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subr_bus.c
Revision
1.16:
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Thu Apr 1 08:41:24 2004 UTC (9 years, 1 month ago) by
joerg
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MAIN
CVS tags:
HEAD
KObj extension stage I/III
Isolate the reference counting for kobj classes in special functions to
allow clean locking in the next step.
Merge all calls of kobj_class_compile either into the new
kobj_class_instantiate or into kobj_init and make it static. Same for
kobj_class_free.
Remove kobj_class_compile_static, it wasn't used and is pretty pointless
since the kobj framework is not used before the VM subsystem has been
initialized.
1: /*
2: * Copyright (c) 1997,1998 Doug Rabson
3: * All rights reserved.
4: *
5: * Redistribution and use in source and binary forms, with or without
6: * modification, are permitted provided that the following conditions
7: * are met:
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.
13: *
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
24: * SUCH DAMAGE.
25: *
26: * $FreeBSD: src/sys/kern/subr_bus.c,v 1.54.2.9 2002/10/10 15:13:32 jhb Exp $
27: * $DragonFly: src/sys/kern/subr_bus.c,v 1.16 2004/04/01 08:41:24 joerg Exp $
28: */
29:
30: #include "opt_bus.h"
31:
32: #include <sys/param.h>
33: #include <sys/queue.h>
34: #include <sys/malloc.h>
35: #include <sys/kernel.h>
36: #include <sys/module.h>
37: #ifdef DEVICE_SYSCTLS
38: #include <sys/sysctl.h>
39: #endif
40: #include <sys/kobj.h>
41: #include <sys/bus_private.h>
42: #include <sys/systm.h>
43: #include <machine/bus.h>
44: #include <sys/rman.h>
45: #include <machine/stdarg.h> /* for device_printf() */
46:
47: MALLOC_DEFINE(M_BUS, "bus", "Bus data structures");
48:
49: #ifdef BUS_DEBUG
50: #define PDEBUG(a) (printf(__FUNCTION__ ":%d: ", __LINE__), printf a, printf("\n"))
51: #define DEVICENAME(d) ((d)? device_get_name(d): "no device")
52: #define DRIVERNAME(d) ((d)? d->name : "no driver")
53: #define DEVCLANAME(d) ((d)? d->name : "no devclass")
54:
55: /* Produce the indenting, indent*2 spaces plus a '.' ahead of that to
56: * prevent syslog from deleting initial spaces
57: */
58: #define indentprintf(p) do { int iJ; printf("."); for (iJ=0; iJ<indent; iJ++) printf(" "); printf p ; } while(0)
59:
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);
71:
72: #else
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 */
78:
79: #define print_device_short(d,i) /* nop */
80: #define print_device(d,i) /* nop */
81: #define print_device_tree_short(d,i) /* nop */
82: #define print_device_tree(d,i) /* nop */
83: #define print_driver_short(d,i) /* nop */
84: #define print_driver(d,i) /* nop */
85: #define print_driver_list(d,i) /* nop */
86: #define print_devclass_short(d,i) /* nop */
87: #define print_devclass(d,i) /* nop */
88: #define print_devclass_list_short() /* nop */
89: #define print_devclass_list() /* nop */
90: #endif
91:
92: #ifdef DEVICE_SYSCTLS
93: static void device_register_oids(device_t dev);
94: static void device_unregister_oids(device_t dev);
95: #endif
96:
97: kobj_method_t null_methods[] = {
98: { 0, 0 }
99: };
100:
101: DEFINE_CLASS(null, null_methods, 0);
102:
103: /*
104: * Devclass implementation
105: */
106:
107: static devclass_list_t devclasses = TAILQ_HEAD_INITIALIZER(devclasses);
108:
109: static devclass_t
110: devclass_find_internal(const char *classname, int create)
111: {
112: devclass_t dc;
113:
114: PDEBUG(("looking for %s", classname));
115: if (classname == NULL)
116: return(NULL);
117:
118: TAILQ_FOREACH(dc, &devclasses, link)
119: if (!strcmp(dc->name, classname))
120: return(dc);
121:
122: PDEBUG(("%s not found%s", classname, (create? ", creating": "")));
123: if (create) {
124: dc = malloc(sizeof(struct devclass) + strlen(classname) + 1,
125: M_BUS, M_INTWAIT | M_ZERO);
126: if (!dc)
127: return NULL;
128: dc->name = (char*) (dc + 1);
129: strcpy(dc->name, classname);
130: dc->devices = NULL;
131: dc->maxunit = 0;
132: TAILQ_INIT(&dc->drivers);
133: TAILQ_INSERT_TAIL(&devclasses, dc, link);
134: }
135:
136: return(dc);
137: }
138:
139: devclass_t
140: devclass_create(const char *classname)
141: {
142: return(devclass_find_internal(classname, TRUE));
143: }
144:
145: devclass_t
146: devclass_find(const char *classname)
147: {
148: return(devclass_find_internal(classname, FALSE));
149: }
150:
151: int
152: devclass_add_driver(devclass_t dc, driver_t *driver)
153: {
154: driverlink_t dl;
155: int i;
156:
157: PDEBUG(("%s", DRIVERNAME(driver)));
158:
159: dl = malloc(sizeof *dl, M_BUS, M_INTWAIT | M_ZERO);
160: if (!dl)
161: return(ENOMEM);
162:
163: /*
164: * Compile the driver's methods. Also increase the reference count
165: * so that the class doesn't get freed when the last instance
166: * goes. This means we can safely use static methods and avoids a
167: * double-free in devclass_delete_driver.
168: */
169: kobj_class_instantiate(driver);
170:
171: /*
172: * Make sure the devclass which the driver is implementing exists.
173: */
174: devclass_find_internal(driver->name, TRUE);
175:
176: dl->driver = driver;
177: TAILQ_INSERT_TAIL(&dc->drivers, dl, link);
178:
179: /*
180: * Call BUS_DRIVER_ADDED for any existing busses in this class.
181: */
182: for (i = 0; i < dc->maxunit; i++)
183: if (dc->devices[i])
184: BUS_DRIVER_ADDED(dc->devices[i], driver);
185:
186: return(0);
187: }
188:
189: int
190: devclass_delete_driver(devclass_t busclass, driver_t *driver)
191: {
192: devclass_t dc = devclass_find(driver->name);
193: driverlink_t dl;
194: device_t dev;
195: int i;
196: int error;
197:
198: PDEBUG(("%s from devclass %s", driver->name, DEVCLANAME(busclass)));
199:
200: if (!dc)
201: return(0);
202:
203: /*
204: * Find the link structure in the bus' list of drivers.
205: */
206: TAILQ_FOREACH(dl, &busclass->drivers, link)
207: if (dl->driver == driver)
208: break;
209:
210: if (!dl) {
211: PDEBUG(("%s not found in %s list", driver->name, busclass->name));
212: return(ENOENT);
213: }
214:
215: /*
216: * Disassociate from any devices. We iterate through all the
217: * devices in the devclass of the driver and detach any which are
218: * using the driver and which have a parent in the devclass which
219: * we are deleting from.
220: *
221: * Note that since a driver can be in multiple devclasses, we
222: * should not detach devices which are not children of devices in
223: * the affected devclass.
224: */
225: for (i = 0; i < dc->maxunit; i++)
226: if (dc->devices[i]) {
227: dev = dc->devices[i];
228: if (dev->driver == driver && dev->parent &&
229: dev->parent->devclass == busclass) {
230: if ((error = device_detach(dev)) != 0)
231: return(error);
232: device_set_driver(dev, NULL);
233: }
234: }
235:
236: TAILQ_REMOVE(&busclass->drivers, dl, link);
237: free(dl, M_BUS);
238:
239: kobj_class_uninstantiate(driver);
240:
241: return(0);
242: }
243:
244: static driverlink_t
245: devclass_find_driver_internal(devclass_t dc, const char *classname)
246: {
247: driverlink_t dl;
248:
249: PDEBUG(("%s in devclass %s", classname, DEVCLANAME(dc)));
250:
251: TAILQ_FOREACH(dl, &dc->drivers, link)
252: if (!strcmp(dl->driver->name, classname))
253: return(dl);
254:
255: PDEBUG(("not found"));
256: return(NULL);
257: }
258:
259: driver_t *
260: devclass_find_driver(devclass_t dc, const char *classname)
261: {
262: driverlink_t dl;
263:
264: dl = devclass_find_driver_internal(dc, classname);
265: if (dl)
266: return(dl->driver);
267: else
268: return(NULL);
269: }
270:
271: const char *
272: devclass_get_name(devclass_t dc)
273: {
274: return(dc->name);
275: }
276:
277: device_t
278: devclass_get_device(devclass_t dc, int unit)
279: {
280: if (dc == NULL || unit < 0 || unit >= dc->maxunit)
281: return(NULL);
282: return(dc->devices[unit]);
283: }
284:
285: void *
286: devclass_get_softc(devclass_t dc, int unit)
287: {
288: device_t dev;
289:
290: dev = devclass_get_device(dc, unit);
291: if (!dev)
292: return(NULL);
293:
294: return(device_get_softc(dev));
295: }
296:
297: int
298: devclass_get_devices(devclass_t dc, device_t **devlistp, int *devcountp)
299: {
300: int i;
301: int count;
302: device_t *list;
303:
304: count = 0;
305: for (i = 0; i < dc->maxunit; i++)
306: if (dc->devices[i])
307: count++;
308:
309: list = malloc(count * sizeof(device_t), M_TEMP, M_INTWAIT | M_ZERO);
310: if (list == NULL)
311: return(ENOMEM);
312:
313: count = 0;
314: for (i = 0; i < dc->maxunit; i++)
315: if (dc->devices[i]) {
316: list[count] = dc->devices[i];
317: count++;
318: }
319:
320: *devlistp = list;
321: *devcountp = count;
322:
323: return(0);
324: }
325:
326: int
327: devclass_get_maxunit(devclass_t dc)
328: {
329: return(dc->maxunit);
330: }
331:
332: static int
333: devclass_alloc_unit(devclass_t dc, int *unitp)
334: {
335: int unit = *unitp;
336:
337: PDEBUG(("unit %d in devclass %s", unit, DEVCLANAME(dc)));
338:
339: /* If we have been given a wired unit number, check for existing device */
340: if (unit != -1) {
341: if (unit >= 0 && unit < dc->maxunit &&
342: dc->devices[unit] != NULL) {
343: if (bootverbose)
344: printf("%s-: %s%d exists, using next available unit number\n",
345: dc->name, dc->name, unit);
346: /* find the next available slot */
347: while (++unit < dc->maxunit && dc->devices[unit] != NULL)
348: ;
349: }
350: } else {
351: /* Unwired device, find the next available slot for it */
352: unit = 0;
353: while (unit < dc->maxunit && dc->devices[unit] != NULL)
354: unit++;
355: }
356:
357: /*
358: * We've selected a unit beyond the length of the table, so let's
359: * extend the table to make room for all units up to and including
360: * this one.
361: */
362: if (unit >= dc->maxunit) {
363: device_t *newlist;
364: int newsize;
365:
366: newsize = roundup((unit + 1), MINALLOCSIZE / sizeof(device_t));
367: newlist = malloc(sizeof(device_t) * newsize, M_BUS,
368: M_INTWAIT | M_ZERO);
369: if (newlist == NULL)
370: return(ENOMEM);
371: bcopy(dc->devices, newlist, sizeof(device_t) * dc->maxunit);
372: if (dc->devices)
373: free(dc->devices, M_BUS);
374: dc->devices = newlist;
375: dc->maxunit = newsize;
376: }
377: PDEBUG(("now: unit %d in devclass %s", unit, DEVCLANAME(dc)));
378:
379: *unitp = unit;
380: return(0);
381: }
382:
383: static int
384: devclass_add_device(devclass_t dc, device_t dev)
385: {
386: int buflen, error;
387:
388: PDEBUG(("%s in devclass %s", DEVICENAME(dev), DEVCLANAME(dc)));
389:
390: buflen = strlen(dc->name) + 5;
391: dev->nameunit = malloc(buflen, M_BUS, M_INTWAIT | M_ZERO);
392: if (!dev->nameunit)
393: return(ENOMEM);
394:
395: if ((error = devclass_alloc_unit(dc, &dev->unit)) != 0) {
396: free(dev->nameunit, M_BUS);
397: dev->nameunit = NULL;
398: return(error);
399: }
400: dc->devices[dev->unit] = dev;
401: dev->devclass = dc;
402: snprintf(dev->nameunit, buflen, "%s%d", dc->name, dev->unit);
403:
404: #ifdef DEVICE_SYSCTLS
405: device_register_oids(dev);
406: #endif
407:
408: return(0);
409: }
410:
411: static int
412: devclass_delete_device(devclass_t dc, device_t dev)
413: {
414: if (!dc || !dev)
415: return(0);
416:
417: PDEBUG(("%s in devclass %s", DEVICENAME(dev), DEVCLANAME(dc)));
418:
419: if (dev->devclass != dc || dc->devices[dev->unit] != dev)
420: panic("devclass_delete_device: inconsistent device class");
421: dc->devices[dev->unit] = NULL;
422: if (dev->flags & DF_WILDCARD)
423: dev->unit = -1;
424: dev->devclass = NULL;
425: free(dev->nameunit, M_BUS);
426: dev->nameunit = NULL;
427:
428: #ifdef DEVICE_SYSCTLS
429: device_unregister_oids(dev);
430: #endif
431:
432: return(0);
433: }
434:
435: static device_t
436: make_device(device_t parent, const char *name, int unit)
437: {
438: device_t dev;
439: devclass_t dc;
440:
441: PDEBUG(("%s at %s as unit %d", name, DEVICENAME(parent), unit));
442:
443: if (name != NULL) {
444: dc = devclass_find_internal(name, TRUE);
445: if (!dc) {
446: printf("make_device: can't find device class %s\n", name);
447: return(NULL);
448: }
449: } else
450: dc = NULL;
451:
452: dev = malloc(sizeof(struct device), M_BUS, M_INTWAIT | M_ZERO);
453: if (!dev)
454: return(0);
455:
456: dev->parent = parent;
457: TAILQ_INIT(&dev->children);
458: kobj_init((kobj_t) dev, &null_class);
459: dev->driver = NULL;
460: dev->devclass = NULL;
461: dev->unit = unit;
462: dev->nameunit = NULL;
463: dev->desc = NULL;
464: dev->busy = 0;
465: dev->devflags = 0;
466: dev->flags = DF_ENABLED;
467: dev->order = 0;
468: if (unit == -1)
469: dev->flags |= DF_WILDCARD;
470: if (name) {
471: dev->flags |= DF_FIXEDCLASS;
472: if (devclass_add_device(dc, dev) != 0) {
473: kobj_delete((kobj_t)dev, M_BUS);
474: return(NULL);
475: }
476: }
477: dev->ivars = NULL;
478: dev->softc = NULL;
479:
480: dev->state = DS_NOTPRESENT;
481:
482: return(dev);
483: }
484:
485: static int
486: device_print_child(device_t dev, device_t child)
487: {
488: int retval = 0;
489:
490: if (device_is_alive(child))
491: retval += BUS_PRINT_CHILD(dev, child);
492: else
493: retval += device_printf(child, " not found\n");
494:
495: return(retval);
496: }
497:
498: device_t
499: device_add_child(device_t dev, const char *name, int unit)
500: {
501: return device_add_child_ordered(dev, 0, name, unit);
502: }
503:
504: device_t
505: device_add_child_ordered(device_t dev, int order, const char *name, int unit)
506: {
507: device_t child;
508: device_t place;
509:
510: PDEBUG(("%s at %s with order %d as unit %d", name, DEVICENAME(dev),
511: order, unit));
512:
513: child = make_device(dev, name, unit);
514: if (child == NULL)
515: return child;
516: child->order = order;
517:
518: TAILQ_FOREACH(place, &dev->children, link)
519: if (place->order > order)
520: break;
521:
522: if (place) {
523: /*
524: * The device 'place' is the first device whose order is
525: * greater than the new child.
526: */
527: TAILQ_INSERT_BEFORE(place, child, link);
528: } else {
529: /*
530: * The new child's order is greater or equal to the order of
531: * any existing device. Add the child to the tail of the list.
532: */
533: TAILQ_INSERT_TAIL(&dev->children, child, link);
534: }
535:
536: return(child);
537: }
538:
539: int
540: device_delete_child(device_t dev, device_t child)
541: {
542: int error;
543: device_t grandchild;
544:
545: PDEBUG(("%s from %s", DEVICENAME(child), DEVICENAME(dev)));
546:
547: /* remove children first */
548: while ( (grandchild = TAILQ_FIRST(&child->children)) ) {
549: error = device_delete_child(child, grandchild);
550: if (error)
551: return(error);
552: }
553:
554: if ((error = device_detach(child)) != 0)
555: return(error);
556: if (child->devclass)
557: devclass_delete_device(child->devclass, child);
558: TAILQ_REMOVE(&dev->children, child, link);
559: device_set_desc(child, NULL);
560: kobj_delete((kobj_t)child, M_BUS);
561:
562: return(0);
563: }
564:
565: /*
566: * Find only devices attached to this bus.
567: */
568: device_t
569: device_find_child(device_t dev, const char *classname, int unit)
570: {
571: devclass_t dc;
572: device_t child;
573:
574: dc = devclass_find(classname);
575: if (!dc)
576: return(NULL);
577:
578: child = devclass_get_device(dc, unit);
579: if (child && child->parent == dev)
580: return(child);
581: return(NULL);
582: }
583:
584: static driverlink_t
585: first_matching_driver(devclass_t dc, device_t dev)
586: {
587: if (dev->devclass)
588: return(devclass_find_driver_internal(dc, dev->devclass->name));
589: else
590: return(TAILQ_FIRST(&dc->drivers));
591: }
592:
593: static driverlink_t
594: next_matching_driver(devclass_t dc, device_t dev, driverlink_t last)
595: {
596: if (dev->devclass) {
597: driverlink_t dl;
598: for (dl = TAILQ_NEXT(last, link); dl; dl = TAILQ_NEXT(dl, link))
599: if (!strcmp(dev->devclass->name, dl->driver->name))
600: return(dl);
601: return(NULL);
602: } else
603: return(TAILQ_NEXT(last, link));
604: }
605:
606: static int
607: device_probe_child(device_t dev, device_t child)
608: {
609: devclass_t dc;
610: driverlink_t best = 0;
611: driverlink_t dl;
612: int result, pri = 0;
613: int hasclass = (child->devclass != 0);
614:
615: dc = dev->devclass;
616: if (!dc)
617: panic("device_probe_child: parent device has no devclass");
618:
619: if (child->state == DS_ALIVE)
620: return(0);
621:
622: for (dl = first_matching_driver(dc, child); dl;
623: dl = next_matching_driver(dc, child, dl)) {
624: PDEBUG(("Trying %s", DRIVERNAME(dl->driver)));
625: device_set_driver(child, dl->driver);
626: if (!hasclass)
627: device_set_devclass(child, dl->driver->name);
628: result = DEVICE_PROBE(child);
629: if (!hasclass)
630: device_set_devclass(child, 0);
631:
632: /*
633: * If the driver returns SUCCESS, there can be no higher match
634: * for this device.
635: */
636: if (result == 0) {
637: best = dl;
638: pri = 0;
639: break;
640: }
641:
642: /*
643: * The driver returned an error so it certainly doesn't match.
644: */
645: if (result > 0) {
646: device_set_driver(child, 0);
647: continue;
648: }
649:
650: /*
651: * A priority lower than SUCCESS, remember the best matching
652: * driver. Initialise the value of pri for the first match.
653: */
654: if (best == 0 || result > pri) {
655: best = dl;
656: pri = result;
657: continue;
658: }
659: }
660:
661: /*
662: * If we found a driver, change state and initialise the devclass.
663: */
664: if (best) {
665: if (!child->devclass)
666: device_set_devclass(child, best->driver->name);
667: device_set_driver(child, best->driver);
668: if (pri < 0) {
669: /*
670: * A bit bogus. Call the probe method again to make
671: * sure that we have the right description.
672: */
673: DEVICE_PROBE(child);
674: }
675: child->state = DS_ALIVE;
676: return(0);
677: }
678:
679: return(ENXIO);
680: }
681:
682: device_t
683: device_get_parent(device_t dev)
684: {
685: return dev->parent;
686: }
687:
688: int
689: device_get_children(device_t dev, device_t **devlistp, int *devcountp)
690: {
691: int count;
692: device_t child;
693: device_t *list;
694:
695: count = 0;
696: TAILQ_FOREACH(child, &dev->children, link)
697: count++;
698:
699: list = malloc(count * sizeof(device_t), M_TEMP, M_INTWAIT | M_ZERO);
700: if (!list)
701: return(ENOMEM);
702:
703: count = 0;
704: TAILQ_FOREACH(child, &dev->children, link) {
705: list[count] = child;
706: count++;
707: }
708:
709: *devlistp = list;
710: *devcountp = count;
711:
712: return(0);
713: }
714:
715: driver_t *
716: device_get_driver(device_t dev)
717: {
718: return(dev->driver);
719: }
720:
721: devclass_t
722: device_get_devclass(device_t dev)
723: {
724: return(dev->devclass);
725: }
726:
727: const char *
728: device_get_name(device_t dev)
729: {
730: if (dev->devclass)
731: return devclass_get_name(dev->devclass);
732: return(NULL);
733: }
734:
735: const char *
736: device_get_nameunit(device_t dev)
737: {
738: return(dev->nameunit);
739: }
740:
741: int
742: device_get_unit(device_t dev)
743: {
744: return(dev->unit);
745: }
746:
747: const char *
748: device_get_desc(device_t dev)
749: {
750: return(dev->desc);
751: }
752:
753: uint32_t
754: device_get_flags(device_t dev)
755: {
756: return(dev->devflags);
757: }
758:
759: int
760: device_print_prettyname(device_t dev)
761: {
762: const char *name = device_get_name(dev);
763:
764: if (name == 0)
765: return printf("unknown: ");
766: else
767: return printf("%s%d: ", name, device_get_unit(dev));
768: }
769:
770: int
771: device_printf(device_t dev, const char * fmt, ...)
772: {
773: __va_list ap;
774: int retval;
775:
776: retval = device_print_prettyname(dev);
777: __va_start(ap, fmt);
778: retval += vprintf(fmt, ap);
779: __va_end(ap);
780: return retval;
781: }
782:
783: static void
784: device_set_desc_internal(device_t dev, const char* desc, int copy)
785: {
786: if (dev->desc && (dev->flags & DF_DESCMALLOCED)) {
787: free(dev->desc, M_BUS);
788: dev->flags &= ~DF_DESCMALLOCED;
789: dev->desc = NULL;
790: }
791:
792: if (copy && desc) {
793: dev->desc = malloc(strlen(desc) + 1, M_BUS, M_INTWAIT);
794: if (dev->desc) {
795: strcpy(dev->desc, desc);
796: dev->flags |= DF_DESCMALLOCED;
797: }
798: } else
799: /* Avoid a -Wcast-qual warning */
800: dev->desc = (char *)(uintptr_t) desc;
801:
802: #ifdef DEVICE_SYSCTLS
803: {
804: struct sysctl_oid *oid = &dev->oid[1];
805: oid->oid_arg1 = dev->desc ? dev->desc : "";
806: oid->oid_arg2 = dev->desc ? strlen(dev->desc) : 0;
807: }
808: #endif
809: }
810:
811: void
812: device_set_desc(device_t dev, const char* desc)
813: {
814: device_set_desc_internal(dev, desc, FALSE);
815: }
816:
817: void
818: device_set_desc_copy(device_t dev, const char* desc)
819: {
820: device_set_desc_internal(dev, desc, TRUE);
821: }
822:
823: void
824: device_set_flags(device_t dev, uint32_t flags)
825: {
826: dev->devflags = flags;
827: }
828:
829: void *
830: device_get_softc(device_t dev)
831: {
832: return dev->softc;
833: }
834:
835: void
836: device_set_softc(device_t dev, void *softc)
837: {
838: if (dev->softc && !(dev->flags & DF_EXTERNALSOFTC))
839: free(dev->softc, M_BUS);
840: dev->softc = softc;
841: if (dev->softc)
842: dev->flags |= DF_EXTERNALSOFTC;
843: else
844: dev->flags &= ~DF_EXTERNALSOFTC;
845: }
846:
847: void *
848: device_get_ivars(device_t dev)
849: {
850: return dev->ivars;
851: }
852:
853: void
854: device_set_ivars(device_t dev, void * ivars)
855: {
856: if (!dev)
857: return;
858:
859: dev->ivars = ivars;
860: }
861:
862: device_state_t
863: device_get_state(device_t dev)
864: {
865: return(dev->state);
866: }
867:
868: void
869: device_enable(device_t dev)
870: {
871: dev->flags |= DF_ENABLED;
872: }
873:
874: void
875: device_disable(device_t dev)
876: {
877: dev->flags &= ~DF_ENABLED;
878: }
879:
880: /*
881: * YYY cannot block
882: */
883: void
884: device_busy(device_t dev)
885: {
886: if (dev->state < DS_ATTACHED)
887: panic("device_busy: called for unattached device");
888: if (dev->busy == 0 && dev->parent)
889: device_busy(dev->parent);
890: dev->busy++;
891: dev->state = DS_BUSY;
892: }
893:
894: /*
895: * YYY cannot block
896: */
897: void
898: device_unbusy(device_t dev)
899: {
900: if (dev->state != DS_BUSY)
901: panic("device_unbusy: called for non-busy device");
902: dev->busy--;
903: if (dev->busy == 0) {
904: if (dev->parent)
905: device_unbusy(dev->parent);
906: dev->state = DS_ATTACHED;
907: }
908: }
909:
910: void
911: device_quiet(device_t dev)
912: {
913: dev->flags |= DF_QUIET;
914: }
915:
916: void
917: device_verbose(device_t dev)
918: {
919: dev->flags &= ~DF_QUIET;
920: }
921:
922: int
923: device_is_quiet(device_t dev)
924: {
925: return((dev->flags & DF_QUIET) != 0);
926: }
927:
928: int
929: device_is_enabled(device_t dev)
930: {
931: return((dev->flags & DF_ENABLED) != 0);
932: }
933:
934: int
935: device_is_alive(device_t dev)
936: {
937: return(dev->state >= DS_ALIVE);
938: }
939:
940: int
941: device_is_attached(device_t dev)
942: {
943: return(dev->state >= DS_ATTACHED);
944: }
945:
946: int
947: device_set_devclass(device_t dev, const char *classname)
948: {
949: devclass_t dc;
950:
951: if (!classname) {
952: if (dev->devclass)
953: devclass_delete_device(dev->devclass, dev);
954: return(0);
955: }
956:
957: if (dev->devclass) {
958: printf("device_set_devclass: device class already set\n");
959: return(EINVAL);
960: }
961:
962: dc = devclass_find_internal(classname, TRUE);
963: if (!dc)
964: return(ENOMEM);
965:
966: return(devclass_add_device(dc, dev));
967: }
968:
969: int
970: device_set_driver(device_t dev, driver_t *driver)
971: {
972: if (dev->state >= DS_ATTACHED)
973: return(EBUSY);
974:
975: if (dev->driver == driver)
976: return(0);
977:
978: if (dev->softc && !(dev->flags & DF_EXTERNALSOFTC)) {
979: free(dev->softc, M_BUS);
980: dev->softc = NULL;
981: }
982: kobj_delete((kobj_t) dev, 0);
983: dev->driver = driver;
984: if (driver) {
985: kobj_init((kobj_t) dev, (kobj_class_t) driver);
986: if (!(dev->flags & DF_EXTERNALSOFTC)) {
987: dev->softc = malloc(driver->size, M_BUS,
988: M_INTWAIT | M_ZERO);
989: if (!dev->softc) {
990: kobj_delete((kobj_t)dev, 0);
991: kobj_init((kobj_t) dev, &null_class);
992: dev->driver = NULL;
993: return(ENOMEM);
994: }
995: }
996: } else
997: kobj_init((kobj_t) dev, &null_class);
998: return(0);
999: }
1000:
1001: int
1002: device_probe_and_attach(device_t dev)
1003: {
1004: device_t bus = dev->parent;
1005: int error = 0;
1006: int hasclass = (dev->devclass != 0);
1007:
1008: if (dev->state >= DS_ALIVE)
1009: return(0);
1010:
1011: if ((dev->flags & DF_ENABLED) == 0) {
1012: if (bootverbose) {
1013: device_print_prettyname(dev);
1014: printf("not probed (disabled)\n");
1015: }
1016: return(0);
1017: }
1018:
1019: error = device_probe_child(bus, dev);
1020: if (error) {
1021: if (!(dev->flags & DF_DONENOMATCH)) {
1022: BUS_PROBE_NOMATCH(bus, dev);
1023: dev->flags |= DF_DONENOMATCH;
1024: }
1025: return(error);
1026: }
1027:
1028: if (!device_is_quiet(dev))
1029: device_print_child(bus, dev);
1030: error = DEVICE_ATTACH(dev);
1031: if (!error)
1032: dev->state = DS_ATTACHED;
1033: else {
1034: printf("device_probe_and_attach: %s%d attach returned %d\n",
1035: dev->driver->name, dev->unit, error);
1036: /* Unset the class that was set in device_probe_child */
1037: if (!hasclass)
1038: device_set_devclass(dev, 0);
1039: device_set_driver(dev, NULL);
1040: dev->state = DS_NOTPRESENT;
1041: }
1042:
1043: return(error);
1044: }
1045:
1046: int
1047: device_detach(device_t dev)
1048: {
1049: int error;
1050:
1051: PDEBUG(("%s", DEVICENAME(dev)));
1052: if (dev->state == DS_BUSY)
1053: return(EBUSY);
1054: if (dev->state != DS_ATTACHED)
1055: return(0);
1056:
1057: if ((error = DEVICE_DETACH(dev)) != 0)
1058: return(error);
1059: device_printf(dev, "detached\n");
1060: if (dev->parent)
1061: BUS_CHILD_DETACHED(dev->parent, dev);
1062:
1063: if (!(dev->flags & DF_FIXEDCLASS))
1064: devclass_delete_device(dev->devclass, dev);
1065:
1066: dev->state = DS_NOTPRESENT;
1067: device_set_driver(dev, NULL);
1068:
1069: return(0);
1070: }
1071:
1072: int
1073: device_shutdown(device_t dev)
1074: {
1075: if (dev->state < DS_ATTACHED)
1076: return 0;
1077: return DEVICE_SHUTDOWN(dev);
1078: }
1079:
1080: int
1081: device_set_unit(device_t dev, int unit)
1082: {
1083: devclass_t dc;
1084: int err;
1085:
1086: dc = device_get_devclass(dev);
1087: if (unit < dc->maxunit && dc->devices[unit])
1088: return(EBUSY);
1089: err = devclass_delete_device(dc, dev);
1090: if (err)
1091: return(err);
1092: dev->unit = unit;
1093: err = devclass_add_device(dc, dev);
1094: return(err);
1095: }
1096:
1097: #ifdef DEVICE_SYSCTLS
1098:
1099: /*
1100: * Sysctl nodes for devices.
1101: */
1102:
1103: SYSCTL_NODE(_hw, OID_AUTO, devices, CTLFLAG_RW, 0, "A list of all devices");
1104:
1105: static int
1106: sysctl_handle_children(SYSCTL_HANDLER_ARGS)
1107: {
1108: device_t dev = arg1;
1109: device_t child;
1110: int first = 1, error = 0;
1111:
1112: TAILQ_FOREACH(child, &dev->children, link)
1113: if (child->nameunit) {
1114: if (!first) {
1115: error = SYSCTL_OUT(req, ",", 1);
1116: if (error)
1117: return error;
1118: } else
1119: first = 0;
1120: error = SYSCTL_OUT(req, child->nameunit,
1121: strlen(child->nameunit));
1122: if (error)
1123: return(error);
1124: }
1125:
1126: error = SYSCTL_OUT(req, "", 1);
1127:
1128: return(error);
1129: }
1130:
1131: static int
1132: sysctl_handle_state(SYSCTL_HANDLER_ARGS)
1133: {
1134: device_t dev = arg1;
1135:
1136: switch (dev->state) {
1137: case DS_NOTPRESENT:
1138: return SYSCTL_OUT(req, "notpresent", sizeof("notpresent"));
1139: case DS_ALIVE:
1140: return SYSCTL_OUT(req, "alive", sizeof("alive"));
1141: case DS_ATTACHED:
1142: return SYSCTL_OUT(req, "attached", sizeof("attached"));
1143: case DS_BUSY:
1144: return SYSCTL_OUT(req, "busy", sizeof("busy"));
1145: default:
1146: return (0);
1147: }
1148: }
1149:
1150: static void
1151: device_register_oids(device_t dev)
1152: {
1153: struct sysctl_oid* oid;
1154:
1155: oid = &dev->oid[0];
1156: bzero(oid, sizeof(*oid));
1157: oid->oid_parent = &sysctl__hw_devices_children;
1158: oid->oid_number = OID_AUTO;
1159: oid->oid_kind = CTLTYPE_NODE | CTLFLAG_RW;
1160: oid->oid_arg1 = &dev->oidlist[0];
1161: oid->oid_arg2 = 0;
1162: oid->oid_name = dev->nameunit;
1163: oid->oid_handler = 0;
1164: oid->oid_fmt = "N";
1165: SLIST_INIT(&dev->oidlist[0]);
1166: sysctl_register_oid(oid);
1167:
1168: oid = &dev->oid[1];
1169: bzero(oid, sizeof(*oid));
1170: oid->oid_parent = &dev->oidlist[0];
1171: oid->oid_number = OID_AUTO;
1172: oid->oid_kind = CTLTYPE_STRING | CTLFLAG_RD;
1173: oid->oid_arg1 = dev->desc ? dev->desc : "";
1174: oid->oid_arg2 = dev->desc ? strlen(dev->desc) : 0;
1175: oid->oid_name = "desc";
1176: oid->oid_handler = sysctl_handle_string;
1177: oid->oid_fmt = "A";
1178: sysctl_register_oid(oid);
1179:
1180: oid = &dev->oid[2];
1181: bzero(oid, sizeof(*oid));
1182: oid->oid_parent = &dev->oidlist[0];
1183: oid->oid_number = OID_AUTO;
1184: oid->oid_kind = CTLTYPE_INT | CTLFLAG_RD;
1185: oid->oid_arg1 = dev;
1186: oid->oid_arg2 = 0;
1187: oid->oid_name = "children";
1188: oid->oid_handler = sysctl_handle_children;
1189: oid->oid_fmt = "A";
1190: sysctl_register_oid(oid);
1191:
1192: oid = &dev->oid[3];
1193: bzero(oid, sizeof(*oid));
1194: oid->oid_parent = &dev->oidlist[0];
1195: oid->oid_number = OID_AUTO;
1196: oid->oid_kind = CTLTYPE_INT | CTLFLAG_RD;
1197: oid->oid_arg1 = dev;
1198: oid->oid_arg2 = 0;
1199: oid->oid_name = "state";
1200: oid->oid_handler = sysctl_handle_state;
1201: oid->oid_fmt = "A";
1202: sysctl_register_oid(oid);
1203: }
1204:
1205: static void
1206: device_unregister_oids(device_t dev)
1207: {
1208: sysctl_unregister_oid(&dev->oid[0]);
1209: sysctl_unregister_oid(&dev->oid[1]);
1210: sysctl_unregister_oid(&dev->oid[2]);
1211: }
1212:
1213: #endif
1214:
1215: /*======================================*/
1216: /*
1217: * Access functions for device resources.
1218: */
1219:
1220: /* Supplied by config(8) in ioconf.c */
1221: extern struct config_device config_devtab[];
1222: extern int devtab_count;
1223:
1224: /* Runtime version */
1225: struct config_device *devtab = config_devtab;
1226:
1227: static int
1228: resource_new_name(const char *name, int unit)
1229: {
1230: struct config_device *new;
1231:
1232: new = malloc((devtab_count + 1) * sizeof(*new), M_TEMP,
1233: M_INTWAIT | M_ZERO);
1234: if (new == NULL)
1235: return(-1);
1236: if (devtab && devtab_count > 0)
1237: bcopy(devtab, new, devtab_count * sizeof(*new));
1238: new[devtab_count].name = malloc(strlen(name) + 1, M_TEMP, M_INTWAIT);
1239: if (new[devtab_count].name == NULL) {
1240: free(new, M_TEMP);
1241: return(-1);
1242: }
1243: strcpy(new[devtab_count].name, name);
1244: new[devtab_count].unit = unit;
1245: new[devtab_count].resource_count = 0;
1246: new[devtab_count].resources = NULL;
1247: devtab = new;
1248: return devtab_count++;
1249: }
1250:
1251: static int
1252: resource_new_resname(int j, const char *resname, resource_type type)
1253: {
1254: struct config_resource *new;
1255: int i;
1256:
1257: i = devtab[j].resource_count;
1258: new = malloc((i + 1) * sizeof(*new), M_TEMP, M_INTWAIT | M_ZERO);
1259: if (new == NULL)
1260: return(-1);
1261: if (devtab[j].resources && i > 0)
1262: bcopy(devtab[j].resources, new, i * sizeof(*new));
1263: new[i].name = malloc(strlen(resname) + 1, M_TEMP, M_INTWAIT);
1264: if (new[i].name == NULL) {
1265: free(new, M_TEMP);
1266: return(-1);
1267: }
1268: strcpy(new[i].name, resname);
1269: new[i].type = type;
1270: if (devtab[j].resources)
1271: free(devtab[j].resources, M_TEMP);
1272: devtab[j].resources = new;
1273: devtab[j].resource_count = i + 1;
1274: return(i);
1275: }
1276:
1277: static int
1278: resource_match_string(int i, const char *resname, const char *value)
1279: {
1280: int j;
1281: struct config_resource *res;
1282:
1283: for (j = 0, res = devtab[i].resources;
1284: j < devtab[i].resource_count; j++, res++)
1285: if (!strcmp(res->name, resname)
1286: && res->type == RES_STRING
1287: && !strcmp(res->u.stringval, value))
1288: return(j);
1289: return(-1);
1290: }
1291:
1292: static int
1293: resource_find(const char *name, int unit, const char *resname,
1294: struct config_resource **result)
1295: {
1296: int i, j;
1297: struct config_resource *res;
1298:
1299: /*
1300: * First check specific instances, then generic.
1301: */
1302: for (i = 0; i < devtab_count; i++) {
1303: if (devtab[i].unit < 0)
1304: continue;
1305: if (!strcmp(devtab[i].name, name) && devtab[i].unit == unit) {
1306: res = devtab[i].resources;
1307: for (j = 0; j < devtab[i].resource_count; j++, res++)
1308: if (!strcmp(res->name, resname)) {
1309: *result = res;
1310: return(0);
1311: }
1312: }
1313: }
1314: for (i = 0; i < devtab_count; i++) {
1315: if (devtab[i].unit >= 0)
1316: continue;
1317: /* XXX should this `&& devtab[i].unit == unit' be here? */
1318: /* XXX if so, then the generic match does nothing */
1319: if (!strcmp(devtab[i].name, name) && devtab[i].unit == unit) {
1320: res = devtab[i].resources;
1321: for (j = 0; j < devtab[i].resource_count; j++, res++)
1322: if (!strcmp(res->name, resname)) {
1323: *result = res;
1324: return(0);
1325: }
1326: }
1327: }
1328: return(ENOENT);
1329: }
1330:
1331: int
1332: resource_int_value(const char *name, int unit, const char *resname, int *result)
1333: {
1334: int error;
1335: struct config_resource *res;
1336:
1337: if ((error = resource_find(name, unit, resname, &res)) != 0)
1338: return(error);
1339: if (res->type != RES_INT)
1340: return(EFTYPE);
1341: *result = res->u.intval;
1342: return(0);
1343: }
1344:
1345: int
1346: resource_long_value(const char *name, int unit, const char *resname,
1347: long *result)
1348: {
1349: int error;
1350: struct config_resource *res;
1351:
1352: if ((error = resource_find(name, unit, resname, &res)) != 0)
1353: return(error);
1354: if (res->type != RES_LONG)
1355: return(EFTYPE);
1356: *result = res->u.longval;
1357: return(0);
1358: }
1359:
1360: int
1361: resource_string_value(const char *name, int unit, const char *resname,
1362: char **result)
1363: {
1364: int error;
1365: struct config_resource *res;
1366:
1367: if ((error = resource_find(name, unit, resname, &res)) != 0)
1368: return(error);
1369: if (res->type != RES_STRING)
1370: return(EFTYPE);
1371: *result = res->u.stringval;
1372: return(0);
1373: }
1374:
1375: int
1376: resource_query_string(int i, const char *resname, const char *value)
1377: {
1378: if (i < 0)
1379: i = 0;
1380: else
1381: i = i + 1;
1382: for (; i < devtab_count; i++)
1383: if (resource_match_string(i, resname, value) >= 0)
1384: return(i);
1385: return(-1);
1386: }
1387:
1388: int
1389: resource_locate(int i, const char *resname)
1390: {
1391: if (i < 0)
1392: i = 0;
1393: else
1394: i = i + 1;
1395: for (; i < devtab_count; i++)
1396: if (!strcmp(devtab[i].name, resname))
1397: return(i);
1398: return(-1);
1399: }
1400:
1401: int
1402: resource_count(void)
1403: {
1404: return(devtab_count);
1405: }
1406:
1407: char *
1408: resource_query_name(int i)
1409: {
1410: return(devtab[i].name);
1411: }
1412:
1413: int
1414: resource_query_unit(int i)
1415: {
1416: return(devtab[i].unit);
1417: }
1418:
1419: static int
1420: resource_create(const char *name, int unit, const char *resname,
1421: resource_type type, struct config_resource **result)
1422: {
1423: int i, j;
1424: struct config_resource *res = NULL;
1425:
1426: for (i = 0; i < devtab_count; i++)
1427: if (!strcmp(devtab[i].name, name) && devtab[i].unit == unit) {
1428: res = devtab[i].resources;
1429: break;
1430: }
1431: if (res == NULL) {
1432: i = resource_new_name(name, unit);
1433: if (i < 0)
1434: return(ENOMEM);
1435: res = devtab[i].resources;
1436: }
1437: for (j = 0; j < devtab[i].resource_count; j++, res++)
1438: if (!strcmp(res->name, resname)) {
1439: *result = res;
1440: return(0);
1441: }
1442: j = resource_new_resname(i, resname, type);
1443: if (j < 0)
1444: return(ENOMEM);
1445: res = &devtab[i].resources[j];
1446: *result = res;
1447: return(0);
1448: }
1449:
1450: int
1451: resource_set_int(const char *name, int unit, const char *resname, int value)
1452: {
1453: int error;
1454: struct config_resource *res;
1455:
1456: error = resource_create(name, unit, resname, RES_INT, &res);
1457: if (error)
1458: return(error);
1459: if (res->type != RES_INT)
1460: return(EFTYPE);
1461: res->u.intval = value;
1462: return(0);
1463: }
1464:
1465: int
1466: resource_set_long(const char *name, int unit, const char *resname, long value)
1467: {
1468: int error;
1469: struct config_resource *res;
1470:
1471: error = resource_create(name, unit, resname, RES_LONG, &res);
1472: if (error)
1473: return(error);
1474: if (res->type != RES_LONG)
1475: return(EFTYPE);
1476: res->u.longval = value;
1477: return(0);
1478: }
1479:
1480: int
1481: resource_set_string(const char *name, int unit, const char *resname,
1482: const char *value)
1483: {
1484: int error;
1485: struct config_resource *res;
1486:
1487: error = resource_create(name, unit, resname, RES_STRING, &res);
1488: if (error)
1489: return(error);
1490: if (res->type != RES_STRING)
1491: return(EFTYPE);
1492: if (res->u.stringval)
1493: free(res->u.stringval, M_TEMP);
1494: res->u.stringval = malloc(strlen(value) + 1, M_TEMP, M_INTWAIT);
1495: if (res->u.stringval == NULL)
1496: return(ENOMEM);
1497: strcpy(res->u.stringval, value);
1498: return(0);
1499: }
1500:
1501: static void
1502: resource_cfgload(void *dummy __unused)
1503: {
1504: struct config_resource *res, *cfgres;
1505: int i, j;
1506: int error;
1507: char *name, *resname;
1508: int unit;
1509: resource_type type;
1510: char *stringval;
1511: int config_devtab_count;
1512:
1513: config_devtab_count = devtab_count;
1514: devtab = NULL;
1515: devtab_count = 0;
1516:
1517: for (i = 0; i < config_devtab_count; i++) {
1518: name = config_devtab[i].name;
1519: unit = config_devtab[i].unit;
1520:
1521: for (j = 0; j < config_devtab[i].resource_count; j++) {
1522: cfgres = config_devtab[i].resources;
1523: resname = cfgres[j].name;
1524: type = cfgres[j].type;
1525: error = resource_create(name, unit, resname, type,
1526: &res);
1527: if (error) {
1528: printf("create resource %s%d: error %d\n",
1529: name, unit, error);
1530: continue;
1531: }
1532: if (res->type != type) {
1533: printf("type mismatch %s%d: %d != %d\n",
1534: name, unit, res->type, type);
1535: continue;
1536: }
1537: switch (type) {
1538: case RES_INT:
1539: res->u.intval = cfgres[j].u.intval;
1540: break;
1541: case RES_LONG:
1542: res->u.longval = cfgres[j].u.longval;
1543: break;
1544: case RES_STRING:
1545: if (res->u.stringval)
1546: free(res->u.stringval, M_TEMP);
1547: stringval = cfgres[j].u.stringval;
1548: res->u.stringval = malloc(strlen(stringval) + 1,
1549: M_TEMP, M_INTWAIT);
1550: if (res->u.stringval == NULL)
1551: break;
1552: strcpy(res->u.stringval, stringval);
1553: break;
1554: default:
1555: panic("unknown resource type %d\n", type);
1556: }
1557: }
1558: }
1559: }
1560: SYSINIT(cfgload, SI_SUB_KMEM, SI_ORDER_ANY + 50, resource_cfgload, 0)
1561:
1562:
1563: /*======================================*/
1564: /*
1565: * Some useful method implementations to make life easier for bus drivers.
1566: */
1567:
1568: void
1569: resource_list_init(struct resource_list *rl)
1570: {
1571: SLIST_INIT(rl);
1572: }
1573:
1574: void
1575: resource_list_free(struct resource_list *rl)
1576: {
1577: struct resource_list_entry *rle;
1578:
1579: while ((rle = SLIST_FIRST(rl)) != NULL) {
1580: if (rle->res)
1581: panic("resource_list_free: resource entry is busy");
1582: SLIST_REMOVE_HEAD(rl, link);
1583: free(rle, M_BUS);
1584: }
1585: }
1586:
1587: void
1588: resource_list_add(struct resource_list *rl,
1589: int type, int rid,
1590: u_long start, u_long end, u_long count)
1591: {
1592: struct resource_list_entry *rle;
1593:
1594: rle = resource_list_find(rl, type, rid);
1595: if (rle == NULL) {
1596: rle = malloc(sizeof(struct resource_list_entry), M_BUS,
1597: M_INTWAIT);
1598: if (!rle)
1599: panic("resource_list_add: can't record entry");
1600: SLIST_INSERT_HEAD(rl, rle, link);
1601: rle->type = type;
1602: rle->rid = rid;
1603: rle->res = NULL;
1604: }
1605:
1606: if (rle->res)
1607: panic("resource_list_add: resource entry is busy");
1608:
1609: rle->start = start;
1610: rle->end = end;
1611: rle->count = count;
1612: }
1613:
1614: struct resource_list_entry*
1615: resource_list_find(struct resource_list *rl,
1616: int type, int rid)
1617: {
1618: struct resource_list_entry *rle;
1619:
1620: SLIST_FOREACH(rle, rl, link)
1621: if (rle->type == type && rle->rid == rid)
1622: return(rle);
1623: return(NULL);
1624: }
1625:
1626: void
1627: resource_list_delete(struct resource_list *rl,
1628: int type, int rid)
1629: {
1630: struct resource_list_entry *rle = resource_list_find(rl, type, rid);
1631:
1632: if (rle) {
1633: SLIST_REMOVE(rl, rle, resource_list_entry, link);
1634: free(rle, M_BUS);
1635: }
1636: }
1637:
1638: struct resource *
1639: resource_list_alloc(struct resource_list *rl,
1640: device_t bus, device_t child,
1641: int type, int *rid,
1642: u_long start, u_long end,
1643: u_long count, u_int flags)
1644: {
1645: struct resource_list_entry *rle = 0;
1646: int passthrough = (device_get_parent(child) != bus);
1647: int isdefault = (start == 0UL && end == ~0UL);
1648:
1649: if (passthrough) {
1650: return(BUS_ALLOC_RESOURCE(device_get_parent(bus), child,
1651: type, rid,
1652: start, end, count, flags));
1653: }
1654:
1655: rle = resource_list_find(rl, type, *rid);
1656:
1657: if (!rle)
1658: return(0); /* no resource of that type/rid */
1659: if (rle->res)
1660: panic("resource_list_alloc: resource entry is busy");
1661:
1662: if (isdefault) {
1663: start = rle->start;
1664: count = max(count, rle->count);
1665: end = max(rle->end, start + count - 1);
1666: }
1667:
1668: rle->res = BUS_ALLOC_RESOURCE(device_get_parent(bus), child,
1669: type, rid, start, end, count, flags);
1670:
1671: /*
1672: * Record the new range.
1673: */
1674: if (rle->res) {
1675: rle->start = rman_get_start(rle->res);
1676: rle->end = rman_get_end(rle->res);
1677: rle->count = count;
1678: }
1679:
1680: return(rle->res);
1681: }
1682:
1683: int
1684: resource_list_release(struct resource_list *rl,
1685: device_t bus, device_t child,
1686: int type, int rid, struct resource *res)
1687: {
1688: struct resource_list_entry *rle = 0;
1689: int passthrough = (device_get_parent(child) != bus);
1690: int error;
1691:
1692: if (passthrough) {
1693: return(BUS_RELEASE_RESOURCE(device_get_parent(bus), child,
1694: type, rid, res));
1695: }
1696:
1697: rle = resource_list_find(rl, type, rid);
1698:
1699: if (!rle)
1700: panic("resource_list_release: can't find resource");
1701: if (!rle->res)
1702: panic("resource_list_release: resource entry is not busy");
1703:
1704: error = BUS_RELEASE_RESOURCE(device_get_parent(bus), child,
1705: type, rid, res);
1706: if (error)
1707: return(error);
1708:
1709: rle->res = NULL;
1710: return(0);
1711: }
1712:
1713: int
1714: resource_list_print_type(struct resource_list *rl, const char *name, int type,
1715: const char *format)
1716: {
1717: struct resource_list_entry *rle;
1718: int printed, retval;
1719:
1720: printed = 0;
1721: retval = 0;
1722: /* Yes, this is kinda cheating */
1723: SLIST_FOREACH(rle, rl, link) {
1724: if (rle->type == type) {
1725: if (printed == 0)
1726: retval += printf(" %s ", name);
1727: else
1728: retval += printf(",");
1729: printed++;
1730: retval += printf(format, rle->start);
1731: if (rle->count > 1) {
1732: retval += printf("-");
1733: retval += printf(format, rle->start +
1734: rle->count - 1);
1735: }
1736: }
1737: }
1738: return(retval);
1739: }
1740:
1741: /*
1742: * Call DEVICE_IDENTIFY for each driver.
1743: */
1744: int
1745: bus_generic_probe(device_t dev)
1746: {
1747: devclass_t dc = dev->devclass;
1748: driverlink_t dl;
1749:
1750: TAILQ_FOREACH(dl, &dc->drivers, link)
1751: DEVICE_IDENTIFY(dl->driver, dev);
1752:
1753: return(0);
1754: }
1755:
1756: int
1757: bus_generic_attach(device_t dev)
1758: {
1759: device_t child;
1760:
1761: TAILQ_FOREACH(child, &dev->children, link)
1762: device_probe_and_attach(child);
1763:
1764: return(0);
1765: }
1766:
1767: int
1768: bus_generic_detach(device_t dev)
1769: {
1770: device_t child;
1771: int error;
1772:
1773: if (dev->state != DS_ATTACHED)
1774: return(EBUSY);
1775:
1776: TAILQ_FOREACH(child, &dev->children, link)
1777: if ((error = device_detach(child)) != 0)
1778: return(error);
1779:
1780: return 0;
1781: }
1782:
1783: int
1784: bus_generic_shutdown(device_t dev)
1785: {
1786: device_t child;
1787:
1788: TAILQ_FOREACH(child, &dev->children, link)
1789: device_shutdown(child);
1790:
1791: return(0);
1792: }
1793:
1794: int
1795: bus_generic_suspend(device_t dev)
1796: {
1797: int error;
1798: device_t child, child2;
1799:
1800: TAILQ_FOREACH(child, &dev->children, link) {
1801: error = DEVICE_SUSPEND(child);
1802: if (error) {
1803: for (child2 = TAILQ_FIRST(&dev->children);
1804: child2 && child2 != child;
1805: child2 = TAILQ_NEXT(child2, link))
1806: DEVICE_RESUME(child2);
1807: return(error);
1808: }
1809: }
1810: return(0);
1811: }
1812:
1813: int
1814: bus_generic_resume(device_t dev)
1815: {
1816: device_t child;
1817:
1818: TAILQ_FOREACH(child, &dev->children, link)
1819: DEVICE_RESUME(child);
1820: /* if resume fails, there's nothing we can usefully do... */
1821:
1822: return(0);
1823: }
1824:
1825: int
1826: bus_print_child_header(device_t dev, device_t child)
1827: {
1828: int retval = 0;
1829:
1830: if (device_get_desc(child))
1831: retval += device_printf(child, "<%s>", device_get_desc(child));
1832: else
1833: retval += printf("%s", device_get_nameunit(child));
1834:
1835: return(retval);
1836: }
1837:
1838: int
1839: bus_print_child_footer(device_t dev, device_t child)
1840: {
1841: return(printf(" on %s\n", device_get_nameunit(dev)));
1842: }
1843:
1844: int
1845: bus_generic_print_child(device_t dev, device_t child)
1846: {
1847: int retval = 0;
1848:
1849: retval += bus_print_child_header(dev, child);
1850: retval += bus_print_child_footer(dev, child);
1851:
1852: return(retval);
1853: }
1854:
1855: int
1856: bus_generic_read_ivar(device_t dev, device_t child, int index,
1857: uintptr_t * result)
1858: {
1859: return(ENOENT);
1860: }
1861:
1862: int
1863: bus_generic_write_ivar(device_t dev, device_t child, int index,
1864: uintptr_t value)
1865: {
1866: return(ENOENT);
1867: }
1868:
1869: struct resource_list *
1870: bus_generic_get_resource_list(device_t dev, device_t child)
1871: {
1872: return(NULL);
1873: }
1874:
1875: void
1876: bus_generic_driver_added(device_t dev, driver_t *driver)
1877: {
1878: device_t child;
1879:
1880: DEVICE_IDENTIFY(driver, dev);
1881: TAILQ_FOREACH(child, &dev->children, link)
1882: if (child->state == DS_NOTPRESENT)
1883: device_probe_and_attach(child);
1884: }
1885:
1886: int
1887: bus_generic_setup_intr(device_t dev, device_t child, struct resource *irq,
1888: int flags, driver_intr_t *intr, void *arg,
1889: void **cookiep)
1890: {
1891: /* Propagate up the bus hierarchy until someone handles it. */
1892: if (dev->parent)
1893: return(BUS_SETUP_INTR(dev->parent, child, irq, flags,
1894: intr, arg, cookiep));
1895: else
1896: return(EINVAL);
1897: }
1898:
1899: int
1900: bus_generic_teardown_intr(device_t dev, device_t child, struct resource *irq,
1901: void *cookie)
1902: {
1903: /* Propagate up the bus hierarchy until someone handles it. */
1904: if (dev->parent)
1905: return(BUS_TEARDOWN_INTR(dev->parent, child, irq, cookie));
1906: else
1907: return(EINVAL);
1908: }
1909:
1910: struct resource *
1911: bus_generic_alloc_resource(device_t dev, device_t child, int type, int *rid,
1912: u_long start, u_long end, u_long count, u_int flags)
1913: {
1914: /* Propagate up the bus hierarchy until someone handles it. */
1915: if (dev->parent)
1916: return(BUS_ALLOC_RESOURCE(dev->parent, child, type, rid,
1917: start, end, count, flags));
1918: else
1919: return(NULL);
1920: }
1921:
1922: int
1923: bus_generic_release_resource(device_t dev, device_t child, int type, int rid,
1924: struct resource *r)
1925: {
1926: /* Propagate up the bus hierarchy until someone handles it. */
1927: if (dev->parent)
1928: return(BUS_RELEASE_RESOURCE(dev->parent, child, type, rid, r));
1929: else
1930: return(EINVAL);
1931: }
1932:
1933: int
1934: bus_generic_activate_resource(device_t dev, device_t child, int type, int rid,
1935: struct resource *r)
1936: {
1937: /* Propagate up the bus hierarchy until someone handles it. */
1938: if (dev->parent)
1939: return(BUS_ACTIVATE_RESOURCE(dev->parent, child, type, rid, r));
1940: else
1941: return(EINVAL);
1942: }
1943:
1944: int
1945: bus_generic_deactivate_resource(device_t dev, device_t child, int type,
1946: int rid, struct resource *r)
1947: {
1948: /* Propagate up the bus hierarchy until someone handles it. */
1949: if (dev->parent)
1950: return(BUS_DEACTIVATE_RESOURCE(dev->parent, child, type, rid,
1951: r));
1952: else
1953: return(EINVAL);
1954: }
1955:
1956: int
1957: bus_generic_config_intr(device_t dev, int irq, enum intr_trigger trig,
1958: enum intr_polarity pol)
1959: {
1960: /* Propagate up the bus hierarchy until someone handles it. */
1961: if (dev->parent)
1962: return(BUS_CONFIG_INTR(dev->parent, irq, trig, pol));
1963: else
1964: return(EINVAL);
1965: }
1966:
1967: int
1968: bus_generic_rl_get_resource(device_t dev, device_t child, int type, int rid,
1969: u_long *startp, u_long *countp)
1970: {
1971: struct resource_list *rl = NULL;
1972: struct resource_list_entry *rle = NULL;
1973:
1974: rl = BUS_GET_RESOURCE_LIST(dev, child);
1975: if (!rl)
1976: return(EINVAL);
1977:
1978: rle = resource_list_find(rl, type, rid);
1979: if (!rle)
1980: return(ENOENT);
1981:
1982: if (startp)
1983: *startp = rle->start;
1984: if (countp)
1985: *countp = rle->count;
1986:
1987: return(0);
1988: }
1989:
1990: int
1991: bus_generic_rl_set_resource(device_t dev, device_t child, int type, int rid,
1992: u_long start, u_long count)
1993: {
1994: struct resource_list *rl = NULL;
1995:
1996: rl = BUS_GET_RESOURCE_LIST(dev, child);
1997: if (!rl)
1998: return(EINVAL);
1999:
2000: resource_list_add(rl, type, rid, start, (start + count - 1), count);
2001:
2002: return(0);
2003: }
2004:
2005: void
2006: bus_generic_rl_delete_resource(device_t dev, device_t child, int type, int rid)
2007: {
2008: struct resource_list *rl = NULL;
2009:
2010: rl = BUS_GET_RESOURCE_LIST(dev, child);
2011: if (!rl)
2012: return;
2013:
2014: resource_list_delete(rl, type, rid);
2015: }
2016:
2017: int
2018: bus_generic_rl_release_resource(device_t dev, device_t child, int type,
2019: int rid, struct resource *r)
2020: {
2021: struct resource_list *rl = NULL;
2022:
2023: rl = BUS_GET_RESOURCE_LIST(dev, child);
2024: if (!rl)
2025: return(EINVAL);
2026:
2027: return(resource_list_release(rl, dev, child, type, rid, r));
2028: }
2029:
2030: struct resource *
2031: bus_generic_rl_alloc_resource(device_t dev, device_t child, int type,
2032: int *rid, u_long start, u_long end, u_long count, u_int flags)
2033: {
2034: struct resource_list *rl = NULL;
2035:
2036: rl = BUS_GET_RESOURCE_LIST(dev, child);
2037: if (!rl)
2038: return(NULL);
2039:
2040: return(resource_list_alloc(rl, dev, child, type, rid,
2041: start, end, count, flags));
2042: }
2043:
2044: int
2045: bus_generic_child_present(device_t bus, device_t child)
2046: {
2047: return(BUS_CHILD_PRESENT(device_get_parent(bus), bus));
2048: }
2049:
2050:
2051: /*
2052: * Some convenience functions to make it easier for drivers to use the
2053: * resource-management functions. All these really do is hide the
2054: * indirection through the parent's method table, making for slightly
2055: * less-wordy code. In the future, it might make sense for this code
2056: * to maintain some sort of a list of resources allocated by each device.
2057: */
2058: struct resource *
2059: bus_alloc_resource(device_t dev, int type, int *rid, u_long start, u_long end,
2060: u_long count, u_int flags)
2061: {
2062: if (dev->parent == 0)
2063: return(0);
2064: return(BUS_ALLOC_RESOURCE(dev->parent, dev, type, rid, start, end,
2065: count, flags));
2066: }
2067:
2068: int
2069: bus_activate_resource(device_t dev, int type, int rid, struct resource *r)
2070: {
2071: if (dev->parent == 0)
2072: return(EINVAL);
2073: return(BUS_ACTIVATE_RESOURCE(dev->parent, dev, type, rid, r));
2074: }
2075:
2076: int
2077: bus_deactivate_resource(device_t dev, int type, int rid, struct resource *r)
2078: {
2079: if (dev->parent == 0)
2080: return(EINVAL);
2081: return(BUS_DEACTIVATE_RESOURCE(dev->parent, dev, type, rid, r));
2082: }
2083:
2084: int
2085: bus_release_resource(device_t dev, int type, int rid, struct resource *r)
2086: {
2087: if (dev->parent == 0)
2088: return(EINVAL);
2089: return(BUS_RELEASE_RESOURCE(dev->parent, dev, type, rid, r));
2090: }
2091:
2092: int
2093: bus_setup_intr(device_t dev, struct resource *r, int flags,
2094: driver_intr_t handler, void *arg, void **cookiep)
2095: {
2096: if (dev->parent == 0)
2097: return(EINVAL);
2098: return(BUS_SETUP_INTR(dev->parent, dev, r, flags, handler, arg,
2099: cookiep));
2100: }
2101:
2102: int
2103: bus_teardown_intr(device_t dev, struct resource *r, void *cookie)
2104: {
2105: if (dev->parent == 0)
2106: return(EINVAL);
2107: return(BUS_TEARDOWN_INTR(dev->parent, dev, r, cookie));
2108: }
2109:
2110: int
2111: bus_set_resource(device_t dev, int type, int rid,
2112: u_long start, u_long count)
2113: {
2114: return(BUS_SET_RESOURCE(device_get_parent(dev), dev, type, rid,
2115: start, count));
2116: }
2117:
2118: int
2119: bus_get_resource(device_t dev, int type, int rid,
2120: u_long *startp, u_long *countp)
2121: {
2122: return(BUS_GET_RESOURCE(device_get_parent(dev), dev, type, rid,
2123: startp, countp));
2124: }
2125:
2126: u_long
2127: bus_get_resource_start(device_t dev, int type, int rid)
2128: {
2129: u_long start, count;
2130: int error;
2131:
2132: error = BUS_GET_RESOURCE(device_get_parent(dev), dev, type, rid,
2133: &start, &count);
2134: if (error)
2135: return(0);
2136: return(start);
2137: }
2138:
2139: u_long
2140: bus_get_resource_count(device_t dev, int type, int rid)
2141: {
2142: u_long start, count;
2143: int error;
2144:
2145: error = BUS_GET_RESOURCE(device_get_parent(dev), dev, type, rid,
2146: &start, &count);
2147: if (error)
2148: return(0);
2149: return(count);
2150: }
2151:
2152: void
2153: bus_delete_resource(device_t dev, int type, int rid)
2154: {
2155: BUS_DELETE_RESOURCE(device_get_parent(dev), dev, type, rid);
2156: }
2157:
2158: int
2159: bus_child_present(device_t child)
2160: {
2161: return (BUS_CHILD_PRESENT(device_get_parent(child), child));
2162: }
2163:
2164: int
2165: bus_child_pnpinfo_str(device_t child, char *buf, size_t buflen)
2166: {
2167: device_t parent;
2168:
2169: parent = device_get_parent(child);
2170: if (parent == NULL) {
2171: *buf = '\0';
2172: return (0);
2173: }
2174: return (BUS_CHILD_PNPINFO_STR(parent, child, buf, buflen));
2175: }
2176:
2177: int
2178: bus_child_location_str(device_t child, char *buf, size_t buflen)
2179: {
2180: device_t parent;
2181:
2182: parent = device_get_parent(child);
2183: if (parent == NULL) {
2184: *buf = '\0';
2185: return (0);
2186: }
2187: return (BUS_CHILD_LOCATION_STR(parent, child, buf, buflen));
2188: }
2189:
2190: static int
2191: root_print_child(device_t dev, device_t child)
2192: {
2193: return(0);
2194: }
2195:
2196: static int
2197: root_setup_intr(device_t dev, device_t child, driver_intr_t *intr, void *arg,
2198: void **cookiep)
2199: {
2200: /*
2201: * If an interrupt mapping gets to here something bad has happened.
2202: */
2203: panic("root_setup_intr");
2204: }
2205:
2206: /*
2207: * If we get here, assume that the device is permanant and really is
2208: * present in the system. Removable bus drivers are expected to intercept
2209: * this call long before it gets here. We return -1 so that drivers that
2210: * really care can check vs -1 or some ERRNO returned higher in the food
2211: * chain.
2212: */
2213: static int
2214: root_child_present(device_t dev, device_t child)
2215: {
2216: return(-1);
2217: }
2218:
2219: /*
2220: * XXX NOTE! other defaults may be set in bus_if.m
2221: */
2222: static kobj_method_t root_methods[] = {
2223: /* Device interface */
2224: KOBJMETHOD(device_shutdown, bus_generic_shutdown),
2225: KOBJMETHOD(device_suspend, bus_generic_suspend),
2226: KOBJMETHOD(device_resume, bus_generic_resume),
2227:
2228: /* Bus interface */
2229: KOBJMETHOD(bus_print_child, root_print_child),
2230: KOBJMETHOD(bus_read_ivar, bus_generic_read_ivar),
2231: KOBJMETHOD(bus_write_ivar, bus_generic_write_ivar),
2232: KOBJMETHOD(bus_setup_intr, root_setup_intr),
2233: KOBJMETHOD(bus_child_present, root_child_present),
2234:
2235: { 0, 0 }
2236: };
2237:
2238: static driver_t root_driver = {
2239: "root",
2240: root_methods,
2241: 1, /* no softc */
2242: };
2243:
2244: device_t root_bus;
2245: devclass_t root_devclass;
2246:
2247: static int
2248: root_bus_module_handler(module_t mod, int what, void* arg)
2249: {
2250: switch (what) {
2251: case MOD_LOAD:
2252: root_bus = make_device(NULL, "root", 0);
2253: root_bus->desc = "System root bus";
2254: kobj_init((kobj_t) root_bus, (kobj_class_t) &root_driver);
2255: root_bus->driver = &root_driver;
2256: root_bus->state = DS_ATTACHED;
2257: root_devclass = devclass_find_internal("root", FALSE);
2258: return(0);
2259:
2260: case MOD_SHUTDOWN:
2261: device_shutdown(root_bus);
2262: return(0);
2263: default:
2264: return(0);
2265: }
2266: }
2267:
2268: static moduledata_t root_bus_mod = {
2269: "rootbus",
2270: root_bus_module_handler,
2271: 0
2272: };
2273: DECLARE_MODULE(rootbus, root_bus_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST);
2274:
2275: void
2276: root_bus_configure(void)
2277: {
2278: device_t dev;
2279:
2280: PDEBUG(("."));
2281:
2282: TAILQ_FOREACH(dev, &root_bus->children, link)
2283: device_probe_and_attach(dev);
2284: }
2285:
2286: int
2287: driver_module_handler(module_t mod, int what, void *arg)
2288: {
2289: int error, i;
2290: struct driver_module_data *dmd;
2291: devclass_t bus_devclass;
2292:
2293: dmd = (struct driver_module_data *)arg;
2294: bus_devclass = devclass_find_internal(dmd->dmd_busname, TRUE);
2295: error = 0;
2296:
2297: switch (what) {
2298: case MOD_LOAD:
2299: if (dmd->dmd_chainevh)
2300: error = dmd->dmd_chainevh(mod,what,dmd->dmd_chainarg);
2301:
2302: for (i = 0; !error && i < dmd->dmd_ndrivers; i++) {
2303: PDEBUG(("Loading module: driver %s on bus %s",
2304: DRIVERNAME(dmd->dmd_drivers[i]),
2305: dmd->dmd_busname));
2306: error = devclass_add_driver(bus_devclass,
2307: dmd->dmd_drivers[i]);
2308: }
2309: if (error)
2310: break;
2311:
2312: /*
2313: * The drivers loaded in this way are assumed to all
2314: * implement the same devclass.
2315: */
2316: *dmd->dmd_devclass =
2317: devclass_find_internal(dmd->dmd_drivers[0]->name,
2318: TRUE);
2319: break;
2320:
2321: case MOD_UNLOAD:
2322: for (i = 0; !error && i < dmd->dmd_ndrivers; i++) {
2323: PDEBUG(("Unloading module: driver %s from bus %s",
2324: DRIVERNAME(dmd->dmd_drivers[i]),
2325: dmd->dmd_busname));
2326: error = devclass_delete_driver(bus_devclass,
2327: dmd->dmd_drivers[i]);
2328: }
2329:
2330: if (!error && dmd->dmd_chainevh)
2331: error = dmd->dmd_chainevh(mod,what,dmd->dmd_chainarg);
2332: break;
2333: }
2334:
2335: return (error);
2336: }
2337:
2338: #ifdef BUS_DEBUG
2339:
2340: /*
2341: * The _short versions avoid iteration by not calling anything that prints
2342: * more than oneliners. I love oneliners.
2343: */
2344:
2345: static void
2346: print_device_short(device_t dev, int indent)
2347: {
2348: if (!dev)
2349: return;
2350:
2351: indentprintf(("device %d: <%s> %sparent,%schildren,%s%s%s%s,%sivars,%ssoftc,busy=%d\n",
2352: dev->unit, dev->desc,
2353: (dev->parent? "":"no "),
2354: (TAILQ_EMPTY(&dev->children)? "no ":""),
2355: (dev->flags&DF_ENABLED? "enabled,":"disabled,"),
2356: (dev->flags&DF_FIXEDCLASS? "fixed,":""),
2357: (dev->flags&DF_WILDCARD? "wildcard,":""),
2358: (dev->flags&DF_DESCMALLOCED? "descmalloced,":""),
2359: (dev->ivars? "":"no "),
2360: (dev->softc? "":"no "),
2361: dev->busy));
2362: }
2363:
2364: static void
2365: print_device(device_t dev, int indent)
2366: {
2367: if (!dev)
2368: return;
2369:
2370: print_device_short(dev, indent);
2371:
2372: indentprintf(("Parent:\n"));
2373: print_device_short(dev->parent, indent+1);
2374: indentprintf(("Driver:\n"));
2375: print_driver_short(dev->driver, indent+1);
2376: indentprintf(("Devclass:\n"));
2377: print_devclass_short(dev->devclass, indent+1);
2378: }
2379:
2380: /*
2381: * Print the device and all its children (indented).
2382: */
2383: void
2384: print_device_tree_short(device_t dev, int indent)
2385: {
2386: device_t child;
2387:
2388: if (!dev)
2389: return;
2390:
2391: print_device_short(dev, indent);
2392:
2393: TAILQ_FOREACH(child, &dev->children, link)
2394: print_device_tree_short(child, indent+1);
2395: }
2396:
2397: /*
2398: * Print the device and all its children (indented).
2399: */
2400: void
2401: print_device_tree(device_t dev, int indent)
2402: {
2403: device_t child;
2404:
2405: if (!dev)
2406: return;
2407:
2408: print_device(dev, indent);
2409:
2410: TAILQ_FOREACH(child, &dev->children, link)
2411: print_device_tree(child, indent+1);
2412: }
2413:
2414: static void
2415: print_driver_short(driver_t *driver, int indent)
2416: {
2417: if (!driver)
2418: return;
2419:
2420: indentprintf(("driver %s: softc size = %d\n",
2421: driver->name, driver->size));
2422: }
2423:
2424: static void
2425: print_driver(driver_t *driver, int indent)
2426: {
2427: if (!driver)
2428: return;
2429:
2430: print_driver_short(driver, indent);
2431: }
2432:
2433:
2434: static void
2435: print_driver_list(driver_list_t drivers, int indent)
2436: {
2437: driverlink_t driver;
2438:
2439: TAILQ_FOREACH(driver, &drivers, link)
2440: print_driver(driver->driver, indent);
2441: }
2442:
2443: static void
2444: print_devclass_short(devclass_t dc, int indent)
2445: {
2446: if (!dc)
2447: return;
2448:
2449: indentprintf(("devclass %s: max units = %d\n", dc->name, dc->maxunit));
2450: }
2451:
2452: static void
2453: print_devclass(devclass_t dc, int indent)
2454: {
2455: int i;
2456:
2457: if (!dc)
2458: return;
2459:
2460: print_devclass_short(dc, indent);
2461: indentprintf(("Drivers:\n"));
2462: print_driver_list(dc->drivers, indent+1);
2463:
2464: indentprintf(("Devices:\n"));
2465: for (i = 0; i < dc->maxunit; i++)
2466: if (dc->devices[i])
2467: print_device(dc->devices[i], indent+1);
2468: }
2469:
2470: void
2471: print_devclass_list_short(void)
2472: {
2473: devclass_t dc;
2474:
2475: printf("Short listing of devclasses, drivers & devices:\n");
2476: TAILQ_FOREACH(dc, &devclasses, link) {
2477: print_devclass_short(dc, 0);
2478: }
2479: }
2480:
2481: void
2482: print_devclass_list(void)
2483: {
2484: devclass_t dc;
2485:
2486: printf("Full listing of devclasses, drivers & devices:\n");
2487: TAILQ_FOREACH(dc, &devclasses, link) {
2488: print_devclass(dc, 0);
2489: }
2490: }
2491:
2492: #endif
2493:
2494: /*
2495: * Check to see if a device is disabled via a disabled hint.
2496: */
2497: int
2498: resource_disabled(const char *name, int unit)
2499: {
2500: int error, value;
2501:
2502: error = resource_int_value(name, unit, "disabled", &value);
2503: if (error)
2504: return(0);
2505: return(value);
2506: }
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