2 * Implementation of the Common Access Method Transport (XPT) layer.
4 * Copyright (c) 1997, 1998, 1999 Justin T. Gibbs.
5 * Copyright (c) 1997, 1998, 1999 Kenneth D. Merry.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions, and the following disclaimer,
13 * without modification, immediately at the beginning of the file.
14 * 2. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
21 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * $FreeBSD: src/sys/cam/cam_xpt.c,v 1.80.2.18 2002/12/09 17:31:55 gibbs Exp $
30 * $DragonFly: src/sys/bus/cam/cam_xpt.c,v 1.9 2004/01/30 05:42:09 dillon Exp $
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/types.h>
35 #include <sys/malloc.h>
36 #include <sys/kernel.h>
39 #include <sys/fcntl.h>
41 #include <sys/devicestat.h>
42 #include <sys/interrupt.h>
46 #include <pc98/pc98/pc98_machdep.h> /* geometry translation */
49 #include <machine/clock.h>
50 #include <machine/ipl.h>
54 #include "cam_periph.h"
57 #include "cam_xpt_sim.h"
58 #include "cam_xpt_periph.h"
59 #include "cam_debug.h"
61 #include "scsi/scsi_all.h"
62 #include "scsi/scsi_message.h"
63 #include "scsi/scsi_pass.h"
66 /* Datastructures internal to the xpt layer */
69 * Definition of an async handler callback block. These are used to add
70 * SIMs and peripherals to the async callback lists.
73 SLIST_ENTRY(async_node) links;
74 u_int32_t event_enable; /* Async Event enables */
75 void (*callback)(void *arg, u_int32_t code,
76 struct cam_path *path, void *args);
80 SLIST_HEAD(async_list, async_node);
81 SLIST_HEAD(periph_list, cam_periph);
82 static STAILQ_HEAD(highpowerlist, ccb_hdr) highpowerq;
85 * This is the maximum number of high powered commands (e.g. start unit)
86 * that can be outstanding at a particular time.
88 #ifndef CAM_MAX_HIGHPOWER
89 #define CAM_MAX_HIGHPOWER 4
92 /* number of high powered commands that can go through right now */
93 static int num_highpower = CAM_MAX_HIGHPOWER;
96 * Structure for queueing a device in a run queue.
97 * There is one run queue for allocating new ccbs,
98 * and another for sending ccbs to the controller.
100 struct cam_ed_qinfo {
102 struct cam_ed *device;
106 * The CAM EDT (Existing Device Table) contains the device information for
107 * all devices for all busses in the system. The table contains a
108 * cam_ed structure for each device on the bus.
111 TAILQ_ENTRY(cam_ed) links;
112 struct cam_ed_qinfo alloc_ccb_entry;
113 struct cam_ed_qinfo send_ccb_entry;
114 struct cam_et *target;
117 * Queue of type drivers wanting to do
118 * work on this device.
120 struct cam_ccbq ccbq; /* Queue of pending ccbs */
121 struct async_list asyncs; /* Async callback info for this B/T/L */
122 struct periph_list periphs; /* All attached devices */
123 u_int generation; /* Generation number */
124 struct cam_periph *owner; /* Peripheral driver's ownership tag */
125 struct xpt_quirk_entry *quirk; /* Oddities about this device */
126 /* Storage for the inquiry data */
127 struct scsi_inquiry_data inq_data;
128 u_int8_t inq_flags; /*
129 * Current settings for inquiry flags.
130 * This allows us to override settings
131 * like disconnection and tagged
132 * queuing for a device.
134 u_int8_t queue_flags; /* Queue flags from the control page */
135 u_int8_t serial_num_len;
136 u_int8_t *serial_num;
137 u_int32_t qfrozen_cnt;
139 #define CAM_DEV_UNCONFIGURED 0x01
140 #define CAM_DEV_REL_TIMEOUT_PENDING 0x02
141 #define CAM_DEV_REL_ON_COMPLETE 0x04
142 #define CAM_DEV_REL_ON_QUEUE_EMPTY 0x08
143 #define CAM_DEV_RESIZE_QUEUE_NEEDED 0x10
144 #define CAM_DEV_TAG_AFTER_COUNT 0x20
145 #define CAM_DEV_INQUIRY_DATA_VALID 0x40
146 u_int32_t tag_delay_count;
147 #define CAM_TAG_DELAY_COUNT 5
149 struct callout_handle c_handle;
153 * Each target is represented by an ET (Existing Target). These
154 * entries are created when a target is successfully probed with an
155 * identify, and removed when a device fails to respond after a number
156 * of retries, or a bus rescan finds the device missing.
159 TAILQ_HEAD(, cam_ed) ed_entries;
160 TAILQ_ENTRY(cam_et) links;
162 target_id_t target_id;
165 struct timeval last_reset; /* uptime of last reset */
169 * Each bus is represented by an EB (Existing Bus). These entries
170 * are created by calls to xpt_bus_register and deleted by calls to
171 * xpt_bus_deregister.
174 TAILQ_HEAD(, cam_et) et_entries;
175 TAILQ_ENTRY(cam_eb) links;
178 struct timeval last_reset; /* uptime of last reset */
180 #define CAM_EB_RUNQ_SCHEDULED 0x01
186 struct cam_periph *periph;
188 struct cam_et *target;
189 struct cam_ed *device;
192 struct xpt_quirk_entry {
193 struct scsi_inquiry_pattern inq_pat;
195 #define CAM_QUIRK_NOLUNS 0x01
196 #define CAM_QUIRK_NOSERIAL 0x02
197 #define CAM_QUIRK_HILUNS 0x04
201 #define CAM_SCSI2_MAXLUN 8
209 u_int32_t generation;
212 static const char quantum[] = "QUANTUM";
213 static const char sony[] = "SONY";
214 static const char west_digital[] = "WDIGTL";
215 static const char samsung[] = "SAMSUNG";
216 static const char seagate[] = "SEAGATE";
217 static const char microp[] = "MICROP";
219 static struct xpt_quirk_entry xpt_quirk_table[] =
222 /* Reports QUEUE FULL for temporary resource shortages */
223 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP39100*", "*" },
224 /*quirks*/0, /*mintags*/24, /*maxtags*/32
227 /* Reports QUEUE FULL for temporary resource shortages */
228 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP34550*", "*" },
229 /*quirks*/0, /*mintags*/24, /*maxtags*/32
232 /* Reports QUEUE FULL for temporary resource shortages */
233 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP32275*", "*" },
234 /*quirks*/0, /*mintags*/24, /*maxtags*/32
237 /* Broken tagged queuing drive */
238 { T_DIRECT, SIP_MEDIA_FIXED, microp, "4421-07*", "*" },
239 /*quirks*/0, /*mintags*/0, /*maxtags*/0
242 /* Broken tagged queuing drive */
243 { T_DIRECT, SIP_MEDIA_FIXED, "HP", "C372*", "*" },
244 /*quirks*/0, /*mintags*/0, /*maxtags*/0
247 /* Broken tagged queuing drive */
248 { T_DIRECT, SIP_MEDIA_FIXED, microp, "3391*", "x43h" },
249 /*quirks*/0, /*mintags*/0, /*maxtags*/0
253 * Unfortunately, the Quantum Atlas III has the same
254 * problem as the Atlas II drives above.
255 * Reported by: "Johan Granlund" <johan@granlund.nu>
257 * For future reference, the drive with the problem was:
258 * QUANTUM QM39100TD-SW N1B0
260 * It's possible that Quantum will fix the problem in later
261 * firmware revisions. If that happens, the quirk entry
262 * will need to be made specific to the firmware revisions
266 /* Reports QUEUE FULL for temporary resource shortages */
267 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "QM39100*", "*" },
268 /*quirks*/0, /*mintags*/24, /*maxtags*/32
272 * 18 Gig Atlas III, same problem as the 9G version.
273 * Reported by: Andre Albsmeier
274 * <andre.albsmeier@mchp.siemens.de>
276 * For future reference, the drive with the problem was:
277 * QUANTUM QM318000TD-S N491
279 /* Reports QUEUE FULL for temporary resource shortages */
280 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "QM318000*", "*" },
281 /*quirks*/0, /*mintags*/24, /*maxtags*/32
285 * Broken tagged queuing drive
286 * Reported by: Bret Ford <bford@uop.cs.uop.edu>
287 * and: Martin Renters <martin@tdc.on.ca>
289 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST410800*", "71*" },
290 /*quirks*/0, /*mintags*/0, /*maxtags*/0
293 * The Seagate Medalist Pro drives have very poor write
294 * performance with anything more than 2 tags.
296 * Reported by: Paul van der Zwan <paulz@trantor.xs4all.nl>
297 * Drive: <SEAGATE ST36530N 1444>
299 * Reported by: Jeremy Lea <reg@shale.csir.co.za>
300 * Drive: <SEAGATE ST34520W 1281>
302 * No one has actually reported that the 9G version
303 * (ST39140*) of the Medalist Pro has the same problem, but
304 * we're assuming that it does because the 4G and 6.5G
305 * versions of the drive are broken.
308 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST34520*", "*"},
309 /*quirks*/0, /*mintags*/2, /*maxtags*/2
312 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST36530*", "*"},
313 /*quirks*/0, /*mintags*/2, /*maxtags*/2
316 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST39140*", "*"},
317 /*quirks*/0, /*mintags*/2, /*maxtags*/2
321 * Slow when tagged queueing is enabled. Write performance
322 * steadily drops off with more and more concurrent
323 * transactions. Best sequential write performance with
324 * tagged queueing turned off and write caching turned on.
327 * Submitted by: Hideaki Okada <hokada@isl.melco.co.jp>
328 * Drive: DCAS-34330 w/ "S65A" firmware.
330 * The drive with the problem had the "S65A" firmware
331 * revision, and has also been reported (by Stephen J.
332 * Roznowski <sjr@home.net>) for a drive with the "S61A"
335 * Although no one has reported problems with the 2 gig
336 * version of the DCAS drive, the assumption is that it
337 * has the same problems as the 4 gig version. Therefore
338 * this quirk entries disables tagged queueing for all
341 { T_DIRECT, SIP_MEDIA_FIXED, "IBM", "DCAS*", "*" },
342 /*quirks*/0, /*mintags*/0, /*maxtags*/0
345 /* Broken tagged queuing drive */
346 { T_DIRECT, SIP_MEDIA_REMOVABLE, "iomega", "jaz*", "*" },
347 /*quirks*/0, /*mintags*/0, /*maxtags*/0
350 /* Broken tagged queuing drive */
351 { T_DIRECT, SIP_MEDIA_FIXED, "CONNER", "CFP2107*", "*" },
352 /*quirks*/0, /*mintags*/0, /*maxtags*/0
356 * Broken tagged queuing drive.
358 * NAKAJI Hiroyuki <nakaji@zeisei.dpri.kyoto-u.ac.jp>
361 { T_DIRECT, SIP_MEDIA_FIXED, samsung, "WN34324U*", "*" },
362 /*quirks*/0, /*mintags*/0, /*maxtags*/0
366 * Slow when tagged queueing is enabled. (1.5MB/sec versus
368 * Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
369 * Best performance with these drives is achieved with
370 * tagged queueing turned off, and write caching turned on.
372 { T_DIRECT, SIP_MEDIA_FIXED, west_digital, "WDE*", "*" },
373 /*quirks*/0, /*mintags*/0, /*maxtags*/0
377 * Slow when tagged queueing is enabled. (1.5MB/sec versus
379 * Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
380 * Best performance with these drives is achieved with
381 * tagged queueing turned off, and write caching turned on.
383 { T_DIRECT, SIP_MEDIA_FIXED, west_digital, "ENTERPRISE", "*" },
384 /*quirks*/0, /*mintags*/0, /*maxtags*/0
388 * Doesn't handle queue full condition correctly,
389 * so we need to limit maxtags to what the device
390 * can handle instead of determining this automatically.
392 { T_DIRECT, SIP_MEDIA_FIXED, samsung, "WN321010S*", "*" },
393 /*quirks*/0, /*mintags*/2, /*maxtags*/32
396 /* Really only one LUN */
397 { T_ENCLOSURE, SIP_MEDIA_FIXED, "SUN", "SENA", "*" },
398 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
401 /* I can't believe we need a quirk for DPT volumes. */
402 { T_ANY, SIP_MEDIA_FIXED|SIP_MEDIA_REMOVABLE, "DPT", "*", "*" },
403 CAM_QUIRK_NOSERIAL|CAM_QUIRK_NOLUNS,
404 /*mintags*/0, /*maxtags*/255
408 * Many Sony CDROM drives don't like multi-LUN probing.
410 { T_CDROM, SIP_MEDIA_REMOVABLE, sony, "CD-ROM CDU*", "*" },
411 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
415 * This drive doesn't like multiple LUN probing.
416 * Submitted by: Parag Patel <parag@cgt.com>
418 { T_WORM, SIP_MEDIA_REMOVABLE, sony, "CD-R CDU9*", "*" },
419 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
422 { T_WORM, SIP_MEDIA_REMOVABLE, "YAMAHA", "CDR100*", "*" },
423 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
427 * The 8200 doesn't like multi-lun probing, and probably
428 * don't like serial number requests either.
431 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "EXABYTE",
434 CAM_QUIRK_NOSERIAL|CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
438 * Let's try the same as above, but for a drive that says
439 * it's an IPL-6860 but is actually an EXB 8200.
442 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "EXABYTE",
445 CAM_QUIRK_NOSERIAL|CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
449 * These Hitachi drives don't like multi-lun probing.
450 * The PR submitter has a DK319H, but says that the Linux
451 * kernel has a similar work-around for the DK312 and DK314,
452 * so all DK31* drives are quirked here.
454 * Submitted by: Paul Haddad <paul@pth.com>
456 { T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "DK31*", "*" },
457 CAM_QUIRK_NOLUNS, /*mintags*/2, /*maxtags*/255
461 * This old revision of the TDC3600 is also SCSI-1, and
462 * hangs upon serial number probing.
465 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
468 CAM_QUIRK_NOSERIAL, /*mintags*/0, /*maxtags*/0
472 * Would repond to all LUNs if asked for.
475 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "CALIPER",
478 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
482 * Would repond to all LUNs if asked for.
485 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY",
488 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
491 /* Submitted by: Matthew Dodd <winter@jurai.net> */
492 { T_PROCESSOR, SIP_MEDIA_FIXED, "Cabletrn", "EA41*", "*" },
493 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
496 /* Submitted by: Matthew Dodd <winter@jurai.net> */
497 { T_PROCESSOR, SIP_MEDIA_FIXED, "CABLETRN", "EA41*", "*" },
498 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
501 /* TeraSolutions special settings for TRC-22 RAID */
502 { T_DIRECT, SIP_MEDIA_FIXED, "TERASOLU", "TRC-22", "*" },
503 /*quirks*/0, /*mintags*/55, /*maxtags*/255
506 /* Veritas Storage Appliance */
507 { T_DIRECT, SIP_MEDIA_FIXED, "VERITAS", "*", "*" },
508 CAM_QUIRK_HILUNS, /*mintags*/2, /*maxtags*/1024
512 * Would respond to all LUNs. Device type and removable
513 * flag are jumper-selectable.
515 { T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED, "MaxOptix",
518 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
521 /* Default tagged queuing parameters for all devices */
523 T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED,
524 /*vendor*/"*", /*product*/"*", /*revision*/"*"
526 /*quirks*/0, /*mintags*/2, /*maxtags*/255
530 static const int xpt_quirk_table_size =
531 sizeof(xpt_quirk_table) / sizeof(*xpt_quirk_table);
535 DM_RET_FLAG_MASK = 0x0f,
538 DM_RET_DESCEND = 0x20,
540 DM_RET_ACTION_MASK = 0xf0
548 } xpt_traverse_depth;
550 struct xpt_traverse_config {
551 xpt_traverse_depth depth;
556 typedef int xpt_busfunc_t (struct cam_eb *bus, void *arg);
557 typedef int xpt_targetfunc_t (struct cam_et *target, void *arg);
558 typedef int xpt_devicefunc_t (struct cam_ed *device, void *arg);
559 typedef int xpt_periphfunc_t (struct cam_periph *periph, void *arg);
560 typedef int xpt_pdrvfunc_t (struct periph_driver **pdrv, void *arg);
562 /* Transport layer configuration information */
563 static struct xpt_softc xsoftc;
565 /* Queues for our software interrupt handler */
566 typedef TAILQ_HEAD(cam_isrq, ccb_hdr) cam_isrq_t;
567 static cam_isrq_t cam_bioq;
568 static cam_isrq_t cam_netq;
570 /* "Pool" of inactive ccbs managed by xpt_alloc_ccb and xpt_free_ccb */
571 static SLIST_HEAD(,ccb_hdr) ccb_freeq;
572 static u_int xpt_max_ccbs; /*
573 * Maximum size of ccb pool. Modified as
574 * devices are added/removed or have their
575 * opening counts changed.
577 static u_int xpt_ccb_count; /* Current count of allocated ccbs */
579 struct cam_periph *xpt_periph;
581 static periph_init_t xpt_periph_init;
583 static periph_init_t probe_periph_init;
585 static struct periph_driver xpt_driver =
587 xpt_periph_init, "xpt",
588 TAILQ_HEAD_INITIALIZER(xpt_driver.units)
591 static struct periph_driver probe_driver =
593 probe_periph_init, "probe",
594 TAILQ_HEAD_INITIALIZER(probe_driver.units)
597 DATA_SET(periphdriver_set, xpt_driver);
598 DATA_SET(periphdriver_set, probe_driver);
600 #define XPT_CDEV_MAJOR 104
602 static d_open_t xptopen;
603 static d_close_t xptclose;
604 static d_ioctl_t xptioctl;
606 static struct cdevsw xpt_cdevsw = {
608 /* maj */ XPT_CDEV_MAJOR,
614 /* close */ xptclose,
617 /* ioctl */ xptioctl,
620 /* strategy */ nostrategy,
625 static struct intr_config_hook *xpt_config_hook;
627 /* Registered busses */
628 static TAILQ_HEAD(,cam_eb) xpt_busses;
629 static u_int bus_generation;
631 /* Storage for debugging datastructures */
633 struct cam_path *cam_dpath;
634 u_int32_t cam_dflags;
635 u_int32_t cam_debug_delay;
638 #if defined(CAM_DEBUG_FLAGS) && !defined(CAMDEBUG)
639 #error "You must have options CAMDEBUG to use options CAM_DEBUG_FLAGS"
643 * In order to enable the CAM_DEBUG_* options, the user must have CAMDEBUG
644 * enabled. Also, the user must have either none, or all of CAM_DEBUG_BUS,
645 * CAM_DEBUG_TARGET, and CAM_DEBUG_LUN specified.
647 #if defined(CAM_DEBUG_BUS) || defined(CAM_DEBUG_TARGET) \
648 || defined(CAM_DEBUG_LUN)
650 #if !defined(CAM_DEBUG_BUS) || !defined(CAM_DEBUG_TARGET) \
651 || !defined(CAM_DEBUG_LUN)
652 #error "You must define all or none of CAM_DEBUG_BUS, CAM_DEBUG_TARGET \
654 #endif /* !CAM_DEBUG_BUS || !CAM_DEBUG_TARGET || !CAM_DEBUG_LUN */
655 #else /* !CAMDEBUG */
656 #error "You must use options CAMDEBUG if you use the CAM_DEBUG_* options"
657 #endif /* CAMDEBUG */
658 #endif /* CAM_DEBUG_BUS || CAM_DEBUG_TARGET || CAM_DEBUG_LUN */
660 /* Our boot-time initialization hook */
661 static void xpt_init(void *);
662 SYSINIT(cam, SI_SUB_CONFIGURE, SI_ORDER_SECOND, xpt_init, NULL);
664 static cam_status xpt_compile_path(struct cam_path *new_path,
665 struct cam_periph *perph,
667 target_id_t target_id,
670 static void xpt_release_path(struct cam_path *path);
672 static void xpt_async_bcast(struct async_list *async_head,
673 u_int32_t async_code,
674 struct cam_path *path,
676 static void xpt_dev_async(u_int32_t async_code,
678 struct cam_et *target,
679 struct cam_ed *device,
681 static path_id_t xptnextfreepathid(void);
682 static path_id_t xptpathid(const char *sim_name, int sim_unit, int sim_bus);
683 static union ccb *xpt_get_ccb(struct cam_ed *device);
684 static int xpt_schedule_dev(struct camq *queue, cam_pinfo *dev_pinfo,
685 u_int32_t new_priority);
686 static void xpt_run_dev_allocq(struct cam_eb *bus);
687 static void xpt_run_dev_sendq(struct cam_eb *bus);
688 static timeout_t xpt_release_devq_timeout;
689 static timeout_t xpt_release_simq_timeout;
690 static void xpt_release_bus(struct cam_eb *bus);
691 static void xpt_release_devq_device(struct cam_ed *dev, u_int count,
693 static struct cam_et*
694 xpt_alloc_target(struct cam_eb *bus, target_id_t target_id);
695 static void xpt_release_target(struct cam_eb *bus, struct cam_et *target);
696 static struct cam_ed*
697 xpt_alloc_device(struct cam_eb *bus, struct cam_et *target,
699 static void xpt_release_device(struct cam_eb *bus, struct cam_et *target,
700 struct cam_ed *device);
701 static u_int32_t xpt_dev_ccbq_resize(struct cam_path *path, int newopenings);
702 static struct cam_eb*
703 xpt_find_bus(path_id_t path_id);
704 static struct cam_et*
705 xpt_find_target(struct cam_eb *bus, target_id_t target_id);
706 static struct cam_ed*
707 xpt_find_device(struct cam_et *target, lun_id_t lun_id);
708 static void xpt_scan_bus(struct cam_periph *periph, union ccb *ccb);
709 static void xpt_scan_lun(struct cam_periph *periph,
710 struct cam_path *path, cam_flags flags,
712 static void xptscandone(struct cam_periph *periph, union ccb *done_ccb);
713 static xpt_busfunc_t xptconfigbuscountfunc;
714 static xpt_busfunc_t xptconfigfunc;
715 static void xpt_config(void *arg);
716 static xpt_devicefunc_t xptpassannouncefunc;
717 static void xpt_finishconfig(struct cam_periph *periph, union ccb *ccb);
718 static void xptaction(struct cam_sim *sim, union ccb *work_ccb);
719 static void xptpoll(struct cam_sim *sim);
720 static inthand2_t swi_camnet;
721 static inthand2_t swi_cambio;
722 static void camisr(cam_isrq_t *queue);
724 static void xptstart(struct cam_periph *periph, union ccb *work_ccb);
725 static void xptasync(struct cam_periph *periph,
726 u_int32_t code, cam_path *path);
728 static dev_match_ret xptbusmatch(struct dev_match_pattern *patterns,
729 int num_patterns, struct cam_eb *bus);
730 static dev_match_ret xptdevicematch(struct dev_match_pattern *patterns,
731 int num_patterns, struct cam_ed *device);
732 static dev_match_ret xptperiphmatch(struct dev_match_pattern *patterns,
734 struct cam_periph *periph);
735 static xpt_busfunc_t xptedtbusfunc;
736 static xpt_targetfunc_t xptedttargetfunc;
737 static xpt_devicefunc_t xptedtdevicefunc;
738 static xpt_periphfunc_t xptedtperiphfunc;
739 static xpt_pdrvfunc_t xptplistpdrvfunc;
740 static xpt_periphfunc_t xptplistperiphfunc;
741 static int xptedtmatch(struct ccb_dev_match *cdm);
742 static int xptperiphlistmatch(struct ccb_dev_match *cdm);
743 static int xptbustraverse(struct cam_eb *start_bus,
744 xpt_busfunc_t *tr_func, void *arg);
745 static int xpttargettraverse(struct cam_eb *bus,
746 struct cam_et *start_target,
747 xpt_targetfunc_t *tr_func, void *arg);
748 static int xptdevicetraverse(struct cam_et *target,
749 struct cam_ed *start_device,
750 xpt_devicefunc_t *tr_func, void *arg);
751 static int xptperiphtraverse(struct cam_ed *device,
752 struct cam_periph *start_periph,
753 xpt_periphfunc_t *tr_func, void *arg);
754 static int xptpdrvtraverse(struct periph_driver **start_pdrv,
755 xpt_pdrvfunc_t *tr_func, void *arg);
756 static int xptpdperiphtraverse(struct periph_driver **pdrv,
757 struct cam_periph *start_periph,
758 xpt_periphfunc_t *tr_func,
760 static xpt_busfunc_t xptdefbusfunc;
761 static xpt_targetfunc_t xptdeftargetfunc;
762 static xpt_devicefunc_t xptdefdevicefunc;
763 static xpt_periphfunc_t xptdefperiphfunc;
764 static int xpt_for_all_busses(xpt_busfunc_t *tr_func, void *arg);
766 static int xpt_for_all_targets(xpt_targetfunc_t *tr_func,
769 static int xpt_for_all_devices(xpt_devicefunc_t *tr_func,
772 static int xpt_for_all_periphs(xpt_periphfunc_t *tr_func,
775 static xpt_devicefunc_t xptsetasyncfunc;
776 static xpt_busfunc_t xptsetasyncbusfunc;
777 static cam_status xptregister(struct cam_periph *periph,
779 static cam_status proberegister(struct cam_periph *periph,
781 static void probeschedule(struct cam_periph *probe_periph);
782 static void probestart(struct cam_periph *periph, union ccb *start_ccb);
783 static void proberequestdefaultnegotiation(struct cam_periph *periph);
784 static void probedone(struct cam_periph *periph, union ccb *done_ccb);
785 static void probecleanup(struct cam_periph *periph);
786 static void xpt_find_quirk(struct cam_ed *device);
787 static void xpt_set_transfer_settings(struct ccb_trans_settings *cts,
788 struct cam_ed *device,
790 static void xpt_toggle_tags(struct cam_path *path);
791 static void xpt_start_tags(struct cam_path *path);
792 static __inline int xpt_schedule_dev_allocq(struct cam_eb *bus,
794 static __inline int xpt_schedule_dev_sendq(struct cam_eb *bus,
796 static __inline int periph_is_queued(struct cam_periph *periph);
797 static __inline int device_is_alloc_queued(struct cam_ed *device);
798 static __inline int device_is_send_queued(struct cam_ed *device);
799 static __inline int dev_allocq_is_runnable(struct cam_devq *devq);
802 xpt_schedule_dev_allocq(struct cam_eb *bus, struct cam_ed *dev)
806 if (dev->ccbq.devq_openings > 0) {
807 if ((dev->flags & CAM_DEV_RESIZE_QUEUE_NEEDED) != 0) {
808 cam_ccbq_resize(&dev->ccbq,
809 dev->ccbq.dev_openings
810 + dev->ccbq.dev_active);
811 dev->flags &= ~CAM_DEV_RESIZE_QUEUE_NEEDED;
814 * The priority of a device waiting for CCB resources
815 * is that of the the highest priority peripheral driver
818 retval = xpt_schedule_dev(&bus->sim->devq->alloc_queue,
819 &dev->alloc_ccb_entry.pinfo,
820 CAMQ_GET_HEAD(&dev->drvq)->priority);
829 xpt_schedule_dev_sendq(struct cam_eb *bus, struct cam_ed *dev)
833 if (dev->ccbq.dev_openings > 0) {
835 * The priority of a device waiting for controller
836 * resources is that of the the highest priority CCB
840 xpt_schedule_dev(&bus->sim->devq->send_queue,
841 &dev->send_ccb_entry.pinfo,
842 CAMQ_GET_HEAD(&dev->ccbq.queue)->priority);
850 periph_is_queued(struct cam_periph *periph)
852 return (periph->pinfo.index != CAM_UNQUEUED_INDEX);
856 device_is_alloc_queued(struct cam_ed *device)
858 return (device->alloc_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX);
862 device_is_send_queued(struct cam_ed *device)
864 return (device->send_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX);
868 dev_allocq_is_runnable(struct cam_devq *devq)
872 * Have space to do more work.
873 * Allowed to do work.
875 return ((devq->alloc_queue.qfrozen_cnt == 0)
876 && (devq->alloc_queue.entries > 0)
877 && (devq->alloc_openings > 0));
883 make_dev(&xpt_cdevsw, 0, UID_ROOT, GID_OPERATOR, 0600, "xpt0");
893 xptdone(struct cam_periph *periph, union ccb *done_ccb)
895 /* Caller will release the CCB */
896 wakeup(&done_ccb->ccb_h.cbfcnp);
900 xptopen(dev_t dev, int flags, int fmt, struct thread *td)
904 unit = minor(dev) & 0xff;
907 * Only allow read-write access.
909 if (((flags & FWRITE) == 0) || ((flags & FREAD) == 0))
913 * We don't allow nonblocking access.
915 if ((flags & O_NONBLOCK) != 0) {
916 printf("xpt%d: can't do nonblocking access\n", unit);
921 * We only have one transport layer right now. If someone accesses
922 * us via something other than minor number 1, point out their
926 printf("xptopen: got invalid xpt unit %d\n", unit);
930 /* Mark ourselves open */
931 xsoftc.flags |= XPT_FLAG_OPEN;
937 xptclose(dev_t dev, int flag, int fmt, struct thread *td)
941 unit = minor(dev) & 0xff;
944 * We only have one transport layer right now. If someone accesses
945 * us via something other than minor number 1, point out their
949 printf("xptclose: got invalid xpt unit %d\n", unit);
953 /* Mark ourselves closed */
954 xsoftc.flags &= ~XPT_FLAG_OPEN;
960 xptioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct thread *td)
965 unit = minor(dev) & 0xff;
968 * We only have one transport layer right now. If someone accesses
969 * us via something other than minor number 1, point out their
973 printf("xptioctl: got invalid xpt unit %d\n", unit);
979 * For the transport layer CAMIOCOMMAND ioctl, we really only want
980 * to accept CCB types that don't quite make sense to send through a
981 * passthrough driver.
987 inccb = (union ccb *)addr;
989 switch(inccb->ccb_h.func_code) {
992 if ((inccb->ccb_h.target_id != CAM_TARGET_WILDCARD)
993 || (inccb->ccb_h.target_lun != CAM_LUN_WILDCARD)) {
1002 ccb = xpt_alloc_ccb();
1005 * Create a path using the bus, target, and lun the
1008 if (xpt_create_path(&ccb->ccb_h.path, xpt_periph,
1009 inccb->ccb_h.path_id,
1010 inccb->ccb_h.target_id,
1011 inccb->ccb_h.target_lun) !=
1017 /* Ensure all of our fields are correct */
1018 xpt_setup_ccb(&ccb->ccb_h, ccb->ccb_h.path,
1019 inccb->ccb_h.pinfo.priority);
1020 xpt_merge_ccb(ccb, inccb);
1021 ccb->ccb_h.cbfcnp = xptdone;
1022 cam_periph_runccb(ccb, NULL, 0, 0, NULL);
1023 bcopy(ccb, inccb, sizeof(union ccb));
1024 xpt_free_path(ccb->ccb_h.path);
1032 * This is an immediate CCB, so it's okay to
1033 * allocate it on the stack.
1037 * Create a path using the bus, target, and lun the
1040 if (xpt_create_path(&ccb.ccb_h.path, xpt_periph,
1041 inccb->ccb_h.path_id,
1042 inccb->ccb_h.target_id,
1043 inccb->ccb_h.target_lun) !=
1048 /* Ensure all of our fields are correct */
1049 xpt_setup_ccb(&ccb.ccb_h, ccb.ccb_h.path,
1050 inccb->ccb_h.pinfo.priority);
1051 xpt_merge_ccb(&ccb, inccb);
1052 ccb.ccb_h.cbfcnp = xptdone;
1054 bcopy(&ccb, inccb, sizeof(union ccb));
1055 xpt_free_path(ccb.ccb_h.path);
1059 case XPT_DEV_MATCH: {
1060 struct cam_periph_map_info mapinfo;
1061 struct cam_path *old_path;
1064 * We can't deal with physical addresses for this
1065 * type of transaction.
1067 if (inccb->ccb_h.flags & CAM_DATA_PHYS) {
1073 * Save this in case the caller had it set to
1074 * something in particular.
1076 old_path = inccb->ccb_h.path;
1079 * We really don't need a path for the matching
1080 * code. The path is needed because of the
1081 * debugging statements in xpt_action(). They
1082 * assume that the CCB has a valid path.
1084 inccb->ccb_h.path = xpt_periph->path;
1086 bzero(&mapinfo, sizeof(mapinfo));
1089 * Map the pattern and match buffers into kernel
1090 * virtual address space.
1092 error = cam_periph_mapmem(inccb, &mapinfo);
1095 inccb->ccb_h.path = old_path;
1100 * This is an immediate CCB, we can send it on directly.
1105 * Map the buffers back into user space.
1107 cam_periph_unmapmem(inccb, &mapinfo);
1109 inccb->ccb_h.path = old_path;
1121 * This is the getpassthru ioctl. It takes a XPT_GDEVLIST ccb as input,
1122 * with the periphal driver name and unit name filled in. The other
1123 * fields don't really matter as input. The passthrough driver name
1124 * ("pass"), and unit number are passed back in the ccb. The current
1125 * device generation number, and the index into the device peripheral
1126 * driver list, and the status are also passed back. Note that
1127 * since we do everything in one pass, unlike the XPT_GDEVLIST ccb,
1128 * we never return a status of CAM_GDEVLIST_LIST_CHANGED. It is
1129 * (or rather should be) impossible for the device peripheral driver
1130 * list to change since we look at the whole thing in one pass, and
1131 * we do it with splcam protection.
1134 case CAMGETPASSTHRU: {
1136 struct cam_periph *periph;
1137 struct periph_driver **p_drv;
1141 int base_periph_found;
1145 ccb = (union ccb *)addr;
1146 unit = ccb->cgdl.unit_number;
1147 name = ccb->cgdl.periph_name;
1149 * Every 100 devices, we want to drop our spl protection to
1150 * give the software interrupt handler a chance to run.
1151 * Most systems won't run into this check, but this should
1152 * avoid starvation in the software interrupt handler in
1157 ccb = (union ccb *)addr;
1159 base_periph_found = 0;
1162 * Sanity check -- make sure we don't get a null peripheral
1165 if (*ccb->cgdl.periph_name == '\0') {
1170 /* Keep the list from changing while we traverse it */
1173 cur_generation = xsoftc.generation;
1175 /* first find our driver in the list of drivers */
1176 SET_FOREACH(p_drv, periphdriver_set) {
1177 if (strcmp((*p_drv)->driver_name, name) == 0)
1181 if (*p_drv == NULL) {
1183 ccb->ccb_h.status = CAM_REQ_CMP_ERR;
1184 ccb->cgdl.status = CAM_GDEVLIST_ERROR;
1185 *ccb->cgdl.periph_name = '\0';
1186 ccb->cgdl.unit_number = 0;
1192 * Run through every peripheral instance of this driver
1193 * and check to see whether it matches the unit passed
1194 * in by the user. If it does, get out of the loops and
1195 * find the passthrough driver associated with that
1196 * peripheral driver.
1198 for (periph = TAILQ_FIRST(&(*p_drv)->units); periph != NULL;
1199 periph = TAILQ_NEXT(periph, unit_links)) {
1201 if (periph->unit_number == unit) {
1203 } else if (--splbreaknum == 0) {
1207 if (cur_generation != xsoftc.generation)
1212 * If we found the peripheral driver that the user passed
1213 * in, go through all of the peripheral drivers for that
1214 * particular device and look for a passthrough driver.
1216 if (periph != NULL) {
1217 struct cam_ed *device;
1220 base_periph_found = 1;
1221 device = periph->path->device;
1222 for (i = 0, periph = device->periphs.slh_first;
1224 periph = periph->periph_links.sle_next, i++) {
1226 * Check to see whether we have a
1227 * passthrough device or not.
1229 if (strcmp(periph->periph_name, "pass") == 0) {
1231 * Fill in the getdevlist fields.
1233 strcpy(ccb->cgdl.periph_name,
1234 periph->periph_name);
1235 ccb->cgdl.unit_number =
1236 periph->unit_number;
1237 if (periph->periph_links.sle_next)
1239 CAM_GDEVLIST_MORE_DEVS;
1242 CAM_GDEVLIST_LAST_DEVICE;
1243 ccb->cgdl.generation =
1245 ccb->cgdl.index = i;
1247 * Fill in some CCB header fields
1248 * that the user may want.
1250 ccb->ccb_h.path_id =
1251 periph->path->bus->path_id;
1252 ccb->ccb_h.target_id =
1253 periph->path->target->target_id;
1254 ccb->ccb_h.target_lun =
1255 periph->path->device->lun_id;
1256 ccb->ccb_h.status = CAM_REQ_CMP;
1263 * If the periph is null here, one of two things has
1264 * happened. The first possibility is that we couldn't
1265 * find the unit number of the particular peripheral driver
1266 * that the user is asking about. e.g. the user asks for
1267 * the passthrough driver for "da11". We find the list of
1268 * "da" peripherals all right, but there is no unit 11.
1269 * The other possibility is that we went through the list
1270 * of peripheral drivers attached to the device structure,
1271 * but didn't find one with the name "pass". Either way,
1272 * we return ENOENT, since we couldn't find something.
1274 if (periph == NULL) {
1275 ccb->ccb_h.status = CAM_REQ_CMP_ERR;
1276 ccb->cgdl.status = CAM_GDEVLIST_ERROR;
1277 *ccb->cgdl.periph_name = '\0';
1278 ccb->cgdl.unit_number = 0;
1281 * It is unfortunate that this is even necessary,
1282 * but there are many, many clueless users out there.
1283 * If this is true, the user is looking for the
1284 * passthrough driver, but doesn't have one in his
1287 if (base_periph_found == 1) {
1288 printf("xptioctl: pass driver is not in the "
1290 printf("xptioctl: put \"device pass0\" in "
1291 "your kernel config file\n");
1305 /* Functions accessed by the peripheral drivers */
1310 struct cam_sim *xpt_sim;
1311 struct cam_path *path;
1312 struct cam_devq *devq;
1315 TAILQ_INIT(&xpt_busses);
1316 TAILQ_INIT(&cam_bioq);
1317 TAILQ_INIT(&cam_netq);
1318 SLIST_INIT(&ccb_freeq);
1319 STAILQ_INIT(&highpowerq);
1322 * The xpt layer is, itself, the equivelent of a SIM.
1323 * Allow 16 ccbs in the ccb pool for it. This should
1324 * give decent parallelism when we probe busses and
1325 * perform other XPT functions.
1327 devq = cam_simq_alloc(16);
1328 xpt_sim = cam_sim_alloc(xptaction,
1333 /*max_dev_transactions*/0,
1334 /*max_tagged_dev_transactions*/0,
1338 xpt_bus_register(xpt_sim, /*bus #*/0);
1341 * Looking at the XPT from the SIM layer, the XPT is
1342 * the equivelent of a peripheral driver. Allocate
1343 * a peripheral driver entry for us.
1345 if ((status = xpt_create_path(&path, NULL, CAM_XPT_PATH_ID,
1346 CAM_TARGET_WILDCARD,
1347 CAM_LUN_WILDCARD)) != CAM_REQ_CMP) {
1348 printf("xpt_init: xpt_create_path failed with status %#x,"
1349 " failing attach\n", status);
1353 cam_periph_alloc(xptregister, NULL, NULL, NULL, "xpt", CAM_PERIPH_BIO,
1354 path, NULL, 0, NULL);
1355 xpt_free_path(path);
1357 xpt_sim->softc = xpt_periph;
1360 * Register a callback for when interrupts are enabled.
1363 (struct intr_config_hook *)malloc(sizeof(struct intr_config_hook),
1364 M_TEMP, M_NOWAIT | M_ZERO);
1365 if (xpt_config_hook == NULL) {
1366 printf("xpt_init: Cannot malloc config hook "
1367 "- failing attach\n");
1371 xpt_config_hook->ich_func = xpt_config;
1372 if (config_intrhook_establish(xpt_config_hook) != 0) {
1373 free (xpt_config_hook, M_TEMP);
1374 printf("xpt_init: config_intrhook_establish failed "
1375 "- failing attach\n");
1378 /* Install our software interrupt handlers */
1379 register_swi(SWI_CAMNET, swi_camnet, NULL, "swi_camnet");
1380 register_swi(SWI_CAMBIO, swi_cambio, NULL, "swi_cambio");
1384 xptregister(struct cam_periph *periph, void *arg)
1386 if (periph == NULL) {
1387 printf("xptregister: periph was NULL!!\n");
1388 return(CAM_REQ_CMP_ERR);
1391 periph->softc = NULL;
1393 xpt_periph = periph;
1395 return(CAM_REQ_CMP);
1399 xpt_add_periph(struct cam_periph *periph)
1401 struct cam_ed *device;
1403 struct periph_list *periph_head;
1405 device = periph->path->device;
1407 periph_head = &device->periphs;
1409 status = CAM_REQ_CMP;
1411 if (device != NULL) {
1415 * Make room for this peripheral
1416 * so it will fit in the queue
1417 * when it's scheduled to run
1420 status = camq_resize(&device->drvq,
1421 device->drvq.array_size + 1);
1423 device->generation++;
1425 SLIST_INSERT_HEAD(periph_head, periph, periph_links);
1430 xsoftc.generation++;
1436 xpt_remove_periph(struct cam_periph *periph)
1438 struct cam_ed *device;
1440 device = periph->path->device;
1442 if (device != NULL) {
1444 struct periph_list *periph_head;
1446 periph_head = &device->periphs;
1448 /* Release the slot for this peripheral */
1450 camq_resize(&device->drvq, device->drvq.array_size - 1);
1452 device->generation++;
1454 SLIST_REMOVE(periph_head, periph, cam_periph, periph_links);
1459 xsoftc.generation++;
1464 xpt_announce_periph(struct cam_periph *periph, char *announce_string)
1468 struct cam_path *path;
1469 struct ccb_trans_settings cts;
1471 path = periph->path;
1473 * To ensure that this is printed in one piece,
1474 * mask out CAM interrupts.
1477 printf("%s%d at %s%d bus %d target %d lun %d\n",
1478 periph->periph_name, periph->unit_number,
1479 path->bus->sim->sim_name,
1480 path->bus->sim->unit_number,
1481 path->bus->sim->bus_id,
1482 path->target->target_id,
1483 path->device->lun_id);
1484 printf("%s%d: ", periph->periph_name, periph->unit_number);
1485 scsi_print_inquiry(&path->device->inq_data);
1487 && (path->device->serial_num_len > 0)) {
1488 /* Don't wrap the screen - print only the first 60 chars */
1489 printf("%s%d: Serial Number %.60s\n", periph->periph_name,
1490 periph->unit_number, path->device->serial_num);
1492 xpt_setup_ccb(&cts.ccb_h, path, /*priority*/1);
1493 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
1494 cts.flags = CCB_TRANS_CURRENT_SETTINGS;
1495 xpt_action((union ccb*)&cts);
1496 if (cts.ccb_h.status == CAM_REQ_CMP) {
1500 if ((cts.valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0
1501 && cts.sync_offset != 0) {
1502 freq = scsi_calc_syncsrate(cts.sync_period);
1505 struct ccb_pathinq cpi;
1507 /* Ask the SIM for its base transfer speed */
1508 xpt_setup_ccb(&cpi.ccb_h, path, /*priority*/1);
1509 cpi.ccb_h.func_code = XPT_PATH_INQ;
1510 xpt_action((union ccb *)&cpi);
1512 speed = cpi.base_transfer_speed;
1515 if ((cts.valid & CCB_TRANS_BUS_WIDTH_VALID) != 0)
1516 speed *= (0x01 << cts.bus_width);
1519 printf("%s%d: %d.%03dMB/s transfers",
1520 periph->periph_name, periph->unit_number,
1523 printf("%s%d: %dKB/s transfers", periph->periph_name,
1524 periph->unit_number, speed);
1525 if ((cts.valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0
1526 && cts.sync_offset != 0) {
1527 printf(" (%d.%03dMHz, offset %d", freq / 1000,
1528 freq % 1000, cts.sync_offset);
1530 if ((cts.valid & CCB_TRANS_BUS_WIDTH_VALID) != 0
1531 && cts.bus_width > 0) {
1532 if ((cts.valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0
1533 && cts.sync_offset != 0) {
1538 printf("%dbit)", 8 * (0x01 << cts.bus_width));
1539 } else if ((cts.valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0
1540 && cts.sync_offset != 0) {
1544 if (path->device->inq_flags & SID_CmdQue
1545 || path->device->flags & CAM_DEV_TAG_AFTER_COUNT) {
1546 printf(", Tagged Queueing Enabled");
1550 } else if (path->device->inq_flags & SID_CmdQue
1551 || path->device->flags & CAM_DEV_TAG_AFTER_COUNT) {
1552 printf("%s%d: Tagged Queueing Enabled\n",
1553 periph->periph_name, periph->unit_number);
1557 * We only want to print the caller's announce string if they've
1560 if (announce_string != NULL)
1561 printf("%s%d: %s\n", periph->periph_name,
1562 periph->unit_number, announce_string);
1567 static dev_match_ret
1568 xptbusmatch(struct dev_match_pattern *patterns, int num_patterns,
1571 dev_match_ret retval;
1574 retval = DM_RET_NONE;
1577 * If we aren't given something to match against, that's an error.
1580 return(DM_RET_ERROR);
1583 * If there are no match entries, then this bus matches no
1586 if ((patterns == NULL) || (num_patterns == 0))
1587 return(DM_RET_DESCEND | DM_RET_COPY);
1589 for (i = 0; i < num_patterns; i++) {
1590 struct bus_match_pattern *cur_pattern;
1593 * If the pattern in question isn't for a bus node, we
1594 * aren't interested. However, we do indicate to the
1595 * calling routine that we should continue descending the
1596 * tree, since the user wants to match against lower-level
1599 if (patterns[i].type != DEV_MATCH_BUS) {
1600 if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)
1601 retval |= DM_RET_DESCEND;
1605 cur_pattern = &patterns[i].pattern.bus_pattern;
1608 * If they want to match any bus node, we give them any
1611 if (cur_pattern->flags == BUS_MATCH_ANY) {
1612 /* set the copy flag */
1613 retval |= DM_RET_COPY;
1616 * If we've already decided on an action, go ahead
1619 if ((retval & DM_RET_ACTION_MASK) != DM_RET_NONE)
1624 * Not sure why someone would do this...
1626 if (cur_pattern->flags == BUS_MATCH_NONE)
1629 if (((cur_pattern->flags & BUS_MATCH_PATH) != 0)
1630 && (cur_pattern->path_id != bus->path_id))
1633 if (((cur_pattern->flags & BUS_MATCH_BUS_ID) != 0)
1634 && (cur_pattern->bus_id != bus->sim->bus_id))
1637 if (((cur_pattern->flags & BUS_MATCH_UNIT) != 0)
1638 && (cur_pattern->unit_number != bus->sim->unit_number))
1641 if (((cur_pattern->flags & BUS_MATCH_NAME) != 0)
1642 && (strncmp(cur_pattern->dev_name, bus->sim->sim_name,
1647 * If we get to this point, the user definitely wants
1648 * information on this bus. So tell the caller to copy the
1651 retval |= DM_RET_COPY;
1654 * If the return action has been set to descend, then we
1655 * know that we've already seen a non-bus matching
1656 * expression, therefore we need to further descend the tree.
1657 * This won't change by continuing around the loop, so we
1658 * go ahead and return. If we haven't seen a non-bus
1659 * matching expression, we keep going around the loop until
1660 * we exhaust the matching expressions. We'll set the stop
1661 * flag once we fall out of the loop.
1663 if ((retval & DM_RET_ACTION_MASK) == DM_RET_DESCEND)
1668 * If the return action hasn't been set to descend yet, that means
1669 * we haven't seen anything other than bus matching patterns. So
1670 * tell the caller to stop descending the tree -- the user doesn't
1671 * want to match against lower level tree elements.
1673 if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)
1674 retval |= DM_RET_STOP;
1679 static dev_match_ret
1680 xptdevicematch(struct dev_match_pattern *patterns, int num_patterns,
1681 struct cam_ed *device)
1683 dev_match_ret retval;
1686 retval = DM_RET_NONE;
1689 * If we aren't given something to match against, that's an error.
1692 return(DM_RET_ERROR);
1695 * If there are no match entries, then this device matches no
1698 if ((patterns == NULL) || (patterns == 0))
1699 return(DM_RET_DESCEND | DM_RET_COPY);
1701 for (i = 0; i < num_patterns; i++) {
1702 struct device_match_pattern *cur_pattern;
1705 * If the pattern in question isn't for a device node, we
1706 * aren't interested.
1708 if (patterns[i].type != DEV_MATCH_DEVICE) {
1709 if ((patterns[i].type == DEV_MATCH_PERIPH)
1710 && ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE))
1711 retval |= DM_RET_DESCEND;
1715 cur_pattern = &patterns[i].pattern.device_pattern;
1718 * If they want to match any device node, we give them any
1721 if (cur_pattern->flags == DEV_MATCH_ANY) {
1722 /* set the copy flag */
1723 retval |= DM_RET_COPY;
1727 * If we've already decided on an action, go ahead
1730 if ((retval & DM_RET_ACTION_MASK) != DM_RET_NONE)
1735 * Not sure why someone would do this...
1737 if (cur_pattern->flags == DEV_MATCH_NONE)
1740 if (((cur_pattern->flags & DEV_MATCH_PATH) != 0)
1741 && (cur_pattern->path_id != device->target->bus->path_id))
1744 if (((cur_pattern->flags & DEV_MATCH_TARGET) != 0)
1745 && (cur_pattern->target_id != device->target->target_id))
1748 if (((cur_pattern->flags & DEV_MATCH_LUN) != 0)
1749 && (cur_pattern->target_lun != device->lun_id))
1752 if (((cur_pattern->flags & DEV_MATCH_INQUIRY) != 0)
1753 && (cam_quirkmatch((caddr_t)&device->inq_data,
1754 (caddr_t)&cur_pattern->inq_pat,
1755 1, sizeof(cur_pattern->inq_pat),
1756 scsi_static_inquiry_match) == NULL))
1760 * If we get to this point, the user definitely wants
1761 * information on this device. So tell the caller to copy
1764 retval |= DM_RET_COPY;
1767 * If the return action has been set to descend, then we
1768 * know that we've already seen a peripheral matching
1769 * expression, therefore we need to further descend the tree.
1770 * This won't change by continuing around the loop, so we
1771 * go ahead and return. If we haven't seen a peripheral
1772 * matching expression, we keep going around the loop until
1773 * we exhaust the matching expressions. We'll set the stop
1774 * flag once we fall out of the loop.
1776 if ((retval & DM_RET_ACTION_MASK) == DM_RET_DESCEND)
1781 * If the return action hasn't been set to descend yet, that means
1782 * we haven't seen any peripheral matching patterns. So tell the
1783 * caller to stop descending the tree -- the user doesn't want to
1784 * match against lower level tree elements.
1786 if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)
1787 retval |= DM_RET_STOP;
1793 * Match a single peripheral against any number of match patterns.
1795 static dev_match_ret
1796 xptperiphmatch(struct dev_match_pattern *patterns, int num_patterns,
1797 struct cam_periph *periph)
1799 dev_match_ret retval;
1803 * If we aren't given something to match against, that's an error.
1806 return(DM_RET_ERROR);
1809 * If there are no match entries, then this peripheral matches no
1812 if ((patterns == NULL) || (num_patterns == 0))
1813 return(DM_RET_STOP | DM_RET_COPY);
1816 * There aren't any nodes below a peripheral node, so there's no
1817 * reason to descend the tree any further.
1819 retval = DM_RET_STOP;
1821 for (i = 0; i < num_patterns; i++) {
1822 struct periph_match_pattern *cur_pattern;
1825 * If the pattern in question isn't for a peripheral, we
1826 * aren't interested.
1828 if (patterns[i].type != DEV_MATCH_PERIPH)
1831 cur_pattern = &patterns[i].pattern.periph_pattern;
1834 * If they want to match on anything, then we will do so.
1836 if (cur_pattern->flags == PERIPH_MATCH_ANY) {
1837 /* set the copy flag */
1838 retval |= DM_RET_COPY;
1841 * We've already set the return action to stop,
1842 * since there are no nodes below peripherals in
1849 * Not sure why someone would do this...
1851 if (cur_pattern->flags == PERIPH_MATCH_NONE)
1854 if (((cur_pattern->flags & PERIPH_MATCH_PATH) != 0)
1855 && (cur_pattern->path_id != periph->path->bus->path_id))
1859 * For the target and lun id's, we have to make sure the
1860 * target and lun pointers aren't NULL. The xpt peripheral
1861 * has a wildcard target and device.
1863 if (((cur_pattern->flags & PERIPH_MATCH_TARGET) != 0)
1864 && ((periph->path->target == NULL)
1865 ||(cur_pattern->target_id != periph->path->target->target_id)))
1868 if (((cur_pattern->flags & PERIPH_MATCH_LUN) != 0)
1869 && ((periph->path->device == NULL)
1870 || (cur_pattern->target_lun != periph->path->device->lun_id)))
1873 if (((cur_pattern->flags & PERIPH_MATCH_UNIT) != 0)
1874 && (cur_pattern->unit_number != periph->unit_number))
1877 if (((cur_pattern->flags & PERIPH_MATCH_NAME) != 0)
1878 && (strncmp(cur_pattern->periph_name, periph->periph_name,
1883 * If we get to this point, the user definitely wants
1884 * information on this peripheral. So tell the caller to
1885 * copy the data out.
1887 retval |= DM_RET_COPY;
1890 * The return action has already been set to stop, since
1891 * peripherals don't have any nodes below them in the EDT.
1897 * If we get to this point, the peripheral that was passed in
1898 * doesn't match any of the patterns.
1904 xptedtbusfunc(struct cam_eb *bus, void *arg)
1906 struct ccb_dev_match *cdm;
1907 dev_match_ret retval;
1909 cdm = (struct ccb_dev_match *)arg;
1912 * If our position is for something deeper in the tree, that means
1913 * that we've already seen this node. So, we keep going down.
1915 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
1916 && (cdm->pos.cookie.bus == bus)
1917 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
1918 && (cdm->pos.cookie.target != NULL))
1919 retval = DM_RET_DESCEND;
1921 retval = xptbusmatch(cdm->patterns, cdm->num_patterns, bus);
1924 * If we got an error, bail out of the search.
1926 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
1927 cdm->status = CAM_DEV_MATCH_ERROR;
1932 * If the copy flag is set, copy this bus out.
1934 if (retval & DM_RET_COPY) {
1937 spaceleft = cdm->match_buf_len - (cdm->num_matches *
1938 sizeof(struct dev_match_result));
1941 * If we don't have enough space to put in another
1942 * match result, save our position and tell the
1943 * user there are more devices to check.
1945 if (spaceleft < sizeof(struct dev_match_result)) {
1946 bzero(&cdm->pos, sizeof(cdm->pos));
1947 cdm->pos.position_type =
1948 CAM_DEV_POS_EDT | CAM_DEV_POS_BUS;
1950 cdm->pos.cookie.bus = bus;
1951 cdm->pos.generations[CAM_BUS_GENERATION]=
1953 cdm->status = CAM_DEV_MATCH_MORE;
1956 j = cdm->num_matches;
1958 cdm->matches[j].type = DEV_MATCH_BUS;
1959 cdm->matches[j].result.bus_result.path_id = bus->path_id;
1960 cdm->matches[j].result.bus_result.bus_id = bus->sim->bus_id;
1961 cdm->matches[j].result.bus_result.unit_number =
1962 bus->sim->unit_number;
1963 strncpy(cdm->matches[j].result.bus_result.dev_name,
1964 bus->sim->sim_name, DEV_IDLEN);
1968 * If the user is only interested in busses, there's no
1969 * reason to descend to the next level in the tree.
1971 if ((retval & DM_RET_ACTION_MASK) == DM_RET_STOP)
1975 * If there is a target generation recorded, check it to
1976 * make sure the target list hasn't changed.
1978 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
1979 && (bus == cdm->pos.cookie.bus)
1980 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
1981 && (cdm->pos.generations[CAM_TARGET_GENERATION] != 0)
1982 && (cdm->pos.generations[CAM_TARGET_GENERATION] !=
1984 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
1988 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
1989 && (cdm->pos.cookie.bus == bus)
1990 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
1991 && (cdm->pos.cookie.target != NULL))
1992 return(xpttargettraverse(bus,
1993 (struct cam_et *)cdm->pos.cookie.target,
1994 xptedttargetfunc, arg));
1996 return(xpttargettraverse(bus, NULL, xptedttargetfunc, arg));
2000 xptedttargetfunc(struct cam_et *target, void *arg)
2002 struct ccb_dev_match *cdm;
2004 cdm = (struct ccb_dev_match *)arg;
2007 * If there is a device list generation recorded, check it to
2008 * make sure the device list hasn't changed.
2010 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2011 && (cdm->pos.cookie.bus == target->bus)
2012 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2013 && (cdm->pos.cookie.target == target)
2014 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2015 && (cdm->pos.generations[CAM_DEV_GENERATION] != 0)
2016 && (cdm->pos.generations[CAM_DEV_GENERATION] !=
2017 target->generation)) {
2018 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2022 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2023 && (cdm->pos.cookie.bus == target->bus)
2024 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2025 && (cdm->pos.cookie.target == target)
2026 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2027 && (cdm->pos.cookie.device != NULL))
2028 return(xptdevicetraverse(target,
2029 (struct cam_ed *)cdm->pos.cookie.device,
2030 xptedtdevicefunc, arg));
2032 return(xptdevicetraverse(target, NULL, xptedtdevicefunc, arg));
2036 xptedtdevicefunc(struct cam_ed *device, void *arg)
2039 struct ccb_dev_match *cdm;
2040 dev_match_ret retval;
2042 cdm = (struct ccb_dev_match *)arg;
2045 * If our position is for something deeper in the tree, that means
2046 * that we've already seen this node. So, we keep going down.
2048 if ((cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2049 && (cdm->pos.cookie.device == device)
2050 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2051 && (cdm->pos.cookie.periph != NULL))
2052 retval = DM_RET_DESCEND;
2054 retval = xptdevicematch(cdm->patterns, cdm->num_patterns,
2057 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
2058 cdm->status = CAM_DEV_MATCH_ERROR;
2063 * If the copy flag is set, copy this device out.
2065 if (retval & DM_RET_COPY) {
2068 spaceleft = cdm->match_buf_len - (cdm->num_matches *
2069 sizeof(struct dev_match_result));
2072 * If we don't have enough space to put in another
2073 * match result, save our position and tell the
2074 * user there are more devices to check.
2076 if (spaceleft < sizeof(struct dev_match_result)) {
2077 bzero(&cdm->pos, sizeof(cdm->pos));
2078 cdm->pos.position_type =
2079 CAM_DEV_POS_EDT | CAM_DEV_POS_BUS |
2080 CAM_DEV_POS_TARGET | CAM_DEV_POS_DEVICE;
2082 cdm->pos.cookie.bus = device->target->bus;
2083 cdm->pos.generations[CAM_BUS_GENERATION]=
2085 cdm->pos.cookie.target = device->target;
2086 cdm->pos.generations[CAM_TARGET_GENERATION] =
2087 device->target->bus->generation;
2088 cdm->pos.cookie.device = device;
2089 cdm->pos.generations[CAM_DEV_GENERATION] =
2090 device->target->generation;
2091 cdm->status = CAM_DEV_MATCH_MORE;
2094 j = cdm->num_matches;
2096 cdm->matches[j].type = DEV_MATCH_DEVICE;
2097 cdm->matches[j].result.device_result.path_id =
2098 device->target->bus->path_id;
2099 cdm->matches[j].result.device_result.target_id =
2100 device->target->target_id;
2101 cdm->matches[j].result.device_result.target_lun =
2103 bcopy(&device->inq_data,
2104 &cdm->matches[j].result.device_result.inq_data,
2105 sizeof(struct scsi_inquiry_data));
2107 /* Let the user know whether this device is unconfigured */
2108 if (device->flags & CAM_DEV_UNCONFIGURED)
2109 cdm->matches[j].result.device_result.flags =
2110 DEV_RESULT_UNCONFIGURED;
2112 cdm->matches[j].result.device_result.flags =
2117 * If the user isn't interested in peripherals, don't descend
2118 * the tree any further.
2120 if ((retval & DM_RET_ACTION_MASK) == DM_RET_STOP)
2124 * If there is a peripheral list generation recorded, make sure
2125 * it hasn't changed.
2127 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2128 && (device->target->bus == cdm->pos.cookie.bus)
2129 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2130 && (device->target == cdm->pos.cookie.target)
2131 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2132 && (device == cdm->pos.cookie.device)
2133 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2134 && (cdm->pos.generations[CAM_PERIPH_GENERATION] != 0)
2135 && (cdm->pos.generations[CAM_PERIPH_GENERATION] !=
2136 device->generation)){
2137 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2141 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2142 && (cdm->pos.cookie.bus == device->target->bus)
2143 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2144 && (cdm->pos.cookie.target == device->target)
2145 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2146 && (cdm->pos.cookie.device == device)
2147 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2148 && (cdm->pos.cookie.periph != NULL))
2149 return(xptperiphtraverse(device,
2150 (struct cam_periph *)cdm->pos.cookie.periph,
2151 xptedtperiphfunc, arg));
2153 return(xptperiphtraverse(device, NULL, xptedtperiphfunc, arg));
2157 xptedtperiphfunc(struct cam_periph *periph, void *arg)
2159 struct ccb_dev_match *cdm;
2160 dev_match_ret retval;
2162 cdm = (struct ccb_dev_match *)arg;
2164 retval = xptperiphmatch(cdm->patterns, cdm->num_patterns, periph);
2166 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
2167 cdm->status = CAM_DEV_MATCH_ERROR;
2172 * If the copy flag is set, copy this peripheral out.
2174 if (retval & DM_RET_COPY) {
2177 spaceleft = cdm->match_buf_len - (cdm->num_matches *
2178 sizeof(struct dev_match_result));
2181 * If we don't have enough space to put in another
2182 * match result, save our position and tell the
2183 * user there are more devices to check.
2185 if (spaceleft < sizeof(struct dev_match_result)) {
2186 bzero(&cdm->pos, sizeof(cdm->pos));
2187 cdm->pos.position_type =
2188 CAM_DEV_POS_EDT | CAM_DEV_POS_BUS |
2189 CAM_DEV_POS_TARGET | CAM_DEV_POS_DEVICE |
2192 cdm->pos.cookie.bus = periph->path->bus;
2193 cdm->pos.generations[CAM_BUS_GENERATION]=
2195 cdm->pos.cookie.target = periph->path->target;
2196 cdm->pos.generations[CAM_TARGET_GENERATION] =
2197 periph->path->bus->generation;
2198 cdm->pos.cookie.device = periph->path->device;
2199 cdm->pos.generations[CAM_DEV_GENERATION] =
2200 periph->path->target->generation;
2201 cdm->pos.cookie.periph = periph;
2202 cdm->pos.generations[CAM_PERIPH_GENERATION] =
2203 periph->path->device->generation;
2204 cdm->status = CAM_DEV_MATCH_MORE;
2208 j = cdm->num_matches;
2210 cdm->matches[j].type = DEV_MATCH_PERIPH;
2211 cdm->matches[j].result.periph_result.path_id =
2212 periph->path->bus->path_id;
2213 cdm->matches[j].result.periph_result.target_id =
2214 periph->path->target->target_id;
2215 cdm->matches[j].result.periph_result.target_lun =
2216 periph->path->device->lun_id;
2217 cdm->matches[j].result.periph_result.unit_number =
2218 periph->unit_number;
2219 strncpy(cdm->matches[j].result.periph_result.periph_name,
2220 periph->periph_name, DEV_IDLEN);
2227 xptedtmatch(struct ccb_dev_match *cdm)
2231 cdm->num_matches = 0;
2234 * Check the bus list generation. If it has changed, the user
2235 * needs to reset everything and start over.
2237 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2238 && (cdm->pos.generations[CAM_BUS_GENERATION] != 0)
2239 && (cdm->pos.generations[CAM_BUS_GENERATION] != bus_generation)) {
2240 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2244 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2245 && (cdm->pos.cookie.bus != NULL))
2246 ret = xptbustraverse((struct cam_eb *)cdm->pos.cookie.bus,
2247 xptedtbusfunc, cdm);
2249 ret = xptbustraverse(NULL, xptedtbusfunc, cdm);
2252 * If we get back 0, that means that we had to stop before fully
2253 * traversing the EDT. It also means that one of the subroutines
2254 * has set the status field to the proper value. If we get back 1,
2255 * we've fully traversed the EDT and copied out any matching entries.
2258 cdm->status = CAM_DEV_MATCH_LAST;
2264 xptplistpdrvfunc(struct periph_driver **pdrv, void *arg)
2266 struct ccb_dev_match *cdm;
2268 cdm = (struct ccb_dev_match *)arg;
2270 if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR)
2271 && (cdm->pos.cookie.pdrv == pdrv)
2272 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2273 && (cdm->pos.generations[CAM_PERIPH_GENERATION] != 0)
2274 && (cdm->pos.generations[CAM_PERIPH_GENERATION] !=
2275 (*pdrv)->generation)) {
2276 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2280 if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR)
2281 && (cdm->pos.cookie.pdrv == pdrv)
2282 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2283 && (cdm->pos.cookie.periph != NULL))
2284 return(xptpdperiphtraverse(pdrv,
2285 (struct cam_periph *)cdm->pos.cookie.periph,
2286 xptplistperiphfunc, arg));
2288 return(xptpdperiphtraverse(pdrv, NULL,xptplistperiphfunc, arg));
2292 xptplistperiphfunc(struct cam_periph *periph, void *arg)
2294 struct ccb_dev_match *cdm;
2295 dev_match_ret retval;
2297 cdm = (struct ccb_dev_match *)arg;
2299 retval = xptperiphmatch(cdm->patterns, cdm->num_patterns, periph);
2301 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
2302 cdm->status = CAM_DEV_MATCH_ERROR;
2307 * If the copy flag is set, copy this peripheral out.
2309 if (retval & DM_RET_COPY) {
2312 spaceleft = cdm->match_buf_len - (cdm->num_matches *
2313 sizeof(struct dev_match_result));
2316 * If we don't have enough space to put in another
2317 * match result, save our position and tell the
2318 * user there are more devices to check.
2320 if (spaceleft < sizeof(struct dev_match_result)) {
2321 struct periph_driver **pdrv;
2324 bzero(&cdm->pos, sizeof(cdm->pos));
2325 cdm->pos.position_type =
2326 CAM_DEV_POS_PDRV | CAM_DEV_POS_PDPTR |
2330 * This may look a bit non-sensical, but it is
2331 * actually quite logical. There are very few
2332 * peripheral drivers, and bloating every peripheral
2333 * structure with a pointer back to its parent
2334 * peripheral driver linker set entry would cost
2335 * more in the long run than doing this quick lookup.
2337 SET_FOREACH(pdrv, periphdriver_set) {
2338 if (strcmp((*pdrv)->driver_name,
2339 periph->periph_name) == 0)
2344 cdm->status = CAM_DEV_MATCH_ERROR;
2348 cdm->pos.cookie.pdrv = pdrv;
2350 * The periph generation slot does double duty, as
2351 * does the periph pointer slot. They are used for
2352 * both edt and pdrv lookups and positioning.
2354 cdm->pos.cookie.periph = periph;
2355 cdm->pos.generations[CAM_PERIPH_GENERATION] =
2356 (*pdrv)->generation;
2357 cdm->status = CAM_DEV_MATCH_MORE;
2361 j = cdm->num_matches;
2363 cdm->matches[j].type = DEV_MATCH_PERIPH;
2364 cdm->matches[j].result.periph_result.path_id =
2365 periph->path->bus->path_id;
2368 * The transport layer peripheral doesn't have a target or
2371 if (periph->path->target)
2372 cdm->matches[j].result.periph_result.target_id =
2373 periph->path->target->target_id;
2375 cdm->matches[j].result.periph_result.target_id = -1;
2377 if (periph->path->device)
2378 cdm->matches[j].result.periph_result.target_lun =
2379 periph->path->device->lun_id;
2381 cdm->matches[j].result.periph_result.target_lun = -1;
2383 cdm->matches[j].result.periph_result.unit_number =
2384 periph->unit_number;
2385 strncpy(cdm->matches[j].result.periph_result.periph_name,
2386 periph->periph_name, DEV_IDLEN);
2393 xptperiphlistmatch(struct ccb_dev_match *cdm)
2397 cdm->num_matches = 0;
2400 * At this point in the edt traversal function, we check the bus
2401 * list generation to make sure that no busses have been added or
2402 * removed since the user last sent a XPT_DEV_MATCH ccb through.
2403 * For the peripheral driver list traversal function, however, we
2404 * don't have to worry about new peripheral driver types coming or
2405 * going; they're in a linker set, and therefore can't change
2406 * without a recompile.
2409 if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR)
2410 && (cdm->pos.cookie.pdrv != NULL))
2411 ret = xptpdrvtraverse(
2412 (struct periph_driver **)cdm->pos.cookie.pdrv,
2413 xptplistpdrvfunc, cdm);
2415 ret = xptpdrvtraverse(NULL, xptplistpdrvfunc, cdm);
2418 * If we get back 0, that means that we had to stop before fully
2419 * traversing the peripheral driver tree. It also means that one of
2420 * the subroutines has set the status field to the proper value. If
2421 * we get back 1, we've fully traversed the EDT and copied out any
2425 cdm->status = CAM_DEV_MATCH_LAST;
2431 xptbustraverse(struct cam_eb *start_bus, xpt_busfunc_t *tr_func, void *arg)
2433 struct cam_eb *bus, *next_bus;
2438 for (bus = (start_bus ? start_bus : TAILQ_FIRST(&xpt_busses));
2441 next_bus = TAILQ_NEXT(bus, links);
2443 retval = tr_func(bus, arg);
2452 xpttargettraverse(struct cam_eb *bus, struct cam_et *start_target,
2453 xpt_targetfunc_t *tr_func, void *arg)
2455 struct cam_et *target, *next_target;
2459 for (target = (start_target ? start_target :
2460 TAILQ_FIRST(&bus->et_entries));
2461 target != NULL; target = next_target) {
2463 next_target = TAILQ_NEXT(target, links);
2465 retval = tr_func(target, arg);
2475 xptdevicetraverse(struct cam_et *target, struct cam_ed *start_device,
2476 xpt_devicefunc_t *tr_func, void *arg)
2478 struct cam_ed *device, *next_device;
2482 for (device = (start_device ? start_device :
2483 TAILQ_FIRST(&target->ed_entries));
2485 device = next_device) {
2487 next_device = TAILQ_NEXT(device, links);
2489 retval = tr_func(device, arg);
2499 xptperiphtraverse(struct cam_ed *device, struct cam_periph *start_periph,
2500 xpt_periphfunc_t *tr_func, void *arg)
2502 struct cam_periph *periph, *next_periph;
2507 for (periph = (start_periph ? start_periph :
2508 SLIST_FIRST(&device->periphs));
2510 periph = next_periph) {
2512 next_periph = SLIST_NEXT(periph, periph_links);
2514 retval = tr_func(periph, arg);
2523 xptpdrvtraverse(struct periph_driver **start_pdrv,
2524 xpt_pdrvfunc_t *tr_func, void *arg)
2526 struct periph_driver **pdrv;
2532 * We don't traverse the peripheral driver list like we do the
2533 * other lists, because it is a linker set, and therefore cannot be
2534 * changed during runtime. If the peripheral driver list is ever
2535 * re-done to be something other than a linker set (i.e. it can
2536 * change while the system is running), the list traversal should
2537 * be modified to work like the other traversal functions.
2539 SET_FOREACH(pdrv, periphdriver_set) {
2540 if (start_pdrv == NULL || start_pdrv == pdrv) {
2541 retval = tr_func(pdrv, arg);
2544 start_pdrv = NULL; /* traverse remainder */
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) {
4236 /* Update our notion of when the last reset occurred */
4237 microuptime(&bus->last_reset);
4240 for (target = TAILQ_FIRST(&bus->et_entries);
4242 target = next_target) {
4244 next_target = TAILQ_NEXT(target, links);
4246 if (path->target != target
4247 && path->target->target_id != CAM_TARGET_WILDCARD
4248 && target->target_id != CAM_TARGET_WILDCARD)
4251 if (async_code == AC_SENT_BDR) {
4252 /* Update our notion of when the last reset occurred */
4253 microuptime(&path->target->last_reset);
4256 for (device = TAILQ_FIRST(&target->ed_entries);
4258 device = next_device) {
4260 next_device = TAILQ_NEXT(device, links);
4262 if (path->device != device
4263 && path->device->lun_id != CAM_LUN_WILDCARD
4264 && device->lun_id != CAM_LUN_WILDCARD)
4267 xpt_dev_async(async_code, bus, target,
4270 xpt_async_bcast(&device->asyncs, async_code,
4276 * If this wasn't a fully wildcarded async, tell all
4277 * clients that want all async events.
4279 if (bus != xpt_periph->path->bus)
4280 xpt_async_bcast(&xpt_periph->path->device->asyncs, async_code,
4286 xpt_async_bcast(struct async_list *async_head,
4287 u_int32_t async_code,
4288 struct cam_path *path, void *async_arg)
4290 struct async_node *cur_entry;
4292 cur_entry = SLIST_FIRST(async_head);
4293 while (cur_entry != NULL) {
4294 struct async_node *next_entry;
4296 * Grab the next list entry before we call the current
4297 * entry's callback. This is because the callback function
4298 * can delete its async callback entry.
4300 next_entry = SLIST_NEXT(cur_entry, links);
4301 if ((cur_entry->event_enable & async_code) != 0)
4302 cur_entry->callback(cur_entry->callback_arg,
4305 cur_entry = next_entry;
4310 * Handle any per-device event notifications that require action by the XPT.
4313 xpt_dev_async(u_int32_t async_code, struct cam_eb *bus, struct cam_et *target,
4314 struct cam_ed *device, void *async_arg)
4317 struct cam_path newpath;
4320 * We only need to handle events for real devices.
4322 if (target->target_id == CAM_TARGET_WILDCARD
4323 || device->lun_id == CAM_LUN_WILDCARD)
4327 * We need our own path with wildcards expanded to
4328 * handle certain types of events.
4330 if ((async_code == AC_SENT_BDR)
4331 || (async_code == AC_BUS_RESET)
4332 || (async_code == AC_INQ_CHANGED))
4333 status = xpt_compile_path(&newpath, NULL,
4338 status = CAM_REQ_CMP_ERR;
4340 if (status == CAM_REQ_CMP) {
4343 * Allow transfer negotiation to occur in a
4344 * tag free environment.
4346 if (async_code == AC_SENT_BDR
4347 || async_code == AC_BUS_RESET)
4348 xpt_toggle_tags(&newpath);
4350 if (async_code == AC_INQ_CHANGED) {
4352 * We've sent a start unit command, or
4353 * something similar to a device that
4354 * may have caused its inquiry data to
4355 * change. So we re-scan the device to
4356 * refresh the inquiry data for it.
4358 xpt_scan_lun(newpath.periph, &newpath,
4359 CAM_EXPECT_INQ_CHANGE, NULL);
4361 xpt_release_path(&newpath);
4362 } else if (async_code == AC_LOST_DEVICE) {
4363 device->flags |= CAM_DEV_UNCONFIGURED;
4364 } else if (async_code == AC_TRANSFER_NEG) {
4365 struct ccb_trans_settings *settings;
4367 settings = (struct ccb_trans_settings *)async_arg;
4368 xpt_set_transfer_settings(settings, device,
4369 /*async_update*/TRUE);
4374 xpt_freeze_devq(struct cam_path *path, u_int count)
4377 struct ccb_hdr *ccbh;
4380 path->device->qfrozen_cnt += count;
4383 * Mark the last CCB in the queue as needing
4384 * to be requeued if the driver hasn't
4385 * changed it's state yet. This fixes a race
4386 * where a ccb is just about to be queued to
4387 * a controller driver when it's interrupt routine
4388 * freezes the queue. To completly close the
4389 * hole, controller drives must check to see
4390 * if a ccb's status is still CAM_REQ_INPROG
4391 * under spl protection just before they queue
4392 * the CCB. See ahc_action/ahc_freeze_devq for
4395 ccbh = TAILQ_LAST(&path->device->ccbq.active_ccbs, ccb_hdr_tailq);
4396 if (ccbh && ccbh->status == CAM_REQ_INPROG)
4397 ccbh->status = CAM_REQUEUE_REQ;
4399 return (path->device->qfrozen_cnt);
4403 xpt_freeze_simq(struct cam_sim *sim, u_int count)
4405 sim->devq->send_queue.qfrozen_cnt += count;
4406 if (sim->devq->active_dev != NULL) {
4407 struct ccb_hdr *ccbh;
4409 ccbh = TAILQ_LAST(&sim->devq->active_dev->ccbq.active_ccbs,
4411 if (ccbh && ccbh->status == CAM_REQ_INPROG)
4412 ccbh->status = CAM_REQUEUE_REQ;
4414 return (sim->devq->send_queue.qfrozen_cnt);
4418 xpt_release_devq_timeout(void *arg)
4420 struct cam_ed *device;
4422 device = (struct cam_ed *)arg;
4424 xpt_release_devq_device(device, /*count*/1, /*run_queue*/TRUE);
4428 xpt_release_devq(struct cam_path *path, u_int count, int run_queue)
4430 xpt_release_devq_device(path->device, count, run_queue);
4434 xpt_release_devq_device(struct cam_ed *dev, u_int count, int run_queue)
4442 if (dev->qfrozen_cnt > 0) {
4444 count = (count > dev->qfrozen_cnt) ? dev->qfrozen_cnt : count;
4445 dev->qfrozen_cnt -= count;
4446 if (dev->qfrozen_cnt == 0) {
4449 * No longer need to wait for a successful
4450 * command completion.
4452 dev->flags &= ~CAM_DEV_REL_ON_COMPLETE;
4455 * Remove any timeouts that might be scheduled
4456 * to release this queue.
4458 if ((dev->flags & CAM_DEV_REL_TIMEOUT_PENDING) != 0) {
4459 untimeout(xpt_release_devq_timeout, dev,
4461 dev->flags &= ~CAM_DEV_REL_TIMEOUT_PENDING;
4465 * Now that we are unfrozen schedule the
4466 * device so any pending transactions are
4469 if ((dev->ccbq.queue.entries > 0)
4470 && (xpt_schedule_dev_sendq(dev->target->bus, dev))
4471 && (run_queue != 0)) {
4478 xpt_run_dev_sendq(dev->target->bus);
4483 xpt_release_simq(struct cam_sim *sim, int run_queue)
4488 sendq = &(sim->devq->send_queue);
4490 if (sendq->qfrozen_cnt > 0) {
4492 sendq->qfrozen_cnt--;
4493 if (sendq->qfrozen_cnt == 0) {
4497 * If there is a timeout scheduled to release this
4498 * sim queue, remove it. The queue frozen count is
4501 if ((sim->flags & CAM_SIM_REL_TIMEOUT_PENDING) != 0){
4502 untimeout(xpt_release_simq_timeout, sim,
4504 sim->flags &= ~CAM_SIM_REL_TIMEOUT_PENDING;
4506 bus = xpt_find_bus(sim->path_id);
4511 * Now that we are unfrozen run the send queue.
4513 xpt_run_dev_sendq(bus);
4515 xpt_release_bus(bus);
4523 xpt_release_simq_timeout(void *arg)
4525 struct cam_sim *sim;
4527 sim = (struct cam_sim *)arg;
4528 xpt_release_simq(sim, /* run_queue */ TRUE);
4532 xpt_done(union ccb *done_ccb)
4538 CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("xpt_done\n"));
4539 if ((done_ccb->ccb_h.func_code & XPT_FC_QUEUED) != 0) {
4541 * Queue up the request for handling by our SWI handler
4542 * any of the "non-immediate" type of ccbs.
4544 switch (done_ccb->ccb_h.path->periph->type) {
4545 case CAM_PERIPH_BIO:
4546 TAILQ_INSERT_TAIL(&cam_bioq, &done_ccb->ccb_h,
4548 done_ccb->ccb_h.pinfo.index = CAM_DONEQ_INDEX;
4551 case CAM_PERIPH_NET:
4552 TAILQ_INSERT_TAIL(&cam_netq, &done_ccb->ccb_h,
4554 done_ccb->ccb_h.pinfo.index = CAM_DONEQ_INDEX;
4567 new_ccb = malloc(sizeof(*new_ccb), M_DEVBUF, M_WAITOK);
4572 xpt_free_ccb(union ccb *free_ccb)
4574 free(free_ccb, M_DEVBUF);
4579 /* Private XPT functions */
4582 * Get a CAM control block for the caller. Charge the structure to the device
4583 * referenced by the path. If the this device has no 'credits' then the
4584 * device already has the maximum number of outstanding operations under way
4585 * and we return NULL. If we don't have sufficient resources to allocate more
4586 * ccbs, we also return NULL.
4589 xpt_get_ccb(struct cam_ed *device)
4595 if ((new_ccb = (union ccb *)ccb_freeq.slh_first) == NULL) {
4596 new_ccb = malloc(sizeof(*new_ccb), M_DEVBUF, M_NOWAIT);
4597 if (new_ccb == NULL) {
4601 callout_handle_init(&new_ccb->ccb_h.timeout_ch);
4602 SLIST_INSERT_HEAD(&ccb_freeq, &new_ccb->ccb_h,
4606 cam_ccbq_take_opening(&device->ccbq);
4607 SLIST_REMOVE_HEAD(&ccb_freeq, xpt_links.sle);
4613 xpt_release_bus(struct cam_eb *bus)
4618 if ((--bus->refcount == 0)
4619 && (TAILQ_FIRST(&bus->et_entries) == NULL)) {
4620 TAILQ_REMOVE(&xpt_busses, bus, links);
4623 free(bus, M_DEVBUF);
4628 static struct cam_et *
4629 xpt_alloc_target(struct cam_eb *bus, target_id_t target_id)
4631 struct cam_et *target;
4633 target = (struct cam_et *)malloc(sizeof(*target), M_DEVBUF, M_NOWAIT);
4634 if (target != NULL) {
4635 struct cam_et *cur_target;
4637 TAILQ_INIT(&target->ed_entries);
4639 target->target_id = target_id;
4640 target->refcount = 1;
4641 target->generation = 0;
4642 timevalclear(&target->last_reset);
4644 * Hold a reference to our parent bus so it
4645 * will not go away before we do.
4649 /* Insertion sort into our bus's target list */
4650 cur_target = TAILQ_FIRST(&bus->et_entries);
4651 while (cur_target != NULL && cur_target->target_id < target_id)
4652 cur_target = TAILQ_NEXT(cur_target, links);
4654 if (cur_target != NULL) {
4655 TAILQ_INSERT_BEFORE(cur_target, target, links);
4657 TAILQ_INSERT_TAIL(&bus->et_entries, target, links);
4665 xpt_release_target(struct cam_eb *bus, struct cam_et *target)
4670 if ((--target->refcount == 0)
4671 && (TAILQ_FIRST(&target->ed_entries) == NULL)) {
4672 TAILQ_REMOVE(&bus->et_entries, target, links);
4675 free(target, M_DEVBUF);
4676 xpt_release_bus(bus);
4681 static struct cam_ed *
4682 xpt_alloc_device(struct cam_eb *bus, struct cam_et *target, lun_id_t lun_id)
4684 struct cam_ed *device;
4685 struct cam_devq *devq;
4688 /* Make space for us in the device queue on our bus */
4689 devq = bus->sim->devq;
4690 status = cam_devq_resize(devq, devq->alloc_queue.array_size + 1);
4692 if (status != CAM_REQ_CMP) {
4695 device = (struct cam_ed *)malloc(sizeof(*device),
4696 M_DEVBUF, M_NOWAIT);
4699 if (device != NULL) {
4700 struct cam_ed *cur_device;
4702 cam_init_pinfo(&device->alloc_ccb_entry.pinfo);
4703 device->alloc_ccb_entry.device = device;
4704 cam_init_pinfo(&device->send_ccb_entry.pinfo);
4705 device->send_ccb_entry.device = device;
4706 device->target = target;
4707 device->lun_id = lun_id;
4708 /* Initialize our queues */
4709 if (camq_init(&device->drvq, 0) != 0) {
4710 free(device, M_DEVBUF);
4713 if (cam_ccbq_init(&device->ccbq,
4714 bus->sim->max_dev_openings) != 0) {
4715 camq_fini(&device->drvq);
4716 free(device, M_DEVBUF);
4719 SLIST_INIT(&device->asyncs);
4720 SLIST_INIT(&device->periphs);
4721 device->generation = 0;
4722 device->owner = NULL;
4724 * Take the default quirk entry until we have inquiry
4725 * data and can determine a better quirk to use.
4727 device->quirk = &xpt_quirk_table[xpt_quirk_table_size - 1];
4728 bzero(&device->inq_data, sizeof(device->inq_data));
4729 device->inq_flags = 0;
4730 device->queue_flags = 0;
4731 device->serial_num = NULL;
4732 device->serial_num_len = 0;
4733 device->qfrozen_cnt = 0;
4734 device->flags = CAM_DEV_UNCONFIGURED;
4735 device->tag_delay_count = 0;
4736 device->refcount = 1;
4737 callout_handle_init(&device->c_handle);
4740 * Hold a reference to our parent target so it
4741 * will not go away before we do.
4746 * XXX should be limited by number of CCBs this bus can
4749 xpt_max_ccbs += device->ccbq.devq_openings;
4750 /* Insertion sort into our target's device list */
4751 cur_device = TAILQ_FIRST(&target->ed_entries);
4752 while (cur_device != NULL && cur_device->lun_id < lun_id)
4753 cur_device = TAILQ_NEXT(cur_device, links);
4754 if (cur_device != NULL) {
4755 TAILQ_INSERT_BEFORE(cur_device, device, links);
4757 TAILQ_INSERT_TAIL(&target->ed_entries, device, links);
4759 target->generation++;
4765 xpt_release_device(struct cam_eb *bus, struct cam_et *target,
4766 struct cam_ed *device)
4771 if ((--device->refcount == 0)
4772 && ((device->flags & CAM_DEV_UNCONFIGURED) != 0)) {
4773 struct cam_devq *devq;
4775 if (device->alloc_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX
4776 || device->send_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX)
4777 panic("Removing device while still queued for ccbs");
4779 if ((device->flags & CAM_DEV_REL_TIMEOUT_PENDING) != 0)
4780 untimeout(xpt_release_devq_timeout, device,
4783 TAILQ_REMOVE(&target->ed_entries, device,links);
4784 target->generation++;
4785 xpt_max_ccbs -= device->ccbq.devq_openings;
4786 /* Release our slot in the devq */
4787 devq = bus->sim->devq;
4788 cam_devq_resize(devq, devq->alloc_queue.array_size - 1);
4790 free(device, M_DEVBUF);
4791 xpt_release_target(bus, target);
4797 xpt_dev_ccbq_resize(struct cam_path *path, int newopenings)
4807 diff = newopenings - (dev->ccbq.dev_active + dev->ccbq.dev_openings);
4808 result = cam_ccbq_resize(&dev->ccbq, newopenings);
4809 if (result == CAM_REQ_CMP && (diff < 0)) {
4810 dev->flags |= CAM_DEV_RESIZE_QUEUE_NEEDED;
4812 /* Adjust the global limit */
4813 xpt_max_ccbs += diff;
4818 static struct cam_eb *
4819 xpt_find_bus(path_id_t path_id)
4823 for (bus = TAILQ_FIRST(&xpt_busses);
4825 bus = TAILQ_NEXT(bus, links)) {
4826 if (bus->path_id == path_id) {
4834 static struct cam_et *
4835 xpt_find_target(struct cam_eb *bus, target_id_t target_id)
4837 struct cam_et *target;
4839 for (target = TAILQ_FIRST(&bus->et_entries);
4841 target = TAILQ_NEXT(target, links)) {
4842 if (target->target_id == target_id) {
4850 static struct cam_ed *
4851 xpt_find_device(struct cam_et *target, lun_id_t lun_id)
4853 struct cam_ed *device;
4855 for (device = TAILQ_FIRST(&target->ed_entries);
4857 device = TAILQ_NEXT(device, links)) {
4858 if (device->lun_id == lun_id) {
4867 union ccb *request_ccb;
4868 struct ccb_pathinq *cpi;
4870 } xpt_scan_bus_info;
4873 * To start a scan, request_ccb is an XPT_SCAN_BUS ccb.
4874 * As the scan progresses, xpt_scan_bus is used as the
4875 * callback on completion function.
4878 xpt_scan_bus(struct cam_periph *periph, union ccb *request_ccb)
4880 CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE,
4881 ("xpt_scan_bus\n"));
4882 switch (request_ccb->ccb_h.func_code) {
4885 xpt_scan_bus_info *scan_info;
4886 union ccb *work_ccb;
4887 struct cam_path *path;
4892 /* Find out the characteristics of the bus */
4893 work_ccb = xpt_alloc_ccb();
4894 xpt_setup_ccb(&work_ccb->ccb_h, request_ccb->ccb_h.path,
4895 request_ccb->ccb_h.pinfo.priority);
4896 work_ccb->ccb_h.func_code = XPT_PATH_INQ;
4897 xpt_action(work_ccb);
4898 if (work_ccb->ccb_h.status != CAM_REQ_CMP) {
4899 request_ccb->ccb_h.status = work_ccb->ccb_h.status;
4900 xpt_free_ccb(work_ccb);
4901 xpt_done(request_ccb);
4905 if ((work_ccb->cpi.hba_misc & PIM_NOINITIATOR) != 0) {
4907 * Can't scan the bus on an adapter that
4908 * cannot perform the initiator role.
4910 request_ccb->ccb_h.status = CAM_REQ_CMP;
4911 xpt_free_ccb(work_ccb);
4912 xpt_done(request_ccb);
4916 /* Save some state for use while we probe for devices */
4917 scan_info = (xpt_scan_bus_info *)
4918 malloc(sizeof(xpt_scan_bus_info), M_TEMP, M_WAITOK);
4919 scan_info->request_ccb = request_ccb;
4920 scan_info->cpi = &work_ccb->cpi;
4922 /* Cache on our stack so we can work asynchronously */
4923 max_target = scan_info->cpi->max_target;
4924 initiator_id = scan_info->cpi->initiator_id;
4927 * Don't count the initiator if the
4928 * initiator is addressable.
4930 scan_info->pending_count = max_target + 1;
4931 if (initiator_id <= max_target)
4932 scan_info->pending_count--;
4934 for (i = 0; i <= max_target; i++) {
4936 if (i == initiator_id)
4939 status = xpt_create_path(&path, xpt_periph,
4940 request_ccb->ccb_h.path_id,
4942 if (status != CAM_REQ_CMP) {
4943 printf("xpt_scan_bus: xpt_create_path failed"
4944 " with status %#x, bus scan halted\n",
4948 work_ccb = xpt_alloc_ccb();
4949 xpt_setup_ccb(&work_ccb->ccb_h, path,
4950 request_ccb->ccb_h.pinfo.priority);
4951 work_ccb->ccb_h.func_code = XPT_SCAN_LUN;
4952 work_ccb->ccb_h.cbfcnp = xpt_scan_bus;
4953 work_ccb->ccb_h.ppriv_ptr0 = scan_info;
4954 work_ccb->crcn.flags = request_ccb->crcn.flags;
4956 printf("xpt_scan_bus: probing %d:%d:%d\n",
4957 request_ccb->ccb_h.path_id, i, 0);
4959 xpt_action(work_ccb);
4965 xpt_scan_bus_info *scan_info;
4967 target_id_t target_id;
4970 /* Reuse the same CCB to query if a device was really found */
4971 scan_info = (xpt_scan_bus_info *)request_ccb->ccb_h.ppriv_ptr0;
4972 xpt_setup_ccb(&request_ccb->ccb_h, request_ccb->ccb_h.path,
4973 request_ccb->ccb_h.pinfo.priority);
4974 request_ccb->ccb_h.func_code = XPT_GDEV_TYPE;
4976 path_id = request_ccb->ccb_h.path_id;
4977 target_id = request_ccb->ccb_h.target_id;
4978 lun_id = request_ccb->ccb_h.target_lun;
4979 xpt_action(request_ccb);
4982 printf("xpt_scan_bus: got back probe from %d:%d:%d\n",
4983 path_id, target_id, lun_id);
4986 if (request_ccb->ccb_h.status != CAM_REQ_CMP) {
4987 struct cam_ed *device;
4988 struct cam_et *target;
4992 * If we already probed lun 0 successfully, or
4993 * we have additional configured luns on this
4994 * target that might have "gone away", go onto
4997 target = request_ccb->ccb_h.path->target;
4999 * We may touch devices that we don't
5000 * hold references too, so ensure they
5001 * don't disappear out from under us.
5002 * The target above is referenced by the
5003 * path in the request ccb.
5007 device = TAILQ_FIRST(&target->ed_entries);
5008 if (device != NULL) {
5009 phl = device->quirk->quirks & CAM_QUIRK_HILUNS;
5010 if (device->lun_id == 0)
5011 device = TAILQ_NEXT(device, links);
5014 if ((lun_id != 0) || (device != NULL)) {
5015 if (lun_id < (CAM_SCSI2_MAXLUN-1) || phl)
5019 struct cam_ed *device;
5021 device = request_ccb->ccb_h.path->device;
5023 if ((device->quirk->quirks & CAM_QUIRK_NOLUNS) == 0) {
5024 /* Try the next lun */
5025 if (lun_id < (CAM_SCSI2_MAXLUN-1) ||
5026 (device->quirk->quirks & CAM_QUIRK_HILUNS))
5031 xpt_free_path(request_ccb->ccb_h.path);
5034 if ((lun_id == request_ccb->ccb_h.target_lun)
5035 || lun_id > scan_info->cpi->max_lun) {
5038 xpt_free_ccb(request_ccb);
5039 scan_info->pending_count--;
5040 if (scan_info->pending_count == 0) {
5041 xpt_free_ccb((union ccb *)scan_info->cpi);
5042 request_ccb = scan_info->request_ccb;
5043 free(scan_info, M_TEMP);
5044 request_ccb->ccb_h.status = CAM_REQ_CMP;
5045 xpt_done(request_ccb);
5048 /* Try the next device */
5049 struct cam_path *path;
5052 path = request_ccb->ccb_h.path;
5053 status = xpt_create_path(&path, xpt_periph,
5054 path_id, target_id, lun_id);
5055 if (status != CAM_REQ_CMP) {
5056 printf("xpt_scan_bus: xpt_create_path failed "
5057 "with status %#x, halting LUN scan\n",
5059 xpt_free_ccb(request_ccb);
5060 scan_info->pending_count--;
5061 if (scan_info->pending_count == 0) {
5063 (union ccb *)scan_info->cpi);
5064 request_ccb = scan_info->request_ccb;
5065 free(scan_info, M_TEMP);
5066 request_ccb->ccb_h.status = CAM_REQ_CMP;
5067 xpt_done(request_ccb);
5071 xpt_setup_ccb(&request_ccb->ccb_h, path,
5072 request_ccb->ccb_h.pinfo.priority);
5073 request_ccb->ccb_h.func_code = XPT_SCAN_LUN;
5074 request_ccb->ccb_h.cbfcnp = xpt_scan_bus;
5075 request_ccb->ccb_h.ppriv_ptr0 = scan_info;
5076 request_ccb->crcn.flags =
5077 scan_info->request_ccb->crcn.flags;
5079 xpt_print_path(path);
5080 printf("xpt_scan bus probing\n");
5082 xpt_action(request_ccb);
5097 PROBE_TUR_FOR_NEGOTIATION
5101 PROBE_INQUIRY_CKSUM = 0x01,
5102 PROBE_SERIAL_CKSUM = 0x02,
5103 PROBE_NO_ANNOUNCE = 0x04
5107 TAILQ_HEAD(, ccb_hdr) request_ccbs;
5108 probe_action action;
5109 union ccb saved_ccb;
5112 u_int8_t digest[16];
5116 xpt_scan_lun(struct cam_periph *periph, struct cam_path *path,
5117 cam_flags flags, union ccb *request_ccb)
5119 struct ccb_pathinq cpi;
5121 struct cam_path *new_path;
5122 struct cam_periph *old_periph;
5125 CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE,
5126 ("xpt_scan_lun\n"));
5128 xpt_setup_ccb(&cpi.ccb_h, path, /*priority*/1);
5129 cpi.ccb_h.func_code = XPT_PATH_INQ;
5130 xpt_action((union ccb *)&cpi);
5132 if (cpi.ccb_h.status != CAM_REQ_CMP) {
5133 if (request_ccb != NULL) {
5134 request_ccb->ccb_h.status = cpi.ccb_h.status;
5135 xpt_done(request_ccb);
5140 if ((cpi.hba_misc & PIM_NOINITIATOR) != 0) {
5142 * Can't scan the bus on an adapter that
5143 * cannot perform the initiator role.
5145 if (request_ccb != NULL) {
5146 request_ccb->ccb_h.status = CAM_REQ_CMP;
5147 xpt_done(request_ccb);
5152 if (request_ccb == NULL) {
5153 request_ccb = malloc(sizeof(union ccb), M_TEMP, M_NOWAIT);
5154 if (request_ccb == NULL) {
5155 xpt_print_path(path);
5156 printf("xpt_scan_lun: can't allocate CCB, can't "
5160 new_path = malloc(sizeof(*new_path), M_TEMP, M_NOWAIT);
5161 if (new_path == NULL) {
5162 xpt_print_path(path);
5163 printf("xpt_scan_lun: can't allocate path, can't "
5165 free(request_ccb, M_TEMP);
5168 status = xpt_compile_path(new_path, xpt_periph,
5170 path->target->target_id,
5171 path->device->lun_id);
5173 if (status != CAM_REQ_CMP) {
5174 xpt_print_path(path);
5175 printf("xpt_scan_lun: can't compile path, can't "
5177 free(request_ccb, M_TEMP);
5178 free(new_path, M_TEMP);
5181 xpt_setup_ccb(&request_ccb->ccb_h, new_path, /*priority*/ 1);
5182 request_ccb->ccb_h.cbfcnp = xptscandone;
5183 request_ccb->ccb_h.func_code = XPT_SCAN_LUN;
5184 request_ccb->crcn.flags = flags;
5188 if ((old_periph = cam_periph_find(path, "probe")) != NULL) {
5191 softc = (probe_softc *)old_periph->softc;
5192 TAILQ_INSERT_TAIL(&softc->request_ccbs, &request_ccb->ccb_h,
5195 status = cam_periph_alloc(proberegister, NULL, probecleanup,
5196 probestart, "probe",
5198 request_ccb->ccb_h.path, NULL, 0,
5201 if (status != CAM_REQ_CMP) {
5202 xpt_print_path(path);
5203 printf("xpt_scan_lun: cam_alloc_periph returned an "
5204 "error, can't continue probe\n");
5205 request_ccb->ccb_h.status = status;
5206 xpt_done(request_ccb);
5213 xptscandone(struct cam_periph *periph, union ccb *done_ccb)
5215 xpt_release_path(done_ccb->ccb_h.path);
5216 free(done_ccb->ccb_h.path, M_TEMP);
5217 free(done_ccb, M_TEMP);
5221 proberegister(struct cam_periph *periph, void *arg)
5223 union ccb *request_ccb; /* CCB representing the probe request */
5226 request_ccb = (union ccb *)arg;
5227 if (periph == NULL) {
5228 printf("proberegister: periph was NULL!!\n");
5229 return(CAM_REQ_CMP_ERR);
5232 if (request_ccb == NULL) {
5233 printf("proberegister: no probe CCB, "
5234 "can't register device\n");
5235 return(CAM_REQ_CMP_ERR);
5238 softc = (probe_softc *)malloc(sizeof(*softc), M_TEMP, M_NOWAIT);
5240 if (softc == NULL) {
5241 printf("proberegister: Unable to probe new device. "
5242 "Unable to allocate softc\n");
5243 return(CAM_REQ_CMP_ERR);
5245 TAILQ_INIT(&softc->request_ccbs);
5246 TAILQ_INSERT_TAIL(&softc->request_ccbs, &request_ccb->ccb_h,
5249 periph->softc = softc;
5250 cam_periph_acquire(periph);
5252 * Ensure we've waited at least a bus settle
5253 * delay before attempting to probe the device.
5254 * For HBAs that don't do bus resets, this won't make a difference.
5256 cam_periph_freeze_after_event(periph, &periph->path->bus->last_reset,
5258 probeschedule(periph);
5259 return(CAM_REQ_CMP);
5263 probeschedule(struct cam_periph *periph)
5265 struct ccb_pathinq cpi;
5269 softc = (probe_softc *)periph->softc;
5270 ccb = (union ccb *)TAILQ_FIRST(&softc->request_ccbs);
5272 xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1);
5273 cpi.ccb_h.func_code = XPT_PATH_INQ;
5274 xpt_action((union ccb *)&cpi);
5277 * If a device has gone away and another device, or the same one,
5278 * is back in the same place, it should have a unit attention
5279 * condition pending. It will not report the unit attention in
5280 * response to an inquiry, which may leave invalid transfer
5281 * negotiations in effect. The TUR will reveal the unit attention
5282 * condition. Only send the TUR for lun 0, since some devices
5283 * will get confused by commands other than inquiry to non-existent
5284 * luns. If you think a device has gone away start your scan from
5285 * lun 0. This will insure that any bogus transfer settings are
5288 * If we haven't seen the device before and the controller supports
5289 * some kind of transfer negotiation, negotiate with the first
5290 * sent command if no bus reset was performed at startup. This
5291 * ensures that the device is not confused by transfer negotiation
5292 * settings left over by loader or BIOS action.
5294 if (((ccb->ccb_h.path->device->flags & CAM_DEV_UNCONFIGURED) == 0)
5295 && (ccb->ccb_h.target_lun == 0)) {
5296 softc->action = PROBE_TUR;
5297 } else if ((cpi.hba_inquiry & (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE)) != 0
5298 && (cpi.hba_misc & PIM_NOBUSRESET) != 0) {
5299 proberequestdefaultnegotiation(periph);
5300 softc->action = PROBE_INQUIRY;
5302 softc->action = PROBE_INQUIRY;
5305 if (ccb->crcn.flags & CAM_EXPECT_INQ_CHANGE)
5306 softc->flags |= PROBE_NO_ANNOUNCE;
5308 softc->flags &= ~PROBE_NO_ANNOUNCE;
5310 xpt_schedule(periph, ccb->ccb_h.pinfo.priority);
5314 probestart(struct cam_periph *periph, union ccb *start_ccb)
5316 /* Probe the device that our peripheral driver points to */
5317 struct ccb_scsiio *csio;
5320 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("probestart\n"));
5322 softc = (probe_softc *)periph->softc;
5323 csio = &start_ccb->csio;
5325 switch (softc->action) {
5327 case PROBE_TUR_FOR_NEGOTIATION:
5329 scsi_test_unit_ready(csio,
5338 case PROBE_FULL_INQUIRY:
5341 struct scsi_inquiry_data *inq_buf;
5343 inq_buf = &periph->path->device->inq_data;
5345 * If the device is currently configured, we calculate an
5346 * MD5 checksum of the inquiry data, and if the serial number
5347 * length is greater than 0, add the serial number data
5348 * into the checksum as well. Once the inquiry and the
5349 * serial number check finish, we attempt to figure out
5350 * whether we still have the same device.
5352 if ((periph->path->device->flags & CAM_DEV_UNCONFIGURED) == 0) {
5354 MD5Init(&softc->context);
5355 MD5Update(&softc->context, (unsigned char *)inq_buf,
5356 sizeof(struct scsi_inquiry_data));
5357 softc->flags |= PROBE_INQUIRY_CKSUM;
5358 if (periph->path->device->serial_num_len > 0) {
5359 MD5Update(&softc->context,
5360 periph->path->device->serial_num,
5361 periph->path->device->serial_num_len);
5362 softc->flags |= PROBE_SERIAL_CKSUM;
5364 MD5Final(softc->digest, &softc->context);
5367 if (softc->action == PROBE_INQUIRY)
5368 inquiry_len = SHORT_INQUIRY_LENGTH;
5370 inquiry_len = inq_buf->additional_length + 5;
5376 (u_int8_t *)inq_buf,
5381 /*timeout*/60 * 1000);
5384 case PROBE_MODE_SENSE:
5389 mode_buf_len = sizeof(struct scsi_mode_header_6)
5390 + sizeof(struct scsi_mode_blk_desc)
5391 + sizeof(struct scsi_control_page);
5392 mode_buf = malloc(mode_buf_len, M_TEMP, M_NOWAIT);
5393 if (mode_buf != NULL) {
5394 scsi_mode_sense(csio,
5399 SMS_PAGE_CTRL_CURRENT,
5400 SMS_CONTROL_MODE_PAGE,
5407 xpt_print_path(periph->path);
5408 printf("Unable to mode sense control page - malloc failure\n");
5409 softc->action = PROBE_SERIAL_NUM;
5412 case PROBE_SERIAL_NUM:
5414 struct scsi_vpd_unit_serial_number *serial_buf;
5415 struct cam_ed* device;
5418 device = periph->path->device;
5419 device->serial_num = NULL;
5420 device->serial_num_len = 0;
5422 if ((device->quirk->quirks & CAM_QUIRK_NOSERIAL) == 0)
5423 serial_buf = (struct scsi_vpd_unit_serial_number *)
5424 malloc(sizeof(*serial_buf), M_TEMP,
5427 if (serial_buf != NULL) {
5432 (u_int8_t *)serial_buf,
5433 sizeof(*serial_buf),
5435 SVPD_UNIT_SERIAL_NUMBER,
5437 /*timeout*/60 * 1000);
5441 * We'll have to do without, let our probedone
5442 * routine finish up for us.
5444 start_ccb->csio.data_ptr = NULL;
5445 probedone(periph, start_ccb);
5449 xpt_action(start_ccb);
5453 proberequestdefaultnegotiation(struct cam_periph *periph)
5455 struct ccb_trans_settings cts;
5457 xpt_setup_ccb(&cts.ccb_h, periph->path, /*priority*/1);
5458 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
5459 cts.flags = CCB_TRANS_USER_SETTINGS;
5460 xpt_action((union ccb *)&cts);
5461 cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
5462 cts.flags &= ~CCB_TRANS_USER_SETTINGS;
5463 cts.flags |= CCB_TRANS_CURRENT_SETTINGS;
5464 xpt_action((union ccb *)&cts);
5468 probedone(struct cam_periph *periph, union ccb *done_ccb)
5471 struct cam_path *path;
5474 CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("probedone\n"));
5476 softc = (probe_softc *)periph->softc;
5477 path = done_ccb->ccb_h.path;
5478 priority = done_ccb->ccb_h.pinfo.priority;
5480 switch (softc->action) {
5483 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
5485 if (cam_periph_error(done_ccb, 0,
5486 SF_NO_PRINT, NULL) == ERESTART)
5488 else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
5489 /* Don't wedge the queue */
5490 xpt_release_devq(done_ccb->ccb_h.path,
5494 softc->action = PROBE_INQUIRY;
5495 xpt_release_ccb(done_ccb);
5496 xpt_schedule(periph, priority);
5500 case PROBE_FULL_INQUIRY:
5502 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
5503 struct scsi_inquiry_data *inq_buf;
5504 u_int8_t periph_qual;
5506 path->device->flags |= CAM_DEV_INQUIRY_DATA_VALID;
5507 inq_buf = &path->device->inq_data;
5509 periph_qual = SID_QUAL(inq_buf);
5511 switch(periph_qual) {
5512 case SID_QUAL_LU_CONNECTED:
5517 * We conservatively request only
5518 * SHORT_INQUIRY_LEN bytes of inquiry
5519 * information during our first try
5520 * at sending an INQUIRY. If the device
5521 * has more information to give,
5522 * perform a second request specifying
5523 * the amount of information the device
5524 * is willing to give.
5526 alen = inq_buf->additional_length;
5527 if (softc->action == PROBE_INQUIRY
5528 && alen > (SHORT_INQUIRY_LENGTH - 5)) {
5529 softc->action = PROBE_FULL_INQUIRY;
5530 xpt_release_ccb(done_ccb);
5531 xpt_schedule(periph, priority);
5535 xpt_find_quirk(path->device);
5537 if ((inq_buf->flags & SID_CmdQue) != 0)
5538 softc->action = PROBE_MODE_SENSE;
5540 softc->action = PROBE_SERIAL_NUM;
5542 path->device->flags &= ~CAM_DEV_UNCONFIGURED;
5544 xpt_release_ccb(done_ccb);
5545 xpt_schedule(periph, priority);
5551 } else if (cam_periph_error(done_ccb, 0,
5552 done_ccb->ccb_h.target_lun > 0
5553 ? SF_RETRY_UA|SF_QUIET_IR
5555 &softc->saved_ccb) == ERESTART) {
5557 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
5558 /* Don't wedge the queue */
5559 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
5563 * If we get to this point, we got an error status back
5564 * from the inquiry and the error status doesn't require
5565 * automatically retrying the command. Therefore, the
5566 * inquiry failed. If we had inquiry information before
5567 * for this device, but this latest inquiry command failed,
5568 * the device has probably gone away. If this device isn't
5569 * already marked unconfigured, notify the peripheral
5570 * drivers that this device is no more.
5572 if ((path->device->flags & CAM_DEV_UNCONFIGURED) == 0)
5573 /* Send the async notification. */
5574 xpt_async(AC_LOST_DEVICE, path, NULL);
5576 xpt_release_ccb(done_ccb);
5579 case PROBE_MODE_SENSE:
5581 struct ccb_scsiio *csio;
5582 struct scsi_mode_header_6 *mode_hdr;
5584 csio = &done_ccb->csio;
5585 mode_hdr = (struct scsi_mode_header_6 *)csio->data_ptr;
5586 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
5587 struct scsi_control_page *page;
5590 offset = ((u_int8_t *)&mode_hdr[1])
5591 + mode_hdr->blk_desc_len;
5592 page = (struct scsi_control_page *)offset;
5593 path->device->queue_flags = page->queue_flags;
5594 } else if (cam_periph_error(done_ccb, 0,
5595 SF_RETRY_UA|SF_NO_PRINT,
5596 &softc->saved_ccb) == ERESTART) {
5598 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
5599 /* Don't wedge the queue */
5600 xpt_release_devq(done_ccb->ccb_h.path,
5601 /*count*/1, /*run_queue*/TRUE);
5603 xpt_release_ccb(done_ccb);
5604 free(mode_hdr, M_TEMP);
5605 softc->action = PROBE_SERIAL_NUM;
5606 xpt_schedule(periph, priority);
5609 case PROBE_SERIAL_NUM:
5611 struct ccb_scsiio *csio;
5612 struct scsi_vpd_unit_serial_number *serial_buf;
5619 csio = &done_ccb->csio;
5620 priority = done_ccb->ccb_h.pinfo.priority;
5622 (struct scsi_vpd_unit_serial_number *)csio->data_ptr;
5624 /* Clean up from previous instance of this device */
5625 if (path->device->serial_num != NULL) {
5626 free(path->device->serial_num, M_DEVBUF);
5627 path->device->serial_num = NULL;
5628 path->device->serial_num_len = 0;
5631 if (serial_buf == NULL) {
5633 * Don't process the command as it was never sent
5635 } else if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP
5636 && (serial_buf->length > 0)) {
5639 path->device->serial_num =
5640 (u_int8_t *)malloc((serial_buf->length + 1),
5641 M_DEVBUF, M_NOWAIT);
5642 if (path->device->serial_num != NULL) {
5643 bcopy(serial_buf->serial_num,
5644 path->device->serial_num,
5645 serial_buf->length);
5646 path->device->serial_num_len =
5648 path->device->serial_num[serial_buf->length]
5651 } else if (cam_periph_error(done_ccb, 0,
5652 SF_RETRY_UA|SF_NO_PRINT,
5653 &softc->saved_ccb) == ERESTART) {
5655 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
5656 /* Don't wedge the queue */
5657 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
5662 * Let's see if we have seen this device before.
5664 if ((softc->flags & PROBE_INQUIRY_CKSUM) != 0) {
5666 u_int8_t digest[16];
5671 (unsigned char *)&path->device->inq_data,
5672 sizeof(struct scsi_inquiry_data));
5675 MD5Update(&context, serial_buf->serial_num,
5676 serial_buf->length);
5678 MD5Final(digest, &context);
5679 if (bcmp(softc->digest, digest, 16) == 0)
5683 * XXX Do we need to do a TUR in order to ensure
5684 * that the device really hasn't changed???
5687 && ((softc->flags & PROBE_NO_ANNOUNCE) == 0))
5688 xpt_async(AC_LOST_DEVICE, path, NULL);
5690 if (serial_buf != NULL)
5691 free(serial_buf, M_TEMP);
5695 * Now that we have all the necessary
5696 * information to safely perform transfer
5697 * negotiations... Controllers don't perform
5698 * any negotiation or tagged queuing until
5699 * after the first XPT_SET_TRAN_SETTINGS ccb is
5700 * received. So, on a new device, just retreive
5701 * the user settings, and set them as the current
5702 * settings to set the device up.
5704 proberequestdefaultnegotiation(periph);
5705 xpt_release_ccb(done_ccb);
5708 * Perform a TUR to allow the controller to
5709 * perform any necessary transfer negotiation.
5711 softc->action = PROBE_TUR_FOR_NEGOTIATION;
5712 xpt_schedule(periph, priority);
5715 xpt_release_ccb(done_ccb);
5718 case PROBE_TUR_FOR_NEGOTIATION:
5719 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
5720 /* Don't wedge the queue */
5721 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
5725 path->device->flags &= ~CAM_DEV_UNCONFIGURED;
5727 if ((softc->flags & PROBE_NO_ANNOUNCE) == 0) {
5728 /* Inform the XPT that a new device has been found */
5729 done_ccb->ccb_h.func_code = XPT_GDEV_TYPE;
5730 xpt_action(done_ccb);
5732 xpt_async(AC_FOUND_DEVICE, xpt_periph->path, done_ccb);
5734 xpt_release_ccb(done_ccb);
5737 done_ccb = (union ccb *)TAILQ_FIRST(&softc->request_ccbs);
5738 TAILQ_REMOVE(&softc->request_ccbs, &done_ccb->ccb_h, periph_links.tqe);
5739 done_ccb->ccb_h.status = CAM_REQ_CMP;
5741 if (TAILQ_FIRST(&softc->request_ccbs) == NULL) {
5742 cam_periph_invalidate(periph);
5743 cam_periph_release(periph);
5745 probeschedule(periph);
5750 probecleanup(struct cam_periph *periph)
5752 free(periph->softc, M_TEMP);
5756 xpt_find_quirk(struct cam_ed *device)
5760 match = cam_quirkmatch((caddr_t)&device->inq_data,
5761 (caddr_t)xpt_quirk_table,
5762 sizeof(xpt_quirk_table)/sizeof(*xpt_quirk_table),
5763 sizeof(*xpt_quirk_table), scsi_inquiry_match);
5766 panic("xpt_find_quirk: device didn't match wildcard entry!!");
5768 device->quirk = (struct xpt_quirk_entry *)match;
5772 xpt_set_transfer_settings(struct ccb_trans_settings *cts, struct cam_ed *device,
5775 struct cam_sim *sim;
5778 sim = cts->ccb_h.path->bus->sim;
5779 if (async_update == FALSE) {
5780 struct scsi_inquiry_data *inq_data;
5781 struct ccb_pathinq cpi;
5782 struct ccb_trans_settings cur_cts;
5784 if (device == NULL) {
5785 cts->ccb_h.status = CAM_PATH_INVALID;
5786 xpt_done((union ccb *)cts);
5791 * Perform sanity checking against what the
5792 * controller and device can do.
5794 xpt_setup_ccb(&cpi.ccb_h, cts->ccb_h.path, /*priority*/1);
5795 cpi.ccb_h.func_code = XPT_PATH_INQ;
5796 xpt_action((union ccb *)&cpi);
5797 xpt_setup_ccb(&cur_cts.ccb_h, cts->ccb_h.path, /*priority*/1);
5798 cur_cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
5799 cur_cts.flags = CCB_TRANS_CURRENT_SETTINGS;
5800 xpt_action((union ccb *)&cur_cts);
5801 inq_data = &device->inq_data;
5803 /* Fill in any gaps in what the user gave us */
5804 if ((cts->valid & CCB_TRANS_SYNC_RATE_VALID) == 0)
5805 cts->sync_period = cur_cts.sync_period;
5806 if ((cts->valid & CCB_TRANS_SYNC_OFFSET_VALID) == 0)
5807 cts->sync_offset = cur_cts.sync_offset;
5808 if ((cts->valid & CCB_TRANS_BUS_WIDTH_VALID) == 0)
5809 cts->bus_width = cur_cts.bus_width;
5810 if ((cts->valid & CCB_TRANS_DISC_VALID) == 0) {
5811 cts->flags &= ~CCB_TRANS_DISC_ENB;
5812 cts->flags |= cur_cts.flags & CCB_TRANS_DISC_ENB;
5814 if ((cts->valid & CCB_TRANS_TQ_VALID) == 0) {
5815 cts->flags &= ~CCB_TRANS_TAG_ENB;
5816 cts->flags |= cur_cts.flags & CCB_TRANS_TAG_ENB;
5819 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0
5820 && (inq_data->flags & SID_Sync) == 0)
5821 || ((cpi.hba_inquiry & PI_SDTR_ABLE) == 0)
5822 || (cts->sync_offset == 0)
5823 || (cts->sync_period == 0)) {
5825 cts->sync_period = 0;
5826 cts->sync_offset = 0;
5827 } else if ((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0) {
5829 if ((inq_data->spi3data & SID_SPI_CLOCK_DT) == 0
5830 && cts->sync_period <= 0x9) {
5832 * Don't allow DT transmission rates if the
5833 * device does not support it.
5835 cts->sync_period = 0xa;
5837 if ((inq_data->spi3data & SID_SPI_IUS) == 0
5838 && cts->sync_period <= 0x8) {
5840 * Don't allow PACE transmission rates
5841 * if the device does support packetized
5844 cts->sync_period = 0x9;
5848 switch (cts->bus_width) {
5849 case MSG_EXT_WDTR_BUS_32_BIT:
5850 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0
5851 || (inq_data->flags & SID_WBus32) != 0)
5852 && (cpi.hba_inquiry & PI_WIDE_32) != 0)
5854 /* Fall Through to 16-bit */
5855 case MSG_EXT_WDTR_BUS_16_BIT:
5856 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0
5857 || (inq_data->flags & SID_WBus16) != 0)
5858 && (cpi.hba_inquiry & PI_WIDE_16) != 0) {
5859 cts->bus_width = MSG_EXT_WDTR_BUS_16_BIT;
5862 /* Fall Through to 8-bit */
5863 default: /* New bus width?? */
5864 case MSG_EXT_WDTR_BUS_8_BIT:
5865 /* All targets can do this */
5866 cts->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
5870 if ((cts->flags & CCB_TRANS_DISC_ENB) == 0) {
5872 * Can't tag queue without disconnection.
5874 cts->flags &= ~CCB_TRANS_TAG_ENB;
5875 cts->valid |= CCB_TRANS_TQ_VALID;
5878 if ((cpi.hba_inquiry & PI_TAG_ABLE) == 0
5879 || (inq_data->flags & SID_CmdQue) == 0
5880 || (device->queue_flags & SCP_QUEUE_DQUE) != 0
5881 || (device->quirk->mintags == 0)) {
5883 * Can't tag on hardware that doesn't support,
5884 * doesn't have it enabled, or has broken tag support.
5886 cts->flags &= ~CCB_TRANS_TAG_ENB;
5891 if ((cts->valid & CCB_TRANS_TQ_VALID) != 0) {
5895 * If we are transitioning from tags to no-tags or
5896 * vice-versa, we need to carefully freeze and restart
5897 * the queue so that we don't overlap tagged and non-tagged
5898 * commands. We also temporarily stop tags if there is
5899 * a change in transfer negotiation settings to allow
5900 * "tag-less" negotiation.
5902 if ((device->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
5903 || (device->inq_flags & SID_CmdQue) != 0)
5904 device_tagenb = TRUE;
5906 device_tagenb = FALSE;
5908 if (((cts->flags & CCB_TRANS_TAG_ENB) != 0
5909 && device_tagenb == FALSE)
5910 || ((cts->flags & CCB_TRANS_TAG_ENB) == 0
5911 && device_tagenb == TRUE)) {
5913 if ((cts->flags & CCB_TRANS_TAG_ENB) != 0) {
5915 * Delay change to use tags until after a
5916 * few commands have gone to this device so
5917 * the controller has time to perform transfer
5918 * negotiations without tagged messages getting
5921 device->tag_delay_count = CAM_TAG_DELAY_COUNT;
5922 device->flags |= CAM_DEV_TAG_AFTER_COUNT;
5924 xpt_freeze_devq(cts->ccb_h.path, /*count*/1);
5926 device->inq_flags &= ~SID_CmdQue;
5927 xpt_dev_ccbq_resize(cts->ccb_h.path,
5928 sim->max_dev_openings);
5929 device->flags &= ~CAM_DEV_TAG_AFTER_COUNT;
5930 device->tag_delay_count = 0;
5935 if (async_update == FALSE) {
5937 * If we are currently performing tagged transactions to
5938 * this device and want to change its negotiation parameters,
5939 * go non-tagged for a bit to give the controller a chance to
5940 * negotiate unhampered by tag messages.
5942 if ((device->inq_flags & SID_CmdQue) != 0
5943 && (cts->flags & (CCB_TRANS_SYNC_RATE_VALID|
5944 CCB_TRANS_SYNC_OFFSET_VALID|
5945 CCB_TRANS_BUS_WIDTH_VALID)) != 0)
5946 xpt_toggle_tags(cts->ccb_h.path);
5948 (*(sim->sim_action))(sim, (union ccb *)cts);
5952 struct ccb_relsim crs;
5954 xpt_setup_ccb(&crs.ccb_h, cts->ccb_h.path,
5956 crs.ccb_h.func_code = XPT_REL_SIMQ;
5957 crs.release_flags = RELSIM_RELEASE_AFTER_QEMPTY;
5959 = crs.release_timeout
5962 xpt_action((union ccb *)&crs);
5967 xpt_toggle_tags(struct cam_path *path)
5972 * Give controllers a chance to renegotiate
5973 * before starting tag operations. We
5974 * "toggle" tagged queuing off then on
5975 * which causes the tag enable command delay
5976 * counter to come into effect.
5979 if ((dev->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
5980 || ((dev->inq_flags & SID_CmdQue) != 0
5981 && (dev->inq_flags & (SID_Sync|SID_WBus16|SID_WBus32)) != 0)) {
5982 struct ccb_trans_settings cts;
5984 xpt_setup_ccb(&cts.ccb_h, path, 1);
5986 cts.valid = CCB_TRANS_TQ_VALID;
5987 xpt_set_transfer_settings(&cts, path->device,
5988 /*async_update*/TRUE);
5989 cts.flags = CCB_TRANS_TAG_ENB;
5990 xpt_set_transfer_settings(&cts, path->device,
5991 /*async_update*/TRUE);
5996 xpt_start_tags(struct cam_path *path)
5998 struct ccb_relsim crs;
5999 struct cam_ed *device;
6000 struct cam_sim *sim;
6003 device = path->device;
6004 sim = path->bus->sim;
6005 device->flags &= ~CAM_DEV_TAG_AFTER_COUNT;
6006 xpt_freeze_devq(path, /*count*/1);
6007 device->inq_flags |= SID_CmdQue;
6008 newopenings = min(device->quirk->maxtags, sim->max_tagged_dev_openings);
6009 xpt_dev_ccbq_resize(path, newopenings);
6010 xpt_setup_ccb(&crs.ccb_h, path, /*priority*/1);
6011 crs.ccb_h.func_code = XPT_REL_SIMQ;
6012 crs.release_flags = RELSIM_RELEASE_AFTER_QEMPTY;
6014 = crs.release_timeout
6017 xpt_action((union ccb *)&crs);
6020 static int busses_to_config;
6021 static int busses_to_reset;
6024 xptconfigbuscountfunc(struct cam_eb *bus, void *arg)
6026 if (bus->path_id != CAM_XPT_PATH_ID) {
6027 struct cam_path path;
6028 struct ccb_pathinq cpi;
6032 xpt_compile_path(&path, NULL, bus->path_id,
6033 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
6034 xpt_setup_ccb(&cpi.ccb_h, &path, /*priority*/1);
6035 cpi.ccb_h.func_code = XPT_PATH_INQ;
6036 xpt_action((union ccb *)&cpi);
6037 can_negotiate = cpi.hba_inquiry;
6038 can_negotiate &= (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE);
6039 if ((cpi.hba_misc & PIM_NOBUSRESET) == 0
6042 xpt_release_path(&path);
6049 xptconfigfunc(struct cam_eb *bus, void *arg)
6051 struct cam_path *path;
6052 union ccb *work_ccb;
6054 if (bus->path_id != CAM_XPT_PATH_ID) {
6058 work_ccb = xpt_alloc_ccb();
6059 if ((status = xpt_create_path(&path, xpt_periph, bus->path_id,
6060 CAM_TARGET_WILDCARD,
6061 CAM_LUN_WILDCARD)) !=CAM_REQ_CMP){
6062 printf("xptconfigfunc: xpt_create_path failed with "
6063 "status %#x for bus %d\n", status, bus->path_id);
6064 printf("xptconfigfunc: halting bus configuration\n");
6065 xpt_free_ccb(work_ccb);
6067 xpt_finishconfig(xpt_periph, NULL);
6070 xpt_setup_ccb(&work_ccb->ccb_h, path, /*priority*/1);
6071 work_ccb->ccb_h.func_code = XPT_PATH_INQ;
6072 xpt_action(work_ccb);
6073 if (work_ccb->ccb_h.status != CAM_REQ_CMP) {
6074 printf("xptconfigfunc: CPI failed on bus %d "
6075 "with status %d\n", bus->path_id,
6076 work_ccb->ccb_h.status);
6077 xpt_finishconfig(xpt_periph, work_ccb);
6081 can_negotiate = work_ccb->cpi.hba_inquiry;
6082 can_negotiate &= (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE);
6083 if ((work_ccb->cpi.hba_misc & PIM_NOBUSRESET) == 0
6084 && (can_negotiate != 0)) {
6085 xpt_setup_ccb(&work_ccb->ccb_h, path, /*priority*/1);
6086 work_ccb->ccb_h.func_code = XPT_RESET_BUS;
6087 work_ccb->ccb_h.cbfcnp = NULL;
6088 CAM_DEBUG(path, CAM_DEBUG_SUBTRACE,
6089 ("Resetting Bus\n"));
6090 xpt_action(work_ccb);
6091 xpt_finishconfig(xpt_periph, work_ccb);
6093 /* Act as though we performed a successful BUS RESET */
6094 work_ccb->ccb_h.func_code = XPT_RESET_BUS;
6095 xpt_finishconfig(xpt_periph, work_ccb);
6103 xpt_config(void *arg)
6105 /* Now that interrupts are enabled, go find our devices */
6108 /* Setup debugging flags and path */
6109 #ifdef CAM_DEBUG_FLAGS
6110 cam_dflags = CAM_DEBUG_FLAGS;
6111 #else /* !CAM_DEBUG_FLAGS */
6112 cam_dflags = CAM_DEBUG_NONE;
6113 #endif /* CAM_DEBUG_FLAGS */
6114 #ifdef CAM_DEBUG_BUS
6115 if (cam_dflags != CAM_DEBUG_NONE) {
6116 if (xpt_create_path(&cam_dpath, xpt_periph,
6117 CAM_DEBUG_BUS, CAM_DEBUG_TARGET,
6118 CAM_DEBUG_LUN) != CAM_REQ_CMP) {
6119 printf("xpt_config: xpt_create_path() failed for debug"
6120 " target %d:%d:%d, debugging disabled\n",
6121 CAM_DEBUG_BUS, CAM_DEBUG_TARGET, CAM_DEBUG_LUN);
6122 cam_dflags = CAM_DEBUG_NONE;
6126 #else /* !CAM_DEBUG_BUS */
6128 #endif /* CAM_DEBUG_BUS */
6129 #endif /* CAMDEBUG */
6132 * Scan all installed busses.
6134 xpt_for_all_busses(xptconfigbuscountfunc, NULL);
6136 if (busses_to_config == 0) {
6137 /* Call manually because we don't have any busses */
6138 xpt_finishconfig(xpt_periph, NULL);
6140 if (busses_to_reset > 0 && SCSI_DELAY >= 2000) {
6141 printf("Waiting %d seconds for SCSI "
6142 "devices to settle\n", SCSI_DELAY/1000);
6144 xpt_for_all_busses(xptconfigfunc, NULL);
6149 * If the given device only has one peripheral attached to it, and if that
6150 * peripheral is the passthrough driver, announce it. This insures that the
6151 * user sees some sort of announcement for every peripheral in their system.
6154 xptpassannouncefunc(struct cam_ed *device, void *arg)
6156 struct cam_periph *periph;
6159 for (periph = SLIST_FIRST(&device->periphs), i = 0; periph != NULL;
6160 periph = SLIST_NEXT(periph, periph_links), i++);
6162 periph = SLIST_FIRST(&device->periphs);
6164 && (strncmp(periph->periph_name, "pass", 4) == 0))
6165 xpt_announce_periph(periph, NULL);
6171 xpt_finishconfig(struct cam_periph *periph, union ccb *done_ccb)
6173 struct periph_driver **p_drv;
6175 if (done_ccb != NULL) {
6176 CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE,
6177 ("xpt_finishconfig\n"));
6178 switch(done_ccb->ccb_h.func_code) {
6180 if (done_ccb->ccb_h.status == CAM_REQ_CMP) {
6181 done_ccb->ccb_h.func_code = XPT_SCAN_BUS;
6182 done_ccb->ccb_h.cbfcnp = xpt_finishconfig;
6183 xpt_action(done_ccb);
6189 xpt_free_path(done_ccb->ccb_h.path);
6195 if (busses_to_config == 0) {
6196 /* Register all the peripheral drivers */
6197 /* XXX This will have to change when we have loadable modules */
6198 SET_FOREACH(p_drv, periphdriver_set) {
6203 * Check for devices with no "standard" peripheral driver
6204 * attached. For any devices like that, announce the
6205 * passthrough driver so the user will see something.
6207 xpt_for_all_devices(xptpassannouncefunc, NULL);
6209 /* Release our hook so that the boot can continue. */
6210 config_intrhook_disestablish(xpt_config_hook);
6211 free(xpt_config_hook, M_TEMP);
6212 xpt_config_hook = NULL;
6214 if (done_ccb != NULL)
6215 xpt_free_ccb(done_ccb);
6219 xptaction(struct cam_sim *sim, union ccb *work_ccb)
6221 CAM_DEBUG(work_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("xptaction\n"));
6223 switch (work_ccb->ccb_h.func_code) {
6224 /* Common cases first */
6225 case XPT_PATH_INQ: /* Path routing inquiry */
6227 struct ccb_pathinq *cpi;
6229 cpi = &work_ccb->cpi;
6230 cpi->version_num = 1; /* XXX??? */
6231 cpi->hba_inquiry = 0;
6232 cpi->target_sprt = 0;
6234 cpi->hba_eng_cnt = 0;
6235 cpi->max_target = 0;
6237 cpi->initiator_id = 0;
6238 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
6239 strncpy(cpi->hba_vid, "", HBA_IDLEN);
6240 strncpy(cpi->dev_name, sim->sim_name, DEV_IDLEN);
6241 cpi->unit_number = sim->unit_number;
6242 cpi->bus_id = sim->bus_id;
6243 cpi->base_transfer_speed = 0;
6244 cpi->ccb_h.status = CAM_REQ_CMP;
6249 work_ccb->ccb_h.status = CAM_REQ_INVALID;
6256 * The xpt as a "controller" has no interrupt sources, so polling
6260 xptpoll(struct cam_sim *sim)
6265 * Should only be called by the machine interrupt dispatch routines,
6266 * so put these prototypes here instead of in the header.
6270 swi_camnet(void *arg)
6276 swi_cambio(void *arg)
6282 camisr(cam_isrq_t *queue)
6285 struct ccb_hdr *ccb_h;
6288 while ((ccb_h = TAILQ_FIRST(queue)) != NULL) {
6291 TAILQ_REMOVE(queue, ccb_h, sim_links.tqe);
6292 ccb_h->pinfo.index = CAM_UNQUEUED_INDEX;
6295 CAM_DEBUG(ccb_h->path, CAM_DEBUG_TRACE,
6300 if (ccb_h->flags & CAM_HIGH_POWER) {
6301 struct highpowerlist *hphead;
6302 struct cam_ed *device;
6303 union ccb *send_ccb;
6305 hphead = &highpowerq;
6307 send_ccb = (union ccb *)STAILQ_FIRST(hphead);
6310 * Increment the count since this command is done.
6315 * Any high powered commands queued up?
6317 if (send_ccb != NULL) {
6318 device = send_ccb->ccb_h.path->device;
6320 STAILQ_REMOVE_HEAD(hphead, xpt_links.stqe);
6322 xpt_release_devq(send_ccb->ccb_h.path,
6323 /*count*/1, /*runqueue*/TRUE);
6326 if ((ccb_h->func_code & XPT_FC_USER_CCB) == 0) {
6329 dev = ccb_h->path->device;
6332 cam_ccbq_ccb_done(&dev->ccbq, (union ccb *)ccb_h);
6334 ccb_h->path->bus->sim->devq->send_active--;
6335 ccb_h->path->bus->sim->devq->send_openings++;
6338 if ((dev->flags & CAM_DEV_REL_ON_COMPLETE) != 0
6339 || ((dev->flags & CAM_DEV_REL_ON_QUEUE_EMPTY) != 0
6340 && (dev->ccbq.dev_active == 0))) {
6342 xpt_release_devq(ccb_h->path, /*count*/1,
6346 if ((dev->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
6347 && (--dev->tag_delay_count == 0))
6348 xpt_start_tags(ccb_h->path);
6350 if ((dev->ccbq.queue.entries > 0)
6351 && (dev->qfrozen_cnt == 0)
6352 && (device_is_send_queued(dev) == 0)) {
6353 runq = xpt_schedule_dev_sendq(ccb_h->path->bus,
6358 if (ccb_h->status & CAM_RELEASE_SIMQ) {
6359 xpt_release_simq(ccb_h->path->bus->sim,
6361 ccb_h->status &= ~CAM_RELEASE_SIMQ;
6365 if ((ccb_h->flags & CAM_DEV_QFRZDIS)
6366 && (ccb_h->status & CAM_DEV_QFRZN)) {
6367 xpt_release_devq(ccb_h->path, /*count*/1,
6369 ccb_h->status &= ~CAM_DEV_QFRZN;
6371 xpt_run_dev_sendq(ccb_h->path->bus);
6374 /* Call the peripheral driver's callback */
6375 (*ccb_h->cbfcnp)(ccb_h->path->periph, (union ccb *)ccb_h);
6377 /* Raise IPL for while test */