
2593 strncpy(cdm->matches[j].result.periph_result.periph_name,
2594 periph->periph_name, DEV_IDLEN);
2595 }
2596
2597 return(1);
2598}
2599
2600static int
2601xptperiphlistmatch(struct ccb_dev_match *cdm)
2602{
2603 int ret;
2604
2605 cdm->num_matches = 0;
2606
2607 /*
2608 * At this point in the edt traversal function, we check the bus
2609 * list generation to make sure that no busses have been added or
2610 * removed since the user last sent a XPT_DEV_MATCH ccb through.
2611 * For the peripheral driver list traversal function, however, we
2612 * don't have to worry about new peripheral driver types coming or
2613 * going; they're in a linker set, and therefore can't change
2614 * without a recompile.
2615 */
2616
2617 if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR)
2618 && (cdm->pos.cookie.pdrv != NULL))
2619 ret = xptpdrvtraverse(
2620 (struct periph_driver **)cdm->pos.cookie.pdrv,
2621 xptplistpdrvfunc, cdm);
2622 else
2623 ret = xptpdrvtraverse(NULL, xptplistpdrvfunc, cdm);
2624
2625 /*
2626 * If we get back 0, that means that we had to stop before fully
2627 * traversing the peripheral driver tree. It also means that one of
2628 * the subroutines has set the status field to the proper value. If
2629 * we get back 1, we've fully traversed the EDT and copied out any
2630 * matching entries.
2631 */
2632 if (ret == 1)
2633 cdm->status = CAM_DEV_MATCH_LAST;
2634
2635 return(ret);
2636}
2637
2638static int
2639xptbustraverse(struct cam_eb *start_bus, xpt_busfunc_t *tr_func, void *arg)
2640{
2641 struct cam_eb *bus, *next_bus;
2642 int retval;
2643
2644 retval = 1;
2645
2646 for (bus = (start_bus ? start_bus : TAILQ_FIRST(&xpt_busses));
2647 bus != NULL;
2648 bus = next_bus) {
2649 next_bus = TAILQ_NEXT(bus, links);
2650
2651 retval = tr_func(bus, arg);
2652 if (retval == 0)
2653 return(retval);
2654 }
2655
2656 return(retval);
2657}
2658
2659static int
2660xpttargettraverse(struct cam_eb *bus, struct cam_et *start_target,
2661 xpt_targetfunc_t *tr_func, void *arg)
2662{
2663 struct cam_et *target, *next_target;
2664 int retval;
2665
2666 retval = 1;
2667 for (target = (start_target ? start_target :
2668 TAILQ_FIRST(&bus->et_entries));
2669 target != NULL; target = next_target) {
2670
2671 next_target = TAILQ_NEXT(target, links);
2672
2673 retval = tr_func(target, arg);
2674
2675 if (retval == 0)
2676 return(retval);
2677 }
2678
2679 return(retval);
2680}
2681
2682static int
2683xptdevicetraverse(struct cam_et *target, struct cam_ed *start_device,
2684 xpt_devicefunc_t *tr_func, void *arg)
2685{
2686 struct cam_ed *device, *next_device;
2687 int retval;
2688
2689 retval = 1;
2690 for (device = (start_device ? start_device :
2691 TAILQ_FIRST(&target->ed_entries));
2692 device != NULL;
2693 device = next_device) {
2694
2695 next_device = TAILQ_NEXT(device, links);
2696
2697 retval = tr_func(device, arg);
2698
2699 if (retval == 0)
2700 return(retval);
2701 }
2702
2703 return(retval);
2704}
2705
2706static int
2707xptperiphtraverse(struct cam_ed *device, struct cam_periph *start_periph,
2708 xpt_periphfunc_t *tr_func, void *arg)
2709{
2710 struct cam_periph *periph, *next_periph;
2711 int retval;
2712
2713 retval = 1;
2714
2715 for (periph = (start_periph ? start_periph :
2716 SLIST_FIRST(&device->periphs));
2717 periph != NULL;
2718 periph = next_periph) {
2719
2720 next_periph = SLIST_NEXT(periph, periph_links);
2721
2722 retval = tr_func(periph, arg);
2723 if (retval == 0)
2724 return(retval);
2725 }
2726
2727 return(retval);
2728}
2729
2730static int
2731xptpdrvtraverse(struct periph_driver **start_pdrv,
2732 xpt_pdrvfunc_t *tr_func, void *arg)
2733{
2734 struct periph_driver **pdrv;
2735 int retval;
2736
2737 retval = 1;
2738
2739 /*
2740 * We don't traverse the peripheral driver list like we do the
2741 * other lists, because it is a linker set, and therefore cannot be
2742 * changed during runtime. If the peripheral driver list is ever
2743 * re-done to be something other than a linker set (i.e. it can
2744 * change while the system is running), the list traversal should
2745 * be modified to work like the other traversal functions.
2746 */
2747 for (pdrv = (start_pdrv ? start_pdrv : periph_drivers);
2748 *pdrv != NULL; pdrv++) {
2749 retval = tr_func(pdrv, arg);
2750
2751 if (retval == 0)
2752 return(retval);
2753 }
2754
2755 return(retval);
2756}
2757
2758static int
2759xptpdperiphtraverse(struct periph_driver **pdrv,
2760 struct cam_periph *start_periph,
2761 xpt_periphfunc_t *tr_func, void *arg)
2762{
2763 struct cam_periph *periph, *next_periph;
2764 int retval;
2765
2766 retval = 1;
2767
2768 for (periph = (start_periph ? start_periph :
2769 TAILQ_FIRST(&(*pdrv)->units)); periph != NULL;
2770 periph = next_periph) {
2771
2772 next_periph = TAILQ_NEXT(periph, unit_links);
2773
2774 retval = tr_func(periph, arg);
2775 if (retval == 0)
2776 return(retval);
2777 }
2778 return(retval);
2779}
2780
2781static int
2782xptdefbusfunc(struct cam_eb *bus, void *arg)
2783{
2784 struct xpt_traverse_config *tr_config;
2785
2786 tr_config = (struct xpt_traverse_config *)arg;
2787
2788 if (tr_config->depth == XPT_DEPTH_BUS) {
2789 xpt_busfunc_t *tr_func;
2790
2791 tr_func = (xpt_busfunc_t *)tr_config->tr_func;
2792
2793 return(tr_func(bus, tr_config->tr_arg));
2794 } else
2795 return(xpttargettraverse(bus, NULL, xptdeftargetfunc, arg));
2796}
2797
2798static int
2799xptdeftargetfunc(struct cam_et *target, void *arg)
2800{
2801 struct xpt_traverse_config *tr_config;
2802
2803 tr_config = (struct xpt_traverse_config *)arg;
2804
2805 if (tr_config->depth == XPT_DEPTH_TARGET) {
2806 xpt_targetfunc_t *tr_func;
2807
2808 tr_func = (xpt_targetfunc_t *)tr_config->tr_func;
2809
2810 return(tr_func(target, tr_config->tr_arg));
2811 } else
2812 return(xptdevicetraverse(target, NULL, xptdefdevicefunc, arg));
2813}
2814
2815static int
2816xptdefdevicefunc(struct cam_ed *device, void *arg)
2817{
2818 struct xpt_traverse_config *tr_config;
2819
2820 tr_config = (struct xpt_traverse_config *)arg;
2821
2822 if (tr_config->depth == XPT_DEPTH_DEVICE) {
2823 xpt_devicefunc_t *tr_func;
2824
2825 tr_func = (xpt_devicefunc_t *)tr_config->tr_func;
2826
2827 return(tr_func(device, tr_config->tr_arg));
2828 } else
2829 return(xptperiphtraverse(device, NULL, xptdefperiphfunc, arg));
2830}
2831
2832static int
2833xptdefperiphfunc(struct cam_periph *periph, void *arg)
2834{
2835 struct xpt_traverse_config *tr_config;
2836 xpt_periphfunc_t *tr_func;
2837
2838 tr_config = (struct xpt_traverse_config *)arg;
2839
2840 tr_func = (xpt_periphfunc_t *)tr_config->tr_func;
2841
2842 /*
2843 * Unlike the other default functions, we don't check for depth
2844 * here. The peripheral driver level is the last level in the EDT,
2845 * so if we're here, we should execute the function in question.
2846 */
2847 return(tr_func(periph, tr_config->tr_arg));
2848}
2849
2850/*
2851 * Execute the given function for every bus in the EDT.
2852 */
2853static int
2854xpt_for_all_busses(xpt_busfunc_t *tr_func, void *arg)
2855{
2856 struct xpt_traverse_config tr_config;
2857
2858 tr_config.depth = XPT_DEPTH_BUS;
2859 tr_config.tr_func = tr_func;
2860 tr_config.tr_arg = arg;
2861
2862 return(xptbustraverse(NULL, xptdefbusfunc, &tr_config));
2863}
2864
2865#ifdef notusedyet
2866/*
2867 * Execute the given function for every target in the EDT.
2868 */
2869static int
2870xpt_for_all_targets(xpt_targetfunc_t *tr_func, void *arg)
2871{
2872 struct xpt_traverse_config tr_config;
2873
2874 tr_config.depth = XPT_DEPTH_TARGET;
2875 tr_config.tr_func = tr_func;
2876 tr_config.tr_arg = arg;
2877
2878 return(xptbustraverse(NULL, xptdefbusfunc, &tr_config));
2879}
2880#endif /* notusedyet */
2881
2882/*
2883 * Execute the given function for every device in the EDT.
2884 */
2885static int
2886xpt_for_all_devices(xpt_devicefunc_t *tr_func, void *arg)
2887{
2888 struct xpt_traverse_config tr_config;
2889
2890 tr_config.depth = XPT_DEPTH_DEVICE;
2891 tr_config.tr_func = tr_func;
2892 tr_config.tr_arg = arg;
2893
2894 return(xptbustraverse(NULL, xptdefbusfunc, &tr_config));
2895}
2896
2897#ifdef notusedyet
2898/*
2899 * Execute the given function for every peripheral in the EDT.
2900 */
2901static int
2902xpt_for_all_periphs(xpt_periphfunc_t *tr_func, void *arg)
2903{
2904 struct xpt_traverse_config tr_config;
2905
2906 tr_config.depth = XPT_DEPTH_PERIPH;
2907 tr_config.tr_func = tr_func;
2908 tr_config.tr_arg = arg;
2909
2910 return(xptbustraverse(NULL, xptdefbusfunc, &tr_config));
2911}
2912#endif /* notusedyet */
2913
2914static int
2915xptsetasyncfunc(struct cam_ed *device, void *arg)
2916{
2917 struct cam_path path;
2918 struct ccb_getdev cgd;
2919 struct async_node *cur_entry;
2920
2921 cur_entry = (struct async_node *)arg;
2922
2923 /*
2924 * Don't report unconfigured devices (Wildcard devs,
2925 * devices only for target mode, device instances
2926 * that have been invalidated but are waiting for
2927 * their last reference count to be released).
2928 */
2929 if ((device->flags & CAM_DEV_UNCONFIGURED) != 0)
2930 return (1);
2931
2932 xpt_compile_path(&path,
2933 NULL,
2934 device->target->bus->path_id,
2935 device->target->target_id,
2936 device->lun_id);
2937 xpt_setup_ccb(&cgd.ccb_h, &path, /*priority*/1);
2938 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
2939 xpt_action((union ccb *)&cgd);
2940 cur_entry->callback(cur_entry->callback_arg,
2941 AC_FOUND_DEVICE,
2942 &path, &cgd);
2943 xpt_release_path(&path);
2944
2945 return(1);
2946}
2947
2948static int
2949xptsetasyncbusfunc(struct cam_eb *bus, void *arg)
2950{
2951 struct cam_path path;
2952 struct ccb_pathinq cpi;
2953 struct async_node *cur_entry;
2954
2955 cur_entry = (struct async_node *)arg;
2956
2957 xpt_compile_path(&path, /*periph*/NULL,
2958 bus->sim->path_id,
2959 CAM_TARGET_WILDCARD,
2960 CAM_LUN_WILDCARD);
2961 xpt_setup_ccb(&cpi.ccb_h, &path, /*priority*/1);
2962 cpi.ccb_h.func_code = XPT_PATH_INQ;
2963 xpt_action((union ccb *)&cpi);
2964 cur_entry->callback(cur_entry->callback_arg,
2965 AC_PATH_REGISTERED,
2966 &path, &cpi);
2967 xpt_release_path(&path);
2968
2969 return(1);
2970}
2971
2972void
2973xpt_action(union ccb *start_ccb)
2974{
2975 int iopl;
2976
2977 GIANT_REQUIRED;
2978
2979 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("xpt_action\n"));
2980
2981 start_ccb->ccb_h.status = CAM_REQ_INPROG;
2982
2983 iopl = splsoftcam();
2984 switch (start_ccb->ccb_h.func_code) {
2985 case XPT_SCSI_IO:
2986 {
2987#ifdef CAM_NEW_TRAN_CODE
2988 struct cam_ed *device;
2989#endif /* CAM_NEW_TRAN_CODE */
2990#ifdef CAMDEBUG
2991 char cdb_str[(SCSI_MAX_CDBLEN * 3) + 1];
2992 struct cam_path *path;
2993
2994 path = start_ccb->ccb_h.path;
2995#endif
2996
2997 /*
2998 * For the sake of compatibility with SCSI-1
2999 * devices that may not understand the identify
3000 * message, we include lun information in the
3001 * second byte of all commands. SCSI-1 specifies
3002 * that luns are a 3 bit value and reserves only 3
3003 * bits for lun information in the CDB. Later
3004 * revisions of the SCSI spec allow for more than 8
3005 * luns, but have deprecated lun information in the
3006 * CDB. So, if the lun won't fit, we must omit.
3007 *
3008 * Also be aware that during initial probing for devices,
3009 * the inquiry information is unknown but initialized to 0.
3010 * This means that this code will be exercised while probing
3011 * devices with an ANSI revision greater than 2.
3012 */
3013#ifdef CAM_NEW_TRAN_CODE
3014 device = start_ccb->ccb_h.path->device;
3015 if (device->protocol_version <= SCSI_REV_2
3016#else /* CAM_NEW_TRAN_CODE */
3017 if (SID_ANSI_REV(&start_ccb->ccb_h.path->device->inq_data) <= 2
3018#endif /* CAM_NEW_TRAN_CODE */
3019 && start_ccb->ccb_h.target_lun < 8
3020 && (start_ccb->ccb_h.flags & CAM_CDB_POINTER) == 0) {
3021
3022 start_ccb->csio.cdb_io.cdb_bytes[1] |=
3023 start_ccb->ccb_h.target_lun << 5;
3024 }
3025 start_ccb->csio.scsi_status = SCSI_STATUS_OK;
3026 CAM_DEBUG(path, CAM_DEBUG_CDB,("%s. CDB: %s\n",
3027 scsi_op_desc(start_ccb->csio.cdb_io.cdb_bytes[0],
3028 &path->device->inq_data),
3029 scsi_cdb_string(start_ccb->csio.cdb_io.cdb_bytes,
3030 cdb_str, sizeof(cdb_str))));
3031 }
3032 /* FALLTHROUGH */
3033 case XPT_TARGET_IO:
3034 case XPT_CONT_TARGET_IO:
3035 start_ccb->csio.sense_resid = 0;
3036 start_ccb->csio.resid = 0;
3037 /* FALLTHROUGH */
3038 case XPT_RESET_DEV:
3039 case XPT_ENG_EXEC:
3040 {
3041 struct cam_path *path;
3042 int s;
3043 int runq;
3044
3045 path = start_ccb->ccb_h.path;
3046 s = splsoftcam();
3047
3048 cam_ccbq_insert_ccb(&path->device->ccbq, start_ccb);
3049 if (path->device->qfrozen_cnt == 0)
3050 runq = xpt_schedule_dev_sendq(path->bus, path->device);
3051 else
3052 runq = 0;
3053 splx(s);
3054 if (runq != 0)
3055 xpt_run_dev_sendq(path->bus);
3056 break;
3057 }
3058 case XPT_SET_TRAN_SETTINGS:
3059 {
3060 xpt_set_transfer_settings(&start_ccb->cts,
3061 start_ccb->ccb_h.path->device,
3062 /*async_update*/FALSE);
3063 break;
3064 }
3065 case XPT_CALC_GEOMETRY:
3066 {
3067 struct cam_sim *sim;
3068
3069 /* Filter out garbage */
3070 if (start_ccb->ccg.block_size == 0
3071 || start_ccb->ccg.volume_size == 0) {
3072 start_ccb->ccg.cylinders = 0;
3073 start_ccb->ccg.heads = 0;
3074 start_ccb->ccg.secs_per_track = 0;
3075 start_ccb->ccb_h.status = CAM_REQ_CMP;
3076 break;
3077 }
3078#ifdef PC98
3079 /*
3080 * In a PC-98 system, geometry translation depens on
3081 * the "real" device geometry obtained from mode page 4.
3082 * SCSI geometry translation is performed in the
3083 * initialization routine of the SCSI BIOS and the result
3084 * stored in host memory. If the translation is available
3085 * in host memory, use it. If not, rely on the default
3086 * translation the device driver performs.
3087 */
3088 if (scsi_da_bios_params(&start_ccb->ccg) != 0) {
3089 start_ccb->ccb_h.status = CAM_REQ_CMP;
3090 break;
3091 }
3092#endif
3093 sim = start_ccb->ccb_h.path->bus->sim;
3094 (*(sim->sim_action))(sim, start_ccb);
3095 break;
3096 }
3097 case XPT_ABORT:
3098 {
3099 union ccb* abort_ccb;
3100 int s;
3101
3102 abort_ccb = start_ccb->cab.abort_ccb;
3103 if (XPT_FC_IS_DEV_QUEUED(abort_ccb)) {
3104
3105 if (abort_ccb->ccb_h.pinfo.index >= 0) {
3106 struct cam_ccbq *ccbq;
3107
3108 ccbq = &abort_ccb->ccb_h.path->device->ccbq;
3109 cam_ccbq_remove_ccb(ccbq, abort_ccb);
3110 abort_ccb->ccb_h.status =
3111 CAM_REQ_ABORTED|CAM_DEV_QFRZN;
3112 xpt_freeze_devq(abort_ccb->ccb_h.path, 1);
3113 s = splcam();
3114 xpt_done(abort_ccb);
3115 splx(s);
3116 start_ccb->ccb_h.status = CAM_REQ_CMP;
3117 break;
3118 }
3119 if (abort_ccb->ccb_h.pinfo.index == CAM_UNQUEUED_INDEX
3120 && (abort_ccb->ccb_h.status & CAM_SIM_QUEUED) == 0) {
3121 /*
3122 * We've caught this ccb en route to
3123 * the SIM. Flag it for abort and the
3124 * SIM will do so just before starting
3125 * real work on the CCB.
3126 */
3127 abort_ccb->ccb_h.status =
3128 CAM_REQ_ABORTED|CAM_DEV_QFRZN;
3129 xpt_freeze_devq(abort_ccb->ccb_h.path, 1);
3130 start_ccb->ccb_h.status = CAM_REQ_CMP;
3131 break;
3132 }
3133 }
3134 if (XPT_FC_IS_QUEUED(abort_ccb)
3135 && (abort_ccb->ccb_h.pinfo.index == CAM_DONEQ_INDEX)) {
3136 /*
3137 * It's already completed but waiting
3138 * for our SWI to get to it.
3139 */
3140 start_ccb->ccb_h.status = CAM_UA_ABORT;
3141 break;
3142 }
3143 /*
3144 * If we weren't able to take care of the abort request
3145 * in the XPT, pass the request down to the SIM for processing.
3146 */
3147 }
3148 /* FALLTHROUGH */
3149 case XPT_ACCEPT_TARGET_IO:
3150 case XPT_EN_LUN:
3151 case XPT_IMMED_NOTIFY:
3152 case XPT_NOTIFY_ACK:
3153 case XPT_GET_TRAN_SETTINGS:
3154 case XPT_RESET_BUS:
3155 {
3156 struct cam_sim *sim;
3157
3158 sim = start_ccb->ccb_h.path->bus->sim;
3159 (*(sim->sim_action))(sim, start_ccb);
3160 break;
3161 }
3162 case XPT_PATH_INQ:
3163 {
3164 struct cam_sim *sim;
3165
3166 sim = start_ccb->ccb_h.path->bus->sim;
3167 (*(sim->sim_action))(sim, start_ccb);
3168 break;
3169 }
3170 case XPT_PATH_STATS:
3171 start_ccb->cpis.last_reset =
3172 start_ccb->ccb_h.path->bus->last_reset;
3173 start_ccb->ccb_h.status = CAM_REQ_CMP;
3174 break;
3175 case XPT_GDEV_TYPE:
3176 {
3177 struct cam_ed *dev;
3178 int s;
3179
3180 dev = start_ccb->ccb_h.path->device;
3181 s = splcam();
3182 if ((dev->flags & CAM_DEV_UNCONFIGURED) != 0) {
3183 start_ccb->ccb_h.status = CAM_DEV_NOT_THERE;
3184 } else {
3185 struct ccb_getdev *cgd;
3186 struct cam_eb *bus;
3187 struct cam_et *tar;
3188
3189 cgd = &start_ccb->cgd;
3190 bus = cgd->ccb_h.path->bus;
3191 tar = cgd->ccb_h.path->target;
3192 cgd->inq_data = dev->inq_data;
3193 cgd->ccb_h.status = CAM_REQ_CMP;
3194 cgd->serial_num_len = dev->serial_num_len;
3195 if ((dev->serial_num_len > 0)
3196 && (dev->serial_num != NULL))
3197 bcopy(dev->serial_num, cgd->serial_num,
3198 dev->serial_num_len);
3199 }
3200 splx(s);
3201 break;
3202 }
3203 case XPT_GDEV_STATS:
3204 {
3205 struct cam_ed *dev;
3206 int s;
3207
3208 dev = start_ccb->ccb_h.path->device;
3209 s = splcam();
3210 if ((dev->flags & CAM_DEV_UNCONFIGURED) != 0) {
3211 start_ccb->ccb_h.status = CAM_DEV_NOT_THERE;
3212 } else {
3213 struct ccb_getdevstats *cgds;
3214 struct cam_eb *bus;
3215 struct cam_et *tar;
3216
3217 cgds = &start_ccb->cgds;
3218 bus = cgds->ccb_h.path->bus;
3219 tar = cgds->ccb_h.path->target;
3220 cgds->dev_openings = dev->ccbq.dev_openings;
3221 cgds->dev_active = dev->ccbq.dev_active;
3222 cgds->devq_openings = dev->ccbq.devq_openings;
3223 cgds->devq_queued = dev->ccbq.queue.entries;
3224 cgds->held = dev->ccbq.held;
3225 cgds->last_reset = tar->last_reset;
3226 cgds->maxtags = dev->quirk->maxtags;
3227 cgds->mintags = dev->quirk->mintags;
3228 if (timevalcmp(&tar->last_reset, &bus->last_reset, <))
3229 cgds->last_reset = bus->last_reset;
3230 cgds->ccb_h.status = CAM_REQ_CMP;
3231 }
3232 splx(s);
3233 break;
3234 }
3235 case XPT_GDEVLIST:
3236 {
3237 struct cam_periph *nperiph;
3238 struct periph_list *periph_head;
3239 struct ccb_getdevlist *cgdl;
3240 u_int i;
3241 int s;
3242 struct cam_ed *device;
3243 int found;
3244
3245
3246 found = 0;
3247
3248 /*
3249 * Don't want anyone mucking with our data.
3250 */
3251 s = splcam();
3252 device = start_ccb->ccb_h.path->device;
3253 periph_head = &device->periphs;
3254 cgdl = &start_ccb->cgdl;
3255
3256 /*
3257 * Check and see if the list has changed since the user
3258 * last requested a list member. If so, tell them that the
3259 * list has changed, and therefore they need to start over
3260 * from the beginning.
3261 */
3262 if ((cgdl->index != 0) &&
3263 (cgdl->generation != device->generation)) {
3264 cgdl->status = CAM_GDEVLIST_LIST_CHANGED;
3265 splx(s);
3266 break;
3267 }
3268
3269 /*
3270 * Traverse the list of peripherals and attempt to find
3271 * the requested peripheral.
3272 */
3273 for (nperiph = SLIST_FIRST(periph_head), i = 0;
3274 (nperiph != NULL) && (i <= cgdl->index);
3275 nperiph = SLIST_NEXT(nperiph, periph_links), i++) {
3276 if (i == cgdl->index) {
3277 strncpy(cgdl->periph_name,
3278 nperiph->periph_name,
3279 DEV_IDLEN);
3280 cgdl->unit_number = nperiph->unit_number;
3281 found = 1;
3282 }
3283 }
3284 if (found == 0) {
3285 cgdl->status = CAM_GDEVLIST_ERROR;
3286 splx(s);
3287 break;
3288 }
3289
3290 if (nperiph == NULL)
3291 cgdl->status = CAM_GDEVLIST_LAST_DEVICE;
3292 else
3293 cgdl->status = CAM_GDEVLIST_MORE_DEVS;
3294
3295 cgdl->index++;
3296 cgdl->generation = device->generation;
3297
3298 splx(s);
3299 cgdl->ccb_h.status = CAM_REQ_CMP;
3300 break;
3301 }
3302 case XPT_DEV_MATCH:
3303 {
3304 int s;
3305 dev_pos_type position_type;
3306 struct ccb_dev_match *cdm;
3307
3308 cdm = &start_ccb->cdm;
3309
3310 /*
3311 * Prevent EDT changes while we traverse it.
3312 */
3313 s = splcam();
3314 /*
3315 * There are two ways of getting at information in the EDT.
3316 * The first way is via the primary EDT tree. It starts
3317 * with a list of busses, then a list of targets on a bus,
3318 * then devices/luns on a target, and then peripherals on a
3319 * device/lun. The "other" way is by the peripheral driver
3320 * lists. The peripheral driver lists are organized by
3321 * peripheral driver. (obviously) So it makes sense to
3322 * use the peripheral driver list if the user is looking
3323 * for something like "da1", or all "da" devices. If the
3324 * user is looking for something on a particular bus/target
3325 * or lun, it's generally better to go through the EDT tree.
3326 */
3327
3328 if (cdm->pos.position_type != CAM_DEV_POS_NONE)
3329 position_type = cdm->pos.position_type;
3330 else {
3331 u_int i;
3332
3333 position_type = CAM_DEV_POS_NONE;
3334
3335 for (i = 0; i < cdm->num_patterns; i++) {
3336 if ((cdm->patterns[i].type == DEV_MATCH_BUS)
3337 ||(cdm->patterns[i].type == DEV_MATCH_DEVICE)){
3338 position_type = CAM_DEV_POS_EDT;
3339 break;
3340 }
3341 }
3342
3343 if (cdm->num_patterns == 0)
3344 position_type = CAM_DEV_POS_EDT;
3345 else if (position_type == CAM_DEV_POS_NONE)
3346 position_type = CAM_DEV_POS_PDRV;
3347 }
3348
3349 switch(position_type & CAM_DEV_POS_TYPEMASK) {
3350 case CAM_DEV_POS_EDT:
3351 xptedtmatch(cdm);
3352 break;
3353 case CAM_DEV_POS_PDRV:
3354 xptperiphlistmatch(cdm);
3355 break;
3356 default:
3357 cdm->status = CAM_DEV_MATCH_ERROR;
3358 break;
3359 }
3360
3361 splx(s);
3362
3363 if (cdm->status == CAM_DEV_MATCH_ERROR)
3364 start_ccb->ccb_h.status = CAM_REQ_CMP_ERR;
3365 else
3366 start_ccb->ccb_h.status = CAM_REQ_CMP;
3367
3368 break;
3369 }
3370 case XPT_SASYNC_CB:
3371 {
3372 struct ccb_setasync *csa;
3373 struct async_node *cur_entry;
3374 struct async_list *async_head;
3375 u_int32_t added;
3376 int s;
3377
3378 csa = &start_ccb->csa;
3379 added = csa->event_enable;
3380 async_head = &csa->ccb_h.path->device->asyncs;
3381
3382 /*
3383 * If there is already an entry for us, simply
3384 * update it.
3385 */
3386 s = splcam();
3387 cur_entry = SLIST_FIRST(async_head);
3388 while (cur_entry != NULL) {
3389 if ((cur_entry->callback_arg == csa->callback_arg)
3390 && (cur_entry->callback == csa->callback))
3391 break;
3392 cur_entry = SLIST_NEXT(cur_entry, links);
3393 }
3394
3395 if (cur_entry != NULL) {
3396 /*
3397 * If the request has no flags set,
3398 * remove the entry.
3399 */
3400 added &= ~cur_entry->event_enable;
3401 if (csa->event_enable == 0) {
3402 SLIST_REMOVE(async_head, cur_entry,
3403 async_node, links);
3404 csa->ccb_h.path->device->refcount--;
|
5113 xpt_release_target(bus, target);
5114 } else
5115 splx(s);
5116}
5117
5118static u_int32_t
5119xpt_dev_ccbq_resize(struct cam_path *path, int newopenings)
5120{
5121 int s;
5122 int diff;
5123 int result;
5124 struct cam_ed *dev;
5125
5126 dev = path->device;
5127 s = splsoftcam();
5128
5129 diff = newopenings - (dev->ccbq.dev_active + dev->ccbq.dev_openings);
5130 result = cam_ccbq_resize(&dev->ccbq, newopenings);
5131 if (result == CAM_REQ_CMP && (diff < 0)) {
5132 dev->flags |= CAM_DEV_RESIZE_QUEUE_NEEDED;
5133 }
5134 if ((dev->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
5135 || (dev->inq_flags & SID_CmdQue) != 0)
5136 dev->tag_saved_openings = newopenings;
5137 /* Adjust the global limit */
5138 xpt_max_ccbs += diff;
5139 splx(s);
5140 return (result);
5141}
5142
5143static struct cam_eb *
5144xpt_find_bus(path_id_t path_id)
5145{
5146 struct cam_eb *bus;
5147
5148 for (bus = TAILQ_FIRST(&xpt_busses);
5149 bus != NULL;
5150 bus = TAILQ_NEXT(bus, links)) {
5151 if (bus->path_id == path_id) {
5152 bus->refcount++;
5153 break;
5154 }
5155 }
5156 return (bus);
5157}
5158
5159static struct cam_et *
5160xpt_find_target(struct cam_eb *bus, target_id_t target_id)
5161{
5162 struct cam_et *target;
5163
5164 for (target = TAILQ_FIRST(&bus->et_entries);
5165 target != NULL;
5166 target = TAILQ_NEXT(target, links)) {
5167 if (target->target_id == target_id) {
5168 target->refcount++;
5169 break;
5170 }
5171 }
5172 return (target);
5173}
5174
5175static struct cam_ed *
5176xpt_find_device(struct cam_et *target, lun_id_t lun_id)
5177{
5178 struct cam_ed *device;
5179
5180 for (device = TAILQ_FIRST(&target->ed_entries);
5181 device != NULL;
5182 device = TAILQ_NEXT(device, links)) {
5183 if (device->lun_id == lun_id) {
5184 device->refcount++;
5185 break;
5186 }
5187 }
5188 return (device);
5189}
5190
5191typedef struct {
5192 union ccb *request_ccb;
5193 struct ccb_pathinq *cpi;
5194 int pending_count;
5195} xpt_scan_bus_info;
5196
5197/*
5198 * To start a scan, request_ccb is an XPT_SCAN_BUS ccb.
5199 * As the scan progresses, xpt_scan_bus is used as the
5200 * callback on completion function.
5201 */
5202static void
5203xpt_scan_bus(struct cam_periph *periph, union ccb *request_ccb)
5204{
5205 CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE,
5206 ("xpt_scan_bus\n"));
5207 switch (request_ccb->ccb_h.func_code) {
5208 case XPT_SCAN_BUS:
5209 {
5210 xpt_scan_bus_info *scan_info;
5211 union ccb *work_ccb;
5212 struct cam_path *path;
5213 u_int i;
5214 u_int max_target;
5215 u_int initiator_id;
5216
5217 /* Find out the characteristics of the bus */
5218 work_ccb = xpt_alloc_ccb();
5219 xpt_setup_ccb(&work_ccb->ccb_h, request_ccb->ccb_h.path,
5220 request_ccb->ccb_h.pinfo.priority);
5221 work_ccb->ccb_h.func_code = XPT_PATH_INQ;
5222 xpt_action(work_ccb);
5223 if (work_ccb->ccb_h.status != CAM_REQ_CMP) {
5224 request_ccb->ccb_h.status = work_ccb->ccb_h.status;
5225 xpt_free_ccb(work_ccb);
5226 xpt_done(request_ccb);
5227 return;
5228 }
5229
5230 if ((work_ccb->cpi.hba_misc & PIM_NOINITIATOR) != 0) {
5231 /*
5232 * Can't scan the bus on an adapter that
5233 * cannot perform the initiator role.
5234 */
5235 request_ccb->ccb_h.status = CAM_REQ_CMP;
5236 xpt_free_ccb(work_ccb);
5237 xpt_done(request_ccb);
5238 return;
5239 }
5240
5241 /* Save some state for use while we probe for devices */
5242 scan_info = (xpt_scan_bus_info *)
5243 malloc(sizeof(xpt_scan_bus_info), M_TEMP, M_WAITOK);
5244 scan_info->request_ccb = request_ccb;
5245 scan_info->cpi = &work_ccb->cpi;
5246
5247 /* Cache on our stack so we can work asynchronously */
5248 max_target = scan_info->cpi->max_target;
5249 initiator_id = scan_info->cpi->initiator_id;
5250
5251 /*
5252 * Don't count the initiator if the
5253 * initiator is addressable.
5254 */
5255 scan_info->pending_count = max_target + 1;
5256 if (initiator_id <= max_target)
5257 scan_info->pending_count--;
5258
5259 for (i = 0; i <= max_target; i++) {
5260 cam_status status;
5261 if (i == initiator_id)
5262 continue;
5263
5264 status = xpt_create_path(&path, xpt_periph,
5265 request_ccb->ccb_h.path_id,
5266 i, 0);
5267 if (status != CAM_REQ_CMP) {
5268 printf("xpt_scan_bus: xpt_create_path failed"
5269 " with status %#x, bus scan halted\n",
5270 status);
5271 break;
5272 }
5273 work_ccb = xpt_alloc_ccb();
5274 xpt_setup_ccb(&work_ccb->ccb_h, path,
5275 request_ccb->ccb_h.pinfo.priority);
5276 work_ccb->ccb_h.func_code = XPT_SCAN_LUN;
5277 work_ccb->ccb_h.cbfcnp = xpt_scan_bus;
5278 work_ccb->ccb_h.ppriv_ptr0 = scan_info;
5279 work_ccb->crcn.flags = request_ccb->crcn.flags;
5280 xpt_action(work_ccb);
5281 }
5282 break;
5283 }
5284 case XPT_SCAN_LUN:
5285 {
5286 xpt_scan_bus_info *scan_info;
5287 path_id_t path_id;
5288 target_id_t target_id;
5289 lun_id_t lun_id;
5290
5291 /* Reuse the same CCB to query if a device was really found */
5292 scan_info = (xpt_scan_bus_info *)request_ccb->ccb_h.ppriv_ptr0;
5293 xpt_setup_ccb(&request_ccb->ccb_h, request_ccb->ccb_h.path,
5294 request_ccb->ccb_h.pinfo.priority);
5295 request_ccb->ccb_h.func_code = XPT_GDEV_TYPE;
5296
5297 path_id = request_ccb->ccb_h.path_id;
5298 target_id = request_ccb->ccb_h.target_id;
5299 lun_id = request_ccb->ccb_h.target_lun;
5300 xpt_action(request_ccb);
5301
5302 if (request_ccb->ccb_h.status != CAM_REQ_CMP) {
5303 struct cam_ed *device;
5304 struct cam_et *target;
5305 int s, phl;
5306
5307 /*
5308 * If we already probed lun 0 successfully, or
5309 * we have additional configured luns on this
5310 * target that might have "gone away", go onto
5311 * the next lun.
5312 */
5313 target = request_ccb->ccb_h.path->target;
5314 /*
5315 * We may touch devices that we don't
5316 * hold references too, so ensure they
5317 * don't disappear out from under us.
5318 * The target above is referenced by the
5319 * path in the request ccb.
5320 */
5321 phl = 0;
5322 s = splcam();
5323 device = TAILQ_FIRST(&target->ed_entries);
5324 if (device != NULL) {
5325 phl = CAN_SRCH_HI(device);
5326 if (device->lun_id == 0)
5327 device = TAILQ_NEXT(device, links);
5328 }
5329 splx(s);
5330 if ((lun_id != 0) || (device != NULL)) {
5331 if (lun_id < (CAM_SCSI2_MAXLUN-1) || phl)
5332 lun_id++;
5333 }
5334 } else {
5335 struct cam_ed *device;
5336
5337 device = request_ccb->ccb_h.path->device;
5338
5339 if ((device->quirk->quirks & CAM_QUIRK_NOLUNS) == 0) {
5340 /* Try the next lun */
5341 if (lun_id < (CAM_SCSI2_MAXLUN-1)
5342 || CAN_SRCH_HI(device))
5343 lun_id++;
5344 }
5345 }
5346
5347 xpt_free_path(request_ccb->ccb_h.path);
5348
5349 /* Check Bounds */
5350 if ((lun_id == request_ccb->ccb_h.target_lun)
5351 || lun_id > scan_info->cpi->max_lun) {
5352 /* We're done */
5353
5354 xpt_free_ccb(request_ccb);
5355 scan_info->pending_count--;
5356 if (scan_info->pending_count == 0) {
5357 xpt_free_ccb((union ccb *)scan_info->cpi);
5358 request_ccb = scan_info->request_ccb;
5359 free(scan_info, M_TEMP);
5360 request_ccb->ccb_h.status = CAM_REQ_CMP;
5361 xpt_done(request_ccb);
5362 }
5363 } else {
5364 /* Try the next device */
5365 struct cam_path *path;
5366 cam_status status;
5367
5368 status = xpt_create_path(&path, xpt_periph,
5369 path_id, target_id, lun_id);
5370 if (status != CAM_REQ_CMP) {
5371 printf("xpt_scan_bus: xpt_create_path failed "
5372 "with status %#x, halting LUN scan\n",
5373 status);
5374 xpt_free_ccb(request_ccb);
5375 scan_info->pending_count--;
5376 if (scan_info->pending_count == 0) {
5377 xpt_free_ccb(
5378 (union ccb *)scan_info->cpi);
5379 request_ccb = scan_info->request_ccb;
5380 free(scan_info, M_TEMP);
5381 request_ccb->ccb_h.status = CAM_REQ_CMP;
5382 xpt_done(request_ccb);
5383 }
5384 break;
5385 }
5386 xpt_setup_ccb(&request_ccb->ccb_h, path,
5387 request_ccb->ccb_h.pinfo.priority);
5388 request_ccb->ccb_h.func_code = XPT_SCAN_LUN;
5389 request_ccb->ccb_h.cbfcnp = xpt_scan_bus;
5390 request_ccb->ccb_h.ppriv_ptr0 = scan_info;
5391 request_ccb->crcn.flags =
5392 scan_info->request_ccb->crcn.flags;
5393 xpt_action(request_ccb);
5394 }
5395 break;
5396 }
5397 default:
5398 break;
5399 }
5400}
5401
5402typedef enum {
5403 PROBE_TUR,
5404 PROBE_INQUIRY,
5405 PROBE_FULL_INQUIRY,
5406 PROBE_MODE_SENSE,
5407 PROBE_SERIAL_NUM,
5408 PROBE_TUR_FOR_NEGOTIATION
5409} probe_action;
5410
5411typedef enum {
5412 PROBE_INQUIRY_CKSUM = 0x01,
5413 PROBE_SERIAL_CKSUM = 0x02,
5414 PROBE_NO_ANNOUNCE = 0x04
5415} probe_flags;
5416
5417typedef struct {
5418 TAILQ_HEAD(, ccb_hdr) request_ccbs;
5419 probe_action action;
5420 union ccb saved_ccb;
5421 probe_flags flags;
5422 MD5_CTX context;
5423 u_int8_t digest[16];
5424} probe_softc;
5425
5426static void
5427xpt_scan_lun(struct cam_periph *periph, struct cam_path *path,
5428 cam_flags flags, union ccb *request_ccb)
5429{
5430 struct ccb_pathinq cpi;
5431 cam_status status;
5432 struct cam_path *new_path;
5433 struct cam_periph *old_periph;
5434 int s;
5435
5436 CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE,
5437 ("xpt_scan_lun\n"));
5438
5439 xpt_setup_ccb(&cpi.ccb_h, path, /*priority*/1);
5440 cpi.ccb_h.func_code = XPT_PATH_INQ;
5441 xpt_action((union ccb *)&cpi);
5442
5443 if (cpi.ccb_h.status != CAM_REQ_CMP) {
5444 if (request_ccb != NULL) {
5445 request_ccb->ccb_h.status = cpi.ccb_h.status;
5446 xpt_done(request_ccb);
5447 }
5448 return;
5449 }
5450
5451 if ((cpi.hba_misc & PIM_NOINITIATOR) != 0) {
5452 /*
5453 * Can't scan the bus on an adapter that
5454 * cannot perform the initiator role.
5455 */
5456 if (request_ccb != NULL) {
5457 request_ccb->ccb_h.status = CAM_REQ_CMP;
5458 xpt_done(request_ccb);
5459 }
5460 return;
5461 }
5462
5463 if (request_ccb == NULL) {
5464 request_ccb = malloc(sizeof(union ccb), M_TEMP, M_NOWAIT);
5465 if (request_ccb == NULL) {
5466 xpt_print_path(path);
5467 printf("xpt_scan_lun: can't allocate CCB, can't "
5468 "continue\n");
5469 return;
5470 }
5471 new_path = malloc(sizeof(*new_path), M_TEMP, M_NOWAIT);
5472 if (new_path == NULL) {
5473 xpt_print_path(path);
5474 printf("xpt_scan_lun: can't allocate path, can't "
5475 "continue\n");
5476 free(request_ccb, M_TEMP);
5477 return;
5478 }
5479 status = xpt_compile_path(new_path, xpt_periph,
5480 path->bus->path_id,
5481 path->target->target_id,
5482 path->device->lun_id);
5483
5484 if (status != CAM_REQ_CMP) {
5485 xpt_print_path(path);
5486 printf("xpt_scan_lun: can't compile path, can't "
5487 "continue\n");
5488 free(request_ccb, M_TEMP);
5489 free(new_path, M_TEMP);
5490 return;
5491 }
5492 xpt_setup_ccb(&request_ccb->ccb_h, new_path, /*priority*/ 1);
5493 request_ccb->ccb_h.cbfcnp = xptscandone;
5494 request_ccb->ccb_h.func_code = XPT_SCAN_LUN;
5495 request_ccb->crcn.flags = flags;
5496 }
5497
5498 s = splsoftcam();
5499 if ((old_periph = cam_periph_find(path, "probe")) != NULL) {
5500 probe_softc *softc;
5501
5502 softc = (probe_softc *)old_periph->softc;
5503 TAILQ_INSERT_TAIL(&softc->request_ccbs, &request_ccb->ccb_h,
5504 periph_links.tqe);
5505 } else {
5506 status = cam_periph_alloc(proberegister, NULL, probecleanup,
5507 probestart, "probe",
5508 CAM_PERIPH_BIO,
5509 request_ccb->ccb_h.path, NULL, 0,
5510 request_ccb);
5511
5512 if (status != CAM_REQ_CMP) {
5513 xpt_print_path(path);
5514 printf("xpt_scan_lun: cam_alloc_periph returned an "
5515 "error, can't continue probe\n");
5516 request_ccb->ccb_h.status = status;
5517 xpt_done(request_ccb);
5518 }
5519 }
5520 splx(s);
5521}
5522
5523static void
5524xptscandone(struct cam_periph *periph, union ccb *done_ccb)
5525{
5526 xpt_release_path(done_ccb->ccb_h.path);
5527 free(done_ccb->ccb_h.path, M_TEMP);
5528 free(done_ccb, M_TEMP);
5529}
5530
5531static cam_status
5532proberegister(struct cam_periph *periph, void *arg)
5533{
5534 union ccb *request_ccb; /* CCB representing the probe request */
5535 probe_softc *softc;
5536
5537 request_ccb = (union ccb *)arg;
5538 if (periph == NULL) {
5539 printf("proberegister: periph was NULL!!\n");
5540 return(CAM_REQ_CMP_ERR);
5541 }
5542
5543 if (request_ccb == NULL) {
5544 printf("proberegister: no probe CCB, "
5545 "can't register device\n");
5546 return(CAM_REQ_CMP_ERR);
5547 }
5548
5549 softc = (probe_softc *)malloc(sizeof(*softc), M_TEMP, M_NOWAIT);
5550
5551 if (softc == NULL) {
5552 printf("proberegister: Unable to probe new device. "
5553 "Unable to allocate softc\n");
5554 return(CAM_REQ_CMP_ERR);
5555 }
5556 TAILQ_INIT(&softc->request_ccbs);
5557 TAILQ_INSERT_TAIL(&softc->request_ccbs, &request_ccb->ccb_h,
5558 periph_links.tqe);
5559 softc->flags = 0;
5560 periph->softc = softc;
5561 cam_periph_acquire(periph);
5562 /*
5563 * Ensure we've waited at least a bus settle
5564 * delay before attempting to probe the device.
5565 * For HBAs that don't do bus resets, this won't make a difference.
5566 */
5567 cam_periph_freeze_after_event(periph, &periph->path->bus->last_reset,
5568 scsi_delay);
5569 probeschedule(periph);
5570 return(CAM_REQ_CMP);
5571}
5572
5573static void
5574probeschedule(struct cam_periph *periph)
5575{
5576 struct ccb_pathinq cpi;
5577 union ccb *ccb;
5578 probe_softc *softc;
5579
5580 softc = (probe_softc *)periph->softc;
5581 ccb = (union ccb *)TAILQ_FIRST(&softc->request_ccbs);
5582
5583 xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1);
5584 cpi.ccb_h.func_code = XPT_PATH_INQ;
5585 xpt_action((union ccb *)&cpi);
5586
5587 /*
5588 * If a device has gone away and another device, or the same one,
5589 * is back in the same place, it should have a unit attention
5590 * condition pending. It will not report the unit attention in
5591 * response to an inquiry, which may leave invalid transfer
5592 * negotiations in effect. The TUR will reveal the unit attention
5593 * condition. Only send the TUR for lun 0, since some devices
5594 * will get confused by commands other than inquiry to non-existent
5595 * luns. If you think a device has gone away start your scan from
5596 * lun 0. This will insure that any bogus transfer settings are
5597 * invalidated.
5598 *
5599 * If we haven't seen the device before and the controller supports
5600 * some kind of transfer negotiation, negotiate with the first
5601 * sent command if no bus reset was performed at startup. This
5602 * ensures that the device is not confused by transfer negotiation
5603 * settings left over by loader or BIOS action.
5604 */
5605 if (((ccb->ccb_h.path->device->flags & CAM_DEV_UNCONFIGURED) == 0)
5606 && (ccb->ccb_h.target_lun == 0)) {
5607 softc->action = PROBE_TUR;
5608 } else if ((cpi.hba_inquiry & (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE)) != 0
5609 && (cpi.hba_misc & PIM_NOBUSRESET) != 0) {
5610 proberequestdefaultnegotiation(periph);
5611 softc->action = PROBE_INQUIRY;
5612 } else {
5613 softc->action = PROBE_INQUIRY;
5614 }
5615
5616 if (ccb->crcn.flags & CAM_EXPECT_INQ_CHANGE)
5617 softc->flags |= PROBE_NO_ANNOUNCE;
5618 else
5619 softc->flags &= ~PROBE_NO_ANNOUNCE;
5620
5621 xpt_schedule(periph, ccb->ccb_h.pinfo.priority);
5622}
5623
5624static void
5625probestart(struct cam_periph *periph, union ccb *start_ccb)
5626{
5627 /* Probe the device that our peripheral driver points to */
5628 struct ccb_scsiio *csio;
5629 probe_softc *softc;
5630
5631 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("probestart\n"));
5632
5633 softc = (probe_softc *)periph->softc;
5634 csio = &start_ccb->csio;
5635
5636 switch (softc->action) {
5637 case PROBE_TUR:
5638 case PROBE_TUR_FOR_NEGOTIATION:
5639 {
5640 scsi_test_unit_ready(csio,
5641 /*retries*/4,
5642 probedone,
5643 MSG_SIMPLE_Q_TAG,
5644 SSD_FULL_SIZE,
5645 /*timeout*/60000);
5646 break;
5647 }
5648 case PROBE_INQUIRY:
5649 case PROBE_FULL_INQUIRY:
5650 {
5651 u_int inquiry_len;
5652 struct scsi_inquiry_data *inq_buf;
5653
5654 inq_buf = &periph->path->device->inq_data;
5655 /*
5656 * If the device is currently configured, we calculate an
5657 * MD5 checksum of the inquiry data, and if the serial number
5658 * length is greater than 0, add the serial number data
5659 * into the checksum as well. Once the inquiry and the
5660 * serial number check finish, we attempt to figure out
5661 * whether we still have the same device.
5662 */
5663 if ((periph->path->device->flags & CAM_DEV_UNCONFIGURED) == 0) {
5664
5665 MD5Init(&softc->context);
5666 MD5Update(&softc->context, (unsigned char *)inq_buf,
5667 sizeof(struct scsi_inquiry_data));
5668 softc->flags |= PROBE_INQUIRY_CKSUM;
5669 if (periph->path->device->serial_num_len > 0) {
5670 MD5Update(&softc->context,
5671 periph->path->device->serial_num,
5672 periph->path->device->serial_num_len);
5673 softc->flags |= PROBE_SERIAL_CKSUM;
5674 }
5675 MD5Final(softc->digest, &softc->context);
5676 }
5677
5678 if (softc->action == PROBE_INQUIRY)
5679 inquiry_len = SHORT_INQUIRY_LENGTH;
5680 else
5681 inquiry_len = inq_buf->additional_length
5682 + offsetof(struct scsi_inquiry_data,
5683 additional_length) + 1;
5684
5685 /*
5686 * Some parallel SCSI devices fail to send an
5687 * ignore wide residue message when dealing with
5688 * odd length inquiry requests. Round up to be
5689 * safe.
5690 */
5691 inquiry_len = roundup2(inquiry_len, 2);
5692
5693 scsi_inquiry(csio,
5694 /*retries*/4,
5695 probedone,
5696 MSG_SIMPLE_Q_TAG,
5697 (u_int8_t *)inq_buf,
5698 inquiry_len,
5699 /*evpd*/FALSE,
5700 /*page_code*/0,
5701 SSD_MIN_SIZE,
5702 /*timeout*/60 * 1000);
5703 break;
5704 }
5705 case PROBE_MODE_SENSE:
5706 {
5707 void *mode_buf;
5708 int mode_buf_len;
5709
5710 mode_buf_len = sizeof(struct scsi_mode_header_6)
5711 + sizeof(struct scsi_mode_blk_desc)
5712 + sizeof(struct scsi_control_page);
5713 mode_buf = malloc(mode_buf_len, M_TEMP, M_NOWAIT);
5714 if (mode_buf != NULL) {
5715 scsi_mode_sense(csio,
5716 /*retries*/4,
5717 probedone,
5718 MSG_SIMPLE_Q_TAG,
5719 /*dbd*/FALSE,
5720 SMS_PAGE_CTRL_CURRENT,
5721 SMS_CONTROL_MODE_PAGE,
5722 mode_buf,
5723 mode_buf_len,
5724 SSD_FULL_SIZE,
5725 /*timeout*/60000);
5726 break;
5727 }
5728 xpt_print_path(periph->path);
5729 printf("Unable to mode sense control page - malloc failure\n");
5730 softc->action = PROBE_SERIAL_NUM;
5731 }
5732 /* FALLTHROUGH */
5733 case PROBE_SERIAL_NUM:
5734 {
5735 struct scsi_vpd_unit_serial_number *serial_buf;
5736 struct cam_ed* device;
5737
5738 serial_buf = NULL;
5739 device = periph->path->device;
5740 device->serial_num = NULL;
5741 device->serial_num_len = 0;
5742
5743 if ((device->quirk->quirks & CAM_QUIRK_NOSERIAL) == 0)
5744 serial_buf = (struct scsi_vpd_unit_serial_number *)
5745 malloc(sizeof(*serial_buf), M_TEMP,
5746 M_NOWAIT | M_ZERO);
5747
5748 if (serial_buf != NULL) {
5749 scsi_inquiry(csio,
5750 /*retries*/4,
5751 probedone,
5752 MSG_SIMPLE_Q_TAG,
5753 (u_int8_t *)serial_buf,
5754 sizeof(*serial_buf),
5755 /*evpd*/TRUE,
5756 SVPD_UNIT_SERIAL_NUMBER,
5757 SSD_MIN_SIZE,
5758 /*timeout*/60 * 1000);
5759 break;
5760 }
5761 /*
5762 * We'll have to do without, let our probedone
5763 * routine finish up for us.
5764 */
5765 start_ccb->csio.data_ptr = NULL;
5766 probedone(periph, start_ccb);
5767 return;
5768 }
5769 }
5770 xpt_action(start_ccb);
5771}
5772
5773static void
5774proberequestdefaultnegotiation(struct cam_periph *periph)
5775{
5776 struct ccb_trans_settings cts;
5777
5778 xpt_setup_ccb(&cts.ccb_h, periph->path, /*priority*/1);
5779 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
5780#ifdef CAM_NEW_TRAN_CODE
5781 cts.type = CTS_TYPE_USER_SETTINGS;
5782#else /* CAM_NEW_TRAN_CODE */
5783 cts.flags = CCB_TRANS_USER_SETTINGS;
5784#endif /* CAM_NEW_TRAN_CODE */
5785 xpt_action((union ccb *)&cts);
5786 cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
5787#ifdef CAM_NEW_TRAN_CODE
5788 cts.type = CTS_TYPE_CURRENT_SETTINGS;
5789#else /* CAM_NEW_TRAN_CODE */
5790 cts.flags &= ~CCB_TRANS_USER_SETTINGS;
5791 cts.flags |= CCB_TRANS_CURRENT_SETTINGS;
5792#endif /* CAM_NEW_TRAN_CODE */
5793 xpt_action((union ccb *)&cts);
5794}
5795
5796static void
5797probedone(struct cam_periph *periph, union ccb *done_ccb)
5798{
5799 probe_softc *softc;
5800 struct cam_path *path;
5801 u_int32_t priority;
5802
5803 CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("probedone\n"));
5804
5805 softc = (probe_softc *)periph->softc;
5806 path = done_ccb->ccb_h.path;
5807 priority = done_ccb->ccb_h.pinfo.priority;
5808
5809 switch (softc->action) {
5810 case PROBE_TUR:
5811 {
5812 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
5813
5814 if (cam_periph_error(done_ccb, 0,
5815 SF_NO_PRINT, NULL) == ERESTART)
5816 return;
5817 else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
5818 /* Don't wedge the queue */
5819 xpt_release_devq(done_ccb->ccb_h.path,
5820 /*count*/1,
5821 /*run_queue*/TRUE);
5822 }
5823 softc->action = PROBE_INQUIRY;
5824 xpt_release_ccb(done_ccb);
5825 xpt_schedule(periph, priority);
5826 return;
5827 }
5828 case PROBE_INQUIRY:
5829 case PROBE_FULL_INQUIRY:
5830 {
5831 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
5832 struct scsi_inquiry_data *inq_buf;
5833 u_int8_t periph_qual;
5834
5835 path->device->flags |= CAM_DEV_INQUIRY_DATA_VALID;
5836 inq_buf = &path->device->inq_data;
5837
5838 periph_qual = SID_QUAL(inq_buf);
5839
5840 switch(periph_qual) {
5841 case SID_QUAL_LU_CONNECTED:
5842 {
5843 u_int8_t len;
5844
5845 /*
5846 * We conservatively request only
5847 * SHORT_INQUIRY_LEN bytes of inquiry
5848 * information during our first try
5849 * at sending an INQUIRY. If the device
5850 * has more information to give,
5851 * perform a second request specifying
5852 * the amount of information the device
5853 * is willing to give.
5854 */
5855 len = inq_buf->additional_length
5856 + offsetof(struct scsi_inquiry_data,
5857 additional_length) + 1;
5858 if (softc->action == PROBE_INQUIRY
5859 && len > SHORT_INQUIRY_LENGTH) {
5860 softc->action = PROBE_FULL_INQUIRY;
5861 xpt_release_ccb(done_ccb);
5862 xpt_schedule(periph, priority);
5863 return;
5864 }
5865
5866 xpt_find_quirk(path->device);
5867
5868#ifdef CAM_NEW_TRAN_CODE
5869 xpt_devise_transport(path);
5870#endif /* CAM_NEW_TRAN_CODE */
5871 if ((inq_buf->flags & SID_CmdQue) != 0)
5872 softc->action = PROBE_MODE_SENSE;
5873 else
5874 softc->action = PROBE_SERIAL_NUM;
5875
5876 path->device->flags &= ~CAM_DEV_UNCONFIGURED;
5877
5878 xpt_release_ccb(done_ccb);
5879 xpt_schedule(periph, priority);
5880 return;
5881 }
5882 default:
5883 break;
5884 }
5885 } else if (cam_periph_error(done_ccb, 0,
5886 done_ccb->ccb_h.target_lun > 0
5887 ? SF_RETRY_UA|SF_QUIET_IR
5888 : SF_RETRY_UA,
5889 &softc->saved_ccb) == ERESTART) {
5890 return;
5891 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
5892 /* Don't wedge the queue */
5893 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
5894 /*run_queue*/TRUE);
5895 }
5896 /*
5897 * If we get to this point, we got an error status back
5898 * from the inquiry and the error status doesn't require
5899 * automatically retrying the command. Therefore, the
5900 * inquiry failed. If we had inquiry information before
5901 * for this device, but this latest inquiry command failed,
5902 * the device has probably gone away. If this device isn't
5903 * already marked unconfigured, notify the peripheral
5904 * drivers that this device is no more.
5905 */
5906 if ((path->device->flags & CAM_DEV_UNCONFIGURED) == 0)
5907 /* Send the async notification. */
5908 xpt_async(AC_LOST_DEVICE, path, NULL);
5909
5910 xpt_release_ccb(done_ccb);
5911 break;
5912 }
5913 case PROBE_MODE_SENSE:
5914 {
5915 struct ccb_scsiio *csio;
5916 struct scsi_mode_header_6 *mode_hdr;
5917
5918 csio = &done_ccb->csio;
5919 mode_hdr = (struct scsi_mode_header_6 *)csio->data_ptr;
5920 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
5921 struct scsi_control_page *page;
5922 u_int8_t *offset;
5923
5924 offset = ((u_int8_t *)&mode_hdr[1])
5925 + mode_hdr->blk_desc_len;
5926 page = (struct scsi_control_page *)offset;
5927 path->device->queue_flags = page->queue_flags;
5928 } else if (cam_periph_error(done_ccb, 0,
5929 SF_RETRY_UA|SF_NO_PRINT,
5930 &softc->saved_ccb) == ERESTART) {
5931 return;
5932 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
5933 /* Don't wedge the queue */
5934 xpt_release_devq(done_ccb->ccb_h.path,
5935 /*count*/1, /*run_queue*/TRUE);
5936 }
5937 xpt_release_ccb(done_ccb);
5938 free(mode_hdr, M_TEMP);
5939 softc->action = PROBE_SERIAL_NUM;
5940 xpt_schedule(periph, priority);
5941 return;
5942 }
5943 case PROBE_SERIAL_NUM:
5944 {
5945 struct ccb_scsiio *csio;
5946 struct scsi_vpd_unit_serial_number *serial_buf;
5947 u_int32_t priority;
5948 int changed;
5949 int have_serialnum;
5950
5951 changed = 1;
5952 have_serialnum = 0;
5953 csio = &done_ccb->csio;
5954 priority = done_ccb->ccb_h.pinfo.priority;
5955 serial_buf =
5956 (struct scsi_vpd_unit_serial_number *)csio->data_ptr;
5957
5958 /* Clean up from previous instance of this device */
5959 if (path->device->serial_num != NULL) {
| 5125 xpt_release_target(bus, target);
5126 } else
5127 splx(s);
5128}
5129
5130static u_int32_t
5131xpt_dev_ccbq_resize(struct cam_path *path, int newopenings)
5132{
5133 int s;
5134 int diff;
5135 int result;
5136 struct cam_ed *dev;
5137
5138 dev = path->device;
5139 s = splsoftcam();
5140
5141 diff = newopenings - (dev->ccbq.dev_active + dev->ccbq.dev_openings);
5142 result = cam_ccbq_resize(&dev->ccbq, newopenings);
5143 if (result == CAM_REQ_CMP && (diff < 0)) {
5144 dev->flags |= CAM_DEV_RESIZE_QUEUE_NEEDED;
5145 }
5146 if ((dev->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
5147 || (dev->inq_flags & SID_CmdQue) != 0)
5148 dev->tag_saved_openings = newopenings;
5149 /* Adjust the global limit */
5150 xpt_max_ccbs += diff;
5151 splx(s);
5152 return (result);
5153}
5154
5155static struct cam_eb *
5156xpt_find_bus(path_id_t path_id)
5157{
5158 struct cam_eb *bus;
5159
5160 for (bus = TAILQ_FIRST(&xpt_busses);
5161 bus != NULL;
5162 bus = TAILQ_NEXT(bus, links)) {
5163 if (bus->path_id == path_id) {
5164 bus->refcount++;
5165 break;
5166 }
5167 }
5168 return (bus);
5169}
5170
5171static struct cam_et *
5172xpt_find_target(struct cam_eb *bus, target_id_t target_id)
5173{
5174 struct cam_et *target;
5175
5176 for (target = TAILQ_FIRST(&bus->et_entries);
5177 target != NULL;
5178 target = TAILQ_NEXT(target, links)) {
5179 if (target->target_id == target_id) {
5180 target->refcount++;
5181 break;
5182 }
5183 }
5184 return (target);
5185}
5186
5187static struct cam_ed *
5188xpt_find_device(struct cam_et *target, lun_id_t lun_id)
5189{
5190 struct cam_ed *device;
5191
5192 for (device = TAILQ_FIRST(&target->ed_entries);
5193 device != NULL;
5194 device = TAILQ_NEXT(device, links)) {
5195 if (device->lun_id == lun_id) {
5196 device->refcount++;
5197 break;
5198 }
5199 }
5200 return (device);
5201}
5202
5203typedef struct {
5204 union ccb *request_ccb;
5205 struct ccb_pathinq *cpi;
5206 int pending_count;
5207} xpt_scan_bus_info;
5208
5209/*
5210 * To start a scan, request_ccb is an XPT_SCAN_BUS ccb.
5211 * As the scan progresses, xpt_scan_bus is used as the
5212 * callback on completion function.
5213 */
5214static void
5215xpt_scan_bus(struct cam_periph *periph, union ccb *request_ccb)
5216{
5217 CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE,
5218 ("xpt_scan_bus\n"));
5219 switch (request_ccb->ccb_h.func_code) {
5220 case XPT_SCAN_BUS:
5221 {
5222 xpt_scan_bus_info *scan_info;
5223 union ccb *work_ccb;
5224 struct cam_path *path;
5225 u_int i;
5226 u_int max_target;
5227 u_int initiator_id;
5228
5229 /* Find out the characteristics of the bus */
5230 work_ccb = xpt_alloc_ccb();
5231 xpt_setup_ccb(&work_ccb->ccb_h, request_ccb->ccb_h.path,
5232 request_ccb->ccb_h.pinfo.priority);
5233 work_ccb->ccb_h.func_code = XPT_PATH_INQ;
5234 xpt_action(work_ccb);
5235 if (work_ccb->ccb_h.status != CAM_REQ_CMP) {
5236 request_ccb->ccb_h.status = work_ccb->ccb_h.status;
5237 xpt_free_ccb(work_ccb);
5238 xpt_done(request_ccb);
5239 return;
5240 }
5241
5242 if ((work_ccb->cpi.hba_misc & PIM_NOINITIATOR) != 0) {
5243 /*
5244 * Can't scan the bus on an adapter that
5245 * cannot perform the initiator role.
5246 */
5247 request_ccb->ccb_h.status = CAM_REQ_CMP;
5248 xpt_free_ccb(work_ccb);
5249 xpt_done(request_ccb);
5250 return;
5251 }
5252
5253 /* Save some state for use while we probe for devices */
5254 scan_info = (xpt_scan_bus_info *)
5255 malloc(sizeof(xpt_scan_bus_info), M_TEMP, M_WAITOK);
5256 scan_info->request_ccb = request_ccb;
5257 scan_info->cpi = &work_ccb->cpi;
5258
5259 /* Cache on our stack so we can work asynchronously */
5260 max_target = scan_info->cpi->max_target;
5261 initiator_id = scan_info->cpi->initiator_id;
5262
5263 /*
5264 * Don't count the initiator if the
5265 * initiator is addressable.
5266 */
5267 scan_info->pending_count = max_target + 1;
5268 if (initiator_id <= max_target)
5269 scan_info->pending_count--;
5270
5271 for (i = 0; i <= max_target; i++) {
5272 cam_status status;
5273 if (i == initiator_id)
5274 continue;
5275
5276 status = xpt_create_path(&path, xpt_periph,
5277 request_ccb->ccb_h.path_id,
5278 i, 0);
5279 if (status != CAM_REQ_CMP) {
5280 printf("xpt_scan_bus: xpt_create_path failed"
5281 " with status %#x, bus scan halted\n",
5282 status);
5283 break;
5284 }
5285 work_ccb = xpt_alloc_ccb();
5286 xpt_setup_ccb(&work_ccb->ccb_h, path,
5287 request_ccb->ccb_h.pinfo.priority);
5288 work_ccb->ccb_h.func_code = XPT_SCAN_LUN;
5289 work_ccb->ccb_h.cbfcnp = xpt_scan_bus;
5290 work_ccb->ccb_h.ppriv_ptr0 = scan_info;
5291 work_ccb->crcn.flags = request_ccb->crcn.flags;
5292 xpt_action(work_ccb);
5293 }
5294 break;
5295 }
5296 case XPT_SCAN_LUN:
5297 {
5298 xpt_scan_bus_info *scan_info;
5299 path_id_t path_id;
5300 target_id_t target_id;
5301 lun_id_t lun_id;
5302
5303 /* Reuse the same CCB to query if a device was really found */
5304 scan_info = (xpt_scan_bus_info *)request_ccb->ccb_h.ppriv_ptr0;
5305 xpt_setup_ccb(&request_ccb->ccb_h, request_ccb->ccb_h.path,
5306 request_ccb->ccb_h.pinfo.priority);
5307 request_ccb->ccb_h.func_code = XPT_GDEV_TYPE;
5308
5309 path_id = request_ccb->ccb_h.path_id;
5310 target_id = request_ccb->ccb_h.target_id;
5311 lun_id = request_ccb->ccb_h.target_lun;
5312 xpt_action(request_ccb);
5313
5314 if (request_ccb->ccb_h.status != CAM_REQ_CMP) {
5315 struct cam_ed *device;
5316 struct cam_et *target;
5317 int s, phl;
5318
5319 /*
5320 * If we already probed lun 0 successfully, or
5321 * we have additional configured luns on this
5322 * target that might have "gone away", go onto
5323 * the next lun.
5324 */
5325 target = request_ccb->ccb_h.path->target;
5326 /*
5327 * We may touch devices that we don't
5328 * hold references too, so ensure they
5329 * don't disappear out from under us.
5330 * The target above is referenced by the
5331 * path in the request ccb.
5332 */
5333 phl = 0;
5334 s = splcam();
5335 device = TAILQ_FIRST(&target->ed_entries);
5336 if (device != NULL) {
5337 phl = CAN_SRCH_HI(device);
5338 if (device->lun_id == 0)
5339 device = TAILQ_NEXT(device, links);
5340 }
5341 splx(s);
5342 if ((lun_id != 0) || (device != NULL)) {
5343 if (lun_id < (CAM_SCSI2_MAXLUN-1) || phl)
5344 lun_id++;
5345 }
5346 } else {
5347 struct cam_ed *device;
5348
5349 device = request_ccb->ccb_h.path->device;
5350
5351 if ((device->quirk->quirks & CAM_QUIRK_NOLUNS) == 0) {
5352 /* Try the next lun */
5353 if (lun_id < (CAM_SCSI2_MAXLUN-1)
5354 || CAN_SRCH_HI(device))
5355 lun_id++;
5356 }
5357 }
5358
5359 xpt_free_path(request_ccb->ccb_h.path);
5360
5361 /* Check Bounds */
5362 if ((lun_id == request_ccb->ccb_h.target_lun)
5363 || lun_id > scan_info->cpi->max_lun) {
5364 /* We're done */
5365
5366 xpt_free_ccb(request_ccb);
5367 scan_info->pending_count--;
5368 if (scan_info->pending_count == 0) {
5369 xpt_free_ccb((union ccb *)scan_info->cpi);
5370 request_ccb = scan_info->request_ccb;
5371 free(scan_info, M_TEMP);
5372 request_ccb->ccb_h.status = CAM_REQ_CMP;
5373 xpt_done(request_ccb);
5374 }
5375 } else {
5376 /* Try the next device */
5377 struct cam_path *path;
5378 cam_status status;
5379
5380 status = xpt_create_path(&path, xpt_periph,
5381 path_id, target_id, lun_id);
5382 if (status != CAM_REQ_CMP) {
5383 printf("xpt_scan_bus: xpt_create_path failed "
5384 "with status %#x, halting LUN scan\n",
5385 status);
5386 xpt_free_ccb(request_ccb);
5387 scan_info->pending_count--;
5388 if (scan_info->pending_count == 0) {
5389 xpt_free_ccb(
5390 (union ccb *)scan_info->cpi);
5391 request_ccb = scan_info->request_ccb;
5392 free(scan_info, M_TEMP);
5393 request_ccb->ccb_h.status = CAM_REQ_CMP;
5394 xpt_done(request_ccb);
5395 }
5396 break;
5397 }
5398 xpt_setup_ccb(&request_ccb->ccb_h, path,
5399 request_ccb->ccb_h.pinfo.priority);
5400 request_ccb->ccb_h.func_code = XPT_SCAN_LUN;
5401 request_ccb->ccb_h.cbfcnp = xpt_scan_bus;
5402 request_ccb->ccb_h.ppriv_ptr0 = scan_info;
5403 request_ccb->crcn.flags =
5404 scan_info->request_ccb->crcn.flags;
5405 xpt_action(request_ccb);
5406 }
5407 break;
5408 }
5409 default:
5410 break;
5411 }
5412}
5413
5414typedef enum {
5415 PROBE_TUR,
5416 PROBE_INQUIRY,
5417 PROBE_FULL_INQUIRY,
5418 PROBE_MODE_SENSE,
5419 PROBE_SERIAL_NUM,
5420 PROBE_TUR_FOR_NEGOTIATION
5421} probe_action;
5422
5423typedef enum {
5424 PROBE_INQUIRY_CKSUM = 0x01,
5425 PROBE_SERIAL_CKSUM = 0x02,
5426 PROBE_NO_ANNOUNCE = 0x04
5427} probe_flags;
5428
5429typedef struct {
5430 TAILQ_HEAD(, ccb_hdr) request_ccbs;
5431 probe_action action;
5432 union ccb saved_ccb;
5433 probe_flags flags;
5434 MD5_CTX context;
5435 u_int8_t digest[16];
5436} probe_softc;
5437
5438static void
5439xpt_scan_lun(struct cam_periph *periph, struct cam_path *path,
5440 cam_flags flags, union ccb *request_ccb)
5441{
5442 struct ccb_pathinq cpi;
5443 cam_status status;
5444 struct cam_path *new_path;
5445 struct cam_periph *old_periph;
5446 int s;
5447
5448 CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE,
5449 ("xpt_scan_lun\n"));
5450
5451 xpt_setup_ccb(&cpi.ccb_h, path, /*priority*/1);
5452 cpi.ccb_h.func_code = XPT_PATH_INQ;
5453 xpt_action((union ccb *)&cpi);
5454
5455 if (cpi.ccb_h.status != CAM_REQ_CMP) {
5456 if (request_ccb != NULL) {
5457 request_ccb->ccb_h.status = cpi.ccb_h.status;
5458 xpt_done(request_ccb);
5459 }
5460 return;
5461 }
5462
5463 if ((cpi.hba_misc & PIM_NOINITIATOR) != 0) {
5464 /*
5465 * Can't scan the bus on an adapter that
5466 * cannot perform the initiator role.
5467 */
5468 if (request_ccb != NULL) {
5469 request_ccb->ccb_h.status = CAM_REQ_CMP;
5470 xpt_done(request_ccb);
5471 }
5472 return;
5473 }
5474
5475 if (request_ccb == NULL) {
5476 request_ccb = malloc(sizeof(union ccb), M_TEMP, M_NOWAIT);
5477 if (request_ccb == NULL) {
5478 xpt_print_path(path);
5479 printf("xpt_scan_lun: can't allocate CCB, can't "
5480 "continue\n");
5481 return;
5482 }
5483 new_path = malloc(sizeof(*new_path), M_TEMP, M_NOWAIT);
5484 if (new_path == NULL) {
5485 xpt_print_path(path);
5486 printf("xpt_scan_lun: can't allocate path, can't "
5487 "continue\n");
5488 free(request_ccb, M_TEMP);
5489 return;
5490 }
5491 status = xpt_compile_path(new_path, xpt_periph,
5492 path->bus->path_id,
5493 path->target->target_id,
5494 path->device->lun_id);
5495
5496 if (status != CAM_REQ_CMP) {
5497 xpt_print_path(path);
5498 printf("xpt_scan_lun: can't compile path, can't "
5499 "continue\n");
5500 free(request_ccb, M_TEMP);
5501 free(new_path, M_TEMP);
5502 return;
5503 }
5504 xpt_setup_ccb(&request_ccb->ccb_h, new_path, /*priority*/ 1);
5505 request_ccb->ccb_h.cbfcnp = xptscandone;
5506 request_ccb->ccb_h.func_code = XPT_SCAN_LUN;
5507 request_ccb->crcn.flags = flags;
5508 }
5509
5510 s = splsoftcam();
5511 if ((old_periph = cam_periph_find(path, "probe")) != NULL) {
5512 probe_softc *softc;
5513
5514 softc = (probe_softc *)old_periph->softc;
5515 TAILQ_INSERT_TAIL(&softc->request_ccbs, &request_ccb->ccb_h,
5516 periph_links.tqe);
5517 } else {
5518 status = cam_periph_alloc(proberegister, NULL, probecleanup,
5519 probestart, "probe",
5520 CAM_PERIPH_BIO,
5521 request_ccb->ccb_h.path, NULL, 0,
5522 request_ccb);
5523
5524 if (status != CAM_REQ_CMP) {
5525 xpt_print_path(path);
5526 printf("xpt_scan_lun: cam_alloc_periph returned an "
5527 "error, can't continue probe\n");
5528 request_ccb->ccb_h.status = status;
5529 xpt_done(request_ccb);
5530 }
5531 }
5532 splx(s);
5533}
5534
5535static void
5536xptscandone(struct cam_periph *periph, union ccb *done_ccb)
5537{
5538 xpt_release_path(done_ccb->ccb_h.path);
5539 free(done_ccb->ccb_h.path, M_TEMP);
5540 free(done_ccb, M_TEMP);
5541}
5542
5543static cam_status
5544proberegister(struct cam_periph *periph, void *arg)
5545{
5546 union ccb *request_ccb; /* CCB representing the probe request */
5547 probe_softc *softc;
5548
5549 request_ccb = (union ccb *)arg;
5550 if (periph == NULL) {
5551 printf("proberegister: periph was NULL!!\n");
5552 return(CAM_REQ_CMP_ERR);
5553 }
5554
5555 if (request_ccb == NULL) {
5556 printf("proberegister: no probe CCB, "
5557 "can't register device\n");
5558 return(CAM_REQ_CMP_ERR);
5559 }
5560
5561 softc = (probe_softc *)malloc(sizeof(*softc), M_TEMP, M_NOWAIT);
5562
5563 if (softc == NULL) {
5564 printf("proberegister: Unable to probe new device. "
5565 "Unable to allocate softc\n");
5566 return(CAM_REQ_CMP_ERR);
5567 }
5568 TAILQ_INIT(&softc->request_ccbs);
5569 TAILQ_INSERT_TAIL(&softc->request_ccbs, &request_ccb->ccb_h,
5570 periph_links.tqe);
5571 softc->flags = 0;
5572 periph->softc = softc;
5573 cam_periph_acquire(periph);
5574 /*
5575 * Ensure we've waited at least a bus settle
5576 * delay before attempting to probe the device.
5577 * For HBAs that don't do bus resets, this won't make a difference.
5578 */
5579 cam_periph_freeze_after_event(periph, &periph->path->bus->last_reset,
5580 scsi_delay);
5581 probeschedule(periph);
5582 return(CAM_REQ_CMP);
5583}
5584
5585static void
5586probeschedule(struct cam_periph *periph)
5587{
5588 struct ccb_pathinq cpi;
5589 union ccb *ccb;
5590 probe_softc *softc;
5591
5592 softc = (probe_softc *)periph->softc;
5593 ccb = (union ccb *)TAILQ_FIRST(&softc->request_ccbs);
5594
5595 xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1);
5596 cpi.ccb_h.func_code = XPT_PATH_INQ;
5597 xpt_action((union ccb *)&cpi);
5598
5599 /*
5600 * If a device has gone away and another device, or the same one,
5601 * is back in the same place, it should have a unit attention
5602 * condition pending. It will not report the unit attention in
5603 * response to an inquiry, which may leave invalid transfer
5604 * negotiations in effect. The TUR will reveal the unit attention
5605 * condition. Only send the TUR for lun 0, since some devices
5606 * will get confused by commands other than inquiry to non-existent
5607 * luns. If you think a device has gone away start your scan from
5608 * lun 0. This will insure that any bogus transfer settings are
5609 * invalidated.
5610 *
5611 * If we haven't seen the device before and the controller supports
5612 * some kind of transfer negotiation, negotiate with the first
5613 * sent command if no bus reset was performed at startup. This
5614 * ensures that the device is not confused by transfer negotiation
5615 * settings left over by loader or BIOS action.
5616 */
5617 if (((ccb->ccb_h.path->device->flags & CAM_DEV_UNCONFIGURED) == 0)
5618 && (ccb->ccb_h.target_lun == 0)) {
5619 softc->action = PROBE_TUR;
5620 } else if ((cpi.hba_inquiry & (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE)) != 0
5621 && (cpi.hba_misc & PIM_NOBUSRESET) != 0) {
5622 proberequestdefaultnegotiation(periph);
5623 softc->action = PROBE_INQUIRY;
5624 } else {
5625 softc->action = PROBE_INQUIRY;
5626 }
5627
5628 if (ccb->crcn.flags & CAM_EXPECT_INQ_CHANGE)
5629 softc->flags |= PROBE_NO_ANNOUNCE;
5630 else
5631 softc->flags &= ~PROBE_NO_ANNOUNCE;
5632
5633 xpt_schedule(periph, ccb->ccb_h.pinfo.priority);
5634}
5635
5636static void
5637probestart(struct cam_periph *periph, union ccb *start_ccb)
5638{
5639 /* Probe the device that our peripheral driver points to */
5640 struct ccb_scsiio *csio;
5641 probe_softc *softc;
5642
5643 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("probestart\n"));
5644
5645 softc = (probe_softc *)periph->softc;
5646 csio = &start_ccb->csio;
5647
5648 switch (softc->action) {
5649 case PROBE_TUR:
5650 case PROBE_TUR_FOR_NEGOTIATION:
5651 {
5652 scsi_test_unit_ready(csio,
5653 /*retries*/4,
5654 probedone,
5655 MSG_SIMPLE_Q_TAG,
5656 SSD_FULL_SIZE,
5657 /*timeout*/60000);
5658 break;
5659 }
5660 case PROBE_INQUIRY:
5661 case PROBE_FULL_INQUIRY:
5662 {
5663 u_int inquiry_len;
5664 struct scsi_inquiry_data *inq_buf;
5665
5666 inq_buf = &periph->path->device->inq_data;
5667 /*
5668 * If the device is currently configured, we calculate an
5669 * MD5 checksum of the inquiry data, and if the serial number
5670 * length is greater than 0, add the serial number data
5671 * into the checksum as well. Once the inquiry and the
5672 * serial number check finish, we attempt to figure out
5673 * whether we still have the same device.
5674 */
5675 if ((periph->path->device->flags & CAM_DEV_UNCONFIGURED) == 0) {
5676
5677 MD5Init(&softc->context);
5678 MD5Update(&softc->context, (unsigned char *)inq_buf,
5679 sizeof(struct scsi_inquiry_data));
5680 softc->flags |= PROBE_INQUIRY_CKSUM;
5681 if (periph->path->device->serial_num_len > 0) {
5682 MD5Update(&softc->context,
5683 periph->path->device->serial_num,
5684 periph->path->device->serial_num_len);
5685 softc->flags |= PROBE_SERIAL_CKSUM;
5686 }
5687 MD5Final(softc->digest, &softc->context);
5688 }
5689
5690 if (softc->action == PROBE_INQUIRY)
5691 inquiry_len = SHORT_INQUIRY_LENGTH;
5692 else
5693 inquiry_len = inq_buf->additional_length
5694 + offsetof(struct scsi_inquiry_data,
5695 additional_length) + 1;
5696
5697 /*
5698 * Some parallel SCSI devices fail to send an
5699 * ignore wide residue message when dealing with
5700 * odd length inquiry requests. Round up to be
5701 * safe.
5702 */
5703 inquiry_len = roundup2(inquiry_len, 2);
5704
5705 scsi_inquiry(csio,
5706 /*retries*/4,
5707 probedone,
5708 MSG_SIMPLE_Q_TAG,
5709 (u_int8_t *)inq_buf,
5710 inquiry_len,
5711 /*evpd*/FALSE,
5712 /*page_code*/0,
5713 SSD_MIN_SIZE,
5714 /*timeout*/60 * 1000);
5715 break;
5716 }
5717 case PROBE_MODE_SENSE:
5718 {
5719 void *mode_buf;
5720 int mode_buf_len;
5721
5722 mode_buf_len = sizeof(struct scsi_mode_header_6)
5723 + sizeof(struct scsi_mode_blk_desc)
5724 + sizeof(struct scsi_control_page);
5725 mode_buf = malloc(mode_buf_len, M_TEMP, M_NOWAIT);
5726 if (mode_buf != NULL) {
5727 scsi_mode_sense(csio,
5728 /*retries*/4,
5729 probedone,
5730 MSG_SIMPLE_Q_TAG,
5731 /*dbd*/FALSE,
5732 SMS_PAGE_CTRL_CURRENT,
5733 SMS_CONTROL_MODE_PAGE,
5734 mode_buf,
5735 mode_buf_len,
5736 SSD_FULL_SIZE,
5737 /*timeout*/60000);
5738 break;
5739 }
5740 xpt_print_path(periph->path);
5741 printf("Unable to mode sense control page - malloc failure\n");
5742 softc->action = PROBE_SERIAL_NUM;
5743 }
5744 /* FALLTHROUGH */
5745 case PROBE_SERIAL_NUM:
5746 {
5747 struct scsi_vpd_unit_serial_number *serial_buf;
5748 struct cam_ed* device;
5749
5750 serial_buf = NULL;
5751 device = periph->path->device;
5752 device->serial_num = NULL;
5753 device->serial_num_len = 0;
5754
5755 if ((device->quirk->quirks & CAM_QUIRK_NOSERIAL) == 0)
5756 serial_buf = (struct scsi_vpd_unit_serial_number *)
5757 malloc(sizeof(*serial_buf), M_TEMP,
5758 M_NOWAIT | M_ZERO);
5759
5760 if (serial_buf != NULL) {
5761 scsi_inquiry(csio,
5762 /*retries*/4,
5763 probedone,
5764 MSG_SIMPLE_Q_TAG,
5765 (u_int8_t *)serial_buf,
5766 sizeof(*serial_buf),
5767 /*evpd*/TRUE,
5768 SVPD_UNIT_SERIAL_NUMBER,
5769 SSD_MIN_SIZE,
5770 /*timeout*/60 * 1000);
5771 break;
5772 }
5773 /*
5774 * We'll have to do without, let our probedone
5775 * routine finish up for us.
5776 */
5777 start_ccb->csio.data_ptr = NULL;
5778 probedone(periph, start_ccb);
5779 return;
5780 }
5781 }
5782 xpt_action(start_ccb);
5783}
5784
5785static void
5786proberequestdefaultnegotiation(struct cam_periph *periph)
5787{
5788 struct ccb_trans_settings cts;
5789
5790 xpt_setup_ccb(&cts.ccb_h, periph->path, /*priority*/1);
5791 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
5792#ifdef CAM_NEW_TRAN_CODE
5793 cts.type = CTS_TYPE_USER_SETTINGS;
5794#else /* CAM_NEW_TRAN_CODE */
5795 cts.flags = CCB_TRANS_USER_SETTINGS;
5796#endif /* CAM_NEW_TRAN_CODE */
5797 xpt_action((union ccb *)&cts);
5798 cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
5799#ifdef CAM_NEW_TRAN_CODE
5800 cts.type = CTS_TYPE_CURRENT_SETTINGS;
5801#else /* CAM_NEW_TRAN_CODE */
5802 cts.flags &= ~CCB_TRANS_USER_SETTINGS;
5803 cts.flags |= CCB_TRANS_CURRENT_SETTINGS;
5804#endif /* CAM_NEW_TRAN_CODE */
5805 xpt_action((union ccb *)&cts);
5806}
5807
5808static void
5809probedone(struct cam_periph *periph, union ccb *done_ccb)
5810{
5811 probe_softc *softc;
5812 struct cam_path *path;
5813 u_int32_t priority;
5814
5815 CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("probedone\n"));
5816
5817 softc = (probe_softc *)periph->softc;
5818 path = done_ccb->ccb_h.path;
5819 priority = done_ccb->ccb_h.pinfo.priority;
5820
5821 switch (softc->action) {
5822 case PROBE_TUR:
5823 {
5824 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
5825
5826 if (cam_periph_error(done_ccb, 0,
5827 SF_NO_PRINT, NULL) == ERESTART)
5828 return;
5829 else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
5830 /* Don't wedge the queue */
5831 xpt_release_devq(done_ccb->ccb_h.path,
5832 /*count*/1,
5833 /*run_queue*/TRUE);
5834 }
5835 softc->action = PROBE_INQUIRY;
5836 xpt_release_ccb(done_ccb);
5837 xpt_schedule(periph, priority);
5838 return;
5839 }
5840 case PROBE_INQUIRY:
5841 case PROBE_FULL_INQUIRY:
5842 {
5843 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
5844 struct scsi_inquiry_data *inq_buf;
5845 u_int8_t periph_qual;
5846
5847 path->device->flags |= CAM_DEV_INQUIRY_DATA_VALID;
5848 inq_buf = &path->device->inq_data;
5849
5850 periph_qual = SID_QUAL(inq_buf);
5851
5852 switch(periph_qual) {
5853 case SID_QUAL_LU_CONNECTED:
5854 {
5855 u_int8_t len;
5856
5857 /*
5858 * We conservatively request only
5859 * SHORT_INQUIRY_LEN bytes of inquiry
5860 * information during our first try
5861 * at sending an INQUIRY. If the device
5862 * has more information to give,
5863 * perform a second request specifying
5864 * the amount of information the device
5865 * is willing to give.
5866 */
5867 len = inq_buf->additional_length
5868 + offsetof(struct scsi_inquiry_data,
5869 additional_length) + 1;
5870 if (softc->action == PROBE_INQUIRY
5871 && len > SHORT_INQUIRY_LENGTH) {
5872 softc->action = PROBE_FULL_INQUIRY;
5873 xpt_release_ccb(done_ccb);
5874 xpt_schedule(periph, priority);
5875 return;
5876 }
5877
5878 xpt_find_quirk(path->device);
5879
5880#ifdef CAM_NEW_TRAN_CODE
5881 xpt_devise_transport(path);
5882#endif /* CAM_NEW_TRAN_CODE */
5883 if ((inq_buf->flags & SID_CmdQue) != 0)
5884 softc->action = PROBE_MODE_SENSE;
5885 else
5886 softc->action = PROBE_SERIAL_NUM;
5887
5888 path->device->flags &= ~CAM_DEV_UNCONFIGURED;
5889
5890 xpt_release_ccb(done_ccb);
5891 xpt_schedule(periph, priority);
5892 return;
5893 }
5894 default:
5895 break;
5896 }
5897 } else if (cam_periph_error(done_ccb, 0,
5898 done_ccb->ccb_h.target_lun > 0
5899 ? SF_RETRY_UA|SF_QUIET_IR
5900 : SF_RETRY_UA,
5901 &softc->saved_ccb) == ERESTART) {
5902 return;
5903 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
5904 /* Don't wedge the queue */
5905 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
5906 /*run_queue*/TRUE);
5907 }
5908 /*
5909 * If we get to this point, we got an error status back
5910 * from the inquiry and the error status doesn't require
5911 * automatically retrying the command. Therefore, the
5912 * inquiry failed. If we had inquiry information before
5913 * for this device, but this latest inquiry command failed,
5914 * the device has probably gone away. If this device isn't
5915 * already marked unconfigured, notify the peripheral
5916 * drivers that this device is no more.
5917 */
5918 if ((path->device->flags & CAM_DEV_UNCONFIGURED) == 0)
5919 /* Send the async notification. */
5920 xpt_async(AC_LOST_DEVICE, path, NULL);
5921
5922 xpt_release_ccb(done_ccb);
5923 break;
5924 }
5925 case PROBE_MODE_SENSE:
5926 {
5927 struct ccb_scsiio *csio;
5928 struct scsi_mode_header_6 *mode_hdr;
5929
5930 csio = &done_ccb->csio;
5931 mode_hdr = (struct scsi_mode_header_6 *)csio->data_ptr;
5932 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
5933 struct scsi_control_page *page;
5934 u_int8_t *offset;
5935
5936 offset = ((u_int8_t *)&mode_hdr[1])
5937 + mode_hdr->blk_desc_len;
5938 page = (struct scsi_control_page *)offset;
5939 path->device->queue_flags = page->queue_flags;
5940 } else if (cam_periph_error(done_ccb, 0,
5941 SF_RETRY_UA|SF_NO_PRINT,
5942 &softc->saved_ccb) == ERESTART) {
5943 return;
5944 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
5945 /* Don't wedge the queue */
5946 xpt_release_devq(done_ccb->ccb_h.path,
5947 /*count*/1, /*run_queue*/TRUE);
5948 }
5949 xpt_release_ccb(done_ccb);
5950 free(mode_hdr, M_TEMP);
5951 softc->action = PROBE_SERIAL_NUM;
5952 xpt_schedule(periph, priority);
5953 return;
5954 }
5955 case PROBE_SERIAL_NUM:
5956 {
5957 struct ccb_scsiio *csio;
5958 struct scsi_vpd_unit_serial_number *serial_buf;
5959 u_int32_t priority;
5960 int changed;
5961 int have_serialnum;
5962
5963 changed = 1;
5964 have_serialnum = 0;
5965 csio = &done_ccb->csio;
5966 priority = done_ccb->ccb_h.pinfo.priority;
5967 serial_buf =
5968 (struct scsi_vpd_unit_serial_number *)csio->data_ptr;
5969
5970 /* Clean up from previous instance of this device */
5971 if (path->device->serial_num != NULL) {
|