2 * Implementation of the Common Access Method Transport (XPT) layer.
4 * SPDX-License-Identifier: BSD-2-Clause
6 * Copyright (c) 1997, 1998, 1999 Justin T. Gibbs.
7 * Copyright (c) 1997, 1998, 1999 Kenneth D. Merry.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions, and the following disclaimer,
15 * without modification, immediately at the beginning of the file.
16 * 2. The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 #include "opt_printf.h"
34 #include <sys/param.h>
37 #include <sys/systm.h>
38 #include <sys/types.h>
39 #include <sys/malloc.h>
40 #include <sys/kernel.h>
43 #include <sys/fcntl.h>
47 #include <sys/taskqueue.h>
50 #include <sys/mutex.h>
51 #include <sys/sysctl.h>
52 #include <sys/kthread.h>
55 #include <cam/cam_ccb.h>
56 #include <cam/cam_iosched.h>
57 #include <cam/cam_periph.h>
58 #include <cam/cam_queue.h>
59 #include <cam/cam_sim.h>
60 #include <cam/cam_xpt.h>
61 #include <cam/cam_xpt_sim.h>
62 #include <cam/cam_xpt_periph.h>
63 #include <cam/cam_xpt_internal.h>
64 #include <cam/cam_debug.h>
65 #include <cam/cam_compat.h>
67 #include <cam/scsi/scsi_all.h>
68 #include <cam/scsi/scsi_message.h>
69 #include <cam/scsi/scsi_pass.h>
71 #include <machine/stdarg.h> /* for xpt_print below */
73 /* Wild guess based on not wanting to grow the stack too much */
74 #define XPT_PRINT_MAXLEN 512
75 #ifdef PRINTF_BUFR_SIZE
76 #define XPT_PRINT_LEN PRINTF_BUFR_SIZE
78 #define XPT_PRINT_LEN 128
80 _Static_assert(XPT_PRINT_LEN <= XPT_PRINT_MAXLEN, "XPT_PRINT_LEN is too large");
83 * This is the maximum number of high powered commands (e.g. start unit)
84 * that can be outstanding at a particular time.
86 #ifndef CAM_MAX_HIGHPOWER
87 #define CAM_MAX_HIGHPOWER 4
90 /* Datastructures internal to the xpt layer */
91 MALLOC_DEFINE(M_CAMXPT, "CAM XPT", "CAM XPT buffers");
92 MALLOC_DEFINE(M_CAMDEV, "CAM DEV", "CAM devices");
93 MALLOC_DEFINE(M_CAMCCB, "CAM CCB", "CAM CCBs");
94 MALLOC_DEFINE(M_CAMPATH, "CAM path", "CAM paths");
97 uint32_t xpt_generation;
99 /* number of high powered commands that can go through right now */
100 struct mtx xpt_highpower_lock;
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;
112 * N.B., "busses" is an archaic spelling of "buses". In new code
113 * "buses" is preferred.
115 TAILQ_HEAD(,cam_eb) xpt_busses;
116 u_int bus_generation;
119 struct callout boot_callout;
120 struct task boot_task;
121 struct root_hold_token xpt_rootmount;
123 struct mtx xpt_topo_lock;
124 struct taskqueue *xpt_taskq;
129 DM_RET_FLAG_MASK = 0x0f,
132 DM_RET_DESCEND = 0x20,
134 DM_RET_ACTION_MASK = 0xf0
142 } xpt_traverse_depth;
144 struct xpt_traverse_config {
145 xpt_traverse_depth depth;
150 typedef int xpt_busfunc_t (struct cam_eb *bus, void *arg);
151 typedef int xpt_targetfunc_t (struct cam_et *target, void *arg);
152 typedef int xpt_devicefunc_t (struct cam_ed *device, void *arg);
153 typedef int xpt_periphfunc_t (struct cam_periph *periph, void *arg);
154 typedef int xpt_pdrvfunc_t (struct periph_driver **pdrv, void *arg);
156 /* Transport layer configuration information */
157 static struct xpt_softc xsoftc;
159 MTX_SYSINIT(xpt_topo_init, &xsoftc.xpt_topo_lock, "XPT topology lock", MTX_DEF);
161 SYSCTL_INT(_kern_cam, OID_AUTO, boot_delay, CTLFLAG_RDTUN,
162 &xsoftc.boot_delay, 0, "Bus registration wait time");
163 SYSCTL_UINT(_kern_cam, OID_AUTO, xpt_generation, CTLFLAG_RD,
164 &xsoftc.xpt_generation, 0, "CAM peripheral generation count");
167 struct mtx_padalign cam_doneq_mtx;
168 STAILQ_HEAD(, ccb_hdr) cam_doneq;
172 static struct cam_doneq cam_doneqs[MAXCPU];
173 static u_int __read_mostly cam_num_doneqs;
174 static struct proc *cam_proc;
175 static struct cam_doneq cam_async;
177 SYSCTL_INT(_kern_cam, OID_AUTO, num_doneqs, CTLFLAG_RDTUN,
178 &cam_num_doneqs, 0, "Number of completion queues/threads");
180 struct cam_periph *xpt_periph;
182 static periph_init_t xpt_periph_init;
184 static struct periph_driver xpt_driver =
186 xpt_periph_init, "xpt",
187 TAILQ_HEAD_INITIALIZER(xpt_driver.units), /* generation */ 0,
191 PERIPHDRIVER_DECLARE(xpt, xpt_driver);
193 static d_open_t xptopen;
194 static d_close_t xptclose;
195 static d_ioctl_t xptioctl;
196 static d_ioctl_t xptdoioctl;
198 static struct cdevsw xpt_cdevsw = {
199 .d_version = D_VERSION,
207 /* Storage for debugging datastructures */
208 struct cam_path *cam_dpath;
209 uint32_t __read_mostly cam_dflags = CAM_DEBUG_FLAGS;
210 SYSCTL_UINT(_kern_cam, OID_AUTO, dflags, CTLFLAG_RWTUN,
211 &cam_dflags, 0, "Enabled debug flags");
212 uint32_t cam_debug_delay = CAM_DEBUG_DELAY;
213 SYSCTL_UINT(_kern_cam, OID_AUTO, debug_delay, CTLFLAG_RWTUN,
214 &cam_debug_delay, 0, "Delay in us after each debug message");
216 /* Our boot-time initialization hook */
217 static int cam_module_event_handler(module_t, int /*modeventtype_t*/, void *);
219 static moduledata_t cam_moduledata = {
221 cam_module_event_handler,
225 static int xpt_init(void *);
227 DECLARE_MODULE(cam, cam_moduledata, SI_SUB_CONFIGURE, SI_ORDER_SECOND);
228 MODULE_VERSION(cam, 1);
230 static void xpt_async_bcast(struct async_list *async_head,
232 struct cam_path *path,
234 static path_id_t xptnextfreepathid(void);
235 static path_id_t xptpathid(const char *sim_name, int sim_unit, int sim_bus);
236 static union ccb *xpt_get_ccb(struct cam_periph *periph);
237 static union ccb *xpt_get_ccb_nowait(struct cam_periph *periph);
238 static void xpt_run_allocq(struct cam_periph *periph, int sleep);
239 static void xpt_run_allocq_task(void *context, int pending);
240 static void xpt_run_devq(struct cam_devq *devq);
241 static callout_func_t xpt_release_devq_timeout;
242 static void xpt_acquire_bus(struct cam_eb *bus);
243 static void xpt_release_bus(struct cam_eb *bus);
244 static uint32_t xpt_freeze_devq_device(struct cam_ed *dev, u_int count);
245 static int xpt_release_devq_device(struct cam_ed *dev, u_int count,
247 static struct cam_et*
248 xpt_alloc_target(struct cam_eb *bus, target_id_t target_id);
249 static void xpt_acquire_target(struct cam_et *target);
250 static void xpt_release_target(struct cam_et *target);
251 static struct cam_eb*
252 xpt_find_bus(path_id_t path_id);
253 static struct cam_et*
254 xpt_find_target(struct cam_eb *bus, target_id_t target_id);
255 static struct cam_ed*
256 xpt_find_device(struct cam_et *target, lun_id_t lun_id);
257 static void xpt_config(void *arg);
258 static void xpt_hold_boot_locked(void);
259 static int xpt_schedule_dev(struct camq *queue, cam_pinfo *dev_pinfo,
260 uint32_t new_priority);
261 static xpt_devicefunc_t xptpassannouncefunc;
262 static void xptaction(struct cam_sim *sim, union ccb *work_ccb);
263 static void xptpoll(struct cam_sim *sim);
264 static void camisr_runqueue(void);
265 static void xpt_done_process(struct ccb_hdr *ccb_h);
266 static void xpt_done_td(void *);
267 static void xpt_async_td(void *);
268 static dev_match_ret xptbusmatch(struct dev_match_pattern *patterns,
269 u_int num_patterns, struct cam_eb *bus);
270 static dev_match_ret xptdevicematch(struct dev_match_pattern *patterns,
272 struct cam_ed *device);
273 static dev_match_ret xptperiphmatch(struct dev_match_pattern *patterns,
275 struct cam_periph *periph);
276 static xpt_busfunc_t xptedtbusfunc;
277 static xpt_targetfunc_t xptedttargetfunc;
278 static xpt_devicefunc_t xptedtdevicefunc;
279 static xpt_periphfunc_t xptedtperiphfunc;
280 static xpt_pdrvfunc_t xptplistpdrvfunc;
281 static xpt_periphfunc_t xptplistperiphfunc;
282 static int xptedtmatch(struct ccb_dev_match *cdm);
283 static int xptperiphlistmatch(struct ccb_dev_match *cdm);
284 static int xptbustraverse(struct cam_eb *start_bus,
285 xpt_busfunc_t *tr_func, void *arg);
286 static int xpttargettraverse(struct cam_eb *bus,
287 struct cam_et *start_target,
288 xpt_targetfunc_t *tr_func, void *arg);
289 static int xptdevicetraverse(struct cam_et *target,
290 struct cam_ed *start_device,
291 xpt_devicefunc_t *tr_func, void *arg);
292 static int xptperiphtraverse(struct cam_ed *device,
293 struct cam_periph *start_periph,
294 xpt_periphfunc_t *tr_func, void *arg);
295 static int xptpdrvtraverse(struct periph_driver **start_pdrv,
296 xpt_pdrvfunc_t *tr_func, void *arg);
297 static int xptpdperiphtraverse(struct periph_driver **pdrv,
298 struct cam_periph *start_periph,
299 xpt_periphfunc_t *tr_func,
301 static xpt_busfunc_t xptdefbusfunc;
302 static xpt_targetfunc_t xptdeftargetfunc;
303 static xpt_devicefunc_t xptdefdevicefunc;
304 static xpt_periphfunc_t xptdefperiphfunc;
305 static void xpt_finishconfig_task(void *context, int pending);
306 static void xpt_dev_async_default(uint32_t async_code,
308 struct cam_et *target,
309 struct cam_ed *device,
311 static struct cam_ed * xpt_alloc_device_default(struct cam_eb *bus,
312 struct cam_et *target,
314 static xpt_devicefunc_t xptsetasyncfunc;
315 static xpt_busfunc_t xptsetasyncbusfunc;
316 static cam_status xptregister(struct cam_periph *periph,
320 xpt_schedule_devq(struct cam_devq *devq, struct cam_ed *dev)
324 mtx_assert(&devq->send_mtx, MA_OWNED);
325 if ((dev->ccbq.queue.entries > 0) &&
326 (dev->ccbq.dev_openings > 0) &&
327 (dev->ccbq.queue.qfrozen_cnt == 0)) {
329 * The priority of a device waiting for controller
330 * resources is that of the highest priority CCB
334 xpt_schedule_dev(&devq->send_queue,
336 CAMQ_GET_PRIO(&dev->ccbq.queue));
344 device_is_queued(struct cam_ed *device)
346 return (device->devq_entry.index != CAM_UNQUEUED_INDEX);
350 xpt_periph_init(void)
352 make_dev(&xpt_cdevsw, 0, UID_ROOT, GID_OPERATOR, 0600, "xpt0");
356 xptopen(struct cdev *dev, int flags, int fmt, struct thread *td)
360 * Only allow read-write access.
362 if (((flags & FWRITE) == 0) || ((flags & FREAD) == 0))
366 * We don't allow nonblocking access.
368 if ((flags & O_NONBLOCK) != 0) {
369 printf("%s: can't do nonblocking access\n", devtoname(dev));
377 xptclose(struct cdev *dev, int flag, int fmt, struct thread *td)
384 * Don't automatically grab the xpt softc lock here even though this is going
385 * through the xpt device. The xpt device is really just a back door for
386 * accessing other devices and SIMs, so the right thing to do is to grab
387 * the appropriate SIM lock once the bus/SIM is located.
390 xptioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td)
394 if ((error = xptdoioctl(dev, cmd, addr, flag, td)) == ENOTTY) {
395 error = cam_compat_ioctl(dev, cmd, addr, flag, td, xptdoioctl);
401 xptdoioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td)
409 * For the transport layer CAMIOCOMMAND ioctl, we really only want
410 * to accept CCB types that don't quite make sense to send through a
411 * passthrough driver. XPT_PATH_INQ is an exception to this, as stated
419 inccb = (union ccb *)addr;
420 #if defined(BUF_TRACKING) || defined(FULL_BUF_TRACKING)
421 if (inccb->ccb_h.func_code == XPT_SCSI_IO)
422 inccb->csio.bio = NULL;
425 if (inccb->ccb_h.flags & CAM_UNLOCKED)
428 bus = xpt_find_bus(inccb->ccb_h.path_id);
432 switch (inccb->ccb_h.func_code) {
435 if (inccb->ccb_h.target_id != CAM_TARGET_WILDCARD ||
436 inccb->ccb_h.target_lun != CAM_LUN_WILDCARD) {
437 xpt_release_bus(bus);
442 if (inccb->ccb_h.target_id == CAM_TARGET_WILDCARD ||
443 inccb->ccb_h.target_lun != CAM_LUN_WILDCARD) {
444 xpt_release_bus(bus);
452 switch(inccb->ccb_h.func_code) {
460 ccb = xpt_alloc_ccb();
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) !=
475 /* Ensure all of our fields are correct */
476 xpt_setup_ccb(&ccb->ccb_h, ccb->ccb_h.path,
477 inccb->ccb_h.pinfo.priority);
478 xpt_merge_ccb(ccb, inccb);
479 xpt_path_lock(ccb->ccb_h.path);
480 cam_periph_runccb(ccb, NULL, 0, 0, NULL);
481 xpt_path_unlock(ccb->ccb_h.path);
482 bcopy(ccb, inccb, sizeof(union ccb));
483 xpt_free_path(ccb->ccb_h.path);
491 * This is an immediate CCB, so it's okay to
492 * allocate it on the stack.
494 memset(&ccb, 0, sizeof(ccb));
497 * Create a path using the bus, target, and lun the
500 if (xpt_create_path(&ccb.ccb_h.path, NULL,
501 inccb->ccb_h.path_id,
502 inccb->ccb_h.target_id,
503 inccb->ccb_h.target_lun) !=
508 /* Ensure all of our fields are correct */
509 xpt_setup_ccb(&ccb.ccb_h, ccb.ccb_h.path,
510 inccb->ccb_h.pinfo.priority);
511 xpt_merge_ccb(&ccb, inccb);
513 bcopy(&ccb, inccb, sizeof(union ccb));
514 xpt_free_path(ccb.ccb_h.path);
517 case XPT_DEV_MATCH: {
518 struct cam_periph_map_info mapinfo;
519 struct cam_path *old_path;
522 * We can't deal with physical addresses for this
523 * type of transaction.
525 if ((inccb->ccb_h.flags & CAM_DATA_MASK) !=
532 * Save this in case the caller had it set to
533 * something in particular.
535 old_path = inccb->ccb_h.path;
538 * We really don't need a path for the matching
539 * code. The path is needed because of the
540 * debugging statements in xpt_action(). They
541 * assume that the CCB has a valid path.
543 inccb->ccb_h.path = xpt_periph->path;
545 bzero(&mapinfo, sizeof(mapinfo));
548 * Map the pattern and match buffers into kernel
549 * virtual address space.
551 error = cam_periph_mapmem(inccb, &mapinfo, maxphys);
554 inccb->ccb_h.path = old_path;
559 * This is an immediate CCB, we can send it on directly.
564 * Map the buffers back into user space.
566 cam_periph_unmapmem(inccb, &mapinfo);
568 inccb->ccb_h.path = old_path;
577 xpt_release_bus(bus);
581 * This is the getpassthru ioctl. It takes a XPT_GDEVLIST ccb as input,
582 * with the periphal driver name and unit name filled in. The other
583 * fields don't really matter as input. The passthrough driver name
584 * ("pass"), and unit number are passed back in the ccb. The current
585 * device generation number, and the index into the device peripheral
586 * driver list, and the status are also passed back. Note that
587 * since we do everything in one pass, unlike the XPT_GDEVLIST ccb,
588 * we never return a status of CAM_GDEVLIST_LIST_CHANGED. It is
589 * (or rather should be) impossible for the device peripheral driver
590 * list to change since we look at the whole thing in one pass, and
591 * we do it with lock protection.
594 case CAMGETPASSTHRU: {
596 struct cam_periph *periph;
597 struct periph_driver **p_drv;
600 bool base_periph_found;
602 ccb = (union ccb *)addr;
603 unit = ccb->cgdl.unit_number;
604 name = ccb->cgdl.periph_name;
605 base_periph_found = false;
606 #if defined(BUF_TRACKING) || defined(FULL_BUF_TRACKING)
607 if (ccb->ccb_h.func_code == XPT_SCSI_IO)
608 ccb->csio.bio = NULL;
612 * Sanity check -- make sure we don't get a null peripheral
615 if (*ccb->cgdl.periph_name == '\0') {
620 /* Keep the list from changing while we traverse it */
623 /* first find our driver in the list of drivers */
624 for (p_drv = periph_drivers; *p_drv != NULL; p_drv++)
625 if (strcmp((*p_drv)->driver_name, name) == 0)
628 if (*p_drv == NULL) {
630 ccb->ccb_h.status = CAM_REQ_CMP_ERR;
631 ccb->cgdl.status = CAM_GDEVLIST_ERROR;
632 *ccb->cgdl.periph_name = '\0';
633 ccb->cgdl.unit_number = 0;
639 * Run through every peripheral instance of this driver
640 * and check to see whether it matches the unit passed
641 * in by the user. If it does, get out of the loops and
642 * find the passthrough driver associated with that
645 for (periph = TAILQ_FIRST(&(*p_drv)->units); periph != NULL;
646 periph = TAILQ_NEXT(periph, unit_links)) {
647 if (periph->unit_number == unit)
651 * If we found the peripheral driver that the user passed
652 * in, go through all of the peripheral drivers for that
653 * particular device and look for a passthrough driver.
655 if (periph != NULL) {
656 struct cam_ed *device;
659 base_periph_found = true;
660 device = periph->path->device;
661 for (i = 0, periph = SLIST_FIRST(&device->periphs);
663 periph = SLIST_NEXT(periph, periph_links), i++) {
665 * Check to see whether we have a
666 * passthrough device or not.
668 if (strcmp(periph->periph_name, "pass") == 0) {
670 * Fill in the getdevlist fields.
672 strlcpy(ccb->cgdl.periph_name,
674 sizeof(ccb->cgdl.periph_name));
675 ccb->cgdl.unit_number =
677 if (SLIST_NEXT(periph, periph_links))
679 CAM_GDEVLIST_MORE_DEVS;
682 CAM_GDEVLIST_LAST_DEVICE;
683 ccb->cgdl.generation =
687 * Fill in some CCB header fields
688 * that the user may want.
691 periph->path->bus->path_id;
692 ccb->ccb_h.target_id =
693 periph->path->target->target_id;
694 ccb->ccb_h.target_lun =
695 periph->path->device->lun_id;
696 ccb->ccb_h.status = CAM_REQ_CMP;
703 * If the periph is null here, one of two things has
704 * happened. The first possibility is that we couldn't
705 * find the unit number of the particular peripheral driver
706 * that the user is asking about. e.g. the user asks for
707 * the passthrough driver for "da11". We find the list of
708 * "da" peripherals all right, but there is no unit 11.
709 * The other possibility is that we went through the list
710 * of peripheral drivers attached to the device structure,
711 * but didn't find one with the name "pass". Either way,
712 * we return ENOENT, since we couldn't find something.
714 if (periph == NULL) {
715 ccb->ccb_h.status = CAM_REQ_CMP_ERR;
716 ccb->cgdl.status = CAM_GDEVLIST_ERROR;
717 *ccb->cgdl.periph_name = '\0';
718 ccb->cgdl.unit_number = 0;
721 * It is unfortunate that this is even necessary,
722 * but there are many, many clueless users out there.
723 * If this is true, the user is looking for the
724 * passthrough driver, but doesn't have one in his
727 if (base_periph_found) {
728 printf("xptioctl: pass driver is not in the "
730 printf("xptioctl: put \"device pass\" in "
731 "your kernel config file\n");
746 cam_module_event_handler(module_t mod, int what, void *arg)
752 if ((error = xpt_init(NULL)) != 0)
764 static struct xpt_proto *
765 xpt_proto_find(cam_proto proto)
767 struct xpt_proto **pp;
769 SET_FOREACH(pp, cam_xpt_proto_set) {
770 if ((*pp)->proto == proto)
778 xpt_rescan_done(struct cam_periph *periph, union ccb *done_ccb)
781 if (done_ccb->ccb_h.ppriv_ptr1 == NULL) {
782 xpt_free_path(done_ccb->ccb_h.path);
783 xpt_free_ccb(done_ccb);
785 done_ccb->ccb_h.cbfcnp = done_ccb->ccb_h.ppriv_ptr1;
786 (*done_ccb->ccb_h.cbfcnp)(periph, done_ccb);
791 /* thread to handle bus rescans */
793 xpt_scanner_thread(void *dummy)
797 struct cam_ed *device;
801 if (TAILQ_EMPTY(&xsoftc.ccb_scanq))
802 msleep(&xsoftc.ccb_scanq, &xsoftc.xpt_topo_lock, PRIBIO,
804 if ((ccb = (union ccb *)TAILQ_FIRST(&xsoftc.ccb_scanq)) != NULL) {
805 TAILQ_REMOVE(&xsoftc.ccb_scanq, &ccb->ccb_h, sim_links.tqe);
809 * We need to lock the device's mutex which we use as
810 * the path mutex. We can't do it directly because the
811 * cam_path in the ccb may wind up going away because
812 * the path lock may be dropped and the path retired in
813 * the completion callback. We do this directly to keep
814 * the reference counts in cam_path sane. We also have
815 * to copy the device pointer because ccb_h.path may
816 * be freed in the callback.
818 mtx = xpt_path_mtx(ccb->ccb_h.path);
819 device = ccb->ccb_h.path->device;
820 xpt_acquire_device(device);
824 xpt_release_device(device);
832 xpt_rescan(union ccb *ccb)
836 /* Prepare request */
837 if (ccb->ccb_h.path->target->target_id == CAM_TARGET_WILDCARD &&
838 ccb->ccb_h.path->device->lun_id == CAM_LUN_WILDCARD)
839 ccb->ccb_h.func_code = XPT_SCAN_BUS;
840 else if (ccb->ccb_h.path->target->target_id != CAM_TARGET_WILDCARD &&
841 ccb->ccb_h.path->device->lun_id == CAM_LUN_WILDCARD)
842 ccb->ccb_h.func_code = XPT_SCAN_TGT;
843 else if (ccb->ccb_h.path->target->target_id != CAM_TARGET_WILDCARD &&
844 ccb->ccb_h.path->device->lun_id != CAM_LUN_WILDCARD)
845 ccb->ccb_h.func_code = XPT_SCAN_LUN;
847 xpt_print(ccb->ccb_h.path, "illegal scan path\n");
848 xpt_free_path(ccb->ccb_h.path);
852 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE,
853 ("xpt_rescan: func %#x %s\n", ccb->ccb_h.func_code,
854 xpt_action_name(ccb->ccb_h.func_code)));
856 ccb->ccb_h.ppriv_ptr1 = ccb->ccb_h.cbfcnp;
857 ccb->ccb_h.cbfcnp = xpt_rescan_done;
858 xpt_setup_ccb(&ccb->ccb_h, ccb->ccb_h.path, CAM_PRIORITY_XPT);
859 /* Don't make duplicate entries for the same paths. */
861 if (ccb->ccb_h.ppriv_ptr1 == NULL) {
862 TAILQ_FOREACH(hdr, &xsoftc.ccb_scanq, sim_links.tqe) {
863 if (xpt_path_comp(hdr->path, ccb->ccb_h.path) == 0) {
864 wakeup(&xsoftc.ccb_scanq);
866 xpt_print(ccb->ccb_h.path, "rescan already queued\n");
867 xpt_free_path(ccb->ccb_h.path);
873 TAILQ_INSERT_TAIL(&xsoftc.ccb_scanq, &ccb->ccb_h, sim_links.tqe);
874 xpt_hold_boot_locked();
875 wakeup(&xsoftc.ccb_scanq);
879 /* Functions accessed by the peripheral drivers */
881 xpt_init(void *dummy)
883 struct cam_sim *xpt_sim;
884 struct cam_path *path;
885 struct cam_devq *devq;
889 TAILQ_INIT(&xsoftc.xpt_busses);
890 TAILQ_INIT(&xsoftc.ccb_scanq);
891 STAILQ_INIT(&xsoftc.highpowerq);
892 xsoftc.num_highpower = CAM_MAX_HIGHPOWER;
894 mtx_init(&xsoftc.xpt_highpower_lock, "XPT highpower lock", NULL, MTX_DEF);
895 xsoftc.xpt_taskq = taskqueue_create("CAM XPT task", M_WAITOK,
896 taskqueue_thread_enqueue, /*context*/&xsoftc.xpt_taskq);
898 #ifdef CAM_BOOT_DELAY
900 * Override this value at compile time to assist our users
901 * who don't use loader to boot a kernel.
903 xsoftc.boot_delay = CAM_BOOT_DELAY;
907 * The xpt layer is, itself, the equivalent of a SIM.
908 * Allow 16 ccbs in the ccb pool for it. This should
909 * give decent parallelism when we probe buses and
910 * perform other XPT functions.
912 devq = cam_simq_alloc(16);
913 xpt_sim = cam_sim_alloc(xptaction,
919 /*max_dev_transactions*/0,
920 /*max_tagged_dev_transactions*/0,
925 if ((error = xpt_bus_register(xpt_sim, NULL, 0)) != CAM_SUCCESS) {
926 printf("xpt_init: xpt_bus_register failed with errno %d,"
927 " failing attach\n", error);
932 * Looking at the XPT from the SIM layer, the XPT is
933 * the equivalent of a peripheral driver. Allocate
934 * a peripheral driver entry for us.
936 if ((status = xpt_create_path(&path, NULL, CAM_XPT_PATH_ID,
938 CAM_LUN_WILDCARD)) != CAM_REQ_CMP) {
939 printf("xpt_init: xpt_create_path failed with status %#x,"
940 " failing attach\n", status);
944 cam_periph_alloc(xptregister, NULL, NULL, NULL, "xpt", CAM_PERIPH_BIO,
945 path, NULL, 0, xpt_sim);
946 xpt_path_unlock(path);
949 if (cam_num_doneqs < 1)
950 cam_num_doneqs = 1 + mp_ncpus / 6;
951 else if (cam_num_doneqs > MAXCPU)
952 cam_num_doneqs = MAXCPU;
953 for (i = 0; i < cam_num_doneqs; i++) {
954 mtx_init(&cam_doneqs[i].cam_doneq_mtx, "CAM doneq", NULL,
956 STAILQ_INIT(&cam_doneqs[i].cam_doneq);
957 error = kproc_kthread_add(xpt_done_td, &cam_doneqs[i],
958 &cam_proc, NULL, 0, 0, "cam", "doneq%d", i);
964 if (cam_num_doneqs < 1) {
965 printf("xpt_init: Cannot init completion queues "
966 "- failing attach\n");
970 mtx_init(&cam_async.cam_doneq_mtx, "CAM async", NULL, MTX_DEF);
971 STAILQ_INIT(&cam_async.cam_doneq);
972 if (kproc_kthread_add(xpt_async_td, &cam_async,
973 &cam_proc, NULL, 0, 0, "cam", "async") != 0) {
974 printf("xpt_init: Cannot init async thread "
975 "- failing attach\n");
980 * Register a callback for when interrupts are enabled.
982 config_intrhook_oneshot(xpt_config, NULL);
988 xptregister(struct cam_periph *periph, void *arg)
990 struct cam_sim *xpt_sim;
992 if (periph == NULL) {
993 printf("xptregister: periph was NULL!!\n");
994 return(CAM_REQ_CMP_ERR);
997 xpt_sim = (struct cam_sim *)arg;
998 xpt_sim->softc = periph;
1000 periph->softc = NULL;
1002 return(CAM_REQ_CMP);
1006 xpt_add_periph(struct cam_periph *periph)
1008 struct cam_ed *device;
1011 TASK_INIT(&periph->periph_run_task, 0, xpt_run_allocq_task, periph);
1012 device = periph->path->device;
1013 status = CAM_REQ_CMP;
1014 if (device != NULL) {
1015 mtx_lock(&device->target->bus->eb_mtx);
1016 device->generation++;
1017 SLIST_INSERT_HEAD(&device->periphs, periph, periph_links);
1018 mtx_unlock(&device->target->bus->eb_mtx);
1019 atomic_add_32(&xsoftc.xpt_generation, 1);
1026 xpt_remove_periph(struct cam_periph *periph)
1028 struct cam_ed *device;
1030 device = periph->path->device;
1031 if (device != NULL) {
1032 mtx_lock(&device->target->bus->eb_mtx);
1033 device->generation++;
1034 SLIST_REMOVE(&device->periphs, periph, cam_periph, periph_links);
1035 mtx_unlock(&device->target->bus->eb_mtx);
1036 atomic_add_32(&xsoftc.xpt_generation, 1);
1041 xpt_announce_periph(struct cam_periph *periph, char *announce_string)
1046 (void)sbuf_new(&sb, buf, sizeof(buf), SBUF_FIXEDLEN | SBUF_INCLUDENUL);
1047 sbuf_set_drain(&sb, sbuf_printf_drain, NULL);
1048 xpt_announce_periph_sbuf(periph, &sb, announce_string);
1049 (void)sbuf_finish(&sb);
1053 xpt_announce_periph_sbuf(struct cam_periph *periph, struct sbuf *sb,
1054 char *announce_string)
1056 struct cam_path *path = periph->path;
1057 struct xpt_proto *proto;
1059 cam_periph_assert(periph, MA_OWNED);
1060 periph->flags |= CAM_PERIPH_ANNOUNCED;
1062 sbuf_printf(sb, "%s%d at %s%d bus %d scbus%d target %d lun %jx\n",
1063 periph->periph_name, periph->unit_number,
1064 path->bus->sim->sim_name,
1065 path->bus->sim->unit_number,
1066 path->bus->sim->bus_id,
1068 path->target->target_id,
1069 (uintmax_t)path->device->lun_id);
1070 sbuf_printf(sb, "%s%d: ", periph->periph_name, periph->unit_number);
1071 proto = xpt_proto_find(path->device->protocol);
1073 proto->ops->announce_sbuf(path->device, sb);
1075 sbuf_printf(sb, "Unknown protocol device %d\n",
1076 path->device->protocol);
1077 if (path->device->serial_num_len > 0) {
1078 /* Don't wrap the screen - print only the first 60 chars */
1079 sbuf_printf(sb, "%s%d: Serial Number %.60s\n",
1080 periph->periph_name, periph->unit_number,
1081 path->device->serial_num);
1083 /* Announce transport details. */
1084 path->bus->xport->ops->announce_sbuf(periph, sb);
1085 /* Announce command queueing. */
1086 if (path->device->inq_flags & SID_CmdQue
1087 || path->device->flags & CAM_DEV_TAG_AFTER_COUNT) {
1088 sbuf_printf(sb, "%s%d: Command Queueing enabled\n",
1089 periph->periph_name, periph->unit_number);
1091 /* Announce caller's details if they've passed in. */
1092 if (announce_string != NULL)
1093 sbuf_printf(sb, "%s%d: %s\n", periph->periph_name,
1094 periph->unit_number, announce_string);
1098 xpt_announce_quirks(struct cam_periph *periph, int quirks, char *bit_string)
1101 printf("%s%d: quirks=0x%b\n", periph->periph_name,
1102 periph->unit_number, quirks, bit_string);
1107 xpt_announce_quirks_sbuf(struct cam_periph *periph, struct sbuf *sb,
1108 int quirks, char *bit_string)
1111 sbuf_printf(sb, "%s%d: quirks=0x%b\n", periph->periph_name,
1112 periph->unit_number, quirks, bit_string);
1117 xpt_denounce_periph(struct cam_periph *periph)
1122 (void)sbuf_new(&sb, buf, sizeof(buf), SBUF_FIXEDLEN | SBUF_INCLUDENUL);
1123 sbuf_set_drain(&sb, sbuf_printf_drain, NULL);
1124 xpt_denounce_periph_sbuf(periph, &sb);
1125 (void)sbuf_finish(&sb);
1129 xpt_denounce_periph_sbuf(struct cam_periph *periph, struct sbuf *sb)
1131 struct cam_path *path = periph->path;
1132 struct xpt_proto *proto;
1134 cam_periph_assert(periph, MA_OWNED);
1136 sbuf_printf(sb, "%s%d at %s%d bus %d scbus%d target %d lun %jx\n",
1137 periph->periph_name, periph->unit_number,
1138 path->bus->sim->sim_name,
1139 path->bus->sim->unit_number,
1140 path->bus->sim->bus_id,
1142 path->target->target_id,
1143 (uintmax_t)path->device->lun_id);
1144 sbuf_printf(sb, "%s%d: ", periph->periph_name, periph->unit_number);
1145 proto = xpt_proto_find(path->device->protocol);
1147 proto->ops->denounce_sbuf(path->device, sb);
1149 sbuf_printf(sb, "Unknown protocol device %d",
1150 path->device->protocol);
1151 if (path->device->serial_num_len > 0)
1152 sbuf_printf(sb, " s/n %.60s", path->device->serial_num);
1153 sbuf_printf(sb, " detached\n");
1157 xpt_getattr(char *buf, size_t len, const char *attr, struct cam_path *path)
1160 struct ccb_dev_advinfo cdai;
1161 struct scsi_vpd_device_id *did;
1162 struct scsi_vpd_id_descriptor *idd;
1164 xpt_path_assert(path, MA_OWNED);
1166 memset(&cdai, 0, sizeof(cdai));
1167 xpt_setup_ccb(&cdai.ccb_h, path, CAM_PRIORITY_NORMAL);
1168 cdai.ccb_h.func_code = XPT_DEV_ADVINFO;
1169 cdai.flags = CDAI_FLAG_NONE;
1173 if (!strcmp(attr, "GEOM::ident"))
1174 cdai.buftype = CDAI_TYPE_SERIAL_NUM;
1175 else if (!strcmp(attr, "GEOM::physpath"))
1176 cdai.buftype = CDAI_TYPE_PHYS_PATH;
1177 else if (strcmp(attr, "GEOM::lunid") == 0 ||
1178 strcmp(attr, "GEOM::lunname") == 0) {
1179 cdai.buftype = CDAI_TYPE_SCSI_DEVID;
1180 cdai.bufsiz = CAM_SCSI_DEVID_MAXLEN;
1181 cdai.buf = malloc(cdai.bufsiz, M_CAMXPT, M_NOWAIT);
1182 if (cdai.buf == NULL) {
1189 xpt_action((union ccb *)&cdai); /* can only be synchronous */
1190 if ((cdai.ccb_h.status & CAM_DEV_QFRZN) != 0)
1191 cam_release_devq(cdai.ccb_h.path, 0, 0, 0, FALSE);
1192 if (cdai.provsiz == 0)
1194 switch(cdai.buftype) {
1195 case CDAI_TYPE_SCSI_DEVID:
1196 did = (struct scsi_vpd_device_id *)cdai.buf;
1197 if (strcmp(attr, "GEOM::lunid") == 0) {
1198 idd = scsi_get_devid(did, cdai.provsiz,
1199 scsi_devid_is_lun_naa);
1201 idd = scsi_get_devid(did, cdai.provsiz,
1202 scsi_devid_is_lun_eui64);
1204 idd = scsi_get_devid(did, cdai.provsiz,
1205 scsi_devid_is_lun_uuid);
1207 idd = scsi_get_devid(did, cdai.provsiz,
1208 scsi_devid_is_lun_md5);
1213 idd = scsi_get_devid(did, cdai.provsiz,
1214 scsi_devid_is_lun_t10);
1216 idd = scsi_get_devid(did, cdai.provsiz,
1217 scsi_devid_is_lun_name);
1222 if ((idd->proto_codeset & SVPD_ID_CODESET_MASK) ==
1223 SVPD_ID_CODESET_ASCII) {
1224 if (idd->length < len) {
1225 for (l = 0; l < idd->length; l++)
1226 buf[l] = idd->identifier[l] ?
1227 idd->identifier[l] : ' ';
1233 if ((idd->proto_codeset & SVPD_ID_CODESET_MASK) ==
1234 SVPD_ID_CODESET_UTF8) {
1235 l = strnlen(idd->identifier, idd->length);
1237 bcopy(idd->identifier, buf, l);
1243 if ((idd->id_type & SVPD_ID_TYPE_MASK) ==
1244 SVPD_ID_TYPE_UUID && idd->identifier[0] == 0x10) {
1245 if ((idd->length - 2) * 2 + 4 >= len) {
1249 for (l = 2, o = 0; l < idd->length; l++) {
1250 if (l == 6 || l == 8 || l == 10 || l == 12)
1251 o += sprintf(buf + o, "-");
1252 o += sprintf(buf + o, "%02x",
1253 idd->identifier[l]);
1257 if (idd->length * 2 < len) {
1258 for (l = 0; l < idd->length; l++)
1259 sprintf(buf + l * 2, "%02x",
1260 idd->identifier[l]);
1265 if (cdai.provsiz < len) {
1266 cdai.buf[cdai.provsiz] = 0;
1274 if ((char *)cdai.buf != buf)
1275 free(cdai.buf, M_CAMXPT);
1279 static dev_match_ret
1280 xptbusmatch(struct dev_match_pattern *patterns, u_int num_patterns,
1283 dev_match_ret retval;
1286 retval = DM_RET_NONE;
1289 * If we aren't given something to match against, that's an error.
1292 return(DM_RET_ERROR);
1295 * If there are no match entries, then this bus matches no
1298 if ((patterns == NULL) || (num_patterns == 0))
1299 return(DM_RET_DESCEND | DM_RET_COPY);
1301 for (i = 0; i < num_patterns; i++) {
1302 struct bus_match_pattern *cur_pattern;
1303 struct device_match_pattern *dp = &patterns[i].pattern.device_pattern;
1304 struct periph_match_pattern *pp = &patterns[i].pattern.periph_pattern;
1307 * If the pattern in question isn't for a bus node, we
1308 * aren't interested. However, we do indicate to the
1309 * calling routine that we should continue descending the
1310 * tree, since the user wants to match against lower-level
1313 if (patterns[i].type == DEV_MATCH_DEVICE &&
1314 (dp->flags & DEV_MATCH_PATH) != 0 &&
1315 dp->path_id != bus->path_id)
1317 if (patterns[i].type == DEV_MATCH_PERIPH &&
1318 (pp->flags & PERIPH_MATCH_PATH) != 0 &&
1319 pp->path_id != bus->path_id)
1321 if (patterns[i].type != DEV_MATCH_BUS) {
1322 if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)
1323 retval |= DM_RET_DESCEND;
1327 cur_pattern = &patterns[i].pattern.bus_pattern;
1329 if (((cur_pattern->flags & BUS_MATCH_PATH) != 0)
1330 && (cur_pattern->path_id != bus->path_id))
1333 if (((cur_pattern->flags & BUS_MATCH_BUS_ID) != 0)
1334 && (cur_pattern->bus_id != bus->sim->bus_id))
1337 if (((cur_pattern->flags & BUS_MATCH_UNIT) != 0)
1338 && (cur_pattern->unit_number != bus->sim->unit_number))
1341 if (((cur_pattern->flags & BUS_MATCH_NAME) != 0)
1342 && (strncmp(cur_pattern->dev_name, bus->sim->sim_name,
1347 * If we get to this point, the user definitely wants
1348 * information on this bus. So tell the caller to copy the
1351 retval |= DM_RET_COPY;
1354 * If the return action has been set to descend, then we
1355 * know that we've already seen a non-bus matching
1356 * expression, therefore we need to further descend the tree.
1357 * This won't change by continuing around the loop, so we
1358 * go ahead and return. If we haven't seen a non-bus
1359 * matching expression, we keep going around the loop until
1360 * we exhaust the matching expressions. We'll set the stop
1361 * flag once we fall out of the loop.
1363 if ((retval & DM_RET_ACTION_MASK) == DM_RET_DESCEND)
1368 * If the return action hasn't been set to descend yet, that means
1369 * we haven't seen anything other than bus matching patterns. So
1370 * tell the caller to stop descending the tree -- the user doesn't
1371 * want to match against lower level tree elements.
1373 if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)
1374 retval |= DM_RET_STOP;
1379 static dev_match_ret
1380 xptdevicematch(struct dev_match_pattern *patterns, u_int num_patterns,
1381 struct cam_ed *device)
1383 dev_match_ret retval;
1386 retval = DM_RET_NONE;
1389 * If we aren't given something to match against, that's an error.
1392 return(DM_RET_ERROR);
1395 * If there are no match entries, then this device matches no
1398 if ((patterns == NULL) || (num_patterns == 0))
1399 return(DM_RET_DESCEND | DM_RET_COPY);
1401 for (i = 0; i < num_patterns; i++) {
1402 struct device_match_pattern *cur_pattern;
1403 struct scsi_vpd_device_id *device_id_page;
1404 struct periph_match_pattern *pp = &patterns[i].pattern.periph_pattern;
1407 * If the pattern in question isn't for a device node, we
1408 * aren't interested.
1410 if (patterns[i].type == DEV_MATCH_PERIPH &&
1411 (pp->flags & PERIPH_MATCH_TARGET) != 0 &&
1412 pp->target_id != device->target->target_id)
1414 if (patterns[i].type == DEV_MATCH_PERIPH &&
1415 (pp->flags & PERIPH_MATCH_LUN) != 0 &&
1416 pp->target_lun != device->lun_id)
1418 if (patterns[i].type != DEV_MATCH_DEVICE) {
1419 if ((patterns[i].type == DEV_MATCH_PERIPH)
1420 && ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE))
1421 retval |= DM_RET_DESCEND;
1425 cur_pattern = &patterns[i].pattern.device_pattern;
1427 /* Error out if mutually exclusive options are specified. */
1428 if ((cur_pattern->flags & (DEV_MATCH_INQUIRY|DEV_MATCH_DEVID))
1429 == (DEV_MATCH_INQUIRY|DEV_MATCH_DEVID))
1430 return(DM_RET_ERROR);
1432 if (((cur_pattern->flags & DEV_MATCH_PATH) != 0)
1433 && (cur_pattern->path_id != device->target->bus->path_id))
1436 if (((cur_pattern->flags & DEV_MATCH_TARGET) != 0)
1437 && (cur_pattern->target_id != device->target->target_id))
1440 if (((cur_pattern->flags & DEV_MATCH_LUN) != 0)
1441 && (cur_pattern->target_lun != device->lun_id))
1444 if (((cur_pattern->flags & DEV_MATCH_INQUIRY) != 0)
1445 && (cam_quirkmatch((caddr_t)&device->inq_data,
1446 (caddr_t)&cur_pattern->data.inq_pat,
1447 1, sizeof(cur_pattern->data.inq_pat),
1448 scsi_static_inquiry_match) == NULL))
1451 device_id_page = (struct scsi_vpd_device_id *)device->device_id;
1452 if (((cur_pattern->flags & DEV_MATCH_DEVID) != 0)
1453 && (device->device_id_len < SVPD_DEVICE_ID_HDR_LEN
1454 || scsi_devid_match((uint8_t *)device_id_page->desc_list,
1455 device->device_id_len
1456 - SVPD_DEVICE_ID_HDR_LEN,
1457 cur_pattern->data.devid_pat.id,
1458 cur_pattern->data.devid_pat.id_len) != 0))
1462 * If we get to this point, the user definitely wants
1463 * information on this device. So tell the caller to copy
1466 retval |= DM_RET_COPY;
1469 * If the return action has been set to descend, then we
1470 * know that we've already seen a peripheral matching
1471 * expression, therefore we need to further descend the tree.
1472 * This won't change by continuing around the loop, so we
1473 * go ahead and return. If we haven't seen a peripheral
1474 * matching expression, we keep going around the loop until
1475 * we exhaust the matching expressions. We'll set the stop
1476 * flag once we fall out of the loop.
1478 if ((retval & DM_RET_ACTION_MASK) == DM_RET_DESCEND)
1483 * If the return action hasn't been set to descend yet, that means
1484 * we haven't seen any peripheral matching patterns. So tell the
1485 * caller to stop descending the tree -- the user doesn't want to
1486 * match against lower level tree elements.
1488 if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)
1489 retval |= DM_RET_STOP;
1495 * Match a single peripheral against any number of match patterns.
1497 static dev_match_ret
1498 xptperiphmatch(struct dev_match_pattern *patterns, u_int num_patterns,
1499 struct cam_periph *periph)
1501 dev_match_ret retval;
1505 * If we aren't given something to match against, that's an error.
1508 return(DM_RET_ERROR);
1511 * If there are no match entries, then this peripheral matches no
1514 if ((patterns == NULL) || (num_patterns == 0))
1515 return(DM_RET_STOP | DM_RET_COPY);
1518 * There aren't any nodes below a peripheral node, so there's no
1519 * reason to descend the tree any further.
1521 retval = DM_RET_STOP;
1523 for (i = 0; i < num_patterns; i++) {
1524 struct periph_match_pattern *cur_pattern;
1527 * If the pattern in question isn't for a peripheral, we
1528 * aren't interested.
1530 if (patterns[i].type != DEV_MATCH_PERIPH)
1533 cur_pattern = &patterns[i].pattern.periph_pattern;
1535 if (((cur_pattern->flags & PERIPH_MATCH_PATH) != 0)
1536 && (cur_pattern->path_id != periph->path->bus->path_id))
1540 * For the target and lun id's, we have to make sure the
1541 * target and lun pointers aren't NULL. The xpt peripheral
1542 * has a wildcard target and device.
1544 if (((cur_pattern->flags & PERIPH_MATCH_TARGET) != 0)
1545 && ((periph->path->target == NULL)
1546 ||(cur_pattern->target_id != periph->path->target->target_id)))
1549 if (((cur_pattern->flags & PERIPH_MATCH_LUN) != 0)
1550 && ((periph->path->device == NULL)
1551 || (cur_pattern->target_lun != periph->path->device->lun_id)))
1554 if (((cur_pattern->flags & PERIPH_MATCH_UNIT) != 0)
1555 && (cur_pattern->unit_number != periph->unit_number))
1558 if (((cur_pattern->flags & PERIPH_MATCH_NAME) != 0)
1559 && (strncmp(cur_pattern->periph_name, periph->periph_name,
1564 * If we get to this point, the user definitely wants
1565 * information on this peripheral. So tell the caller to
1566 * copy the data out.
1568 retval |= DM_RET_COPY;
1571 * The return action has already been set to stop, since
1572 * peripherals don't have any nodes below them in the EDT.
1578 * If we get to this point, the peripheral that was passed in
1579 * doesn't match any of the patterns.
1585 xptedtbusfunc(struct cam_eb *bus, void *arg)
1587 struct ccb_dev_match *cdm;
1588 struct cam_et *target;
1589 dev_match_ret retval;
1591 cdm = (struct ccb_dev_match *)arg;
1594 * If our position is for something deeper in the tree, that means
1595 * that we've already seen this node. So, we keep going down.
1597 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
1598 && (cdm->pos.cookie.bus == bus)
1599 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
1600 && (cdm->pos.cookie.target != NULL))
1601 retval = DM_RET_DESCEND;
1603 retval = xptbusmatch(cdm->patterns, cdm->num_patterns, bus);
1606 * If we got an error, bail out of the search.
1608 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
1609 cdm->status = CAM_DEV_MATCH_ERROR;
1614 * If the copy flag is set, copy this bus out.
1616 if (retval & DM_RET_COPY) {
1619 spaceleft = cdm->match_buf_len - (cdm->num_matches *
1620 sizeof(struct dev_match_result));
1623 * If we don't have enough space to put in another
1624 * match result, save our position and tell the
1625 * user there are more devices to check.
1627 if (spaceleft < sizeof(struct dev_match_result)) {
1628 bzero(&cdm->pos, sizeof(cdm->pos));
1629 cdm->pos.position_type =
1630 CAM_DEV_POS_EDT | CAM_DEV_POS_BUS;
1632 cdm->pos.cookie.bus = bus;
1633 cdm->pos.generations[CAM_BUS_GENERATION]=
1634 xsoftc.bus_generation;
1635 cdm->status = CAM_DEV_MATCH_MORE;
1638 j = cdm->num_matches;
1640 cdm->matches[j].type = DEV_MATCH_BUS;
1641 cdm->matches[j].result.bus_result.path_id = bus->path_id;
1642 cdm->matches[j].result.bus_result.bus_id = bus->sim->bus_id;
1643 cdm->matches[j].result.bus_result.unit_number =
1644 bus->sim->unit_number;
1645 strlcpy(cdm->matches[j].result.bus_result.dev_name,
1647 sizeof(cdm->matches[j].result.bus_result.dev_name));
1651 * If the user is only interested in buses, there's no
1652 * reason to descend to the next level in the tree.
1654 if ((retval & DM_RET_ACTION_MASK) == DM_RET_STOP)
1658 * If there is a target generation recorded, check it to
1659 * make sure the target list hasn't changed.
1661 mtx_lock(&bus->eb_mtx);
1662 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
1663 && (cdm->pos.cookie.bus == bus)
1664 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
1665 && (cdm->pos.cookie.target != NULL)) {
1666 if ((cdm->pos.generations[CAM_TARGET_GENERATION] !=
1668 mtx_unlock(&bus->eb_mtx);
1669 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
1672 target = (struct cam_et *)cdm->pos.cookie.target;
1676 mtx_unlock(&bus->eb_mtx);
1678 return (xpttargettraverse(bus, target, xptedttargetfunc, arg));
1682 xptedttargetfunc(struct cam_et *target, void *arg)
1684 struct ccb_dev_match *cdm;
1686 struct cam_ed *device;
1688 cdm = (struct ccb_dev_match *)arg;
1692 * If there is a device list generation recorded, check it to
1693 * make sure the device list hasn't changed.
1695 mtx_lock(&bus->eb_mtx);
1696 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
1697 && (cdm->pos.cookie.bus == bus)
1698 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
1699 && (cdm->pos.cookie.target == target)
1700 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
1701 && (cdm->pos.cookie.device != NULL)) {
1702 if (cdm->pos.generations[CAM_DEV_GENERATION] !=
1703 target->generation) {
1704 mtx_unlock(&bus->eb_mtx);
1705 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
1708 device = (struct cam_ed *)cdm->pos.cookie.device;
1712 mtx_unlock(&bus->eb_mtx);
1714 return (xptdevicetraverse(target, device, xptedtdevicefunc, arg));
1718 xptedtdevicefunc(struct cam_ed *device, void *arg)
1721 struct cam_periph *periph;
1722 struct ccb_dev_match *cdm;
1723 dev_match_ret retval;
1725 cdm = (struct ccb_dev_match *)arg;
1726 bus = device->target->bus;
1729 * If our position is for something deeper in the tree, that means
1730 * that we've already seen this node. So, we keep going down.
1732 if ((cdm->pos.position_type & CAM_DEV_POS_DEVICE)
1733 && (cdm->pos.cookie.device == device)
1734 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
1735 && (cdm->pos.cookie.periph != NULL))
1736 retval = DM_RET_DESCEND;
1738 retval = xptdevicematch(cdm->patterns, cdm->num_patterns,
1741 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
1742 cdm->status = CAM_DEV_MATCH_ERROR;
1747 * If the copy flag is set, copy this device out.
1749 if (retval & DM_RET_COPY) {
1752 spaceleft = cdm->match_buf_len - (cdm->num_matches *
1753 sizeof(struct dev_match_result));
1756 * If we don't have enough space to put in another
1757 * match result, save our position and tell the
1758 * user there are more devices to check.
1760 if (spaceleft < sizeof(struct dev_match_result)) {
1761 bzero(&cdm->pos, sizeof(cdm->pos));
1762 cdm->pos.position_type =
1763 CAM_DEV_POS_EDT | CAM_DEV_POS_BUS |
1764 CAM_DEV_POS_TARGET | CAM_DEV_POS_DEVICE;
1766 cdm->pos.cookie.bus = device->target->bus;
1767 cdm->pos.generations[CAM_BUS_GENERATION]=
1768 xsoftc.bus_generation;
1769 cdm->pos.cookie.target = device->target;
1770 cdm->pos.generations[CAM_TARGET_GENERATION] =
1771 device->target->bus->generation;
1772 cdm->pos.cookie.device = device;
1773 cdm->pos.generations[CAM_DEV_GENERATION] =
1774 device->target->generation;
1775 cdm->status = CAM_DEV_MATCH_MORE;
1778 j = cdm->num_matches;
1780 cdm->matches[j].type = DEV_MATCH_DEVICE;
1781 cdm->matches[j].result.device_result.path_id =
1782 device->target->bus->path_id;
1783 cdm->matches[j].result.device_result.target_id =
1784 device->target->target_id;
1785 cdm->matches[j].result.device_result.target_lun =
1787 cdm->matches[j].result.device_result.protocol =
1789 bcopy(&device->inq_data,
1790 &cdm->matches[j].result.device_result.inq_data,
1791 sizeof(struct scsi_inquiry_data));
1792 bcopy(&device->ident_data,
1793 &cdm->matches[j].result.device_result.ident_data,
1794 sizeof(struct ata_params));
1796 /* Let the user know whether this device is unconfigured */
1797 if (device->flags & CAM_DEV_UNCONFIGURED)
1798 cdm->matches[j].result.device_result.flags =
1799 DEV_RESULT_UNCONFIGURED;
1801 cdm->matches[j].result.device_result.flags =
1806 * If the user isn't interested in peripherals, don't descend
1807 * the tree any further.
1809 if ((retval & DM_RET_ACTION_MASK) == DM_RET_STOP)
1813 * If there is a peripheral list generation recorded, make sure
1814 * it hasn't changed.
1817 mtx_lock(&bus->eb_mtx);
1818 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
1819 && (cdm->pos.cookie.bus == bus)
1820 && (cdm->pos.position_type & CAM_DEV_POS_TARGET)
1821 && (cdm->pos.cookie.target == device->target)
1822 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE)
1823 && (cdm->pos.cookie.device == device)
1824 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
1825 && (cdm->pos.cookie.periph != NULL)) {
1826 if (cdm->pos.generations[CAM_PERIPH_GENERATION] !=
1827 device->generation) {
1828 mtx_unlock(&bus->eb_mtx);
1830 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
1833 periph = (struct cam_periph *)cdm->pos.cookie.periph;
1837 mtx_unlock(&bus->eb_mtx);
1840 return (xptperiphtraverse(device, periph, xptedtperiphfunc, arg));
1844 xptedtperiphfunc(struct cam_periph *periph, void *arg)
1846 struct ccb_dev_match *cdm;
1847 dev_match_ret retval;
1849 cdm = (struct ccb_dev_match *)arg;
1851 retval = xptperiphmatch(cdm->patterns, cdm->num_patterns, periph);
1853 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
1854 cdm->status = CAM_DEV_MATCH_ERROR;
1859 * If the copy flag is set, copy this peripheral out.
1861 if (retval & DM_RET_COPY) {
1865 spaceleft = cdm->match_buf_len - (cdm->num_matches *
1866 sizeof(struct dev_match_result));
1869 * If we don't have enough space to put in another
1870 * match result, save our position and tell the
1871 * user there are more devices to check.
1873 if (spaceleft < sizeof(struct dev_match_result)) {
1874 bzero(&cdm->pos, sizeof(cdm->pos));
1875 cdm->pos.position_type =
1876 CAM_DEV_POS_EDT | CAM_DEV_POS_BUS |
1877 CAM_DEV_POS_TARGET | CAM_DEV_POS_DEVICE |
1880 cdm->pos.cookie.bus = periph->path->bus;
1881 cdm->pos.generations[CAM_BUS_GENERATION]=
1882 xsoftc.bus_generation;
1883 cdm->pos.cookie.target = periph->path->target;
1884 cdm->pos.generations[CAM_TARGET_GENERATION] =
1885 periph->path->bus->generation;
1886 cdm->pos.cookie.device = periph->path->device;
1887 cdm->pos.generations[CAM_DEV_GENERATION] =
1888 periph->path->target->generation;
1889 cdm->pos.cookie.periph = periph;
1890 cdm->pos.generations[CAM_PERIPH_GENERATION] =
1891 periph->path->device->generation;
1892 cdm->status = CAM_DEV_MATCH_MORE;
1896 j = cdm->num_matches;
1898 cdm->matches[j].type = DEV_MATCH_PERIPH;
1899 cdm->matches[j].result.periph_result.path_id =
1900 periph->path->bus->path_id;
1901 cdm->matches[j].result.periph_result.target_id =
1902 periph->path->target->target_id;
1903 cdm->matches[j].result.periph_result.target_lun =
1904 periph->path->device->lun_id;
1905 cdm->matches[j].result.periph_result.unit_number =
1906 periph->unit_number;
1907 l = sizeof(cdm->matches[j].result.periph_result.periph_name);
1908 strlcpy(cdm->matches[j].result.periph_result.periph_name,
1909 periph->periph_name, l);
1916 xptedtmatch(struct ccb_dev_match *cdm)
1921 cdm->num_matches = 0;
1924 * Check the bus list generation. If it has changed, the user
1925 * needs to reset everything and start over.
1928 if ((cdm->pos.position_type & CAM_DEV_POS_BUS)
1929 && (cdm->pos.cookie.bus != NULL)) {
1930 if (cdm->pos.generations[CAM_BUS_GENERATION] !=
1931 xsoftc.bus_generation) {
1933 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
1936 bus = (struct cam_eb *)cdm->pos.cookie.bus;
1942 ret = xptbustraverse(bus, xptedtbusfunc, cdm);
1945 * If we get back 0, that means that we had to stop before fully
1946 * traversing the EDT. It also means that one of the subroutines
1947 * has set the status field to the proper value. If we get back 1,
1948 * we've fully traversed the EDT and copied out any matching entries.
1951 cdm->status = CAM_DEV_MATCH_LAST;
1957 xptplistpdrvfunc(struct periph_driver **pdrv, void *arg)
1959 struct cam_periph *periph;
1960 struct ccb_dev_match *cdm;
1962 cdm = (struct ccb_dev_match *)arg;
1965 if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR)
1966 && (cdm->pos.cookie.pdrv == pdrv)
1967 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH)
1968 && (cdm->pos.cookie.periph != NULL)) {
1969 if (cdm->pos.generations[CAM_PERIPH_GENERATION] !=
1970 (*pdrv)->generation) {
1972 cdm->status = CAM_DEV_MATCH_LIST_CHANGED;
1975 periph = (struct cam_periph *)cdm->pos.cookie.periph;
1981 return (xptpdperiphtraverse(pdrv, periph, xptplistperiphfunc, arg));
1985 xptplistperiphfunc(struct cam_periph *periph, void *arg)
1987 struct ccb_dev_match *cdm;
1988 dev_match_ret retval;
1990 cdm = (struct ccb_dev_match *)arg;
1992 retval = xptperiphmatch(cdm->patterns, cdm->num_patterns, periph);
1994 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) {
1995 cdm->status = CAM_DEV_MATCH_ERROR;
2000 * If the copy flag is set, copy this peripheral out.
2002 if (retval & DM_RET_COPY) {
2006 spaceleft = cdm->match_buf_len - (cdm->num_matches *
2007 sizeof(struct dev_match_result));
2010 * If we don't have enough space to put in another
2011 * match result, save our position and tell the
2012 * user there are more devices to check.
2014 if (spaceleft < sizeof(struct dev_match_result)) {
2015 struct periph_driver **pdrv;
2018 bzero(&cdm->pos, sizeof(cdm->pos));
2019 cdm->pos.position_type =
2020 CAM_DEV_POS_PDRV | CAM_DEV_POS_PDPTR |
2024 * This may look a bit non-sensical, but it is
2025 * actually quite logical. There are very few
2026 * peripheral drivers, and bloating every peripheral
2027 * structure with a pointer back to its parent
2028 * peripheral driver linker set entry would cost
2029 * more in the long run than doing this quick lookup.
2031 for (pdrv = periph_drivers; *pdrv != NULL; pdrv++) {
2032 if (strcmp((*pdrv)->driver_name,
2033 periph->periph_name) == 0)
2037 if (*pdrv == NULL) {
2038 cdm->status = CAM_DEV_MATCH_ERROR;
2042 cdm->pos.cookie.pdrv = pdrv;
2044 * The periph generation slot does double duty, as
2045 * does the periph pointer slot. They are used for
2046 * both edt and pdrv lookups and positioning.
2048 cdm->pos.cookie.periph = periph;
2049 cdm->pos.generations[CAM_PERIPH_GENERATION] =
2050 (*pdrv)->generation;
2051 cdm->status = CAM_DEV_MATCH_MORE;
2055 j = cdm->num_matches;
2057 cdm->matches[j].type = DEV_MATCH_PERIPH;
2058 cdm->matches[j].result.periph_result.path_id =
2059 periph->path->bus->path_id;
2062 * The transport layer peripheral doesn't have a target or
2065 if (periph->path->target)
2066 cdm->matches[j].result.periph_result.target_id =
2067 periph->path->target->target_id;
2069 cdm->matches[j].result.periph_result.target_id =
2070 CAM_TARGET_WILDCARD;
2072 if (periph->path->device)
2073 cdm->matches[j].result.periph_result.target_lun =
2074 periph->path->device->lun_id;
2076 cdm->matches[j].result.periph_result.target_lun =
2079 cdm->matches[j].result.periph_result.unit_number =
2080 periph->unit_number;
2081 l = sizeof(cdm->matches[j].result.periph_result.periph_name);
2082 strlcpy(cdm->matches[j].result.periph_result.periph_name,
2083 periph->periph_name, l);
2090 xptperiphlistmatch(struct ccb_dev_match *cdm)
2094 cdm->num_matches = 0;
2097 * At this point in the edt traversal function, we check the bus
2098 * list generation to make sure that no buses have been added or
2099 * removed since the user last sent a XPT_DEV_MATCH ccb through.
2100 * For the peripheral driver list traversal function, however, we
2101 * don't have to worry about new peripheral driver types coming or
2102 * going; they're in a linker set, and therefore can't change
2103 * without a recompile.
2106 if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR)
2107 && (cdm->pos.cookie.pdrv != NULL))
2108 ret = xptpdrvtraverse(
2109 (struct periph_driver **)cdm->pos.cookie.pdrv,
2110 xptplistpdrvfunc, cdm);
2112 ret = xptpdrvtraverse(NULL, xptplistpdrvfunc, cdm);
2115 * If we get back 0, that means that we had to stop before fully
2116 * traversing the peripheral driver tree. It also means that one of
2117 * the subroutines has set the status field to the proper value. If
2118 * we get back 1, we've fully traversed the EDT and copied out any
2122 cdm->status = CAM_DEV_MATCH_LAST;
2128 xptbustraverse(struct cam_eb *start_bus, xpt_busfunc_t *tr_func, void *arg)
2130 struct cam_eb *bus, *next_bus;
2138 bus = TAILQ_FIRST(&xsoftc.xpt_busses);
2146 for (; bus != NULL; bus = next_bus) {
2147 retval = tr_func(bus, arg);
2149 xpt_release_bus(bus);
2153 next_bus = TAILQ_NEXT(bus, links);
2155 next_bus->refcount++;
2157 xpt_release_bus(bus);
2163 xpttargettraverse(struct cam_eb *bus, struct cam_et *start_target,
2164 xpt_targetfunc_t *tr_func, void *arg)
2166 struct cam_et *target, *next_target;
2171 target = start_target;
2173 mtx_lock(&bus->eb_mtx);
2174 target = TAILQ_FIRST(&bus->et_entries);
2175 if (target == NULL) {
2176 mtx_unlock(&bus->eb_mtx);
2180 mtx_unlock(&bus->eb_mtx);
2182 for (; target != NULL; target = next_target) {
2183 retval = tr_func(target, arg);
2185 xpt_release_target(target);
2188 mtx_lock(&bus->eb_mtx);
2189 next_target = TAILQ_NEXT(target, links);
2191 next_target->refcount++;
2192 mtx_unlock(&bus->eb_mtx);
2193 xpt_release_target(target);
2199 xptdevicetraverse(struct cam_et *target, struct cam_ed *start_device,
2200 xpt_devicefunc_t *tr_func, void *arg)
2203 struct cam_ed *device, *next_device;
2209 device = start_device;
2211 mtx_lock(&bus->eb_mtx);
2212 device = TAILQ_FIRST(&target->ed_entries);
2213 if (device == NULL) {
2214 mtx_unlock(&bus->eb_mtx);
2218 mtx_unlock(&bus->eb_mtx);
2220 for (; device != NULL; device = next_device) {
2221 mtx_lock(&device->device_mtx);
2222 retval = tr_func(device, arg);
2223 mtx_unlock(&device->device_mtx);
2225 xpt_release_device(device);
2228 mtx_lock(&bus->eb_mtx);
2229 next_device = TAILQ_NEXT(device, links);
2231 next_device->refcount++;
2232 mtx_unlock(&bus->eb_mtx);
2233 xpt_release_device(device);
2239 xptperiphtraverse(struct cam_ed *device, struct cam_periph *start_periph,
2240 xpt_periphfunc_t *tr_func, void *arg)
2243 struct cam_periph *periph, *next_periph;
2248 bus = device->target->bus;
2250 periph = start_periph;
2253 mtx_lock(&bus->eb_mtx);
2254 periph = SLIST_FIRST(&device->periphs);
2255 while (periph != NULL && (periph->flags & CAM_PERIPH_FREE) != 0)
2256 periph = SLIST_NEXT(periph, periph_links);
2257 if (periph == NULL) {
2258 mtx_unlock(&bus->eb_mtx);
2263 mtx_unlock(&bus->eb_mtx);
2266 for (; periph != NULL; periph = next_periph) {
2267 retval = tr_func(periph, arg);
2269 cam_periph_release_locked(periph);
2273 mtx_lock(&bus->eb_mtx);
2274 next_periph = SLIST_NEXT(periph, periph_links);
2275 while (next_periph != NULL &&
2276 (next_periph->flags & CAM_PERIPH_FREE) != 0)
2277 next_periph = SLIST_NEXT(next_periph, periph_links);
2279 next_periph->refcount++;
2280 mtx_unlock(&bus->eb_mtx);
2282 cam_periph_release_locked(periph);
2288 xptpdrvtraverse(struct periph_driver **start_pdrv,
2289 xpt_pdrvfunc_t *tr_func, void *arg)
2291 struct periph_driver **pdrv;
2297 * We don't traverse the peripheral driver list like we do the
2298 * other lists, because it is a linker set, and therefore cannot be
2299 * changed during runtime. If the peripheral driver list is ever
2300 * re-done to be something other than a linker set (i.e. it can
2301 * change while the system is running), the list traversal should
2302 * be modified to work like the other traversal functions.
2304 for (pdrv = (start_pdrv ? start_pdrv : periph_drivers);
2305 *pdrv != NULL; pdrv++) {
2306 retval = tr_func(pdrv, arg);
2316 xptpdperiphtraverse(struct periph_driver **pdrv,
2317 struct cam_periph *start_periph,
2318 xpt_periphfunc_t *tr_func, void *arg)
2320 struct cam_periph *periph, *next_periph;
2326 periph = start_periph;
2329 periph = TAILQ_FIRST(&(*pdrv)->units);
2330 while (periph != NULL && (periph->flags & CAM_PERIPH_FREE) != 0)
2331 periph = TAILQ_NEXT(periph, unit_links);
2332 if (periph == NULL) {
2339 for (; periph != NULL; periph = next_periph) {
2340 cam_periph_lock(periph);
2341 retval = tr_func(periph, arg);
2342 cam_periph_unlock(periph);
2344 cam_periph_release(periph);
2348 next_periph = TAILQ_NEXT(periph, unit_links);
2349 while (next_periph != NULL &&
2350 (next_periph->flags & CAM_PERIPH_FREE) != 0)
2351 next_periph = TAILQ_NEXT(next_periph, unit_links);
2353 next_periph->refcount++;
2355 cam_periph_release(periph);
2361 xptdefbusfunc(struct cam_eb *bus, void *arg)
2363 struct xpt_traverse_config *tr_config;
2365 tr_config = (struct xpt_traverse_config *)arg;
2367 if (tr_config->depth == XPT_DEPTH_BUS) {
2368 xpt_busfunc_t *tr_func;
2370 tr_func = (xpt_busfunc_t *)tr_config->tr_func;
2372 return(tr_func(bus, tr_config->tr_arg));
2374 return(xpttargettraverse(bus, NULL, xptdeftargetfunc, arg));
2378 xptdeftargetfunc(struct cam_et *target, void *arg)
2380 struct xpt_traverse_config *tr_config;
2382 tr_config = (struct xpt_traverse_config *)arg;
2384 if (tr_config->depth == XPT_DEPTH_TARGET) {
2385 xpt_targetfunc_t *tr_func;
2387 tr_func = (xpt_targetfunc_t *)tr_config->tr_func;
2389 return(tr_func(target, tr_config->tr_arg));
2391 return(xptdevicetraverse(target, NULL, xptdefdevicefunc, arg));
2395 xptdefdevicefunc(struct cam_ed *device, void *arg)
2397 struct xpt_traverse_config *tr_config;
2399 tr_config = (struct xpt_traverse_config *)arg;
2401 if (tr_config->depth == XPT_DEPTH_DEVICE) {
2402 xpt_devicefunc_t *tr_func;
2404 tr_func = (xpt_devicefunc_t *)tr_config->tr_func;
2406 return(tr_func(device, tr_config->tr_arg));
2408 return(xptperiphtraverse(device, NULL, xptdefperiphfunc, arg));
2412 xptdefperiphfunc(struct cam_periph *periph, void *arg)
2414 struct xpt_traverse_config *tr_config;
2415 xpt_periphfunc_t *tr_func;
2417 tr_config = (struct xpt_traverse_config *)arg;
2419 tr_func = (xpt_periphfunc_t *)tr_config->tr_func;
2422 * Unlike the other default functions, we don't check for depth
2423 * here. The peripheral driver level is the last level in the EDT,
2424 * so if we're here, we should execute the function in question.
2426 return(tr_func(periph, tr_config->tr_arg));
2430 * Execute the given function for every bus in the EDT.
2433 xpt_for_all_busses(xpt_busfunc_t *tr_func, void *arg)
2435 struct xpt_traverse_config tr_config;
2437 tr_config.depth = XPT_DEPTH_BUS;
2438 tr_config.tr_func = tr_func;
2439 tr_config.tr_arg = arg;
2441 return(xptbustraverse(NULL, xptdefbusfunc, &tr_config));
2445 * Execute the given function for every device in the EDT.
2448 xpt_for_all_devices(xpt_devicefunc_t *tr_func, void *arg)
2450 struct xpt_traverse_config tr_config;
2452 tr_config.depth = XPT_DEPTH_DEVICE;
2453 tr_config.tr_func = tr_func;
2454 tr_config.tr_arg = arg;
2456 return(xptbustraverse(NULL, xptdefbusfunc, &tr_config));
2460 xptsetasyncfunc(struct cam_ed *device, void *arg)
2462 struct cam_path path;
2463 struct ccb_getdev cgd;
2464 struct ccb_setasync *csa = (struct ccb_setasync *)arg;
2467 * Don't report unconfigured devices (Wildcard devs,
2468 * devices only for target mode, device instances
2469 * that have been invalidated but are waiting for
2470 * their last reference count to be released).
2472 if ((device->flags & CAM_DEV_UNCONFIGURED) != 0)
2475 memset(&cgd, 0, sizeof(cgd));
2476 xpt_compile_path(&path,
2478 device->target->bus->path_id,
2479 device->target->target_id,
2481 xpt_setup_ccb(&cgd.ccb_h, &path, CAM_PRIORITY_NORMAL);
2482 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
2483 xpt_action((union ccb *)&cgd);
2484 csa->callback(csa->callback_arg,
2487 xpt_release_path(&path);
2493 xptsetasyncbusfunc(struct cam_eb *bus, void *arg)
2495 struct cam_path path;
2496 struct ccb_pathinq cpi;
2497 struct ccb_setasync *csa = (struct ccb_setasync *)arg;
2499 xpt_compile_path(&path, /*periph*/NULL,
2501 CAM_TARGET_WILDCARD,
2503 xpt_path_lock(&path);
2504 xpt_path_inq(&cpi, &path);
2505 csa->callback(csa->callback_arg,
2508 xpt_path_unlock(&path);
2509 xpt_release_path(&path);
2515 xpt_action(union ccb *start_ccb)
2518 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_TRACE,
2519 ("xpt_action: func %#x %s\n", start_ccb->ccb_h.func_code,
2520 xpt_action_name(start_ccb->ccb_h.func_code)));
2522 start_ccb->ccb_h.status = CAM_REQ_INPROG;
2523 (*(start_ccb->ccb_h.path->bus->xport->ops->action))(start_ccb);
2527 xpt_action_default(union ccb *start_ccb)
2529 struct cam_path *path;
2530 struct cam_sim *sim;
2533 path = start_ccb->ccb_h.path;
2534 CAM_DEBUG(path, CAM_DEBUG_TRACE,
2535 ("xpt_action_default: func %#x %s\n", start_ccb->ccb_h.func_code,
2536 xpt_action_name(start_ccb->ccb_h.func_code)));
2538 switch (start_ccb->ccb_h.func_code) {
2541 struct cam_ed *device;
2544 * For the sake of compatibility with SCSI-1
2545 * devices that may not understand the identify
2546 * message, we include lun information in the
2547 * second byte of all commands. SCSI-1 specifies
2548 * that luns are a 3 bit value and reserves only 3
2549 * bits for lun information in the CDB. Later
2550 * revisions of the SCSI spec allow for more than 8
2551 * luns, but have deprecated lun information in the
2552 * CDB. So, if the lun won't fit, we must omit.
2554 * Also be aware that during initial probing for devices,
2555 * the inquiry information is unknown but initialized to 0.
2556 * This means that this code will be exercised while probing
2557 * devices with an ANSI revision greater than 2.
2559 device = path->device;
2560 if (device->protocol_version <= SCSI_REV_2
2561 && start_ccb->ccb_h.target_lun < 8
2562 && (start_ccb->ccb_h.flags & CAM_CDB_POINTER) == 0) {
2563 start_ccb->csio.cdb_io.cdb_bytes[1] |=
2564 start_ccb->ccb_h.target_lun << 5;
2566 start_ccb->csio.scsi_status = SCSI_STATUS_OK;
2570 case XPT_CONT_TARGET_IO:
2571 start_ccb->csio.sense_resid = 0;
2572 start_ccb->csio.resid = 0;
2575 if (start_ccb->ccb_h.func_code == XPT_ATA_IO)
2576 start_ccb->ataio.resid = 0;
2579 case XPT_NVME_ADMIN:
2581 case XPT_MMC_GET_TRAN_SETTINGS:
2582 case XPT_MMC_SET_TRAN_SETTINGS:
2587 struct cam_devq *devq;
2589 devq = path->bus->sim->devq;
2590 mtx_lock(&devq->send_mtx);
2591 cam_ccbq_insert_ccb(&path->device->ccbq, start_ccb);
2592 if (xpt_schedule_devq(devq, path->device) != 0)
2594 mtx_unlock(&devq->send_mtx);
2597 case XPT_CALC_GEOMETRY:
2598 /* Filter out garbage */
2599 if (start_ccb->ccg.block_size == 0
2600 || start_ccb->ccg.volume_size == 0) {
2601 start_ccb->ccg.cylinders = 0;
2602 start_ccb->ccg.heads = 0;
2603 start_ccb->ccg.secs_per_track = 0;
2604 start_ccb->ccb_h.status = CAM_REQ_CMP;
2610 union ccb* abort_ccb;
2612 abort_ccb = start_ccb->cab.abort_ccb;
2613 if (XPT_FC_IS_DEV_QUEUED(abort_ccb)) {
2614 struct cam_ed *device;
2615 struct cam_devq *devq;
2617 device = abort_ccb->ccb_h.path->device;
2618 devq = device->sim->devq;
2620 mtx_lock(&devq->send_mtx);
2621 if (abort_ccb->ccb_h.pinfo.index > 0) {
2622 cam_ccbq_remove_ccb(&device->ccbq, abort_ccb);
2623 abort_ccb->ccb_h.status =
2624 CAM_REQ_ABORTED|CAM_DEV_QFRZN;
2625 xpt_freeze_devq_device(device, 1);
2626 mtx_unlock(&devq->send_mtx);
2627 xpt_done(abort_ccb);
2628 start_ccb->ccb_h.status = CAM_REQ_CMP;
2631 mtx_unlock(&devq->send_mtx);
2633 if (abort_ccb->ccb_h.pinfo.index == CAM_UNQUEUED_INDEX
2634 && (abort_ccb->ccb_h.status & CAM_SIM_QUEUED) == 0) {
2636 * We've caught this ccb en route to
2637 * the SIM. Flag it for abort and the
2638 * SIM will do so just before starting
2639 * real work on the CCB.
2641 abort_ccb->ccb_h.status =
2642 CAM_REQ_ABORTED|CAM_DEV_QFRZN;
2643 xpt_freeze_devq(abort_ccb->ccb_h.path, 1);
2644 start_ccb->ccb_h.status = CAM_REQ_CMP;
2648 if (XPT_FC_IS_QUEUED(abort_ccb)
2649 && (abort_ccb->ccb_h.pinfo.index == CAM_DONEQ_INDEX)) {
2651 * It's already completed but waiting
2652 * for our SWI to get to it.
2654 start_ccb->ccb_h.status = CAM_UA_ABORT;
2658 * If we weren't able to take care of the abort request
2659 * in the XPT, pass the request down to the SIM for processing.
2663 case XPT_ACCEPT_TARGET_IO:
2665 case XPT_IMMED_NOTIFY:
2666 case XPT_NOTIFY_ACK:
2668 case XPT_IMMEDIATE_NOTIFY:
2669 case XPT_NOTIFY_ACKNOWLEDGE:
2670 case XPT_GET_SIM_KNOB_OLD:
2671 case XPT_GET_SIM_KNOB:
2672 case XPT_SET_SIM_KNOB:
2673 case XPT_GET_TRAN_SETTINGS:
2674 case XPT_SET_TRAN_SETTINGS:
2677 sim = path->bus->sim;
2679 if (mtx && !mtx_owned(mtx))
2684 CAM_DEBUG(path, CAM_DEBUG_TRACE,
2685 ("Calling sim->sim_action(): func=%#x\n", start_ccb->ccb_h.func_code));
2686 (*(sim->sim_action))(sim, start_ccb);
2687 CAM_DEBUG(path, CAM_DEBUG_TRACE,
2688 ("sim->sim_action returned: status=%#x\n", start_ccb->ccb_h.status));
2692 case XPT_PATH_STATS:
2693 start_ccb->cpis.last_reset = path->bus->last_reset;
2694 start_ccb->ccb_h.status = CAM_REQ_CMP;
2701 if ((dev->flags & CAM_DEV_UNCONFIGURED) != 0) {
2702 start_ccb->ccb_h.status = CAM_DEV_NOT_THERE;
2704 struct ccb_getdev *cgd;
2706 cgd = &start_ccb->cgd;
2707 cgd->protocol = dev->protocol;
2708 cgd->inq_data = dev->inq_data;
2709 cgd->ident_data = dev->ident_data;
2710 cgd->inq_flags = dev->inq_flags;
2711 cgd->ccb_h.status = CAM_REQ_CMP;
2712 cgd->serial_num_len = dev->serial_num_len;
2713 if ((dev->serial_num_len > 0)
2714 && (dev->serial_num != NULL))
2715 bcopy(dev->serial_num, cgd->serial_num,
2716 dev->serial_num_len);
2720 case XPT_GDEV_STATS:
2722 struct ccb_getdevstats *cgds = &start_ccb->cgds;
2723 struct cam_ed *dev = path->device;
2724 struct cam_eb *bus = path->bus;
2725 struct cam_et *tar = path->target;
2726 struct cam_devq *devq = bus->sim->devq;
2728 mtx_lock(&devq->send_mtx);
2729 cgds->dev_openings = dev->ccbq.dev_openings;
2730 cgds->dev_active = dev->ccbq.dev_active;
2731 cgds->allocated = dev->ccbq.allocated;
2732 cgds->queued = cam_ccbq_pending_ccb_count(&dev->ccbq);
2733 cgds->held = cgds->allocated - cgds->dev_active - cgds->queued;
2734 cgds->last_reset = tar->last_reset;
2735 cgds->maxtags = dev->maxtags;
2736 cgds->mintags = dev->mintags;
2737 if (timevalcmp(&tar->last_reset, &bus->last_reset, <))
2738 cgds->last_reset = bus->last_reset;
2739 mtx_unlock(&devq->send_mtx);
2740 cgds->ccb_h.status = CAM_REQ_CMP;
2745 struct cam_periph *nperiph;
2746 struct periph_list *periph_head;
2747 struct ccb_getdevlist *cgdl;
2749 struct cam_ed *device;
2755 * Don't want anyone mucking with our data.
2757 device = path->device;
2758 periph_head = &device->periphs;
2759 cgdl = &start_ccb->cgdl;
2762 * Check and see if the list has changed since the user
2763 * last requested a list member. If so, tell them that the
2764 * list has changed, and therefore they need to start over
2765 * from the beginning.
2767 if ((cgdl->index != 0) &&
2768 (cgdl->generation != device->generation)) {
2769 cgdl->status = CAM_GDEVLIST_LIST_CHANGED;
2774 * Traverse the list of peripherals and attempt to find
2775 * the requested peripheral.
2777 for (nperiph = SLIST_FIRST(periph_head), i = 0;
2778 (nperiph != NULL) && (i <= cgdl->index);
2779 nperiph = SLIST_NEXT(nperiph, periph_links), i++) {
2780 if (i == cgdl->index) {
2781 strlcpy(cgdl->periph_name,
2782 nperiph->periph_name,
2783 sizeof(cgdl->periph_name));
2784 cgdl->unit_number = nperiph->unit_number;
2789 cgdl->status = CAM_GDEVLIST_ERROR;
2793 if (nperiph == NULL)
2794 cgdl->status = CAM_GDEVLIST_LAST_DEVICE;
2796 cgdl->status = CAM_GDEVLIST_MORE_DEVS;
2799 cgdl->generation = device->generation;
2801 cgdl->ccb_h.status = CAM_REQ_CMP;
2806 dev_pos_type position_type;
2807 struct ccb_dev_match *cdm;
2809 cdm = &start_ccb->cdm;
2812 * There are two ways of getting at information in the EDT.
2813 * The first way is via the primary EDT tree. It starts
2814 * with a list of buses, then a list of targets on a bus,
2815 * then devices/luns on a target, and then peripherals on a
2816 * device/lun. The "other" way is by the peripheral driver
2817 * lists. The peripheral driver lists are organized by
2818 * peripheral driver. (obviously) So it makes sense to
2819 * use the peripheral driver list if the user is looking
2820 * for something like "da1", or all "da" devices. If the
2821 * user is looking for something on a particular bus/target
2822 * or lun, it's generally better to go through the EDT tree.
2825 if (cdm->pos.position_type != CAM_DEV_POS_NONE)
2826 position_type = cdm->pos.position_type;
2830 position_type = CAM_DEV_POS_NONE;
2832 for (i = 0; i < cdm->num_patterns; i++) {
2833 if ((cdm->patterns[i].type == DEV_MATCH_BUS)
2834 ||(cdm->patterns[i].type == DEV_MATCH_DEVICE)){
2835 position_type = CAM_DEV_POS_EDT;
2840 if (cdm->num_patterns == 0)
2841 position_type = CAM_DEV_POS_EDT;
2842 else if (position_type == CAM_DEV_POS_NONE)
2843 position_type = CAM_DEV_POS_PDRV;
2846 switch(position_type & CAM_DEV_POS_TYPEMASK) {
2847 case CAM_DEV_POS_EDT:
2850 case CAM_DEV_POS_PDRV:
2851 xptperiphlistmatch(cdm);
2854 cdm->status = CAM_DEV_MATCH_ERROR;
2858 if (cdm->status == CAM_DEV_MATCH_ERROR)
2859 start_ccb->ccb_h.status = CAM_REQ_CMP_ERR;
2861 start_ccb->ccb_h.status = CAM_REQ_CMP;
2867 struct ccb_setasync *csa;
2868 struct async_node *cur_entry;
2869 struct async_list *async_head;
2872 csa = &start_ccb->csa;
2873 added = csa->event_enable;
2874 async_head = &path->device->asyncs;
2877 * If there is already an entry for us, simply
2880 cur_entry = SLIST_FIRST(async_head);
2881 while (cur_entry != NULL) {
2882 if ((cur_entry->callback_arg == csa->callback_arg)
2883 && (cur_entry->callback == csa->callback))
2885 cur_entry = SLIST_NEXT(cur_entry, links);
2888 if (cur_entry != NULL) {
2890 * If the request has no flags set,
2893 added &= ~cur_entry->event_enable;
2894 if (csa->event_enable == 0) {
2895 SLIST_REMOVE(async_head, cur_entry,
2897 xpt_release_device(path->device);
2898 free(cur_entry, M_CAMXPT);
2900 cur_entry->event_enable = csa->event_enable;
2902 csa->event_enable = added;
2904 cur_entry = malloc(sizeof(*cur_entry), M_CAMXPT,
2906 if (cur_entry == NULL) {
2907 csa->ccb_h.status = CAM_RESRC_UNAVAIL;
2910 cur_entry->event_enable = csa->event_enable;
2911 cur_entry->event_lock = (path->bus->sim->mtx &&
2912 mtx_owned(path->bus->sim->mtx)) ? 1 : 0;
2913 cur_entry->callback_arg = csa->callback_arg;
2914 cur_entry->callback = csa->callback;
2915 SLIST_INSERT_HEAD(async_head, cur_entry, links);
2916 xpt_acquire_device(path->device);
2918 start_ccb->ccb_h.status = CAM_REQ_CMP;
2923 struct ccb_relsim *crs;
2926 crs = &start_ccb->crs;
2929 crs->ccb_h.status = CAM_DEV_NOT_THERE;
2933 if ((crs->release_flags & RELSIM_ADJUST_OPENINGS) != 0) {
2934 /* Don't ever go below one opening */
2935 if (crs->openings > 0) {
2936 xpt_dev_ccbq_resize(path, crs->openings);
2939 "number of openings is now %d\n",
2945 mtx_lock(&dev->sim->devq->send_mtx);
2946 if ((crs->release_flags & RELSIM_RELEASE_AFTER_TIMEOUT) != 0) {
2947 if ((dev->flags & CAM_DEV_REL_TIMEOUT_PENDING) != 0) {
2949 * Just extend the old timeout and decrement
2950 * the freeze count so that a single timeout
2951 * is sufficient for releasing the queue.
2953 start_ccb->ccb_h.flags &= ~CAM_DEV_QFREEZE;
2954 callout_stop(&dev->callout);
2956 start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
2959 callout_reset_sbt(&dev->callout,
2960 SBT_1MS * crs->release_timeout, SBT_1MS,
2961 xpt_release_devq_timeout, dev, 0);
2963 dev->flags |= CAM_DEV_REL_TIMEOUT_PENDING;
2966 if ((crs->release_flags & RELSIM_RELEASE_AFTER_CMDCMPLT) != 0) {
2967 if ((dev->flags & CAM_DEV_REL_ON_COMPLETE) != 0) {
2969 * Decrement the freeze count so that a single
2970 * completion is still sufficient to unfreeze
2973 start_ccb->ccb_h.flags &= ~CAM_DEV_QFREEZE;
2975 dev->flags |= CAM_DEV_REL_ON_COMPLETE;
2976 start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
2980 if ((crs->release_flags & RELSIM_RELEASE_AFTER_QEMPTY) != 0) {
2981 if ((dev->flags & CAM_DEV_REL_ON_QUEUE_EMPTY) != 0
2982 || (dev->ccbq.dev_active == 0)) {
2983 start_ccb->ccb_h.flags &= ~CAM_DEV_QFREEZE;
2985 dev->flags |= CAM_DEV_REL_ON_QUEUE_EMPTY;
2986 start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
2989 mtx_unlock(&dev->sim->devq->send_mtx);
2991 if ((start_ccb->ccb_h.flags & CAM_DEV_QFREEZE) == 0)
2992 xpt_release_devq(path, /*count*/1, /*run_queue*/TRUE);
2993 start_ccb->crs.qfrozen_cnt = dev->ccbq.queue.qfrozen_cnt;
2994 start_ccb->ccb_h.status = CAM_REQ_CMP;
2998 struct cam_path *oldpath;
3000 /* Check that all request bits are supported. */
3001 if (start_ccb->cdbg.flags & ~(CAM_DEBUG_COMPILE)) {
3002 start_ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
3006 cam_dflags = CAM_DEBUG_NONE;
3007 if (cam_dpath != NULL) {
3008 oldpath = cam_dpath;
3010 xpt_free_path(oldpath);
3012 if (start_ccb->cdbg.flags != CAM_DEBUG_NONE) {
3013 if (xpt_create_path(&cam_dpath, NULL,
3014 start_ccb->ccb_h.path_id,
3015 start_ccb->ccb_h.target_id,
3016 start_ccb->ccb_h.target_lun) !=
3018 start_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
3020 cam_dflags = start_ccb->cdbg.flags;
3021 start_ccb->ccb_h.status = CAM_REQ_CMP;
3022 xpt_print(cam_dpath, "debugging flags now %x\n",
3026 start_ccb->ccb_h.status = CAM_REQ_CMP;
3030 if ((start_ccb->ccb_h.flags & CAM_DEV_QFREEZE) != 0)
3031 xpt_freeze_devq(path, 1);
3032 start_ccb->ccb_h.status = CAM_REQ_CMP;
3034 case XPT_REPROBE_LUN:
3035 xpt_async(AC_INQ_CHANGED, path, NULL);
3036 start_ccb->ccb_h.status = CAM_REQ_CMP;
3037 xpt_done(start_ccb);
3041 * Queue the async operation so it can be run from a sleepable
3044 start_ccb->ccb_h.status = CAM_REQ_CMP;
3045 mtx_lock(&cam_async.cam_doneq_mtx);
3046 STAILQ_INSERT_TAIL(&cam_async.cam_doneq, &start_ccb->ccb_h, sim_links.stqe);
3047 start_ccb->ccb_h.pinfo.index = CAM_ASYNC_INDEX;
3048 mtx_unlock(&cam_async.cam_doneq_mtx);
3049 wakeup(&cam_async.cam_doneq);
3056 xpt_print(start_ccb->ccb_h.path,
3057 "%s: CCB type %#x %s not supported\n", __func__,
3058 start_ccb->ccb_h.func_code,
3059 xpt_action_name(start_ccb->ccb_h.func_code));
3060 start_ccb->ccb_h.status = CAM_PROVIDE_FAIL;
3061 if (start_ccb->ccb_h.func_code & XPT_FC_DEV_QUEUED) {
3062 xpt_done(start_ccb);
3066 CAM_DEBUG(path, CAM_DEBUG_TRACE,
3067 ("xpt_action_default: func= %#x %s status %#x\n",
3068 start_ccb->ccb_h.func_code,
3069 xpt_action_name(start_ccb->ccb_h.func_code),
3070 start_ccb->ccb_h.status));
3074 * Call the sim poll routine to allow the sim to complete
3075 * any inflight requests, then call camisr_runqueue to
3076 * complete any CCB that the polling completed.
3079 xpt_sim_poll(struct cam_sim *sim)
3083 KASSERT(cam_sim_pollable(sim), ("%s: non-pollable sim", __func__));
3087 (*(sim->sim_poll))(sim);
3094 xpt_poll_setup(union ccb *start_ccb)
3097 struct cam_sim *sim;
3098 struct cam_devq *devq;
3101 timeout = start_ccb->ccb_h.timeout * 10;
3102 sim = start_ccb->ccb_h.path->bus->sim;
3104 dev = start_ccb->ccb_h.path->device;
3106 KASSERT(cam_sim_pollable(sim), ("%s: non-pollable sim", __func__));
3109 * Steal an opening so that no other queued requests
3110 * can get it before us while we simulate interrupts.
3112 mtx_lock(&devq->send_mtx);
3113 dev->ccbq.dev_openings--;
3114 while((devq->send_openings <= 0 || dev->ccbq.dev_openings < 0) &&
3116 mtx_unlock(&devq->send_mtx);
3119 mtx_lock(&devq->send_mtx);
3121 dev->ccbq.dev_openings++;
3122 mtx_unlock(&devq->send_mtx);
3128 xpt_pollwait(union ccb *start_ccb, uint32_t timeout)
3131 KASSERT(cam_sim_pollable(start_ccb->ccb_h.path->bus->sim),
3132 ("%s: non-pollable sim", __func__));
3133 while (--timeout > 0) {
3134 xpt_sim_poll(start_ccb->ccb_h.path->bus->sim);
3135 if ((start_ccb->ccb_h.status & CAM_STATUS_MASK)
3143 * XXX Is it worth adding a sim_timeout entry
3144 * point so we can attempt recovery? If
3145 * this is only used for dumps, I don't think
3148 start_ccb->ccb_h.status = CAM_CMD_TIMEOUT;
3153 * Schedule a peripheral driver to receive a ccb when its
3154 * target device has space for more transactions.
3157 xpt_schedule(struct cam_periph *periph, uint32_t new_priority)
3160 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("xpt_schedule\n"));
3161 cam_periph_assert(periph, MA_OWNED);
3162 if (new_priority < periph->scheduled_priority) {
3163 periph->scheduled_priority = new_priority;
3164 xpt_run_allocq(periph, 0);
3169 * Schedule a device to run on a given queue.
3170 * If the device was inserted as a new entry on the queue,
3171 * return 1 meaning the device queue should be run. If we
3172 * were already queued, implying someone else has already
3173 * started the queue, return 0 so the caller doesn't attempt
3177 xpt_schedule_dev(struct camq *queue, cam_pinfo *pinfo,
3178 uint32_t new_priority)
3181 uint32_t old_priority;
3183 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_schedule_dev\n"));
3185 old_priority = pinfo->priority;
3188 * Are we already queued?
3190 if (pinfo->index != CAM_UNQUEUED_INDEX) {
3191 /* Simply reorder based on new priority */
3192 if (new_priority < old_priority) {
3193 camq_change_priority(queue, pinfo->index,
3195 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3196 ("changed priority to %d\n",
3202 /* New entry on the queue */
3203 if (new_priority < old_priority)
3204 pinfo->priority = new_priority;
3206 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3207 ("Inserting onto queue\n"));
3208 pinfo->generation = ++queue->generation;
3209 camq_insert(queue, pinfo);
3216 xpt_run_allocq_task(void *context, int pending)
3218 struct cam_periph *periph = context;
3220 cam_periph_lock(periph);
3221 periph->flags &= ~CAM_PERIPH_RUN_TASK;
3222 xpt_run_allocq(periph, 1);
3223 cam_periph_unlock(periph);
3224 cam_periph_release(periph);
3228 xpt_run_allocq(struct cam_periph *periph, int sleep)
3230 struct cam_ed *device;
3234 cam_periph_assert(periph, MA_OWNED);
3235 if (periph->periph_allocating)
3237 cam_periph_doacquire(periph);
3238 periph->periph_allocating = 1;
3239 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_run_allocq(%p)\n", periph));
3240 device = periph->path->device;
3243 while ((prio = min(periph->scheduled_priority,
3244 periph->immediate_priority)) != CAM_PRIORITY_NONE &&
3245 (periph->periph_allocated - (ccb != NULL ? 1 : 0) <
3246 device->ccbq.total_openings || prio <= CAM_PRIORITY_OOB)) {
3248 (ccb = xpt_get_ccb_nowait(periph)) == NULL) {
3250 ccb = xpt_get_ccb(periph);
3253 if (periph->flags & CAM_PERIPH_RUN_TASK)
3255 cam_periph_doacquire(periph);
3256 periph->flags |= CAM_PERIPH_RUN_TASK;
3257 taskqueue_enqueue(xsoftc.xpt_taskq,
3258 &periph->periph_run_task);
3261 xpt_setup_ccb(&ccb->ccb_h, periph->path, prio);
3262 if (prio == periph->immediate_priority) {
3263 periph->immediate_priority = CAM_PRIORITY_NONE;
3264 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3265 ("waking cam_periph_getccb()\n"));
3266 SLIST_INSERT_HEAD(&periph->ccb_list, &ccb->ccb_h,
3268 wakeup(&periph->ccb_list);
3270 periph->scheduled_priority = CAM_PRIORITY_NONE;
3271 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3272 ("calling periph_start()\n"));
3273 periph->periph_start(periph, ccb);
3278 xpt_release_ccb(ccb);
3279 periph->periph_allocating = 0;
3280 cam_periph_release_locked(periph);
3284 xpt_run_devq(struct cam_devq *devq)
3288 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_run_devq\n"));
3290 devq->send_queue.qfrozen_cnt++;
3291 while ((devq->send_queue.entries > 0)
3292 && (devq->send_openings > 0)
3293 && (devq->send_queue.qfrozen_cnt <= 1)) {
3294 struct cam_ed *device;
3295 union ccb *work_ccb;
3296 struct cam_sim *sim;
3297 struct xpt_proto *proto;
3299 device = (struct cam_ed *)camq_remove(&devq->send_queue,
3301 CAM_DEBUG_PRINT(CAM_DEBUG_XPT,
3302 ("running device %p\n", device));
3304 work_ccb = cam_ccbq_peek_ccb(&device->ccbq, CAMQ_HEAD);
3305 if (work_ccb == NULL) {
3306 printf("device on run queue with no ccbs???\n");
3310 if ((work_ccb->ccb_h.flags & CAM_HIGH_POWER) != 0) {
3311 mtx_lock(&xsoftc.xpt_highpower_lock);
3312 if (xsoftc.num_highpower <= 0) {
3314 * We got a high power command, but we
3315 * don't have any available slots. Freeze
3316 * the device queue until we have a slot
3319 xpt_freeze_devq_device(device, 1);
3320 STAILQ_INSERT_TAIL(&xsoftc.highpowerq, device,
3323 mtx_unlock(&xsoftc.xpt_highpower_lock);
3327 * Consume a high power slot while
3330 xsoftc.num_highpower--;
3332 mtx_unlock(&xsoftc.xpt_highpower_lock);
3334 cam_ccbq_remove_ccb(&device->ccbq, work_ccb);
3335 cam_ccbq_send_ccb(&device->ccbq, work_ccb);
3336 devq->send_openings--;
3337 devq->send_active++;
3338 xpt_schedule_devq(devq, device);
3339 mtx_unlock(&devq->send_mtx);
3341 if ((work_ccb->ccb_h.flags & CAM_DEV_QFREEZE) != 0) {
3343 * The client wants to freeze the queue
3344 * after this CCB is sent.
3346 xpt_freeze_devq(work_ccb->ccb_h.path, 1);
3349 /* In Target mode, the peripheral driver knows best... */
3350 if (work_ccb->ccb_h.func_code == XPT_SCSI_IO) {
3351 if ((device->inq_flags & SID_CmdQue) != 0
3352 && work_ccb->csio.tag_action != CAM_TAG_ACTION_NONE)
3353 work_ccb->ccb_h.flags |= CAM_TAG_ACTION_VALID;
3356 * Clear this in case of a retried CCB that
3357 * failed due to a rejected tag.
3359 work_ccb->ccb_h.flags &= ~CAM_TAG_ACTION_VALID;
3362 KASSERT(device == work_ccb->ccb_h.path->device,
3363 ("device (%p) / path->device (%p) mismatch",
3364 device, work_ccb->ccb_h.path->device));
3365 proto = xpt_proto_find(device->protocol);
3366 if (proto && proto->ops->debug_out)
3367 proto->ops->debug_out(work_ccb);
3370 * Device queues can be shared among multiple SIM instances
3371 * that reside on different buses. Use the SIM from the
3372 * queued device, rather than the one from the calling bus.
3376 if (mtx && !mtx_owned(mtx))
3380 work_ccb->ccb_h.qos.periph_data = cam_iosched_now();
3381 (*(sim->sim_action))(sim, work_ccb);
3384 mtx_lock(&devq->send_mtx);
3386 devq->send_queue.qfrozen_cnt--;
3390 * This function merges stuff from the src ccb into the dst ccb, while keeping
3391 * important fields in the dst ccb constant.
3394 xpt_merge_ccb(union ccb *dst_ccb, union ccb *src_ccb)
3398 * Pull fields that are valid for peripheral drivers to set
3399 * into the dst CCB along with the CCB "payload".
3401 dst_ccb->ccb_h.retry_count = src_ccb->ccb_h.retry_count;
3402 dst_ccb->ccb_h.func_code = src_ccb->ccb_h.func_code;
3403 dst_ccb->ccb_h.timeout = src_ccb->ccb_h.timeout;
3404 dst_ccb->ccb_h.flags = src_ccb->ccb_h.flags;
3405 bcopy(&(&src_ccb->ccb_h)[1], &(&dst_ccb->ccb_h)[1],
3406 sizeof(union ccb) - sizeof(struct ccb_hdr));
3410 xpt_setup_ccb_flags(struct ccb_hdr *ccb_h, struct cam_path *path,
3411 uint32_t priority, uint32_t flags)
3414 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_setup_ccb\n"));
3415 ccb_h->pinfo.priority = priority;
3417 ccb_h->path_id = path->bus->path_id;
3419 ccb_h->target_id = path->target->target_id;
3421 ccb_h->target_id = CAM_TARGET_WILDCARD;
3423 ccb_h->target_lun = path->device->lun_id;
3424 ccb_h->pinfo.generation = ++path->device->ccbq.queue.generation;
3426 ccb_h->target_lun = CAM_TARGET_WILDCARD;
3428 ccb_h->pinfo.index = CAM_UNQUEUED_INDEX;
3429 ccb_h->flags = flags;
3434 xpt_setup_ccb(struct ccb_hdr *ccb_h, struct cam_path *path, uint32_t priority)
3436 xpt_setup_ccb_flags(ccb_h, path, priority, /*flags*/ 0);
3439 /* Path manipulation functions */
3441 xpt_create_path(struct cam_path **new_path_ptr, struct cam_periph *perph,
3442 path_id_t path_id, target_id_t target_id, lun_id_t lun_id)
3444 struct cam_path *path;
3447 path = (struct cam_path *)malloc(sizeof(*path), M_CAMPATH, M_NOWAIT);
3450 status = CAM_RESRC_UNAVAIL;
3453 status = xpt_compile_path(path, perph, path_id, target_id, lun_id);
3454 if (status != CAM_REQ_CMP) {
3455 free(path, M_CAMPATH);
3458 *new_path_ptr = path;
3463 xpt_create_path_unlocked(struct cam_path **new_path_ptr,
3464 struct cam_periph *periph, path_id_t path_id,
3465 target_id_t target_id, lun_id_t lun_id)
3468 return (xpt_create_path(new_path_ptr, periph, path_id, target_id,
3473 xpt_compile_path(struct cam_path *new_path, struct cam_periph *perph,
3474 path_id_t path_id, target_id_t target_id, lun_id_t lun_id)
3477 struct cam_et *target;
3478 struct cam_ed *device;
3481 status = CAM_REQ_CMP; /* Completed without error */
3482 target = NULL; /* Wildcarded */
3483 device = NULL; /* Wildcarded */
3486 * We will potentially modify the EDT, so block interrupts
3487 * that may attempt to create cam paths.
3489 bus = xpt_find_bus(path_id);
3491 status = CAM_PATH_INVALID;
3494 mtx_lock(&bus->eb_mtx);
3495 target = xpt_find_target(bus, target_id);
3496 if (target == NULL) {
3498 struct cam_et *new_target;
3500 new_target = xpt_alloc_target(bus, target_id);
3501 if (new_target == NULL) {
3502 status = CAM_RESRC_UNAVAIL;
3504 target = new_target;
3508 if (target != NULL) {
3509 device = xpt_find_device(target, lun_id);
3510 if (device == NULL) {
3512 struct cam_ed *new_device;
3515 (*(bus->xport->ops->alloc_device))(bus,
3518 if (new_device == NULL) {
3519 status = CAM_RESRC_UNAVAIL;
3521 device = new_device;
3525 mtx_unlock(&bus->eb_mtx);
3529 * Only touch the user's data if we are successful.
3531 if (status == CAM_REQ_CMP) {
3532 new_path->periph = perph;
3533 new_path->bus = bus;
3534 new_path->target = target;
3535 new_path->device = device;
3536 CAM_DEBUG(new_path, CAM_DEBUG_TRACE, ("xpt_compile_path\n"));
3539 xpt_release_device(device);
3541 xpt_release_target(target);
3543 xpt_release_bus(bus);
3549 xpt_clone_path(struct cam_path **new_path_ptr, struct cam_path *path)
3551 struct cam_path *new_path;
3553 new_path = (struct cam_path *)malloc(sizeof(*path), M_CAMPATH, M_NOWAIT);
3554 if (new_path == NULL)
3557 if (path->bus != NULL)
3558 xpt_acquire_bus(path->bus);
3559 if (path->target != NULL)
3560 xpt_acquire_target(path->target);
3561 if (path->device != NULL)
3562 xpt_acquire_device(path->device);
3563 *new_path_ptr = new_path;
3568 xpt_release_path(struct cam_path *path)
3570 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_release_path\n"));
3571 if (path->device != NULL) {
3572 xpt_release_device(path->device);
3573 path->device = NULL;
3575 if (path->target != NULL) {
3576 xpt_release_target(path->target);
3577 path->target = NULL;
3579 if (path->bus != NULL) {
3580 xpt_release_bus(path->bus);
3586 xpt_free_path(struct cam_path *path)
3589 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_free_path\n"));
3590 xpt_release_path(path);
3591 free(path, M_CAMPATH);
3595 xpt_path_counts(struct cam_path *path, uint32_t *bus_ref,
3596 uint32_t *periph_ref, uint32_t *target_ref, uint32_t *device_ref)
3602 *bus_ref = path->bus->refcount;
3608 *periph_ref = path->periph->refcount;
3615 *target_ref = path->target->refcount;
3621 *device_ref = path->device->refcount;
3628 * Return -1 for failure, 0 for exact match, 1 for match with wildcards
3629 * in path1, 2 for match with wildcards in path2.
3632 xpt_path_comp(struct cam_path *path1, struct cam_path *path2)
3636 if (path1->bus != path2->bus) {
3637 if (path1->bus->path_id == CAM_BUS_WILDCARD)
3639 else if (path2->bus->path_id == CAM_BUS_WILDCARD)
3644 if (path1->target != path2->target) {
3645 if (path1->target->target_id == CAM_TARGET_WILDCARD) {
3648 } else if (path2->target->target_id == CAM_TARGET_WILDCARD)
3653 if (path1->device != path2->device) {
3654 if (path1->device->lun_id == CAM_LUN_WILDCARD) {
3657 } else if (path2->device->lun_id == CAM_LUN_WILDCARD)
3666 xpt_path_comp_dev(struct cam_path *path, struct cam_ed *dev)
3670 if (path->bus != dev->target->bus) {
3671 if (path->bus->path_id == CAM_BUS_WILDCARD)
3673 else if (dev->target->bus->path_id == CAM_BUS_WILDCARD)
3678 if (path->target != dev->target) {
3679 if (path->target->target_id == CAM_TARGET_WILDCARD) {
3682 } else if (dev->target->target_id == CAM_TARGET_WILDCARD)
3687 if (path->device != dev) {
3688 if (path->device->lun_id == CAM_LUN_WILDCARD) {
3691 } else if (dev->lun_id == CAM_LUN_WILDCARD)
3700 xpt_print_path(struct cam_path *path)
3703 char buffer[XPT_PRINT_LEN];
3705 sbuf_new(&sb, buffer, XPT_PRINT_LEN, SBUF_FIXEDLEN);
3706 xpt_path_sbuf(path, &sb);
3708 printf("%s", sbuf_data(&sb));
3713 xpt_device_sbuf(struct cam_ed *device, struct sbuf *sb)
3716 sbuf_printf(sb, "(nopath): ");
3718 sbuf_printf(sb, "(noperiph:%s%d:%d:%d:%jx): ",
3719 device->sim->sim_name,
3720 device->sim->unit_number,
3721 device->sim->bus_id,
3722 device->target->target_id,
3723 (uintmax_t)device->lun_id);
3728 xpt_print(struct cam_path *path, const char *fmt, ...)
3732 char buffer[XPT_PRINT_LEN];
3734 sbuf_new(&sb, buffer, XPT_PRINT_LEN, SBUF_FIXEDLEN);
3736 xpt_path_sbuf(path, &sb);
3738 sbuf_vprintf(&sb, fmt, ap);
3742 printf("%s", sbuf_data(&sb));
3747 xpt_path_string(struct cam_path *path, char *str, size_t str_len)
3752 sbuf_new(&sb, str, str_len, 0);
3753 len = xpt_path_sbuf(path, &sb);
3759 xpt_path_sbuf(struct cam_path *path, struct sbuf *sb)
3763 sbuf_printf(sb, "(nopath): ");
3765 if (path->periph != NULL)
3766 sbuf_printf(sb, "(%s%d:", path->periph->periph_name,
3767 path->periph->unit_number);
3769 sbuf_printf(sb, "(noperiph:");
3771 if (path->bus != NULL)
3772 sbuf_printf(sb, "%s%d:%d:", path->bus->sim->sim_name,
3773 path->bus->sim->unit_number,
3774 path->bus->sim->bus_id);
3776 sbuf_printf(sb, "nobus:");
3778 if (path->target != NULL)
3779 sbuf_printf(sb, "%d:", path->target->target_id);
3781 sbuf_printf(sb, "X:");
3783 if (path->device != NULL)
3784 sbuf_printf(sb, "%jx): ",
3785 (uintmax_t)path->device->lun_id);
3787 sbuf_printf(sb, "X): ");
3790 return(sbuf_len(sb));
3794 xpt_path_path_id(struct cam_path *path)
3796 return(path->bus->path_id);
3800 xpt_path_target_id(struct cam_path *path)
3802 if (path->target != NULL)
3803 return (path->target->target_id);
3805 return (CAM_TARGET_WILDCARD);
3809 xpt_path_lun_id(struct cam_path *path)
3811 if (path->device != NULL)
3812 return (path->device->lun_id);
3814 return (CAM_LUN_WILDCARD);
3818 xpt_path_sim(struct cam_path *path)
3821 return (path->bus->sim);
3825 xpt_path_periph(struct cam_path *path)
3828 return (path->periph);
3832 * Release a CAM control block for the caller. Remit the cost of the structure
3833 * to the device referenced by the path. If the this device had no 'credits'
3834 * and peripheral drivers have registered async callbacks for this notification
3838 xpt_release_ccb(union ccb *free_ccb)
3840 struct cam_ed *device;
3841 struct cam_periph *periph;
3843 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_release_ccb\n"));
3844 xpt_path_assert(free_ccb->ccb_h.path, MA_OWNED);
3845 device = free_ccb->ccb_h.path->device;
3846 periph = free_ccb->ccb_h.path->periph;
3848 xpt_free_ccb(free_ccb);
3849 periph->periph_allocated--;
3850 cam_ccbq_release_opening(&device->ccbq);
3851 xpt_run_allocq(periph, 0);
3854 /* Functions accessed by SIM drivers */
3856 static struct xpt_xport_ops xport_default_ops = {
3857 .alloc_device = xpt_alloc_device_default,
3858 .action = xpt_action_default,
3859 .async = xpt_dev_async_default,
3861 static struct xpt_xport xport_default = {
3862 .xport = XPORT_UNKNOWN,
3864 .ops = &xport_default_ops,
3867 CAM_XPT_XPORT(xport_default);
3870 * A sim structure, listing the SIM entry points and instance
3871 * identification info is passed to xpt_bus_register to hook the SIM
3872 * into the CAM framework. xpt_bus_register creates a cam_eb entry
3873 * for this new bus and places it in the array of buses and assigns
3874 * it a path_id. The path_id may be influenced by "hard wiring"
3875 * information specified by the user. Once interrupt services are
3876 * available, the bus will be probed.
3879 xpt_bus_register(struct cam_sim *sim, device_t parent, uint32_t bus)
3881 struct cam_eb *new_bus;
3882 struct cam_eb *old_bus;
3883 struct ccb_pathinq cpi;
3884 struct cam_path *path;
3888 new_bus = (struct cam_eb *)malloc(sizeof(*new_bus),
3889 M_CAMXPT, M_NOWAIT|M_ZERO);
3890 if (new_bus == NULL) {
3891 /* Couldn't satisfy request */
3895 mtx_init(&new_bus->eb_mtx, "CAM bus lock", NULL, MTX_DEF);
3896 TAILQ_INIT(&new_bus->et_entries);
3899 timevalclear(&new_bus->last_reset);
3901 new_bus->refcount = 1; /* Held until a bus_deregister event */
3902 new_bus->generation = 0;
3903 new_bus->parent_dev = parent;
3906 sim->path_id = new_bus->path_id =
3907 xptpathid(sim->sim_name, sim->unit_number, sim->bus_id);
3908 old_bus = TAILQ_FIRST(&xsoftc.xpt_busses);
3909 while (old_bus != NULL
3910 && old_bus->path_id < new_bus->path_id)
3911 old_bus = TAILQ_NEXT(old_bus, links);
3912 if (old_bus != NULL)
3913 TAILQ_INSERT_BEFORE(old_bus, new_bus, links);
3915 TAILQ_INSERT_TAIL(&xsoftc.xpt_busses, new_bus, links);
3916 xsoftc.bus_generation++;
3920 * Set a default transport so that a PATH_INQ can be issued to
3921 * the SIM. This will then allow for probing and attaching of
3922 * a more appropriate transport.
3924 new_bus->xport = &xport_default;
3926 status = xpt_create_path(&path, /*periph*/NULL, sim->path_id,
3927 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
3928 if (status != CAM_REQ_CMP) {
3929 xpt_release_bus(new_bus);
3933 xpt_path_inq(&cpi, path);
3936 * Use the results of PATH_INQ to pick a transport. Note that
3937 * the xpt bus (which uses XPORT_UNSPECIFIED) always uses
3938 * xport_default instead of a transport from
3941 if (cam_ccb_success((union ccb *)&cpi) &&
3942 cpi.transport != XPORT_UNSPECIFIED) {
3943 struct xpt_xport **xpt;
3945 SET_FOREACH(xpt, cam_xpt_xport_set) {
3946 if ((*xpt)->xport == cpi.transport) {
3947 new_bus->xport = *xpt;
3951 if (new_bus->xport == &xport_default) {
3953 "No transport found for %d\n", cpi.transport);
3954 xpt_release_bus(new_bus);
3955 xpt_free_path(path);
3960 /* Notify interested parties */
3961 if (sim->path_id != CAM_XPT_PATH_ID) {
3962 xpt_async(AC_PATH_REGISTERED, path, &cpi);
3963 if ((cpi.hba_misc & PIM_NOSCAN) == 0) {
3964 union ccb *scan_ccb;
3966 /* Initiate bus rescan. */
3967 scan_ccb = xpt_alloc_ccb_nowait();
3968 if (scan_ccb != NULL) {
3969 scan_ccb->ccb_h.path = path;
3970 scan_ccb->ccb_h.func_code = XPT_SCAN_BUS;
3971 scan_ccb->crcn.flags = 0;
3972 xpt_rescan(scan_ccb);
3975 "Can't allocate CCB to scan bus\n");
3976 xpt_free_path(path);
3979 xpt_free_path(path);
3981 xpt_free_path(path);
3982 return (CAM_SUCCESS);
3986 xpt_bus_deregister(path_id_t pathid)
3988 struct cam_path bus_path;
3991 status = xpt_compile_path(&bus_path, NULL, pathid,
3992 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
3993 if (status != CAM_REQ_CMP)
3996 xpt_async(AC_LOST_DEVICE, &bus_path, NULL);
3997 xpt_async(AC_PATH_DEREGISTERED, &bus_path, NULL);
3999 /* Release the reference count held while registered. */
4000 xpt_release_bus(bus_path.bus);
4001 xpt_release_path(&bus_path);
4003 return (CAM_SUCCESS);
4007 xptnextfreepathid(void)
4013 mtx_assert(&xsoftc.xpt_topo_lock, MA_OWNED);
4015 bus = TAILQ_FIRST(&xsoftc.xpt_busses);
4017 /* Find an unoccupied pathid */
4018 while (bus != NULL && bus->path_id <= pathid) {
4019 if (bus->path_id == pathid)
4021 bus = TAILQ_NEXT(bus, links);
4025 * Ensure that this pathid is not reserved for
4026 * a bus that may be registered in the future.
4028 if (resource_string_value("scbus", pathid, "at", &strval) == 0) {
4030 /* Start the search over */
4037 xptpathid(const char *sim_name, int sim_unit, int sim_bus)
4044 pathid = CAM_XPT_PATH_ID;
4045 snprintf(buf, sizeof(buf), "%s%d", sim_name, sim_unit);
4046 if (strcmp(buf, "xpt0") == 0 && sim_bus == 0)
4049 while ((resource_find_match(&i, &dname, &dunit, "at", buf)) == 0) {
4050 if (strcmp(dname, "scbus")) {
4051 /* Avoid a bit of foot shooting. */
4054 if (dunit < 0) /* unwired?! */
4056 if (resource_int_value("scbus", dunit, "bus", &val) == 0) {
4057 if (sim_bus == val) {
4061 } else if (sim_bus == 0) {
4062 /* Unspecified matches bus 0 */
4066 printf("Ambiguous scbus configuration for %s%d "
4067 "bus %d, cannot wire down. The kernel "
4068 "config entry for scbus%d should "
4069 "specify a controller bus.\n"
4070 "Scbus will be assigned dynamically.\n",
4071 sim_name, sim_unit, sim_bus, dunit);
4076 if (pathid == CAM_XPT_PATH_ID)
4077 pathid = xptnextfreepathid();
4082 xpt_async_string(uint32_t async_code)
4085 switch (async_code) {
4086 case AC_BUS_RESET: return ("AC_BUS_RESET");
4087 case AC_UNSOL_RESEL: return ("AC_UNSOL_RESEL");
4088 case AC_SCSI_AEN: return ("AC_SCSI_AEN");
4089 case AC_SENT_BDR: return ("AC_SENT_BDR");
4090 case AC_PATH_REGISTERED: return ("AC_PATH_REGISTERED");
4091 case AC_PATH_DEREGISTERED: return ("AC_PATH_DEREGISTERED");
4092 case AC_FOUND_DEVICE: return ("AC_FOUND_DEVICE");
4093 case AC_LOST_DEVICE: return ("AC_LOST_DEVICE");
4094 case AC_TRANSFER_NEG: return ("AC_TRANSFER_NEG");
4095 case AC_INQ_CHANGED: return ("AC_INQ_CHANGED");
4096 case AC_GETDEV_CHANGED: return ("AC_GETDEV_CHANGED");
4097 case AC_CONTRACT: return ("AC_CONTRACT");
4098 case AC_ADVINFO_CHANGED: return ("AC_ADVINFO_CHANGED");
4099 case AC_UNIT_ATTENTION: return ("AC_UNIT_ATTENTION");
4101 return ("AC_UNKNOWN");
4105 xpt_async_size(uint32_t async_code)
4108 switch (async_code) {
4109 case AC_BUS_RESET: return (0);
4110 case AC_UNSOL_RESEL: return (0);
4111 case AC_SCSI_AEN: return (0);
4112 case AC_SENT_BDR: return (0);
4113 case AC_PATH_REGISTERED: return (sizeof(struct ccb_pathinq));
4114 case AC_PATH_DEREGISTERED: return (0);
4115 case AC_FOUND_DEVICE: return (sizeof(struct ccb_getdev));
4116 case AC_LOST_DEVICE: return (0);
4117 case AC_TRANSFER_NEG: return (sizeof(struct ccb_trans_settings));
4118 case AC_INQ_CHANGED: return (0);
4119 case AC_GETDEV_CHANGED: return (0);
4120 case AC_CONTRACT: return (sizeof(struct ac_contract));
4121 case AC_ADVINFO_CHANGED: return (-1);
4122 case AC_UNIT_ATTENTION: return (sizeof(struct ccb_scsiio));
4128 xpt_async_process_dev(struct cam_ed *device, void *arg)
4130 union ccb *ccb = arg;
4131 struct cam_path *path = ccb->ccb_h.path;
4132 void *async_arg = ccb->casync.async_arg_ptr;
4133 uint32_t async_code = ccb->casync.async_code;
4136 if (path->device != device
4137 && path->device->lun_id != CAM_LUN_WILDCARD
4138 && device->lun_id != CAM_LUN_WILDCARD)
4142 * The async callback could free the device.
4143 * If it is a broadcast async, it doesn't hold
4144 * device reference, so take our own reference.
4146 xpt_acquire_device(device);
4149 * If async for specific device is to be delivered to
4150 * the wildcard client, take the specific device lock.
4151 * XXX: We may need a way for client to specify it.
4153 if ((device->lun_id == CAM_LUN_WILDCARD &&
4154 path->device->lun_id != CAM_LUN_WILDCARD) ||
4155 (device->target->target_id == CAM_TARGET_WILDCARD &&
4156 path->target->target_id != CAM_TARGET_WILDCARD) ||
4157 (device->target->bus->path_id == CAM_BUS_WILDCARD &&
4158 path->target->bus->path_id != CAM_BUS_WILDCARD)) {
4159 mtx_unlock(&device->device_mtx);
4160 xpt_path_lock(path);
4165 (*(device->target->bus->xport->ops->async))(async_code,
4166 device->target->bus, device->target, device, async_arg);
4167 xpt_async_bcast(&device->asyncs, async_code, path, async_arg);
4170 xpt_path_unlock(path);
4171 mtx_lock(&device->device_mtx);
4173 xpt_release_device(device);
4178 xpt_async_process_tgt(struct cam_et *target, void *arg)
4180 union ccb *ccb = arg;
4181 struct cam_path *path = ccb->ccb_h.path;
4183 if (path->target != target
4184 && path->target->target_id != CAM_TARGET_WILDCARD
4185 && target->target_id != CAM_TARGET_WILDCARD)
4188 if (ccb->casync.async_code == AC_SENT_BDR) {
4189 /* Update our notion of when the last reset occurred */
4190 microtime(&target->last_reset);
4193 return (xptdevicetraverse(target, NULL, xpt_async_process_dev, ccb));
4197 xpt_async_process(struct cam_periph *periph, union ccb *ccb)
4200 struct cam_path *path;
4202 uint32_t async_code;
4204 path = ccb->ccb_h.path;
4205 async_code = ccb->casync.async_code;
4206 async_arg = ccb->casync.async_arg_ptr;
4207 CAM_DEBUG(path, CAM_DEBUG_TRACE | CAM_DEBUG_INFO,
4208 ("xpt_async(%s)\n", xpt_async_string(async_code)));
4211 if (async_code == AC_BUS_RESET) {
4212 /* Update our notion of when the last reset occurred */
4213 microtime(&bus->last_reset);
4216 xpttargettraverse(bus, NULL, xpt_async_process_tgt, ccb);
4219 * If this wasn't a fully wildcarded async, tell all
4220 * clients that want all async events.
4222 if (bus != xpt_periph->path->bus) {
4223 xpt_path_lock(xpt_periph->path);
4224 xpt_async_process_dev(xpt_periph->path->device, ccb);
4225 xpt_path_unlock(xpt_periph->path);
4228 if (path->device != NULL && path->device->lun_id != CAM_LUN_WILDCARD)
4229 xpt_release_devq(path, 1, TRUE);
4231 xpt_release_simq(path->bus->sim, TRUE);
4232 if (ccb->casync.async_arg_size > 0)
4233 free(async_arg, M_CAMXPT);
4234 xpt_free_path(path);
4239 xpt_async_bcast(struct async_list *async_head,
4240 uint32_t async_code,
4241 struct cam_path *path, void *async_arg)
4243 struct async_node *cur_entry;
4246 cur_entry = SLIST_FIRST(async_head);
4247 while (cur_entry != NULL) {
4248 struct async_node *next_entry;
4250 * Grab the next list entry before we call the current
4251 * entry's callback. This is because the callback function
4252 * can delete its async callback entry.
4254 next_entry = SLIST_NEXT(cur_entry, links);
4255 if ((cur_entry->event_enable & async_code) != 0) {
4256 mtx = cur_entry->event_lock ?
4257 path->device->sim->mtx : NULL;
4260 cur_entry->callback(cur_entry->callback_arg,
4266 cur_entry = next_entry;
4271 xpt_async(uint32_t async_code, struct cam_path *path, void *async_arg)
4276 ccb = xpt_alloc_ccb_nowait();
4278 xpt_print(path, "Can't allocate CCB to send %s\n",
4279 xpt_async_string(async_code));
4283 if (xpt_clone_path(&ccb->ccb_h.path, path) != 0) {
4284 xpt_print(path, "Can't allocate path to send %s\n",
4285 xpt_async_string(async_code));
4289 ccb->ccb_h.path->periph = NULL;
4290 ccb->ccb_h.func_code = XPT_ASYNC;
4291 ccb->ccb_h.cbfcnp = xpt_async_process;
4292 ccb->ccb_h.flags |= CAM_UNLOCKED;
4293 ccb->casync.async_code = async_code;
4294 ccb->casync.async_arg_size = 0;
4295 size = xpt_async_size(async_code);
4296 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE,
4297 ("xpt_async: func %#x %s aync_code %d %s\n",
4298 ccb->ccb_h.func_code,
4299 xpt_action_name(ccb->ccb_h.func_code),
4301 xpt_async_string(async_code)));
4302 if (size > 0 && async_arg != NULL) {
4303 ccb->casync.async_arg_ptr = malloc(size, M_CAMXPT, M_NOWAIT);
4304 if (ccb->casync.async_arg_ptr == NULL) {
4305 xpt_print(path, "Can't allocate argument to send %s\n",
4306 xpt_async_string(async_code));
4307 xpt_free_path(ccb->ccb_h.path);
4311 memcpy(ccb->casync.async_arg_ptr, async_arg, size);
4312 ccb->casync.async_arg_size = size;
4313 } else if (size < 0) {
4314 ccb->casync.async_arg_ptr = async_arg;
4315 ccb->casync.async_arg_size = size;
4317 if (path->device != NULL && path->device->lun_id != CAM_LUN_WILDCARD)
4318 xpt_freeze_devq(path, 1);
4320 xpt_freeze_simq(path->bus->sim, 1);
4325 xpt_dev_async_default(uint32_t async_code, struct cam_eb *bus,
4326 struct cam_et *target, struct cam_ed *device,
4331 * We only need to handle events for real devices.
4333 if (target->target_id == CAM_TARGET_WILDCARD
4334 || device->lun_id == CAM_LUN_WILDCARD)
4337 printf("%s called\n", __func__);
4341 xpt_freeze_devq_device(struct cam_ed *dev, u_int count)
4343 struct cam_devq *devq;
4346 devq = dev->sim->devq;
4347 mtx_assert(&devq->send_mtx, MA_OWNED);
4348 CAM_DEBUG_DEV(dev, CAM_DEBUG_TRACE,
4349 ("xpt_freeze_devq_device(%d) %u->%u\n", count,
4350 dev->ccbq.queue.qfrozen_cnt, dev->ccbq.queue.qfrozen_cnt + count));
4351 freeze = (dev->ccbq.queue.qfrozen_cnt += count);
4352 /* Remove frozen device from sendq. */
4353 if (device_is_queued(dev))
4354 camq_remove(&devq->send_queue, dev->devq_entry.index);
4359 xpt_freeze_devq(struct cam_path *path, u_int count)
4361 struct cam_ed *dev = path->device;
4362 struct cam_devq *devq;
4365 devq = dev->sim->devq;
4366 mtx_lock(&devq->send_mtx);
4367 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_freeze_devq(%d)\n", count));
4368 freeze = xpt_freeze_devq_device(dev, count);
4369 mtx_unlock(&devq->send_mtx);
4374 xpt_freeze_simq(struct cam_sim *sim, u_int count)
4376 struct cam_devq *devq;
4380 mtx_lock(&devq->send_mtx);
4381 freeze = (devq->send_queue.qfrozen_cnt += count);
4382 mtx_unlock(&devq->send_mtx);
4387 xpt_release_devq_timeout(void *arg)
4390 struct cam_devq *devq;
4392 dev = (struct cam_ed *)arg;
4393 CAM_DEBUG_DEV(dev, CAM_DEBUG_TRACE, ("xpt_release_devq_timeout\n"));
4394 devq = dev->sim->devq;
4395 mtx_assert(&devq->send_mtx, MA_OWNED);
4396 if (xpt_release_devq_device(dev, /*count*/1, /*run_queue*/TRUE))
4401 xpt_release_devq(struct cam_path *path, u_int count, int run_queue)
4404 struct cam_devq *devq;
4406 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_release_devq(%d, %d)\n",
4409 devq = dev->sim->devq;
4410 mtx_lock(&devq->send_mtx);
4411 if (xpt_release_devq_device(dev, count, run_queue))
4412 xpt_run_devq(dev->sim->devq);
4413 mtx_unlock(&devq->send_mtx);
4417 xpt_release_devq_device(struct cam_ed *dev, u_int count, int run_queue)
4420 mtx_assert(&dev->sim->devq->send_mtx, MA_OWNED);
4421 CAM_DEBUG_DEV(dev, CAM_DEBUG_TRACE,
4422 ("xpt_release_devq_device(%d, %d) %u->%u\n", count, run_queue,
4423 dev->ccbq.queue.qfrozen_cnt, dev->ccbq.queue.qfrozen_cnt - count));
4424 if (count > dev->ccbq.queue.qfrozen_cnt) {
4426 printf("xpt_release_devq(): requested %u > present %u\n",
4427 count, dev->ccbq.queue.qfrozen_cnt);
4429 count = dev->ccbq.queue.qfrozen_cnt;
4431 dev->ccbq.queue.qfrozen_cnt -= count;
4432 if (dev->ccbq.queue.qfrozen_cnt == 0) {
4434 * No longer need to wait for a successful
4435 * command completion.
4437 dev->flags &= ~CAM_DEV_REL_ON_COMPLETE;
4439 * Remove any timeouts that might be scheduled
4440 * to release this queue.
4442 if ((dev->flags & CAM_DEV_REL_TIMEOUT_PENDING) != 0) {
4443 callout_stop(&dev->callout);
4444 dev->flags &= ~CAM_DEV_REL_TIMEOUT_PENDING;
4447 * Now that we are unfrozen schedule the
4448 * device so any pending transactions are
4451 xpt_schedule_devq(dev->sim->devq, dev);
4458 xpt_release_simq(struct cam_sim *sim, int run_queue)
4460 struct cam_devq *devq;
4463 mtx_lock(&devq->send_mtx);
4464 if (devq->send_queue.qfrozen_cnt <= 0) {
4466 printf("xpt_release_simq: requested 1 > present %u\n",
4467 devq->send_queue.qfrozen_cnt);
4470 devq->send_queue.qfrozen_cnt--;
4471 if (devq->send_queue.qfrozen_cnt == 0) {
4474 * Now that we are unfrozen run the send queue.
4476 xpt_run_devq(sim->devq);
4479 mtx_unlock(&devq->send_mtx);
4483 xpt_done(union ccb *done_ccb)
4485 struct cam_doneq *queue;
4488 #if defined(BUF_TRACKING) || defined(FULL_BUF_TRACKING)
4489 if (done_ccb->ccb_h.func_code == XPT_SCSI_IO &&
4490 done_ccb->csio.bio != NULL)
4491 biotrack(done_ccb->csio.bio, __func__);
4494 CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE,
4495 ("xpt_done: func= %#x %s status %#x\n",
4496 done_ccb->ccb_h.func_code,
4497 xpt_action_name(done_ccb->ccb_h.func_code),
4498 done_ccb->ccb_h.status));
4499 if ((done_ccb->ccb_h.func_code & XPT_FC_QUEUED) == 0)
4502 /* Store the time the ccb was in the sim */
4503 done_ccb->ccb_h.qos.periph_data = cam_iosched_delta_t(done_ccb->ccb_h.qos.periph_data);
4504 done_ccb->ccb_h.status |= CAM_QOS_VALID;
4505 hash = (u_int)(done_ccb->ccb_h.path_id + done_ccb->ccb_h.target_id +
4506 done_ccb->ccb_h.target_lun) % cam_num_doneqs;
4507 queue = &cam_doneqs[hash];
4508 mtx_lock(&queue->cam_doneq_mtx);
4509 run = (queue->cam_doneq_sleep && STAILQ_EMPTY(&queue->cam_doneq));
4510 STAILQ_INSERT_TAIL(&queue->cam_doneq, &done_ccb->ccb_h, sim_links.stqe);
4511 done_ccb->ccb_h.pinfo.index = CAM_DONEQ_INDEX;
4512 mtx_unlock(&queue->cam_doneq_mtx);
4513 if (run && !dumping)
4514 wakeup(&queue->cam_doneq);
4518 xpt_done_direct(union ccb *done_ccb)
4521 CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE,
4522 ("xpt_done_direct: status %#x\n", done_ccb->ccb_h.status));
4523 if ((done_ccb->ccb_h.func_code & XPT_FC_QUEUED) == 0)
4526 /* Store the time the ccb was in the sim */
4527 done_ccb->ccb_h.qos.periph_data = cam_iosched_delta_t(done_ccb->ccb_h.qos.periph_data);
4528 done_ccb->ccb_h.status |= CAM_QOS_VALID;
4529 xpt_done_process(&done_ccb->ccb_h);
4537 new_ccb = malloc(sizeof(*new_ccb), M_CAMCCB, M_ZERO|M_WAITOK);
4542 xpt_alloc_ccb_nowait(void)
4546 new_ccb = malloc(sizeof(*new_ccb), M_CAMCCB, M_ZERO|M_NOWAIT);
4551 xpt_free_ccb(union ccb *free_ccb)
4553 struct cam_periph *periph;
4555 if (free_ccb->ccb_h.alloc_flags & CAM_CCB_FROM_UMA) {
4557 * Looks like a CCB allocated from a periph UMA zone.
4559 periph = free_ccb->ccb_h.path->periph;
4560 uma_zfree(periph->ccb_zone, free_ccb);
4562 free(free_ccb, M_CAMCCB);
4566 /* Private XPT functions */
4569 * Get a CAM control block for the caller. Charge the structure to the device
4570 * referenced by the path. If we don't have sufficient resources to allocate
4571 * more ccbs, we return NULL.
4574 xpt_get_ccb_nowait(struct cam_periph *periph)
4579 if (periph->ccb_zone != NULL) {
4580 alloc_flags = CAM_CCB_FROM_UMA;
4581 new_ccb = uma_zalloc(periph->ccb_zone, M_ZERO|M_NOWAIT);
4584 new_ccb = malloc(sizeof(*new_ccb), M_CAMCCB, M_ZERO|M_NOWAIT);
4586 if (new_ccb == NULL)
4588 new_ccb->ccb_h.alloc_flags = alloc_flags;
4589 periph->periph_allocated++;
4590 cam_ccbq_take_opening(&periph->path->device->ccbq);
4595 xpt_get_ccb(struct cam_periph *periph)
4600 cam_periph_unlock(periph);
4601 if (periph->ccb_zone != NULL) {
4602 alloc_flags = CAM_CCB_FROM_UMA;
4603 new_ccb = uma_zalloc(periph->ccb_zone, M_ZERO|M_WAITOK);
4606 new_ccb = malloc(sizeof(*new_ccb), M_CAMCCB, M_ZERO|M_WAITOK);
4608 new_ccb->ccb_h.alloc_flags = alloc_flags;
4609 cam_periph_lock(periph);
4610 periph->periph_allocated++;
4611 cam_ccbq_take_opening(&periph->path->device->ccbq);
4616 cam_periph_getccb(struct cam_periph *periph, uint32_t priority)
4618 struct ccb_hdr *ccb_h;
4620 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("cam_periph_getccb\n"));
4621 cam_periph_assert(periph, MA_OWNED);
4622 while ((ccb_h = SLIST_FIRST(&periph->ccb_list)) == NULL ||
4623 ccb_h->pinfo.priority != priority) {
4624 if (priority < periph->immediate_priority) {
4625 periph->immediate_priority = priority;
4626 xpt_run_allocq(periph, 0);
4628 cam_periph_sleep(periph, &periph->ccb_list, PRIBIO,
4631 SLIST_REMOVE_HEAD(&periph->ccb_list, periph_links.sle);
4632 return ((union ccb *)ccb_h);
4636 xpt_acquire_bus(struct cam_eb *bus)
4645 xpt_release_bus(struct cam_eb *bus)
4649 KASSERT(bus->refcount >= 1, ("bus->refcount >= 1"));
4650 if (--bus->refcount > 0) {
4654 TAILQ_REMOVE(&xsoftc.xpt_busses, bus, links);
4655 xsoftc.bus_generation++;
4657 KASSERT(TAILQ_EMPTY(&bus->et_entries),
4658 ("destroying bus, but target list is not empty"));
4659 cam_sim_release(bus->sim);
4660 mtx_destroy(&bus->eb_mtx);
4661 free(bus, M_CAMXPT);
4664 static struct cam_et *
4665 xpt_alloc_target(struct cam_eb *bus, target_id_t target_id)
4667 struct cam_et *cur_target, *target;
4669 mtx_assert(&xsoftc.xpt_topo_lock, MA_OWNED);
4670 mtx_assert(&bus->eb_mtx, MA_OWNED);
4671 target = (struct cam_et *)malloc(sizeof(*target), M_CAMXPT,
4676 TAILQ_INIT(&target->ed_entries);
4678 target->target_id = target_id;
4679 target->refcount = 1;
4680 target->generation = 0;
4681 target->luns = NULL;
4682 mtx_init(&target->luns_mtx, "CAM LUNs lock", NULL, MTX_DEF);
4683 timevalclear(&target->last_reset);
4685 * Hold a reference to our parent bus so it
4686 * will not go away before we do.
4690 /* Insertion sort into our bus's target list */
4691 cur_target = TAILQ_FIRST(&bus->et_entries);
4692 while (cur_target != NULL && cur_target->target_id < target_id)
4693 cur_target = TAILQ_NEXT(cur_target, links);
4694 if (cur_target != NULL) {
4695 TAILQ_INSERT_BEFORE(cur_target, target, links);
4697 TAILQ_INSERT_TAIL(&bus->et_entries, target, links);
4704 xpt_acquire_target(struct cam_et *target)
4706 struct cam_eb *bus = target->bus;
4708 mtx_lock(&bus->eb_mtx);
4710 mtx_unlock(&bus->eb_mtx);
4714 xpt_release_target(struct cam_et *target)
4716 struct cam_eb *bus = target->bus;
4718 mtx_lock(&bus->eb_mtx);
4719 if (--target->refcount > 0) {
4720 mtx_unlock(&bus->eb_mtx);
4723 TAILQ_REMOVE(&bus->et_entries, target, links);
4725 mtx_unlock(&bus->eb_mtx);
4726 KASSERT(TAILQ_EMPTY(&target->ed_entries),
4727 ("destroying target, but device list is not empty"));
4728 xpt_release_bus(bus);
4729 mtx_destroy(&target->luns_mtx);
4731 free(target->luns, M_CAMXPT);
4732 free(target, M_CAMXPT);
4735 static struct cam_ed *
4736 xpt_alloc_device_default(struct cam_eb *bus, struct cam_et *target,
4739 struct cam_ed *device;
4741 device = xpt_alloc_device(bus, target, lun_id);
4745 device->mintags = 1;
4746 device->maxtags = 1;
4751 xpt_destroy_device(void *context, int pending)
4753 struct cam_ed *device = context;
4755 mtx_lock(&device->device_mtx);
4756 mtx_destroy(&device->device_mtx);
4757 free(device, M_CAMDEV);
4761 xpt_alloc_device(struct cam_eb *bus, struct cam_et *target, lun_id_t lun_id)
4763 struct cam_ed *cur_device, *device;
4764 struct cam_devq *devq;
4767 mtx_assert(&bus->eb_mtx, MA_OWNED);
4768 /* Make space for us in the device queue on our bus */
4769 devq = bus->sim->devq;
4770 mtx_lock(&devq->send_mtx);
4771 status = cam_devq_resize(devq, devq->send_queue.array_size + 1);
4772 mtx_unlock(&devq->send_mtx);
4773 if (status != CAM_REQ_CMP)
4776 device = (struct cam_ed *)malloc(sizeof(*device),
4777 M_CAMDEV, M_NOWAIT|M_ZERO);
4781 cam_init_pinfo(&device->devq_entry);
4782 device->target = target;
4783 device->lun_id = lun_id;
4784 device->sim = bus->sim;
4785 if (cam_ccbq_init(&device->ccbq,
4786 bus->sim->max_dev_openings) != 0) {
4787 free(device, M_CAMDEV);
4790 SLIST_INIT(&device->asyncs);
4791 SLIST_INIT(&device->periphs);
4792 device->generation = 0;
4793 device->flags = CAM_DEV_UNCONFIGURED;
4794 device->tag_delay_count = 0;
4795 device->tag_saved_openings = 0;
4796 device->refcount = 1;
4797 mtx_init(&device->device_mtx, "CAM device lock", NULL, MTX_DEF);
4798 callout_init_mtx(&device->callout, &devq->send_mtx, 0);
4799 TASK_INIT(&device->device_destroy_task, 0, xpt_destroy_device, device);
4801 * Hold a reference to our parent bus so it
4802 * will not go away before we do.
4806 cur_device = TAILQ_FIRST(&target->ed_entries);
4807 while (cur_device != NULL && cur_device->lun_id < lun_id)
4808 cur_device = TAILQ_NEXT(cur_device, links);
4809 if (cur_device != NULL)
4810 TAILQ_INSERT_BEFORE(cur_device, device, links);
4812 TAILQ_INSERT_TAIL(&target->ed_entries, device, links);
4813 target->generation++;
4818 xpt_acquire_device(struct cam_ed *device)
4820 struct cam_eb *bus = device->target->bus;
4822 mtx_lock(&bus->eb_mtx);
4824 mtx_unlock(&bus->eb_mtx);
4828 xpt_release_device(struct cam_ed *device)
4830 struct cam_eb *bus = device->target->bus;
4831 struct cam_devq *devq;
4833 mtx_lock(&bus->eb_mtx);
4834 if (--device->refcount > 0) {
4835 mtx_unlock(&bus->eb_mtx);
4839 TAILQ_REMOVE(&device->target->ed_entries, device,links);
4840 device->target->generation++;
4841 mtx_unlock(&bus->eb_mtx);
4843 /* Release our slot in the devq */
4844 devq = bus->sim->devq;
4845 mtx_lock(&devq->send_mtx);
4846 cam_devq_resize(devq, devq->send_queue.array_size - 1);
4848 KASSERT(SLIST_EMPTY(&device->periphs),
4849 ("destroying device, but periphs list is not empty"));
4850 KASSERT(device->devq_entry.index == CAM_UNQUEUED_INDEX,
4851 ("destroying device while still queued for ccbs"));
4853 /* The send_mtx must be held when accessing the callout */
4854 if ((device->flags & CAM_DEV_REL_TIMEOUT_PENDING) != 0)
4855 callout_stop(&device->callout);
4857 mtx_unlock(&devq->send_mtx);
4859 xpt_release_target(device->target);
4861 cam_ccbq_fini(&device->ccbq);
4863 * Free allocated memory. free(9) does nothing if the
4864 * supplied pointer is NULL, so it is safe to call without
4867 free(device->supported_vpds, M_CAMXPT);
4868 free(device->device_id, M_CAMXPT);
4869 free(device->ext_inq, M_CAMXPT);
4870 free(device->physpath, M_CAMXPT);
4871 free(device->rcap_buf, M_CAMXPT);
4872 free(device->serial_num, M_CAMXPT);
4873 free(device->nvme_data, M_CAMXPT);
4874 free(device->nvme_cdata, M_CAMXPT);
4875 taskqueue_enqueue(xsoftc.xpt_taskq, &device->device_destroy_task);
4879 xpt_dev_ccbq_resize(struct cam_path *path, int newopenings)
4885 mtx_lock(&dev->sim->devq->send_mtx);
4886 result = cam_ccbq_resize(&dev->ccbq, newopenings);
4887 mtx_unlock(&dev->sim->devq->send_mtx);
4888 if ((dev->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
4889 || (dev->inq_flags & SID_CmdQue) != 0)
4890 dev->tag_saved_openings = newopenings;
4894 static struct cam_eb *
4895 xpt_find_bus(path_id_t path_id)
4900 for (bus = TAILQ_FIRST(&xsoftc.xpt_busses);
4902 bus = TAILQ_NEXT(bus, links)) {
4903 if (bus->path_id == path_id) {
4912 static struct cam_et *
4913 xpt_find_target(struct cam_eb *bus, target_id_t target_id)
4915 struct cam_et *target;
4917 mtx_assert(&bus->eb_mtx, MA_OWNED);
4918 for (target = TAILQ_FIRST(&bus->et_entries);
4920 target = TAILQ_NEXT(target, links)) {
4921 if (target->target_id == target_id) {
4929 static struct cam_ed *
4930 xpt_find_device(struct cam_et *target, lun_id_t lun_id)
4932 struct cam_ed *device;
4934 mtx_assert(&target->bus->eb_mtx, MA_OWNED);
4935 for (device = TAILQ_FIRST(&target->ed_entries);
4937 device = TAILQ_NEXT(device, links)) {
4938 if (device->lun_id == lun_id) {
4947 xpt_start_tags(struct cam_path *path)
4949 struct ccb_relsim crs;
4950 struct cam_ed *device;
4951 struct cam_sim *sim;
4954 device = path->device;
4955 sim = path->bus->sim;
4956 device->flags &= ~CAM_DEV_TAG_AFTER_COUNT;
4957 xpt_freeze_devq(path, /*count*/1);
4958 device->inq_flags |= SID_CmdQue;
4959 if (device->tag_saved_openings != 0)
4960 newopenings = device->tag_saved_openings;
4962 newopenings = min(device->maxtags,
4963 sim->max_tagged_dev_openings);
4964 xpt_dev_ccbq_resize(path, newopenings);
4965 xpt_async(AC_GETDEV_CHANGED, path, NULL);
4966 memset(&crs, 0, sizeof(crs));
4967 xpt_setup_ccb(&crs.ccb_h, path, CAM_PRIORITY_NORMAL);
4968 crs.ccb_h.func_code = XPT_REL_SIMQ;
4969 crs.release_flags = RELSIM_RELEASE_AFTER_QEMPTY;
4971 = crs.release_timeout
4974 xpt_action((union ccb *)&crs);
4978 xpt_stop_tags(struct cam_path *path)
4980 struct ccb_relsim crs;
4981 struct cam_ed *device;
4982 struct cam_sim *sim;
4984 device = path->device;
4985 sim = path->bus->sim;
4986 device->flags &= ~CAM_DEV_TAG_AFTER_COUNT;
4987 device->tag_delay_count = 0;
4988 xpt_freeze_devq(path, /*count*/1);
4989 device->inq_flags &= ~SID_CmdQue;
4990 xpt_dev_ccbq_resize(path, sim->max_dev_openings);
4991 xpt_async(AC_GETDEV_CHANGED, path, NULL);
4992 memset(&crs, 0, sizeof(crs));
4993 xpt_setup_ccb(&crs.ccb_h, path, CAM_PRIORITY_NORMAL);
4994 crs.ccb_h.func_code = XPT_REL_SIMQ;
4995 crs.release_flags = RELSIM_RELEASE_AFTER_QEMPTY;
4997 = crs.release_timeout
5000 xpt_action((union ccb *)&crs);
5004 * Assume all possible buses are detected by this time, so allow boot
5005 * as soon as they all are scanned.
5008 xpt_boot_delay(void *arg)
5015 * Now that all config hooks have completed, start boot_delay timer,
5016 * waiting for possibly still undetected buses (USB) to appear.
5019 xpt_ch_done(void *arg)
5022 callout_init(&xsoftc.boot_callout, 1);
5023 callout_reset_sbt(&xsoftc.boot_callout, SBT_1MS * xsoftc.boot_delay,
5024 SBT_1MS, xpt_boot_delay, NULL, 0);
5026 SYSINIT(xpt_hw_delay, SI_SUB_INT_CONFIG_HOOKS, SI_ORDER_ANY, xpt_ch_done, NULL);
5029 * Now that interrupts are enabled, go find our devices
5032 xpt_config(void *arg)
5034 if (taskqueue_start_threads(&xsoftc.xpt_taskq, 1, PRIBIO, "CAM taskq"))
5035 printf("xpt_config: failed to create taskqueue thread.\n");
5037 /* Setup debugging path */
5038 if (cam_dflags != CAM_DEBUG_NONE) {
5039 if (xpt_create_path(&cam_dpath, NULL,
5040 CAM_DEBUG_BUS, CAM_DEBUG_TARGET,
5041 CAM_DEBUG_LUN) != CAM_REQ_CMP) {
5042 printf("xpt_config: xpt_create_path() failed for debug"
5043 " target %d:%d:%d, debugging disabled\n",
5044 CAM_DEBUG_BUS, CAM_DEBUG_TARGET, CAM_DEBUG_LUN);
5045 cam_dflags = CAM_DEBUG_NONE;
5050 periphdriver_init(1);
5053 /* Fire up rescan thread. */
5054 if (kproc_kthread_add(xpt_scanner_thread, NULL, &cam_proc, NULL, 0, 0,
5055 "cam", "scanner")) {
5056 printf("xpt_config: failed to create rescan thread.\n");
5061 xpt_hold_boot_locked(void)
5064 if (xsoftc.buses_to_config++ == 0)
5065 root_mount_hold_token("CAM", &xsoftc.xpt_rootmount);
5073 xpt_hold_boot_locked();
5078 xpt_release_boot(void)
5082 if (--xsoftc.buses_to_config == 0) {
5083 if (xsoftc.buses_config_done == 0) {
5084 xsoftc.buses_config_done = 1;
5085 xsoftc.buses_to_config++;
5086 TASK_INIT(&xsoftc.boot_task, 0, xpt_finishconfig_task,
5088 taskqueue_enqueue(taskqueue_thread, &xsoftc.boot_task);
5090 root_mount_rel(&xsoftc.xpt_rootmount);
5096 * If the given device only has one peripheral attached to it, and if that
5097 * peripheral is the passthrough driver, announce it. This insures that the
5098 * user sees some sort of announcement for every peripheral in their system.
5101 xptpassannouncefunc(struct cam_ed *device, void *arg)
5103 struct cam_periph *periph;
5106 for (periph = SLIST_FIRST(&device->periphs), i = 0; periph != NULL;
5107 periph = SLIST_NEXT(periph, periph_links), i++);
5109 periph = SLIST_FIRST(&device->periphs);
5111 && (strncmp(periph->periph_name, "pass", 4) == 0))
5112 xpt_announce_periph(periph, NULL);
5118 xpt_finishconfig_task(void *context, int pending)
5121 periphdriver_init(2);
5123 * Check for devices with no "standard" peripheral driver
5124 * attached. For any devices like that, announce the
5125 * passthrough driver so the user will see something.
5128 xpt_for_all_devices(xptpassannouncefunc, NULL);
5134 xpt_register_async(int event, ac_callback_t *cbfunc, void *cbarg,
5135 struct cam_path *path)
5137 struct ccb_setasync csa;
5139 bool xptpath = false;
5142 status = xpt_create_path(&path, /*periph*/NULL, CAM_XPT_PATH_ID,
5143 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
5144 if (status != CAM_REQ_CMP)
5146 xpt_path_lock(path);
5150 memset(&csa, 0, sizeof(csa));
5151 xpt_setup_ccb(&csa.ccb_h, path, CAM_PRIORITY_NORMAL);
5152 csa.ccb_h.func_code = XPT_SASYNC_CB;
5153 csa.event_enable = event;
5154 csa.callback = cbfunc;
5155 csa.callback_arg = cbarg;
5156 xpt_action((union ccb *)&csa);
5157 status = csa.ccb_h.status;
5159 CAM_DEBUG(csa.ccb_h.path, CAM_DEBUG_TRACE,
5160 ("xpt_register_async: func %p\n", cbfunc));
5163 xpt_path_unlock(path);
5164 xpt_free_path(path);
5167 if ((status == CAM_REQ_CMP) &&
5168 (csa.event_enable & AC_FOUND_DEVICE)) {
5170 * Get this peripheral up to date with all
5171 * the currently existing devices.
5173 xpt_for_all_devices(xptsetasyncfunc, &csa);
5175 if ((status == CAM_REQ_CMP) &&
5176 (csa.event_enable & AC_PATH_REGISTERED)) {
5178 * Get this peripheral up to date with all
5179 * the currently existing buses.
5181 xpt_for_all_busses(xptsetasyncbusfunc, &csa);
5188 xptaction(struct cam_sim *sim, union ccb *work_ccb)
5190 CAM_DEBUG(work_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("xptaction\n"));
5192 switch (work_ccb->ccb_h.func_code) {
5193 /* Common cases first */
5194 case XPT_PATH_INQ: /* Path routing inquiry */
5196 struct ccb_pathinq *cpi;
5198 cpi = &work_ccb->cpi;
5199 cpi->version_num = 1; /* XXX??? */
5200 cpi->hba_inquiry = 0;
5201 cpi->target_sprt = 0;
5203 cpi->hba_eng_cnt = 0;
5204 cpi->max_target = 0;
5206 cpi->initiator_id = 0;
5207 strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
5208 strlcpy(cpi->hba_vid, "", HBA_IDLEN);
5209 strlcpy(cpi->dev_name, sim->sim_name, DEV_IDLEN);
5210 cpi->unit_number = sim->unit_number;
5211 cpi->bus_id = sim->bus_id;
5212 cpi->base_transfer_speed = 0;
5213 cpi->protocol = PROTO_UNSPECIFIED;
5214 cpi->protocol_version = PROTO_VERSION_UNSPECIFIED;
5215 cpi->transport = XPORT_UNSPECIFIED;
5216 cpi->transport_version = XPORT_VERSION_UNSPECIFIED;
5217 cpi->ccb_h.status = CAM_REQ_CMP;
5221 work_ccb->ccb_h.status = CAM_REQ_INVALID;
5228 * The xpt as a "controller" has no interrupt sources, so polling
5232 xptpoll(struct cam_sim *sim)
5237 xpt_lock_buses(void)
5239 mtx_lock(&xsoftc.xpt_topo_lock);
5243 xpt_unlock_buses(void)
5245 mtx_unlock(&xsoftc.xpt_topo_lock);
5249 xpt_path_mtx(struct cam_path *path)
5252 return (&path->device->device_mtx);
5256 xpt_done_process(struct ccb_hdr *ccb_h)
5258 struct cam_sim *sim = NULL;
5259 struct cam_devq *devq = NULL;
5260 struct mtx *mtx = NULL;
5262 #if defined(BUF_TRACKING) || defined(FULL_BUF_TRACKING)
5263 struct ccb_scsiio *csio;
5265 if (ccb_h->func_code == XPT_SCSI_IO) {
5266 csio = &((union ccb *)ccb_h)->csio;
5267 if (csio->bio != NULL)
5268 biotrack(csio->bio, __func__);
5272 if (ccb_h->flags & CAM_HIGH_POWER) {
5273 struct highpowerlist *hphead;
5274 struct cam_ed *device;
5276 mtx_lock(&xsoftc.xpt_highpower_lock);
5277 hphead = &xsoftc.highpowerq;
5279 device = STAILQ_FIRST(hphead);
5282 * Increment the count since this command is done.
5284 xsoftc.num_highpower++;
5287 * Any high powered commands queued up?
5289 if (device != NULL) {
5290 STAILQ_REMOVE_HEAD(hphead, highpowerq_entry);
5291 mtx_unlock(&xsoftc.xpt_highpower_lock);
5293 mtx_lock(&device->sim->devq->send_mtx);
5294 xpt_release_devq_device(device,
5295 /*count*/1, /*runqueue*/TRUE);
5296 mtx_unlock(&device->sim->devq->send_mtx);
5298 mtx_unlock(&xsoftc.xpt_highpower_lock);
5302 * Insulate against a race where the periph is destroyed but CCBs are
5303 * still not all processed. This shouldn't happen, but allows us better
5304 * bug diagnostic when it does.
5306 if (ccb_h->path->bus)
5307 sim = ccb_h->path->bus->sim;
5309 if (ccb_h->status & CAM_RELEASE_SIMQ) {
5310 KASSERT(sim, ("sim missing for CAM_RELEASE_SIMQ request"));
5311 xpt_release_simq(sim, /*run_queue*/FALSE);
5312 ccb_h->status &= ~CAM_RELEASE_SIMQ;
5315 if ((ccb_h->flags & CAM_DEV_QFRZDIS)
5316 && (ccb_h->status & CAM_DEV_QFRZN)) {
5317 xpt_release_devq(ccb_h->path, /*count*/1, /*run_queue*/TRUE);
5318 ccb_h->status &= ~CAM_DEV_QFRZN;
5321 if ((ccb_h->func_code & XPT_FC_USER_CCB) == 0) {
5322 struct cam_ed *dev = ccb_h->path->device;
5326 KASSERT(devq, ("Periph disappeared with CCB %p %s request pending.",
5327 ccb_h, xpt_action_name(ccb_h->func_code)));
5329 mtx_lock(&devq->send_mtx);
5330 devq->send_active--;
5331 devq->send_openings++;
5332 cam_ccbq_ccb_done(&dev->ccbq, (union ccb *)ccb_h);
5334 if (((dev->flags & CAM_DEV_REL_ON_QUEUE_EMPTY) != 0
5335 && (dev->ccbq.dev_active == 0))) {
5336 dev->flags &= ~CAM_DEV_REL_ON_QUEUE_EMPTY;
5337 xpt_release_devq_device(dev, /*count*/1,
5338 /*run_queue*/FALSE);
5341 if (((dev->flags & CAM_DEV_REL_ON_COMPLETE) != 0
5342 && (ccb_h->status&CAM_STATUS_MASK) != CAM_REQUEUE_REQ)) {
5343 dev->flags &= ~CAM_DEV_REL_ON_COMPLETE;
5344 xpt_release_devq_device(dev, /*count*/1,
5345 /*run_queue*/FALSE);
5348 if (!device_is_queued(dev))
5349 (void)xpt_schedule_devq(devq, dev);
5351 mtx_unlock(&devq->send_mtx);
5353 if ((dev->flags & CAM_DEV_TAG_AFTER_COUNT) != 0) {
5354 mtx = xpt_path_mtx(ccb_h->path);
5357 if ((dev->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
5358 && (--dev->tag_delay_count == 0))
5359 xpt_start_tags(ccb_h->path);
5363 if ((ccb_h->flags & CAM_UNLOCKED) == 0) {
5365 mtx = xpt_path_mtx(ccb_h->path);
5375 /* Call the peripheral driver's callback */
5376 ccb_h->pinfo.index = CAM_UNQUEUED_INDEX;
5377 (*ccb_h->cbfcnp)(ccb_h->path->periph, (union ccb *)ccb_h);
5383 * Parameterize instead and use xpt_done_td?
5386 xpt_async_td(void *arg)
5388 struct cam_doneq *queue = arg;
5389 struct ccb_hdr *ccb_h;
5390 STAILQ_HEAD(, ccb_hdr) doneq;
5392 STAILQ_INIT(&doneq);
5393 mtx_lock(&queue->cam_doneq_mtx);
5395 while (STAILQ_EMPTY(&queue->cam_doneq))
5396 msleep(&queue->cam_doneq, &queue->cam_doneq_mtx,
5398 STAILQ_CONCAT(&doneq, &queue->cam_doneq);
5399 mtx_unlock(&queue->cam_doneq_mtx);
5401 while ((ccb_h = STAILQ_FIRST(&doneq)) != NULL) {
5402 STAILQ_REMOVE_HEAD(&doneq, sim_links.stqe);
5403 xpt_done_process(ccb_h);
5406 mtx_lock(&queue->cam_doneq_mtx);
5411 xpt_done_td(void *arg)
5413 struct cam_doneq *queue = arg;
5414 struct ccb_hdr *ccb_h;
5415 STAILQ_HEAD(, ccb_hdr) doneq;
5417 STAILQ_INIT(&doneq);
5418 mtx_lock(&queue->cam_doneq_mtx);
5420 while (STAILQ_EMPTY(&queue->cam_doneq)) {
5421 queue->cam_doneq_sleep = 1;
5422 msleep(&queue->cam_doneq, &queue->cam_doneq_mtx,
5424 queue->cam_doneq_sleep = 0;
5426 STAILQ_CONCAT(&doneq, &queue->cam_doneq);
5427 mtx_unlock(&queue->cam_doneq_mtx);
5429 THREAD_NO_SLEEPING();
5430 while ((ccb_h = STAILQ_FIRST(&doneq)) != NULL) {
5431 STAILQ_REMOVE_HEAD(&doneq, sim_links.stqe);
5432 xpt_done_process(ccb_h);
5434 THREAD_SLEEPING_OK();
5436 mtx_lock(&queue->cam_doneq_mtx);
5441 camisr_runqueue(void)
5443 struct ccb_hdr *ccb_h;
5444 struct cam_doneq *queue;
5447 /* Process global queues. */
5448 for (i = 0; i < cam_num_doneqs; i++) {
5449 queue = &cam_doneqs[i];
5450 mtx_lock(&queue->cam_doneq_mtx);
5451 while ((ccb_h = STAILQ_FIRST(&queue->cam_doneq)) != NULL) {
5452 STAILQ_REMOVE_HEAD(&queue->cam_doneq, sim_links.stqe);
5453 mtx_unlock(&queue->cam_doneq_mtx);
5454 xpt_done_process(ccb_h);
5455 mtx_lock(&queue->cam_doneq_mtx);
5457 mtx_unlock(&queue->cam_doneq_mtx);
5462 * @brief Return the device_t associated with the path
5464 * When a SIM is created, it registers a bus with a NEWBUS device_t. This is
5465 * stored in the internal cam_eb bus structure. There is no guarnatee any given
5466 * path will have a @c device_t associated with it (it's legal to call @c
5467 * xpt_bus_register with a @c NULL @c device_t.
5469 * @param path Path to return the device_t for.
5472 xpt_path_sim_device(const struct cam_path *path)
5474 return (path->bus->parent_dev);
5483 static struct kv map[] = {
5484 { XPT_NOOP, "XPT_NOOP" },
5485 { XPT_SCSI_IO, "XPT_SCSI_IO" },
5486 { XPT_GDEV_TYPE, "XPT_GDEV_TYPE" },
5487 { XPT_GDEVLIST, "XPT_GDEVLIST" },
5488 { XPT_PATH_INQ, "XPT_PATH_INQ" },
5489 { XPT_REL_SIMQ, "XPT_REL_SIMQ" },
5490 { XPT_SASYNC_CB, "XPT_SASYNC_CB" },
5491 { XPT_SDEV_TYPE, "XPT_SDEV_TYPE" },
5492 { XPT_SCAN_BUS, "XPT_SCAN_BUS" },
5493 { XPT_DEV_MATCH, "XPT_DEV_MATCH" },
5494 { XPT_DEBUG, "XPT_DEBUG" },
5495 { XPT_PATH_STATS, "XPT_PATH_STATS" },
5496 { XPT_GDEV_STATS, "XPT_GDEV_STATS" },
5497 { XPT_DEV_ADVINFO, "XPT_DEV_ADVINFO" },
5498 { XPT_ASYNC, "XPT_ASYNC" },
5499 { XPT_ABORT, "XPT_ABORT" },
5500 { XPT_RESET_BUS, "XPT_RESET_BUS" },
5501 { XPT_RESET_DEV, "XPT_RESET_DEV" },
5502 { XPT_TERM_IO, "XPT_TERM_IO" },
5503 { XPT_SCAN_LUN, "XPT_SCAN_LUN" },
5504 { XPT_GET_TRAN_SETTINGS, "XPT_GET_TRAN_SETTINGS" },
5505 { XPT_SET_TRAN_SETTINGS, "XPT_SET_TRAN_SETTINGS" },
5506 { XPT_CALC_GEOMETRY, "XPT_CALC_GEOMETRY" },
5507 { XPT_ATA_IO, "XPT_ATA_IO" },
5508 { XPT_GET_SIM_KNOB, "XPT_GET_SIM_KNOB" },
5509 { XPT_SET_SIM_KNOB, "XPT_SET_SIM_KNOB" },
5510 { XPT_NVME_IO, "XPT_NVME_IO" },
5511 { XPT_MMC_IO, "XPT_MMC_IO" },
5512 { XPT_SMP_IO, "XPT_SMP_IO" },
5513 { XPT_SCAN_TGT, "XPT_SCAN_TGT" },
5514 { XPT_NVME_ADMIN, "XPT_NVME_ADMIN" },
5515 { XPT_ENG_INQ, "XPT_ENG_INQ" },
5516 { XPT_ENG_EXEC, "XPT_ENG_EXEC" },
5517 { XPT_EN_LUN, "XPT_EN_LUN" },
5518 { XPT_TARGET_IO, "XPT_TARGET_IO" },
5519 { XPT_ACCEPT_TARGET_IO, "XPT_ACCEPT_TARGET_IO" },
5520 { XPT_CONT_TARGET_IO, "XPT_CONT_TARGET_IO" },
5521 { XPT_IMMED_NOTIFY, "XPT_IMMED_NOTIFY" },
5522 { XPT_NOTIFY_ACK, "XPT_NOTIFY_ACK" },
5523 { XPT_IMMEDIATE_NOTIFY, "XPT_IMMEDIATE_NOTIFY" },
5524 { XPT_NOTIFY_ACKNOWLEDGE, "XPT_NOTIFY_ACKNOWLEDGE" },
5529 xpt_action_name(uint32_t action)
5531 static char buffer[32]; /* Only for unknown messages -- racy */
5532 struct kv *walker = map;
5534 while (walker->name != NULL) {
5535 if (walker->v == action)
5536 return (walker->name);
5540 snprintf(buffer, sizeof(buffer), "%#x", action);
5545 xpt_cam_path_debug(struct cam_path *path, const char *fmt, ...)
5548 char buf[XPT_PRINT_LEN]; /* balance to not eat too much stack */
5549 struct sbuf *sb = sbuf_new(&sbuf, buf, sizeof(buf), SBUF_FIXEDLEN);
5552 sbuf_set_drain(sb, sbuf_printf_drain, NULL);
5553 xpt_path_sbuf(path, sb);
5555 sbuf_vprintf(sb, fmt, ap);
5559 if (cam_debug_delay != 0)
5560 DELAY(cam_debug_delay);
5564 xpt_cam_dev_debug(struct cam_ed *dev, const char *fmt, ...)
5567 char buf[XPT_PRINT_LEN]; /* balance to not eat too much stack */
5568 struct sbuf *sb = sbuf_new(&sbuf, buf, sizeof(buf), SBUF_FIXEDLEN);
5571 sbuf_set_drain(sb, sbuf_printf_drain, NULL);
5572 xpt_device_sbuf(dev, sb);
5574 sbuf_vprintf(sb, fmt, ap);
5578 if (cam_debug_delay != 0)
5579 DELAY(cam_debug_delay);
5583 xpt_cam_debug(const char *fmt, ...)
5586 char buf[XPT_PRINT_LEN]; /* balance to not eat too much stack */
5587 struct sbuf *sb = sbuf_new(&sbuf, buf, sizeof(buf), SBUF_FIXEDLEN);
5590 sbuf_set_drain(sb, sbuf_printf_drain, NULL);
5591 sbuf_printf(sb, "cam_debug: ");
5593 sbuf_vprintf(sb, fmt, ap);
5597 if (cam_debug_delay != 0)
5598 DELAY(cam_debug_delay);