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
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
33 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/types.h>
37 #include <sys/malloc.h>
38 #include <sys/kernel.h>
41 #include <sys/fcntl.h>
43 #include <sys/interrupt.h>
45 #include <sys/taskqueue.h>
48 #include <sys/mutex.h>
49 #include <sys/sysctl.h>
50 #include <sys/kthread.h>
53 #include <pc98/pc98/pc98_machdep.h> /* geometry translation */
57 #include <cam/cam_ccb.h>
58 #include <cam/cam_periph.h>
59 #include <cam/cam_sim.h>
60 #include <cam/cam_xpt.h>
61 #include <cam/cam_xpt_sim.h>
62 #include <cam/cam_xpt_periph.h>
63 #include <cam/cam_debug.h>
65 #include <cam/scsi/scsi_all.h>
66 #include <cam/scsi/scsi_message.h>
67 #include <cam/scsi/scsi_pass.h>
68 #include <machine/stdarg.h> /* for xpt_print below */
71 /* Datastructures internal to the xpt layer */
72 MALLOC_DEFINE(M_CAMXPT, "CAM XPT", "CAM XPT buffers");
74 /* Object for defering XPT actions to a taskqueue */
82 * Definition of an async handler callback block. These are used to add
83 * SIMs and peripherals to the async callback lists.
86 SLIST_ENTRY(async_node) links;
87 u_int32_t event_enable; /* Async Event enables */
88 void (*callback)(void *arg, u_int32_t code,
89 struct cam_path *path, void *args);
93 SLIST_HEAD(async_list, async_node);
94 SLIST_HEAD(periph_list, cam_periph);
97 * This is the maximum number of high powered commands (e.g. start unit)
98 * that can be outstanding at a particular time.
100 #ifndef CAM_MAX_HIGHPOWER
101 #define CAM_MAX_HIGHPOWER 4
105 * Structure for queueing a device in a run queue.
106 * There is one run queue for allocating new ccbs,
107 * and another for sending ccbs to the controller.
109 struct cam_ed_qinfo {
111 struct cam_ed *device;
115 * The CAM EDT (Existing Device Table) contains the device information for
116 * all devices for all busses in the system. The table contains a
117 * cam_ed structure for each device on the bus.
120 TAILQ_ENTRY(cam_ed) links;
121 struct cam_ed_qinfo alloc_ccb_entry;
122 struct cam_ed_qinfo send_ccb_entry;
123 struct cam_et *target;
127 * Queue of type drivers wanting to do
128 * work on this device.
130 struct cam_ccbq ccbq; /* Queue of pending ccbs */
131 struct async_list asyncs; /* Async callback info for this B/T/L */
132 struct periph_list periphs; /* All attached devices */
133 u_int generation; /* Generation number */
134 struct cam_periph *owner; /* Peripheral driver's ownership tag */
135 struct xpt_quirk_entry *quirk; /* Oddities about this device */
136 /* Storage for the inquiry data */
138 u_int protocol_version;
140 u_int transport_version;
141 struct scsi_inquiry_data inq_data;
142 u_int8_t inq_flags; /*
143 * Current settings for inquiry flags.
144 * This allows us to override settings
145 * like disconnection and tagged
146 * queuing for a device.
148 u_int8_t queue_flags; /* Queue flags from the control page */
149 u_int8_t serial_num_len;
150 u_int8_t *serial_num;
151 u_int32_t qfrozen_cnt;
153 #define CAM_DEV_UNCONFIGURED 0x01
154 #define CAM_DEV_REL_TIMEOUT_PENDING 0x02
155 #define CAM_DEV_REL_ON_COMPLETE 0x04
156 #define CAM_DEV_REL_ON_QUEUE_EMPTY 0x08
157 #define CAM_DEV_RESIZE_QUEUE_NEEDED 0x10
158 #define CAM_DEV_TAG_AFTER_COUNT 0x20
159 #define CAM_DEV_INQUIRY_DATA_VALID 0x40
160 #define CAM_DEV_IN_DV 0x80
161 #define CAM_DEV_DV_HIT_BOTTOM 0x100
162 u_int32_t tag_delay_count;
163 #define CAM_TAG_DELAY_COUNT 5
164 u_int32_t tag_saved_openings;
166 struct callout callout;
170 * Each target is represented by an ET (Existing Target). These
171 * entries are created when a target is successfully probed with an
172 * identify, and removed when a device fails to respond after a number
173 * of retries, or a bus rescan finds the device missing.
176 TAILQ_HEAD(, cam_ed) ed_entries;
177 TAILQ_ENTRY(cam_et) links;
179 target_id_t target_id;
182 struct timeval last_reset;
186 * Each bus is represented by an EB (Existing Bus). These entries
187 * are created by calls to xpt_bus_register and deleted by calls to
188 * xpt_bus_deregister.
191 TAILQ_HEAD(, cam_et) et_entries;
192 TAILQ_ENTRY(cam_eb) links;
195 struct timeval last_reset;
197 #define CAM_EB_RUNQ_SCHEDULED 0x01
204 struct cam_periph *periph;
206 struct cam_et *target;
207 struct cam_ed *device;
210 struct xpt_quirk_entry {
211 struct scsi_inquiry_pattern inq_pat;
213 #define CAM_QUIRK_NOLUNS 0x01
214 #define CAM_QUIRK_NOSERIAL 0x02
215 #define CAM_QUIRK_HILUNS 0x04
216 #define CAM_QUIRK_NOHILUNS 0x08
221 static int cam_srch_hi = 0;
222 TUNABLE_INT("kern.cam.cam_srch_hi", &cam_srch_hi);
223 static int sysctl_cam_search_luns(SYSCTL_HANDLER_ARGS);
224 SYSCTL_PROC(_kern_cam, OID_AUTO, cam_srch_hi, CTLTYPE_INT|CTLFLAG_RW, 0, 0,
225 sysctl_cam_search_luns, "I",
226 "allow search above LUN 7 for SCSI3 and greater devices");
228 #define CAM_SCSI2_MAXLUN 8
230 * If we're not quirked to search <= the first 8 luns
231 * and we are either quirked to search above lun 8,
232 * or we're > SCSI-2 and we've enabled hilun searching,
233 * or we're > SCSI-2 and the last lun was a success,
234 * we can look for luns above lun 8.
236 #define CAN_SRCH_HI_SPARSE(dv) \
237 (((dv->quirk->quirks & CAM_QUIRK_NOHILUNS) == 0) \
238 && ((dv->quirk->quirks & CAM_QUIRK_HILUNS) \
239 || (SID_ANSI_REV(&dv->inq_data) > SCSI_REV_2 && cam_srch_hi)))
241 #define CAN_SRCH_HI_DENSE(dv) \
242 (((dv->quirk->quirks & CAM_QUIRK_NOHILUNS) == 0) \
243 && ((dv->quirk->quirks & CAM_QUIRK_HILUNS) \
244 || (SID_ANSI_REV(&dv->inq_data) > SCSI_REV_2)))
252 u_int32_t xpt_generation;
254 /* number of high powered commands that can go through right now */
255 STAILQ_HEAD(highpowerlist, ccb_hdr) highpowerq;
258 /* queue for handling async rescan requests. */
259 TAILQ_HEAD(, ccb_hdr) ccb_scanq;
261 /* Registered busses */
262 TAILQ_HEAD(,cam_eb) xpt_busses;
263 u_int bus_generation;
265 struct intr_config_hook *xpt_config_hook;
267 struct mtx xpt_topo_lock;
271 static const char quantum[] = "QUANTUM";
272 static const char sony[] = "SONY";
273 static const char west_digital[] = "WDIGTL";
274 static const char samsung[] = "SAMSUNG";
275 static const char seagate[] = "SEAGATE";
276 static const char microp[] = "MICROP";
278 static struct xpt_quirk_entry xpt_quirk_table[] =
281 /* Reports QUEUE FULL for temporary resource shortages */
282 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP39100*", "*" },
283 /*quirks*/0, /*mintags*/24, /*maxtags*/32
286 /* Reports QUEUE FULL for temporary resource shortages */
287 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP34550*", "*" },
288 /*quirks*/0, /*mintags*/24, /*maxtags*/32
291 /* Reports QUEUE FULL for temporary resource shortages */
292 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP32275*", "*" },
293 /*quirks*/0, /*mintags*/24, /*maxtags*/32
296 /* Broken tagged queuing drive */
297 { T_DIRECT, SIP_MEDIA_FIXED, microp, "4421-07*", "*" },
298 /*quirks*/0, /*mintags*/0, /*maxtags*/0
301 /* Broken tagged queuing drive */
302 { T_DIRECT, SIP_MEDIA_FIXED, "HP", "C372*", "*" },
303 /*quirks*/0, /*mintags*/0, /*maxtags*/0
306 /* Broken tagged queuing drive */
307 { T_DIRECT, SIP_MEDIA_FIXED, microp, "3391*", "x43h" },
308 /*quirks*/0, /*mintags*/0, /*maxtags*/0
312 * Unfortunately, the Quantum Atlas III has the same
313 * problem as the Atlas II drives above.
314 * Reported by: "Johan Granlund" <johan@granlund.nu>
316 * For future reference, the drive with the problem was:
317 * QUANTUM QM39100TD-SW N1B0
319 * It's possible that Quantum will fix the problem in later
320 * firmware revisions. If that happens, the quirk entry
321 * will need to be made specific to the firmware revisions
325 /* Reports QUEUE FULL for temporary resource shortages */
326 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "QM39100*", "*" },
327 /*quirks*/0, /*mintags*/24, /*maxtags*/32
331 * 18 Gig Atlas III, same problem as the 9G version.
332 * Reported by: Andre Albsmeier
333 * <andre.albsmeier@mchp.siemens.de>
335 * For future reference, the drive with the problem was:
336 * QUANTUM QM318000TD-S N491
338 /* Reports QUEUE FULL for temporary resource shortages */
339 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "QM318000*", "*" },
340 /*quirks*/0, /*mintags*/24, /*maxtags*/32
344 * Broken tagged queuing drive
345 * Reported by: Bret Ford <bford@uop.cs.uop.edu>
346 * and: Martin Renters <martin@tdc.on.ca>
348 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST410800*", "71*" },
349 /*quirks*/0, /*mintags*/0, /*maxtags*/0
352 * The Seagate Medalist Pro drives have very poor write
353 * performance with anything more than 2 tags.
355 * Reported by: Paul van der Zwan <paulz@trantor.xs4all.nl>
356 * Drive: <SEAGATE ST36530N 1444>
358 * Reported by: Jeremy Lea <reg@shale.csir.co.za>
359 * Drive: <SEAGATE ST34520W 1281>
361 * No one has actually reported that the 9G version
362 * (ST39140*) of the Medalist Pro has the same problem, but
363 * we're assuming that it does because the 4G and 6.5G
364 * versions of the drive are broken.
367 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST34520*", "*"},
368 /*quirks*/0, /*mintags*/2, /*maxtags*/2
371 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST36530*", "*"},
372 /*quirks*/0, /*mintags*/2, /*maxtags*/2
375 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST39140*", "*"},
376 /*quirks*/0, /*mintags*/2, /*maxtags*/2
380 * Slow when tagged queueing is enabled. Write performance
381 * steadily drops off with more and more concurrent
382 * transactions. Best sequential write performance with
383 * tagged queueing turned off and write caching turned on.
386 * Submitted by: Hideaki Okada <hokada@isl.melco.co.jp>
387 * Drive: DCAS-34330 w/ "S65A" firmware.
389 * The drive with the problem had the "S65A" firmware
390 * revision, and has also been reported (by Stephen J.
391 * Roznowski <sjr@home.net>) for a drive with the "S61A"
394 * Although no one has reported problems with the 2 gig
395 * version of the DCAS drive, the assumption is that it
396 * has the same problems as the 4 gig version. Therefore
397 * this quirk entries disables tagged queueing for all
400 { T_DIRECT, SIP_MEDIA_FIXED, "IBM", "DCAS*", "*" },
401 /*quirks*/0, /*mintags*/0, /*maxtags*/0
404 /* Broken tagged queuing drive */
405 { T_DIRECT, SIP_MEDIA_REMOVABLE, "iomega", "jaz*", "*" },
406 /*quirks*/0, /*mintags*/0, /*maxtags*/0
409 /* Broken tagged queuing drive */
410 { T_DIRECT, SIP_MEDIA_FIXED, "CONNER", "CFP2107*", "*" },
411 /*quirks*/0, /*mintags*/0, /*maxtags*/0
414 /* This does not support other than LUN 0 */
415 { T_DIRECT, SIP_MEDIA_FIXED, "VMware*", "*", "*" },
416 CAM_QUIRK_NOLUNS, /*mintags*/2, /*maxtags*/255
420 * Broken tagged queuing drive.
422 * NAKAJI Hiroyuki <nakaji@zeisei.dpri.kyoto-u.ac.jp>
425 { T_DIRECT, SIP_MEDIA_FIXED, samsung, "WN34324U*", "*" },
426 /*quirks*/0, /*mintags*/0, /*maxtags*/0
430 * Slow when tagged queueing is enabled. (1.5MB/sec versus
432 * Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
433 * Best performance with these drives is achieved with
434 * tagged queueing turned off, and write caching turned on.
436 { T_DIRECT, SIP_MEDIA_FIXED, west_digital, "WDE*", "*" },
437 /*quirks*/0, /*mintags*/0, /*maxtags*/0
441 * Slow when tagged queueing is enabled. (1.5MB/sec versus
443 * Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
444 * Best performance with these drives is achieved with
445 * tagged queueing turned off, and write caching turned on.
447 { T_DIRECT, SIP_MEDIA_FIXED, west_digital, "ENTERPRISE", "*" },
448 /*quirks*/0, /*mintags*/0, /*maxtags*/0
452 * Doesn't handle queue full condition correctly,
453 * so we need to limit maxtags to what the device
454 * can handle instead of determining this automatically.
456 { T_DIRECT, SIP_MEDIA_FIXED, samsung, "WN321010S*", "*" },
457 /*quirks*/0, /*mintags*/2, /*maxtags*/32
460 /* Really only one LUN */
461 { T_ENCLOSURE, SIP_MEDIA_FIXED, "SUN", "SENA", "*" },
462 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
465 /* I can't believe we need a quirk for DPT volumes. */
466 { T_ANY, SIP_MEDIA_FIXED|SIP_MEDIA_REMOVABLE, "DPT", "*", "*" },
468 /*mintags*/0, /*maxtags*/255
472 * Many Sony CDROM drives don't like multi-LUN probing.
474 { T_CDROM, SIP_MEDIA_REMOVABLE, sony, "CD-ROM CDU*", "*" },
475 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
479 * This drive doesn't like multiple LUN probing.
480 * Submitted by: Parag Patel <parag@cgt.com>
482 { T_WORM, SIP_MEDIA_REMOVABLE, sony, "CD-R CDU9*", "*" },
483 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
486 { T_WORM, SIP_MEDIA_REMOVABLE, "YAMAHA", "CDR100*", "*" },
487 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
491 * The 8200 doesn't like multi-lun probing, and probably
492 * don't like serial number requests either.
495 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "EXABYTE",
498 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
502 * Let's try the same as above, but for a drive that says
503 * it's an IPL-6860 but is actually an EXB 8200.
506 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "EXABYTE",
509 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
513 * These Hitachi drives don't like multi-lun probing.
514 * The PR submitter has a DK319H, but says that the Linux
515 * kernel has a similar work-around for the DK312 and DK314,
516 * so all DK31* drives are quirked here.
518 * Submitted by: Paul Haddad <paul@pth.com>
520 { T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "DK31*", "*" },
521 CAM_QUIRK_NOLUNS, /*mintags*/2, /*maxtags*/255
525 * The Hitachi CJ series with J8A8 firmware apparantly has
526 * problems with tagged commands.
528 * Reported by: amagai@nue.org
530 { T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "DK32CJ*", "J8A8" },
531 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
535 * These are the large storage arrays.
536 * Submitted by: William Carrel <william.carrel@infospace.com>
538 { T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "OPEN*", "*" },
539 CAM_QUIRK_HILUNS, 2, 1024
543 * This old revision of the TDC3600 is also SCSI-1, and
544 * hangs upon serial number probing.
547 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
550 CAM_QUIRK_NOSERIAL, /*mintags*/0, /*maxtags*/0
554 * Would repond to all LUNs if asked for.
557 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "CALIPER",
560 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
564 * Would repond to all LUNs if asked for.
567 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY",
570 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
573 /* Submitted by: Matthew Dodd <winter@jurai.net> */
574 { T_PROCESSOR, SIP_MEDIA_FIXED, "Cabletrn", "EA41*", "*" },
575 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
578 /* Submitted by: Matthew Dodd <winter@jurai.net> */
579 { T_PROCESSOR, SIP_MEDIA_FIXED, "CABLETRN", "EA41*", "*" },
580 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
583 /* TeraSolutions special settings for TRC-22 RAID */
584 { T_DIRECT, SIP_MEDIA_FIXED, "TERASOLU", "TRC-22", "*" },
585 /*quirks*/0, /*mintags*/55, /*maxtags*/255
588 /* Veritas Storage Appliance */
589 { T_DIRECT, SIP_MEDIA_FIXED, "VERITAS", "*", "*" },
590 CAM_QUIRK_HILUNS, /*mintags*/2, /*maxtags*/1024
594 * Would respond to all LUNs. Device type and removable
595 * flag are jumper-selectable.
597 { T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED, "MaxOptix",
600 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
603 /* EasyRAID E5A aka. areca ARC-6010 */
604 { T_DIRECT, SIP_MEDIA_FIXED, "easyRAID", "*", "*" },
605 CAM_QUIRK_NOHILUNS, /*mintags*/2, /*maxtags*/255
608 { T_ENCLOSURE, SIP_MEDIA_FIXED, "DP", "BACKPLANE", "*" },
609 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
612 /* Default tagged queuing parameters for all devices */
614 T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED,
615 /*vendor*/"*", /*product*/"*", /*revision*/"*"
617 /*quirks*/0, /*mintags*/2, /*maxtags*/255
621 static const int xpt_quirk_table_size =
622 sizeof(xpt_quirk_table) / sizeof(*xpt_quirk_table);
626 DM_RET_FLAG_MASK = 0x0f,
629 DM_RET_DESCEND = 0x20,
631 DM_RET_ACTION_MASK = 0xf0
639 } xpt_traverse_depth;
641 struct xpt_traverse_config {
642 xpt_traverse_depth depth;
647 typedef int xpt_busfunc_t (struct cam_eb *bus, void *arg);
648 typedef int xpt_targetfunc_t (struct cam_et *target, void *arg);
649 typedef int xpt_devicefunc_t (struct cam_ed *device, void *arg);
650 typedef int xpt_periphfunc_t (struct cam_periph *periph, void *arg);
651 typedef int xpt_pdrvfunc_t (struct periph_driver **pdrv, void *arg);
653 /* Transport layer configuration information */
654 static struct xpt_softc xsoftc;
656 /* Queues for our software interrupt handler */
657 typedef TAILQ_HEAD(cam_isrq, ccb_hdr) cam_isrq_t;
658 typedef TAILQ_HEAD(cam_simq, cam_sim) cam_simq_t;
659 static cam_simq_t cam_simq;
660 static struct mtx cam_simq_lock;
662 /* Pointers to software interrupt handlers */
663 static void *cambio_ih;
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);
687 static d_open_t xptopen;
688 static d_close_t xptclose;
689 static d_ioctl_t xptioctl;
691 static struct cdevsw xpt_cdevsw = {
692 .d_version = D_VERSION,
701 /* Storage for debugging datastructures */
703 struct cam_path *cam_dpath;
704 u_int32_t cam_dflags;
705 u_int32_t cam_debug_delay;
708 #if defined(CAM_DEBUG_FLAGS) && !defined(CAMDEBUG)
709 #error "You must have options CAMDEBUG to use options CAM_DEBUG_FLAGS"
713 * In order to enable the CAM_DEBUG_* options, the user must have CAMDEBUG
714 * enabled. Also, the user must have either none, or all of CAM_DEBUG_BUS,
715 * CAM_DEBUG_TARGET, and CAM_DEBUG_LUN specified.
717 #if defined(CAM_DEBUG_BUS) || defined(CAM_DEBUG_TARGET) \
718 || defined(CAM_DEBUG_LUN)
720 #if !defined(CAM_DEBUG_BUS) || !defined(CAM_DEBUG_TARGET) \
721 || !defined(CAM_DEBUG_LUN)
722 #error "You must define all or none of CAM_DEBUG_BUS, CAM_DEBUG_TARGET \
724 #endif /* !CAM_DEBUG_BUS || !CAM_DEBUG_TARGET || !CAM_DEBUG_LUN */
725 #else /* !CAMDEBUG */
726 #error "You must use options CAMDEBUG if you use the CAM_DEBUG_* options"
727 #endif /* CAMDEBUG */
728 #endif /* CAM_DEBUG_BUS || CAM_DEBUG_TARGET || CAM_DEBUG_LUN */
730 /* Our boot-time initialization hook */
731 static int cam_module_event_handler(module_t, int /*modeventtype_t*/, void *);
733 static moduledata_t cam_moduledata = {
735 cam_module_event_handler,
739 static int xpt_init(void *);
741 DECLARE_MODULE(cam, cam_moduledata, SI_SUB_CONFIGURE, SI_ORDER_SECOND);
742 MODULE_VERSION(cam, 1);
745 static cam_status xpt_compile_path(struct cam_path *new_path,
746 struct cam_periph *perph,
748 target_id_t target_id,
751 static void xpt_release_path(struct cam_path *path);
753 static void xpt_async_bcast(struct async_list *async_head,
754 u_int32_t async_code,
755 struct cam_path *path,
757 static void xpt_dev_async(u_int32_t async_code,
759 struct cam_et *target,
760 struct cam_ed *device,
762 static path_id_t xptnextfreepathid(void);
763 static path_id_t xptpathid(const char *sim_name, int sim_unit, int sim_bus);
764 static union ccb *xpt_get_ccb(struct cam_ed *device);
765 static int xpt_schedule_dev(struct camq *queue, cam_pinfo *dev_pinfo,
766 u_int32_t new_priority);
767 static void xpt_run_dev_allocq(struct cam_eb *bus);
768 static void xpt_run_dev_sendq(struct cam_eb *bus);
769 static timeout_t xpt_release_devq_timeout;
770 static void xpt_release_simq_timeout(void *arg) __unused;
771 static void xpt_release_bus(struct cam_eb *bus);
772 static void xpt_release_devq_device(struct cam_ed *dev, u_int count,
774 static struct cam_et*
775 xpt_alloc_target(struct cam_eb *bus, target_id_t target_id);
776 static void xpt_release_target(struct cam_eb *bus, struct cam_et *target);
777 static struct cam_ed*
778 xpt_alloc_device(struct cam_eb *bus, struct cam_et *target,
780 static void xpt_release_device(struct cam_eb *bus, struct cam_et *target,
781 struct cam_ed *device);
782 static u_int32_t xpt_dev_ccbq_resize(struct cam_path *path, int newopenings);
783 static struct cam_eb*
784 xpt_find_bus(path_id_t path_id);
785 static struct cam_et*
786 xpt_find_target(struct cam_eb *bus, target_id_t target_id);
787 static struct cam_ed*
788 xpt_find_device(struct cam_et *target, lun_id_t lun_id);
789 static void xpt_scan_bus(struct cam_periph *periph, union ccb *ccb);
790 static void xpt_scan_lun(struct cam_periph *periph,
791 struct cam_path *path, cam_flags flags,
793 static void xptscandone(struct cam_periph *periph, union ccb *done_ccb);
794 static xpt_busfunc_t xptconfigbuscountfunc;
795 static xpt_busfunc_t xptconfigfunc;
796 static void xpt_config(void *arg);
797 static xpt_devicefunc_t xptpassannouncefunc;
798 static void xpt_finishconfig(struct cam_periph *periph, union ccb *ccb);
799 static void xptaction(struct cam_sim *sim, union ccb *work_ccb);
800 static void xptpoll(struct cam_sim *sim);
801 static void camisr(void *);
802 static void camisr_runqueue(void *);
803 static dev_match_ret xptbusmatch(struct dev_match_pattern *patterns,
804 u_int num_patterns, struct cam_eb *bus);
805 static dev_match_ret xptdevicematch(struct dev_match_pattern *patterns,
807 struct cam_ed *device);
808 static dev_match_ret xptperiphmatch(struct dev_match_pattern *patterns,
810 struct cam_periph *periph);
811 static xpt_busfunc_t xptedtbusfunc;
812 static xpt_targetfunc_t xptedttargetfunc;
813 static xpt_devicefunc_t xptedtdevicefunc;
814 static xpt_periphfunc_t xptedtperiphfunc;
815 static xpt_pdrvfunc_t xptplistpdrvfunc;
816 static xpt_periphfunc_t xptplistperiphfunc;
817 static int xptedtmatch(struct ccb_dev_match *cdm);
818 static int xptperiphlistmatch(struct ccb_dev_match *cdm);
819 static int xptbustraverse(struct cam_eb *start_bus,
820 xpt_busfunc_t *tr_func, void *arg);
821 static int xpttargettraverse(struct cam_eb *bus,
822 struct cam_et *start_target,
823 xpt_targetfunc_t *tr_func, void *arg);
824 static int xptdevicetraverse(struct cam_et *target,
825 struct cam_ed *start_device,
826 xpt_devicefunc_t *tr_func, void *arg);
827 static int xptperiphtraverse(struct cam_ed *device,
828 struct cam_periph *start_periph,
829 xpt_periphfunc_t *tr_func, void *arg);
830 static int xptpdrvtraverse(struct periph_driver **start_pdrv,
831 xpt_pdrvfunc_t *tr_func, void *arg);
832 static int xptpdperiphtraverse(struct periph_driver **pdrv,
833 struct cam_periph *start_periph,
834 xpt_periphfunc_t *tr_func,
836 static xpt_busfunc_t xptdefbusfunc;
837 static xpt_targetfunc_t xptdeftargetfunc;
838 static xpt_devicefunc_t xptdefdevicefunc;
839 static xpt_periphfunc_t xptdefperiphfunc;
840 static int xpt_for_all_busses(xpt_busfunc_t *tr_func, void *arg);
841 static int xpt_for_all_devices(xpt_devicefunc_t *tr_func,
843 static xpt_devicefunc_t xptsetasyncfunc;
844 static xpt_busfunc_t xptsetasyncbusfunc;
845 static cam_status xptregister(struct cam_periph *periph,
847 static cam_status proberegister(struct cam_periph *periph,
849 static void probeschedule(struct cam_periph *probe_periph);
850 static void probestart(struct cam_periph *periph, union ccb *start_ccb);
851 static void proberequestdefaultnegotiation(struct cam_periph *periph);
852 static int proberequestbackoff(struct cam_periph *periph,
853 struct cam_ed *device);
854 static void probedone(struct cam_periph *periph, union ccb *done_ccb);
855 static void probecleanup(struct cam_periph *periph);
856 static void xpt_find_quirk(struct cam_ed *device);
857 static void xpt_devise_transport(struct cam_path *path);
858 static void xpt_set_transfer_settings(struct ccb_trans_settings *cts,
859 struct cam_ed *device,
861 static void xpt_toggle_tags(struct cam_path *path);
862 static void xpt_start_tags(struct cam_path *path);
863 static __inline int xpt_schedule_dev_allocq(struct cam_eb *bus,
865 static __inline int xpt_schedule_dev_sendq(struct cam_eb *bus,
867 static __inline int periph_is_queued(struct cam_periph *periph);
868 static __inline int device_is_alloc_queued(struct cam_ed *device);
869 static __inline int device_is_send_queued(struct cam_ed *device);
870 static __inline int dev_allocq_is_runnable(struct cam_devq *devq);
873 xpt_schedule_dev_allocq(struct cam_eb *bus, struct cam_ed *dev)
877 if (dev->ccbq.devq_openings > 0) {
878 if ((dev->flags & CAM_DEV_RESIZE_QUEUE_NEEDED) != 0) {
879 cam_ccbq_resize(&dev->ccbq,
880 dev->ccbq.dev_openings
881 + dev->ccbq.dev_active);
882 dev->flags &= ~CAM_DEV_RESIZE_QUEUE_NEEDED;
885 * The priority of a device waiting for CCB resources
886 * is that of the the highest priority peripheral driver
889 retval = xpt_schedule_dev(&bus->sim->devq->alloc_queue,
890 &dev->alloc_ccb_entry.pinfo,
891 CAMQ_GET_HEAD(&dev->drvq)->priority);
900 xpt_schedule_dev_sendq(struct cam_eb *bus, struct cam_ed *dev)
904 if (dev->ccbq.dev_openings > 0) {
906 * The priority of a device waiting for controller
907 * resources is that of the the highest priority CCB
911 xpt_schedule_dev(&bus->sim->devq->send_queue,
912 &dev->send_ccb_entry.pinfo,
913 CAMQ_GET_HEAD(&dev->ccbq.queue)->priority);
921 periph_is_queued(struct cam_periph *periph)
923 return (periph->pinfo.index != CAM_UNQUEUED_INDEX);
927 device_is_alloc_queued(struct cam_ed *device)
929 return (device->alloc_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX);
933 device_is_send_queued(struct cam_ed *device)
935 return (device->send_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX);
939 dev_allocq_is_runnable(struct cam_devq *devq)
943 * Have space to do more work.
944 * Allowed to do work.
946 return ((devq->alloc_queue.qfrozen_cnt == 0)
947 && (devq->alloc_queue.entries > 0)
948 && (devq->alloc_openings > 0));
954 make_dev(&xpt_cdevsw, 0, UID_ROOT, GID_OPERATOR, 0600, "xpt0");
964 xptdone(struct cam_periph *periph, union ccb *done_ccb)
966 /* Caller will release the CCB */
967 wakeup(&done_ccb->ccb_h.cbfcnp);
971 xptopen(struct cdev *dev, int flags, int fmt, struct thread *td)
975 * Only allow read-write access.
977 if (((flags & FWRITE) == 0) || ((flags & FREAD) == 0))
981 * We don't allow nonblocking access.
983 if ((flags & O_NONBLOCK) != 0) {
984 printf("%s: can't do nonblocking access\n", devtoname(dev));
988 /* Mark ourselves open */
989 mtx_lock(&xsoftc.xpt_lock);
990 xsoftc.flags |= XPT_FLAG_OPEN;
991 mtx_unlock(&xsoftc.xpt_lock);
997 xptclose(struct cdev *dev, int flag, int fmt, struct thread *td)
1000 /* Mark ourselves closed */
1001 mtx_lock(&xsoftc.xpt_lock);
1002 xsoftc.flags &= ~XPT_FLAG_OPEN;
1003 mtx_unlock(&xsoftc.xpt_lock);
1009 * Don't automatically grab the xpt softc lock here even though this is going
1010 * through the xpt device. The xpt device is really just a back door for
1011 * accessing other devices and SIMs, so the right thing to do is to grab
1012 * the appropriate SIM lock once the bus/SIM is located.
1015 xptioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td)
1023 * For the transport layer CAMIOCOMMAND ioctl, we really only want
1024 * to accept CCB types that don't quite make sense to send through a
1025 * passthrough driver. XPT_PATH_INQ is an exception to this, as stated
1028 case CAMIOCOMMAND: {
1033 inccb = (union ccb *)addr;
1035 bus = xpt_find_bus(inccb->ccb_h.path_id);
1041 switch(inccb->ccb_h.func_code) {
1044 if ((inccb->ccb_h.target_id != CAM_TARGET_WILDCARD)
1045 || (inccb->ccb_h.target_lun != CAM_LUN_WILDCARD)) {
1054 ccb = xpt_alloc_ccb();
1056 CAM_SIM_LOCK(bus->sim);
1059 * Create a path using the bus, target, and lun the
1062 if (xpt_create_path(&ccb->ccb_h.path, xpt_periph,
1063 inccb->ccb_h.path_id,
1064 inccb->ccb_h.target_id,
1065 inccb->ccb_h.target_lun) !=
1068 CAM_SIM_UNLOCK(bus->sim);
1072 /* Ensure all of our fields are correct */
1073 xpt_setup_ccb(&ccb->ccb_h, ccb->ccb_h.path,
1074 inccb->ccb_h.pinfo.priority);
1075 xpt_merge_ccb(ccb, inccb);
1076 ccb->ccb_h.cbfcnp = xptdone;
1077 cam_periph_runccb(ccb, NULL, 0, 0, NULL);
1078 bcopy(ccb, inccb, sizeof(union ccb));
1079 xpt_free_path(ccb->ccb_h.path);
1081 CAM_SIM_UNLOCK(bus->sim);
1088 * This is an immediate CCB, so it's okay to
1089 * allocate it on the stack.
1092 CAM_SIM_LOCK(bus->sim);
1095 * Create a path using the bus, target, and lun the
1098 if (xpt_create_path(&ccb.ccb_h.path, xpt_periph,
1099 inccb->ccb_h.path_id,
1100 inccb->ccb_h.target_id,
1101 inccb->ccb_h.target_lun) !=
1104 CAM_SIM_UNLOCK(bus->sim);
1107 /* Ensure all of our fields are correct */
1108 xpt_setup_ccb(&ccb.ccb_h, ccb.ccb_h.path,
1109 inccb->ccb_h.pinfo.priority);
1110 xpt_merge_ccb(&ccb, inccb);
1111 ccb.ccb_h.cbfcnp = xptdone;
1113 CAM_SIM_UNLOCK(bus->sim);
1114 bcopy(&ccb, inccb, sizeof(union ccb));
1115 xpt_free_path(ccb.ccb_h.path);
1119 case XPT_DEV_MATCH: {
1120 struct cam_periph_map_info mapinfo;
1121 struct cam_path *old_path;
1124 * We can't deal with physical addresses for this
1125 * type of transaction.
1127 if (inccb->ccb_h.flags & CAM_DATA_PHYS) {
1133 * Save this in case the caller had it set to
1134 * something in particular.
1136 old_path = inccb->ccb_h.path;
1139 * We really don't need a path for the matching
1140 * code. The path is needed because of the
1141 * debugging statements in xpt_action(). They
1142 * assume that the CCB has a valid path.
1144 inccb->ccb_h.path = xpt_periph->path;
1146 bzero(&mapinfo, sizeof(mapinfo));
1149 * Map the pattern and match buffers into kernel
1150 * virtual address space.
1152 error = cam_periph_mapmem(inccb, &mapinfo);
1155 inccb->ccb_h.path = old_path;
1160 * This is an immediate CCB, we can send it on directly.
1165 * Map the buffers back into user space.
1167 cam_periph_unmapmem(inccb, &mapinfo);
1169 inccb->ccb_h.path = old_path;
1178 xpt_release_bus(bus);
1182 * This is the getpassthru ioctl. It takes a XPT_GDEVLIST ccb as input,
1183 * with the periphal driver name and unit name filled in. The other
1184 * fields don't really matter as input. The passthrough driver name
1185 * ("pass"), and unit number are passed back in the ccb. The current
1186 * device generation number, and the index into the device peripheral
1187 * driver list, and the status are also passed back. Note that
1188 * since we do everything in one pass, unlike the XPT_GDEVLIST ccb,
1189 * we never return a status of CAM_GDEVLIST_LIST_CHANGED. It is
1190 * (or rather should be) impossible for the device peripheral driver
1191 * list to change since we look at the whole thing in one pass, and
1192 * we do it with lock protection.
1195 case CAMGETPASSTHRU: {
1197 struct cam_periph *periph;
1198 struct periph_driver **p_drv;
1201 u_int cur_generation;
1202 int base_periph_found;
1205 ccb = (union ccb *)addr;
1206 unit = ccb->cgdl.unit_number;
1207 name = ccb->cgdl.periph_name;
1209 * Every 100 devices, we want to drop our lock protection to
1210 * give the software interrupt handler a chance to run.
1211 * Most systems won't run into this check, but this should
1212 * avoid starvation in the software interrupt handler in
1217 ccb = (union ccb *)addr;
1219 base_periph_found = 0;
1222 * Sanity check -- make sure we don't get a null peripheral
1225 if (*ccb->cgdl.periph_name == '\0') {
1230 /* Keep the list from changing while we traverse it */
1231 mtx_lock(&xsoftc.xpt_topo_lock);
1233 cur_generation = xsoftc.xpt_generation;
1235 /* first find our driver in the list of drivers */
1236 for (p_drv = periph_drivers; *p_drv != NULL; p_drv++)
1237 if (strcmp((*p_drv)->driver_name, name) == 0)
1240 if (*p_drv == NULL) {
1241 mtx_unlock(&xsoftc.xpt_topo_lock);
1242 ccb->ccb_h.status = CAM_REQ_CMP_ERR;
1243 ccb->cgdl.status = CAM_GDEVLIST_ERROR;
1244 *ccb->cgdl.periph_name = '\0';
1245 ccb->cgdl.unit_number = 0;
1251 * Run through every peripheral instance of this driver
1252 * and check to see whether it matches the unit passed
1253 * in by the user. If it does, get out of the loops and
1254 * find the passthrough driver associated with that
1255 * peripheral driver.
1257 for (periph = TAILQ_FIRST(&(*p_drv)->units); periph != NULL;
1258 periph = TAILQ_NEXT(periph, unit_links)) {
1260 if (periph->unit_number == unit) {
1262 } else if (--splbreaknum == 0) {
1263 mtx_unlock(&xsoftc.xpt_topo_lock);
1264 mtx_lock(&xsoftc.xpt_topo_lock);
1266 if (cur_generation != xsoftc.xpt_generation)
1271 * If we found the peripheral driver that the user passed
1272 * in, go through all of the peripheral drivers for that
1273 * particular device and look for a passthrough driver.
1275 if (periph != NULL) {
1276 struct cam_ed *device;
1279 base_periph_found = 1;
1280 device = periph->path->device;
1281 for (i = 0, periph = SLIST_FIRST(&device->periphs);
1283 periph = SLIST_NEXT(periph, periph_links), i++) {
1285 * Check to see whether we have a
1286 * passthrough device or not.
1288 if (strcmp(periph->periph_name, "pass") == 0) {
1290 * Fill in the getdevlist fields.
1292 strcpy(ccb->cgdl.periph_name,
1293 periph->periph_name);
1294 ccb->cgdl.unit_number =
1295 periph->unit_number;
1296 if (SLIST_NEXT(periph, periph_links))
1298 CAM_GDEVLIST_MORE_DEVS;
1301 CAM_GDEVLIST_LAST_DEVICE;
1302 ccb->cgdl.generation =
1304 ccb->cgdl.index = i;
1306 * Fill in some CCB header fields
1307 * that the user may want.
1309 ccb->ccb_h.path_id =
1310 periph->path->bus->path_id;
1311 ccb->ccb_h.target_id =
1312 periph->path->target->target_id;
1313 ccb->ccb_h.target_lun =
1314 periph->path->device->lun_id;
1315 ccb->ccb_h.status = CAM_REQ_CMP;
1322 * If the periph is null here, one of two things has
1323 * happened. The first possibility is that we couldn't
1324 * find the unit number of the particular peripheral driver
1325 * that the user is asking about. e.g. the user asks for
1326 * the passthrough driver for "da11". We find the list of
1327 * "da" peripherals all right, but there is no unit 11.
1328 * The other possibility is that we went through the list
1329 * of peripheral drivers attached to the device structure,
1330 * but didn't find one with the name "pass". Either way,
1331 * we return ENOENT, since we couldn't find something.
1333 if (periph == NULL) {
1334 ccb->ccb_h.status = CAM_REQ_CMP_ERR;
1335 ccb->cgdl.status = CAM_GDEVLIST_ERROR;
1336 *ccb->cgdl.periph_name = '\0';
1337 ccb->cgdl.unit_number = 0;
1340 * It is unfortunate that this is even necessary,
1341 * but there are many, many clueless users out there.
1342 * If this is true, the user is looking for the
1343 * passthrough driver, but doesn't have one in his
1346 if (base_periph_found == 1) {
1347 printf("xptioctl: pass driver is not in the "
1349 printf("xptioctl: put \"device pass\" in "
1350 "your kernel config file\n");
1353 mtx_unlock(&xsoftc.xpt_topo_lock);
1365 cam_module_event_handler(module_t mod, int what, void *arg)
1371 if ((error = xpt_init(NULL)) != 0)
1383 /* thread to handle bus rescans */
1385 xpt_scanner_thread(void *dummy)
1389 struct cam_sim *sim;
1393 * Wait for a rescan request to come in. When it does, splice
1394 * it onto a queue from local storage so that the xpt lock
1395 * doesn't need to be held while the requests are being
1399 msleep(&xsoftc.ccb_scanq, &xsoftc.xpt_topo_lock, PRIBIO,
1402 TAILQ_CONCAT(&queue, &xsoftc.ccb_scanq, sim_links.tqe);
1405 while ((ccb = (union ccb *)TAILQ_FIRST(&queue)) != NULL) {
1406 TAILQ_REMOVE(&queue, &ccb->ccb_h, sim_links.tqe);
1408 sim = ccb->ccb_h.path->bus->sim;
1411 ccb->ccb_h.func_code = XPT_SCAN_BUS;
1412 ccb->ccb_h.cbfcnp = xptdone;
1413 xpt_setup_ccb(&ccb->ccb_h, ccb->ccb_h.path, 5);
1414 cam_periph_runccb(ccb, NULL, 0, 0, NULL);
1415 xpt_free_path(ccb->ccb_h.path);
1417 CAM_SIM_UNLOCK(sim);
1423 xpt_rescan(union ccb *ccb)
1425 struct ccb_hdr *hdr;
1428 * Don't make duplicate entries for the same paths.
1431 TAILQ_FOREACH(hdr, &xsoftc.ccb_scanq, sim_links.tqe) {
1432 if (xpt_path_comp(hdr->path, ccb->ccb_h.path) == 0) {
1434 xpt_print(ccb->ccb_h.path, "rescan already queued\n");
1435 xpt_free_path(ccb->ccb_h.path);
1440 TAILQ_INSERT_TAIL(&xsoftc.ccb_scanq, &ccb->ccb_h, sim_links.tqe);
1441 wakeup(&xsoftc.ccb_scanq);
1445 /* Functions accessed by the peripheral drivers */
1447 xpt_init(void *dummy)
1449 struct cam_sim *xpt_sim;
1450 struct cam_path *path;
1451 struct cam_devq *devq;
1454 TAILQ_INIT(&xsoftc.xpt_busses);
1455 TAILQ_INIT(&cam_simq);
1456 TAILQ_INIT(&xsoftc.ccb_scanq);
1457 STAILQ_INIT(&xsoftc.highpowerq);
1458 xsoftc.num_highpower = CAM_MAX_HIGHPOWER;
1460 mtx_init(&cam_simq_lock, "CAM SIMQ lock", NULL, MTX_DEF);
1461 mtx_init(&xsoftc.xpt_lock, "XPT lock", NULL, MTX_DEF);
1462 mtx_init(&xsoftc.xpt_topo_lock, "XPT topology lock", NULL, MTX_DEF);
1465 * The xpt layer is, itself, the equivelent of a SIM.
1466 * Allow 16 ccbs in the ccb pool for it. This should
1467 * give decent parallelism when we probe busses and
1468 * perform other XPT functions.
1470 devq = cam_simq_alloc(16);
1471 xpt_sim = cam_sim_alloc(xptaction,
1476 /*mtx*/&xsoftc.xpt_lock,
1477 /*max_dev_transactions*/0,
1478 /*max_tagged_dev_transactions*/0,
1480 if (xpt_sim == NULL)
1483 xpt_sim->max_ccbs = 16;
1485 mtx_lock(&xsoftc.xpt_lock);
1486 if ((status = xpt_bus_register(xpt_sim, NULL, 0)) != CAM_SUCCESS) {
1487 printf("xpt_init: xpt_bus_register failed with status %#x,"
1488 " failing attach\n", status);
1493 * Looking at the XPT from the SIM layer, the XPT is
1494 * the equivelent of a peripheral driver. Allocate
1495 * a peripheral driver entry for us.
1497 if ((status = xpt_create_path(&path, NULL, CAM_XPT_PATH_ID,
1498 CAM_TARGET_WILDCARD,
1499 CAM_LUN_WILDCARD)) != CAM_REQ_CMP) {
1500 printf("xpt_init: xpt_create_path failed with status %#x,"
1501 " failing attach\n", status);
1505 cam_periph_alloc(xptregister, NULL, NULL, NULL, "xpt", CAM_PERIPH_BIO,
1506 path, NULL, 0, xpt_sim);
1507 xpt_free_path(path);
1508 mtx_unlock(&xsoftc.xpt_lock);
1511 * Register a callback for when interrupts are enabled.
1513 xsoftc.xpt_config_hook =
1514 (struct intr_config_hook *)malloc(sizeof(struct intr_config_hook),
1515 M_CAMXPT, M_NOWAIT | M_ZERO);
1516 if (xsoftc.xpt_config_hook == NULL) {
1517 printf("xpt_init: Cannot malloc config hook "
1518 "- failing attach\n");
1522 xsoftc.xpt_config_hook->ich_func = xpt_config;
1523 if (config_intrhook_establish(xsoftc.xpt_config_hook) != 0) {
1524 free (xsoftc.xpt_config_hook, M_CAMXPT);
1525 printf("xpt_init: config_intrhook_establish failed "
1526 "- failing attach\n");
1529 /* fire up rescan thread */
1530 if (kproc_create(xpt_scanner_thread, NULL, NULL, 0, 0, "xpt_thrd")) {
1531 printf("xpt_init: failed to create rescan thread\n");
1533 /* Install our software interrupt handlers */
1534 swi_add(NULL, "cambio", camisr, NULL, SWI_CAMBIO, INTR_MPSAFE, &cambio_ih);
1540 xptregister(struct cam_periph *periph, void *arg)
1542 struct cam_sim *xpt_sim;
1544 if (periph == NULL) {
1545 printf("xptregister: periph was NULL!!\n");
1546 return(CAM_REQ_CMP_ERR);
1549 xpt_sim = (struct cam_sim *)arg;
1550 xpt_sim->softc = periph;
1551 xpt_periph = periph;
1552 periph->softc = NULL;
1554 return(CAM_REQ_CMP);
1558 xpt_add_periph(struct cam_periph *periph)
1560 struct cam_ed *device;
1562 struct periph_list *periph_head;
1564 mtx_assert(periph->sim->mtx, MA_OWNED);
1566 device = periph->path->device;
1568 periph_head = &device->periphs;
1570 status = CAM_REQ_CMP;
1572 if (device != NULL) {
1574 * Make room for this peripheral
1575 * so it will fit in the queue
1576 * when it's scheduled to run
1578 status = camq_resize(&device->drvq,
1579 device->drvq.array_size + 1);
1581 device->generation++;
1583 SLIST_INSERT_HEAD(periph_head, periph, periph_links);
1586 mtx_lock(&xsoftc.xpt_topo_lock);
1587 xsoftc.xpt_generation++;
1588 mtx_unlock(&xsoftc.xpt_topo_lock);
1594 xpt_remove_periph(struct cam_periph *periph)
1596 struct cam_ed *device;
1598 mtx_assert(periph->sim->mtx, MA_OWNED);
1600 device = periph->path->device;
1602 if (device != NULL) {
1603 struct periph_list *periph_head;
1605 periph_head = &device->periphs;
1607 /* Release the slot for this peripheral */
1608 camq_resize(&device->drvq, device->drvq.array_size - 1);
1610 device->generation++;
1612 SLIST_REMOVE(periph_head, periph, cam_periph, periph_links);
1615 mtx_lock(&xsoftc.xpt_topo_lock);
1616 xsoftc.xpt_generation++;
1617 mtx_unlock(&xsoftc.xpt_topo_lock);
1622 xpt_announce_periph(struct cam_periph *periph, char *announce_string)
1624 struct ccb_pathinq cpi;
1625 struct ccb_trans_settings cts;
1626 struct cam_path *path;
1631 mtx_assert(periph->sim->mtx, MA_OWNED);
1633 path = periph->path;
1635 * To ensure that this is printed in one piece,
1636 * mask out CAM interrupts.
1638 printf("%s%d at %s%d bus %d target %d lun %d\n",
1639 periph->periph_name, periph->unit_number,
1640 path->bus->sim->sim_name,
1641 path->bus->sim->unit_number,
1642 path->bus->sim->bus_id,
1643 path->target->target_id,
1644 path->device->lun_id);
1645 printf("%s%d: ", periph->periph_name, periph->unit_number);
1646 scsi_print_inquiry(&path->device->inq_data);
1647 if (bootverbose && path->device->serial_num_len > 0) {
1648 /* Don't wrap the screen - print only the first 60 chars */
1649 printf("%s%d: Serial Number %.60s\n", periph->periph_name,
1650 periph->unit_number, path->device->serial_num);
1652 xpt_setup_ccb(&cts.ccb_h, path, /*priority*/1);
1653 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
1654 cts.type = CTS_TYPE_CURRENT_SETTINGS;
1655 xpt_action((union ccb*)&cts);
1656 if ((cts.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1660 /* Ask the SIM for its base transfer speed */
1661 xpt_setup_ccb(&cpi.ccb_h, path, /*priority*/1);
1662 cpi.ccb_h.func_code = XPT_PATH_INQ;
1663 xpt_action((union ccb *)&cpi);
1665 speed = cpi.base_transfer_speed;
1667 if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_SPI) {
1668 struct ccb_trans_settings_spi *spi;
1670 spi = &cts.xport_specific.spi;
1671 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) != 0
1672 && spi->sync_offset != 0) {
1673 freq = scsi_calc_syncsrate(spi->sync_period);
1677 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0)
1678 speed *= (0x01 << spi->bus_width);
1681 if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_FC) {
1682 struct ccb_trans_settings_fc *fc = &cts.xport_specific.fc;
1683 if (fc->valid & CTS_FC_VALID_SPEED) {
1684 speed = fc->bitrate;
1688 if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_SAS) {
1689 struct ccb_trans_settings_sas *sas = &cts.xport_specific.sas;
1690 if (sas->valid & CTS_SAS_VALID_SPEED) {
1691 speed = sas->bitrate;
1697 printf("%s%d: %d.%03dMB/s transfers",
1698 periph->periph_name, periph->unit_number,
1701 printf("%s%d: %dKB/s transfers", periph->periph_name,
1702 periph->unit_number, speed);
1703 /* Report additional information about SPI connections */
1704 if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_SPI) {
1705 struct ccb_trans_settings_spi *spi;
1707 spi = &cts.xport_specific.spi;
1709 printf(" (%d.%03dMHz%s, offset %d", freq / 1000,
1711 (spi->ppr_options & MSG_EXT_PPR_DT_REQ) != 0
1715 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0
1716 && spi->bus_width > 0) {
1722 printf("%dbit)", 8 * (0x01 << spi->bus_width));
1723 } else if (freq != 0) {
1727 if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_FC) {
1728 struct ccb_trans_settings_fc *fc;
1730 fc = &cts.xport_specific.fc;
1731 if (fc->valid & CTS_FC_VALID_WWNN)
1732 printf(" WWNN 0x%llx", (long long) fc->wwnn);
1733 if (fc->valid & CTS_FC_VALID_WWPN)
1734 printf(" WWPN 0x%llx", (long long) fc->wwpn);
1735 if (fc->valid & CTS_FC_VALID_PORT)
1736 printf(" PortID 0x%x", fc->port);
1739 if (path->device->inq_flags & SID_CmdQue
1740 || path->device->flags & CAM_DEV_TAG_AFTER_COUNT) {
1741 printf("\n%s%d: Command Queueing Enabled",
1742 periph->periph_name, periph->unit_number);
1747 * We only want to print the caller's announce string if they've
1750 if (announce_string != NULL)
1751 printf("%s%d: %s\n", periph->periph_name,
1752 periph->unit_number, announce_string);
1755 static dev_match_ret
1756 xptbusmatch(struct dev_match_pattern *patterns, u_int num_patterns,
1759 dev_match_ret retval;
1762 retval = DM_RET_NONE;
1765 * If we aren't given something to match against, that's an error.
1768 return(DM_RET_ERROR);
1771 * If there are no match entries, then this bus matches no
1774 if ((patterns == NULL) || (num_patterns == 0))
1775 return(DM_RET_DESCEND | DM_RET_COPY);
1777 for (i = 0; i < num_patterns; i++) {
1778 struct bus_match_pattern *cur_pattern;
1781 * If the pattern in question isn't for a bus node, we
1782 * aren't interested. However, we do indicate to the
1783 * calling routine that we should continue descending the
1784 * tree, since the user wants to match against lower-level
1787 if (patterns[i].type != DEV_MATCH_BUS) {
1788 if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)
1789 retval |= DM_RET_DESCEND;
1793 cur_pattern = &patterns[i].pattern.bus_pattern;
1796 * If they want to match any bus node, we give them any
1799 if (cur_pattern->flags == BUS_MATCH_ANY) {
1800 /* set the copy flag */
1801 retval |= DM_RET_COPY;
1804 * If we've already decided on an action, go ahead
1807 if ((retval & DM_RET_ACTION_MASK) != DM_RET_NONE)
1812 * Not sure why someone would do this...
1814 if (cur_pattern->flags == BUS_MATCH_NONE)
1817 if (((cur_pattern->flags & BUS_MATCH_PATH) != 0)
1818 && (cur_pattern->path_id != bus->path_id))
1821 if (((cur_pattern->flags & BUS_MATCH_BUS_ID) != 0)
1822 && (cur_pattern->bus_id != bus->sim->bus_id))
1825 if (((cur_pattern->flags & BUS_MATCH_UNIT) != 0)
1826 && (cur_pattern->unit_number != bus->sim->unit_number))
1829 if (((cur_pattern->flags & BUS_MATCH_NAME) != 0)
1830 && (strncmp(cur_pattern->dev_name, bus->sim->sim_name,
1835 * If we get to this point, the user definitely wants
1836 * information on this bus. So tell the caller to copy the
1839 retval |= DM_RET_COPY;
1842 * If the return action has been set to descend, then we
1843 * know that we've already seen a non-bus matching
1844 * expression, therefore we need to further descend the tree.
1845 * This won't change by continuing around the loop, so we
1846 * go ahead and return. If we haven't seen a non-bus
1847 * matching expression, we keep going around the loop until
1848 * we exhaust the matching expressions. We'll set the stop
1849 * flag once we fall out of the loop.
1851 if ((retval & DM_RET_ACTION_MASK) == DM_RET_DESCEND)
1856 * If the return action hasn't been set to descend yet, that means
1857 * we haven't seen anything other than bus matching patterns. So
1858 * tell the caller to stop descending the tree -- the user doesn't
1859 * want to match against lower level tree elements.
1861 if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)
1862 retval |= DM_RET_STOP;
1867 static dev_match_ret
1868 xptdevicematch(struct dev_match_pattern *patterns, u_int num_patterns,
1869 struct cam_ed *device)
1871 dev_match_ret retval;
1874 retval = DM_RET_NONE;
1877 * If we aren't given something to match against, that's an error.
1880 return(DM_RET_ERROR);
1883 * If there are no match entries, then this device matches no
1886 if ((patterns == NULL) || (num_patterns == 0))
1887 return(DM_RET_DESCEND | DM_RET_COPY);
1889 for (i = 0; i < num_patterns; i++) {
1890 struct device_match_pattern *cur_pattern;
1893 * If the pattern in question isn't for a device node, we
1894 * aren't interested.
1896 if (patterns[i].type != DEV_MATCH_DEVICE) {
1897 if ((patterns[i].type == DEV_MATCH_PERIPH)
1898 && ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE))
1899 retval |= DM_RET_DESCEND;
1903 cur_pattern = &patterns[i].pattern.device_pattern;
1906 * If they want to match any device node, we give them any
1909 if (cur_pattern->flags == DEV_MATCH_ANY) {
1910 /* set the copy flag */
1911 retval |= DM_RET_COPY;
1915 * If we've already decided on an action, go ahead
1918 if ((retval & DM_RET_ACTION_MASK) != DM_RET_NONE)
1923 * Not sure why someone would do this...
1925 if (cur_pattern->flags == DEV_MATCH_NONE)
1928 if (((cur_pattern->flags & DEV_MATCH_PATH) != 0)
1929 && (cur_pattern->path_id != device->target->bus->path_id))
1932 if (((cur_pattern->flags & DEV_MATCH_TARGET) != 0)
1933 && (cur_pattern->target_id != device->target->target_id))
1936 if (((cur_pattern->flags & DEV_MATCH_LUN) != 0)
1937 && (cur_pattern->target_lun != device->lun_id))
1940 if (((cur_pattern->flags & DEV_MATCH_INQUIRY) != 0)
1941 && (cam_quirkmatch((caddr_t)&device->inq_data,
1942 (caddr_t)&cur_pattern->inq_pat,
1943 1, sizeof(cur_pattern->inq_pat),
1944 scsi_static_inquiry_match) == NULL))
1948 * If we get to this point, the user definitely wants
1949 * information on this device. So tell the caller to copy
1952 retval |= DM_RET_COPY;
1955 * If the return action has been set to descend, then we
1956 * know that we've already seen a peripheral matching
1957 * expression, therefore we need to further descend the tree.
1958 * This won't change by continuing around the loop, so we
1959 * go ahead and return. If we haven't seen a peripheral
1960 * matching expression, we keep going around the loop until
1961 * we exhaust the matching expressions. We'll set the stop
1962 * flag once we fall out of the loop.
1964 if ((retval & DM_RET_ACTION_MASK) == DM_RET_DESCEND)
1969 * If the return action hasn't been set to descend yet, that means
1970 * we haven't seen any peripheral matching patterns. So tell the
1971 * caller to stop descending the tree -- the user doesn't want to
1972 * match against lower level tree elements.
1974 if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)
1975 retval |= DM_RET_STOP;
1981 * Match a single peripheral against any number of match patterns.
1983 static dev_match_ret
1984 xptperiphmatch(struct dev_match_pattern *patterns, u_int num_patterns,
1985 struct cam_periph *periph)
1987 dev_match_ret retval;
1991 * If we aren't given something to match against, that's an error.
1994 return(DM_RET_ERROR);
1997 * If there are no match entries, then this peripheral matches no
2000 if ((patterns == NULL) || (num_patterns == 0))
2001 return(DM_RET_STOP | DM_RET_COPY);
2004 * There aren't any nodes below a peripheral node, so there's no
2005 * reason to descend the tree any further.
2007 retval = DM_RET_STOP;
2009 for (i = 0; i < num_patterns; i++) {
2010 struct periph_match_pattern *cur_pattern;
2013 * If the pattern in question isn't for a peripheral, we
2014 * aren't interested.
2016 if (patterns[i].type != DEV_MATCH_PERIPH)
2019 cur_pattern = &patterns[i].pattern.periph_pattern;
2022 * If they want to match on anything, then we will do so.
2024 if (cur_pattern->flags == PERIPH_MATCH_ANY) {
2025 /* set the copy flag */
2026 retval |= DM_RET_COPY;
2029 * We've already set the return action to stop,
2030 * since there are no nodes below peripherals in
2037 * Not sure why someone would do this...
2039 if (cur_pattern->flags == PERIPH_MATCH_NONE)
2042 if (((cur_pattern->flags & PERIPH_MATCH_PATH) != 0)
2043 && (cur_pattern->path_id != periph->path->bus->path_id))
2047 * For the target and lun id's, we have to make sure the
2048 * target and lun pointers aren't NULL. The xpt peripheral
2049 * has a wildcard target and device.
2051 if (((cur_pattern->flags & PERIPH_MATCH_TARGET) != 0)
2052 && ((periph->path->target == NULL)
2053 ||(cur_pattern->target_id != periph->path->target->target_id)))
2056 if (((cur_pattern->flags & PERIPH_MATCH_LUN) != 0)
2057 && ((periph->path->device == NULL)
2058 || (cur_pattern->target_lun != periph->path->device->lun_id)))
2061 if (((cur_pattern->flags & PERIPH_MATCH_UNIT) != 0)
2062 && (cur_pattern->unit_number != periph->unit_number))
2065 if (((cur_pattern->flags & PERIPH_MATCH_NAME) != 0)
2066 && (strncmp(cur_pattern->periph_name, periph->periph_name,
2071 * If we get to this point, the user definitely wants
2072 * information on this peripheral. So tell the caller to
2073 * copy the data out.
2075 retval |= DM_RET_COPY;
2078 * The return action has already been set to stop, since
2079 * peripherals don't have any nodes below them in the EDT.
2085 * If we get to this point, the peripheral that was passed in
2086 * doesn't match any of the patterns.
2092 xptedtbusfunc(struct cam_eb *bus, void *arg)
2094 struct ccb_dev_match *cdm;
2095 dev_match_ret retval;
2097 cdm = (struct ccb_dev_match *)arg;
2100 * If our position is for something deeper in the tree, that means
2101 * that we've already seen this node. So, we keep going down.
2103 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2104 && (cdm->pos.cookie.bus == bus)
2105 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2106 && (cdm->pos.cookie.target != NULL))
2107 retval = DM_RET_DESCEND;
2109 retval = xptbusmatch(cdm->patterns, cdm->num_patterns, bus);
2112 * If we got an error, bail out of the search.
2114 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
2115 cdm->status = CAM_DEV_MATCH_ERROR;
2120 * If the copy flag is set, copy this bus out.
2122 if (retval & DM_RET_COPY) {
2125 spaceleft = cdm->match_buf_len - (cdm->num_matches *
2126 sizeof(struct dev_match_result));
2129 * If we don't have enough space to put in another
2130 * match result, save our position and tell the
2131 * user there are more devices to check.
2133 if (spaceleft < sizeof(struct dev_match_result)) {
2134 bzero(&cdm->pos, sizeof(cdm->pos));
2135 cdm->pos.position_type =
2136 CAM_DEV_POS_EDT | CAM_DEV_POS_BUS;
2138 cdm->pos.cookie.bus = bus;
2139 cdm->pos.generations[CAM_BUS_GENERATION]=
2140 xsoftc.bus_generation;
2141 cdm->status = CAM_DEV_MATCH_MORE;
2144 j = cdm->num_matches;
2146 cdm->matches[j].type = DEV_MATCH_BUS;
2147 cdm->matches[j].result.bus_result.path_id = bus->path_id;
2148 cdm->matches[j].result.bus_result.bus_id = bus->sim->bus_id;
2149 cdm->matches[j].result.bus_result.unit_number =
2150 bus->sim->unit_number;
2151 strncpy(cdm->matches[j].result.bus_result.dev_name,
2152 bus->sim->sim_name, DEV_IDLEN);
2156 * If the user is only interested in busses, there's no
2157 * reason to descend to the next level in the tree.
2159 if ((retval & DM_RET_ACTION_MASK) == DM_RET_STOP)
2163 * If there is a target generation recorded, check it to
2164 * make sure the target list hasn't changed.
2166 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2167 && (bus == cdm->pos.cookie.bus)
2168 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2169 && (cdm->pos.generations[CAM_TARGET_GENERATION] != 0)
2170 && (cdm->pos.generations[CAM_TARGET_GENERATION] !=
2172 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2176 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2177 && (cdm->pos.cookie.bus == bus)
2178 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2179 && (cdm->pos.cookie.target != NULL))
2180 return(xpttargettraverse(bus,
2181 (struct cam_et *)cdm->pos.cookie.target,
2182 xptedttargetfunc, arg));
2184 return(xpttargettraverse(bus, NULL, xptedttargetfunc, arg));
2188 xptedttargetfunc(struct cam_et *target, void *arg)
2190 struct ccb_dev_match *cdm;
2192 cdm = (struct ccb_dev_match *)arg;
2195 * If there is a device list generation recorded, check it to
2196 * make sure the device list hasn't changed.
2198 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2199 && (cdm->pos.cookie.bus == target->bus)
2200 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2201 && (cdm->pos.cookie.target == target)
2202 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2203 && (cdm->pos.generations[CAM_DEV_GENERATION] != 0)
2204 && (cdm->pos.generations[CAM_DEV_GENERATION] !=
2205 target->generation)) {
2206 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2210 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2211 && (cdm->pos.cookie.bus == target->bus)
2212 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2213 && (cdm->pos.cookie.target == target)
2214 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2215 && (cdm->pos.cookie.device != NULL))
2216 return(xptdevicetraverse(target,
2217 (struct cam_ed *)cdm->pos.cookie.device,
2218 xptedtdevicefunc, arg));
2220 return(xptdevicetraverse(target, NULL, xptedtdevicefunc, arg));
2224 xptedtdevicefunc(struct cam_ed *device, void *arg)
2227 struct ccb_dev_match *cdm;
2228 dev_match_ret retval;
2230 cdm = (struct ccb_dev_match *)arg;
2233 * If our position is for something deeper in the tree, that means
2234 * that we've already seen this node. So, we keep going down.
2236 if ((cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2237 && (cdm->pos.cookie.device == device)
2238 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2239 && (cdm->pos.cookie.periph != NULL))
2240 retval = DM_RET_DESCEND;
2242 retval = xptdevicematch(cdm->patterns, cdm->num_patterns,
2245 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
2246 cdm->status = CAM_DEV_MATCH_ERROR;
2251 * If the copy flag is set, copy this device out.
2253 if (retval & DM_RET_COPY) {
2256 spaceleft = cdm->match_buf_len - (cdm->num_matches *
2257 sizeof(struct dev_match_result));
2260 * If we don't have enough space to put in another
2261 * match result, save our position and tell the
2262 * user there are more devices to check.
2264 if (spaceleft < sizeof(struct dev_match_result)) {
2265 bzero(&cdm->pos, sizeof(cdm->pos));
2266 cdm->pos.position_type =
2267 CAM_DEV_POS_EDT | CAM_DEV_POS_BUS |
2268 CAM_DEV_POS_TARGET | CAM_DEV_POS_DEVICE;
2270 cdm->pos.cookie.bus = device->target->bus;
2271 cdm->pos.generations[CAM_BUS_GENERATION]=
2272 xsoftc.bus_generation;
2273 cdm->pos.cookie.target = device->target;
2274 cdm->pos.generations[CAM_TARGET_GENERATION] =
2275 device->target->bus->generation;
2276 cdm->pos.cookie.device = device;
2277 cdm->pos.generations[CAM_DEV_GENERATION] =
2278 device->target->generation;
2279 cdm->status = CAM_DEV_MATCH_MORE;
2282 j = cdm->num_matches;
2284 cdm->matches[j].type = DEV_MATCH_DEVICE;
2285 cdm->matches[j].result.device_result.path_id =
2286 device->target->bus->path_id;
2287 cdm->matches[j].result.device_result.target_id =
2288 device->target->target_id;
2289 cdm->matches[j].result.device_result.target_lun =
2291 bcopy(&device->inq_data,
2292 &cdm->matches[j].result.device_result.inq_data,
2293 sizeof(struct scsi_inquiry_data));
2295 /* Let the user know whether this device is unconfigured */
2296 if (device->flags & CAM_DEV_UNCONFIGURED)
2297 cdm->matches[j].result.device_result.flags =
2298 DEV_RESULT_UNCONFIGURED;
2300 cdm->matches[j].result.device_result.flags =
2305 * If the user isn't interested in peripherals, don't descend
2306 * the tree any further.
2308 if ((retval & DM_RET_ACTION_MASK) == DM_RET_STOP)
2312 * If there is a peripheral list generation recorded, make sure
2313 * it hasn't changed.
2315 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2316 && (device->target->bus == cdm->pos.cookie.bus)
2317 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2318 && (device->target == cdm->pos.cookie.target)
2319 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2320 && (device == cdm->pos.cookie.device)
2321 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2322 && (cdm->pos.generations[CAM_PERIPH_GENERATION] != 0)
2323 && (cdm->pos.generations[CAM_PERIPH_GENERATION] !=
2324 device->generation)){
2325 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2329 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2330 && (cdm->pos.cookie.bus == device->target->bus)
2331 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2332 && (cdm->pos.cookie.target == device->target)
2333 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2334 && (cdm->pos.cookie.device == device)
2335 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2336 && (cdm->pos.cookie.periph != NULL))
2337 return(xptperiphtraverse(device,
2338 (struct cam_periph *)cdm->pos.cookie.periph,
2339 xptedtperiphfunc, arg));
2341 return(xptperiphtraverse(device, NULL, xptedtperiphfunc, arg));
2345 xptedtperiphfunc(struct cam_periph *periph, void *arg)
2347 struct ccb_dev_match *cdm;
2348 dev_match_ret retval;
2350 cdm = (struct ccb_dev_match *)arg;
2352 retval = xptperiphmatch(cdm->patterns, cdm->num_patterns, periph);
2354 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
2355 cdm->status = CAM_DEV_MATCH_ERROR;
2360 * If the copy flag is set, copy this peripheral out.
2362 if (retval & DM_RET_COPY) {
2365 spaceleft = cdm->match_buf_len - (cdm->num_matches *
2366 sizeof(struct dev_match_result));
2369 * If we don't have enough space to put in another
2370 * match result, save our position and tell the
2371 * user there are more devices to check.
2373 if (spaceleft < sizeof(struct dev_match_result)) {
2374 bzero(&cdm->pos, sizeof(cdm->pos));
2375 cdm->pos.position_type =
2376 CAM_DEV_POS_EDT | CAM_DEV_POS_BUS |
2377 CAM_DEV_POS_TARGET | CAM_DEV_POS_DEVICE |
2380 cdm->pos.cookie.bus = periph->path->bus;
2381 cdm->pos.generations[CAM_BUS_GENERATION]=
2382 xsoftc.bus_generation;
2383 cdm->pos.cookie.target = periph->path->target;
2384 cdm->pos.generations[CAM_TARGET_GENERATION] =
2385 periph->path->bus->generation;
2386 cdm->pos.cookie.device = periph->path->device;
2387 cdm->pos.generations[CAM_DEV_GENERATION] =
2388 periph->path->target->generation;
2389 cdm->pos.cookie.periph = periph;
2390 cdm->pos.generations[CAM_PERIPH_GENERATION] =
2391 periph->path->device->generation;
2392 cdm->status = CAM_DEV_MATCH_MORE;
2396 j = cdm->num_matches;
2398 cdm->matches[j].type = DEV_MATCH_PERIPH;
2399 cdm->matches[j].result.periph_result.path_id =
2400 periph->path->bus->path_id;
2401 cdm->matches[j].result.periph_result.target_id =
2402 periph->path->target->target_id;
2403 cdm->matches[j].result.periph_result.target_lun =
2404 periph->path->device->lun_id;
2405 cdm->matches[j].result.periph_result.unit_number =
2406 periph->unit_number;
2407 strncpy(cdm->matches[j].result.periph_result.periph_name,
2408 periph->periph_name, DEV_IDLEN);
2415 xptedtmatch(struct ccb_dev_match *cdm)
2419 cdm->num_matches = 0;
2422 * Check the bus list generation. If it has changed, the user
2423 * needs to reset everything and start over.
2425 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2426 && (cdm->pos.generations[CAM_BUS_GENERATION] != 0)
2427 && (cdm->pos.generations[CAM_BUS_GENERATION] != xsoftc.bus_generation)) {
2428 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2432 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2433 && (cdm->pos.cookie.bus != NULL))
2434 ret = xptbustraverse((struct cam_eb *)cdm->pos.cookie.bus,
2435 xptedtbusfunc, cdm);
2437 ret = xptbustraverse(NULL, xptedtbusfunc, cdm);
2440 * If we get back 0, that means that we had to stop before fully
2441 * traversing the EDT. It also means that one of the subroutines
2442 * has set the status field to the proper value. If we get back 1,
2443 * we've fully traversed the EDT and copied out any matching entries.
2446 cdm->status = CAM_DEV_MATCH_LAST;
2452 xptplistpdrvfunc(struct periph_driver **pdrv, void *arg)
2454 struct ccb_dev_match *cdm;
2456 cdm = (struct ccb_dev_match *)arg;
2458 if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR)
2459 && (cdm->pos.cookie.pdrv == pdrv)
2460 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2461 && (cdm->pos.generations[CAM_PERIPH_GENERATION] != 0)
2462 && (cdm->pos.generations[CAM_PERIPH_GENERATION] !=
2463 (*pdrv)->generation)) {
2464 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2468 if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR)
2469 && (cdm->pos.cookie.pdrv == pdrv)
2470 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2471 && (cdm->pos.cookie.periph != NULL))
2472 return(xptpdperiphtraverse(pdrv,
2473 (struct cam_periph *)cdm->pos.cookie.periph,
2474 xptplistperiphfunc, arg));
2476 return(xptpdperiphtraverse(pdrv, NULL,xptplistperiphfunc, arg));
2480 xptplistperiphfunc(struct cam_periph *periph, void *arg)
2482 struct ccb_dev_match *cdm;
2483 dev_match_ret retval;
2485 cdm = (struct ccb_dev_match *)arg;
2487 retval = xptperiphmatch(cdm->patterns, cdm->num_patterns, periph);
2489 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
2490 cdm->status = CAM_DEV_MATCH_ERROR;
2495 * If the copy flag is set, copy this peripheral out.
2497 if (retval & DM_RET_COPY) {
2500 spaceleft = cdm->match_buf_len - (cdm->num_matches *
2501 sizeof(struct dev_match_result));
2504 * If we don't have enough space to put in another
2505 * match result, save our position and tell the
2506 * user there are more devices to check.
2508 if (spaceleft < sizeof(struct dev_match_result)) {
2509 struct periph_driver **pdrv;
2512 bzero(&cdm->pos, sizeof(cdm->pos));
2513 cdm->pos.position_type =
2514 CAM_DEV_POS_PDRV | CAM_DEV_POS_PDPTR |
2518 * This may look a bit non-sensical, but it is
2519 * actually quite logical. There are very few
2520 * peripheral drivers, and bloating every peripheral
2521 * structure with a pointer back to its parent
2522 * peripheral driver linker set entry would cost
2523 * more in the long run than doing this quick lookup.
2525 for (pdrv = periph_drivers; *pdrv != NULL; pdrv++) {
2526 if (strcmp((*pdrv)->driver_name,
2527 periph->periph_name) == 0)
2531 if (*pdrv == NULL) {
2532 cdm->status = CAM_DEV_MATCH_ERROR;
2536 cdm->pos.cookie.pdrv = pdrv;
2538 * The periph generation slot does double duty, as
2539 * does the periph pointer slot. They are used for
2540 * both edt and pdrv lookups and positioning.
2542 cdm->pos.cookie.periph = periph;
2543 cdm->pos.generations[CAM_PERIPH_GENERATION] =
2544 (*pdrv)->generation;
2545 cdm->status = CAM_DEV_MATCH_MORE;
2549 j = cdm->num_matches;
2551 cdm->matches[j].type = DEV_MATCH_PERIPH;
2552 cdm->matches[j].result.periph_result.path_id =
2553 periph->path->bus->path_id;
2556 * The transport layer peripheral doesn't have a target or
2559 if (periph->path->target)
2560 cdm->matches[j].result.periph_result.target_id =
2561 periph->path->target->target_id;
2563 cdm->matches[j].result.periph_result.target_id = -1;
2565 if (periph->path->device)
2566 cdm->matches[j].result.periph_result.target_lun =
2567 periph->path->device->lun_id;
2569 cdm->matches[j].result.periph_result.target_lun = -1;
2571 cdm->matches[j].result.periph_result.unit_number =
2572 periph->unit_number;
2573 strncpy(cdm->matches[j].result.periph_result.periph_name,
2574 periph->periph_name, DEV_IDLEN);
2581 xptperiphlistmatch(struct ccb_dev_match *cdm)
2585 cdm->num_matches = 0;
2588 * At this point in the edt traversal function, we check the bus
2589 * list generation to make sure that no busses have been added or
2590 * removed since the user last sent a XPT_DEV_MATCH ccb through.
2591 * For the peripheral driver list traversal function, however, we
2592 * don't have to worry about new peripheral driver types coming or
2593 * going; they're in a linker set, and therefore can't change
2594 * without a recompile.
2597 if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR)
2598 && (cdm->pos.cookie.pdrv != NULL))
2599 ret = xptpdrvtraverse(
2600 (struct periph_driver **)cdm->pos.cookie.pdrv,
2601 xptplistpdrvfunc, cdm);
2603 ret = xptpdrvtraverse(NULL, xptplistpdrvfunc, cdm);
2606 * If we get back 0, that means that we had to stop before fully
2607 * traversing the peripheral driver tree. It also means that one of
2608 * the subroutines has set the status field to the proper value. If
2609 * we get back 1, we've fully traversed the EDT and copied out any
2613 cdm->status = CAM_DEV_MATCH_LAST;
2619 xptbustraverse(struct cam_eb *start_bus, xpt_busfunc_t *tr_func, void *arg)
2621 struct cam_eb *bus, *next_bus;
2626 mtx_lock(&xsoftc.xpt_topo_lock);
2627 for (bus = (start_bus ? start_bus : TAILQ_FIRST(&xsoftc.xpt_busses));
2630 next_bus = TAILQ_NEXT(bus, links);
2632 mtx_unlock(&xsoftc.xpt_topo_lock);
2633 CAM_SIM_LOCK(bus->sim);
2634 retval = tr_func(bus, arg);
2635 CAM_SIM_UNLOCK(bus->sim);
2638 mtx_lock(&xsoftc.xpt_topo_lock);
2640 mtx_unlock(&xsoftc.xpt_topo_lock);
2646 xpttargettraverse(struct cam_eb *bus, struct cam_et *start_target,
2647 xpt_targetfunc_t *tr_func, void *arg)
2649 struct cam_et *target, *next_target;
2653 for (target = (start_target ? start_target :
2654 TAILQ_FIRST(&bus->et_entries));
2655 target != NULL; target = next_target) {
2657 next_target = TAILQ_NEXT(target, links);
2659 retval = tr_func(target, arg);
2669 xptdevicetraverse(struct cam_et *target, struct cam_ed *start_device,
2670 xpt_devicefunc_t *tr_func, void *arg)
2672 struct cam_ed *device, *next_device;
2676 for (device = (start_device ? start_device :
2677 TAILQ_FIRST(&target->ed_entries));
2679 device = next_device) {
2681 next_device = TAILQ_NEXT(device, links);
2683 retval = tr_func(device, arg);
2693 xptperiphtraverse(struct cam_ed *device, struct cam_periph *start_periph,
2694 xpt_periphfunc_t *tr_func, void *arg)
2696 struct cam_periph *periph, *next_periph;
2701 for (periph = (start_periph ? start_periph :
2702 SLIST_FIRST(&device->periphs));
2704 periph = next_periph) {
2706 next_periph = SLIST_NEXT(periph, periph_links);
2708 retval = tr_func(periph, arg);
2717 xptpdrvtraverse(struct periph_driver **start_pdrv,
2718 xpt_pdrvfunc_t *tr_func, void *arg)
2720 struct periph_driver **pdrv;
2726 * We don't traverse the peripheral driver list like we do the
2727 * other lists, because it is a linker set, and therefore cannot be
2728 * changed during runtime. If the peripheral driver list is ever
2729 * re-done to be something other than a linker set (i.e. it can
2730 * change while the system is running), the list traversal should
2731 * be modified to work like the other traversal functions.
2733 for (pdrv = (start_pdrv ? start_pdrv : periph_drivers);
2734 *pdrv != NULL; pdrv++) {
2735 retval = tr_func(pdrv, arg);
2745 xptpdperiphtraverse(struct periph_driver **pdrv,
2746 struct cam_periph *start_periph,
2747 xpt_periphfunc_t *tr_func, void *arg)
2749 struct cam_periph *periph, *next_periph;
2754 for (periph = (start_periph ? start_periph :
2755 TAILQ_FIRST(&(*pdrv)->units)); periph != NULL;
2756 periph = next_periph) {
2758 next_periph = TAILQ_NEXT(periph, unit_links);
2760 retval = tr_func(periph, arg);
2768 xptdefbusfunc(struct cam_eb *bus, void *arg)
2770 struct xpt_traverse_config *tr_config;
2772 tr_config = (struct xpt_traverse_config *)arg;
2774 if (tr_config->depth == XPT_DEPTH_BUS) {
2775 xpt_busfunc_t *tr_func;
2777 tr_func = (xpt_busfunc_t *)tr_config->tr_func;
2779 return(tr_func(bus, tr_config->tr_arg));
2781 return(xpttargettraverse(bus, NULL, xptdeftargetfunc, arg));
2785 xptdeftargetfunc(struct cam_et *target, void *arg)
2787 struct xpt_traverse_config *tr_config;
2789 tr_config = (struct xpt_traverse_config *)arg;
2791 if (tr_config->depth == XPT_DEPTH_TARGET) {
2792 xpt_targetfunc_t *tr_func;
2794 tr_func = (xpt_targetfunc_t *)tr_config->tr_func;
2796 return(tr_func(target, tr_config->tr_arg));
2798 return(xptdevicetraverse(target, NULL, xptdefdevicefunc, arg));
2802 xptdefdevicefunc(struct cam_ed *device, void *arg)
2804 struct xpt_traverse_config *tr_config;
2806 tr_config = (struct xpt_traverse_config *)arg;
2808 if (tr_config->depth == XPT_DEPTH_DEVICE) {
2809 xpt_devicefunc_t *tr_func;
2811 tr_func = (xpt_devicefunc_t *)tr_config->tr_func;
2813 return(tr_func(device, tr_config->tr_arg));
2815 return(xptperiphtraverse(device, NULL, xptdefperiphfunc, arg));
2819 xptdefperiphfunc(struct cam_periph *periph, void *arg)
2821 struct xpt_traverse_config *tr_config;
2822 xpt_periphfunc_t *tr_func;
2824 tr_config = (struct xpt_traverse_config *)arg;
2826 tr_func = (xpt_periphfunc_t *)tr_config->tr_func;
2829 * Unlike the other default functions, we don't check for depth
2830 * here. The peripheral driver level is the last level in the EDT,
2831 * so if we're here, we should execute the function in question.
2833 return(tr_func(periph, tr_config->tr_arg));
2837 * Execute the given function for every bus in the EDT.
2840 xpt_for_all_busses(xpt_busfunc_t *tr_func, void *arg)
2842 struct xpt_traverse_config tr_config;
2844 tr_config.depth = XPT_DEPTH_BUS;
2845 tr_config.tr_func = tr_func;
2846 tr_config.tr_arg = arg;
2848 return(xptbustraverse(NULL, xptdefbusfunc, &tr_config));
2852 * Execute the given function for every device in the EDT.
2855 xpt_for_all_devices(xpt_devicefunc_t *tr_func, void *arg)
2857 struct xpt_traverse_config tr_config;
2859 tr_config.depth = XPT_DEPTH_DEVICE;
2860 tr_config.tr_func = tr_func;
2861 tr_config.tr_arg = arg;
2863 return(xptbustraverse(NULL, xptdefbusfunc, &tr_config));
2867 xptsetasyncfunc(struct cam_ed *device, void *arg)
2869 struct cam_path path;
2870 struct ccb_getdev cgd;
2871 struct async_node *cur_entry;
2873 cur_entry = (struct async_node *)arg;
2876 * Don't report unconfigured devices (Wildcard devs,
2877 * devices only for target mode, device instances
2878 * that have been invalidated but are waiting for
2879 * their last reference count to be released).
2881 if ((device->flags & CAM_DEV_UNCONFIGURED) != 0)
2884 xpt_compile_path(&path,
2886 device->target->bus->path_id,
2887 device->target->target_id,
2889 xpt_setup_ccb(&cgd.ccb_h, &path, /*priority*/1);
2890 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
2891 xpt_action((union ccb *)&cgd);
2892 cur_entry->callback(cur_entry->callback_arg,
2895 xpt_release_path(&path);
2901 xptsetasyncbusfunc(struct cam_eb *bus, void *arg)
2903 struct cam_path path;
2904 struct ccb_pathinq cpi;
2905 struct async_node *cur_entry;
2907 cur_entry = (struct async_node *)arg;
2909 xpt_compile_path(&path, /*periph*/NULL,
2911 CAM_TARGET_WILDCARD,
2913 xpt_setup_ccb(&cpi.ccb_h, &path, /*priority*/1);
2914 cpi.ccb_h.func_code = XPT_PATH_INQ;
2915 xpt_action((union ccb *)&cpi);
2916 cur_entry->callback(cur_entry->callback_arg,
2919 xpt_release_path(&path);
2925 xpt_action_sasync_cb(void *context, int pending)
2927 struct async_node *cur_entry;
2928 struct xpt_task *task;
2931 task = (struct xpt_task *)context;
2932 cur_entry = (struct async_node *)task->data1;
2933 added = task->data2;
2935 if ((added & AC_FOUND_DEVICE) != 0) {
2937 * Get this peripheral up to date with all
2938 * the currently existing devices.
2940 xpt_for_all_devices(xptsetasyncfunc, cur_entry);
2942 if ((added & AC_PATH_REGISTERED) != 0) {
2944 * Get this peripheral up to date with all
2945 * the currently existing busses.
2947 xpt_for_all_busses(xptsetasyncbusfunc, cur_entry);
2950 free(task, M_CAMXPT);
2954 xpt_action(union ccb *start_ccb)
2957 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("xpt_action\n"));
2959 start_ccb->ccb_h.status = CAM_REQ_INPROG;
2961 switch (start_ccb->ccb_h.func_code) {
2964 struct cam_ed *device;
2966 char cdb_str[(SCSI_MAX_CDBLEN * 3) + 1];
2967 struct cam_path *path;
2969 path = start_ccb->ccb_h.path;
2973 * For the sake of compatibility with SCSI-1
2974 * devices that may not understand the identify
2975 * message, we include lun information in the
2976 * second byte of all commands. SCSI-1 specifies
2977 * that luns are a 3 bit value and reserves only 3
2978 * bits for lun information in the CDB. Later
2979 * revisions of the SCSI spec allow for more than 8
2980 * luns, but have deprecated lun information in the
2981 * CDB. So, if the lun won't fit, we must omit.
2983 * Also be aware that during initial probing for devices,
2984 * the inquiry information is unknown but initialized to 0.
2985 * This means that this code will be exercised while probing
2986 * devices with an ANSI revision greater than 2.
2988 device = start_ccb->ccb_h.path->device;
2989 if (device->protocol_version <= SCSI_REV_2
2990 && start_ccb->ccb_h.target_lun < 8
2991 && (start_ccb->ccb_h.flags & CAM_CDB_POINTER) == 0) {
2993 start_ccb->csio.cdb_io.cdb_bytes[1] |=
2994 start_ccb->ccb_h.target_lun << 5;
2996 start_ccb->csio.scsi_status = SCSI_STATUS_OK;
2997 CAM_DEBUG(path, CAM_DEBUG_CDB,("%s. CDB: %s\n",
2998 scsi_op_desc(start_ccb->csio.cdb_io.cdb_bytes[0],
2999 &path->device->inq_data),
3000 scsi_cdb_string(start_ccb->csio.cdb_io.cdb_bytes,
3001 cdb_str, sizeof(cdb_str))));
3005 case XPT_CONT_TARGET_IO:
3006 start_ccb->csio.sense_resid = 0;
3007 start_ccb->csio.resid = 0;
3012 struct cam_path *path;
3015 path = start_ccb->ccb_h.path;
3017 cam_ccbq_insert_ccb(&path->device->ccbq, start_ccb);
3018 if (path->device->qfrozen_cnt == 0)
3019 runq = xpt_schedule_dev_sendq(path->bus, path->device);
3023 xpt_run_dev_sendq(path->bus);
3026 case XPT_SET_TRAN_SETTINGS:
3028 xpt_set_transfer_settings(&start_ccb->cts,
3029 start_ccb->ccb_h.path->device,
3030 /*async_update*/FALSE);
3033 case XPT_CALC_GEOMETRY:
3035 struct cam_sim *sim;
3037 /* Filter out garbage */
3038 if (start_ccb->ccg.block_size == 0
3039 || start_ccb->ccg.volume_size == 0) {
3040 start_ccb->ccg.cylinders = 0;
3041 start_ccb->ccg.heads = 0;
3042 start_ccb->ccg.secs_per_track = 0;
3043 start_ccb->ccb_h.status = CAM_REQ_CMP;
3048 * In a PC-98 system, geometry translation depens on
3049 * the "real" device geometry obtained from mode page 4.
3050 * SCSI geometry translation is performed in the
3051 * initialization routine of the SCSI BIOS and the result
3052 * stored in host memory. If the translation is available
3053 * in host memory, use it. If not, rely on the default
3054 * translation the device driver performs.
3056 if (scsi_da_bios_params(&start_ccb->ccg) != 0) {
3057 start_ccb->ccb_h.status = CAM_REQ_CMP;
3061 sim = start_ccb->ccb_h.path->bus->sim;
3062 (*(sim->sim_action))(sim, start_ccb);
3067 union ccb* abort_ccb;
3069 abort_ccb = start_ccb->cab.abort_ccb;
3070 if (XPT_FC_IS_DEV_QUEUED(abort_ccb)) {
3072 if (abort_ccb->ccb_h.pinfo.index >= 0) {
3073 struct cam_ccbq *ccbq;
3075 ccbq = &abort_ccb->ccb_h.path->device->ccbq;
3076 cam_ccbq_remove_ccb(ccbq, abort_ccb);
3077 abort_ccb->ccb_h.status =
3078 CAM_REQ_ABORTED|CAM_DEV_QFRZN;
3079 xpt_freeze_devq(abort_ccb->ccb_h.path, 1);
3080 xpt_done(abort_ccb);
3081 start_ccb->ccb_h.status = CAM_REQ_CMP;
3084 if (abort_ccb->ccb_h.pinfo.index == CAM_UNQUEUED_INDEX
3085 && (abort_ccb->ccb_h.status & CAM_SIM_QUEUED) == 0) {
3087 * We've caught this ccb en route to
3088 * the SIM. Flag it for abort and the
3089 * SIM will do so just before starting
3090 * real work on the CCB.
3092 abort_ccb->ccb_h.status =
3093 CAM_REQ_ABORTED|CAM_DEV_QFRZN;
3094 xpt_freeze_devq(abort_ccb->ccb_h.path, 1);
3095 start_ccb->ccb_h.status = CAM_REQ_CMP;
3099 if (XPT_FC_IS_QUEUED(abort_ccb)
3100 && (abort_ccb->ccb_h.pinfo.index == CAM_DONEQ_INDEX)) {
3102 * It's already completed but waiting
3103 * for our SWI to get to it.
3105 start_ccb->ccb_h.status = CAM_UA_ABORT;
3109 * If we weren't able to take care of the abort request
3110 * in the XPT, pass the request down to the SIM for processing.
3114 case XPT_ACCEPT_TARGET_IO:
3116 case XPT_IMMED_NOTIFY:
3117 case XPT_NOTIFY_ACK:
3118 case XPT_GET_TRAN_SETTINGS:
3121 struct cam_sim *sim;
3123 sim = start_ccb->ccb_h.path->bus->sim;
3124 (*(sim->sim_action))(sim, start_ccb);
3129 struct cam_sim *sim;
3131 sim = start_ccb->ccb_h.path->bus->sim;
3132 (*(sim->sim_action))(sim, start_ccb);
3135 case XPT_PATH_STATS:
3136 start_ccb->cpis.last_reset =
3137 start_ccb->ccb_h.path->bus->last_reset;
3138 start_ccb->ccb_h.status = CAM_REQ_CMP;
3144 dev = start_ccb->ccb_h.path->device;
3145 if ((dev->flags & CAM_DEV_UNCONFIGURED) != 0) {
3146 start_ccb->ccb_h.status = CAM_DEV_NOT_THERE;
3148 struct ccb_getdev *cgd;
3152 cgd = &start_ccb->cgd;
3153 bus = cgd->ccb_h.path->bus;
3154 tar = cgd->ccb_h.path->target;
3155 cgd->inq_data = dev->inq_data;
3156 cgd->ccb_h.status = CAM_REQ_CMP;
3157 cgd->serial_num_len = dev->serial_num_len;
3158 if ((dev->serial_num_len > 0)
3159 && (dev->serial_num != NULL))
3160 bcopy(dev->serial_num, cgd->serial_num,
3161 dev->serial_num_len);
3165 case XPT_GDEV_STATS:
3169 dev = start_ccb->ccb_h.path->device;
3170 if ((dev->flags & CAM_DEV_UNCONFIGURED) != 0) {
3171 start_ccb->ccb_h.status = CAM_DEV_NOT_THERE;
3173 struct ccb_getdevstats *cgds;
3177 cgds = &start_ccb->cgds;
3178 bus = cgds->ccb_h.path->bus;
3179 tar = cgds->ccb_h.path->target;
3180 cgds->dev_openings = dev->ccbq.dev_openings;
3181 cgds->dev_active = dev->ccbq.dev_active;
3182 cgds->devq_openings = dev->ccbq.devq_openings;
3183 cgds->devq_queued = dev->ccbq.queue.entries;
3184 cgds->held = dev->ccbq.held;
3185 cgds->last_reset = tar->last_reset;
3186 cgds->maxtags = dev->quirk->maxtags;
3187 cgds->mintags = dev->quirk->mintags;
3188 if (timevalcmp(&tar->last_reset, &bus->last_reset, <))
3189 cgds->last_reset = bus->last_reset;
3190 cgds->ccb_h.status = CAM_REQ_CMP;
3196 struct cam_periph *nperiph;
3197 struct periph_list *periph_head;
3198 struct ccb_getdevlist *cgdl;
3200 struct cam_ed *device;
3207 * Don't want anyone mucking with our data.
3209 device = start_ccb->ccb_h.path->device;
3210 periph_head = &device->periphs;
3211 cgdl = &start_ccb->cgdl;
3214 * Check and see if the list has changed since the user
3215 * last requested a list member. If so, tell them that the
3216 * list has changed, and therefore they need to start over
3217 * from the beginning.
3219 if ((cgdl->index != 0) &&
3220 (cgdl->generation != device->generation)) {
3221 cgdl->status = CAM_GDEVLIST_LIST_CHANGED;
3226 * Traverse the list of peripherals and attempt to find
3227 * the requested peripheral.
3229 for (nperiph = SLIST_FIRST(periph_head), i = 0;
3230 (nperiph != NULL) && (i <= cgdl->index);
3231 nperiph = SLIST_NEXT(nperiph, periph_links), i++) {
3232 if (i == cgdl->index) {
3233 strncpy(cgdl->periph_name,
3234 nperiph->periph_name,
3236 cgdl->unit_number = nperiph->unit_number;
3241 cgdl->status = CAM_GDEVLIST_ERROR;
3245 if (nperiph == NULL)
3246 cgdl->status = CAM_GDEVLIST_LAST_DEVICE;
3248 cgdl->status = CAM_GDEVLIST_MORE_DEVS;
3251 cgdl->generation = device->generation;
3253 cgdl->ccb_h.status = CAM_REQ_CMP;
3258 dev_pos_type position_type;
3259 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:
3302 case CAM_DEV_POS_PDRV:
3303 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 free(cur_entry, M_CAMXPT);
3352 cur_entry->event_enable = csa->event_enable;
3355 cur_entry = malloc(sizeof(*cur_entry), M_CAMXPT,
3357 if (cur_entry == NULL) {
3358 csa->ccb_h.status = CAM_RESRC_UNAVAIL;
3361 cur_entry->event_enable = csa->event_enable;
3362 cur_entry->callback_arg = csa->callback_arg;
3363 cur_entry->callback = csa->callback;
3364 SLIST_INSERT_HEAD(async_head, cur_entry, links);
3365 csa->ccb_h.path->device->refcount++;
3369 * Need to decouple this operation via a taqskqueue so that
3370 * the locking doesn't become a mess.
3372 if ((added & (AC_FOUND_DEVICE | AC_PATH_REGISTERED)) != 0) {
3373 struct xpt_task *task;
3375 task = malloc(sizeof(struct xpt_task), M_CAMXPT,
3378 csa->ccb_h.status = CAM_RESRC_UNAVAIL;
3382 TASK_INIT(&task->task, 0, xpt_action_sasync_cb, task);
3383 task->data1 = cur_entry;
3384 task->data2 = added;
3385 taskqueue_enqueue(taskqueue_thread, &task->task);
3388 start_ccb->ccb_h.status = CAM_REQ_CMP;
3393 struct ccb_relsim *crs;
3396 crs = &start_ccb->crs;
3397 dev = crs->ccb_h.path->device;
3400 crs->ccb_h.status = CAM_DEV_NOT_THERE;
3404 if ((crs->release_flags & RELSIM_ADJUST_OPENINGS) != 0) {
3406 if (INQ_DATA_TQ_ENABLED(&dev->inq_data)) {
3407 /* Don't ever go below one opening */
3408 if (crs->openings > 0) {
3409 xpt_dev_ccbq_resize(crs->ccb_h.path,
3413 xpt_print(crs->ccb_h.path,
3414 "tagged openings now %d\n",
3421 if ((crs->release_flags & RELSIM_RELEASE_AFTER_TIMEOUT) != 0) {
3423 if ((dev->flags & CAM_DEV_REL_TIMEOUT_PENDING) != 0) {
3426 * Just extend the old timeout and decrement
3427 * the freeze count so that a single timeout
3428 * is sufficient for releasing the queue.
3430 start_ccb->ccb_h.flags &= ~CAM_DEV_QFREEZE;
3431 callout_stop(&dev->callout);
3434 start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
3437 callout_reset(&dev->callout,
3438 (crs->release_timeout * hz) / 1000,
3439 xpt_release_devq_timeout, dev);
3441 dev->flags |= CAM_DEV_REL_TIMEOUT_PENDING;
3445 if ((crs->release_flags & RELSIM_RELEASE_AFTER_CMDCMPLT) != 0) {
3447 if ((dev->flags & CAM_DEV_REL_ON_COMPLETE) != 0) {
3449 * Decrement the freeze count so that a single
3450 * completion is still sufficient to unfreeze
3453 start_ccb->ccb_h.flags &= ~CAM_DEV_QFREEZE;
3456 dev->flags |= CAM_DEV_REL_ON_COMPLETE;
3457 start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
3461 if ((crs->release_flags & RELSIM_RELEASE_AFTER_QEMPTY) != 0) {
3463 if ((dev->flags & CAM_DEV_REL_ON_QUEUE_EMPTY) != 0
3464 || (dev->ccbq.dev_active == 0)) {
3466 start_ccb->ccb_h.flags &= ~CAM_DEV_QFREEZE;
3469 dev->flags |= CAM_DEV_REL_ON_QUEUE_EMPTY;
3470 start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
3474 if ((start_ccb->ccb_h.flags & CAM_DEV_QFREEZE) == 0) {
3476 xpt_release_devq(crs->ccb_h.path, /*count*/1,
3479 start_ccb->crs.qfrozen_cnt = dev->qfrozen_cnt;
3480 start_ccb->ccb_h.status = CAM_REQ_CMP;
3484 xpt_scan_bus(start_ccb->ccb_h.path->periph, start_ccb);
3487 xpt_scan_lun(start_ccb->ccb_h.path->periph,
3488 start_ccb->ccb_h.path, start_ccb->crcn.flags,
3493 #ifdef CAM_DEBUG_DELAY
3494 cam_debug_delay = CAM_DEBUG_DELAY;
3496 cam_dflags = start_ccb->cdbg.flags;
3497 if (cam_dpath != NULL) {
3498 xpt_free_path(cam_dpath);
3502 if (cam_dflags != CAM_DEBUG_NONE) {
3503 if (xpt_create_path(&cam_dpath, xpt_periph,
3504 start_ccb->ccb_h.path_id,
3505 start_ccb->ccb_h.target_id,
3506 start_ccb->ccb_h.target_lun) !=
3508 start_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
3509 cam_dflags = CAM_DEBUG_NONE;
3511 start_ccb->ccb_h.status = CAM_REQ_CMP;
3512 xpt_print(cam_dpath, "debugging flags now %x\n",
3517 start_ccb->ccb_h.status = CAM_REQ_CMP;
3519 #else /* !CAMDEBUG */
3520 start_ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
3521 #endif /* CAMDEBUG */
3525 if ((start_ccb->ccb_h.flags & CAM_DEV_QFREEZE) != 0)
3526 xpt_freeze_devq(start_ccb->ccb_h.path, 1);
3527 start_ccb->ccb_h.status = CAM_REQ_CMP;
3534 start_ccb->ccb_h.status = CAM_PROVIDE_FAIL;
3540 xpt_polled_action(union ccb *start_ccb)
3543 struct cam_sim *sim;
3544 struct cam_devq *devq;
3548 timeout = start_ccb->ccb_h.timeout;
3549 sim = start_ccb->ccb_h.path->bus->sim;
3551 dev = start_ccb->ccb_h.path->device;
3553 mtx_assert(sim->mtx, MA_OWNED);
3556 * Steal an opening so that no other queued requests
3557 * can get it before us while we simulate interrupts.
3559 dev->ccbq.devq_openings--;
3560 dev->ccbq.dev_openings--;
3562 while(((devq != NULL && devq->send_openings <= 0) ||
3563 dev->ccbq.dev_openings < 0) && (--timeout > 0)) {
3565 (*(sim->sim_poll))(sim);
3566 camisr_runqueue(&sim->sim_doneq);
3569 dev->ccbq.devq_openings++;
3570 dev->ccbq.dev_openings++;
3573 xpt_action(start_ccb);
3574 while(--timeout > 0) {
3575 (*(sim->sim_poll))(sim);
3576 camisr_runqueue(&sim->sim_doneq);
3577 if ((start_ccb->ccb_h.status & CAM_STATUS_MASK)
3584 * XXX Is it worth adding a sim_timeout entry
3585 * point so we can attempt recovery? If
3586 * this is only used for dumps, I don't think
3589 start_ccb->ccb_h.status = CAM_CMD_TIMEOUT;
3592 start_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
3597 * Schedule a peripheral driver to receive a ccb when it's
3598 * target device has space for more transactions.
3601 xpt_schedule(struct cam_periph *perph, u_int32_t new_priority)
3603 struct cam_ed *device;
3606 mtx_assert(perph->sim->mtx, MA_OWNED);
3608 CAM_DEBUG(perph->path, CAM_DEBUG_TRACE, ("xpt_schedule\n"));
3609 device = perph->path->device;
3610 if (periph_is_queued(perph)) {
3611 /* Simply reorder based on new priority */
3612 CAM_DEBUG(perph->path, CAM_DEBUG_SUBTRACE,
3613 (" change priority to %d\n", new_priority));
3614 if (new_priority < perph->pinfo.priority) {
3615 camq_change_priority(&device->drvq,
3621 /* New entry on the queue */
3622 CAM_DEBUG(perph->path, CAM_DEBUG_SUBTRACE,
3623 (" added periph to queue\n"));
3624 perph->pinfo.priority = new_priority;
3625 perph->pinfo.generation = ++device->drvq.generation;
3626 camq_insert(&device->drvq, &perph->pinfo);
3627 runq = xpt_schedule_dev_allocq(perph->path->bus, device);
3630 CAM_DEBUG(perph->path, CAM_DEBUG_SUBTRACE,
3631 (" calling xpt_run_devq\n"));
3632 xpt_run_dev_allocq(perph->path->bus);
3638 * Schedule a device to run on a given queue.
3639 * If the device was inserted as a new entry on the queue,
3640 * return 1 meaning the device queue should be run. If we
3641 * were already queued, implying someone else has already
3642 * started the queue, return 0 so the caller doesn't attempt
3646 xpt_schedule_dev(struct camq *queue, cam_pinfo *pinfo,
3647 u_int32_t new_priority)
3650 u_int32_t old_priority;
3652 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_schedule_dev\n"));
3654 old_priority = pinfo->priority;
3657 * Are we already queued?
3659 if (pinfo->index != CAM_UNQUEUED_INDEX) {
3660 /* Simply reorder based on new priority */
3661 if (new_priority < old_priority) {
3662 camq_change_priority(queue, pinfo->index,
3664 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3665 ("changed priority to %d\n",
3670 /* New entry on the queue */
3671 if (new_priority < old_priority)
3672 pinfo->priority = new_priority;
3674 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3675 ("Inserting onto queue\n"));
3676 pinfo->generation = ++queue->generation;
3677 camq_insert(queue, pinfo);
3684 xpt_run_dev_allocq(struct cam_eb *bus)
3686 struct cam_devq *devq;
3688 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_run_dev_allocq\n"));
3689 devq = bus->sim->devq;
3691 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3692 (" qfrozen_cnt == 0x%x, entries == %d, "
3693 "openings == %d, active == %d\n",
3694 devq->alloc_queue.qfrozen_cnt,
3695 devq->alloc_queue.entries,
3696 devq->alloc_openings,
3697 devq->alloc_active));
3699 devq->alloc_queue.qfrozen_cnt++;
3700 while ((devq->alloc_queue.entries > 0)
3701 && (devq->alloc_openings > 0)
3702 && (devq->alloc_queue.qfrozen_cnt <= 1)) {
3703 struct cam_ed_qinfo *qinfo;
3704 struct cam_ed *device;
3705 union ccb *work_ccb;
3706 struct cam_periph *drv;
3709 qinfo = (struct cam_ed_qinfo *)camq_remove(&devq->alloc_queue,
3711 device = qinfo->device;
3713 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3714 ("running device %p\n", device));
3716 drvq = &device->drvq;
3719 if (drvq->entries <= 0) {
3720 panic("xpt_run_dev_allocq: "
3721 "Device on queue without any work to do");
3724 if ((work_ccb = xpt_get_ccb(device)) != NULL) {
3725 devq->alloc_openings--;
3726 devq->alloc_active++;
3727 drv = (struct cam_periph*)camq_remove(drvq, CAMQ_HEAD);
3728 xpt_setup_ccb(&work_ccb->ccb_h, drv->path,
3729 drv->pinfo.priority);
3730 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3731 ("calling periph start\n"));
3732 drv->periph_start(drv, work_ccb);
3735 * Malloc failure in alloc_ccb
3738 * XXX add us to a list to be run from free_ccb
3739 * if we don't have any ccbs active on this
3740 * device queue otherwise we may never get run
3746 if (drvq->entries > 0) {
3747 /* We have more work. Attempt to reschedule */
3748 xpt_schedule_dev_allocq(bus, device);
3751 devq->alloc_queue.qfrozen_cnt--;
3755 xpt_run_dev_sendq(struct cam_eb *bus)
3757 struct cam_devq *devq;
3759 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_run_dev_sendq\n"));
3761 devq = bus->sim->devq;
3763 devq->send_queue.qfrozen_cnt++;
3764 while ((devq->send_queue.entries > 0)
3765 && (devq->send_openings > 0)) {
3766 struct cam_ed_qinfo *qinfo;
3767 struct cam_ed *device;
3768 union ccb *work_ccb;
3769 struct cam_sim *sim;
3771 if (devq->send_queue.qfrozen_cnt > 1) {
3775 qinfo = (struct cam_ed_qinfo *)camq_remove(&devq->send_queue,
3777 device = qinfo->device;
3780 * If the device has been "frozen", don't attempt
3783 if (device->qfrozen_cnt > 0) {
3787 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3788 ("running device %p\n", device));
3790 work_ccb = cam_ccbq_peek_ccb(&device->ccbq, CAMQ_HEAD);
3791 if (work_ccb == NULL) {
3792 printf("device on run queue with no ccbs???\n");
3796 if ((work_ccb->ccb_h.flags & CAM_HIGH_POWER) != 0) {
3798 mtx_lock(&xsoftc.xpt_lock);
3799 if (xsoftc.num_highpower <= 0) {
3801 * We got a high power command, but we
3802 * don't have any available slots. Freeze
3803 * the device queue until we have a slot
3806 device->qfrozen_cnt++;
3807 STAILQ_INSERT_TAIL(&xsoftc.highpowerq,
3811 mtx_unlock(&xsoftc.xpt_lock);
3815 * Consume a high power slot while
3818 xsoftc.num_highpower--;
3820 mtx_unlock(&xsoftc.xpt_lock);
3822 devq->active_dev = device;
3823 cam_ccbq_remove_ccb(&device->ccbq, work_ccb);
3825 cam_ccbq_send_ccb(&device->ccbq, work_ccb);
3827 devq->send_openings--;
3828 devq->send_active++;
3830 if (device->ccbq.queue.entries > 0)
3831 xpt_schedule_dev_sendq(bus, device);
3833 if (work_ccb && (work_ccb->ccb_h.flags & CAM_DEV_QFREEZE) != 0){
3835 * The client wants to freeze the queue
3836 * after this CCB is sent.
3838 device->qfrozen_cnt++;
3841 /* In Target mode, the peripheral driver knows best... */
3842 if (work_ccb->ccb_h.func_code == XPT_SCSI_IO) {
3843 if ((device->inq_flags & SID_CmdQue) != 0
3844 && work_ccb->csio.tag_action != CAM_TAG_ACTION_NONE)
3845 work_ccb->ccb_h.flags |= CAM_TAG_ACTION_VALID;
3848 * Clear this in case of a retried CCB that
3849 * failed due to a rejected tag.
3851 work_ccb->ccb_h.flags &= ~CAM_TAG_ACTION_VALID;
3855 * Device queues can be shared among multiple sim instances
3856 * that reside on different busses. Use the SIM in the queue
3857 * CCB's path, rather than the one in the bus that was passed
3858 * into this function.
3860 sim = work_ccb->ccb_h.path->bus->sim;
3861 (*(sim->sim_action))(sim, work_ccb);
3863 devq->active_dev = NULL;
3865 devq->send_queue.qfrozen_cnt--;
3869 * This function merges stuff from the slave ccb into the master ccb, while
3870 * keeping important fields in the master ccb constant.
3873 xpt_merge_ccb(union ccb *master_ccb, union ccb *slave_ccb)
3877 * Pull fields that are valid for peripheral drivers to set
3878 * into the master CCB along with the CCB "payload".
3880 master_ccb->ccb_h.retry_count = slave_ccb->ccb_h.retry_count;
3881 master_ccb->ccb_h.func_code = slave_ccb->ccb_h.func_code;
3882 master_ccb->ccb_h.timeout = slave_ccb->ccb_h.timeout;
3883 master_ccb->ccb_h.flags = slave_ccb->ccb_h.flags;
3884 bcopy(&(&slave_ccb->ccb_h)[1], &(&master_ccb->ccb_h)[1],
3885 sizeof(union ccb) - sizeof(struct ccb_hdr));
3889 xpt_setup_ccb(struct ccb_hdr *ccb_h, struct cam_path *path, u_int32_t priority)
3892 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_setup_ccb\n"));
3893 ccb_h->pinfo.priority = priority;
3895 ccb_h->path_id = path->bus->path_id;
3897 ccb_h->target_id = path->target->target_id;
3899 ccb_h->target_id = CAM_TARGET_WILDCARD;
3901 ccb_h->target_lun = path->device->lun_id;
3902 ccb_h->pinfo.generation = ++path->device->ccbq.queue.generation;
3904 ccb_h->target_lun = CAM_TARGET_WILDCARD;
3906 ccb_h->pinfo.index = CAM_UNQUEUED_INDEX;
3910 /* Path manipulation functions */
3912 xpt_create_path(struct cam_path **new_path_ptr, struct cam_periph *perph,
3913 path_id_t path_id, target_id_t target_id, lun_id_t lun_id)
3915 struct cam_path *path;
3918 path = (struct cam_path *)malloc(sizeof(*path), M_CAMXPT, M_NOWAIT);
3921 status = CAM_RESRC_UNAVAIL;
3924 status = xpt_compile_path(path, perph, path_id, target_id, lun_id);
3925 if (status != CAM_REQ_CMP) {
3926 free(path, M_CAMXPT);
3929 *new_path_ptr = path;
3934 xpt_create_path_unlocked(struct cam_path **new_path_ptr,
3935 struct cam_periph *periph, path_id_t path_id,
3936 target_id_t target_id, lun_id_t lun_id)
3938 struct cam_path *path;
3939 struct cam_eb *bus = NULL;
3941 int need_unlock = 0;
3943 path = (struct cam_path *)malloc(sizeof(*path), M_CAMXPT, M_WAITOK);
3945 if (path_id != CAM_BUS_WILDCARD) {
3946 bus = xpt_find_bus(path_id);
3949 CAM_SIM_LOCK(bus->sim);
3952 status = xpt_compile_path(path, periph, path_id, target_id, lun_id);
3954 CAM_SIM_UNLOCK(bus->sim);
3955 if (status != CAM_REQ_CMP) {
3956 free(path, M_CAMXPT);
3959 *new_path_ptr = path;
3964 xpt_compile_path(struct cam_path *new_path, struct cam_periph *perph,
3965 path_id_t path_id, target_id_t target_id, lun_id_t lun_id)
3968 struct cam_et *target;
3969 struct cam_ed *device;
3972 status = CAM_REQ_CMP; /* Completed without error */
3973 target = NULL; /* Wildcarded */
3974 device = NULL; /* Wildcarded */
3977 * We will potentially modify the EDT, so block interrupts
3978 * that may attempt to create cam paths.
3980 bus = xpt_find_bus(path_id);
3982 status = CAM_PATH_INVALID;
3984 target = xpt_find_target(bus, target_id);
3985 if (target == NULL) {
3987 struct cam_et *new_target;
3989 new_target = xpt_alloc_target(bus, target_id);
3990 if (new_target == NULL) {
3991 status = CAM_RESRC_UNAVAIL;
3993 target = new_target;
3996 if (target != NULL) {
3997 device = xpt_find_device(target, lun_id);
3998 if (device == NULL) {
4000 struct cam_ed *new_device;
4002 new_device = xpt_alloc_device(bus,
4005 if (new_device == NULL) {
4006 status = CAM_RESRC_UNAVAIL;
4008 device = new_device;
4015 * Only touch the user's data if we are successful.
4017 if (status == CAM_REQ_CMP) {
4018 new_path->periph = perph;
4019 new_path->bus = bus;
4020 new_path->target = target;
4021 new_path->device = device;
4022 CAM_DEBUG(new_path, CAM_DEBUG_TRACE, ("xpt_compile_path\n"));
4025 xpt_release_device(bus, target, device);
4027 xpt_release_target(bus, target);
4029 xpt_release_bus(bus);
4035 xpt_release_path(struct cam_path *path)
4037 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_release_path\n"));
4038 if (path->device != NULL) {
4039 xpt_release_device(path->bus, path->target, path->device);
4040 path->device = NULL;
4042 if (path->target != NULL) {
4043 xpt_release_target(path->bus, path->target);
4044 path->target = NULL;
4046 if (path->bus != NULL) {
4047 xpt_release_bus(path->bus);
4053 xpt_free_path(struct cam_path *path)
4056 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_free_path\n"));
4057 xpt_release_path(path);
4058 free(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 printf("(nopath): ");
4107 if (path->periph != NULL)
4108 printf("(%s%d:", path->periph->periph_name,
4109 path->periph->unit_number);
4111 printf("(noperiph:");
4113 if (path->bus != NULL)
4114 printf("%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 printf("%d:", path->target->target_id);
4125 if (path->device != NULL)
4126 printf("%d): ", path->device->lun_id);
4133 xpt_print(struct cam_path *path, const char *fmt, ...)
4136 xpt_print_path(path);
4143 xpt_path_string(struct cam_path *path, char *str, size_t str_len)
4147 mtx_assert(path->bus->sim->mtx, MA_OWNED);
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 mtx_assert(path->bus->sim->mtx, MA_OWNED);
4187 return(path->bus->path_id);
4191 xpt_path_target_id(struct cam_path *path)
4193 mtx_assert(path->bus->sim->mtx, MA_OWNED);
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 mtx_assert(path->bus->sim->mtx, MA_OWNED);
4206 if (path->device != NULL)
4207 return (path->device->lun_id);
4209 return (CAM_LUN_WILDCARD);
4213 xpt_path_sim(struct cam_path *path)
4216 return (path->bus->sim);
4220 xpt_path_periph(struct cam_path *path)
4222 mtx_assert(path->bus->sim->mtx, MA_OWNED);
4224 return (path->periph);
4228 * Release a CAM control block for the caller. Remit the cost of the structure
4229 * to the device referenced by the path. If the this device had no 'credits'
4230 * and peripheral drivers have registered async callbacks for this notification
4234 xpt_release_ccb(union ccb *free_ccb)
4236 struct cam_path *path;
4237 struct cam_ed *device;
4239 struct cam_sim *sim;
4241 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_release_ccb\n"));
4242 path = free_ccb->ccb_h.path;
4243 device = path->device;
4247 mtx_assert(sim->mtx, MA_OWNED);
4249 cam_ccbq_release_opening(&device->ccbq);
4250 if (sim->ccb_count > sim->max_ccbs) {
4251 xpt_free_ccb(free_ccb);
4254 SLIST_INSERT_HEAD(&sim->ccb_freeq, &free_ccb->ccb_h,
4257 if (sim->devq == NULL) {
4260 sim->devq->alloc_openings++;
4261 sim->devq->alloc_active--;
4262 /* XXX Turn this into an inline function - xpt_run_device?? */
4263 if ((device_is_alloc_queued(device) == 0)
4264 && (device->drvq.entries > 0)) {
4265 xpt_schedule_dev_allocq(bus, device);
4267 if (dev_allocq_is_runnable(sim->devq))
4268 xpt_run_dev_allocq(bus);
4271 /* Functions accessed by SIM drivers */
4274 * A sim structure, listing the SIM entry points and instance
4275 * identification info is passed to xpt_bus_register to hook the SIM
4276 * into the CAM framework. xpt_bus_register creates a cam_eb entry
4277 * for this new bus and places it in the array of busses and assigns
4278 * it a path_id. The path_id may be influenced by "hard wiring"
4279 * information specified by the user. Once interrupt services are
4280 * availible, the bus will be probed.
4283 xpt_bus_register(struct cam_sim *sim, device_t parent, u_int32_t bus)
4285 struct cam_eb *new_bus;
4286 struct cam_eb *old_bus;
4287 struct ccb_pathinq cpi;
4289 mtx_assert(sim->mtx, MA_OWNED);
4292 new_bus = (struct cam_eb *)malloc(sizeof(*new_bus),
4293 M_CAMXPT, M_NOWAIT);
4294 if (new_bus == NULL) {
4295 /* Couldn't satisfy request */
4296 return (CAM_RESRC_UNAVAIL);
4299 if (strcmp(sim->sim_name, "xpt") != 0) {
4302 xptpathid(sim->sim_name, sim->unit_number, sim->bus_id);
4305 TAILQ_INIT(&new_bus->et_entries);
4306 new_bus->path_id = sim->path_id;
4309 timevalclear(&new_bus->last_reset);
4311 new_bus->refcount = 1; /* Held until a bus_deregister event */
4312 new_bus->generation = 0;
4313 mtx_lock(&xsoftc.xpt_topo_lock);
4314 old_bus = TAILQ_FIRST(&xsoftc.xpt_busses);
4315 while (old_bus != NULL
4316 && old_bus->path_id < new_bus->path_id)
4317 old_bus = TAILQ_NEXT(old_bus, links);
4318 if (old_bus != NULL)
4319 TAILQ_INSERT_BEFORE(old_bus, new_bus, links);
4321 TAILQ_INSERT_TAIL(&xsoftc.xpt_busses, new_bus, links);
4322 xsoftc.bus_generation++;
4323 mtx_unlock(&xsoftc.xpt_topo_lock);
4325 /* Notify interested parties */
4326 if (sim->path_id != CAM_XPT_PATH_ID) {
4327 struct cam_path path;
4329 xpt_compile_path(&path, /*periph*/NULL, sim->path_id,
4330 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
4331 xpt_setup_ccb(&cpi.ccb_h, &path, /*priority*/1);
4332 cpi.ccb_h.func_code = XPT_PATH_INQ;
4333 xpt_action((union ccb *)&cpi);
4334 xpt_async(AC_PATH_REGISTERED, &path, &cpi);
4335 xpt_release_path(&path);
4337 return (CAM_SUCCESS);
4341 xpt_bus_deregister(path_id_t pathid)
4343 struct cam_path bus_path;
4346 status = xpt_compile_path(&bus_path, NULL, pathid,
4347 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
4348 if (status != CAM_REQ_CMP)
4351 xpt_async(AC_LOST_DEVICE, &bus_path, NULL);
4352 xpt_async(AC_PATH_DEREGISTERED, &bus_path, NULL);
4354 /* Release the reference count held while registered. */
4355 xpt_release_bus(bus_path.bus);
4356 xpt_release_path(&bus_path);
4358 return (CAM_REQ_CMP);
4362 xptnextfreepathid(void)
4369 mtx_lock(&xsoftc.xpt_topo_lock);
4370 bus = TAILQ_FIRST(&xsoftc.xpt_busses);
4372 /* Find an unoccupied pathid */
4373 while (bus != NULL && bus->path_id <= pathid) {
4374 if (bus->path_id == pathid)
4376 bus = TAILQ_NEXT(bus, links);
4378 mtx_unlock(&xsoftc.xpt_topo_lock);
4381 * Ensure that this pathid is not reserved for
4382 * a bus that may be registered in the future.
4384 if (resource_string_value("scbus", pathid, "at", &strval) == 0) {
4386 /* Start the search over */
4387 mtx_lock(&xsoftc.xpt_topo_lock);
4394 xptpathid(const char *sim_name, int sim_unit, int sim_bus)
4401 pathid = CAM_XPT_PATH_ID;
4402 snprintf(buf, sizeof(buf), "%s%d", sim_name, sim_unit);
4404 while ((resource_find_match(&i, &dname, &dunit, "at", buf)) == 0) {
4405 if (strcmp(dname, "scbus")) {
4406 /* Avoid a bit of foot shooting. */
4409 if (dunit < 0) /* unwired?! */
4411 if (resource_int_value("scbus", dunit, "bus", &val) == 0) {
4412 if (sim_bus == val) {
4416 } else if (sim_bus == 0) {
4417 /* Unspecified matches bus 0 */
4421 printf("Ambiguous scbus configuration for %s%d "
4422 "bus %d, cannot wire down. The kernel "
4423 "config entry for scbus%d should "
4424 "specify a controller bus.\n"
4425 "Scbus will be assigned dynamically.\n",
4426 sim_name, sim_unit, sim_bus, dunit);
4431 if (pathid == CAM_XPT_PATH_ID)
4432 pathid = xptnextfreepathid();
4437 xpt_async(u_int32_t async_code, struct cam_path *path, void *async_arg)
4440 struct cam_et *target, *next_target;
4441 struct cam_ed *device, *next_device;
4443 mtx_assert(path->bus->sim->mtx, MA_OWNED);
4445 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_async\n"));
4448 * Most async events come from a CAM interrupt context. In
4449 * a few cases, the error recovery code at the peripheral layer,
4450 * which may run from our SWI or a process context, may signal
4451 * deferred events with a call to xpt_async.
4456 if (async_code == AC_BUS_RESET) {
4457 /* Update our notion of when the last reset occurred */
4458 microtime(&bus->last_reset);
4461 for (target = TAILQ_FIRST(&bus->et_entries);
4463 target = next_target) {
4465 next_target = TAILQ_NEXT(target, links);
4467 if (path->target != target
4468 && path->target->target_id != CAM_TARGET_WILDCARD
4469 && target->target_id != CAM_TARGET_WILDCARD)
4472 if (async_code == AC_SENT_BDR) {
4473 /* Update our notion of when the last reset occurred */
4474 microtime(&path->target->last_reset);
4477 for (device = TAILQ_FIRST(&target->ed_entries);
4479 device = next_device) {
4481 next_device = TAILQ_NEXT(device, links);
4483 if (path->device != device
4484 && path->device->lun_id != CAM_LUN_WILDCARD
4485 && device->lun_id != CAM_LUN_WILDCARD)
4488 xpt_dev_async(async_code, bus, target,
4491 xpt_async_bcast(&device->asyncs, async_code,
4497 * If this wasn't a fully wildcarded async, tell all
4498 * clients that want all async events.
4500 if (bus != xpt_periph->path->bus)
4501 xpt_async_bcast(&xpt_periph->path->device->asyncs, async_code,
4506 xpt_async_bcast(struct async_list *async_head,
4507 u_int32_t async_code,
4508 struct cam_path *path, void *async_arg)
4510 struct async_node *cur_entry;
4512 cur_entry = SLIST_FIRST(async_head);
4513 while (cur_entry != NULL) {
4514 struct async_node *next_entry;
4516 * Grab the next list entry before we call the current
4517 * entry's callback. This is because the callback function
4518 * can delete its async callback entry.
4520 next_entry = SLIST_NEXT(cur_entry, links);
4521 if ((cur_entry->event_enable & async_code) != 0)
4522 cur_entry->callback(cur_entry->callback_arg,
4525 cur_entry = next_entry;
4530 * Handle any per-device event notifications that require action by the XPT.
4533 xpt_dev_async(u_int32_t async_code, struct cam_eb *bus, struct cam_et *target,
4534 struct cam_ed *device, void *async_arg)
4537 struct cam_path newpath;
4540 * We only need to handle events for real devices.
4542 if (target->target_id == CAM_TARGET_WILDCARD
4543 || device->lun_id == CAM_LUN_WILDCARD)
4547 * We need our own path with wildcards expanded to
4548 * handle certain types of events.
4550 if ((async_code == AC_SENT_BDR)
4551 || (async_code == AC_BUS_RESET)
4552 || (async_code == AC_INQ_CHANGED))
4553 status = xpt_compile_path(&newpath, NULL,
4558 status = CAM_REQ_CMP_ERR;
4560 if (status == CAM_REQ_CMP) {
4563 * Allow transfer negotiation to occur in a
4564 * tag free environment.
4566 if (async_code == AC_SENT_BDR
4567 || async_code == AC_BUS_RESET)
4568 xpt_toggle_tags(&newpath);
4570 if (async_code == AC_INQ_CHANGED) {
4572 * We've sent a start unit command, or
4573 * something similar to a device that
4574 * may have caused its inquiry data to
4575 * change. So we re-scan the device to
4576 * refresh the inquiry data for it.
4578 xpt_scan_lun(newpath.periph, &newpath,
4579 CAM_EXPECT_INQ_CHANGE, NULL);
4581 xpt_release_path(&newpath);
4582 } else if (async_code == AC_LOST_DEVICE) {
4583 device->flags |= CAM_DEV_UNCONFIGURED;
4584 } else if (async_code == AC_TRANSFER_NEG) {
4585 struct ccb_trans_settings *settings;
4587 settings = (struct ccb_trans_settings *)async_arg;
4588 xpt_set_transfer_settings(settings, device,
4589 /*async_update*/TRUE);
4594 xpt_freeze_devq(struct cam_path *path, u_int count)
4596 struct ccb_hdr *ccbh;
4598 mtx_assert(path->bus->sim->mtx, MA_OWNED);
4600 path->device->qfrozen_cnt += count;
4603 * Mark the last CCB in the queue as needing
4604 * to be requeued if the driver hasn't
4605 * changed it's state yet. This fixes a race
4606 * where a ccb is just about to be queued to
4607 * a controller driver when it's interrupt routine
4608 * freezes the queue. To completly close the
4609 * hole, controller drives must check to see
4610 * if a ccb's status is still CAM_REQ_INPROG
4611 * just before they queue
4612 * the CCB. See ahc_action/ahc_freeze_devq for
4615 ccbh = TAILQ_LAST(&path->device->ccbq.active_ccbs, ccb_hdr_tailq);
4616 if (ccbh && ccbh->status == CAM_REQ_INPROG)
4617 ccbh->status = CAM_REQUEUE_REQ;
4618 return (path->device->qfrozen_cnt);
4622 xpt_freeze_simq(struct cam_sim *sim, u_int count)
4624 mtx_assert(sim->mtx, MA_OWNED);
4626 sim->devq->send_queue.qfrozen_cnt += count;
4627 if (sim->devq->active_dev != NULL) {
4628 struct ccb_hdr *ccbh;
4630 ccbh = TAILQ_LAST(&sim->devq->active_dev->ccbq.active_ccbs,
4632 if (ccbh && ccbh->status == CAM_REQ_INPROG)
4633 ccbh->status = CAM_REQUEUE_REQ;
4635 return (sim->devq->send_queue.qfrozen_cnt);
4639 xpt_release_devq_timeout(void *arg)
4641 struct cam_ed *device;
4643 device = (struct cam_ed *)arg;
4645 xpt_release_devq_device(device, /*count*/1, /*run_queue*/TRUE);
4649 xpt_release_devq(struct cam_path *path, u_int count, int run_queue)
4651 mtx_assert(path->bus->sim->mtx, MA_OWNED);
4653 xpt_release_devq_device(path->device, count, run_queue);
4657 xpt_release_devq_device(struct cam_ed *dev, u_int count, int run_queue)
4662 if (dev->qfrozen_cnt > 0) {
4664 count = (count > dev->qfrozen_cnt) ? dev->qfrozen_cnt : count;
4665 dev->qfrozen_cnt -= count;
4666 if (dev->qfrozen_cnt == 0) {
4669 * No longer need to wait for a successful
4670 * command completion.
4672 dev->flags &= ~CAM_DEV_REL_ON_COMPLETE;
4675 * Remove any timeouts that might be scheduled
4676 * to release this queue.
4678 if ((dev->flags & CAM_DEV_REL_TIMEOUT_PENDING) != 0) {
4679 callout_stop(&dev->callout);
4680 dev->flags &= ~CAM_DEV_REL_TIMEOUT_PENDING;
4684 * Now that we are unfrozen schedule the
4685 * device so any pending transactions are
4688 if ((dev->ccbq.queue.entries > 0)
4689 && (xpt_schedule_dev_sendq(dev->target->bus, dev))
4690 && (run_queue != 0)) {
4696 xpt_run_dev_sendq(dev->target->bus);
4700 xpt_release_simq(struct cam_sim *sim, int run_queue)
4704 mtx_assert(sim->mtx, MA_OWNED);
4706 sendq = &(sim->devq->send_queue);
4707 if (sendq->qfrozen_cnt > 0) {
4709 sendq->qfrozen_cnt--;
4710 if (sendq->qfrozen_cnt == 0) {
4714 * If there is a timeout scheduled to release this
4715 * sim queue, remove it. The queue frozen count is
4718 if ((sim->flags & CAM_SIM_REL_TIMEOUT_PENDING) != 0){
4719 callout_stop(&sim->callout);
4720 sim->flags &= ~CAM_SIM_REL_TIMEOUT_PENDING;
4722 bus = xpt_find_bus(sim->path_id);
4726 * Now that we are unfrozen run the send queue.
4728 xpt_run_dev_sendq(bus);
4730 xpt_release_bus(bus);
4736 * XXX Appears to be unused.
4739 xpt_release_simq_timeout(void *arg)
4741 struct cam_sim *sim;
4743 sim = (struct cam_sim *)arg;
4744 xpt_release_simq(sim, /* run_queue */ TRUE);
4748 xpt_done(union ccb *done_ccb)
4750 struct cam_sim *sim;
4752 CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("xpt_done\n"));
4753 if ((done_ccb->ccb_h.func_code & XPT_FC_QUEUED) != 0) {
4755 * Queue up the request for handling by our SWI handler
4756 * any of the "non-immediate" type of ccbs.
4758 sim = done_ccb->ccb_h.path->bus->sim;
4759 switch (done_ccb->ccb_h.path->periph->type) {
4760 case CAM_PERIPH_BIO:
4761 TAILQ_INSERT_TAIL(&sim->sim_doneq, &done_ccb->ccb_h,
4763 done_ccb->ccb_h.pinfo.index = CAM_DONEQ_INDEX;
4764 if ((sim->flags & CAM_SIM_ON_DONEQ) == 0) {
4765 mtx_lock(&cam_simq_lock);
4766 TAILQ_INSERT_TAIL(&cam_simq, sim,
4768 sim->flags |= CAM_SIM_ON_DONEQ;
4769 mtx_unlock(&cam_simq_lock);
4771 if ((done_ccb->ccb_h.path->periph->flags &
4772 CAM_PERIPH_POLLED) == 0)
4773 swi_sched(cambio_ih, 0);
4776 panic("unknown periph type %d",
4777 done_ccb->ccb_h.path->periph->type);
4787 new_ccb = malloc(sizeof(*new_ccb), M_CAMXPT, M_ZERO|M_WAITOK);
4792 xpt_alloc_ccb_nowait()
4796 new_ccb = malloc(sizeof(*new_ccb), M_CAMXPT, M_ZERO|M_NOWAIT);
4801 xpt_free_ccb(union ccb *free_ccb)
4803 free(free_ccb, M_CAMXPT);
4808 /* Private XPT functions */
4811 * Get a CAM control block for the caller. Charge the structure to the device
4812 * referenced by the path. If the this device has no 'credits' then the
4813 * device already has the maximum number of outstanding operations under way
4814 * and we return NULL. If we don't have sufficient resources to allocate more
4815 * ccbs, we also return NULL.
4818 xpt_get_ccb(struct cam_ed *device)
4821 struct cam_sim *sim;
4824 if ((new_ccb = (union ccb *)SLIST_FIRST(&sim->ccb_freeq)) == NULL) {
4825 new_ccb = xpt_alloc_ccb_nowait();
4826 if (new_ccb == NULL) {
4829 if ((sim->flags & CAM_SIM_MPSAFE) == 0)
4830 callout_handle_init(&new_ccb->ccb_h.timeout_ch);
4831 SLIST_INSERT_HEAD(&sim->ccb_freeq, &new_ccb->ccb_h,
4835 cam_ccbq_take_opening(&device->ccbq);
4836 SLIST_REMOVE_HEAD(&sim->ccb_freeq, xpt_links.sle);
4841 xpt_release_bus(struct cam_eb *bus)
4844 if ((--bus->refcount == 0)
4845 && (TAILQ_FIRST(&bus->et_entries) == NULL)) {
4846 mtx_lock(&xsoftc.xpt_topo_lock);
4847 TAILQ_REMOVE(&xsoftc.xpt_busses, bus, links);
4848 xsoftc.bus_generation++;
4849 mtx_unlock(&xsoftc.xpt_topo_lock);
4850 cam_sim_release(bus->sim);
4851 free(bus, M_CAMXPT);
4855 static struct cam_et *
4856 xpt_alloc_target(struct cam_eb *bus, target_id_t target_id)
4858 struct cam_et *target;
4860 target = (struct cam_et *)malloc(sizeof(*target), M_CAMXPT, M_NOWAIT);
4861 if (target != NULL) {
4862 struct cam_et *cur_target;
4864 TAILQ_INIT(&target->ed_entries);
4866 target->target_id = target_id;
4867 target->refcount = 1;
4868 target->generation = 0;
4869 timevalclear(&target->last_reset);
4871 * Hold a reference to our parent bus so it
4872 * will not go away before we do.
4876 /* Insertion sort into our bus's target list */
4877 cur_target = TAILQ_FIRST(&bus->et_entries);
4878 while (cur_target != NULL && cur_target->target_id < target_id)
4879 cur_target = TAILQ_NEXT(cur_target, links);
4881 if (cur_target != NULL) {
4882 TAILQ_INSERT_BEFORE(cur_target, target, links);
4884 TAILQ_INSERT_TAIL(&bus->et_entries, target, links);
4892 xpt_release_target(struct cam_eb *bus, struct cam_et *target)
4895 if ((--target->refcount == 0)
4896 && (TAILQ_FIRST(&target->ed_entries) == NULL)) {
4897 TAILQ_REMOVE(&bus->et_entries, target, links);
4899 free(target, M_CAMXPT);
4900 xpt_release_bus(bus);
4904 static struct cam_ed *
4905 xpt_alloc_device(struct cam_eb *bus, struct cam_et *target, lun_id_t lun_id)
4907 struct cam_path path;
4908 struct cam_ed *device;
4909 struct cam_devq *devq;
4912 /* Make space for us in the device queue on our bus */
4913 devq = bus->sim->devq;
4914 status = cam_devq_resize(devq, devq->alloc_queue.array_size + 1);
4916 if (status != CAM_REQ_CMP) {
4919 device = (struct cam_ed *)malloc(sizeof(*device),
4920 M_CAMXPT, M_NOWAIT);
4923 if (device != NULL) {
4924 struct cam_ed *cur_device;
4926 cam_init_pinfo(&device->alloc_ccb_entry.pinfo);
4927 device->alloc_ccb_entry.device = device;
4928 cam_init_pinfo(&device->send_ccb_entry.pinfo);
4929 device->send_ccb_entry.device = device;
4930 device->target = target;
4931 device->lun_id = lun_id;
4932 device->sim = bus->sim;
4933 /* Initialize our queues */
4934 if (camq_init(&device->drvq, 0) != 0) {
4935 free(device, M_CAMXPT);
4938 if (cam_ccbq_init(&device->ccbq,
4939 bus->sim->max_dev_openings) != 0) {
4940 camq_fini(&device->drvq);
4941 free(device, M_CAMXPT);
4944 SLIST_INIT(&device->asyncs);
4945 SLIST_INIT(&device->periphs);
4946 device->generation = 0;
4947 device->owner = NULL;
4949 * Take the default quirk entry until we have inquiry
4950 * data and can determine a better quirk to use.
4952 device->quirk = &xpt_quirk_table[xpt_quirk_table_size - 1];
4953 bzero(&device->inq_data, sizeof(device->inq_data));
4954 device->inq_flags = 0;
4955 device->queue_flags = 0;
4956 device->serial_num = NULL;
4957 device->serial_num_len = 0;
4958 device->qfrozen_cnt = 0;
4959 device->flags = CAM_DEV_UNCONFIGURED;
4960 device->tag_delay_count = 0;
4961 device->tag_saved_openings = 0;
4962 device->refcount = 1;
4963 if (bus->sim->flags & CAM_SIM_MPSAFE)
4964 callout_init_mtx(&device->callout, bus->sim->mtx, 0);
4966 callout_init_mtx(&device->callout, &Giant, 0);
4969 * Hold a reference to our parent target so it
4970 * will not go away before we do.
4975 * XXX should be limited by number of CCBs this bus can
4978 bus->sim->max_ccbs += device->ccbq.devq_openings;
4979 /* Insertion sort into our target's device list */
4980 cur_device = TAILQ_FIRST(&target->ed_entries);
4981 while (cur_device != NULL && cur_device->lun_id < lun_id)
4982 cur_device = TAILQ_NEXT(cur_device, links);
4983 if (cur_device != NULL) {
4984 TAILQ_INSERT_BEFORE(cur_device, device, links);
4986 TAILQ_INSERT_TAIL(&target->ed_entries, device, links);
4988 target->generation++;
4989 if (lun_id != CAM_LUN_WILDCARD) {
4990 xpt_compile_path(&path,
4995 xpt_devise_transport(&path);
4996 xpt_release_path(&path);
5003 xpt_release_device(struct cam_eb *bus, struct cam_et *target,
5004 struct cam_ed *device)
5007 if ((--device->refcount == 0)
5008 && ((device->flags & CAM_DEV_UNCONFIGURED) != 0)) {
5009 struct cam_devq *devq;
5011 if (device->alloc_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX
5012 || device->send_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX)
5013 panic("Removing device while still queued for ccbs");
5015 if ((device->flags & CAM_DEV_REL_TIMEOUT_PENDING) != 0)
5016 callout_stop(&device->callout);
5018 TAILQ_REMOVE(&target->ed_entries, device,links);
5019 target->generation++;
5020 bus->sim->max_ccbs -= device->ccbq.devq_openings;
5021 /* Release our slot in the devq */
5022 devq = bus->sim->devq;
5023 cam_devq_resize(devq, devq->alloc_queue.array_size - 1);
5024 camq_fini(&device->drvq);
5025 camq_fini(&device->ccbq.queue);
5026 free(device, M_CAMXPT);
5027 xpt_release_target(bus, target);
5032 xpt_dev_ccbq_resize(struct cam_path *path, int newopenings)
5040 diff = newopenings - (dev->ccbq.dev_active + dev->ccbq.dev_openings);
5041 result = cam_ccbq_resize(&dev->ccbq, newopenings);
5042 if (result == CAM_REQ_CMP && (diff < 0)) {
5043 dev->flags |= CAM_DEV_RESIZE_QUEUE_NEEDED;
5045 if ((dev->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
5046 || (dev->inq_flags & SID_CmdQue) != 0)
5047 dev->tag_saved_openings = newopenings;
5048 /* Adjust the global limit */
5049 dev->sim->max_ccbs += diff;
5053 static struct cam_eb *
5054 xpt_find_bus(path_id_t path_id)
5058 mtx_lock(&xsoftc.xpt_topo_lock);
5059 for (bus = TAILQ_FIRST(&xsoftc.xpt_busses);
5061 bus = TAILQ_NEXT(bus, links)) {
5062 if (bus->path_id == path_id) {
5067 mtx_unlock(&xsoftc.xpt_topo_lock);
5071 static struct cam_et *
5072 xpt_find_target(struct cam_eb *bus, target_id_t target_id)
5074 struct cam_et *target;
5076 for (target = TAILQ_FIRST(&bus->et_entries);
5078 target = TAILQ_NEXT(target, links)) {
5079 if (target->target_id == target_id) {
5087 static struct cam_ed *
5088 xpt_find_device(struct cam_et *target, lun_id_t lun_id)
5090 struct cam_ed *device;
5092 for (device = TAILQ_FIRST(&target->ed_entries);
5094 device = TAILQ_NEXT(device, links)) {
5095 if (device->lun_id == lun_id) {
5104 union ccb *request_ccb;
5105 struct ccb_pathinq *cpi;
5107 } xpt_scan_bus_info;
5110 * To start a scan, request_ccb is an XPT_SCAN_BUS ccb.
5111 * As the scan progresses, xpt_scan_bus is used as the
5112 * callback on completion function.
5115 xpt_scan_bus(struct cam_periph *periph, union ccb *request_ccb)
5117 CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE,
5118 ("xpt_scan_bus\n"));
5119 switch (request_ccb->ccb_h.func_code) {
5122 xpt_scan_bus_info *scan_info;
5123 union ccb *work_ccb;
5124 struct cam_path *path;
5129 /* Find out the characteristics of the bus */
5130 work_ccb = xpt_alloc_ccb_nowait();
5131 if (work_ccb == NULL) {
5132 request_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
5133 xpt_done(request_ccb);
5136 xpt_setup_ccb(&work_ccb->ccb_h, request_ccb->ccb_h.path,
5137 request_ccb->ccb_h.pinfo.priority);
5138 work_ccb->ccb_h.func_code = XPT_PATH_INQ;
5139 xpt_action(work_ccb);
5140 if (work_ccb->ccb_h.status != CAM_REQ_CMP) {
5141 request_ccb->ccb_h.status = work_ccb->ccb_h.status;
5142 xpt_free_ccb(work_ccb);
5143 xpt_done(request_ccb);
5147 if ((work_ccb->cpi.hba_misc & PIM_NOINITIATOR) != 0) {
5149 * Can't scan the bus on an adapter that
5150 * cannot perform the initiator role.
5152 request_ccb->ccb_h.status = CAM_REQ_CMP;
5153 xpt_free_ccb(work_ccb);
5154 xpt_done(request_ccb);
5158 /* Save some state for use while we probe for devices */
5159 scan_info = (xpt_scan_bus_info *)
5160 malloc(sizeof(xpt_scan_bus_info), M_CAMXPT, M_NOWAIT);
5161 scan_info->request_ccb = request_ccb;
5162 scan_info->cpi = &work_ccb->cpi;
5164 /* Cache on our stack so we can work asynchronously */
5165 max_target = scan_info->cpi->max_target;
5166 initiator_id = scan_info->cpi->initiator_id;
5170 * We can scan all targets in parallel, or do it sequentially.
5172 if (scan_info->cpi->hba_misc & PIM_SEQSCAN) {
5174 scan_info->counter = 0;
5176 scan_info->counter = scan_info->cpi->max_target + 1;
5177 if (scan_info->cpi->initiator_id < scan_info->counter) {
5178 scan_info->counter--;
5182 for (i = 0; i <= max_target; i++) {
5184 if (i == initiator_id)
5187 status = xpt_create_path(&path, xpt_periph,
5188 request_ccb->ccb_h.path_id,
5190 if (status != CAM_REQ_CMP) {
5191 printf("xpt_scan_bus: xpt_create_path failed"
5192 " with status %#x, bus scan halted\n",
5194 free(scan_info, M_CAMXPT);
5195 request_ccb->ccb_h.status = status;
5196 xpt_free_ccb(work_ccb);
5197 xpt_done(request_ccb);
5200 work_ccb = xpt_alloc_ccb_nowait();
5201 if (work_ccb == NULL) {
5202 free(scan_info, M_CAMXPT);
5203 xpt_free_path(path);
5204 request_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
5205 xpt_done(request_ccb);
5208 xpt_setup_ccb(&work_ccb->ccb_h, path,
5209 request_ccb->ccb_h.pinfo.priority);
5210 work_ccb->ccb_h.func_code = XPT_SCAN_LUN;
5211 work_ccb->ccb_h.cbfcnp = xpt_scan_bus;
5212 work_ccb->ccb_h.ppriv_ptr0 = scan_info;
5213 work_ccb->crcn.flags = request_ccb->crcn.flags;
5214 xpt_action(work_ccb);
5221 struct cam_path *path;
5222 xpt_scan_bus_info *scan_info;
5224 target_id_t target_id;
5227 /* Reuse the same CCB to query if a device was really found */
5228 scan_info = (xpt_scan_bus_info *)request_ccb->ccb_h.ppriv_ptr0;
5229 xpt_setup_ccb(&request_ccb->ccb_h, request_ccb->ccb_h.path,
5230 request_ccb->ccb_h.pinfo.priority);
5231 request_ccb->ccb_h.func_code = XPT_GDEV_TYPE;
5233 path_id = request_ccb->ccb_h.path_id;
5234 target_id = request_ccb->ccb_h.target_id;
5235 lun_id = request_ccb->ccb_h.target_lun;
5236 xpt_action(request_ccb);
5238 if (request_ccb->ccb_h.status != CAM_REQ_CMP) {
5239 struct cam_ed *device;
5240 struct cam_et *target;
5244 * If we already probed lun 0 successfully, or
5245 * we have additional configured luns on this
5246 * target that might have "gone away", go onto
5249 target = request_ccb->ccb_h.path->target;
5251 * We may touch devices that we don't
5252 * hold references too, so ensure they
5253 * don't disappear out from under us.
5254 * The target above is referenced by the
5255 * path in the request ccb.
5258 device = TAILQ_FIRST(&target->ed_entries);
5259 if (device != NULL) {
5260 phl = CAN_SRCH_HI_SPARSE(device);
5261 if (device->lun_id == 0)
5262 device = TAILQ_NEXT(device, links);
5264 if ((lun_id != 0) || (device != NULL)) {
5265 if (lun_id < (CAM_SCSI2_MAXLUN-1) || phl)
5269 struct cam_ed *device;
5271 device = request_ccb->ccb_h.path->device;
5273 if ((device->quirk->quirks & CAM_QUIRK_NOLUNS) == 0) {
5274 /* Try the next lun */
5275 if (lun_id < (CAM_SCSI2_MAXLUN-1)
5276 || CAN_SRCH_HI_DENSE(device))
5282 * Free the current request path- we're done with it.
5284 xpt_free_path(request_ccb->ccb_h.path);
5287 * Check to see if we scan any further luns.
5289 if (lun_id == request_ccb->ccb_h.target_lun
5290 || lun_id > scan_info->cpi->max_lun) {
5295 if (scan_info->cpi->hba_misc & PIM_SEQSCAN) {
5296 scan_info->counter++;
5297 if (scan_info->counter ==
5298 scan_info->cpi->initiator_id) {
5299 scan_info->counter++;
5301 if (scan_info->counter >=
5302 scan_info->cpi->max_target+1) {
5306 scan_info->counter--;
5307 if (scan_info->counter == 0) {
5312 xpt_free_ccb(request_ccb);
5313 xpt_free_ccb((union ccb *)scan_info->cpi);
5314 request_ccb = scan_info->request_ccb;
5315 free(scan_info, M_CAMXPT);
5316 request_ccb->ccb_h.status = CAM_REQ_CMP;
5317 xpt_done(request_ccb);
5321 if ((scan_info->cpi->hba_misc & PIM_SEQSCAN) == 0) {
5324 status = xpt_create_path(&path, xpt_periph,
5325 scan_info->request_ccb->ccb_h.path_id,
5326 scan_info->counter, 0);
5327 if (status != CAM_REQ_CMP) {
5328 printf("xpt_scan_bus: xpt_create_path failed"
5329 " with status %#x, bus scan halted\n",
5331 xpt_free_ccb(request_ccb);
5332 xpt_free_ccb((union ccb *)scan_info->cpi);
5333 request_ccb = scan_info->request_ccb;
5334 free(scan_info, M_CAMXPT);
5335 request_ccb->ccb_h.status = status;
5336 xpt_done(request_ccb);
5339 xpt_setup_ccb(&request_ccb->ccb_h, path,
5340 request_ccb->ccb_h.pinfo.priority);
5341 request_ccb->ccb_h.func_code = XPT_SCAN_LUN;
5342 request_ccb->ccb_h.cbfcnp = xpt_scan_bus;
5343 request_ccb->ccb_h.ppriv_ptr0 = scan_info;
5344 request_ccb->crcn.flags =
5345 scan_info->request_ccb->crcn.flags;
5347 status = xpt_create_path(&path, xpt_periph,
5348 path_id, target_id, lun_id);
5349 if (status != CAM_REQ_CMP) {
5350 printf("xpt_scan_bus: xpt_create_path failed "
5351 "with status %#x, halting LUN scan\n",
5355 xpt_setup_ccb(&request_ccb->ccb_h, path,
5356 request_ccb->ccb_h.pinfo.priority);
5357 request_ccb->ccb_h.func_code = XPT_SCAN_LUN;
5358 request_ccb->ccb_h.cbfcnp = xpt_scan_bus;
5359 request_ccb->ccb_h.ppriv_ptr0 = scan_info;
5360 request_ccb->crcn.flags =
5361 scan_info->request_ccb->crcn.flags;
5363 xpt_action(request_ccb);
5373 PROBE_INQUIRY, /* this counts as DV0 for Basic Domain Validation */
5378 PROBE_TUR_FOR_NEGOTIATION,
5379 PROBE_INQUIRY_BASIC_DV1,
5380 PROBE_INQUIRY_BASIC_DV2,
5385 PROBE_INQUIRY_CKSUM = 0x01,
5386 PROBE_SERIAL_CKSUM = 0x02,
5387 PROBE_NO_ANNOUNCE = 0x04
5391 TAILQ_HEAD(, ccb_hdr) request_ccbs;
5392 probe_action action;
5393 union ccb saved_ccb;
5396 u_int8_t digest[16];
5400 xpt_scan_lun(struct cam_periph *periph, struct cam_path *path,
5401 cam_flags flags, union ccb *request_ccb)
5403 struct ccb_pathinq cpi;
5405 struct cam_path *new_path;
5406 struct cam_periph *old_periph;
5408 CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE,
5409 ("xpt_scan_lun\n"));
5411 xpt_setup_ccb(&cpi.ccb_h, path, /*priority*/1);
5412 cpi.ccb_h.func_code = XPT_PATH_INQ;
5413 xpt_action((union ccb *)&cpi);
5415 if (cpi.ccb_h.status != CAM_REQ_CMP) {
5416 if (request_ccb != NULL) {
5417 request_ccb->ccb_h.status = cpi.ccb_h.status;
5418 xpt_done(request_ccb);
5423 if ((cpi.hba_misc & PIM_NOINITIATOR) != 0) {
5425 * Can't scan the bus on an adapter that
5426 * cannot perform the initiator role.
5428 if (request_ccb != NULL) {
5429 request_ccb->ccb_h.status = CAM_REQ_CMP;
5430 xpt_done(request_ccb);
5435 if (request_ccb == NULL) {
5436 request_ccb = malloc(sizeof(union ccb), M_CAMXPT, M_NOWAIT);
5437 if (request_ccb == NULL) {
5438 xpt_print(path, "xpt_scan_lun: can't allocate CCB, "
5439 "can't continue\n");
5442 new_path = malloc(sizeof(*new_path), M_CAMXPT, M_NOWAIT);
5443 if (new_path == NULL) {
5444 xpt_print(path, "xpt_scan_lun: can't allocate path, "
5445 "can't continue\n");
5446 free(request_ccb, M_CAMXPT);
5449 status = xpt_compile_path(new_path, xpt_periph,
5451 path->target->target_id,
5452 path->device->lun_id);
5454 if (status != CAM_REQ_CMP) {
5455 xpt_print(path, "xpt_scan_lun: can't compile path, "
5456 "can't continue\n");
5457 free(request_ccb, M_CAMXPT);
5458 free(new_path, M_CAMXPT);
5461 xpt_setup_ccb(&request_ccb->ccb_h, new_path, /*priority*/ 1);
5462 request_ccb->ccb_h.cbfcnp = xptscandone;
5463 request_ccb->ccb_h.func_code = XPT_SCAN_LUN;
5464 request_ccb->crcn.flags = flags;
5467 if ((old_periph = cam_periph_find(path, "probe")) != NULL) {
5470 softc = (probe_softc *)old_periph->softc;
5471 TAILQ_INSERT_TAIL(&softc->request_ccbs, &request_ccb->ccb_h,
5474 status = cam_periph_alloc(proberegister, NULL, probecleanup,
5475 probestart, "probe",
5477 request_ccb->ccb_h.path, NULL, 0,
5480 if (status != CAM_REQ_CMP) {
5481 xpt_print(path, "xpt_scan_lun: cam_alloc_periph "
5482 "returned an error, can't continue probe\n");
5483 request_ccb->ccb_h.status = status;
5484 xpt_done(request_ccb);
5490 xptscandone(struct cam_periph *periph, union ccb *done_ccb)
5492 xpt_release_path(done_ccb->ccb_h.path);
5493 free(done_ccb->ccb_h.path, M_CAMXPT);
5494 free(done_ccb, M_CAMXPT);
5498 proberegister(struct cam_periph *periph, void *arg)
5500 union ccb *request_ccb; /* CCB representing the probe request */
5504 request_ccb = (union ccb *)arg;
5505 if (periph == NULL) {
5506 printf("proberegister: periph was NULL!!\n");
5507 return(CAM_REQ_CMP_ERR);
5510 if (request_ccb == NULL) {
5511 printf("proberegister: no probe CCB, "
5512 "can't register device\n");
5513 return(CAM_REQ_CMP_ERR);
5516 softc = (probe_softc *)malloc(sizeof(*softc), M_CAMXPT, M_NOWAIT);
5518 if (softc == NULL) {
5519 printf("proberegister: Unable to probe new device. "
5520 "Unable to allocate softc\n");
5521 return(CAM_REQ_CMP_ERR);
5523 TAILQ_INIT(&softc->request_ccbs);
5524 TAILQ_INSERT_TAIL(&softc->request_ccbs, &request_ccb->ccb_h,
5527 periph->softc = softc;
5528 status = cam_periph_acquire(periph);
5529 if (status != CAM_REQ_CMP) {
5535 * Ensure we've waited at least a bus settle
5536 * delay before attempting to probe the device.
5537 * For HBAs that don't do bus resets, this won't make a difference.
5539 cam_periph_freeze_after_event(periph, &periph->path->bus->last_reset,
5541 probeschedule(periph);
5542 return(CAM_REQ_CMP);
5546 probeschedule(struct cam_periph *periph)
5548 struct ccb_pathinq cpi;
5552 softc = (probe_softc *)periph->softc;
5553 ccb = (union ccb *)TAILQ_FIRST(&softc->request_ccbs);
5555 xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1);
5556 cpi.ccb_h.func_code = XPT_PATH_INQ;
5557 xpt_action((union ccb *)&cpi);
5560 * If a device has gone away and another device, or the same one,
5561 * is back in the same place, it should have a unit attention
5562 * condition pending. It will not report the unit attention in
5563 * response to an inquiry, which may leave invalid transfer
5564 * negotiations in effect. The TUR will reveal the unit attention
5565 * condition. Only send the TUR for lun 0, since some devices
5566 * will get confused by commands other than inquiry to non-existent
5567 * luns. If you think a device has gone away start your scan from
5568 * lun 0. This will insure that any bogus transfer settings are
5571 * If we haven't seen the device before and the controller supports
5572 * some kind of transfer negotiation, negotiate with the first
5573 * sent command if no bus reset was performed at startup. This
5574 * ensures that the device is not confused by transfer negotiation
5575 * settings left over by loader or BIOS action.
5577 if (((ccb->ccb_h.path->device->flags & CAM_DEV_UNCONFIGURED) == 0)
5578 && (ccb->ccb_h.target_lun == 0)) {
5579 softc->action = PROBE_TUR;
5580 } else if ((cpi.hba_inquiry & (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE)) != 0
5581 && (cpi.hba_misc & PIM_NOBUSRESET) != 0) {
5582 proberequestdefaultnegotiation(periph);
5583 softc->action = PROBE_INQUIRY;
5585 softc->action = PROBE_INQUIRY;
5588 if (ccb->crcn.flags & CAM_EXPECT_INQ_CHANGE)
5589 softc->flags |= PROBE_NO_ANNOUNCE;
5591 softc->flags &= ~PROBE_NO_ANNOUNCE;
5593 xpt_schedule(periph, ccb->ccb_h.pinfo.priority);
5597 probestart(struct cam_periph *periph, union ccb *start_ccb)
5599 /* Probe the device that our peripheral driver points to */
5600 struct ccb_scsiio *csio;
5603 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("probestart\n"));
5605 softc = (probe_softc *)periph->softc;
5606 csio = &start_ccb->csio;
5608 switch (softc->action) {
5610 case PROBE_TUR_FOR_NEGOTIATION:
5613 scsi_test_unit_ready(csio,
5622 case PROBE_FULL_INQUIRY:
5623 case PROBE_INQUIRY_BASIC_DV1:
5624 case PROBE_INQUIRY_BASIC_DV2:
5627 struct scsi_inquiry_data *inq_buf;
5629 inq_buf = &periph->path->device->inq_data;
5632 * If the device is currently configured, we calculate an
5633 * MD5 checksum of the inquiry data, and if the serial number
5634 * length is greater than 0, add the serial number data
5635 * into the checksum as well. Once the inquiry and the
5636 * serial number check finish, we attempt to figure out
5637 * whether we still have the same device.
5639 if ((periph->path->device->flags & CAM_DEV_UNCONFIGURED) == 0) {
5641 MD5Init(&softc->context);
5642 MD5Update(&softc->context, (unsigned char *)inq_buf,
5643 sizeof(struct scsi_inquiry_data));
5644 softc->flags |= PROBE_INQUIRY_CKSUM;
5645 if (periph->path->device->serial_num_len > 0) {
5646 MD5Update(&softc->context,
5647 periph->path->device->serial_num,
5648 periph->path->device->serial_num_len);
5649 softc->flags |= PROBE_SERIAL_CKSUM;
5651 MD5Final(softc->digest, &softc->context);
5654 if (softc->action == PROBE_INQUIRY)
5655 inquiry_len = SHORT_INQUIRY_LENGTH;
5657 inquiry_len = SID_ADDITIONAL_LENGTH(inq_buf);
5660 * Some parallel SCSI devices fail to send an
5661 * ignore wide residue message when dealing with
5662 * odd length inquiry requests. Round up to be
5665 inquiry_len = roundup2(inquiry_len, 2);
5667 if (softc->action == PROBE_INQUIRY_BASIC_DV1
5668 || softc->action == PROBE_INQUIRY_BASIC_DV2) {
5669 inq_buf = malloc(inquiry_len, M_CAMXPT, M_NOWAIT);
5671 if (inq_buf == NULL) {
5672 xpt_print(periph->path, "malloc failure- skipping Basic"
5673 "Domain Validation\n");
5674 softc->action = PROBE_DV_EXIT;
5675 scsi_test_unit_ready(csio,
5687 (u_int8_t *)inq_buf,
5692 /*timeout*/60 * 1000);
5695 case PROBE_MODE_SENSE:
5700 mode_buf_len = sizeof(struct scsi_mode_header_6)
5701 + sizeof(struct scsi_mode_blk_desc)
5702 + sizeof(struct scsi_control_page);
5703 mode_buf = malloc(mode_buf_len, M_CAMXPT, M_NOWAIT);
5704 if (mode_buf != NULL) {
5705 scsi_mode_sense(csio,
5710 SMS_PAGE_CTRL_CURRENT,
5711 SMS_CONTROL_MODE_PAGE,
5718 xpt_print(periph->path, "Unable to mode sense control page - "
5719 "malloc failure\n");
5720 softc->action = PROBE_SERIAL_NUM_0;
5723 case PROBE_SERIAL_NUM_0:
5725 struct scsi_vpd_supported_page_list *vpd_list = NULL;
5726 struct cam_ed *device;
5728 device = periph->path->device;
5729 if ((device->quirk->quirks & CAM_QUIRK_NOSERIAL) == 0) {
5730 vpd_list = malloc(sizeof(*vpd_list), M_CAMXPT,
5734 if (vpd_list != NULL) {
5739 (u_int8_t *)vpd_list,
5742 SVPD_SUPPORTED_PAGE_LIST,
5744 /*timeout*/60 * 1000);
5748 * We'll have to do without, let our probedone
5749 * routine finish up for us.
5751 start_ccb->csio.data_ptr = NULL;
5752 probedone(periph, start_ccb);
5755 case PROBE_SERIAL_NUM_1:
5757 struct scsi_vpd_unit_serial_number *serial_buf;
5758 struct cam_ed* device;
5761 device = periph->path->device;
5762 device->serial_num = NULL;
5763 device->serial_num_len = 0;
5765 serial_buf = (struct scsi_vpd_unit_serial_number *)
5766 malloc(sizeof(*serial_buf), M_CAMXPT, M_NOWAIT|M_ZERO);
5768 if (serial_buf != NULL) {
5773 (u_int8_t *)serial_buf,
5774 sizeof(*serial_buf),
5776 SVPD_UNIT_SERIAL_NUMBER,
5778 /*timeout*/60 * 1000);
5782 * We'll have to do without, let our probedone
5783 * routine finish up for us.
5785 start_ccb->csio.data_ptr = NULL;
5786 probedone(periph, start_ccb);
5790 xpt_action(start_ccb);
5794 proberequestdefaultnegotiation(struct cam_periph *periph)
5796 struct ccb_trans_settings cts;
5798 xpt_setup_ccb(&cts.ccb_h, periph->path, /*priority*/1);
5799 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
5800 cts.type = CTS_TYPE_USER_SETTINGS;
5801 xpt_action((union ccb *)&cts);
5802 if ((cts.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
5805 cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
5806 cts.type = CTS_TYPE_CURRENT_SETTINGS;
5807 xpt_action((union ccb *)&cts);
5811 * Backoff Negotiation Code- only pertinent for SPI devices.
5814 proberequestbackoff(struct cam_periph *periph, struct cam_ed *device)
5816 struct ccb_trans_settings cts;
5817 struct ccb_trans_settings_spi *spi;
5819 memset(&cts, 0, sizeof (cts));
5820 xpt_setup_ccb(&cts.ccb_h, periph->path, /*priority*/1);
5821 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
5822 cts.type = CTS_TYPE_CURRENT_SETTINGS;
5823 xpt_action((union ccb *)&cts);
5824 if ((cts.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
5826 xpt_print(periph->path,
5827 "failed to get current device settings\n");
5831 if (cts.transport != XPORT_SPI) {
5833 xpt_print(periph->path, "not SPI transport\n");
5837 spi = &cts.xport_specific.spi;
5840 * We cannot renegotiate sync rate if we don't have one.
5842 if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0) {
5844 xpt_print(periph->path, "no sync rate known\n");
5850 * We'll assert that we don't have to touch PPR options- the
5851 * SIM will see what we do with period and offset and adjust
5852 * the PPR options as appropriate.
5856 * A sync rate with unknown or zero offset is nonsensical.
5857 * A sync period of zero means Async.
5859 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0
5860 || spi->sync_offset == 0 || spi->sync_period == 0) {
5862 xpt_print(periph->path, "no sync rate available\n");
5867 if (device->flags & CAM_DEV_DV_HIT_BOTTOM) {
5868 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
5869 ("hit async: giving up on DV\n"));
5875 * Jump sync_period up by one, but stop at 5MHz and fall back to Async.
5876 * We don't try to remember 'last' settings to see if the SIM actually
5877 * gets into the speed we want to set. We check on the SIM telling
5878 * us that a requested speed is bad, but otherwise don't try and
5879 * check the speed due to the asynchronous and handshake nature
5882 spi->valid = CTS_SPI_VALID_SYNC_RATE | CTS_SPI_VALID_SYNC_OFFSET;
5885 if (spi->sync_period >= 0xf) {
5886 spi->sync_period = 0;
5887 spi->sync_offset = 0;
5888 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
5889 ("setting to async for DV\n"));
5891 * Once we hit async, we don't want to try
5892 * any more settings.
5894 device->flags |= CAM_DEV_DV_HIT_BOTTOM;
5895 } else if (bootverbose) {
5896 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
5897 ("DV: period 0x%x\n", spi->sync_period));
5898 printf("setting period to 0x%x\n", spi->sync_period);
5900 cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
5901 cts.type = CTS_TYPE_CURRENT_SETTINGS;
5902 xpt_action((union ccb *)&cts);
5903 if ((cts.ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
5906 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
5907 ("DV: failed to set period 0x%x\n", spi->sync_period));
5908 if (spi->sync_period == 0) {
5916 probedone(struct cam_periph *periph, union ccb *done_ccb)
5919 struct cam_path *path;
5922 CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("probedone\n"));
5924 softc = (probe_softc *)periph->softc;
5925 path = done_ccb->ccb_h.path;
5926 priority = done_ccb->ccb_h.pinfo.priority;
5928 switch (softc->action) {
5931 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
5933 if (cam_periph_error(done_ccb, 0,
5934 SF_NO_PRINT, NULL) == ERESTART)
5936 else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
5937 /* Don't wedge the queue */
5938 xpt_release_devq(done_ccb->ccb_h.path,
5942 softc->action = PROBE_INQUIRY;
5943 xpt_release_ccb(done_ccb);
5944 xpt_schedule(periph, priority);
5948 case PROBE_FULL_INQUIRY:
5950 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
5951 struct scsi_inquiry_data *inq_buf;
5952 u_int8_t periph_qual;
5954 path->device->flags |= CAM_DEV_INQUIRY_DATA_VALID;
5955 inq_buf = &path->device->inq_data;
5957 periph_qual = SID_QUAL(inq_buf);
5959 switch(periph_qual) {
5960 case SID_QUAL_LU_CONNECTED:
5965 * We conservatively request only
5966 * SHORT_INQUIRY_LEN bytes of inquiry
5967 * information during our first try
5968 * at sending an INQUIRY. If the device
5969 * has more information to give,
5970 * perform a second request specifying
5971 * the amount of information the device
5972 * is willing to give.
5974 len = inq_buf->additional_length
5975 + offsetof(struct scsi_inquiry_data,
5976 additional_length) + 1;
5977 if (softc->action == PROBE_INQUIRY
5978 && len > SHORT_INQUIRY_LENGTH) {
5979 softc->action = PROBE_FULL_INQUIRY;
5980 xpt_release_ccb(done_ccb);
5981 xpt_schedule(periph, priority);
5985 xpt_find_quirk(path->device);
5987 xpt_devise_transport(path);
5988 if (INQ_DATA_TQ_ENABLED(inq_buf))
5989 softc->action = PROBE_MODE_SENSE;
5991 softc->action = PROBE_SERIAL_NUM_0;
5993 path->device->flags &= ~CAM_DEV_UNCONFIGURED;
5995 xpt_release_ccb(done_ccb);
5996 xpt_schedule(periph, priority);
6002 } else if (cam_periph_error(done_ccb, 0,
6003 done_ccb->ccb_h.target_lun > 0
6004 ? SF_RETRY_UA|SF_QUIET_IR
6006 &softc->saved_ccb) == ERESTART) {
6008 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
6009 /* Don't wedge the queue */
6010 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
6014 * If we get to this point, we got an error status back
6015 * from the inquiry and the error status doesn't require
6016 * automatically retrying the command. Therefore, the
6017 * inquiry failed. If we had inquiry information before
6018 * for this device, but this latest inquiry command failed,
6019 * the device has probably gone away. If this device isn't
6020 * already marked unconfigured, notify the peripheral
6021 * drivers that this device is no more.
6023 if ((path->device->flags & CAM_DEV_UNCONFIGURED) == 0)
6024 /* Send the async notification. */
6025 xpt_async(AC_LOST_DEVICE, path, NULL);
6027 xpt_release_ccb(done_ccb);
6030 case PROBE_MODE_SENSE:
6032 struct ccb_scsiio *csio;
6033 struct scsi_mode_header_6 *mode_hdr;
6035 csio = &done_ccb->csio;
6036 mode_hdr = (struct scsi_mode_header_6 *)csio->data_ptr;
6037 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
6038 struct scsi_control_page *page;
6041 offset = ((u_int8_t *)&mode_hdr[1])
6042 + mode_hdr->blk_desc_len;
6043 page = (struct scsi_control_page *)offset;
6044 path->device->queue_flags = page->queue_flags;
6045 } else if (cam_periph_error(done_ccb, 0,
6046 SF_RETRY_UA|SF_NO_PRINT,
6047 &softc->saved_ccb) == ERESTART) {
6049 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
6050 /* Don't wedge the queue */
6051 xpt_release_devq(done_ccb->ccb_h.path,
6052 /*count*/1, /*run_queue*/TRUE);
6054 xpt_release_ccb(done_ccb);
6055 free(mode_hdr, M_CAMXPT);
6056 softc->action = PROBE_SERIAL_NUM_0;
6057 xpt_schedule(periph, priority);
6060 case PROBE_SERIAL_NUM_0:
6062 struct ccb_scsiio *csio;
6063 struct scsi_vpd_supported_page_list *page_list;
6064 int length, serialnum_supported, i;
6066 serialnum_supported = 0;
6067 csio = &done_ccb->csio;
6069 (struct scsi_vpd_supported_page_list *)csio->data_ptr;
6071 if (page_list == NULL) {
6073 * Don't process the command as it was never sent
6075 } else if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP
6076 && (page_list->length > 0)) {
6077 length = min(page_list->length,
6078 SVPD_SUPPORTED_PAGES_SIZE);
6079 for (i = 0; i < length; i++) {
6080 if (page_list->list[i] ==
6081 SVPD_UNIT_SERIAL_NUMBER) {
6082 serialnum_supported = 1;
6086 } else if (cam_periph_error(done_ccb, 0,
6087 SF_RETRY_UA|SF_NO_PRINT,
6088 &softc->saved_ccb) == ERESTART) {
6090 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
6091 /* Don't wedge the queue */
6092 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
6096 if (page_list != NULL)
6097 free(page_list, M_DEVBUF);
6099 if (serialnum_supported) {
6100 xpt_release_ccb(done_ccb);
6101 softc->action = PROBE_SERIAL_NUM_1;
6102 xpt_schedule(periph, priority);
6105 xpt_release_ccb(done_ccb);
6106 softc->action = PROBE_TUR_FOR_NEGOTIATION;
6107 xpt_schedule(periph, done_ccb->ccb_h.pinfo.priority);
6111 case PROBE_SERIAL_NUM_1:
6113 struct ccb_scsiio *csio;
6114 struct scsi_vpd_unit_serial_number *serial_buf;
6121 csio = &done_ccb->csio;
6122 priority = done_ccb->ccb_h.pinfo.priority;
6124 (struct scsi_vpd_unit_serial_number *)csio->data_ptr;
6126 /* Clean up from previous instance of this device */
6127 if (path->device->serial_num != NULL) {
6128 free(path->device->serial_num, M_CAMXPT);
6129 path->device->serial_num = NULL;
6130 path->device->serial_num_len = 0;
6133 if (serial_buf == NULL) {
6135 * Don't process the command as it was never sent
6137 } else if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP
6138 && (serial_buf->length > 0)) {
6141 path->device->serial_num =
6142 (u_int8_t *)malloc((serial_buf->length + 1),
6143 M_CAMXPT, M_NOWAIT);
6144 if (path->device->serial_num != NULL) {
6145 bcopy(serial_buf->serial_num,
6146 path->device->serial_num,
6147 serial_buf->length);
6148 path->device->serial_num_len =
6150 path->device->serial_num[serial_buf->length]
6153 } else if (cam_periph_error(done_ccb, 0,
6154 SF_RETRY_UA|SF_NO_PRINT,
6155 &softc->saved_ccb) == ERESTART) {
6157 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
6158 /* Don't wedge the queue */
6159 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
6164 * Let's see if we have seen this device before.
6166 if ((softc->flags & PROBE_INQUIRY_CKSUM) != 0) {
6168 u_int8_t digest[16];
6173 (unsigned char *)&path->device->inq_data,
6174 sizeof(struct scsi_inquiry_data));
6177 MD5Update(&context, serial_buf->serial_num,
6178 serial_buf->length);
6180 MD5Final(digest, &context);
6181 if (bcmp(softc->digest, digest, 16) == 0)
6185 * XXX Do we need to do a TUR in order to ensure
6186 * that the device really hasn't changed???
6189 && ((softc->flags & PROBE_NO_ANNOUNCE) == 0))
6190 xpt_async(AC_LOST_DEVICE, path, NULL);
6192 if (serial_buf != NULL)
6193 free(serial_buf, M_CAMXPT);
6197 * Now that we have all the necessary
6198 * information to safely perform transfer
6199 * negotiations... Controllers don't perform
6200 * any negotiation or tagged queuing until
6201 * after the first XPT_SET_TRAN_SETTINGS ccb is
6202 * received. So, on a new device, just retrieve
6203 * the user settings, and set them as the current
6204 * settings to set the device up.
6206 proberequestdefaultnegotiation(periph);
6207 xpt_release_ccb(done_ccb);
6210 * Perform a TUR to allow the controller to
6211 * perform any necessary transfer negotiation.
6213 softc->action = PROBE_TUR_FOR_NEGOTIATION;
6214 xpt_schedule(periph, priority);
6217 xpt_release_ccb(done_ccb);
6220 case PROBE_TUR_FOR_NEGOTIATION:
6222 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
6223 /* Don't wedge the queue */
6224 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
6228 * Do Domain Validation for lun 0 on devices that claim
6229 * to support Synchronous Transfer modes.
6231 if (softc->action == PROBE_TUR_FOR_NEGOTIATION
6232 && done_ccb->ccb_h.target_lun == 0
6233 && (path->device->inq_data.flags & SID_Sync) != 0
6234 && (path->device->flags & CAM_DEV_IN_DV) == 0) {
6235 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
6236 ("Begin Domain Validation\n"));
6237 path->device->flags |= CAM_DEV_IN_DV;
6238 xpt_release_ccb(done_ccb);
6239 softc->action = PROBE_INQUIRY_BASIC_DV1;
6240 xpt_schedule(periph, priority);
6243 if (softc->action == PROBE_DV_EXIT) {
6244 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
6245 ("Leave Domain Validation\n"));
6247 path->device->flags &=
6248 ~(CAM_DEV_UNCONFIGURED|CAM_DEV_IN_DV|CAM_DEV_DV_HIT_BOTTOM);
6249 if ((softc->flags & PROBE_NO_ANNOUNCE) == 0) {
6250 /* Inform the XPT that a new device has been found */
6251 done_ccb->ccb_h.func_code = XPT_GDEV_TYPE;
6252 xpt_action(done_ccb);
6253 xpt_async(AC_FOUND_DEVICE, done_ccb->ccb_h.path,
6256 xpt_release_ccb(done_ccb);
6258 case PROBE_INQUIRY_BASIC_DV1:
6259 case PROBE_INQUIRY_BASIC_DV2:
6261 struct scsi_inquiry_data *nbuf;
6262 struct ccb_scsiio *csio;
6264 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
6265 /* Don't wedge the queue */
6266 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
6269 csio = &done_ccb->csio;
6270 nbuf = (struct scsi_inquiry_data *)csio->data_ptr;
6271 if (bcmp(nbuf, &path->device->inq_data, SHORT_INQUIRY_LENGTH)) {
6273 "inquiry data fails comparison at DV%d step\n",
6274 softc->action == PROBE_INQUIRY_BASIC_DV1 ? 1 : 2);
6275 if (proberequestbackoff(periph, path->device)) {
6276 path->device->flags &= ~CAM_DEV_IN_DV;
6277 softc->action = PROBE_TUR_FOR_NEGOTIATION;
6280 softc->action = PROBE_DV_EXIT;
6282 free(nbuf, M_CAMXPT);
6283 xpt_release_ccb(done_ccb);
6284 xpt_schedule(periph, priority);
6287 free(nbuf, M_CAMXPT);
6288 if (softc->action == PROBE_INQUIRY_BASIC_DV1) {
6289 softc->action = PROBE_INQUIRY_BASIC_DV2;
6290 xpt_release_ccb(done_ccb);
6291 xpt_schedule(periph, priority);
6294 if (softc->action == PROBE_DV_EXIT) {
6295 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
6296 ("Leave Domain Validation Successfully\n"));
6298 path->device->flags &=
6299 ~(CAM_DEV_UNCONFIGURED|CAM_DEV_IN_DV|CAM_DEV_DV_HIT_BOTTOM);
6300 if ((softc->flags & PROBE_NO_ANNOUNCE) == 0) {
6301 /* Inform the XPT that a new device has been found */
6302 done_ccb->ccb_h.func_code = XPT_GDEV_TYPE;
6303 xpt_action(done_ccb);
6304 xpt_async(AC_FOUND_DEVICE, done_ccb->ccb_h.path,
6307 xpt_release_ccb(done_ccb);
6311 done_ccb = (union ccb *)TAILQ_FIRST(&softc->request_ccbs);
6312 TAILQ_REMOVE(&softc->request_ccbs, &done_ccb->ccb_h, periph_links.tqe);
6313 done_ccb->ccb_h.status = CAM_REQ_CMP;
6315 if (TAILQ_FIRST(&softc->request_ccbs) == NULL) {
6316 cam_periph_invalidate(periph);
6317 cam_periph_release_locked(periph);
6319 probeschedule(periph);
6324 probecleanup(struct cam_periph *periph)
6326 free(periph->softc, M_CAMXPT);
6330 xpt_find_quirk(struct cam_ed *device)
6334 match = cam_quirkmatch((caddr_t)&device->inq_data,
6335 (caddr_t)xpt_quirk_table,
6336 sizeof(xpt_quirk_table)/sizeof(*xpt_quirk_table),
6337 sizeof(*xpt_quirk_table), scsi_inquiry_match);
6340 panic("xpt_find_quirk: device didn't match wildcard entry!!");
6342 device->quirk = (struct xpt_quirk_entry *)match;
6346 sysctl_cam_search_luns(SYSCTL_HANDLER_ARGS)
6351 error = sysctl_handle_int(oidp, &bool, 0, req);
6352 if (error != 0 || req->newptr == NULL)
6354 if (bool == 0 || bool == 1) {
6364 xpt_devise_transport(struct cam_path *path)
6366 struct ccb_pathinq cpi;
6367 struct ccb_trans_settings cts;
6368 struct scsi_inquiry_data *inq_buf;
6370 /* Get transport information from the SIM */
6371 xpt_setup_ccb(&cpi.ccb_h, path, /*priority*/1);
6372 cpi.ccb_h.func_code = XPT_PATH_INQ;
6373 xpt_action((union ccb *)&cpi);
6376 if ((path->device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0)
6377 inq_buf = &path->device->inq_data;
6378 path->device->protocol = PROTO_SCSI;
6379 path->device->protocol_version =
6380 inq_buf != NULL ? SID_ANSI_REV(inq_buf) : cpi.protocol_version;
6381 path->device->transport = cpi.transport;
6382 path->device->transport_version = cpi.transport_version;
6385 * Any device not using SPI3 features should
6386 * be considered SPI2 or lower.
6388 if (inq_buf != NULL) {
6389 if (path->device->transport == XPORT_SPI
6390 && (inq_buf->spi3data & SID_SPI_MASK) == 0
6391 && path->device->transport_version > 2)
6392 path->device->transport_version = 2;
6394 struct cam_ed* otherdev;
6396 for (otherdev = TAILQ_FIRST(&path->target->ed_entries);
6398 otherdev = TAILQ_NEXT(otherdev, links)) {
6399 if (otherdev != path->device)
6403 if (otherdev != NULL) {
6405 * Initially assume the same versioning as
6406 * prior luns for this target.
6408 path->device->protocol_version =
6409 otherdev->protocol_version;
6410 path->device->transport_version =
6411 otherdev->transport_version;
6413 /* Until we know better, opt for safty */
6414 path->device->protocol_version = 2;
6415 if (path->device->transport == XPORT_SPI)
6416 path->device->transport_version = 2;
6418 path->device->transport_version = 0;
6424 * For a device compliant with SPC-2 we should be able
6425 * to determine the transport version supported by
6426 * scrutinizing the version descriptors in the
6430 /* Tell the controller what we think */
6431 xpt_setup_ccb(&cts.ccb_h, path, /*priority*/1);
6432 cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
6433 cts.type = CTS_TYPE_CURRENT_SETTINGS;
6434 cts.transport = path->device->transport;
6435 cts.transport_version = path->device->transport_version;
6436 cts.protocol = path->device->protocol;
6437 cts.protocol_version = path->device->protocol_version;
6438 cts.proto_specific.valid = 0;
6439 cts.xport_specific.valid = 0;
6440 xpt_action((union ccb *)&cts);
6444 xpt_set_transfer_settings(struct ccb_trans_settings *cts, struct cam_ed *device,
6447 struct ccb_pathinq cpi;
6448 struct ccb_trans_settings cur_cts;
6449 struct ccb_trans_settings_scsi *scsi;
6450 struct ccb_trans_settings_scsi *cur_scsi;
6451 struct cam_sim *sim;
6452 struct scsi_inquiry_data *inq_data;
6454 if (device == NULL) {
6455 cts->ccb_h.status = CAM_PATH_INVALID;
6456 xpt_done((union ccb *)cts);
6460 if (cts->protocol == PROTO_UNKNOWN
6461 || cts->protocol == PROTO_UNSPECIFIED) {
6462 cts->protocol = device->protocol;
6463 cts->protocol_version = device->protocol_version;
6466 if (cts->protocol_version == PROTO_VERSION_UNKNOWN
6467 || cts->protocol_version == PROTO_VERSION_UNSPECIFIED)
6468 cts->protocol_version = device->protocol_version;
6470 if (cts->protocol != device->protocol) {
6471 xpt_print(cts->ccb_h.path, "Uninitialized Protocol %x:%x?\n",
6472 cts->protocol, device->protocol);
6473 cts->protocol = device->protocol;
6476 if (cts->protocol_version > device->protocol_version) {
6478 xpt_print(cts->ccb_h.path, "Down reving Protocol "
6479 "Version from %d to %d?\n", cts->protocol_version,
6480 device->protocol_version);
6482 cts->protocol_version = device->protocol_version;
6485 if (cts->transport == XPORT_UNKNOWN
6486 || cts->transport == XPORT_UNSPECIFIED) {
6487 cts->transport = device->transport;
6488 cts->transport_version = device->transport_version;
6491 if (cts->transport_version == XPORT_VERSION_UNKNOWN
6492 || cts->transport_version == XPORT_VERSION_UNSPECIFIED)
6493 cts->transport_version = device->transport_version;
6495 if (cts->transport != device->transport) {
6496 xpt_print(cts->ccb_h.path, "Uninitialized Transport %x:%x?\n",
6497 cts->transport, device->transport);
6498 cts->transport = device->transport;
6501 if (cts->transport_version > device->transport_version) {
6503 xpt_print(cts->ccb_h.path, "Down reving Transport "
6504 "Version from %d to %d?\n", cts->transport_version,
6505 device->transport_version);
6507 cts->transport_version = device->transport_version;
6510 sim = cts->ccb_h.path->bus->sim;
6513 * Nothing more of interest to do unless
6514 * this is a device connected via the
6517 if (cts->protocol != PROTO_SCSI) {
6518 if (async_update == FALSE)
6519 (*(sim->sim_action))(sim, (union ccb *)cts);
6523 inq_data = &device->inq_data;
6524 scsi = &cts->proto_specific.scsi;
6525 xpt_setup_ccb(&cpi.ccb_h, cts->ccb_h.path, /*priority*/1);
6526 cpi.ccb_h.func_code = XPT_PATH_INQ;
6527 xpt_action((union ccb *)&cpi);
6529 /* SCSI specific sanity checking */
6530 if ((cpi.hba_inquiry & PI_TAG_ABLE) == 0
6531 || (INQ_DATA_TQ_ENABLED(inq_data)) == 0
6532 || (device->queue_flags & SCP_QUEUE_DQUE) != 0
6533 || (device->quirk->mintags == 0)) {
6535 * Can't tag on hardware that doesn't support tags,
6536 * doesn't have it enabled, or has broken tag support.
6538 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
6541 if (async_update == FALSE) {
6543 * Perform sanity checking against what the
6544 * controller and device can do.
6546 xpt_setup_ccb(&cur_cts.ccb_h, cts->ccb_h.path, /*priority*/1);
6547 cur_cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
6548 cur_cts.type = cts->type;
6549 xpt_action((union ccb *)&cur_cts);
6550 if ((cur_cts.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
6553 cur_scsi = &cur_cts.proto_specific.scsi;
6554 if ((scsi->valid & CTS_SCSI_VALID_TQ) == 0) {
6555 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
6556 scsi->flags |= cur_scsi->flags & CTS_SCSI_FLAGS_TAG_ENB;
6558 if ((cur_scsi->valid & CTS_SCSI_VALID_TQ) == 0)
6559 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
6562 /* SPI specific sanity checking */
6563 if (cts->transport == XPORT_SPI && async_update == FALSE) {
6565 struct ccb_trans_settings_spi *spi;
6566 struct ccb_trans_settings_spi *cur_spi;
6568 spi = &cts->xport_specific.spi;
6570 cur_spi = &cur_cts.xport_specific.spi;
6572 /* Fill in any gaps in what the user gave us */
6573 if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0)
6574 spi->sync_period = cur_spi->sync_period;
6575 if ((cur_spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0)
6576 spi->sync_period = 0;
6577 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0)
6578 spi->sync_offset = cur_spi->sync_offset;
6579 if ((cur_spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0)
6580 spi->sync_offset = 0;
6581 if ((spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0)
6582 spi->ppr_options = cur_spi->ppr_options;
6583 if ((cur_spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0)
6584 spi->ppr_options = 0;
6585 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) == 0)
6586 spi->bus_width = cur_spi->bus_width;
6587 if ((cur_spi->valid & CTS_SPI_VALID_BUS_WIDTH) == 0)
6589 if ((spi->valid & CTS_SPI_VALID_DISC) == 0) {
6590 spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
6591 spi->flags |= cur_spi->flags & CTS_SPI_FLAGS_DISC_ENB;
6593 if ((cur_spi->valid & CTS_SPI_VALID_DISC) == 0)
6594 spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
6595 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0
6596 && (inq_data->flags & SID_Sync) == 0
6597 && cts->type == CTS_TYPE_CURRENT_SETTINGS)
6598 || ((cpi.hba_inquiry & PI_SDTR_ABLE) == 0)
6599 || (spi->sync_offset == 0)
6600 || (spi->sync_period == 0)) {
6602 spi->sync_period = 0;
6603 spi->sync_offset = 0;
6606 switch (spi->bus_width) {
6607 case MSG_EXT_WDTR_BUS_32_BIT:
6608 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0
6609 || (inq_data->flags & SID_WBus32) != 0
6610 || cts->type == CTS_TYPE_USER_SETTINGS)
6611 && (cpi.hba_inquiry & PI_WIDE_32) != 0)
6613 /* Fall Through to 16-bit */
6614 case MSG_EXT_WDTR_BUS_16_BIT:
6615 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0
6616 || (inq_data->flags & SID_WBus16) != 0
6617 || cts->type == CTS_TYPE_USER_SETTINGS)
6618 && (cpi.hba_inquiry & PI_WIDE_16) != 0) {
6619 spi->bus_width = MSG_EXT_WDTR_BUS_16_BIT;
6622 /* Fall Through to 8-bit */
6623 default: /* New bus width?? */
6624 case MSG_EXT_WDTR_BUS_8_BIT:
6625 /* All targets can do this */
6626 spi->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
6630 spi3caps = cpi.xport_specific.spi.ppr_options;
6631 if ((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0
6632 && cts->type == CTS_TYPE_CURRENT_SETTINGS)
6633 spi3caps &= inq_data->spi3data;
6635 if ((spi3caps & SID_SPI_CLOCK_DT) == 0)
6636 spi->ppr_options &= ~MSG_EXT_PPR_DT_REQ;
6638 if ((spi3caps & SID_SPI_IUS) == 0)
6639 spi->ppr_options &= ~MSG_EXT_PPR_IU_REQ;
6641 if ((spi3caps & SID_SPI_QAS) == 0)
6642 spi->ppr_options &= ~MSG_EXT_PPR_QAS_REQ;
6644 /* No SPI Transfer settings are allowed unless we are wide */
6645 if (spi->bus_width == 0)
6646 spi->ppr_options = 0;
6648 if ((spi->flags & CTS_SPI_FLAGS_DISC_ENB) == 0) {
6650 * Can't tag queue without disconnection.
6652 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
6653 scsi->valid |= CTS_SCSI_VALID_TQ;
6657 * If we are currently performing tagged transactions to
6658 * this device and want to change its negotiation parameters,
6659 * go non-tagged for a bit to give the controller a chance to
6660 * negotiate unhampered by tag messages.
6662 if (cts->type == CTS_TYPE_CURRENT_SETTINGS
6663 && (device->inq_flags & SID_CmdQue) != 0
6664 && (scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0
6665 && (spi->flags & (CTS_SPI_VALID_SYNC_RATE|
6666 CTS_SPI_VALID_SYNC_OFFSET|
6667 CTS_SPI_VALID_BUS_WIDTH)) != 0)
6668 xpt_toggle_tags(cts->ccb_h.path);
6671 if (cts->type == CTS_TYPE_CURRENT_SETTINGS
6672 && (scsi->valid & CTS_SCSI_VALID_TQ) != 0) {
6676 * If we are transitioning from tags to no-tags or
6677 * vice-versa, we need to carefully freeze and restart
6678 * the queue so that we don't overlap tagged and non-tagged
6679 * commands. We also temporarily stop tags if there is
6680 * a change in transfer negotiation settings to allow
6681 * "tag-less" negotiation.
6683 if ((device->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
6684 || (device->inq_flags & SID_CmdQue) != 0)
6685 device_tagenb = TRUE;
6687 device_tagenb = FALSE;
6689 if (((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0
6690 && device_tagenb == FALSE)
6691 || ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) == 0
6692 && device_tagenb == TRUE)) {
6694 if ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0) {
6696 * Delay change to use tags until after a
6697 * few commands have gone to this device so
6698 * the controller has time to perform transfer
6699 * negotiations without tagged messages getting
6702 device->tag_delay_count = CAM_TAG_DELAY_COUNT;
6703 device->flags |= CAM_DEV_TAG_AFTER_COUNT;
6705 struct ccb_relsim crs;
6707 xpt_freeze_devq(cts->ccb_h.path, /*count*/1);
6708 device->inq_flags &= ~SID_CmdQue;
6709 xpt_dev_ccbq_resize(cts->ccb_h.path,
6710 sim->max_dev_openings);
6711 device->flags &= ~CAM_DEV_TAG_AFTER_COUNT;
6712 device->tag_delay_count = 0;
6714 xpt_setup_ccb(&crs.ccb_h, cts->ccb_h.path,
6716 crs.ccb_h.func_code = XPT_REL_SIMQ;
6717 crs.release_flags = RELSIM_RELEASE_AFTER_QEMPTY;
6719 = crs.release_timeout
6722 xpt_action((union ccb *)&crs);
6726 if (async_update == FALSE)
6727 (*(sim->sim_action))(sim, (union ccb *)cts);
6732 xpt_toggle_tags(struct cam_path *path)
6737 * Give controllers a chance to renegotiate
6738 * before starting tag operations. We
6739 * "toggle" tagged queuing off then on
6740 * which causes the tag enable command delay
6741 * counter to come into effect.
6744 if ((dev->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
6745 || ((dev->inq_flags & SID_CmdQue) != 0
6746 && (dev->inq_flags & (SID_Sync|SID_WBus16|SID_WBus32)) != 0)) {
6747 struct ccb_trans_settings cts;
6749 xpt_setup_ccb(&cts.ccb_h, path, 1);
6750 cts.protocol = PROTO_SCSI;
6751 cts.protocol_version = PROTO_VERSION_UNSPECIFIED;
6752 cts.transport = XPORT_UNSPECIFIED;
6753 cts.transport_version = XPORT_VERSION_UNSPECIFIED;
6754 cts.proto_specific.scsi.flags = 0;
6755 cts.proto_specific.scsi.valid = CTS_SCSI_VALID_TQ;
6756 xpt_set_transfer_settings(&cts, path->device,
6757 /*async_update*/TRUE);
6758 cts.proto_specific.scsi.flags = CTS_SCSI_FLAGS_TAG_ENB;
6759 xpt_set_transfer_settings(&cts, path->device,
6760 /*async_update*/TRUE);
6765 xpt_start_tags(struct cam_path *path)
6767 struct ccb_relsim crs;
6768 struct cam_ed *device;
6769 struct cam_sim *sim;
6772 device = path->device;
6773 sim = path->bus->sim;
6774 device->flags &= ~CAM_DEV_TAG_AFTER_COUNT;
6775 xpt_freeze_devq(path, /*count*/1);
6776 device->inq_flags |= SID_CmdQue;
6777 if (device->tag_saved_openings != 0)
6778 newopenings = device->tag_saved_openings;
6780 newopenings = min(device->quirk->maxtags,
6781 sim->max_tagged_dev_openings);
6782 xpt_dev_ccbq_resize(path, newopenings);
6783 xpt_setup_ccb(&crs.ccb_h, path, /*priority*/1);
6784 crs.ccb_h.func_code = XPT_REL_SIMQ;
6785 crs.release_flags = RELSIM_RELEASE_AFTER_QEMPTY;
6787 = crs.release_timeout
6790 xpt_action((union ccb *)&crs);
6793 static int busses_to_config;
6794 static int busses_to_reset;
6797 xptconfigbuscountfunc(struct cam_eb *bus, void *arg)
6800 mtx_assert(bus->sim->mtx, MA_OWNED);
6802 if (bus->path_id != CAM_XPT_PATH_ID) {
6803 struct cam_path path;
6804 struct ccb_pathinq cpi;
6808 xpt_compile_path(&path, NULL, bus->path_id,
6809 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
6810 xpt_setup_ccb(&cpi.ccb_h, &path, /*priority*/1);
6811 cpi.ccb_h.func_code = XPT_PATH_INQ;
6812 xpt_action((union ccb *)&cpi);
6813 can_negotiate = cpi.hba_inquiry;
6814 can_negotiate &= (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE);
6815 if ((cpi.hba_misc & PIM_NOBUSRESET) == 0
6818 xpt_release_path(&path);
6825 xptconfigfunc(struct cam_eb *bus, void *arg)
6827 struct cam_path *path;
6828 union ccb *work_ccb;
6830 mtx_assert(bus->sim->mtx, MA_OWNED);
6832 if (bus->path_id != CAM_XPT_PATH_ID) {
6836 work_ccb = xpt_alloc_ccb_nowait();
6837 if (work_ccb == NULL) {
6839 xpt_finishconfig(xpt_periph, NULL);
6842 if ((status = xpt_create_path(&path, xpt_periph, bus->path_id,
6843 CAM_TARGET_WILDCARD,
6844 CAM_LUN_WILDCARD)) !=CAM_REQ_CMP){
6845 printf("xptconfigfunc: xpt_create_path failed with "
6846 "status %#x for bus %d\n", status, bus->path_id);
6847 printf("xptconfigfunc: halting bus configuration\n");
6848 xpt_free_ccb(work_ccb);
6850 xpt_finishconfig(xpt_periph, NULL);
6853 xpt_setup_ccb(&work_ccb->ccb_h, path, /*priority*/1);
6854 work_ccb->ccb_h.func_code = XPT_PATH_INQ;
6855 xpt_action(work_ccb);
6856 if (work_ccb->ccb_h.status != CAM_REQ_CMP) {
6857 printf("xptconfigfunc: CPI failed on bus %d "
6858 "with status %d\n", bus->path_id,
6859 work_ccb->ccb_h.status);
6860 xpt_finishconfig(xpt_periph, work_ccb);
6864 can_negotiate = work_ccb->cpi.hba_inquiry;
6865 can_negotiate &= (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE);
6866 if ((work_ccb->cpi.hba_misc & PIM_NOBUSRESET) == 0
6867 && (can_negotiate != 0)) {
6868 xpt_setup_ccb(&work_ccb->ccb_h, path, /*priority*/1);
6869 work_ccb->ccb_h.func_code = XPT_RESET_BUS;
6870 work_ccb->ccb_h.cbfcnp = NULL;
6871 CAM_DEBUG(path, CAM_DEBUG_SUBTRACE,
6872 ("Resetting Bus\n"));
6873 xpt_action(work_ccb);
6874 xpt_finishconfig(xpt_periph, work_ccb);
6876 /* Act as though we performed a successful BUS RESET */
6877 work_ccb->ccb_h.func_code = XPT_RESET_BUS;
6878 xpt_finishconfig(xpt_periph, work_ccb);
6886 xpt_config(void *arg)
6889 * Now that interrupts are enabled, go find our devices
6893 /* Setup debugging flags and path */
6894 #ifdef CAM_DEBUG_FLAGS
6895 cam_dflags = CAM_DEBUG_FLAGS;
6896 #else /* !CAM_DEBUG_FLAGS */
6897 cam_dflags = CAM_DEBUG_NONE;
6898 #endif /* CAM_DEBUG_FLAGS */
6899 #ifdef CAM_DEBUG_BUS
6900 if (cam_dflags != CAM_DEBUG_NONE) {
6902 * Locking is specifically omitted here. No SIMs have
6903 * registered yet, so xpt_create_path will only be searching
6904 * empty lists of targets and devices.
6906 if (xpt_create_path(&cam_dpath, xpt_periph,
6907 CAM_DEBUG_BUS, CAM_DEBUG_TARGET,
6908 CAM_DEBUG_LUN) != CAM_REQ_CMP) {
6909 printf("xpt_config: xpt_create_path() failed for debug"
6910 " target %d:%d:%d, debugging disabled\n",
6911 CAM_DEBUG_BUS, CAM_DEBUG_TARGET, CAM_DEBUG_LUN);
6912 cam_dflags = CAM_DEBUG_NONE;
6916 #else /* !CAM_DEBUG_BUS */
6918 #endif /* CAM_DEBUG_BUS */
6919 #endif /* CAMDEBUG */
6922 * Scan all installed busses.
6924 xpt_for_all_busses(xptconfigbuscountfunc, NULL);
6926 if (busses_to_config == 0) {
6927 /* Call manually because we don't have any busses */
6928 xpt_finishconfig(xpt_periph, NULL);
6930 if (busses_to_reset > 0 && scsi_delay >= 2000) {
6931 printf("Waiting %d seconds for SCSI "
6932 "devices to settle\n", scsi_delay/1000);
6934 xpt_for_all_busses(xptconfigfunc, NULL);
6939 * If the given device only has one peripheral attached to it, and if that
6940 * peripheral is the passthrough driver, announce it. This insures that the
6941 * user sees some sort of announcement for every peripheral in their system.
6944 xptpassannouncefunc(struct cam_ed *device, void *arg)
6946 struct cam_periph *periph;
6949 for (periph = SLIST_FIRST(&device->periphs), i = 0; periph != NULL;
6950 periph = SLIST_NEXT(periph, periph_links), i++);
6952 periph = SLIST_FIRST(&device->periphs);
6954 && (strncmp(periph->periph_name, "pass", 4) == 0))
6955 xpt_announce_periph(periph, NULL);
6961 xpt_finishconfig_task(void *context, int pending)
6963 struct periph_driver **p_drv;
6966 if (busses_to_config == 0) {
6967 /* Register all the peripheral drivers */
6968 /* XXX This will have to change when we have loadable modules */
6969 p_drv = periph_drivers;
6970 for (i = 0; p_drv[i] != NULL; i++) {
6971 (*p_drv[i]->init)();
6975 * Check for devices with no "standard" peripheral driver
6976 * attached. For any devices like that, announce the
6977 * passthrough driver so the user will see something.
6979 xpt_for_all_devices(xptpassannouncefunc, NULL);
6981 /* Release our hook so that the boot can continue. */
6982 config_intrhook_disestablish(xsoftc.xpt_config_hook);
6983 free(xsoftc.xpt_config_hook, M_CAMXPT);
6984 xsoftc.xpt_config_hook = NULL;
6987 free(context, M_CAMXPT);
6991 xpt_finishconfig(struct cam_periph *periph, union ccb *done_ccb)
6993 struct xpt_task *task;
6995 if (done_ccb != NULL) {
6996 CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE,
6997 ("xpt_finishconfig\n"));
6998 switch(done_ccb->ccb_h.func_code) {
7000 if (done_ccb->ccb_h.status == CAM_REQ_CMP) {
7001 done_ccb->ccb_h.func_code = XPT_SCAN_BUS;
7002 done_ccb->ccb_h.cbfcnp = xpt_finishconfig;
7003 done_ccb->crcn.flags = 0;
7004 xpt_action(done_ccb);
7010 xpt_free_path(done_ccb->ccb_h.path);
7016 if (busses_to_config == 0) {
7017 task = malloc(sizeof(struct xpt_task), M_CAMXPT, M_NOWAIT);
7019 TASK_INIT(&task->task, 0, xpt_finishconfig_task, task);
7020 taskqueue_enqueue(taskqueue_thread, &task->task);
7024 if (done_ccb != NULL)
7025 xpt_free_ccb(done_ccb);
7029 xpt_register_async(int event, ac_callback_t *cbfunc, void *cbarg,
7030 struct cam_path *path)
7032 struct ccb_setasync csa;
7037 mtx_lock(&xsoftc.xpt_lock);
7038 status = xpt_create_path(&path, /*periph*/NULL, CAM_XPT_PATH_ID,
7039 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
7040 if (status != CAM_REQ_CMP) {
7041 mtx_unlock(&xsoftc.xpt_lock);
7047 xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
7048 csa.ccb_h.func_code = XPT_SASYNC_CB;
7049 csa.event_enable = event;
7050 csa.callback = cbfunc;
7051 csa.callback_arg = cbarg;
7052 xpt_action((union ccb *)&csa);
7053 status = csa.ccb_h.status;
7055 xpt_free_path(path);
7056 mtx_unlock(&xsoftc.xpt_lock);
7062 xptaction(struct cam_sim *sim, union ccb *work_ccb)
7064 CAM_DEBUG(work_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("xptaction\n"));
7066 switch (work_ccb->ccb_h.func_code) {
7067 /* Common cases first */
7068 case XPT_PATH_INQ: /* Path routing inquiry */
7070 struct ccb_pathinq *cpi;
7072 cpi = &work_ccb->cpi;
7073 cpi->version_num = 1; /* XXX??? */
7074 cpi->hba_inquiry = 0;
7075 cpi->target_sprt = 0;
7077 cpi->hba_eng_cnt = 0;
7078 cpi->max_target = 0;
7080 cpi->initiator_id = 0;
7081 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
7082 strncpy(cpi->hba_vid, "", HBA_IDLEN);
7083 strncpy(cpi->dev_name, sim->sim_name, DEV_IDLEN);
7084 cpi->unit_number = sim->unit_number;
7085 cpi->bus_id = sim->bus_id;
7086 cpi->base_transfer_speed = 0;
7087 cpi->protocol = PROTO_UNSPECIFIED;
7088 cpi->protocol_version = PROTO_VERSION_UNSPECIFIED;
7089 cpi->transport = XPORT_UNSPECIFIED;
7090 cpi->transport_version = XPORT_VERSION_UNSPECIFIED;
7091 cpi->ccb_h.status = CAM_REQ_CMP;
7096 work_ccb->ccb_h.status = CAM_REQ_INVALID;
7103 * The xpt as a "controller" has no interrupt sources, so polling
7107 xptpoll(struct cam_sim *sim)
7112 xpt_lock_buses(void)
7114 mtx_lock(&xsoftc.xpt_topo_lock);
7118 xpt_unlock_buses(void)
7120 mtx_unlock(&xsoftc.xpt_topo_lock);
7127 struct cam_sim *sim;
7129 mtx_lock(&cam_simq_lock);
7131 TAILQ_CONCAT(&queue, &cam_simq, links);
7132 mtx_unlock(&cam_simq_lock);
7134 while ((sim = TAILQ_FIRST(&queue)) != NULL) {
7135 TAILQ_REMOVE(&queue, sim, links);
7137 sim->flags &= ~CAM_SIM_ON_DONEQ;
7138 camisr_runqueue(&sim->sim_doneq);
7139 CAM_SIM_UNLOCK(sim);
7144 camisr_runqueue(void *V_queue)
7146 cam_isrq_t *queue = V_queue;
7147 struct ccb_hdr *ccb_h;
7149 while ((ccb_h = TAILQ_FIRST(queue)) != NULL) {
7152 TAILQ_REMOVE(queue, ccb_h, sim_links.tqe);
7153 ccb_h->pinfo.index = CAM_UNQUEUED_INDEX;
7155 CAM_DEBUG(ccb_h->path, CAM_DEBUG_TRACE,
7160 if (ccb_h->flags & CAM_HIGH_POWER) {
7161 struct highpowerlist *hphead;
7162 union ccb *send_ccb;
7164 mtx_lock(&xsoftc.xpt_lock);
7165 hphead = &xsoftc.highpowerq;
7167 send_ccb = (union ccb *)STAILQ_FIRST(hphead);
7170 * Increment the count since this command is done.
7172 xsoftc.num_highpower++;
7175 * Any high powered commands queued up?
7177 if (send_ccb != NULL) {
7179 STAILQ_REMOVE_HEAD(hphead, xpt_links.stqe);
7180 mtx_unlock(&xsoftc.xpt_lock);
7182 xpt_release_devq(send_ccb->ccb_h.path,
7183 /*count*/1, /*runqueue*/TRUE);
7185 mtx_unlock(&xsoftc.xpt_lock);
7188 if ((ccb_h->func_code & XPT_FC_USER_CCB) == 0) {
7191 dev = ccb_h->path->device;
7193 cam_ccbq_ccb_done(&dev->ccbq, (union ccb *)ccb_h);
7194 ccb_h->path->bus->sim->devq->send_active--;
7195 ccb_h->path->bus->sim->devq->send_openings++;
7197 if (((dev->flags & CAM_DEV_REL_ON_COMPLETE) != 0
7198 && (ccb_h->status&CAM_STATUS_MASK) != CAM_REQUEUE_REQ)
7199 || ((dev->flags & CAM_DEV_REL_ON_QUEUE_EMPTY) != 0
7200 && (dev->ccbq.dev_active == 0))) {
7202 xpt_release_devq(ccb_h->path, /*count*/1,
7206 if ((dev->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
7207 && (--dev->tag_delay_count == 0))
7208 xpt_start_tags(ccb_h->path);
7210 if ((dev->ccbq.queue.entries > 0)
7211 && (dev->qfrozen_cnt == 0)
7212 && (device_is_send_queued(dev) == 0)) {
7213 runq = xpt_schedule_dev_sendq(ccb_h->path->bus,
7218 if (ccb_h->status & CAM_RELEASE_SIMQ) {
7219 xpt_release_simq(ccb_h->path->bus->sim,
7221 ccb_h->status &= ~CAM_RELEASE_SIMQ;
7225 if ((ccb_h->flags & CAM_DEV_QFRZDIS)
7226 && (ccb_h->status & CAM_DEV_QFRZN)) {
7227 xpt_release_devq(ccb_h->path, /*count*/1,
7229 ccb_h->status &= ~CAM_DEV_QFRZN;
7231 xpt_run_dev_sendq(ccb_h->path->bus);
7234 /* Call the peripheral driver's callback */
7235 (*ccb_h->cbfcnp)(ccb_h->path->periph, (union ccb *)ccb_h);