2 * Implementation of the Common Access Method Transport (XPT) layer.
4 * Copyright (c) 1997, 1998, 1999 Justin T. Gibbs.
5 * Copyright (c) 1997, 1998, 1999 Kenneth D. Merry.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions, and the following disclaimer,
13 * without modification, immediately at the beginning of the file.
14 * 2. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
21 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * $FreeBSD: src/sys/cam/cam_xpt.c,v 1.80.2.18 2002/12/09 17:31:55 gibbs Exp $
31 #include <sys/param.h>
32 #include <sys/systm.h>
33 #include <sys/types.h>
34 #include <sys/malloc.h>
35 #include <sys/kernel.h>
38 #include <sys/fcntl.h>
40 #include <sys/devicestat.h>
41 #include <sys/interrupt.h>
45 #include <pc98/pc98/pc98_machdep.h> /* geometry translation */
48 #include <machine/clock.h>
49 #include <machine/ipl.h>
52 #include <cam/cam_ccb.h>
53 #include <cam/cam_periph.h>
54 #include <cam/cam_sim.h>
55 #include <cam/cam_xpt.h>
56 #include <cam/cam_xpt_sim.h>
57 #include <cam/cam_xpt_periph.h>
58 #include <cam/cam_debug.h>
60 #include <cam/scsi/scsi_all.h>
61 #include <cam/scsi/scsi_message.h>
62 #include <cam/scsi/scsi_pass.h>
65 /* Datastructures internal to the xpt layer */
68 * Definition of an async handler callback block. These are used to add
69 * SIMs and peripherals to the async callback lists.
72 SLIST_ENTRY(async_node) links;
73 u_int32_t event_enable; /* Async Event enables */
74 void (*callback)(void *arg, u_int32_t code,
75 struct cam_path *path, void *args);
79 SLIST_HEAD(async_list, async_node);
80 SLIST_HEAD(periph_list, cam_periph);
81 static STAILQ_HEAD(highpowerlist, ccb_hdr) highpowerq;
84 * This is the maximum number of high powered commands (e.g. start unit)
85 * that can be outstanding at a particular time.
87 #ifndef CAM_MAX_HIGHPOWER
88 #define CAM_MAX_HIGHPOWER 4
91 /* number of high powered commands that can go through right now */
92 static int num_highpower = CAM_MAX_HIGHPOWER;
95 * Structure for queueing a device in a run queue.
96 * There is one run queue for allocating new ccbs,
97 * and another for sending ccbs to the controller.
101 struct cam_ed *device;
105 * The CAM EDT (Existing Device Table) contains the device information for
106 * all devices for all busses in the system. The table contains a
107 * cam_ed structure for each device on the bus.
110 TAILQ_ENTRY(cam_ed) links;
111 struct cam_ed_qinfo alloc_ccb_entry;
112 struct cam_ed_qinfo send_ccb_entry;
113 struct cam_et *target;
116 * Queue of type drivers wanting to do
117 * work on this device.
119 struct cam_ccbq ccbq; /* Queue of pending ccbs */
120 struct async_list asyncs; /* Async callback info for this B/T/L */
121 struct periph_list periphs; /* All attached devices */
122 u_int generation; /* Generation number */
123 struct cam_periph *owner; /* Peripheral driver's ownership tag */
124 struct xpt_quirk_entry *quirk; /* Oddities about this device */
125 /* Storage for the inquiry data */
126 struct scsi_inquiry_data inq_data;
127 u_int8_t inq_flags; /*
128 * Current settings for inquiry flags.
129 * This allows us to override settings
130 * like disconnection and tagged
131 * queuing for a device.
133 u_int8_t queue_flags; /* Queue flags from the control page */
134 u_int8_t serial_num_len;
135 u_int8_t *serial_num;
136 u_int32_t qfrozen_cnt;
138 #define CAM_DEV_UNCONFIGURED 0x01
139 #define CAM_DEV_REL_TIMEOUT_PENDING 0x02
140 #define CAM_DEV_REL_ON_COMPLETE 0x04
141 #define CAM_DEV_REL_ON_QUEUE_EMPTY 0x08
142 #define CAM_DEV_RESIZE_QUEUE_NEEDED 0x10
143 #define CAM_DEV_TAG_AFTER_COUNT 0x20
144 #define CAM_DEV_INQUIRY_DATA_VALID 0x40
145 u_int32_t tag_delay_count;
146 #define CAM_TAG_DELAY_COUNT 5
148 struct callout_handle c_handle;
152 * Each target is represented by an ET (Existing Target). These
153 * entries are created when a target is successfully probed with an
154 * identify, and removed when a device fails to respond after a number
155 * of retries, or a bus rescan finds the device missing.
158 TAILQ_HEAD(, cam_ed) ed_entries;
159 TAILQ_ENTRY(cam_et) links;
161 target_id_t target_id;
164 struct timeval last_reset;
168 * Each bus is represented by an EB (Existing Bus). These entries
169 * are created by calls to xpt_bus_register and deleted by calls to
170 * xpt_bus_deregister.
173 TAILQ_HEAD(, cam_et) et_entries;
174 TAILQ_ENTRY(cam_eb) links;
177 struct timeval last_reset;
179 #define CAM_EB_RUNQ_SCHEDULED 0x01
185 struct cam_periph *periph;
187 struct cam_et *target;
188 struct cam_ed *device;
191 struct xpt_quirk_entry {
192 struct scsi_inquiry_pattern inq_pat;
194 #define CAM_QUIRK_NOLUNS 0x01
195 #define CAM_QUIRK_NOSERIAL 0x02
196 #define CAM_QUIRK_HILUNS 0x04
200 #define CAM_SCSI2_MAXLUN 8
208 u_int32_t generation;
211 static const char quantum[] = "QUANTUM";
212 static const char sony[] = "SONY";
213 static const char west_digital[] = "WDIGTL";
214 static const char samsung[] = "SAMSUNG";
215 static const char seagate[] = "SEAGATE";
216 static const char microp[] = "MICROP";
218 static struct xpt_quirk_entry xpt_quirk_table[] =
221 /* Reports QUEUE FULL for temporary resource shortages */
222 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP39100*", "*" },
223 /*quirks*/0, /*mintags*/24, /*maxtags*/32
226 /* Reports QUEUE FULL for temporary resource shortages */
227 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP34550*", "*" },
228 /*quirks*/0, /*mintags*/24, /*maxtags*/32
231 /* Reports QUEUE FULL for temporary resource shortages */
232 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP32275*", "*" },
233 /*quirks*/0, /*mintags*/24, /*maxtags*/32
236 /* Broken tagged queuing drive */
237 { T_DIRECT, SIP_MEDIA_FIXED, microp, "4421-07*", "*" },
238 /*quirks*/0, /*mintags*/0, /*maxtags*/0
241 /* Broken tagged queuing drive */
242 { T_DIRECT, SIP_MEDIA_FIXED, "HP", "C372*", "*" },
243 /*quirks*/0, /*mintags*/0, /*maxtags*/0
246 /* Broken tagged queuing drive */
247 { T_DIRECT, SIP_MEDIA_FIXED, microp, "3391*", "x43h" },
248 /*quirks*/0, /*mintags*/0, /*maxtags*/0
252 * Unfortunately, the Quantum Atlas III has the same
253 * problem as the Atlas II drives above.
254 * Reported by: "Johan Granlund" <johan@granlund.nu>
256 * For future reference, the drive with the problem was:
257 * QUANTUM QM39100TD-SW N1B0
259 * It's possible that Quantum will fix the problem in later
260 * firmware revisions. If that happens, the quirk entry
261 * will need to be made specific to the firmware revisions
265 /* Reports QUEUE FULL for temporary resource shortages */
266 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "QM39100*", "*" },
267 /*quirks*/0, /*mintags*/24, /*maxtags*/32
271 * 18 Gig Atlas III, same problem as the 9G version.
272 * Reported by: Andre Albsmeier
273 * <andre.albsmeier@mchp.siemens.de>
275 * For future reference, the drive with the problem was:
276 * QUANTUM QM318000TD-S N491
278 /* Reports QUEUE FULL for temporary resource shortages */
279 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "QM318000*", "*" },
280 /*quirks*/0, /*mintags*/24, /*maxtags*/32
284 * Broken tagged queuing drive
285 * Reported by: Bret Ford <bford@uop.cs.uop.edu>
286 * and: Martin Renters <martin@tdc.on.ca>
288 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST410800*", "71*" },
289 /*quirks*/0, /*mintags*/0, /*maxtags*/0
292 * The Seagate Medalist Pro drives have very poor write
293 * performance with anything more than 2 tags.
295 * Reported by: Paul van der Zwan <paulz@trantor.xs4all.nl>
296 * Drive: <SEAGATE ST36530N 1444>
298 * Reported by: Jeremy Lea <reg@shale.csir.co.za>
299 * Drive: <SEAGATE ST34520W 1281>
301 * No one has actually reported that the 9G version
302 * (ST39140*) of the Medalist Pro has the same problem, but
303 * we're assuming that it does because the 4G and 6.5G
304 * versions of the drive are broken.
307 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST34520*", "*"},
308 /*quirks*/0, /*mintags*/2, /*maxtags*/2
311 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST36530*", "*"},
312 /*quirks*/0, /*mintags*/2, /*maxtags*/2
315 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST39140*", "*"},
316 /*quirks*/0, /*mintags*/2, /*maxtags*/2
320 * Slow when tagged queueing is enabled. Write performance
321 * steadily drops off with more and more concurrent
322 * transactions. Best sequential write performance with
323 * tagged queueing turned off and write caching turned on.
326 * Submitted by: Hideaki Okada <hokada@isl.melco.co.jp>
327 * Drive: DCAS-34330 w/ "S65A" firmware.
329 * The drive with the problem had the "S65A" firmware
330 * revision, and has also been reported (by Stephen J.
331 * Roznowski <sjr@home.net>) for a drive with the "S61A"
334 * Although no one has reported problems with the 2 gig
335 * version of the DCAS drive, the assumption is that it
336 * has the same problems as the 4 gig version. Therefore
337 * this quirk entries disables tagged queueing for all
340 { T_DIRECT, SIP_MEDIA_FIXED, "IBM", "DCAS*", "*" },
341 /*quirks*/0, /*mintags*/0, /*maxtags*/0
344 /* Broken tagged queuing drive */
345 { T_DIRECT, SIP_MEDIA_REMOVABLE, "iomega", "jaz*", "*" },
346 /*quirks*/0, /*mintags*/0, /*maxtags*/0
349 /* Broken tagged queuing drive */
350 { T_DIRECT, SIP_MEDIA_FIXED, "CONNER", "CFP2107*", "*" },
351 /*quirks*/0, /*mintags*/0, /*maxtags*/0
355 * Broken tagged queuing drive.
357 * NAKAJI Hiroyuki <nakaji@zeisei.dpri.kyoto-u.ac.jp>
360 { T_DIRECT, SIP_MEDIA_FIXED, samsung, "WN34324U*", "*" },
361 /*quirks*/0, /*mintags*/0, /*maxtags*/0
365 * Slow when tagged queueing is enabled. (1.5MB/sec versus
367 * Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
368 * Best performance with these drives is achieved with
369 * tagged queueing turned off, and write caching turned on.
371 { T_DIRECT, SIP_MEDIA_FIXED, west_digital, "WDE*", "*" },
372 /*quirks*/0, /*mintags*/0, /*maxtags*/0
376 * Slow when tagged queueing is enabled. (1.5MB/sec versus
378 * Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
379 * Best performance with these drives is achieved with
380 * tagged queueing turned off, and write caching turned on.
382 { T_DIRECT, SIP_MEDIA_FIXED, west_digital, "ENTERPRISE", "*" },
383 /*quirks*/0, /*mintags*/0, /*maxtags*/0
387 * Doesn't handle queue full condition correctly,
388 * so we need to limit maxtags to what the device
389 * can handle instead of determining this automatically.
391 { T_DIRECT, SIP_MEDIA_FIXED, samsung, "WN321010S*", "*" },
392 /*quirks*/0, /*mintags*/2, /*maxtags*/32
395 /* Really only one LUN */
396 { T_ENCLOSURE, SIP_MEDIA_FIXED, "SUN", "SENA", "*" },
397 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
400 /* I can't believe we need a quirk for DPT volumes. */
401 { T_ANY, SIP_MEDIA_FIXED|SIP_MEDIA_REMOVABLE, "DPT", "*", "*" },
402 CAM_QUIRK_NOSERIAL|CAM_QUIRK_NOLUNS,
403 /*mintags*/0, /*maxtags*/255
407 * Many Sony CDROM drives don't like multi-LUN probing.
409 { T_CDROM, SIP_MEDIA_REMOVABLE, sony, "CD-ROM CDU*", "*" },
410 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
414 * This drive doesn't like multiple LUN probing.
415 * Submitted by: Parag Patel <parag@cgt.com>
417 { T_WORM, SIP_MEDIA_REMOVABLE, sony, "CD-R CDU9*", "*" },
418 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
421 { T_WORM, SIP_MEDIA_REMOVABLE, "YAMAHA", "CDR100*", "*" },
422 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
426 * The 8200 doesn't like multi-lun probing, and probably
427 * don't like serial number requests either.
430 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "EXABYTE",
433 CAM_QUIRK_NOSERIAL|CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
437 * Let's try the same as above, but for a drive that says
438 * it's an IPL-6860 but is actually an EXB 8200.
441 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "EXABYTE",
444 CAM_QUIRK_NOSERIAL|CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
448 * These Hitachi drives don't like multi-lun probing.
449 * The PR submitter has a DK319H, but says that the Linux
450 * kernel has a similar work-around for the DK312 and DK314,
451 * so all DK31* drives are quirked here.
453 * Submitted by: Paul Haddad <paul@pth.com>
455 { T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "DK31*", "*" },
456 CAM_QUIRK_NOLUNS, /*mintags*/2, /*maxtags*/255
460 * This old revision of the TDC3600 is also SCSI-1, and
461 * hangs upon serial number probing.
464 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
467 CAM_QUIRK_NOSERIAL, /*mintags*/0, /*maxtags*/0
471 * Would repond to all LUNs if asked for.
474 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "CALIPER",
477 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
481 * Would repond to all LUNs if asked for.
484 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY",
487 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
490 /* Submitted by: Matthew Dodd <winter@jurai.net> */
491 { T_PROCESSOR, SIP_MEDIA_FIXED, "Cabletrn", "EA41*", "*" },
492 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
495 /* Submitted by: Matthew Dodd <winter@jurai.net> */
496 { T_PROCESSOR, SIP_MEDIA_FIXED, "CABLETRN", "EA41*", "*" },
497 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
500 /* TeraSolutions special settings for TRC-22 RAID */
501 { T_DIRECT, SIP_MEDIA_FIXED, "TERASOLU", "TRC-22", "*" },
502 /*quirks*/0, /*mintags*/55, /*maxtags*/255
505 /* Veritas Storage Appliance */
506 { T_DIRECT, SIP_MEDIA_FIXED, "VERITAS", "*", "*" },
507 CAM_QUIRK_HILUNS, /*mintags*/2, /*maxtags*/1024
511 * Would respond to all LUNs. Device type and removable
512 * flag are jumper-selectable.
514 { T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED, "MaxOptix",
517 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
520 /* Default tagged queuing parameters for all devices */
522 T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED,
523 /*vendor*/"*", /*product*/"*", /*revision*/"*"
525 /*quirks*/0, /*mintags*/2, /*maxtags*/255
529 static const int xpt_quirk_table_size =
530 sizeof(xpt_quirk_table) / sizeof(*xpt_quirk_table);
534 DM_RET_FLAG_MASK = 0x0f,
537 DM_RET_DESCEND = 0x20,
539 DM_RET_ACTION_MASK = 0xf0
547 } xpt_traverse_depth;
549 struct xpt_traverse_config {
550 xpt_traverse_depth depth;
555 typedef int xpt_busfunc_t (struct cam_eb *bus, void *arg);
556 typedef int xpt_targetfunc_t (struct cam_et *target, void *arg);
557 typedef int xpt_devicefunc_t (struct cam_ed *device, void *arg);
558 typedef int xpt_periphfunc_t (struct cam_periph *periph, void *arg);
559 typedef int xpt_pdrvfunc_t (struct periph_driver **pdrv, void *arg);
561 /* Transport layer configuration information */
562 static struct xpt_softc xsoftc;
564 /* Queues for our software interrupt handler */
565 typedef TAILQ_HEAD(cam_isrq, ccb_hdr) cam_isrq_t;
566 static cam_isrq_t cam_bioq;
567 static cam_isrq_t cam_netq;
569 /* "Pool" of inactive ccbs managed by xpt_alloc_ccb and xpt_free_ccb */
570 static SLIST_HEAD(,ccb_hdr) ccb_freeq;
571 static u_int xpt_max_ccbs; /*
572 * Maximum size of ccb pool. Modified as
573 * devices are added/removed or have their
574 * opening counts changed.
576 static u_int xpt_ccb_count; /* Current count of allocated ccbs */
578 struct cam_periph *xpt_periph;
580 static periph_init_t xpt_periph_init;
582 static periph_init_t probe_periph_init;
584 static struct periph_driver xpt_driver =
586 xpt_periph_init, "xpt",
587 TAILQ_HEAD_INITIALIZER(xpt_driver.units)
590 static struct periph_driver probe_driver =
592 probe_periph_init, "probe",
593 TAILQ_HEAD_INITIALIZER(probe_driver.units)
596 DATA_SET(periphdriver_set, xpt_driver);
597 DATA_SET(periphdriver_set, probe_driver);
599 #define XPT_CDEV_MAJOR 104
601 static d_open_t xptopen;
602 static d_close_t xptclose;
603 static d_ioctl_t xptioctl;
605 static struct cdevsw xpt_cdevsw = {
607 /* close */ xptclose,
610 /* ioctl */ xptioctl,
613 /* strategy */ nostrategy,
615 /* maj */ XPT_CDEV_MAJOR,
622 static struct intr_config_hook *xpt_config_hook;
624 /* Registered busses */
625 static TAILQ_HEAD(,cam_eb) xpt_busses;
626 static u_int bus_generation;
628 /* Storage for debugging datastructures */
630 struct cam_path *cam_dpath;
631 u_int32_t cam_dflags;
632 u_int32_t cam_debug_delay;
635 #if defined(CAM_DEBUG_FLAGS) && !defined(CAMDEBUG)
636 #error "You must have options CAMDEBUG to use options CAM_DEBUG_FLAGS"
640 * In order to enable the CAM_DEBUG_* options, the user must have CAMDEBUG
641 * enabled. Also, the user must have either none, or all of CAM_DEBUG_BUS,
642 * CAM_DEBUG_TARGET, and CAM_DEBUG_LUN specified.
644 #if defined(CAM_DEBUG_BUS) || defined(CAM_DEBUG_TARGET) \
645 || defined(CAM_DEBUG_LUN)
647 #if !defined(CAM_DEBUG_BUS) || !defined(CAM_DEBUG_TARGET) \
648 || !defined(CAM_DEBUG_LUN)
649 #error "You must define all or none of CAM_DEBUG_BUS, CAM_DEBUG_TARGET \
651 #endif /* !CAM_DEBUG_BUS || !CAM_DEBUG_TARGET || !CAM_DEBUG_LUN */
652 #else /* !CAMDEBUG */
653 #error "You must use options CAMDEBUG if you use the CAM_DEBUG_* options"
654 #endif /* CAMDEBUG */
655 #endif /* CAM_DEBUG_BUS || CAM_DEBUG_TARGET || CAM_DEBUG_LUN */
657 /* Our boot-time initialization hook */
658 static void xpt_init(void *);
659 SYSINIT(cam, SI_SUB_CONFIGURE, SI_ORDER_SECOND, xpt_init, NULL);
661 static cam_status xpt_compile_path(struct cam_path *new_path,
662 struct cam_periph *perph,
664 target_id_t target_id,
667 static void xpt_release_path(struct cam_path *path);
669 static void xpt_async_bcast(struct async_list *async_head,
670 u_int32_t async_code,
671 struct cam_path *path,
673 static void xpt_dev_async(u_int32_t async_code,
675 struct cam_et *target,
676 struct cam_ed *device,
678 static path_id_t xptnextfreepathid(void);
679 static path_id_t xptpathid(const char *sim_name, int sim_unit, int sim_bus);
680 static union ccb *xpt_get_ccb(struct cam_ed *device);
681 static int xpt_schedule_dev(struct camq *queue, cam_pinfo *dev_pinfo,
682 u_int32_t new_priority);
683 static void xpt_run_dev_allocq(struct cam_eb *bus);
684 static void xpt_run_dev_sendq(struct cam_eb *bus);
685 static timeout_t xpt_release_devq_timeout;
686 static timeout_t xpt_release_simq_timeout;
687 static void xpt_release_bus(struct cam_eb *bus);
688 static void xpt_release_devq_device(struct cam_ed *dev, u_int count,
690 static struct cam_et*
691 xpt_alloc_target(struct cam_eb *bus, target_id_t target_id);
692 static void xpt_release_target(struct cam_eb *bus, struct cam_et *target);
693 static struct cam_ed*
694 xpt_alloc_device(struct cam_eb *bus, struct cam_et *target,
696 static void xpt_release_device(struct cam_eb *bus, struct cam_et *target,
697 struct cam_ed *device);
698 static u_int32_t xpt_dev_ccbq_resize(struct cam_path *path, int newopenings);
699 static struct cam_eb*
700 xpt_find_bus(path_id_t path_id);
701 static struct cam_et*
702 xpt_find_target(struct cam_eb *bus, target_id_t target_id);
703 static struct cam_ed*
704 xpt_find_device(struct cam_et *target, lun_id_t lun_id);
705 static void xpt_scan_bus(struct cam_periph *periph, union ccb *ccb);
706 static void xpt_scan_lun(struct cam_periph *periph,
707 struct cam_path *path, cam_flags flags,
709 static void xptscandone(struct cam_periph *periph, union ccb *done_ccb);
710 static xpt_busfunc_t xptconfigbuscountfunc;
711 static xpt_busfunc_t xptconfigfunc;
712 static void xpt_config(void *arg);
713 static xpt_devicefunc_t xptpassannouncefunc;
714 static void xpt_finishconfig(struct cam_periph *periph, union ccb *ccb);
715 static void xptaction(struct cam_sim *sim, union ccb *work_ccb);
716 static void xptpoll(struct cam_sim *sim);
717 static swihand_t swi_camnet;
718 static swihand_t swi_cambio;
719 static void camisr(cam_isrq_t *queue);
721 static void xptstart(struct cam_periph *periph, union ccb *work_ccb);
722 static void xptasync(struct cam_periph *periph,
723 u_int32_t code, cam_path *path);
725 static dev_match_ret xptbusmatch(struct dev_match_pattern *patterns,
726 int num_patterns, struct cam_eb *bus);
727 static dev_match_ret xptdevicematch(struct dev_match_pattern *patterns,
728 int num_patterns, struct cam_ed *device);
729 static dev_match_ret xptperiphmatch(struct dev_match_pattern *patterns,
731 struct cam_periph *periph);
732 static xpt_busfunc_t xptedtbusfunc;
733 static xpt_targetfunc_t xptedttargetfunc;
734 static xpt_devicefunc_t xptedtdevicefunc;
735 static xpt_periphfunc_t xptedtperiphfunc;
736 static xpt_pdrvfunc_t xptplistpdrvfunc;
737 static xpt_periphfunc_t xptplistperiphfunc;
738 static int xptedtmatch(struct ccb_dev_match *cdm);
739 static int xptperiphlistmatch(struct ccb_dev_match *cdm);
740 static int xptbustraverse(struct cam_eb *start_bus,
741 xpt_busfunc_t *tr_func, void *arg);
742 static int xpttargettraverse(struct cam_eb *bus,
743 struct cam_et *start_target,
744 xpt_targetfunc_t *tr_func, void *arg);
745 static int xptdevicetraverse(struct cam_et *target,
746 struct cam_ed *start_device,
747 xpt_devicefunc_t *tr_func, void *arg);
748 static int xptperiphtraverse(struct cam_ed *device,
749 struct cam_periph *start_periph,
750 xpt_periphfunc_t *tr_func, void *arg);
751 static int xptpdrvtraverse(struct periph_driver **start_pdrv,
752 xpt_pdrvfunc_t *tr_func, void *arg);
753 static int xptpdperiphtraverse(struct periph_driver **pdrv,
754 struct cam_periph *start_periph,
755 xpt_periphfunc_t *tr_func,
757 static xpt_busfunc_t xptdefbusfunc;
758 static xpt_targetfunc_t xptdeftargetfunc;
759 static xpt_devicefunc_t xptdefdevicefunc;
760 static xpt_periphfunc_t xptdefperiphfunc;
761 static int xpt_for_all_busses(xpt_busfunc_t *tr_func, void *arg);
763 static int xpt_for_all_targets(xpt_targetfunc_t *tr_func,
766 static int xpt_for_all_devices(xpt_devicefunc_t *tr_func,
769 static int xpt_for_all_periphs(xpt_periphfunc_t *tr_func,
772 static xpt_devicefunc_t xptsetasyncfunc;
773 static xpt_busfunc_t xptsetasyncbusfunc;
774 static cam_status xptregister(struct cam_periph *periph,
776 static cam_status proberegister(struct cam_periph *periph,
778 static void probeschedule(struct cam_periph *probe_periph);
779 static void probestart(struct cam_periph *periph, union ccb *start_ccb);
780 static void proberequestdefaultnegotiation(struct cam_periph *periph);
781 static void probedone(struct cam_periph *periph, union ccb *done_ccb);
782 static void probecleanup(struct cam_periph *periph);
783 static void xpt_find_quirk(struct cam_ed *device);
784 static void xpt_set_transfer_settings(struct ccb_trans_settings *cts,
785 struct cam_ed *device,
787 static void xpt_toggle_tags(struct cam_path *path);
788 static void xpt_start_tags(struct cam_path *path);
789 static __inline int xpt_schedule_dev_allocq(struct cam_eb *bus,
791 static __inline int xpt_schedule_dev_sendq(struct cam_eb *bus,
793 static __inline int periph_is_queued(struct cam_periph *periph);
794 static __inline int device_is_alloc_queued(struct cam_ed *device);
795 static __inline int device_is_send_queued(struct cam_ed *device);
796 static __inline int dev_allocq_is_runnable(struct cam_devq *devq);
799 xpt_schedule_dev_allocq(struct cam_eb *bus, struct cam_ed *dev)
803 if (dev->ccbq.devq_openings > 0) {
804 if ((dev->flags & CAM_DEV_RESIZE_QUEUE_NEEDED) != 0) {
805 cam_ccbq_resize(&dev->ccbq,
806 dev->ccbq.dev_openings
807 + dev->ccbq.dev_active);
808 dev->flags &= ~CAM_DEV_RESIZE_QUEUE_NEEDED;
811 * The priority of a device waiting for CCB resources
812 * is that of the the highest priority peripheral driver
815 retval = xpt_schedule_dev(&bus->sim->devq->alloc_queue,
816 &dev->alloc_ccb_entry.pinfo,
817 CAMQ_GET_HEAD(&dev->drvq)->priority);
826 xpt_schedule_dev_sendq(struct cam_eb *bus, struct cam_ed *dev)
830 if (dev->ccbq.dev_openings > 0) {
832 * The priority of a device waiting for controller
833 * resources is that of the the highest priority CCB
837 xpt_schedule_dev(&bus->sim->devq->send_queue,
838 &dev->send_ccb_entry.pinfo,
839 CAMQ_GET_HEAD(&dev->ccbq.queue)->priority);
847 periph_is_queued(struct cam_periph *periph)
849 return (periph->pinfo.index != CAM_UNQUEUED_INDEX);
853 device_is_alloc_queued(struct cam_ed *device)
855 return (device->alloc_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX);
859 device_is_send_queued(struct cam_ed *device)
861 return (device->send_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX);
865 dev_allocq_is_runnable(struct cam_devq *devq)
869 * Have space to do more work.
870 * Allowed to do work.
872 return ((devq->alloc_queue.qfrozen_cnt == 0)
873 && (devq->alloc_queue.entries > 0)
874 && (devq->alloc_openings > 0));
880 make_dev(&xpt_cdevsw, 0, UID_ROOT, GID_OPERATOR, 0600, "xpt0");
890 xptdone(struct cam_periph *periph, union ccb *done_ccb)
892 /* Caller will release the CCB */
893 wakeup(&done_ccb->ccb_h.cbfcnp);
897 xptopen(dev_t dev, int flags, int fmt, struct proc *p)
901 unit = minor(dev) & 0xff;
904 * Only allow read-write access.
906 if (((flags & FWRITE) == 0) || ((flags & FREAD) == 0))
910 * We don't allow nonblocking access.
912 if ((flags & O_NONBLOCK) != 0) {
913 printf("xpt%d: can't do nonblocking access\n", unit);
918 * We only have one transport layer right now. If someone accesses
919 * us via something other than minor number 1, point out their
923 printf("xptopen: got invalid xpt unit %d\n", unit);
927 /* Mark ourselves open */
928 xsoftc.flags |= XPT_FLAG_OPEN;
934 xptclose(dev_t dev, int flag, int fmt, struct proc *p)
938 unit = minor(dev) & 0xff;
941 * We only have one transport layer right now. If someone accesses
942 * us via something other than minor number 1, point out their
946 printf("xptclose: got invalid xpt unit %d\n", unit);
950 /* Mark ourselves closed */
951 xsoftc.flags &= ~XPT_FLAG_OPEN;
957 xptioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p)
962 unit = minor(dev) & 0xff;
965 * We only have one transport layer right now. If someone accesses
966 * us via something other than minor number 1, point out their
970 printf("xptioctl: got invalid xpt unit %d\n", unit);
976 * For the transport layer CAMIOCOMMAND ioctl, we really only want
977 * to accept CCB types that don't quite make sense to send through a
978 * passthrough driver.
984 inccb = (union ccb *)addr;
986 switch(inccb->ccb_h.func_code) {
989 if ((inccb->ccb_h.target_id != CAM_TARGET_WILDCARD)
990 || (inccb->ccb_h.target_lun != CAM_LUN_WILDCARD)) {
999 ccb = xpt_alloc_ccb();
1002 * Create a path using the bus, target, and lun the
1005 if (xpt_create_path(&ccb->ccb_h.path, xpt_periph,
1006 inccb->ccb_h.path_id,
1007 inccb->ccb_h.target_id,
1008 inccb->ccb_h.target_lun) !=
1014 /* Ensure all of our fields are correct */
1015 xpt_setup_ccb(&ccb->ccb_h, ccb->ccb_h.path,
1016 inccb->ccb_h.pinfo.priority);
1017 xpt_merge_ccb(ccb, inccb);
1018 ccb->ccb_h.cbfcnp = xptdone;
1019 cam_periph_runccb(ccb, NULL, 0, 0, NULL);
1020 bcopy(ccb, inccb, sizeof(union ccb));
1021 xpt_free_path(ccb->ccb_h.path);
1029 * This is an immediate CCB, so it's okay to
1030 * allocate it on the stack.
1034 * Create a path using the bus, target, and lun the
1037 if (xpt_create_path(&ccb.ccb_h.path, xpt_periph,
1038 inccb->ccb_h.path_id,
1039 inccb->ccb_h.target_id,
1040 inccb->ccb_h.target_lun) !=
1045 /* Ensure all of our fields are correct */
1046 xpt_setup_ccb(&ccb.ccb_h, ccb.ccb_h.path,
1047 inccb->ccb_h.pinfo.priority);
1048 xpt_merge_ccb(&ccb, inccb);
1049 ccb.ccb_h.cbfcnp = xptdone;
1051 bcopy(&ccb, inccb, sizeof(union ccb));
1052 xpt_free_path(ccb.ccb_h.path);
1056 case XPT_DEV_MATCH: {
1057 struct cam_periph_map_info mapinfo;
1058 struct cam_path *old_path;
1061 * We can't deal with physical addresses for this
1062 * type of transaction.
1064 if (inccb->ccb_h.flags & CAM_DATA_PHYS) {
1070 * Save this in case the caller had it set to
1071 * something in particular.
1073 old_path = inccb->ccb_h.path;
1076 * We really don't need a path for the matching
1077 * code. The path is needed because of the
1078 * debugging statements in xpt_action(). They
1079 * assume that the CCB has a valid path.
1081 inccb->ccb_h.path = xpt_periph->path;
1083 bzero(&mapinfo, sizeof(mapinfo));
1086 * Map the pattern and match buffers into kernel
1087 * virtual address space.
1089 error = cam_periph_mapmem(inccb, &mapinfo);
1092 inccb->ccb_h.path = old_path;
1097 * This is an immediate CCB, we can send it on directly.
1102 * Map the buffers back into user space.
1104 cam_periph_unmapmem(inccb, &mapinfo);
1106 inccb->ccb_h.path = old_path;
1118 * This is the getpassthru ioctl. It takes a XPT_GDEVLIST ccb as input,
1119 * with the periphal driver name and unit name filled in. The other
1120 * fields don't really matter as input. The passthrough driver name
1121 * ("pass"), and unit number are passed back in the ccb. The current
1122 * device generation number, and the index into the device peripheral
1123 * driver list, and the status are also passed back. Note that
1124 * since we do everything in one pass, unlike the XPT_GDEVLIST ccb,
1125 * we never return a status of CAM_GDEVLIST_LIST_CHANGED. It is
1126 * (or rather should be) impossible for the device peripheral driver
1127 * list to change since we look at the whole thing in one pass, and
1128 * we do it with splcam protection.
1131 case CAMGETPASSTHRU: {
1133 struct cam_periph *periph;
1134 struct periph_driver **p_drv;
1138 int base_periph_found;
1142 ccb = (union ccb *)addr;
1143 unit = ccb->cgdl.unit_number;
1144 name = ccb->cgdl.periph_name;
1146 * Every 100 devices, we want to drop our spl protection to
1147 * give the software interrupt handler a chance to run.
1148 * Most systems won't run into this check, but this should
1149 * avoid starvation in the software interrupt handler in
1154 ccb = (union ccb *)addr;
1156 base_periph_found = 0;
1159 * Sanity check -- make sure we don't get a null peripheral
1162 if (*ccb->cgdl.periph_name == '\0') {
1167 /* Keep the list from changing while we traverse it */
1170 cur_generation = xsoftc.generation;
1172 /* first find our driver in the list of drivers */
1173 for (p_drv = (struct periph_driver **)periphdriver_set.ls_items;
1174 *p_drv != NULL; p_drv++)
1175 if (strcmp((*p_drv)->driver_name, name) == 0)
1178 if (*p_drv == NULL) {
1180 ccb->ccb_h.status = CAM_REQ_CMP_ERR;
1181 ccb->cgdl.status = CAM_GDEVLIST_ERROR;
1182 *ccb->cgdl.periph_name = '\0';
1183 ccb->cgdl.unit_number = 0;
1189 * Run through every peripheral instance of this driver
1190 * and check to see whether it matches the unit passed
1191 * in by the user. If it does, get out of the loops and
1192 * find the passthrough driver associated with that
1193 * peripheral driver.
1195 for (periph = TAILQ_FIRST(&(*p_drv)->units); periph != NULL;
1196 periph = TAILQ_NEXT(periph, unit_links)) {
1198 if (periph->unit_number == unit) {
1200 } else if (--splbreaknum == 0) {
1204 if (cur_generation != xsoftc.generation)
1209 * If we found the peripheral driver that the user passed
1210 * in, go through all of the peripheral drivers for that
1211 * particular device and look for a passthrough driver.
1213 if (periph != NULL) {
1214 struct cam_ed *device;
1217 base_periph_found = 1;
1218 device = periph->path->device;
1219 for (i = 0, periph = device->periphs.slh_first;
1221 periph = periph->periph_links.sle_next, i++) {
1223 * Check to see whether we have a
1224 * passthrough device or not.
1226 if (strcmp(periph->periph_name, "pass") == 0) {
1228 * Fill in the getdevlist fields.
1230 strcpy(ccb->cgdl.periph_name,
1231 periph->periph_name);
1232 ccb->cgdl.unit_number =
1233 periph->unit_number;
1234 if (periph->periph_links.sle_next)
1236 CAM_GDEVLIST_MORE_DEVS;
1239 CAM_GDEVLIST_LAST_DEVICE;
1240 ccb->cgdl.generation =
1242 ccb->cgdl.index = i;
1244 * Fill in some CCB header fields
1245 * that the user may want.
1247 ccb->ccb_h.path_id =
1248 periph->path->bus->path_id;
1249 ccb->ccb_h.target_id =
1250 periph->path->target->target_id;
1251 ccb->ccb_h.target_lun =
1252 periph->path->device->lun_id;
1253 ccb->ccb_h.status = CAM_REQ_CMP;
1260 * If the periph is null here, one of two things has
1261 * happened. The first possibility is that we couldn't
1262 * find the unit number of the particular peripheral driver
1263 * that the user is asking about. e.g. the user asks for
1264 * the passthrough driver for "da11". We find the list of
1265 * "da" peripherals all right, but there is no unit 11.
1266 * The other possibility is that we went through the list
1267 * of peripheral drivers attached to the device structure,
1268 * but didn't find one with the name "pass". Either way,
1269 * we return ENOENT, since we couldn't find something.
1271 if (periph == NULL) {
1272 ccb->ccb_h.status = CAM_REQ_CMP_ERR;
1273 ccb->cgdl.status = CAM_GDEVLIST_ERROR;
1274 *ccb->cgdl.periph_name = '\0';
1275 ccb->cgdl.unit_number = 0;
1278 * It is unfortunate that this is even necessary,
1279 * but there are many, many clueless users out there.
1280 * If this is true, the user is looking for the
1281 * passthrough driver, but doesn't have one in his
1284 if (base_periph_found == 1) {
1285 printf("xptioctl: pass driver is not in the "
1287 printf("xptioctl: put \"device pass0\" in "
1288 "your kernel config file\n");
1302 /* Functions accessed by the peripheral drivers */
1307 struct cam_sim *xpt_sim;
1308 struct cam_path *path;
1309 struct cam_devq *devq;
1312 TAILQ_INIT(&xpt_busses);
1313 TAILQ_INIT(&cam_bioq);
1314 TAILQ_INIT(&cam_netq);
1315 SLIST_INIT(&ccb_freeq);
1316 STAILQ_INIT(&highpowerq);
1319 * The xpt layer is, itself, the equivelent of a SIM.
1320 * Allow 16 ccbs in the ccb pool for it. This should
1321 * give decent parallelism when we probe busses and
1322 * perform other XPT functions.
1324 devq = cam_simq_alloc(16);
1325 xpt_sim = cam_sim_alloc(xptaction,
1330 /*max_dev_transactions*/0,
1331 /*max_tagged_dev_transactions*/0,
1335 xpt_bus_register(xpt_sim, /*bus #*/0);
1338 * Looking at the XPT from the SIM layer, the XPT is
1339 * the equivelent of a peripheral driver. Allocate
1340 * a peripheral driver entry for us.
1342 if ((status = xpt_create_path(&path, NULL, CAM_XPT_PATH_ID,
1343 CAM_TARGET_WILDCARD,
1344 CAM_LUN_WILDCARD)) != CAM_REQ_CMP) {
1345 printf("xpt_init: xpt_create_path failed with status %#x,"
1346 " failing attach\n", status);
1350 cam_periph_alloc(xptregister, NULL, NULL, NULL, "xpt", CAM_PERIPH_BIO,
1351 path, NULL, 0, NULL);
1352 xpt_free_path(path);
1354 xpt_sim->softc = xpt_periph;
1357 * Register a callback for when interrupts are enabled.
1360 (struct intr_config_hook *)malloc(sizeof(struct intr_config_hook),
1361 M_TEMP, M_NOWAIT | M_ZERO);
1362 if (xpt_config_hook == NULL) {
1363 printf("xpt_init: Cannot malloc config hook "
1364 "- failing attach\n");
1368 xpt_config_hook->ich_func = xpt_config;
1369 if (config_intrhook_establish(xpt_config_hook) != 0) {
1370 free (xpt_config_hook, M_TEMP);
1371 printf("xpt_init: config_intrhook_establish failed "
1372 "- failing attach\n");
1375 /* Install our software interrupt handlers */
1376 register_swi(SWI_CAMNET, swi_camnet);
1377 register_swi(SWI_CAMBIO, swi_cambio);
1381 xptregister(struct cam_periph *periph, void *arg)
1383 if (periph == NULL) {
1384 printf("xptregister: periph was NULL!!\n");
1385 return(CAM_REQ_CMP_ERR);
1388 periph->softc = NULL;
1390 xpt_periph = periph;
1392 return(CAM_REQ_CMP);
1396 xpt_add_periph(struct cam_periph *periph)
1398 struct cam_ed *device;
1400 struct periph_list *periph_head;
1402 device = periph->path->device;
1404 periph_head = &device->periphs;
1406 status = CAM_REQ_CMP;
1408 if (device != NULL) {
1412 * Make room for this peripheral
1413 * so it will fit in the queue
1414 * when it's scheduled to run
1417 status = camq_resize(&device->drvq,
1418 device->drvq.array_size + 1);
1420 device->generation++;
1422 SLIST_INSERT_HEAD(periph_head, periph, periph_links);
1427 xsoftc.generation++;
1433 xpt_remove_periph(struct cam_periph *periph)
1435 struct cam_ed *device;
1437 device = periph->path->device;
1439 if (device != NULL) {
1441 struct periph_list *periph_head;
1443 periph_head = &device->periphs;
1445 /* Release the slot for this peripheral */
1447 camq_resize(&device->drvq, device->drvq.array_size - 1);
1449 device->generation++;
1451 SLIST_REMOVE(periph_head, periph, cam_periph, periph_links);
1456 xsoftc.generation++;
1461 xpt_announce_periph(struct cam_periph *periph, char *announce_string)
1465 struct cam_path *path;
1466 struct ccb_trans_settings cts;
1468 path = periph->path;
1470 * To ensure that this is printed in one piece,
1471 * mask out CAM interrupts.
1474 printf("%s%d at %s%d bus %d target %d lun %d\n",
1475 periph->periph_name, periph->unit_number,
1476 path->bus->sim->sim_name,
1477 path->bus->sim->unit_number,
1478 path->bus->sim->bus_id,
1479 path->target->target_id,
1480 path->device->lun_id);
1481 printf("%s%d: ", periph->periph_name, periph->unit_number);
1482 scsi_print_inquiry(&path->device->inq_data);
1484 && (path->device->serial_num_len > 0)) {
1485 /* Don't wrap the screen - print only the first 60 chars */
1486 printf("%s%d: Serial Number %.60s\n", periph->periph_name,
1487 periph->unit_number, path->device->serial_num);
1489 xpt_setup_ccb(&cts.ccb_h, path, /*priority*/1);
1490 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
1491 cts.flags = CCB_TRANS_CURRENT_SETTINGS;
1492 xpt_action((union ccb*)&cts);
1493 if (cts.ccb_h.status == CAM_REQ_CMP) {
1497 if ((cts.valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0
1498 && cts.sync_offset != 0) {
1499 freq = scsi_calc_syncsrate(cts.sync_period);
1502 struct ccb_pathinq cpi;
1504 /* Ask the SIM for its base transfer speed */
1505 xpt_setup_ccb(&cpi.ccb_h, path, /*priority*/1);
1506 cpi.ccb_h.func_code = XPT_PATH_INQ;
1507 xpt_action((union ccb *)&cpi);
1509 speed = cpi.base_transfer_speed;
1512 if ((cts.valid & CCB_TRANS_BUS_WIDTH_VALID) != 0)
1513 speed *= (0x01 << cts.bus_width);
1516 printf("%s%d: %d.%03dMB/s transfers",
1517 periph->periph_name, periph->unit_number,
1520 printf("%s%d: %dKB/s transfers", periph->periph_name,
1521 periph->unit_number, speed);
1522 if ((cts.valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0
1523 && cts.sync_offset != 0) {
1524 printf(" (%d.%03dMHz, offset %d", freq / 1000,
1525 freq % 1000, cts.sync_offset);
1527 if ((cts.valid & CCB_TRANS_BUS_WIDTH_VALID) != 0
1528 && cts.bus_width > 0) {
1529 if ((cts.valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0
1530 && cts.sync_offset != 0) {
1535 printf("%dbit)", 8 * (0x01 << cts.bus_width));
1536 } else if ((cts.valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0
1537 && cts.sync_offset != 0) {
1541 if (path->device->inq_flags & SID_CmdQue
1542 || path->device->flags & CAM_DEV_TAG_AFTER_COUNT) {
1543 printf(", Tagged Queueing Enabled");
1547 } else if (path->device->inq_flags & SID_CmdQue
1548 || path->device->flags & CAM_DEV_TAG_AFTER_COUNT) {
1549 printf("%s%d: Tagged Queueing Enabled\n",
1550 periph->periph_name, periph->unit_number);
1554 * We only want to print the caller's announce string if they've
1557 if (announce_string != NULL)
1558 printf("%s%d: %s\n", periph->periph_name,
1559 periph->unit_number, announce_string);
1564 static dev_match_ret
1565 xptbusmatch(struct dev_match_pattern *patterns, int num_patterns,
1568 dev_match_ret retval;
1571 retval = DM_RET_NONE;
1574 * If we aren't given something to match against, that's an error.
1577 return(DM_RET_ERROR);
1580 * If there are no match entries, then this bus matches no
1583 if ((patterns == NULL) || (num_patterns == 0))
1584 return(DM_RET_DESCEND | DM_RET_COPY);
1586 for (i = 0; i < num_patterns; i++) {
1587 struct bus_match_pattern *cur_pattern;
1590 * If the pattern in question isn't for a bus node, we
1591 * aren't interested. However, we do indicate to the
1592 * calling routine that we should continue descending the
1593 * tree, since the user wants to match against lower-level
1596 if (patterns[i].type != DEV_MATCH_BUS) {
1597 if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)
1598 retval |= DM_RET_DESCEND;
1602 cur_pattern = &patterns[i].pattern.bus_pattern;
1605 * If they want to match any bus node, we give them any
1608 if (cur_pattern->flags == BUS_MATCH_ANY) {
1609 /* set the copy flag */
1610 retval |= DM_RET_COPY;
1613 * If we've already decided on an action, go ahead
1616 if ((retval & DM_RET_ACTION_MASK) != DM_RET_NONE)
1621 * Not sure why someone would do this...
1623 if (cur_pattern->flags == BUS_MATCH_NONE)
1626 if (((cur_pattern->flags & BUS_MATCH_PATH) != 0)
1627 && (cur_pattern->path_id != bus->path_id))
1630 if (((cur_pattern->flags & BUS_MATCH_BUS_ID) != 0)
1631 && (cur_pattern->bus_id != bus->sim->bus_id))
1634 if (((cur_pattern->flags & BUS_MATCH_UNIT) != 0)
1635 && (cur_pattern->unit_number != bus->sim->unit_number))
1638 if (((cur_pattern->flags & BUS_MATCH_NAME) != 0)
1639 && (strncmp(cur_pattern->dev_name, bus->sim->sim_name,
1644 * If we get to this point, the user definitely wants
1645 * information on this bus. So tell the caller to copy the
1648 retval |= DM_RET_COPY;
1651 * If the return action has been set to descend, then we
1652 * know that we've already seen a non-bus matching
1653 * expression, therefore we need to further descend the tree.
1654 * This won't change by continuing around the loop, so we
1655 * go ahead and return. If we haven't seen a non-bus
1656 * matching expression, we keep going around the loop until
1657 * we exhaust the matching expressions. We'll set the stop
1658 * flag once we fall out of the loop.
1660 if ((retval & DM_RET_ACTION_MASK) == DM_RET_DESCEND)
1665 * If the return action hasn't been set to descend yet, that means
1666 * we haven't seen anything other than bus matching patterns. So
1667 * tell the caller to stop descending the tree -- the user doesn't
1668 * want to match against lower level tree elements.
1670 if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)
1671 retval |= DM_RET_STOP;
1676 static dev_match_ret
1677 xptdevicematch(struct dev_match_pattern *patterns, int num_patterns,
1678 struct cam_ed *device)
1680 dev_match_ret retval;
1683 retval = DM_RET_NONE;
1686 * If we aren't given something to match against, that's an error.
1689 return(DM_RET_ERROR);
1692 * If there are no match entries, then this device matches no
1695 if ((patterns == NULL) || (patterns == 0))
1696 return(DM_RET_DESCEND | DM_RET_COPY);
1698 for (i = 0; i < num_patterns; i++) {
1699 struct device_match_pattern *cur_pattern;
1702 * If the pattern in question isn't for a device node, we
1703 * aren't interested.
1705 if (patterns[i].type != DEV_MATCH_DEVICE) {
1706 if ((patterns[i].type == DEV_MATCH_PERIPH)
1707 && ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE))
1708 retval |= DM_RET_DESCEND;
1712 cur_pattern = &patterns[i].pattern.device_pattern;
1715 * If they want to match any device node, we give them any
1718 if (cur_pattern->flags == DEV_MATCH_ANY) {
1719 /* set the copy flag */
1720 retval |= DM_RET_COPY;
1724 * If we've already decided on an action, go ahead
1727 if ((retval & DM_RET_ACTION_MASK) != DM_RET_NONE)
1732 * Not sure why someone would do this...
1734 if (cur_pattern->flags == DEV_MATCH_NONE)
1737 if (((cur_pattern->flags & DEV_MATCH_PATH) != 0)
1738 && (cur_pattern->path_id != device->target->bus->path_id))
1741 if (((cur_pattern->flags & DEV_MATCH_TARGET) != 0)
1742 && (cur_pattern->target_id != device->target->target_id))
1745 if (((cur_pattern->flags & DEV_MATCH_LUN) != 0)
1746 && (cur_pattern->target_lun != device->lun_id))
1749 if (((cur_pattern->flags & DEV_MATCH_INQUIRY) != 0)
1750 && (cam_quirkmatch((caddr_t)&device->inq_data,
1751 (caddr_t)&cur_pattern->inq_pat,
1752 1, sizeof(cur_pattern->inq_pat),
1753 scsi_static_inquiry_match) == NULL))
1757 * If we get to this point, the user definitely wants
1758 * information on this device. So tell the caller to copy
1761 retval |= DM_RET_COPY;
1764 * If the return action has been set to descend, then we
1765 * know that we've already seen a peripheral matching
1766 * expression, therefore we need to further descend the tree.
1767 * This won't change by continuing around the loop, so we
1768 * go ahead and return. If we haven't seen a peripheral
1769 * matching expression, we keep going around the loop until
1770 * we exhaust the matching expressions. We'll set the stop
1771 * flag once we fall out of the loop.
1773 if ((retval & DM_RET_ACTION_MASK) == DM_RET_DESCEND)
1778 * If the return action hasn't been set to descend yet, that means
1779 * we haven't seen any peripheral matching patterns. So tell the
1780 * caller to stop descending the tree -- the user doesn't want to
1781 * match against lower level tree elements.
1783 if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)
1784 retval |= DM_RET_STOP;
1790 * Match a single peripheral against any number of match patterns.
1792 static dev_match_ret
1793 xptperiphmatch(struct dev_match_pattern *patterns, int num_patterns,
1794 struct cam_periph *periph)
1796 dev_match_ret retval;
1800 * If we aren't given something to match against, that's an error.
1803 return(DM_RET_ERROR);
1806 * If there are no match entries, then this peripheral matches no
1809 if ((patterns == NULL) || (num_patterns == 0))
1810 return(DM_RET_STOP | DM_RET_COPY);
1813 * There aren't any nodes below a peripheral node, so there's no
1814 * reason to descend the tree any further.
1816 retval = DM_RET_STOP;
1818 for (i = 0; i < num_patterns; i++) {
1819 struct periph_match_pattern *cur_pattern;
1822 * If the pattern in question isn't for a peripheral, we
1823 * aren't interested.
1825 if (patterns[i].type != DEV_MATCH_PERIPH)
1828 cur_pattern = &patterns[i].pattern.periph_pattern;
1831 * If they want to match on anything, then we will do so.
1833 if (cur_pattern->flags == PERIPH_MATCH_ANY) {
1834 /* set the copy flag */
1835 retval |= DM_RET_COPY;
1838 * We've already set the return action to stop,
1839 * since there are no nodes below peripherals in
1846 * Not sure why someone would do this...
1848 if (cur_pattern->flags == PERIPH_MATCH_NONE)
1851 if (((cur_pattern->flags & PERIPH_MATCH_PATH) != 0)
1852 && (cur_pattern->path_id != periph->path->bus->path_id))
1856 * For the target and lun id's, we have to make sure the
1857 * target and lun pointers aren't NULL. The xpt peripheral
1858 * has a wildcard target and device.
1860 if (((cur_pattern->flags & PERIPH_MATCH_TARGET) != 0)
1861 && ((periph->path->target == NULL)
1862 ||(cur_pattern->target_id != periph->path->target->target_id)))
1865 if (((cur_pattern->flags & PERIPH_MATCH_LUN) != 0)
1866 && ((periph->path->device == NULL)
1867 || (cur_pattern->target_lun != periph->path->device->lun_id)))
1870 if (((cur_pattern->flags & PERIPH_MATCH_UNIT) != 0)
1871 && (cur_pattern->unit_number != periph->unit_number))
1874 if (((cur_pattern->flags & PERIPH_MATCH_NAME) != 0)
1875 && (strncmp(cur_pattern->periph_name, periph->periph_name,
1880 * If we get to this point, the user definitely wants
1881 * information on this peripheral. So tell the caller to
1882 * copy the data out.
1884 retval |= DM_RET_COPY;
1887 * The return action has already been set to stop, since
1888 * peripherals don't have any nodes below them in the EDT.
1894 * If we get to this point, the peripheral that was passed in
1895 * doesn't match any of the patterns.
1901 xptedtbusfunc(struct cam_eb *bus, void *arg)
1903 struct ccb_dev_match *cdm;
1904 dev_match_ret retval;
1906 cdm = (struct ccb_dev_match *)arg;
1909 * If our position is for something deeper in the tree, that means
1910 * that we've already seen this node. So, we keep going down.
1912 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
1913 && (cdm->pos.cookie.bus == bus)
1914 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
1915 && (cdm->pos.cookie.target != NULL))
1916 retval = DM_RET_DESCEND;
1918 retval = xptbusmatch(cdm->patterns, cdm->num_patterns, bus);
1921 * If we got an error, bail out of the search.
1923 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
1924 cdm->status = CAM_DEV_MATCH_ERROR;
1929 * If the copy flag is set, copy this bus out.
1931 if (retval & DM_RET_COPY) {
1934 spaceleft = cdm->match_buf_len - (cdm->num_matches *
1935 sizeof(struct dev_match_result));
1938 * If we don't have enough space to put in another
1939 * match result, save our position and tell the
1940 * user there are more devices to check.
1942 if (spaceleft < sizeof(struct dev_match_result)) {
1943 bzero(&cdm->pos, sizeof(cdm->pos));
1944 cdm->pos.position_type =
1945 CAM_DEV_POS_EDT | CAM_DEV_POS_BUS;
1947 cdm->pos.cookie.bus = bus;
1948 cdm->pos.generations[CAM_BUS_GENERATION]=
1950 cdm->status = CAM_DEV_MATCH_MORE;
1953 j = cdm->num_matches;
1955 cdm->matches[j].type = DEV_MATCH_BUS;
1956 cdm->matches[j].result.bus_result.path_id = bus->path_id;
1957 cdm->matches[j].result.bus_result.bus_id = bus->sim->bus_id;
1958 cdm->matches[j].result.bus_result.unit_number =
1959 bus->sim->unit_number;
1960 strncpy(cdm->matches[j].result.bus_result.dev_name,
1961 bus->sim->sim_name, DEV_IDLEN);
1965 * If the user is only interested in busses, there's no
1966 * reason to descend to the next level in the tree.
1968 if ((retval & DM_RET_ACTION_MASK) == DM_RET_STOP)
1972 * If there is a target generation recorded, check it to
1973 * make sure the target list hasn't changed.
1975 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
1976 && (bus == cdm->pos.cookie.bus)
1977 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
1978 && (cdm->pos.generations[CAM_TARGET_GENERATION] != 0)
1979 && (cdm->pos.generations[CAM_TARGET_GENERATION] !=
1981 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
1985 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
1986 && (cdm->pos.cookie.bus == bus)
1987 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
1988 && (cdm->pos.cookie.target != NULL))
1989 return(xpttargettraverse(bus,
1990 (struct cam_et *)cdm->pos.cookie.target,
1991 xptedttargetfunc, arg));
1993 return(xpttargettraverse(bus, NULL, xptedttargetfunc, arg));
1997 xptedttargetfunc(struct cam_et *target, void *arg)
1999 struct ccb_dev_match *cdm;
2001 cdm = (struct ccb_dev_match *)arg;
2004 * If there is a device list generation recorded, check it to
2005 * make sure the device list hasn't changed.
2007 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2008 && (cdm->pos.cookie.bus == target->bus)
2009 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2010 && (cdm->pos.cookie.target == target)
2011 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2012 && (cdm->pos.generations[CAM_DEV_GENERATION] != 0)
2013 && (cdm->pos.generations[CAM_DEV_GENERATION] !=
2014 target->generation)) {
2015 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2019 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2020 && (cdm->pos.cookie.bus == target->bus)
2021 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2022 && (cdm->pos.cookie.target == target)
2023 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2024 && (cdm->pos.cookie.device != NULL))
2025 return(xptdevicetraverse(target,
2026 (struct cam_ed *)cdm->pos.cookie.device,
2027 xptedtdevicefunc, arg));
2029 return(xptdevicetraverse(target, NULL, xptedtdevicefunc, arg));
2033 xptedtdevicefunc(struct cam_ed *device, void *arg)
2036 struct ccb_dev_match *cdm;
2037 dev_match_ret retval;
2039 cdm = (struct ccb_dev_match *)arg;
2042 * If our position is for something deeper in the tree, that means
2043 * that we've already seen this node. So, we keep going down.
2045 if ((cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2046 && (cdm->pos.cookie.device == device)
2047 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2048 && (cdm->pos.cookie.periph != NULL))
2049 retval = DM_RET_DESCEND;
2051 retval = xptdevicematch(cdm->patterns, cdm->num_patterns,
2054 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
2055 cdm->status = CAM_DEV_MATCH_ERROR;
2060 * If the copy flag is set, copy this device out.
2062 if (retval & DM_RET_COPY) {
2065 spaceleft = cdm->match_buf_len - (cdm->num_matches *
2066 sizeof(struct dev_match_result));
2069 * If we don't have enough space to put in another
2070 * match result, save our position and tell the
2071 * user there are more devices to check.
2073 if (spaceleft < sizeof(struct dev_match_result)) {
2074 bzero(&cdm->pos, sizeof(cdm->pos));
2075 cdm->pos.position_type =
2076 CAM_DEV_POS_EDT | CAM_DEV_POS_BUS |
2077 CAM_DEV_POS_TARGET | CAM_DEV_POS_DEVICE;
2079 cdm->pos.cookie.bus = device->target->bus;
2080 cdm->pos.generations[CAM_BUS_GENERATION]=
2082 cdm->pos.cookie.target = device->target;
2083 cdm->pos.generations[CAM_TARGET_GENERATION] =
2084 device->target->bus->generation;
2085 cdm->pos.cookie.device = device;
2086 cdm->pos.generations[CAM_DEV_GENERATION] =
2087 device->target->generation;
2088 cdm->status = CAM_DEV_MATCH_MORE;
2091 j = cdm->num_matches;
2093 cdm->matches[j].type = DEV_MATCH_DEVICE;
2094 cdm->matches[j].result.device_result.path_id =
2095 device->target->bus->path_id;
2096 cdm->matches[j].result.device_result.target_id =
2097 device->target->target_id;
2098 cdm->matches[j].result.device_result.target_lun =
2100 bcopy(&device->inq_data,
2101 &cdm->matches[j].result.device_result.inq_data,
2102 sizeof(struct scsi_inquiry_data));
2104 /* Let the user know whether this device is unconfigured */
2105 if (device->flags & CAM_DEV_UNCONFIGURED)
2106 cdm->matches[j].result.device_result.flags =
2107 DEV_RESULT_UNCONFIGURED;
2109 cdm->matches[j].result.device_result.flags =
2114 * If the user isn't interested in peripherals, don't descend
2115 * the tree any further.
2117 if ((retval & DM_RET_ACTION_MASK) == DM_RET_STOP)
2121 * If there is a peripheral list generation recorded, make sure
2122 * it hasn't changed.
2124 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2125 && (device->target->bus == cdm->pos.cookie.bus)
2126 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2127 && (device->target == cdm->pos.cookie.target)
2128 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2129 && (device == cdm->pos.cookie.device)
2130 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2131 && (cdm->pos.generations[CAM_PERIPH_GENERATION] != 0)
2132 && (cdm->pos.generations[CAM_PERIPH_GENERATION] !=
2133 device->generation)){
2134 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2138 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2139 && (cdm->pos.cookie.bus == device->target->bus)
2140 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2141 && (cdm->pos.cookie.target == device->target)
2142 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2143 && (cdm->pos.cookie.device == device)
2144 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2145 && (cdm->pos.cookie.periph != NULL))
2146 return(xptperiphtraverse(device,
2147 (struct cam_periph *)cdm->pos.cookie.periph,
2148 xptedtperiphfunc, arg));
2150 return(xptperiphtraverse(device, NULL, xptedtperiphfunc, arg));
2154 xptedtperiphfunc(struct cam_periph *periph, void *arg)
2156 struct ccb_dev_match *cdm;
2157 dev_match_ret retval;
2159 cdm = (struct ccb_dev_match *)arg;
2161 retval = xptperiphmatch(cdm->patterns, cdm->num_patterns, periph);
2163 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
2164 cdm->status = CAM_DEV_MATCH_ERROR;
2169 * If the copy flag is set, copy this peripheral out.
2171 if (retval & DM_RET_COPY) {
2174 spaceleft = cdm->match_buf_len - (cdm->num_matches *
2175 sizeof(struct dev_match_result));
2178 * If we don't have enough space to put in another
2179 * match result, save our position and tell the
2180 * user there are more devices to check.
2182 if (spaceleft < sizeof(struct dev_match_result)) {
2183 bzero(&cdm->pos, sizeof(cdm->pos));
2184 cdm->pos.position_type =
2185 CAM_DEV_POS_EDT | CAM_DEV_POS_BUS |
2186 CAM_DEV_POS_TARGET | CAM_DEV_POS_DEVICE |
2189 cdm->pos.cookie.bus = periph->path->bus;
2190 cdm->pos.generations[CAM_BUS_GENERATION]=
2192 cdm->pos.cookie.target = periph->path->target;
2193 cdm->pos.generations[CAM_TARGET_GENERATION] =
2194 periph->path->bus->generation;
2195 cdm->pos.cookie.device = periph->path->device;
2196 cdm->pos.generations[CAM_DEV_GENERATION] =
2197 periph->path->target->generation;
2198 cdm->pos.cookie.periph = periph;
2199 cdm->pos.generations[CAM_PERIPH_GENERATION] =
2200 periph->path->device->generation;
2201 cdm->status = CAM_DEV_MATCH_MORE;
2205 j = cdm->num_matches;
2207 cdm->matches[j].type = DEV_MATCH_PERIPH;
2208 cdm->matches[j].result.periph_result.path_id =
2209 periph->path->bus->path_id;
2210 cdm->matches[j].result.periph_result.target_id =
2211 periph->path->target->target_id;
2212 cdm->matches[j].result.periph_result.target_lun =
2213 periph->path->device->lun_id;
2214 cdm->matches[j].result.periph_result.unit_number =
2215 periph->unit_number;
2216 strncpy(cdm->matches[j].result.periph_result.periph_name,
2217 periph->periph_name, DEV_IDLEN);
2224 xptedtmatch(struct ccb_dev_match *cdm)
2228 cdm->num_matches = 0;
2231 * Check the bus list generation. If it has changed, the user
2232 * needs to reset everything and start over.
2234 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2235 && (cdm->pos.generations[CAM_BUS_GENERATION] != 0)
2236 && (cdm->pos.generations[CAM_BUS_GENERATION] != bus_generation)) {
2237 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2241 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2242 && (cdm->pos.cookie.bus != NULL))
2243 ret = xptbustraverse((struct cam_eb *)cdm->pos.cookie.bus,
2244 xptedtbusfunc, cdm);
2246 ret = xptbustraverse(NULL, xptedtbusfunc, cdm);
2249 * If we get back 0, that means that we had to stop before fully
2250 * traversing the EDT. It also means that one of the subroutines
2251 * has set the status field to the proper value. If we get back 1,
2252 * we've fully traversed the EDT and copied out any matching entries.
2255 cdm->status = CAM_DEV_MATCH_LAST;
2261 xptplistpdrvfunc(struct periph_driver **pdrv, void *arg)
2263 struct ccb_dev_match *cdm;
2265 cdm = (struct ccb_dev_match *)arg;
2267 if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR)
2268 && (cdm->pos.cookie.pdrv == pdrv)
2269 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2270 && (cdm->pos.generations[CAM_PERIPH_GENERATION] != 0)
2271 && (cdm->pos.generations[CAM_PERIPH_GENERATION] !=
2272 (*pdrv)->generation)) {
2273 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2277 if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR)
2278 && (cdm->pos.cookie.pdrv == pdrv)
2279 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2280 && (cdm->pos.cookie.periph != NULL))
2281 return(xptpdperiphtraverse(pdrv,
2282 (struct cam_periph *)cdm->pos.cookie.periph,
2283 xptplistperiphfunc, arg));
2285 return(xptpdperiphtraverse(pdrv, NULL,xptplistperiphfunc, arg));
2289 xptplistperiphfunc(struct cam_periph *periph, void *arg)
2291 struct ccb_dev_match *cdm;
2292 dev_match_ret retval;
2294 cdm = (struct ccb_dev_match *)arg;
2296 retval = xptperiphmatch(cdm->patterns, cdm->num_patterns, periph);
2298 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
2299 cdm->status = CAM_DEV_MATCH_ERROR;
2304 * If the copy flag is set, copy this peripheral out.
2306 if (retval & DM_RET_COPY) {
2309 spaceleft = cdm->match_buf_len - (cdm->num_matches *
2310 sizeof(struct dev_match_result));
2313 * If we don't have enough space to put in another
2314 * match result, save our position and tell the
2315 * user there are more devices to check.
2317 if (spaceleft < sizeof(struct dev_match_result)) {
2318 struct periph_driver **pdrv;
2321 bzero(&cdm->pos, sizeof(cdm->pos));
2322 cdm->pos.position_type =
2323 CAM_DEV_POS_PDRV | CAM_DEV_POS_PDPTR |
2327 * This may look a bit non-sensical, but it is
2328 * actually quite logical. There are very few
2329 * peripheral drivers, and bloating every peripheral
2330 * structure with a pointer back to its parent
2331 * peripheral driver linker set entry would cost
2332 * more in the long run than doing this quick lookup.
2335 (struct periph_driver **)periphdriver_set.ls_items;
2336 *pdrv != NULL; pdrv++) {
2337 if (strcmp((*pdrv)->driver_name,
2338 periph->periph_name) == 0)
2343 cdm->status = CAM_DEV_MATCH_ERROR;
2347 cdm->pos.cookie.pdrv = pdrv;
2349 * The periph generation slot does double duty, as
2350 * does the periph pointer slot. They are used for
2351 * both edt and pdrv lookups and positioning.
2353 cdm->pos.cookie.periph = periph;
2354 cdm->pos.generations[CAM_PERIPH_GENERATION] =
2355 (*pdrv)->generation;
2356 cdm->status = CAM_DEV_MATCH_MORE;
2360 j = cdm->num_matches;
2362 cdm->matches[j].type = DEV_MATCH_PERIPH;
2363 cdm->matches[j].result.periph_result.path_id =
2364 periph->path->bus->path_id;
2367 * The transport layer peripheral doesn't have a target or
2370 if (periph->path->target)
2371 cdm->matches[j].result.periph_result.target_id =
2372 periph->path->target->target_id;
2374 cdm->matches[j].result.periph_result.target_id = -1;
2376 if (periph->path->device)
2377 cdm->matches[j].result.periph_result.target_lun =
2378 periph->path->device->lun_id;
2380 cdm->matches[j].result.periph_result.target_lun = -1;
2382 cdm->matches[j].result.periph_result.unit_number =
2383 periph->unit_number;
2384 strncpy(cdm->matches[j].result.periph_result.periph_name,
2385 periph->periph_name, DEV_IDLEN);
2392 xptperiphlistmatch(struct ccb_dev_match *cdm)
2396 cdm->num_matches = 0;
2399 * At this point in the edt traversal function, we check the bus
2400 * list generation to make sure that no busses have been added or
2401 * removed since the user last sent a XPT_DEV_MATCH ccb through.
2402 * For the peripheral driver list traversal function, however, we
2403 * don't have to worry about new peripheral driver types coming or
2404 * going; they're in a linker set, and therefore can't change
2405 * without a recompile.
2408 if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR)
2409 && (cdm->pos.cookie.pdrv != NULL))
2410 ret = xptpdrvtraverse(
2411 (struct periph_driver **)cdm->pos.cookie.pdrv,
2412 xptplistpdrvfunc, cdm);
2414 ret = xptpdrvtraverse(NULL, xptplistpdrvfunc, cdm);
2417 * If we get back 0, that means that we had to stop before fully
2418 * traversing the peripheral driver tree. It also means that one of
2419 * the subroutines has set the status field to the proper value. If
2420 * we get back 1, we've fully traversed the EDT and copied out any
2424 cdm->status = CAM_DEV_MATCH_LAST;
2430 xptbustraverse(struct cam_eb *start_bus, xpt_busfunc_t *tr_func, void *arg)
2432 struct cam_eb *bus, *next_bus;
2437 for (bus = (start_bus ? start_bus : TAILQ_FIRST(&xpt_busses));
2440 next_bus = TAILQ_NEXT(bus, links);
2442 retval = tr_func(bus, arg);
2451 xpttargettraverse(struct cam_eb *bus, struct cam_et *start_target,
2452 xpt_targetfunc_t *tr_func, void *arg)
2454 struct cam_et *target, *next_target;
2458 for (target = (start_target ? start_target :
2459 TAILQ_FIRST(&bus->et_entries));
2460 target != NULL; target = next_target) {
2462 next_target = TAILQ_NEXT(target, links);
2464 retval = tr_func(target, arg);
2474 xptdevicetraverse(struct cam_et *target, struct cam_ed *start_device,
2475 xpt_devicefunc_t *tr_func, void *arg)
2477 struct cam_ed *device, *next_device;
2481 for (device = (start_device ? start_device :
2482 TAILQ_FIRST(&target->ed_entries));
2484 device = next_device) {
2486 next_device = TAILQ_NEXT(device, links);
2488 retval = tr_func(device, arg);
2498 xptperiphtraverse(struct cam_ed *device, struct cam_periph *start_periph,
2499 xpt_periphfunc_t *tr_func, void *arg)
2501 struct cam_periph *periph, *next_periph;
2506 for (periph = (start_periph ? start_periph :
2507 SLIST_FIRST(&device->periphs));
2509 periph = next_periph) {
2511 next_periph = SLIST_NEXT(periph, periph_links);
2513 retval = tr_func(periph, arg);
2522 xptpdrvtraverse(struct periph_driver **start_pdrv,
2523 xpt_pdrvfunc_t *tr_func, void *arg)
2525 struct periph_driver **pdrv;
2531 * We don't traverse the peripheral driver list like we do the
2532 * other lists, because it is a linker set, and therefore cannot be
2533 * changed during runtime. If the peripheral driver list is ever
2534 * re-done to be something other than a linker set (i.e. it can
2535 * change while the system is running), the list traversal should
2536 * be modified to work like the other traversal functions.
2538 for (pdrv = (start_pdrv ? start_pdrv :
2539 (struct periph_driver **)periphdriver_set.ls_items);
2540 *pdrv != NULL; pdrv++) {
2541 retval = tr_func(pdrv, arg);
2551 xptpdperiphtraverse(struct periph_driver **pdrv,
2552 struct cam_periph *start_periph,
2553 xpt_periphfunc_t *tr_func, void *arg)
2555 struct cam_periph *periph, *next_periph;
2560 for (periph = (start_periph ? start_periph :
2561 TAILQ_FIRST(&(*pdrv)->units)); periph != NULL;
2562 periph = next_periph) {
2564 next_periph = TAILQ_NEXT(periph, unit_links);
2566 retval = tr_func(periph, arg);
2574 xptdefbusfunc(struct cam_eb *bus, void *arg)
2576 struct xpt_traverse_config *tr_config;
2578 tr_config = (struct xpt_traverse_config *)arg;
2580 if (tr_config->depth == XPT_DEPTH_BUS) {
2581 xpt_busfunc_t *tr_func;
2583 tr_func = (xpt_busfunc_t *)tr_config->tr_func;
2585 return(tr_func(bus, tr_config->tr_arg));
2587 return(xpttargettraverse(bus, NULL, xptdeftargetfunc, arg));
2591 xptdeftargetfunc(struct cam_et *target, void *arg)
2593 struct xpt_traverse_config *tr_config;
2595 tr_config = (struct xpt_traverse_config *)arg;
2597 if (tr_config->depth == XPT_DEPTH_TARGET) {
2598 xpt_targetfunc_t *tr_func;
2600 tr_func = (xpt_targetfunc_t *)tr_config->tr_func;
2602 return(tr_func(target, tr_config->tr_arg));
2604 return(xptdevicetraverse(target, NULL, xptdefdevicefunc, arg));
2608 xptdefdevicefunc(struct cam_ed *device, void *arg)
2610 struct xpt_traverse_config *tr_config;
2612 tr_config = (struct xpt_traverse_config *)arg;
2614 if (tr_config->depth == XPT_DEPTH_DEVICE) {
2615 xpt_devicefunc_t *tr_func;
2617 tr_func = (xpt_devicefunc_t *)tr_config->tr_func;
2619 return(tr_func(device, tr_config->tr_arg));
2621 return(xptperiphtraverse(device, NULL, xptdefperiphfunc, arg));
2625 xptdefperiphfunc(struct cam_periph *periph, void *arg)
2627 struct xpt_traverse_config *tr_config;
2628 xpt_periphfunc_t *tr_func;
2630 tr_config = (struct xpt_traverse_config *)arg;
2632 tr_func = (xpt_periphfunc_t *)tr_config->tr_func;
2635 * Unlike the other default functions, we don't check for depth
2636 * here. The peripheral driver level is the last level in the EDT,
2637 * so if we're here, we should execute the function in question.
2639 return(tr_func(periph, tr_config->tr_arg));
2643 * Execute the given function for every bus in the EDT.
2646 xpt_for_all_busses(xpt_busfunc_t *tr_func, void *arg)
2648 struct xpt_traverse_config tr_config;
2650 tr_config.depth = XPT_DEPTH_BUS;
2651 tr_config.tr_func = tr_func;
2652 tr_config.tr_arg = arg;
2654 return(xptbustraverse(NULL, xptdefbusfunc, &tr_config));
2659 * Execute the given function for every target in the EDT.
2662 xpt_for_all_targets(xpt_targetfunc_t *tr_func, void *arg)
2664 struct xpt_traverse_config tr_config;
2666 tr_config.depth = XPT_DEPTH_TARGET;
2667 tr_config.tr_func = tr_func;
2668 tr_config.tr_arg = arg;
2670 return(xptbustraverse(NULL, xptdefbusfunc, &tr_config));
2672 #endif /* notusedyet */
2675 * Execute the given function for every device in the EDT.
2678 xpt_for_all_devices(xpt_devicefunc_t *tr_func, void *arg)
2680 struct xpt_traverse_config tr_config;
2682 tr_config.depth = XPT_DEPTH_DEVICE;
2683 tr_config.tr_func = tr_func;
2684 tr_config.tr_arg = arg;
2686 return(xptbustraverse(NULL, xptdefbusfunc, &tr_config));
2691 * Execute the given function for every peripheral in the EDT.
2694 xpt_for_all_periphs(xpt_periphfunc_t *tr_func, void *arg)
2696 struct xpt_traverse_config tr_config;
2698 tr_config.depth = XPT_DEPTH_PERIPH;
2699 tr_config.tr_func = tr_func;
2700 tr_config.tr_arg = arg;
2702 return(xptbustraverse(NULL, xptdefbusfunc, &tr_config));
2704 #endif /* notusedyet */
2707 xptsetasyncfunc(struct cam_ed *device, void *arg)
2709 struct cam_path path;
2710 struct ccb_getdev cgd;
2711 struct async_node *cur_entry;
2713 cur_entry = (struct async_node *)arg;
2716 * Don't report unconfigured devices (Wildcard devs,
2717 * devices only for target mode, device instances
2718 * that have been invalidated but are waiting for
2719 * their last reference count to be released).
2721 if ((device->flags & CAM_DEV_UNCONFIGURED) != 0)
2724 xpt_compile_path(&path,
2726 device->target->bus->path_id,
2727 device->target->target_id,
2729 xpt_setup_ccb(&cgd.ccb_h, &path, /*priority*/1);
2730 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
2731 xpt_action((union ccb *)&cgd);
2732 cur_entry->callback(cur_entry->callback_arg,
2735 xpt_release_path(&path);
2741 xptsetasyncbusfunc(struct cam_eb *bus, void *arg)
2743 struct cam_path path;
2744 struct ccb_pathinq cpi;
2745 struct async_node *cur_entry;
2747 cur_entry = (struct async_node *)arg;
2749 xpt_compile_path(&path, /*periph*/NULL,
2751 CAM_TARGET_WILDCARD,
2753 xpt_setup_ccb(&cpi.ccb_h, &path, /*priority*/1);
2754 cpi.ccb_h.func_code = XPT_PATH_INQ;
2755 xpt_action((union ccb *)&cpi);
2756 cur_entry->callback(cur_entry->callback_arg,
2759 xpt_release_path(&path);
2765 xpt_action(union ccb *start_ccb)
2769 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("xpt_action\n"));
2771 start_ccb->ccb_h.status = CAM_REQ_INPROG;
2773 iopl = splsoftcam();
2774 switch (start_ccb->ccb_h.func_code) {
2778 char cdb_str[(SCSI_MAX_CDBLEN * 3) + 1];
2779 struct cam_path *path;
2781 path = start_ccb->ccb_h.path;
2785 * For the sake of compatibility with SCSI-1
2786 * devices that may not understand the identify
2787 * message, we include lun information in the
2788 * second byte of all commands. SCSI-1 specifies
2789 * that luns are a 3 bit value and reserves only 3
2790 * bits for lun information in the CDB. Later
2791 * revisions of the SCSI spec allow for more than 8
2792 * luns, but have deprecated lun information in the
2793 * CDB. So, if the lun won't fit, we must omit.
2795 * Also be aware that during initial probing for devices,
2796 * the inquiry information is unknown but initialized to 0.
2797 * This means that this code will be exercised while probing
2798 * devices with an ANSI revision greater than 2.
2800 if (SID_ANSI_REV(&start_ccb->ccb_h.path->device->inq_data) <= 2
2801 && start_ccb->ccb_h.target_lun < 8
2802 && (start_ccb->ccb_h.flags & CAM_CDB_POINTER) == 0) {
2804 start_ccb->csio.cdb_io.cdb_bytes[1] |=
2805 start_ccb->ccb_h.target_lun << 5;
2807 start_ccb->csio.scsi_status = SCSI_STATUS_OK;
2808 CAM_DEBUG(path, CAM_DEBUG_CDB,("%s. CDB: %s\n",
2809 scsi_op_desc(start_ccb->csio.cdb_io.cdb_bytes[0],
2810 &path->device->inq_data),
2811 scsi_cdb_string(start_ccb->csio.cdb_io.cdb_bytes,
2812 cdb_str, sizeof(cdb_str))));
2816 case XPT_CONT_TARGET_IO:
2817 start_ccb->csio.sense_resid = 0;
2818 start_ccb->csio.resid = 0;
2823 struct cam_path *path;
2827 path = start_ccb->ccb_h.path;
2830 cam_ccbq_insert_ccb(&path->device->ccbq, start_ccb);
2831 if (path->device->qfrozen_cnt == 0)
2832 runq = xpt_schedule_dev_sendq(path->bus, path->device);
2837 xpt_run_dev_sendq(path->bus);
2840 case XPT_SET_TRAN_SETTINGS:
2842 xpt_set_transfer_settings(&start_ccb->cts,
2843 start_ccb->ccb_h.path->device,
2844 /*async_update*/FALSE);
2847 case XPT_CALC_GEOMETRY:
2849 struct cam_sim *sim;
2851 /* Filter out garbage */
2852 if (start_ccb->ccg.block_size == 0
2853 || start_ccb->ccg.volume_size == 0) {
2854 start_ccb->ccg.cylinders = 0;
2855 start_ccb->ccg.heads = 0;
2856 start_ccb->ccg.secs_per_track = 0;
2857 start_ccb->ccb_h.status = CAM_REQ_CMP;
2862 * In a PC-98 system, geometry translation depens on
2863 * the "real" device geometry obtained from mode page 4.
2864 * SCSI geometry translation is performed in the
2865 * initialization routine of the SCSI BIOS and the result
2866 * stored in host memory. If the translation is available
2867 * in host memory, use it. If not, rely on the default
2868 * translation the device driver performs.
2870 if (scsi_da_bios_params(&start_ccb->ccg) != 0) {
2871 start_ccb->ccb_h.status = CAM_REQ_CMP;
2875 sim = start_ccb->ccb_h.path->bus->sim;
2876 (*(sim->sim_action))(sim, start_ccb);
2881 union ccb* abort_ccb;
2884 abort_ccb = start_ccb->cab.abort_ccb;
2885 if (XPT_FC_IS_DEV_QUEUED(abort_ccb)) {
2887 if (abort_ccb->ccb_h.pinfo.index >= 0) {
2888 struct cam_ccbq *ccbq;
2890 ccbq = &abort_ccb->ccb_h.path->device->ccbq;
2891 cam_ccbq_remove_ccb(ccbq, abort_ccb);
2892 abort_ccb->ccb_h.status =
2893 CAM_REQ_ABORTED|CAM_DEV_QFRZN;
2894 xpt_freeze_devq(abort_ccb->ccb_h.path, 1);
2896 xpt_done(abort_ccb);
2898 start_ccb->ccb_h.status = CAM_REQ_CMP;
2901 if (abort_ccb->ccb_h.pinfo.index == CAM_UNQUEUED_INDEX
2902 && (abort_ccb->ccb_h.status & CAM_SIM_QUEUED) == 0) {
2904 * We've caught this ccb en route to
2905 * the SIM. Flag it for abort and the
2906 * SIM will do so just before starting
2907 * real work on the CCB.
2909 abort_ccb->ccb_h.status =
2910 CAM_REQ_ABORTED|CAM_DEV_QFRZN;
2911 xpt_freeze_devq(abort_ccb->ccb_h.path, 1);
2912 start_ccb->ccb_h.status = CAM_REQ_CMP;
2916 if (XPT_FC_IS_QUEUED(abort_ccb)
2917 && (abort_ccb->ccb_h.pinfo.index == CAM_DONEQ_INDEX)) {
2919 * It's already completed but waiting
2920 * for our SWI to get to it.
2922 start_ccb->ccb_h.status = CAM_UA_ABORT;
2926 * If we weren't able to take care of the abort request
2927 * in the XPT, pass the request down to the SIM for processing.
2931 case XPT_ACCEPT_TARGET_IO:
2933 case XPT_IMMED_NOTIFY:
2934 case XPT_NOTIFY_ACK:
2935 case XPT_GET_TRAN_SETTINGS:
2938 struct cam_sim *sim;
2940 sim = start_ccb->ccb_h.path->bus->sim;
2941 (*(sim->sim_action))(sim, start_ccb);
2946 struct cam_sim *sim;
2948 sim = start_ccb->ccb_h.path->bus->sim;
2949 (*(sim->sim_action))(sim, start_ccb);
2952 case XPT_PATH_STATS:
2953 start_ccb->cpis.last_reset =
2954 start_ccb->ccb_h.path->bus->last_reset;
2955 start_ccb->ccb_h.status = CAM_REQ_CMP;
2962 dev = start_ccb->ccb_h.path->device;
2964 if ((dev->flags & CAM_DEV_UNCONFIGURED) != 0) {
2965 start_ccb->ccb_h.status = CAM_DEV_NOT_THERE;
2967 struct ccb_getdev *cgd;
2971 cgd = &start_ccb->cgd;
2972 bus = cgd->ccb_h.path->bus;
2973 tar = cgd->ccb_h.path->target;
2974 cgd->inq_data = dev->inq_data;
2975 cgd->ccb_h.status = CAM_REQ_CMP;
2976 cgd->serial_num_len = dev->serial_num_len;
2977 if ((dev->serial_num_len > 0)
2978 && (dev->serial_num != NULL))
2979 bcopy(dev->serial_num, cgd->serial_num,
2980 dev->serial_num_len);
2985 case XPT_GDEV_STATS:
2990 dev = start_ccb->ccb_h.path->device;
2992 if ((dev->flags & CAM_DEV_UNCONFIGURED) != 0) {
2993 start_ccb->ccb_h.status = CAM_DEV_NOT_THERE;
2995 struct ccb_getdevstats *cgds;
2999 cgds = &start_ccb->cgds;
3000 bus = cgds->ccb_h.path->bus;
3001 tar = cgds->ccb_h.path->target;
3002 cgds->dev_openings = dev->ccbq.dev_openings;
3003 cgds->dev_active = dev->ccbq.dev_active;
3004 cgds->devq_openings = dev->ccbq.devq_openings;
3005 cgds->devq_queued = dev->ccbq.queue.entries;
3006 cgds->held = dev->ccbq.held;
3007 cgds->last_reset = tar->last_reset;
3008 cgds->maxtags = dev->quirk->maxtags;
3009 cgds->mintags = dev->quirk->mintags;
3010 if (timevalcmp(&tar->last_reset, &bus->last_reset, <))
3011 cgds->last_reset = bus->last_reset;
3012 cgds->ccb_h.status = CAM_REQ_CMP;
3019 struct cam_periph *nperiph;
3020 struct periph_list *periph_head;
3021 struct ccb_getdevlist *cgdl;
3024 struct cam_ed *device;
3031 * Don't want anyone mucking with our data.
3034 device = start_ccb->ccb_h.path->device;
3035 periph_head = &device->periphs;
3036 cgdl = &start_ccb->cgdl;
3039 * Check and see if the list has changed since the user
3040 * last requested a list member. If so, tell them that the
3041 * list has changed, and therefore they need to start over
3042 * from the beginning.
3044 if ((cgdl->index != 0) &&
3045 (cgdl->generation != device->generation)) {
3046 cgdl->status = CAM_GDEVLIST_LIST_CHANGED;
3052 * Traverse the list of peripherals and attempt to find
3053 * the requested peripheral.
3055 for (nperiph = periph_head->slh_first, i = 0;
3056 (nperiph != NULL) && (i <= cgdl->index);
3057 nperiph = nperiph->periph_links.sle_next, i++) {
3058 if (i == cgdl->index) {
3059 strncpy(cgdl->periph_name,
3060 nperiph->periph_name,
3062 cgdl->unit_number = nperiph->unit_number;
3067 cgdl->status = CAM_GDEVLIST_ERROR;
3072 if (nperiph == NULL)
3073 cgdl->status = CAM_GDEVLIST_LAST_DEVICE;
3075 cgdl->status = CAM_GDEVLIST_MORE_DEVS;
3078 cgdl->generation = device->generation;
3081 cgdl->ccb_h.status = CAM_REQ_CMP;
3087 dev_pos_type position_type;
3088 struct ccb_dev_match *cdm;
3091 cdm = &start_ccb->cdm;
3094 * Prevent EDT changes while we traverse it.
3098 * There are two ways of getting at information in the EDT.
3099 * The first way is via the primary EDT tree. It starts
3100 * with a list of busses, then a list of targets on a bus,
3101 * then devices/luns on a target, and then peripherals on a
3102 * device/lun. The "other" way is by the peripheral driver
3103 * lists. The peripheral driver lists are organized by
3104 * peripheral driver. (obviously) So it makes sense to
3105 * use the peripheral driver list if the user is looking
3106 * for something like "da1", or all "da" devices. If the
3107 * user is looking for something on a particular bus/target
3108 * or lun, it's generally better to go through the EDT tree.
3111 if (cdm->pos.position_type != CAM_DEV_POS_NONE)
3112 position_type = cdm->pos.position_type;
3116 position_type = CAM_DEV_POS_NONE;
3118 for (i = 0; i < cdm->num_patterns; i++) {
3119 if ((cdm->patterns[i].type == DEV_MATCH_BUS)
3120 ||(cdm->patterns[i].type == DEV_MATCH_DEVICE)){
3121 position_type = CAM_DEV_POS_EDT;
3126 if (cdm->num_patterns == 0)
3127 position_type = CAM_DEV_POS_EDT;
3128 else if (position_type == CAM_DEV_POS_NONE)
3129 position_type = CAM_DEV_POS_PDRV;
3132 switch(position_type & CAM_DEV_POS_TYPEMASK) {
3133 case CAM_DEV_POS_EDT:
3134 ret = xptedtmatch(cdm);
3136 case CAM_DEV_POS_PDRV:
3137 ret = xptperiphlistmatch(cdm);
3140 cdm->status = CAM_DEV_MATCH_ERROR;
3146 if (cdm->status == CAM_DEV_MATCH_ERROR)
3147 start_ccb->ccb_h.status = CAM_REQ_CMP_ERR;
3149 start_ccb->ccb_h.status = CAM_REQ_CMP;
3155 struct ccb_setasync *csa;
3156 struct async_node *cur_entry;
3157 struct async_list *async_head;
3161 csa = &start_ccb->csa;
3162 added = csa->event_enable;
3163 async_head = &csa->ccb_h.path->device->asyncs;
3166 * If there is already an entry for us, simply
3170 cur_entry = SLIST_FIRST(async_head);
3171 while (cur_entry != NULL) {
3172 if ((cur_entry->callback_arg == csa->callback_arg)
3173 && (cur_entry->callback == csa->callback))
3175 cur_entry = SLIST_NEXT(cur_entry, links);
3178 if (cur_entry != NULL) {
3180 * If the request has no flags set,
3183 added &= ~cur_entry->event_enable;
3184 if (csa->event_enable == 0) {
3185 SLIST_REMOVE(async_head, cur_entry,
3187 csa->ccb_h.path->device->refcount--;
3188 free(cur_entry, M_DEVBUF);
3190 cur_entry->event_enable = csa->event_enable;
3193 cur_entry = malloc(sizeof(*cur_entry), M_DEVBUF,
3195 if (cur_entry == NULL) {
3197 csa->ccb_h.status = CAM_RESRC_UNAVAIL;
3200 cur_entry->event_enable = csa->event_enable;
3201 cur_entry->callback_arg = csa->callback_arg;
3202 cur_entry->callback = csa->callback;
3203 SLIST_INSERT_HEAD(async_head, cur_entry, links);
3204 csa->ccb_h.path->device->refcount++;
3207 if ((added & AC_FOUND_DEVICE) != 0) {
3209 * Get this peripheral up to date with all
3210 * the currently existing devices.
3212 xpt_for_all_devices(xptsetasyncfunc, cur_entry);
3214 if ((added & AC_PATH_REGISTERED) != 0) {
3216 * Get this peripheral up to date with all
3217 * the currently existing busses.
3219 xpt_for_all_busses(xptsetasyncbusfunc, cur_entry);
3222 start_ccb->ccb_h.status = CAM_REQ_CMP;
3227 struct ccb_relsim *crs;
3231 crs = &start_ccb->crs;
3232 dev = crs->ccb_h.path->device;
3235 crs->ccb_h.status = CAM_DEV_NOT_THERE;
3241 if ((crs->release_flags & RELSIM_ADJUST_OPENINGS) != 0) {
3243 if ((dev->inq_data.flags & SID_CmdQue) != 0) {
3245 /* Don't ever go below one opening */
3246 if (crs->openings > 0) {
3247 xpt_dev_ccbq_resize(crs->ccb_h.path,
3251 xpt_print_path(crs->ccb_h.path);
3252 printf("tagged openings "
3260 if ((crs->release_flags & RELSIM_RELEASE_AFTER_TIMEOUT) != 0) {
3262 if ((dev->flags & CAM_DEV_REL_TIMEOUT_PENDING) != 0) {
3265 * Just extend the old timeout and decrement
3266 * the freeze count so that a single timeout
3267 * is sufficient for releasing the queue.
3269 start_ccb->ccb_h.flags &= ~CAM_DEV_QFREEZE;
3270 untimeout(xpt_release_devq_timeout,
3271 dev, dev->c_handle);
3274 start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
3278 timeout(xpt_release_devq_timeout,
3280 (crs->release_timeout * hz) / 1000);
3282 dev->flags |= CAM_DEV_REL_TIMEOUT_PENDING;
3286 if ((crs->release_flags & RELSIM_RELEASE_AFTER_CMDCMPLT) != 0) {
3288 if ((dev->flags & CAM_DEV_REL_ON_COMPLETE) != 0) {
3290 * Decrement the freeze count so that a single
3291 * completion is still sufficient to unfreeze
3294 start_ccb->ccb_h.flags &= ~CAM_DEV_QFREEZE;
3297 dev->flags |= CAM_DEV_REL_ON_COMPLETE;
3298 start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
3302 if ((crs->release_flags & RELSIM_RELEASE_AFTER_QEMPTY) != 0) {
3304 if ((dev->flags & CAM_DEV_REL_ON_QUEUE_EMPTY) != 0
3305 || (dev->ccbq.dev_active == 0)) {
3307 start_ccb->ccb_h.flags &= ~CAM_DEV_QFREEZE;
3310 dev->flags |= CAM_DEV_REL_ON_QUEUE_EMPTY;
3311 start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
3316 if ((start_ccb->ccb_h.flags & CAM_DEV_QFREEZE) == 0) {
3318 xpt_release_devq(crs->ccb_h.path, /*count*/1,
3321 start_ccb->crs.qfrozen_cnt = dev->qfrozen_cnt;
3322 start_ccb->ccb_h.status = CAM_REQ_CMP;
3326 xpt_scan_bus(start_ccb->ccb_h.path->periph, start_ccb);
3329 xpt_scan_lun(start_ccb->ccb_h.path->periph,
3330 start_ccb->ccb_h.path, start_ccb->crcn.flags,
3338 #ifdef CAM_DEBUG_DELAY
3339 cam_debug_delay = CAM_DEBUG_DELAY;
3341 cam_dflags = start_ccb->cdbg.flags;
3342 if (cam_dpath != NULL) {
3343 xpt_free_path(cam_dpath);
3347 if (cam_dflags != CAM_DEBUG_NONE) {
3348 if (xpt_create_path(&cam_dpath, xpt_periph,
3349 start_ccb->ccb_h.path_id,
3350 start_ccb->ccb_h.target_id,
3351 start_ccb->ccb_h.target_lun) !=
3353 start_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
3354 cam_dflags = CAM_DEBUG_NONE;
3356 start_ccb->ccb_h.status = CAM_REQ_CMP;
3357 xpt_print_path(cam_dpath);
3358 printf("debugging flags now %x\n", cam_dflags);
3362 start_ccb->ccb_h.status = CAM_REQ_CMP;
3365 #else /* !CAMDEBUG */
3366 start_ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
3367 #endif /* CAMDEBUG */
3371 if ((start_ccb->ccb_h.flags & CAM_DEV_QFREEZE) != 0)
3372 xpt_freeze_devq(start_ccb->ccb_h.path, 1);
3373 start_ccb->ccb_h.status = CAM_REQ_CMP;
3380 start_ccb->ccb_h.status = CAM_PROVIDE_FAIL;
3387 xpt_polled_action(union ccb *start_ccb)
3391 struct cam_sim *sim;
3392 struct cam_devq *devq;
3395 timeout = start_ccb->ccb_h.timeout;
3396 sim = start_ccb->ccb_h.path->bus->sim;
3398 dev = start_ccb->ccb_h.path->device;
3403 * Steal an opening so that no other queued requests
3404 * can get it before us while we simulate interrupts.
3406 dev->ccbq.devq_openings--;
3407 dev->ccbq.dev_openings--;
3409 while((devq->send_openings <= 0 || dev->ccbq.dev_openings < 0)
3410 && (--timeout > 0)) {
3412 (*(sim->sim_poll))(sim);
3417 dev->ccbq.devq_openings++;
3418 dev->ccbq.dev_openings++;
3421 xpt_action(start_ccb);
3422 while(--timeout > 0) {
3423 (*(sim->sim_poll))(sim);
3426 if ((start_ccb->ccb_h.status & CAM_STATUS_MASK)
3433 * XXX Is it worth adding a sim_timeout entry
3434 * point so we can attempt recovery? If
3435 * this is only used for dumps, I don't think
3438 start_ccb->ccb_h.status = CAM_CMD_TIMEOUT;
3441 start_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
3447 * Schedule a peripheral driver to receive a ccb when it's
3448 * target device has space for more transactions.
3451 xpt_schedule(struct cam_periph *perph, u_int32_t new_priority)
3453 struct cam_ed *device;
3457 CAM_DEBUG(perph->path, CAM_DEBUG_TRACE, ("xpt_schedule\n"));
3458 device = perph->path->device;
3460 if (periph_is_queued(perph)) {
3461 /* Simply reorder based on new priority */
3462 CAM_DEBUG(perph->path, CAM_DEBUG_SUBTRACE,
3463 (" change priority to %d\n", new_priority));
3464 if (new_priority < perph->pinfo.priority) {
3465 camq_change_priority(&device->drvq,
3471 /* New entry on the queue */
3472 CAM_DEBUG(perph->path, CAM_DEBUG_SUBTRACE,
3473 (" added periph to queue\n"));
3474 perph->pinfo.priority = new_priority;
3475 perph->pinfo.generation = ++device->drvq.generation;
3476 camq_insert(&device->drvq, &perph->pinfo);
3477 runq = xpt_schedule_dev_allocq(perph->path->bus, device);
3481 CAM_DEBUG(perph->path, CAM_DEBUG_SUBTRACE,
3482 (" calling xpt_run_devq\n"));
3483 xpt_run_dev_allocq(perph->path->bus);
3489 * Schedule a device to run on a given queue.
3490 * If the device was inserted as a new entry on the queue,
3491 * return 1 meaning the device queue should be run. If we
3492 * were already queued, implying someone else has already
3493 * started the queue, return 0 so the caller doesn't attempt
3494 * to run the queue. Must be run at either splsoftcam
3495 * (or splcam since that encompases splsoftcam).
3498 xpt_schedule_dev(struct camq *queue, cam_pinfo *pinfo,
3499 u_int32_t new_priority)
3502 u_int32_t old_priority;
3504 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_schedule_dev\n"));
3506 old_priority = pinfo->priority;
3509 * Are we already queued?
3511 if (pinfo->index != CAM_UNQUEUED_INDEX) {
3512 /* Simply reorder based on new priority */
3513 if (new_priority < old_priority) {
3514 camq_change_priority(queue, pinfo->index,
3516 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3517 ("changed priority to %d\n",
3522 /* New entry on the queue */
3523 if (new_priority < old_priority)
3524 pinfo->priority = new_priority;
3526 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3527 ("Inserting onto queue\n"));
3528 pinfo->generation = ++queue->generation;
3529 camq_insert(queue, pinfo);
3536 xpt_run_dev_allocq(struct cam_eb *bus)
3538 struct cam_devq *devq;
3541 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_run_dev_allocq\n"));
3542 devq = bus->sim->devq;
3544 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3545 (" qfrozen_cnt == 0x%x, entries == %d, "
3546 "openings == %d, active == %d\n",
3547 devq->alloc_queue.qfrozen_cnt,
3548 devq->alloc_queue.entries,
3549 devq->alloc_openings,
3550 devq->alloc_active));
3553 devq->alloc_queue.qfrozen_cnt++;
3554 while ((devq->alloc_queue.entries > 0)
3555 && (devq->alloc_openings > 0)
3556 && (devq->alloc_queue.qfrozen_cnt <= 1)) {
3557 struct cam_ed_qinfo *qinfo;
3558 struct cam_ed *device;
3559 union ccb *work_ccb;
3560 struct cam_periph *drv;
3563 qinfo = (struct cam_ed_qinfo *)camq_remove(&devq->alloc_queue,
3565 device = qinfo->device;
3567 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3568 ("running device %p\n", device));
3570 drvq = &device->drvq;
3573 if (drvq->entries <= 0) {
3574 panic("xpt_run_dev_allocq: "
3575 "Device on queue without any work to do");
3578 if ((work_ccb = xpt_get_ccb(device)) != NULL) {
3579 devq->alloc_openings--;
3580 devq->alloc_active++;
3581 drv = (struct cam_periph*)camq_remove(drvq, CAMQ_HEAD);
3583 xpt_setup_ccb(&work_ccb->ccb_h, drv->path,
3584 drv->pinfo.priority);
3585 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3586 ("calling periph start\n"));
3587 drv->periph_start(drv, work_ccb);
3590 * Malloc failure in alloc_ccb
3593 * XXX add us to a list to be run from free_ccb
3594 * if we don't have any ccbs active on this
3595 * device queue otherwise we may never get run
3601 /* Raise IPL for possible insertion and test at top of loop */
3604 if (drvq->entries > 0) {
3605 /* We have more work. Attempt to reschedule */
3606 xpt_schedule_dev_allocq(bus, device);
3609 devq->alloc_queue.qfrozen_cnt--;
3614 xpt_run_dev_sendq(struct cam_eb *bus)
3616 struct cam_devq *devq;
3619 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_run_dev_sendq\n"));
3621 devq = bus->sim->devq;
3624 devq->send_queue.qfrozen_cnt++;
3627 while ((devq->send_queue.entries > 0)
3628 && (devq->send_openings > 0)) {
3629 struct cam_ed_qinfo *qinfo;
3630 struct cam_ed *device;
3631 union ccb *work_ccb;
3632 struct cam_sim *sim;
3636 if (devq->send_queue.qfrozen_cnt > 1) {
3641 qinfo = (struct cam_ed_qinfo *)camq_remove(&devq->send_queue,
3643 device = qinfo->device;
3646 * If the device has been "frozen", don't attempt
3649 if (device->qfrozen_cnt > 0) {
3654 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3655 ("running device %p\n", device));
3657 work_ccb = cam_ccbq_peek_ccb(&device->ccbq, CAMQ_HEAD);
3658 if (work_ccb == NULL) {
3659 printf("device on run queue with no ccbs???\n");
3664 if ((work_ccb->ccb_h.flags & CAM_HIGH_POWER) != 0) {
3666 if (num_highpower <= 0) {
3668 * We got a high power command, but we
3669 * don't have any available slots. Freeze
3670 * the device queue until we have a slot
3673 device->qfrozen_cnt++;
3674 STAILQ_INSERT_TAIL(&highpowerq,
3682 * Consume a high power slot while
3688 devq->active_dev = device;
3689 cam_ccbq_remove_ccb(&device->ccbq, work_ccb);
3691 cam_ccbq_send_ccb(&device->ccbq, work_ccb);
3694 devq->send_openings--;
3695 devq->send_active++;
3697 if (device->ccbq.queue.entries > 0)
3698 xpt_schedule_dev_sendq(bus, device);
3700 if (work_ccb && (work_ccb->ccb_h.flags & CAM_DEV_QFREEZE) != 0){
3702 * The client wants to freeze the queue
3703 * after this CCB is sent.
3706 device->qfrozen_cnt++;
3712 /* In Target mode, the peripheral driver knows best... */
3713 if (work_ccb->ccb_h.func_code == XPT_SCSI_IO) {
3714 if ((device->inq_flags & SID_CmdQue) != 0
3715 && work_ccb->csio.tag_action != CAM_TAG_ACTION_NONE)
3716 work_ccb->ccb_h.flags |= CAM_TAG_ACTION_VALID;
3719 * Clear this in case of a retried CCB that
3720 * failed due to a rejected tag.
3722 work_ccb->ccb_h.flags &= ~CAM_TAG_ACTION_VALID;
3726 * Device queues can be shared among multiple sim instances
3727 * that reside on different busses. Use the SIM in the queue
3728 * CCB's path, rather than the one in the bus that was passed
3729 * into this function.
3731 sim = work_ccb->ccb_h.path->bus->sim;
3732 (*(sim->sim_action))(sim, work_ccb);
3735 devq->active_dev = NULL;
3737 /* Raise IPL for possible insertion and test at top of loop */
3742 devq->send_queue.qfrozen_cnt--;
3747 * This function merges stuff from the slave ccb into the master ccb, while
3748 * keeping important fields in the master ccb constant.
3751 xpt_merge_ccb(union ccb *master_ccb, union ccb *slave_ccb)
3754 * Pull fields that are valid for peripheral drivers to set
3755 * into the master CCB along with the CCB "payload".
3757 master_ccb->ccb_h.retry_count = slave_ccb->ccb_h.retry_count;
3758 master_ccb->ccb_h.func_code = slave_ccb->ccb_h.func_code;
3759 master_ccb->ccb_h.timeout = slave_ccb->ccb_h.timeout;
3760 master_ccb->ccb_h.flags = slave_ccb->ccb_h.flags;
3761 bcopy(&(&slave_ccb->ccb_h)[1], &(&master_ccb->ccb_h)[1],
3762 sizeof(union ccb) - sizeof(struct ccb_hdr));
3766 xpt_setup_ccb(struct ccb_hdr *ccb_h, struct cam_path *path, u_int32_t priority)
3768 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_setup_ccb\n"));
3769 ccb_h->pinfo.priority = priority;
3771 ccb_h->path_id = path->bus->path_id;
3773 ccb_h->target_id = path->target->target_id;
3775 ccb_h->target_id = CAM_TARGET_WILDCARD;
3777 ccb_h->target_lun = path->device->lun_id;
3778 ccb_h->pinfo.generation = ++path->device->ccbq.queue.generation;
3780 ccb_h->target_lun = CAM_TARGET_WILDCARD;
3782 ccb_h->pinfo.index = CAM_UNQUEUED_INDEX;
3786 /* Path manipulation functions */
3788 xpt_create_path(struct cam_path **new_path_ptr, struct cam_periph *perph,
3789 path_id_t path_id, target_id_t target_id, lun_id_t lun_id)
3791 struct cam_path *path;
3794 path = (struct cam_path *)malloc(sizeof(*path), M_DEVBUF, M_NOWAIT);
3797 status = CAM_RESRC_UNAVAIL;
3800 status = xpt_compile_path(path, perph, path_id, target_id, lun_id);
3801 if (status != CAM_REQ_CMP) {
3802 free(path, M_DEVBUF);
3805 *new_path_ptr = path;
3810 xpt_compile_path(struct cam_path *new_path, struct cam_periph *perph,
3811 path_id_t path_id, target_id_t target_id, lun_id_t lun_id)
3814 struct cam_et *target;
3815 struct cam_ed *device;
3819 status = CAM_REQ_CMP; /* Completed without error */
3820 target = NULL; /* Wildcarded */
3821 device = NULL; /* Wildcarded */
3824 * We will potentially modify the EDT, so block interrupts
3825 * that may attempt to create cam paths.
3828 bus = xpt_find_bus(path_id);
3830 status = CAM_PATH_INVALID;
3832 target = xpt_find_target(bus, target_id);
3833 if (target == NULL) {
3835 struct cam_et *new_target;
3837 new_target = xpt_alloc_target(bus, target_id);
3838 if (new_target == NULL) {
3839 status = CAM_RESRC_UNAVAIL;
3841 target = new_target;
3844 if (target != NULL) {
3845 device = xpt_find_device(target, lun_id);
3846 if (device == NULL) {
3848 struct cam_ed *new_device;
3850 new_device = xpt_alloc_device(bus,
3853 if (new_device == NULL) {
3854 status = CAM_RESRC_UNAVAIL;
3856 device = new_device;
3864 * Only touch the user's data if we are successful.
3866 if (status == CAM_REQ_CMP) {
3867 new_path->periph = perph;
3868 new_path->bus = bus;
3869 new_path->target = target;
3870 new_path->device = device;
3871 CAM_DEBUG(new_path, CAM_DEBUG_TRACE, ("xpt_compile_path\n"));
3874 xpt_release_device(bus, target, device);
3876 xpt_release_target(bus, target);
3878 xpt_release_bus(bus);
3884 xpt_release_path(struct cam_path *path)
3886 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_release_path\n"));
3887 if (path->device != NULL) {
3888 xpt_release_device(path->bus, path->target, path->device);
3889 path->device = NULL;
3891 if (path->target != NULL) {
3892 xpt_release_target(path->bus, path->target);
3893 path->target = NULL;
3895 if (path->bus != NULL) {
3896 xpt_release_bus(path->bus);
3902 xpt_free_path(struct cam_path *path)
3904 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_free_path\n"));
3905 xpt_release_path(path);
3906 free(path, M_DEVBUF);
3911 * Return -1 for failure, 0 for exact match, 1 for match with wildcards
3912 * in path1, 2 for match with wildcards in path2.
3915 xpt_path_comp(struct cam_path *path1, struct cam_path *path2)
3919 if (path1->bus != path2->bus) {
3920 if (path1->bus->path_id == CAM_BUS_WILDCARD)
3922 else if (path2->bus->path_id == CAM_BUS_WILDCARD)
3927 if (path1->target != path2->target) {
3928 if (path1->target->target_id == CAM_TARGET_WILDCARD) {
3931 } else if (path2->target->target_id == CAM_TARGET_WILDCARD)
3936 if (path1->device != path2->device) {
3937 if (path1->device->lun_id == CAM_LUN_WILDCARD) {
3940 } else if (path2->device->lun_id == CAM_LUN_WILDCARD)
3949 xpt_print_path(struct cam_path *path)
3952 printf("(nopath): ");
3954 if (path->periph != NULL)
3955 printf("(%s%d:", path->periph->periph_name,
3956 path->periph->unit_number);
3958 printf("(noperiph:");
3960 if (path->bus != NULL)
3961 printf("%s%d:%d:", path->bus->sim->sim_name,
3962 path->bus->sim->unit_number,
3963 path->bus->sim->bus_id);
3967 if (path->target != NULL)
3968 printf("%d:", path->target->target_id);
3972 if (path->device != NULL)
3973 printf("%d): ", path->device->lun_id);
3980 xpt_path_path_id(struct cam_path *path)
3982 return(path->bus->path_id);
3986 xpt_path_target_id(struct cam_path *path)
3988 if (path->target != NULL)
3989 return (path->target->target_id);
3991 return (CAM_TARGET_WILDCARD);
3995 xpt_path_lun_id(struct cam_path *path)
3997 if (path->device != NULL)
3998 return (path->device->lun_id);
4000 return (CAM_LUN_WILDCARD);
4004 xpt_path_sim(struct cam_path *path)
4006 return (path->bus->sim);
4010 xpt_path_periph(struct cam_path *path)
4012 return (path->periph);
4016 * Release a CAM control block for the caller. Remit the cost of the structure
4017 * to the device referenced by the path. If the this device had no 'credits'
4018 * and peripheral drivers have registered async callbacks for this notification
4022 xpt_release_ccb(union ccb *free_ccb)
4025 struct cam_path *path;
4026 struct cam_ed *device;
4029 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_release_ccb\n"));
4030 path = free_ccb->ccb_h.path;
4031 device = path->device;
4034 cam_ccbq_release_opening(&device->ccbq);
4035 if (xpt_ccb_count > xpt_max_ccbs) {
4036 xpt_free_ccb(free_ccb);
4039 SLIST_INSERT_HEAD(&ccb_freeq, &free_ccb->ccb_h, xpt_links.sle);
4041 bus->sim->devq->alloc_openings++;
4042 bus->sim->devq->alloc_active--;
4043 /* XXX Turn this into an inline function - xpt_run_device?? */
4044 if ((device_is_alloc_queued(device) == 0)
4045 && (device->drvq.entries > 0)) {
4046 xpt_schedule_dev_allocq(bus, device);
4049 if (dev_allocq_is_runnable(bus->sim->devq))
4050 xpt_run_dev_allocq(bus);
4053 /* Functions accessed by SIM drivers */
4056 * A sim structure, listing the SIM entry points and instance
4057 * identification info is passed to xpt_bus_register to hook the SIM
4058 * into the CAM framework. xpt_bus_register creates a cam_eb entry
4059 * for this new bus and places it in the array of busses and assigns
4060 * it a path_id. The path_id may be influenced by "hard wiring"
4061 * information specified by the user. Once interrupt services are
4062 * availible, the bus will be probed.
4065 xpt_bus_register(struct cam_sim *sim, u_int32_t bus)
4067 struct cam_eb *new_bus;
4068 struct cam_eb *old_bus;
4069 struct ccb_pathinq cpi;
4073 new_bus = (struct cam_eb *)malloc(sizeof(*new_bus),
4074 M_DEVBUF, M_NOWAIT);
4075 if (new_bus == NULL) {
4076 /* Couldn't satisfy request */
4077 return (CAM_RESRC_UNAVAIL);
4080 if (strcmp(sim->sim_name, "xpt") != 0) {
4083 xptpathid(sim->sim_name, sim->unit_number, sim->bus_id);
4086 TAILQ_INIT(&new_bus->et_entries);
4087 new_bus->path_id = sim->path_id;
4089 timevalclear(&new_bus->last_reset);
4091 new_bus->refcount = 1; /* Held until a bus_deregister event */
4092 new_bus->generation = 0;
4094 old_bus = TAILQ_FIRST(&xpt_busses);
4095 while (old_bus != NULL
4096 && old_bus->path_id < new_bus->path_id)
4097 old_bus = TAILQ_NEXT(old_bus, links);
4098 if (old_bus != NULL)
4099 TAILQ_INSERT_BEFORE(old_bus, new_bus, links);
4101 TAILQ_INSERT_TAIL(&xpt_busses, new_bus, links);
4105 /* Notify interested parties */
4106 if (sim->path_id != CAM_XPT_PATH_ID) {
4107 struct cam_path path;
4109 xpt_compile_path(&path, /*periph*/NULL, sim->path_id,
4110 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
4111 xpt_setup_ccb(&cpi.ccb_h, &path, /*priority*/1);
4112 cpi.ccb_h.func_code = XPT_PATH_INQ;
4113 xpt_action((union ccb *)&cpi);
4114 xpt_async(AC_PATH_REGISTERED, xpt_periph->path, &cpi);
4115 xpt_release_path(&path);
4117 return (CAM_SUCCESS);
4121 xpt_bus_deregister(path_id_t pathid)
4123 struct cam_path bus_path;
4126 status = xpt_compile_path(&bus_path, NULL, pathid,
4127 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
4128 if (status != CAM_REQ_CMP)
4131 xpt_async(AC_LOST_DEVICE, &bus_path, NULL);
4132 xpt_async(AC_PATH_DEREGISTERED, &bus_path, NULL);
4134 /* Release the reference count held while registered. */
4135 xpt_release_bus(bus_path.bus);
4136 xpt_release_path(&bus_path);
4138 return (CAM_REQ_CMP);
4142 xptnextfreepathid(void)
4149 bus = TAILQ_FIRST(&xpt_busses);
4151 /* Find an unoccupied pathid */
4153 && bus->path_id <= pathid) {
4154 if (bus->path_id == pathid)
4156 bus = TAILQ_NEXT(bus, links);
4160 * Ensure that this pathid is not reserved for
4161 * a bus that may be registered in the future.
4163 if (resource_string_value("scbus", pathid, "at", &strval) == 0) {
4165 /* Start the search over */
4172 xptpathid(const char *sim_name, int sim_unit, int sim_bus)
4176 char buf[32], *strval;
4178 pathid = CAM_XPT_PATH_ID;
4179 snprintf(buf, sizeof(buf), "%s%d", sim_name, sim_unit);
4181 while ((i = resource_locate(i, "scbus")) != -1) {
4182 dunit = resource_query_unit(i);
4183 if (dunit < 0) /* unwired?! */
4185 if (resource_string_value("scbus", dunit, "at", &strval) != 0)
4187 if (strcmp(buf, strval) != 0)
4189 if (resource_int_value("scbus", dunit, "bus", &val) == 0) {
4190 if (sim_bus == val) {
4194 } else if (sim_bus == 0) {
4195 /* Unspecified matches bus 0 */
4199 printf("Ambiguous scbus configuration for %s%d "
4200 "bus %d, cannot wire down. The kernel "
4201 "config entry for scbus%d should "
4202 "specify a controller bus.\n"
4203 "Scbus will be assigned dynamically.\n",
4204 sim_name, sim_unit, sim_bus, dunit);
4209 if (pathid == CAM_XPT_PATH_ID)
4210 pathid = xptnextfreepathid();
4215 xpt_async(u_int32_t async_code, struct cam_path *path, void *async_arg)
4218 struct cam_et *target, *next_target;
4219 struct cam_ed *device, *next_device;
4222 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_async\n"));
4225 * Most async events come from a CAM interrupt context. In
4226 * a few cases, the error recovery code at the peripheral layer,
4227 * which may run from our SWI or a process context, may signal
4228 * deferred events with a call to xpt_async. Ensure async
4229 * notifications are serialized by blocking cam interrupts.
4235 if (async_code == AC_BUS_RESET) {
4239 /* Update our notion of when the last reset occurred */
4240 microtime(&bus->last_reset);
4244 for (target = TAILQ_FIRST(&bus->et_entries);
4246 target = next_target) {
4248 next_target = TAILQ_NEXT(target, links);
4250 if (path->target != target
4251 && path->target->target_id != CAM_TARGET_WILDCARD
4252 && target->target_id != CAM_TARGET_WILDCARD)
4255 if (async_code == AC_SENT_BDR) {
4258 /* Update our notion of when the last reset occurred */
4260 microtime(&path->target->last_reset);
4264 for (device = TAILQ_FIRST(&target->ed_entries);
4266 device = next_device) {
4268 next_device = TAILQ_NEXT(device, links);
4270 if (path->device != device
4271 && path->device->lun_id != CAM_LUN_WILDCARD
4272 && device->lun_id != CAM_LUN_WILDCARD)
4275 xpt_dev_async(async_code, bus, target,
4278 xpt_async_bcast(&device->asyncs, async_code,
4284 * If this wasn't a fully wildcarded async, tell all
4285 * clients that want all async events.
4287 if (bus != xpt_periph->path->bus)
4288 xpt_async_bcast(&xpt_periph->path->device->asyncs, async_code,
4294 xpt_async_bcast(struct async_list *async_head,
4295 u_int32_t async_code,
4296 struct cam_path *path, void *async_arg)
4298 struct async_node *cur_entry;
4300 cur_entry = SLIST_FIRST(async_head);
4301 while (cur_entry != NULL) {
4302 struct async_node *next_entry;
4304 * Grab the next list entry before we call the current
4305 * entry's callback. This is because the callback function
4306 * can delete its async callback entry.
4308 next_entry = SLIST_NEXT(cur_entry, links);
4309 if ((cur_entry->event_enable & async_code) != 0)
4310 cur_entry->callback(cur_entry->callback_arg,
4313 cur_entry = next_entry;
4318 * Handle any per-device event notifications that require action by the XPT.
4321 xpt_dev_async(u_int32_t async_code, struct cam_eb *bus, struct cam_et *target,
4322 struct cam_ed *device, void *async_arg)
4325 struct cam_path newpath;
4328 * We only need to handle events for real devices.
4330 if (target->target_id == CAM_TARGET_WILDCARD
4331 || device->lun_id == CAM_LUN_WILDCARD)
4335 * We need our own path with wildcards expanded to
4336 * handle certain types of events.
4338 if ((async_code == AC_SENT_BDR)
4339 || (async_code == AC_BUS_RESET)
4340 || (async_code == AC_INQ_CHANGED))
4341 status = xpt_compile_path(&newpath, NULL,
4346 status = CAM_REQ_CMP_ERR;
4348 if (status == CAM_REQ_CMP) {
4351 * Allow transfer negotiation to occur in a
4352 * tag free environment.
4354 if (async_code == AC_SENT_BDR
4355 || async_code == AC_BUS_RESET)
4356 xpt_toggle_tags(&newpath);
4358 if (async_code == AC_INQ_CHANGED) {
4360 * We've sent a start unit command, or
4361 * something similar to a device that
4362 * may have caused its inquiry data to
4363 * change. So we re-scan the device to
4364 * refresh the inquiry data for it.
4366 xpt_scan_lun(newpath.periph, &newpath,
4367 CAM_EXPECT_INQ_CHANGE, NULL);
4369 xpt_release_path(&newpath);
4370 } else if (async_code == AC_LOST_DEVICE) {
4371 device->flags |= CAM_DEV_UNCONFIGURED;
4372 } else if (async_code == AC_TRANSFER_NEG) {
4373 struct ccb_trans_settings *settings;
4375 settings = (struct ccb_trans_settings *)async_arg;
4376 xpt_set_transfer_settings(settings, device,
4377 /*async_update*/TRUE);
4382 xpt_freeze_devq(struct cam_path *path, u_int count)
4385 struct ccb_hdr *ccbh;
4388 path->device->qfrozen_cnt += count;
4391 * Mark the last CCB in the queue as needing
4392 * to be requeued if the driver hasn't
4393 * changed it's state yet. This fixes a race
4394 * where a ccb is just about to be queued to
4395 * a controller driver when it's interrupt routine
4396 * freezes the queue. To completly close the
4397 * hole, controller drives must check to see
4398 * if a ccb's status is still CAM_REQ_INPROG
4399 * under spl protection just before they queue
4400 * the CCB. See ahc_action/ahc_freeze_devq for
4403 ccbh = TAILQ_LAST(&path->device->ccbq.active_ccbs, ccb_hdr_tailq);
4404 if (ccbh && ccbh->status == CAM_REQ_INPROG)
4405 ccbh->status = CAM_REQUEUE_REQ;
4407 return (path->device->qfrozen_cnt);
4411 xpt_freeze_simq(struct cam_sim *sim, u_int count)
4413 sim->devq->send_queue.qfrozen_cnt += count;
4414 if (sim->devq->active_dev != NULL) {
4415 struct ccb_hdr *ccbh;
4417 ccbh = TAILQ_LAST(&sim->devq->active_dev->ccbq.active_ccbs,
4419 if (ccbh && ccbh->status == CAM_REQ_INPROG)
4420 ccbh->status = CAM_REQUEUE_REQ;
4422 return (sim->devq->send_queue.qfrozen_cnt);
4426 xpt_release_devq_timeout(void *arg)
4428 struct cam_ed *device;
4430 device = (struct cam_ed *)arg;
4432 xpt_release_devq_device(device, /*count*/1, /*run_queue*/TRUE);
4436 xpt_release_devq(struct cam_path *path, u_int count, int run_queue)
4438 xpt_release_devq_device(path->device, count, run_queue);
4442 xpt_release_devq_device(struct cam_ed *dev, u_int count, int run_queue)
4450 if (dev->qfrozen_cnt > 0) {
4452 count = (count > dev->qfrozen_cnt) ? dev->qfrozen_cnt : count;
4453 dev->qfrozen_cnt -= count;
4454 if (dev->qfrozen_cnt == 0) {
4457 * No longer need to wait for a successful
4458 * command completion.
4460 dev->flags &= ~CAM_DEV_REL_ON_COMPLETE;
4463 * Remove any timeouts that might be scheduled
4464 * to release this queue.
4466 if ((dev->flags & CAM_DEV_REL_TIMEOUT_PENDING) != 0) {
4467 untimeout(xpt_release_devq_timeout, dev,
4469 dev->flags &= ~CAM_DEV_REL_TIMEOUT_PENDING;
4473 * Now that we are unfrozen schedule the
4474 * device so any pending transactions are
4477 if ((dev->ccbq.queue.entries > 0)
4478 && (xpt_schedule_dev_sendq(dev->target->bus, dev))
4479 && (run_queue != 0)) {
4486 xpt_run_dev_sendq(dev->target->bus);
4491 xpt_release_simq(struct cam_sim *sim, int run_queue)
4496 sendq = &(sim->devq->send_queue);
4498 if (sendq->qfrozen_cnt > 0) {
4500 sendq->qfrozen_cnt--;
4501 if (sendq->qfrozen_cnt == 0) {
4505 * If there is a timeout scheduled to release this
4506 * sim queue, remove it. The queue frozen count is
4509 if ((sim->flags & CAM_SIM_REL_TIMEOUT_PENDING) != 0){
4510 untimeout(xpt_release_simq_timeout, sim,
4512 sim->flags &= ~CAM_SIM_REL_TIMEOUT_PENDING;
4514 bus = xpt_find_bus(sim->path_id);
4519 * Now that we are unfrozen run the send queue.
4521 xpt_run_dev_sendq(bus);
4523 xpt_release_bus(bus);
4531 xpt_release_simq_timeout(void *arg)
4533 struct cam_sim *sim;
4535 sim = (struct cam_sim *)arg;
4536 xpt_release_simq(sim, /* run_queue */ TRUE);
4540 xpt_done(union ccb *done_ccb)
4546 CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("xpt_done\n"));
4547 if ((done_ccb->ccb_h.func_code & XPT_FC_QUEUED) != 0) {
4549 * Queue up the request for handling by our SWI handler
4550 * any of the "non-immediate" type of ccbs.
4552 switch (done_ccb->ccb_h.path->periph->type) {
4553 case CAM_PERIPH_BIO:
4554 TAILQ_INSERT_TAIL(&cam_bioq, &done_ccb->ccb_h,
4556 done_ccb->ccb_h.pinfo.index = CAM_DONEQ_INDEX;
4559 case CAM_PERIPH_NET:
4560 TAILQ_INSERT_TAIL(&cam_netq, &done_ccb->ccb_h,
4562 done_ccb->ccb_h.pinfo.index = CAM_DONEQ_INDEX;
4575 new_ccb = malloc(sizeof(*new_ccb), M_DEVBUF, M_WAITOK);
4580 xpt_free_ccb(union ccb *free_ccb)
4582 free(free_ccb, M_DEVBUF);
4587 /* Private XPT functions */
4590 * Get a CAM control block for the caller. Charge the structure to the device
4591 * referenced by the path. If the this device has no 'credits' then the
4592 * device already has the maximum number of outstanding operations under way
4593 * and we return NULL. If we don't have sufficient resources to allocate more
4594 * ccbs, we also return NULL.
4597 xpt_get_ccb(struct cam_ed *device)
4603 if ((new_ccb = (union ccb *)ccb_freeq.slh_first) == NULL) {
4604 new_ccb = malloc(sizeof(*new_ccb), M_DEVBUF, M_NOWAIT);
4605 if (new_ccb == NULL) {
4609 callout_handle_init(&new_ccb->ccb_h.timeout_ch);
4610 SLIST_INSERT_HEAD(&ccb_freeq, &new_ccb->ccb_h,
4614 cam_ccbq_take_opening(&device->ccbq);
4615 SLIST_REMOVE_HEAD(&ccb_freeq, xpt_links.sle);
4621 xpt_release_bus(struct cam_eb *bus)
4626 if ((--bus->refcount == 0)
4627 && (TAILQ_FIRST(&bus->et_entries) == NULL)) {
4628 TAILQ_REMOVE(&xpt_busses, bus, links);
4631 free(bus, M_DEVBUF);
4636 static struct cam_et *
4637 xpt_alloc_target(struct cam_eb *bus, target_id_t target_id)
4639 struct cam_et *target;
4641 target = (struct cam_et *)malloc(sizeof(*target), M_DEVBUF, M_NOWAIT);
4642 if (target != NULL) {
4643 struct cam_et *cur_target;
4645 TAILQ_INIT(&target->ed_entries);
4647 target->target_id = target_id;
4648 target->refcount = 1;
4649 target->generation = 0;
4650 timevalclear(&target->last_reset);
4652 * Hold a reference to our parent bus so it
4653 * will not go away before we do.
4657 /* Insertion sort into our bus's target list */
4658 cur_target = TAILQ_FIRST(&bus->et_entries);
4659 while (cur_target != NULL && cur_target->target_id < target_id)
4660 cur_target = TAILQ_NEXT(cur_target, links);
4662 if (cur_target != NULL) {
4663 TAILQ_INSERT_BEFORE(cur_target, target, links);
4665 TAILQ_INSERT_TAIL(&bus->et_entries, target, links);
4673 xpt_release_target(struct cam_eb *bus, struct cam_et *target)
4678 if ((--target->refcount == 0)
4679 && (TAILQ_FIRST(&target->ed_entries) == NULL)) {
4680 TAILQ_REMOVE(&bus->et_entries, target, links);
4683 free(target, M_DEVBUF);
4684 xpt_release_bus(bus);
4689 static struct cam_ed *
4690 xpt_alloc_device(struct cam_eb *bus, struct cam_et *target, lun_id_t lun_id)
4692 struct cam_ed *device;
4693 struct cam_devq *devq;
4696 /* Make space for us in the device queue on our bus */
4697 devq = bus->sim->devq;
4698 status = cam_devq_resize(devq, devq->alloc_queue.array_size + 1);
4700 if (status != CAM_REQ_CMP) {
4703 device = (struct cam_ed *)malloc(sizeof(*device),
4704 M_DEVBUF, M_NOWAIT);
4707 if (device != NULL) {
4708 struct cam_ed *cur_device;
4710 cam_init_pinfo(&device->alloc_ccb_entry.pinfo);
4711 device->alloc_ccb_entry.device = device;
4712 cam_init_pinfo(&device->send_ccb_entry.pinfo);
4713 device->send_ccb_entry.device = device;
4714 device->target = target;
4715 device->lun_id = lun_id;
4716 /* Initialize our queues */
4717 if (camq_init(&device->drvq, 0) != 0) {
4718 free(device, M_DEVBUF);
4721 if (cam_ccbq_init(&device->ccbq,
4722 bus->sim->max_dev_openings) != 0) {
4723 camq_fini(&device->drvq);
4724 free(device, M_DEVBUF);
4727 SLIST_INIT(&device->asyncs);
4728 SLIST_INIT(&device->periphs);
4729 device->generation = 0;
4730 device->owner = NULL;
4732 * Take the default quirk entry until we have inquiry
4733 * data and can determine a better quirk to use.
4735 device->quirk = &xpt_quirk_table[xpt_quirk_table_size - 1];
4736 bzero(&device->inq_data, sizeof(device->inq_data));
4737 device->inq_flags = 0;
4738 device->queue_flags = 0;
4739 device->serial_num = NULL;
4740 device->serial_num_len = 0;
4741 device->qfrozen_cnt = 0;
4742 device->flags = CAM_DEV_UNCONFIGURED;
4743 device->tag_delay_count = 0;
4744 device->refcount = 1;
4745 callout_handle_init(&device->c_handle);
4748 * Hold a reference to our parent target so it
4749 * will not go away before we do.
4754 * XXX should be limited by number of CCBs this bus can
4757 xpt_max_ccbs += device->ccbq.devq_openings;
4758 /* Insertion sort into our target's device list */
4759 cur_device = TAILQ_FIRST(&target->ed_entries);
4760 while (cur_device != NULL && cur_device->lun_id < lun_id)
4761 cur_device = TAILQ_NEXT(cur_device, links);
4762 if (cur_device != NULL) {
4763 TAILQ_INSERT_BEFORE(cur_device, device, links);
4765 TAILQ_INSERT_TAIL(&target->ed_entries, device, links);
4767 target->generation++;
4773 xpt_release_device(struct cam_eb *bus, struct cam_et *target,
4774 struct cam_ed *device)
4779 if ((--device->refcount == 0)
4780 && ((device->flags & CAM_DEV_UNCONFIGURED) != 0)) {
4781 struct cam_devq *devq;
4783 if (device->alloc_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX
4784 || device->send_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX)
4785 panic("Removing device while still queued for ccbs");
4787 if ((device->flags & CAM_DEV_REL_TIMEOUT_PENDING) != 0)
4788 untimeout(xpt_release_devq_timeout, device,
4791 TAILQ_REMOVE(&target->ed_entries, device,links);
4792 target->generation++;
4793 xpt_max_ccbs -= device->ccbq.devq_openings;
4794 /* Release our slot in the devq */
4795 devq = bus->sim->devq;
4796 cam_devq_resize(devq, devq->alloc_queue.array_size - 1);
4798 free(device, M_DEVBUF);
4799 xpt_release_target(bus, target);
4805 xpt_dev_ccbq_resize(struct cam_path *path, int newopenings)
4815 diff = newopenings - (dev->ccbq.dev_active + dev->ccbq.dev_openings);
4816 result = cam_ccbq_resize(&dev->ccbq, newopenings);
4817 if (result == CAM_REQ_CMP && (diff < 0)) {
4818 dev->flags |= CAM_DEV_RESIZE_QUEUE_NEEDED;
4820 /* Adjust the global limit */
4821 xpt_max_ccbs += diff;
4826 static struct cam_eb *
4827 xpt_find_bus(path_id_t path_id)
4831 for (bus = TAILQ_FIRST(&xpt_busses);
4833 bus = TAILQ_NEXT(bus, links)) {
4834 if (bus->path_id == path_id) {
4842 static struct cam_et *
4843 xpt_find_target(struct cam_eb *bus, target_id_t target_id)
4845 struct cam_et *target;
4847 for (target = TAILQ_FIRST(&bus->et_entries);
4849 target = TAILQ_NEXT(target, links)) {
4850 if (target->target_id == target_id) {
4858 static struct cam_ed *
4859 xpt_find_device(struct cam_et *target, lun_id_t lun_id)
4861 struct cam_ed *device;
4863 for (device = TAILQ_FIRST(&target->ed_entries);
4865 device = TAILQ_NEXT(device, links)) {
4866 if (device->lun_id == lun_id) {
4875 union ccb *request_ccb;
4876 struct ccb_pathinq *cpi;
4878 } xpt_scan_bus_info;
4881 * To start a scan, request_ccb is an XPT_SCAN_BUS ccb.
4882 * As the scan progresses, xpt_scan_bus is used as the
4883 * callback on completion function.
4886 xpt_scan_bus(struct cam_periph *periph, union ccb *request_ccb)
4888 CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE,
4889 ("xpt_scan_bus\n"));
4890 switch (request_ccb->ccb_h.func_code) {
4893 xpt_scan_bus_info *scan_info;
4894 union ccb *work_ccb;
4895 struct cam_path *path;
4900 /* Find out the characteristics of the bus */
4901 work_ccb = xpt_alloc_ccb();
4902 xpt_setup_ccb(&work_ccb->ccb_h, request_ccb->ccb_h.path,
4903 request_ccb->ccb_h.pinfo.priority);
4904 work_ccb->ccb_h.func_code = XPT_PATH_INQ;
4905 xpt_action(work_ccb);
4906 if (work_ccb->ccb_h.status != CAM_REQ_CMP) {
4907 request_ccb->ccb_h.status = work_ccb->ccb_h.status;
4908 xpt_free_ccb(work_ccb);
4909 xpt_done(request_ccb);
4913 if ((work_ccb->cpi.hba_misc & PIM_NOINITIATOR) != 0) {
4915 * Can't scan the bus on an adapter that
4916 * cannot perform the initiator role.
4918 request_ccb->ccb_h.status = CAM_REQ_CMP;
4919 xpt_free_ccb(work_ccb);
4920 xpt_done(request_ccb);
4924 /* Save some state for use while we probe for devices */
4925 scan_info = (xpt_scan_bus_info *)
4926 malloc(sizeof(xpt_scan_bus_info), M_TEMP, M_WAITOK);
4927 scan_info->request_ccb = request_ccb;
4928 scan_info->cpi = &work_ccb->cpi;
4930 /* Cache on our stack so we can work asynchronously */
4931 max_target = scan_info->cpi->max_target;
4932 initiator_id = scan_info->cpi->initiator_id;
4935 * Don't count the initiator if the
4936 * initiator is addressable.
4938 scan_info->pending_count = max_target + 1;
4939 if (initiator_id <= max_target)
4940 scan_info->pending_count--;
4942 for (i = 0; i <= max_target; i++) {
4944 if (i == initiator_id)
4947 status = xpt_create_path(&path, xpt_periph,
4948 request_ccb->ccb_h.path_id,
4950 if (status != CAM_REQ_CMP) {
4951 printf("xpt_scan_bus: xpt_create_path failed"
4952 " with status %#x, bus scan halted\n",
4956 work_ccb = xpt_alloc_ccb();
4957 xpt_setup_ccb(&work_ccb->ccb_h, path,
4958 request_ccb->ccb_h.pinfo.priority);
4959 work_ccb->ccb_h.func_code = XPT_SCAN_LUN;
4960 work_ccb->ccb_h.cbfcnp = xpt_scan_bus;
4961 work_ccb->ccb_h.ppriv_ptr0 = scan_info;
4962 work_ccb->crcn.flags = request_ccb->crcn.flags;
4964 printf("xpt_scan_bus: probing %d:%d:%d\n",
4965 request_ccb->ccb_h.path_id, i, 0);
4967 xpt_action(work_ccb);
4973 xpt_scan_bus_info *scan_info;
4975 target_id_t target_id;
4978 /* Reuse the same CCB to query if a device was really found */
4979 scan_info = (xpt_scan_bus_info *)request_ccb->ccb_h.ppriv_ptr0;
4980 xpt_setup_ccb(&request_ccb->ccb_h, request_ccb->ccb_h.path,
4981 request_ccb->ccb_h.pinfo.priority);
4982 request_ccb->ccb_h.func_code = XPT_GDEV_TYPE;
4984 path_id = request_ccb->ccb_h.path_id;
4985 target_id = request_ccb->ccb_h.target_id;
4986 lun_id = request_ccb->ccb_h.target_lun;
4987 xpt_action(request_ccb);
4990 printf("xpt_scan_bus: got back probe from %d:%d:%d\n",
4991 path_id, target_id, lun_id);
4994 if (request_ccb->ccb_h.status != CAM_REQ_CMP) {
4995 struct cam_ed *device;
4996 struct cam_et *target;
5000 * If we already probed lun 0 successfully, or
5001 * we have additional configured luns on this
5002 * target that might have "gone away", go onto
5005 target = request_ccb->ccb_h.path->target;
5007 * We may touch devices that we don't
5008 * hold references too, so ensure they
5009 * don't disappear out from under us.
5010 * The target above is referenced by the
5011 * path in the request ccb.
5015 device = TAILQ_FIRST(&target->ed_entries);
5016 if (device != NULL) {
5017 phl = device->quirk->quirks & CAM_QUIRK_HILUNS;
5018 if (device->lun_id == 0)
5019 device = TAILQ_NEXT(device, links);
5022 if ((lun_id != 0) || (device != NULL)) {
5023 if (lun_id < (CAM_SCSI2_MAXLUN-1) || phl)
5027 struct cam_ed *device;
5029 device = request_ccb->ccb_h.path->device;
5031 if ((device->quirk->quirks & CAM_QUIRK_NOLUNS) == 0) {
5032 /* Try the next lun */
5033 if (lun_id < (CAM_SCSI2_MAXLUN-1) ||
5034 (device->quirk->quirks & CAM_QUIRK_HILUNS))
5039 xpt_free_path(request_ccb->ccb_h.path);
5042 if ((lun_id == request_ccb->ccb_h.target_lun)
5043 || lun_id > scan_info->cpi->max_lun) {
5046 xpt_free_ccb(request_ccb);
5047 scan_info->pending_count--;
5048 if (scan_info->pending_count == 0) {
5049 xpt_free_ccb((union ccb *)scan_info->cpi);
5050 request_ccb = scan_info->request_ccb;
5051 free(scan_info, M_TEMP);
5052 request_ccb->ccb_h.status = CAM_REQ_CMP;
5053 xpt_done(request_ccb);
5056 /* Try the next device */
5057 struct cam_path *path;
5060 path = request_ccb->ccb_h.path;
5061 status = xpt_create_path(&path, xpt_periph,
5062 path_id, target_id, lun_id);
5063 if (status != CAM_REQ_CMP) {
5064 printf("xpt_scan_bus: xpt_create_path failed "
5065 "with status %#x, halting LUN scan\n",
5067 xpt_free_ccb(request_ccb);
5068 scan_info->pending_count--;
5069 if (scan_info->pending_count == 0) {
5071 (union ccb *)scan_info->cpi);
5072 request_ccb = scan_info->request_ccb;
5073 free(scan_info, M_TEMP);
5074 request_ccb->ccb_h.status = CAM_REQ_CMP;
5075 xpt_done(request_ccb);
5079 xpt_setup_ccb(&request_ccb->ccb_h, path,
5080 request_ccb->ccb_h.pinfo.priority);
5081 request_ccb->ccb_h.func_code = XPT_SCAN_LUN;
5082 request_ccb->ccb_h.cbfcnp = xpt_scan_bus;
5083 request_ccb->ccb_h.ppriv_ptr0 = scan_info;
5084 request_ccb->crcn.flags =
5085 scan_info->request_ccb->crcn.flags;
5087 xpt_print_path(path);
5088 printf("xpt_scan bus probing\n");
5090 xpt_action(request_ccb);
5105 PROBE_TUR_FOR_NEGOTIATION
5109 PROBE_INQUIRY_CKSUM = 0x01,
5110 PROBE_SERIAL_CKSUM = 0x02,
5111 PROBE_NO_ANNOUNCE = 0x04
5115 TAILQ_HEAD(, ccb_hdr) request_ccbs;
5116 probe_action action;
5117 union ccb saved_ccb;
5120 u_int8_t digest[16];
5124 xpt_scan_lun(struct cam_periph *periph, struct cam_path *path,
5125 cam_flags flags, union ccb *request_ccb)
5127 struct ccb_pathinq cpi;
5129 struct cam_path *new_path;
5130 struct cam_periph *old_periph;
5133 CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE,
5134 ("xpt_scan_lun\n"));
5136 xpt_setup_ccb(&cpi.ccb_h, path, /*priority*/1);
5137 cpi.ccb_h.func_code = XPT_PATH_INQ;
5138 xpt_action((union ccb *)&cpi);
5140 if (cpi.ccb_h.status != CAM_REQ_CMP) {
5141 if (request_ccb != NULL) {
5142 request_ccb->ccb_h.status = cpi.ccb_h.status;
5143 xpt_done(request_ccb);
5148 if ((cpi.hba_misc & PIM_NOINITIATOR) != 0) {
5150 * Can't scan the bus on an adapter that
5151 * cannot perform the initiator role.
5153 if (request_ccb != NULL) {
5154 request_ccb->ccb_h.status = CAM_REQ_CMP;
5155 xpt_done(request_ccb);
5160 if (request_ccb == NULL) {
5161 request_ccb = malloc(sizeof(union ccb), M_TEMP, M_NOWAIT);
5162 if (request_ccb == NULL) {
5163 xpt_print_path(path);
5164 printf("xpt_scan_lun: can't allocate CCB, can't "
5168 new_path = malloc(sizeof(*new_path), M_TEMP, M_NOWAIT);
5169 if (new_path == NULL) {
5170 xpt_print_path(path);
5171 printf("xpt_scan_lun: can't allocate path, can't "
5173 free(request_ccb, M_TEMP);
5176 status = xpt_compile_path(new_path, xpt_periph,
5178 path->target->target_id,
5179 path->device->lun_id);
5181 if (status != CAM_REQ_CMP) {
5182 xpt_print_path(path);
5183 printf("xpt_scan_lun: can't compile path, can't "
5185 free(request_ccb, M_TEMP);
5186 free(new_path, M_TEMP);
5189 xpt_setup_ccb(&request_ccb->ccb_h, new_path, /*priority*/ 1);
5190 request_ccb->ccb_h.cbfcnp = xptscandone;
5191 request_ccb->ccb_h.func_code = XPT_SCAN_LUN;
5192 request_ccb->crcn.flags = flags;
5196 if ((old_periph = cam_periph_find(path, "probe")) != NULL) {
5199 softc = (probe_softc *)old_periph->softc;
5200 TAILQ_INSERT_TAIL(&softc->request_ccbs, &request_ccb->ccb_h,
5203 status = cam_periph_alloc(proberegister, NULL, probecleanup,
5204 probestart, "probe",
5206 request_ccb->ccb_h.path, NULL, 0,
5209 if (status != CAM_REQ_CMP) {
5210 xpt_print_path(path);
5211 printf("xpt_scan_lun: cam_alloc_periph returned an "
5212 "error, can't continue probe\n");
5213 request_ccb->ccb_h.status = status;
5214 xpt_done(request_ccb);
5221 xptscandone(struct cam_periph *periph, union ccb *done_ccb)
5223 xpt_release_path(done_ccb->ccb_h.path);
5224 free(done_ccb->ccb_h.path, M_TEMP);
5225 free(done_ccb, M_TEMP);
5229 proberegister(struct cam_periph *periph, void *arg)
5231 union ccb *request_ccb; /* CCB representing the probe request */
5234 request_ccb = (union ccb *)arg;
5235 if (periph == NULL) {
5236 printf("proberegister: periph was NULL!!\n");
5237 return(CAM_REQ_CMP_ERR);
5240 if (request_ccb == NULL) {
5241 printf("proberegister: no probe CCB, "
5242 "can't register device\n");
5243 return(CAM_REQ_CMP_ERR);
5246 softc = (probe_softc *)malloc(sizeof(*softc), M_TEMP, M_NOWAIT);
5248 if (softc == NULL) {
5249 printf("proberegister: Unable to probe new device. "
5250 "Unable to allocate softc\n");
5251 return(CAM_REQ_CMP_ERR);
5253 TAILQ_INIT(&softc->request_ccbs);
5254 TAILQ_INSERT_TAIL(&softc->request_ccbs, &request_ccb->ccb_h,
5257 periph->softc = softc;
5258 cam_periph_acquire(periph);
5260 * Ensure we've waited at least a bus settle
5261 * delay before attempting to probe the device.
5262 * For HBAs that don't do bus resets, this won't make a difference.
5264 cam_periph_freeze_after_event(periph, &periph->path->bus->last_reset,
5266 probeschedule(periph);
5267 return(CAM_REQ_CMP);
5271 probeschedule(struct cam_periph *periph)
5273 struct ccb_pathinq cpi;
5277 softc = (probe_softc *)periph->softc;
5278 ccb = (union ccb *)TAILQ_FIRST(&softc->request_ccbs);
5280 xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1);
5281 cpi.ccb_h.func_code = XPT_PATH_INQ;
5282 xpt_action((union ccb *)&cpi);
5285 * If a device has gone away and another device, or the same one,
5286 * is back in the same place, it should have a unit attention
5287 * condition pending. It will not report the unit attention in
5288 * response to an inquiry, which may leave invalid transfer
5289 * negotiations in effect. The TUR will reveal the unit attention
5290 * condition. Only send the TUR for lun 0, since some devices
5291 * will get confused by commands other than inquiry to non-existent
5292 * luns. If you think a device has gone away start your scan from
5293 * lun 0. This will insure that any bogus transfer settings are
5296 * If we haven't seen the device before and the controller supports
5297 * some kind of transfer negotiation, negotiate with the first
5298 * sent command if no bus reset was performed at startup. This
5299 * ensures that the device is not confused by transfer negotiation
5300 * settings left over by loader or BIOS action.
5302 if (((ccb->ccb_h.path->device->flags & CAM_DEV_UNCONFIGURED) == 0)
5303 && (ccb->ccb_h.target_lun == 0)) {
5304 softc->action = PROBE_TUR;
5305 } else if ((cpi.hba_inquiry & (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE)) != 0
5306 && (cpi.hba_misc & PIM_NOBUSRESET) != 0) {
5307 proberequestdefaultnegotiation(periph);
5308 softc->action = PROBE_INQUIRY;
5310 softc->action = PROBE_INQUIRY;
5313 if (ccb->crcn.flags & CAM_EXPECT_INQ_CHANGE)
5314 softc->flags |= PROBE_NO_ANNOUNCE;
5316 softc->flags &= ~PROBE_NO_ANNOUNCE;
5318 xpt_schedule(periph, ccb->ccb_h.pinfo.priority);
5322 probestart(struct cam_periph *periph, union ccb *start_ccb)
5324 /* Probe the device that our peripheral driver points to */
5325 struct ccb_scsiio *csio;
5328 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("probestart\n"));
5330 softc = (probe_softc *)periph->softc;
5331 csio = &start_ccb->csio;
5333 switch (softc->action) {
5335 case PROBE_TUR_FOR_NEGOTIATION:
5337 scsi_test_unit_ready(csio,
5346 case PROBE_FULL_INQUIRY:
5349 struct scsi_inquiry_data *inq_buf;
5351 inq_buf = &periph->path->device->inq_data;
5353 * If the device is currently configured, we calculate an
5354 * MD5 checksum of the inquiry data, and if the serial number
5355 * length is greater than 0, add the serial number data
5356 * into the checksum as well. Once the inquiry and the
5357 * serial number check finish, we attempt to figure out
5358 * whether we still have the same device.
5360 if ((periph->path->device->flags & CAM_DEV_UNCONFIGURED) == 0) {
5362 MD5Init(&softc->context);
5363 MD5Update(&softc->context, (unsigned char *)inq_buf,
5364 sizeof(struct scsi_inquiry_data));
5365 softc->flags |= PROBE_INQUIRY_CKSUM;
5366 if (periph->path->device->serial_num_len > 0) {
5367 MD5Update(&softc->context,
5368 periph->path->device->serial_num,
5369 periph->path->device->serial_num_len);
5370 softc->flags |= PROBE_SERIAL_CKSUM;
5372 MD5Final(softc->digest, &softc->context);
5375 if (softc->action == PROBE_INQUIRY)
5376 inquiry_len = SHORT_INQUIRY_LENGTH;
5378 inquiry_len = inq_buf->additional_length + 5;
5384 (u_int8_t *)inq_buf,
5389 /*timeout*/60 * 1000);
5392 case PROBE_MODE_SENSE:
5397 mode_buf_len = sizeof(struct scsi_mode_header_6)
5398 + sizeof(struct scsi_mode_blk_desc)
5399 + sizeof(struct scsi_control_page);
5400 mode_buf = malloc(mode_buf_len, M_TEMP, M_NOWAIT);
5401 if (mode_buf != NULL) {
5402 scsi_mode_sense(csio,
5407 SMS_PAGE_CTRL_CURRENT,
5408 SMS_CONTROL_MODE_PAGE,
5415 xpt_print_path(periph->path);
5416 printf("Unable to mode sense control page - malloc failure\n");
5417 softc->action = PROBE_SERIAL_NUM;
5420 case PROBE_SERIAL_NUM:
5422 struct scsi_vpd_unit_serial_number *serial_buf;
5423 struct cam_ed* device;
5426 device = periph->path->device;
5427 device->serial_num = NULL;
5428 device->serial_num_len = 0;
5430 if ((device->quirk->quirks & CAM_QUIRK_NOSERIAL) == 0)
5431 serial_buf = (struct scsi_vpd_unit_serial_number *)
5432 malloc(sizeof(*serial_buf), M_TEMP,
5435 if (serial_buf != NULL) {
5440 (u_int8_t *)serial_buf,
5441 sizeof(*serial_buf),
5443 SVPD_UNIT_SERIAL_NUMBER,
5445 /*timeout*/60 * 1000);
5449 * We'll have to do without, let our probedone
5450 * routine finish up for us.
5452 start_ccb->csio.data_ptr = NULL;
5453 probedone(periph, start_ccb);
5457 xpt_action(start_ccb);
5461 proberequestdefaultnegotiation(struct cam_periph *periph)
5463 struct ccb_trans_settings cts;
5465 xpt_setup_ccb(&cts.ccb_h, periph->path, /*priority*/1);
5466 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
5467 cts.flags = CCB_TRANS_USER_SETTINGS;
5468 xpt_action((union ccb *)&cts);
5469 cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
5470 cts.flags &= ~CCB_TRANS_USER_SETTINGS;
5471 cts.flags |= CCB_TRANS_CURRENT_SETTINGS;
5472 xpt_action((union ccb *)&cts);
5476 probedone(struct cam_periph *periph, union ccb *done_ccb)
5479 struct cam_path *path;
5482 CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("probedone\n"));
5484 softc = (probe_softc *)periph->softc;
5485 path = done_ccb->ccb_h.path;
5486 priority = done_ccb->ccb_h.pinfo.priority;
5488 switch (softc->action) {
5491 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
5493 if (cam_periph_error(done_ccb, 0,
5494 SF_NO_PRINT, NULL) == ERESTART)
5496 else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
5497 /* Don't wedge the queue */
5498 xpt_release_devq(done_ccb->ccb_h.path,
5502 softc->action = PROBE_INQUIRY;
5503 xpt_release_ccb(done_ccb);
5504 xpt_schedule(periph, priority);
5508 case PROBE_FULL_INQUIRY:
5510 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
5511 struct scsi_inquiry_data *inq_buf;
5512 u_int8_t periph_qual;
5514 path->device->flags |= CAM_DEV_INQUIRY_DATA_VALID;
5515 inq_buf = &path->device->inq_data;
5517 periph_qual = SID_QUAL(inq_buf);
5519 switch(periph_qual) {
5520 case SID_QUAL_LU_CONNECTED:
5525 * We conservatively request only
5526 * SHORT_INQUIRY_LEN bytes of inquiry
5527 * information during our first try
5528 * at sending an INQUIRY. If the device
5529 * has more information to give,
5530 * perform a second request specifying
5531 * the amount of information the device
5532 * is willing to give.
5534 alen = inq_buf->additional_length;
5535 if (softc->action == PROBE_INQUIRY
5536 && alen > (SHORT_INQUIRY_LENGTH - 5)) {
5537 softc->action = PROBE_FULL_INQUIRY;
5538 xpt_release_ccb(done_ccb);
5539 xpt_schedule(periph, priority);
5543 xpt_find_quirk(path->device);
5545 if ((inq_buf->flags & SID_CmdQue) != 0)
5546 softc->action = PROBE_MODE_SENSE;
5548 softc->action = PROBE_SERIAL_NUM;
5550 path->device->flags &= ~CAM_DEV_UNCONFIGURED;
5552 xpt_release_ccb(done_ccb);
5553 xpt_schedule(periph, priority);
5559 } else if (cam_periph_error(done_ccb, 0,
5560 done_ccb->ccb_h.target_lun > 0
5561 ? SF_RETRY_UA|SF_QUIET_IR
5563 &softc->saved_ccb) == ERESTART) {
5565 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
5566 /* Don't wedge the queue */
5567 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
5571 * If we get to this point, we got an error status back
5572 * from the inquiry and the error status doesn't require
5573 * automatically retrying the command. Therefore, the
5574 * inquiry failed. If we had inquiry information before
5575 * for this device, but this latest inquiry command failed,
5576 * the device has probably gone away. If this device isn't
5577 * already marked unconfigured, notify the peripheral
5578 * drivers that this device is no more.
5580 if ((path->device->flags & CAM_DEV_UNCONFIGURED) == 0)
5581 /* Send the async notification. */
5582 xpt_async(AC_LOST_DEVICE, path, NULL);
5584 xpt_release_ccb(done_ccb);
5587 case PROBE_MODE_SENSE:
5589 struct ccb_scsiio *csio;
5590 struct scsi_mode_header_6 *mode_hdr;
5592 csio = &done_ccb->csio;
5593 mode_hdr = (struct scsi_mode_header_6 *)csio->data_ptr;
5594 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
5595 struct scsi_control_page *page;
5598 offset = ((u_int8_t *)&mode_hdr[1])
5599 + mode_hdr->blk_desc_len;
5600 page = (struct scsi_control_page *)offset;
5601 path->device->queue_flags = page->queue_flags;
5602 } else if (cam_periph_error(done_ccb, 0,
5603 SF_RETRY_UA|SF_NO_PRINT,
5604 &softc->saved_ccb) == ERESTART) {
5606 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
5607 /* Don't wedge the queue */
5608 xpt_release_devq(done_ccb->ccb_h.path,
5609 /*count*/1, /*run_queue*/TRUE);
5611 xpt_release_ccb(done_ccb);
5612 free(mode_hdr, M_TEMP);
5613 softc->action = PROBE_SERIAL_NUM;
5614 xpt_schedule(periph, priority);
5617 case PROBE_SERIAL_NUM:
5619 struct ccb_scsiio *csio;
5620 struct scsi_vpd_unit_serial_number *serial_buf;
5627 csio = &done_ccb->csio;
5628 priority = done_ccb->ccb_h.pinfo.priority;
5630 (struct scsi_vpd_unit_serial_number *)csio->data_ptr;
5632 /* Clean up from previous instance of this device */
5633 if (path->device->serial_num != NULL) {
5634 free(path->device->serial_num, M_DEVBUF);
5635 path->device->serial_num = NULL;
5636 path->device->serial_num_len = 0;
5639 if (serial_buf == NULL) {
5641 * Don't process the command as it was never sent
5643 } else if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP
5644 && (serial_buf->length > 0)) {
5647 path->device->serial_num =
5648 (u_int8_t *)malloc((serial_buf->length + 1),
5649 M_DEVBUF, M_NOWAIT);
5650 if (path->device->serial_num != NULL) {
5651 bcopy(serial_buf->serial_num,
5652 path->device->serial_num,
5653 serial_buf->length);
5654 path->device->serial_num_len =
5656 path->device->serial_num[serial_buf->length]
5659 } else if (cam_periph_error(done_ccb, 0,
5660 SF_RETRY_UA|SF_NO_PRINT,
5661 &softc->saved_ccb) == ERESTART) {
5663 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
5664 /* Don't wedge the queue */
5665 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
5670 * Let's see if we have seen this device before.
5672 if ((softc->flags & PROBE_INQUIRY_CKSUM) != 0) {
5674 u_int8_t digest[16];
5679 (unsigned char *)&path->device->inq_data,
5680 sizeof(struct scsi_inquiry_data));
5683 MD5Update(&context, serial_buf->serial_num,
5684 serial_buf->length);
5686 MD5Final(digest, &context);
5687 if (bcmp(softc->digest, digest, 16) == 0)
5691 * XXX Do we need to do a TUR in order to ensure
5692 * that the device really hasn't changed???
5695 && ((softc->flags & PROBE_NO_ANNOUNCE) == 0))
5696 xpt_async(AC_LOST_DEVICE, path, NULL);
5698 if (serial_buf != NULL)
5699 free(serial_buf, M_TEMP);
5703 * Now that we have all the necessary
5704 * information to safely perform transfer
5705 * negotiations... Controllers don't perform
5706 * any negotiation or tagged queuing until
5707 * after the first XPT_SET_TRAN_SETTINGS ccb is
5708 * received. So, on a new device, just retreive
5709 * the user settings, and set them as the current
5710 * settings to set the device up.
5712 proberequestdefaultnegotiation(periph);
5713 xpt_release_ccb(done_ccb);
5716 * Perform a TUR to allow the controller to
5717 * perform any necessary transfer negotiation.
5719 softc->action = PROBE_TUR_FOR_NEGOTIATION;
5720 xpt_schedule(periph, priority);
5723 xpt_release_ccb(done_ccb);
5726 case PROBE_TUR_FOR_NEGOTIATION:
5727 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
5728 /* Don't wedge the queue */
5729 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
5733 path->device->flags &= ~CAM_DEV_UNCONFIGURED;
5735 if ((softc->flags & PROBE_NO_ANNOUNCE) == 0) {
5736 /* Inform the XPT that a new device has been found */
5737 done_ccb->ccb_h.func_code = XPT_GDEV_TYPE;
5738 xpt_action(done_ccb);
5740 xpt_async(AC_FOUND_DEVICE, xpt_periph->path, done_ccb);
5742 xpt_release_ccb(done_ccb);
5745 done_ccb = (union ccb *)TAILQ_FIRST(&softc->request_ccbs);
5746 TAILQ_REMOVE(&softc->request_ccbs, &done_ccb->ccb_h, periph_links.tqe);
5747 done_ccb->ccb_h.status = CAM_REQ_CMP;
5749 if (TAILQ_FIRST(&softc->request_ccbs) == NULL) {
5750 cam_periph_invalidate(periph);
5751 cam_periph_release(periph);
5753 probeschedule(periph);
5758 probecleanup(struct cam_periph *periph)
5760 free(periph->softc, M_TEMP);
5764 xpt_find_quirk(struct cam_ed *device)
5768 match = cam_quirkmatch((caddr_t)&device->inq_data,
5769 (caddr_t)xpt_quirk_table,
5770 sizeof(xpt_quirk_table)/sizeof(*xpt_quirk_table),
5771 sizeof(*xpt_quirk_table), scsi_inquiry_match);
5774 panic("xpt_find_quirk: device didn't match wildcard entry!!");
5776 device->quirk = (struct xpt_quirk_entry *)match;
5780 xpt_set_transfer_settings(struct ccb_trans_settings *cts, struct cam_ed *device,
5783 struct cam_sim *sim;
5786 sim = cts->ccb_h.path->bus->sim;
5787 if (async_update == FALSE) {
5788 struct scsi_inquiry_data *inq_data;
5789 struct ccb_pathinq cpi;
5790 struct ccb_trans_settings cur_cts;
5792 if (device == NULL) {
5793 cts->ccb_h.status = CAM_PATH_INVALID;
5794 xpt_done((union ccb *)cts);
5799 * Perform sanity checking against what the
5800 * controller and device can do.
5802 xpt_setup_ccb(&cpi.ccb_h, cts->ccb_h.path, /*priority*/1);
5803 cpi.ccb_h.func_code = XPT_PATH_INQ;
5804 xpt_action((union ccb *)&cpi);
5805 xpt_setup_ccb(&cur_cts.ccb_h, cts->ccb_h.path, /*priority*/1);
5806 cur_cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
5807 cur_cts.flags = CCB_TRANS_CURRENT_SETTINGS;
5808 xpt_action((union ccb *)&cur_cts);
5809 inq_data = &device->inq_data;
5811 /* Fill in any gaps in what the user gave us */
5812 if ((cts->valid & CCB_TRANS_SYNC_RATE_VALID) == 0)
5813 cts->sync_period = cur_cts.sync_period;
5814 if ((cts->valid & CCB_TRANS_SYNC_OFFSET_VALID) == 0)
5815 cts->sync_offset = cur_cts.sync_offset;
5816 if ((cts->valid & CCB_TRANS_BUS_WIDTH_VALID) == 0)
5817 cts->bus_width = cur_cts.bus_width;
5818 if ((cts->valid & CCB_TRANS_DISC_VALID) == 0) {
5819 cts->flags &= ~CCB_TRANS_DISC_ENB;
5820 cts->flags |= cur_cts.flags & CCB_TRANS_DISC_ENB;
5822 if ((cts->valid & CCB_TRANS_TQ_VALID) == 0) {
5823 cts->flags &= ~CCB_TRANS_TAG_ENB;
5824 cts->flags |= cur_cts.flags & CCB_TRANS_TAG_ENB;
5827 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0
5828 && (inq_data->flags & SID_Sync) == 0)
5829 || ((cpi.hba_inquiry & PI_SDTR_ABLE) == 0)
5830 || (cts->sync_offset == 0)
5831 || (cts->sync_period == 0)) {
5833 cts->sync_period = 0;
5834 cts->sync_offset = 0;
5835 } else if ((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0) {
5837 if ((inq_data->spi3data & SID_SPI_CLOCK_DT) == 0
5838 && cts->sync_period <= 0x9) {
5840 * Don't allow DT transmission rates if the
5841 * device does not support it.
5843 cts->sync_period = 0xa;
5845 if ((inq_data->spi3data & SID_SPI_IUS) == 0
5846 && cts->sync_period <= 0x8) {
5848 * Don't allow PACE transmission rates
5849 * if the device does support packetized
5852 cts->sync_period = 0x9;
5856 switch (cts->bus_width) {
5857 case MSG_EXT_WDTR_BUS_32_BIT:
5858 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0
5859 || (inq_data->flags & SID_WBus32) != 0)
5860 && (cpi.hba_inquiry & PI_WIDE_32) != 0)
5862 /* Fall Through to 16-bit */
5863 case MSG_EXT_WDTR_BUS_16_BIT:
5864 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0
5865 || (inq_data->flags & SID_WBus16) != 0)
5866 && (cpi.hba_inquiry & PI_WIDE_16) != 0) {
5867 cts->bus_width = MSG_EXT_WDTR_BUS_16_BIT;
5870 /* Fall Through to 8-bit */
5871 default: /* New bus width?? */
5872 case MSG_EXT_WDTR_BUS_8_BIT:
5873 /* All targets can do this */
5874 cts->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
5878 if ((cts->flags & CCB_TRANS_DISC_ENB) == 0) {
5880 * Can't tag queue without disconnection.
5882 cts->flags &= ~CCB_TRANS_TAG_ENB;
5883 cts->valid |= CCB_TRANS_TQ_VALID;
5886 if ((cpi.hba_inquiry & PI_TAG_ABLE) == 0
5887 || (inq_data->flags & SID_CmdQue) == 0
5888 || (device->queue_flags & SCP_QUEUE_DQUE) != 0
5889 || (device->quirk->mintags == 0)) {
5891 * Can't tag on hardware that doesn't support,
5892 * doesn't have it enabled, or has broken tag support.
5894 cts->flags &= ~CCB_TRANS_TAG_ENB;
5899 if ((cts->valid & CCB_TRANS_TQ_VALID) != 0) {
5903 * If we are transitioning from tags to no-tags or
5904 * vice-versa, we need to carefully freeze and restart
5905 * the queue so that we don't overlap tagged and non-tagged
5906 * commands. We also temporarily stop tags if there is
5907 * a change in transfer negotiation settings to allow
5908 * "tag-less" negotiation.
5910 if ((device->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
5911 || (device->inq_flags & SID_CmdQue) != 0)
5912 device_tagenb = TRUE;
5914 device_tagenb = FALSE;
5916 if (((cts->flags & CCB_TRANS_TAG_ENB) != 0
5917 && device_tagenb == FALSE)
5918 || ((cts->flags & CCB_TRANS_TAG_ENB) == 0
5919 && device_tagenb == TRUE)) {
5921 if ((cts->flags & CCB_TRANS_TAG_ENB) != 0) {
5923 * Delay change to use tags until after a
5924 * few commands have gone to this device so
5925 * the controller has time to perform transfer
5926 * negotiations without tagged messages getting
5929 device->tag_delay_count = CAM_TAG_DELAY_COUNT;
5930 device->flags |= CAM_DEV_TAG_AFTER_COUNT;
5932 xpt_freeze_devq(cts->ccb_h.path, /*count*/1);
5934 device->inq_flags &= ~SID_CmdQue;
5935 xpt_dev_ccbq_resize(cts->ccb_h.path,
5936 sim->max_dev_openings);
5937 device->flags &= ~CAM_DEV_TAG_AFTER_COUNT;
5938 device->tag_delay_count = 0;
5943 if (async_update == FALSE) {
5945 * If we are currently performing tagged transactions to
5946 * this device and want to change its negotiation parameters,
5947 * go non-tagged for a bit to give the controller a chance to
5948 * negotiate unhampered by tag messages.
5950 if ((device->inq_flags & SID_CmdQue) != 0
5951 && (cts->flags & (CCB_TRANS_SYNC_RATE_VALID|
5952 CCB_TRANS_SYNC_OFFSET_VALID|
5953 CCB_TRANS_BUS_WIDTH_VALID)) != 0)
5954 xpt_toggle_tags(cts->ccb_h.path);
5956 (*(sim->sim_action))(sim, (union ccb *)cts);
5960 struct ccb_relsim crs;
5962 xpt_setup_ccb(&crs.ccb_h, cts->ccb_h.path,
5964 crs.ccb_h.func_code = XPT_REL_SIMQ;
5965 crs.release_flags = RELSIM_RELEASE_AFTER_QEMPTY;
5967 = crs.release_timeout
5970 xpt_action((union ccb *)&crs);
5975 xpt_toggle_tags(struct cam_path *path)
5980 * Give controllers a chance to renegotiate
5981 * before starting tag operations. We
5982 * "toggle" tagged queuing off then on
5983 * which causes the tag enable command delay
5984 * counter to come into effect.
5987 if ((dev->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
5988 || ((dev->inq_flags & SID_CmdQue) != 0
5989 && (dev->inq_flags & (SID_Sync|SID_WBus16|SID_WBus32)) != 0)) {
5990 struct ccb_trans_settings cts;
5992 xpt_setup_ccb(&cts.ccb_h, path, 1);
5994 cts.valid = CCB_TRANS_TQ_VALID;
5995 xpt_set_transfer_settings(&cts, path->device,
5996 /*async_update*/TRUE);
5997 cts.flags = CCB_TRANS_TAG_ENB;
5998 xpt_set_transfer_settings(&cts, path->device,
5999 /*async_update*/TRUE);
6004 xpt_start_tags(struct cam_path *path)
6006 struct ccb_relsim crs;
6007 struct cam_ed *device;
6008 struct cam_sim *sim;
6011 device = path->device;
6012 sim = path->bus->sim;
6013 device->flags &= ~CAM_DEV_TAG_AFTER_COUNT;
6014 xpt_freeze_devq(path, /*count*/1);
6015 device->inq_flags |= SID_CmdQue;
6016 newopenings = min(device->quirk->maxtags, sim->max_tagged_dev_openings);
6017 xpt_dev_ccbq_resize(path, newopenings);
6018 xpt_setup_ccb(&crs.ccb_h, path, /*priority*/1);
6019 crs.ccb_h.func_code = XPT_REL_SIMQ;
6020 crs.release_flags = RELSIM_RELEASE_AFTER_QEMPTY;
6022 = crs.release_timeout
6025 xpt_action((union ccb *)&crs);
6028 static int busses_to_config;
6029 static int busses_to_reset;
6032 xptconfigbuscountfunc(struct cam_eb *bus, void *arg)
6034 if (bus->path_id != CAM_XPT_PATH_ID) {
6035 struct cam_path path;
6036 struct ccb_pathinq cpi;
6040 xpt_compile_path(&path, NULL, bus->path_id,
6041 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
6042 xpt_setup_ccb(&cpi.ccb_h, &path, /*priority*/1);
6043 cpi.ccb_h.func_code = XPT_PATH_INQ;
6044 xpt_action((union ccb *)&cpi);
6045 can_negotiate = cpi.hba_inquiry;
6046 can_negotiate &= (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE);
6047 if ((cpi.hba_misc & PIM_NOBUSRESET) == 0
6050 xpt_release_path(&path);
6057 xptconfigfunc(struct cam_eb *bus, void *arg)
6059 struct cam_path *path;
6060 union ccb *work_ccb;
6062 if (bus->path_id != CAM_XPT_PATH_ID) {
6066 work_ccb = xpt_alloc_ccb();
6067 if ((status = xpt_create_path(&path, xpt_periph, bus->path_id,
6068 CAM_TARGET_WILDCARD,
6069 CAM_LUN_WILDCARD)) !=CAM_REQ_CMP){
6070 printf("xptconfigfunc: xpt_create_path failed with "
6071 "status %#x for bus %d\n", status, bus->path_id);
6072 printf("xptconfigfunc: halting bus configuration\n");
6073 xpt_free_ccb(work_ccb);
6075 xpt_finishconfig(xpt_periph, NULL);
6078 xpt_setup_ccb(&work_ccb->ccb_h, path, /*priority*/1);
6079 work_ccb->ccb_h.func_code = XPT_PATH_INQ;
6080 xpt_action(work_ccb);
6081 if (work_ccb->ccb_h.status != CAM_REQ_CMP) {
6082 printf("xptconfigfunc: CPI failed on bus %d "
6083 "with status %d\n", bus->path_id,
6084 work_ccb->ccb_h.status);
6085 xpt_finishconfig(xpt_periph, work_ccb);
6089 can_negotiate = work_ccb->cpi.hba_inquiry;
6090 can_negotiate &= (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE);
6091 if ((work_ccb->cpi.hba_misc & PIM_NOBUSRESET) == 0
6092 && (can_negotiate != 0)) {
6093 xpt_setup_ccb(&work_ccb->ccb_h, path, /*priority*/1);
6094 work_ccb->ccb_h.func_code = XPT_RESET_BUS;
6095 work_ccb->ccb_h.cbfcnp = NULL;
6096 CAM_DEBUG(path, CAM_DEBUG_SUBTRACE,
6097 ("Resetting Bus\n"));
6098 xpt_action(work_ccb);
6099 xpt_finishconfig(xpt_periph, work_ccb);
6101 /* Act as though we performed a successful BUS RESET */
6102 work_ccb->ccb_h.func_code = XPT_RESET_BUS;
6103 xpt_finishconfig(xpt_periph, work_ccb);
6111 xpt_config(void *arg)
6113 /* Now that interrupts are enabled, go find our devices */
6116 /* Setup debugging flags and path */
6117 #ifdef CAM_DEBUG_FLAGS
6118 cam_dflags = CAM_DEBUG_FLAGS;
6119 #else /* !CAM_DEBUG_FLAGS */
6120 cam_dflags = CAM_DEBUG_NONE;
6121 #endif /* CAM_DEBUG_FLAGS */
6122 #ifdef CAM_DEBUG_BUS
6123 if (cam_dflags != CAM_DEBUG_NONE) {
6124 if (xpt_create_path(&cam_dpath, xpt_periph,
6125 CAM_DEBUG_BUS, CAM_DEBUG_TARGET,
6126 CAM_DEBUG_LUN) != CAM_REQ_CMP) {
6127 printf("xpt_config: xpt_create_path() failed for debug"
6128 " target %d:%d:%d, debugging disabled\n",
6129 CAM_DEBUG_BUS, CAM_DEBUG_TARGET, CAM_DEBUG_LUN);
6130 cam_dflags = CAM_DEBUG_NONE;
6134 #else /* !CAM_DEBUG_BUS */
6136 #endif /* CAM_DEBUG_BUS */
6137 #endif /* CAMDEBUG */
6140 * Scan all installed busses.
6142 xpt_for_all_busses(xptconfigbuscountfunc, NULL);
6144 if (busses_to_config == 0) {
6145 /* Call manually because we don't have any busses */
6146 xpt_finishconfig(xpt_periph, NULL);
6148 if (busses_to_reset > 0 && SCSI_DELAY >= 2000) {
6149 printf("Waiting %d seconds for SCSI "
6150 "devices to settle\n", SCSI_DELAY/1000);
6152 xpt_for_all_busses(xptconfigfunc, NULL);
6157 * If the given device only has one peripheral attached to it, and if that
6158 * peripheral is the passthrough driver, announce it. This insures that the
6159 * user sees some sort of announcement for every peripheral in their system.
6162 xptpassannouncefunc(struct cam_ed *device, void *arg)
6164 struct cam_periph *periph;
6167 for (periph = SLIST_FIRST(&device->periphs), i = 0; periph != NULL;
6168 periph = SLIST_NEXT(periph, periph_links), i++);
6170 periph = SLIST_FIRST(&device->periphs);
6172 && (strncmp(periph->periph_name, "pass", 4) == 0))
6173 xpt_announce_periph(periph, NULL);
6179 xpt_finishconfig(struct cam_periph *periph, union ccb *done_ccb)
6181 struct periph_driver **p_drv;
6184 if (done_ccb != NULL) {
6185 CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE,
6186 ("xpt_finishconfig\n"));
6187 switch(done_ccb->ccb_h.func_code) {
6189 if (done_ccb->ccb_h.status == CAM_REQ_CMP) {
6190 done_ccb->ccb_h.func_code = XPT_SCAN_BUS;
6191 done_ccb->ccb_h.cbfcnp = xpt_finishconfig;
6192 xpt_action(done_ccb);
6198 xpt_free_path(done_ccb->ccb_h.path);
6204 if (busses_to_config == 0) {
6205 /* Register all the peripheral drivers */
6206 /* XXX This will have to change when we have loadable modules */
6207 p_drv = (struct periph_driver **)periphdriver_set.ls_items;
6208 for (i = 0; p_drv[i] != NULL; i++) {
6209 (*p_drv[i]->init)();
6213 * Check for devices with no "standard" peripheral driver
6214 * attached. For any devices like that, announce the
6215 * passthrough driver so the user will see something.
6217 xpt_for_all_devices(xptpassannouncefunc, NULL);
6219 /* Release our hook so that the boot can continue. */
6220 config_intrhook_disestablish(xpt_config_hook);
6221 free(xpt_config_hook, M_TEMP);
6222 xpt_config_hook = NULL;
6224 if (done_ccb != NULL)
6225 xpt_free_ccb(done_ccb);
6229 xptaction(struct cam_sim *sim, union ccb *work_ccb)
6231 CAM_DEBUG(work_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("xptaction\n"));
6233 switch (work_ccb->ccb_h.func_code) {
6234 /* Common cases first */
6235 case XPT_PATH_INQ: /* Path routing inquiry */
6237 struct ccb_pathinq *cpi;
6239 cpi = &work_ccb->cpi;
6240 cpi->version_num = 1; /* XXX??? */
6241 cpi->hba_inquiry = 0;
6242 cpi->target_sprt = 0;
6244 cpi->hba_eng_cnt = 0;
6245 cpi->max_target = 0;
6247 cpi->initiator_id = 0;
6248 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
6249 strncpy(cpi->hba_vid, "", HBA_IDLEN);
6250 strncpy(cpi->dev_name, sim->sim_name, DEV_IDLEN);
6251 cpi->unit_number = sim->unit_number;
6252 cpi->bus_id = sim->bus_id;
6253 cpi->base_transfer_speed = 0;
6254 cpi->ccb_h.status = CAM_REQ_CMP;
6259 work_ccb->ccb_h.status = CAM_REQ_INVALID;
6266 * The xpt as a "controller" has no interrupt sources, so polling
6270 xptpoll(struct cam_sim *sim)
6275 * Should only be called by the machine interrupt dispatch routines,
6276 * so put these prototypes here instead of in the header.
6292 camisr(cam_isrq_t *queue)
6295 struct ccb_hdr *ccb_h;
6298 while ((ccb_h = TAILQ_FIRST(queue)) != NULL) {
6301 TAILQ_REMOVE(queue, ccb_h, sim_links.tqe);
6302 ccb_h->pinfo.index = CAM_UNQUEUED_INDEX;
6305 CAM_DEBUG(ccb_h->path, CAM_DEBUG_TRACE,
6310 if (ccb_h->flags & CAM_HIGH_POWER) {
6311 struct highpowerlist *hphead;
6312 struct cam_ed *device;
6313 union ccb *send_ccb;
6315 hphead = &highpowerq;
6317 send_ccb = (union ccb *)STAILQ_FIRST(hphead);
6320 * Increment the count since this command is done.
6325 * Any high powered commands queued up?
6327 if (send_ccb != NULL) {
6328 device = send_ccb->ccb_h.path->device;
6330 STAILQ_REMOVE_HEAD(hphead, xpt_links.stqe);
6332 xpt_release_devq(send_ccb->ccb_h.path,
6333 /*count*/1, /*runqueue*/TRUE);
6336 if ((ccb_h->func_code & XPT_FC_USER_CCB) == 0) {
6339 dev = ccb_h->path->device;
6342 cam_ccbq_ccb_done(&dev->ccbq, (union ccb *)ccb_h);
6344 ccb_h->path->bus->sim->devq->send_active--;
6345 ccb_h->path->bus->sim->devq->send_openings++;
6348 if ((dev->flags & CAM_DEV_REL_ON_COMPLETE) != 0
6349 || ((dev->flags & CAM_DEV_REL_ON_QUEUE_EMPTY) != 0
6350 && (dev->ccbq.dev_active == 0))) {
6352 xpt_release_devq(ccb_h->path, /*count*/1,
6356 if ((dev->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
6357 && (--dev->tag_delay_count == 0))
6358 xpt_start_tags(ccb_h->path);
6360 if ((dev->ccbq.queue.entries > 0)
6361 && (dev->qfrozen_cnt == 0)
6362 && (device_is_send_queued(dev) == 0)) {
6363 runq = xpt_schedule_dev_sendq(ccb_h->path->bus,
6368 if (ccb_h->status & CAM_RELEASE_SIMQ) {
6369 xpt_release_simq(ccb_h->path->bus->sim,
6371 ccb_h->status &= ~CAM_RELEASE_SIMQ;
6375 if ((ccb_h->flags & CAM_DEV_QFRZDIS)
6376 && (ccb_h->status & CAM_DEV_QFRZN)) {
6377 xpt_release_devq(ccb_h->path, /*count*/1,
6379 ccb_h->status &= ~CAM_DEV_QFRZN;
6381 xpt_run_dev_sendq(ccb_h->path->bus);
6384 /* Call the peripheral driver's callback */
6385 (*ccb_h->cbfcnp)(ccb_h->path->periph, (union ccb *)ccb_h);
6387 /* Raise IPL for while test */