2 * Common functions for CAM "type" (peripheral) drivers.
4 * Copyright (c) 1997, 1998 Justin T. Gibbs.
5 * Copyright (c) 1997, 1998, 1999, 2000 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>
34 #include <sys/systm.h>
35 #include <sys/types.h>
36 #include <sys/malloc.h>
37 #include <sys/kernel.h>
40 #include <sys/mutex.h>
43 #include <sys/devicestat.h>
47 #include <vm/vm_extern.h>
50 #include <cam/cam_ccb.h>
51 #include <cam/cam_queue.h>
52 #include <cam/cam_xpt_periph.h>
53 #include <cam/cam_periph.h>
54 #include <cam/cam_debug.h>
55 #include <cam/cam_sim.h>
57 #include <cam/scsi/scsi_all.h>
58 #include <cam/scsi/scsi_message.h>
59 #include <cam/scsi/scsi_pass.h>
61 static u_int camperiphnextunit(struct periph_driver *p_drv,
62 u_int newunit, int wired,
63 path_id_t pathid, target_id_t target,
65 static u_int camperiphunit(struct periph_driver *p_drv,
66 path_id_t pathid, target_id_t target,
68 static void camperiphdone(struct cam_periph *periph,
70 static void camperiphfree(struct cam_periph *periph);
71 static int camperiphscsistatuserror(union ccb *ccb,
74 u_int32_t sense_flags,
76 u_int32_t *relsim_flags,
79 const char **action_string);
80 static int camperiphscsisenseerror(union ccb *ccb,
83 u_int32_t sense_flags,
85 u_int32_t *relsim_flags,
88 const char **action_string);
89 static void cam_periph_devctl_notify(union ccb *ccb);
91 static int nperiph_drivers;
92 static int initialized = 0;
93 struct periph_driver **periph_drivers;
95 static MALLOC_DEFINE(M_CAMPERIPH, "CAM periph", "CAM peripheral buffers");
97 static int periph_selto_delay = 1000;
98 TUNABLE_INT("kern.cam.periph_selto_delay", &periph_selto_delay);
99 static int periph_noresrc_delay = 500;
100 TUNABLE_INT("kern.cam.periph_noresrc_delay", &periph_noresrc_delay);
101 static int periph_busy_delay = 500;
102 TUNABLE_INT("kern.cam.periph_busy_delay", &periph_busy_delay);
106 periphdriver_register(void *data)
108 struct periph_driver *drv = (struct periph_driver *)data;
109 struct periph_driver **newdrivers, **old;
113 ndrivers = nperiph_drivers + 2;
114 newdrivers = malloc(sizeof(*newdrivers) * ndrivers, M_CAMPERIPH,
117 if (ndrivers != nperiph_drivers + 2) {
119 * Lost race against itself; go around.
122 free(newdrivers, M_CAMPERIPH);
126 bcopy(periph_drivers, newdrivers,
127 sizeof(*newdrivers) * nperiph_drivers);
128 newdrivers[nperiph_drivers] = drv;
129 newdrivers[nperiph_drivers + 1] = NULL;
130 old = periph_drivers;
131 periph_drivers = newdrivers;
135 free(old, M_CAMPERIPH);
136 /* If driver marked as early or it is late now, initialize it. */
137 if (((drv->flags & CAM_PERIPH_DRV_EARLY) != 0 && initialized > 0) ||
143 periphdriver_init(int level)
147 initialized = max(initialized, level);
148 for (i = 0; periph_drivers[i] != NULL; i++) {
149 early = (periph_drivers[i]->flags & CAM_PERIPH_DRV_EARLY) ? 1 : 2;
150 if (early == initialized)
151 (*periph_drivers[i]->init)();
156 cam_periph_alloc(periph_ctor_t *periph_ctor,
157 periph_oninv_t *periph_oninvalidate,
158 periph_dtor_t *periph_dtor, periph_start_t *periph_start,
159 char *name, cam_periph_type type, struct cam_path *path,
160 ac_callback_t *ac_callback, ac_code code, void *arg)
162 struct periph_driver **p_drv;
164 struct cam_periph *periph;
165 struct cam_periph *cur_periph;
167 target_id_t target_id;
174 * Handle Hot-Plug scenarios. If there is already a peripheral
175 * of our type assigned to this path, we are likely waiting for
176 * final close on an old, invalidated, peripheral. If this is
177 * the case, queue up a deferred call to the peripheral's async
178 * handler. If it looks like a mistaken re-allocation, complain.
180 if ((periph = cam_periph_find(path, name)) != NULL) {
182 if ((periph->flags & CAM_PERIPH_INVALID) != 0
183 && (periph->flags & CAM_PERIPH_NEW_DEV_FOUND) == 0) {
184 periph->flags |= CAM_PERIPH_NEW_DEV_FOUND;
185 periph->deferred_callback = ac_callback;
186 periph->deferred_ac = code;
187 return (CAM_REQ_INPROG);
189 printf("cam_periph_alloc: attempt to re-allocate "
190 "valid device %s%d rejected flags %#x "
191 "refcount %d\n", periph->periph_name,
192 periph->unit_number, periph->flags,
195 return (CAM_REQ_INVALID);
198 periph = (struct cam_periph *)malloc(sizeof(*periph), M_CAMPERIPH,
202 return (CAM_RESRC_UNAVAIL);
207 sim = xpt_path_sim(path);
208 path_id = xpt_path_path_id(path);
209 target_id = xpt_path_target_id(path);
210 lun_id = xpt_path_lun_id(path);
211 periph->periph_start = periph_start;
212 periph->periph_dtor = periph_dtor;
213 periph->periph_oninval = periph_oninvalidate;
215 periph->periph_name = name;
216 periph->scheduled_priority = CAM_PRIORITY_NONE;
217 periph->immediate_priority = CAM_PRIORITY_NONE;
218 periph->refcount = 1; /* Dropped by invalidation. */
220 SLIST_INIT(&periph->ccb_list);
221 status = xpt_create_path(&path, periph, path_id, target_id, lun_id);
222 if (status != CAM_REQ_CMP)
227 for (p_drv = periph_drivers; *p_drv != NULL; p_drv++) {
228 if (strcmp((*p_drv)->driver_name, name) == 0)
231 if (*p_drv == NULL) {
232 printf("cam_periph_alloc: invalid periph name '%s'\n", name);
234 xpt_free_path(periph->path);
235 free(periph, M_CAMPERIPH);
236 return (CAM_REQ_INVALID);
238 periph->unit_number = camperiphunit(*p_drv, path_id, target_id, lun_id);
239 cur_periph = TAILQ_FIRST(&(*p_drv)->units);
240 while (cur_periph != NULL
241 && cur_periph->unit_number < periph->unit_number)
242 cur_periph = TAILQ_NEXT(cur_periph, unit_links);
243 if (cur_periph != NULL) {
244 KASSERT(cur_periph->unit_number != periph->unit_number, ("duplicate units on periph list"));
245 TAILQ_INSERT_BEFORE(cur_periph, periph, unit_links);
247 TAILQ_INSERT_TAIL(&(*p_drv)->units, periph, unit_links);
248 (*p_drv)->generation++;
254 status = xpt_add_periph(periph);
255 if (status != CAM_REQ_CMP)
259 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("Periph created\n"));
261 status = periph_ctor(periph, arg);
263 if (status == CAM_REQ_CMP)
267 switch (init_level) {
269 /* Initialized successfully */
272 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("Periph destroyed\n"));
273 xpt_remove_periph(periph);
277 TAILQ_REMOVE(&(*p_drv)->units, periph, unit_links);
279 xpt_free_path(periph->path);
282 free(periph, M_CAMPERIPH);
285 /* No cleanup to perform. */
288 panic("%s: Unknown init level", __func__);
294 * Find a peripheral structure with the specified path, target, lun,
295 * and (optionally) type. If the name is NULL, this function will return
296 * the first peripheral driver that matches the specified path.
299 cam_periph_find(struct cam_path *path, char *name)
301 struct periph_driver **p_drv;
302 struct cam_periph *periph;
305 for (p_drv = periph_drivers; *p_drv != NULL; p_drv++) {
307 if (name != NULL && (strcmp((*p_drv)->driver_name, name) != 0))
310 TAILQ_FOREACH(periph, &(*p_drv)->units, unit_links) {
311 if (xpt_path_comp(periph->path, path) == 0) {
313 cam_periph_assert(periph, MA_OWNED);
327 * Find peripheral driver instances attached to the specified path.
330 cam_periph_list(struct cam_path *path, struct sbuf *sb)
332 struct sbuf local_sb;
333 struct periph_driver **p_drv;
334 struct cam_periph *periph;
340 sbuf_new(&local_sb, NULL, sbuf_alloc_len, SBUF_FIXEDLEN);
343 for (p_drv = periph_drivers; *p_drv != NULL; p_drv++) {
345 TAILQ_FOREACH(periph, &(*p_drv)->units, unit_links) {
346 if (xpt_path_comp(periph->path, path) != 0)
349 if (sbuf_len(&local_sb) != 0)
350 sbuf_cat(&local_sb, ",");
352 sbuf_printf(&local_sb, "%s%d", periph->periph_name,
353 periph->unit_number);
355 if (sbuf_error(&local_sb) == ENOMEM) {
358 sbuf_delete(&local_sb);
365 sbuf_finish(&local_sb);
366 sbuf_cpy(sb, sbuf_data(&local_sb));
367 sbuf_delete(&local_sb);
372 cam_periph_acquire(struct cam_periph *periph)
376 status = CAM_REQ_CMP_ERR;
381 if ((periph->flags & CAM_PERIPH_INVALID) == 0) {
383 status = CAM_REQ_CMP;
391 cam_periph_doacquire(struct cam_periph *periph)
395 KASSERT(periph->refcount >= 1,
396 ("cam_periph_doacquire() with refcount == %d", periph->refcount));
402 cam_periph_release_locked_buses(struct cam_periph *periph)
405 cam_periph_assert(periph, MA_OWNED);
406 KASSERT(periph->refcount >= 1, ("periph->refcount >= 1"));
407 if (--periph->refcount == 0)
408 camperiphfree(periph);
412 cam_periph_release_locked(struct cam_periph *periph)
419 cam_periph_release_locked_buses(periph);
424 cam_periph_release(struct cam_periph *periph)
431 cam_periph_assert(periph, MA_NOTOWNED);
432 mtx = cam_periph_mtx(periph);
434 cam_periph_release_locked(periph);
439 cam_periph_hold(struct cam_periph *periph, int priority)
444 * Increment the reference count on the peripheral
445 * while we wait for our lock attempt to succeed
446 * to ensure the peripheral doesn't disappear out
447 * from user us while we sleep.
450 if (cam_periph_acquire(periph) != CAM_REQ_CMP)
453 cam_periph_assert(periph, MA_OWNED);
454 while ((periph->flags & CAM_PERIPH_LOCKED) != 0) {
455 periph->flags |= CAM_PERIPH_LOCK_WANTED;
456 if ((error = cam_periph_sleep(periph, periph, priority,
457 "caplck", 0)) != 0) {
458 cam_periph_release_locked(periph);
461 if (periph->flags & CAM_PERIPH_INVALID) {
462 cam_periph_release_locked(periph);
467 periph->flags |= CAM_PERIPH_LOCKED;
472 cam_periph_unhold(struct cam_periph *periph)
475 cam_periph_assert(periph, MA_OWNED);
477 periph->flags &= ~CAM_PERIPH_LOCKED;
478 if ((periph->flags & CAM_PERIPH_LOCK_WANTED) != 0) {
479 periph->flags &= ~CAM_PERIPH_LOCK_WANTED;
483 cam_periph_release_locked(periph);
487 * Look for the next unit number that is not currently in use for this
488 * peripheral type starting at "newunit". Also exclude unit numbers that
489 * are reserved by for future "hardwiring" unless we already know that this
490 * is a potential wired device. Only assume that the device is "wired" the
491 * first time through the loop since after that we'll be looking at unit
492 * numbers that did not match a wiring entry.
495 camperiphnextunit(struct periph_driver *p_drv, u_int newunit, int wired,
496 path_id_t pathid, target_id_t target, lun_id_t lun)
498 struct cam_periph *periph;
500 int i, val, dunit, r;
501 const char *dname, *strval;
503 periph_name = p_drv->driver_name;
506 for (periph = TAILQ_FIRST(&p_drv->units);
507 periph != NULL && periph->unit_number != newunit;
508 periph = TAILQ_NEXT(periph, unit_links))
511 if (periph != NULL && periph->unit_number == newunit) {
513 xpt_print(periph->path, "Duplicate Wired "
515 xpt_print(periph->path, "Second device (%s "
516 "device at scbus%d target %d lun %d) will "
517 "not be wired\n", periph_name, pathid,
527 * Don't match entries like "da 4" as a wired down
528 * device, but do match entries like "da 4 target 5"
529 * or even "da 4 scbus 1".
534 r = resource_find_dev(&i, dname, &dunit, NULL, NULL);
537 /* if no "target" and no specific scbus, skip */
538 if (resource_int_value(dname, dunit, "target", &val) &&
539 (resource_string_value(dname, dunit, "at",&strval)||
540 strcmp(strval, "scbus") == 0))
542 if (newunit == dunit)
552 camperiphunit(struct periph_driver *p_drv, path_id_t pathid,
553 target_id_t target, lun_id_t lun)
556 int wired, i, val, dunit;
557 const char *dname, *strval;
558 char pathbuf[32], *periph_name;
560 periph_name = p_drv->driver_name;
561 snprintf(pathbuf, sizeof(pathbuf), "scbus%d", pathid);
565 for (wired = 0; resource_find_dev(&i, dname, &dunit, NULL, NULL) == 0;
567 if (resource_string_value(dname, dunit, "at", &strval) == 0) {
568 if (strcmp(strval, pathbuf) != 0)
572 if (resource_int_value(dname, dunit, "target", &val) == 0) {
577 if (resource_int_value(dname, dunit, "lun", &val) == 0) {
589 * Either start from 0 looking for the next unit or from
590 * the unit number given in the resource config. This way,
591 * if we have wildcard matches, we don't return the same
594 unit = camperiphnextunit(p_drv, unit, wired, pathid, target, lun);
600 cam_periph_invalidate(struct cam_periph *periph)
603 cam_periph_assert(periph, MA_OWNED);
605 * We only call this routine the first time a peripheral is
608 if ((periph->flags & CAM_PERIPH_INVALID) != 0)
611 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("Periph invalidated\n"));
612 if ((periph->flags & CAM_PERIPH_ANNOUNCED) && !rebooting)
613 xpt_denounce_periph(periph);
614 periph->flags |= CAM_PERIPH_INVALID;
615 periph->flags &= ~CAM_PERIPH_NEW_DEV_FOUND;
616 if (periph->periph_oninval != NULL)
617 periph->periph_oninval(periph);
618 cam_periph_release_locked(periph);
622 camperiphfree(struct cam_periph *periph)
624 struct periph_driver **p_drv;
626 cam_periph_assert(periph, MA_OWNED);
627 KASSERT(periph->periph_allocating == 0, ("%s%d: freed while allocating",
628 periph->periph_name, periph->unit_number));
629 for (p_drv = periph_drivers; *p_drv != NULL; p_drv++) {
630 if (strcmp((*p_drv)->driver_name, periph->periph_name) == 0)
633 if (*p_drv == NULL) {
634 printf("camperiphfree: attempt to free non-existant periph\n");
639 * We need to set this flag before dropping the topology lock, to
640 * let anyone who is traversing the list that this peripheral is
641 * about to be freed, and there will be no more reference count
644 periph->flags |= CAM_PERIPH_FREE;
647 * The peripheral destructor semantics dictate calling with only the
648 * SIM mutex held. Since it might sleep, it should not be called
649 * with the topology lock held.
654 * We need to call the peripheral destructor prior to removing the
655 * peripheral from the list. Otherwise, we risk running into a
656 * scenario where the peripheral unit number may get reused
657 * (because it has been removed from the list), but some resources
658 * used by the peripheral are still hanging around. In particular,
659 * the devfs nodes used by some peripherals like the pass(4) driver
660 * aren't fully cleaned up until the destructor is run. If the
661 * unit number is reused before the devfs instance is fully gone,
664 if (periph->periph_dtor != NULL)
665 periph->periph_dtor(periph);
668 * The peripheral list is protected by the topology lock.
672 TAILQ_REMOVE(&(*p_drv)->units, periph, unit_links);
673 (*p_drv)->generation++;
675 xpt_remove_periph(periph);
678 if ((periph->flags & CAM_PERIPH_ANNOUNCED) && !rebooting)
679 xpt_print(periph->path, "Periph destroyed\n");
681 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("Periph destroyed\n"));
683 if (periph->flags & CAM_PERIPH_NEW_DEV_FOUND) {
687 switch (periph->deferred_ac) {
688 case AC_FOUND_DEVICE:
689 ccb.ccb_h.func_code = XPT_GDEV_TYPE;
690 xpt_setup_ccb(&ccb.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
694 case AC_PATH_REGISTERED:
695 ccb.ccb_h.func_code = XPT_PATH_INQ;
696 xpt_setup_ccb(&ccb.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
704 periph->deferred_callback(NULL, periph->deferred_ac,
707 xpt_free_path(periph->path);
708 free(periph, M_CAMPERIPH);
713 * Map user virtual pointers into kernel virtual address space, so we can
714 * access the memory. This is now a generic function that centralizes most
715 * of the sanity checks on the data flags, if any.
716 * This also only works for up to MAXPHYS memory. Since we use
717 * buffers to map stuff in and out, we're limited to the buffer size.
720 cam_periph_mapmem(union ccb *ccb, struct cam_periph_map_info *mapinfo,
724 int flags[CAM_PERIPH_MAXMAPS];
725 u_int8_t **data_ptrs[CAM_PERIPH_MAXMAPS];
726 u_int32_t lengths[CAM_PERIPH_MAXMAPS];
727 u_int32_t dirs[CAM_PERIPH_MAXMAPS];
730 maxmap = DFLTPHYS; /* traditional default */
731 else if (maxmap > MAXPHYS)
732 maxmap = MAXPHYS; /* for safety */
733 switch(ccb->ccb_h.func_code) {
735 if (ccb->cdm.match_buf_len == 0) {
736 printf("cam_periph_mapmem: invalid match buffer "
740 if (ccb->cdm.pattern_buf_len > 0) {
741 data_ptrs[0] = (u_int8_t **)&ccb->cdm.patterns;
742 lengths[0] = ccb->cdm.pattern_buf_len;
743 dirs[0] = CAM_DIR_OUT;
744 data_ptrs[1] = (u_int8_t **)&ccb->cdm.matches;
745 lengths[1] = ccb->cdm.match_buf_len;
746 dirs[1] = CAM_DIR_IN;
749 data_ptrs[0] = (u_int8_t **)&ccb->cdm.matches;
750 lengths[0] = ccb->cdm.match_buf_len;
751 dirs[0] = CAM_DIR_IN;
755 * This request will not go to the hardware, no reason
756 * to be so strict. vmapbuf() is able to map up to MAXPHYS.
761 case XPT_CONT_TARGET_IO:
762 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_NONE)
764 if ((ccb->ccb_h.flags & CAM_DATA_MASK) != CAM_DATA_VADDR)
766 data_ptrs[0] = &ccb->csio.data_ptr;
767 lengths[0] = ccb->csio.dxfer_len;
768 dirs[0] = ccb->ccb_h.flags & CAM_DIR_MASK;
772 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_NONE)
774 if ((ccb->ccb_h.flags & CAM_DATA_MASK) != CAM_DATA_VADDR)
776 data_ptrs[0] = &ccb->ataio.data_ptr;
777 lengths[0] = ccb->ataio.dxfer_len;
778 dirs[0] = ccb->ccb_h.flags & CAM_DIR_MASK;
782 data_ptrs[0] = &ccb->smpio.smp_request;
783 lengths[0] = ccb->smpio.smp_request_len;
784 dirs[0] = CAM_DIR_OUT;
785 data_ptrs[1] = &ccb->smpio.smp_response;
786 lengths[1] = ccb->smpio.smp_response_len;
787 dirs[1] = CAM_DIR_IN;
790 case XPT_DEV_ADVINFO:
791 if (ccb->cdai.bufsiz == 0)
794 data_ptrs[0] = (uint8_t **)&ccb->cdai.buf;
795 lengths[0] = ccb->cdai.bufsiz;
796 dirs[0] = CAM_DIR_IN;
800 * This request will not go to the hardware, no reason
801 * to be so strict. vmapbuf() is able to map up to MAXPHYS.
807 break; /* NOTREACHED */
811 * Check the transfer length and permissions first, so we don't
812 * have to unmap any previously mapped buffers.
814 for (i = 0; i < numbufs; i++) {
819 * The userland data pointer passed in may not be page
820 * aligned. vmapbuf() truncates the address to a page
821 * boundary, so if the address isn't page aligned, we'll
822 * need enough space for the given transfer length, plus
823 * whatever extra space is necessary to make it to the page
827 (((vm_offset_t)(*data_ptrs[i])) & PAGE_MASK)) > maxmap){
828 printf("cam_periph_mapmem: attempt to map %lu bytes, "
829 "which is greater than %lu\n",
831 (((vm_offset_t)(*data_ptrs[i])) & PAGE_MASK)),
836 if (dirs[i] & CAM_DIR_OUT) {
837 flags[i] = BIO_WRITE;
840 if (dirs[i] & CAM_DIR_IN) {
847 * This keeps the the kernel stack of current thread from getting
848 * swapped. In low-memory situations where the kernel stack might
849 * otherwise get swapped out, this holds it and allows the thread
850 * to make progress and release the kernel mapped pages sooner.
852 * XXX KDM should I use P_NOSWAP instead?
856 for (i = 0; i < numbufs; i++) {
860 mapinfo->bp[i] = getpbuf(NULL);
862 /* put our pointer in the data slot */
863 mapinfo->bp[i]->b_data = *data_ptrs[i];
865 /* save the user's data address */
866 mapinfo->bp[i]->b_caller1 = *data_ptrs[i];
868 /* set the transfer length, we know it's < MAXPHYS */
869 mapinfo->bp[i]->b_bufsize = lengths[i];
871 /* set the direction */
872 mapinfo->bp[i]->b_iocmd = flags[i];
875 * Map the buffer into kernel memory.
877 * Note that useracc() alone is not a sufficient test.
878 * vmapbuf() can still fail due to a smaller file mapped
879 * into a larger area of VM, or if userland races against
880 * vmapbuf() after the useracc() check.
882 if (vmapbuf(mapinfo->bp[i], 1) < 0) {
883 for (j = 0; j < i; ++j) {
884 *data_ptrs[j] = mapinfo->bp[j]->b_caller1;
885 vunmapbuf(mapinfo->bp[j]);
886 relpbuf(mapinfo->bp[j], NULL);
888 relpbuf(mapinfo->bp[i], NULL);
893 /* set our pointer to the new mapped area */
894 *data_ptrs[i] = mapinfo->bp[i]->b_data;
896 mapinfo->num_bufs_used++;
900 * Now that we've gotten this far, change ownership to the kernel
901 * of the buffers so that we don't run afoul of returning to user
902 * space with locks (on the buffer) held.
904 for (i = 0; i < numbufs; i++) {
905 BUF_KERNPROC(mapinfo->bp[i]);
913 * Unmap memory segments mapped into kernel virtual address space by
914 * cam_periph_mapmem().
917 cam_periph_unmapmem(union ccb *ccb, struct cam_periph_map_info *mapinfo)
920 u_int8_t **data_ptrs[CAM_PERIPH_MAXMAPS];
922 if (mapinfo->num_bufs_used <= 0) {
923 /* nothing to free and the process wasn't held. */
927 switch (ccb->ccb_h.func_code) {
929 numbufs = min(mapinfo->num_bufs_used, 2);
932 data_ptrs[0] = (u_int8_t **)&ccb->cdm.matches;
934 data_ptrs[0] = (u_int8_t **)&ccb->cdm.patterns;
935 data_ptrs[1] = (u_int8_t **)&ccb->cdm.matches;
939 case XPT_CONT_TARGET_IO:
940 data_ptrs[0] = &ccb->csio.data_ptr;
941 numbufs = min(mapinfo->num_bufs_used, 1);
944 data_ptrs[0] = &ccb->ataio.data_ptr;
945 numbufs = min(mapinfo->num_bufs_used, 1);
948 numbufs = min(mapinfo->num_bufs_used, 2);
949 data_ptrs[0] = &ccb->smpio.smp_request;
950 data_ptrs[1] = &ccb->smpio.smp_response;
952 case XPT_DEV_ADVINFO:
953 numbufs = min(mapinfo->num_bufs_used, 1);
954 data_ptrs[0] = (uint8_t **)&ccb->cdai.buf;
957 /* allow ourselves to be swapped once again */
960 break; /* NOTREACHED */
963 for (i = 0; i < numbufs; i++) {
964 /* Set the user's pointer back to the original value */
965 *data_ptrs[i] = mapinfo->bp[i]->b_caller1;
967 /* unmap the buffer */
968 vunmapbuf(mapinfo->bp[i]);
970 /* release the buffer */
971 relpbuf(mapinfo->bp[i], NULL);
974 /* allow ourselves to be swapped once again */
979 cam_periph_ccbwait(union ccb *ccb)
982 if ((ccb->ccb_h.pinfo.index != CAM_UNQUEUED_INDEX)
983 || ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INPROG))
984 xpt_path_sleep(ccb->ccb_h.path, &ccb->ccb_h.cbfcnp, PRIBIO,
989 cam_periph_ioctl(struct cam_periph *periph, u_long cmd, caddr_t addr,
990 int (*error_routine)(union ccb *ccb,
992 u_int32_t sense_flags))
1001 case CAMGETPASSTHRU:
1002 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
1003 xpt_setup_ccb(&ccb->ccb_h,
1005 CAM_PRIORITY_NORMAL);
1006 ccb->ccb_h.func_code = XPT_GDEVLIST;
1009 * Basically, the point of this is that we go through
1010 * getting the list of devices, until we find a passthrough
1011 * device. In the current version of the CAM code, the
1012 * only way to determine what type of device we're dealing
1013 * with is by its name.
1015 while (found == 0) {
1016 ccb->cgdl.index = 0;
1017 ccb->cgdl.status = CAM_GDEVLIST_MORE_DEVS;
1018 while (ccb->cgdl.status == CAM_GDEVLIST_MORE_DEVS) {
1020 /* we want the next device in the list */
1022 if (strncmp(ccb->cgdl.periph_name,
1028 if ((ccb->cgdl.status == CAM_GDEVLIST_LAST_DEVICE) &&
1030 ccb->cgdl.periph_name[0] = '\0';
1031 ccb->cgdl.unit_number = 0;
1036 /* copy the result back out */
1037 bcopy(ccb, addr, sizeof(union ccb));
1039 /* and release the ccb */
1040 xpt_release_ccb(ccb);
1051 cam_periph_done(struct cam_periph *periph, union ccb *done_ccb)
1054 /* Caller will release the CCB */
1055 wakeup(&done_ccb->ccb_h.cbfcnp);
1059 cam_periph_runccb(union ccb *ccb,
1060 int (*error_routine)(union ccb *ccb,
1062 u_int32_t sense_flags),
1063 cam_flags camflags, u_int32_t sense_flags,
1066 struct bintime *starttime;
1067 struct bintime ltime;
1071 xpt_path_assert(ccb->ccb_h.path, MA_OWNED);
1074 * If the user has supplied a stats structure, and if we understand
1075 * this particular type of ccb, record the transaction start.
1077 if ((ds != NULL) && (ccb->ccb_h.func_code == XPT_SCSI_IO ||
1078 ccb->ccb_h.func_code == XPT_ATA_IO)) {
1080 binuptime(starttime);
1081 devstat_start_transaction(ds, starttime);
1084 ccb->ccb_h.cbfcnp = cam_periph_done;
1088 cam_periph_ccbwait(ccb);
1089 if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP)
1091 else if (error_routine != NULL)
1092 error = (*error_routine)(ccb, camflags, sense_flags);
1096 } while (error == ERESTART);
1098 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1099 cam_release_devq(ccb->ccb_h.path,
1100 /* relsim_flags */0,
1103 /* getcount_only */ FALSE);
1104 ccb->ccb_h.status &= ~CAM_DEV_QFRZN;
1108 if (ccb->ccb_h.func_code == XPT_SCSI_IO) {
1109 devstat_end_transaction(ds,
1110 ccb->csio.dxfer_len - ccb->csio.resid,
1111 ccb->csio.tag_action & 0x3,
1112 ((ccb->ccb_h.flags & CAM_DIR_MASK) ==
1113 CAM_DIR_NONE) ? DEVSTAT_NO_DATA :
1114 (ccb->ccb_h.flags & CAM_DIR_OUT) ?
1116 DEVSTAT_READ, NULL, starttime);
1117 } else if (ccb->ccb_h.func_code == XPT_ATA_IO) {
1118 devstat_end_transaction(ds,
1119 ccb->ataio.dxfer_len - ccb->ataio.resid,
1120 0, /* Not used in ATA */
1121 ((ccb->ccb_h.flags & CAM_DIR_MASK) ==
1122 CAM_DIR_NONE) ? DEVSTAT_NO_DATA :
1123 (ccb->ccb_h.flags & CAM_DIR_OUT) ?
1125 DEVSTAT_READ, NULL, starttime);
1133 cam_freeze_devq(struct cam_path *path)
1135 struct ccb_hdr ccb_h;
1137 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("cam_freeze_devq\n"));
1138 xpt_setup_ccb(&ccb_h, path, /*priority*/1);
1139 ccb_h.func_code = XPT_NOOP;
1140 ccb_h.flags = CAM_DEV_QFREEZE;
1141 xpt_action((union ccb *)&ccb_h);
1145 cam_release_devq(struct cam_path *path, u_int32_t relsim_flags,
1146 u_int32_t openings, u_int32_t arg,
1149 struct ccb_relsim crs;
1151 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("cam_release_devq(%u, %u, %u, %d)\n",
1152 relsim_flags, openings, arg, getcount_only));
1153 xpt_setup_ccb(&crs.ccb_h, path, CAM_PRIORITY_NORMAL);
1154 crs.ccb_h.func_code = XPT_REL_SIMQ;
1155 crs.ccb_h.flags = getcount_only ? CAM_DEV_QFREEZE : 0;
1156 crs.release_flags = relsim_flags;
1157 crs.openings = openings;
1158 crs.release_timeout = arg;
1159 xpt_action((union ccb *)&crs);
1160 return (crs.qfrozen_cnt);
1163 #define saved_ccb_ptr ppriv_ptr0
1165 camperiphdone(struct cam_periph *periph, union ccb *done_ccb)
1167 union ccb *saved_ccb;
1169 struct scsi_start_stop_unit *scsi_cmd;
1170 int error_code, sense_key, asc, ascq;
1172 scsi_cmd = (struct scsi_start_stop_unit *)
1173 &done_ccb->csio.cdb_io.cdb_bytes;
1174 status = done_ccb->ccb_h.status;
1176 if ((status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1177 if (scsi_extract_sense_ccb(done_ccb,
1178 &error_code, &sense_key, &asc, &ascq)) {
1180 * If the error is "invalid field in CDB",
1181 * and the load/eject flag is set, turn the
1182 * flag off and try again. This is just in
1183 * case the drive in question barfs on the
1184 * load eject flag. The CAM code should set
1185 * the load/eject flag by default for
1188 if ((scsi_cmd->opcode == START_STOP_UNIT) &&
1189 ((scsi_cmd->how & SSS_LOEJ) != 0) &&
1190 (asc == 0x24) && (ascq == 0x00)) {
1191 scsi_cmd->how &= ~SSS_LOEJ;
1192 if (status & CAM_DEV_QFRZN) {
1193 cam_release_devq(done_ccb->ccb_h.path,
1195 done_ccb->ccb_h.status &=
1198 xpt_action(done_ccb);
1202 if (cam_periph_error(done_ccb,
1203 0, SF_RETRY_UA | SF_NO_PRINT, NULL) == ERESTART)
1205 if (done_ccb->ccb_h.status & CAM_DEV_QFRZN) {
1206 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0);
1207 done_ccb->ccb_h.status &= ~CAM_DEV_QFRZN;
1211 * If we have successfully taken a device from the not
1212 * ready to ready state, re-scan the device and re-get
1213 * the inquiry information. Many devices (mostly disks)
1214 * don't properly report their inquiry information unless
1217 if (scsi_cmd->opcode == START_STOP_UNIT)
1218 xpt_async(AC_INQ_CHANGED, done_ccb->ccb_h.path, NULL);
1222 * Perform the final retry with the original CCB so that final
1223 * error processing is performed by the owner of the CCB.
1225 saved_ccb = (union ccb *)done_ccb->ccb_h.saved_ccb_ptr;
1226 bcopy(saved_ccb, done_ccb, sizeof(*done_ccb));
1227 xpt_free_ccb(saved_ccb);
1228 if (done_ccb->ccb_h.cbfcnp != camperiphdone)
1229 periph->flags &= ~CAM_PERIPH_RECOVERY_INPROG;
1230 xpt_action(done_ccb);
1233 /* Drop freeze taken due to CAM_DEV_QFREEZE flag set. */
1234 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0);
1238 * Generic Async Event handler. Peripheral drivers usually
1239 * filter out the events that require personal attention,
1240 * and leave the rest to this function.
1243 cam_periph_async(struct cam_periph *periph, u_int32_t code,
1244 struct cam_path *path, void *arg)
1247 case AC_LOST_DEVICE:
1248 cam_periph_invalidate(periph);
1256 cam_periph_bus_settle(struct cam_periph *periph, u_int bus_settle)
1258 struct ccb_getdevstats cgds;
1260 xpt_setup_ccb(&cgds.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
1261 cgds.ccb_h.func_code = XPT_GDEV_STATS;
1262 xpt_action((union ccb *)&cgds);
1263 cam_periph_freeze_after_event(periph, &cgds.last_reset, bus_settle);
1267 cam_periph_freeze_after_event(struct cam_periph *periph,
1268 struct timeval* event_time, u_int duration_ms)
1270 struct timeval delta;
1271 struct timeval duration_tv;
1273 if (!timevalisset(event_time))
1277 timevalsub(&delta, event_time);
1278 duration_tv.tv_sec = duration_ms / 1000;
1279 duration_tv.tv_usec = (duration_ms % 1000) * 1000;
1280 if (timevalcmp(&delta, &duration_tv, <)) {
1281 timevalsub(&duration_tv, &delta);
1283 duration_ms = duration_tv.tv_sec * 1000;
1284 duration_ms += duration_tv.tv_usec / 1000;
1285 cam_freeze_devq(periph->path);
1286 cam_release_devq(periph->path,
1287 RELSIM_RELEASE_AFTER_TIMEOUT,
1289 /*timeout*/duration_ms,
1290 /*getcount_only*/0);
1296 camperiphscsistatuserror(union ccb *ccb, union ccb **orig_ccb,
1297 cam_flags camflags, u_int32_t sense_flags,
1298 int *openings, u_int32_t *relsim_flags,
1299 u_int32_t *timeout, u_int32_t *action, const char **action_string)
1303 switch (ccb->csio.scsi_status) {
1304 case SCSI_STATUS_OK:
1305 case SCSI_STATUS_COND_MET:
1306 case SCSI_STATUS_INTERMED:
1307 case SCSI_STATUS_INTERMED_COND_MET:
1310 case SCSI_STATUS_CMD_TERMINATED:
1311 case SCSI_STATUS_CHECK_COND:
1312 error = camperiphscsisenseerror(ccb, orig_ccb,
1321 case SCSI_STATUS_QUEUE_FULL:
1324 struct ccb_getdevstats cgds;
1327 * First off, find out what the current
1328 * transaction counts are.
1330 xpt_setup_ccb(&cgds.ccb_h,
1332 CAM_PRIORITY_NORMAL);
1333 cgds.ccb_h.func_code = XPT_GDEV_STATS;
1334 xpt_action((union ccb *)&cgds);
1337 * If we were the only transaction active, treat
1338 * the QUEUE FULL as if it were a BUSY condition.
1340 if (cgds.dev_active != 0) {
1344 * Reduce the number of openings to
1345 * be 1 less than the amount it took
1346 * to get a queue full bounded by the
1347 * minimum allowed tag count for this
1350 total_openings = cgds.dev_active + cgds.dev_openings;
1351 *openings = cgds.dev_active;
1352 if (*openings < cgds.mintags)
1353 *openings = cgds.mintags;
1354 if (*openings < total_openings)
1355 *relsim_flags = RELSIM_ADJUST_OPENINGS;
1358 * Some devices report queue full for
1359 * temporary resource shortages. For
1360 * this reason, we allow a minimum
1361 * tag count to be entered via a
1362 * quirk entry to prevent the queue
1363 * count on these devices from falling
1364 * to a pessimisticly low value. We
1365 * still wait for the next successful
1366 * completion, however, before queueing
1367 * more transactions to the device.
1369 *relsim_flags = RELSIM_RELEASE_AFTER_CMDCMPLT;
1373 *action &= ~SSQ_PRINT_SENSE;
1378 case SCSI_STATUS_BUSY:
1380 * Restart the queue after either another
1381 * command completes or a 1 second timeout.
1383 if ((sense_flags & SF_RETRY_BUSY) != 0 ||
1384 (ccb->ccb_h.retry_count--) > 0) {
1386 *relsim_flags = RELSIM_RELEASE_AFTER_TIMEOUT
1387 | RELSIM_RELEASE_AFTER_CMDCMPLT;
1393 case SCSI_STATUS_RESERV_CONFLICT:
1402 camperiphscsisenseerror(union ccb *ccb, union ccb **orig,
1403 cam_flags camflags, u_int32_t sense_flags,
1404 int *openings, u_int32_t *relsim_flags,
1405 u_int32_t *timeout, u_int32_t *action, const char **action_string)
1407 struct cam_periph *periph;
1408 union ccb *orig_ccb = ccb;
1409 int error, recoveryccb;
1411 periph = xpt_path_periph(ccb->ccb_h.path);
1412 recoveryccb = (ccb->ccb_h.cbfcnp == camperiphdone);
1413 if ((periph->flags & CAM_PERIPH_RECOVERY_INPROG) && !recoveryccb) {
1415 * If error recovery is already in progress, don't attempt
1416 * to process this error, but requeue it unconditionally
1417 * and attempt to process it once error recovery has
1418 * completed. This failed command is probably related to
1419 * the error that caused the currently active error recovery
1420 * action so our current recovery efforts should also
1421 * address this command. Be aware that the error recovery
1422 * code assumes that only one recovery action is in progress
1423 * on a particular peripheral instance at any given time
1424 * (e.g. only one saved CCB for error recovery) so it is
1425 * imperitive that we don't violate this assumption.
1428 *action &= ~SSQ_PRINT_SENSE;
1430 scsi_sense_action err_action;
1431 struct ccb_getdev cgd;
1434 * Grab the inquiry data for this device.
1436 xpt_setup_ccb(&cgd.ccb_h, ccb->ccb_h.path, CAM_PRIORITY_NORMAL);
1437 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1438 xpt_action((union ccb *)&cgd);
1440 err_action = scsi_error_action(&ccb->csio, &cgd.inq_data,
1442 error = err_action & SS_ERRMASK;
1445 * Do not autostart sequential access devices
1446 * to avoid unexpected tape loading.
1448 if ((err_action & SS_MASK) == SS_START &&
1449 SID_TYPE(&cgd.inq_data) == T_SEQUENTIAL) {
1450 *action_string = "Will not autostart a "
1451 "sequential access device";
1452 goto sense_error_done;
1456 * Avoid recovery recursion if recovery action is the same.
1458 if ((err_action & SS_MASK) >= SS_START && recoveryccb) {
1459 if (((err_action & SS_MASK) == SS_START &&
1460 ccb->csio.cdb_io.cdb_bytes[0] == START_STOP_UNIT) ||
1461 ((err_action & SS_MASK) == SS_TUR &&
1462 (ccb->csio.cdb_io.cdb_bytes[0] == TEST_UNIT_READY))) {
1463 err_action = SS_RETRY|SSQ_DECREMENT_COUNT|EIO;
1464 *relsim_flags = RELSIM_RELEASE_AFTER_TIMEOUT;
1470 * If the recovery action will consume a retry,
1471 * make sure we actually have retries available.
1473 if ((err_action & SSQ_DECREMENT_COUNT) != 0) {
1474 if (ccb->ccb_h.retry_count > 0 &&
1475 (periph->flags & CAM_PERIPH_INVALID) == 0)
1476 ccb->ccb_h.retry_count--;
1478 *action_string = "Retries exhausted";
1479 goto sense_error_done;
1483 if ((err_action & SS_MASK) >= SS_START) {
1485 * Do common portions of commands that
1486 * use recovery CCBs.
1488 orig_ccb = xpt_alloc_ccb_nowait();
1489 if (orig_ccb == NULL) {
1490 *action_string = "Can't allocate recovery CCB";
1491 goto sense_error_done;
1494 * Clear freeze flag for original request here, as
1495 * this freeze will be dropped as part of ERESTART.
1497 ccb->ccb_h.status &= ~CAM_DEV_QFRZN;
1498 bcopy(ccb, orig_ccb, sizeof(*orig_ccb));
1501 switch (err_action & SS_MASK) {
1503 *action_string = "No recovery action needed";
1507 *action_string = "Retrying command (per sense data)";
1511 *action_string = "Unretryable error";
1518 * Send a start unit command to the device, and
1519 * then retry the command.
1521 *action_string = "Attempting to start unit";
1522 periph->flags |= CAM_PERIPH_RECOVERY_INPROG;
1525 * Check for removable media and set
1526 * load/eject flag appropriately.
1528 if (SID_IS_REMOVABLE(&cgd.inq_data))
1533 scsi_start_stop(&ccb->csio,
1547 * Send a Test Unit Ready to the device.
1548 * If the 'many' flag is set, we send 120
1549 * test unit ready commands, one every half
1550 * second. Otherwise, we just send one TUR.
1551 * We only want to do this if the retry
1552 * count has not been exhausted.
1556 if ((err_action & SSQ_MANY) != 0) {
1557 *action_string = "Polling device for readiness";
1560 *action_string = "Testing device for readiness";
1563 periph->flags |= CAM_PERIPH_RECOVERY_INPROG;
1564 scsi_test_unit_ready(&ccb->csio,
1572 * Accomplish our 500ms delay by deferring
1573 * the release of our device queue appropriately.
1575 *relsim_flags = RELSIM_RELEASE_AFTER_TIMEOUT;
1580 panic("Unhandled error action %x", err_action);
1583 if ((err_action & SS_MASK) >= SS_START) {
1585 * Drop the priority, so that the recovery
1586 * CCB is the first to execute. Freeze the queue
1587 * after this command is sent so that we can
1588 * restore the old csio and have it queued in
1589 * the proper order before we release normal
1590 * transactions to the device.
1592 ccb->ccb_h.pinfo.priority--;
1593 ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
1594 ccb->ccb_h.saved_ccb_ptr = orig_ccb;
1600 *action = err_action;
1606 * Generic error handler. Peripheral drivers usually filter
1607 * out the errors that they handle in a unique mannor, then
1608 * call this function.
1611 cam_periph_error(union ccb *ccb, cam_flags camflags,
1612 u_int32_t sense_flags, union ccb *save_ccb)
1614 struct cam_path *newpath;
1615 union ccb *orig_ccb, *scan_ccb;
1616 struct cam_periph *periph;
1617 const char *action_string;
1619 int frozen, error, openings, devctl_err;
1620 u_int32_t action, relsim_flags, timeout;
1622 action = SSQ_PRINT_SENSE;
1623 periph = xpt_path_periph(ccb->ccb_h.path);
1624 action_string = NULL;
1625 status = ccb->ccb_h.status;
1626 frozen = (status & CAM_DEV_QFRZN) != 0;
1627 status &= CAM_STATUS_MASK;
1628 devctl_err = openings = relsim_flags = timeout = 0;
1631 /* Filter the errors that should be reported via devctl */
1632 switch (ccb->ccb_h.status & CAM_STATUS_MASK) {
1633 case CAM_CMD_TIMEOUT:
1634 case CAM_REQ_ABORTED:
1635 case CAM_REQ_CMP_ERR:
1636 case CAM_REQ_TERMIO:
1637 case CAM_UNREC_HBA_ERROR:
1638 case CAM_DATA_RUN_ERR:
1639 case CAM_SCSI_STATUS_ERROR:
1640 case CAM_ATA_STATUS_ERROR:
1641 case CAM_SMP_STATUS_ERROR:
1651 action &= ~SSQ_PRINT_SENSE;
1653 case CAM_SCSI_STATUS_ERROR:
1654 error = camperiphscsistatuserror(ccb, &orig_ccb,
1655 camflags, sense_flags, &openings, &relsim_flags,
1656 &timeout, &action, &action_string);
1658 case CAM_AUTOSENSE_FAIL:
1659 error = EIO; /* we have to kill the command */
1663 case CAM_MSG_REJECT_REC:
1664 /* XXX Don't know that these are correct */
1667 case CAM_SEL_TIMEOUT:
1668 if ((camflags & CAM_RETRY_SELTO) != 0) {
1669 if (ccb->ccb_h.retry_count > 0 &&
1670 (periph->flags & CAM_PERIPH_INVALID) == 0) {
1671 ccb->ccb_h.retry_count--;
1675 * Wait a bit to give the device
1676 * time to recover before we try again.
1678 relsim_flags = RELSIM_RELEASE_AFTER_TIMEOUT;
1679 timeout = periph_selto_delay;
1682 action_string = "Retries exhausted";
1685 case CAM_DEV_NOT_THERE:
1689 case CAM_REQ_INVALID:
1690 case CAM_PATH_INVALID:
1692 case CAM_PROVIDE_FAIL:
1693 case CAM_REQ_TOO_BIG:
1694 case CAM_LUN_INVALID:
1695 case CAM_TID_INVALID:
1696 case CAM_FUNC_NOTAVAIL:
1699 case CAM_SCSI_BUS_RESET:
1702 * Commands that repeatedly timeout and cause these
1703 * kinds of error recovery actions, should return
1704 * CAM_CMD_TIMEOUT, which allows us to safely assume
1705 * that this command was an innocent bystander to
1706 * these events and should be unconditionally
1709 case CAM_REQUEUE_REQ:
1710 /* Unconditional requeue if device is still there */
1711 if (periph->flags & CAM_PERIPH_INVALID) {
1712 action_string = "Periph was invalidated";
1714 } else if (sense_flags & SF_NO_RETRY) {
1716 action_string = "Retry was blocked";
1719 action &= ~SSQ_PRINT_SENSE;
1722 case CAM_RESRC_UNAVAIL:
1723 /* Wait a bit for the resource shortage to abate. */
1724 timeout = periph_noresrc_delay;
1728 /* Wait a bit for the busy condition to abate. */
1729 timeout = periph_busy_delay;
1731 relsim_flags = RELSIM_RELEASE_AFTER_TIMEOUT;
1733 case CAM_ATA_STATUS_ERROR:
1734 case CAM_REQ_CMP_ERR:
1735 case CAM_CMD_TIMEOUT:
1736 case CAM_UNEXP_BUSFREE:
1737 case CAM_UNCOR_PARITY:
1738 case CAM_DATA_RUN_ERR:
1740 if (periph->flags & CAM_PERIPH_INVALID) {
1742 action_string = "Periph was invalidated";
1743 } else if (ccb->ccb_h.retry_count == 0) {
1745 action_string = "Retries exhausted";
1746 } else if (sense_flags & SF_NO_RETRY) {
1748 action_string = "Retry was blocked";
1750 ccb->ccb_h.retry_count--;
1756 if ((sense_flags & SF_PRINT_ALWAYS) ||
1757 CAM_DEBUGGED(ccb->ccb_h.path, CAM_DEBUG_INFO))
1758 action |= SSQ_PRINT_SENSE;
1759 else if (sense_flags & SF_NO_PRINT)
1760 action &= ~SSQ_PRINT_SENSE;
1761 if ((action & SSQ_PRINT_SENSE) != 0)
1762 cam_error_print(orig_ccb, CAM_ESF_ALL, CAM_EPF_ALL);
1763 if (error != 0 && (action & SSQ_PRINT_SENSE) != 0) {
1764 if (error != ERESTART) {
1765 if (action_string == NULL)
1766 action_string = "Unretryable error";
1767 xpt_print(ccb->ccb_h.path, "Error %d, %s\n",
1768 error, action_string);
1769 } else if (action_string != NULL)
1770 xpt_print(ccb->ccb_h.path, "%s\n", action_string);
1772 xpt_print(ccb->ccb_h.path, "Retrying command\n");
1776 cam_periph_devctl_notify(orig_ccb);
1778 if ((action & SSQ_LOST) != 0) {
1782 * For a selection timeout, we consider all of the LUNs on
1783 * the target to be gone. If the status is CAM_DEV_NOT_THERE,
1784 * then we only get rid of the device(s) specified by the
1785 * path in the original CCB.
1787 if (status == CAM_SEL_TIMEOUT)
1788 lun_id = CAM_LUN_WILDCARD;
1790 lun_id = xpt_path_lun_id(ccb->ccb_h.path);
1792 /* Should we do more if we can't create the path?? */
1793 if (xpt_create_path(&newpath, periph,
1794 xpt_path_path_id(ccb->ccb_h.path),
1795 xpt_path_target_id(ccb->ccb_h.path),
1796 lun_id) == CAM_REQ_CMP) {
1799 * Let peripheral drivers know that this
1800 * device has gone away.
1802 xpt_async(AC_LOST_DEVICE, newpath, NULL);
1803 xpt_free_path(newpath);
1807 /* Broadcast UNIT ATTENTIONs to all periphs. */
1808 if ((action & SSQ_UA) != 0)
1809 xpt_async(AC_UNIT_ATTENTION, orig_ccb->ccb_h.path, orig_ccb);
1811 /* Rescan target on "Reported LUNs data has changed" */
1812 if ((action & SSQ_RESCAN) != 0) {
1813 if (xpt_create_path(&newpath, NULL,
1814 xpt_path_path_id(ccb->ccb_h.path),
1815 xpt_path_target_id(ccb->ccb_h.path),
1816 CAM_LUN_WILDCARD) == CAM_REQ_CMP) {
1818 scan_ccb = xpt_alloc_ccb_nowait();
1819 if (scan_ccb != NULL) {
1820 scan_ccb->ccb_h.path = newpath;
1821 scan_ccb->ccb_h.func_code = XPT_SCAN_TGT;
1822 scan_ccb->crcn.flags = 0;
1823 xpt_rescan(scan_ccb);
1826 "Can't allocate CCB to rescan target\n");
1827 xpt_free_path(newpath);
1832 /* Attempt a retry */
1833 if (error == ERESTART || error == 0) {
1835 ccb->ccb_h.status &= ~CAM_DEV_QFRZN;
1836 if (error == ERESTART)
1839 cam_release_devq(ccb->ccb_h.path,
1843 /*getcount_only*/0);
1849 #define CAM_PERIPH_DEVD_MSG_SIZE 256
1852 cam_periph_devctl_notify(union ccb *ccb)
1854 struct cam_periph *periph;
1855 struct ccb_getdev *cgd;
1857 int serr, sk, asc, ascq;
1860 sbmsg = malloc(CAM_PERIPH_DEVD_MSG_SIZE, M_CAMPERIPH, M_NOWAIT);
1864 sbuf_new(&sb, sbmsg, CAM_PERIPH_DEVD_MSG_SIZE, SBUF_FIXEDLEN);
1866 periph = xpt_path_periph(ccb->ccb_h.path);
1867 sbuf_printf(&sb, "device=%s%d ", periph->periph_name,
1868 periph->unit_number);
1870 sbuf_printf(&sb, "serial=\"");
1871 if ((cgd = (struct ccb_getdev *)xpt_alloc_ccb_nowait()) != NULL) {
1872 xpt_setup_ccb(&cgd->ccb_h, ccb->ccb_h.path,
1873 CAM_PRIORITY_NORMAL);
1874 cgd->ccb_h.func_code = XPT_GDEV_TYPE;
1875 xpt_action((union ccb *)cgd);
1877 if (cgd->ccb_h.status == CAM_REQ_CMP)
1878 sbuf_bcat(&sb, cgd->serial_num, cgd->serial_num_len);
1880 sbuf_printf(&sb, "\" ");
1881 sbuf_printf(&sb, "cam_status=\"0x%x\" ", ccb->ccb_h.status);
1883 switch (ccb->ccb_h.status & CAM_STATUS_MASK) {
1884 case CAM_CMD_TIMEOUT:
1885 sbuf_printf(&sb, "timeout=%d ", ccb->ccb_h.timeout);
1888 case CAM_SCSI_STATUS_ERROR:
1889 sbuf_printf(&sb, "scsi_status=%d ", ccb->csio.scsi_status);
1890 if (scsi_extract_sense_ccb(ccb, &serr, &sk, &asc, &ascq))
1891 sbuf_printf(&sb, "scsi_sense=\"%02x %02x %02x %02x\" ",
1892 serr, sk, asc, ascq);
1895 case CAM_ATA_STATUS_ERROR:
1896 sbuf_printf(&sb, "RES=\"");
1897 ata_res_sbuf(&ccb->ataio.res, &sb);
1898 sbuf_printf(&sb, "\" ");
1906 if (ccb->ccb_h.func_code == XPT_SCSI_IO) {
1907 sbuf_printf(&sb, "CDB=\"");
1908 if ((ccb->ccb_h.flags & CAM_CDB_POINTER) != 0)
1909 scsi_cdb_sbuf(ccb->csio.cdb_io.cdb_ptr, &sb);
1911 scsi_cdb_sbuf(ccb->csio.cdb_io.cdb_bytes, &sb);
1912 sbuf_printf(&sb, "\" ");
1913 } else if (ccb->ccb_h.func_code == XPT_ATA_IO) {
1914 sbuf_printf(&sb, "ACB=\"");
1915 ata_cmd_sbuf(&ccb->ataio.cmd, &sb);
1916 sbuf_printf(&sb, "\" ");
1919 if (sbuf_finish(&sb) == 0)
1920 devctl_notify("CAM", "periph", type, sbuf_data(&sb));
1922 free(sbmsg, M_CAMPERIPH);