2 * Copyright (c) 2000 Matthew Jacob
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions, and the following disclaimer,
10 * without modification, immediately at the beginning of the file.
11 * 2. The name of the author may not be used to endorse or promote products
12 * derived from this software without specific prior written permission.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
18 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/param.h>
33 #include <sys/errno.h>
34 #include <sys/fcntl.h>
35 #include <sys/kernel.h>
36 #include <sys/kthread.h>
38 #include <sys/malloc.h>
39 #include <sys/mutex.h>
40 #include <sys/queue.h>
42 #include <sys/systm.h>
43 #include <sys/sysctl.h>
44 #include <sys/types.h>
46 #include <machine/stdarg.h>
49 #include <cam/cam_ccb.h>
50 #include <cam/cam_debug.h>
51 #include <cam/cam_periph.h>
52 #include <cam/cam_xpt_periph.h>
54 #include <cam/scsi/scsi_all.h>
55 #include <cam/scsi/scsi_message.h>
56 #include <cam/scsi/scsi_enc.h>
57 #include <cam/scsi/scsi_enc_internal.h>
61 MALLOC_DEFINE(M_SCSIENC, "SCSI ENC", "SCSI ENC buffers");
63 /* Enclosure type independent driver */
65 static d_open_t enc_open;
66 static d_close_t enc_close;
67 static d_ioctl_t enc_ioctl;
68 static periph_init_t enc_init;
69 static periph_ctor_t enc_ctor;
70 static periph_oninv_t enc_oninvalidate;
71 static periph_dtor_t enc_dtor;
73 static void enc_async(void *, uint32_t, struct cam_path *, void *);
74 static enctyp enc_type(struct ccb_getdev *);
76 SYSCTL_NODE(_kern_cam, OID_AUTO, enc, CTLFLAG_RD, 0,
77 "CAM Enclosure Services driver");
79 static struct periph_driver encdriver = {
81 TAILQ_HEAD_INITIALIZER(encdriver.units), /* generation */ 0
84 PERIPHDRIVER_DECLARE(enc, encdriver);
86 static struct cdevsw enc_cdevsw = {
87 .d_version = D_VERSION,
92 .d_flags = D_TRACKCLOSE,
101 * Install a global async callback. This callback will
102 * receive async callbacks like "new device found".
104 status = xpt_register_async(AC_FOUND_DEVICE, enc_async, NULL, NULL);
106 if (status != CAM_REQ_CMP) {
107 printf("enc: Failed to attach master async callback "
108 "due to status 0x%x!\n", status);
113 enc_devgonecb(void *arg)
115 struct cam_periph *periph;
116 struct enc_softc *enc;
120 periph = (struct cam_periph *)arg;
121 mtx = cam_periph_mtx(periph);
123 enc = (struct enc_softc *)periph->softc;
126 * When we get this callback, we will get no more close calls from
127 * devfs. So if we have any dangling opens, we need to release the
128 * reference held for that particular context.
130 for (i = 0; i < enc->open_count; i++)
131 cam_periph_release_locked(periph);
136 * Release the reference held for the device node, it is gone now.
138 cam_periph_release_locked(periph);
141 * We reference the lock directly here, instead of using
142 * cam_periph_unlock(). The reason is that the final call to
143 * cam_periph_release_locked() above could result in the periph
144 * getting freed. If that is the case, dereferencing the periph
145 * with a cam_periph_unlock() call would cause a page fault.
151 enc_oninvalidate(struct cam_periph *periph)
153 struct enc_softc *enc;
157 enc->enc_flags |= ENC_FLAG_INVALID;
159 /* If the sub-driver has an invalidate routine, call it */
160 if (enc->enc_vec.softc_invalidate != NULL)
161 enc->enc_vec.softc_invalidate(enc);
164 * Unregister any async callbacks.
166 xpt_register_async(0, enc_async, periph, periph->path);
169 * Shutdown our daemon.
171 enc->enc_flags |= ENC_FLAG_SHUTDOWN;
172 if (enc->enc_daemon != NULL) {
173 /* Signal the ses daemon to terminate. */
174 wakeup(enc->enc_daemon);
176 callout_drain(&enc->status_updater);
178 destroy_dev_sched_cb(enc->enc_dev, enc_devgonecb, periph);
182 enc_dtor(struct cam_periph *periph)
184 struct enc_softc *enc;
188 /* If the sub-driver has a cleanup routine, call it */
189 if (enc->enc_vec.softc_cleanup != NULL)
190 enc->enc_vec.softc_cleanup(enc);
192 if (enc->enc_boot_hold_ch.ich_func != NULL) {
193 config_intrhook_disestablish(&enc->enc_boot_hold_ch);
194 enc->enc_boot_hold_ch.ich_func = NULL;
201 enc_async(void *callback_arg, uint32_t code, struct cam_path *path, void *arg)
203 struct cam_periph *periph;
205 periph = (struct cam_periph *)callback_arg;
208 case AC_FOUND_DEVICE:
210 struct ccb_getdev *cgd;
214 cgd = (struct ccb_getdev *)arg;
219 if (enc_type(cgd) == ENC_NONE) {
221 * Schedule announcement of the ENC bindings for
222 * this device if it is managed by a SEP.
224 path_id = xpt_path_path_id(path);
226 TAILQ_FOREACH(periph, &encdriver.units, unit_links) {
227 struct enc_softc *softc;
229 softc = (struct enc_softc *)periph->softc;
230 if (xpt_path_path_id(periph->path) != path_id
232 || (softc->enc_flags & ENC_FLAG_INITIALIZED)
234 || softc->enc_vec.device_found == NULL)
237 softc->enc_vec.device_found(softc);
243 status = cam_periph_alloc(enc_ctor, enc_oninvalidate,
244 enc_dtor, NULL, "ses", CAM_PERIPH_BIO,
245 path, enc_async, AC_FOUND_DEVICE, cgd);
247 if (status != CAM_REQ_CMP && status != CAM_REQ_INPROG) {
248 printf("enc_async: Unable to probe new device due to "
249 "status 0x%x\n", status);
254 cam_periph_async(periph, code, path, arg);
260 enc_open(struct cdev *dev, int flags, int fmt, struct thread *td)
262 struct cam_periph *periph;
263 struct enc_softc *softc;
266 periph = (struct cam_periph *)dev->si_drv1;
267 if (periph == NULL) {
271 if (cam_periph_acquire(periph) != CAM_REQ_CMP)
274 cam_periph_lock(periph);
276 softc = (struct enc_softc *)periph->softc;
278 if ((softc->enc_flags & ENC_FLAG_INITIALIZED) == 0) {
282 if (softc->enc_flags & ENC_FLAG_INVALID) {
288 cam_periph_release_locked(periph);
292 cam_periph_unlock(periph);
298 enc_close(struct cdev *dev, int flag, int fmt, struct thread *td)
300 struct cam_periph *periph;
301 struct enc_softc *enc;
304 periph = (struct cam_periph *)dev->si_drv1;
307 mtx = cam_periph_mtx(periph);
313 cam_periph_release_locked(periph);
316 * We reference the lock directly here, instead of using
317 * cam_periph_unlock(). The reason is that the call to
318 * cam_periph_release_locked() above could result in the periph
319 * getting freed. If that is the case, dereferencing the periph
320 * with a cam_periph_unlock() call would cause a page fault.
322 * cam_periph_release() avoids this problem using the same method,
323 * but we're manually acquiring and dropping the lock here to
324 * protect the open count and avoid another lock acquisition and
333 enc_error(union ccb *ccb, uint32_t cflags, uint32_t sflags)
335 struct enc_softc *softc;
336 struct cam_periph *periph;
338 periph = xpt_path_periph(ccb->ccb_h.path);
339 softc = (struct enc_softc *)periph->softc;
341 return (cam_periph_error(ccb, cflags, sflags, &softc->saved_ccb));
345 enc_ioctl(struct cdev *dev, u_long cmd, caddr_t arg_addr, int flag,
348 struct cam_periph *periph;
349 encioc_enc_status_t tmp;
350 encioc_string_t sstr;
351 encioc_elm_status_t elms;
352 encioc_elm_desc_t elmd;
353 encioc_elm_devnames_t elmdn;
354 encioc_element_t *uelm;
362 addr = *((caddr_t *) arg_addr);
366 periph = (struct cam_periph *)dev->si_drv1;
370 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering encioctl\n"));
372 cam_periph_lock(periph);
373 enc = (struct enc_softc *)periph->softc;
374 cache = &enc->enc_cache;
377 * Now check to see whether we're initialized or not.
378 * This actually should never fail as we're not supposed
379 * to get past enc_open w/o successfully initializing
382 if ((enc->enc_flags & ENC_FLAG_INITIALIZED) == 0) {
383 cam_periph_unlock(periph);
386 cam_periph_unlock(periph);
390 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
391 ("trying to do ioctl %#lx\n", cmd));
394 * If this command can change the device's state,
395 * we must have the device open for writing.
397 * For commands that get information about the
398 * device- we don't need to lock the peripheral
399 * if we aren't running a command. The periph
400 * also can't go away while a user process has
405 case ENCIOC_GETELMMAP:
406 case ENCIOC_GETENCSTAT:
407 case ENCIOC_GETELMSTAT:
408 case ENCIOC_GETELMDESC:
409 case ENCIOC_GETELMDEVNAMES:
412 if ((flag & FWRITE) == 0) {
418 * XXX The values read here are only valid for the current
419 * configuration generation. We need these ioctls
420 * to also pass in/out a generation number.
422 sx_slock(&enc->enc_cache_lock);
425 error = copyout(&cache->nelms, addr, sizeof (cache->nelms));
428 case ENCIOC_GETELMMAP:
429 for (uelm = addr, i = 0; i != cache->nelms; i++) {
430 encioc_element_t kelm;
432 kelm.elm_subenc_id = cache->elm_map[i].subenclosure;
433 kelm.elm_type = cache->elm_map[i].enctype;
434 error = copyout(&kelm, &uelm[i], sizeof(kelm));
440 case ENCIOC_GETENCSTAT:
441 cam_periph_lock(periph);
442 error = enc->enc_vec.get_enc_status(enc, 1);
444 cam_periph_unlock(periph);
447 tmp = cache->enc_status;
448 cam_periph_unlock(periph);
449 error = copyout(&tmp, addr, sizeof(tmp));
450 cache->enc_status = tmp;
453 case ENCIOC_SETENCSTAT:
454 error = copyin(addr, &tmp, sizeof(tmp));
457 cam_periph_lock(periph);
458 error = enc->enc_vec.set_enc_status(enc, tmp, 1);
459 cam_periph_unlock(periph);
462 case ENCIOC_GETSTRING:
463 case ENCIOC_SETSTRING:
464 if (enc->enc_vec.handle_string == NULL) {
468 error = copyin(addr, &sstr, sizeof(sstr));
471 cam_periph_lock(periph);
472 error = enc->enc_vec.handle_string(enc, &sstr, cmd);
473 cam_periph_unlock(periph);
476 case ENCIOC_GETELMSTAT:
477 error = copyin(addr, &elms, sizeof(elms));
480 if (elms.elm_idx >= cache->nelms) {
484 cam_periph_lock(periph);
485 error = enc->enc_vec.get_elm_status(enc, &elms, 1);
486 cam_periph_unlock(periph);
489 error = copyout(&elms, addr, sizeof(elms));
492 case ENCIOC_GETELMDESC:
493 error = copyin(addr, &elmd, sizeof(elmd));
496 if (elmd.elm_idx >= cache->nelms) {
500 if (enc->enc_vec.get_elm_desc != NULL) {
501 error = enc->enc_vec.get_elm_desc(enc, &elmd);
505 elmd.elm_desc_len = 0;
506 error = copyout(&elmd, addr, sizeof(elmd));
509 case ENCIOC_GETELMDEVNAMES:
510 if (enc->enc_vec.get_elm_devnames == NULL) {
514 error = copyin(addr, &elmdn, sizeof(elmdn));
517 if (elmdn.elm_idx >= cache->nelms) {
521 cam_periph_lock(periph);
522 error = (*enc->enc_vec.get_elm_devnames)(enc, &elmdn);
523 cam_periph_unlock(periph);
526 error = copyout(&elmdn, addr, sizeof(elmdn));
529 case ENCIOC_SETELMSTAT:
530 error = copyin(addr, &elms, sizeof(elms));
534 if (elms.elm_idx >= cache->nelms) {
538 cam_periph_lock(periph);
539 error = enc->enc_vec.set_elm_status(enc, &elms, 1);
540 cam_periph_unlock(periph);
546 cam_periph_lock(periph);
547 error = enc->enc_vec.init_enc(enc);
548 cam_periph_unlock(periph);
552 cam_periph_lock(periph);
553 error = cam_periph_ioctl(periph, cmd, arg_addr, enc_error);
554 cam_periph_unlock(periph);
557 sx_sunlock(&enc->enc_cache_lock);
562 enc_runcmd(struct enc_softc *enc, char *cdb, int cdbl, char *dptr, int *dlenp)
564 int error, dlen, tdlen;
568 CAM_DEBUG(enc->periph->path, CAM_DEBUG_TRACE,
569 ("entering enc_runcmd\n"));
571 if ((dlen = *dlenp) < 0) {
582 if (cdbl > IOCDBLEN) {
586 ccb = cam_periph_getccb(enc->periph, CAM_PRIORITY_NORMAL);
587 if (enc->enc_type == ENC_SEMB_SES || enc->enc_type == ENC_SEMB_SAFT) {
588 tdlen = min(dlen, 1020);
589 tdlen = (tdlen + 3) & ~3;
590 cam_fill_ataio(&ccb->ataio, 0, NULL, ddf, 0, dptr, tdlen,
592 if (cdb[0] == RECEIVE_DIAGNOSTIC)
593 ata_28bit_cmd(&ccb->ataio,
594 ATA_SEP_ATTN, cdb[2], 0x02, tdlen / 4);
595 else if (cdb[0] == SEND_DIAGNOSTIC)
596 ata_28bit_cmd(&ccb->ataio,
597 ATA_SEP_ATTN, dlen > 0 ? dptr[0] : 0,
599 else if (cdb[0] == READ_BUFFER)
600 ata_28bit_cmd(&ccb->ataio,
601 ATA_SEP_ATTN, cdb[2], 0x00, tdlen / 4);
603 ata_28bit_cmd(&ccb->ataio,
604 ATA_SEP_ATTN, dlen > 0 ? dptr[0] : 0,
608 cam_fill_csio(&ccb->csio, 0, NULL, ddf, MSG_SIMPLE_Q_TAG,
609 dptr, dlen, sizeof (struct scsi_sense_data), cdbl,
611 bcopy(cdb, ccb->csio.cdb_io.cdb_bytes, cdbl);
614 error = cam_periph_runccb(ccb, enc_error, ENC_CFLAGS, ENC_FLAGS, NULL);
621 if (ccb->ccb_h.func_code == XPT_ATA_IO)
622 *dlenp = ccb->ataio.resid;
624 *dlenp = ccb->csio.resid;
625 *dlenp += tdlen - dlen;
628 xpt_release_ccb(ccb);
629 CAM_DEBUG(enc->periph->path, CAM_DEBUG_SUBTRACE,
630 ("exiting enc_runcmd: *dlenp = %d\n", *dlenp));
635 enc_log(struct enc_softc *enc, const char *fmt, ...)
639 printf("%s%d: ", enc->periph->periph_name, enc->periph->unit_number);
646 * The code after this point runs on many platforms,
647 * so forgive the slightly awkward and nonconforming
652 * Is this a device that supports enclosure services?
654 * It's a pretty simple ruleset- if it is device type
655 * 0x0D (13), it's an ENCLOSURE device.
658 #define SAFTE_START 44
660 #define SAFTE_LEN SAFTE_END-SAFTE_START
663 enc_type(struct ccb_getdev *cgd)
668 if (cgd->protocol == PROTO_SEMB) {
669 iqd = (unsigned char *)&cgd->ident_data;
670 if (STRNCMP(iqd + 43, "S-E-S", 5) == 0)
671 return (ENC_SEMB_SES);
672 else if (STRNCMP(iqd + 43, "SAF-TE", 6) == 0)
673 return (ENC_SEMB_SAFT);
676 } else if (cgd->protocol != PROTO_SCSI)
679 iqd = (unsigned char *)&cgd->inq_data;
680 buflen = min(sizeof(cgd->inq_data),
681 SID_ADDITIONAL_LENGTH(&cgd->inq_data));
683 if ((iqd[0] & 0x1f) == T_ENCLOSURE) {
684 if ((iqd[2] & 0x7) > 2) {
687 return (ENC_SES_SCSI2);
692 #ifdef SES_ENABLE_PASSTHROUGH
693 if ((iqd[6] & 0x40) && (iqd[2] & 0x7) >= 2) {
695 * PassThrough Device.
697 return (ENC_SES_PASSTHROUGH);
702 * The comparison is short for a reason-
703 * some vendors were chopping it short.
706 if (buflen < SAFTE_END - 2) {
710 if (STRNCMP((char *)&iqd[SAFTE_START], "SAF-TE", SAFTE_LEN - 2) == 0) {
716 /*================== Enclosure Monitoring/Processing Daemon ==================*/
718 * \brief Queue an update request for a given action, if needed.
720 * \param enc SES softc to queue the request for.
721 * \param action Action requested.
724 enc_update_request(enc_softc_t *enc, uint32_t action)
726 if ((enc->pending_actions & (0x1 << action)) == 0) {
727 enc->pending_actions |= (0x1 << action);
728 ENC_DLOG(enc, "%s: queing requested action %d\n",
730 if (enc->current_action == ENC_UPDATE_NONE)
731 wakeup(enc->enc_daemon);
733 ENC_DLOG(enc, "%s: ignoring requested action %d - "
734 "Already queued\n", __func__, action);
739 * \brief Invoke the handler of the highest priority pending
740 * state in the SES state machine.
742 * \param enc The SES instance invoking the state machine.
745 enc_fsm_step(enc_softc_t *enc)
749 struct enc_fsm_state *cur_state;
753 ENC_DLOG(enc, "%s enter %p\n", __func__, enc);
755 enc->current_action = ffs(enc->pending_actions) - 1;
756 enc->pending_actions &= ~(0x1 << enc->current_action);
758 cur_state = &enc->enc_fsm_states[enc->current_action];
761 if (cur_state->buf_size != 0) {
762 cam_periph_unlock(enc->periph);
763 buf = malloc(cur_state->buf_size, M_SCSIENC, M_WAITOK|M_ZERO);
764 cam_periph_lock(enc->periph);
769 if (cur_state->fill != NULL) {
770 ccb = cam_periph_getccb(enc->periph, CAM_PRIORITY_NORMAL);
772 error = cur_state->fill(enc, cur_state, ccb, buf);
776 error = cam_periph_runccb(ccb, cur_state->error,
778 ENC_FLAGS|SF_QUIET_IR, NULL);
782 if (ccb->ccb_h.func_code == XPT_ATA_IO)
783 xfer_len = ccb->ataio.dxfer_len - ccb->ataio.resid;
785 xfer_len = ccb->csio.dxfer_len - ccb->csio.resid;
789 cam_periph_unlock(enc->periph);
790 cur_state->done(enc, cur_state, ccb, &buf, error, xfer_len);
791 cam_periph_lock(enc->periph);
794 ENC_DLOG(enc, "%s exit - result %d\n", __func__, error);
795 ENC_FREE_AND_NULL(buf);
797 xpt_release_ccb(ccb);
801 * \invariant Called with cam_periph mutex held.
804 enc_status_updater(void *arg)
809 if (enc->enc_vec.poll_status != NULL)
810 enc->enc_vec.poll_status(enc);
814 enc_daemon(void *arg)
820 cam_periph_lock(enc->periph);
821 while ((enc->enc_flags & ENC_FLAG_SHUTDOWN) == 0) {
822 if (enc->pending_actions == 0) {
823 struct intr_config_hook *hook;
826 * Reset callout and msleep, or
827 * issue timed task completion
830 enc->current_action = ENC_UPDATE_NONE;
833 * We've been through our state machine at least
834 * once. Allow the transition to userland.
836 hook = &enc->enc_boot_hold_ch;
837 if (hook->ich_func != NULL) {
838 config_intrhook_disestablish(hook);
839 hook->ich_func = NULL;
842 callout_reset(&enc->status_updater, 60*hz,
843 enc_status_updater, enc);
845 cam_periph_sleep(enc->periph, enc->enc_daemon,
851 enc->enc_daemon = NULL;
852 cam_periph_unlock(enc->periph);
853 cam_periph_release(enc->periph);
858 enc_kproc_init(enc_softc_t *enc)
862 callout_init_mtx(&enc->status_updater, cam_periph_mtx(enc->periph), 0);
864 if (cam_periph_acquire(enc->periph) != CAM_REQ_CMP)
867 result = kproc_create(enc_daemon, enc, &enc->enc_daemon, /*flags*/0,
868 /*stackpgs*/0, "enc_daemon%d",
869 enc->periph->unit_number);
871 /* Do an initial load of all page data. */
872 cam_periph_lock(enc->periph);
873 enc->enc_vec.poll_status(enc);
874 cam_periph_unlock(enc->periph);
876 cam_periph_release(enc->periph);
881 * \brief Interrupt configuration hook callback associated with
884 * Since interrupts are always functional at the time of enclosure
885 * configuration, there is nothing to be done when the callback occurs.
886 * This hook is only registered to hold up boot processing while initial
887 * eclosure processing occurs.
889 * \param arg The enclosure softc, but currently unused in this callback.
892 enc_nop_confighook_cb(void *arg __unused)
897 enc_ctor(struct cam_periph *periph, void *arg)
899 cam_status status = CAM_REQ_CMP_ERR;
902 struct ccb_getdev *cgd;
905 cgd = (struct ccb_getdev *)arg;
907 printf("enc_ctor: no getdev CCB, can't register device\n");
911 enc = ENC_MALLOCZ(sizeof(*enc));
913 printf("enc_ctor: Unable to probe new device. "
914 "Unable to allocate enc\n");
917 enc->periph = periph;
918 enc->current_action = ENC_UPDATE_INVALID;
920 enc->enc_type = enc_type(cgd);
921 sx_init(&enc->enc_cache_lock, "enccache");
923 switch (enc->enc_type) {
926 case ENC_SES_PASSTHROUGH:
928 err = ses_softc_init(enc);
932 err = safte_softc_init(enc);
937 return (CAM_REQ_CMP_ERR);
941 xpt_print(periph->path, "error %d initializing\n", err);
946 * Hold off userland until we have made at least one pass
947 * through our state machine so that physical path data is
950 if (enc->enc_vec.poll_status != NULL) {
951 enc->enc_boot_hold_ch.ich_func = enc_nop_confighook_cb;
952 enc->enc_boot_hold_ch.ich_arg = enc;
953 config_intrhook_establish(&enc->enc_boot_hold_ch);
957 * The softc field is set only once the enc is fully initialized
958 * so that we can rely on this field to detect partially
959 * initialized periph objects in the AC_FOUND_DEVICE handler.
963 cam_periph_unlock(periph);
964 if (enc->enc_vec.poll_status != NULL) {
965 err = enc_kproc_init(enc);
967 xpt_print(periph->path,
968 "error %d starting enc_daemon\n", err);
974 * Acquire a reference to the periph before we create the devfs
975 * instance for it. We'll release this reference once the devfs
976 * instance has been freed.
978 if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
979 xpt_print(periph->path, "%s: lost periph during "
980 "registration!\n", __func__);
981 cam_periph_lock(periph);
983 return (CAM_REQ_CMP_ERR);
986 enc->enc_dev = make_dev(&enc_cdevsw, periph->unit_number,
987 UID_ROOT, GID_OPERATOR, 0600, "%s%d",
988 periph->periph_name, periph->unit_number);
990 cam_periph_lock(periph);
991 enc->enc_dev->si_drv1 = periph;
993 enc->enc_flags |= ENC_FLAG_INITIALIZED;
996 * Add an async callback so that we get notified if this
999 xpt_register_async(AC_LOST_DEVICE, enc_async, periph, periph->path);
1001 switch (enc->enc_type) {
1004 tname = "No ENC device";
1007 tname = "SCSI-2 ENC Device";
1010 tname = "SCSI-3 ENC Device";
1012 case ENC_SES_PASSTHROUGH:
1013 tname = "ENC Passthrough Device";
1016 tname = "SAF-TE Compliant Device";
1019 tname = "SEMB SES Device";
1022 tname = "SEMB SAF-TE Device";
1025 xpt_announce_periph(periph, tname);
1026 status = CAM_REQ_CMP;
1029 if (status != CAM_REQ_CMP)