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
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
33 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/types.h>
37 #include <sys/malloc.h>
38 #include <sys/kernel.h>
41 #include <sys/fcntl.h>
42 #include <sys/interrupt.h>
44 #include <sys/taskqueue.h>
47 #include <sys/mutex.h>
48 #include <sys/sysctl.h>
49 #include <sys/kthread.h>
52 #include <cam/cam_ccb.h>
53 #include <cam/cam_periph.h>
54 #include <cam/cam_queue.h>
55 #include <cam/cam_sim.h>
56 #include <cam/cam_xpt.h>
57 #include <cam/cam_xpt_sim.h>
58 #include <cam/cam_xpt_periph.h>
59 #include <cam/cam_xpt_internal.h>
60 #include <cam/cam_debug.h>
61 #include <cam/cam_compat.h>
63 #include <cam/scsi/scsi_all.h>
64 #include <cam/scsi/scsi_message.h>
65 #include <cam/scsi/scsi_pass.h>
67 #include <machine/md_var.h> /* geometry translation */
68 #include <machine/stdarg.h> /* for xpt_print below */
73 * This is the maximum number of high powered commands (e.g. start unit)
74 * that can be outstanding at a particular time.
76 #ifndef CAM_MAX_HIGHPOWER
77 #define CAM_MAX_HIGHPOWER 4
80 /* Datastructures internal to the xpt layer */
81 MALLOC_DEFINE(M_CAMXPT, "CAM XPT", "CAM XPT buffers");
82 MALLOC_DEFINE(M_CAMDEV, "CAM DEV", "CAM devices");
83 MALLOC_DEFINE(M_CAMCCB, "CAM CCB", "CAM CCBs");
84 MALLOC_DEFINE(M_CAMPATH, "CAM path", "CAM paths");
86 /* Object for defering XPT actions to a taskqueue */
100 /* number of high powered commands that can go through right now */
101 STAILQ_HEAD(highpowerlist, cam_ed) highpowerq;
104 /* queue for handling async rescan requests. */
105 TAILQ_HEAD(, ccb_hdr) ccb_scanq;
107 int buses_config_done;
109 /* Registered busses */
110 TAILQ_HEAD(,cam_eb) xpt_busses;
111 u_int bus_generation;
113 struct intr_config_hook *xpt_config_hook;
116 struct callout boot_callout;
118 struct mtx xpt_topo_lock;
124 DM_RET_FLAG_MASK = 0x0f,
127 DM_RET_DESCEND = 0x20,
129 DM_RET_ACTION_MASK = 0xf0
137 } xpt_traverse_depth;
139 struct xpt_traverse_config {
140 xpt_traverse_depth depth;
145 typedef int xpt_busfunc_t (struct cam_eb *bus, void *arg);
146 typedef int xpt_targetfunc_t (struct cam_et *target, void *arg);
147 typedef int xpt_devicefunc_t (struct cam_ed *device, void *arg);
148 typedef int xpt_periphfunc_t (struct cam_periph *periph, void *arg);
149 typedef int xpt_pdrvfunc_t (struct periph_driver **pdrv, void *arg);
151 /* Transport layer configuration information */
152 static struct xpt_softc xsoftc;
154 TUNABLE_INT("kern.cam.boot_delay", &xsoftc.boot_delay);
155 SYSCTL_INT(_kern_cam, OID_AUTO, boot_delay, CTLFLAG_RDTUN,
156 &xsoftc.boot_delay, 0, "Bus registration wait time");
158 /* Queues for our software interrupt handler */
159 typedef TAILQ_HEAD(cam_isrq, ccb_hdr) cam_isrq_t;
160 typedef TAILQ_HEAD(cam_simq, cam_sim) cam_simq_t;
161 static cam_simq_t cam_simq;
162 static struct mtx cam_simq_lock;
164 /* Pointers to software interrupt handlers */
165 static void *cambio_ih;
167 struct cam_periph *xpt_periph;
169 static periph_init_t xpt_periph_init;
171 static struct periph_driver xpt_driver =
173 xpt_periph_init, "xpt",
174 TAILQ_HEAD_INITIALIZER(xpt_driver.units), /* generation */ 0,
178 PERIPHDRIVER_DECLARE(xpt, xpt_driver);
180 static d_open_t xptopen;
181 static d_close_t xptclose;
182 static d_ioctl_t xptioctl;
183 static d_ioctl_t xptdoioctl;
185 static struct cdevsw xpt_cdevsw = {
186 .d_version = D_VERSION,
194 /* Storage for debugging datastructures */
195 struct cam_path *cam_dpath;
196 u_int32_t cam_dflags = CAM_DEBUG_FLAGS;
197 TUNABLE_INT("kern.cam.dflags", &cam_dflags);
198 SYSCTL_UINT(_kern_cam, OID_AUTO, dflags, CTLFLAG_RW,
199 &cam_dflags, 0, "Enabled debug flags");
200 u_int32_t cam_debug_delay = CAM_DEBUG_DELAY;
201 TUNABLE_INT("kern.cam.debug_delay", &cam_debug_delay);
202 SYSCTL_UINT(_kern_cam, OID_AUTO, debug_delay, CTLFLAG_RW,
203 &cam_debug_delay, 0, "Delay in us after each debug message");
205 /* Our boot-time initialization hook */
206 static int cam_module_event_handler(module_t, int /*modeventtype_t*/, void *);
208 static moduledata_t cam_moduledata = {
210 cam_module_event_handler,
214 static int xpt_init(void *);
216 DECLARE_MODULE(cam, cam_moduledata, SI_SUB_CONFIGURE, SI_ORDER_SECOND);
217 MODULE_VERSION(cam, 1);
220 static void xpt_async_bcast(struct async_list *async_head,
221 u_int32_t async_code,
222 struct cam_path *path,
224 static path_id_t xptnextfreepathid(void);
225 static path_id_t xptpathid(const char *sim_name, int sim_unit, int sim_bus);
226 static union ccb *xpt_get_ccb(struct cam_ed *device);
227 static void xpt_run_dev_allocq(struct cam_ed *device);
228 static void xpt_run_devq(struct cam_devq *devq);
229 static timeout_t xpt_release_devq_timeout;
230 static void xpt_release_simq_timeout(void *arg) __unused;
231 static void xpt_release_bus(struct cam_eb *bus);
232 static void xpt_release_devq_device(struct cam_ed *dev, u_int count,
234 static struct cam_et*
235 xpt_alloc_target(struct cam_eb *bus, target_id_t target_id);
236 static void xpt_release_target(struct cam_et *target);
237 static struct cam_eb*
238 xpt_find_bus(path_id_t path_id);
239 static struct cam_et*
240 xpt_find_target(struct cam_eb *bus, target_id_t target_id);
241 static struct cam_ed*
242 xpt_find_device(struct cam_et *target, lun_id_t lun_id);
243 static void xpt_config(void *arg);
244 static xpt_devicefunc_t xptpassannouncefunc;
245 static void xptaction(struct cam_sim *sim, union ccb *work_ccb);
246 static void xptpoll(struct cam_sim *sim);
247 static void camisr(void *);
248 static void camisr_runqueue(struct cam_sim *);
249 static dev_match_ret xptbusmatch(struct dev_match_pattern *patterns,
250 u_int num_patterns, struct cam_eb *bus);
251 static dev_match_ret xptdevicematch(struct dev_match_pattern *patterns,
253 struct cam_ed *device);
254 static dev_match_ret xptperiphmatch(struct dev_match_pattern *patterns,
256 struct cam_periph *periph);
257 static xpt_busfunc_t xptedtbusfunc;
258 static xpt_targetfunc_t xptedttargetfunc;
259 static xpt_devicefunc_t xptedtdevicefunc;
260 static xpt_periphfunc_t xptedtperiphfunc;
261 static xpt_pdrvfunc_t xptplistpdrvfunc;
262 static xpt_periphfunc_t xptplistperiphfunc;
263 static int xptedtmatch(struct ccb_dev_match *cdm);
264 static int xptperiphlistmatch(struct ccb_dev_match *cdm);
265 static int xptbustraverse(struct cam_eb *start_bus,
266 xpt_busfunc_t *tr_func, void *arg);
267 static int xpttargettraverse(struct cam_eb *bus,
268 struct cam_et *start_target,
269 xpt_targetfunc_t *tr_func, void *arg);
270 static int xptdevicetraverse(struct cam_et *target,
271 struct cam_ed *start_device,
272 xpt_devicefunc_t *tr_func, void *arg);
273 static int xptperiphtraverse(struct cam_ed *device,
274 struct cam_periph *start_periph,
275 xpt_periphfunc_t *tr_func, void *arg);
276 static int xptpdrvtraverse(struct periph_driver **start_pdrv,
277 xpt_pdrvfunc_t *tr_func, void *arg);
278 static int xptpdperiphtraverse(struct periph_driver **pdrv,
279 struct cam_periph *start_periph,
280 xpt_periphfunc_t *tr_func,
282 static xpt_busfunc_t xptdefbusfunc;
283 static xpt_targetfunc_t xptdeftargetfunc;
284 static xpt_devicefunc_t xptdefdevicefunc;
285 static xpt_periphfunc_t xptdefperiphfunc;
286 static void xpt_finishconfig_task(void *context, int pending);
287 static void xpt_dev_async_default(u_int32_t async_code,
289 struct cam_et *target,
290 struct cam_ed *device,
292 static struct cam_ed * xpt_alloc_device_default(struct cam_eb *bus,
293 struct cam_et *target,
295 static xpt_devicefunc_t xptsetasyncfunc;
296 static xpt_busfunc_t xptsetasyncbusfunc;
297 static cam_status xptregister(struct cam_periph *periph,
299 static __inline int periph_is_queued(struct cam_periph *periph);
300 static __inline int device_is_queued(struct cam_ed *device);
303 xpt_schedule_devq(struct cam_devq *devq, struct cam_ed *dev)
307 if ((dev->ccbq.queue.entries > 0) &&
308 (dev->ccbq.dev_openings > 0) &&
309 (dev->ccbq.queue.qfrozen_cnt == 0)) {
311 * The priority of a device waiting for controller
312 * resources is that of the highest priority CCB
316 xpt_schedule_dev(&devq->send_queue,
317 &dev->devq_entry.pinfo,
318 CAMQ_GET_PRIO(&dev->ccbq.queue));
326 periph_is_queued(struct cam_periph *periph)
328 return (periph->pinfo.index != CAM_UNQUEUED_INDEX);
332 device_is_queued(struct cam_ed *device)
334 return (device->devq_entry.pinfo.index != CAM_UNQUEUED_INDEX);
340 make_dev(&xpt_cdevsw, 0, UID_ROOT, GID_OPERATOR, 0600, "xpt0");
344 xptdone(struct cam_periph *periph, union ccb *done_ccb)
346 /* Caller will release the CCB */
347 wakeup(&done_ccb->ccb_h.cbfcnp);
351 xptopen(struct cdev *dev, int flags, int fmt, struct thread *td)
355 * Only allow read-write access.
357 if (((flags & FWRITE) == 0) || ((flags & FREAD) == 0))
361 * We don't allow nonblocking access.
363 if ((flags & O_NONBLOCK) != 0) {
364 printf("%s: can't do nonblocking access\n", devtoname(dev));
368 /* Mark ourselves open */
369 mtx_lock(&xsoftc.xpt_lock);
370 xsoftc.flags |= XPT_FLAG_OPEN;
371 mtx_unlock(&xsoftc.xpt_lock);
377 xptclose(struct cdev *dev, int flag, int fmt, struct thread *td)
380 /* Mark ourselves closed */
381 mtx_lock(&xsoftc.xpt_lock);
382 xsoftc.flags &= ~XPT_FLAG_OPEN;
383 mtx_unlock(&xsoftc.xpt_lock);
389 * Don't automatically grab the xpt softc lock here even though this is going
390 * through the xpt device. The xpt device is really just a back door for
391 * accessing other devices and SIMs, so the right thing to do is to grab
392 * the appropriate SIM lock once the bus/SIM is located.
395 xptioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td)
399 if ((error = xptdoioctl(dev, cmd, addr, flag, td)) == ENOTTY) {
400 error = cam_compat_ioctl(dev, &cmd, &addr, &flag, td);
402 return (xptdoioctl(dev, cmd, addr, flag, td));
408 xptdoioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td)
416 * For the transport layer CAMIOCOMMAND ioctl, we really only want
417 * to accept CCB types that don't quite make sense to send through a
418 * passthrough driver. XPT_PATH_INQ is an exception to this, as stated
426 inccb = (union ccb *)addr;
428 bus = xpt_find_bus(inccb->ccb_h.path_id);
432 switch (inccb->ccb_h.func_code) {
435 if (inccb->ccb_h.target_id != CAM_TARGET_WILDCARD ||
436 inccb->ccb_h.target_lun != CAM_LUN_WILDCARD) {
437 xpt_release_bus(bus);
442 if (inccb->ccb_h.target_id == CAM_TARGET_WILDCARD ||
443 inccb->ccb_h.target_lun != CAM_LUN_WILDCARD) {
444 xpt_release_bus(bus);
452 switch(inccb->ccb_h.func_code) {
460 ccb = xpt_alloc_ccb();
462 CAM_SIM_LOCK(bus->sim);
465 * Create a path using the bus, target, and lun the
468 if (xpt_create_path(&ccb->ccb_h.path, NULL,
469 inccb->ccb_h.path_id,
470 inccb->ccb_h.target_id,
471 inccb->ccb_h.target_lun) !=
474 CAM_SIM_UNLOCK(bus->sim);
478 /* Ensure all of our fields are correct */
479 xpt_setup_ccb(&ccb->ccb_h, ccb->ccb_h.path,
480 inccb->ccb_h.pinfo.priority);
481 xpt_merge_ccb(ccb, inccb);
482 ccb->ccb_h.cbfcnp = xptdone;
483 cam_periph_runccb(ccb, NULL, 0, 0, NULL);
484 bcopy(ccb, inccb, sizeof(union ccb));
485 xpt_free_path(ccb->ccb_h.path);
487 CAM_SIM_UNLOCK(bus->sim);
494 * This is an immediate CCB, so it's okay to
495 * allocate it on the stack.
498 CAM_SIM_LOCK(bus->sim);
501 * Create a path using the bus, target, and lun the
504 if (xpt_create_path(&ccb.ccb_h.path, NULL,
505 inccb->ccb_h.path_id,
506 inccb->ccb_h.target_id,
507 inccb->ccb_h.target_lun) !=
510 CAM_SIM_UNLOCK(bus->sim);
513 /* Ensure all of our fields are correct */
514 xpt_setup_ccb(&ccb.ccb_h, ccb.ccb_h.path,
515 inccb->ccb_h.pinfo.priority);
516 xpt_merge_ccb(&ccb, inccb);
517 ccb.ccb_h.cbfcnp = xptdone;
519 bcopy(&ccb, inccb, sizeof(union ccb));
520 xpt_free_path(ccb.ccb_h.path);
521 CAM_SIM_UNLOCK(bus->sim);
525 case XPT_DEV_MATCH: {
526 struct cam_periph_map_info mapinfo;
527 struct cam_path *old_path;
530 * We can't deal with physical addresses for this
531 * type of transaction.
533 if ((inccb->ccb_h.flags & CAM_DATA_MASK) !=
540 * Save this in case the caller had it set to
541 * something in particular.
543 old_path = inccb->ccb_h.path;
546 * We really don't need a path for the matching
547 * code. The path is needed because of the
548 * debugging statements in xpt_action(). They
549 * assume that the CCB has a valid path.
551 inccb->ccb_h.path = xpt_periph->path;
553 bzero(&mapinfo, sizeof(mapinfo));
556 * Map the pattern and match buffers into kernel
557 * virtual address space.
559 error = cam_periph_mapmem(inccb, &mapinfo);
562 inccb->ccb_h.path = old_path;
567 * This is an immediate CCB, we can send it on directly.
569 CAM_SIM_LOCK(xpt_path_sim(xpt_periph->path));
571 CAM_SIM_UNLOCK(xpt_path_sim(xpt_periph->path));
574 * Map the buffers back into user space.
576 cam_periph_unmapmem(inccb, &mapinfo);
578 inccb->ccb_h.path = old_path;
587 xpt_release_bus(bus);
591 * This is the getpassthru ioctl. It takes a XPT_GDEVLIST ccb as input,
592 * with the periphal driver name and unit name filled in. The other
593 * fields don't really matter as input. The passthrough driver name
594 * ("pass"), and unit number are passed back in the ccb. The current
595 * device generation number, and the index into the device peripheral
596 * driver list, and the status are also passed back. Note that
597 * since we do everything in one pass, unlike the XPT_GDEVLIST ccb,
598 * we never return a status of CAM_GDEVLIST_LIST_CHANGED. It is
599 * (or rather should be) impossible for the device peripheral driver
600 * list to change since we look at the whole thing in one pass, and
601 * we do it with lock protection.
604 case CAMGETPASSTHRU: {
606 struct cam_periph *periph;
607 struct periph_driver **p_drv;
610 int base_periph_found;
612 ccb = (union ccb *)addr;
613 unit = ccb->cgdl.unit_number;
614 name = ccb->cgdl.periph_name;
615 base_periph_found = 0;
618 * Sanity check -- make sure we don't get a null peripheral
621 if (*ccb->cgdl.periph_name == '\0') {
626 /* Keep the list from changing while we traverse it */
629 /* first find our driver in the list of drivers */
630 for (p_drv = periph_drivers; *p_drv != NULL; p_drv++)
631 if (strcmp((*p_drv)->driver_name, name) == 0)
634 if (*p_drv == NULL) {
636 ccb->ccb_h.status = CAM_REQ_CMP_ERR;
637 ccb->cgdl.status = CAM_GDEVLIST_ERROR;
638 *ccb->cgdl.periph_name = '\0';
639 ccb->cgdl.unit_number = 0;
645 * Run through every peripheral instance of this driver
646 * and check to see whether it matches the unit passed
647 * in by the user. If it does, get out of the loops and
648 * find the passthrough driver associated with that
651 for (periph = TAILQ_FIRST(&(*p_drv)->units); periph != NULL;
652 periph = TAILQ_NEXT(periph, unit_links)) {
654 if (periph->unit_number == unit)
658 * If we found the peripheral driver that the user passed
659 * in, go through all of the peripheral drivers for that
660 * particular device and look for a passthrough driver.
662 if (periph != NULL) {
663 struct cam_ed *device;
666 base_periph_found = 1;
667 device = periph->path->device;
668 for (i = 0, periph = SLIST_FIRST(&device->periphs);
670 periph = SLIST_NEXT(periph, periph_links), i++) {
672 * Check to see whether we have a
673 * passthrough device or not.
675 if (strcmp(periph->periph_name, "pass") == 0) {
677 * Fill in the getdevlist fields.
679 strcpy(ccb->cgdl.periph_name,
680 periph->periph_name);
681 ccb->cgdl.unit_number =
683 if (SLIST_NEXT(periph, periph_links))
685 CAM_GDEVLIST_MORE_DEVS;
688 CAM_GDEVLIST_LAST_DEVICE;
689 ccb->cgdl.generation =
693 * Fill in some CCB header fields
694 * that the user may want.
697 periph->path->bus->path_id;
698 ccb->ccb_h.target_id =
699 periph->path->target->target_id;
700 ccb->ccb_h.target_lun =
701 periph->path->device->lun_id;
702 ccb->ccb_h.status = CAM_REQ_CMP;
709 * If the periph is null here, one of two things has
710 * happened. The first possibility is that we couldn't
711 * find the unit number of the particular peripheral driver
712 * that the user is asking about. e.g. the user asks for
713 * the passthrough driver for "da11". We find the list of
714 * "da" peripherals all right, but there is no unit 11.
715 * The other possibility is that we went through the list
716 * of peripheral drivers attached to the device structure,
717 * but didn't find one with the name "pass". Either way,
718 * we return ENOENT, since we couldn't find something.
720 if (periph == NULL) {
721 ccb->ccb_h.status = CAM_REQ_CMP_ERR;
722 ccb->cgdl.status = CAM_GDEVLIST_ERROR;
723 *ccb->cgdl.periph_name = '\0';
724 ccb->cgdl.unit_number = 0;
727 * It is unfortunate that this is even necessary,
728 * but there are many, many clueless users out there.
729 * If this is true, the user is looking for the
730 * passthrough driver, but doesn't have one in his
733 if (base_periph_found == 1) {
734 printf("xptioctl: pass driver is not in the "
736 printf("xptioctl: put \"device pass\" in "
737 "your kernel config file\n");
752 cam_module_event_handler(module_t mod, int what, void *arg)
758 if ((error = xpt_init(NULL)) != 0)
771 xpt_rescan_done(struct cam_periph *periph, union ccb *done_ccb)
774 if (done_ccb->ccb_h.ppriv_ptr1 == NULL) {
775 xpt_free_path(done_ccb->ccb_h.path);
776 xpt_free_ccb(done_ccb);
778 done_ccb->ccb_h.cbfcnp = done_ccb->ccb_h.ppriv_ptr1;
779 (*done_ccb->ccb_h.cbfcnp)(periph, done_ccb);
784 /* thread to handle bus rescans */
786 xpt_scanner_thread(void *dummy)
793 if (TAILQ_EMPTY(&xsoftc.ccb_scanq))
794 msleep(&xsoftc.ccb_scanq, &xsoftc.xpt_topo_lock, PRIBIO,
796 if ((ccb = (union ccb *)TAILQ_FIRST(&xsoftc.ccb_scanq)) != NULL) {
797 TAILQ_REMOVE(&xsoftc.ccb_scanq, &ccb->ccb_h, sim_links.tqe);
800 sim = ccb->ccb_h.path->bus->sim;
811 xpt_rescan(union ccb *ccb)
815 /* Prepare request */
816 if (ccb->ccb_h.path->target->target_id == CAM_TARGET_WILDCARD &&
817 ccb->ccb_h.path->device->lun_id == CAM_LUN_WILDCARD)
818 ccb->ccb_h.func_code = XPT_SCAN_BUS;
819 else if (ccb->ccb_h.path->target->target_id != CAM_TARGET_WILDCARD &&
820 ccb->ccb_h.path->device->lun_id == CAM_LUN_WILDCARD)
821 ccb->ccb_h.func_code = XPT_SCAN_TGT;
822 else if (ccb->ccb_h.path->target->target_id != CAM_TARGET_WILDCARD &&
823 ccb->ccb_h.path->device->lun_id != CAM_LUN_WILDCARD)
824 ccb->ccb_h.func_code = XPT_SCAN_LUN;
826 xpt_print(ccb->ccb_h.path, "illegal scan path\n");
827 xpt_free_path(ccb->ccb_h.path);
831 ccb->ccb_h.ppriv_ptr1 = ccb->ccb_h.cbfcnp;
832 ccb->ccb_h.cbfcnp = xpt_rescan_done;
833 xpt_setup_ccb(&ccb->ccb_h, ccb->ccb_h.path, CAM_PRIORITY_XPT);
834 /* Don't make duplicate entries for the same paths. */
836 if (ccb->ccb_h.ppriv_ptr1 == NULL) {
837 TAILQ_FOREACH(hdr, &xsoftc.ccb_scanq, sim_links.tqe) {
838 if (xpt_path_comp(hdr->path, ccb->ccb_h.path) == 0) {
839 wakeup(&xsoftc.ccb_scanq);
841 xpt_print(ccb->ccb_h.path, "rescan already queued\n");
842 xpt_free_path(ccb->ccb_h.path);
848 TAILQ_INSERT_TAIL(&xsoftc.ccb_scanq, &ccb->ccb_h, sim_links.tqe);
849 xsoftc.buses_to_config++;
850 wakeup(&xsoftc.ccb_scanq);
854 /* Functions accessed by the peripheral drivers */
856 xpt_init(void *dummy)
858 struct cam_sim *xpt_sim;
859 struct cam_path *path;
860 struct cam_devq *devq;
863 TAILQ_INIT(&xsoftc.xpt_busses);
864 TAILQ_INIT(&cam_simq);
865 TAILQ_INIT(&xsoftc.ccb_scanq);
866 STAILQ_INIT(&xsoftc.highpowerq);
867 xsoftc.num_highpower = CAM_MAX_HIGHPOWER;
869 mtx_init(&cam_simq_lock, "CAM SIMQ lock", NULL, MTX_DEF);
870 mtx_init(&xsoftc.xpt_lock, "XPT lock", NULL, MTX_DEF);
871 mtx_init(&xsoftc.xpt_topo_lock, "XPT topology lock", NULL, MTX_DEF);
873 #ifdef CAM_BOOT_DELAY
875 * Override this value at compile time to assist our users
876 * who don't use loader to boot a kernel.
878 xsoftc.boot_delay = CAM_BOOT_DELAY;
881 * The xpt layer is, itself, the equivelent of a SIM.
882 * Allow 16 ccbs in the ccb pool for it. This should
883 * give decent parallelism when we probe busses and
884 * perform other XPT functions.
886 devq = cam_simq_alloc(16);
887 xpt_sim = cam_sim_alloc(xptaction,
892 /*mtx*/&xsoftc.xpt_lock,
893 /*max_dev_transactions*/0,
894 /*max_tagged_dev_transactions*/0,
899 mtx_lock(&xsoftc.xpt_lock);
900 if ((status = xpt_bus_register(xpt_sim, NULL, 0)) != CAM_SUCCESS) {
901 mtx_unlock(&xsoftc.xpt_lock);
902 printf("xpt_init: xpt_bus_register failed with status %#x,"
903 " failing attach\n", status);
908 * Looking at the XPT from the SIM layer, the XPT is
909 * the equivelent of a peripheral driver. Allocate
910 * a peripheral driver entry for us.
912 if ((status = xpt_create_path(&path, NULL, CAM_XPT_PATH_ID,
914 CAM_LUN_WILDCARD)) != CAM_REQ_CMP) {
915 mtx_unlock(&xsoftc.xpt_lock);
916 printf("xpt_init: xpt_create_path failed with status %#x,"
917 " failing attach\n", status);
921 cam_periph_alloc(xptregister, NULL, NULL, NULL, "xpt", CAM_PERIPH_BIO,
922 path, NULL, 0, xpt_sim);
924 mtx_unlock(&xsoftc.xpt_lock);
925 /* Install our software interrupt handlers */
926 swi_add(NULL, "cambio", camisr, NULL, SWI_CAMBIO, INTR_MPSAFE, &cambio_ih);
928 * Register a callback for when interrupts are enabled.
930 xsoftc.xpt_config_hook =
931 (struct intr_config_hook *)malloc(sizeof(struct intr_config_hook),
932 M_CAMXPT, M_NOWAIT | M_ZERO);
933 if (xsoftc.xpt_config_hook == NULL) {
934 printf("xpt_init: Cannot malloc config hook "
935 "- failing attach\n");
938 xsoftc.xpt_config_hook->ich_func = xpt_config;
939 if (config_intrhook_establish(xsoftc.xpt_config_hook) != 0) {
940 free (xsoftc.xpt_config_hook, M_CAMXPT);
941 printf("xpt_init: config_intrhook_establish failed "
942 "- failing attach\n");
949 xptregister(struct cam_periph *periph, void *arg)
951 struct cam_sim *xpt_sim;
953 if (periph == NULL) {
954 printf("xptregister: periph was NULL!!\n");
955 return(CAM_REQ_CMP_ERR);
958 xpt_sim = (struct cam_sim *)arg;
959 xpt_sim->softc = periph;
961 periph->softc = NULL;
967 xpt_add_periph(struct cam_periph *periph)
969 struct cam_ed *device;
971 struct periph_list *periph_head;
973 mtx_assert(periph->sim->mtx, MA_OWNED);
975 device = periph->path->device;
977 periph_head = &device->periphs;
979 status = CAM_REQ_CMP;
981 if (device != NULL) {
983 * Make room for this peripheral
984 * so it will fit in the queue
985 * when it's scheduled to run
987 status = camq_resize(&device->drvq,
988 device->drvq.array_size + 1);
990 device->generation++;
992 SLIST_INSERT_HEAD(periph_head, periph, periph_links);
999 xpt_remove_periph(struct cam_periph *periph)
1001 struct cam_ed *device;
1003 mtx_assert(periph->sim->mtx, MA_OWNED);
1005 device = periph->path->device;
1007 if (device != NULL) {
1008 struct periph_list *periph_head;
1010 periph_head = &device->periphs;
1012 /* Release the slot for this peripheral */
1013 camq_resize(&device->drvq, device->drvq.array_size - 1);
1015 device->generation++;
1017 SLIST_REMOVE(periph_head, periph, cam_periph, periph_links);
1023 xpt_announce_periph(struct cam_periph *periph, char *announce_string)
1025 struct cam_path *path = periph->path;
1027 mtx_assert(periph->sim->mtx, MA_OWNED);
1029 printf("%s%d at %s%d bus %d scbus%d target %d lun %d\n",
1030 periph->periph_name, periph->unit_number,
1031 path->bus->sim->sim_name,
1032 path->bus->sim->unit_number,
1033 path->bus->sim->bus_id,
1035 path->target->target_id,
1036 path->device->lun_id);
1037 printf("%s%d: ", periph->periph_name, periph->unit_number);
1038 if (path->device->protocol == PROTO_SCSI)
1039 scsi_print_inquiry(&path->device->inq_data);
1040 else if (path->device->protocol == PROTO_ATA ||
1041 path->device->protocol == PROTO_SATAPM)
1042 ata_print_ident(&path->device->ident_data);
1043 else if (path->device->protocol == PROTO_SEMB)
1045 (struct sep_identify_data *)&path->device->ident_data);
1047 printf("Unknown protocol device\n");
1048 if (bootverbose && path->device->serial_num_len > 0) {
1049 /* Don't wrap the screen - print only the first 60 chars */
1050 printf("%s%d: Serial Number %.60s\n", periph->periph_name,
1051 periph->unit_number, path->device->serial_num);
1053 /* Announce transport details. */
1054 (*(path->bus->xport->announce))(periph);
1055 /* Announce command queueing. */
1056 if (path->device->inq_flags & SID_CmdQue
1057 || path->device->flags & CAM_DEV_TAG_AFTER_COUNT) {
1058 printf("%s%d: Command Queueing enabled\n",
1059 periph->periph_name, periph->unit_number);
1061 /* Announce caller's details if they've passed in. */
1062 if (announce_string != NULL)
1063 printf("%s%d: %s\n", periph->periph_name,
1064 periph->unit_number, announce_string);
1068 xpt_announce_quirks(struct cam_periph *periph, int quirks, char *bit_string)
1071 printf("%s%d: quirks=0x%b\n", periph->periph_name,
1072 periph->unit_number, quirks, bit_string);
1077 xpt_getattr(char *buf, size_t len, const char *attr, struct cam_path *path)
1080 struct ccb_dev_advinfo cdai;
1081 struct scsi_vpd_id_descriptor *idd;
1083 mtx_assert(path->bus->sim->mtx, MA_OWNED);
1085 memset(&cdai, 0, sizeof(cdai));
1086 xpt_setup_ccb(&cdai.ccb_h, path, CAM_PRIORITY_NORMAL);
1087 cdai.ccb_h.func_code = XPT_DEV_ADVINFO;
1090 if (!strcmp(attr, "GEOM::ident"))
1091 cdai.buftype = CDAI_TYPE_SERIAL_NUM;
1092 else if (!strcmp(attr, "GEOM::physpath"))
1093 cdai.buftype = CDAI_TYPE_PHYS_PATH;
1094 else if (strcmp(attr, "GEOM::lunid") == 0 ||
1095 strcmp(attr, "GEOM::lunname") == 0) {
1096 cdai.buftype = CDAI_TYPE_SCSI_DEVID;
1097 cdai.bufsiz = CAM_SCSI_DEVID_MAXLEN;
1101 cdai.buf = malloc(cdai.bufsiz, M_CAMXPT, M_NOWAIT|M_ZERO);
1102 if (cdai.buf == NULL) {
1106 xpt_action((union ccb *)&cdai); /* can only be synchronous */
1107 if ((cdai.ccb_h.status & CAM_DEV_QFRZN) != 0)
1108 cam_release_devq(cdai.ccb_h.path, 0, 0, 0, FALSE);
1109 if (cdai.provsiz == 0)
1111 if (cdai.buftype == CDAI_TYPE_SCSI_DEVID) {
1112 if (strcmp(attr, "GEOM::lunid") == 0) {
1113 idd = scsi_get_devid((struct scsi_vpd_device_id *)cdai.buf,
1114 cdai.provsiz, scsi_devid_is_lun_naa);
1116 idd = scsi_get_devid((struct scsi_vpd_device_id *)cdai.buf,
1117 cdai.provsiz, scsi_devid_is_lun_eui64);
1121 idd = scsi_get_devid((struct scsi_vpd_device_id *)cdai.buf,
1122 cdai.provsiz, scsi_devid_is_lun_t10);
1124 idd = scsi_get_devid((struct scsi_vpd_device_id *)cdai.buf,
1125 cdai.provsiz, scsi_devid_is_lun_name);
1129 if ((idd->proto_codeset & SVPD_ID_CODESET_MASK) == SVPD_ID_CODESET_ASCII ||
1130 (idd->proto_codeset & SVPD_ID_CODESET_MASK) == SVPD_ID_CODESET_UTF8) {
1131 l = strnlen(idd->identifier, idd->length);
1133 bcopy(idd->identifier, buf, l);
1138 if (idd->length * 2 < len) {
1139 for (l = 0; l < idd->length; l++)
1140 sprintf(buf + l * 2, "%02x",
1141 idd->identifier[l]);
1147 if (strlcpy(buf, cdai.buf, len) >= len)
1152 if (cdai.buf != NULL)
1153 free(cdai.buf, M_CAMXPT);
1157 static dev_match_ret
1158 xptbusmatch(struct dev_match_pattern *patterns, u_int num_patterns,
1161 dev_match_ret retval;
1164 retval = DM_RET_NONE;
1167 * If we aren't given something to match against, that's an error.
1170 return(DM_RET_ERROR);
1173 * If there are no match entries, then this bus matches no
1176 if ((patterns == NULL) || (num_patterns == 0))
1177 return(DM_RET_DESCEND | DM_RET_COPY);
1179 for (i = 0; i < num_patterns; i++) {
1180 struct bus_match_pattern *cur_pattern;
1183 * If the pattern in question isn't for a bus node, we
1184 * aren't interested. However, we do indicate to the
1185 * calling routine that we should continue descending the
1186 * tree, since the user wants to match against lower-level
1189 if (patterns[i].type != DEV_MATCH_BUS) {
1190 if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)
1191 retval |= DM_RET_DESCEND;
1195 cur_pattern = &patterns[i].pattern.bus_pattern;
1198 * If they want to match any bus node, we give them any
1201 if (cur_pattern->flags == BUS_MATCH_ANY) {
1202 /* set the copy flag */
1203 retval |= DM_RET_COPY;
1206 * If we've already decided on an action, go ahead
1209 if ((retval & DM_RET_ACTION_MASK) != DM_RET_NONE)
1214 * Not sure why someone would do this...
1216 if (cur_pattern->flags == BUS_MATCH_NONE)
1219 if (((cur_pattern->flags & BUS_MATCH_PATH) != 0)
1220 && (cur_pattern->path_id != bus->path_id))
1223 if (((cur_pattern->flags & BUS_MATCH_BUS_ID) != 0)
1224 && (cur_pattern->bus_id != bus->sim->bus_id))
1227 if (((cur_pattern->flags & BUS_MATCH_UNIT) != 0)
1228 && (cur_pattern->unit_number != bus->sim->unit_number))
1231 if (((cur_pattern->flags & BUS_MATCH_NAME) != 0)
1232 && (strncmp(cur_pattern->dev_name, bus->sim->sim_name,
1237 * If we get to this point, the user definitely wants
1238 * information on this bus. So tell the caller to copy the
1241 retval |= DM_RET_COPY;
1244 * If the return action has been set to descend, then we
1245 * know that we've already seen a non-bus matching
1246 * expression, therefore we need to further descend the tree.
1247 * This won't change by continuing around the loop, so we
1248 * go ahead and return. If we haven't seen a non-bus
1249 * matching expression, we keep going around the loop until
1250 * we exhaust the matching expressions. We'll set the stop
1251 * flag once we fall out of the loop.
1253 if ((retval & DM_RET_ACTION_MASK) == DM_RET_DESCEND)
1258 * If the return action hasn't been set to descend yet, that means
1259 * we haven't seen anything other than bus matching patterns. So
1260 * tell the caller to stop descending the tree -- the user doesn't
1261 * want to match against lower level tree elements.
1263 if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)
1264 retval |= DM_RET_STOP;
1269 static dev_match_ret
1270 xptdevicematch(struct dev_match_pattern *patterns, u_int num_patterns,
1271 struct cam_ed *device)
1273 dev_match_ret retval;
1276 retval = DM_RET_NONE;
1279 * If we aren't given something to match against, that's an error.
1282 return(DM_RET_ERROR);
1285 * If there are no match entries, then this device matches no
1288 if ((patterns == NULL) || (num_patterns == 0))
1289 return(DM_RET_DESCEND | DM_RET_COPY);
1291 for (i = 0; i < num_patterns; i++) {
1292 struct device_match_pattern *cur_pattern;
1293 struct scsi_vpd_device_id *device_id_page;
1296 * If the pattern in question isn't for a device node, we
1297 * aren't interested.
1299 if (patterns[i].type != DEV_MATCH_DEVICE) {
1300 if ((patterns[i].type == DEV_MATCH_PERIPH)
1301 && ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE))
1302 retval |= DM_RET_DESCEND;
1306 cur_pattern = &patterns[i].pattern.device_pattern;
1308 /* Error out if mutually exclusive options are specified. */
1309 if ((cur_pattern->flags & (DEV_MATCH_INQUIRY|DEV_MATCH_DEVID))
1310 == (DEV_MATCH_INQUIRY|DEV_MATCH_DEVID))
1311 return(DM_RET_ERROR);
1314 * If they want to match any device node, we give them any
1317 if (cur_pattern->flags == DEV_MATCH_ANY)
1321 * Not sure why someone would do this...
1323 if (cur_pattern->flags == DEV_MATCH_NONE)
1326 if (((cur_pattern->flags & DEV_MATCH_PATH) != 0)
1327 && (cur_pattern->path_id != device->target->bus->path_id))
1330 if (((cur_pattern->flags & DEV_MATCH_TARGET) != 0)
1331 && (cur_pattern->target_id != device->target->target_id))
1334 if (((cur_pattern->flags & DEV_MATCH_LUN) != 0)
1335 && (cur_pattern->target_lun != device->lun_id))
1338 if (((cur_pattern->flags & DEV_MATCH_INQUIRY) != 0)
1339 && (cam_quirkmatch((caddr_t)&device->inq_data,
1340 (caddr_t)&cur_pattern->data.inq_pat,
1341 1, sizeof(cur_pattern->data.inq_pat),
1342 scsi_static_inquiry_match) == NULL))
1345 device_id_page = (struct scsi_vpd_device_id *)device->device_id;
1346 if (((cur_pattern->flags & DEV_MATCH_DEVID) != 0)
1347 && (device->device_id_len < SVPD_DEVICE_ID_HDR_LEN
1348 || scsi_devid_match((uint8_t *)device_id_page->desc_list,
1349 device->device_id_len
1350 - SVPD_DEVICE_ID_HDR_LEN,
1351 cur_pattern->data.devid_pat.id,
1352 cur_pattern->data.devid_pat.id_len) != 0))
1357 * If we get to this point, the user definitely wants
1358 * information on this device. So tell the caller to copy
1361 retval |= DM_RET_COPY;
1364 * If the return action has been set to descend, then we
1365 * know that we've already seen a peripheral matching
1366 * expression, therefore we need to further descend the tree.
1367 * This won't change by continuing around the loop, so we
1368 * go ahead and return. If we haven't seen a peripheral
1369 * matching expression, we keep going around the loop until
1370 * we exhaust the matching expressions. We'll set the stop
1371 * flag once we fall out of the loop.
1373 if ((retval & DM_RET_ACTION_MASK) == DM_RET_DESCEND)
1378 * If the return action hasn't been set to descend yet, that means
1379 * we haven't seen any peripheral matching patterns. So tell the
1380 * caller to stop descending the tree -- the user doesn't want to
1381 * match against lower level tree elements.
1383 if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)
1384 retval |= DM_RET_STOP;
1390 * Match a single peripheral against any number of match patterns.
1392 static dev_match_ret
1393 xptperiphmatch(struct dev_match_pattern *patterns, u_int num_patterns,
1394 struct cam_periph *periph)
1396 dev_match_ret retval;
1400 * If we aren't given something to match against, that's an error.
1403 return(DM_RET_ERROR);
1406 * If there are no match entries, then this peripheral matches no
1409 if ((patterns == NULL) || (num_patterns == 0))
1410 return(DM_RET_STOP | DM_RET_COPY);
1413 * There aren't any nodes below a peripheral node, so there's no
1414 * reason to descend the tree any further.
1416 retval = DM_RET_STOP;
1418 for (i = 0; i < num_patterns; i++) {
1419 struct periph_match_pattern *cur_pattern;
1422 * If the pattern in question isn't for a peripheral, we
1423 * aren't interested.
1425 if (patterns[i].type != DEV_MATCH_PERIPH)
1428 cur_pattern = &patterns[i].pattern.periph_pattern;
1431 * If they want to match on anything, then we will do so.
1433 if (cur_pattern->flags == PERIPH_MATCH_ANY) {
1434 /* set the copy flag */
1435 retval |= DM_RET_COPY;
1438 * We've already set the return action to stop,
1439 * since there are no nodes below peripherals in
1446 * Not sure why someone would do this...
1448 if (cur_pattern->flags == PERIPH_MATCH_NONE)
1451 if (((cur_pattern->flags & PERIPH_MATCH_PATH) != 0)
1452 && (cur_pattern->path_id != periph->path->bus->path_id))
1456 * For the target and lun id's, we have to make sure the
1457 * target and lun pointers aren't NULL. The xpt peripheral
1458 * has a wildcard target and device.
1460 if (((cur_pattern->flags & PERIPH_MATCH_TARGET) != 0)
1461 && ((periph->path->target == NULL)
1462 ||(cur_pattern->target_id != periph->path->target->target_id)))
1465 if (((cur_pattern->flags & PERIPH_MATCH_LUN) != 0)
1466 && ((periph->path->device == NULL)
1467 || (cur_pattern->target_lun != periph->path->device->lun_id)))
1470 if (((cur_pattern->flags & PERIPH_MATCH_UNIT) != 0)
1471 && (cur_pattern->unit_number != periph->unit_number))
1474 if (((cur_pattern->flags & PERIPH_MATCH_NAME) != 0)
1475 && (strncmp(cur_pattern->periph_name, periph->periph_name,
1480 * If we get to this point, the user definitely wants
1481 * information on this peripheral. So tell the caller to
1482 * copy the data out.
1484 retval |= DM_RET_COPY;
1487 * The return action has already been set to stop, since
1488 * peripherals don't have any nodes below them in the EDT.
1494 * If we get to this point, the peripheral that was passed in
1495 * doesn't match any of the patterns.
1501 xptedtbusfunc(struct cam_eb *bus, void *arg)
1503 struct ccb_dev_match *cdm;
1504 dev_match_ret retval;
1506 cdm = (struct ccb_dev_match *)arg;
1509 * If our position is for something deeper in the tree, that means
1510 * that we've already seen this node. So, we keep going down.
1512 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
1513 && (cdm->pos.cookie.bus == bus)
1514 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
1515 && (cdm->pos.cookie.target != NULL))
1516 retval = DM_RET_DESCEND;
1518 retval = xptbusmatch(cdm->patterns, cdm->num_patterns, bus);
1521 * If we got an error, bail out of the search.
1523 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
1524 cdm->status = CAM_DEV_MATCH_ERROR;
1529 * If the copy flag is set, copy this bus out.
1531 if (retval & DM_RET_COPY) {
1534 spaceleft = cdm->match_buf_len - (cdm->num_matches *
1535 sizeof(struct dev_match_result));
1538 * If we don't have enough space to put in another
1539 * match result, save our position and tell the
1540 * user there are more devices to check.
1542 if (spaceleft < sizeof(struct dev_match_result)) {
1543 bzero(&cdm->pos, sizeof(cdm->pos));
1544 cdm->pos.position_type =
1545 CAM_DEV_POS_EDT | CAM_DEV_POS_BUS;
1547 cdm->pos.cookie.bus = bus;
1548 cdm->pos.generations[CAM_BUS_GENERATION]=
1549 xsoftc.bus_generation;
1550 cdm->status = CAM_DEV_MATCH_MORE;
1553 j = cdm->num_matches;
1555 cdm->matches[j].type = DEV_MATCH_BUS;
1556 cdm->matches[j].result.bus_result.path_id = bus->path_id;
1557 cdm->matches[j].result.bus_result.bus_id = bus->sim->bus_id;
1558 cdm->matches[j].result.bus_result.unit_number =
1559 bus->sim->unit_number;
1560 strncpy(cdm->matches[j].result.bus_result.dev_name,
1561 bus->sim->sim_name, DEV_IDLEN);
1565 * If the user is only interested in busses, there's no
1566 * reason to descend to the next level in the tree.
1568 if ((retval & DM_RET_ACTION_MASK) == DM_RET_STOP)
1572 * If there is a target generation recorded, check it to
1573 * make sure the target list hasn't changed.
1575 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
1576 && (bus == cdm->pos.cookie.bus)
1577 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
1578 && (cdm->pos.generations[CAM_TARGET_GENERATION] != 0)
1579 && (cdm->pos.generations[CAM_TARGET_GENERATION] !=
1581 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
1585 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
1586 && (cdm->pos.cookie.bus == bus)
1587 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
1588 && (cdm->pos.cookie.target != NULL))
1589 return(xpttargettraverse(bus,
1590 (struct cam_et *)cdm->pos.cookie.target,
1591 xptedttargetfunc, arg));
1593 return(xpttargettraverse(bus, NULL, xptedttargetfunc, arg));
1597 xptedttargetfunc(struct cam_et *target, void *arg)
1599 struct ccb_dev_match *cdm;
1601 cdm = (struct ccb_dev_match *)arg;
1604 * If there is a device list generation recorded, check it to
1605 * make sure the device list hasn't changed.
1607 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
1608 && (cdm->pos.cookie.bus == target->bus)
1609 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
1610 && (cdm->pos.cookie.target == target)
1611 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
1612 && (cdm->pos.generations[CAM_DEV_GENERATION] != 0)
1613 && (cdm->pos.generations[CAM_DEV_GENERATION] !=
1614 target->generation)) {
1615 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
1619 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
1620 && (cdm->pos.cookie.bus == target->bus)
1621 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
1622 && (cdm->pos.cookie.target == target)
1623 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
1624 && (cdm->pos.cookie.device != NULL))
1625 return(xptdevicetraverse(target,
1626 (struct cam_ed *)cdm->pos.cookie.device,
1627 xptedtdevicefunc, arg));
1629 return(xptdevicetraverse(target, NULL, xptedtdevicefunc, arg));
1633 xptedtdevicefunc(struct cam_ed *device, void *arg)
1636 struct ccb_dev_match *cdm;
1637 dev_match_ret retval;
1639 cdm = (struct ccb_dev_match *)arg;
1642 * If our position is for something deeper in the tree, that means
1643 * that we've already seen this node. So, we keep going down.
1645 if ((cdm->pos.position_type & CAM_DEV_POS_DEVICE)
1646 && (cdm->pos.cookie.device == device)
1647 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
1648 && (cdm->pos.cookie.periph != NULL))
1649 retval = DM_RET_DESCEND;
1651 retval = xptdevicematch(cdm->patterns, cdm->num_patterns,
1654 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
1655 cdm->status = CAM_DEV_MATCH_ERROR;
1660 * If the copy flag is set, copy this device out.
1662 if (retval & DM_RET_COPY) {
1665 spaceleft = cdm->match_buf_len - (cdm->num_matches *
1666 sizeof(struct dev_match_result));
1669 * If we don't have enough space to put in another
1670 * match result, save our position and tell the
1671 * user there are more devices to check.
1673 if (spaceleft < sizeof(struct dev_match_result)) {
1674 bzero(&cdm->pos, sizeof(cdm->pos));
1675 cdm->pos.position_type =
1676 CAM_DEV_POS_EDT | CAM_DEV_POS_BUS |
1677 CAM_DEV_POS_TARGET | CAM_DEV_POS_DEVICE;
1679 cdm->pos.cookie.bus = device->target->bus;
1680 cdm->pos.generations[CAM_BUS_GENERATION]=
1681 xsoftc.bus_generation;
1682 cdm->pos.cookie.target = device->target;
1683 cdm->pos.generations[CAM_TARGET_GENERATION] =
1684 device->target->bus->generation;
1685 cdm->pos.cookie.device = device;
1686 cdm->pos.generations[CAM_DEV_GENERATION] =
1687 device->target->generation;
1688 cdm->status = CAM_DEV_MATCH_MORE;
1691 j = cdm->num_matches;
1693 cdm->matches[j].type = DEV_MATCH_DEVICE;
1694 cdm->matches[j].result.device_result.path_id =
1695 device->target->bus->path_id;
1696 cdm->matches[j].result.device_result.target_id =
1697 device->target->target_id;
1698 cdm->matches[j].result.device_result.target_lun =
1700 cdm->matches[j].result.device_result.protocol =
1702 bcopy(&device->inq_data,
1703 &cdm->matches[j].result.device_result.inq_data,
1704 sizeof(struct scsi_inquiry_data));
1705 bcopy(&device->ident_data,
1706 &cdm->matches[j].result.device_result.ident_data,
1707 sizeof(struct ata_params));
1709 /* Let the user know whether this device is unconfigured */
1710 if (device->flags & CAM_DEV_UNCONFIGURED)
1711 cdm->matches[j].result.device_result.flags =
1712 DEV_RESULT_UNCONFIGURED;
1714 cdm->matches[j].result.device_result.flags =
1719 * If the user isn't interested in peripherals, don't descend
1720 * the tree any further.
1722 if ((retval & DM_RET_ACTION_MASK) == DM_RET_STOP)
1726 * If there is a peripheral list generation recorded, make sure
1727 * it hasn't changed.
1729 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
1730 && (device->target->bus == cdm->pos.cookie.bus)
1731 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
1732 && (device->target == cdm->pos.cookie.target)
1733 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
1734 && (device == cdm->pos.cookie.device)
1735 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
1736 && (cdm->pos.generations[CAM_PERIPH_GENERATION] != 0)
1737 && (cdm->pos.generations[CAM_PERIPH_GENERATION] !=
1738 device->generation)){
1739 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
1743 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
1744 && (cdm->pos.cookie.bus == device->target->bus)
1745 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
1746 && (cdm->pos.cookie.target == device->target)
1747 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
1748 && (cdm->pos.cookie.device == device)
1749 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
1750 && (cdm->pos.cookie.periph != NULL))
1751 return(xptperiphtraverse(device,
1752 (struct cam_periph *)cdm->pos.cookie.periph,
1753 xptedtperiphfunc, arg));
1755 return(xptperiphtraverse(device, NULL, xptedtperiphfunc, arg));
1759 xptedtperiphfunc(struct cam_periph *periph, void *arg)
1761 struct ccb_dev_match *cdm;
1762 dev_match_ret retval;
1764 cdm = (struct ccb_dev_match *)arg;
1766 retval = xptperiphmatch(cdm->patterns, cdm->num_patterns, periph);
1768 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
1769 cdm->status = CAM_DEV_MATCH_ERROR;
1774 * If the copy flag is set, copy this peripheral out.
1776 if (retval & DM_RET_COPY) {
1779 spaceleft = cdm->match_buf_len - (cdm->num_matches *
1780 sizeof(struct dev_match_result));
1783 * If we don't have enough space to put in another
1784 * match result, save our position and tell the
1785 * user there are more devices to check.
1787 if (spaceleft < sizeof(struct dev_match_result)) {
1788 bzero(&cdm->pos, sizeof(cdm->pos));
1789 cdm->pos.position_type =
1790 CAM_DEV_POS_EDT | CAM_DEV_POS_BUS |
1791 CAM_DEV_POS_TARGET | CAM_DEV_POS_DEVICE |
1794 cdm->pos.cookie.bus = periph->path->bus;
1795 cdm->pos.generations[CAM_BUS_GENERATION]=
1796 xsoftc.bus_generation;
1797 cdm->pos.cookie.target = periph->path->target;
1798 cdm->pos.generations[CAM_TARGET_GENERATION] =
1799 periph->path->bus->generation;
1800 cdm->pos.cookie.device = periph->path->device;
1801 cdm->pos.generations[CAM_DEV_GENERATION] =
1802 periph->path->target->generation;
1803 cdm->pos.cookie.periph = periph;
1804 cdm->pos.generations[CAM_PERIPH_GENERATION] =
1805 periph->path->device->generation;
1806 cdm->status = CAM_DEV_MATCH_MORE;
1810 j = cdm->num_matches;
1812 cdm->matches[j].type = DEV_MATCH_PERIPH;
1813 cdm->matches[j].result.periph_result.path_id =
1814 periph->path->bus->path_id;
1815 cdm->matches[j].result.periph_result.target_id =
1816 periph->path->target->target_id;
1817 cdm->matches[j].result.periph_result.target_lun =
1818 periph->path->device->lun_id;
1819 cdm->matches[j].result.periph_result.unit_number =
1820 periph->unit_number;
1821 strncpy(cdm->matches[j].result.periph_result.periph_name,
1822 periph->periph_name, DEV_IDLEN);
1829 xptedtmatch(struct ccb_dev_match *cdm)
1833 cdm->num_matches = 0;
1836 * Check the bus list generation. If it has changed, the user
1837 * needs to reset everything and start over.
1839 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
1840 && (cdm->pos.generations[CAM_BUS_GENERATION] != 0)
1841 && (cdm->pos.generations[CAM_BUS_GENERATION] != xsoftc.bus_generation)) {
1842 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
1846 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
1847 && (cdm->pos.cookie.bus != NULL))
1848 ret = xptbustraverse((struct cam_eb *)cdm->pos.cookie.bus,
1849 xptedtbusfunc, cdm);
1851 ret = xptbustraverse(NULL, xptedtbusfunc, cdm);
1854 * If we get back 0, that means that we had to stop before fully
1855 * traversing the EDT. It also means that one of the subroutines
1856 * has set the status field to the proper value. If we get back 1,
1857 * we've fully traversed the EDT and copied out any matching entries.
1860 cdm->status = CAM_DEV_MATCH_LAST;
1866 xptplistpdrvfunc(struct periph_driver **pdrv, void *arg)
1868 struct ccb_dev_match *cdm;
1870 cdm = (struct ccb_dev_match *)arg;
1872 if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR)
1873 && (cdm->pos.cookie.pdrv == pdrv)
1874 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
1875 && (cdm->pos.generations[CAM_PERIPH_GENERATION] != 0)
1876 && (cdm->pos.generations[CAM_PERIPH_GENERATION] !=
1877 (*pdrv)->generation)) {
1878 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
1882 if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR)
1883 && (cdm->pos.cookie.pdrv == pdrv)
1884 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
1885 && (cdm->pos.cookie.periph != NULL))
1886 return(xptpdperiphtraverse(pdrv,
1887 (struct cam_periph *)cdm->pos.cookie.periph,
1888 xptplistperiphfunc, arg));
1890 return(xptpdperiphtraverse(pdrv, NULL,xptplistperiphfunc, arg));
1894 xptplistperiphfunc(struct cam_periph *periph, void *arg)
1896 struct ccb_dev_match *cdm;
1897 dev_match_ret retval;
1899 cdm = (struct ccb_dev_match *)arg;
1901 retval = xptperiphmatch(cdm->patterns, cdm->num_patterns, periph);
1903 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
1904 cdm->status = CAM_DEV_MATCH_ERROR;
1909 * If the copy flag is set, copy this peripheral out.
1911 if (retval & DM_RET_COPY) {
1914 spaceleft = cdm->match_buf_len - (cdm->num_matches *
1915 sizeof(struct dev_match_result));
1918 * If we don't have enough space to put in another
1919 * match result, save our position and tell the
1920 * user there are more devices to check.
1922 if (spaceleft < sizeof(struct dev_match_result)) {
1923 struct periph_driver **pdrv;
1926 bzero(&cdm->pos, sizeof(cdm->pos));
1927 cdm->pos.position_type =
1928 CAM_DEV_POS_PDRV | CAM_DEV_POS_PDPTR |
1932 * This may look a bit non-sensical, but it is
1933 * actually quite logical. There are very few
1934 * peripheral drivers, and bloating every peripheral
1935 * structure with a pointer back to its parent
1936 * peripheral driver linker set entry would cost
1937 * more in the long run than doing this quick lookup.
1939 for (pdrv = periph_drivers; *pdrv != NULL; pdrv++) {
1940 if (strcmp((*pdrv)->driver_name,
1941 periph->periph_name) == 0)
1945 if (*pdrv == NULL) {
1946 cdm->status = CAM_DEV_MATCH_ERROR;
1950 cdm->pos.cookie.pdrv = pdrv;
1952 * The periph generation slot does double duty, as
1953 * does the periph pointer slot. They are used for
1954 * both edt and pdrv lookups and positioning.
1956 cdm->pos.cookie.periph = periph;
1957 cdm->pos.generations[CAM_PERIPH_GENERATION] =
1958 (*pdrv)->generation;
1959 cdm->status = CAM_DEV_MATCH_MORE;
1963 j = cdm->num_matches;
1965 cdm->matches[j].type = DEV_MATCH_PERIPH;
1966 cdm->matches[j].result.periph_result.path_id =
1967 periph->path->bus->path_id;
1970 * The transport layer peripheral doesn't have a target or
1973 if (periph->path->target)
1974 cdm->matches[j].result.periph_result.target_id =
1975 periph->path->target->target_id;
1977 cdm->matches[j].result.periph_result.target_id = -1;
1979 if (periph->path->device)
1980 cdm->matches[j].result.periph_result.target_lun =
1981 periph->path->device->lun_id;
1983 cdm->matches[j].result.periph_result.target_lun = -1;
1985 cdm->matches[j].result.periph_result.unit_number =
1986 periph->unit_number;
1987 strncpy(cdm->matches[j].result.periph_result.periph_name,
1988 periph->periph_name, DEV_IDLEN);
1995 xptperiphlistmatch(struct ccb_dev_match *cdm)
1999 cdm->num_matches = 0;
2002 * At this point in the edt traversal function, we check the bus
2003 * list generation to make sure that no busses have been added or
2004 * removed since the user last sent a XPT_DEV_MATCH ccb through.
2005 * For the peripheral driver list traversal function, however, we
2006 * don't have to worry about new peripheral driver types coming or
2007 * going; they're in a linker set, and therefore can't change
2008 * without a recompile.
2011 if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR)
2012 && (cdm->pos.cookie.pdrv != NULL))
2013 ret = xptpdrvtraverse(
2014 (struct periph_driver **)cdm->pos.cookie.pdrv,
2015 xptplistpdrvfunc, cdm);
2017 ret = xptpdrvtraverse(NULL, xptplistpdrvfunc, cdm);
2020 * If we get back 0, that means that we had to stop before fully
2021 * traversing the peripheral driver tree. It also means that one of
2022 * the subroutines has set the status field to the proper value. If
2023 * we get back 1, we've fully traversed the EDT and copied out any
2027 cdm->status = CAM_DEV_MATCH_LAST;
2033 xptbustraverse(struct cam_eb *start_bus, xpt_busfunc_t *tr_func, void *arg)
2035 struct cam_eb *bus, *next_bus;
2041 for (bus = (start_bus ? start_bus : TAILQ_FIRST(&xsoftc.xpt_busses));
2048 * XXX The locking here is obviously very complex. We
2049 * should work to simplify it.
2052 CAM_SIM_LOCK(bus->sim);
2053 retval = tr_func(bus, arg);
2054 CAM_SIM_UNLOCK(bus->sim);
2057 next_bus = TAILQ_NEXT(bus, links);
2060 xpt_release_bus(bus);
2072 xpttargettraverse(struct cam_eb *bus, struct cam_et *start_target,
2073 xpt_targetfunc_t *tr_func, void *arg)
2075 struct cam_et *target, *next_target;
2078 mtx_assert(bus->sim->mtx, MA_OWNED);
2080 for (target = (start_target ? start_target :
2081 TAILQ_FIRST(&bus->et_entries));
2082 target != NULL; target = next_target) {
2086 retval = tr_func(target, arg);
2088 next_target = TAILQ_NEXT(target, links);
2090 xpt_release_target(target);
2100 xptdevicetraverse(struct cam_et *target, struct cam_ed *start_device,
2101 xpt_devicefunc_t *tr_func, void *arg)
2103 struct cam_ed *device, *next_device;
2106 mtx_assert(target->bus->sim->mtx, MA_OWNED);
2108 for (device = (start_device ? start_device :
2109 TAILQ_FIRST(&target->ed_entries));
2111 device = next_device) {
2114 * Hold a reference so the current device does not go away
2119 retval = tr_func(device, arg);
2122 * Grab our next pointer before we release the current
2125 next_device = TAILQ_NEXT(device, links);
2127 xpt_release_device(device);
2137 xptperiphtraverse(struct cam_ed *device, struct cam_periph *start_periph,
2138 xpt_periphfunc_t *tr_func, void *arg)
2140 struct cam_periph *periph, *next_periph;
2145 mtx_assert(device->sim->mtx, MA_OWNED);
2147 for (periph = (start_periph ? start_periph :
2148 SLIST_FIRST(&device->periphs));
2150 periph = next_periph) {
2154 * In this case, we want to show peripherals that have been
2155 * invalidated, but not peripherals that are scheduled to
2156 * be freed. So instead of calling cam_periph_acquire(),
2157 * which will fail if the periph has been invalidated, we
2158 * just check for the free flag here. If it is in the
2159 * process of being freed, we skip to the next periph.
2161 if (periph->flags & CAM_PERIPH_FREE) {
2162 next_periph = SLIST_NEXT(periph, periph_links);
2167 * Acquire a reference to this periph while we call the
2168 * traversal function, so it can't go away.
2172 retval = tr_func(periph, arg);
2175 * Grab the next peripheral before we release this one, so
2176 * our next pointer is still valid.
2178 next_periph = SLIST_NEXT(periph, periph_links);
2180 cam_periph_release_locked_buses(periph);
2194 xptpdrvtraverse(struct periph_driver **start_pdrv,
2195 xpt_pdrvfunc_t *tr_func, void *arg)
2197 struct periph_driver **pdrv;
2203 * We don't traverse the peripheral driver list like we do the
2204 * other lists, because it is a linker set, and therefore cannot be
2205 * changed during runtime. If the peripheral driver list is ever
2206 * re-done to be something other than a linker set (i.e. it can
2207 * change while the system is running), the list traversal should
2208 * be modified to work like the other traversal functions.
2210 for (pdrv = (start_pdrv ? start_pdrv : periph_drivers);
2211 *pdrv != NULL; pdrv++) {
2212 retval = tr_func(pdrv, arg);
2222 xptpdperiphtraverse(struct periph_driver **pdrv,
2223 struct cam_periph *start_periph,
2224 xpt_periphfunc_t *tr_func, void *arg)
2226 struct cam_periph *periph, *next_periph;
2227 struct cam_sim *sim;
2233 for (periph = (start_periph ? start_periph :
2234 TAILQ_FIRST(&(*pdrv)->units)); periph != NULL;
2235 periph = next_periph) {
2239 * In this case, we want to show peripherals that have been
2240 * invalidated, but not peripherals that are scheduled to
2241 * be freed. So instead of calling cam_periph_acquire(),
2242 * which will fail if the periph has been invalidated, we
2243 * just check for the free flag here. If it is free, we
2244 * skip to the next periph.
2246 if (periph->flags & CAM_PERIPH_FREE) {
2247 next_periph = TAILQ_NEXT(periph, unit_links);
2252 * Acquire a reference to this periph while we call the
2253 * traversal function, so it can't go away.
2260 retval = tr_func(periph, arg);
2263 * Grab the next peripheral before we release this one, so
2264 * our next pointer is still valid.
2266 next_periph = TAILQ_NEXT(periph, unit_links);
2268 cam_periph_release_locked_buses(periph);
2269 CAM_SIM_UNLOCK(sim);
2282 xptdefbusfunc(struct cam_eb *bus, void *arg)
2284 struct xpt_traverse_config *tr_config;
2286 tr_config = (struct xpt_traverse_config *)arg;
2288 if (tr_config->depth == XPT_DEPTH_BUS) {
2289 xpt_busfunc_t *tr_func;
2291 tr_func = (xpt_busfunc_t *)tr_config->tr_func;
2293 return(tr_func(bus, tr_config->tr_arg));
2295 return(xpttargettraverse(bus, NULL, xptdeftargetfunc, arg));
2299 xptdeftargetfunc(struct cam_et *target, void *arg)
2301 struct xpt_traverse_config *tr_config;
2303 tr_config = (struct xpt_traverse_config *)arg;
2305 if (tr_config->depth == XPT_DEPTH_TARGET) {
2306 xpt_targetfunc_t *tr_func;
2308 tr_func = (xpt_targetfunc_t *)tr_config->tr_func;
2310 return(tr_func(target, tr_config->tr_arg));
2312 return(xptdevicetraverse(target, NULL, xptdefdevicefunc, arg));
2316 xptdefdevicefunc(struct cam_ed *device, void *arg)
2318 struct xpt_traverse_config *tr_config;
2320 tr_config = (struct xpt_traverse_config *)arg;
2322 if (tr_config->depth == XPT_DEPTH_DEVICE) {
2323 xpt_devicefunc_t *tr_func;
2325 tr_func = (xpt_devicefunc_t *)tr_config->tr_func;
2327 return(tr_func(device, tr_config->tr_arg));
2329 return(xptperiphtraverse(device, NULL, xptdefperiphfunc, arg));
2333 xptdefperiphfunc(struct cam_periph *periph, void *arg)
2335 struct xpt_traverse_config *tr_config;
2336 xpt_periphfunc_t *tr_func;
2338 tr_config = (struct xpt_traverse_config *)arg;
2340 tr_func = (xpt_periphfunc_t *)tr_config->tr_func;
2343 * Unlike the other default functions, we don't check for depth
2344 * here. The peripheral driver level is the last level in the EDT,
2345 * so if we're here, we should execute the function in question.
2347 return(tr_func(periph, tr_config->tr_arg));
2351 * Execute the given function for every bus in the EDT.
2354 xpt_for_all_busses(xpt_busfunc_t *tr_func, void *arg)
2356 struct xpt_traverse_config tr_config;
2358 tr_config.depth = XPT_DEPTH_BUS;
2359 tr_config.tr_func = tr_func;
2360 tr_config.tr_arg = arg;
2362 return(xptbustraverse(NULL, xptdefbusfunc, &tr_config));
2366 * Execute the given function for every device in the EDT.
2369 xpt_for_all_devices(xpt_devicefunc_t *tr_func, void *arg)
2371 struct xpt_traverse_config tr_config;
2373 tr_config.depth = XPT_DEPTH_DEVICE;
2374 tr_config.tr_func = tr_func;
2375 tr_config.tr_arg = arg;
2377 return(xptbustraverse(NULL, xptdefbusfunc, &tr_config));
2381 xptsetasyncfunc(struct cam_ed *device, void *arg)
2383 struct cam_path path;
2384 struct ccb_getdev cgd;
2385 struct ccb_setasync *csa = (struct ccb_setasync *)arg;
2388 * Don't report unconfigured devices (Wildcard devs,
2389 * devices only for target mode, device instances
2390 * that have been invalidated but are waiting for
2391 * their last reference count to be released).
2393 if ((device->flags & CAM_DEV_UNCONFIGURED) != 0)
2396 xpt_compile_path(&path,
2398 device->target->bus->path_id,
2399 device->target->target_id,
2401 xpt_setup_ccb(&cgd.ccb_h, &path, CAM_PRIORITY_NORMAL);
2402 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
2403 xpt_action((union ccb *)&cgd);
2404 csa->callback(csa->callback_arg,
2407 xpt_release_path(&path);
2413 xptsetasyncbusfunc(struct cam_eb *bus, void *arg)
2415 struct cam_path path;
2416 struct ccb_pathinq cpi;
2417 struct ccb_setasync *csa = (struct ccb_setasync *)arg;
2419 xpt_compile_path(&path, /*periph*/NULL,
2421 CAM_TARGET_WILDCARD,
2423 xpt_setup_ccb(&cpi.ccb_h, &path, CAM_PRIORITY_NORMAL);
2424 cpi.ccb_h.func_code = XPT_PATH_INQ;
2425 xpt_action((union ccb *)&cpi);
2426 csa->callback(csa->callback_arg,
2429 xpt_release_path(&path);
2435 xpt_action(union ccb *start_ccb)
2438 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("xpt_action\n"));
2440 start_ccb->ccb_h.status = CAM_REQ_INPROG;
2441 (*(start_ccb->ccb_h.path->bus->xport->action))(start_ccb);
2445 xpt_action_default(union ccb *start_ccb)
2447 struct cam_path *path;
2449 path = start_ccb->ccb_h.path;
2450 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_action_default\n"));
2452 switch (start_ccb->ccb_h.func_code) {
2455 struct cam_ed *device;
2458 * For the sake of compatibility with SCSI-1
2459 * devices that may not understand the identify
2460 * message, we include lun information in the
2461 * second byte of all commands. SCSI-1 specifies
2462 * that luns are a 3 bit value and reserves only 3
2463 * bits for lun information in the CDB. Later
2464 * revisions of the SCSI spec allow for more than 8
2465 * luns, but have deprecated lun information in the
2466 * CDB. So, if the lun won't fit, we must omit.
2468 * Also be aware that during initial probing for devices,
2469 * the inquiry information is unknown but initialized to 0.
2470 * This means that this code will be exercised while probing
2471 * devices with an ANSI revision greater than 2.
2473 device = path->device;
2474 if (device->protocol_version <= SCSI_REV_2
2475 && start_ccb->ccb_h.target_lun < 8
2476 && (start_ccb->ccb_h.flags & CAM_CDB_POINTER) == 0) {
2478 start_ccb->csio.cdb_io.cdb_bytes[1] |=
2479 start_ccb->ccb_h.target_lun << 5;
2481 start_ccb->csio.scsi_status = SCSI_STATUS_OK;
2485 case XPT_CONT_TARGET_IO:
2486 start_ccb->csio.sense_resid = 0;
2487 start_ccb->csio.resid = 0;
2490 if (start_ccb->ccb_h.func_code == XPT_ATA_IO)
2491 start_ccb->ataio.resid = 0;
2496 cam_ccbq_insert_ccb(&path->device->ccbq, start_ccb);
2497 if (xpt_schedule_devq(path->bus->sim->devq, path->device))
2498 xpt_run_devq(path->bus->sim->devq);
2500 case XPT_CALC_GEOMETRY:
2502 struct cam_sim *sim;
2504 /* Filter out garbage */
2505 if (start_ccb->ccg.block_size == 0
2506 || start_ccb->ccg.volume_size == 0) {
2507 start_ccb->ccg.cylinders = 0;
2508 start_ccb->ccg.heads = 0;
2509 start_ccb->ccg.secs_per_track = 0;
2510 start_ccb->ccb_h.status = CAM_REQ_CMP;
2513 #if defined(PC98) || defined(__sparc64__)
2515 * In a PC-98 system, geometry translation depens on
2516 * the "real" device geometry obtained from mode page 4.
2517 * SCSI geometry translation is performed in the
2518 * initialization routine of the SCSI BIOS and the result
2519 * stored in host memory. If the translation is available
2520 * in host memory, use it. If not, rely on the default
2521 * translation the device driver performs.
2522 * For sparc64, we may need adjust the geometry of large
2523 * disks in order to fit the limitations of the 16-bit
2524 * fields of the VTOC8 disk label.
2526 if (scsi_da_bios_params(&start_ccb->ccg) != 0) {
2527 start_ccb->ccb_h.status = CAM_REQ_CMP;
2531 sim = path->bus->sim;
2532 (*(sim->sim_action))(sim, start_ccb);
2537 union ccb* abort_ccb;
2539 abort_ccb = start_ccb->cab.abort_ccb;
2540 if (XPT_FC_IS_DEV_QUEUED(abort_ccb)) {
2542 if (abort_ccb->ccb_h.pinfo.index >= 0) {
2543 struct cam_ccbq *ccbq;
2544 struct cam_ed *device;
2546 device = abort_ccb->ccb_h.path->device;
2547 ccbq = &device->ccbq;
2548 cam_ccbq_remove_ccb(ccbq, abort_ccb);
2549 abort_ccb->ccb_h.status =
2550 CAM_REQ_ABORTED|CAM_DEV_QFRZN;
2551 xpt_freeze_devq(abort_ccb->ccb_h.path, 1);
2552 xpt_done(abort_ccb);
2553 start_ccb->ccb_h.status = CAM_REQ_CMP;
2556 if (abort_ccb->ccb_h.pinfo.index == CAM_UNQUEUED_INDEX
2557 && (abort_ccb->ccb_h.status & CAM_SIM_QUEUED) == 0) {
2559 * We've caught this ccb en route to
2560 * the SIM. Flag it for abort and the
2561 * SIM will do so just before starting
2562 * real work on the CCB.
2564 abort_ccb->ccb_h.status =
2565 CAM_REQ_ABORTED|CAM_DEV_QFRZN;
2566 xpt_freeze_devq(abort_ccb->ccb_h.path, 1);
2567 start_ccb->ccb_h.status = CAM_REQ_CMP;
2571 if (XPT_FC_IS_QUEUED(abort_ccb)
2572 && (abort_ccb->ccb_h.pinfo.index == CAM_DONEQ_INDEX)) {
2574 * It's already completed but waiting
2575 * for our SWI to get to it.
2577 start_ccb->ccb_h.status = CAM_UA_ABORT;
2581 * If we weren't able to take care of the abort request
2582 * in the XPT, pass the request down to the SIM for processing.
2586 case XPT_ACCEPT_TARGET_IO:
2588 case XPT_IMMED_NOTIFY:
2589 case XPT_NOTIFY_ACK:
2591 case XPT_IMMEDIATE_NOTIFY:
2592 case XPT_NOTIFY_ACKNOWLEDGE:
2593 case XPT_GET_SIM_KNOB:
2594 case XPT_SET_SIM_KNOB:
2596 struct cam_sim *sim;
2598 sim = path->bus->sim;
2599 (*(sim->sim_action))(sim, start_ccb);
2604 struct cam_sim *sim;
2606 sim = path->bus->sim;
2607 (*(sim->sim_action))(sim, start_ccb);
2610 case XPT_PATH_STATS:
2611 start_ccb->cpis.last_reset = path->bus->last_reset;
2612 start_ccb->ccb_h.status = CAM_REQ_CMP;
2619 if ((dev->flags & CAM_DEV_UNCONFIGURED) != 0) {
2620 start_ccb->ccb_h.status = CAM_DEV_NOT_THERE;
2622 struct ccb_getdev *cgd;
2624 cgd = &start_ccb->cgd;
2625 cgd->protocol = dev->protocol;
2626 cgd->inq_data = dev->inq_data;
2627 cgd->ident_data = dev->ident_data;
2628 cgd->inq_flags = dev->inq_flags;
2629 cgd->ccb_h.status = CAM_REQ_CMP;
2630 cgd->serial_num_len = dev->serial_num_len;
2631 if ((dev->serial_num_len > 0)
2632 && (dev->serial_num != NULL))
2633 bcopy(dev->serial_num, cgd->serial_num,
2634 dev->serial_num_len);
2638 case XPT_GDEV_STATS:
2643 if ((dev->flags & CAM_DEV_UNCONFIGURED) != 0) {
2644 start_ccb->ccb_h.status = CAM_DEV_NOT_THERE;
2646 struct ccb_getdevstats *cgds;
2650 cgds = &start_ccb->cgds;
2653 cgds->dev_openings = dev->ccbq.dev_openings;
2654 cgds->dev_active = dev->ccbq.dev_active;
2655 cgds->devq_openings = dev->ccbq.devq_openings;
2656 cgds->devq_queued = cam_ccbq_pending_ccb_count(&dev->ccbq);
2657 cgds->held = dev->ccbq.held;
2658 cgds->last_reset = tar->last_reset;
2659 cgds->maxtags = dev->maxtags;
2660 cgds->mintags = dev->mintags;
2661 if (timevalcmp(&tar->last_reset, &bus->last_reset, <))
2662 cgds->last_reset = bus->last_reset;
2663 cgds->ccb_h.status = CAM_REQ_CMP;
2669 struct cam_periph *nperiph;
2670 struct periph_list *periph_head;
2671 struct ccb_getdevlist *cgdl;
2673 struct cam_ed *device;
2680 * Don't want anyone mucking with our data.
2682 device = path->device;
2683 periph_head = &device->periphs;
2684 cgdl = &start_ccb->cgdl;
2687 * Check and see if the list has changed since the user
2688 * last requested a list member. If so, tell them that the
2689 * list has changed, and therefore they need to start over
2690 * from the beginning.
2692 if ((cgdl->index != 0) &&
2693 (cgdl->generation != device->generation)) {
2694 cgdl->status = CAM_GDEVLIST_LIST_CHANGED;
2699 * Traverse the list of peripherals and attempt to find
2700 * the requested peripheral.
2702 for (nperiph = SLIST_FIRST(periph_head), i = 0;
2703 (nperiph != NULL) && (i <= cgdl->index);
2704 nperiph = SLIST_NEXT(nperiph, periph_links), i++) {
2705 if (i == cgdl->index) {
2706 strncpy(cgdl->periph_name,
2707 nperiph->periph_name,
2709 cgdl->unit_number = nperiph->unit_number;
2714 cgdl->status = CAM_GDEVLIST_ERROR;
2718 if (nperiph == NULL)
2719 cgdl->status = CAM_GDEVLIST_LAST_DEVICE;
2721 cgdl->status = CAM_GDEVLIST_MORE_DEVS;
2724 cgdl->generation = device->generation;
2726 cgdl->ccb_h.status = CAM_REQ_CMP;
2731 dev_pos_type position_type;
2732 struct ccb_dev_match *cdm;
2734 cdm = &start_ccb->cdm;
2737 * There are two ways of getting at information in the EDT.
2738 * The first way is via the primary EDT tree. It starts
2739 * with a list of busses, then a list of targets on a bus,
2740 * then devices/luns on a target, and then peripherals on a
2741 * device/lun. The "other" way is by the peripheral driver
2742 * lists. The peripheral driver lists are organized by
2743 * peripheral driver. (obviously) So it makes sense to
2744 * use the peripheral driver list if the user is looking
2745 * for something like "da1", or all "da" devices. If the
2746 * user is looking for something on a particular bus/target
2747 * or lun, it's generally better to go through the EDT tree.
2750 if (cdm->pos.position_type != CAM_DEV_POS_NONE)
2751 position_type = cdm->pos.position_type;
2755 position_type = CAM_DEV_POS_NONE;
2757 for (i = 0; i < cdm->num_patterns; i++) {
2758 if ((cdm->patterns[i].type == DEV_MATCH_BUS)
2759 ||(cdm->patterns[i].type == DEV_MATCH_DEVICE)){
2760 position_type = CAM_DEV_POS_EDT;
2765 if (cdm->num_patterns == 0)
2766 position_type = CAM_DEV_POS_EDT;
2767 else if (position_type == CAM_DEV_POS_NONE)
2768 position_type = CAM_DEV_POS_PDRV;
2772 * Note that we drop the SIM lock here, because the EDT
2773 * traversal code needs to do its own locking.
2775 CAM_SIM_UNLOCK(xpt_path_sim(cdm->ccb_h.path));
2776 switch(position_type & CAM_DEV_POS_TYPEMASK) {
2777 case CAM_DEV_POS_EDT:
2780 case CAM_DEV_POS_PDRV:
2781 xptperiphlistmatch(cdm);
2784 cdm->status = CAM_DEV_MATCH_ERROR;
2787 CAM_SIM_LOCK(xpt_path_sim(cdm->ccb_h.path));
2789 if (cdm->status == CAM_DEV_MATCH_ERROR)
2790 start_ccb->ccb_h.status = CAM_REQ_CMP_ERR;
2792 start_ccb->ccb_h.status = CAM_REQ_CMP;
2798 struct ccb_setasync *csa;
2799 struct async_node *cur_entry;
2800 struct async_list *async_head;
2803 csa = &start_ccb->csa;
2804 added = csa->event_enable;
2805 async_head = &path->device->asyncs;
2808 * If there is already an entry for us, simply
2811 cur_entry = SLIST_FIRST(async_head);
2812 while (cur_entry != NULL) {
2813 if ((cur_entry->callback_arg == csa->callback_arg)
2814 && (cur_entry->callback == csa->callback))
2816 cur_entry = SLIST_NEXT(cur_entry, links);
2819 if (cur_entry != NULL) {
2821 * If the request has no flags set,
2824 added &= ~cur_entry->event_enable;
2825 if (csa->event_enable == 0) {
2826 SLIST_REMOVE(async_head, cur_entry,
2828 xpt_release_device(path->device);
2829 free(cur_entry, M_CAMXPT);
2831 cur_entry->event_enable = csa->event_enable;
2833 csa->event_enable = added;
2835 cur_entry = malloc(sizeof(*cur_entry), M_CAMXPT,
2837 if (cur_entry == NULL) {
2838 csa->ccb_h.status = CAM_RESRC_UNAVAIL;
2841 cur_entry->event_enable = csa->event_enable;
2842 cur_entry->callback_arg = csa->callback_arg;
2843 cur_entry->callback = csa->callback;
2844 SLIST_INSERT_HEAD(async_head, cur_entry, links);
2845 xpt_acquire_device(path->device);
2847 start_ccb->ccb_h.status = CAM_REQ_CMP;
2852 struct ccb_relsim *crs;
2855 crs = &start_ccb->crs;
2859 crs->ccb_h.status = CAM_DEV_NOT_THERE;
2863 if ((crs->release_flags & RELSIM_ADJUST_OPENINGS) != 0) {
2865 /* Don't ever go below one opening */
2866 if (crs->openings > 0) {
2867 xpt_dev_ccbq_resize(path, crs->openings);
2870 "number of openings is now %d\n",
2876 if ((crs->release_flags & RELSIM_RELEASE_AFTER_TIMEOUT) != 0) {
2878 if ((dev->flags & CAM_DEV_REL_TIMEOUT_PENDING) != 0) {
2881 * Just extend the old timeout and decrement
2882 * the freeze count so that a single timeout
2883 * is sufficient for releasing the queue.
2885 start_ccb->ccb_h.flags &= ~CAM_DEV_QFREEZE;
2886 callout_stop(&dev->callout);
2889 start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
2892 callout_reset(&dev->callout,
2893 (crs->release_timeout * hz) / 1000,
2894 xpt_release_devq_timeout, dev);
2896 dev->flags |= CAM_DEV_REL_TIMEOUT_PENDING;
2900 if ((crs->release_flags & RELSIM_RELEASE_AFTER_CMDCMPLT) != 0) {
2902 if ((dev->flags & CAM_DEV_REL_ON_COMPLETE) != 0) {
2904 * Decrement the freeze count so that a single
2905 * completion is still sufficient to unfreeze
2908 start_ccb->ccb_h.flags &= ~CAM_DEV_QFREEZE;
2911 dev->flags |= CAM_DEV_REL_ON_COMPLETE;
2912 start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
2916 if ((crs->release_flags & RELSIM_RELEASE_AFTER_QEMPTY) != 0) {
2918 if ((dev->flags & CAM_DEV_REL_ON_QUEUE_EMPTY) != 0
2919 || (dev->ccbq.dev_active == 0)) {
2921 start_ccb->ccb_h.flags &= ~CAM_DEV_QFREEZE;
2924 dev->flags |= CAM_DEV_REL_ON_QUEUE_EMPTY;
2925 start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
2929 if ((start_ccb->ccb_h.flags & CAM_DEV_QFREEZE) == 0)
2930 xpt_release_devq(path, /*count*/1, /*run_queue*/TRUE);
2931 start_ccb->crs.qfrozen_cnt = dev->ccbq.queue.qfrozen_cnt;
2932 start_ccb->ccb_h.status = CAM_REQ_CMP;
2936 struct cam_path *oldpath;
2937 struct cam_sim *oldsim;
2939 /* Check that all request bits are supported. */
2940 if (start_ccb->cdbg.flags & ~(CAM_DEBUG_COMPILE)) {
2941 start_ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
2945 cam_dflags = CAM_DEBUG_NONE;
2946 if (cam_dpath != NULL) {
2947 /* To release the old path we must hold proper lock. */
2948 oldpath = cam_dpath;
2950 oldsim = xpt_path_sim(oldpath);
2951 CAM_SIM_UNLOCK(xpt_path_sim(start_ccb->ccb_h.path));
2952 CAM_SIM_LOCK(oldsim);
2953 xpt_free_path(oldpath);
2954 CAM_SIM_UNLOCK(oldsim);
2955 CAM_SIM_LOCK(xpt_path_sim(start_ccb->ccb_h.path));
2957 if (start_ccb->cdbg.flags != CAM_DEBUG_NONE) {
2958 if (xpt_create_path(&cam_dpath, NULL,
2959 start_ccb->ccb_h.path_id,
2960 start_ccb->ccb_h.target_id,
2961 start_ccb->ccb_h.target_lun) !=
2963 start_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
2965 cam_dflags = start_ccb->cdbg.flags;
2966 start_ccb->ccb_h.status = CAM_REQ_CMP;
2967 xpt_print(cam_dpath, "debugging flags now %x\n",
2971 start_ccb->ccb_h.status = CAM_REQ_CMP;
2975 if ((start_ccb->ccb_h.flags & CAM_DEV_QFREEZE) != 0)
2976 xpt_freeze_devq(path, 1);
2977 start_ccb->ccb_h.status = CAM_REQ_CMP;
2984 printf("%s: CCB type %#x not supported\n", __func__,
2985 start_ccb->ccb_h.func_code);
2986 start_ccb->ccb_h.status = CAM_PROVIDE_FAIL;
2987 if (start_ccb->ccb_h.func_code & XPT_FC_DEV_QUEUED) {
2988 xpt_done(start_ccb);
2995 xpt_polled_action(union ccb *start_ccb)
2998 struct cam_sim *sim;
2999 struct cam_devq *devq;
3003 timeout = start_ccb->ccb_h.timeout * 10;
3004 sim = start_ccb->ccb_h.path->bus->sim;
3006 dev = start_ccb->ccb_h.path->device;
3008 mtx_assert(sim->mtx, MA_OWNED);
3010 /* Don't use ISR for this SIM while polling. */
3011 sim->flags |= CAM_SIM_POLLED;
3014 * Steal an opening so that no other queued requests
3015 * can get it before us while we simulate interrupts.
3017 dev->ccbq.devq_openings--;
3018 dev->ccbq.dev_openings--;
3020 while(((devq != NULL && devq->send_openings <= 0) ||
3021 dev->ccbq.dev_openings < 0) && (--timeout > 0)) {
3023 (*(sim->sim_poll))(sim);
3024 camisr_runqueue(sim);
3027 dev->ccbq.devq_openings++;
3028 dev->ccbq.dev_openings++;
3031 xpt_action(start_ccb);
3032 while(--timeout > 0) {
3033 (*(sim->sim_poll))(sim);
3034 camisr_runqueue(sim);
3035 if ((start_ccb->ccb_h.status & CAM_STATUS_MASK)
3042 * XXX Is it worth adding a sim_timeout entry
3043 * point so we can attempt recovery? If
3044 * this is only used for dumps, I don't think
3047 start_ccb->ccb_h.status = CAM_CMD_TIMEOUT;
3050 start_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
3053 /* We will use CAM ISR for this SIM again. */
3054 sim->flags &= ~CAM_SIM_POLLED;
3058 * Schedule a peripheral driver to receive a ccb when it's
3059 * target device has space for more transactions.
3062 xpt_schedule(struct cam_periph *perph, u_int32_t new_priority)
3064 struct cam_ed *device;
3067 mtx_assert(perph->sim->mtx, MA_OWNED);
3069 CAM_DEBUG(perph->path, CAM_DEBUG_TRACE, ("xpt_schedule\n"));
3070 device = perph->path->device;
3071 if (periph_is_queued(perph)) {
3072 /* Simply reorder based on new priority */
3073 CAM_DEBUG(perph->path, CAM_DEBUG_SUBTRACE,
3074 (" change priority to %d\n", new_priority));
3075 if (new_priority < perph->pinfo.priority) {
3076 camq_change_priority(&device->drvq,
3082 /* New entry on the queue */
3083 CAM_DEBUG(perph->path, CAM_DEBUG_SUBTRACE,
3084 (" added periph to queue\n"));
3085 perph->pinfo.priority = new_priority;
3086 perph->pinfo.generation = ++device->drvq.generation;
3087 camq_insert(&device->drvq, &perph->pinfo);
3091 CAM_DEBUG(perph->path, CAM_DEBUG_SUBTRACE,
3092 (" calling xpt_run_dev_allocq\n"));
3093 xpt_run_dev_allocq(device);
3099 * Schedule a device to run on a given queue.
3100 * If the device was inserted as a new entry on the queue,
3101 * return 1 meaning the device queue should be run. If we
3102 * were already queued, implying someone else has already
3103 * started the queue, return 0 so the caller doesn't attempt
3107 xpt_schedule_dev(struct camq *queue, cam_pinfo *pinfo,
3108 u_int32_t new_priority)
3111 u_int32_t old_priority;
3113 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_schedule_dev\n"));
3115 old_priority = pinfo->priority;
3118 * Are we already queued?
3120 if (pinfo->index != CAM_UNQUEUED_INDEX) {
3121 /* Simply reorder based on new priority */
3122 if (new_priority < old_priority) {
3123 camq_change_priority(queue, pinfo->index,
3125 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3126 ("changed priority to %d\n",
3132 /* New entry on the queue */
3133 if (new_priority < old_priority)
3134 pinfo->priority = new_priority;
3136 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3137 ("Inserting onto queue\n"));
3138 pinfo->generation = ++queue->generation;
3139 camq_insert(queue, pinfo);
3146 xpt_run_dev_allocq(struct cam_ed *device)
3150 if (device->ccbq.devq_allocating)
3152 device->ccbq.devq_allocating = 1;
3153 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_run_dev_allocq(%p)\n", device));
3154 drvq = &device->drvq;
3155 while ((drvq->entries > 0) &&
3156 (device->ccbq.devq_openings > 0 ||
3157 CAMQ_GET_PRIO(drvq) <= CAM_PRIORITY_OOB) &&
3158 (device->ccbq.queue.qfrozen_cnt == 0)) {
3159 union ccb *work_ccb;
3160 struct cam_periph *drv;
3162 KASSERT(drvq->entries > 0, ("xpt_run_dev_allocq: "
3163 "Device on queue without any work to do"));
3164 if ((work_ccb = xpt_get_ccb(device)) != NULL) {
3165 drv = (struct cam_periph*)camq_remove(drvq, CAMQ_HEAD);
3166 xpt_setup_ccb(&work_ccb->ccb_h, drv->path,
3167 drv->pinfo.priority);
3168 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3169 ("calling periph start\n"));
3170 drv->periph_start(drv, work_ccb);
3173 * Malloc failure in alloc_ccb
3176 * XXX add us to a list to be run from free_ccb
3177 * if we don't have any ccbs active on this
3178 * device queue otherwise we may never get run
3184 device->ccbq.devq_allocating = 0;
3188 xpt_run_devq(struct cam_devq *devq)
3190 char cdb_str[(SCSI_MAX_CDBLEN * 3) + 1];
3192 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_run_devq\n"));
3194 devq->send_queue.qfrozen_cnt++;
3195 while ((devq->send_queue.entries > 0)
3196 && (devq->send_openings > 0)
3197 && (devq->send_queue.qfrozen_cnt <= 1)) {
3198 struct cam_ed_qinfo *qinfo;
3199 struct cam_ed *device;
3200 union ccb *work_ccb;
3201 struct cam_sim *sim;
3203 qinfo = (struct cam_ed_qinfo *)camq_remove(&devq->send_queue,
3205 device = qinfo->device;
3206 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3207 ("running device %p\n", device));
3209 work_ccb = cam_ccbq_peek_ccb(&device->ccbq, CAMQ_HEAD);
3210 if (work_ccb == NULL) {
3211 printf("device on run queue with no ccbs???\n");
3215 if ((work_ccb->ccb_h.flags & CAM_HIGH_POWER) != 0) {
3217 mtx_lock(&xsoftc.xpt_lock);
3218 if (xsoftc.num_highpower <= 0) {
3220 * We got a high power command, but we
3221 * don't have any available slots. Freeze
3222 * the device queue until we have a slot
3225 xpt_freeze_devq(work_ccb->ccb_h.path, 1);
3226 STAILQ_INSERT_TAIL(&xsoftc.highpowerq,
3227 work_ccb->ccb_h.path->device,
3230 mtx_unlock(&xsoftc.xpt_lock);
3234 * Consume a high power slot while
3237 xsoftc.num_highpower--;
3239 mtx_unlock(&xsoftc.xpt_lock);
3241 cam_ccbq_remove_ccb(&device->ccbq, work_ccb);
3242 cam_ccbq_send_ccb(&device->ccbq, work_ccb);
3244 devq->send_openings--;
3245 devq->send_active++;
3247 xpt_schedule_devq(devq, device);
3249 if ((work_ccb->ccb_h.flags & CAM_DEV_QFREEZE) != 0) {
3251 * The client wants to freeze the queue
3252 * after this CCB is sent.
3254 xpt_freeze_devq(work_ccb->ccb_h.path, 1);
3257 /* In Target mode, the peripheral driver knows best... */
3258 if (work_ccb->ccb_h.func_code == XPT_SCSI_IO) {
3259 if ((device->inq_flags & SID_CmdQue) != 0
3260 && work_ccb->csio.tag_action != CAM_TAG_ACTION_NONE)
3261 work_ccb->ccb_h.flags |= CAM_TAG_ACTION_VALID;
3264 * Clear this in case of a retried CCB that
3265 * failed due to a rejected tag.
3267 work_ccb->ccb_h.flags &= ~CAM_TAG_ACTION_VALID;
3270 switch (work_ccb->ccb_h.func_code) {
3272 CAM_DEBUG(work_ccb->ccb_h.path,
3273 CAM_DEBUG_CDB,("%s. CDB: %s\n",
3274 scsi_op_desc(work_ccb->csio.cdb_io.cdb_bytes[0],
3276 scsi_cdb_string(work_ccb->csio.cdb_io.cdb_bytes,
3277 cdb_str, sizeof(cdb_str))));
3280 CAM_DEBUG(work_ccb->ccb_h.path,
3281 CAM_DEBUG_CDB,("%s. ACB: %s\n",
3282 ata_op_string(&work_ccb->ataio.cmd),
3283 ata_cmd_string(&work_ccb->ataio.cmd,
3284 cdb_str, sizeof(cdb_str))));
3291 * Device queues can be shared among multiple sim instances
3292 * that reside on different busses. Use the SIM in the queue
3293 * CCB's path, rather than the one in the bus that was passed
3294 * into this function.
3296 sim = work_ccb->ccb_h.path->bus->sim;
3297 (*(sim->sim_action))(sim, work_ccb);
3299 devq->send_queue.qfrozen_cnt--;
3303 * This function merges stuff from the slave ccb into the master ccb, while
3304 * keeping important fields in the master ccb constant.
3307 xpt_merge_ccb(union ccb *master_ccb, union ccb *slave_ccb)
3311 * Pull fields that are valid for peripheral drivers to set
3312 * into the master CCB along with the CCB "payload".
3314 master_ccb->ccb_h.retry_count = slave_ccb->ccb_h.retry_count;
3315 master_ccb->ccb_h.func_code = slave_ccb->ccb_h.func_code;
3316 master_ccb->ccb_h.timeout = slave_ccb->ccb_h.timeout;
3317 master_ccb->ccb_h.flags = slave_ccb->ccb_h.flags;
3318 bcopy(&(&slave_ccb->ccb_h)[1], &(&master_ccb->ccb_h)[1],
3319 sizeof(union ccb) - sizeof(struct ccb_hdr));
3323 xpt_setup_ccb(struct ccb_hdr *ccb_h, struct cam_path *path, u_int32_t priority)
3326 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_setup_ccb\n"));
3327 ccb_h->pinfo.priority = priority;
3329 ccb_h->path_id = path->bus->path_id;
3331 ccb_h->target_id = path->target->target_id;
3333 ccb_h->target_id = CAM_TARGET_WILDCARD;
3335 ccb_h->target_lun = path->device->lun_id;
3336 ccb_h->pinfo.generation = ++path->device->ccbq.queue.generation;
3338 ccb_h->target_lun = CAM_TARGET_WILDCARD;
3340 ccb_h->pinfo.index = CAM_UNQUEUED_INDEX;
3344 /* Path manipulation functions */
3346 xpt_create_path(struct cam_path **new_path_ptr, struct cam_periph *perph,
3347 path_id_t path_id, target_id_t target_id, lun_id_t lun_id)
3349 struct cam_path *path;
3352 path = (struct cam_path *)malloc(sizeof(*path), M_CAMPATH, M_NOWAIT);
3355 status = CAM_RESRC_UNAVAIL;
3358 status = xpt_compile_path(path, perph, path_id, target_id, lun_id);
3359 if (status != CAM_REQ_CMP) {
3360 free(path, M_CAMPATH);
3363 *new_path_ptr = path;
3368 xpt_create_path_unlocked(struct cam_path **new_path_ptr,
3369 struct cam_periph *periph, path_id_t path_id,
3370 target_id_t target_id, lun_id_t lun_id)
3372 struct cam_path *path;
3373 struct cam_eb *bus = NULL;
3376 path = (struct cam_path *)malloc(sizeof(*path), M_CAMPATH, M_WAITOK);
3378 bus = xpt_find_bus(path_id);
3380 CAM_SIM_LOCK(bus->sim);
3381 status = xpt_compile_path(path, periph, path_id, target_id, lun_id);
3383 CAM_SIM_UNLOCK(bus->sim);
3384 xpt_release_bus(bus);
3386 if (status != CAM_REQ_CMP) {
3387 free(path, M_CAMPATH);
3390 *new_path_ptr = path;
3395 xpt_compile_path(struct cam_path *new_path, struct cam_periph *perph,
3396 path_id_t path_id, target_id_t target_id, lun_id_t lun_id)
3399 struct cam_et *target;
3400 struct cam_ed *device;
3403 status = CAM_REQ_CMP; /* Completed without error */
3404 target = NULL; /* Wildcarded */
3405 device = NULL; /* Wildcarded */
3408 * We will potentially modify the EDT, so block interrupts
3409 * that may attempt to create cam paths.
3411 bus = xpt_find_bus(path_id);
3413 status = CAM_PATH_INVALID;
3415 target = xpt_find_target(bus, target_id);
3416 if (target == NULL) {
3418 struct cam_et *new_target;
3420 new_target = xpt_alloc_target(bus, target_id);
3421 if (new_target == NULL) {
3422 status = CAM_RESRC_UNAVAIL;
3424 target = new_target;
3427 if (target != NULL) {
3428 device = xpt_find_device(target, lun_id);
3429 if (device == NULL) {
3431 struct cam_ed *new_device;
3434 (*(bus->xport->alloc_device))(bus,
3437 if (new_device == NULL) {
3438 status = CAM_RESRC_UNAVAIL;
3440 device = new_device;
3447 * Only touch the user's data if we are successful.
3449 if (status == CAM_REQ_CMP) {
3450 new_path->periph = perph;
3451 new_path->bus = bus;
3452 new_path->target = target;
3453 new_path->device = device;
3454 CAM_DEBUG(new_path, CAM_DEBUG_TRACE, ("xpt_compile_path\n"));
3457 xpt_release_device(device);
3459 xpt_release_target(target);
3461 xpt_release_bus(bus);
3467 xpt_release_path(struct cam_path *path)
3469 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_release_path\n"));
3470 if (path->device != NULL) {
3471 xpt_release_device(path->device);
3472 path->device = NULL;
3474 if (path->target != NULL) {
3475 xpt_release_target(path->target);
3476 path->target = NULL;
3478 if (path->bus != NULL) {
3479 xpt_release_bus(path->bus);
3485 xpt_free_path(struct cam_path *path)
3488 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_free_path\n"));
3489 xpt_release_path(path);
3490 free(path, M_CAMPATH);
3494 xpt_path_counts(struct cam_path *path, uint32_t *bus_ref,
3495 uint32_t *periph_ref, uint32_t *target_ref, uint32_t *device_ref)
3501 *bus_ref = path->bus->refcount;
3507 *periph_ref = path->periph->refcount;
3514 *target_ref = path->target->refcount;
3520 *device_ref = path->device->refcount;
3527 * Return -1 for failure, 0 for exact match, 1 for match with wildcards
3528 * in path1, 2 for match with wildcards in path2.
3531 xpt_path_comp(struct cam_path *path1, struct cam_path *path2)
3535 if (path1->bus != path2->bus) {
3536 if (path1->bus->path_id == CAM_BUS_WILDCARD)
3538 else if (path2->bus->path_id == CAM_BUS_WILDCARD)
3543 if (path1->target != path2->target) {
3544 if (path1->target->target_id == CAM_TARGET_WILDCARD) {
3547 } else if (path2->target->target_id == CAM_TARGET_WILDCARD)
3552 if (path1->device != path2->device) {
3553 if (path1->device->lun_id == CAM_LUN_WILDCARD) {
3556 } else if (path2->device->lun_id == CAM_LUN_WILDCARD)
3565 xpt_path_comp_dev(struct cam_path *path, struct cam_ed *dev)
3569 if (path->bus != dev->target->bus) {
3570 if (path->bus->path_id == CAM_BUS_WILDCARD)
3572 else if (dev->target->bus->path_id == CAM_BUS_WILDCARD)
3577 if (path->target != dev->target) {
3578 if (path->target->target_id == CAM_TARGET_WILDCARD) {
3581 } else if (dev->target->target_id == CAM_TARGET_WILDCARD)
3586 if (path->device != dev) {
3587 if (path->device->lun_id == CAM_LUN_WILDCARD) {
3590 } else if (dev->lun_id == CAM_LUN_WILDCARD)
3599 xpt_print_path(struct cam_path *path)
3603 printf("(nopath): ");
3605 if (path->periph != NULL)
3606 printf("(%s%d:", path->periph->periph_name,
3607 path->periph->unit_number);
3609 printf("(noperiph:");
3611 if (path->bus != NULL)
3612 printf("%s%d:%d:", path->bus->sim->sim_name,
3613 path->bus->sim->unit_number,
3614 path->bus->sim->bus_id);
3618 if (path->target != NULL)
3619 printf("%d:", path->target->target_id);
3623 if (path->device != NULL)
3624 printf("%d): ", path->device->lun_id);
3631 xpt_print_device(struct cam_ed *device)
3635 printf("(nopath): ");
3637 printf("(noperiph:%s%d:%d:%d:%d): ", device->sim->sim_name,
3638 device->sim->unit_number,
3639 device->sim->bus_id,
3640 device->target->target_id,
3646 xpt_print(struct cam_path *path, const char *fmt, ...)
3649 xpt_print_path(path);
3656 xpt_path_string(struct cam_path *path, char *str, size_t str_len)
3661 if (path != NULL && path->bus != NULL)
3662 mtx_assert(path->bus->sim->mtx, MA_OWNED);
3665 sbuf_new(&sb, str, str_len, 0);
3668 sbuf_printf(&sb, "(nopath): ");
3670 if (path->periph != NULL)
3671 sbuf_printf(&sb, "(%s%d:", path->periph->periph_name,
3672 path->periph->unit_number);
3674 sbuf_printf(&sb, "(noperiph:");
3676 if (path->bus != NULL)
3677 sbuf_printf(&sb, "%s%d:%d:", path->bus->sim->sim_name,
3678 path->bus->sim->unit_number,
3679 path->bus->sim->bus_id);
3681 sbuf_printf(&sb, "nobus:");
3683 if (path->target != NULL)
3684 sbuf_printf(&sb, "%d:", path->target->target_id);
3686 sbuf_printf(&sb, "X:");
3688 if (path->device != NULL)
3689 sbuf_printf(&sb, "%d): ", path->device->lun_id);
3691 sbuf_printf(&sb, "X): ");
3695 return(sbuf_len(&sb));
3699 xpt_path_path_id(struct cam_path *path)
3701 return(path->bus->path_id);
3705 xpt_path_target_id(struct cam_path *path)
3707 if (path->target != NULL)
3708 return (path->target->target_id);
3710 return (CAM_TARGET_WILDCARD);
3714 xpt_path_lun_id(struct cam_path *path)
3716 if (path->device != NULL)
3717 return (path->device->lun_id);
3719 return (CAM_LUN_WILDCARD);
3723 xpt_path_sim(struct cam_path *path)
3726 return (path->bus->sim);
3730 xpt_path_periph(struct cam_path *path)
3732 mtx_assert(path->bus->sim->mtx, MA_OWNED);
3734 return (path->periph);
3738 xpt_path_legacy_ata_id(struct cam_path *path)
3743 if ((strcmp(path->bus->sim->sim_name, "ata") != 0) &&
3744 strcmp(path->bus->sim->sim_name, "ahcich") != 0 &&
3745 strcmp(path->bus->sim->sim_name, "mvsch") != 0 &&
3746 strcmp(path->bus->sim->sim_name, "siisch") != 0)
3749 if (strcmp(path->bus->sim->sim_name, "ata") == 0 &&
3750 path->bus->sim->unit_number < 2) {
3751 bus_id = path->bus->sim->unit_number;
3755 TAILQ_FOREACH(bus, &xsoftc.xpt_busses, links) {
3756 if (bus == path->bus)
3758 if ((strcmp(bus->sim->sim_name, "ata") == 0 &&
3759 bus->sim->unit_number >= 2) ||
3760 strcmp(bus->sim->sim_name, "ahcich") == 0 ||
3761 strcmp(bus->sim->sim_name, "mvsch") == 0 ||
3762 strcmp(bus->sim->sim_name, "siisch") == 0)
3767 if (path->target != NULL) {
3768 if (path->target->target_id < 2)
3769 return (bus_id * 2 + path->target->target_id);
3773 return (bus_id * 2);
3777 * Release a CAM control block for the caller. Remit the cost of the structure
3778 * to the device referenced by the path. If the this device had no 'credits'
3779 * and peripheral drivers have registered async callbacks for this notification
3783 xpt_release_ccb(union ccb *free_ccb)
3785 struct cam_path *path;
3786 struct cam_ed *device;
3788 struct cam_sim *sim;
3790 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_release_ccb\n"));
3791 path = free_ccb->ccb_h.path;
3792 device = path->device;
3796 mtx_assert(sim->mtx, MA_OWNED);
3798 cam_ccbq_release_opening(&device->ccbq);
3799 if (sim->ccb_count > sim->max_ccbs) {
3800 xpt_free_ccb(free_ccb);
3803 SLIST_INSERT_HEAD(&sim->ccb_freeq, &free_ccb->ccb_h,
3806 xpt_run_dev_allocq(device);
3809 /* Functions accessed by SIM drivers */
3811 static struct xpt_xport xport_default = {
3812 .alloc_device = xpt_alloc_device_default,
3813 .action = xpt_action_default,
3814 .async = xpt_dev_async_default,
3818 * A sim structure, listing the SIM entry points and instance
3819 * identification info is passed to xpt_bus_register to hook the SIM
3820 * into the CAM framework. xpt_bus_register creates a cam_eb entry
3821 * for this new bus and places it in the array of busses and assigns
3822 * it a path_id. The path_id may be influenced by "hard wiring"
3823 * information specified by the user. Once interrupt services are
3824 * available, the bus will be probed.
3827 xpt_bus_register(struct cam_sim *sim, device_t parent, u_int32_t bus)
3829 struct cam_eb *new_bus;
3830 struct cam_eb *old_bus;
3831 struct ccb_pathinq cpi;
3832 struct cam_path *path;
3835 mtx_assert(sim->mtx, MA_OWNED);
3838 new_bus = (struct cam_eb *)malloc(sizeof(*new_bus),
3839 M_CAMXPT, M_NOWAIT);
3840 if (new_bus == NULL) {
3841 /* Couldn't satisfy request */
3842 return (CAM_RESRC_UNAVAIL);
3844 if (strcmp(sim->sim_name, "xpt") != 0) {
3846 xptpathid(sim->sim_name, sim->unit_number, sim->bus_id);
3849 TAILQ_INIT(&new_bus->et_entries);
3850 new_bus->path_id = sim->path_id;
3853 timevalclear(&new_bus->last_reset);
3855 new_bus->refcount = 1; /* Held until a bus_deregister event */
3856 new_bus->generation = 0;
3859 old_bus = TAILQ_FIRST(&xsoftc.xpt_busses);
3860 while (old_bus != NULL
3861 && old_bus->path_id < new_bus->path_id)
3862 old_bus = TAILQ_NEXT(old_bus, links);
3863 if (old_bus != NULL)
3864 TAILQ_INSERT_BEFORE(old_bus, new_bus, links);
3866 TAILQ_INSERT_TAIL(&xsoftc.xpt_busses, new_bus, links);
3867 xsoftc.bus_generation++;
3871 * Set a default transport so that a PATH_INQ can be issued to
3872 * the SIM. This will then allow for probing and attaching of
3873 * a more appropriate transport.
3875 new_bus->xport = &xport_default;
3877 status = xpt_create_path(&path, /*periph*/NULL, sim->path_id,
3878 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
3879 if (status != CAM_REQ_CMP) {
3880 xpt_release_bus(new_bus);
3881 free(path, M_CAMXPT);
3882 return (CAM_RESRC_UNAVAIL);
3885 xpt_setup_ccb(&cpi.ccb_h, path, CAM_PRIORITY_NORMAL);
3886 cpi.ccb_h.func_code = XPT_PATH_INQ;
3887 xpt_action((union ccb *)&cpi);
3889 if (cpi.ccb_h.status == CAM_REQ_CMP) {
3890 switch (cpi.transport) {
3897 new_bus->xport = scsi_get_xport();
3901 new_bus->xport = ata_get_xport();
3904 new_bus->xport = &xport_default;
3909 /* Notify interested parties */
3910 if (sim->path_id != CAM_XPT_PATH_ID) {
3912 xpt_async(AC_PATH_REGISTERED, path, &cpi);
3913 if ((cpi.hba_misc & PIM_NOSCAN) == 0) {
3914 union ccb *scan_ccb;
3916 /* Initiate bus rescan. */
3917 scan_ccb = xpt_alloc_ccb_nowait();
3918 if (scan_ccb != NULL) {
3919 scan_ccb->ccb_h.path = path;
3920 scan_ccb->ccb_h.func_code = XPT_SCAN_BUS;
3921 scan_ccb->crcn.flags = 0;
3922 xpt_rescan(scan_ccb);
3925 "Can't allocate CCB to scan bus\n");
3927 xpt_free_path(path);
3929 xpt_free_path(path);
3930 return (CAM_SUCCESS);
3934 xpt_bus_deregister(path_id_t pathid)
3936 struct cam_path bus_path;
3939 status = xpt_compile_path(&bus_path, NULL, pathid,
3940 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
3941 if (status != CAM_REQ_CMP)
3944 xpt_async(AC_LOST_DEVICE, &bus_path, NULL);
3945 xpt_async(AC_PATH_DEREGISTERED, &bus_path, NULL);
3947 /* Release the reference count held while registered. */
3948 xpt_release_bus(bus_path.bus);
3949 xpt_release_path(&bus_path);
3951 return (CAM_REQ_CMP);
3955 xptnextfreepathid(void)
3963 bus = TAILQ_FIRST(&xsoftc.xpt_busses);
3965 /* Find an unoccupied pathid */
3966 while (bus != NULL && bus->path_id <= pathid) {
3967 if (bus->path_id == pathid)
3969 bus = TAILQ_NEXT(bus, links);
3974 * Ensure that this pathid is not reserved for
3975 * a bus that may be registered in the future.
3977 if (resource_string_value("scbus", pathid, "at", &strval) == 0) {
3979 /* Start the search over */
3987 xptpathid(const char *sim_name, int sim_unit, int sim_bus)
3994 pathid = CAM_XPT_PATH_ID;
3995 snprintf(buf, sizeof(buf), "%s%d", sim_name, sim_unit);
3997 while ((resource_find_match(&i, &dname, &dunit, "at", buf)) == 0) {
3998 if (strcmp(dname, "scbus")) {
3999 /* Avoid a bit of foot shooting. */
4002 if (dunit < 0) /* unwired?! */
4004 if (resource_int_value("scbus", dunit, "bus", &val) == 0) {
4005 if (sim_bus == val) {
4009 } else if (sim_bus == 0) {
4010 /* Unspecified matches bus 0 */
4014 printf("Ambiguous scbus configuration for %s%d "
4015 "bus %d, cannot wire down. The kernel "
4016 "config entry for scbus%d should "
4017 "specify a controller bus.\n"
4018 "Scbus will be assigned dynamically.\n",
4019 sim_name, sim_unit, sim_bus, dunit);
4024 if (pathid == CAM_XPT_PATH_ID)
4025 pathid = xptnextfreepathid();
4030 xpt_async_string(u_int32_t async_code)
4033 switch (async_code) {
4034 case AC_BUS_RESET: return ("AC_BUS_RESET");
4035 case AC_UNSOL_RESEL: return ("AC_UNSOL_RESEL");
4036 case AC_SCSI_AEN: return ("AC_SCSI_AEN");
4037 case AC_SENT_BDR: return ("AC_SENT_BDR");
4038 case AC_PATH_REGISTERED: return ("AC_PATH_REGISTERED");
4039 case AC_PATH_DEREGISTERED: return ("AC_PATH_DEREGISTERED");
4040 case AC_FOUND_DEVICE: return ("AC_FOUND_DEVICE");
4041 case AC_LOST_DEVICE: return ("AC_LOST_DEVICE");
4042 case AC_TRANSFER_NEG: return ("AC_TRANSFER_NEG");
4043 case AC_INQ_CHANGED: return ("AC_INQ_CHANGED");
4044 case AC_GETDEV_CHANGED: return ("AC_GETDEV_CHANGED");
4045 case AC_CONTRACT: return ("AC_CONTRACT");
4046 case AC_ADVINFO_CHANGED: return ("AC_ADVINFO_CHANGED");
4047 case AC_UNIT_ATTENTION: return ("AC_UNIT_ATTENTION");
4049 return ("AC_UNKNOWN");
4053 xpt_async(u_int32_t async_code, struct cam_path *path, void *async_arg)
4056 struct cam_et *target, *next_target;
4057 struct cam_ed *device, *next_device;
4059 mtx_assert(path->bus->sim->mtx, MA_OWNED);
4060 CAM_DEBUG(path, CAM_DEBUG_TRACE | CAM_DEBUG_INFO,
4061 ("xpt_async(%s)\n", xpt_async_string(async_code)));
4064 * Most async events come from a CAM interrupt context. In
4065 * a few cases, the error recovery code at the peripheral layer,
4066 * which may run from our SWI or a process context, may signal
4067 * deferred events with a call to xpt_async.
4072 if (async_code == AC_BUS_RESET) {
4073 /* Update our notion of when the last reset occurred */
4074 microtime(&bus->last_reset);
4077 for (target = TAILQ_FIRST(&bus->et_entries);
4079 target = next_target) {
4081 next_target = TAILQ_NEXT(target, links);
4083 if (path->target != target
4084 && path->target->target_id != CAM_TARGET_WILDCARD
4085 && target->target_id != CAM_TARGET_WILDCARD)
4088 if (async_code == AC_SENT_BDR) {
4089 /* Update our notion of when the last reset occurred */
4090 microtime(&path->target->last_reset);
4093 for (device = TAILQ_FIRST(&target->ed_entries);
4095 device = next_device) {
4097 next_device = TAILQ_NEXT(device, links);
4099 if (path->device != device
4100 && path->device->lun_id != CAM_LUN_WILDCARD
4101 && device->lun_id != CAM_LUN_WILDCARD)
4104 * The async callback could free the device.
4105 * If it is a broadcast async, it doesn't hold
4106 * device reference, so take our own reference.
4108 xpt_acquire_device(device);
4109 (*(bus->xport->async))(async_code, bus,
4113 xpt_async_bcast(&device->asyncs, async_code,
4115 xpt_release_device(device);
4120 * If this wasn't a fully wildcarded async, tell all
4121 * clients that want all async events.
4123 if (bus != xpt_periph->path->bus)
4124 xpt_async_bcast(&xpt_periph->path->device->asyncs, async_code,
4129 xpt_async_bcast(struct async_list *async_head,
4130 u_int32_t async_code,
4131 struct cam_path *path, void *async_arg)
4133 struct async_node *cur_entry;
4135 cur_entry = SLIST_FIRST(async_head);
4136 while (cur_entry != NULL) {
4137 struct async_node *next_entry;
4139 * Grab the next list entry before we call the current
4140 * entry's callback. This is because the callback function
4141 * can delete its async callback entry.
4143 next_entry = SLIST_NEXT(cur_entry, links);
4144 if ((cur_entry->event_enable & async_code) != 0)
4145 cur_entry->callback(cur_entry->callback_arg,
4148 cur_entry = next_entry;
4153 xpt_dev_async_default(u_int32_t async_code, struct cam_eb *bus,
4154 struct cam_et *target, struct cam_ed *device,
4157 printf("%s called\n", __func__);
4161 xpt_freeze_devq(struct cam_path *path, u_int count)
4163 struct cam_ed *dev = path->device;
4165 mtx_assert(path->bus->sim->mtx, MA_OWNED);
4166 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_freeze_devq() %u->%u\n",
4167 dev->ccbq.queue.qfrozen_cnt, dev->ccbq.queue.qfrozen_cnt + count));
4168 dev->ccbq.queue.qfrozen_cnt += count;
4169 /* Remove frozen device from sendq. */
4170 if (device_is_queued(dev)) {
4171 camq_remove(&dev->sim->devq->send_queue,
4172 dev->devq_entry.pinfo.index);
4174 return (dev->ccbq.queue.qfrozen_cnt);
4178 xpt_freeze_simq(struct cam_sim *sim, u_int count)
4181 mtx_assert(sim->mtx, MA_OWNED);
4182 sim->devq->send_queue.qfrozen_cnt += count;
4183 return (sim->devq->send_queue.qfrozen_cnt);
4187 xpt_release_devq_timeout(void *arg)
4189 struct cam_ed *device;
4191 device = (struct cam_ed *)arg;
4192 CAM_DEBUG_DEV(device, CAM_DEBUG_TRACE, ("xpt_release_devq_timeout\n"));
4193 xpt_release_devq_device(device, /*count*/1, /*run_queue*/TRUE);
4197 xpt_release_devq(struct cam_path *path, u_int count, int run_queue)
4200 mtx_assert(path->bus->sim->mtx, MA_OWNED);
4201 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_release_devq(%d, %d)\n",
4203 xpt_release_devq_device(path->device, count, run_queue);
4207 xpt_release_devq_device(struct cam_ed *dev, u_int count, int run_queue)
4210 CAM_DEBUG_DEV(dev, CAM_DEBUG_TRACE,
4211 ("xpt_release_devq_device(%d, %d) %u->%u\n", count, run_queue,
4212 dev->ccbq.queue.qfrozen_cnt, dev->ccbq.queue.qfrozen_cnt - count));
4213 if (count > dev->ccbq.queue.qfrozen_cnt) {
4215 printf("xpt_release_devq(): requested %u > present %u\n",
4216 count, dev->ccbq.queue.qfrozen_cnt);
4218 count = dev->ccbq.queue.qfrozen_cnt;
4220 dev->ccbq.queue.qfrozen_cnt -= count;
4221 if (dev->ccbq.queue.qfrozen_cnt == 0) {
4223 * No longer need to wait for a successful
4224 * command completion.
4226 dev->flags &= ~CAM_DEV_REL_ON_COMPLETE;
4228 * Remove any timeouts that might be scheduled
4229 * to release this queue.
4231 if ((dev->flags & CAM_DEV_REL_TIMEOUT_PENDING) != 0) {
4232 callout_stop(&dev->callout);
4233 dev->flags &= ~CAM_DEV_REL_TIMEOUT_PENDING;
4235 xpt_run_dev_allocq(dev);
4239 * Now that we are unfrozen schedule the
4240 * device so any pending transactions are
4243 if (xpt_schedule_devq(dev->sim->devq, dev))
4244 xpt_run_devq(dev->sim->devq);
4249 xpt_release_simq(struct cam_sim *sim, int run_queue)
4253 mtx_assert(sim->mtx, MA_OWNED);
4254 sendq = &(sim->devq->send_queue);
4255 if (sendq->qfrozen_cnt <= 0) {
4257 printf("xpt_release_simq: requested 1 > present %u\n",
4258 sendq->qfrozen_cnt);
4261 sendq->qfrozen_cnt--;
4262 if (sendq->qfrozen_cnt == 0) {
4264 * If there is a timeout scheduled to release this
4265 * sim queue, remove it. The queue frozen count is
4268 if ((sim->flags & CAM_SIM_REL_TIMEOUT_PENDING) != 0){
4269 callout_stop(&sim->callout);
4270 sim->flags &= ~CAM_SIM_REL_TIMEOUT_PENDING;
4274 * Now that we are unfrozen run the send queue.
4276 xpt_run_devq(sim->devq);
4282 * XXX Appears to be unused.
4285 xpt_release_simq_timeout(void *arg)
4287 struct cam_sim *sim;
4289 sim = (struct cam_sim *)arg;
4290 xpt_release_simq(sim, /* run_queue */ TRUE);
4294 xpt_done(union ccb *done_ccb)
4296 struct cam_sim *sim;
4299 CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("xpt_done\n"));
4300 if ((done_ccb->ccb_h.func_code & XPT_FC_QUEUED) != 0) {
4302 * Queue up the request for handling by our SWI handler
4303 * any of the "non-immediate" type of ccbs.
4305 sim = done_ccb->ccb_h.path->bus->sim;
4306 TAILQ_INSERT_TAIL(&sim->sim_doneq, &done_ccb->ccb_h,
4308 done_ccb->ccb_h.pinfo.index = CAM_DONEQ_INDEX;
4309 if ((sim->flags & (CAM_SIM_ON_DONEQ | CAM_SIM_POLLED |
4310 CAM_SIM_BATCH)) == 0) {
4311 mtx_lock(&cam_simq_lock);
4312 first = TAILQ_EMPTY(&cam_simq);
4313 TAILQ_INSERT_TAIL(&cam_simq, sim, links);
4314 mtx_unlock(&cam_simq_lock);
4315 sim->flags |= CAM_SIM_ON_DONEQ;
4317 swi_sched(cambio_ih, 0);
4323 xpt_batch_start(struct cam_sim *sim)
4326 KASSERT((sim->flags & CAM_SIM_BATCH) == 0, ("Batch flag already set"));
4327 sim->flags |= CAM_SIM_BATCH;
4331 xpt_batch_done(struct cam_sim *sim)
4334 KASSERT((sim->flags & CAM_SIM_BATCH) != 0, ("Batch flag was not set"));
4335 sim->flags &= ~CAM_SIM_BATCH;
4336 if (!TAILQ_EMPTY(&sim->sim_doneq) &&
4337 (sim->flags & CAM_SIM_ON_DONEQ) == 0)
4338 camisr_runqueue(sim);
4346 new_ccb = malloc(sizeof(*new_ccb), M_CAMCCB, M_ZERO|M_WAITOK);
4351 xpt_alloc_ccb_nowait()
4355 new_ccb = malloc(sizeof(*new_ccb), M_CAMCCB, M_ZERO|M_NOWAIT);
4360 xpt_free_ccb(union ccb *free_ccb)
4362 free(free_ccb, M_CAMCCB);
4367 /* Private XPT functions */
4370 * Get a CAM control block for the caller. Charge the structure to the device
4371 * referenced by the path. If the this device has no 'credits' then the
4372 * device already has the maximum number of outstanding operations under way
4373 * and we return NULL. If we don't have sufficient resources to allocate more
4374 * ccbs, we also return NULL.
4377 xpt_get_ccb(struct cam_ed *device)
4380 struct cam_sim *sim;
4383 if ((new_ccb = (union ccb *)SLIST_FIRST(&sim->ccb_freeq)) == NULL) {
4384 new_ccb = xpt_alloc_ccb_nowait();
4385 if (new_ccb == NULL) {
4388 if ((sim->flags & CAM_SIM_MPSAFE) == 0)
4389 callout_handle_init(&new_ccb->ccb_h.timeout_ch);
4390 SLIST_INSERT_HEAD(&sim->ccb_freeq, &new_ccb->ccb_h,
4394 cam_ccbq_take_opening(&device->ccbq);
4395 SLIST_REMOVE_HEAD(&sim->ccb_freeq, xpt_links.sle);
4400 xpt_release_bus(struct cam_eb *bus)
4404 KASSERT(bus->refcount >= 1, ("bus->refcount >= 1"));
4405 if (--bus->refcount > 0) {
4409 KASSERT(TAILQ_EMPTY(&bus->et_entries),
4410 ("refcount is zero, but target list is not empty"));
4411 TAILQ_REMOVE(&xsoftc.xpt_busses, bus, links);
4412 xsoftc.bus_generation++;
4414 cam_sim_release(bus->sim);
4415 free(bus, M_CAMXPT);
4418 static struct cam_et *
4419 xpt_alloc_target(struct cam_eb *bus, target_id_t target_id)
4421 struct cam_et *cur_target, *target;
4423 mtx_assert(bus->sim->mtx, MA_OWNED);
4424 target = (struct cam_et *)malloc(sizeof(*target), M_CAMXPT,
4429 TAILQ_INIT(&target->ed_entries);
4431 target->target_id = target_id;
4432 target->refcount = 1;
4433 target->generation = 0;
4434 target->luns = NULL;
4435 timevalclear(&target->last_reset);
4437 * Hold a reference to our parent bus so it
4438 * will not go away before we do.
4444 /* Insertion sort into our bus's target list */
4445 cur_target = TAILQ_FIRST(&bus->et_entries);
4446 while (cur_target != NULL && cur_target->target_id < target_id)
4447 cur_target = TAILQ_NEXT(cur_target, links);
4448 if (cur_target != NULL) {
4449 TAILQ_INSERT_BEFORE(cur_target, target, links);
4451 TAILQ_INSERT_TAIL(&bus->et_entries, target, links);
4458 xpt_release_target(struct cam_et *target)
4461 mtx_assert(target->bus->sim->mtx, MA_OWNED);
4462 if (--target->refcount > 0)
4464 KASSERT(TAILQ_EMPTY(&target->ed_entries),
4465 ("refcount is zero, but device list is not empty"));
4466 TAILQ_REMOVE(&target->bus->et_entries, target, links);
4467 target->bus->generation++;
4468 xpt_release_bus(target->bus);
4470 free(target->luns, M_CAMXPT);
4471 free(target, M_CAMXPT);
4474 static struct cam_ed *
4475 xpt_alloc_device_default(struct cam_eb *bus, struct cam_et *target,
4478 struct cam_ed *device;
4480 device = xpt_alloc_device(bus, target, lun_id);
4484 device->mintags = 1;
4485 device->maxtags = 1;
4486 bus->sim->max_ccbs += device->ccbq.devq_openings;
4491 xpt_alloc_device(struct cam_eb *bus, struct cam_et *target, lun_id_t lun_id)
4493 struct cam_ed *cur_device, *device;
4494 struct cam_devq *devq;
4497 mtx_assert(target->bus->sim->mtx, MA_OWNED);
4498 /* Make space for us in the device queue on our bus */
4499 devq = bus->sim->devq;
4500 status = cam_devq_resize(devq, devq->send_queue.array_size + 1);
4501 if (status != CAM_REQ_CMP)
4504 device = (struct cam_ed *)malloc(sizeof(*device),
4505 M_CAMDEV, M_NOWAIT|M_ZERO);
4509 cam_init_pinfo(&device->devq_entry.pinfo);
4510 device->devq_entry.device = device;
4511 device->target = target;
4512 device->lun_id = lun_id;
4513 device->sim = bus->sim;
4514 /* Initialize our queues */
4515 if (camq_init(&device->drvq, 0) != 0) {
4516 free(device, M_CAMDEV);
4519 if (cam_ccbq_init(&device->ccbq,
4520 bus->sim->max_dev_openings) != 0) {
4521 camq_fini(&device->drvq);
4522 free(device, M_CAMDEV);
4525 SLIST_INIT(&device->asyncs);
4526 SLIST_INIT(&device->periphs);
4527 device->generation = 0;
4528 device->flags = CAM_DEV_UNCONFIGURED;
4529 device->tag_delay_count = 0;
4530 device->tag_saved_openings = 0;
4531 device->refcount = 1;
4532 callout_init_mtx(&device->callout, bus->sim->mtx, 0);
4534 cur_device = TAILQ_FIRST(&target->ed_entries);
4535 while (cur_device != NULL && cur_device->lun_id < lun_id)
4536 cur_device = TAILQ_NEXT(cur_device, links);
4537 if (cur_device != NULL)
4538 TAILQ_INSERT_BEFORE(cur_device, device, links);
4540 TAILQ_INSERT_TAIL(&target->ed_entries, device, links);
4542 target->generation++;
4547 xpt_acquire_device(struct cam_ed *device)
4550 mtx_assert(device->sim->mtx, MA_OWNED);
4555 xpt_release_device(struct cam_ed *device)
4557 struct cam_devq *devq;
4559 mtx_assert(device->sim->mtx, MA_OWNED);
4560 if (--device->refcount > 0)
4563 KASSERT(SLIST_EMPTY(&device->periphs),
4564 ("refcount is zero, but periphs list is not empty"));
4565 if (device->devq_entry.pinfo.index != CAM_UNQUEUED_INDEX)
4566 panic("Removing device while still queued for ccbs");
4568 if ((device->flags & CAM_DEV_REL_TIMEOUT_PENDING) != 0)
4569 callout_stop(&device->callout);
4571 TAILQ_REMOVE(&device->target->ed_entries, device,links);
4572 device->target->generation++;
4573 device->target->bus->sim->max_ccbs -= device->ccbq.devq_openings;
4574 /* Release our slot in the devq */
4575 devq = device->target->bus->sim->devq;
4576 cam_devq_resize(devq, devq->send_queue.array_size - 1);
4577 camq_fini(&device->drvq);
4578 cam_ccbq_fini(&device->ccbq);
4580 * Free allocated memory. free(9) does nothing if the
4581 * supplied pointer is NULL, so it is safe to call without
4584 free(device->supported_vpds, M_CAMXPT);
4585 free(device->device_id, M_CAMXPT);
4586 free(device->physpath, M_CAMXPT);
4587 free(device->rcap_buf, M_CAMXPT);
4588 free(device->serial_num, M_CAMXPT);
4590 xpt_release_target(device->target);
4591 free(device, M_CAMDEV);
4595 xpt_dev_ccbq_resize(struct cam_path *path, int newopenings)
4603 diff = newopenings - (dev->ccbq.dev_active + dev->ccbq.dev_openings);
4604 result = cam_ccbq_resize(&dev->ccbq, newopenings);
4605 if ((dev->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
4606 || (dev->inq_flags & SID_CmdQue) != 0)
4607 dev->tag_saved_openings = newopenings;
4608 /* Adjust the global limit */
4609 dev->sim->max_ccbs += diff;
4613 static struct cam_eb *
4614 xpt_find_bus(path_id_t path_id)
4619 for (bus = TAILQ_FIRST(&xsoftc.xpt_busses);
4621 bus = TAILQ_NEXT(bus, links)) {
4622 if (bus->path_id == path_id) {
4631 static struct cam_et *
4632 xpt_find_target(struct cam_eb *bus, target_id_t target_id)
4634 struct cam_et *target;
4636 mtx_assert(bus->sim->mtx, MA_OWNED);
4637 for (target = TAILQ_FIRST(&bus->et_entries);
4639 target = TAILQ_NEXT(target, links)) {
4640 if (target->target_id == target_id) {
4648 static struct cam_ed *
4649 xpt_find_device(struct cam_et *target, lun_id_t lun_id)
4651 struct cam_ed *device;
4653 mtx_assert(target->bus->sim->mtx, MA_OWNED);
4654 for (device = TAILQ_FIRST(&target->ed_entries);
4656 device = TAILQ_NEXT(device, links)) {
4657 if (device->lun_id == lun_id) {
4666 xpt_start_tags(struct cam_path *path)
4668 struct ccb_relsim crs;
4669 struct cam_ed *device;
4670 struct cam_sim *sim;
4673 device = path->device;
4674 sim = path->bus->sim;
4675 device->flags &= ~CAM_DEV_TAG_AFTER_COUNT;
4676 xpt_freeze_devq(path, /*count*/1);
4677 device->inq_flags |= SID_CmdQue;
4678 if (device->tag_saved_openings != 0)
4679 newopenings = device->tag_saved_openings;
4681 newopenings = min(device->maxtags,
4682 sim->max_tagged_dev_openings);
4683 xpt_dev_ccbq_resize(path, newopenings);
4684 xpt_async(AC_GETDEV_CHANGED, path, NULL);
4685 xpt_setup_ccb(&crs.ccb_h, path, CAM_PRIORITY_NORMAL);
4686 crs.ccb_h.func_code = XPT_REL_SIMQ;
4687 crs.release_flags = RELSIM_RELEASE_AFTER_QEMPTY;
4689 = crs.release_timeout
4692 xpt_action((union ccb *)&crs);
4696 xpt_stop_tags(struct cam_path *path)
4698 struct ccb_relsim crs;
4699 struct cam_ed *device;
4700 struct cam_sim *sim;
4702 device = path->device;
4703 sim = path->bus->sim;
4704 device->flags &= ~CAM_DEV_TAG_AFTER_COUNT;
4705 device->tag_delay_count = 0;
4706 xpt_freeze_devq(path, /*count*/1);
4707 device->inq_flags &= ~SID_CmdQue;
4708 xpt_dev_ccbq_resize(path, sim->max_dev_openings);
4709 xpt_async(AC_GETDEV_CHANGED, path, NULL);
4710 xpt_setup_ccb(&crs.ccb_h, path, CAM_PRIORITY_NORMAL);
4711 crs.ccb_h.func_code = XPT_REL_SIMQ;
4712 crs.release_flags = RELSIM_RELEASE_AFTER_QEMPTY;
4714 = crs.release_timeout
4717 xpt_action((union ccb *)&crs);
4721 xpt_boot_delay(void *arg)
4728 xpt_config(void *arg)
4731 * Now that interrupts are enabled, go find our devices
4734 /* Setup debugging path */
4735 if (cam_dflags != CAM_DEBUG_NONE) {
4736 if (xpt_create_path_unlocked(&cam_dpath, NULL,
4737 CAM_DEBUG_BUS, CAM_DEBUG_TARGET,
4738 CAM_DEBUG_LUN) != CAM_REQ_CMP) {
4739 printf("xpt_config: xpt_create_path() failed for debug"
4740 " target %d:%d:%d, debugging disabled\n",
4741 CAM_DEBUG_BUS, CAM_DEBUG_TARGET, CAM_DEBUG_LUN);
4742 cam_dflags = CAM_DEBUG_NONE;
4747 periphdriver_init(1);
4749 callout_init(&xsoftc.boot_callout, 1);
4750 callout_reset(&xsoftc.boot_callout, hz * xsoftc.boot_delay / 1000,
4751 xpt_boot_delay, NULL);
4752 /* Fire up rescan thread. */
4753 if (kproc_create(xpt_scanner_thread, NULL, NULL, 0, 0, "xpt_thrd")) {
4754 printf("xpt_config: failed to create rescan thread.\n");
4762 xsoftc.buses_to_config++;
4767 xpt_release_boot(void)
4770 xsoftc.buses_to_config--;
4771 if (xsoftc.buses_to_config == 0 && xsoftc.buses_config_done == 0) {
4772 struct xpt_task *task;
4774 xsoftc.buses_config_done = 1;
4776 /* Call manually because we don't have any busses */
4777 task = malloc(sizeof(struct xpt_task), M_CAMXPT, M_NOWAIT);
4779 TASK_INIT(&task->task, 0, xpt_finishconfig_task, task);
4780 taskqueue_enqueue(taskqueue_thread, &task->task);
4787 * If the given device only has one peripheral attached to it, and if that
4788 * peripheral is the passthrough driver, announce it. This insures that the
4789 * user sees some sort of announcement for every peripheral in their system.
4792 xptpassannouncefunc(struct cam_ed *device, void *arg)
4794 struct cam_periph *periph;
4797 for (periph = SLIST_FIRST(&device->periphs), i = 0; periph != NULL;
4798 periph = SLIST_NEXT(periph, periph_links), i++);
4800 periph = SLIST_FIRST(&device->periphs);
4802 && (strncmp(periph->periph_name, "pass", 4) == 0))
4803 xpt_announce_periph(periph, NULL);
4809 xpt_finishconfig_task(void *context, int pending)
4812 periphdriver_init(2);
4814 * Check for devices with no "standard" peripheral driver
4815 * attached. For any devices like that, announce the
4816 * passthrough driver so the user will see something.
4819 xpt_for_all_devices(xptpassannouncefunc, NULL);
4821 /* Release our hook so that the boot can continue. */
4822 config_intrhook_disestablish(xsoftc.xpt_config_hook);
4823 free(xsoftc.xpt_config_hook, M_CAMXPT);
4824 xsoftc.xpt_config_hook = NULL;
4826 free(context, M_CAMXPT);
4830 xpt_register_async(int event, ac_callback_t *cbfunc, void *cbarg,
4831 struct cam_path *path)
4833 struct ccb_setasync csa;
4838 mtx_lock(&xsoftc.xpt_lock);
4839 status = xpt_create_path(&path, /*periph*/NULL, CAM_XPT_PATH_ID,
4840 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
4841 if (status != CAM_REQ_CMP) {
4842 mtx_unlock(&xsoftc.xpt_lock);
4848 xpt_setup_ccb(&csa.ccb_h, path, CAM_PRIORITY_NORMAL);
4849 csa.ccb_h.func_code = XPT_SASYNC_CB;
4850 csa.event_enable = event;
4851 csa.callback = cbfunc;
4852 csa.callback_arg = cbarg;
4853 xpt_action((union ccb *)&csa);
4854 status = csa.ccb_h.status;
4857 xpt_free_path(path);
4858 mtx_unlock(&xsoftc.xpt_lock);
4861 if ((status == CAM_REQ_CMP) &&
4862 (csa.event_enable & AC_FOUND_DEVICE)) {
4864 * Get this peripheral up to date with all
4865 * the currently existing devices.
4867 xpt_for_all_devices(xptsetasyncfunc, &csa);
4869 if ((status == CAM_REQ_CMP) &&
4870 (csa.event_enable & AC_PATH_REGISTERED)) {
4872 * Get this peripheral up to date with all
4873 * the currently existing busses.
4875 xpt_for_all_busses(xptsetasyncbusfunc, &csa);
4882 xptaction(struct cam_sim *sim, union ccb *work_ccb)
4884 CAM_DEBUG(work_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("xptaction\n"));
4886 switch (work_ccb->ccb_h.func_code) {
4887 /* Common cases first */
4888 case XPT_PATH_INQ: /* Path routing inquiry */
4890 struct ccb_pathinq *cpi;
4892 cpi = &work_ccb->cpi;
4893 cpi->version_num = 1; /* XXX??? */
4894 cpi->hba_inquiry = 0;
4895 cpi->target_sprt = 0;
4897 cpi->hba_eng_cnt = 0;
4898 cpi->max_target = 0;
4900 cpi->initiator_id = 0;
4901 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
4902 strncpy(cpi->hba_vid, "", HBA_IDLEN);
4903 strncpy(cpi->dev_name, sim->sim_name, DEV_IDLEN);
4904 cpi->unit_number = sim->unit_number;
4905 cpi->bus_id = sim->bus_id;
4906 cpi->base_transfer_speed = 0;
4907 cpi->protocol = PROTO_UNSPECIFIED;
4908 cpi->protocol_version = PROTO_VERSION_UNSPECIFIED;
4909 cpi->transport = XPORT_UNSPECIFIED;
4910 cpi->transport_version = XPORT_VERSION_UNSPECIFIED;
4911 cpi->ccb_h.status = CAM_REQ_CMP;
4916 work_ccb->ccb_h.status = CAM_REQ_INVALID;
4923 * The xpt as a "controller" has no interrupt sources, so polling
4927 xptpoll(struct cam_sim *sim)
4932 xpt_lock_buses(void)
4934 mtx_lock(&xsoftc.xpt_topo_lock);
4938 xpt_unlock_buses(void)
4940 mtx_unlock(&xsoftc.xpt_topo_lock);
4947 struct cam_sim *sim;
4949 mtx_lock(&cam_simq_lock);
4951 while (!TAILQ_EMPTY(&cam_simq)) {
4952 TAILQ_CONCAT(&queue, &cam_simq, links);
4953 mtx_unlock(&cam_simq_lock);
4955 while ((sim = TAILQ_FIRST(&queue)) != NULL) {
4956 TAILQ_REMOVE(&queue, sim, links);
4958 camisr_runqueue(sim);
4959 sim->flags &= ~CAM_SIM_ON_DONEQ;
4960 CAM_SIM_UNLOCK(sim);
4962 mtx_lock(&cam_simq_lock);
4964 mtx_unlock(&cam_simq_lock);
4968 camisr_runqueue(struct cam_sim *sim)
4970 struct ccb_hdr *ccb_h;
4972 while ((ccb_h = TAILQ_FIRST(&sim->sim_doneq)) != NULL) {
4975 TAILQ_REMOVE(&sim->sim_doneq, ccb_h, sim_links.tqe);
4976 ccb_h->pinfo.index = CAM_UNQUEUED_INDEX;
4978 CAM_DEBUG(ccb_h->path, CAM_DEBUG_TRACE,
4983 if (ccb_h->flags & CAM_HIGH_POWER) {
4984 struct highpowerlist *hphead;
4985 struct cam_ed *device;
4987 mtx_lock(&xsoftc.xpt_lock);
4988 hphead = &xsoftc.highpowerq;
4990 device = STAILQ_FIRST(hphead);
4993 * Increment the count since this command is done.
4995 xsoftc.num_highpower++;
4998 * Any high powered commands queued up?
5000 if (device != NULL) {
5002 STAILQ_REMOVE_HEAD(hphead, highpowerq_entry);
5003 mtx_unlock(&xsoftc.xpt_lock);
5005 xpt_release_devq_device(device,
5006 /*count*/1, /*runqueue*/TRUE);
5008 mtx_unlock(&xsoftc.xpt_lock);
5011 if ((ccb_h->func_code & XPT_FC_USER_CCB) == 0) {
5014 dev = ccb_h->path->device;
5016 cam_ccbq_ccb_done(&dev->ccbq, (union ccb *)ccb_h);
5017 sim->devq->send_active--;
5018 sim->devq->send_openings++;
5021 if (((dev->flags & CAM_DEV_REL_ON_QUEUE_EMPTY) != 0
5022 && (dev->ccbq.dev_active == 0))) {
5023 dev->flags &= ~CAM_DEV_REL_ON_QUEUE_EMPTY;
5024 xpt_release_devq(ccb_h->path, /*count*/1,
5025 /*run_queue*/FALSE);
5028 if (((dev->flags & CAM_DEV_REL_ON_COMPLETE) != 0
5029 && (ccb_h->status&CAM_STATUS_MASK) != CAM_REQUEUE_REQ)) {
5030 dev->flags &= ~CAM_DEV_REL_ON_COMPLETE;
5031 xpt_release_devq(ccb_h->path, /*count*/1,
5032 /*run_queue*/FALSE);
5035 if ((dev->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
5036 && (--dev->tag_delay_count == 0))
5037 xpt_start_tags(ccb_h->path);
5038 if (!device_is_queued(dev)) {
5039 (void)xpt_schedule_devq(sim->devq, dev);
5043 if (ccb_h->status & CAM_RELEASE_SIMQ) {
5044 xpt_release_simq(sim, /*run_queue*/TRUE);
5045 ccb_h->status &= ~CAM_RELEASE_SIMQ;
5049 if ((ccb_h->flags & CAM_DEV_QFRZDIS)
5050 && (ccb_h->status & CAM_DEV_QFRZN)) {
5051 xpt_release_devq(ccb_h->path, /*count*/1,
5053 ccb_h->status &= ~CAM_DEV_QFRZN;
5055 xpt_run_devq(sim->devq);
5058 /* Call the peripheral driver's callback */
5059 (*ccb_h->cbfcnp)(ccb_h->path->periph, (union ccb *)ccb_h);