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
31 #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 */
50 #include <cam/cam_ccb.h>
51 #include <cam/cam_periph.h>
52 #include <cam/cam_sim.h>
53 #include <cam/cam_xpt.h>
54 #include <cam/cam_xpt_sim.h>
55 #include <cam/cam_xpt_periph.h>
56 #include <cam/cam_debug.h>
58 #include <cam/scsi/scsi_all.h>
59 #include <cam/scsi/scsi_message.h>
60 #include <cam/scsi/scsi_pass.h>
63 /* Datastructures internal to the xpt layer */
66 * Definition of an async handler callback block. These are used to add
67 * SIMs and peripherals to the async callback lists.
70 SLIST_ENTRY(async_node) links;
71 u_int32_t event_enable; /* Async Event enables */
72 void (*callback)(void *arg, u_int32_t code,
73 struct cam_path *path, void *args);
77 SLIST_HEAD(async_list, async_node);
78 SLIST_HEAD(periph_list, cam_periph);
79 static STAILQ_HEAD(highpowerlist, ccb_hdr) highpowerq;
82 * This is the maximum number of high powered commands (e.g. start unit)
83 * that can be outstanding at a particular time.
85 #ifndef CAM_MAX_HIGHPOWER
86 #define CAM_MAX_HIGHPOWER 4
89 /* number of high powered commands that can go through right now */
90 static int num_highpower = CAM_MAX_HIGHPOWER;
93 * Structure for queueing a device in a run queue.
94 * There is one run queue for allocating new ccbs,
95 * and another for sending ccbs to the controller.
99 struct cam_ed *device;
103 * The CAM EDT (Existing Device Table) contains the device information for
104 * all devices for all busses in the system. The table contains a
105 * cam_ed structure for each device on the bus.
108 TAILQ_ENTRY(cam_ed) links;
109 struct cam_ed_qinfo alloc_ccb_entry;
110 struct cam_ed_qinfo send_ccb_entry;
111 struct cam_et *target;
114 * Queue of type drivers wanting to do
115 * work on this device.
117 struct cam_ccbq ccbq; /* Queue of pending ccbs */
118 struct async_list asyncs; /* Async callback info for this B/T/L */
119 struct periph_list periphs; /* All attached devices */
120 u_int generation; /* Generation number */
121 struct cam_periph *owner; /* Peripheral driver's ownership tag */
122 struct xpt_quirk_entry *quirk; /* Oddities about this device */
123 /* Storage for the inquiry data */
124 #ifdef CAM_NEW_TRAN_CODE
126 u_int protocol_version;
128 u_int transport_version;
129 #endif /* CAM_NEW_TRAN_CODE */
130 struct scsi_inquiry_data inq_data;
131 u_int8_t inq_flags; /*
132 * Current settings for inquiry flags.
133 * This allows us to override settings
134 * like disconnection and tagged
135 * queuing for a device.
137 u_int8_t queue_flags; /* Queue flags from the control page */
138 u_int8_t serial_num_len;
139 u_int8_t *serial_num;
140 u_int32_t qfrozen_cnt;
142 #define CAM_DEV_UNCONFIGURED 0x01
143 #define CAM_DEV_REL_TIMEOUT_PENDING 0x02
144 #define CAM_DEV_REL_ON_COMPLETE 0x04
145 #define CAM_DEV_REL_ON_QUEUE_EMPTY 0x08
146 #define CAM_DEV_RESIZE_QUEUE_NEEDED 0x10
147 #define CAM_DEV_TAG_AFTER_COUNT 0x20
148 #define CAM_DEV_INQUIRY_DATA_VALID 0x40
149 u_int32_t tag_delay_count;
150 #define CAM_TAG_DELAY_COUNT 5
152 struct callout_handle c_handle;
156 * Each target is represented by an ET (Existing Target). These
157 * entries are created when a target is successfully probed with an
158 * identify, and removed when a device fails to respond after a number
159 * of retries, or a bus rescan finds the device missing.
162 TAILQ_HEAD(, cam_ed) ed_entries;
163 TAILQ_ENTRY(cam_et) links;
165 target_id_t target_id;
168 struct timeval last_reset;
172 * Each bus is represented by an EB (Existing Bus). These entries
173 * are created by calls to xpt_bus_register and deleted by calls to
174 * xpt_bus_deregister.
177 TAILQ_HEAD(, cam_et) et_entries;
178 TAILQ_ENTRY(cam_eb) links;
181 struct timeval last_reset;
183 #define CAM_EB_RUNQ_SCHEDULED 0x01
189 struct cam_periph *periph;
191 struct cam_et *target;
192 struct cam_ed *device;
195 struct xpt_quirk_entry {
196 struct scsi_inquiry_pattern inq_pat;
198 #define CAM_QUIRK_NOLUNS 0x01
199 #define CAM_QUIRK_NOSERIAL 0x02
200 #define CAM_QUIRK_HILUNS 0x04
204 #define CAM_SCSI2_MAXLUN 8
212 u_int32_t generation;
215 static const char quantum[] = "QUANTUM";
216 static const char sony[] = "SONY";
217 static const char west_digital[] = "WDIGTL";
218 static const char samsung[] = "SAMSUNG";
219 static const char seagate[] = "SEAGATE";
220 static const char microp[] = "MICROP";
222 static struct xpt_quirk_entry xpt_quirk_table[] =
225 /* Reports QUEUE FULL for temporary resource shortages */
226 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP39100*", "*" },
227 /*quirks*/0, /*mintags*/24, /*maxtags*/32
230 /* Reports QUEUE FULL for temporary resource shortages */
231 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP34550*", "*" },
232 /*quirks*/0, /*mintags*/24, /*maxtags*/32
235 /* Reports QUEUE FULL for temporary resource shortages */
236 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP32275*", "*" },
237 /*quirks*/0, /*mintags*/24, /*maxtags*/32
240 /* Broken tagged queuing drive */
241 { T_DIRECT, SIP_MEDIA_FIXED, microp, "4421-07*", "*" },
242 /*quirks*/0, /*mintags*/0, /*maxtags*/0
245 /* Broken tagged queuing drive */
246 { T_DIRECT, SIP_MEDIA_FIXED, "HP", "C372*", "*" },
247 /*quirks*/0, /*mintags*/0, /*maxtags*/0
250 /* Broken tagged queuing drive */
251 { T_DIRECT, SIP_MEDIA_FIXED, microp, "3391*", "x43h" },
252 /*quirks*/0, /*mintags*/0, /*maxtags*/0
256 * Unfortunately, the Quantum Atlas III has the same
257 * problem as the Atlas II drives above.
258 * Reported by: "Johan Granlund" <johan@granlund.nu>
260 * For future reference, the drive with the problem was:
261 * QUANTUM QM39100TD-SW N1B0
263 * It's possible that Quantum will fix the problem in later
264 * firmware revisions. If that happens, the quirk entry
265 * will need to be made specific to the firmware revisions
269 /* Reports QUEUE FULL for temporary resource shortages */
270 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "QM39100*", "*" },
271 /*quirks*/0, /*mintags*/24, /*maxtags*/32
275 * 18 Gig Atlas III, same problem as the 9G version.
276 * Reported by: Andre Albsmeier
277 * <andre.albsmeier@mchp.siemens.de>
279 * For future reference, the drive with the problem was:
280 * QUANTUM QM318000TD-S N491
282 /* Reports QUEUE FULL for temporary resource shortages */
283 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "QM318000*", "*" },
284 /*quirks*/0, /*mintags*/24, /*maxtags*/32
288 * Broken tagged queuing drive
289 * Reported by: Bret Ford <bford@uop.cs.uop.edu>
290 * and: Martin Renters <martin@tdc.on.ca>
292 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST410800*", "71*" },
293 /*quirks*/0, /*mintags*/0, /*maxtags*/0
296 * The Seagate Medalist Pro drives have very poor write
297 * performance with anything more than 2 tags.
299 * Reported by: Paul van der Zwan <paulz@trantor.xs4all.nl>
300 * Drive: <SEAGATE ST36530N 1444>
302 * Reported by: Jeremy Lea <reg@shale.csir.co.za>
303 * Drive: <SEAGATE ST34520W 1281>
305 * No one has actually reported that the 9G version
306 * (ST39140*) of the Medalist Pro has the same problem, but
307 * we're assuming that it does because the 4G and 6.5G
308 * versions of the drive are broken.
311 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST34520*", "*"},
312 /*quirks*/0, /*mintags*/2, /*maxtags*/2
315 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST36530*", "*"},
316 /*quirks*/0, /*mintags*/2, /*maxtags*/2
319 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST39140*", "*"},
320 /*quirks*/0, /*mintags*/2, /*maxtags*/2
324 * Slow when tagged queueing is enabled. Write performance
325 * steadily drops off with more and more concurrent
326 * transactions. Best sequential write performance with
327 * tagged queueing turned off and write caching turned on.
330 * Submitted by: Hideaki Okada <hokada@isl.melco.co.jp>
331 * Drive: DCAS-34330 w/ "S65A" firmware.
333 * The drive with the problem had the "S65A" firmware
334 * revision, and has also been reported (by Stephen J.
335 * Roznowski <sjr@home.net>) for a drive with the "S61A"
338 * Although no one has reported problems with the 2 gig
339 * version of the DCAS drive, the assumption is that it
340 * has the same problems as the 4 gig version. Therefore
341 * this quirk entries disables tagged queueing for all
344 { T_DIRECT, SIP_MEDIA_FIXED, "IBM", "DCAS*", "*" },
345 /*quirks*/0, /*mintags*/0, /*maxtags*/0
348 /* Broken tagged queuing drive */
349 { T_DIRECT, SIP_MEDIA_REMOVABLE, "iomega", "jaz*", "*" },
350 /*quirks*/0, /*mintags*/0, /*maxtags*/0
353 /* Broken tagged queuing drive */
354 { T_DIRECT, SIP_MEDIA_FIXED, "CONNER", "CFP2107*", "*" },
355 /*quirks*/0, /*mintags*/0, /*maxtags*/0
359 * Broken tagged queuing drive.
361 * NAKAJI Hiroyuki <nakaji@zeisei.dpri.kyoto-u.ac.jp>
364 { T_DIRECT, SIP_MEDIA_FIXED, samsung, "WN34324U*", "*" },
365 /*quirks*/0, /*mintags*/0, /*maxtags*/0
369 * Slow when tagged queueing is enabled. (1.5MB/sec versus
371 * Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
372 * Best performance with these drives is achieved with
373 * tagged queueing turned off, and write caching turned on.
375 { T_DIRECT, SIP_MEDIA_FIXED, west_digital, "WDE*", "*" },
376 /*quirks*/0, /*mintags*/0, /*maxtags*/0
380 * Slow when tagged queueing is enabled. (1.5MB/sec versus
382 * Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
383 * Best performance with these drives is achieved with
384 * tagged queueing turned off, and write caching turned on.
386 { T_DIRECT, SIP_MEDIA_FIXED, west_digital, "ENTERPRISE", "*" },
387 /*quirks*/0, /*mintags*/0, /*maxtags*/0
391 * Doesn't handle queue full condition correctly,
392 * so we need to limit maxtags to what the device
393 * can handle instead of determining this automatically.
395 { T_DIRECT, SIP_MEDIA_FIXED, samsung, "WN321010S*", "*" },
396 /*quirks*/0, /*mintags*/2, /*maxtags*/32
399 /* Really only one LUN */
400 { T_ENCLOSURE, SIP_MEDIA_FIXED, "SUN", "SENA", "*" },
401 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
404 /* I can't believe we need a quirk for DPT volumes. */
405 { T_ANY, SIP_MEDIA_FIXED|SIP_MEDIA_REMOVABLE, "DPT", "*", "*" },
406 CAM_QUIRK_NOSERIAL|CAM_QUIRK_NOLUNS,
407 /*mintags*/0, /*maxtags*/255
411 * Many Sony CDROM drives don't like multi-LUN probing.
413 { T_CDROM, SIP_MEDIA_REMOVABLE, sony, "CD-ROM CDU*", "*" },
414 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
418 * This drive doesn't like multiple LUN probing.
419 * Submitted by: Parag Patel <parag@cgt.com>
421 { T_WORM, SIP_MEDIA_REMOVABLE, sony, "CD-R CDU9*", "*" },
422 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
425 { T_WORM, SIP_MEDIA_REMOVABLE, "YAMAHA", "CDR100*", "*" },
426 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
430 * The 8200 doesn't like multi-lun probing, and probably
431 * don't like serial number requests either.
434 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "EXABYTE",
437 CAM_QUIRK_NOSERIAL|CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
441 * Let's try the same as above, but for a drive that says
442 * it's an IPL-6860 but is actually an EXB 8200.
445 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "EXABYTE",
448 CAM_QUIRK_NOSERIAL|CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
452 * These Hitachi drives don't like multi-lun probing.
453 * The PR submitter has a DK319H, but says that the Linux
454 * kernel has a similar work-around for the DK312 and DK314,
455 * so all DK31* drives are quirked here.
457 * Submitted by: Paul Haddad <paul@pth.com>
459 { T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "DK31*", "*" },
460 CAM_QUIRK_NOLUNS, /*mintags*/2, /*maxtags*/255
464 * This old revision of the TDC3600 is also SCSI-1, and
465 * hangs upon serial number probing.
468 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
471 CAM_QUIRK_NOSERIAL, /*mintags*/0, /*maxtags*/0
475 * Would repond to all LUNs if asked for.
478 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "CALIPER",
481 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
485 * Would repond to all LUNs if asked for.
488 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY",
491 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
494 /* Submitted by: Matthew Dodd <winter@jurai.net> */
495 { T_PROCESSOR, SIP_MEDIA_FIXED, "Cabletrn", "EA41*", "*" },
496 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
499 /* Submitted by: Matthew Dodd <winter@jurai.net> */
500 { T_PROCESSOR, SIP_MEDIA_FIXED, "CABLETRN", "EA41*", "*" },
501 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
504 /* TeraSolutions special settings for TRC-22 RAID */
505 { T_DIRECT, SIP_MEDIA_FIXED, "TERASOLU", "TRC-22", "*" },
506 /*quirks*/0, /*mintags*/55, /*maxtags*/255
510 * Would respond to all LUNs. Device type and removable
511 * flag are jumper-selectable.
513 { T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED, "MaxOptix",
516 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
519 /* Default tagged queuing parameters for all devices */
521 T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED,
522 /*vendor*/"*", /*product*/"*", /*revision*/"*"
524 /*quirks*/0, /*mintags*/2, /*maxtags*/255
528 static const int xpt_quirk_table_size =
529 sizeof(xpt_quirk_table) / sizeof(*xpt_quirk_table);
533 DM_RET_FLAG_MASK = 0x0f,
536 DM_RET_DESCEND = 0x20,
538 DM_RET_ACTION_MASK = 0xf0
546 } xpt_traverse_depth;
548 struct xpt_traverse_config {
549 xpt_traverse_depth depth;
554 typedef int xpt_busfunc_t (struct cam_eb *bus, void *arg);
555 typedef int xpt_targetfunc_t (struct cam_et *target, void *arg);
556 typedef int xpt_devicefunc_t (struct cam_ed *device, void *arg);
557 typedef int xpt_periphfunc_t (struct cam_periph *periph, void *arg);
558 typedef int xpt_pdrvfunc_t (struct periph_driver **pdrv, void *arg);
560 /* Transport layer configuration information */
561 static struct xpt_softc xsoftc;
563 /* Queues for our software interrupt handler */
564 typedef TAILQ_HEAD(cam_isrq, ccb_hdr) cam_isrq_t;
565 static cam_isrq_t cam_bioq;
566 static cam_isrq_t cam_netq;
568 /* "Pool" of inactive ccbs managed by xpt_alloc_ccb and xpt_free_ccb */
569 static SLIST_HEAD(,ccb_hdr) ccb_freeq;
570 static u_int xpt_max_ccbs; /*
571 * Maximum size of ccb pool. Modified as
572 * devices are added/removed or have their
573 * opening counts changed.
575 static u_int xpt_ccb_count; /* Current count of allocated ccbs */
577 struct cam_periph *xpt_periph;
579 static periph_init_t xpt_periph_init;
581 static periph_init_t probe_periph_init;
583 static struct periph_driver xpt_driver =
585 xpt_periph_init, "xpt",
586 TAILQ_HEAD_INITIALIZER(xpt_driver.units)
589 static struct periph_driver probe_driver =
591 probe_periph_init, "probe",
592 TAILQ_HEAD_INITIALIZER(probe_driver.units)
595 PERIPHDRIVER_DECLARE(xpt, xpt_driver);
596 PERIPHDRIVER_DECLARE(probe, probe_driver);
598 #define XPT_CDEV_MAJOR 104
600 static d_open_t xptopen;
601 static d_close_t xptclose;
602 static d_ioctl_t xptioctl;
604 static struct cdevsw xpt_cdevsw = {
606 /* close */ xptclose,
609 /* ioctl */ xptioctl,
612 /* strategy */ nostrategy,
614 /* maj */ XPT_CDEV_MAJOR,
620 static struct intr_config_hook *xpt_config_hook;
622 /* Registered busses */
623 static TAILQ_HEAD(,cam_eb) xpt_busses;
624 static u_int bus_generation;
626 /* Storage for debugging datastructures */
628 struct cam_path *cam_dpath;
629 u_int32_t cam_dflags;
630 u_int32_t cam_debug_delay;
633 /* Pointers to software interrupt handlers */
637 #if defined(CAM_DEBUG_FLAGS) && !defined(CAMDEBUG)
638 #error "You must have options CAMDEBUG to use options CAM_DEBUG_FLAGS"
642 * In order to enable the CAM_DEBUG_* options, the user must have CAMDEBUG
643 * enabled. Also, the user must have either none, or all of CAM_DEBUG_BUS,
644 * CAM_DEBUG_TARGET, and CAM_DEBUG_LUN specified.
646 #if defined(CAM_DEBUG_BUS) || defined(CAM_DEBUG_TARGET) \
647 || defined(CAM_DEBUG_LUN)
649 #if !defined(CAM_DEBUG_BUS) || !defined(CAM_DEBUG_TARGET) \
650 || !defined(CAM_DEBUG_LUN)
651 #error "You must define all or none of CAM_DEBUG_BUS, CAM_DEBUG_TARGET \
653 #endif /* !CAM_DEBUG_BUS || !CAM_DEBUG_TARGET || !CAM_DEBUG_LUN */
654 #else /* !CAMDEBUG */
655 #error "You must use options CAMDEBUG if you use the CAM_DEBUG_* options"
656 #endif /* CAMDEBUG */
657 #endif /* CAM_DEBUG_BUS || CAM_DEBUG_TARGET || CAM_DEBUG_LUN */
659 /* Our boot-time initialization hook */
660 static int cam_module_event_handler(module_t, int /*modeventtype_t*/, void *);
662 static moduledata_t cam_moduledata = {
664 cam_module_event_handler,
668 static void xpt_init(void *);
670 DECLARE_MODULE(cam, cam_moduledata, SI_SUB_CONFIGURE, SI_ORDER_SECOND);
671 MODULE_VERSION(cam, 1);
674 static cam_status xpt_compile_path(struct cam_path *new_path,
675 struct cam_periph *perph,
677 target_id_t target_id,
680 static void xpt_release_path(struct cam_path *path);
682 static void xpt_async_bcast(struct async_list *async_head,
683 u_int32_t async_code,
684 struct cam_path *path,
686 static void xpt_dev_async(u_int32_t async_code,
688 struct cam_et *target,
689 struct cam_ed *device,
691 static path_id_t xptnextfreepathid(void);
692 static path_id_t xptpathid(const char *sim_name, int sim_unit, int sim_bus);
693 static union ccb *xpt_get_ccb(struct cam_ed *device);
694 static int xpt_schedule_dev(struct camq *queue, cam_pinfo *dev_pinfo,
695 u_int32_t new_priority);
696 static void xpt_run_dev_allocq(struct cam_eb *bus);
697 static void xpt_run_dev_sendq(struct cam_eb *bus);
698 static timeout_t xpt_release_devq_timeout;
699 static timeout_t xpt_release_simq_timeout;
700 static void xpt_release_bus(struct cam_eb *bus);
701 static void xpt_release_devq_device(struct cam_ed *dev, u_int count,
703 static struct cam_et*
704 xpt_alloc_target(struct cam_eb *bus, target_id_t target_id);
705 static void xpt_release_target(struct cam_eb *bus, struct cam_et *target);
706 static struct cam_ed*
707 xpt_alloc_device(struct cam_eb *bus, struct cam_et *target,
709 static void xpt_release_device(struct cam_eb *bus, struct cam_et *target,
710 struct cam_ed *device);
711 static u_int32_t xpt_dev_ccbq_resize(struct cam_path *path, int newopenings);
712 static struct cam_eb*
713 xpt_find_bus(path_id_t path_id);
714 static struct cam_et*
715 xpt_find_target(struct cam_eb *bus, target_id_t target_id);
716 static struct cam_ed*
717 xpt_find_device(struct cam_et *target, lun_id_t lun_id);
718 static void xpt_scan_bus(struct cam_periph *periph, union ccb *ccb);
719 static void xpt_scan_lun(struct cam_periph *periph,
720 struct cam_path *path, cam_flags flags,
722 static void xptscandone(struct cam_periph *periph, union ccb *done_ccb);
723 static xpt_busfunc_t xptconfigbuscountfunc;
724 static xpt_busfunc_t xptconfigfunc;
725 static void xpt_config(void *arg);
726 static xpt_devicefunc_t xptpassannouncefunc;
727 static void xpt_finishconfig(struct cam_periph *periph, union ccb *ccb);
728 static void xptaction(struct cam_sim *sim, union ccb *work_ccb);
729 static void xptpoll(struct cam_sim *sim);
730 static void camisr(void *);
732 static void xptstart(struct cam_periph *periph, union ccb *work_ccb);
733 static void xptasync(struct cam_periph *periph,
734 u_int32_t code, cam_path *path);
736 static dev_match_ret xptbusmatch(struct dev_match_pattern *patterns,
737 u_int num_patterns, struct cam_eb *bus);
738 static dev_match_ret xptdevicematch(struct dev_match_pattern *patterns,
740 struct cam_ed *device);
741 static dev_match_ret xptperiphmatch(struct dev_match_pattern *patterns,
743 struct cam_periph *periph);
744 static xpt_busfunc_t xptedtbusfunc;
745 static xpt_targetfunc_t xptedttargetfunc;
746 static xpt_devicefunc_t xptedtdevicefunc;
747 static xpt_periphfunc_t xptedtperiphfunc;
748 static xpt_pdrvfunc_t xptplistpdrvfunc;
749 static xpt_periphfunc_t xptplistperiphfunc;
750 static int xptedtmatch(struct ccb_dev_match *cdm);
751 static int xptperiphlistmatch(struct ccb_dev_match *cdm);
752 static int xptbustraverse(struct cam_eb *start_bus,
753 xpt_busfunc_t *tr_func, void *arg);
754 static int xpttargettraverse(struct cam_eb *bus,
755 struct cam_et *start_target,
756 xpt_targetfunc_t *tr_func, void *arg);
757 static int xptdevicetraverse(struct cam_et *target,
758 struct cam_ed *start_device,
759 xpt_devicefunc_t *tr_func, void *arg);
760 static int xptperiphtraverse(struct cam_ed *device,
761 struct cam_periph *start_periph,
762 xpt_periphfunc_t *tr_func, void *arg);
763 static int xptpdrvtraverse(struct periph_driver **start_pdrv,
764 xpt_pdrvfunc_t *tr_func, void *arg);
765 static int xptpdperiphtraverse(struct periph_driver **pdrv,
766 struct cam_periph *start_periph,
767 xpt_periphfunc_t *tr_func,
769 static xpt_busfunc_t xptdefbusfunc;
770 static xpt_targetfunc_t xptdeftargetfunc;
771 static xpt_devicefunc_t xptdefdevicefunc;
772 static xpt_periphfunc_t xptdefperiphfunc;
773 static int xpt_for_all_busses(xpt_busfunc_t *tr_func, void *arg);
775 static int xpt_for_all_targets(xpt_targetfunc_t *tr_func,
778 static int xpt_for_all_devices(xpt_devicefunc_t *tr_func,
781 static int xpt_for_all_periphs(xpt_periphfunc_t *tr_func,
784 static xpt_devicefunc_t xptsetasyncfunc;
785 static xpt_busfunc_t xptsetasyncbusfunc;
786 static cam_status xptregister(struct cam_periph *periph,
788 static cam_status proberegister(struct cam_periph *periph,
790 static void probeschedule(struct cam_periph *probe_periph);
791 static void probestart(struct cam_periph *periph, union ccb *start_ccb);
792 static void proberequestdefaultnegotiation(struct cam_periph *periph);
793 static void probedone(struct cam_periph *periph, union ccb *done_ccb);
794 static void probecleanup(struct cam_periph *periph);
795 static void xpt_find_quirk(struct cam_ed *device);
796 #ifdef CAM_NEW_TRAN_CODE
797 static void xpt_devise_transport(struct cam_path *path);
798 #endif /* CAM_NEW_TRAN_CODE */
799 static void xpt_set_transfer_settings(struct ccb_trans_settings *cts,
800 struct cam_ed *device,
802 static void xpt_toggle_tags(struct cam_path *path);
803 static void xpt_start_tags(struct cam_path *path);
804 static __inline int xpt_schedule_dev_allocq(struct cam_eb *bus,
806 static __inline int xpt_schedule_dev_sendq(struct cam_eb *bus,
808 static __inline int periph_is_queued(struct cam_periph *periph);
809 static __inline int device_is_alloc_queued(struct cam_ed *device);
810 static __inline int device_is_send_queued(struct cam_ed *device);
811 static __inline int dev_allocq_is_runnable(struct cam_devq *devq);
814 xpt_schedule_dev_allocq(struct cam_eb *bus, struct cam_ed *dev)
818 if (dev->ccbq.devq_openings > 0) {
819 if ((dev->flags & CAM_DEV_RESIZE_QUEUE_NEEDED) != 0) {
820 cam_ccbq_resize(&dev->ccbq,
821 dev->ccbq.dev_openings
822 + dev->ccbq.dev_active);
823 dev->flags &= ~CAM_DEV_RESIZE_QUEUE_NEEDED;
826 * The priority of a device waiting for CCB resources
827 * is that of the the highest priority peripheral driver
830 retval = xpt_schedule_dev(&bus->sim->devq->alloc_queue,
831 &dev->alloc_ccb_entry.pinfo,
832 CAMQ_GET_HEAD(&dev->drvq)->priority);
841 xpt_schedule_dev_sendq(struct cam_eb *bus, struct cam_ed *dev)
845 if (dev->ccbq.dev_openings > 0) {
847 * The priority of a device waiting for controller
848 * resources is that of the the highest priority CCB
852 xpt_schedule_dev(&bus->sim->devq->send_queue,
853 &dev->send_ccb_entry.pinfo,
854 CAMQ_GET_HEAD(&dev->ccbq.queue)->priority);
862 periph_is_queued(struct cam_periph *periph)
864 return (periph->pinfo.index != CAM_UNQUEUED_INDEX);
868 device_is_alloc_queued(struct cam_ed *device)
870 return (device->alloc_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX);
874 device_is_send_queued(struct cam_ed *device)
876 return (device->send_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX);
880 dev_allocq_is_runnable(struct cam_devq *devq)
884 * Have space to do more work.
885 * Allowed to do work.
887 return ((devq->alloc_queue.qfrozen_cnt == 0)
888 && (devq->alloc_queue.entries > 0)
889 && (devq->alloc_openings > 0));
895 make_dev(&xpt_cdevsw, 0, UID_ROOT, GID_OPERATOR, 0600, "xpt0");
905 xptdone(struct cam_periph *periph, union ccb *done_ccb)
907 /* Caller will release the CCB */
908 wakeup(&done_ccb->ccb_h.cbfcnp);
912 xptopen(dev_t dev, int flags, int fmt, struct thread *td)
916 unit = minor(dev) & 0xff;
919 * Only allow read-write access.
921 if (((flags & FWRITE) == 0) || ((flags & FREAD) == 0))
925 * We don't allow nonblocking access.
927 if ((flags & O_NONBLOCK) != 0) {
928 printf("xpt%d: can't do nonblocking accesss\n", unit);
933 * We only have one transport layer right now. If someone accesses
934 * us via something other than minor number 1, point out their
938 printf("xptopen: got invalid xpt unit %d\n", unit);
942 /* Mark ourselves open */
943 xsoftc.flags |= XPT_FLAG_OPEN;
949 xptclose(dev_t dev, int flag, int fmt, struct thread *td)
953 unit = minor(dev) & 0xff;
956 * We only have one transport layer right now. If someone accesses
957 * us via something other than minor number 1, point out their
961 printf("xptclose: got invalid xpt unit %d\n", unit);
965 /* Mark ourselves closed */
966 xsoftc.flags &= ~XPT_FLAG_OPEN;
972 xptioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct thread *td)
977 unit = minor(dev) & 0xff;
980 * We only have one transport layer right now. If someone accesses
981 * us via something other than minor number 1, point out their
985 printf("xptioctl: got invalid xpt unit %d\n", unit);
991 * For the transport layer CAMIOCOMMAND ioctl, we really only want
992 * to accept CCB types that don't quite make sense to send through a
993 * passthrough driver. XPT_PATH_INQ is an exception to this, as stated
1000 inccb = (union ccb *)addr;
1002 switch(inccb->ccb_h.func_code) {
1005 if ((inccb->ccb_h.target_id != CAM_TARGET_WILDCARD)
1006 || (inccb->ccb_h.target_lun != CAM_LUN_WILDCARD)) {
1015 ccb = xpt_alloc_ccb();
1018 * Create a path using the bus, target, and lun the
1021 if (xpt_create_path(&ccb->ccb_h.path, xpt_periph,
1022 inccb->ccb_h.path_id,
1023 inccb->ccb_h.target_id,
1024 inccb->ccb_h.target_lun) !=
1030 /* Ensure all of our fields are correct */
1031 xpt_setup_ccb(&ccb->ccb_h, ccb->ccb_h.path,
1032 inccb->ccb_h.pinfo.priority);
1033 xpt_merge_ccb(ccb, inccb);
1034 ccb->ccb_h.cbfcnp = xptdone;
1035 cam_periph_runccb(ccb, NULL, 0, 0, NULL);
1036 bcopy(ccb, inccb, sizeof(union ccb));
1037 xpt_free_path(ccb->ccb_h.path);
1045 * This is an immediate CCB, so it's okay to
1046 * allocate it on the stack.
1050 * Create a path using the bus, target, and lun the
1053 if (xpt_create_path(&ccb.ccb_h.path, xpt_periph,
1054 inccb->ccb_h.path_id,
1055 inccb->ccb_h.target_id,
1056 inccb->ccb_h.target_lun) !=
1061 /* Ensure all of our fields are correct */
1062 xpt_setup_ccb(&ccb.ccb_h, ccb.ccb_h.path,
1063 inccb->ccb_h.pinfo.priority);
1064 xpt_merge_ccb(&ccb, inccb);
1065 ccb.ccb_h.cbfcnp = xptdone;
1067 bcopy(&ccb, inccb, sizeof(union ccb));
1068 xpt_free_path(ccb.ccb_h.path);
1072 case XPT_DEV_MATCH: {
1073 struct cam_periph_map_info mapinfo;
1074 struct cam_path *old_path;
1077 * We can't deal with physical addresses for this
1078 * type of transaction.
1080 if (inccb->ccb_h.flags & CAM_DATA_PHYS) {
1086 * Save this in case the caller had it set to
1087 * something in particular.
1089 old_path = inccb->ccb_h.path;
1092 * We really don't need a path for the matching
1093 * code. The path is needed because of the
1094 * debugging statements in xpt_action(). They
1095 * assume that the CCB has a valid path.
1097 inccb->ccb_h.path = xpt_periph->path;
1099 bzero(&mapinfo, sizeof(mapinfo));
1102 * Map the pattern and match buffers into kernel
1103 * virtual address space.
1105 error = cam_periph_mapmem(inccb, &mapinfo);
1108 inccb->ccb_h.path = old_path;
1113 * This is an immediate CCB, we can send it on directly.
1118 * Map the buffers back into user space.
1120 cam_periph_unmapmem(inccb, &mapinfo);
1122 inccb->ccb_h.path = old_path;
1134 * This is the getpassthru ioctl. It takes a XPT_GDEVLIST ccb as input,
1135 * with the periphal driver name and unit name filled in. The other
1136 * fields don't really matter as input. The passthrough driver name
1137 * ("pass"), and unit number are passed back in the ccb. The current
1138 * device generation number, and the index into the device peripheral
1139 * driver list, and the status are also passed back. Note that
1140 * since we do everything in one pass, unlike the XPT_GDEVLIST ccb,
1141 * we never return a status of CAM_GDEVLIST_LIST_CHANGED. It is
1142 * (or rather should be) impossible for the device peripheral driver
1143 * list to change since we look at the whole thing in one pass, and
1144 * we do it with splcam protection.
1147 case CAMGETPASSTHRU: {
1149 struct cam_periph *periph;
1150 struct periph_driver **p_drv;
1153 u_int cur_generation;
1154 int base_periph_found;
1158 ccb = (union ccb *)addr;
1159 unit = ccb->cgdl.unit_number;
1160 name = ccb->cgdl.periph_name;
1162 * Every 100 devices, we want to drop our spl protection to
1163 * give the software interrupt handler a chance to run.
1164 * Most systems won't run into this check, but this should
1165 * avoid starvation in the software interrupt handler in
1170 ccb = (union ccb *)addr;
1172 base_periph_found = 0;
1175 * Sanity check -- make sure we don't get a null peripheral
1178 if (*ccb->cgdl.periph_name == '\0') {
1183 /* Keep the list from changing while we traverse it */
1186 cur_generation = xsoftc.generation;
1188 /* first find our driver in the list of drivers */
1189 for (p_drv = periph_drivers; *p_drv != NULL; p_drv++)
1190 if (strcmp((*p_drv)->driver_name, name) == 0)
1193 if (*p_drv == NULL) {
1195 ccb->ccb_h.status = CAM_REQ_CMP_ERR;
1196 ccb->cgdl.status = CAM_GDEVLIST_ERROR;
1197 *ccb->cgdl.periph_name = '\0';
1198 ccb->cgdl.unit_number = 0;
1204 * Run through every peripheral instance of this driver
1205 * and check to see whether it matches the unit passed
1206 * in by the user. If it does, get out of the loops and
1207 * find the passthrough driver associated with that
1208 * peripheral driver.
1210 for (periph = TAILQ_FIRST(&(*p_drv)->units); periph != NULL;
1211 periph = TAILQ_NEXT(periph, unit_links)) {
1213 if (periph->unit_number == unit) {
1215 } else if (--splbreaknum == 0) {
1219 if (cur_generation != xsoftc.generation)
1224 * If we found the peripheral driver that the user passed
1225 * in, go through all of the peripheral drivers for that
1226 * particular device and look for a passthrough driver.
1228 if (periph != NULL) {
1229 struct cam_ed *device;
1232 base_periph_found = 1;
1233 device = periph->path->device;
1234 for (i = 0, periph = SLIST_FIRST(&device->periphs);
1236 periph = SLIST_NEXT(periph, periph_links), i++) {
1238 * Check to see whether we have a
1239 * passthrough device or not.
1241 if (strcmp(periph->periph_name, "pass") == 0) {
1243 * Fill in the getdevlist fields.
1245 strcpy(ccb->cgdl.periph_name,
1246 periph->periph_name);
1247 ccb->cgdl.unit_number =
1248 periph->unit_number;
1249 if (SLIST_NEXT(periph, periph_links))
1251 CAM_GDEVLIST_MORE_DEVS;
1254 CAM_GDEVLIST_LAST_DEVICE;
1255 ccb->cgdl.generation =
1257 ccb->cgdl.index = i;
1259 * Fill in some CCB header fields
1260 * that the user may want.
1262 ccb->ccb_h.path_id =
1263 periph->path->bus->path_id;
1264 ccb->ccb_h.target_id =
1265 periph->path->target->target_id;
1266 ccb->ccb_h.target_lun =
1267 periph->path->device->lun_id;
1268 ccb->ccb_h.status = CAM_REQ_CMP;
1275 * If the periph is null here, one of two things has
1276 * happened. The first possibility is that we couldn't
1277 * find the unit number of the particular peripheral driver
1278 * that the user is asking about. e.g. the user asks for
1279 * the passthrough driver for "da11". We find the list of
1280 * "da" peripherals all right, but there is no unit 11.
1281 * The other possibility is that we went through the list
1282 * of peripheral drivers attached to the device structure,
1283 * but didn't find one with the name "pass". Either way,
1284 * we return ENOENT, since we couldn't find something.
1286 if (periph == NULL) {
1287 ccb->ccb_h.status = CAM_REQ_CMP_ERR;
1288 ccb->cgdl.status = CAM_GDEVLIST_ERROR;
1289 *ccb->cgdl.periph_name = '\0';
1290 ccb->cgdl.unit_number = 0;
1293 * It is unfortunate that this is even necessary,
1294 * but there are many, many clueless users out there.
1295 * If this is true, the user is looking for the
1296 * passthrough driver, but doesn't have one in his
1299 if (base_periph_found == 1) {
1300 printf("xptioctl: pass driver is not in the "
1302 printf("xptioctl: put \"device pass0\" in "
1303 "your kernel config file\n");
1318 cam_module_event_handler(module_t mod, int what, void *arg)
1320 if (what == MOD_LOAD) {
1322 } else if (what == MOD_UNLOAD) {
1329 /* Functions accessed by the peripheral drivers */
1334 struct cam_sim *xpt_sim;
1335 struct cam_path *path;
1336 struct cam_devq *devq;
1339 TAILQ_INIT(&xpt_busses);
1340 TAILQ_INIT(&cam_bioq);
1341 TAILQ_INIT(&cam_netq);
1342 SLIST_INIT(&ccb_freeq);
1343 STAILQ_INIT(&highpowerq);
1346 * The xpt layer is, itself, the equivelent of a SIM.
1347 * Allow 16 ccbs in the ccb pool for it. This should
1348 * give decent parallelism when we probe busses and
1349 * perform other XPT functions.
1351 devq = cam_simq_alloc(16);
1352 xpt_sim = cam_sim_alloc(xptaction,
1357 /*max_dev_transactions*/0,
1358 /*max_tagged_dev_transactions*/0,
1362 xpt_bus_register(xpt_sim, /*bus #*/0);
1365 * Looking at the XPT from the SIM layer, the XPT is
1366 * the equivelent of a peripheral driver. Allocate
1367 * a peripheral driver entry for us.
1369 if ((status = xpt_create_path(&path, NULL, CAM_XPT_PATH_ID,
1370 CAM_TARGET_WILDCARD,
1371 CAM_LUN_WILDCARD)) != CAM_REQ_CMP) {
1372 printf("xpt_init: xpt_create_path failed with status %#x,"
1373 " failing attach\n", status);
1377 cam_periph_alloc(xptregister, NULL, NULL, NULL, "xpt", CAM_PERIPH_BIO,
1378 path, NULL, 0, NULL);
1379 xpt_free_path(path);
1381 xpt_sim->softc = xpt_periph;
1384 * Register a callback for when interrupts are enabled.
1387 (struct intr_config_hook *)malloc(sizeof(struct intr_config_hook),
1388 M_TEMP, M_NOWAIT | M_ZERO);
1389 if (xpt_config_hook == NULL) {
1390 printf("xpt_init: Cannot malloc config hook "
1391 "- failing attach\n");
1395 xpt_config_hook->ich_func = xpt_config;
1396 if (config_intrhook_establish(xpt_config_hook) != 0) {
1397 free (xpt_config_hook, M_TEMP);
1398 printf("xpt_init: config_intrhook_establish failed "
1399 "- failing attach\n");
1402 /* Install our software interrupt handlers */
1403 swi_add(NULL, "camnet", camisr, &cam_netq, SWI_CAMNET, 0, &camnet_ih);
1404 swi_add(NULL, "cambio", camisr, &cam_bioq, SWI_CAMBIO, 0, &cambio_ih);
1408 xptregister(struct cam_periph *periph, void *arg)
1410 if (periph == NULL) {
1411 printf("xptregister: periph was NULL!!\n");
1412 return(CAM_REQ_CMP_ERR);
1415 periph->softc = NULL;
1417 xpt_periph = periph;
1419 return(CAM_REQ_CMP);
1423 xpt_add_periph(struct cam_periph *periph)
1425 struct cam_ed *device;
1427 struct periph_list *periph_head;
1429 device = periph->path->device;
1431 periph_head = &device->periphs;
1433 status = CAM_REQ_CMP;
1435 if (device != NULL) {
1439 * Make room for this peripheral
1440 * so it will fit in the queue
1441 * when it's scheduled to run
1444 status = camq_resize(&device->drvq,
1445 device->drvq.array_size + 1);
1447 device->generation++;
1449 SLIST_INSERT_HEAD(periph_head, periph, periph_links);
1454 xsoftc.generation++;
1460 xpt_remove_periph(struct cam_periph *periph)
1462 struct cam_ed *device;
1464 device = periph->path->device;
1466 if (device != NULL) {
1468 struct periph_list *periph_head;
1470 periph_head = &device->periphs;
1472 /* Release the slot for this peripheral */
1474 camq_resize(&device->drvq, device->drvq.array_size - 1);
1476 device->generation++;
1478 SLIST_REMOVE(periph_head, periph, cam_periph, periph_links);
1483 xsoftc.generation++;
1487 #ifdef CAM_NEW_TRAN_CODE
1490 xpt_announce_periph(struct cam_periph *periph, char *announce_string)
1492 struct ccb_pathinq cpi;
1493 struct ccb_trans_settings cts;
1494 struct cam_path *path;
1500 path = periph->path;
1502 * To ensure that this is printed in one piece,
1503 * mask out CAM interrupts.
1506 printf("%s%d at %s%d bus %d target %d lun %d\n",
1507 periph->periph_name, periph->unit_number,
1508 path->bus->sim->sim_name,
1509 path->bus->sim->unit_number,
1510 path->bus->sim->bus_id,
1511 path->target->target_id,
1512 path->device->lun_id);
1513 printf("%s%d: ", periph->periph_name, periph->unit_number);
1514 scsi_print_inquiry(&path->device->inq_data);
1515 if (bootverbose && path->device->serial_num_len > 0) {
1516 /* Don't wrap the screen - print only the first 60 chars */
1517 printf("%s%d: Serial Number %.60s\n", periph->periph_name,
1518 periph->unit_number, path->device->serial_num);
1520 xpt_setup_ccb(&cts.ccb_h, path, /*priority*/1);
1521 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
1522 cts.type = CTS_TYPE_CURRENT_SETTINGS;
1523 xpt_action((union ccb*)&cts);
1525 /* Ask the SIM for its base transfer speed */
1526 xpt_setup_ccb(&cpi.ccb_h, path, /*priority*/1);
1527 cpi.ccb_h.func_code = XPT_PATH_INQ;
1528 xpt_action((union ccb *)&cpi);
1530 speed = cpi.base_transfer_speed;
1532 if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_SPI) {
1533 struct ccb_trans_settings_spi *spi;
1535 spi = &cts.xport_specific.spi;
1536 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) != 0
1537 && spi->sync_offset != 0) {
1538 freq = scsi_calc_syncsrate(spi->sync_period);
1542 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0)
1543 speed *= (0x01 << spi->bus_width);
1546 if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_FC) {
1547 struct ccb_trans_settings_fc *fc = &cts.xport_specific.fc;
1548 if (fc->valid & CTS_FC_VALID_SPEED) {
1549 speed = fc->bitrate;
1555 printf("%s%d: %d.%03dMB/s transfers",
1556 periph->periph_name, periph->unit_number,
1559 printf("%s%d: %dKB/s transfers", periph->periph_name,
1560 periph->unit_number, speed);
1561 /* Report additional information about SPI connections */
1562 if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_SPI) {
1563 struct ccb_trans_settings_spi *spi;
1565 spi = &cts.xport_specific.spi;
1567 printf(" (%d.%03dMHz%s, offset %d", freq / 1000,
1569 (spi->ppr_options & MSG_EXT_PPR_DT_REQ) != 0
1573 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0
1574 && spi->bus_width > 0) {
1580 printf("%dbit)", 8 * (0x01 << spi->bus_width));
1581 } else if (freq != 0) {
1585 if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_FC) {
1586 struct ccb_trans_settings_fc *fc;
1588 fc = &cts.xport_specific.fc;
1589 if (fc->valid & CTS_FC_VALID_WWNN)
1590 printf(" WWNN 0x%llx", (long long) fc->wwnn);
1591 if (fc->valid & CTS_FC_VALID_WWPN)
1592 printf(" WWPN 0x%llx", (long long) fc->wwpn);
1593 if (fc->valid & CTS_FC_VALID_PORT)
1594 printf(" PortID 0x%x", fc->port);
1597 if (path->device->inq_flags & SID_CmdQue
1598 || path->device->flags & CAM_DEV_TAG_AFTER_COUNT) {
1599 printf("\n%s%d: Tagged Queueing Enabled",
1600 periph->periph_name, periph->unit_number);
1605 * We only want to print the caller's announce string if they've
1608 if (announce_string != NULL)
1609 printf("%s%d: %s\n", periph->periph_name,
1610 periph->unit_number, announce_string);
1613 #else /* CAM_NEW_TRAN_CODE */
1615 xpt_announce_periph(struct cam_periph *periph, char *announce_string)
1619 struct cam_path *path;
1620 struct ccb_trans_settings cts;
1622 path = periph->path;
1624 * To ensure that this is printed in one piece,
1625 * mask out CAM interrupts.
1628 printf("%s%d at %s%d bus %d target %d lun %d\n",
1629 periph->periph_name, periph->unit_number,
1630 path->bus->sim->sim_name,
1631 path->bus->sim->unit_number,
1632 path->bus->sim->bus_id,
1633 path->target->target_id,
1634 path->device->lun_id);
1635 printf("%s%d: ", periph->periph_name, periph->unit_number);
1636 scsi_print_inquiry(&path->device->inq_data);
1638 && (path->device->serial_num_len > 0)) {
1639 /* Don't wrap the screen - print only the first 60 chars */
1640 printf("%s%d: Serial Number %.60s\n", periph->periph_name,
1641 periph->unit_number, path->device->serial_num);
1643 xpt_setup_ccb(&cts.ccb_h, path, /*priority*/1);
1644 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
1645 cts.flags = CCB_TRANS_CURRENT_SETTINGS;
1646 xpt_action((union ccb*)&cts);
1647 if (cts.ccb_h.status == CAM_REQ_CMP) {
1651 if ((cts.valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0
1652 && cts.sync_offset != 0) {
1653 freq = scsi_calc_syncsrate(cts.sync_period);
1656 struct ccb_pathinq cpi;
1658 /* Ask the SIM for its base transfer speed */
1659 xpt_setup_ccb(&cpi.ccb_h, path, /*priority*/1);
1660 cpi.ccb_h.func_code = XPT_PATH_INQ;
1661 xpt_action((union ccb *)&cpi);
1663 speed = cpi.base_transfer_speed;
1666 if ((cts.valid & CCB_TRANS_BUS_WIDTH_VALID) != 0)
1667 speed *= (0x01 << cts.bus_width);
1670 printf("%s%d: %d.%03dMB/s transfers",
1671 periph->periph_name, periph->unit_number,
1674 printf("%s%d: %dKB/s transfers", periph->periph_name,
1675 periph->unit_number, speed);
1676 if ((cts.valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0
1677 && cts.sync_offset != 0) {
1678 printf(" (%d.%03dMHz, offset %d", freq / 1000,
1679 freq % 1000, cts.sync_offset);
1681 if ((cts.valid & CCB_TRANS_BUS_WIDTH_VALID) != 0
1682 && cts.bus_width > 0) {
1683 if ((cts.valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0
1684 && cts.sync_offset != 0) {
1689 printf("%dbit)", 8 * (0x01 << cts.bus_width));
1690 } else if ((cts.valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0
1691 && cts.sync_offset != 0) {
1695 if (path->device->inq_flags & SID_CmdQue
1696 || path->device->flags & CAM_DEV_TAG_AFTER_COUNT) {
1697 printf(", Tagged Queueing Enabled");
1701 } else if (path->device->inq_flags & SID_CmdQue
1702 || path->device->flags & CAM_DEV_TAG_AFTER_COUNT) {
1703 printf("%s%d: Tagged Queueing Enabled\n",
1704 periph->periph_name, periph->unit_number);
1708 * We only want to print the caller's announce string if they've
1711 if (announce_string != NULL)
1712 printf("%s%d: %s\n", periph->periph_name,
1713 periph->unit_number, announce_string);
1717 #endif /* CAM_NEW_TRAN_CODE */
1719 static dev_match_ret
1720 xptbusmatch(struct dev_match_pattern *patterns, u_int num_patterns,
1723 dev_match_ret retval;
1726 retval = DM_RET_NONE;
1729 * If we aren't given something to match against, that's an error.
1732 return(DM_RET_ERROR);
1735 * If there are no match entries, then this bus matches no
1738 if ((patterns == NULL) || (num_patterns == 0))
1739 return(DM_RET_DESCEND | DM_RET_COPY);
1741 for (i = 0; i < num_patterns; i++) {
1742 struct bus_match_pattern *cur_pattern;
1745 * If the pattern in question isn't for a bus node, we
1746 * aren't interested. However, we do indicate to the
1747 * calling routine that we should continue descending the
1748 * tree, since the user wants to match against lower-level
1751 if (patterns[i].type != DEV_MATCH_BUS) {
1752 if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)
1753 retval |= DM_RET_DESCEND;
1757 cur_pattern = &patterns[i].pattern.bus_pattern;
1760 * If they want to match any bus node, we give them any
1763 if (cur_pattern->flags == BUS_MATCH_ANY) {
1764 /* set the copy flag */
1765 retval |= DM_RET_COPY;
1768 * If we've already decided on an action, go ahead
1771 if ((retval & DM_RET_ACTION_MASK) != DM_RET_NONE)
1776 * Not sure why someone would do this...
1778 if (cur_pattern->flags == BUS_MATCH_NONE)
1781 if (((cur_pattern->flags & BUS_MATCH_PATH) != 0)
1782 && (cur_pattern->path_id != bus->path_id))
1785 if (((cur_pattern->flags & BUS_MATCH_BUS_ID) != 0)
1786 && (cur_pattern->bus_id != bus->sim->bus_id))
1789 if (((cur_pattern->flags & BUS_MATCH_UNIT) != 0)
1790 && (cur_pattern->unit_number != bus->sim->unit_number))
1793 if (((cur_pattern->flags & BUS_MATCH_NAME) != 0)
1794 && (strncmp(cur_pattern->dev_name, bus->sim->sim_name,
1799 * If we get to this point, the user definitely wants
1800 * information on this bus. So tell the caller to copy the
1803 retval |= DM_RET_COPY;
1806 * If the return action has been set to descend, then we
1807 * know that we've already seen a non-bus matching
1808 * expression, therefore we need to further descend the tree.
1809 * This won't change by continuing around the loop, so we
1810 * go ahead and return. If we haven't seen a non-bus
1811 * matching expression, we keep going around the loop until
1812 * we exhaust the matching expressions. We'll set the stop
1813 * flag once we fall out of the loop.
1815 if ((retval & DM_RET_ACTION_MASK) == DM_RET_DESCEND)
1820 * If the return action hasn't been set to descend yet, that means
1821 * we haven't seen anything other than bus matching patterns. So
1822 * tell the caller to stop descending the tree -- the user doesn't
1823 * want to match against lower level tree elements.
1825 if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)
1826 retval |= DM_RET_STOP;
1831 static dev_match_ret
1832 xptdevicematch(struct dev_match_pattern *patterns, u_int num_patterns,
1833 struct cam_ed *device)
1835 dev_match_ret retval;
1838 retval = DM_RET_NONE;
1841 * If we aren't given something to match against, that's an error.
1844 return(DM_RET_ERROR);
1847 * If there are no match entries, then this device matches no
1850 if ((patterns == NULL) || (patterns == 0))
1851 return(DM_RET_DESCEND | DM_RET_COPY);
1853 for (i = 0; i < num_patterns; i++) {
1854 struct device_match_pattern *cur_pattern;
1857 * If the pattern in question isn't for a device node, we
1858 * aren't interested.
1860 if (patterns[i].type != DEV_MATCH_DEVICE) {
1861 if ((patterns[i].type == DEV_MATCH_PERIPH)
1862 && ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE))
1863 retval |= DM_RET_DESCEND;
1867 cur_pattern = &patterns[i].pattern.device_pattern;
1870 * If they want to match any device node, we give them any
1873 if (cur_pattern->flags == DEV_MATCH_ANY) {
1874 /* set the copy flag */
1875 retval |= DM_RET_COPY;
1879 * If we've already decided on an action, go ahead
1882 if ((retval & DM_RET_ACTION_MASK) != DM_RET_NONE)
1887 * Not sure why someone would do this...
1889 if (cur_pattern->flags == DEV_MATCH_NONE)
1892 if (((cur_pattern->flags & DEV_MATCH_PATH) != 0)
1893 && (cur_pattern->path_id != device->target->bus->path_id))
1896 if (((cur_pattern->flags & DEV_MATCH_TARGET) != 0)
1897 && (cur_pattern->target_id != device->target->target_id))
1900 if (((cur_pattern->flags & DEV_MATCH_LUN) != 0)
1901 && (cur_pattern->target_lun != device->lun_id))
1904 if (((cur_pattern->flags & DEV_MATCH_INQUIRY) != 0)
1905 && (cam_quirkmatch((caddr_t)&device->inq_data,
1906 (caddr_t)&cur_pattern->inq_pat,
1907 1, sizeof(cur_pattern->inq_pat),
1908 scsi_static_inquiry_match) == NULL))
1912 * If we get to this point, the user definitely wants
1913 * information on this device. So tell the caller to copy
1916 retval |= DM_RET_COPY;
1919 * If the return action has been set to descend, then we
1920 * know that we've already seen a peripheral matching
1921 * expression, therefore we need to further descend the tree.
1922 * This won't change by continuing around the loop, so we
1923 * go ahead and return. If we haven't seen a peripheral
1924 * matching expression, we keep going around the loop until
1925 * we exhaust the matching expressions. We'll set the stop
1926 * flag once we fall out of the loop.
1928 if ((retval & DM_RET_ACTION_MASK) == DM_RET_DESCEND)
1933 * If the return action hasn't been set to descend yet, that means
1934 * we haven't seen any peripheral matching patterns. So tell the
1935 * caller to stop descending the tree -- the user doesn't want to
1936 * match against lower level tree elements.
1938 if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)
1939 retval |= DM_RET_STOP;
1945 * Match a single peripheral against any number of match patterns.
1947 static dev_match_ret
1948 xptperiphmatch(struct dev_match_pattern *patterns, u_int num_patterns,
1949 struct cam_periph *periph)
1951 dev_match_ret retval;
1955 * If we aren't given something to match against, that's an error.
1958 return(DM_RET_ERROR);
1961 * If there are no match entries, then this peripheral matches no
1964 if ((patterns == NULL) || (num_patterns == 0))
1965 return(DM_RET_STOP | DM_RET_COPY);
1968 * There aren't any nodes below a peripheral node, so there's no
1969 * reason to descend the tree any further.
1971 retval = DM_RET_STOP;
1973 for (i = 0; i < num_patterns; i++) {
1974 struct periph_match_pattern *cur_pattern;
1977 * If the pattern in question isn't for a peripheral, we
1978 * aren't interested.
1980 if (patterns[i].type != DEV_MATCH_PERIPH)
1983 cur_pattern = &patterns[i].pattern.periph_pattern;
1986 * If they want to match on anything, then we will do so.
1988 if (cur_pattern->flags == PERIPH_MATCH_ANY) {
1989 /* set the copy flag */
1990 retval |= DM_RET_COPY;
1993 * We've already set the return action to stop,
1994 * since there are no nodes below peripherals in
2001 * Not sure why someone would do this...
2003 if (cur_pattern->flags == PERIPH_MATCH_NONE)
2006 if (((cur_pattern->flags & PERIPH_MATCH_PATH) != 0)
2007 && (cur_pattern->path_id != periph->path->bus->path_id))
2011 * For the target and lun id's, we have to make sure the
2012 * target and lun pointers aren't NULL. The xpt peripheral
2013 * has a wildcard target and device.
2015 if (((cur_pattern->flags & PERIPH_MATCH_TARGET) != 0)
2016 && ((periph->path->target == NULL)
2017 ||(cur_pattern->target_id != periph->path->target->target_id)))
2020 if (((cur_pattern->flags & PERIPH_MATCH_LUN) != 0)
2021 && ((periph->path->device == NULL)
2022 || (cur_pattern->target_lun != periph->path->device->lun_id)))
2025 if (((cur_pattern->flags & PERIPH_MATCH_UNIT) != 0)
2026 && (cur_pattern->unit_number != periph->unit_number))
2029 if (((cur_pattern->flags & PERIPH_MATCH_NAME) != 0)
2030 && (strncmp(cur_pattern->periph_name, periph->periph_name,
2035 * If we get to this point, the user definitely wants
2036 * information on this peripheral. So tell the caller to
2037 * copy the data out.
2039 retval |= DM_RET_COPY;
2042 * The return action has already been set to stop, since
2043 * peripherals don't have any nodes below them in the EDT.
2049 * If we get to this point, the peripheral that was passed in
2050 * doesn't match any of the patterns.
2056 xptedtbusfunc(struct cam_eb *bus, void *arg)
2058 struct ccb_dev_match *cdm;
2059 dev_match_ret retval;
2061 cdm = (struct ccb_dev_match *)arg;
2064 * If our position is for something deeper in the tree, that means
2065 * that we've already seen this node. So, we keep going down.
2067 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2068 && (cdm->pos.cookie.bus == bus)
2069 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2070 && (cdm->pos.cookie.target != NULL))
2071 retval = DM_RET_DESCEND;
2073 retval = xptbusmatch(cdm->patterns, cdm->num_patterns, bus);
2076 * If we got an error, bail out of the search.
2078 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
2079 cdm->status = CAM_DEV_MATCH_ERROR;
2084 * If the copy flag is set, copy this bus out.
2086 if (retval & DM_RET_COPY) {
2089 spaceleft = cdm->match_buf_len - (cdm->num_matches *
2090 sizeof(struct dev_match_result));
2093 * If we don't have enough space to put in another
2094 * match result, save our position and tell the
2095 * user there are more devices to check.
2097 if (spaceleft < sizeof(struct dev_match_result)) {
2098 bzero(&cdm->pos, sizeof(cdm->pos));
2099 cdm->pos.position_type =
2100 CAM_DEV_POS_EDT | CAM_DEV_POS_BUS;
2102 cdm->pos.cookie.bus = bus;
2103 cdm->pos.generations[CAM_BUS_GENERATION]=
2105 cdm->status = CAM_DEV_MATCH_MORE;
2108 j = cdm->num_matches;
2110 cdm->matches[j].type = DEV_MATCH_BUS;
2111 cdm->matches[j].result.bus_result.path_id = bus->path_id;
2112 cdm->matches[j].result.bus_result.bus_id = bus->sim->bus_id;
2113 cdm->matches[j].result.bus_result.unit_number =
2114 bus->sim->unit_number;
2115 strncpy(cdm->matches[j].result.bus_result.dev_name,
2116 bus->sim->sim_name, DEV_IDLEN);
2120 * If the user is only interested in busses, there's no
2121 * reason to descend to the next level in the tree.
2123 if ((retval & DM_RET_ACTION_MASK) == DM_RET_STOP)
2127 * If there is a target generation recorded, check it to
2128 * make sure the target list hasn't changed.
2130 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2131 && (bus == cdm->pos.cookie.bus)
2132 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2133 && (cdm->pos.generations[CAM_TARGET_GENERATION] != 0)
2134 && (cdm->pos.generations[CAM_TARGET_GENERATION] !=
2136 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2140 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2141 && (cdm->pos.cookie.bus == bus)
2142 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2143 && (cdm->pos.cookie.target != NULL))
2144 return(xpttargettraverse(bus,
2145 (struct cam_et *)cdm->pos.cookie.target,
2146 xptedttargetfunc, arg));
2148 return(xpttargettraverse(bus, NULL, xptedttargetfunc, arg));
2152 xptedttargetfunc(struct cam_et *target, void *arg)
2154 struct ccb_dev_match *cdm;
2156 cdm = (struct ccb_dev_match *)arg;
2159 * If there is a device list generation recorded, check it to
2160 * make sure the device list hasn't changed.
2162 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2163 && (cdm->pos.cookie.bus == target->bus)
2164 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2165 && (cdm->pos.cookie.target == target)
2166 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2167 && (cdm->pos.generations[CAM_DEV_GENERATION] != 0)
2168 && (cdm->pos.generations[CAM_DEV_GENERATION] !=
2169 target->generation)) {
2170 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2174 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2175 && (cdm->pos.cookie.bus == target->bus)
2176 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2177 && (cdm->pos.cookie.target == target)
2178 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2179 && (cdm->pos.cookie.device != NULL))
2180 return(xptdevicetraverse(target,
2181 (struct cam_ed *)cdm->pos.cookie.device,
2182 xptedtdevicefunc, arg));
2184 return(xptdevicetraverse(target, NULL, xptedtdevicefunc, arg));
2188 xptedtdevicefunc(struct cam_ed *device, void *arg)
2191 struct ccb_dev_match *cdm;
2192 dev_match_ret retval;
2194 cdm = (struct ccb_dev_match *)arg;
2197 * If our position is for something deeper in the tree, that means
2198 * that we've already seen this node. So, we keep going down.
2200 if ((cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2201 && (cdm->pos.cookie.device == device)
2202 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2203 && (cdm->pos.cookie.periph != NULL))
2204 retval = DM_RET_DESCEND;
2206 retval = xptdevicematch(cdm->patterns, cdm->num_patterns,
2209 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
2210 cdm->status = CAM_DEV_MATCH_ERROR;
2215 * If the copy flag is set, copy this device out.
2217 if (retval & DM_RET_COPY) {
2220 spaceleft = cdm->match_buf_len - (cdm->num_matches *
2221 sizeof(struct dev_match_result));
2224 * If we don't have enough space to put in another
2225 * match result, save our position and tell the
2226 * user there are more devices to check.
2228 if (spaceleft < sizeof(struct dev_match_result)) {
2229 bzero(&cdm->pos, sizeof(cdm->pos));
2230 cdm->pos.position_type =
2231 CAM_DEV_POS_EDT | CAM_DEV_POS_BUS |
2232 CAM_DEV_POS_TARGET | CAM_DEV_POS_DEVICE;
2234 cdm->pos.cookie.bus = device->target->bus;
2235 cdm->pos.generations[CAM_BUS_GENERATION]=
2237 cdm->pos.cookie.target = device->target;
2238 cdm->pos.generations[CAM_TARGET_GENERATION] =
2239 device->target->bus->generation;
2240 cdm->pos.cookie.device = device;
2241 cdm->pos.generations[CAM_DEV_GENERATION] =
2242 device->target->generation;
2243 cdm->status = CAM_DEV_MATCH_MORE;
2246 j = cdm->num_matches;
2248 cdm->matches[j].type = DEV_MATCH_DEVICE;
2249 cdm->matches[j].result.device_result.path_id =
2250 device->target->bus->path_id;
2251 cdm->matches[j].result.device_result.target_id =
2252 device->target->target_id;
2253 cdm->matches[j].result.device_result.target_lun =
2255 bcopy(&device->inq_data,
2256 &cdm->matches[j].result.device_result.inq_data,
2257 sizeof(struct scsi_inquiry_data));
2259 /* Let the user know whether this device is unconfigured */
2260 if (device->flags & CAM_DEV_UNCONFIGURED)
2261 cdm->matches[j].result.device_result.flags =
2262 DEV_RESULT_UNCONFIGURED;
2264 cdm->matches[j].result.device_result.flags =
2269 * If the user isn't interested in peripherals, don't descend
2270 * the tree any further.
2272 if ((retval & DM_RET_ACTION_MASK) == DM_RET_STOP)
2276 * If there is a peripheral list generation recorded, make sure
2277 * it hasn't changed.
2279 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2280 && (device->target->bus == cdm->pos.cookie.bus)
2281 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2282 && (device->target == cdm->pos.cookie.target)
2283 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2284 && (device == cdm->pos.cookie.device)
2285 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2286 && (cdm->pos.generations[CAM_PERIPH_GENERATION] != 0)
2287 && (cdm->pos.generations[CAM_PERIPH_GENERATION] !=
2288 device->generation)){
2289 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2293 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2294 && (cdm->pos.cookie.bus == device->target->bus)
2295 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2296 && (cdm->pos.cookie.target == device->target)
2297 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2298 && (cdm->pos.cookie.device == device)
2299 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2300 && (cdm->pos.cookie.periph != NULL))
2301 return(xptperiphtraverse(device,
2302 (struct cam_periph *)cdm->pos.cookie.periph,
2303 xptedtperiphfunc, arg));
2305 return(xptperiphtraverse(device, NULL, xptedtperiphfunc, arg));
2309 xptedtperiphfunc(struct cam_periph *periph, void *arg)
2311 struct ccb_dev_match *cdm;
2312 dev_match_ret retval;
2314 cdm = (struct ccb_dev_match *)arg;
2316 retval = xptperiphmatch(cdm->patterns, cdm->num_patterns, periph);
2318 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
2319 cdm->status = CAM_DEV_MATCH_ERROR;
2324 * If the copy flag is set, copy this peripheral out.
2326 if (retval & DM_RET_COPY) {
2329 spaceleft = cdm->match_buf_len - (cdm->num_matches *
2330 sizeof(struct dev_match_result));
2333 * If we don't have enough space to put in another
2334 * match result, save our position and tell the
2335 * user there are more devices to check.
2337 if (spaceleft < sizeof(struct dev_match_result)) {
2338 bzero(&cdm->pos, sizeof(cdm->pos));
2339 cdm->pos.position_type =
2340 CAM_DEV_POS_EDT | CAM_DEV_POS_BUS |
2341 CAM_DEV_POS_TARGET | CAM_DEV_POS_DEVICE |
2344 cdm->pos.cookie.bus = periph->path->bus;
2345 cdm->pos.generations[CAM_BUS_GENERATION]=
2347 cdm->pos.cookie.target = periph->path->target;
2348 cdm->pos.generations[CAM_TARGET_GENERATION] =
2349 periph->path->bus->generation;
2350 cdm->pos.cookie.device = periph->path->device;
2351 cdm->pos.generations[CAM_DEV_GENERATION] =
2352 periph->path->target->generation;
2353 cdm->pos.cookie.periph = periph;
2354 cdm->pos.generations[CAM_PERIPH_GENERATION] =
2355 periph->path->device->generation;
2356 cdm->status = CAM_DEV_MATCH_MORE;
2360 j = cdm->num_matches;
2362 cdm->matches[j].type = DEV_MATCH_PERIPH;
2363 cdm->matches[j].result.periph_result.path_id =
2364 periph->path->bus->path_id;
2365 cdm->matches[j].result.periph_result.target_id =
2366 periph->path->target->target_id;
2367 cdm->matches[j].result.periph_result.target_lun =
2368 periph->path->device->lun_id;
2369 cdm->matches[j].result.periph_result.unit_number =
2370 periph->unit_number;
2371 strncpy(cdm->matches[j].result.periph_result.periph_name,
2372 periph->periph_name, DEV_IDLEN);
2379 xptedtmatch(struct ccb_dev_match *cdm)
2383 cdm->num_matches = 0;
2386 * Check the bus list generation. If it has changed, the user
2387 * needs to reset everything and start over.
2389 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2390 && (cdm->pos.generations[CAM_BUS_GENERATION] != 0)
2391 && (cdm->pos.generations[CAM_BUS_GENERATION] != bus_generation)) {
2392 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2396 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2397 && (cdm->pos.cookie.bus != NULL))
2398 ret = xptbustraverse((struct cam_eb *)cdm->pos.cookie.bus,
2399 xptedtbusfunc, cdm);
2401 ret = xptbustraverse(NULL, xptedtbusfunc, cdm);
2404 * If we get back 0, that means that we had to stop before fully
2405 * traversing the EDT. It also means that one of the subroutines
2406 * has set the status field to the proper value. If we get back 1,
2407 * we've fully traversed the EDT and copied out any matching entries.
2410 cdm->status = CAM_DEV_MATCH_LAST;
2416 xptplistpdrvfunc(struct periph_driver **pdrv, void *arg)
2418 struct ccb_dev_match *cdm;
2420 cdm = (struct ccb_dev_match *)arg;
2422 if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR)
2423 && (cdm->pos.cookie.pdrv == pdrv)
2424 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2425 && (cdm->pos.generations[CAM_PERIPH_GENERATION] != 0)
2426 && (cdm->pos.generations[CAM_PERIPH_GENERATION] !=
2427 (*pdrv)->generation)) {
2428 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2432 if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR)
2433 && (cdm->pos.cookie.pdrv == pdrv)
2434 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2435 && (cdm->pos.cookie.periph != NULL))
2436 return(xptpdperiphtraverse(pdrv,
2437 (struct cam_periph *)cdm->pos.cookie.periph,
2438 xptplistperiphfunc, arg));
2440 return(xptpdperiphtraverse(pdrv, NULL,xptplistperiphfunc, arg));
2444 xptplistperiphfunc(struct cam_periph *periph, void *arg)
2446 struct ccb_dev_match *cdm;
2447 dev_match_ret retval;
2449 cdm = (struct ccb_dev_match *)arg;
2451 retval = xptperiphmatch(cdm->patterns, cdm->num_patterns, periph);
2453 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
2454 cdm->status = CAM_DEV_MATCH_ERROR;
2459 * If the copy flag is set, copy this peripheral out.
2461 if (retval & DM_RET_COPY) {
2464 spaceleft = cdm->match_buf_len - (cdm->num_matches *
2465 sizeof(struct dev_match_result));
2468 * If we don't have enough space to put in another
2469 * match result, save our position and tell the
2470 * user there are more devices to check.
2472 if (spaceleft < sizeof(struct dev_match_result)) {
2473 struct periph_driver **pdrv;
2476 bzero(&cdm->pos, sizeof(cdm->pos));
2477 cdm->pos.position_type =
2478 CAM_DEV_POS_PDRV | CAM_DEV_POS_PDPTR |
2482 * This may look a bit non-sensical, but it is
2483 * actually quite logical. There are very few
2484 * peripheral drivers, and bloating every peripheral
2485 * structure with a pointer back to its parent
2486 * peripheral driver linker set entry would cost
2487 * more in the long run than doing this quick lookup.
2489 for (pdrv = periph_drivers; *pdrv != NULL; pdrv++) {
2490 if (strcmp((*pdrv)->driver_name,
2491 periph->periph_name) == 0)
2496 cdm->status = CAM_DEV_MATCH_ERROR;
2500 cdm->pos.cookie.pdrv = pdrv;
2502 * The periph generation slot does double duty, as
2503 * does the periph pointer slot. They are used for
2504 * both edt and pdrv lookups and positioning.
2506 cdm->pos.cookie.periph = periph;
2507 cdm->pos.generations[CAM_PERIPH_GENERATION] =
2508 (*pdrv)->generation;
2509 cdm->status = CAM_DEV_MATCH_MORE;
2513 j = cdm->num_matches;
2515 cdm->matches[j].type = DEV_MATCH_PERIPH;
2516 cdm->matches[j].result.periph_result.path_id =
2517 periph->path->bus->path_id;
2520 * The transport layer peripheral doesn't have a target or
2523 if (periph->path->target)
2524 cdm->matches[j].result.periph_result.target_id =
2525 periph->path->target->target_id;
2527 cdm->matches[j].result.periph_result.target_id = -1;
2529 if (periph->path->device)
2530 cdm->matches[j].result.periph_result.target_lun =
2531 periph->path->device->lun_id;
2533 cdm->matches[j].result.periph_result.target_lun = -1;
2535 cdm->matches[j].result.periph_result.unit_number =
2536 periph->unit_number;
2537 strncpy(cdm->matches[j].result.periph_result.periph_name,
2538 periph->periph_name, DEV_IDLEN);
2545 xptperiphlistmatch(struct ccb_dev_match *cdm)
2549 cdm->num_matches = 0;
2552 * At this point in the edt traversal function, we check the bus
2553 * list generation to make sure that no busses have been added or
2554 * removed since the user last sent a XPT_DEV_MATCH ccb through.
2555 * For the peripheral driver list traversal function, however, we
2556 * don't have to worry about new peripheral driver types coming or
2557 * going; they're in a linker set, and therefore can't change
2558 * without a recompile.
2561 if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR)
2562 && (cdm->pos.cookie.pdrv != NULL))
2563 ret = xptpdrvtraverse(
2564 (struct periph_driver **)cdm->pos.cookie.pdrv,
2565 xptplistpdrvfunc, cdm);
2567 ret = xptpdrvtraverse(NULL, xptplistpdrvfunc, cdm);
2570 * If we get back 0, that means that we had to stop before fully
2571 * traversing the peripheral driver tree. It also means that one of
2572 * the subroutines has set the status field to the proper value. If
2573 * we get back 1, we've fully traversed the EDT and copied out any
2577 cdm->status = CAM_DEV_MATCH_LAST;
2583 xptbustraverse(struct cam_eb *start_bus, xpt_busfunc_t *tr_func, void *arg)
2585 struct cam_eb *bus, *next_bus;
2590 for (bus = (start_bus ? start_bus : TAILQ_FIRST(&xpt_busses));
2593 next_bus = TAILQ_NEXT(bus, links);
2595 retval = tr_func(bus, arg);
2604 xpttargettraverse(struct cam_eb *bus, struct cam_et *start_target,
2605 xpt_targetfunc_t *tr_func, void *arg)
2607 struct cam_et *target, *next_target;
2611 for (target = (start_target ? start_target :
2612 TAILQ_FIRST(&bus->et_entries));
2613 target != NULL; target = next_target) {
2615 next_target = TAILQ_NEXT(target, links);
2617 retval = tr_func(target, arg);
2627 xptdevicetraverse(struct cam_et *target, struct cam_ed *start_device,
2628 xpt_devicefunc_t *tr_func, void *arg)
2630 struct cam_ed *device, *next_device;
2634 for (device = (start_device ? start_device :
2635 TAILQ_FIRST(&target->ed_entries));
2637 device = next_device) {
2639 next_device = TAILQ_NEXT(device, links);
2641 retval = tr_func(device, arg);
2651 xptperiphtraverse(struct cam_ed *device, struct cam_periph *start_periph,
2652 xpt_periphfunc_t *tr_func, void *arg)
2654 struct cam_periph *periph, *next_periph;
2659 for (periph = (start_periph ? start_periph :
2660 SLIST_FIRST(&device->periphs));
2662 periph = next_periph) {
2664 next_periph = SLIST_NEXT(periph, periph_links);
2666 retval = tr_func(periph, arg);
2675 xptpdrvtraverse(struct periph_driver **start_pdrv,
2676 xpt_pdrvfunc_t *tr_func, void *arg)
2678 struct periph_driver **pdrv;
2684 * We don't traverse the peripheral driver list like we do the
2685 * other lists, because it is a linker set, and therefore cannot be
2686 * changed during runtime. If the peripheral driver list is ever
2687 * re-done to be something other than a linker set (i.e. it can
2688 * change while the system is running), the list traversal should
2689 * be modified to work like the other traversal functions.
2691 for (pdrv = (start_pdrv ? start_pdrv : periph_drivers);
2692 *pdrv != NULL; pdrv++) {
2693 retval = tr_func(pdrv, arg);
2703 xptpdperiphtraverse(struct periph_driver **pdrv,
2704 struct cam_periph *start_periph,
2705 xpt_periphfunc_t *tr_func, void *arg)
2707 struct cam_periph *periph, *next_periph;
2712 for (periph = (start_periph ? start_periph :
2713 TAILQ_FIRST(&(*pdrv)->units)); periph != NULL;
2714 periph = next_periph) {
2716 next_periph = TAILQ_NEXT(periph, unit_links);
2718 retval = tr_func(periph, arg);
2726 xptdefbusfunc(struct cam_eb *bus, void *arg)
2728 struct xpt_traverse_config *tr_config;
2730 tr_config = (struct xpt_traverse_config *)arg;
2732 if (tr_config->depth == XPT_DEPTH_BUS) {
2733 xpt_busfunc_t *tr_func;
2735 tr_func = (xpt_busfunc_t *)tr_config->tr_func;
2737 return(tr_func(bus, tr_config->tr_arg));
2739 return(xpttargettraverse(bus, NULL, xptdeftargetfunc, arg));
2743 xptdeftargetfunc(struct cam_et *target, void *arg)
2745 struct xpt_traverse_config *tr_config;
2747 tr_config = (struct xpt_traverse_config *)arg;
2749 if (tr_config->depth == XPT_DEPTH_TARGET) {
2750 xpt_targetfunc_t *tr_func;
2752 tr_func = (xpt_targetfunc_t *)tr_config->tr_func;
2754 return(tr_func(target, tr_config->tr_arg));
2756 return(xptdevicetraverse(target, NULL, xptdefdevicefunc, arg));
2760 xptdefdevicefunc(struct cam_ed *device, void *arg)
2762 struct xpt_traverse_config *tr_config;
2764 tr_config = (struct xpt_traverse_config *)arg;
2766 if (tr_config->depth == XPT_DEPTH_DEVICE) {
2767 xpt_devicefunc_t *tr_func;
2769 tr_func = (xpt_devicefunc_t *)tr_config->tr_func;
2771 return(tr_func(device, tr_config->tr_arg));
2773 return(xptperiphtraverse(device, NULL, xptdefperiphfunc, arg));
2777 xptdefperiphfunc(struct cam_periph *periph, void *arg)
2779 struct xpt_traverse_config *tr_config;
2780 xpt_periphfunc_t *tr_func;
2782 tr_config = (struct xpt_traverse_config *)arg;
2784 tr_func = (xpt_periphfunc_t *)tr_config->tr_func;
2787 * Unlike the other default functions, we don't check for depth
2788 * here. The peripheral driver level is the last level in the EDT,
2789 * so if we're here, we should execute the function in question.
2791 return(tr_func(periph, tr_config->tr_arg));
2795 * Execute the given function for every bus in the EDT.
2798 xpt_for_all_busses(xpt_busfunc_t *tr_func, void *arg)
2800 struct xpt_traverse_config tr_config;
2802 tr_config.depth = XPT_DEPTH_BUS;
2803 tr_config.tr_func = tr_func;
2804 tr_config.tr_arg = arg;
2806 return(xptbustraverse(NULL, xptdefbusfunc, &tr_config));
2811 * Execute the given function for every target in the EDT.
2814 xpt_for_all_targets(xpt_targetfunc_t *tr_func, void *arg)
2816 struct xpt_traverse_config tr_config;
2818 tr_config.depth = XPT_DEPTH_TARGET;
2819 tr_config.tr_func = tr_func;
2820 tr_config.tr_arg = arg;
2822 return(xptbustraverse(NULL, xptdefbusfunc, &tr_config));
2824 #endif /* notusedyet */
2827 * Execute the given function for every device in the EDT.
2830 xpt_for_all_devices(xpt_devicefunc_t *tr_func, void *arg)
2832 struct xpt_traverse_config tr_config;
2834 tr_config.depth = XPT_DEPTH_DEVICE;
2835 tr_config.tr_func = tr_func;
2836 tr_config.tr_arg = arg;
2838 return(xptbustraverse(NULL, xptdefbusfunc, &tr_config));
2843 * Execute the given function for every peripheral in the EDT.
2846 xpt_for_all_periphs(xpt_periphfunc_t *tr_func, void *arg)
2848 struct xpt_traverse_config tr_config;
2850 tr_config.depth = XPT_DEPTH_PERIPH;
2851 tr_config.tr_func = tr_func;
2852 tr_config.tr_arg = arg;
2854 return(xptbustraverse(NULL, xptdefbusfunc, &tr_config));
2856 #endif /* notusedyet */
2859 xptsetasyncfunc(struct cam_ed *device, void *arg)
2861 struct cam_path path;
2862 struct ccb_getdev cgd;
2863 struct async_node *cur_entry;
2865 cur_entry = (struct async_node *)arg;
2868 * Don't report unconfigured devices (Wildcard devs,
2869 * devices only for target mode, device instances
2870 * that have been invalidated but are waiting for
2871 * their last reference count to be released).
2873 if ((device->flags & CAM_DEV_UNCONFIGURED) != 0)
2876 xpt_compile_path(&path,
2878 device->target->bus->path_id,
2879 device->target->target_id,
2881 xpt_setup_ccb(&cgd.ccb_h, &path, /*priority*/1);
2882 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
2883 xpt_action((union ccb *)&cgd);
2884 cur_entry->callback(cur_entry->callback_arg,
2887 xpt_release_path(&path);
2893 xptsetasyncbusfunc(struct cam_eb *bus, void *arg)
2895 struct cam_path path;
2896 struct ccb_pathinq cpi;
2897 struct async_node *cur_entry;
2899 cur_entry = (struct async_node *)arg;
2901 xpt_compile_path(&path, /*periph*/NULL,
2903 CAM_TARGET_WILDCARD,
2905 xpt_setup_ccb(&cpi.ccb_h, &path, /*priority*/1);
2906 cpi.ccb_h.func_code = XPT_PATH_INQ;
2907 xpt_action((union ccb *)&cpi);
2908 cur_entry->callback(cur_entry->callback_arg,
2911 xpt_release_path(&path);
2917 xpt_action(union ccb *start_ccb)
2921 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("xpt_action\n"));
2923 start_ccb->ccb_h.status = CAM_REQ_INPROG;
2925 iopl = splsoftcam();
2926 switch (start_ccb->ccb_h.func_code) {
2929 #ifdef CAM_NEW_TRAN_CODE
2930 struct cam_ed *device;
2931 #endif /* CAM_NEW_TRAN_CODE */
2933 char cdb_str[(SCSI_MAX_CDBLEN * 3) + 1];
2934 struct cam_path *path;
2936 path = start_ccb->ccb_h.path;
2940 * For the sake of compatibility with SCSI-1
2941 * devices that may not understand the identify
2942 * message, we include lun information in the
2943 * second byte of all commands. SCSI-1 specifies
2944 * that luns are a 3 bit value and reserves only 3
2945 * bits for lun information in the CDB. Later
2946 * revisions of the SCSI spec allow for more than 8
2947 * luns, but have deprecated lun information in the
2948 * CDB. So, if the lun won't fit, we must omit.
2950 * Also be aware that during initial probing for devices,
2951 * the inquiry information is unknown but initialized to 0.
2952 * This means that this code will be exercised while probing
2953 * devices with an ANSI revision greater than 2.
2955 #ifdef CAM_NEW_TRAN_CODE
2956 device = start_ccb->ccb_h.path->device;
2957 if (device->protocol_version <= SCSI_REV_2
2958 #else /* CAM_NEW_TRAN_CODE */
2959 if (SID_ANSI_REV(&start_ccb->ccb_h.path->device->inq_data) <= 2
2960 #endif /* CAM_NEW_TRAN_CODE */
2961 && start_ccb->ccb_h.target_lun < 8
2962 && (start_ccb->ccb_h.flags & CAM_CDB_POINTER) == 0) {
2964 start_ccb->csio.cdb_io.cdb_bytes[1] |=
2965 start_ccb->ccb_h.target_lun << 5;
2967 start_ccb->csio.scsi_status = SCSI_STATUS_OK;
2968 CAM_DEBUG(path, CAM_DEBUG_CDB,("%s. CDB: %s\n",
2969 scsi_op_desc(start_ccb->csio.cdb_io.cdb_bytes[0],
2970 &path->device->inq_data),
2971 scsi_cdb_string(start_ccb->csio.cdb_io.cdb_bytes,
2972 cdb_str, sizeof(cdb_str))));
2976 case XPT_CONT_TARGET_IO:
2977 start_ccb->csio.sense_resid = 0;
2978 start_ccb->csio.resid = 0;
2983 struct cam_path *path;
2987 path = start_ccb->ccb_h.path;
2990 cam_ccbq_insert_ccb(&path->device->ccbq, start_ccb);
2991 if (path->device->qfrozen_cnt == 0)
2992 runq = xpt_schedule_dev_sendq(path->bus, path->device);
2997 xpt_run_dev_sendq(path->bus);
3000 case XPT_SET_TRAN_SETTINGS:
3002 xpt_set_transfer_settings(&start_ccb->cts,
3003 start_ccb->ccb_h.path->device,
3004 /*async_update*/FALSE);
3007 case XPT_CALC_GEOMETRY:
3009 struct cam_sim *sim;
3011 /* Filter out garbage */
3012 if (start_ccb->ccg.block_size == 0
3013 || start_ccb->ccg.volume_size == 0) {
3014 start_ccb->ccg.cylinders = 0;
3015 start_ccb->ccg.heads = 0;
3016 start_ccb->ccg.secs_per_track = 0;
3017 start_ccb->ccb_h.status = CAM_REQ_CMP;
3022 * In a PC-98 system, geometry translation depens on
3023 * the "real" device geometry obtained from mode page 4.
3024 * SCSI geometry translation is performed in the
3025 * initialization routine of the SCSI BIOS and the result
3026 * stored in host memory. If the translation is available
3027 * in host memory, use it. If not, rely on the default
3028 * translation the device driver performs.
3030 if (scsi_da_bios_params(&start_ccb->ccg) != 0) {
3031 start_ccb->ccb_h.status = CAM_REQ_CMP;
3035 sim = start_ccb->ccb_h.path->bus->sim;
3036 (*(sim->sim_action))(sim, start_ccb);
3041 union ccb* abort_ccb;
3044 abort_ccb = start_ccb->cab.abort_ccb;
3045 if (XPT_FC_IS_DEV_QUEUED(abort_ccb)) {
3047 if (abort_ccb->ccb_h.pinfo.index >= 0) {
3048 struct cam_ccbq *ccbq;
3050 ccbq = &abort_ccb->ccb_h.path->device->ccbq;
3051 cam_ccbq_remove_ccb(ccbq, abort_ccb);
3052 abort_ccb->ccb_h.status =
3053 CAM_REQ_ABORTED|CAM_DEV_QFRZN;
3054 xpt_freeze_devq(abort_ccb->ccb_h.path, 1);
3056 xpt_done(abort_ccb);
3058 start_ccb->ccb_h.status = CAM_REQ_CMP;
3061 if (abort_ccb->ccb_h.pinfo.index == CAM_UNQUEUED_INDEX
3062 && (abort_ccb->ccb_h.status & CAM_SIM_QUEUED) == 0) {
3064 * We've caught this ccb en route to
3065 * the SIM. Flag it for abort and the
3066 * SIM will do so just before starting
3067 * real work on the CCB.
3069 abort_ccb->ccb_h.status =
3070 CAM_REQ_ABORTED|CAM_DEV_QFRZN;
3071 xpt_freeze_devq(abort_ccb->ccb_h.path, 1);
3072 start_ccb->ccb_h.status = CAM_REQ_CMP;
3076 if (XPT_FC_IS_QUEUED(abort_ccb)
3077 && (abort_ccb->ccb_h.pinfo.index == CAM_DONEQ_INDEX)) {
3079 * It's already completed but waiting
3080 * for our SWI to get to it.
3082 start_ccb->ccb_h.status = CAM_UA_ABORT;
3086 * If we weren't able to take care of the abort request
3087 * in the XPT, pass the request down to the SIM for processing.
3091 case XPT_ACCEPT_TARGET_IO:
3093 case XPT_IMMED_NOTIFY:
3094 case XPT_NOTIFY_ACK:
3095 case XPT_GET_TRAN_SETTINGS:
3098 struct cam_sim *sim;
3100 sim = start_ccb->ccb_h.path->bus->sim;
3101 (*(sim->sim_action))(sim, start_ccb);
3106 struct cam_sim *sim;
3108 sim = start_ccb->ccb_h.path->bus->sim;
3109 (*(sim->sim_action))(sim, start_ccb);
3112 case XPT_PATH_STATS:
3113 start_ccb->cpis.last_reset =
3114 start_ccb->ccb_h.path->bus->last_reset;
3115 start_ccb->ccb_h.status = CAM_REQ_CMP;
3122 dev = start_ccb->ccb_h.path->device;
3124 if ((dev->flags & CAM_DEV_UNCONFIGURED) != 0) {
3125 start_ccb->ccb_h.status = CAM_DEV_NOT_THERE;
3127 struct ccb_getdev *cgd;
3131 cgd = &start_ccb->cgd;
3132 bus = cgd->ccb_h.path->bus;
3133 tar = cgd->ccb_h.path->target;
3134 cgd->inq_data = dev->inq_data;
3135 cgd->ccb_h.status = CAM_REQ_CMP;
3136 cgd->serial_num_len = dev->serial_num_len;
3137 if ((dev->serial_num_len > 0)
3138 && (dev->serial_num != NULL))
3139 bcopy(dev->serial_num, cgd->serial_num,
3140 dev->serial_num_len);
3145 case XPT_GDEV_STATS:
3150 dev = start_ccb->ccb_h.path->device;
3152 if ((dev->flags & CAM_DEV_UNCONFIGURED) != 0) {
3153 start_ccb->ccb_h.status = CAM_DEV_NOT_THERE;
3155 struct ccb_getdevstats *cgds;
3159 cgds = &start_ccb->cgds;
3160 bus = cgds->ccb_h.path->bus;
3161 tar = cgds->ccb_h.path->target;
3162 cgds->dev_openings = dev->ccbq.dev_openings;
3163 cgds->dev_active = dev->ccbq.dev_active;
3164 cgds->devq_openings = dev->ccbq.devq_openings;
3165 cgds->devq_queued = dev->ccbq.queue.entries;
3166 cgds->held = dev->ccbq.held;
3167 cgds->last_reset = tar->last_reset;
3168 cgds->maxtags = dev->quirk->maxtags;
3169 cgds->mintags = dev->quirk->mintags;
3170 if (timevalcmp(&tar->last_reset, &bus->last_reset, <))
3171 cgds->last_reset = bus->last_reset;
3172 cgds->ccb_h.status = CAM_REQ_CMP;
3179 struct cam_periph *nperiph;
3180 struct periph_list *periph_head;
3181 struct ccb_getdevlist *cgdl;
3184 struct cam_ed *device;
3191 * Don't want anyone mucking with our data.
3194 device = start_ccb->ccb_h.path->device;
3195 periph_head = &device->periphs;
3196 cgdl = &start_ccb->cgdl;
3199 * Check and see if the list has changed since the user
3200 * last requested a list member. If so, tell them that the
3201 * list has changed, and therefore they need to start over
3202 * from the beginning.
3204 if ((cgdl->index != 0) &&
3205 (cgdl->generation != device->generation)) {
3206 cgdl->status = CAM_GDEVLIST_LIST_CHANGED;
3212 * Traverse the list of peripherals and attempt to find
3213 * the requested peripheral.
3215 for (nperiph = SLIST_FIRST(periph_head), i = 0;
3216 (nperiph != NULL) && (i <= cgdl->index);
3217 nperiph = SLIST_NEXT(nperiph, periph_links), i++) {
3218 if (i == cgdl->index) {
3219 strncpy(cgdl->periph_name,
3220 nperiph->periph_name,
3222 cgdl->unit_number = nperiph->unit_number;
3227 cgdl->status = CAM_GDEVLIST_ERROR;
3232 if (nperiph == NULL)
3233 cgdl->status = CAM_GDEVLIST_LAST_DEVICE;
3235 cgdl->status = CAM_GDEVLIST_MORE_DEVS;
3238 cgdl->generation = device->generation;
3241 cgdl->ccb_h.status = CAM_REQ_CMP;
3247 dev_pos_type position_type;
3248 struct ccb_dev_match *cdm;
3251 cdm = &start_ccb->cdm;
3254 * Prevent EDT changes while we traverse it.
3258 * There are two ways of getting at information in the EDT.
3259 * The first way is via the primary EDT tree. It starts
3260 * with a list of busses, then a list of targets on a bus,
3261 * then devices/luns on a target, and then peripherals on a
3262 * device/lun. The "other" way is by the peripheral driver
3263 * lists. The peripheral driver lists are organized by
3264 * peripheral driver. (obviously) So it makes sense to
3265 * use the peripheral driver list if the user is looking
3266 * for something like "da1", or all "da" devices. If the
3267 * user is looking for something on a particular bus/target
3268 * or lun, it's generally better to go through the EDT tree.
3271 if (cdm->pos.position_type != CAM_DEV_POS_NONE)
3272 position_type = cdm->pos.position_type;
3276 position_type = CAM_DEV_POS_NONE;
3278 for (i = 0; i < cdm->num_patterns; i++) {
3279 if ((cdm->patterns[i].type == DEV_MATCH_BUS)
3280 ||(cdm->patterns[i].type == DEV_MATCH_DEVICE)){
3281 position_type = CAM_DEV_POS_EDT;
3286 if (cdm->num_patterns == 0)
3287 position_type = CAM_DEV_POS_EDT;
3288 else if (position_type == CAM_DEV_POS_NONE)
3289 position_type = CAM_DEV_POS_PDRV;
3292 switch(position_type & CAM_DEV_POS_TYPEMASK) {
3293 case CAM_DEV_POS_EDT:
3294 ret = xptedtmatch(cdm);
3296 case CAM_DEV_POS_PDRV:
3297 ret = xptperiphlistmatch(cdm);
3300 cdm->status = CAM_DEV_MATCH_ERROR;
3306 if (cdm->status == CAM_DEV_MATCH_ERROR)
3307 start_ccb->ccb_h.status = CAM_REQ_CMP_ERR;
3309 start_ccb->ccb_h.status = CAM_REQ_CMP;
3315 struct ccb_setasync *csa;
3316 struct async_node *cur_entry;
3317 struct async_list *async_head;
3321 csa = &start_ccb->csa;
3322 added = csa->event_enable;
3323 async_head = &csa->ccb_h.path->device->asyncs;
3326 * If there is already an entry for us, simply
3330 cur_entry = SLIST_FIRST(async_head);
3331 while (cur_entry != NULL) {
3332 if ((cur_entry->callback_arg == csa->callback_arg)
3333 && (cur_entry->callback == csa->callback))
3335 cur_entry = SLIST_NEXT(cur_entry, links);
3338 if (cur_entry != NULL) {
3340 * If the request has no flags set,
3343 added &= ~cur_entry->event_enable;
3344 if (csa->event_enable == 0) {
3345 SLIST_REMOVE(async_head, cur_entry,
3347 csa->ccb_h.path->device->refcount--;
3348 free(cur_entry, M_DEVBUF);
3350 cur_entry->event_enable = csa->event_enable;
3353 cur_entry = malloc(sizeof(*cur_entry), M_DEVBUF,
3355 if (cur_entry == NULL) {
3357 csa->ccb_h.status = CAM_RESRC_UNAVAIL;
3360 cur_entry->event_enable = csa->event_enable;
3361 cur_entry->callback_arg = csa->callback_arg;
3362 cur_entry->callback = csa->callback;
3363 SLIST_INSERT_HEAD(async_head, cur_entry, links);
3364 csa->ccb_h.path->device->refcount++;
3367 if ((added & AC_FOUND_DEVICE) != 0) {
3369 * Get this peripheral up to date with all
3370 * the currently existing devices.
3372 xpt_for_all_devices(xptsetasyncfunc, cur_entry);
3374 if ((added & AC_PATH_REGISTERED) != 0) {
3376 * Get this peripheral up to date with all
3377 * the currently existing busses.
3379 xpt_for_all_busses(xptsetasyncbusfunc, cur_entry);
3382 start_ccb->ccb_h.status = CAM_REQ_CMP;
3387 struct ccb_relsim *crs;
3391 crs = &start_ccb->crs;
3392 dev = crs->ccb_h.path->device;
3395 crs->ccb_h.status = CAM_DEV_NOT_THERE;
3401 if ((crs->release_flags & RELSIM_ADJUST_OPENINGS) != 0) {
3403 if ((dev->inq_data.flags & SID_CmdQue) != 0) {
3405 /* Don't ever go below one opening */
3406 if (crs->openings > 0) {
3407 xpt_dev_ccbq_resize(crs->ccb_h.path,
3411 xpt_print_path(crs->ccb_h.path);
3412 printf("tagged openings "
3420 if ((crs->release_flags & RELSIM_RELEASE_AFTER_TIMEOUT) != 0) {
3422 if ((dev->flags & CAM_DEV_REL_TIMEOUT_PENDING) != 0) {
3425 * Just extend the old timeout and decrement
3426 * the freeze count so that a single timeout
3427 * is sufficient for releasing the queue.
3429 start_ccb->ccb_h.flags &= ~CAM_DEV_QFREEZE;
3430 untimeout(xpt_release_devq_timeout,
3431 dev, dev->c_handle);
3434 start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
3438 timeout(xpt_release_devq_timeout,
3440 (crs->release_timeout * hz) / 1000);
3442 dev->flags |= CAM_DEV_REL_TIMEOUT_PENDING;
3446 if ((crs->release_flags & RELSIM_RELEASE_AFTER_CMDCMPLT) != 0) {
3448 if ((dev->flags & CAM_DEV_REL_ON_COMPLETE) != 0) {
3450 * Decrement the freeze count so that a single
3451 * completion is still sufficient to unfreeze
3454 start_ccb->ccb_h.flags &= ~CAM_DEV_QFREEZE;
3457 dev->flags |= CAM_DEV_REL_ON_COMPLETE;
3458 start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
3462 if ((crs->release_flags & RELSIM_RELEASE_AFTER_QEMPTY) != 0) {
3464 if ((dev->flags & CAM_DEV_REL_ON_QUEUE_EMPTY) != 0
3465 || (dev->ccbq.dev_active == 0)) {
3467 start_ccb->ccb_h.flags &= ~CAM_DEV_QFREEZE;
3470 dev->flags |= CAM_DEV_REL_ON_QUEUE_EMPTY;
3471 start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
3476 if ((start_ccb->ccb_h.flags & CAM_DEV_QFREEZE) == 0) {
3478 xpt_release_devq(crs->ccb_h.path, /*count*/1,
3481 start_ccb->crs.qfrozen_cnt = dev->qfrozen_cnt;
3482 start_ccb->ccb_h.status = CAM_REQ_CMP;
3486 xpt_scan_bus(start_ccb->ccb_h.path->periph, start_ccb);
3489 xpt_scan_lun(start_ccb->ccb_h.path->periph,
3490 start_ccb->ccb_h.path, start_ccb->crcn.flags,
3498 #ifdef CAM_DEBUG_DELAY
3499 cam_debug_delay = CAM_DEBUG_DELAY;
3501 cam_dflags = start_ccb->cdbg.flags;
3502 if (cam_dpath != NULL) {
3503 xpt_free_path(cam_dpath);
3507 if (cam_dflags != CAM_DEBUG_NONE) {
3508 if (xpt_create_path(&cam_dpath, xpt_periph,
3509 start_ccb->ccb_h.path_id,
3510 start_ccb->ccb_h.target_id,
3511 start_ccb->ccb_h.target_lun) !=
3513 start_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
3514 cam_dflags = CAM_DEBUG_NONE;
3516 start_ccb->ccb_h.status = CAM_REQ_CMP;
3517 xpt_print_path(cam_dpath);
3518 printf("debugging flags now %x\n", cam_dflags);
3522 start_ccb->ccb_h.status = CAM_REQ_CMP;
3525 #else /* !CAMDEBUG */
3526 start_ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
3527 #endif /* CAMDEBUG */
3531 if ((start_ccb->ccb_h.flags & CAM_DEV_QFREEZE) != 0)
3532 xpt_freeze_devq(start_ccb->ccb_h.path, 1);
3533 start_ccb->ccb_h.status = CAM_REQ_CMP;
3540 start_ccb->ccb_h.status = CAM_PROVIDE_FAIL;
3547 xpt_polled_action(union ccb *start_ccb)
3551 struct cam_sim *sim;
3552 struct cam_devq *devq;
3555 timeout = start_ccb->ccb_h.timeout;
3556 sim = start_ccb->ccb_h.path->bus->sim;
3558 dev = start_ccb->ccb_h.path->device;
3563 * Steal an opening so that no other queued requests
3564 * can get it before us while we simulate interrupts.
3566 dev->ccbq.devq_openings--;
3567 dev->ccbq.dev_openings--;
3569 while((devq->send_openings <= 0 || dev->ccbq.dev_openings < 0)
3570 && (--timeout > 0)) {
3572 (*(sim->sim_poll))(sim);
3577 dev->ccbq.devq_openings++;
3578 dev->ccbq.dev_openings++;
3581 xpt_action(start_ccb);
3582 while(--timeout > 0) {
3583 (*(sim->sim_poll))(sim);
3586 if ((start_ccb->ccb_h.status & CAM_STATUS_MASK)
3593 * XXX Is it worth adding a sim_timeout entry
3594 * point so we can attempt recovery? If
3595 * this is only used for dumps, I don't think
3598 start_ccb->ccb_h.status = CAM_CMD_TIMEOUT;
3601 start_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
3607 * Schedule a peripheral driver to receive a ccb when it's
3608 * target device has space for more transactions.
3611 xpt_schedule(struct cam_periph *perph, u_int32_t new_priority)
3613 struct cam_ed *device;
3617 CAM_DEBUG(perph->path, CAM_DEBUG_TRACE, ("xpt_schedule\n"));
3618 device = perph->path->device;
3620 if (periph_is_queued(perph)) {
3621 /* Simply reorder based on new priority */
3622 CAM_DEBUG(perph->path, CAM_DEBUG_SUBTRACE,
3623 (" change priority to %d\n", new_priority));
3624 if (new_priority < perph->pinfo.priority) {
3625 camq_change_priority(&device->drvq,
3631 /* New entry on the queue */
3632 CAM_DEBUG(perph->path, CAM_DEBUG_SUBTRACE,
3633 (" added periph to queue\n"));
3634 perph->pinfo.priority = new_priority;
3635 perph->pinfo.generation = ++device->drvq.generation;
3636 camq_insert(&device->drvq, &perph->pinfo);
3637 runq = xpt_schedule_dev_allocq(perph->path->bus, device);
3641 CAM_DEBUG(perph->path, CAM_DEBUG_SUBTRACE,
3642 (" calling xpt_run_devq\n"));
3643 xpt_run_dev_allocq(perph->path->bus);
3649 * Schedule a device to run on a given queue.
3650 * If the device was inserted as a new entry on the queue,
3651 * return 1 meaning the device queue should be run. If we
3652 * were already queued, implying someone else has already
3653 * started the queue, return 0 so the caller doesn't attempt
3654 * to run the queue. Must be run at either splsoftcam
3655 * (or splcam since that encompases splsoftcam).
3658 xpt_schedule_dev(struct camq *queue, cam_pinfo *pinfo,
3659 u_int32_t new_priority)
3662 u_int32_t old_priority;
3664 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_schedule_dev\n"));
3666 old_priority = pinfo->priority;
3669 * Are we already queued?
3671 if (pinfo->index != CAM_UNQUEUED_INDEX) {
3672 /* Simply reorder based on new priority */
3673 if (new_priority < old_priority) {
3674 camq_change_priority(queue, pinfo->index,
3676 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3677 ("changed priority to %d\n",
3682 /* New entry on the queue */
3683 if (new_priority < old_priority)
3684 pinfo->priority = new_priority;
3686 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3687 ("Inserting onto queue\n"));
3688 pinfo->generation = ++queue->generation;
3689 camq_insert(queue, pinfo);
3696 xpt_run_dev_allocq(struct cam_eb *bus)
3698 struct cam_devq *devq;
3701 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_run_dev_allocq\n"));
3702 devq = bus->sim->devq;
3704 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3705 (" qfrozen_cnt == 0x%x, entries == %d, "
3706 "openings == %d, active == %d\n",
3707 devq->alloc_queue.qfrozen_cnt,
3708 devq->alloc_queue.entries,
3709 devq->alloc_openings,
3710 devq->alloc_active));
3713 devq->alloc_queue.qfrozen_cnt++;
3714 while ((devq->alloc_queue.entries > 0)
3715 && (devq->alloc_openings > 0)
3716 && (devq->alloc_queue.qfrozen_cnt <= 1)) {
3717 struct cam_ed_qinfo *qinfo;
3718 struct cam_ed *device;
3719 union ccb *work_ccb;
3720 struct cam_periph *drv;
3723 qinfo = (struct cam_ed_qinfo *)camq_remove(&devq->alloc_queue,
3725 device = qinfo->device;
3727 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3728 ("running device %p\n", device));
3730 drvq = &device->drvq;
3733 if (drvq->entries <= 0) {
3734 panic("xpt_run_dev_allocq: "
3735 "Device on queue without any work to do");
3738 if ((work_ccb = xpt_get_ccb(device)) != NULL) {
3739 devq->alloc_openings--;
3740 devq->alloc_active++;
3741 drv = (struct cam_periph*)camq_remove(drvq, CAMQ_HEAD);
3743 xpt_setup_ccb(&work_ccb->ccb_h, drv->path,
3744 drv->pinfo.priority);
3745 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3746 ("calling periph start\n"));
3747 drv->periph_start(drv, work_ccb);
3750 * Malloc failure in alloc_ccb
3753 * XXX add us to a list to be run from free_ccb
3754 * if we don't have any ccbs active on this
3755 * device queue otherwise we may never get run
3761 /* Raise IPL for possible insertion and test at top of loop */
3764 if (drvq->entries > 0) {
3765 /* We have more work. Attempt to reschedule */
3766 xpt_schedule_dev_allocq(bus, device);
3769 devq->alloc_queue.qfrozen_cnt--;
3774 xpt_run_dev_sendq(struct cam_eb *bus)
3776 struct cam_devq *devq;
3779 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_run_dev_sendq\n"));
3781 devq = bus->sim->devq;
3784 devq->send_queue.qfrozen_cnt++;
3787 while ((devq->send_queue.entries > 0)
3788 && (devq->send_openings > 0)) {
3789 struct cam_ed_qinfo *qinfo;
3790 struct cam_ed *device;
3791 union ccb *work_ccb;
3792 struct cam_sim *sim;
3796 if (devq->send_queue.qfrozen_cnt > 1) {
3801 qinfo = (struct cam_ed_qinfo *)camq_remove(&devq->send_queue,
3803 device = qinfo->device;
3806 * If the device has been "frozen", don't attempt
3809 if (device->qfrozen_cnt > 0) {
3814 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3815 ("running device %p\n", device));
3817 work_ccb = cam_ccbq_peek_ccb(&device->ccbq, CAMQ_HEAD);
3818 if (work_ccb == NULL) {
3819 printf("device on run queue with no ccbs???");
3824 if ((work_ccb->ccb_h.flags & CAM_HIGH_POWER) != 0) {
3826 if (num_highpower <= 0) {
3828 * We got a high power command, but we
3829 * don't have any available slots. Freeze
3830 * the device queue until we have a slot
3833 device->qfrozen_cnt++;
3834 STAILQ_INSERT_TAIL(&highpowerq,
3842 * Consume a high power slot while
3848 devq->active_dev = device;
3849 cam_ccbq_remove_ccb(&device->ccbq, work_ccb);
3851 cam_ccbq_send_ccb(&device->ccbq, work_ccb);
3854 devq->send_openings--;
3855 devq->send_active++;
3857 if (device->ccbq.queue.entries > 0)
3858 xpt_schedule_dev_sendq(bus, device);
3860 if (work_ccb && (work_ccb->ccb_h.flags & CAM_DEV_QFREEZE) != 0){
3862 * The client wants to freeze the queue
3863 * after this CCB is sent.
3866 device->qfrozen_cnt++;
3872 /* In Target mode, the peripheral driver knows best... */
3873 if (work_ccb->ccb_h.func_code == XPT_SCSI_IO) {
3874 if ((device->inq_flags & SID_CmdQue) != 0
3875 && work_ccb->csio.tag_action != CAM_TAG_ACTION_NONE)
3876 work_ccb->ccb_h.flags |= CAM_TAG_ACTION_VALID;
3879 * Clear this in case of a retried CCB that
3880 * failed due to a rejected tag.
3882 work_ccb->ccb_h.flags &= ~CAM_TAG_ACTION_VALID;
3886 * Device queues can be shared among multiple sim instances
3887 * that reside on different busses. Use the SIM in the queue
3888 * CCB's path, rather than the one in the bus that was passed
3889 * into this function.
3891 sim = work_ccb->ccb_h.path->bus->sim;
3892 (*(sim->sim_action))(sim, work_ccb);
3895 devq->active_dev = NULL;
3897 /* Raise IPL for possible insertion and test at top of loop */
3902 devq->send_queue.qfrozen_cnt--;
3907 * This function merges stuff from the slave ccb into the master ccb, while
3908 * keeping important fields in the master ccb constant.
3911 xpt_merge_ccb(union ccb *master_ccb, union ccb *slave_ccb)
3914 * Pull fields that are valid for peripheral drivers to set
3915 * into the master CCB along with the CCB "payload".
3917 master_ccb->ccb_h.retry_count = slave_ccb->ccb_h.retry_count;
3918 master_ccb->ccb_h.func_code = slave_ccb->ccb_h.func_code;
3919 master_ccb->ccb_h.timeout = slave_ccb->ccb_h.timeout;
3920 master_ccb->ccb_h.flags = slave_ccb->ccb_h.flags;
3921 bcopy(&(&slave_ccb->ccb_h)[1], &(&master_ccb->ccb_h)[1],
3922 sizeof(union ccb) - sizeof(struct ccb_hdr));
3926 xpt_setup_ccb(struct ccb_hdr *ccb_h, struct cam_path *path, u_int32_t priority)
3928 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_setup_ccb\n"));
3929 ccb_h->pinfo.priority = priority;
3931 ccb_h->path_id = path->bus->path_id;
3933 ccb_h->target_id = path->target->target_id;
3935 ccb_h->target_id = CAM_TARGET_WILDCARD;
3937 ccb_h->target_lun = path->device->lun_id;
3938 ccb_h->pinfo.generation = ++path->device->ccbq.queue.generation;
3940 ccb_h->target_lun = CAM_TARGET_WILDCARD;
3942 ccb_h->pinfo.index = CAM_UNQUEUED_INDEX;
3946 /* Path manipulation functions */
3948 xpt_create_path(struct cam_path **new_path_ptr, struct cam_periph *perph,
3949 path_id_t path_id, target_id_t target_id, lun_id_t lun_id)
3951 struct cam_path *path;
3954 path = (struct cam_path *)malloc(sizeof(*path), M_DEVBUF, M_NOWAIT);
3957 status = CAM_RESRC_UNAVAIL;
3960 status = xpt_compile_path(path, perph, path_id, target_id, lun_id);
3961 if (status != CAM_REQ_CMP) {
3962 free(path, M_DEVBUF);
3965 *new_path_ptr = path;
3970 xpt_compile_path(struct cam_path *new_path, struct cam_periph *perph,
3971 path_id_t path_id, target_id_t target_id, lun_id_t lun_id)
3974 struct cam_et *target;
3975 struct cam_ed *device;
3979 status = CAM_REQ_CMP; /* Completed without error */
3980 target = NULL; /* Wildcarded */
3981 device = NULL; /* Wildcarded */
3984 * We will potentially modify the EDT, so block interrupts
3985 * that may attempt to create cam paths.
3988 bus = xpt_find_bus(path_id);
3990 status = CAM_PATH_INVALID;
3992 target = xpt_find_target(bus, target_id);
3993 if (target == NULL) {
3995 struct cam_et *new_target;
3997 new_target = xpt_alloc_target(bus, target_id);
3998 if (new_target == NULL) {
3999 status = CAM_RESRC_UNAVAIL;
4001 target = new_target;
4004 if (target != NULL) {
4005 device = xpt_find_device(target, lun_id);
4006 if (device == NULL) {
4008 struct cam_ed *new_device;
4010 new_device = xpt_alloc_device(bus,
4013 if (new_device == NULL) {
4014 status = CAM_RESRC_UNAVAIL;
4016 device = new_device;
4024 * Only touch the user's data if we are successful.
4026 if (status == CAM_REQ_CMP) {
4027 new_path->periph = perph;
4028 new_path->bus = bus;
4029 new_path->target = target;
4030 new_path->device = device;
4031 CAM_DEBUG(new_path, CAM_DEBUG_TRACE, ("xpt_compile_path\n"));
4034 xpt_release_device(bus, target, device);
4036 xpt_release_target(bus, target);
4038 xpt_release_bus(bus);
4044 xpt_release_path(struct cam_path *path)
4046 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_release_path\n"));
4047 if (path->device != NULL) {
4048 xpt_release_device(path->bus, path->target, path->device);
4049 path->device = NULL;
4051 if (path->target != NULL) {
4052 xpt_release_target(path->bus, path->target);
4053 path->target = NULL;
4055 if (path->bus != NULL) {
4056 xpt_release_bus(path->bus);
4062 xpt_free_path(struct cam_path *path)
4064 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_free_path\n"));
4065 xpt_release_path(path);
4066 free(path, M_DEVBUF);
4071 * Return -1 for failure, 0 for exact match, 1 for match with wildcards
4072 * in path1, 2 for match with wildcards in path2.
4075 xpt_path_comp(struct cam_path *path1, struct cam_path *path2)
4079 if (path1->bus != path2->bus) {
4080 if (path1->bus->path_id == CAM_BUS_WILDCARD)
4082 else if (path2->bus->path_id == CAM_BUS_WILDCARD)
4087 if (path1->target != path2->target) {
4088 if (path1->target->target_id == CAM_TARGET_WILDCARD) {
4091 } else if (path2->target->target_id == CAM_TARGET_WILDCARD)
4096 if (path1->device != path2->device) {
4097 if (path1->device->lun_id == CAM_LUN_WILDCARD) {
4100 } else if (path2->device->lun_id == CAM_LUN_WILDCARD)
4109 xpt_print_path(struct cam_path *path)
4112 printf("(nopath): ");
4114 if (path->periph != NULL)
4115 printf("(%s%d:", path->periph->periph_name,
4116 path->periph->unit_number);
4118 printf("(noperiph:");
4120 if (path->bus != NULL)
4121 printf("%s%d:%d:", path->bus->sim->sim_name,
4122 path->bus->sim->unit_number,
4123 path->bus->sim->bus_id);
4127 if (path->target != NULL)
4128 printf("%d:", path->target->target_id);
4132 if (path->device != NULL)
4133 printf("%d): ", path->device->lun_id);
4140 xpt_path_string(struct cam_path *path, char *str, size_t str_len)
4144 sbuf_new(&sb, str, str_len, 0);
4147 sbuf_printf(&sb, "(nopath): ");
4149 if (path->periph != NULL)
4150 sbuf_printf(&sb, "(%s%d:", path->periph->periph_name,
4151 path->periph->unit_number);
4153 sbuf_printf(&sb, "(noperiph:");
4155 if (path->bus != NULL)
4156 sbuf_printf(&sb, "%s%d:%d:", path->bus->sim->sim_name,
4157 path->bus->sim->unit_number,
4158 path->bus->sim->bus_id);
4160 sbuf_printf(&sb, "nobus:");
4162 if (path->target != NULL)
4163 sbuf_printf(&sb, "%d:", path->target->target_id);
4165 sbuf_printf(&sb, "X:");
4167 if (path->device != NULL)
4168 sbuf_printf(&sb, "%d): ", path->device->lun_id);
4170 sbuf_printf(&sb, "X): ");
4174 return(sbuf_len(&sb));
4178 xpt_path_path_id(struct cam_path *path)
4180 return(path->bus->path_id);
4184 xpt_path_target_id(struct cam_path *path)
4186 if (path->target != NULL)
4187 return (path->target->target_id);
4189 return (CAM_TARGET_WILDCARD);
4193 xpt_path_lun_id(struct cam_path *path)
4195 if (path->device != NULL)
4196 return (path->device->lun_id);
4198 return (CAM_LUN_WILDCARD);
4202 xpt_path_sim(struct cam_path *path)
4204 return (path->bus->sim);
4208 xpt_path_periph(struct cam_path *path)
4210 return (path->periph);
4214 * Release a CAM control block for the caller. Remit the cost of the structure
4215 * to the device referenced by the path. If the this device had no 'credits'
4216 * and peripheral drivers have registered async callbacks for this notification
4220 xpt_release_ccb(union ccb *free_ccb)
4223 struct cam_path *path;
4224 struct cam_ed *device;
4227 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_release_ccb\n"));
4228 path = free_ccb->ccb_h.path;
4229 device = path->device;
4232 cam_ccbq_release_opening(&device->ccbq);
4233 if (xpt_ccb_count > xpt_max_ccbs) {
4234 xpt_free_ccb(free_ccb);
4237 SLIST_INSERT_HEAD(&ccb_freeq, &free_ccb->ccb_h, xpt_links.sle);
4239 bus->sim->devq->alloc_openings++;
4240 bus->sim->devq->alloc_active--;
4241 /* XXX Turn this into an inline function - xpt_run_device?? */
4242 if ((device_is_alloc_queued(device) == 0)
4243 && (device->drvq.entries > 0)) {
4244 xpt_schedule_dev_allocq(bus, device);
4247 if (dev_allocq_is_runnable(bus->sim->devq))
4248 xpt_run_dev_allocq(bus);
4251 /* Functions accessed by SIM drivers */
4254 * A sim structure, listing the SIM entry points and instance
4255 * identification info is passed to xpt_bus_register to hook the SIM
4256 * into the CAM framework. xpt_bus_register creates a cam_eb entry
4257 * for this new bus and places it in the array of busses and assigns
4258 * it a path_id. The path_id may be influenced by "hard wiring"
4259 * information specified by the user. Once interrupt services are
4260 * availible, the bus will be probed.
4263 xpt_bus_register(struct cam_sim *sim, u_int32_t bus)
4265 struct cam_eb *new_bus;
4266 struct cam_eb *old_bus;
4267 struct ccb_pathinq cpi;
4271 new_bus = (struct cam_eb *)malloc(sizeof(*new_bus),
4272 M_DEVBUF, M_NOWAIT);
4273 if (new_bus == NULL) {
4274 /* Couldn't satisfy request */
4275 return (CAM_RESRC_UNAVAIL);
4278 if (strcmp(sim->sim_name, "xpt") != 0) {
4281 xptpathid(sim->sim_name, sim->unit_number, sim->bus_id);
4284 TAILQ_INIT(&new_bus->et_entries);
4285 new_bus->path_id = sim->path_id;
4287 timevalclear(&new_bus->last_reset);
4289 new_bus->refcount = 1; /* Held until a bus_deregister event */
4290 new_bus->generation = 0;
4292 old_bus = TAILQ_FIRST(&xpt_busses);
4293 while (old_bus != NULL
4294 && old_bus->path_id < new_bus->path_id)
4295 old_bus = TAILQ_NEXT(old_bus, links);
4296 if (old_bus != NULL)
4297 TAILQ_INSERT_BEFORE(old_bus, new_bus, links);
4299 TAILQ_INSERT_TAIL(&xpt_busses, new_bus, links);
4303 /* Notify interested parties */
4304 if (sim->path_id != CAM_XPT_PATH_ID) {
4305 struct cam_path path;
4307 xpt_compile_path(&path, /*periph*/NULL, sim->path_id,
4308 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
4309 xpt_setup_ccb(&cpi.ccb_h, &path, /*priority*/1);
4310 cpi.ccb_h.func_code = XPT_PATH_INQ;
4311 xpt_action((union ccb *)&cpi);
4312 xpt_async(AC_PATH_REGISTERED, &path, &cpi);
4313 xpt_release_path(&path);
4315 return (CAM_SUCCESS);
4319 xpt_bus_deregister(path_id_t pathid)
4321 struct cam_path bus_path;
4324 status = xpt_compile_path(&bus_path, NULL, pathid,
4325 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
4326 if (status != CAM_REQ_CMP)
4329 xpt_async(AC_LOST_DEVICE, &bus_path, NULL);
4330 xpt_async(AC_PATH_DEREGISTERED, &bus_path, NULL);
4332 /* Release the reference count held while registered. */
4333 xpt_release_bus(bus_path.bus);
4334 xpt_release_path(&bus_path);
4336 return (CAM_REQ_CMP);
4340 xptnextfreepathid(void)
4347 bus = TAILQ_FIRST(&xpt_busses);
4349 /* Find an unoccupied pathid */
4351 && bus->path_id <= pathid) {
4352 if (bus->path_id == pathid)
4354 bus = TAILQ_NEXT(bus, links);
4358 * Ensure that this pathid is not reserved for
4359 * a bus that may be registered in the future.
4361 if (resource_string_value("scbus", pathid, "at", &strval) == 0) {
4363 /* Start the search over */
4370 xptpathid(const char *sim_name, int sim_unit, int sim_bus)
4377 pathid = CAM_XPT_PATH_ID;
4378 snprintf(buf, sizeof(buf), "%s%d", sim_name, sim_unit);
4380 while ((resource_find_match(&i, &dname, &dunit, "at", buf)) == 0) {
4381 if (strcmp(dname, "scbus")) {
4382 /* Avoid a bit of foot shooting. */
4385 if (dunit < 0) /* unwired?! */
4387 if (resource_int_value("scbus", dunit, "bus", &val) == 0) {
4388 if (sim_bus == val) {
4392 } else if (sim_bus == 0) {
4393 /* Unspecified matches bus 0 */
4397 printf("Ambiguous scbus configuration for %s%d "
4398 "bus %d, cannot wire down. The kernel "
4399 "config entry for scbus%d should "
4400 "specify a controller bus.\n"
4401 "Scbus will be assigned dynamically.\n",
4402 sim_name, sim_unit, sim_bus, dunit);
4407 if (pathid == CAM_XPT_PATH_ID)
4408 pathid = xptnextfreepathid();
4413 xpt_async(u_int32_t async_code, struct cam_path *path, void *async_arg)
4416 struct cam_et *target, *next_target;
4417 struct cam_ed *device, *next_device;
4420 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_async\n"));
4423 * Most async events come from a CAM interrupt context. In
4424 * a few cases, the error recovery code at the peripheral layer,
4425 * which may run from our SWI or a process context, may signal
4426 * deferred events with a call to xpt_async. Ensure async
4427 * notifications are serialized by blocking cam interrupts.
4433 if (async_code == AC_BUS_RESET) {
4437 /* Update our notion of when the last reset occurred */
4438 microtime(&bus->last_reset);
4442 for (target = TAILQ_FIRST(&bus->et_entries);
4444 target = next_target) {
4446 next_target = TAILQ_NEXT(target, links);
4448 if (path->target != target
4449 && path->target->target_id != CAM_TARGET_WILDCARD
4450 && target->target_id != CAM_TARGET_WILDCARD)
4453 if (async_code == AC_SENT_BDR) {
4456 /* Update our notion of when the last reset occurred */
4458 microtime(&path->target->last_reset);
4462 for (device = TAILQ_FIRST(&target->ed_entries);
4464 device = next_device) {
4466 next_device = TAILQ_NEXT(device, links);
4468 if (path->device != device
4469 && path->device->lun_id != CAM_LUN_WILDCARD
4470 && device->lun_id != CAM_LUN_WILDCARD)
4473 xpt_dev_async(async_code, bus, target,
4476 xpt_async_bcast(&device->asyncs, async_code,
4482 * If this wasn't a fully wildcarded async, tell all
4483 * clients that want all async events.
4485 if (bus != xpt_periph->path->bus)
4486 xpt_async_bcast(&xpt_periph->path->device->asyncs, async_code,
4492 xpt_async_bcast(struct async_list *async_head,
4493 u_int32_t async_code,
4494 struct cam_path *path, void *async_arg)
4496 struct async_node *cur_entry;
4498 cur_entry = SLIST_FIRST(async_head);
4499 while (cur_entry != NULL) {
4500 struct async_node *next_entry;
4502 * Grab the next list entry before we call the current
4503 * entry's callback. This is because the callback function
4504 * can delete its async callback entry.
4506 next_entry = SLIST_NEXT(cur_entry, links);
4507 if ((cur_entry->event_enable & async_code) != 0)
4508 cur_entry->callback(cur_entry->callback_arg,
4511 cur_entry = next_entry;
4516 * Handle any per-device event notifications that require action by the XPT.
4519 xpt_dev_async(u_int32_t async_code, struct cam_eb *bus, struct cam_et *target,
4520 struct cam_ed *device, void *async_arg)
4523 struct cam_path newpath;
4526 * We only need to handle events for real devices.
4528 if (target->target_id == CAM_TARGET_WILDCARD
4529 || device->lun_id == CAM_LUN_WILDCARD)
4533 * We need our own path with wildcards expanded to
4534 * handle certain types of events.
4536 if ((async_code == AC_SENT_BDR)
4537 || (async_code == AC_BUS_RESET)
4538 || (async_code == AC_INQ_CHANGED))
4539 status = xpt_compile_path(&newpath, NULL,
4544 status = CAM_REQ_CMP_ERR;
4546 if (status == CAM_REQ_CMP) {
4549 * Allow transfer negotiation to occur in a
4550 * tag free environment.
4552 if (async_code == AC_SENT_BDR
4553 || async_code == AC_BUS_RESET)
4554 xpt_toggle_tags(&newpath);
4556 if (async_code == AC_INQ_CHANGED) {
4558 * We've sent a start unit command, or
4559 * something similar to a device that
4560 * may have caused its inquiry data to
4561 * change. So we re-scan the device to
4562 * refresh the inquiry data for it.
4564 xpt_scan_lun(newpath.periph, &newpath,
4565 CAM_EXPECT_INQ_CHANGE, NULL);
4567 xpt_release_path(&newpath);
4568 } else if (async_code == AC_LOST_DEVICE) {
4569 device->flags |= CAM_DEV_UNCONFIGURED;
4570 } else if (async_code == AC_TRANSFER_NEG) {
4571 struct ccb_trans_settings *settings;
4573 settings = (struct ccb_trans_settings *)async_arg;
4574 xpt_set_transfer_settings(settings, device,
4575 /*async_update*/TRUE);
4580 xpt_freeze_devq(struct cam_path *path, u_int count)
4583 struct ccb_hdr *ccbh;
4586 path->device->qfrozen_cnt += count;
4589 * Mark the last CCB in the queue as needing
4590 * to be requeued if the driver hasn't
4591 * changed it's state yet. This fixes a race
4592 * where a ccb is just about to be queued to
4593 * a controller driver when it's interrupt routine
4594 * freezes the queue. To completly close the
4595 * hole, controller drives must check to see
4596 * if a ccb's status is still CAM_REQ_INPROG
4597 * under spl protection just before they queue
4598 * the CCB. See ahc_action/ahc_freeze_devq for
4601 ccbh = TAILQ_LAST(&path->device->ccbq.active_ccbs, ccb_hdr_tailq);
4602 if (ccbh && ccbh->status == CAM_REQ_INPROG)
4603 ccbh->status = CAM_REQUEUE_REQ;
4605 return (path->device->qfrozen_cnt);
4609 xpt_freeze_simq(struct cam_sim *sim, u_int count)
4611 sim->devq->send_queue.qfrozen_cnt += count;
4612 if (sim->devq->active_dev != NULL) {
4613 struct ccb_hdr *ccbh;
4615 ccbh = TAILQ_LAST(&sim->devq->active_dev->ccbq.active_ccbs,
4617 if (ccbh && ccbh->status == CAM_REQ_INPROG)
4618 ccbh->status = CAM_REQUEUE_REQ;
4620 return (sim->devq->send_queue.qfrozen_cnt);
4624 xpt_release_devq_timeout(void *arg)
4626 struct cam_ed *device;
4628 device = (struct cam_ed *)arg;
4630 xpt_release_devq_device(device, /*count*/1, /*run_queue*/TRUE);
4634 xpt_release_devq(struct cam_path *path, u_int count, int run_queue)
4636 xpt_release_devq_device(path->device, count, run_queue);
4640 xpt_release_devq_device(struct cam_ed *dev, u_int count, int run_queue)
4648 if (dev->qfrozen_cnt > 0) {
4650 count = (count > dev->qfrozen_cnt) ? dev->qfrozen_cnt : count;
4651 dev->qfrozen_cnt -= count;
4652 if (dev->qfrozen_cnt == 0) {
4655 * No longer need to wait for a successful
4656 * command completion.
4658 dev->flags &= ~CAM_DEV_REL_ON_COMPLETE;
4661 * Remove any timeouts that might be scheduled
4662 * to release this queue.
4664 if ((dev->flags & CAM_DEV_REL_TIMEOUT_PENDING) != 0) {
4665 untimeout(xpt_release_devq_timeout, dev,
4667 dev->flags &= ~CAM_DEV_REL_TIMEOUT_PENDING;
4671 * Now that we are unfrozen schedule the
4672 * device so any pending transactions are
4675 if ((dev->ccbq.queue.entries > 0)
4676 && (xpt_schedule_dev_sendq(dev->target->bus, dev))
4677 && (run_queue != 0)) {
4684 xpt_run_dev_sendq(dev->target->bus);
4689 xpt_release_simq(struct cam_sim *sim, int run_queue)
4694 sendq = &(sim->devq->send_queue);
4696 if (sendq->qfrozen_cnt > 0) {
4698 sendq->qfrozen_cnt--;
4699 if (sendq->qfrozen_cnt == 0) {
4703 * If there is a timeout scheduled to release this
4704 * sim queue, remove it. The queue frozen count is
4707 if ((sim->flags & CAM_SIM_REL_TIMEOUT_PENDING) != 0){
4708 untimeout(xpt_release_simq_timeout, sim,
4710 sim->flags &= ~CAM_SIM_REL_TIMEOUT_PENDING;
4712 bus = xpt_find_bus(sim->path_id);
4717 * Now that we are unfrozen run the send queue.
4719 xpt_run_dev_sendq(bus);
4721 xpt_release_bus(bus);
4729 xpt_release_simq_timeout(void *arg)
4731 struct cam_sim *sim;
4733 sim = (struct cam_sim *)arg;
4734 xpt_release_simq(sim, /* run_queue */ TRUE);
4738 xpt_done(union ccb *done_ccb)
4744 CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("xpt_done\n"));
4745 if ((done_ccb->ccb_h.func_code & XPT_FC_QUEUED) != 0) {
4747 * Queue up the request for handling by our SWI handler
4748 * any of the "non-immediate" type of ccbs.
4750 switch (done_ccb->ccb_h.path->periph->type) {
4751 case CAM_PERIPH_BIO:
4752 TAILQ_INSERT_TAIL(&cam_bioq, &done_ccb->ccb_h,
4754 done_ccb->ccb_h.pinfo.index = CAM_DONEQ_INDEX;
4755 swi_sched(cambio_ih, SWI_NOSWITCH);
4757 case CAM_PERIPH_NET:
4758 TAILQ_INSERT_TAIL(&cam_netq, &done_ccb->ccb_h,
4760 done_ccb->ccb_h.pinfo.index = CAM_DONEQ_INDEX;
4761 swi_sched(camnet_ih, SWI_NOSWITCH);
4773 new_ccb = malloc(sizeof(*new_ccb), M_DEVBUF, M_WAITOK);
4778 xpt_free_ccb(union ccb *free_ccb)
4780 free(free_ccb, M_DEVBUF);
4785 /* Private XPT functions */
4788 * Get a CAM control block for the caller. Charge the structure to the device
4789 * referenced by the path. If the this device has no 'credits' then the
4790 * device already has the maximum number of outstanding operations under way
4791 * and we return NULL. If we don't have sufficient resources to allocate more
4792 * ccbs, we also return NULL.
4795 xpt_get_ccb(struct cam_ed *device)
4801 if ((new_ccb = (union ccb *)SLIST_FIRST(&ccb_freeq)) == NULL) {
4802 new_ccb = malloc(sizeof(*new_ccb), M_DEVBUF, M_NOWAIT);
4803 if (new_ccb == NULL) {
4807 callout_handle_init(&new_ccb->ccb_h.timeout_ch);
4808 SLIST_INSERT_HEAD(&ccb_freeq, &new_ccb->ccb_h,
4812 cam_ccbq_take_opening(&device->ccbq);
4813 SLIST_REMOVE_HEAD(&ccb_freeq, xpt_links.sle);
4819 xpt_release_bus(struct cam_eb *bus)
4824 if ((--bus->refcount == 0)
4825 && (TAILQ_FIRST(&bus->et_entries) == NULL)) {
4826 TAILQ_REMOVE(&xpt_busses, bus, links);
4829 free(bus, M_DEVBUF);
4834 static struct cam_et *
4835 xpt_alloc_target(struct cam_eb *bus, target_id_t target_id)
4837 struct cam_et *target;
4839 target = (struct cam_et *)malloc(sizeof(*target), M_DEVBUF, M_NOWAIT);
4840 if (target != NULL) {
4841 struct cam_et *cur_target;
4843 TAILQ_INIT(&target->ed_entries);
4845 target->target_id = target_id;
4846 target->refcount = 1;
4847 target->generation = 0;
4848 timevalclear(&target->last_reset);
4850 * Hold a reference to our parent bus so it
4851 * will not go away before we do.
4855 /* Insertion sort into our bus's target list */
4856 cur_target = TAILQ_FIRST(&bus->et_entries);
4857 while (cur_target != NULL && cur_target->target_id < target_id)
4858 cur_target = TAILQ_NEXT(cur_target, links);
4860 if (cur_target != NULL) {
4861 TAILQ_INSERT_BEFORE(cur_target, target, links);
4863 TAILQ_INSERT_TAIL(&bus->et_entries, target, links);
4871 xpt_release_target(struct cam_eb *bus, struct cam_et *target)
4876 if ((--target->refcount == 0)
4877 && (TAILQ_FIRST(&target->ed_entries) == NULL)) {
4878 TAILQ_REMOVE(&bus->et_entries, target, links);
4881 free(target, M_DEVBUF);
4882 xpt_release_bus(bus);
4887 static struct cam_ed *
4888 xpt_alloc_device(struct cam_eb *bus, struct cam_et *target, lun_id_t lun_id)
4890 #ifdef CAM_NEW_TRAN_CODE
4891 struct cam_path path;
4892 #endif /* CAM_NEW_TRAN_CODE */
4893 struct cam_ed *device;
4894 struct cam_devq *devq;
4897 /* Make space for us in the device queue on our bus */
4898 devq = bus->sim->devq;
4899 status = cam_devq_resize(devq, devq->alloc_queue.array_size + 1);
4901 if (status != CAM_REQ_CMP) {
4904 device = (struct cam_ed *)malloc(sizeof(*device),
4905 M_DEVBUF, M_NOWAIT);
4908 if (device != NULL) {
4909 struct cam_ed *cur_device;
4911 cam_init_pinfo(&device->alloc_ccb_entry.pinfo);
4912 device->alloc_ccb_entry.device = device;
4913 cam_init_pinfo(&device->send_ccb_entry.pinfo);
4914 device->send_ccb_entry.device = device;
4915 device->target = target;
4916 device->lun_id = lun_id;
4917 /* Initialize our queues */
4918 if (camq_init(&device->drvq, 0) != 0) {
4919 free(device, M_DEVBUF);
4922 if (cam_ccbq_init(&device->ccbq,
4923 bus->sim->max_dev_openings) != 0) {
4924 camq_fini(&device->drvq);
4925 free(device, M_DEVBUF);
4928 SLIST_INIT(&device->asyncs);
4929 SLIST_INIT(&device->periphs);
4930 device->generation = 0;
4931 device->owner = NULL;
4933 * Take the default quirk entry until we have inquiry
4934 * data and can determine a better quirk to use.
4936 device->quirk = &xpt_quirk_table[xpt_quirk_table_size - 1];
4937 bzero(&device->inq_data, sizeof(device->inq_data));
4938 device->inq_flags = 0;
4939 device->queue_flags = 0;
4940 device->serial_num = NULL;
4941 device->serial_num_len = 0;
4942 device->qfrozen_cnt = 0;
4943 device->flags = CAM_DEV_UNCONFIGURED;
4944 device->tag_delay_count = 0;
4945 device->refcount = 1;
4946 callout_handle_init(&device->c_handle);
4949 * Hold a reference to our parent target so it
4950 * will not go away before we do.
4955 * XXX should be limited by number of CCBs this bus can
4958 xpt_max_ccbs += device->ccbq.devq_openings;
4959 /* Insertion sort into our target's device list */
4960 cur_device = TAILQ_FIRST(&target->ed_entries);
4961 while (cur_device != NULL && cur_device->lun_id < lun_id)
4962 cur_device = TAILQ_NEXT(cur_device, links);
4963 if (cur_device != NULL) {
4964 TAILQ_INSERT_BEFORE(cur_device, device, links);
4966 TAILQ_INSERT_TAIL(&target->ed_entries, device, links);
4968 target->generation++;
4969 #ifdef CAM_NEW_TRAN_CODE
4970 if (lun_id != CAM_LUN_WILDCARD) {
4971 xpt_compile_path(&path,
4976 xpt_devise_transport(&path);
4977 xpt_release_path(&path);
4979 #endif /* CAM_NEW_TRAN_CODE */
4985 xpt_release_device(struct cam_eb *bus, struct cam_et *target,
4986 struct cam_ed *device)
4991 if ((--device->refcount == 0)
4992 && ((device->flags & CAM_DEV_UNCONFIGURED) != 0)) {
4993 struct cam_devq *devq;
4995 if (device->alloc_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX
4996 || device->send_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX)
4997 panic("Removing device while still queued for ccbs");
4999 if ((device->flags & CAM_DEV_REL_TIMEOUT_PENDING) != 0)
5000 untimeout(xpt_release_devq_timeout, device,
5003 TAILQ_REMOVE(&target->ed_entries, device,links);
5004 target->generation++;
5005 xpt_max_ccbs -= device->ccbq.devq_openings;
5006 /* Release our slot in the devq */
5007 devq = bus->sim->devq;
5008 cam_devq_resize(devq, devq->alloc_queue.array_size - 1);
5010 free(device, M_DEVBUF);
5011 xpt_release_target(bus, target);
5017 xpt_dev_ccbq_resize(struct cam_path *path, int newopenings)
5027 diff = newopenings - (dev->ccbq.dev_active + dev->ccbq.dev_openings);
5028 result = cam_ccbq_resize(&dev->ccbq, newopenings);
5029 if (result == CAM_REQ_CMP && (diff < 0)) {
5030 dev->flags |= CAM_DEV_RESIZE_QUEUE_NEEDED;
5032 /* Adjust the global limit */
5033 xpt_max_ccbs += diff;
5038 static struct cam_eb *
5039 xpt_find_bus(path_id_t path_id)
5043 for (bus = TAILQ_FIRST(&xpt_busses);
5045 bus = TAILQ_NEXT(bus, links)) {
5046 if (bus->path_id == path_id) {
5054 static struct cam_et *
5055 xpt_find_target(struct cam_eb *bus, target_id_t target_id)
5057 struct cam_et *target;
5059 for (target = TAILQ_FIRST(&bus->et_entries);
5061 target = TAILQ_NEXT(target, links)) {
5062 if (target->target_id == target_id) {
5070 static struct cam_ed *
5071 xpt_find_device(struct cam_et *target, lun_id_t lun_id)
5073 struct cam_ed *device;
5075 for (device = TAILQ_FIRST(&target->ed_entries);
5077 device = TAILQ_NEXT(device, links)) {
5078 if (device->lun_id == lun_id) {
5087 union ccb *request_ccb;
5088 struct ccb_pathinq *cpi;
5090 } xpt_scan_bus_info;
5093 * To start a scan, request_ccb is an XPT_SCAN_BUS ccb.
5094 * As the scan progresses, xpt_scan_bus is used as the
5095 * callback on completion function.
5098 xpt_scan_bus(struct cam_periph *periph, union ccb *request_ccb)
5100 CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE,
5101 ("xpt_scan_bus\n"));
5102 switch (request_ccb->ccb_h.func_code) {
5105 xpt_scan_bus_info *scan_info;
5106 union ccb *work_ccb;
5107 struct cam_path *path;
5112 /* Find out the characteristics of the bus */
5113 work_ccb = xpt_alloc_ccb();
5114 xpt_setup_ccb(&work_ccb->ccb_h, request_ccb->ccb_h.path,
5115 request_ccb->ccb_h.pinfo.priority);
5116 work_ccb->ccb_h.func_code = XPT_PATH_INQ;
5117 xpt_action(work_ccb);
5118 if (work_ccb->ccb_h.status != CAM_REQ_CMP) {
5119 request_ccb->ccb_h.status = work_ccb->ccb_h.status;
5120 xpt_free_ccb(work_ccb);
5121 xpt_done(request_ccb);
5125 if ((work_ccb->cpi.hba_misc & PIM_NOINITIATOR) != 0) {
5127 * Can't scan the bus on an adapter that
5128 * cannot perform the initiator role.
5130 request_ccb->ccb_h.status = CAM_REQ_CMP;
5131 xpt_free_ccb(work_ccb);
5132 xpt_done(request_ccb);
5136 /* Save some state for use while we probe for devices */
5137 scan_info = (xpt_scan_bus_info *)
5138 malloc(sizeof(xpt_scan_bus_info), M_TEMP, M_WAITOK);
5139 scan_info->request_ccb = request_ccb;
5140 scan_info->cpi = &work_ccb->cpi;
5142 /* Cache on our stack so we can work asynchronously */
5143 max_target = scan_info->cpi->max_target;
5144 initiator_id = scan_info->cpi->initiator_id;
5147 * Don't count the initiator if the
5148 * initiator is addressable.
5150 scan_info->pending_count = max_target + 1;
5151 if (initiator_id <= max_target)
5152 scan_info->pending_count--;
5154 for (i = 0; i <= max_target; i++) {
5156 if (i == initiator_id)
5159 status = xpt_create_path(&path, xpt_periph,
5160 request_ccb->ccb_h.path_id,
5162 if (status != CAM_REQ_CMP) {
5163 printf("xpt_scan_bus: xpt_create_path failed"
5164 " with status %#x, bus scan halted\n",
5168 work_ccb = xpt_alloc_ccb();
5169 xpt_setup_ccb(&work_ccb->ccb_h, path,
5170 request_ccb->ccb_h.pinfo.priority);
5171 work_ccb->ccb_h.func_code = XPT_SCAN_LUN;
5172 work_ccb->ccb_h.cbfcnp = xpt_scan_bus;
5173 work_ccb->ccb_h.ppriv_ptr0 = scan_info;
5174 work_ccb->crcn.flags = request_ccb->crcn.flags;
5175 xpt_action(work_ccb);
5181 xpt_scan_bus_info *scan_info;
5183 target_id_t target_id;
5186 /* Reuse the same CCB to query if a device was really found */
5187 scan_info = (xpt_scan_bus_info *)request_ccb->ccb_h.ppriv_ptr0;
5188 xpt_setup_ccb(&request_ccb->ccb_h, request_ccb->ccb_h.path,
5189 request_ccb->ccb_h.pinfo.priority);
5190 request_ccb->ccb_h.func_code = XPT_GDEV_TYPE;
5192 path_id = request_ccb->ccb_h.path_id;
5193 target_id = request_ccb->ccb_h.target_id;
5194 lun_id = request_ccb->ccb_h.target_lun;
5195 xpt_action(request_ccb);
5197 if (request_ccb->ccb_h.status != CAM_REQ_CMP) {
5198 struct cam_ed *device;
5199 struct cam_et *target;
5203 * If we already probed lun 0 successfully, or
5204 * we have additional configured luns on this
5205 * target that might have "gone away", go onto
5208 target = request_ccb->ccb_h.path->target;
5210 * We may touch devices that we don't
5211 * hold references too, so ensure they
5212 * don't disappear out from under us.
5213 * The target above is referenced by the
5214 * path in the request ccb.
5218 device = TAILQ_FIRST(&target->ed_entries);
5219 if (device != NULL) {
5220 phl = device->quirk->quirks & CAM_QUIRK_HILUNS;
5221 if (device->lun_id == 0)
5222 device = TAILQ_NEXT(device, links);
5225 if ((lun_id != 0) || (device != NULL)) {
5226 if (lun_id < (CAM_SCSI2_MAXLUN-1) || phl)
5230 struct cam_ed *device;
5232 device = request_ccb->ccb_h.path->device;
5234 if ((device->quirk->quirks & CAM_QUIRK_NOLUNS) == 0) {
5235 /* Try the next lun */
5236 if (lun_id < (CAM_SCSI2_MAXLUN-1) ||
5237 (device->quirk->quirks & CAM_QUIRK_HILUNS))
5242 xpt_free_path(request_ccb->ccb_h.path);
5245 if ((lun_id == request_ccb->ccb_h.target_lun)
5246 || lun_id > scan_info->cpi->max_lun) {
5249 xpt_free_ccb(request_ccb);
5250 scan_info->pending_count--;
5251 if (scan_info->pending_count == 0) {
5252 xpt_free_ccb((union ccb *)scan_info->cpi);
5253 request_ccb = scan_info->request_ccb;
5254 free(scan_info, M_TEMP);
5255 request_ccb->ccb_h.status = CAM_REQ_CMP;
5256 xpt_done(request_ccb);
5259 /* Try the next device */
5260 struct cam_path *path;
5263 path = request_ccb->ccb_h.path;
5264 status = xpt_create_path(&path, xpt_periph,
5265 path_id, target_id, lun_id);
5266 if (status != CAM_REQ_CMP) {
5267 printf("xpt_scan_bus: xpt_create_path failed "
5268 "with status %#x, halting LUN scan\n",
5270 xpt_free_ccb(request_ccb);
5271 scan_info->pending_count--;
5272 if (scan_info->pending_count == 0) {
5274 (union ccb *)scan_info->cpi);
5275 request_ccb = scan_info->request_ccb;
5276 free(scan_info, M_TEMP);
5277 request_ccb->ccb_h.status = CAM_REQ_CMP;
5278 xpt_done(request_ccb);
5282 xpt_setup_ccb(&request_ccb->ccb_h, path,
5283 request_ccb->ccb_h.pinfo.priority);
5284 request_ccb->ccb_h.func_code = XPT_SCAN_LUN;
5285 request_ccb->ccb_h.cbfcnp = xpt_scan_bus;
5286 request_ccb->ccb_h.ppriv_ptr0 = scan_info;
5287 request_ccb->crcn.flags =
5288 scan_info->request_ccb->crcn.flags;
5289 xpt_action(request_ccb);
5304 PROBE_TUR_FOR_NEGOTIATION
5308 PROBE_INQUIRY_CKSUM = 0x01,
5309 PROBE_SERIAL_CKSUM = 0x02,
5310 PROBE_NO_ANNOUNCE = 0x04
5314 TAILQ_HEAD(, ccb_hdr) request_ccbs;
5315 probe_action action;
5316 union ccb saved_ccb;
5319 u_int8_t digest[16];
5323 xpt_scan_lun(struct cam_periph *periph, struct cam_path *path,
5324 cam_flags flags, union ccb *request_ccb)
5326 struct ccb_pathinq cpi;
5328 struct cam_path *new_path;
5329 struct cam_periph *old_periph;
5332 CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE,
5333 ("xpt_scan_lun\n"));
5335 xpt_setup_ccb(&cpi.ccb_h, path, /*priority*/1);
5336 cpi.ccb_h.func_code = XPT_PATH_INQ;
5337 xpt_action((union ccb *)&cpi);
5339 if (cpi.ccb_h.status != CAM_REQ_CMP) {
5340 if (request_ccb != NULL) {
5341 request_ccb->ccb_h.status = cpi.ccb_h.status;
5342 xpt_done(request_ccb);
5347 if ((cpi.hba_misc & PIM_NOINITIATOR) != 0) {
5349 * Can't scan the bus on an adapter that
5350 * cannot perform the initiator role.
5352 if (request_ccb != NULL) {
5353 request_ccb->ccb_h.status = CAM_REQ_CMP;
5354 xpt_done(request_ccb);
5359 if (request_ccb == NULL) {
5360 request_ccb = malloc(sizeof(union ccb), M_TEMP, M_NOWAIT);
5361 if (request_ccb == NULL) {
5362 xpt_print_path(path);
5363 printf("xpt_scan_lun: can't allocate CCB, can't "
5367 new_path = malloc(sizeof(*new_path), M_TEMP, M_NOWAIT);
5368 if (new_path == NULL) {
5369 xpt_print_path(path);
5370 printf("xpt_scan_lun: can't allocate path, can't "
5372 free(request_ccb, M_TEMP);
5375 status = xpt_compile_path(new_path, xpt_periph,
5377 path->target->target_id,
5378 path->device->lun_id);
5380 if (status != CAM_REQ_CMP) {
5381 xpt_print_path(path);
5382 printf("xpt_scan_lun: can't compile path, can't "
5384 free(request_ccb, M_TEMP);
5385 free(new_path, M_TEMP);
5388 xpt_setup_ccb(&request_ccb->ccb_h, new_path, /*priority*/ 1);
5389 request_ccb->ccb_h.cbfcnp = xptscandone;
5390 request_ccb->ccb_h.func_code = XPT_SCAN_LUN;
5391 request_ccb->crcn.flags = flags;
5395 if ((old_periph = cam_periph_find(path, "probe")) != NULL) {
5398 softc = (probe_softc *)old_periph->softc;
5399 TAILQ_INSERT_TAIL(&softc->request_ccbs, &request_ccb->ccb_h,
5402 status = cam_periph_alloc(proberegister, NULL, probecleanup,
5403 probestart, "probe",
5405 request_ccb->ccb_h.path, NULL, 0,
5408 if (status != CAM_REQ_CMP) {
5409 xpt_print_path(path);
5410 printf("xpt_scan_lun: cam_alloc_periph returned an "
5411 "error, can't continue probe\n");
5412 request_ccb->ccb_h.status = status;
5413 xpt_done(request_ccb);
5420 xptscandone(struct cam_periph *periph, union ccb *done_ccb)
5422 xpt_release_path(done_ccb->ccb_h.path);
5423 free(done_ccb->ccb_h.path, M_TEMP);
5424 free(done_ccb, M_TEMP);
5428 proberegister(struct cam_periph *periph, void *arg)
5430 union ccb *request_ccb; /* CCB representing the probe request */
5433 request_ccb = (union ccb *)arg;
5434 if (periph == NULL) {
5435 printf("proberegister: periph was NULL!!\n");
5436 return(CAM_REQ_CMP_ERR);
5439 if (request_ccb == NULL) {
5440 printf("proberegister: no probe CCB, "
5441 "can't register device\n");
5442 return(CAM_REQ_CMP_ERR);
5445 softc = (probe_softc *)malloc(sizeof(*softc), M_TEMP, M_NOWAIT);
5447 if (softc == NULL) {
5448 printf("proberegister: Unable to probe new device. "
5449 "Unable to allocate softc\n");
5450 return(CAM_REQ_CMP_ERR);
5452 TAILQ_INIT(&softc->request_ccbs);
5453 TAILQ_INSERT_TAIL(&softc->request_ccbs, &request_ccb->ccb_h,
5456 periph->softc = softc;
5457 cam_periph_acquire(periph);
5459 * Ensure we've waited at least a bus settle
5460 * delay before attempting to probe the device.
5461 * For HBAs that don't do bus resets, this won't make a difference.
5463 cam_periph_freeze_after_event(periph, &periph->path->bus->last_reset,
5465 probeschedule(periph);
5466 return(CAM_REQ_CMP);
5470 probeschedule(struct cam_periph *periph)
5472 struct ccb_pathinq cpi;
5476 softc = (probe_softc *)periph->softc;
5477 ccb = (union ccb *)TAILQ_FIRST(&softc->request_ccbs);
5479 xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1);
5480 cpi.ccb_h.func_code = XPT_PATH_INQ;
5481 xpt_action((union ccb *)&cpi);
5484 * If a device has gone away and another device, or the same one,
5485 * is back in the same place, it should have a unit attention
5486 * condition pending. It will not report the unit attention in
5487 * response to an inquiry, which may leave invalid transfer
5488 * negotiations in effect. The TUR will reveal the unit attention
5489 * condition. Only send the TUR for lun 0, since some devices
5490 * will get confused by commands other than inquiry to non-existent
5491 * luns. If you think a device has gone away start your scan from
5492 * lun 0. This will insure that any bogus transfer settings are
5495 * If we haven't seen the device before and the controller supports
5496 * some kind of transfer negotiation, negotiate with the first
5497 * sent command if no bus reset was performed at startup. This
5498 * ensures that the device is not confused by transfer negotiation
5499 * settings left over by loader or BIOS action.
5501 if (((ccb->ccb_h.path->device->flags & CAM_DEV_UNCONFIGURED) == 0)
5502 && (ccb->ccb_h.target_lun == 0)) {
5503 softc->action = PROBE_TUR;
5504 } else if ((cpi.hba_inquiry & (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE)) != 0
5505 && (cpi.hba_misc & PIM_NOBUSRESET) != 0) {
5506 proberequestdefaultnegotiation(periph);
5507 softc->action = PROBE_INQUIRY;
5509 softc->action = PROBE_INQUIRY;
5512 if (ccb->crcn.flags & CAM_EXPECT_INQ_CHANGE)
5513 softc->flags |= PROBE_NO_ANNOUNCE;
5515 softc->flags &= ~PROBE_NO_ANNOUNCE;
5517 xpt_schedule(periph, ccb->ccb_h.pinfo.priority);
5521 probestart(struct cam_periph *periph, union ccb *start_ccb)
5523 /* Probe the device that our peripheral driver points to */
5524 struct ccb_scsiio *csio;
5527 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("probestart\n"));
5529 softc = (probe_softc *)periph->softc;
5530 csio = &start_ccb->csio;
5532 switch (softc->action) {
5534 case PROBE_TUR_FOR_NEGOTIATION:
5536 scsi_test_unit_ready(csio,
5545 case PROBE_FULL_INQUIRY:
5548 struct scsi_inquiry_data *inq_buf;
5550 inq_buf = &periph->path->device->inq_data;
5552 * If the device is currently configured, we calculate an
5553 * MD5 checksum of the inquiry data, and if the serial number
5554 * length is greater than 0, add the serial number data
5555 * into the checksum as well. Once the inquiry and the
5556 * serial number check finish, we attempt to figure out
5557 * whether we still have the same device.
5559 if ((periph->path->device->flags & CAM_DEV_UNCONFIGURED) == 0) {
5561 MD5Init(&softc->context);
5562 MD5Update(&softc->context, (unsigned char *)inq_buf,
5563 sizeof(struct scsi_inquiry_data));
5564 softc->flags |= PROBE_INQUIRY_CKSUM;
5565 if (periph->path->device->serial_num_len > 0) {
5566 MD5Update(&softc->context,
5567 periph->path->device->serial_num,
5568 periph->path->device->serial_num_len);
5569 softc->flags |= PROBE_SERIAL_CKSUM;
5571 MD5Final(softc->digest, &softc->context);
5574 if (softc->action == PROBE_INQUIRY)
5575 inquiry_len = SHORT_INQUIRY_LENGTH;
5577 inquiry_len = inq_buf->additional_length + 4;
5583 (u_int8_t *)inq_buf,
5588 /*timeout*/60 * 1000);
5591 case PROBE_MODE_SENSE:
5596 mode_buf_len = sizeof(struct scsi_mode_header_6)
5597 + sizeof(struct scsi_mode_blk_desc)
5598 + sizeof(struct scsi_control_page);
5599 mode_buf = malloc(mode_buf_len, M_TEMP, M_NOWAIT);
5600 if (mode_buf != NULL) {
5601 scsi_mode_sense(csio,
5606 SMS_PAGE_CTRL_CURRENT,
5607 SMS_CONTROL_MODE_PAGE,
5614 xpt_print_path(periph->path);
5615 printf("Unable to mode sense control page - malloc failure\n");
5616 softc->action = PROBE_SERIAL_NUM;
5619 case PROBE_SERIAL_NUM:
5621 struct scsi_vpd_unit_serial_number *serial_buf;
5622 struct cam_ed* device;
5625 device = periph->path->device;
5626 device->serial_num = NULL;
5627 device->serial_num_len = 0;
5629 if ((device->quirk->quirks & CAM_QUIRK_NOSERIAL) == 0)
5630 serial_buf = (struct scsi_vpd_unit_serial_number *)
5631 malloc(sizeof(*serial_buf), M_TEMP,
5634 if (serial_buf != NULL) {
5639 (u_int8_t *)serial_buf,
5640 sizeof(*serial_buf),
5642 SVPD_UNIT_SERIAL_NUMBER,
5644 /*timeout*/60 * 1000);
5648 * We'll have to do without, let our probedone
5649 * routine finish up for us.
5651 start_ccb->csio.data_ptr = NULL;
5652 probedone(periph, start_ccb);
5656 xpt_action(start_ccb);
5660 proberequestdefaultnegotiation(struct cam_periph *periph)
5662 struct ccb_trans_settings cts;
5664 xpt_setup_ccb(&cts.ccb_h, periph->path, /*priority*/1);
5665 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
5666 #ifdef CAM_NEW_TRAN_CODE
5667 cts.type = CTS_TYPE_USER_SETTINGS;
5668 #else /* CAM_NEW_TRAN_CODE */
5669 cts.flags = CCB_TRANS_USER_SETTINGS;
5670 #endif /* CAM_NEW_TRAN_CODE */
5671 xpt_action((union ccb *)&cts);
5672 cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
5673 #ifdef CAM_NEW_TRAN_CODE
5674 cts.type = CTS_TYPE_CURRENT_SETTINGS;
5675 #else /* CAM_NEW_TRAN_CODE */
5676 cts.flags &= ~CCB_TRANS_USER_SETTINGS;
5677 cts.flags |= CCB_TRANS_CURRENT_SETTINGS;
5678 #endif /* CAM_NEW_TRAN_CODE */
5679 xpt_action((union ccb *)&cts);
5683 probedone(struct cam_periph *periph, union ccb *done_ccb)
5686 struct cam_path *path;
5689 CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("probedone\n"));
5691 softc = (probe_softc *)periph->softc;
5692 path = done_ccb->ccb_h.path;
5693 priority = done_ccb->ccb_h.pinfo.priority;
5695 switch (softc->action) {
5698 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
5700 if (cam_periph_error(done_ccb, 0,
5701 SF_NO_PRINT, NULL) == ERESTART)
5703 else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
5704 /* Don't wedge the queue */
5705 xpt_release_devq(done_ccb->ccb_h.path,
5709 softc->action = PROBE_INQUIRY;
5710 xpt_release_ccb(done_ccb);
5711 xpt_schedule(periph, priority);
5715 case PROBE_FULL_INQUIRY:
5717 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
5718 struct scsi_inquiry_data *inq_buf;
5719 u_int8_t periph_qual;
5720 u_int8_t periph_dtype;
5722 path->device->flags |= CAM_DEV_INQUIRY_DATA_VALID;
5723 inq_buf = &path->device->inq_data;
5725 periph_qual = SID_QUAL(inq_buf);
5726 periph_dtype = SID_TYPE(inq_buf);
5728 if (periph_dtype != T_NODEVICE) {
5729 switch(periph_qual) {
5730 case SID_QUAL_LU_CONNECTED:
5735 * We conservatively request only
5736 * SHORT_INQUIRY_LEN bytes of inquiry
5737 * information during our first try
5738 * at sending an INQUIRY. If the device
5739 * has more information to give,
5740 * perform a second request specifying
5741 * the amount of information the device
5742 * is willing to give.
5744 alen = inq_buf->additional_length;
5745 if (softc->action == PROBE_INQUIRY
5746 && alen > (SHORT_INQUIRY_LENGTH - 4)) {
5749 xpt_release_ccb(done_ccb);
5750 xpt_schedule(periph, priority);
5754 xpt_find_quirk(path->device);
5756 #ifdef CAM_NEW_TRAN_CODE
5757 xpt_devise_transport(path);
5758 #endif /* CAM_NEW_TRAN_CODE */
5759 if ((inq_buf->flags & SID_CmdQue) != 0)
5766 path->device->flags &=
5767 ~CAM_DEV_UNCONFIGURED;
5769 xpt_release_ccb(done_ccb);
5770 xpt_schedule(periph, priority);
5777 } else if (cam_periph_error(done_ccb, 0,
5778 done_ccb->ccb_h.target_lun > 0
5779 ? SF_RETRY_UA|SF_QUIET_IR
5781 &softc->saved_ccb) == ERESTART) {
5783 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
5784 /* Don't wedge the queue */
5785 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
5789 * If we get to this point, we got an error status back
5790 * from the inquiry and the error status doesn't require
5791 * automatically retrying the command. Therefore, the
5792 * inquiry failed. If we had inquiry information before
5793 * for this device, but this latest inquiry command failed,
5794 * the device has probably gone away. If this device isn't
5795 * already marked unconfigured, notify the peripheral
5796 * drivers that this device is no more.
5798 if ((path->device->flags & CAM_DEV_UNCONFIGURED) == 0)
5799 /* Send the async notification. */
5800 xpt_async(AC_LOST_DEVICE, path, NULL);
5802 xpt_release_ccb(done_ccb);
5805 case PROBE_MODE_SENSE:
5807 struct ccb_scsiio *csio;
5808 struct scsi_mode_header_6 *mode_hdr;
5810 csio = &done_ccb->csio;
5811 mode_hdr = (struct scsi_mode_header_6 *)csio->data_ptr;
5812 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
5813 struct scsi_control_page *page;
5816 offset = ((u_int8_t *)&mode_hdr[1])
5817 + mode_hdr->blk_desc_len;
5818 page = (struct scsi_control_page *)offset;
5819 path->device->queue_flags = page->queue_flags;
5820 } else if (cam_periph_error(done_ccb, 0,
5821 SF_RETRY_UA|SF_NO_PRINT,
5822 &softc->saved_ccb) == ERESTART) {
5824 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
5825 /* Don't wedge the queue */
5826 xpt_release_devq(done_ccb->ccb_h.path,
5827 /*count*/1, /*run_queue*/TRUE);
5829 xpt_release_ccb(done_ccb);
5830 free(mode_hdr, M_TEMP);
5831 softc->action = PROBE_SERIAL_NUM;
5832 xpt_schedule(periph, priority);
5835 case PROBE_SERIAL_NUM:
5837 struct ccb_scsiio *csio;
5838 struct scsi_vpd_unit_serial_number *serial_buf;
5845 csio = &done_ccb->csio;
5846 priority = done_ccb->ccb_h.pinfo.priority;
5848 (struct scsi_vpd_unit_serial_number *)csio->data_ptr;
5850 /* Clean up from previous instance of this device */
5851 if (path->device->serial_num != NULL) {
5852 free(path->device->serial_num, M_DEVBUF);
5853 path->device->serial_num = NULL;
5854 path->device->serial_num_len = 0;
5857 if (serial_buf == NULL) {
5859 * Don't process the command as it was never sent
5861 } else if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP
5862 && (serial_buf->length > 0)) {
5865 path->device->serial_num =
5866 (u_int8_t *)malloc((serial_buf->length + 1),
5867 M_DEVBUF, M_NOWAIT);
5868 if (path->device->serial_num != NULL) {
5869 bcopy(serial_buf->serial_num,
5870 path->device->serial_num,
5871 serial_buf->length);
5872 path->device->serial_num_len =
5874 path->device->serial_num[serial_buf->length]
5877 } else if (cam_periph_error(done_ccb, 0,
5878 SF_RETRY_UA|SF_NO_PRINT,
5879 &softc->saved_ccb) == ERESTART) {
5881 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
5882 /* Don't wedge the queue */
5883 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
5888 * Let's see if we have seen this device before.
5890 if ((softc->flags & PROBE_INQUIRY_CKSUM) != 0) {
5892 u_int8_t digest[16];
5897 (unsigned char *)&path->device->inq_data,
5898 sizeof(struct scsi_inquiry_data));
5901 MD5Update(&context, serial_buf->serial_num,
5902 serial_buf->length);
5904 MD5Final(digest, &context);
5905 if (bcmp(softc->digest, digest, 16) == 0)
5909 * XXX Do we need to do a TUR in order to ensure
5910 * that the device really hasn't changed???
5913 && ((softc->flags & PROBE_NO_ANNOUNCE) == 0))
5914 xpt_async(AC_LOST_DEVICE, path, NULL);
5916 if (serial_buf != NULL)
5917 free(serial_buf, M_TEMP);
5921 * Now that we have all the necessary
5922 * information to safely perform transfer
5923 * negotiations... Controllers don't perform
5924 * any negotiation or tagged queuing until
5925 * after the first XPT_SET_TRAN_SETTINGS ccb is
5926 * received. So, on a new device, just retreive
5927 * the user settings, and set them as the current
5928 * settings to set the device up.
5930 proberequestdefaultnegotiation(periph);
5931 xpt_release_ccb(done_ccb);
5934 * Perform a TUR to allow the controller to
5935 * perform any necessary transfer negotiation.
5937 softc->action = PROBE_TUR_FOR_NEGOTIATION;
5938 xpt_schedule(periph, priority);
5941 xpt_release_ccb(done_ccb);
5944 case PROBE_TUR_FOR_NEGOTIATION:
5945 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
5946 /* Don't wedge the queue */
5947 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
5951 path->device->flags &= ~CAM_DEV_UNCONFIGURED;
5953 if ((softc->flags & PROBE_NO_ANNOUNCE) == 0) {
5954 /* Inform the XPT that a new device has been found */
5955 done_ccb->ccb_h.func_code = XPT_GDEV_TYPE;
5956 xpt_action(done_ccb);
5958 xpt_async(AC_FOUND_DEVICE, xpt_periph->path, done_ccb);
5960 xpt_release_ccb(done_ccb);
5963 done_ccb = (union ccb *)TAILQ_FIRST(&softc->request_ccbs);
5964 TAILQ_REMOVE(&softc->request_ccbs, &done_ccb->ccb_h, periph_links.tqe);
5965 done_ccb->ccb_h.status = CAM_REQ_CMP;
5967 if (TAILQ_FIRST(&softc->request_ccbs) == NULL) {
5968 cam_periph_invalidate(periph);
5969 cam_periph_release(periph);
5971 probeschedule(periph);
5976 probecleanup(struct cam_periph *periph)
5978 free(periph->softc, M_TEMP);
5982 xpt_find_quirk(struct cam_ed *device)
5986 match = cam_quirkmatch((caddr_t)&device->inq_data,
5987 (caddr_t)xpt_quirk_table,
5988 sizeof(xpt_quirk_table)/sizeof(*xpt_quirk_table),
5989 sizeof(*xpt_quirk_table), scsi_inquiry_match);
5992 panic("xpt_find_quirk: device didn't match wildcard entry!!");
5994 device->quirk = (struct xpt_quirk_entry *)match;
5997 #ifdef CAM_NEW_TRAN_CODE
6000 xpt_devise_transport(struct cam_path *path)
6002 struct ccb_pathinq cpi;
6003 struct ccb_trans_settings cts;
6004 struct scsi_inquiry_data *inq_buf;
6006 /* Get transport information from the SIM */
6007 xpt_setup_ccb(&cpi.ccb_h, path, /*priority*/1);
6008 cpi.ccb_h.func_code = XPT_PATH_INQ;
6009 xpt_action((union ccb *)&cpi);
6012 if ((path->device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0)
6013 inq_buf = &path->device->inq_data;
6014 path->device->protocol = PROTO_SCSI;
6015 path->device->protocol_version =
6016 inq_buf != NULL ? SID_ANSI_REV(inq_buf) : cpi.protocol_version;
6017 path->device->transport = cpi.transport;
6018 path->device->transport_version = cpi.transport_version;
6021 * Any device not using SPI3 features should
6022 * be considered SPI2 or lower.
6024 if (inq_buf != NULL) {
6025 if (path->device->transport == XPORT_SPI
6026 && (inq_buf->spi3data & SID_SPI_MASK) == 0
6027 && path->device->transport_version > 2)
6028 path->device->transport_version = 2;
6030 struct cam_ed* otherdev;
6032 for (otherdev = TAILQ_FIRST(&path->target->ed_entries);
6034 otherdev = TAILQ_NEXT(otherdev, links)) {
6035 if (otherdev != path->device)
6039 if (otherdev != NULL) {
6041 * Initially assume the same versioning as
6042 * prior luns for this target.
6044 path->device->protocol_version =
6045 otherdev->protocol_version;
6046 path->device->transport_version =
6047 otherdev->transport_version;
6049 /* Until we know better, opt for safty */
6050 path->device->protocol_version = 2;
6051 if (path->device->transport == XPORT_SPI)
6052 path->device->transport_version = 2;
6054 path->device->transport_version = 0;
6060 * For a device compliant with SPC-2 we should be able
6061 * to determine the transport version supported by
6062 * scrutinizing the version descriptors in the
6066 /* Tell the controller what we think */
6067 xpt_setup_ccb(&cts.ccb_h, path, /*priority*/1);
6068 cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
6069 cts.type = CTS_TYPE_CURRENT_SETTINGS;
6070 cts.transport = path->device->transport;
6071 cts.transport_version = path->device->transport_version;
6072 cts.protocol = path->device->protocol;
6073 cts.protocol_version = path->device->protocol_version;
6074 cts.proto_specific.valid = 0;
6075 cts.xport_specific.valid = 0;
6076 xpt_action((union ccb *)&cts);
6080 xpt_set_transfer_settings(struct ccb_trans_settings *cts, struct cam_ed *device,
6083 struct ccb_pathinq cpi;
6084 struct ccb_trans_settings cur_cts;
6085 struct ccb_trans_settings_scsi *scsi;
6086 struct ccb_trans_settings_scsi *cur_scsi;
6087 struct cam_sim *sim;
6088 struct scsi_inquiry_data *inq_data;
6090 if (device == NULL) {
6091 cts->ccb_h.status = CAM_PATH_INVALID;
6092 xpt_done((union ccb *)cts);
6096 if (cts->protocol == PROTO_UNKNOWN
6097 || cts->protocol == PROTO_UNSPECIFIED) {
6098 cts->protocol = device->protocol;
6099 cts->protocol_version = device->protocol_version;
6102 if (cts->protocol_version == PROTO_VERSION_UNKNOWN
6103 || cts->protocol_version == PROTO_VERSION_UNSPECIFIED)
6104 cts->protocol_version = device->protocol_version;
6106 if (cts->protocol != device->protocol) {
6107 xpt_print_path(cts->ccb_h.path);
6108 printf("Uninitialized Protocol %x:%x?\n",
6109 cts->protocol, device->protocol);
6110 cts->protocol = device->protocol;
6113 if (cts->protocol_version > device->protocol_version) {
6115 xpt_print_path(cts->ccb_h.path);
6116 printf("Down reving Protocol Version from %d to %d?\n",
6117 cts->protocol_version, device->protocol_version);
6119 cts->protocol_version = device->protocol_version;
6122 if (cts->transport == XPORT_UNKNOWN
6123 || cts->transport == XPORT_UNSPECIFIED) {
6124 cts->transport = device->transport;
6125 cts->transport_version = device->transport_version;
6128 if (cts->transport_version == XPORT_VERSION_UNKNOWN
6129 || cts->transport_version == XPORT_VERSION_UNSPECIFIED)
6130 cts->transport_version = device->transport_version;
6132 if (cts->transport != device->transport) {
6133 xpt_print_path(cts->ccb_h.path);
6134 printf("Uninitialized Transport %x:%x?\n",
6135 cts->transport, device->transport);
6136 cts->transport = device->transport;
6139 if (cts->transport_version > device->transport_version) {
6141 xpt_print_path(cts->ccb_h.path);
6142 printf("Down reving Transport Version from %d to %d?\n",
6143 cts->transport_version,
6144 device->transport_version);
6146 cts->transport_version = device->transport_version;
6149 sim = cts->ccb_h.path->bus->sim;
6152 * Nothing more of interest to do unless
6153 * this is a device connected via the
6156 if (cts->protocol != PROTO_SCSI) {
6157 if (async_update == FALSE)
6158 (*(sim->sim_action))(sim, (union ccb *)cts);
6162 inq_data = &device->inq_data;
6163 scsi = &cts->proto_specific.scsi;
6164 xpt_setup_ccb(&cpi.ccb_h, cts->ccb_h.path, /*priority*/1);
6165 cpi.ccb_h.func_code = XPT_PATH_INQ;
6166 xpt_action((union ccb *)&cpi);
6168 /* SCSI specific sanity checking */
6169 if ((cpi.hba_inquiry & PI_TAG_ABLE) == 0
6170 || (inq_data->flags & SID_CmdQue) == 0
6171 || (device->queue_flags & SCP_QUEUE_DQUE) != 0
6172 || (device->quirk->mintags == 0)) {
6174 * Can't tag on hardware that doesn't support tags,
6175 * doesn't have it enabled, or has broken tag support.
6177 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
6180 if (async_update == FALSE) {
6182 * Perform sanity checking against what the
6183 * controller and device can do.
6185 xpt_setup_ccb(&cur_cts.ccb_h, cts->ccb_h.path, /*priority*/1);
6186 cur_cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
6187 cur_cts.type = cts->type;
6188 xpt_action((union ccb *)&cur_cts);
6190 cur_scsi = &cur_cts.proto_specific.scsi;
6191 if ((scsi->valid & CTS_SCSI_VALID_TQ) == 0) {
6192 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
6193 scsi->flags |= cur_scsi->flags & CTS_SCSI_FLAGS_TAG_ENB;
6195 if ((cur_scsi->valid & CTS_SCSI_VALID_TQ) == 0)
6196 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
6199 /* SPI specific sanity checking */
6200 if (cts->transport == XPORT_SPI && async_update == FALSE) {
6202 struct ccb_trans_settings_spi *spi;
6203 struct ccb_trans_settings_spi *cur_spi;
6205 spi = &cts->xport_specific.spi;
6207 cur_spi = &cur_cts.xport_specific.spi;
6209 /* Fill in any gaps in what the user gave us */
6210 if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0)
6211 spi->sync_period = cur_spi->sync_period;
6212 if ((cur_spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0)
6213 spi->sync_period = 0;
6214 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0)
6215 spi->sync_offset = cur_spi->sync_offset;
6216 if ((cur_spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0)
6217 spi->sync_offset = 0;
6218 if ((spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0)
6219 spi->ppr_options = cur_spi->ppr_options;
6220 if ((cur_spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0)
6221 spi->ppr_options = 0;
6222 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) == 0)
6223 spi->bus_width = cur_spi->bus_width;
6224 if ((cur_spi->valid & CTS_SPI_VALID_BUS_WIDTH) == 0)
6226 if ((spi->valid & CTS_SPI_VALID_DISC) == 0) {
6227 spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
6228 spi->flags |= cur_spi->flags & CTS_SPI_FLAGS_DISC_ENB;
6230 if ((cur_spi->valid & CTS_SPI_VALID_DISC) == 0)
6231 spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
6232 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0
6233 && (inq_data->flags & SID_Sync) == 0
6234 && cts->type == CTS_TYPE_CURRENT_SETTINGS)
6235 || ((cpi.hba_inquiry & PI_SDTR_ABLE) == 0)
6236 || (cur_spi->sync_offset == 0)
6237 || (cur_spi->sync_period == 0)) {
6239 spi->sync_period = 0;
6240 spi->sync_offset = 0;
6243 switch (spi->bus_width) {
6244 case MSG_EXT_WDTR_BUS_32_BIT:
6245 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0
6246 || (inq_data->flags & SID_WBus32) != 0
6247 || cts->type == CTS_TYPE_USER_SETTINGS)
6248 && (cpi.hba_inquiry & PI_WIDE_32) != 0)
6250 /* Fall Through to 16-bit */
6251 case MSG_EXT_WDTR_BUS_16_BIT:
6252 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0
6253 || (inq_data->flags & SID_WBus16) != 0
6254 || cts->type == CTS_TYPE_USER_SETTINGS)
6255 && (cpi.hba_inquiry & PI_WIDE_16) != 0) {
6256 spi->bus_width = MSG_EXT_WDTR_BUS_16_BIT;
6259 /* Fall Through to 8-bit */
6260 default: /* New bus width?? */
6261 case MSG_EXT_WDTR_BUS_8_BIT:
6262 /* All targets can do this */
6263 spi->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
6267 spi3caps = cpi.xport_specific.spi.ppr_options;
6268 if ((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0
6269 && cts->type == CTS_TYPE_CURRENT_SETTINGS)
6270 spi3caps &= inq_data->spi3data;
6272 if ((spi3caps & SID_SPI_CLOCK_DT) == 0)
6273 spi->ppr_options &= ~MSG_EXT_PPR_DT_REQ;
6275 if ((spi3caps & SID_SPI_IUS) == 0)
6276 spi->ppr_options &= ~MSG_EXT_PPR_IU_REQ;
6278 if ((spi3caps & SID_SPI_QAS) == 0)
6279 spi->ppr_options &= ~MSG_EXT_PPR_QAS_REQ;
6281 /* No SPI Transfer settings are allowed unless we are wide */
6282 if (spi->bus_width == 0)
6283 spi->ppr_options = 0;
6285 if ((spi->flags & CTS_SPI_FLAGS_DISC_ENB) == 0) {
6287 * Can't tag queue without disconnection.
6289 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
6290 scsi->valid |= CTS_SCSI_VALID_TQ;
6294 * If we are currently performing tagged transactions to
6295 * this device and want to change its negotiation parameters,
6296 * go non-tagged for a bit to give the controller a chance to
6297 * negotiate unhampered by tag messages.
6299 if (cts->type == CTS_TYPE_CURRENT_SETTINGS
6300 && (device->inq_flags & SID_CmdQue) != 0
6301 && (scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0
6302 && (spi->flags & (CTS_SPI_VALID_SYNC_RATE|
6303 CTS_SPI_VALID_SYNC_OFFSET|
6304 CTS_SPI_VALID_BUS_WIDTH)) != 0)
6305 xpt_toggle_tags(cts->ccb_h.path);
6308 if (cts->type == CTS_TYPE_CURRENT_SETTINGS
6309 && (scsi->valid & CTS_SCSI_VALID_TQ) != 0) {
6313 * If we are transitioning from tags to no-tags or
6314 * vice-versa, we need to carefully freeze and restart
6315 * the queue so that we don't overlap tagged and non-tagged
6316 * commands. We also temporarily stop tags if there is
6317 * a change in transfer negotiation settings to allow
6318 * "tag-less" negotiation.
6320 if ((device->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
6321 || (device->inq_flags & SID_CmdQue) != 0)
6322 device_tagenb = TRUE;
6324 device_tagenb = FALSE;
6326 if (((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0
6327 && device_tagenb == FALSE)
6328 || ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) == 0
6329 && device_tagenb == TRUE)) {
6331 if ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0) {
6333 * Delay change to use tags until after a
6334 * few commands have gone to this device so
6335 * the controller has time to perform transfer
6336 * negotiations without tagged messages getting
6339 device->tag_delay_count = CAM_TAG_DELAY_COUNT;
6340 device->flags |= CAM_DEV_TAG_AFTER_COUNT;
6342 struct ccb_relsim crs;
6344 xpt_freeze_devq(cts->ccb_h.path, /*count*/1);
6345 device->inq_flags &= ~SID_CmdQue;
6346 xpt_dev_ccbq_resize(cts->ccb_h.path,
6347 sim->max_dev_openings);
6348 device->flags &= ~CAM_DEV_TAG_AFTER_COUNT;
6349 device->tag_delay_count = 0;
6351 xpt_setup_ccb(&crs.ccb_h, cts->ccb_h.path,
6353 crs.ccb_h.func_code = XPT_REL_SIMQ;
6354 crs.release_flags = RELSIM_RELEASE_AFTER_QEMPTY;
6356 = crs.release_timeout
6359 xpt_action((union ccb *)&crs);
6363 if (async_update == FALSE)
6364 (*(sim->sim_action))(sim, (union ccb *)cts);
6367 #else /* CAM_NEW_TRAN_CODE */
6370 xpt_set_transfer_settings(struct ccb_trans_settings *cts, struct cam_ed *device,
6373 struct cam_sim *sim;
6376 sim = cts->ccb_h.path->bus->sim;
6377 if (async_update == FALSE) {
6378 struct scsi_inquiry_data *inq_data;
6379 struct ccb_pathinq cpi;
6380 struct ccb_trans_settings cur_cts;
6382 if (device == NULL) {
6383 cts->ccb_h.status = CAM_PATH_INVALID;
6384 xpt_done((union ccb *)cts);
6389 * Perform sanity checking against what the
6390 * controller and device can do.
6392 xpt_setup_ccb(&cpi.ccb_h, cts->ccb_h.path, /*priority*/1);
6393 cpi.ccb_h.func_code = XPT_PATH_INQ;
6394 xpt_action((union ccb *)&cpi);
6395 xpt_setup_ccb(&cur_cts.ccb_h, cts->ccb_h.path, /*priority*/1);
6396 cur_cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
6397 cur_cts.flags = CCB_TRANS_CURRENT_SETTINGS;
6398 xpt_action((union ccb *)&cur_cts);
6399 inq_data = &device->inq_data;
6401 /* Fill in any gaps in what the user gave us */
6402 if ((cts->valid & CCB_TRANS_SYNC_RATE_VALID) == 0)
6403 cts->sync_period = cur_cts.sync_period;
6404 if ((cts->valid & CCB_TRANS_SYNC_OFFSET_VALID) == 0)
6405 cts->sync_offset = cur_cts.sync_offset;
6406 if ((cts->valid & CCB_TRANS_BUS_WIDTH_VALID) == 0)
6407 cts->bus_width = cur_cts.bus_width;
6408 if ((cts->valid & CCB_TRANS_DISC_VALID) == 0) {
6409 cts->flags &= ~CCB_TRANS_DISC_ENB;
6410 cts->flags |= cur_cts.flags & CCB_TRANS_DISC_ENB;
6412 if ((cts->valid & CCB_TRANS_TQ_VALID) == 0) {
6413 cts->flags &= ~CCB_TRANS_TAG_ENB;
6414 cts->flags |= cur_cts.flags & CCB_TRANS_TAG_ENB;
6417 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0
6418 && (inq_data->flags & SID_Sync) == 0)
6419 || ((cpi.hba_inquiry & PI_SDTR_ABLE) == 0)
6420 || (cts->sync_offset == 0)
6421 || (cts->sync_period == 0)) {
6423 cts->sync_period = 0;
6424 cts->sync_offset = 0;
6425 } else if ((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0
6426 && (inq_data->spi3data & SID_SPI_CLOCK_DT) == 0
6427 && cts->sync_period <= 0x9) {
6429 * Don't allow DT transmission rates if the
6430 * device does not support it.
6432 cts->sync_period = 0xa;
6435 switch (cts->bus_width) {
6436 case MSG_EXT_WDTR_BUS_32_BIT:
6437 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0
6438 || (inq_data->flags & SID_WBus32) != 0)
6439 && (cpi.hba_inquiry & PI_WIDE_32) != 0)
6441 /* Fall Through to 16-bit */
6442 case MSG_EXT_WDTR_BUS_16_BIT:
6443 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0
6444 || (inq_data->flags & SID_WBus16) != 0)
6445 && (cpi.hba_inquiry & PI_WIDE_16) != 0) {
6446 cts->bus_width = MSG_EXT_WDTR_BUS_16_BIT;
6449 /* Fall Through to 8-bit */
6450 default: /* New bus width?? */
6451 case MSG_EXT_WDTR_BUS_8_BIT:
6452 /* All targets can do this */
6453 cts->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
6457 if ((cts->flags & CCB_TRANS_DISC_ENB) == 0) {
6459 * Can't tag queue without disconnection.
6461 cts->flags &= ~CCB_TRANS_TAG_ENB;
6462 cts->valid |= CCB_TRANS_TQ_VALID;
6465 if ((cpi.hba_inquiry & PI_TAG_ABLE) == 0
6466 || (inq_data->flags & SID_CmdQue) == 0
6467 || (device->queue_flags & SCP_QUEUE_DQUE) != 0
6468 || (device->quirk->mintags == 0)) {
6470 * Can't tag on hardware that doesn't support,
6471 * doesn't have it enabled, or has broken tag support.
6473 cts->flags &= ~CCB_TRANS_TAG_ENB;
6478 if ((cts->valid & CCB_TRANS_TQ_VALID) != 0) {
6482 * If we are transitioning from tags to no-tags or
6483 * vice-versa, we need to carefully freeze and restart
6484 * the queue so that we don't overlap tagged and non-tagged
6485 * commands. We also temporarily stop tags if there is
6486 * a change in transfer negotiation settings to allow
6487 * "tag-less" negotiation.
6489 if ((device->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
6490 || (device->inq_flags & SID_CmdQue) != 0)
6491 device_tagenb = TRUE;
6493 device_tagenb = FALSE;
6495 if (((cts->flags & CCB_TRANS_TAG_ENB) != 0
6496 && device_tagenb == FALSE)
6497 || ((cts->flags & CCB_TRANS_TAG_ENB) == 0
6498 && device_tagenb == TRUE)) {
6500 if ((cts->flags & CCB_TRANS_TAG_ENB) != 0) {
6502 * Delay change to use tags until after a
6503 * few commands have gone to this device so
6504 * the controller has time to perform transfer
6505 * negotiations without tagged messages getting
6508 device->tag_delay_count = CAM_TAG_DELAY_COUNT;
6509 device->flags |= CAM_DEV_TAG_AFTER_COUNT;
6511 xpt_freeze_devq(cts->ccb_h.path, /*count*/1);
6513 device->inq_flags &= ~SID_CmdQue;
6514 xpt_dev_ccbq_resize(cts->ccb_h.path,
6515 sim->max_dev_openings);
6516 device->flags &= ~CAM_DEV_TAG_AFTER_COUNT;
6517 device->tag_delay_count = 0;
6522 if (async_update == FALSE) {
6524 * If we are currently performing tagged transactions to
6525 * this device and want to change its negotiation parameters,
6526 * go non-tagged for a bit to give the controller a chance to
6527 * negotiate unhampered by tag messages.
6529 if ((device->inq_flags & SID_CmdQue) != 0
6530 && (cts->flags & (CCB_TRANS_SYNC_RATE_VALID|
6531 CCB_TRANS_SYNC_OFFSET_VALID|
6532 CCB_TRANS_BUS_WIDTH_VALID)) != 0)
6533 xpt_toggle_tags(cts->ccb_h.path);
6535 (*(sim->sim_action))(sim, (union ccb *)cts);
6539 struct ccb_relsim crs;
6541 xpt_setup_ccb(&crs.ccb_h, cts->ccb_h.path,
6543 crs.ccb_h.func_code = XPT_REL_SIMQ;
6544 crs.release_flags = RELSIM_RELEASE_AFTER_QEMPTY;
6546 = crs.release_timeout
6549 xpt_action((union ccb *)&crs);
6554 #endif /* CAM_NEW_TRAN_CODE */
6557 xpt_toggle_tags(struct cam_path *path)
6562 * Give controllers a chance to renegotiate
6563 * before starting tag operations. We
6564 * "toggle" tagged queuing off then on
6565 * which causes the tag enable command delay
6566 * counter to come into effect.
6569 if ((dev->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
6570 || ((dev->inq_flags & SID_CmdQue) != 0
6571 && (dev->inq_flags & (SID_Sync|SID_WBus16|SID_WBus32)) != 0)) {
6572 struct ccb_trans_settings cts;
6574 xpt_setup_ccb(&cts.ccb_h, path, 1);
6575 #ifdef CAM_NEW_TRAN_CODE
6576 cts.protocol = PROTO_SCSI;
6577 cts.protocol_version = PROTO_VERSION_UNSPECIFIED;
6578 cts.transport = XPORT_UNSPECIFIED;
6579 cts.transport_version = XPORT_VERSION_UNSPECIFIED;
6580 cts.proto_specific.scsi.flags = 0;
6581 cts.proto_specific.scsi.valid = CTS_SCSI_VALID_TQ;
6582 #else /* CAM_NEW_TRAN_CODE */
6584 cts.valid = CCB_TRANS_TQ_VALID;
6585 #endif /* CAM_NEW_TRAN_CODE */
6586 xpt_set_transfer_settings(&cts, path->device,
6587 /*async_update*/TRUE);
6588 #ifdef CAM_NEW_TRAN_CODE
6589 cts.proto_specific.scsi.flags = CTS_SCSI_FLAGS_TAG_ENB;
6590 #else /* CAM_NEW_TRAN_CODE */
6591 cts.flags = CCB_TRANS_TAG_ENB;
6592 #endif /* CAM_NEW_TRAN_CODE */
6593 xpt_set_transfer_settings(&cts, path->device,
6594 /*async_update*/TRUE);
6599 xpt_start_tags(struct cam_path *path)
6601 struct ccb_relsim crs;
6602 struct cam_ed *device;
6603 struct cam_sim *sim;
6606 device = path->device;
6607 sim = path->bus->sim;
6608 device->flags &= ~CAM_DEV_TAG_AFTER_COUNT;
6609 xpt_freeze_devq(path, /*count*/1);
6610 device->inq_flags |= SID_CmdQue;
6611 newopenings = min(device->quirk->maxtags, sim->max_tagged_dev_openings);
6612 xpt_dev_ccbq_resize(path, newopenings);
6613 xpt_setup_ccb(&crs.ccb_h, path, /*priority*/1);
6614 crs.ccb_h.func_code = XPT_REL_SIMQ;
6615 crs.release_flags = RELSIM_RELEASE_AFTER_QEMPTY;
6617 = crs.release_timeout
6620 xpt_action((union ccb *)&crs);
6623 static int busses_to_config;
6624 static int busses_to_reset;
6627 xptconfigbuscountfunc(struct cam_eb *bus, void *arg)
6629 if (bus->path_id != CAM_XPT_PATH_ID) {
6630 struct cam_path path;
6631 struct ccb_pathinq cpi;
6635 xpt_compile_path(&path, NULL, bus->path_id,
6636 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
6637 xpt_setup_ccb(&cpi.ccb_h, &path, /*priority*/1);
6638 cpi.ccb_h.func_code = XPT_PATH_INQ;
6639 xpt_action((union ccb *)&cpi);
6640 can_negotiate = cpi.hba_inquiry;
6641 can_negotiate &= (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE);
6642 if ((cpi.hba_misc & PIM_NOBUSRESET) == 0
6645 xpt_release_path(&path);
6652 xptconfigfunc(struct cam_eb *bus, void *arg)
6654 struct cam_path *path;
6655 union ccb *work_ccb;
6657 if (bus->path_id != CAM_XPT_PATH_ID) {
6661 work_ccb = xpt_alloc_ccb();
6662 if ((status = xpt_create_path(&path, xpt_periph, bus->path_id,
6663 CAM_TARGET_WILDCARD,
6664 CAM_LUN_WILDCARD)) !=CAM_REQ_CMP){
6665 printf("xptconfigfunc: xpt_create_path failed with "
6666 "status %#x for bus %d\n", status, bus->path_id);
6667 printf("xptconfigfunc: halting bus configuration\n");
6668 xpt_free_ccb(work_ccb);
6670 xpt_finishconfig(xpt_periph, NULL);
6673 xpt_setup_ccb(&work_ccb->ccb_h, path, /*priority*/1);
6674 work_ccb->ccb_h.func_code = XPT_PATH_INQ;
6675 xpt_action(work_ccb);
6676 if (work_ccb->ccb_h.status != CAM_REQ_CMP) {
6677 printf("xptconfigfunc: CPI failed on bus %d "
6678 "with status %d\n", bus->path_id,
6679 work_ccb->ccb_h.status);
6680 xpt_finishconfig(xpt_periph, work_ccb);
6684 can_negotiate = work_ccb->cpi.hba_inquiry;
6685 can_negotiate &= (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE);
6686 if ((work_ccb->cpi.hba_misc & PIM_NOBUSRESET) == 0
6687 && (can_negotiate != 0)) {
6688 xpt_setup_ccb(&work_ccb->ccb_h, path, /*priority*/1);
6689 work_ccb->ccb_h.func_code = XPT_RESET_BUS;
6690 work_ccb->ccb_h.cbfcnp = NULL;
6691 CAM_DEBUG(path, CAM_DEBUG_SUBTRACE,
6692 ("Resetting Bus\n"));
6693 xpt_action(work_ccb);
6694 xpt_finishconfig(xpt_periph, work_ccb);
6696 /* Act as though we performed a successful BUS RESET */
6697 work_ccb->ccb_h.func_code = XPT_RESET_BUS;
6698 xpt_finishconfig(xpt_periph, work_ccb);
6706 xpt_config(void *arg)
6709 * Now that interrupts are enabled, go find our devices
6713 /* Setup debugging flags and path */
6714 #ifdef CAM_DEBUG_FLAGS
6715 cam_dflags = CAM_DEBUG_FLAGS;
6716 #else /* !CAM_DEBUG_FLAGS */
6717 cam_dflags = CAM_DEBUG_NONE;
6718 #endif /* CAM_DEBUG_FLAGS */
6719 #ifdef CAM_DEBUG_BUS
6720 if (cam_dflags != CAM_DEBUG_NONE) {
6721 if (xpt_create_path(&cam_dpath, xpt_periph,
6722 CAM_DEBUG_BUS, CAM_DEBUG_TARGET,
6723 CAM_DEBUG_LUN) != CAM_REQ_CMP) {
6724 printf("xpt_config: xpt_create_path() failed for debug"
6725 " target %d:%d:%d, debugging disabled\n",
6726 CAM_DEBUG_BUS, CAM_DEBUG_TARGET, CAM_DEBUG_LUN);
6727 cam_dflags = CAM_DEBUG_NONE;
6731 #else /* !CAM_DEBUG_BUS */
6733 #endif /* CAM_DEBUG_BUS */
6734 #endif /* CAMDEBUG */
6737 * Scan all installed busses.
6739 xpt_for_all_busses(xptconfigbuscountfunc, NULL);
6741 if (busses_to_config == 0) {
6742 /* Call manually because we don't have any busses */
6743 xpt_finishconfig(xpt_periph, NULL);
6745 if (busses_to_reset > 0 && SCSI_DELAY >= 2000) {
6746 printf("Waiting %d seconds for SCSI "
6747 "devices to settle\n", SCSI_DELAY/1000);
6749 xpt_for_all_busses(xptconfigfunc, NULL);
6754 * If the given device only has one peripheral attached to it, and if that
6755 * peripheral is the passthrough driver, announce it. This insures that the
6756 * user sees some sort of announcement for every peripheral in their system.
6759 xptpassannouncefunc(struct cam_ed *device, void *arg)
6761 struct cam_periph *periph;
6764 for (periph = SLIST_FIRST(&device->periphs), i = 0; periph != NULL;
6765 periph = SLIST_NEXT(periph, periph_links), i++);
6767 periph = SLIST_FIRST(&device->periphs);
6769 && (strncmp(periph->periph_name, "pass", 4) == 0))
6770 xpt_announce_periph(periph, NULL);
6776 xpt_finishconfig(struct cam_periph *periph, union ccb *done_ccb)
6778 struct periph_driver **p_drv;
6781 if (done_ccb != NULL) {
6782 CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE,
6783 ("xpt_finishconfig\n"));
6784 switch(done_ccb->ccb_h.func_code) {
6786 if (done_ccb->ccb_h.status == CAM_REQ_CMP) {
6787 done_ccb->ccb_h.func_code = XPT_SCAN_BUS;
6788 done_ccb->ccb_h.cbfcnp = xpt_finishconfig;
6789 xpt_action(done_ccb);
6795 xpt_free_path(done_ccb->ccb_h.path);
6801 if (busses_to_config == 0) {
6802 /* Register all the peripheral drivers */
6803 /* XXX This will have to change when we have loadable modules */
6804 p_drv = periph_drivers;
6805 for (i = 0; p_drv[i] != NULL; i++) {
6806 (*p_drv[i]->init)();
6810 * Check for devices with no "standard" peripheral driver
6811 * attached. For any devices like that, announce the
6812 * passthrough driver so the user will see something.
6814 xpt_for_all_devices(xptpassannouncefunc, NULL);
6816 /* Release our hook so that the boot can continue. */
6817 config_intrhook_disestablish(xpt_config_hook);
6818 free(xpt_config_hook, M_TEMP);
6819 xpt_config_hook = NULL;
6821 if (done_ccb != NULL)
6822 xpt_free_ccb(done_ccb);
6826 xptaction(struct cam_sim *sim, union ccb *work_ccb)
6828 CAM_DEBUG(work_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("xptaction\n"));
6830 switch (work_ccb->ccb_h.func_code) {
6831 /* Common cases first */
6832 case XPT_PATH_INQ: /* Path routing inquiry */
6834 struct ccb_pathinq *cpi;
6836 cpi = &work_ccb->cpi;
6837 cpi->version_num = 1; /* XXX??? */
6838 cpi->hba_inquiry = 0;
6839 cpi->target_sprt = 0;
6841 cpi->hba_eng_cnt = 0;
6842 cpi->max_target = 0;
6844 cpi->initiator_id = 0;
6845 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
6846 strncpy(cpi->hba_vid, "", HBA_IDLEN);
6847 strncpy(cpi->dev_name, sim->sim_name, DEV_IDLEN);
6848 cpi->unit_number = sim->unit_number;
6849 cpi->bus_id = sim->bus_id;
6850 cpi->base_transfer_speed = 0;
6851 #ifdef CAM_NEW_TRAN_CODE
6852 cpi->protocol = PROTO_UNSPECIFIED;
6853 cpi->protocol_version = PROTO_VERSION_UNSPECIFIED;
6854 cpi->transport = XPORT_UNSPECIFIED;
6855 cpi->transport_version = XPORT_VERSION_UNSPECIFIED;
6856 #endif /* CAM_NEW_TRAN_CODE */
6857 cpi->ccb_h.status = CAM_REQ_CMP;
6862 work_ccb->ccb_h.status = CAM_REQ_INVALID;
6869 * The xpt as a "controller" has no interrupt sources, so polling
6873 xptpoll(struct cam_sim *sim)
6878 camisr(void *V_queue)
6880 cam_isrq_t *queue = V_queue;
6882 struct ccb_hdr *ccb_h;
6885 while ((ccb_h = TAILQ_FIRST(queue)) != NULL) {
6888 TAILQ_REMOVE(queue, ccb_h, sim_links.tqe);
6889 ccb_h->pinfo.index = CAM_UNQUEUED_INDEX;
6892 CAM_DEBUG(ccb_h->path, CAM_DEBUG_TRACE,
6897 if (ccb_h->flags & CAM_HIGH_POWER) {
6898 struct highpowerlist *hphead;
6899 struct cam_ed *device;
6900 union ccb *send_ccb;
6902 hphead = &highpowerq;
6904 send_ccb = (union ccb *)STAILQ_FIRST(hphead);
6907 * Increment the count since this command is done.
6912 * Any high powered commands queued up?
6914 if (send_ccb != NULL) {
6915 device = send_ccb->ccb_h.path->device;
6917 STAILQ_REMOVE_HEAD(hphead, xpt_links.stqe);
6919 xpt_release_devq(send_ccb->ccb_h.path,
6920 /*count*/1, /*runqueue*/TRUE);
6923 if ((ccb_h->func_code & XPT_FC_USER_CCB) == 0) {
6926 dev = ccb_h->path->device;
6929 cam_ccbq_ccb_done(&dev->ccbq, (union ccb *)ccb_h);
6931 ccb_h->path->bus->sim->devq->send_active--;
6932 ccb_h->path->bus->sim->devq->send_openings++;
6935 if (((dev->flags & CAM_DEV_REL_ON_COMPLETE) != 0
6936 && (ccb_h->status&CAM_STATUS_MASK) != CAM_REQUEUE_REQ)
6937 || ((dev->flags & CAM_DEV_REL_ON_QUEUE_EMPTY) != 0
6938 && (dev->ccbq.dev_active == 0))) {
6940 xpt_release_devq(ccb_h->path, /*count*/1,
6944 if ((dev->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
6945 && (--dev->tag_delay_count == 0))
6946 xpt_start_tags(ccb_h->path);
6948 if ((dev->ccbq.queue.entries > 0)
6949 && (dev->qfrozen_cnt == 0)
6950 && (device_is_send_queued(dev) == 0)) {
6951 runq = xpt_schedule_dev_sendq(ccb_h->path->bus,
6956 if (ccb_h->status & CAM_RELEASE_SIMQ) {
6957 xpt_release_simq(ccb_h->path->bus->sim,
6959 ccb_h->status &= ~CAM_RELEASE_SIMQ;
6963 if ((ccb_h->flags & CAM_DEV_QFRZDIS)
6964 && (ccb_h->status & CAM_DEV_QFRZN)) {
6965 xpt_release_devq(ccb_h->path, /*count*/1,
6967 ccb_h->status &= ~CAM_DEV_QFRZN;
6969 xpt_run_dev_sendq(ccb_h->path->bus);
6972 /* Call the peripheral driver's callback */
6973 (*ccb_h->cbfcnp)(ccb_h->path->periph, (union ccb *)ccb_h);
6975 /* Raise IPL for while test */