General netif malloc() flags cleanup. Use M_INTWAIT or M_WAITOK instead
[dragonfly.git] / sys / bus / isa / isa_common.c
CommitLineData
984263bc
MD
1/*-
2 * Copyright (c) 1999 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/isa/isa_common.c,v 1.16.2.1 2000/09/16 15:49:52 roger Exp $
330ca0ab 27 * $DragonFly: src/sys/bus/isa/isa_common.c,v 1.4 2003/08/27 11:42:34 rob Exp $
984263bc
MD
28 */
29/*
30 * Modifications for Intel architecture by Garrett A. Wollman.
31 * Copyright 1998 Massachusetts Institute of Technology
32 *
33 * Permission to use, copy, modify, and distribute this software and
34 * its documentation for any purpose and without fee is hereby
35 * granted, provided that both the above copyright notice and this
36 * permission notice appear in all copies, that both the above
37 * copyright notice and this permission notice appear in all
38 * supporting documentation, and that the name of M.I.T. not be used
39 * in advertising or publicity pertaining to distribution of the
40 * software without specific, written prior permission. M.I.T. makes
41 * no representations about the suitability of this software for any
42 * purpose. It is provided "as is" without express or implied
43 * warranty.
44 *
45 * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS
46 * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
47 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
48 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
49 * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
50 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
51 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
52 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
53 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
54 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
55 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
56 * SUCH DAMAGE.
57 */
58
59/*
60 * Parts of the ISA bus implementation common to all architectures.
61 */
62
63#include <sys/param.h>
64#include <sys/systm.h>
65#include <sys/kernel.h>
66#include <sys/bus.h>
67#include <sys/malloc.h>
68#include <sys/module.h>
69#include <machine/bus.h>
70#include <sys/rman.h>
71
72#include <machine/resource.h>
73
1f2de5d4
MD
74#include "isavar.h"
75#include "isa_common.h"
984263bc 76#ifdef __alpha__ /* XXX workaround a stupid warning */
1f2de5d4 77#include "isavar.h"
984263bc
MD
78#endif
79
330ca0ab 80static int isa_print_child (device_t, device_t);
984263bc
MD
81
82MALLOC_DEFINE(M_ISADEV, "isadev", "ISA device");
83
84static devclass_t isa_devclass;
85static int isa_running;
86
87/*
88 * At 'probe' time, we add all the devices which we know about to the
89 * bus. The generic attach routine will probe and attach them if they
90 * are alive.
91 */
92static int
93isa_probe(device_t dev)
94{
95 device_set_desc(dev, "ISA bus");
96 isa_init(); /* Allow machdep code to initialise */
97 return 0;
98}
99
100extern device_t isa_bus_device;
101
102static int
103isa_attach(device_t dev)
104{
105 /*
106 * Arrange for isa_probe_children(dev) to be called later. XXX
107 */
108 isa_bus_device = dev;
109 return 0;
110}
111
112/*
113 * Find a working set of memory regions for a child using the ranges
114 * in *config and return the regions in *result. Returns non-zero if
115 * a set of ranges was found.
116 */
117static int
118isa_find_memory(device_t child,
119 struct isa_config *config,
120 struct isa_config *result)
121{
122 int success, i;
123 struct resource *res[ISA_NMEM];
124
125 /*
126 * First clear out any existing resource definitions.
127 */
128 for (i = 0; i < ISA_NMEM; i++) {
129 bus_delete_resource(child, SYS_RES_MEMORY, i);
130 res[i] = NULL;
131 }
132
133 success = 1;
134 result->ic_nmem = config->ic_nmem;
135 for (i = 0; i < config->ic_nmem; i++) {
136 u_int32_t start, end, size, align;
137 for (start = config->ic_mem[i].ir_start,
138 end = config->ic_mem[i].ir_end,
139 size = config->ic_mem[i].ir_size,
140 align = config->ic_mem[i].ir_align;
141 start + size - 1 <= end;
142 start += align) {
143 bus_set_resource(child, SYS_RES_MEMORY, i,
144 start, size);
145 res[i] = bus_alloc_resource(child,
146 SYS_RES_MEMORY, &i,
147 0, ~0, 1, 0 /* !RF_ACTIVE */);
148 if (res[i]) {
149 result->ic_mem[i].ir_start = start;
150 result->ic_mem[i].ir_end = start + size - 1;
151 result->ic_mem[i].ir_size = size;
152 result->ic_mem[i].ir_align = align;
153 break;
154 }
155 }
156
157 /*
158 * If we didn't find a place for memory range i, then
159 * give up now.
160 */
161 if (!res[i]) {
162 success = 0;
163 break;
164 }
165 }
166
167 for (i = 0; i < ISA_NMEM; i++) {
168 if (res[i])
169 bus_release_resource(child, SYS_RES_MEMORY,
170 i, res[i]);
171 }
172
173 return success;
174}
175
176/*
177 * Find a working set of port regions for a child using the ranges
178 * in *config and return the regions in *result. Returns non-zero if
179 * a set of ranges was found.
180 */
181static int
182isa_find_port(device_t child,
183 struct isa_config *config,
184 struct isa_config *result)
185{
186 int success, i;
187 struct resource *res[ISA_NPORT];
188
189 /*
190 * First clear out any existing resource definitions.
191 */
192 for (i = 0; i < ISA_NPORT; i++) {
193 bus_delete_resource(child, SYS_RES_IOPORT, i);
194 res[i] = NULL;
195 }
196
197 success = 1;
198 result->ic_nport = config->ic_nport;
199 for (i = 0; i < config->ic_nport; i++) {
200 u_int32_t start, end, size, align;
201 for (start = config->ic_port[i].ir_start,
202 end = config->ic_port[i].ir_end,
203 size = config->ic_port[i].ir_size,
204 align = config->ic_port[i].ir_align;
205 start + size - 1 <= end;
206 start += align) {
207 bus_set_resource(child, SYS_RES_IOPORT, i,
208 start, size);
209 res[i] = bus_alloc_resource(child,
210 SYS_RES_IOPORT, &i,
211 0, ~0, 1, 0 /* !RF_ACTIVE */);
212 if (res[i]) {
213 result->ic_port[i].ir_start = start;
214 result->ic_port[i].ir_end = start + size - 1;
215 result->ic_port[i].ir_size = size;
216 result->ic_port[i].ir_align = align;
217 break;
218 }
219 }
220
221 /*
222 * If we didn't find a place for port range i, then
223 * give up now.
224 */
225 if (!res[i]) {
226 success = 0;
227 break;
228 }
229 }
230
231 for (i = 0; i < ISA_NPORT; i++) {
232 if (res[i])
233 bus_release_resource(child, SYS_RES_IOPORT,
234 i, res[i]);
235 }
236
237 return success;
238}
239
240/*
241 * Return the index of the first bit in the mask (or -1 if mask is empty.
242 */
243static int
244find_first_bit(u_int32_t mask)
245{
246 return ffs(mask) - 1;
247}
248
249/*
250 * Return the index of the next bit in the mask, or -1 if there are no more.
251 */
252static int
253find_next_bit(u_int32_t mask, int bit)
254{
255 bit++;
256 while (bit < 32 && !(mask & (1 << bit)))
257 bit++;
258 if (bit != 32)
259 return bit;
260 return -1;
261}
262
263/*
264 * Find a working set of irqs for a child using the masks in *config
265 * and return the regions in *result. Returns non-zero if a set of
266 * irqs was found.
267 */
268static int
269isa_find_irq(device_t child,
270 struct isa_config *config,
271 struct isa_config *result)
272{
273 int success, i;
274 struct resource *res[ISA_NIRQ];
275
276 /*
277 * First clear out any existing resource definitions.
278 */
279 for (i = 0; i < ISA_NIRQ; i++) {
280 bus_delete_resource(child, SYS_RES_IRQ, i);
281 res[i] = NULL;
282 }
283
284 success = 1;
285 result->ic_nirq = config->ic_nirq;
286 for (i = 0; i < config->ic_nirq; i++) {
287 u_int32_t mask = config->ic_irqmask[i];
288 int irq;
289 for (irq = find_first_bit(mask);
290 irq != -1;
291 irq = find_next_bit(mask, irq)) {
292 bus_set_resource(child, SYS_RES_IRQ, i,
293 irq, 1);
294 res[i] = bus_alloc_resource(child,
295 SYS_RES_IRQ, &i,
296 0, ~0, 1, 0 /* !RF_ACTIVE */ );
297 if (res[i]) {
298 result->ic_irqmask[i] = (1 << irq);
299 break;
300 }
301 }
302
303 /*
304 * If we didn't find a place for irq range i, then
305 * give up now.
306 */
307 if (!res[i]) {
308 success = 0;
309 break;
310 }
311 }
312
313 for (i = 0; i < ISA_NIRQ; i++) {
314 if (res[i])
315 bus_release_resource(child, SYS_RES_IRQ,
316 i, res[i]);
317 }
318
319 return success;
320}
321
322/*
323 * Find a working set of drqs for a child using the masks in *config
324 * and return the regions in *result. Returns non-zero if a set of
325 * drqs was found.
326 */
327static int
328isa_find_drq(device_t child,
329 struct isa_config *config,
330 struct isa_config *result)
331{
332 int success, i;
333 struct resource *res[ISA_NDRQ];
334
335 /*
336 * First clear out any existing resource definitions.
337 */
338 for (i = 0; i < ISA_NDRQ; i++) {
339 bus_delete_resource(child, SYS_RES_DRQ, i);
340 res[i] = NULL;
341 }
342
343 success = 1;
344 result->ic_ndrq = config->ic_ndrq;
345 for (i = 0; i < config->ic_ndrq; i++) {
346 u_int32_t mask = config->ic_drqmask[i];
347 int drq;
348 for (drq = find_first_bit(mask);
349 drq != -1;
350 drq = find_next_bit(mask, drq)) {
351 bus_set_resource(child, SYS_RES_DRQ, i,
352 drq, 1);
353 res[i] = bus_alloc_resource(child,
354 SYS_RES_DRQ, &i,
355 0, ~0, 1, 0 /* !RF_ACTIVE */);
356 if (res[i]) {
357 result->ic_drqmask[i] = (1 << drq);
358 break;
359 }
360 }
361
362 /*
363 * If we didn't find a place for drq range i, then
364 * give up now.
365 */
366 if (!res[i]) {
367 success = 0;
368 break;
369 }
370 }
371
372 for (i = 0; i < ISA_NDRQ; i++) {
373 if (res[i])
374 bus_release_resource(child, SYS_RES_DRQ,
375 i, res[i]);
376 }
377
378 return success;
379}
380
381/*
382 * Attempt to find a working set of resources for a device. Return
383 * non-zero if a working configuration is found.
384 */
385static int
386isa_assign_resources(device_t child)
387{
388 struct isa_device *idev = DEVTOISA(child);
389 struct isa_config_entry *ice;
390 struct isa_config config;
391
392 bzero(&config, sizeof config);
393 TAILQ_FOREACH(ice, &idev->id_configs, ice_link) {
394 if (!isa_find_memory(child, &ice->ice_config, &config))
395 continue;
396 if (!isa_find_port(child, &ice->ice_config, &config))
397 continue;
398 if (!isa_find_irq(child, &ice->ice_config, &config))
399 continue;
400 if (!isa_find_drq(child, &ice->ice_config, &config))
401 continue;
402
403 /*
404 * A working configuration was found enable the device
405 * with this configuration.
406 */
407 if (idev->id_config_cb) {
408 idev->id_config_cb(idev->id_config_arg,
409 &config, 1);
410 return 1;
411 }
412 }
413
414 /*
415 * Disable the device.
416 */
417 bus_print_child_header(device_get_parent(child), child);
418 printf(" can't assign resources\n");
419 if (bootverbose)
420 isa_print_child(device_get_parent(child), child);
421 bzero(&config, sizeof config);
422 if (idev->id_config_cb)
423 idev->id_config_cb(idev->id_config_arg, &config, 0);
424 device_disable(child);
425
426 return 0;
427}
428
429/*
430 * Called after other devices have initialised to probe for isa devices.
431 */
432void
433isa_probe_children(device_t dev)
434{
435 device_t *children;
436 int nchildren, i;
437
438 /*
439 * Create all the children by calling driver's identify methods.
440 */
441 bus_generic_probe(dev);
442
443 if (device_get_children(dev, &children, &nchildren))
444 return;
445
446 /*
447 * First disable all pnp devices so that they don't get
448 * matched by legacy probes.
449 */
450 if (bootverbose)
451 printf("isa_probe_children: disabling PnP devices\n");
452 for (i = 0; i < nchildren; i++) {
453 device_t child = children[i];
454 struct isa_device *idev = DEVTOISA(child);
455 struct isa_config config;
456
457 bzero(&config, sizeof config);
458 if (idev->id_config_cb)
459 idev->id_config_cb(idev->id_config_arg, &config, 0);
460 }
461
462 /*
463 * Next probe all non-pnp devices so that they claim their
464 * resources first.
465 */
466 if (bootverbose)
467 printf("isa_probe_children: probing non-PnP devices\n");
468 for (i = 0; i < nchildren; i++) {
469 device_t child = children[i];
470 struct isa_device *idev = DEVTOISA(child);
471
472 if (TAILQ_FIRST(&idev->id_configs))
473 continue;
474
475 device_probe_and_attach(child);
476 }
477
478 /*
479 * Finally assign resource to pnp devices and probe them.
480 */
481 if (bootverbose)
482 printf("isa_probe_children: probing PnP devices\n");
483 for (i = 0; i < nchildren; i++) {
484 device_t child = children[i];
485 struct isa_device* idev = DEVTOISA(child);
486
487 if (!TAILQ_FIRST(&idev->id_configs))
488 continue;
489
490 if (isa_assign_resources(child)) {
491 struct resource_list *rl = &idev->id_resources;
492 struct resource_list_entry *rle;
493
494 device_probe_and_attach(child);
495
496 /*
497 * Claim any unallocated resources to keep other
498 * devices from using them.
499 */
500 SLIST_FOREACH(rle, rl, link) {
501 if (!rle->res) {
502 int rid = rle->rid;
503 resource_list_alloc(rl, dev, child,
504 rle->type,
505 &rid,
506 0, ~0, 1,
507 0 /* !RF_ACTIVE */);
508 }
509 }
510 }
511 }
512
513 free(children, M_TEMP);
514
515 isa_running = 1;
516}
517
518/*
519 * Add a new child with default ivars.
520 */
521static device_t
522isa_add_child(device_t dev, int order, const char *name, int unit)
523{
524 device_t child;
525 struct isa_device *idev;
526
527 idev = malloc(sizeof(struct isa_device), M_ISADEV, M_NOWAIT);
528 if (!idev)
529 return 0;
530 bzero(idev, sizeof *idev);
531
532 resource_list_init(&idev->id_resources);
533 TAILQ_INIT(&idev->id_configs);
534
535 child = device_add_child_ordered(dev, order, name, unit);
536 device_set_ivars(child, idev);
537
538 return child;
539}
540
541static int
542isa_print_resources(struct resource_list *rl, const char *name, int type,
543 int count, const char *format)
544{
545 struct resource_list_entry *rle;
546 int printed;
547 int i, retval = 0;;
548
549 printed = 0;
550 for (i = 0; i < count; i++) {
551 rle = resource_list_find(rl, type, i);
552 if (rle) {
553 if (printed == 0)
554 retval += printf(" %s ", name);
555 else if (printed > 0)
556 retval += printf(",");
557 printed++;
558 retval += printf(format, rle->start);
559 if (rle->count > 1) {
560 retval += printf("-");
561 retval += printf(format,
562 rle->start + rle->count - 1);
563 }
564 } else if (i > 3) {
565 /* check the first few regardless */
566 break;
567 }
568 }
569 return retval;
570}
571
572static int
573isa_print_all_resources(device_t dev)
574{
575 struct isa_device *idev = DEVTOISA(dev);
576 struct resource_list *rl = &idev->id_resources;
577 int retval = 0;
578
579 if (SLIST_FIRST(rl) || device_get_flags(dev))
580 retval += printf(" at");
581
582 retval += isa_print_resources(rl, "port", SYS_RES_IOPORT,
583 ISA_NPORT, "%#lx");
584 retval += isa_print_resources(rl, "iomem", SYS_RES_MEMORY,
585 ISA_NMEM, "%#lx");
586 retval += isa_print_resources(rl, "irq", SYS_RES_IRQ,
587 ISA_NIRQ, "%ld");
588 retval += isa_print_resources(rl, "drq", SYS_RES_DRQ,
589 ISA_NDRQ, "%ld");
590 if (device_get_flags(dev))
591 retval += printf(" flags %#x", device_get_flags(dev));
592
593 return retval;
594}
595
596static int
597isa_print_child(device_t bus, device_t dev)
598{
599 int retval = 0;
600
601 retval += bus_print_child_header(bus, dev);
602 retval += isa_print_all_resources(dev);
603 retval += bus_print_child_footer(bus, dev);
604
605 return (retval);
606}
607
608static void
609isa_probe_nomatch(device_t dev, device_t child)
610{
611 if (bootverbose) {
612 bus_print_child_header(dev, child);
613 printf(" failed to probe");
614 isa_print_all_resources(child);
615 bus_print_child_footer(dev, child);
616 }
617
618 return;
619}
620
621static int
622isa_read_ivar(device_t bus, device_t dev, int index, uintptr_t * result)
623{
624 struct isa_device* idev = DEVTOISA(dev);
625 struct resource_list *rl = &idev->id_resources;
626 struct resource_list_entry *rle;
627
628 switch (index) {
629 case ISA_IVAR_PORT_0:
630 rle = resource_list_find(rl, SYS_RES_IOPORT, 0);
631 if (rle)
632 *result = rle->start;
633 else
634 *result = -1;
635 break;
636
637 case ISA_IVAR_PORT_1:
638 rle = resource_list_find(rl, SYS_RES_IOPORT, 1);
639 if (rle)
640 *result = rle->start;
641 else
642 *result = -1;
643 break;
644
645 case ISA_IVAR_PORTSIZE_0:
646 rle = resource_list_find(rl, SYS_RES_IOPORT, 0);
647 if (rle)
648 *result = rle->count;
649 else
650 *result = 0;
651 break;
652
653 case ISA_IVAR_PORTSIZE_1:
654 rle = resource_list_find(rl, SYS_RES_IOPORT, 1);
655 if (rle)
656 *result = rle->count;
657 else
658 *result = 0;
659 break;
660
661 case ISA_IVAR_MADDR_0:
662 rle = resource_list_find(rl, SYS_RES_MEMORY, 0);
663 if (rle)
664 *result = rle->start;
665 else
666 *result = -1;
667 break;
668
669 case ISA_IVAR_MADDR_1:
670 rle = resource_list_find(rl, SYS_RES_MEMORY, 1);
671 if (rle)
672 *result = rle->start;
673 else
674 *result = -1;
675 break;
676
677 case ISA_IVAR_MSIZE_0:
678 rle = resource_list_find(rl, SYS_RES_MEMORY, 0);
679 if (rle)
680 *result = rle->count;
681 else
682 *result = 0;
683 break;
684
685 case ISA_IVAR_MSIZE_1:
686 rle = resource_list_find(rl, SYS_RES_MEMORY, 1);
687 if (rle)
688 *result = rle->count;
689 else
690 *result = 0;
691 break;
692
693 case ISA_IVAR_IRQ_0:
694 rle = resource_list_find(rl, SYS_RES_IRQ, 0);
695 if (rle)
696 *result = rle->start;
697 else
698 *result = -1;
699 break;
700
701 case ISA_IVAR_IRQ_1:
702 rle = resource_list_find(rl, SYS_RES_IRQ, 1);
703 if (rle)
704 *result = rle->start;
705 else
706 *result = -1;
707 break;
708
709 case ISA_IVAR_DRQ_0:
710 rle = resource_list_find(rl, SYS_RES_DRQ, 0);
711 if (rle)
712 *result = rle->start;
713 else
714 *result = -1;
715 break;
716
717 case ISA_IVAR_DRQ_1:
718 rle = resource_list_find(rl, SYS_RES_DRQ, 1);
719 if (rle)
720 *result = rle->start;
721 else
722 *result = -1;
723 break;
724
725 case ISA_IVAR_VENDORID:
726 *result = idev->id_vendorid;
727 break;
728
729 case ISA_IVAR_SERIAL:
730 *result = idev->id_serial;
731 break;
732
733 case ISA_IVAR_LOGICALID:
734 *result = idev->id_logicalid;
735 break;
736
737 case ISA_IVAR_COMPATID:
738 *result = idev->id_compatid;
739 break;
740
741 default:
742 return ENOENT;
743 }
744
745 return 0;
746}
747
748static int
749isa_write_ivar(device_t bus, device_t dev,
750 int index, uintptr_t value)
751{
752 struct isa_device* idev = DEVTOISA(dev);
753
754 switch (index) {
755 case ISA_IVAR_PORT_0:
756 case ISA_IVAR_PORT_1:
757 case ISA_IVAR_PORTSIZE_0:
758 case ISA_IVAR_PORTSIZE_1:
759 case ISA_IVAR_MADDR_0:
760 case ISA_IVAR_MADDR_1:
761 case ISA_IVAR_MSIZE_0:
762 case ISA_IVAR_MSIZE_1:
763 case ISA_IVAR_IRQ_0:
764 case ISA_IVAR_IRQ_1:
765 case ISA_IVAR_DRQ_0:
766 case ISA_IVAR_DRQ_1:
767 return EINVAL;
768
769 case ISA_IVAR_VENDORID:
770 idev->id_vendorid = value;
771 break;
772
773 case ISA_IVAR_SERIAL:
774 idev->id_serial = value;
775 break;
776
777 case ISA_IVAR_LOGICALID:
778 idev->id_logicalid = value;
779 break;
780
781 case ISA_IVAR_COMPATID:
782 idev->id_compatid = value;
783 break;
784
785 default:
786 return (ENOENT);
787 }
788
789 return (0);
790}
791
792/*
793 * Free any resources which the driver missed or which we were holding for
794 * it (see isa_probe_children).
795 */
796static void
797isa_child_detached(device_t dev, device_t child)
798{
799 struct isa_device* idev = DEVTOISA(child);
800 struct resource_list *rl = &idev->id_resources;
801 struct resource_list_entry *rle;
802
803 if (TAILQ_FIRST(&idev->id_configs)) {
804 /*
805 * Claim any unallocated resources to keep other
806 * devices from using them.
807 */
808 SLIST_FOREACH(rle, rl, link) {
809 if (!rle->res) {
810 int rid = rle->rid;
811 resource_list_alloc(rl, dev, child,
812 rle->type,
813 &rid, 0, ~0, 1, 0);
814 }
815 }
816 }
817}
818
819static void
820isa_driver_added(device_t dev, driver_t *driver)
821{
822 device_t *children;
823 int nchildren, i;
824
825 /*
826 * Don't do anything if drivers are dynamically
827 * added during autoconfiguration (cf. ymf724).
828 * since that would end up calling identify
829 * twice.
830 */
831 if (!isa_running)
832 return;
833
834 DEVICE_IDENTIFY(driver, dev);
835 if (device_get_children(dev, &children, &nchildren))
836 return;
837
838 for (i = 0; i < nchildren; i++) {
839 device_t child = children[i];
840 struct isa_device *idev = DEVTOISA(child);
841 struct resource_list *rl = &idev->id_resources;
842 struct resource_list_entry *rle;
843
844 if (device_get_state(child) != DS_NOTPRESENT)
845 continue;
846 if (!device_is_enabled(child))
847 continue;
848
849 /*
850 * Free resources which we were holding on behalf of
851 * the device.
852 */
853 SLIST_FOREACH(rle, &idev->id_resources, link) {
854 if (rle->res)
855 resource_list_release(rl, dev, child,
856 rle->type,
857 rle->rid,
858 rle->res);
859 }
860
861 if (TAILQ_FIRST(&idev->id_configs))
862 if (!isa_assign_resources(child))
863 continue;
864
865 device_probe_and_attach(child);
866
867 if (TAILQ_FIRST(&idev->id_configs)) {
868 /*
869 * Claim any unallocated resources to keep other
870 * devices from using them.
871 */
872 SLIST_FOREACH(rle, rl, link) {
873 if (!rle->res) {
874 int rid = rle->rid;
875 resource_list_alloc(rl, dev, child,
876 rle->type,
877 &rid,
878 0, ~0, 1,
879 0 /* !RF_ACTIVE */);
880 }
881 }
882 }
883 }
884
885 free(children, M_TEMP);
886}
887
888static int
889isa_set_resource(device_t dev, device_t child, int type, int rid,
890 u_long start, u_long count)
891{
892 struct isa_device* idev = DEVTOISA(child);
893 struct resource_list *rl = &idev->id_resources;
894
895 if (type != SYS_RES_IOPORT && type != SYS_RES_MEMORY
896 && type != SYS_RES_IRQ && type != SYS_RES_DRQ)
897 return EINVAL;
898 if (rid < 0)
899 return EINVAL;
900 if (type == SYS_RES_IOPORT && rid >= ISA_NPORT)
901 return EINVAL;
902 if (type == SYS_RES_MEMORY && rid >= ISA_NMEM)
903 return EINVAL;
904 if (type == SYS_RES_IRQ && rid >= ISA_NIRQ)
905 return EINVAL;
906 if (type == SYS_RES_DRQ && rid >= ISA_NDRQ)
907 return EINVAL;
908
909 resource_list_add(rl, type, rid, start, start + count - 1, count);
910
911 return 0;
912}
913
914static int
915isa_get_resource(device_t dev, device_t child, int type, int rid,
916 u_long *startp, u_long *countp)
917{
918 struct isa_device* idev = DEVTOISA(child);
919 struct resource_list *rl = &idev->id_resources;
920 struct resource_list_entry *rle;
921
922 rle = resource_list_find(rl, type, rid);
923 if (!rle)
924 return ENOENT;
925
926 if (startp)
927 *startp = rle->start;
928 if (countp)
929 *countp = rle->count;
930
931 return 0;
932}
933
934static void
935isa_delete_resource(device_t dev, device_t child, int type, int rid)
936{
937 struct isa_device* idev = DEVTOISA(child);
938 struct resource_list *rl = &idev->id_resources;
939 resource_list_delete(rl, type, rid);
940}
941
942static int
943isa_add_config(device_t dev, device_t child,
944 int priority, struct isa_config *config)
945{
946 struct isa_device* idev = DEVTOISA(child);
947 struct isa_config_entry *newice, *ice;
948
949 newice = malloc(sizeof *ice, M_DEVBUF, M_NOWAIT);
950 if (!newice)
951 return ENOMEM;
952
953 newice->ice_priority = priority;
954 newice->ice_config = *config;
955
956 TAILQ_FOREACH(ice, &idev->id_configs, ice_link) {
957 if (ice->ice_priority > priority)
958 break;
959 }
960 if (ice)
961 TAILQ_INSERT_BEFORE(ice, newice, ice_link);
962 else
963 TAILQ_INSERT_TAIL(&idev->id_configs, newice, ice_link);
964
965 return 0;
966}
967
968static void
969isa_set_config_callback(device_t dev, device_t child,
970 isa_config_cb *fn, void *arg)
971{
972 struct isa_device* idev = DEVTOISA(child);
973
974 idev->id_config_cb = fn;
975 idev->id_config_arg = arg;
976}
977
978static int
979isa_pnp_probe(device_t dev, device_t child, struct isa_pnp_id *ids)
980{
981 struct isa_device* idev = DEVTOISA(child);
982
983 if (!idev->id_vendorid)
984 return ENOENT;
985
986 while (ids->ip_id) {
987 /*
988 * Really ought to support >1 compat id per device.
989 */
990 if (idev->id_logicalid == ids->ip_id
991 || idev->id_compatid == ids->ip_id) {
992 if (ids->ip_desc)
993 device_set_desc(child, ids->ip_desc);
994 return 0;
995 }
996 ids++;
997 }
998
999 return ENXIO;
1000}
1001
1002static device_method_t isa_methods[] = {
1003 /* Device interface */
1004 DEVMETHOD(device_probe, isa_probe),
1005 DEVMETHOD(device_attach, isa_attach),
1006 DEVMETHOD(device_detach, bus_generic_detach),
1007 DEVMETHOD(device_shutdown, bus_generic_shutdown),
1008 DEVMETHOD(device_suspend, bus_generic_suspend),
1009 DEVMETHOD(device_resume, bus_generic_resume),
1010
1011 /* Bus interface */
1012 DEVMETHOD(bus_add_child, isa_add_child),
1013 DEVMETHOD(bus_print_child, isa_print_child),
1014 DEVMETHOD(bus_probe_nomatch, isa_probe_nomatch),
1015 DEVMETHOD(bus_read_ivar, isa_read_ivar),
1016 DEVMETHOD(bus_write_ivar, isa_write_ivar),
1017 DEVMETHOD(bus_child_detached, isa_child_detached),
1018 DEVMETHOD(bus_driver_added, isa_driver_added),
1019 DEVMETHOD(bus_alloc_resource, isa_alloc_resource),
1020 DEVMETHOD(bus_release_resource, isa_release_resource),
1021 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
1022 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
1023 DEVMETHOD(bus_setup_intr, isa_setup_intr),
1024 DEVMETHOD(bus_teardown_intr, isa_teardown_intr),
1025 DEVMETHOD(bus_set_resource, isa_set_resource),
1026 DEVMETHOD(bus_get_resource, isa_get_resource),
1027 DEVMETHOD(bus_delete_resource, isa_delete_resource),
1028
1029 /* ISA interface */
1030 DEVMETHOD(isa_add_config, isa_add_config),
1031 DEVMETHOD(isa_set_config_callback, isa_set_config_callback),
1032 DEVMETHOD(isa_pnp_probe, isa_pnp_probe),
1033
1034 { 0, 0 }
1035};
1036
1037static driver_t isa_driver = {
1038 "isa",
1039 isa_methods,
1040 1, /* no softc */
1041};
1042
1043/*
1044 * ISA can be attached to a PCI-ISA bridge or directly to the nexus.
1045 */
1046DRIVER_MODULE(isa, isab, isa_driver, isa_devclass, 0, 0);
1047#ifdef __i386__
1048DRIVER_MODULE(isa, nexus, isa_driver, isa_devclass, 0, 0);
1049#endif
1050