2 * Implementation of the Common Access Method Transport (XPT) layer.
4 * Copyright (c) 1997, 1998, 1999 Justin T. Gibbs.
5 * Copyright (c) 1997, 1998, 1999 Kenneth D. Merry.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions, and the following disclaimer,
13 * without modification, immediately at the beginning of the file.
14 * 2. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
21 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * $FreeBSD: src/sys/cam/cam_xpt.c,v 1.80.2.18 2002/12/09 17:31:55 gibbs Exp $
30 * $DragonFly: src/sys/bus/cam/cam_xpt.c,v 1.68 2008/08/23 17:13:31 pavalos Exp $
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/types.h>
35 #include <sys/malloc.h>
36 #include <sys/kernel.h>
39 #include <sys/device.h>
40 #include <sys/fcntl.h>
42 #include <sys/devicestat.h>
43 #include <sys/interrupt.h>
45 #include <sys/taskqueue.h>
47 #include <sys/thread.h>
49 #include <sys/spinlock.h>
50 #include <sys/thread2.h>
51 #include <sys/spinlock2.h>
53 #include <machine/clock.h>
54 #include <machine/stdarg.h>
58 #include "cam_periph.h"
61 #include "cam_xpt_sim.h"
62 #include "cam_xpt_periph.h"
63 #include "cam_debug.h"
65 #include "scsi/scsi_all.h"
66 #include "scsi/scsi_message.h"
67 #include "scsi/scsi_pass.h"
68 #include <sys/kthread.h>
71 /* Datastructures internal to the xpt layer */
72 MALLOC_DEFINE(M_CAMXPT
, "CAM XPT", "CAM XPT buffers");
74 /* Object for defering XPT actions to a taskqueue */
82 * Definition of an async handler callback block. These are used to add
83 * SIMs and peripherals to the async callback lists.
86 SLIST_ENTRY(async_node
) links
;
87 u_int32_t event_enable
; /* Async Event enables */
88 void (*callback
)(void *arg
, u_int32_t code
,
89 struct cam_path
*path
, void *args
);
93 SLIST_HEAD(async_list
, async_node
);
94 SLIST_HEAD(periph_list
, cam_periph
);
97 * This is the maximum number of high powered commands (e.g. start unit)
98 * that can be outstanding at a particular time.
100 #ifndef CAM_MAX_HIGHPOWER
101 #define CAM_MAX_HIGHPOWER 4
105 * Structure for queueing a device in a run queue.
106 * There is one run queue for allocating new ccbs,
107 * and another for sending ccbs to the controller.
109 struct cam_ed_qinfo
{
111 struct cam_ed
*device
;
115 * The CAM EDT (Existing Device Table) contains the device information for
116 * all devices for all busses in the system. The table contains a
117 * cam_ed structure for each device on the bus.
120 TAILQ_ENTRY(cam_ed
) links
;
121 struct cam_ed_qinfo alloc_ccb_entry
;
122 struct cam_ed_qinfo send_ccb_entry
;
123 struct cam_et
*target
;
127 * Queue of type drivers wanting to do
128 * work on this device.
130 struct cam_ccbq ccbq
; /* Queue of pending ccbs */
131 struct async_list asyncs
; /* Async callback info for this B/T/L */
132 struct periph_list periphs
; /* All attached devices */
133 u_int generation
; /* Generation number */
134 struct cam_periph
*owner
; /* Peripheral driver's ownership tag */
135 struct xpt_quirk_entry
*quirk
; /* Oddities about this device */
136 /* Storage for the inquiry data */
138 u_int protocol_version
;
140 u_int transport_version
;
141 struct scsi_inquiry_data inq_data
;
142 u_int8_t inq_flags
; /*
143 * Current settings for inquiry flags.
144 * This allows us to override settings
145 * like disconnection and tagged
146 * queuing for a device.
148 u_int8_t queue_flags
; /* Queue flags from the control page */
149 u_int8_t serial_num_len
;
150 u_int8_t
*serial_num
;
151 u_int32_t qfrozen_cnt
;
153 #define CAM_DEV_UNCONFIGURED 0x01
154 #define CAM_DEV_REL_TIMEOUT_PENDING 0x02
155 #define CAM_DEV_REL_ON_COMPLETE 0x04
156 #define CAM_DEV_REL_ON_QUEUE_EMPTY 0x08
157 #define CAM_DEV_RESIZE_QUEUE_NEEDED 0x10
158 #define CAM_DEV_TAG_AFTER_COUNT 0x20
159 #define CAM_DEV_INQUIRY_DATA_VALID 0x40
160 #define CAM_DEV_IN_DV 0x80
161 #define CAM_DEV_DV_HIT_BOTTOM 0x100
162 u_int32_t tag_delay_count
;
163 #define CAM_TAG_DELAY_COUNT 5
164 u_int32_t tag_saved_openings
;
166 struct callout callout
;
170 * Each target is represented by an ET (Existing Target). These
171 * entries are created when a target is successfully probed with an
172 * identify, and removed when a device fails to respond after a number
173 * of retries, or a bus rescan finds the device missing.
176 TAILQ_HEAD(, cam_ed
) ed_entries
;
177 TAILQ_ENTRY(cam_et
) links
;
179 target_id_t target_id
;
182 struct timeval last_reset
; /* uptime of last reset */
186 * Each bus is represented by an EB (Existing Bus). These entries
187 * are created by calls to xpt_bus_register and deleted by calls to
188 * xpt_bus_deregister.
191 TAILQ_HEAD(, cam_et
) et_entries
;
192 TAILQ_ENTRY(cam_eb
) links
;
195 struct timeval last_reset
; /* uptime of last reset */
197 #define CAM_EB_RUNQ_SCHEDULED 0x01
203 struct cam_periph
*periph
;
205 struct cam_et
*target
;
206 struct cam_ed
*device
;
209 struct xpt_quirk_entry
{
210 struct scsi_inquiry_pattern inq_pat
;
212 #define CAM_QUIRK_NOLUNS 0x01
213 #define CAM_QUIRK_NOSERIAL 0x02
214 #define CAM_QUIRK_HILUNS 0x04
215 #define CAM_QUIRK_NOHILUNS 0x08
220 static int cam_srch_hi
= 0;
221 TUNABLE_INT("kern.cam.cam_srch_hi", &cam_srch_hi
);
222 static int sysctl_cam_search_luns(SYSCTL_HANDLER_ARGS
);
223 SYSCTL_PROC(_kern_cam
, OID_AUTO
, cam_srch_hi
, CTLTYPE_INT
|CTLFLAG_RW
, 0, 0,
224 sysctl_cam_search_luns
, "I",
225 "allow search above LUN 7 for SCSI3 and greater devices");
227 #define CAM_SCSI2_MAXLUN 8
229 * If we're not quirked to search <= the first 8 luns
230 * and we are either quirked to search above lun 8,
231 * or we're > SCSI-2 and we've enabled hilun searching,
232 * or we're > SCSI-2 and the last lun was a success,
233 * we can look for luns above lun 8.
235 #define CAN_SRCH_HI_SPARSE(dv) \
236 (((dv->quirk->quirks & CAM_QUIRK_NOHILUNS) == 0) \
237 && ((dv->quirk->quirks & CAM_QUIRK_HILUNS) \
238 || (SID_ANSI_REV(&dv->inq_data) > SCSI_REV_2 && cam_srch_hi)))
240 #define CAN_SRCH_HI_DENSE(dv) \
241 (((dv->quirk->quirks & CAM_QUIRK_NOHILUNS) == 0) \
242 && ((dv->quirk->quirks & CAM_QUIRK_HILUNS) \
243 || (SID_ANSI_REV(&dv->inq_data) > SCSI_REV_2)))
251 u_int32_t xpt_generation
;
253 /* number of high powered commands that can go through right now */
254 STAILQ_HEAD(highpowerlist
, ccb_hdr
) highpowerq
;
257 /* queue for handling async rescan requests. */
258 TAILQ_HEAD(, ccb_hdr
) ccb_scanq
;
259 int ccb_scanq_running
;
261 /* Registered busses */
262 TAILQ_HEAD(,cam_eb
) xpt_busses
;
263 u_int bus_generation
;
265 struct intr_config_hook
*xpt_config_hook
;
267 struct lock xpt_topo_lock
;
268 struct lock xpt_lock
;
271 static const char quantum
[] = "QUANTUM";
272 static const char sony
[] = "SONY";
273 static const char west_digital
[] = "WDIGTL";
274 static const char samsung
[] = "SAMSUNG";
275 static const char seagate
[] = "SEAGATE";
276 static const char microp
[] = "MICROP";
278 static struct xpt_quirk_entry xpt_quirk_table
[] =
281 /* Reports QUEUE FULL for temporary resource shortages */
282 { T_DIRECT
, SIP_MEDIA_FIXED
, quantum
, "XP39100*", "*" },
283 /*quirks*/0, /*mintags*/24, /*maxtags*/32
286 /* Reports QUEUE FULL for temporary resource shortages */
287 { T_DIRECT
, SIP_MEDIA_FIXED
, quantum
, "XP34550*", "*" },
288 /*quirks*/0, /*mintags*/24, /*maxtags*/32
291 /* Reports QUEUE FULL for temporary resource shortages */
292 { T_DIRECT
, SIP_MEDIA_FIXED
, quantum
, "XP32275*", "*" },
293 /*quirks*/0, /*mintags*/24, /*maxtags*/32
296 /* Broken tagged queuing drive */
297 { T_DIRECT
, SIP_MEDIA_FIXED
, microp
, "4421-07*", "*" },
298 /*quirks*/0, /*mintags*/0, /*maxtags*/0
301 /* Broken tagged queuing drive */
302 { T_DIRECT
, SIP_MEDIA_FIXED
, "HP", "C372*", "*" },
303 /*quirks*/0, /*mintags*/0, /*maxtags*/0
306 /* Broken tagged queuing drive */
307 { T_DIRECT
, SIP_MEDIA_FIXED
, microp
, "3391*", "x43h" },
308 /*quirks*/0, /*mintags*/0, /*maxtags*/0
312 * Unfortunately, the Quantum Atlas III has the same
313 * problem as the Atlas II drives above.
314 * Reported by: "Johan Granlund" <johan@granlund.nu>
316 * For future reference, the drive with the problem was:
317 * QUANTUM QM39100TD-SW N1B0
319 * It's possible that Quantum will fix the problem in later
320 * firmware revisions. If that happens, the quirk entry
321 * will need to be made specific to the firmware revisions
325 /* Reports QUEUE FULL for temporary resource shortages */
326 { T_DIRECT
, SIP_MEDIA_FIXED
, quantum
, "QM39100*", "*" },
327 /*quirks*/0, /*mintags*/24, /*maxtags*/32
331 * 18 Gig Atlas III, same problem as the 9G version.
332 * Reported by: Andre Albsmeier
333 * <andre.albsmeier@mchp.siemens.de>
335 * For future reference, the drive with the problem was:
336 * QUANTUM QM318000TD-S N491
338 /* Reports QUEUE FULL for temporary resource shortages */
339 { T_DIRECT
, SIP_MEDIA_FIXED
, quantum
, "QM318000*", "*" },
340 /*quirks*/0, /*mintags*/24, /*maxtags*/32
344 * Broken tagged queuing drive
345 * Reported by: Bret Ford <bford@uop.cs.uop.edu>
346 * and: Martin Renters <martin@tdc.on.ca>
348 { T_DIRECT
, SIP_MEDIA_FIXED
, seagate
, "ST410800*", "71*" },
349 /*quirks*/0, /*mintags*/0, /*maxtags*/0
352 * The Seagate Medalist Pro drives have very poor write
353 * performance with anything more than 2 tags.
355 * Reported by: Paul van der Zwan <paulz@trantor.xs4all.nl>
356 * Drive: <SEAGATE ST36530N 1444>
358 * Reported by: Jeremy Lea <reg@shale.csir.co.za>
359 * Drive: <SEAGATE ST34520W 1281>
361 * No one has actually reported that the 9G version
362 * (ST39140*) of the Medalist Pro has the same problem, but
363 * we're assuming that it does because the 4G and 6.5G
364 * versions of the drive are broken.
367 { T_DIRECT
, SIP_MEDIA_FIXED
, seagate
, "ST34520*", "*"},
368 /*quirks*/0, /*mintags*/2, /*maxtags*/2
371 { T_DIRECT
, SIP_MEDIA_FIXED
, seagate
, "ST36530*", "*"},
372 /*quirks*/0, /*mintags*/2, /*maxtags*/2
375 { T_DIRECT
, SIP_MEDIA_FIXED
, seagate
, "ST39140*", "*"},
376 /*quirks*/0, /*mintags*/2, /*maxtags*/2
380 * Slow when tagged queueing is enabled. Write performance
381 * steadily drops off with more and more concurrent
382 * transactions. Best sequential write performance with
383 * tagged queueing turned off and write caching turned on.
386 * Submitted by: Hideaki Okada <hokada@isl.melco.co.jp>
387 * Drive: DCAS-34330 w/ "S65A" firmware.
389 * The drive with the problem had the "S65A" firmware
390 * revision, and has also been reported (by Stephen J.
391 * Roznowski <sjr@home.net>) for a drive with the "S61A"
394 * Although no one has reported problems with the 2 gig
395 * version of the DCAS drive, the assumption is that it
396 * has the same problems as the 4 gig version. Therefore
397 * this quirk entries disables tagged queueing for all
400 { T_DIRECT
, SIP_MEDIA_FIXED
, "IBM", "DCAS*", "*" },
401 /*quirks*/0, /*mintags*/0, /*maxtags*/0
404 /* Broken tagged queuing drive */
405 { T_DIRECT
, SIP_MEDIA_REMOVABLE
, "iomega", "jaz*", "*" },
406 /*quirks*/0, /*mintags*/0, /*maxtags*/0
409 /* Broken tagged queuing drive */
410 { T_DIRECT
, SIP_MEDIA_FIXED
, "CONNER", "CFP2107*", "*" },
411 /*quirks*/0, /*mintags*/0, /*maxtags*/0
414 /* This does not support other than LUN 0 */
415 { T_DIRECT
, SIP_MEDIA_FIXED
, "VMware*", "*", "*" },
416 CAM_QUIRK_NOLUNS
, /*mintags*/2, /*maxtags*/255
420 * Broken tagged queuing drive.
422 * NAKAJI Hiroyuki <nakaji@zeisei.dpri.kyoto-u.ac.jp>
425 { T_DIRECT
, SIP_MEDIA_FIXED
, samsung
, "WN34324U*", "*" },
426 /*quirks*/0, /*mintags*/0, /*maxtags*/0
430 * Slow when tagged queueing is enabled. (1.5MB/sec versus
432 * Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
433 * Best performance with these drives is achieved with
434 * tagged queueing turned off, and write caching turned on.
436 { T_DIRECT
, SIP_MEDIA_FIXED
, west_digital
, "WDE*", "*" },
437 /*quirks*/0, /*mintags*/0, /*maxtags*/0
441 * Slow when tagged queueing is enabled. (1.5MB/sec versus
443 * Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
444 * Best performance with these drives is achieved with
445 * tagged queueing turned off, and write caching turned on.
447 { T_DIRECT
, SIP_MEDIA_FIXED
, west_digital
, "ENTERPRISE", "*" },
448 /*quirks*/0, /*mintags*/0, /*maxtags*/0
452 * Doesn't handle queue full condition correctly,
453 * so we need to limit maxtags to what the device
454 * can handle instead of determining this automatically.
456 { T_DIRECT
, SIP_MEDIA_FIXED
, samsung
, "WN321010S*", "*" },
457 /*quirks*/0, /*mintags*/2, /*maxtags*/32
460 /* Really only one LUN */
461 { T_ENCLOSURE
, SIP_MEDIA_FIXED
, "SUN", "SENA", "*" },
462 CAM_QUIRK_NOLUNS
, /*mintags*/0, /*maxtags*/0
465 /* I can't believe we need a quirk for DPT volumes. */
466 { T_ANY
, SIP_MEDIA_FIXED
|SIP_MEDIA_REMOVABLE
, "DPT", "*", "*" },
468 /*mintags*/0, /*maxtags*/255
472 * Many Sony CDROM drives don't like multi-LUN probing.
474 { T_CDROM
, SIP_MEDIA_REMOVABLE
, sony
, "CD-ROM CDU*", "*" },
475 CAM_QUIRK_NOLUNS
, /*mintags*/0, /*maxtags*/0
479 * This drive doesn't like multiple LUN probing.
480 * Submitted by: Parag Patel <parag@cgt.com>
482 { T_WORM
, SIP_MEDIA_REMOVABLE
, sony
, "CD-R CDU9*", "*" },
483 CAM_QUIRK_NOLUNS
, /*mintags*/0, /*maxtags*/0
486 { T_WORM
, SIP_MEDIA_REMOVABLE
, "YAMAHA", "CDR100*", "*" },
487 CAM_QUIRK_NOLUNS
, /*mintags*/0, /*maxtags*/0
491 * The 8200 doesn't like multi-lun probing, and probably
492 * don't like serial number requests either.
495 T_SEQUENTIAL
, SIP_MEDIA_REMOVABLE
, "EXABYTE",
498 CAM_QUIRK_NOLUNS
, /*mintags*/0, /*maxtags*/0
502 * Let's try the same as above, but for a drive that says
503 * it's an IPL-6860 but is actually an EXB 8200.
506 T_SEQUENTIAL
, SIP_MEDIA_REMOVABLE
, "EXABYTE",
509 CAM_QUIRK_NOLUNS
, /*mintags*/0, /*maxtags*/0
513 * These Hitachi drives don't like multi-lun probing.
514 * The PR submitter has a DK319H, but says that the Linux
515 * kernel has a similar work-around for the DK312 and DK314,
516 * so all DK31* drives are quirked here.
518 * Submitted by: Paul Haddad <paul@pth.com>
520 { T_DIRECT
, SIP_MEDIA_FIXED
, "HITACHI", "DK31*", "*" },
521 CAM_QUIRK_NOLUNS
, /*mintags*/2, /*maxtags*/255
525 * The Hitachi CJ series with J8A8 firmware apparantly has
526 * problems with tagged commands.
528 * Reported by: amagai@nue.org
530 { T_DIRECT
, SIP_MEDIA_FIXED
, "HITACHI", "DK32CJ*", "J8A8" },
531 CAM_QUIRK_NOLUNS
, /*mintags*/0, /*maxtags*/0
535 * These are the large storage arrays.
536 * Submitted by: William Carrel <william.carrel@infospace.com>
538 { T_DIRECT
, SIP_MEDIA_FIXED
, "HITACHI", "OPEN*", "*" },
539 CAM_QUIRK_HILUNS
, 2, 1024
543 * This old revision of the TDC3600 is also SCSI-1, and
544 * hangs upon serial number probing.
547 T_SEQUENTIAL
, SIP_MEDIA_REMOVABLE
, "TANDBERG",
550 CAM_QUIRK_NOSERIAL
, /*mintags*/0, /*maxtags*/0
554 * Would repond to all LUNs if asked for.
557 T_SEQUENTIAL
, SIP_MEDIA_REMOVABLE
, "CALIPER",
560 CAM_QUIRK_NOLUNS
, /*mintags*/0, /*maxtags*/0
564 * Would repond to all LUNs if asked for.
567 T_SEQUENTIAL
, SIP_MEDIA_REMOVABLE
, "KENNEDY",
570 CAM_QUIRK_NOLUNS
, /*mintags*/0, /*maxtags*/0
573 /* Submitted by: Matthew Dodd <winter@jurai.net> */
574 { T_PROCESSOR
, SIP_MEDIA_FIXED
, "Cabletrn", "EA41*", "*" },
575 CAM_QUIRK_NOLUNS
, /*mintags*/0, /*maxtags*/0
578 /* Submitted by: Matthew Dodd <winter@jurai.net> */
579 { T_PROCESSOR
, SIP_MEDIA_FIXED
, "CABLETRN", "EA41*", "*" },
580 CAM_QUIRK_NOLUNS
, /*mintags*/0, /*maxtags*/0
583 /* TeraSolutions special settings for TRC-22 RAID */
584 { T_DIRECT
, SIP_MEDIA_FIXED
, "TERASOLU", "TRC-22", "*" },
585 /*quirks*/0, /*mintags*/55, /*maxtags*/255
588 /* Veritas Storage Appliance */
589 { T_DIRECT
, SIP_MEDIA_FIXED
, "VERITAS", "*", "*" },
590 CAM_QUIRK_HILUNS
, /*mintags*/2, /*maxtags*/1024
594 * Would respond to all LUNs. Device type and removable
595 * flag are jumper-selectable.
597 { T_ANY
, SIP_MEDIA_REMOVABLE
|SIP_MEDIA_FIXED
, "MaxOptix",
600 CAM_QUIRK_NOLUNS
, /*mintags*/0, /*maxtags*/0
603 /* EasyRAID E5A aka. areca ARC-6010 */
604 { T_DIRECT
, SIP_MEDIA_FIXED
, "easyRAID", "*", "*" },
605 CAM_QUIRK_NOHILUNS
, /*mintags*/2, /*maxtags*/255
608 { T_ENCLOSURE
, SIP_MEDIA_FIXED
, "DP", "BACKPLANE", "*" },
609 CAM_QUIRK_NOLUNS
, /*mintags*/0, /*maxtags*/0
612 /* Default tagged queuing parameters for all devices */
614 T_ANY
, SIP_MEDIA_REMOVABLE
|SIP_MEDIA_FIXED
,
615 /*vendor*/"*", /*product*/"*", /*revision*/"*"
617 /*quirks*/0, /*mintags*/2, /*maxtags*/255
621 static const int xpt_quirk_table_size
=
622 sizeof(xpt_quirk_table
) / sizeof(*xpt_quirk_table
);
626 DM_RET_FLAG_MASK
= 0x0f,
629 DM_RET_DESCEND
= 0x20,
631 DM_RET_ACTION_MASK
= 0xf0
639 } xpt_traverse_depth
;
641 struct xpt_traverse_config
{
642 xpt_traverse_depth depth
;
647 typedef int xpt_busfunc_t (struct cam_eb
*bus
, void *arg
);
648 typedef int xpt_targetfunc_t (struct cam_et
*target
, void *arg
);
649 typedef int xpt_devicefunc_t (struct cam_ed
*device
, void *arg
);
650 typedef int xpt_periphfunc_t (struct cam_periph
*periph
, void *arg
);
651 typedef int xpt_pdrvfunc_t (struct periph_driver
**pdrv
, void *arg
);
653 /* Transport layer configuration information */
654 static struct xpt_softc xsoftc
;
656 /* Queues for our software interrupt handler */
657 typedef TAILQ_HEAD(cam_isrq
, ccb_hdr
) cam_isrq_t
;
658 typedef TAILQ_HEAD(cam_simq
, cam_sim
) cam_simq_t
;
659 static cam_simq_t cam_simq
;
660 static struct spinlock cam_simq_spin
;
662 struct cam_periph
*xpt_periph
;
664 static periph_init_t xpt_periph_init
;
666 static periph_init_t probe_periph_init
;
668 static struct periph_driver xpt_driver
=
670 xpt_periph_init
, "xpt",
671 TAILQ_HEAD_INITIALIZER(xpt_driver
.units
)
674 static struct periph_driver probe_driver
=
676 probe_periph_init
, "probe",
677 TAILQ_HEAD_INITIALIZER(probe_driver
.units
)
680 PERIPHDRIVER_DECLARE(xpt
, xpt_driver
);
681 PERIPHDRIVER_DECLARE(probe
, probe_driver
);
683 #define XPT_CDEV_MAJOR 104
685 static d_open_t xptopen
;
686 static d_close_t xptclose
;
687 static d_ioctl_t xptioctl
;
689 static struct dev_ops xpt_ops
= {
690 { "xpt", XPT_CDEV_MAJOR
, 0 },
696 static void dead_sim_action(struct cam_sim
*sim
, union ccb
*ccb
);
697 static void dead_sim_poll(struct cam_sim
*sim
);
699 /* Dummy SIM that is used when the real one has gone. */
700 static struct cam_sim cam_dead_sim
;
701 static struct lock cam_dead_lock
;
703 /* Storage for debugging datastructures */
705 struct cam_path
*cam_dpath
;
706 u_int32_t cam_dflags
;
707 u_int32_t cam_debug_delay
;
710 #if defined(CAM_DEBUG_FLAGS) && !defined(CAMDEBUG)
711 #error "You must have options CAMDEBUG to use options CAM_DEBUG_FLAGS"
715 * In order to enable the CAM_DEBUG_* options, the user must have CAMDEBUG
716 * enabled. Also, the user must have either none, or all of CAM_DEBUG_BUS,
717 * CAM_DEBUG_TARGET, and CAM_DEBUG_LUN specified.
719 #if defined(CAM_DEBUG_BUS) || defined(CAM_DEBUG_TARGET) \
720 || defined(CAM_DEBUG_LUN)
722 #if !defined(CAM_DEBUG_BUS) || !defined(CAM_DEBUG_TARGET) \
723 || !defined(CAM_DEBUG_LUN)
724 #error "You must define all or none of CAM_DEBUG_BUS, CAM_DEBUG_TARGET \
726 #endif /* !CAM_DEBUG_BUS || !CAM_DEBUG_TARGET || !CAM_DEBUG_LUN */
727 #else /* !CAMDEBUG */
728 #error "You must use options CAMDEBUG if you use the CAM_DEBUG_* options"
729 #endif /* CAMDEBUG */
730 #endif /* CAM_DEBUG_BUS || CAM_DEBUG_TARGET || CAM_DEBUG_LUN */
732 /* Our boot-time initialization hook */
733 static int cam_module_event_handler(module_t
, int /*modeventtype_t*/, void *);
735 static moduledata_t cam_moduledata
= {
737 cam_module_event_handler
,
741 static int xpt_init(void *);
743 DECLARE_MODULE(cam
, cam_moduledata
, SI_SUB_CONFIGURE
, SI_ORDER_SECOND
);
744 MODULE_VERSION(cam
, 1);
747 static cam_status
xpt_compile_path(struct cam_path
*new_path
,
748 struct cam_periph
*perph
,
750 target_id_t target_id
,
753 static void xpt_release_path(struct cam_path
*path
);
755 static void xpt_async_bcast(struct async_list
*async_head
,
756 u_int32_t async_code
,
757 struct cam_path
*path
,
759 static void xpt_dev_async(u_int32_t async_code
,
761 struct cam_et
*target
,
762 struct cam_ed
*device
,
764 static path_id_t
xptnextfreepathid(void);
765 static path_id_t
xptpathid(const char *sim_name
, int sim_unit
, int sim_bus
);
766 static union ccb
*xpt_get_ccb(struct cam_ed
*device
);
767 static int xpt_schedule_dev(struct camq
*queue
, cam_pinfo
*dev_pinfo
,
768 u_int32_t new_priority
);
769 static void xpt_run_dev_allocq(struct cam_eb
*bus
);
770 static void xpt_run_dev_sendq(struct cam_eb
*bus
);
771 static timeout_t xpt_release_devq_timeout
;
772 static void xpt_release_bus(struct cam_eb
*bus
);
773 static void xpt_release_devq_device(struct cam_ed
*dev
, u_int count
,
775 static struct cam_et
*
776 xpt_alloc_target(struct cam_eb
*bus
, target_id_t target_id
);
777 static void xpt_release_target(struct cam_eb
*bus
, struct cam_et
*target
);
778 static struct cam_ed
*
779 xpt_alloc_device(struct cam_eb
*bus
, struct cam_et
*target
,
781 static void xpt_release_device(struct cam_eb
*bus
, struct cam_et
*target
,
782 struct cam_ed
*device
);
783 static u_int32_t
xpt_dev_ccbq_resize(struct cam_path
*path
, int newopenings
);
784 static struct cam_eb
*
785 xpt_find_bus(path_id_t path_id
);
786 static struct cam_et
*
787 xpt_find_target(struct cam_eb
*bus
, target_id_t target_id
);
788 static struct cam_ed
*
789 xpt_find_device(struct cam_et
*target
, lun_id_t lun_id
);
790 static void xpt_scan_bus(struct cam_periph
*periph
, union ccb
*ccb
);
791 static void xpt_scan_lun(struct cam_periph
*periph
,
792 struct cam_path
*path
, cam_flags flags
,
794 static void xptscandone(struct cam_periph
*periph
, union ccb
*done_ccb
);
795 static xpt_busfunc_t xptconfigbuscountfunc
;
796 static xpt_busfunc_t xptconfigfunc
;
797 static void xpt_config(void *arg
);
798 static xpt_devicefunc_t xptpassannouncefunc
;
799 static void xpt_finishconfig(struct cam_periph
*periph
, union ccb
*ccb
);
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
)
1397 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
;
1413 CAM_SIM_UNLOCK(sim
);
1417 xsoftc
.ccb_scanq_running
= 0;
1418 tsleep_interlock(&xsoftc
.ccb_scanq
, 0);
1420 tsleep(&xsoftc
.ccb_scanq
, PINTERLOCKED
, "ccb_scanq", 0);
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
);
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
);
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 kprintf("xpt_init: xpt_bus_register failed with status %#x,"
1494 " failing attach\n", status
);
1499 * Looking at the XPT from the SIM layer, the XPT is
1500 * the equivelent of a peripheral driver. Allocate
1501 * a peripheral driver entry for us.
1503 if ((status
= xpt_create_path(&path
, NULL
, CAM_XPT_PATH_ID
,
1504 CAM_TARGET_WILDCARD
,
1505 CAM_LUN_WILDCARD
)) != CAM_REQ_CMP
) {
1506 kprintf("xpt_init: xpt_create_path failed with status %#x,"
1507 " failing attach\n", status
);
1511 cam_periph_alloc(xptregister
, NULL
, NULL
, NULL
, "xpt", CAM_PERIPH_BIO
,
1512 path
, NULL
, 0, xpt_sim
);
1513 xpt_free_path(path
);
1515 lockmgr(&xsoftc
.xpt_lock
, LK_RELEASE
);
1518 * Register a callback for when interrupts are enabled.
1520 xsoftc
.xpt_config_hook
= kmalloc(sizeof(struct intr_config_hook
),
1521 M_CAMXPT
, M_INTWAIT
| M_ZERO
);
1522 xsoftc
.xpt_config_hook
->ich_func
= xpt_config
;
1523 xsoftc
.xpt_config_hook
->ich_desc
= "xpt";
1524 xsoftc
.xpt_config_hook
->ich_order
= 1000;
1525 if (config_intrhook_establish(xsoftc
.xpt_config_hook
) != 0) {
1526 kfree (xsoftc
.xpt_config_hook
, M_CAMXPT
);
1527 kprintf("xpt_init: config_intrhook_establish failed "
1528 "- failing attach\n");
1531 /* fire up rescan thread */
1532 if (kthread_create(xpt_scanner_thread
, NULL
, NULL
, "xpt_thrd")) {
1533 kprintf("xpt_init: failed to create rescan thread\n");
1535 /* Install our software interrupt handlers */
1536 register_swi(SWI_CAMBIO
, swi_cambio
, NULL
, "swi_cambio", NULL
);
1542 xptregister(struct cam_periph
*periph
, void *arg
)
1544 struct cam_sim
*xpt_sim
;
1546 if (periph
== NULL
) {
1547 kprintf("xptregister: periph was NULL!!\n");
1548 return(CAM_REQ_CMP_ERR
);
1551 xpt_sim
= (struct cam_sim
*)arg
;
1552 xpt_sim
->softc
= periph
;
1553 xpt_periph
= periph
;
1554 periph
->softc
= NULL
;
1556 return(CAM_REQ_CMP
);
1560 xpt_add_periph(struct cam_periph
*periph
)
1562 struct cam_ed
*device
;
1564 struct periph_list
*periph_head
;
1566 sim_lock_assert_owned(periph
->sim
->lock
);
1568 device
= periph
->path
->device
;
1570 periph_head
= &device
->periphs
;
1572 status
= CAM_REQ_CMP
;
1574 if (device
!= NULL
) {
1576 * Make room for this peripheral
1577 * so it will fit in the queue
1578 * when it's scheduled to run
1580 status
= camq_resize(&device
->drvq
,
1581 device
->drvq
.array_size
+ 1);
1583 device
->generation
++;
1585 SLIST_INSERT_HEAD(periph_head
, periph
, periph_links
);
1588 lockmgr(&xsoftc
.xpt_topo_lock
, LK_EXCLUSIVE
);
1589 xsoftc
.xpt_generation
++;
1590 lockmgr(&xsoftc
.xpt_topo_lock
, LK_RELEASE
);
1596 xpt_remove_periph(struct cam_periph
*periph
)
1598 struct cam_ed
*device
;
1600 sim_lock_assert_owned(periph
->sim
->lock
);
1602 device
= periph
->path
->device
;
1604 if (device
!= NULL
) {
1605 struct periph_list
*periph_head
;
1607 periph_head
= &device
->periphs
;
1609 /* Release the slot for this peripheral */
1610 camq_resize(&device
->drvq
, device
->drvq
.array_size
- 1);
1612 device
->generation
++;
1614 SLIST_REMOVE(periph_head
, periph
, cam_periph
, periph_links
);
1617 lockmgr(&xsoftc
.xpt_topo_lock
, LK_EXCLUSIVE
);
1618 xsoftc
.xpt_generation
++;
1619 lockmgr(&xsoftc
.xpt_topo_lock
, LK_RELEASE
);
1623 xpt_announce_periph(struct cam_periph
*periph
, char *announce_string
)
1625 struct ccb_pathinq cpi
;
1626 struct ccb_trans_settings cts
;
1627 struct cam_path
*path
;
1632 sim_lock_assert_owned(periph
->sim
->lock
);
1634 path
= periph
->path
;
1636 /* Report basic attachment and inquiry data */
1637 kprintf("%s%d at %s%d bus %d target %d lun %d\n",
1638 periph
->periph_name
, periph
->unit_number
,
1639 path
->bus
->sim
->sim_name
,
1640 path
->bus
->sim
->unit_number
,
1641 path
->bus
->sim
->bus_id
,
1642 path
->target
->target_id
,
1643 path
->device
->lun_id
);
1644 kprintf("%s%d: ", periph
->periph_name
, periph
->unit_number
);
1645 scsi_print_inquiry(&path
->device
->inq_data
);
1647 /* Report serial number */
1648 if (path
->device
->serial_num_len
> 0) {
1649 /* Don't wrap the screen - print only the first 60 chars */
1650 kprintf("%s%d: Serial Number %.60s\n", periph
->periph_name
,
1651 periph
->unit_number
, path
->device
->serial_num
);
1654 /* Acquire and report transfer speed */
1655 xpt_setup_ccb(&cts
.ccb_h
, path
, /*priority*/1);
1656 cts
.ccb_h
.func_code
= XPT_GET_TRAN_SETTINGS
;
1657 cts
.type
= CTS_TYPE_CURRENT_SETTINGS
;
1658 xpt_action((union ccb
*)&cts
);
1659 if ((cts
.ccb_h
.status
& CAM_STATUS_MASK
) != CAM_REQ_CMP
) {
1663 /* Ask the SIM for its base transfer speed */
1664 xpt_setup_ccb(&cpi
.ccb_h
, path
, /*priority*/1);
1665 cpi
.ccb_h
.func_code
= XPT_PATH_INQ
;
1666 xpt_action((union ccb
*)&cpi
);
1668 speed
= cpi
.base_transfer_speed
;
1670 if (cts
.ccb_h
.status
== CAM_REQ_CMP
&& cts
.transport
== XPORT_SPI
) {
1671 struct ccb_trans_settings_spi
*spi
;
1673 spi
= &cts
.xport_specific
.spi
;
1674 if ((spi
->valid
& CTS_SPI_VALID_SYNC_OFFSET
) != 0
1675 && spi
->sync_offset
!= 0) {
1676 freq
= scsi_calc_syncsrate(spi
->sync_period
);
1680 if ((spi
->valid
& CTS_SPI_VALID_BUS_WIDTH
) != 0)
1681 speed
*= (0x01 << spi
->bus_width
);
1683 if (cts
.ccb_h
.status
== CAM_REQ_CMP
&& cts
.transport
== XPORT_FC
) {
1684 struct ccb_trans_settings_fc
*fc
= &cts
.xport_specific
.fc
;
1685 if (fc
->valid
& CTS_FC_VALID_SPEED
) {
1686 speed
= fc
->bitrate
;
1690 if (cts
.ccb_h
.status
== CAM_REQ_CMP
&& cts
.transport
== XPORT_SAS
) {
1691 struct ccb_trans_settings_sas
*sas
= &cts
.xport_specific
.sas
;
1692 if (sas
->valid
& CTS_SAS_VALID_SPEED
) {
1693 speed
= sas
->bitrate
;
1699 kprintf("%s%d: %d.%03dMB/s transfers",
1700 periph
->periph_name
, periph
->unit_number
,
1703 kprintf("%s%d: %dKB/s transfers", periph
->periph_name
,
1704 periph
->unit_number
, speed
);
1706 /* Report additional information about SPI connections */
1707 if (cts
.ccb_h
.status
== CAM_REQ_CMP
&& cts
.transport
== XPORT_SPI
) {
1708 struct ccb_trans_settings_spi
*spi
;
1710 spi
= &cts
.xport_specific
.spi
;
1712 kprintf(" (%d.%03dMHz%s, offset %d", freq
/ 1000,
1714 (spi
->ppr_options
& MSG_EXT_PPR_DT_REQ
) != 0
1718 if ((spi
->valid
& CTS_SPI_VALID_BUS_WIDTH
) != 0
1719 && spi
->bus_width
> 0) {
1725 kprintf("%dbit)", 8 * (0x01 << spi
->bus_width
));
1726 } else if (freq
!= 0) {
1730 if (cts
.ccb_h
.status
== CAM_REQ_CMP
&& cts
.transport
== XPORT_FC
) {
1731 struct ccb_trans_settings_fc
*fc
;
1733 fc
= &cts
.xport_specific
.fc
;
1734 if (fc
->valid
& CTS_FC_VALID_WWNN
)
1735 kprintf(" WWNN 0x%llx", (long long) fc
->wwnn
);
1736 if (fc
->valid
& CTS_FC_VALID_WWPN
)
1737 kprintf(" WWPN 0x%llx", (long long) fc
->wwpn
);
1738 if (fc
->valid
& CTS_FC_VALID_PORT
)
1739 kprintf(" PortID 0x%x", fc
->port
);
1742 if (path
->device
->inq_flags
& SID_CmdQue
1743 || path
->device
->flags
& CAM_DEV_TAG_AFTER_COUNT
) {
1744 kprintf("\n%s%d: Command Queueing Enabled",
1745 periph
->periph_name
, periph
->unit_number
);
1750 * We only want to print the caller's announce string if they've
1753 if (announce_string
!= NULL
)
1754 kprintf("%s%d: %s\n", periph
->periph_name
,
1755 periph
->unit_number
, announce_string
);
1758 static dev_match_ret
1759 xptbusmatch(struct dev_match_pattern
*patterns
, u_int num_patterns
,
1762 dev_match_ret retval
;
1765 retval
= DM_RET_NONE
;
1768 * If we aren't given something to match against, that's an error.
1771 return(DM_RET_ERROR
);
1774 * If there are no match entries, then this bus matches no
1777 if ((patterns
== NULL
) || (num_patterns
== 0))
1778 return(DM_RET_DESCEND
| DM_RET_COPY
);
1780 for (i
= 0; i
< num_patterns
; i
++) {
1781 struct bus_match_pattern
*cur_pattern
;
1784 * If the pattern in question isn't for a bus node, we
1785 * aren't interested. However, we do indicate to the
1786 * calling routine that we should continue descending the
1787 * tree, since the user wants to match against lower-level
1790 if (patterns
[i
].type
!= DEV_MATCH_BUS
) {
1791 if ((retval
& DM_RET_ACTION_MASK
) == DM_RET_NONE
)
1792 retval
|= DM_RET_DESCEND
;
1796 cur_pattern
= &patterns
[i
].pattern
.bus_pattern
;
1799 * If they want to match any bus node, we give them any
1802 if (cur_pattern
->flags
== BUS_MATCH_ANY
) {
1803 /* set the copy flag */
1804 retval
|= DM_RET_COPY
;
1807 * If we've already decided on an action, go ahead
1810 if ((retval
& DM_RET_ACTION_MASK
) != DM_RET_NONE
)
1815 * Not sure why someone would do this...
1817 if (cur_pattern
->flags
== BUS_MATCH_NONE
)
1820 if (((cur_pattern
->flags
& BUS_MATCH_PATH
) != 0)
1821 && (cur_pattern
->path_id
!= bus
->path_id
))
1824 if (((cur_pattern
->flags
& BUS_MATCH_BUS_ID
) != 0)
1825 && (cur_pattern
->bus_id
!= bus
->sim
->bus_id
))
1828 if (((cur_pattern
->flags
& BUS_MATCH_UNIT
) != 0)
1829 && (cur_pattern
->unit_number
!= bus
->sim
->unit_number
))
1832 if (((cur_pattern
->flags
& BUS_MATCH_NAME
) != 0)
1833 && (strncmp(cur_pattern
->dev_name
, bus
->sim
->sim_name
,
1838 * If we get to this point, the user definitely wants
1839 * information on this bus. So tell the caller to copy the
1842 retval
|= DM_RET_COPY
;
1845 * If the return action has been set to descend, then we
1846 * know that we've already seen a non-bus matching
1847 * expression, therefore we need to further descend the tree.
1848 * This won't change by continuing around the loop, so we
1849 * go ahead and return. If we haven't seen a non-bus
1850 * matching expression, we keep going around the loop until
1851 * we exhaust the matching expressions. We'll set the stop
1852 * flag once we fall out of the loop.
1854 if ((retval
& DM_RET_ACTION_MASK
) == DM_RET_DESCEND
)
1859 * If the return action hasn't been set to descend yet, that means
1860 * we haven't seen anything other than bus matching patterns. So
1861 * tell the caller to stop descending the tree -- the user doesn't
1862 * want to match against lower level tree elements.
1864 if ((retval
& DM_RET_ACTION_MASK
) == DM_RET_NONE
)
1865 retval
|= DM_RET_STOP
;
1870 static dev_match_ret
1871 xptdevicematch(struct dev_match_pattern
*patterns
, u_int num_patterns
,
1872 struct cam_ed
*device
)
1874 dev_match_ret retval
;
1877 retval
= DM_RET_NONE
;
1880 * If we aren't given something to match against, that's an error.
1883 return(DM_RET_ERROR
);
1886 * If there are no match entries, then this device matches no
1889 if ((patterns
== NULL
) || (num_patterns
== 0))
1890 return(DM_RET_DESCEND
| DM_RET_COPY
);
1892 for (i
= 0; i
< num_patterns
; i
++) {
1893 struct device_match_pattern
*cur_pattern
;
1896 * If the pattern in question isn't for a device node, we
1897 * aren't interested.
1899 if (patterns
[i
].type
!= DEV_MATCH_DEVICE
) {
1900 if ((patterns
[i
].type
== DEV_MATCH_PERIPH
)
1901 && ((retval
& DM_RET_ACTION_MASK
) == DM_RET_NONE
))
1902 retval
|= DM_RET_DESCEND
;
1906 cur_pattern
= &patterns
[i
].pattern
.device_pattern
;
1909 * If they want to match any device node, we give them any
1912 if (cur_pattern
->flags
== DEV_MATCH_ANY
) {
1913 /* set the copy flag */
1914 retval
|= DM_RET_COPY
;
1918 * If we've already decided on an action, go ahead
1921 if ((retval
& DM_RET_ACTION_MASK
) != DM_RET_NONE
)
1926 * Not sure why someone would do this...
1928 if (cur_pattern
->flags
== DEV_MATCH_NONE
)
1931 if (((cur_pattern
->flags
& DEV_MATCH_PATH
) != 0)
1932 && (cur_pattern
->path_id
!= device
->target
->bus
->path_id
))
1935 if (((cur_pattern
->flags
& DEV_MATCH_TARGET
) != 0)
1936 && (cur_pattern
->target_id
!= device
->target
->target_id
))
1939 if (((cur_pattern
->flags
& DEV_MATCH_LUN
) != 0)
1940 && (cur_pattern
->target_lun
!= device
->lun_id
))
1943 if (((cur_pattern
->flags
& DEV_MATCH_INQUIRY
) != 0)
1944 && (cam_quirkmatch((caddr_t
)&device
->inq_data
,
1945 (caddr_t
)&cur_pattern
->inq_pat
,
1946 1, sizeof(cur_pattern
->inq_pat
),
1947 scsi_static_inquiry_match
) == NULL
))
1951 * If we get to this point, the user definitely wants
1952 * information on this device. So tell the caller to copy
1955 retval
|= DM_RET_COPY
;
1958 * If the return action has been set to descend, then we
1959 * know that we've already seen a peripheral matching
1960 * expression, therefore we need to further descend the tree.
1961 * This won't change by continuing around the loop, so we
1962 * go ahead and return. If we haven't seen a peripheral
1963 * matching expression, we keep going around the loop until
1964 * we exhaust the matching expressions. We'll set the stop
1965 * flag once we fall out of the loop.
1967 if ((retval
& DM_RET_ACTION_MASK
) == DM_RET_DESCEND
)
1972 * If the return action hasn't been set to descend yet, that means
1973 * we haven't seen any peripheral matching patterns. So tell the
1974 * caller to stop descending the tree -- the user doesn't want to
1975 * match against lower level tree elements.
1977 if ((retval
& DM_RET_ACTION_MASK
) == DM_RET_NONE
)
1978 retval
|= DM_RET_STOP
;
1984 * Match a single peripheral against any number of match patterns.
1986 static dev_match_ret
1987 xptperiphmatch(struct dev_match_pattern
*patterns
, u_int num_patterns
,
1988 struct cam_periph
*periph
)
1990 dev_match_ret retval
;
1994 * If we aren't given something to match against, that's an error.
1997 return(DM_RET_ERROR
);
2000 * If there are no match entries, then this peripheral matches no
2003 if ((patterns
== NULL
) || (num_patterns
== 0))
2004 return(DM_RET_STOP
| DM_RET_COPY
);
2007 * There aren't any nodes below a peripheral node, so there's no
2008 * reason to descend the tree any further.
2010 retval
= DM_RET_STOP
;
2012 for (i
= 0; i
< num_patterns
; i
++) {
2013 struct periph_match_pattern
*cur_pattern
;
2016 * If the pattern in question isn't for a peripheral, we
2017 * aren't interested.
2019 if (patterns
[i
].type
!= DEV_MATCH_PERIPH
)
2022 cur_pattern
= &patterns
[i
].pattern
.periph_pattern
;
2025 * If they want to match on anything, then we will do so.
2027 if (cur_pattern
->flags
== PERIPH_MATCH_ANY
) {
2028 /* set the copy flag */
2029 retval
|= DM_RET_COPY
;
2032 * We've already set the return action to stop,
2033 * since there are no nodes below peripherals in
2040 * Not sure why someone would do this...
2042 if (cur_pattern
->flags
== PERIPH_MATCH_NONE
)
2045 if (((cur_pattern
->flags
& PERIPH_MATCH_PATH
) != 0)
2046 && (cur_pattern
->path_id
!= periph
->path
->bus
->path_id
))
2050 * For the target and lun id's, we have to make sure the
2051 * target and lun pointers aren't NULL. The xpt peripheral
2052 * has a wildcard target and device.
2054 if (((cur_pattern
->flags
& PERIPH_MATCH_TARGET
) != 0)
2055 && ((periph
->path
->target
== NULL
)
2056 ||(cur_pattern
->target_id
!= periph
->path
->target
->target_id
)))
2059 if (((cur_pattern
->flags
& PERIPH_MATCH_LUN
) != 0)
2060 && ((periph
->path
->device
== NULL
)
2061 || (cur_pattern
->target_lun
!= periph
->path
->device
->lun_id
)))
2064 if (((cur_pattern
->flags
& PERIPH_MATCH_UNIT
) != 0)
2065 && (cur_pattern
->unit_number
!= periph
->unit_number
))
2068 if (((cur_pattern
->flags
& PERIPH_MATCH_NAME
) != 0)
2069 && (strncmp(cur_pattern
->periph_name
, periph
->periph_name
,
2074 * If we get to this point, the user definitely wants
2075 * information on this peripheral. So tell the caller to
2076 * copy the data out.
2078 retval
|= DM_RET_COPY
;
2081 * The return action has already been set to stop, since
2082 * peripherals don't have any nodes below them in the EDT.
2088 * If we get to this point, the peripheral that was passed in
2089 * doesn't match any of the patterns.
2095 xptedtbusfunc(struct cam_eb
*bus
, void *arg
)
2097 struct ccb_dev_match
*cdm
;
2098 dev_match_ret retval
;
2100 cdm
= (struct ccb_dev_match
*)arg
;
2103 * If our position is for something deeper in the tree, that means
2104 * that we've already seen this node. So, we keep going down.
2106 if ((cdm
->pos
.position_type
& CAM_DEV_POS_BUS
)
2107 && (cdm
->pos
.cookie
.bus
== bus
)
2108 && (cdm
->pos
.position_type
& CAM_DEV_POS_TARGET
)
2109 && (cdm
->pos
.cookie
.target
!= NULL
))
2110 retval
= DM_RET_DESCEND
;
2112 retval
= xptbusmatch(cdm
->patterns
, cdm
->num_patterns
, bus
);
2115 * If we got an error, bail out of the search.
2117 if ((retval
& DM_RET_ACTION_MASK
) == DM_RET_ERROR
) {
2118 cdm
->status
= CAM_DEV_MATCH_ERROR
;
2123 * If the copy flag is set, copy this bus out.
2125 if (retval
& DM_RET_COPY
) {
2128 spaceleft
= cdm
->match_buf_len
- (cdm
->num_matches
*
2129 sizeof(struct dev_match_result
));
2132 * If we don't have enough space to put in another
2133 * match result, save our position and tell the
2134 * user there are more devices to check.
2136 if (spaceleft
< sizeof(struct dev_match_result
)) {
2137 bzero(&cdm
->pos
, sizeof(cdm
->pos
));
2138 cdm
->pos
.position_type
=
2139 CAM_DEV_POS_EDT
| CAM_DEV_POS_BUS
;
2141 cdm
->pos
.cookie
.bus
= bus
;
2142 cdm
->pos
.generations
[CAM_BUS_GENERATION
]=
2143 xsoftc
.bus_generation
;
2144 cdm
->status
= CAM_DEV_MATCH_MORE
;
2147 j
= cdm
->num_matches
;
2149 cdm
->matches
[j
].type
= DEV_MATCH_BUS
;
2150 cdm
->matches
[j
].result
.bus_result
.path_id
= bus
->path_id
;
2151 cdm
->matches
[j
].result
.bus_result
.bus_id
= bus
->sim
->bus_id
;
2152 cdm
->matches
[j
].result
.bus_result
.unit_number
=
2153 bus
->sim
->unit_number
;
2154 strncpy(cdm
->matches
[j
].result
.bus_result
.dev_name
,
2155 bus
->sim
->sim_name
, DEV_IDLEN
);
2159 * If the user is only interested in busses, there's no
2160 * reason to descend to the next level in the tree.
2162 if ((retval
& DM_RET_ACTION_MASK
) == DM_RET_STOP
)
2166 * If there is a target generation recorded, check it to
2167 * make sure the target list hasn't changed.
2169 if ((cdm
->pos
.position_type
& CAM_DEV_POS_BUS
)
2170 && (bus
== cdm
->pos
.cookie
.bus
)
2171 && (cdm
->pos
.position_type
& CAM_DEV_POS_TARGET
)
2172 && (cdm
->pos
.generations
[CAM_TARGET_GENERATION
] != 0)
2173 && (cdm
->pos
.generations
[CAM_TARGET_GENERATION
] !=
2175 cdm
->status
= CAM_DEV_MATCH_LIST_CHANGED
;
2179 if ((cdm
->pos
.position_type
& CAM_DEV_POS_BUS
)
2180 && (cdm
->pos
.cookie
.bus
== bus
)
2181 && (cdm
->pos
.position_type
& CAM_DEV_POS_TARGET
)
2182 && (cdm
->pos
.cookie
.target
!= NULL
))
2183 return(xpttargettraverse(bus
,
2184 (struct cam_et
*)cdm
->pos
.cookie
.target
,
2185 xptedttargetfunc
, arg
));
2187 return(xpttargettraverse(bus
, NULL
, xptedttargetfunc
, arg
));
2191 xptedttargetfunc(struct cam_et
*target
, void *arg
)
2193 struct ccb_dev_match
*cdm
;
2195 cdm
= (struct ccb_dev_match
*)arg
;
2198 * If there is a device list generation recorded, check it to
2199 * make sure the device list hasn't changed.
2201 if ((cdm
->pos
.position_type
& CAM_DEV_POS_BUS
)
2202 && (cdm
->pos
.cookie
.bus
== target
->bus
)
2203 && (cdm
->pos
.position_type
& CAM_DEV_POS_TARGET
)
2204 && (cdm
->pos
.cookie
.target
== target
)
2205 && (cdm
->pos
.position_type
& CAM_DEV_POS_DEVICE
)
2206 && (cdm
->pos
.generations
[CAM_DEV_GENERATION
] != 0)
2207 && (cdm
->pos
.generations
[CAM_DEV_GENERATION
] !=
2208 target
->generation
)) {
2209 cdm
->status
= CAM_DEV_MATCH_LIST_CHANGED
;
2213 if ((cdm
->pos
.position_type
& CAM_DEV_POS_BUS
)
2214 && (cdm
->pos
.cookie
.bus
== target
->bus
)
2215 && (cdm
->pos
.position_type
& CAM_DEV_POS_TARGET
)
2216 && (cdm
->pos
.cookie
.target
== target
)
2217 && (cdm
->pos
.position_type
& CAM_DEV_POS_DEVICE
)
2218 && (cdm
->pos
.cookie
.device
!= NULL
))
2219 return(xptdevicetraverse(target
,
2220 (struct cam_ed
*)cdm
->pos
.cookie
.device
,
2221 xptedtdevicefunc
, arg
));
2223 return(xptdevicetraverse(target
, NULL
, xptedtdevicefunc
, arg
));
2227 xptedtdevicefunc(struct cam_ed
*device
, void *arg
)
2230 struct ccb_dev_match
*cdm
;
2231 dev_match_ret retval
;
2233 cdm
= (struct ccb_dev_match
*)arg
;
2236 * If our position is for something deeper in the tree, that means
2237 * that we've already seen this node. So, we keep going down.
2239 if ((cdm
->pos
.position_type
& CAM_DEV_POS_DEVICE
)
2240 && (cdm
->pos
.cookie
.device
== device
)
2241 && (cdm
->pos
.position_type
& CAM_DEV_POS_PERIPH
)
2242 && (cdm
->pos
.cookie
.periph
!= NULL
))
2243 retval
= DM_RET_DESCEND
;
2245 retval
= xptdevicematch(cdm
->patterns
, cdm
->num_patterns
,
2248 if ((retval
& DM_RET_ACTION_MASK
) == DM_RET_ERROR
) {
2249 cdm
->status
= CAM_DEV_MATCH_ERROR
;
2254 * If the copy flag is set, copy this device out.
2256 if (retval
& DM_RET_COPY
) {
2259 spaceleft
= cdm
->match_buf_len
- (cdm
->num_matches
*
2260 sizeof(struct dev_match_result
));
2263 * If we don't have enough space to put in another
2264 * match result, save our position and tell the
2265 * user there are more devices to check.
2267 if (spaceleft
< sizeof(struct dev_match_result
)) {
2268 bzero(&cdm
->pos
, sizeof(cdm
->pos
));
2269 cdm
->pos
.position_type
=
2270 CAM_DEV_POS_EDT
| CAM_DEV_POS_BUS
|
2271 CAM_DEV_POS_TARGET
| CAM_DEV_POS_DEVICE
;
2273 cdm
->pos
.cookie
.bus
= device
->target
->bus
;
2274 cdm
->pos
.generations
[CAM_BUS_GENERATION
]=
2275 xsoftc
.bus_generation
;
2276 cdm
->pos
.cookie
.target
= device
->target
;
2277 cdm
->pos
.generations
[CAM_TARGET_GENERATION
] =
2278 device
->target
->bus
->generation
;
2279 cdm
->pos
.cookie
.device
= device
;
2280 cdm
->pos
.generations
[CAM_DEV_GENERATION
] =
2281 device
->target
->generation
;
2282 cdm
->status
= CAM_DEV_MATCH_MORE
;
2285 j
= cdm
->num_matches
;
2287 cdm
->matches
[j
].type
= DEV_MATCH_DEVICE
;
2288 cdm
->matches
[j
].result
.device_result
.path_id
=
2289 device
->target
->bus
->path_id
;
2290 cdm
->matches
[j
].result
.device_result
.target_id
=
2291 device
->target
->target_id
;
2292 cdm
->matches
[j
].result
.device_result
.target_lun
=
2294 bcopy(&device
->inq_data
,
2295 &cdm
->matches
[j
].result
.device_result
.inq_data
,
2296 sizeof(struct scsi_inquiry_data
));
2298 /* Let the user know whether this device is unconfigured */
2299 if (device
->flags
& CAM_DEV_UNCONFIGURED
)
2300 cdm
->matches
[j
].result
.device_result
.flags
=
2301 DEV_RESULT_UNCONFIGURED
;
2303 cdm
->matches
[j
].result
.device_result
.flags
=
2308 * If the user isn't interested in peripherals, don't descend
2309 * the tree any further.
2311 if ((retval
& DM_RET_ACTION_MASK
) == DM_RET_STOP
)
2315 * If there is a peripheral list generation recorded, make sure
2316 * it hasn't changed.
2318 if ((cdm
->pos
.position_type
& CAM_DEV_POS_BUS
)
2319 && (device
->target
->bus
== cdm
->pos
.cookie
.bus
)
2320 && (cdm
->pos
.position_type
& CAM_DEV_POS_TARGET
)
2321 && (device
->target
== cdm
->pos
.cookie
.target
)
2322 && (cdm
->pos
.position_type
& CAM_DEV_POS_DEVICE
)
2323 && (device
== cdm
->pos
.cookie
.device
)
2324 && (cdm
->pos
.position_type
& CAM_DEV_POS_PERIPH
)
2325 && (cdm
->pos
.generations
[CAM_PERIPH_GENERATION
] != 0)
2326 && (cdm
->pos
.generations
[CAM_PERIPH_GENERATION
] !=
2327 device
->generation
)){
2328 cdm
->status
= CAM_DEV_MATCH_LIST_CHANGED
;
2332 if ((cdm
->pos
.position_type
& CAM_DEV_POS_BUS
)
2333 && (cdm
->pos
.cookie
.bus
== device
->target
->bus
)
2334 && (cdm
->pos
.position_type
& CAM_DEV_POS_TARGET
)
2335 && (cdm
->pos
.cookie
.target
== device
->target
)
2336 && (cdm
->pos
.position_type
& CAM_DEV_POS_DEVICE
)
2337 && (cdm
->pos
.cookie
.device
== device
)
2338 && (cdm
->pos
.position_type
& CAM_DEV_POS_PERIPH
)
2339 && (cdm
->pos
.cookie
.periph
!= NULL
))
2340 return(xptperiphtraverse(device
,
2341 (struct cam_periph
*)cdm
->pos
.cookie
.periph
,
2342 xptedtperiphfunc
, arg
));
2344 return(xptperiphtraverse(device
, NULL
, xptedtperiphfunc
, arg
));
2348 xptedtperiphfunc(struct cam_periph
*periph
, void *arg
)
2350 struct ccb_dev_match
*cdm
;
2351 dev_match_ret retval
;
2353 cdm
= (struct ccb_dev_match
*)arg
;
2355 retval
= xptperiphmatch(cdm
->patterns
, cdm
->num_patterns
, periph
);
2357 if ((retval
& DM_RET_ACTION_MASK
) == DM_RET_ERROR
) {
2358 cdm
->status
= CAM_DEV_MATCH_ERROR
;
2363 * If the copy flag is set, copy this peripheral out.
2365 if (retval
& DM_RET_COPY
) {
2368 spaceleft
= cdm
->match_buf_len
- (cdm
->num_matches
*
2369 sizeof(struct dev_match_result
));
2372 * If we don't have enough space to put in another
2373 * match result, save our position and tell the
2374 * user there are more devices to check.
2376 if (spaceleft
< sizeof(struct dev_match_result
)) {
2377 bzero(&cdm
->pos
, sizeof(cdm
->pos
));
2378 cdm
->pos
.position_type
=
2379 CAM_DEV_POS_EDT
| CAM_DEV_POS_BUS
|
2380 CAM_DEV_POS_TARGET
| CAM_DEV_POS_DEVICE
|
2383 cdm
->pos
.cookie
.bus
= periph
->path
->bus
;
2384 cdm
->pos
.generations
[CAM_BUS_GENERATION
]=
2385 xsoftc
.bus_generation
;
2386 cdm
->pos
.cookie
.target
= periph
->path
->target
;
2387 cdm
->pos
.generations
[CAM_TARGET_GENERATION
] =
2388 periph
->path
->bus
->generation
;
2389 cdm
->pos
.cookie
.device
= periph
->path
->device
;
2390 cdm
->pos
.generations
[CAM_DEV_GENERATION
] =
2391 periph
->path
->target
->generation
;
2392 cdm
->pos
.cookie
.periph
= periph
;
2393 cdm
->pos
.generations
[CAM_PERIPH_GENERATION
] =
2394 periph
->path
->device
->generation
;
2395 cdm
->status
= CAM_DEV_MATCH_MORE
;
2399 j
= cdm
->num_matches
;
2401 cdm
->matches
[j
].type
= DEV_MATCH_PERIPH
;
2402 cdm
->matches
[j
].result
.periph_result
.path_id
=
2403 periph
->path
->bus
->path_id
;
2404 cdm
->matches
[j
].result
.periph_result
.target_id
=
2405 periph
->path
->target
->target_id
;
2406 cdm
->matches
[j
].result
.periph_result
.target_lun
=
2407 periph
->path
->device
->lun_id
;
2408 cdm
->matches
[j
].result
.periph_result
.unit_number
=
2409 periph
->unit_number
;
2410 strncpy(cdm
->matches
[j
].result
.periph_result
.periph_name
,
2411 periph
->periph_name
, DEV_IDLEN
);
2418 xptedtmatch(struct ccb_dev_match
*cdm
)
2422 cdm
->num_matches
= 0;
2425 * Check the bus list generation. If it has changed, the user
2426 * needs to reset everything and start over.
2428 if ((cdm
->pos
.position_type
& CAM_DEV_POS_BUS
)
2429 && (cdm
->pos
.generations
[CAM_BUS_GENERATION
] != 0)
2430 && (cdm
->pos
.generations
[CAM_BUS_GENERATION
] != xsoftc
.bus_generation
)) {
2431 cdm
->status
= CAM_DEV_MATCH_LIST_CHANGED
;
2435 if ((cdm
->pos
.position_type
& CAM_DEV_POS_BUS
)
2436 && (cdm
->pos
.cookie
.bus
!= NULL
))
2437 ret
= xptbustraverse((struct cam_eb
*)cdm
->pos
.cookie
.bus
,
2438 xptedtbusfunc
, cdm
);
2440 ret
= xptbustraverse(NULL
, xptedtbusfunc
, cdm
);
2443 * If we get back 0, that means that we had to stop before fully
2444 * traversing the EDT. It also means that one of the subroutines
2445 * has set the status field to the proper value. If we get back 1,
2446 * we've fully traversed the EDT and copied out any matching entries.
2449 cdm
->status
= CAM_DEV_MATCH_LAST
;
2455 xptplistpdrvfunc(struct periph_driver
**pdrv
, void *arg
)
2457 struct ccb_dev_match
*cdm
;
2459 cdm
= (struct ccb_dev_match
*)arg
;
2461 if ((cdm
->pos
.position_type
& CAM_DEV_POS_PDPTR
)
2462 && (cdm
->pos
.cookie
.pdrv
== pdrv
)
2463 && (cdm
->pos
.position_type
& CAM_DEV_POS_PERIPH
)
2464 && (cdm
->pos
.generations
[CAM_PERIPH_GENERATION
] != 0)
2465 && (cdm
->pos
.generations
[CAM_PERIPH_GENERATION
] !=
2466 (*pdrv
)->generation
)) {
2467 cdm
->status
= CAM_DEV_MATCH_LIST_CHANGED
;
2471 if ((cdm
->pos
.position_type
& CAM_DEV_POS_PDPTR
)
2472 && (cdm
->pos
.cookie
.pdrv
== pdrv
)
2473 && (cdm
->pos
.position_type
& CAM_DEV_POS_PERIPH
)
2474 && (cdm
->pos
.cookie
.periph
!= NULL
))
2475 return(xptpdperiphtraverse(pdrv
,
2476 (struct cam_periph
*)cdm
->pos
.cookie
.periph
,
2477 xptplistperiphfunc
, arg
));
2479 return(xptpdperiphtraverse(pdrv
, NULL
,xptplistperiphfunc
, arg
));
2483 xptplistperiphfunc(struct cam_periph
*periph
, void *arg
)
2485 struct ccb_dev_match
*cdm
;
2486 dev_match_ret retval
;
2488 cdm
= (struct ccb_dev_match
*)arg
;
2490 retval
= xptperiphmatch(cdm
->patterns
, cdm
->num_patterns
, periph
);
2492 if ((retval
& DM_RET_ACTION_MASK
) == DM_RET_ERROR
) {
2493 cdm
->status
= CAM_DEV_MATCH_ERROR
;
2498 * If the copy flag is set, copy this peripheral out.
2500 if (retval
& DM_RET_COPY
) {
2503 spaceleft
= cdm
->match_buf_len
- (cdm
->num_matches
*
2504 sizeof(struct dev_match_result
));
2507 * If we don't have enough space to put in another
2508 * match result, save our position and tell the
2509 * user there are more devices to check.
2511 if (spaceleft
< sizeof(struct dev_match_result
)) {
2512 struct periph_driver
**pdrv
;
2515 bzero(&cdm
->pos
, sizeof(cdm
->pos
));
2516 cdm
->pos
.position_type
=
2517 CAM_DEV_POS_PDRV
| CAM_DEV_POS_PDPTR
|
2521 * This may look a bit non-sensical, but it is
2522 * actually quite logical. There are very few
2523 * peripheral drivers, and bloating every peripheral
2524 * structure with a pointer back to its parent
2525 * peripheral driver linker set entry would cost
2526 * more in the long run than doing this quick lookup.
2528 for (pdrv
= periph_drivers
; *pdrv
!= NULL
; pdrv
++) {
2529 if (strcmp((*pdrv
)->driver_name
,
2530 periph
->periph_name
) == 0)
2534 if (*pdrv
== NULL
) {
2535 cdm
->status
= CAM_DEV_MATCH_ERROR
;
2539 cdm
->pos
.cookie
.pdrv
= pdrv
;
2541 * The periph generation slot does double duty, as
2542 * does the periph pointer slot. They are used for
2543 * both edt and pdrv lookups and positioning.
2545 cdm
->pos
.cookie
.periph
= periph
;
2546 cdm
->pos
.generations
[CAM_PERIPH_GENERATION
] =
2547 (*pdrv
)->generation
;
2548 cdm
->status
= CAM_DEV_MATCH_MORE
;
2552 j
= cdm
->num_matches
;
2554 cdm
->matches
[j
].type
= DEV_MATCH_PERIPH
;
2555 cdm
->matches
[j
].result
.periph_result
.path_id
=
2556 periph
->path
->bus
->path_id
;
2559 * The transport layer peripheral doesn't have a target or
2562 if (periph
->path
->target
)
2563 cdm
->matches
[j
].result
.periph_result
.target_id
=
2564 periph
->path
->target
->target_id
;
2566 cdm
->matches
[j
].result
.periph_result
.target_id
= -1;
2568 if (periph
->path
->device
)
2569 cdm
->matches
[j
].result
.periph_result
.target_lun
=
2570 periph
->path
->device
->lun_id
;
2572 cdm
->matches
[j
].result
.periph_result
.target_lun
= -1;
2574 cdm
->matches
[j
].result
.periph_result
.unit_number
=
2575 periph
->unit_number
;
2576 strncpy(cdm
->matches
[j
].result
.periph_result
.periph_name
,
2577 periph
->periph_name
, DEV_IDLEN
);
2584 xptperiphlistmatch(struct ccb_dev_match
*cdm
)
2588 cdm
->num_matches
= 0;
2591 * At this point in the edt traversal function, we check the bus
2592 * list generation to make sure that no busses have been added or
2593 * removed since the user last sent a XPT_DEV_MATCH ccb through.
2594 * For the peripheral driver list traversal function, however, we
2595 * don't have to worry about new peripheral driver types coming or
2596 * going; they're in a linker set, and therefore can't change
2597 * without a recompile.
2600 if ((cdm
->pos
.position_type
& CAM_DEV_POS_PDPTR
)
2601 && (cdm
->pos
.cookie
.pdrv
!= NULL
))
2602 ret
= xptpdrvtraverse(
2603 (struct periph_driver
**)cdm
->pos
.cookie
.pdrv
,
2604 xptplistpdrvfunc
, cdm
);
2606 ret
= xptpdrvtraverse(NULL
, xptplistpdrvfunc
, cdm
);
2609 * If we get back 0, that means that we had to stop before fully
2610 * traversing the peripheral driver tree. It also means that one of
2611 * the subroutines has set the status field to the proper value. If
2612 * we get back 1, we've fully traversed the EDT and copied out any
2616 cdm
->status
= CAM_DEV_MATCH_LAST
;
2622 xptbustraverse(struct cam_eb
*start_bus
, xpt_busfunc_t
*tr_func
, void *arg
)
2624 struct cam_eb
*bus
, *next_bus
;
2629 lockmgr(&xsoftc
.xpt_topo_lock
, LK_EXCLUSIVE
);
2630 for (bus
= (start_bus
? start_bus
: TAILQ_FIRST(&xsoftc
.xpt_busses
));
2633 next_bus
= TAILQ_NEXT(bus
, links
);
2635 lockmgr(&xsoftc
.xpt_topo_lock
, LK_RELEASE
);
2636 CAM_SIM_LOCK(bus
->sim
);
2637 retval
= tr_func(bus
, arg
);
2638 CAM_SIM_UNLOCK(bus
->sim
);
2641 lockmgr(&xsoftc
.xpt_topo_lock
, LK_EXCLUSIVE
);
2643 lockmgr(&xsoftc
.xpt_topo_lock
, LK_RELEASE
);
2649 xpttargettraverse(struct cam_eb
*bus
, struct cam_et
*start_target
,
2650 xpt_targetfunc_t
*tr_func
, void *arg
)
2652 struct cam_et
*target
, *next_target
;
2656 for (target
= (start_target
? start_target
:
2657 TAILQ_FIRST(&bus
->et_entries
));
2658 target
!= NULL
; target
= next_target
) {
2660 next_target
= TAILQ_NEXT(target
, links
);
2662 retval
= tr_func(target
, arg
);
2672 xptdevicetraverse(struct cam_et
*target
, struct cam_ed
*start_device
,
2673 xpt_devicefunc_t
*tr_func
, void *arg
)
2675 struct cam_ed
*device
, *next_device
;
2679 for (device
= (start_device
? start_device
:
2680 TAILQ_FIRST(&target
->ed_entries
));
2682 device
= next_device
) {
2684 next_device
= TAILQ_NEXT(device
, links
);
2686 retval
= tr_func(device
, arg
);
2696 xptperiphtraverse(struct cam_ed
*device
, struct cam_periph
*start_periph
,
2697 xpt_periphfunc_t
*tr_func
, void *arg
)
2699 struct cam_periph
*periph
, *next_periph
;
2704 for (periph
= (start_periph
? start_periph
:
2705 SLIST_FIRST(&device
->periphs
));
2707 periph
= next_periph
) {
2709 next_periph
= SLIST_NEXT(periph
, periph_links
);
2711 retval
= tr_func(periph
, arg
);
2720 xptpdrvtraverse(struct periph_driver
**start_pdrv
,
2721 xpt_pdrvfunc_t
*tr_func
, void *arg
)
2723 struct periph_driver
**pdrv
;
2729 * We don't traverse the peripheral driver list like we do the
2730 * other lists, because it is a linker set, and therefore cannot be
2731 * changed during runtime. If the peripheral driver list is ever
2732 * re-done to be something other than a linker set (i.e. it can
2733 * change while the system is running), the list traversal should
2734 * be modified to work like the other traversal functions.
2736 for (pdrv
= (start_pdrv
? start_pdrv
: periph_drivers
);
2737 *pdrv
!= NULL
; pdrv
++) {
2738 retval
= tr_func(pdrv
, arg
);
2748 xptpdperiphtraverse(struct periph_driver
**pdrv
,
2749 struct cam_periph
*start_periph
,
2750 xpt_periphfunc_t
*tr_func
, void *arg
)
2752 struct cam_periph
*periph
, *next_periph
;
2757 for (periph
= (start_periph
? start_periph
:
2758 TAILQ_FIRST(&(*pdrv
)->units
)); periph
!= NULL
;
2759 periph
= next_periph
) {
2761 next_periph
= TAILQ_NEXT(periph
, unit_links
);
2763 retval
= tr_func(periph
, arg
);
2771 xptdefbusfunc(struct cam_eb
*bus
, void *arg
)
2773 struct xpt_traverse_config
*tr_config
;
2775 tr_config
= (struct xpt_traverse_config
*)arg
;
2777 if (tr_config
->depth
== XPT_DEPTH_BUS
) {
2778 xpt_busfunc_t
*tr_func
;
2780 tr_func
= (xpt_busfunc_t
*)tr_config
->tr_func
;
2782 return(tr_func(bus
, tr_config
->tr_arg
));
2784 return(xpttargettraverse(bus
, NULL
, xptdeftargetfunc
, arg
));
2788 xptdeftargetfunc(struct cam_et
*target
, void *arg
)
2790 struct xpt_traverse_config
*tr_config
;
2792 tr_config
= (struct xpt_traverse_config
*)arg
;
2794 if (tr_config
->depth
== XPT_DEPTH_TARGET
) {
2795 xpt_targetfunc_t
*tr_func
;
2797 tr_func
= (xpt_targetfunc_t
*)tr_config
->tr_func
;
2799 return(tr_func(target
, tr_config
->tr_arg
));
2801 return(xptdevicetraverse(target
, NULL
, xptdefdevicefunc
, arg
));
2805 xptdefdevicefunc(struct cam_ed
*device
, void *arg
)
2807 struct xpt_traverse_config
*tr_config
;
2809 tr_config
= (struct xpt_traverse_config
*)arg
;
2811 if (tr_config
->depth
== XPT_DEPTH_DEVICE
) {
2812 xpt_devicefunc_t
*tr_func
;
2814 tr_func
= (xpt_devicefunc_t
*)tr_config
->tr_func
;
2816 return(tr_func(device
, tr_config
->tr_arg
));
2818 return(xptperiphtraverse(device
, NULL
, xptdefperiphfunc
, arg
));
2822 xptdefperiphfunc(struct cam_periph
*periph
, void *arg
)
2824 struct xpt_traverse_config
*tr_config
;
2825 xpt_periphfunc_t
*tr_func
;
2827 tr_config
= (struct xpt_traverse_config
*)arg
;
2829 tr_func
= (xpt_periphfunc_t
*)tr_config
->tr_func
;
2832 * Unlike the other default functions, we don't check for depth
2833 * here. The peripheral driver level is the last level in the EDT,
2834 * so if we're here, we should execute the function in question.
2836 return(tr_func(periph
, tr_config
->tr_arg
));
2840 * Execute the given function for every bus in the EDT.
2843 xpt_for_all_busses(xpt_busfunc_t
*tr_func
, void *arg
)
2845 struct xpt_traverse_config tr_config
;
2847 tr_config
.depth
= XPT_DEPTH_BUS
;
2848 tr_config
.tr_func
= tr_func
;
2849 tr_config
.tr_arg
= arg
;
2851 return(xptbustraverse(NULL
, xptdefbusfunc
, &tr_config
));
2855 * Execute the given function for every device in the EDT.
2858 xpt_for_all_devices(xpt_devicefunc_t
*tr_func
, void *arg
)
2860 struct xpt_traverse_config tr_config
;
2862 tr_config
.depth
= XPT_DEPTH_DEVICE
;
2863 tr_config
.tr_func
= tr_func
;
2864 tr_config
.tr_arg
= arg
;
2866 return(xptbustraverse(NULL
, xptdefbusfunc
, &tr_config
));
2870 xptsetasyncfunc(struct cam_ed
*device
, void *arg
)
2872 struct cam_path path
;
2873 struct ccb_getdev cgd
;
2874 struct async_node
*cur_entry
;
2876 cur_entry
= (struct async_node
*)arg
;
2879 * Don't report unconfigured devices (Wildcard devs,
2880 * devices only for target mode, device instances
2881 * that have been invalidated but are waiting for
2882 * their last reference count to be released).
2884 if ((device
->flags
& CAM_DEV_UNCONFIGURED
) != 0)
2887 xpt_compile_path(&path
,
2889 device
->target
->bus
->path_id
,
2890 device
->target
->target_id
,
2892 xpt_setup_ccb(&cgd
.ccb_h
, &path
, /*priority*/1);
2893 cgd
.ccb_h
.func_code
= XPT_GDEV_TYPE
;
2894 xpt_action((union ccb
*)&cgd
);
2895 cur_entry
->callback(cur_entry
->callback_arg
,
2898 xpt_release_path(&path
);
2904 xptsetasyncbusfunc(struct cam_eb
*bus
, void *arg
)
2906 struct cam_path path
;
2907 struct ccb_pathinq cpi
;
2908 struct async_node
*cur_entry
;
2910 cur_entry
= (struct async_node
*)arg
;
2912 xpt_compile_path(&path
, /*periph*/NULL
,
2914 CAM_TARGET_WILDCARD
,
2916 xpt_setup_ccb(&cpi
.ccb_h
, &path
, /*priority*/1);
2917 cpi
.ccb_h
.func_code
= XPT_PATH_INQ
;
2918 xpt_action((union ccb
*)&cpi
);
2919 cur_entry
->callback(cur_entry
->callback_arg
,
2922 xpt_release_path(&path
);
2928 xpt_action_sasync_cb(void *context
, int pending
)
2930 struct async_node
*cur_entry
;
2931 struct xpt_task
*task
;
2934 task
= (struct xpt_task
*)context
;
2935 cur_entry
= (struct async_node
*)task
->data1
;
2936 added
= task
->data2
;
2938 if ((added
& AC_FOUND_DEVICE
) != 0) {
2940 * Get this peripheral up to date with all
2941 * the currently existing devices.
2943 xpt_for_all_devices(xptsetasyncfunc
, cur_entry
);
2945 if ((added
& AC_PATH_REGISTERED
) != 0) {
2947 * Get this peripheral up to date with all
2948 * the currently existing busses.
2950 xpt_for_all_busses(xptsetasyncbusfunc
, cur_entry
);
2953 kfree(task
, M_CAMXPT
);
2957 xpt_action(union ccb
*start_ccb
)
2959 CAM_DEBUG(start_ccb
->ccb_h
.path
, CAM_DEBUG_TRACE
, ("xpt_action\n"));
2961 start_ccb
->ccb_h
.status
= CAM_REQ_INPROG
;
2963 switch (start_ccb
->ccb_h
.func_code
) {
2966 struct cam_ed
*device
;
2968 char cdb_str
[(SCSI_MAX_CDBLEN
* 3) + 1];
2969 struct cam_path
*path
;
2971 path
= start_ccb
->ccb_h
.path
;
2975 * For the sake of compatibility with SCSI-1
2976 * devices that may not understand the identify
2977 * message, we include lun information in the
2978 * second byte of all commands. SCSI-1 specifies
2979 * that luns are a 3 bit value and reserves only 3
2980 * bits for lun information in the CDB. Later
2981 * revisions of the SCSI spec allow for more than 8
2982 * luns, but have deprecated lun information in the
2983 * CDB. So, if the lun won't fit, we must omit.
2985 * Also be aware that during initial probing for devices,
2986 * the inquiry information is unknown but initialized to 0.
2987 * This means that this code will be exercised while probing
2988 * devices with an ANSI revision greater than 2.
2990 device
= start_ccb
->ccb_h
.path
->device
;
2991 if (device
->protocol_version
<= SCSI_REV_2
2992 && start_ccb
->ccb_h
.target_lun
< 8
2993 && (start_ccb
->ccb_h
.flags
& CAM_CDB_POINTER
) == 0) {
2995 start_ccb
->csio
.cdb_io
.cdb_bytes
[1] |=
2996 start_ccb
->ccb_h
.target_lun
<< 5;
2998 start_ccb
->csio
.scsi_status
= SCSI_STATUS_OK
;
2999 CAM_DEBUG(path
, CAM_DEBUG_CDB
,("%s. CDB: %s\n",
3000 scsi_op_desc(start_ccb
->csio
.cdb_io
.cdb_bytes
[0],
3001 &path
->device
->inq_data
),
3002 scsi_cdb_string(start_ccb
->csio
.cdb_io
.cdb_bytes
,
3003 cdb_str
, sizeof(cdb_str
))));
3007 case XPT_CONT_TARGET_IO
:
3008 start_ccb
->csio
.sense_resid
= 0;
3009 start_ccb
->csio
.resid
= 0;
3014 struct cam_path
*path
;
3015 struct cam_sim
*sim
;
3018 path
= start_ccb
->ccb_h
.path
;
3020 sim
= path
->bus
->sim
;
3021 if (sim
== &cam_dead_sim
) {
3022 /* The SIM has gone; just execute the CCB directly. */
3023 cam_ccbq_send_ccb(&path
->device
->ccbq
, start_ccb
);
3024 (*(sim
->sim_action
))(sim
, start_ccb
);
3028 cam_ccbq_insert_ccb(&path
->device
->ccbq
, start_ccb
);
3029 if (path
->device
->qfrozen_cnt
== 0)
3030 runq
= xpt_schedule_dev_sendq(path
->bus
, path
->device
);
3034 xpt_run_dev_sendq(path
->bus
);
3037 case XPT_SET_TRAN_SETTINGS
:
3039 xpt_set_transfer_settings(&start_ccb
->cts
,
3040 start_ccb
->ccb_h
.path
->device
,
3041 /*async_update*/FALSE
);
3044 case XPT_CALC_GEOMETRY
:
3046 struct cam_sim
*sim
;
3048 /* Filter out garbage */
3049 if (start_ccb
->ccg
.block_size
== 0
3050 || start_ccb
->ccg
.volume_size
== 0) {
3051 start_ccb
->ccg
.cylinders
= 0;
3052 start_ccb
->ccg
.heads
= 0;
3053 start_ccb
->ccg
.secs_per_track
= 0;
3054 start_ccb
->ccb_h
.status
= CAM_REQ_CMP
;
3057 sim
= start_ccb
->ccb_h
.path
->bus
->sim
;
3058 (*(sim
->sim_action
))(sim
, start_ccb
);
3063 union ccb
* abort_ccb
;
3065 abort_ccb
= start_ccb
->cab
.abort_ccb
;
3066 if (XPT_FC_IS_DEV_QUEUED(abort_ccb
)) {
3068 if (abort_ccb
->ccb_h
.pinfo
.index
>= 0) {
3069 struct cam_ccbq
*ccbq
;
3071 ccbq
= &abort_ccb
->ccb_h
.path
->device
->ccbq
;
3072 cam_ccbq_remove_ccb(ccbq
, abort_ccb
);
3073 abort_ccb
->ccb_h
.status
=
3074 CAM_REQ_ABORTED
|CAM_DEV_QFRZN
;
3075 xpt_freeze_devq(abort_ccb
->ccb_h
.path
, 1);
3076 xpt_done(abort_ccb
);
3077 start_ccb
->ccb_h
.status
= CAM_REQ_CMP
;
3080 if (abort_ccb
->ccb_h
.pinfo
.index
== CAM_UNQUEUED_INDEX
3081 && (abort_ccb
->ccb_h
.status
& CAM_SIM_QUEUED
) == 0) {
3083 * We've caught this ccb en route to
3084 * the SIM. Flag it for abort and the
3085 * SIM will do so just before starting
3086 * real work on the CCB.
3088 abort_ccb
->ccb_h
.status
=
3089 CAM_REQ_ABORTED
|CAM_DEV_QFRZN
;
3090 xpt_freeze_devq(abort_ccb
->ccb_h
.path
, 1);
3091 start_ccb
->ccb_h
.status
= CAM_REQ_CMP
;
3095 if (XPT_FC_IS_QUEUED(abort_ccb
)
3096 && (abort_ccb
->ccb_h
.pinfo
.index
== CAM_DONEQ_INDEX
)) {
3098 * It's already completed but waiting
3099 * for our SWI to get to it.
3101 start_ccb
->ccb_h
.status
= CAM_UA_ABORT
;
3105 * If we weren't able to take care of the abort request
3106 * in the XPT, pass the request down to the SIM for processing.
3110 case XPT_ACCEPT_TARGET_IO
:
3112 case XPT_IMMED_NOTIFY
:
3113 case XPT_NOTIFY_ACK
:
3114 case XPT_GET_TRAN_SETTINGS
:
3117 struct cam_sim
*sim
;
3119 sim
= start_ccb
->ccb_h
.path
->bus
->sim
;
3120 (*(sim
->sim_action
))(sim
, start_ccb
);
3125 struct cam_sim
*sim
;
3127 sim
= start_ccb
->ccb_h
.path
->bus
->sim
;
3128 (*(sim
->sim_action
))(sim
, start_ccb
);
3131 case XPT_PATH_STATS
:
3132 start_ccb
->cpis
.last_reset
=
3133 start_ccb
->ccb_h
.path
->bus
->last_reset
;
3134 start_ccb
->ccb_h
.status
= CAM_REQ_CMP
;
3140 dev
= start_ccb
->ccb_h
.path
->device
;
3141 if ((dev
->flags
& CAM_DEV_UNCONFIGURED
) != 0) {
3142 start_ccb
->ccb_h
.status
= CAM_DEV_NOT_THERE
;
3144 struct ccb_getdev
*cgd
;
3148 cgd
= &start_ccb
->cgd
;
3149 bus
= cgd
->ccb_h
.path
->bus
;
3150 tar
= cgd
->ccb_h
.path
->target
;
3151 cgd
->inq_data
= dev
->inq_data
;
3152 cgd
->ccb_h
.status
= CAM_REQ_CMP
;
3153 cgd
->serial_num_len
= dev
->serial_num_len
;
3154 if ((dev
->serial_num_len
> 0)
3155 && (dev
->serial_num
!= NULL
))
3156 bcopy(dev
->serial_num
, cgd
->serial_num
,
3157 dev
->serial_num_len
);
3161 case XPT_GDEV_STATS
:
3165 dev
= start_ccb
->ccb_h
.path
->device
;
3166 if ((dev
->flags
& CAM_DEV_UNCONFIGURED
) != 0) {
3167 start_ccb
->ccb_h
.status
= CAM_DEV_NOT_THERE
;
3169 struct ccb_getdevstats
*cgds
;
3173 cgds
= &start_ccb
->cgds
;
3174 bus
= cgds
->ccb_h
.path
->bus
;
3175 tar
= cgds
->ccb_h
.path
->target
;
3176 cgds
->dev_openings
= dev
->ccbq
.dev_openings
;
3177 cgds
->dev_active
= dev
->ccbq
.dev_active
;
3178 cgds
->devq_openings
= dev
->ccbq
.devq_openings
;
3179 cgds
->devq_queued
= dev
->ccbq
.queue
.entries
;
3180 cgds
->held
= dev
->ccbq
.held
;
3181 cgds
->last_reset
= tar
->last_reset
;
3182 cgds
->maxtags
= dev
->quirk
->maxtags
;
3183 cgds
->mintags
= dev
->quirk
->mintags
;
3184 if (timevalcmp(&tar
->last_reset
, &bus
->last_reset
, <))
3185 cgds
->last_reset
= bus
->last_reset
;
3186 cgds
->ccb_h
.status
= CAM_REQ_CMP
;
3192 struct cam_periph
*nperiph
;
3193 struct periph_list
*periph_head
;
3194 struct ccb_getdevlist
*cgdl
;
3196 struct cam_ed
*device
;
3203 * Don't want anyone mucking with our data.
3205 device
= start_ccb
->ccb_h
.path
->device
;
3206 periph_head
= &device
->periphs
;
3207 cgdl
= &start_ccb
->cgdl
;
3210 * Check and see if the list has changed since the user
3211 * last requested a list member. If so, tell them that the
3212 * list has changed, and therefore they need to start over
3213 * from the beginning.
3215 if ((cgdl
->index
!= 0) &&
3216 (cgdl
->generation
!= device
->generation
)) {
3217 cgdl
->status
= CAM_GDEVLIST_LIST_CHANGED
;
3222 * Traverse the list of peripherals and attempt to find
3223 * the requested peripheral.
3225 for (nperiph
= SLIST_FIRST(periph_head
), i
= 0;
3226 (nperiph
!= NULL
) && (i
<= cgdl
->index
);
3227 nperiph
= SLIST_NEXT(nperiph
, periph_links
), i
++) {
3228 if (i
== cgdl
->index
) {
3229 strncpy(cgdl
->periph_name
,
3230 nperiph
->periph_name
,
3232 cgdl
->unit_number
= nperiph
->unit_number
;
3237 cgdl
->status
= CAM_GDEVLIST_ERROR
;
3241 if (nperiph
== NULL
)
3242 cgdl
->status
= CAM_GDEVLIST_LAST_DEVICE
;
3244 cgdl
->status
= CAM_GDEVLIST_MORE_DEVS
;
3247 cgdl
->generation
= device
->generation
;
3249 cgdl
->ccb_h
.status
= CAM_REQ_CMP
;
3254 dev_pos_type position_type
;
3255 struct ccb_dev_match
*cdm
;
3258 cdm
= &start_ccb
->cdm
;
3261 * There are two ways of getting at information in the EDT.
3262 * The first way is via the primary EDT tree. It starts
3263 * with a list of busses, then a list of targets on a bus,
3264 * then devices/luns on a target, and then peripherals on a
3265 * device/lun. The "other" way is by the peripheral driver
3266 * lists. The peripheral driver lists are organized by
3267 * peripheral driver. (obviously) So it makes sense to
3268 * use the peripheral driver list if the user is looking
3269 * for something like "da1", or all "da" devices. If the
3270 * user is looking for something on a particular bus/target
3271 * or lun, it's generally better to go through the EDT tree.
3274 if (cdm
->pos
.position_type
!= CAM_DEV_POS_NONE
)
3275 position_type
= cdm
->pos
.position_type
;
3279 position_type
= CAM_DEV_POS_NONE
;
3281 for (i
= 0; i
< cdm
->num_patterns
; i
++) {
3282 if ((cdm
->patterns
[i
].type
== DEV_MATCH_BUS
)
3283 ||(cdm
->patterns
[i
].type
== DEV_MATCH_DEVICE
)){
3284 position_type
= CAM_DEV_POS_EDT
;
3289 if (cdm
->num_patterns
== 0)
3290 position_type
= CAM_DEV_POS_EDT
;
3291 else if (position_type
== CAM_DEV_POS_NONE
)
3292 position_type
= CAM_DEV_POS_PDRV
;
3295 switch(position_type
& CAM_DEV_POS_TYPEMASK
) {
3296 case CAM_DEV_POS_EDT
:
3297 ret
= xptedtmatch(cdm
);
3299 case CAM_DEV_POS_PDRV
:
3300 ret
= xptperiphlistmatch(cdm
);
3303 cdm
->status
= CAM_DEV_MATCH_ERROR
;
3307 if (cdm
->status
== CAM_DEV_MATCH_ERROR
)
3308 start_ccb
->ccb_h
.status
= CAM_REQ_CMP_ERR
;
3310 start_ccb
->ccb_h
.status
= CAM_REQ_CMP
;
3316 struct ccb_setasync
*csa
;
3317 struct async_node
*cur_entry
;
3318 struct async_list
*async_head
;
3321 csa
= &start_ccb
->csa
;
3322 added
= csa
->event_enable
;
3323 async_head
= &csa
->ccb_h
.path
->device
->asyncs
;
3326 * If there is already an entry for us, simply
3329 cur_entry
= SLIST_FIRST(async_head
);
3330 while (cur_entry
!= NULL
) {
3331 if ((cur_entry
->callback_arg
== csa
->callback_arg
)
3332 && (cur_entry
->callback
== csa
->callback
))
3334 cur_entry
= SLIST_NEXT(cur_entry
, links
);
3337 if (cur_entry
!= NULL
) {
3339 * If the request has no flags set,
3342 added
&= ~cur_entry
->event_enable
;
3343 if (csa
->event_enable
== 0) {
3344 SLIST_REMOVE(async_head
, cur_entry
,
3346 csa
->ccb_h
.path
->device
->refcount
--;
3347 kfree(cur_entry
, M_CAMXPT
);
3349 cur_entry
->event_enable
= csa
->event_enable
;
3352 cur_entry
= kmalloc(sizeof(*cur_entry
), M_CAMXPT
,
3354 cur_entry
->event_enable
= csa
->event_enable
;
3355 cur_entry
->callback_arg
= csa
->callback_arg
;
3356 cur_entry
->callback
= csa
->callback
;
3357 SLIST_INSERT_HEAD(async_head
, cur_entry
, links
);
3358 csa
->ccb_h
.path
->device
->refcount
++;
3362 * Need to decouple this operation via a taskqueue so that
3363 * the locking doesn't become a mess.
3365 if ((added
& (AC_FOUND_DEVICE
| AC_PATH_REGISTERED
)) != 0) {
3366 struct xpt_task
*task
;
3368 task
= kmalloc(sizeof(struct xpt_task
), M_CAMXPT
,
3371 TASK_INIT(&task
->task
, 0, xpt_action_sasync_cb
, task
);
3372 task
->data1
= cur_entry
;
3373 task
->data2
= added
;
3374 taskqueue_enqueue(taskqueue_thread
[mycpuid
],
3378 start_ccb
->ccb_h
.status
= CAM_REQ_CMP
;
3383 struct ccb_relsim
*crs
;
3386 crs
= &start_ccb
->crs
;
3387 dev
= crs
->ccb_h
.path
->device
;
3390 crs
->ccb_h
.status
= CAM_DEV_NOT_THERE
;
3394 if ((crs
->release_flags
& RELSIM_ADJUST_OPENINGS
) != 0) {
3396 if (INQ_DATA_TQ_ENABLED(&dev
->inq_data
)) {
3397 /* Don't ever go below one opening */
3398 if (crs
->openings
> 0) {
3399 xpt_dev_ccbq_resize(crs
->ccb_h
.path
,
3403 xpt_print(crs
->ccb_h
.path
,
3404 "tagged openings now %d\n",
3411 if ((crs
->release_flags
& RELSIM_RELEASE_AFTER_TIMEOUT
) != 0) {
3413 if ((dev
->flags
& CAM_DEV_REL_TIMEOUT_PENDING
) != 0) {
3416 * Just extend the old timeout and decrement
3417 * the freeze count so that a single timeout
3418 * is sufficient for releasing the queue.
3420 start_ccb
->ccb_h
.flags
&= ~CAM_DEV_QFREEZE
;
3421 callout_stop(&dev
->callout
);
3424 start_ccb
->ccb_h
.flags
|= CAM_DEV_QFREEZE
;
3427 callout_reset(&dev
->callout
,
3428 (crs
->release_timeout
* hz
) / 1000,
3429 xpt_release_devq_timeout
, dev
);
3431 dev
->flags
|= CAM_DEV_REL_TIMEOUT_PENDING
;
3435 if ((crs
->release_flags
& RELSIM_RELEASE_AFTER_CMDCMPLT
) != 0) {
3437 if ((dev
->flags
& CAM_DEV_REL_ON_COMPLETE
) != 0) {
3439 * Decrement the freeze count so that a single
3440 * completion is still sufficient to unfreeze
3443 start_ccb
->ccb_h
.flags
&= ~CAM_DEV_QFREEZE
;
3446 dev
->flags
|= CAM_DEV_REL_ON_COMPLETE
;
3447 start_ccb
->ccb_h
.flags
|= CAM_DEV_QFREEZE
;
3451 if ((crs
->release_flags
& RELSIM_RELEASE_AFTER_QEMPTY
) != 0) {
3453 if ((dev
->flags
& CAM_DEV_REL_ON_QUEUE_EMPTY
) != 0
3454 || (dev
->ccbq
.dev_active
== 0)) {
3456 start_ccb
->ccb_h
.flags
&= ~CAM_DEV_QFREEZE
;
3459 dev
->flags
|= CAM_DEV_REL_ON_QUEUE_EMPTY
;
3460 start_ccb
->ccb_h
.flags
|= CAM_DEV_QFREEZE
;
3464 if ((start_ccb
->ccb_h
.flags
& CAM_DEV_QFREEZE
) == 0) {
3466 xpt_release_devq(crs
->ccb_h
.path
, /*count*/1,
3469 start_ccb
->crs
.qfrozen_cnt
= dev
->qfrozen_cnt
;
3470 start_ccb
->ccb_h
.status
= CAM_REQ_CMP
;
3474 xpt_scan_bus(start_ccb
->ccb_h
.path
->periph
, start_ccb
);
3477 xpt_scan_lun(start_ccb
->ccb_h
.path
->periph
,
3478 start_ccb
->ccb_h
.path
, start_ccb
->crcn
.flags
,
3483 #ifdef CAM_DEBUG_DELAY
3484 cam_debug_delay
= CAM_DEBUG_DELAY
;
3486 cam_dflags
= start_ccb
->cdbg
.flags
;
3487 if (cam_dpath
!= NULL
) {
3488 xpt_free_path(cam_dpath
);
3492 if (cam_dflags
!= CAM_DEBUG_NONE
) {
3493 if (xpt_create_path(&cam_dpath
, xpt_periph
,
3494 start_ccb
->ccb_h
.path_id
,
3495 start_ccb
->ccb_h
.target_id
,
3496 start_ccb
->ccb_h
.target_lun
) !=
3498 start_ccb
->ccb_h
.status
= CAM_RESRC_UNAVAIL
;
3499 cam_dflags
= CAM_DEBUG_NONE
;
3501 start_ccb
->ccb_h
.status
= CAM_REQ_CMP
;
3502 xpt_print(cam_dpath
, "debugging flags now %x\n",
3507 start_ccb
->ccb_h
.status
= CAM_REQ_CMP
;
3509 #else /* !CAMDEBUG */
3510 start_ccb
->ccb_h
.status
= CAM_FUNC_NOTAVAIL
;
3511 #endif /* CAMDEBUG */
3515 if ((start_ccb
->ccb_h
.flags
& CAM_DEV_QFREEZE
) != 0)
3516 xpt_freeze_devq(start_ccb
->ccb_h
.path
, 1);
3517 start_ccb
->ccb_h
.status
= CAM_REQ_CMP
;
3524 start_ccb
->ccb_h
.status
= CAM_PROVIDE_FAIL
;
3530 xpt_polled_action(union ccb
*start_ccb
)
3533 struct cam_sim
*sim
;
3534 struct cam_devq
*devq
;
3537 timeout
= start_ccb
->ccb_h
.timeout
;
3538 sim
= start_ccb
->ccb_h
.path
->bus
->sim
;
3540 dev
= start_ccb
->ccb_h
.path
->device
;
3542 sim_lock_assert_owned(sim
->lock
);
3545 * Steal an opening so that no other queued requests
3546 * can get it before us while we simulate interrupts.
3548 dev
->ccbq
.devq_openings
--;
3549 dev
->ccbq
.dev_openings
--;
3551 while(((devq
&& devq
->send_openings
<= 0) || dev
->ccbq
.dev_openings
< 0)
3552 && (--timeout
> 0)) {
3554 (*(sim
->sim_poll
))(sim
);
3555 camisr_runqueue(sim
);
3558 dev
->ccbq
.devq_openings
++;
3559 dev
->ccbq
.dev_openings
++;
3562 xpt_action(start_ccb
);
3563 while(--timeout
> 0) {
3564 (*(sim
->sim_poll
))(sim
);
3565 camisr_runqueue(sim
);
3566 if ((start_ccb
->ccb_h
.status
& CAM_STATUS_MASK
)
3573 * XXX Is it worth adding a sim_timeout entry
3574 * point so we can attempt recovery? If
3575 * this is only used for dumps, I don't think
3578 start_ccb
->ccb_h
.status
= CAM_CMD_TIMEOUT
;
3581 start_ccb
->ccb_h
.status
= CAM_RESRC_UNAVAIL
;
3586 * Schedule a peripheral driver to receive a ccb when it's
3587 * target device has space for more transactions.
3590 xpt_schedule(struct cam_periph
*perph
, u_int32_t new_priority
)
3592 struct cam_ed
*device
;
3593 union ccb
*work_ccb
;
3596 sim_lock_assert_owned(perph
->sim
->lock
);
3598 CAM_DEBUG(perph
->path
, CAM_DEBUG_TRACE
, ("xpt_schedule\n"));
3599 device
= perph
->path
->device
;
3600 if (periph_is_queued(perph
)) {
3601 /* Simply reorder based on new priority */
3602 CAM_DEBUG(perph
->path
, CAM_DEBUG_SUBTRACE
,
3603 (" change priority to %d\n", new_priority
));
3604 if (new_priority
< perph
->pinfo
.priority
) {
3605 camq_change_priority(&device
->drvq
,
3610 } else if (perph
->path
->bus
->sim
== &cam_dead_sim
) {
3611 /* The SIM is gone so just call periph_start directly. */
3612 work_ccb
= xpt_get_ccb(perph
->path
->device
);
3613 if (work_ccb
== NULL
)
3615 xpt_setup_ccb(&work_ccb
->ccb_h
, perph
->path
, new_priority
);
3616 perph
->pinfo
.priority
= new_priority
;
3617 perph
->periph_start(perph
, work_ccb
);
3620 /* New entry on the queue */
3621 CAM_DEBUG(perph
->path
, CAM_DEBUG_SUBTRACE
,
3622 (" added periph to queue\n"));
3623 perph
->pinfo
.priority
= new_priority
;
3624 perph
->pinfo
.generation
= ++device
->drvq
.generation
;
3625 camq_insert(&device
->drvq
, &perph
->pinfo
);
3626 runq
= xpt_schedule_dev_allocq(perph
->path
->bus
, device
);
3629 CAM_DEBUG(perph
->path
, CAM_DEBUG_SUBTRACE
,
3630 (" calling xpt_run_devq\n"));
3631 xpt_run_dev_allocq(perph
->path
->bus
);
3637 * Schedule a device to run on a given queue.
3638 * If the device was inserted as a new entry on the queue,
3639 * return 1 meaning the device queue should be run. If we
3640 * were already queued, implying someone else has already
3641 * started the queue, return 0 so the caller doesn't attempt
3645 xpt_schedule_dev(struct camq
*queue
, cam_pinfo
*pinfo
,
3646 u_int32_t new_priority
)
3649 u_int32_t old_priority
;
3651 CAM_DEBUG_PRINT(CAM_DEBUG_XPT
, ("xpt_schedule_dev\n"));
3653 old_priority
= pinfo
->priority
;
3656 * Are we already queued?
3658 if (pinfo
->index
!= CAM_UNQUEUED_INDEX
) {
3659 /* Simply reorder based on new priority */
3660 if (new_priority
< old_priority
) {
3661 camq_change_priority(queue
, pinfo
->index
,
3663 CAM_DEBUG_PRINT(CAM_DEBUG_XPT
,
3664 ("changed priority to %d\n",
3669 /* New entry on the queue */
3670 if (new_priority
< old_priority
)
3671 pinfo
->priority
= new_priority
;
3673 CAM_DEBUG_PRINT(CAM_DEBUG_XPT
,
3674 ("Inserting onto queue\n"));
3675 pinfo
->generation
= ++queue
->generation
;
3676 camq_insert(queue
, pinfo
);
3683 xpt_run_dev_allocq(struct cam_eb
*bus
)
3685 struct cam_devq
*devq
;
3687 if ((devq
= bus
->sim
->devq
) == NULL
) {
3688 CAM_DEBUG_PRINT(CAM_DEBUG_XPT
, ("xpt_run_dev_allocq: NULL devq\n"));
3691 CAM_DEBUG_PRINT(CAM_DEBUG_XPT
, ("xpt_run_dev_allocq\n"));
3693 CAM_DEBUG_PRINT(CAM_DEBUG_XPT
,
3694 (" qfrozen_cnt == 0x%x, entries == %d, "
3695 "openings == %d, active == %d\n",
3696 devq
->alloc_queue
.qfrozen_cnt
,
3697 devq
->alloc_queue
.entries
,
3698 devq
->alloc_openings
,
3699 devq
->alloc_active
));
3701 devq
->alloc_queue
.qfrozen_cnt
++;
3702 while ((devq
->alloc_queue
.entries
> 0)
3703 && (devq
->alloc_openings
> 0)
3704 && (devq
->alloc_queue
.qfrozen_cnt
<= 1)) {
3705 struct cam_ed_qinfo
*qinfo
;
3706 struct cam_ed
*device
;
3707 union ccb
*work_ccb
;
3708 struct cam_periph
*drv
;
3711 qinfo
= (struct cam_ed_qinfo
*)camq_remove(&devq
->alloc_queue
,
3713 device
= qinfo
->device
;
3715 CAM_DEBUG_PRINT(CAM_DEBUG_XPT
,
3716 ("running device %p\n", device
));
3718 drvq
= &device
->drvq
;
3721 if (drvq
->entries
<= 0) {
3722 panic("xpt_run_dev_allocq: "
3723 "Device on queue without any work to do");
3726 if ((work_ccb
= xpt_get_ccb(device
)) != NULL
) {
3727 devq
->alloc_openings
--;
3728 devq
->alloc_active
++;
3729 drv
= (struct cam_periph
*)camq_remove(drvq
, CAMQ_HEAD
);
3730 xpt_setup_ccb(&work_ccb
->ccb_h
, drv
->path
,
3731 drv
->pinfo
.priority
);
3732 CAM_DEBUG_PRINT(CAM_DEBUG_XPT
,
3733 ("calling periph start\n"));
3734 drv
->periph_start(drv
, work_ccb
);
3737 * Malloc failure in alloc_ccb
3740 * XXX add us to a list to be run from free_ccb
3741 * if we don't have any ccbs active on this
3742 * device queue otherwise we may never get run
3748 if (drvq
->entries
> 0) {
3749 /* We have more work. Attempt to reschedule */
3750 xpt_schedule_dev_allocq(bus
, device
);
3753 devq
->alloc_queue
.qfrozen_cnt
--;
3757 xpt_run_dev_sendq(struct cam_eb
*bus
)
3759 struct cam_devq
*devq
;
3761 if ((devq
= bus
->sim
->devq
) == NULL
) {
3762 CAM_DEBUG_PRINT(CAM_DEBUG_XPT
, ("xpt_run_dev_sendq: NULL devq\n"));
3765 CAM_DEBUG_PRINT(CAM_DEBUG_XPT
, ("xpt_run_dev_sendq\n"));
3767 devq
->send_queue
.qfrozen_cnt
++;
3768 while ((devq
->send_queue
.entries
> 0)
3769 && (devq
->send_openings
> 0)) {
3770 struct cam_ed_qinfo
*qinfo
;
3771 struct cam_ed
*device
;
3772 union ccb
*work_ccb
;
3773 struct cam_sim
*sim
;
3775 if (devq
->send_queue
.qfrozen_cnt
> 1) {
3779 qinfo
= (struct cam_ed_qinfo
*)camq_remove(&devq
->send_queue
,
3781 device
= qinfo
->device
;
3784 * If the device has been "frozen", don't attempt
3787 if (device
->qfrozen_cnt
> 0) {
3791 CAM_DEBUG_PRINT(CAM_DEBUG_XPT
,
3792 ("running device %p\n", device
));
3794 work_ccb
= cam_ccbq_peek_ccb(&device
->ccbq
, CAMQ_HEAD
);
3795 if (work_ccb
== NULL
) {
3796 kprintf("device on run queue with no ccbs???\n");
3800 if ((work_ccb
->ccb_h
.flags
& CAM_HIGH_POWER
) != 0) {
3802 lockmgr(&xsoftc
.xpt_lock
, LK_EXCLUSIVE
);
3803 if (xsoftc
.num_highpower
<= 0) {
3805 * We got a high power command, but we
3806 * don't have any available slots. Freeze
3807 * the device queue until we have a slot
3810 device
->qfrozen_cnt
++;
3811 STAILQ_INSERT_TAIL(&xsoftc
.highpowerq
,
3815 lockmgr(&xsoftc
.xpt_lock
, LK_RELEASE
);
3819 * Consume a high power slot while
3822 xsoftc
.num_highpower
--;
3824 lockmgr(&xsoftc
.xpt_lock
, LK_RELEASE
);
3826 devq
->active_dev
= device
;
3827 cam_ccbq_remove_ccb(&device
->ccbq
, work_ccb
);
3829 cam_ccbq_send_ccb(&device
->ccbq
, work_ccb
);
3831 devq
->send_openings
--;
3832 devq
->send_active
++;
3834 if (device
->ccbq
.queue
.entries
> 0)
3835 xpt_schedule_dev_sendq(bus
, device
);
3837 if (work_ccb
&& (work_ccb
->ccb_h
.flags
& CAM_DEV_QFREEZE
) != 0){
3839 * The client wants to freeze the queue
3840 * after this CCB is sent.
3842 device
->qfrozen_cnt
++;
3845 /* In Target mode, the peripheral driver knows best... */
3846 if (work_ccb
->ccb_h
.func_code
== XPT_SCSI_IO
) {
3847 if ((device
->inq_flags
& SID_CmdQue
) != 0
3848 && work_ccb
->csio
.tag_action
!= CAM_TAG_ACTION_NONE
)
3849 work_ccb
->ccb_h
.flags
|= CAM_TAG_ACTION_VALID
;
3852 * Clear this in case of a retried CCB that
3853 * failed due to a rejected tag.
3855 work_ccb
->ccb_h
.flags
&= ~CAM_TAG_ACTION_VALID
;
3859 * Device queues can be shared among multiple sim instances
3860 * that reside on different busses. Use the SIM in the queue
3861 * CCB's path, rather than the one in the bus that was passed
3862 * into this function.
3864 sim
= work_ccb
->ccb_h
.path
->bus
->sim
;
3865 (*(sim
->sim_action
))(sim
, work_ccb
);
3867 devq
->active_dev
= NULL
;
3869 devq
->send_queue
.qfrozen_cnt
--;
3873 * This function merges stuff from the slave ccb into the master ccb, while
3874 * keeping important fields in the master ccb constant.
3877 xpt_merge_ccb(union ccb
*master_ccb
, union ccb
*slave_ccb
)
3880 * Pull fields that are valid for peripheral drivers to set
3881 * into the master CCB along with the CCB "payload".
3883 master_ccb
->ccb_h
.retry_count
= slave_ccb
->ccb_h
.retry_count
;
3884 master_ccb
->ccb_h
.func_code
= slave_ccb
->ccb_h
.func_code
;
3885 master_ccb
->ccb_h
.timeout
= slave_ccb
->ccb_h
.timeout
;
3886 master_ccb
->ccb_h
.flags
= slave_ccb
->ccb_h
.flags
;
3887 bcopy(&(&slave_ccb
->ccb_h
)[1], &(&master_ccb
->ccb_h
)[1],
3888 sizeof(union ccb
) - sizeof(struct ccb_hdr
));
3892 xpt_setup_ccb(struct ccb_hdr
*ccb_h
, struct cam_path
*path
, u_int32_t priority
)
3894 CAM_DEBUG(path
, CAM_DEBUG_TRACE
, ("xpt_setup_ccb\n"));
3895 callout_init(&ccb_h
->timeout_ch
);
3896 ccb_h
->pinfo
.priority
= priority
;
3898 ccb_h
->path_id
= path
->bus
->path_id
;
3900 ccb_h
->target_id
= path
->target
->target_id
;
3902 ccb_h
->target_id
= CAM_TARGET_WILDCARD
;
3904 ccb_h
->target_lun
= path
->device
->lun_id
;
3905 ccb_h
->pinfo
.generation
= ++path
->device
->ccbq
.queue
.generation
;
3907 ccb_h
->target_lun
= CAM_TARGET_WILDCARD
;
3909 ccb_h
->pinfo
.index
= CAM_UNQUEUED_INDEX
;
3913 /* Path manipulation functions */
3915 xpt_create_path(struct cam_path
**new_path_ptr
, struct cam_periph
*perph
,
3916 path_id_t path_id
, target_id_t target_id
, lun_id_t lun_id
)
3918 struct cam_path
*path
;
3921 path
= kmalloc(sizeof(*path
), M_CAMXPT
, M_INTWAIT
);
3922 status
= xpt_compile_path(path
, perph
, path_id
, target_id
, lun_id
);
3923 if (status
!= CAM_REQ_CMP
) {
3924 kfree(path
, M_CAMXPT
);
3927 *new_path_ptr
= path
;
3932 xpt_create_path_unlocked(struct cam_path
**new_path_ptr
,
3933 struct cam_periph
*periph
, path_id_t path_id
,
3934 target_id_t target_id
, lun_id_t lun_id
)
3936 struct cam_path
*path
;
3937 struct cam_eb
*bus
= NULL
;
3939 int need_unlock
= 0;
3941 path
= (struct cam_path
*)kmalloc(sizeof(*path
), M_CAMXPT
, M_WAITOK
);
3943 if (path_id
!= CAM_BUS_WILDCARD
) {
3944 bus
= xpt_find_bus(path_id
);
3947 CAM_SIM_LOCK(bus
->sim
);
3950 status
= xpt_compile_path(path
, periph
, path_id
, target_id
, lun_id
);
3952 CAM_SIM_UNLOCK(bus
->sim
);
3953 if (status
!= CAM_REQ_CMP
) {
3954 kfree(path
, M_CAMXPT
);
3957 *new_path_ptr
= path
;
3962 xpt_compile_path(struct cam_path
*new_path
, struct cam_periph
*perph
,
3963 path_id_t path_id
, target_id_t target_id
, lun_id_t lun_id
)
3966 struct cam_et
*target
;
3967 struct cam_ed
*device
;
3970 status
= CAM_REQ_CMP
; /* Completed without error */
3971 target
= NULL
; /* Wildcarded */
3972 device
= NULL
; /* Wildcarded */
3975 * We will potentially modify the EDT, so block interrupts
3976 * that may attempt to create cam paths.
3978 bus
= xpt_find_bus(path_id
);
3980 status
= CAM_PATH_INVALID
;
3982 target
= xpt_find_target(bus
, target_id
);
3983 if (target
== NULL
) {
3985 struct cam_et
*new_target
;
3987 new_target
= xpt_alloc_target(bus
, target_id
);
3988 if (new_target
== NULL
) {
3989 status
= CAM_RESRC_UNAVAIL
;
3991 target
= new_target
;
3994 if (target
!= NULL
) {
3995 device
= xpt_find_device(target
, lun_id
);
3996 if (device
== NULL
) {
3998 struct cam_ed
*new_device
;
4000 new_device
= xpt_alloc_device(bus
,
4003 if (new_device
== NULL
) {
4004 status
= CAM_RESRC_UNAVAIL
;
4006 device
= new_device
;
4013 * Only touch the user's data if we are successful.
4015 if (status
== CAM_REQ_CMP
) {
4016 new_path
->periph
= perph
;
4017 new_path
->bus
= bus
;
4018 new_path
->target
= target
;
4019 new_path
->device
= device
;
4020 CAM_DEBUG(new_path
, CAM_DEBUG_TRACE
, ("xpt_compile_path\n"));
4023 xpt_release_device(bus
, target
, device
);
4025 xpt_release_target(bus
, target
);
4027 xpt_release_bus(bus
);
4033 xpt_release_path(struct cam_path
*path
)
4035 CAM_DEBUG(path
, CAM_DEBUG_TRACE
, ("xpt_release_path\n"));
4036 if (path
->device
!= NULL
) {
4037 xpt_release_device(path
->bus
, path
->target
, path
->device
);
4038 path
->device
= NULL
;
4040 if (path
->target
!= NULL
) {
4041 xpt_release_target(path
->bus
, path
->target
);
4042 path
->target
= NULL
;
4044 if (path
->bus
!= NULL
) {
4045 xpt_release_bus(path
->bus
);
4051 xpt_free_path(struct cam_path
*path
)
4053 CAM_DEBUG(path
, CAM_DEBUG_TRACE
, ("xpt_free_path\n"));
4054 xpt_release_path(path
);
4055 kfree(path
, M_CAMXPT
);
4060 * Return -1 for failure, 0 for exact match, 1 for match with wildcards
4061 * in path1, 2 for match with wildcards in path2.
4064 xpt_path_comp(struct cam_path
*path1
, struct cam_path
*path2
)
4068 if (path1
->bus
!= path2
->bus
) {
4069 if (path1
->bus
->path_id
== CAM_BUS_WILDCARD
)
4071 else if (path2
->bus
->path_id
== CAM_BUS_WILDCARD
)
4076 if (path1
->target
!= path2
->target
) {
4077 if (path1
->target
->target_id
== CAM_TARGET_WILDCARD
) {
4080 } else if (path2
->target
->target_id
== CAM_TARGET_WILDCARD
)
4085 if (path1
->device
!= path2
->device
) {
4086 if (path1
->device
->lun_id
== CAM_LUN_WILDCARD
) {
4089 } else if (path2
->device
->lun_id
== CAM_LUN_WILDCARD
)
4098 xpt_print_path(struct cam_path
*path
)
4102 kprintf("(nopath): ");
4104 if (path
->periph
!= NULL
)
4105 kprintf("(%s%d:", path
->periph
->periph_name
,
4106 path
->periph
->unit_number
);
4108 kprintf("(noperiph:");
4110 if (path
->bus
!= NULL
)
4111 kprintf("%s%d:%d:", path
->bus
->sim
->sim_name
,
4112 path
->bus
->sim
->unit_number
,
4113 path
->bus
->sim
->bus_id
);
4117 if (path
->target
!= NULL
)
4118 kprintf("%d:", path
->target
->target_id
);
4122 if (path
->device
!= NULL
)
4123 kprintf("%d): ", path
->device
->lun_id
);
4130 xpt_print(struct cam_path
*path
, const char *fmt
, ...)
4133 xpt_print_path(path
);
4134 __va_start(ap
, fmt
);
4140 xpt_path_string(struct cam_path
*path
, char *str
, size_t str_len
)
4144 sim_lock_assert_owned(path
->bus
->sim
->lock
);
4146 sbuf_new(&sb
, str
, str_len
, 0);
4149 sbuf_printf(&sb
, "(nopath): ");
4151 if (path
->periph
!= NULL
)
4152 sbuf_printf(&sb
, "(%s%d:", path
->periph
->periph_name
,
4153 path
->periph
->unit_number
);
4155 sbuf_printf(&sb
, "(noperiph:");
4157 if (path
->bus
!= NULL
)
4158 sbuf_printf(&sb
, "%s%d:%d:", path
->bus
->sim
->sim_name
,
4159 path
->bus
->sim
->unit_number
,
4160 path
->bus
->sim
->bus_id
);
4162 sbuf_printf(&sb
, "nobus:");
4164 if (path
->target
!= NULL
)
4165 sbuf_printf(&sb
, "%d:", path
->target
->target_id
);
4167 sbuf_printf(&sb
, "X:");
4169 if (path
->device
!= NULL
)
4170 sbuf_printf(&sb
, "%d): ", path
->device
->lun_id
);
4172 sbuf_printf(&sb
, "X): ");
4176 return(sbuf_len(&sb
));
4180 xpt_path_path_id(struct cam_path
*path
)
4182 sim_lock_assert_owned(path
->bus
->sim
->lock
);
4184 return(path
->bus
->path_id
);
4188 xpt_path_target_id(struct cam_path
*path
)
4190 sim_lock_assert_owned(path
->bus
->sim
->lock
);
4192 if (path
->target
!= NULL
)
4193 return (path
->target
->target_id
);
4195 return (CAM_TARGET_WILDCARD
);
4199 xpt_path_lun_id(struct cam_path
*path
)
4201 sim_lock_assert_owned(path
->bus
->sim
->lock
);
4203 if (path
->device
!= NULL
)
4204 return (path
->device
->lun_id
);
4206 return (CAM_LUN_WILDCARD
);
4210 xpt_path_sim(struct cam_path
*path
)
4212 return (path
->bus
->sim
);
4216 xpt_path_periph(struct cam_path
*path
)
4218 sim_lock_assert_owned(path
->bus
->sim
->lock
);
4220 return (path
->periph
);
4224 xpt_path_serialno(struct cam_path
*path
)
4226 return (path
->device
->serial_num
);
4230 * Release a CAM control block for the caller. Remit the cost of the structure
4231 * to the device referenced by the path. If the this device had no 'credits'
4232 * and peripheral drivers have registered async callbacks for this notification
4236 xpt_release_ccb(union ccb
*free_ccb
)
4238 struct cam_path
*path
;
4239 struct cam_ed
*device
;
4241 struct cam_sim
*sim
;
4243 CAM_DEBUG_PRINT(CAM_DEBUG_XPT
, ("xpt_release_ccb\n"));
4244 path
= free_ccb
->ccb_h
.path
;
4245 device
= path
->device
;
4249 sim_lock_assert_owned(sim
->lock
);
4251 cam_ccbq_release_opening(&device
->ccbq
);
4252 if (sim
->ccb_count
> sim
->max_ccbs
) {
4253 xpt_free_ccb(free_ccb
);
4255 } else if (sim
== &cam_dead_sim
) {
4256 xpt_free_ccb(free_ccb
);
4258 SLIST_INSERT_HEAD(&sim
->ccb_freeq
, &free_ccb
->ccb_h
,
4261 if (sim
->devq
== NULL
) {
4264 sim
->devq
->alloc_openings
++;
4265 sim
->devq
->alloc_active
--;
4266 /* XXX Turn this into an inline function - xpt_run_device?? */
4267 if ((device_is_alloc_queued(device
) == 0)
4268 && (device
->drvq
.entries
> 0)) {
4269 xpt_schedule_dev_allocq(bus
, device
);
4271 if (dev_allocq_is_runnable(sim
->devq
))
4272 xpt_run_dev_allocq(bus
);
4275 /* Functions accessed by SIM drivers */
4278 * A sim structure, listing the SIM entry points and instance
4279 * identification info is passed to xpt_bus_register to hook the SIM
4280 * into the CAM framework. xpt_bus_register creates a cam_eb entry
4281 * for this new bus and places it in the array of busses and assigns
4282 * it a path_id. The path_id may be influenced by "hard wiring"
4283 * information specified by the user. Once interrupt services are
4284 * availible, the bus will be probed.
4287 xpt_bus_register(struct cam_sim
*sim
, u_int32_t bus
)
4289 struct cam_eb
*new_bus
;
4290 struct cam_eb
*old_bus
;
4291 struct ccb_pathinq cpi
;
4293 sim_lock_assert_owned(sim
->lock
);
4296 new_bus
= kmalloc(sizeof(*new_bus
), M_CAMXPT
, M_INTWAIT
);
4298 if (strcmp(sim
->sim_name
, "xpt") != 0) {
4300 xptpathid(sim
->sim_name
, sim
->unit_number
, sim
->bus_id
);
4303 TAILQ_INIT(&new_bus
->et_entries
);
4304 new_bus
->path_id
= sim
->path_id
;
4307 timevalclear(&new_bus
->last_reset
);
4309 new_bus
->refcount
= 1; /* Held until a bus_deregister event */
4310 new_bus
->generation
= 0;
4311 lockmgr(&xsoftc
.xpt_topo_lock
, LK_EXCLUSIVE
);
4312 old_bus
= TAILQ_FIRST(&xsoftc
.xpt_busses
);
4313 while (old_bus
!= NULL
4314 && old_bus
->path_id
< new_bus
->path_id
)
4315 old_bus
= TAILQ_NEXT(old_bus
, links
);
4316 if (old_bus
!= NULL
)
4317 TAILQ_INSERT_BEFORE(old_bus
, new_bus
, links
);
4319 TAILQ_INSERT_TAIL(&xsoftc
.xpt_busses
, new_bus
, links
);
4320 xsoftc
.bus_generation
++;
4321 lockmgr(&xsoftc
.xpt_topo_lock
, LK_RELEASE
);
4323 /* Notify interested parties */
4324 if (sim
->path_id
!= CAM_XPT_PATH_ID
) {
4325 struct cam_path path
;
4327 xpt_compile_path(&path
, /*periph*/NULL
, sim
->path_id
,
4328 CAM_TARGET_WILDCARD
, CAM_LUN_WILDCARD
);
4329 xpt_setup_ccb(&cpi
.ccb_h
, &path
, /*priority*/1);
4330 cpi
.ccb_h
.func_code
= XPT_PATH_INQ
;
4331 xpt_action((union ccb
*)&cpi
);
4332 xpt_async(AC_PATH_REGISTERED
, &path
, &cpi
);
4333 xpt_release_path(&path
);
4335 return (CAM_SUCCESS
);
4339 * Deregister a bus. We must clean out all transactions pending on the bus.
4340 * This routine is typically called prior to cam_sim_free() (e.g. see
4341 * dev/usbmisc/umass/umass.c)
4344 xpt_bus_deregister(path_id_t pathid
)
4346 struct cam_path bus_path
;
4347 struct cam_et
*target
;
4348 struct cam_ed
*device
;
4349 struct cam_ed_qinfo
*qinfo
;
4350 struct cam_devq
*devq
;
4351 struct cam_periph
*periph
;
4352 struct cam_sim
*ccbsim
;
4353 union ccb
*work_ccb
;
4357 status
= xpt_compile_path(&bus_path
, NULL
, pathid
,
4358 CAM_TARGET_WILDCARD
, CAM_LUN_WILDCARD
);
4359 if (status
!= CAM_REQ_CMP
)
4363 * This should clear out all pending requests and timeouts, but
4364 * the ccb's may be queued to a software interrupt.
4366 * XXX AC_LOST_DEVICE does not precisely abort the pending requests,
4367 * and it really ought to.
4369 xpt_async(AC_LOST_DEVICE
, &bus_path
, NULL
);
4370 xpt_async(AC_PATH_DEREGISTERED
, &bus_path
, NULL
);
4373 * Mark the SIM as having been deregistered. This prevents
4374 * certain operations from re-queueing to it, stops new devices
4375 * from being added, etc.
4377 devq
= bus_path
.bus
->sim
->devq
;
4378 ccbsim
= bus_path
.bus
->sim
;
4379 ccbsim
->flags
|= CAM_SIM_DEREGISTERED
;
4383 * Execute any pending operations now.
4385 while ((qinfo
= (struct cam_ed_qinfo
*)camq_remove(&devq
->send_queue
,
4386 CAMQ_HEAD
)) != NULL
||
4387 (qinfo
= (struct cam_ed_qinfo
*)camq_remove(&devq
->alloc_queue
,
4388 CAMQ_HEAD
)) != NULL
) {
4390 device
= qinfo
->device
;
4391 work_ccb
= cam_ccbq_peek_ccb(&device
->ccbq
, CAMQ_HEAD
);
4392 if (work_ccb
!= NULL
) {
4393 devq
->active_dev
= device
;
4394 cam_ccbq_remove_ccb(&device
->ccbq
, work_ccb
);
4395 cam_ccbq_send_ccb(&device
->ccbq
, work_ccb
);
4396 (*(ccbsim
->sim_action
))(ccbsim
, work_ccb
);
4399 periph
= (struct cam_periph
*)camq_remove(&device
->drvq
,
4402 xpt_schedule(periph
, periph
->pinfo
.priority
);
4403 } while (work_ccb
!= NULL
|| periph
!= NULL
);
4407 * Make sure all completed CCBs are processed.
4409 while (!TAILQ_EMPTY(&ccbsim
->sim_doneq
)) {
4410 camisr_runqueue(ccbsim
);
4414 * Check for requeues, reissues asyncs if necessary
4416 if (CAMQ_GET_HEAD(&devq
->send_queue
))
4417 kprintf("camq: devq send_queue still in use (%d entries)\n",
4418 devq
->send_queue
.entries
);
4419 if (CAMQ_GET_HEAD(&devq
->alloc_queue
))
4420 kprintf("camq: devq alloc_queue still in use (%d entries)\n",
4421 devq
->alloc_queue
.entries
);
4422 if (CAMQ_GET_HEAD(&devq
->send_queue
) ||
4423 CAMQ_GET_HEAD(&devq
->alloc_queue
)) {
4424 if (++retries
< 5) {
4425 xpt_async(AC_LOST_DEVICE
, &bus_path
, NULL
);
4426 xpt_async(AC_PATH_DEREGISTERED
, &bus_path
, NULL
);
4432 * Retarget the bus and all cached sim pointers to dead_sim.
4434 * Various CAM subsystems may be holding on to targets, devices,
4435 * and/or peripherals and may attempt to use the sim pointer cached
4436 * in some of these structures during close.
4438 bus_path
.bus
->sim
= &cam_dead_sim
;
4439 TAILQ_FOREACH(target
, &bus_path
.bus
->et_entries
, links
) {
4440 TAILQ_FOREACH(device
, &target
->ed_entries
, links
) {
4441 device
->sim
= &cam_dead_sim
;
4442 SLIST_FOREACH(periph
, &device
->periphs
, periph_links
) {
4443 periph
->sim
= &cam_dead_sim
;
4449 * Repeat the async's for the benefit of any new devices, such as
4450 * might be created from completed probes. Any new device
4451 * ops will run on dead_sim.
4453 * XXX There are probably races :-(
4455 CAM_SIM_LOCK(&cam_dead_sim
);
4456 xpt_async(AC_LOST_DEVICE
, &bus_path
, NULL
);
4457 xpt_async(AC_PATH_DEREGISTERED
, &bus_path
, NULL
);
4458 CAM_SIM_UNLOCK(&cam_dead_sim
);
4460 /* Release the reference count held while registered. */
4461 xpt_release_bus(bus_path
.bus
);
4462 xpt_release_path(&bus_path
);
4464 /* Release the ref we got when the bus was registered */
4465 cam_sim_release(ccbsim
, 0);
4467 return (CAM_REQ_CMP
);
4471 xptnextfreepathid(void)
4478 lockmgr(&xsoftc
.xpt_topo_lock
, LK_EXCLUSIVE
);
4479 bus
= TAILQ_FIRST(&xsoftc
.xpt_busses
);
4481 /* Find an unoccupied pathid */
4482 while (bus
!= NULL
&& bus
->path_id
<= pathid
) {
4483 if (bus
->path_id
== pathid
)
4485 bus
= TAILQ_NEXT(bus
, links
);
4487 lockmgr(&xsoftc
.xpt_topo_lock
, LK_RELEASE
);
4490 * Ensure that this pathid is not reserved for
4491 * a bus that may be registered in the future.
4493 if (resource_string_value("scbus", pathid
, "at", &strval
) == 0) {
4495 /* Start the search over */
4496 lockmgr(&xsoftc
.xpt_topo_lock
, LK_EXCLUSIVE
);
4503 xptpathid(const char *sim_name
, int sim_unit
, int sim_bus
)
4509 pathid
= CAM_XPT_PATH_ID
;
4510 ksnprintf(buf
, sizeof(buf
), "%s%d", sim_name
, sim_unit
);
4512 while ((i
= resource_query_string(i
, "at", buf
)) != -1) {
4513 if (strcmp(resource_query_name(i
), "scbus")) {
4514 /* Avoid a bit of foot shooting. */
4517 dunit
= resource_query_unit(i
);
4518 if (dunit
< 0) /* unwired?! */
4520 if (resource_int_value("scbus", dunit
, "bus", &val
) == 0) {
4521 if (sim_bus
== val
) {
4525 } else if (sim_bus
== 0) {
4526 /* Unspecified matches bus 0 */
4530 kprintf("Ambiguous scbus configuration for %s%d "
4531 "bus %d, cannot wire down. The kernel "
4532 "config entry for scbus%d should "
4533 "specify a controller bus.\n"
4534 "Scbus will be assigned dynamically.\n",
4535 sim_name
, sim_unit
, sim_bus
, dunit
);
4540 if (pathid
== CAM_XPT_PATH_ID
)
4541 pathid
= xptnextfreepathid();
4546 xpt_async(u_int32_t async_code
, struct cam_path
*path
, void *async_arg
)
4549 struct cam_et
*target
, *next_target
;
4550 struct cam_ed
*device
, *next_device
;
4552 sim_lock_assert_owned(path
->bus
->sim
->lock
);
4554 CAM_DEBUG(path
, CAM_DEBUG_TRACE
, ("xpt_async\n"));
4557 * Most async events come from a CAM interrupt context. In
4558 * a few cases, the error recovery code at the peripheral layer,
4559 * which may run from our SWI or a process context, may signal
4560 * deferred events with a call to xpt_async.
4565 if (async_code
== AC_BUS_RESET
) {
4566 /* Update our notion of when the last reset occurred */
4567 microuptime(&bus
->last_reset
);
4570 for (target
= TAILQ_FIRST(&bus
->et_entries
);
4572 target
= next_target
) {
4574 next_target
= TAILQ_NEXT(target
, links
);
4576 if (path
->target
!= target
4577 && path
->target
->target_id
!= CAM_TARGET_WILDCARD
4578 && target
->target_id
!= CAM_TARGET_WILDCARD
)
4581 if (async_code
== AC_SENT_BDR
) {
4582 /* Update our notion of when the last reset occurred */
4583 microuptime(&path
->target
->last_reset
);
4586 for (device
= TAILQ_FIRST(&target
->ed_entries
);
4588 device
= next_device
) {
4590 next_device
= TAILQ_NEXT(device
, links
);
4592 if (path
->device
!= device
4593 && path
->device
->lun_id
!= CAM_LUN_WILDCARD
4594 && device
->lun_id
!= CAM_LUN_WILDCARD
)
4597 xpt_dev_async(async_code
, bus
, target
,
4600 xpt_async_bcast(&device
->asyncs
, async_code
,
4606 * If this wasn't a fully wildcarded async, tell all
4607 * clients that want all async events.
4609 if (bus
!= xpt_periph
->path
->bus
)
4610 xpt_async_bcast(&xpt_periph
->path
->device
->asyncs
, async_code
,
4615 xpt_async_bcast(struct async_list
*async_head
,
4616 u_int32_t async_code
,
4617 struct cam_path
*path
, void *async_arg
)
4619 struct async_node
*cur_entry
;
4621 cur_entry
= SLIST_FIRST(async_head
);
4622 while (cur_entry
!= NULL
) {
4623 struct async_node
*next_entry
;
4625 * Grab the next list entry before we call the current
4626 * entry's callback. This is because the callback function
4627 * can delete its async callback entry.
4629 next_entry
= SLIST_NEXT(cur_entry
, links
);
4630 if ((cur_entry
->event_enable
& async_code
) != 0)
4631 cur_entry
->callback(cur_entry
->callback_arg
,
4634 cur_entry
= next_entry
;
4639 * Handle any per-device event notifications that require action by the XPT.
4642 xpt_dev_async(u_int32_t async_code
, struct cam_eb
*bus
, struct cam_et
*target
,
4643 struct cam_ed
*device
, void *async_arg
)
4646 struct cam_path newpath
;
4649 * We only need to handle events for real devices.
4651 if (target
->target_id
== CAM_TARGET_WILDCARD
4652 || device
->lun_id
== CAM_LUN_WILDCARD
)
4656 * We need our own path with wildcards expanded to
4657 * handle certain types of events.
4659 if ((async_code
== AC_SENT_BDR
)
4660 || (async_code
== AC_BUS_RESET
)
4661 || (async_code
== AC_INQ_CHANGED
))
4662 status
= xpt_compile_path(&newpath
, NULL
,
4667 status
= CAM_REQ_CMP_ERR
;
4669 if (status
== CAM_REQ_CMP
) {
4672 * Allow transfer negotiation to occur in a
4673 * tag free environment.
4675 if (async_code
== AC_SENT_BDR
4676 || async_code
== AC_BUS_RESET
)
4677 xpt_toggle_tags(&newpath
);
4679 if (async_code
== AC_INQ_CHANGED
) {
4681 * We've sent a start unit command, or
4682 * something similar to a device that
4683 * may have caused its inquiry data to
4684 * change. So we re-scan the device to
4685 * refresh the inquiry data for it.
4687 xpt_scan_lun(newpath
.periph
, &newpath
,
4688 CAM_EXPECT_INQ_CHANGE
, NULL
);
4690 xpt_release_path(&newpath
);
4691 } else if (async_code
== AC_LOST_DEVICE
) {
4693 * When we lose a device the device may be about to detach
4694 * the sim, we have to clear out all pending timeouts and
4695 * requests before that happens. XXX it would be nice if
4696 * we could abort the requests pertaining to the device.
4698 xpt_release_devq_timeout(device
);
4699 if ((device
->flags
& CAM_DEV_UNCONFIGURED
) == 0) {
4700 device
->flags
|= CAM_DEV_UNCONFIGURED
;
4701 xpt_release_device(bus
, target
, device
);
4703 } else if (async_code
== AC_TRANSFER_NEG
) {
4704 struct ccb_trans_settings
*settings
;
4706 settings
= (struct ccb_trans_settings
*)async_arg
;
4707 xpt_set_transfer_settings(settings
, device
,
4708 /*async_update*/TRUE
);
4713 xpt_freeze_devq(struct cam_path
*path
, u_int count
)
4715 struct ccb_hdr
*ccbh
;
4717 sim_lock_assert_owned(path
->bus
->sim
->lock
);
4719 path
->device
->qfrozen_cnt
+= count
;
4722 * Mark the last CCB in the queue as needing
4723 * to be requeued if the driver hasn't
4724 * changed it's state yet. This fixes a race
4725 * where a ccb is just about to be queued to
4726 * a controller driver when it's interrupt routine
4727 * freezes the queue. To completly close the
4728 * hole, controller drives must check to see
4729 * if a ccb's status is still CAM_REQ_INPROG
4730 * just before they queue
4731 * the CCB. See ahc_action/ahc_freeze_devq for
4734 ccbh
= TAILQ_LAST(&path
->device
->ccbq
.active_ccbs
, ccb_hdr_tailq
);
4735 if (ccbh
&& ccbh
->status
== CAM_REQ_INPROG
)
4736 ccbh
->status
= CAM_REQUEUE_REQ
;
4737 return (path
->device
->qfrozen_cnt
);
4741 xpt_freeze_simq(struct cam_sim
*sim
, u_int count
)
4743 sim_lock_assert_owned(sim
->lock
);
4745 if (sim
->devq
== NULL
)
4747 sim
->devq
->send_queue
.qfrozen_cnt
+= count
;
4748 if (sim
->devq
->active_dev
!= NULL
) {
4749 struct ccb_hdr
*ccbh
;
4751 ccbh
= TAILQ_LAST(&sim
->devq
->active_dev
->ccbq
.active_ccbs
,
4753 if (ccbh
&& ccbh
->status
== CAM_REQ_INPROG
)
4754 ccbh
->status
= CAM_REQUEUE_REQ
;
4756 return (sim
->devq
->send_queue
.qfrozen_cnt
);
4760 * WARNING: most devices, especially USB/UMASS, may detach their sim early.
4761 * We ref-count the sim (and the bus only NULLs it out when the bus has been
4762 * freed, which is not the case here), but the device queue is also freed XXX
4763 * and we have to check that here.
4765 * XXX fixme: could we simply not null-out the device queue via
4769 xpt_release_devq_timeout(void *arg
)
4771 struct cam_ed
*device
;
4773 device
= (struct cam_ed
*)arg
;
4775 xpt_release_devq_device(device
, /*count*/1, /*run_queue*/TRUE
);
4779 xpt_release_devq(struct cam_path
*path
, u_int count
, int run_queue
)
4781 sim_lock_assert_owned(path
->bus
->sim
->lock
);
4783 xpt_release_devq_device(path
->device
, count
, run_queue
);
4787 xpt_release_devq_device(struct cam_ed
*dev
, u_int count
, int run_queue
)
4793 if (dev
->qfrozen_cnt
> 0) {
4795 count
= (count
> dev
->qfrozen_cnt
) ? dev
->qfrozen_cnt
: count
;
4796 dev
->qfrozen_cnt
-= count
;
4797 if (dev
->qfrozen_cnt
== 0) {
4800 * No longer need to wait for a successful
4801 * command completion.
4803 dev
->flags
&= ~CAM_DEV_REL_ON_COMPLETE
;
4806 * Remove any timeouts that might be scheduled
4807 * to release this queue.
4809 if ((dev
->flags
& CAM_DEV_REL_TIMEOUT_PENDING
) != 0) {
4810 callout_stop(&dev
->callout
);
4811 dev
->flags
&= ~CAM_DEV_REL_TIMEOUT_PENDING
;
4815 * Now that we are unfrozen schedule the
4816 * device so any pending transactions are
4819 if ((dev
->ccbq
.queue
.entries
> 0)
4820 && (xpt_schedule_dev_sendq(dev
->target
->bus
, dev
))
4821 && (run_queue
!= 0)) {
4827 xpt_run_dev_sendq(dev
->target
->bus
);
4831 xpt_release_simq(struct cam_sim
*sim
, int run_queue
)
4835 sim_lock_assert_owned(sim
->lock
);
4837 if (sim
->devq
== NULL
)
4840 sendq
= &(sim
->devq
->send_queue
);
4841 if (sendq
->qfrozen_cnt
> 0) {
4842 sendq
->qfrozen_cnt
--;
4843 if (sendq
->qfrozen_cnt
== 0) {
4847 * If there is a timeout scheduled to release this
4848 * sim queue, remove it. The queue frozen count is
4851 if ((sim
->flags
& CAM_SIM_REL_TIMEOUT_PENDING
) != 0){
4852 callout_stop(&sim
->callout
);
4853 sim
->flags
&= ~CAM_SIM_REL_TIMEOUT_PENDING
;
4855 bus
= xpt_find_bus(sim
->path_id
);
4859 * Now that we are unfrozen run the send queue.
4861 xpt_run_dev_sendq(bus
);
4863 xpt_release_bus(bus
);
4869 xpt_done(union ccb
*done_ccb
)
4871 struct cam_sim
*sim
;
4873 CAM_DEBUG(done_ccb
->ccb_h
.path
, CAM_DEBUG_TRACE
, ("xpt_done\n"));
4874 if ((done_ccb
->ccb_h
.func_code
& XPT_FC_QUEUED
) != 0) {
4876 * Queue up the request for handling by our SWI handler
4877 * any of the "non-immediate" type of ccbs.
4879 sim
= done_ccb
->ccb_h
.path
->bus
->sim
;
4880 switch (done_ccb
->ccb_h
.path
->periph
->type
) {
4881 case CAM_PERIPH_BIO
:
4882 spin_lock_wr(&sim
->sim_spin
);
4883 TAILQ_INSERT_TAIL(&sim
->sim_doneq
, &done_ccb
->ccb_h
,
4885 done_ccb
->ccb_h
.pinfo
.index
= CAM_DONEQ_INDEX
;
4886 spin_unlock_wr(&sim
->sim_spin
);
4887 if ((sim
->flags
& CAM_SIM_ON_DONEQ
) == 0) {
4888 spin_lock_wr(&cam_simq_spin
);
4889 if ((sim
->flags
& CAM_SIM_ON_DONEQ
) == 0) {
4890 TAILQ_INSERT_TAIL(&cam_simq
, sim
,
4892 sim
->flags
|= CAM_SIM_ON_DONEQ
;
4894 spin_unlock_wr(&cam_simq_spin
);
4896 if ((done_ccb
->ccb_h
.flags
& CAM_POLLED
) == 0)
4900 panic("unknown periph type %d",
4901 done_ccb
->ccb_h
.path
->periph
->type
);
4911 new_ccb
= kmalloc(sizeof(*new_ccb
), M_CAMXPT
, M_INTWAIT
| M_ZERO
);
4916 xpt_free_ccb(union ccb
*free_ccb
)
4918 kfree(free_ccb
, M_CAMXPT
);
4923 /* Private XPT functions */
4926 * Get a CAM control block for the caller. Charge the structure to the device
4927 * referenced by the path. If the this device has no 'credits' then the
4928 * device already has the maximum number of outstanding operations under way
4929 * and we return NULL. If we don't have sufficient resources to allocate more
4930 * ccbs, we also return NULL.
4933 xpt_get_ccb(struct cam_ed
*device
)
4936 struct cam_sim
*sim
;
4939 if ((new_ccb
= (union ccb
*)SLIST_FIRST(&sim
->ccb_freeq
)) == NULL
) {
4940 new_ccb
= xpt_alloc_ccb();
4941 if ((sim
->flags
& CAM_SIM_MPSAFE
) == 0)
4942 callout_init(&new_ccb
->ccb_h
.timeout_ch
);
4943 SLIST_INSERT_HEAD(&sim
->ccb_freeq
, &new_ccb
->ccb_h
,
4947 cam_ccbq_take_opening(&device
->ccbq
);
4948 SLIST_REMOVE_HEAD(&sim
->ccb_freeq
, xpt_links
.sle
);
4953 xpt_release_bus(struct cam_eb
*bus
)
4956 if ((--bus
->refcount
== 0)
4957 && (TAILQ_FIRST(&bus
->et_entries
) == NULL
)) {
4958 lockmgr(&xsoftc
.xpt_topo_lock
, LK_EXCLUSIVE
);
4959 TAILQ_REMOVE(&xsoftc
.xpt_busses
, bus
, links
);
4960 xsoftc
.bus_generation
++;
4961 lockmgr(&xsoftc
.xpt_topo_lock
, LK_RELEASE
);
4962 kfree(bus
, M_CAMXPT
);
4966 static struct cam_et
*
4967 xpt_alloc_target(struct cam_eb
*bus
, target_id_t target_id
)
4969 struct cam_et
*target
;
4970 struct cam_et
*cur_target
;
4972 target
= kmalloc(sizeof(*target
), M_CAMXPT
, M_INTWAIT
);
4974 TAILQ_INIT(&target
->ed_entries
);
4976 target
->target_id
= target_id
;
4977 target
->refcount
= 1;
4978 target
->generation
= 0;
4979 timevalclear(&target
->last_reset
);
4981 * Hold a reference to our parent bus so it
4982 * will not go away before we do.
4986 /* Insertion sort into our bus's target list */
4987 cur_target
= TAILQ_FIRST(&bus
->et_entries
);
4988 while (cur_target
!= NULL
&& cur_target
->target_id
< target_id
)
4989 cur_target
= TAILQ_NEXT(cur_target
, links
);
4991 if (cur_target
!= NULL
) {
4992 TAILQ_INSERT_BEFORE(cur_target
, target
, links
);
4994 TAILQ_INSERT_TAIL(&bus
->et_entries
, target
, links
);
5001 xpt_release_target(struct cam_eb
*bus
, struct cam_et
*target
)
5003 if (target
->refcount
== 1) {
5004 KKASSERT(TAILQ_FIRST(&target
->ed_entries
) == NULL
);
5005 TAILQ_REMOVE(&bus
->et_entries
, target
, links
);
5007 xpt_release_bus(bus
);
5008 KKASSERT(target
->refcount
== 1);
5009 kfree(target
, M_CAMXPT
);
5015 static struct cam_ed
*
5016 xpt_alloc_device(struct cam_eb
*bus
, struct cam_et
*target
, lun_id_t lun_id
)
5018 struct cam_path path
;
5019 struct cam_ed
*device
;
5020 struct cam_devq
*devq
;
5024 * Disallow new devices while trying to deregister a sim
5026 if (bus
->sim
->flags
& CAM_SIM_DEREGISTERED
)
5030 * Make space for us in the device queue on our bus
5032 devq
= bus
->sim
->devq
;
5035 status
= cam_devq_resize(devq
, devq
->alloc_queue
.array_size
+ 1);
5037 if (status
!= CAM_REQ_CMP
) {
5040 device
= kmalloc(sizeof(*device
), M_CAMXPT
, M_INTWAIT
);
5043 if (device
!= NULL
) {
5044 struct cam_ed
*cur_device
;
5046 cam_init_pinfo(&device
->alloc_ccb_entry
.pinfo
);
5047 device
->alloc_ccb_entry
.device
= device
;
5048 cam_init_pinfo(&device
->send_ccb_entry
.pinfo
);
5049 device
->send_ccb_entry
.device
= device
;
5050 device
->target
= target
;
5051 device
->lun_id
= lun_id
;
5052 device
->sim
= bus
->sim
;
5053 /* Initialize our queues */
5054 if (camq_init(&device
->drvq
, 0) != 0) {
5055 kfree(device
, M_CAMXPT
);
5058 if (cam_ccbq_init(&device
->ccbq
,
5059 bus
->sim
->max_dev_openings
) != 0) {
5060 camq_fini(&device
->drvq
);
5061 kfree(device
, M_CAMXPT
);
5064 SLIST_INIT(&device
->asyncs
);
5065 SLIST_INIT(&device
->periphs
);
5066 device
->generation
= 0;
5067 device
->owner
= NULL
;
5069 * Take the default quirk entry until we have inquiry
5070 * data and can determine a better quirk to use.
5072 device
->quirk
= &xpt_quirk_table
[xpt_quirk_table_size
- 1];
5073 bzero(&device
->inq_data
, sizeof(device
->inq_data
));
5074 device
->inq_flags
= 0;
5075 device
->queue_flags
= 0;
5076 device
->serial_num
= NULL
;
5077 device
->serial_num_len
= 0;
5078 device
->qfrozen_cnt
= 0;
5079 device
->flags
= CAM_DEV_UNCONFIGURED
;
5080 device
->tag_delay_count
= 0;
5081 device
->tag_saved_openings
= 0;
5082 device
->refcount
= 1;
5083 callout_init(&device
->callout
);
5086 * Hold a reference to our parent target so it
5087 * will not go away before we do.
5092 * XXX should be limited by number of CCBs this bus can
5095 bus
->sim
->max_ccbs
+= device
->ccbq
.devq_openings
;
5096 /* Insertion sort into our target's device list */
5097 cur_device
= TAILQ_FIRST(&target
->ed_entries
);
5098 while (cur_device
!= NULL
&& cur_device
->lun_id
< lun_id
)
5099 cur_device
= TAILQ_NEXT(cur_device
, links
);
5100 if (cur_device
!= NULL
) {
5101 TAILQ_INSERT_BEFORE(cur_device
, device
, links
);
5103 TAILQ_INSERT_TAIL(&target
->ed_entries
, device
, links
);
5105 target
->generation
++;
5106 if (lun_id
!= CAM_LUN_WILDCARD
) {
5107 xpt_compile_path(&path
,
5112 xpt_devise_transport(&path
);
5113 xpt_release_path(&path
);
5120 xpt_reference_device(struct cam_ed
*device
)
5126 xpt_release_device(struct cam_eb
*bus
, struct cam_et
*target
,
5127 struct cam_ed
*device
)
5129 struct cam_devq
*devq
;
5131 if (device
->refcount
== 1) {
5132 KKASSERT(device
->flags
& CAM_DEV_UNCONFIGURED
);
5134 if (device
->alloc_ccb_entry
.pinfo
.index
!= CAM_UNQUEUED_INDEX
5135 || device
->send_ccb_entry
.pinfo
.index
!= CAM_UNQUEUED_INDEX
)
5136 panic("Removing device while still queued for ccbs");
5138 if ((device
->flags
& CAM_DEV_REL_TIMEOUT_PENDING
) != 0) {
5139 device
->flags
&= ~CAM_DEV_REL_TIMEOUT_PENDING
;
5140 callout_stop(&device
->callout
);
5143 TAILQ_REMOVE(&target
->ed_entries
, device
,links
);
5144 target
->generation
++;
5145 bus
->sim
->max_ccbs
-= device
->ccbq
.devq_openings
;
5146 if ((devq
= bus
->sim
->devq
) != NULL
) {
5147 /* Release our slot in the devq */
5148 cam_devq_resize(devq
, devq
->alloc_queue
.array_size
- 1);
5150 camq_fini(&device
->drvq
);
5151 camq_fini(&device
->ccbq
.queue
);
5152 xpt_release_target(bus
, target
);
5153 KKASSERT(device
->refcount
== 1);
5154 kfree(device
, M_CAMXPT
);
5161 xpt_dev_ccbq_resize(struct cam_path
*path
, int newopenings
)
5169 diff
= newopenings
- (dev
->ccbq
.dev_active
+ dev
->ccbq
.dev_openings
);
5170 result
= cam_ccbq_resize(&dev
->ccbq
, newopenings
);
5171 if (result
== CAM_REQ_CMP
&& (diff
< 0)) {
5172 dev
->flags
|= CAM_DEV_RESIZE_QUEUE_NEEDED
;
5174 if ((dev
->flags
& CAM_DEV_TAG_AFTER_COUNT
) != 0
5175 || (dev
->inq_flags
& SID_CmdQue
) != 0)
5176 dev
->tag_saved_openings
= newopenings
;
5177 /* Adjust the global limit */
5178 dev
->sim
->max_ccbs
+= diff
;
5182 static struct cam_eb
*
5183 xpt_find_bus(path_id_t path_id
)
5187 lockmgr(&xsoftc
.xpt_topo_lock
, LK_EXCLUSIVE
);
5188 TAILQ_FOREACH(bus
, &xsoftc
.xpt_busses
, links
) {
5189 if (bus
->path_id
== path_id
) {
5194 lockmgr(&xsoftc
.xpt_topo_lock
, LK_RELEASE
);
5198 static struct cam_et
*
5199 xpt_find_target(struct cam_eb
*bus
, target_id_t target_id
)
5201 struct cam_et
*target
;
5203 TAILQ_FOREACH(target
, &bus
->et_entries
, links
) {
5204 if (target
->target_id
== target_id
) {
5212 static struct cam_ed
*
5213 xpt_find_device(struct cam_et
*target
, lun_id_t lun_id
)
5215 struct cam_ed
*device
;
5217 TAILQ_FOREACH(device
, &target
->ed_entries
, links
) {
5218 if (device
->lun_id
== lun_id
) {
5227 union ccb
*request_ccb
;
5228 struct ccb_pathinq
*cpi
;
5230 } xpt_scan_bus_info
;
5233 * To start a scan, request_ccb is an XPT_SCAN_BUS ccb.
5234 * As the scan progresses, xpt_scan_bus is used as the
5235 * callback on completion function.
5238 xpt_scan_bus(struct cam_periph
*periph
, union ccb
*request_ccb
)
5240 CAM_DEBUG(request_ccb
->ccb_h
.path
, CAM_DEBUG_TRACE
,
5241 ("xpt_scan_bus\n"));
5242 switch (request_ccb
->ccb_h
.func_code
) {
5245 xpt_scan_bus_info
*scan_info
;
5246 union ccb
*work_ccb
;
5247 struct cam_path
*path
;
5252 /* Find out the characteristics of the bus */
5253 work_ccb
= xpt_alloc_ccb();
5254 xpt_setup_ccb(&work_ccb
->ccb_h
, request_ccb
->ccb_h
.path
,
5255 request_ccb
->ccb_h
.pinfo
.priority
);
5256 work_ccb
->ccb_h
.func_code
= XPT_PATH_INQ
;
5257 xpt_action(work_ccb
);
5258 if (work_ccb
->ccb_h
.status
!= CAM_REQ_CMP
) {
5259 request_ccb
->ccb_h
.status
= work_ccb
->ccb_h
.status
;
5260 xpt_free_ccb(work_ccb
);
5261 xpt_done(request_ccb
);
5265 if ((work_ccb
->cpi
.hba_misc
& PIM_NOINITIATOR
) != 0) {
5267 * Can't scan the bus on an adapter that
5268 * cannot perform the initiator role.
5270 request_ccb
->ccb_h
.status
= CAM_REQ_CMP
;
5271 xpt_free_ccb(work_ccb
);
5272 xpt_done(request_ccb
);
5276 /* Save some state for use while we probe for devices */
5277 scan_info
= (xpt_scan_bus_info
*)
5278 kmalloc(sizeof(xpt_scan_bus_info
), M_CAMXPT
, M_INTWAIT
);
5279 scan_info
->request_ccb
= request_ccb
;
5280 scan_info
->cpi
= &work_ccb
->cpi
;
5282 /* Cache on our stack so we can work asynchronously */
5283 max_target
= scan_info
->cpi
->max_target
;
5284 initiator_id
= scan_info
->cpi
->initiator_id
;
5288 * We can scan all targets in parallel, or do it sequentially.
5290 if (scan_info
->cpi
->hba_misc
& PIM_SEQSCAN
) {
5292 scan_info
->counter
= 0;
5294 scan_info
->counter
= scan_info
->cpi
->max_target
+ 1;
5295 if (scan_info
->cpi
->initiator_id
< scan_info
->counter
) {
5296 scan_info
->counter
--;
5300 for (i
= 0; i
<= max_target
; i
++) {
5302 if (i
== initiator_id
)
5305 status
= xpt_create_path(&path
, xpt_periph
,
5306 request_ccb
->ccb_h
.path_id
,
5308 if (status
!= CAM_REQ_CMP
) {
5309 kprintf("xpt_scan_bus: xpt_create_path failed"
5310 " with status %#x, bus scan halted\n",
5312 kfree(scan_info
, M_CAMXPT
);
5313 request_ccb
->ccb_h
.status
= status
;
5314 xpt_free_ccb(work_ccb
);
5315 xpt_done(request_ccb
);
5318 work_ccb
= xpt_alloc_ccb();
5319 xpt_setup_ccb(&work_ccb
->ccb_h
, path
,
5320 request_ccb
->ccb_h
.pinfo
.priority
);
5321 work_ccb
->ccb_h
.func_code
= XPT_SCAN_LUN
;
5322 work_ccb
->ccb_h
.cbfcnp
= xpt_scan_bus
;
5323 work_ccb
->ccb_h
.ppriv_ptr0
= scan_info
;
5324 work_ccb
->crcn
.flags
= request_ccb
->crcn
.flags
;
5325 xpt_action(work_ccb
);
5332 struct cam_path
*path
;
5333 xpt_scan_bus_info
*scan_info
;
5335 target_id_t target_id
;
5338 /* Reuse the same CCB to query if a device was really found */
5339 scan_info
= (xpt_scan_bus_info
*)request_ccb
->ccb_h
.ppriv_ptr0
;
5340 xpt_setup_ccb(&request_ccb
->ccb_h
, request_ccb
->ccb_h
.path
,
5341 request_ccb
->ccb_h
.pinfo
.priority
);
5342 request_ccb
->ccb_h
.func_code
= XPT_GDEV_TYPE
;
5344 path_id
= request_ccb
->ccb_h
.path_id
;
5345 target_id
= request_ccb
->ccb_h
.target_id
;
5346 lun_id
= request_ccb
->ccb_h
.target_lun
;
5347 xpt_action(request_ccb
);
5349 if (request_ccb
->ccb_h
.status
!= CAM_REQ_CMP
) {
5350 struct cam_ed
*device
;
5351 struct cam_et
*target
;
5355 * If we already probed lun 0 successfully, or
5356 * we have additional configured luns on this
5357 * target that might have "gone away", go onto
5360 target
= request_ccb
->ccb_h
.path
->target
;
5362 * We may touch devices that we don't
5363 * hold references too, so ensure they
5364 * don't disappear out from under us.
5365 * The target above is referenced by the
5366 * path in the request ccb.
5369 device
= TAILQ_FIRST(&target
->ed_entries
);
5370 if (device
!= NULL
) {
5371 phl
= CAN_SRCH_HI_SPARSE(device
);
5372 if (device
->lun_id
== 0)
5373 device
= TAILQ_NEXT(device
, links
);
5375 if ((lun_id
!= 0) || (device
!= NULL
)) {
5376 if (lun_id
< (CAM_SCSI2_MAXLUN
-1) || phl
)
5380 struct cam_ed
*device
;
5382 device
= request_ccb
->ccb_h
.path
->device
;
5384 if ((device
->quirk
->quirks
& CAM_QUIRK_NOLUNS
) == 0) {
5385 /* Try the next lun */
5386 if (lun_id
< (CAM_SCSI2_MAXLUN
-1)
5387 || CAN_SRCH_HI_DENSE(device
))
5393 * Free the current request path- we're done with it.
5395 xpt_free_path(request_ccb
->ccb_h
.path
);
5398 * Check to see if we scan any further luns.
5400 if (lun_id
== request_ccb
->ccb_h
.target_lun
5401 || lun_id
> scan_info
->cpi
->max_lun
) {
5406 if (scan_info
->cpi
->hba_misc
& PIM_SEQSCAN
) {
5407 scan_info
->counter
++;
5408 if (scan_info
->counter
==
5409 scan_info
->cpi
->initiator_id
) {
5410 scan_info
->counter
++;
5412 if (scan_info
->counter
>=
5413 scan_info
->cpi
->max_target
+1) {
5417 scan_info
->counter
--;
5418 if (scan_info
->counter
== 0) {
5423 xpt_free_ccb(request_ccb
);
5424 xpt_free_ccb((union ccb
*)scan_info
->cpi
);
5425 request_ccb
= scan_info
->request_ccb
;
5426 kfree(scan_info
, M_CAMXPT
);
5427 request_ccb
->ccb_h
.status
= CAM_REQ_CMP
;
5428 xpt_done(request_ccb
);
5432 if ((scan_info
->cpi
->hba_misc
& PIM_SEQSCAN
) == 0) {
5435 status
= xpt_create_path(&path
, xpt_periph
,
5436 scan_info
->request_ccb
->ccb_h
.path_id
,
5437 scan_info
->counter
, 0);
5438 if (status
!= CAM_REQ_CMP
) {
5439 kprintf("xpt_scan_bus: xpt_create_path failed"
5440 " with status %#x, bus scan halted\n",
5442 xpt_free_ccb(request_ccb
);
5443 xpt_free_ccb((union ccb
*)scan_info
->cpi
);
5444 request_ccb
= scan_info
->request_ccb
;
5445 kfree(scan_info
, M_CAMXPT
);
5446 request_ccb
->ccb_h
.status
= status
;
5447 xpt_done(request_ccb
);
5450 xpt_setup_ccb(&request_ccb
->ccb_h
, path
,
5451 request_ccb
->ccb_h
.pinfo
.priority
);
5452 request_ccb
->ccb_h
.func_code
= XPT_SCAN_LUN
;
5453 request_ccb
->ccb_h
.cbfcnp
= xpt_scan_bus
;
5454 request_ccb
->ccb_h
.ppriv_ptr0
= scan_info
;
5455 request_ccb
->crcn
.flags
=
5456 scan_info
->request_ccb
->crcn
.flags
;
5458 status
= xpt_create_path(&path
, xpt_periph
,
5459 path_id
, target_id
, lun_id
);
5460 if (status
!= CAM_REQ_CMP
) {
5461 kprintf("xpt_scan_bus: xpt_create_path failed "
5462 "with status %#x, halting LUN scan\n",
5466 xpt_setup_ccb(&request_ccb
->ccb_h
, path
,
5467 request_ccb
->ccb_h
.pinfo
.priority
);
5468 request_ccb
->ccb_h
.func_code
= XPT_SCAN_LUN
;
5469 request_ccb
->ccb_h
.cbfcnp
= xpt_scan_bus
;
5470 request_ccb
->ccb_h
.ppriv_ptr0
= scan_info
;
5471 request_ccb
->crcn
.flags
=
5472 scan_info
->request_ccb
->crcn
.flags
;
5474 xpt_action(request_ccb
);
5484 PROBE_INQUIRY
, /* this counts as DV0 for Basic Domain Validation */
5489 PROBE_TUR_FOR_NEGOTIATION
,
5490 PROBE_INQUIRY_BASIC_DV1
,
5491 PROBE_INQUIRY_BASIC_DV2
,
5496 PROBE_INQUIRY_CKSUM
= 0x01,
5497 PROBE_SERIAL_CKSUM
= 0x02,
5498 PROBE_NO_ANNOUNCE
= 0x04
5502 TAILQ_HEAD(, ccb_hdr
) request_ccbs
;
5503 probe_action action
;
5504 union ccb saved_ccb
;
5507 u_int8_t digest
[16];
5511 xpt_scan_lun(struct cam_periph
*periph
, struct cam_path
*path
,
5512 cam_flags flags
, union ccb
*request_ccb
)
5514 struct ccb_pathinq cpi
;
5516 struct cam_path
*new_path
;
5517 struct cam_periph
*old_periph
;
5519 CAM_DEBUG(request_ccb
->ccb_h
.path
, CAM_DEBUG_TRACE
,
5520 ("xpt_scan_lun\n"));
5522 xpt_setup_ccb(&cpi
.ccb_h
, path
, /*priority*/1);
5523 cpi
.ccb_h
.func_code
= XPT_PATH_INQ
;
5524 xpt_action((union ccb
*)&cpi
);
5526 if (cpi
.ccb_h
.status
!= CAM_REQ_CMP
) {
5527 if (request_ccb
!= NULL
) {
5528 request_ccb
->ccb_h
.status
= cpi
.ccb_h
.status
;
5529 xpt_done(request_ccb
);
5534 if ((cpi
.hba_misc
& PIM_NOINITIATOR
) != 0) {
5536 * Can't scan the bus on an adapter that
5537 * cannot perform the initiator role.
5539 if (request_ccb
!= NULL
) {
5540 request_ccb
->ccb_h
.status
= CAM_REQ_CMP
;
5541 xpt_done(request_ccb
);
5546 if (request_ccb
== NULL
) {
5547 request_ccb
= kmalloc(sizeof(union ccb
), M_CAMXPT
, M_INTWAIT
);
5548 new_path
= kmalloc(sizeof(*new_path
), M_CAMXPT
, M_INTWAIT
);
5549 status
= xpt_compile_path(new_path
, xpt_periph
,
5551 path
->target
->target_id
,
5552 path
->device
->lun_id
);
5554 if (status
!= CAM_REQ_CMP
) {
5555 xpt_print(path
, "xpt_scan_lun: can't compile path, "
5556 "can't continue\n");
5557 kfree(request_ccb
, M_CAMXPT
);
5558 kfree(new_path
, M_CAMXPT
);
5561 xpt_setup_ccb(&request_ccb
->ccb_h
, new_path
, /*priority*/ 1);
5562 request_ccb
->ccb_h
.cbfcnp
= xptscandone
;
5563 request_ccb
->ccb_h
.func_code
= XPT_SCAN_LUN
;
5564 request_ccb
->crcn
.flags
= flags
;
5567 if ((old_periph
= cam_periph_find(path
, "probe")) != NULL
) {
5570 softc
= (probe_softc
*)old_periph
->softc
;
5571 TAILQ_INSERT_TAIL(&softc
->request_ccbs
, &request_ccb
->ccb_h
,
5574 status
= cam_periph_alloc(proberegister
, NULL
, probecleanup
,
5575 probestart
, "probe",
5577 request_ccb
->ccb_h
.path
, NULL
, 0,
5580 if (status
!= CAM_REQ_CMP
) {
5581 xpt_print(path
, "xpt_scan_lun: cam_alloc_periph "
5582 "returned an error, can't continue probe\n");
5583 request_ccb
->ccb_h
.status
= status
;
5584 xpt_done(request_ccb
);
5590 xptscandone(struct cam_periph
*periph
, union ccb
*done_ccb
)
5592 xpt_release_path(done_ccb
->ccb_h
.path
);
5593 kfree(done_ccb
->ccb_h
.path
, M_CAMXPT
);
5594 kfree(done_ccb
, M_CAMXPT
);
5598 proberegister(struct cam_periph
*periph
, void *arg
)
5600 union ccb
*request_ccb
; /* CCB representing the probe request */
5604 request_ccb
= (union ccb
*)arg
;
5605 if (periph
== NULL
) {
5606 kprintf("proberegister: periph was NULL!!\n");
5607 return(CAM_REQ_CMP_ERR
);
5610 if (request_ccb
== NULL
) {
5611 kprintf("proberegister: no probe CCB, "
5612 "can't register device\n");
5613 return(CAM_REQ_CMP_ERR
);
5616 softc
= kmalloc(sizeof(*softc
), M_CAMXPT
, M_INTWAIT
| M_ZERO
);
5617 TAILQ_INIT(&softc
->request_ccbs
);
5618 TAILQ_INSERT_TAIL(&softc
->request_ccbs
, &request_ccb
->ccb_h
,
5621 periph
->softc
= softc
;
5622 status
= cam_periph_acquire(periph
);
5623 if (status
!= CAM_REQ_CMP
) {
5629 * Ensure we've waited at least a bus settle
5630 * delay before attempting to probe the device.
5631 * For HBAs that don't do bus resets, this won't make a difference.
5633 cam_periph_freeze_after_event(periph
, &periph
->path
->bus
->last_reset
,
5635 probeschedule(periph
);
5636 return(CAM_REQ_CMP
);
5640 probeschedule(struct cam_periph
*periph
)
5642 struct ccb_pathinq cpi
;
5646 softc
= (probe_softc
*)periph
->softc
;
5647 ccb
= (union ccb
*)TAILQ_FIRST(&softc
->request_ccbs
);
5649 xpt_setup_ccb(&cpi
.ccb_h
, periph
->path
, /*priority*/1);
5650 cpi
.ccb_h
.func_code
= XPT_PATH_INQ
;
5651 xpt_action((union ccb
*)&cpi
);
5654 * If a device has gone away and another device, or the same one,
5655 * is back in the same place, it should have a unit attention
5656 * condition pending. It will not report the unit attention in
5657 * response to an inquiry, which may leave invalid transfer
5658 * negotiations in effect. The TUR will reveal the unit attention
5659 * condition. Only send the TUR for lun 0, since some devices
5660 * will get confused by commands other than inquiry to non-existent
5661 * luns. If you think a device has gone away start your scan from
5662 * lun 0. This will insure that any bogus transfer settings are
5665 * If we haven't seen the device before and the controller supports
5666 * some kind of transfer negotiation, negotiate with the first
5667 * sent command if no bus reset was performed at startup. This
5668 * ensures that the device is not confused by transfer negotiation
5669 * settings left over by loader or BIOS action.
5671 if (((ccb
->ccb_h
.path
->device
->flags
& CAM_DEV_UNCONFIGURED
) == 0)
5672 && (ccb
->ccb_h
.target_lun
== 0)) {
5673 softc
->action
= PROBE_TUR
;
5674 } else if ((cpi
.hba_inquiry
& (PI_WIDE_32
|PI_WIDE_16
|PI_SDTR_ABLE
)) != 0
5675 && (cpi
.hba_misc
& PIM_NOBUSRESET
) != 0) {
5676 proberequestdefaultnegotiation(periph
);
5677 softc
->action
= PROBE_INQUIRY
;
5679 softc
->action
= PROBE_INQUIRY
;
5682 if (ccb
->crcn
.flags
& CAM_EXPECT_INQ_CHANGE
)
5683 softc
->flags
|= PROBE_NO_ANNOUNCE
;
5685 softc
->flags
&= ~PROBE_NO_ANNOUNCE
;
5687 xpt_schedule(periph
, ccb
->ccb_h
.pinfo
.priority
);
5691 probestart(struct cam_periph
*periph
, union ccb
*start_ccb
)
5693 /* Probe the device that our peripheral driver points to */
5694 struct ccb_scsiio
*csio
;
5697 CAM_DEBUG(start_ccb
->ccb_h
.path
, CAM_DEBUG_TRACE
, ("probestart\n"));
5699 softc
= (probe_softc
*)periph
->softc
;
5700 csio
= &start_ccb
->csio
;
5702 switch (softc
->action
) {
5704 case PROBE_TUR_FOR_NEGOTIATION
:
5707 scsi_test_unit_ready(csio
,
5716 case PROBE_FULL_INQUIRY
:
5717 case PROBE_INQUIRY_BASIC_DV1
:
5718 case PROBE_INQUIRY_BASIC_DV2
:
5721 struct scsi_inquiry_data
*inq_buf
;
5723 inq_buf
= &periph
->path
->device
->inq_data
;
5726 * If the device is currently configured, we calculate an
5727 * MD5 checksum of the inquiry data, and if the serial number
5728 * length is greater than 0, add the serial number data
5729 * into the checksum as well. Once the inquiry and the
5730 * serial number check finish, we attempt to figure out
5731 * whether we still have the same device.
5733 if ((periph
->path
->device
->flags
& CAM_DEV_UNCONFIGURED
) == 0) {
5735 MD5Init(&softc
->context
);
5736 MD5Update(&softc
->context
, (unsigned char *)inq_buf
,
5737 sizeof(struct scsi_inquiry_data
));
5738 softc
->flags
|= PROBE_INQUIRY_CKSUM
;
5739 if (periph
->path
->device
->serial_num_len
> 0) {
5740 MD5Update(&softc
->context
,
5741 periph
->path
->device
->serial_num
,
5742 periph
->path
->device
->serial_num_len
);
5743 softc
->flags
|= PROBE_SERIAL_CKSUM
;
5745 MD5Final(softc
->digest
, &softc
->context
);
5748 if (softc
->action
== PROBE_INQUIRY
)
5749 inquiry_len
= SHORT_INQUIRY_LENGTH
;
5751 inquiry_len
= SID_ADDITIONAL_LENGTH(inq_buf
);
5754 * Some parallel SCSI devices fail to send an
5755 * ignore wide residue message when dealing with
5756 * odd length inquiry requests. Round up to be
5759 inquiry_len
= roundup2(inquiry_len
, 2);
5761 if (softc
->action
== PROBE_INQUIRY_BASIC_DV1
5762 || softc
->action
== PROBE_INQUIRY_BASIC_DV2
) {
5763 inq_buf
= kmalloc(inquiry_len
, M_CAMXPT
, M_INTWAIT
);
5769 (u_int8_t
*)inq_buf
,
5774 /*timeout*/60 * 1000);
5777 case PROBE_MODE_SENSE
:
5782 mode_buf_len
= sizeof(struct scsi_mode_header_6
)
5783 + sizeof(struct scsi_mode_blk_desc
)
5784 + sizeof(struct scsi_control_page
);
5785 mode_buf
= kmalloc(mode_buf_len
, M_CAMXPT
, M_INTWAIT
);
5786 scsi_mode_sense(csio
,
5791 SMS_PAGE_CTRL_CURRENT
,
5792 SMS_CONTROL_MODE_PAGE
,
5799 case PROBE_SERIAL_NUM_0
:
5801 struct scsi_vpd_supported_page_list
*vpd_list
= NULL
;
5802 struct cam_ed
*device
;
5804 device
= periph
->path
->device
;
5805 if ((device
->quirk
->quirks
& CAM_QUIRK_NOSERIAL
) == 0) {
5806 vpd_list
= kmalloc(sizeof(*vpd_list
), M_CAMXPT
,
5807 M_INTWAIT
| M_ZERO
);
5810 if (vpd_list
!= NULL
) {
5815 (u_int8_t
*)vpd_list
,
5818 SVPD_SUPPORTED_PAGE_LIST
,
5820 /*timeout*/60 * 1000);
5824 * We'll have to do without, let our probedone
5825 * routine finish up for us.
5827 start_ccb
->csio
.data_ptr
= NULL
;
5828 probedone(periph
, start_ccb
);
5831 case PROBE_SERIAL_NUM_1
:
5833 struct scsi_vpd_unit_serial_number
*serial_buf
;
5834 struct cam_ed
* device
;
5837 device
= periph
->path
->device
;
5838 device
->serial_num
= NULL
;
5839 device
->serial_num_len
= 0;
5841 serial_buf
= (struct scsi_vpd_unit_serial_number
*)
5842 kmalloc(sizeof(*serial_buf
), M_CAMXPT
,
5843 M_INTWAIT
| M_ZERO
);
5848 (u_int8_t
*)serial_buf
,
5849 sizeof(*serial_buf
),
5851 SVPD_UNIT_SERIAL_NUMBER
,
5853 /*timeout*/60 * 1000);
5857 xpt_action(start_ccb
);
5861 proberequestdefaultnegotiation(struct cam_periph
*periph
)
5863 struct ccb_trans_settings cts
;
5865 xpt_setup_ccb(&cts
.ccb_h
, periph
->path
, /*priority*/1);
5866 cts
.ccb_h
.func_code
= XPT_GET_TRAN_SETTINGS
;
5867 cts
.type
= CTS_TYPE_USER_SETTINGS
;
5868 xpt_action((union ccb
*)&cts
);
5869 if ((cts
.ccb_h
.status
& CAM_STATUS_MASK
) != CAM_REQ_CMP
) {
5872 cts
.ccb_h
.func_code
= XPT_SET_TRAN_SETTINGS
;
5873 cts
.type
= CTS_TYPE_CURRENT_SETTINGS
;
5874 xpt_action((union ccb
*)&cts
);
5878 * Backoff Negotiation Code- only pertinent for SPI devices.
5881 proberequestbackoff(struct cam_periph
*periph
, struct cam_ed
*device
)
5883 struct ccb_trans_settings cts
;
5884 struct ccb_trans_settings_spi
*spi
;
5886 memset(&cts
, 0, sizeof (cts
));
5887 xpt_setup_ccb(&cts
.ccb_h
, periph
->path
, /*priority*/1);
5888 cts
.ccb_h
.func_code
= XPT_GET_TRAN_SETTINGS
;
5889 cts
.type
= CTS_TYPE_CURRENT_SETTINGS
;
5890 xpt_action((union ccb
*)&cts
);
5891 if ((cts
.ccb_h
.status
& CAM_STATUS_MASK
) != CAM_REQ_CMP
) {
5893 xpt_print(periph
->path
,
5894 "failed to get current device settings\n");
5898 if (cts
.transport
!= XPORT_SPI
) {
5900 xpt_print(periph
->path
, "not SPI transport\n");
5904 spi
= &cts
.xport_specific
.spi
;
5907 * We cannot renegotiate sync rate if we don't have one.
5909 if ((spi
->valid
& CTS_SPI_VALID_SYNC_RATE
) == 0) {
5911 xpt_print(periph
->path
, "no sync rate known\n");
5917 * We'll assert that we don't have to touch PPR options- the
5918 * SIM will see what we do with period and offset and adjust
5919 * the PPR options as appropriate.
5923 * A sync rate with unknown or zero offset is nonsensical.
5924 * A sync period of zero means Async.
5926 if ((spi
->valid
& CTS_SPI_VALID_SYNC_OFFSET
) == 0
5927 || spi
->sync_offset
== 0 || spi
->sync_period
== 0) {
5929 xpt_print(periph
->path
, "no sync rate available\n");
5934 if (device
->flags
& CAM_DEV_DV_HIT_BOTTOM
) {
5935 CAM_DEBUG(periph
->path
, CAM_DEBUG_INFO
,
5936 ("hit async: giving up on DV\n"));
5942 * Jump sync_period up by one, but stop at 5MHz and fall back to Async.
5943 * We don't try to remember 'last' settings to see if the SIM actually
5944 * gets into the speed we want to set. We check on the SIM telling
5945 * us that a requested speed is bad, but otherwise don't try and
5946 * check the speed due to the asynchronous and handshake nature
5949 spi
->valid
= CTS_SPI_VALID_SYNC_RATE
| CTS_SPI_VALID_SYNC_OFFSET
;
5952 if (spi
->sync_period
>= 0xf) {
5953 spi
->sync_period
= 0;
5954 spi
->sync_offset
= 0;
5955 CAM_DEBUG(periph
->path
, CAM_DEBUG_INFO
,
5956 ("setting to async for DV\n"));
5958 * Once we hit async, we don't want to try
5959 * any more settings.
5961 device
->flags
|= CAM_DEV_DV_HIT_BOTTOM
;
5962 } else if (bootverbose
) {
5963 CAM_DEBUG(periph
->path
, CAM_DEBUG_INFO
,
5964 ("DV: period 0x%x\n", spi
->sync_period
));
5965 kprintf("setting period to 0x%x\n", spi
->sync_period
);
5967 cts
.ccb_h
.func_code
= XPT_SET_TRAN_SETTINGS
;
5968 cts
.type
= CTS_TYPE_CURRENT_SETTINGS
;
5969 xpt_action((union ccb
*)&cts
);
5970 if ((cts
.ccb_h
.status
& CAM_STATUS_MASK
) == CAM_REQ_CMP
) {
5973 CAM_DEBUG(periph
->path
, CAM_DEBUG_INFO
,
5974 ("DV: failed to set period 0x%x\n", spi
->sync_period
));
5975 if (spi
->sync_period
== 0) {
5983 probedone(struct cam_periph
*periph
, union ccb
*done_ccb
)
5986 struct cam_path
*path
;
5989 CAM_DEBUG(done_ccb
->ccb_h
.path
, CAM_DEBUG_TRACE
, ("probedone\n"));
5991 softc
= (probe_softc
*)periph
->softc
;
5992 path
= done_ccb
->ccb_h
.path
;
5993 priority
= done_ccb
->ccb_h
.pinfo
.priority
;
5995 switch (softc
->action
) {
5998 if ((done_ccb
->ccb_h
.status
& CAM_STATUS_MASK
) != CAM_REQ_CMP
) {
6000 if (cam_periph_error(done_ccb
, 0,
6001 SF_NO_PRINT
, NULL
) == ERESTART
)
6003 else if ((done_ccb
->ccb_h
.status
& CAM_DEV_QFRZN
) != 0)
6004 /* Don't wedge the queue */
6005 xpt_release_devq(done_ccb
->ccb_h
.path
,
6009 softc
->action
= PROBE_INQUIRY
;
6010 xpt_release_ccb(done_ccb
);
6011 xpt_schedule(periph
, priority
);
6015 case PROBE_FULL_INQUIRY
:
6017 if ((done_ccb
->ccb_h
.status
& CAM_STATUS_MASK
) == CAM_REQ_CMP
) {
6018 struct scsi_inquiry_data
*inq_buf
;
6019 u_int8_t periph_qual
;
6021 path
->device
->flags
|= CAM_DEV_INQUIRY_DATA_VALID
;
6022 inq_buf
= &path
->device
->inq_data
;
6024 periph_qual
= SID_QUAL(inq_buf
);
6026 switch(periph_qual
) {
6027 case SID_QUAL_LU_CONNECTED
:
6032 * We conservatively request only
6033 * SHORT_INQUIRY_LEN bytes of inquiry
6034 * information during our first try
6035 * at sending an INQUIRY. If the device
6036 * has more information to give,
6037 * perform a second request specifying
6038 * the amount of information the device
6039 * is willing to give.
6041 len
= inq_buf
->additional_length
6042 + offsetof(struct scsi_inquiry_data
,
6043 additional_length
) + 1;
6044 if (softc
->action
== PROBE_INQUIRY
6045 && len
> SHORT_INQUIRY_LENGTH
) {
6046 softc
->action
= PROBE_FULL_INQUIRY
;
6047 xpt_release_ccb(done_ccb
);
6048 xpt_schedule(periph
, priority
);
6052 xpt_find_quirk(path
->device
);
6054 xpt_devise_transport(path
);
6055 if (INQ_DATA_TQ_ENABLED(inq_buf
))
6056 softc
->action
= PROBE_MODE_SENSE
;
6058 softc
->action
= PROBE_SERIAL_NUM_0
;
6060 path
->device
->flags
&= ~CAM_DEV_UNCONFIGURED
;
6061 xpt_reference_device(path
->device
);
6063 xpt_release_ccb(done_ccb
);
6064 xpt_schedule(periph
, priority
);
6070 } else if (cam_periph_error(done_ccb
, 0,
6071 done_ccb
->ccb_h
.target_lun
> 0
6072 ? SF_RETRY_UA
|SF_QUIET_IR
6074 &softc
->saved_ccb
) == ERESTART
) {
6076 } else if ((done_ccb
->ccb_h
.status
& CAM_DEV_QFRZN
) != 0) {
6077 /* Don't wedge the queue */
6078 xpt_release_devq(done_ccb
->ccb_h
.path
, /*count*/1,
6082 * If we get to this point, we got an error status back
6083 * from the inquiry and the error status doesn't require
6084 * automatically retrying the command. Therefore, the
6085 * inquiry failed. If we had inquiry information before
6086 * for this device, but this latest inquiry command failed,
6087 * the device has probably gone away. If this device isn't
6088 * already marked unconfigured, notify the peripheral
6089 * drivers that this device is no more.
6091 if ((path
->device
->flags
& CAM_DEV_UNCONFIGURED
) == 0) {
6092 /* Send the async notification. */
6093 xpt_async(AC_LOST_DEVICE
, path
, NULL
);
6096 xpt_release_ccb(done_ccb
);
6099 case PROBE_MODE_SENSE
:
6101 struct ccb_scsiio
*csio
;
6102 struct scsi_mode_header_6
*mode_hdr
;
6104 csio
= &done_ccb
->csio
;
6105 mode_hdr
= (struct scsi_mode_header_6
*)csio
->data_ptr
;
6106 if ((csio
->ccb_h
.status
& CAM_STATUS_MASK
) == CAM_REQ_CMP
) {
6107 struct scsi_control_page
*page
;
6110 offset
= ((u_int8_t
*)&mode_hdr
[1])
6111 + mode_hdr
->blk_desc_len
;
6112 page
= (struct scsi_control_page
*)offset
;
6113 path
->device
->queue_flags
= page
->queue_flags
;
6114 } else if (cam_periph_error(done_ccb
, 0,
6115 SF_RETRY_UA
|SF_NO_PRINT
,
6116 &softc
->saved_ccb
) == ERESTART
) {
6118 } else if ((done_ccb
->ccb_h
.status
& CAM_DEV_QFRZN
) != 0) {
6119 /* Don't wedge the queue */
6120 xpt_release_devq(done_ccb
->ccb_h
.path
,
6121 /*count*/1, /*run_queue*/TRUE
);
6123 xpt_release_ccb(done_ccb
);
6124 kfree(mode_hdr
, M_CAMXPT
);
6125 softc
->action
= PROBE_SERIAL_NUM_0
;
6126 xpt_schedule(periph
, priority
);
6129 case PROBE_SERIAL_NUM_0
:
6131 struct ccb_scsiio
*csio
;
6132 struct scsi_vpd_supported_page_list
*page_list
;
6133 int length
, serialnum_supported
, i
;
6135 serialnum_supported
= 0;
6136 csio
= &done_ccb
->csio
;
6138 (struct scsi_vpd_supported_page_list
*)csio
->data_ptr
;
6140 if (page_list
== NULL
) {
6142 * Don't process the command as it was never sent
6144 } else if ((csio
->ccb_h
.status
& CAM_STATUS_MASK
) == CAM_REQ_CMP
6145 && (page_list
->length
> 0)) {
6146 length
= min(page_list
->length
,
6147 SVPD_SUPPORTED_PAGES_SIZE
);
6148 for (i
= 0; i
< length
; i
++) {
6149 if (page_list
->list
[i
] ==
6150 SVPD_UNIT_SERIAL_NUMBER
) {
6151 serialnum_supported
= 1;
6155 } else if (cam_periph_error(done_ccb
, 0,
6156 SF_RETRY_UA
|SF_NO_PRINT
,
6157 &softc
->saved_ccb
) == ERESTART
) {
6159 } else if ((done_ccb
->ccb_h
.status
& CAM_DEV_QFRZN
) != 0) {
6160 /* Don't wedge the queue */
6161 xpt_release_devq(done_ccb
->ccb_h
.path
, /*count*/1,
6165 if (page_list
!= NULL
)
6166 kfree(page_list
, M_DEVBUF
);
6168 if (serialnum_supported
) {
6169 xpt_release_ccb(done_ccb
);
6170 softc
->action
= PROBE_SERIAL_NUM_1
;
6171 xpt_schedule(periph
, priority
);
6174 xpt_release_ccb(done_ccb
);
6175 softc
->action
= PROBE_TUR_FOR_NEGOTIATION
;
6176 xpt_schedule(periph
, done_ccb
->ccb_h
.pinfo
.priority
);
6180 case PROBE_SERIAL_NUM_1
:
6182 struct ccb_scsiio
*csio
;
6183 struct scsi_vpd_unit_serial_number
*serial_buf
;
6190 csio
= &done_ccb
->csio
;
6191 priority
= done_ccb
->ccb_h
.pinfo
.priority
;
6193 (struct scsi_vpd_unit_serial_number
*)csio
->data_ptr
;
6195 /* Clean up from previous instance of this device */
6196 if (path
->device
->serial_num
!= NULL
) {
6197 kfree(path
->device
->serial_num
, M_CAMXPT
);
6198 path
->device
->serial_num
= NULL
;
6199 path
->device
->serial_num_len
= 0;
6202 if (serial_buf
== NULL
) {
6204 * Don't process the command as it was never sent
6206 } else if ((csio
->ccb_h
.status
& CAM_STATUS_MASK
) == CAM_REQ_CMP
6207 && (serial_buf
->length
> 0)) {
6210 path
->device
->serial_num
=
6211 kmalloc((serial_buf
->length
+ 1),
6212 M_CAMXPT
, M_INTWAIT
);
6213 bcopy(serial_buf
->serial_num
,
6214 path
->device
->serial_num
,
6215 serial_buf
->length
);
6216 path
->device
->serial_num_len
= serial_buf
->length
;
6217 path
->device
->serial_num
[serial_buf
->length
] = '\0';
6218 } else if (cam_periph_error(done_ccb
, 0,
6219 SF_RETRY_UA
|SF_NO_PRINT
,
6220 &softc
->saved_ccb
) == ERESTART
) {
6222 } else if ((done_ccb
->ccb_h
.status
& CAM_DEV_QFRZN
) != 0) {
6223 /* Don't wedge the queue */
6224 xpt_release_devq(done_ccb
->ccb_h
.path
, /*count*/1,
6229 * Let's see if we have seen this device before.
6231 if ((softc
->flags
& PROBE_INQUIRY_CKSUM
) != 0) {
6233 u_int8_t digest
[16];
6238 (unsigned char *)&path
->device
->inq_data
,
6239 sizeof(struct scsi_inquiry_data
));
6242 MD5Update(&context
, serial_buf
->serial_num
,
6243 serial_buf
->length
);
6245 MD5Final(digest
, &context
);
6246 if (bcmp(softc
->digest
, digest
, 16) == 0)
6250 * XXX Do we need to do a TUR in order to ensure
6251 * that the device really hasn't changed???
6254 && ((softc
->flags
& PROBE_NO_ANNOUNCE
) == 0))
6255 xpt_async(AC_LOST_DEVICE
, path
, NULL
);
6257 if (serial_buf
!= NULL
)
6258 kfree(serial_buf
, M_CAMXPT
);
6262 * Now that we have all the necessary
6263 * information to safely perform transfer
6264 * negotiations... Controllers don't perform
6265 * any negotiation or tagged queuing until
6266 * after the first XPT_SET_TRAN_SETTINGS ccb is
6267 * received. So, on a new device, just retrieve
6268 * the user settings, and set them as the current
6269 * settings to set the device up.
6271 proberequestdefaultnegotiation(periph
);
6272 xpt_release_ccb(done_ccb
);
6275 * Perform a TUR to allow the controller to
6276 * perform any necessary transfer negotiation.
6278 softc
->action
= PROBE_TUR_FOR_NEGOTIATION
;
6279 xpt_schedule(periph
, priority
);
6282 xpt_release_ccb(done_ccb
);
6285 case PROBE_TUR_FOR_NEGOTIATION
:
6287 if ((done_ccb
->ccb_h
.status
& CAM_DEV_QFRZN
) != 0) {
6288 /* Don't wedge the queue */
6289 xpt_release_devq(done_ccb
->ccb_h
.path
, /*count*/1,
6293 xpt_reference_device(path
->device
);
6295 * Do Domain Validation for lun 0 on devices that claim
6296 * to support Synchronous Transfer modes.
6298 if (softc
->action
== PROBE_TUR_FOR_NEGOTIATION
6299 && done_ccb
->ccb_h
.target_lun
== 0
6300 && (path
->device
->inq_data
.flags
& SID_Sync
) != 0
6301 && (path
->device
->flags
& CAM_DEV_IN_DV
) == 0) {
6302 CAM_DEBUG(periph
->path
, CAM_DEBUG_INFO
,
6303 ("Begin Domain Validation\n"));
6304 path
->device
->flags
|= CAM_DEV_IN_DV
;
6305 xpt_release_ccb(done_ccb
);
6306 softc
->action
= PROBE_INQUIRY_BASIC_DV1
;
6307 xpt_schedule(periph
, priority
);
6310 if (softc
->action
== PROBE_DV_EXIT
) {
6311 CAM_DEBUG(periph
->path
, CAM_DEBUG_INFO
,
6312 ("Leave Domain Validation\n"));
6314 path
->device
->flags
&=
6315 ~(CAM_DEV_UNCONFIGURED
|CAM_DEV_IN_DV
|CAM_DEV_DV_HIT_BOTTOM
);
6316 if ((softc
->flags
& PROBE_NO_ANNOUNCE
) == 0) {
6317 /* Inform the XPT that a new device has been found */
6318 done_ccb
->ccb_h
.func_code
= XPT_GDEV_TYPE
;
6319 xpt_action(done_ccb
);
6320 xpt_async(AC_FOUND_DEVICE
, done_ccb
->ccb_h
.path
,
6323 xpt_release_ccb(done_ccb
);
6325 case PROBE_INQUIRY_BASIC_DV1
:
6326 case PROBE_INQUIRY_BASIC_DV2
:
6328 struct scsi_inquiry_data
*nbuf
;
6329 struct ccb_scsiio
*csio
;
6331 if ((done_ccb
->ccb_h
.status
& CAM_DEV_QFRZN
) != 0) {
6332 /* Don't wedge the queue */
6333 xpt_release_devq(done_ccb
->ccb_h
.path
, /*count*/1,
6336 csio
= &done_ccb
->csio
;
6337 nbuf
= (struct scsi_inquiry_data
*)csio
->data_ptr
;
6338 if (bcmp(nbuf
, &path
->device
->inq_data
, SHORT_INQUIRY_LENGTH
)) {
6340 "inquiry data fails comparison at DV%d step\n",
6341 softc
->action
== PROBE_INQUIRY_BASIC_DV1
? 1 : 2);
6342 if (proberequestbackoff(periph
, path
->device
)) {
6343 path
->device
->flags
&= ~CAM_DEV_IN_DV
;
6344 softc
->action
= PROBE_TUR_FOR_NEGOTIATION
;
6347 softc
->action
= PROBE_DV_EXIT
;
6349 kfree(nbuf
, M_CAMXPT
);
6350 xpt_release_ccb(done_ccb
);
6351 xpt_schedule(periph
, priority
);
6354 kfree(nbuf
, M_CAMXPT
);
6355 if (softc
->action
== PROBE_INQUIRY_BASIC_DV1
) {
6356 softc
->action
= PROBE_INQUIRY_BASIC_DV2
;
6357 xpt_release_ccb(done_ccb
);
6358 xpt_schedule(periph
, priority
);
6361 if (softc
->action
== PROBE_DV_EXIT
) {
6362 CAM_DEBUG(periph
->path
, CAM_DEBUG_INFO
,
6363 ("Leave Domain Validation Successfully\n"));
6365 path
->device
->flags
&=
6366 ~(CAM_DEV_UNCONFIGURED
|CAM_DEV_IN_DV
|CAM_DEV_DV_HIT_BOTTOM
);
6367 if ((softc
->flags
& PROBE_NO_ANNOUNCE
) == 0) {
6368 /* Inform the XPT that a new device has been found */
6369 done_ccb
->ccb_h
.func_code
= XPT_GDEV_TYPE
;
6370 xpt_action(done_ccb
);
6371 xpt_async(AC_FOUND_DEVICE
, done_ccb
->ccb_h
.path
,
6374 xpt_release_ccb(done_ccb
);
6378 done_ccb
= (union ccb
*)TAILQ_FIRST(&softc
->request_ccbs
);
6379 TAILQ_REMOVE(&softc
->request_ccbs
, &done_ccb
->ccb_h
, periph_links
.tqe
);
6380 done_ccb
->ccb_h
.status
= CAM_REQ_CMP
;
6382 if (TAILQ_FIRST(&softc
->request_ccbs
) == NULL
) {
6383 cam_periph_invalidate(periph
);
6384 cam_periph_release(periph
);
6386 probeschedule(periph
);
6391 probecleanup(struct cam_periph
*periph
)
6393 kfree(periph
->softc
, M_CAMXPT
);
6397 xpt_find_quirk(struct cam_ed
*device
)
6401 match
= cam_quirkmatch((caddr_t
)&device
->inq_data
,
6402 (caddr_t
)xpt_quirk_table
,
6403 sizeof(xpt_quirk_table
)/sizeof(*xpt_quirk_table
),
6404 sizeof(*xpt_quirk_table
), scsi_inquiry_match
);
6407 panic("xpt_find_quirk: device didn't match wildcard entry!!");
6409 device
->quirk
= (struct xpt_quirk_entry
*)match
;
6413 sysctl_cam_search_luns(SYSCTL_HANDLER_ARGS
)
6418 error
= sysctl_handle_int(oidp
, &bool, 0, req
);
6419 if (error
!= 0 || req
->newptr
== NULL
)
6421 if (bool == 0 || bool == 1) {
6430 xpt_devise_transport(struct cam_path
*path
)
6432 struct ccb_pathinq cpi
;
6433 struct ccb_trans_settings cts
;
6434 struct scsi_inquiry_data
*inq_buf
;
6436 /* Get transport information from the SIM */
6437 xpt_setup_ccb(&cpi
.ccb_h
, path
, /*priority*/1);
6438 cpi
.ccb_h
.func_code
= XPT_PATH_INQ
;
6439 xpt_action((union ccb
*)&cpi
);
6442 if ((path
->device
->flags
& CAM_DEV_INQUIRY_DATA_VALID
) != 0)
6443 inq_buf
= &path
->device
->inq_data
;
6444 path
->device
->protocol
= PROTO_SCSI
;
6445 path
->device
->protocol_version
=
6446 inq_buf
!= NULL
? SID_ANSI_REV(inq_buf
) : cpi
.protocol_version
;
6447 path
->device
->transport
= cpi
.transport
;
6448 path
->device
->transport_version
= cpi
.transport_version
;
6451 * Any device not using SPI3 features should
6452 * be considered SPI2 or lower.
6454 if (inq_buf
!= NULL
) {
6455 if (path
->device
->transport
== XPORT_SPI
6456 && (inq_buf
->spi3data
& SID_SPI_MASK
) == 0
6457 && path
->device
->transport_version
> 2)
6458 path
->device
->transport_version
= 2;
6460 struct cam_ed
* otherdev
;
6462 for (otherdev
= TAILQ_FIRST(&path
->target
->ed_entries
);
6464 otherdev
= TAILQ_NEXT(otherdev
, links
)) {
6465 if (otherdev
!= path
->device
)
6469 if (otherdev
!= NULL
) {
6471 * Initially assume the same versioning as
6472 * prior luns for this target.
6474 path
->device
->protocol_version
=
6475 otherdev
->protocol_version
;
6476 path
->device
->transport_version
=
6477 otherdev
->transport_version
;
6479 /* Until we know better, opt for safty */
6480 path
->device
->protocol_version
= 2;
6481 if (path
->device
->transport
== XPORT_SPI
)
6482 path
->device
->transport_version
= 2;
6484 path
->device
->transport_version
= 0;
6490 * For a device compliant with SPC-2 we should be able
6491 * to determine the transport version supported by
6492 * scrutinizing the version descriptors in the
6496 /* Tell the controller what we think */
6497 xpt_setup_ccb(&cts
.ccb_h
, path
, /*priority*/1);
6498 cts
.ccb_h
.func_code
= XPT_SET_TRAN_SETTINGS
;
6499 cts
.type
= CTS_TYPE_CURRENT_SETTINGS
;
6500 cts
.transport
= path
->device
->transport
;
6501 cts
.transport_version
= path
->device
->transport_version
;
6502 cts
.protocol
= path
->device
->protocol
;
6503 cts
.protocol_version
= path
->device
->protocol_version
;
6504 cts
.proto_specific
.valid
= 0;
6505 cts
.xport_specific
.valid
= 0;
6506 xpt_action((union ccb
*)&cts
);
6510 xpt_set_transfer_settings(struct ccb_trans_settings
*cts
, struct cam_ed
*device
,
6513 struct ccb_pathinq cpi
;
6514 struct ccb_trans_settings cur_cts
;
6515 struct ccb_trans_settings_scsi
*scsi
;
6516 struct ccb_trans_settings_scsi
*cur_scsi
;
6517 struct cam_sim
*sim
;
6518 struct scsi_inquiry_data
*inq_data
;
6520 if (device
== NULL
) {
6521 cts
->ccb_h
.status
= CAM_PATH_INVALID
;
6522 xpt_done((union ccb
*)cts
);
6526 if (cts
->protocol
== PROTO_UNKNOWN
6527 || cts
->protocol
== PROTO_UNSPECIFIED
) {
6528 cts
->protocol
= device
->protocol
;
6529 cts
->protocol_version
= device
->protocol_version
;
6532 if (cts
->protocol_version
== PROTO_VERSION_UNKNOWN
6533 || cts
->protocol_version
== PROTO_VERSION_UNSPECIFIED
)
6534 cts
->protocol_version
= device
->protocol_version
;
6536 if (cts
->protocol
!= device
->protocol
) {
6537 xpt_print(cts
->ccb_h
.path
, "Uninitialized Protocol %x:%x?\n",
6538 cts
->protocol
, device
->protocol
);
6539 cts
->protocol
= device
->protocol
;
6542 if (cts
->protocol_version
> device
->protocol_version
) {
6544 xpt_print(cts
->ccb_h
.path
, "Down reving Protocol "
6545 "Version from %d to %d?\n", cts
->protocol_version
,
6546 device
->protocol_version
);
6548 cts
->protocol_version
= device
->protocol_version
;
6551 if (cts
->transport
== XPORT_UNKNOWN
6552 || cts
->transport
== XPORT_UNSPECIFIED
) {
6553 cts
->transport
= device
->transport
;
6554 cts
->transport_version
= device
->transport_version
;
6557 if (cts
->transport_version
== XPORT_VERSION_UNKNOWN
6558 || cts
->transport_version
== XPORT_VERSION_UNSPECIFIED
)
6559 cts
->transport_version
= device
->transport_version
;
6561 if (cts
->transport
!= device
->transport
) {
6562 xpt_print(cts
->ccb_h
.path
, "Uninitialized Transport %x:%x?\n",
6563 cts
->transport
, device
->transport
);
6564 cts
->transport
= device
->transport
;
6567 if (cts
->transport_version
> device
->transport_version
) {
6569 xpt_print(cts
->ccb_h
.path
, "Down reving Transport "
6570 "Version from %d to %d?\n", cts
->transport_version
,
6571 device
->transport_version
);
6573 cts
->transport_version
= device
->transport_version
;
6576 sim
= cts
->ccb_h
.path
->bus
->sim
;
6579 * Nothing more of interest to do unless
6580 * this is a device connected via the
6583 if (cts
->protocol
!= PROTO_SCSI
) {
6584 if (async_update
== FALSE
)
6585 (*(sim
->sim_action
))(sim
, (union ccb
*)cts
);
6589 inq_data
= &device
->inq_data
;
6590 scsi
= &cts
->proto_specific
.scsi
;
6591 xpt_setup_ccb(&cpi
.ccb_h
, cts
->ccb_h
.path
, /*priority*/1);
6592 cpi
.ccb_h
.func_code
= XPT_PATH_INQ
;
6593 xpt_action((union ccb
*)&cpi
);
6595 /* SCSI specific sanity checking */
6596 if ((cpi
.hba_inquiry
& PI_TAG_ABLE
) == 0
6597 || (INQ_DATA_TQ_ENABLED(inq_data
)) == 0
6598 || (device
->queue_flags
& SCP_QUEUE_DQUE
) != 0
6599 || (device
->quirk
->mintags
== 0)) {
6601 * Can't tag on hardware that doesn't support tags,
6602 * doesn't have it enabled, or has broken tag support.
6604 scsi
->flags
&= ~CTS_SCSI_FLAGS_TAG_ENB
;
6607 if (async_update
== FALSE
) {
6609 * Perform sanity checking against what the
6610 * controller and device can do.
6612 xpt_setup_ccb(&cur_cts
.ccb_h
, cts
->ccb_h
.path
, /*priority*/1);
6613 cur_cts
.ccb_h
.func_code
= XPT_GET_TRAN_SETTINGS
;
6614 cur_cts
.type
= cts
->type
;
6615 xpt_action((union ccb
*)&cur_cts
);
6616 if ((cur_cts
.ccb_h
.status
& CAM_STATUS_MASK
) != CAM_REQ_CMP
) {
6619 cur_scsi
= &cur_cts
.proto_specific
.scsi
;
6620 if ((scsi
->valid
& CTS_SCSI_VALID_TQ
) == 0) {
6621 scsi
->flags
&= ~CTS_SCSI_FLAGS_TAG_ENB
;
6622 scsi
->flags
|= cur_scsi
->flags
& CTS_SCSI_FLAGS_TAG_ENB
;
6624 if ((cur_scsi
->valid
& CTS_SCSI_VALID_TQ
) == 0)
6625 scsi
->flags
&= ~CTS_SCSI_FLAGS_TAG_ENB
;
6628 /* SPI specific sanity checking */
6629 if (cts
->transport
== XPORT_SPI
&& async_update
== FALSE
) {
6631 struct ccb_trans_settings_spi
*spi
;
6632 struct ccb_trans_settings_spi
*cur_spi
;
6634 spi
= &cts
->xport_specific
.spi
;
6636 cur_spi
= &cur_cts
.xport_specific
.spi
;
6638 /* Fill in any gaps in what the user gave us */
6639 if ((spi
->valid
& CTS_SPI_VALID_SYNC_RATE
) == 0)
6640 spi
->sync_period
= cur_spi
->sync_period
;
6641 if ((cur_spi
->valid
& CTS_SPI_VALID_SYNC_RATE
) == 0)
6642 spi
->sync_period
= 0;
6643 if ((spi
->valid
& CTS_SPI_VALID_SYNC_OFFSET
) == 0)
6644 spi
->sync_offset
= cur_spi
->sync_offset
;
6645 if ((cur_spi
->valid
& CTS_SPI_VALID_SYNC_OFFSET
) == 0)
6646 spi
->sync_offset
= 0;
6647 if ((spi
->valid
& CTS_SPI_VALID_PPR_OPTIONS
) == 0)
6648 spi
->ppr_options
= cur_spi
->ppr_options
;
6649 if ((cur_spi
->valid
& CTS_SPI_VALID_PPR_OPTIONS
) == 0)
6650 spi
->ppr_options
= 0;
6651 if ((spi
->valid
& CTS_SPI_VALID_BUS_WIDTH
) == 0)
6652 spi
->bus_width
= cur_spi
->bus_width
;
6653 if ((cur_spi
->valid
& CTS_SPI_VALID_BUS_WIDTH
) == 0)
6655 if ((spi
->valid
& CTS_SPI_VALID_DISC
) == 0) {
6656 spi
->flags
&= ~CTS_SPI_FLAGS_DISC_ENB
;
6657 spi
->flags
|= cur_spi
->flags
& CTS_SPI_FLAGS_DISC_ENB
;
6659 if ((cur_spi
->valid
& CTS_SPI_VALID_DISC
) == 0)
6660 spi
->flags
&= ~CTS_SPI_FLAGS_DISC_ENB
;
6661 if (((device
->flags
& CAM_DEV_INQUIRY_DATA_VALID
) != 0
6662 && (inq_data
->flags
& SID_Sync
) == 0
6663 && cts
->type
== CTS_TYPE_CURRENT_SETTINGS
)
6664 || ((cpi
.hba_inquiry
& PI_SDTR_ABLE
) == 0)
6665 || (spi
->sync_offset
== 0)
6666 || (spi
->sync_period
== 0)) {
6668 spi
->sync_period
= 0;
6669 spi
->sync_offset
= 0;
6672 switch (spi
->bus_width
) {
6673 case MSG_EXT_WDTR_BUS_32_BIT
:
6674 if (((device
->flags
& CAM_DEV_INQUIRY_DATA_VALID
) == 0
6675 || (inq_data
->flags
& SID_WBus32
) != 0
6676 || cts
->type
== CTS_TYPE_USER_SETTINGS
)
6677 && (cpi
.hba_inquiry
& PI_WIDE_32
) != 0)
6679 /* Fall Through to 16-bit */
6680 case MSG_EXT_WDTR_BUS_16_BIT
:
6681 if (((device
->flags
& CAM_DEV_INQUIRY_DATA_VALID
) == 0
6682 || (inq_data
->flags
& SID_WBus16
) != 0
6683 || cts
->type
== CTS_TYPE_USER_SETTINGS
)
6684 && (cpi
.hba_inquiry
& PI_WIDE_16
) != 0) {
6685 spi
->bus_width
= MSG_EXT_WDTR_BUS_16_BIT
;
6688 /* Fall Through to 8-bit */
6689 default: /* New bus width?? */
6690 case MSG_EXT_WDTR_BUS_8_BIT
:
6691 /* All targets can do this */
6692 spi
->bus_width
= MSG_EXT_WDTR_BUS_8_BIT
;
6696 spi3caps
= cpi
.xport_specific
.spi
.ppr_options
;
6697 if ((device
->flags
& CAM_DEV_INQUIRY_DATA_VALID
) != 0
6698 && cts
->type
== CTS_TYPE_CURRENT_SETTINGS
)
6699 spi3caps
&= inq_data
->spi3data
;
6701 if ((spi3caps
& SID_SPI_CLOCK_DT
) == 0)
6702 spi
->ppr_options
&= ~MSG_EXT_PPR_DT_REQ
;
6704 if ((spi3caps
& SID_SPI_IUS
) == 0)
6705 spi
->ppr_options
&= ~MSG_EXT_PPR_IU_REQ
;
6707 if ((spi3caps
& SID_SPI_QAS
) == 0)
6708 spi
->ppr_options
&= ~MSG_EXT_PPR_QAS_REQ
;
6710 /* No SPI Transfer settings are allowed unless we are wide */
6711 if (spi
->bus_width
== 0)
6712 spi
->ppr_options
= 0;
6714 if ((spi
->flags
& CTS_SPI_FLAGS_DISC_ENB
) == 0) {
6716 * Can't tag queue without disconnection.
6718 scsi
->flags
&= ~CTS_SCSI_FLAGS_TAG_ENB
;
6719 scsi
->valid
|= CTS_SCSI_VALID_TQ
;
6723 * If we are currently performing tagged transactions to
6724 * this device and want to change its negotiation parameters,
6725 * go non-tagged for a bit to give the controller a chance to
6726 * negotiate unhampered by tag messages.
6728 if (cts
->type
== CTS_TYPE_CURRENT_SETTINGS
6729 && (device
->inq_flags
& SID_CmdQue
) != 0
6730 && (scsi
->flags
& CTS_SCSI_FLAGS_TAG_ENB
) != 0
6731 && (spi
->flags
& (CTS_SPI_VALID_SYNC_RATE
|
6732 CTS_SPI_VALID_SYNC_OFFSET
|
6733 CTS_SPI_VALID_BUS_WIDTH
)) != 0)
6734 xpt_toggle_tags(cts
->ccb_h
.path
);
6737 if (cts
->type
== CTS_TYPE_CURRENT_SETTINGS
6738 && (scsi
->valid
& CTS_SCSI_VALID_TQ
) != 0) {
6742 * If we are transitioning from tags to no-tags or
6743 * vice-versa, we need to carefully freeze and restart
6744 * the queue so that we don't overlap tagged and non-tagged
6745 * commands. We also temporarily stop tags if there is
6746 * a change in transfer negotiation settings to allow
6747 * "tag-less" negotiation.
6749 if ((device
->flags
& CAM_DEV_TAG_AFTER_COUNT
) != 0
6750 || (device
->inq_flags
& SID_CmdQue
) != 0)
6751 device_tagenb
= TRUE
;
6753 device_tagenb
= FALSE
;
6755 if (((scsi
->flags
& CTS_SCSI_FLAGS_TAG_ENB
) != 0
6756 && device_tagenb
== FALSE
)
6757 || ((scsi
->flags
& CTS_SCSI_FLAGS_TAG_ENB
) == 0
6758 && device_tagenb
== TRUE
)) {
6760 if ((scsi
->flags
& CTS_SCSI_FLAGS_TAG_ENB
) != 0) {
6762 * Delay change to use tags until after a
6763 * few commands have gone to this device so
6764 * the controller has time to perform transfer
6765 * negotiations without tagged messages getting
6768 device
->tag_delay_count
= CAM_TAG_DELAY_COUNT
;
6769 device
->flags
|= CAM_DEV_TAG_AFTER_COUNT
;
6771 struct ccb_relsim crs
;
6773 xpt_freeze_devq(cts
->ccb_h
.path
, /*count*/1);
6774 device
->inq_flags
&= ~SID_CmdQue
;
6775 xpt_dev_ccbq_resize(cts
->ccb_h
.path
,
6776 sim
->max_dev_openings
);
6777 device
->flags
&= ~CAM_DEV_TAG_AFTER_COUNT
;
6778 device
->tag_delay_count
= 0;
6780 xpt_setup_ccb(&crs
.ccb_h
, cts
->ccb_h
.path
,
6782 crs
.ccb_h
.func_code
= XPT_REL_SIMQ
;
6783 crs
.release_flags
= RELSIM_RELEASE_AFTER_QEMPTY
;
6785 = crs
.release_timeout
6788 xpt_action((union ccb
*)&crs
);
6792 if (async_update
== FALSE
)
6793 (*(sim
->sim_action
))(sim
, (union ccb
*)cts
);
6797 xpt_toggle_tags(struct cam_path
*path
)
6802 * Give controllers a chance to renegotiate
6803 * before starting tag operations. We
6804 * "toggle" tagged queuing off then on
6805 * which causes the tag enable command delay
6806 * counter to come into effect.
6809 if ((dev
->flags
& CAM_DEV_TAG_AFTER_COUNT
) != 0
6810 || ((dev
->inq_flags
& SID_CmdQue
) != 0
6811 && (dev
->inq_flags
& (SID_Sync
|SID_WBus16
|SID_WBus32
)) != 0)) {
6812 struct ccb_trans_settings cts
;
6814 xpt_setup_ccb(&cts
.ccb_h
, path
, 1);
6815 cts
.protocol
= PROTO_SCSI
;
6816 cts
.protocol_version
= PROTO_VERSION_UNSPECIFIED
;
6817 cts
.transport
= XPORT_UNSPECIFIED
;
6818 cts
.transport_version
= XPORT_VERSION_UNSPECIFIED
;
6819 cts
.proto_specific
.scsi
.flags
= 0;
6820 cts
.proto_specific
.scsi
.valid
= CTS_SCSI_VALID_TQ
;
6821 xpt_set_transfer_settings(&cts
, path
->device
,
6822 /*async_update*/TRUE
);
6823 cts
.proto_specific
.scsi
.flags
= CTS_SCSI_FLAGS_TAG_ENB
;
6824 xpt_set_transfer_settings(&cts
, path
->device
,
6825 /*async_update*/TRUE
);
6830 xpt_start_tags(struct cam_path
*path
)
6832 struct ccb_relsim crs
;
6833 struct cam_ed
*device
;
6834 struct cam_sim
*sim
;
6837 device
= path
->device
;
6838 sim
= path
->bus
->sim
;
6839 device
->flags
&= ~CAM_DEV_TAG_AFTER_COUNT
;
6840 xpt_freeze_devq(path
, /*count*/1);
6841 device
->inq_flags
|= SID_CmdQue
;
6842 if (device
->tag_saved_openings
!= 0)
6843 newopenings
= device
->tag_saved_openings
;
6845 newopenings
= min(device
->quirk
->maxtags
,
6846 sim
->max_tagged_dev_openings
);
6847 xpt_dev_ccbq_resize(path
, newopenings
);
6848 xpt_setup_ccb(&crs
.ccb_h
, path
, /*priority*/1);
6849 crs
.ccb_h
.func_code
= XPT_REL_SIMQ
;
6850 crs
.release_flags
= RELSIM_RELEASE_AFTER_QEMPTY
;
6852 = crs
.release_timeout
6855 xpt_action((union ccb
*)&crs
);
6858 static int busses_to_config
;
6859 static int busses_to_reset
;
6862 xptconfigbuscountfunc(struct cam_eb
*bus
, void *arg
)
6865 sim_lock_assert_owned(bus
->sim
->lock
);
6867 if (bus
->path_id
!= CAM_XPT_PATH_ID
) {
6868 struct cam_path path
;
6869 struct ccb_pathinq cpi
;
6873 xpt_compile_path(&path
, NULL
, bus
->path_id
,
6874 CAM_TARGET_WILDCARD
, CAM_LUN_WILDCARD
);
6875 xpt_setup_ccb(&cpi
.ccb_h
, &path
, /*priority*/1);
6876 cpi
.ccb_h
.func_code
= XPT_PATH_INQ
;
6877 xpt_action((union ccb
*)&cpi
);
6878 can_negotiate
= cpi
.hba_inquiry
;
6879 can_negotiate
&= (PI_WIDE_32
|PI_WIDE_16
|PI_SDTR_ABLE
);
6880 if ((cpi
.hba_misc
& PIM_NOBUSRESET
) == 0
6883 xpt_release_path(&path
);
6890 xptconfigfunc(struct cam_eb
*bus
, void *arg
)
6892 struct cam_path
*path
;
6893 union ccb
*work_ccb
;
6895 sim_lock_assert_owned(bus
->sim
->lock
);
6897 if (bus
->path_id
!= CAM_XPT_PATH_ID
) {
6901 work_ccb
= xpt_alloc_ccb();
6902 if ((status
= xpt_create_path(&path
, xpt_periph
, bus
->path_id
,
6903 CAM_TARGET_WILDCARD
,
6904 CAM_LUN_WILDCARD
)) !=CAM_REQ_CMP
){
6905 kprintf("xptconfigfunc: xpt_create_path failed with "
6906 "status %#x for bus %d\n", status
, bus
->path_id
);
6907 kprintf("xptconfigfunc: halting bus configuration\n");
6908 xpt_free_ccb(work_ccb
);
6910 xpt_finishconfig(xpt_periph
, NULL
);
6913 xpt_setup_ccb(&work_ccb
->ccb_h
, path
, /*priority*/1);
6914 work_ccb
->ccb_h
.func_code
= XPT_PATH_INQ
;
6915 xpt_action(work_ccb
);
6916 if (work_ccb
->ccb_h
.status
!= CAM_REQ_CMP
) {
6917 kprintf("xptconfigfunc: CPI failed on bus %d "
6918 "with status %d\n", bus
->path_id
,
6919 work_ccb
->ccb_h
.status
);
6920 xpt_finishconfig(xpt_periph
, work_ccb
);
6924 can_negotiate
= work_ccb
->cpi
.hba_inquiry
;
6925 can_negotiate
&= (PI_WIDE_32
|PI_WIDE_16
|PI_SDTR_ABLE
);
6926 if ((work_ccb
->cpi
.hba_misc
& PIM_NOBUSRESET
) == 0
6927 && (can_negotiate
!= 0)) {
6928 xpt_setup_ccb(&work_ccb
->ccb_h
, path
, /*priority*/1);
6929 work_ccb
->ccb_h
.func_code
= XPT_RESET_BUS
;
6930 work_ccb
->ccb_h
.cbfcnp
= NULL
;
6931 CAM_DEBUG(path
, CAM_DEBUG_SUBTRACE
,
6932 ("Resetting Bus\n"));
6933 xpt_action(work_ccb
);
6934 xpt_finishconfig(xpt_periph
, work_ccb
);
6936 /* Act as though we performed a successful BUS RESET */
6937 work_ccb
->ccb_h
.func_code
= XPT_RESET_BUS
;
6938 xpt_finishconfig(xpt_periph
, work_ccb
);
6946 xpt_config(void *arg
)
6949 * Now that interrupts are enabled, go find our devices
6953 /* Setup debugging flags and path */
6954 #ifdef CAM_DEBUG_FLAGS
6955 cam_dflags
= CAM_DEBUG_FLAGS
;
6956 #else /* !CAM_DEBUG_FLAGS */
6957 cam_dflags
= CAM_DEBUG_NONE
;
6958 #endif /* CAM_DEBUG_FLAGS */
6959 #ifdef CAM_DEBUG_BUS
6960 if (cam_dflags
!= CAM_DEBUG_NONE
) {
6962 * Locking is specifically omitted here. No SIMs have
6963 * registered yet, so xpt_create_path will only be searching
6964 * empty lists of targets and devices.
6966 if (xpt_create_path(&cam_dpath
, xpt_periph
,
6967 CAM_DEBUG_BUS
, CAM_DEBUG_TARGET
,
6968 CAM_DEBUG_LUN
) != CAM_REQ_CMP
) {
6969 kprintf("xpt_config: xpt_create_path() failed for debug"
6970 " target %d:%d:%d, debugging disabled\n",
6971 CAM_DEBUG_BUS
, CAM_DEBUG_TARGET
, CAM_DEBUG_LUN
);
6972 cam_dflags
= CAM_DEBUG_NONE
;
6976 #else /* !CAM_DEBUG_BUS */
6978 #endif /* CAM_DEBUG_BUS */
6979 #endif /* CAMDEBUG */
6982 * Scan all installed busses.
6984 xpt_for_all_busses(xptconfigbuscountfunc
, NULL
);
6986 if (busses_to_config
== 0) {
6987 /* Call manually because we don't have any busses */
6988 xpt_finishconfig(xpt_periph
, NULL
);
6990 if (busses_to_reset
> 0 && scsi_delay
>= 2000) {
6991 kprintf("Waiting %d seconds for SCSI "
6992 "devices to settle\n", scsi_delay
/1000);
6994 xpt_for_all_busses(xptconfigfunc
, NULL
);
6999 * If the given device only has one peripheral attached to it, and if that
7000 * peripheral is the passthrough driver, announce it. This insures that the
7001 * user sees some sort of announcement for every peripheral in their system.
7004 xptpassannouncefunc(struct cam_ed
*device
, void *arg
)
7006 struct cam_periph
*periph
;
7009 for (periph
= SLIST_FIRST(&device
->periphs
), i
= 0; periph
!= NULL
;
7010 periph
= SLIST_NEXT(periph
, periph_links
), i
++);
7012 periph
= SLIST_FIRST(&device
->periphs
);
7014 && (strncmp(periph
->periph_name
, "pass", 4) == 0))
7015 xpt_announce_periph(periph
, NULL
);
7021 xpt_finishconfig_task(void *context
, int pending
)
7023 struct periph_driver
**p_drv
;
7026 if (busses_to_config
== 0) {
7027 /* Register all the peripheral drivers */
7028 /* XXX This will have to change when we have loadable modules */
7029 p_drv
= periph_drivers
;
7030 for (i
= 0; p_drv
[i
] != NULL
; i
++) {
7031 (*p_drv
[i
]->init
)();
7035 * Check for devices with no "standard" peripheral driver
7036 * attached. For any devices like that, announce the
7037 * passthrough driver so the user will see something.
7039 xpt_for_all_devices(xptpassannouncefunc
, NULL
);
7041 /* Release our hook so that the boot can continue. */
7042 config_intrhook_disestablish(xsoftc
.xpt_config_hook
);
7043 kfree(xsoftc
.xpt_config_hook
, M_CAMXPT
);
7044 xsoftc
.xpt_config_hook
= NULL
;
7047 kfree(context
, M_CAMXPT
);
7051 xpt_finishconfig(struct cam_periph
*periph
, union ccb
*done_ccb
)
7053 struct xpt_task
*task
;
7055 if (done_ccb
!= NULL
) {
7056 CAM_DEBUG(done_ccb
->ccb_h
.path
, CAM_DEBUG_TRACE
,
7057 ("xpt_finishconfig\n"));
7058 switch(done_ccb
->ccb_h
.func_code
) {
7060 if (done_ccb
->ccb_h
.status
== CAM_REQ_CMP
) {
7061 done_ccb
->ccb_h
.func_code
= XPT_SCAN_BUS
;
7062 done_ccb
->ccb_h
.cbfcnp
= xpt_finishconfig
;
7063 done_ccb
->crcn
.flags
= 0;
7064 xpt_action(done_ccb
);
7070 xpt_free_path(done_ccb
->ccb_h
.path
);
7076 if (busses_to_config
== 0) {
7077 task
= kmalloc(sizeof(struct xpt_task
), M_CAMXPT
, M_INTWAIT
);
7078 TASK_INIT(&task
->task
, 0, xpt_finishconfig_task
, task
);
7079 taskqueue_enqueue(taskqueue_thread
[mycpuid
], &task
->task
);
7082 if (done_ccb
!= NULL
)
7083 xpt_free_ccb(done_ccb
);
7087 xpt_register_async(int event
, ac_callback_t
*cbfunc
, void *cbarg
,
7088 struct cam_path
*path
)
7090 struct ccb_setasync csa
;
7095 lockmgr(&xsoftc
.xpt_lock
, LK_EXCLUSIVE
);
7096 status
= xpt_create_path(&path
, /*periph*/NULL
, CAM_XPT_PATH_ID
,
7097 CAM_TARGET_WILDCARD
, CAM_LUN_WILDCARD
);
7098 if (status
!= CAM_REQ_CMP
) {
7099 lockmgr(&xsoftc
.xpt_lock
, LK_RELEASE
);
7105 xpt_setup_ccb(&csa
.ccb_h
, path
, /*priority*/5);
7106 csa
.ccb_h
.func_code
= XPT_SASYNC_CB
;
7107 csa
.event_enable
= event
;
7108 csa
.callback
= cbfunc
;
7109 csa
.callback_arg
= cbarg
;
7110 xpt_action((union ccb
*)&csa
);
7111 status
= csa
.ccb_h
.status
;
7113 xpt_free_path(path
);
7114 lockmgr(&xsoftc
.xpt_lock
, LK_RELEASE
);
7120 xptaction(struct cam_sim
*sim
, union ccb
*work_ccb
)
7122 CAM_DEBUG(work_ccb
->ccb_h
.path
, CAM_DEBUG_TRACE
, ("xptaction\n"));
7124 switch (work_ccb
->ccb_h
.func_code
) {
7125 /* Common cases first */
7126 case XPT_PATH_INQ
: /* Path routing inquiry */
7128 struct ccb_pathinq
*cpi
;
7130 cpi
= &work_ccb
->cpi
;
7131 cpi
->version_num
= 1; /* XXX??? */
7132 cpi
->hba_inquiry
= 0;
7133 cpi
->target_sprt
= 0;
7135 cpi
->hba_eng_cnt
= 0;
7136 cpi
->max_target
= 0;
7138 cpi
->initiator_id
= 0;
7139 strncpy(cpi
->sim_vid
, "FreeBSD", SIM_IDLEN
);
7140 strncpy(cpi
->hba_vid
, "", HBA_IDLEN
);
7141 strncpy(cpi
->dev_name
, sim
->sim_name
, DEV_IDLEN
);
7142 cpi
->unit_number
= sim
->unit_number
;
7143 cpi
->bus_id
= sim
->bus_id
;
7144 cpi
->base_transfer_speed
= 0;
7145 cpi
->protocol
= PROTO_UNSPECIFIED
;
7146 cpi
->protocol_version
= PROTO_VERSION_UNSPECIFIED
;
7147 cpi
->transport
= XPORT_UNSPECIFIED
;
7148 cpi
->transport_version
= XPORT_VERSION_UNSPECIFIED
;
7149 cpi
->ccb_h
.status
= CAM_REQ_CMP
;
7154 work_ccb
->ccb_h
.status
= CAM_REQ_INVALID
;
7161 * The xpt as a "controller" has no interrupt sources, so polling
7165 xptpoll(struct cam_sim
*sim
)
7170 xpt_lock_buses(void)
7172 lockmgr(&xsoftc
.xpt_topo_lock
, LK_EXCLUSIVE
);
7176 xpt_unlock_buses(void)
7178 lockmgr(&xsoftc
.xpt_topo_lock
, LK_RELEASE
);
7183 * Should only be called by the machine interrupt dispatch routines,
7184 * so put these prototypes here instead of in the header.
7188 swi_cambio(void *arg
, void *frame
)
7197 struct cam_sim
*sim
;
7199 spin_lock_wr(&cam_simq_spin
);
7201 TAILQ_CONCAT(&queue
, &cam_simq
, links
);
7202 spin_unlock_wr(&cam_simq_spin
);
7204 while ((sim
= TAILQ_FIRST(&queue
)) != NULL
) {
7205 TAILQ_REMOVE(&queue
, sim
, links
);
7207 sim
->flags
&= ~CAM_SIM_ON_DONEQ
;
7208 camisr_runqueue(sim
);
7209 CAM_SIM_UNLOCK(sim
);
7214 camisr_runqueue(struct cam_sim
*sim
)
7216 struct ccb_hdr
*ccb_h
;
7219 spin_lock_wr(&sim
->sim_spin
);
7220 while ((ccb_h
= TAILQ_FIRST(&sim
->sim_doneq
)) != NULL
) {
7221 TAILQ_REMOVE(&sim
->sim_doneq
, ccb_h
, sim_links
.tqe
);
7222 spin_unlock_wr(&sim
->sim_spin
);
7223 ccb_h
->pinfo
.index
= CAM_UNQUEUED_INDEX
;
7225 CAM_DEBUG(ccb_h
->path
, CAM_DEBUG_TRACE
,
7230 if (ccb_h
->flags
& CAM_HIGH_POWER
) {
7231 struct highpowerlist
*hphead
;
7232 struct cam_ed
*device
;
7233 union ccb
*send_ccb
;
7235 lockmgr(&xsoftc
.xpt_lock
, LK_EXCLUSIVE
);
7236 hphead
= &xsoftc
.highpowerq
;
7238 send_ccb
= (union ccb
*)STAILQ_FIRST(hphead
);
7241 * Increment the count since this command is done.
7243 xsoftc
.num_highpower
++;
7246 * Any high powered commands queued up?
7248 if (send_ccb
!= NULL
) {
7249 device
= send_ccb
->ccb_h
.path
->device
;
7251 STAILQ_REMOVE_HEAD(hphead
, xpt_links
.stqe
);
7252 lockmgr(&xsoftc
.xpt_lock
, LK_RELEASE
);
7254 xpt_release_devq(send_ccb
->ccb_h
.path
,
7255 /*count*/1, /*runqueue*/TRUE
);
7257 lockmgr(&xsoftc
.xpt_lock
, LK_RELEASE
);
7260 if ((ccb_h
->func_code
& XPT_FC_USER_CCB
) == 0) {
7263 dev
= ccb_h
->path
->device
;
7265 cam_ccbq_ccb_done(&dev
->ccbq
, (union ccb
*)ccb_h
);
7268 * devq may be NULL if this is cam_dead_sim
7270 if (ccb_h
->path
->bus
->sim
->devq
) {
7271 ccb_h
->path
->bus
->sim
->devq
->send_active
--;
7272 ccb_h
->path
->bus
->sim
->devq
->send_openings
++;
7275 if (((dev
->flags
& CAM_DEV_REL_ON_COMPLETE
) != 0
7276 && (ccb_h
->status
&CAM_STATUS_MASK
) != CAM_REQUEUE_REQ
)
7277 || ((dev
->flags
& CAM_DEV_REL_ON_QUEUE_EMPTY
) != 0
7278 && (dev
->ccbq
.dev_active
== 0))) {
7280 xpt_release_devq(ccb_h
->path
, /*count*/1,
7284 if ((dev
->flags
& CAM_DEV_TAG_AFTER_COUNT
) != 0
7285 && (--dev
->tag_delay_count
== 0))
7286 xpt_start_tags(ccb_h
->path
);
7288 if ((dev
->ccbq
.queue
.entries
> 0)
7289 && (dev
->qfrozen_cnt
== 0)
7290 && (device_is_send_queued(dev
) == 0)) {
7291 runq
= xpt_schedule_dev_sendq(ccb_h
->path
->bus
,
7296 if (ccb_h
->status
& CAM_RELEASE_SIMQ
) {
7297 xpt_release_simq(ccb_h
->path
->bus
->sim
,
7299 ccb_h
->status
&= ~CAM_RELEASE_SIMQ
;
7303 if ((ccb_h
->flags
& CAM_DEV_QFRZDIS
)
7304 && (ccb_h
->status
& CAM_DEV_QFRZN
)) {
7305 xpt_release_devq(ccb_h
->path
, /*count*/1,
7307 ccb_h
->status
&= ~CAM_DEV_QFRZN
;
7309 xpt_run_dev_sendq(ccb_h
->path
->bus
);
7312 /* Call the peripheral driver's callback */
7313 (*ccb_h
->cbfcnp
)(ccb_h
->path
->periph
, (union ccb
*)ccb_h
);
7314 spin_lock_wr(&sim
->sim_spin
);
7316 spin_unlock_wr(&sim
->sim_spin
);
7320 * The dead_sim isn't completely hooked into CAM, we have to make sure
7321 * the doneq is cleared after calling xpt_done() so cam_periph_ccbwait()
7325 dead_sim_action(struct cam_sim
*sim
, union ccb
*ccb
)
7328 ccb
->ccb_h
.status
= CAM_DEV_NOT_THERE
;
7330 camisr_runqueue(sim
);
7334 dead_sim_poll(struct cam_sim
*sim
)