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;
260 /* Registered busses */
261 TAILQ_HEAD(,cam_eb) xpt_busses;
262 u_int bus_generation;
264 struct intr_config_hook *xpt_config_hook;
266 struct lock xpt_topo_lock;
267 struct lock xpt_lock;
270 static const char quantum[] = "QUANTUM";
271 static const char sony[] = "SONY";
272 static const char west_digital[] = "WDIGTL";
273 static const char samsung[] = "SAMSUNG";
274 static const char seagate[] = "SEAGATE";
275 static const char microp[] = "MICROP";
277 static struct xpt_quirk_entry xpt_quirk_table[] =
280 /* Reports QUEUE FULL for temporary resource shortages */
281 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP39100*", "*" },
282 /*quirks*/0, /*mintags*/24, /*maxtags*/32
285 /* Reports QUEUE FULL for temporary resource shortages */
286 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP34550*", "*" },
287 /*quirks*/0, /*mintags*/24, /*maxtags*/32
290 /* Reports QUEUE FULL for temporary resource shortages */
291 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP32275*", "*" },
292 /*quirks*/0, /*mintags*/24, /*maxtags*/32
295 /* Broken tagged queuing drive */
296 { T_DIRECT, SIP_MEDIA_FIXED, microp, "4421-07*", "*" },
297 /*quirks*/0, /*mintags*/0, /*maxtags*/0
300 /* Broken tagged queuing drive */
301 { T_DIRECT, SIP_MEDIA_FIXED, "HP", "C372*", "*" },
302 /*quirks*/0, /*mintags*/0, /*maxtags*/0
305 /* Broken tagged queuing drive */
306 { T_DIRECT, SIP_MEDIA_FIXED, microp, "3391*", "x43h" },
307 /*quirks*/0, /*mintags*/0, /*maxtags*/0
311 * Unfortunately, the Quantum Atlas III has the same
312 * problem as the Atlas II drives above.
313 * Reported by: "Johan Granlund" <johan@granlund.nu>
315 * For future reference, the drive with the problem was:
316 * QUANTUM QM39100TD-SW N1B0
318 * It's possible that Quantum will fix the problem in later
319 * firmware revisions. If that happens, the quirk entry
320 * will need to be made specific to the firmware revisions
324 /* Reports QUEUE FULL for temporary resource shortages */
325 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "QM39100*", "*" },
326 /*quirks*/0, /*mintags*/24, /*maxtags*/32
330 * 18 Gig Atlas III, same problem as the 9G version.
331 * Reported by: Andre Albsmeier
332 * <andre.albsmeier@mchp.siemens.de>
334 * For future reference, the drive with the problem was:
335 * QUANTUM QM318000TD-S N491
337 /* Reports QUEUE FULL for temporary resource shortages */
338 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "QM318000*", "*" },
339 /*quirks*/0, /*mintags*/24, /*maxtags*/32
343 * Broken tagged queuing drive
344 * Reported by: Bret Ford <bford@uop.cs.uop.edu>
345 * and: Martin Renters <martin@tdc.on.ca>
347 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST410800*", "71*" },
348 /*quirks*/0, /*mintags*/0, /*maxtags*/0
351 * The Seagate Medalist Pro drives have very poor write
352 * performance with anything more than 2 tags.
354 * Reported by: Paul van der Zwan <paulz@trantor.xs4all.nl>
355 * Drive: <SEAGATE ST36530N 1444>
357 * Reported by: Jeremy Lea <reg@shale.csir.co.za>
358 * Drive: <SEAGATE ST34520W 1281>
360 * No one has actually reported that the 9G version
361 * (ST39140*) of the Medalist Pro has the same problem, but
362 * we're assuming that it does because the 4G and 6.5G
363 * versions of the drive are broken.
366 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST34520*", "*"},
367 /*quirks*/0, /*mintags*/2, /*maxtags*/2
370 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST36530*", "*"},
371 /*quirks*/0, /*mintags*/2, /*maxtags*/2
374 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST39140*", "*"},
375 /*quirks*/0, /*mintags*/2, /*maxtags*/2
379 * Slow when tagged queueing is enabled. Write performance
380 * steadily drops off with more and more concurrent
381 * transactions. Best sequential write performance with
382 * tagged queueing turned off and write caching turned on.
385 * Submitted by: Hideaki Okada <hokada@isl.melco.co.jp>
386 * Drive: DCAS-34330 w/ "S65A" firmware.
388 * The drive with the problem had the "S65A" firmware
389 * revision, and has also been reported (by Stephen J.
390 * Roznowski <sjr@home.net>) for a drive with the "S61A"
393 * Although no one has reported problems with the 2 gig
394 * version of the DCAS drive, the assumption is that it
395 * has the same problems as the 4 gig version. Therefore
396 * this quirk entries disables tagged queueing for all
399 { T_DIRECT, SIP_MEDIA_FIXED, "IBM", "DCAS*", "*" },
400 /*quirks*/0, /*mintags*/0, /*maxtags*/0
403 /* Broken tagged queuing drive */
404 { T_DIRECT, SIP_MEDIA_REMOVABLE, "iomega", "jaz*", "*" },
405 /*quirks*/0, /*mintags*/0, /*maxtags*/0
408 /* Broken tagged queuing drive */
409 { T_DIRECT, SIP_MEDIA_FIXED, "CONNER", "CFP2107*", "*" },
410 /*quirks*/0, /*mintags*/0, /*maxtags*/0
413 /* This does not support other than LUN 0 */
414 { T_DIRECT, SIP_MEDIA_FIXED, "VMware*", "*", "*" },
415 CAM_QUIRK_NOLUNS, /*mintags*/2, /*maxtags*/255
419 * Broken tagged queuing drive.
421 * NAKAJI Hiroyuki <nakaji@zeisei.dpri.kyoto-u.ac.jp>
424 { T_DIRECT, SIP_MEDIA_FIXED, samsung, "WN34324U*", "*" },
425 /*quirks*/0, /*mintags*/0, /*maxtags*/0
429 * Slow when tagged queueing is enabled. (1.5MB/sec versus
431 * Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
432 * Best performance with these drives is achieved with
433 * tagged queueing turned off, and write caching turned on.
435 { T_DIRECT, SIP_MEDIA_FIXED, west_digital, "WDE*", "*" },
436 /*quirks*/0, /*mintags*/0, /*maxtags*/0
440 * Slow when tagged queueing is enabled. (1.5MB/sec versus
442 * Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
443 * Best performance with these drives is achieved with
444 * tagged queueing turned off, and write caching turned on.
446 { T_DIRECT, SIP_MEDIA_FIXED, west_digital, "ENTERPRISE", "*" },
447 /*quirks*/0, /*mintags*/0, /*maxtags*/0
451 * Doesn't handle queue full condition correctly,
452 * so we need to limit maxtags to what the device
453 * can handle instead of determining this automatically.
455 { T_DIRECT, SIP_MEDIA_FIXED, samsung, "WN321010S*", "*" },
456 /*quirks*/0, /*mintags*/2, /*maxtags*/32
459 /* Really only one LUN */
460 { T_ENCLOSURE, SIP_MEDIA_FIXED, "SUN", "SENA", "*" },
461 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
464 /* I can't believe we need a quirk for DPT volumes. */
465 { T_ANY, SIP_MEDIA_FIXED|SIP_MEDIA_REMOVABLE, "DPT", "*", "*" },
467 /*mintags*/0, /*maxtags*/255
471 * Many Sony CDROM drives don't like multi-LUN probing.
473 { T_CDROM, SIP_MEDIA_REMOVABLE, sony, "CD-ROM CDU*", "*" },
474 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
478 * This drive doesn't like multiple LUN probing.
479 * Submitted by: Parag Patel <parag@cgt.com>
481 { T_WORM, SIP_MEDIA_REMOVABLE, sony, "CD-R CDU9*", "*" },
482 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
485 { T_WORM, SIP_MEDIA_REMOVABLE, "YAMAHA", "CDR100*", "*" },
486 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
490 * The 8200 doesn't like multi-lun probing, and probably
491 * don't like serial number requests either.
494 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "EXABYTE",
497 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
501 * Let's try the same as above, but for a drive that says
502 * it's an IPL-6860 but is actually an EXB 8200.
505 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "EXABYTE",
508 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
512 * These Hitachi drives don't like multi-lun probing.
513 * The PR submitter has a DK319H, but says that the Linux
514 * kernel has a similar work-around for the DK312 and DK314,
515 * so all DK31* drives are quirked here.
517 * Submitted by: Paul Haddad <paul@pth.com>
519 { T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "DK31*", "*" },
520 CAM_QUIRK_NOLUNS, /*mintags*/2, /*maxtags*/255
524 * The Hitachi CJ series with J8A8 firmware apparantly has
525 * problems with tagged commands.
527 * Reported by: amagai@nue.org
529 { T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "DK32CJ*", "J8A8" },
530 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
534 * These are the large storage arrays.
535 * Submitted by: William Carrel <william.carrel@infospace.com>
537 { T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "OPEN*", "*" },
538 CAM_QUIRK_HILUNS, 2, 1024
542 * This old revision of the TDC3600 is also SCSI-1, and
543 * hangs upon serial number probing.
546 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
549 CAM_QUIRK_NOSERIAL, /*mintags*/0, /*maxtags*/0
553 * Would repond to all LUNs if asked for.
556 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "CALIPER",
559 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
563 * Would repond to all LUNs if asked for.
566 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY",
569 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
572 /* Submitted by: Matthew Dodd <winter@jurai.net> */
573 { T_PROCESSOR, SIP_MEDIA_FIXED, "Cabletrn", "EA41*", "*" },
574 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
577 /* Submitted by: Matthew Dodd <winter@jurai.net> */
578 { T_PROCESSOR, SIP_MEDIA_FIXED, "CABLETRN", "EA41*", "*" },
579 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
582 /* TeraSolutions special settings for TRC-22 RAID */
583 { T_DIRECT, SIP_MEDIA_FIXED, "TERASOLU", "TRC-22", "*" },
584 /*quirks*/0, /*mintags*/55, /*maxtags*/255
587 /* Veritas Storage Appliance */
588 { T_DIRECT, SIP_MEDIA_FIXED, "VERITAS", "*", "*" },
589 CAM_QUIRK_HILUNS, /*mintags*/2, /*maxtags*/1024
593 * Would respond to all LUNs. Device type and removable
594 * flag are jumper-selectable.
596 { T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED, "MaxOptix",
599 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
602 /* EasyRAID E5A aka. areca ARC-6010 */
603 { T_DIRECT, SIP_MEDIA_FIXED, "easyRAID", "*", "*" },
604 CAM_QUIRK_NOHILUNS, /*mintags*/2, /*maxtags*/255
607 { T_ENCLOSURE, SIP_MEDIA_FIXED, "DP", "BACKPLANE", "*" },
608 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
611 /* Default tagged queuing parameters for all devices */
613 T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED,
614 /*vendor*/"*", /*product*/"*", /*revision*/"*"
616 /*quirks*/0, /*mintags*/2, /*maxtags*/255
620 static const int xpt_quirk_table_size =
621 sizeof(xpt_quirk_table) / sizeof(*xpt_quirk_table);
625 DM_RET_FLAG_MASK = 0x0f,
628 DM_RET_DESCEND = 0x20,
630 DM_RET_ACTION_MASK = 0xf0
638 } xpt_traverse_depth;
640 struct xpt_traverse_config {
641 xpt_traverse_depth depth;
646 typedef int xpt_busfunc_t (struct cam_eb *bus, void *arg);
647 typedef int xpt_targetfunc_t (struct cam_et *target, void *arg);
648 typedef int xpt_devicefunc_t (struct cam_ed *device, void *arg);
649 typedef int xpt_periphfunc_t (struct cam_periph *periph, void *arg);
650 typedef int xpt_pdrvfunc_t (struct periph_driver **pdrv, void *arg);
652 /* Transport layer configuration information */
653 static struct xpt_softc xsoftc;
655 /* Queues for our software interrupt handler */
656 typedef TAILQ_HEAD(cam_isrq, ccb_hdr) cam_isrq_t;
657 typedef TAILQ_HEAD(cam_simq, cam_sim) cam_simq_t;
658 static cam_simq_t cam_simq;
659 static struct spinlock cam_simq_spin;
661 struct cam_periph *xpt_periph;
663 static periph_init_t xpt_periph_init;
665 static periph_init_t probe_periph_init;
667 static struct periph_driver xpt_driver =
669 xpt_periph_init, "xpt",
670 TAILQ_HEAD_INITIALIZER(xpt_driver.units)
673 static struct periph_driver probe_driver =
675 probe_periph_init, "probe",
676 TAILQ_HEAD_INITIALIZER(probe_driver.units)
679 PERIPHDRIVER_DECLARE(xpt, xpt_driver);
680 PERIPHDRIVER_DECLARE(probe, probe_driver);
682 #define XPT_CDEV_MAJOR 104
684 static d_open_t xptopen;
685 static d_close_t xptclose;
686 static d_ioctl_t xptioctl;
688 static struct dev_ops xpt_ops = {
689 { "xpt", XPT_CDEV_MAJOR, 0 },
695 static void dead_sim_action(struct cam_sim *sim, union ccb *ccb);
696 static void dead_sim_poll(struct cam_sim *sim);
698 /* Dummy SIM that is used when the real one has gone. */
699 static struct cam_sim cam_dead_sim;
700 static struct lock cam_dead_lock;
702 /* Storage for debugging datastructures */
704 struct cam_path *cam_dpath;
705 u_int32_t cam_dflags;
706 u_int32_t cam_debug_delay;
709 #if defined(CAM_DEBUG_FLAGS) && !defined(CAMDEBUG)
710 #error "You must have options CAMDEBUG to use options CAM_DEBUG_FLAGS"
714 * In order to enable the CAM_DEBUG_* options, the user must have CAMDEBUG
715 * enabled. Also, the user must have either none, or all of CAM_DEBUG_BUS,
716 * CAM_DEBUG_TARGET, and CAM_DEBUG_LUN specified.
718 #if defined(CAM_DEBUG_BUS) || defined(CAM_DEBUG_TARGET) \
719 || defined(CAM_DEBUG_LUN)
721 #if !defined(CAM_DEBUG_BUS) || !defined(CAM_DEBUG_TARGET) \
722 || !defined(CAM_DEBUG_LUN)
723 #error "You must define all or none of CAM_DEBUG_BUS, CAM_DEBUG_TARGET \
725 #endif /* !CAM_DEBUG_BUS || !CAM_DEBUG_TARGET || !CAM_DEBUG_LUN */
726 #else /* !CAMDEBUG */
727 #error "You must use options CAMDEBUG if you use the CAM_DEBUG_* options"
728 #endif /* CAMDEBUG */
729 #endif /* CAM_DEBUG_BUS || CAM_DEBUG_TARGET || CAM_DEBUG_LUN */
731 /* Our boot-time initialization hook */
732 static int cam_module_event_handler(module_t, int /*modeventtype_t*/, void *);
734 static moduledata_t cam_moduledata = {
736 cam_module_event_handler,
740 static int xpt_init(void *);
742 DECLARE_MODULE(cam, cam_moduledata, SI_SUB_CONFIGURE, SI_ORDER_SECOND);
743 MODULE_VERSION(cam, 1);
746 static cam_status xpt_compile_path(struct cam_path *new_path,
747 struct cam_periph *perph,
749 target_id_t target_id,
752 static void xpt_release_path(struct cam_path *path);
754 static void xpt_async_bcast(struct async_list *async_head,
755 u_int32_t async_code,
756 struct cam_path *path,
758 static void xpt_dev_async(u_int32_t async_code,
760 struct cam_et *target,
761 struct cam_ed *device,
763 static path_id_t xptnextfreepathid(void);
764 static path_id_t xptpathid(const char *sim_name, int sim_unit, int sim_bus);
765 static union ccb *xpt_get_ccb(struct cam_ed *device);
766 static int xpt_schedule_dev(struct camq *queue, cam_pinfo *dev_pinfo,
767 u_int32_t new_priority);
768 static void xpt_run_dev_allocq(struct cam_eb *bus);
769 static void xpt_run_dev_sendq(struct cam_eb *bus);
770 static timeout_t xpt_release_devq_timeout;
771 static void xpt_release_bus(struct cam_eb *bus);
772 static void xpt_release_devq_device(struct cam_ed *dev, u_int count,
774 static struct cam_et*
775 xpt_alloc_target(struct cam_eb *bus, target_id_t target_id);
776 static void xpt_release_target(struct cam_eb *bus, struct cam_et *target);
777 static struct cam_ed*
778 xpt_alloc_device(struct cam_eb *bus, struct cam_et *target,
780 static void xpt_release_device(struct cam_eb *bus, struct cam_et *target,
781 struct cam_ed *device);
782 static u_int32_t xpt_dev_ccbq_resize(struct cam_path *path, int newopenings);
783 static struct cam_eb*
784 xpt_find_bus(path_id_t path_id);
785 static struct cam_et*
786 xpt_find_target(struct cam_eb *bus, target_id_t target_id);
787 static struct cam_ed*
788 xpt_find_device(struct cam_et *target, lun_id_t lun_id);
789 static void xpt_scan_bus(struct cam_periph *periph, union ccb *ccb);
790 static void xpt_scan_lun(struct cam_periph *periph,
791 struct cam_path *path, cam_flags flags,
793 static void xptscandone(struct cam_periph *periph, union ccb *done_ccb);
794 static xpt_busfunc_t xptconfigbuscountfunc;
795 static xpt_busfunc_t xptconfigfunc;
796 static void xpt_config(void *arg);
797 static xpt_devicefunc_t xptpassannouncefunc;
798 static void xpt_finishconfig(struct cam_periph *periph, union ccb *ccb);
799 static void xptaction(struct cam_sim *sim, union ccb *work_ccb);
800 static void xptpoll(struct cam_sim *sim);
801 static inthand2_t swi_cambio;
802 static void camisr(void *);
803 static void camisr_runqueue(struct cam_sim *);
804 static dev_match_ret xptbusmatch(struct dev_match_pattern *patterns,
805 u_int num_patterns, struct cam_eb *bus);
806 static dev_match_ret xptdevicematch(struct dev_match_pattern *patterns,
808 struct cam_ed *device);
809 static dev_match_ret xptperiphmatch(struct dev_match_pattern *patterns,
811 struct cam_periph *periph);
812 static xpt_busfunc_t xptedtbusfunc;
813 static xpt_targetfunc_t xptedttargetfunc;
814 static xpt_devicefunc_t xptedtdevicefunc;
815 static xpt_periphfunc_t xptedtperiphfunc;
816 static xpt_pdrvfunc_t xptplistpdrvfunc;
817 static xpt_periphfunc_t xptplistperiphfunc;
818 static int xptedtmatch(struct ccb_dev_match *cdm);
819 static int xptperiphlistmatch(struct ccb_dev_match *cdm);
820 static int xptbustraverse(struct cam_eb *start_bus,
821 xpt_busfunc_t *tr_func, void *arg);
822 static int xpttargettraverse(struct cam_eb *bus,
823 struct cam_et *start_target,
824 xpt_targetfunc_t *tr_func, void *arg);
825 static int xptdevicetraverse(struct cam_et *target,
826 struct cam_ed *start_device,
827 xpt_devicefunc_t *tr_func, void *arg);
828 static int xptperiphtraverse(struct cam_ed *device,
829 struct cam_periph *start_periph,
830 xpt_periphfunc_t *tr_func, void *arg);
831 static int xptpdrvtraverse(struct periph_driver **start_pdrv,
832 xpt_pdrvfunc_t *tr_func, void *arg);
833 static int xptpdperiphtraverse(struct periph_driver **pdrv,
834 struct cam_periph *start_periph,
835 xpt_periphfunc_t *tr_func,
837 static xpt_busfunc_t xptdefbusfunc;
838 static xpt_targetfunc_t xptdeftargetfunc;
839 static xpt_devicefunc_t xptdefdevicefunc;
840 static xpt_periphfunc_t xptdefperiphfunc;
841 static int xpt_for_all_busses(xpt_busfunc_t *tr_func, void *arg);
842 static int xpt_for_all_devices(xpt_devicefunc_t *tr_func,
844 static xpt_devicefunc_t xptsetasyncfunc;
845 static xpt_busfunc_t xptsetasyncbusfunc;
846 static cam_status xptregister(struct cam_periph *periph,
848 static cam_status proberegister(struct cam_periph *periph,
850 static void probeschedule(struct cam_periph *probe_periph);
851 static void probestart(struct cam_periph *periph, union ccb *start_ccb);
852 static void proberequestdefaultnegotiation(struct cam_periph *periph);
853 static int proberequestbackoff(struct cam_periph *periph,
854 struct cam_ed *device);
855 static void probedone(struct cam_periph *periph, union ccb *done_ccb);
856 static void probecleanup(struct cam_periph *periph);
857 static void xpt_find_quirk(struct cam_ed *device);
858 static void xpt_devise_transport(struct cam_path *path);
859 static void xpt_set_transfer_settings(struct ccb_trans_settings *cts,
860 struct cam_ed *device,
862 static void xpt_toggle_tags(struct cam_path *path);
863 static void xpt_start_tags(struct cam_path *path);
864 static __inline int xpt_schedule_dev_allocq(struct cam_eb *bus,
866 static __inline int xpt_schedule_dev_sendq(struct cam_eb *bus,
868 static __inline int periph_is_queued(struct cam_periph *periph);
869 static __inline int device_is_alloc_queued(struct cam_ed *device);
870 static __inline int device_is_send_queued(struct cam_ed *device);
871 static __inline int dev_allocq_is_runnable(struct cam_devq *devq);
874 xpt_schedule_dev_allocq(struct cam_eb *bus, struct cam_ed *dev)
878 if (bus->sim->devq && dev->ccbq.devq_openings > 0) {
879 if ((dev->flags & CAM_DEV_RESIZE_QUEUE_NEEDED) != 0) {
880 cam_ccbq_resize(&dev->ccbq,
881 dev->ccbq.dev_openings
882 + dev->ccbq.dev_active);
883 dev->flags &= ~CAM_DEV_RESIZE_QUEUE_NEEDED;
886 * The priority of a device waiting for CCB resources
887 * is that of the the highest priority peripheral driver
890 retval = xpt_schedule_dev(&bus->sim->devq->alloc_queue,
891 &dev->alloc_ccb_entry.pinfo,
892 CAMQ_GET_HEAD(&dev->drvq)->priority);
901 xpt_schedule_dev_sendq(struct cam_eb *bus, struct cam_ed *dev)
905 if (bus->sim->devq && dev->ccbq.dev_openings > 0) {
907 * The priority of a device waiting for controller
908 * resources is that of the the highest priority CCB
912 xpt_schedule_dev(&bus->sim->devq->send_queue,
913 &dev->send_ccb_entry.pinfo,
914 CAMQ_GET_HEAD(&dev->ccbq.queue)->priority);
922 periph_is_queued(struct cam_periph *periph)
924 return (periph->pinfo.index != CAM_UNQUEUED_INDEX);
928 device_is_alloc_queued(struct cam_ed *device)
930 return (device->alloc_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX);
934 device_is_send_queued(struct cam_ed *device)
936 return (device->send_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX);
940 dev_allocq_is_runnable(struct cam_devq *devq)
944 * Have space to do more work.
945 * Allowed to do work.
947 return ((devq->alloc_queue.qfrozen_cnt == 0)
948 && (devq->alloc_queue.entries > 0)
949 && (devq->alloc_openings > 0));
953 xpt_periph_init(void)
955 dev_ops_add(&xpt_ops, 0, 0);
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)
1385 /* thread to handle bus rescans */
1387 xpt_scanner_thread(void *dummy)
1391 struct cam_sim *sim;
1395 * Wait for a rescan request to come in. When it does, splice
1396 * it onto a queue from local storage so that the xpt lock
1397 * doesn't need to be held while the requests are being
1401 tsleep_interlock(&xsoftc.ccb_scanq);
1403 tsleep(&xsoftc.ccb_scanq, 0, "ccb_scanq", 0);
1407 TAILQ_CONCAT(&queue, &xsoftc.ccb_scanq, sim_links.tqe);
1410 while ((ccb = (union ccb *)TAILQ_FIRST(&queue)) != NULL) {
1411 TAILQ_REMOVE(&queue, &ccb->ccb_h, sim_links.tqe);
1413 sim = ccb->ccb_h.path->bus->sim;
1416 ccb->ccb_h.func_code = XPT_SCAN_BUS;
1417 ccb->ccb_h.cbfcnp = xptdone;
1418 xpt_setup_ccb(&ccb->ccb_h, ccb->ccb_h.path, 5);
1419 cam_periph_runccb(ccb, NULL, 0, 0, NULL);
1420 xpt_free_path(ccb->ccb_h.path);
1422 CAM_SIM_UNLOCK(sim);
1428 xpt_rescan(union ccb *ccb)
1430 struct ccb_hdr *hdr;
1433 * Don't make duplicate entries for the same paths.
1436 TAILQ_FOREACH(hdr, &xsoftc.ccb_scanq, sim_links.tqe) {
1437 if (xpt_path_comp(hdr->path, ccb->ccb_h.path) == 0) {
1439 xpt_print(ccb->ccb_h.path, "rescan already queued\n");
1440 xpt_free_path(ccb->ccb_h.path);
1445 TAILQ_INSERT_TAIL(&xsoftc.ccb_scanq, &ccb->ccb_h, sim_links.tqe);
1446 wakeup(&xsoftc.ccb_scanq);
1451 /* Functions accessed by the peripheral drivers */
1453 xpt_init(void *dummy)
1455 struct cam_sim *xpt_sim;
1456 struct cam_path *path;
1457 struct cam_devq *devq;
1460 TAILQ_INIT(&xsoftc.xpt_busses);
1461 TAILQ_INIT(&cam_simq);
1462 TAILQ_INIT(&xsoftc.ccb_scanq);
1463 STAILQ_INIT(&xsoftc.highpowerq);
1464 xsoftc.num_highpower = CAM_MAX_HIGHPOWER;
1466 spin_init(&cam_simq_spin);
1467 lockinit(&xsoftc.xpt_lock, "XPT lock", 0, LK_CANRECURSE);
1468 lockinit(&xsoftc.xpt_topo_lock, "XPT topology lock", 0, LK_CANRECURSE);
1470 SLIST_INIT(&cam_dead_sim.ccb_freeq);
1471 TAILQ_INIT(&cam_dead_sim.sim_doneq);
1472 spin_init(&cam_dead_sim.sim_spin);
1473 cam_dead_sim.sim_action = dead_sim_action;
1474 cam_dead_sim.sim_poll = dead_sim_poll;
1475 cam_dead_sim.sim_name = "dead_sim";
1476 cam_dead_sim.lock = &cam_dead_lock;
1477 lockinit(&cam_dead_lock, "XPT dead_sim lock", 0, LK_CANRECURSE);
1478 cam_dead_sim.flags |= CAM_SIM_DEREGISTERED;
1481 * The xpt layer is, itself, the equivelent of a SIM.
1482 * Allow 16 ccbs in the ccb pool for it. This should
1483 * give decent parallelism when we probe busses and
1484 * perform other XPT functions.
1486 devq = cam_simq_alloc(16);
1487 xpt_sim = cam_sim_alloc(xptaction,
1492 /*lock*/&xsoftc.xpt_lock,
1493 /*max_dev_transactions*/0,
1494 /*max_tagged_dev_transactions*/0,
1496 cam_simq_release(devq);
1497 if (xpt_sim == NULL)
1500 xpt_sim->max_ccbs = 16;
1502 lockmgr(&xsoftc.xpt_lock, LK_EXCLUSIVE);
1503 if ((status = xpt_bus_register(xpt_sim, /*bus #*/0)) != CAM_SUCCESS) {
1504 kprintf("xpt_init: xpt_bus_register failed with status %#x,"
1505 " failing attach\n", status);
1510 * Looking at the XPT from the SIM layer, the XPT is
1511 * the equivelent of a peripheral driver. Allocate
1512 * a peripheral driver entry for us.
1514 if ((status = xpt_create_path(&path, NULL, CAM_XPT_PATH_ID,
1515 CAM_TARGET_WILDCARD,
1516 CAM_LUN_WILDCARD)) != CAM_REQ_CMP) {
1517 kprintf("xpt_init: xpt_create_path failed with status %#x,"
1518 " failing attach\n", status);
1522 cam_periph_alloc(xptregister, NULL, NULL, NULL, "xpt", CAM_PERIPH_BIO,
1523 path, NULL, 0, xpt_sim);
1524 xpt_free_path(path);
1526 lockmgr(&xsoftc.xpt_lock, LK_RELEASE);
1529 * Register a callback for when interrupts are enabled.
1531 xsoftc.xpt_config_hook = kmalloc(sizeof(struct intr_config_hook),
1532 M_CAMXPT, M_INTWAIT | M_ZERO);
1533 xsoftc.xpt_config_hook->ich_func = xpt_config;
1534 xsoftc.xpt_config_hook->ich_desc = "xpt";
1535 xsoftc.xpt_config_hook->ich_order = 1000;
1536 if (config_intrhook_establish(xsoftc.xpt_config_hook) != 0) {
1537 kfree (xsoftc.xpt_config_hook, M_CAMXPT);
1538 kprintf("xpt_init: config_intrhook_establish failed "
1539 "- failing attach\n");
1542 /* fire up rescan thread */
1543 if (kthread_create(xpt_scanner_thread, NULL, NULL, "xpt_thrd")) {
1544 kprintf("xpt_init: failed to create rescan thread\n");
1546 /* Install our software interrupt handlers */
1547 register_swi(SWI_CAMBIO, swi_cambio, NULL, "swi_cambio", NULL);
1553 xptregister(struct cam_periph *periph, void *arg)
1555 struct cam_sim *xpt_sim;
1557 if (periph == NULL) {
1558 kprintf("xptregister: periph was NULL!!\n");
1559 return(CAM_REQ_CMP_ERR);
1562 xpt_sim = (struct cam_sim *)arg;
1563 xpt_sim->softc = periph;
1564 xpt_periph = periph;
1565 periph->softc = NULL;
1567 return(CAM_REQ_CMP);
1571 xpt_add_periph(struct cam_periph *periph)
1573 struct cam_ed *device;
1575 struct periph_list *periph_head;
1577 sim_lock_assert_owned(periph->sim->lock);
1579 device = periph->path->device;
1581 periph_head = &device->periphs;
1583 status = CAM_REQ_CMP;
1585 if (device != NULL) {
1587 * Make room for this peripheral
1588 * so it will fit in the queue
1589 * when it's scheduled to run
1591 status = camq_resize(&device->drvq,
1592 device->drvq.array_size + 1);
1594 device->generation++;
1596 SLIST_INSERT_HEAD(periph_head, periph, periph_links);
1599 lockmgr(&xsoftc.xpt_topo_lock, LK_EXCLUSIVE);
1600 xsoftc.xpt_generation++;
1601 lockmgr(&xsoftc.xpt_topo_lock, LK_RELEASE);
1607 xpt_remove_periph(struct cam_periph *periph)
1609 struct cam_ed *device;
1611 sim_lock_assert_owned(periph->sim->lock);
1613 device = periph->path->device;
1615 if (device != NULL) {
1616 struct periph_list *periph_head;
1618 periph_head = &device->periphs;
1620 /* Release the slot for this peripheral */
1621 camq_resize(&device->drvq, device->drvq.array_size - 1);
1623 device->generation++;
1625 SLIST_REMOVE(periph_head, periph, cam_periph, periph_links);
1628 lockmgr(&xsoftc.xpt_topo_lock, LK_EXCLUSIVE);
1629 xsoftc.xpt_generation++;
1630 lockmgr(&xsoftc.xpt_topo_lock, LK_RELEASE);
1634 xpt_announce_periph(struct cam_periph *periph, char *announce_string)
1636 struct ccb_pathinq cpi;
1637 struct ccb_trans_settings cts;
1638 struct cam_path *path;
1643 sim_lock_assert_owned(periph->sim->lock);
1645 path = periph->path;
1647 * To ensure that this is printed in one piece,
1648 * mask out CAM interrupts.
1650 kprintf("%s%d at %s%d bus %d target %d lun %d\n",
1651 periph->periph_name, periph->unit_number,
1652 path->bus->sim->sim_name,
1653 path->bus->sim->unit_number,
1654 path->bus->sim->bus_id,
1655 path->target->target_id,
1656 path->device->lun_id);
1657 kprintf("%s%d: ", periph->periph_name, periph->unit_number);
1658 scsi_print_inquiry(&path->device->inq_data);
1659 if (bootverbose && path->device->serial_num_len > 0) {
1660 /* Don't wrap the screen - print only the first 60 chars */
1661 kprintf("%s%d: Serial Number %.60s\n", periph->periph_name,
1662 periph->unit_number, path->device->serial_num);
1664 xpt_setup_ccb(&cts.ccb_h, path, /*priority*/1);
1665 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
1666 cts.type = CTS_TYPE_CURRENT_SETTINGS;
1667 xpt_action((union ccb*)&cts);
1668 if ((cts.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1672 /* Ask the SIM for its base transfer speed */
1673 xpt_setup_ccb(&cpi.ccb_h, path, /*priority*/1);
1674 cpi.ccb_h.func_code = XPT_PATH_INQ;
1675 xpt_action((union ccb *)&cpi);
1677 speed = cpi.base_transfer_speed;
1679 if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_SPI) {
1680 struct ccb_trans_settings_spi *spi;
1682 spi = &cts.xport_specific.spi;
1683 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) != 0
1684 && spi->sync_offset != 0) {
1685 freq = scsi_calc_syncsrate(spi->sync_period);
1689 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0)
1690 speed *= (0x01 << spi->bus_width);
1692 if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_FC) {
1693 struct ccb_trans_settings_fc *fc = &cts.xport_specific.fc;
1694 if (fc->valid & CTS_FC_VALID_SPEED) {
1695 speed = fc->bitrate;
1699 if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_SAS) {
1700 struct ccb_trans_settings_sas *sas = &cts.xport_specific.sas;
1701 if (sas->valid & CTS_SAS_VALID_SPEED) {
1702 speed = sas->bitrate;
1708 kprintf("%s%d: %d.%03dMB/s transfers",
1709 periph->periph_name, periph->unit_number,
1712 kprintf("%s%d: %dKB/s transfers", periph->periph_name,
1713 periph->unit_number, speed);
1714 /* Report additional information about SPI connections */
1715 if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_SPI) {
1716 struct ccb_trans_settings_spi *spi;
1718 spi = &cts.xport_specific.spi;
1720 kprintf(" (%d.%03dMHz%s, offset %d", freq / 1000,
1722 (spi->ppr_options & MSG_EXT_PPR_DT_REQ) != 0
1726 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0
1727 && spi->bus_width > 0) {
1733 kprintf("%dbit)", 8 * (0x01 << spi->bus_width));
1734 } else if (freq != 0) {
1738 if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_FC) {
1739 struct ccb_trans_settings_fc *fc;
1741 fc = &cts.xport_specific.fc;
1742 if (fc->valid & CTS_FC_VALID_WWNN)
1743 kprintf(" WWNN 0x%llx", (long long) fc->wwnn);
1744 if (fc->valid & CTS_FC_VALID_WWPN)
1745 kprintf(" WWPN 0x%llx", (long long) fc->wwpn);
1746 if (fc->valid & CTS_FC_VALID_PORT)
1747 kprintf(" PortID 0x%x", fc->port);
1750 if (path->device->inq_flags & SID_CmdQue
1751 || path->device->flags & CAM_DEV_TAG_AFTER_COUNT) {
1752 kprintf("\n%s%d: Command Queueing Enabled",
1753 periph->periph_name, periph->unit_number);
1758 * We only want to print the caller's announce string if they've
1761 if (announce_string != NULL)
1762 kprintf("%s%d: %s\n", periph->periph_name,
1763 periph->unit_number, announce_string);
1766 static dev_match_ret
1767 xptbusmatch(struct dev_match_pattern *patterns, u_int num_patterns,
1770 dev_match_ret retval;
1773 retval = DM_RET_NONE;
1776 * If we aren't given something to match against, that's an error.
1779 return(DM_RET_ERROR);
1782 * If there are no match entries, then this bus matches no
1785 if ((patterns == NULL) || (num_patterns == 0))
1786 return(DM_RET_DESCEND | DM_RET_COPY);
1788 for (i = 0; i < num_patterns; i++) {
1789 struct bus_match_pattern *cur_pattern;
1792 * If the pattern in question isn't for a bus node, we
1793 * aren't interested. However, we do indicate to the
1794 * calling routine that we should continue descending the
1795 * tree, since the user wants to match against lower-level
1798 if (patterns[i].type != DEV_MATCH_BUS) {
1799 if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)
1800 retval |= DM_RET_DESCEND;
1804 cur_pattern = &patterns[i].pattern.bus_pattern;
1807 * If they want to match any bus node, we give them any
1810 if (cur_pattern->flags == BUS_MATCH_ANY) {
1811 /* set the copy flag */
1812 retval |= DM_RET_COPY;
1815 * If we've already decided on an action, go ahead
1818 if ((retval & DM_RET_ACTION_MASK) != DM_RET_NONE)
1823 * Not sure why someone would do this...
1825 if (cur_pattern->flags == BUS_MATCH_NONE)
1828 if (((cur_pattern->flags & BUS_MATCH_PATH) != 0)
1829 && (cur_pattern->path_id != bus->path_id))
1832 if (((cur_pattern->flags & BUS_MATCH_BUS_ID) != 0)
1833 && (cur_pattern->bus_id != bus->sim->bus_id))
1836 if (((cur_pattern->flags & BUS_MATCH_UNIT) != 0)
1837 && (cur_pattern->unit_number != bus->sim->unit_number))
1840 if (((cur_pattern->flags & BUS_MATCH_NAME) != 0)
1841 && (strncmp(cur_pattern->dev_name, bus->sim->sim_name,
1846 * If we get to this point, the user definitely wants
1847 * information on this bus. So tell the caller to copy the
1850 retval |= DM_RET_COPY;
1853 * If the return action has been set to descend, then we
1854 * know that we've already seen a non-bus matching
1855 * expression, therefore we need to further descend the tree.
1856 * This won't change by continuing around the loop, so we
1857 * go ahead and return. If we haven't seen a non-bus
1858 * matching expression, we keep going around the loop until
1859 * we exhaust the matching expressions. We'll set the stop
1860 * flag once we fall out of the loop.
1862 if ((retval & DM_RET_ACTION_MASK) == DM_RET_DESCEND)
1867 * If the return action hasn't been set to descend yet, that means
1868 * we haven't seen anything other than bus matching patterns. So
1869 * tell the caller to stop descending the tree -- the user doesn't
1870 * want to match against lower level tree elements.
1872 if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)
1873 retval |= DM_RET_STOP;
1878 static dev_match_ret
1879 xptdevicematch(struct dev_match_pattern *patterns, u_int num_patterns,
1880 struct cam_ed *device)
1882 dev_match_ret retval;
1885 retval = DM_RET_NONE;
1888 * If we aren't given something to match against, that's an error.
1891 return(DM_RET_ERROR);
1894 * If there are no match entries, then this device matches no
1897 if ((patterns == NULL) || (num_patterns == 0))
1898 return(DM_RET_DESCEND | DM_RET_COPY);
1900 for (i = 0; i < num_patterns; i++) {
1901 struct device_match_pattern *cur_pattern;
1904 * If the pattern in question isn't for a device node, we
1905 * aren't interested.
1907 if (patterns[i].type != DEV_MATCH_DEVICE) {
1908 if ((patterns[i].type == DEV_MATCH_PERIPH)
1909 && ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE))
1910 retval |= DM_RET_DESCEND;
1914 cur_pattern = &patterns[i].pattern.device_pattern;
1917 * If they want to match any device node, we give them any
1920 if (cur_pattern->flags == DEV_MATCH_ANY) {
1921 /* set the copy flag */
1922 retval |= DM_RET_COPY;
1926 * If we've already decided on an action, go ahead
1929 if ((retval & DM_RET_ACTION_MASK) != DM_RET_NONE)
1934 * Not sure why someone would do this...
1936 if (cur_pattern->flags == DEV_MATCH_NONE)
1939 if (((cur_pattern->flags & DEV_MATCH_PATH) != 0)
1940 && (cur_pattern->path_id != device->target->bus->path_id))
1943 if (((cur_pattern->flags & DEV_MATCH_TARGET) != 0)
1944 && (cur_pattern->target_id != device->target->target_id))
1947 if (((cur_pattern->flags & DEV_MATCH_LUN) != 0)
1948 && (cur_pattern->target_lun != device->lun_id))
1951 if (((cur_pattern->flags & DEV_MATCH_INQUIRY) != 0)
1952 && (cam_quirkmatch((caddr_t)&device->inq_data,
1953 (caddr_t)&cur_pattern->inq_pat,
1954 1, sizeof(cur_pattern->inq_pat),
1955 scsi_static_inquiry_match) == NULL))
1959 * If we get to this point, the user definitely wants
1960 * information on this device. So tell the caller to copy
1963 retval |= DM_RET_COPY;
1966 * If the return action has been set to descend, then we
1967 * know that we've already seen a peripheral matching
1968 * expression, therefore we need to further descend the tree.
1969 * This won't change by continuing around the loop, so we
1970 * go ahead and return. If we haven't seen a peripheral
1971 * matching expression, we keep going around the loop until
1972 * we exhaust the matching expressions. We'll set the stop
1973 * flag once we fall out of the loop.
1975 if ((retval & DM_RET_ACTION_MASK) == DM_RET_DESCEND)
1980 * If the return action hasn't been set to descend yet, that means
1981 * we haven't seen any peripheral matching patterns. So tell the
1982 * caller to stop descending the tree -- the user doesn't want to
1983 * match against lower level tree elements.
1985 if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)
1986 retval |= DM_RET_STOP;
1992 * Match a single peripheral against any number of match patterns.
1994 static dev_match_ret
1995 xptperiphmatch(struct dev_match_pattern *patterns, u_int num_patterns,
1996 struct cam_periph *periph)
1998 dev_match_ret retval;
2002 * If we aren't given something to match against, that's an error.
2005 return(DM_RET_ERROR);
2008 * If there are no match entries, then this peripheral matches no
2011 if ((patterns == NULL) || (num_patterns == 0))
2012 return(DM_RET_STOP | DM_RET_COPY);
2015 * There aren't any nodes below a peripheral node, so there's no
2016 * reason to descend the tree any further.
2018 retval = DM_RET_STOP;
2020 for (i = 0; i < num_patterns; i++) {
2021 struct periph_match_pattern *cur_pattern;
2024 * If the pattern in question isn't for a peripheral, we
2025 * aren't interested.
2027 if (patterns[i].type != DEV_MATCH_PERIPH)
2030 cur_pattern = &patterns[i].pattern.periph_pattern;
2033 * If they want to match on anything, then we will do so.
2035 if (cur_pattern->flags == PERIPH_MATCH_ANY) {
2036 /* set the copy flag */
2037 retval |= DM_RET_COPY;
2040 * We've already set the return action to stop,
2041 * since there are no nodes below peripherals in
2048 * Not sure why someone would do this...
2050 if (cur_pattern->flags == PERIPH_MATCH_NONE)
2053 if (((cur_pattern->flags & PERIPH_MATCH_PATH) != 0)
2054 && (cur_pattern->path_id != periph->path->bus->path_id))
2058 * For the target and lun id's, we have to make sure the
2059 * target and lun pointers aren't NULL. The xpt peripheral
2060 * has a wildcard target and device.
2062 if (((cur_pattern->flags & PERIPH_MATCH_TARGET) != 0)
2063 && ((periph->path->target == NULL)
2064 ||(cur_pattern->target_id != periph->path->target->target_id)))
2067 if (((cur_pattern->flags & PERIPH_MATCH_LUN) != 0)
2068 && ((periph->path->device == NULL)
2069 || (cur_pattern->target_lun != periph->path->device->lun_id)))
2072 if (((cur_pattern->flags & PERIPH_MATCH_UNIT) != 0)
2073 && (cur_pattern->unit_number != periph->unit_number))
2076 if (((cur_pattern->flags & PERIPH_MATCH_NAME) != 0)
2077 && (strncmp(cur_pattern->periph_name, periph->periph_name,
2082 * If we get to this point, the user definitely wants
2083 * information on this peripheral. So tell the caller to
2084 * copy the data out.
2086 retval |= DM_RET_COPY;
2089 * The return action has already been set to stop, since
2090 * peripherals don't have any nodes below them in the EDT.
2096 * If we get to this point, the peripheral that was passed in
2097 * doesn't match any of the patterns.
2103 xptedtbusfunc(struct cam_eb *bus, void *arg)
2105 struct ccb_dev_match *cdm;
2106 dev_match_ret retval;
2108 cdm = (struct ccb_dev_match *)arg;
2111 * If our position is for something deeper in the tree, that means
2112 * that we've already seen this node. So, we keep going down.
2114 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2115 && (cdm->pos.cookie.bus == bus)
2116 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2117 && (cdm->pos.cookie.target != NULL))
2118 retval = DM_RET_DESCEND;
2120 retval = xptbusmatch(cdm->patterns, cdm->num_patterns, bus);
2123 * If we got an error, bail out of the search.
2125 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
2126 cdm->status = CAM_DEV_MATCH_ERROR;
2131 * If the copy flag is set, copy this bus out.
2133 if (retval & DM_RET_COPY) {
2136 spaceleft = cdm->match_buf_len - (cdm->num_matches *
2137 sizeof(struct dev_match_result));
2140 * If we don't have enough space to put in another
2141 * match result, save our position and tell the
2142 * user there are more devices to check.
2144 if (spaceleft < sizeof(struct dev_match_result)) {
2145 bzero(&cdm->pos, sizeof(cdm->pos));
2146 cdm->pos.position_type =
2147 CAM_DEV_POS_EDT | CAM_DEV_POS_BUS;
2149 cdm->pos.cookie.bus = bus;
2150 cdm->pos.generations[CAM_BUS_GENERATION]=
2151 xsoftc.bus_generation;
2152 cdm->status = CAM_DEV_MATCH_MORE;
2155 j = cdm->num_matches;
2157 cdm->matches[j].type = DEV_MATCH_BUS;
2158 cdm->matches[j].result.bus_result.path_id = bus->path_id;
2159 cdm->matches[j].result.bus_result.bus_id = bus->sim->bus_id;
2160 cdm->matches[j].result.bus_result.unit_number =
2161 bus->sim->unit_number;
2162 strncpy(cdm->matches[j].result.bus_result.dev_name,
2163 bus->sim->sim_name, DEV_IDLEN);
2167 * If the user is only interested in busses, there's no
2168 * reason to descend to the next level in the tree.
2170 if ((retval & DM_RET_ACTION_MASK) == DM_RET_STOP)
2174 * If there is a target generation recorded, check it to
2175 * make sure the target list hasn't changed.
2177 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2178 && (bus == cdm->pos.cookie.bus)
2179 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2180 && (cdm->pos.generations[CAM_TARGET_GENERATION] != 0)
2181 && (cdm->pos.generations[CAM_TARGET_GENERATION] !=
2183 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2187 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2188 && (cdm->pos.cookie.bus == bus)
2189 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2190 && (cdm->pos.cookie.target != NULL))
2191 return(xpttargettraverse(bus,
2192 (struct cam_et *)cdm->pos.cookie.target,
2193 xptedttargetfunc, arg));
2195 return(xpttargettraverse(bus, NULL, xptedttargetfunc, arg));
2199 xptedttargetfunc(struct cam_et *target, void *arg)
2201 struct ccb_dev_match *cdm;
2203 cdm = (struct ccb_dev_match *)arg;
2206 * If there is a device list generation recorded, check it to
2207 * make sure the device list hasn't changed.
2209 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2210 && (cdm->pos.cookie.bus == target->bus)
2211 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2212 && (cdm->pos.cookie.target == target)
2213 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2214 && (cdm->pos.generations[CAM_DEV_GENERATION] != 0)
2215 && (cdm->pos.generations[CAM_DEV_GENERATION] !=
2216 target->generation)) {
2217 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2221 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2222 && (cdm->pos.cookie.bus == target->bus)
2223 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2224 && (cdm->pos.cookie.target == target)
2225 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2226 && (cdm->pos.cookie.device != NULL))
2227 return(xptdevicetraverse(target,
2228 (struct cam_ed *)cdm->pos.cookie.device,
2229 xptedtdevicefunc, arg));
2231 return(xptdevicetraverse(target, NULL, xptedtdevicefunc, arg));
2235 xptedtdevicefunc(struct cam_ed *device, void *arg)
2238 struct ccb_dev_match *cdm;
2239 dev_match_ret retval;
2241 cdm = (struct ccb_dev_match *)arg;
2244 * If our position is for something deeper in the tree, that means
2245 * that we've already seen this node. So, we keep going down.
2247 if ((cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2248 && (cdm->pos.cookie.device == device)
2249 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2250 && (cdm->pos.cookie.periph != NULL))
2251 retval = DM_RET_DESCEND;
2253 retval = xptdevicematch(cdm->patterns, cdm->num_patterns,
2256 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
2257 cdm->status = CAM_DEV_MATCH_ERROR;
2262 * If the copy flag is set, copy this device out.
2264 if (retval & DM_RET_COPY) {
2267 spaceleft = cdm->match_buf_len - (cdm->num_matches *
2268 sizeof(struct dev_match_result));
2271 * If we don't have enough space to put in another
2272 * match result, save our position and tell the
2273 * user there are more devices to check.
2275 if (spaceleft < sizeof(struct dev_match_result)) {
2276 bzero(&cdm->pos, sizeof(cdm->pos));
2277 cdm->pos.position_type =
2278 CAM_DEV_POS_EDT | CAM_DEV_POS_BUS |
2279 CAM_DEV_POS_TARGET | CAM_DEV_POS_DEVICE;
2281 cdm->pos.cookie.bus = device->target->bus;
2282 cdm->pos.generations[CAM_BUS_GENERATION]=
2283 xsoftc.bus_generation;
2284 cdm->pos.cookie.target = device->target;
2285 cdm->pos.generations[CAM_TARGET_GENERATION] =
2286 device->target->bus->generation;
2287 cdm->pos.cookie.device = device;
2288 cdm->pos.generations[CAM_DEV_GENERATION] =
2289 device->target->generation;
2290 cdm->status = CAM_DEV_MATCH_MORE;
2293 j = cdm->num_matches;
2295 cdm->matches[j].type = DEV_MATCH_DEVICE;
2296 cdm->matches[j].result.device_result.path_id =
2297 device->target->bus->path_id;
2298 cdm->matches[j].result.device_result.target_id =
2299 device->target->target_id;
2300 cdm->matches[j].result.device_result.target_lun =
2302 bcopy(&device->inq_data,
2303 &cdm->matches[j].result.device_result.inq_data,
2304 sizeof(struct scsi_inquiry_data));
2306 /* Let the user know whether this device is unconfigured */
2307 if (device->flags & CAM_DEV_UNCONFIGURED)
2308 cdm->matches[j].result.device_result.flags =
2309 DEV_RESULT_UNCONFIGURED;
2311 cdm->matches[j].result.device_result.flags =
2316 * If the user isn't interested in peripherals, don't descend
2317 * the tree any further.
2319 if ((retval & DM_RET_ACTION_MASK) == DM_RET_STOP)
2323 * If there is a peripheral list generation recorded, make sure
2324 * it hasn't changed.
2326 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2327 && (device->target->bus == cdm->pos.cookie.bus)
2328 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2329 && (device->target == cdm->pos.cookie.target)
2330 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2331 && (device == cdm->pos.cookie.device)
2332 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2333 && (cdm->pos.generations[CAM_PERIPH_GENERATION] != 0)
2334 && (cdm->pos.generations[CAM_PERIPH_GENERATION] !=
2335 device->generation)){
2336 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2340 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2341 && (cdm->pos.cookie.bus == device->target->bus)
2342 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
2343 && (cdm->pos.cookie.target == device->target)
2344 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
2345 && (cdm->pos.cookie.device == device)
2346 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2347 && (cdm->pos.cookie.periph != NULL))
2348 return(xptperiphtraverse(device,
2349 (struct cam_periph *)cdm->pos.cookie.periph,
2350 xptedtperiphfunc, arg));
2352 return(xptperiphtraverse(device, NULL, xptedtperiphfunc, arg));
2356 xptedtperiphfunc(struct cam_periph *periph, void *arg)
2358 struct ccb_dev_match *cdm;
2359 dev_match_ret retval;
2361 cdm = (struct ccb_dev_match *)arg;
2363 retval = xptperiphmatch(cdm->patterns, cdm->num_patterns, periph);
2365 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
2366 cdm->status = CAM_DEV_MATCH_ERROR;
2371 * If the copy flag is set, copy this peripheral out.
2373 if (retval & DM_RET_COPY) {
2376 spaceleft = cdm->match_buf_len - (cdm->num_matches *
2377 sizeof(struct dev_match_result));
2380 * If we don't have enough space to put in another
2381 * match result, save our position and tell the
2382 * user there are more devices to check.
2384 if (spaceleft < sizeof(struct dev_match_result)) {
2385 bzero(&cdm->pos, sizeof(cdm->pos));
2386 cdm->pos.position_type =
2387 CAM_DEV_POS_EDT | CAM_DEV_POS_BUS |
2388 CAM_DEV_POS_TARGET | CAM_DEV_POS_DEVICE |
2391 cdm->pos.cookie.bus = periph->path->bus;
2392 cdm->pos.generations[CAM_BUS_GENERATION]=
2393 xsoftc.bus_generation;
2394 cdm->pos.cookie.target = periph->path->target;
2395 cdm->pos.generations[CAM_TARGET_GENERATION] =
2396 periph->path->bus->generation;
2397 cdm->pos.cookie.device = periph->path->device;
2398 cdm->pos.generations[CAM_DEV_GENERATION] =
2399 periph->path->target->generation;
2400 cdm->pos.cookie.periph = periph;
2401 cdm->pos.generations[CAM_PERIPH_GENERATION] =
2402 periph->path->device->generation;
2403 cdm->status = CAM_DEV_MATCH_MORE;
2407 j = cdm->num_matches;
2409 cdm->matches[j].type = DEV_MATCH_PERIPH;
2410 cdm->matches[j].result.periph_result.path_id =
2411 periph->path->bus->path_id;
2412 cdm->matches[j].result.periph_result.target_id =
2413 periph->path->target->target_id;
2414 cdm->matches[j].result.periph_result.target_lun =
2415 periph->path->device->lun_id;
2416 cdm->matches[j].result.periph_result.unit_number =
2417 periph->unit_number;
2418 strncpy(cdm->matches[j].result.periph_result.periph_name,
2419 periph->periph_name, DEV_IDLEN);
2426 xptedtmatch(struct ccb_dev_match *cdm)
2430 cdm->num_matches = 0;
2433 * Check the bus list generation. If it has changed, the user
2434 * needs to reset everything and start over.
2436 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2437 && (cdm->pos.generations[CAM_BUS_GENERATION] != 0)
2438 && (cdm->pos.generations[CAM_BUS_GENERATION] != xsoftc.bus_generation)) {
2439 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2443 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
2444 && (cdm->pos.cookie.bus != NULL))
2445 ret = xptbustraverse((struct cam_eb *)cdm->pos.cookie.bus,
2446 xptedtbusfunc, cdm);
2448 ret = xptbustraverse(NULL, xptedtbusfunc, cdm);
2451 * If we get back 0, that means that we had to stop before fully
2452 * traversing the EDT. It also means that one of the subroutines
2453 * has set the status field to the proper value. If we get back 1,
2454 * we've fully traversed the EDT and copied out any matching entries.
2457 cdm->status = CAM_DEV_MATCH_LAST;
2463 xptplistpdrvfunc(struct periph_driver **pdrv, void *arg)
2465 struct ccb_dev_match *cdm;
2467 cdm = (struct ccb_dev_match *)arg;
2469 if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR)
2470 && (cdm->pos.cookie.pdrv == pdrv)
2471 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2472 && (cdm->pos.generations[CAM_PERIPH_GENERATION] != 0)
2473 && (cdm->pos.generations[CAM_PERIPH_GENERATION] !=
2474 (*pdrv)->generation)) {
2475 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
2479 if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR)
2480 && (cdm->pos.cookie.pdrv == pdrv)
2481 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
2482 && (cdm->pos.cookie.periph != NULL))
2483 return(xptpdperiphtraverse(pdrv,
2484 (struct cam_periph *)cdm->pos.cookie.periph,
2485 xptplistperiphfunc, arg));
2487 return(xptpdperiphtraverse(pdrv, NULL,xptplistperiphfunc, arg));
2491 xptplistperiphfunc(struct cam_periph *periph, void *arg)
2493 struct ccb_dev_match *cdm;
2494 dev_match_ret retval;
2496 cdm = (struct ccb_dev_match *)arg;
2498 retval = xptperiphmatch(cdm->patterns, cdm->num_patterns, periph);
2500 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
2501 cdm->status = CAM_DEV_MATCH_ERROR;
2506 * If the copy flag is set, copy this peripheral out.
2508 if (retval & DM_RET_COPY) {
2511 spaceleft = cdm->match_buf_len - (cdm->num_matches *
2512 sizeof(struct dev_match_result));
2515 * If we don't have enough space to put in another
2516 * match result, save our position and tell the
2517 * user there are more devices to check.
2519 if (spaceleft < sizeof(struct dev_match_result)) {
2520 struct periph_driver **pdrv;
2523 bzero(&cdm->pos, sizeof(cdm->pos));
2524 cdm->pos.position_type =
2525 CAM_DEV_POS_PDRV | CAM_DEV_POS_PDPTR |
2529 * This may look a bit non-sensical, but it is
2530 * actually quite logical. There are very few
2531 * peripheral drivers, and bloating every peripheral
2532 * structure with a pointer back to its parent
2533 * peripheral driver linker set entry would cost
2534 * more in the long run than doing this quick lookup.
2536 for (pdrv = periph_drivers; *pdrv != NULL; pdrv++) {
2537 if (strcmp((*pdrv)->driver_name,
2538 periph->periph_name) == 0)
2542 if (*pdrv == NULL) {
2543 cdm->status = CAM_DEV_MATCH_ERROR;
2547 cdm->pos.cookie.pdrv = pdrv;
2549 * The periph generation slot does double duty, as
2550 * does the periph pointer slot. They are used for
2551 * both edt and pdrv lookups and positioning.
2553 cdm->pos.cookie.periph = periph;
2554 cdm->pos.generations[CAM_PERIPH_GENERATION] =
2555 (*pdrv)->generation;
2556 cdm->status = CAM_DEV_MATCH_MORE;
2560 j = cdm->num_matches;
2562 cdm->matches[j].type = DEV_MATCH_PERIPH;
2563 cdm->matches[j].result.periph_result.path_id =
2564 periph->path->bus->path_id;
2567 * The transport layer peripheral doesn't have a target or
2570 if (periph->path->target)
2571 cdm->matches[j].result.periph_result.target_id =
2572 periph->path->target->target_id;
2574 cdm->matches[j].result.periph_result.target_id = -1;
2576 if (periph->path->device)
2577 cdm->matches[j].result.periph_result.target_lun =
2578 periph->path->device->lun_id;
2580 cdm->matches[j].result.periph_result.target_lun = -1;
2582 cdm->matches[j].result.periph_result.unit_number =
2583 periph->unit_number;
2584 strncpy(cdm->matches[j].result.periph_result.periph_name,
2585 periph->periph_name, DEV_IDLEN);
2592 xptperiphlistmatch(struct ccb_dev_match *cdm)
2596 cdm->num_matches = 0;
2599 * At this point in the edt traversal function, we check the bus
2600 * list generation to make sure that no busses have been added or
2601 * removed since the user last sent a XPT_DEV_MATCH ccb through.
2602 * For the peripheral driver list traversal function, however, we
2603 * don't have to worry about new peripheral driver types coming or
2604 * going; they're in a linker set, and therefore can't change
2605 * without a recompile.
2608 if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR)
2609 && (cdm->pos.cookie.pdrv != NULL))
2610 ret = xptpdrvtraverse(
2611 (struct periph_driver **)cdm->pos.cookie.pdrv,
2612 xptplistpdrvfunc, cdm);
2614 ret = xptpdrvtraverse(NULL, xptplistpdrvfunc, cdm);
2617 * If we get back 0, that means that we had to stop before fully
2618 * traversing the peripheral driver tree. It also means that one of
2619 * the subroutines has set the status field to the proper value. If
2620 * we get back 1, we've fully traversed the EDT and copied out any
2624 cdm->status = CAM_DEV_MATCH_LAST;
2630 xptbustraverse(struct cam_eb *start_bus, xpt_busfunc_t *tr_func, void *arg)
2632 struct cam_eb *bus, *next_bus;
2637 lockmgr(&xsoftc.xpt_topo_lock, LK_EXCLUSIVE);
2638 for (bus = (start_bus ? start_bus : TAILQ_FIRST(&xsoftc.xpt_busses));
2641 next_bus = TAILQ_NEXT(bus, links);
2643 lockmgr(&xsoftc.xpt_topo_lock, LK_RELEASE);
2644 CAM_SIM_LOCK(bus->sim);
2645 retval = tr_func(bus, arg);
2646 CAM_SIM_UNLOCK(bus->sim);
2649 lockmgr(&xsoftc.xpt_topo_lock, LK_EXCLUSIVE);
2651 lockmgr(&xsoftc.xpt_topo_lock, LK_RELEASE);
2657 xpttargettraverse(struct cam_eb *bus, struct cam_et *start_target,
2658 xpt_targetfunc_t *tr_func, void *arg)
2660 struct cam_et *target, *next_target;
2664 for (target = (start_target ? start_target :
2665 TAILQ_FIRST(&bus->et_entries));
2666 target != NULL; target = next_target) {
2668 next_target = TAILQ_NEXT(target, links);
2670 retval = tr_func(target, arg);
2680 xptdevicetraverse(struct cam_et *target, struct cam_ed *start_device,
2681 xpt_devicefunc_t *tr_func, void *arg)
2683 struct cam_ed *device, *next_device;
2687 for (device = (start_device ? start_device :
2688 TAILQ_FIRST(&target->ed_entries));
2690 device = next_device) {
2692 next_device = TAILQ_NEXT(device, links);
2694 retval = tr_func(device, arg);
2704 xptperiphtraverse(struct cam_ed *device, struct cam_periph *start_periph,
2705 xpt_periphfunc_t *tr_func, void *arg)
2707 struct cam_periph *periph, *next_periph;
2712 for (periph = (start_periph ? start_periph :
2713 SLIST_FIRST(&device->periphs));
2715 periph = next_periph) {
2717 next_periph = SLIST_NEXT(periph, periph_links);
2719 retval = tr_func(periph, arg);
2728 xptpdrvtraverse(struct periph_driver **start_pdrv,
2729 xpt_pdrvfunc_t *tr_func, void *arg)
2731 struct periph_driver **pdrv;
2737 * We don't traverse the peripheral driver list like we do the
2738 * other lists, because it is a linker set, and therefore cannot be
2739 * changed during runtime. If the peripheral driver list is ever
2740 * re-done to be something other than a linker set (i.e. it can
2741 * change while the system is running), the list traversal should
2742 * be modified to work like the other traversal functions.
2744 for (pdrv = (start_pdrv ? start_pdrv : periph_drivers);
2745 *pdrv != NULL; pdrv++) {
2746 retval = tr_func(pdrv, arg);
2756 xptpdperiphtraverse(struct periph_driver **pdrv,
2757 struct cam_periph *start_periph,
2758 xpt_periphfunc_t *tr_func, void *arg)
2760 struct cam_periph *periph, *next_periph;
2765 for (periph = (start_periph ? start_periph :
2766 TAILQ_FIRST(&(*pdrv)->units)); periph != NULL;
2767 periph = next_periph) {
2769 next_periph = TAILQ_NEXT(periph, unit_links);
2771 retval = tr_func(periph, arg);
2779 xptdefbusfunc(struct cam_eb *bus, void *arg)
2781 struct xpt_traverse_config *tr_config;
2783 tr_config = (struct xpt_traverse_config *)arg;
2785 if (tr_config->depth == XPT_DEPTH_BUS) {
2786 xpt_busfunc_t *tr_func;
2788 tr_func = (xpt_busfunc_t *)tr_config->tr_func;
2790 return(tr_func(bus, tr_config->tr_arg));
2792 return(xpttargettraverse(bus, NULL, xptdeftargetfunc, arg));
2796 xptdeftargetfunc(struct cam_et *target, void *arg)
2798 struct xpt_traverse_config *tr_config;
2800 tr_config = (struct xpt_traverse_config *)arg;
2802 if (tr_config->depth == XPT_DEPTH_TARGET) {
2803 xpt_targetfunc_t *tr_func;
2805 tr_func = (xpt_targetfunc_t *)tr_config->tr_func;
2807 return(tr_func(target, tr_config->tr_arg));
2809 return(xptdevicetraverse(target, NULL, xptdefdevicefunc, arg));
2813 xptdefdevicefunc(struct cam_ed *device, void *arg)
2815 struct xpt_traverse_config *tr_config;
2817 tr_config = (struct xpt_traverse_config *)arg;
2819 if (tr_config->depth == XPT_DEPTH_DEVICE) {
2820 xpt_devicefunc_t *tr_func;
2822 tr_func = (xpt_devicefunc_t *)tr_config->tr_func;
2824 return(tr_func(device, tr_config->tr_arg));
2826 return(xptperiphtraverse(device, NULL, xptdefperiphfunc, arg));
2830 xptdefperiphfunc(struct cam_periph *periph, void *arg)
2832 struct xpt_traverse_config *tr_config;
2833 xpt_periphfunc_t *tr_func;
2835 tr_config = (struct xpt_traverse_config *)arg;
2837 tr_func = (xpt_periphfunc_t *)tr_config->tr_func;
2840 * Unlike the other default functions, we don't check for depth
2841 * here. The peripheral driver level is the last level in the EDT,
2842 * so if we're here, we should execute the function in question.
2844 return(tr_func(periph, tr_config->tr_arg));
2848 * Execute the given function for every bus in the EDT.
2851 xpt_for_all_busses(xpt_busfunc_t *tr_func, void *arg)
2853 struct xpt_traverse_config tr_config;
2855 tr_config.depth = XPT_DEPTH_BUS;
2856 tr_config.tr_func = tr_func;
2857 tr_config.tr_arg = arg;
2859 return(xptbustraverse(NULL, xptdefbusfunc, &tr_config));
2863 * Execute the given function for every device in the EDT.
2866 xpt_for_all_devices(xpt_devicefunc_t *tr_func, void *arg)
2868 struct xpt_traverse_config tr_config;
2870 tr_config.depth = XPT_DEPTH_DEVICE;
2871 tr_config.tr_func = tr_func;
2872 tr_config.tr_arg = arg;
2874 return(xptbustraverse(NULL, xptdefbusfunc, &tr_config));
2878 xptsetasyncfunc(struct cam_ed *device, void *arg)
2880 struct cam_path path;
2881 struct ccb_getdev cgd;
2882 struct async_node *cur_entry;
2884 cur_entry = (struct async_node *)arg;
2887 * Don't report unconfigured devices (Wildcard devs,
2888 * devices only for target mode, device instances
2889 * that have been invalidated but are waiting for
2890 * their last reference count to be released).
2892 if ((device->flags & CAM_DEV_UNCONFIGURED) != 0)
2895 xpt_compile_path(&path,
2897 device->target->bus->path_id,
2898 device->target->target_id,
2900 xpt_setup_ccb(&cgd.ccb_h, &path, /*priority*/1);
2901 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
2902 xpt_action((union ccb *)&cgd);
2903 cur_entry->callback(cur_entry->callback_arg,
2906 xpt_release_path(&path);
2912 xptsetasyncbusfunc(struct cam_eb *bus, void *arg)
2914 struct cam_path path;
2915 struct ccb_pathinq cpi;
2916 struct async_node *cur_entry;
2918 cur_entry = (struct async_node *)arg;
2920 xpt_compile_path(&path, /*periph*/NULL,
2922 CAM_TARGET_WILDCARD,
2924 xpt_setup_ccb(&cpi.ccb_h, &path, /*priority*/1);
2925 cpi.ccb_h.func_code = XPT_PATH_INQ;
2926 xpt_action((union ccb *)&cpi);
2927 cur_entry->callback(cur_entry->callback_arg,
2930 xpt_release_path(&path);
2936 xpt_action_sasync_cb(void *context, int pending)
2938 struct async_node *cur_entry;
2939 struct xpt_task *task;
2942 task = (struct xpt_task *)context;
2943 cur_entry = (struct async_node *)task->data1;
2944 added = task->data2;
2946 if ((added & AC_FOUND_DEVICE) != 0) {
2948 * Get this peripheral up to date with all
2949 * the currently existing devices.
2951 xpt_for_all_devices(xptsetasyncfunc, cur_entry);
2953 if ((added & AC_PATH_REGISTERED) != 0) {
2955 * Get this peripheral up to date with all
2956 * the currently existing busses.
2958 xpt_for_all_busses(xptsetasyncbusfunc, cur_entry);
2961 kfree(task, M_CAMXPT);
2965 xpt_action(union ccb *start_ccb)
2967 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("xpt_action\n"));
2969 start_ccb->ccb_h.status = CAM_REQ_INPROG;
2971 switch (start_ccb->ccb_h.func_code) {
2974 struct cam_ed *device;
2976 char cdb_str[(SCSI_MAX_CDBLEN * 3) + 1];
2977 struct cam_path *path;
2979 path = start_ccb->ccb_h.path;
2983 * For the sake of compatibility with SCSI-1
2984 * devices that may not understand the identify
2985 * message, we include lun information in the
2986 * second byte of all commands. SCSI-1 specifies
2987 * that luns are a 3 bit value and reserves only 3
2988 * bits for lun information in the CDB. Later
2989 * revisions of the SCSI spec allow for more than 8
2990 * luns, but have deprecated lun information in the
2991 * CDB. So, if the lun won't fit, we must omit.
2993 * Also be aware that during initial probing for devices,
2994 * the inquiry information is unknown but initialized to 0.
2995 * This means that this code will be exercised while probing
2996 * devices with an ANSI revision greater than 2.
2998 device = start_ccb->ccb_h.path->device;
2999 if (device->protocol_version <= SCSI_REV_2
3000 && start_ccb->ccb_h.target_lun < 8
3001 && (start_ccb->ccb_h.flags & CAM_CDB_POINTER) == 0) {
3003 start_ccb->csio.cdb_io.cdb_bytes[1] |=
3004 start_ccb->ccb_h.target_lun << 5;
3006 start_ccb->csio.scsi_status = SCSI_STATUS_OK;
3007 CAM_DEBUG(path, CAM_DEBUG_CDB,("%s. CDB: %s\n",
3008 scsi_op_desc(start_ccb->csio.cdb_io.cdb_bytes[0],
3009 &path->device->inq_data),
3010 scsi_cdb_string(start_ccb->csio.cdb_io.cdb_bytes,
3011 cdb_str, sizeof(cdb_str))));
3015 case XPT_CONT_TARGET_IO:
3016 start_ccb->csio.sense_resid = 0;
3017 start_ccb->csio.resid = 0;
3022 struct cam_path *path;
3023 struct cam_sim *sim;
3026 path = start_ccb->ccb_h.path;
3028 sim = path->bus->sim;
3029 if (sim == &cam_dead_sim) {
3030 /* The SIM has gone; just execute the CCB directly. */
3031 cam_ccbq_send_ccb(&path->device->ccbq, start_ccb);
3032 (*(sim->sim_action))(sim, start_ccb);
3036 cam_ccbq_insert_ccb(&path->device->ccbq, start_ccb);
3037 if (path->device->qfrozen_cnt == 0)
3038 runq = xpt_schedule_dev_sendq(path->bus, path->device);
3042 xpt_run_dev_sendq(path->bus);
3045 case XPT_SET_TRAN_SETTINGS:
3047 xpt_set_transfer_settings(&start_ccb->cts,
3048 start_ccb->ccb_h.path->device,
3049 /*async_update*/FALSE);
3052 case XPT_CALC_GEOMETRY:
3054 struct cam_sim *sim;
3056 /* Filter out garbage */
3057 if (start_ccb->ccg.block_size == 0
3058 || start_ccb->ccg.volume_size == 0) {
3059 start_ccb->ccg.cylinders = 0;
3060 start_ccb->ccg.heads = 0;
3061 start_ccb->ccg.secs_per_track = 0;
3062 start_ccb->ccb_h.status = CAM_REQ_CMP;
3065 sim = start_ccb->ccb_h.path->bus->sim;
3066 (*(sim->sim_action))(sim, start_ccb);
3071 union ccb* abort_ccb;
3073 abort_ccb = start_ccb->cab.abort_ccb;
3074 if (XPT_FC_IS_DEV_QUEUED(abort_ccb)) {
3076 if (abort_ccb->ccb_h.pinfo.index >= 0) {
3077 struct cam_ccbq *ccbq;
3079 ccbq = &abort_ccb->ccb_h.path->device->ccbq;
3080 cam_ccbq_remove_ccb(ccbq, abort_ccb);
3081 abort_ccb->ccb_h.status =
3082 CAM_REQ_ABORTED|CAM_DEV_QFRZN;
3083 xpt_freeze_devq(abort_ccb->ccb_h.path, 1);
3084 xpt_done(abort_ccb);
3085 start_ccb->ccb_h.status = CAM_REQ_CMP;
3088 if (abort_ccb->ccb_h.pinfo.index == CAM_UNQUEUED_INDEX
3089 && (abort_ccb->ccb_h.status & CAM_SIM_QUEUED) == 0) {
3091 * We've caught this ccb en route to
3092 * the SIM. Flag it for abort and the
3093 * SIM will do so just before starting
3094 * real work on the CCB.
3096 abort_ccb->ccb_h.status =
3097 CAM_REQ_ABORTED|CAM_DEV_QFRZN;
3098 xpt_freeze_devq(abort_ccb->ccb_h.path, 1);
3099 start_ccb->ccb_h.status = CAM_REQ_CMP;
3103 if (XPT_FC_IS_QUEUED(abort_ccb)
3104 && (abort_ccb->ccb_h.pinfo.index == CAM_DONEQ_INDEX)) {
3106 * It's already completed but waiting
3107 * for our SWI to get to it.
3109 start_ccb->ccb_h.status = CAM_UA_ABORT;
3113 * If we weren't able to take care of the abort request
3114 * in the XPT, pass the request down to the SIM for processing.
3118 case XPT_ACCEPT_TARGET_IO:
3120 case XPT_IMMED_NOTIFY:
3121 case XPT_NOTIFY_ACK:
3122 case XPT_GET_TRAN_SETTINGS:
3125 struct cam_sim *sim;
3127 sim = start_ccb->ccb_h.path->bus->sim;
3128 (*(sim->sim_action))(sim, start_ccb);
3133 struct cam_sim *sim;
3135 sim = start_ccb->ccb_h.path->bus->sim;
3136 (*(sim->sim_action))(sim, start_ccb);
3139 case XPT_PATH_STATS:
3140 start_ccb->cpis.last_reset =
3141 start_ccb->ccb_h.path->bus->last_reset;
3142 start_ccb->ccb_h.status = CAM_REQ_CMP;
3148 dev = start_ccb->ccb_h.path->device;
3149 if ((dev->flags & CAM_DEV_UNCONFIGURED) != 0) {
3150 start_ccb->ccb_h.status = CAM_DEV_NOT_THERE;
3152 struct ccb_getdev *cgd;
3156 cgd = &start_ccb->cgd;
3157 bus = cgd->ccb_h.path->bus;
3158 tar = cgd->ccb_h.path->target;
3159 cgd->inq_data = dev->inq_data;
3160 cgd->ccb_h.status = CAM_REQ_CMP;
3161 cgd->serial_num_len = dev->serial_num_len;
3162 if ((dev->serial_num_len > 0)
3163 && (dev->serial_num != NULL))
3164 bcopy(dev->serial_num, cgd->serial_num,
3165 dev->serial_num_len);
3169 case XPT_GDEV_STATS:
3173 dev = start_ccb->ccb_h.path->device;
3174 if ((dev->flags & CAM_DEV_UNCONFIGURED) != 0) {
3175 start_ccb->ccb_h.status = CAM_DEV_NOT_THERE;
3177 struct ccb_getdevstats *cgds;
3181 cgds = &start_ccb->cgds;
3182 bus = cgds->ccb_h.path->bus;
3183 tar = cgds->ccb_h.path->target;
3184 cgds->dev_openings = dev->ccbq.dev_openings;
3185 cgds->dev_active = dev->ccbq.dev_active;
3186 cgds->devq_openings = dev->ccbq.devq_openings;
3187 cgds->devq_queued = dev->ccbq.queue.entries;
3188 cgds->held = dev->ccbq.held;
3189 cgds->last_reset = tar->last_reset;
3190 cgds->maxtags = dev->quirk->maxtags;
3191 cgds->mintags = dev->quirk->mintags;
3192 if (timevalcmp(&tar->last_reset, &bus->last_reset, <))
3193 cgds->last_reset = bus->last_reset;
3194 cgds->ccb_h.status = CAM_REQ_CMP;
3200 struct cam_periph *nperiph;
3201 struct periph_list *periph_head;
3202 struct ccb_getdevlist *cgdl;
3204 struct cam_ed *device;
3211 * Don't want anyone mucking with our data.
3213 device = start_ccb->ccb_h.path->device;
3214 periph_head = &device->periphs;
3215 cgdl = &start_ccb->cgdl;
3218 * Check and see if the list has changed since the user
3219 * last requested a list member. If so, tell them that the
3220 * list has changed, and therefore they need to start over
3221 * from the beginning.
3223 if ((cgdl->index != 0) &&
3224 (cgdl->generation != device->generation)) {
3225 cgdl->status = CAM_GDEVLIST_LIST_CHANGED;
3230 * Traverse the list of peripherals and attempt to find
3231 * the requested peripheral.
3233 for (nperiph = SLIST_FIRST(periph_head), i = 0;
3234 (nperiph != NULL) && (i <= cgdl->index);
3235 nperiph = SLIST_NEXT(nperiph, periph_links), i++) {
3236 if (i == cgdl->index) {
3237 strncpy(cgdl->periph_name,
3238 nperiph->periph_name,
3240 cgdl->unit_number = nperiph->unit_number;
3245 cgdl->status = CAM_GDEVLIST_ERROR;
3249 if (nperiph == NULL)
3250 cgdl->status = CAM_GDEVLIST_LAST_DEVICE;
3252 cgdl->status = CAM_GDEVLIST_MORE_DEVS;
3255 cgdl->generation = device->generation;
3257 cgdl->ccb_h.status = CAM_REQ_CMP;
3262 dev_pos_type position_type;
3263 struct ccb_dev_match *cdm;
3266 cdm = &start_ccb->cdm;
3269 * There are two ways of getting at information in the EDT.
3270 * The first way is via the primary EDT tree. It starts
3271 * with a list of busses, then a list of targets on a bus,
3272 * then devices/luns on a target, and then peripherals on a
3273 * device/lun. The "other" way is by the peripheral driver
3274 * lists. The peripheral driver lists are organized by
3275 * peripheral driver. (obviously) So it makes sense to
3276 * use the peripheral driver list if the user is looking
3277 * for something like "da1", or all "da" devices. If the
3278 * user is looking for something on a particular bus/target
3279 * or lun, it's generally better to go through the EDT tree.
3282 if (cdm->pos.position_type != CAM_DEV_POS_NONE)
3283 position_type = cdm->pos.position_type;
3287 position_type = CAM_DEV_POS_NONE;
3289 for (i = 0; i < cdm->num_patterns; i++) {
3290 if ((cdm->patterns[i].type == DEV_MATCH_BUS)
3291 ||(cdm->patterns[i].type == DEV_MATCH_DEVICE)){
3292 position_type = CAM_DEV_POS_EDT;
3297 if (cdm->num_patterns == 0)
3298 position_type = CAM_DEV_POS_EDT;
3299 else if (position_type == CAM_DEV_POS_NONE)
3300 position_type = CAM_DEV_POS_PDRV;
3303 switch(position_type & CAM_DEV_POS_TYPEMASK) {
3304 case CAM_DEV_POS_EDT:
3305 ret = xptedtmatch(cdm);
3307 case CAM_DEV_POS_PDRV:
3308 ret = xptperiphlistmatch(cdm);
3311 cdm->status = CAM_DEV_MATCH_ERROR;
3315 if (cdm->status == CAM_DEV_MATCH_ERROR)
3316 start_ccb->ccb_h.status = CAM_REQ_CMP_ERR;
3318 start_ccb->ccb_h.status = CAM_REQ_CMP;
3324 struct ccb_setasync *csa;
3325 struct async_node *cur_entry;
3326 struct async_list *async_head;
3329 csa = &start_ccb->csa;
3330 added = csa->event_enable;
3331 async_head = &csa->ccb_h.path->device->asyncs;
3334 * If there is already an entry for us, simply
3337 cur_entry = SLIST_FIRST(async_head);
3338 while (cur_entry != NULL) {
3339 if ((cur_entry->callback_arg == csa->callback_arg)
3340 && (cur_entry->callback == csa->callback))
3342 cur_entry = SLIST_NEXT(cur_entry, links);
3345 if (cur_entry != NULL) {
3347 * If the request has no flags set,
3350 added &= ~cur_entry->event_enable;
3351 if (csa->event_enable == 0) {
3352 SLIST_REMOVE(async_head, cur_entry,
3354 csa->ccb_h.path->device->refcount--;
3355 kfree(cur_entry, M_CAMXPT);
3357 cur_entry->event_enable = csa->event_enable;
3360 cur_entry = kmalloc(sizeof(*cur_entry), M_CAMXPT,
3362 cur_entry->event_enable = csa->event_enable;
3363 cur_entry->callback_arg = csa->callback_arg;
3364 cur_entry->callback = csa->callback;
3365 SLIST_INSERT_HEAD(async_head, cur_entry, links);
3366 csa->ccb_h.path->device->refcount++;
3370 * Need to decouple this operation via a taskqueue so that
3371 * the locking doesn't become a mess.
3373 if ((added & (AC_FOUND_DEVICE | AC_PATH_REGISTERED)) != 0) {
3374 struct xpt_task *task;
3376 task = kmalloc(sizeof(struct xpt_task), M_CAMXPT,
3379 TASK_INIT(&task->task, 0, xpt_action_sasync_cb, task);
3380 task->data1 = cur_entry;
3381 task->data2 = added;
3382 taskqueue_enqueue(taskqueue_thread[mycpuid],
3386 start_ccb->ccb_h.status = CAM_REQ_CMP;
3391 struct ccb_relsim *crs;
3394 crs = &start_ccb->crs;
3395 dev = crs->ccb_h.path->device;
3398 crs->ccb_h.status = CAM_DEV_NOT_THERE;
3402 if ((crs->release_flags & RELSIM_ADJUST_OPENINGS) != 0) {
3404 if (INQ_DATA_TQ_ENABLED(&dev->inq_data)) {
3405 /* Don't ever go below one opening */
3406 if (crs->openings > 0) {
3407 xpt_dev_ccbq_resize(crs->ccb_h.path,
3411 xpt_print(crs->ccb_h.path,
3412 "tagged openings now %d\n",
3419 if ((crs->release_flags & RELSIM_RELEASE_AFTER_TIMEOUT) != 0) {
3421 if ((dev->flags & CAM_DEV_REL_TIMEOUT_PENDING) != 0) {
3424 * Just extend the old timeout and decrement
3425 * the freeze count so that a single timeout
3426 * is sufficient for releasing the queue.
3428 start_ccb->ccb_h.flags &= ~CAM_DEV_QFREEZE;
3429 callout_stop(&dev->callout);
3432 start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
3435 callout_reset(&dev->callout,
3436 (crs->release_timeout * hz) / 1000,
3437 xpt_release_devq_timeout, dev);
3439 dev->flags |= CAM_DEV_REL_TIMEOUT_PENDING;
3443 if ((crs->release_flags & RELSIM_RELEASE_AFTER_CMDCMPLT) != 0) {
3445 if ((dev->flags & CAM_DEV_REL_ON_COMPLETE) != 0) {
3447 * Decrement the freeze count so that a single
3448 * completion is still sufficient to unfreeze
3451 start_ccb->ccb_h.flags &= ~CAM_DEV_QFREEZE;
3454 dev->flags |= CAM_DEV_REL_ON_COMPLETE;
3455 start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
3459 if ((crs->release_flags & RELSIM_RELEASE_AFTER_QEMPTY) != 0) {
3461 if ((dev->flags & CAM_DEV_REL_ON_QUEUE_EMPTY) != 0
3462 || (dev->ccbq.dev_active == 0)) {
3464 start_ccb->ccb_h.flags &= ~CAM_DEV_QFREEZE;
3467 dev->flags |= CAM_DEV_REL_ON_QUEUE_EMPTY;
3468 start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
3472 if ((start_ccb->ccb_h.flags & CAM_DEV_QFREEZE) == 0) {
3474 xpt_release_devq(crs->ccb_h.path, /*count*/1,
3477 start_ccb->crs.qfrozen_cnt = dev->qfrozen_cnt;
3478 start_ccb->ccb_h.status = CAM_REQ_CMP;
3482 xpt_scan_bus(start_ccb->ccb_h.path->periph, start_ccb);
3485 xpt_scan_lun(start_ccb->ccb_h.path->periph,
3486 start_ccb->ccb_h.path, start_ccb->crcn.flags,
3491 #ifdef CAM_DEBUG_DELAY
3492 cam_debug_delay = CAM_DEBUG_DELAY;
3494 cam_dflags = start_ccb->cdbg.flags;
3495 if (cam_dpath != NULL) {
3496 xpt_free_path(cam_dpath);
3500 if (cam_dflags != CAM_DEBUG_NONE) {
3501 if (xpt_create_path(&cam_dpath, xpt_periph,
3502 start_ccb->ccb_h.path_id,
3503 start_ccb->ccb_h.target_id,
3504 start_ccb->ccb_h.target_lun) !=
3506 start_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
3507 cam_dflags = CAM_DEBUG_NONE;
3509 start_ccb->ccb_h.status = CAM_REQ_CMP;
3510 xpt_print(cam_dpath, "debugging flags now %x\n",
3515 start_ccb->ccb_h.status = CAM_REQ_CMP;
3517 #else /* !CAMDEBUG */
3518 start_ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
3519 #endif /* CAMDEBUG */
3523 if ((start_ccb->ccb_h.flags & CAM_DEV_QFREEZE) != 0)
3524 xpt_freeze_devq(start_ccb->ccb_h.path, 1);
3525 start_ccb->ccb_h.status = CAM_REQ_CMP;
3532 start_ccb->ccb_h.status = CAM_PROVIDE_FAIL;
3538 xpt_polled_action(union ccb *start_ccb)
3541 struct cam_sim *sim;
3542 struct cam_devq *devq;
3545 timeout = start_ccb->ccb_h.timeout;
3546 sim = start_ccb->ccb_h.path->bus->sim;
3548 dev = start_ccb->ccb_h.path->device;
3550 sim_lock_assert_owned(sim->lock);
3553 * Steal an opening so that no other queued requests
3554 * can get it before us while we simulate interrupts.
3556 dev->ccbq.devq_openings--;
3557 dev->ccbq.dev_openings--;
3559 while(((devq && devq->send_openings <= 0) || dev->ccbq.dev_openings < 0)
3560 && (--timeout > 0)) {
3562 (*(sim->sim_poll))(sim);
3563 camisr_runqueue(sim);
3566 dev->ccbq.devq_openings++;
3567 dev->ccbq.dev_openings++;
3570 xpt_action(start_ccb);
3571 while(--timeout > 0) {
3572 (*(sim->sim_poll))(sim);
3573 camisr_runqueue(sim);
3574 if ((start_ccb->ccb_h.status & CAM_STATUS_MASK)
3581 * XXX Is it worth adding a sim_timeout entry
3582 * point so we can attempt recovery? If
3583 * this is only used for dumps, I don't think
3586 start_ccb->ccb_h.status = CAM_CMD_TIMEOUT;
3589 start_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
3594 * Schedule a peripheral driver to receive a ccb when it's
3595 * target device has space for more transactions.
3598 xpt_schedule(struct cam_periph *perph, u_int32_t new_priority)
3600 struct cam_ed *device;
3601 union ccb *work_ccb;
3604 sim_lock_assert_owned(perph->sim->lock);
3606 CAM_DEBUG(perph->path, CAM_DEBUG_TRACE, ("xpt_schedule\n"));
3607 device = perph->path->device;
3608 if (periph_is_queued(perph)) {
3609 /* Simply reorder based on new priority */
3610 CAM_DEBUG(perph->path, CAM_DEBUG_SUBTRACE,
3611 (" change priority to %d\n", new_priority));
3612 if (new_priority < perph->pinfo.priority) {
3613 camq_change_priority(&device->drvq,
3618 } else if (perph->path->bus->sim == &cam_dead_sim) {
3619 /* The SIM is gone so just call periph_start directly. */
3620 work_ccb = xpt_get_ccb(perph->path->device);
3621 if (work_ccb == NULL)
3623 xpt_setup_ccb(&work_ccb->ccb_h, perph->path, new_priority);
3624 perph->pinfo.priority = new_priority;
3625 perph->periph_start(perph, work_ccb);
3628 /* New entry on the queue */
3629 CAM_DEBUG(perph->path, CAM_DEBUG_SUBTRACE,
3630 (" added periph to queue\n"));
3631 perph->pinfo.priority = new_priority;
3632 perph->pinfo.generation = ++device->drvq.generation;
3633 camq_insert(&device->drvq, &perph->pinfo);
3634 runq = xpt_schedule_dev_allocq(perph->path->bus, device);
3637 CAM_DEBUG(perph->path, CAM_DEBUG_SUBTRACE,
3638 (" calling xpt_run_devq\n"));
3639 xpt_run_dev_allocq(perph->path->bus);
3645 * Schedule a device to run on a given queue.
3646 * If the device was inserted as a new entry on the queue,
3647 * return 1 meaning the device queue should be run. If we
3648 * were already queued, implying someone else has already
3649 * started the queue, return 0 so the caller doesn't attempt
3653 xpt_schedule_dev(struct camq *queue, cam_pinfo *pinfo,
3654 u_int32_t new_priority)
3657 u_int32_t old_priority;
3659 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_schedule_dev\n"));
3661 old_priority = pinfo->priority;
3664 * Are we already queued?
3666 if (pinfo->index != CAM_UNQUEUED_INDEX) {
3667 /* Simply reorder based on new priority */
3668 if (new_priority < old_priority) {
3669 camq_change_priority(queue, pinfo->index,
3671 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3672 ("changed priority to %d\n",
3677 /* New entry on the queue */
3678 if (new_priority < old_priority)
3679 pinfo->priority = new_priority;
3681 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3682 ("Inserting onto queue\n"));
3683 pinfo->generation = ++queue->generation;
3684 camq_insert(queue, pinfo);
3691 xpt_run_dev_allocq(struct cam_eb *bus)
3693 struct cam_devq *devq;
3695 if ((devq = bus->sim->devq) == NULL) {
3696 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_run_dev_allocq: NULL devq\n"));
3699 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_run_dev_allocq\n"));
3701 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3702 (" qfrozen_cnt == 0x%x, entries == %d, "
3703 "openings == %d, active == %d\n",
3704 devq->alloc_queue.qfrozen_cnt,
3705 devq->alloc_queue.entries,
3706 devq->alloc_openings,
3707 devq->alloc_active));
3709 devq->alloc_queue.qfrozen_cnt++;
3710 while ((devq->alloc_queue.entries > 0)
3711 && (devq->alloc_openings > 0)
3712 && (devq->alloc_queue.qfrozen_cnt <= 1)) {
3713 struct cam_ed_qinfo *qinfo;
3714 struct cam_ed *device;
3715 union ccb *work_ccb;
3716 struct cam_periph *drv;
3719 qinfo = (struct cam_ed_qinfo *)camq_remove(&devq->alloc_queue,
3721 device = qinfo->device;
3723 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3724 ("running device %p\n", device));
3726 drvq = &device->drvq;
3729 if (drvq->entries <= 0) {
3730 panic("xpt_run_dev_allocq: "
3731 "Device on queue without any work to do");
3734 if ((work_ccb = xpt_get_ccb(device)) != NULL) {
3735 devq->alloc_openings--;
3736 devq->alloc_active++;
3737 drv = (struct cam_periph*)camq_remove(drvq, CAMQ_HEAD);
3738 xpt_setup_ccb(&work_ccb->ccb_h, drv->path,
3739 drv->pinfo.priority);
3740 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3741 ("calling periph start\n"));
3742 drv->periph_start(drv, work_ccb);
3745 * Malloc failure in alloc_ccb
3748 * XXX add us to a list to be run from free_ccb
3749 * if we don't have any ccbs active on this
3750 * device queue otherwise we may never get run
3756 if (drvq->entries > 0) {
3757 /* We have more work. Attempt to reschedule */
3758 xpt_schedule_dev_allocq(bus, device);
3761 devq->alloc_queue.qfrozen_cnt--;
3765 xpt_run_dev_sendq(struct cam_eb *bus)
3767 struct cam_devq *devq;
3769 if ((devq = bus->sim->devq) == NULL) {
3770 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_run_dev_sendq: NULL devq\n"));
3773 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_run_dev_sendq\n"));
3775 devq->send_queue.qfrozen_cnt++;
3776 while ((devq->send_queue.entries > 0)
3777 && (devq->send_openings > 0)) {
3778 struct cam_ed_qinfo *qinfo;
3779 struct cam_ed *device;
3780 union ccb *work_ccb;
3781 struct cam_sim *sim;
3783 if (devq->send_queue.qfrozen_cnt > 1) {
3787 qinfo = (struct cam_ed_qinfo *)camq_remove(&devq->send_queue,
3789 device = qinfo->device;
3792 * If the device has been "frozen", don't attempt
3795 if (device->qfrozen_cnt > 0) {
3799 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3800 ("running device %p\n", device));
3802 work_ccb = cam_ccbq_peek_ccb(&device->ccbq, CAMQ_HEAD);
3803 if (work_ccb == NULL) {
3804 kprintf("device on run queue with no ccbs???\n");
3808 if ((work_ccb->ccb_h.flags & CAM_HIGH_POWER) != 0) {
3810 lockmgr(&xsoftc.xpt_lock, LK_EXCLUSIVE);
3811 if (xsoftc.num_highpower <= 0) {
3813 * We got a high power command, but we
3814 * don't have any available slots. Freeze
3815 * the device queue until we have a slot
3818 device->qfrozen_cnt++;
3819 STAILQ_INSERT_TAIL(&xsoftc.highpowerq,
3823 lockmgr(&xsoftc.xpt_lock, LK_RELEASE);
3827 * Consume a high power slot while
3830 xsoftc.num_highpower--;
3832 lockmgr(&xsoftc.xpt_lock, LK_RELEASE);
3834 devq->active_dev = device;
3835 cam_ccbq_remove_ccb(&device->ccbq, work_ccb);
3837 cam_ccbq_send_ccb(&device->ccbq, work_ccb);
3839 devq->send_openings--;
3840 devq->send_active++;
3842 if (device->ccbq.queue.entries > 0)
3843 xpt_schedule_dev_sendq(bus, device);
3845 if (work_ccb && (work_ccb->ccb_h.flags & CAM_DEV_QFREEZE) != 0){
3847 * The client wants to freeze the queue
3848 * after this CCB is sent.
3850 device->qfrozen_cnt++;
3853 /* In Target mode, the peripheral driver knows best... */
3854 if (work_ccb->ccb_h.func_code == XPT_SCSI_IO) {
3855 if ((device->inq_flags & SID_CmdQue) != 0
3856 && work_ccb->csio.tag_action != CAM_TAG_ACTION_NONE)
3857 work_ccb->ccb_h.flags |= CAM_TAG_ACTION_VALID;
3860 * Clear this in case of a retried CCB that
3861 * failed due to a rejected tag.
3863 work_ccb->ccb_h.flags &= ~CAM_TAG_ACTION_VALID;
3867 * Device queues can be shared among multiple sim instances
3868 * that reside on different busses. Use the SIM in the queue
3869 * CCB's path, rather than the one in the bus that was passed
3870 * into this function.
3872 sim = work_ccb->ccb_h.path->bus->sim;
3873 (*(sim->sim_action))(sim, work_ccb);
3875 devq->active_dev = NULL;
3877 devq->send_queue.qfrozen_cnt--;
3881 * This function merges stuff from the slave ccb into the master ccb, while
3882 * keeping important fields in the master ccb constant.
3885 xpt_merge_ccb(union ccb *master_ccb, union ccb *slave_ccb)
3888 * Pull fields that are valid for peripheral drivers to set
3889 * into the master CCB along with the CCB "payload".
3891 master_ccb->ccb_h.retry_count = slave_ccb->ccb_h.retry_count;
3892 master_ccb->ccb_h.func_code = slave_ccb->ccb_h.func_code;
3893 master_ccb->ccb_h.timeout = slave_ccb->ccb_h.timeout;
3894 master_ccb->ccb_h.flags = slave_ccb->ccb_h.flags;
3895 bcopy(&(&slave_ccb->ccb_h)[1], &(&master_ccb->ccb_h)[1],
3896 sizeof(union ccb) - sizeof(struct ccb_hdr));
3900 xpt_setup_ccb(struct ccb_hdr *ccb_h, struct cam_path *path, u_int32_t priority)
3902 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_setup_ccb\n"));
3903 callout_init(&ccb_h->timeout_ch);
3904 ccb_h->pinfo.priority = priority;
3906 ccb_h->path_id = path->bus->path_id;
3908 ccb_h->target_id = path->target->target_id;
3910 ccb_h->target_id = CAM_TARGET_WILDCARD;
3912 ccb_h->target_lun = path->device->lun_id;
3913 ccb_h->pinfo.generation = ++path->device->ccbq.queue.generation;
3915 ccb_h->target_lun = CAM_TARGET_WILDCARD;
3917 ccb_h->pinfo.index = CAM_UNQUEUED_INDEX;
3921 /* Path manipulation functions */
3923 xpt_create_path(struct cam_path **new_path_ptr, struct cam_periph *perph,
3924 path_id_t path_id, target_id_t target_id, lun_id_t lun_id)
3926 struct cam_path *path;
3929 path = kmalloc(sizeof(*path), M_CAMXPT, M_INTWAIT);
3930 status = xpt_compile_path(path, perph, path_id, target_id, lun_id);
3931 if (status != CAM_REQ_CMP) {
3932 kfree(path, M_CAMXPT);
3935 *new_path_ptr = path;
3940 xpt_create_path_unlocked(struct cam_path **new_path_ptr,
3941 struct cam_periph *periph, path_id_t path_id,
3942 target_id_t target_id, lun_id_t lun_id)
3944 struct cam_path *path;
3945 struct cam_eb *bus = NULL;
3947 int need_unlock = 0;
3949 path = (struct cam_path *)kmalloc(sizeof(*path), M_CAMXPT, M_WAITOK);
3951 if (path_id != CAM_BUS_WILDCARD) {
3952 bus = xpt_find_bus(path_id);
3955 CAM_SIM_LOCK(bus->sim);
3958 status = xpt_compile_path(path, periph, path_id, target_id, lun_id);
3960 CAM_SIM_UNLOCK(bus->sim);
3961 if (status != CAM_REQ_CMP) {
3962 kfree(path, M_CAMXPT);
3965 *new_path_ptr = path;
3970 xpt_compile_path(struct cam_path *new_path, struct cam_periph *perph,
3971 path_id_t path_id, target_id_t target_id, lun_id_t lun_id)
3974 struct cam_et *target;
3975 struct cam_ed *device;
3978 status = CAM_REQ_CMP; /* Completed without error */
3979 target = NULL; /* Wildcarded */
3980 device = NULL; /* Wildcarded */
3983 * We will potentially modify the EDT, so block interrupts
3984 * that may attempt to create cam paths.
3986 bus = xpt_find_bus(path_id);
3988 status = CAM_PATH_INVALID;
3990 target = xpt_find_target(bus, target_id);
3991 if (target == NULL) {
3993 struct cam_et *new_target;
3995 new_target = xpt_alloc_target(bus, target_id);
3996 if (new_target == NULL) {
3997 status = CAM_RESRC_UNAVAIL;
3999 target = new_target;
4002 if (target != NULL) {
4003 device = xpt_find_device(target, lun_id);
4004 if (device == NULL) {
4006 struct cam_ed *new_device;
4008 new_device = xpt_alloc_device(bus,
4011 if (new_device == NULL) {
4012 status = CAM_RESRC_UNAVAIL;
4014 device = new_device;
4021 * Only touch the user's data if we are successful.
4023 if (status == CAM_REQ_CMP) {
4024 new_path->periph = perph;
4025 new_path->bus = bus;
4026 new_path->target = target;
4027 new_path->device = device;
4028 CAM_DEBUG(new_path, CAM_DEBUG_TRACE, ("xpt_compile_path\n"));
4031 xpt_release_device(bus, target, device);
4033 xpt_release_target(bus, target);
4035 xpt_release_bus(bus);
4041 xpt_release_path(struct cam_path *path)
4043 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_release_path\n"));
4044 if (path->device != NULL) {
4045 xpt_release_device(path->bus, path->target, path->device);
4046 path->device = NULL;
4048 if (path->target != NULL) {
4049 xpt_release_target(path->bus, path->target);
4050 path->target = NULL;
4052 if (path->bus != NULL) {
4053 xpt_release_bus(path->bus);
4059 xpt_free_path(struct cam_path *path)
4061 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_free_path\n"));
4062 xpt_release_path(path);
4063 kfree(path, M_CAMXPT);
4068 * Return -1 for failure, 0 for exact match, 1 for match with wildcards
4069 * in path1, 2 for match with wildcards in path2.
4072 xpt_path_comp(struct cam_path *path1, struct cam_path *path2)
4076 if (path1->bus != path2->bus) {
4077 if (path1->bus->path_id == CAM_BUS_WILDCARD)
4079 else if (path2->bus->path_id == CAM_BUS_WILDCARD)
4084 if (path1->target != path2->target) {
4085 if (path1->target->target_id == CAM_TARGET_WILDCARD) {
4088 } else if (path2->target->target_id == CAM_TARGET_WILDCARD)
4093 if (path1->device != path2->device) {
4094 if (path1->device->lun_id == CAM_LUN_WILDCARD) {
4097 } else if (path2->device->lun_id == CAM_LUN_WILDCARD)
4106 xpt_print_path(struct cam_path *path)
4110 kprintf("(nopath): ");
4112 if (path->periph != NULL)
4113 kprintf("(%s%d:", path->periph->periph_name,
4114 path->periph->unit_number);
4116 kprintf("(noperiph:");
4118 if (path->bus != NULL)
4119 kprintf("%s%d:%d:", path->bus->sim->sim_name,
4120 path->bus->sim->unit_number,
4121 path->bus->sim->bus_id);
4125 if (path->target != NULL)
4126 kprintf("%d:", path->target->target_id);
4130 if (path->device != NULL)
4131 kprintf("%d): ", path->device->lun_id);
4138 xpt_print(struct cam_path *path, const char *fmt, ...)
4141 xpt_print_path(path);
4142 __va_start(ap, fmt);
4148 xpt_path_string(struct cam_path *path, char *str, size_t str_len)
4152 sim_lock_assert_owned(path->bus->sim->lock);
4154 sbuf_new(&sb, str, str_len, 0);
4157 sbuf_printf(&sb, "(nopath): ");
4159 if (path->periph != NULL)
4160 sbuf_printf(&sb, "(%s%d:", path->periph->periph_name,
4161 path->periph->unit_number);
4163 sbuf_printf(&sb, "(noperiph:");
4165 if (path->bus != NULL)
4166 sbuf_printf(&sb, "%s%d:%d:", path->bus->sim->sim_name,
4167 path->bus->sim->unit_number,
4168 path->bus->sim->bus_id);
4170 sbuf_printf(&sb, "nobus:");
4172 if (path->target != NULL)
4173 sbuf_printf(&sb, "%d:", path->target->target_id);
4175 sbuf_printf(&sb, "X:");
4177 if (path->device != NULL)
4178 sbuf_printf(&sb, "%d): ", path->device->lun_id);
4180 sbuf_printf(&sb, "X): ");
4184 return(sbuf_len(&sb));
4188 xpt_path_path_id(struct cam_path *path)
4190 sim_lock_assert_owned(path->bus->sim->lock);
4192 return(path->bus->path_id);
4196 xpt_path_target_id(struct cam_path *path)
4198 sim_lock_assert_owned(path->bus->sim->lock);
4200 if (path->target != NULL)
4201 return (path->target->target_id);
4203 return (CAM_TARGET_WILDCARD);
4207 xpt_path_lun_id(struct cam_path *path)
4209 sim_lock_assert_owned(path->bus->sim->lock);
4211 if (path->device != NULL)
4212 return (path->device->lun_id);
4214 return (CAM_LUN_WILDCARD);
4218 xpt_path_sim(struct cam_path *path)
4220 return (path->bus->sim);
4224 xpt_path_periph(struct cam_path *path)
4226 sim_lock_assert_owned(path->bus->sim->lock);
4228 return (path->periph);
4232 * Release a CAM control block for the caller. Remit the cost of the structure
4233 * to the device referenced by the path. If the this device had no 'credits'
4234 * and peripheral drivers have registered async callbacks for this notification
4238 xpt_release_ccb(union ccb *free_ccb)
4240 struct cam_path *path;
4241 struct cam_ed *device;
4243 struct cam_sim *sim;
4245 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_release_ccb\n"));
4246 path = free_ccb->ccb_h.path;
4247 device = path->device;
4251 sim_lock_assert_owned(sim->lock);
4253 cam_ccbq_release_opening(&device->ccbq);
4254 if (sim->ccb_count > sim->max_ccbs) {
4255 xpt_free_ccb(free_ccb);
4257 } else if (sim == &cam_dead_sim) {
4258 xpt_free_ccb(free_ccb);
4260 SLIST_INSERT_HEAD(&sim->ccb_freeq, &free_ccb->ccb_h,
4263 if (sim->devq == NULL) {
4266 sim->devq->alloc_openings++;
4267 sim->devq->alloc_active--;
4268 /* XXX Turn this into an inline function - xpt_run_device?? */
4269 if ((device_is_alloc_queued(device) == 0)
4270 && (device->drvq.entries > 0)) {
4271 xpt_schedule_dev_allocq(bus, device);
4273 if (dev_allocq_is_runnable(sim->devq))
4274 xpt_run_dev_allocq(bus);
4277 /* Functions accessed by SIM drivers */
4280 * A sim structure, listing the SIM entry points and instance
4281 * identification info is passed to xpt_bus_register to hook the SIM
4282 * into the CAM framework. xpt_bus_register creates a cam_eb entry
4283 * for this new bus and places it in the array of busses and assigns
4284 * it a path_id. The path_id may be influenced by "hard wiring"
4285 * information specified by the user. Once interrupt services are
4286 * availible, the bus will be probed.
4289 xpt_bus_register(struct cam_sim *sim, u_int32_t bus)
4291 struct cam_eb *new_bus;
4292 struct cam_eb *old_bus;
4293 struct ccb_pathinq cpi;
4295 sim_lock_assert_owned(sim->lock);
4298 new_bus = kmalloc(sizeof(*new_bus), M_CAMXPT, M_INTWAIT);
4300 if (strcmp(sim->sim_name, "xpt") != 0) {
4302 xptpathid(sim->sim_name, sim->unit_number, sim->bus_id);
4305 TAILQ_INIT(&new_bus->et_entries);
4306 new_bus->path_id = sim->path_id;
4309 timevalclear(&new_bus->last_reset);
4311 new_bus->refcount = 1; /* Held until a bus_deregister event */
4312 new_bus->generation = 0;
4313 lockmgr(&xsoftc.xpt_topo_lock, LK_EXCLUSIVE);
4314 old_bus = TAILQ_FIRST(&xsoftc.xpt_busses);
4315 while (old_bus != NULL
4316 && old_bus->path_id < new_bus->path_id)
4317 old_bus = TAILQ_NEXT(old_bus, links);
4318 if (old_bus != NULL)
4319 TAILQ_INSERT_BEFORE(old_bus, new_bus, links);
4321 TAILQ_INSERT_TAIL(&xsoftc.xpt_busses, new_bus, links);
4322 xsoftc.bus_generation++;
4323 lockmgr(&xsoftc.xpt_topo_lock, LK_RELEASE);
4325 /* Notify interested parties */
4326 if (sim->path_id != CAM_XPT_PATH_ID) {
4327 struct cam_path path;
4329 xpt_compile_path(&path, /*periph*/NULL, sim->path_id,
4330 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
4331 xpt_setup_ccb(&cpi.ccb_h, &path, /*priority*/1);
4332 cpi.ccb_h.func_code = XPT_PATH_INQ;
4333 xpt_action((union ccb *)&cpi);
4334 xpt_async(AC_PATH_REGISTERED, &path, &cpi);
4335 xpt_release_path(&path);
4337 return (CAM_SUCCESS);
4341 * Deregister a bus. We must clean out all transactions pending on the bus.
4342 * This routine is typically called prior to cam_sim_free() (e.g. see
4343 * dev/usbmisc/umass/umass.c)
4346 xpt_bus_deregister(path_id_t pathid)
4348 struct cam_path bus_path;
4349 struct cam_et *target;
4350 struct cam_ed *device;
4351 struct cam_ed_qinfo *qinfo;
4352 struct cam_devq *devq;
4353 struct cam_periph *periph;
4354 struct cam_sim *ccbsim;
4355 union ccb *work_ccb;
4359 status = xpt_compile_path(&bus_path, NULL, pathid,
4360 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
4361 if (status != CAM_REQ_CMP)
4365 * This should clear out all pending requests and timeouts, but
4366 * the ccb's may be queued to a software interrupt.
4368 * XXX AC_LOST_DEVICE does not precisely abort the pending requests,
4369 * and it really ought to.
4371 xpt_async(AC_LOST_DEVICE, &bus_path, NULL);
4372 xpt_async(AC_PATH_DEREGISTERED, &bus_path, NULL);
4375 * Mark the SIM as having been deregistered. This prevents
4376 * certain operations from re-queueing to it, stops new devices
4377 * from being added, etc.
4379 devq = bus_path.bus->sim->devq;
4380 ccbsim = bus_path.bus->sim;
4381 ccbsim->flags |= CAM_SIM_DEREGISTERED;
4385 * Execute any pending operations now.
4387 while ((qinfo = (struct cam_ed_qinfo *)camq_remove(&devq->send_queue,
4388 CAMQ_HEAD)) != NULL ||
4389 (qinfo = (struct cam_ed_qinfo *)camq_remove(&devq->alloc_queue,
4390 CAMQ_HEAD)) != NULL) {
4392 device = qinfo->device;
4393 work_ccb = cam_ccbq_peek_ccb(&device->ccbq, CAMQ_HEAD);
4394 if (work_ccb != NULL) {
4395 devq->active_dev = device;
4396 cam_ccbq_remove_ccb(&device->ccbq, work_ccb);
4397 cam_ccbq_send_ccb(&device->ccbq, work_ccb);
4398 (*(ccbsim->sim_action))(ccbsim, work_ccb);
4401 periph = (struct cam_periph *)camq_remove(&device->drvq,
4404 xpt_schedule(periph, periph->pinfo.priority);
4405 } while (work_ccb != NULL || periph != NULL);
4409 * Make sure all completed CCBs are processed.
4411 while (!TAILQ_EMPTY(&ccbsim->sim_doneq)) {
4412 camisr_runqueue(ccbsim);
4416 * Check for requeues, reissues asyncs if necessary
4418 if (CAMQ_GET_HEAD(&devq->send_queue))
4419 kprintf("camq: devq send_queue still in use (%d entries)\n",
4420 devq->send_queue.entries);
4421 if (CAMQ_GET_HEAD(&devq->alloc_queue))
4422 kprintf("camq: devq alloc_queue still in use (%d entries)\n",
4423 devq->alloc_queue.entries);
4424 if (CAMQ_GET_HEAD(&devq->send_queue) ||
4425 CAMQ_GET_HEAD(&devq->alloc_queue)) {
4426 if (++retries < 5) {
4427 xpt_async(AC_LOST_DEVICE, &bus_path, NULL);
4428 xpt_async(AC_PATH_DEREGISTERED, &bus_path, NULL);
4434 * Retarget the bus and all cached sim pointers to dead_sim.
4436 * Various CAM subsystems may be holding on to targets, devices,
4437 * and/or peripherals and may attempt to use the sim pointer cached
4438 * in some of these structures during close.
4440 bus_path.bus->sim = &cam_dead_sim;
4441 TAILQ_FOREACH(target, &bus_path.bus->et_entries, links) {
4442 TAILQ_FOREACH(device, &target->ed_entries, links) {
4443 device->sim = &cam_dead_sim;
4444 SLIST_FOREACH(periph, &device->periphs, periph_links) {
4445 periph->sim = &cam_dead_sim;
4451 * Repeat the async's for the benefit of any new devices, such as
4452 * might be created from completed probes. Any new device
4453 * ops will run on dead_sim.
4455 * XXX There are probably races :-(
4457 CAM_SIM_LOCK(&cam_dead_sim);
4458 xpt_async(AC_LOST_DEVICE, &bus_path, NULL);
4459 xpt_async(AC_PATH_DEREGISTERED, &bus_path, NULL);
4460 CAM_SIM_UNLOCK(&cam_dead_sim);
4462 /* Release the reference count held while registered. */
4463 xpt_release_bus(bus_path.bus);
4464 xpt_release_path(&bus_path);
4466 /* Release the ref we got when the bus was registered */
4467 cam_sim_release(ccbsim, 0);
4469 return (CAM_REQ_CMP);
4473 xptnextfreepathid(void)
4480 lockmgr(&xsoftc.xpt_topo_lock, LK_EXCLUSIVE);
4481 bus = TAILQ_FIRST(&xsoftc.xpt_busses);
4483 /* Find an unoccupied pathid */
4484 while (bus != NULL && bus->path_id <= pathid) {
4485 if (bus->path_id == pathid)
4487 bus = TAILQ_NEXT(bus, links);
4489 lockmgr(&xsoftc.xpt_topo_lock, LK_RELEASE);
4492 * Ensure that this pathid is not reserved for
4493 * a bus that may be registered in the future.
4495 if (resource_string_value("scbus", pathid, "at", &strval) == 0) {
4497 /* Start the search over */
4498 lockmgr(&xsoftc.xpt_topo_lock, LK_EXCLUSIVE);
4505 xptpathid(const char *sim_name, int sim_unit, int sim_bus)
4511 pathid = CAM_XPT_PATH_ID;
4512 ksnprintf(buf, sizeof(buf), "%s%d", sim_name, sim_unit);
4514 while ((i = resource_query_string(i, "at", buf)) != -1) {
4515 if (strcmp(resource_query_name(i), "scbus")) {
4516 /* Avoid a bit of foot shooting. */
4519 dunit = resource_query_unit(i);
4520 if (dunit < 0) /* unwired?! */
4522 if (resource_int_value("scbus", dunit, "bus", &val) == 0) {
4523 if (sim_bus == val) {
4527 } else if (sim_bus == 0) {
4528 /* Unspecified matches bus 0 */
4532 kprintf("Ambiguous scbus configuration for %s%d "
4533 "bus %d, cannot wire down. The kernel "
4534 "config entry for scbus%d should "
4535 "specify a controller bus.\n"
4536 "Scbus will be assigned dynamically.\n",
4537 sim_name, sim_unit, sim_bus, dunit);
4542 if (pathid == CAM_XPT_PATH_ID)
4543 pathid = xptnextfreepathid();
4548 xpt_async(u_int32_t async_code, struct cam_path *path, void *async_arg)
4551 struct cam_et *target, *next_target;
4552 struct cam_ed *device, *next_device;
4554 sim_lock_assert_owned(path->bus->sim->lock);
4556 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_async\n"));
4559 * Most async events come from a CAM interrupt context. In
4560 * a few cases, the error recovery code at the peripheral layer,
4561 * which may run from our SWI or a process context, may signal
4562 * deferred events with a call to xpt_async.
4567 if (async_code == AC_BUS_RESET) {
4568 /* Update our notion of when the last reset occurred */
4569 microuptime(&bus->last_reset);
4572 for (target = TAILQ_FIRST(&bus->et_entries);
4574 target = next_target) {
4576 next_target = TAILQ_NEXT(target, links);
4578 if (path->target != target
4579 && path->target->target_id != CAM_TARGET_WILDCARD
4580 && target->target_id != CAM_TARGET_WILDCARD)
4583 if (async_code == AC_SENT_BDR) {
4584 /* Update our notion of when the last reset occurred */
4585 microuptime(&path->target->last_reset);
4588 for (device = TAILQ_FIRST(&target->ed_entries);
4590 device = next_device) {
4592 next_device = TAILQ_NEXT(device, links);
4594 if (path->device != device
4595 && path->device->lun_id != CAM_LUN_WILDCARD
4596 && device->lun_id != CAM_LUN_WILDCARD)
4599 xpt_dev_async(async_code, bus, target,
4602 xpt_async_bcast(&device->asyncs, async_code,
4608 * If this wasn't a fully wildcarded async, tell all
4609 * clients that want all async events.
4611 if (bus != xpt_periph->path->bus)
4612 xpt_async_bcast(&xpt_periph->path->device->asyncs, async_code,
4617 xpt_async_bcast(struct async_list *async_head,
4618 u_int32_t async_code,
4619 struct cam_path *path, void *async_arg)
4621 struct async_node *cur_entry;
4623 cur_entry = SLIST_FIRST(async_head);
4624 while (cur_entry != NULL) {
4625 struct async_node *next_entry;
4627 * Grab the next list entry before we call the current
4628 * entry's callback. This is because the callback function
4629 * can delete its async callback entry.
4631 next_entry = SLIST_NEXT(cur_entry, links);
4632 if ((cur_entry->event_enable & async_code) != 0)
4633 cur_entry->callback(cur_entry->callback_arg,
4636 cur_entry = next_entry;
4641 * Handle any per-device event notifications that require action by the XPT.
4644 xpt_dev_async(u_int32_t async_code, struct cam_eb *bus, struct cam_et *target,
4645 struct cam_ed *device, void *async_arg)
4648 struct cam_path newpath;
4651 * We only need to handle events for real devices.
4653 if (target->target_id == CAM_TARGET_WILDCARD
4654 || device->lun_id == CAM_LUN_WILDCARD)
4658 * We need our own path with wildcards expanded to
4659 * handle certain types of events.
4661 if ((async_code == AC_SENT_BDR)
4662 || (async_code == AC_BUS_RESET)
4663 || (async_code == AC_INQ_CHANGED))
4664 status = xpt_compile_path(&newpath, NULL,
4669 status = CAM_REQ_CMP_ERR;
4671 if (status == CAM_REQ_CMP) {
4674 * Allow transfer negotiation to occur in a
4675 * tag free environment.
4677 if (async_code == AC_SENT_BDR
4678 || async_code == AC_BUS_RESET)
4679 xpt_toggle_tags(&newpath);
4681 if (async_code == AC_INQ_CHANGED) {
4683 * We've sent a start unit command, or
4684 * something similar to a device that
4685 * may have caused its inquiry data to
4686 * change. So we re-scan the device to
4687 * refresh the inquiry data for it.
4689 xpt_scan_lun(newpath.periph, &newpath,
4690 CAM_EXPECT_INQ_CHANGE, NULL);
4692 xpt_release_path(&newpath);
4693 } else if (async_code == AC_LOST_DEVICE) {
4695 * When we lose a device the device may be about to detach
4696 * the sim, we have to clear out all pending timeouts and
4697 * requests before that happens. XXX it would be nice if
4698 * we could abort the requests pertaining to the device.
4700 xpt_release_devq_timeout(device);
4701 if ((device->flags & CAM_DEV_UNCONFIGURED) == 0) {
4702 device->flags |= CAM_DEV_UNCONFIGURED;
4703 xpt_release_device(bus, target, device);
4705 } else if (async_code == AC_TRANSFER_NEG) {
4706 struct ccb_trans_settings *settings;
4708 settings = (struct ccb_trans_settings *)async_arg;
4709 xpt_set_transfer_settings(settings, device,
4710 /*async_update*/TRUE);
4715 xpt_freeze_devq(struct cam_path *path, u_int count)
4717 struct ccb_hdr *ccbh;
4719 sim_lock_assert_owned(path->bus->sim->lock);
4721 path->device->qfrozen_cnt += count;
4724 * Mark the last CCB in the queue as needing
4725 * to be requeued if the driver hasn't
4726 * changed it's state yet. This fixes a race
4727 * where a ccb is just about to be queued to
4728 * a controller driver when it's interrupt routine
4729 * freezes the queue. To completly close the
4730 * hole, controller drives must check to see
4731 * if a ccb's status is still CAM_REQ_INPROG
4732 * just before they queue
4733 * the CCB. See ahc_action/ahc_freeze_devq for
4736 ccbh = TAILQ_LAST(&path->device->ccbq.active_ccbs, ccb_hdr_tailq);
4737 if (ccbh && ccbh->status == CAM_REQ_INPROG)
4738 ccbh->status = CAM_REQUEUE_REQ;
4739 return (path->device->qfrozen_cnt);
4743 xpt_freeze_simq(struct cam_sim *sim, u_int count)
4745 sim_lock_assert_owned(sim->lock);
4747 if (sim->devq == NULL)
4749 sim->devq->send_queue.qfrozen_cnt += count;
4750 if (sim->devq->active_dev != NULL) {
4751 struct ccb_hdr *ccbh;
4753 ccbh = TAILQ_LAST(&sim->devq->active_dev->ccbq.active_ccbs,
4755 if (ccbh && ccbh->status == CAM_REQ_INPROG)
4756 ccbh->status = CAM_REQUEUE_REQ;
4758 return (sim->devq->send_queue.qfrozen_cnt);
4762 * WARNING: most devices, especially USB/UMASS, may detach their sim early.
4763 * We ref-count the sim (and the bus only NULLs it out when the bus has been
4764 * freed, which is not the case here), but the device queue is also freed XXX
4765 * and we have to check that here.
4767 * XXX fixme: could we simply not null-out the device queue via
4771 xpt_release_devq_timeout(void *arg)
4773 struct cam_ed *device;
4775 device = (struct cam_ed *)arg;
4777 xpt_release_devq_device(device, /*count*/1, /*run_queue*/TRUE);
4781 xpt_release_devq(struct cam_path *path, u_int count, int run_queue)
4783 sim_lock_assert_owned(path->bus->sim->lock);
4785 xpt_release_devq_device(path->device, count, run_queue);
4789 xpt_release_devq_device(struct cam_ed *dev, u_int count, int run_queue)
4795 if (dev->qfrozen_cnt > 0) {
4797 count = (count > dev->qfrozen_cnt) ? dev->qfrozen_cnt : count;
4798 dev->qfrozen_cnt -= count;
4799 if (dev->qfrozen_cnt == 0) {
4802 * No longer need to wait for a successful
4803 * command completion.
4805 dev->flags &= ~CAM_DEV_REL_ON_COMPLETE;
4808 * Remove any timeouts that might be scheduled
4809 * to release this queue.
4811 if ((dev->flags & CAM_DEV_REL_TIMEOUT_PENDING) != 0) {
4812 callout_stop(&dev->callout);
4813 dev->flags &= ~CAM_DEV_REL_TIMEOUT_PENDING;
4817 * Now that we are unfrozen schedule the
4818 * device so any pending transactions are
4821 if ((dev->ccbq.queue.entries > 0)
4822 && (xpt_schedule_dev_sendq(dev->target->bus, dev))
4823 && (run_queue != 0)) {
4829 xpt_run_dev_sendq(dev->target->bus);
4833 xpt_release_simq(struct cam_sim *sim, int run_queue)
4837 sim_lock_assert_owned(sim->lock);
4839 if (sim->devq == NULL)
4842 sendq = &(sim->devq->send_queue);
4843 if (sendq->qfrozen_cnt > 0) {
4844 sendq->qfrozen_cnt--;
4845 if (sendq->qfrozen_cnt == 0) {
4849 * If there is a timeout scheduled to release this
4850 * sim queue, remove it. The queue frozen count is
4853 if ((sim->flags & CAM_SIM_REL_TIMEOUT_PENDING) != 0){
4854 callout_stop(&sim->callout);
4855 sim->flags &= ~CAM_SIM_REL_TIMEOUT_PENDING;
4857 bus = xpt_find_bus(sim->path_id);
4861 * Now that we are unfrozen run the send queue.
4863 xpt_run_dev_sendq(bus);
4865 xpt_release_bus(bus);
4871 xpt_done(union ccb *done_ccb)
4873 struct cam_sim *sim;
4875 CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("xpt_done\n"));
4876 if ((done_ccb->ccb_h.func_code & XPT_FC_QUEUED) != 0) {
4878 * Queue up the request for handling by our SWI handler
4879 * any of the "non-immediate" type of ccbs.
4881 sim = done_ccb->ccb_h.path->bus->sim;
4882 switch (done_ccb->ccb_h.path->periph->type) {
4883 case CAM_PERIPH_BIO:
4884 spin_lock_wr(&sim->sim_spin);
4885 TAILQ_INSERT_TAIL(&sim->sim_doneq, &done_ccb->ccb_h,
4887 done_ccb->ccb_h.pinfo.index = CAM_DONEQ_INDEX;
4888 spin_unlock_wr(&sim->sim_spin);
4889 if ((sim->flags & CAM_SIM_ON_DONEQ) == 0) {
4890 spin_lock_wr(&cam_simq_spin);
4891 if ((sim->flags & CAM_SIM_ON_DONEQ) == 0) {
4892 TAILQ_INSERT_TAIL(&cam_simq, sim,
4894 sim->flags |= CAM_SIM_ON_DONEQ;
4896 spin_unlock_wr(&cam_simq_spin);
4898 if ((done_ccb->ccb_h.path->periph->flags &
4899 CAM_PERIPH_POLLED) == 0)
4903 panic("unknown periph type %d",
4904 done_ccb->ccb_h.path->periph->type);
4914 new_ccb = kmalloc(sizeof(*new_ccb), M_CAMXPT, M_INTWAIT | M_ZERO);
4919 xpt_free_ccb(union ccb *free_ccb)
4921 kfree(free_ccb, M_CAMXPT);
4926 /* Private XPT functions */
4929 * Get a CAM control block for the caller. Charge the structure to the device
4930 * referenced by the path. If the this device has no 'credits' then the
4931 * device already has the maximum number of outstanding operations under way
4932 * and we return NULL. If we don't have sufficient resources to allocate more
4933 * ccbs, we also return NULL.
4936 xpt_get_ccb(struct cam_ed *device)
4939 struct cam_sim *sim;
4942 if ((new_ccb = (union ccb *)SLIST_FIRST(&sim->ccb_freeq)) == NULL) {
4943 new_ccb = xpt_alloc_ccb();
4944 if ((sim->flags & CAM_SIM_MPSAFE) == 0)
4945 callout_init(&new_ccb->ccb_h.timeout_ch);
4946 SLIST_INSERT_HEAD(&sim->ccb_freeq, &new_ccb->ccb_h,
4950 cam_ccbq_take_opening(&device->ccbq);
4951 SLIST_REMOVE_HEAD(&sim->ccb_freeq, xpt_links.sle);
4956 xpt_release_bus(struct cam_eb *bus)
4959 if ((--bus->refcount == 0)
4960 && (TAILQ_FIRST(&bus->et_entries) == NULL)) {
4961 lockmgr(&xsoftc.xpt_topo_lock, LK_EXCLUSIVE);
4962 TAILQ_REMOVE(&xsoftc.xpt_busses, bus, links);
4963 xsoftc.bus_generation++;
4964 lockmgr(&xsoftc.xpt_topo_lock, LK_RELEASE);
4965 kfree(bus, M_CAMXPT);
4969 static struct cam_et *
4970 xpt_alloc_target(struct cam_eb *bus, target_id_t target_id)
4972 struct cam_et *target;
4973 struct cam_et *cur_target;
4975 target = kmalloc(sizeof(*target), M_CAMXPT, M_INTWAIT);
4977 TAILQ_INIT(&target->ed_entries);
4979 target->target_id = target_id;
4980 target->refcount = 1;
4981 target->generation = 0;
4982 timevalclear(&target->last_reset);
4984 * Hold a reference to our parent bus so it
4985 * will not go away before we do.
4989 /* Insertion sort into our bus's target list */
4990 cur_target = TAILQ_FIRST(&bus->et_entries);
4991 while (cur_target != NULL && cur_target->target_id < target_id)
4992 cur_target = TAILQ_NEXT(cur_target, links);
4994 if (cur_target != NULL) {
4995 TAILQ_INSERT_BEFORE(cur_target, target, links);
4997 TAILQ_INSERT_TAIL(&bus->et_entries, target, links);
5004 xpt_release_target(struct cam_eb *bus, struct cam_et *target)
5006 if (target->refcount == 1) {
5007 KKASSERT(TAILQ_FIRST(&target->ed_entries) == NULL);
5008 TAILQ_REMOVE(&bus->et_entries, target, links);
5010 xpt_release_bus(bus);
5011 KKASSERT(target->refcount == 1);
5012 kfree(target, M_CAMXPT);
5018 static struct cam_ed *
5019 xpt_alloc_device(struct cam_eb *bus, struct cam_et *target, lun_id_t lun_id)
5021 struct cam_path path;
5022 struct cam_ed *device;
5023 struct cam_devq *devq;
5027 * Disallow new devices while trying to deregister a sim
5029 if (bus->sim->flags & CAM_SIM_DEREGISTERED)
5033 * Make space for us in the device queue on our bus
5035 devq = bus->sim->devq;
5038 status = cam_devq_resize(devq, devq->alloc_queue.array_size + 1);
5040 if (status != CAM_REQ_CMP) {
5043 device = kmalloc(sizeof(*device), M_CAMXPT, M_INTWAIT);
5046 if (device != NULL) {
5047 struct cam_ed *cur_device;
5049 cam_init_pinfo(&device->alloc_ccb_entry.pinfo);
5050 device->alloc_ccb_entry.device = device;
5051 cam_init_pinfo(&device->send_ccb_entry.pinfo);
5052 device->send_ccb_entry.device = device;
5053 device->target = target;
5054 device->lun_id = lun_id;
5055 device->sim = bus->sim;
5056 /* Initialize our queues */
5057 if (camq_init(&device->drvq, 0) != 0) {
5058 kfree(device, M_CAMXPT);
5061 if (cam_ccbq_init(&device->ccbq,
5062 bus->sim->max_dev_openings) != 0) {
5063 camq_fini(&device->drvq);
5064 kfree(device, M_CAMXPT);
5067 SLIST_INIT(&device->asyncs);
5068 SLIST_INIT(&device->periphs);
5069 device->generation = 0;
5070 device->owner = NULL;
5072 * Take the default quirk entry until we have inquiry
5073 * data and can determine a better quirk to use.
5075 device->quirk = &xpt_quirk_table[xpt_quirk_table_size - 1];
5076 bzero(&device->inq_data, sizeof(device->inq_data));
5077 device->inq_flags = 0;
5078 device->queue_flags = 0;
5079 device->serial_num = NULL;
5080 device->serial_num_len = 0;
5081 device->qfrozen_cnt = 0;
5082 device->flags = CAM_DEV_UNCONFIGURED;
5083 device->tag_delay_count = 0;
5084 device->tag_saved_openings = 0;
5085 device->refcount = 1;
5086 callout_init(&device->callout);
5089 * Hold a reference to our parent target so it
5090 * will not go away before we do.
5095 * XXX should be limited by number of CCBs this bus can
5098 bus->sim->max_ccbs += device->ccbq.devq_openings;
5099 /* Insertion sort into our target's device list */
5100 cur_device = TAILQ_FIRST(&target->ed_entries);
5101 while (cur_device != NULL && cur_device->lun_id < lun_id)
5102 cur_device = TAILQ_NEXT(cur_device, links);
5103 if (cur_device != NULL) {
5104 TAILQ_INSERT_BEFORE(cur_device, device, links);
5106 TAILQ_INSERT_TAIL(&target->ed_entries, device, links);
5108 target->generation++;
5109 if (lun_id != CAM_LUN_WILDCARD) {
5110 xpt_compile_path(&path,
5115 xpt_devise_transport(&path);
5116 xpt_release_path(&path);
5123 xpt_reference_device(struct cam_ed *device)
5129 xpt_release_device(struct cam_eb *bus, struct cam_et *target,
5130 struct cam_ed *device)
5132 struct cam_devq *devq;
5134 if (device->refcount == 1) {
5135 KKASSERT(device->flags & CAM_DEV_UNCONFIGURED);
5137 if (device->alloc_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX
5138 || device->send_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX)
5139 panic("Removing device while still queued for ccbs");
5141 if ((device->flags & CAM_DEV_REL_TIMEOUT_PENDING) != 0) {
5142 device->flags &= ~CAM_DEV_REL_TIMEOUT_PENDING;
5143 callout_stop(&device->callout);
5146 TAILQ_REMOVE(&target->ed_entries, device,links);
5147 target->generation++;
5148 bus->sim->max_ccbs -= device->ccbq.devq_openings;
5149 if ((devq = bus->sim->devq) != NULL) {
5150 /* Release our slot in the devq */
5151 cam_devq_resize(devq, devq->alloc_queue.array_size - 1);
5153 camq_fini(&device->drvq);
5154 camq_fini(&device->ccbq.queue);
5155 xpt_release_target(bus, target);
5156 KKASSERT(device->refcount == 1);
5157 kfree(device, M_CAMXPT);
5164 xpt_dev_ccbq_resize(struct cam_path *path, int newopenings)
5172 diff = newopenings - (dev->ccbq.dev_active + dev->ccbq.dev_openings);
5173 result = cam_ccbq_resize(&dev->ccbq, newopenings);
5174 if (result == CAM_REQ_CMP && (diff < 0)) {
5175 dev->flags |= CAM_DEV_RESIZE_QUEUE_NEEDED;
5177 if ((dev->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
5178 || (dev->inq_flags & SID_CmdQue) != 0)
5179 dev->tag_saved_openings = newopenings;
5180 /* Adjust the global limit */
5181 dev->sim->max_ccbs += diff;
5185 static struct cam_eb *
5186 xpt_find_bus(path_id_t path_id)
5190 lockmgr(&xsoftc.xpt_topo_lock, LK_EXCLUSIVE);
5191 TAILQ_FOREACH(bus, &xsoftc.xpt_busses, links) {
5192 if (bus->path_id == path_id) {
5197 lockmgr(&xsoftc.xpt_topo_lock, LK_RELEASE);
5201 static struct cam_et *
5202 xpt_find_target(struct cam_eb *bus, target_id_t target_id)
5204 struct cam_et *target;
5206 TAILQ_FOREACH(target, &bus->et_entries, links) {
5207 if (target->target_id == target_id) {
5215 static struct cam_ed *
5216 xpt_find_device(struct cam_et *target, lun_id_t lun_id)
5218 struct cam_ed *device;
5220 TAILQ_FOREACH(device, &target->ed_entries, links) {
5221 if (device->lun_id == lun_id) {
5230 union ccb *request_ccb;
5231 struct ccb_pathinq *cpi;
5233 } xpt_scan_bus_info;
5236 * To start a scan, request_ccb is an XPT_SCAN_BUS ccb.
5237 * As the scan progresses, xpt_scan_bus is used as the
5238 * callback on completion function.
5241 xpt_scan_bus(struct cam_periph *periph, union ccb *request_ccb)
5243 CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE,
5244 ("xpt_scan_bus\n"));
5245 switch (request_ccb->ccb_h.func_code) {
5248 xpt_scan_bus_info *scan_info;
5249 union ccb *work_ccb;
5250 struct cam_path *path;
5255 /* Find out the characteristics of the bus */
5256 work_ccb = xpt_alloc_ccb();
5257 xpt_setup_ccb(&work_ccb->ccb_h, request_ccb->ccb_h.path,
5258 request_ccb->ccb_h.pinfo.priority);
5259 work_ccb->ccb_h.func_code = XPT_PATH_INQ;
5260 xpt_action(work_ccb);
5261 if (work_ccb->ccb_h.status != CAM_REQ_CMP) {
5262 request_ccb->ccb_h.status = work_ccb->ccb_h.status;
5263 xpt_free_ccb(work_ccb);
5264 xpt_done(request_ccb);
5268 if ((work_ccb->cpi.hba_misc & PIM_NOINITIATOR) != 0) {
5270 * Can't scan the bus on an adapter that
5271 * cannot perform the initiator role.
5273 request_ccb->ccb_h.status = CAM_REQ_CMP;
5274 xpt_free_ccb(work_ccb);
5275 xpt_done(request_ccb);
5279 /* Save some state for use while we probe for devices */
5280 scan_info = (xpt_scan_bus_info *)
5281 kmalloc(sizeof(xpt_scan_bus_info), M_CAMXPT, M_INTWAIT);
5282 scan_info->request_ccb = request_ccb;
5283 scan_info->cpi = &work_ccb->cpi;
5285 /* Cache on our stack so we can work asynchronously */
5286 max_target = scan_info->cpi->max_target;
5287 initiator_id = scan_info->cpi->initiator_id;
5291 * We can scan all targets in parallel, or do it sequentially.
5293 if (scan_info->cpi->hba_misc & PIM_SEQSCAN) {
5295 scan_info->counter = 0;
5297 scan_info->counter = scan_info->cpi->max_target + 1;
5298 if (scan_info->cpi->initiator_id < scan_info->counter) {
5299 scan_info->counter--;
5303 for (i = 0; i <= max_target; i++) {
5305 if (i == initiator_id)
5308 status = xpt_create_path(&path, xpt_periph,
5309 request_ccb->ccb_h.path_id,
5311 if (status != CAM_REQ_CMP) {
5312 kprintf("xpt_scan_bus: xpt_create_path failed"
5313 " with status %#x, bus scan halted\n",
5315 kfree(scan_info, M_CAMXPT);
5316 request_ccb->ccb_h.status = status;
5317 xpt_free_ccb(work_ccb);
5318 xpt_done(request_ccb);
5321 work_ccb = xpt_alloc_ccb();
5322 xpt_setup_ccb(&work_ccb->ccb_h, path,
5323 request_ccb->ccb_h.pinfo.priority);
5324 work_ccb->ccb_h.func_code = XPT_SCAN_LUN;
5325 work_ccb->ccb_h.cbfcnp = xpt_scan_bus;
5326 work_ccb->ccb_h.ppriv_ptr0 = scan_info;
5327 work_ccb->crcn.flags = request_ccb->crcn.flags;
5328 xpt_action(work_ccb);
5335 struct cam_path *path;
5336 xpt_scan_bus_info *scan_info;
5338 target_id_t target_id;
5341 /* Reuse the same CCB to query if a device was really found */
5342 scan_info = (xpt_scan_bus_info *)request_ccb->ccb_h.ppriv_ptr0;
5343 xpt_setup_ccb(&request_ccb->ccb_h, request_ccb->ccb_h.path,
5344 request_ccb->ccb_h.pinfo.priority);
5345 request_ccb->ccb_h.func_code = XPT_GDEV_TYPE;
5347 path_id = request_ccb->ccb_h.path_id;
5348 target_id = request_ccb->ccb_h.target_id;
5349 lun_id = request_ccb->ccb_h.target_lun;
5350 xpt_action(request_ccb);
5352 if (request_ccb->ccb_h.status != CAM_REQ_CMP) {
5353 struct cam_ed *device;
5354 struct cam_et *target;
5358 * If we already probed lun 0 successfully, or
5359 * we have additional configured luns on this
5360 * target that might have "gone away", go onto
5363 target = request_ccb->ccb_h.path->target;
5365 * We may touch devices that we don't
5366 * hold references too, so ensure they
5367 * don't disappear out from under us.
5368 * The target above is referenced by the
5369 * path in the request ccb.
5372 device = TAILQ_FIRST(&target->ed_entries);
5373 if (device != NULL) {
5374 phl = CAN_SRCH_HI_SPARSE(device);
5375 if (device->lun_id == 0)
5376 device = TAILQ_NEXT(device, links);
5378 if ((lun_id != 0) || (device != NULL)) {
5379 if (lun_id < (CAM_SCSI2_MAXLUN-1) || phl)
5383 struct cam_ed *device;
5385 device = request_ccb->ccb_h.path->device;
5387 if ((device->quirk->quirks & CAM_QUIRK_NOLUNS) == 0) {
5388 /* Try the next lun */
5389 if (lun_id < (CAM_SCSI2_MAXLUN-1)
5390 || CAN_SRCH_HI_DENSE(device))
5396 * Free the current request path- we're done with it.
5398 xpt_free_path(request_ccb->ccb_h.path);
5401 * Check to see if we scan any further luns.
5403 if (lun_id == request_ccb->ccb_h.target_lun
5404 || lun_id > scan_info->cpi->max_lun) {
5409 if (scan_info->cpi->hba_misc & PIM_SEQSCAN) {
5410 scan_info->counter++;
5411 if (scan_info->counter ==
5412 scan_info->cpi->initiator_id) {
5413 scan_info->counter++;
5415 if (scan_info->counter >=
5416 scan_info->cpi->max_target+1) {
5420 scan_info->counter--;
5421 if (scan_info->counter == 0) {
5426 xpt_free_ccb(request_ccb);
5427 xpt_free_ccb((union ccb *)scan_info->cpi);
5428 request_ccb = scan_info->request_ccb;
5429 kfree(scan_info, M_CAMXPT);
5430 request_ccb->ccb_h.status = CAM_REQ_CMP;
5431 xpt_done(request_ccb);
5435 if ((scan_info->cpi->hba_misc & PIM_SEQSCAN) == 0) {
5438 status = xpt_create_path(&path, xpt_periph,
5439 scan_info->request_ccb->ccb_h.path_id,
5440 scan_info->counter, 0);
5441 if (status != CAM_REQ_CMP) {
5442 kprintf("xpt_scan_bus: xpt_create_path failed"
5443 " with status %#x, bus scan halted\n",
5445 xpt_free_ccb(request_ccb);
5446 xpt_free_ccb((union ccb *)scan_info->cpi);
5447 request_ccb = scan_info->request_ccb;
5448 kfree(scan_info, M_CAMXPT);
5449 request_ccb->ccb_h.status = status;
5450 xpt_done(request_ccb);
5453 xpt_setup_ccb(&request_ccb->ccb_h, path,
5454 request_ccb->ccb_h.pinfo.priority);
5455 request_ccb->ccb_h.func_code = XPT_SCAN_LUN;
5456 request_ccb->ccb_h.cbfcnp = xpt_scan_bus;
5457 request_ccb->ccb_h.ppriv_ptr0 = scan_info;
5458 request_ccb->crcn.flags =
5459 scan_info->request_ccb->crcn.flags;
5461 status = xpt_create_path(&path, xpt_periph,
5462 path_id, target_id, lun_id);
5463 if (status != CAM_REQ_CMP) {
5464 kprintf("xpt_scan_bus: xpt_create_path failed "
5465 "with status %#x, halting LUN scan\n",
5469 xpt_setup_ccb(&request_ccb->ccb_h, path,
5470 request_ccb->ccb_h.pinfo.priority);
5471 request_ccb->ccb_h.func_code = XPT_SCAN_LUN;
5472 request_ccb->ccb_h.cbfcnp = xpt_scan_bus;
5473 request_ccb->ccb_h.ppriv_ptr0 = scan_info;
5474 request_ccb->crcn.flags =
5475 scan_info->request_ccb->crcn.flags;
5477 xpt_action(request_ccb);
5487 PROBE_INQUIRY, /* this counts as DV0 for Basic Domain Validation */
5492 PROBE_TUR_FOR_NEGOTIATION,
5493 PROBE_INQUIRY_BASIC_DV1,
5494 PROBE_INQUIRY_BASIC_DV2,
5499 PROBE_INQUIRY_CKSUM = 0x01,
5500 PROBE_SERIAL_CKSUM = 0x02,
5501 PROBE_NO_ANNOUNCE = 0x04
5505 TAILQ_HEAD(, ccb_hdr) request_ccbs;
5506 probe_action action;
5507 union ccb saved_ccb;
5510 u_int8_t digest[16];
5514 xpt_scan_lun(struct cam_periph *periph, struct cam_path *path,
5515 cam_flags flags, union ccb *request_ccb)
5517 struct ccb_pathinq cpi;
5519 struct cam_path *new_path;
5520 struct cam_periph *old_periph;
5522 CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE,
5523 ("xpt_scan_lun\n"));
5525 xpt_setup_ccb(&cpi.ccb_h, path, /*priority*/1);
5526 cpi.ccb_h.func_code = XPT_PATH_INQ;
5527 xpt_action((union ccb *)&cpi);
5529 if (cpi.ccb_h.status != CAM_REQ_CMP) {
5530 if (request_ccb != NULL) {
5531 request_ccb->ccb_h.status = cpi.ccb_h.status;
5532 xpt_done(request_ccb);
5537 if ((cpi.hba_misc & PIM_NOINITIATOR) != 0) {
5539 * Can't scan the bus on an adapter that
5540 * cannot perform the initiator role.
5542 if (request_ccb != NULL) {
5543 request_ccb->ccb_h.status = CAM_REQ_CMP;
5544 xpt_done(request_ccb);
5549 if (request_ccb == NULL) {
5550 request_ccb = kmalloc(sizeof(union ccb), M_CAMXPT, M_INTWAIT);
5551 new_path = kmalloc(sizeof(*new_path), M_CAMXPT, M_INTWAIT);
5552 status = xpt_compile_path(new_path, xpt_periph,
5554 path->target->target_id,
5555 path->device->lun_id);
5557 if (status != CAM_REQ_CMP) {
5558 xpt_print(path, "xpt_scan_lun: can't compile path, "
5559 "can't continue\n");
5560 kfree(request_ccb, M_CAMXPT);
5561 kfree(new_path, M_CAMXPT);
5564 xpt_setup_ccb(&request_ccb->ccb_h, new_path, /*priority*/ 1);
5565 request_ccb->ccb_h.cbfcnp = xptscandone;
5566 request_ccb->ccb_h.func_code = XPT_SCAN_LUN;
5567 request_ccb->crcn.flags = flags;
5570 if ((old_periph = cam_periph_find(path, "probe")) != NULL) {
5573 softc = (probe_softc *)old_periph->softc;
5574 TAILQ_INSERT_TAIL(&softc->request_ccbs, &request_ccb->ccb_h,
5577 status = cam_periph_alloc(proberegister, NULL, probecleanup,
5578 probestart, "probe",
5580 request_ccb->ccb_h.path, NULL, 0,
5583 if (status != CAM_REQ_CMP) {
5584 xpt_print(path, "xpt_scan_lun: cam_alloc_periph "
5585 "returned an error, can't continue probe\n");
5586 request_ccb->ccb_h.status = status;
5587 xpt_done(request_ccb);
5593 xptscandone(struct cam_periph *periph, union ccb *done_ccb)
5595 xpt_release_path(done_ccb->ccb_h.path);
5596 kfree(done_ccb->ccb_h.path, M_CAMXPT);
5597 kfree(done_ccb, M_CAMXPT);
5601 proberegister(struct cam_periph *periph, void *arg)
5603 union ccb *request_ccb; /* CCB representing the probe request */
5607 request_ccb = (union ccb *)arg;
5608 if (periph == NULL) {
5609 kprintf("proberegister: periph was NULL!!\n");
5610 return(CAM_REQ_CMP_ERR);
5613 if (request_ccb == NULL) {
5614 kprintf("proberegister: no probe CCB, "
5615 "can't register device\n");
5616 return(CAM_REQ_CMP_ERR);
5619 softc = kmalloc(sizeof(*softc), M_CAMXPT, M_INTWAIT | M_ZERO);
5620 TAILQ_INIT(&softc->request_ccbs);
5621 TAILQ_INSERT_TAIL(&softc->request_ccbs, &request_ccb->ccb_h,
5624 periph->softc = softc;
5625 status = cam_periph_acquire(periph);
5626 if (status != CAM_REQ_CMP) {
5632 * Ensure we've waited at least a bus settle
5633 * delay before attempting to probe the device.
5634 * For HBAs that don't do bus resets, this won't make a difference.
5636 cam_periph_freeze_after_event(periph, &periph->path->bus->last_reset,
5638 probeschedule(periph);
5639 return(CAM_REQ_CMP);
5643 probeschedule(struct cam_periph *periph)
5645 struct ccb_pathinq cpi;
5649 softc = (probe_softc *)periph->softc;
5650 ccb = (union ccb *)TAILQ_FIRST(&softc->request_ccbs);
5652 xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1);
5653 cpi.ccb_h.func_code = XPT_PATH_INQ;
5654 xpt_action((union ccb *)&cpi);
5657 * If a device has gone away and another device, or the same one,
5658 * is back in the same place, it should have a unit attention
5659 * condition pending. It will not report the unit attention in
5660 * response to an inquiry, which may leave invalid transfer
5661 * negotiations in effect. The TUR will reveal the unit attention
5662 * condition. Only send the TUR for lun 0, since some devices
5663 * will get confused by commands other than inquiry to non-existent
5664 * luns. If you think a device has gone away start your scan from
5665 * lun 0. This will insure that any bogus transfer settings are
5668 * If we haven't seen the device before and the controller supports
5669 * some kind of transfer negotiation, negotiate with the first
5670 * sent command if no bus reset was performed at startup. This
5671 * ensures that the device is not confused by transfer negotiation
5672 * settings left over by loader or BIOS action.
5674 if (((ccb->ccb_h.path->device->flags & CAM_DEV_UNCONFIGURED) == 0)
5675 && (ccb->ccb_h.target_lun == 0)) {
5676 softc->action = PROBE_TUR;
5677 } else if ((cpi.hba_inquiry & (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE)) != 0
5678 && (cpi.hba_misc & PIM_NOBUSRESET) != 0) {
5679 proberequestdefaultnegotiation(periph);
5680 softc->action = PROBE_INQUIRY;
5682 softc->action = PROBE_INQUIRY;
5685 if (ccb->crcn.flags & CAM_EXPECT_INQ_CHANGE)
5686 softc->flags |= PROBE_NO_ANNOUNCE;
5688 softc->flags &= ~PROBE_NO_ANNOUNCE;
5690 xpt_schedule(periph, ccb->ccb_h.pinfo.priority);
5694 probestart(struct cam_periph *periph, union ccb *start_ccb)
5696 /* Probe the device that our peripheral driver points to */
5697 struct ccb_scsiio *csio;
5700 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("probestart\n"));
5702 softc = (probe_softc *)periph->softc;
5703 csio = &start_ccb->csio;
5705 switch (softc->action) {
5707 case PROBE_TUR_FOR_NEGOTIATION:
5710 scsi_test_unit_ready(csio,
5719 case PROBE_FULL_INQUIRY:
5720 case PROBE_INQUIRY_BASIC_DV1:
5721 case PROBE_INQUIRY_BASIC_DV2:
5724 struct scsi_inquiry_data *inq_buf;
5726 inq_buf = &periph->path->device->inq_data;
5729 * If the device is currently configured, we calculate an
5730 * MD5 checksum of the inquiry data, and if the serial number
5731 * length is greater than 0, add the serial number data
5732 * into the checksum as well. Once the inquiry and the
5733 * serial number check finish, we attempt to figure out
5734 * whether we still have the same device.
5736 if ((periph->path->device->flags & CAM_DEV_UNCONFIGURED) == 0) {
5738 MD5Init(&softc->context);
5739 MD5Update(&softc->context, (unsigned char *)inq_buf,
5740 sizeof(struct scsi_inquiry_data));
5741 softc->flags |= PROBE_INQUIRY_CKSUM;
5742 if (periph->path->device->serial_num_len > 0) {
5743 MD5Update(&softc->context,
5744 periph->path->device->serial_num,
5745 periph->path->device->serial_num_len);
5746 softc->flags |= PROBE_SERIAL_CKSUM;
5748 MD5Final(softc->digest, &softc->context);
5751 if (softc->action == PROBE_INQUIRY)
5752 inquiry_len = SHORT_INQUIRY_LENGTH;
5754 inquiry_len = SID_ADDITIONAL_LENGTH(inq_buf);
5757 * Some parallel SCSI devices fail to send an
5758 * ignore wide residue message when dealing with
5759 * odd length inquiry requests. Round up to be
5762 inquiry_len = roundup2(inquiry_len, 2);
5764 if (softc->action == PROBE_INQUIRY_BASIC_DV1
5765 || softc->action == PROBE_INQUIRY_BASIC_DV2) {
5766 inq_buf = kmalloc(inquiry_len, M_CAMXPT, M_INTWAIT);
5772 (u_int8_t *)inq_buf,
5777 /*timeout*/60 * 1000);
5780 case PROBE_MODE_SENSE:
5785 mode_buf_len = sizeof(struct scsi_mode_header_6)
5786 + sizeof(struct scsi_mode_blk_desc)
5787 + sizeof(struct scsi_control_page);
5788 mode_buf = kmalloc(mode_buf_len, M_CAMXPT, M_INTWAIT);
5789 scsi_mode_sense(csio,
5794 SMS_PAGE_CTRL_CURRENT,
5795 SMS_CONTROL_MODE_PAGE,
5802 case PROBE_SERIAL_NUM_0:
5804 struct scsi_vpd_supported_page_list *vpd_list = NULL;
5805 struct cam_ed *device;
5807 device = periph->path->device;
5808 if ((device->quirk->quirks & CAM_QUIRK_NOSERIAL) == 0) {
5809 vpd_list = kmalloc(sizeof(*vpd_list), M_CAMXPT,
5810 M_INTWAIT | M_ZERO);
5813 if (vpd_list != NULL) {
5818 (u_int8_t *)vpd_list,
5821 SVPD_SUPPORTED_PAGE_LIST,
5823 /*timeout*/60 * 1000);
5827 * We'll have to do without, let our probedone
5828 * routine finish up for us.
5830 start_ccb->csio.data_ptr = NULL;
5831 probedone(periph, start_ccb);
5834 case PROBE_SERIAL_NUM_1:
5836 struct scsi_vpd_unit_serial_number *serial_buf;
5837 struct cam_ed* device;
5840 device = periph->path->device;
5841 device->serial_num = NULL;
5842 device->serial_num_len = 0;
5844 serial_buf = (struct scsi_vpd_unit_serial_number *)
5845 kmalloc(sizeof(*serial_buf), M_CAMXPT,
5846 M_INTWAIT | M_ZERO);
5851 (u_int8_t *)serial_buf,
5852 sizeof(*serial_buf),
5854 SVPD_UNIT_SERIAL_NUMBER,
5856 /*timeout*/60 * 1000);
5860 xpt_action(start_ccb);
5864 proberequestdefaultnegotiation(struct cam_periph *periph)
5866 struct ccb_trans_settings cts;
5868 xpt_setup_ccb(&cts.ccb_h, periph->path, /*priority*/1);
5869 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
5870 cts.type = CTS_TYPE_USER_SETTINGS;
5871 xpt_action((union ccb *)&cts);
5872 if ((cts.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
5875 cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
5876 cts.type = CTS_TYPE_CURRENT_SETTINGS;
5877 xpt_action((union ccb *)&cts);
5881 * Backoff Negotiation Code- only pertinent for SPI devices.
5884 proberequestbackoff(struct cam_periph *periph, struct cam_ed *device)
5886 struct ccb_trans_settings cts;
5887 struct ccb_trans_settings_spi *spi;
5889 memset(&cts, 0, sizeof (cts));
5890 xpt_setup_ccb(&cts.ccb_h, periph->path, /*priority*/1);
5891 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
5892 cts.type = CTS_TYPE_CURRENT_SETTINGS;
5893 xpt_action((union ccb *)&cts);
5894 if ((cts.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
5896 xpt_print(periph->path,
5897 "failed to get current device settings\n");
5901 if (cts.transport != XPORT_SPI) {
5903 xpt_print(periph->path, "not SPI transport\n");
5907 spi = &cts.xport_specific.spi;
5910 * We cannot renegotiate sync rate if we don't have one.
5912 if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0) {
5914 xpt_print(periph->path, "no sync rate known\n");
5920 * We'll assert that we don't have to touch PPR options- the
5921 * SIM will see what we do with period and offset and adjust
5922 * the PPR options as appropriate.
5926 * A sync rate with unknown or zero offset is nonsensical.
5927 * A sync period of zero means Async.
5929 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0
5930 || spi->sync_offset == 0 || spi->sync_period == 0) {
5932 xpt_print(periph->path, "no sync rate available\n");
5937 if (device->flags & CAM_DEV_DV_HIT_BOTTOM) {
5938 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
5939 ("hit async: giving up on DV\n"));
5945 * Jump sync_period up by one, but stop at 5MHz and fall back to Async.
5946 * We don't try to remember 'last' settings to see if the SIM actually
5947 * gets into the speed we want to set. We check on the SIM telling
5948 * us that a requested speed is bad, but otherwise don't try and
5949 * check the speed due to the asynchronous and handshake nature
5952 spi->valid = CTS_SPI_VALID_SYNC_RATE | CTS_SPI_VALID_SYNC_OFFSET;
5955 if (spi->sync_period >= 0xf) {
5956 spi->sync_period = 0;
5957 spi->sync_offset = 0;
5958 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
5959 ("setting to async for DV\n"));
5961 * Once we hit async, we don't want to try
5962 * any more settings.
5964 device->flags |= CAM_DEV_DV_HIT_BOTTOM;
5965 } else if (bootverbose) {
5966 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
5967 ("DV: period 0x%x\n", spi->sync_period));
5968 kprintf("setting period to 0x%x\n", spi->sync_period);
5970 cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
5971 cts.type = CTS_TYPE_CURRENT_SETTINGS;
5972 xpt_action((union ccb *)&cts);
5973 if ((cts.ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
5976 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
5977 ("DV: failed to set period 0x%x\n", spi->sync_period));
5978 if (spi->sync_period == 0) {
5986 probedone(struct cam_periph *periph, union ccb *done_ccb)
5989 struct cam_path *path;
5992 CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("probedone\n"));
5994 softc = (probe_softc *)periph->softc;
5995 path = done_ccb->ccb_h.path;
5996 priority = done_ccb->ccb_h.pinfo.priority;
5998 switch (softc->action) {
6001 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
6003 if (cam_periph_error(done_ccb, 0,
6004 SF_NO_PRINT, NULL) == ERESTART)
6006 else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
6007 /* Don't wedge the queue */
6008 xpt_release_devq(done_ccb->ccb_h.path,
6012 softc->action = PROBE_INQUIRY;
6013 xpt_release_ccb(done_ccb);
6014 xpt_schedule(periph, priority);
6018 case PROBE_FULL_INQUIRY:
6020 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
6021 struct scsi_inquiry_data *inq_buf;
6022 u_int8_t periph_qual;
6024 path->device->flags |= CAM_DEV_INQUIRY_DATA_VALID;
6025 inq_buf = &path->device->inq_data;
6027 periph_qual = SID_QUAL(inq_buf);
6029 switch(periph_qual) {
6030 case SID_QUAL_LU_CONNECTED:
6035 * We conservatively request only
6036 * SHORT_INQUIRY_LEN bytes of inquiry
6037 * information during our first try
6038 * at sending an INQUIRY. If the device
6039 * has more information to give,
6040 * perform a second request specifying
6041 * the amount of information the device
6042 * is willing to give.
6044 len = inq_buf->additional_length
6045 + offsetof(struct scsi_inquiry_data,
6046 additional_length) + 1;
6047 if (softc->action == PROBE_INQUIRY
6048 && len > SHORT_INQUIRY_LENGTH) {
6049 softc->action = PROBE_FULL_INQUIRY;
6050 xpt_release_ccb(done_ccb);
6051 xpt_schedule(periph, priority);
6055 xpt_find_quirk(path->device);
6057 xpt_devise_transport(path);
6058 if (INQ_DATA_TQ_ENABLED(inq_buf))
6059 softc->action = PROBE_MODE_SENSE;
6061 softc->action = PROBE_SERIAL_NUM_0;
6063 path->device->flags &= ~CAM_DEV_UNCONFIGURED;
6064 xpt_reference_device(path->device);
6066 xpt_release_ccb(done_ccb);
6067 xpt_schedule(periph, priority);
6073 } else if (cam_periph_error(done_ccb, 0,
6074 done_ccb->ccb_h.target_lun > 0
6075 ? SF_RETRY_UA|SF_QUIET_IR
6077 &softc->saved_ccb) == ERESTART) {
6079 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
6080 /* Don't wedge the queue */
6081 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
6085 * If we get to this point, we got an error status back
6086 * from the inquiry and the error status doesn't require
6087 * automatically retrying the command. Therefore, the
6088 * inquiry failed. If we had inquiry information before
6089 * for this device, but this latest inquiry command failed,
6090 * the device has probably gone away. If this device isn't
6091 * already marked unconfigured, notify the peripheral
6092 * drivers that this device is no more.
6094 if ((path->device->flags & CAM_DEV_UNCONFIGURED) == 0) {
6095 /* Send the async notification. */
6096 xpt_async(AC_LOST_DEVICE, path, NULL);
6099 xpt_release_ccb(done_ccb);
6102 case PROBE_MODE_SENSE:
6104 struct ccb_scsiio *csio;
6105 struct scsi_mode_header_6 *mode_hdr;
6107 csio = &done_ccb->csio;
6108 mode_hdr = (struct scsi_mode_header_6 *)csio->data_ptr;
6109 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
6110 struct scsi_control_page *page;
6113 offset = ((u_int8_t *)&mode_hdr[1])
6114 + mode_hdr->blk_desc_len;
6115 page = (struct scsi_control_page *)offset;
6116 path->device->queue_flags = page->queue_flags;
6117 } else if (cam_periph_error(done_ccb, 0,
6118 SF_RETRY_UA|SF_NO_PRINT,
6119 &softc->saved_ccb) == ERESTART) {
6121 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
6122 /* Don't wedge the queue */
6123 xpt_release_devq(done_ccb->ccb_h.path,
6124 /*count*/1, /*run_queue*/TRUE);
6126 xpt_release_ccb(done_ccb);
6127 kfree(mode_hdr, M_CAMXPT);
6128 softc->action = PROBE_SERIAL_NUM_0;
6129 xpt_schedule(periph, priority);
6132 case PROBE_SERIAL_NUM_0:
6134 struct ccb_scsiio *csio;
6135 struct scsi_vpd_supported_page_list *page_list;
6136 int length, serialnum_supported, i;
6138 serialnum_supported = 0;
6139 csio = &done_ccb->csio;
6141 (struct scsi_vpd_supported_page_list *)csio->data_ptr;
6143 if (page_list == NULL) {
6145 * Don't process the command as it was never sent
6147 } else if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP
6148 && (page_list->length > 0)) {
6149 length = min(page_list->length,
6150 SVPD_SUPPORTED_PAGES_SIZE);
6151 for (i = 0; i < length; i++) {
6152 if (page_list->list[i] ==
6153 SVPD_UNIT_SERIAL_NUMBER) {
6154 serialnum_supported = 1;
6158 } else if (cam_periph_error(done_ccb, 0,
6159 SF_RETRY_UA|SF_NO_PRINT,
6160 &softc->saved_ccb) == ERESTART) {
6162 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
6163 /* Don't wedge the queue */
6164 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
6168 if (page_list != NULL)
6169 kfree(page_list, M_DEVBUF);
6171 if (serialnum_supported) {
6172 xpt_release_ccb(done_ccb);
6173 softc->action = PROBE_SERIAL_NUM_1;
6174 xpt_schedule(periph, priority);
6177 xpt_release_ccb(done_ccb);
6178 softc->action = PROBE_TUR_FOR_NEGOTIATION;
6179 xpt_schedule(periph, done_ccb->ccb_h.pinfo.priority);
6183 case PROBE_SERIAL_NUM_1:
6185 struct ccb_scsiio *csio;
6186 struct scsi_vpd_unit_serial_number *serial_buf;
6193 csio = &done_ccb->csio;
6194 priority = done_ccb->ccb_h.pinfo.priority;
6196 (struct scsi_vpd_unit_serial_number *)csio->data_ptr;
6198 /* Clean up from previous instance of this device */
6199 if (path->device->serial_num != NULL) {
6200 kfree(path->device->serial_num, M_CAMXPT);
6201 path->device->serial_num = NULL;
6202 path->device->serial_num_len = 0;
6205 if (serial_buf == NULL) {
6207 * Don't process the command as it was never sent
6209 } else if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP
6210 && (serial_buf->length > 0)) {
6213 path->device->serial_num =
6214 kmalloc((serial_buf->length + 1),
6215 M_CAMXPT, M_INTWAIT);
6216 bcopy(serial_buf->serial_num,
6217 path->device->serial_num,
6218 serial_buf->length);
6219 path->device->serial_num_len = serial_buf->length;
6220 path->device->serial_num[serial_buf->length] = '\0';
6221 } else if (cam_periph_error(done_ccb, 0,
6222 SF_RETRY_UA|SF_NO_PRINT,
6223 &softc->saved_ccb) == ERESTART) {
6225 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
6226 /* Don't wedge the queue */
6227 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
6232 * Let's see if we have seen this device before.
6234 if ((softc->flags & PROBE_INQUIRY_CKSUM) != 0) {
6236 u_int8_t digest[16];
6241 (unsigned char *)&path->device->inq_data,
6242 sizeof(struct scsi_inquiry_data));
6245 MD5Update(&context, serial_buf->serial_num,
6246 serial_buf->length);
6248 MD5Final(digest, &context);
6249 if (bcmp(softc->digest, digest, 16) == 0)
6253 * XXX Do we need to do a TUR in order to ensure
6254 * that the device really hasn't changed???
6257 && ((softc->flags & PROBE_NO_ANNOUNCE) == 0))
6258 xpt_async(AC_LOST_DEVICE, path, NULL);
6260 if (serial_buf != NULL)
6261 kfree(serial_buf, M_CAMXPT);
6265 * Now that we have all the necessary
6266 * information to safely perform transfer
6267 * negotiations... Controllers don't perform
6268 * any negotiation or tagged queuing until
6269 * after the first XPT_SET_TRAN_SETTINGS ccb is
6270 * received. So, on a new device, just retrieve
6271 * the user settings, and set them as the current
6272 * settings to set the device up.
6274 proberequestdefaultnegotiation(periph);
6275 xpt_release_ccb(done_ccb);
6278 * Perform a TUR to allow the controller to
6279 * perform any necessary transfer negotiation.
6281 softc->action = PROBE_TUR_FOR_NEGOTIATION;
6282 xpt_schedule(periph, priority);
6285 xpt_release_ccb(done_ccb);
6288 case PROBE_TUR_FOR_NEGOTIATION:
6290 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
6291 /* Don't wedge the queue */
6292 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
6296 xpt_reference_device(path->device);
6298 * Do Domain Validation for lun 0 on devices that claim
6299 * to support Synchronous Transfer modes.
6301 if (softc->action == PROBE_TUR_FOR_NEGOTIATION
6302 && done_ccb->ccb_h.target_lun == 0
6303 && (path->device->inq_data.flags & SID_Sync) != 0
6304 && (path->device->flags & CAM_DEV_IN_DV) == 0) {
6305 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
6306 ("Begin Domain Validation\n"));
6307 path->device->flags |= CAM_DEV_IN_DV;
6308 xpt_release_ccb(done_ccb);
6309 softc->action = PROBE_INQUIRY_BASIC_DV1;
6310 xpt_schedule(periph, priority);
6313 if (softc->action == PROBE_DV_EXIT) {
6314 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
6315 ("Leave Domain Validation\n"));
6317 path->device->flags &=
6318 ~(CAM_DEV_UNCONFIGURED|CAM_DEV_IN_DV|CAM_DEV_DV_HIT_BOTTOM);
6319 if ((softc->flags & PROBE_NO_ANNOUNCE) == 0) {
6320 /* Inform the XPT that a new device has been found */
6321 done_ccb->ccb_h.func_code = XPT_GDEV_TYPE;
6322 xpt_action(done_ccb);
6323 xpt_async(AC_FOUND_DEVICE, done_ccb->ccb_h.path,
6326 xpt_release_ccb(done_ccb);
6328 case PROBE_INQUIRY_BASIC_DV1:
6329 case PROBE_INQUIRY_BASIC_DV2:
6331 struct scsi_inquiry_data *nbuf;
6332 struct ccb_scsiio *csio;
6334 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
6335 /* Don't wedge the queue */
6336 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
6339 csio = &done_ccb->csio;
6340 nbuf = (struct scsi_inquiry_data *)csio->data_ptr;
6341 if (bcmp(nbuf, &path->device->inq_data, SHORT_INQUIRY_LENGTH)) {
6343 "inquiry data fails comparison at DV%d step\n",
6344 softc->action == PROBE_INQUIRY_BASIC_DV1 ? 1 : 2);
6345 if (proberequestbackoff(periph, path->device)) {
6346 path->device->flags &= ~CAM_DEV_IN_DV;
6347 softc->action = PROBE_TUR_FOR_NEGOTIATION;
6350 softc->action = PROBE_DV_EXIT;
6352 kfree(nbuf, M_CAMXPT);
6353 xpt_release_ccb(done_ccb);
6354 xpt_schedule(periph, priority);
6357 kfree(nbuf, M_CAMXPT);
6358 if (softc->action == PROBE_INQUIRY_BASIC_DV1) {
6359 softc->action = PROBE_INQUIRY_BASIC_DV2;
6360 xpt_release_ccb(done_ccb);
6361 xpt_schedule(periph, priority);
6364 if (softc->action == PROBE_DV_EXIT) {
6365 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
6366 ("Leave Domain Validation Successfully\n"));
6368 path->device->flags &=
6369 ~(CAM_DEV_UNCONFIGURED|CAM_DEV_IN_DV|CAM_DEV_DV_HIT_BOTTOM);
6370 if ((softc->flags & PROBE_NO_ANNOUNCE) == 0) {
6371 /* Inform the XPT that a new device has been found */
6372 done_ccb->ccb_h.func_code = XPT_GDEV_TYPE;
6373 xpt_action(done_ccb);
6374 xpt_async(AC_FOUND_DEVICE, done_ccb->ccb_h.path,
6377 xpt_release_ccb(done_ccb);
6381 done_ccb = (union ccb *)TAILQ_FIRST(&softc->request_ccbs);
6382 TAILQ_REMOVE(&softc->request_ccbs, &done_ccb->ccb_h, periph_links.tqe);
6383 done_ccb->ccb_h.status = CAM_REQ_CMP;
6385 if (TAILQ_FIRST(&softc->request_ccbs) == NULL) {
6386 cam_periph_invalidate(periph);
6387 cam_periph_release(periph);
6389 probeschedule(periph);
6394 probecleanup(struct cam_periph *periph)
6396 kfree(periph->softc, M_CAMXPT);
6400 xpt_find_quirk(struct cam_ed *device)
6404 match = cam_quirkmatch((caddr_t)&device->inq_data,
6405 (caddr_t)xpt_quirk_table,
6406 sizeof(xpt_quirk_table)/sizeof(*xpt_quirk_table),
6407 sizeof(*xpt_quirk_table), scsi_inquiry_match);
6410 panic("xpt_find_quirk: device didn't match wildcard entry!!");
6412 device->quirk = (struct xpt_quirk_entry *)match;
6416 sysctl_cam_search_luns(SYSCTL_HANDLER_ARGS)
6421 error = sysctl_handle_int(oidp, &bool, 0, req);
6422 if (error != 0 || req->newptr == NULL)
6424 if (bool == 0 || bool == 1) {
6433 xpt_devise_transport(struct cam_path *path)
6435 struct ccb_pathinq cpi;
6436 struct ccb_trans_settings cts;
6437 struct scsi_inquiry_data *inq_buf;
6439 /* Get transport information from the SIM */
6440 xpt_setup_ccb(&cpi.ccb_h, path, /*priority*/1);
6441 cpi.ccb_h.func_code = XPT_PATH_INQ;
6442 xpt_action((union ccb *)&cpi);
6445 if ((path->device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0)
6446 inq_buf = &path->device->inq_data;
6447 path->device->protocol = PROTO_SCSI;
6448 path->device->protocol_version =
6449 inq_buf != NULL ? SID_ANSI_REV(inq_buf) : cpi.protocol_version;
6450 path->device->transport = cpi.transport;
6451 path->device->transport_version = cpi.transport_version;
6454 * Any device not using SPI3 features should
6455 * be considered SPI2 or lower.
6457 if (inq_buf != NULL) {
6458 if (path->device->transport == XPORT_SPI
6459 && (inq_buf->spi3data & SID_SPI_MASK) == 0
6460 && path->device->transport_version > 2)
6461 path->device->transport_version = 2;
6463 struct cam_ed* otherdev;
6465 for (otherdev = TAILQ_FIRST(&path->target->ed_entries);
6467 otherdev = TAILQ_NEXT(otherdev, links)) {
6468 if (otherdev != path->device)
6472 if (otherdev != NULL) {
6474 * Initially assume the same versioning as
6475 * prior luns for this target.
6477 path->device->protocol_version =
6478 otherdev->protocol_version;
6479 path->device->transport_version =
6480 otherdev->transport_version;
6482 /* Until we know better, opt for safty */
6483 path->device->protocol_version = 2;
6484 if (path->device->transport == XPORT_SPI)
6485 path->device->transport_version = 2;
6487 path->device->transport_version = 0;
6493 * For a device compliant with SPC-2 we should be able
6494 * to determine the transport version supported by
6495 * scrutinizing the version descriptors in the
6499 /* Tell the controller what we think */
6500 xpt_setup_ccb(&cts.ccb_h, path, /*priority*/1);
6501 cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
6502 cts.type = CTS_TYPE_CURRENT_SETTINGS;
6503 cts.transport = path->device->transport;
6504 cts.transport_version = path->device->transport_version;
6505 cts.protocol = path->device->protocol;
6506 cts.protocol_version = path->device->protocol_version;
6507 cts.proto_specific.valid = 0;
6508 cts.xport_specific.valid = 0;
6509 xpt_action((union ccb *)&cts);
6513 xpt_set_transfer_settings(struct ccb_trans_settings *cts, struct cam_ed *device,
6516 struct ccb_pathinq cpi;
6517 struct ccb_trans_settings cur_cts;
6518 struct ccb_trans_settings_scsi *scsi;
6519 struct ccb_trans_settings_scsi *cur_scsi;
6520 struct cam_sim *sim;
6521 struct scsi_inquiry_data *inq_data;
6523 if (device == NULL) {
6524 cts->ccb_h.status = CAM_PATH_INVALID;
6525 xpt_done((union ccb *)cts);
6529 if (cts->protocol == PROTO_UNKNOWN
6530 || cts->protocol == PROTO_UNSPECIFIED) {
6531 cts->protocol = device->protocol;
6532 cts->protocol_version = device->protocol_version;
6535 if (cts->protocol_version == PROTO_VERSION_UNKNOWN
6536 || cts->protocol_version == PROTO_VERSION_UNSPECIFIED)
6537 cts->protocol_version = device->protocol_version;
6539 if (cts->protocol != device->protocol) {
6540 xpt_print(cts->ccb_h.path, "Uninitialized Protocol %x:%x?\n",
6541 cts->protocol, device->protocol);
6542 cts->protocol = device->protocol;
6545 if (cts->protocol_version > device->protocol_version) {
6547 xpt_print(cts->ccb_h.path, "Down reving Protocol "
6548 "Version from %d to %d?\n", cts->protocol_version,
6549 device->protocol_version);
6551 cts->protocol_version = device->protocol_version;
6554 if (cts->transport == XPORT_UNKNOWN
6555 || cts->transport == XPORT_UNSPECIFIED) {
6556 cts->transport = device->transport;
6557 cts->transport_version = device->transport_version;
6560 if (cts->transport_version == XPORT_VERSION_UNKNOWN
6561 || cts->transport_version == XPORT_VERSION_UNSPECIFIED)
6562 cts->transport_version = device->transport_version;
6564 if (cts->transport != device->transport) {
6565 xpt_print(cts->ccb_h.path, "Uninitialized Transport %x:%x?\n",
6566 cts->transport, device->transport);
6567 cts->transport = device->transport;
6570 if (cts->transport_version > device->transport_version) {
6572 xpt_print(cts->ccb_h.path, "Down reving Transport "
6573 "Version from %d to %d?\n", cts->transport_version,
6574 device->transport_version);
6576 cts->transport_version = device->transport_version;
6579 sim = cts->ccb_h.path->bus->sim;
6582 * Nothing more of interest to do unless
6583 * this is a device connected via the
6586 if (cts->protocol != PROTO_SCSI) {
6587 if (async_update == FALSE)
6588 (*(sim->sim_action))(sim, (union ccb *)cts);
6592 inq_data = &device->inq_data;
6593 scsi = &cts->proto_specific.scsi;
6594 xpt_setup_ccb(&cpi.ccb_h, cts->ccb_h.path, /*priority*/1);
6595 cpi.ccb_h.func_code = XPT_PATH_INQ;
6596 xpt_action((union ccb *)&cpi);
6598 /* SCSI specific sanity checking */
6599 if ((cpi.hba_inquiry & PI_TAG_ABLE) == 0
6600 || (INQ_DATA_TQ_ENABLED(inq_data)) == 0
6601 || (device->queue_flags & SCP_QUEUE_DQUE) != 0
6602 || (device->quirk->mintags == 0)) {
6604 * Can't tag on hardware that doesn't support tags,
6605 * doesn't have it enabled, or has broken tag support.
6607 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
6610 if (async_update == FALSE) {
6612 * Perform sanity checking against what the
6613 * controller and device can do.
6615 xpt_setup_ccb(&cur_cts.ccb_h, cts->ccb_h.path, /*priority*/1);
6616 cur_cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
6617 cur_cts.type = cts->type;
6618 xpt_action((union ccb *)&cur_cts);
6619 if ((cur_cts.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
6622 cur_scsi = &cur_cts.proto_specific.scsi;
6623 if ((scsi->valid & CTS_SCSI_VALID_TQ) == 0) {
6624 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
6625 scsi->flags |= cur_scsi->flags & CTS_SCSI_FLAGS_TAG_ENB;
6627 if ((cur_scsi->valid & CTS_SCSI_VALID_TQ) == 0)
6628 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
6631 /* SPI specific sanity checking */
6632 if (cts->transport == XPORT_SPI && async_update == FALSE) {
6634 struct ccb_trans_settings_spi *spi;
6635 struct ccb_trans_settings_spi *cur_spi;
6637 spi = &cts->xport_specific.spi;
6639 cur_spi = &cur_cts.xport_specific.spi;
6641 /* Fill in any gaps in what the user gave us */
6642 if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0)
6643 spi->sync_period = cur_spi->sync_period;
6644 if ((cur_spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0)
6645 spi->sync_period = 0;
6646 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0)
6647 spi->sync_offset = cur_spi->sync_offset;
6648 if ((cur_spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0)
6649 spi->sync_offset = 0;
6650 if ((spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0)
6651 spi->ppr_options = cur_spi->ppr_options;
6652 if ((cur_spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0)
6653 spi->ppr_options = 0;
6654 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) == 0)
6655 spi->bus_width = cur_spi->bus_width;
6656 if ((cur_spi->valid & CTS_SPI_VALID_BUS_WIDTH) == 0)
6658 if ((spi->valid & CTS_SPI_VALID_DISC) == 0) {
6659 spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
6660 spi->flags |= cur_spi->flags & CTS_SPI_FLAGS_DISC_ENB;
6662 if ((cur_spi->valid & CTS_SPI_VALID_DISC) == 0)
6663 spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
6664 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0
6665 && (inq_data->flags & SID_Sync) == 0
6666 && cts->type == CTS_TYPE_CURRENT_SETTINGS)
6667 || ((cpi.hba_inquiry & PI_SDTR_ABLE) == 0)
6668 || (spi->sync_offset == 0)
6669 || (spi->sync_period == 0)) {
6671 spi->sync_period = 0;
6672 spi->sync_offset = 0;
6675 switch (spi->bus_width) {
6676 case MSG_EXT_WDTR_BUS_32_BIT:
6677 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0
6678 || (inq_data->flags & SID_WBus32) != 0
6679 || cts->type == CTS_TYPE_USER_SETTINGS)
6680 && (cpi.hba_inquiry & PI_WIDE_32) != 0)
6682 /* Fall Through to 16-bit */
6683 case MSG_EXT_WDTR_BUS_16_BIT:
6684 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0
6685 || (inq_data->flags & SID_WBus16) != 0
6686 || cts->type == CTS_TYPE_USER_SETTINGS)
6687 && (cpi.hba_inquiry & PI_WIDE_16) != 0) {
6688 spi->bus_width = MSG_EXT_WDTR_BUS_16_BIT;
6691 /* Fall Through to 8-bit */
6692 default: /* New bus width?? */
6693 case MSG_EXT_WDTR_BUS_8_BIT:
6694 /* All targets can do this */
6695 spi->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
6699 spi3caps = cpi.xport_specific.spi.ppr_options;
6700 if ((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0
6701 && cts->type == CTS_TYPE_CURRENT_SETTINGS)
6702 spi3caps &= inq_data->spi3data;
6704 if ((spi3caps & SID_SPI_CLOCK_DT) == 0)
6705 spi->ppr_options &= ~MSG_EXT_PPR_DT_REQ;
6707 if ((spi3caps & SID_SPI_IUS) == 0)
6708 spi->ppr_options &= ~MSG_EXT_PPR_IU_REQ;
6710 if ((spi3caps & SID_SPI_QAS) == 0)
6711 spi->ppr_options &= ~MSG_EXT_PPR_QAS_REQ;
6713 /* No SPI Transfer settings are allowed unless we are wide */
6714 if (spi->bus_width == 0)
6715 spi->ppr_options = 0;
6717 if ((spi->flags & CTS_SPI_FLAGS_DISC_ENB) == 0) {
6719 * Can't tag queue without disconnection.
6721 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
6722 scsi->valid |= CTS_SCSI_VALID_TQ;
6726 * If we are currently performing tagged transactions to
6727 * this device and want to change its negotiation parameters,
6728 * go non-tagged for a bit to give the controller a chance to
6729 * negotiate unhampered by tag messages.
6731 if (cts->type == CTS_TYPE_CURRENT_SETTINGS
6732 && (device->inq_flags & SID_CmdQue) != 0
6733 && (scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0
6734 && (spi->flags & (CTS_SPI_VALID_SYNC_RATE|
6735 CTS_SPI_VALID_SYNC_OFFSET|
6736 CTS_SPI_VALID_BUS_WIDTH)) != 0)
6737 xpt_toggle_tags(cts->ccb_h.path);
6740 if (cts->type == CTS_TYPE_CURRENT_SETTINGS
6741 && (scsi->valid & CTS_SCSI_VALID_TQ) != 0) {
6745 * If we are transitioning from tags to no-tags or
6746 * vice-versa, we need to carefully freeze and restart
6747 * the queue so that we don't overlap tagged and non-tagged
6748 * commands. We also temporarily stop tags if there is
6749 * a change in transfer negotiation settings to allow
6750 * "tag-less" negotiation.
6752 if ((device->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
6753 || (device->inq_flags & SID_CmdQue) != 0)
6754 device_tagenb = TRUE;
6756 device_tagenb = FALSE;
6758 if (((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0
6759 && device_tagenb == FALSE)
6760 || ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) == 0
6761 && device_tagenb == TRUE)) {
6763 if ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0) {
6765 * Delay change to use tags until after a
6766 * few commands have gone to this device so
6767 * the controller has time to perform transfer
6768 * negotiations without tagged messages getting
6771 device->tag_delay_count = CAM_TAG_DELAY_COUNT;
6772 device->flags |= CAM_DEV_TAG_AFTER_COUNT;
6774 struct ccb_relsim crs;
6776 xpt_freeze_devq(cts->ccb_h.path, /*count*/1);
6777 device->inq_flags &= ~SID_CmdQue;
6778 xpt_dev_ccbq_resize(cts->ccb_h.path,
6779 sim->max_dev_openings);
6780 device->flags &= ~CAM_DEV_TAG_AFTER_COUNT;
6781 device->tag_delay_count = 0;
6783 xpt_setup_ccb(&crs.ccb_h, cts->ccb_h.path,
6785 crs.ccb_h.func_code = XPT_REL_SIMQ;
6786 crs.release_flags = RELSIM_RELEASE_AFTER_QEMPTY;
6788 = crs.release_timeout
6791 xpt_action((union ccb *)&crs);
6795 if (async_update == FALSE)
6796 (*(sim->sim_action))(sim, (union ccb *)cts);
6800 xpt_toggle_tags(struct cam_path *path)
6805 * Give controllers a chance to renegotiate
6806 * before starting tag operations. We
6807 * "toggle" tagged queuing off then on
6808 * which causes the tag enable command delay
6809 * counter to come into effect.
6812 if ((dev->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
6813 || ((dev->inq_flags & SID_CmdQue) != 0
6814 && (dev->inq_flags & (SID_Sync|SID_WBus16|SID_WBus32)) != 0)) {
6815 struct ccb_trans_settings cts;
6817 xpt_setup_ccb(&cts.ccb_h, path, 1);
6818 cts.protocol = PROTO_SCSI;
6819 cts.protocol_version = PROTO_VERSION_UNSPECIFIED;
6820 cts.transport = XPORT_UNSPECIFIED;
6821 cts.transport_version = XPORT_VERSION_UNSPECIFIED;
6822 cts.proto_specific.scsi.flags = 0;
6823 cts.proto_specific.scsi.valid = CTS_SCSI_VALID_TQ;
6824 xpt_set_transfer_settings(&cts, path->device,
6825 /*async_update*/TRUE);
6826 cts.proto_specific.scsi.flags = CTS_SCSI_FLAGS_TAG_ENB;
6827 xpt_set_transfer_settings(&cts, path->device,
6828 /*async_update*/TRUE);
6833 xpt_start_tags(struct cam_path *path)
6835 struct ccb_relsim crs;
6836 struct cam_ed *device;
6837 struct cam_sim *sim;
6840 device = path->device;
6841 sim = path->bus->sim;
6842 device->flags &= ~CAM_DEV_TAG_AFTER_COUNT;
6843 xpt_freeze_devq(path, /*count*/1);
6844 device->inq_flags |= SID_CmdQue;
6845 if (device->tag_saved_openings != 0)
6846 newopenings = device->tag_saved_openings;
6848 newopenings = min(device->quirk->maxtags,
6849 sim->max_tagged_dev_openings);
6850 xpt_dev_ccbq_resize(path, newopenings);
6851 xpt_setup_ccb(&crs.ccb_h, path, /*priority*/1);
6852 crs.ccb_h.func_code = XPT_REL_SIMQ;
6853 crs.release_flags = RELSIM_RELEASE_AFTER_QEMPTY;
6855 = crs.release_timeout
6858 xpt_action((union ccb *)&crs);
6861 static int busses_to_config;
6862 static int busses_to_reset;
6865 xptconfigbuscountfunc(struct cam_eb *bus, void *arg)
6868 sim_lock_assert_owned(bus->sim->lock);
6870 if (bus->path_id != CAM_XPT_PATH_ID) {
6871 struct cam_path path;
6872 struct ccb_pathinq cpi;
6876 xpt_compile_path(&path, NULL, bus->path_id,
6877 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
6878 xpt_setup_ccb(&cpi.ccb_h, &path, /*priority*/1);
6879 cpi.ccb_h.func_code = XPT_PATH_INQ;
6880 xpt_action((union ccb *)&cpi);
6881 can_negotiate = cpi.hba_inquiry;
6882 can_negotiate &= (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE);
6883 if ((cpi.hba_misc & PIM_NOBUSRESET) == 0
6886 xpt_release_path(&path);
6893 xptconfigfunc(struct cam_eb *bus, void *arg)
6895 struct cam_path *path;
6896 union ccb *work_ccb;
6898 sim_lock_assert_owned(bus->sim->lock);
6900 if (bus->path_id != CAM_XPT_PATH_ID) {
6904 work_ccb = xpt_alloc_ccb();
6905 if ((status = xpt_create_path(&path, xpt_periph, bus->path_id,
6906 CAM_TARGET_WILDCARD,
6907 CAM_LUN_WILDCARD)) !=CAM_REQ_CMP){
6908 kprintf("xptconfigfunc: xpt_create_path failed with "
6909 "status %#x for bus %d\n", status, bus->path_id);
6910 kprintf("xptconfigfunc: halting bus configuration\n");
6911 xpt_free_ccb(work_ccb);
6913 xpt_finishconfig(xpt_periph, NULL);
6916 xpt_setup_ccb(&work_ccb->ccb_h, path, /*priority*/1);
6917 work_ccb->ccb_h.func_code = XPT_PATH_INQ;
6918 xpt_action(work_ccb);
6919 if (work_ccb->ccb_h.status != CAM_REQ_CMP) {
6920 kprintf("xptconfigfunc: CPI failed on bus %d "
6921 "with status %d\n", bus->path_id,
6922 work_ccb->ccb_h.status);
6923 xpt_finishconfig(xpt_periph, work_ccb);
6927 can_negotiate = work_ccb->cpi.hba_inquiry;
6928 can_negotiate &= (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE);
6929 if ((work_ccb->cpi.hba_misc & PIM_NOBUSRESET) == 0
6930 && (can_negotiate != 0)) {
6931 xpt_setup_ccb(&work_ccb->ccb_h, path, /*priority*/1);
6932 work_ccb->ccb_h.func_code = XPT_RESET_BUS;
6933 work_ccb->ccb_h.cbfcnp = NULL;
6934 CAM_DEBUG(path, CAM_DEBUG_SUBTRACE,
6935 ("Resetting Bus\n"));
6936 xpt_action(work_ccb);
6937 xpt_finishconfig(xpt_periph, work_ccb);
6939 /* Act as though we performed a successful BUS RESET */
6940 work_ccb->ccb_h.func_code = XPT_RESET_BUS;
6941 xpt_finishconfig(xpt_periph, work_ccb);
6949 xpt_config(void *arg)
6952 * Now that interrupts are enabled, go find our devices
6956 /* Setup debugging flags and path */
6957 #ifdef CAM_DEBUG_FLAGS
6958 cam_dflags = CAM_DEBUG_FLAGS;
6959 #else /* !CAM_DEBUG_FLAGS */
6960 cam_dflags = CAM_DEBUG_NONE;
6961 #endif /* CAM_DEBUG_FLAGS */
6962 #ifdef CAM_DEBUG_BUS
6963 if (cam_dflags != CAM_DEBUG_NONE) {
6965 * Locking is specifically omitted here. No SIMs have
6966 * registered yet, so xpt_create_path will only be searching
6967 * empty lists of targets and devices.
6969 if (xpt_create_path(&cam_dpath, xpt_periph,
6970 CAM_DEBUG_BUS, CAM_DEBUG_TARGET,
6971 CAM_DEBUG_LUN) != CAM_REQ_CMP) {
6972 kprintf("xpt_config: xpt_create_path() failed for debug"
6973 " target %d:%d:%d, debugging disabled\n",
6974 CAM_DEBUG_BUS, CAM_DEBUG_TARGET, CAM_DEBUG_LUN);
6975 cam_dflags = CAM_DEBUG_NONE;
6979 #else /* !CAM_DEBUG_BUS */
6981 #endif /* CAM_DEBUG_BUS */
6982 #endif /* CAMDEBUG */
6985 * Scan all installed busses.
6987 xpt_for_all_busses(xptconfigbuscountfunc, NULL);
6989 if (busses_to_config == 0) {
6990 /* Call manually because we don't have any busses */
6991 xpt_finishconfig(xpt_periph, NULL);
6993 if (busses_to_reset > 0 && scsi_delay >= 2000) {
6994 kprintf("Waiting %d seconds for SCSI "
6995 "devices to settle\n", scsi_delay/1000);
6997 xpt_for_all_busses(xptconfigfunc, NULL);
7002 * If the given device only has one peripheral attached to it, and if that
7003 * peripheral is the passthrough driver, announce it. This insures that the
7004 * user sees some sort of announcement for every peripheral in their system.
7007 xptpassannouncefunc(struct cam_ed *device, void *arg)
7009 struct cam_periph *periph;
7012 for (periph = SLIST_FIRST(&device->periphs), i = 0; periph != NULL;
7013 periph = SLIST_NEXT(periph, periph_links), i++);
7015 periph = SLIST_FIRST(&device->periphs);
7017 && (strncmp(periph->periph_name, "pass", 4) == 0))
7018 xpt_announce_periph(periph, NULL);
7024 xpt_finishconfig_task(void *context, int pending)
7026 struct periph_driver **p_drv;
7029 if (busses_to_config == 0) {
7030 /* Register all the peripheral drivers */
7031 /* XXX This will have to change when we have loadable modules */
7032 p_drv = periph_drivers;
7033 for (i = 0; p_drv[i] != NULL; i++) {
7034 (*p_drv[i]->init)();
7038 * Check for devices with no "standard" peripheral driver
7039 * attached. For any devices like that, announce the
7040 * passthrough driver so the user will see something.
7042 xpt_for_all_devices(xptpassannouncefunc, NULL);
7044 /* Release our hook so that the boot can continue. */
7045 config_intrhook_disestablish(xsoftc.xpt_config_hook);
7046 kfree(xsoftc.xpt_config_hook, M_CAMXPT);
7047 xsoftc.xpt_config_hook = NULL;
7050 kfree(context, M_CAMXPT);
7054 xpt_finishconfig(struct cam_periph *periph, union ccb *done_ccb)
7056 struct xpt_task *task;
7058 if (done_ccb != NULL) {
7059 CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE,
7060 ("xpt_finishconfig\n"));
7061 switch(done_ccb->ccb_h.func_code) {
7063 if (done_ccb->ccb_h.status == CAM_REQ_CMP) {
7064 done_ccb->ccb_h.func_code = XPT_SCAN_BUS;
7065 done_ccb->ccb_h.cbfcnp = xpt_finishconfig;
7066 done_ccb->crcn.flags = 0;
7067 xpt_action(done_ccb);
7073 xpt_free_path(done_ccb->ccb_h.path);
7079 if (busses_to_config == 0) {
7080 task = kmalloc(sizeof(struct xpt_task), M_CAMXPT, M_INTWAIT);
7081 TASK_INIT(&task->task, 0, xpt_finishconfig_task, task);
7082 taskqueue_enqueue(taskqueue_thread[mycpuid], &task->task);
7085 if (done_ccb != NULL)
7086 xpt_free_ccb(done_ccb);
7090 xpt_register_async(int event, ac_callback_t *cbfunc, void *cbarg,
7091 struct cam_path *path)
7093 struct ccb_setasync csa;
7098 lockmgr(&xsoftc.xpt_lock, LK_EXCLUSIVE);
7099 status = xpt_create_path(&path, /*periph*/NULL, CAM_XPT_PATH_ID,
7100 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
7101 if (status != CAM_REQ_CMP) {
7102 lockmgr(&xsoftc.xpt_lock, LK_RELEASE);
7108 xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
7109 csa.ccb_h.func_code = XPT_SASYNC_CB;
7110 csa.event_enable = event;
7111 csa.callback = cbfunc;
7112 csa.callback_arg = cbarg;
7113 xpt_action((union ccb *)&csa);
7114 status = csa.ccb_h.status;
7116 xpt_free_path(path);
7117 lockmgr(&xsoftc.xpt_lock, LK_RELEASE);
7123 xptaction(struct cam_sim *sim, union ccb *work_ccb)
7125 CAM_DEBUG(work_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("xptaction\n"));
7127 switch (work_ccb->ccb_h.func_code) {
7128 /* Common cases first */
7129 case XPT_PATH_INQ: /* Path routing inquiry */
7131 struct ccb_pathinq *cpi;
7133 cpi = &work_ccb->cpi;
7134 cpi->version_num = 1; /* XXX??? */
7135 cpi->hba_inquiry = 0;
7136 cpi->target_sprt = 0;
7138 cpi->hba_eng_cnt = 0;
7139 cpi->max_target = 0;
7141 cpi->initiator_id = 0;
7142 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
7143 strncpy(cpi->hba_vid, "", HBA_IDLEN);
7144 strncpy(cpi->dev_name, sim->sim_name, DEV_IDLEN);
7145 cpi->unit_number = sim->unit_number;
7146 cpi->bus_id = sim->bus_id;
7147 cpi->base_transfer_speed = 0;
7148 cpi->protocol = PROTO_UNSPECIFIED;
7149 cpi->protocol_version = PROTO_VERSION_UNSPECIFIED;
7150 cpi->transport = XPORT_UNSPECIFIED;
7151 cpi->transport_version = XPORT_VERSION_UNSPECIFIED;
7152 cpi->ccb_h.status = CAM_REQ_CMP;
7157 work_ccb->ccb_h.status = CAM_REQ_INVALID;
7164 * The xpt as a "controller" has no interrupt sources, so polling
7168 xptpoll(struct cam_sim *sim)
7173 xpt_lock_buses(void)
7175 lockmgr(&xsoftc.xpt_topo_lock, LK_EXCLUSIVE);
7179 xpt_unlock_buses(void)
7181 lockmgr(&xsoftc.xpt_topo_lock, LK_RELEASE);
7186 * Should only be called by the machine interrupt dispatch routines,
7187 * so put these prototypes here instead of in the header.
7191 swi_cambio(void *arg, void *frame)
7200 struct cam_sim *sim;
7202 spin_lock_wr(&cam_simq_spin);
7204 TAILQ_CONCAT(&queue, &cam_simq, links);
7205 spin_unlock_wr(&cam_simq_spin);
7207 while ((sim = TAILQ_FIRST(&queue)) != NULL) {
7208 TAILQ_REMOVE(&queue, sim, links);
7210 sim->flags &= ~CAM_SIM_ON_DONEQ;
7211 camisr_runqueue(sim);
7212 CAM_SIM_UNLOCK(sim);
7217 camisr_runqueue(struct cam_sim *sim)
7219 struct ccb_hdr *ccb_h;
7222 spin_lock_wr(&sim->sim_spin);
7223 while ((ccb_h = TAILQ_FIRST(&sim->sim_doneq)) != NULL) {
7224 TAILQ_REMOVE(&sim->sim_doneq, ccb_h, sim_links.tqe);
7225 spin_unlock_wr(&sim->sim_spin);
7226 ccb_h->pinfo.index = CAM_UNQUEUED_INDEX;
7228 CAM_DEBUG(ccb_h->path, CAM_DEBUG_TRACE,
7233 if (ccb_h->flags & CAM_HIGH_POWER) {
7234 struct highpowerlist *hphead;
7235 struct cam_ed *device;
7236 union ccb *send_ccb;
7238 lockmgr(&xsoftc.xpt_lock, LK_EXCLUSIVE);
7239 hphead = &xsoftc.highpowerq;
7241 send_ccb = (union ccb *)STAILQ_FIRST(hphead);
7244 * Increment the count since this command is done.
7246 xsoftc.num_highpower++;
7249 * Any high powered commands queued up?
7251 if (send_ccb != NULL) {
7252 device = send_ccb->ccb_h.path->device;
7254 STAILQ_REMOVE_HEAD(hphead, xpt_links.stqe);
7255 lockmgr(&xsoftc.xpt_lock, LK_RELEASE);
7257 xpt_release_devq(send_ccb->ccb_h.path,
7258 /*count*/1, /*runqueue*/TRUE);
7260 lockmgr(&xsoftc.xpt_lock, LK_RELEASE);
7263 if ((ccb_h->func_code & XPT_FC_USER_CCB) == 0) {
7266 dev = ccb_h->path->device;
7268 cam_ccbq_ccb_done(&dev->ccbq, (union ccb *)ccb_h);
7271 * devq may be NULL if this is cam_dead_sim
7273 if (ccb_h->path->bus->sim->devq) {
7274 ccb_h->path->bus->sim->devq->send_active--;
7275 ccb_h->path->bus->sim->devq->send_openings++;
7278 if (((dev->flags & CAM_DEV_REL_ON_COMPLETE) != 0
7279 && (ccb_h->status&CAM_STATUS_MASK) != CAM_REQUEUE_REQ)
7280 || ((dev->flags & CAM_DEV_REL_ON_QUEUE_EMPTY) != 0
7281 && (dev->ccbq.dev_active == 0))) {
7283 xpt_release_devq(ccb_h->path, /*count*/1,
7287 if ((dev->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
7288 && (--dev->tag_delay_count == 0))
7289 xpt_start_tags(ccb_h->path);
7291 if ((dev->ccbq.queue.entries > 0)
7292 && (dev->qfrozen_cnt == 0)
7293 && (device_is_send_queued(dev) == 0)) {
7294 runq = xpt_schedule_dev_sendq(ccb_h->path->bus,
7299 if (ccb_h->status & CAM_RELEASE_SIMQ) {
7300 xpt_release_simq(ccb_h->path->bus->sim,
7302 ccb_h->status &= ~CAM_RELEASE_SIMQ;
7306 if ((ccb_h->flags & CAM_DEV_QFRZDIS)
7307 && (ccb_h->status & CAM_DEV_QFRZN)) {
7308 xpt_release_devq(ccb_h->path, /*count*/1,
7310 ccb_h->status &= ~CAM_DEV_QFRZN;
7312 xpt_run_dev_sendq(ccb_h->path->bus);
7315 /* Call the peripheral driver's callback */
7316 (*ccb_h->cbfcnp)(ccb_h->path->periph, (union ccb *)ccb_h);
7317 spin_lock_wr(&sim->sim_spin);
7319 spin_unlock_wr(&sim->sim_spin);
7323 * The dead_sim isn't completely hooked into CAM, we have to make sure
7324 * the doneq is cleared after calling xpt_done() so cam_periph_ccbwait()
7328 dead_sim_action(struct cam_sim *sim, union ccb *ccb)
7331 ccb->ccb_h.status = CAM_DEV_NOT_THERE;
7333 camisr_runqueue(sim);
7337 dead_sim_poll(struct cam_sim *sim)