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subr_bus.c
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Thu Apr 15 13:31:41 2004 UTC (9 years, 1 month ago) by
joerg
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CVS tags:
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KObj extension stage IIIb/III
Merge inheritance support from FreeBSD:
* Add a simpler form of 'inheritance' for devclasses. Each devclass can
have a parent devclass. Searches for drivers continue up the chain of
devclasses until either a matching driver is found or a devclass is
reached which has no parent. This can allow, for instance, pci drivers
to match cardbus devices (assuming that cardbus declares pci as its
parent devclass).
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 1.17 2004/04/15 13:31:41 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, const char *parentname,
111: int create)
112: {
113: devclass_t dc;
114:
115: PDEBUG(("looking for %s", classname));
116: if (classname == NULL)
117: return(NULL);
118:
119: TAILQ_FOREACH(dc, &devclasses, link)
120: if (!strcmp(dc->name, classname))
121: break;
122:
123: if (create && !dc) {
124: PDEBUG(("creating %s", classname));
125: dc = malloc(sizeof(struct devclass) + strlen(classname) + 1,
126: M_BUS, M_INTWAIT | M_ZERO);
127: if (!dc)
128: return(NULL);
129: dc->parent = NULL;
130: dc->name = (char*) (dc + 1);
131: strcpy(dc->name, classname);
132: dc->devices = NULL;
133: dc->maxunit = 0;
134: TAILQ_INIT(&dc->drivers);
135: TAILQ_INSERT_TAIL(&devclasses, dc, link);
136: }
137: if (parentname && dc && !dc->parent)
138: dc->parent = devclass_find_internal(parentname, NULL, FALSE);
139:
140: return(dc);
141: }
142:
143: devclass_t
144: devclass_create(const char *classname)
145: {
146: return(devclass_find_internal(classname, NULL, TRUE));
147: }
148:
149: devclass_t
150: devclass_find(const char *classname)
151: {
152: return(devclass_find_internal(classname, NULL, FALSE));
153: }
154:
155: int
156: devclass_add_driver(devclass_t dc, driver_t *driver)
157: {
158: driverlink_t dl;
159: int i;
160:
161: PDEBUG(("%s", DRIVERNAME(driver)));
162:
163: dl = malloc(sizeof *dl, M_BUS, M_INTWAIT | M_ZERO);
164: if (!dl)
165: return(ENOMEM);
166:
167: /*
168: * Compile the driver's methods. Also increase the reference count
169: * so that the class doesn't get freed when the last instance
170: * goes. This means we can safely use static methods and avoids a
171: * double-free in devclass_delete_driver.
172: */
173: kobj_class_instantiate(driver);
174:
175: /*
176: * Make sure the devclass which the driver is implementing exists.
177: */
178: devclass_find_internal(driver->name, NULL, TRUE);
179:
180: dl->driver = driver;
181: TAILQ_INSERT_TAIL(&dc->drivers, dl, link);
182:
183: /*
184: * Call BUS_DRIVER_ADDED for any existing busses in this class.
185: */
186: for (i = 0; i < dc->maxunit; i++)
187: if (dc->devices[i])
188: BUS_DRIVER_ADDED(dc->devices[i], driver);
189:
190: return(0);
191: }
192:
193: int
194: devclass_delete_driver(devclass_t busclass, driver_t *driver)
195: {
196: devclass_t dc = devclass_find(driver->name);
197: driverlink_t dl;
198: device_t dev;
199: int i;
200: int error;
201:
202: PDEBUG(("%s from devclass %s", driver->name, DEVCLANAME(busclass)));
203:
204: if (!dc)
205: return(0);
206:
207: /*
208: * Find the link structure in the bus' list of drivers.
209: */
210: TAILQ_FOREACH(dl, &busclass->drivers, link)
211: if (dl->driver == driver)
212: break;
213:
214: if (!dl) {
215: PDEBUG(("%s not found in %s list", driver->name, busclass->name));
216: return(ENOENT);
217: }
218:
219: /*
220: * Disassociate from any devices. We iterate through all the
221: * devices in the devclass of the driver and detach any which are
222: * using the driver and which have a parent in the devclass which
223: * we are deleting from.
224: *
225: * Note that since a driver can be in multiple devclasses, we
226: * should not detach devices which are not children of devices in
227: * the affected devclass.
228: */
229: for (i = 0; i < dc->maxunit; i++)
230: if (dc->devices[i]) {
231: dev = dc->devices[i];
232: if (dev->driver == driver && dev->parent &&
233: dev->parent->devclass == busclass) {
234: if ((error = device_detach(dev)) != 0)
235: return(error);
236: device_set_driver(dev, NULL);
237: }
238: }
239:
240: TAILQ_REMOVE(&busclass->drivers, dl, link);
241: free(dl, M_BUS);
242:
243: kobj_class_uninstantiate(driver);
244:
245: return(0);
246: }
247:
248: static driverlink_t
249: devclass_find_driver_internal(devclass_t dc, const char *classname)
250: {
251: driverlink_t dl;
252:
253: PDEBUG(("%s in devclass %s", classname, DEVCLANAME(dc)));
254:
255: TAILQ_FOREACH(dl, &dc->drivers, link)
256: if (!strcmp(dl->driver->name, classname))
257: return(dl);
258:
259: PDEBUG(("not found"));
260: return(NULL);
261: }
262:
263: kobj_class_t
264: devclass_find_driver(devclass_t dc, const char *classname)
265: {
266: driverlink_t dl;
267:
268: dl = devclass_find_driver_internal(dc, classname);
269: if (dl)
270: return(dl->driver);
271: else
272: return(NULL);
273: }
274:
275: const char *
276: devclass_get_name(devclass_t dc)
277: {
278: return(dc->name);
279: }
280:
281: device_t
282: devclass_get_device(devclass_t dc, int unit)
283: {
284: if (dc == NULL || unit < 0 || unit >= dc->maxunit)
285: return(NULL);
286: return(dc->devices[unit]);
287: }
288:
289: void *
290: devclass_get_softc(devclass_t dc, int unit)
291: {
292: device_t dev;
293:
294: dev = devclass_get_device(dc, unit);
295: if (!dev)
296: return(NULL);
297:
298: return(device_get_softc(dev));
299: }
300:
301: int
302: devclass_get_devices(devclass_t dc, device_t **devlistp, int *devcountp)
303: {
304: int i;
305: int count;
306: device_t *list;
307:
308: count = 0;
309: for (i = 0; i < dc->maxunit; i++)
310: if (dc->devices[i])
311: count++;
312:
313: list = malloc(count * sizeof(device_t), M_TEMP, M_INTWAIT | M_ZERO);
314: if (list == NULL)
315: return(ENOMEM);
316:
317: count = 0;
318: for (i = 0; i < dc->maxunit; i++)
319: if (dc->devices[i]) {
320: list[count] = dc->devices[i];
321: count++;
322: }
323:
324: *devlistp = list;
325: *devcountp = count;
326:
327: return(0);
328: }
329:
330: int
331: devclass_get_maxunit(devclass_t dc)
332: {
333: return(dc->maxunit);
334: }
335:
336: void
337: devclass_set_parent(devclass_t dc, devclass_t pdc)
338: {
339: dc->parent = pdc;
340: }
341:
342: devclass_t
343: devclass_get_parent(devclass_t dc)
344: {
345: return(dc->parent);
346: }
347:
348: static int
349: devclass_alloc_unit(devclass_t dc, int *unitp)
350: {
351: int unit = *unitp;
352:
353: PDEBUG(("unit %d in devclass %s", unit, DEVCLANAME(dc)));
354:
355: /* If we have been given a wired unit number, check for existing device */
356: if (unit != -1) {
357: if (unit >= 0 && unit < dc->maxunit &&
358: dc->devices[unit] != NULL) {
359: if (bootverbose)
360: printf("%s-: %s%d exists, using next available unit number\n",
361: dc->name, dc->name, unit);
362: /* find the next available slot */
363: while (++unit < dc->maxunit && dc->devices[unit] != NULL)
364: ;
365: }
366: } else {
367: /* Unwired device, find the next available slot for it */
368: unit = 0;
369: while (unit < dc->maxunit && dc->devices[unit] != NULL)
370: unit++;
371: }
372:
373: /*
374: * We've selected a unit beyond the length of the table, so let's
375: * extend the table to make room for all units up to and including
376: * this one.
377: */
378: if (unit >= dc->maxunit) {
379: device_t *newlist;
380: int newsize;
381:
382: newsize = roundup((unit + 1), MINALLOCSIZE / sizeof(device_t));
383: newlist = malloc(sizeof(device_t) * newsize, M_BUS,
384: M_INTWAIT | M_ZERO);
385: if (newlist == NULL)
386: return(ENOMEM);
387: bcopy(dc->devices, newlist, sizeof(device_t) * dc->maxunit);
388: if (dc->devices)
389: free(dc->devices, M_BUS);
390: dc->devices = newlist;
391: dc->maxunit = newsize;
392: }
393: PDEBUG(("now: unit %d in devclass %s", unit, DEVCLANAME(dc)));
394:
395: *unitp = unit;
396: return(0);
397: }
398:
399: static int
400: devclass_add_device(devclass_t dc, device_t dev)
401: {
402: int buflen, error;
403:
404: PDEBUG(("%s in devclass %s", DEVICENAME(dev), DEVCLANAME(dc)));
405:
406: buflen = strlen(dc->name) + 5;
407: dev->nameunit = malloc(buflen, M_BUS, M_INTWAIT | M_ZERO);
408: if (!dev->nameunit)
409: return(ENOMEM);
410:
411: if ((error = devclass_alloc_unit(dc, &dev->unit)) != 0) {
412: free(dev->nameunit, M_BUS);
413: dev->nameunit = NULL;
414: return(error);
415: }
416: dc->devices[dev->unit] = dev;
417: dev->devclass = dc;
418: snprintf(dev->nameunit, buflen, "%s%d", dc->name, dev->unit);
419:
420: #ifdef DEVICE_SYSCTLS
421: device_register_oids(dev);
422: #endif
423:
424: return(0);
425: }
426:
427: static int
428: devclass_delete_device(devclass_t dc, device_t dev)
429: {
430: if (!dc || !dev)
431: return(0);
432:
433: PDEBUG(("%s in devclass %s", DEVICENAME(dev), DEVCLANAME(dc)));
434:
435: if (dev->devclass != dc || dc->devices[dev->unit] != dev)
436: panic("devclass_delete_device: inconsistent device class");
437: dc->devices[dev->unit] = NULL;
438: if (dev->flags & DF_WILDCARD)
439: dev->unit = -1;
440: dev->devclass = NULL;
441: free(dev->nameunit, M_BUS);
442: dev->nameunit = NULL;
443:
444: #ifdef DEVICE_SYSCTLS
445: device_unregister_oids(dev);
446: #endif
447:
448: return(0);
449: }
450:
451: static device_t
452: make_device(device_t parent, const char *name, int unit)
453: {
454: device_t dev;
455: devclass_t dc;
456:
457: PDEBUG(("%s at %s as unit %d", name, DEVICENAME(parent), unit));
458:
459: if (name != NULL) {
460: dc = devclass_find_internal(name, NULL, TRUE);
461: if (!dc) {
462: printf("make_device: can't find device class %s\n", name);
463: return(NULL);
464: }
465: } else
466: dc = NULL;
467:
468: dev = malloc(sizeof(struct device), M_BUS, M_INTWAIT | M_ZERO);
469: if (!dev)
470: return(0);
471:
472: dev->parent = parent;
473: TAILQ_INIT(&dev->children);
474: kobj_init((kobj_t) dev, &null_class);
475: dev->driver = NULL;
476: dev->devclass = NULL;
477: dev->unit = unit;
478: dev->nameunit = NULL;
479: dev->desc = NULL;
480: dev->busy = 0;
481: dev->devflags = 0;
482: dev->flags = DF_ENABLED;
483: dev->order = 0;
484: if (unit == -1)
485: dev->flags |= DF_WILDCARD;
486: if (name) {
487: dev->flags |= DF_FIXEDCLASS;
488: if (devclass_add_device(dc, dev) != 0) {
489: kobj_delete((kobj_t)dev, M_BUS);
490: return(NULL);
491: }
492: }
493: dev->ivars = NULL;
494: dev->softc = NULL;
495:
496: dev->state = DS_NOTPRESENT;
497:
498: return(dev);
499: }
500:
501: static int
502: device_print_child(device_t dev, device_t child)
503: {
504: int retval = 0;
505:
506: if (device_is_alive(child))
507: retval += BUS_PRINT_CHILD(dev, child);
508: else
509: retval += device_printf(child, " not found\n");
510:
511: return(retval);
512: }
513:
514: device_t
515: device_add_child(device_t dev, const char *name, int unit)
516: {
517: return device_add_child_ordered(dev, 0, name, unit);
518: }
519:
520: device_t
521: device_add_child_ordered(device_t dev, int order, const char *name, int unit)
522: {
523: device_t child;
524: device_t place;
525:
526: PDEBUG(("%s at %s with order %d as unit %d", name, DEVICENAME(dev),
527: order, unit));
528:
529: child = make_device(dev, name, unit);
530: if (child == NULL)
531: return child;
532: child->order = order;
533:
534: TAILQ_FOREACH(place, &dev->children, link)
535: if (place->order > order)
536: break;
537:
538: if (place) {
539: /*
540: * The device 'place' is the first device whose order is
541: * greater than the new child.
542: */
543: TAILQ_INSERT_BEFORE(place, child, link);
544: } else {
545: /*
546: * The new child's order is greater or equal to the order of
547: * any existing device. Add the child to the tail of the list.
548: */
549: TAILQ_INSERT_TAIL(&dev->children, child, link);
550: }
551:
552: return(child);
553: }
554:
555: int
556: device_delete_child(device_t dev, device_t child)
557: {
558: int error;
559: device_t grandchild;
560:
561: PDEBUG(("%s from %s", DEVICENAME(child), DEVICENAME(dev)));
562:
563: /* remove children first */
564: while ( (grandchild = TAILQ_FIRST(&child->children)) ) {
565: error = device_delete_child(child, grandchild);
566: if (error)
567: return(error);
568: }
569:
570: if ((error = device_detach(child)) != 0)
571: return(error);
572: if (child->devclass)
573: devclass_delete_device(child->devclass, child);
574: TAILQ_REMOVE(&dev->children, child, link);
575: device_set_desc(child, NULL);
576: kobj_delete((kobj_t)child, M_BUS);
577:
578: return(0);
579: }
580:
581: /*
582: * Find only devices attached to this bus.
583: */
584: device_t
585: device_find_child(device_t dev, const char *classname, int unit)
586: {
587: devclass_t dc;
588: device_t child;
589:
590: dc = devclass_find(classname);
591: if (!dc)
592: return(NULL);
593:
594: child = devclass_get_device(dc, unit);
595: if (child && child->parent == dev)
596: return(child);
597: return(NULL);
598: }
599:
600: static driverlink_t
601: first_matching_driver(devclass_t dc, device_t dev)
602: {
603: if (dev->devclass)
604: return(devclass_find_driver_internal(dc, dev->devclass->name));
605: else
606: return(TAILQ_FIRST(&dc->drivers));
607: }
608:
609: static driverlink_t
610: next_matching_driver(devclass_t dc, device_t dev, driverlink_t last)
611: {
612: if (dev->devclass) {
613: driverlink_t dl;
614: for (dl = TAILQ_NEXT(last, link); dl; dl = TAILQ_NEXT(dl, link))
615: if (!strcmp(dev->devclass->name, dl->driver->name))
616: return(dl);
617: return(NULL);
618: } else
619: return(TAILQ_NEXT(last, link));
620: }
621:
622: static int
623: device_probe_child(device_t dev, device_t child)
624: {
625: devclass_t dc;
626: driverlink_t best = 0;
627: driverlink_t dl;
628: int result, pri = 0;
629: int hasclass = (child->devclass != 0);
630:
631: dc = dev->devclass;
632: if (!dc)
633: panic("device_probe_child: parent device has no devclass");
634:
635: if (child->state == DS_ALIVE)
636: return(0);
637:
638: for (; dc; dc = dc->parent) {
639: for (dl = first_matching_driver(dc, child); dl;
640: dl = next_matching_driver(dc, child, dl)) {
641: PDEBUG(("Trying %s", DRIVERNAME(dl->driver)));
642: device_set_driver(child, dl->driver);
643: if (!hasclass)
644: device_set_devclass(child, dl->driver->name);
645: result = DEVICE_PROBE(child);
646: if (!hasclass)
647: device_set_devclass(child, 0);
648:
649: /*
650: * If the driver returns SUCCESS, there can be
651: * no higher match for this device.
652: */
653: if (result == 0) {
654: best = dl;
655: pri = 0;
656: break;
657: }
658:
659: /*
660: * The driver returned an error so it
661: * certainly doesn't match.
662: */
663: if (result > 0) {
664: device_set_driver(child, 0);
665: continue;
666: }
667:
668: /*
669: * A priority lower than SUCCESS, remember the
670: * best matching driver. Initialise the value
671: * of pri for the first match.
672: */
673: if (best == 0 || result > pri) {
674: best = dl;
675: pri = result;
676: continue;
677: }
678: }
679: /*
680: * If we have unambiguous match in this devclass,
681: * don't look in the parent.
682: */
683: if (best && pri == 0)
684: break;
685: }
686:
687: /*
688: * If we found a driver, change state and initialise the devclass.
689: */
690: if (best) {
691: if (!child->devclass)
692: device_set_devclass(child, best->driver->name);
693: device_set_driver(child, best->driver);
694: if (pri < 0) {
695: /*
696: * A bit bogus. Call the probe method again to make
697: * sure that we have the right description.
698: */
699: DEVICE_PROBE(child);
700: }
701: child->state = DS_ALIVE;
702: return(0);
703: }
704:
705: return(ENXIO);
706: }
707:
708: device_t
709: device_get_parent(device_t dev)
710: {
711: return dev->parent;
712: }
713:
714: int
715: device_get_children(device_t dev, device_t **devlistp, int *devcountp)
716: {
717: int count;
718: device_t child;
719: device_t *list;
720:
721: count = 0;
722: TAILQ_FOREACH(child, &dev->children, link)
723: count++;
724:
725: list = malloc(count * sizeof(device_t), M_TEMP, M_INTWAIT | M_ZERO);
726: if (!list)
727: return(ENOMEM);
728:
729: count = 0;
730: TAILQ_FOREACH(child, &dev->children, link) {
731: list[count] = child;
732: count++;
733: }
734:
735: *devlistp = list;
736: *devcountp = count;
737:
738: return(0);
739: }
740:
741: driver_t *
742: device_get_driver(device_t dev)
743: {
744: return(dev->driver);
745: }
746:
747: devclass_t
748: device_get_devclass(device_t dev)
749: {
750: return(dev->devclass);
751: }
752:
753: const char *
754: device_get_name(device_t dev)
755: {
756: if (dev->devclass)
757: return devclass_get_name(dev->devclass);
758: return(NULL);
759: }
760:
761: const char *
762: device_get_nameunit(device_t dev)
763: {
764: return(dev->nameunit);
765: }
766:
767: int
768: device_get_unit(device_t dev)
769: {
770: return(dev->unit);
771: }
772:
773: const char *
774: device_get_desc(device_t dev)
775: {
776: return(dev->desc);
777: }
778:
779: uint32_t
780: device_get_flags(device_t dev)
781: {
782: return(dev->devflags);
783: }
784:
785: int
786: device_print_prettyname(device_t dev)
787: {
788: const char *name = device_get_name(dev);
789:
790: if (name == 0)
791: return printf("unknown: ");
792: else
793: return printf("%s%d: ", name, device_get_unit(dev));
794: }
795:
796: int
797: device_printf(device_t dev, const char * fmt, ...)
798: {
799: __va_list ap;
800: int retval;
801:
802: retval = device_print_prettyname(dev);
803: __va_start(ap, fmt);
804: retval += vprintf(fmt, ap);
805: __va_end(ap);
806: return retval;
807: }
808:
809: static void
810: device_set_desc_internal(device_t dev, const char* desc, int copy)
811: {
812: if (dev->desc && (dev->flags & DF_DESCMALLOCED)) {
813: free(dev->desc, M_BUS);
814: dev->flags &= ~DF_DESCMALLOCED;
815: dev->desc = NULL;
816: }
817:
818: if (copy && desc) {
819: dev->desc = malloc(strlen(desc) + 1, M_BUS, M_INTWAIT);
820: if (dev->desc) {
821: strcpy(dev->desc, desc);
822: dev->flags |= DF_DESCMALLOCED;
823: }
824: } else
825: /* Avoid a -Wcast-qual warning */
826: dev->desc = (char *)(uintptr_t) desc;
827:
828: #ifdef DEVICE_SYSCTLS
829: {
830: struct sysctl_oid *oid = &dev->oid[1];
831: oid->oid_arg1 = dev->desc ? dev->desc : "";
832: oid->oid_arg2 = dev->desc ? strlen(dev->desc) : 0;
833: }
834: #endif
835: }
836:
837: void
838: device_set_desc(device_t dev, const char* desc)
839: {
840: device_set_desc_internal(dev, desc, FALSE);
841: }
842:
843: void
844: device_set_desc_copy(device_t dev, const char* desc)
845: {
846: device_set_desc_internal(dev, desc, TRUE);
847: }
848:
849: void
850: device_set_flags(device_t dev, uint32_t flags)
851: {
852: dev->devflags = flags;
853: }
854:
855: void *
856: device_get_softc(device_t dev)
857: {
858: return dev->softc;
859: }
860:
861: void
862: device_set_softc(device_t dev, void *softc)
863: {
864: if (dev->softc && !(dev->flags & DF_EXTERNALSOFTC))
865: free(dev->softc, M_BUS);
866: dev->softc = softc;
867: if (dev->softc)
868: dev->flags |= DF_EXTERNALSOFTC;
869: else
870: dev->flags &= ~DF_EXTERNALSOFTC;
871: }
872:
873: void *
874: device_get_ivars(device_t dev)
875: {
876: return dev->ivars;
877: }
878:
879: void
880: device_set_ivars(device_t dev, void * ivars)
881: {
882: if (!dev)
883: return;
884:
885: dev->ivars = ivars;
886: }
887:
888: device_state_t
889: device_get_state(device_t dev)
890: {
891: return(dev->state);
892: }
893:
894: void
895: device_enable(device_t dev)
896: {
897: dev->flags |= DF_ENABLED;
898: }
899:
900: void
901: device_disable(device_t dev)
902: {
903: dev->flags &= ~DF_ENABLED;
904: }
905:
906: /*
907: * YYY cannot block
908: */
909: void
910: device_busy(device_t dev)
911: {
912: if (dev->state < DS_ATTACHED)
913: panic("device_busy: called for unattached device");
914: if (dev->busy == 0 && dev->parent)
915: device_busy(dev->parent);
916: dev->busy++;
917: dev->state = DS_BUSY;
918: }
919:
920: /*
921: * YYY cannot block
922: */
923: void
924: device_unbusy(device_t dev)
925: {
926: if (dev->state != DS_BUSY)
927: panic("device_unbusy: called for non-busy device");
928: dev->busy--;
929: if (dev->busy == 0) {
930: if (dev->parent)
931: device_unbusy(dev->parent);
932: dev->state = DS_ATTACHED;
933: }
934: }
935:
936: void
937: device_quiet(device_t dev)
938: {
939: dev->flags |= DF_QUIET;
940: }
941:
942: void
943: device_verbose(device_t dev)
944: {
945: dev->flags &= ~DF_QUIET;
946: }
947:
948: int
949: device_is_quiet(device_t dev)
950: {
951: return((dev->flags & DF_QUIET) != 0);
952: }
953:
954: int
955: device_is_enabled(device_t dev)
956: {
957: return((dev->flags & DF_ENABLED) != 0);
958: }
959:
960: int
961: device_is_alive(device_t dev)
962: {
963: return(dev->state >= DS_ALIVE);
964: }
965:
966: int
967: device_is_attached(device_t dev)
968: {
969: return(dev->state >= DS_ATTACHED);
970: }
971:
972: int
973: device_set_devclass(device_t dev, const char *classname)
974: {
975: devclass_t dc;
976:
977: if (!classname) {
978: if (dev->devclass)
979: devclass_delete_device(dev->devclass, dev);
980: return(0);
981: }
982:
983: if (dev->devclass) {
984: printf("device_set_devclass: device class already set\n");
985: return(EINVAL);
986: }
987:
988: dc = devclass_find_internal(classname, NULL, TRUE);
989: if (!dc)
990: return(ENOMEM);
991:
992: return(devclass_add_device(dc, dev));
993: }
994:
995: int
996: device_set_driver(device_t dev, driver_t *driver)
997: {
998: if (dev->state >= DS_ATTACHED)
999: return(EBUSY);
1000:
1001: if (dev->driver == driver)
1002: return(0);
1003:
1004: if (dev->softc && !(dev->flags & DF_EXTERNALSOFTC)) {
1005: free(dev->softc, M_BUS);
1006: dev->softc = NULL;
1007: }
1008: kobj_delete((kobj_t) dev, 0);
1009: dev->driver = driver;
1010: if (driver) {
1011: kobj_init((kobj_t) dev, (kobj_class_t) driver);
1012: if (!(dev->flags & DF_EXTERNALSOFTC)) {
1013: dev->softc = malloc(driver->size, M_BUS,
1014: M_INTWAIT | M_ZERO);
1015: if (!dev->softc) {
1016: kobj_delete((kobj_t)dev, 0);
1017: kobj_init((kobj_t) dev, &null_class);
1018: dev->driver = NULL;
1019: return(ENOMEM);
1020: }
1021: }
1022: } else
1023: kobj_init((kobj_t) dev, &null_class);
1024: return(0);
1025: }
1026:
1027: int
1028: device_probe_and_attach(device_t dev)
1029: {
1030: device_t bus = dev->parent;
1031: int error = 0;
1032: int hasclass = (dev->devclass != 0);
1033:
1034: if (dev->state >= DS_ALIVE)
1035: return(0);
1036:
1037: if ((dev->flags & DF_ENABLED) == 0) {
1038: if (bootverbose) {
1039: device_print_prettyname(dev);
1040: printf("not probed (disabled)\n");
1041: }
1042: return(0);
1043: }
1044:
1045: error = device_probe_child(bus, dev);
1046: if (error) {
1047: if (!(dev->flags & DF_DONENOMATCH)) {
1048: BUS_PROBE_NOMATCH(bus, dev);
1049: dev->flags |= DF_DONENOMATCH;
1050: }
1051: return(error);
1052: }
1053:
1054: if (!device_is_quiet(dev))
1055: device_print_child(bus, dev);
1056: error = DEVICE_ATTACH(dev);
1057: if (!error)
1058: dev->state = DS_ATTACHED;
1059: else {
1060: printf("device_probe_and_attach: %s%d attach returned %d\n",
1061: dev->driver->name, dev->unit, error);
1062: /* Unset the class that was set in device_probe_child */
1063: if (!hasclass)
1064: device_set_devclass(dev, 0);
1065: device_set_driver(dev, NULL);
1066: dev->state = DS_NOTPRESENT;
1067: }
1068:
1069: return(error);
1070: }
1071:
1072: int
1073: device_detach(device_t dev)
1074: {
1075: int error;
1076:
1077: PDEBUG(("%s", DEVICENAME(dev)));
1078: if (dev->state == DS_BUSY)
1079: return(EBUSY);
1080: if (dev->state != DS_ATTACHED)
1081: return(0);
1082:
1083: if ((error = DEVICE_DETACH(dev)) != 0)
1084: return(error);
1085: device_printf(dev, "detached\n");
1086: if (dev->parent)
1087: BUS_CHILD_DETACHED(dev->parent, dev);
1088:
1089: if (!(dev->flags & DF_FIXEDCLASS))
1090: devclass_delete_device(dev->devclass, dev);
1091:
1092: dev->state = DS_NOTPRESENT;
1093: device_set_driver(dev, NULL);
1094:
1095: return(0);
1096: }
1097:
1098: int
1099: device_shutdown(device_t dev)
1100: {
1101: if (dev->state < DS_ATTACHED)
1102: return 0;
1103: return DEVICE_SHUTDOWN(dev);
1104: }
1105:
1106: int
1107: device_set_unit(device_t dev, int unit)
1108: {
1109: devclass_t dc;
1110: int err;
1111:
1112: dc = device_get_devclass(dev);
1113: if (unit < dc->maxunit && dc->devices[unit])
1114: return(EBUSY);
1115: err = devclass_delete_device(dc, dev);
1116: if (err)
1117: return(err);
1118: dev->unit = unit;
1119: err = devclass_add_device(dc, dev);
1120: return(err);
1121: }
1122:
1123: #ifdef DEVICE_SYSCTLS
1124:
1125: /*
1126: * Sysctl nodes for devices.
1127: */
1128:
1129: SYSCTL_NODE(_hw, OID_AUTO, devices, CTLFLAG_RW, 0, "A list of all devices");
1130:
1131: static int
1132: sysctl_handle_children(SYSCTL_HANDLER_ARGS)
1133: {
1134: device_t dev = arg1;
1135: device_t child;
1136: int first = 1, error = 0;
1137:
1138: TAILQ_FOREACH(child, &dev->children, link)
1139: if (child->nameunit) {
1140: if (!first) {
1141: error = SYSCTL_OUT(req, ",", 1);
1142: if (error)
1143: return error;
1144: } else
1145: first = 0;
1146: error = SYSCTL_OUT(req, child->nameunit,
1147: strlen(child->nameunit));
1148: if (error)
1149: return(error);
1150: }
1151:
1152: error = SYSCTL_OUT(req, "", 1);
1153:
1154: return(error);
1155: }
1156:
1157: static int
1158: sysctl_handle_state(SYSCTL_HANDLER_ARGS)
1159: {
1160: device_t dev = arg1;
1161:
1162: switch (dev->state) {
1163: case DS_NOTPRESENT:
1164: return SYSCTL_OUT(req, "notpresent", sizeof("notpresent"));
1165: case DS_ALIVE:
1166: return SYSCTL_OUT(req, "alive", sizeof("alive"));
1167: case DS_ATTACHED:
1168: return SYSCTL_OUT(req, "attached", sizeof("attached"));
1169: case DS_BUSY:
1170: return SYSCTL_OUT(req, "busy", sizeof("busy"));
1171: default:
1172: return (0);
1173: }
1174: }
1175:
1176: static void
1177: device_register_oids(device_t dev)
1178: {
1179: struct sysctl_oid* oid;
1180:
1181: oid = &dev->oid[0];
1182: bzero(oid, sizeof(*oid));
1183: oid->oid_parent = &sysctl__hw_devices_children;
1184: oid->oid_number = OID_AUTO;
1185: oid->oid_kind = CTLTYPE_NODE | CTLFLAG_RW;
1186: oid->oid_arg1 = &dev->oidlist[0];
1187: oid->oid_arg2 = 0;
1188: oid->oid_name = dev->nameunit;
1189: oid->oid_handler = 0;
1190: oid->oid_fmt = "N";
1191: SLIST_INIT(&dev->oidlist[0]);
1192: sysctl_register_oid(oid);
1193:
1194: oid = &dev->oid[1];
1195: bzero(oid, sizeof(*oid));
1196: oid->oid_parent = &dev->oidlist[0];
1197: oid->oid_number = OID_AUTO;
1198: oid->oid_kind = CTLTYPE_STRING | CTLFLAG_RD;
1199: oid->oid_arg1 = dev->desc ? dev->desc : "";
1200: oid->oid_arg2 = dev->desc ? strlen(dev->desc) : 0;
1201: oid->oid_name = "desc";
1202: oid->oid_handler = sysctl_handle_string;
1203: oid->oid_fmt = "A";
1204: sysctl_register_oid(oid);
1205:
1206: oid = &dev->oid[2];
1207: bzero(oid, sizeof(*oid));
1208: oid->oid_parent = &dev->oidlist[0];
1209: oid->oid_number = OID_AUTO;
1210: oid->oid_kind = CTLTYPE_INT | CTLFLAG_RD;
1211: oid->oid_arg1 = dev;
1212: oid->oid_arg2 = 0;
1213: oid->oid_name = "children";
1214: oid->oid_handler = sysctl_handle_children;
1215: oid->oid_fmt = "A";
1216: sysctl_register_oid(oid);
1217:
1218: oid = &dev->oid[3];
1219: bzero(oid, sizeof(*oid));
1220: oid->oid_parent = &dev->oidlist[0];
1221: oid->oid_number = OID_AUTO;
1222: oid->oid_kind = CTLTYPE_INT | CTLFLAG_RD;
1223: oid->oid_arg1 = dev;
1224: oid->oid_arg2 = 0;
1225: oid->oid_name = "state";
1226: oid->oid_handler = sysctl_handle_state;
1227: oid->oid_fmt = "A";
1228: sysctl_register_oid(oid);
1229: }
1230:
1231: static void
1232: device_unregister_oids(device_t dev)
1233: {
1234: sysctl_unregister_oid(&dev->oid[0]);
1235: sysctl_unregister_oid(&dev->oid[1]);
1236: sysctl_unregister_oid(&dev->oid[2]);
1237: }
1238:
1239: #endif
1240:
1241: /*======================================*/
1242: /*
1243: * Access functions for device resources.
1244: */
1245:
1246: /* Supplied by config(8) in ioconf.c */
1247: extern struct config_device config_devtab[];
1248: extern int devtab_count;
1249:
1250: /* Runtime version */
1251: struct config_device *devtab = config_devtab;
1252:
1253: static int
1254: resource_new_name(const char *name, int unit)
1255: {
1256: struct config_device *new;
1257:
1258: new = malloc((devtab_count + 1) * sizeof(*new), M_TEMP,
1259: M_INTWAIT | M_ZERO);
1260: if (new == NULL)
1261: return(-1);
1262: if (devtab && devtab_count > 0)
1263: bcopy(devtab, new, devtab_count * sizeof(*new));
1264: new[devtab_count].name = malloc(strlen(name) + 1, M_TEMP, M_INTWAIT);
1265: if (new[devtab_count].name == NULL) {
1266: free(new, M_TEMP);
1267: return(-1);
1268: }
1269: strcpy(new[devtab_count].name, name);
1270: new[devtab_count].unit = unit;
1271: new[devtab_count].resource_count = 0;
1272: new[devtab_count].resources = NULL;
1273: devtab = new;
1274: return devtab_count++;
1275: }
1276:
1277: static int
1278: resource_new_resname(int j, const char *resname, resource_type type)
1279: {
1280: struct config_resource *new;
1281: int i;
1282:
1283: i = devtab[j].resource_count;
1284: new = malloc((i + 1) * sizeof(*new), M_TEMP, M_INTWAIT | M_ZERO);
1285: if (new == NULL)
1286: return(-1);
1287: if (devtab[j].resources && i > 0)
1288: bcopy(devtab[j].resources, new, i * sizeof(*new));
1289: new[i].name = malloc(strlen(resname) + 1, M_TEMP, M_INTWAIT);
1290: if (new[i].name == NULL) {
1291: free(new, M_TEMP);
1292: return(-1);
1293: }
1294: strcpy(new[i].name, resname);
1295: new[i].type = type;
1296: if (devtab[j].resources)
1297: free(devtab[j].resources, M_TEMP);
1298: devtab[j].resources = new;
1299: devtab[j].resource_count = i + 1;
1300: return(i);
1301: }
1302:
1303: static int
1304: resource_match_string(int i, const char *resname, const char *value)
1305: {
1306: int j;
1307: struct config_resource *res;
1308:
1309: for (j = 0, res = devtab[i].resources;
1310: j < devtab[i].resource_count; j++, res++)
1311: if (!strcmp(res->name, resname)
1312: && res->type == RES_STRING
1313: && !strcmp(res->u.stringval, value))
1314: return(j);
1315: return(-1);
1316: }
1317:
1318: static int
1319: resource_find(const char *name, int unit, const char *resname,
1320: struct config_resource **result)
1321: {
1322: int i, j;
1323: struct config_resource *res;
1324:
1325: /*
1326: * First check specific instances, then generic.
1327: */
1328: for (i = 0; i < devtab_count; i++) {
1329: if (devtab[i].unit < 0)
1330: continue;
1331: if (!strcmp(devtab[i].name, name) && devtab[i].unit == unit) {
1332: res = devtab[i].resources;
1333: for (j = 0; j < devtab[i].resource_count; j++, res++)
1334: if (!strcmp(res->name, resname)) {
1335: *result = res;
1336: return(0);
1337: }
1338: }
1339: }
1340: for (i = 0; i < devtab_count; i++) {
1341: if (devtab[i].unit >= 0)
1342: continue;
1343: /* XXX should this `&& devtab[i].unit == unit' be here? */
1344: /* XXX if so, then the generic match does nothing */
1345: if (!strcmp(devtab[i].name, name) && devtab[i].unit == unit) {
1346: res = devtab[i].resources;
1347: for (j = 0; j < devtab[i].resource_count; j++, res++)
1348: if (!strcmp(res->name, resname)) {
1349: *result = res;
1350: return(0);
1351: }
1352: }
1353: }
1354: return(ENOENT);
1355: }
1356:
1357: int
1358: resource_int_value(const char *name, int unit, const char *resname, int *result)
1359: {
1360: int error;
1361: struct config_resource *res;
1362:
1363: if ((error = resource_find(name, unit, resname, &res)) != 0)
1364: return(error);
1365: if (res->type != RES_INT)
1366: return(EFTYPE);
1367: *result = res->u.intval;
1368: return(0);
1369: }
1370:
1371: int
1372: resource_long_value(const char *name, int unit, const char *resname,
1373: long *result)
1374: {
1375: int error;
1376: struct config_resource *res;
1377:
1378: if ((error = resource_find(name, unit, resname, &res)) != 0)
1379: return(error);
1380: if (res->type != RES_LONG)
1381: return(EFTYPE);
1382: *result = res->u.longval;
1383: return(0);
1384: }
1385:
1386: int
1387: resource_string_value(const char *name, int unit, const char *resname,
1388: char **result)
1389: {
1390: int error;
1391: struct config_resource *res;
1392:
1393: if ((error = resource_find(name, unit, resname, &res)) != 0)
1394: return(error);
1395: if (res->type != RES_STRING)
1396: return(EFTYPE);
1397: *result = res->u.stringval;
1398: return(0);
1399: }
1400:
1401: int
1402: resource_query_string(int i, const char *resname, const char *value)
1403: {
1404: if (i < 0)
1405: i = 0;
1406: else
1407: i = i + 1;
1408: for (; i < devtab_count; i++)
1409: if (resource_match_string(i, resname, value) >= 0)
1410: return(i);
1411: return(-1);
1412: }
1413:
1414: int
1415: resource_locate(int i, const char *resname)
1416: {
1417: if (i < 0)
1418: i = 0;
1419: else
1420: i = i + 1;
1421: for (; i < devtab_count; i++)
1422: if (!strcmp(devtab[i].name, resname))
1423: return(i);
1424: return(-1);
1425: }
1426:
1427: int
1428: resource_count(void)
1429: {
1430: return(devtab_count);
1431: }
1432:
1433: char *
1434: resource_query_name(int i)
1435: {
1436: return(devtab[i].name);
1437: }
1438:
1439: int
1440: resource_query_unit(int i)
1441: {
1442: return(devtab[i].unit);
1443: }
1444:
1445: static int
1446: resource_create(const char *name, int unit, const char *resname,
1447: resource_type type, struct config_resource **result)
1448: {
1449: int i, j;
1450: struct config_resource *res = NULL;
1451:
1452: for (i = 0; i < devtab_count; i++)
1453: if (!strcmp(devtab[i].name, name) && devtab[i].unit == unit) {
1454: res = devtab[i].resources;
1455: break;
1456: }
1457: if (res == NULL) {
1458: i = resource_new_name(name, unit);
1459: if (i < 0)
1460: return(ENOMEM);
1461: res = devtab[i].resources;
1462: }
1463: for (j = 0; j < devtab[i].resource_count; j++, res++)
1464: if (!strcmp(res->name, resname)) {
1465: *result = res;
1466: return(0);
1467: }
1468: j = resource_new_resname(i, resname, type);
1469: if (j < 0)
1470: return(ENOMEM);
1471: res = &devtab[i].resources[j];
1472: *result = res;
1473: return(0);
1474: }
1475:
1476: int
1477: resource_set_int(const char *name, int unit, const char *resname, int value)
1478: {
1479: int error;
1480: struct config_resource *res;
1481:
1482: error = resource_create(name, unit, resname, RES_INT, &res);
1483: if (error)
1484: return(error);
1485: if (res->type != RES_INT)
1486: return(EFTYPE);
1487: res->u.intval = value;
1488: return(0);
1489: }
1490:
1491: int
1492: resource_set_long(const char *name, int unit, const char *resname, long value)
1493: {
1494: int error;
1495: struct config_resource *res;
1496:
1497: error = resource_create(name, unit, resname, RES_LONG, &res);
1498: if (error)
1499: return(error);
1500: if (res->type != RES_LONG)
1501: return(EFTYPE);
1502: res->u.longval = value;
1503: return(0);
1504: }
1505:
1506: int
1507: resource_set_string(const char *name, int unit, const char *resname,
1508: const char *value)
1509: {
1510: int error;
1511: struct config_resource *res;
1512:
1513: error = resource_create(name, unit, resname, RES_STRING, &res);
1514: if (error)
1515: return(error);
1516: if (res->type != RES_STRING)
1517: return(EFTYPE);
1518: if (res->u.stringval)
1519: free(res->u.stringval, M_TEMP);
1520: res->u.stringval = malloc(strlen(value) + 1, M_TEMP, M_INTWAIT);
1521: if (res->u.stringval == NULL)
1522: return(ENOMEM);
1523: strcpy(res->u.stringval, value);
1524: return(0);
1525: }
1526:
1527: static void
1528: resource_cfgload(void *dummy __unused)
1529: {
1530: struct config_resource *res, *cfgres;
1531: int i, j;
1532: int error;
1533: char *name, *resname;
1534: int unit;
1535: resource_type type;
1536: char *stringval;
1537: int config_devtab_count;
1538:
1539: config_devtab_count = devtab_count;
1540: devtab = NULL;
1541: devtab_count = 0;
1542:
1543: for (i = 0; i < config_devtab_count; i++) {
1544: name = config_devtab[i].name;
1545: unit = config_devtab[i].unit;
1546:
1547: for (j = 0; j < config_devtab[i].resource_count; j++) {
1548: cfgres = config_devtab[i].resources;
1549: resname = cfgres[j].name;
1550: type = cfgres[j].type;
1551: error = resource_create(name, unit, resname, type,
1552: &res);
1553: if (error) {
1554: printf("create resource %s%d: error %d\n",
1555: name, unit, error);
1556: continue;
1557: }
1558: if (res->type != type) {
1559: printf("type mismatch %s%d: %d != %d\n",
1560: name, unit, res->type, type);
1561: continue;
1562: }
1563: switch (type) {
1564: case RES_INT:
1565: res->u.intval = cfgres[j].u.intval;
1566: break;
1567: case RES_LONG:
1568: res->u.longval = cfgres[j].u.longval;
1569: break;
1570: case RES_STRING:
1571: if (res->u.stringval)
1572: free(res->u.stringval, M_TEMP);
1573: stringval = cfgres[j].u.stringval;
1574: res->u.stringval = malloc(strlen(stringval) + 1,
1575: M_TEMP, M_INTWAIT);
1576: if (res->u.stringval == NULL)
1577: break;
1578: strcpy(res->u.stringval, stringval);
1579: break;
1580: default:
1581: panic("unknown resource type %d\n", type);
1582: }
1583: }
1584: }
1585: }
1586: SYSINIT(cfgload, SI_SUB_KMEM, SI_ORDER_ANY + 50, resource_cfgload, 0)
1587:
1588:
1589: /*======================================*/
1590: /*
1591: * Some useful method implementations to make life easier for bus drivers.
1592: */
1593:
1594: void
1595: resource_list_init(struct resource_list *rl)
1596: {
1597: SLIST_INIT(rl);
1598: }
1599:
1600: void
1601: resource_list_free(struct resource_list *rl)
1602: {
1603: struct resource_list_entry *rle;
1604:
1605: while ((rle = SLIST_FIRST(rl)) != NULL) {
1606: if (rle->res)
1607: panic("resource_list_free: resource entry is busy");
1608: SLIST_REMOVE_HEAD(rl, link);
1609: free(rle, M_BUS);
1610: }
1611: }
1612:
1613: void
1614: resource_list_add(struct resource_list *rl,
1615: int type, int rid,
1616: u_long start, u_long end, u_long count)
1617: {
1618: struct resource_list_entry *rle;
1619:
1620: rle = resource_list_find(rl, type, rid);
1621: if (rle == NULL) {
1622: rle = malloc(sizeof(struct resource_list_entry), M_BUS,
1623: M_INTWAIT);
1624: if (!rle)
1625: panic("resource_list_add: can't record entry");
1626: SLIST_INSERT_HEAD(rl, rle, link);
1627: rle->type = type;
1628: rle->rid = rid;
1629: rle->res = NULL;
1630: }
1631:
1632: if (rle->res)
1633: panic("resource_list_add: resource entry is busy");
1634:
1635: rle->start = start;
1636: rle->end = end;
1637: rle->count = count;
1638: }
1639:
1640: struct resource_list_entry*
1641: resource_list_find(struct resource_list *rl,
1642: int type, int rid)
1643: {
1644: struct resource_list_entry *rle;
1645:
1646: SLIST_FOREACH(rle, rl, link)
1647: if (rle->type == type && rle->rid == rid)
1648: return(rle);
1649: return(NULL);
1650: }
1651:
1652: void
1653: resource_list_delete(struct resource_list *rl,
1654: int type, int rid)
1655: {
1656: struct resource_list_entry *rle = resource_list_find(rl, type, rid);
1657:
1658: if (rle) {
1659: SLIST_REMOVE(rl, rle, resource_list_entry, link);
1660: free(rle, M_BUS);
1661: }
1662: }
1663:
1664: struct resource *
1665: resource_list_alloc(struct resource_list *rl,
1666: device_t bus, device_t child,
1667: int type, int *rid,
1668: u_long start, u_long end,
1669: u_long count, u_int flags)
1670: {
1671: struct resource_list_entry *rle = 0;
1672: int passthrough = (device_get_parent(child) != bus);
1673: int isdefault = (start == 0UL && end == ~0UL);
1674:
1675: if (passthrough) {
1676: return(BUS_ALLOC_RESOURCE(device_get_parent(bus), child,
1677: type, rid,
1678: start, end, count, flags));
1679: }
1680:
1681: rle = resource_list_find(rl, type, *rid);
1682:
1683: if (!rle)
1684: return(0); /* no resource of that type/rid */
1685: if (rle->res)
1686: panic("resource_list_alloc: resource entry is busy");
1687:
1688: if (isdefault) {
1689: start = rle->start;
1690: count = max(count, rle->count);
1691: end = max(rle->end, start + count - 1);
1692: }
1693:
1694: rle->res = BUS_ALLOC_RESOURCE(device_get_parent(bus), child,
1695: type, rid, start, end, count, flags);
1696:
1697: /*
1698: * Record the new range.
1699: */
1700: if (rle->res) {
1701: rle->start = rman_get_start(rle->res);
1702: rle->end = rman_get_end(rle->res);
1703: rle->count = count;
1704: }
1705:
1706: return(rle->res);
1707: }
1708:
1709: int
1710: resource_list_release(struct resource_list *rl,
1711: device_t bus, device_t child,
1712: int type, int rid, struct resource *res)
1713: {
1714: struct resource_list_entry *rle = 0;
1715: int passthrough = (device_get_parent(child) != bus);
1716: int error;
1717:
1718: if (passthrough) {
1719: return(BUS_RELEASE_RESOURCE(device_get_parent(bus), child,
1720: type, rid, res));
1721: }
1722:
1723: rle = resource_list_find(rl, type, rid);
1724:
1725: if (!rle)
1726: panic("resource_list_release: can't find resource");
1727: if (!rle->res)
1728: panic("resource_list_release: resource entry is not busy");
1729:
1730: error = BUS_RELEASE_RESOURCE(device_get_parent(bus), child,
1731: type, rid, res);
1732: if (error)
1733: return(error);
1734:
1735: rle->res = NULL;
1736: return(0);
1737: }
1738:
1739: int
1740: resource_list_print_type(struct resource_list *rl, const char *name, int type,
1741: const char *format)
1742: {
1743: struct resource_list_entry *rle;
1744: int printed, retval;
1745:
1746: printed = 0;
1747: retval = 0;
1748: /* Yes, this is kinda cheating */
1749: SLIST_FOREACH(rle, rl, link) {
1750: if (rle->type == type) {
1751: if (printed == 0)
1752: retval += printf(" %s ", name);
1753: else
1754: retval += printf(",");
1755: printed++;
1756: retval += printf(format, rle->start);
1757: if (rle->count > 1) {
1758: retval += printf("-");
1759: retval += printf(format, rle->start +
1760: rle->count - 1);
1761: }
1762: }
1763: }
1764: return(retval);
1765: }
1766:
1767: /*
1768: * Call DEVICE_IDENTIFY for each driver.
1769: */
1770: int
1771: bus_generic_probe(device_t dev)
1772: {
1773: devclass_t dc = dev->devclass;
1774: driverlink_t dl;
1775:
1776: TAILQ_FOREACH(dl, &dc->drivers, link)
1777: DEVICE_IDENTIFY(dl->driver, dev);
1778:
1779: return(0);
1780: }
1781:
1782: int
1783: bus_generic_attach(device_t dev)
1784: {
1785: device_t child;
1786:
1787: TAILQ_FOREACH(child, &dev->children, link)
1788: device_probe_and_attach(child);
1789:
1790: return(0);
1791: }
1792:
1793: int
1794: bus_generic_detach(device_t dev)
1795: {
1796: device_t child;
1797: int error;
1798:
1799: if (dev->state != DS_ATTACHED)
1800: return(EBUSY);
1801:
1802: TAILQ_FOREACH(child, &dev->children, link)
1803: if ((error = device_detach(child)) != 0)
1804: return(error);
1805:
1806: return 0;
1807: }
1808:
1809: int
1810: bus_generic_shutdown(device_t dev)
1811: {
1812: device_t child;
1813:
1814: TAILQ_FOREACH(child, &dev->children, link)
1815: device_shutdown(child);
1816:
1817: return(0);
1818: }
1819:
1820: int
1821: bus_generic_suspend(device_t dev)
1822: {
1823: int error;
1824: device_t child, child2;
1825:
1826: TAILQ_FOREACH(child, &dev->children, link) {
1827: error = DEVICE_SUSPEND(child);
1828: if (error) {
1829: for (child2 = TAILQ_FIRST(&dev->children);
1830: child2 && child2 != child;
1831: child2 = TAILQ_NEXT(child2, link))
1832: DEVICE_RESUME(child2);
1833: return(error);
1834: }
1835: }
1836: return(0);
1837: }
1838:
1839: int
1840: bus_generic_resume(device_t dev)
1841: {
1842: device_t child;
1843:
1844: TAILQ_FOREACH(child, &dev->children, link)
1845: DEVICE_RESUME(child);
1846: /* if resume fails, there's nothing we can usefully do... */
1847:
1848: return(0);
1849: }
1850:
1851: int
1852: bus_print_child_header(device_t dev, device_t child)
1853: {
1854: int retval = 0;
1855:
1856: if (device_get_desc(child))
1857: retval += device_printf(child, "<%s>", device_get_desc(child));
1858: else
1859: retval += printf("%s", device_get_nameunit(child));
1860:
1861: return(retval);
1862: }
1863:
1864: int
1865: bus_print_child_footer(device_t dev, device_t child)
1866: {
1867: return(printf(" on %s\n", device_get_nameunit(dev)));
1868: }
1869:
1870: int
1871: bus_generic_print_child(device_t dev, device_t child)
1872: {
1873: int retval = 0;
1874:
1875: retval += bus_print_child_header(dev, child);
1876: retval += bus_print_child_footer(dev, child);
1877:
1878: return(retval);
1879: }
1880:
1881: int
1882: bus_generic_read_ivar(device_t dev, device_t child, int index,
1883: uintptr_t * result)
1884: {
1885: return(ENOENT);
1886: }
1887:
1888: int
1889: bus_generic_write_ivar(device_t dev, device_t child, int index,
1890: uintptr_t value)
1891: {
1892: return(ENOENT);
1893: }
1894:
1895: struct resource_list *
1896: bus_generic_get_resource_list(device_t dev, device_t child)
1897: {
1898: return(NULL);
1899: }
1900:
1901: void
1902: bus_generic_driver_added(device_t dev, driver_t *driver)
1903: {
1904: device_t child;
1905:
1906: DEVICE_IDENTIFY(driver, dev);
1907: TAILQ_FOREACH(child, &dev->children, link)
1908: if (child->state == DS_NOTPRESENT)
1909: device_probe_and_attach(child);
1910: }
1911:
1912: int
1913: bus_generic_setup_intr(device_t dev, device_t child, struct resource *irq,
1914: int flags, driver_intr_t *intr, void *arg,
1915: void **cookiep)
1916: {
1917: /* Propagate up the bus hierarchy until someone handles it. */
1918: if (dev->parent)
1919: return(BUS_SETUP_INTR(dev->parent, child, irq, flags,
1920: intr, arg, cookiep));
1921: else
1922: return(EINVAL);
1923: }
1924:
1925: int
1926: bus_generic_teardown_intr(device_t dev, device_t child, struct resource *irq,
1927: void *cookie)
1928: {
1929: /* Propagate up the bus hierarchy until someone handles it. */
1930: if (dev->parent)
1931: return(BUS_TEARDOWN_INTR(dev->parent, child, irq, cookie));
1932: else
1933: return(EINVAL);
1934: }
1935:
1936: struct resource *
1937: bus_generic_alloc_resource(device_t dev, device_t child, int type, int *rid,
1938: u_long start, u_long end, u_long count, u_int flags)
1939: {
1940: /* Propagate up the bus hierarchy until someone handles it. */
1941: if (dev->parent)
1942: return(BUS_ALLOC_RESOURCE(dev->parent, child, type, rid,
1943: start, end, count, flags));
1944: else
1945: return(NULL);
1946: }
1947:
1948: int
1949: bus_generic_release_resource(device_t dev, device_t child, int type, int rid,
1950: struct resource *r)
1951: {
1952: /* Propagate up the bus hierarchy until someone handles it. */
1953: if (dev->parent)
1954: return(BUS_RELEASE_RESOURCE(dev->parent, child, type, rid, r));
1955: else
1956: return(EINVAL);
1957: }
1958:
1959: int
1960: bus_generic_activate_resource(device_t dev, device_t child, int type, int rid,
1961: struct resource *r)
1962: {
1963: /* Propagate up the bus hierarchy until someone handles it. */
1964: if (dev->parent)
1965: return(BUS_ACTIVATE_RESOURCE(dev->parent, child, type, rid, r));
1966: else
1967: return(EINVAL);
1968: }
1969:
1970: int
1971: bus_generic_deactivate_resource(device_t dev, device_t child, int type,
1972: int rid, struct resource *r)
1973: {
1974: /* Propagate up the bus hierarchy until someone handles it. */
1975: if (dev->parent)
1976: return(BUS_DEACTIVATE_RESOURCE(dev->parent, child, type, rid,
1977: r));
1978: else
1979: return(EINVAL);
1980: }
1981:
1982: int
1983: bus_generic_config_intr(device_t dev, int irq, enum intr_trigger trig,
1984: enum intr_polarity pol)
1985: {
1986: /* Propagate up the bus hierarchy until someone handles it. */
1987: if (dev->parent)
1988: return(BUS_CONFIG_INTR(dev->parent, irq, trig, pol));
1989: else
1990: return(EINVAL);
1991: }
1992:
1993: int
1994: bus_generic_rl_get_resource(device_t dev, device_t child, int type, int rid,
1995: u_long *startp, u_long *countp)
1996: {
1997: struct resource_list *rl = NULL;
1998: struct resource_list_entry *rle = NULL;
1999:
2000: rl = BUS_GET_RESOURCE_LIST(dev, child);
2001: if (!rl)
2002: return(EINVAL);
2003:
2004: rle = resource_list_find(rl, type, rid);
2005: if (!rle)
2006: return(ENOENT);
2007:
2008: if (startp)
2009: *startp = rle->start;
2010: if (countp)
2011: *countp = rle->count;
2012:
2013: return(0);
2014: }
2015:
2016: int
2017: bus_generic_rl_set_resource(device_t dev, device_t child, int type, int rid,
2018: u_long start, u_long count)
2019: {
2020: struct resource_list *rl = NULL;
2021:
2022: rl = BUS_GET_RESOURCE_LIST(dev, child);
2023: if (!rl)
2024: return(EINVAL);
2025:
2026: resource_list_add(rl, type, rid, start, (start + count - 1), count);
2027:
2028: return(0);
2029: }
2030:
2031: void
2032: bus_generic_rl_delete_resource(device_t dev, device_t child, int type, int rid)
2033: {
2034: struct resource_list *rl = NULL;
2035:
2036: rl = BUS_GET_RESOURCE_LIST(dev, child);
2037: if (!rl)
2038: return;
2039:
2040: resource_list_delete(rl, type, rid);
2041: }
2042:
2043: int
2044: bus_generic_rl_release_resource(device_t dev, device_t child, int type,
2045: int rid, struct resource *r)
2046: {
2047: struct resource_list *rl = NULL;
2048:
2049: rl = BUS_GET_RESOURCE_LIST(dev, child);
2050: if (!rl)
2051: return(EINVAL);
2052:
2053: return(resource_list_release(rl, dev, child, type, rid, r));
2054: }
2055:
2056: struct resource *
2057: bus_generic_rl_alloc_resource(device_t dev, device_t child, int type,
2058: int *rid, u_long start, u_long end, u_long count, u_int flags)
2059: {
2060: struct resource_list *rl = NULL;
2061:
2062: rl = BUS_GET_RESOURCE_LIST(dev, child);
2063: if (!rl)
2064: return(NULL);
2065:
2066: return(resource_list_alloc(rl, dev, child, type, rid,
2067: start, end, count, flags));
2068: }
2069:
2070: int
2071: bus_generic_child_present(device_t bus, device_t child)
2072: {
2073: return(BUS_CHILD_PRESENT(device_get_parent(bus), bus));
2074: }
2075:
2076:
2077: /*
2078: * Some convenience functions to make it easier for drivers to use the
2079: * resource-management functions. All these really do is hide the
2080: * indirection through the parent's method table, making for slightly
2081: * less-wordy code. In the future, it might make sense for this code
2082: * to maintain some sort of a list of resources allocated by each device.
2083: */
2084: struct resource *
2085: bus_alloc_resource(device_t dev, int type, int *rid, u_long start, u_long end,
2086: u_long count, u_int flags)
2087: {
2088: if (dev->parent == 0)
2089: return(0);
2090: return(BUS_ALLOC_RESOURCE(dev->parent, dev, type, rid, start, end,
2091: count, flags));
2092: }
2093:
2094: int
2095: bus_activate_resource(device_t dev, int type, int rid, struct resource *r)
2096: {
2097: if (dev->parent == 0)
2098: return(EINVAL);
2099: return(BUS_ACTIVATE_RESOURCE(dev->parent, dev, type, rid, r));
2100: }
2101:
2102: int
2103: bus_deactivate_resource(device_t dev, int type, int rid, struct resource *r)
2104: {
2105: if (dev->parent == 0)
2106: return(EINVAL);
2107: return(BUS_DEACTIVATE_RESOURCE(dev->parent, dev, type, rid, r));
2108: }
2109:
2110: int
2111: bus_release_resource(device_t dev, int type, int rid, struct resource *r)
2112: {
2113: if (dev->parent == 0)
2114: return(EINVAL);
2115: return(BUS_RELEASE_RESOURCE(dev->parent, dev, type, rid, r));
2116: }
2117:
2118: int
2119: bus_setup_intr(device_t dev, struct resource *r, int flags,
2120: driver_intr_t handler, void *arg, void **cookiep)
2121: {
2122: if (dev->parent == 0)
2123: return(EINVAL);
2124: return(BUS_SETUP_INTR(dev->parent, dev, r, flags, handler, arg,
2125: cookiep));
2126: }
2127:
2128: int
2129: bus_teardown_intr(device_t dev, struct resource *r, void *cookie)
2130: {
2131: if (dev->parent == 0)
2132: return(EINVAL);
2133: return(BUS_TEARDOWN_INTR(dev->parent, dev, r, cookie));
2134: }
2135:
2136: int
2137: bus_set_resource(device_t dev, int type, int rid,
2138: u_long start, u_long count)
2139: {
2140: return(BUS_SET_RESOURCE(device_get_parent(dev), dev, type, rid,
2141: start, count));
2142: }
2143:
2144: int
2145: bus_get_resource(device_t dev, int type, int rid,
2146: u_long *startp, u_long *countp)
2147: {
2148: return(BUS_GET_RESOURCE(device_get_parent(dev), dev, type, rid,
2149: startp, countp));
2150: }
2151:
2152: u_long
2153: bus_get_resource_start(device_t dev, int type, int rid)
2154: {
2155: u_long start, count;
2156: int error;
2157:
2158: error = BUS_GET_RESOURCE(device_get_parent(dev), dev, type, rid,
2159: &start, &count);
2160: if (error)
2161: return(0);
2162: return(start);
2163: }
2164:
2165: u_long
2166: bus_get_resource_count(device_t dev, int type, int rid)
2167: {
2168: u_long start, count;
2169: int error;
2170:
2171: error = BUS_GET_RESOURCE(device_get_parent(dev), dev, type, rid,
2172: &start, &count);
2173: if (error)
2174: return(0);
2175: return(count);
2176: }
2177:
2178: void
2179: bus_delete_resource(device_t dev, int type, int rid)
2180: {
2181: BUS_DELETE_RESOURCE(device_get_parent(dev), dev, type, rid);
2182: }
2183:
2184: int
2185: bus_child_present(device_t child)
2186: {
2187: return (BUS_CHILD_PRESENT(device_get_parent(child), child));
2188: }
2189:
2190: int
2191: bus_child_pnpinfo_str(device_t child, char *buf, size_t buflen)
2192: {
2193: device_t parent;
2194:
2195: parent = device_get_parent(child);
2196: if (parent == NULL) {
2197: *buf = '\0';
2198: return (0);
2199: }
2200: return (BUS_CHILD_PNPINFO_STR(parent, child, buf, buflen));
2201: }
2202:
2203: int
2204: bus_child_location_str(device_t child, char *buf, size_t buflen)
2205: {
2206: device_t parent;
2207:
2208: parent = device_get_parent(child);
2209: if (parent == NULL) {
2210: *buf = '\0';
2211: return (0);
2212: }
2213: return (BUS_CHILD_LOCATION_STR(parent, child, buf, buflen));
2214: }
2215:
2216: static int
2217: root_print_child(device_t dev, device_t child)
2218: {
2219: return(0);
2220: }
2221:
2222: static int
2223: root_setup_intr(device_t dev, device_t child, driver_intr_t *intr, void *arg,
2224: void **cookiep)
2225: {
2226: /*
2227: * If an interrupt mapping gets to here something bad has happened.
2228: */
2229: panic("root_setup_intr");
2230: }
2231:
2232: /*
2233: * If we get here, assume that the device is permanant and really is
2234: * present in the system. Removable bus drivers are expected to intercept
2235: * this call long before it gets here. We return -1 so that drivers that
2236: * really care can check vs -1 or some ERRNO returned higher in the food
2237: * chain.
2238: */
2239: static int
2240: root_child_present(device_t dev, device_t child)
2241: {
2242: return(-1);
2243: }
2244:
2245: /*
2246: * XXX NOTE! other defaults may be set in bus_if.m
2247: */
2248: static kobj_method_t root_methods[] = {
2249: /* Device interface */
2250: KOBJMETHOD(device_shutdown, bus_generic_shutdown),
2251: KOBJMETHOD(device_suspend, bus_generic_suspend),
2252: KOBJMETHOD(device_resume, bus_generic_resume),
2253:
2254: /* Bus interface */
2255: KOBJMETHOD(bus_print_child, root_print_child),
2256: KOBJMETHOD(bus_read_ivar, bus_generic_read_ivar),
2257: KOBJMETHOD(bus_write_ivar, bus_generic_write_ivar),
2258: KOBJMETHOD(bus_setup_intr, root_setup_intr),
2259: KOBJMETHOD(bus_child_present, root_child_present),
2260:
2261: { 0, 0 }
2262: };
2263:
2264: static driver_t root_driver = {
2265: "root",
2266: root_methods,
2267: 1, /* no softc */
2268: };
2269:
2270: device_t root_bus;
2271: devclass_t root_devclass;
2272:
2273: static int
2274: root_bus_module_handler(module_t mod, int what, void* arg)
2275: {
2276: switch (what) {
2277: case MOD_LOAD:
2278: root_bus = make_device(NULL, "root", 0);
2279: root_bus->desc = "System root bus";
2280: kobj_init((kobj_t) root_bus, (kobj_class_t) &root_driver);
2281: root_bus->driver = &root_driver;
2282: root_bus->state = DS_ATTACHED;
2283: root_devclass = devclass_find_internal("root", NULL, FALSE);
2284: return(0);
2285:
2286: case MOD_SHUTDOWN:
2287: device_shutdown(root_bus);
2288: return(0);
2289: default:
2290: return(0);
2291: }
2292: }
2293:
2294: static moduledata_t root_bus_mod = {
2295: "rootbus",
2296: root_bus_module_handler,
2297: 0
2298: };
2299: DECLARE_MODULE(rootbus, root_bus_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST);
2300:
2301: void
2302: root_bus_configure(void)
2303: {
2304: device_t dev;
2305:
2306: PDEBUG(("."));
2307:
2308: TAILQ_FOREACH(dev, &root_bus->children, link)
2309: device_probe_and_attach(dev);
2310: }
2311:
2312: int
2313: driver_module_handler(module_t mod, int what, void *arg)
2314: {
2315: int error;
2316: struct driver_module_data *dmd;
2317: devclass_t bus_devclass;
2318: kobj_class_t driver;
2319: const char *parentname;
2320:
2321: dmd = (struct driver_module_data *)arg;
2322: bus_devclass = devclass_find_internal(dmd->dmd_busname, NULL, TRUE);
2323: error = 0;
2324:
2325: switch (what) {
2326: case MOD_LOAD:
2327: if (dmd->dmd_chainevh)
2328: error = dmd->dmd_chainevh(mod,what,dmd->dmd_chainarg);
2329:
2330: driver = dmd->dmd_driver;
2331: PDEBUG(("Loading module: driver %s on bus %s",
2332: DRIVERNAME(driver), dmd->dmd_busname));
2333: error = devclass_add_driver(bus_devclass, driver);
2334: if (error)
2335: break;
2336:
2337: /*
2338: * If the driver has any base classes, make the
2339: * devclass inherit from the devclass of the driver's
2340: * first base class. This will allow the system to
2341: * search for drivers in both devclasses for children
2342: * of a device using this driver.
2343: */
2344: if (driver->baseclasses)
2345: parentname = driver->baseclasses[0]->name;
2346: else
2347: parentname = NULL;
2348: *dmd->dmd_devclass = devclass_find_internal(driver->name,
2349: parentname, TRUE);
2350: break;
2351:
2352: case MOD_UNLOAD:
2353: PDEBUG(("Unloading module: driver %s from bus %s",
2354: DRIVERNAME(dmd->dmd_driver), dmd->dmd_busname));
2355: error = devclass_delete_driver(bus_devclass, dmd->dmd_driver);
2356:
2357: if (!error && dmd->dmd_chainevh)
2358: error = dmd->dmd_chainevh(mod,what,dmd->dmd_chainarg);
2359: break;
2360: }
2361:
2362: return (error);
2363: }
2364:
2365: #ifdef BUS_DEBUG
2366:
2367: /*
2368: * The _short versions avoid iteration by not calling anything that prints
2369: * more than oneliners. I love oneliners.
2370: */
2371:
2372: static void
2373: print_device_short(device_t dev, int indent)
2374: {
2375: if (!dev)
2376: return;
2377:
2378: indentprintf(("device %d: <%s> %sparent,%schildren,%s%s%s%s,%sivars,%ssoftc,busy=%d\n",
2379: dev->unit, dev->desc,
2380: (dev->parent? "":"no "),
2381: (TAILQ_EMPTY(&dev->children)? "no ":""),
2382: (dev->flags&DF_ENABLED? "enabled,":"disabled,"),
2383: (dev->flags&DF_FIXEDCLASS? "fixed,":""),
2384: (dev->flags&DF_WILDCARD? "wildcard,":""),
2385: (dev->flags&DF_DESCMALLOCED? "descmalloced,":""),
2386: (dev->ivars? "":"no "),
2387: (dev->softc? "":"no "),
2388: dev->busy));
2389: }
2390:
2391: static void
2392: print_device(device_t dev, int indent)
2393: {
2394: if (!dev)
2395: return;
2396:
2397: print_device_short(dev, indent);
2398:
2399: indentprintf(("Parent:\n"));
2400: print_device_short(dev->parent, indent+1);
2401: indentprintf(("Driver:\n"));
2402: print_driver_short(dev->driver, indent+1);
2403: indentprintf(("Devclass:\n"));
2404: print_devclass_short(dev->devclass, indent+1);
2405: }
2406:
2407: /*
2408: * Print the device and all its children (indented).
2409: */
2410: void
2411: print_device_tree_short(device_t dev, int indent)
2412: {
2413: device_t child;
2414:
2415: if (!dev)
2416: return;
2417:
2418: print_device_short(dev, indent);
2419:
2420: TAILQ_FOREACH(child, &dev->children, link)
2421: print_device_tree_short(child, indent+1);
2422: }
2423:
2424: /*
2425: * Print the device and all its children (indented).
2426: */
2427: void
2428: print_device_tree(device_t dev, int indent)
2429: {
2430: device_t child;
2431:
2432: if (!dev)
2433: return;
2434:
2435: print_device(dev, indent);
2436:
2437: TAILQ_FOREACH(child, &dev->children, link)
2438: print_device_tree(child, indent+1);
2439: }
2440:
2441: static void
2442: print_driver_short(driver_t *driver, int indent)
2443: {
2444: if (!driver)
2445: return;
2446:
2447: indentprintf(("driver %s: softc size = %d\n",
2448: driver->name, driver->size));
2449: }
2450:
2451: static void
2452: print_driver(driver_t *driver, int indent)
2453: {
2454: if (!driver)
2455: return;
2456:
2457: print_driver_short(driver, indent);
2458: }
2459:
2460:
2461: static void
2462: print_driver_list(driver_list_t drivers, int indent)
2463: {
2464: driverlink_t driver;
2465:
2466: TAILQ_FOREACH(driver, &drivers, link)
2467: print_driver(driver->driver, indent);
2468: }
2469:
2470: static void
2471: print_devclass_short(devclass_t dc, int indent)
2472: {
2473: if (!dc)
2474: return;
2475:
2476: indentprintf(("devclass %s: max units = %d\n", dc->name, dc->maxunit));
2477: }
2478:
2479: static void
2480: print_devclass(devclass_t dc, int indent)
2481: {
2482: int i;
2483:
2484: if (!dc)
2485: return;
2486:
2487: print_devclass_short(dc, indent);
2488: indentprintf(("Drivers:\n"));
2489: print_driver_list(dc->drivers, indent+1);
2490:
2491: indentprintf(("Devices:\n"));
2492: for (i = 0; i < dc->maxunit; i++)
2493: if (dc->devices[i])
2494: print_device(dc->devices[i], indent+1);
2495: }
2496:
2497: void
2498: print_devclass_list_short(void)
2499: {
2500: devclass_t dc;
2501:
2502: printf("Short listing of devclasses, drivers & devices:\n");
2503: TAILQ_FOREACH(dc, &devclasses, link) {
2504: print_devclass_short(dc, 0);
2505: }
2506: }
2507:
2508: void
2509: print_devclass_list(void)
2510: {
2511: devclass_t dc;
2512:
2513: printf("Full listing of devclasses, drivers & devices:\n");
2514: TAILQ_FOREACH(dc, &devclasses, link) {
2515: print_devclass(dc, 0);
2516: }
2517: }
2518:
2519: #endif
2520:
2521: /*
2522: * Check to see if a device is disabled via a disabled hint.
2523: */
2524: int
2525: resource_disabled(const char *name, int unit)
2526: {
2527: int error, value;
2528:
2529: error = resource_int_value(name, unit, "disabled", &value);
2530: if (error)
2531: return(0);
2532: return(value);
2533: }
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