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, xptdoioctl);
406 xptdoioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td)
414 * For the transport layer CAMIOCOMMAND ioctl, we really only want
415 * to accept CCB types that don't quite make sense to send through a
416 * passthrough driver. XPT_PATH_INQ is an exception to this, as stated
424 inccb = (union ccb *)addr;
426 bus = xpt_find_bus(inccb->ccb_h.path_id);
430 switch (inccb->ccb_h.func_code) {
433 if (inccb->ccb_h.target_id != CAM_TARGET_WILDCARD ||
434 inccb->ccb_h.target_lun != CAM_LUN_WILDCARD) {
435 xpt_release_bus(bus);
440 if (inccb->ccb_h.target_id == CAM_TARGET_WILDCARD ||
441 inccb->ccb_h.target_lun != CAM_LUN_WILDCARD) {
442 xpt_release_bus(bus);
450 switch(inccb->ccb_h.func_code) {
458 ccb = xpt_alloc_ccb();
460 CAM_SIM_LOCK(bus->sim);
463 * Create a path using the bus, target, and lun the
466 if (xpt_create_path(&ccb->ccb_h.path, NULL,
467 inccb->ccb_h.path_id,
468 inccb->ccb_h.target_id,
469 inccb->ccb_h.target_lun) !=
472 CAM_SIM_UNLOCK(bus->sim);
476 /* Ensure all of our fields are correct */
477 xpt_setup_ccb(&ccb->ccb_h, ccb->ccb_h.path,
478 inccb->ccb_h.pinfo.priority);
479 xpt_merge_ccb(ccb, inccb);
480 ccb->ccb_h.cbfcnp = xptdone;
481 cam_periph_runccb(ccb, NULL, 0, 0, NULL);
482 bcopy(ccb, inccb, sizeof(union ccb));
483 xpt_free_path(ccb->ccb_h.path);
485 CAM_SIM_UNLOCK(bus->sim);
492 * This is an immediate CCB, so it's okay to
493 * allocate it on the stack.
496 CAM_SIM_LOCK(bus->sim);
499 * Create a path using the bus, target, and lun the
502 if (xpt_create_path(&ccb.ccb_h.path, NULL,
503 inccb->ccb_h.path_id,
504 inccb->ccb_h.target_id,
505 inccb->ccb_h.target_lun) !=
508 CAM_SIM_UNLOCK(bus->sim);
511 /* Ensure all of our fields are correct */
512 xpt_setup_ccb(&ccb.ccb_h, ccb.ccb_h.path,
513 inccb->ccb_h.pinfo.priority);
514 xpt_merge_ccb(&ccb, inccb);
515 ccb.ccb_h.cbfcnp = xptdone;
517 bcopy(&ccb, inccb, sizeof(union ccb));
518 xpt_free_path(ccb.ccb_h.path);
519 CAM_SIM_UNLOCK(bus->sim);
523 case XPT_DEV_MATCH: {
524 struct cam_periph_map_info mapinfo;
525 struct cam_path *old_path;
528 * We can't deal with physical addresses for this
529 * type of transaction.
531 if ((inccb->ccb_h.flags & CAM_DATA_MASK) !=
538 * Save this in case the caller had it set to
539 * something in particular.
541 old_path = inccb->ccb_h.path;
544 * We really don't need a path for the matching
545 * code. The path is needed because of the
546 * debugging statements in xpt_action(). They
547 * assume that the CCB has a valid path.
549 inccb->ccb_h.path = xpt_periph->path;
551 bzero(&mapinfo, sizeof(mapinfo));
554 * Map the pattern and match buffers into kernel
555 * virtual address space.
557 error = cam_periph_mapmem(inccb, &mapinfo);
560 inccb->ccb_h.path = old_path;
565 * This is an immediate CCB, we can send it on directly.
567 CAM_SIM_LOCK(xpt_path_sim(xpt_periph->path));
569 CAM_SIM_UNLOCK(xpt_path_sim(xpt_periph->path));
572 * Map the buffers back into user space.
574 cam_periph_unmapmem(inccb, &mapinfo);
576 inccb->ccb_h.path = old_path;
585 xpt_release_bus(bus);
589 * This is the getpassthru ioctl. It takes a XPT_GDEVLIST ccb as input,
590 * with the periphal driver name and unit name filled in. The other
591 * fields don't really matter as input. The passthrough driver name
592 * ("pass"), and unit number are passed back in the ccb. The current
593 * device generation number, and the index into the device peripheral
594 * driver list, and the status are also passed back. Note that
595 * since we do everything in one pass, unlike the XPT_GDEVLIST ccb,
596 * we never return a status of CAM_GDEVLIST_LIST_CHANGED. It is
597 * (or rather should be) impossible for the device peripheral driver
598 * list to change since we look at the whole thing in one pass, and
599 * we do it with lock protection.
602 case CAMGETPASSTHRU: {
604 struct cam_periph *periph;
605 struct periph_driver **p_drv;
608 int base_periph_found;
610 ccb = (union ccb *)addr;
611 unit = ccb->cgdl.unit_number;
612 name = ccb->cgdl.periph_name;
613 base_periph_found = 0;
616 * Sanity check -- make sure we don't get a null peripheral
619 if (*ccb->cgdl.periph_name == '\0') {
624 /* Keep the list from changing while we traverse it */
627 /* first find our driver in the list of drivers */
628 for (p_drv = periph_drivers; *p_drv != NULL; p_drv++)
629 if (strcmp((*p_drv)->driver_name, name) == 0)
632 if (*p_drv == NULL) {
634 ccb->ccb_h.status = CAM_REQ_CMP_ERR;
635 ccb->cgdl.status = CAM_GDEVLIST_ERROR;
636 *ccb->cgdl.periph_name = '\0';
637 ccb->cgdl.unit_number = 0;
643 * Run through every peripheral instance of this driver
644 * and check to see whether it matches the unit passed
645 * in by the user. If it does, get out of the loops and
646 * find the passthrough driver associated with that
649 for (periph = TAILQ_FIRST(&(*p_drv)->units); periph != NULL;
650 periph = TAILQ_NEXT(periph, unit_links)) {
652 if (periph->unit_number == unit)
656 * If we found the peripheral driver that the user passed
657 * in, go through all of the peripheral drivers for that
658 * particular device and look for a passthrough driver.
660 if (periph != NULL) {
661 struct cam_ed *device;
664 base_periph_found = 1;
665 device = periph->path->device;
666 for (i = 0, periph = SLIST_FIRST(&device->periphs);
668 periph = SLIST_NEXT(periph, periph_links), i++) {
670 * Check to see whether we have a
671 * passthrough device or not.
673 if (strcmp(periph->periph_name, "pass") == 0) {
675 * Fill in the getdevlist fields.
677 strcpy(ccb->cgdl.periph_name,
678 periph->periph_name);
679 ccb->cgdl.unit_number =
681 if (SLIST_NEXT(periph, periph_links))
683 CAM_GDEVLIST_MORE_DEVS;
686 CAM_GDEVLIST_LAST_DEVICE;
687 ccb->cgdl.generation =
691 * Fill in some CCB header fields
692 * that the user may want.
695 periph->path->bus->path_id;
696 ccb->ccb_h.target_id =
697 periph->path->target->target_id;
698 ccb->ccb_h.target_lun =
699 periph->path->device->lun_id;
700 ccb->ccb_h.status = CAM_REQ_CMP;
707 * If the periph is null here, one of two things has
708 * happened. The first possibility is that we couldn't
709 * find the unit number of the particular peripheral driver
710 * that the user is asking about. e.g. the user asks for
711 * the passthrough driver for "da11". We find the list of
712 * "da" peripherals all right, but there is no unit 11.
713 * The other possibility is that we went through the list
714 * of peripheral drivers attached to the device structure,
715 * but didn't find one with the name "pass". Either way,
716 * we return ENOENT, since we couldn't find something.
718 if (periph == NULL) {
719 ccb->ccb_h.status = CAM_REQ_CMP_ERR;
720 ccb->cgdl.status = CAM_GDEVLIST_ERROR;
721 *ccb->cgdl.periph_name = '\0';
722 ccb->cgdl.unit_number = 0;
725 * It is unfortunate that this is even necessary,
726 * but there are many, many clueless users out there.
727 * If this is true, the user is looking for the
728 * passthrough driver, but doesn't have one in his
731 if (base_periph_found == 1) {
732 printf("xptioctl: pass driver is not in the "
734 printf("xptioctl: put \"device pass\" in "
735 "your kernel config file\n");
750 cam_module_event_handler(module_t mod, int what, void *arg)
756 if ((error = xpt_init(NULL)) != 0)
769 xpt_rescan_done(struct cam_periph *periph, union ccb *done_ccb)
772 if (done_ccb->ccb_h.ppriv_ptr1 == NULL) {
773 xpt_free_path(done_ccb->ccb_h.path);
774 xpt_free_ccb(done_ccb);
776 done_ccb->ccb_h.cbfcnp = done_ccb->ccb_h.ppriv_ptr1;
777 (*done_ccb->ccb_h.cbfcnp)(periph, done_ccb);
782 /* thread to handle bus rescans */
784 xpt_scanner_thread(void *dummy)
791 if (TAILQ_EMPTY(&xsoftc.ccb_scanq))
792 msleep(&xsoftc.ccb_scanq, &xsoftc.xpt_topo_lock, PRIBIO,
794 if ((ccb = (union ccb *)TAILQ_FIRST(&xsoftc.ccb_scanq)) != NULL) {
795 TAILQ_REMOVE(&xsoftc.ccb_scanq, &ccb->ccb_h, sim_links.tqe);
798 sim = ccb->ccb_h.path->bus->sim;
809 xpt_rescan(union ccb *ccb)
813 /* Prepare request */
814 if (ccb->ccb_h.path->target->target_id == CAM_TARGET_WILDCARD &&
815 ccb->ccb_h.path->device->lun_id == CAM_LUN_WILDCARD)
816 ccb->ccb_h.func_code = XPT_SCAN_BUS;
817 else if (ccb->ccb_h.path->target->target_id != CAM_TARGET_WILDCARD &&
818 ccb->ccb_h.path->device->lun_id == CAM_LUN_WILDCARD)
819 ccb->ccb_h.func_code = XPT_SCAN_TGT;
820 else if (ccb->ccb_h.path->target->target_id != CAM_TARGET_WILDCARD &&
821 ccb->ccb_h.path->device->lun_id != CAM_LUN_WILDCARD)
822 ccb->ccb_h.func_code = XPT_SCAN_LUN;
824 xpt_print(ccb->ccb_h.path, "illegal scan path\n");
825 xpt_free_path(ccb->ccb_h.path);
829 ccb->ccb_h.ppriv_ptr1 = ccb->ccb_h.cbfcnp;
830 ccb->ccb_h.cbfcnp = xpt_rescan_done;
831 xpt_setup_ccb(&ccb->ccb_h, ccb->ccb_h.path, CAM_PRIORITY_XPT);
832 /* Don't make duplicate entries for the same paths. */
834 if (ccb->ccb_h.ppriv_ptr1 == NULL) {
835 TAILQ_FOREACH(hdr, &xsoftc.ccb_scanq, sim_links.tqe) {
836 if (xpt_path_comp(hdr->path, ccb->ccb_h.path) == 0) {
837 wakeup(&xsoftc.ccb_scanq);
839 xpt_print(ccb->ccb_h.path, "rescan already queued\n");
840 xpt_free_path(ccb->ccb_h.path);
846 TAILQ_INSERT_TAIL(&xsoftc.ccb_scanq, &ccb->ccb_h, sim_links.tqe);
847 xsoftc.buses_to_config++;
848 wakeup(&xsoftc.ccb_scanq);
852 /* Functions accessed by the peripheral drivers */
854 xpt_init(void *dummy)
856 struct cam_sim *xpt_sim;
857 struct cam_path *path;
858 struct cam_devq *devq;
861 TAILQ_INIT(&xsoftc.xpt_busses);
862 TAILQ_INIT(&cam_simq);
863 TAILQ_INIT(&xsoftc.ccb_scanq);
864 STAILQ_INIT(&xsoftc.highpowerq);
865 xsoftc.num_highpower = CAM_MAX_HIGHPOWER;
867 mtx_init(&cam_simq_lock, "CAM SIMQ lock", NULL, MTX_DEF);
868 mtx_init(&xsoftc.xpt_lock, "XPT lock", NULL, MTX_DEF);
869 mtx_init(&xsoftc.xpt_topo_lock, "XPT topology lock", NULL, MTX_DEF);
871 #ifdef CAM_BOOT_DELAY
873 * Override this value at compile time to assist our users
874 * who don't use loader to boot a kernel.
876 xsoftc.boot_delay = CAM_BOOT_DELAY;
879 * The xpt layer is, itself, the equivelent of a SIM.
880 * Allow 16 ccbs in the ccb pool for it. This should
881 * give decent parallelism when we probe busses and
882 * perform other XPT functions.
884 devq = cam_simq_alloc(16);
885 xpt_sim = cam_sim_alloc(xptaction,
890 /*mtx*/&xsoftc.xpt_lock,
891 /*max_dev_transactions*/0,
892 /*max_tagged_dev_transactions*/0,
897 mtx_lock(&xsoftc.xpt_lock);
898 if ((status = xpt_bus_register(xpt_sim, NULL, 0)) != CAM_SUCCESS) {
899 mtx_unlock(&xsoftc.xpt_lock);
900 printf("xpt_init: xpt_bus_register failed with status %#x,"
901 " failing attach\n", status);
906 * Looking at the XPT from the SIM layer, the XPT is
907 * the equivelent of a peripheral driver. Allocate
908 * a peripheral driver entry for us.
910 if ((status = xpt_create_path(&path, NULL, CAM_XPT_PATH_ID,
912 CAM_LUN_WILDCARD)) != CAM_REQ_CMP) {
913 mtx_unlock(&xsoftc.xpt_lock);
914 printf("xpt_init: xpt_create_path failed with status %#x,"
915 " failing attach\n", status);
919 cam_periph_alloc(xptregister, NULL, NULL, NULL, "xpt", CAM_PERIPH_BIO,
920 path, NULL, 0, xpt_sim);
922 mtx_unlock(&xsoftc.xpt_lock);
923 /* Install our software interrupt handlers */
924 swi_add(NULL, "cambio", camisr, NULL, SWI_CAMBIO, INTR_MPSAFE, &cambio_ih);
926 * Register a callback for when interrupts are enabled.
928 xsoftc.xpt_config_hook =
929 (struct intr_config_hook *)malloc(sizeof(struct intr_config_hook),
930 M_CAMXPT, M_NOWAIT | M_ZERO);
931 if (xsoftc.xpt_config_hook == NULL) {
932 printf("xpt_init: Cannot malloc config hook "
933 "- failing attach\n");
936 xsoftc.xpt_config_hook->ich_func = xpt_config;
937 if (config_intrhook_establish(xsoftc.xpt_config_hook) != 0) {
938 free (xsoftc.xpt_config_hook, M_CAMXPT);
939 printf("xpt_init: config_intrhook_establish failed "
940 "- failing attach\n");
947 xptregister(struct cam_periph *periph, void *arg)
949 struct cam_sim *xpt_sim;
951 if (periph == NULL) {
952 printf("xptregister: periph was NULL!!\n");
953 return(CAM_REQ_CMP_ERR);
956 xpt_sim = (struct cam_sim *)arg;
957 xpt_sim->softc = periph;
959 periph->softc = NULL;
965 xpt_add_periph(struct cam_periph *periph)
967 struct cam_ed *device;
969 struct periph_list *periph_head;
971 mtx_assert(periph->sim->mtx, MA_OWNED);
973 device = periph->path->device;
975 periph_head = &device->periphs;
977 status = CAM_REQ_CMP;
979 if (device != NULL) {
981 * Make room for this peripheral
982 * so it will fit in the queue
983 * when it's scheduled to run
985 status = camq_resize(&device->drvq,
986 device->drvq.array_size + 1);
988 device->generation++;
990 SLIST_INSERT_HEAD(periph_head, periph, periph_links);
997 xpt_remove_periph(struct cam_periph *periph)
999 struct cam_ed *device;
1001 mtx_assert(periph->sim->mtx, MA_OWNED);
1003 device = periph->path->device;
1005 if (device != NULL) {
1006 struct periph_list *periph_head;
1008 periph_head = &device->periphs;
1010 /* Release the slot for this peripheral */
1011 camq_resize(&device->drvq, device->drvq.array_size - 1);
1013 device->generation++;
1015 SLIST_REMOVE(periph_head, periph, cam_periph, periph_links);
1021 xpt_announce_periph(struct cam_periph *periph, char *announce_string)
1023 struct cam_path *path = periph->path;
1025 mtx_assert(periph->sim->mtx, MA_OWNED);
1026 periph->flags |= CAM_PERIPH_ANNOUNCED;
1028 printf("%s%d at %s%d bus %d scbus%d target %d lun %d\n",
1029 periph->periph_name, periph->unit_number,
1030 path->bus->sim->sim_name,
1031 path->bus->sim->unit_number,
1032 path->bus->sim->bus_id,
1034 path->target->target_id,
1035 path->device->lun_id);
1036 printf("%s%d: ", periph->periph_name, periph->unit_number);
1037 if (path->device->protocol == PROTO_SCSI)
1038 scsi_print_inquiry(&path->device->inq_data);
1039 else if (path->device->protocol == PROTO_ATA ||
1040 path->device->protocol == PROTO_SATAPM)
1041 ata_print_ident(&path->device->ident_data);
1042 else if (path->device->protocol == PROTO_SEMB)
1044 (struct sep_identify_data *)&path->device->ident_data);
1046 printf("Unknown protocol device\n");
1047 if (path->device->serial_num_len > 0) {
1048 /* Don't wrap the screen - print only the first 60 chars */
1049 printf("%s%d: Serial Number %.60s\n", periph->periph_name,
1050 periph->unit_number, path->device->serial_num);
1052 /* Announce transport details. */
1053 (*(path->bus->xport->announce))(periph);
1054 /* Announce command queueing. */
1055 if (path->device->inq_flags & SID_CmdQue
1056 || path->device->flags & CAM_DEV_TAG_AFTER_COUNT) {
1057 printf("%s%d: Command Queueing enabled\n",
1058 periph->periph_name, periph->unit_number);
1060 /* Announce caller's details if they've passed in. */
1061 if (announce_string != NULL)
1062 printf("%s%d: %s\n", periph->periph_name,
1063 periph->unit_number, announce_string);
1067 xpt_announce_quirks(struct cam_periph *periph, int quirks, char *bit_string)
1070 printf("%s%d: quirks=0x%b\n", periph->periph_name,
1071 periph->unit_number, quirks, bit_string);
1076 xpt_denounce_periph(struct cam_periph *periph)
1078 struct cam_path *path = periph->path;
1080 mtx_assert(periph->sim->mtx, MA_OWNED);
1081 printf("%s%d at %s%d bus %d scbus%d target %d lun %d\n",
1082 periph->periph_name, periph->unit_number,
1083 path->bus->sim->sim_name,
1084 path->bus->sim->unit_number,
1085 path->bus->sim->bus_id,
1087 path->target->target_id,
1088 path->device->lun_id);
1089 printf("%s%d: ", periph->periph_name, periph->unit_number);
1090 if (path->device->protocol == PROTO_SCSI)
1091 scsi_print_inquiry_short(&path->device->inq_data);
1092 else if (path->device->protocol == PROTO_ATA ||
1093 path->device->protocol == PROTO_SATAPM)
1094 ata_print_ident_short(&path->device->ident_data);
1095 else if (path->device->protocol == PROTO_SEMB)
1096 semb_print_ident_short(
1097 (struct sep_identify_data *)&path->device->ident_data);
1099 printf("Unknown protocol device");
1100 if (path->device->serial_num_len > 0)
1101 printf(" s/n %.60s", path->device->serial_num);
1102 printf(" detached\n");
1107 xpt_getattr(char *buf, size_t len, const char *attr, struct cam_path *path)
1110 struct ccb_dev_advinfo cdai;
1111 struct scsi_vpd_id_descriptor *idd;
1113 mtx_assert(path->bus->sim->mtx, MA_OWNED);
1115 memset(&cdai, 0, sizeof(cdai));
1116 xpt_setup_ccb(&cdai.ccb_h, path, CAM_PRIORITY_NORMAL);
1117 cdai.ccb_h.func_code = XPT_DEV_ADVINFO;
1120 if (!strcmp(attr, "GEOM::ident"))
1121 cdai.buftype = CDAI_TYPE_SERIAL_NUM;
1122 else if (!strcmp(attr, "GEOM::physpath"))
1123 cdai.buftype = CDAI_TYPE_PHYS_PATH;
1124 else if (strcmp(attr, "GEOM::lunid") == 0 ||
1125 strcmp(attr, "GEOM::lunname") == 0) {
1126 cdai.buftype = CDAI_TYPE_SCSI_DEVID;
1127 cdai.bufsiz = CAM_SCSI_DEVID_MAXLEN;
1131 cdai.buf = malloc(cdai.bufsiz, M_CAMXPT, M_NOWAIT|M_ZERO);
1132 if (cdai.buf == NULL) {
1136 xpt_action((union ccb *)&cdai); /* can only be synchronous */
1137 if ((cdai.ccb_h.status & CAM_DEV_QFRZN) != 0)
1138 cam_release_devq(cdai.ccb_h.path, 0, 0, 0, FALSE);
1139 if (cdai.provsiz == 0)
1141 if (cdai.buftype == CDAI_TYPE_SCSI_DEVID) {
1142 if (strcmp(attr, "GEOM::lunid") == 0) {
1143 idd = scsi_get_devid((struct scsi_vpd_device_id *)cdai.buf,
1144 cdai.provsiz, scsi_devid_is_lun_naa);
1146 idd = scsi_get_devid((struct scsi_vpd_device_id *)cdai.buf,
1147 cdai.provsiz, scsi_devid_is_lun_eui64);
1151 idd = scsi_get_devid((struct scsi_vpd_device_id *)cdai.buf,
1152 cdai.provsiz, scsi_devid_is_lun_t10);
1154 idd = scsi_get_devid((struct scsi_vpd_device_id *)cdai.buf,
1155 cdai.provsiz, scsi_devid_is_lun_name);
1159 if ((idd->proto_codeset & SVPD_ID_CODESET_MASK) == SVPD_ID_CODESET_ASCII ||
1160 (idd->proto_codeset & SVPD_ID_CODESET_MASK) == SVPD_ID_CODESET_UTF8) {
1161 l = strnlen(idd->identifier, idd->length);
1163 bcopy(idd->identifier, buf, l);
1168 if (idd->length * 2 < len) {
1169 for (l = 0; l < idd->length; l++)
1170 sprintf(buf + l * 2, "%02x",
1171 idd->identifier[l]);
1177 if (strlcpy(buf, cdai.buf, len) >= len)
1182 if (cdai.buf != NULL)
1183 free(cdai.buf, M_CAMXPT);
1187 static dev_match_ret
1188 xptbusmatch(struct dev_match_pattern *patterns, u_int num_patterns,
1191 dev_match_ret retval;
1194 retval = DM_RET_NONE;
1197 * If we aren't given something to match against, that's an error.
1200 return(DM_RET_ERROR);
1203 * If there are no match entries, then this bus matches no
1206 if ((patterns == NULL) || (num_patterns == 0))
1207 return(DM_RET_DESCEND | DM_RET_COPY);
1209 for (i = 0; i < num_patterns; i++) {
1210 struct bus_match_pattern *cur_pattern;
1213 * If the pattern in question isn't for a bus node, we
1214 * aren't interested. However, we do indicate to the
1215 * calling routine that we should continue descending the
1216 * tree, since the user wants to match against lower-level
1219 if (patterns[i].type != DEV_MATCH_BUS) {
1220 if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)
1221 retval |= DM_RET_DESCEND;
1225 cur_pattern = &patterns[i].pattern.bus_pattern;
1228 * If they want to match any bus node, we give them any
1231 if (cur_pattern->flags == BUS_MATCH_ANY) {
1232 /* set the copy flag */
1233 retval |= DM_RET_COPY;
1236 * If we've already decided on an action, go ahead
1239 if ((retval & DM_RET_ACTION_MASK) != DM_RET_NONE)
1244 * Not sure why someone would do this...
1246 if (cur_pattern->flags == BUS_MATCH_NONE)
1249 if (((cur_pattern->flags & BUS_MATCH_PATH) != 0)
1250 && (cur_pattern->path_id != bus->path_id))
1253 if (((cur_pattern->flags & BUS_MATCH_BUS_ID) != 0)
1254 && (cur_pattern->bus_id != bus->sim->bus_id))
1257 if (((cur_pattern->flags & BUS_MATCH_UNIT) != 0)
1258 && (cur_pattern->unit_number != bus->sim->unit_number))
1261 if (((cur_pattern->flags & BUS_MATCH_NAME) != 0)
1262 && (strncmp(cur_pattern->dev_name, bus->sim->sim_name,
1267 * If we get to this point, the user definitely wants
1268 * information on this bus. So tell the caller to copy the
1271 retval |= DM_RET_COPY;
1274 * If the return action has been set to descend, then we
1275 * know that we've already seen a non-bus matching
1276 * expression, therefore we need to further descend the tree.
1277 * This won't change by continuing around the loop, so we
1278 * go ahead and return. If we haven't seen a non-bus
1279 * matching expression, we keep going around the loop until
1280 * we exhaust the matching expressions. We'll set the stop
1281 * flag once we fall out of the loop.
1283 if ((retval & DM_RET_ACTION_MASK) == DM_RET_DESCEND)
1288 * If the return action hasn't been set to descend yet, that means
1289 * we haven't seen anything other than bus matching patterns. So
1290 * tell the caller to stop descending the tree -- the user doesn't
1291 * want to match against lower level tree elements.
1293 if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)
1294 retval |= DM_RET_STOP;
1299 static dev_match_ret
1300 xptdevicematch(struct dev_match_pattern *patterns, u_int num_patterns,
1301 struct cam_ed *device)
1303 dev_match_ret retval;
1306 retval = DM_RET_NONE;
1309 * If we aren't given something to match against, that's an error.
1312 return(DM_RET_ERROR);
1315 * If there are no match entries, then this device matches no
1318 if ((patterns == NULL) || (num_patterns == 0))
1319 return(DM_RET_DESCEND | DM_RET_COPY);
1321 for (i = 0; i < num_patterns; i++) {
1322 struct device_match_pattern *cur_pattern;
1323 struct scsi_vpd_device_id *device_id_page;
1326 * If the pattern in question isn't for a device node, we
1327 * aren't interested.
1329 if (patterns[i].type != DEV_MATCH_DEVICE) {
1330 if ((patterns[i].type == DEV_MATCH_PERIPH)
1331 && ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE))
1332 retval |= DM_RET_DESCEND;
1336 cur_pattern = &patterns[i].pattern.device_pattern;
1338 /* Error out if mutually exclusive options are specified. */
1339 if ((cur_pattern->flags & (DEV_MATCH_INQUIRY|DEV_MATCH_DEVID))
1340 == (DEV_MATCH_INQUIRY|DEV_MATCH_DEVID))
1341 return(DM_RET_ERROR);
1344 * If they want to match any device node, we give them any
1347 if (cur_pattern->flags == DEV_MATCH_ANY)
1351 * Not sure why someone would do this...
1353 if (cur_pattern->flags == DEV_MATCH_NONE)
1356 if (((cur_pattern->flags & DEV_MATCH_PATH) != 0)
1357 && (cur_pattern->path_id != device->target->bus->path_id))
1360 if (((cur_pattern->flags & DEV_MATCH_TARGET) != 0)
1361 && (cur_pattern->target_id != device->target->target_id))
1364 if (((cur_pattern->flags & DEV_MATCH_LUN) != 0)
1365 && (cur_pattern->target_lun != device->lun_id))
1368 if (((cur_pattern->flags & DEV_MATCH_INQUIRY) != 0)
1369 && (cam_quirkmatch((caddr_t)&device->inq_data,
1370 (caddr_t)&cur_pattern->data.inq_pat,
1371 1, sizeof(cur_pattern->data.inq_pat),
1372 scsi_static_inquiry_match) == NULL))
1375 device_id_page = (struct scsi_vpd_device_id *)device->device_id;
1376 if (((cur_pattern->flags & DEV_MATCH_DEVID) != 0)
1377 && (device->device_id_len < SVPD_DEVICE_ID_HDR_LEN
1378 || scsi_devid_match((uint8_t *)device_id_page->desc_list,
1379 device->device_id_len
1380 - SVPD_DEVICE_ID_HDR_LEN,
1381 cur_pattern->data.devid_pat.id,
1382 cur_pattern->data.devid_pat.id_len) != 0))
1387 * If we get to this point, the user definitely wants
1388 * information on this device. So tell the caller to copy
1391 retval |= DM_RET_COPY;
1394 * If the return action has been set to descend, then we
1395 * know that we've already seen a peripheral matching
1396 * expression, therefore we need to further descend the tree.
1397 * This won't change by continuing around the loop, so we
1398 * go ahead and return. If we haven't seen a peripheral
1399 * matching expression, we keep going around the loop until
1400 * we exhaust the matching expressions. We'll set the stop
1401 * flag once we fall out of the loop.
1403 if ((retval & DM_RET_ACTION_MASK) == DM_RET_DESCEND)
1408 * If the return action hasn't been set to descend yet, that means
1409 * we haven't seen any peripheral matching patterns. So tell the
1410 * caller to stop descending the tree -- the user doesn't want to
1411 * match against lower level tree elements.
1413 if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)
1414 retval |= DM_RET_STOP;
1420 * Match a single peripheral against any number of match patterns.
1422 static dev_match_ret
1423 xptperiphmatch(struct dev_match_pattern *patterns, u_int num_patterns,
1424 struct cam_periph *periph)
1426 dev_match_ret retval;
1430 * If we aren't given something to match against, that's an error.
1433 return(DM_RET_ERROR);
1436 * If there are no match entries, then this peripheral matches no
1439 if ((patterns == NULL) || (num_patterns == 0))
1440 return(DM_RET_STOP | DM_RET_COPY);
1443 * There aren't any nodes below a peripheral node, so there's no
1444 * reason to descend the tree any further.
1446 retval = DM_RET_STOP;
1448 for (i = 0; i < num_patterns; i++) {
1449 struct periph_match_pattern *cur_pattern;
1452 * If the pattern in question isn't for a peripheral, we
1453 * aren't interested.
1455 if (patterns[i].type != DEV_MATCH_PERIPH)
1458 cur_pattern = &patterns[i].pattern.periph_pattern;
1461 * If they want to match on anything, then we will do so.
1463 if (cur_pattern->flags == PERIPH_MATCH_ANY) {
1464 /* set the copy flag */
1465 retval |= DM_RET_COPY;
1468 * We've already set the return action to stop,
1469 * since there are no nodes below peripherals in
1476 * Not sure why someone would do this...
1478 if (cur_pattern->flags == PERIPH_MATCH_NONE)
1481 if (((cur_pattern->flags & PERIPH_MATCH_PATH) != 0)
1482 && (cur_pattern->path_id != periph->path->bus->path_id))
1486 * For the target and lun id's, we have to make sure the
1487 * target and lun pointers aren't NULL. The xpt peripheral
1488 * has a wildcard target and device.
1490 if (((cur_pattern->flags & PERIPH_MATCH_TARGET) != 0)
1491 && ((periph->path->target == NULL)
1492 ||(cur_pattern->target_id != periph->path->target->target_id)))
1495 if (((cur_pattern->flags & PERIPH_MATCH_LUN) != 0)
1496 && ((periph->path->device == NULL)
1497 || (cur_pattern->target_lun != periph->path->device->lun_id)))
1500 if (((cur_pattern->flags & PERIPH_MATCH_UNIT) != 0)
1501 && (cur_pattern->unit_number != periph->unit_number))
1504 if (((cur_pattern->flags & PERIPH_MATCH_NAME) != 0)
1505 && (strncmp(cur_pattern->periph_name, periph->periph_name,
1510 * If we get to this point, the user definitely wants
1511 * information on this peripheral. So tell the caller to
1512 * copy the data out.
1514 retval |= DM_RET_COPY;
1517 * The return action has already been set to stop, since
1518 * peripherals don't have any nodes below them in the EDT.
1524 * If we get to this point, the peripheral that was passed in
1525 * doesn't match any of the patterns.
1531 xptedtbusfunc(struct cam_eb *bus, void *arg)
1533 struct ccb_dev_match *cdm;
1534 dev_match_ret retval;
1536 cdm = (struct ccb_dev_match *)arg;
1539 * If our position is for something deeper in the tree, that means
1540 * that we've already seen this node. So, we keep going down.
1542 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
1543 && (cdm->pos.cookie.bus == bus)
1544 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
1545 && (cdm->pos.cookie.target != NULL))
1546 retval = DM_RET_DESCEND;
1548 retval = xptbusmatch(cdm->patterns, cdm->num_patterns, bus);
1551 * If we got an error, bail out of the search.
1553 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
1554 cdm->status = CAM_DEV_MATCH_ERROR;
1559 * If the copy flag is set, copy this bus out.
1561 if (retval & DM_RET_COPY) {
1564 spaceleft = cdm->match_buf_len - (cdm->num_matches *
1565 sizeof(struct dev_match_result));
1568 * If we don't have enough space to put in another
1569 * match result, save our position and tell the
1570 * user there are more devices to check.
1572 if (spaceleft < sizeof(struct dev_match_result)) {
1573 bzero(&cdm->pos, sizeof(cdm->pos));
1574 cdm->pos.position_type =
1575 CAM_DEV_POS_EDT | CAM_DEV_POS_BUS;
1577 cdm->pos.cookie.bus = bus;
1578 cdm->pos.generations[CAM_BUS_GENERATION]=
1579 xsoftc.bus_generation;
1580 cdm->status = CAM_DEV_MATCH_MORE;
1583 j = cdm->num_matches;
1585 cdm->matches[j].type = DEV_MATCH_BUS;
1586 cdm->matches[j].result.bus_result.path_id = bus->path_id;
1587 cdm->matches[j].result.bus_result.bus_id = bus->sim->bus_id;
1588 cdm->matches[j].result.bus_result.unit_number =
1589 bus->sim->unit_number;
1590 strncpy(cdm->matches[j].result.bus_result.dev_name,
1591 bus->sim->sim_name, DEV_IDLEN);
1595 * If the user is only interested in busses, there's no
1596 * reason to descend to the next level in the tree.
1598 if ((retval & DM_RET_ACTION_MASK) == DM_RET_STOP)
1602 * If there is a target generation recorded, check it to
1603 * make sure the target list hasn't changed.
1605 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
1606 && (bus == cdm->pos.cookie.bus)
1607 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
1608 && (cdm->pos.generations[CAM_TARGET_GENERATION] != 0)
1609 && (cdm->pos.generations[CAM_TARGET_GENERATION] !=
1611 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
1615 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
1616 && (cdm->pos.cookie.bus == bus)
1617 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
1618 && (cdm->pos.cookie.target != NULL))
1619 return(xpttargettraverse(bus,
1620 (struct cam_et *)cdm->pos.cookie.target,
1621 xptedttargetfunc, arg));
1623 return(xpttargettraverse(bus, NULL, xptedttargetfunc, arg));
1627 xptedttargetfunc(struct cam_et *target, void *arg)
1629 struct ccb_dev_match *cdm;
1631 cdm = (struct ccb_dev_match *)arg;
1634 * If there is a device list generation recorded, check it to
1635 * make sure the device list hasn't changed.
1637 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
1638 && (cdm->pos.cookie.bus == target->bus)
1639 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
1640 && (cdm->pos.cookie.target == target)
1641 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
1642 && (cdm->pos.generations[CAM_DEV_GENERATION] != 0)
1643 && (cdm->pos.generations[CAM_DEV_GENERATION] !=
1644 target->generation)) {
1645 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
1649 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
1650 && (cdm->pos.cookie.bus == target->bus)
1651 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
1652 && (cdm->pos.cookie.target == target)
1653 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
1654 && (cdm->pos.cookie.device != NULL))
1655 return(xptdevicetraverse(target,
1656 (struct cam_ed *)cdm->pos.cookie.device,
1657 xptedtdevicefunc, arg));
1659 return(xptdevicetraverse(target, NULL, xptedtdevicefunc, arg));
1663 xptedtdevicefunc(struct cam_ed *device, void *arg)
1666 struct ccb_dev_match *cdm;
1667 dev_match_ret retval;
1669 cdm = (struct ccb_dev_match *)arg;
1672 * If our position is for something deeper in the tree, that means
1673 * that we've already seen this node. So, we keep going down.
1675 if ((cdm->pos.position_type & CAM_DEV_POS_DEVICE)
1676 && (cdm->pos.cookie.device == device)
1677 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
1678 && (cdm->pos.cookie.periph != NULL))
1679 retval = DM_RET_DESCEND;
1681 retval = xptdevicematch(cdm->patterns, cdm->num_patterns,
1684 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
1685 cdm->status = CAM_DEV_MATCH_ERROR;
1690 * If the copy flag is set, copy this device out.
1692 if (retval & DM_RET_COPY) {
1695 spaceleft = cdm->match_buf_len - (cdm->num_matches *
1696 sizeof(struct dev_match_result));
1699 * If we don't have enough space to put in another
1700 * match result, save our position and tell the
1701 * user there are more devices to check.
1703 if (spaceleft < sizeof(struct dev_match_result)) {
1704 bzero(&cdm->pos, sizeof(cdm->pos));
1705 cdm->pos.position_type =
1706 CAM_DEV_POS_EDT | CAM_DEV_POS_BUS |
1707 CAM_DEV_POS_TARGET | CAM_DEV_POS_DEVICE;
1709 cdm->pos.cookie.bus = device->target->bus;
1710 cdm->pos.generations[CAM_BUS_GENERATION]=
1711 xsoftc.bus_generation;
1712 cdm->pos.cookie.target = device->target;
1713 cdm->pos.generations[CAM_TARGET_GENERATION] =
1714 device->target->bus->generation;
1715 cdm->pos.cookie.device = device;
1716 cdm->pos.generations[CAM_DEV_GENERATION] =
1717 device->target->generation;
1718 cdm->status = CAM_DEV_MATCH_MORE;
1721 j = cdm->num_matches;
1723 cdm->matches[j].type = DEV_MATCH_DEVICE;
1724 cdm->matches[j].result.device_result.path_id =
1725 device->target->bus->path_id;
1726 cdm->matches[j].result.device_result.target_id =
1727 device->target->target_id;
1728 cdm->matches[j].result.device_result.target_lun =
1730 cdm->matches[j].result.device_result.protocol =
1732 bcopy(&device->inq_data,
1733 &cdm->matches[j].result.device_result.inq_data,
1734 sizeof(struct scsi_inquiry_data));
1735 bcopy(&device->ident_data,
1736 &cdm->matches[j].result.device_result.ident_data,
1737 sizeof(struct ata_params));
1739 /* Let the user know whether this device is unconfigured */
1740 if (device->flags & CAM_DEV_UNCONFIGURED)
1741 cdm->matches[j].result.device_result.flags =
1742 DEV_RESULT_UNCONFIGURED;
1744 cdm->matches[j].result.device_result.flags =
1749 * If the user isn't interested in peripherals, don't descend
1750 * the tree any further.
1752 if ((retval & DM_RET_ACTION_MASK) == DM_RET_STOP)
1756 * If there is a peripheral list generation recorded, make sure
1757 * it hasn't changed.
1759 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
1760 && (device->target->bus == cdm->pos.cookie.bus)
1761 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
1762 && (device->target == cdm->pos.cookie.target)
1763 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
1764 && (device == cdm->pos.cookie.device)
1765 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
1766 && (cdm->pos.generations[CAM_PERIPH_GENERATION] != 0)
1767 && (cdm->pos.generations[CAM_PERIPH_GENERATION] !=
1768 device->generation)){
1769 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
1773 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
1774 && (cdm->pos.cookie.bus == device->target->bus)
1775 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
1776 && (cdm->pos.cookie.target == device->target)
1777 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
1778 && (cdm->pos.cookie.device == device)
1779 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
1780 && (cdm->pos.cookie.periph != NULL))
1781 return(xptperiphtraverse(device,
1782 (struct cam_periph *)cdm->pos.cookie.periph,
1783 xptedtperiphfunc, arg));
1785 return(xptperiphtraverse(device, NULL, xptedtperiphfunc, arg));
1789 xptedtperiphfunc(struct cam_periph *periph, void *arg)
1791 struct ccb_dev_match *cdm;
1792 dev_match_ret retval;
1794 cdm = (struct ccb_dev_match *)arg;
1796 retval = xptperiphmatch(cdm->patterns, cdm->num_patterns, periph);
1798 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
1799 cdm->status = CAM_DEV_MATCH_ERROR;
1804 * If the copy flag is set, copy this peripheral out.
1806 if (retval & DM_RET_COPY) {
1809 spaceleft = cdm->match_buf_len - (cdm->num_matches *
1810 sizeof(struct dev_match_result));
1813 * If we don't have enough space to put in another
1814 * match result, save our position and tell the
1815 * user there are more devices to check.
1817 if (spaceleft < sizeof(struct dev_match_result)) {
1818 bzero(&cdm->pos, sizeof(cdm->pos));
1819 cdm->pos.position_type =
1820 CAM_DEV_POS_EDT | CAM_DEV_POS_BUS |
1821 CAM_DEV_POS_TARGET | CAM_DEV_POS_DEVICE |
1824 cdm->pos.cookie.bus = periph->path->bus;
1825 cdm->pos.generations[CAM_BUS_GENERATION]=
1826 xsoftc.bus_generation;
1827 cdm->pos.cookie.target = periph->path->target;
1828 cdm->pos.generations[CAM_TARGET_GENERATION] =
1829 periph->path->bus->generation;
1830 cdm->pos.cookie.device = periph->path->device;
1831 cdm->pos.generations[CAM_DEV_GENERATION] =
1832 periph->path->target->generation;
1833 cdm->pos.cookie.periph = periph;
1834 cdm->pos.generations[CAM_PERIPH_GENERATION] =
1835 periph->path->device->generation;
1836 cdm->status = CAM_DEV_MATCH_MORE;
1840 j = cdm->num_matches;
1842 cdm->matches[j].type = DEV_MATCH_PERIPH;
1843 cdm->matches[j].result.periph_result.path_id =
1844 periph->path->bus->path_id;
1845 cdm->matches[j].result.periph_result.target_id =
1846 periph->path->target->target_id;
1847 cdm->matches[j].result.periph_result.target_lun =
1848 periph->path->device->lun_id;
1849 cdm->matches[j].result.periph_result.unit_number =
1850 periph->unit_number;
1851 strncpy(cdm->matches[j].result.periph_result.periph_name,
1852 periph->periph_name, DEV_IDLEN);
1859 xptedtmatch(struct ccb_dev_match *cdm)
1863 cdm->num_matches = 0;
1866 * Check the bus list generation. If it has changed, the user
1867 * needs to reset everything and start over.
1869 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
1870 && (cdm->pos.generations[CAM_BUS_GENERATION] != 0)
1871 && (cdm->pos.generations[CAM_BUS_GENERATION] != xsoftc.bus_generation)) {
1872 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
1876 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
1877 && (cdm->pos.cookie.bus != NULL))
1878 ret = xptbustraverse((struct cam_eb *)cdm->pos.cookie.bus,
1879 xptedtbusfunc, cdm);
1881 ret = xptbustraverse(NULL, xptedtbusfunc, cdm);
1884 * If we get back 0, that means that we had to stop before fully
1885 * traversing the EDT. It also means that one of the subroutines
1886 * has set the status field to the proper value. If we get back 1,
1887 * we've fully traversed the EDT and copied out any matching entries.
1890 cdm->status = CAM_DEV_MATCH_LAST;
1896 xptplistpdrvfunc(struct periph_driver **pdrv, void *arg)
1898 struct ccb_dev_match *cdm;
1900 cdm = (struct ccb_dev_match *)arg;
1902 if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR)
1903 && (cdm->pos.cookie.pdrv == pdrv)
1904 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
1905 && (cdm->pos.generations[CAM_PERIPH_GENERATION] != 0)
1906 && (cdm->pos.generations[CAM_PERIPH_GENERATION] !=
1907 (*pdrv)->generation)) {
1908 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
1912 if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR)
1913 && (cdm->pos.cookie.pdrv == pdrv)
1914 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
1915 && (cdm->pos.cookie.periph != NULL))
1916 return(xptpdperiphtraverse(pdrv,
1917 (struct cam_periph *)cdm->pos.cookie.periph,
1918 xptplistperiphfunc, arg));
1920 return(xptpdperiphtraverse(pdrv, NULL,xptplistperiphfunc, arg));
1924 xptplistperiphfunc(struct cam_periph *periph, void *arg)
1926 struct ccb_dev_match *cdm;
1927 dev_match_ret retval;
1929 cdm = (struct ccb_dev_match *)arg;
1931 retval = xptperiphmatch(cdm->patterns, cdm->num_patterns, periph);
1933 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
1934 cdm->status = CAM_DEV_MATCH_ERROR;
1939 * If the copy flag is set, copy this peripheral out.
1941 if (retval & DM_RET_COPY) {
1944 spaceleft = cdm->match_buf_len - (cdm->num_matches *
1945 sizeof(struct dev_match_result));
1948 * If we don't have enough space to put in another
1949 * match result, save our position and tell the
1950 * user there are more devices to check.
1952 if (spaceleft < sizeof(struct dev_match_result)) {
1953 struct periph_driver **pdrv;
1956 bzero(&cdm->pos, sizeof(cdm->pos));
1957 cdm->pos.position_type =
1958 CAM_DEV_POS_PDRV | CAM_DEV_POS_PDPTR |
1962 * This may look a bit non-sensical, but it is
1963 * actually quite logical. There are very few
1964 * peripheral drivers, and bloating every peripheral
1965 * structure with a pointer back to its parent
1966 * peripheral driver linker set entry would cost
1967 * more in the long run than doing this quick lookup.
1969 for (pdrv = periph_drivers; *pdrv != NULL; pdrv++) {
1970 if (strcmp((*pdrv)->driver_name,
1971 periph->periph_name) == 0)
1975 if (*pdrv == NULL) {
1976 cdm->status = CAM_DEV_MATCH_ERROR;
1980 cdm->pos.cookie.pdrv = pdrv;
1982 * The periph generation slot does double duty, as
1983 * does the periph pointer slot. They are used for
1984 * both edt and pdrv lookups and positioning.
1986 cdm->pos.cookie.periph = periph;
1987 cdm->pos.generations[CAM_PERIPH_GENERATION] =
1988 (*pdrv)->generation;
1989 cdm->status = CAM_DEV_MATCH_MORE;
1993 j = cdm->num_matches;
1995 cdm->matches[j].type = DEV_MATCH_PERIPH;
1996 cdm->matches[j].result.periph_result.path_id =
1997 periph->path->bus->path_id;
2000 * The transport layer peripheral doesn't have a target or
2003 if (periph->path->target)
2004 cdm->matches[j].result.periph_result.target_id =
2005 periph->path->target->target_id;
2007 cdm->matches[j].result.periph_result.target_id = -1;
2009 if (periph->path->device)
2010 cdm->matches[j].result.periph_result.target_lun =
2011 periph->path->device->lun_id;
2013 cdm->matches[j].result.periph_result.target_lun = -1;
2015 cdm->matches[j].result.periph_result.unit_number =
2016 periph->unit_number;
2017 strncpy(cdm->matches[j].result.periph_result.periph_name,
2018 periph->periph_name, DEV_IDLEN);
2025 xptperiphlistmatch(struct ccb_dev_match *cdm)
2029 cdm->num_matches = 0;
2032 * At this point in the edt traversal function, we check the bus
2033 * list generation to make sure that no busses have been added or
2034 * removed since the user last sent a XPT_DEV_MATCH ccb through.
2035 * For the peripheral driver list traversal function, however, we
2036 * don't have to worry about new peripheral driver types coming or
2037 * going; they're in a linker set, and therefore can't change
2038 * without a recompile.
2041 if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR)
2042 && (cdm->pos.cookie.pdrv != NULL))
2043 ret = xptpdrvtraverse(
2044 (struct periph_driver **)cdm->pos.cookie.pdrv,
2045 xptplistpdrvfunc, cdm);
2047 ret = xptpdrvtraverse(NULL, xptplistpdrvfunc, cdm);
2050 * If we get back 0, that means that we had to stop before fully
2051 * traversing the peripheral driver tree. It also means that one of
2052 * the subroutines has set the status field to the proper value. If
2053 * we get back 1, we've fully traversed the EDT and copied out any
2057 cdm->status = CAM_DEV_MATCH_LAST;
2063 xptbustraverse(struct cam_eb *start_bus, xpt_busfunc_t *tr_func, void *arg)
2065 struct cam_eb *bus, *next_bus;
2071 for (bus = (start_bus ? start_bus : TAILQ_FIRST(&xsoftc.xpt_busses));
2078 * XXX The locking here is obviously very complex. We
2079 * should work to simplify it.
2082 CAM_SIM_LOCK(bus->sim);
2083 retval = tr_func(bus, arg);
2084 CAM_SIM_UNLOCK(bus->sim);
2087 next_bus = TAILQ_NEXT(bus, links);
2090 xpt_release_bus(bus);
2102 xpttargettraverse(struct cam_eb *bus, struct cam_et *start_target,
2103 xpt_targetfunc_t *tr_func, void *arg)
2105 struct cam_et *target, *next_target;
2108 mtx_assert(bus->sim->mtx, MA_OWNED);
2110 for (target = (start_target ? start_target :
2111 TAILQ_FIRST(&bus->et_entries));
2112 target != NULL; target = next_target) {
2116 retval = tr_func(target, arg);
2118 next_target = TAILQ_NEXT(target, links);
2120 xpt_release_target(target);
2130 xptdevicetraverse(struct cam_et *target, struct cam_ed *start_device,
2131 xpt_devicefunc_t *tr_func, void *arg)
2133 struct cam_ed *device, *next_device;
2136 mtx_assert(target->bus->sim->mtx, MA_OWNED);
2138 for (device = (start_device ? start_device :
2139 TAILQ_FIRST(&target->ed_entries));
2141 device = next_device) {
2144 * Hold a reference so the current device does not go away
2149 retval = tr_func(device, arg);
2152 * Grab our next pointer before we release the current
2155 next_device = TAILQ_NEXT(device, links);
2157 xpt_release_device(device);
2167 xptperiphtraverse(struct cam_ed *device, struct cam_periph *start_periph,
2168 xpt_periphfunc_t *tr_func, void *arg)
2170 struct cam_periph *periph, *next_periph;
2175 mtx_assert(device->sim->mtx, MA_OWNED);
2177 for (periph = (start_periph ? start_periph :
2178 SLIST_FIRST(&device->periphs));
2180 periph = next_periph) {
2184 * In this case, we want to show peripherals that have been
2185 * invalidated, but not peripherals that are scheduled to
2186 * be freed. So instead of calling cam_periph_acquire(),
2187 * which will fail if the periph has been invalidated, we
2188 * just check for the free flag here. If it is in the
2189 * process of being freed, we skip to the next periph.
2191 if (periph->flags & CAM_PERIPH_FREE) {
2192 next_periph = SLIST_NEXT(periph, periph_links);
2197 * Acquire a reference to this periph while we call the
2198 * traversal function, so it can't go away.
2202 retval = tr_func(periph, arg);
2205 * Grab the next peripheral before we release this one, so
2206 * our next pointer is still valid.
2208 next_periph = SLIST_NEXT(periph, periph_links);
2210 cam_periph_release_locked_buses(periph);
2224 xptpdrvtraverse(struct periph_driver **start_pdrv,
2225 xpt_pdrvfunc_t *tr_func, void *arg)
2227 struct periph_driver **pdrv;
2233 * We don't traverse the peripheral driver list like we do the
2234 * other lists, because it is a linker set, and therefore cannot be
2235 * changed during runtime. If the peripheral driver list is ever
2236 * re-done to be something other than a linker set (i.e. it can
2237 * change while the system is running), the list traversal should
2238 * be modified to work like the other traversal functions.
2240 for (pdrv = (start_pdrv ? start_pdrv : periph_drivers);
2241 *pdrv != NULL; pdrv++) {
2242 retval = tr_func(pdrv, arg);
2252 xptpdperiphtraverse(struct periph_driver **pdrv,
2253 struct cam_periph *start_periph,
2254 xpt_periphfunc_t *tr_func, void *arg)
2256 struct cam_periph *periph, *next_periph;
2257 struct cam_sim *sim;
2263 for (periph = (start_periph ? start_periph :
2264 TAILQ_FIRST(&(*pdrv)->units)); periph != NULL;
2265 periph = next_periph) {
2269 * In this case, we want to show peripherals that have been
2270 * invalidated, but not peripherals that are scheduled to
2271 * be freed. So instead of calling cam_periph_acquire(),
2272 * which will fail if the periph has been invalidated, we
2273 * just check for the free flag here. If it is free, we
2274 * skip to the next periph.
2276 if (periph->flags & CAM_PERIPH_FREE) {
2277 next_periph = TAILQ_NEXT(periph, unit_links);
2282 * Acquire a reference to this periph while we call the
2283 * traversal function, so it can't go away.
2290 retval = tr_func(periph, arg);
2293 * Grab the next peripheral before we release this one, so
2294 * our next pointer is still valid.
2296 next_periph = TAILQ_NEXT(periph, unit_links);
2298 cam_periph_release_locked_buses(periph);
2299 CAM_SIM_UNLOCK(sim);
2312 xptdefbusfunc(struct cam_eb *bus, void *arg)
2314 struct xpt_traverse_config *tr_config;
2316 tr_config = (struct xpt_traverse_config *)arg;
2318 if (tr_config->depth == XPT_DEPTH_BUS) {
2319 xpt_busfunc_t *tr_func;
2321 tr_func = (xpt_busfunc_t *)tr_config->tr_func;
2323 return(tr_func(bus, tr_config->tr_arg));
2325 return(xpttargettraverse(bus, NULL, xptdeftargetfunc, arg));
2329 xptdeftargetfunc(struct cam_et *target, void *arg)
2331 struct xpt_traverse_config *tr_config;
2333 tr_config = (struct xpt_traverse_config *)arg;
2335 if (tr_config->depth == XPT_DEPTH_TARGET) {
2336 xpt_targetfunc_t *tr_func;
2338 tr_func = (xpt_targetfunc_t *)tr_config->tr_func;
2340 return(tr_func(target, tr_config->tr_arg));
2342 return(xptdevicetraverse(target, NULL, xptdefdevicefunc, arg));
2346 xptdefdevicefunc(struct cam_ed *device, void *arg)
2348 struct xpt_traverse_config *tr_config;
2350 tr_config = (struct xpt_traverse_config *)arg;
2352 if (tr_config->depth == XPT_DEPTH_DEVICE) {
2353 xpt_devicefunc_t *tr_func;
2355 tr_func = (xpt_devicefunc_t *)tr_config->tr_func;
2357 return(tr_func(device, tr_config->tr_arg));
2359 return(xptperiphtraverse(device, NULL, xptdefperiphfunc, arg));
2363 xptdefperiphfunc(struct cam_periph *periph, void *arg)
2365 struct xpt_traverse_config *tr_config;
2366 xpt_periphfunc_t *tr_func;
2368 tr_config = (struct xpt_traverse_config *)arg;
2370 tr_func = (xpt_periphfunc_t *)tr_config->tr_func;
2373 * Unlike the other default functions, we don't check for depth
2374 * here. The peripheral driver level is the last level in the EDT,
2375 * so if we're here, we should execute the function in question.
2377 return(tr_func(periph, tr_config->tr_arg));
2381 * Execute the given function for every bus in the EDT.
2384 xpt_for_all_busses(xpt_busfunc_t *tr_func, void *arg)
2386 struct xpt_traverse_config tr_config;
2388 tr_config.depth = XPT_DEPTH_BUS;
2389 tr_config.tr_func = tr_func;
2390 tr_config.tr_arg = arg;
2392 return(xptbustraverse(NULL, xptdefbusfunc, &tr_config));
2396 * Execute the given function for every device in the EDT.
2399 xpt_for_all_devices(xpt_devicefunc_t *tr_func, void *arg)
2401 struct xpt_traverse_config tr_config;
2403 tr_config.depth = XPT_DEPTH_DEVICE;
2404 tr_config.tr_func = tr_func;
2405 tr_config.tr_arg = arg;
2407 return(xptbustraverse(NULL, xptdefbusfunc, &tr_config));
2411 xptsetasyncfunc(struct cam_ed *device, void *arg)
2413 struct cam_path path;
2414 struct ccb_getdev cgd;
2415 struct ccb_setasync *csa = (struct ccb_setasync *)arg;
2418 * Don't report unconfigured devices (Wildcard devs,
2419 * devices only for target mode, device instances
2420 * that have been invalidated but are waiting for
2421 * their last reference count to be released).
2423 if ((device->flags & CAM_DEV_UNCONFIGURED) != 0)
2426 xpt_compile_path(&path,
2428 device->target->bus->path_id,
2429 device->target->target_id,
2431 xpt_setup_ccb(&cgd.ccb_h, &path, CAM_PRIORITY_NORMAL);
2432 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
2433 xpt_action((union ccb *)&cgd);
2434 csa->callback(csa->callback_arg,
2437 xpt_release_path(&path);
2443 xptsetasyncbusfunc(struct cam_eb *bus, void *arg)
2445 struct cam_path path;
2446 struct ccb_pathinq cpi;
2447 struct ccb_setasync *csa = (struct ccb_setasync *)arg;
2449 xpt_compile_path(&path, /*periph*/NULL,
2451 CAM_TARGET_WILDCARD,
2453 xpt_setup_ccb(&cpi.ccb_h, &path, CAM_PRIORITY_NORMAL);
2454 cpi.ccb_h.func_code = XPT_PATH_INQ;
2455 xpt_action((union ccb *)&cpi);
2456 csa->callback(csa->callback_arg,
2459 xpt_release_path(&path);
2465 xpt_action(union ccb *start_ccb)
2468 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("xpt_action\n"));
2470 start_ccb->ccb_h.status = CAM_REQ_INPROG;
2471 (*(start_ccb->ccb_h.path->bus->xport->action))(start_ccb);
2475 xpt_action_default(union ccb *start_ccb)
2477 struct cam_path *path;
2479 path = start_ccb->ccb_h.path;
2480 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_action_default\n"));
2482 switch (start_ccb->ccb_h.func_code) {
2485 struct cam_ed *device;
2488 * For the sake of compatibility with SCSI-1
2489 * devices that may not understand the identify
2490 * message, we include lun information in the
2491 * second byte of all commands. SCSI-1 specifies
2492 * that luns are a 3 bit value and reserves only 3
2493 * bits for lun information in the CDB. Later
2494 * revisions of the SCSI spec allow for more than 8
2495 * luns, but have deprecated lun information in the
2496 * CDB. So, if the lun won't fit, we must omit.
2498 * Also be aware that during initial probing for devices,
2499 * the inquiry information is unknown but initialized to 0.
2500 * This means that this code will be exercised while probing
2501 * devices with an ANSI revision greater than 2.
2503 device = path->device;
2504 if (device->protocol_version <= SCSI_REV_2
2505 && start_ccb->ccb_h.target_lun < 8
2506 && (start_ccb->ccb_h.flags & CAM_CDB_POINTER) == 0) {
2508 start_ccb->csio.cdb_io.cdb_bytes[1] |=
2509 start_ccb->ccb_h.target_lun << 5;
2511 start_ccb->csio.scsi_status = SCSI_STATUS_OK;
2515 case XPT_CONT_TARGET_IO:
2516 start_ccb->csio.sense_resid = 0;
2517 start_ccb->csio.resid = 0;
2520 if (start_ccb->ccb_h.func_code == XPT_ATA_IO)
2521 start_ccb->ataio.resid = 0;
2526 cam_ccbq_insert_ccb(&path->device->ccbq, start_ccb);
2527 if (xpt_schedule_devq(path->bus->sim->devq, path->device))
2528 xpt_run_devq(path->bus->sim->devq);
2530 case XPT_CALC_GEOMETRY:
2532 struct cam_sim *sim;
2534 /* Filter out garbage */
2535 if (start_ccb->ccg.block_size == 0
2536 || start_ccb->ccg.volume_size == 0) {
2537 start_ccb->ccg.cylinders = 0;
2538 start_ccb->ccg.heads = 0;
2539 start_ccb->ccg.secs_per_track = 0;
2540 start_ccb->ccb_h.status = CAM_REQ_CMP;
2543 #if defined(PC98) || defined(__sparc64__)
2545 * In a PC-98 system, geometry translation depens on
2546 * the "real" device geometry obtained from mode page 4.
2547 * SCSI geometry translation is performed in the
2548 * initialization routine of the SCSI BIOS and the result
2549 * stored in host memory. If the translation is available
2550 * in host memory, use it. If not, rely on the default
2551 * translation the device driver performs.
2552 * For sparc64, we may need adjust the geometry of large
2553 * disks in order to fit the limitations of the 16-bit
2554 * fields of the VTOC8 disk label.
2556 if (scsi_da_bios_params(&start_ccb->ccg) != 0) {
2557 start_ccb->ccb_h.status = CAM_REQ_CMP;
2561 sim = path->bus->sim;
2562 (*(sim->sim_action))(sim, start_ccb);
2567 union ccb* abort_ccb;
2569 abort_ccb = start_ccb->cab.abort_ccb;
2570 if (XPT_FC_IS_DEV_QUEUED(abort_ccb)) {
2572 if (abort_ccb->ccb_h.pinfo.index >= 0) {
2573 struct cam_ccbq *ccbq;
2574 struct cam_ed *device;
2576 device = abort_ccb->ccb_h.path->device;
2577 ccbq = &device->ccbq;
2578 cam_ccbq_remove_ccb(ccbq, abort_ccb);
2579 abort_ccb->ccb_h.status =
2580 CAM_REQ_ABORTED|CAM_DEV_QFRZN;
2581 xpt_freeze_devq(abort_ccb->ccb_h.path, 1);
2582 xpt_done(abort_ccb);
2583 start_ccb->ccb_h.status = CAM_REQ_CMP;
2586 if (abort_ccb->ccb_h.pinfo.index == CAM_UNQUEUED_INDEX
2587 && (abort_ccb->ccb_h.status & CAM_SIM_QUEUED) == 0) {
2589 * We've caught this ccb en route to
2590 * the SIM. Flag it for abort and the
2591 * SIM will do so just before starting
2592 * real work on the CCB.
2594 abort_ccb->ccb_h.status =
2595 CAM_REQ_ABORTED|CAM_DEV_QFRZN;
2596 xpt_freeze_devq(abort_ccb->ccb_h.path, 1);
2597 start_ccb->ccb_h.status = CAM_REQ_CMP;
2601 if (XPT_FC_IS_QUEUED(abort_ccb)
2602 && (abort_ccb->ccb_h.pinfo.index == CAM_DONEQ_INDEX)) {
2604 * It's already completed but waiting
2605 * for our SWI to get to it.
2607 start_ccb->ccb_h.status = CAM_UA_ABORT;
2611 * If we weren't able to take care of the abort request
2612 * in the XPT, pass the request down to the SIM for processing.
2616 case XPT_ACCEPT_TARGET_IO:
2618 case XPT_IMMED_NOTIFY:
2619 case XPT_NOTIFY_ACK:
2621 case XPT_IMMEDIATE_NOTIFY:
2622 case XPT_NOTIFY_ACKNOWLEDGE:
2623 case XPT_GET_SIM_KNOB:
2624 case XPT_SET_SIM_KNOB:
2626 struct cam_sim *sim;
2628 sim = path->bus->sim;
2629 (*(sim->sim_action))(sim, start_ccb);
2634 struct cam_sim *sim;
2636 sim = path->bus->sim;
2637 (*(sim->sim_action))(sim, start_ccb);
2640 case XPT_PATH_STATS:
2641 start_ccb->cpis.last_reset = path->bus->last_reset;
2642 start_ccb->ccb_h.status = CAM_REQ_CMP;
2649 if ((dev->flags & CAM_DEV_UNCONFIGURED) != 0) {
2650 start_ccb->ccb_h.status = CAM_DEV_NOT_THERE;
2652 struct ccb_getdev *cgd;
2654 cgd = &start_ccb->cgd;
2655 cgd->protocol = dev->protocol;
2656 cgd->inq_data = dev->inq_data;
2657 cgd->ident_data = dev->ident_data;
2658 cgd->inq_flags = dev->inq_flags;
2659 cgd->ccb_h.status = CAM_REQ_CMP;
2660 cgd->serial_num_len = dev->serial_num_len;
2661 if ((dev->serial_num_len > 0)
2662 && (dev->serial_num != NULL))
2663 bcopy(dev->serial_num, cgd->serial_num,
2664 dev->serial_num_len);
2668 case XPT_GDEV_STATS:
2673 if ((dev->flags & CAM_DEV_UNCONFIGURED) != 0) {
2674 start_ccb->ccb_h.status = CAM_DEV_NOT_THERE;
2676 struct ccb_getdevstats *cgds;
2680 cgds = &start_ccb->cgds;
2683 cgds->dev_openings = dev->ccbq.dev_openings;
2684 cgds->dev_active = dev->ccbq.dev_active;
2685 cgds->devq_openings = dev->ccbq.devq_openings;
2686 cgds->devq_queued = cam_ccbq_pending_ccb_count(&dev->ccbq);
2687 cgds->held = dev->ccbq.held;
2688 cgds->last_reset = tar->last_reset;
2689 cgds->maxtags = dev->maxtags;
2690 cgds->mintags = dev->mintags;
2691 if (timevalcmp(&tar->last_reset, &bus->last_reset, <))
2692 cgds->last_reset = bus->last_reset;
2693 cgds->ccb_h.status = CAM_REQ_CMP;
2699 struct cam_periph *nperiph;
2700 struct periph_list *periph_head;
2701 struct ccb_getdevlist *cgdl;
2703 struct cam_ed *device;
2710 * Don't want anyone mucking with our data.
2712 device = path->device;
2713 periph_head = &device->periphs;
2714 cgdl = &start_ccb->cgdl;
2717 * Check and see if the list has changed since the user
2718 * last requested a list member. If so, tell them that the
2719 * list has changed, and therefore they need to start over
2720 * from the beginning.
2722 if ((cgdl->index != 0) &&
2723 (cgdl->generation != device->generation)) {
2724 cgdl->status = CAM_GDEVLIST_LIST_CHANGED;
2729 * Traverse the list of peripherals and attempt to find
2730 * the requested peripheral.
2732 for (nperiph = SLIST_FIRST(periph_head), i = 0;
2733 (nperiph != NULL) && (i <= cgdl->index);
2734 nperiph = SLIST_NEXT(nperiph, periph_links), i++) {
2735 if (i == cgdl->index) {
2736 strncpy(cgdl->periph_name,
2737 nperiph->periph_name,
2739 cgdl->unit_number = nperiph->unit_number;
2744 cgdl->status = CAM_GDEVLIST_ERROR;
2748 if (nperiph == NULL)
2749 cgdl->status = CAM_GDEVLIST_LAST_DEVICE;
2751 cgdl->status = CAM_GDEVLIST_MORE_DEVS;
2754 cgdl->generation = device->generation;
2756 cgdl->ccb_h.status = CAM_REQ_CMP;
2761 dev_pos_type position_type;
2762 struct ccb_dev_match *cdm;
2764 cdm = &start_ccb->cdm;
2767 * There are two ways of getting at information in the EDT.
2768 * The first way is via the primary EDT tree. It starts
2769 * with a list of busses, then a list of targets on a bus,
2770 * then devices/luns on a target, and then peripherals on a
2771 * device/lun. The "other" way is by the peripheral driver
2772 * lists. The peripheral driver lists are organized by
2773 * peripheral driver. (obviously) So it makes sense to
2774 * use the peripheral driver list if the user is looking
2775 * for something like "da1", or all "da" devices. If the
2776 * user is looking for something on a particular bus/target
2777 * or lun, it's generally better to go through the EDT tree.
2780 if (cdm->pos.position_type != CAM_DEV_POS_NONE)
2781 position_type = cdm->pos.position_type;
2785 position_type = CAM_DEV_POS_NONE;
2787 for (i = 0; i < cdm->num_patterns; i++) {
2788 if ((cdm->patterns[i].type == DEV_MATCH_BUS)
2789 ||(cdm->patterns[i].type == DEV_MATCH_DEVICE)){
2790 position_type = CAM_DEV_POS_EDT;
2795 if (cdm->num_patterns == 0)
2796 position_type = CAM_DEV_POS_EDT;
2797 else if (position_type == CAM_DEV_POS_NONE)
2798 position_type = CAM_DEV_POS_PDRV;
2802 * Note that we drop the SIM lock here, because the EDT
2803 * traversal code needs to do its own locking.
2805 CAM_SIM_UNLOCK(xpt_path_sim(cdm->ccb_h.path));
2806 switch(position_type & CAM_DEV_POS_TYPEMASK) {
2807 case CAM_DEV_POS_EDT:
2810 case CAM_DEV_POS_PDRV:
2811 xptperiphlistmatch(cdm);
2814 cdm->status = CAM_DEV_MATCH_ERROR;
2817 CAM_SIM_LOCK(xpt_path_sim(cdm->ccb_h.path));
2819 if (cdm->status == CAM_DEV_MATCH_ERROR)
2820 start_ccb->ccb_h.status = CAM_REQ_CMP_ERR;
2822 start_ccb->ccb_h.status = CAM_REQ_CMP;
2828 struct ccb_setasync *csa;
2829 struct async_node *cur_entry;
2830 struct async_list *async_head;
2833 csa = &start_ccb->csa;
2834 added = csa->event_enable;
2835 async_head = &path->device->asyncs;
2838 * If there is already an entry for us, simply
2841 cur_entry = SLIST_FIRST(async_head);
2842 while (cur_entry != NULL) {
2843 if ((cur_entry->callback_arg == csa->callback_arg)
2844 && (cur_entry->callback == csa->callback))
2846 cur_entry = SLIST_NEXT(cur_entry, links);
2849 if (cur_entry != NULL) {
2851 * If the request has no flags set,
2854 added &= ~cur_entry->event_enable;
2855 if (csa->event_enable == 0) {
2856 SLIST_REMOVE(async_head, cur_entry,
2858 xpt_release_device(path->device);
2859 free(cur_entry, M_CAMXPT);
2861 cur_entry->event_enable = csa->event_enable;
2863 csa->event_enable = added;
2865 cur_entry = malloc(sizeof(*cur_entry), M_CAMXPT,
2867 if (cur_entry == NULL) {
2868 csa->ccb_h.status = CAM_RESRC_UNAVAIL;
2871 cur_entry->event_enable = csa->event_enable;
2872 cur_entry->callback_arg = csa->callback_arg;
2873 cur_entry->callback = csa->callback;
2874 SLIST_INSERT_HEAD(async_head, cur_entry, links);
2875 xpt_acquire_device(path->device);
2877 start_ccb->ccb_h.status = CAM_REQ_CMP;
2882 struct ccb_relsim *crs;
2885 crs = &start_ccb->crs;
2889 crs->ccb_h.status = CAM_DEV_NOT_THERE;
2893 if ((crs->release_flags & RELSIM_ADJUST_OPENINGS) != 0) {
2895 /* Don't ever go below one opening */
2896 if (crs->openings > 0) {
2897 xpt_dev_ccbq_resize(path, crs->openings);
2900 "number of openings is now %d\n",
2906 if ((crs->release_flags & RELSIM_RELEASE_AFTER_TIMEOUT) != 0) {
2908 if ((dev->flags & CAM_DEV_REL_TIMEOUT_PENDING) != 0) {
2911 * Just extend the old timeout and decrement
2912 * the freeze count so that a single timeout
2913 * is sufficient for releasing the queue.
2915 start_ccb->ccb_h.flags &= ~CAM_DEV_QFREEZE;
2916 callout_stop(&dev->callout);
2919 start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
2922 callout_reset(&dev->callout,
2923 (crs->release_timeout * hz) / 1000,
2924 xpt_release_devq_timeout, dev);
2926 dev->flags |= CAM_DEV_REL_TIMEOUT_PENDING;
2930 if ((crs->release_flags & RELSIM_RELEASE_AFTER_CMDCMPLT) != 0) {
2932 if ((dev->flags & CAM_DEV_REL_ON_COMPLETE) != 0) {
2934 * Decrement the freeze count so that a single
2935 * completion is still sufficient to unfreeze
2938 start_ccb->ccb_h.flags &= ~CAM_DEV_QFREEZE;
2941 dev->flags |= CAM_DEV_REL_ON_COMPLETE;
2942 start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
2946 if ((crs->release_flags & RELSIM_RELEASE_AFTER_QEMPTY) != 0) {
2948 if ((dev->flags & CAM_DEV_REL_ON_QUEUE_EMPTY) != 0
2949 || (dev->ccbq.dev_active == 0)) {
2951 start_ccb->ccb_h.flags &= ~CAM_DEV_QFREEZE;
2954 dev->flags |= CAM_DEV_REL_ON_QUEUE_EMPTY;
2955 start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
2959 if ((start_ccb->ccb_h.flags & CAM_DEV_QFREEZE) == 0)
2960 xpt_release_devq(path, /*count*/1, /*run_queue*/TRUE);
2961 start_ccb->crs.qfrozen_cnt = dev->ccbq.queue.qfrozen_cnt;
2962 start_ccb->ccb_h.status = CAM_REQ_CMP;
2966 struct cam_path *oldpath;
2967 struct cam_sim *oldsim;
2969 /* Check that all request bits are supported. */
2970 if (start_ccb->cdbg.flags & ~(CAM_DEBUG_COMPILE)) {
2971 start_ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
2975 cam_dflags = CAM_DEBUG_NONE;
2976 if (cam_dpath != NULL) {
2977 /* To release the old path we must hold proper lock. */
2978 oldpath = cam_dpath;
2980 oldsim = xpt_path_sim(oldpath);
2981 CAM_SIM_UNLOCK(xpt_path_sim(start_ccb->ccb_h.path));
2982 CAM_SIM_LOCK(oldsim);
2983 xpt_free_path(oldpath);
2984 CAM_SIM_UNLOCK(oldsim);
2985 CAM_SIM_LOCK(xpt_path_sim(start_ccb->ccb_h.path));
2987 if (start_ccb->cdbg.flags != CAM_DEBUG_NONE) {
2988 if (xpt_create_path(&cam_dpath, NULL,
2989 start_ccb->ccb_h.path_id,
2990 start_ccb->ccb_h.target_id,
2991 start_ccb->ccb_h.target_lun) !=
2993 start_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
2995 cam_dflags = start_ccb->cdbg.flags;
2996 start_ccb->ccb_h.status = CAM_REQ_CMP;
2997 xpt_print(cam_dpath, "debugging flags now %x\n",
3001 start_ccb->ccb_h.status = CAM_REQ_CMP;
3005 if ((start_ccb->ccb_h.flags & CAM_DEV_QFREEZE) != 0)
3006 xpt_freeze_devq(path, 1);
3007 start_ccb->ccb_h.status = CAM_REQ_CMP;
3014 printf("%s: CCB type %#x not supported\n", __func__,
3015 start_ccb->ccb_h.func_code);
3016 start_ccb->ccb_h.status = CAM_PROVIDE_FAIL;
3017 if (start_ccb->ccb_h.func_code & XPT_FC_DEV_QUEUED) {
3018 xpt_done(start_ccb);
3025 xpt_polled_action(union ccb *start_ccb)
3028 struct cam_sim *sim;
3029 struct cam_devq *devq;
3033 timeout = start_ccb->ccb_h.timeout * 10;
3034 sim = start_ccb->ccb_h.path->bus->sim;
3036 dev = start_ccb->ccb_h.path->device;
3038 mtx_assert(sim->mtx, MA_OWNED);
3040 /* Don't use ISR for this SIM while polling. */
3041 sim->flags |= CAM_SIM_POLLED;
3044 * Steal an opening so that no other queued requests
3045 * can get it before us while we simulate interrupts.
3047 dev->ccbq.devq_openings--;
3048 dev->ccbq.dev_openings--;
3050 while(((devq != NULL && devq->send_openings <= 0) ||
3051 dev->ccbq.dev_openings < 0) && (--timeout > 0)) {
3053 (*(sim->sim_poll))(sim);
3054 camisr_runqueue(sim);
3057 dev->ccbq.devq_openings++;
3058 dev->ccbq.dev_openings++;
3061 xpt_action(start_ccb);
3062 while(--timeout > 0) {
3063 (*(sim->sim_poll))(sim);
3064 camisr_runqueue(sim);
3065 if ((start_ccb->ccb_h.status & CAM_STATUS_MASK)
3072 * XXX Is it worth adding a sim_timeout entry
3073 * point so we can attempt recovery? If
3074 * this is only used for dumps, I don't think
3077 start_ccb->ccb_h.status = CAM_CMD_TIMEOUT;
3080 start_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
3083 /* We will use CAM ISR for this SIM again. */
3084 sim->flags &= ~CAM_SIM_POLLED;
3088 * Schedule a peripheral driver to receive a ccb when it's
3089 * target device has space for more transactions.
3092 xpt_schedule(struct cam_periph *perph, u_int32_t new_priority)
3094 struct cam_ed *device;
3097 mtx_assert(perph->sim->mtx, MA_OWNED);
3099 CAM_DEBUG(perph->path, CAM_DEBUG_TRACE, ("xpt_schedule\n"));
3100 device = perph->path->device;
3101 if (periph_is_queued(perph)) {
3102 /* Simply reorder based on new priority */
3103 CAM_DEBUG(perph->path, CAM_DEBUG_SUBTRACE,
3104 (" change priority to %d\n", new_priority));
3105 if (new_priority < perph->pinfo.priority) {
3106 camq_change_priority(&device->drvq,
3112 /* New entry on the queue */
3113 CAM_DEBUG(perph->path, CAM_DEBUG_SUBTRACE,
3114 (" added periph to queue\n"));
3115 perph->pinfo.priority = new_priority;
3116 perph->pinfo.generation = ++device->drvq.generation;
3117 camq_insert(&device->drvq, &perph->pinfo);
3121 CAM_DEBUG(perph->path, CAM_DEBUG_SUBTRACE,
3122 (" calling xpt_run_dev_allocq\n"));
3123 xpt_run_dev_allocq(device);
3129 * Schedule a device to run on a given queue.
3130 * If the device was inserted as a new entry on the queue,
3131 * return 1 meaning the device queue should be run. If we
3132 * were already queued, implying someone else has already
3133 * started the queue, return 0 so the caller doesn't attempt
3137 xpt_schedule_dev(struct camq *queue, cam_pinfo *pinfo,
3138 u_int32_t new_priority)
3141 u_int32_t old_priority;
3143 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_schedule_dev\n"));
3145 old_priority = pinfo->priority;
3148 * Are we already queued?
3150 if (pinfo->index != CAM_UNQUEUED_INDEX) {
3151 /* Simply reorder based on new priority */
3152 if (new_priority < old_priority) {
3153 camq_change_priority(queue, pinfo->index,
3155 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3156 ("changed priority to %d\n",
3162 /* New entry on the queue */
3163 if (new_priority < old_priority)
3164 pinfo->priority = new_priority;
3166 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3167 ("Inserting onto queue\n"));
3168 pinfo->generation = ++queue->generation;
3169 camq_insert(queue, pinfo);
3176 xpt_run_dev_allocq(struct cam_ed *device)
3180 if (device->ccbq.devq_allocating)
3182 device->ccbq.devq_allocating = 1;
3183 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_run_dev_allocq(%p)\n", device));
3184 drvq = &device->drvq;
3185 while ((drvq->entries > 0) &&
3186 (device->ccbq.devq_openings > 0 ||
3187 CAMQ_GET_PRIO(drvq) <= CAM_PRIORITY_OOB) &&
3188 (device->ccbq.queue.qfrozen_cnt == 0)) {
3189 union ccb *work_ccb;
3190 struct cam_periph *drv;
3192 KASSERT(drvq->entries > 0, ("xpt_run_dev_allocq: "
3193 "Device on queue without any work to do"));
3194 if ((work_ccb = xpt_get_ccb(device)) != NULL) {
3195 drv = (struct cam_periph*)camq_remove(drvq, CAMQ_HEAD);
3196 xpt_setup_ccb(&work_ccb->ccb_h, drv->path,
3197 drv->pinfo.priority);
3198 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3199 ("calling periph start\n"));
3200 drv->periph_start(drv, work_ccb);
3203 * Malloc failure in alloc_ccb
3206 * XXX add us to a list to be run from free_ccb
3207 * if we don't have any ccbs active on this
3208 * device queue otherwise we may never get run
3214 device->ccbq.devq_allocating = 0;
3218 xpt_run_devq(struct cam_devq *devq)
3220 char cdb_str[(SCSI_MAX_CDBLEN * 3) + 1];
3222 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_run_devq\n"));
3224 devq->send_queue.qfrozen_cnt++;
3225 while ((devq->send_queue.entries > 0)
3226 && (devq->send_openings > 0)
3227 && (devq->send_queue.qfrozen_cnt <= 1)) {
3228 struct cam_ed_qinfo *qinfo;
3229 struct cam_ed *device;
3230 union ccb *work_ccb;
3231 struct cam_sim *sim;
3233 qinfo = (struct cam_ed_qinfo *)camq_remove(&devq->send_queue,
3235 device = qinfo->device;
3236 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3237 ("running device %p\n", device));
3239 work_ccb = cam_ccbq_peek_ccb(&device->ccbq, CAMQ_HEAD);
3240 if (work_ccb == NULL) {
3241 printf("device on run queue with no ccbs???\n");
3245 if ((work_ccb->ccb_h.flags & CAM_HIGH_POWER) != 0) {
3247 mtx_lock(&xsoftc.xpt_lock);
3248 if (xsoftc.num_highpower <= 0) {
3250 * We got a high power command, but we
3251 * don't have any available slots. Freeze
3252 * the device queue until we have a slot
3255 xpt_freeze_devq(work_ccb->ccb_h.path, 1);
3256 STAILQ_INSERT_TAIL(&xsoftc.highpowerq,
3257 work_ccb->ccb_h.path->device,
3260 mtx_unlock(&xsoftc.xpt_lock);
3264 * Consume a high power slot while
3267 xsoftc.num_highpower--;
3269 mtx_unlock(&xsoftc.xpt_lock);
3271 cam_ccbq_remove_ccb(&device->ccbq, work_ccb);
3272 cam_ccbq_send_ccb(&device->ccbq, work_ccb);
3274 devq->send_openings--;
3275 devq->send_active++;
3277 xpt_schedule_devq(devq, device);
3279 if ((work_ccb->ccb_h.flags & CAM_DEV_QFREEZE) != 0) {
3281 * The client wants to freeze the queue
3282 * after this CCB is sent.
3284 xpt_freeze_devq(work_ccb->ccb_h.path, 1);
3287 /* In Target mode, the peripheral driver knows best... */
3288 if (work_ccb->ccb_h.func_code == XPT_SCSI_IO) {
3289 if ((device->inq_flags & SID_CmdQue) != 0
3290 && work_ccb->csio.tag_action != CAM_TAG_ACTION_NONE)
3291 work_ccb->ccb_h.flags |= CAM_TAG_ACTION_VALID;
3294 * Clear this in case of a retried CCB that
3295 * failed due to a rejected tag.
3297 work_ccb->ccb_h.flags &= ~CAM_TAG_ACTION_VALID;
3300 switch (work_ccb->ccb_h.func_code) {
3302 CAM_DEBUG(work_ccb->ccb_h.path,
3303 CAM_DEBUG_CDB,("%s. CDB: %s\n",
3304 scsi_op_desc(work_ccb->csio.cdb_io.cdb_bytes[0],
3306 scsi_cdb_string(work_ccb->csio.cdb_io.cdb_bytes,
3307 cdb_str, sizeof(cdb_str))));
3310 CAM_DEBUG(work_ccb->ccb_h.path,
3311 CAM_DEBUG_CDB,("%s. ACB: %s\n",
3312 ata_op_string(&work_ccb->ataio.cmd),
3313 ata_cmd_string(&work_ccb->ataio.cmd,
3314 cdb_str, sizeof(cdb_str))));
3321 * Device queues can be shared among multiple sim instances
3322 * that reside on different busses. Use the SIM in the queue
3323 * CCB's path, rather than the one in the bus that was passed
3324 * into this function.
3326 sim = work_ccb->ccb_h.path->bus->sim;
3327 (*(sim->sim_action))(sim, work_ccb);
3329 devq->send_queue.qfrozen_cnt--;
3333 * This function merges stuff from the slave ccb into the master ccb, while
3334 * keeping important fields in the master ccb constant.
3337 xpt_merge_ccb(union ccb *master_ccb, union ccb *slave_ccb)
3341 * Pull fields that are valid for peripheral drivers to set
3342 * into the master CCB along with the CCB "payload".
3344 master_ccb->ccb_h.retry_count = slave_ccb->ccb_h.retry_count;
3345 master_ccb->ccb_h.func_code = slave_ccb->ccb_h.func_code;
3346 master_ccb->ccb_h.timeout = slave_ccb->ccb_h.timeout;
3347 master_ccb->ccb_h.flags = slave_ccb->ccb_h.flags;
3348 bcopy(&(&slave_ccb->ccb_h)[1], &(&master_ccb->ccb_h)[1],
3349 sizeof(union ccb) - sizeof(struct ccb_hdr));
3353 xpt_setup_ccb(struct ccb_hdr *ccb_h, struct cam_path *path, u_int32_t priority)
3356 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_setup_ccb\n"));
3357 ccb_h->pinfo.priority = priority;
3359 ccb_h->path_id = path->bus->path_id;
3361 ccb_h->target_id = path->target->target_id;
3363 ccb_h->target_id = CAM_TARGET_WILDCARD;
3365 ccb_h->target_lun = path->device->lun_id;
3366 ccb_h->pinfo.generation = ++path->device->ccbq.queue.generation;
3368 ccb_h->target_lun = CAM_TARGET_WILDCARD;
3370 ccb_h->pinfo.index = CAM_UNQUEUED_INDEX;
3375 /* Path manipulation functions */
3377 xpt_create_path(struct cam_path **new_path_ptr, struct cam_periph *perph,
3378 path_id_t path_id, target_id_t target_id, lun_id_t lun_id)
3380 struct cam_path *path;
3383 path = (struct cam_path *)malloc(sizeof(*path), M_CAMPATH, M_NOWAIT);
3386 status = CAM_RESRC_UNAVAIL;
3389 status = xpt_compile_path(path, perph, path_id, target_id, lun_id);
3390 if (status != CAM_REQ_CMP) {
3391 free(path, M_CAMPATH);
3394 *new_path_ptr = path;
3399 xpt_create_path_unlocked(struct cam_path **new_path_ptr,
3400 struct cam_periph *periph, path_id_t path_id,
3401 target_id_t target_id, lun_id_t lun_id)
3403 struct cam_path *path;
3404 struct cam_eb *bus = NULL;
3407 path = (struct cam_path *)malloc(sizeof(*path), M_CAMPATH, M_WAITOK);
3409 bus = xpt_find_bus(path_id);
3411 CAM_SIM_LOCK(bus->sim);
3412 status = xpt_compile_path(path, periph, path_id, target_id, lun_id);
3414 CAM_SIM_UNLOCK(bus->sim);
3415 xpt_release_bus(bus);
3417 if (status != CAM_REQ_CMP) {
3418 free(path, M_CAMPATH);
3421 *new_path_ptr = path;
3426 xpt_compile_path(struct cam_path *new_path, struct cam_periph *perph,
3427 path_id_t path_id, target_id_t target_id, lun_id_t lun_id)
3430 struct cam_et *target;
3431 struct cam_ed *device;
3434 status = CAM_REQ_CMP; /* Completed without error */
3435 target = NULL; /* Wildcarded */
3436 device = NULL; /* Wildcarded */
3439 * We will potentially modify the EDT, so block interrupts
3440 * that may attempt to create cam paths.
3442 bus = xpt_find_bus(path_id);
3444 status = CAM_PATH_INVALID;
3446 target = xpt_find_target(bus, target_id);
3447 if (target == NULL) {
3449 struct cam_et *new_target;
3451 new_target = xpt_alloc_target(bus, target_id);
3452 if (new_target == NULL) {
3453 status = CAM_RESRC_UNAVAIL;
3455 target = new_target;
3458 if (target != NULL) {
3459 device = xpt_find_device(target, lun_id);
3460 if (device == NULL) {
3462 struct cam_ed *new_device;
3465 (*(bus->xport->alloc_device))(bus,
3468 if (new_device == NULL) {
3469 status = CAM_RESRC_UNAVAIL;
3471 device = new_device;
3478 * Only touch the user's data if we are successful.
3480 if (status == CAM_REQ_CMP) {
3481 new_path->periph = perph;
3482 new_path->bus = bus;
3483 new_path->target = target;
3484 new_path->device = device;
3485 CAM_DEBUG(new_path, CAM_DEBUG_TRACE, ("xpt_compile_path\n"));
3488 xpt_release_device(device);
3490 xpt_release_target(target);
3492 xpt_release_bus(bus);
3498 xpt_release_path(struct cam_path *path)
3500 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_release_path\n"));
3501 if (path->device != NULL) {
3502 xpt_release_device(path->device);
3503 path->device = NULL;
3505 if (path->target != NULL) {
3506 xpt_release_target(path->target);
3507 path->target = NULL;
3509 if (path->bus != NULL) {
3510 xpt_release_bus(path->bus);
3516 xpt_free_path(struct cam_path *path)
3519 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_free_path\n"));
3520 xpt_release_path(path);
3521 free(path, M_CAMPATH);
3525 xpt_path_counts(struct cam_path *path, uint32_t *bus_ref,
3526 uint32_t *periph_ref, uint32_t *target_ref, uint32_t *device_ref)
3532 *bus_ref = path->bus->refcount;
3538 *periph_ref = path->periph->refcount;
3545 *target_ref = path->target->refcount;
3551 *device_ref = path->device->refcount;
3558 * Return -1 for failure, 0 for exact match, 1 for match with wildcards
3559 * in path1, 2 for match with wildcards in path2.
3562 xpt_path_comp(struct cam_path *path1, struct cam_path *path2)
3566 if (path1->bus != path2->bus) {
3567 if (path1->bus->path_id == CAM_BUS_WILDCARD)
3569 else if (path2->bus->path_id == CAM_BUS_WILDCARD)
3574 if (path1->target != path2->target) {
3575 if (path1->target->target_id == CAM_TARGET_WILDCARD) {
3578 } else if (path2->target->target_id == CAM_TARGET_WILDCARD)
3583 if (path1->device != path2->device) {
3584 if (path1->device->lun_id == CAM_LUN_WILDCARD) {
3587 } else if (path2->device->lun_id == CAM_LUN_WILDCARD)
3596 xpt_path_comp_dev(struct cam_path *path, struct cam_ed *dev)
3600 if (path->bus != dev->target->bus) {
3601 if (path->bus->path_id == CAM_BUS_WILDCARD)
3603 else if (dev->target->bus->path_id == CAM_BUS_WILDCARD)
3608 if (path->target != dev->target) {
3609 if (path->target->target_id == CAM_TARGET_WILDCARD) {
3612 } else if (dev->target->target_id == CAM_TARGET_WILDCARD)
3617 if (path->device != dev) {
3618 if (path->device->lun_id == CAM_LUN_WILDCARD) {
3621 } else if (dev->lun_id == CAM_LUN_WILDCARD)
3630 xpt_print_path(struct cam_path *path)
3634 printf("(nopath): ");
3636 if (path->periph != NULL)
3637 printf("(%s%d:", path->periph->periph_name,
3638 path->periph->unit_number);
3640 printf("(noperiph:");
3642 if (path->bus != NULL)
3643 printf("%s%d:%d:", path->bus->sim->sim_name,
3644 path->bus->sim->unit_number,
3645 path->bus->sim->bus_id);
3649 if (path->target != NULL)
3650 printf("%d:", path->target->target_id);
3654 if (path->device != NULL)
3655 printf("%d): ", path->device->lun_id);
3662 xpt_print_device(struct cam_ed *device)
3666 printf("(nopath): ");
3668 printf("(noperiph:%s%d:%d:%d:%d): ", device->sim->sim_name,
3669 device->sim->unit_number,
3670 device->sim->bus_id,
3671 device->target->target_id,
3677 xpt_print(struct cam_path *path, const char *fmt, ...)
3680 xpt_print_path(path);
3687 xpt_path_string(struct cam_path *path, char *str, size_t str_len)
3692 if (path != NULL && path->bus != NULL)
3693 mtx_assert(path->bus->sim->mtx, MA_OWNED);
3696 sbuf_new(&sb, str, str_len, 0);
3699 sbuf_printf(&sb, "(nopath): ");
3701 if (path->periph != NULL)
3702 sbuf_printf(&sb, "(%s%d:", path->periph->periph_name,
3703 path->periph->unit_number);
3705 sbuf_printf(&sb, "(noperiph:");
3707 if (path->bus != NULL)
3708 sbuf_printf(&sb, "%s%d:%d:", path->bus->sim->sim_name,
3709 path->bus->sim->unit_number,
3710 path->bus->sim->bus_id);
3712 sbuf_printf(&sb, "nobus:");
3714 if (path->target != NULL)
3715 sbuf_printf(&sb, "%d:", path->target->target_id);
3717 sbuf_printf(&sb, "X:");
3719 if (path->device != NULL)
3720 sbuf_printf(&sb, "%d): ", path->device->lun_id);
3722 sbuf_printf(&sb, "X): ");
3726 return(sbuf_len(&sb));
3730 xpt_path_path_id(struct cam_path *path)
3732 return(path->bus->path_id);
3736 xpt_path_target_id(struct cam_path *path)
3738 if (path->target != NULL)
3739 return (path->target->target_id);
3741 return (CAM_TARGET_WILDCARD);
3745 xpt_path_lun_id(struct cam_path *path)
3747 if (path->device != NULL)
3748 return (path->device->lun_id);
3750 return (CAM_LUN_WILDCARD);
3754 xpt_path_sim(struct cam_path *path)
3757 return (path->bus->sim);
3761 xpt_path_periph(struct cam_path *path)
3763 mtx_assert(path->bus->sim->mtx, MA_OWNED);
3765 return (path->periph);
3769 xpt_path_legacy_ata_id(struct cam_path *path)
3774 if ((strcmp(path->bus->sim->sim_name, "ata") != 0) &&
3775 strcmp(path->bus->sim->sim_name, "ahcich") != 0 &&
3776 strcmp(path->bus->sim->sim_name, "mvsch") != 0 &&
3777 strcmp(path->bus->sim->sim_name, "siisch") != 0)
3780 if (strcmp(path->bus->sim->sim_name, "ata") == 0 &&
3781 path->bus->sim->unit_number < 2) {
3782 bus_id = path->bus->sim->unit_number;
3786 TAILQ_FOREACH(bus, &xsoftc.xpt_busses, links) {
3787 if (bus == path->bus)
3789 if ((strcmp(bus->sim->sim_name, "ata") == 0 &&
3790 bus->sim->unit_number >= 2) ||
3791 strcmp(bus->sim->sim_name, "ahcich") == 0 ||
3792 strcmp(bus->sim->sim_name, "mvsch") == 0 ||
3793 strcmp(bus->sim->sim_name, "siisch") == 0)
3798 if (path->target != NULL) {
3799 if (path->target->target_id < 2)
3800 return (bus_id * 2 + path->target->target_id);
3804 return (bus_id * 2);
3808 * Release a CAM control block for the caller. Remit the cost of the structure
3809 * to the device referenced by the path. If the this device had no 'credits'
3810 * and peripheral drivers have registered async callbacks for this notification
3814 xpt_release_ccb(union ccb *free_ccb)
3816 struct cam_path *path;
3817 struct cam_ed *device;
3819 struct cam_sim *sim;
3821 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_release_ccb\n"));
3822 path = free_ccb->ccb_h.path;
3823 device = path->device;
3827 mtx_assert(sim->mtx, MA_OWNED);
3829 cam_ccbq_release_opening(&device->ccbq);
3830 if (sim->ccb_count > sim->max_ccbs) {
3831 xpt_free_ccb(free_ccb);
3834 SLIST_INSERT_HEAD(&sim->ccb_freeq, &free_ccb->ccb_h,
3837 xpt_run_dev_allocq(device);
3840 /* Functions accessed by SIM drivers */
3842 static struct xpt_xport xport_default = {
3843 .alloc_device = xpt_alloc_device_default,
3844 .action = xpt_action_default,
3845 .async = xpt_dev_async_default,
3849 * A sim structure, listing the SIM entry points and instance
3850 * identification info is passed to xpt_bus_register to hook the SIM
3851 * into the CAM framework. xpt_bus_register creates a cam_eb entry
3852 * for this new bus and places it in the array of busses and assigns
3853 * it a path_id. The path_id may be influenced by "hard wiring"
3854 * information specified by the user. Once interrupt services are
3855 * available, the bus will be probed.
3858 xpt_bus_register(struct cam_sim *sim, device_t parent, u_int32_t bus)
3860 struct cam_eb *new_bus;
3861 struct cam_eb *old_bus;
3862 struct ccb_pathinq cpi;
3863 struct cam_path *path;
3866 mtx_assert(sim->mtx, MA_OWNED);
3869 new_bus = (struct cam_eb *)malloc(sizeof(*new_bus),
3870 M_CAMXPT, M_NOWAIT);
3871 if (new_bus == NULL) {
3872 /* Couldn't satisfy request */
3873 return (CAM_RESRC_UNAVAIL);
3876 TAILQ_INIT(&new_bus->et_entries);
3879 timevalclear(&new_bus->last_reset);
3881 new_bus->refcount = 1; /* Held until a bus_deregister event */
3882 new_bus->generation = 0;
3885 sim->path_id = new_bus->path_id =
3886 xptpathid(sim->sim_name, sim->unit_number, sim->bus_id);
3887 old_bus = TAILQ_FIRST(&xsoftc.xpt_busses);
3888 while (old_bus != NULL
3889 && old_bus->path_id < new_bus->path_id)
3890 old_bus = TAILQ_NEXT(old_bus, links);
3891 if (old_bus != NULL)
3892 TAILQ_INSERT_BEFORE(old_bus, new_bus, links);
3894 TAILQ_INSERT_TAIL(&xsoftc.xpt_busses, new_bus, links);
3895 xsoftc.bus_generation++;
3899 * Set a default transport so that a PATH_INQ can be issued to
3900 * the SIM. This will then allow for probing and attaching of
3901 * a more appropriate transport.
3903 new_bus->xport = &xport_default;
3905 status = xpt_create_path(&path, /*periph*/NULL, sim->path_id,
3906 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
3907 if (status != CAM_REQ_CMP) {
3908 xpt_release_bus(new_bus);
3909 free(path, M_CAMXPT);
3910 return (CAM_RESRC_UNAVAIL);
3913 xpt_setup_ccb(&cpi.ccb_h, path, CAM_PRIORITY_NORMAL);
3914 cpi.ccb_h.func_code = XPT_PATH_INQ;
3915 xpt_action((union ccb *)&cpi);
3917 if (cpi.ccb_h.status == CAM_REQ_CMP) {
3918 switch (cpi.transport) {
3926 new_bus->xport = scsi_get_xport();
3930 new_bus->xport = ata_get_xport();
3933 new_bus->xport = &xport_default;
3938 /* Notify interested parties */
3939 if (sim->path_id != CAM_XPT_PATH_ID) {
3941 xpt_async(AC_PATH_REGISTERED, path, &cpi);
3942 if ((cpi.hba_misc & PIM_NOSCAN) == 0) {
3943 union ccb *scan_ccb;
3945 /* Initiate bus rescan. */
3946 scan_ccb = xpt_alloc_ccb_nowait();
3947 if (scan_ccb != NULL) {
3948 scan_ccb->ccb_h.path = path;
3949 scan_ccb->ccb_h.func_code = XPT_SCAN_BUS;
3950 scan_ccb->crcn.flags = 0;
3951 xpt_rescan(scan_ccb);
3954 "Can't allocate CCB to scan bus\n");
3956 xpt_free_path(path);
3958 xpt_free_path(path);
3959 return (CAM_SUCCESS);
3963 xpt_bus_deregister(path_id_t pathid)
3965 struct cam_path bus_path;
3968 status = xpt_compile_path(&bus_path, NULL, pathid,
3969 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
3970 if (status != CAM_REQ_CMP)
3973 xpt_async(AC_LOST_DEVICE, &bus_path, NULL);
3974 xpt_async(AC_PATH_DEREGISTERED, &bus_path, NULL);
3976 /* Release the reference count held while registered. */
3977 xpt_release_bus(bus_path.bus);
3978 xpt_release_path(&bus_path);
3980 return (CAM_REQ_CMP);
3984 xptnextfreepathid(void)
3990 mtx_assert(&xsoftc.xpt_topo_lock, MA_OWNED);
3992 bus = TAILQ_FIRST(&xsoftc.xpt_busses);
3994 /* Find an unoccupied pathid */
3995 while (bus != NULL && bus->path_id <= pathid) {
3996 if (bus->path_id == pathid)
3998 bus = TAILQ_NEXT(bus, links);
4002 * Ensure that this pathid is not reserved for
4003 * a bus that may be registered in the future.
4005 if (resource_string_value("scbus", pathid, "at", &strval) == 0) {
4007 /* Start the search over */
4014 xptpathid(const char *sim_name, int sim_unit, int sim_bus)
4021 pathid = CAM_XPT_PATH_ID;
4022 snprintf(buf, sizeof(buf), "%s%d", sim_name, sim_unit);
4023 if (strcmp(buf, "xpt0") == 0 && sim_bus == 0)
4026 while ((resource_find_match(&i, &dname, &dunit, "at", buf)) == 0) {
4027 if (strcmp(dname, "scbus")) {
4028 /* Avoid a bit of foot shooting. */
4031 if (dunit < 0) /* unwired?! */
4033 if (resource_int_value("scbus", dunit, "bus", &val) == 0) {
4034 if (sim_bus == val) {
4038 } else if (sim_bus == 0) {
4039 /* Unspecified matches bus 0 */
4043 printf("Ambiguous scbus configuration for %s%d "
4044 "bus %d, cannot wire down. The kernel "
4045 "config entry for scbus%d should "
4046 "specify a controller bus.\n"
4047 "Scbus will be assigned dynamically.\n",
4048 sim_name, sim_unit, sim_bus, dunit);
4053 if (pathid == CAM_XPT_PATH_ID)
4054 pathid = xptnextfreepathid();
4059 xpt_async_string(u_int32_t async_code)
4062 switch (async_code) {
4063 case AC_BUS_RESET: return ("AC_BUS_RESET");
4064 case AC_UNSOL_RESEL: return ("AC_UNSOL_RESEL");
4065 case AC_SCSI_AEN: return ("AC_SCSI_AEN");
4066 case AC_SENT_BDR: return ("AC_SENT_BDR");
4067 case AC_PATH_REGISTERED: return ("AC_PATH_REGISTERED");
4068 case AC_PATH_DEREGISTERED: return ("AC_PATH_DEREGISTERED");
4069 case AC_FOUND_DEVICE: return ("AC_FOUND_DEVICE");
4070 case AC_LOST_DEVICE: return ("AC_LOST_DEVICE");
4071 case AC_TRANSFER_NEG: return ("AC_TRANSFER_NEG");
4072 case AC_INQ_CHANGED: return ("AC_INQ_CHANGED");
4073 case AC_GETDEV_CHANGED: return ("AC_GETDEV_CHANGED");
4074 case AC_CONTRACT: return ("AC_CONTRACT");
4075 case AC_ADVINFO_CHANGED: return ("AC_ADVINFO_CHANGED");
4076 case AC_UNIT_ATTENTION: return ("AC_UNIT_ATTENTION");
4078 return ("AC_UNKNOWN");
4082 xpt_async(u_int32_t async_code, struct cam_path *path, void *async_arg)
4085 struct cam_et *target, *next_target;
4086 struct cam_ed *device, *next_device;
4088 mtx_assert(path->bus->sim->mtx, MA_OWNED);
4089 CAM_DEBUG(path, CAM_DEBUG_TRACE | CAM_DEBUG_INFO,
4090 ("xpt_async(%s)\n", xpt_async_string(async_code)));
4093 * Most async events come from a CAM interrupt context. In
4094 * a few cases, the error recovery code at the peripheral layer,
4095 * which may run from our SWI or a process context, may signal
4096 * deferred events with a call to xpt_async.
4101 if (async_code == AC_BUS_RESET) {
4102 /* Update our notion of when the last reset occurred */
4103 microtime(&bus->last_reset);
4106 for (target = TAILQ_FIRST(&bus->et_entries);
4108 target = next_target) {
4110 next_target = TAILQ_NEXT(target, links);
4112 if (path->target != target
4113 && path->target->target_id != CAM_TARGET_WILDCARD
4114 && target->target_id != CAM_TARGET_WILDCARD)
4117 if (async_code == AC_SENT_BDR) {
4118 /* Update our notion of when the last reset occurred */
4119 microtime(&path->target->last_reset);
4122 for (device = TAILQ_FIRST(&target->ed_entries);
4124 device = next_device) {
4126 next_device = TAILQ_NEXT(device, links);
4128 if (path->device != device
4129 && path->device->lun_id != CAM_LUN_WILDCARD
4130 && device->lun_id != CAM_LUN_WILDCARD)
4133 * The async callback could free the device.
4134 * If it is a broadcast async, it doesn't hold
4135 * device reference, so take our own reference.
4137 xpt_acquire_device(device);
4138 (*(bus->xport->async))(async_code, bus,
4142 xpt_async_bcast(&device->asyncs, async_code,
4144 xpt_release_device(device);
4149 * If this wasn't a fully wildcarded async, tell all
4150 * clients that want all async events.
4152 if (bus != xpt_periph->path->bus)
4153 xpt_async_bcast(&xpt_periph->path->device->asyncs, async_code,
4158 xpt_async_bcast(struct async_list *async_head,
4159 u_int32_t async_code,
4160 struct cam_path *path, void *async_arg)
4162 struct async_node *cur_entry;
4164 cur_entry = SLIST_FIRST(async_head);
4165 while (cur_entry != NULL) {
4166 struct async_node *next_entry;
4168 * Grab the next list entry before we call the current
4169 * entry's callback. This is because the callback function
4170 * can delete its async callback entry.
4172 next_entry = SLIST_NEXT(cur_entry, links);
4173 if ((cur_entry->event_enable & async_code) != 0)
4174 cur_entry->callback(cur_entry->callback_arg,
4177 cur_entry = next_entry;
4182 xpt_dev_async_default(u_int32_t async_code, struct cam_eb *bus,
4183 struct cam_et *target, struct cam_ed *device,
4186 printf("%s called\n", __func__);
4190 xpt_freeze_devq(struct cam_path *path, u_int count)
4192 struct cam_ed *dev = path->device;
4194 mtx_assert(path->bus->sim->mtx, MA_OWNED);
4195 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_freeze_devq() %u->%u\n",
4196 dev->ccbq.queue.qfrozen_cnt, dev->ccbq.queue.qfrozen_cnt + count));
4197 dev->ccbq.queue.qfrozen_cnt += count;
4198 /* Remove frozen device from sendq. */
4199 if (device_is_queued(dev)) {
4200 camq_remove(&dev->sim->devq->send_queue,
4201 dev->devq_entry.pinfo.index);
4203 return (dev->ccbq.queue.qfrozen_cnt);
4207 xpt_freeze_simq(struct cam_sim *sim, u_int count)
4210 mtx_assert(sim->mtx, MA_OWNED);
4211 sim->devq->send_queue.qfrozen_cnt += count;
4212 return (sim->devq->send_queue.qfrozen_cnt);
4216 xpt_release_devq_timeout(void *arg)
4218 struct cam_ed *device;
4220 device = (struct cam_ed *)arg;
4221 CAM_DEBUG_DEV(device, CAM_DEBUG_TRACE, ("xpt_release_devq_timeout\n"));
4222 xpt_release_devq_device(device, /*count*/1, /*run_queue*/TRUE);
4226 xpt_release_devq(struct cam_path *path, u_int count, int run_queue)
4229 mtx_assert(path->bus->sim->mtx, MA_OWNED);
4230 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_release_devq(%d, %d)\n",
4232 xpt_release_devq_device(path->device, count, run_queue);
4236 xpt_release_devq_device(struct cam_ed *dev, u_int count, int run_queue)
4239 CAM_DEBUG_DEV(dev, CAM_DEBUG_TRACE,
4240 ("xpt_release_devq_device(%d, %d) %u->%u\n", count, run_queue,
4241 dev->ccbq.queue.qfrozen_cnt, dev->ccbq.queue.qfrozen_cnt - count));
4242 if (count > dev->ccbq.queue.qfrozen_cnt) {
4244 printf("xpt_release_devq(): requested %u > present %u\n",
4245 count, dev->ccbq.queue.qfrozen_cnt);
4247 count = dev->ccbq.queue.qfrozen_cnt;
4249 dev->ccbq.queue.qfrozen_cnt -= count;
4250 if (dev->ccbq.queue.qfrozen_cnt == 0) {
4252 * No longer need to wait for a successful
4253 * command completion.
4255 dev->flags &= ~CAM_DEV_REL_ON_COMPLETE;
4257 * Remove any timeouts that might be scheduled
4258 * to release this queue.
4260 if ((dev->flags & CAM_DEV_REL_TIMEOUT_PENDING) != 0) {
4261 callout_stop(&dev->callout);
4262 dev->flags &= ~CAM_DEV_REL_TIMEOUT_PENDING;
4264 xpt_run_dev_allocq(dev);
4268 * Now that we are unfrozen schedule the
4269 * device so any pending transactions are
4272 if (xpt_schedule_devq(dev->sim->devq, dev))
4273 xpt_run_devq(dev->sim->devq);
4278 xpt_release_simq(struct cam_sim *sim, int run_queue)
4282 mtx_assert(sim->mtx, MA_OWNED);
4283 sendq = &(sim->devq->send_queue);
4284 if (sendq->qfrozen_cnt <= 0) {
4286 printf("xpt_release_simq: requested 1 > present %u\n",
4287 sendq->qfrozen_cnt);
4290 sendq->qfrozen_cnt--;
4291 if (sendq->qfrozen_cnt == 0) {
4293 * If there is a timeout scheduled to release this
4294 * sim queue, remove it. The queue frozen count is
4297 if ((sim->flags & CAM_SIM_REL_TIMEOUT_PENDING) != 0){
4298 callout_stop(&sim->callout);
4299 sim->flags &= ~CAM_SIM_REL_TIMEOUT_PENDING;
4303 * Now that we are unfrozen run the send queue.
4305 xpt_run_devq(sim->devq);
4311 * XXX Appears to be unused.
4314 xpt_release_simq_timeout(void *arg)
4316 struct cam_sim *sim;
4318 sim = (struct cam_sim *)arg;
4319 xpt_release_simq(sim, /* run_queue */ TRUE);
4323 xpt_done(union ccb *done_ccb)
4325 struct cam_sim *sim;
4328 CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("xpt_done\n"));
4329 if ((done_ccb->ccb_h.func_code & XPT_FC_QUEUED) != 0) {
4331 * Queue up the request for handling by our SWI handler
4332 * any of the "non-immediate" type of ccbs.
4334 sim = done_ccb->ccb_h.path->bus->sim;
4335 TAILQ_INSERT_TAIL(&sim->sim_doneq, &done_ccb->ccb_h,
4337 done_ccb->ccb_h.pinfo.index = CAM_DONEQ_INDEX;
4338 if ((sim->flags & (CAM_SIM_ON_DONEQ | CAM_SIM_POLLED |
4339 CAM_SIM_BATCH)) == 0) {
4340 mtx_lock(&cam_simq_lock);
4341 first = TAILQ_EMPTY(&cam_simq);
4342 TAILQ_INSERT_TAIL(&cam_simq, sim, links);
4343 mtx_unlock(&cam_simq_lock);
4344 sim->flags |= CAM_SIM_ON_DONEQ;
4346 swi_sched(cambio_ih, 0);
4352 xpt_batch_start(struct cam_sim *sim)
4355 KASSERT((sim->flags & CAM_SIM_BATCH) == 0, ("Batch flag already set"));
4356 sim->flags |= CAM_SIM_BATCH;
4360 xpt_batch_done(struct cam_sim *sim)
4363 KASSERT((sim->flags & CAM_SIM_BATCH) != 0, ("Batch flag was not set"));
4364 sim->flags &= ~CAM_SIM_BATCH;
4365 if (!TAILQ_EMPTY(&sim->sim_doneq) &&
4366 (sim->flags & CAM_SIM_ON_DONEQ) == 0)
4367 camisr_runqueue(sim);
4375 new_ccb = malloc(sizeof(*new_ccb), M_CAMCCB, M_ZERO|M_WAITOK);
4380 xpt_alloc_ccb_nowait()
4384 new_ccb = malloc(sizeof(*new_ccb), M_CAMCCB, M_ZERO|M_NOWAIT);
4389 xpt_free_ccb(union ccb *free_ccb)
4391 free(free_ccb, M_CAMCCB);
4396 /* Private XPT functions */
4399 * Get a CAM control block for the caller. Charge the structure to the device
4400 * referenced by the path. If the this device has no 'credits' then the
4401 * device already has the maximum number of outstanding operations under way
4402 * and we return NULL. If we don't have sufficient resources to allocate more
4403 * ccbs, we also return NULL.
4406 xpt_get_ccb(struct cam_ed *device)
4409 struct cam_sim *sim;
4412 if ((new_ccb = (union ccb *)SLIST_FIRST(&sim->ccb_freeq)) == NULL) {
4413 new_ccb = xpt_alloc_ccb_nowait();
4414 if (new_ccb == NULL) {
4417 SLIST_INSERT_HEAD(&sim->ccb_freeq, &new_ccb->ccb_h,
4421 cam_ccbq_take_opening(&device->ccbq);
4422 SLIST_REMOVE_HEAD(&sim->ccb_freeq, xpt_links.sle);
4427 xpt_release_bus(struct cam_eb *bus)
4431 KASSERT(bus->refcount >= 1, ("bus->refcount >= 1"));
4432 if (--bus->refcount > 0) {
4436 KASSERT(TAILQ_EMPTY(&bus->et_entries),
4437 ("refcount is zero, but target list is not empty"));
4438 TAILQ_REMOVE(&xsoftc.xpt_busses, bus, links);
4439 xsoftc.bus_generation++;
4441 cam_sim_release(bus->sim);
4442 free(bus, M_CAMXPT);
4445 static struct cam_et *
4446 xpt_alloc_target(struct cam_eb *bus, target_id_t target_id)
4448 struct cam_et *cur_target, *target;
4450 mtx_assert(bus->sim->mtx, MA_OWNED);
4451 target = (struct cam_et *)malloc(sizeof(*target), M_CAMXPT,
4456 TAILQ_INIT(&target->ed_entries);
4458 target->target_id = target_id;
4459 target->refcount = 1;
4460 target->generation = 0;
4461 target->luns = NULL;
4462 timevalclear(&target->last_reset);
4464 * Hold a reference to our parent bus so it
4465 * will not go away before we do.
4471 /* Insertion sort into our bus's target list */
4472 cur_target = TAILQ_FIRST(&bus->et_entries);
4473 while (cur_target != NULL && cur_target->target_id < target_id)
4474 cur_target = TAILQ_NEXT(cur_target, links);
4475 if (cur_target != NULL) {
4476 TAILQ_INSERT_BEFORE(cur_target, target, links);
4478 TAILQ_INSERT_TAIL(&bus->et_entries, target, links);
4485 xpt_release_target(struct cam_et *target)
4488 mtx_assert(target->bus->sim->mtx, MA_OWNED);
4489 if (--target->refcount > 0)
4491 KASSERT(TAILQ_EMPTY(&target->ed_entries),
4492 ("refcount is zero, but device list is not empty"));
4493 TAILQ_REMOVE(&target->bus->et_entries, target, links);
4494 target->bus->generation++;
4495 xpt_release_bus(target->bus);
4497 free(target->luns, M_CAMXPT);
4498 free(target, M_CAMXPT);
4501 static struct cam_ed *
4502 xpt_alloc_device_default(struct cam_eb *bus, struct cam_et *target,
4505 struct cam_ed *device;
4507 device = xpt_alloc_device(bus, target, lun_id);
4511 device->mintags = 1;
4512 device->maxtags = 1;
4513 bus->sim->max_ccbs += device->ccbq.devq_openings;
4518 xpt_alloc_device(struct cam_eb *bus, struct cam_et *target, lun_id_t lun_id)
4520 struct cam_ed *cur_device, *device;
4521 struct cam_devq *devq;
4524 mtx_assert(target->bus->sim->mtx, MA_OWNED);
4525 /* Make space for us in the device queue on our bus */
4526 devq = bus->sim->devq;
4527 status = cam_devq_resize(devq, devq->send_queue.array_size + 1);
4528 if (status != CAM_REQ_CMP)
4531 device = (struct cam_ed *)malloc(sizeof(*device),
4532 M_CAMDEV, M_NOWAIT|M_ZERO);
4536 cam_init_pinfo(&device->devq_entry.pinfo);
4537 device->devq_entry.device = device;
4538 device->target = target;
4539 device->lun_id = lun_id;
4540 device->sim = bus->sim;
4541 /* Initialize our queues */
4542 if (camq_init(&device->drvq, 0) != 0) {
4543 free(device, M_CAMDEV);
4546 if (cam_ccbq_init(&device->ccbq,
4547 bus->sim->max_dev_openings) != 0) {
4548 camq_fini(&device->drvq);
4549 free(device, M_CAMDEV);
4552 SLIST_INIT(&device->asyncs);
4553 SLIST_INIT(&device->periphs);
4554 device->generation = 0;
4555 device->flags = CAM_DEV_UNCONFIGURED;
4556 device->tag_delay_count = 0;
4557 device->tag_saved_openings = 0;
4558 device->refcount = 1;
4559 callout_init_mtx(&device->callout, bus->sim->mtx, 0);
4561 cur_device = TAILQ_FIRST(&target->ed_entries);
4562 while (cur_device != NULL && cur_device->lun_id < lun_id)
4563 cur_device = TAILQ_NEXT(cur_device, links);
4564 if (cur_device != NULL)
4565 TAILQ_INSERT_BEFORE(cur_device, device, links);
4567 TAILQ_INSERT_TAIL(&target->ed_entries, device, links);
4569 target->generation++;
4574 xpt_acquire_device(struct cam_ed *device)
4577 mtx_assert(device->sim->mtx, MA_OWNED);
4582 xpt_release_device(struct cam_ed *device)
4584 struct cam_devq *devq;
4586 mtx_assert(device->sim->mtx, MA_OWNED);
4587 if (--device->refcount > 0)
4590 KASSERT(SLIST_EMPTY(&device->periphs),
4591 ("refcount is zero, but periphs list is not empty"));
4592 if (device->devq_entry.pinfo.index != CAM_UNQUEUED_INDEX)
4593 panic("Removing device while still queued for ccbs");
4595 if ((device->flags & CAM_DEV_REL_TIMEOUT_PENDING) != 0)
4596 callout_stop(&device->callout);
4598 TAILQ_REMOVE(&device->target->ed_entries, device,links);
4599 device->target->generation++;
4600 device->target->bus->sim->max_ccbs -= device->ccbq.devq_openings;
4601 /* Release our slot in the devq */
4602 devq = device->target->bus->sim->devq;
4603 cam_devq_resize(devq, devq->send_queue.array_size - 1);
4604 camq_fini(&device->drvq);
4605 cam_ccbq_fini(&device->ccbq);
4607 * Free allocated memory. free(9) does nothing if the
4608 * supplied pointer is NULL, so it is safe to call without
4611 free(device->supported_vpds, M_CAMXPT);
4612 free(device->device_id, M_CAMXPT);
4613 free(device->physpath, M_CAMXPT);
4614 free(device->rcap_buf, M_CAMXPT);
4615 free(device->serial_num, M_CAMXPT);
4617 xpt_release_target(device->target);
4618 free(device, M_CAMDEV);
4622 xpt_dev_ccbq_resize(struct cam_path *path, int newopenings)
4630 diff = newopenings - (dev->ccbq.dev_active + dev->ccbq.dev_openings);
4631 result = cam_ccbq_resize(&dev->ccbq, newopenings);
4632 if ((dev->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
4633 || (dev->inq_flags & SID_CmdQue) != 0)
4634 dev->tag_saved_openings = newopenings;
4635 /* Adjust the global limit */
4636 dev->sim->max_ccbs += diff;
4640 static struct cam_eb *
4641 xpt_find_bus(path_id_t path_id)
4646 for (bus = TAILQ_FIRST(&xsoftc.xpt_busses);
4648 bus = TAILQ_NEXT(bus, links)) {
4649 if (bus->path_id == path_id) {
4658 static struct cam_et *
4659 xpt_find_target(struct cam_eb *bus, target_id_t target_id)
4661 struct cam_et *target;
4663 mtx_assert(bus->sim->mtx, MA_OWNED);
4664 for (target = TAILQ_FIRST(&bus->et_entries);
4666 target = TAILQ_NEXT(target, links)) {
4667 if (target->target_id == target_id) {
4675 static struct cam_ed *
4676 xpt_find_device(struct cam_et *target, lun_id_t lun_id)
4678 struct cam_ed *device;
4680 mtx_assert(target->bus->sim->mtx, MA_OWNED);
4681 for (device = TAILQ_FIRST(&target->ed_entries);
4683 device = TAILQ_NEXT(device, links)) {
4684 if (device->lun_id == lun_id) {
4693 xpt_start_tags(struct cam_path *path)
4695 struct ccb_relsim crs;
4696 struct cam_ed *device;
4697 struct cam_sim *sim;
4700 device = path->device;
4701 sim = path->bus->sim;
4702 device->flags &= ~CAM_DEV_TAG_AFTER_COUNT;
4703 xpt_freeze_devq(path, /*count*/1);
4704 device->inq_flags |= SID_CmdQue;
4705 if (device->tag_saved_openings != 0)
4706 newopenings = device->tag_saved_openings;
4708 newopenings = min(device->maxtags,
4709 sim->max_tagged_dev_openings);
4710 xpt_dev_ccbq_resize(path, newopenings);
4711 xpt_async(AC_GETDEV_CHANGED, path, NULL);
4712 xpt_setup_ccb(&crs.ccb_h, path, CAM_PRIORITY_NORMAL);
4713 crs.ccb_h.func_code = XPT_REL_SIMQ;
4714 crs.release_flags = RELSIM_RELEASE_AFTER_QEMPTY;
4716 = crs.release_timeout
4719 xpt_action((union ccb *)&crs);
4723 xpt_stop_tags(struct cam_path *path)
4725 struct ccb_relsim crs;
4726 struct cam_ed *device;
4727 struct cam_sim *sim;
4729 device = path->device;
4730 sim = path->bus->sim;
4731 device->flags &= ~CAM_DEV_TAG_AFTER_COUNT;
4732 device->tag_delay_count = 0;
4733 xpt_freeze_devq(path, /*count*/1);
4734 device->inq_flags &= ~SID_CmdQue;
4735 xpt_dev_ccbq_resize(path, sim->max_dev_openings);
4736 xpt_async(AC_GETDEV_CHANGED, path, NULL);
4737 xpt_setup_ccb(&crs.ccb_h, path, CAM_PRIORITY_NORMAL);
4738 crs.ccb_h.func_code = XPT_REL_SIMQ;
4739 crs.release_flags = RELSIM_RELEASE_AFTER_QEMPTY;
4741 = crs.release_timeout
4744 xpt_action((union ccb *)&crs);
4748 xpt_boot_delay(void *arg)
4755 xpt_config(void *arg)
4758 * Now that interrupts are enabled, go find our devices
4761 /* Setup debugging path */
4762 if (cam_dflags != CAM_DEBUG_NONE) {
4763 if (xpt_create_path_unlocked(&cam_dpath, NULL,
4764 CAM_DEBUG_BUS, CAM_DEBUG_TARGET,
4765 CAM_DEBUG_LUN) != CAM_REQ_CMP) {
4766 printf("xpt_config: xpt_create_path() failed for debug"
4767 " target %d:%d:%d, debugging disabled\n",
4768 CAM_DEBUG_BUS, CAM_DEBUG_TARGET, CAM_DEBUG_LUN);
4769 cam_dflags = CAM_DEBUG_NONE;
4774 periphdriver_init(1);
4776 callout_init(&xsoftc.boot_callout, 1);
4777 callout_reset(&xsoftc.boot_callout, hz * xsoftc.boot_delay / 1000,
4778 xpt_boot_delay, NULL);
4779 /* Fire up rescan thread. */
4780 if (kproc_create(xpt_scanner_thread, NULL, NULL, 0, 0, "xpt_thrd")) {
4781 printf("xpt_config: failed to create rescan thread.\n");
4789 xsoftc.buses_to_config++;
4794 xpt_release_boot(void)
4797 xsoftc.buses_to_config--;
4798 if (xsoftc.buses_to_config == 0 && xsoftc.buses_config_done == 0) {
4799 struct xpt_task *task;
4801 xsoftc.buses_config_done = 1;
4803 /* Call manually because we don't have any busses */
4804 task = malloc(sizeof(struct xpt_task), M_CAMXPT, M_NOWAIT);
4806 TASK_INIT(&task->task, 0, xpt_finishconfig_task, task);
4807 taskqueue_enqueue(taskqueue_thread, &task->task);
4814 * If the given device only has one peripheral attached to it, and if that
4815 * peripheral is the passthrough driver, announce it. This insures that the
4816 * user sees some sort of announcement for every peripheral in their system.
4819 xptpassannouncefunc(struct cam_ed *device, void *arg)
4821 struct cam_periph *periph;
4824 for (periph = SLIST_FIRST(&device->periphs), i = 0; periph != NULL;
4825 periph = SLIST_NEXT(periph, periph_links), i++);
4827 periph = SLIST_FIRST(&device->periphs);
4829 && (strncmp(periph->periph_name, "pass", 4) == 0))
4830 xpt_announce_periph(periph, NULL);
4836 xpt_finishconfig_task(void *context, int pending)
4839 periphdriver_init(2);
4841 * Check for devices with no "standard" peripheral driver
4842 * attached. For any devices like that, announce the
4843 * passthrough driver so the user will see something.
4846 xpt_for_all_devices(xptpassannouncefunc, NULL);
4848 /* Release our hook so that the boot can continue. */
4849 config_intrhook_disestablish(xsoftc.xpt_config_hook);
4850 free(xsoftc.xpt_config_hook, M_CAMXPT);
4851 xsoftc.xpt_config_hook = NULL;
4853 free(context, M_CAMXPT);
4857 xpt_register_async(int event, ac_callback_t *cbfunc, void *cbarg,
4858 struct cam_path *path)
4860 struct ccb_setasync csa;
4865 mtx_lock(&xsoftc.xpt_lock);
4866 status = xpt_create_path(&path, /*periph*/NULL, CAM_XPT_PATH_ID,
4867 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
4868 if (status != CAM_REQ_CMP) {
4869 mtx_unlock(&xsoftc.xpt_lock);
4875 xpt_setup_ccb(&csa.ccb_h, path, CAM_PRIORITY_NORMAL);
4876 csa.ccb_h.func_code = XPT_SASYNC_CB;
4877 csa.event_enable = event;
4878 csa.callback = cbfunc;
4879 csa.callback_arg = cbarg;
4880 xpt_action((union ccb *)&csa);
4881 status = csa.ccb_h.status;
4884 xpt_free_path(path);
4885 mtx_unlock(&xsoftc.xpt_lock);
4888 if ((status == CAM_REQ_CMP) &&
4889 (csa.event_enable & AC_FOUND_DEVICE)) {
4891 * Get this peripheral up to date with all
4892 * the currently existing devices.
4894 xpt_for_all_devices(xptsetasyncfunc, &csa);
4896 if ((status == CAM_REQ_CMP) &&
4897 (csa.event_enable & AC_PATH_REGISTERED)) {
4899 * Get this peripheral up to date with all
4900 * the currently existing busses.
4902 xpt_for_all_busses(xptsetasyncbusfunc, &csa);
4909 xptaction(struct cam_sim *sim, union ccb *work_ccb)
4911 CAM_DEBUG(work_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("xptaction\n"));
4913 switch (work_ccb->ccb_h.func_code) {
4914 /* Common cases first */
4915 case XPT_PATH_INQ: /* Path routing inquiry */
4917 struct ccb_pathinq *cpi;
4919 cpi = &work_ccb->cpi;
4920 cpi->version_num = 1; /* XXX??? */
4921 cpi->hba_inquiry = 0;
4922 cpi->target_sprt = 0;
4924 cpi->hba_eng_cnt = 0;
4925 cpi->max_target = 0;
4927 cpi->initiator_id = 0;
4928 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
4929 strncpy(cpi->hba_vid, "", HBA_IDLEN);
4930 strncpy(cpi->dev_name, sim->sim_name, DEV_IDLEN);
4931 cpi->unit_number = sim->unit_number;
4932 cpi->bus_id = sim->bus_id;
4933 cpi->base_transfer_speed = 0;
4934 cpi->protocol = PROTO_UNSPECIFIED;
4935 cpi->protocol_version = PROTO_VERSION_UNSPECIFIED;
4936 cpi->transport = XPORT_UNSPECIFIED;
4937 cpi->transport_version = XPORT_VERSION_UNSPECIFIED;
4938 cpi->ccb_h.status = CAM_REQ_CMP;
4943 work_ccb->ccb_h.status = CAM_REQ_INVALID;
4950 * The xpt as a "controller" has no interrupt sources, so polling
4954 xptpoll(struct cam_sim *sim)
4959 xpt_lock_buses(void)
4961 mtx_lock(&xsoftc.xpt_topo_lock);
4965 xpt_unlock_buses(void)
4967 mtx_unlock(&xsoftc.xpt_topo_lock);
4974 struct cam_sim *sim;
4976 mtx_lock(&cam_simq_lock);
4978 while (!TAILQ_EMPTY(&cam_simq)) {
4979 TAILQ_CONCAT(&queue, &cam_simq, links);
4980 mtx_unlock(&cam_simq_lock);
4982 while ((sim = TAILQ_FIRST(&queue)) != NULL) {
4983 TAILQ_REMOVE(&queue, sim, links);
4985 camisr_runqueue(sim);
4986 sim->flags &= ~CAM_SIM_ON_DONEQ;
4987 CAM_SIM_UNLOCK(sim);
4989 mtx_lock(&cam_simq_lock);
4991 mtx_unlock(&cam_simq_lock);
4995 camisr_runqueue(struct cam_sim *sim)
4997 struct ccb_hdr *ccb_h;
4999 while ((ccb_h = TAILQ_FIRST(&sim->sim_doneq)) != NULL) {
5002 TAILQ_REMOVE(&sim->sim_doneq, ccb_h, sim_links.tqe);
5003 ccb_h->pinfo.index = CAM_UNQUEUED_INDEX;
5005 CAM_DEBUG(ccb_h->path, CAM_DEBUG_TRACE,
5010 if (ccb_h->flags & CAM_HIGH_POWER) {
5011 struct highpowerlist *hphead;
5012 struct cam_ed *device;
5014 mtx_lock(&xsoftc.xpt_lock);
5015 hphead = &xsoftc.highpowerq;
5017 device = STAILQ_FIRST(hphead);
5020 * Increment the count since this command is done.
5022 xsoftc.num_highpower++;
5025 * Any high powered commands queued up?
5027 if (device != NULL) {
5029 STAILQ_REMOVE_HEAD(hphead, highpowerq_entry);
5030 mtx_unlock(&xsoftc.xpt_lock);
5032 xpt_release_devq_device(device,
5033 /*count*/1, /*runqueue*/TRUE);
5035 mtx_unlock(&xsoftc.xpt_lock);
5038 if ((ccb_h->func_code & XPT_FC_USER_CCB) == 0) {
5041 dev = ccb_h->path->device;
5043 cam_ccbq_ccb_done(&dev->ccbq, (union ccb *)ccb_h);
5044 sim->devq->send_active--;
5045 sim->devq->send_openings++;
5048 if (((dev->flags & CAM_DEV_REL_ON_QUEUE_EMPTY) != 0
5049 && (dev->ccbq.dev_active == 0))) {
5050 dev->flags &= ~CAM_DEV_REL_ON_QUEUE_EMPTY;
5051 xpt_release_devq(ccb_h->path, /*count*/1,
5052 /*run_queue*/FALSE);
5055 if (((dev->flags & CAM_DEV_REL_ON_COMPLETE) != 0
5056 && (ccb_h->status&CAM_STATUS_MASK) != CAM_REQUEUE_REQ)) {
5057 dev->flags &= ~CAM_DEV_REL_ON_COMPLETE;
5058 xpt_release_devq(ccb_h->path, /*count*/1,
5059 /*run_queue*/FALSE);
5062 if ((dev->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
5063 && (--dev->tag_delay_count == 0))
5064 xpt_start_tags(ccb_h->path);
5065 if (!device_is_queued(dev)) {
5066 (void)xpt_schedule_devq(sim->devq, dev);
5070 if (ccb_h->status & CAM_RELEASE_SIMQ) {
5071 xpt_release_simq(sim, /*run_queue*/TRUE);
5072 ccb_h->status &= ~CAM_RELEASE_SIMQ;
5076 if ((ccb_h->flags & CAM_DEV_QFRZDIS)
5077 && (ccb_h->status & CAM_DEV_QFRZN)) {
5078 xpt_release_devq(ccb_h->path, /*count*/1,
5080 ccb_h->status &= ~CAM_DEV_QFRZN;
5082 xpt_run_devq(sim->devq);
5085 /* Call the peripheral driver's callback */
5086 (*ccb_h->cbfcnp)(ccb_h->path->periph, (union ccb *)ccb_h);