2 * Implementation of the Common Access Method Transport (XPT) layer.
4 * Copyright (c) 1997, 1998, 1999 Justin T. Gibbs.
5 * Copyright (c) 1997, 1998, 1999 Kenneth D. Merry.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions, and the following disclaimer,
13 * without modification, immediately at the beginning of the file.
14 * 2. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
21 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * $FreeBSD: src/sys/cam/cam_xpt.c,v 1.80.2.18 2002/12/09 17:31:55 gibbs Exp $
31 #include <sys/param.h>
32 #include <sys/systm.h>
33 #include <sys/types.h>
34 #include <sys/malloc.h>
35 #include <sys/kernel.h>
38 #include <sys/device.h>
39 #include <sys/fcntl.h>
41 #include <sys/devicestat.h>
42 #include <sys/interrupt.h>
44 #include <sys/taskqueue.h>
46 #include <sys/thread.h>
48 #include <sys/spinlock.h>
50 #include <sys/thread2.h>
51 #include <sys/spinlock2.h>
52 #include <sys/mplock2.h>
54 #include <machine/clock.h>
55 #include <machine/stdarg.h>
59 #include "cam_periph.h"
62 #include "cam_xpt_sim.h"
63 #include "cam_xpt_periph.h"
64 #include "cam_debug.h"
66 #include "scsi/scsi_all.h"
67 #include "scsi/scsi_message.h"
68 #include "scsi/scsi_pass.h"
69 #include <sys/kthread.h>
72 /* Datastructures internal to the xpt layer */
73 MALLOC_DEFINE(M_CAMXPT
, "CAM XPT", "CAM XPT buffers");
75 /* Object for defering XPT actions to a taskqueue */
83 * Definition of an async handler callback block. These are used to add
84 * SIMs and peripherals to the async callback lists.
87 SLIST_ENTRY(async_node
) links
;
88 u_int32_t event_enable
; /* Async Event enables */
89 void (*callback
)(void *arg
, u_int32_t code
,
90 struct cam_path
*path
, void *args
);
94 SLIST_HEAD(async_list
, async_node
);
95 SLIST_HEAD(periph_list
, cam_periph
);
98 * This is the maximum number of high powered commands (e.g. start unit)
99 * that can be outstanding at a particular time.
101 #ifndef CAM_MAX_HIGHPOWER
102 #define CAM_MAX_HIGHPOWER 4
106 * Structure for queueing a device in a run queue.
107 * There is one run queue for allocating new ccbs,
108 * and another for sending ccbs to the controller.
110 struct cam_ed_qinfo
{
112 struct cam_ed
*device
;
116 * The CAM EDT (Existing Device Table) contains the device information for
117 * all devices for all busses in the system. The table contains a
118 * cam_ed structure for each device on the bus.
121 TAILQ_ENTRY(cam_ed
) links
;
122 struct cam_ed_qinfo alloc_ccb_entry
;
123 struct cam_ed_qinfo send_ccb_entry
;
124 struct cam_et
*target
;
128 * Queue of type drivers wanting to do
129 * work on this device.
131 struct cam_ccbq ccbq
; /* Queue of pending ccbs */
132 struct async_list asyncs
; /* Async callback info for this B/T/L */
133 struct periph_list periphs
; /* All attached devices */
134 u_int generation
; /* Generation number */
135 struct cam_periph
*owner
; /* Peripheral driver's ownership tag */
136 struct xpt_quirk_entry
*quirk
; /* Oddities about this device */
137 /* Storage for the inquiry data */
139 u_int protocol_version
;
141 u_int transport_version
;
142 struct scsi_inquiry_data inq_data
;
143 u_int8_t inq_flags
; /*
144 * Current settings for inquiry flags.
145 * This allows us to override settings
146 * like disconnection and tagged
147 * queuing for a device.
149 u_int8_t queue_flags
; /* Queue flags from the control page */
150 u_int8_t serial_num_len
;
151 u_int8_t
*serial_num
;
152 u_int32_t qfrozen_cnt
;
154 #define CAM_DEV_UNCONFIGURED 0x01
155 #define CAM_DEV_REL_TIMEOUT_PENDING 0x02
156 #define CAM_DEV_REL_ON_COMPLETE 0x04
157 #define CAM_DEV_REL_ON_QUEUE_EMPTY 0x08
158 #define CAM_DEV_RESIZE_QUEUE_NEEDED 0x10
159 #define CAM_DEV_TAG_AFTER_COUNT 0x20
160 #define CAM_DEV_INQUIRY_DATA_VALID 0x40
161 #define CAM_DEV_IN_DV 0x80
162 #define CAM_DEV_DV_HIT_BOTTOM 0x100
163 u_int32_t tag_delay_count
;
164 #define CAM_TAG_DELAY_COUNT 5
165 u_int32_t tag_saved_openings
;
167 struct callout callout
;
171 * Each target is represented by an ET (Existing Target). These
172 * entries are created when a target is successfully probed with an
173 * identify, and removed when a device fails to respond after a number
174 * of retries, or a bus rescan finds the device missing.
177 TAILQ_HEAD(, cam_ed
) ed_entries
;
178 TAILQ_ENTRY(cam_et
) links
;
180 target_id_t target_id
;
183 struct timeval last_reset
; /* uptime of last reset */
187 * Each bus is represented by an EB (Existing Bus). These entries
188 * are created by calls to xpt_bus_register and deleted by calls to
189 * xpt_bus_deregister.
192 TAILQ_HEAD(, cam_et
) et_entries
;
193 TAILQ_ENTRY(cam_eb
) links
;
196 struct timeval last_reset
; /* uptime of last reset */
198 #define CAM_EB_RUNQ_SCHEDULED 0x01
201 int counted_to_config
; /* busses_to_config */
205 struct cam_periph
*periph
;
207 struct cam_et
*target
;
208 struct cam_ed
*device
;
211 struct xpt_quirk_entry
{
212 struct scsi_inquiry_pattern inq_pat
;
214 #define CAM_QUIRK_NOLUNS 0x01
215 #define CAM_QUIRK_NOSERIAL 0x02
216 #define CAM_QUIRK_HILUNS 0x04
217 #define CAM_QUIRK_NOHILUNS 0x08
222 static int cam_srch_hi
= 0;
223 TUNABLE_INT("kern.cam.cam_srch_hi", &cam_srch_hi
);
224 static int sysctl_cam_search_luns(SYSCTL_HANDLER_ARGS
);
225 SYSCTL_PROC(_kern_cam
, OID_AUTO
, cam_srch_hi
, CTLTYPE_INT
|CTLFLAG_RW
, 0, 0,
226 sysctl_cam_search_luns
, "I",
227 "allow search above LUN 7 for SCSI3 and greater devices");
229 #define CAM_SCSI2_MAXLUN 8
231 * If we're not quirked to search <= the first 8 luns
232 * and we are either quirked to search above lun 8,
233 * or we're > SCSI-2 and we've enabled hilun searching,
234 * or we're > SCSI-2 and the last lun was a success,
235 * we can look for luns above lun 8.
237 #define CAN_SRCH_HI_SPARSE(dv) \
238 (((dv->quirk->quirks & CAM_QUIRK_NOHILUNS) == 0) \
239 && ((dv->quirk->quirks & CAM_QUIRK_HILUNS) \
240 || (SID_ANSI_REV(&dv->inq_data) > SCSI_REV_2 && cam_srch_hi)))
242 #define CAN_SRCH_HI_DENSE(dv) \
243 (((dv->quirk->quirks & CAM_QUIRK_NOHILUNS) == 0) \
244 && ((dv->quirk->quirks & CAM_QUIRK_HILUNS) \
245 || (SID_ANSI_REV(&dv->inq_data) > SCSI_REV_2)))
253 u_int32_t xpt_generation
;
255 /* number of high powered commands that can go through right now */
256 STAILQ_HEAD(highpowerlist
, ccb_hdr
) highpowerq
;
259 /* queue for handling async rescan requests. */
260 TAILQ_HEAD(, ccb_hdr
) ccb_scanq
;
261 int ccb_scanq_running
;
263 /* Registered busses */
264 TAILQ_HEAD(,cam_eb
) xpt_busses
;
265 u_int bus_generation
;
267 struct intr_config_hook
*xpt_config_hook
;
269 struct lock xpt_topo_lock
;
270 struct lock xpt_lock
;
273 static const char quantum
[] = "QUANTUM";
274 static const char sony
[] = "SONY";
275 static const char west_digital
[] = "WDIGTL";
276 static const char samsung
[] = "SAMSUNG";
277 static const char seagate
[] = "SEAGATE";
278 static const char microp
[] = "MICROP";
280 static struct xpt_quirk_entry xpt_quirk_table
[] =
283 /* Reports QUEUE FULL for temporary resource shortages */
284 { T_DIRECT
, SIP_MEDIA_FIXED
, quantum
, "XP39100*", "*" },
285 /*quirks*/0, /*mintags*/24, /*maxtags*/32
288 /* Reports QUEUE FULL for temporary resource shortages */
289 { T_DIRECT
, SIP_MEDIA_FIXED
, quantum
, "XP34550*", "*" },
290 /*quirks*/0, /*mintags*/24, /*maxtags*/32
293 /* Reports QUEUE FULL for temporary resource shortages */
294 { T_DIRECT
, SIP_MEDIA_FIXED
, quantum
, "XP32275*", "*" },
295 /*quirks*/0, /*mintags*/24, /*maxtags*/32
298 /* Broken tagged queuing drive */
299 { T_DIRECT
, SIP_MEDIA_FIXED
, microp
, "4421-07*", "*" },
300 /*quirks*/0, /*mintags*/0, /*maxtags*/0
303 /* Broken tagged queuing drive */
304 { T_DIRECT
, SIP_MEDIA_FIXED
, "HP", "C372*", "*" },
305 /*quirks*/0, /*mintags*/0, /*maxtags*/0
308 /* Broken tagged queuing drive */
309 { T_DIRECT
, SIP_MEDIA_FIXED
, microp
, "3391*", "x43h" },
310 /*quirks*/0, /*mintags*/0, /*maxtags*/0
314 * Unfortunately, the Quantum Atlas III has the same
315 * problem as the Atlas II drives above.
316 * Reported by: "Johan Granlund" <johan@granlund.nu>
318 * For future reference, the drive with the problem was:
319 * QUANTUM QM39100TD-SW N1B0
321 * It's possible that Quantum will fix the problem in later
322 * firmware revisions. If that happens, the quirk entry
323 * will need to be made specific to the firmware revisions
327 /* Reports QUEUE FULL for temporary resource shortages */
328 { T_DIRECT
, SIP_MEDIA_FIXED
, quantum
, "QM39100*", "*" },
329 /*quirks*/0, /*mintags*/24, /*maxtags*/32
333 * 18 Gig Atlas III, same problem as the 9G version.
334 * Reported by: Andre Albsmeier
335 * <andre.albsmeier@mchp.siemens.de>
337 * For future reference, the drive with the problem was:
338 * QUANTUM QM318000TD-S N491
340 /* Reports QUEUE FULL for temporary resource shortages */
341 { T_DIRECT
, SIP_MEDIA_FIXED
, quantum
, "QM318000*", "*" },
342 /*quirks*/0, /*mintags*/24, /*maxtags*/32
346 * Broken tagged queuing drive
347 * Reported by: Bret Ford <bford@uop.cs.uop.edu>
348 * and: Martin Renters <martin@tdc.on.ca>
350 { T_DIRECT
, SIP_MEDIA_FIXED
, seagate
, "ST410800*", "71*" },
351 /*quirks*/0, /*mintags*/0, /*maxtags*/0
354 * The Seagate Medalist Pro drives have very poor write
355 * performance with anything more than 2 tags.
357 * Reported by: Paul van der Zwan <paulz@trantor.xs4all.nl>
358 * Drive: <SEAGATE ST36530N 1444>
360 * Reported by: Jeremy Lea <reg@shale.csir.co.za>
361 * Drive: <SEAGATE ST34520W 1281>
363 * No one has actually reported that the 9G version
364 * (ST39140*) of the Medalist Pro has the same problem, but
365 * we're assuming that it does because the 4G and 6.5G
366 * versions of the drive are broken.
369 { T_DIRECT
, SIP_MEDIA_FIXED
, seagate
, "ST34520*", "*"},
370 /*quirks*/0, /*mintags*/2, /*maxtags*/2
373 { T_DIRECT
, SIP_MEDIA_FIXED
, seagate
, "ST36530*", "*"},
374 /*quirks*/0, /*mintags*/2, /*maxtags*/2
377 { T_DIRECT
, SIP_MEDIA_FIXED
, seagate
, "ST39140*", "*"},
378 /*quirks*/0, /*mintags*/2, /*maxtags*/2
382 * Slow when tagged queueing is enabled. Write performance
383 * steadily drops off with more and more concurrent
384 * transactions. Best sequential write performance with
385 * tagged queueing turned off and write caching turned on.
388 * Submitted by: Hideaki Okada <hokada@isl.melco.co.jp>
389 * Drive: DCAS-34330 w/ "S65A" firmware.
391 * The drive with the problem had the "S65A" firmware
392 * revision, and has also been reported (by Stephen J.
393 * Roznowski <sjr@home.net>) for a drive with the "S61A"
396 * Although no one has reported problems with the 2 gig
397 * version of the DCAS drive, the assumption is that it
398 * has the same problems as the 4 gig version. Therefore
399 * this quirk entries disables tagged queueing for all
402 { T_DIRECT
, SIP_MEDIA_FIXED
, "IBM", "DCAS*", "*" },
403 /*quirks*/0, /*mintags*/0, /*maxtags*/0
406 /* Broken tagged queuing drive */
407 { T_DIRECT
, SIP_MEDIA_REMOVABLE
, "iomega", "jaz*", "*" },
408 /*quirks*/0, /*mintags*/0, /*maxtags*/0
411 /* Broken tagged queuing drive */
412 { T_DIRECT
, SIP_MEDIA_FIXED
, "CONNER", "CFP2107*", "*" },
413 /*quirks*/0, /*mintags*/0, /*maxtags*/0
416 /* This does not support other than LUN 0 */
417 { T_DIRECT
, SIP_MEDIA_FIXED
, "VMware*", "*", "*" },
418 CAM_QUIRK_NOLUNS
, /*mintags*/2, /*maxtags*/255
422 * Broken tagged queuing drive.
424 * NAKAJI Hiroyuki <nakaji@zeisei.dpri.kyoto-u.ac.jp>
427 { T_DIRECT
, SIP_MEDIA_FIXED
, samsung
, "WN34324U*", "*" },
428 /*quirks*/0, /*mintags*/0, /*maxtags*/0
432 * Slow when tagged queueing is enabled. (1.5MB/sec versus
434 * Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
435 * Best performance with these drives is achieved with
436 * tagged queueing turned off, and write caching turned on.
438 { T_DIRECT
, SIP_MEDIA_FIXED
, west_digital
, "WDE*", "*" },
439 /*quirks*/0, /*mintags*/0, /*maxtags*/0
443 * Slow when tagged queueing is enabled. (1.5MB/sec versus
445 * Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
446 * Best performance with these drives is achieved with
447 * tagged queueing turned off, and write caching turned on.
449 { T_DIRECT
, SIP_MEDIA_FIXED
, west_digital
, "ENTERPRISE", "*" },
450 /*quirks*/0, /*mintags*/0, /*maxtags*/0
454 * Doesn't handle queue full condition correctly,
455 * so we need to limit maxtags to what the device
456 * can handle instead of determining this automatically.
458 { T_DIRECT
, SIP_MEDIA_FIXED
, samsung
, "WN321010S*", "*" },
459 /*quirks*/0, /*mintags*/2, /*maxtags*/32
462 /* Really only one LUN */
463 { T_ENCLOSURE
, SIP_MEDIA_FIXED
, "SUN", "SENA", "*" },
464 CAM_QUIRK_NOLUNS
, /*mintags*/0, /*maxtags*/0
467 /* I can't believe we need a quirk for DPT volumes. */
468 { T_ANY
, SIP_MEDIA_FIXED
|SIP_MEDIA_REMOVABLE
, "DPT", "*", "*" },
470 /*mintags*/0, /*maxtags*/255
474 * Many Sony CDROM drives don't like multi-LUN probing.
476 { T_CDROM
, SIP_MEDIA_REMOVABLE
, sony
, "CD-ROM CDU*", "*" },
477 CAM_QUIRK_NOLUNS
, /*mintags*/0, /*maxtags*/0
481 * This drive doesn't like multiple LUN probing.
482 * Submitted by: Parag Patel <parag@cgt.com>
484 { T_WORM
, SIP_MEDIA_REMOVABLE
, sony
, "CD-R CDU9*", "*" },
485 CAM_QUIRK_NOLUNS
, /*mintags*/0, /*maxtags*/0
488 { T_WORM
, SIP_MEDIA_REMOVABLE
, "YAMAHA", "CDR100*", "*" },
489 CAM_QUIRK_NOLUNS
, /*mintags*/0, /*maxtags*/0
493 * The 8200 doesn't like multi-lun probing, and probably
494 * don't like serial number requests either.
497 T_SEQUENTIAL
, SIP_MEDIA_REMOVABLE
, "EXABYTE",
500 CAM_QUIRK_NOLUNS
, /*mintags*/0, /*maxtags*/0
504 * Let's try the same as above, but for a drive that says
505 * it's an IPL-6860 but is actually an EXB 8200.
508 T_SEQUENTIAL
, SIP_MEDIA_REMOVABLE
, "EXABYTE",
511 CAM_QUIRK_NOLUNS
, /*mintags*/0, /*maxtags*/0
515 * These Hitachi drives don't like multi-lun probing.
516 * The PR submitter has a DK319H, but says that the Linux
517 * kernel has a similar work-around for the DK312 and DK314,
518 * so all DK31* drives are quirked here.
520 * Submitted by: Paul Haddad <paul@pth.com>
522 { T_DIRECT
, SIP_MEDIA_FIXED
, "HITACHI", "DK31*", "*" },
523 CAM_QUIRK_NOLUNS
, /*mintags*/2, /*maxtags*/255
527 * The Hitachi CJ series with J8A8 firmware apparantly has
528 * problems with tagged commands.
530 * Reported by: amagai@nue.org
532 { T_DIRECT
, SIP_MEDIA_FIXED
, "HITACHI", "DK32CJ*", "J8A8" },
533 CAM_QUIRK_NOLUNS
, /*mintags*/0, /*maxtags*/0
537 * These are the large storage arrays.
538 * Submitted by: William Carrel <william.carrel@infospace.com>
540 { T_DIRECT
, SIP_MEDIA_FIXED
, "HITACHI", "OPEN*", "*" },
541 CAM_QUIRK_HILUNS
, 2, 1024
545 * This old revision of the TDC3600 is also SCSI-1, and
546 * hangs upon serial number probing.
549 T_SEQUENTIAL
, SIP_MEDIA_REMOVABLE
, "TANDBERG",
552 CAM_QUIRK_NOSERIAL
, /*mintags*/0, /*maxtags*/0
556 * Would repond to all LUNs if asked for.
559 T_SEQUENTIAL
, SIP_MEDIA_REMOVABLE
, "CALIPER",
562 CAM_QUIRK_NOLUNS
, /*mintags*/0, /*maxtags*/0
566 * Would repond to all LUNs if asked for.
569 T_SEQUENTIAL
, SIP_MEDIA_REMOVABLE
, "KENNEDY",
572 CAM_QUIRK_NOLUNS
, /*mintags*/0, /*maxtags*/0
575 /* Submitted by: Matthew Dodd <winter@jurai.net> */
576 { T_PROCESSOR
, SIP_MEDIA_FIXED
, "Cabletrn", "EA41*", "*" },
577 CAM_QUIRK_NOLUNS
, /*mintags*/0, /*maxtags*/0
580 /* Submitted by: Matthew Dodd <winter@jurai.net> */
581 { T_PROCESSOR
, SIP_MEDIA_FIXED
, "CABLETRN", "EA41*", "*" },
582 CAM_QUIRK_NOLUNS
, /*mintags*/0, /*maxtags*/0
585 /* TeraSolutions special settings for TRC-22 RAID */
586 { T_DIRECT
, SIP_MEDIA_FIXED
, "TERASOLU", "TRC-22", "*" },
587 /*quirks*/0, /*mintags*/55, /*maxtags*/255
590 /* Veritas Storage Appliance */
591 { T_DIRECT
, SIP_MEDIA_FIXED
, "VERITAS", "*", "*" },
592 CAM_QUIRK_HILUNS
, /*mintags*/2, /*maxtags*/1024
596 * Would respond to all LUNs. Device type and removable
597 * flag are jumper-selectable.
599 { T_ANY
, SIP_MEDIA_REMOVABLE
|SIP_MEDIA_FIXED
, "MaxOptix",
602 CAM_QUIRK_NOLUNS
, /*mintags*/0, /*maxtags*/0
605 /* EasyRAID E5A aka. areca ARC-6010 */
606 { T_DIRECT
, SIP_MEDIA_FIXED
, "easyRAID", "*", "*" },
607 CAM_QUIRK_NOHILUNS
, /*mintags*/2, /*maxtags*/255
610 { T_ENCLOSURE
, SIP_MEDIA_FIXED
, "DP", "BACKPLANE", "*" },
611 CAM_QUIRK_NOLUNS
, /*mintags*/0, /*maxtags*/0
614 /* Default tagged queuing parameters for all devices */
616 T_ANY
, SIP_MEDIA_REMOVABLE
|SIP_MEDIA_FIXED
,
617 /*vendor*/"*", /*product*/"*", /*revision*/"*"
619 /*quirks*/0, /*mintags*/2, /*maxtags*/255
623 static const int xpt_quirk_table_size
= NELEM(xpt_quirk_table
);
627 DM_RET_FLAG_MASK
= 0x0f,
630 DM_RET_DESCEND
= 0x20,
632 DM_RET_ACTION_MASK
= 0xf0
640 } xpt_traverse_depth
;
642 struct xpt_traverse_config
{
643 xpt_traverse_depth depth
;
648 typedef int xpt_busfunc_t (struct cam_eb
*bus
, void *arg
);
649 typedef int xpt_targetfunc_t (struct cam_et
*target
, void *arg
);
650 typedef int xpt_devicefunc_t (struct cam_ed
*device
, void *arg
);
651 typedef int xpt_periphfunc_t (struct cam_periph
*periph
, void *arg
);
652 typedef int xpt_pdrvfunc_t (struct periph_driver
**pdrv
, void *arg
);
654 /* Transport layer configuration information */
655 static struct xpt_softc xsoftc
;
657 /* Queues for our software interrupt handler */
658 typedef TAILQ_HEAD(cam_isrq
, ccb_hdr
) cam_isrq_t
;
659 typedef TAILQ_HEAD(cam_simq
, cam_sim
) cam_simq_t
;
660 static cam_simq_t cam_simq
;
661 static struct spinlock cam_simq_spin
;
663 struct cam_periph
*xpt_periph
;
665 static periph_init_t xpt_periph_init
;
667 static periph_init_t probe_periph_init
;
669 static struct periph_driver xpt_driver
=
671 xpt_periph_init
, "xpt",
672 TAILQ_HEAD_INITIALIZER(xpt_driver
.units
)
675 static struct periph_driver probe_driver
=
677 probe_periph_init
, "probe",
678 TAILQ_HEAD_INITIALIZER(probe_driver
.units
)
681 PERIPHDRIVER_DECLARE(xpt
, xpt_driver
);
682 PERIPHDRIVER_DECLARE(probe
, probe_driver
);
684 static d_open_t xptopen
;
685 static d_close_t xptclose
;
686 static d_ioctl_t xptioctl
;
688 static struct dev_ops xpt_ops
= {
695 static void dead_sim_action(struct cam_sim
*sim
, union ccb
*ccb
);
696 static void dead_sim_poll(struct cam_sim
*sim
);
698 /* Dummy SIM that is used when the real one has gone. */
699 static struct cam_sim cam_dead_sim
;
700 static struct lock cam_dead_lock
;
702 /* Storage for debugging datastructures */
704 struct cam_path
*cam_dpath
;
705 u_int32_t cam_dflags
;
706 u_int32_t cam_debug_delay
;
709 #if defined(CAM_DEBUG_FLAGS) && !defined(CAMDEBUG)
710 #error "You must have options CAMDEBUG to use options CAM_DEBUG_FLAGS"
714 * In order to enable the CAM_DEBUG_* options, the user must have CAMDEBUG
715 * enabled. Also, the user must have either none, or all of CAM_DEBUG_BUS,
716 * CAM_DEBUG_TARGET, and CAM_DEBUG_LUN specified.
718 #if defined(CAM_DEBUG_BUS) || defined(CAM_DEBUG_TARGET) \
719 || defined(CAM_DEBUG_LUN)
721 #if !defined(CAM_DEBUG_BUS) || !defined(CAM_DEBUG_TARGET) \
722 || !defined(CAM_DEBUG_LUN)
723 #error "You must define all or none of CAM_DEBUG_BUS, CAM_DEBUG_TARGET \
725 #endif /* !CAM_DEBUG_BUS || !CAM_DEBUG_TARGET || !CAM_DEBUG_LUN */
726 #else /* !CAMDEBUG */
727 #error "You must use options CAMDEBUG if you use the CAM_DEBUG_* options"
728 #endif /* CAMDEBUG */
729 #endif /* CAM_DEBUG_BUS || CAM_DEBUG_TARGET || CAM_DEBUG_LUN */
731 /* Our boot-time initialization hook */
732 static int cam_module_event_handler(module_t
, int /*modeventtype_t*/, void *);
734 static moduledata_t cam_moduledata
= {
736 cam_module_event_handler
,
740 static int xpt_init(void *);
742 DECLARE_MODULE(cam
, cam_moduledata
, SI_SUB_CONFIGURE
, SI_ORDER_SECOND
);
743 MODULE_VERSION(cam
, 1);
746 static cam_status
xpt_compile_path(struct cam_path
*new_path
,
747 struct cam_periph
*perph
,
749 target_id_t target_id
,
752 static void xpt_release_path(struct cam_path
*path
);
754 static void xpt_async_bcast(struct async_list
*async_head
,
755 u_int32_t async_code
,
756 struct cam_path
*path
,
758 static void xpt_dev_async(u_int32_t async_code
,
760 struct cam_et
*target
,
761 struct cam_ed
*device
,
763 static path_id_t
xptnextfreepathid(void);
764 static path_id_t
xptpathid(const char *sim_name
, int sim_unit
, int sim_bus
);
765 static union ccb
*xpt_get_ccb(struct cam_ed
*device
);
766 static int xpt_schedule_dev(struct camq
*queue
, cam_pinfo
*dev_pinfo
,
767 u_int32_t new_priority
);
768 static void xpt_run_dev_allocq(struct cam_eb
*bus
);
769 static void xpt_run_dev_sendq(struct cam_eb
*bus
);
770 static timeout_t xpt_release_devq_timeout
;
771 static void xpt_release_bus(struct cam_eb
*bus
);
772 static void xpt_release_devq_device(struct cam_ed
*dev
, u_int count
,
774 static struct cam_et
*
775 xpt_alloc_target(struct cam_eb
*bus
, target_id_t target_id
);
776 static void xpt_release_target(struct cam_eb
*bus
, struct cam_et
*target
);
777 static struct cam_ed
*
778 xpt_alloc_device(struct cam_eb
*bus
, struct cam_et
*target
,
780 static void xpt_release_device(struct cam_eb
*bus
, struct cam_et
*target
,
781 struct cam_ed
*device
);
782 static u_int32_t
xpt_dev_ccbq_resize(struct cam_path
*path
, int newopenings
);
783 static struct cam_eb
*
784 xpt_find_bus(path_id_t path_id
);
785 static struct cam_et
*
786 xpt_find_target(struct cam_eb
*bus
, target_id_t target_id
);
787 static struct cam_ed
*
788 xpt_find_device(struct cam_et
*target
, lun_id_t lun_id
);
789 static void xpt_scan_bus(struct cam_periph
*periph
, union ccb
*ccb
);
790 static void xpt_scan_lun(struct cam_periph
*periph
,
791 struct cam_path
*path
, cam_flags flags
,
793 static void xptscandone(struct cam_periph
*periph
, union ccb
*done_ccb
);
794 static xpt_busfunc_t xptconfigbuscountfunc
;
795 static xpt_busfunc_t xptconfigfunc
;
796 static void xpt_config(void *arg
);
797 static xpt_devicefunc_t xptpassannouncefunc
;
798 static void xpt_finishconfig(struct cam_periph
*periph
, union ccb
*ccb
);
799 static void xpt_uncount_bus (struct cam_eb
*bus
);
800 static void xptaction(struct cam_sim
*sim
, union ccb
*work_ccb
);
801 static void xptpoll(struct cam_sim
*sim
);
802 static inthand2_t swi_cambio
;
803 static void camisr(void *);
804 static void camisr_runqueue(struct cam_sim
*);
805 static dev_match_ret
xptbusmatch(struct dev_match_pattern
*patterns
,
806 u_int num_patterns
, struct cam_eb
*bus
);
807 static dev_match_ret
xptdevicematch(struct dev_match_pattern
*patterns
,
809 struct cam_ed
*device
);
810 static dev_match_ret
xptperiphmatch(struct dev_match_pattern
*patterns
,
812 struct cam_periph
*periph
);
813 static xpt_busfunc_t xptedtbusfunc
;
814 static xpt_targetfunc_t xptedttargetfunc
;
815 static xpt_devicefunc_t xptedtdevicefunc
;
816 static xpt_periphfunc_t xptedtperiphfunc
;
817 static xpt_pdrvfunc_t xptplistpdrvfunc
;
818 static xpt_periphfunc_t xptplistperiphfunc
;
819 static int xptedtmatch(struct ccb_dev_match
*cdm
);
820 static int xptperiphlistmatch(struct ccb_dev_match
*cdm
);
821 static int xptbustraverse(struct cam_eb
*start_bus
,
822 xpt_busfunc_t
*tr_func
, void *arg
);
823 static int xpttargettraverse(struct cam_eb
*bus
,
824 struct cam_et
*start_target
,
825 xpt_targetfunc_t
*tr_func
, void *arg
);
826 static int xptdevicetraverse(struct cam_et
*target
,
827 struct cam_ed
*start_device
,
828 xpt_devicefunc_t
*tr_func
, void *arg
);
829 static int xptperiphtraverse(struct cam_ed
*device
,
830 struct cam_periph
*start_periph
,
831 xpt_periphfunc_t
*tr_func
, void *arg
);
832 static int xptpdrvtraverse(struct periph_driver
**start_pdrv
,
833 xpt_pdrvfunc_t
*tr_func
, void *arg
);
834 static int xptpdperiphtraverse(struct periph_driver
**pdrv
,
835 struct cam_periph
*start_periph
,
836 xpt_periphfunc_t
*tr_func
,
838 static xpt_busfunc_t xptdefbusfunc
;
839 static xpt_targetfunc_t xptdeftargetfunc
;
840 static xpt_devicefunc_t xptdefdevicefunc
;
841 static xpt_periphfunc_t xptdefperiphfunc
;
842 static int xpt_for_all_busses(xpt_busfunc_t
*tr_func
, void *arg
);
843 static int xpt_for_all_devices(xpt_devicefunc_t
*tr_func
,
845 static xpt_devicefunc_t xptsetasyncfunc
;
846 static xpt_busfunc_t xptsetasyncbusfunc
;
847 static cam_status
xptregister(struct cam_periph
*periph
,
849 static cam_status
proberegister(struct cam_periph
*periph
,
851 static void probeschedule(struct cam_periph
*probe_periph
);
852 static void probestart(struct cam_periph
*periph
, union ccb
*start_ccb
);
853 static void proberequestdefaultnegotiation(struct cam_periph
*periph
);
854 static int proberequestbackoff(struct cam_periph
*periph
,
855 struct cam_ed
*device
);
856 static void probedone(struct cam_periph
*periph
, union ccb
*done_ccb
);
857 static void probecleanup(struct cam_periph
*periph
);
858 static void xpt_find_quirk(struct cam_ed
*device
);
859 static void xpt_devise_transport(struct cam_path
*path
);
860 static void xpt_set_transfer_settings(struct ccb_trans_settings
*cts
,
861 struct cam_ed
*device
,
863 static void xpt_toggle_tags(struct cam_path
*path
);
864 static void xpt_start_tags(struct cam_path
*path
);
865 static __inline
int xpt_schedule_dev_allocq(struct cam_eb
*bus
,
867 static __inline
int xpt_schedule_dev_sendq(struct cam_eb
*bus
,
869 static __inline
int periph_is_queued(struct cam_periph
*periph
);
870 static __inline
int device_is_alloc_queued(struct cam_ed
*device
);
871 static __inline
int device_is_send_queued(struct cam_ed
*device
);
872 static __inline
int dev_allocq_is_runnable(struct cam_devq
*devq
);
875 xpt_schedule_dev_allocq(struct cam_eb
*bus
, struct cam_ed
*dev
)
879 if (bus
->sim
->devq
&& dev
->ccbq
.devq_openings
> 0) {
880 if ((dev
->flags
& CAM_DEV_RESIZE_QUEUE_NEEDED
) != 0) {
881 cam_ccbq_resize(&dev
->ccbq
,
882 dev
->ccbq
.dev_openings
883 + dev
->ccbq
.dev_active
);
884 dev
->flags
&= ~CAM_DEV_RESIZE_QUEUE_NEEDED
;
887 * The priority of a device waiting for CCB resources
888 * is that of the the highest priority peripheral driver
891 retval
= xpt_schedule_dev(&bus
->sim
->devq
->alloc_queue
,
892 &dev
->alloc_ccb_entry
.pinfo
,
893 CAMQ_GET_HEAD(&dev
->drvq
)->priority
);
902 xpt_schedule_dev_sendq(struct cam_eb
*bus
, struct cam_ed
*dev
)
906 if (bus
->sim
->devq
&& dev
->ccbq
.dev_openings
> 0) {
908 * The priority of a device waiting for controller
909 * resources is that of the the highest priority CCB
913 xpt_schedule_dev(&bus
->sim
->devq
->send_queue
,
914 &dev
->send_ccb_entry
.pinfo
,
915 CAMQ_GET_HEAD(&dev
->ccbq
.queue
)->priority
);
923 periph_is_queued(struct cam_periph
*periph
)
925 return (periph
->pinfo
.index
!= CAM_UNQUEUED_INDEX
);
929 device_is_alloc_queued(struct cam_ed
*device
)
931 return (device
->alloc_ccb_entry
.pinfo
.index
!= CAM_UNQUEUED_INDEX
);
935 device_is_send_queued(struct cam_ed
*device
)
937 return (device
->send_ccb_entry
.pinfo
.index
!= CAM_UNQUEUED_INDEX
);
941 dev_allocq_is_runnable(struct cam_devq
*devq
)
945 * Have space to do more work.
946 * Allowed to do work.
948 return ((devq
->alloc_queue
.qfrozen_cnt
== 0)
949 && (devq
->alloc_queue
.entries
> 0)
950 && (devq
->alloc_openings
> 0));
954 xpt_periph_init(void)
956 make_dev(&xpt_ops
, 0, UID_ROOT
, GID_OPERATOR
, 0600, "xpt0");
960 probe_periph_init(void)
966 xptdone(struct cam_periph
*periph
, union ccb
*done_ccb
)
968 /* Caller will release the CCB */
969 wakeup(&done_ccb
->ccb_h
.cbfcnp
);
973 xptopen(struct dev_open_args
*ap
)
975 cdev_t dev
= ap
->a_head
.a_dev
;
978 * Only allow read-write access.
980 if (((ap
->a_oflags
& FWRITE
) == 0) || ((ap
->a_oflags
& FREAD
) == 0))
984 * We don't allow nonblocking access.
986 if ((ap
->a_oflags
& O_NONBLOCK
) != 0) {
987 kprintf("%s: can't do nonblocking access\n", devtoname(dev
));
991 /* Mark ourselves open */
992 lockmgr(&xsoftc
.xpt_lock
, LK_EXCLUSIVE
);
993 xsoftc
.flags
|= XPT_FLAG_OPEN
;
994 lockmgr(&xsoftc
.xpt_lock
, LK_RELEASE
);
1000 xptclose(struct dev_close_args
*ap
)
1003 /* Mark ourselves closed */
1004 lockmgr(&xsoftc
.xpt_lock
, LK_EXCLUSIVE
);
1005 xsoftc
.flags
&= ~XPT_FLAG_OPEN
;
1006 lockmgr(&xsoftc
.xpt_lock
, LK_RELEASE
);
1012 * Don't automatically grab the xpt softc lock here even though this is going
1013 * through the xpt device. The xpt device is really just a back door for
1014 * accessing other devices and SIMs, so the right thing to do is to grab
1015 * the appropriate SIM lock once the bus/SIM is located.
1018 xptioctl(struct dev_ioctl_args
*ap
)
1026 * For the transport layer CAMIOCOMMAND ioctl, we really only want
1027 * to accept CCB types that don't quite make sense to send through a
1028 * passthrough driver.
1030 case CAMIOCOMMAND
: {
1035 inccb
= (union ccb
*)ap
->a_data
;
1037 bus
= xpt_find_bus(inccb
->ccb_h
.path_id
);
1043 switch(inccb
->ccb_h
.func_code
) {
1046 if ((inccb
->ccb_h
.target_id
!= CAM_TARGET_WILDCARD
)
1047 || (inccb
->ccb_h
.target_lun
!= CAM_LUN_WILDCARD
)) {
1056 ccb
= xpt_alloc_ccb();
1058 CAM_SIM_LOCK(bus
->sim
);
1061 * Create a path using the bus, target, and lun the
1064 if (xpt_create_path(&ccb
->ccb_h
.path
, xpt_periph
,
1065 inccb
->ccb_h
.path_id
,
1066 inccb
->ccb_h
.target_id
,
1067 inccb
->ccb_h
.target_lun
) !=
1070 CAM_SIM_UNLOCK(bus
->sim
);
1074 /* Ensure all of our fields are correct */
1075 xpt_setup_ccb(&ccb
->ccb_h
, ccb
->ccb_h
.path
,
1076 inccb
->ccb_h
.pinfo
.priority
);
1077 xpt_merge_ccb(ccb
, inccb
);
1078 ccb
->ccb_h
.cbfcnp
= xptdone
;
1079 cam_periph_runccb(ccb
, NULL
, 0, 0, NULL
);
1080 bcopy(ccb
, inccb
, sizeof(union ccb
));
1081 xpt_free_path(ccb
->ccb_h
.path
);
1083 CAM_SIM_UNLOCK(bus
->sim
);
1090 * This is an immediate CCB, so it's okay to
1091 * allocate it on the stack.
1094 CAM_SIM_LOCK(bus
->sim
);
1097 * Create a path using the bus, target, and lun the
1100 if (xpt_create_path(&ccb
.ccb_h
.path
, xpt_periph
,
1101 inccb
->ccb_h
.path_id
,
1102 inccb
->ccb_h
.target_id
,
1103 inccb
->ccb_h
.target_lun
) !=
1106 CAM_SIM_UNLOCK(bus
->sim
);
1109 /* Ensure all of our fields are correct */
1110 xpt_setup_ccb(&ccb
.ccb_h
, ccb
.ccb_h
.path
,
1111 inccb
->ccb_h
.pinfo
.priority
);
1112 xpt_merge_ccb(&ccb
, inccb
);
1113 ccb
.ccb_h
.cbfcnp
= xptdone
;
1115 CAM_SIM_UNLOCK(bus
->sim
);
1116 bcopy(&ccb
, inccb
, sizeof(union ccb
));
1117 xpt_free_path(ccb
.ccb_h
.path
);
1121 case XPT_DEV_MATCH
: {
1122 struct cam_periph_map_info mapinfo
;
1123 struct cam_path
*old_path
;
1126 * We can't deal with physical addresses for this
1127 * type of transaction.
1129 if (inccb
->ccb_h
.flags
& CAM_DATA_PHYS
) {
1135 * Save this in case the caller had it set to
1136 * something in particular.
1138 old_path
= inccb
->ccb_h
.path
;
1141 * We really don't need a path for the matching
1142 * code. The path is needed because of the
1143 * debugging statements in xpt_action(). They
1144 * assume that the CCB has a valid path.
1146 inccb
->ccb_h
.path
= xpt_periph
->path
;
1148 bzero(&mapinfo
, sizeof(mapinfo
));
1151 * Map the pattern and match buffers into kernel
1152 * virtual address space.
1154 error
= cam_periph_mapmem(inccb
, &mapinfo
);
1157 inccb
->ccb_h
.path
= old_path
;
1162 * This is an immediate CCB, we can send it on directly.
1167 * Map the buffers back into user space.
1169 cam_periph_unmapmem(inccb
, &mapinfo
);
1171 inccb
->ccb_h
.path
= old_path
;
1180 xpt_release_bus(bus
);
1184 * This is the getpassthru ioctl. It takes a XPT_GDEVLIST ccb as input,
1185 * with the periphal driver name and unit name filled in. The other
1186 * fields don't really matter as input. The passthrough driver name
1187 * ("pass"), and unit number are passed back in the ccb. The current
1188 * device generation number, and the index into the device peripheral
1189 * driver list, and the status are also passed back. Note that
1190 * since we do everything in one pass, unlike the XPT_GDEVLIST ccb,
1191 * we never return a status of CAM_GDEVLIST_LIST_CHANGED. It is
1192 * (or rather should be) impossible for the device peripheral driver
1193 * list to change since we look at the whole thing in one pass, and
1194 * we do it with lock protection.
1197 case CAMGETPASSTHRU
: {
1199 struct cam_periph
*periph
;
1200 struct periph_driver
**p_drv
;
1203 u_int cur_generation
;
1204 int base_periph_found
;
1207 ccb
= (union ccb
*)ap
->a_data
;
1208 unit
= ccb
->cgdl
.unit_number
;
1209 name
= ccb
->cgdl
.periph_name
;
1211 * Every 100 devices, we want to drop our lock protection to
1212 * give the software interrupt handler a chance to run.
1213 * Most systems won't run into this check, but this should
1214 * avoid starvation in the software interrupt handler in
1219 ccb
= (union ccb
*)ap
->a_data
;
1221 base_periph_found
= 0;
1224 * Sanity check -- make sure we don't get a null peripheral
1227 if (*ccb
->cgdl
.periph_name
== '\0') {
1232 /* Keep the list from changing while we traverse it */
1233 lockmgr(&xsoftc
.xpt_topo_lock
, LK_EXCLUSIVE
);
1235 cur_generation
= xsoftc
.xpt_generation
;
1237 /* first find our driver in the list of drivers */
1238 for (p_drv
= periph_drivers
; *p_drv
!= NULL
; p_drv
++) {
1239 if (strcmp((*p_drv
)->driver_name
, name
) == 0)
1243 if (*p_drv
== NULL
) {
1244 lockmgr(&xsoftc
.xpt_topo_lock
, LK_RELEASE
);
1245 ccb
->ccb_h
.status
= CAM_REQ_CMP_ERR
;
1246 ccb
->cgdl
.status
= CAM_GDEVLIST_ERROR
;
1247 *ccb
->cgdl
.periph_name
= '\0';
1248 ccb
->cgdl
.unit_number
= 0;
1254 * Run through every peripheral instance of this driver
1255 * and check to see whether it matches the unit passed
1256 * in by the user. If it does, get out of the loops and
1257 * find the passthrough driver associated with that
1258 * peripheral driver.
1260 TAILQ_FOREACH(periph
, &(*p_drv
)->units
, unit_links
) {
1262 if (periph
->unit_number
== unit
) {
1264 } else if (--splbreaknum
== 0) {
1265 lockmgr(&xsoftc
.xpt_topo_lock
, LK_RELEASE
);
1266 lockmgr(&xsoftc
.xpt_topo_lock
, LK_EXCLUSIVE
);
1268 if (cur_generation
!= xsoftc
.xpt_generation
)
1273 * If we found the peripheral driver that the user passed
1274 * in, go through all of the peripheral drivers for that
1275 * particular device and look for a passthrough driver.
1277 if (periph
!= NULL
) {
1278 struct cam_ed
*device
;
1281 base_periph_found
= 1;
1282 device
= periph
->path
->device
;
1283 for (i
= 0, periph
= SLIST_FIRST(&device
->periphs
);
1285 periph
= SLIST_NEXT(periph
, periph_links
), i
++) {
1287 * Check to see whether we have a
1288 * passthrough device or not.
1290 if (strcmp(periph
->periph_name
, "pass") == 0) {
1292 * Fill in the getdevlist fields.
1294 strcpy(ccb
->cgdl
.periph_name
,
1295 periph
->periph_name
);
1296 ccb
->cgdl
.unit_number
=
1297 periph
->unit_number
;
1298 if (SLIST_NEXT(periph
, periph_links
))
1300 CAM_GDEVLIST_MORE_DEVS
;
1303 CAM_GDEVLIST_LAST_DEVICE
;
1304 ccb
->cgdl
.generation
=
1306 ccb
->cgdl
.index
= i
;
1308 * Fill in some CCB header fields
1309 * that the user may want.
1311 ccb
->ccb_h
.path_id
=
1312 periph
->path
->bus
->path_id
;
1313 ccb
->ccb_h
.target_id
=
1314 periph
->path
->target
->target_id
;
1315 ccb
->ccb_h
.target_lun
=
1316 periph
->path
->device
->lun_id
;
1317 ccb
->ccb_h
.status
= CAM_REQ_CMP
;
1324 * If the periph is null here, one of two things has
1325 * happened. The first possibility is that we couldn't
1326 * find the unit number of the particular peripheral driver
1327 * that the user is asking about. e.g. the user asks for
1328 * the passthrough driver for "da11". We find the list of
1329 * "da" peripherals all right, but there is no unit 11.
1330 * The other possibility is that we went through the list
1331 * of peripheral drivers attached to the device structure,
1332 * but didn't find one with the name "pass". Either way,
1333 * we return ENOENT, since we couldn't find something.
1335 if (periph
== NULL
) {
1336 ccb
->ccb_h
.status
= CAM_REQ_CMP_ERR
;
1337 ccb
->cgdl
.status
= CAM_GDEVLIST_ERROR
;
1338 *ccb
->cgdl
.periph_name
= '\0';
1339 ccb
->cgdl
.unit_number
= 0;
1342 * It is unfortunate that this is even necessary,
1343 * but there are many, many clueless users out there.
1344 * If this is true, the user is looking for the
1345 * passthrough driver, but doesn't have one in his
1348 if (base_periph_found
== 1) {
1349 kprintf("xptioctl: pass driver is not in the "
1351 kprintf("xptioctl: put \"device pass\" in "
1352 "your kernel config file\n");
1355 lockmgr(&xsoftc
.xpt_topo_lock
, LK_RELEASE
);
1367 cam_module_event_handler(module_t mod
, int what
, void *arg
)
1373 if ((error
= xpt_init(NULL
)) != 0)
1386 * Thread to handle asynchronous main-context requests.
1388 * This function is typically used by drivers to perform complex actions
1389 * such as bus scans and engineering requests in a main context instead
1390 * of an interrupt context.
1393 xpt_scanner_thread(void *dummy
)
1396 struct cam_sim
*sim
;
1402 xsoftc
.ccb_scanq_running
= 1;
1403 while ((ccb
= (void *)TAILQ_FIRST(&xsoftc
.ccb_scanq
)) != NULL
) {
1404 TAILQ_REMOVE(&xsoftc
.ccb_scanq
, &ccb
->ccb_h
,
1408 sim
= ccb
->ccb_h
.path
->bus
->sim
;
1411 CAM_SIM_UNLOCK(sim
);
1415 xsoftc
.ccb_scanq_running
= 0;
1416 tsleep_interlock(&xsoftc
.ccb_scanq
, 0);
1418 tsleep(&xsoftc
.ccb_scanq
, PINTERLOCKED
, "ccb_scanq", 0);
1421 rel_mplock(); /* not reached */
1425 * Issue an asynchronous asction
1428 xpt_action_async(union ccb
*ccb
)
1431 TAILQ_INSERT_TAIL(&xsoftc
.ccb_scanq
, &ccb
->ccb_h
, sim_links
.tqe
);
1432 if (xsoftc
.ccb_scanq_running
== 0) {
1433 xsoftc
.ccb_scanq_running
= 1;
1434 wakeup(&xsoftc
.ccb_scanq
);
1440 /* Functions accessed by the peripheral drivers */
1442 xpt_init(void *dummy
)
1444 struct cam_sim
*xpt_sim
;
1445 struct cam_path
*path
;
1446 struct cam_devq
*devq
;
1449 TAILQ_INIT(&xsoftc
.xpt_busses
);
1450 TAILQ_INIT(&cam_simq
);
1451 TAILQ_INIT(&xsoftc
.ccb_scanq
);
1452 STAILQ_INIT(&xsoftc
.highpowerq
);
1453 xsoftc
.num_highpower
= CAM_MAX_HIGHPOWER
;
1455 spin_init(&cam_simq_spin
, "cam_simq_spin");
1456 lockinit(&xsoftc
.xpt_lock
, "XPT lock", 0, LK_CANRECURSE
);
1457 lockinit(&xsoftc
.xpt_topo_lock
, "XPT topology lock", 0, LK_CANRECURSE
);
1459 SLIST_INIT(&cam_dead_sim
.ccb_freeq
);
1460 TAILQ_INIT(&cam_dead_sim
.sim_doneq
);
1461 spin_init(&cam_dead_sim
.sim_spin
, "cam_dead_sim");
1462 cam_dead_sim
.sim_action
= dead_sim_action
;
1463 cam_dead_sim
.sim_poll
= dead_sim_poll
;
1464 cam_dead_sim
.sim_name
= "dead_sim";
1465 cam_dead_sim
.lock
= &cam_dead_lock
;
1466 lockinit(&cam_dead_lock
, "XPT dead_sim lock", 0, LK_CANRECURSE
);
1467 cam_dead_sim
.flags
|= CAM_SIM_DEREGISTERED
;
1470 * The xpt layer is, itself, the equivelent of a SIM.
1471 * Allow 16 ccbs in the ccb pool for it. This should
1472 * give decent parallelism when we probe busses and
1473 * perform other XPT functions.
1475 devq
= cam_simq_alloc(16);
1476 xpt_sim
= cam_sim_alloc(xptaction
,
1481 /*lock*/&xsoftc
.xpt_lock
,
1482 /*max_dev_transactions*/0,
1483 /*max_tagged_dev_transactions*/0,
1485 cam_simq_release(devq
);
1486 if (xpt_sim
== NULL
)
1489 xpt_sim
->max_ccbs
= 16;
1491 lockmgr(&xsoftc
.xpt_lock
, LK_EXCLUSIVE
);
1492 if ((status
= xpt_bus_register(xpt_sim
, /*bus #*/0)) != CAM_SUCCESS
) {
1493 lockmgr(&xsoftc
.xpt_lock
, LK_RELEASE
);
1494 kprintf("xpt_init: xpt_bus_register failed with status %#x,"
1495 " failing attach\n", status
);
1500 * Looking at the XPT from the SIM layer, the XPT is
1501 * the equivelent of a peripheral driver. Allocate
1502 * a peripheral driver entry for us.
1504 if ((status
= xpt_create_path(&path
, NULL
, CAM_XPT_PATH_ID
,
1505 CAM_TARGET_WILDCARD
,
1506 CAM_LUN_WILDCARD
)) != CAM_REQ_CMP
) {
1507 lockmgr(&xsoftc
.xpt_lock
, LK_RELEASE
);
1508 kprintf("xpt_init: xpt_create_path failed with status %#x,"
1509 " failing attach\n", status
);
1513 cam_periph_alloc(xptregister
, NULL
, NULL
, NULL
, "xpt", CAM_PERIPH_BIO
,
1514 path
, NULL
, 0, xpt_sim
);
1515 xpt_free_path(path
);
1517 lockmgr(&xsoftc
.xpt_lock
, LK_RELEASE
);
1520 * Register a callback for when interrupts are enabled.
1522 xsoftc
.xpt_config_hook
= kmalloc(sizeof(struct intr_config_hook
),
1523 M_CAMXPT
, M_INTWAIT
| M_ZERO
);
1524 xsoftc
.xpt_config_hook
->ich_func
= xpt_config
;
1525 xsoftc
.xpt_config_hook
->ich_desc
= "xpt";
1526 xsoftc
.xpt_config_hook
->ich_order
= 1000;
1527 if (config_intrhook_establish(xsoftc
.xpt_config_hook
) != 0) {
1528 kfree (xsoftc
.xpt_config_hook
, M_CAMXPT
);
1529 kprintf("xpt_init: config_intrhook_establish failed "
1530 "- failing attach\n");
1533 /* fire up rescan thread */
1534 if (kthread_create(xpt_scanner_thread
, NULL
, NULL
, "xpt_thrd")) {
1535 kprintf("xpt_init: failed to create rescan thread\n");
1537 /* Install our software interrupt handlers */
1538 register_swi_mp(SWI_CAMBIO
, swi_cambio
, NULL
, "swi_cambio", NULL
, -1);
1544 xptregister(struct cam_periph
*periph
, void *arg
)
1546 struct cam_sim
*xpt_sim
;
1548 if (periph
== NULL
) {
1549 kprintf("xptregister: periph was NULL!!\n");
1550 return(CAM_REQ_CMP_ERR
);
1553 xpt_sim
= (struct cam_sim
*)arg
;
1554 xpt_sim
->softc
= periph
;
1555 xpt_periph
= periph
;
1556 periph
->softc
= NULL
;
1558 return(CAM_REQ_CMP
);
1562 xpt_add_periph(struct cam_periph
*periph
)
1564 struct cam_ed
*device
;
1566 struct periph_list
*periph_head
;
1568 sim_lock_assert_owned(periph
->sim
->lock
);
1570 device
= periph
->path
->device
;
1572 periph_head
= &device
->periphs
;
1574 status
= CAM_REQ_CMP
;
1576 if (device
!= NULL
) {
1578 * Make room for this peripheral
1579 * so it will fit in the queue
1580 * when it's scheduled to run
1582 status
= camq_resize(&device
->drvq
,
1583 device
->drvq
.array_size
+ 1);
1585 device
->generation
++;
1587 SLIST_INSERT_HEAD(periph_head
, periph
, periph_links
);
1590 lockmgr(&xsoftc
.xpt_topo_lock
, LK_EXCLUSIVE
);
1591 xsoftc
.xpt_generation
++;
1592 lockmgr(&xsoftc
.xpt_topo_lock
, LK_RELEASE
);
1598 xpt_remove_periph(struct cam_periph
*periph
)
1600 struct cam_ed
*device
;
1602 sim_lock_assert_owned(periph
->sim
->lock
);
1604 device
= periph
->path
->device
;
1606 if (device
!= NULL
) {
1607 struct periph_list
*periph_head
;
1609 periph_head
= &device
->periphs
;
1611 /* Release the slot for this peripheral */
1612 camq_resize(&device
->drvq
, device
->drvq
.array_size
- 1);
1614 device
->generation
++;
1616 SLIST_REMOVE(periph_head
, periph
, cam_periph
, periph_links
);
1619 lockmgr(&xsoftc
.xpt_topo_lock
, LK_EXCLUSIVE
);
1620 xsoftc
.xpt_generation
++;
1621 lockmgr(&xsoftc
.xpt_topo_lock
, LK_RELEASE
);
1625 xpt_announce_periph(struct cam_periph
*periph
, char *announce_string
)
1627 struct ccb_pathinq cpi
;
1628 struct ccb_trans_settings cts
;
1629 struct cam_path
*path
;
1634 sim_lock_assert_owned(periph
->sim
->lock
);
1636 path
= periph
->path
;
1638 /* Report basic attachment and inquiry data */
1639 kprintf("%s%d at %s%d bus %d target %d lun %d\n",
1640 periph
->periph_name
, periph
->unit_number
,
1641 path
->bus
->sim
->sim_name
,
1642 path
->bus
->sim
->unit_number
,
1643 path
->bus
->sim
->bus_id
,
1644 path
->target
->target_id
,
1645 path
->device
->lun_id
);
1646 kprintf("%s%d: ", periph
->periph_name
, periph
->unit_number
);
1647 scsi_print_inquiry(&path
->device
->inq_data
);
1649 /* Report serial number */
1650 if (path
->device
->serial_num_len
> 0) {
1651 /* Don't wrap the screen - print only the first 60 chars */
1652 kprintf("%s%d: Serial Number %.60s\n", periph
->periph_name
,
1653 periph
->unit_number
, path
->device
->serial_num
);
1656 /* Acquire and report transfer speed */
1657 xpt_setup_ccb(&cts
.ccb_h
, path
, /*priority*/1);
1658 cts
.ccb_h
.func_code
= XPT_GET_TRAN_SETTINGS
;
1659 cts
.type
= CTS_TYPE_CURRENT_SETTINGS
;
1660 xpt_action((union ccb
*)&cts
);
1661 if ((cts
.ccb_h
.status
& CAM_STATUS_MASK
) != CAM_REQ_CMP
) {
1665 /* Ask the SIM for its base transfer speed */
1666 xpt_setup_ccb(&cpi
.ccb_h
, path
, /*priority*/1);
1667 cpi
.ccb_h
.func_code
= XPT_PATH_INQ
;
1668 xpt_action((union ccb
*)&cpi
);
1670 speed
= cpi
.base_transfer_speed
;
1672 if (cts
.ccb_h
.status
== CAM_REQ_CMP
&& cts
.transport
== XPORT_SPI
) {
1673 struct ccb_trans_settings_spi
*spi
;
1675 spi
= &cts
.xport_specific
.spi
;
1676 if ((spi
->valid
& CTS_SPI_VALID_SYNC_OFFSET
) != 0
1677 && spi
->sync_offset
!= 0) {
1678 freq
= scsi_calc_syncsrate(spi
->sync_period
);
1682 if ((spi
->valid
& CTS_SPI_VALID_BUS_WIDTH
) != 0)
1683 speed
*= (0x01 << spi
->bus_width
);
1685 if (cts
.ccb_h
.status
== CAM_REQ_CMP
&& cts
.transport
== XPORT_FC
) {
1686 struct ccb_trans_settings_fc
*fc
= &cts
.xport_specific
.fc
;
1687 if (fc
->valid
& CTS_FC_VALID_SPEED
) {
1688 speed
= fc
->bitrate
;
1692 if (cts
.ccb_h
.status
== CAM_REQ_CMP
&& cts
.transport
== XPORT_SAS
) {
1693 struct ccb_trans_settings_sas
*sas
= &cts
.xport_specific
.sas
;
1694 if (sas
->valid
& CTS_SAS_VALID_SPEED
) {
1695 speed
= sas
->bitrate
;
1701 kprintf("%s%d: %d.%03dMB/s transfers",
1702 periph
->periph_name
, periph
->unit_number
,
1705 kprintf("%s%d: %dKB/s transfers", periph
->periph_name
,
1706 periph
->unit_number
, speed
);
1708 /* Report additional information about SPI connections */
1709 if (cts
.ccb_h
.status
== CAM_REQ_CMP
&& cts
.transport
== XPORT_SPI
) {
1710 struct ccb_trans_settings_spi
*spi
;
1712 spi
= &cts
.xport_specific
.spi
;
1714 kprintf(" (%d.%03dMHz%s, offset %d", freq
/ 1000,
1716 (spi
->ppr_options
& MSG_EXT_PPR_DT_REQ
) != 0
1720 if ((spi
->valid
& CTS_SPI_VALID_BUS_WIDTH
) != 0
1721 && spi
->bus_width
> 0) {
1727 kprintf("%dbit)", 8 * (0x01 << spi
->bus_width
));
1728 } else if (freq
!= 0) {
1732 if (cts
.ccb_h
.status
== CAM_REQ_CMP
&& cts
.transport
== XPORT_FC
) {
1733 struct ccb_trans_settings_fc
*fc
;
1735 fc
= &cts
.xport_specific
.fc
;
1736 if (fc
->valid
& CTS_FC_VALID_WWNN
)
1737 kprintf(" WWNN 0x%llx", (long long) fc
->wwnn
);
1738 if (fc
->valid
& CTS_FC_VALID_WWPN
)
1739 kprintf(" WWPN 0x%llx", (long long) fc
->wwpn
);
1740 if (fc
->valid
& CTS_FC_VALID_PORT
)
1741 kprintf(" PortID 0x%x", fc
->port
);
1744 if (path
->device
->inq_flags
& SID_CmdQue
1745 || path
->device
->flags
& CAM_DEV_TAG_AFTER_COUNT
) {
1746 kprintf("\n%s%d: Command Queueing Enabled",
1747 periph
->periph_name
, periph
->unit_number
);
1752 * We only want to print the caller's announce string if they've
1755 if (announce_string
!= NULL
)
1756 kprintf("%s%d: %s\n", periph
->periph_name
,
1757 periph
->unit_number
, announce_string
);
1760 static dev_match_ret
1761 xptbusmatch(struct dev_match_pattern
*patterns
, u_int num_patterns
,
1764 dev_match_ret retval
;
1767 retval
= DM_RET_NONE
;
1770 * If we aren't given something to match against, that's an error.
1773 return(DM_RET_ERROR
);
1776 * If there are no match entries, then this bus matches no
1779 if ((patterns
== NULL
) || (num_patterns
== 0))
1780 return(DM_RET_DESCEND
| DM_RET_COPY
);
1782 for (i
= 0; i
< num_patterns
; i
++) {
1783 struct bus_match_pattern
*cur_pattern
;
1786 * If the pattern in question isn't for a bus node, we
1787 * aren't interested. However, we do indicate to the
1788 * calling routine that we should continue descending the
1789 * tree, since the user wants to match against lower-level
1792 if (patterns
[i
].type
!= DEV_MATCH_BUS
) {
1793 if ((retval
& DM_RET_ACTION_MASK
) == DM_RET_NONE
)
1794 retval
|= DM_RET_DESCEND
;
1798 cur_pattern
= &patterns
[i
].pattern
.bus_pattern
;
1801 * If they want to match any bus node, we give them any
1804 if (cur_pattern
->flags
== BUS_MATCH_ANY
) {
1805 /* set the copy flag */
1806 retval
|= DM_RET_COPY
;
1809 * If we've already decided on an action, go ahead
1812 if ((retval
& DM_RET_ACTION_MASK
) != DM_RET_NONE
)
1817 * Not sure why someone would do this...
1819 if (cur_pattern
->flags
== BUS_MATCH_NONE
)
1822 if (((cur_pattern
->flags
& BUS_MATCH_PATH
) != 0)
1823 && (cur_pattern
->path_id
!= bus
->path_id
))
1826 if (((cur_pattern
->flags
& BUS_MATCH_BUS_ID
) != 0)
1827 && (cur_pattern
->bus_id
!= bus
->sim
->bus_id
))
1830 if (((cur_pattern
->flags
& BUS_MATCH_UNIT
) != 0)
1831 && (cur_pattern
->unit_number
!= bus
->sim
->unit_number
))
1834 if (((cur_pattern
->flags
& BUS_MATCH_NAME
) != 0)
1835 && (strncmp(cur_pattern
->dev_name
, bus
->sim
->sim_name
,
1840 * If we get to this point, the user definitely wants
1841 * information on this bus. So tell the caller to copy the
1844 retval
|= DM_RET_COPY
;
1847 * If the return action has been set to descend, then we
1848 * know that we've already seen a non-bus matching
1849 * expression, therefore we need to further descend the tree.
1850 * This won't change by continuing around the loop, so we
1851 * go ahead and return. If we haven't seen a non-bus
1852 * matching expression, we keep going around the loop until
1853 * we exhaust the matching expressions. We'll set the stop
1854 * flag once we fall out of the loop.
1856 if ((retval
& DM_RET_ACTION_MASK
) == DM_RET_DESCEND
)
1861 * If the return action hasn't been set to descend yet, that means
1862 * we haven't seen anything other than bus matching patterns. So
1863 * tell the caller to stop descending the tree -- the user doesn't
1864 * want to match against lower level tree elements.
1866 if ((retval
& DM_RET_ACTION_MASK
) == DM_RET_NONE
)
1867 retval
|= DM_RET_STOP
;
1872 static dev_match_ret
1873 xptdevicematch(struct dev_match_pattern
*patterns
, u_int num_patterns
,
1874 struct cam_ed
*device
)
1876 dev_match_ret retval
;
1879 retval
= DM_RET_NONE
;
1882 * If we aren't given something to match against, that's an error.
1885 return(DM_RET_ERROR
);
1888 * If there are no match entries, then this device matches no
1891 if ((patterns
== NULL
) || (num_patterns
== 0))
1892 return(DM_RET_DESCEND
| DM_RET_COPY
);
1894 for (i
= 0; i
< num_patterns
; i
++) {
1895 struct device_match_pattern
*cur_pattern
;
1898 * If the pattern in question isn't for a device node, we
1899 * aren't interested.
1901 if (patterns
[i
].type
!= DEV_MATCH_DEVICE
) {
1902 if ((patterns
[i
].type
== DEV_MATCH_PERIPH
)
1903 && ((retval
& DM_RET_ACTION_MASK
) == DM_RET_NONE
))
1904 retval
|= DM_RET_DESCEND
;
1908 cur_pattern
= &patterns
[i
].pattern
.device_pattern
;
1911 * If they want to match any device node, we give them any
1914 if (cur_pattern
->flags
== DEV_MATCH_ANY
) {
1915 /* set the copy flag */
1916 retval
|= DM_RET_COPY
;
1920 * If we've already decided on an action, go ahead
1923 if ((retval
& DM_RET_ACTION_MASK
) != DM_RET_NONE
)
1928 * Not sure why someone would do this...
1930 if (cur_pattern
->flags
== DEV_MATCH_NONE
)
1933 if (((cur_pattern
->flags
& DEV_MATCH_PATH
) != 0)
1934 && (cur_pattern
->path_id
!= device
->target
->bus
->path_id
))
1937 if (((cur_pattern
->flags
& DEV_MATCH_TARGET
) != 0)
1938 && (cur_pattern
->target_id
!= device
->target
->target_id
))
1941 if (((cur_pattern
->flags
& DEV_MATCH_LUN
) != 0)
1942 && (cur_pattern
->target_lun
!= device
->lun_id
))
1945 if (((cur_pattern
->flags
& DEV_MATCH_INQUIRY
) != 0)
1946 && (cam_quirkmatch((caddr_t
)&device
->inq_data
,
1947 (caddr_t
)&cur_pattern
->inq_pat
,
1948 1, sizeof(cur_pattern
->inq_pat
),
1949 scsi_static_inquiry_match
) == NULL
))
1953 * If we get to this point, the user definitely wants
1954 * information on this device. So tell the caller to copy
1957 retval
|= DM_RET_COPY
;
1960 * If the return action has been set to descend, then we
1961 * know that we've already seen a peripheral matching
1962 * expression, therefore we need to further descend the tree.
1963 * This won't change by continuing around the loop, so we
1964 * go ahead and return. If we haven't seen a peripheral
1965 * matching expression, we keep going around the loop until
1966 * we exhaust the matching expressions. We'll set the stop
1967 * flag once we fall out of the loop.
1969 if ((retval
& DM_RET_ACTION_MASK
) == DM_RET_DESCEND
)
1974 * If the return action hasn't been set to descend yet, that means
1975 * we haven't seen any peripheral matching patterns. So tell the
1976 * caller to stop descending the tree -- the user doesn't want to
1977 * match against lower level tree elements.
1979 if ((retval
& DM_RET_ACTION_MASK
) == DM_RET_NONE
)
1980 retval
|= DM_RET_STOP
;
1986 * Match a single peripheral against any number of match patterns.
1988 static dev_match_ret
1989 xptperiphmatch(struct dev_match_pattern
*patterns
, u_int num_patterns
,
1990 struct cam_periph
*periph
)
1992 dev_match_ret retval
;
1996 * If we aren't given something to match against, that's an error.
1999 return(DM_RET_ERROR
);
2002 * If there are no match entries, then this peripheral matches no
2005 if ((patterns
== NULL
) || (num_patterns
== 0))
2006 return(DM_RET_STOP
| DM_RET_COPY
);
2009 * There aren't any nodes below a peripheral node, so there's no
2010 * reason to descend the tree any further.
2012 retval
= DM_RET_STOP
;
2014 for (i
= 0; i
< num_patterns
; i
++) {
2015 struct periph_match_pattern
*cur_pattern
;
2018 * If the pattern in question isn't for a peripheral, we
2019 * aren't interested.
2021 if (patterns
[i
].type
!= DEV_MATCH_PERIPH
)
2024 cur_pattern
= &patterns
[i
].pattern
.periph_pattern
;
2027 * If they want to match on anything, then we will do so.
2029 if (cur_pattern
->flags
== PERIPH_MATCH_ANY
) {
2030 /* set the copy flag */
2031 retval
|= DM_RET_COPY
;
2034 * We've already set the return action to stop,
2035 * since there are no nodes below peripherals in
2042 * Not sure why someone would do this...
2044 if (cur_pattern
->flags
== PERIPH_MATCH_NONE
)
2047 if (((cur_pattern
->flags
& PERIPH_MATCH_PATH
) != 0)
2048 && (cur_pattern
->path_id
!= periph
->path
->bus
->path_id
))
2052 * For the target and lun id's, we have to make sure the
2053 * target and lun pointers aren't NULL. The xpt peripheral
2054 * has a wildcard target and device.
2056 if (((cur_pattern
->flags
& PERIPH_MATCH_TARGET
) != 0)
2057 && ((periph
->path
->target
== NULL
)
2058 ||(cur_pattern
->target_id
!= periph
->path
->target
->target_id
)))
2061 if (((cur_pattern
->flags
& PERIPH_MATCH_LUN
) != 0)
2062 && ((periph
->path
->device
== NULL
)
2063 || (cur_pattern
->target_lun
!= periph
->path
->device
->lun_id
)))
2066 if (((cur_pattern
->flags
& PERIPH_MATCH_UNIT
) != 0)
2067 && (cur_pattern
->unit_number
!= periph
->unit_number
))
2070 if (((cur_pattern
->flags
& PERIPH_MATCH_NAME
) != 0)
2071 && (strncmp(cur_pattern
->periph_name
, periph
->periph_name
,
2076 * If we get to this point, the user definitely wants
2077 * information on this peripheral. So tell the caller to
2078 * copy the data out.
2080 retval
|= DM_RET_COPY
;
2083 * The return action has already been set to stop, since
2084 * peripherals don't have any nodes below them in the EDT.
2090 * If we get to this point, the peripheral that was passed in
2091 * doesn't match any of the patterns.
2097 xptedtbusfunc(struct cam_eb
*bus
, void *arg
)
2099 struct ccb_dev_match
*cdm
;
2100 dev_match_ret retval
;
2102 cdm
= (struct ccb_dev_match
*)arg
;
2105 * If our position is for something deeper in the tree, that means
2106 * that we've already seen this node. So, we keep going down.
2108 if ((cdm
->pos
.position_type
& CAM_DEV_POS_BUS
)
2109 && (cdm
->pos
.cookie
.bus
== bus
)
2110 && (cdm
->pos
.position_type
& CAM_DEV_POS_TARGET
)
2111 && (cdm
->pos
.cookie
.target
!= NULL
))
2112 retval
= DM_RET_DESCEND
;
2114 retval
= xptbusmatch(cdm
->patterns
, cdm
->num_patterns
, bus
);
2117 * If we got an error, bail out of the search.
2119 if ((retval
& DM_RET_ACTION_MASK
) == DM_RET_ERROR
) {
2120 cdm
->status
= CAM_DEV_MATCH_ERROR
;
2125 * If the copy flag is set, copy this bus out.
2127 if (retval
& DM_RET_COPY
) {
2130 spaceleft
= cdm
->match_buf_len
- (cdm
->num_matches
*
2131 sizeof(struct dev_match_result
));
2134 * If we don't have enough space to put in another
2135 * match result, save our position and tell the
2136 * user there are more devices to check.
2138 if (spaceleft
< sizeof(struct dev_match_result
)) {
2139 bzero(&cdm
->pos
, sizeof(cdm
->pos
));
2140 cdm
->pos
.position_type
=
2141 CAM_DEV_POS_EDT
| CAM_DEV_POS_BUS
;
2143 cdm
->pos
.cookie
.bus
= bus
;
2144 cdm
->pos
.generations
[CAM_BUS_GENERATION
]=
2145 xsoftc
.bus_generation
;
2146 cdm
->status
= CAM_DEV_MATCH_MORE
;
2149 j
= cdm
->num_matches
;
2151 cdm
->matches
[j
].type
= DEV_MATCH_BUS
;
2152 cdm
->matches
[j
].result
.bus_result
.path_id
= bus
->path_id
;
2153 cdm
->matches
[j
].result
.bus_result
.bus_id
= bus
->sim
->bus_id
;
2154 cdm
->matches
[j
].result
.bus_result
.unit_number
=
2155 bus
->sim
->unit_number
;
2156 strncpy(cdm
->matches
[j
].result
.bus_result
.dev_name
,
2157 bus
->sim
->sim_name
, DEV_IDLEN
);
2161 * If the user is only interested in busses, there's no
2162 * reason to descend to the next level in the tree.
2164 if ((retval
& DM_RET_ACTION_MASK
) == DM_RET_STOP
)
2168 * If there is a target generation recorded, check it to
2169 * make sure the target list hasn't changed.
2171 if ((cdm
->pos
.position_type
& CAM_DEV_POS_BUS
)
2172 && (bus
== cdm
->pos
.cookie
.bus
)
2173 && (cdm
->pos
.position_type
& CAM_DEV_POS_TARGET
)
2174 && (cdm
->pos
.generations
[CAM_TARGET_GENERATION
] != 0)
2175 && (cdm
->pos
.generations
[CAM_TARGET_GENERATION
] !=
2177 cdm
->status
= CAM_DEV_MATCH_LIST_CHANGED
;
2181 if ((cdm
->pos
.position_type
& CAM_DEV_POS_BUS
)
2182 && (cdm
->pos
.cookie
.bus
== bus
)
2183 && (cdm
->pos
.position_type
& CAM_DEV_POS_TARGET
)
2184 && (cdm
->pos
.cookie
.target
!= NULL
))
2185 return(xpttargettraverse(bus
,
2186 (struct cam_et
*)cdm
->pos
.cookie
.target
,
2187 xptedttargetfunc
, arg
));
2189 return(xpttargettraverse(bus
, NULL
, xptedttargetfunc
, arg
));
2193 xptedttargetfunc(struct cam_et
*target
, void *arg
)
2195 struct ccb_dev_match
*cdm
;
2197 cdm
= (struct ccb_dev_match
*)arg
;
2200 * If there is a device list generation recorded, check it to
2201 * make sure the device list hasn't changed.
2203 if ((cdm
->pos
.position_type
& CAM_DEV_POS_BUS
)
2204 && (cdm
->pos
.cookie
.bus
== target
->bus
)
2205 && (cdm
->pos
.position_type
& CAM_DEV_POS_TARGET
)
2206 && (cdm
->pos
.cookie
.target
== target
)
2207 && (cdm
->pos
.position_type
& CAM_DEV_POS_DEVICE
)
2208 && (cdm
->pos
.generations
[CAM_DEV_GENERATION
] != 0)
2209 && (cdm
->pos
.generations
[CAM_DEV_GENERATION
] !=
2210 target
->generation
)) {
2211 cdm
->status
= CAM_DEV_MATCH_LIST_CHANGED
;
2215 if ((cdm
->pos
.position_type
& CAM_DEV_POS_BUS
)
2216 && (cdm
->pos
.cookie
.bus
== target
->bus
)
2217 && (cdm
->pos
.position_type
& CAM_DEV_POS_TARGET
)
2218 && (cdm
->pos
.cookie
.target
== target
)
2219 && (cdm
->pos
.position_type
& CAM_DEV_POS_DEVICE
)
2220 && (cdm
->pos
.cookie
.device
!= NULL
))
2221 return(xptdevicetraverse(target
,
2222 (struct cam_ed
*)cdm
->pos
.cookie
.device
,
2223 xptedtdevicefunc
, arg
));
2225 return(xptdevicetraverse(target
, NULL
, xptedtdevicefunc
, arg
));
2229 xptedtdevicefunc(struct cam_ed
*device
, void *arg
)
2232 struct ccb_dev_match
*cdm
;
2233 dev_match_ret retval
;
2235 cdm
= (struct ccb_dev_match
*)arg
;
2238 * If our position is for something deeper in the tree, that means
2239 * that we've already seen this node. So, we keep going down.
2241 if ((cdm
->pos
.position_type
& CAM_DEV_POS_DEVICE
)
2242 && (cdm
->pos
.cookie
.device
== device
)
2243 && (cdm
->pos
.position_type
& CAM_DEV_POS_PERIPH
)
2244 && (cdm
->pos
.cookie
.periph
!= NULL
))
2245 retval
= DM_RET_DESCEND
;
2247 retval
= xptdevicematch(cdm
->patterns
, cdm
->num_patterns
,
2250 if ((retval
& DM_RET_ACTION_MASK
) == DM_RET_ERROR
) {
2251 cdm
->status
= CAM_DEV_MATCH_ERROR
;
2256 * If the copy flag is set, copy this device out.
2258 if (retval
& DM_RET_COPY
) {
2261 spaceleft
= cdm
->match_buf_len
- (cdm
->num_matches
*
2262 sizeof(struct dev_match_result
));
2265 * If we don't have enough space to put in another
2266 * match result, save our position and tell the
2267 * user there are more devices to check.
2269 if (spaceleft
< sizeof(struct dev_match_result
)) {
2270 bzero(&cdm
->pos
, sizeof(cdm
->pos
));
2271 cdm
->pos
.position_type
=
2272 CAM_DEV_POS_EDT
| CAM_DEV_POS_BUS
|
2273 CAM_DEV_POS_TARGET
| CAM_DEV_POS_DEVICE
;
2275 cdm
->pos
.cookie
.bus
= device
->target
->bus
;
2276 cdm
->pos
.generations
[CAM_BUS_GENERATION
]=
2277 xsoftc
.bus_generation
;
2278 cdm
->pos
.cookie
.target
= device
->target
;
2279 cdm
->pos
.generations
[CAM_TARGET_GENERATION
] =
2280 device
->target
->bus
->generation
;
2281 cdm
->pos
.cookie
.device
= device
;
2282 cdm
->pos
.generations
[CAM_DEV_GENERATION
] =
2283 device
->target
->generation
;
2284 cdm
->status
= CAM_DEV_MATCH_MORE
;
2287 j
= cdm
->num_matches
;
2289 cdm
->matches
[j
].type
= DEV_MATCH_DEVICE
;
2290 cdm
->matches
[j
].result
.device_result
.path_id
=
2291 device
->target
->bus
->path_id
;
2292 cdm
->matches
[j
].result
.device_result
.target_id
=
2293 device
->target
->target_id
;
2294 cdm
->matches
[j
].result
.device_result
.target_lun
=
2296 bcopy(&device
->inq_data
,
2297 &cdm
->matches
[j
].result
.device_result
.inq_data
,
2298 sizeof(struct scsi_inquiry_data
));
2300 /* Let the user know whether this device is unconfigured */
2301 if (device
->flags
& CAM_DEV_UNCONFIGURED
)
2302 cdm
->matches
[j
].result
.device_result
.flags
=
2303 DEV_RESULT_UNCONFIGURED
;
2305 cdm
->matches
[j
].result
.device_result
.flags
=
2310 * If the user isn't interested in peripherals, don't descend
2311 * the tree any further.
2313 if ((retval
& DM_RET_ACTION_MASK
) == DM_RET_STOP
)
2317 * If there is a peripheral list generation recorded, make sure
2318 * it hasn't changed.
2320 if ((cdm
->pos
.position_type
& CAM_DEV_POS_BUS
)
2321 && (device
->target
->bus
== cdm
->pos
.cookie
.bus
)
2322 && (cdm
->pos
.position_type
& CAM_DEV_POS_TARGET
)
2323 && (device
->target
== cdm
->pos
.cookie
.target
)
2324 && (cdm
->pos
.position_type
& CAM_DEV_POS_DEVICE
)
2325 && (device
== cdm
->pos
.cookie
.device
)
2326 && (cdm
->pos
.position_type
& CAM_DEV_POS_PERIPH
)
2327 && (cdm
->pos
.generations
[CAM_PERIPH_GENERATION
] != 0)
2328 && (cdm
->pos
.generations
[CAM_PERIPH_GENERATION
] !=
2329 device
->generation
)){
2330 cdm
->status
= CAM_DEV_MATCH_LIST_CHANGED
;
2334 if ((cdm
->pos
.position_type
& CAM_DEV_POS_BUS
)
2335 && (cdm
->pos
.cookie
.bus
== device
->target
->bus
)
2336 && (cdm
->pos
.position_type
& CAM_DEV_POS_TARGET
)
2337 && (cdm
->pos
.cookie
.target
== device
->target
)
2338 && (cdm
->pos
.position_type
& CAM_DEV_POS_DEVICE
)
2339 && (cdm
->pos
.cookie
.device
== device
)
2340 && (cdm
->pos
.position_type
& CAM_DEV_POS_PERIPH
)
2341 && (cdm
->pos
.cookie
.periph
!= NULL
))
2342 return(xptperiphtraverse(device
,
2343 (struct cam_periph
*)cdm
->pos
.cookie
.periph
,
2344 xptedtperiphfunc
, arg
));
2346 return(xptperiphtraverse(device
, NULL
, xptedtperiphfunc
, arg
));
2350 xptedtperiphfunc(struct cam_periph
*periph
, void *arg
)
2352 struct ccb_dev_match
*cdm
;
2353 dev_match_ret retval
;
2355 cdm
= (struct ccb_dev_match
*)arg
;
2357 retval
= xptperiphmatch(cdm
->patterns
, cdm
->num_patterns
, periph
);
2359 if ((retval
& DM_RET_ACTION_MASK
) == DM_RET_ERROR
) {
2360 cdm
->status
= CAM_DEV_MATCH_ERROR
;
2365 * If the copy flag is set, copy this peripheral out.
2367 if (retval
& DM_RET_COPY
) {
2370 spaceleft
= cdm
->match_buf_len
- (cdm
->num_matches
*
2371 sizeof(struct dev_match_result
));
2374 * If we don't have enough space to put in another
2375 * match result, save our position and tell the
2376 * user there are more devices to check.
2378 if (spaceleft
< sizeof(struct dev_match_result
)) {
2379 bzero(&cdm
->pos
, sizeof(cdm
->pos
));
2380 cdm
->pos
.position_type
=
2381 CAM_DEV_POS_EDT
| CAM_DEV_POS_BUS
|
2382 CAM_DEV_POS_TARGET
| CAM_DEV_POS_DEVICE
|
2385 cdm
->pos
.cookie
.bus
= periph
->path
->bus
;
2386 cdm
->pos
.generations
[CAM_BUS_GENERATION
]=
2387 xsoftc
.bus_generation
;
2388 cdm
->pos
.cookie
.target
= periph
->path
->target
;
2389 cdm
->pos
.generations
[CAM_TARGET_GENERATION
] =
2390 periph
->path
->bus
->generation
;
2391 cdm
->pos
.cookie
.device
= periph
->path
->device
;
2392 cdm
->pos
.generations
[CAM_DEV_GENERATION
] =
2393 periph
->path
->target
->generation
;
2394 cdm
->pos
.cookie
.periph
= periph
;
2395 cdm
->pos
.generations
[CAM_PERIPH_GENERATION
] =
2396 periph
->path
->device
->generation
;
2397 cdm
->status
= CAM_DEV_MATCH_MORE
;
2401 j
= cdm
->num_matches
;
2403 cdm
->matches
[j
].type
= DEV_MATCH_PERIPH
;
2404 cdm
->matches
[j
].result
.periph_result
.path_id
=
2405 periph
->path
->bus
->path_id
;
2406 cdm
->matches
[j
].result
.periph_result
.target_id
=
2407 periph
->path
->target
->target_id
;
2408 cdm
->matches
[j
].result
.periph_result
.target_lun
=
2409 periph
->path
->device
->lun_id
;
2410 cdm
->matches
[j
].result
.periph_result
.unit_number
=
2411 periph
->unit_number
;
2412 strncpy(cdm
->matches
[j
].result
.periph_result
.periph_name
,
2413 periph
->periph_name
, DEV_IDLEN
);
2420 xptedtmatch(struct ccb_dev_match
*cdm
)
2424 cdm
->num_matches
= 0;
2427 * Check the bus list generation. If it has changed, the user
2428 * needs to reset everything and start over.
2430 if ((cdm
->pos
.position_type
& CAM_DEV_POS_BUS
)
2431 && (cdm
->pos
.generations
[CAM_BUS_GENERATION
] != 0)
2432 && (cdm
->pos
.generations
[CAM_BUS_GENERATION
] != xsoftc
.bus_generation
)) {
2433 cdm
->status
= CAM_DEV_MATCH_LIST_CHANGED
;
2437 if ((cdm
->pos
.position_type
& CAM_DEV_POS_BUS
)
2438 && (cdm
->pos
.cookie
.bus
!= NULL
))
2439 ret
= xptbustraverse((struct cam_eb
*)cdm
->pos
.cookie
.bus
,
2440 xptedtbusfunc
, cdm
);
2442 ret
= xptbustraverse(NULL
, xptedtbusfunc
, cdm
);
2445 * If we get back 0, that means that we had to stop before fully
2446 * traversing the EDT. It also means that one of the subroutines
2447 * has set the status field to the proper value. If we get back 1,
2448 * we've fully traversed the EDT and copied out any matching entries.
2451 cdm
->status
= CAM_DEV_MATCH_LAST
;
2457 xptplistpdrvfunc(struct periph_driver
**pdrv
, void *arg
)
2459 struct ccb_dev_match
*cdm
;
2461 cdm
= (struct ccb_dev_match
*)arg
;
2463 if ((cdm
->pos
.position_type
& CAM_DEV_POS_PDPTR
)
2464 && (cdm
->pos
.cookie
.pdrv
== pdrv
)
2465 && (cdm
->pos
.position_type
& CAM_DEV_POS_PERIPH
)
2466 && (cdm
->pos
.generations
[CAM_PERIPH_GENERATION
] != 0)
2467 && (cdm
->pos
.generations
[CAM_PERIPH_GENERATION
] !=
2468 (*pdrv
)->generation
)) {
2469 cdm
->status
= CAM_DEV_MATCH_LIST_CHANGED
;
2473 if ((cdm
->pos
.position_type
& CAM_DEV_POS_PDPTR
)
2474 && (cdm
->pos
.cookie
.pdrv
== pdrv
)
2475 && (cdm
->pos
.position_type
& CAM_DEV_POS_PERIPH
)
2476 && (cdm
->pos
.cookie
.periph
!= NULL
))
2477 return(xptpdperiphtraverse(pdrv
,
2478 (struct cam_periph
*)cdm
->pos
.cookie
.periph
,
2479 xptplistperiphfunc
, arg
));
2481 return(xptpdperiphtraverse(pdrv
, NULL
,xptplistperiphfunc
, arg
));
2485 xptplistperiphfunc(struct cam_periph
*periph
, void *arg
)
2487 struct ccb_dev_match
*cdm
;
2488 dev_match_ret retval
;
2490 cdm
= (struct ccb_dev_match
*)arg
;
2492 retval
= xptperiphmatch(cdm
->patterns
, cdm
->num_patterns
, periph
);
2494 if ((retval
& DM_RET_ACTION_MASK
) == DM_RET_ERROR
) {
2495 cdm
->status
= CAM_DEV_MATCH_ERROR
;
2500 * If the copy flag is set, copy this peripheral out.
2502 if (retval
& DM_RET_COPY
) {
2505 spaceleft
= cdm
->match_buf_len
- (cdm
->num_matches
*
2506 sizeof(struct dev_match_result
));
2509 * If we don't have enough space to put in another
2510 * match result, save our position and tell the
2511 * user there are more devices to check.
2513 if (spaceleft
< sizeof(struct dev_match_result
)) {
2514 struct periph_driver
**pdrv
;
2517 bzero(&cdm
->pos
, sizeof(cdm
->pos
));
2518 cdm
->pos
.position_type
=
2519 CAM_DEV_POS_PDRV
| CAM_DEV_POS_PDPTR
|
2523 * This may look a bit non-sensical, but it is
2524 * actually quite logical. There are very few
2525 * peripheral drivers, and bloating every peripheral
2526 * structure with a pointer back to its parent
2527 * peripheral driver linker set entry would cost
2528 * more in the long run than doing this quick lookup.
2530 for (pdrv
= periph_drivers
; *pdrv
!= NULL
; pdrv
++) {
2531 if (strcmp((*pdrv
)->driver_name
,
2532 periph
->periph_name
) == 0)
2536 if (*pdrv
== NULL
) {
2537 cdm
->status
= CAM_DEV_MATCH_ERROR
;
2541 cdm
->pos
.cookie
.pdrv
= pdrv
;
2543 * The periph generation slot does double duty, as
2544 * does the periph pointer slot. They are used for
2545 * both edt and pdrv lookups and positioning.
2547 cdm
->pos
.cookie
.periph
= periph
;
2548 cdm
->pos
.generations
[CAM_PERIPH_GENERATION
] =
2549 (*pdrv
)->generation
;
2550 cdm
->status
= CAM_DEV_MATCH_MORE
;
2554 j
= cdm
->num_matches
;
2556 cdm
->matches
[j
].type
= DEV_MATCH_PERIPH
;
2557 cdm
->matches
[j
].result
.periph_result
.path_id
=
2558 periph
->path
->bus
->path_id
;
2561 * The transport layer peripheral doesn't have a target or
2564 if (periph
->path
->target
)
2565 cdm
->matches
[j
].result
.periph_result
.target_id
=
2566 periph
->path
->target
->target_id
;
2568 cdm
->matches
[j
].result
.periph_result
.target_id
= -1;
2570 if (periph
->path
->device
)
2571 cdm
->matches
[j
].result
.periph_result
.target_lun
=
2572 periph
->path
->device
->lun_id
;
2574 cdm
->matches
[j
].result
.periph_result
.target_lun
= -1;
2576 cdm
->matches
[j
].result
.periph_result
.unit_number
=
2577 periph
->unit_number
;
2578 strncpy(cdm
->matches
[j
].result
.periph_result
.periph_name
,
2579 periph
->periph_name
, DEV_IDLEN
);
2586 xptperiphlistmatch(struct ccb_dev_match
*cdm
)
2590 cdm
->num_matches
= 0;
2593 * At this point in the edt traversal function, we check the bus
2594 * list generation to make sure that no busses have been added or
2595 * removed since the user last sent a XPT_DEV_MATCH ccb through.
2596 * For the peripheral driver list traversal function, however, we
2597 * don't have to worry about new peripheral driver types coming or
2598 * going; they're in a linker set, and therefore can't change
2599 * without a recompile.
2602 if ((cdm
->pos
.position_type
& CAM_DEV_POS_PDPTR
)
2603 && (cdm
->pos
.cookie
.pdrv
!= NULL
))
2604 ret
= xptpdrvtraverse(
2605 (struct periph_driver
**)cdm
->pos
.cookie
.pdrv
,
2606 xptplistpdrvfunc
, cdm
);
2608 ret
= xptpdrvtraverse(NULL
, xptplistpdrvfunc
, cdm
);
2611 * If we get back 0, that means that we had to stop before fully
2612 * traversing the peripheral driver tree. It also means that one of
2613 * the subroutines has set the status field to the proper value. If
2614 * we get back 1, we've fully traversed the EDT and copied out any
2618 cdm
->status
= CAM_DEV_MATCH_LAST
;
2624 xptbustraverse(struct cam_eb
*start_bus
, xpt_busfunc_t
*tr_func
, void *arg
)
2626 struct cam_eb
*bus
, *next_bus
;
2631 lockmgr(&xsoftc
.xpt_topo_lock
, LK_EXCLUSIVE
);
2632 for (bus
= (start_bus
? start_bus
: TAILQ_FIRST(&xsoftc
.xpt_busses
));
2635 next_bus
= TAILQ_NEXT(bus
, links
);
2637 lockmgr(&xsoftc
.xpt_topo_lock
, LK_RELEASE
);
2638 CAM_SIM_LOCK(bus
->sim
);
2639 retval
= tr_func(bus
, arg
);
2640 CAM_SIM_UNLOCK(bus
->sim
);
2643 lockmgr(&xsoftc
.xpt_topo_lock
, LK_EXCLUSIVE
);
2645 lockmgr(&xsoftc
.xpt_topo_lock
, LK_RELEASE
);
2651 xpttargettraverse(struct cam_eb
*bus
, struct cam_et
*start_target
,
2652 xpt_targetfunc_t
*tr_func
, void *arg
)
2654 struct cam_et
*target
, *next_target
;
2658 for (target
= (start_target
? start_target
:
2659 TAILQ_FIRST(&bus
->et_entries
));
2660 target
!= NULL
; target
= next_target
) {
2662 next_target
= TAILQ_NEXT(target
, links
);
2664 retval
= tr_func(target
, arg
);
2674 xptdevicetraverse(struct cam_et
*target
, struct cam_ed
*start_device
,
2675 xpt_devicefunc_t
*tr_func
, void *arg
)
2677 struct cam_ed
*device
, *next_device
;
2681 for (device
= (start_device
? start_device
:
2682 TAILQ_FIRST(&target
->ed_entries
));
2684 device
= next_device
) {
2686 next_device
= TAILQ_NEXT(device
, links
);
2688 retval
= tr_func(device
, arg
);
2698 xptperiphtraverse(struct cam_ed
*device
, struct cam_periph
*start_periph
,
2699 xpt_periphfunc_t
*tr_func
, void *arg
)
2701 struct cam_periph
*periph
, *next_periph
;
2706 for (periph
= (start_periph
? start_periph
:
2707 SLIST_FIRST(&device
->periphs
));
2709 periph
= next_periph
) {
2711 next_periph
= SLIST_NEXT(periph
, periph_links
);
2713 retval
= tr_func(periph
, arg
);
2722 xptpdrvtraverse(struct periph_driver
**start_pdrv
,
2723 xpt_pdrvfunc_t
*tr_func
, void *arg
)
2725 struct periph_driver
**pdrv
;
2731 * We don't traverse the peripheral driver list like we do the
2732 * other lists, because it is a linker set, and therefore cannot be
2733 * changed during runtime. If the peripheral driver list is ever
2734 * re-done to be something other than a linker set (i.e. it can
2735 * change while the system is running), the list traversal should
2736 * be modified to work like the other traversal functions.
2738 for (pdrv
= (start_pdrv
? start_pdrv
: periph_drivers
);
2739 *pdrv
!= NULL
; pdrv
++) {
2740 retval
= tr_func(pdrv
, arg
);
2750 xptpdperiphtraverse(struct periph_driver
**pdrv
,
2751 struct cam_periph
*start_periph
,
2752 xpt_periphfunc_t
*tr_func
, void *arg
)
2754 struct cam_periph
*periph
, *next_periph
;
2759 for (periph
= (start_periph
? start_periph
:
2760 TAILQ_FIRST(&(*pdrv
)->units
)); periph
!= NULL
;
2761 periph
= next_periph
) {
2763 next_periph
= TAILQ_NEXT(periph
, unit_links
);
2765 retval
= tr_func(periph
, arg
);
2773 xptdefbusfunc(struct cam_eb
*bus
, void *arg
)
2775 struct xpt_traverse_config
*tr_config
;
2777 tr_config
= (struct xpt_traverse_config
*)arg
;
2779 if (tr_config
->depth
== XPT_DEPTH_BUS
) {
2780 xpt_busfunc_t
*tr_func
;
2782 tr_func
= (xpt_busfunc_t
*)tr_config
->tr_func
;
2784 return(tr_func(bus
, tr_config
->tr_arg
));
2786 return(xpttargettraverse(bus
, NULL
, xptdeftargetfunc
, arg
));
2790 xptdeftargetfunc(struct cam_et
*target
, void *arg
)
2792 struct xpt_traverse_config
*tr_config
;
2794 tr_config
= (struct xpt_traverse_config
*)arg
;
2796 if (tr_config
->depth
== XPT_DEPTH_TARGET
) {
2797 xpt_targetfunc_t
*tr_func
;
2799 tr_func
= (xpt_targetfunc_t
*)tr_config
->tr_func
;
2801 return(tr_func(target
, tr_config
->tr_arg
));
2803 return(xptdevicetraverse(target
, NULL
, xptdefdevicefunc
, arg
));
2807 xptdefdevicefunc(struct cam_ed
*device
, void *arg
)
2809 struct xpt_traverse_config
*tr_config
;
2811 tr_config
= (struct xpt_traverse_config
*)arg
;
2813 if (tr_config
->depth
== XPT_DEPTH_DEVICE
) {
2814 xpt_devicefunc_t
*tr_func
;
2816 tr_func
= (xpt_devicefunc_t
*)tr_config
->tr_func
;
2818 return(tr_func(device
, tr_config
->tr_arg
));
2820 return(xptperiphtraverse(device
, NULL
, xptdefperiphfunc
, arg
));
2824 xptdefperiphfunc(struct cam_periph
*periph
, void *arg
)
2826 struct xpt_traverse_config
*tr_config
;
2827 xpt_periphfunc_t
*tr_func
;
2829 tr_config
= (struct xpt_traverse_config
*)arg
;
2831 tr_func
= (xpt_periphfunc_t
*)tr_config
->tr_func
;
2834 * Unlike the other default functions, we don't check for depth
2835 * here. The peripheral driver level is the last level in the EDT,
2836 * so if we're here, we should execute the function in question.
2838 return(tr_func(periph
, tr_config
->tr_arg
));
2842 * Execute the given function for every bus in the EDT.
2845 xpt_for_all_busses(xpt_busfunc_t
*tr_func
, void *arg
)
2847 struct xpt_traverse_config tr_config
;
2849 tr_config
.depth
= XPT_DEPTH_BUS
;
2850 tr_config
.tr_func
= tr_func
;
2851 tr_config
.tr_arg
= arg
;
2853 return(xptbustraverse(NULL
, xptdefbusfunc
, &tr_config
));
2857 * Execute the given function for every device in the EDT.
2860 xpt_for_all_devices(xpt_devicefunc_t
*tr_func
, void *arg
)
2862 struct xpt_traverse_config tr_config
;
2864 tr_config
.depth
= XPT_DEPTH_DEVICE
;
2865 tr_config
.tr_func
= tr_func
;
2866 tr_config
.tr_arg
= arg
;
2868 return(xptbustraverse(NULL
, xptdefbusfunc
, &tr_config
));
2872 xptsetasyncfunc(struct cam_ed
*device
, void *arg
)
2874 struct cam_path path
;
2875 struct ccb_getdev cgd
;
2876 struct async_node
*cur_entry
;
2878 cur_entry
= (struct async_node
*)arg
;
2881 * Don't report unconfigured devices (Wildcard devs,
2882 * devices only for target mode, device instances
2883 * that have been invalidated but are waiting for
2884 * their last reference count to be released).
2886 if ((device
->flags
& CAM_DEV_UNCONFIGURED
) != 0)
2889 xpt_compile_path(&path
,
2891 device
->target
->bus
->path_id
,
2892 device
->target
->target_id
,
2894 xpt_setup_ccb(&cgd
.ccb_h
, &path
, /*priority*/1);
2895 cgd
.ccb_h
.func_code
= XPT_GDEV_TYPE
;
2896 xpt_action((union ccb
*)&cgd
);
2897 cur_entry
->callback(cur_entry
->callback_arg
,
2900 xpt_release_path(&path
);
2906 xptsetasyncbusfunc(struct cam_eb
*bus
, void *arg
)
2908 struct cam_path path
;
2909 struct ccb_pathinq cpi
;
2910 struct async_node
*cur_entry
;
2912 cur_entry
= (struct async_node
*)arg
;
2914 xpt_compile_path(&path
, /*periph*/NULL
,
2916 CAM_TARGET_WILDCARD
,
2918 xpt_setup_ccb(&cpi
.ccb_h
, &path
, /*priority*/1);
2919 cpi
.ccb_h
.func_code
= XPT_PATH_INQ
;
2920 xpt_action((union ccb
*)&cpi
);
2921 cur_entry
->callback(cur_entry
->callback_arg
,
2924 xpt_release_path(&path
);
2930 xpt_action_sasync_cb(void *context
, int pending
)
2932 struct async_node
*cur_entry
;
2933 struct xpt_task
*task
;
2936 task
= (struct xpt_task
*)context
;
2937 cur_entry
= (struct async_node
*)task
->data1
;
2938 added
= task
->data2
;
2940 if ((added
& AC_FOUND_DEVICE
) != 0) {
2942 * Get this peripheral up to date with all
2943 * the currently existing devices.
2945 xpt_for_all_devices(xptsetasyncfunc
, cur_entry
);
2947 if ((added
& AC_PATH_REGISTERED
) != 0) {
2949 * Get this peripheral up to date with all
2950 * the currently existing busses.
2952 xpt_for_all_busses(xptsetasyncbusfunc
, cur_entry
);
2954 kfree(task
, M_CAMXPT
);
2958 xpt_action(union ccb
*start_ccb
)
2960 CAM_DEBUG(start_ccb
->ccb_h
.path
, CAM_DEBUG_TRACE
, ("xpt_action\n"));
2962 start_ccb
->ccb_h
.status
= CAM_REQ_INPROG
;
2964 switch (start_ccb
->ccb_h
.func_code
) {
2968 struct cam_ed
*device
;
2970 char cdb_str
[(SCSI_MAX_CDBLEN
* 3) + 1];
2971 struct cam_path
*path
;
2973 path
= start_ccb
->ccb_h
.path
;
2977 * For the sake of compatibility with SCSI-1
2978 * devices that may not understand the identify
2979 * message, we include lun information in the
2980 * second byte of all commands. SCSI-1 specifies
2981 * that luns are a 3 bit value and reserves only 3
2982 * bits for lun information in the CDB. Later
2983 * revisions of the SCSI spec allow for more than 8
2984 * luns, but have deprecated lun information in the
2985 * CDB. So, if the lun won't fit, we must omit.
2987 * Also be aware that during initial probing for devices,
2988 * the inquiry information is unknown but initialized to 0.
2989 * This means that this code will be exercised while probing
2990 * devices with an ANSI revision greater than 2.
2992 device
= start_ccb
->ccb_h
.path
->device
;
2993 if (device
->protocol_version
<= SCSI_REV_2
2994 && start_ccb
->ccb_h
.target_lun
< 8
2995 && (start_ccb
->ccb_h
.flags
& CAM_CDB_POINTER
) == 0) {
2997 start_ccb
->csio
.cdb_io
.cdb_bytes
[1] |=
2998 start_ccb
->ccb_h
.target_lun
<< 5;
3000 start_ccb
->csio
.scsi_status
= SCSI_STATUS_OK
;
3001 CAM_DEBUG(path
, CAM_DEBUG_CDB
,("%s. CDB: %s\n",
3002 scsi_op_desc(start_ccb
->csio
.cdb_io
.cdb_bytes
[0],
3003 &path
->device
->inq_data
),
3004 scsi_cdb_string(start_ccb
->csio
.cdb_io
.cdb_bytes
,
3005 cdb_str
, sizeof(cdb_str
))));
3009 case XPT_CONT_TARGET_IO
:
3010 start_ccb
->csio
.sense_resid
= 0;
3011 start_ccb
->csio
.resid
= 0;
3016 struct cam_path
*path
;
3017 struct cam_sim
*sim
;
3020 path
= start_ccb
->ccb_h
.path
;
3022 sim
= path
->bus
->sim
;
3023 if (sim
== &cam_dead_sim
) {
3024 /* The SIM has gone; just execute the CCB directly. */
3025 cam_ccbq_send_ccb(&path
->device
->ccbq
, start_ccb
);
3026 (*(sim
->sim_action
))(sim
, start_ccb
);
3030 cam_ccbq_insert_ccb(&path
->device
->ccbq
, start_ccb
);
3031 if (path
->device
->qfrozen_cnt
== 0)
3032 runq
= xpt_schedule_dev_sendq(path
->bus
, path
->device
);
3036 xpt_run_dev_sendq(path
->bus
);
3039 case XPT_SET_TRAN_SETTINGS
:
3041 xpt_set_transfer_settings(&start_ccb
->cts
,
3042 start_ccb
->ccb_h
.path
->device
,
3043 /*async_update*/FALSE
);
3046 case XPT_CALC_GEOMETRY
:
3048 struct cam_sim
*sim
;
3050 /* Filter out garbage */
3051 if (start_ccb
->ccg
.block_size
== 0
3052 || start_ccb
->ccg
.volume_size
== 0) {
3053 start_ccb
->ccg
.cylinders
= 0;
3054 start_ccb
->ccg
.heads
= 0;
3055 start_ccb
->ccg
.secs_per_track
= 0;
3056 start_ccb
->ccb_h
.status
= CAM_REQ_CMP
;
3059 sim
= start_ccb
->ccb_h
.path
->bus
->sim
;
3060 (*(sim
->sim_action
))(sim
, start_ccb
);
3065 union ccb
* abort_ccb
;
3067 abort_ccb
= start_ccb
->cab
.abort_ccb
;
3068 if (XPT_FC_IS_DEV_QUEUED(abort_ccb
)) {
3070 if (abort_ccb
->ccb_h
.pinfo
.index
>= 0) {
3071 struct cam_ccbq
*ccbq
;
3073 ccbq
= &abort_ccb
->ccb_h
.path
->device
->ccbq
;
3074 cam_ccbq_remove_ccb(ccbq
, abort_ccb
);
3075 abort_ccb
->ccb_h
.status
=
3076 CAM_REQ_ABORTED
|CAM_DEV_QFRZN
;
3077 xpt_freeze_devq(abort_ccb
->ccb_h
.path
, 1);
3078 xpt_done(abort_ccb
);
3079 start_ccb
->ccb_h
.status
= CAM_REQ_CMP
;
3082 if (abort_ccb
->ccb_h
.pinfo
.index
== CAM_UNQUEUED_INDEX
3083 && (abort_ccb
->ccb_h
.status
& CAM_SIM_QUEUED
) == 0) {
3085 * We've caught this ccb en route to
3086 * the SIM. Flag it for abort and the
3087 * SIM will do so just before starting
3088 * real work on the CCB.
3090 abort_ccb
->ccb_h
.status
=
3091 CAM_REQ_ABORTED
|CAM_DEV_QFRZN
;
3092 xpt_freeze_devq(abort_ccb
->ccb_h
.path
, 1);
3093 start_ccb
->ccb_h
.status
= CAM_REQ_CMP
;
3097 if (XPT_FC_IS_QUEUED(abort_ccb
)
3098 && (abort_ccb
->ccb_h
.pinfo
.index
== CAM_DONEQ_INDEX
)) {
3100 * It's already completed but waiting
3101 * for our SWI to get to it.
3103 start_ccb
->ccb_h
.status
= CAM_UA_ABORT
;
3107 * If we weren't able to take care of the abort request
3108 * in the XPT, pass the request down to the SIM for processing.
3112 case XPT_ACCEPT_TARGET_IO
:
3114 case XPT_IMMED_NOTIFY
:
3115 case XPT_NOTIFY_ACK
:
3116 case XPT_GET_TRAN_SETTINGS
:
3119 struct cam_sim
*sim
;
3121 sim
= start_ccb
->ccb_h
.path
->bus
->sim
;
3122 (*(sim
->sim_action
))(sim
, start_ccb
);
3127 struct cam_sim
*sim
;
3129 sim
= start_ccb
->ccb_h
.path
->bus
->sim
;
3130 (*(sim
->sim_action
))(sim
, start_ccb
);
3133 case XPT_PATH_STATS
:
3134 start_ccb
->cpis
.last_reset
=
3135 start_ccb
->ccb_h
.path
->bus
->last_reset
;
3136 start_ccb
->ccb_h
.status
= CAM_REQ_CMP
;
3142 dev
= start_ccb
->ccb_h
.path
->device
;
3143 if ((dev
->flags
& CAM_DEV_UNCONFIGURED
) != 0) {
3144 start_ccb
->ccb_h
.status
= CAM_DEV_NOT_THERE
;
3146 struct ccb_getdev
*cgd
;
3148 cgd
= &start_ccb
->cgd
;
3149 cgd
->inq_data
= dev
->inq_data
;
3150 cgd
->ccb_h
.status
= CAM_REQ_CMP
;
3151 cgd
->serial_num_len
= dev
->serial_num_len
;
3152 if ((dev
->serial_num_len
> 0)
3153 && (dev
->serial_num
!= NULL
))
3154 bcopy(dev
->serial_num
, cgd
->serial_num
,
3155 dev
->serial_num_len
);
3159 case XPT_GDEV_STATS
:
3163 dev
= start_ccb
->ccb_h
.path
->device
;
3164 if ((dev
->flags
& CAM_DEV_UNCONFIGURED
) != 0) {
3165 start_ccb
->ccb_h
.status
= CAM_DEV_NOT_THERE
;
3167 struct ccb_getdevstats
*cgds
;
3171 cgds
= &start_ccb
->cgds
;
3172 bus
= cgds
->ccb_h
.path
->bus
;
3173 tar
= cgds
->ccb_h
.path
->target
;
3174 cgds
->dev_openings
= dev
->ccbq
.dev_openings
;
3175 cgds
->dev_active
= dev
->ccbq
.dev_active
;
3176 cgds
->devq_openings
= dev
->ccbq
.devq_openings
;
3177 cgds
->devq_queued
= dev
->ccbq
.queue
.entries
;
3178 cgds
->held
= dev
->ccbq
.held
;
3179 cgds
->last_reset
= tar
->last_reset
;
3180 cgds
->maxtags
= dev
->quirk
->maxtags
;
3181 cgds
->mintags
= dev
->quirk
->mintags
;
3182 if (timevalcmp(&tar
->last_reset
, &bus
->last_reset
, <))
3183 cgds
->last_reset
= bus
->last_reset
;
3184 cgds
->ccb_h
.status
= CAM_REQ_CMP
;
3190 struct cam_periph
*nperiph
;
3191 struct periph_list
*periph_head
;
3192 struct ccb_getdevlist
*cgdl
;
3194 struct cam_ed
*device
;
3201 * Don't want anyone mucking with our data.
3203 device
= start_ccb
->ccb_h
.path
->device
;
3204 periph_head
= &device
->periphs
;
3205 cgdl
= &start_ccb
->cgdl
;
3208 * Check and see if the list has changed since the user
3209 * last requested a list member. If so, tell them that the
3210 * list has changed, and therefore they need to start over
3211 * from the beginning.
3213 if ((cgdl
->index
!= 0) &&
3214 (cgdl
->generation
!= device
->generation
)) {
3215 cgdl
->status
= CAM_GDEVLIST_LIST_CHANGED
;
3220 * Traverse the list of peripherals and attempt to find
3221 * the requested peripheral.
3223 for (nperiph
= SLIST_FIRST(periph_head
), i
= 0;
3224 (nperiph
!= NULL
) && (i
<= cgdl
->index
);
3225 nperiph
= SLIST_NEXT(nperiph
, periph_links
), i
++) {
3226 if (i
== cgdl
->index
) {
3227 strncpy(cgdl
->periph_name
,
3228 nperiph
->periph_name
,
3230 cgdl
->unit_number
= nperiph
->unit_number
;
3235 cgdl
->status
= CAM_GDEVLIST_ERROR
;
3239 if (nperiph
== NULL
)
3240 cgdl
->status
= CAM_GDEVLIST_LAST_DEVICE
;
3242 cgdl
->status
= CAM_GDEVLIST_MORE_DEVS
;
3245 cgdl
->generation
= device
->generation
;
3247 cgdl
->ccb_h
.status
= CAM_REQ_CMP
;
3252 dev_pos_type position_type
;
3253 struct ccb_dev_match
*cdm
;
3256 cdm
= &start_ccb
->cdm
;
3259 * There are two ways of getting at information in the EDT.
3260 * The first way is via the primary EDT tree. It starts
3261 * with a list of busses, then a list of targets on a bus,
3262 * then devices/luns on a target, and then peripherals on a
3263 * device/lun. The "other" way is by the peripheral driver
3264 * lists. The peripheral driver lists are organized by
3265 * peripheral driver. (obviously) So it makes sense to
3266 * use the peripheral driver list if the user is looking
3267 * for something like "da1", or all "da" devices. If the
3268 * user is looking for something on a particular bus/target
3269 * or lun, it's generally better to go through the EDT tree.
3272 if (cdm
->pos
.position_type
!= CAM_DEV_POS_NONE
)
3273 position_type
= cdm
->pos
.position_type
;
3277 position_type
= CAM_DEV_POS_NONE
;
3279 for (i
= 0; i
< cdm
->num_patterns
; i
++) {
3280 if ((cdm
->patterns
[i
].type
== DEV_MATCH_BUS
)
3281 ||(cdm
->patterns
[i
].type
== DEV_MATCH_DEVICE
)){
3282 position_type
= CAM_DEV_POS_EDT
;
3287 if (cdm
->num_patterns
== 0)
3288 position_type
= CAM_DEV_POS_EDT
;
3289 else if (position_type
== CAM_DEV_POS_NONE
)
3290 position_type
= CAM_DEV_POS_PDRV
;
3293 switch(position_type
& CAM_DEV_POS_TYPEMASK
) {
3294 case CAM_DEV_POS_EDT
:
3295 ret
= xptedtmatch(cdm
);
3297 case CAM_DEV_POS_PDRV
:
3298 ret
= xptperiphlistmatch(cdm
);
3301 cdm
->status
= CAM_DEV_MATCH_ERROR
;
3305 if (cdm
->status
== CAM_DEV_MATCH_ERROR
)
3306 start_ccb
->ccb_h
.status
= CAM_REQ_CMP_ERR
;
3308 start_ccb
->ccb_h
.status
= CAM_REQ_CMP
;
3314 struct ccb_setasync
*csa
;
3315 struct async_node
*cur_entry
;
3316 struct async_list
*async_head
;
3319 csa
= &start_ccb
->csa
;
3320 added
= csa
->event_enable
;
3321 async_head
= &csa
->ccb_h
.path
->device
->asyncs
;
3324 * If there is already an entry for us, simply
3327 cur_entry
= SLIST_FIRST(async_head
);
3328 while (cur_entry
!= NULL
) {
3329 if ((cur_entry
->callback_arg
== csa
->callback_arg
)
3330 && (cur_entry
->callback
== csa
->callback
))
3332 cur_entry
= SLIST_NEXT(cur_entry
, links
);
3335 if (cur_entry
!= NULL
) {
3337 * If the request has no flags set,
3340 added
&= ~cur_entry
->event_enable
;
3341 if (csa
->event_enable
== 0) {
3342 SLIST_REMOVE(async_head
, cur_entry
,
3344 csa
->ccb_h
.path
->device
->refcount
--;
3345 kfree(cur_entry
, M_CAMXPT
);
3347 cur_entry
->event_enable
= csa
->event_enable
;
3350 cur_entry
= kmalloc(sizeof(*cur_entry
), M_CAMXPT
,
3352 cur_entry
->event_enable
= csa
->event_enable
;
3353 cur_entry
->callback_arg
= csa
->callback_arg
;
3354 cur_entry
->callback
= csa
->callback
;
3355 SLIST_INSERT_HEAD(async_head
, cur_entry
, links
);
3356 csa
->ccb_h
.path
->device
->refcount
++;
3360 * Need to decouple this operation via a taskqueue so that
3361 * the locking doesn't become a mess.
3363 if ((added
& (AC_FOUND_DEVICE
| AC_PATH_REGISTERED
)) != 0) {
3364 struct xpt_task
*task
;
3366 task
= kmalloc(sizeof(struct xpt_task
), M_CAMXPT
,
3369 TASK_INIT(&task
->task
, 0, xpt_action_sasync_cb
, task
);
3370 task
->data1
= cur_entry
;
3371 task
->data2
= added
;
3372 taskqueue_enqueue(taskqueue_thread
[mycpuid
],
3376 start_ccb
->ccb_h
.status
= CAM_REQ_CMP
;
3381 struct ccb_relsim
*crs
;
3384 crs
= &start_ccb
->crs
;
3385 dev
= crs
->ccb_h
.path
->device
;
3388 crs
->ccb_h
.status
= CAM_DEV_NOT_THERE
;
3392 if ((crs
->release_flags
& RELSIM_ADJUST_OPENINGS
) != 0) {
3394 if (INQ_DATA_TQ_ENABLED(&dev
->inq_data
)) {
3395 /* Don't ever go below one opening */
3396 if (crs
->openings
> 0) {
3397 xpt_dev_ccbq_resize(crs
->ccb_h
.path
,
3401 xpt_print(crs
->ccb_h
.path
,
3402 "tagged openings now %d\n",
3409 if ((crs
->release_flags
& RELSIM_RELEASE_AFTER_TIMEOUT
) != 0) {
3411 if ((dev
->flags
& CAM_DEV_REL_TIMEOUT_PENDING
) != 0) {
3414 * Just extend the old timeout and decrement
3415 * the freeze count so that a single timeout
3416 * is sufficient for releasing the queue.
3418 start_ccb
->ccb_h
.flags
&= ~CAM_DEV_QFREEZE
;
3419 callout_stop(&dev
->callout
);
3422 start_ccb
->ccb_h
.flags
|= CAM_DEV_QFREEZE
;
3425 callout_reset(&dev
->callout
,
3426 (crs
->release_timeout
* hz
) / 1000,
3427 xpt_release_devq_timeout
, dev
);
3429 dev
->flags
|= CAM_DEV_REL_TIMEOUT_PENDING
;
3433 if ((crs
->release_flags
& RELSIM_RELEASE_AFTER_CMDCMPLT
) != 0) {
3435 if ((dev
->flags
& CAM_DEV_REL_ON_COMPLETE
) != 0) {
3437 * Decrement the freeze count so that a single
3438 * completion is still sufficient to unfreeze
3441 start_ccb
->ccb_h
.flags
&= ~CAM_DEV_QFREEZE
;
3444 dev
->flags
|= CAM_DEV_REL_ON_COMPLETE
;
3445 start_ccb
->ccb_h
.flags
|= CAM_DEV_QFREEZE
;
3449 if ((crs
->release_flags
& RELSIM_RELEASE_AFTER_QEMPTY
) != 0) {
3451 if ((dev
->flags
& CAM_DEV_REL_ON_QUEUE_EMPTY
) != 0
3452 || (dev
->ccbq
.dev_active
== 0)) {
3454 start_ccb
->ccb_h
.flags
&= ~CAM_DEV_QFREEZE
;
3457 dev
->flags
|= CAM_DEV_REL_ON_QUEUE_EMPTY
;
3458 start_ccb
->ccb_h
.flags
|= CAM_DEV_QFREEZE
;
3462 if ((start_ccb
->ccb_h
.flags
& CAM_DEV_QFREEZE
) == 0) {
3464 xpt_release_devq(crs
->ccb_h
.path
, /*count*/1,
3467 start_ccb
->crs
.qfrozen_cnt
= dev
->qfrozen_cnt
;
3468 start_ccb
->ccb_h
.status
= CAM_REQ_CMP
;
3472 xpt_scan_bus(start_ccb
->ccb_h
.path
->periph
, start_ccb
);
3475 xpt_scan_lun(start_ccb
->ccb_h
.path
->periph
,
3476 start_ccb
->ccb_h
.path
, start_ccb
->crcn
.flags
,
3481 #ifdef CAM_DEBUG_DELAY
3482 cam_debug_delay
= CAM_DEBUG_DELAY
;
3484 cam_dflags
= start_ccb
->cdbg
.flags
;
3485 if (cam_dpath
!= NULL
) {
3486 xpt_free_path(cam_dpath
);
3490 if (cam_dflags
!= CAM_DEBUG_NONE
) {
3491 if (xpt_create_path(&cam_dpath
, xpt_periph
,
3492 start_ccb
->ccb_h
.path_id
,
3493 start_ccb
->ccb_h
.target_id
,
3494 start_ccb
->ccb_h
.target_lun
) !=
3496 start_ccb
->ccb_h
.status
= CAM_RESRC_UNAVAIL
;
3497 cam_dflags
= CAM_DEBUG_NONE
;
3499 start_ccb
->ccb_h
.status
= CAM_REQ_CMP
;
3500 xpt_print(cam_dpath
, "debugging flags now %x\n",
3505 start_ccb
->ccb_h
.status
= CAM_REQ_CMP
;
3507 #else /* !CAMDEBUG */
3508 start_ccb
->ccb_h
.status
= CAM_FUNC_NOTAVAIL
;
3509 #endif /* CAMDEBUG */
3513 if ((start_ccb
->ccb_h
.flags
& CAM_DEV_QFREEZE
) != 0)
3514 xpt_freeze_devq(start_ccb
->ccb_h
.path
, 1);
3515 start_ccb
->ccb_h
.status
= CAM_REQ_CMP
;
3522 start_ccb
->ccb_h
.status
= CAM_PROVIDE_FAIL
;
3528 xpt_polled_action(union ccb
*start_ccb
)
3531 struct cam_sim
*sim
;
3532 struct cam_devq
*devq
;
3535 timeout
= start_ccb
->ccb_h
.timeout
;
3536 sim
= start_ccb
->ccb_h
.path
->bus
->sim
;
3538 dev
= start_ccb
->ccb_h
.path
->device
;
3540 sim_lock_assert_owned(sim
->lock
);
3543 * Steal an opening so that no other queued requests
3544 * can get it before us while we simulate interrupts.
3546 dev
->ccbq
.devq_openings
--;
3547 dev
->ccbq
.dev_openings
--;
3549 while(((devq
&& devq
->send_openings
<= 0) || dev
->ccbq
.dev_openings
< 0)
3550 && (--timeout
> 0)) {
3552 (*(sim
->sim_poll
))(sim
);
3553 camisr_runqueue(sim
);
3556 dev
->ccbq
.devq_openings
++;
3557 dev
->ccbq
.dev_openings
++;
3560 xpt_action(start_ccb
);
3561 while(--timeout
> 0) {
3562 (*(sim
->sim_poll
))(sim
);
3563 camisr_runqueue(sim
);
3564 if ((start_ccb
->ccb_h
.status
& CAM_STATUS_MASK
)
3571 * XXX Is it worth adding a sim_timeout entry
3572 * point so we can attempt recovery? If
3573 * this is only used for dumps, I don't think
3576 start_ccb
->ccb_h
.status
= CAM_CMD_TIMEOUT
;
3579 start_ccb
->ccb_h
.status
= CAM_RESRC_UNAVAIL
;
3584 * Schedule a peripheral driver to receive a ccb when it's
3585 * target device has space for more transactions.
3588 xpt_schedule(struct cam_periph
*perph
, u_int32_t new_priority
)
3590 struct cam_ed
*device
;
3591 union ccb
*work_ccb
;
3594 sim_lock_assert_owned(perph
->sim
->lock
);
3596 CAM_DEBUG(perph
->path
, CAM_DEBUG_TRACE
, ("xpt_schedule\n"));
3597 device
= perph
->path
->device
;
3598 if (periph_is_queued(perph
)) {
3599 /* Simply reorder based on new priority */
3600 CAM_DEBUG(perph
->path
, CAM_DEBUG_SUBTRACE
,
3601 (" change priority to %d\n", new_priority
));
3602 if (new_priority
< perph
->pinfo
.priority
) {
3603 camq_change_priority(&device
->drvq
,
3608 } else if (perph
->path
->bus
->sim
== &cam_dead_sim
) {
3609 /* The SIM is gone so just call periph_start directly. */
3610 work_ccb
= xpt_get_ccb(perph
->path
->device
);
3611 if (work_ccb
== NULL
)
3613 xpt_setup_ccb(&work_ccb
->ccb_h
, perph
->path
, new_priority
);
3614 perph
->pinfo
.priority
= new_priority
;
3615 perph
->periph_start(perph
, work_ccb
);
3618 /* New entry on the queue */
3619 CAM_DEBUG(perph
->path
, CAM_DEBUG_SUBTRACE
,
3620 (" added periph to queue\n"));
3621 perph
->pinfo
.priority
= new_priority
;
3622 perph
->pinfo
.generation
= ++device
->drvq
.generation
;
3623 camq_insert(&device
->drvq
, &perph
->pinfo
);
3624 runq
= xpt_schedule_dev_allocq(perph
->path
->bus
, device
);
3627 CAM_DEBUG(perph
->path
, CAM_DEBUG_SUBTRACE
,
3628 (" calling xpt_run_devq\n"));
3629 xpt_run_dev_allocq(perph
->path
->bus
);
3635 * Schedule a device to run on a given queue.
3636 * If the device was inserted as a new entry on the queue,
3637 * return 1 meaning the device queue should be run. If we
3638 * were already queued, implying someone else has already
3639 * started the queue, return 0 so the caller doesn't attempt
3643 xpt_schedule_dev(struct camq
*queue
, cam_pinfo
*pinfo
,
3644 u_int32_t new_priority
)
3647 u_int32_t old_priority
;
3649 CAM_DEBUG_PRINT(CAM_DEBUG_XPT
, ("xpt_schedule_dev\n"));
3651 old_priority
= pinfo
->priority
;
3654 * Are we already queued?
3656 if (pinfo
->index
!= CAM_UNQUEUED_INDEX
) {
3657 /* Simply reorder based on new priority */
3658 if (new_priority
< old_priority
) {
3659 camq_change_priority(queue
, pinfo
->index
,
3661 CAM_DEBUG_PRINT(CAM_DEBUG_XPT
,
3662 ("changed priority to %d\n",
3667 /* New entry on the queue */
3668 if (new_priority
< old_priority
)
3669 pinfo
->priority
= new_priority
;
3671 CAM_DEBUG_PRINT(CAM_DEBUG_XPT
,
3672 ("Inserting onto queue\n"));
3673 pinfo
->generation
= ++queue
->generation
;
3674 camq_insert(queue
, pinfo
);
3681 xpt_run_dev_allocq(struct cam_eb
*bus
)
3683 struct cam_devq
*devq
;
3685 if ((devq
= bus
->sim
->devq
) == NULL
) {
3686 CAM_DEBUG_PRINT(CAM_DEBUG_XPT
, ("xpt_run_dev_allocq: NULL devq\n"));
3689 CAM_DEBUG_PRINT(CAM_DEBUG_XPT
, ("xpt_run_dev_allocq\n"));
3691 CAM_DEBUG_PRINT(CAM_DEBUG_XPT
,
3692 (" qfrozen_cnt == 0x%x, entries == %d, "
3693 "openings == %d, active == %d\n",
3694 devq
->alloc_queue
.qfrozen_cnt
,
3695 devq
->alloc_queue
.entries
,
3696 devq
->alloc_openings
,
3697 devq
->alloc_active
));
3699 devq
->alloc_queue
.qfrozen_cnt
++;
3700 while ((devq
->alloc_queue
.entries
> 0)
3701 && (devq
->alloc_openings
> 0)
3702 && (devq
->alloc_queue
.qfrozen_cnt
<= 1)) {
3703 struct cam_ed_qinfo
*qinfo
;
3704 struct cam_ed
*device
;
3705 union ccb
*work_ccb
;
3706 struct cam_periph
*drv
;
3709 qinfo
= (struct cam_ed_qinfo
*)camq_remove(&devq
->alloc_queue
,
3711 device
= qinfo
->device
;
3713 CAM_DEBUG_PRINT(CAM_DEBUG_XPT
,
3714 ("running device %p\n", device
));
3716 drvq
= &device
->drvq
;
3719 if (drvq
->entries
<= 0) {
3720 panic("xpt_run_dev_allocq: "
3721 "Device on queue without any work to do");
3724 if ((work_ccb
= xpt_get_ccb(device
)) != NULL
) {
3725 devq
->alloc_openings
--;
3726 devq
->alloc_active
++;
3727 drv
= (struct cam_periph
*)camq_remove(drvq
, CAMQ_HEAD
);
3728 xpt_setup_ccb(&work_ccb
->ccb_h
, drv
->path
,
3729 drv
->pinfo
.priority
);
3730 CAM_DEBUG_PRINT(CAM_DEBUG_XPT
,
3731 ("calling periph start\n"));
3732 drv
->periph_start(drv
, work_ccb
);
3735 * Malloc failure in alloc_ccb
3738 * XXX add us to a list to be run from free_ccb
3739 * if we don't have any ccbs active on this
3740 * device queue otherwise we may never get run
3746 if (drvq
->entries
> 0) {
3747 /* We have more work. Attempt to reschedule */
3748 xpt_schedule_dev_allocq(bus
, device
);
3751 devq
->alloc_queue
.qfrozen_cnt
--;
3755 xpt_run_dev_sendq(struct cam_eb
*bus
)
3757 struct cam_devq
*devq
;
3759 if ((devq
= bus
->sim
->devq
) == NULL
) {
3760 CAM_DEBUG_PRINT(CAM_DEBUG_XPT
, ("xpt_run_dev_sendq: NULL devq\n"));
3763 CAM_DEBUG_PRINT(CAM_DEBUG_XPT
, ("xpt_run_dev_sendq\n"));
3765 devq
->send_queue
.qfrozen_cnt
++;
3766 while ((devq
->send_queue
.entries
> 0)
3767 && (devq
->send_openings
> 0)) {
3768 struct cam_ed_qinfo
*qinfo
;
3769 struct cam_ed
*device
;
3770 union ccb
*work_ccb
;
3771 struct cam_sim
*sim
;
3773 if (devq
->send_queue
.qfrozen_cnt
> 1) {
3777 qinfo
= (struct cam_ed_qinfo
*)camq_remove(&devq
->send_queue
,
3779 device
= qinfo
->device
;
3782 * If the device has been "frozen", don't attempt
3785 if (device
->qfrozen_cnt
> 0) {
3789 CAM_DEBUG_PRINT(CAM_DEBUG_XPT
,
3790 ("running device %p\n", device
));
3792 work_ccb
= cam_ccbq_peek_ccb(&device
->ccbq
, CAMQ_HEAD
);
3793 if (work_ccb
== NULL
) {
3794 kprintf("device on run queue with no ccbs???\n");
3798 if ((work_ccb
->ccb_h
.flags
& CAM_HIGH_POWER
) != 0) {
3800 lockmgr(&xsoftc
.xpt_lock
, LK_EXCLUSIVE
);
3801 if (xsoftc
.num_highpower
<= 0) {
3803 * We got a high power command, but we
3804 * don't have any available slots. Freeze
3805 * the device queue until we have a slot
3808 device
->qfrozen_cnt
++;
3809 STAILQ_INSERT_TAIL(&xsoftc
.highpowerq
,
3813 lockmgr(&xsoftc
.xpt_lock
, LK_RELEASE
);
3817 * Consume a high power slot while
3820 xsoftc
.num_highpower
--;
3822 lockmgr(&xsoftc
.xpt_lock
, LK_RELEASE
);
3824 devq
->active_dev
= device
;
3825 cam_ccbq_remove_ccb(&device
->ccbq
, work_ccb
);
3827 cam_ccbq_send_ccb(&device
->ccbq
, work_ccb
);
3829 devq
->send_openings
--;
3830 devq
->send_active
++;
3832 if (device
->ccbq
.queue
.entries
> 0)
3833 xpt_schedule_dev_sendq(bus
, device
);
3835 if (work_ccb
&& (work_ccb
->ccb_h
.flags
& CAM_DEV_QFREEZE
) != 0){
3837 * The client wants to freeze the queue
3838 * after this CCB is sent.
3840 device
->qfrozen_cnt
++;
3843 /* In Target mode, the peripheral driver knows best... */
3844 if (work_ccb
->ccb_h
.func_code
== XPT_SCSI_IO
) {
3845 if ((device
->inq_flags
& SID_CmdQue
) != 0
3846 && work_ccb
->csio
.tag_action
!= CAM_TAG_ACTION_NONE
)
3847 work_ccb
->ccb_h
.flags
|= CAM_TAG_ACTION_VALID
;
3850 * Clear this in case of a retried CCB that
3851 * failed due to a rejected tag.
3853 work_ccb
->ccb_h
.flags
&= ~CAM_TAG_ACTION_VALID
;
3857 * Device queues can be shared among multiple sim instances
3858 * that reside on different busses. Use the SIM in the queue
3859 * CCB's path, rather than the one in the bus that was passed
3860 * into this function.
3862 sim
= work_ccb
->ccb_h
.path
->bus
->sim
;
3863 (*(sim
->sim_action
))(sim
, work_ccb
);
3865 devq
->active_dev
= NULL
;
3867 devq
->send_queue
.qfrozen_cnt
--;
3871 * This function merges stuff from the slave ccb into the master ccb, while
3872 * keeping important fields in the master ccb constant.
3875 xpt_merge_ccb(union ccb
*master_ccb
, union ccb
*slave_ccb
)
3878 * Pull fields that are valid for peripheral drivers to set
3879 * into the master CCB along with the CCB "payload".
3881 master_ccb
->ccb_h
.retry_count
= slave_ccb
->ccb_h
.retry_count
;
3882 master_ccb
->ccb_h
.func_code
= slave_ccb
->ccb_h
.func_code
;
3883 master_ccb
->ccb_h
.timeout
= slave_ccb
->ccb_h
.timeout
;
3884 master_ccb
->ccb_h
.flags
= slave_ccb
->ccb_h
.flags
;
3885 bcopy(&(&slave_ccb
->ccb_h
)[1], &(&master_ccb
->ccb_h
)[1],
3886 sizeof(union ccb
) - sizeof(struct ccb_hdr
));
3890 xpt_setup_ccb(struct ccb_hdr
*ccb_h
, struct cam_path
*path
, u_int32_t priority
)
3892 CAM_DEBUG(path
, CAM_DEBUG_TRACE
, ("xpt_setup_ccb\n"));
3893 callout_init(&ccb_h
->timeout_ch
);
3894 ccb_h
->pinfo
.priority
= priority
;
3896 ccb_h
->path_id
= path
->bus
->path_id
;
3898 ccb_h
->target_id
= path
->target
->target_id
;
3900 ccb_h
->target_id
= CAM_TARGET_WILDCARD
;
3902 ccb_h
->target_lun
= path
->device
->lun_id
;
3903 ccb_h
->pinfo
.generation
= ++path
->device
->ccbq
.queue
.generation
;
3905 ccb_h
->target_lun
= CAM_TARGET_WILDCARD
;
3907 ccb_h
->pinfo
.index
= CAM_UNQUEUED_INDEX
;
3911 /* Path manipulation functions */
3913 xpt_create_path(struct cam_path
**new_path_ptr
, struct cam_periph
*perph
,
3914 path_id_t path_id
, target_id_t target_id
, lun_id_t lun_id
)
3916 struct cam_path
*path
;
3919 path
= kmalloc(sizeof(*path
), M_CAMXPT
, M_INTWAIT
);
3920 status
= xpt_compile_path(path
, perph
, path_id
, target_id
, lun_id
);
3921 if (status
!= CAM_REQ_CMP
) {
3922 kfree(path
, M_CAMXPT
);
3925 *new_path_ptr
= path
;
3930 xpt_create_path_unlocked(struct cam_path
**new_path_ptr
,
3931 struct cam_periph
*periph
, path_id_t path_id
,
3932 target_id_t target_id
, lun_id_t lun_id
)
3934 struct cam_path
*path
;
3935 struct cam_eb
*bus
= NULL
;
3937 int need_unlock
= 0;
3939 path
= (struct cam_path
*)kmalloc(sizeof(*path
), M_CAMXPT
, M_WAITOK
);
3941 if (path_id
!= CAM_BUS_WILDCARD
) {
3942 bus
= xpt_find_bus(path_id
);
3945 CAM_SIM_LOCK(bus
->sim
);
3948 status
= xpt_compile_path(path
, periph
, path_id
, target_id
, lun_id
);
3950 CAM_SIM_UNLOCK(bus
->sim
);
3951 if (status
!= CAM_REQ_CMP
) {
3952 kfree(path
, M_CAMXPT
);
3955 *new_path_ptr
= path
;
3960 xpt_compile_path(struct cam_path
*new_path
, struct cam_periph
*perph
,
3961 path_id_t path_id
, target_id_t target_id
, lun_id_t lun_id
)
3964 struct cam_et
*target
;
3965 struct cam_ed
*device
;
3968 status
= CAM_REQ_CMP
; /* Completed without error */
3969 target
= NULL
; /* Wildcarded */
3970 device
= NULL
; /* Wildcarded */
3973 * We will potentially modify the EDT, so block interrupts
3974 * that may attempt to create cam paths.
3976 bus
= xpt_find_bus(path_id
);
3978 status
= CAM_PATH_INVALID
;
3980 target
= xpt_find_target(bus
, target_id
);
3981 if (target
== NULL
) {
3983 struct cam_et
*new_target
;
3985 new_target
= xpt_alloc_target(bus
, target_id
);
3986 if (new_target
== NULL
) {
3987 status
= CAM_RESRC_UNAVAIL
;
3989 target
= new_target
;
3992 if (target
!= NULL
) {
3993 device
= xpt_find_device(target
, lun_id
);
3994 if (device
== NULL
) {
3996 struct cam_ed
*new_device
;
3998 new_device
= xpt_alloc_device(bus
,
4001 if (new_device
== NULL
) {
4002 status
= CAM_RESRC_UNAVAIL
;
4004 device
= new_device
;
4011 * Only touch the user's data if we are successful.
4013 if (status
== CAM_REQ_CMP
) {
4014 new_path
->periph
= perph
;
4015 new_path
->bus
= bus
;
4016 new_path
->target
= target
;
4017 new_path
->device
= device
;
4018 CAM_DEBUG(new_path
, CAM_DEBUG_TRACE
, ("xpt_compile_path\n"));
4021 xpt_release_device(bus
, target
, device
);
4023 xpt_release_target(bus
, target
);
4025 xpt_release_bus(bus
);
4031 xpt_release_path(struct cam_path
*path
)
4033 CAM_DEBUG(path
, CAM_DEBUG_TRACE
, ("xpt_release_path\n"));
4034 if (path
->device
!= NULL
) {
4035 xpt_release_device(path
->bus
, path
->target
, path
->device
);
4036 path
->device
= NULL
;
4038 if (path
->target
!= NULL
) {
4039 xpt_release_target(path
->bus
, path
->target
);
4040 path
->target
= NULL
;
4042 if (path
->bus
!= NULL
) {
4043 xpt_release_bus(path
->bus
);
4049 xpt_free_path(struct cam_path
*path
)
4051 CAM_DEBUG(path
, CAM_DEBUG_TRACE
, ("xpt_free_path\n"));
4052 xpt_release_path(path
);
4053 kfree(path
, M_CAMXPT
);
4058 * Return -1 for failure, 0 for exact match, 1 for match with wildcards
4059 * in path1, 2 for match with wildcards in path2.
4062 xpt_path_comp(struct cam_path
*path1
, struct cam_path
*path2
)
4066 if (path1
->bus
!= path2
->bus
) {
4067 if (path1
->bus
->path_id
== CAM_BUS_WILDCARD
)
4069 else if (path2
->bus
->path_id
== CAM_BUS_WILDCARD
)
4074 if (path1
->target
!= path2
->target
) {
4075 if (path1
->target
->target_id
== CAM_TARGET_WILDCARD
) {
4078 } else if (path2
->target
->target_id
== CAM_TARGET_WILDCARD
)
4083 if (path1
->device
!= path2
->device
) {
4084 if (path1
->device
->lun_id
== CAM_LUN_WILDCARD
) {
4087 } else if (path2
->device
->lun_id
== CAM_LUN_WILDCARD
)
4096 xpt_print_path(struct cam_path
*path
)
4100 kprintf("(nopath): ");
4102 if (path
->periph
!= NULL
)
4103 kprintf("(%s%d:", path
->periph
->periph_name
,
4104 path
->periph
->unit_number
);
4106 kprintf("(noperiph:");
4108 if (path
->bus
!= NULL
)
4109 kprintf("%s%d:%d:", path
->bus
->sim
->sim_name
,
4110 path
->bus
->sim
->unit_number
,
4111 path
->bus
->sim
->bus_id
);
4115 if (path
->target
!= NULL
)
4116 kprintf("%d:", path
->target
->target_id
);
4120 if (path
->device
!= NULL
)
4121 kprintf("%d): ", path
->device
->lun_id
);
4128 xpt_print(struct cam_path
*path
, const char *fmt
, ...)
4131 xpt_print_path(path
);
4132 __va_start(ap
, fmt
);
4138 xpt_path_string(struct cam_path
*path
, char *str
, size_t str_len
)
4142 sim_lock_assert_owned(path
->bus
->sim
->lock
);
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 sim_lock_assert_owned(path
->bus
->sim
->lock
);
4182 return(path
->bus
->path_id
);
4186 xpt_path_target_id(struct cam_path
*path
)
4188 sim_lock_assert_owned(path
->bus
->sim
->lock
);
4190 if (path
->target
!= NULL
)
4191 return (path
->target
->target_id
);
4193 return (CAM_TARGET_WILDCARD
);
4197 xpt_path_lun_id(struct cam_path
*path
)
4199 sim_lock_assert_owned(path
->bus
->sim
->lock
);
4201 if (path
->device
!= NULL
)
4202 return (path
->device
->lun_id
);
4204 return (CAM_LUN_WILDCARD
);
4208 xpt_path_sim(struct cam_path
*path
)
4210 return (path
->bus
->sim
);
4214 xpt_path_periph(struct cam_path
*path
)
4216 sim_lock_assert_owned(path
->bus
->sim
->lock
);
4218 return (path
->periph
);
4222 xpt_path_serialno(struct cam_path
*path
)
4224 return (path
->device
->serial_num
);
4228 * Release a CAM control block for the caller. Remit the cost of the structure
4229 * to the device referenced by the path. If the this device had no 'credits'
4230 * and peripheral drivers have registered async callbacks for this notification
4234 xpt_release_ccb(union ccb
*free_ccb
)
4236 struct cam_path
*path
;
4237 struct cam_ed
*device
;
4239 struct cam_sim
*sim
;
4241 CAM_DEBUG_PRINT(CAM_DEBUG_XPT
, ("xpt_release_ccb\n"));
4242 path
= free_ccb
->ccb_h
.path
;
4243 device
= path
->device
;
4247 sim_lock_assert_owned(sim
->lock
);
4249 cam_ccbq_release_opening(&device
->ccbq
);
4250 if (sim
->ccb_count
> sim
->max_ccbs
) {
4251 xpt_free_ccb(free_ccb
);
4253 } else if (sim
== &cam_dead_sim
) {
4254 xpt_free_ccb(free_ccb
);
4256 SLIST_INSERT_HEAD(&sim
->ccb_freeq
, &free_ccb
->ccb_h
,
4259 if (sim
->devq
== NULL
) {
4262 sim
->devq
->alloc_openings
++;
4263 sim
->devq
->alloc_active
--;
4264 /* XXX Turn this into an inline function - xpt_run_device?? */
4265 if ((device_is_alloc_queued(device
) == 0)
4266 && (device
->drvq
.entries
> 0)) {
4267 xpt_schedule_dev_allocq(bus
, device
);
4269 if (dev_allocq_is_runnable(sim
->devq
))
4270 xpt_run_dev_allocq(bus
);
4273 /* Functions accessed by SIM drivers */
4276 * A sim structure, listing the SIM entry points and instance
4277 * identification info is passed to xpt_bus_register to hook the SIM
4278 * into the CAM framework. xpt_bus_register creates a cam_eb entry
4279 * for this new bus and places it in the array of busses and assigns
4280 * it a path_id. The path_id may be influenced by "hard wiring"
4281 * information specified by the user. Once interrupt services are
4282 * availible, the bus will be probed.
4285 xpt_bus_register(struct cam_sim
*sim
, u_int32_t bus
)
4287 struct cam_eb
*new_bus
;
4288 struct cam_eb
*old_bus
;
4289 struct ccb_pathinq cpi
;
4291 sim_lock_assert_owned(sim
->lock
);
4294 new_bus
= kmalloc(sizeof(*new_bus
), M_CAMXPT
, M_INTWAIT
);
4296 if (strcmp(sim
->sim_name
, "xpt") != 0) {
4298 xptpathid(sim
->sim_name
, sim
->unit_number
, sim
->bus_id
);
4301 TAILQ_INIT(&new_bus
->et_entries
);
4302 new_bus
->path_id
= sim
->path_id
;
4305 timevalclear(&new_bus
->last_reset
);
4307 new_bus
->refcount
= 1; /* Held until a bus_deregister event */
4308 new_bus
->generation
= 0;
4309 new_bus
->counted_to_config
= 0;
4310 lockmgr(&xsoftc
.xpt_topo_lock
, LK_EXCLUSIVE
);
4311 old_bus
= TAILQ_FIRST(&xsoftc
.xpt_busses
);
4312 while (old_bus
!= NULL
4313 && old_bus
->path_id
< new_bus
->path_id
)
4314 old_bus
= TAILQ_NEXT(old_bus
, links
);
4315 if (old_bus
!= NULL
)
4316 TAILQ_INSERT_BEFORE(old_bus
, new_bus
, links
);
4318 TAILQ_INSERT_TAIL(&xsoftc
.xpt_busses
, new_bus
, links
);
4319 xsoftc
.bus_generation
++;
4320 lockmgr(&xsoftc
.xpt_topo_lock
, LK_RELEASE
);
4322 /* Notify interested parties */
4323 if (sim
->path_id
!= CAM_XPT_PATH_ID
) {
4324 struct cam_path path
;
4326 xpt_compile_path(&path
, /*periph*/NULL
, sim
->path_id
,
4327 CAM_TARGET_WILDCARD
, CAM_LUN_WILDCARD
);
4328 xpt_setup_ccb(&cpi
.ccb_h
, &path
, /*priority*/1);
4329 cpi
.ccb_h
.func_code
= XPT_PATH_INQ
;
4330 xpt_action((union ccb
*)&cpi
);
4331 xpt_async(AC_PATH_REGISTERED
, &path
, &cpi
);
4332 xpt_release_path(&path
);
4334 return (CAM_SUCCESS
);
4338 * Deregister a bus. We must clean out all transactions pending on the bus.
4339 * This routine is typically called prior to cam_sim_free() (e.g. see
4340 * dev/usbmisc/umass/umass.c)
4343 xpt_bus_deregister(path_id_t pathid
)
4345 struct cam_path bus_path
;
4346 struct cam_et
*target
;
4347 struct cam_ed
*device
;
4348 struct cam_ed_qinfo
*qinfo
;
4349 struct cam_devq
*devq
;
4350 struct cam_periph
*periph
;
4351 struct cam_sim
*ccbsim
;
4352 union ccb
*work_ccb
;
4356 status
= xpt_compile_path(&bus_path
, NULL
, pathid
,
4357 CAM_TARGET_WILDCARD
, CAM_LUN_WILDCARD
);
4358 if (status
!= CAM_REQ_CMP
)
4362 * This should clear out all pending requests and timeouts, but
4363 * the ccb's may be queued to a software interrupt.
4365 * XXX AC_LOST_DEVICE does not precisely abort the pending requests,
4366 * and it really ought to.
4368 xpt_async(AC_LOST_DEVICE
, &bus_path
, NULL
);
4369 xpt_async(AC_PATH_DEREGISTERED
, &bus_path
, NULL
);
4372 * Mark the SIM as having been deregistered. This prevents
4373 * certain operations from re-queueing to it, stops new devices
4374 * from being added, etc.
4376 devq
= bus_path
.bus
->sim
->devq
;
4377 ccbsim
= bus_path
.bus
->sim
;
4378 ccbsim
->flags
|= CAM_SIM_DEREGISTERED
;
4382 * Execute any pending operations now.
4384 while ((qinfo
= (struct cam_ed_qinfo
*)camq_remove(&devq
->send_queue
,
4385 CAMQ_HEAD
)) != NULL
||
4386 (qinfo
= (struct cam_ed_qinfo
*)camq_remove(&devq
->alloc_queue
,
4387 CAMQ_HEAD
)) != NULL
) {
4389 device
= qinfo
->device
;
4390 work_ccb
= cam_ccbq_peek_ccb(&device
->ccbq
, CAMQ_HEAD
);
4391 if (work_ccb
!= NULL
) {
4392 devq
->active_dev
= device
;
4393 cam_ccbq_remove_ccb(&device
->ccbq
, work_ccb
);
4394 cam_ccbq_send_ccb(&device
->ccbq
, work_ccb
);
4395 (*(ccbsim
->sim_action
))(ccbsim
, work_ccb
);
4398 periph
= (struct cam_periph
*)camq_remove(&device
->drvq
,
4401 xpt_schedule(periph
, periph
->pinfo
.priority
);
4402 } while (work_ccb
!= NULL
|| periph
!= NULL
);
4406 * Make sure all completed CCBs are processed.
4408 while (!TAILQ_EMPTY(&ccbsim
->sim_doneq
)) {
4409 camisr_runqueue(ccbsim
);
4413 * Check for requeues, reissues asyncs if necessary
4415 if (CAMQ_GET_HEAD(&devq
->send_queue
))
4416 kprintf("camq: devq send_queue still in use (%d entries)\n",
4417 devq
->send_queue
.entries
);
4418 if (CAMQ_GET_HEAD(&devq
->alloc_queue
))
4419 kprintf("camq: devq alloc_queue still in use (%d entries)\n",
4420 devq
->alloc_queue
.entries
);
4421 if (CAMQ_GET_HEAD(&devq
->send_queue
) ||
4422 CAMQ_GET_HEAD(&devq
->alloc_queue
)) {
4423 if (++retries
< 5) {
4424 xpt_async(AC_LOST_DEVICE
, &bus_path
, NULL
);
4425 xpt_async(AC_PATH_DEREGISTERED
, &bus_path
, NULL
);
4431 * Retarget the bus and all cached sim pointers to dead_sim.
4433 * Various CAM subsystems may be holding on to targets, devices,
4434 * and/or peripherals and may attempt to use the sim pointer cached
4435 * in some of these structures during close.
4437 bus_path
.bus
->sim
= &cam_dead_sim
;
4438 TAILQ_FOREACH(target
, &bus_path
.bus
->et_entries
, links
) {
4439 TAILQ_FOREACH(device
, &target
->ed_entries
, links
) {
4440 device
->sim
= &cam_dead_sim
;
4441 SLIST_FOREACH(periph
, &device
->periphs
, periph_links
) {
4442 periph
->sim
= &cam_dead_sim
;
4448 * Repeat the async's for the benefit of any new devices, such as
4449 * might be created from completed probes. Any new device
4450 * ops will run on dead_sim.
4452 * XXX There are probably races :-(
4454 CAM_SIM_LOCK(&cam_dead_sim
);
4455 xpt_async(AC_LOST_DEVICE
, &bus_path
, NULL
);
4456 xpt_async(AC_PATH_DEREGISTERED
, &bus_path
, NULL
);
4457 CAM_SIM_UNLOCK(&cam_dead_sim
);
4459 /* Release the reference count held while registered. */
4460 xpt_release_bus(bus_path
.bus
);
4461 xpt_release_path(&bus_path
);
4463 /* Release the ref we got when the bus was registered */
4464 cam_sim_release(ccbsim
, 0);
4466 return (CAM_REQ_CMP
);
4470 xptnextfreepathid(void)
4477 lockmgr(&xsoftc
.xpt_topo_lock
, LK_EXCLUSIVE
);
4478 bus
= TAILQ_FIRST(&xsoftc
.xpt_busses
);
4480 /* Find an unoccupied pathid */
4481 while (bus
!= NULL
&& bus
->path_id
<= pathid
) {
4482 if (bus
->path_id
== pathid
)
4484 bus
= TAILQ_NEXT(bus
, links
);
4486 lockmgr(&xsoftc
.xpt_topo_lock
, LK_RELEASE
);
4489 * Ensure that this pathid is not reserved for
4490 * a bus that may be registered in the future.
4492 if (resource_string_value("scbus", pathid
, "at", &strval
) == 0) {
4494 /* Start the search over */
4495 lockmgr(&xsoftc
.xpt_topo_lock
, LK_EXCLUSIVE
);
4502 xptpathid(const char *sim_name
, int sim_unit
, int sim_bus
)
4508 pathid
= CAM_XPT_PATH_ID
;
4509 ksnprintf(buf
, sizeof(buf
), "%s%d", sim_name
, sim_unit
);
4511 while ((i
= resource_query_string(i
, "at", buf
)) != -1) {
4512 if (strcmp(resource_query_name(i
), "scbus")) {
4513 /* Avoid a bit of foot shooting. */
4516 dunit
= resource_query_unit(i
);
4517 if (dunit
< 0) /* unwired?! */
4519 if (resource_int_value("scbus", dunit
, "bus", &val
) == 0) {
4520 if (sim_bus
== val
) {
4524 } else if (sim_bus
== 0) {
4525 /* Unspecified matches bus 0 */
4529 kprintf("Ambiguous scbus configuration for %s%d "
4530 "bus %d, cannot wire down. The kernel "
4531 "config entry for scbus%d should "
4532 "specify a controller bus.\n"
4533 "Scbus will be assigned dynamically.\n",
4534 sim_name
, sim_unit
, sim_bus
, dunit
);
4539 if (pathid
== CAM_XPT_PATH_ID
)
4540 pathid
= xptnextfreepathid();
4545 xpt_async(u_int32_t async_code
, struct cam_path
*path
, void *async_arg
)
4548 struct cam_et
*target
, *next_target
;
4549 struct cam_ed
*device
, *next_device
;
4551 sim_lock_assert_owned(path
->bus
->sim
->lock
);
4553 CAM_DEBUG(path
, CAM_DEBUG_TRACE
, ("xpt_async\n"));
4556 * Most async events come from a CAM interrupt context. In
4557 * a few cases, the error recovery code at the peripheral layer,
4558 * which may run from our SWI or a process context, may signal
4559 * deferred events with a call to xpt_async.
4564 if (async_code
== AC_BUS_RESET
) {
4565 /* Update our notion of when the last reset occurred */
4566 microuptime(&bus
->last_reset
);
4569 for (target
= TAILQ_FIRST(&bus
->et_entries
);
4571 target
= next_target
) {
4573 next_target
= TAILQ_NEXT(target
, links
);
4575 if (path
->target
!= target
4576 && path
->target
->target_id
!= CAM_TARGET_WILDCARD
4577 && target
->target_id
!= CAM_TARGET_WILDCARD
)
4580 if (async_code
== AC_SENT_BDR
) {
4581 /* Update our notion of when the last reset occurred */
4582 microuptime(&path
->target
->last_reset
);
4585 for (device
= TAILQ_FIRST(&target
->ed_entries
);
4587 device
= next_device
) {
4589 next_device
= TAILQ_NEXT(device
, links
);
4591 if (path
->device
!= device
4592 && path
->device
->lun_id
!= CAM_LUN_WILDCARD
4593 && device
->lun_id
!= CAM_LUN_WILDCARD
)
4596 xpt_dev_async(async_code
, bus
, target
,
4599 xpt_async_bcast(&device
->asyncs
, async_code
,
4605 * If this wasn't a fully wildcarded async, tell all
4606 * clients that want all async events.
4608 if (bus
!= xpt_periph
->path
->bus
)
4609 xpt_async_bcast(&xpt_periph
->path
->device
->asyncs
, async_code
,
4614 xpt_async_bcast(struct async_list
*async_head
,
4615 u_int32_t async_code
,
4616 struct cam_path
*path
, void *async_arg
)
4618 struct async_node
*cur_entry
;
4620 cur_entry
= SLIST_FIRST(async_head
);
4621 while (cur_entry
!= NULL
) {
4622 struct async_node
*next_entry
;
4624 * Grab the next list entry before we call the current
4625 * entry's callback. This is because the callback function
4626 * can delete its async callback entry.
4628 next_entry
= SLIST_NEXT(cur_entry
, links
);
4629 if ((cur_entry
->event_enable
& async_code
) != 0)
4630 cur_entry
->callback(cur_entry
->callback_arg
,
4633 cur_entry
= next_entry
;
4638 * Handle any per-device event notifications that require action by the XPT.
4641 xpt_dev_async(u_int32_t async_code
, struct cam_eb
*bus
, struct cam_et
*target
,
4642 struct cam_ed
*device
, void *async_arg
)
4645 struct cam_path newpath
;
4648 * We only need to handle events for real devices.
4650 if (target
->target_id
== CAM_TARGET_WILDCARD
4651 || device
->lun_id
== CAM_LUN_WILDCARD
)
4655 * We need our own path with wildcards expanded to
4656 * handle certain types of events.
4658 if ((async_code
== AC_SENT_BDR
)
4659 || (async_code
== AC_BUS_RESET
)
4660 || (async_code
== AC_INQ_CHANGED
))
4661 status
= xpt_compile_path(&newpath
, NULL
,
4666 status
= CAM_REQ_CMP_ERR
;
4668 if (status
== CAM_REQ_CMP
) {
4671 * Allow transfer negotiation to occur in a
4672 * tag free environment.
4674 if (async_code
== AC_SENT_BDR
4675 || async_code
== AC_BUS_RESET
)
4676 xpt_toggle_tags(&newpath
);
4678 if (async_code
== AC_INQ_CHANGED
) {
4680 * We've sent a start unit command, or
4681 * something similar to a device that
4682 * may have caused its inquiry data to
4683 * change. So we re-scan the device to
4684 * refresh the inquiry data for it.
4686 xpt_scan_lun(newpath
.periph
, &newpath
,
4687 CAM_EXPECT_INQ_CHANGE
, NULL
);
4689 xpt_release_path(&newpath
);
4690 } else if (async_code
== AC_LOST_DEVICE
) {
4692 * When we lose a device the device may be about to detach
4693 * the sim, we have to clear out all pending timeouts and
4694 * requests before that happens.
4696 * This typically happens most often with USB/UMASS devices.
4698 * XXX it would be nice if we could abort the requests
4699 * pertaining to the device.
4701 xpt_release_devq_device(device
, /*count*/1, /*run_queue*/TRUE
);
4702 if ((device
->flags
& CAM_DEV_UNCONFIGURED
) == 0) {
4703 device
->flags
|= CAM_DEV_UNCONFIGURED
;
4704 xpt_release_device(bus
, target
, device
);
4706 } else if (async_code
== AC_TRANSFER_NEG
) {
4707 struct ccb_trans_settings
*settings
;
4709 settings
= (struct ccb_trans_settings
*)async_arg
;
4710 xpt_set_transfer_settings(settings
, device
,
4711 /*async_update*/TRUE
);
4716 xpt_freeze_devq(struct cam_path
*path
, u_int count
)
4718 struct ccb_hdr
*ccbh
;
4720 sim_lock_assert_owned(path
->bus
->sim
->lock
);
4722 path
->device
->qfrozen_cnt
+= count
;
4725 * Mark the last CCB in the queue as needing
4726 * to be requeued if the driver hasn't
4727 * changed it's state yet. This fixes a race
4728 * where a ccb is just about to be queued to
4729 * a controller driver when it's interrupt routine
4730 * freezes the queue. To completly close the
4731 * hole, controller drives must check to see
4732 * if a ccb's status is still CAM_REQ_INPROG
4733 * just before they queue
4734 * the CCB. See ahc_action/ahc_freeze_devq for
4737 ccbh
= TAILQ_LAST(&path
->device
->ccbq
.active_ccbs
, ccb_hdr_tailq
);
4738 if (ccbh
&& ccbh
->status
== CAM_REQ_INPROG
)
4739 ccbh
->status
= CAM_REQUEUE_REQ
;
4740 return (path
->device
->qfrozen_cnt
);
4744 xpt_freeze_simq(struct cam_sim
*sim
, u_int count
)
4746 sim_lock_assert_owned(sim
->lock
);
4748 if (sim
->devq
== NULL
)
4750 sim
->devq
->send_queue
.qfrozen_cnt
+= count
;
4751 if (sim
->devq
->active_dev
!= NULL
) {
4752 struct ccb_hdr
*ccbh
;
4754 ccbh
= TAILQ_LAST(&sim
->devq
->active_dev
->ccbq
.active_ccbs
,
4756 if (ccbh
&& ccbh
->status
== CAM_REQ_INPROG
)
4757 ccbh
->status
= CAM_REQUEUE_REQ
;
4759 return (sim
->devq
->send_queue
.qfrozen_cnt
);
4763 * Release the device queue after a timeout has expired, typically used to
4764 * introduce a delay before retrying after an I/O error or other problem.
4767 xpt_release_devq_timeout(void *arg
)
4769 struct cam_ed
*device
;
4771 device
= (struct cam_ed
*)arg
;
4772 CAM_SIM_LOCK(device
->sim
);
4773 xpt_release_devq_device(device
, /*count*/1, /*run_queue*/TRUE
);
4774 CAM_SIM_UNLOCK(device
->sim
);
4778 xpt_release_devq(struct cam_path
*path
, u_int count
, int run_queue
)
4780 sim_lock_assert_owned(path
->bus
->sim
->lock
);
4782 xpt_release_devq_device(path
->device
, count
, run_queue
);
4786 xpt_release_devq_device(struct cam_ed
*dev
, u_int count
, int run_queue
)
4792 if (dev
->qfrozen_cnt
> 0) {
4794 count
= (count
> dev
->qfrozen_cnt
) ? dev
->qfrozen_cnt
: count
;
4795 dev
->qfrozen_cnt
-= count
;
4796 if (dev
->qfrozen_cnt
== 0) {
4799 * No longer need to wait for a successful
4800 * command completion.
4802 dev
->flags
&= ~CAM_DEV_REL_ON_COMPLETE
;
4805 * Remove any timeouts that might be scheduled
4806 * to release this queue.
4808 if ((dev
->flags
& CAM_DEV_REL_TIMEOUT_PENDING
) != 0) {
4809 callout_stop(&dev
->callout
);
4810 dev
->flags
&= ~CAM_DEV_REL_TIMEOUT_PENDING
;
4814 * Now that we are unfrozen schedule the
4815 * device so any pending transactions are
4818 if ((dev
->ccbq
.queue
.entries
> 0)
4819 && (xpt_schedule_dev_sendq(dev
->target
->bus
, dev
))
4820 && (run_queue
!= 0)) {
4826 xpt_run_dev_sendq(dev
->target
->bus
);
4830 xpt_release_simq(struct cam_sim
*sim
, int run_queue
)
4834 sim_lock_assert_owned(sim
->lock
);
4836 if (sim
->devq
== NULL
)
4839 sendq
= &(sim
->devq
->send_queue
);
4840 if (sendq
->qfrozen_cnt
> 0) {
4841 sendq
->qfrozen_cnt
--;
4842 if (sendq
->qfrozen_cnt
== 0) {
4846 * If there is a timeout scheduled to release this
4847 * sim queue, remove it. The queue frozen count is
4850 if ((sim
->flags
& CAM_SIM_REL_TIMEOUT_PENDING
) != 0){
4851 callout_stop(&sim
->callout
);
4852 sim
->flags
&= ~CAM_SIM_REL_TIMEOUT_PENDING
;
4854 bus
= xpt_find_bus(sim
->path_id
);
4858 * Now that we are unfrozen run the send queue.
4860 xpt_run_dev_sendq(bus
);
4862 xpt_release_bus(bus
);
4868 xpt_done(union ccb
*done_ccb
)
4870 struct cam_sim
*sim
;
4872 CAM_DEBUG(done_ccb
->ccb_h
.path
, CAM_DEBUG_TRACE
, ("xpt_done\n"));
4873 if ((done_ccb
->ccb_h
.func_code
& XPT_FC_QUEUED
) != 0) {
4875 * Queue up the request for handling by our SWI handler
4876 * any of the "non-immediate" type of ccbs.
4878 sim
= done_ccb
->ccb_h
.path
->bus
->sim
;
4879 switch (done_ccb
->ccb_h
.path
->periph
->type
) {
4880 case CAM_PERIPH_BIO
:
4881 spin_lock(&sim
->sim_spin
);
4882 TAILQ_INSERT_TAIL(&sim
->sim_doneq
, &done_ccb
->ccb_h
,
4884 done_ccb
->ccb_h
.pinfo
.index
= CAM_DONEQ_INDEX
;
4885 spin_unlock(&sim
->sim_spin
);
4886 if ((sim
->flags
& CAM_SIM_ON_DONEQ
) == 0) {
4887 spin_lock(&cam_simq_spin
);
4888 if ((sim
->flags
& CAM_SIM_ON_DONEQ
) == 0) {
4889 TAILQ_INSERT_TAIL(&cam_simq
, sim
,
4891 sim
->flags
|= CAM_SIM_ON_DONEQ
;
4893 spin_unlock(&cam_simq_spin
);
4895 if ((done_ccb
->ccb_h
.flags
& CAM_POLLED
) == 0)
4899 panic("unknown periph type %d",
4900 done_ccb
->ccb_h
.path
->periph
->type
);
4910 new_ccb
= kmalloc(sizeof(*new_ccb
), M_CAMXPT
, M_INTWAIT
| M_ZERO
);
4915 xpt_free_ccb(union ccb
*free_ccb
)
4917 kfree(free_ccb
, M_CAMXPT
);
4922 /* Private XPT functions */
4925 * Get a CAM control block for the caller. Charge the structure to the device
4926 * referenced by the path. If the this device has no 'credits' then the
4927 * device already has the maximum number of outstanding operations under way
4928 * and we return NULL. If we don't have sufficient resources to allocate more
4929 * ccbs, we also return NULL.
4932 xpt_get_ccb(struct cam_ed
*device
)
4935 struct cam_sim
*sim
;
4938 if ((new_ccb
= (union ccb
*)SLIST_FIRST(&sim
->ccb_freeq
)) == NULL
) {
4939 new_ccb
= xpt_alloc_ccb();
4940 if ((sim
->flags
& CAM_SIM_MPSAFE
) == 0)
4941 callout_init(&new_ccb
->ccb_h
.timeout_ch
);
4942 SLIST_INSERT_HEAD(&sim
->ccb_freeq
, &new_ccb
->ccb_h
,
4946 cam_ccbq_take_opening(&device
->ccbq
);
4947 SLIST_REMOVE_HEAD(&sim
->ccb_freeq
, xpt_links
.sle
);
4952 xpt_release_bus(struct cam_eb
*bus
)
4955 if ((--bus
->refcount
== 0)
4956 && (TAILQ_FIRST(&bus
->et_entries
) == NULL
)) {
4957 lockmgr(&xsoftc
.xpt_topo_lock
, LK_EXCLUSIVE
);
4958 TAILQ_REMOVE(&xsoftc
.xpt_busses
, bus
, links
);
4959 xsoftc
.bus_generation
++;
4960 lockmgr(&xsoftc
.xpt_topo_lock
, LK_RELEASE
);
4961 kfree(bus
, M_CAMXPT
);
4965 static struct cam_et
*
4966 xpt_alloc_target(struct cam_eb
*bus
, target_id_t target_id
)
4968 struct cam_et
*target
;
4969 struct cam_et
*cur_target
;
4971 target
= kmalloc(sizeof(*target
), M_CAMXPT
, M_INTWAIT
);
4973 TAILQ_INIT(&target
->ed_entries
);
4975 target
->target_id
= target_id
;
4976 target
->refcount
= 1;
4977 target
->generation
= 0;
4978 timevalclear(&target
->last_reset
);
4980 * Hold a reference to our parent bus so it
4981 * will not go away before we do.
4985 /* Insertion sort into our bus's target list */
4986 cur_target
= TAILQ_FIRST(&bus
->et_entries
);
4987 while (cur_target
!= NULL
&& cur_target
->target_id
< target_id
)
4988 cur_target
= TAILQ_NEXT(cur_target
, links
);
4990 if (cur_target
!= NULL
) {
4991 TAILQ_INSERT_BEFORE(cur_target
, target
, links
);
4993 TAILQ_INSERT_TAIL(&bus
->et_entries
, target
, links
);
5000 xpt_release_target(struct cam_eb
*bus
, struct cam_et
*target
)
5002 if (target
->refcount
== 1) {
5003 KKASSERT(TAILQ_FIRST(&target
->ed_entries
) == NULL
);
5004 TAILQ_REMOVE(&bus
->et_entries
, target
, links
);
5006 xpt_release_bus(bus
);
5007 KKASSERT(target
->refcount
== 1);
5008 kfree(target
, M_CAMXPT
);
5014 static struct cam_ed
*
5015 xpt_alloc_device(struct cam_eb
*bus
, struct cam_et
*target
, lun_id_t lun_id
)
5017 struct cam_path path
;
5018 struct cam_ed
*device
;
5019 struct cam_devq
*devq
;
5023 * Disallow new devices while trying to deregister a sim
5025 if (bus
->sim
->flags
& CAM_SIM_DEREGISTERED
)
5029 * Make space for us in the device queue on our bus
5031 devq
= bus
->sim
->devq
;
5034 status
= cam_devq_resize(devq
, devq
->alloc_queue
.array_size
+ 1);
5036 if (status
!= CAM_REQ_CMP
) {
5039 device
= kmalloc(sizeof(*device
), M_CAMXPT
, M_INTWAIT
);
5042 if (device
!= NULL
) {
5043 struct cam_ed
*cur_device
;
5045 cam_init_pinfo(&device
->alloc_ccb_entry
.pinfo
);
5046 device
->alloc_ccb_entry
.device
= device
;
5047 cam_init_pinfo(&device
->send_ccb_entry
.pinfo
);
5048 device
->send_ccb_entry
.device
= device
;
5049 device
->target
= target
;
5050 device
->lun_id
= lun_id
;
5051 device
->sim
= bus
->sim
;
5052 /* Initialize our queues */
5053 if (camq_init(&device
->drvq
, 0) != 0) {
5054 kfree(device
, M_CAMXPT
);
5057 if (cam_ccbq_init(&device
->ccbq
,
5058 bus
->sim
->max_dev_openings
) != 0) {
5059 camq_fini(&device
->drvq
);
5060 kfree(device
, M_CAMXPT
);
5063 SLIST_INIT(&device
->asyncs
);
5064 SLIST_INIT(&device
->periphs
);
5065 device
->generation
= 0;
5066 device
->owner
= NULL
;
5068 * Take the default quirk entry until we have inquiry
5069 * data and can determine a better quirk to use.
5071 device
->quirk
= &xpt_quirk_table
[xpt_quirk_table_size
- 1];
5072 bzero(&device
->inq_data
, sizeof(device
->inq_data
));
5073 device
->inq_flags
= 0;
5074 device
->queue_flags
= 0;
5075 device
->serial_num
= NULL
;
5076 device
->serial_num_len
= 0;
5077 device
->qfrozen_cnt
= 0;
5078 device
->flags
= CAM_DEV_UNCONFIGURED
;
5079 device
->tag_delay_count
= 0;
5080 device
->tag_saved_openings
= 0;
5081 device
->refcount
= 1;
5082 callout_init(&device
->callout
);
5085 * Hold a reference to our parent target so it
5086 * will not go away before we do.
5091 * XXX should be limited by number of CCBs this bus can
5094 bus
->sim
->max_ccbs
+= device
->ccbq
.devq_openings
;
5095 /* Insertion sort into our target's device list */
5096 cur_device
= TAILQ_FIRST(&target
->ed_entries
);
5097 while (cur_device
!= NULL
&& cur_device
->lun_id
< lun_id
)
5098 cur_device
= TAILQ_NEXT(cur_device
, links
);
5099 if (cur_device
!= NULL
) {
5100 TAILQ_INSERT_BEFORE(cur_device
, device
, links
);
5102 TAILQ_INSERT_TAIL(&target
->ed_entries
, device
, links
);
5104 target
->generation
++;
5105 if (lun_id
!= CAM_LUN_WILDCARD
) {
5106 xpt_compile_path(&path
,
5111 xpt_devise_transport(&path
);
5112 xpt_release_path(&path
);
5119 xpt_reference_device(struct cam_ed
*device
)
5125 xpt_release_device(struct cam_eb
*bus
, struct cam_et
*target
,
5126 struct cam_ed
*device
)
5128 struct cam_devq
*devq
;
5130 if (device
->refcount
== 1) {
5131 KKASSERT(device
->flags
& CAM_DEV_UNCONFIGURED
);
5133 if (device
->alloc_ccb_entry
.pinfo
.index
!= CAM_UNQUEUED_INDEX
5134 || device
->send_ccb_entry
.pinfo
.index
!= CAM_UNQUEUED_INDEX
)
5135 panic("Removing device while still queued for ccbs");
5137 if ((device
->flags
& CAM_DEV_REL_TIMEOUT_PENDING
) != 0) {
5138 device
->flags
&= ~CAM_DEV_REL_TIMEOUT_PENDING
;
5139 callout_stop(&device
->callout
);
5142 TAILQ_REMOVE(&target
->ed_entries
, device
,links
);
5143 target
->generation
++;
5144 bus
->sim
->max_ccbs
-= device
->ccbq
.devq_openings
;
5145 if ((devq
= bus
->sim
->devq
) != NULL
) {
5146 /* Release our slot in the devq */
5147 cam_devq_resize(devq
, devq
->alloc_queue
.array_size
- 1);
5149 camq_fini(&device
->drvq
);
5150 camq_fini(&device
->ccbq
.queue
);
5151 xpt_release_target(bus
, target
);
5152 KKASSERT(device
->refcount
== 1);
5153 kfree(device
, M_CAMXPT
);
5160 xpt_dev_ccbq_resize(struct cam_path
*path
, int newopenings
)
5168 diff
= newopenings
- (dev
->ccbq
.dev_active
+ dev
->ccbq
.dev_openings
);
5169 result
= cam_ccbq_resize(&dev
->ccbq
, newopenings
);
5170 if (result
== CAM_REQ_CMP
&& (diff
< 0)) {
5171 dev
->flags
|= CAM_DEV_RESIZE_QUEUE_NEEDED
;
5173 if ((dev
->flags
& CAM_DEV_TAG_AFTER_COUNT
) != 0
5174 || (dev
->inq_flags
& SID_CmdQue
) != 0)
5175 dev
->tag_saved_openings
= newopenings
;
5176 /* Adjust the global limit */
5177 dev
->sim
->max_ccbs
+= diff
;
5181 static struct cam_eb
*
5182 xpt_find_bus(path_id_t path_id
)
5186 lockmgr(&xsoftc
.xpt_topo_lock
, LK_EXCLUSIVE
);
5187 TAILQ_FOREACH(bus
, &xsoftc
.xpt_busses
, links
) {
5188 if (bus
->path_id
== path_id
) {
5193 lockmgr(&xsoftc
.xpt_topo_lock
, LK_RELEASE
);
5197 static struct cam_et
*
5198 xpt_find_target(struct cam_eb
*bus
, target_id_t target_id
)
5200 struct cam_et
*target
;
5202 TAILQ_FOREACH(target
, &bus
->et_entries
, links
) {
5203 if (target
->target_id
== target_id
) {
5211 static struct cam_ed
*
5212 xpt_find_device(struct cam_et
*target
, lun_id_t lun_id
)
5214 struct cam_ed
*device
;
5216 TAILQ_FOREACH(device
, &target
->ed_entries
, links
) {
5217 if (device
->lun_id
== lun_id
) {
5226 union ccb
*request_ccb
;
5227 struct ccb_pathinq
*cpi
;
5229 } xpt_scan_bus_info
;
5232 * To start a scan, request_ccb is an XPT_SCAN_BUS ccb.
5233 * As the scan progresses, xpt_scan_bus is used as the
5234 * callback on completion function.
5237 xpt_scan_bus(struct cam_periph
*periph
, union ccb
*request_ccb
)
5239 CAM_DEBUG(request_ccb
->ccb_h
.path
, CAM_DEBUG_TRACE
,
5240 ("xpt_scan_bus\n"));
5241 switch (request_ccb
->ccb_h
.func_code
) {
5244 xpt_scan_bus_info
*scan_info
;
5245 union ccb
*work_ccb
;
5246 struct cam_path
*path
;
5251 /* Find out the characteristics of the bus */
5252 work_ccb
= xpt_alloc_ccb();
5253 xpt_setup_ccb(&work_ccb
->ccb_h
, request_ccb
->ccb_h
.path
,
5254 request_ccb
->ccb_h
.pinfo
.priority
);
5255 work_ccb
->ccb_h
.func_code
= XPT_PATH_INQ
;
5256 xpt_action(work_ccb
);
5257 if (work_ccb
->ccb_h
.status
!= CAM_REQ_CMP
) {
5258 request_ccb
->ccb_h
.status
= work_ccb
->ccb_h
.status
;
5259 xpt_free_ccb(work_ccb
);
5260 xpt_done(request_ccb
);
5264 if ((work_ccb
->cpi
.hba_misc
& PIM_NOINITIATOR
) != 0) {
5266 * Can't scan the bus on an adapter that
5267 * cannot perform the initiator role.
5269 request_ccb
->ccb_h
.status
= CAM_REQ_CMP
;
5270 xpt_free_ccb(work_ccb
);
5271 xpt_done(request_ccb
);
5275 /* Save some state for use while we probe for devices */
5276 scan_info
= (xpt_scan_bus_info
*)
5277 kmalloc(sizeof(xpt_scan_bus_info
), M_CAMXPT
, M_INTWAIT
);
5278 scan_info
->request_ccb
= request_ccb
;
5279 scan_info
->cpi
= &work_ccb
->cpi
;
5281 /* Cache on our stack so we can work asynchronously */
5282 max_target
= scan_info
->cpi
->max_target
;
5283 initiator_id
= scan_info
->cpi
->initiator_id
;
5287 * We can scan all targets in parallel, or do it sequentially.
5289 if (scan_info
->cpi
->hba_misc
& PIM_SEQSCAN
) {
5291 scan_info
->counter
= 0;
5293 scan_info
->counter
= scan_info
->cpi
->max_target
+ 1;
5294 if (scan_info
->cpi
->initiator_id
< scan_info
->counter
) {
5295 scan_info
->counter
--;
5299 for (i
= 0; i
<= max_target
; i
++) {
5301 if (i
== initiator_id
)
5304 status
= xpt_create_path(&path
, xpt_periph
,
5305 request_ccb
->ccb_h
.path_id
,
5307 if (status
!= CAM_REQ_CMP
) {
5308 kprintf("xpt_scan_bus: xpt_create_path failed"
5309 " with status %#x, bus scan halted\n",
5311 kfree(scan_info
, M_CAMXPT
);
5312 request_ccb
->ccb_h
.status
= status
;
5313 xpt_free_ccb(work_ccb
);
5314 xpt_done(request_ccb
);
5317 work_ccb
= xpt_alloc_ccb();
5318 xpt_setup_ccb(&work_ccb
->ccb_h
, path
,
5319 request_ccb
->ccb_h
.pinfo
.priority
);
5320 work_ccb
->ccb_h
.func_code
= XPT_SCAN_LUN
;
5321 work_ccb
->ccb_h
.cbfcnp
= xpt_scan_bus
;
5322 work_ccb
->ccb_h
.ppriv_ptr0
= scan_info
;
5323 work_ccb
->crcn
.flags
= request_ccb
->crcn
.flags
;
5324 xpt_action(work_ccb
);
5331 struct cam_path
*path
;
5332 xpt_scan_bus_info
*scan_info
;
5334 target_id_t target_id
;
5337 /* Reuse the same CCB to query if a device was really found */
5338 scan_info
= (xpt_scan_bus_info
*)request_ccb
->ccb_h
.ppriv_ptr0
;
5339 xpt_setup_ccb(&request_ccb
->ccb_h
, request_ccb
->ccb_h
.path
,
5340 request_ccb
->ccb_h
.pinfo
.priority
);
5341 request_ccb
->ccb_h
.func_code
= XPT_GDEV_TYPE
;
5343 path_id
= request_ccb
->ccb_h
.path_id
;
5344 target_id
= request_ccb
->ccb_h
.target_id
;
5345 lun_id
= request_ccb
->ccb_h
.target_lun
;
5346 xpt_action(request_ccb
);
5348 if (request_ccb
->ccb_h
.status
!= CAM_REQ_CMP
) {
5349 struct cam_ed
*device
;
5350 struct cam_et
*target
;
5354 * If we already probed lun 0 successfully, or
5355 * we have additional configured luns on this
5356 * target that might have "gone away", go onto
5359 target
= request_ccb
->ccb_h
.path
->target
;
5361 * We may touch devices that we don't
5362 * hold references too, so ensure they
5363 * don't disappear out from under us.
5364 * The target above is referenced by the
5365 * path in the request ccb.
5368 device
= TAILQ_FIRST(&target
->ed_entries
);
5369 if (device
!= NULL
) {
5370 phl
= CAN_SRCH_HI_SPARSE(device
);
5371 if (device
->lun_id
== 0)
5372 device
= TAILQ_NEXT(device
, links
);
5374 if ((lun_id
!= 0) || (device
!= NULL
)) {
5375 if (lun_id
< (CAM_SCSI2_MAXLUN
-1) || phl
)
5379 struct cam_ed
*device
;
5381 device
= request_ccb
->ccb_h
.path
->device
;
5383 if ((device
->quirk
->quirks
& CAM_QUIRK_NOLUNS
) == 0) {
5384 /* Try the next lun */
5385 if (lun_id
< (CAM_SCSI2_MAXLUN
-1)
5386 || CAN_SRCH_HI_DENSE(device
))
5392 * Free the current request path- we're done with it.
5394 xpt_free_path(request_ccb
->ccb_h
.path
);
5397 * Check to see if we scan any further luns.
5399 if (lun_id
== request_ccb
->ccb_h
.target_lun
5400 || lun_id
> scan_info
->cpi
->max_lun
) {
5405 if (scan_info
->cpi
->hba_misc
& PIM_SEQSCAN
) {
5406 scan_info
->counter
++;
5407 if (scan_info
->counter
==
5408 scan_info
->cpi
->initiator_id
) {
5409 scan_info
->counter
++;
5411 if (scan_info
->counter
>=
5412 scan_info
->cpi
->max_target
+1) {
5416 scan_info
->counter
--;
5417 if (scan_info
->counter
== 0) {
5422 xpt_free_ccb(request_ccb
);
5423 xpt_free_ccb((union ccb
*)scan_info
->cpi
);
5424 request_ccb
= scan_info
->request_ccb
;
5425 kfree(scan_info
, M_CAMXPT
);
5426 request_ccb
->ccb_h
.status
= CAM_REQ_CMP
;
5427 xpt_done(request_ccb
);
5431 if ((scan_info
->cpi
->hba_misc
& PIM_SEQSCAN
) == 0) {
5434 status
= xpt_create_path(&path
, xpt_periph
,
5435 scan_info
->request_ccb
->ccb_h
.path_id
,
5436 scan_info
->counter
, 0);
5437 if (status
!= CAM_REQ_CMP
) {
5438 kprintf("xpt_scan_bus: xpt_create_path failed"
5439 " with status %#x, bus scan halted\n",
5441 xpt_free_ccb(request_ccb
);
5442 xpt_free_ccb((union ccb
*)scan_info
->cpi
);
5443 request_ccb
= scan_info
->request_ccb
;
5444 kfree(scan_info
, M_CAMXPT
);
5445 request_ccb
->ccb_h
.status
= status
;
5446 xpt_done(request_ccb
);
5449 xpt_setup_ccb(&request_ccb
->ccb_h
, path
,
5450 request_ccb
->ccb_h
.pinfo
.priority
);
5451 request_ccb
->ccb_h
.func_code
= XPT_SCAN_LUN
;
5452 request_ccb
->ccb_h
.cbfcnp
= xpt_scan_bus
;
5453 request_ccb
->ccb_h
.ppriv_ptr0
= scan_info
;
5454 request_ccb
->crcn
.flags
=
5455 scan_info
->request_ccb
->crcn
.flags
;
5457 status
= xpt_create_path(&path
, xpt_periph
,
5458 path_id
, target_id
, lun_id
);
5459 if (status
!= CAM_REQ_CMP
) {
5460 kprintf("xpt_scan_bus: xpt_create_path failed "
5461 "with status %#x, halting LUN scan\n",
5465 xpt_setup_ccb(&request_ccb
->ccb_h
, path
,
5466 request_ccb
->ccb_h
.pinfo
.priority
);
5467 request_ccb
->ccb_h
.func_code
= XPT_SCAN_LUN
;
5468 request_ccb
->ccb_h
.cbfcnp
= xpt_scan_bus
;
5469 request_ccb
->ccb_h
.ppriv_ptr0
= scan_info
;
5470 request_ccb
->crcn
.flags
=
5471 scan_info
->request_ccb
->crcn
.flags
;
5473 xpt_action(request_ccb
);
5483 PROBE_INQUIRY
, /* this counts as DV0 for Basic Domain Validation */
5488 PROBE_TUR_FOR_NEGOTIATION
,
5489 PROBE_INQUIRY_BASIC_DV1
,
5490 PROBE_INQUIRY_BASIC_DV2
,
5495 static char *probe_action_text
[] = {
5498 "PROBE_FULL_INQUIRY",
5500 "PROBE_SERIAL_NUM_0",
5501 "PROBE_SERIAL_NUM_1",
5502 "PROBE_TUR_FOR_NEGOTIATION",
5503 "PROBE_INQUIRY_BASIC_DV1",
5504 "PROBE_INQUIRY_BASIC_DV2",
5509 #define PROBE_SET_ACTION(softc, newaction) \
5512 text = probe_action_text; \
5513 CAM_DEBUG((softc)->periph->path, CAM_DEBUG_INFO, \
5514 ("Probe %s to %s\n", text[(softc)->action], \
5515 text[(newaction)])); \
5516 (softc)->action = (newaction); \
5520 PROBE_INQUIRY_CKSUM
= 0x01,
5521 PROBE_SERIAL_CKSUM
= 0x02,
5522 PROBE_NO_ANNOUNCE
= 0x04
5526 TAILQ_HEAD(, ccb_hdr
) request_ccbs
;
5527 probe_action action
;
5528 union ccb saved_ccb
;
5531 u_int8_t digest
[16];
5532 struct cam_periph
*periph
;
5536 xpt_scan_lun(struct cam_periph
*periph
, struct cam_path
*path
,
5537 cam_flags flags
, union ccb
*request_ccb
)
5539 struct ccb_pathinq cpi
;
5541 struct cam_path
*new_path
;
5542 struct cam_periph
*old_periph
;
5544 CAM_DEBUG(request_ccb
->ccb_h
.path
, CAM_DEBUG_TRACE
,
5545 ("xpt_scan_lun\n"));
5547 xpt_setup_ccb(&cpi
.ccb_h
, path
, /*priority*/1);
5548 cpi
.ccb_h
.func_code
= XPT_PATH_INQ
;
5549 xpt_action((union ccb
*)&cpi
);
5551 if (cpi
.ccb_h
.status
!= CAM_REQ_CMP
) {
5552 if (request_ccb
!= NULL
) {
5553 request_ccb
->ccb_h
.status
= cpi
.ccb_h
.status
;
5554 xpt_done(request_ccb
);
5559 if ((cpi
.hba_misc
& PIM_NOINITIATOR
) != 0) {
5561 * Can't scan the bus on an adapter that
5562 * cannot perform the initiator role.
5564 if (request_ccb
!= NULL
) {
5565 request_ccb
->ccb_h
.status
= CAM_REQ_CMP
;
5566 xpt_done(request_ccb
);
5571 if (request_ccb
== NULL
) {
5572 request_ccb
= kmalloc(sizeof(union ccb
), M_CAMXPT
, M_INTWAIT
);
5573 new_path
= kmalloc(sizeof(*new_path
), M_CAMXPT
, M_INTWAIT
);
5574 status
= xpt_compile_path(new_path
, xpt_periph
,
5576 path
->target
->target_id
,
5577 path
->device
->lun_id
);
5579 if (status
!= CAM_REQ_CMP
) {
5580 xpt_print(path
, "xpt_scan_lun: can't compile path, "
5581 "can't continue\n");
5582 kfree(request_ccb
, M_CAMXPT
);
5583 kfree(new_path
, M_CAMXPT
);
5586 xpt_setup_ccb(&request_ccb
->ccb_h
, new_path
, /*priority*/ 1);
5587 request_ccb
->ccb_h
.cbfcnp
= xptscandone
;
5588 request_ccb
->ccb_h
.func_code
= XPT_SCAN_LUN
;
5589 request_ccb
->crcn
.flags
= flags
;
5592 if ((old_periph
= cam_periph_find(path
, "probe")) != NULL
) {
5595 softc
= (probe_softc
*)old_periph
->softc
;
5596 TAILQ_INSERT_TAIL(&softc
->request_ccbs
, &request_ccb
->ccb_h
,
5599 status
= cam_periph_alloc(proberegister
, NULL
, probecleanup
,
5600 probestart
, "probe",
5602 request_ccb
->ccb_h
.path
, NULL
, 0,
5605 if (status
!= CAM_REQ_CMP
) {
5606 xpt_print(path
, "xpt_scan_lun: cam_alloc_periph "
5607 "returned an error, can't continue probe\n");
5608 request_ccb
->ccb_h
.status
= status
;
5609 xpt_done(request_ccb
);
5615 xptscandone(struct cam_periph
*periph
, union ccb
*done_ccb
)
5617 xpt_release_path(done_ccb
->ccb_h
.path
);
5618 kfree(done_ccb
->ccb_h
.path
, M_CAMXPT
);
5619 kfree(done_ccb
, M_CAMXPT
);
5623 proberegister(struct cam_periph
*periph
, void *arg
)
5625 union ccb
*request_ccb
; /* CCB representing the probe request */
5629 request_ccb
= (union ccb
*)arg
;
5630 if (periph
== NULL
) {
5631 kprintf("proberegister: periph was NULL!!\n");
5632 return(CAM_REQ_CMP_ERR
);
5635 if (request_ccb
== NULL
) {
5636 kprintf("proberegister: no probe CCB, "
5637 "can't register device\n");
5638 return(CAM_REQ_CMP_ERR
);
5641 softc
= kmalloc(sizeof(*softc
), M_CAMXPT
, M_INTWAIT
| M_ZERO
);
5642 TAILQ_INIT(&softc
->request_ccbs
);
5643 TAILQ_INSERT_TAIL(&softc
->request_ccbs
, &request_ccb
->ccb_h
,
5646 periph
->softc
= softc
;
5647 softc
->periph
= periph
;
5648 softc
->action
= PROBE_INVALID
;
5649 status
= cam_periph_acquire(periph
);
5650 if (status
!= CAM_REQ_CMP
) {
5656 * Ensure we've waited at least a bus settle
5657 * delay before attempting to probe the device.
5658 * For HBAs that don't do bus resets, this won't make a difference.
5660 cam_periph_freeze_after_event(periph
, &periph
->path
->bus
->last_reset
,
5662 probeschedule(periph
);
5663 return(CAM_REQ_CMP
);
5667 probeschedule(struct cam_periph
*periph
)
5669 struct ccb_pathinq cpi
;
5673 softc
= (probe_softc
*)periph
->softc
;
5674 ccb
= (union ccb
*)TAILQ_FIRST(&softc
->request_ccbs
);
5676 xpt_setup_ccb(&cpi
.ccb_h
, periph
->path
, /*priority*/1);
5677 cpi
.ccb_h
.func_code
= XPT_PATH_INQ
;
5678 xpt_action((union ccb
*)&cpi
);
5681 * If a device has gone away and another device, or the same one,
5682 * is back in the same place, it should have a unit attention
5683 * condition pending. It will not report the unit attention in
5684 * response to an inquiry, which may leave invalid transfer
5685 * negotiations in effect. The TUR will reveal the unit attention
5686 * condition. Only send the TUR for lun 0, since some devices
5687 * will get confused by commands other than inquiry to non-existent
5688 * luns. If you think a device has gone away start your scan from
5689 * lun 0. This will insure that any bogus transfer settings are
5692 * If we haven't seen the device before and the controller supports
5693 * some kind of transfer negotiation, negotiate with the first
5694 * sent command if no bus reset was performed at startup. This
5695 * ensures that the device is not confused by transfer negotiation
5696 * settings left over by loader or BIOS action.
5698 if (((ccb
->ccb_h
.path
->device
->flags
& CAM_DEV_UNCONFIGURED
) == 0)
5699 && (ccb
->ccb_h
.target_lun
== 0)) {
5700 PROBE_SET_ACTION(softc
, PROBE_TUR
);
5701 } else if ((cpi
.hba_inquiry
& (PI_WIDE_32
|PI_WIDE_16
|PI_SDTR_ABLE
)) != 0
5702 && (cpi
.hba_misc
& PIM_NOBUSRESET
) != 0) {
5703 proberequestdefaultnegotiation(periph
);
5704 PROBE_SET_ACTION(softc
, PROBE_INQUIRY
);
5706 PROBE_SET_ACTION(softc
, PROBE_INQUIRY
);
5709 if (ccb
->crcn
.flags
& CAM_EXPECT_INQ_CHANGE
)
5710 softc
->flags
|= PROBE_NO_ANNOUNCE
;
5712 softc
->flags
&= ~PROBE_NO_ANNOUNCE
;
5714 xpt_schedule(periph
, ccb
->ccb_h
.pinfo
.priority
);
5718 probestart(struct cam_periph
*periph
, union ccb
*start_ccb
)
5720 /* Probe the device that our peripheral driver points to */
5721 struct ccb_scsiio
*csio
;
5724 CAM_DEBUG(start_ccb
->ccb_h
.path
, CAM_DEBUG_TRACE
, ("probestart\n"));
5726 softc
= (probe_softc
*)periph
->softc
;
5727 csio
= &start_ccb
->csio
;
5729 switch (softc
->action
) {
5731 case PROBE_TUR_FOR_NEGOTIATION
:
5734 scsi_test_unit_ready(csio
,
5743 case PROBE_FULL_INQUIRY
:
5744 case PROBE_INQUIRY_BASIC_DV1
:
5745 case PROBE_INQUIRY_BASIC_DV2
:
5748 struct scsi_inquiry_data
*inq_buf
;
5750 inq_buf
= &periph
->path
->device
->inq_data
;
5753 * If the device is currently configured, we calculate an
5754 * MD5 checksum of the inquiry data, and if the serial number
5755 * length is greater than 0, add the serial number data
5756 * into the checksum as well. Once the inquiry and the
5757 * serial number check finish, we attempt to figure out
5758 * whether we still have the same device.
5760 if ((periph
->path
->device
->flags
& CAM_DEV_UNCONFIGURED
) == 0) {
5762 MD5Init(&softc
->context
);
5763 MD5Update(&softc
->context
, (unsigned char *)inq_buf
,
5764 sizeof(struct scsi_inquiry_data
));
5765 softc
->flags
|= PROBE_INQUIRY_CKSUM
;
5766 if (periph
->path
->device
->serial_num_len
> 0) {
5767 MD5Update(&softc
->context
,
5768 periph
->path
->device
->serial_num
,
5769 periph
->path
->device
->serial_num_len
);
5770 softc
->flags
|= PROBE_SERIAL_CKSUM
;
5772 MD5Final(softc
->digest
, &softc
->context
);
5775 if (softc
->action
== PROBE_INQUIRY
)
5776 inquiry_len
= SHORT_INQUIRY_LENGTH
;
5778 inquiry_len
= SID_ADDITIONAL_LENGTH(inq_buf
);
5781 * Some parallel SCSI devices fail to send an
5782 * ignore wide residue message when dealing with
5783 * odd length inquiry requests. Round up to be
5786 inquiry_len
= roundup2(inquiry_len
, 2);
5788 if (softc
->action
== PROBE_INQUIRY_BASIC_DV1
5789 || softc
->action
== PROBE_INQUIRY_BASIC_DV2
) {
5790 inq_buf
= kmalloc(inquiry_len
, M_CAMXPT
, M_INTWAIT
);
5796 (u_int8_t
*)inq_buf
,
5801 /*timeout*/60 * 1000);
5804 case PROBE_MODE_SENSE
:
5809 mode_buf_len
= sizeof(struct scsi_mode_header_6
)
5810 + sizeof(struct scsi_mode_blk_desc
)
5811 + sizeof(struct scsi_control_page
);
5812 mode_buf
= kmalloc(mode_buf_len
, M_CAMXPT
, M_INTWAIT
);
5813 scsi_mode_sense(csio
,
5818 SMS_PAGE_CTRL_CURRENT
,
5819 SMS_CONTROL_MODE_PAGE
,
5826 case PROBE_SERIAL_NUM_0
:
5828 struct scsi_vpd_supported_page_list
*vpd_list
= NULL
;
5829 struct cam_ed
*device
;
5831 device
= periph
->path
->device
;
5832 if ((device
->quirk
->quirks
& CAM_QUIRK_NOSERIAL
) == 0) {
5833 vpd_list
= kmalloc(sizeof(*vpd_list
), M_CAMXPT
,
5834 M_INTWAIT
| M_ZERO
);
5837 if (vpd_list
!= NULL
) {
5842 (u_int8_t
*)vpd_list
,
5845 SVPD_SUPPORTED_PAGE_LIST
,
5847 /*timeout*/60 * 1000);
5851 * We'll have to do without, let our probedone
5852 * routine finish up for us.
5854 start_ccb
->csio
.data_ptr
= NULL
;
5855 probedone(periph
, start_ccb
);
5858 case PROBE_SERIAL_NUM_1
:
5860 struct scsi_vpd_unit_serial_number
*serial_buf
;
5861 struct cam_ed
* device
;
5864 device
= periph
->path
->device
;
5865 device
->serial_num
= NULL
;
5866 device
->serial_num_len
= 0;
5868 serial_buf
= (struct scsi_vpd_unit_serial_number
*)
5869 kmalloc(sizeof(*serial_buf
), M_CAMXPT
,
5870 M_INTWAIT
| M_ZERO
);
5875 (u_int8_t
*)serial_buf
,
5876 sizeof(*serial_buf
),
5878 SVPD_UNIT_SERIAL_NUMBER
,
5880 /*timeout*/60 * 1000);
5884 CAM_DEBUG(start_ccb
->ccb_h
.path
, CAM_DEBUG_INFO
,
5885 ("probestart: invalid action state\n"));
5889 xpt_action(start_ccb
);
5893 proberequestdefaultnegotiation(struct cam_periph
*periph
)
5895 struct ccb_trans_settings cts
;
5897 xpt_setup_ccb(&cts
.ccb_h
, periph
->path
, /*priority*/1);
5898 cts
.ccb_h
.func_code
= XPT_GET_TRAN_SETTINGS
;
5899 cts
.type
= CTS_TYPE_USER_SETTINGS
;
5900 xpt_action((union ccb
*)&cts
);
5901 if ((cts
.ccb_h
.status
& CAM_STATUS_MASK
) != CAM_REQ_CMP
) {
5904 cts
.ccb_h
.func_code
= XPT_SET_TRAN_SETTINGS
;
5905 cts
.type
= CTS_TYPE_CURRENT_SETTINGS
;
5906 xpt_action((union ccb
*)&cts
);
5910 * Backoff Negotiation Code- only pertinent for SPI devices.
5913 proberequestbackoff(struct cam_periph
*periph
, struct cam_ed
*device
)
5915 struct ccb_trans_settings cts
;
5916 struct ccb_trans_settings_spi
*spi
;
5918 memset(&cts
, 0, sizeof (cts
));
5919 xpt_setup_ccb(&cts
.ccb_h
, periph
->path
, /*priority*/1);
5920 cts
.ccb_h
.func_code
= XPT_GET_TRAN_SETTINGS
;
5921 cts
.type
= CTS_TYPE_CURRENT_SETTINGS
;
5922 xpt_action((union ccb
*)&cts
);
5923 if ((cts
.ccb_h
.status
& CAM_STATUS_MASK
) != CAM_REQ_CMP
) {
5925 xpt_print(periph
->path
,
5926 "failed to get current device settings\n");
5930 if (cts
.transport
!= XPORT_SPI
) {
5932 xpt_print(periph
->path
, "not SPI transport\n");
5936 spi
= &cts
.xport_specific
.spi
;
5939 * We cannot renegotiate sync rate if we don't have one.
5941 if ((spi
->valid
& CTS_SPI_VALID_SYNC_RATE
) == 0) {
5943 xpt_print(periph
->path
, "no sync rate known\n");
5949 * We'll assert that we don't have to touch PPR options- the
5950 * SIM will see what we do with period and offset and adjust
5951 * the PPR options as appropriate.
5955 * A sync rate with unknown or zero offset is nonsensical.
5956 * A sync period of zero means Async.
5958 if ((spi
->valid
& CTS_SPI_VALID_SYNC_OFFSET
) == 0
5959 || spi
->sync_offset
== 0 || spi
->sync_period
== 0) {
5961 xpt_print(periph
->path
, "no sync rate available\n");
5966 if (device
->flags
& CAM_DEV_DV_HIT_BOTTOM
) {
5967 CAM_DEBUG(periph
->path
, CAM_DEBUG_INFO
,
5968 ("hit async: giving up on DV\n"));
5974 * Jump sync_period up by one, but stop at 5MHz and fall back to Async.
5975 * We don't try to remember 'last' settings to see if the SIM actually
5976 * gets into the speed we want to set. We check on the SIM telling
5977 * us that a requested speed is bad, but otherwise don't try and
5978 * check the speed due to the asynchronous and handshake nature
5981 spi
->valid
= CTS_SPI_VALID_SYNC_RATE
| CTS_SPI_VALID_SYNC_OFFSET
;
5984 if (spi
->sync_period
>= 0xf) {
5985 spi
->sync_period
= 0;
5986 spi
->sync_offset
= 0;
5987 CAM_DEBUG(periph
->path
, CAM_DEBUG_INFO
,
5988 ("setting to async for DV\n"));
5990 * Once we hit async, we don't want to try
5991 * any more settings.
5993 device
->flags
|= CAM_DEV_DV_HIT_BOTTOM
;
5994 } else if (bootverbose
) {
5995 CAM_DEBUG(periph
->path
, CAM_DEBUG_INFO
,
5996 ("DV: period 0x%x\n", spi
->sync_period
));
5997 kprintf("setting period to 0x%x\n", spi
->sync_period
);
5999 cts
.ccb_h
.func_code
= XPT_SET_TRAN_SETTINGS
;
6000 cts
.type
= CTS_TYPE_CURRENT_SETTINGS
;
6001 xpt_action((union ccb
*)&cts
);
6002 if ((cts
.ccb_h
.status
& CAM_STATUS_MASK
) == CAM_REQ_CMP
) {
6005 CAM_DEBUG(periph
->path
, CAM_DEBUG_INFO
,
6006 ("DV: failed to set period 0x%x\n", spi
->sync_period
));
6007 if (spi
->sync_period
== 0) {
6015 probedone(struct cam_periph
*periph
, union ccb
*done_ccb
)
6018 struct cam_path
*path
;
6021 CAM_DEBUG(done_ccb
->ccb_h
.path
, CAM_DEBUG_TRACE
, ("probedone\n"));
6023 softc
= (probe_softc
*)periph
->softc
;
6024 path
= done_ccb
->ccb_h
.path
;
6025 priority
= done_ccb
->ccb_h
.pinfo
.priority
;
6027 switch (softc
->action
) {
6030 if ((done_ccb
->ccb_h
.status
& CAM_STATUS_MASK
) != CAM_REQ_CMP
) {
6032 if (cam_periph_error(done_ccb
, 0,
6033 SF_NO_PRINT
, NULL
) == ERESTART
)
6035 else if ((done_ccb
->ccb_h
.status
& CAM_DEV_QFRZN
) != 0)
6036 /* Don't wedge the queue */
6037 xpt_release_devq(done_ccb
->ccb_h
.path
,
6041 PROBE_SET_ACTION(softc
, PROBE_INQUIRY
);
6042 xpt_release_ccb(done_ccb
);
6043 xpt_schedule(periph
, priority
);
6047 case PROBE_FULL_INQUIRY
:
6049 if ((done_ccb
->ccb_h
.status
& CAM_STATUS_MASK
) == CAM_REQ_CMP
) {
6050 struct scsi_inquiry_data
*inq_buf
;
6051 u_int8_t periph_qual
;
6053 path
->device
->flags
|= CAM_DEV_INQUIRY_DATA_VALID
;
6054 inq_buf
= &path
->device
->inq_data
;
6056 periph_qual
= SID_QUAL(inq_buf
);
6058 switch(periph_qual
) {
6059 case SID_QUAL_LU_CONNECTED
:
6064 * We conservatively request only
6065 * SHORT_INQUIRY_LEN bytes of inquiry
6066 * information during our first try
6067 * at sending an INQUIRY. If the device
6068 * has more information to give,
6069 * perform a second request specifying
6070 * the amount of information the device
6071 * is willing to give.
6073 len
= inq_buf
->additional_length
6074 + offsetof(struct scsi_inquiry_data
,
6075 additional_length
) + 1;
6076 if (softc
->action
== PROBE_INQUIRY
6077 && len
> SHORT_INQUIRY_LENGTH
) {
6078 PROBE_SET_ACTION(softc
,
6079 PROBE_FULL_INQUIRY
);
6080 xpt_release_ccb(done_ccb
);
6081 xpt_schedule(periph
, priority
);
6085 xpt_find_quirk(path
->device
);
6087 xpt_devise_transport(path
);
6088 if (INQ_DATA_TQ_ENABLED(inq_buf
))
6089 PROBE_SET_ACTION(softc
, PROBE_MODE_SENSE
);
6091 PROBE_SET_ACTION(softc
, PROBE_SERIAL_NUM_0
);
6093 path
->device
->flags
&= ~CAM_DEV_UNCONFIGURED
;
6094 xpt_reference_device(path
->device
);
6096 xpt_release_ccb(done_ccb
);
6097 xpt_schedule(periph
, priority
);
6103 } else if (cam_periph_error(done_ccb
, 0,
6104 done_ccb
->ccb_h
.target_lun
> 0
6105 ? SF_RETRY_UA
|SF_QUIET_IR
|SF_NO_PRINT
6106 : SF_RETRY_UA
|SF_NO_PRINT
,
6107 &softc
->saved_ccb
) == ERESTART
) {
6109 } else if ((done_ccb
->ccb_h
.status
& CAM_DEV_QFRZN
) != 0) {
6110 /* Don't wedge the queue */
6111 xpt_release_devq(done_ccb
->ccb_h
.path
, /*count*/1,
6115 * If we get to this point, we got an error status back
6116 * from the inquiry and the error status doesn't require
6117 * automatically retrying the command. Therefore, the
6118 * inquiry failed. If we had inquiry information before
6119 * for this device, but this latest inquiry command failed,
6120 * the device has probably gone away. If this device isn't
6121 * already marked unconfigured, notify the peripheral
6122 * drivers that this device is no more.
6124 if ((path
->device
->flags
& CAM_DEV_UNCONFIGURED
) == 0) {
6125 /* Send the async notification. */
6126 xpt_async(AC_LOST_DEVICE
, path
, NULL
);
6129 xpt_release_ccb(done_ccb
);
6132 case PROBE_MODE_SENSE
:
6134 struct ccb_scsiio
*csio
;
6135 struct scsi_mode_header_6
*mode_hdr
;
6137 csio
= &done_ccb
->csio
;
6138 mode_hdr
= (struct scsi_mode_header_6
*)csio
->data_ptr
;
6139 if ((csio
->ccb_h
.status
& CAM_STATUS_MASK
) == CAM_REQ_CMP
) {
6140 struct scsi_control_page
*page
;
6143 offset
= ((u_int8_t
*)&mode_hdr
[1])
6144 + mode_hdr
->blk_desc_len
;
6145 page
= (struct scsi_control_page
*)offset
;
6146 path
->device
->queue_flags
= page
->queue_flags
;
6147 } else if (cam_periph_error(done_ccb
, 0,
6148 SF_RETRY_UA
|SF_NO_PRINT
,
6149 &softc
->saved_ccb
) == ERESTART
) {
6151 } else if ((done_ccb
->ccb_h
.status
& CAM_DEV_QFRZN
) != 0) {
6152 /* Don't wedge the queue */
6153 xpt_release_devq(done_ccb
->ccb_h
.path
,
6154 /*count*/1, /*run_queue*/TRUE
);
6156 xpt_release_ccb(done_ccb
);
6157 kfree(mode_hdr
, M_CAMXPT
);
6158 PROBE_SET_ACTION(softc
, PROBE_SERIAL_NUM_0
);
6159 xpt_schedule(periph
, priority
);
6162 case PROBE_SERIAL_NUM_0
:
6164 struct ccb_scsiio
*csio
;
6165 struct scsi_vpd_supported_page_list
*page_list
;
6166 int length
, serialnum_supported
, i
;
6168 serialnum_supported
= 0;
6169 csio
= &done_ccb
->csio
;
6171 (struct scsi_vpd_supported_page_list
*)csio
->data_ptr
;
6173 if (page_list
== NULL
) {
6175 * Don't process the command as it was never sent
6177 } else if ((csio
->ccb_h
.status
& CAM_STATUS_MASK
) == CAM_REQ_CMP
6178 && (page_list
->length
> 0)) {
6179 length
= min(page_list
->length
,
6180 SVPD_SUPPORTED_PAGES_SIZE
);
6181 for (i
= 0; i
< length
; i
++) {
6182 if (page_list
->list
[i
] ==
6183 SVPD_UNIT_SERIAL_NUMBER
) {
6184 serialnum_supported
= 1;
6188 } else if (cam_periph_error(done_ccb
, 0,
6189 SF_RETRY_UA
|SF_NO_PRINT
,
6190 &softc
->saved_ccb
) == ERESTART
) {
6192 } else if ((done_ccb
->ccb_h
.status
& CAM_DEV_QFRZN
) != 0) {
6193 /* Don't wedge the queue */
6194 xpt_release_devq(done_ccb
->ccb_h
.path
, /*count*/1,
6198 if (page_list
!= NULL
)
6199 kfree(page_list
, M_DEVBUF
);
6201 if (serialnum_supported
) {
6202 xpt_release_ccb(done_ccb
);
6203 PROBE_SET_ACTION(softc
, PROBE_SERIAL_NUM_1
);
6204 xpt_schedule(periph
, priority
);
6208 csio
->data_ptr
= NULL
;
6212 case PROBE_SERIAL_NUM_1
:
6214 struct ccb_scsiio
*csio
;
6215 struct scsi_vpd_unit_serial_number
*serial_buf
;
6222 csio
= &done_ccb
->csio
;
6223 priority
= done_ccb
->ccb_h
.pinfo
.priority
;
6225 (struct scsi_vpd_unit_serial_number
*)csio
->data_ptr
;
6227 /* Clean up from previous instance of this device */
6228 if (path
->device
->serial_num
!= NULL
) {
6229 kfree(path
->device
->serial_num
, M_CAMXPT
);
6230 path
->device
->serial_num
= NULL
;
6231 path
->device
->serial_num_len
= 0;
6234 if (serial_buf
== NULL
) {
6236 * Don't process the command as it was never sent
6238 } else if ((csio
->ccb_h
.status
& CAM_STATUS_MASK
) == CAM_REQ_CMP
6239 && (serial_buf
->length
> 0)) {
6242 path
->device
->serial_num
=
6243 kmalloc((serial_buf
->length
+ 1),
6244 M_CAMXPT
, M_INTWAIT
);
6245 bcopy(serial_buf
->serial_num
,
6246 path
->device
->serial_num
,
6247 serial_buf
->length
);
6248 path
->device
->serial_num_len
= serial_buf
->length
;
6249 path
->device
->serial_num
[serial_buf
->length
] = '\0';
6250 } else if (cam_periph_error(done_ccb
, 0,
6251 SF_RETRY_UA
|SF_NO_PRINT
,
6252 &softc
->saved_ccb
) == ERESTART
) {
6254 } else if ((done_ccb
->ccb_h
.status
& CAM_DEV_QFRZN
) != 0) {
6255 /* Don't wedge the queue */
6256 xpt_release_devq(done_ccb
->ccb_h
.path
, /*count*/1,
6261 * Let's see if we have seen this device before.
6263 if ((softc
->flags
& PROBE_INQUIRY_CKSUM
) != 0) {
6265 u_int8_t digest
[16];
6270 (unsigned char *)&path
->device
->inq_data
,
6271 sizeof(struct scsi_inquiry_data
));
6274 MD5Update(&context
, serial_buf
->serial_num
,
6275 serial_buf
->length
);
6277 MD5Final(digest
, &context
);
6278 if (bcmp(softc
->digest
, digest
, 16) == 0)
6282 * XXX Do we need to do a TUR in order to ensure
6283 * that the device really hasn't changed???
6286 && ((softc
->flags
& PROBE_NO_ANNOUNCE
) == 0))
6287 xpt_async(AC_LOST_DEVICE
, path
, NULL
);
6289 if (serial_buf
!= NULL
)
6290 kfree(serial_buf
, M_CAMXPT
);
6294 * Now that we have all the necessary
6295 * information to safely perform transfer
6296 * negotiations... Controllers don't perform
6297 * any negotiation or tagged queuing until
6298 * after the first XPT_SET_TRAN_SETTINGS ccb is
6299 * received. So, on a new device, just retrieve
6300 * the user settings, and set them as the current
6301 * settings to set the device up.
6303 proberequestdefaultnegotiation(periph
);
6304 xpt_release_ccb(done_ccb
);
6307 * Perform a TUR to allow the controller to
6308 * perform any necessary transfer negotiation.
6310 PROBE_SET_ACTION(softc
, PROBE_TUR_FOR_NEGOTIATION
);
6311 xpt_schedule(periph
, priority
);
6314 xpt_release_ccb(done_ccb
);
6317 case PROBE_TUR_FOR_NEGOTIATION
:
6319 if ((done_ccb
->ccb_h
.status
& CAM_DEV_QFRZN
) != 0) {
6320 /* Don't wedge the queue */
6321 xpt_release_devq(done_ccb
->ccb_h
.path
, /*count*/1,
6325 xpt_reference_device(path
->device
);
6327 * Do Domain Validation for lun 0 on devices that claim
6328 * to support Synchronous Transfer modes.
6330 if (softc
->action
== PROBE_TUR_FOR_NEGOTIATION
6331 && done_ccb
->ccb_h
.target_lun
== 0
6332 && (path
->device
->inq_data
.flags
& SID_Sync
) != 0
6333 && (path
->device
->flags
& CAM_DEV_IN_DV
) == 0) {
6334 CAM_DEBUG(periph
->path
, CAM_DEBUG_INFO
,
6335 ("Begin Domain Validation\n"));
6336 path
->device
->flags
|= CAM_DEV_IN_DV
;
6337 xpt_release_ccb(done_ccb
);
6338 PROBE_SET_ACTION(softc
, PROBE_INQUIRY_BASIC_DV1
);
6339 xpt_schedule(periph
, priority
);
6342 if (softc
->action
== PROBE_DV_EXIT
) {
6343 CAM_DEBUG(periph
->path
, CAM_DEBUG_INFO
,
6344 ("Leave Domain Validation\n"));
6346 path
->device
->flags
&=
6347 ~(CAM_DEV_UNCONFIGURED
|CAM_DEV_IN_DV
|CAM_DEV_DV_HIT_BOTTOM
);
6348 if ((softc
->flags
& PROBE_NO_ANNOUNCE
) == 0) {
6349 /* Inform the XPT that a new device has been found */
6350 done_ccb
->ccb_h
.func_code
= XPT_GDEV_TYPE
;
6351 xpt_action(done_ccb
);
6352 xpt_async(AC_FOUND_DEVICE
, done_ccb
->ccb_h
.path
,
6355 xpt_release_ccb(done_ccb
);
6357 case PROBE_INQUIRY_BASIC_DV1
:
6358 case PROBE_INQUIRY_BASIC_DV2
:
6360 struct scsi_inquiry_data
*nbuf
;
6361 struct ccb_scsiio
*csio
;
6363 if ((done_ccb
->ccb_h
.status
& CAM_DEV_QFRZN
) != 0) {
6364 /* Don't wedge the queue */
6365 xpt_release_devq(done_ccb
->ccb_h
.path
, /*count*/1,
6368 csio
= &done_ccb
->csio
;
6369 nbuf
= (struct scsi_inquiry_data
*)csio
->data_ptr
;
6370 if (bcmp(nbuf
, &path
->device
->inq_data
, SHORT_INQUIRY_LENGTH
)) {
6372 "inquiry data fails comparison at DV%d step\n",
6373 softc
->action
== PROBE_INQUIRY_BASIC_DV1
? 1 : 2);
6374 if (proberequestbackoff(periph
, path
->device
)) {
6375 path
->device
->flags
&= ~CAM_DEV_IN_DV
;
6376 PROBE_SET_ACTION(softc
, PROBE_TUR_FOR_NEGOTIATION
);
6379 PROBE_SET_ACTION(softc
, PROBE_DV_EXIT
);
6381 kfree(nbuf
, M_CAMXPT
);
6382 xpt_release_ccb(done_ccb
);
6383 xpt_schedule(periph
, priority
);
6386 kfree(nbuf
, M_CAMXPT
);
6387 if (softc
->action
== PROBE_INQUIRY_BASIC_DV1
) {
6388 PROBE_SET_ACTION(softc
, PROBE_INQUIRY_BASIC_DV2
);
6389 xpt_release_ccb(done_ccb
);
6390 xpt_schedule(periph
, priority
);
6393 if (softc
->action
== PROBE_DV_EXIT
) {
6394 CAM_DEBUG(periph
->path
, CAM_DEBUG_INFO
,
6395 ("Leave Domain Validation Successfully\n"));
6397 path
->device
->flags
&=
6398 ~(CAM_DEV_UNCONFIGURED
|CAM_DEV_IN_DV
|CAM_DEV_DV_HIT_BOTTOM
);
6399 if ((softc
->flags
& PROBE_NO_ANNOUNCE
) == 0) {
6400 /* Inform the XPT that a new device has been found */
6401 done_ccb
->ccb_h
.func_code
= XPT_GDEV_TYPE
;
6402 xpt_action(done_ccb
);
6403 xpt_async(AC_FOUND_DEVICE
, done_ccb
->ccb_h
.path
,
6406 xpt_release_ccb(done_ccb
);
6410 CAM_DEBUG(done_ccb
->ccb_h
.path
, CAM_DEBUG_INFO
,
6411 ("probedone: invalid action state\n"));
6415 done_ccb
= (union ccb
*)TAILQ_FIRST(&softc
->request_ccbs
);
6416 TAILQ_REMOVE(&softc
->request_ccbs
, &done_ccb
->ccb_h
, periph_links
.tqe
);
6417 done_ccb
->ccb_h
.status
= CAM_REQ_CMP
;
6419 if (TAILQ_FIRST(&softc
->request_ccbs
) == NULL
) {
6420 cam_periph_invalidate(periph
);
6421 cam_periph_release(periph
);
6423 probeschedule(periph
);
6428 probecleanup(struct cam_periph
*periph
)
6430 kfree(periph
->softc
, M_CAMXPT
);
6434 xpt_find_quirk(struct cam_ed
*device
)
6438 match
= cam_quirkmatch((caddr_t
)&device
->inq_data
,
6439 (caddr_t
)xpt_quirk_table
,
6440 NELEM(xpt_quirk_table
),
6441 sizeof(*xpt_quirk_table
), scsi_inquiry_match
);
6444 panic("xpt_find_quirk: device didn't match wildcard entry!!");
6446 device
->quirk
= (struct xpt_quirk_entry
*)match
;
6450 sysctl_cam_search_luns(SYSCTL_HANDLER_ARGS
)
6454 lbool
= cam_srch_hi
;
6455 error
= sysctl_handle_int(oidp
, &lbool
, 0, req
);
6456 if (error
!= 0 || req
->newptr
== NULL
)
6458 if (lbool
== 0 || lbool
== 1) {
6459 cam_srch_hi
= lbool
;
6467 xpt_devise_transport(struct cam_path
*path
)
6469 struct ccb_pathinq cpi
;
6470 struct ccb_trans_settings cts
;
6471 struct scsi_inquiry_data
*inq_buf
;
6473 /* Get transport information from the SIM */
6474 xpt_setup_ccb(&cpi
.ccb_h
, path
, /*priority*/1);
6475 cpi
.ccb_h
.func_code
= XPT_PATH_INQ
;
6476 xpt_action((union ccb
*)&cpi
);
6479 if ((path
->device
->flags
& CAM_DEV_INQUIRY_DATA_VALID
) != 0)
6480 inq_buf
= &path
->device
->inq_data
;
6481 path
->device
->protocol
= PROTO_SCSI
;
6482 path
->device
->protocol_version
=
6483 inq_buf
!= NULL
? SID_ANSI_REV(inq_buf
) : cpi
.protocol_version
;
6484 path
->device
->transport
= cpi
.transport
;
6485 path
->device
->transport_version
= cpi
.transport_version
;
6488 * Any device not using SPI3 features should
6489 * be considered SPI2 or lower.
6491 if (inq_buf
!= NULL
) {
6492 if (path
->device
->transport
== XPORT_SPI
6493 && (inq_buf
->spi3data
& SID_SPI_MASK
) == 0
6494 && path
->device
->transport_version
> 2)
6495 path
->device
->transport_version
= 2;
6497 struct cam_ed
* otherdev
;
6499 for (otherdev
= TAILQ_FIRST(&path
->target
->ed_entries
);
6501 otherdev
= TAILQ_NEXT(otherdev
, links
)) {
6502 if (otherdev
!= path
->device
)
6506 if (otherdev
!= NULL
) {
6508 * Initially assume the same versioning as
6509 * prior luns for this target.
6511 path
->device
->protocol_version
=
6512 otherdev
->protocol_version
;
6513 path
->device
->transport_version
=
6514 otherdev
->transport_version
;
6516 /* Until we know better, opt for safty */
6517 path
->device
->protocol_version
= 2;
6518 if (path
->device
->transport
== XPORT_SPI
)
6519 path
->device
->transport_version
= 2;
6521 path
->device
->transport_version
= 0;
6527 * For a device compliant with SPC-2 we should be able
6528 * to determine the transport version supported by
6529 * scrutinizing the version descriptors in the
6533 /* Tell the controller what we think */
6534 xpt_setup_ccb(&cts
.ccb_h
, path
, /*priority*/1);
6535 cts
.ccb_h
.func_code
= XPT_SET_TRAN_SETTINGS
;
6536 cts
.type
= CTS_TYPE_CURRENT_SETTINGS
;
6537 cts
.transport
= path
->device
->transport
;
6538 cts
.transport_version
= path
->device
->transport_version
;
6539 cts
.protocol
= path
->device
->protocol
;
6540 cts
.protocol_version
= path
->device
->protocol_version
;
6541 cts
.proto_specific
.valid
= 0;
6542 cts
.xport_specific
.valid
= 0;
6543 xpt_action((union ccb
*)&cts
);
6547 xpt_set_transfer_settings(struct ccb_trans_settings
*cts
, struct cam_ed
*device
,
6550 struct ccb_pathinq cpi
;
6551 struct ccb_trans_settings cur_cts
;
6552 struct ccb_trans_settings_scsi
*scsi
;
6553 struct ccb_trans_settings_scsi
*cur_scsi
;
6554 struct cam_sim
*sim
;
6555 struct scsi_inquiry_data
*inq_data
;
6557 if (device
== NULL
) {
6558 cts
->ccb_h
.status
= CAM_PATH_INVALID
;
6559 xpt_done((union ccb
*)cts
);
6563 if (cts
->protocol
== PROTO_UNKNOWN
6564 || cts
->protocol
== PROTO_UNSPECIFIED
) {
6565 cts
->protocol
= device
->protocol
;
6566 cts
->protocol_version
= device
->protocol_version
;
6569 if (cts
->protocol_version
== PROTO_VERSION_UNKNOWN
6570 || cts
->protocol_version
== PROTO_VERSION_UNSPECIFIED
)
6571 cts
->protocol_version
= device
->protocol_version
;
6573 if (cts
->protocol
!= device
->protocol
) {
6574 xpt_print(cts
->ccb_h
.path
, "Uninitialized Protocol %x:%x?\n",
6575 cts
->protocol
, device
->protocol
);
6576 cts
->protocol
= device
->protocol
;
6579 if (cts
->protocol_version
> device
->protocol_version
) {
6581 xpt_print(cts
->ccb_h
.path
, "Down reving Protocol "
6582 "Version from %d to %d?\n", cts
->protocol_version
,
6583 device
->protocol_version
);
6585 cts
->protocol_version
= device
->protocol_version
;
6588 if (cts
->transport
== XPORT_UNKNOWN
6589 || cts
->transport
== XPORT_UNSPECIFIED
) {
6590 cts
->transport
= device
->transport
;
6591 cts
->transport_version
= device
->transport_version
;
6594 if (cts
->transport_version
== XPORT_VERSION_UNKNOWN
6595 || cts
->transport_version
== XPORT_VERSION_UNSPECIFIED
)
6596 cts
->transport_version
= device
->transport_version
;
6598 if (cts
->transport
!= device
->transport
) {
6599 xpt_print(cts
->ccb_h
.path
, "Uninitialized Transport %x:%x?\n",
6600 cts
->transport
, device
->transport
);
6601 cts
->transport
= device
->transport
;
6604 if (cts
->transport_version
> device
->transport_version
) {
6606 xpt_print(cts
->ccb_h
.path
, "Down reving Transport "
6607 "Version from %d to %d?\n", cts
->transport_version
,
6608 device
->transport_version
);
6610 cts
->transport_version
= device
->transport_version
;
6613 sim
= cts
->ccb_h
.path
->bus
->sim
;
6616 * Nothing more of interest to do unless
6617 * this is a device connected via the
6620 if (cts
->protocol
!= PROTO_SCSI
) {
6621 if (async_update
== FALSE
)
6622 (*(sim
->sim_action
))(sim
, (union ccb
*)cts
);
6626 inq_data
= &device
->inq_data
;
6627 scsi
= &cts
->proto_specific
.scsi
;
6628 xpt_setup_ccb(&cpi
.ccb_h
, cts
->ccb_h
.path
, /*priority*/1);
6629 cpi
.ccb_h
.func_code
= XPT_PATH_INQ
;
6630 xpt_action((union ccb
*)&cpi
);
6632 /* SCSI specific sanity checking */
6633 if ((cpi
.hba_inquiry
& PI_TAG_ABLE
) == 0
6634 || (INQ_DATA_TQ_ENABLED(inq_data
)) == 0
6635 || (device
->queue_flags
& SCP_QUEUE_DQUE
) != 0
6636 || (device
->quirk
->mintags
== 0)) {
6638 * Can't tag on hardware that doesn't support tags,
6639 * doesn't have it enabled, or has broken tag support.
6641 scsi
->flags
&= ~CTS_SCSI_FLAGS_TAG_ENB
;
6644 if (async_update
== FALSE
) {
6646 * Perform sanity checking against what the
6647 * controller and device can do.
6649 xpt_setup_ccb(&cur_cts
.ccb_h
, cts
->ccb_h
.path
, /*priority*/1);
6650 cur_cts
.ccb_h
.func_code
= XPT_GET_TRAN_SETTINGS
;
6651 cur_cts
.type
= cts
->type
;
6652 xpt_action((union ccb
*)&cur_cts
);
6653 if ((cur_cts
.ccb_h
.status
& CAM_STATUS_MASK
) != CAM_REQ_CMP
) {
6656 cur_scsi
= &cur_cts
.proto_specific
.scsi
;
6657 if ((scsi
->valid
& CTS_SCSI_VALID_TQ
) == 0) {
6658 scsi
->flags
&= ~CTS_SCSI_FLAGS_TAG_ENB
;
6659 scsi
->flags
|= cur_scsi
->flags
& CTS_SCSI_FLAGS_TAG_ENB
;
6661 if ((cur_scsi
->valid
& CTS_SCSI_VALID_TQ
) == 0)
6662 scsi
->flags
&= ~CTS_SCSI_FLAGS_TAG_ENB
;
6665 /* SPI specific sanity checking */
6666 if (cts
->transport
== XPORT_SPI
&& async_update
== FALSE
) {
6668 struct ccb_trans_settings_spi
*spi
;
6669 struct ccb_trans_settings_spi
*cur_spi
;
6671 spi
= &cts
->xport_specific
.spi
;
6673 cur_spi
= &cur_cts
.xport_specific
.spi
;
6675 /* Fill in any gaps in what the user gave us */
6676 if ((spi
->valid
& CTS_SPI_VALID_SYNC_RATE
) == 0)
6677 spi
->sync_period
= cur_spi
->sync_period
;
6678 if ((cur_spi
->valid
& CTS_SPI_VALID_SYNC_RATE
) == 0)
6679 spi
->sync_period
= 0;
6680 if ((spi
->valid
& CTS_SPI_VALID_SYNC_OFFSET
) == 0)
6681 spi
->sync_offset
= cur_spi
->sync_offset
;
6682 if ((cur_spi
->valid
& CTS_SPI_VALID_SYNC_OFFSET
) == 0)
6683 spi
->sync_offset
= 0;
6684 if ((spi
->valid
& CTS_SPI_VALID_PPR_OPTIONS
) == 0)
6685 spi
->ppr_options
= cur_spi
->ppr_options
;
6686 if ((cur_spi
->valid
& CTS_SPI_VALID_PPR_OPTIONS
) == 0)
6687 spi
->ppr_options
= 0;
6688 if ((spi
->valid
& CTS_SPI_VALID_BUS_WIDTH
) == 0)
6689 spi
->bus_width
= cur_spi
->bus_width
;
6690 if ((cur_spi
->valid
& CTS_SPI_VALID_BUS_WIDTH
) == 0)
6692 if ((spi
->valid
& CTS_SPI_VALID_DISC
) == 0) {
6693 spi
->flags
&= ~CTS_SPI_FLAGS_DISC_ENB
;
6694 spi
->flags
|= cur_spi
->flags
& CTS_SPI_FLAGS_DISC_ENB
;
6696 if ((cur_spi
->valid
& CTS_SPI_VALID_DISC
) == 0)
6697 spi
->flags
&= ~CTS_SPI_FLAGS_DISC_ENB
;
6698 if (((device
->flags
& CAM_DEV_INQUIRY_DATA_VALID
) != 0
6699 && (inq_data
->flags
& SID_Sync
) == 0
6700 && cts
->type
== CTS_TYPE_CURRENT_SETTINGS
)
6701 || ((cpi
.hba_inquiry
& PI_SDTR_ABLE
) == 0)) {
6703 spi
->sync_period
= 0;
6704 spi
->sync_offset
= 0;
6707 switch (spi
->bus_width
) {
6708 case MSG_EXT_WDTR_BUS_32_BIT
:
6709 if (((device
->flags
& CAM_DEV_INQUIRY_DATA_VALID
) == 0
6710 || (inq_data
->flags
& SID_WBus32
) != 0
6711 || cts
->type
== CTS_TYPE_USER_SETTINGS
)
6712 && (cpi
.hba_inquiry
& PI_WIDE_32
) != 0)
6714 /* Fall Through to 16-bit */
6715 case MSG_EXT_WDTR_BUS_16_BIT
:
6716 if (((device
->flags
& CAM_DEV_INQUIRY_DATA_VALID
) == 0
6717 || (inq_data
->flags
& SID_WBus16
) != 0
6718 || cts
->type
== CTS_TYPE_USER_SETTINGS
)
6719 && (cpi
.hba_inquiry
& PI_WIDE_16
) != 0) {
6720 spi
->bus_width
= MSG_EXT_WDTR_BUS_16_BIT
;
6723 /* Fall Through to 8-bit */
6724 default: /* New bus width?? */
6725 case MSG_EXT_WDTR_BUS_8_BIT
:
6726 /* All targets can do this */
6727 spi
->bus_width
= MSG_EXT_WDTR_BUS_8_BIT
;
6731 spi3caps
= cpi
.xport_specific
.spi
.ppr_options
;
6732 if ((device
->flags
& CAM_DEV_INQUIRY_DATA_VALID
) != 0
6733 && cts
->type
== CTS_TYPE_CURRENT_SETTINGS
)
6734 spi3caps
&= inq_data
->spi3data
;
6736 if ((spi3caps
& SID_SPI_CLOCK_DT
) == 0)
6737 spi
->ppr_options
&= ~MSG_EXT_PPR_DT_REQ
;
6739 if ((spi3caps
& SID_SPI_IUS
) == 0)
6740 spi
->ppr_options
&= ~MSG_EXT_PPR_IU_REQ
;
6742 if ((spi3caps
& SID_SPI_QAS
) == 0)
6743 spi
->ppr_options
&= ~MSG_EXT_PPR_QAS_REQ
;
6745 /* No SPI Transfer settings are allowed unless we are wide */
6746 if (spi
->bus_width
== 0)
6747 spi
->ppr_options
= 0;
6749 if ((spi
->valid
& CTS_SPI_VALID_DISC
)
6750 && ((spi
->flags
& CTS_SPI_FLAGS_DISC_ENB
) == 0)) {
6752 * Can't tag queue without disconnection.
6754 scsi
->flags
&= ~CTS_SCSI_FLAGS_TAG_ENB
;
6755 scsi
->valid
|= CTS_SCSI_VALID_TQ
;
6759 * If we are currently performing tagged transactions to
6760 * this device and want to change its negotiation parameters,
6761 * go non-tagged for a bit to give the controller a chance to
6762 * negotiate unhampered by tag messages.
6764 if (cts
->type
== CTS_TYPE_CURRENT_SETTINGS
6765 && (device
->inq_flags
& SID_CmdQue
) != 0
6766 && (scsi
->flags
& CTS_SCSI_FLAGS_TAG_ENB
) != 0
6767 && (spi
->flags
& (CTS_SPI_VALID_SYNC_RATE
|
6768 CTS_SPI_VALID_SYNC_OFFSET
|
6769 CTS_SPI_VALID_BUS_WIDTH
)) != 0)
6770 xpt_toggle_tags(cts
->ccb_h
.path
);
6773 if (cts
->type
== CTS_TYPE_CURRENT_SETTINGS
6774 && (scsi
->valid
& CTS_SCSI_VALID_TQ
) != 0) {
6778 * If we are transitioning from tags to no-tags or
6779 * vice-versa, we need to carefully freeze and restart
6780 * the queue so that we don't overlap tagged and non-tagged
6781 * commands. We also temporarily stop tags if there is
6782 * a change in transfer negotiation settings to allow
6783 * "tag-less" negotiation.
6785 if ((device
->flags
& CAM_DEV_TAG_AFTER_COUNT
) != 0
6786 || (device
->inq_flags
& SID_CmdQue
) != 0)
6787 device_tagenb
= TRUE
;
6789 device_tagenb
= FALSE
;
6791 if (((scsi
->flags
& CTS_SCSI_FLAGS_TAG_ENB
) != 0
6792 && device_tagenb
== FALSE
)
6793 || ((scsi
->flags
& CTS_SCSI_FLAGS_TAG_ENB
) == 0
6794 && device_tagenb
== TRUE
)) {
6796 if ((scsi
->flags
& CTS_SCSI_FLAGS_TAG_ENB
) != 0) {
6798 * Delay change to use tags until after a
6799 * few commands have gone to this device so
6800 * the controller has time to perform transfer
6801 * negotiations without tagged messages getting
6804 device
->tag_delay_count
= CAM_TAG_DELAY_COUNT
;
6805 device
->flags
|= CAM_DEV_TAG_AFTER_COUNT
;
6807 struct ccb_relsim crs
;
6809 xpt_freeze_devq(cts
->ccb_h
.path
, /*count*/1);
6810 device
->inq_flags
&= ~SID_CmdQue
;
6811 xpt_dev_ccbq_resize(cts
->ccb_h
.path
,
6812 sim
->max_dev_openings
);
6813 device
->flags
&= ~CAM_DEV_TAG_AFTER_COUNT
;
6814 device
->tag_delay_count
= 0;
6816 xpt_setup_ccb(&crs
.ccb_h
, cts
->ccb_h
.path
,
6818 crs
.ccb_h
.func_code
= XPT_REL_SIMQ
;
6819 crs
.release_flags
= RELSIM_RELEASE_AFTER_QEMPTY
;
6821 = crs
.release_timeout
6824 xpt_action((union ccb
*)&crs
);
6828 if (async_update
== FALSE
)
6829 (*(sim
->sim_action
))(sim
, (union ccb
*)cts
);
6833 xpt_toggle_tags(struct cam_path
*path
)
6838 * Give controllers a chance to renegotiate
6839 * before starting tag operations. We
6840 * "toggle" tagged queuing off then on
6841 * which causes the tag enable command delay
6842 * counter to come into effect.
6845 if ((dev
->flags
& CAM_DEV_TAG_AFTER_COUNT
) != 0
6846 || ((dev
->inq_flags
& SID_CmdQue
) != 0
6847 && (dev
->inq_flags
& (SID_Sync
|SID_WBus16
|SID_WBus32
)) != 0)) {
6848 struct ccb_trans_settings cts
;
6850 xpt_setup_ccb(&cts
.ccb_h
, path
, 1);
6851 cts
.protocol
= PROTO_SCSI
;
6852 cts
.protocol_version
= PROTO_VERSION_UNSPECIFIED
;
6853 cts
.transport
= XPORT_UNSPECIFIED
;
6854 cts
.transport_version
= XPORT_VERSION_UNSPECIFIED
;
6855 cts
.proto_specific
.scsi
.flags
= 0;
6856 cts
.proto_specific
.scsi
.valid
= CTS_SCSI_VALID_TQ
;
6857 xpt_set_transfer_settings(&cts
, path
->device
,
6858 /*async_update*/TRUE
);
6859 cts
.proto_specific
.scsi
.flags
= CTS_SCSI_FLAGS_TAG_ENB
;
6860 xpt_set_transfer_settings(&cts
, path
->device
,
6861 /*async_update*/TRUE
);
6866 xpt_start_tags(struct cam_path
*path
)
6868 struct ccb_relsim crs
;
6869 struct cam_ed
*device
;
6870 struct cam_sim
*sim
;
6873 device
= path
->device
;
6874 sim
= path
->bus
->sim
;
6875 device
->flags
&= ~CAM_DEV_TAG_AFTER_COUNT
;
6876 xpt_freeze_devq(path
, /*count*/1);
6877 device
->inq_flags
|= SID_CmdQue
;
6878 if (device
->tag_saved_openings
!= 0)
6879 newopenings
= device
->tag_saved_openings
;
6881 newopenings
= min(device
->quirk
->maxtags
,
6882 sim
->max_tagged_dev_openings
);
6883 xpt_dev_ccbq_resize(path
, newopenings
);
6884 xpt_setup_ccb(&crs
.ccb_h
, path
, /*priority*/1);
6885 crs
.ccb_h
.func_code
= XPT_REL_SIMQ
;
6886 crs
.release_flags
= RELSIM_RELEASE_AFTER_QEMPTY
;
6888 = crs
.release_timeout
6891 xpt_action((union ccb
*)&crs
);
6894 static int busses_to_config
;
6895 static int busses_to_reset
;
6898 xptconfigbuscountfunc(struct cam_eb
*bus
, void *arg
)
6900 sim_lock_assert_owned(bus
->sim
->lock
);
6902 if (bus
->counted_to_config
== 0 && bus
->path_id
!= CAM_XPT_PATH_ID
) {
6903 struct cam_path path
;
6904 struct ccb_pathinq cpi
;
6908 kprintf("CAM: Configuring bus:");
6912 bus
->sim
->unit_number
);
6914 kprintf(" (unknown)\n");
6917 atomic_add_int(&busses_to_config
, 1);
6918 bus
->counted_to_config
= 1;
6919 xpt_compile_path(&path
, NULL
, bus
->path_id
,
6920 CAM_TARGET_WILDCARD
, CAM_LUN_WILDCARD
);
6921 xpt_setup_ccb(&cpi
.ccb_h
, &path
, /*priority*/1);
6922 cpi
.ccb_h
.func_code
= XPT_PATH_INQ
;
6923 xpt_action((union ccb
*)&cpi
);
6924 can_negotiate
= cpi
.hba_inquiry
;
6925 can_negotiate
&= (PI_WIDE_32
|PI_WIDE_16
|PI_SDTR_ABLE
);
6926 if ((cpi
.hba_misc
& PIM_NOBUSRESET
) == 0 && can_negotiate
)
6928 xpt_release_path(&path
);
6930 if (bus
->counted_to_config
== 0 && bus
->path_id
== CAM_XPT_PATH_ID
) {
6931 /* this is our dummy periph/bus */
6932 atomic_add_int(&busses_to_config
, 1);
6933 bus
->counted_to_config
= 1;
6940 xptconfigfunc(struct cam_eb
*bus
, void *arg
)
6942 struct cam_path
*path
;
6943 union ccb
*work_ccb
;
6945 sim_lock_assert_owned(bus
->sim
->lock
);
6947 if (bus
->path_id
!= CAM_XPT_PATH_ID
) {
6951 work_ccb
= xpt_alloc_ccb();
6952 if ((status
= xpt_create_path(&path
, xpt_periph
, bus
->path_id
,
6953 CAM_TARGET_WILDCARD
,
6954 CAM_LUN_WILDCARD
)) !=CAM_REQ_CMP
){
6955 kprintf("xptconfigfunc: xpt_create_path failed with "
6956 "status %#x for bus %d\n", status
, bus
->path_id
);
6957 kprintf("xptconfigfunc: halting bus configuration\n");
6958 xpt_free_ccb(work_ccb
);
6959 xpt_uncount_bus(bus
);
6962 xpt_setup_ccb(&work_ccb
->ccb_h
, path
, /*priority*/1);
6963 work_ccb
->ccb_h
.func_code
= XPT_PATH_INQ
;
6964 xpt_action(work_ccb
);
6965 if (work_ccb
->ccb_h
.status
!= CAM_REQ_CMP
) {
6966 kprintf("xptconfigfunc: CPI failed on bus %d "
6967 "with status %d\n", bus
->path_id
,
6968 work_ccb
->ccb_h
.status
);
6969 xpt_finishconfig(xpt_periph
, work_ccb
);
6973 can_negotiate
= work_ccb
->cpi
.hba_inquiry
;
6974 can_negotiate
&= (PI_WIDE_32
|PI_WIDE_16
|PI_SDTR_ABLE
);
6975 if ((work_ccb
->cpi
.hba_misc
& PIM_NOBUSRESET
) == 0
6976 && (can_negotiate
!= 0)) {
6977 xpt_setup_ccb(&work_ccb
->ccb_h
, path
, /*priority*/1);
6978 work_ccb
->ccb_h
.func_code
= XPT_RESET_BUS
;
6979 work_ccb
->ccb_h
.cbfcnp
= NULL
;
6980 CAM_DEBUG(path
, CAM_DEBUG_SUBTRACE
,
6981 ("Resetting Bus\n"));
6982 xpt_action(work_ccb
);
6983 xpt_finishconfig(xpt_periph
, work_ccb
);
6985 /* Act as though we performed a successful BUS RESET */
6986 work_ccb
->ccb_h
.func_code
= XPT_RESET_BUS
;
6987 xpt_finishconfig(xpt_periph
, work_ccb
);
6990 xpt_uncount_bus(bus
);
6997 * Now that interrupts are enabled, go find our devices.
6999 * This hook function is called once by run_interrupt_driven_config_hooks().
7000 * XPT is expected to disestablish its hook when done.
7003 xpt_config(void *arg
)
7007 /* Setup debugging flags and path */
7008 #ifdef CAM_DEBUG_FLAGS
7009 cam_dflags
= CAM_DEBUG_FLAGS
;
7010 #else /* !CAM_DEBUG_FLAGS */
7011 cam_dflags
= CAM_DEBUG_NONE
;
7012 #endif /* CAM_DEBUG_FLAGS */
7013 #ifdef CAM_DEBUG_BUS
7014 if (cam_dflags
!= CAM_DEBUG_NONE
) {
7016 * Locking is specifically omitted here. No SIMs have
7017 * registered yet, so xpt_create_path will only be searching
7018 * empty lists of targets and devices.
7020 if (xpt_create_path(&cam_dpath
, xpt_periph
,
7021 CAM_DEBUG_BUS
, CAM_DEBUG_TARGET
,
7022 CAM_DEBUG_LUN
) != CAM_REQ_CMP
) {
7023 kprintf("xpt_config: xpt_create_path() failed for debug"
7024 " target %d:%d:%d, debugging disabled\n",
7025 CAM_DEBUG_BUS
, CAM_DEBUG_TARGET
, CAM_DEBUG_LUN
);
7026 cam_dflags
= CAM_DEBUG_NONE
;
7031 #else /* !CAM_DEBUG_BUS */
7033 #endif /* CAM_DEBUG_BUS */
7034 #endif /* CAMDEBUG */
7037 * Scan all installed busses. This will also add a count
7038 * for our dummy placeholder (xpt_periph).
7040 xpt_for_all_busses(xptconfigbuscountfunc
, NULL
);
7042 kprintf("CAM: Configuring %d busses\n", busses_to_config
- 1);
7043 if (busses_to_reset
> 0 && scsi_delay
>= 2000) {
7044 kprintf("Waiting %d seconds for SCSI "
7045 "devices to settle\n",
7048 xpt_for_all_busses(xptconfigfunc
, NULL
);
7052 * If the given device only has one peripheral attached to it, and if that
7053 * peripheral is the passthrough driver, announce it. This insures that the
7054 * user sees some sort of announcement for every peripheral in their system.
7057 xptpassannouncefunc(struct cam_ed
*device
, void *arg
)
7059 struct cam_periph
*periph
;
7062 for (periph
= SLIST_FIRST(&device
->periphs
), i
= 0; periph
!= NULL
;
7063 periph
= SLIST_NEXT(periph
, periph_links
), i
++);
7065 periph
= SLIST_FIRST(&device
->periphs
);
7067 && (strncmp(periph
->periph_name
, "pass", 4) == 0))
7068 xpt_announce_periph(periph
, NULL
);
7074 xpt_finishconfig_task(void *context
, int pending
)
7076 struct periph_driver
**p_drv
;
7079 kprintf("CAM: finished configuring all busses\n");
7081 if (busses_to_config
== 0) {
7082 /* Register all the peripheral drivers */
7083 /* XXX This will have to change when we have loadable modules */
7084 p_drv
= periph_drivers
;
7085 for (i
= 0; p_drv
[i
] != NULL
; i
++) {
7086 (*p_drv
[i
]->init
)();
7090 * Check for devices with no "standard" peripheral driver
7091 * attached. For any devices like that, announce the
7092 * passthrough driver so the user will see something.
7094 xpt_for_all_devices(xptpassannouncefunc
, NULL
);
7096 /* Release our hook so that the boot can continue. */
7097 config_intrhook_disestablish(xsoftc
.xpt_config_hook
);
7098 kfree(xsoftc
.xpt_config_hook
, M_CAMXPT
);
7099 xsoftc
.xpt_config_hook
= NULL
;
7101 kfree(context
, M_CAMXPT
);
7105 xpt_uncount_bus (struct cam_eb
*bus
)
7107 struct xpt_task
*task
;
7109 if (bus
->counted_to_config
) {
7110 bus
->counted_to_config
= 0;
7111 if (atomic_fetchadd_int(&busses_to_config
, -1) == 1) {
7112 task
= kmalloc(sizeof(struct xpt_task
), M_CAMXPT
,
7113 M_INTWAIT
| M_ZERO
);
7114 TASK_INIT(&task
->task
, 0, xpt_finishconfig_task
, task
);
7115 taskqueue_enqueue(taskqueue_thread
[mycpuid
],
7122 xpt_finishconfig(struct cam_periph
*periph
, union ccb
*done_ccb
)
7124 struct cam_path
*path
;
7126 path
= done_ccb
->ccb_h
.path
;
7127 CAM_DEBUG(path
, CAM_DEBUG_TRACE
, ("xpt_finishconfig\n"));
7129 switch(done_ccb
->ccb_h
.func_code
) {
7131 if (done_ccb
->ccb_h
.status
== CAM_REQ_CMP
) {
7132 done_ccb
->ccb_h
.func_code
= XPT_SCAN_BUS
;
7133 done_ccb
->ccb_h
.cbfcnp
= xpt_finishconfig
;
7134 done_ccb
->crcn
.flags
= 0;
7135 xpt_action(done_ccb
);
7142 kprintf("CAM: Finished configuring bus:");
7143 if (path
->bus
->sim
) {
7145 path
->bus
->sim
->sim_name
,
7146 path
->bus
->sim
->unit_number
);
7148 kprintf(" (unknown)\n");
7151 xpt_uncount_bus(path
->bus
);
7152 xpt_free_path(path
);
7153 xpt_free_ccb(done_ccb
);
7159 xpt_register_async(int event
, ac_callback_t
*cbfunc
, void *cbarg
,
7160 struct cam_path
*path
)
7162 struct ccb_setasync csa
;
7167 lockmgr(&xsoftc
.xpt_lock
, LK_EXCLUSIVE
);
7168 status
= xpt_create_path(&path
, /*periph*/NULL
, CAM_XPT_PATH_ID
,
7169 CAM_TARGET_WILDCARD
, CAM_LUN_WILDCARD
);
7170 if (status
!= CAM_REQ_CMP
) {
7171 lockmgr(&xsoftc
.xpt_lock
, LK_RELEASE
);
7177 xpt_setup_ccb(&csa
.ccb_h
, path
, /*priority*/5);
7178 csa
.ccb_h
.func_code
= XPT_SASYNC_CB
;
7179 csa
.event_enable
= event
;
7180 csa
.callback
= cbfunc
;
7181 csa
.callback_arg
= cbarg
;
7182 xpt_action((union ccb
*)&csa
);
7183 status
= csa
.ccb_h
.status
;
7185 xpt_free_path(path
);
7186 lockmgr(&xsoftc
.xpt_lock
, LK_RELEASE
);
7192 xptaction(struct cam_sim
*sim
, union ccb
*work_ccb
)
7194 CAM_DEBUG(work_ccb
->ccb_h
.path
, CAM_DEBUG_TRACE
, ("xptaction\n"));
7196 switch (work_ccb
->ccb_h
.func_code
) {
7197 /* Common cases first */
7198 case XPT_PATH_INQ
: /* Path routing inquiry */
7200 struct ccb_pathinq
*cpi
;
7202 cpi
= &work_ccb
->cpi
;
7203 cpi
->version_num
= 1; /* XXX??? */
7204 cpi
->hba_inquiry
= 0;
7205 cpi
->target_sprt
= 0;
7207 cpi
->hba_eng_cnt
= 0;
7208 cpi
->max_target
= 0;
7210 cpi
->initiator_id
= 0;
7211 strncpy(cpi
->sim_vid
, "FreeBSD", SIM_IDLEN
);
7212 strncpy(cpi
->hba_vid
, "", HBA_IDLEN
);
7213 strncpy(cpi
->dev_name
, sim
->sim_name
, DEV_IDLEN
);
7214 cpi
->unit_number
= sim
->unit_number
;
7215 cpi
->bus_id
= sim
->bus_id
;
7216 cpi
->base_transfer_speed
= 0;
7217 cpi
->protocol
= PROTO_UNSPECIFIED
;
7218 cpi
->protocol_version
= PROTO_VERSION_UNSPECIFIED
;
7219 cpi
->transport
= XPORT_UNSPECIFIED
;
7220 cpi
->transport_version
= XPORT_VERSION_UNSPECIFIED
;
7221 cpi
->ccb_h
.status
= CAM_REQ_CMP
;
7226 work_ccb
->ccb_h
.status
= CAM_REQ_INVALID
;
7233 * The xpt as a "controller" has no interrupt sources, so polling
7237 xptpoll(struct cam_sim
*sim
)
7242 xpt_lock_buses(void)
7244 lockmgr(&xsoftc
.xpt_topo_lock
, LK_EXCLUSIVE
);
7248 xpt_unlock_buses(void)
7250 lockmgr(&xsoftc
.xpt_topo_lock
, LK_RELEASE
);
7255 * Should only be called by the machine interrupt dispatch routines,
7256 * so put these prototypes here instead of in the header.
7260 swi_cambio(void *arg
, void *frame
)
7269 struct cam_sim
*sim
;
7271 spin_lock(&cam_simq_spin
);
7273 TAILQ_CONCAT(&queue
, &cam_simq
, links
);
7274 spin_unlock(&cam_simq_spin
);
7276 while ((sim
= TAILQ_FIRST(&queue
)) != NULL
) {
7277 TAILQ_REMOVE(&queue
, sim
, links
);
7279 sim
->flags
&= ~CAM_SIM_ON_DONEQ
;
7280 camisr_runqueue(sim
);
7281 CAM_SIM_UNLOCK(sim
);
7286 camisr_runqueue(struct cam_sim
*sim
)
7288 struct ccb_hdr
*ccb_h
;
7291 spin_lock(&sim
->sim_spin
);
7292 while ((ccb_h
= TAILQ_FIRST(&sim
->sim_doneq
)) != NULL
) {
7293 TAILQ_REMOVE(&sim
->sim_doneq
, ccb_h
, sim_links
.tqe
);
7294 spin_unlock(&sim
->sim_spin
);
7295 ccb_h
->pinfo
.index
= CAM_UNQUEUED_INDEX
;
7297 CAM_DEBUG(ccb_h
->path
, CAM_DEBUG_TRACE
,
7302 if (ccb_h
->flags
& CAM_HIGH_POWER
) {
7303 struct highpowerlist
*hphead
;
7304 union ccb
*send_ccb
;
7306 lockmgr(&xsoftc
.xpt_lock
, LK_EXCLUSIVE
);
7307 hphead
= &xsoftc
.highpowerq
;
7309 send_ccb
= (union ccb
*)STAILQ_FIRST(hphead
);
7312 * Increment the count since this command is done.
7314 xsoftc
.num_highpower
++;
7317 * Any high powered commands queued up?
7319 if (send_ccb
!= NULL
) {
7320 STAILQ_REMOVE_HEAD(hphead
, xpt_links
.stqe
);
7321 lockmgr(&xsoftc
.xpt_lock
, LK_RELEASE
);
7323 xpt_release_devq(send_ccb
->ccb_h
.path
,
7324 /*count*/1, /*runqueue*/TRUE
);
7326 lockmgr(&xsoftc
.xpt_lock
, LK_RELEASE
);
7329 if ((ccb_h
->func_code
& XPT_FC_USER_CCB
) == 0) {
7332 dev
= ccb_h
->path
->device
;
7334 cam_ccbq_ccb_done(&dev
->ccbq
, (union ccb
*)ccb_h
);
7337 * devq may be NULL if this is cam_dead_sim
7339 if (ccb_h
->path
->bus
->sim
->devq
) {
7340 ccb_h
->path
->bus
->sim
->devq
->send_active
--;
7341 ccb_h
->path
->bus
->sim
->devq
->send_openings
++;
7344 if (((dev
->flags
& CAM_DEV_REL_ON_COMPLETE
) != 0
7345 && (ccb_h
->status
&CAM_STATUS_MASK
) != CAM_REQUEUE_REQ
)
7346 || ((dev
->flags
& CAM_DEV_REL_ON_QUEUE_EMPTY
) != 0
7347 && (dev
->ccbq
.dev_active
== 0))) {
7349 xpt_release_devq(ccb_h
->path
, /*count*/1,
7353 if ((dev
->flags
& CAM_DEV_TAG_AFTER_COUNT
) != 0
7354 && (--dev
->tag_delay_count
== 0))
7355 xpt_start_tags(ccb_h
->path
);
7357 if ((dev
->ccbq
.queue
.entries
> 0)
7358 && (dev
->qfrozen_cnt
== 0)
7359 && (device_is_send_queued(dev
) == 0)) {
7360 runq
= xpt_schedule_dev_sendq(ccb_h
->path
->bus
,
7365 if (ccb_h
->status
& CAM_RELEASE_SIMQ
) {
7366 xpt_release_simq(ccb_h
->path
->bus
->sim
,
7368 ccb_h
->status
&= ~CAM_RELEASE_SIMQ
;
7372 if ((ccb_h
->flags
& CAM_DEV_QFRZDIS
)
7373 && (ccb_h
->status
& CAM_DEV_QFRZN
)) {
7374 xpt_release_devq(ccb_h
->path
, /*count*/1,
7376 ccb_h
->status
&= ~CAM_DEV_QFRZN
;
7378 xpt_run_dev_sendq(ccb_h
->path
->bus
);
7381 /* Call the peripheral driver's callback */
7382 (*ccb_h
->cbfcnp
)(ccb_h
->path
->periph
, (union ccb
*)ccb_h
);
7383 spin_lock(&sim
->sim_spin
);
7385 spin_unlock(&sim
->sim_spin
);
7389 * The dead_sim isn't completely hooked into CAM, we have to make sure
7390 * the doneq is cleared after calling xpt_done() so cam_periph_ccbwait()
7394 dead_sim_action(struct cam_sim
*sim
, union ccb
*ccb
)
7397 ccb
->ccb_h
.status
= CAM_DEV_NOT_THERE
;
7399 camisr_runqueue(sim
);
7403 dead_sim_poll(struct cam_sim
*sim
)