2 * Implementation of the Common Access Method Transport (XPT) layer.
4 * Copyright (c) 1997, 1998, 1999 Justin T. Gibbs.
5 * Copyright (c) 1997, 1998, 1999 Kenneth D. Merry.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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.
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
29 * $FreeBSD: src/sys/cam/cam_xpt.c,v 1.80.2.18 2002/12/09 17:31:55 gibbs Exp $
30 * $DragonFly: src/sys/bus/cam/cam_xpt.c,v 1.68 2008/08/23 17:13:31 pavalos Exp $
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/types.h>
35 #include <sys/malloc.h>
36 #include <sys/kernel.h>
39 #include <sys/device.h>
40 #include <sys/fcntl.h>
42 #include <sys/devicestat.h>
43 #include <sys/interrupt.h>
45 #include <sys/taskqueue.h>
47 #include <sys/thread.h>
49 #include <sys/spinlock.h>
51 #include <sys/thread2.h>
52 #include <sys/spinlock2.h>
53 #include <sys/mplock2.h>
55 #include <machine/clock.h>
56 #include <machine/stdarg.h>
60 #include "cam_periph.h"
63 #include "cam_xpt_sim.h"
64 #include "cam_xpt_periph.h"
65 #include "cam_debug.h"
67 #include "scsi/scsi_all.h"
68 #include "scsi/scsi_message.h"
69 #include "scsi/scsi_pass.h"
70 #include <sys/kthread.h>
73 /* Datastructures internal to the xpt layer */
74 MALLOC_DEFINE(M_CAMXPT, "CAM XPT", "CAM XPT buffers");
76 /* Object for defering XPT actions to a taskqueue */
84 * Definition of an async handler callback block. These are used to add
85 * SIMs and peripherals to the async callback lists.
88 SLIST_ENTRY(async_node) links;
89 u_int32_t event_enable; /* Async Event enables */
90 void (*callback)(void *arg, u_int32_t code,
91 struct cam_path *path, void *args);
95 SLIST_HEAD(async_list, async_node);
96 SLIST_HEAD(periph_list, cam_periph);
99 * This is the maximum number of high powered commands (e.g. start unit)
100 * that can be outstanding at a particular time.
102 #ifndef CAM_MAX_HIGHPOWER
103 #define CAM_MAX_HIGHPOWER 4
107 * Structure for queueing a device in a run queue.
108 * There is one run queue for allocating new ccbs,
109 * and another for sending ccbs to the controller.
111 struct cam_ed_qinfo {
113 struct cam_ed *device;
117 * The CAM EDT (Existing Device Table) contains the device information for
118 * all devices for all busses in the system. The table contains a
119 * cam_ed structure for each device on the bus.
122 TAILQ_ENTRY(cam_ed) links;
123 struct cam_ed_qinfo alloc_ccb_entry;
124 struct cam_ed_qinfo send_ccb_entry;
125 struct cam_et *target;
129 * Queue of type drivers wanting to do
130 * work on this device.
132 struct cam_ccbq ccbq; /* Queue of pending ccbs */
133 struct async_list asyncs; /* Async callback info for this B/T/L */
134 struct periph_list periphs; /* All attached devices */
135 u_int generation; /* Generation number */
136 struct cam_periph *owner; /* Peripheral driver's ownership tag */
137 struct xpt_quirk_entry *quirk; /* Oddities about this device */
138 /* Storage for the inquiry data */
140 u_int protocol_version;
142 u_int transport_version;
143 struct scsi_inquiry_data inq_data;
144 u_int8_t inq_flags; /*
145 * Current settings for inquiry flags.
146 * This allows us to override settings
147 * like disconnection and tagged
148 * queuing for a device.
150 u_int8_t queue_flags; /* Queue flags from the control page */
151 u_int8_t serial_num_len;
152 u_int8_t *serial_num;
153 u_int32_t qfrozen_cnt;
155 #define CAM_DEV_UNCONFIGURED 0x01
156 #define CAM_DEV_REL_TIMEOUT_PENDING 0x02
157 #define CAM_DEV_REL_ON_COMPLETE 0x04
158 #define CAM_DEV_REL_ON_QUEUE_EMPTY 0x08
159 #define CAM_DEV_RESIZE_QUEUE_NEEDED 0x10
160 #define CAM_DEV_TAG_AFTER_COUNT 0x20
161 #define CAM_DEV_INQUIRY_DATA_VALID 0x40
162 #define CAM_DEV_IN_DV 0x80
163 #define CAM_DEV_DV_HIT_BOTTOM 0x100
164 u_int32_t tag_delay_count;
165 #define CAM_TAG_DELAY_COUNT 5
166 u_int32_t tag_saved_openings;
168 struct callout callout;
172 * Each target is represented by an ET (Existing Target). These
173 * entries are created when a target is successfully probed with an
174 * identify, and removed when a device fails to respond after a number
175 * of retries, or a bus rescan finds the device missing.
178 TAILQ_HEAD(, cam_ed) ed_entries;
179 TAILQ_ENTRY(cam_et) links;
181 target_id_t target_id;
184 struct timeval last_reset; /* uptime of last reset */
188 * Each bus is represented by an EB (Existing Bus). These entries
189 * are created by calls to xpt_bus_register and deleted by calls to
190 * xpt_bus_deregister.
193 TAILQ_HEAD(, cam_et) et_entries;
194 TAILQ_ENTRY(cam_eb) links;
197 struct timeval last_reset; /* uptime of last reset */
199 #define CAM_EB_RUNQ_SCHEDULED 0x01
202 int counted_to_config; /* busses_to_config */
206 struct cam_periph *periph;
208 struct cam_et *target;
209 struct cam_ed *device;
212 struct xpt_quirk_entry {
213 struct scsi_inquiry_pattern inq_pat;
215 #define CAM_QUIRK_NOLUNS 0x01
216 #define CAM_QUIRK_NOSERIAL 0x02
217 #define CAM_QUIRK_HILUNS 0x04
218 #define CAM_QUIRK_NOHILUNS 0x08
223 static int cam_srch_hi = 0;
224 TUNABLE_INT("kern.cam.cam_srch_hi", &cam_srch_hi);
225 static int sysctl_cam_search_luns(SYSCTL_HANDLER_ARGS);
226 SYSCTL_PROC(_kern_cam, OID_AUTO, cam_srch_hi, CTLTYPE_INT|CTLFLAG_RW, 0, 0,
227 sysctl_cam_search_luns, "I",
228 "allow search above LUN 7 for SCSI3 and greater devices");
230 #define CAM_SCSI2_MAXLUN 8
232 * If we're not quirked to search <= the first 8 luns
233 * and we are either quirked to search above lun 8,
234 * or we're > SCSI-2 and we've enabled hilun searching,
235 * or we're > SCSI-2 and the last lun was a success,
236 * we can look for luns above lun 8.
238 #define CAN_SRCH_HI_SPARSE(dv) \
239 (((dv->quirk->quirks & CAM_QUIRK_NOHILUNS) == 0) \
240 && ((dv->quirk->quirks & CAM_QUIRK_HILUNS) \
241 || (SID_ANSI_REV(&dv->inq_data) > SCSI_REV_2 && cam_srch_hi)))
243 #define CAN_SRCH_HI_DENSE(dv) \
244 (((dv->quirk->quirks & CAM_QUIRK_NOHILUNS) == 0) \
245 && ((dv->quirk->quirks & CAM_QUIRK_HILUNS) \
246 || (SID_ANSI_REV(&dv->inq_data) > SCSI_REV_2)))
254 u_int32_t xpt_generation;
256 /* number of high powered commands that can go through right now */
257 STAILQ_HEAD(highpowerlist, ccb_hdr) highpowerq;
260 /* queue for handling async rescan requests. */
261 TAILQ_HEAD(, ccb_hdr) ccb_scanq;
262 int ccb_scanq_running;
264 /* Registered busses */
265 TAILQ_HEAD(,cam_eb) xpt_busses;
266 u_int bus_generation;
268 struct intr_config_hook *xpt_config_hook;
270 struct lock xpt_topo_lock;
271 struct lock xpt_lock;
274 static const char quantum[] = "QUANTUM";
275 static const char sony[] = "SONY";
276 static const char west_digital[] = "WDIGTL";
277 static const char samsung[] = "SAMSUNG";
278 static const char seagate[] = "SEAGATE";
279 static const char microp[] = "MICROP";
281 static struct xpt_quirk_entry xpt_quirk_table[] =
284 /* Reports QUEUE FULL for temporary resource shortages */
285 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP39100*", "*" },
286 /*quirks*/0, /*mintags*/24, /*maxtags*/32
289 /* Reports QUEUE FULL for temporary resource shortages */
290 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP34550*", "*" },
291 /*quirks*/0, /*mintags*/24, /*maxtags*/32
294 /* Reports QUEUE FULL for temporary resource shortages */
295 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP32275*", "*" },
296 /*quirks*/0, /*mintags*/24, /*maxtags*/32
299 /* Broken tagged queuing drive */
300 { T_DIRECT, SIP_MEDIA_FIXED, microp, "4421-07*", "*" },
301 /*quirks*/0, /*mintags*/0, /*maxtags*/0
304 /* Broken tagged queuing drive */
305 { T_DIRECT, SIP_MEDIA_FIXED, "HP", "C372*", "*" },
306 /*quirks*/0, /*mintags*/0, /*maxtags*/0
309 /* Broken tagged queuing drive */
310 { T_DIRECT, SIP_MEDIA_FIXED, microp, "3391*", "x43h" },
311 /*quirks*/0, /*mintags*/0, /*maxtags*/0
315 * Unfortunately, the Quantum Atlas III has the same
316 * problem as the Atlas II drives above.
317 * Reported by: "Johan Granlund" <johan@granlund.nu>
319 * For future reference, the drive with the problem was:
320 * QUANTUM QM39100TD-SW N1B0
322 * It's possible that Quantum will fix the problem in later
323 * firmware revisions. If that happens, the quirk entry
324 * will need to be made specific to the firmware revisions
328 /* Reports QUEUE FULL for temporary resource shortages */
329 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "QM39100*", "*" },
330 /*quirks*/0, /*mintags*/24, /*maxtags*/32
334 * 18 Gig Atlas III, same problem as the 9G version.
335 * Reported by: Andre Albsmeier
336 * <andre.albsmeier@mchp.siemens.de>
338 * For future reference, the drive with the problem was:
339 * QUANTUM QM318000TD-S N491
341 /* Reports QUEUE FULL for temporary resource shortages */
342 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "QM318000*", "*" },
343 /*quirks*/0, /*mintags*/24, /*maxtags*/32
347 * Broken tagged queuing drive
348 * Reported by: Bret Ford <bford@uop.cs.uop.edu>
349 * and: Martin Renters <martin@tdc.on.ca>
351 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST410800*", "71*" },
352 /*quirks*/0, /*mintags*/0, /*maxtags*/0
355 * The Seagate Medalist Pro drives have very poor write
356 * performance with anything more than 2 tags.
358 * Reported by: Paul van der Zwan <paulz@trantor.xs4all.nl>
359 * Drive: <SEAGATE ST36530N 1444>
361 * Reported by: Jeremy Lea <reg@shale.csir.co.za>
362 * Drive: <SEAGATE ST34520W 1281>
364 * No one has actually reported that the 9G version
365 * (ST39140*) of the Medalist Pro has the same problem, but
366 * we're assuming that it does because the 4G and 6.5G
367 * versions of the drive are broken.
370 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST34520*", "*"},
371 /*quirks*/0, /*mintags*/2, /*maxtags*/2
374 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST36530*", "*"},
375 /*quirks*/0, /*mintags*/2, /*maxtags*/2
378 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST39140*", "*"},
379 /*quirks*/0, /*mintags*/2, /*maxtags*/2
383 * Slow when tagged queueing is enabled. Write performance
384 * steadily drops off with more and more concurrent
385 * transactions. Best sequential write performance with
386 * tagged queueing turned off and write caching turned on.
389 * Submitted by: Hideaki Okada <hokada@isl.melco.co.jp>
390 * Drive: DCAS-34330 w/ "S65A" firmware.
392 * The drive with the problem had the "S65A" firmware
393 * revision, and has also been reported (by Stephen J.
394 * Roznowski <sjr@home.net>) for a drive with the "S61A"
397 * Although no one has reported problems with the 2 gig
398 * version of the DCAS drive, the assumption is that it
399 * has the same problems as the 4 gig version. Therefore
400 * this quirk entries disables tagged queueing for all
403 { T_DIRECT, SIP_MEDIA_FIXED, "IBM", "DCAS*", "*" },
404 /*quirks*/0, /*mintags*/0, /*maxtags*/0
407 /* Broken tagged queuing drive */
408 { T_DIRECT, SIP_MEDIA_REMOVABLE, "iomega", "jaz*", "*" },
409 /*quirks*/0, /*mintags*/0, /*maxtags*/0
412 /* Broken tagged queuing drive */
413 { T_DIRECT, SIP_MEDIA_FIXED, "CONNER", "CFP2107*", "*" },
414 /*quirks*/0, /*mintags*/0, /*maxtags*/0
417 /* This does not support other than LUN 0 */
418 { T_DIRECT, SIP_MEDIA_FIXED, "VMware*", "*", "*" },
419 CAM_QUIRK_NOLUNS, /*mintags*/2, /*maxtags*/255
423 * Broken tagged queuing drive.
425 * NAKAJI Hiroyuki <nakaji@zeisei.dpri.kyoto-u.ac.jp>
428 { T_DIRECT, SIP_MEDIA_FIXED, samsung, "WN34324U*", "*" },
429 /*quirks*/0, /*mintags*/0, /*maxtags*/0
433 * Slow when tagged queueing is enabled. (1.5MB/sec versus
435 * Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
436 * Best performance with these drives is achieved with
437 * tagged queueing turned off, and write caching turned on.
439 { T_DIRECT, SIP_MEDIA_FIXED, west_digital, "WDE*", "*" },
440 /*quirks*/0, /*mintags*/0, /*maxtags*/0
444 * Slow when tagged queueing is enabled. (1.5MB/sec versus
446 * Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
447 * Best performance with these drives is achieved with
448 * tagged queueing turned off, and write caching turned on.
450 { T_DIRECT, SIP_MEDIA_FIXED, west_digital, "ENTERPRISE", "*" },
451 /*quirks*/0, /*mintags*/0, /*maxtags*/0
455 * Doesn't handle queue full condition correctly,
456 * so we need to limit maxtags to what the device
457 * can handle instead of determining this automatically.
459 { T_DIRECT, SIP_MEDIA_FIXED, samsung, "WN321010S*", "*" },
460 /*quirks*/0, /*mintags*/2, /*maxtags*/32
463 /* Really only one LUN */
464 { T_ENCLOSURE, SIP_MEDIA_FIXED, "SUN", "SENA", "*" },
465 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
468 /* I can't believe we need a quirk for DPT volumes. */
469 { T_ANY, SIP_MEDIA_FIXED|SIP_MEDIA_REMOVABLE, "DPT", "*", "*" },
471 /*mintags*/0, /*maxtags*/255
475 * Many Sony CDROM drives don't like multi-LUN probing.
477 { T_CDROM, SIP_MEDIA_REMOVABLE, sony, "CD-ROM CDU*", "*" },
478 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
482 * This drive doesn't like multiple LUN probing.
483 * Submitted by: Parag Patel <parag@cgt.com>
485 { T_WORM, SIP_MEDIA_REMOVABLE, sony, "CD-R CDU9*", "*" },
486 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
489 { T_WORM, SIP_MEDIA_REMOVABLE, "YAMAHA", "CDR100*", "*" },
490 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
494 * The 8200 doesn't like multi-lun probing, and probably
495 * don't like serial number requests either.
498 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "EXABYTE",
501 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
505 * Let's try the same as above, but for a drive that says
506 * it's an IPL-6860 but is actually an EXB 8200.
509 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "EXABYTE",
512 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
516 * These Hitachi drives don't like multi-lun probing.
517 * The PR submitter has a DK319H, but says that the Linux
518 * kernel has a similar work-around for the DK312 and DK314,
519 * so all DK31* drives are quirked here.
521 * Submitted by: Paul Haddad <paul@pth.com>
523 { T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "DK31*", "*" },
524 CAM_QUIRK_NOLUNS, /*mintags*/2, /*maxtags*/255
528 * The Hitachi CJ series with J8A8 firmware apparantly has
529 * problems with tagged commands.
531 * Reported by: amagai@nue.org
533 { T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "DK32CJ*", "J8A8" },
534 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
538 * These are the large storage arrays.
539 * Submitted by: William Carrel <william.carrel@infospace.com>
541 { T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "OPEN*", "*" },
542 CAM_QUIRK_HILUNS, 2, 1024
546 * This old revision of the TDC3600 is also SCSI-1, and
547 * hangs upon serial number probing.
550 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
553 CAM_QUIRK_NOSERIAL, /*mintags*/0, /*maxtags*/0
557 * Would repond to all LUNs if asked for.
560 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "CALIPER",
563 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
567 * Would repond to all LUNs if asked for.
570 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY",
573 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
576 /* Submitted by: Matthew Dodd <winter@jurai.net> */
577 { T_PROCESSOR, SIP_MEDIA_FIXED, "Cabletrn", "EA41*", "*" },
578 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
581 /* Submitted by: Matthew Dodd <winter@jurai.net> */
582 { T_PROCESSOR, SIP_MEDIA_FIXED, "CABLETRN", "EA41*", "*" },
583 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
586 /* TeraSolutions special settings for TRC-22 RAID */
587 { T_DIRECT, SIP_MEDIA_FIXED, "TERASOLU", "TRC-22", "*" },
588 /*quirks*/0, /*mintags*/55, /*maxtags*/255
591 /* Veritas Storage Appliance */
592 { T_DIRECT, SIP_MEDIA_FIXED, "VERITAS", "*", "*" },
593 CAM_QUIRK_HILUNS, /*mintags*/2, /*maxtags*/1024
597 * Would respond to all LUNs. Device type and removable
598 * flag are jumper-selectable.
600 { T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED, "MaxOptix",
603 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
606 /* EasyRAID E5A aka. areca ARC-6010 */
607 { T_DIRECT, SIP_MEDIA_FIXED, "easyRAID", "*", "*" },
608 CAM_QUIRK_NOHILUNS, /*mintags*/2, /*maxtags*/255
611 { T_ENCLOSURE, SIP_MEDIA_FIXED, "DP", "BACKPLANE", "*" },
612 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
615 /* Default tagged queuing parameters for all devices */
617 T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED,
618 /*vendor*/"*", /*product*/"*", /*revision*/"*"
620 /*quirks*/0, /*mintags*/2, /*maxtags*/255
624 static const int xpt_quirk_table_size =
625 sizeof(xpt_quirk_table) / sizeof(*xpt_quirk_table);
629 DM_RET_FLAG_MASK = 0x0f,
632 DM_RET_DESCEND = 0x20,
634 DM_RET_ACTION_MASK = 0xf0
642 } xpt_traverse_depth;
644 struct xpt_traverse_config {
645 xpt_traverse_depth depth;
650 typedef int xpt_busfunc_t (struct cam_eb *bus, void *arg);
651 typedef int xpt_targetfunc_t (struct cam_et *target, void *arg);
652 typedef int xpt_devicefunc_t (struct cam_ed *device, void *arg);
653 typedef int xpt_periphfunc_t (struct cam_periph *periph, void *arg);
654 typedef int xpt_pdrvfunc_t (struct periph_driver **pdrv, void *arg);
656 /* Transport layer configuration information */
657 static struct xpt_softc xsoftc;
659 /* Queues for our software interrupt handler */
660 typedef TAILQ_HEAD(cam_isrq, ccb_hdr) cam_isrq_t;
661 typedef TAILQ_HEAD(cam_simq, cam_sim) cam_simq_t;
662 static cam_simq_t cam_simq;
663 static struct spinlock cam_simq_spin;
665 struct cam_periph *xpt_periph;
667 static periph_init_t xpt_periph_init;
669 static periph_init_t probe_periph_init;
671 static struct periph_driver xpt_driver =
673 xpt_periph_init, "xpt",
674 TAILQ_HEAD_INITIALIZER(xpt_driver.units)
677 static struct periph_driver probe_driver =
679 probe_periph_init, "probe",
680 TAILQ_HEAD_INITIALIZER(probe_driver.units)
683 PERIPHDRIVER_DECLARE(xpt, xpt_driver);
684 PERIPHDRIVER_DECLARE(probe, probe_driver);
686 #define XPT_CDEV_MAJOR 104
688 static d_open_t xptopen;
689 static d_close_t xptclose;
690 static d_ioctl_t xptioctl;
692 static struct dev_ops xpt_ops = {
693 { "xpt", XPT_CDEV_MAJOR, 0 },
699 static void dead_sim_action(struct cam_sim *sim, union ccb *ccb);
700 static void dead_sim_poll(struct cam_sim *sim);
702 /* Dummy SIM that is used when the real one has gone. */
703 static struct cam_sim cam_dead_sim;
704 static struct lock cam_dead_lock;
706 /* Storage for debugging datastructures */
708 struct cam_path *cam_dpath;
709 u_int32_t cam_dflags;
710 u_int32_t cam_debug_delay;
713 #if defined(CAM_DEBUG_FLAGS) && !defined(CAMDEBUG)
714 #error "You must have options CAMDEBUG to use options CAM_DEBUG_FLAGS"
718 * In order to enable the CAM_DEBUG_* options, the user must have CAMDEBUG
719 * enabled. Also, the user must have either none, or all of CAM_DEBUG_BUS,
720 * CAM_DEBUG_TARGET, and CAM_DEBUG_LUN specified.
722 #if defined(CAM_DEBUG_BUS) || defined(CAM_DEBUG_TARGET) \
723 || defined(CAM_DEBUG_LUN)
725 #if !defined(CAM_DEBUG_BUS) || !defined(CAM_DEBUG_TARGET) \
726 || !defined(CAM_DEBUG_LUN)
727 #error "You must define all or none of CAM_DEBUG_BUS, CAM_DEBUG_TARGET \
729 #endif /* !CAM_DEBUG_BUS || !CAM_DEBUG_TARGET || !CAM_DEBUG_LUN */
730 #else /* !CAMDEBUG */
731 #error "You must use options CAMDEBUG if you use the CAM_DEBUG_* options"
732 #endif /* CAMDEBUG */
733 #endif /* CAM_DEBUG_BUS || CAM_DEBUG_TARGET || CAM_DEBUG_LUN */
735 /* Our boot-time initialization hook */
736 static int cam_module_event_handler(module_t, int /*modeventtype_t*/, void *);
738 static moduledata_t cam_moduledata = {
740 cam_module_event_handler,
744 static int xpt_init(void *);
746 DECLARE_MODULE(cam, cam_moduledata, SI_SUB_CONFIGURE, SI_ORDER_SECOND);
747 MODULE_VERSION(cam, 1);
750 static cam_status xpt_compile_path(struct cam_path *new_path,
751 struct cam_periph *perph,
753 target_id_t target_id,
756 static void xpt_release_path(struct cam_path *path);
758 static void xpt_async_bcast(struct async_list *async_head,
759 u_int32_t async_code,
760 struct cam_path *path,
762 static void xpt_dev_async(u_int32_t async_code,
764 struct cam_et *target,
765 struct cam_ed *device,
767 static path_id_t xptnextfreepathid(void);
768 static path_id_t xptpathid(const char *sim_name, int sim_unit, int sim_bus);
769 static union ccb *xpt_get_ccb(struct cam_ed *device);
770 static int xpt_schedule_dev(struct camq *queue, cam_pinfo *dev_pinfo,
771 u_int32_t new_priority);
772 static void xpt_run_dev_allocq(struct cam_eb *bus);
773 static void xpt_run_dev_sendq(struct cam_eb *bus);
774 static timeout_t xpt_release_devq_timeout;
775 static void xpt_release_bus(struct cam_eb *bus);
776 static void xpt_release_devq_device(struct cam_ed *dev, u_int count,
778 static struct cam_et*
779 xpt_alloc_target(struct cam_eb *bus, target_id_t target_id);
780 static void xpt_release_target(struct cam_eb *bus, struct cam_et *target);
781 static struct cam_ed*
782 xpt_alloc_device(struct cam_eb *bus, struct cam_et *target,
784 static void xpt_release_device(struct cam_eb *bus, struct cam_et *target,
785 struct cam_ed *device);
786 static u_int32_t xpt_dev_ccbq_resize(struct cam_path *path, int newopenings);
787 static struct cam_eb*
788 xpt_find_bus(path_id_t path_id);
789 static struct cam_et*
790 xpt_find_target(struct cam_eb *bus, target_id_t target_id);
791 static struct cam_ed*
792 xpt_find_device(struct cam_et *target, lun_id_t lun_id);
793 static void xpt_scan_bus(struct cam_periph *periph, union ccb *ccb);
794 static void xpt_scan_lun(struct cam_periph *periph,
795 struct cam_path *path, cam_flags flags,
797 static void xptscandone(struct cam_periph *periph, union ccb *done_ccb);
798 static xpt_busfunc_t xptconfigbuscountfunc;
799 static xpt_busfunc_t xptconfigfunc;
800 static void xpt_config(void *arg);
801 static xpt_devicefunc_t xptpassannouncefunc;
802 static void xpt_finishconfig(struct cam_periph *periph, union ccb *ccb);
803 static void xpt_uncount_bus (struct cam_eb *bus);
804 static void xptaction(struct cam_sim *sim, union ccb *work_ccb);
805 static void xptpoll(struct cam_sim *sim);
806 static inthand2_t swi_cambio;
807 static void camisr(void *);
808 static void camisr_runqueue(struct cam_sim *);
809 static dev_match_ret xptbusmatch(struct dev_match_pattern *patterns,
810 u_int num_patterns, struct cam_eb *bus);
811 static dev_match_ret xptdevicematch(struct dev_match_pattern *patterns,
813 struct cam_ed *device);
814 static dev_match_ret xptperiphmatch(struct dev_match_pattern *patterns,
816 struct cam_periph *periph);
817 static xpt_busfunc_t xptedtbusfunc;
818 static xpt_targetfunc_t xptedttargetfunc;
819 static xpt_devicefunc_t xptedtdevicefunc;
820 static xpt_periphfunc_t xptedtperiphfunc;
821 static xpt_pdrvfunc_t xptplistpdrvfunc;
822 static xpt_periphfunc_t xptplistperiphfunc;
823 static int xptedtmatch(struct ccb_dev_match *cdm);
824 static int xptperiphlistmatch(struct ccb_dev_match *cdm);
825 static int xptbustraverse(struct cam_eb *start_bus,
826 xpt_busfunc_t *tr_func, void *arg);
827 static int xpttargettraverse(struct cam_eb *bus,
828 struct cam_et *start_target,
829 xpt_targetfunc_t *tr_func, void *arg);
830 static int xptdevicetraverse(struct cam_et *target,
831 struct cam_ed *start_device,
832 xpt_devicefunc_t *tr_func, void *arg);
833 static int xptperiphtraverse(struct cam_ed *device,
834 struct cam_periph *start_periph,
835 xpt_periphfunc_t *tr_func, void *arg);
836 static int xptpdrvtraverse(struct periph_driver **start_pdrv,
837 xpt_pdrvfunc_t *tr_func, void *arg);
838 static int xptpdperiphtraverse(struct periph_driver **pdrv,
839 struct cam_periph *start_periph,
840 xpt_periphfunc_t *tr_func,
842 static xpt_busfunc_t xptdefbusfunc;
843 static xpt_targetfunc_t xptdeftargetfunc;
844 static xpt_devicefunc_t xptdefdevicefunc;
845 static xpt_periphfunc_t xptdefperiphfunc;
846 static int xpt_for_all_busses(xpt_busfunc_t *tr_func, void *arg);
847 static int xpt_for_all_devices(xpt_devicefunc_t *tr_func,
849 static xpt_devicefunc_t xptsetasyncfunc;
850 static xpt_busfunc_t xptsetasyncbusfunc;
851 static cam_status xptregister(struct cam_periph *periph,
853 static cam_status proberegister(struct cam_periph *periph,
855 static void probeschedule(struct cam_periph *probe_periph);
856 static void probestart(struct cam_periph *periph, union ccb *start_ccb);
857 static void proberequestdefaultnegotiation(struct cam_periph *periph);
858 static int proberequestbackoff(struct cam_periph *periph,
859 struct cam_ed *device);
860 static void probedone(struct cam_periph *periph, union ccb *done_ccb);
861 static void probecleanup(struct cam_periph *periph);
862 static void xpt_find_quirk(struct cam_ed *device);
863 static void xpt_devise_transport(struct cam_path *path);
864 static void xpt_set_transfer_settings(struct ccb_trans_settings *cts,
865 struct cam_ed *device,
867 static void xpt_toggle_tags(struct cam_path *path);
868 static void xpt_start_tags(struct cam_path *path);
869 static __inline int xpt_schedule_dev_allocq(struct cam_eb *bus,
871 static __inline int xpt_schedule_dev_sendq(struct cam_eb *bus,
873 static __inline int periph_is_queued(struct cam_periph *periph);
874 static __inline int device_is_alloc_queued(struct cam_ed *device);
875 static __inline int device_is_send_queued(struct cam_ed *device);
876 static __inline int dev_allocq_is_runnable(struct cam_devq *devq);
879 xpt_schedule_dev_allocq(struct cam_eb *bus, struct cam_ed *dev)
883 if (bus->sim->devq && dev->ccbq.devq_openings > 0) {
884 if ((dev->flags & CAM_DEV_RESIZE_QUEUE_NEEDED) != 0) {
885 cam_ccbq_resize(&dev->ccbq,
886 dev->ccbq.dev_openings
887 + dev->ccbq.dev_active);
888 dev->flags &= ~CAM_DEV_RESIZE_QUEUE_NEEDED;
891 * The priority of a device waiting for CCB resources
892 * is that of the the highest priority peripheral driver
895 retval = xpt_schedule_dev(&bus->sim->devq->alloc_queue,
896 &dev->alloc_ccb_entry.pinfo,
897 CAMQ_GET_HEAD(&dev->drvq)->priority);
906 xpt_schedule_dev_sendq(struct cam_eb *bus, struct cam_ed *dev)
910 if (bus->sim->devq && dev->ccbq.dev_openings > 0) {
912 * The priority of a device waiting for controller
913 * resources is that of the the highest priority CCB
917 xpt_schedule_dev(&bus->sim->devq->send_queue,
918 &dev->send_ccb_entry.pinfo,
919 CAMQ_GET_HEAD(&dev->ccbq.queue)->priority);
927 periph_is_queued(struct cam_periph *periph)
929 return (periph->pinfo.index != CAM_UNQUEUED_INDEX);
933 device_is_alloc_queued(struct cam_ed *device)
935 return (device->alloc_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX);
939 device_is_send_queued(struct cam_ed *device)
941 return (device->send_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX);
945 dev_allocq_is_runnable(struct cam_devq *devq)
949 * Have space to do more work.
950 * Allowed to do work.
952 return ((devq->alloc_queue.qfrozen_cnt == 0)
953 && (devq->alloc_queue.entries > 0)
954 && (devq->alloc_openings > 0));
958 xpt_periph_init(void)
960 make_dev(&xpt_ops, 0, UID_ROOT, GID_OPERATOR, 0600, "xpt0");
964 probe_periph_init(void)
970 xptdone(struct cam_periph *periph, union ccb *done_ccb)
972 /* Caller will release the CCB */
973 wakeup(&done_ccb->ccb_h.cbfcnp);
977 xptopen(struct dev_open_args *ap)
979 cdev_t dev = ap->a_head.a_dev;
982 * Only allow read-write access.
984 if (((ap->a_oflags & FWRITE) == 0) || ((ap->a_oflags & FREAD) == 0))
988 * We don't allow nonblocking access.
990 if ((ap->a_oflags & O_NONBLOCK) != 0) {
991 kprintf("%s: can't' do nonblocking access\n", devtoname(dev));
995 /* Mark ourselves open */
996 lockmgr(&xsoftc.xpt_lock, LK_EXCLUSIVE);
997 xsoftc.flags |= XPT_FLAG_OPEN;
998 lockmgr(&xsoftc.xpt_lock, LK_RELEASE);
1004 xptclose(struct dev_close_args *ap)
1007 /* Mark ourselves closed */
1008 lockmgr(&xsoftc.xpt_lock, LK_EXCLUSIVE);
1009 xsoftc.flags &= ~XPT_FLAG_OPEN;
1010 lockmgr(&xsoftc.xpt_lock, LK_RELEASE);
1016 * Don't automatically grab the xpt softc lock here even though this is going
1017 * through the xpt device. The xpt device is really just a back door for
1018 * accessing other devices and SIMs, so the right thing to do is to grab
1019 * the appropriate SIM lock once the bus/SIM is located.
1022 xptioctl(struct dev_ioctl_args *ap)
1030 * For the transport layer CAMIOCOMMAND ioctl, we really only want
1031 * to accept CCB types that don't quite make sense to send through a
1032 * passthrough driver.
1034 case CAMIOCOMMAND: {
1039 inccb = (union ccb *)ap->a_data;
1041 bus = xpt_find_bus(inccb->ccb_h.path_id);
1047 switch(inccb->ccb_h.func_code) {
1050 if ((inccb->ccb_h.target_id != CAM_TARGET_WILDCARD)
1051 || (inccb->ccb_h.target_lun != CAM_LUN_WILDCARD)) {
1060 ccb = xpt_alloc_ccb();
1062 CAM_SIM_LOCK(bus->sim);
1065 * Create a path using the bus, target, and lun the
1068 if (xpt_create_path(&ccb->ccb_h.path, xpt_periph,
1069 inccb->ccb_h.path_id,
1070 inccb->ccb_h.target_id,
1071 inccb->ccb_h.target_lun) !=
1074 CAM_SIM_UNLOCK(bus->sim);
1078 /* Ensure all of our fields are correct */
1079 xpt_setup_ccb(&ccb->ccb_h, ccb->ccb_h.path,
1080 inccb->ccb_h.pinfo.priority);
1081 xpt_merge_ccb(ccb, inccb);
1082 ccb->ccb_h.cbfcnp = xptdone;
1083 cam_periph_runccb(ccb, NULL, 0, 0, NULL);
1084 bcopy(ccb, inccb, sizeof(union ccb));
1085 xpt_free_path(ccb->ccb_h.path);
1087 CAM_SIM_UNLOCK(bus->sim);
1094 * This is an immediate CCB, so it's okay to
1095 * allocate it on the stack.
1098 CAM_SIM_LOCK(bus->sim);
1101 * Create a path using the bus, target, and lun the
1104 if (xpt_create_path(&ccb.ccb_h.path, xpt_periph,
1105 inccb->ccb_h.path_id,
1106 inccb->ccb_h.target_id,
1107 inccb->ccb_h.target_lun) !=
1110 CAM_SIM_UNLOCK(bus->sim);
1113 /* Ensure all of our fields are correct */
1114 xpt_setup_ccb(&ccb.ccb_h, ccb.ccb_h.path,
1115 inccb->ccb_h.pinfo.priority);
1116 xpt_merge_ccb(&ccb, inccb);
1117 ccb.ccb_h.cbfcnp = xptdone;
1119 CAM_SIM_UNLOCK(bus->sim);
1120 bcopy(&ccb, inccb, sizeof(union ccb));
1121 xpt_free_path(ccb.ccb_h.path);
1125 case XPT_DEV_MATCH: {
1126 struct cam_periph_map_info mapinfo;
1127 struct cam_path *old_path;
1130 * We can't deal with physical addresses for this
1131 * type of transaction.
1133 if (inccb->ccb_h.flags & CAM_DATA_PHYS) {
1139 * Save this in case the caller had it set to
1140 * something in particular.
1142 old_path = inccb->ccb_h.path;
1145 * We really don't need a path for the matching
1146 * code. The path is needed because of the
1147 * debugging statements in xpt_action(). They
1148 * assume that the CCB has a valid path.
1150 inccb->ccb_h.path = xpt_periph->path;
1152 bzero(&mapinfo, sizeof(mapinfo));
1155 * Map the pattern and match buffers into kernel
1156 * virtual address space.
1158 error = cam_periph_mapmem(inccb, &mapinfo);
1161 inccb->ccb_h.path = old_path;
1166 * This is an immediate CCB, we can send it on directly.
1171 * Map the buffers back into user space.
1173 cam_periph_unmapmem(inccb, &mapinfo);
1175 inccb->ccb_h.path = old_path;
1184 xpt_release_bus(bus);
1188 * This is the getpassthru ioctl. It takes a XPT_GDEVLIST ccb as input,
1189 * with the periphal driver name and unit name filled in. The other
1190 * fields don't really matter as input. The passthrough driver name
1191 * ("pass"), and unit number are passed back in the ccb. The current
1192 * device generation number, and the index into the device peripheral
1193 * driver list, and the status are also passed back. Note that
1194 * since we do everything in one pass, unlike the XPT_GDEVLIST ccb,
1195 * we never return a status of CAM_GDEVLIST_LIST_CHANGED. It is
1196 * (or rather should be) impossible for the device peripheral driver
1197 * list to change since we look at the whole thing in one pass, and
1198 * we do it with lock protection.
1201 case CAMGETPASSTHRU: {
1203 struct cam_periph *periph;
1204 struct periph_driver **p_drv;
1207 u_int cur_generation;
1208 int base_periph_found;
1211 ccb = (union ccb *)ap->a_data;
1212 unit = ccb->cgdl.unit_number;
1213 name = ccb->cgdl.periph_name;
1215 * Every 100 devices, we want to drop our lock protection to
1216 * give the software interrupt handler a chance to run.
1217 * Most systems won't run into this check, but this should
1218 * avoid starvation in the software interrupt handler in
1223 ccb = (union ccb *)ap->a_data;
1225 base_periph_found = 0;
1228 * Sanity check -- make sure we don't get a null peripheral
1231 if (*ccb->cgdl.periph_name == '\0') {
1236 /* Keep the list from changing while we traverse it */
1237 lockmgr(&xsoftc.xpt_topo_lock, LK_EXCLUSIVE);
1239 cur_generation = xsoftc.xpt_generation;
1241 /* first find our driver in the list of drivers */
1242 for (p_drv = periph_drivers; *p_drv != NULL; p_drv++) {
1243 if (strcmp((*p_drv)->driver_name, name) == 0)
1247 if (*p_drv == NULL) {
1248 lockmgr(&xsoftc.xpt_topo_lock, LK_RELEASE);
1249 ccb->ccb_h.status = CAM_REQ_CMP_ERR;
1250 ccb->cgdl.status = CAM_GDEVLIST_ERROR;
1251 *ccb->cgdl.periph_name = '\0';
1252 ccb->cgdl.unit_number = 0;
1258 * Run through every peripheral instance of this driver
1259 * and check to see whether it matches the unit passed
1260 * in by the user. If it does, get out of the loops and
1261 * find the passthrough driver associated with that
1262 * peripheral driver.
1264 TAILQ_FOREACH(periph, &(*p_drv)->units, unit_links) {
1266 if (periph->unit_number == unit) {
1268 } else if (--splbreaknum == 0) {
1269 lockmgr(&xsoftc.xpt_topo_lock, LK_RELEASE);
1270 lockmgr(&xsoftc.xpt_topo_lock, LK_EXCLUSIVE);
1272 if (cur_generation != xsoftc.xpt_generation)
1277 * If we found the peripheral driver that the user passed
1278 * in, go through all of the peripheral drivers for that
1279 * particular device and look for a passthrough driver.
1281 if (periph != NULL) {
1282 struct cam_ed *device;
1285 base_periph_found = 1;
1286 device = periph->path->device;
1287 for (i = 0, periph = SLIST_FIRST(&device->periphs);
1289 periph = SLIST_NEXT(periph, periph_links), i++) {
1291 * Check to see whether we have a
1292 * passthrough device or not.
1294 if (strcmp(periph->periph_name, "pass") == 0) {
1296 * Fill in the getdevlist fields.
1298 strcpy(ccb->cgdl.periph_name,
1299 periph->periph_name);
1300 ccb->cgdl.unit_number =
1301 periph->unit_number;
1302 if (SLIST_NEXT(periph, periph_links))
1304 CAM_GDEVLIST_MORE_DEVS;
1307 CAM_GDEVLIST_LAST_DEVICE;
1308 ccb->cgdl.generation =
1310 ccb->cgdl.index = i;
1312 * Fill in some CCB header fields
1313 * that the user may want.
1315 ccb->ccb_h.path_id =
1316 periph->path->bus->path_id;
1317 ccb->ccb_h.target_id =
1318 periph->path->target->target_id;
1319 ccb->ccb_h.target_lun =
1320 periph->path->device->lun_id;
1321 ccb->ccb_h.status = CAM_REQ_CMP;
1328 * If the periph is null here, one of two things has
1329 * happened. The first possibility is that we couldn't
1330 * find the unit number of the particular peripheral driver
1331 * that the user is asking about. e.g. the user asks for
1332 * the passthrough driver for "da11". We find the list of
1333 * "da" peripherals all right, but there is no unit 11.
1334 * The other possibility is that we went through the list
1335 * of peripheral drivers attached to the device structure,
1336 * but didn't find one with the name "pass". Either way,
1337 * we return ENOENT, since we couldn't find something.
1339 if (periph == NULL) {
1340 ccb->ccb_h.status = CAM_REQ_CMP_ERR;
1341 ccb->cgdl.status = CAM_GDEVLIST_ERROR;
1342 *ccb->cgdl.periph_name = '\0';
1343 ccb->cgdl.unit_number = 0;
1346 * It is unfortunate that this is even necessary,
1347 * but there are many, many clueless users out there.
1348 * If this is true, the user is looking for the
1349 * passthrough driver, but doesn't have one in his
1352 if (base_periph_found == 1) {
1353 kprintf("xptioctl: pass driver is not in the "
1355 kprintf("xptioctl: put \"device pass\" in "
1356 "your kernel config file\n");
1359 lockmgr(&xsoftc.xpt_topo_lock, LK_RELEASE);
1371 cam_module_event_handler(module_t mod, int what, void *arg)
1377 if ((error = xpt_init(NULL)) != 0)
1390 * Thread to handle asynchronous main-context requests.
1392 * This function is typically used by drivers to perform complex actions
1393 * such as bus scans and engineering requests in a main context instead
1394 * of an interrupt context.
1397 xpt_scanner_thread(void *dummy)
1400 struct cam_sim *sim;
1406 xsoftc.ccb_scanq_running = 1;
1407 while ((ccb = (void *)TAILQ_FIRST(&xsoftc.ccb_scanq)) != NULL) {
1408 TAILQ_REMOVE(&xsoftc.ccb_scanq, &ccb->ccb_h,
1412 sim = ccb->ccb_h.path->bus->sim;
1415 CAM_SIM_UNLOCK(sim);
1419 xsoftc.ccb_scanq_running = 0;
1420 tsleep_interlock(&xsoftc.ccb_scanq, 0);
1422 tsleep(&xsoftc.ccb_scanq, PINTERLOCKED, "ccb_scanq", 0);
1425 rel_mplock(); /* not reached */
1429 * Issue an asynchronous asction
1432 xpt_action_async(union ccb *ccb)
1435 TAILQ_INSERT_TAIL(&xsoftc.ccb_scanq, &ccb->ccb_h, sim_links.tqe);
1436 if (xsoftc.ccb_scanq_running == 0) {
1437 xsoftc.ccb_scanq_running = 1;
1438 wakeup(&xsoftc.ccb_scanq);
1444 /* Functions accessed by the peripheral drivers */
1446 xpt_init(void *dummy)
1448 struct cam_sim *xpt_sim;
1449 struct cam_path *path;
1450 struct cam_devq *devq;
1453 TAILQ_INIT(&xsoftc.xpt_busses);
1454 TAILQ_INIT(&cam_simq);
1455 TAILQ_INIT(&xsoftc.ccb_scanq);
1456 STAILQ_INIT(&xsoftc.highpowerq);
1457 xsoftc.num_highpower = CAM_MAX_HIGHPOWER;
1459 spin_init(&cam_simq_spin);
1460 lockinit(&xsoftc.xpt_lock, "XPT lock", 0, LK_CANRECURSE);
1461 lockinit(&xsoftc.xpt_topo_lock, "XPT topology lock", 0, LK_CANRECURSE);
1463 SLIST_INIT(&cam_dead_sim.ccb_freeq);
1464 TAILQ_INIT(&cam_dead_sim.sim_doneq);
1465 spin_init(&cam_dead_sim.sim_spin);
1466 cam_dead_sim.sim_action = dead_sim_action;
1467 cam_dead_sim.sim_poll = dead_sim_poll;
1468 cam_dead_sim.sim_name = "dead_sim";
1469 cam_dead_sim.lock = &cam_dead_lock;
1470 lockinit(&cam_dead_lock, "XPT dead_sim lock", 0, LK_CANRECURSE);
1471 cam_dead_sim.flags |= CAM_SIM_DEREGISTERED;
1474 * The xpt layer is, itself, the equivelent of a SIM.
1475 * Allow 16 ccbs in the ccb pool for it. This should
1476 * give decent parallelism when we probe busses and
1477 * perform other XPT functions.
1479 devq = cam_simq_alloc(16);
1480 xpt_sim = cam_sim_alloc(xptaction,
1485 /*lock*/&xsoftc.xpt_lock,
1486 /*max_dev_transactions*/0,
1487 /*max_tagged_dev_transactions*/0,
1489 cam_simq_release(devq);
1490 if (xpt_sim == NULL)
1493 xpt_sim->max_ccbs = 16;
1495 lockmgr(&xsoftc.xpt_lock, LK_EXCLUSIVE);
1496 if ((status = xpt_bus_register(xpt_sim, /*bus #*/0)) != CAM_SUCCESS) {
1497 kprintf("xpt_init: xpt_bus_register failed with status %#x,"
1498 " failing attach\n", status);
1503 * Looking at the XPT from the SIM layer, the XPT is
1504 * the equivelent of a peripheral driver. Allocate
1505 * a peripheral driver entry for us.
1507 if ((status = xpt_create_path(&path, NULL, CAM_XPT_PATH_ID,
1508 CAM_TARGET_WILDCARD,
1509 CAM_LUN_WILDCARD)) != CAM_REQ_CMP) {
1510 kprintf("xpt_init: xpt_create_path failed with status %#x,"
1511 " failing attach\n", status);
1515 cam_periph_alloc(xptregister, NULL, NULL, NULL, "xpt", CAM_PERIPH_BIO,
1516 path, NULL, 0, xpt_sim);
1517 xpt_free_path(path);
1519 lockmgr(&xsoftc.xpt_lock, LK_RELEASE);
1522 * Register a callback for when interrupts are enabled.
1524 xsoftc.xpt_config_hook = kmalloc(sizeof(struct intr_config_hook),
1525 M_CAMXPT, M_INTWAIT | M_ZERO);
1526 xsoftc.xpt_config_hook->ich_func = xpt_config;
1527 xsoftc.xpt_config_hook->ich_desc = "xpt";
1528 xsoftc.xpt_config_hook->ich_order = 1000;
1529 if (config_intrhook_establish(xsoftc.xpt_config_hook) != 0) {
1530 kfree (xsoftc.xpt_config_hook, M_CAMXPT);
1531 kprintf("xpt_init: config_intrhook_establish failed "
1532 "- failing attach\n");
1535 /* fire up rescan thread */
1536 if (kthread_create(xpt_scanner_thread, NULL, NULL, "xpt_thrd")) {
1537 kprintf("xpt_init: failed to create rescan thread\n");
1539 /* Install our software interrupt handlers */
1540 register_swi(SWI_CAMBIO, swi_cambio, NULL, "swi_cambio", NULL);
1546 xptregister(struct cam_periph *periph, void *arg)
1548 struct cam_sim *xpt_sim;
1550 if (periph == NULL) {
1551 kprintf("xptregister: periph was NULL!!\n");
1552 return(CAM_REQ_CMP_ERR);
1555 xpt_sim = (struct cam_sim *)arg;
1556 xpt_sim->softc = periph;
1557 xpt_periph = periph;
1558 periph->softc = NULL;
1560 return(CAM_REQ_CMP);
1564 xpt_add_periph(struct cam_periph *periph)
1566 struct cam_ed *device;
1568 struct periph_list *periph_head;
1570 sim_lock_assert_owned(periph->sim->lock);
1572 device = periph->path->device;
1574 periph_head = &device->periphs;
1576 status = CAM_REQ_CMP;
1578 if (device != NULL) {
1580 * Make room for this peripheral
1581 * so it will fit in the queue
1582 * when it's scheduled to run
1584 status = camq_resize(&device->drvq,
1585 device->drvq.array_size + 1);
1587 device->generation++;
1589 SLIST_INSERT_HEAD(periph_head, periph, periph_links);
1592 lockmgr(&xsoftc.xpt_topo_lock, LK_EXCLUSIVE);
1593 xsoftc.xpt_generation++;
1594 lockmgr(&xsoftc.xpt_topo_lock, LK_RELEASE);
1600 xpt_remove_periph(struct cam_periph *periph)
1602 struct cam_ed *device;
1604 sim_lock_assert_owned(periph->sim->lock);
1606 device = periph->path->device;
1608 if (device != NULL) {
1609 struct periph_list *periph_head;
1611 periph_head = &device->periphs;
1613 /* Release the slot for this peripheral */
1614 camq_resize(&device->drvq, device->drvq.array_size - 1);
1616 device->generation++;
1618 SLIST_REMOVE(periph_head, periph, cam_periph, periph_links);
1621 lockmgr(&xsoftc.xpt_topo_lock, LK_EXCLUSIVE);
1622 xsoftc.xpt_generation++;
1623 lockmgr(&xsoftc.xpt_topo_lock, LK_RELEASE);
1627 xpt_announce_periph(struct cam_periph *periph, char *announce_string)
1629 struct ccb_pathinq cpi;
1630 struct ccb_trans_settings cts;
1631 struct cam_path *path;
1636 sim_lock_assert_owned(periph->sim->lock);
1638 path = periph->path;
1640 /* Report basic attachment and inquiry data */
1641 kprintf("%s%d at %s%d bus %d target %d lun %d\n",
1642 periph->periph_name, periph->unit_number,
1643 path->bus->sim->sim_name,
1644 path->bus->sim->unit_number,
1645 path->bus->sim->bus_id,
1646 path->target->target_id,
1647 path->device->lun_id);
1648 kprintf("%s%d: ", periph->periph_name, periph->unit_number);
1649 scsi_print_inquiry(&path->device->inq_data);
1651 /* Report serial number */
1652 if (path->device->serial_num_len > 0) {
1653 /* Don't wrap the screen - print only the first 60 chars */
1654 kprintf("%s%d: Serial Number %.60s\n", periph->periph_name,
1655 periph->unit_number, path->device->serial_num);
1658 /* Acquire and report transfer speed */
1659 xpt_setup_ccb(&cts.ccb_h, path, /*priority*/1);
1660 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
1661 cts.type = CTS_TYPE_CURRENT_SETTINGS;
1662 xpt_action((union ccb*)&cts);
1663 if ((cts.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1667 /* Ask the SIM for its base transfer speed */
1668 xpt_setup_ccb(&cpi.ccb_h, path, /*priority*/1);
1669 cpi.ccb_h.func_code = XPT_PATH_INQ;
1670 xpt_action((union ccb *)&cpi);
1672 speed = cpi.base_transfer_speed;
1674 if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_SPI) {
1675 struct ccb_trans_settings_spi *spi;
1677 spi = &cts.xport_specific.spi;
1678 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) != 0
1679 && spi->sync_offset != 0) {
1680 freq = scsi_calc_syncsrate(spi->sync_period);
1684 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0)
1685 speed *= (0x01 << spi->bus_width);
1687 if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_FC) {
1688 struct ccb_trans_settings_fc *fc = &cts.xport_specific.fc;
1689 if (fc->valid & CTS_FC_VALID_SPEED) {
1690 speed = fc->bitrate;
1694 if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_SAS) {
1695 struct ccb_trans_settings_sas *sas = &cts.xport_specific.sas;
1696 if (sas->valid & CTS_SAS_VALID_SPEED) {
1697 speed = sas->bitrate;
1703 kprintf("%s%d: %d.%03dMB/s transfers",
1704 periph->periph_name, periph->unit_number,
1707 kprintf("%s%d: %dKB/s transfers", periph->periph_name,
1708 periph->unit_number, speed);
1710 /* Report additional information about SPI connections */
1711 if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_SPI) {
1712 struct ccb_trans_settings_spi *spi;
1714 spi = &cts.xport_specific.spi;
1716 kprintf(" (%d.%03dMHz%s, offset %d", freq / 1000,
1718 (spi->ppr_options & MSG_EXT_PPR_DT_REQ) != 0
1722 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0
1723 && spi->bus_width > 0) {
1729 kprintf("%dbit)", 8 * (0x01 << spi->bus_width));
1730 } else if (freq != 0) {
1734 if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_FC) {
1735 struct ccb_trans_settings_fc *fc;
1737 fc = &cts.xport_specific.fc;
1738 if (fc->valid & CTS_FC_VALID_WWNN)
1739 kprintf(" WWNN 0x%llx", (long long) fc->wwnn);
1740 if (fc->valid & CTS_FC_VALID_WWPN)
1741 kprintf(" WWPN 0x%llx", (long long) fc->wwpn);
1742 if (fc->valid & CTS_FC_VALID_PORT)
1743 kprintf(" PortID 0x%x", fc->port);
1746 if (path->device->inq_flags & SID_CmdQue
1747 || path->device->flags & CAM_DEV_TAG_AFTER_COUNT) {
1748 kprintf("\n%s%d: Command Queueing Enabled",
1749 periph->periph_name, periph->unit_number);
1754 * We only want to print the caller's announce string if they've
1757 if (announce_string != NULL)
1758 kprintf("%s%d: %s\n", periph->periph_name,
1759 periph->unit_number, announce_string);
1762 static dev_match_ret
1763 xptbusmatch(struct dev_match_pattern *patterns, u_int num_patterns,
1766 dev_match_ret retval;
1769 retval = DM_RET_NONE;
1772 * If we aren't given something to match against, that's an error.
1775 return(DM_RET_ERROR);
1778 * If there are no match entries, then this bus matches no
1781 if ((patterns == NULL) || (num_patterns == 0))
1782 return(DM_RET_DESCEND | DM_RET_COPY);
1784 for (i = 0; i < num_patterns; i++) {
1785 struct bus_match_pattern *cur_pattern;
1788 * If the pattern in question isn't for a bus node, we
1789 * aren't interested. However, we do indicate to the
1790 * calling routine that we should continue descending the
1791 * tree, since the user wants to match against lower-level
1794 if (patterns[i].type != DEV_MATCH_BUS) {
1795 if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)
1796 retval |= DM_RET_DESCEND;
1800 cur_pattern = &patterns[i].pattern.bus_pattern;
1803 * If they want to match any bus node, we give them any
1806 if (cur_pattern->flags == BUS_MATCH_ANY) {
1807 /* set the copy flag */
1808 retval |= DM_RET_COPY;
1811 * If we've already decided on an action, go ahead
1814 if ((retval & DM_RET_ACTION_MASK) != DM_RET_NONE)
1819 * Not sure why someone would do this...
1821 if (cur_pattern->flags == BUS_MATCH_NONE)
1824 if (((cur_pattern->flags & BUS_MATCH_PATH) != 0)
1825 && (cur_pattern->path_id != bus->path_id))
1828 if (((cur_pattern->flags & BUS_MATCH_BUS_ID) != 0)
1829 && (cur_pattern->bus_id != bus->sim->bus_id))
1832 if (((cur_pattern->flags & BUS_MATCH_UNIT) != 0)
1833 && (cur_pattern->unit_number != bus->sim->unit_number))
1836 if (((cur_pattern->flags & BUS_MATCH_NAME) != 0)
1837 && (strncmp(cur_pattern->dev_name, bus->sim->sim_name,
1842 * If we get to this point, the user definitely wants
1843 * information on this bus. So tell the caller to copy the
1846 retval |= DM_RET_COPY;
1849 * If the return action has been set to descend, then we
1850 * know that we've already seen a non-bus matching
1851 * expression, therefore we need to further descend the tree.
1852 * This won't change by continuing around the loop, so we
1853 * go ahead and return. If we haven't seen a non-bus
1854 * matching expression, we keep going around the loop until
1855 * we exhaust the matching expressions. We'll set the stop
1856 * flag once we fall out of the loop.
1858 if ((retval & DM_RET_ACTION_MASK) == DM_RET_DESCEND)
1863 * If the return action hasn't been set to descend yet, that means
1864 * we haven't seen anything other than bus matching patterns. So
1865 * tell the caller to stop descending the tree -- the user doesn't
1866 * want to match against lower level tree elements.
1868 if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)
1869 retval |= DM_RET_STOP;
1874 static dev_match_ret
1875 xptdevicematch(struct dev_match_pattern *patterns, u_int num_patterns,
1876 struct cam_ed *device)
1878 dev_match_ret retval;
1881 retval = DM_RET_NONE;
1884 * If we aren't given something to match against, that's an error.
1887 return(DM_RET_ERROR);
1890 * If there are no match entries, then this device matches no
1893 if ((patterns == NULL) || (num_patterns == 0))
1894 return(DM_RET_DESCEND | DM_RET_COPY);
1896 for (i = 0; i < num_patterns; i++) {
1897 struct device_match_pattern *cur_pattern;
1900 * If the pattern in question isn't for a device node, we
1901 * aren't interested.
1903 if (patterns[i].type != DEV_MATCH_DEVICE) {
1904 if ((patterns[i].type == DEV_MATCH_PERIPH)
1905 && ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE))
1906 retval |= DM_RET_DESCEND;
1910 cur_pattern = &patterns[i].pattern.device_pattern;
1913 * If they want to match any device node, we give them any
1916 if (cur_pattern->flags == DEV_MATCH_ANY) {
1917 /* set the copy flag */
1918 retval |= DM_RET_COPY;
1922 * If we've already decided on an action, go ahead
1925 if ((retval & DM_RET_ACTION_MASK) != DM_RET_NONE)
1930 * Not sure why someone would do this...
1932 if (cur_pattern->flags == DEV_MATCH_NONE)
1935 if (((cur_pattern->flags & DEV_MATCH_PATH) != 0)
1936 && (cur_pattern->path_id != device->target->bus->path_id))
1939 if (((cur_pattern->flags & DEV_MATCH_TARGET) != 0)
1940 && (cur_pattern->target_id != device->target->target_id))
1943 if (((cur_pattern->flags & DEV_MATCH_LUN) != 0)
1944 && (cur_pattern->target_lun != device->lun_id))
1947 if (((cur_pattern->flags & DEV_MATCH_INQUIRY) != 0)
1948 && (cam_quirkmatch((caddr_t)&device->inq_data,
1949 (caddr_t)&cur_pattern->inq_pat,
1950 1, sizeof(cur_pattern->inq_pat),
1951 scsi_static_inquiry_match) == NULL))
1955 * If we get to this point, the user definitely wants
1956 * information on this device. So tell the caller to copy
1959 retval |= DM_RET_COPY;
1962 * If the return action has been set to descend, then we
1963 * know that we've already seen a peripheral matching
1964 * expression, therefore we need to further descend the tree.
1965 * This won't change by continuing around the loop, so we
1966 * go ahead and return. If we haven't seen a peripheral
1967 * matching expression, we keep going around the loop until
1968 * we exhaust the matching expressions. We'll set the stop
1969 * flag once we fall out of the loop.
1971 if ((retval & DM_RET_ACTION_MASK) == DM_RET_DESCEND)
1976 * If the return action hasn't been set to descend yet, that means
1977 * we haven't seen any peripheral matching patterns. So tell the
1978 * caller to stop descending the tree -- the user doesn't want to
1979 * match against lower level tree elements.
1981 if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)
1982 retval |= DM_RET_STOP;
1988 * Match a single peripheral against any number of match patterns.
1990 static dev_match_ret
1991 xptperiphmatch(struct dev_match_pattern *patterns, u_int num_patterns,
1992 struct cam_periph *periph)
1994 dev_match_ret retval;
1998 * If we aren't given something to match against, that's an error.
2001 return(DM_RET_ERROR);
2004 * If there are no match entries, then this peripheral matches no
2007 if ((patterns == NULL) || (num_patterns == 0))
2008 return(DM_RET_STOP | DM_RET_COPY);
2011 * There aren't any nodes below a peripheral node, so there's no
2012 * reason to descend the tree any further.
2014 retval = DM_RET_STOP;
2016 for (i = 0; i < num_patterns; i++) {
2017 struct periph_match_pattern *cur_pattern;
2020 * If the pattern in question isn't for a peripheral, we
2021 * aren't interested.
2023 if (patterns[i].type != DEV_MATCH_PERIPH)
2026 cur_pattern = &patterns[i].pattern.periph_pattern;
2029 * If they want to match on anything, then we will do so.
2031 if (cur_pattern->flags == PERIPH_MATCH_ANY) {
2032 /* set the copy flag */
2033 retval |= DM_RET_COPY;
2036 * We've already set the return action to stop,
2037 * since there are no nodes below peripherals in
2044 * Not sure why someone would do this...
2046 if (cur_pattern->flags == PERIPH_MATCH_NONE)
2049 if (((cur_pattern->flags & PERIPH_MATCH_PATH) != 0)
2050 && (cur_pattern->path_id != periph->path->bus->path_id))
2054 * For the target and lun id's, we have to make sure the
2055 * target and lun pointers aren't NULL. The xpt peripheral
2056 * has a wildcard target and device.
2058 if (((cur_pattern->flags & PERIPH_MATCH_TARGET) != 0)
2059 && ((periph->path->target == NULL)
2060 ||(cur_pattern->target_id != periph->path->target->target_id)))
2063 if (((cur_pattern->flags & PERIPH_MATCH_LUN) != 0)
2064 && ((periph->path->device == NULL)
2065 || (cur_pattern->target_lun != periph->path->device->lun_id)))
2068 if (((cur_pattern->flags & PERIPH_MATCH_UNIT) != 0)
2069 && (cur_pattern->unit_number != periph->unit_number))
2072 if (((cur_pattern->flags & PERIPH_MATCH_NAME) != 0)
2073 && (strncmp(cur_pattern->periph_name, periph->periph_name,
2078 * If we get to this point, the user definitely wants
2079 * information on this peripheral. So tell the caller to
2080 * copy the data out.
2082 retval |= DM_RET_COPY;
2085 * The return action has already been set to stop, since
2086 * peripherals don't have any nodes below them in the EDT.
2092 * If we get to this point, the peripheral that was passed in
2093 * doesn't match any of the patterns.
2099 xptedtbusfunc(struct cam_eb *bus, void *arg)
2101 struct ccb_dev_match *cdm;
2102 dev_match_ret retval;
2104 cdm = (struct ccb_dev_match *)arg;
2107 * If our position is for something deeper in the tree, that means
2108 * that we've already seen this node. So, we keep going down.
2110 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2111 && (cdm->pos.cookie.bus == bus)
2112 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2113 && (cdm->pos.cookie.target != NULL))
2114 retval = DM_RET_DESCEND;
2116 retval = xptbusmatch(cdm->patterns, cdm->num_patterns, bus);
2119 * If we got an error, bail out of the search.
2121 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
2122 cdm->status = CAM_DEV_MATCH_ERROR;
2127 * If the copy flag is set, copy this bus out.
2129 if (retval & DM_RET_COPY) {
2132 spaceleft = cdm->match_buf_len - (cdm->num_matches *
2133 sizeof(struct dev_match_result));
2136 * If we don't have enough space to put in another
2137 * match result, save our position and tell the
2138 * user there are more devices to check.
2140 if (spaceleft < sizeof(struct dev_match_result)) {
2141 bzero(&cdm->pos, sizeof(cdm->pos));
2142 cdm->pos.position_type =
2143 CAM_DEV_POS_EDT | CAM_DEV_POS_BUS;
2145 cdm->pos.cookie.bus = bus;
2146 cdm->pos.generations[CAM_BUS_GENERATION]=
2147 xsoftc.bus_generation;
2148 cdm->status = CAM_DEV_MATCH_MORE;
2151 j = cdm->num_matches;
2153 cdm->matches[j].type = DEV_MATCH_BUS;
2154 cdm->matches[j].result.bus_result.path_id = bus->path_id;
2155 cdm->matches[j].result.bus_result.bus_id = bus->sim->bus_id;
2156 cdm->matches[j].result.bus_result.unit_number =
2157 bus->sim->unit_number;
2158 strncpy(cdm->matches[j].result.bus_result.dev_name,
2159 bus->sim->sim_name, DEV_IDLEN);
2163 * If the user is only interested in busses, there's no
2164 * reason to descend to the next level in the tree.
2166 if ((retval & DM_RET_ACTION_MASK) == DM_RET_STOP)
2170 * If there is a target generation recorded, check it to
2171 * make sure the target list hasn't changed.
2173 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2174 && (bus == cdm->pos.cookie.bus)
2175 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2176 && (cdm->pos.generations[CAM_TARGET_GENERATION] != 0)
2177 && (cdm->pos.generations[CAM_TARGET_GENERATION] !=
2179 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2183 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2184 && (cdm->pos.cookie.bus == bus)
2185 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2186 && (cdm->pos.cookie.target != NULL))
2187 return(xpttargettraverse(bus,
2188 (struct cam_et *)cdm->pos.cookie.target,
2189 xptedttargetfunc, arg));
2191 return(xpttargettraverse(bus, NULL, xptedttargetfunc, arg));
2195 xptedttargetfunc(struct cam_et *target, void *arg)
2197 struct ccb_dev_match *cdm;
2199 cdm = (struct ccb_dev_match *)arg;
2202 * If there is a device list generation recorded, check it to
2203 * make sure the device list hasn't changed.
2205 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2206 && (cdm->pos.cookie.bus == target->bus)
2207 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2208 && (cdm->pos.cookie.target == target)
2209 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2210 && (cdm->pos.generations[CAM_DEV_GENERATION] != 0)
2211 && (cdm->pos.generations[CAM_DEV_GENERATION] !=
2212 target->generation)) {
2213 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2217 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2218 && (cdm->pos.cookie.bus == target->bus)
2219 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2220 && (cdm->pos.cookie.target == target)
2221 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2222 && (cdm->pos.cookie.device != NULL))
2223 return(xptdevicetraverse(target,
2224 (struct cam_ed *)cdm->pos.cookie.device,
2225 xptedtdevicefunc, arg));
2227 return(xptdevicetraverse(target, NULL, xptedtdevicefunc, arg));
2231 xptedtdevicefunc(struct cam_ed *device, void *arg)
2234 struct ccb_dev_match *cdm;
2235 dev_match_ret retval;
2237 cdm = (struct ccb_dev_match *)arg;
2240 * If our position is for something deeper in the tree, that means
2241 * that we've already seen this node. So, we keep going down.
2243 if ((cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2244 && (cdm->pos.cookie.device == device)
2245 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2246 && (cdm->pos.cookie.periph != NULL))
2247 retval = DM_RET_DESCEND;
2249 retval = xptdevicematch(cdm->patterns, cdm->num_patterns,
2252 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
2253 cdm->status = CAM_DEV_MATCH_ERROR;
2258 * If the copy flag is set, copy this device out.
2260 if (retval & DM_RET_COPY) {
2263 spaceleft = cdm->match_buf_len - (cdm->num_matches *
2264 sizeof(struct dev_match_result));
2267 * If we don't have enough space to put in another
2268 * match result, save our position and tell the
2269 * user there are more devices to check.
2271 if (spaceleft < sizeof(struct dev_match_result)) {
2272 bzero(&cdm->pos, sizeof(cdm->pos));
2273 cdm->pos.position_type =
2274 CAM_DEV_POS_EDT | CAM_DEV_POS_BUS |
2275 CAM_DEV_POS_TARGET | CAM_DEV_POS_DEVICE;
2277 cdm->pos.cookie.bus = device->target->bus;
2278 cdm->pos.generations[CAM_BUS_GENERATION]=
2279 xsoftc.bus_generation;
2280 cdm->pos.cookie.target = device->target;
2281 cdm->pos.generations[CAM_TARGET_GENERATION] =
2282 device->target->bus->generation;
2283 cdm->pos.cookie.device = device;
2284 cdm->pos.generations[CAM_DEV_GENERATION] =
2285 device->target->generation;
2286 cdm->status = CAM_DEV_MATCH_MORE;
2289 j = cdm->num_matches;
2291 cdm->matches[j].type = DEV_MATCH_DEVICE;
2292 cdm->matches[j].result.device_result.path_id =
2293 device->target->bus->path_id;
2294 cdm->matches[j].result.device_result.target_id =
2295 device->target->target_id;
2296 cdm->matches[j].result.device_result.target_lun =
2298 bcopy(&device->inq_data,
2299 &cdm->matches[j].result.device_result.inq_data,
2300 sizeof(struct scsi_inquiry_data));
2302 /* Let the user know whether this device is unconfigured */
2303 if (device->flags & CAM_DEV_UNCONFIGURED)
2304 cdm->matches[j].result.device_result.flags =
2305 DEV_RESULT_UNCONFIGURED;
2307 cdm->matches[j].result.device_result.flags =
2312 * If the user isn't interested in peripherals, don't descend
2313 * the tree any further.
2315 if ((retval & DM_RET_ACTION_MASK) == DM_RET_STOP)
2319 * If there is a peripheral list generation recorded, make sure
2320 * it hasn't changed.
2322 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2323 && (device->target->bus == cdm->pos.cookie.bus)
2324 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2325 && (device->target == cdm->pos.cookie.target)
2326 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2327 && (device == cdm->pos.cookie.device)
2328 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2329 && (cdm->pos.generations[CAM_PERIPH_GENERATION] != 0)
2330 && (cdm->pos.generations[CAM_PERIPH_GENERATION] !=
2331 device->generation)){
2332 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2336 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2337 && (cdm->pos.cookie.bus == device->target->bus)
2338 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2339 && (cdm->pos.cookie.target == device->target)
2340 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2341 && (cdm->pos.cookie.device == device)
2342 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2343 && (cdm->pos.cookie.periph != NULL))
2344 return(xptperiphtraverse(device,
2345 (struct cam_periph *)cdm->pos.cookie.periph,
2346 xptedtperiphfunc, arg));
2348 return(xptperiphtraverse(device, NULL, xptedtperiphfunc, arg));
2352 xptedtperiphfunc(struct cam_periph *periph, void *arg)
2354 struct ccb_dev_match *cdm;
2355 dev_match_ret retval;
2357 cdm = (struct ccb_dev_match *)arg;
2359 retval = xptperiphmatch(cdm->patterns, cdm->num_patterns, periph);
2361 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
2362 cdm->status = CAM_DEV_MATCH_ERROR;
2367 * If the copy flag is set, copy this peripheral out.
2369 if (retval & DM_RET_COPY) {
2372 spaceleft = cdm->match_buf_len - (cdm->num_matches *
2373 sizeof(struct dev_match_result));
2376 * If we don't have enough space to put in another
2377 * match result, save our position and tell the
2378 * user there are more devices to check.
2380 if (spaceleft < sizeof(struct dev_match_result)) {
2381 bzero(&cdm->pos, sizeof(cdm->pos));
2382 cdm->pos.position_type =
2383 CAM_DEV_POS_EDT | CAM_DEV_POS_BUS |
2384 CAM_DEV_POS_TARGET | CAM_DEV_POS_DEVICE |
2387 cdm->pos.cookie.bus = periph->path->bus;
2388 cdm->pos.generations[CAM_BUS_GENERATION]=
2389 xsoftc.bus_generation;
2390 cdm->pos.cookie.target = periph->path->target;
2391 cdm->pos.generations[CAM_TARGET_GENERATION] =
2392 periph->path->bus->generation;
2393 cdm->pos.cookie.device = periph->path->device;
2394 cdm->pos.generations[CAM_DEV_GENERATION] =
2395 periph->path->target->generation;
2396 cdm->pos.cookie.periph = periph;
2397 cdm->pos.generations[CAM_PERIPH_GENERATION] =
2398 periph->path->device->generation;
2399 cdm->status = CAM_DEV_MATCH_MORE;
2403 j = cdm->num_matches;
2405 cdm->matches[j].type = DEV_MATCH_PERIPH;
2406 cdm->matches[j].result.periph_result.path_id =
2407 periph->path->bus->path_id;
2408 cdm->matches[j].result.periph_result.target_id =
2409 periph->path->target->target_id;
2410 cdm->matches[j].result.periph_result.target_lun =
2411 periph->path->device->lun_id;
2412 cdm->matches[j].result.periph_result.unit_number =
2413 periph->unit_number;
2414 strncpy(cdm->matches[j].result.periph_result.periph_name,
2415 periph->periph_name, DEV_IDLEN);
2422 xptedtmatch(struct ccb_dev_match *cdm)
2426 cdm->num_matches = 0;
2429 * Check the bus list generation. If it has changed, the user
2430 * needs to reset everything and start over.
2432 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2433 && (cdm->pos.generations[CAM_BUS_GENERATION] != 0)
2434 && (cdm->pos.generations[CAM_BUS_GENERATION] != xsoftc.bus_generation)) {
2435 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2439 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2440 && (cdm->pos.cookie.bus != NULL))
2441 ret = xptbustraverse((struct cam_eb *)cdm->pos.cookie.bus,
2442 xptedtbusfunc, cdm);
2444 ret = xptbustraverse(NULL, xptedtbusfunc, cdm);
2447 * If we get back 0, that means that we had to stop before fully
2448 * traversing the EDT. It also means that one of the subroutines
2449 * has set the status field to the proper value. If we get back 1,
2450 * we've fully traversed the EDT and copied out any matching entries.
2453 cdm->status = CAM_DEV_MATCH_LAST;
2459 xptplistpdrvfunc(struct periph_driver **pdrv, void *arg)
2461 struct ccb_dev_match *cdm;
2463 cdm = (struct ccb_dev_match *)arg;
2465 if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR)
2466 && (cdm->pos.cookie.pdrv == pdrv)
2467 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2468 && (cdm->pos.generations[CAM_PERIPH_GENERATION] != 0)
2469 && (cdm->pos.generations[CAM_PERIPH_GENERATION] !=
2470 (*pdrv)->generation)) {
2471 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2475 if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR)
2476 && (cdm->pos.cookie.pdrv == pdrv)
2477 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2478 && (cdm->pos.cookie.periph != NULL))
2479 return(xptpdperiphtraverse(pdrv,
2480 (struct cam_periph *)cdm->pos.cookie.periph,
2481 xptplistperiphfunc, arg));
2483 return(xptpdperiphtraverse(pdrv, NULL,xptplistperiphfunc, arg));
2487 xptplistperiphfunc(struct cam_periph *periph, void *arg)
2489 struct ccb_dev_match *cdm;
2490 dev_match_ret retval;
2492 cdm = (struct ccb_dev_match *)arg;
2494 retval = xptperiphmatch(cdm->patterns, cdm->num_patterns, periph);
2496 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
2497 cdm->status = CAM_DEV_MATCH_ERROR;
2502 * If the copy flag is set, copy this peripheral out.
2504 if (retval & DM_RET_COPY) {
2507 spaceleft = cdm->match_buf_len - (cdm->num_matches *
2508 sizeof(struct dev_match_result));
2511 * If we don't have enough space to put in another
2512 * match result, save our position and tell the
2513 * user there are more devices to check.
2515 if (spaceleft < sizeof(struct dev_match_result)) {
2516 struct periph_driver **pdrv;
2519 bzero(&cdm->pos, sizeof(cdm->pos));
2520 cdm->pos.position_type =
2521 CAM_DEV_POS_PDRV | CAM_DEV_POS_PDPTR |
2525 * This may look a bit non-sensical, but it is
2526 * actually quite logical. There are very few
2527 * peripheral drivers, and bloating every peripheral
2528 * structure with a pointer back to its parent
2529 * peripheral driver linker set entry would cost
2530 * more in the long run than doing this quick lookup.
2532 for (pdrv = periph_drivers; *pdrv != NULL; pdrv++) {
2533 if (strcmp((*pdrv)->driver_name,
2534 periph->periph_name) == 0)
2538 if (*pdrv == NULL) {
2539 cdm->status = CAM_DEV_MATCH_ERROR;
2543 cdm->pos.cookie.pdrv = pdrv;
2545 * The periph generation slot does double duty, as
2546 * does the periph pointer slot. They are used for
2547 * both edt and pdrv lookups and positioning.
2549 cdm->pos.cookie.periph = periph;
2550 cdm->pos.generations[CAM_PERIPH_GENERATION] =
2551 (*pdrv)->generation;
2552 cdm->status = CAM_DEV_MATCH_MORE;
2556 j = cdm->num_matches;
2558 cdm->matches[j].type = DEV_MATCH_PERIPH;
2559 cdm->matches[j].result.periph_result.path_id =
2560 periph->path->bus->path_id;
2563 * The transport layer peripheral doesn't have a target or
2566 if (periph->path->target)
2567 cdm->matches[j].result.periph_result.target_id =
2568 periph->path->target->target_id;
2570 cdm->matches[j].result.periph_result.target_id = -1;
2572 if (periph->path->device)
2573 cdm->matches[j].result.periph_result.target_lun =
2574 periph->path->device->lun_id;
2576 cdm->matches[j].result.periph_result.target_lun = -1;
2578 cdm->matches[j].result.periph_result.unit_number =
2579 periph->unit_number;
2580 strncpy(cdm->matches[j].result.periph_result.periph_name,
2581 periph->periph_name, DEV_IDLEN);
2588 xptperiphlistmatch(struct ccb_dev_match *cdm)
2592 cdm->num_matches = 0;
2595 * At this point in the edt traversal function, we check the bus
2596 * list generation to make sure that no busses have been added or
2597 * removed since the user last sent a XPT_DEV_MATCH ccb through.
2598 * For the peripheral driver list traversal function, however, we
2599 * don't have to worry about new peripheral driver types coming or
2600 * going; they're in a linker set, and therefore can't change
2601 * without a recompile.
2604 if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR)
2605 && (cdm->pos.cookie.pdrv != NULL))
2606 ret = xptpdrvtraverse(
2607 (struct periph_driver **)cdm->pos.cookie.pdrv,
2608 xptplistpdrvfunc, cdm);
2610 ret = xptpdrvtraverse(NULL, xptplistpdrvfunc, cdm);
2613 * If we get back 0, that means that we had to stop before fully
2614 * traversing the peripheral driver tree. It also means that one of
2615 * the subroutines has set the status field to the proper value. If
2616 * we get back 1, we've fully traversed the EDT and copied out any
2620 cdm->status = CAM_DEV_MATCH_LAST;
2626 xptbustraverse(struct cam_eb *start_bus, xpt_busfunc_t *tr_func, void *arg)
2628 struct cam_eb *bus, *next_bus;
2633 lockmgr(&xsoftc.xpt_topo_lock, LK_EXCLUSIVE);
2634 for (bus = (start_bus ? start_bus : TAILQ_FIRST(&xsoftc.xpt_busses));
2637 next_bus = TAILQ_NEXT(bus, links);
2639 lockmgr(&xsoftc.xpt_topo_lock, LK_RELEASE);
2640 CAM_SIM_LOCK(bus->sim);
2641 retval = tr_func(bus, arg);
2642 CAM_SIM_UNLOCK(bus->sim);
2645 lockmgr(&xsoftc.xpt_topo_lock, LK_EXCLUSIVE);
2647 lockmgr(&xsoftc.xpt_topo_lock, LK_RELEASE);
2653 xpttargettraverse(struct cam_eb *bus, struct cam_et *start_target,
2654 xpt_targetfunc_t *tr_func, void *arg)
2656 struct cam_et *target, *next_target;
2660 for (target = (start_target ? start_target :
2661 TAILQ_FIRST(&bus->et_entries));
2662 target != NULL; target = next_target) {
2664 next_target = TAILQ_NEXT(target, links);
2666 retval = tr_func(target, arg);
2676 xptdevicetraverse(struct cam_et *target, struct cam_ed *start_device,
2677 xpt_devicefunc_t *tr_func, void *arg)
2679 struct cam_ed *device, *next_device;
2683 for (device = (start_device ? start_device :
2684 TAILQ_FIRST(&target->ed_entries));
2686 device = next_device) {
2688 next_device = TAILQ_NEXT(device, links);
2690 retval = tr_func(device, arg);
2700 xptperiphtraverse(struct cam_ed *device, struct cam_periph *start_periph,
2701 xpt_periphfunc_t *tr_func, void *arg)
2703 struct cam_periph *periph, *next_periph;
2708 for (periph = (start_periph ? start_periph :
2709 SLIST_FIRST(&device->periphs));
2711 periph = next_periph) {
2713 next_periph = SLIST_NEXT(periph, periph_links);
2715 retval = tr_func(periph, arg);
2724 xptpdrvtraverse(struct periph_driver **start_pdrv,
2725 xpt_pdrvfunc_t *tr_func, void *arg)
2727 struct periph_driver **pdrv;
2733 * We don't traverse the peripheral driver list like we do the
2734 * other lists, because it is a linker set, and therefore cannot be
2735 * changed during runtime. If the peripheral driver list is ever
2736 * re-done to be something other than a linker set (i.e. it can
2737 * change while the system is running), the list traversal should
2738 * be modified to work like the other traversal functions.
2740 for (pdrv = (start_pdrv ? start_pdrv : periph_drivers);
2741 *pdrv != NULL; pdrv++) {
2742 retval = tr_func(pdrv, arg);
2752 xptpdperiphtraverse(struct periph_driver **pdrv,
2753 struct cam_periph *start_periph,
2754 xpt_periphfunc_t *tr_func, void *arg)
2756 struct cam_periph *periph, *next_periph;
2761 for (periph = (start_periph ? start_periph :
2762 TAILQ_FIRST(&(*pdrv)->units)); periph != NULL;
2763 periph = next_periph) {
2765 next_periph = TAILQ_NEXT(periph, unit_links);
2767 retval = tr_func(periph, arg);
2775 xptdefbusfunc(struct cam_eb *bus, void *arg)
2777 struct xpt_traverse_config *tr_config;
2779 tr_config = (struct xpt_traverse_config *)arg;
2781 if (tr_config->depth == XPT_DEPTH_BUS) {
2782 xpt_busfunc_t *tr_func;
2784 tr_func = (xpt_busfunc_t *)tr_config->tr_func;
2786 return(tr_func(bus, tr_config->tr_arg));
2788 return(xpttargettraverse(bus, NULL, xptdeftargetfunc, arg));
2792 xptdeftargetfunc(struct cam_et *target, void *arg)
2794 struct xpt_traverse_config *tr_config;
2796 tr_config = (struct xpt_traverse_config *)arg;
2798 if (tr_config->depth == XPT_DEPTH_TARGET) {
2799 xpt_targetfunc_t *tr_func;
2801 tr_func = (xpt_targetfunc_t *)tr_config->tr_func;
2803 return(tr_func(target, tr_config->tr_arg));
2805 return(xptdevicetraverse(target, NULL, xptdefdevicefunc, arg));
2809 xptdefdevicefunc(struct cam_ed *device, void *arg)
2811 struct xpt_traverse_config *tr_config;
2813 tr_config = (struct xpt_traverse_config *)arg;
2815 if (tr_config->depth == XPT_DEPTH_DEVICE) {
2816 xpt_devicefunc_t *tr_func;
2818 tr_func = (xpt_devicefunc_t *)tr_config->tr_func;
2820 return(tr_func(device, tr_config->tr_arg));
2822 return(xptperiphtraverse(device, NULL, xptdefperiphfunc, arg));
2826 xptdefperiphfunc(struct cam_periph *periph, void *arg)
2828 struct xpt_traverse_config *tr_config;
2829 xpt_periphfunc_t *tr_func;
2831 tr_config = (struct xpt_traverse_config *)arg;
2833 tr_func = (xpt_periphfunc_t *)tr_config->tr_func;
2836 * Unlike the other default functions, we don't check for depth
2837 * here. The peripheral driver level is the last level in the EDT,
2838 * so if we're here, we should execute the function in question.
2840 return(tr_func(periph, tr_config->tr_arg));
2844 * Execute the given function for every bus in the EDT.
2847 xpt_for_all_busses(xpt_busfunc_t *tr_func, void *arg)
2849 struct xpt_traverse_config tr_config;
2851 tr_config.depth = XPT_DEPTH_BUS;
2852 tr_config.tr_func = tr_func;
2853 tr_config.tr_arg = arg;
2855 return(xptbustraverse(NULL, xptdefbusfunc, &tr_config));
2859 * Execute the given function for every device in the EDT.
2862 xpt_for_all_devices(xpt_devicefunc_t *tr_func, void *arg)
2864 struct xpt_traverse_config tr_config;
2866 tr_config.depth = XPT_DEPTH_DEVICE;
2867 tr_config.tr_func = tr_func;
2868 tr_config.tr_arg = arg;
2870 return(xptbustraverse(NULL, xptdefbusfunc, &tr_config));
2874 xptsetasyncfunc(struct cam_ed *device, void *arg)
2876 struct cam_path path;
2877 struct ccb_getdev cgd;
2878 struct async_node *cur_entry;
2880 cur_entry = (struct async_node *)arg;
2883 * Don't report unconfigured devices (Wildcard devs,
2884 * devices only for target mode, device instances
2885 * that have been invalidated but are waiting for
2886 * their last reference count to be released).
2888 if ((device->flags & CAM_DEV_UNCONFIGURED) != 0)
2891 xpt_compile_path(&path,
2893 device->target->bus->path_id,
2894 device->target->target_id,
2896 xpt_setup_ccb(&cgd.ccb_h, &path, /*priority*/1);
2897 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
2898 xpt_action((union ccb *)&cgd);
2899 cur_entry->callback(cur_entry->callback_arg,
2902 xpt_release_path(&path);
2908 xptsetasyncbusfunc(struct cam_eb *bus, void *arg)
2910 struct cam_path path;
2911 struct ccb_pathinq cpi;
2912 struct async_node *cur_entry;
2914 cur_entry = (struct async_node *)arg;
2916 xpt_compile_path(&path, /*periph*/NULL,
2918 CAM_TARGET_WILDCARD,
2920 xpt_setup_ccb(&cpi.ccb_h, &path, /*priority*/1);
2921 cpi.ccb_h.func_code = XPT_PATH_INQ;
2922 xpt_action((union ccb *)&cpi);
2923 cur_entry->callback(cur_entry->callback_arg,
2926 xpt_release_path(&path);
2932 xpt_action_sasync_cb(void *context, int pending)
2934 struct async_node *cur_entry;
2935 struct xpt_task *task;
2938 task = (struct xpt_task *)context;
2939 cur_entry = (struct async_node *)task->data1;
2940 added = task->data2;
2942 if ((added & AC_FOUND_DEVICE) != 0) {
2944 * Get this peripheral up to date with all
2945 * the currently existing devices.
2947 xpt_for_all_devices(xptsetasyncfunc, cur_entry);
2949 if ((added & AC_PATH_REGISTERED) != 0) {
2951 * Get this peripheral up to date with all
2952 * the currently existing busses.
2954 xpt_for_all_busses(xptsetasyncbusfunc, cur_entry);
2956 kfree(task, M_CAMXPT);
2960 xpt_action(union ccb *start_ccb)
2962 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("xpt_action\n"));
2964 start_ccb->ccb_h.status = CAM_REQ_INPROG;
2966 switch (start_ccb->ccb_h.func_code) {
2969 struct cam_ed *device;
2971 char cdb_str[(SCSI_MAX_CDBLEN * 3) + 1];
2972 struct cam_path *path;
2974 path = start_ccb->ccb_h.path;
2978 * For the sake of compatibility with SCSI-1
2979 * devices that may not understand the identify
2980 * message, we include lun information in the
2981 * second byte of all commands. SCSI-1 specifies
2982 * that luns are a 3 bit value and reserves only 3
2983 * bits for lun information in the CDB. Later
2984 * revisions of the SCSI spec allow for more than 8
2985 * luns, but have deprecated lun information in the
2986 * CDB. So, if the lun won't fit, we must omit.
2988 * Also be aware that during initial probing for devices,
2989 * the inquiry information is unknown but initialized to 0.
2990 * This means that this code will be exercised while probing
2991 * devices with an ANSI revision greater than 2.
2993 device = start_ccb->ccb_h.path->device;
2994 if (device->protocol_version <= SCSI_REV_2
2995 && start_ccb->ccb_h.target_lun < 8
2996 && (start_ccb->ccb_h.flags & CAM_CDB_POINTER) == 0) {
2998 start_ccb->csio.cdb_io.cdb_bytes[1] |=
2999 start_ccb->ccb_h.target_lun << 5;
3001 start_ccb->csio.scsi_status = SCSI_STATUS_OK;
3002 CAM_DEBUG(path, CAM_DEBUG_CDB,("%s. CDB: %s\n",
3003 scsi_op_desc(start_ccb->csio.cdb_io.cdb_bytes[0],
3004 &path->device->inq_data),
3005 scsi_cdb_string(start_ccb->csio.cdb_io.cdb_bytes,
3006 cdb_str, sizeof(cdb_str))));
3010 case XPT_CONT_TARGET_IO:
3011 start_ccb->csio.sense_resid = 0;
3012 start_ccb->csio.resid = 0;
3017 struct cam_path *path;
3018 struct cam_sim *sim;
3021 path = start_ccb->ccb_h.path;
3023 sim = path->bus->sim;
3024 if (sim == &cam_dead_sim) {
3025 /* The SIM has gone; just execute the CCB directly. */
3026 cam_ccbq_send_ccb(&path->device->ccbq, start_ccb);
3027 (*(sim->sim_action))(sim, start_ccb);
3031 cam_ccbq_insert_ccb(&path->device->ccbq, start_ccb);
3032 if (path->device->qfrozen_cnt == 0)
3033 runq = xpt_schedule_dev_sendq(path->bus, path->device);
3037 xpt_run_dev_sendq(path->bus);
3040 case XPT_SET_TRAN_SETTINGS:
3042 xpt_set_transfer_settings(&start_ccb->cts,
3043 start_ccb->ccb_h.path->device,
3044 /*async_update*/FALSE);
3047 case XPT_CALC_GEOMETRY:
3049 struct cam_sim *sim;
3051 /* Filter out garbage */
3052 if (start_ccb->ccg.block_size == 0
3053 || start_ccb->ccg.volume_size == 0) {
3054 start_ccb->ccg.cylinders = 0;
3055 start_ccb->ccg.heads = 0;
3056 start_ccb->ccg.secs_per_track = 0;
3057 start_ccb->ccb_h.status = CAM_REQ_CMP;
3060 sim = start_ccb->ccb_h.path->bus->sim;
3061 (*(sim->sim_action))(sim, start_ccb);
3066 union ccb* abort_ccb;
3068 abort_ccb = start_ccb->cab.abort_ccb;
3069 if (XPT_FC_IS_DEV_QUEUED(abort_ccb)) {
3071 if (abort_ccb->ccb_h.pinfo.index >= 0) {
3072 struct cam_ccbq *ccbq;
3074 ccbq = &abort_ccb->ccb_h.path->device->ccbq;
3075 cam_ccbq_remove_ccb(ccbq, abort_ccb);
3076 abort_ccb->ccb_h.status =
3077 CAM_REQ_ABORTED|CAM_DEV_QFRZN;
3078 xpt_freeze_devq(abort_ccb->ccb_h.path, 1);
3079 xpt_done(abort_ccb);
3080 start_ccb->ccb_h.status = CAM_REQ_CMP;
3083 if (abort_ccb->ccb_h.pinfo.index == CAM_UNQUEUED_INDEX
3084 && (abort_ccb->ccb_h.status & CAM_SIM_QUEUED) == 0) {
3086 * We've caught this ccb en route to
3087 * the SIM. Flag it for abort and the
3088 * SIM will do so just before starting
3089 * real work on the CCB.
3091 abort_ccb->ccb_h.status =
3092 CAM_REQ_ABORTED|CAM_DEV_QFRZN;
3093 xpt_freeze_devq(abort_ccb->ccb_h.path, 1);
3094 start_ccb->ccb_h.status = CAM_REQ_CMP;
3098 if (XPT_FC_IS_QUEUED(abort_ccb)
3099 && (abort_ccb->ccb_h.pinfo.index == CAM_DONEQ_INDEX)) {
3101 * It's already completed but waiting
3102 * for our SWI to get to it.
3104 start_ccb->ccb_h.status = CAM_UA_ABORT;
3108 * If we weren't able to take care of the abort request
3109 * in the XPT, pass the request down to the SIM for processing.
3113 case XPT_ACCEPT_TARGET_IO:
3115 case XPT_IMMED_NOTIFY:
3116 case XPT_NOTIFY_ACK:
3117 case XPT_GET_TRAN_SETTINGS:
3120 struct cam_sim *sim;
3122 sim = start_ccb->ccb_h.path->bus->sim;
3123 (*(sim->sim_action))(sim, start_ccb);
3128 struct cam_sim *sim;
3130 sim = start_ccb->ccb_h.path->bus->sim;
3131 (*(sim->sim_action))(sim, start_ccb);
3134 case XPT_PATH_STATS:
3135 start_ccb->cpis.last_reset =
3136 start_ccb->ccb_h.path->bus->last_reset;
3137 start_ccb->ccb_h.status = CAM_REQ_CMP;
3143 dev = start_ccb->ccb_h.path->device;
3144 if ((dev->flags & CAM_DEV_UNCONFIGURED) != 0) {
3145 start_ccb->ccb_h.status = CAM_DEV_NOT_THERE;
3147 struct ccb_getdev *cgd;
3151 cgd = &start_ccb->cgd;
3152 bus = cgd->ccb_h.path->bus;
3153 tar = cgd->ccb_h.path->target;
3154 cgd->inq_data = dev->inq_data;
3155 cgd->ccb_h.status = CAM_REQ_CMP;
3156 cgd->serial_num_len = dev->serial_num_len;
3157 if ((dev->serial_num_len > 0)
3158 && (dev->serial_num != NULL))
3159 bcopy(dev->serial_num, cgd->serial_num,
3160 dev->serial_num_len);
3164 case XPT_GDEV_STATS:
3168 dev = start_ccb->ccb_h.path->device;
3169 if ((dev->flags & CAM_DEV_UNCONFIGURED) != 0) {
3170 start_ccb->ccb_h.status = CAM_DEV_NOT_THERE;
3172 struct ccb_getdevstats *cgds;
3176 cgds = &start_ccb->cgds;
3177 bus = cgds->ccb_h.path->bus;
3178 tar = cgds->ccb_h.path->target;
3179 cgds->dev_openings = dev->ccbq.dev_openings;
3180 cgds->dev_active = dev->ccbq.dev_active;
3181 cgds->devq_openings = dev->ccbq.devq_openings;
3182 cgds->devq_queued = dev->ccbq.queue.entries;
3183 cgds->held = dev->ccbq.held;
3184 cgds->last_reset = tar->last_reset;
3185 cgds->maxtags = dev->quirk->maxtags;
3186 cgds->mintags = dev->quirk->mintags;
3187 if (timevalcmp(&tar->last_reset, &bus->last_reset, <))
3188 cgds->last_reset = bus->last_reset;
3189 cgds->ccb_h.status = CAM_REQ_CMP;
3195 struct cam_periph *nperiph;
3196 struct periph_list *periph_head;
3197 struct ccb_getdevlist *cgdl;
3199 struct cam_ed *device;
3206 * Don't want anyone mucking with our data.
3208 device = start_ccb->ccb_h.path->device;
3209 periph_head = &device->periphs;
3210 cgdl = &start_ccb->cgdl;
3213 * Check and see if the list has changed since the user
3214 * last requested a list member. If so, tell them that the
3215 * list has changed, and therefore they need to start over
3216 * from the beginning.
3218 if ((cgdl->index != 0) &&
3219 (cgdl->generation != device->generation)) {
3220 cgdl->status = CAM_GDEVLIST_LIST_CHANGED;
3225 * Traverse the list of peripherals and attempt to find
3226 * the requested peripheral.
3228 for (nperiph = SLIST_FIRST(periph_head), i = 0;
3229 (nperiph != NULL) && (i <= cgdl->index);
3230 nperiph = SLIST_NEXT(nperiph, periph_links), i++) {
3231 if (i == cgdl->index) {
3232 strncpy(cgdl->periph_name,
3233 nperiph->periph_name,
3235 cgdl->unit_number = nperiph->unit_number;
3240 cgdl->status = CAM_GDEVLIST_ERROR;
3244 if (nperiph == NULL)
3245 cgdl->status = CAM_GDEVLIST_LAST_DEVICE;
3247 cgdl->status = CAM_GDEVLIST_MORE_DEVS;
3250 cgdl->generation = device->generation;
3252 cgdl->ccb_h.status = CAM_REQ_CMP;
3257 dev_pos_type position_type;
3258 struct ccb_dev_match *cdm;
3261 cdm = &start_ccb->cdm;
3264 * There are two ways of getting at information in the EDT.
3265 * The first way is via the primary EDT tree. It starts
3266 * with a list of busses, then a list of targets on a bus,
3267 * then devices/luns on a target, and then peripherals on a
3268 * device/lun. The "other" way is by the peripheral driver
3269 * lists. The peripheral driver lists are organized by
3270 * peripheral driver. (obviously) So it makes sense to
3271 * use the peripheral driver list if the user is looking
3272 * for something like "da1", or all "da" devices. If the
3273 * user is looking for something on a particular bus/target
3274 * or lun, it's generally better to go through the EDT tree.
3277 if (cdm->pos.position_type != CAM_DEV_POS_NONE)
3278 position_type = cdm->pos.position_type;
3282 position_type = CAM_DEV_POS_NONE;
3284 for (i = 0; i < cdm->num_patterns; i++) {
3285 if ((cdm->patterns[i].type == DEV_MATCH_BUS)
3286 ||(cdm->patterns[i].type == DEV_MATCH_DEVICE)){
3287 position_type = CAM_DEV_POS_EDT;
3292 if (cdm->num_patterns == 0)
3293 position_type = CAM_DEV_POS_EDT;
3294 else if (position_type == CAM_DEV_POS_NONE)
3295 position_type = CAM_DEV_POS_PDRV;
3298 switch(position_type & CAM_DEV_POS_TYPEMASK) {
3299 case CAM_DEV_POS_EDT:
3300 ret = xptedtmatch(cdm);
3302 case CAM_DEV_POS_PDRV:
3303 ret = xptperiphlistmatch(cdm);
3306 cdm->status = CAM_DEV_MATCH_ERROR;
3310 if (cdm->status == CAM_DEV_MATCH_ERROR)
3311 start_ccb->ccb_h.status = CAM_REQ_CMP_ERR;
3313 start_ccb->ccb_h.status = CAM_REQ_CMP;
3319 struct ccb_setasync *csa;
3320 struct async_node *cur_entry;
3321 struct async_list *async_head;
3324 csa = &start_ccb->csa;
3325 added = csa->event_enable;
3326 async_head = &csa->ccb_h.path->device->asyncs;
3329 * If there is already an entry for us, simply
3332 cur_entry = SLIST_FIRST(async_head);
3333 while (cur_entry != NULL) {
3334 if ((cur_entry->callback_arg == csa->callback_arg)
3335 && (cur_entry->callback == csa->callback))
3337 cur_entry = SLIST_NEXT(cur_entry, links);
3340 if (cur_entry != NULL) {
3342 * If the request has no flags set,
3345 added &= ~cur_entry->event_enable;
3346 if (csa->event_enable == 0) {
3347 SLIST_REMOVE(async_head, cur_entry,
3349 csa->ccb_h.path->device->refcount--;
3350 kfree(cur_entry, M_CAMXPT);
3352 cur_entry->event_enable = csa->event_enable;
3355 cur_entry = kmalloc(sizeof(*cur_entry), M_CAMXPT,
3357 cur_entry->event_enable = csa->event_enable;
3358 cur_entry->callback_arg = csa->callback_arg;
3359 cur_entry->callback = csa->callback;
3360 SLIST_INSERT_HEAD(async_head, cur_entry, links);
3361 csa->ccb_h.path->device->refcount++;
3365 * Need to decouple this operation via a taskqueue so that
3366 * the locking doesn't become a mess.
3368 if ((added & (AC_FOUND_DEVICE | AC_PATH_REGISTERED)) != 0) {
3369 struct xpt_task *task;
3371 task = kmalloc(sizeof(struct xpt_task), M_CAMXPT,
3374 TASK_INIT(&task->task, 0, xpt_action_sasync_cb, task);
3375 task->data1 = cur_entry;
3376 task->data2 = added;
3377 taskqueue_enqueue(taskqueue_thread[mycpuid],
3381 start_ccb->ccb_h.status = CAM_REQ_CMP;
3386 struct ccb_relsim *crs;
3389 crs = &start_ccb->crs;
3390 dev = crs->ccb_h.path->device;
3393 crs->ccb_h.status = CAM_DEV_NOT_THERE;
3397 if ((crs->release_flags & RELSIM_ADJUST_OPENINGS) != 0) {
3399 if (INQ_DATA_TQ_ENABLED(&dev->inq_data)) {
3400 /* Don't ever go below one opening */
3401 if (crs->openings > 0) {
3402 xpt_dev_ccbq_resize(crs->ccb_h.path,
3406 xpt_print(crs->ccb_h.path,
3407 "tagged openings now %d\n",
3414 if ((crs->release_flags & RELSIM_RELEASE_AFTER_TIMEOUT) != 0) {
3416 if ((dev->flags & CAM_DEV_REL_TIMEOUT_PENDING) != 0) {
3419 * Just extend the old timeout and decrement
3420 * the freeze count so that a single timeout
3421 * is sufficient for releasing the queue.
3423 start_ccb->ccb_h.flags &= ~CAM_DEV_QFREEZE;
3424 callout_stop(&dev->callout);
3427 start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
3430 callout_reset(&dev->callout,
3431 (crs->release_timeout * hz) / 1000,
3432 xpt_release_devq_timeout, dev);
3434 dev->flags |= CAM_DEV_REL_TIMEOUT_PENDING;
3438 if ((crs->release_flags & RELSIM_RELEASE_AFTER_CMDCMPLT) != 0) {
3440 if ((dev->flags & CAM_DEV_REL_ON_COMPLETE) != 0) {
3442 * Decrement the freeze count so that a single
3443 * completion is still sufficient to unfreeze
3446 start_ccb->ccb_h.flags &= ~CAM_DEV_QFREEZE;
3449 dev->flags |= CAM_DEV_REL_ON_COMPLETE;
3450 start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
3454 if ((crs->release_flags & RELSIM_RELEASE_AFTER_QEMPTY) != 0) {
3456 if ((dev->flags & CAM_DEV_REL_ON_QUEUE_EMPTY) != 0
3457 || (dev->ccbq.dev_active == 0)) {
3459 start_ccb->ccb_h.flags &= ~CAM_DEV_QFREEZE;
3462 dev->flags |= CAM_DEV_REL_ON_QUEUE_EMPTY;
3463 start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
3467 if ((start_ccb->ccb_h.flags & CAM_DEV_QFREEZE) == 0) {
3469 xpt_release_devq(crs->ccb_h.path, /*count*/1,
3472 start_ccb->crs.qfrozen_cnt = dev->qfrozen_cnt;
3473 start_ccb->ccb_h.status = CAM_REQ_CMP;
3477 xpt_scan_bus(start_ccb->ccb_h.path->periph, start_ccb);
3480 xpt_scan_lun(start_ccb->ccb_h.path->periph,
3481 start_ccb->ccb_h.path, start_ccb->crcn.flags,
3486 #ifdef CAM_DEBUG_DELAY
3487 cam_debug_delay = CAM_DEBUG_DELAY;
3489 cam_dflags = start_ccb->cdbg.flags;
3490 if (cam_dpath != NULL) {
3491 xpt_free_path(cam_dpath);
3495 if (cam_dflags != CAM_DEBUG_NONE) {
3496 if (xpt_create_path(&cam_dpath, xpt_periph,
3497 start_ccb->ccb_h.path_id,
3498 start_ccb->ccb_h.target_id,
3499 start_ccb->ccb_h.target_lun) !=
3501 start_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
3502 cam_dflags = CAM_DEBUG_NONE;
3504 start_ccb->ccb_h.status = CAM_REQ_CMP;
3505 xpt_print(cam_dpath, "debugging flags now %x\n",
3510 start_ccb->ccb_h.status = CAM_REQ_CMP;
3512 #else /* !CAMDEBUG */
3513 start_ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
3514 #endif /* CAMDEBUG */
3518 if ((start_ccb->ccb_h.flags & CAM_DEV_QFREEZE) != 0)
3519 xpt_freeze_devq(start_ccb->ccb_h.path, 1);
3520 start_ccb->ccb_h.status = CAM_REQ_CMP;
3527 start_ccb->ccb_h.status = CAM_PROVIDE_FAIL;
3533 xpt_polled_action(union ccb *start_ccb)
3536 struct cam_sim *sim;
3537 struct cam_devq *devq;
3540 timeout = start_ccb->ccb_h.timeout;
3541 sim = start_ccb->ccb_h.path->bus->sim;
3543 dev = start_ccb->ccb_h.path->device;
3545 sim_lock_assert_owned(sim->lock);
3548 * Steal an opening so that no other queued requests
3549 * can get it before us while we simulate interrupts.
3551 dev->ccbq.devq_openings--;
3552 dev->ccbq.dev_openings--;
3554 while(((devq && devq->send_openings <= 0) || dev->ccbq.dev_openings < 0)
3555 && (--timeout > 0)) {
3557 (*(sim->sim_poll))(sim);
3558 camisr_runqueue(sim);
3561 dev->ccbq.devq_openings++;
3562 dev->ccbq.dev_openings++;
3565 xpt_action(start_ccb);
3566 while(--timeout > 0) {
3567 (*(sim->sim_poll))(sim);
3568 camisr_runqueue(sim);
3569 if ((start_ccb->ccb_h.status & CAM_STATUS_MASK)
3576 * XXX Is it worth adding a sim_timeout entry
3577 * point so we can attempt recovery? If
3578 * this is only used for dumps, I don't think
3581 start_ccb->ccb_h.status = CAM_CMD_TIMEOUT;
3584 start_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
3589 * Schedule a peripheral driver to receive a ccb when it's
3590 * target device has space for more transactions.
3593 xpt_schedule(struct cam_periph *perph, u_int32_t new_priority)
3595 struct cam_ed *device;
3596 union ccb *work_ccb;
3599 sim_lock_assert_owned(perph->sim->lock);
3601 CAM_DEBUG(perph->path, CAM_DEBUG_TRACE, ("xpt_schedule\n"));
3602 device = perph->path->device;
3603 if (periph_is_queued(perph)) {
3604 /* Simply reorder based on new priority */
3605 CAM_DEBUG(perph->path, CAM_DEBUG_SUBTRACE,
3606 (" change priority to %d\n", new_priority));
3607 if (new_priority < perph->pinfo.priority) {
3608 camq_change_priority(&device->drvq,
3613 } else if (perph->path->bus->sim == &cam_dead_sim) {
3614 /* The SIM is gone so just call periph_start directly. */
3615 work_ccb = xpt_get_ccb(perph->path->device);
3616 if (work_ccb == NULL)
3618 xpt_setup_ccb(&work_ccb->ccb_h, perph->path, new_priority);
3619 perph->pinfo.priority = new_priority;
3620 perph->periph_start(perph, work_ccb);
3623 /* New entry on the queue */
3624 CAM_DEBUG(perph->path, CAM_DEBUG_SUBTRACE,
3625 (" added periph to queue\n"));
3626 perph->pinfo.priority = new_priority;
3627 perph->pinfo.generation = ++device->drvq.generation;
3628 camq_insert(&device->drvq, &perph->pinfo);
3629 runq = xpt_schedule_dev_allocq(perph->path->bus, device);
3632 CAM_DEBUG(perph->path, CAM_DEBUG_SUBTRACE,
3633 (" calling xpt_run_devq\n"));
3634 xpt_run_dev_allocq(perph->path->bus);
3640 * Schedule a device to run on a given queue.
3641 * If the device was inserted as a new entry on the queue,
3642 * return 1 meaning the device queue should be run. If we
3643 * were already queued, implying someone else has already
3644 * started the queue, return 0 so the caller doesn't attempt
3648 xpt_schedule_dev(struct camq *queue, cam_pinfo *pinfo,
3649 u_int32_t new_priority)
3652 u_int32_t old_priority;
3654 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_schedule_dev\n"));
3656 old_priority = pinfo->priority;
3659 * Are we already queued?
3661 if (pinfo->index != CAM_UNQUEUED_INDEX) {
3662 /* Simply reorder based on new priority */
3663 if (new_priority < old_priority) {
3664 camq_change_priority(queue, pinfo->index,
3666 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3667 ("changed priority to %d\n",
3672 /* New entry on the queue */
3673 if (new_priority < old_priority)
3674 pinfo->priority = new_priority;
3676 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3677 ("Inserting onto queue\n"));
3678 pinfo->generation = ++queue->generation;
3679 camq_insert(queue, pinfo);
3686 xpt_run_dev_allocq(struct cam_eb *bus)
3688 struct cam_devq *devq;
3690 if ((devq = bus->sim->devq) == NULL) {
3691 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_run_dev_allocq: NULL devq\n"));
3694 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_run_dev_allocq\n"));
3696 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3697 (" qfrozen_cnt == 0x%x, entries == %d, "
3698 "openings == %d, active == %d\n",
3699 devq->alloc_queue.qfrozen_cnt,
3700 devq->alloc_queue.entries,
3701 devq->alloc_openings,
3702 devq->alloc_active));
3704 devq->alloc_queue.qfrozen_cnt++;
3705 while ((devq->alloc_queue.entries > 0)
3706 && (devq->alloc_openings > 0)
3707 && (devq->alloc_queue.qfrozen_cnt <= 1)) {
3708 struct cam_ed_qinfo *qinfo;
3709 struct cam_ed *device;
3710 union ccb *work_ccb;
3711 struct cam_periph *drv;
3714 qinfo = (struct cam_ed_qinfo *)camq_remove(&devq->alloc_queue,
3716 device = qinfo->device;
3718 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3719 ("running device %p\n", device));
3721 drvq = &device->drvq;
3724 if (drvq->entries <= 0) {
3725 panic("xpt_run_dev_allocq: "
3726 "Device on queue without any work to do");
3729 if ((work_ccb = xpt_get_ccb(device)) != NULL) {
3730 devq->alloc_openings--;
3731 devq->alloc_active++;
3732 drv = (struct cam_periph*)camq_remove(drvq, CAMQ_HEAD);
3733 xpt_setup_ccb(&work_ccb->ccb_h, drv->path,
3734 drv->pinfo.priority);
3735 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3736 ("calling periph start\n"));
3737 drv->periph_start(drv, work_ccb);
3740 * Malloc failure in alloc_ccb
3743 * XXX add us to a list to be run from free_ccb
3744 * if we don't have any ccbs active on this
3745 * device queue otherwise we may never get run
3751 if (drvq->entries > 0) {
3752 /* We have more work. Attempt to reschedule */
3753 xpt_schedule_dev_allocq(bus, device);
3756 devq->alloc_queue.qfrozen_cnt--;
3760 xpt_run_dev_sendq(struct cam_eb *bus)
3762 struct cam_devq *devq;
3764 if ((devq = bus->sim->devq) == NULL) {
3765 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_run_dev_sendq: NULL devq\n"));
3768 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_run_dev_sendq\n"));
3770 devq->send_queue.qfrozen_cnt++;
3771 while ((devq->send_queue.entries > 0)
3772 && (devq->send_openings > 0)) {
3773 struct cam_ed_qinfo *qinfo;
3774 struct cam_ed *device;
3775 union ccb *work_ccb;
3776 struct cam_sim *sim;
3778 if (devq->send_queue.qfrozen_cnt > 1) {
3782 qinfo = (struct cam_ed_qinfo *)camq_remove(&devq->send_queue,
3784 device = qinfo->device;
3787 * If the device has been "frozen", don't attempt
3790 if (device->qfrozen_cnt > 0) {
3794 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3795 ("running device %p\n", device));
3797 work_ccb = cam_ccbq_peek_ccb(&device->ccbq, CAMQ_HEAD);
3798 if (work_ccb == NULL) {
3799 kprintf("device on run queue with no ccbs???\n");
3803 if ((work_ccb->ccb_h.flags & CAM_HIGH_POWER) != 0) {
3805 lockmgr(&xsoftc.xpt_lock, LK_EXCLUSIVE);
3806 if (xsoftc.num_highpower <= 0) {
3808 * We got a high power command, but we
3809 * don't have any available slots. Freeze
3810 * the device queue until we have a slot
3813 device->qfrozen_cnt++;
3814 STAILQ_INSERT_TAIL(&xsoftc.highpowerq,
3818 lockmgr(&xsoftc.xpt_lock, LK_RELEASE);
3822 * Consume a high power slot while
3825 xsoftc.num_highpower--;
3827 lockmgr(&xsoftc.xpt_lock, LK_RELEASE);
3829 devq->active_dev = device;
3830 cam_ccbq_remove_ccb(&device->ccbq, work_ccb);
3832 cam_ccbq_send_ccb(&device->ccbq, work_ccb);
3834 devq->send_openings--;
3835 devq->send_active++;
3837 if (device->ccbq.queue.entries > 0)
3838 xpt_schedule_dev_sendq(bus, device);
3840 if (work_ccb && (work_ccb->ccb_h.flags & CAM_DEV_QFREEZE) != 0){
3842 * The client wants to freeze the queue
3843 * after this CCB is sent.
3845 device->qfrozen_cnt++;
3848 /* In Target mode, the peripheral driver knows best... */
3849 if (work_ccb->ccb_h.func_code == XPT_SCSI_IO) {
3850 if ((device->inq_flags & SID_CmdQue) != 0
3851 && work_ccb->csio.tag_action != CAM_TAG_ACTION_NONE)
3852 work_ccb->ccb_h.flags |= CAM_TAG_ACTION_VALID;
3855 * Clear this in case of a retried CCB that
3856 * failed due to a rejected tag.
3858 work_ccb->ccb_h.flags &= ~CAM_TAG_ACTION_VALID;
3862 * Device queues can be shared among multiple sim instances
3863 * that reside on different busses. Use the SIM in the queue
3864 * CCB's path, rather than the one in the bus that was passed
3865 * into this function.
3867 sim = work_ccb->ccb_h.path->bus->sim;
3868 (*(sim->sim_action))(sim, work_ccb);
3870 devq->active_dev = NULL;
3872 devq->send_queue.qfrozen_cnt--;
3876 * This function merges stuff from the slave ccb into the master ccb, while
3877 * keeping important fields in the master ccb constant.
3880 xpt_merge_ccb(union ccb *master_ccb, union ccb *slave_ccb)
3883 * Pull fields that are valid for peripheral drivers to set
3884 * into the master CCB along with the CCB "payload".
3886 master_ccb->ccb_h.retry_count = slave_ccb->ccb_h.retry_count;
3887 master_ccb->ccb_h.func_code = slave_ccb->ccb_h.func_code;
3888 master_ccb->ccb_h.timeout = slave_ccb->ccb_h.timeout;
3889 master_ccb->ccb_h.flags = slave_ccb->ccb_h.flags;
3890 bcopy(&(&slave_ccb->ccb_h)[1], &(&master_ccb->ccb_h)[1],
3891 sizeof(union ccb) - sizeof(struct ccb_hdr));
3895 xpt_setup_ccb(struct ccb_hdr *ccb_h, struct cam_path *path, u_int32_t priority)
3897 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_setup_ccb\n"));
3898 callout_init(&ccb_h->timeout_ch);
3899 ccb_h->pinfo.priority = priority;
3901 ccb_h->path_id = path->bus->path_id;
3903 ccb_h->target_id = path->target->target_id;
3905 ccb_h->target_id = CAM_TARGET_WILDCARD;
3907 ccb_h->target_lun = path->device->lun_id;
3908 ccb_h->pinfo.generation = ++path->device->ccbq.queue.generation;
3910 ccb_h->target_lun = CAM_TARGET_WILDCARD;
3912 ccb_h->pinfo.index = CAM_UNQUEUED_INDEX;
3916 /* Path manipulation functions */
3918 xpt_create_path(struct cam_path **new_path_ptr, struct cam_periph *perph,
3919 path_id_t path_id, target_id_t target_id, lun_id_t lun_id)
3921 struct cam_path *path;
3924 path = kmalloc(sizeof(*path), M_CAMXPT, M_INTWAIT);
3925 status = xpt_compile_path(path, perph, path_id, target_id, lun_id);
3926 if (status != CAM_REQ_CMP) {
3927 kfree(path, M_CAMXPT);
3930 *new_path_ptr = path;
3935 xpt_create_path_unlocked(struct cam_path **new_path_ptr,
3936 struct cam_periph *periph, path_id_t path_id,
3937 target_id_t target_id, lun_id_t lun_id)
3939 struct cam_path *path;
3940 struct cam_eb *bus = NULL;
3942 int need_unlock = 0;
3944 path = (struct cam_path *)kmalloc(sizeof(*path), M_CAMXPT, M_WAITOK);
3946 if (path_id != CAM_BUS_WILDCARD) {
3947 bus = xpt_find_bus(path_id);
3950 CAM_SIM_LOCK(bus->sim);
3953 status = xpt_compile_path(path, periph, path_id, target_id, lun_id);
3955 CAM_SIM_UNLOCK(bus->sim);
3956 if (status != CAM_REQ_CMP) {
3957 kfree(path, M_CAMXPT);
3960 *new_path_ptr = path;
3965 xpt_compile_path(struct cam_path *new_path, struct cam_periph *perph,
3966 path_id_t path_id, target_id_t target_id, lun_id_t lun_id)
3969 struct cam_et *target;
3970 struct cam_ed *device;
3973 status = CAM_REQ_CMP; /* Completed without error */
3974 target = NULL; /* Wildcarded */
3975 device = NULL; /* Wildcarded */
3978 * We will potentially modify the EDT, so block interrupts
3979 * that may attempt to create cam paths.
3981 bus = xpt_find_bus(path_id);
3983 status = CAM_PATH_INVALID;
3985 target = xpt_find_target(bus, target_id);
3986 if (target == NULL) {
3988 struct cam_et *new_target;
3990 new_target = xpt_alloc_target(bus, target_id);
3991 if (new_target == NULL) {
3992 status = CAM_RESRC_UNAVAIL;
3994 target = new_target;
3997 if (target != NULL) {
3998 device = xpt_find_device(target, lun_id);
3999 if (device == NULL) {
4001 struct cam_ed *new_device;
4003 new_device = xpt_alloc_device(bus,
4006 if (new_device == NULL) {
4007 status = CAM_RESRC_UNAVAIL;
4009 device = new_device;
4016 * Only touch the user's data if we are successful.
4018 if (status == CAM_REQ_CMP) {
4019 new_path->periph = perph;
4020 new_path->bus = bus;
4021 new_path->target = target;
4022 new_path->device = device;
4023 CAM_DEBUG(new_path, CAM_DEBUG_TRACE, ("xpt_compile_path\n"));
4026 xpt_release_device(bus, target, device);
4028 xpt_release_target(bus, target);
4030 xpt_release_bus(bus);
4036 xpt_release_path(struct cam_path *path)
4038 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_release_path\n"));
4039 if (path->device != NULL) {
4040 xpt_release_device(path->bus, path->target, path->device);
4041 path->device = NULL;
4043 if (path->target != NULL) {
4044 xpt_release_target(path->bus, path->target);
4045 path->target = NULL;
4047 if (path->bus != NULL) {
4048 xpt_release_bus(path->bus);
4054 xpt_free_path(struct cam_path *path)
4056 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_free_path\n"));
4057 xpt_release_path(path);
4058 kfree(path, M_CAMXPT);
4063 * Return -1 for failure, 0 for exact match, 1 for match with wildcards
4064 * in path1, 2 for match with wildcards in path2.
4067 xpt_path_comp(struct cam_path *path1, struct cam_path *path2)
4071 if (path1->bus != path2->bus) {
4072 if (path1->bus->path_id == CAM_BUS_WILDCARD)
4074 else if (path2->bus->path_id == CAM_BUS_WILDCARD)
4079 if (path1->target != path2->target) {
4080 if (path1->target->target_id == CAM_TARGET_WILDCARD) {
4083 } else if (path2->target->target_id == CAM_TARGET_WILDCARD)
4088 if (path1->device != path2->device) {
4089 if (path1->device->lun_id == CAM_LUN_WILDCARD) {
4092 } else if (path2->device->lun_id == CAM_LUN_WILDCARD)
4101 xpt_print_path(struct cam_path *path)
4105 kprintf("(nopath): ");
4107 if (path->periph != NULL)
4108 kprintf("(%s%d:", path->periph->periph_name,
4109 path->periph->unit_number);
4111 kprintf("(noperiph:");
4113 if (path->bus != NULL)
4114 kprintf("%s%d:%d:", path->bus->sim->sim_name,
4115 path->bus->sim->unit_number,
4116 path->bus->sim->bus_id);
4120 if (path->target != NULL)
4121 kprintf("%d:", path->target->target_id);
4125 if (path->device != NULL)
4126 kprintf("%d): ", path->device->lun_id);
4133 xpt_print(struct cam_path *path, const char *fmt, ...)
4136 xpt_print_path(path);
4137 __va_start(ap, fmt);
4143 xpt_path_string(struct cam_path *path, char *str, size_t str_len)
4147 sim_lock_assert_owned(path->bus->sim->lock);
4149 sbuf_new(&sb, str, str_len, 0);
4152 sbuf_printf(&sb, "(nopath): ");
4154 if (path->periph != NULL)
4155 sbuf_printf(&sb, "(%s%d:", path->periph->periph_name,
4156 path->periph->unit_number);
4158 sbuf_printf(&sb, "(noperiph:");
4160 if (path->bus != NULL)
4161 sbuf_printf(&sb, "%s%d:%d:", path->bus->sim->sim_name,
4162 path->bus->sim->unit_number,
4163 path->bus->sim->bus_id);
4165 sbuf_printf(&sb, "nobus:");
4167 if (path->target != NULL)
4168 sbuf_printf(&sb, "%d:", path->target->target_id);
4170 sbuf_printf(&sb, "X:");
4172 if (path->device != NULL)
4173 sbuf_printf(&sb, "%d): ", path->device->lun_id);
4175 sbuf_printf(&sb, "X): ");
4179 return(sbuf_len(&sb));
4183 xpt_path_path_id(struct cam_path *path)
4185 sim_lock_assert_owned(path->bus->sim->lock);
4187 return(path->bus->path_id);
4191 xpt_path_target_id(struct cam_path *path)
4193 sim_lock_assert_owned(path->bus->sim->lock);
4195 if (path->target != NULL)
4196 return (path->target->target_id);
4198 return (CAM_TARGET_WILDCARD);
4202 xpt_path_lun_id(struct cam_path *path)
4204 sim_lock_assert_owned(path->bus->sim->lock);
4206 if (path->device != NULL)
4207 return (path->device->lun_id);
4209 return (CAM_LUN_WILDCARD);
4213 xpt_path_sim(struct cam_path *path)
4215 return (path->bus->sim);
4219 xpt_path_periph(struct cam_path *path)
4221 sim_lock_assert_owned(path->bus->sim->lock);
4223 return (path->periph);
4227 xpt_path_serialno(struct cam_path *path)
4229 return (path->device->serial_num);
4233 * Release a CAM control block for the caller. Remit the cost of the structure
4234 * to the device referenced by the path. If the this device had no 'credits'
4235 * and peripheral drivers have registered async callbacks for this notification
4239 xpt_release_ccb(union ccb *free_ccb)
4241 struct cam_path *path;
4242 struct cam_ed *device;
4244 struct cam_sim *sim;
4246 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_release_ccb\n"));
4247 path = free_ccb->ccb_h.path;
4248 device = path->device;
4252 sim_lock_assert_owned(sim->lock);
4254 cam_ccbq_release_opening(&device->ccbq);
4255 if (sim->ccb_count > sim->max_ccbs) {
4256 xpt_free_ccb(free_ccb);
4258 } else if (sim == &cam_dead_sim) {
4259 xpt_free_ccb(free_ccb);
4261 SLIST_INSERT_HEAD(&sim->ccb_freeq, &free_ccb->ccb_h,
4264 if (sim->devq == NULL) {
4267 sim->devq->alloc_openings++;
4268 sim->devq->alloc_active--;
4269 /* XXX Turn this into an inline function - xpt_run_device?? */
4270 if ((device_is_alloc_queued(device) == 0)
4271 && (device->drvq.entries > 0)) {
4272 xpt_schedule_dev_allocq(bus, device);
4274 if (dev_allocq_is_runnable(sim->devq))
4275 xpt_run_dev_allocq(bus);
4278 /* Functions accessed by SIM drivers */
4281 * A sim structure, listing the SIM entry points and instance
4282 * identification info is passed to xpt_bus_register to hook the SIM
4283 * into the CAM framework. xpt_bus_register creates a cam_eb entry
4284 * for this new bus and places it in the array of busses and assigns
4285 * it a path_id. The path_id may be influenced by "hard wiring"
4286 * information specified by the user. Once interrupt services are
4287 * availible, the bus will be probed.
4290 xpt_bus_register(struct cam_sim *sim, u_int32_t bus)
4292 struct cam_eb *new_bus;
4293 struct cam_eb *old_bus;
4294 struct ccb_pathinq cpi;
4296 sim_lock_assert_owned(sim->lock);
4299 new_bus = kmalloc(sizeof(*new_bus), M_CAMXPT, M_INTWAIT);
4301 if (strcmp(sim->sim_name, "xpt") != 0) {
4303 xptpathid(sim->sim_name, sim->unit_number, sim->bus_id);
4306 TAILQ_INIT(&new_bus->et_entries);
4307 new_bus->path_id = sim->path_id;
4310 timevalclear(&new_bus->last_reset);
4312 new_bus->refcount = 1; /* Held until a bus_deregister event */
4313 new_bus->generation = 0;
4314 lockmgr(&xsoftc.xpt_topo_lock, LK_EXCLUSIVE);
4315 old_bus = TAILQ_FIRST(&xsoftc.xpt_busses);
4316 while (old_bus != NULL
4317 && old_bus->path_id < new_bus->path_id)
4318 old_bus = TAILQ_NEXT(old_bus, links);
4319 if (old_bus != NULL)
4320 TAILQ_INSERT_BEFORE(old_bus, new_bus, links);
4322 TAILQ_INSERT_TAIL(&xsoftc.xpt_busses, new_bus, links);
4323 xsoftc.bus_generation++;
4324 lockmgr(&xsoftc.xpt_topo_lock, LK_RELEASE);
4326 /* Notify interested parties */
4327 if (sim->path_id != CAM_XPT_PATH_ID) {
4328 struct cam_path path;
4330 xpt_compile_path(&path, /*periph*/NULL, sim->path_id,
4331 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
4332 xpt_setup_ccb(&cpi.ccb_h, &path, /*priority*/1);
4333 cpi.ccb_h.func_code = XPT_PATH_INQ;
4334 xpt_action((union ccb *)&cpi);
4335 xpt_async(AC_PATH_REGISTERED, &path, &cpi);
4336 xpt_release_path(&path);
4338 return (CAM_SUCCESS);
4342 * Deregister a bus. We must clean out all transactions pending on the bus.
4343 * This routine is typically called prior to cam_sim_free() (e.g. see
4344 * dev/usbmisc/umass/umass.c)
4347 xpt_bus_deregister(path_id_t pathid)
4349 struct cam_path bus_path;
4350 struct cam_et *target;
4351 struct cam_ed *device;
4352 struct cam_ed_qinfo *qinfo;
4353 struct cam_devq *devq;
4354 struct cam_periph *periph;
4355 struct cam_sim *ccbsim;
4356 union ccb *work_ccb;
4360 status = xpt_compile_path(&bus_path, NULL, pathid,
4361 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
4362 if (status != CAM_REQ_CMP)
4366 * This should clear out all pending requests and timeouts, but
4367 * the ccb's may be queued to a software interrupt.
4369 * XXX AC_LOST_DEVICE does not precisely abort the pending requests,
4370 * and it really ought to.
4372 xpt_async(AC_LOST_DEVICE, &bus_path, NULL);
4373 xpt_async(AC_PATH_DEREGISTERED, &bus_path, NULL);
4376 * Mark the SIM as having been deregistered. This prevents
4377 * certain operations from re-queueing to it, stops new devices
4378 * from being added, etc.
4380 devq = bus_path.bus->sim->devq;
4381 ccbsim = bus_path.bus->sim;
4382 ccbsim->flags |= CAM_SIM_DEREGISTERED;
4386 * Execute any pending operations now.
4388 while ((qinfo = (struct cam_ed_qinfo *)camq_remove(&devq->send_queue,
4389 CAMQ_HEAD)) != NULL ||
4390 (qinfo = (struct cam_ed_qinfo *)camq_remove(&devq->alloc_queue,
4391 CAMQ_HEAD)) != NULL) {
4393 device = qinfo->device;
4394 work_ccb = cam_ccbq_peek_ccb(&device->ccbq, CAMQ_HEAD);
4395 if (work_ccb != NULL) {
4396 devq->active_dev = device;
4397 cam_ccbq_remove_ccb(&device->ccbq, work_ccb);
4398 cam_ccbq_send_ccb(&device->ccbq, work_ccb);
4399 (*(ccbsim->sim_action))(ccbsim, work_ccb);
4402 periph = (struct cam_periph *)camq_remove(&device->drvq,
4405 xpt_schedule(periph, periph->pinfo.priority);
4406 } while (work_ccb != NULL || periph != NULL);
4410 * Make sure all completed CCBs are processed.
4412 while (!TAILQ_EMPTY(&ccbsim->sim_doneq)) {
4413 camisr_runqueue(ccbsim);
4417 * Check for requeues, reissues asyncs if necessary
4419 if (CAMQ_GET_HEAD(&devq->send_queue))
4420 kprintf("camq: devq send_queue still in use (%d entries)\n",
4421 devq->send_queue.entries);
4422 if (CAMQ_GET_HEAD(&devq->alloc_queue))
4423 kprintf("camq: devq alloc_queue still in use (%d entries)\n",
4424 devq->alloc_queue.entries);
4425 if (CAMQ_GET_HEAD(&devq->send_queue) ||
4426 CAMQ_GET_HEAD(&devq->alloc_queue)) {
4427 if (++retries < 5) {
4428 xpt_async(AC_LOST_DEVICE, &bus_path, NULL);
4429 xpt_async(AC_PATH_DEREGISTERED, &bus_path, NULL);
4435 * Retarget the bus and all cached sim pointers to dead_sim.
4437 * Various CAM subsystems may be holding on to targets, devices,
4438 * and/or peripherals and may attempt to use the sim pointer cached
4439 * in some of these structures during close.
4441 bus_path.bus->sim = &cam_dead_sim;
4442 TAILQ_FOREACH(target, &bus_path.bus->et_entries, links) {
4443 TAILQ_FOREACH(device, &target->ed_entries, links) {
4444 device->sim = &cam_dead_sim;
4445 SLIST_FOREACH(periph, &device->periphs, periph_links) {
4446 periph->sim = &cam_dead_sim;
4452 * Repeat the async's for the benefit of any new devices, such as
4453 * might be created from completed probes. Any new device
4454 * ops will run on dead_sim.
4456 * XXX There are probably races :-(
4458 CAM_SIM_LOCK(&cam_dead_sim);
4459 xpt_async(AC_LOST_DEVICE, &bus_path, NULL);
4460 xpt_async(AC_PATH_DEREGISTERED, &bus_path, NULL);
4461 CAM_SIM_UNLOCK(&cam_dead_sim);
4463 /* Release the reference count held while registered. */
4464 xpt_release_bus(bus_path.bus);
4465 xpt_release_path(&bus_path);
4467 /* Release the ref we got when the bus was registered */
4468 cam_sim_release(ccbsim, 0);
4470 return (CAM_REQ_CMP);
4474 xptnextfreepathid(void)
4481 lockmgr(&xsoftc.xpt_topo_lock, LK_EXCLUSIVE);
4482 bus = TAILQ_FIRST(&xsoftc.xpt_busses);
4484 /* Find an unoccupied pathid */
4485 while (bus != NULL && bus->path_id <= pathid) {
4486 if (bus->path_id == pathid)
4488 bus = TAILQ_NEXT(bus, links);
4490 lockmgr(&xsoftc.xpt_topo_lock, LK_RELEASE);
4493 * Ensure that this pathid is not reserved for
4494 * a bus that may be registered in the future.
4496 if (resource_string_value("scbus", pathid, "at", &strval) == 0) {
4498 /* Start the search over */
4499 lockmgr(&xsoftc.xpt_topo_lock, LK_EXCLUSIVE);
4506 xptpathid(const char *sim_name, int sim_unit, int sim_bus)
4512 pathid = CAM_XPT_PATH_ID;
4513 ksnprintf(buf, sizeof(buf), "%s%d", sim_name, sim_unit);
4515 while ((i = resource_query_string(i, "at", buf)) != -1) {
4516 if (strcmp(resource_query_name(i), "scbus")) {
4517 /* Avoid a bit of foot shooting. */
4520 dunit = resource_query_unit(i);
4521 if (dunit < 0) /* unwired?! */
4523 if (resource_int_value("scbus", dunit, "bus", &val) == 0) {
4524 if (sim_bus == val) {
4528 } else if (sim_bus == 0) {
4529 /* Unspecified matches bus 0 */
4533 kprintf("Ambiguous scbus configuration for %s%d "
4534 "bus %d, cannot wire down. The kernel "
4535 "config entry for scbus%d should "
4536 "specify a controller bus.\n"
4537 "Scbus will be assigned dynamically.\n",
4538 sim_name, sim_unit, sim_bus, dunit);
4543 if (pathid == CAM_XPT_PATH_ID)
4544 pathid = xptnextfreepathid();
4549 xpt_async(u_int32_t async_code, struct cam_path *path, void *async_arg)
4552 struct cam_et *target, *next_target;
4553 struct cam_ed *device, *next_device;
4555 sim_lock_assert_owned(path->bus->sim->lock);
4557 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_async\n"));
4560 * Most async events come from a CAM interrupt context. In
4561 * a few cases, the error recovery code at the peripheral layer,
4562 * which may run from our SWI or a process context, may signal
4563 * deferred events with a call to xpt_async.
4568 if (async_code == AC_BUS_RESET) {
4569 /* Update our notion of when the last reset occurred */
4570 microuptime(&bus->last_reset);
4573 for (target = TAILQ_FIRST(&bus->et_entries);
4575 target = next_target) {
4577 next_target = TAILQ_NEXT(target, links);
4579 if (path->target != target
4580 && path->target->target_id != CAM_TARGET_WILDCARD
4581 && target->target_id != CAM_TARGET_WILDCARD)
4584 if (async_code == AC_SENT_BDR) {
4585 /* Update our notion of when the last reset occurred */
4586 microuptime(&path->target->last_reset);
4589 for (device = TAILQ_FIRST(&target->ed_entries);
4591 device = next_device) {
4593 next_device = TAILQ_NEXT(device, links);
4595 if (path->device != device
4596 && path->device->lun_id != CAM_LUN_WILDCARD
4597 && device->lun_id != CAM_LUN_WILDCARD)
4600 xpt_dev_async(async_code, bus, target,
4603 xpt_async_bcast(&device->asyncs, async_code,
4609 * If this wasn't a fully wildcarded async, tell all
4610 * clients that want all async events.
4612 if (bus != xpt_periph->path->bus)
4613 xpt_async_bcast(&xpt_periph->path->device->asyncs, async_code,
4618 xpt_async_bcast(struct async_list *async_head,
4619 u_int32_t async_code,
4620 struct cam_path *path, void *async_arg)
4622 struct async_node *cur_entry;
4624 cur_entry = SLIST_FIRST(async_head);
4625 while (cur_entry != NULL) {
4626 struct async_node *next_entry;
4628 * Grab the next list entry before we call the current
4629 * entry's callback. This is because the callback function
4630 * can delete its async callback entry.
4632 next_entry = SLIST_NEXT(cur_entry, links);
4633 if ((cur_entry->event_enable & async_code) != 0)
4634 cur_entry->callback(cur_entry->callback_arg,
4637 cur_entry = next_entry;
4642 * Handle any per-device event notifications that require action by the XPT.
4645 xpt_dev_async(u_int32_t async_code, struct cam_eb *bus, struct cam_et *target,
4646 struct cam_ed *device, void *async_arg)
4649 struct cam_path newpath;
4652 * We only need to handle events for real devices.
4654 if (target->target_id == CAM_TARGET_WILDCARD
4655 || device->lun_id == CAM_LUN_WILDCARD)
4659 * We need our own path with wildcards expanded to
4660 * handle certain types of events.
4662 if ((async_code == AC_SENT_BDR)
4663 || (async_code == AC_BUS_RESET)
4664 || (async_code == AC_INQ_CHANGED))
4665 status = xpt_compile_path(&newpath, NULL,
4670 status = CAM_REQ_CMP_ERR;
4672 if (status == CAM_REQ_CMP) {
4675 * Allow transfer negotiation to occur in a
4676 * tag free environment.
4678 if (async_code == AC_SENT_BDR
4679 || async_code == AC_BUS_RESET)
4680 xpt_toggle_tags(&newpath);
4682 if (async_code == AC_INQ_CHANGED) {
4684 * We've sent a start unit command, or
4685 * something similar to a device that
4686 * may have caused its inquiry data to
4687 * change. So we re-scan the device to
4688 * refresh the inquiry data for it.
4690 xpt_scan_lun(newpath.periph, &newpath,
4691 CAM_EXPECT_INQ_CHANGE, NULL);
4693 xpt_release_path(&newpath);
4694 } else if (async_code == AC_LOST_DEVICE) {
4696 * When we lose a device the device may be about to detach
4697 * the sim, we have to clear out all pending timeouts and
4698 * requests before that happens. XXX it would be nice if
4699 * we could abort the requests pertaining to the device.
4701 xpt_release_devq_timeout(device);
4702 if ((device->flags & CAM_DEV_UNCONFIGURED) == 0) {
4703 device->flags |= CAM_DEV_UNCONFIGURED;
4704 xpt_release_device(bus, target, device);
4706 } else if (async_code == AC_TRANSFER_NEG) {
4707 struct ccb_trans_settings *settings;
4709 settings = (struct ccb_trans_settings *)async_arg;
4710 xpt_set_transfer_settings(settings, device,
4711 /*async_update*/TRUE);
4716 xpt_freeze_devq(struct cam_path *path, u_int count)
4718 struct ccb_hdr *ccbh;
4720 sim_lock_assert_owned(path->bus->sim->lock);
4722 path->device->qfrozen_cnt += count;
4725 * Mark the last CCB in the queue as needing
4726 * to be requeued if the driver hasn't
4727 * changed it's state yet. This fixes a race
4728 * where a ccb is just about to be queued to
4729 * a controller driver when it's interrupt routine
4730 * freezes the queue. To completly close the
4731 * hole, controller drives must check to see
4732 * if a ccb's status is still CAM_REQ_INPROG
4733 * just before they queue
4734 * the CCB. See ahc_action/ahc_freeze_devq for
4737 ccbh = TAILQ_LAST(&path->device->ccbq.active_ccbs, ccb_hdr_tailq);
4738 if (ccbh && ccbh->status == CAM_REQ_INPROG)
4739 ccbh->status = CAM_REQUEUE_REQ;
4740 return (path->device->qfrozen_cnt);
4744 xpt_freeze_simq(struct cam_sim *sim, u_int count)
4746 sim_lock_assert_owned(sim->lock);
4748 if (sim->devq == NULL)
4750 sim->devq->send_queue.qfrozen_cnt += count;
4751 if (sim->devq->active_dev != NULL) {
4752 struct ccb_hdr *ccbh;
4754 ccbh = TAILQ_LAST(&sim->devq->active_dev->ccbq.active_ccbs,
4756 if (ccbh && ccbh->status == CAM_REQ_INPROG)
4757 ccbh->status = CAM_REQUEUE_REQ;
4759 return (sim->devq->send_queue.qfrozen_cnt);
4763 * WARNING: most devices, especially USB/UMASS, may detach their sim early.
4764 * We ref-count the sim (and the bus only NULLs it out when the bus has been
4765 * freed, which is not the case here), but the device queue is also freed XXX
4766 * and we have to check that here.
4768 * XXX fixme: could we simply not null-out the device queue via
4772 xpt_release_devq_timeout(void *arg)
4774 struct cam_ed *device;
4776 device = (struct cam_ed *)arg;
4778 xpt_release_devq_device(device, /*count*/1, /*run_queue*/TRUE);
4782 xpt_release_devq(struct cam_path *path, u_int count, int run_queue)
4784 sim_lock_assert_owned(path->bus->sim->lock);
4786 xpt_release_devq_device(path->device, count, run_queue);
4790 xpt_release_devq_device(struct cam_ed *dev, u_int count, int run_queue)
4796 if (dev->qfrozen_cnt > 0) {
4798 count = (count > dev->qfrozen_cnt) ? dev->qfrozen_cnt : count;
4799 dev->qfrozen_cnt -= count;
4800 if (dev->qfrozen_cnt == 0) {
4803 * No longer need to wait for a successful
4804 * command completion.
4806 dev->flags &= ~CAM_DEV_REL_ON_COMPLETE;
4809 * Remove any timeouts that might be scheduled
4810 * to release this queue.
4812 if ((dev->flags & CAM_DEV_REL_TIMEOUT_PENDING) != 0) {
4813 callout_stop(&dev->callout);
4814 dev->flags &= ~CAM_DEV_REL_TIMEOUT_PENDING;
4818 * Now that we are unfrozen schedule the
4819 * device so any pending transactions are
4822 if ((dev->ccbq.queue.entries > 0)
4823 && (xpt_schedule_dev_sendq(dev->target->bus, dev))
4824 && (run_queue != 0)) {
4830 xpt_run_dev_sendq(dev->target->bus);
4834 xpt_release_simq(struct cam_sim *sim, int run_queue)
4838 sim_lock_assert_owned(sim->lock);
4840 if (sim->devq == NULL)
4843 sendq = &(sim->devq->send_queue);
4844 if (sendq->qfrozen_cnt > 0) {
4845 sendq->qfrozen_cnt--;
4846 if (sendq->qfrozen_cnt == 0) {
4850 * If there is a timeout scheduled to release this
4851 * sim queue, remove it. The queue frozen count is
4854 if ((sim->flags & CAM_SIM_REL_TIMEOUT_PENDING) != 0){
4855 callout_stop(&sim->callout);
4856 sim->flags &= ~CAM_SIM_REL_TIMEOUT_PENDING;
4858 bus = xpt_find_bus(sim->path_id);
4862 * Now that we are unfrozen run the send queue.
4864 xpt_run_dev_sendq(bus);
4866 xpt_release_bus(bus);
4872 xpt_done(union ccb *done_ccb)
4874 struct cam_sim *sim;
4876 CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("xpt_done\n"));
4877 if ((done_ccb->ccb_h.func_code & XPT_FC_QUEUED) != 0) {
4879 * Queue up the request for handling by our SWI handler
4880 * any of the "non-immediate" type of ccbs.
4882 sim = done_ccb->ccb_h.path->bus->sim;
4883 switch (done_ccb->ccb_h.path->periph->type) {
4884 case CAM_PERIPH_BIO:
4885 spin_lock(&sim->sim_spin);
4886 TAILQ_INSERT_TAIL(&sim->sim_doneq, &done_ccb->ccb_h,
4888 done_ccb->ccb_h.pinfo.index = CAM_DONEQ_INDEX;
4889 spin_unlock(&sim->sim_spin);
4890 if ((sim->flags & CAM_SIM_ON_DONEQ) == 0) {
4891 spin_lock(&cam_simq_spin);
4892 if ((sim->flags & CAM_SIM_ON_DONEQ) == 0) {
4893 TAILQ_INSERT_TAIL(&cam_simq, sim,
4895 sim->flags |= CAM_SIM_ON_DONEQ;
4897 spin_unlock(&cam_simq_spin);
4899 if ((done_ccb->ccb_h.flags & CAM_POLLED) == 0)
4903 panic("unknown periph type %d",
4904 done_ccb->ccb_h.path->periph->type);
4914 new_ccb = kmalloc(sizeof(*new_ccb), M_CAMXPT, M_INTWAIT | M_ZERO);
4919 xpt_free_ccb(union ccb *free_ccb)
4921 kfree(free_ccb, M_CAMXPT);
4926 /* Private XPT functions */
4929 * Get a CAM control block for the caller. Charge the structure to the device
4930 * referenced by the path. If the this device has no 'credits' then the
4931 * device already has the maximum number of outstanding operations under way
4932 * and we return NULL. If we don't have sufficient resources to allocate more
4933 * ccbs, we also return NULL.
4936 xpt_get_ccb(struct cam_ed *device)
4939 struct cam_sim *sim;
4942 if ((new_ccb = (union ccb *)SLIST_FIRST(&sim->ccb_freeq)) == NULL) {
4943 new_ccb = xpt_alloc_ccb();
4944 if ((sim->flags & CAM_SIM_MPSAFE) == 0)
4945 callout_init(&new_ccb->ccb_h.timeout_ch);
4946 SLIST_INSERT_HEAD(&sim->ccb_freeq, &new_ccb->ccb_h,
4950 cam_ccbq_take_opening(&device->ccbq);
4951 SLIST_REMOVE_HEAD(&sim->ccb_freeq, xpt_links.sle);
4956 xpt_release_bus(struct cam_eb *bus)
4959 if ((--bus->refcount == 0)
4960 && (TAILQ_FIRST(&bus->et_entries) == NULL)) {
4961 lockmgr(&xsoftc.xpt_topo_lock, LK_EXCLUSIVE);
4962 TAILQ_REMOVE(&xsoftc.xpt_busses, bus, links);
4963 xsoftc.bus_generation++;
4964 lockmgr(&xsoftc.xpt_topo_lock, LK_RELEASE);
4965 kfree(bus, M_CAMXPT);
4969 static struct cam_et *
4970 xpt_alloc_target(struct cam_eb *bus, target_id_t target_id)
4972 struct cam_et *target;
4973 struct cam_et *cur_target;
4975 target = kmalloc(sizeof(*target), M_CAMXPT, M_INTWAIT);
4977 TAILQ_INIT(&target->ed_entries);
4979 target->target_id = target_id;
4980 target->refcount = 1;
4981 target->generation = 0;
4982 timevalclear(&target->last_reset);
4984 * Hold a reference to our parent bus so it
4985 * will not go away before we do.
4989 /* Insertion sort into our bus's target list */
4990 cur_target = TAILQ_FIRST(&bus->et_entries);
4991 while (cur_target != NULL && cur_target->target_id < target_id)
4992 cur_target = TAILQ_NEXT(cur_target, links);
4994 if (cur_target != NULL) {
4995 TAILQ_INSERT_BEFORE(cur_target, target, links);
4997 TAILQ_INSERT_TAIL(&bus->et_entries, target, links);
5004 xpt_release_target(struct cam_eb *bus, struct cam_et *target)
5006 if (target->refcount == 1) {
5007 KKASSERT(TAILQ_FIRST(&target->ed_entries) == NULL);
5008 TAILQ_REMOVE(&bus->et_entries, target, links);
5010 xpt_release_bus(bus);
5011 KKASSERT(target->refcount == 1);
5012 kfree(target, M_CAMXPT);
5018 static struct cam_ed *
5019 xpt_alloc_device(struct cam_eb *bus, struct cam_et *target, lun_id_t lun_id)
5021 struct cam_path path;
5022 struct cam_ed *device;
5023 struct cam_devq *devq;
5027 * Disallow new devices while trying to deregister a sim
5029 if (bus->sim->flags & CAM_SIM_DEREGISTERED)
5033 * Make space for us in the device queue on our bus
5035 devq = bus->sim->devq;
5038 status = cam_devq_resize(devq, devq->alloc_queue.array_size + 1);
5040 if (status != CAM_REQ_CMP) {
5043 device = kmalloc(sizeof(*device), M_CAMXPT, M_INTWAIT);
5046 if (device != NULL) {
5047 struct cam_ed *cur_device;
5049 cam_init_pinfo(&device->alloc_ccb_entry.pinfo);
5050 device->alloc_ccb_entry.device = device;
5051 cam_init_pinfo(&device->send_ccb_entry.pinfo);
5052 device->send_ccb_entry.device = device;
5053 device->target = target;
5054 device->lun_id = lun_id;
5055 device->sim = bus->sim;
5056 /* Initialize our queues */
5057 if (camq_init(&device->drvq, 0) != 0) {
5058 kfree(device, M_CAMXPT);
5061 if (cam_ccbq_init(&device->ccbq,
5062 bus->sim->max_dev_openings) != 0) {
5063 camq_fini(&device->drvq);
5064 kfree(device, M_CAMXPT);
5067 SLIST_INIT(&device->asyncs);
5068 SLIST_INIT(&device->periphs);
5069 device->generation = 0;
5070 device->owner = NULL;
5072 * Take the default quirk entry until we have inquiry
5073 * data and can determine a better quirk to use.
5075 device->quirk = &xpt_quirk_table[xpt_quirk_table_size - 1];
5076 bzero(&device->inq_data, sizeof(device->inq_data));
5077 device->inq_flags = 0;
5078 device->queue_flags = 0;
5079 device->serial_num = NULL;
5080 device->serial_num_len = 0;
5081 device->qfrozen_cnt = 0;
5082 device->flags = CAM_DEV_UNCONFIGURED;
5083 device->tag_delay_count = 0;
5084 device->tag_saved_openings = 0;
5085 device->refcount = 1;
5086 callout_init(&device->callout);
5089 * Hold a reference to our parent target so it
5090 * will not go away before we do.
5095 * XXX should be limited by number of CCBs this bus can
5098 bus->sim->max_ccbs += device->ccbq.devq_openings;
5099 /* Insertion sort into our target's device list */
5100 cur_device = TAILQ_FIRST(&target->ed_entries);
5101 while (cur_device != NULL && cur_device->lun_id < lun_id)
5102 cur_device = TAILQ_NEXT(cur_device, links);
5103 if (cur_device != NULL) {
5104 TAILQ_INSERT_BEFORE(cur_device, device, links);
5106 TAILQ_INSERT_TAIL(&target->ed_entries, device, links);
5108 target->generation++;
5109 if (lun_id != CAM_LUN_WILDCARD) {
5110 xpt_compile_path(&path,
5115 xpt_devise_transport(&path);
5116 xpt_release_path(&path);
5123 xpt_reference_device(struct cam_ed *device)
5129 xpt_release_device(struct cam_eb *bus, struct cam_et *target,
5130 struct cam_ed *device)
5132 struct cam_devq *devq;
5134 if (device->refcount == 1) {
5135 KKASSERT(device->flags & CAM_DEV_UNCONFIGURED);
5137 if (device->alloc_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX
5138 || device->send_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX)
5139 panic("Removing device while still queued for ccbs");
5141 if ((device->flags & CAM_DEV_REL_TIMEOUT_PENDING) != 0) {
5142 device->flags &= ~CAM_DEV_REL_TIMEOUT_PENDING;
5143 callout_stop(&device->callout);
5146 TAILQ_REMOVE(&target->ed_entries, device,links);
5147 target->generation++;
5148 bus->sim->max_ccbs -= device->ccbq.devq_openings;
5149 if ((devq = bus->sim->devq) != NULL) {
5150 /* Release our slot in the devq */
5151 cam_devq_resize(devq, devq->alloc_queue.array_size - 1);
5153 camq_fini(&device->drvq);
5154 camq_fini(&device->ccbq.queue);
5155 xpt_release_target(bus, target);
5156 KKASSERT(device->refcount == 1);
5157 kfree(device, M_CAMXPT);
5164 xpt_dev_ccbq_resize(struct cam_path *path, int newopenings)
5172 diff = newopenings - (dev->ccbq.dev_active + dev->ccbq.dev_openings);
5173 result = cam_ccbq_resize(&dev->ccbq, newopenings);
5174 if (result == CAM_REQ_CMP && (diff < 0)) {
5175 dev->flags |= CAM_DEV_RESIZE_QUEUE_NEEDED;
5177 if ((dev->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
5178 || (dev->inq_flags & SID_CmdQue) != 0)
5179 dev->tag_saved_openings = newopenings;
5180 /* Adjust the global limit */
5181 dev->sim->max_ccbs += diff;
5185 static struct cam_eb *
5186 xpt_find_bus(path_id_t path_id)
5190 lockmgr(&xsoftc.xpt_topo_lock, LK_EXCLUSIVE);
5191 TAILQ_FOREACH(bus, &xsoftc.xpt_busses, links) {
5192 if (bus->path_id == path_id) {
5197 lockmgr(&xsoftc.xpt_topo_lock, LK_RELEASE);
5201 static struct cam_et *
5202 xpt_find_target(struct cam_eb *bus, target_id_t target_id)
5204 struct cam_et *target;
5206 TAILQ_FOREACH(target, &bus->et_entries, links) {
5207 if (target->target_id == target_id) {
5215 static struct cam_ed *
5216 xpt_find_device(struct cam_et *target, lun_id_t lun_id)
5218 struct cam_ed *device;
5220 TAILQ_FOREACH(device, &target->ed_entries, links) {
5221 if (device->lun_id == lun_id) {
5230 union ccb *request_ccb;
5231 struct ccb_pathinq *cpi;
5233 } xpt_scan_bus_info;
5236 * To start a scan, request_ccb is an XPT_SCAN_BUS ccb.
5237 * As the scan progresses, xpt_scan_bus is used as the
5238 * callback on completion function.
5241 xpt_scan_bus(struct cam_periph *periph, union ccb *request_ccb)
5243 CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE,
5244 ("xpt_scan_bus\n"));
5245 switch (request_ccb->ccb_h.func_code) {
5248 xpt_scan_bus_info *scan_info;
5249 union ccb *work_ccb;
5250 struct cam_path *path;
5255 /* Find out the characteristics of the bus */
5256 work_ccb = xpt_alloc_ccb();
5257 xpt_setup_ccb(&work_ccb->ccb_h, request_ccb->ccb_h.path,
5258 request_ccb->ccb_h.pinfo.priority);
5259 work_ccb->ccb_h.func_code = XPT_PATH_INQ;
5260 xpt_action(work_ccb);
5261 if (work_ccb->ccb_h.status != CAM_REQ_CMP) {
5262 request_ccb->ccb_h.status = work_ccb->ccb_h.status;
5263 xpt_free_ccb(work_ccb);
5264 xpt_done(request_ccb);
5268 if ((work_ccb->cpi.hba_misc & PIM_NOINITIATOR) != 0) {
5270 * Can't scan the bus on an adapter that
5271 * cannot perform the initiator role.
5273 request_ccb->ccb_h.status = CAM_REQ_CMP;
5274 xpt_free_ccb(work_ccb);
5275 xpt_done(request_ccb);
5279 /* Save some state for use while we probe for devices */
5280 scan_info = (xpt_scan_bus_info *)
5281 kmalloc(sizeof(xpt_scan_bus_info), M_CAMXPT, M_INTWAIT);
5282 scan_info->request_ccb = request_ccb;
5283 scan_info->cpi = &work_ccb->cpi;
5285 /* Cache on our stack so we can work asynchronously */
5286 max_target = scan_info->cpi->max_target;
5287 initiator_id = scan_info->cpi->initiator_id;
5291 * We can scan all targets in parallel, or do it sequentially.
5293 if (scan_info->cpi->hba_misc & PIM_SEQSCAN) {
5295 scan_info->counter = 0;
5297 scan_info->counter = scan_info->cpi->max_target + 1;
5298 if (scan_info->cpi->initiator_id < scan_info->counter) {
5299 scan_info->counter--;
5303 for (i = 0; i <= max_target; i++) {
5305 if (i == initiator_id)
5308 status = xpt_create_path(&path, xpt_periph,
5309 request_ccb->ccb_h.path_id,
5311 if (status != CAM_REQ_CMP) {
5312 kprintf("xpt_scan_bus: xpt_create_path failed"
5313 " with status %#x, bus scan halted\n",
5315 kfree(scan_info, M_CAMXPT);
5316 request_ccb->ccb_h.status = status;
5317 xpt_free_ccb(work_ccb);
5318 xpt_done(request_ccb);
5321 work_ccb = xpt_alloc_ccb();
5322 xpt_setup_ccb(&work_ccb->ccb_h, path,
5323 request_ccb->ccb_h.pinfo.priority);
5324 work_ccb->ccb_h.func_code = XPT_SCAN_LUN;
5325 work_ccb->ccb_h.cbfcnp = xpt_scan_bus;
5326 work_ccb->ccb_h.ppriv_ptr0 = scan_info;
5327 work_ccb->crcn.flags = request_ccb->crcn.flags;
5328 xpt_action(work_ccb);
5335 struct cam_path *path;
5336 xpt_scan_bus_info *scan_info;
5338 target_id_t target_id;
5341 /* Reuse the same CCB to query if a device was really found */
5342 scan_info = (xpt_scan_bus_info *)request_ccb->ccb_h.ppriv_ptr0;
5343 xpt_setup_ccb(&request_ccb->ccb_h, request_ccb->ccb_h.path,
5344 request_ccb->ccb_h.pinfo.priority);
5345 request_ccb->ccb_h.func_code = XPT_GDEV_TYPE;
5347 path_id = request_ccb->ccb_h.path_id;
5348 target_id = request_ccb->ccb_h.target_id;
5349 lun_id = request_ccb->ccb_h.target_lun;
5350 xpt_action(request_ccb);
5352 if (request_ccb->ccb_h.status != CAM_REQ_CMP) {
5353 struct cam_ed *device;
5354 struct cam_et *target;
5358 * If we already probed lun 0 successfully, or
5359 * we have additional configured luns on this
5360 * target that might have "gone away", go onto
5363 target = request_ccb->ccb_h.path->target;
5365 * We may touch devices that we don't
5366 * hold references too, so ensure they
5367 * don't disappear out from under us.
5368 * The target above is referenced by the
5369 * path in the request ccb.
5372 device = TAILQ_FIRST(&target->ed_entries);
5373 if (device != NULL) {
5374 phl = CAN_SRCH_HI_SPARSE(device);
5375 if (device->lun_id == 0)
5376 device = TAILQ_NEXT(device, links);
5378 if ((lun_id != 0) || (device != NULL)) {
5379 if (lun_id < (CAM_SCSI2_MAXLUN-1) || phl)
5383 struct cam_ed *device;
5385 device = request_ccb->ccb_h.path->device;
5387 if ((device->quirk->quirks & CAM_QUIRK_NOLUNS) == 0) {
5388 /* Try the next lun */
5389 if (lun_id < (CAM_SCSI2_MAXLUN-1)
5390 || CAN_SRCH_HI_DENSE(device))
5396 * Free the current request path- we're done with it.
5398 xpt_free_path(request_ccb->ccb_h.path);
5401 * Check to see if we scan any further luns.
5403 if (lun_id == request_ccb->ccb_h.target_lun
5404 || lun_id > scan_info->cpi->max_lun) {
5409 if (scan_info->cpi->hba_misc & PIM_SEQSCAN) {
5410 scan_info->counter++;
5411 if (scan_info->counter ==
5412 scan_info->cpi->initiator_id) {
5413 scan_info->counter++;
5415 if (scan_info->counter >=
5416 scan_info->cpi->max_target+1) {
5420 scan_info->counter--;
5421 if (scan_info->counter == 0) {
5426 xpt_free_ccb(request_ccb);
5427 xpt_free_ccb((union ccb *)scan_info->cpi);
5428 request_ccb = scan_info->request_ccb;
5429 kfree(scan_info, M_CAMXPT);
5430 request_ccb->ccb_h.status = CAM_REQ_CMP;
5431 xpt_done(request_ccb);
5435 if ((scan_info->cpi->hba_misc & PIM_SEQSCAN) == 0) {
5438 status = xpt_create_path(&path, xpt_periph,
5439 scan_info->request_ccb->ccb_h.path_id,
5440 scan_info->counter, 0);
5441 if (status != CAM_REQ_CMP) {
5442 kprintf("xpt_scan_bus: xpt_create_path failed"
5443 " with status %#x, bus scan halted\n",
5445 xpt_free_ccb(request_ccb);
5446 xpt_free_ccb((union ccb *)scan_info->cpi);
5447 request_ccb = scan_info->request_ccb;
5448 kfree(scan_info, M_CAMXPT);
5449 request_ccb->ccb_h.status = status;
5450 xpt_done(request_ccb);
5453 xpt_setup_ccb(&request_ccb->ccb_h, path,
5454 request_ccb->ccb_h.pinfo.priority);
5455 request_ccb->ccb_h.func_code = XPT_SCAN_LUN;
5456 request_ccb->ccb_h.cbfcnp = xpt_scan_bus;
5457 request_ccb->ccb_h.ppriv_ptr0 = scan_info;
5458 request_ccb->crcn.flags =
5459 scan_info->request_ccb->crcn.flags;
5461 status = xpt_create_path(&path, xpt_periph,
5462 path_id, target_id, lun_id);
5463 if (status != CAM_REQ_CMP) {
5464 kprintf("xpt_scan_bus: xpt_create_path failed "
5465 "with status %#x, halting LUN scan\n",
5469 xpt_setup_ccb(&request_ccb->ccb_h, path,
5470 request_ccb->ccb_h.pinfo.priority);
5471 request_ccb->ccb_h.func_code = XPT_SCAN_LUN;
5472 request_ccb->ccb_h.cbfcnp = xpt_scan_bus;
5473 request_ccb->ccb_h.ppriv_ptr0 = scan_info;
5474 request_ccb->crcn.flags =
5475 scan_info->request_ccb->crcn.flags;
5477 xpt_action(request_ccb);
5487 PROBE_INQUIRY, /* this counts as DV0 for Basic Domain Validation */
5492 PROBE_TUR_FOR_NEGOTIATION,
5493 PROBE_INQUIRY_BASIC_DV1,
5494 PROBE_INQUIRY_BASIC_DV2,
5499 PROBE_INQUIRY_CKSUM = 0x01,
5500 PROBE_SERIAL_CKSUM = 0x02,
5501 PROBE_NO_ANNOUNCE = 0x04
5505 TAILQ_HEAD(, ccb_hdr) request_ccbs;
5506 probe_action action;
5507 union ccb saved_ccb;
5510 u_int8_t digest[16];
5514 xpt_scan_lun(struct cam_periph *periph, struct cam_path *path,
5515 cam_flags flags, union ccb *request_ccb)
5517 struct ccb_pathinq cpi;
5519 struct cam_path *new_path;
5520 struct cam_periph *old_periph;
5522 CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE,
5523 ("xpt_scan_lun\n"));
5525 xpt_setup_ccb(&cpi.ccb_h, path, /*priority*/1);
5526 cpi.ccb_h.func_code = XPT_PATH_INQ;
5527 xpt_action((union ccb *)&cpi);
5529 if (cpi.ccb_h.status != CAM_REQ_CMP) {
5530 if (request_ccb != NULL) {
5531 request_ccb->ccb_h.status = cpi.ccb_h.status;
5532 xpt_done(request_ccb);
5537 if ((cpi.hba_misc & PIM_NOINITIATOR) != 0) {
5539 * Can't scan the bus on an adapter that
5540 * cannot perform the initiator role.
5542 if (request_ccb != NULL) {
5543 request_ccb->ccb_h.status = CAM_REQ_CMP;
5544 xpt_done(request_ccb);
5549 if (request_ccb == NULL) {
5550 request_ccb = kmalloc(sizeof(union ccb), M_CAMXPT, M_INTWAIT);
5551 new_path = kmalloc(sizeof(*new_path), M_CAMXPT, M_INTWAIT);
5552 status = xpt_compile_path(new_path, xpt_periph,
5554 path->target->target_id,
5555 path->device->lun_id);
5557 if (status != CAM_REQ_CMP) {
5558 xpt_print(path, "xpt_scan_lun: can't compile path, "
5559 "can't continue\n");
5560 kfree(request_ccb, M_CAMXPT);
5561 kfree(new_path, M_CAMXPT);
5564 xpt_setup_ccb(&request_ccb->ccb_h, new_path, /*priority*/ 1);
5565 request_ccb->ccb_h.cbfcnp = xptscandone;
5566 request_ccb->ccb_h.func_code = XPT_SCAN_LUN;
5567 request_ccb->crcn.flags = flags;
5570 if ((old_periph = cam_periph_find(path, "probe")) != NULL) {
5573 softc = (probe_softc *)old_periph->softc;
5574 TAILQ_INSERT_TAIL(&softc->request_ccbs, &request_ccb->ccb_h,
5577 status = cam_periph_alloc(proberegister, NULL, probecleanup,
5578 probestart, "probe",
5580 request_ccb->ccb_h.path, NULL, 0,
5583 if (status != CAM_REQ_CMP) {
5584 xpt_print(path, "xpt_scan_lun: cam_alloc_periph "
5585 "returned an error, can't continue probe\n");
5586 request_ccb->ccb_h.status = status;
5587 xpt_done(request_ccb);
5593 xptscandone(struct cam_periph *periph, union ccb *done_ccb)
5595 xpt_release_path(done_ccb->ccb_h.path);
5596 kfree(done_ccb->ccb_h.path, M_CAMXPT);
5597 kfree(done_ccb, M_CAMXPT);
5601 proberegister(struct cam_periph *periph, void *arg)
5603 union ccb *request_ccb; /* CCB representing the probe request */
5607 request_ccb = (union ccb *)arg;
5608 if (periph == NULL) {
5609 kprintf("proberegister: periph was NULL!!\n");
5610 return(CAM_REQ_CMP_ERR);
5613 if (request_ccb == NULL) {
5614 kprintf("proberegister: no probe CCB, "
5615 "can't register device\n");
5616 return(CAM_REQ_CMP_ERR);
5619 softc = kmalloc(sizeof(*softc), M_CAMXPT, M_INTWAIT | M_ZERO);
5620 TAILQ_INIT(&softc->request_ccbs);
5621 TAILQ_INSERT_TAIL(&softc->request_ccbs, &request_ccb->ccb_h,
5624 periph->softc = softc;
5625 status = cam_periph_acquire(periph);
5626 if (status != CAM_REQ_CMP) {
5632 * Ensure we've waited at least a bus settle
5633 * delay before attempting to probe the device.
5634 * For HBAs that don't do bus resets, this won't make a difference.
5636 cam_periph_freeze_after_event(periph, &periph->path->bus->last_reset,
5638 probeschedule(periph);
5639 return(CAM_REQ_CMP);
5643 probeschedule(struct cam_periph *periph)
5645 struct ccb_pathinq cpi;
5649 softc = (probe_softc *)periph->softc;
5650 ccb = (union ccb *)TAILQ_FIRST(&softc->request_ccbs);
5652 xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1);
5653 cpi.ccb_h.func_code = XPT_PATH_INQ;
5654 xpt_action((union ccb *)&cpi);
5657 * If a device has gone away and another device, or the same one,
5658 * is back in the same place, it should have a unit attention
5659 * condition pending. It will not report the unit attention in
5660 * response to an inquiry, which may leave invalid transfer
5661 * negotiations in effect. The TUR will reveal the unit attention
5662 * condition. Only send the TUR for lun 0, since some devices
5663 * will get confused by commands other than inquiry to non-existent
5664 * luns. If you think a device has gone away start your scan from
5665 * lun 0. This will insure that any bogus transfer settings are
5668 * If we haven't seen the device before and the controller supports
5669 * some kind of transfer negotiation, negotiate with the first
5670 * sent command if no bus reset was performed at startup. This
5671 * ensures that the device is not confused by transfer negotiation
5672 * settings left over by loader or BIOS action.
5674 if (((ccb->ccb_h.path->device->flags & CAM_DEV_UNCONFIGURED) == 0)
5675 && (ccb->ccb_h.target_lun == 0)) {
5676 softc->action = PROBE_TUR;
5677 } else if ((cpi.hba_inquiry & (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE)) != 0
5678 && (cpi.hba_misc & PIM_NOBUSRESET) != 0) {
5679 proberequestdefaultnegotiation(periph);
5680 softc->action = PROBE_INQUIRY;
5682 softc->action = PROBE_INQUIRY;
5685 if (ccb->crcn.flags & CAM_EXPECT_INQ_CHANGE)
5686 softc->flags |= PROBE_NO_ANNOUNCE;
5688 softc->flags &= ~PROBE_NO_ANNOUNCE;
5690 xpt_schedule(periph, ccb->ccb_h.pinfo.priority);
5694 probestart(struct cam_periph *periph, union ccb *start_ccb)
5696 /* Probe the device that our peripheral driver points to */
5697 struct ccb_scsiio *csio;
5700 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("probestart\n"));
5702 softc = (probe_softc *)periph->softc;
5703 csio = &start_ccb->csio;
5705 switch (softc->action) {
5707 case PROBE_TUR_FOR_NEGOTIATION:
5710 scsi_test_unit_ready(csio,
5719 case PROBE_FULL_INQUIRY:
5720 case PROBE_INQUIRY_BASIC_DV1:
5721 case PROBE_INQUIRY_BASIC_DV2:
5724 struct scsi_inquiry_data *inq_buf;
5726 inq_buf = &periph->path->device->inq_data;
5729 * If the device is currently configured, we calculate an
5730 * MD5 checksum of the inquiry data, and if the serial number
5731 * length is greater than 0, add the serial number data
5732 * into the checksum as well. Once the inquiry and the
5733 * serial number check finish, we attempt to figure out
5734 * whether we still have the same device.
5736 if ((periph->path->device->flags & CAM_DEV_UNCONFIGURED) == 0) {
5738 MD5Init(&softc->context);
5739 MD5Update(&softc->context, (unsigned char *)inq_buf,
5740 sizeof(struct scsi_inquiry_data));
5741 softc->flags |= PROBE_INQUIRY_CKSUM;
5742 if (periph->path->device->serial_num_len > 0) {
5743 MD5Update(&softc->context,
5744 periph->path->device->serial_num,
5745 periph->path->device->serial_num_len);
5746 softc->flags |= PROBE_SERIAL_CKSUM;
5748 MD5Final(softc->digest, &softc->context);
5751 if (softc->action == PROBE_INQUIRY)
5752 inquiry_len = SHORT_INQUIRY_LENGTH;
5754 inquiry_len = SID_ADDITIONAL_LENGTH(inq_buf);
5757 * Some parallel SCSI devices fail to send an
5758 * ignore wide residue message when dealing with
5759 * odd length inquiry requests. Round up to be
5762 inquiry_len = roundup2(inquiry_len, 2);
5764 if (softc->action == PROBE_INQUIRY_BASIC_DV1
5765 || softc->action == PROBE_INQUIRY_BASIC_DV2) {
5766 inq_buf = kmalloc(inquiry_len, M_CAMXPT, M_INTWAIT);
5772 (u_int8_t *)inq_buf,
5777 /*timeout*/60 * 1000);
5780 case PROBE_MODE_SENSE:
5785 mode_buf_len = sizeof(struct scsi_mode_header_6)
5786 + sizeof(struct scsi_mode_blk_desc)
5787 + sizeof(struct scsi_control_page);
5788 mode_buf = kmalloc(mode_buf_len, M_CAMXPT, M_INTWAIT);
5789 scsi_mode_sense(csio,
5794 SMS_PAGE_CTRL_CURRENT,
5795 SMS_CONTROL_MODE_PAGE,
5802 case PROBE_SERIAL_NUM_0:
5804 struct scsi_vpd_supported_page_list *vpd_list = NULL;
5805 struct cam_ed *device;
5807 device = periph->path->device;
5808 if ((device->quirk->quirks & CAM_QUIRK_NOSERIAL) == 0) {
5809 vpd_list = kmalloc(sizeof(*vpd_list), M_CAMXPT,
5810 M_INTWAIT | M_ZERO);
5813 if (vpd_list != NULL) {
5818 (u_int8_t *)vpd_list,
5821 SVPD_SUPPORTED_PAGE_LIST,
5823 /*timeout*/60 * 1000);
5827 * We'll have to do without, let our probedone
5828 * routine finish up for us.
5830 start_ccb->csio.data_ptr = NULL;
5831 probedone(periph, start_ccb);
5834 case PROBE_SERIAL_NUM_1:
5836 struct scsi_vpd_unit_serial_number *serial_buf;
5837 struct cam_ed* device;
5840 device = periph->path->device;
5841 device->serial_num = NULL;
5842 device->serial_num_len = 0;
5844 serial_buf = (struct scsi_vpd_unit_serial_number *)
5845 kmalloc(sizeof(*serial_buf), M_CAMXPT,
5846 M_INTWAIT | M_ZERO);
5851 (u_int8_t *)serial_buf,
5852 sizeof(*serial_buf),
5854 SVPD_UNIT_SERIAL_NUMBER,
5856 /*timeout*/60 * 1000);
5860 xpt_action(start_ccb);
5864 proberequestdefaultnegotiation(struct cam_periph *periph)
5866 struct ccb_trans_settings cts;
5868 xpt_setup_ccb(&cts.ccb_h, periph->path, /*priority*/1);
5869 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
5870 cts.type = CTS_TYPE_USER_SETTINGS;
5871 xpt_action((union ccb *)&cts);
5872 if ((cts.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
5875 cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
5876 cts.type = CTS_TYPE_CURRENT_SETTINGS;
5877 xpt_action((union ccb *)&cts);
5881 * Backoff Negotiation Code- only pertinent for SPI devices.
5884 proberequestbackoff(struct cam_periph *periph, struct cam_ed *device)
5886 struct ccb_trans_settings cts;
5887 struct ccb_trans_settings_spi *spi;
5889 memset(&cts, 0, sizeof (cts));
5890 xpt_setup_ccb(&cts.ccb_h, periph->path, /*priority*/1);
5891 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
5892 cts.type = CTS_TYPE_CURRENT_SETTINGS;
5893 xpt_action((union ccb *)&cts);
5894 if ((cts.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
5896 xpt_print(periph->path,
5897 "failed to get current device settings\n");
5901 if (cts.transport != XPORT_SPI) {
5903 xpt_print(periph->path, "not SPI transport\n");
5907 spi = &cts.xport_specific.spi;
5910 * We cannot renegotiate sync rate if we don't have one.
5912 if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0) {
5914 xpt_print(periph->path, "no sync rate known\n");
5920 * We'll assert that we don't have to touch PPR options- the
5921 * SIM will see what we do with period and offset and adjust
5922 * the PPR options as appropriate.
5926 * A sync rate with unknown or zero offset is nonsensical.
5927 * A sync period of zero means Async.
5929 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0
5930 || spi->sync_offset == 0 || spi->sync_period == 0) {
5932 xpt_print(periph->path, "no sync rate available\n");
5937 if (device->flags & CAM_DEV_DV_HIT_BOTTOM) {
5938 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
5939 ("hit async: giving up on DV\n"));
5945 * Jump sync_period up by one, but stop at 5MHz and fall back to Async.
5946 * We don't try to remember 'last' settings to see if the SIM actually
5947 * gets into the speed we want to set. We check on the SIM telling
5948 * us that a requested speed is bad, but otherwise don't try and
5949 * check the speed due to the asynchronous and handshake nature
5952 spi->valid = CTS_SPI_VALID_SYNC_RATE | CTS_SPI_VALID_SYNC_OFFSET;
5955 if (spi->sync_period >= 0xf) {
5956 spi->sync_period = 0;
5957 spi->sync_offset = 0;
5958 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
5959 ("setting to async for DV\n"));
5961 * Once we hit async, we don't want to try
5962 * any more settings.
5964 device->flags |= CAM_DEV_DV_HIT_BOTTOM;
5965 } else if (bootverbose) {
5966 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
5967 ("DV: period 0x%x\n", spi->sync_period));
5968 kprintf("setting period to 0x%x\n", spi->sync_period);
5970 cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
5971 cts.type = CTS_TYPE_CURRENT_SETTINGS;
5972 xpt_action((union ccb *)&cts);
5973 if ((cts.ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
5976 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
5977 ("DV: failed to set period 0x%x\n", spi->sync_period));
5978 if (spi->sync_period == 0) {
5986 probedone(struct cam_periph *periph, union ccb *done_ccb)
5989 struct cam_path *path;
5992 CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("probedone\n"));
5994 softc = (probe_softc *)periph->softc;
5995 path = done_ccb->ccb_h.path;
5996 priority = done_ccb->ccb_h.pinfo.priority;
5998 switch (softc->action) {
6001 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
6003 if (cam_periph_error(done_ccb, 0,
6004 SF_NO_PRINT, NULL) == ERESTART)
6006 else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
6007 /* Don't wedge the queue */
6008 xpt_release_devq(done_ccb->ccb_h.path,
6012 softc->action = PROBE_INQUIRY;
6013 xpt_release_ccb(done_ccb);
6014 xpt_schedule(periph, priority);
6018 case PROBE_FULL_INQUIRY:
6020 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
6021 struct scsi_inquiry_data *inq_buf;
6022 u_int8_t periph_qual;
6024 path->device->flags |= CAM_DEV_INQUIRY_DATA_VALID;
6025 inq_buf = &path->device->inq_data;
6027 periph_qual = SID_QUAL(inq_buf);
6029 switch(periph_qual) {
6030 case SID_QUAL_LU_CONNECTED:
6035 * We conservatively request only
6036 * SHORT_INQUIRY_LEN bytes of inquiry
6037 * information during our first try
6038 * at sending an INQUIRY. If the device
6039 * has more information to give,
6040 * perform a second request specifying
6041 * the amount of information the device
6042 * is willing to give.
6044 len = inq_buf->additional_length
6045 + offsetof(struct scsi_inquiry_data,
6046 additional_length) + 1;
6047 if (softc->action == PROBE_INQUIRY
6048 && len > SHORT_INQUIRY_LENGTH) {
6049 softc->action = PROBE_FULL_INQUIRY;
6050 xpt_release_ccb(done_ccb);
6051 xpt_schedule(periph, priority);
6055 xpt_find_quirk(path->device);
6057 xpt_devise_transport(path);
6058 if (INQ_DATA_TQ_ENABLED(inq_buf))
6059 softc->action = PROBE_MODE_SENSE;
6061 softc->action = PROBE_SERIAL_NUM_0;
6063 path->device->flags &= ~CAM_DEV_UNCONFIGURED;
6064 xpt_reference_device(path->device);
6066 xpt_release_ccb(done_ccb);
6067 xpt_schedule(periph, priority);
6073 } else if (cam_periph_error(done_ccb, 0,
6074 done_ccb->ccb_h.target_lun > 0
6075 ? SF_RETRY_UA|SF_QUIET_IR
6077 &softc->saved_ccb) == ERESTART) {
6079 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
6080 /* Don't wedge the queue */
6081 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
6085 * If we get to this point, we got an error status back
6086 * from the inquiry and the error status doesn't require
6087 * automatically retrying the command. Therefore, the
6088 * inquiry failed. If we had inquiry information before
6089 * for this device, but this latest inquiry command failed,
6090 * the device has probably gone away. If this device isn't
6091 * already marked unconfigured, notify the peripheral
6092 * drivers that this device is no more.
6094 if ((path->device->flags & CAM_DEV_UNCONFIGURED) == 0) {
6095 /* Send the async notification. */
6096 xpt_async(AC_LOST_DEVICE, path, NULL);
6099 xpt_release_ccb(done_ccb);
6102 case PROBE_MODE_SENSE:
6104 struct ccb_scsiio *csio;
6105 struct scsi_mode_header_6 *mode_hdr;
6107 csio = &done_ccb->csio;
6108 mode_hdr = (struct scsi_mode_header_6 *)csio->data_ptr;
6109 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
6110 struct scsi_control_page *page;
6113 offset = ((u_int8_t *)&mode_hdr[1])
6114 + mode_hdr->blk_desc_len;
6115 page = (struct scsi_control_page *)offset;
6116 path->device->queue_flags = page->queue_flags;
6117 } else if (cam_periph_error(done_ccb, 0,
6118 SF_RETRY_UA|SF_NO_PRINT,
6119 &softc->saved_ccb) == ERESTART) {
6121 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
6122 /* Don't wedge the queue */
6123 xpt_release_devq(done_ccb->ccb_h.path,
6124 /*count*/1, /*run_queue*/TRUE);
6126 xpt_release_ccb(done_ccb);
6127 kfree(mode_hdr, M_CAMXPT);
6128 softc->action = PROBE_SERIAL_NUM_0;
6129 xpt_schedule(periph, priority);
6132 case PROBE_SERIAL_NUM_0:
6134 struct ccb_scsiio *csio;
6135 struct scsi_vpd_supported_page_list *page_list;
6136 int length, serialnum_supported, i;
6138 serialnum_supported = 0;
6139 csio = &done_ccb->csio;
6141 (struct scsi_vpd_supported_page_list *)csio->data_ptr;
6143 if (page_list == NULL) {
6145 * Don't process the command as it was never sent
6147 } else if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP
6148 && (page_list->length > 0)) {
6149 length = min(page_list->length,
6150 SVPD_SUPPORTED_PAGES_SIZE);
6151 for (i = 0; i < length; i++) {
6152 if (page_list->list[i] ==
6153 SVPD_UNIT_SERIAL_NUMBER) {
6154 serialnum_supported = 1;
6158 } else if (cam_periph_error(done_ccb, 0,
6159 SF_RETRY_UA|SF_NO_PRINT,
6160 &softc->saved_ccb) == ERESTART) {
6162 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
6163 /* Don't wedge the queue */
6164 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
6168 if (page_list != NULL)
6169 kfree(page_list, M_DEVBUF);
6171 if (serialnum_supported) {
6172 xpt_release_ccb(done_ccb);
6173 softc->action = PROBE_SERIAL_NUM_1;
6174 xpt_schedule(periph, priority);
6177 xpt_release_ccb(done_ccb);
6178 softc->action = PROBE_TUR_FOR_NEGOTIATION;
6179 xpt_schedule(periph, done_ccb->ccb_h.pinfo.priority);
6183 case PROBE_SERIAL_NUM_1:
6185 struct ccb_scsiio *csio;
6186 struct scsi_vpd_unit_serial_number *serial_buf;
6193 csio = &done_ccb->csio;
6194 priority = done_ccb->ccb_h.pinfo.priority;
6196 (struct scsi_vpd_unit_serial_number *)csio->data_ptr;
6198 /* Clean up from previous instance of this device */
6199 if (path->device->serial_num != NULL) {
6200 kfree(path->device->serial_num, M_CAMXPT);
6201 path->device->serial_num = NULL;
6202 path->device->serial_num_len = 0;
6205 if (serial_buf == NULL) {
6207 * Don't process the command as it was never sent
6209 } else if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP
6210 && (serial_buf->length > 0)) {
6213 path->device->serial_num =
6214 kmalloc((serial_buf->length + 1),
6215 M_CAMXPT, M_INTWAIT);
6216 bcopy(serial_buf->serial_num,
6217 path->device->serial_num,
6218 serial_buf->length);
6219 path->device->serial_num_len = serial_buf->length;
6220 path->device->serial_num[serial_buf->length] = '\0';
6221 } else if (cam_periph_error(done_ccb, 0,
6222 SF_RETRY_UA|SF_NO_PRINT,
6223 &softc->saved_ccb) == ERESTART) {
6225 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
6226 /* Don't wedge the queue */
6227 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
6232 * Let's see if we have seen this device before.
6234 if ((softc->flags & PROBE_INQUIRY_CKSUM) != 0) {
6236 u_int8_t digest[16];
6241 (unsigned char *)&path->device->inq_data,
6242 sizeof(struct scsi_inquiry_data));
6245 MD5Update(&context, serial_buf->serial_num,
6246 serial_buf->length);
6248 MD5Final(digest, &context);
6249 if (bcmp(softc->digest, digest, 16) == 0)
6253 * XXX Do we need to do a TUR in order to ensure
6254 * that the device really hasn't changed???
6257 && ((softc->flags & PROBE_NO_ANNOUNCE) == 0))
6258 xpt_async(AC_LOST_DEVICE, path, NULL);
6260 if (serial_buf != NULL)
6261 kfree(serial_buf, M_CAMXPT);
6265 * Now that we have all the necessary
6266 * information to safely perform transfer
6267 * negotiations... Controllers don't perform
6268 * any negotiation or tagged queuing until
6269 * after the first XPT_SET_TRAN_SETTINGS ccb is
6270 * received. So, on a new device, just retrieve
6271 * the user settings, and set them as the current
6272 * settings to set the device up.
6274 proberequestdefaultnegotiation(periph);
6275 xpt_release_ccb(done_ccb);
6278 * Perform a TUR to allow the controller to
6279 * perform any necessary transfer negotiation.
6281 softc->action = PROBE_TUR_FOR_NEGOTIATION;
6282 xpt_schedule(periph, priority);
6285 xpt_release_ccb(done_ccb);
6288 case PROBE_TUR_FOR_NEGOTIATION:
6290 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
6291 /* Don't wedge the queue */
6292 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
6296 xpt_reference_device(path->device);
6298 * Do Domain Validation for lun 0 on devices that claim
6299 * to support Synchronous Transfer modes.
6301 if (softc->action == PROBE_TUR_FOR_NEGOTIATION
6302 && done_ccb->ccb_h.target_lun == 0
6303 && (path->device->inq_data.flags & SID_Sync) != 0
6304 && (path->device->flags & CAM_DEV_IN_DV) == 0) {
6305 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
6306 ("Begin Domain Validation\n"));
6307 path->device->flags |= CAM_DEV_IN_DV;
6308 xpt_release_ccb(done_ccb);
6309 softc->action = PROBE_INQUIRY_BASIC_DV1;
6310 xpt_schedule(periph, priority);
6313 if (softc->action == PROBE_DV_EXIT) {
6314 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
6315 ("Leave Domain Validation\n"));
6317 path->device->flags &=
6318 ~(CAM_DEV_UNCONFIGURED|CAM_DEV_IN_DV|CAM_DEV_DV_HIT_BOTTOM);
6319 if ((softc->flags & PROBE_NO_ANNOUNCE) == 0) {
6320 /* Inform the XPT that a new device has been found */
6321 done_ccb->ccb_h.func_code = XPT_GDEV_TYPE;
6322 xpt_action(done_ccb);
6323 xpt_async(AC_FOUND_DEVICE, done_ccb->ccb_h.path,
6326 xpt_release_ccb(done_ccb);
6328 case PROBE_INQUIRY_BASIC_DV1:
6329 case PROBE_INQUIRY_BASIC_DV2:
6331 struct scsi_inquiry_data *nbuf;
6332 struct ccb_scsiio *csio;
6334 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
6335 /* Don't wedge the queue */
6336 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
6339 csio = &done_ccb->csio;
6340 nbuf = (struct scsi_inquiry_data *)csio->data_ptr;
6341 if (bcmp(nbuf, &path->device->inq_data, SHORT_INQUIRY_LENGTH)) {
6343 "inquiry data fails comparison at DV%d step\n",
6344 softc->action == PROBE_INQUIRY_BASIC_DV1 ? 1 : 2);
6345 if (proberequestbackoff(periph, path->device)) {
6346 path->device->flags &= ~CAM_DEV_IN_DV;
6347 softc->action = PROBE_TUR_FOR_NEGOTIATION;
6350 softc->action = PROBE_DV_EXIT;
6352 kfree(nbuf, M_CAMXPT);
6353 xpt_release_ccb(done_ccb);
6354 xpt_schedule(periph, priority);
6357 kfree(nbuf, M_CAMXPT);
6358 if (softc->action == PROBE_INQUIRY_BASIC_DV1) {
6359 softc->action = PROBE_INQUIRY_BASIC_DV2;
6360 xpt_release_ccb(done_ccb);
6361 xpt_schedule(periph, priority);
6364 if (softc->action == PROBE_DV_EXIT) {
6365 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
6366 ("Leave Domain Validation Successfully\n"));
6368 path->device->flags &=
6369 ~(CAM_DEV_UNCONFIGURED|CAM_DEV_IN_DV|CAM_DEV_DV_HIT_BOTTOM);
6370 if ((softc->flags & PROBE_NO_ANNOUNCE) == 0) {
6371 /* Inform the XPT that a new device has been found */
6372 done_ccb->ccb_h.func_code = XPT_GDEV_TYPE;
6373 xpt_action(done_ccb);
6374 xpt_async(AC_FOUND_DEVICE, done_ccb->ccb_h.path,
6377 xpt_release_ccb(done_ccb);
6381 done_ccb = (union ccb *)TAILQ_FIRST(&softc->request_ccbs);
6382 TAILQ_REMOVE(&softc->request_ccbs, &done_ccb->ccb_h, periph_links.tqe);
6383 done_ccb->ccb_h.status = CAM_REQ_CMP;
6385 if (TAILQ_FIRST(&softc->request_ccbs) == NULL) {
6386 cam_periph_invalidate(periph);
6387 cam_periph_release(periph);
6389 probeschedule(periph);
6394 probecleanup(struct cam_periph *periph)
6396 kfree(periph->softc, M_CAMXPT);
6400 xpt_find_quirk(struct cam_ed *device)
6404 match = cam_quirkmatch((caddr_t)&device->inq_data,
6405 (caddr_t)xpt_quirk_table,
6406 sizeof(xpt_quirk_table)/sizeof(*xpt_quirk_table),
6407 sizeof(*xpt_quirk_table), scsi_inquiry_match);
6410 panic("xpt_find_quirk: device didn't match wildcard entry!!");
6412 device->quirk = (struct xpt_quirk_entry *)match;
6416 sysctl_cam_search_luns(SYSCTL_HANDLER_ARGS)
6421 error = sysctl_handle_int(oidp, &bool, 0, req);
6422 if (error != 0 || req->newptr == NULL)
6424 if (bool == 0 || bool == 1) {
6433 xpt_devise_transport(struct cam_path *path)
6435 struct ccb_pathinq cpi;
6436 struct ccb_trans_settings cts;
6437 struct scsi_inquiry_data *inq_buf;
6439 /* Get transport information from the SIM */
6440 xpt_setup_ccb(&cpi.ccb_h, path, /*priority*/1);
6441 cpi.ccb_h.func_code = XPT_PATH_INQ;
6442 xpt_action((union ccb *)&cpi);
6445 if ((path->device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0)
6446 inq_buf = &path->device->inq_data;
6447 path->device->protocol = PROTO_SCSI;
6448 path->device->protocol_version =
6449 inq_buf != NULL ? SID_ANSI_REV(inq_buf) : cpi.protocol_version;
6450 path->device->transport = cpi.transport;
6451 path->device->transport_version = cpi.transport_version;
6454 * Any device not using SPI3 features should
6455 * be considered SPI2 or lower.
6457 if (inq_buf != NULL) {
6458 if (path->device->transport == XPORT_SPI
6459 && (inq_buf->spi3data & SID_SPI_MASK) == 0
6460 && path->device->transport_version > 2)
6461 path->device->transport_version = 2;
6463 struct cam_ed* otherdev;
6465 for (otherdev = TAILQ_FIRST(&path->target->ed_entries);
6467 otherdev = TAILQ_NEXT(otherdev, links)) {
6468 if (otherdev != path->device)
6472 if (otherdev != NULL) {
6474 * Initially assume the same versioning as
6475 * prior luns for this target.
6477 path->device->protocol_version =
6478 otherdev->protocol_version;
6479 path->device->transport_version =
6480 otherdev->transport_version;
6482 /* Until we know better, opt for safty */
6483 path->device->protocol_version = 2;
6484 if (path->device->transport == XPORT_SPI)
6485 path->device->transport_version = 2;
6487 path->device->transport_version = 0;
6493 * For a device compliant with SPC-2 we should be able
6494 * to determine the transport version supported by
6495 * scrutinizing the version descriptors in the
6499 /* Tell the controller what we think */
6500 xpt_setup_ccb(&cts.ccb_h, path, /*priority*/1);
6501 cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
6502 cts.type = CTS_TYPE_CURRENT_SETTINGS;
6503 cts.transport = path->device->transport;
6504 cts.transport_version = path->device->transport_version;
6505 cts.protocol = path->device->protocol;
6506 cts.protocol_version = path->device->protocol_version;
6507 cts.proto_specific.valid = 0;
6508 cts.xport_specific.valid = 0;
6509 xpt_action((union ccb *)&cts);
6513 xpt_set_transfer_settings(struct ccb_trans_settings *cts, struct cam_ed *device,
6516 struct ccb_pathinq cpi;
6517 struct ccb_trans_settings cur_cts;
6518 struct ccb_trans_settings_scsi *scsi;
6519 struct ccb_trans_settings_scsi *cur_scsi;
6520 struct cam_sim *sim;
6521 struct scsi_inquiry_data *inq_data;
6523 if (device == NULL) {
6524 cts->ccb_h.status = CAM_PATH_INVALID;
6525 xpt_done((union ccb *)cts);
6529 if (cts->protocol == PROTO_UNKNOWN
6530 || cts->protocol == PROTO_UNSPECIFIED) {
6531 cts->protocol = device->protocol;
6532 cts->protocol_version = device->protocol_version;
6535 if (cts->protocol_version == PROTO_VERSION_UNKNOWN
6536 || cts->protocol_version == PROTO_VERSION_UNSPECIFIED)
6537 cts->protocol_version = device->protocol_version;
6539 if (cts->protocol != device->protocol) {
6540 xpt_print(cts->ccb_h.path, "Uninitialized Protocol %x:%x?\n",
6541 cts->protocol, device->protocol);
6542 cts->protocol = device->protocol;
6545 if (cts->protocol_version > device->protocol_version) {
6547 xpt_print(cts->ccb_h.path, "Down reving Protocol "
6548 "Version from %d to %d?\n", cts->protocol_version,
6549 device->protocol_version);
6551 cts->protocol_version = device->protocol_version;
6554 if (cts->transport == XPORT_UNKNOWN
6555 || cts->transport == XPORT_UNSPECIFIED) {
6556 cts->transport = device->transport;
6557 cts->transport_version = device->transport_version;
6560 if (cts->transport_version == XPORT_VERSION_UNKNOWN
6561 || cts->transport_version == XPORT_VERSION_UNSPECIFIED)
6562 cts->transport_version = device->transport_version;
6564 if (cts->transport != device->transport) {
6565 xpt_print(cts->ccb_h.path, "Uninitialized Transport %x:%x?\n",
6566 cts->transport, device->transport);
6567 cts->transport = device->transport;
6570 if (cts->transport_version > device->transport_version) {
6572 xpt_print(cts->ccb_h.path, "Down reving Transport "
6573 "Version from %d to %d?\n", cts->transport_version,
6574 device->transport_version);
6576 cts->transport_version = device->transport_version;
6579 sim = cts->ccb_h.path->bus->sim;
6582 * Nothing more of interest to do unless
6583 * this is a device connected via the
6586 if (cts->protocol != PROTO_SCSI) {
6587 if (async_update == FALSE)
6588 (*(sim->sim_action))(sim, (union ccb *)cts);
6592 inq_data = &device->inq_data;
6593 scsi = &cts->proto_specific.scsi;
6594 xpt_setup_ccb(&cpi.ccb_h, cts->ccb_h.path, /*priority*/1);
6595 cpi.ccb_h.func_code = XPT_PATH_INQ;
6596 xpt_action((union ccb *)&cpi);
6598 /* SCSI specific sanity checking */
6599 if ((cpi.hba_inquiry & PI_TAG_ABLE) == 0
6600 || (INQ_DATA_TQ_ENABLED(inq_data)) == 0
6601 || (device->queue_flags & SCP_QUEUE_DQUE) != 0
6602 || (device->quirk->mintags == 0)) {
6604 * Can't tag on hardware that doesn't support tags,
6605 * doesn't have it enabled, or has broken tag support.
6607 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
6610 if (async_update == FALSE) {
6612 * Perform sanity checking against what the
6613 * controller and device can do.
6615 xpt_setup_ccb(&cur_cts.ccb_h, cts->ccb_h.path, /*priority*/1);
6616 cur_cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
6617 cur_cts.type = cts->type;
6618 xpt_action((union ccb *)&cur_cts);
6619 if ((cur_cts.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
6622 cur_scsi = &cur_cts.proto_specific.scsi;
6623 if ((scsi->valid & CTS_SCSI_VALID_TQ) == 0) {
6624 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
6625 scsi->flags |= cur_scsi->flags & CTS_SCSI_FLAGS_TAG_ENB;
6627 if ((cur_scsi->valid & CTS_SCSI_VALID_TQ) == 0)
6628 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
6631 /* SPI specific sanity checking */
6632 if (cts->transport == XPORT_SPI && async_update == FALSE) {
6634 struct ccb_trans_settings_spi *spi;
6635 struct ccb_trans_settings_spi *cur_spi;
6637 spi = &cts->xport_specific.spi;
6639 cur_spi = &cur_cts.xport_specific.spi;
6641 /* Fill in any gaps in what the user gave us */
6642 if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0)
6643 spi->sync_period = cur_spi->sync_period;
6644 if ((cur_spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0)
6645 spi->sync_period = 0;
6646 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0)
6647 spi->sync_offset = cur_spi->sync_offset;
6648 if ((cur_spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0)
6649 spi->sync_offset = 0;
6650 if ((spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0)
6651 spi->ppr_options = cur_spi->ppr_options;
6652 if ((cur_spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0)
6653 spi->ppr_options = 0;
6654 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) == 0)
6655 spi->bus_width = cur_spi->bus_width;
6656 if ((cur_spi->valid & CTS_SPI_VALID_BUS_WIDTH) == 0)
6658 if ((spi->valid & CTS_SPI_VALID_DISC) == 0) {
6659 spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
6660 spi->flags |= cur_spi->flags & CTS_SPI_FLAGS_DISC_ENB;
6662 if ((cur_spi->valid & CTS_SPI_VALID_DISC) == 0)
6663 spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
6664 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0
6665 && (inq_data->flags & SID_Sync) == 0
6666 && cts->type == CTS_TYPE_CURRENT_SETTINGS)
6667 || ((cpi.hba_inquiry & PI_SDTR_ABLE) == 0)
6668 || (spi->sync_offset == 0)
6669 || (spi->sync_period == 0)) {
6671 spi->sync_period = 0;
6672 spi->sync_offset = 0;
6675 switch (spi->bus_width) {
6676 case MSG_EXT_WDTR_BUS_32_BIT:
6677 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0
6678 || (inq_data->flags & SID_WBus32) != 0
6679 || cts->type == CTS_TYPE_USER_SETTINGS)
6680 && (cpi.hba_inquiry & PI_WIDE_32) != 0)
6682 /* Fall Through to 16-bit */
6683 case MSG_EXT_WDTR_BUS_16_BIT:
6684 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0
6685 || (inq_data->flags & SID_WBus16) != 0
6686 || cts->type == CTS_TYPE_USER_SETTINGS)
6687 && (cpi.hba_inquiry & PI_WIDE_16) != 0) {
6688 spi->bus_width = MSG_EXT_WDTR_BUS_16_BIT;
6691 /* Fall Through to 8-bit */
6692 default: /* New bus width?? */
6693 case MSG_EXT_WDTR_BUS_8_BIT:
6694 /* All targets can do this */
6695 spi->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
6699 spi3caps = cpi.xport_specific.spi.ppr_options;
6700 if ((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0
6701 && cts->type == CTS_TYPE_CURRENT_SETTINGS)
6702 spi3caps &= inq_data->spi3data;
6704 if ((spi3caps & SID_SPI_CLOCK_DT) == 0)
6705 spi->ppr_options &= ~MSG_EXT_PPR_DT_REQ;
6707 if ((spi3caps & SID_SPI_IUS) == 0)
6708 spi->ppr_options &= ~MSG_EXT_PPR_IU_REQ;
6710 if ((spi3caps & SID_SPI_QAS) == 0)
6711 spi->ppr_options &= ~MSG_EXT_PPR_QAS_REQ;
6713 /* No SPI Transfer settings are allowed unless we are wide */
6714 if (spi->bus_width == 0)
6715 spi->ppr_options = 0;
6717 if ((spi->flags & CTS_SPI_FLAGS_DISC_ENB) == 0) {
6719 * Can't tag queue without disconnection.
6721 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
6722 scsi->valid |= CTS_SCSI_VALID_TQ;
6726 * If we are currently performing tagged transactions to
6727 * this device and want to change its negotiation parameters,
6728 * go non-tagged for a bit to give the controller a chance to
6729 * negotiate unhampered by tag messages.
6731 if (cts->type == CTS_TYPE_CURRENT_SETTINGS
6732 && (device->inq_flags & SID_CmdQue) != 0
6733 && (scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0
6734 && (spi->flags & (CTS_SPI_VALID_SYNC_RATE|
6735 CTS_SPI_VALID_SYNC_OFFSET|
6736 CTS_SPI_VALID_BUS_WIDTH)) != 0)
6737 xpt_toggle_tags(cts->ccb_h.path);
6740 if (cts->type == CTS_TYPE_CURRENT_SETTINGS
6741 && (scsi->valid & CTS_SCSI_VALID_TQ) != 0) {
6745 * If we are transitioning from tags to no-tags or
6746 * vice-versa, we need to carefully freeze and restart
6747 * the queue so that we don't overlap tagged and non-tagged
6748 * commands. We also temporarily stop tags if there is
6749 * a change in transfer negotiation settings to allow
6750 * "tag-less" negotiation.
6752 if ((device->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
6753 || (device->inq_flags & SID_CmdQue) != 0)
6754 device_tagenb = TRUE;
6756 device_tagenb = FALSE;
6758 if (((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0
6759 && device_tagenb == FALSE)
6760 || ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) == 0
6761 && device_tagenb == TRUE)) {
6763 if ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0) {
6765 * Delay change to use tags until after a
6766 * few commands have gone to this device so
6767 * the controller has time to perform transfer
6768 * negotiations without tagged messages getting
6771 device->tag_delay_count = CAM_TAG_DELAY_COUNT;
6772 device->flags |= CAM_DEV_TAG_AFTER_COUNT;
6774 struct ccb_relsim crs;
6776 xpt_freeze_devq(cts->ccb_h.path, /*count*/1);
6777 device->inq_flags &= ~SID_CmdQue;
6778 xpt_dev_ccbq_resize(cts->ccb_h.path,
6779 sim->max_dev_openings);
6780 device->flags &= ~CAM_DEV_TAG_AFTER_COUNT;
6781 device->tag_delay_count = 0;
6783 xpt_setup_ccb(&crs.ccb_h, cts->ccb_h.path,
6785 crs.ccb_h.func_code = XPT_REL_SIMQ;
6786 crs.release_flags = RELSIM_RELEASE_AFTER_QEMPTY;
6788 = crs.release_timeout
6791 xpt_action((union ccb *)&crs);
6795 if (async_update == FALSE)
6796 (*(sim->sim_action))(sim, (union ccb *)cts);
6800 xpt_toggle_tags(struct cam_path *path)
6805 * Give controllers a chance to renegotiate
6806 * before starting tag operations. We
6807 * "toggle" tagged queuing off then on
6808 * which causes the tag enable command delay
6809 * counter to come into effect.
6812 if ((dev->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
6813 || ((dev->inq_flags & SID_CmdQue) != 0
6814 && (dev->inq_flags & (SID_Sync|SID_WBus16|SID_WBus32)) != 0)) {
6815 struct ccb_trans_settings cts;
6817 xpt_setup_ccb(&cts.ccb_h, path, 1);
6818 cts.protocol = PROTO_SCSI;
6819 cts.protocol_version = PROTO_VERSION_UNSPECIFIED;
6820 cts.transport = XPORT_UNSPECIFIED;
6821 cts.transport_version = XPORT_VERSION_UNSPECIFIED;
6822 cts.proto_specific.scsi.flags = 0;
6823 cts.proto_specific.scsi.valid = CTS_SCSI_VALID_TQ;
6824 xpt_set_transfer_settings(&cts, path->device,
6825 /*async_update*/TRUE);
6826 cts.proto_specific.scsi.flags = CTS_SCSI_FLAGS_TAG_ENB;
6827 xpt_set_transfer_settings(&cts, path->device,
6828 /*async_update*/TRUE);
6833 xpt_start_tags(struct cam_path *path)
6835 struct ccb_relsim crs;
6836 struct cam_ed *device;
6837 struct cam_sim *sim;
6840 device = path->device;
6841 sim = path->bus->sim;
6842 device->flags &= ~CAM_DEV_TAG_AFTER_COUNT;
6843 xpt_freeze_devq(path, /*count*/1);
6844 device->inq_flags |= SID_CmdQue;
6845 if (device->tag_saved_openings != 0)
6846 newopenings = device->tag_saved_openings;
6848 newopenings = min(device->quirk->maxtags,
6849 sim->max_tagged_dev_openings);
6850 xpt_dev_ccbq_resize(path, newopenings);
6851 xpt_setup_ccb(&crs.ccb_h, path, /*priority*/1);
6852 crs.ccb_h.func_code = XPT_REL_SIMQ;
6853 crs.release_flags = RELSIM_RELEASE_AFTER_QEMPTY;
6855 = crs.release_timeout
6858 xpt_action((union ccb *)&crs);
6861 static int busses_to_config;
6862 static int busses_to_reset;
6865 xptconfigbuscountfunc(struct cam_eb *bus, void *arg)
6867 sim_lock_assert_owned(bus->sim->lock);
6869 if (bus->counted_to_config == 0 && bus->path_id != CAM_XPT_PATH_ID) {
6870 struct cam_path path;
6871 struct ccb_pathinq cpi;
6875 kprintf("CAM: Configuring bus:");
6879 bus->sim->unit_number);
6881 kprintf(" (unknown)\n");
6884 atomic_add_int(&busses_to_config, 1);
6885 bus->counted_to_config = 1;
6886 xpt_compile_path(&path, NULL, bus->path_id,
6887 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
6888 xpt_setup_ccb(&cpi.ccb_h, &path, /*priority*/1);
6889 cpi.ccb_h.func_code = XPT_PATH_INQ;
6890 xpt_action((union ccb *)&cpi);
6891 can_negotiate = cpi.hba_inquiry;
6892 can_negotiate &= (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE);
6893 if ((cpi.hba_misc & PIM_NOBUSRESET) == 0 && can_negotiate)
6895 xpt_release_path(&path);
6897 if (bus->counted_to_config == 0 && bus->path_id == CAM_XPT_PATH_ID) {
6898 /* this is our dummy periph/bus */
6899 atomic_add_int(&busses_to_config, 1);
6900 bus->counted_to_config = 1;
6907 xptconfigfunc(struct cam_eb *bus, void *arg)
6909 struct cam_path *path;
6910 union ccb *work_ccb;
6912 sim_lock_assert_owned(bus->sim->lock);
6914 if (bus->path_id != CAM_XPT_PATH_ID) {
6918 work_ccb = xpt_alloc_ccb();
6919 if ((status = xpt_create_path(&path, xpt_periph, bus->path_id,
6920 CAM_TARGET_WILDCARD,
6921 CAM_LUN_WILDCARD)) !=CAM_REQ_CMP){
6922 kprintf("xptconfigfunc: xpt_create_path failed with "
6923 "status %#x for bus %d\n", status, bus->path_id);
6924 kprintf("xptconfigfunc: halting bus configuration\n");
6925 xpt_free_ccb(work_ccb);
6926 xpt_uncount_bus(bus);
6929 xpt_setup_ccb(&work_ccb->ccb_h, path, /*priority*/1);
6930 work_ccb->ccb_h.func_code = XPT_PATH_INQ;
6931 xpt_action(work_ccb);
6932 if (work_ccb->ccb_h.status != CAM_REQ_CMP) {
6933 kprintf("xptconfigfunc: CPI failed on bus %d "
6934 "with status %d\n", bus->path_id,
6935 work_ccb->ccb_h.status);
6936 xpt_finishconfig(xpt_periph, work_ccb);
6940 can_negotiate = work_ccb->cpi.hba_inquiry;
6941 can_negotiate &= (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE);
6942 if ((work_ccb->cpi.hba_misc & PIM_NOBUSRESET) == 0
6943 && (can_negotiate != 0)) {
6944 xpt_setup_ccb(&work_ccb->ccb_h, path, /*priority*/1);
6945 work_ccb->ccb_h.func_code = XPT_RESET_BUS;
6946 work_ccb->ccb_h.cbfcnp = NULL;
6947 CAM_DEBUG(path, CAM_DEBUG_SUBTRACE,
6948 ("Resetting Bus\n"));
6949 xpt_action(work_ccb);
6950 xpt_finishconfig(xpt_periph, work_ccb);
6952 /* Act as though we performed a successful BUS RESET */
6953 work_ccb->ccb_h.func_code = XPT_RESET_BUS;
6954 xpt_finishconfig(xpt_periph, work_ccb);
6957 xpt_uncount_bus(bus);
6964 * Now that interrupts are enabled, go find our devices.
6966 * This hook function is called once by run_interrupt_driven_config_hooks().
6967 * XPT is expected to disestablish its hook when done.
6970 xpt_config(void *arg)
6974 /* Setup debugging flags and path */
6975 #ifdef CAM_DEBUG_FLAGS
6976 cam_dflags = CAM_DEBUG_FLAGS;
6977 #else /* !CAM_DEBUG_FLAGS */
6978 cam_dflags = CAM_DEBUG_NONE;
6979 #endif /* CAM_DEBUG_FLAGS */
6980 #ifdef CAM_DEBUG_BUS
6981 if (cam_dflags != CAM_DEBUG_NONE) {
6983 * Locking is specifically omitted here. No SIMs have
6984 * registered yet, so xpt_create_path will only be searching
6985 * empty lists of targets and devices.
6987 if (xpt_create_path(&cam_dpath, xpt_periph,
6988 CAM_DEBUG_BUS, CAM_DEBUG_TARGET,
6989 CAM_DEBUG_LUN) != CAM_REQ_CMP) {
6990 kprintf("xpt_config: xpt_create_path() failed for debug"
6991 " target %d:%d:%d, debugging disabled\n",
6992 CAM_DEBUG_BUS, CAM_DEBUG_TARGET, CAM_DEBUG_LUN);
6993 cam_dflags = CAM_DEBUG_NONE;
6998 #else /* !CAM_DEBUG_BUS */
7000 #endif /* CAM_DEBUG_BUS */
7001 #endif /* CAMDEBUG */
7004 * Scan all installed busses. This will also add a count
7005 * for our dummy placeholder (xpt_periph).
7007 xpt_for_all_busses(xptconfigbuscountfunc, NULL);
7009 kprintf("CAM: Configuring %d busses\n", busses_to_config - 1);
7010 if (busses_to_reset > 0 && scsi_delay >= 2000) {
7011 kprintf("Waiting %d seconds for SCSI "
7012 "devices to settle\n",
7015 xpt_for_all_busses(xptconfigfunc, NULL);
7019 * If the given device only has one peripheral attached to it, and if that
7020 * peripheral is the passthrough driver, announce it. This insures that the
7021 * user sees some sort of announcement for every peripheral in their system.
7024 xptpassannouncefunc(struct cam_ed *device, void *arg)
7026 struct cam_periph *periph;
7029 for (periph = SLIST_FIRST(&device->periphs), i = 0; periph != NULL;
7030 periph = SLIST_NEXT(periph, periph_links), i++);
7032 periph = SLIST_FIRST(&device->periphs);
7034 && (strncmp(periph->periph_name, "pass", 4) == 0))
7035 xpt_announce_periph(periph, NULL);
7041 xpt_finishconfig_task(void *context, int pending)
7043 struct periph_driver **p_drv;
7046 kprintf("CAM: finished configuring all busses\n");
7048 if (busses_to_config == 0) {
7049 /* Register all the peripheral drivers */
7050 /* XXX This will have to change when we have loadable modules */
7051 p_drv = periph_drivers;
7052 for (i = 0; p_drv[i] != NULL; i++) {
7053 (*p_drv[i]->init)();
7057 * Check for devices with no "standard" peripheral driver
7058 * attached. For any devices like that, announce the
7059 * passthrough driver so the user will see something.
7061 xpt_for_all_devices(xptpassannouncefunc, NULL);
7063 /* Release our hook so that the boot can continue. */
7064 config_intrhook_disestablish(xsoftc.xpt_config_hook);
7065 kfree(xsoftc.xpt_config_hook, M_CAMXPT);
7066 xsoftc.xpt_config_hook = NULL;
7068 kfree(context, M_CAMXPT);
7072 xpt_uncount_bus (struct cam_eb *bus)
7074 struct xpt_task *task;
7076 if (bus->counted_to_config) {
7077 bus->counted_to_config = 0;
7078 if (atomic_fetchadd_int(&busses_to_config, -1) == 1) {
7079 task = kmalloc(sizeof(struct xpt_task), M_CAMXPT,
7080 M_INTWAIT | M_ZERO);
7081 TASK_INIT(&task->task, 0, xpt_finishconfig_task, task);
7082 taskqueue_enqueue(taskqueue_thread[mycpuid],
7089 xpt_finishconfig(struct cam_periph *periph, union ccb *done_ccb)
7091 struct cam_path *path;
7093 path = done_ccb->ccb_h.path;
7094 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_finishconfig\n"));
7096 switch(done_ccb->ccb_h.func_code) {
7098 if (done_ccb->ccb_h.status == CAM_REQ_CMP) {
7099 done_ccb->ccb_h.func_code = XPT_SCAN_BUS;
7100 done_ccb->ccb_h.cbfcnp = xpt_finishconfig;
7101 done_ccb->crcn.flags = 0;
7102 xpt_action(done_ccb);
7109 kprintf("CAM: Finished configuring bus:");
7110 if (path->bus->sim) {
7112 path->bus->sim->sim_name,
7113 path->bus->sim->unit_number);
7115 kprintf(" (unknown)\n");
7118 xpt_uncount_bus(path->bus);
7119 xpt_free_path(path);
7120 xpt_free_ccb(done_ccb);
7126 xpt_register_async(int event, ac_callback_t *cbfunc, void *cbarg,
7127 struct cam_path *path)
7129 struct ccb_setasync csa;
7134 lockmgr(&xsoftc.xpt_lock, LK_EXCLUSIVE);
7135 status = xpt_create_path(&path, /*periph*/NULL, CAM_XPT_PATH_ID,
7136 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
7137 if (status != CAM_REQ_CMP) {
7138 lockmgr(&xsoftc.xpt_lock, LK_RELEASE);
7144 xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
7145 csa.ccb_h.func_code = XPT_SASYNC_CB;
7146 csa.event_enable = event;
7147 csa.callback = cbfunc;
7148 csa.callback_arg = cbarg;
7149 xpt_action((union ccb *)&csa);
7150 status = csa.ccb_h.status;
7152 xpt_free_path(path);
7153 lockmgr(&xsoftc.xpt_lock, LK_RELEASE);
7159 xptaction(struct cam_sim *sim, union ccb *work_ccb)
7161 CAM_DEBUG(work_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("xptaction\n"));
7163 switch (work_ccb->ccb_h.func_code) {
7164 /* Common cases first */
7165 case XPT_PATH_INQ: /* Path routing inquiry */
7167 struct ccb_pathinq *cpi;
7169 cpi = &work_ccb->cpi;
7170 cpi->version_num = 1; /* XXX??? */
7171 cpi->hba_inquiry = 0;
7172 cpi->target_sprt = 0;
7174 cpi->hba_eng_cnt = 0;
7175 cpi->max_target = 0;
7177 cpi->initiator_id = 0;
7178 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
7179 strncpy(cpi->hba_vid, "", HBA_IDLEN);
7180 strncpy(cpi->dev_name, sim->sim_name, DEV_IDLEN);
7181 cpi->unit_number = sim->unit_number;
7182 cpi->bus_id = sim->bus_id;
7183 cpi->base_transfer_speed = 0;
7184 cpi->protocol = PROTO_UNSPECIFIED;
7185 cpi->protocol_version = PROTO_VERSION_UNSPECIFIED;
7186 cpi->transport = XPORT_UNSPECIFIED;
7187 cpi->transport_version = XPORT_VERSION_UNSPECIFIED;
7188 cpi->ccb_h.status = CAM_REQ_CMP;
7193 work_ccb->ccb_h.status = CAM_REQ_INVALID;
7200 * The xpt as a "controller" has no interrupt sources, so polling
7204 xptpoll(struct cam_sim *sim)
7209 xpt_lock_buses(void)
7211 lockmgr(&xsoftc.xpt_topo_lock, LK_EXCLUSIVE);
7215 xpt_unlock_buses(void)
7217 lockmgr(&xsoftc.xpt_topo_lock, LK_RELEASE);
7222 * Should only be called by the machine interrupt dispatch routines,
7223 * so put these prototypes here instead of in the header.
7227 swi_cambio(void *arg, void *frame)
7236 struct cam_sim *sim;
7238 spin_lock(&cam_simq_spin);
7240 TAILQ_CONCAT(&queue, &cam_simq, links);
7241 spin_unlock(&cam_simq_spin);
7243 while ((sim = TAILQ_FIRST(&queue)) != NULL) {
7244 TAILQ_REMOVE(&queue, sim, links);
7246 sim->flags &= ~CAM_SIM_ON_DONEQ;
7247 camisr_runqueue(sim);
7248 CAM_SIM_UNLOCK(sim);
7253 camisr_runqueue(struct cam_sim *sim)
7255 struct ccb_hdr *ccb_h;
7258 spin_lock(&sim->sim_spin);
7259 while ((ccb_h = TAILQ_FIRST(&sim->sim_doneq)) != NULL) {
7260 TAILQ_REMOVE(&sim->sim_doneq, ccb_h, sim_links.tqe);
7261 spin_unlock(&sim->sim_spin);
7262 ccb_h->pinfo.index = CAM_UNQUEUED_INDEX;
7264 CAM_DEBUG(ccb_h->path, CAM_DEBUG_TRACE,
7269 if (ccb_h->flags & CAM_HIGH_POWER) {
7270 struct highpowerlist *hphead;
7271 struct cam_ed *device;
7272 union ccb *send_ccb;
7274 lockmgr(&xsoftc.xpt_lock, LK_EXCLUSIVE);
7275 hphead = &xsoftc.highpowerq;
7277 send_ccb = (union ccb *)STAILQ_FIRST(hphead);
7280 * Increment the count since this command is done.
7282 xsoftc.num_highpower++;
7285 * Any high powered commands queued up?
7287 if (send_ccb != NULL) {
7288 device = send_ccb->ccb_h.path->device;
7290 STAILQ_REMOVE_HEAD(hphead, xpt_links.stqe);
7291 lockmgr(&xsoftc.xpt_lock, LK_RELEASE);
7293 xpt_release_devq(send_ccb->ccb_h.path,
7294 /*count*/1, /*runqueue*/TRUE);
7296 lockmgr(&xsoftc.xpt_lock, LK_RELEASE);
7299 if ((ccb_h->func_code & XPT_FC_USER_CCB) == 0) {
7302 dev = ccb_h->path->device;
7304 cam_ccbq_ccb_done(&dev->ccbq, (union ccb *)ccb_h);
7307 * devq may be NULL if this is cam_dead_sim
7309 if (ccb_h->path->bus->sim->devq) {
7310 ccb_h->path->bus->sim->devq->send_active--;
7311 ccb_h->path->bus->sim->devq->send_openings++;
7314 if (((dev->flags & CAM_DEV_REL_ON_COMPLETE) != 0
7315 && (ccb_h->status&CAM_STATUS_MASK) != CAM_REQUEUE_REQ)
7316 || ((dev->flags & CAM_DEV_REL_ON_QUEUE_EMPTY) != 0
7317 && (dev->ccbq.dev_active == 0))) {
7319 xpt_release_devq(ccb_h->path, /*count*/1,
7323 if ((dev->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
7324 && (--dev->tag_delay_count == 0))
7325 xpt_start_tags(ccb_h->path);
7327 if ((dev->ccbq.queue.entries > 0)
7328 && (dev->qfrozen_cnt == 0)
7329 && (device_is_send_queued(dev) == 0)) {
7330 runq = xpt_schedule_dev_sendq(ccb_h->path->bus,
7335 if (ccb_h->status & CAM_RELEASE_SIMQ) {
7336 xpt_release_simq(ccb_h->path->bus->sim,
7338 ccb_h->status &= ~CAM_RELEASE_SIMQ;
7342 if ((ccb_h->flags & CAM_DEV_QFRZDIS)
7343 && (ccb_h->status & CAM_DEV_QFRZN)) {
7344 xpt_release_devq(ccb_h->path, /*count*/1,
7346 ccb_h->status &= ~CAM_DEV_QFRZN;
7348 xpt_run_dev_sendq(ccb_h->path->bus);
7351 /* Call the peripheral driver's callback */
7352 (*ccb_h->cbfcnp)(ccb_h->path->periph, (union ccb *)ccb_h);
7353 spin_lock(&sim->sim_spin);
7355 spin_unlock(&sim->sim_spin);
7359 * The dead_sim isn't completely hooked into CAM, we have to make sure
7360 * the doneq is cleared after calling xpt_done() so cam_periph_ccbwait()
7364 dead_sim_action(struct cam_sim *sim, union ccb *ccb)
7367 ccb->ccb_h.status = CAM_DEV_NOT_THERE;
7369 camisr_runqueue(sim);
7373 dead_sim_poll(struct cam_sim *sim)