FreeBSD/Linux Kernel Cross Reference
sys/cam/cam_xpt.c
1 /*-
2 * Implementation of the Common Access Method Transport (XPT) layer.
3 *
4 * Copyright (c) 1997, 1998, 1999 Justin T. Gibbs.
5 * Copyright (c) 1997, 1998, 1999 Kenneth D. Merry.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions, and the following disclaimer,
13 * without modification, immediately at the beginning of the file.
14 * 2. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
21 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD: releng/6.0/sys/cam/cam_xpt.c 150267 2005-09-18 02:29:27Z mjacob $");
32
33 #include <sys/param.h>
34 #include <sys/bus.h>
35 #include <sys/systm.h>
36 #include <sys/types.h>
37 #include <sys/malloc.h>
38 #include <sys/kernel.h>
39 #include <sys/time.h>
40 #include <sys/conf.h>
41 #include <sys/fcntl.h>
42 #include <sys/md5.h>
43 #include <sys/interrupt.h>
44 #include <sys/sbuf.h>
45
46 #include <sys/lock.h>
47 #include <sys/mutex.h>
48 #include <sys/sysctl.h>
49
50 #ifdef PC98
51 #include <pc98/pc98/pc98_machdep.h> /* geometry translation */
52 #endif
53
54 #include <cam/cam.h>
55 #include <cam/cam_ccb.h>
56 #include <cam/cam_periph.h>
57 #include <cam/cam_sim.h>
58 #include <cam/cam_xpt.h>
59 #include <cam/cam_xpt_sim.h>
60 #include <cam/cam_xpt_periph.h>
61 #include <cam/cam_debug.h>
62
63 #include <cam/scsi/scsi_all.h>
64 #include <cam/scsi/scsi_message.h>
65 #include <cam/scsi/scsi_pass.h>
66 #include "opt_cam.h"
67
68 /* Datastructures internal to the xpt layer */
69 MALLOC_DEFINE(M_CAMXPT, "CAM XPT", "CAM XPT buffers");
70
71 /*
72 * Definition of an async handler callback block. These are used to add
73 * SIMs and peripherals to the async callback lists.
74 */
75 struct async_node {
76 SLIST_ENTRY(async_node) links;
77 u_int32_t event_enable; /* Async Event enables */
78 void (*callback)(void *arg, u_int32_t code,
79 struct cam_path *path, void *args);
80 void *callback_arg;
81 };
82
83 SLIST_HEAD(async_list, async_node);
84 SLIST_HEAD(periph_list, cam_periph);
85 static STAILQ_HEAD(highpowerlist, ccb_hdr) highpowerq;
86
87 /*
88 * This is the maximum number of high powered commands (e.g. start unit)
89 * that can be outstanding at a particular time.
90 */
91 #ifndef CAM_MAX_HIGHPOWER
92 #define CAM_MAX_HIGHPOWER 4
93 #endif
94
95 /* number of high powered commands that can go through right now */
96 static int num_highpower = CAM_MAX_HIGHPOWER;
97
98 /*
99 * Structure for queueing a device in a run queue.
100 * There is one run queue for allocating new ccbs,
101 * and another for sending ccbs to the controller.
102 */
103 struct cam_ed_qinfo {
104 cam_pinfo pinfo;
105 struct cam_ed *device;
106 };
107
108 /*
109 * The CAM EDT (Existing Device Table) contains the device information for
110 * all devices for all busses in the system. The table contains a
111 * cam_ed structure for each device on the bus.
112 */
113 struct cam_ed {
114 TAILQ_ENTRY(cam_ed) links;
115 struct cam_ed_qinfo alloc_ccb_entry;
116 struct cam_ed_qinfo send_ccb_entry;
117 struct cam_et *target;
118 lun_id_t lun_id;
119 struct camq drvq; /*
120 * Queue of type drivers wanting to do
121 * work on this device.
122 */
123 struct cam_ccbq ccbq; /* Queue of pending ccbs */
124 struct async_list asyncs; /* Async callback info for this B/T/L */
125 struct periph_list periphs; /* All attached devices */
126 u_int generation; /* Generation number */
127 struct cam_periph *owner; /* Peripheral driver's ownership tag */
128 struct xpt_quirk_entry *quirk; /* Oddities about this device */
129 /* Storage for the inquiry data */
130 #ifdef CAM_NEW_TRAN_CODE
131 cam_proto protocol;
132 u_int protocol_version;
133 cam_xport transport;
134 u_int transport_version;
135 #endif /* CAM_NEW_TRAN_CODE */
136 struct scsi_inquiry_data inq_data;
137 u_int8_t inq_flags; /*
138 * Current settings for inquiry flags.
139 * This allows us to override settings
140 * like disconnection and tagged
141 * queuing for a device.
142 */
143 u_int8_t queue_flags; /* Queue flags from the control page */
144 u_int8_t serial_num_len;
145 u_int8_t *serial_num;
146 u_int32_t qfrozen_cnt;
147 u_int32_t flags;
148 #define CAM_DEV_UNCONFIGURED 0x01
149 #define CAM_DEV_REL_TIMEOUT_PENDING 0x02
150 #define CAM_DEV_REL_ON_COMPLETE 0x04
151 #define CAM_DEV_REL_ON_QUEUE_EMPTY 0x08
152 #define CAM_DEV_RESIZE_QUEUE_NEEDED 0x10
153 #define CAM_DEV_TAG_AFTER_COUNT 0x20
154 #define CAM_DEV_INQUIRY_DATA_VALID 0x40
155 u_int32_t tag_delay_count;
156 #define CAM_TAG_DELAY_COUNT 5
157 u_int32_t tag_saved_openings;
158 u_int32_t refcount;
159 struct callout_handle c_handle;
160 };
161
162 /*
163 * Each target is represented by an ET (Existing Target). These
164 * entries are created when a target is successfully probed with an
165 * identify, and removed when a device fails to respond after a number
166 * of retries, or a bus rescan finds the device missing.
167 */
168 struct cam_et {
169 TAILQ_HEAD(, cam_ed) ed_entries;
170 TAILQ_ENTRY(cam_et) links;
171 struct cam_eb *bus;
172 target_id_t target_id;
173 u_int32_t refcount;
174 u_int generation;
175 struct timeval last_reset;
176 };
177
178 /*
179 * Each bus is represented by an EB (Existing Bus). These entries
180 * are created by calls to xpt_bus_register and deleted by calls to
181 * xpt_bus_deregister.
182 */
183 struct cam_eb {
184 TAILQ_HEAD(, cam_et) et_entries;
185 TAILQ_ENTRY(cam_eb) links;
186 path_id_t path_id;
187 struct cam_sim *sim;
188 struct timeval last_reset;
189 u_int32_t flags;
190 #define CAM_EB_RUNQ_SCHEDULED 0x01
191 u_int32_t refcount;
192 u_int generation;
193 };
194
195 struct cam_path {
196 struct cam_periph *periph;
197 struct cam_eb *bus;
198 struct cam_et *target;
199 struct cam_ed *device;
200 };
201
202 struct xpt_quirk_entry {
203 struct scsi_inquiry_pattern inq_pat;
204 u_int8_t quirks;
205 #define CAM_QUIRK_NOLUNS 0x01
206 #define CAM_QUIRK_NOSERIAL 0x02
207 #define CAM_QUIRK_HILUNS 0x04
208 #define CAM_QUIRK_NOHILUNS 0x08
209 u_int mintags;
210 u_int maxtags;
211 };
212
213 static int cam_srch_hi = 0;
214 TUNABLE_INT("kern.cam.cam_srch_hi", &cam_srch_hi);
215 static int sysctl_cam_search_luns(SYSCTL_HANDLER_ARGS);
216 SYSCTL_PROC(_kern_cam, OID_AUTO, cam_srch_hi, CTLTYPE_INT|CTLFLAG_RW, 0, 0,
217 sysctl_cam_search_luns, "I",
218 "allow search above LUN 7 for SCSI3 and greater devices");
219
220 #define CAM_SCSI2_MAXLUN 8
221 /*
222 * If we're not quirked to search <= the first 8 luns
223 * and we are either quirked to search above lun 8,
224 * or we're > SCSI-2 and we've enabled hilun searching,
225 * or we're > SCSI-2 and the last lun was a success,
226 * we can look for luns above lun 8.
227 */
228 #define CAN_SRCH_HI_SPARSE(dv) \
229 (((dv->quirk->quirks & CAM_QUIRK_NOHILUNS) == 0) \
230 && ((dv->quirk->quirks & CAM_QUIRK_HILUNS) \
231 || (SID_ANSI_REV(&dv->inq_data) > SCSI_REV_2 && cam_srch_hi)))
232
233 #define CAN_SRCH_HI_DENSE(dv) \
234 (((dv->quirk->quirks & CAM_QUIRK_NOHILUNS) == 0) \
235 && ((dv->quirk->quirks & CAM_QUIRK_HILUNS) \
236 || (SID_ANSI_REV(&dv->inq_data) > SCSI_REV_2)))
237
238 typedef enum {
239 XPT_FLAG_OPEN = 0x01
240 } xpt_flags;
241
242 struct xpt_softc {
243 xpt_flags flags;
244 u_int32_t generation;
245 };
246
247 static const char quantum[] = "QUANTUM";
248 static const char sony[] = "SONY";
249 static const char west_digital[] = "WDIGTL";
250 static const char samsung[] = "SAMSUNG";
251 static const char seagate[] = "SEAGATE";
252 static const char microp[] = "MICROP";
253
254 static struct xpt_quirk_entry xpt_quirk_table[] =
255 {
256 {
257 /* Reports QUEUE FULL for temporary resource shortages */
258 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP39100*", "*" },
259 /*quirks*/0, /*mintags*/24, /*maxtags*/32
260 },
261 {
262 /* Reports QUEUE FULL for temporary resource shortages */
263 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP34550*", "*" },
264 /*quirks*/0, /*mintags*/24, /*maxtags*/32
265 },
266 {
267 /* Reports QUEUE FULL for temporary resource shortages */
268 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP32275*", "*" },
269 /*quirks*/0, /*mintags*/24, /*maxtags*/32
270 },
271 {
272 /* Broken tagged queuing drive */
273 { T_DIRECT, SIP_MEDIA_FIXED, microp, "4421-07*", "*" },
274 /*quirks*/0, /*mintags*/0, /*maxtags*/
275 },
276 {
277 /* Broken tagged queuing drive */
278 { T_DIRECT, SIP_MEDIA_FIXED, "HP", "C372*", "*" },
279 /*quirks*/0, /*mintags*/0, /*maxtags*/
280 },
281 {
282 /* Broken tagged queuing drive */
283 { T_DIRECT, SIP_MEDIA_FIXED, microp, "3391*", "x43h" },
284 /*quirks*/0, /*mintags*/0, /*maxtags*/
285 },
286 {
287 /*
288 * Unfortunately, the Quantum Atlas III has the same
289 * problem as the Atlas II drives above.
290 * Reported by: "Johan Granlund" <johan@granlund.nu>
291 *
292 * For future reference, the drive with the problem was:
293 * QUANTUM QM39100TD-SW N1B0
294 *
295 * It's possible that Quantum will fix the problem in later
296 * firmware revisions. If that happens, the quirk entry
297 * will need to be made specific to the firmware revisions
298 * with the problem.
299 *
300 */
301 /* Reports QUEUE FULL for temporary resource shortages */
302 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "QM39100*", "*" },
303 /*quirks*/0, /*mintags*/24, /*maxtags*/32
304 },
305 {
306 /*
307 * 18 Gig Atlas III, same problem as the 9G version.
308 * Reported by: Andre Albsmeier
309 * <andre.albsmeier@mchp.siemens.de>
310 *
311 * For future reference, the drive with the problem was:
312 * QUANTUM QM318000TD-S N491
313 */
314 /* Reports QUEUE FULL for temporary resource shortages */
315 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "QM318000*", "*" },
316 /*quirks*/0, /*mintags*/24, /*maxtags*/32
317 },
318 {
319 /*
320 * Broken tagged queuing drive
321 * Reported by: Bret Ford <bford@uop.cs.uop.edu>
322 * and: Martin Renters <martin@tdc.on.ca>
323 */
324 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST410800*", "71*" },
325 /*quirks*/0, /*mintags*/0, /*maxtags*/
326 },
327 /*
328 * The Seagate Medalist Pro drives have very poor write
329 * performance with anything more than 2 tags.
330 *
331 * Reported by: Paul van der Zwan <paulz@trantor.xs4all.nl>
332 * Drive: <SEAGATE ST36530N 1444>
333 *
334 * Reported by: Jeremy Lea <reg@shale.csir.co.za>
335 * Drive: <SEAGATE ST34520W 1281>
336 *
337 * No one has actually reported that the 9G version
338 * (ST39140*) of the Medalist Pro has the same problem, but
339 * we're assuming that it does because the 4G and 6.5G
340 * versions of the drive are broken.
341 */
342 {
343 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST34520*", "*"},
344 /*quirks*/0, /*mintags*/2, /*maxtags*/2
345 },
346 {
347 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST36530*", "*"},
348 /*quirks*/0, /*mintags*/2, /*maxtags*/2
349 },
350 {
351 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST39140*", "*"},
352 /*quirks*/0, /*mintags*/2, /*maxtags*/2
353 },
354 {
355 /*
356 * Slow when tagged queueing is enabled. Write performance
357 * steadily drops off with more and more concurrent
358 * transactions. Best sequential write performance with
359 * tagged queueing turned off and write caching turned on.
360 *
361 * PR: kern/10398
362 * Submitted by: Hideaki Okada <hokada@isl.melco.co.jp>
363 * Drive: DCAS-34330 w/ "S65A" firmware.
364 *
365 * The drive with the problem had the "S65A" firmware
366 * revision, and has also been reported (by Stephen J.
367 * Roznowski <sjr@home.net>) for a drive with the "S61A"
368 * firmware revision.
369 *
370 * Although no one has reported problems with the 2 gig
371 * version of the DCAS drive, the assumption is that it
372 * has the same problems as the 4 gig version. Therefore
373 * this quirk entries disables tagged queueing for all
374 * DCAS drives.
375 */
376 { T_DIRECT, SIP_MEDIA_FIXED, "IBM", "DCAS*", "*" },
377 /*quirks*/0, /*mintags*/0, /*maxtags*/
378 },
379 {
380 /* Broken tagged queuing drive */
381 { T_DIRECT, SIP_MEDIA_REMOVABLE, "iomega", "jaz*", "*" },
382 /*quirks*/0, /*mintags*/0, /*maxtags*/
383 },
384 {
385 /* Broken tagged queuing drive */
386 { T_DIRECT, SIP_MEDIA_FIXED, "CONNER", "CFP2107*", "*" },
387 /*quirks*/0, /*mintags*/0, /*maxtags*/
388 },
389 {
390 /*
391 * Broken tagged queuing drive.
392 * Submitted by:
393 * NAKAJI Hiroyuki <nakaji@zeisei.dpri.kyoto-u.ac.jp>
394 * in PR kern/9535
395 */
396 { T_DIRECT, SIP_MEDIA_FIXED, samsung, "WN34324U*", "*" },
397 /*quirks*/0, /*mintags*/0, /*maxtags*/
398 },
399 {
400 /*
401 * Slow when tagged queueing is enabled. (1.5MB/sec versus
402 * 8MB/sec.)
403 * Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
404 * Best performance with these drives is achieved with
405 * tagged queueing turned off, and write caching turned on.
406 */
407 { T_DIRECT, SIP_MEDIA_FIXED, west_digital, "WDE*", "*" },
408 /*quirks*/0, /*mintags*/0, /*maxtags*/
409 },
410 {
411 /*
412 * Slow when tagged queueing is enabled. (1.5MB/sec versus
413 * 8MB/sec.)
414 * Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
415 * Best performance with these drives is achieved with
416 * tagged queueing turned off, and write caching turned on.
417 */
418 { T_DIRECT, SIP_MEDIA_FIXED, west_digital, "ENTERPRISE", "*" },
419 /*quirks*/0, /*mintags*/0, /*maxtags*/
420 },
421 {
422 /*
423 * Doesn't handle queue full condition correctly,
424 * so we need to limit maxtags to what the device
425 * can handle instead of determining this automatically.
426 */
427 { T_DIRECT, SIP_MEDIA_FIXED, samsung, "WN321010S*", "*" },
428 /*quirks*/0, /*mintags*/2, /*maxtags*/32
429 },
430 {
431 /* Really only one LUN */
432 { T_ENCLOSURE, SIP_MEDIA_FIXED, "SUN", "SENA", "*" },
433 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/
434 },
435 {
436 /* I can't believe we need a quirk for DPT volumes. */
437 { T_ANY, SIP_MEDIA_FIXED|SIP_MEDIA_REMOVABLE, "DPT", "*", "*" },
438 CAM_QUIRK_NOSERIAL|CAM_QUIRK_NOLUNS,
439 /*mintags*/0, /*maxtags*/255
440 },
441 {
442 /*
443 * Many Sony CDROM drives don't like multi-LUN probing.
444 */
445 { T_CDROM, SIP_MEDIA_REMOVABLE, sony, "CD-ROM CDU*", "*" },
446 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/
447 },
448 {
449 /*
450 * This drive doesn't like multiple LUN probing.
451 * Submitted by: Parag Patel <parag@cgt.com>
452 */
453 { T_WORM, SIP_MEDIA_REMOVABLE, sony, "CD-R CDU9*", "*" },
454 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/
455 },
456 {
457 { T_WORM, SIP_MEDIA_REMOVABLE, "YAMAHA", "CDR100*", "*" },
458 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/
459 },
460 {
461 /*
462 * The 8200 doesn't like multi-lun probing, and probably
463 * don't like serial number requests either.
464 */
465 {
466 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "EXABYTE",
467 "EXB-8200*", "*"
468 },
469 CAM_QUIRK_NOSERIAL|CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/
470 },
471 {
472 /*
473 * Let's try the same as above, but for a drive that says
474 * it's an IPL-6860 but is actually an EXB 8200.
475 */
476 {
477 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "EXABYTE",
478 "IPL-6860*", "*"
479 },
480 CAM_QUIRK_NOSERIAL|CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/
481 },
482 {
483 /*
484 * These Hitachi drives don't like multi-lun probing.
485 * The PR submitter has a DK319H, but says that the Linux
486 * kernel has a similar work-around for the DK312 and DK314,
487 * so all DK31* drives are quirked here.
488 * PR: misc/18793
489 * Submitted by: Paul Haddad <paul@pth.com>
490 */
491 { T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "DK31*", "*" },
492 CAM_QUIRK_NOLUNS, /*mintags*/2, /*maxtags*/255
493 },
494 {
495 /*
496 * The Hitachi CJ series with J8A8 firmware apparantly has
497 * problems with tagged commands.
498 * PR: 23536
499 * Reported by: amagai@nue.org
500 */
501 { T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "DK32CJ*", "J8A8" },
502 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/
503 },
504 {
505 /*
506 * These are the large storage arrays.
507 * Submitted by: William Carrel <william.carrel@infospace.com>
508 */
509 { T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "OPEN*", "*" },
510 CAM_QUIRK_HILUNS, 2, 1024
511 },
512 {
513 /*
514 * This old revision of the TDC3600 is also SCSI-1, and
515 * hangs upon serial number probing.
516 */
517 {
518 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
519 " TDC 3600", "U07:"
520 },
521 CAM_QUIRK_NOSERIAL, /*mintags*/0, /*maxtags*/
522 },
523 {
524 /*
525 * Maxtor Personal Storage 3000XT (Firewire)
526 * hangs upon serial number probing.
527 */
528 {
529 T_DIRECT, SIP_MEDIA_FIXED, "Maxtor",
530 "1394 storage", "*"
531 },
532 CAM_QUIRK_NOSERIAL, /*mintags*/0, /*maxtags*/
533 },
534 {
535 /*
536 * Would repond to all LUNs if asked for.
537 */
538 {
539 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "CALIPER",
540 "CP150", "*"
541 },
542 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/
543 },
544 {
545 /*
546 * Would repond to all LUNs if asked for.
547 */
548 {
549 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY",
550 "96X2*", "*"
551 },
552 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/
553 },
554 {
555 /* Submitted by: Matthew Dodd <winter@jurai.net> */
556 { T_PROCESSOR, SIP_MEDIA_FIXED, "Cabletrn", "EA41*", "*" },
557 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/
558 },
559 {
560 /* Submitted by: Matthew Dodd <winter@jurai.net> */
561 { T_PROCESSOR, SIP_MEDIA_FIXED, "CABLETRN", "EA41*", "*" },
562 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/
563 },
564 {
565 /* TeraSolutions special settings for TRC-22 RAID */
566 { T_DIRECT, SIP_MEDIA_FIXED, "TERASOLU", "TRC-22", "*" },
567 /*quirks*/0, /*mintags*/55, /*maxtags*/255
568 },
569 {
570 /* Veritas Storage Appliance */
571 { T_DIRECT, SIP_MEDIA_FIXED, "VERITAS", "*", "*" },
572 CAM_QUIRK_HILUNS, /*mintags*/2, /*maxtags*/1024
573 },
574 {
575 /*
576 * Would respond to all LUNs. Device type and removable
577 * flag are jumper-selectable.
578 */
579 { T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED, "MaxOptix",
580 "Tahiti 1", "*"
581 },
582 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/
583 },
584 {
585 /* EasyRAID E5A aka. areca ARC-6010 */
586 { T_DIRECT, SIP_MEDIA_FIXED, "easyRAID", "*", "*" },
587 CAM_QUIRK_NOHILUNS, /*mintags*/2, /*maxtags*/255
588 },
589 {
590 /* Default tagged queuing parameters for all devices */
591 {
592 T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED,
593 /*vendor*/"*", /*product*/"*", /*revision*/"*"
594 },
595 /*quirks*/0, /*mintags*/2, /*maxtags*/255
596 },
597 };
598
599 static const int xpt_quirk_table_size =
600 sizeof(xpt_quirk_table) / sizeof(*xpt_quirk_table);
601
602 typedef enum {
603 DM_RET_COPY = 0x01,
604 DM_RET_FLAG_MASK = 0x0f,
605 DM_RET_NONE = 0x00,
606 DM_RET_STOP = 0x10,
607 DM_RET_DESCEND = 0x20,
608 DM_RET_ERROR = 0x30,
609 DM_RET_ACTION_MASK = 0xf0
610 } dev_match_ret;
611
612 typedef enum {
613 XPT_DEPTH_BUS,
614 XPT_DEPTH_TARGET,
615 XPT_DEPTH_DEVICE,
616 XPT_DEPTH_PERIPH
617 } xpt_traverse_depth;
618
619 struct xpt_traverse_config {
620 xpt_traverse_depth depth;
621 void *tr_func;
622 void *tr_arg;
623 };
624
625 typedef int xpt_busfunc_t (struct cam_eb *bus, void *arg);
626 typedef int xpt_targetfunc_t (struct cam_et *target, void *arg);
627 typedef int xpt_devicefunc_t (struct cam_ed *device, void *arg);
628 typedef int xpt_periphfunc_t (struct cam_periph *periph, void *arg);
629 typedef int xpt_pdrvfunc_t (struct periph_driver **pdrv, void *arg);
630
631 /* Transport layer configuration information */
632 static struct xpt_softc xsoftc;
633
634 /* Queues for our software interrupt handler */
635 typedef TAILQ_HEAD(cam_isrq, ccb_hdr) cam_isrq_t;
636 static cam_isrq_t cam_bioq;
637 static struct mtx cam_bioq_lock;
638
639 /* "Pool" of inactive ccbs managed by xpt_alloc_ccb and xpt_free_ccb */
640 static SLIST_HEAD(,ccb_hdr) ccb_freeq;
641 static u_int xpt_max_ccbs; /*
642 * Maximum size of ccb pool. Modified as
643 * devices are added/removed or have their
644 * opening counts changed.
645 */
646 static u_int xpt_ccb_count; /* Current count of allocated ccbs */
647
648 struct cam_periph *xpt_periph;
649
650 static periph_init_t xpt_periph_init;
651
652 static periph_init_t probe_periph_init;
653
654 static struct periph_driver xpt_driver =
655 {
656 xpt_periph_init, "xpt",
657 TAILQ_HEAD_INITIALIZER(xpt_driver.units)
658 };
659
660 static struct periph_driver probe_driver =
661 {
662 probe_periph_init, "probe",
663 TAILQ_HEAD_INITIALIZER(probe_driver.units)
664 };
665
666 PERIPHDRIVER_DECLARE(xpt, xpt_driver);
667 PERIPHDRIVER_DECLARE(probe, probe_driver);
668
669
670 static d_open_t xptopen;
671 static d_close_t xptclose;
672 static d_ioctl_t xptioctl;
673
674 static struct cdevsw xpt_cdevsw = {
675 .d_version = D_VERSION,
676 .d_flags = D_NEEDGIANT,
677 .d_open = xptopen,
678 .d_close = xptclose,
679 .d_ioctl = xptioctl,
680 .d_name = "xpt",
681 };
682
683 static struct intr_config_hook *xpt_config_hook;
684
685 /* Registered busses */
686 static TAILQ_HEAD(,cam_eb) xpt_busses;
687 static u_int bus_generation;
688
689 /* Storage for debugging datastructures */
690 #ifdef CAMDEBUG
691 struct cam_path *cam_dpath;
692 u_int32_t cam_dflags;
693 u_int32_t cam_debug_delay;
694 #endif
695
696 /* Pointers to software interrupt handlers */
697 static void *cambio_ih;
698
699 #if defined(CAM_DEBUG_FLAGS) && !defined(CAMDEBUG)
700 #error "You must have options CAMDEBUG to use options CAM_DEBUG_FLAGS"
701 #endif
702
703 /*
704 * In order to enable the CAM_DEBUG_* options, the user must have CAMDEBUG
705 * enabled. Also, the user must have either none, or all of CAM_DEBUG_BUS,
706 * CAM_DEBUG_TARGET, and CAM_DEBUG_LUN specified.
707 */
708 #if defined(CAM_DEBUG_BUS) || defined(CAM_DEBUG_TARGET) \
709 || defined(CAM_DEBUG_LUN)
710 #ifdef CAMDEBUG
711 #if !defined(CAM_DEBUG_BUS) || !defined(CAM_DEBUG_TARGET) \
712 || !defined(CAM_DEBUG_LUN)
713 #error "You must define all or none of CAM_DEBUG_BUS, CAM_DEBUG_TARGET \
714 and CAM_DEBUG_LUN"
715 #endif /* !CAM_DEBUG_BUS || !CAM_DEBUG_TARGET || !CAM_DEBUG_LUN */
716 #else /* !CAMDEBUG */
717 #error "You must use options CAMDEBUG if you use the CAM_DEBUG_* options"
718 #endif /* CAMDEBUG */
719 #endif /* CAM_DEBUG_BUS || CAM_DEBUG_TARGET || CAM_DEBUG_LUN */
720
721 /* Our boot-time initialization hook */
722 static int cam_module_event_handler(module_t, int /*modeventtype_t*/, void *);
723
724 static moduledata_t cam_moduledata = {
725 "cam",
726 cam_module_event_handler,
727 NULL
728 };
729
730 static void xpt_init(void *);
731
732 DECLARE_MODULE(cam, cam_moduledata, SI_SUB_CONFIGURE, SI_ORDER_SECOND);
733 MODULE_VERSION(cam, 1);
734
735
736 static cam_status xpt_compile_path(struct cam_path *new_path,
737 struct cam_periph *perph,
738 path_id_t path_id,
739 target_id_t target_id,
740 lun_id_t lun_id);
741
742 static void xpt_release_path(struct cam_path *path);
743
744 static void xpt_async_bcast(struct async_list *async_head,
745 u_int32_t async_code,
746 struct cam_path *path,
747 void *async_arg);
748 static void xpt_dev_async(u_int32_t async_code,
749 struct cam_eb *bus,
750 struct cam_et *target,
751 struct cam_ed *device,
752 void *async_arg);
753 static path_id_t xptnextfreepathid(void);
754 static path_id_t xptpathid(const char *sim_name, int sim_unit, int sim_bus);
755 static union ccb *xpt_get_ccb(struct cam_ed *device);
756 static int xpt_schedule_dev(struct camq *queue, cam_pinfo *dev_pinfo,
757 u_int32_t new_priority);
758 static void xpt_run_dev_allocq(struct cam_eb *bus);
759 static void xpt_run_dev_sendq(struct cam_eb *bus);
760 static timeout_t xpt_release_devq_timeout;
761 static timeout_t xpt_release_simq_timeout;
762 static void xpt_release_bus(struct cam_eb *bus);
763 static void xpt_release_devq_device(struct cam_ed *dev, u_int count,
764 int run_queue);
765 static struct cam_et*
766 xpt_alloc_target(struct cam_eb *bus, target_id_t target_id);
767 static void xpt_release_target(struct cam_eb *bus, struct cam_et *target);
768 static struct cam_ed*
769 xpt_alloc_device(struct cam_eb *bus, struct cam_et *target,
770 lun_id_t lun_id);
771 static void xpt_release_device(struct cam_eb *bus, struct cam_et *target,
772 struct cam_ed *device);
773 static u_int32_t xpt_dev_ccbq_resize(struct cam_path *path, int newopenings);
774 static struct cam_eb*
775 xpt_find_bus(path_id_t path_id);
776 static struct cam_et*
777 xpt_find_target(struct cam_eb *bus, target_id_t target_id);
778 static struct cam_ed*
779 xpt_find_device(struct cam_et *target, lun_id_t lun_id);
780 static void xpt_scan_bus(struct cam_periph *periph, union ccb *ccb);
781 static void xpt_scan_lun(struct cam_periph *periph,
782 struct cam_path *path, cam_flags flags,
783 union ccb *ccb);
784 static void xptscandone(struct cam_periph *periph, union ccb *done_ccb);
785 static xpt_busfunc_t xptconfigbuscountfunc;
786 static xpt_busfunc_t xptconfigfunc;
787 static void xpt_config(void *arg);
788 static xpt_devicefunc_t xptpassannouncefunc;
789 static void xpt_finishconfig(struct cam_periph *periph, union ccb *ccb);
790 static void xptaction(struct cam_sim *sim, union ccb *work_ccb);
791 static void xptpoll(struct cam_sim *sim);
792 static void camisr(void *);
793 #if 0
794 static void xptstart(struct cam_periph *periph, union ccb *work_ccb);
795 static void xptasync(struct cam_periph *periph,
796 u_int32_t code, cam_path *path);
797 #endif
798 static dev_match_ret xptbusmatch(struct dev_match_pattern *patterns,
799 u_int num_patterns, struct cam_eb *bus);
800 static dev_match_ret xptdevicematch(struct dev_match_pattern *patterns,
801 u_int num_patterns,
802 struct cam_ed *device);
803 static dev_match_ret xptperiphmatch(struct dev_match_pattern *patterns,
804 u_int num_patterns,
805 struct cam_periph *periph);
806 static xpt_busfunc_t xptedtbusfunc;
807 static xpt_targetfunc_t xptedttargetfunc;
808 static xpt_devicefunc_t xptedtdevicefunc;
809 static xpt_periphfunc_t xptedtperiphfunc;
810 static xpt_pdrvfunc_t xptplistpdrvfunc;
811 static xpt_periphfunc_t xptplistperiphfunc;
812 static int xptedtmatch(struct ccb_dev_match *cdm);
813 static int xptperiphlistmatch(struct ccb_dev_match *cdm);
814 static int xptbustraverse(struct cam_eb *start_bus,
815 xpt_busfunc_t *tr_func, void *arg);
816 static int xpttargettraverse(struct cam_eb *bus,
817 struct cam_et *start_target,
818 xpt_targetfunc_t *tr_func, void *arg);
819 static int xptdevicetraverse(struct cam_et *target,
820 struct cam_ed *start_device,
821 xpt_devicefunc_t *tr_func, void *arg);
822 static int xptperiphtraverse(struct cam_ed *device,
823 struct cam_periph *start_periph,
824 xpt_periphfunc_t *tr_func, void *arg);
825 static int xptpdrvtraverse(struct periph_driver **start_pdrv,
826 xpt_pdrvfunc_t *tr_func, void *arg);
827 static int xptpdperiphtraverse(struct periph_driver **pdrv,
828 struct cam_periph *start_periph,
829 xpt_periphfunc_t *tr_func,
830 void *arg);
831 static xpt_busfunc_t xptdefbusfunc;
832 static xpt_targetfunc_t xptdeftargetfunc;
833 static xpt_devicefunc_t xptdefdevicefunc;
834 static xpt_periphfunc_t xptdefperiphfunc;
835 static int xpt_for_all_busses(xpt_busfunc_t *tr_func, void *arg);
836 #ifdef notusedyet
837 static int xpt_for_all_targets(xpt_targetfunc_t *tr_func,
838 void *arg);
839 #endif
840 static int xpt_for_all_devices(xpt_devicefunc_t *tr_func,
841 void *arg);
842 #ifdef notusedyet
843 static int xpt_for_all_periphs(xpt_periphfunc_t *tr_func,
844 void *arg);
845 #endif
846 static xpt_devicefunc_t xptsetasyncfunc;
847 static xpt_busfunc_t xptsetasyncbusfunc;
848 static cam_status xptregister(struct cam_periph *periph,
849 void *arg);
850 static cam_status proberegister(struct cam_periph *periph,
851 void *arg);
852 static void probeschedule(struct cam_periph *probe_periph);
853 static void probestart(struct cam_periph *periph, union ccb *start_ccb);
854 static void proberequestdefaultnegotiation(struct cam_periph *periph);
855 static void probedone(struct cam_periph *periph, union ccb *done_ccb);
856 static void probecleanup(struct cam_periph *periph);
857 static void xpt_find_quirk(struct cam_ed *device);
858 #ifdef CAM_NEW_TRAN_CODE
859 static void xpt_devise_transport(struct cam_path *path);
860 #endif /* CAM_NEW_TRAN_CODE */
861 static void xpt_set_transfer_settings(struct ccb_trans_settings *cts,
862 struct cam_ed *device,
863 int async_update);
864 static void xpt_toggle_tags(struct cam_path *path);
865 static void xpt_start_tags(struct cam_path *path);
866 static __inline int xpt_schedule_dev_allocq(struct cam_eb *bus,
867 struct cam_ed *dev);
868 static __inline int xpt_schedule_dev_sendq(struct cam_eb *bus,
869 struct cam_ed *dev);
870 static __inline int periph_is_queued(struct cam_periph *periph);
871 static __inline int device_is_alloc_queued(struct cam_ed *device);
872 static __inline int device_is_send_queued(struct cam_ed *device);
873 static __inline int dev_allocq_is_runnable(struct cam_devq *devq);
874
875 static __inline int
876 xpt_schedule_dev_allocq(struct cam_eb *bus, struct cam_ed *dev)
877 {
878 int retval;
879
880 if (dev->ccbq.devq_openings > 0) {
881 if ((dev->flags & CAM_DEV_RESIZE_QUEUE_NEEDED) != 0) {
882 cam_ccbq_resize(&dev->ccbq,
883 dev->ccbq.dev_openings
884 + dev->ccbq.dev_active);
885 dev->flags &= ~CAM_DEV_RESIZE_QUEUE_NEEDED;
886 }
887 /*
888 * The priority of a device waiting for CCB resources
889 * is that of the the highest priority peripheral driver
890 * enqueued.
891 */
892 retval = xpt_schedule_dev(&bus->sim->devq->alloc_queue,
893 &dev->alloc_ccb_entry.pinfo,
894 CAMQ_GET_HEAD(&dev->drvq)->priority);
895 } else {
896 retval = 0;
897 }
898
899 return (retval);
900 }
901
902 static __inline int
903 xpt_schedule_dev_sendq(struct cam_eb *bus, struct cam_ed *dev)
904 {
905 int retval;
906
907 if (dev->ccbq.dev_openings > 0) {
908 /*
909 * The priority of a device waiting for controller
910 * resources is that of the the highest priority CCB
911 * enqueued.
912 */
913 retval =
914 xpt_schedule_dev(&bus->sim->devq->send_queue,
915 &dev->send_ccb_entry.pinfo,
916 CAMQ_GET_HEAD(&dev->ccbq.queue)->priority);
917 } else {
918 retval = 0;
919 }
920 return (retval);
921 }
922
923 static __inline int
924 periph_is_queued(struct cam_periph *periph)
925 {
926 return (periph->pinfo.index != CAM_UNQUEUED_INDEX);
927 }
928
929 static __inline int
930 device_is_alloc_queued(struct cam_ed *device)
931 {
932 return (device->alloc_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX);
933 }
934
935 static __inline int
936 device_is_send_queued(struct cam_ed *device)
937 {
938 return (device->send_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX);
939 }
940
941 static __inline int
942 dev_allocq_is_runnable(struct cam_devq *devq)
943 {
944 /*
945 * Have work to do.
946 * Have space to do more work.
947 * Allowed to do work.
948 */
949 return ((devq->alloc_queue.qfrozen_cnt == 0)
950 && (devq->alloc_queue.entries > 0)
951 && (devq->alloc_openings > 0));
952 }
953
954 static void
955 xpt_periph_init()
956 {
957 make_dev(&xpt_cdevsw, 0, UID_ROOT, GID_OPERATOR, 0600, "xpt0");
958 }
959
960 static void
961 probe_periph_init()
962 {
963 }
964
965
966 static void
967 xptdone(struct cam_periph *periph, union ccb *done_ccb)
968 {
969 /* Caller will release the CCB */
970 wakeup(&done_ccb->ccb_h.cbfcnp);
971 }
972
973 static int
974 xptopen(struct cdev *dev, int flags, int fmt, struct thread *td)
975 {
976 int unit;
977
978 unit = minor(dev) & 0xff;
979
980 /*
981 * Only allow read-write access.
982 */
983 if (((flags & FWRITE) == 0) || ((flags & FREAD) == 0))
984 return(EPERM);
985
986 /*
987 * We don't allow nonblocking access.
988 */
989 if ((flags & O_NONBLOCK) != 0) {
990 printf("xpt%d: can't do nonblocking access\n", unit);
991 return(ENODEV);
992 }
993
994 /*
995 * We only have one transport layer right now. If someone accesses
996 * us via something other than minor number 1, point out their
997 * mistake.
998 */
999 if (unit != 0) {
1000 printf("xptopen: got invalid xpt unit %d\n", unit);
1001 return(ENXIO);
1002 }
1003
1004 /* Mark ourselves open */
1005 xsoftc.flags |= XPT_FLAG_OPEN;
1006
1007 return(0);
1008 }
1009
1010 static int
1011 xptclose(struct cdev *dev, int flag, int fmt, struct thread *td)
1012 {
1013 int unit;
1014
1015 unit = minor(dev) & 0xff;
1016
1017 /*
1018 * We only have one transport layer right now. If someone accesses
1019 * us via something other than minor number 1, point out their
1020 * mistake.
1021 */
1022 if (unit != 0) {
1023 printf("xptclose: got invalid xpt unit %d\n", unit);
1024 return(ENXIO);
1025 }
1026
1027 /* Mark ourselves closed */
1028 xsoftc.flags &= ~XPT_FLAG_OPEN;
1029
1030 return(0);
1031 }
1032
1033 static int
1034 xptioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td)
1035 {
1036 int unit, error;
1037
1038 error = 0;
1039 unit = minor(dev) & 0xff;
1040
1041 /*
1042 * We only have one transport layer right now. If someone accesses
1043 * us via something other than minor number 1, point out their
1044 * mistake.
1045 */
1046 if (unit != 0) {
1047 printf("xptioctl: got invalid xpt unit %d\n", unit);
1048 return(ENXIO);
1049 }
1050
1051 switch(cmd) {
1052 /*
1053 * For the transport layer CAMIOCOMMAND ioctl, we really only want
1054 * to accept CCB types that don't quite make sense to send through a
1055 * passthrough driver. XPT_PATH_INQ is an exception to this, as stated
1056 * in the CAM spec.
1057 */
1058 case CAMIOCOMMAND: {
1059 union ccb *ccb;
1060 union ccb *inccb;
1061
1062 inccb = (union ccb *)addr;
1063
1064 switch(inccb->ccb_h.func_code) {
1065 case XPT_SCAN_BUS:
1066 case XPT_RESET_BUS:
1067 if ((inccb->ccb_h.target_id != CAM_TARGET_WILDCARD)
1068 || (inccb->ccb_h.target_lun != CAM_LUN_WILDCARD)) {
1069 error = EINVAL;
1070 break;
1071 }
1072 /* FALLTHROUGH */
1073 case XPT_PATH_INQ:
1074 case XPT_ENG_INQ:
1075 case XPT_SCAN_LUN:
1076
1077 ccb = xpt_alloc_ccb();
1078
1079 /*
1080 * Create a path using the bus, target, and lun the
1081 * user passed in.
1082 */
1083 if (xpt_create_path(&ccb->ccb_h.path, xpt_periph,
1084 inccb->ccb_h.path_id,
1085 inccb->ccb_h.target_id,
1086 inccb->ccb_h.target_lun) !=
1087 CAM_REQ_CMP){
1088 error = EINVAL;
1089 xpt_free_ccb(ccb);
1090 break;
1091 }
1092 /* Ensure all of our fields are correct */
1093 xpt_setup_ccb(&ccb->ccb_h, ccb->ccb_h.path,
1094 inccb->ccb_h.pinfo.priority);
1095 xpt_merge_ccb(ccb, inccb);
1096 ccb->ccb_h.cbfcnp = xptdone;
1097 cam_periph_runccb(ccb, NULL, 0, 0, NULL);
1098 bcopy(ccb, inccb, sizeof(union ccb));
1099 xpt_free_path(ccb->ccb_h.path);
1100 xpt_free_ccb(ccb);
1101 break;
1102
1103 case XPT_DEBUG: {
1104 union ccb ccb;
1105
1106 /*
1107 * This is an immediate CCB, so it's okay to
1108 * allocate it on the stack.
1109 */
1110
1111 /*
1112 * Create a path using the bus, target, and lun the
1113 * user passed in.
1114 */
1115 if (xpt_create_path(&ccb.ccb_h.path, xpt_periph,
1116 inccb->ccb_h.path_id,
1117 inccb->ccb_h.target_id,
1118 inccb->ccb_h.target_lun) !=
1119 CAM_REQ_CMP){
1120 error = EINVAL;
1121 break;
1122 }
1123 /* Ensure all of our fields are correct */
1124 xpt_setup_ccb(&ccb.ccb_h, ccb.ccb_h.path,
1125 inccb->ccb_h.pinfo.priority);
1126 xpt_merge_ccb(&ccb, inccb);
1127 ccb.ccb_h.cbfcnp = xptdone;
1128 xpt_action(&ccb);
1129 bcopy(&ccb, inccb, sizeof(union ccb));
1130 xpt_free_path(ccb.ccb_h.path);
1131 break;
1132
1133 }
1134 case XPT_DEV_MATCH: {
1135 struct cam_periph_map_info mapinfo;
1136 struct cam_path *old_path;
1137
1138 /*
1139 * We can't deal with physical addresses for this
1140 * type of transaction.
1141 */
1142 if (inccb->ccb_h.flags & CAM_DATA_PHYS) {
1143 error = EINVAL;
1144 break;
1145 }
1146
1147 /*
1148 * Save this in case the caller had it set to
1149 * something in particular.
1150 */
1151 old_path = inccb->ccb_h.path;
1152
1153 /*
1154 * We really don't need a path for the matching
1155 * code. The path is needed because of the
1156 * debugging statements in xpt_action(). They
1157 * assume that the CCB has a valid path.
1158 */
1159 inccb->ccb_h.path = xpt_periph->path;
1160
1161 bzero(&mapinfo, sizeof(mapinfo));
1162
1163 /*
1164 * Map the pattern and match buffers into kernel
1165 * virtual address space.
1166 */
1167 error = cam_periph_mapmem(inccb, &mapinfo);
1168
1169 if (error) {
1170 inccb->ccb_h.path = old_path;
1171 break;
1172 }
1173
1174 /*
1175 * This is an immediate CCB, we can send it on directly.
1176 */
1177 xpt_action(inccb);
1178
1179 /*
1180 * Map the buffers back into user space.
1181 */
1182 cam_periph_unmapmem(inccb, &mapinfo);
1183
1184 inccb->ccb_h.path = old_path;
1185
1186 error = 0;
1187 break;
1188 }
1189 default:
1190 error = ENOTSUP;
1191 break;
1192 }
1193 break;
1194 }
1195 /*
1196 * This is the getpassthru ioctl. It takes a XPT_GDEVLIST ccb as input,
1197 * with the periphal driver name and unit name filled in. The other
1198 * fields don't really matter as input. The passthrough driver name
1199 * ("pass"), and unit number are passed back in the ccb. The current
1200 * device generation number, and the index into the device peripheral
1201 * driver list, and the status are also passed back. Note that
1202 * since we do everything in one pass, unlike the XPT_GDEVLIST ccb,
1203 * we never return a status of CAM_GDEVLIST_LIST_CHANGED. It is
1204 * (or rather should be) impossible for the device peripheral driver
1205 * list to change since we look at the whole thing in one pass, and
1206 * we do it with splcam protection.
1207 *
1208 */
1209 case CAMGETPASSTHRU: {
1210 union ccb *ccb;
1211 struct cam_periph *periph;
1212 struct periph_driver **p_drv;
1213 char *name;
1214 u_int unit;
1215 u_int cur_generation;
1216 int base_periph_found;
1217 int splbreaknum;
1218 int s;
1219
1220 ccb = (union ccb *)addr;
1221 unit = ccb->cgdl.unit_number;
1222 name = ccb->cgdl.periph_name;
1223 /*
1224 * Every 100 devices, we want to drop our spl protection to
1225 * give the software interrupt handler a chance to run.
1226 * Most systems won't run into this check, but this should
1227 * avoid starvation in the software interrupt handler in
1228 * large systems.
1229 */
1230 splbreaknum = 100;
1231
1232 ccb = (union ccb *)addr;
1233
1234 base_periph_found = 0;
1235
1236 /*
1237 * Sanity check -- make sure we don't get a null peripheral
1238 * driver name.
1239 */
1240 if (*ccb->cgdl.periph_name == '\0') {
1241 error = EINVAL;
1242 break;
1243 }
1244
1245 /* Keep the list from changing while we traverse it */
1246 s = splcam();
1247 ptstartover:
1248 cur_generation = xsoftc.generation;
1249
1250 /* first find our driver in the list of drivers */
1251 for (p_drv = periph_drivers; *p_drv != NULL; p_drv++)
1252 if (strcmp((*p_drv)->driver_name, name) == 0)
1253 break;
1254
1255 if (*p_drv == NULL) {
1256 splx(s);
1257 ccb->ccb_h.status = CAM_REQ_CMP_ERR;
1258 ccb->cgdl.status = CAM_GDEVLIST_ERROR;
1259 *ccb->cgdl.periph_name = '\0';
1260 ccb->cgdl.unit_number = 0;
1261 error = ENOENT;
1262 break;
1263 }
1264
1265 /*
1266 * Run through every peripheral instance of this driver
1267 * and check to see whether it matches the unit passed
1268 * in by the user. If it does, get out of the loops and
1269 * find the passthrough driver associated with that
1270 * peripheral driver.
1271 */
1272 for (periph = TAILQ_FIRST(&(*p_drv)->units); periph != NULL;
1273 periph = TAILQ_NEXT(periph, unit_links)) {
1274
1275 if (periph->unit_number == unit) {
1276 break;
1277 } else if (--splbreaknum == 0) {
1278 splx(s);
1279 s = splcam();
1280 splbreaknum = 100;
1281 if (cur_generation != xsoftc.generation)
1282 goto ptstartover;
1283 }
1284 }
1285 /*
1286 * If we found the peripheral driver that the user passed
1287 * in, go through all of the peripheral drivers for that
1288 * particular device and look for a passthrough driver.
1289 */
1290 if (periph != NULL) {
1291 struct cam_ed *device;
1292 int i;
1293
1294 base_periph_found = 1;
1295 device = periph->path->device;
1296 for (i = 0, periph = SLIST_FIRST(&device->periphs);
1297 periph != NULL;
1298 periph = SLIST_NEXT(periph, periph_links), i++) {
1299 /*
1300 * Check to see whether we have a
1301 * passthrough device or not.
1302 */
1303 if (strcmp(periph->periph_name, "pass") == 0) {
1304 /*
1305 * Fill in the getdevlist fields.
1306 */
1307 strcpy(ccb->cgdl.periph_name,
1308 periph->periph_name);
1309 ccb->cgdl.unit_number =
1310 periph->unit_number;
1311 if (SLIST_NEXT(periph, periph_links))
1312 ccb->cgdl.status =
1313 CAM_GDEVLIST_MORE_DEVS;
1314 else
1315 ccb->cgdl.status =
1316 CAM_GDEVLIST_LAST_DEVICE;
1317 ccb->cgdl.generation =
1318 device->generation;
1319 ccb->cgdl.index = i;
1320 /*
1321 * Fill in some CCB header fields
1322 * that the user may want.
1323 */
1324 ccb->ccb_h.path_id =
1325 periph->path->bus->path_id;
1326 ccb->ccb_h.target_id =
1327 periph->path->target->target_id;
1328 ccb->ccb_h.target_lun =
1329 periph->path->device->lun_id;
1330 ccb->ccb_h.status = CAM_REQ_CMP;
1331 break;
1332 }
1333 }
1334 }
1335
1336 /*
1337 * If the periph is null here, one of two things has
1338 * happened. The first possibility is that we couldn't
1339 * find the unit number of the particular peripheral driver
1340 * that the user is asking about. e.g. the user asks for
1341 * the passthrough driver for "da11". We find the list of
1342 * "da" peripherals all right, but there is no unit 11.
1343 * The other possibility is that we went through the list
1344 * of peripheral drivers attached to the device structure,
1345 * but didn't find one with the name "pass". Either way,
1346 * we return ENOENT, since we couldn't find something.
1347 */
1348 if (periph == NULL) {
1349 ccb->ccb_h.status = CAM_REQ_CMP_ERR;
1350 ccb->cgdl.status = CAM_GDEVLIST_ERROR;
1351 *ccb->cgdl.periph_name = '\0';
1352 ccb->cgdl.unit_number = 0;
1353 error = ENOENT;
1354 /*
1355 * It is unfortunate that this is even necessary,
1356 * but there are many, many clueless users out there.
1357 * If this is true, the user is looking for the
1358 * passthrough driver, but doesn't have one in his
1359 * kernel.
1360 */
1361 if (base_periph_found == 1) {
1362 printf("xptioctl: pass driver is not in the "
1363 "kernel\n");
1364 printf("xptioctl: put \"device pass0\" in "
1365 "your kernel config file\n");
1366 }
1367 }
1368 splx(s);
1369 break;
1370 }
1371 default:
1372 error = ENOTTY;
1373 break;
1374 }
1375
1376 return(error);
1377 }
1378
1379 static int
1380 cam_module_event_handler(module_t mod, int what, void *arg)
1381 {
1382 if (what == MOD_LOAD) {
1383 xpt_init(NULL);
1384 } else if (what == MOD_UNLOAD) {
1385 return EBUSY;
1386 } else {
1387 return EOPNOTSUPP;
1388 }
1389
1390 return 0;
1391 }
1392
1393 /* Functions accessed by the peripheral drivers */
1394 static void
1395 xpt_init(dummy)
1396 void *dummy;
1397 {
1398 struct cam_sim *xpt_sim;
1399 struct cam_path *path;
1400 struct cam_devq *devq;
1401 cam_status status;
1402
1403 TAILQ_INIT(&xpt_busses);
1404 TAILQ_INIT(&cam_bioq);
1405 SLIST_INIT(&ccb_freeq);
1406 STAILQ_INIT(&highpowerq);
1407
1408 mtx_init(&cam_bioq_lock, "CAM BIOQ lock", NULL, MTX_DEF);
1409
1410 /*
1411 * The xpt layer is, itself, the equivelent of a SIM.
1412 * Allow 16 ccbs in the ccb pool for it. This should
1413 * give decent parallelism when we probe busses and
1414 * perform other XPT functions.
1415 */
1416 devq = cam_simq_alloc(16);
1417 xpt_sim = cam_sim_alloc(xptaction,
1418 xptpoll,
1419 "xpt",
1420 /*softc*/NULL,
1421 /*unit*/0,
1422 /*max_dev_transactions*/0,
1423 /*max_tagged_dev_transactions*/0,
1424 devq);
1425 xpt_max_ccbs = 16;
1426
1427 xpt_bus_register(xpt_sim, /*bus #*/0);
1428
1429 /*
1430 * Looking at the XPT from the SIM layer, the XPT is
1431 * the equivelent of a peripheral driver. Allocate
1432 * a peripheral driver entry for us.
1433 */
1434 if ((status = xpt_create_path(&path, NULL, CAM_XPT_PATH_ID,
1435 CAM_TARGET_WILDCARD,
1436 CAM_LUN_WILDCARD)) != CAM_REQ_CMP) {
1437 printf("xpt_init: xpt_create_path failed with status %#x,"
1438 " failing attach\n", status);
1439 return;
1440 }
1441
1442 cam_periph_alloc(xptregister, NULL, NULL, NULL, "xpt", CAM_PERIPH_BIO,
1443 path, NULL, 0, NULL);
1444 xpt_free_path(path);
1445
1446 xpt_sim->softc = xpt_periph;
1447
1448 /*
1449 * Register a callback for when interrupts are enabled.
1450 */
1451 xpt_config_hook =
1452 (struct intr_config_hook *)malloc(sizeof(struct intr_config_hook),
1453 M_TEMP, M_NOWAIT | M_ZERO);
1454 if (xpt_config_hook == NULL) {
1455 printf("xpt_init: Cannot malloc config hook "
1456 "- failing attach\n");
1457 return;
1458 }
1459
1460 xpt_config_hook->ich_func = xpt_config;
1461 if (config_intrhook_establish(xpt_config_hook) != 0) {
1462 free (xpt_config_hook, M_TEMP);
1463 printf("xpt_init: config_intrhook_establish failed "
1464 "- failing attach\n");
1465 }
1466
1467 /* Install our software interrupt handlers */
1468 swi_add(NULL, "cambio", camisr, &cam_bioq, SWI_CAMBIO, 0, &cambio_ih);
1469 }
1470
1471 static cam_status
1472 xptregister(struct cam_periph *periph, void *arg)
1473 {
1474 if (periph == NULL) {
1475 printf("xptregister: periph was NULL!!\n");
1476 return(CAM_REQ_CMP_ERR);
1477 }
1478
1479 periph->softc = NULL;
1480
1481 xpt_periph = periph;
1482
1483 return(CAM_REQ_CMP);
1484 }
1485
1486 int32_t
1487 xpt_add_periph(struct cam_periph *periph)
1488 {
1489 struct cam_ed *device;
1490 int32_t status;
1491 struct periph_list *periph_head;
1492
1493 GIANT_REQUIRED;
1494
1495 device = periph->path->device;
1496
1497 periph_head = &device->periphs;
1498
1499 status = CAM_REQ_CMP;
1500
1501 if (device != NULL) {
1502 int s;
1503
1504 /*
1505 * Make room for this peripheral
1506 * so it will fit in the queue
1507 * when it's scheduled to run
1508 */
1509 s = splsoftcam();
1510 status = camq_resize(&device->drvq,
1511 device->drvq.array_size + 1);
1512
1513 device->generation++;
1514
1515 SLIST_INSERT_HEAD(periph_head, periph, periph_links);
1516
1517 splx(s);
1518 }
1519
1520 xsoftc.generation++;
1521
1522 return (status);
1523 }
1524
1525 void
1526 xpt_remove_periph(struct cam_periph *periph)
1527 {
1528 struct cam_ed *device;
1529
1530 GIANT_REQUIRED;
1531
1532 device = periph->path->device;
1533
1534 if (device != NULL) {
1535 int s;
1536 struct periph_list *periph_head;
1537
1538 periph_head = &device->periphs;
1539
1540 /* Release the slot for this peripheral */
1541 s = splsoftcam();
1542 camq_resize(&device->drvq, device->drvq.array_size - 1);
1543
1544 device->generation++;
1545
1546 SLIST_REMOVE(periph_head, periph, cam_periph, periph_links);
1547
1548 splx(s);
1549 }
1550
1551 xsoftc.generation++;
1552
1553 }
1554
1555 #ifdef CAM_NEW_TRAN_CODE
1556
1557 void
1558 xpt_announce_periph(struct cam_periph *periph, char *announce_string)
1559 {
1560 struct ccb_pathinq cpi;
1561 struct ccb_trans_settings cts;
1562 struct cam_path *path;
1563 u_int speed;
1564 u_int freq;
1565 u_int mb;
1566 int s;
1567
1568 GIANT_REQUIRED;
1569
1570 path = periph->path;
1571 /*
1572 * To ensure that this is printed in one piece,
1573 * mask out CAM interrupts.
1574 */
1575 s = splsoftcam();
1576 printf("%s%d at %s%d bus %d target %d lun %d\n",
1577 periph->periph_name, periph->unit_number,
1578 path->bus->sim->sim_name,
1579 path->bus->sim->unit_number,
1580 path->bus->sim->bus_id,
1581 path->target->target_id,
1582 path->device->lun_id);
1583 printf("%s%d: ", periph->periph_name, periph->unit_number);
1584 scsi_print_inquiry(&path->device->inq_data);
1585 if (bootverbose && path->device->serial_num_len > 0) {
1586 /* Don't wrap the screen - print only the first 60 chars */
1587 printf("%s%d: Serial Number %.60s\n", periph->periph_name,
1588 periph->unit_number, path->device->serial_num);
1589 }
1590 xpt_setup_ccb(&cts.ccb_h, path, /*priority*/1);
1591 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
1592 cts.type = CTS_TYPE_CURRENT_SETTINGS;
1593 xpt_action((union ccb*)&cts);
1594
1595 /* Ask the SIM for its base transfer speed */
1596 xpt_setup_ccb(&cpi.ccb_h, path, /*priority*/1);
1597 cpi.ccb_h.func_code = XPT_PATH_INQ;
1598 xpt_action((union ccb *)&cpi);
1599
1600 speed = cpi.base_transfer_speed;
1601 freq = 0;
1602 if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_SPI) {
1603 struct ccb_trans_settings_spi *spi;
1604
1605 spi = &cts.xport_specific.spi;
1606 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) != 0
1607 && spi->sync_offset != 0) {
1608 freq = scsi_calc_syncsrate(spi->sync_period);
1609 speed = freq;
1610 }
1611
1612 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0)
1613 speed *= (0x01 << spi->bus_width);
1614 }
1615
1616 if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_FC) {
1617 struct ccb_trans_settings_fc *fc = &cts.xport_specific.fc;
1618 if (fc->valid & CTS_FC_VALID_SPEED) {
1619 speed = fc->bitrate;
1620 }
1621 }
1622
1623 mb = speed / 1000;
1624 if (mb > 0)
1625 printf("%s%d: %d.%03dMB/s transfers",
1626 periph->periph_name, periph->unit_number,
1627 mb, speed % 1000);
1628 else
1629 printf("%s%d: %dKB/s transfers", periph->periph_name,
1630 periph->unit_number, speed);
1631 /* Report additional information about SPI connections */
1632 if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_SPI) {
1633 struct ccb_trans_settings_spi *spi;
1634
1635 spi = &cts.xport_specific.spi;
1636 if (freq != 0) {
1637 printf(" (%d.%03dMHz%s, offset %d", freq / 1000,
1638 freq % 1000,
1639 (spi->ppr_options & MSG_EXT_PPR_DT_REQ) != 0
1640 ? " DT" : "",
1641 spi->sync_offset);
1642 }
1643 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0
1644 && spi->bus_width > 0) {
1645 if (freq != 0) {
1646 printf(", ");
1647 } else {
1648 printf(" (");
1649 }
1650 printf("%dbit)", 8 * (0x01 << spi->bus_width));
1651 } else if (freq != 0) {
1652 printf(")");
1653 }
1654 }
1655 if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_FC) {
1656 struct ccb_trans_settings_fc *fc;
1657
1658 fc = &cts.xport_specific.fc;
1659 if (fc->valid & CTS_FC_VALID_WWNN)
1660 printf(" WWNN 0x%llx", (long long) fc->wwnn);
1661 if (fc->valid & CTS_FC_VALID_WWPN)
1662 printf(" WWPN 0x%llx", (long long) fc->wwpn);
1663 if (fc->valid & CTS_FC_VALID_PORT)
1664 printf(" PortID 0x%x", fc->port);
1665 }
1666
1667 if (path->device->inq_flags & SID_CmdQue
1668 || path->device->flags & CAM_DEV_TAG_AFTER_COUNT) {
1669 printf("\n%s%d: Tagged Queueing Enabled",
1670 periph->periph_name, periph->unit_number);
1671 }
1672 printf("\n");
1673
1674 /*
1675 * We only want to print the caller's announce string if they've
1676 * passed one in..
1677 */
1678 if (announce_string != NULL)
1679 printf("%s%d: %s\n", periph->periph_name,
1680 periph->unit_number, announce_string);
1681 splx(s);
1682 }
1683 #else /* CAM_NEW_TRAN_CODE */
1684 void
1685 xpt_announce_periph(struct cam_periph *periph, char *announce_string)
1686 {
1687 int s;
1688 u_int mb;
1689 struct cam_path *path;
1690 struct ccb_trans_settings cts;
1691
1692 GIANT_REQUIRED;
1693
1694 path = periph->path;
1695 /*
1696 * To ensure that this is printed in one piece,
1697 * mask out CAM interrupts.
1698 */
1699 s = splsoftcam();
1700 printf("%s%d at %s%d bus %d target %d lun %d\n",
1701 periph->periph_name, periph->unit_number,
1702 path->bus->sim->sim_name,
1703 path->bus->sim->unit_number,
1704 path->bus->sim->bus_id,
1705 path->target->target_id,
1706 path->device->lun_id);
1707 printf("%s%d: ", periph->periph_name, periph->unit_number);
1708 scsi_print_inquiry(&path->device->inq_data);
1709 if ((bootverbose)
1710 && (path->device->serial_num_len > 0)) {
1711 /* Don't wrap the screen - print only the first 60 chars */
1712 printf("%s%d: Serial Number %.60s\n", periph->periph_name,
1713 periph->unit_number, path->device->serial_num);
1714 }
1715 xpt_setup_ccb(&cts.ccb_h, path, /*priority*/1);
1716 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
1717 cts.flags = CCB_TRANS_CURRENT_SETTINGS;
1718 xpt_action((union ccb*)&cts);
1719 if (cts.ccb_h.status == CAM_REQ_CMP) {
1720 u_int speed;
1721 u_int freq;
1722
1723 if ((cts.valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0
1724 && cts.sync_offset != 0) {
1725 freq = scsi_calc_syncsrate(cts.sync_period);
1726 speed = freq;
1727 } else {
1728 struct ccb_pathinq cpi;
1729
1730 /* Ask the SIM for its base transfer speed */
1731 xpt_setup_ccb(&cpi.ccb_h, path, /*priority*/1);
1732 cpi.ccb_h.func_code = XPT_PATH_INQ;
1733 xpt_action((union ccb *)&cpi);
1734
1735 speed = cpi.base_transfer_speed;
1736 freq = 0;
1737 }
1738 if ((cts.valid & CCB_TRANS_BUS_WIDTH_VALID) != 0)
1739 speed *= (0x01 << cts.bus_width);
1740 mb = speed / 1000;
1741 if (mb > 0)
1742 printf("%s%d: %d.%03dMB/s transfers",
1743 periph->periph_name, periph->unit_number,
1744 mb, speed % 1000);
1745 else
1746 printf("%s%d: %dKB/s transfers", periph->periph_name,
1747 periph->unit_number, speed);
1748 if ((cts.valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0
1749 && cts.sync_offset != 0) {
1750 printf(" (%d.%03dMHz, offset %d", freq / 1000,
1751 freq % 1000, cts.sync_offset);
1752 }
1753 if ((cts.valid & CCB_TRANS_BUS_WIDTH_VALID) != 0
1754 && cts.bus_width > 0) {
1755 if ((cts.valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0
1756 && cts.sync_offset != 0) {
1757 printf(", ");
1758 } else {
1759 printf(" (");
1760 }
1761 printf("%dbit)", 8 * (0x01 << cts.bus_width));
1762 } else if ((cts.valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0
1763 && cts.sync_offset != 0) {
1764 printf(")");
1765 }
1766
1767 if (path->device->inq_flags & SID_CmdQue
1768 || path->device->flags & CAM_DEV_TAG_AFTER_COUNT) {
1769 printf(", Tagged Queueing Enabled");
1770 }
1771
1772 printf("\n");
1773 } else if (path->device->inq_flags & SID_CmdQue
1774 || path->device->flags & CAM_DEV_TAG_AFTER_COUNT) {
1775 printf("%s%d: Tagged Queueing Enabled\n",
1776 periph->periph_name, periph->unit_number);
1777 }
1778
1779 /*
1780 * We only want to print the caller's announce string if they've
1781 * passed one in..
1782 */
1783 if (announce_string != NULL)
1784 printf("%s%d: %s\n", periph->periph_name,
1785 periph->unit_number, announce_string);
1786 splx(s);
1787 }
1788
1789 #endif /* CAM_NEW_TRAN_CODE */
1790
1791 static dev_match_ret
1792 xptbusmatch(struct dev_match_pattern *patterns, u_int num_patterns,
1793 struct cam_eb *bus)
1794 {
1795 dev_match_ret retval;
1796 int i;
1797
1798 retval = DM_RET_NONE;
1799
1800 /*
1801 * If we aren't given something to match against, that's an error.
1802 */
1803 if (bus == NULL)
1804 return(DM_RET_ERROR);
1805
1806 /*
1807 * If there are no match entries, then this bus matches no
1808 * matter what.
1809 */
1810 if ((patterns == NULL) || (num_patterns == 0))
1811 return(DM_RET_DESCEND | DM_RET_COPY);
1812
1813 for (i = 0; i < num_patterns; i++) {
1814 struct bus_match_pattern *cur_pattern;
1815
1816 /*
1817 * If the pattern in question isn't for a bus node, we
1818 * aren't interested. However, we do indicate to the
1819 * calling routine that we should continue descending the
1820 * tree, since the user wants to match against lower-level
1821 * EDT elements.
1822 */
1823 if (patterns[i].type != DEV_MATCH_BUS) {
1824 if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)
1825 retval |= DM_RET_DESCEND;
1826 continue;
1827 }
1828
1829 cur_pattern = &patterns[i].pattern.bus_pattern;
1830
1831 /*
1832 * If they want to match any bus node, we give them any
1833 * device node.
1834 */
1835 if (cur_pattern->flags == BUS_MATCH_ANY) {
1836 /* set the copy flag */
1837 retval |= DM_RET_COPY;
1838
1839 /*
1840 * If we've already decided on an action, go ahead
1841 * and return.
1842 */
1843 if ((retval & DM_RET_ACTION_MASK) != DM_RET_NONE)
1844 return(retval);
1845 }
1846
1847 /*
1848 * Not sure why someone would do this...
1849 */
1850 if (cur_pattern->flags == BUS_MATCH_NONE)
1851 continue;
1852
1853 if (((cur_pattern->flags & BUS_MATCH_PATH) != 0)
1854 && (cur_pattern->path_id != bus->path_id))
1855 continue;
1856
1857 if (((cur_pattern->flags & BUS_MATCH_BUS_ID) != 0)
1858 && (cur_pattern->bus_id != bus->sim->bus_id))
1859 continue;
1860
1861 if (((cur_pattern->flags & BUS_MATCH_UNIT) != 0)
1862 && (cur_pattern->unit_number != bus->sim->unit_number))
1863 continue;
1864
1865 if (((cur_pattern->flags & BUS_MATCH_NAME) != 0)
1866 && (strncmp(cur_pattern->dev_name, bus->sim->sim_name,
1867 DEV_IDLEN) != 0))
1868 continue;
1869
1870 /*
1871 * If we get to this point, the user definitely wants
1872 * information on this bus. So tell the caller to copy the
1873 * data out.
1874 */
1875 retval |= DM_RET_COPY;
1876
1877 /*
1878 * If the return action has been set to descend, then we
1879 * know that we've already seen a non-bus matching
1880 * expression, therefore we need to further descend the tree.
1881 * This won't change by continuing around the loop, so we
1882 * go ahead and return. If we haven't seen a non-bus
1883 * matching expression, we keep going around the loop until
1884 * we exhaust the matching expressions. We'll set the stop
1885 * flag once we fall out of the loop.
1886 */
1887 if ((retval & DM_RET_ACTION_MASK) == DM_RET_DESCEND)
1888 return(retval);
1889 }
1890
1891 /*
1892 * If the return action hasn't been set to descend yet, that means
1893 * we haven't seen anything other than bus matching patterns. So
1894 * tell the caller to stop descending the tree -- the user doesn't
1895 * want to match against lower level tree elements.
1896 */
1897 if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)
1898 retval |= DM_RET_STOP;
1899
1900 return(retval);
1901 }
1902
1903 static dev_match_ret
1904 xptdevicematch(struct dev_match_pattern *patterns, u_int num_patterns,
1905 struct cam_ed *device)
1906 {
1907 dev_match_ret retval;
1908 int i;
1909
1910 retval = DM_RET_NONE;
1911
1912 /*
1913 * If we aren't given something to match against, that's an error.
1914 */
1915 if (device == NULL)
1916 return(DM_RET_ERROR);
1917
1918 /*
1919 * If there are no match entries, then this device matches no
1920 * matter what.
1921 */
1922 if ((patterns == NULL) || (num_patterns == 0))
1923 return(DM_RET_DESCEND | DM_RET_COPY);
1924
1925 for (i = 0; i < num_patterns; i++) {
1926 struct device_match_pattern *cur_pattern;
1927
1928 /*
1929 * If the pattern in question isn't for a device node, we
1930 * aren't interested.
1931 */
1932 if (patterns[i].type != DEV_MATCH_DEVICE) {
1933 if ((patterns[i].type == DEV_MATCH_PERIPH)
1934 && ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE))
1935 retval |= DM_RET_DESCEND;
1936 continue;
1937 }
1938
1939 cur_pattern = &patterns[i].pattern.device_pattern;
1940
1941 /*
1942 * If they want to match any device node, we give them any
1943 * device node.
1944 */
1945 if (cur_pattern->flags == DEV_MATCH_ANY) {
1946 /* set the copy flag */
1947 retval |= DM_RET_COPY;
1948
1949
1950 /*
1951 * If we've already decided on an action, go ahead
1952 * and return.
1953 */
1954 if ((retval & DM_RET_ACTION_MASK) != DM_RET_NONE)
1955 return(retval);
1956 }
1957
1958 /*
1959 * Not sure why someone would do this...
1960 */
1961 if (cur_pattern->flags == DEV_MATCH_NONE)
1962 continue;
1963
1964 if (((cur_pattern->flags & DEV_MATCH_PATH) != 0)
1965 && (cur_pattern->path_id != device->target->bus->path_id))
1966 continue;
1967
1968 if (((cur_pattern->flags & DEV_MATCH_TARGET) != 0)
1969 && (cur_pattern->target_id != device->target->target_id))
1970 continue;
1971
1972 if (((cur_pattern->flags & DEV_MATCH_LUN) != 0)
1973 && (cur_pattern->target_lun != device->lun_id))
1974 continue;
1975
1976 if (((cur_pattern->flags & DEV_MATCH_INQUIRY) != 0)
1977 && (cam_quirkmatch((caddr_t)&device->inq_data,
1978 (caddr_t)&cur_pattern->inq_pat,
1979 1, sizeof(cur_pattern->inq_pat),
1980 scsi_static_inquiry_match) == NULL))
1981 continue;
1982
1983 /*
1984 * If we get to this point, the user definitely wants
1985 * information on this device. So tell the caller to copy
1986 * the data out.
1987 */
1988 retval |= DM_RET_COPY;
1989
1990 /*
1991 * If the return action has been set to descend, then we
1992 * know that we've already seen a peripheral matching
1993 * expression, therefore we need to further descend the tree.
1994 * This won't change by continuing around the loop, so we
1995 * go ahead and return. If we haven't seen a peripheral
1996 * matching expression, we keep going around the loop until
1997 * we exhaust the matching expressions. We'll set the stop
1998 * flag once we fall out of the loop.
1999 */
2000 if ((retval & DM_RET_ACTION_MASK) == DM_RET_DESCEND)
2001 return(retval);
2002 }
2003
2004 /*
2005 * If the return action hasn't been set to descend yet, that means
2006 * we haven't seen any peripheral matching patterns. So tell the
2007 * caller to stop descending the tree -- the user doesn't want to
2008 * match against lower level tree elements.
2009 */
2010 if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)
2011 retval |= DM_RET_STOP;
2012
2013 return(retval);
2014 }
2015
2016 /*
2017 * Match a single peripheral against any number of match patterns.
2018 */
2019 static dev_match_ret
2020 xptperiphmatch(struct dev_match_pattern *patterns, u_int num_patterns,
2021 struct cam_periph *periph)
2022 {
2023 dev_match_ret retval;
2024 int i;
2025
2026 /*
2027 * If we aren't given something to match against, that's an error.
2028 */
2029 if (periph == NULL)
2030 return(DM_RET_ERROR);
2031
2032 /*
2033 * If there are no match entries, then this peripheral matches no
2034 * matter what.
2035 */
2036 if ((patterns == NULL) || (num_patterns == 0))
2037 return(DM_RET_STOP | DM_RET_COPY);
2038
2039 /*
2040 * There aren't any nodes below a peripheral node, so there's no
2041 * reason to descend the tree any further.
2042 */
2043 retval = DM_RET_STOP;
2044
2045 for (i = 0; i < num_patterns; i++) {
2046 struct periph_match_pattern *cur_pattern;
2047
2048 /*
2049 * If the pattern in question isn't for a peripheral, we
2050 * aren't interested.
2051 */
2052 if (patterns[i].type != DEV_MATCH_PERIPH)
2053 continue;
2054
2055 cur_pattern = &patterns[i].pattern.periph_pattern;
2056
2057 /*
2058 * If they want to match on anything, then we will do so.
2059 */
2060 if (cur_pattern->flags == PERIPH_MATCH_ANY) {
2061 /* set the copy flag */
2062 retval |= DM_RET_COPY;
2063
2064 /*
2065 * We've already set the return action to stop,
2066 * since there are no nodes below peripherals in
2067 * the tree.
2068 */
2069 return(retval);
2070 }
2071
2072 /*
2073 * Not sure why someone would do this...
2074 */
2075 if (cur_pattern->flags == PERIPH_MATCH_NONE)
2076 continue;
2077
2078 if (((cur_pattern->flags & PERIPH_MATCH_PATH) != 0)
2079 && (cur_pattern->path_id != periph->path->bus->path_id))
2080 continue;
2081
2082 /*
2083 * For the target and lun id's, we have to make sure the
2084 * target and lun pointers aren't NULL. The xpt peripheral
2085 * has a wildcard target and device.
2086 */
2087 if (((cur_pattern->flags & PERIPH_MATCH_TARGET) != 0)
2088 && ((periph->path->target == NULL)
2089 ||(cur_pattern->target_id != periph->path->target->target_id)))
2090 continue;
2091
2092 if (((cur_pattern->flags & PERIPH_MATCH_LUN) != 0)
2093 && ((periph->path->device == NULL)
2094 || (cur_pattern->target_lun != periph->path->device->lun_id)))
2095 continue;
2096
2097 if (((cur_pattern->flags & PERIPH_MATCH_UNIT) != 0)
2098 && (cur_pattern->unit_number != periph->unit_number))
2099 continue;
2100
2101 if (((cur_pattern->flags & PERIPH_MATCH_NAME) != 0)
2102 && (strncmp(cur_pattern->periph_name, periph->periph_name,
2103 DEV_IDLEN) != 0))
2104 continue;
2105
2106 /*
2107 * If we get to this point, the user definitely wants
2108 * information on this peripheral. So tell the caller to
2109 * copy the data out.
2110 */
2111 retval |= DM_RET_COPY;
2112
2113 /*
2114 * The return action has already been set to stop, since
2115 * peripherals don't have any nodes below them in the EDT.
2116 */
2117 return(retval);
2118 }
2119
2120 /*
2121 * If we get to this point, the peripheral that was passed in
2122 * doesn't match any of the patterns.
2123 */
2124 return(retval);
2125 }
2126
2127 static int
2128 xptedtbusfunc(struct cam_eb *bus, void *arg)
2129 {
2130 struct ccb_dev_match *cdm;
2131 dev_match_ret retval;
2132
2133 cdm = (struct ccb_dev_match *)arg;
2134
2135 /*
2136 * If our position is for something deeper in the tree, that means
2137 * that we've already seen this node. So, we keep going down.
2138 */
2139 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2140 && (cdm->pos.cookie.bus == bus)
2141 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2142 && (cdm->pos.cookie.target != NULL))
2143 retval = DM_RET_DESCEND;
2144 else
2145 retval = xptbusmatch(cdm->patterns, cdm->num_patterns, bus);
2146
2147 /*
2148 * If we got an error, bail out of the search.
2149 */
2150 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
2151 cdm->status = CAM_DEV_MATCH_ERROR;
2152 return(0);
2153 }
2154
2155 /*
2156 * If the copy flag is set, copy this bus out.
2157 */
2158 if (retval & DM_RET_COPY) {
2159 int spaceleft, j;
2160
2161 spaceleft = cdm->match_buf_len - (cdm->num_matches *
2162 sizeof(struct dev_match_result));
2163
2164 /*
2165 * If we don't have enough space to put in another
2166 * match result, save our position and tell the
2167 * user there are more devices to check.
2168 */
2169 if (spaceleft < sizeof(struct dev_match_result)) {
2170 bzero(&cdm->pos, sizeof(cdm->pos));
2171 cdm->pos.position_type =
2172 CAM_DEV_POS_EDT | CAM_DEV_POS_BUS;
2173
2174 cdm->pos.cookie.bus = bus;
2175 cdm->pos.generations[CAM_BUS_GENERATION]=
2176 bus_generation;
2177 cdm->status = CAM_DEV_MATCH_MORE;
2178 return(0);
2179 }
2180 j = cdm->num_matches;
2181 cdm->num_matches++;
2182 cdm->matches[j].type = DEV_MATCH_BUS;
2183 cdm->matches[j].result.bus_result.path_id = bus->path_id;
2184 cdm->matches[j].result.bus_result.bus_id = bus->sim->bus_id;
2185 cdm->matches[j].result.bus_result.unit_number =
2186 bus->sim->unit_number;
2187 strncpy(cdm->matches[j].result.bus_result.dev_name,
2188 bus->sim->sim_name, DEV_IDLEN);
2189 }
2190
2191 /*
2192 * If the user is only interested in busses, there's no
2193 * reason to descend to the next level in the tree.
2194 */
2195 if ((retval & DM_RET_ACTION_MASK) == DM_RET_STOP)
2196 return(1);
2197
2198 /*
2199 * If there is a target generation recorded, check it to
2200 * make sure the target list hasn't changed.
2201 */
2202 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2203 && (bus == cdm->pos.cookie.bus)
2204 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2205 && (cdm->pos.generations[CAM_TARGET_GENERATION] != 0)
2206 && (cdm->pos.generations[CAM_TARGET_GENERATION] !=
2207 bus->generation)) {
2208 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2209 return(0);
2210 }
2211
2212 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2213 && (cdm->pos.cookie.bus == bus)
2214 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2215 && (cdm->pos.cookie.target != NULL))
2216 return(xpttargettraverse(bus,
2217 (struct cam_et *)cdm->pos.cookie.target,
2218 xptedttargetfunc, arg));
2219 else
2220 return(xpttargettraverse(bus, NULL, xptedttargetfunc, arg));
2221 }
2222
2223 static int
2224 xptedttargetfunc(struct cam_et *target, void *arg)
2225 {
2226 struct ccb_dev_match *cdm;
2227
2228 cdm = (struct ccb_dev_match *)arg;
2229
2230 /*
2231 * If there is a device list generation recorded, check it to
2232 * make sure the device list hasn't changed.
2233 */
2234 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2235 && (cdm->pos.cookie.bus == target->bus)
2236 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2237 && (cdm->pos.cookie.target == target)
2238 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2239 && (cdm->pos.generations[CAM_DEV_GENERATION] != 0)
2240 && (cdm->pos.generations[CAM_DEV_GENERATION] !=
2241 target->generation)) {
2242 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2243 return(0);
2244 }
2245
2246 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2247 && (cdm->pos.cookie.bus == target->bus)
2248 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2249 && (cdm->pos.cookie.target == target)
2250 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2251 && (cdm->pos.cookie.device != NULL))
2252 return(xptdevicetraverse(target,
2253 (struct cam_ed *)cdm->pos.cookie.device,
2254 xptedtdevicefunc, arg));
2255 else
2256 return(xptdevicetraverse(target, NULL, xptedtdevicefunc, arg));
2257 }
2258
2259 static int
2260 xptedtdevicefunc(struct cam_ed *device, void *arg)
2261 {
2262
2263 struct ccb_dev_match *cdm;
2264 dev_match_ret retval;
2265
2266 cdm = (struct ccb_dev_match *)arg;
2267
2268 /*
2269 * If our position is for something deeper in the tree, that means
2270 * that we've already seen this node. So, we keep going down.
2271 */
2272 if ((cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2273 && (cdm->pos.cookie.device == device)
2274 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2275 && (cdm->pos.cookie.periph != NULL))
2276 retval = DM_RET_DESCEND;
2277 else
2278 retval = xptdevicematch(cdm->patterns, cdm->num_patterns,
2279 device);
2280
2281 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
2282 cdm->status = CAM_DEV_MATCH_ERROR;
2283 return(0);
2284 }
2285
2286 /*
2287 * If the copy flag is set, copy this device out.
2288 */
2289 if (retval & DM_RET_COPY) {
2290 int spaceleft, j;
2291
2292 spaceleft = cdm->match_buf_len - (cdm->num_matches *
2293 sizeof(struct dev_match_result));
2294
2295 /*
2296 * If we don't have enough space to put in another
2297 * match result, save our position and tell the
2298 * user there are more devices to check.
2299 */
2300 if (spaceleft < sizeof(struct dev_match_result)) {
2301 bzero(&cdm->pos, sizeof(cdm->pos));
2302 cdm->pos.position_type =
2303 CAM_DEV_POS_EDT | CAM_DEV_POS_BUS |
2304 CAM_DEV_POS_TARGET | CAM_DEV_POS_DEVICE;
2305
2306 cdm->pos.cookie.bus = device->target->bus;
2307 cdm->pos.generations[CAM_BUS_GENERATION]=
2308 bus_generation;
2309 cdm->pos.cookie.target = device->target;
2310 cdm->pos.generations[CAM_TARGET_GENERATION] =
2311 device->target->bus->generation;
2312 cdm->pos.cookie.device = device;
2313 cdm->pos.generations[CAM_DEV_GENERATION] =
2314 device->target->generation;
2315 cdm->status = CAM_DEV_MATCH_MORE;
2316 return(0);
2317 }
2318 j = cdm->num_matches;
2319 cdm->num_matches++;
2320 cdm->matches[j].type = DEV_MATCH_DEVICE;
2321 cdm->matches[j].result.device_result.path_id =
2322 device->target->bus->path_id;
2323 cdm->matches[j].result.device_result.target_id =
2324 device->target->target_id;
2325 cdm->matches[j].result.device_result.target_lun =
2326 device->lun_id;
2327 bcopy(&device->inq_data,
2328 &cdm->matches[j].result.device_result.inq_data,
2329 sizeof(struct scsi_inquiry_data));
2330
2331 /* Let the user know whether this device is unconfigured */
2332 if (device->flags & CAM_DEV_UNCONFIGURED)
2333 cdm->matches[j].result.device_result.flags =
2334 DEV_RESULT_UNCONFIGURED;
2335 else
2336 cdm->matches[j].result.device_result.flags =
2337 DEV_RESULT_NOFLAG;
2338 }
2339
2340 /*
2341 * If the user isn't interested in peripherals, don't descend
2342 * the tree any further.
2343 */
2344 if ((retval & DM_RET_ACTION_MASK) == DM_RET_STOP)
2345 return(1);
2346
2347 /*
2348 * If there is a peripheral list generation recorded, make sure
2349 * it hasn't changed.
2350 */
2351 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2352 && (device->target->bus == cdm->pos.cookie.bus)
2353 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2354 && (device->target == cdm->pos.cookie.target)
2355 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2356 && (device == cdm->pos.cookie.device)
2357 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2358 && (cdm->pos.generations[CAM_PERIPH_GENERATION] != 0)
2359 && (cdm->pos.generations[CAM_PERIPH_GENERATION] !=
2360 device->generation)){
2361 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2362 return(0);
2363 }
2364
2365 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2366 && (cdm->pos.cookie.bus == device->target->bus)
2367 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2368 && (cdm->pos.cookie.target == device->target)
2369 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2370 && (cdm->pos.cookie.device == device)
2371 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2372 && (cdm->pos.cookie.periph != NULL))
2373 return(xptperiphtraverse(device,
2374 (struct cam_periph *)cdm->pos.cookie.periph,
2375 xptedtperiphfunc, arg));
2376 else
2377 return(xptperiphtraverse(device, NULL, xptedtperiphfunc, arg));
2378 }
2379
2380 static int
2381 xptedtperiphfunc(struct cam_periph *periph, void *arg)
2382 {
2383 struct ccb_dev_match *cdm;
2384 dev_match_ret retval;
2385
2386 cdm = (struct ccb_dev_match *)arg;
2387
2388 retval = xptperiphmatch(cdm->patterns, cdm->num_patterns, periph);
2389
2390 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
2391 cdm->status = CAM_DEV_MATCH_ERROR;
2392 return(0);
2393 }
2394
2395 /*
2396 * If the copy flag is set, copy this peripheral out.
2397 */
2398 if (retval & DM_RET_COPY) {
2399 int spaceleft, j;
2400
2401 spaceleft = cdm->match_buf_len - (cdm->num_matches *
2402 sizeof(struct dev_match_result));
2403
2404 /*
2405 * If we don't have enough space to put in another
2406 * match result, save our position and tell the
2407 * user there are more devices to check.
2408 */
2409 if (spaceleft < sizeof(struct dev_match_result)) {
2410 bzero(&cdm->pos, sizeof(cdm->pos));
2411 cdm->pos.position_type =
2412 CAM_DEV_POS_EDT | CAM_DEV_POS_BUS |
2413 CAM_DEV_POS_TARGET | CAM_DEV_POS_DEVICE |
2414 CAM_DEV_POS_PERIPH;
2415
2416 cdm->pos.cookie.bus = periph->path->bus;
2417 cdm->pos.generations[CAM_BUS_GENERATION]=
2418 bus_generation;
2419 cdm->pos.cookie.target = periph->path->target;
2420 cdm->pos.generations[CAM_TARGET_GENERATION] =
2421 periph->path->bus->generation;
2422 cdm->pos.cookie.device = periph->path->device;
2423 cdm->pos.generations[CAM_DEV_GENERATION] =
2424 periph->path->target->generation;
2425 cdm->pos.cookie.periph = periph;
2426 cdm->pos.generations[CAM_PERIPH_GENERATION] =
2427 periph->path->device->generation;
2428 cdm->status = CAM_DEV_MATCH_MORE;
2429 return(0);
2430 }
2431
2432 j = cdm->num_matches;
2433 cdm->num_matches++;
2434 cdm->matches[j].type = DEV_MATCH_PERIPH;
2435 cdm->matches[j].result.periph_result.path_id =
2436 periph->path->bus->path_id;
2437 cdm->matches[j].result.periph_result.target_id =
2438 periph->path->target->target_id;
2439 cdm->matches[j].result.periph_result.target_lun =
2440 periph->path->device->lun_id;
2441 cdm->matches[j].result.periph_result.unit_number =
2442 periph->unit_number;
2443 strncpy(cdm->matches[j].result.periph_result.periph_name,
2444 periph->periph_name, DEV_IDLEN);
2445 }
2446
2447 return(1);
2448 }
2449
2450 static int
2451 xptedtmatch(struct ccb_dev_match *cdm)
2452 {
2453 int ret;
2454
2455 cdm->num_matches = 0;
2456
2457 /*
2458 * Check the bus list generation. If it has changed, the user
2459 * needs to reset everything and start over.
2460 */
2461 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2462 && (cdm->pos.generations[CAM_BUS_GENERATION] != 0)
2463 && (cdm->pos.generations[CAM_BUS_GENERATION] != bus_generation)) {
2464 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2465 return(0);
2466 }
2467
2468 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2469 && (cdm->pos.cookie.bus != NULL))
2470 ret = xptbustraverse((struct cam_eb *)cdm->pos.cookie.bus,
2471 xptedtbusfunc, cdm);
2472 else
2473 ret = xptbustraverse(NULL, xptedtbusfunc, cdm);
2474
2475 /*
2476 * If we get back 0, that means that we had to stop before fully
2477 * traversing the EDT. It also means that one of the subroutines
2478 * has set the status field to the proper value. If we get back 1,
2479 * we've fully traversed the EDT and copied out any matching entries.
2480 */
2481 if (ret == 1)
2482 cdm->status = CAM_DEV_MATCH_LAST;
2483
2484 return(ret);
2485 }
2486
2487 static int
2488 xptplistpdrvfunc(struct periph_driver **pdrv, void *arg)
2489 {
2490 struct ccb_dev_match *cdm;
2491
2492 cdm = (struct ccb_dev_match *)arg;
2493
2494 if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR)
2495 && (cdm->pos.cookie.pdrv == pdrv)
2496 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2497 && (cdm->pos.generations[CAM_PERIPH_GENERATION] != 0)
2498 && (cdm->pos.generations[CAM_PERIPH_GENERATION] !=
2499 (*pdrv)->generation)) {
2500 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2501 return(0);
2502 }
2503
2504 if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR)
2505 && (cdm->pos.cookie.pdrv == pdrv)
2506 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2507 && (cdm->pos.cookie.periph != NULL))
2508 return(xptpdperiphtraverse(pdrv,
2509 (struct cam_periph *)cdm->pos.cookie.periph,
2510 xptplistperiphfunc, arg));
2511 else
2512 return(xptpdperiphtraverse(pdrv, NULL,xptplistperiphfunc, arg));
2513 }
2514
2515 static int
2516 xptplistperiphfunc(struct cam_periph *periph, void *arg)
2517 {
2518 struct ccb_dev_match *cdm;
2519 dev_match_ret retval;
2520
2521 cdm = (struct ccb_dev_match *)arg;
2522
2523 retval = xptperiphmatch(cdm->patterns, cdm->num_patterns, periph);
2524
2525 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
2526 cdm->status = CAM_DEV_MATCH_ERROR;
2527 return(0);
2528 }
2529
2530 /*
2531 * If the copy flag is set, copy this peripheral out.
2532 */
2533 if (retval & DM_RET_COPY) {
2534 int spaceleft, j;
2535
2536 spaceleft = cdm->match_buf_len - (cdm->num_matches *
2537 sizeof(struct dev_match_result));
2538
2539 /*
2540 * If we don't have enough space to put in another
2541 * match result, save our position and tell the
2542 * user there are more devices to check.
2543 */
2544 if (spaceleft < sizeof(struct dev_match_result)) {
2545 struct periph_driver **pdrv;
2546
2547 pdrv = NULL;
2548 bzero(&cdm->pos, sizeof(cdm->pos));
2549 cdm->pos.position_type =
2550 CAM_DEV_POS_PDRV | CAM_DEV_POS_PDPTR |
2551 CAM_DEV_POS_PERIPH;
2552
2553 /*
2554 * This may look a bit non-sensical, but it is
2555 * actually quite logical. There are very few
2556 * peripheral drivers, and bloating every peripheral
2557 * structure with a pointer back to its parent
2558 * peripheral driver linker set entry would cost
2559 * more in the long run than doing this quick lookup.
2560 */
2561 for (pdrv = periph_drivers; *pdrv != NULL; pdrv++) {
2562 if (strcmp((*pdrv)->driver_name,
2563 periph->periph_name) == 0)
2564 break;
2565 }
2566
2567 if (*pdrv == NULL) {
2568 cdm->status = CAM_DEV_MATCH_ERROR;
2569 return(0);
2570 }
2571
2572 cdm->pos.cookie.pdrv = pdrv;
2573 /*
2574 * The periph generation slot does double duty, as
2575 * does the periph pointer slot. They are used for
2576 * both edt and pdrv lookups and positioning.
2577 */
2578 cdm->pos.cookie.periph = periph;
2579 cdm->pos.generations[CAM_PERIPH_GENERATION] =
2580 (*pdrv)->generation;
2581 cdm->status = CAM_DEV_MATCH_MORE;
2582 return(0);
2583 }
2584
2585 j = cdm->num_matches;
2586 cdm->num_matches++;
2587 cdm->matches[j].type = DEV_MATCH_PERIPH;
2588 cdm->matches[j].result.periph_result.path_id =
2589 periph->path->bus->path_id;
2590
2591 /*
2592 * The transport layer peripheral doesn't have a target or
2593 * lun.
2594 */
2595 if (periph->path->target)
2596 cdm->matches[j].result.periph_result.target_id =
2597 periph->path->target->target_id;
2598 else
2599 cdm->matches[j].result.periph_result.target_id = -1;
2600
2601 if (periph->path->device)
2602 cdm->matches[j].result.periph_result.target_lun =
2603 periph->path->device->lun_id;
2604 else
2605 cdm->matches[j].result.periph_result.target_lun = -1;
2606
2607 cdm->matches[j].result.periph_result.unit_number =
2608 periph->unit_number;
2609 strncpy(cdm->matches[j].result.periph_result.periph_name,
2610 periph->periph_name, DEV_IDLEN);
2611 }
2612
2613 return(1);
2614 }
2615
2616 static int
2617 xptperiphlistmatch(struct ccb_dev_match *cdm)
2618 {
2619 int ret;
2620
2621 cdm->num_matches = 0;
2622
2623 /*
2624 * At this point in the edt traversal function, we check the bus
2625 * list generation to make sure that no busses have been added or
2626 * removed since the user last sent a XPT_DEV_MATCH ccb through.
2627 * For the peripheral driver list traversal function, however, we
2628 * don't have to worry about new peripheral driver types coming or
2629 * going; they're in a linker set, and therefore can't change
2630 * without a recompile.
2631 */
2632
2633 if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR)
2634 && (cdm->pos.cookie.pdrv != NULL))
2635 ret = xptpdrvtraverse(
2636 (struct periph_driver **)cdm->pos.cookie.pdrv,
2637 xptplistpdrvfunc, cdm);
2638 else
2639 ret = xptpdrvtraverse(NULL, xptplistpdrvfunc, cdm);
2640
2641 /*
2642 * If we get back 0, that means that we had to stop before fully
2643 * traversing the peripheral driver tree. It also means that one of
2644 * the subroutines has set the status field to the proper value. If
2645 * we get back 1, we've fully traversed the EDT and copied out any
2646 * matching entries.
2647 */
2648 if (ret == 1)
2649 cdm->status = CAM_DEV_MATCH_LAST;
2650
2651 return(ret);
2652 }
2653
2654 static int
2655 xptbustraverse(struct cam_eb *start_bus, xpt_busfunc_t *tr_func, void *arg)
2656 {
2657 struct cam_eb *bus, *next_bus;
2658 int retval;
2659
2660 retval = 1;
2661
2662 for (bus = (start_bus ? start_bus : TAILQ_FIRST(&xpt_busses));
2663 bus != NULL;
2664 bus = next_bus) {
2665 next_bus = TAILQ_NEXT(bus, links);
2666
2667 retval = tr_func(bus, arg);
2668 if (retval == 0)
2669 return(retval);
2670 }
2671
2672 return(retval);
2673 }
2674
2675 static int
2676 xpttargettraverse(struct cam_eb *bus, struct cam_et *start_target,
2677 xpt_targetfunc_t *tr_func, void *arg)
2678 {
2679 struct cam_et *target, *next_target;
2680 int retval;
2681
2682 retval = 1;
2683 for (target = (start_target ? start_target :
2684 TAILQ_FIRST(&bus->et_entries));
2685 target != NULL; target = next_target) {
2686
2687 next_target = TAILQ_NEXT(target, links);
2688
2689 retval = tr_func(target, arg);
2690
2691 if (retval == 0)
2692 return(retval);
2693 }
2694
2695 return(retval);
2696 }
2697
2698 static int
2699 xptdevicetraverse(struct cam_et *target, struct cam_ed *start_device,
2700 xpt_devicefunc_t *tr_func, void *arg)
2701 {
2702 struct cam_ed *device, *next_device;
2703 int retval;
2704
2705 retval = 1;
2706 for (device = (start_device ? start_device :
2707 TAILQ_FIRST(&target->ed_entries));
2708 device != NULL;
2709 device = next_device) {
2710
2711 next_device = TAILQ_NEXT(device, links);
2712
2713 retval = tr_func(device, arg);
2714
2715 if (retval == 0)
2716 return(retval);
2717 }
2718
2719 return(retval);
2720 }
2721
2722 static int
2723 xptperiphtraverse(struct cam_ed *device, struct cam_periph *start_periph,
2724 xpt_periphfunc_t *tr_func, void *arg)
2725 {
2726 struct cam_periph *periph, *next_periph;
2727 int retval;
2728
2729 retval = 1;
2730
2731 for (periph = (start_periph ? start_periph :
2732 SLIST_FIRST(&device->periphs));
2733 periph != NULL;
2734 periph = next_periph) {
2735
2736 next_periph = SLIST_NEXT(periph, periph_links);
2737
2738 retval = tr_func(periph, arg);
2739 if (retval == 0)
2740 return(retval);
2741 }
2742
2743 return(retval);
2744 }
2745
2746 static int
2747 xptpdrvtraverse(struct periph_driver **start_pdrv,
2748 xpt_pdrvfunc_t *tr_func, void *arg)
2749 {
2750 struct periph_driver **pdrv;
2751 int retval;
2752
2753 retval = 1;
2754
2755 /*
2756 * We don't traverse the peripheral driver list like we do the
2757 * other lists, because it is a linker set, and therefore cannot be
2758 * changed during runtime. If the peripheral driver list is ever
2759 * re-done to be something other than a linker set (i.e. it can
2760 * change while the system is running), the list traversal should
2761 * be modified to work like the other traversal functions.
2762 */
2763 for (pdrv = (start_pdrv ? start_pdrv : periph_drivers);
2764 *pdrv != NULL; pdrv++) {
2765 retval = tr_func(pdrv, arg);
2766
2767 if (retval == 0)
2768 return(retval);
2769 }
2770
2771 return(retval);
2772 }
2773
2774 static int
2775 xptpdperiphtraverse(struct periph_driver **pdrv,
2776 struct cam_periph *start_periph,
2777 xpt_periphfunc_t *tr_func, void *arg)
2778 {
2779 struct cam_periph *periph, *next_periph;
2780 int retval;
2781
2782 retval = 1;
2783
2784 for (periph = (start_periph ? start_periph :
2785 TAILQ_FIRST(&(*pdrv)->units)); periph != NULL;
2786 periph = next_periph) {
2787
2788 next_periph = TAILQ_NEXT(periph, unit_links);
2789
2790 retval = tr_func(periph, arg);
2791 if (retval == 0)
2792 return(retval);
2793 }
2794 return(retval);
2795 }
2796
2797 static int
2798 xptdefbusfunc(struct cam_eb *bus, 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_BUS) {
2805 xpt_busfunc_t *tr_func;
2806
2807 tr_func = (xpt_busfunc_t *)tr_config->tr_func;
2808
2809 return(tr_func(bus, tr_config->tr_arg));
2810 } else
2811 return(xpttargettraverse(bus, NULL, xptdeftargetfunc, arg));
2812 }
2813
2814 static int
2815 xptdeftargetfunc(struct cam_et *target, 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_TARGET) {
2822 xpt_targetfunc_t *tr_func;
2823
2824 tr_func = (xpt_targetfunc_t *)tr_config->tr_func;
2825
2826 return(tr_func(target, tr_config->tr_arg));
2827 } else
2828 return(xptdevicetraverse(target, NULL, xptdefdevicefunc, arg));
2829 }
2830
2831 static int
2832 xptdefdevicefunc(struct cam_ed *device, void *arg)
2833 {
2834 struct xpt_traverse_config *tr_config;
2835
2836 tr_config = (struct xpt_traverse_config *)arg;
2837
2838 if (tr_config->depth == XPT_DEPTH_DEVICE) {
2839 xpt_devicefunc_t *tr_func;
2840
2841 tr_func = (xpt_devicefunc_t *)tr_config->tr_func;
2842
2843 return(tr_func(device, tr_config->tr_arg));
2844 } else
2845 return(xptperiphtraverse(device, NULL, xptdefperiphfunc, arg));
2846 }
2847
2848 static int
2849 xptdefperiphfunc(struct cam_periph *periph, void *arg)
2850 {
2851 struct xpt_traverse_config *tr_config;
2852 xpt_periphfunc_t *tr_func;
2853
2854 tr_config = (struct xpt_traverse_config *)arg;
2855
2856 tr_func = (xpt_periphfunc_t *)tr_config->tr_func;
2857
2858 /*
2859 * Unlike the other default functions, we don't check for depth
2860 * here. The peripheral driver level is the last level in the EDT,
2861 * so if we're here, we should execute the function in question.
2862 */
2863 return(tr_func(periph, tr_config->tr_arg));
2864 }
2865
2866 /*
2867 * Execute the given function for every bus in the EDT.
2868 */
2869 static int
2870 xpt_for_all_busses(xpt_busfunc_t *tr_func, void *arg)
2871 {
2872 struct xpt_traverse_config tr_config;
2873
2874 tr_config.depth = XPT_DEPTH_BUS;
2875 tr_config.tr_func = tr_func;
2876 tr_config.tr_arg = arg;
2877
2878 return(xptbustraverse(NULL, xptdefbusfunc, &tr_config));
2879 }
2880
2881 #ifdef notusedyet
2882 /*
2883 * Execute the given function for every target in the EDT.
2884 */
2885 static int
2886 xpt_for_all_targets(xpt_targetfunc_t *tr_func, void *arg)
2887 {
2888 struct xpt_traverse_config tr_config;
2889
2890 tr_config.depth = XPT_DEPTH_TARGET;
2891 tr_config.tr_func = tr_func;
2892 tr_config.tr_arg = arg;
2893
2894 return(xptbustraverse(NULL, xptdefbusfunc, &tr_config));
2895 }
2896 #endif /* notusedyet */
2897
2898 /*
2899 * Execute the given function for every device in the EDT.
2900 */
2901 static int
2902 xpt_for_all_devices(xpt_devicefunc_t *tr_func, void *arg)
2903 {
2904 struct xpt_traverse_config tr_config;
2905
2906 tr_config.depth = XPT_DEPTH_DEVICE;
2907 tr_config.tr_func = tr_func;
2908 tr_config.tr_arg = arg;
2909
2910 return(xptbustraverse(NULL, xptdefbusfunc, &tr_config));
2911 }
2912
2913 #ifdef notusedyet
2914 /*
2915 * Execute the given function for every peripheral in the EDT.
2916 */
2917 static int
2918 xpt_for_all_periphs(xpt_periphfunc_t *tr_func, void *arg)
2919 {
2920 struct xpt_traverse_config tr_config;
2921
2922 tr_config.depth = XPT_DEPTH_PERIPH;
2923 tr_config.tr_func = tr_func;
2924 tr_config.tr_arg = arg;
2925
2926 return(xptbustraverse(NULL, xptdefbusfunc, &tr_config));
2927 }
2928 #endif /* notusedyet */
2929
2930 static int
2931 xptsetasyncfunc(struct cam_ed *device, void *arg)
2932 {
2933 struct cam_path path;
2934 struct ccb_getdev cgd;
2935 struct async_node *cur_entry;
2936
2937 cur_entry = (struct async_node *)arg;
2938
2939 /*
2940 * Don't report unconfigured devices (Wildcard devs,
2941 * devices only for target mode, device instances
2942 * that have been invalidated but are waiting for
2943 * their last reference count to be released).
2944 */
2945 if ((device->flags & CAM_DEV_UNCONFIGURED) != 0)
2946 return (1);
2947
2948 xpt_compile_path(&path,
2949 NULL,
2950 device->target->bus->path_id,
2951 device->target->target_id,
2952 device->lun_id);
2953 xpt_setup_ccb(&cgd.ccb_h, &path, /*priority*/1);
2954 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
2955 xpt_action((union ccb *)&cgd);
2956 cur_entry->callback(cur_entry->callback_arg,
2957 AC_FOUND_DEVICE,
2958 &path, &cgd);
2959 xpt_release_path(&path);
2960
2961 return(1);
2962 }
2963
2964 static int
2965 xptsetasyncbusfunc(struct cam_eb *bus, void *arg)
2966 {
2967 struct cam_path path;
2968 struct ccb_pathinq cpi;
2969 struct async_node *cur_entry;
2970
2971 cur_entry = (struct async_node *)arg;
2972
2973 xpt_compile_path(&path, /*periph*/NULL,
2974 bus->sim->path_id,
2975 CAM_TARGET_WILDCARD,
2976 CAM_LUN_WILDCARD);
2977 xpt_setup_ccb(&cpi.ccb_h, &path, /*priority*/1);
2978 cpi.ccb_h.func_code = XPT_PATH_INQ;
2979 xpt_action((union ccb *)&cpi);
2980 cur_entry->callback(cur_entry->callback_arg,
2981 AC_PATH_REGISTERED,
2982 &path, &cpi);
2983 xpt_release_path(&path);
2984
2985 return(1);
2986 }
2987
2988 void
2989 xpt_action(union ccb *start_ccb)
2990 {
2991 int iopl;
2992
2993 GIANT_REQUIRED;
2994
2995 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("xpt_action\n"));
2996
2997 start_ccb->ccb_h.status = CAM_REQ_INPROG;
2998
2999 iopl = splsoftcam();
3000 switch (start_ccb->ccb_h.func_code) {
3001 case XPT_SCSI_IO:
3002 {
3003 #ifdef CAM_NEW_TRAN_CODE
3004 struct cam_ed *device;
3005 #endif /* CAM_NEW_TRAN_CODE */
3006 #ifdef CAMDEBUG
3007 char cdb_str[(SCSI_MAX_CDBLEN * 3) + 1];
3008 struct cam_path *path;
3009
3010 path = start_ccb->ccb_h.path;
3011 #endif
3012
3013 /*
3014 * For the sake of compatibility with SCSI-1
3015 * devices that may not understand the identify
3016 * message, we include lun information in the
3017 * second byte of all commands. SCSI-1 specifies
3018 * that luns are a 3 bit value and reserves only 3
3019 * bits for lun information in the CDB. Later
3020 * revisions of the SCSI spec allow for more than 8
3021 * luns, but have deprecated lun information in the
3022 * CDB. So, if the lun won't fit, we must omit.
3023 *
3024 * Also be aware that during initial probing for devices,
3025 * the inquiry information is unknown but initialized to 0.
3026 * This means that this code will be exercised while probing
3027 * devices with an ANSI revision greater than 2.
3028 */
3029 #ifdef CAM_NEW_TRAN_CODE
3030 device = start_ccb->ccb_h.path->device;
3031 if (device->protocol_version <= SCSI_REV_2
3032 #else /* CAM_NEW_TRAN_CODE */
3033 if (SID_ANSI_REV(&start_ccb->ccb_h.path->device->inq_data) <= 2
3034 #endif /* CAM_NEW_TRAN_CODE */
3035 && start_ccb->ccb_h.target_lun < 8
3036 && (start_ccb->ccb_h.flags & CAM_CDB_POINTER) == 0) {
3037
3038 start_ccb->csio.cdb_io.cdb_bytes[1] |=
3039 start_ccb->ccb_h.target_lun << 5;
3040 }
3041 start_ccb->csio.scsi_status = SCSI_STATUS_OK;
3042 CAM_DEBUG(path, CAM_DEBUG_CDB,("%s. CDB: %s\n",
3043 scsi_op_desc(start_ccb->csio.cdb_io.cdb_bytes[0],
3044 &path->device->inq_data),
3045 scsi_cdb_string(start_ccb->csio.cdb_io.cdb_bytes,
3046 cdb_str, sizeof(cdb_str))));
3047 }
3048 /* FALLTHROUGH */
3049 case XPT_TARGET_IO:
3050 case XPT_CONT_TARGET_IO:
3051 start_ccb->csio.sense_resid = 0;
3052 start_ccb->csio.resid = 0;
3053 /* FALLTHROUGH */
3054 case XPT_RESET_DEV:
3055 case XPT_ENG_EXEC:
3056 {
3057 struct cam_path *path;
3058 int s;
3059 int runq;
3060
3061 path = start_ccb->ccb_h.path;
3062 s = splsoftcam();
3063
3064 cam_ccbq_insert_ccb(&path->device->ccbq, start_ccb);
3065 if (path->device->qfrozen_cnt == 0)
3066 runq = xpt_schedule_dev_sendq(path->bus, path->device);
3067 else
3068 runq = 0;
3069 splx(s);
3070 if (runq != 0)
3071 xpt_run_dev_sendq(path->bus);
3072 break;
3073 }
3074 case XPT_SET_TRAN_SETTINGS:
3075 {
3076 xpt_set_transfer_settings(&start_ccb->cts,
3077 start_ccb->ccb_h.path->device,
3078 /*async_update*/FALSE);
3079 break;
3080 }
3081 case XPT_CALC_GEOMETRY:
3082 {
3083 struct cam_sim *sim;
3084
3085 /* Filter out garbage */
3086 if (start_ccb->ccg.block_size == 0
3087 || start_ccb->ccg.volume_size == 0) {
3088 start_ccb->ccg.cylinders = 0;
3089 start_ccb->ccg.heads = 0;
3090 start_ccb->ccg.secs_per_track = 0;
3091 start_ccb->ccb_h.status = CAM_REQ_CMP;
3092 break;
3093 }
3094 #ifdef PC98
3095 /*
3096 * In a PC-98 system, geometry translation depens on
3097 * the "real" device geometry obtained from mode page 4.
3098 * SCSI geometry translation is performed in the
3099 * initialization routine of the SCSI BIOS and the result
3100 * stored in host memory. If the translation is available
3101 * in host memory, use it. If not, rely on the default
3102 * translation the device driver performs.
3103 */
3104 if (scsi_da_bios_params(&start_ccb->ccg) != 0) {
3105 start_ccb->ccb_h.status = CAM_REQ_CMP;
3106 break;
3107 }
3108 #endif
3109 sim = start_ccb->ccb_h.path->bus->sim;
3110 (*(sim->sim_action))(sim, start_ccb);
3111 break;
3112 }
3113 case XPT_ABORT:
3114 {
3115 union ccb* abort_ccb;
3116 int s;
3117
3118 abort_ccb = start_ccb->cab.abort_ccb;
3119 if (XPT_FC_IS_DEV_QUEUED(abort_ccb)) {
3120
3121 if (abort_ccb->ccb_h.pinfo.index >= 0) {
3122 struct cam_ccbq *ccbq;
3123
3124 ccbq = &abort_ccb->ccb_h.path->device->ccbq;
3125 cam_ccbq_remove_ccb(ccbq, abort_ccb);
3126 abort_ccb->ccb_h.status =
3127 CAM_REQ_ABORTED|CAM_DEV_QFRZN;
3128 xpt_freeze_devq(abort_ccb->ccb_h.path, 1);
3129 s = splcam();
3130 xpt_done(abort_ccb);
3131 splx(s);
3132 start_ccb->ccb_h.status = CAM_REQ_CMP;
3133 break;
3134 }
3135 if (abort_ccb->ccb_h.pinfo.index == CAM_UNQUEUED_INDEX
3136 && (abort_ccb->ccb_h.status & CAM_SIM_QUEUED) == 0) {
3137 /*
3138 * We've caught this ccb en route to
3139 * the SIM. Flag it for abort and the
3140 * SIM will do so just before starting
3141 * real work on the CCB.
3142 */
3143 abort_ccb->ccb_h.status =
3144 CAM_REQ_ABORTED|CAM_DEV_QFRZN;
3145 xpt_freeze_devq(abort_ccb->ccb_h.path, 1);
3146 start_ccb->ccb_h.status = CAM_REQ_CMP;
3147 break;
3148 }
3149 }
3150 if (XPT_FC_IS_QUEUED(abort_ccb)
3151 && (abort_ccb->ccb_h.pinfo.index == CAM_DONEQ_INDEX)) {
3152 /*
3153 * It's already completed but waiting
3154 * for our SWI to get to it.
3155 */
3156 start_ccb->ccb_h.status = CAM_UA_ABORT;
3157 break;
3158 }
3159 /*
3160 * If we weren't able to take care of the abort request
3161 * in the XPT, pass the request down to the SIM for processing.
3162 */
3163 }
3164 /* FALLTHROUGH */
3165 case XPT_ACCEPT_TARGET_IO:
3166 case XPT_EN_LUN:
3167 case XPT_IMMED_NOTIFY:
3168 case XPT_NOTIFY_ACK:
3169 case XPT_GET_TRAN_SETTINGS:
3170 case XPT_RESET_BUS:
3171 {
3172 struct cam_sim *sim;
3173
3174 sim = start_ccb->ccb_h.path->bus->sim;
3175 (*(sim->sim_action))(sim, start_ccb);
3176 break;
3177 }
3178 case XPT_PATH_INQ:
3179 {
3180 struct cam_sim *sim;
3181
3182 sim = start_ccb->ccb_h.path->bus->sim;
3183 (*(sim->sim_action))(sim, start_ccb);
3184 break;
3185 }
3186 case XPT_PATH_STATS:
3187 start_ccb->cpis.last_reset =
3188 start_ccb->ccb_h.path->bus->last_reset;
3189 start_ccb->ccb_h.status = CAM_REQ_CMP;
3190 break;
3191 case XPT_GDEV_TYPE:
3192 {
3193 struct cam_ed *dev;
3194 int s;
3195
3196 dev = start_ccb->ccb_h.path->device;
3197 s = splcam();
3198 if ((dev->flags & CAM_DEV_UNCONFIGURED) != 0) {
3199 start_ccb->ccb_h.status = CAM_DEV_NOT_THERE;
3200 } else {
3201 struct ccb_getdev *cgd;
3202 struct cam_eb *bus;
3203 struct cam_et *tar;
3204
3205 cgd = &start_ccb->cgd;
3206 bus = cgd->ccb_h.path->bus;
3207 tar = cgd->ccb_h.path->target;
3208 cgd->inq_data = dev->inq_data;
3209 cgd->ccb_h.status = CAM_REQ_CMP;
3210 cgd->serial_num_len = dev->serial_num_len;
3211 if ((dev->serial_num_len > 0)
3212 && (dev->serial_num != NULL))
3213 bcopy(dev->serial_num, cgd->serial_num,
3214 dev->serial_num_len);
3215 }
3216 splx(s);
3217 break;
3218 }
3219 case XPT_GDEV_STATS:
3220 {
3221 struct cam_ed *dev;
3222 int s;
3223
3224 dev = start_ccb->ccb_h.path->device;
3225 s = splcam();
3226 if ((dev->flags & CAM_DEV_UNCONFIGURED) != 0) {
3227 start_ccb->ccb_h.status = CAM_DEV_NOT_THERE;
3228 } else {
3229 struct ccb_getdevstats *cgds;
3230 struct cam_eb *bus;
3231 struct cam_et *tar;
3232
3233 cgds = &start_ccb->cgds;
3234 bus = cgds->ccb_h.path->bus;
3235 tar = cgds->ccb_h.path->target;
3236 cgds->dev_openings = dev->ccbq.dev_openings;
3237 cgds->dev_active = dev->ccbq.dev_active;
3238 cgds->devq_openings = dev->ccbq.devq_openings;
3239 cgds->devq_queued = dev->ccbq.queue.entries;
3240 cgds->held = dev->ccbq.held;
3241 cgds->last_reset = tar->last_reset;
3242 cgds->maxtags = dev->quirk->maxtags;
3243 cgds->mintags = dev->quirk->mintags;
3244 if (timevalcmp(&tar->last_reset, &bus->last_reset, <))
3245 cgds->last_reset = bus->last_reset;
3246 cgds->ccb_h.status = CAM_REQ_CMP;
3247 }
3248 splx(s);
3249 break;
3250 }
3251 case XPT_GDEVLIST:
3252 {
3253 struct cam_periph *nperiph;
3254 struct periph_list *periph_head;
3255 struct ccb_getdevlist *cgdl;
3256 u_int i;
3257 int s;
3258 struct cam_ed *device;
3259 int found;
3260
3261
3262 found = 0;
3263
3264 /*
3265 * Don't want anyone mucking with our data.
3266 */
3267 s = splcam();
3268 device = start_ccb->ccb_h.path->device;
3269 periph_head = &device->periphs;
3270 cgdl = &start_ccb->cgdl;
3271
3272 /*
3273 * Check and see if the list has changed since the user
3274 * last requested a list member. If so, tell them that the
3275 * list has changed, and therefore they need to start over
3276 * from the beginning.
3277 */
3278 if ((cgdl->index != 0) &&
3279 (cgdl->generation != device->generation)) {
3280 cgdl->status = CAM_GDEVLIST_LIST_CHANGED;
3281 splx(s);
3282 break;
3283 }
3284
3285 /*
3286 * Traverse the list of peripherals and attempt to find
3287 * the requested peripheral.
3288 */
3289 for (nperiph = SLIST_FIRST(periph_head), i = 0;
3290 (nperiph != NULL) && (i <= cgdl->index);
3291 nperiph = SLIST_NEXT(nperiph, periph_links), i++) {
3292 if (i == cgdl->index) {
3293 strncpy(cgdl->periph_name,
3294 nperiph->periph_name,
3295 DEV_IDLEN);
3296 cgdl->unit_number = nperiph->unit_number;
3297 found = 1;
3298 }
3299 }
3300 if (found == 0) {
3301 cgdl->status = CAM_GDEVLIST_ERROR;
3302 splx(s);
3303 break;
3304 }
3305
3306 if (nperiph == NULL)
3307 cgdl->status = CAM_GDEVLIST_LAST_DEVICE;
3308 else
3309 cgdl->status = CAM_GDEVLIST_MORE_DEVS;
3310
3311 cgdl->index++;
3312 cgdl->generation = device->generation;
3313
3314 splx(s);
3315 cgdl->ccb_h.status = CAM_REQ_CMP;
3316 break;
3317 }
3318 case XPT_DEV_MATCH:
3319 {
3320 int s;
3321 dev_pos_type position_type;
3322 struct ccb_dev_match *cdm;
3323
3324 cdm = &start_ccb->cdm;
3325
3326 /*
3327 * Prevent EDT changes while we traverse it.
3328 */
3329 s = splcam();
3330 /*
3331 * There are two ways of getting at information in the EDT.
3332 * The first way is via the primary EDT tree. It starts
3333 * with a list of busses, then a list of targets on a bus,
3334 * then devices/luns on a target, and then peripherals on a
3335 * device/lun. The "other" way is by the peripheral driver
3336 * lists. The peripheral driver lists are organized by
3337 * peripheral driver. (obviously) So it makes sense to
3338 * use the peripheral driver list if the user is looking
3339 * for something like "da1", or all "da" devices. If the
3340 * user is looking for something on a particular bus/target
3341 * or lun, it's generally better to go through the EDT tree.
3342 */
3343
3344 if (cdm->pos.position_type != CAM_DEV_POS_NONE)
3345 position_type = cdm->pos.position_type;
3346 else {
3347 u_int i;
3348
3349 position_type = CAM_DEV_POS_NONE;
3350
3351 for (i = 0; i < cdm->num_patterns; i++) {
3352 if ((cdm->patterns[i].type == DEV_MATCH_BUS)
3353 ||(cdm->patterns[i].type == DEV_MATCH_DEVICE)){
3354 position_type = CAM_DEV_POS_EDT;
3355 break;
3356 }
3357 }
3358
3359 if (cdm->num_patterns == 0)
3360 position_type = CAM_DEV_POS_EDT;
3361 else if (position_type == CAM_DEV_POS_NONE)
3362 position_type = CAM_DEV_POS_PDRV;
3363 }
3364
3365 switch(position_type & CAM_DEV_POS_TYPEMASK) {
3366 case CAM_DEV_POS_EDT:
3367 xptedtmatch(cdm);
3368 break;
3369 case CAM_DEV_POS_PDRV:
3370 xptperiphlistmatch(cdm);
3371 break;
3372 default:
3373 cdm->status = CAM_DEV_MATCH_ERROR;
3374 break;
3375 }
3376
3377 splx(s);
3378
3379 if (cdm->status == CAM_DEV_MATCH_ERROR)
3380 start_ccb->ccb_h.status = CAM_REQ_CMP_ERR;
3381 else
3382 start_ccb->ccb_h.status = CAM_REQ_CMP;
3383
3384 break;
3385 }
3386 case XPT_SASYNC_CB:
3387 {
3388 struct ccb_setasync *csa;
3389 struct async_node *cur_entry;
3390 struct async_list *async_head;
3391 u_int32_t added;
3392 int s;
3393
3394 csa = &start_ccb->csa;
3395 added = csa->event_enable;
3396 async_head = &csa->ccb_h.path->device->asyncs;
3397
3398 /*
3399 * If there is already an entry for us, simply
3400 * update it.
3401 */
3402 s = splcam();
3403 cur_entry = SLIST_FIRST(async_head);
3404 while (cur_entry != NULL) {
3405 if ((cur_entry->callback_arg == csa->callback_arg)
3406 && (cur_entry->callback == csa->callback))
3407 break;
3408 cur_entry = SLIST_NEXT(cur_entry, links);
3409 }
3410
3411 if (cur_entry != NULL) {
3412 /*
3413 * If the request has no flags set,
3414 * remove the entry.
3415 */
3416 added &= ~cur_entry->event_enable;
3417 if (csa->event_enable == 0) {
3418 SLIST_REMOVE(async_head, cur_entry,
3419 async_node, links);
3420 csa->ccb_h.path->device->refcount--;
3421 free(cur_entry, M_CAMXPT);
3422 } else {
3423 cur_entry->event_enable = csa->event_enable;
3424 }
3425 } else {
3426 cur_entry = malloc(sizeof(*cur_entry), M_CAMXPT,
3427 M_NOWAIT);
3428 if (cur_entry == NULL) {
3429 splx(s);
3430 csa->ccb_h.status = CAM_RESRC_UNAVAIL;
3431 break;
3432 }
3433 cur_entry->event_enable = csa->event_enable;
3434 cur_entry->callback_arg = csa->callback_arg;
3435 cur_entry->callback = csa->callback;
3436 SLIST_INSERT_HEAD(async_head, cur_entry, links);
3437 csa->ccb_h.path->device->refcount++;
3438 }
3439
3440 if ((added & AC_FOUND_DEVICE) != 0) {
3441 /*
3442 * Get this peripheral up to date with all
3443 * the currently existing devices.
3444 */
3445 xpt_for_all_devices(xptsetasyncfunc, cur_entry);
3446 }
3447 if ((added & AC_PATH_REGISTERED) != 0) {
3448 /*
3449 * Get this peripheral up to date with all
3450 * the currently existing busses.
3451 */
3452 xpt_for_all_busses(xptsetasyncbusfunc, cur_entry);
3453 }
3454 splx(s);
3455 start_ccb->ccb_h.status = CAM_REQ_CMP;
3456 break;
3457 }
3458 case XPT_REL_SIMQ:
3459 {
3460 struct ccb_relsim *crs;
3461 struct cam_ed *dev;
3462 int s;
3463
3464 crs = &start_ccb->crs;
3465 dev = crs->ccb_h.path->device;
3466 if (dev == NULL) {
3467
3468 crs->ccb_h.status = CAM_DEV_NOT_THERE;
3469 break;
3470 }
3471
3472 s = splcam();
3473
3474 if ((crs->release_flags & RELSIM_ADJUST_OPENINGS) != 0) {
3475
3476 if ((dev->inq_data.flags & SID_CmdQue) != 0) {
3477
3478 /* Don't ever go below one opening */
3479 if (crs->openings > 0) {
3480 xpt_dev_ccbq_resize(crs->ccb_h.path,
3481 crs->openings);
3482
3483 if (bootverbose) {
3484 xpt_print_path(crs->ccb_h.path);
3485 printf("tagged openings "
3486 "now %d\n",
3487 crs->openings);
3488 }
3489 }
3490 }
3491 }
3492
3493 if ((crs->release_flags & RELSIM_RELEASE_AFTER_TIMEOUT) != 0) {
3494
3495 if ((dev->flags & CAM_DEV_REL_TIMEOUT_PENDING) != 0) {
3496
3497 /*
3498 * Just extend the old timeout and decrement
3499 * the freeze count so that a single timeout
3500 * is sufficient for releasing the queue.
3501 */
3502 start_ccb->ccb_h.flags &= ~CAM_DEV_QFREEZE;
3503 untimeout(xpt_release_devq_timeout,
3504 dev, dev->c_handle);
3505 } else {
3506
3507 start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
3508 }
3509
3510 dev->c_handle =
3511 timeout(xpt_release_devq_timeout,
3512 dev,
3513 (crs->release_timeout * hz) / 1000);
3514
3515 dev->flags |= CAM_DEV_REL_TIMEOUT_PENDING;
3516
3517 }
3518
3519 if ((crs->release_flags & RELSIM_RELEASE_AFTER_CMDCMPLT) != 0) {
3520
3521 if ((dev->flags & CAM_DEV_REL_ON_COMPLETE) != 0) {
3522 /*
3523 * Decrement the freeze count so that a single
3524 * completion is still sufficient to unfreeze
3525 * the queue.
3526 */
3527 start_ccb->ccb_h.flags &= ~CAM_DEV_QFREEZE;
3528 } else {
3529
3530 dev->flags |= CAM_DEV_REL_ON_COMPLETE;
3531 start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
3532 }
3533 }
3534
3535 if ((crs->release_flags & RELSIM_RELEASE_AFTER_QEMPTY) != 0) {
3536
3537 if ((dev->flags & CAM_DEV_REL_ON_QUEUE_EMPTY) != 0
3538 || (dev->ccbq.dev_active == 0)) {
3539
3540 start_ccb->ccb_h.flags &= ~CAM_DEV_QFREEZE;
3541 } else {
3542
3543 dev->flags |= CAM_DEV_REL_ON_QUEUE_EMPTY;
3544 start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
3545 }
3546 }
3547 splx(s);
3548
3549 if ((start_ccb->ccb_h.flags & CAM_DEV_QFREEZE) == 0) {
3550
3551 xpt_release_devq(crs->ccb_h.path, /*count*/1,
3552 /*run_queue*/TRUE);
3553 }
3554 start_ccb->crs.qfrozen_cnt = dev->qfrozen_cnt;
3555 start_ccb->ccb_h.status = CAM_REQ_CMP;
3556 break;
3557 }
3558 case XPT_SCAN_BUS:
3559 xpt_scan_bus(start_ccb->ccb_h.path->periph, start_ccb);
3560 break;
3561 case XPT_SCAN_LUN:
3562 xpt_scan_lun(start_ccb->ccb_h.path->periph,
3563 start_ccb->ccb_h.path, start_ccb->crcn.flags,
3564 start_ccb);
3565 break;
3566 case XPT_DEBUG: {
3567 #ifdef CAMDEBUG
3568 int s;
3569
3570 s = splcam();
3571 #ifdef CAM_DEBUG_DELAY
3572 cam_debug_delay = CAM_DEBUG_DELAY;
3573 #endif
3574 cam_dflags = start_ccb->cdbg.flags;
3575 if (cam_dpath != NULL) {
3576 xpt_free_path(cam_dpath);
3577 cam_dpath = NULL;
3578 }
3579
3580 if (cam_dflags != CAM_DEBUG_NONE) {
3581 if (xpt_create_path(&cam_dpath, xpt_periph,
3582 start_ccb->ccb_h.path_id,
3583 start_ccb->ccb_h.target_id,
3584 start_ccb->ccb_h.target_lun) !=
3585 CAM_REQ_CMP) {
3586 start_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
3587 cam_dflags = CAM_DEBUG_NONE;
3588 } else {
3589 start_ccb->ccb_h.status = CAM_REQ_CMP;
3590 xpt_print_path(cam_dpath);
3591 printf("debugging flags now %x\n", cam_dflags);
3592 }
3593 } else {
3594 cam_dpath = NULL;
3595 start_ccb->ccb_h.status = CAM_REQ_CMP;
3596 }
3597 splx(s);
3598 #else /* !CAMDEBUG */
3599 start_ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
3600 #endif /* CAMDEBUG */
3601 break;
3602 }
3603 case XPT_NOOP:
3604 if ((start_ccb->ccb_h.flags & CAM_DEV_QFREEZE) != 0)
3605 xpt_freeze_devq(start_ccb->ccb_h.path, 1);
3606 start_ccb->ccb_h.status = CAM_REQ_CMP;
3607 break;
3608 default:
3609 case XPT_SDEV_TYPE:
3610 case XPT_TERM_IO:
3611 case XPT_ENG_INQ:
3612 /* XXX Implement */
3613 start_ccb->ccb_h.status = CAM_PROVIDE_FAIL;
3614 break;
3615 }
3616 splx(iopl);
3617 }
3618
3619 void
3620 xpt_polled_action(union ccb *start_ccb)
3621 {
3622 int s;
3623 u_int32_t timeout;
3624 struct cam_sim *sim;
3625 struct cam_devq *devq;
3626 struct cam_ed *dev;
3627
3628 GIANT_REQUIRED;
3629
3630 timeout = start_ccb->ccb_h.timeout;
3631 sim = start_ccb->ccb_h.path->bus->sim;
3632 devq = sim->devq;
3633 dev = start_ccb->ccb_h.path->device;
3634
3635 s = splcam();
3636
3637 /*
3638 * Steal an opening so that no other queued requests
3639 * can get it before us while we simulate interrupts.
3640 */
3641 dev->ccbq.devq_openings--;
3642 dev->ccbq.dev_openings--;
3643
3644 while((devq->send_openings <= 0 || dev->ccbq.dev_openings < 0)
3645 && (--timeout > 0)) {
3646 DELAY(1000);
3647 (*(sim->sim_poll))(sim);
3648 camisr(&cam_bioq);
3649 }
3650
3651 dev->ccbq.devq_openings++;
3652 dev->ccbq.dev_openings++;
3653
3654 if (timeout != 0) {
3655 xpt_action(start_ccb);
3656 while(--timeout > 0) {
3657 (*(sim->sim_poll))(sim);
3658 camisr(&cam_bioq);
3659 if ((start_ccb->ccb_h.status & CAM_STATUS_MASK)
3660 != CAM_REQ_INPROG)
3661 break;
3662 DELAY(1000);
3663 }
3664 if (timeout == 0) {
3665 /*
3666 * XXX Is it worth adding a sim_timeout entry
3667 * point so we can attempt recovery? If
3668 * this is only used for dumps, I don't think
3669 * it is.
3670 */
3671 start_ccb->ccb_h.status = CAM_CMD_TIMEOUT;
3672 }
3673 } else {
3674 start_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
3675 }
3676 splx(s);
3677 }
3678
3679 /*
3680 * Schedule a peripheral driver to receive a ccb when it's
3681 * target device has space for more transactions.
3682 */
3683 void
3684 xpt_schedule(struct cam_periph *perph, u_int32_t new_priority)
3685 {
3686 struct cam_ed *device;
3687 int s;
3688 int runq;
3689
3690 GIANT_REQUIRED;
3691
3692 CAM_DEBUG(perph->path, CAM_DEBUG_TRACE, ("xpt_schedule\n"));
3693 device = perph->path->device;
3694 s = splsoftcam();
3695 if (periph_is_queued(perph)) {
3696 /* Simply reorder based on new priority */
3697 CAM_DEBUG(perph->path, CAM_DEBUG_SUBTRACE,
3698 (" change priority to %d\n", new_priority));
3699 if (new_priority < perph->pinfo.priority) {
3700 camq_change_priority(&device->drvq,
3701 perph->pinfo.index,
3702 new_priority);
3703 }
3704 runq = 0;
3705 } else {
3706 /* New entry on the queue */
3707 CAM_DEBUG(perph->path, CAM_DEBUG_SUBTRACE,
3708 (" added periph to queue\n"));
3709 perph->pinfo.priority = new_priority;
3710 perph->pinfo.generation = ++device->drvq.generation;
3711 camq_insert(&device->drvq, &perph->pinfo);
3712 runq = xpt_schedule_dev_allocq(perph->path->bus, device);
3713 }
3714 splx(s);
3715 if (runq != 0) {
3716 CAM_DEBUG(perph->path, CAM_DEBUG_SUBTRACE,
3717 (" calling xpt_run_devq\n"));
3718 xpt_run_dev_allocq(perph->path->bus);
3719 }
3720 }
3721
3722
3723 /*
3724 * Schedule a device to run on a given queue.
3725 * If the device was inserted as a new entry on the queue,
3726 * return 1 meaning the device queue should be run. If we
3727 * were already queued, implying someone else has already
3728 * started the queue, return 0 so the caller doesn't attempt
3729 * to run the queue. Must be run at either splsoftcam
3730 * (or splcam since that encompases splsoftcam).
3731 */
3732 static int
3733 xpt_schedule_dev(struct camq *queue, cam_pinfo *pinfo,
3734 u_int32_t new_priority)
3735 {
3736 int retval;
3737 u_int32_t old_priority;
3738
3739 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_schedule_dev\n"));
3740
3741 old_priority = pinfo->priority;
3742
3743 /*
3744 * Are we already queued?
3745 */
3746 if (pinfo->index != CAM_UNQUEUED_INDEX) {
3747 /* Simply reorder based on new priority */
3748 if (new_priority < old_priority) {
3749 camq_change_priority(queue, pinfo->index,
3750 new_priority);
3751 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3752 ("changed priority to %d\n",
3753 new_priority));
3754 }
3755 retval = 0;
3756 } else {
3757 /* New entry on the queue */
3758 if (new_priority < old_priority)
3759 pinfo->priority = new_priority;
3760
3761 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3762 ("Inserting onto queue\n"));
3763 pinfo->generation = ++queue->generation;
3764 camq_insert(queue, pinfo);
3765 retval = 1;
3766 }
3767 return (retval);
3768 }
3769
3770 static void
3771 xpt_run_dev_allocq(struct cam_eb *bus)
3772 {
3773 struct cam_devq *devq;
3774 int s;
3775
3776 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_run_dev_allocq\n"));
3777 devq = bus->sim->devq;
3778
3779 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3780 (" qfrozen_cnt == 0x%x, entries == %d, "
3781 "openings == %d, active == %d\n",
3782 devq->alloc_queue.qfrozen_cnt,
3783 devq->alloc_queue.entries,
3784 devq->alloc_openings,
3785 devq->alloc_active));
3786
3787 s = splsoftcam();
3788 devq->alloc_queue.qfrozen_cnt++;
3789 while ((devq->alloc_queue.entries > 0)
3790 && (devq->alloc_openings > 0)
3791 && (devq->alloc_queue.qfrozen_cnt <= 1)) {
3792 struct cam_ed_qinfo *qinfo;
3793 struct cam_ed *device;
3794 union ccb *work_ccb;
3795 struct cam_periph *drv;
3796 struct camq *drvq;
3797
3798 qinfo = (struct cam_ed_qinfo *)camq_remove(&devq->alloc_queue,
3799 CAMQ_HEAD);
3800 device = qinfo->device;
3801
3802 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3803 ("running device %p\n", device));
3804
3805 drvq = &device->drvq;
3806
3807 #ifdef CAMDEBUG
3808 if (drvq->entries <= 0) {
3809 panic("xpt_run_dev_allocq: "
3810 "Device on queue without any work to do");
3811 }
3812 #endif
3813 if ((work_ccb = xpt_get_ccb(device)) != NULL) {
3814 devq->alloc_openings--;
3815 devq->alloc_active++;
3816 drv = (struct cam_periph*)camq_remove(drvq, CAMQ_HEAD);
3817 splx(s);
3818 xpt_setup_ccb(&work_ccb->ccb_h, drv->path,
3819 drv->pinfo.priority);
3820 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3821 ("calling periph start\n"));
3822 drv->periph_start(drv, work_ccb);
3823 } else {
3824 /*
3825 * Malloc failure in alloc_ccb
3826 */
3827 /*
3828 * XXX add us to a list to be run from free_ccb
3829 * if we don't have any ccbs active on this
3830 * device queue otherwise we may never get run
3831 * again.
3832 */
3833 break;
3834 }
3835
3836 /* Raise IPL for possible insertion and test at top of loop */
3837 s = splsoftcam();
3838
3839 if (drvq->entries > 0) {
3840 /* We have more work. Attempt to reschedule */
3841 xpt_schedule_dev_allocq(bus, device);
3842 }
3843 }
3844 devq->alloc_queue.qfrozen_cnt--;
3845 splx(s);
3846 }
3847
3848 static void
3849 xpt_run_dev_sendq(struct cam_eb *bus)
3850 {
3851 struct cam_devq *devq;
3852 int s;
3853
3854 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_run_dev_sendq\n"));
3855
3856 devq = bus->sim->devq;
3857
3858 s = splcam();
3859 devq->send_queue.qfrozen_cnt++;
3860 splx(s);
3861 s = splsoftcam();
3862 while ((devq->send_queue.entries > 0)
3863 && (devq->send_openings > 0)) {
3864 struct cam_ed_qinfo *qinfo;
3865 struct cam_ed *device;
3866 union ccb *work_ccb;
3867 struct cam_sim *sim;
3868 int ospl;
3869
3870 ospl = splcam();
3871 if (devq->send_queue.qfrozen_cnt > 1) {
3872 splx(ospl);
3873 break;
3874 }
3875
3876 qinfo = (struct cam_ed_qinfo *)camq_remove(&devq->send_queue,
3877 CAMQ_HEAD);
3878 device = qinfo->device;
3879
3880 /*
3881 * If the device has been "frozen", don't attempt
3882 * to run it.
3883 */
3884 if (device->qfrozen_cnt > 0) {
3885 splx(ospl);
3886 continue;
3887 }
3888
3889 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3890 ("running device %p\n", device));
3891
3892 work_ccb = cam_ccbq_peek_ccb(&device->ccbq, CAMQ_HEAD);
3893 if (work_ccb == NULL) {
3894 printf("device on run queue with no ccbs???\n");
3895 splx(ospl);
3896 continue;
3897 }
3898
3899 if ((work_ccb->ccb_h.flags & CAM_HIGH_POWER) != 0) {
3900
3901 if (num_highpower <= 0) {
3902 /*
3903 * We got a high power command, but we
3904 * don't have any available slots. Freeze
3905 * the device queue until we have a slot
3906 * available.
3907 */
3908 device->qfrozen_cnt++;
3909 STAILQ_INSERT_TAIL(&highpowerq,
3910 &work_ccb->ccb_h,
3911 xpt_links.stqe);
3912
3913 splx(ospl);
3914 continue;
3915 } else {
3916 /*
3917 * Consume a high power slot while
3918 * this ccb runs.
3919 */
3920 num_highpower--;
3921 }
3922 }
3923 devq->active_dev = device;
3924 cam_ccbq_remove_ccb(&device->ccbq, work_ccb);
3925
3926 cam_ccbq_send_ccb(&device->ccbq, work_ccb);
3927 splx(ospl);
3928
3929 devq->send_openings--;
3930 devq->send_active++;
3931
3932 if (device->ccbq.queue.entries > 0)
3933 xpt_schedule_dev_sendq(bus, device);
3934
3935 if (work_ccb && (work_ccb->ccb_h.flags & CAM_DEV_QFREEZE) != 0){
3936 /*
3937 * The client wants to freeze the queue
3938 * after this CCB is sent.
3939 */
3940 ospl = splcam();
3941 device->qfrozen_cnt++;
3942 splx(ospl);
3943 }
3944
3945 splx(s);
3946
3947 /* In Target mode, the peripheral driver knows best... */
3948 if (work_ccb->ccb_h.func_code == XPT_SCSI_IO) {
3949 if ((device->inq_flags & SID_CmdQue) != 0
3950 && work_ccb->csio.tag_action != CAM_TAG_ACTION_NONE)
3951 work_ccb->ccb_h.flags |= CAM_TAG_ACTION_VALID;
3952 else
3953 /*
3954 * Clear this in case of a retried CCB that
3955 * failed due to a rejected tag.
3956 */
3957 work_ccb->ccb_h.flags &= ~CAM_TAG_ACTION_VALID;
3958 }
3959
3960 /*
3961 * Device queues can be shared among multiple sim instances
3962 * that reside on different busses. Use the SIM in the queue
3963 * CCB's path, rather than the one in the bus that was passed
3964 * into this function.
3965 */
3966 sim = work_ccb->ccb_h.path->bus->sim;
3967 (*(sim->sim_action))(sim, work_ccb);
3968
3969 ospl = splcam();
3970 devq->active_dev = NULL;
3971 splx(ospl);
3972 /* Raise IPL for possible insertion and test at top of loop */
3973 s = splsoftcam();
3974 }
3975 splx(s);
3976 s = splcam();
3977 devq->send_queue.qfrozen_cnt--;
3978 splx(s);
3979 }
3980
3981 /*
3982 * This function merges stuff from the slave ccb into the master ccb, while
3983 * keeping important fields in the master ccb constant.
3984 */
3985 void
3986 xpt_merge_ccb(union ccb *master_ccb, union ccb *slave_ccb)
3987 {
3988 GIANT_REQUIRED;
3989
3990 /*
3991 * Pull fields that are valid for peripheral drivers to set
3992 * into the master CCB along with the CCB "payload".
3993 */
3994 master_ccb->ccb_h.retry_count = slave_ccb->ccb_h.retry_count;
3995 master_ccb->ccb_h.func_code = slave_ccb->ccb_h.func_code;
3996 master_ccb->ccb_h.timeout = slave_ccb->ccb_h.timeout;
3997 master_ccb->ccb_h.flags = slave_ccb->ccb_h.flags;
3998 bcopy(&(&slave_ccb->ccb_h)[1], &(&master_ccb->ccb_h)[1],
3999 sizeof(union ccb) - sizeof(struct ccb_hdr));
4000 }
4001
4002 void
4003 xpt_setup_ccb(struct ccb_hdr *ccb_h, struct cam_path *path, u_int32_t priority)
4004 {
4005 GIANT_REQUIRED;
4006
4007 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_setup_ccb\n"));
4008 ccb_h->pinfo.priority = priority;
4009 ccb_h->path = path;
4010 ccb_h->path_id = path->bus->path_id;
4011 if (path->target)
4012 ccb_h->target_id = path->target->target_id;
4013 else
4014 ccb_h->target_id = CAM_TARGET_WILDCARD;
4015 if (path->device) {
4016 ccb_h->target_lun = path->device->lun_id;
4017 ccb_h->pinfo.generation = ++path->device->ccbq.queue.generation;
4018 } else {
4019 ccb_h->target_lun = CAM_TARGET_WILDCARD;
4020 }
4021 ccb_h->pinfo.index = CAM_UNQUEUED_INDEX;
4022 ccb_h->flags = 0;
4023 }
4024
4025 /* Path manipulation functions */
4026 cam_status
4027 xpt_create_path(struct cam_path **new_path_ptr, struct cam_periph *perph,
4028 path_id_t path_id, target_id_t target_id, lun_id_t lun_id)
4029 {
4030 struct cam_path *path;
4031 cam_status status;
4032
4033 GIANT_REQUIRED;
4034
4035 path = (struct cam_path *)malloc(sizeof(*path), M_CAMXPT, M_NOWAIT);
4036
4037 if (path == NULL) {
4038 status = CAM_RESRC_UNAVAIL;
4039 return(status);
4040 }
4041 status = xpt_compile_path(path, perph, path_id, target_id, lun_id);
4042 if (status != CAM_REQ_CMP) {
4043 free(path, M_CAMXPT);
4044 path = NULL;
4045 }
4046 *new_path_ptr = path;
4047 return (status);
4048 }
4049
4050 static cam_status
4051 xpt_compile_path(struct cam_path *new_path, struct cam_periph *perph,
4052 path_id_t path_id, target_id_t target_id, lun_id_t lun_id)
4053 {
4054 struct cam_eb *bus;
4055 struct cam_et *target;
4056 struct cam_ed *device;
4057 cam_status status;
4058 int s;
4059
4060 status = CAM_REQ_CMP; /* Completed without error */
4061 target = NULL; /* Wildcarded */
4062 device = NULL; /* Wildcarded */
4063
4064 /*
4065 * We will potentially modify the EDT, so block interrupts
4066 * that may attempt to create cam paths.
4067 */
4068 s = splcam();
4069 bus = xpt_find_bus(path_id);
4070 if (bus == NULL) {
4071 status = CAM_PATH_INVALID;
4072 } else {
4073 target = xpt_find_target(bus, target_id);
4074 if (target == NULL) {
4075 /* Create one */
4076 struct cam_et *new_target;
4077
4078 new_target = xpt_alloc_target(bus, target_id);
4079 if (new_target == NULL) {
4080 status = CAM_RESRC_UNAVAIL;
4081 } else {
4082 target = new_target;
4083 }
4084 }
4085 if (target != NULL) {
4086 device = xpt_find_device(target, lun_id);
4087 if (device == NULL) {
4088 /* Create one */
4089 struct cam_ed *new_device;
4090
4091 new_device = xpt_alloc_device(bus,
4092 target,
4093 lun_id);
4094 if (new_device == NULL) {
4095 status = CAM_RESRC_UNAVAIL;
4096 } else {
4097 device = new_device;
4098 }
4099 }
4100 }
4101 }
4102 splx(s);
4103
4104 /*
4105 * Only touch the user's data if we are successful.
4106 */
4107 if (status == CAM_REQ_CMP) {
4108 new_path->periph = perph;
4109 new_path->bus = bus;
4110 new_path->target = target;
4111 new_path->device = device;
4112 CAM_DEBUG(new_path, CAM_DEBUG_TRACE, ("xpt_compile_path\n"));
4113 } else {
4114 if (device != NULL)
4115 xpt_release_device(bus, target, device);
4116 if (target != NULL)
4117 xpt_release_target(bus, target);
4118 if (bus != NULL)
4119 xpt_release_bus(bus);
4120 }
4121 return (status);
4122 }
4123
4124 static void
4125 xpt_release_path(struct cam_path *path)
4126 {
4127 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_release_path\n"));
4128 if (path->device != NULL) {
4129 xpt_release_device(path->bus, path->target, path->device);
4130 path->device = NULL;
4131 }
4132 if (path->target != NULL) {
4133 xpt_release_target(path->bus, path->target);
4134 path->target = NULL;
4135 }
4136 if (path->bus != NULL) {
4137 xpt_release_bus(path->bus);
4138 path->bus = NULL;
4139 }
4140 }
4141
4142 void
4143 xpt_free_path(struct cam_path *path)
4144 {
4145 GIANT_REQUIRED;
4146
4147 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_free_path\n"));
4148 xpt_release_path(path);
4149 free(path, M_CAMXPT);
4150 }
4151
4152
4153 /*
4154 * Return -1 for failure, 0 for exact match, 1 for match with wildcards
4155 * in path1, 2 for match with wildcards in path2.
4156 */
4157 int
4158 xpt_path_comp(struct cam_path *path1, struct cam_path *path2)
4159 {
4160 GIANT_REQUIRED;
4161
4162 int retval = 0;
4163
4164 if (path1->bus != path2->bus) {
4165 if (path1->bus->path_id == CAM_BUS_WILDCARD)
4166 retval = 1;
4167 else if (path2->bus->path_id == CAM_BUS_WILDCARD)
4168 retval = 2;
4169 else
4170 return (-1);
4171 }
4172 if (path1->target != path2->target) {
4173 if (path1->target->target_id == CAM_TARGET_WILDCARD) {
4174 if (retval == 0)
4175 retval = 1;
4176 } else if (path2->target->target_id == CAM_TARGET_WILDCARD)
4177 retval = 2;
4178 else
4179 return (-1);
4180 }
4181 if (path1->device != path2->device) {
4182 if (path1->device->lun_id == CAM_LUN_WILDCARD) {
4183 if (retval == 0)
4184 retval = 1;
4185 } else if (path2->device->lun_id == CAM_LUN_WILDCARD)
4186 retval = 2;
4187 else
4188 return (-1);
4189 }
4190 return (retval);
4191 }
4192
4193 void
4194 xpt_print_path(struct cam_path *path)
4195 {
4196 GIANT_REQUIRED;
4197
4198 if (path == NULL)
4199 printf("(nopath): ");
4200 else {
4201 if (path->periph != NULL)
4202 printf("(%s%d:", path->periph->periph_name,
4203 path->periph->unit_number);
4204 else
4205 printf("(noperiph:");
4206
4207 if (path->bus != NULL)
4208 printf("%s%d:%d:", path->bus->sim->sim_name,
4209 path->bus->sim->unit_number,
4210 path->bus->sim->bus_id);
4211 else
4212 printf("nobus:");
4213
4214 if (path->target != NULL)
4215 printf("%d:", path->target->target_id);
4216 else
4217 printf("X:");
4218
4219 if (path->device != NULL)
4220 printf("%d): ", path->device->lun_id);
4221 else
4222 printf("X): ");
4223 }
4224 }
4225
4226 int
4227 xpt_path_string(struct cam_path *path, char *str, size_t str_len)
4228 {
4229 struct sbuf sb;
4230
4231 GIANT_REQUIRED;
4232
4233 sbuf_new(&sb, str, str_len, 0);
4234
4235 if (path == NULL)
4236 sbuf_printf(&sb, "(nopath): ");
4237 else {
4238 if (path->periph != NULL)
4239 sbuf_printf(&sb, "(%s%d:", path->periph->periph_name,
4240 path->periph->unit_number);
4241 else
4242 sbuf_printf(&sb, "(noperiph:");
4243
4244 if (path->bus != NULL)
4245 sbuf_printf(&sb, "%s%d:%d:", path->bus->sim->sim_name,
4246 path->bus->sim->unit_number,
4247 path->bus->sim->bus_id);
4248 else
4249 sbuf_printf(&sb, "nobus:");
4250
4251 if (path->target != NULL)
4252 sbuf_printf(&sb, "%d:", path->target->target_id);
4253 else
4254 sbuf_printf(&sb, "X:");
4255
4256 if (path->device != NULL)
4257 sbuf_printf(&sb, "%d): ", path->device->lun_id);
4258 else
4259 sbuf_printf(&sb, "X): ");
4260 }
4261 sbuf_finish(&sb);
4262
4263 return(sbuf_len(&sb));
4264 }
4265
4266 path_id_t
4267 xpt_path_path_id(struct cam_path *path)
4268 {
4269 GIANT_REQUIRED;
4270
4271 return(path->bus->path_id);
4272 }
4273
4274 target_id_t
4275 xpt_path_target_id(struct cam_path *path)
4276 {
4277 GIANT_REQUIRED;
4278
4279 if (path->target != NULL)
4280 return (path->target->target_id);
4281 else
4282 return (CAM_TARGET_WILDCARD);
4283 }
4284
4285 lun_id_t
4286 xpt_path_lun_id(struct cam_path *path)
4287 {
4288 GIANT_REQUIRED;
4289
4290 if (path->device != NULL)
4291 return (path->device->lun_id);
4292 else
4293 return (CAM_LUN_WILDCARD);
4294 }
4295
4296 struct cam_sim *
4297 xpt_path_sim(struct cam_path *path)
4298 {
4299 GIANT_REQUIRED;
4300
4301 return (path->bus->sim);
4302 }
4303
4304 struct cam_periph*
4305 xpt_path_periph(struct cam_path *path)
4306 {
4307 GIANT_REQUIRED;
4308
4309 return (path->periph);
4310 }
4311
4312 /*
4313 * Release a CAM control block for the caller. Remit the cost of the structure
4314 * to the device referenced by the path. If the this device had no 'credits'
4315 * and peripheral drivers have registered async callbacks for this notification
4316 * call them now.
4317 */
4318 void
4319 xpt_release_ccb(union ccb *free_ccb)
4320 {
4321 int s;
4322 struct cam_path *path;
4323 struct cam_ed *device;
4324 struct cam_eb *bus;
4325
4326 GIANT_REQUIRED;
4327
4328 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_release_ccb\n"));
4329 path = free_ccb->ccb_h.path;
4330 device = path->device;
4331 bus = path->bus;
4332 s = splsoftcam();
4333 cam_ccbq_release_opening(&device->ccbq);
4334 if (xpt_ccb_count > xpt_max_ccbs) {
4335 xpt_free_ccb(free_ccb);
4336 xpt_ccb_count--;
4337 } else {
4338 SLIST_INSERT_HEAD(&ccb_freeq, &free_ccb->ccb_h, xpt_links.sle);
4339 }
4340 bus->sim->devq->alloc_openings++;
4341 bus->sim->devq->alloc_active--;
4342 /* XXX Turn this into an inline function - xpt_run_device?? */
4343 if ((device_is_alloc_queued(device) == 0)
4344 && (device->drvq.entries > 0)) {
4345 xpt_schedule_dev_allocq(bus, device);
4346 }
4347 splx(s);
4348 if (dev_allocq_is_runnable(bus->sim->devq))
4349 xpt_run_dev_allocq(bus);
4350 }
4351
4352 /* Functions accessed by SIM drivers */
4353
4354 /*
4355 * A sim structure, listing the SIM entry points and instance
4356 * identification info is passed to xpt_bus_register to hook the SIM
4357 * into the CAM framework. xpt_bus_register creates a cam_eb entry
4358 * for this new bus and places it in the array of busses and assigns
4359 * it a path_id. The path_id may be influenced by "hard wiring"
4360 * information specified by the user. Once interrupt services are
4361 * availible, the bus will be probed.
4362 */
4363 int32_t
4364 xpt_bus_register(struct cam_sim *sim, u_int32_t bus)
4365 {
4366 struct cam_eb *new_bus;
4367 struct cam_eb *old_bus;
4368 struct ccb_pathinq cpi;
4369 int s;
4370
4371 GIANT_REQUIRED;
4372
4373 sim->bus_id = bus;
4374 new_bus = (struct cam_eb *)malloc(sizeof(*new_bus),
4375 M_CAMXPT, M_NOWAIT);
4376 if (new_bus == NULL) {
4377 /* Couldn't satisfy request */
4378 return (CAM_RESRC_UNAVAIL);
4379 }
4380
4381 if (strcmp(sim->sim_name, "xpt") != 0) {
4382
4383 sim->path_id =
4384 xptpathid(sim->sim_name, sim->unit_number, sim->bus_id);
4385 }
4386
4387 TAILQ_INIT(&new_bus->et_entries);
4388 new_bus->path_id = sim->path_id;
4389 new_bus->sim = sim;
4390 timevalclear(&new_bus->last_reset);
4391 new_bus->flags = 0;
4392 new_bus->refcount = 1; /* Held until a bus_deregister event */
4393 new_bus->generation = 0;
4394 s = splcam();
4395 old_bus = TAILQ_FIRST(&xpt_busses);
4396 while (old_bus != NULL
4397 && old_bus->path_id < new_bus->path_id)
4398 old_bus = TAILQ_NEXT(old_bus, links);
4399 if (old_bus != NULL)
4400 TAILQ_INSERT_BEFORE(old_bus, new_bus, links);
4401 else
4402 TAILQ_INSERT_TAIL(&xpt_busses, new_bus, links);
4403 bus_generation++;
4404 splx(s);
4405
4406 /* Notify interested parties */
4407 if (sim->path_id != CAM_XPT_PATH_ID) {
4408 struct cam_path path;
4409
4410 xpt_compile_path(&path, /*periph*/NULL, sim->path_id,
4411 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
4412 xpt_setup_ccb(&cpi.ccb_h, &path, /*priority*/1);
4413 cpi.ccb_h.func_code = XPT_PATH_INQ;
4414 xpt_action((union ccb *)&cpi);
4415 xpt_async(AC_PATH_REGISTERED, &path, &cpi);
4416 xpt_release_path(&path);
4417 }
4418 return (CAM_SUCCESS);
4419 }
4420
4421 int32_t
4422 xpt_bus_deregister(path_id_t pathid)
4423 {
4424 struct cam_path bus_path;
4425 cam_status status;
4426
4427 GIANT_REQUIRED;
4428
4429 status = xpt_compile_path(&bus_path, NULL, pathid,
4430 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
4431 if (status != CAM_REQ_CMP)
4432 return (status);
4433
4434 xpt_async(AC_LOST_DEVICE, &bus_path, NULL);
4435 xpt_async(AC_PATH_DEREGISTERED, &bus_path, NULL);
4436
4437 /* Release the reference count held while registered. */
4438 xpt_release_bus(bus_path.bus);
4439 xpt_release_path(&bus_path);
4440
4441 return (CAM_REQ_CMP);
4442 }
4443
4444 static path_id_t
4445 xptnextfreepathid(void)
4446 {
4447 struct cam_eb *bus;
4448 path_id_t pathid;
4449 const char *strval;
4450
4451 pathid = 0;
4452 bus = TAILQ_FIRST(&xpt_busses);
4453 retry:
4454 /* Find an unoccupied pathid */
4455 while (bus != NULL
4456 && bus->path_id <= pathid) {
4457 if (bus->path_id == pathid)
4458 pathid++;
4459 bus = TAILQ_NEXT(bus, links);
4460 }
4461
4462 /*
4463 * Ensure that this pathid is not reserved for
4464 * a bus that may be registered in the future.
4465 */
4466 if (resource_string_value("scbus", pathid, "at", &strval) == 0) {
4467 ++pathid;
4468 /* Start the search over */
4469 goto retry;
4470 }
4471 return (pathid);
4472 }
4473
4474 static path_id_t
4475 xptpathid(const char *sim_name, int sim_unit, int sim_bus)
4476 {
4477 path_id_t pathid;
4478 int i, dunit, val;
4479 char buf[32];
4480 const char *dname;
4481
4482 pathid = CAM_XPT_PATH_ID;
4483 snprintf(buf, sizeof(buf), "%s%d", sim_name, sim_unit);
4484 i = 0;
4485 while ((resource_find_match(&i, &dname, &dunit, "at", buf)) == 0) {
4486 if (strcmp(dname, "scbus")) {
4487 /* Avoid a bit of foot shooting. */
4488 continue;
4489 }
4490 if (dunit < 0) /* unwired?! */
4491 continue;
4492 if (resource_int_value("scbus", dunit, "bus", &val) == 0) {
4493 if (sim_bus == val) {
4494 pathid = dunit;
4495 break;
4496 }
4497 } else if (sim_bus == 0) {
4498 /* Unspecified matches bus 0 */
4499 pathid = dunit;
4500 break;
4501 } else {
4502 printf("Ambiguous scbus configuration for %s%d "
4503 "bus %d, cannot wire down. The kernel "
4504 "config entry for scbus%d should "
4505 "specify a controller bus.\n"
4506 "Scbus will be assigned dynamically.\n",
4507 sim_name, sim_unit, sim_bus, dunit);
4508 break;
4509 }
4510 }
4511
4512 if (pathid == CAM_XPT_PATH_ID)
4513 pathid = xptnextfreepathid();
4514 return (pathid);
4515 }
4516
4517 void
4518 xpt_async(u_int32_t async_code, struct cam_path *path, void *async_arg)
4519 {
4520 struct cam_eb *bus;
4521 struct cam_et *target, *next_target;
4522 struct cam_ed *device, *next_device;
4523 int s;
4524
4525 GIANT_REQUIRED;
4526
4527 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_async\n"));
4528
4529 /*
4530 * Most async events come from a CAM interrupt context. In
4531 * a few cases, the error recovery code at the peripheral layer,
4532 * which may run from our SWI or a process context, may signal
4533 * deferred events with a call to xpt_async. Ensure async
4534 * notifications are serialized by blocking cam interrupts.
4535 */
4536 s = splcam();
4537
4538 bus = path->bus;
4539
4540 if (async_code == AC_BUS_RESET) {
4541 int s;
4542
4543 s = splclock();
4544 /* Update our notion of when the last reset occurred */
4545 microtime(&bus->last_reset);
4546 splx(s);
4547 }
4548
4549 for (target = TAILQ_FIRST(&bus->et_entries);
4550 target != NULL;
4551 target = next_target) {
4552
4553 next_target = TAILQ_NEXT(target, links);
4554
4555 if (path->target != target
4556 && path->target->target_id != CAM_TARGET_WILDCARD
4557 && target->target_id != CAM_TARGET_WILDCARD)
4558 continue;
4559
4560 if (async_code == AC_SENT_BDR) {
4561 int s;
4562
4563 /* Update our notion of when the last reset occurred */
4564 s = splclock();
4565 microtime(&path->target->last_reset);
4566 splx(s);
4567 }
4568
4569 for (device = TAILQ_FIRST(&target->ed_entries);
4570 device != NULL;
4571 device = next_device) {
4572
4573 next_device = TAILQ_NEXT(device, links);
4574
4575 if (path->device != device
4576 && path->device->lun_id != CAM_LUN_WILDCARD
4577 && device->lun_id != CAM_LUN_WILDCARD)
4578 continue;
4579
4580 xpt_dev_async(async_code, bus, target,
4581 device, async_arg);
4582
4583 xpt_async_bcast(&device->asyncs, async_code,
4584 path, async_arg);
4585 }
4586 }
4587
4588 /*
4589 * If this wasn't a fully wildcarded async, tell all
4590 * clients that want all async events.
4591 */
4592 if (bus != xpt_periph->path->bus)
4593 xpt_async_bcast(&xpt_periph->path->device->asyncs, async_code,
4594 path, async_arg);
4595 splx(s);
4596 }
4597
4598 static void
4599 xpt_async_bcast(struct async_list *async_head,
4600 u_int32_t async_code,
4601 struct cam_path *path, void *async_arg)
4602 {
4603 struct async_node *cur_entry;
4604
4605 cur_entry = SLIST_FIRST(async_head);
4606 while (cur_entry != NULL) {
4607 struct async_node *next_entry;
4608 /*
4609 * Grab the next list entry before we call the current
4610 * entry's callback. This is because the callback function
4611 * can delete its async callback entry.
4612 */
4613 next_entry = SLIST_NEXT(cur_entry, links);
4614 if ((cur_entry->event_enable & async_code) != 0)
4615 cur_entry->callback(cur_entry->callback_arg,
4616 async_code, path,
4617 async_arg);
4618 cur_entry = next_entry;
4619 }
4620 }
4621
4622 /*
4623 * Handle any per-device event notifications that require action by the XPT.
4624 */
4625 static void
4626 xpt_dev_async(u_int32_t async_code, struct cam_eb *bus, struct cam_et *target,
4627 struct cam_ed *device, void *async_arg)
4628 {
4629 cam_status status;
4630 struct cam_path newpath;
4631
4632 /*
4633 * We only need to handle events for real devices.
4634 */
4635 if (target->target_id == CAM_TARGET_WILDCARD
4636 || device->lun_id == CAM_LUN_WILDCARD)
4637 return;
4638
4639 /*
4640 * We need our own path with wildcards expanded to
4641 * handle certain types of events.
4642 */
4643 if ((async_code == AC_SENT_BDR)
4644 || (async_code == AC_BUS_RESET)
4645 || (async_code == AC_INQ_CHANGED))
4646 status = xpt_compile_path(&newpath, NULL,
4647 bus->path_id,
4648 target->target_id,
4649 device->lun_id);
4650 else
4651 status = CAM_REQ_CMP_ERR;
4652
4653 if (status == CAM_REQ_CMP) {
4654
4655 /*
4656 * Allow transfer negotiation to occur in a
4657 * tag free environment.
4658 */
4659 if (async_code == AC_SENT_BDR
4660 || async_code == AC_BUS_RESET)
4661 xpt_toggle_tags(&newpath);
4662
4663 if (async_code == AC_INQ_CHANGED) {
4664 /*
4665 * We've sent a start unit command, or
4666 * something similar to a device that
4667 * may have caused its inquiry data to
4668 * change. So we re-scan the device to
4669 * refresh the inquiry data for it.
4670 */
4671 xpt_scan_lun(newpath.periph, &newpath,
4672 CAM_EXPECT_INQ_CHANGE, NULL);
4673 }
4674 xpt_release_path(&newpath);
4675 } else if (async_code == AC_LOST_DEVICE) {
4676 device->flags |= CAM_DEV_UNCONFIGURED;
4677 } else if (async_code == AC_TRANSFER_NEG) {
4678 struct ccb_trans_settings *settings;
4679
4680 settings = (struct ccb_trans_settings *)async_arg;
4681 xpt_set_transfer_settings(settings, device,
4682 /*async_update*/TRUE);
4683 }
4684 }
4685
4686 u_int32_t
4687 xpt_freeze_devq(struct cam_path *path, u_int count)
4688 {
4689 int s;
4690 struct ccb_hdr *ccbh;
4691
4692 GIANT_REQUIRED;
4693
4694 s = splcam();
4695 path->device->qfrozen_cnt += count;
4696
4697 /*
4698 * Mark the last CCB in the queue as needing
4699 * to be requeued if the driver hasn't
4700 * changed it's state yet. This fixes a race
4701 * where a ccb is just about to be queued to
4702 * a controller driver when it's interrupt routine
4703 * freezes the queue. To completly close the
4704 * hole, controller drives must check to see
4705 * if a ccb's status is still CAM_REQ_INPROG
4706 * under spl protection just before they queue
4707 * the CCB. See ahc_action/ahc_freeze_devq for
4708 * an example.
4709 */
4710 ccbh = TAILQ_LAST(&path->device->ccbq.active_ccbs, ccb_hdr_tailq);
4711 if (ccbh && ccbh->status == CAM_REQ_INPROG)
4712 ccbh->status = CAM_REQUEUE_REQ;
4713 splx(s);
4714 return (path->device->qfrozen_cnt);
4715 }
4716
4717 u_int32_t
4718 xpt_freeze_simq(struct cam_sim *sim, u_int count)
4719 {
4720 GIANT_REQUIRED;
4721
4722 sim->devq->send_queue.qfrozen_cnt += count;
4723 if (sim->devq->active_dev != NULL) {
4724 struct ccb_hdr *ccbh;
4725
4726 ccbh = TAILQ_LAST(&sim->devq->active_dev->ccbq.active_ccbs,
4727 ccb_hdr_tailq);
4728 if (ccbh && ccbh->status == CAM_REQ_INPROG)
4729 ccbh->status = CAM_REQUEUE_REQ;
4730 }
4731 return (sim->devq->send_queue.qfrozen_cnt);
4732 }
4733
4734 static void
4735 xpt_release_devq_timeout(void *arg)
4736 {
4737 struct cam_ed *device;
4738
4739 device = (struct cam_ed *)arg;
4740
4741 xpt_release_devq_device(device, /*count*/1, /*run_queue*/TRUE);
4742 }
4743
4744 void
4745 xpt_release_devq(struct cam_path *path, u_int count, int run_queue)
4746 {
4747 GIANT_REQUIRED;
4748
4749 xpt_release_devq_device(path->device, count, run_queue);
4750 }
4751
4752 static void
4753 xpt_release_devq_device(struct cam_ed *dev, u_int count, int run_queue)
4754 {
4755 int rundevq;
4756 int s0, s1;
4757
4758 rundevq = 0;
4759 s0 = splsoftcam();
4760 s1 = splcam();
4761 if (dev->qfrozen_cnt > 0) {
4762
4763 count = (count > dev->qfrozen_cnt) ? dev->qfrozen_cnt : count;
4764 dev->qfrozen_cnt -= count;
4765 if (dev->qfrozen_cnt == 0) {
4766
4767 /*
4768 * No longer need to wait for a successful
4769 * command completion.
4770 */
4771 dev->flags &= ~CAM_DEV_REL_ON_COMPLETE;
4772
4773 /*
4774 * Remove any timeouts that might be scheduled
4775 * to release this queue.
4776 */
4777 if ((dev->flags & CAM_DEV_REL_TIMEOUT_PENDING) != 0) {
4778 untimeout(xpt_release_devq_timeout, dev,
4779 dev->c_handle);
4780 dev->flags &= ~CAM_DEV_REL_TIMEOUT_PENDING;
4781 }
4782
4783 /*
4784 * Now that we are unfrozen schedule the
4785 * device so any pending transactions are
4786 * run.
4787 */
4788 if ((dev->ccbq.queue.entries > 0)
4789 && (xpt_schedule_dev_sendq(dev->target->bus, dev))
4790 && (run_queue != 0)) {
4791 rundevq = 1;
4792 }
4793 }
4794 }
4795 splx(s1);
4796 if (rundevq != 0)
4797 xpt_run_dev_sendq(dev->target->bus);
4798 splx(s0);
4799 }
4800
4801 void
4802 xpt_release_simq(struct cam_sim *sim, int run_queue)
4803 {
4804 int s;
4805 struct camq *sendq;
4806
4807 GIANT_REQUIRED;
4808
4809 sendq = &(sim->devq->send_queue);
4810 s = splcam();
4811 if (sendq->qfrozen_cnt > 0) {
4812
4813 sendq->qfrozen_cnt--;
4814 if (sendq->qfrozen_cnt == 0) {
4815 struct cam_eb *bus;
4816
4817 /*
4818 * If there is a timeout scheduled to release this
4819 * sim queue, remove it. The queue frozen count is
4820 * already at 0.
4821 */
4822 if ((sim->flags & CAM_SIM_REL_TIMEOUT_PENDING) != 0){
4823 untimeout(xpt_release_simq_timeout, sim,
4824 sim->c_handle);
4825 sim->flags &= ~CAM_SIM_REL_TIMEOUT_PENDING;
4826 }
4827 bus = xpt_find_bus(sim->path_id);
4828 splx(s);
4829
4830 if (run_queue) {
4831 /*
4832 * Now that we are unfrozen run the send queue.
4833 */
4834 xpt_run_dev_sendq(bus);
4835 }
4836 xpt_release_bus(bus);
4837 } else
4838 splx(s);
4839 } else
4840 splx(s);
4841 }
4842
4843 static void
4844 xpt_release_simq_timeout(void *arg)
4845 {
4846 struct cam_sim *sim;
4847
4848 sim = (struct cam_sim *)arg;
4849 xpt_release_simq(sim, /* run_queue */ TRUE);
4850 }
4851
4852 void
4853 xpt_done(union ccb *done_ccb)
4854 {
4855 int s;
4856
4857 s = splcam();
4858
4859 CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("xpt_done\n"));
4860 if ((done_ccb->ccb_h.func_code & XPT_FC_QUEUED) != 0) {
4861 /*
4862 * Queue up the request for handling by our SWI handler
4863 * any of the "non-immediate" type of ccbs.
4864 */
4865 switch (done_ccb->ccb_h.path->periph->type) {
4866 case CAM_PERIPH_BIO:
4867 mtx_lock(&cam_bioq_lock);
4868 TAILQ_INSERT_TAIL(&cam_bioq, &done_ccb->ccb_h,
4869 sim_links.tqe);
4870 done_ccb->ccb_h.pinfo.index = CAM_DONEQ_INDEX;
4871 mtx_unlock(&cam_bioq_lock);
4872 swi_sched(cambio_ih, 0);
4873 break;
4874 default:
4875 panic("unknown periph type %d",
4876 done_ccb->ccb_h.path->periph->type);
4877 }
4878 }
4879 splx(s);
4880 }
4881
4882 union ccb *
4883 xpt_alloc_ccb()
4884 {
4885 union ccb *new_ccb;
4886
4887 GIANT_REQUIRED;
4888
4889 new_ccb = malloc(sizeof(*new_ccb), M_CAMXPT, M_WAITOK);
4890 return (new_ccb);
4891 }
4892
4893 union ccb *
4894 xpt_alloc_ccb_nowait()
4895 {
4896 union ccb *new_ccb;
4897
4898 GIANT_REQUIRED;
4899
4900 new_ccb = malloc(sizeof(*new_ccb), M_CAMXPT, M_NOWAIT);
4901 return (new_ccb);
4902 }
4903
4904 void
4905 xpt_free_ccb(union ccb *free_ccb)
4906 {
4907 free(free_ccb, M_CAMXPT);
4908 }
4909
4910
4911
4912 /* Private XPT functions */
4913
4914 /*
4915 * Get a CAM control block for the caller. Charge the structure to the device
4916 * referenced by the path. If the this device has no 'credits' then the
4917 * device already has the maximum number of outstanding operations under way
4918 * and we return NULL. If we don't have sufficient resources to allocate more
4919 * ccbs, we also return NULL.
4920 */
4921 static union ccb *
4922 xpt_get_ccb(struct cam_ed *device)
4923 {
4924 union ccb *new_ccb;
4925 int s;
4926
4927 s = splsoftcam();
4928 if ((new_ccb = (union ccb *)SLIST_FIRST(&ccb_freeq)) == NULL) {
4929 new_ccb = xpt_alloc_ccb_nowait();
4930 if (new_ccb == NULL) {
4931 splx(s);
4932 return (NULL);
4933 }
4934 callout_handle_init(&new_ccb->ccb_h.timeout_ch);
4935 SLIST_INSERT_HEAD(&ccb_freeq, &new_ccb->ccb_h,
4936 xpt_links.sle);
4937 xpt_ccb_count++;
4938 }
4939 cam_ccbq_take_opening(&device->ccbq);
4940 SLIST_REMOVE_HEAD(&ccb_freeq, xpt_links.sle);
4941 splx(s);
4942 return (new_ccb);
4943 }
4944
4945 static void
4946 xpt_release_bus(struct cam_eb *bus)
4947 {
4948 int s;
4949
4950 s = splcam();
4951 if ((--bus->refcount == 0)
4952 && (TAILQ_FIRST(&bus->et_entries) == NULL)) {
4953 TAILQ_REMOVE(&xpt_busses, bus, links);
4954 bus_generation++;
4955 splx(s);
4956 free(bus, M_CAMXPT);
4957 } else
4958 splx(s);
4959 }
4960
4961 static struct cam_et *
4962 xpt_alloc_target(struct cam_eb *bus, target_id_t target_id)
4963 {
4964 struct cam_et *target;
4965
4966 target = (struct cam_et *)malloc(sizeof(*target), M_CAMXPT, M_NOWAIT);
4967 if (target != NULL) {
4968 struct cam_et *cur_target;
4969
4970 TAILQ_INIT(&target->ed_entries);
4971 target->bus = bus;
4972 target->target_id = target_id;
4973 target->refcount = 1;
4974 target->generation = 0;
4975 timevalclear(&target->last_reset);
4976 /*
4977 * Hold a reference to our parent bus so it
4978 * will not go away before we do.
4979 */
4980 bus->refcount++;
4981
4982 /* Insertion sort into our bus's target list */
4983 cur_target = TAILQ_FIRST(&bus->et_entries);
4984 while (cur_target != NULL && cur_target->target_id < target_id)
4985 cur_target = TAILQ_NEXT(cur_target, links);
4986
4987 if (cur_target != NULL) {
4988 TAILQ_INSERT_BEFORE(cur_target, target, links);
4989 } else {
4990 TAILQ_INSERT_TAIL(&bus->et_entries, target, links);
4991 }
4992 bus->generation++;
4993 }
4994 return (target);
4995 }
4996
4997 static void
4998 xpt_release_target(struct cam_eb *bus, struct cam_et *target)
4999 {
5000 int s;
5001
5002 s = splcam();
5003 if ((--target->refcount == 0)
5004 && (TAILQ_FIRST(&target->ed_entries) == NULL)) {
5005 TAILQ_REMOVE(&bus->et_entries, target, links);
5006 bus->generation++;
5007 splx(s);
5008 free(target, M_CAMXPT);
5009 xpt_release_bus(bus);
5010 } else
5011 splx(s);
5012 }
5013
5014 static struct cam_ed *
5015 xpt_alloc_device(struct cam_eb *bus, struct cam_et *target, lun_id_t lun_id)
5016 {
5017 #ifdef CAM_NEW_TRAN_CODE
5018 struct cam_path path;
5019 #endif /* CAM_NEW_TRAN_CODE */
5020 struct cam_ed *device;
5021 struct cam_devq *devq;
5022 cam_status status;
5023
5024 /* Make space for us in the device queue on our bus */
5025 devq = bus->sim->devq;
5026 status = cam_devq_resize(devq, devq->alloc_queue.array_size + 1);
5027
5028 if (status != CAM_REQ_CMP) {
5029 device = NULL;
5030 } else {
5031 device = (struct cam_ed *)malloc(sizeof(*device),
5032 M_CAMXPT, M_NOWAIT);
5033 }
5034
5035 if (device != NULL) {
5036 struct cam_ed *cur_device;
5037
5038 cam_init_pinfo(&device->alloc_ccb_entry.pinfo);
5039 device->alloc_ccb_entry.device = device;
5040 cam_init_pinfo(&device->send_ccb_entry.pinfo);
5041 device->send_ccb_entry.device = device;
5042 device->target = target;
5043 device->lun_id = lun_id;
5044 /* Initialize our queues */
5045 if (camq_init(&device->drvq, 0) != 0) {
5046 free(device, M_CAMXPT);
5047 return (NULL);
5048 }
5049 if (cam_ccbq_init(&device->ccbq,
5050 bus->sim->max_dev_openings) != 0) {
5051 camq_fini(&device->drvq);
5052 free(device, M_CAMXPT);
5053 return (NULL);
5054 }
5055 SLIST_INIT(&device->asyncs);
5056 SLIST_INIT(&device->periphs);
5057 device->generation = 0;
5058 device->owner = NULL;
5059 /*
5060 * Take the default quirk entry until we have inquiry
5061 * data and can determine a better quirk to use.
5062 */
5063 device->quirk = &xpt_quirk_table[xpt_quirk_table_size - 1];
5064 bzero(&device->inq_data, sizeof(device->inq_data));
5065 device->inq_flags = 0;
5066 device->queue_flags = 0;
5067 device->serial_num = NULL;
5068 device->serial_num_len = 0;
5069 device->qfrozen_cnt = 0;
5070 device->flags = CAM_DEV_UNCONFIGURED;
5071 device->tag_delay_count = 0;
5072 device->tag_saved_openings = 0;
5073 device->refcount = 1;
5074 callout_handle_init(&device->c_handle);
5075
5076 /*
5077 * Hold a reference to our parent target so it
5078 * will not go away before we do.
5079 */
5080 target->refcount++;
5081
5082 /*
5083 * XXX should be limited by number of CCBs this bus can
5084 * do.
5085 */
5086 xpt_max_ccbs += device->ccbq.devq_openings;
5087 /* Insertion sort into our target's device list */
5088 cur_device = TAILQ_FIRST(&target->ed_entries);
5089 while (cur_device != NULL && cur_device->lun_id < lun_id)
5090 cur_device = TAILQ_NEXT(cur_device, links);
5091 if (cur_device != NULL) {
5092 TAILQ_INSERT_BEFORE(cur_device, device, links);
5093 } else {
5094 TAILQ_INSERT_TAIL(&target->ed_entries, device, links);
5095 }
5096 target->generation++;
5097 #ifdef CAM_NEW_TRAN_CODE
5098 if (lun_id != CAM_LUN_WILDCARD) {
5099 xpt_compile_path(&path,
5100 NULL,
5101 bus->path_id,
5102 target->target_id,
5103 lun_id);
5104 xpt_devise_transport(&path);
5105 xpt_release_path(&path);
5106 }
5107 #endif /* CAM_NEW_TRAN_CODE */
5108 }
5109 return (device);
5110 }
5111
5112 static void
5113 xpt_release_device(struct cam_eb *bus, struct cam_et *target,
5114 struct cam_ed *device)
5115 {
5116 int s;
5117
5118 s = splcam();
5119 if ((--device->refcount == 0)
5120 && ((device->flags & CAM_DEV_UNCONFIGURED) != 0)) {
5121 struct cam_devq *devq;
5122
5123 if (device->alloc_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX
5124 || device->send_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX)
5125 panic("Removing device while still queued for ccbs");
5126
5127 if ((device->flags & CAM_DEV_REL_TIMEOUT_PENDING) != 0)
5128 untimeout(xpt_release_devq_timeout, device,
5129 device->c_handle);
5130
5131 TAILQ_REMOVE(&target->ed_entries, device,links);
5132 target->generation++;
5133 xpt_max_ccbs -= device->ccbq.devq_openings;
5134 /* Release our slot in the devq */
5135 devq = bus->sim->devq;
5136 cam_devq_resize(devq, devq->alloc_queue.array_size - 1);
5137 splx(s);
5138 camq_fini(&device->drvq);
5139 camq_fini(&device->ccbq.queue);
5140 free(device, M_CAMXPT);
5141 xpt_release_target(bus, target);
5142 } else
5143 splx(s);
5144 }
5145
5146 static u_int32_t
5147 xpt_dev_ccbq_resize(struct cam_path *path, int newopenings)
5148 {
5149 int s;
5150 int diff;
5151 int result;
5152 struct cam_ed *dev;
5153
5154 dev = path->device;
5155 s = splsoftcam();
5156
5157 diff = newopenings - (dev->ccbq.dev_active + dev->ccbq.dev_openings);
5158 result = cam_ccbq_resize(&dev->ccbq, newopenings);
5159 if (result == CAM_REQ_CMP && (diff < 0)) {
5160 dev->flags |= CAM_DEV_RESIZE_QUEUE_NEEDED;
5161 }
5162 if ((dev->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
5163 || (dev->inq_flags & SID_CmdQue) != 0)
5164 dev->tag_saved_openings = newopenings;
5165 /* Adjust the global limit */
5166 xpt_max_ccbs += diff;
5167 splx(s);
5168 return (result);
5169 }
5170
5171 static struct cam_eb *
5172 xpt_find_bus(path_id_t path_id)
5173 {
5174 struct cam_eb *bus;
5175
5176 for (bus = TAILQ_FIRST(&xpt_busses);
5177 bus != NULL;
5178 bus = TAILQ_NEXT(bus, links)) {
5179 if (bus->path_id == path_id) {
5180 bus->refcount++;
5181 break;
5182 }
5183 }
5184 return (bus);
5185 }
5186
5187 static struct cam_et *
5188 xpt_find_target(struct cam_eb *bus, target_id_t target_id)
5189 {
5190 struct cam_et *target;
5191
5192 for (target = TAILQ_FIRST(&bus->et_entries);
5193 target != NULL;
5194 target = TAILQ_NEXT(target, links)) {
5195 if (target->target_id == target_id) {
5196 target->refcount++;
5197 break;
5198 }
5199 }
5200 return (target);
5201 }
5202
5203 static struct cam_ed *
5204 xpt_find_device(struct cam_et *target, lun_id_t lun_id)
5205 {
5206 struct cam_ed *device;
5207
5208 for (device = TAILQ_FIRST(&target->ed_entries);
5209 device != NULL;
5210 device = TAILQ_NEXT(device, links)) {
5211 if (device->lun_id == lun_id) {
5212 device->refcount++;
5213 break;
5214 }
5215 }
5216 return (device);
5217 }
5218
5219 typedef struct {
5220 union ccb *request_ccb;
5221 struct ccb_pathinq *cpi;
5222 int pending_count;
5223 } xpt_scan_bus_info;
5224
5225 /*
5226 * To start a scan, request_ccb is an XPT_SCAN_BUS ccb.
5227 * As the scan progresses, xpt_scan_bus is used as the
5228 * callback on completion function.
5229 */
5230 static void
5231 xpt_scan_bus(struct cam_periph *periph, union ccb *request_ccb)
5232 {
5233 CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE,
5234 ("xpt_scan_bus\n"));
5235 switch (request_ccb->ccb_h.func_code) {
5236 case XPT_SCAN_BUS:
5237 {
5238 xpt_scan_bus_info *scan_info;
5239 union ccb *work_ccb;
5240 struct cam_path *path;
5241 u_int i;
5242 u_int max_target;
5243 u_int initiator_id;
5244
5245 /* Find out the characteristics of the bus */
5246 work_ccb = xpt_alloc_ccb();
5247 xpt_setup_ccb(&work_ccb->ccb_h, request_ccb->ccb_h.path,
5248 request_ccb->ccb_h.pinfo.priority);
5249 work_ccb->ccb_h.func_code = XPT_PATH_INQ;
5250 xpt_action(work_ccb);
5251 if (work_ccb->ccb_h.status != CAM_REQ_CMP) {
5252 request_ccb->ccb_h.status = work_ccb->ccb_h.status;
5253 xpt_free_ccb(work_ccb);
5254 xpt_done(request_ccb);
5255 return;
5256 }
5257
5258 if ((work_ccb->cpi.hba_misc & PIM_NOINITIATOR) != 0) {
5259 /*
5260 * Can't scan the bus on an adapter that
5261 * cannot perform the initiator role.
5262 */
5263 request_ccb->ccb_h.status = CAM_REQ_CMP;
5264 xpt_free_ccb(work_ccb);
5265 xpt_done(request_ccb);
5266 return;
5267 }
5268
5269 /* Save some state for use while we probe for devices */
5270 scan_info = (xpt_scan_bus_info *)
5271 malloc(sizeof(xpt_scan_bus_info), M_TEMP, M_WAITOK);
5272 scan_info->request_ccb = request_ccb;
5273 scan_info->cpi = &work_ccb->cpi;
5274
5275 /* Cache on our stack so we can work asynchronously */
5276 max_target = scan_info->cpi->max_target;
5277 initiator_id = scan_info->cpi->initiator_id;
5278
5279 /*
5280 * Don't count the initiator if the
5281 * initiator is addressable.
5282 */
5283 scan_info->pending_count = max_target + 1;
5284 if (initiator_id <= max_target)
5285 scan_info->pending_count--;
5286
5287 for (i = 0; i <= max_target; i++) {
5288 cam_status status;
5289 if (i == initiator_id)
5290 continue;
5291
5292 status = xpt_create_path(&path, xpt_periph,
5293 request_ccb->ccb_h.path_id,
5294 i, 0);
5295 if (status != CAM_REQ_CMP) {
5296 printf("xpt_scan_bus: xpt_create_path failed"
5297 " with status %#x, bus scan halted\n",
5298 status);
5299 break;
5300 }
5301 work_ccb = xpt_alloc_ccb();
5302 xpt_setup_ccb(&work_ccb->ccb_h, path,
5303 request_ccb->ccb_h.pinfo.priority);
5304 work_ccb->ccb_h.func_code = XPT_SCAN_LUN;
5305 work_ccb->ccb_h.cbfcnp = xpt_scan_bus;
5306 work_ccb->ccb_h.ppriv_ptr0 = scan_info;
5307 work_ccb->crcn.flags = request_ccb->crcn.flags;
5308 xpt_action(work_ccb);
5309 }
5310 break;
5311 }
5312 case XPT_SCAN_LUN:
5313 {
5314 xpt_scan_bus_info *scan_info;
5315 path_id_t path_id;
5316 target_id_t target_id;
5317 lun_id_t lun_id;
5318
5319 /* Reuse the same CCB to query if a device was really found */
5320 scan_info = (xpt_scan_bus_info *)request_ccb->ccb_h.ppriv_ptr0;
5321 xpt_setup_ccb(&request_ccb->ccb_h, request_ccb->ccb_h.path,
5322 request_ccb->ccb_h.pinfo.priority);
5323 request_ccb->ccb_h.func_code = XPT_GDEV_TYPE;
5324
5325 path_id = request_ccb->ccb_h.path_id;
5326 target_id = request_ccb->ccb_h.target_id;
5327 lun_id = request_ccb->ccb_h.target_lun;
5328 xpt_action(request_ccb);
5329
5330 if (request_ccb->ccb_h.status != CAM_REQ_CMP) {
5331 struct cam_ed *device;
5332 struct cam_et *target;
5333 int s, phl;
5334
5335 /*
5336 * If we already probed lun 0 successfully, or
5337 * we have additional configured luns on this
5338 * target that might have "gone away", go onto
5339 * the next lun.
5340 */
5341 target = request_ccb->ccb_h.path->target;
5342 /*
5343 * We may touch devices that we don't
5344 * hold references too, so ensure they
5345 * don't disappear out from under us.
5346 * The target above is referenced by the
5347 * path in the request ccb.
5348 */
5349 phl = 0;
5350 s = splcam();
5351 device = TAILQ_FIRST(&target->ed_entries);
5352 if (device != NULL) {
5353 phl = CAN_SRCH_HI_SPARSE(device);
5354 if (device->lun_id == 0)
5355 device = TAILQ_NEXT(device, links);
5356 }
5357 splx(s);
5358 if ((lun_id != 0) || (device != NULL)) {
5359 if (lun_id < (CAM_SCSI2_MAXLUN-1) || phl)
5360 lun_id++;
5361 }
5362 } else {
5363 struct cam_ed *device;
5364
5365 device = request_ccb->ccb_h.path->device;
5366
5367 if ((device->quirk->quirks & CAM_QUIRK_NOLUNS) == 0) {
5368 /* Try the next lun */
5369 if (lun_id < (CAM_SCSI2_MAXLUN-1)
5370 || CAN_SRCH_HI_DENSE(device))
5371 lun_id++;
5372 }
5373 }
5374
5375 xpt_free_path(request_ccb->ccb_h.path);
5376
5377 /* Check Bounds */
5378 if ((lun_id == request_ccb->ccb_h.target_lun)
5379 || lun_id > scan_info->cpi->max_lun) {
5380 /* We're done */
5381
5382 xpt_free_ccb(request_ccb);
5383 scan_info->pending_count--;
5384 if (scan_info->pending_count == 0) {
5385 xpt_free_ccb((union ccb *)scan_info->cpi);
5386 request_ccb = scan_info->request_ccb;
5387 free(scan_info, M_TEMP);
5388 request_ccb->ccb_h.status = CAM_REQ_CMP;
5389 xpt_done(request_ccb);
5390 }
5391 } else {
5392 /* Try the next device */
5393 struct cam_path *path;
5394 cam_status status;
5395
5396 status = xpt_create_path(&path, xpt_periph,
5397 path_id, target_id, lun_id);
5398 if (status != CAM_REQ_CMP) {
5399 printf("xpt_scan_bus: xpt_create_path failed "
5400 "with status %#x, halting LUN scan\n",
5401 status);
5402 xpt_free_ccb(request_ccb);
5403 scan_info->pending_count--;
5404 if (scan_info->pending_count == 0) {
5405 xpt_free_ccb(
5406 (union ccb *)scan_info->cpi);
5407 request_ccb = scan_info->request_ccb;
5408 free(scan_info, M_TEMP);
5409 request_ccb->ccb_h.status = CAM_REQ_CMP;
5410 xpt_done(request_ccb);
5411 }
5412 break;
5413 }
5414 xpt_setup_ccb(&request_ccb->ccb_h, path,
5415 request_ccb->ccb_h.pinfo.priority);
5416 request_ccb->ccb_h.func_code = XPT_SCAN_LUN;
5417 request_ccb->ccb_h.cbfcnp = xpt_scan_bus;
5418 request_ccb->ccb_h.ppriv_ptr0 = scan_info;
5419 request_ccb->crcn.flags =
5420 scan_info->request_ccb->crcn.flags;
5421 xpt_action(request_ccb);
5422 }
5423 break;
5424 }
5425 default:
5426 break;
5427 }
5428 }
5429
5430 typedef enum {
5431 PROBE_TUR,
5432 PROBE_INQUIRY,
5433 PROBE_FULL_INQUIRY,
5434 PROBE_MODE_SENSE,
5435 PROBE_SERIAL_NUM,
5436 PROBE_TUR_FOR_NEGOTIATION
5437 } probe_action;
5438
5439 typedef enum {
5440 PROBE_INQUIRY_CKSUM = 0x01,
5441 PROBE_SERIAL_CKSUM = 0x02,
5442 PROBE_NO_ANNOUNCE = 0x04
5443 } probe_flags;
5444
5445 typedef struct {
5446 TAILQ_HEAD(, ccb_hdr) request_ccbs;
5447 probe_action action;
5448 union ccb saved_ccb;
5449 probe_flags flags;
5450 MD5_CTX context;
5451 u_int8_t digest[16];
5452 } probe_softc;
5453
5454 static void
5455 xpt_scan_lun(struct cam_periph *periph, struct cam_path *path,
5456 cam_flags flags, union ccb *request_ccb)
5457 {
5458 struct ccb_pathinq cpi;
5459 cam_status status;
5460 struct cam_path *new_path;
5461 struct cam_periph *old_periph;
5462 int s;
5463
5464 CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE,
5465 ("xpt_scan_lun\n"));
5466
5467 xpt_setup_ccb(&cpi.ccb_h, path, /*priority*/1);
5468 cpi.ccb_h.func_code = XPT_PATH_INQ;
5469 xpt_action((union ccb *)&cpi);
5470
5471 if (cpi.ccb_h.status != CAM_REQ_CMP) {
5472 if (request_ccb != NULL) {
5473 request_ccb->ccb_h.status = cpi.ccb_h.status;
5474 xpt_done(request_ccb);
5475 }
5476 return;
5477 }
5478
5479 if ((cpi.hba_misc & PIM_NOINITIATOR) != 0) {
5480 /*
5481 * Can't scan the bus on an adapter that
5482 * cannot perform the initiator role.
5483 */
5484 if (request_ccb != NULL) {
5485 request_ccb->ccb_h.status = CAM_REQ_CMP;
5486 xpt_done(request_ccb);
5487 }
5488 return;
5489 }
5490
5491 if (request_ccb == NULL) {
5492 request_ccb = malloc(sizeof(union ccb), M_TEMP, M_NOWAIT);
5493 if (request_ccb == NULL) {
5494 xpt_print_path(path);
5495 printf("xpt_scan_lun: can't allocate CCB, can't "
5496 "continue\n");
5497 return;
5498 }
5499 new_path = malloc(sizeof(*new_path), M_TEMP, M_NOWAIT);
5500 if (new_path == NULL) {
5501 xpt_print_path(path);
5502 printf("xpt_scan_lun: can't allocate path, can't "
5503 "continue\n");
5504 free(request_ccb, M_TEMP);
5505 return;
5506 }
5507 status = xpt_compile_path(new_path, xpt_periph,
5508 path->bus->path_id,
5509 path->target->target_id,
5510 path->device->lun_id);
5511
5512 if (status != CAM_REQ_CMP) {
5513 xpt_print_path(path);
5514 printf("xpt_scan_lun: can't compile path, can't "
5515 "continue\n");
5516 free(request_ccb, M_TEMP);
5517 free(new_path, M_TEMP);
5518 return;
5519 }
5520 xpt_setup_ccb(&request_ccb->ccb_h, new_path, /*priority*/ 1);
5521 request_ccb->ccb_h.cbfcnp = xptscandone;
5522 request_ccb->ccb_h.func_code = XPT_SCAN_LUN;
5523 request_ccb->crcn.flags = flags;
5524 }
5525
5526 s = splsoftcam();
5527 if ((old_periph = cam_periph_find(path, "probe")) != NULL) {
5528 probe_softc *softc;
5529
5530 softc = (probe_softc *)old_periph->softc;
5531 TAILQ_INSERT_TAIL(&softc->request_ccbs, &request_ccb->ccb_h,
5532 periph_links.tqe);
5533 } else {
5534 status = cam_periph_alloc(proberegister, NULL, probecleanup,
5535 probestart, "probe",
5536 CAM_PERIPH_BIO,
5537 request_ccb->ccb_h.path, NULL, 0,
5538 request_ccb);
5539
5540 if (status != CAM_REQ_CMP) {
5541 xpt_print_path(path);
5542 printf("xpt_scan_lun: cam_alloc_periph returned an "
5543 "error, can't continue probe\n");
5544 request_ccb->ccb_h.status = status;
5545 xpt_done(request_ccb);
5546 }
5547 }
5548 splx(s);
5549 }
5550
5551 static void
5552 xptscandone(struct cam_periph *periph, union ccb *done_ccb)
5553 {
5554 xpt_release_path(done_ccb->ccb_h.path);
5555 free(done_ccb->ccb_h.path, M_TEMP);
5556 free(done_ccb, M_TEMP);
5557 }
5558
5559 static cam_status
5560 proberegister(struct cam_periph *periph, void *arg)
5561 {
5562 union ccb *request_ccb; /* CCB representing the probe request */
5563 probe_softc *softc;
5564
5565 request_ccb = (union ccb *)arg;
5566 if (periph == NULL) {
5567 printf("proberegister: periph was NULL!!\n");
5568 return(CAM_REQ_CMP_ERR);
5569 }
5570
5571 if (request_ccb == NULL) {
5572 printf("proberegister: no probe CCB, "
5573 "can't register device\n");
5574 return(CAM_REQ_CMP_ERR);
5575 }
5576
5577 softc = (probe_softc *)malloc(sizeof(*softc), M_TEMP, M_NOWAIT);
5578
5579 if (softc == NULL) {
5580 printf("proberegister: Unable to probe new device. "
5581 "Unable to allocate softc\n");
5582 return(CAM_REQ_CMP_ERR);
5583 }
5584 TAILQ_INIT(&softc->request_ccbs);
5585 TAILQ_INSERT_TAIL(&softc->request_ccbs, &request_ccb->ccb_h,
5586 periph_links.tqe);
5587 softc->flags = 0;
5588 periph->softc = softc;
5589 cam_periph_acquire(periph);
5590 /*
5591 * Ensure we've waited at least a bus settle
5592 * delay before attempting to probe the device.
5593 * For HBAs that don't do bus resets, this won't make a difference.
5594 */
5595 cam_periph_freeze_after_event(periph, &periph->path->bus->last_reset,
5596 scsi_delay);
5597 probeschedule(periph);
5598 return(CAM_REQ_CMP);
5599 }
5600
5601 static void
5602 probeschedule(struct cam_periph *periph)
5603 {
5604 struct ccb_pathinq cpi;
5605 union ccb *ccb;
5606 probe_softc *softc;
5607
5608 softc = (probe_softc *)periph->softc;
5609 ccb = (union ccb *)TAILQ_FIRST(&softc->request_ccbs);
5610
5611 xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1);
5612 cpi.ccb_h.func_code = XPT_PATH_INQ;
5613 xpt_action((union ccb *)&cpi);
5614
5615 /*
5616 * If a device has gone away and another device, or the same one,
5617 * is back in the same place, it should have a unit attention
5618 * condition pending. It will not report the unit attention in
5619 * response to an inquiry, which may leave invalid transfer
5620 * negotiations in effect. The TUR will reveal the unit attention
5621 * condition. Only send the TUR for lun 0, since some devices
5622 * will get confused by commands other than inquiry to non-existent
5623 * luns. If you think a device has gone away start your scan from
5624 * lun 0. This will insure that any bogus transfer settings are
5625 * invalidated.
5626 *
5627 * If we haven't seen the device before and the controller supports
5628 * some kind of transfer negotiation, negotiate with the first
5629 * sent command if no bus reset was performed at startup. This
5630 * ensures that the device is not confused by transfer negotiation
5631 * settings left over by loader or BIOS action.
5632 */
5633 if (((ccb->ccb_h.path->device->flags & CAM_DEV_UNCONFIGURED) == 0)
5634 && (ccb->ccb_h.target_lun == 0)) {
5635 softc->action = PROBE_TUR;
5636 } else if ((cpi.hba_inquiry & (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE)) != 0
5637 && (cpi.hba_misc & PIM_NOBUSRESET) != 0) {
5638 proberequestdefaultnegotiation(periph);
5639 softc->action = PROBE_INQUIRY;
5640 } else {
5641 softc->action = PROBE_INQUIRY;
5642 }
5643
5644 if (ccb->crcn.flags & CAM_EXPECT_INQ_CHANGE)
5645 softc->flags |= PROBE_NO_ANNOUNCE;
5646 else
5647 softc->flags &= ~PROBE_NO_ANNOUNCE;
5648
5649 xpt_schedule(periph, ccb->ccb_h.pinfo.priority);
5650 }
5651
5652 static void
5653 probestart(struct cam_periph *periph, union ccb *start_ccb)
5654 {
5655 /* Probe the device that our peripheral driver points to */
5656 struct ccb_scsiio *csio;
5657 probe_softc *softc;
5658
5659 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("probestart\n"));
5660
5661 softc = (probe_softc *)periph->softc;
5662 csio = &start_ccb->csio;
5663
5664 switch (softc->action) {
5665 case PROBE_TUR:
5666 case PROBE_TUR_FOR_NEGOTIATION:
5667 {
5668 scsi_test_unit_ready(csio,
5669 /*retries*/4,
5670 probedone,
5671 MSG_SIMPLE_Q_TAG,
5672 SSD_FULL_SIZE,
5673 /*timeout*/60000);
5674 break;
5675 }
5676 case PROBE_INQUIRY:
5677 case PROBE_FULL_INQUIRY:
5678 {
5679 u_int inquiry_len;
5680 struct scsi_inquiry_data *inq_buf;
5681
5682 inq_buf = &periph->path->device->inq_data;
5683 /*
5684 * If the device is currently configured, we calculate an
5685 * MD5 checksum of the inquiry data, and if the serial number
5686 * length is greater than 0, add the serial number data
5687 * into the checksum as well. Once the inquiry and the
5688 * serial number check finish, we attempt to figure out
5689 * whether we still have the same device.
5690 */
5691 if ((periph->path->device->flags & CAM_DEV_UNCONFIGURED) == 0) {
5692
5693 MD5Init(&softc->context);
5694 MD5Update(&softc->context, (unsigned char *)inq_buf,
5695 sizeof(struct scsi_inquiry_data));
5696 softc->flags |= PROBE_INQUIRY_CKSUM;
5697 if (periph->path->device->serial_num_len > 0) {
5698 MD5Update(&softc->context,
5699 periph->path->device->serial_num,
5700 periph->path->device->serial_num_len);
5701 softc->flags |= PROBE_SERIAL_CKSUM;
5702 }
5703 MD5Final(softc->digest, &softc->context);
5704 }
5705
5706 if (softc->action == PROBE_INQUIRY)
5707 inquiry_len = SHORT_INQUIRY_LENGTH;
5708 else
5709 inquiry_len = inq_buf->additional_length
5710 + offsetof(struct scsi_inquiry_data,
5711 additional_length) + 1;
5712
5713 /*
5714 * Some parallel SCSI devices fail to send an
5715 * ignore wide residue message when dealing with
5716 * odd length inquiry requests. Round up to be
5717 * safe.
5718 */
5719 inquiry_len = roundup2(inquiry_len, 2);
5720
5721 scsi_inquiry(csio,
5722 /*retries*/4,
5723 probedone,
5724 MSG_SIMPLE_Q_TAG,
5725 (u_int8_t *)inq_buf,
5726 inquiry_len,
5727 /*evpd*/FALSE,
5728 /*page_code*/0,
5729 SSD_MIN_SIZE,
5730 /*timeout*/60 * 1000);
5731 break;
5732 }
5733 case PROBE_MODE_SENSE:
5734 {
5735 void *mode_buf;
5736 int mode_buf_len;
5737
5738 mode_buf_len = sizeof(struct scsi_mode_header_6)
5739 + sizeof(struct scsi_mode_blk_desc)
5740 + sizeof(struct scsi_control_page);
5741 mode_buf = malloc(mode_buf_len, M_TEMP, M_NOWAIT);
5742 if (mode_buf != NULL) {
5743 scsi_mode_sense(csio,
5744 /*retries*/4,
5745 probedone,
5746 MSG_SIMPLE_Q_TAG,
5747 /*dbd*/FALSE,
5748 SMS_PAGE_CTRL_CURRENT,
5749 SMS_CONTROL_MODE_PAGE,
5750 mode_buf,
5751 mode_buf_len,
5752 SSD_FULL_SIZE,
5753 /*timeout*/60000);
5754 break;
5755 }
5756 xpt_print_path(periph->path);
5757 printf("Unable to mode sense control page - malloc failure\n");
5758 softc->action = PROBE_SERIAL_NUM;
5759 }
5760 /* FALLTHROUGH */
5761 case PROBE_SERIAL_NUM:
5762 {
5763 struct scsi_vpd_unit_serial_number *serial_buf;
5764 struct cam_ed* device;
5765
5766 serial_buf = NULL;
5767 device = periph->path->device;
5768 device->serial_num = NULL;
5769 device->serial_num_len = 0;
5770
5771 if ((device->quirk->quirks & CAM_QUIRK_NOSERIAL) == 0)
5772 serial_buf = (struct scsi_vpd_unit_serial_number *)
5773 malloc(sizeof(*serial_buf), M_TEMP,
5774 M_NOWAIT | M_ZERO);
5775
5776 if (serial_buf != NULL) {
5777 scsi_inquiry(csio,
5778 /*retries*/4,
5779 probedone,
5780 MSG_SIMPLE_Q_TAG,
5781 (u_int8_t *)serial_buf,
5782 sizeof(*serial_buf),
5783 /*evpd*/TRUE,
5784 SVPD_UNIT_SERIAL_NUMBER,
5785 SSD_MIN_SIZE,
5786 /*timeout*/60 * 1000);
5787 break;
5788 }
5789 /*
5790 * We'll have to do without, let our probedone
5791 * routine finish up for us.
5792 */
5793 start_ccb->csio.data_ptr = NULL;
5794 probedone(periph, start_ccb);
5795 return;
5796 }
5797 }
5798 xpt_action(start_ccb);
5799 }
5800
5801 static void
5802 proberequestdefaultnegotiation(struct cam_periph *periph)
5803 {
5804 struct ccb_trans_settings cts;
5805
5806 xpt_setup_ccb(&cts.ccb_h, periph->path, /*priority*/1);
5807 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
5808 #ifdef CAM_NEW_TRAN_CODE
5809 cts.type = CTS_TYPE_USER_SETTINGS;
5810 #else /* CAM_NEW_TRAN_CODE */
5811 cts.flags = CCB_TRANS_USER_SETTINGS;
5812 #endif /* CAM_NEW_TRAN_CODE */
5813 xpt_action((union ccb *)&cts);
5814 cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
5815 #ifdef CAM_NEW_TRAN_CODE
5816 cts.type = CTS_TYPE_CURRENT_SETTINGS;
5817 #else /* CAM_NEW_TRAN_CODE */
5818 cts.flags &= ~CCB_TRANS_USER_SETTINGS;
5819 cts.flags |= CCB_TRANS_CURRENT_SETTINGS;
5820 #endif /* CAM_NEW_TRAN_CODE */
5821 xpt_action((union ccb *)&cts);
5822 }
5823
5824 static void
5825 probedone(struct cam_periph *periph, union ccb *done_ccb)
5826 {
5827 probe_softc *softc;
5828 struct cam_path *path;
5829 u_int32_t priority;
5830
5831 CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("probedone\n"));
5832
5833 softc = (probe_softc *)periph->softc;
5834 path = done_ccb->ccb_h.path;
5835 priority = done_ccb->ccb_h.pinfo.priority;
5836
5837 switch (softc->action) {
5838 case PROBE_TUR:
5839 {
5840 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
5841
5842 if (cam_periph_error(done_ccb, 0,
5843 SF_NO_PRINT, NULL) == ERESTART)
5844 return;
5845 else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
5846 /* Don't wedge the queue */
5847 xpt_release_devq(done_ccb->ccb_h.path,
5848 /*count*/1,
5849 /*run_queue*/TRUE);
5850 }
5851 softc->action = PROBE_INQUIRY;
5852 xpt_release_ccb(done_ccb);
5853 xpt_schedule(periph, priority);
5854 return;
5855 }
5856 case PROBE_INQUIRY:
5857 case PROBE_FULL_INQUIRY:
5858 {
5859 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
5860 struct scsi_inquiry_data *inq_buf;
5861 u_int8_t periph_qual;
5862
5863 path->device->flags |= CAM_DEV_INQUIRY_DATA_VALID;
5864 inq_buf = &path->device->inq_data;
5865
5866 periph_qual = SID_QUAL(inq_buf);
5867
5868 switch(periph_qual) {
5869 case SID_QUAL_LU_CONNECTED:
5870 {
5871 u_int8_t len;
5872
5873 /*
5874 * We conservatively request only
5875 * SHORT_INQUIRY_LEN bytes of inquiry
5876 * information during our first try
5877 * at sending an INQUIRY. If the device
5878 * has more information to give,
5879 * perform a second request specifying
5880 * the amount of information the device
5881 * is willing to give.
5882 */
5883 len = inq_buf->additional_length
5884 + offsetof(struct scsi_inquiry_data,
5885 additional_length) + 1;
5886 if (softc->action == PROBE_INQUIRY
5887 && len > SHORT_INQUIRY_LENGTH) {
5888 softc->action = PROBE_FULL_INQUIRY;
5889 xpt_release_ccb(done_ccb);
5890 xpt_schedule(periph, priority);
5891 return;
5892 }
5893
5894 xpt_find_quirk(path->device);
5895
5896 #ifdef CAM_NEW_TRAN_CODE
5897 xpt_devise_transport(path);
5898 #endif /* CAM_NEW_TRAN_CODE */
5899 if ((inq_buf->flags & SID_CmdQue) != 0)
5900 softc->action = PROBE_MODE_SENSE;
5901 else
5902 softc->action = PROBE_SERIAL_NUM;
5903
5904 path->device->flags &= ~CAM_DEV_UNCONFIGURED;
5905
5906 xpt_release_ccb(done_ccb);
5907 xpt_schedule(periph, priority);
5908 return;
5909 }
5910 default:
5911 break;
5912 }
5913 } else if (cam_periph_error(done_ccb, 0,
5914 done_ccb->ccb_h.target_lun > 0
5915 ? SF_RETRY_UA|SF_QUIET_IR
5916 : SF_RETRY_UA,
5917 &softc->saved_ccb) == ERESTART) {
5918 return;
5919 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
5920 /* Don't wedge the queue */
5921 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
5922 /*run_queue*/TRUE);
5923 }
5924 /*
5925 * If we get to this point, we got an error status back
5926 * from the inquiry and the error status doesn't require
5927 * automatically retrying the command. Therefore, the
5928 * inquiry failed. If we had inquiry information before
5929 * for this device, but this latest inquiry command failed,
5930 * the device has probably gone away. If this device isn't
5931 * already marked unconfigured, notify the peripheral
5932 * drivers that this device is no more.
5933 */
5934 if ((path->device->flags & CAM_DEV_UNCONFIGURED) == 0)
5935 /* Send the async notification. */
5936 xpt_async(AC_LOST_DEVICE, path, NULL);
5937
5938 xpt_release_ccb(done_ccb);
5939 break;
5940 }
5941 case PROBE_MODE_SENSE:
5942 {
5943 struct ccb_scsiio *csio;
5944 struct scsi_mode_header_6 *mode_hdr;
5945
5946 csio = &done_ccb->csio;
5947 mode_hdr = (struct scsi_mode_header_6 *)csio->data_ptr;
5948 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
5949 struct scsi_control_page *page;
5950 u_int8_t *offset;
5951
5952 offset = ((u_int8_t *)&mode_hdr[1])
5953 + mode_hdr->blk_desc_len;
5954 page = (struct scsi_control_page *)offset;
5955 path->device->queue_flags = page->queue_flags;
5956 } else if (cam_periph_error(done_ccb, 0,
5957 SF_RETRY_UA|SF_NO_PRINT,
5958 &softc->saved_ccb) == ERESTART) {
5959 return;
5960 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
5961 /* Don't wedge the queue */
5962 xpt_release_devq(done_ccb->ccb_h.path,
5963 /*count*/1, /*run_queue*/TRUE);
5964 }
5965 xpt_release_ccb(done_ccb);
5966 free(mode_hdr, M_TEMP);
5967 softc->action = PROBE_SERIAL_NUM;
5968 xpt_schedule(periph, priority);
5969 return;
5970 }
5971 case PROBE_SERIAL_NUM:
5972 {
5973 struct ccb_scsiio *csio;
5974 struct scsi_vpd_unit_serial_number *serial_buf;
5975 u_int32_t priority;
5976 int changed;
5977 int have_serialnum;
5978
5979 changed = 1;
5980 have_serialnum = 0;
5981 csio = &done_ccb->csio;
5982 priority = done_ccb->ccb_h.pinfo.priority;
5983 serial_buf =
5984 (struct scsi_vpd_unit_serial_number *)csio->data_ptr;
5985
5986 /* Clean up from previous instance of this device */
5987 if (path->device->serial_num != NULL) {
5988 free(path->device->serial_num, M_CAMXPT);
5989 path->device->serial_num = NULL;
5990 path->device->serial_num_len = 0;
5991 }
5992
5993 if (serial_buf == NULL) {
5994 /*
5995 * Don't process the command as it was never sent
5996 */
5997 } else if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP
5998 && (serial_buf->length > 0)) {
5999
6000 have_serialnum = 1;
6001 path->device->serial_num =
6002 (u_int8_t *)malloc((serial_buf->length + 1),
6003 M_CAMXPT, M_NOWAIT);
6004 if (path->device->serial_num != NULL) {
6005 bcopy(serial_buf->serial_num,
6006 path->device->serial_num,
6007 serial_buf->length);
6008 path->device->serial_num_len =
6009 serial_buf->length;
6010 path->device->serial_num[serial_buf->length]
6011 = '\0';
6012 }
6013 } else if (cam_periph_error(done_ccb, 0,
6014 SF_RETRY_UA|SF_NO_PRINT,
6015 &softc->saved_ccb) == ERESTART) {
6016 return;
6017 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
6018 /* Don't wedge the queue */
6019 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
6020 /*run_queue*/TRUE);
6021 }
6022
6023 /*
6024 * Let's see if we have seen this device before.
6025 */
6026 if ((softc->flags & PROBE_INQUIRY_CKSUM) != 0) {
6027 MD5_CTX context;
6028 u_int8_t digest[16];
6029
6030 MD5Init(&context);
6031
6032 MD5Update(&context,
6033 (unsigned char *)&path->device->inq_data,
6034 sizeof(struct scsi_inquiry_data));
6035
6036 if (have_serialnum)
6037 MD5Update(&context, serial_buf->serial_num,
6038 serial_buf->length);
6039
6040 MD5Final(digest, &context);
6041 if (bcmp(softc->digest, digest, 16) == 0)
6042 changed = 0;
6043
6044 /*
6045 * XXX Do we need to do a TUR in order to ensure
6046 * that the device really hasn't changed???
6047 */
6048 if ((changed != 0)
6049 && ((softc->flags & PROBE_NO_ANNOUNCE) == 0))
6050 xpt_async(AC_LOST_DEVICE, path, NULL);
6051 }
6052 if (serial_buf != NULL)
6053 free(serial_buf, M_TEMP);
6054
6055 if (changed != 0) {
6056 /*
6057 * Now that we have all the necessary
6058 * information to safely perform transfer
6059 * negotiations... Controllers don't perform
6060 * any negotiation or tagged queuing until
6061 * after the first XPT_SET_TRAN_SETTINGS ccb is
6062 * received. So, on a new device, just retreive
6063 * the user settings, and set them as the current
6064 * settings to set the device up.
6065 */
6066 proberequestdefaultnegotiation(periph);
6067 xpt_release_ccb(done_ccb);
6068
6069 /*
6070 * Perform a TUR to allow the controller to
6071 * perform any necessary transfer negotiation.
6072 */
6073 softc->action = PROBE_TUR_FOR_NEGOTIATION;
6074 xpt_schedule(periph, priority);
6075 return;
6076 }
6077 xpt_release_ccb(done_ccb);
6078 break;
6079 }
6080 case PROBE_TUR_FOR_NEGOTIATION:
6081 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
6082 /* Don't wedge the queue */
6083 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
6084 /*run_queue*/TRUE);
6085 }
6086
6087 path->device->flags &= ~CAM_DEV_UNCONFIGURED;
6088
6089 if ((softc->flags & PROBE_NO_ANNOUNCE) == 0) {
6090 /* Inform the XPT that a new device has been found */
6091 done_ccb->ccb_h.func_code = XPT_GDEV_TYPE;
6092 xpt_action(done_ccb);
6093
6094 xpt_async(AC_FOUND_DEVICE, done_ccb->ccb_h.path,
6095 done_ccb);
6096 }
6097 xpt_release_ccb(done_ccb);
6098 break;
6099 }
6100 done_ccb = (union ccb *)TAILQ_FIRST(&softc->request_ccbs);
6101 TAILQ_REMOVE(&softc->request_ccbs, &done_ccb->ccb_h, periph_links.tqe);
6102 done_ccb->ccb_h.status = CAM_REQ_CMP;
6103 xpt_done(done_ccb);
6104 if (TAILQ_FIRST(&softc->request_ccbs) == NULL) {
6105 cam_periph_invalidate(periph);
6106 cam_periph_release(periph);
6107 } else {
6108 probeschedule(periph);
6109 }
6110 }
6111
6112 static void
6113 probecleanup(struct cam_periph *periph)
6114 {
6115 free(periph->softc, M_TEMP);
6116 }
6117
6118 static void
6119 xpt_find_quirk(struct cam_ed *device)
6120 {
6121 caddr_t match;
6122
6123 match = cam_quirkmatch((caddr_t)&device->inq_data,
6124 (caddr_t)xpt_quirk_table,
6125 sizeof(xpt_quirk_table)/sizeof(*xpt_quirk_table),
6126 sizeof(*xpt_quirk_table), scsi_inquiry_match);
6127
6128 if (match == NULL)
6129 panic("xpt_find_quirk: device didn't match wildcard entry!!");
6130
6131 device->quirk = (struct xpt_quirk_entry *)match;
6132 }
6133
6134 static int
6135 sysctl_cam_search_luns(SYSCTL_HANDLER_ARGS)
6136 {
6137 int error, bool;
6138
6139 bool = cam_srch_hi;
6140 error = sysctl_handle_int(oidp, &bool, sizeof(bool), req);
6141 if (error != 0 || req->newptr == NULL)
6142 return (error);
6143 if (bool == 0 || bool == 1) {
6144 cam_srch_hi = bool;
6145 return (0);
6146 } else {
6147 return (EINVAL);
6148 }
6149 }
6150
6151 #ifdef CAM_NEW_TRAN_CODE
6152
6153 static void
6154 xpt_devise_transport(struct cam_path *path)
6155 {
6156 struct ccb_pathinq cpi;
6157 struct ccb_trans_settings cts;
6158 struct scsi_inquiry_data *inq_buf;
6159
6160 /* Get transport information from the SIM */
6161 xpt_setup_ccb(&cpi.ccb_h, path, /*priority*/1);
6162 cpi.ccb_h.func_code = XPT_PATH_INQ;
6163 xpt_action((union ccb *)&cpi);
6164
6165 inq_buf = NULL;
6166 if ((path->device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0)
6167 inq_buf = &path->device->inq_data;
6168 path->device->protocol = PROTO_SCSI;
6169 path->device->protocol_version =
6170 inq_buf != NULL ? SID_ANSI_REV(inq_buf) : cpi.protocol_version;
6171 path->device->transport = cpi.transport;
6172 path->device->transport_version = cpi.transport_version;
6173
6174 /*
6175 * Any device not using SPI3 features should
6176 * be considered SPI2 or lower.
6177 */
6178 if (inq_buf != NULL) {
6179 if (path->device->transport == XPORT_SPI
6180 && (inq_buf->spi3data & SID_SPI_MASK) == 0
6181 && path->device->transport_version > 2)
6182 path->device->transport_version = 2;
6183 } else {
6184 struct cam_ed* otherdev;
6185
6186 for (otherdev = TAILQ_FIRST(&path->target->ed_entries);
6187 otherdev != NULL;
6188 otherdev = TAILQ_NEXT(otherdev, links)) {
6189 if (otherdev != path->device)
6190 break;
6191 }
6192
6193 if (otherdev != NULL) {
6194 /*
6195 * Initially assume the same versioning as
6196 * prior luns for this target.
6197 */
6198 path->device->protocol_version =
6199 otherdev->protocol_version;
6200 path->device->transport_version =
6201 otherdev->transport_version;
6202 } else {
6203 /* Until we know better, opt for safty */
6204 path->device->protocol_version = 2;
6205 if (path->device->transport == XPORT_SPI)
6206 path->device->transport_version = 2;
6207 else
6208 path->device->transport_version = 0;
6209 }
6210 }
6211
6212 /*
6213 * XXX
6214 * For a device compliant with SPC-2 we should be able
6215 * to determine the transport version supported by
6216 * scrutinizing the version descriptors in the
6217 * inquiry buffer.
6218 */
6219
6220 /* Tell the controller what we think */
6221 xpt_setup_ccb(&cts.ccb_h, path, /*priority*/1);
6222 cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
6223 cts.type = CTS_TYPE_CURRENT_SETTINGS;
6224 cts.transport = path->device->transport;
6225 cts.transport_version = path->device->transport_version;
6226 cts.protocol = path->device->protocol;
6227 cts.protocol_version = path->device->protocol_version;
6228 cts.proto_specific.valid = 0;
6229 cts.xport_specific.valid = 0;
6230 xpt_action((union ccb *)&cts);
6231 }
6232
6233 static void
6234 xpt_set_transfer_settings(struct ccb_trans_settings *cts, struct cam_ed *device,
6235 int async_update)
6236 {
6237 struct ccb_pathinq cpi;
6238 struct ccb_trans_settings cur_cts;
6239 struct ccb_trans_settings_scsi *scsi;
6240 struct ccb_trans_settings_scsi *cur_scsi;
6241 struct cam_sim *sim;
6242 struct scsi_inquiry_data *inq_data;
6243
6244 if (device == NULL) {
6245 cts->ccb_h.status = CAM_PATH_INVALID;
6246 xpt_done((union ccb *)cts);
6247 return;
6248 }
6249
6250 if (cts->protocol == PROTO_UNKNOWN
6251 || cts->protocol == PROTO_UNSPECIFIED) {
6252 cts->protocol = device->protocol;
6253 cts->protocol_version = device->protocol_version;
6254 }
6255
6256 if (cts->protocol_version == PROTO_VERSION_UNKNOWN
6257 || cts->protocol_version == PROTO_VERSION_UNSPECIFIED)
6258 cts->protocol_version = device->protocol_version;
6259
6260 if (cts->protocol != device->protocol) {
6261 xpt_print_path(cts->ccb_h.path);
6262 printf("Uninitialized Protocol %x:%x?\n",
6263 cts->protocol, device->protocol);
6264 cts->protocol = device->protocol;
6265 }
6266
6267 if (cts->protocol_version > device->protocol_version) {
6268 if (bootverbose) {
6269 xpt_print_path(cts->ccb_h.path);
6270 printf("Down reving Protocol Version from %d to %d?\n",
6271 cts->protocol_version, device->protocol_version);
6272 }
6273 cts->protocol_version = device->protocol_version;
6274 }
6275
6276 if (cts->transport == XPORT_UNKNOWN
6277 || cts->transport == XPORT_UNSPECIFIED) {
6278 cts->transport = device->transport;
6279 cts->transport_version = device->transport_version;
6280 }
6281
6282 if (cts->transport_version == XPORT_VERSION_UNKNOWN
6283 || cts->transport_version == XPORT_VERSION_UNSPECIFIED)
6284 cts->transport_version = device->transport_version;
6285
6286 if (cts->transport != device->transport) {
6287 xpt_print_path(cts->ccb_h.path);
6288 printf("Uninitialized Transport %x:%x?\n",
6289 cts->transport, device->transport);
6290 cts->transport = device->transport;
6291 }
6292
6293 if (cts->transport_version > device->transport_version) {
6294 if (bootverbose) {
6295 xpt_print_path(cts->ccb_h.path);
6296 printf("Down reving Transport Version from %d to %d?\n",
6297 cts->transport_version,
6298 device->transport_version);
6299 }
6300 cts->transport_version = device->transport_version;
6301 }
6302
6303 sim = cts->ccb_h.path->bus->sim;
6304
6305 /*
6306 * Nothing more of interest to do unless
6307 * this is a device connected via the
6308 * SCSI protocol.
6309 */
6310 if (cts->protocol != PROTO_SCSI) {
6311 if (async_update == FALSE)
6312 (*(sim->sim_action))(sim, (union ccb *)cts);
6313 return;
6314 }
6315
6316 inq_data = &device->inq_data;
6317 scsi = &cts->proto_specific.scsi;
6318 xpt_setup_ccb(&cpi.ccb_h, cts->ccb_h.path, /*priority*/1);
6319 cpi.ccb_h.func_code = XPT_PATH_INQ;
6320 xpt_action((union ccb *)&cpi);
6321
6322 /* SCSI specific sanity checking */
6323 if ((cpi.hba_inquiry & PI_TAG_ABLE) == 0
6324 || (inq_data->flags & SID_CmdQue) == 0
6325 || (device->queue_flags & SCP_QUEUE_DQUE) != 0
6326 || (device->quirk->mintags == 0)) {
6327 /*
6328 * Can't tag on hardware that doesn't support tags,
6329 * doesn't have it enabled, or has broken tag support.
6330 */
6331 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
6332 }
6333
6334 if (async_update == FALSE) {
6335 /*
6336 * Perform sanity checking against what the
6337 * controller and device can do.
6338 */
6339 xpt_setup_ccb(&cur_cts.ccb_h, cts->ccb_h.path, /*priority*/1);
6340 cur_cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
6341 cur_cts.type = cts->type;
6342 xpt_action((union ccb *)&cur_cts);
6343
6344 cur_scsi = &cur_cts.proto_specific.scsi;
6345 if ((scsi->valid & CTS_SCSI_VALID_TQ) == 0) {
6346 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
6347 scsi->flags |= cur_scsi->flags & CTS_SCSI_FLAGS_TAG_ENB;
6348 }
6349 if ((cur_scsi->valid & CTS_SCSI_VALID_TQ) == 0)
6350 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
6351 }
6352
6353 /* SPI specific sanity checking */
6354 if (cts->transport == XPORT_SPI && async_update == FALSE) {
6355 u_int spi3caps;
6356 struct ccb_trans_settings_spi *spi;
6357 struct ccb_trans_settings_spi *cur_spi;
6358
6359 spi = &cts->xport_specific.spi;
6360
6361 cur_spi = &cur_cts.xport_specific.spi;
6362
6363 /* Fill in any gaps in what the user gave us */
6364 if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0)
6365 spi->sync_period = cur_spi->sync_period;
6366 if ((cur_spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0)
6367 spi->sync_period = 0;
6368 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0)
6369 spi->sync_offset = cur_spi->sync_offset;
6370 if ((cur_spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0)
6371 spi->sync_offset = 0;
6372 if ((spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0)
6373 spi->ppr_options = cur_spi->ppr_options;
6374 if ((cur_spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0)
6375 spi->ppr_options = 0;
6376 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) == 0)
6377 spi->bus_width = cur_spi->bus_width;
6378 if ((cur_spi->valid & CTS_SPI_VALID_BUS_WIDTH) == 0)
6379 spi->bus_width = 0;
6380 if ((spi->valid & CTS_SPI_VALID_DISC) == 0) {
6381 spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
6382 spi->flags |= cur_spi->flags & CTS_SPI_FLAGS_DISC_ENB;
6383 }
6384 if ((cur_spi->valid & CTS_SPI_VALID_DISC) == 0)
6385 spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
6386 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0
6387 && (inq_data->flags & SID_Sync) == 0
6388 && cts->type == CTS_TYPE_CURRENT_SETTINGS)
6389 || ((cpi.hba_inquiry & PI_SDTR_ABLE) == 0)
6390 || (cur_spi->sync_offset == 0)
6391 || (cur_spi->sync_period == 0)) {
6392 /* Force async */
6393 spi->sync_period = 0;
6394 spi->sync_offset = 0;
6395 }
6396
6397 switch (spi->bus_width) {
6398 case MSG_EXT_WDTR_BUS_32_BIT:
6399 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0
6400 || (inq_data->flags & SID_WBus32) != 0
6401 || cts->type == CTS_TYPE_USER_SETTINGS)
6402 && (cpi.hba_inquiry & PI_WIDE_32) != 0)
6403 break;
6404 /* Fall Through to 16-bit */
6405 case MSG_EXT_WDTR_BUS_16_BIT:
6406 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0
6407 || (inq_data->flags & SID_WBus16) != 0
6408 || cts->type == CTS_TYPE_USER_SETTINGS)
6409 && (cpi.hba_inquiry & PI_WIDE_16) != 0) {
6410 spi->bus_width = MSG_EXT_WDTR_BUS_16_BIT;
6411 break;
6412 }
6413 /* Fall Through to 8-bit */
6414 default: /* New bus width?? */
6415 case MSG_EXT_WDTR_BUS_8_BIT:
6416 /* All targets can do this */
6417 spi->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
6418 break;
6419 }
6420
6421 spi3caps = cpi.xport_specific.spi.ppr_options;
6422 if ((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0
6423 && cts->type == CTS_TYPE_CURRENT_SETTINGS)
6424 spi3caps &= inq_data->spi3data;
6425
6426 if ((spi3caps & SID_SPI_CLOCK_DT) == 0)
6427 spi->ppr_options &= ~MSG_EXT_PPR_DT_REQ;
6428
6429 if ((spi3caps & SID_SPI_IUS) == 0)
6430 spi->ppr_options &= ~MSG_EXT_PPR_IU_REQ;
6431
6432 if ((spi3caps & SID_SPI_QAS) == 0)
6433 spi->ppr_options &= ~MSG_EXT_PPR_QAS_REQ;
6434
6435 /* No SPI Transfer settings are allowed unless we are wide */
6436 if (spi->bus_width == 0)
6437 spi->ppr_options = 0;
6438
6439 if ((spi->flags & CTS_SPI_FLAGS_DISC_ENB) == 0) {
6440 /*
6441 * Can't tag queue without disconnection.
6442 */
6443 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
6444 scsi->valid |= CTS_SCSI_VALID_TQ;
6445 }
6446
6447 /*
6448 * If we are currently performing tagged transactions to
6449 * this device and want to change its negotiation parameters,
6450 * go non-tagged for a bit to give the controller a chance to
6451 * negotiate unhampered by tag messages.
6452 */
6453 if (cts->type == CTS_TYPE_CURRENT_SETTINGS
6454 && (device->inq_flags & SID_CmdQue) != 0
6455 && (scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0
6456 && (spi->flags & (CTS_SPI_VALID_SYNC_RATE|
6457 CTS_SPI_VALID_SYNC_OFFSET|
6458 CTS_SPI_VALID_BUS_WIDTH)) != 0)
6459 xpt_toggle_tags(cts->ccb_h.path);
6460 }
6461
6462 if (cts->type == CTS_TYPE_CURRENT_SETTINGS
6463 && (scsi->valid & CTS_SCSI_VALID_TQ) != 0) {
6464 int device_tagenb;
6465
6466 /*
6467 * If we are transitioning from tags to no-tags or
6468 * vice-versa, we need to carefully freeze and restart
6469 * the queue so that we don't overlap tagged and non-tagged
6470 * commands. We also temporarily stop tags if there is
6471 * a change in transfer negotiation settings to allow
6472 * "tag-less" negotiation.
6473 */
6474 if ((device->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
6475 || (device->inq_flags & SID_CmdQue) != 0)
6476 device_tagenb = TRUE;
6477 else
6478 device_tagenb = FALSE;
6479
6480 if (((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0
6481 && device_tagenb == FALSE)
6482 || ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) == 0
6483 && device_tagenb == TRUE)) {
6484
6485 if ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0) {
6486 /*
6487 * Delay change to use tags until after a
6488 * few commands have gone to this device so
6489 * the controller has time to perform transfer
6490 * negotiations without tagged messages getting
6491 * in the way.
6492 */
6493 device->tag_delay_count = CAM_TAG_DELAY_COUNT;
6494 device->flags |= CAM_DEV_TAG_AFTER_COUNT;
6495 } else {
6496 struct ccb_relsim crs;
6497
6498 xpt_freeze_devq(cts->ccb_h.path, /*count*/1);
6499 device->inq_flags &= ~SID_CmdQue;
6500 xpt_dev_ccbq_resize(cts->ccb_h.path,
6501 sim->max_dev_openings);
6502 device->flags &= ~CAM_DEV_TAG_AFTER_COUNT;
6503 device->tag_delay_count = 0;
6504
6505 xpt_setup_ccb(&crs.ccb_h, cts->ccb_h.path,
6506 /*priority*/1);
6507 crs.ccb_h.func_code = XPT_REL_SIMQ;
6508 crs.release_flags = RELSIM_RELEASE_AFTER_QEMPTY;
6509 crs.openings
6510 = crs.release_timeout
6511 = crs.qfrozen_cnt
6512 = 0;
6513 xpt_action((union ccb *)&crs);
6514 }
6515 }
6516 }
6517 if (async_update == FALSE)
6518 (*(sim->sim_action))(sim, (union ccb *)cts);
6519 }
6520
6521 #else /* CAM_NEW_TRAN_CODE */
6522
6523 static void
6524 xpt_set_transfer_settings(struct ccb_trans_settings *cts, struct cam_ed *device,
6525 int async_update)
6526 {
6527 struct cam_sim *sim;
6528 int qfrozen;
6529
6530 sim = cts->ccb_h.path->bus->sim;
6531 if (async_update == FALSE) {
6532 struct scsi_inquiry_data *inq_data;
6533 struct ccb_pathinq cpi;
6534 struct ccb_trans_settings cur_cts;
6535
6536 if (device == NULL) {
6537 cts->ccb_h.status = CAM_PATH_INVALID;
6538 xpt_done((union ccb *)cts);
6539 return;
6540 }
6541
6542 /*
6543 * Perform sanity checking against what the
6544 * controller and device can do.
6545 */
6546 xpt_setup_ccb(&cpi.ccb_h, cts->ccb_h.path, /*priority*/1);
6547 cpi.ccb_h.func_code = XPT_PATH_INQ;
6548 xpt_action((union ccb *)&cpi);
6549 xpt_setup_ccb(&cur_cts.ccb_h, cts->ccb_h.path, /*priority*/1);
6550 cur_cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
6551 cur_cts.flags = CCB_TRANS_CURRENT_SETTINGS;
6552 xpt_action((union ccb *)&cur_cts);
6553 inq_data = &device->inq_data;
6554
6555 /* Fill in any gaps in what the user gave us */
6556 if ((cts->valid & CCB_TRANS_SYNC_RATE_VALID) == 0)
6557 cts->sync_period = cur_cts.sync_period;
6558 if ((cts->valid & CCB_TRANS_SYNC_OFFSET_VALID) == 0)
6559 cts->sync_offset = cur_cts.sync_offset;
6560 if ((cts->valid & CCB_TRANS_BUS_WIDTH_VALID) == 0)
6561 cts->bus_width = cur_cts.bus_width;
6562 if ((cts->valid & CCB_TRANS_DISC_VALID) == 0) {
6563 cts->flags &= ~CCB_TRANS_DISC_ENB;
6564 cts->flags |= cur_cts.flags & CCB_TRANS_DISC_ENB;
6565 }
6566 if ((cts->valid & CCB_TRANS_TQ_VALID) == 0) {
6567 cts->flags &= ~CCB_TRANS_TAG_ENB;
6568 cts->flags |= cur_cts.flags & CCB_TRANS_TAG_ENB;
6569 }
6570
6571 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0
6572 && (inq_data->flags & SID_Sync) == 0)
6573 || ((cpi.hba_inquiry & PI_SDTR_ABLE) == 0)
6574 || (cts->sync_offset == 0)
6575 || (cts->sync_period == 0)) {
6576 /* Force async */
6577 cts->sync_period = 0;
6578 cts->sync_offset = 0;
6579 } else if ((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0
6580 && (inq_data->spi3data & SID_SPI_CLOCK_DT) == 0
6581 && cts->sync_period <= 0x9) {
6582 /*
6583 * Don't allow DT transmission rates if the
6584 * device does not support it.
6585 */
6586 cts->sync_period = 0xa;
6587 }
6588
6589 switch (cts->bus_width) {
6590 case MSG_EXT_WDTR_BUS_32_BIT:
6591 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0
6592 || (inq_data->flags & SID_WBus32) != 0)
6593 && (cpi.hba_inquiry & PI_WIDE_32) != 0)
6594 break;
6595 /* FALLTHROUGH to 16-bit */
6596 case MSG_EXT_WDTR_BUS_16_BIT:
6597 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0
6598 || (inq_data->flags & SID_WBus16) != 0)
6599 && (cpi.hba_inquiry & PI_WIDE_16) != 0) {
6600 cts->bus_width = MSG_EXT_WDTR_BUS_16_BIT;
6601 break;
6602 }
6603 /* FALLTHROUGH to 8-bit */
6604 default: /* New bus width?? */
6605 case MSG_EXT_WDTR_BUS_8_BIT:
6606 /* All targets can do this */
6607 cts->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
6608 break;
6609 }
6610
6611 if ((cts->flags & CCB_TRANS_DISC_ENB) == 0) {
6612 /*
6613 * Can't tag queue without disconnection.
6614 */
6615 cts->flags &= ~CCB_TRANS_TAG_ENB;
6616 cts->valid |= CCB_TRANS_TQ_VALID;
6617 }
6618
6619 if ((cpi.hba_inquiry & PI_TAG_ABLE) == 0
6620 || (inq_data->flags & SID_CmdQue) == 0
6621 || (device->queue_flags & SCP_QUEUE_DQUE) != 0
6622 || (device->quirk->mintags == 0)) {
6623 /*
6624 * Can't tag on hardware that doesn't support,
6625 * doesn't have it enabled, or has broken tag support.
6626 */
6627 cts->flags &= ~CCB_TRANS_TAG_ENB;
6628 }
6629 }
6630
6631 qfrozen = FALSE;
6632 if ((cts->valid & CCB_TRANS_TQ_VALID) != 0) {
6633 int device_tagenb;
6634
6635 /*
6636 * If we are transitioning from tags to no-tags or
6637 * vice-versa, we need to carefully freeze and restart
6638 * the queue so that we don't overlap tagged and non-tagged
6639 * commands. We also temporarily stop tags if there is
6640 * a change in transfer negotiation settings to allow
6641 * "tag-less" negotiation.
6642 */
6643 if ((device->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
6644 || (device->inq_flags & SID_CmdQue) != 0)
6645 device_tagenb = TRUE;
6646 else
6647 device_tagenb = FALSE;
6648
6649 if (((cts->flags & CCB_TRANS_TAG_ENB) != 0
6650 && device_tagenb == FALSE)
6651 || ((cts->flags & CCB_TRANS_TAG_ENB) == 0
6652 && device_tagenb == TRUE)) {
6653
6654 if ((cts->flags & CCB_TRANS_TAG_ENB) != 0) {
6655 /*
6656 * Delay change to use tags until after a
6657 * few commands have gone to this device so
6658 * the controller has time to perform transfer
6659 * negotiations without tagged messages getting
6660 * in the way.
6661 */
6662 device->tag_delay_count = CAM_TAG_DELAY_COUNT;
6663 device->flags |= CAM_DEV_TAG_AFTER_COUNT;
6664 } else {
6665 xpt_freeze_devq(cts->ccb_h.path, /*count*/1);
6666 qfrozen = TRUE;
6667 device->inq_flags &= ~SID_CmdQue;
6668 xpt_dev_ccbq_resize(cts->ccb_h.path,
6669 sim->max_dev_openings);
6670 device->flags &= ~CAM_DEV_TAG_AFTER_COUNT;
6671 device->tag_delay_count = 0;
6672 }
6673 }
6674 }
6675
6676 if (async_update == FALSE) {
6677 /*
6678 * If we are currently performing tagged transactions to
6679 * this device and want to change its negotiation parameters,
6680 * go non-tagged for a bit to give the controller a chance to
6681 * negotiate unhampered by tag messages.
6682 */
6683 if ((device->inq_flags & SID_CmdQue) != 0
6684 && (cts->flags & (CCB_TRANS_SYNC_RATE_VALID|
6685 CCB_TRANS_SYNC_OFFSET_VALID|
6686 CCB_TRANS_BUS_WIDTH_VALID)) != 0)
6687 xpt_toggle_tags(cts->ccb_h.path);
6688
6689 (*(sim->sim_action))(sim, (union ccb *)cts);
6690 }
6691
6692 if (qfrozen) {
6693 struct ccb_relsim crs;
6694
6695 xpt_setup_ccb(&crs.ccb_h, cts->ccb_h.path,
6696 /*priority*/1);
6697 crs.ccb_h.func_code = XPT_REL_SIMQ;
6698 crs.release_flags = RELSIM_RELEASE_AFTER_QEMPTY;
6699 crs.openings
6700 = crs.release_timeout
6701 = crs.qfrozen_cnt
6702 = 0;
6703 xpt_action((union ccb *)&crs);
6704 }
6705 }
6706
6707
6708 #endif /* CAM_NEW_TRAN_CODE */
6709
6710 static void
6711 xpt_toggle_tags(struct cam_path *path)
6712 {
6713 struct cam_ed *dev;
6714
6715 /*
6716 * Give controllers a chance to renegotiate
6717 * before starting tag operations. We
6718 * "toggle" tagged queuing off then on
6719 * which causes the tag enable command delay
6720 * counter to come into effect.
6721 */
6722 dev = path->device;
6723 if ((dev->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
6724 || ((dev->inq_flags & SID_CmdQue) != 0
6725 && (dev->inq_flags & (SID_Sync|SID_WBus16|SID_WBus32)) != 0)) {
6726 struct ccb_trans_settings cts;
6727
6728 xpt_setup_ccb(&cts.ccb_h, path, 1);
6729 #ifdef CAM_NEW_TRAN_CODE
6730 cts.protocol = PROTO_SCSI;
6731 cts.protocol_version = PROTO_VERSION_UNSPECIFIED;
6732 cts.transport = XPORT_UNSPECIFIED;
6733 cts.transport_version = XPORT_VERSION_UNSPECIFIED;
6734 cts.proto_specific.scsi.flags = 0;
6735 cts.proto_specific.scsi.valid = CTS_SCSI_VALID_TQ;
6736 #else /* CAM_NEW_TRAN_CODE */
6737 cts.flags = 0;
6738 cts.valid = CCB_TRANS_TQ_VALID;
6739 #endif /* CAM_NEW_TRAN_CODE */
6740 xpt_set_transfer_settings(&cts, path->device,
6741 /*async_update*/TRUE);
6742 #ifdef CAM_NEW_TRAN_CODE
6743 cts.proto_specific.scsi.flags = CTS_SCSI_FLAGS_TAG_ENB;
6744 #else /* CAM_NEW_TRAN_CODE */
6745 cts.flags = CCB_TRANS_TAG_ENB;
6746 #endif /* CAM_NEW_TRAN_CODE */
6747 xpt_set_transfer_settings(&cts, path->device,
6748 /*async_update*/TRUE);
6749 }
6750 }
6751
6752 static void
6753 xpt_start_tags(struct cam_path *path)
6754 {
6755 struct ccb_relsim crs;
6756 struct cam_ed *device;
6757 struct cam_sim *sim;
6758 int newopenings;
6759
6760 device = path->device;
6761 sim = path->bus->sim;
6762 device->flags &= ~CAM_DEV_TAG_AFTER_COUNT;
6763 xpt_freeze_devq(path, /*count*/1);
6764 device->inq_flags |= SID_CmdQue;
6765 if (device->tag_saved_openings != 0)
6766 newopenings = device->tag_saved_openings;
6767 else
6768 newopenings = min(device->quirk->maxtags,
6769 sim->max_tagged_dev_openings);
6770 xpt_dev_ccbq_resize(path, newopenings);
6771 xpt_setup_ccb(&crs.ccb_h, path, /*priority*/1);
6772 crs.ccb_h.func_code = XPT_REL_SIMQ;
6773 crs.release_flags = RELSIM_RELEASE_AFTER_QEMPTY;
6774 crs.openings
6775 = crs.release_timeout
6776 = crs.qfrozen_cnt
6777 = 0;
6778 xpt_action((union ccb *)&crs);
6779 }
6780
6781 static int busses_to_config;
6782 static int busses_to_reset;
6783
6784 static int
6785 xptconfigbuscountfunc(struct cam_eb *bus, void *arg)
6786 {
6787 if (bus->path_id != CAM_XPT_PATH_ID) {
6788 struct cam_path path;
6789 struct ccb_pathinq cpi;
6790 int can_negotiate;
6791
6792 busses_to_config++;
6793 xpt_compile_path(&path, NULL, bus->path_id,
6794 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
6795 xpt_setup_ccb(&cpi.ccb_h, &path, /*priority*/1);
6796 cpi.ccb_h.func_code = XPT_PATH_INQ;
6797 xpt_action((union ccb *)&cpi);
6798 can_negotiate = cpi.hba_inquiry;
6799 can_negotiate &= (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE);
6800 if ((cpi.hba_misc & PIM_NOBUSRESET) == 0
6801 && can_negotiate)
6802 busses_to_reset++;
6803 xpt_release_path(&path);
6804 }
6805
6806 return(1);
6807 }
6808
6809 static int
6810 xptconfigfunc(struct cam_eb *bus, void *arg)
6811 {
6812 struct cam_path *path;
6813 union ccb *work_ccb;
6814
6815 if (bus->path_id != CAM_XPT_PATH_ID) {
6816 cam_status status;
6817 int can_negotiate;
6818
6819 work_ccb = xpt_alloc_ccb();
6820 if ((status = xpt_create_path(&path, xpt_periph, bus->path_id,
6821 CAM_TARGET_WILDCARD,
6822 CAM_LUN_WILDCARD)) !=CAM_REQ_CMP){
6823 printf("xptconfigfunc: xpt_create_path failed with "
6824 "status %#x for bus %d\n", status, bus->path_id);
6825 printf("xptconfigfunc: halting bus configuration\n");
6826 xpt_free_ccb(work_ccb);
6827 busses_to_config--;
6828 xpt_finishconfig(xpt_periph, NULL);
6829 return(0);
6830 }
6831 xpt_setup_ccb(&work_ccb->ccb_h, path, /*priority*/1);
6832 work_ccb->ccb_h.func_code = XPT_PATH_INQ;
6833 xpt_action(work_ccb);
6834 if (work_ccb->ccb_h.status != CAM_REQ_CMP) {
6835 printf("xptconfigfunc: CPI failed on bus %d "
6836 "with status %d\n", bus->path_id,
6837 work_ccb->ccb_h.status);
6838 xpt_finishconfig(xpt_periph, work_ccb);
6839 return(1);
6840 }
6841
6842 can_negotiate = work_ccb->cpi.hba_inquiry;
6843 can_negotiate &= (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE);
6844 if ((work_ccb->cpi.hba_misc & PIM_NOBUSRESET) == 0
6845 && (can_negotiate != 0)) {
6846 xpt_setup_ccb(&work_ccb->ccb_h, path, /*priority*/1);
6847 work_ccb->ccb_h.func_code = XPT_RESET_BUS;
6848 work_ccb->ccb_h.cbfcnp = NULL;
6849 CAM_DEBUG(path, CAM_DEBUG_SUBTRACE,
6850 ("Resetting Bus\n"));
6851 xpt_action(work_ccb);
6852 xpt_finishconfig(xpt_periph, work_ccb);
6853 } else {
6854 /* Act as though we performed a successful BUS RESET */
6855 work_ccb->ccb_h.func_code = XPT_RESET_BUS;
6856 xpt_finishconfig(xpt_periph, work_ccb);
6857 }
6858 }
6859
6860 return(1);
6861 }
6862
6863 static void
6864 xpt_config(void *arg)
6865 {
6866 /*
6867 * Now that interrupts are enabled, go find our devices
6868 */
6869
6870 #ifdef CAMDEBUG
6871 /* Setup debugging flags and path */
6872 #ifdef CAM_DEBUG_FLAGS
6873 cam_dflags = CAM_DEBUG_FLAGS;
6874 #else /* !CAM_DEBUG_FLAGS */
6875 cam_dflags = CAM_DEBUG_NONE;
6876 #endif /* CAM_DEBUG_FLAGS */
6877 #ifdef CAM_DEBUG_BUS
6878 if (cam_dflags != CAM_DEBUG_NONE) {
6879 if (xpt_create_path(&cam_dpath, xpt_periph,
6880 CAM_DEBUG_BUS, CAM_DEBUG_TARGET,
6881 CAM_DEBUG_LUN) != CAM_REQ_CMP) {
6882 printf("xpt_config: xpt_create_path() failed for debug"
6883 " target %d:%d:%d, debugging disabled\n",
6884 CAM_DEBUG_BUS, CAM_DEBUG_TARGET, CAM_DEBUG_LUN);
6885 cam_dflags = CAM_DEBUG_NONE;
6886 }
6887 } else
6888 cam_dpath = NULL;
6889 #else /* !CAM_DEBUG_BUS */
6890 cam_dpath = NULL;
6891 #endif /* CAM_DEBUG_BUS */
6892 #endif /* CAMDEBUG */
6893
6894 /*
6895 * Scan all installed busses.
6896 */
6897 xpt_for_all_busses(xptconfigbuscountfunc, NULL);
6898
6899 if (busses_to_config == 0) {
6900 /* Call manually because we don't have any busses */
6901 xpt_finishconfig(xpt_periph, NULL);
6902 } else {
6903 if (busses_to_reset > 0 && scsi_delay >= 2000) {
6904 printf("Waiting %d seconds for SCSI "
6905 "devices to settle\n", scsi_delay/1000);
6906 }
6907 xpt_for_all_busses(xptconfigfunc, NULL);
6908 }
6909 }
6910
6911 /*
6912 * If the given device only has one peripheral attached to it, and if that
6913 * peripheral is the passthrough driver, announce it. This insures that the
6914 * user sees some sort of announcement for every peripheral in their system.
6915 */
6916 static int
6917 xptpassannouncefunc(struct cam_ed *device, void *arg)
6918 {
6919 struct cam_periph *periph;
6920 int i;
6921
6922 for (periph = SLIST_FIRST(&device->periphs), i = 0; periph != NULL;
6923 periph = SLIST_NEXT(periph, periph_links), i++);
6924
6925 periph = SLIST_FIRST(&device->periphs);
6926 if ((i == 1)
6927 && (strncmp(periph->periph_name, "pass", 4) == 0))
6928 xpt_announce_periph(periph, NULL);
6929
6930 return(1);
6931 }
6932
6933 static void
6934 xpt_finishconfig(struct cam_periph *periph, union ccb *done_ccb)
6935 {
6936 struct periph_driver **p_drv;
6937 int i;
6938
6939 if (done_ccb != NULL) {
6940 CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE,
6941 ("xpt_finishconfig\n"));
6942 switch(done_ccb->ccb_h.func_code) {
6943 case XPT_RESET_BUS:
6944 if (done_ccb->ccb_h.status == CAM_REQ_CMP) {
6945 done_ccb->ccb_h.func_code = XPT_SCAN_BUS;
6946 done_ccb->ccb_h.cbfcnp = xpt_finishconfig;
6947 done_ccb->crcn.flags = 0;
6948 xpt_action(done_ccb);
6949 return;
6950 }
6951 /* FALLTHROUGH */
6952 case XPT_SCAN_BUS:
6953 default:
6954 xpt_free_path(done_ccb->ccb_h.path);
6955 busses_to_config--;
6956 break;
6957 }
6958 }
6959
6960 if (busses_to_config == 0) {
6961 /* Register all the peripheral drivers */
6962 /* XXX This will have to change when we have loadable modules */
6963 p_drv = periph_drivers;
6964 for (i = 0; p_drv[i] != NULL; i++) {
6965 (*p_drv[i]->init)();
6966 }
6967
6968 /*
6969 * Check for devices with no "standard" peripheral driver
6970 * attached. For any devices like that, announce the
6971 * passthrough driver so the user will see something.
6972 */
6973 xpt_for_all_devices(xptpassannouncefunc, NULL);
6974
6975 /* Release our hook so that the boot can continue. */
6976 config_intrhook_disestablish(xpt_config_hook);
6977 free(xpt_config_hook, M_TEMP);
6978 xpt_config_hook = NULL;
6979 }
6980 if (done_ccb != NULL)
6981 xpt_free_ccb(done_ccb);
6982 }
6983
6984 static void
6985 xptaction(struct cam_sim *sim, union ccb *work_ccb)
6986 {
6987 CAM_DEBUG(work_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("xptaction\n"));
6988
6989 switch (work_ccb->ccb_h.func_code) {
6990 /* Common cases first */
6991 case XPT_PATH_INQ: /* Path routing inquiry */
6992 {
6993 struct ccb_pathinq *cpi;
6994
6995 cpi = &work_ccb->cpi;
6996 cpi->version_num = 1; /* XXX??? */
6997 cpi->hba_inquiry = 0;
6998 cpi->target_sprt = 0;
6999 cpi->hba_misc = 0;
7000 cpi->hba_eng_cnt = 0;
7001 cpi->max_target = 0;
7002 cpi->max_lun = 0;
7003 cpi->initiator_id = 0;
7004 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
7005 strncpy(cpi->hba_vid, "", HBA_IDLEN);
7006 strncpy(cpi->dev_name, sim->sim_name, DEV_IDLEN);
7007 cpi->unit_number = sim->unit_number;
7008 cpi->bus_id = sim->bus_id;
7009 cpi->base_transfer_speed = 0;
7010 #ifdef CAM_NEW_TRAN_CODE
7011 cpi->protocol = PROTO_UNSPECIFIED;
7012 cpi->protocol_version = PROTO_VERSION_UNSPECIFIED;
7013 cpi->transport = XPORT_UNSPECIFIED;
7014 cpi->transport_version = XPORT_VERSION_UNSPECIFIED;
7015 #endif /* CAM_NEW_TRAN_CODE */
7016 cpi->ccb_h.status = CAM_REQ_CMP;
7017 xpt_done(work_ccb);
7018 break;
7019 }
7020 default:
7021 work_ccb->ccb_h.status = CAM_REQ_INVALID;
7022 xpt_done(work_ccb);
7023 break;
7024 }
7025 }
7026
7027 /*
7028 * The xpt as a "controller" has no interrupt sources, so polling
7029 * is a no-op.
7030 */
7031 static void
7032 xptpoll(struct cam_sim *sim)
7033 {
7034 }
7035
7036 static void
7037 camisr(void *V_queue)
7038 {
7039 cam_isrq_t *oqueue = V_queue;
7040 cam_isrq_t queue;
7041 int s;
7042 struct ccb_hdr *ccb_h;
7043
7044 /*
7045 * Transfer the ccb_bioq list to a temporary list so we can operate
7046 * on it without needing to lock/unlock on every loop. The concat
7047 * function with re-init the real list for us.
7048 */
7049 s = splcam();
7050 mtx_lock(&cam_bioq_lock);
7051 TAILQ_INIT(&queue);
7052 TAILQ_CONCAT(&queue, oqueue, sim_links.tqe);
7053 mtx_unlock(&cam_bioq_lock);
7054
7055 while ((ccb_h = TAILQ_FIRST(&queue)) != NULL) {
7056 int runq;
7057
7058 TAILQ_REMOVE(&queue, ccb_h, sim_links.tqe);
7059 ccb_h->pinfo.index = CAM_UNQUEUED_INDEX;
7060 splx(s);
7061
7062 CAM_DEBUG(ccb_h->path, CAM_DEBUG_TRACE,
7063 ("camisr\n"));
7064
7065 runq = FALSE;
7066
7067 if (ccb_h->flags & CAM_HIGH_POWER) {
7068 struct highpowerlist *hphead;
7069 union ccb *send_ccb;
7070
7071 hphead = &highpowerq;
7072
7073 send_ccb = (union ccb *)STAILQ_FIRST(hphead);
7074
7075 /*
7076 * Increment the count since this command is done.
7077 */
7078 num_highpower++;
7079
7080 /*
7081 * Any high powered commands queued up?
7082 */
7083 if (send_ccb != NULL) {
7084
7085 STAILQ_REMOVE_HEAD(hphead, xpt_links.stqe);
7086
7087 xpt_release_devq(send_ccb->ccb_h.path,
7088 /*count*/1, /*runqueue*/TRUE);
7089 }
7090 }
7091 if ((ccb_h->func_code & XPT_FC_USER_CCB) == 0) {
7092 struct cam_ed *dev;
7093
7094 dev = ccb_h->path->device;
7095
7096 s = splcam();
7097 cam_ccbq_ccb_done(&dev->ccbq, (union ccb *)ccb_h);
7098
7099 ccb_h->path->bus->sim->devq->send_active--;
7100 ccb_h->path->bus->sim->devq->send_openings++;
7101 splx(s);
7102
7103 if (((dev->flags & CAM_DEV_REL_ON_COMPLETE) != 0
7104 && (ccb_h->status&CAM_STATUS_MASK) != CAM_REQUEUE_REQ)
7105 || ((dev->flags & CAM_DEV_REL_ON_QUEUE_EMPTY) != 0
7106 && (dev->ccbq.dev_active == 0))) {
7107
7108 xpt_release_devq(ccb_h->path, /*count*/1,
7109 /*run_queue*/TRUE);
7110 }
7111
7112 if ((dev->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
7113 && (--dev->tag_delay_count == 0))
7114 xpt_start_tags(ccb_h->path);
7115
7116 if ((dev->ccbq.queue.entries > 0)
7117 && (dev->qfrozen_cnt == 0)
7118 && (device_is_send_queued(dev) == 0)) {
7119 runq = xpt_schedule_dev_sendq(ccb_h->path->bus,
7120 dev);
7121 }
7122 }
7123
7124 if (ccb_h->status & CAM_RELEASE_SIMQ) {
7125 xpt_release_simq(ccb_h->path->bus->sim,
7126 /*run_queue*/TRUE);
7127 ccb_h->status &= ~CAM_RELEASE_SIMQ;
7128 runq = FALSE;
7129 }
7130
7131 if ((ccb_h->flags & CAM_DEV_QFRZDIS)
7132 && (ccb_h->status & CAM_DEV_QFRZN)) {
7133 xpt_release_devq(ccb_h->path, /*count*/1,
7134 /*run_queue*/TRUE);
7135 ccb_h->status &= ~CAM_DEV_QFRZN;
7136 } else if (runq) {
7137 xpt_run_dev_sendq(ccb_h->path->bus);
7138 }
7139
7140 /* Call the peripheral driver's callback */
7141 (*ccb_h->cbfcnp)(ccb_h->path->periph, (union ccb *)ccb_h);
7142
7143 /* Raise IPL for while test */
7144 s = splcam();
7145 }
7146 splx(s);
7147 }
Cache object: e10260ee7db3ef6840591fc9b38747c9
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