2 * Copyright (c) 1997,1998 Doug Rabson
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * $FreeBSD: src/sys/kern/subr_bus.c,v 1.54.2.9 2002/10/10 15:13:32 jhb Exp $
31 #include <sys/param.h>
32 #include <sys/queue.h>
33 #include <sys/malloc.h>
34 #include <sys/kernel.h>
35 #include <sys/module.h>
37 #include <sys/sysctl.h>
39 #include <sys/bus_private.h>
40 #include <sys/systm.h>
41 #include <machine/bus.h>
43 #include <machine/stdarg.h> /* for device_printf() */
45 MALLOC_DEFINE(M_BUS, "bus", "Bus data structures");
48 #define PDEBUG(a) (printf(__FUNCTION__ ":%d: ", __LINE__), printf a, printf("\n"))
49 #define DEVICENAME(d) ((d)? device_get_name(d): "no device")
50 #define DRIVERNAME(d) ((d)? d->name : "no driver")
51 #define DEVCLANAME(d) ((d)? d->name : "no devclass")
53 /* Produce the indenting, indent*2 spaces plus a '.' ahead of that to
54 * prevent syslog from deleting initial spaces
56 #define indentprintf(p) do { int iJ; printf("."); for (iJ=0; iJ<indent; iJ++) printf(" "); printf p ; } while(0)
58 static void print_method_list(device_method_t *m, int indent);
59 static void print_device_ops(device_ops_t ops, int indent);
60 static void print_device_short(device_t dev, int indent);
61 static void print_device(device_t dev, int indent);
62 void print_device_tree_short(device_t dev, int indent);
63 void print_device_tree(device_t dev, int indent);
64 static void print_driver_short(driver_t *driver, int indent);
65 static void print_driver(driver_t *driver, int indent);
66 static void print_driver_list(driver_list_t drivers, int indent);
67 static void print_devclass_short(devclass_t dc, int indent);
68 static void print_devclass(devclass_t dc, int indent);
69 void print_devclass_list_short(void);
70 void print_devclass_list(void);
73 /* Make the compiler ignore the function calls */
74 #define PDEBUG(a) /* nop */
75 #define DEVICENAME(d) /* nop */
76 #define DRIVERNAME(d) /* nop */
77 #define DEVCLANAME(d) /* nop */
79 #define print_method_list(m,i) /* nop */
80 #define print_device_ops(o,i) /* nop */
81 #define print_device_short(d,i) /* nop */
82 #define print_device(d,i) /* nop */
83 #define print_device_tree_short(d,i) /* nop */
84 #define print_device_tree(d,i) /* nop */
85 #define print_driver_short(d,i) /* nop */
86 #define print_driver(d,i) /* nop */
87 #define print_driver_list(d,i) /* nop */
88 #define print_devclass_short(d,i) /* nop */
89 #define print_devclass(d,i) /* nop */
90 #define print_devclass_list_short() /* nop */
91 #define print_devclass_list() /* nop */
95 static void device_register_oids(device_t dev);
96 static void device_unregister_oids(device_t dev);
100 * Method table handling
102 static int error_method(void);
103 static int next_method_offset = 1;
105 LIST_HEAD(methodlist, method) methods;
107 LIST_ENTRY(method) link; /* linked list of methods */
108 int offset; /* offset in method table */
109 int refs; /* count of device_op_desc users */
110 devop_t deflt; /* default implementation */
111 char* name; /* unique name of method */
115 register_method(struct device_op_desc *desc)
120 desc->method->refs++;
125 * Make sure that desc->deflt is always valid to simplify dispatch.
128 desc->deflt = error_method;
130 for (m = LIST_FIRST(&methods); m; m = LIST_NEXT(m, link)) {
131 if (!strcmp(m->name, desc->name)) {
132 desc->offset = m->offset;
135 PDEBUG(("method %p has the same name, %s, with offset %d",
136 (void *)m, desc->name, desc->offset));
141 m = (struct method *) malloc(sizeof(struct method)
142 + strlen(desc->name) + 1,
145 panic("register_method: out of memory");
146 bzero(m, sizeof(struct method) + strlen(desc->name) + 1);
147 m->offset = next_method_offset++;
149 m->deflt = desc->deflt;
150 m->name = (char*) (m + 1);
151 strcpy(m->name, desc->name);
152 LIST_INSERT_HEAD(&methods, m, link);
154 desc->offset = m->offset;
159 unregister_method(struct device_op_desc *desc)
161 struct method *m = desc->method;
164 PDEBUG(("method %s, reached refcount 0", desc->name));
165 LIST_REMOVE(m, link);
171 static int error_method(void)
176 static struct device_ops null_ops = {
182 compile_methods(driver_t *driver)
185 struct device_method *m;
190 * First register any methods which need it.
192 for (i = 0, m = driver->methods; m->desc; i++, m++)
193 register_method(m->desc);
196 * Then allocate the compiled op table.
198 ops = malloc(sizeof(struct device_ops) + (next_method_offset-1) * sizeof(devop_t),
201 panic("compile_methods: out of memory");
202 bzero(ops, sizeof(struct device_ops) + (next_method_offset-1) * sizeof(devop_t));
204 ops->maxoffset = next_method_offset;
205 /* Fill in default methods and then overwrite with driver methods */
206 for (i = 0; i < next_method_offset; i++)
207 ops->methods[i] = error_method;
208 for (cm = LIST_FIRST(&methods); cm; cm = LIST_NEXT(cm, link)) {
210 ops->methods[cm->offset] = cm->deflt;
212 for (i = 0, m = driver->methods; m->desc; i++, m++)
213 ops->methods[m->desc->offset] = m->func;
214 PDEBUG(("%s has %d method%s, wasting %d bytes",
215 DRIVERNAME(driver), i, (i==1?"":"s"),
216 (next_method_offset-i)*sizeof(devop_t)));
222 free_methods(driver_t *driver)
225 struct device_method *m;
228 * Unregister any methods which are no longer used.
230 for (i = 0, m = driver->methods; m->desc; i++, m++)
231 unregister_method(m->desc);
234 * Free memory and clean up.
236 free(driver->ops, M_BUS);
241 * Devclass implementation
244 static devclass_list_t devclasses = TAILQ_HEAD_INITIALIZER(devclasses);
247 devclass_find_internal(const char *classname, int create)
251 PDEBUG(("looking for %s", classname));
255 for (dc = TAILQ_FIRST(&devclasses); dc; dc = TAILQ_NEXT(dc, link))
256 if (!strcmp(dc->name, classname))
259 PDEBUG(("%s not found%s", classname, (create? ", creating": "")));
261 dc = malloc(sizeof(struct devclass) + strlen(classname) + 1,
265 bzero(dc, sizeof(struct devclass) + strlen(classname) + 1);
266 dc->name = (char*) (dc + 1);
267 strcpy(dc->name, classname);
270 TAILQ_INIT(&dc->drivers);
271 TAILQ_INSERT_TAIL(&devclasses, dc, link);
278 devclass_create(const char *classname)
280 return devclass_find_internal(classname, TRUE);
284 devclass_find(const char *classname)
286 return devclass_find_internal(classname, FALSE);
290 devclass_add_driver(devclass_t dc, driver_t *driver)
295 PDEBUG(("%s", DRIVERNAME(driver)));
297 dl = malloc(sizeof *dl, M_BUS, M_NOWAIT);
300 bzero(dl, sizeof *dl);
303 * Compile the driver's methods.
306 compile_methods(driver);
309 * Make sure the devclass which the driver is implementing exists.
311 devclass_find_internal(driver->name, TRUE);
314 TAILQ_INSERT_TAIL(&dc->drivers, dl, link);
318 * Call BUS_DRIVER_ADDED for any existing busses in this class.
320 for (i = 0; i < dc->maxunit; i++)
322 BUS_DRIVER_ADDED(dc->devices[i], driver);
328 devclass_delete_driver(devclass_t busclass, driver_t *driver)
330 devclass_t dc = devclass_find(driver->name);
336 PDEBUG(("%s from devclass %s", driver->name, DEVCLANAME(busclass)));
342 * Find the link structure in the bus' list of drivers.
344 for (dl = TAILQ_FIRST(&busclass->drivers); dl;
345 dl = TAILQ_NEXT(dl, link)) {
346 if (dl->driver == driver)
351 PDEBUG(("%s not found in %s list", driver->name, busclass->name));
356 * Disassociate from any devices. We iterate through all the
357 * devices in the devclass of the driver and detach any which are
358 * using the driver and which have a parent in the devclass which
359 * we are deleting from.
361 * Note that since a driver can be in multiple devclasses, we
362 * should not detach devices which are not children of devices in
363 * the affected devclass.
365 for (i = 0; i < dc->maxunit; i++) {
366 if (dc->devices[i]) {
367 dev = dc->devices[i];
368 if (dev->driver == driver
369 && dev->parent && dev->parent->devclass == busclass) {
370 if ((error = device_detach(dev)) != 0)
372 device_set_driver(dev, NULL);
377 TAILQ_REMOVE(&busclass->drivers, dl, link);
381 if (driver->refs == 0)
382 free_methods(driver);
388 devclass_find_driver_internal(devclass_t dc, const char *classname)
392 PDEBUG(("%s in devclass %s", classname, DEVCLANAME(dc)));
394 for (dl = TAILQ_FIRST(&dc->drivers); dl; dl = TAILQ_NEXT(dl, link)) {
395 if (!strcmp(dl->driver->name, classname))
399 PDEBUG(("not found"));
404 devclass_find_driver(devclass_t dc, const char *classname)
408 dl = devclass_find_driver_internal(dc, classname);
416 devclass_get_name(devclass_t dc)
422 devclass_get_device(devclass_t dc, int unit)
424 if (dc == NULL || unit < 0 || unit >= dc->maxunit)
426 return dc->devices[unit];
430 devclass_get_softc(devclass_t dc, int unit)
434 dev = devclass_get_device(dc, unit);
438 return (device_get_softc(dev));
442 devclass_get_devices(devclass_t dc, device_t **devlistp, int *devcountp)
449 for (i = 0; i < dc->maxunit; i++)
453 list = malloc(count * sizeof(device_t), M_TEMP, M_NOWAIT);
456 bzero(list, count * sizeof(device_t));
459 for (i = 0; i < dc->maxunit; i++)
460 if (dc->devices[i]) {
461 list[count] = dc->devices[i];
472 devclass_get_maxunit(devclass_t dc)
478 devclass_alloc_unit(devclass_t dc, int *unitp)
482 PDEBUG(("unit %d in devclass %s", unit, DEVCLANAME(dc)));
484 /* If we have been given a wired unit number, check for existing device */
486 if (unit >= 0 && unit < dc->maxunit && dc->devices[unit] != NULL) {
488 printf("%s-: %s%d exists, using next available unit number\n",
489 dc->name, dc->name, unit);
490 /* find the next available slot */
491 while (++unit < dc->maxunit && dc->devices[unit] != NULL)
496 /* Unwired device, find the next available slot for it */
498 while (unit < dc->maxunit && dc->devices[unit] != NULL)
503 * We've selected a unit beyond the length of the table, so let's extend
504 * the table to make room for all units up to and including this one.
506 if (unit >= dc->maxunit) {
510 newsize = roundup((unit + 1), MINALLOCSIZE / sizeof(device_t));
511 newlist = malloc(sizeof(device_t) * newsize, M_BUS, M_NOWAIT);
514 bcopy(dc->devices, newlist, sizeof(device_t) * dc->maxunit);
515 bzero(newlist + dc->maxunit,
516 sizeof(device_t) * (newsize - dc->maxunit));
518 free(dc->devices, M_BUS);
519 dc->devices = newlist;
520 dc->maxunit = newsize;
522 PDEBUG(("now: unit %d in devclass %s", unit, DEVCLANAME(dc)));
529 devclass_add_device(devclass_t dc, device_t dev)
533 PDEBUG(("%s in devclass %s", DEVICENAME(dev), DEVCLANAME(dc)));
535 buflen = strlen(dc->name) + 5;
536 dev->nameunit = malloc(buflen, M_BUS, M_NOWAIT);
539 bzero(dev->nameunit, buflen);
541 if ((error = devclass_alloc_unit(dc, &dev->unit)) != 0) {
542 free(dev->nameunit, M_BUS);
543 dev->nameunit = NULL;
546 dc->devices[dev->unit] = dev;
548 snprintf(dev->nameunit, buflen, "%s%d", dc->name, dev->unit);
550 #ifdef DEVICE_SYSCTLS
551 device_register_oids(dev);
558 devclass_delete_device(devclass_t dc, device_t dev)
563 PDEBUG(("%s in devclass %s", DEVICENAME(dev), DEVCLANAME(dc)));
565 if (dev->devclass != dc
566 || dc->devices[dev->unit] != dev)
567 panic("devclass_delete_device: inconsistent device class");
568 dc->devices[dev->unit] = NULL;
569 if (dev->flags & DF_WILDCARD)
571 dev->devclass = NULL;
572 free(dev->nameunit, M_BUS);
573 dev->nameunit = NULL;
575 #ifdef DEVICE_SYSCTLS
576 device_unregister_oids(dev);
583 make_device(device_t parent, const char *name, int unit)
588 PDEBUG(("%s at %s as unit %d", name, DEVICENAME(parent), unit));
591 dc = devclass_find_internal(name, TRUE);
593 printf("make_device: can't find device class %s\n", name);
599 dev = malloc(sizeof(struct device), M_BUS, M_NOWAIT);
602 bzero(dev, sizeof(struct device));
604 dev->parent = parent;
605 TAILQ_INIT(&dev->children);
606 dev->ops = &null_ops;
608 dev->devclass = NULL;
610 dev->nameunit = NULL;
614 dev->flags = DF_ENABLED;
617 dev->flags |= DF_WILDCARD;
619 dev->flags |= DF_FIXEDCLASS;
620 devclass_add_device(dc, dev);
625 dev->state = DS_NOTPRESENT;
631 device_print_child(device_t dev, device_t child)
635 if (device_is_alive(child)) {
636 retval += BUS_PRINT_CHILD(dev, child);
638 retval += device_printf(child, " not found\n");
644 device_add_child(device_t dev, const char *name, int unit)
646 return device_add_child_ordered(dev, 0, name, unit);
650 device_add_child_ordered(device_t dev, int order, const char *name, int unit)
655 PDEBUG(("%s at %s with order %d as unit %d",
656 name, DEVICENAME(dev), order, unit));
658 child = make_device(dev, name, unit);
661 child->order = order;
663 TAILQ_FOREACH(place, &dev->children, link)
664 if (place->order > order)
669 * The device 'place' is the first device whose order is
670 * greater than the new child.
672 TAILQ_INSERT_BEFORE(place, child, link);
675 * The new child's order is greater or equal to the order of
676 * any existing device. Add the child to the tail of the list.
678 TAILQ_INSERT_TAIL(&dev->children, child, link);
685 device_delete_child(device_t dev, device_t child)
690 PDEBUG(("%s from %s", DEVICENAME(child), DEVICENAME(dev)));
692 /* remove children first */
693 while ( (grandchild = TAILQ_FIRST(&child->children)) ) {
694 error = device_delete_child(child, grandchild);
699 if ((error = device_detach(child)) != 0)
702 devclass_delete_device(child->devclass, child);
703 TAILQ_REMOVE(&dev->children, child, link);
704 device_set_desc(child, NULL);
711 * Find only devices attached to this bus.
714 device_find_child(device_t dev, const char *classname, int unit)
719 dc = devclass_find(classname);
723 child = devclass_get_device(dc, unit);
724 if (child && child->parent == dev)
730 first_matching_driver(devclass_t dc, device_t dev)
733 return devclass_find_driver_internal(dc, dev->devclass->name);
735 return TAILQ_FIRST(&dc->drivers);
739 next_matching_driver(devclass_t dc, device_t dev, driverlink_t last)
743 for (dl = TAILQ_NEXT(last, link); dl; dl = TAILQ_NEXT(dl, link))
744 if (!strcmp(dev->devclass->name, dl->driver->name))
748 return TAILQ_NEXT(last, link);
752 device_probe_child(device_t dev, device_t child)
755 driverlink_t best = 0;
758 int hasclass = (child->devclass != 0);
762 panic("device_probe_child: parent device has no devclass");
764 if (child->state == DS_ALIVE)
767 for (dl = first_matching_driver(dc, child);
769 dl = next_matching_driver(dc, child, dl)) {
770 PDEBUG(("Trying %s", DRIVERNAME(dl->driver)));
771 device_set_driver(child, dl->driver);
773 device_set_devclass(child, dl->driver->name);
774 result = DEVICE_PROBE(child);
776 device_set_devclass(child, 0);
779 * If the driver returns SUCCESS, there can be no higher match
789 * The driver returned an error so it certainly doesn't match.
792 device_set_driver(child, 0);
797 * A priority lower than SUCCESS, remember the best matching
798 * driver. Initialise the value of pri for the first match.
800 if (best == 0 || result > pri) {
808 * If we found a driver, change state and initialise the devclass.
811 if (!child->devclass)
812 device_set_devclass(child, best->driver->name);
813 device_set_driver(child, best->driver);
816 * A bit bogus. Call the probe method again to make sure
817 * that we have the right description.
821 child->state = DS_ALIVE;
829 device_get_parent(device_t dev)
835 device_get_children(device_t dev, device_t **devlistp, int *devcountp)
842 for (child = TAILQ_FIRST(&dev->children); child;
843 child = TAILQ_NEXT(child, link))
846 list = malloc(count * sizeof(device_t), M_TEMP, M_NOWAIT);
849 bzero(list, count * sizeof(device_t));
852 for (child = TAILQ_FIRST(&dev->children); child;
853 child = TAILQ_NEXT(child, link)) {
865 device_get_driver(device_t dev)
871 device_get_devclass(device_t dev)
873 return dev->devclass;
877 device_get_name(device_t dev)
880 return devclass_get_name(dev->devclass);
885 device_get_nameunit(device_t dev)
887 return dev->nameunit;
891 device_get_unit(device_t dev)
897 device_get_desc(device_t dev)
903 device_get_flags(device_t dev)
905 return dev->devflags;
909 device_print_prettyname(device_t dev)
911 const char *name = device_get_name(dev);
914 return printf("unknown: ");
916 return printf("%s%d: ", name, device_get_unit(dev));
920 device_printf(device_t dev, const char * fmt, ...)
925 retval = device_print_prettyname(dev);
927 retval += vprintf(fmt, ap);
933 device_set_desc_internal(device_t dev, const char* desc, int copy)
935 if (dev->desc && (dev->flags & DF_DESCMALLOCED)) {
936 free(dev->desc, M_BUS);
937 dev->flags &= ~DF_DESCMALLOCED;
942 dev->desc = malloc(strlen(desc) + 1, M_BUS, M_NOWAIT);
944 strcpy(dev->desc, desc);
945 dev->flags |= DF_DESCMALLOCED;
948 /* Avoid a -Wcast-qual warning */
949 dev->desc = (char *)(uintptr_t) desc;
951 #ifdef DEVICE_SYSCTLS
953 struct sysctl_oid *oid = &dev->oid[1];
954 oid->oid_arg1 = dev->desc ? dev->desc : "";
955 oid->oid_arg2 = dev->desc ? strlen(dev->desc) : 0;
961 device_set_desc(device_t dev, const char* desc)
963 device_set_desc_internal(dev, desc, FALSE);
967 device_set_desc_copy(device_t dev, const char* desc)
969 device_set_desc_internal(dev, desc, TRUE);
973 device_set_flags(device_t dev, u_int32_t flags)
975 dev->devflags = flags;
979 device_get_softc(device_t dev)
985 device_set_softc(device_t dev, void *softc)
987 if (dev->softc && !(dev->flags & DF_EXTERNALSOFTC))
988 free(dev->softc, M_BUS);
991 dev->flags |= DF_EXTERNALSOFTC;
993 dev->flags &= ~DF_EXTERNALSOFTC;
997 device_get_ivars(device_t dev)
1003 device_set_ivars(device_t dev, void * ivars)
1014 device_get_state(device_t dev)
1020 device_enable(device_t dev)
1022 dev->flags |= DF_ENABLED;
1026 device_disable(device_t dev)
1028 dev->flags &= ~DF_ENABLED;
1032 device_busy(device_t dev)
1034 if (dev->state < DS_ATTACHED)
1035 panic("device_busy: called for unattached device");
1036 if (dev->busy == 0 && dev->parent)
1037 device_busy(dev->parent);
1039 dev->state = DS_BUSY;
1043 device_unbusy(device_t dev)
1045 if (dev->state != DS_BUSY)
1046 panic("device_unbusy: called for non-busy device");
1048 if (dev->busy == 0) {
1050 device_unbusy(dev->parent);
1051 dev->state = DS_ATTACHED;
1056 device_quiet(device_t dev)
1058 dev->flags |= DF_QUIET;
1062 device_verbose(device_t dev)
1064 dev->flags &= ~DF_QUIET;
1068 device_is_quiet(device_t dev)
1070 return (dev->flags & DF_QUIET) != 0;
1074 device_is_enabled(device_t dev)
1076 return (dev->flags & DF_ENABLED) != 0;
1080 device_is_alive(device_t dev)
1082 return dev->state >= DS_ALIVE;
1086 device_set_devclass(device_t dev, const char *classname)
1092 devclass_delete_device(dev->devclass, dev);
1096 if (dev->devclass) {
1097 printf("device_set_devclass: device class already set\n");
1101 dc = devclass_find_internal(classname, TRUE);
1105 return devclass_add_device(dc, dev);
1109 device_set_driver(device_t dev, driver_t *driver)
1111 if (dev->state >= DS_ATTACHED)
1114 if (dev->driver == driver)
1117 if (dev->softc && !(dev->flags & DF_EXTERNALSOFTC)) {
1118 free(dev->softc, M_BUS);
1121 dev->ops = &null_ops;
1122 dev->driver = driver;
1124 dev->ops = driver->ops;
1125 if (!(dev->flags & DF_EXTERNALSOFTC)) {
1126 dev->softc = malloc(driver->softc, M_BUS, M_NOWAIT);
1128 dev->ops = &null_ops;
1132 bzero(dev->softc, driver->softc);
1139 device_probe_and_attach(device_t dev)
1141 device_t bus = dev->parent;
1143 int hasclass = (dev->devclass != 0);
1145 if (dev->state >= DS_ALIVE)
1148 if (dev->flags & DF_ENABLED) {
1149 error = device_probe_child(bus, dev);
1151 if (!device_is_quiet(dev))
1152 device_print_child(bus, dev);
1153 error = DEVICE_ATTACH(dev);
1155 dev->state = DS_ATTACHED;
1157 printf("device_probe_and_attach: %s%d attach returned %d\n",
1158 dev->driver->name, dev->unit, error);
1159 /* Unset the class that was set in device_probe_child */
1161 device_set_devclass(dev, 0);
1162 device_set_driver(dev, NULL);
1163 dev->state = DS_NOTPRESENT;
1166 if (!(dev->flags & DF_DONENOMATCH)) {
1167 BUS_PROBE_NOMATCH(bus, dev);
1168 dev->flags |= DF_DONENOMATCH;
1173 device_print_prettyname(dev);
1174 printf("not probed (disabled)\n");
1182 device_detach(device_t dev)
1186 PDEBUG(("%s", DEVICENAME(dev)));
1187 if (dev->state == DS_BUSY)
1189 if (dev->state != DS_ATTACHED)
1192 if ((error = DEVICE_DETACH(dev)) != 0)
1194 device_printf(dev, "detached\n");
1196 BUS_CHILD_DETACHED(dev->parent, dev);
1198 if (!(dev->flags & DF_FIXEDCLASS))
1199 devclass_delete_device(dev->devclass, dev);
1201 dev->state = DS_NOTPRESENT;
1202 device_set_driver(dev, NULL);
1208 device_shutdown(device_t dev)
1210 if (dev->state < DS_ATTACHED)
1212 return DEVICE_SHUTDOWN(dev);
1216 device_set_unit(device_t dev, int unit)
1221 dc = device_get_devclass(dev);
1222 if (unit < dc->maxunit && dc->devices[unit])
1224 err = devclass_delete_device(dc, dev);
1228 err = devclass_add_device(dc, dev);
1234 #ifdef DEVICE_SYSCTLS
1237 * Sysctl nodes for devices.
1240 SYSCTL_NODE(_hw, OID_AUTO, devices, CTLFLAG_RW, 0, "A list of all devices");
1243 sysctl_handle_children(SYSCTL_HANDLER_ARGS)
1245 device_t dev = arg1;
1247 int first = 1, error = 0;
1249 for (child = TAILQ_FIRST(&dev->children); child;
1250 child = TAILQ_NEXT(child, link)) {
1251 if (child->nameunit) {
1253 error = SYSCTL_OUT(req, ",", 1);
1254 if (error) return error;
1258 error = SYSCTL_OUT(req, child->nameunit, strlen(child->nameunit));
1259 if (error) return error;
1263 error = SYSCTL_OUT(req, "", 1);
1269 sysctl_handle_state(SYSCTL_HANDLER_ARGS)
1271 device_t dev = arg1;
1273 switch (dev->state) {
1275 return SYSCTL_OUT(req, "notpresent", sizeof("notpresent"));
1277 return SYSCTL_OUT(req, "alive", sizeof("alive"));
1279 return SYSCTL_OUT(req, "attached", sizeof("attached"));
1281 return SYSCTL_OUT(req, "busy", sizeof("busy"));
1288 device_register_oids(device_t dev)
1290 struct sysctl_oid* oid;
1293 bzero(oid, sizeof(*oid));
1294 oid->oid_parent = &sysctl__hw_devices_children;
1295 oid->oid_number = OID_AUTO;
1296 oid->oid_kind = CTLTYPE_NODE | CTLFLAG_RW;
1297 oid->oid_arg1 = &dev->oidlist[0];
1299 oid->oid_name = dev->nameunit;
1300 oid->oid_handler = 0;
1302 SLIST_INIT(&dev->oidlist[0]);
1303 sysctl_register_oid(oid);
1306 bzero(oid, sizeof(*oid));
1307 oid->oid_parent = &dev->oidlist[0];
1308 oid->oid_number = OID_AUTO;
1309 oid->oid_kind = CTLTYPE_STRING | CTLFLAG_RD;
1310 oid->oid_arg1 = dev->desc ? dev->desc : "";
1311 oid->oid_arg2 = dev->desc ? strlen(dev->desc) : 0;
1312 oid->oid_name = "desc";
1313 oid->oid_handler = sysctl_handle_string;
1315 sysctl_register_oid(oid);
1318 bzero(oid, sizeof(*oid));
1319 oid->oid_parent = &dev->oidlist[0];
1320 oid->oid_number = OID_AUTO;
1321 oid->oid_kind = CTLTYPE_INT | CTLFLAG_RD;
1322 oid->oid_arg1 = dev;
1324 oid->oid_name = "children";
1325 oid->oid_handler = sysctl_handle_children;
1327 sysctl_register_oid(oid);
1330 bzero(oid, sizeof(*oid));
1331 oid->oid_parent = &dev->oidlist[0];
1332 oid->oid_number = OID_AUTO;
1333 oid->oid_kind = CTLTYPE_INT | CTLFLAG_RD;
1334 oid->oid_arg1 = dev;
1336 oid->oid_name = "state";
1337 oid->oid_handler = sysctl_handle_state;
1339 sysctl_register_oid(oid);
1343 device_unregister_oids(device_t dev)
1345 sysctl_unregister_oid(&dev->oid[0]);
1346 sysctl_unregister_oid(&dev->oid[1]);
1347 sysctl_unregister_oid(&dev->oid[2]);
1352 /*======================================*/
1354 * Access functions for device resources.
1357 /* Supplied by config(8) in ioconf.c */
1358 extern struct config_device config_devtab[];
1359 extern int devtab_count;
1361 /* Runtime version */
1362 struct config_device *devtab = config_devtab;
1365 resource_new_name(const char *name, int unit)
1367 struct config_device *new;
1369 new = malloc((devtab_count + 1) * sizeof(*new), M_TEMP, M_NOWAIT);
1372 if (devtab && devtab_count > 0)
1373 bcopy(devtab, new, devtab_count * sizeof(*new));
1374 bzero(&new[devtab_count], sizeof(*new));
1375 new[devtab_count].name = malloc(strlen(name) + 1, M_TEMP, M_NOWAIT);
1376 if (new[devtab_count].name == NULL) {
1380 strcpy(new[devtab_count].name, name);
1381 new[devtab_count].unit = unit;
1382 new[devtab_count].resource_count = 0;
1383 new[devtab_count].resources = NULL;
1385 return devtab_count++;
1389 resource_new_resname(int j, const char *resname, resource_type type)
1391 struct config_resource *new;
1394 i = devtab[j].resource_count;
1395 new = malloc((i + 1) * sizeof(*new), M_TEMP, M_NOWAIT);
1398 if (devtab[j].resources && i > 0)
1399 bcopy(devtab[j].resources, new, i * sizeof(*new));
1400 bzero(&new[i], sizeof(*new));
1401 new[i].name = malloc(strlen(resname) + 1, M_TEMP, M_NOWAIT);
1402 if (new[i].name == NULL) {
1406 strcpy(new[i].name, resname);
1408 if (devtab[j].resources)
1409 free(devtab[j].resources, M_TEMP);
1410 devtab[j].resources = new;
1411 devtab[j].resource_count = i + 1;
1416 resource_match_string(int i, const char *resname, const char *value)
1419 struct config_resource *res;
1421 for (j = 0, res = devtab[i].resources;
1422 j < devtab[i].resource_count; j++, res++)
1423 if (!strcmp(res->name, resname)
1424 && res->type == RES_STRING
1425 && !strcmp(res->u.stringval, value))
1431 resource_find(const char *name, int unit, const char *resname,
1432 struct config_resource **result)
1435 struct config_resource *res;
1438 * First check specific instances, then generic.
1440 for (i = 0; i < devtab_count; i++) {
1441 if (devtab[i].unit < 0)
1443 if (!strcmp(devtab[i].name, name) && devtab[i].unit == unit) {
1444 res = devtab[i].resources;
1445 for (j = 0; j < devtab[i].resource_count; j++, res++)
1446 if (!strcmp(res->name, resname)) {
1452 for (i = 0; i < devtab_count; i++) {
1453 if (devtab[i].unit >= 0)
1455 /* XXX should this `&& devtab[i].unit == unit' be here? */
1456 /* XXX if so, then the generic match does nothing */
1457 if (!strcmp(devtab[i].name, name) && devtab[i].unit == unit) {
1458 res = devtab[i].resources;
1459 for (j = 0; j < devtab[i].resource_count; j++, res++)
1460 if (!strcmp(res->name, resname)) {
1470 resource_int_value(const char *name, int unit, const char *resname, int *result)
1473 struct config_resource *res;
1475 if ((error = resource_find(name, unit, resname, &res)) != 0)
1477 if (res->type != RES_INT)
1479 *result = res->u.intval;
1484 resource_long_value(const char *name, int unit, const char *resname,
1488 struct config_resource *res;
1490 if ((error = resource_find(name, unit, resname, &res)) != 0)
1492 if (res->type != RES_LONG)
1494 *result = res->u.longval;
1499 resource_string_value(const char *name, int unit, const char *resname,
1503 struct config_resource *res;
1505 if ((error = resource_find(name, unit, resname, &res)) != 0)
1507 if (res->type != RES_STRING)
1509 *result = res->u.stringval;
1514 resource_query_string(int i, const char *resname, const char *value)
1520 for (; i < devtab_count; i++)
1521 if (resource_match_string(i, resname, value) >= 0)
1527 resource_locate(int i, const char *resname)
1533 for (; i < devtab_count; i++)
1534 if (!strcmp(devtab[i].name, resname))
1540 resource_count(void)
1542 return devtab_count;
1546 resource_query_name(int i)
1548 return devtab[i].name;
1552 resource_query_unit(int i)
1554 return devtab[i].unit;
1558 resource_create(const char *name, int unit, const char *resname,
1559 resource_type type, struct config_resource **result)
1562 struct config_resource *res = NULL;
1564 for (i = 0; i < devtab_count; i++) {
1565 if (!strcmp(devtab[i].name, name) && devtab[i].unit == unit) {
1566 res = devtab[i].resources;
1571 i = resource_new_name(name, unit);
1574 res = devtab[i].resources;
1576 for (j = 0; j < devtab[i].resource_count; j++, res++) {
1577 if (!strcmp(res->name, resname)) {
1582 j = resource_new_resname(i, resname, type);
1585 res = &devtab[i].resources[j];
1591 resource_set_int(const char *name, int unit, const char *resname, int value)
1594 struct config_resource *res;
1596 error = resource_create(name, unit, resname, RES_INT, &res);
1599 if (res->type != RES_INT)
1601 res->u.intval = value;
1606 resource_set_long(const char *name, int unit, const char *resname, long value)
1609 struct config_resource *res;
1611 error = resource_create(name, unit, resname, RES_LONG, &res);
1614 if (res->type != RES_LONG)
1616 res->u.longval = value;
1621 resource_set_string(const char *name, int unit, const char *resname,
1625 struct config_resource *res;
1627 error = resource_create(name, unit, resname, RES_STRING, &res);
1630 if (res->type != RES_STRING)
1632 if (res->u.stringval)
1633 free(res->u.stringval, M_TEMP);
1634 res->u.stringval = malloc(strlen(value) + 1, M_TEMP, M_NOWAIT);
1635 if (res->u.stringval == NULL)
1637 strcpy(res->u.stringval, value);
1643 resource_cfgload(void *dummy __unused)
1645 struct config_resource *res, *cfgres;
1648 char *name, *resname;
1652 int config_devtab_count;
1654 config_devtab_count = devtab_count;
1658 for (i = 0; i < config_devtab_count; i++) {
1659 name = config_devtab[i].name;
1660 unit = config_devtab[i].unit;
1662 for (j = 0; j < config_devtab[i].resource_count; j++) {
1663 cfgres = config_devtab[i].resources;
1664 resname = cfgres[j].name;
1665 type = cfgres[j].type;
1666 error = resource_create(name, unit, resname, type,
1669 printf("create resource %s%d: error %d\n",
1673 if (res->type != type) {
1674 printf("type mismatch %s%d: %d != %d\n",
1675 name, unit, res->type, type);
1680 res->u.intval = cfgres[j].u.intval;
1683 res->u.longval = cfgres[j].u.longval;
1686 if (res->u.stringval)
1687 free(res->u.stringval, M_TEMP);
1688 stringval = cfgres[j].u.stringval;
1689 res->u.stringval = malloc(strlen(stringval) + 1,
1691 if (res->u.stringval == NULL)
1693 strcpy(res->u.stringval, stringval);
1696 panic("unknown resource type %d\n", type);
1701 SYSINIT(cfgload, SI_SUB_KMEM, SI_ORDER_ANY + 50, resource_cfgload, 0)
1704 /*======================================*/
1706 * Some useful method implementations to make life easier for bus drivers.
1710 resource_list_init(struct resource_list *rl)
1716 resource_list_free(struct resource_list *rl)
1718 struct resource_list_entry *rle;
1720 while ((rle = SLIST_FIRST(rl)) != NULL) {
1722 panic("resource_list_free: resource entry is busy");
1723 SLIST_REMOVE_HEAD(rl, link);
1729 resource_list_add(struct resource_list *rl,
1731 u_long start, u_long end, u_long count)
1733 struct resource_list_entry *rle;
1735 rle = resource_list_find(rl, type, rid);
1737 rle = malloc(sizeof(struct resource_list_entry), M_BUS, M_NOWAIT);
1739 panic("resource_list_add: can't record entry");
1740 SLIST_INSERT_HEAD(rl, rle, link);
1747 panic("resource_list_add: resource entry is busy");
1754 struct resource_list_entry*
1755 resource_list_find(struct resource_list *rl,
1758 struct resource_list_entry *rle;
1760 SLIST_FOREACH(rle, rl, link)
1761 if (rle->type == type && rle->rid == rid)
1767 resource_list_delete(struct resource_list *rl,
1770 struct resource_list_entry *rle = resource_list_find(rl, type, rid);
1773 SLIST_REMOVE(rl, rle, resource_list_entry, link);
1779 resource_list_alloc(struct resource_list *rl,
1780 device_t bus, device_t child,
1782 u_long start, u_long end,
1783 u_long count, u_int flags)
1785 struct resource_list_entry *rle = 0;
1786 int passthrough = (device_get_parent(child) != bus);
1787 int isdefault = (start == 0UL && end == ~0UL);
1790 return BUS_ALLOC_RESOURCE(device_get_parent(bus), child,
1792 start, end, count, flags);
1795 rle = resource_list_find(rl, type, *rid);
1798 return 0; /* no resource of that type/rid */
1800 panic("resource_list_alloc: resource entry is busy");
1804 count = max(count, rle->count);
1805 end = max(rle->end, start + count - 1);
1808 rle->res = BUS_ALLOC_RESOURCE(device_get_parent(bus), child,
1809 type, rid, start, end, count, flags);
1812 * Record the new range.
1815 rle->start = rman_get_start(rle->res);
1816 rle->end = rman_get_end(rle->res);
1824 resource_list_release(struct resource_list *rl,
1825 device_t bus, device_t child,
1826 int type, int rid, struct resource *res)
1828 struct resource_list_entry *rle = 0;
1829 int passthrough = (device_get_parent(child) != bus);
1833 return BUS_RELEASE_RESOURCE(device_get_parent(bus), child,
1837 rle = resource_list_find(rl, type, rid);
1840 panic("resource_list_release: can't find resource");
1842 panic("resource_list_release: resource entry is not busy");
1844 error = BUS_RELEASE_RESOURCE(device_get_parent(bus), child,
1854 resource_list_print_type(struct resource_list *rl, const char *name, int type,
1857 struct resource_list_entry *rle;
1858 int printed, retval;
1862 /* Yes, this is kinda cheating */
1863 SLIST_FOREACH(rle, rl, link) {
1864 if (rle->type == type) {
1866 retval += printf(" %s ", name);
1868 retval += printf(",");
1870 retval += printf(format, rle->start);
1871 if (rle->count > 1) {
1872 retval += printf("-");
1873 retval += printf(format, rle->start +
1882 * Call DEVICE_IDENTIFY for each driver.
1885 bus_generic_probe(device_t dev)
1887 devclass_t dc = dev->devclass;
1890 for (dl = TAILQ_FIRST(&dc->drivers); dl; dl = TAILQ_NEXT(dl, link))
1891 DEVICE_IDENTIFY(dl->driver, dev);
1897 bus_generic_attach(device_t dev)
1901 for (child = TAILQ_FIRST(&dev->children);
1902 child; child = TAILQ_NEXT(child, link))
1903 device_probe_and_attach(child);
1909 bus_generic_detach(device_t dev)
1914 if (dev->state != DS_ATTACHED)
1917 for (child = TAILQ_FIRST(&dev->children);
1918 child; child = TAILQ_NEXT(child, link))
1919 if ((error = device_detach(child)) != 0)
1926 bus_generic_shutdown(device_t dev)
1930 for (child = TAILQ_FIRST(&dev->children);
1931 child; child = TAILQ_NEXT(child, link))
1932 device_shutdown(child);
1938 bus_generic_suspend(device_t dev)
1941 device_t child, child2;
1943 for (child = TAILQ_FIRST(&dev->children);
1944 child; child = TAILQ_NEXT(child, link)) {
1945 error = DEVICE_SUSPEND(child);
1947 for (child2 = TAILQ_FIRST(&dev->children);
1948 child2 && child2 != child;
1949 child2 = TAILQ_NEXT(child2, link))
1950 DEVICE_RESUME(child2);
1958 bus_generic_resume(device_t dev)
1962 for (child = TAILQ_FIRST(&dev->children);
1963 child; child = TAILQ_NEXT(child, link)) {
1964 DEVICE_RESUME(child);
1965 /* if resume fails, there's nothing we can usefully do... */
1971 bus_print_child_header (device_t dev, device_t child)
1975 if (device_get_desc(child)) {
1976 retval += device_printf(child, "<%s>",
1977 device_get_desc(child));
1979 retval += printf("%s", device_get_nameunit(child));
1986 bus_print_child_footer (device_t dev, device_t child)
1988 return(printf(" on %s\n", device_get_nameunit(dev)));
1992 bus_generic_print_child(device_t dev, device_t child)
1996 retval += bus_print_child_header(dev, child);
1997 retval += bus_print_child_footer(dev, child);
2003 bus_generic_read_ivar(device_t dev, device_t child, int index,
2010 bus_generic_write_ivar(device_t dev, device_t child, int index,
2017 bus_generic_driver_added(device_t dev, driver_t *driver)
2021 DEVICE_IDENTIFY(driver, dev);
2022 for (child = TAILQ_FIRST(&dev->children);
2023 child; child = TAILQ_NEXT(child, link))
2024 if (child->state == DS_NOTPRESENT)
2025 device_probe_and_attach(child);
2029 bus_generic_setup_intr(device_t dev, device_t child, struct resource *irq,
2030 int flags, driver_intr_t *intr, void *arg,
2033 /* Propagate up the bus hierarchy until someone handles it. */
2035 return (BUS_SETUP_INTR(dev->parent, child, irq, flags,
2036 intr, arg, cookiep));
2042 bus_generic_teardown_intr(device_t dev, device_t child, struct resource *irq,
2045 /* Propagate up the bus hierarchy until someone handles it. */
2047 return (BUS_TEARDOWN_INTR(dev->parent, child, irq, cookie));
2053 bus_generic_alloc_resource(device_t dev, device_t child, int type, int *rid,
2054 u_long start, u_long end, u_long count, u_int flags)
2056 /* Propagate up the bus hierarchy until someone handles it. */
2058 return (BUS_ALLOC_RESOURCE(dev->parent, child, type, rid,
2059 start, end, count, flags));
2065 bus_generic_release_resource(device_t dev, device_t child, int type, int rid,
2068 /* Propagate up the bus hierarchy until someone handles it. */
2070 return (BUS_RELEASE_RESOURCE(dev->parent, child, type, rid,
2077 bus_generic_activate_resource(device_t dev, device_t child, int type, int rid,
2080 /* Propagate up the bus hierarchy until someone handles it. */
2082 return (BUS_ACTIVATE_RESOURCE(dev->parent, child, type, rid,
2089 bus_generic_deactivate_resource(device_t dev, device_t child, int type,
2090 int rid, struct resource *r)
2092 /* Propagate up the bus hierarchy until someone handles it. */
2094 return (BUS_DEACTIVATE_RESOURCE(dev->parent, child, type, rid,
2101 * Some convenience functions to make it easier for drivers to use the
2102 * resource-management functions. All these really do is hide the
2103 * indirection through the parent's method table, making for slightly
2104 * less-wordy code. In the future, it might make sense for this code
2105 * to maintain some sort of a list of resources allocated by each device.
2108 bus_alloc_resource(device_t dev, int type, int *rid, u_long start, u_long end,
2109 u_long count, u_int flags)
2111 if (dev->parent == 0)
2113 return (BUS_ALLOC_RESOURCE(dev->parent, dev, type, rid, start, end,
2118 bus_activate_resource(device_t dev, int type, int rid, struct resource *r)
2120 if (dev->parent == 0)
2122 return (BUS_ACTIVATE_RESOURCE(dev->parent, dev, type, rid, r));
2126 bus_deactivate_resource(device_t dev, int type, int rid, struct resource *r)
2128 if (dev->parent == 0)
2130 return (BUS_DEACTIVATE_RESOURCE(dev->parent, dev, type, rid, r));
2134 bus_release_resource(device_t dev, int type, int rid, struct resource *r)
2136 if (dev->parent == 0)
2138 return (BUS_RELEASE_RESOURCE(dev->parent, dev,
2143 bus_setup_intr(device_t dev, struct resource *r, int flags,
2144 driver_intr_t handler, void *arg, void **cookiep)
2146 if (dev->parent == 0)
2148 return (BUS_SETUP_INTR(dev->parent, dev, r, flags,
2149 handler, arg, cookiep));
2153 bus_teardown_intr(device_t dev, struct resource *r, void *cookie)
2155 if (dev->parent == 0)
2157 return (BUS_TEARDOWN_INTR(dev->parent, dev, r, cookie));
2161 bus_set_resource(device_t dev, int type, int rid,
2162 u_long start, u_long count)
2164 return BUS_SET_RESOURCE(device_get_parent(dev), dev, type, rid,
2169 bus_get_resource(device_t dev, int type, int rid,
2170 u_long *startp, u_long *countp)
2172 return BUS_GET_RESOURCE(device_get_parent(dev), dev, type, rid,
2177 bus_get_resource_start(device_t dev, int type, int rid)
2179 u_long start, count;
2182 error = BUS_GET_RESOURCE(device_get_parent(dev), dev, type, rid,
2190 bus_get_resource_count(device_t dev, int type, int rid)
2192 u_long start, count;
2195 error = BUS_GET_RESOURCE(device_get_parent(dev), dev, type, rid,
2203 bus_delete_resource(device_t dev, int type, int rid)
2205 BUS_DELETE_RESOURCE(device_get_parent(dev), dev, type, rid);
2209 root_print_child(device_t dev, device_t child)
2215 root_setup_intr(device_t dev, device_t child, driver_intr_t *intr, void *arg,
2219 * If an interrupt mapping gets to here something bad has happened.
2221 panic("root_setup_intr");
2224 static device_method_t root_methods[] = {
2225 /* Device interface */
2226 DEVMETHOD(device_shutdown, bus_generic_shutdown),
2227 DEVMETHOD(device_suspend, bus_generic_suspend),
2228 DEVMETHOD(device_resume, bus_generic_resume),
2231 DEVMETHOD(bus_print_child, root_print_child),
2232 DEVMETHOD(bus_read_ivar, bus_generic_read_ivar),
2233 DEVMETHOD(bus_write_ivar, bus_generic_write_ivar),
2234 DEVMETHOD(bus_setup_intr, root_setup_intr),
2239 static driver_t root_driver = {
2246 devclass_t root_devclass;
2249 root_bus_module_handler(module_t mod, int what, void* arg)
2253 compile_methods(&root_driver);
2254 root_bus = make_device(NULL, "root", 0);
2255 root_bus->desc = "System root bus";
2256 root_bus->ops = root_driver.ops;
2257 root_bus->driver = &root_driver;
2258 root_bus->state = DS_ATTACHED;
2259 root_devclass = devclass_find_internal("root", FALSE);
2263 device_shutdown(root_bus);
2270 static moduledata_t root_bus_mod = {
2272 root_bus_module_handler,
2275 DECLARE_MODULE(rootbus, root_bus_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST);
2278 root_bus_configure(void)
2284 for (dev = TAILQ_FIRST(&root_bus->children); dev;
2285 dev = TAILQ_NEXT(dev, link)) {
2286 device_probe_and_attach(dev);
2291 driver_module_handler(module_t mod, int what, void *arg)
2294 struct driver_module_data *dmd;
2295 devclass_t bus_devclass;
2297 dmd = (struct driver_module_data *)arg;
2298 bus_devclass = devclass_find_internal(dmd->dmd_busname, TRUE);
2303 if (dmd->dmd_chainevh)
2304 error = dmd->dmd_chainevh(mod,what,dmd->dmd_chainarg);
2306 for (i = 0; !error && i < dmd->dmd_ndrivers; i++) {
2307 PDEBUG(("Loading module: driver %s on bus %s",
2308 DRIVERNAME(dmd->dmd_drivers[i]),
2310 error = devclass_add_driver(bus_devclass,
2311 dmd->dmd_drivers[i]);
2317 * The drivers loaded in this way are assumed to all
2318 * implement the same devclass.
2320 *dmd->dmd_devclass =
2321 devclass_find_internal(dmd->dmd_drivers[0]->name,
2326 for (i = 0; !error && i < dmd->dmd_ndrivers; i++) {
2327 PDEBUG(("Unloading module: driver %s from bus %s",
2328 DRIVERNAME(dmd->dmd_drivers[i]),
2330 error = devclass_delete_driver(bus_devclass,
2331 dmd->dmd_drivers[i]);
2334 if (!error && dmd->dmd_chainevh)
2335 error = dmd->dmd_chainevh(mod,what,dmd->dmd_chainarg);
2344 /* the _short versions avoid iteration by not calling anything that prints
2345 * more than oneliners. I love oneliners.
2349 print_method_list(device_method_t *m, int indent)
2356 for (i = 0; m->desc; i++, m++)
2357 indentprintf(("method %d: %s, offset=%d\n",
2358 i, m->desc->name, m->desc->offset));
2362 print_device_ops(device_ops_t ops, int indent)
2370 /* we present a list of the methods that are pointing to the
2371 * error_method, but ignore the 0'th elements; it is always
2374 for (i = 1; i < ops->maxoffset; i++) {
2375 if (ops->methods[i] == error_method) {
2377 indentprintf(("error_method:"));
2385 indentprintf(("(%d method%s, %d valid, %d error_method%s)\n",
2386 ops->maxoffset-1, (ops->maxoffset-1 == 1? "":"s"),
2387 ops->maxoffset-1-count,
2388 count, (count == 1? "":"'s")));
2392 print_device_short(device_t dev, int indent)
2397 indentprintf(("device %d: <%s> %sparent,%schildren,%s%s%s%s,%sivars,%ssoftc,busy=%d\n",
2398 dev->unit, dev->desc,
2399 (dev->parent? "":"no "),
2400 (TAILQ_EMPTY(&dev->children)? "no ":""),
2401 (dev->flags&DF_ENABLED? "enabled,":"disabled,"),
2402 (dev->flags&DF_FIXEDCLASS? "fixed,":""),
2403 (dev->flags&DF_WILDCARD? "wildcard,":""),
2404 (dev->flags&DF_DESCMALLOCED? "descmalloced,":""),
2405 (dev->ivars? "":"no "),
2406 (dev->softc? "":"no "),
2411 print_device(device_t dev, int indent)
2416 print_device_short(dev, indent);
2418 indentprintf(("Parent:\n"));
2419 print_device_short(dev->parent, indent+1);
2420 indentprintf(("Methods:\n"));
2421 print_device_ops(dev->ops, indent+1);
2422 indentprintf(("Driver:\n"));
2423 print_driver_short(dev->driver, indent+1);
2424 indentprintf(("Devclass:\n"));
2425 print_devclass_short(dev->devclass, indent+1);
2429 print_device_tree_short(device_t dev, int indent)
2430 /* print the device and all its children (indented) */
2437 print_device_short(dev, indent);
2439 for (child = TAILQ_FIRST(&dev->children); child;
2440 child = TAILQ_NEXT(child, link))
2441 print_device_tree_short(child, indent+1);
2445 print_device_tree(device_t dev, int indent)
2446 /* print the device and all its children (indented) */
2453 print_device(dev, indent);
2455 for (child = TAILQ_FIRST(&dev->children); child;
2456 child = TAILQ_NEXT(child, link))
2457 print_device_tree(child, indent+1);
2461 print_driver_short(driver_t *driver, int indent)
2466 indentprintf(("driver %s: softc size = %d\n",
2467 driver->name, driver->softc));
2471 print_driver(driver_t *driver, int indent)
2476 print_driver_short(driver, indent);
2477 indentprintf(("Methods:\n"));
2478 print_method_list(driver->methods, indent+1);
2479 indentprintf(("Operations:\n"));
2480 print_device_ops(driver->ops, indent+1);
2485 print_driver_list(driver_list_t drivers, int indent)
2487 driverlink_t driver;
2489 for (driver = TAILQ_FIRST(&drivers); driver;
2490 driver = TAILQ_NEXT(driver, link))
2491 print_driver(driver->driver, indent);
2495 print_devclass_short(devclass_t dc, int indent)
2500 indentprintf(("devclass %s: max units = %d\n",
2501 dc->name, dc->maxunit));
2505 print_devclass(devclass_t dc, int indent)
2512 print_devclass_short(dc, indent);
2513 indentprintf(("Drivers:\n"));
2514 print_driver_list(dc->drivers, indent+1);
2516 indentprintf(("Devices:\n"));
2517 for (i = 0; i < dc->maxunit; i++)
2519 print_device(dc->devices[i], indent+1);
2523 print_devclass_list_short(void)
2527 printf("Short listing of devclasses, drivers & devices:\n");
2528 for (dc = TAILQ_FIRST(&devclasses); dc; dc = TAILQ_NEXT(dc, link))
2529 print_devclass_short(dc, 0);
2533 print_devclass_list(void)
2537 printf("Full listing of devclasses, drivers & devices:\n");
2538 for (dc = TAILQ_FIRST(&devclasses); dc; dc = TAILQ_NEXT(dc, link))
2539 print_devclass(dc, 0);