Remove scheduler define which was never used.
[dragonfly.git] / sys / bus / isa / isa_common.c
CommitLineData
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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 $
3e2bd555 27 * $DragonFly: src/sys/bus/isa/isa_common.c,v 1.6 2005/04/30 23:04:21 swildner Exp $
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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
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74#include "isavar.h"
75#include "isa_common.h"
984263bc 76
330ca0ab 77static int isa_print_child (device_t, device_t);
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78
79MALLOC_DEFINE(M_ISADEV, "isadev", "ISA device");
80
81static devclass_t isa_devclass;
82static int isa_running;
83
84/*
85 * At 'probe' time, we add all the devices which we know about to the
86 * bus. The generic attach routine will probe and attach them if they
87 * are alive.
88 */
89static int
90isa_probe(device_t dev)
91{
92 device_set_desc(dev, "ISA bus");
93 isa_init(); /* Allow machdep code to initialise */
94 return 0;
95}
96
97extern device_t isa_bus_device;
98
99static int
100isa_attach(device_t dev)
101{
102 /*
103 * Arrange for isa_probe_children(dev) to be called later. XXX
104 */
105 isa_bus_device = dev;
106 return 0;
107}
108
109/*
110 * Find a working set of memory regions for a child using the ranges
111 * in *config and return the regions in *result. Returns non-zero if
112 * a set of ranges was found.
113 */
114static int
115isa_find_memory(device_t child,
116 struct isa_config *config,
117 struct isa_config *result)
118{
119 int success, i;
120 struct resource *res[ISA_NMEM];
121
122 /*
123 * First clear out any existing resource definitions.
124 */
125 for (i = 0; i < ISA_NMEM; i++) {
126 bus_delete_resource(child, SYS_RES_MEMORY, i);
127 res[i] = NULL;
128 }
129
130 success = 1;
131 result->ic_nmem = config->ic_nmem;
132 for (i = 0; i < config->ic_nmem; i++) {
133 u_int32_t start, end, size, align;
134 for (start = config->ic_mem[i].ir_start,
135 end = config->ic_mem[i].ir_end,
136 size = config->ic_mem[i].ir_size,
137 align = config->ic_mem[i].ir_align;
138 start + size - 1 <= end;
139 start += align) {
140 bus_set_resource(child, SYS_RES_MEMORY, i,
141 start, size);
142 res[i] = bus_alloc_resource(child,
143 SYS_RES_MEMORY, &i,
144 0, ~0, 1, 0 /* !RF_ACTIVE */);
145 if (res[i]) {
146 result->ic_mem[i].ir_start = start;
147 result->ic_mem[i].ir_end = start + size - 1;
148 result->ic_mem[i].ir_size = size;
149 result->ic_mem[i].ir_align = align;
150 break;
151 }
152 }
153
154 /*
155 * If we didn't find a place for memory range i, then
156 * give up now.
157 */
158 if (!res[i]) {
159 success = 0;
160 break;
161 }
162 }
163
164 for (i = 0; i < ISA_NMEM; i++) {
165 if (res[i])
166 bus_release_resource(child, SYS_RES_MEMORY,
167 i, res[i]);
168 }
169
170 return success;
171}
172
173/*
174 * Find a working set of port regions for a child using the ranges
175 * in *config and return the regions in *result. Returns non-zero if
176 * a set of ranges was found.
177 */
178static int
179isa_find_port(device_t child,
180 struct isa_config *config,
181 struct isa_config *result)
182{
183 int success, i;
184 struct resource *res[ISA_NPORT];
185
186 /*
187 * First clear out any existing resource definitions.
188 */
189 for (i = 0; i < ISA_NPORT; i++) {
190 bus_delete_resource(child, SYS_RES_IOPORT, i);
191 res[i] = NULL;
192 }
193
194 success = 1;
195 result->ic_nport = config->ic_nport;
196 for (i = 0; i < config->ic_nport; i++) {
197 u_int32_t start, end, size, align;
198 for (start = config->ic_port[i].ir_start,
199 end = config->ic_port[i].ir_end,
200 size = config->ic_port[i].ir_size,
201 align = config->ic_port[i].ir_align;
202 start + size - 1 <= end;
203 start += align) {
204 bus_set_resource(child, SYS_RES_IOPORT, i,
205 start, size);
206 res[i] = bus_alloc_resource(child,
207 SYS_RES_IOPORT, &i,
208 0, ~0, 1, 0 /* !RF_ACTIVE */);
209 if (res[i]) {
210 result->ic_port[i].ir_start = start;
211 result->ic_port[i].ir_end = start + size - 1;
212 result->ic_port[i].ir_size = size;
213 result->ic_port[i].ir_align = align;
214 break;
215 }
216 }
217
218 /*
219 * If we didn't find a place for port range i, then
220 * give up now.
221 */
222 if (!res[i]) {
223 success = 0;
224 break;
225 }
226 }
227
228 for (i = 0; i < ISA_NPORT; i++) {
229 if (res[i])
230 bus_release_resource(child, SYS_RES_IOPORT,
231 i, res[i]);
232 }
233
234 return success;
235}
236
237/*
238 * Return the index of the first bit in the mask (or -1 if mask is empty.
239 */
240static int
241find_first_bit(u_int32_t mask)
242{
243 return ffs(mask) - 1;
244}
245
246/*
247 * Return the index of the next bit in the mask, or -1 if there are no more.
248 */
249static int
250find_next_bit(u_int32_t mask, int bit)
251{
252 bit++;
253 while (bit < 32 && !(mask & (1 << bit)))
254 bit++;
255 if (bit != 32)
256 return bit;
257 return -1;
258}
259
260/*
261 * Find a working set of irqs for a child using the masks in *config
262 * and return the regions in *result. Returns non-zero if a set of
263 * irqs was found.
264 */
265static int
266isa_find_irq(device_t child,
267 struct isa_config *config,
268 struct isa_config *result)
269{
270 int success, i;
271 struct resource *res[ISA_NIRQ];
272
273 /*
274 * First clear out any existing resource definitions.
275 */
276 for (i = 0; i < ISA_NIRQ; i++) {
277 bus_delete_resource(child, SYS_RES_IRQ, i);
278 res[i] = NULL;
279 }
280
281 success = 1;
282 result->ic_nirq = config->ic_nirq;
283 for (i = 0; i < config->ic_nirq; i++) {
284 u_int32_t mask = config->ic_irqmask[i];
285 int irq;
286 for (irq = find_first_bit(mask);
287 irq != -1;
288 irq = find_next_bit(mask, irq)) {
289 bus_set_resource(child, SYS_RES_IRQ, i,
290 irq, 1);
291 res[i] = bus_alloc_resource(child,
292 SYS_RES_IRQ, &i,
293 0, ~0, 1, 0 /* !RF_ACTIVE */ );
294 if (res[i]) {
295 result->ic_irqmask[i] = (1 << irq);
296 break;
297 }
298 }
299
300 /*
301 * If we didn't find a place for irq range i, then
302 * give up now.
303 */
304 if (!res[i]) {
305 success = 0;
306 break;
307 }
308 }
309
310 for (i = 0; i < ISA_NIRQ; i++) {
311 if (res[i])
312 bus_release_resource(child, SYS_RES_IRQ,
313 i, res[i]);
314 }
315
316 return success;
317}
318
319/*
320 * Find a working set of drqs for a child using the masks in *config
321 * and return the regions in *result. Returns non-zero if a set of
322 * drqs was found.
323 */
324static int
325isa_find_drq(device_t child,
326 struct isa_config *config,
327 struct isa_config *result)
328{
329 int success, i;
330 struct resource *res[ISA_NDRQ];
331
332 /*
333 * First clear out any existing resource definitions.
334 */
335 for (i = 0; i < ISA_NDRQ; i++) {
336 bus_delete_resource(child, SYS_RES_DRQ, i);
337 res[i] = NULL;
338 }
339
340 success = 1;
341 result->ic_ndrq = config->ic_ndrq;
342 for (i = 0; i < config->ic_ndrq; i++) {
343 u_int32_t mask = config->ic_drqmask[i];
344 int drq;
345 for (drq = find_first_bit(mask);
346 drq != -1;
347 drq = find_next_bit(mask, drq)) {
348 bus_set_resource(child, SYS_RES_DRQ, i,
349 drq, 1);
350 res[i] = bus_alloc_resource(child,
351 SYS_RES_DRQ, &i,
352 0, ~0, 1, 0 /* !RF_ACTIVE */);
353 if (res[i]) {
354 result->ic_drqmask[i] = (1 << drq);
355 break;
356 }
357 }
358
359 /*
360 * If we didn't find a place for drq range i, then
361 * give up now.
362 */
363 if (!res[i]) {
364 success = 0;
365 break;
366 }
367 }
368
369 for (i = 0; i < ISA_NDRQ; i++) {
370 if (res[i])
371 bus_release_resource(child, SYS_RES_DRQ,
372 i, res[i]);
373 }
374
375 return success;
376}
377
378/*
379 * Attempt to find a working set of resources for a device. Return
380 * non-zero if a working configuration is found.
381 */
382static int
383isa_assign_resources(device_t child)
384{
385 struct isa_device *idev = DEVTOISA(child);
386 struct isa_config_entry *ice;
387 struct isa_config config;
388
389 bzero(&config, sizeof config);
390 TAILQ_FOREACH(ice, &idev->id_configs, ice_link) {
391 if (!isa_find_memory(child, &ice->ice_config, &config))
392 continue;
393 if (!isa_find_port(child, &ice->ice_config, &config))
394 continue;
395 if (!isa_find_irq(child, &ice->ice_config, &config))
396 continue;
397 if (!isa_find_drq(child, &ice->ice_config, &config))
398 continue;
399
400 /*
401 * A working configuration was found enable the device
402 * with this configuration.
403 */
404 if (idev->id_config_cb) {
405 idev->id_config_cb(idev->id_config_arg,
406 &config, 1);
407 return 1;
408 }
409 }
410
411 /*
412 * Disable the device.
413 */
414 bus_print_child_header(device_get_parent(child), child);
415 printf(" can't assign resources\n");
416 if (bootverbose)
417 isa_print_child(device_get_parent(child), child);
418 bzero(&config, sizeof config);
419 if (idev->id_config_cb)
420 idev->id_config_cb(idev->id_config_arg, &config, 0);
421 device_disable(child);
422
423 return 0;
424}
425
426/*
427 * Called after other devices have initialised to probe for isa devices.
428 */
429void
430isa_probe_children(device_t dev)
431{
432 device_t *children;
433 int nchildren, i;
434
435 /*
436 * Create all the children by calling driver's identify methods.
437 */
438 bus_generic_probe(dev);
439
440 if (device_get_children(dev, &children, &nchildren))
441 return;
442
443 /*
444 * First disable all pnp devices so that they don't get
445 * matched by legacy probes.
446 */
447 if (bootverbose)
448 printf("isa_probe_children: disabling PnP devices\n");
449 for (i = 0; i < nchildren; i++) {
450 device_t child = children[i];
451 struct isa_device *idev = DEVTOISA(child);
452 struct isa_config config;
453
454 bzero(&config, sizeof config);
455 if (idev->id_config_cb)
456 idev->id_config_cb(idev->id_config_arg, &config, 0);
457 }
458
459 /*
460 * Next probe all non-pnp devices so that they claim their
461 * resources first.
462 */
463 if (bootverbose)
464 printf("isa_probe_children: probing non-PnP devices\n");
465 for (i = 0; i < nchildren; i++) {
466 device_t child = children[i];
467 struct isa_device *idev = DEVTOISA(child);
468
469 if (TAILQ_FIRST(&idev->id_configs))
470 continue;
471
472 device_probe_and_attach(child);
473 }
474
475 /*
476 * Finally assign resource to pnp devices and probe them.
477 */
478 if (bootverbose)
479 printf("isa_probe_children: probing PnP devices\n");
480 for (i = 0; i < nchildren; i++) {
481 device_t child = children[i];
482 struct isa_device* idev = DEVTOISA(child);
483
484 if (!TAILQ_FIRST(&idev->id_configs))
485 continue;
486
487 if (isa_assign_resources(child)) {
488 struct resource_list *rl = &idev->id_resources;
489 struct resource_list_entry *rle;
490
491 device_probe_and_attach(child);
492
493 /*
494 * Claim any unallocated resources to keep other
495 * devices from using them.
496 */
497 SLIST_FOREACH(rle, rl, link) {
498 if (!rle->res) {
499 int rid = rle->rid;
500 resource_list_alloc(rl, dev, child,
501 rle->type,
502 &rid,
503 0, ~0, 1,
504 0 /* !RF_ACTIVE */);
505 }
506 }
507 }
508 }
509
510 free(children, M_TEMP);
511
512 isa_running = 1;
513}
514
515/*
516 * Add a new child with default ivars.
517 */
518static device_t
519isa_add_child(device_t dev, int order, const char *name, int unit)
520{
521 device_t child;
522 struct isa_device *idev;
523
6c4c657b 524 idev = malloc(sizeof(struct isa_device), M_ISADEV, M_WAITOK | M_ZERO);
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525
526 resource_list_init(&idev->id_resources);
527 TAILQ_INIT(&idev->id_configs);
528
529 child = device_add_child_ordered(dev, order, name, unit);
530 device_set_ivars(child, idev);
531
532 return child;
533}
534
535static int
536isa_print_resources(struct resource_list *rl, const char *name, int type,
537 int count, const char *format)
538{
539 struct resource_list_entry *rle;
540 int printed;
541 int i, retval = 0;;
542
543 printed = 0;
544 for (i = 0; i < count; i++) {
545 rle = resource_list_find(rl, type, i);
546 if (rle) {
547 if (printed == 0)
548 retval += printf(" %s ", name);
549 else if (printed > 0)
550 retval += printf(",");
551 printed++;
552 retval += printf(format, rle->start);
553 if (rle->count > 1) {
554 retval += printf("-");
555 retval += printf(format,
556 rle->start + rle->count - 1);
557 }
558 } else if (i > 3) {
559 /* check the first few regardless */
560 break;
561 }
562 }
563 return retval;
564}
565
566static int
567isa_print_all_resources(device_t dev)
568{
569 struct isa_device *idev = DEVTOISA(dev);
570 struct resource_list *rl = &idev->id_resources;
571 int retval = 0;
572
573 if (SLIST_FIRST(rl) || device_get_flags(dev))
574 retval += printf(" at");
575
576 retval += isa_print_resources(rl, "port", SYS_RES_IOPORT,
577 ISA_NPORT, "%#lx");
578 retval += isa_print_resources(rl, "iomem", SYS_RES_MEMORY,
579 ISA_NMEM, "%#lx");
580 retval += isa_print_resources(rl, "irq", SYS_RES_IRQ,
581 ISA_NIRQ, "%ld");
582 retval += isa_print_resources(rl, "drq", SYS_RES_DRQ,
583 ISA_NDRQ, "%ld");
584 if (device_get_flags(dev))
585 retval += printf(" flags %#x", device_get_flags(dev));
586
587 return retval;
588}
589
590static int
591isa_print_child(device_t bus, device_t dev)
592{
593 int retval = 0;
594
595 retval += bus_print_child_header(bus, dev);
596 retval += isa_print_all_resources(dev);
597 retval += bus_print_child_footer(bus, dev);
598
599 return (retval);
600}
601
602static void
603isa_probe_nomatch(device_t dev, device_t child)
604{
605 if (bootverbose) {
606 bus_print_child_header(dev, child);
607 printf(" failed to probe");
608 isa_print_all_resources(child);
609 bus_print_child_footer(dev, child);
610 }
611
612 return;
613}
614
615static int
616isa_read_ivar(device_t bus, device_t dev, int index, uintptr_t * result)
617{
618 struct isa_device* idev = DEVTOISA(dev);
619 struct resource_list *rl = &idev->id_resources;
620 struct resource_list_entry *rle;
621
622 switch (index) {
623 case ISA_IVAR_PORT_0:
624 rle = resource_list_find(rl, SYS_RES_IOPORT, 0);
625 if (rle)
626 *result = rle->start;
627 else
628 *result = -1;
629 break;
630
631 case ISA_IVAR_PORT_1:
632 rle = resource_list_find(rl, SYS_RES_IOPORT, 1);
633 if (rle)
634 *result = rle->start;
635 else
636 *result = -1;
637 break;
638
639 case ISA_IVAR_PORTSIZE_0:
640 rle = resource_list_find(rl, SYS_RES_IOPORT, 0);
641 if (rle)
642 *result = rle->count;
643 else
644 *result = 0;
645 break;
646
647 case ISA_IVAR_PORTSIZE_1:
648 rle = resource_list_find(rl, SYS_RES_IOPORT, 1);
649 if (rle)
650 *result = rle->count;
651 else
652 *result = 0;
653 break;
654
655 case ISA_IVAR_MADDR_0:
656 rle = resource_list_find(rl, SYS_RES_MEMORY, 0);
657 if (rle)
658 *result = rle->start;
659 else
660 *result = -1;
661 break;
662
663 case ISA_IVAR_MADDR_1:
664 rle = resource_list_find(rl, SYS_RES_MEMORY, 1);
665 if (rle)
666 *result = rle->start;
667 else
668 *result = -1;
669 break;
670
671 case ISA_IVAR_MSIZE_0:
672 rle = resource_list_find(rl, SYS_RES_MEMORY, 0);
673 if (rle)
674 *result = rle->count;
675 else
676 *result = 0;
677 break;
678
679 case ISA_IVAR_MSIZE_1:
680 rle = resource_list_find(rl, SYS_RES_MEMORY, 1);
681 if (rle)
682 *result = rle->count;
683 else
684 *result = 0;
685 break;
686
687 case ISA_IVAR_IRQ_0:
688 rle = resource_list_find(rl, SYS_RES_IRQ, 0);
689 if (rle)
690 *result = rle->start;
691 else
692 *result = -1;
693 break;
694
695 case ISA_IVAR_IRQ_1:
696 rle = resource_list_find(rl, SYS_RES_IRQ, 1);
697 if (rle)
698 *result = rle->start;
699 else
700 *result = -1;
701 break;
702
703 case ISA_IVAR_DRQ_0:
704 rle = resource_list_find(rl, SYS_RES_DRQ, 0);
705 if (rle)
706 *result = rle->start;
707 else
708 *result = -1;
709 break;
710
711 case ISA_IVAR_DRQ_1:
712 rle = resource_list_find(rl, SYS_RES_DRQ, 1);
713 if (rle)
714 *result = rle->start;
715 else
716 *result = -1;
717 break;
718
719 case ISA_IVAR_VENDORID:
720 *result = idev->id_vendorid;
721 break;
722
723 case ISA_IVAR_SERIAL:
724 *result = idev->id_serial;
725 break;
726
727 case ISA_IVAR_LOGICALID:
728 *result = idev->id_logicalid;
729 break;
730
731 case ISA_IVAR_COMPATID:
732 *result = idev->id_compatid;
733 break;
734
735 default:
736 return ENOENT;
737 }
738
739 return 0;
740}
741
742static int
743isa_write_ivar(device_t bus, device_t dev,
744 int index, uintptr_t value)
745{
746 struct isa_device* idev = DEVTOISA(dev);
747
748 switch (index) {
749 case ISA_IVAR_PORT_0:
750 case ISA_IVAR_PORT_1:
751 case ISA_IVAR_PORTSIZE_0:
752 case ISA_IVAR_PORTSIZE_1:
753 case ISA_IVAR_MADDR_0:
754 case ISA_IVAR_MADDR_1:
755 case ISA_IVAR_MSIZE_0:
756 case ISA_IVAR_MSIZE_1:
757 case ISA_IVAR_IRQ_0:
758 case ISA_IVAR_IRQ_1:
759 case ISA_IVAR_DRQ_0:
760 case ISA_IVAR_DRQ_1:
761 return EINVAL;
762
763 case ISA_IVAR_VENDORID:
764 idev->id_vendorid = value;
765 break;
766
767 case ISA_IVAR_SERIAL:
768 idev->id_serial = value;
769 break;
770
771 case ISA_IVAR_LOGICALID:
772 idev->id_logicalid = value;
773 break;
774
775 case ISA_IVAR_COMPATID:
776 idev->id_compatid = value;
777 break;
778
779 default:
780 return (ENOENT);
781 }
782
783 return (0);
784}
785
786/*
787 * Free any resources which the driver missed or which we were holding for
788 * it (see isa_probe_children).
789 */
790static void
791isa_child_detached(device_t dev, device_t child)
792{
793 struct isa_device* idev = DEVTOISA(child);
794 struct resource_list *rl = &idev->id_resources;
795 struct resource_list_entry *rle;
796
797 if (TAILQ_FIRST(&idev->id_configs)) {
798 /*
799 * Claim any unallocated resources to keep other
800 * devices from using them.
801 */
802 SLIST_FOREACH(rle, rl, link) {
803 if (!rle->res) {
804 int rid = rle->rid;
805 resource_list_alloc(rl, dev, child,
806 rle->type,
807 &rid, 0, ~0, 1, 0);
808 }
809 }
810 }
811}
812
813static void
814isa_driver_added(device_t dev, driver_t *driver)
815{
816 device_t *children;
817 int nchildren, i;
818
819 /*
820 * Don't do anything if drivers are dynamically
821 * added during autoconfiguration (cf. ymf724).
822 * since that would end up calling identify
823 * twice.
824 */
825 if (!isa_running)
826 return;
827
828 DEVICE_IDENTIFY(driver, dev);
829 if (device_get_children(dev, &children, &nchildren))
830 return;
831
832 for (i = 0; i < nchildren; i++) {
833 device_t child = children[i];
834 struct isa_device *idev = DEVTOISA(child);
835 struct resource_list *rl = &idev->id_resources;
836 struct resource_list_entry *rle;
837
838 if (device_get_state(child) != DS_NOTPRESENT)
839 continue;
840 if (!device_is_enabled(child))
841 continue;
842
843 /*
844 * Free resources which we were holding on behalf of
845 * the device.
846 */
847 SLIST_FOREACH(rle, &idev->id_resources, link) {
848 if (rle->res)
849 resource_list_release(rl, dev, child,
850 rle->type,
851 rle->rid,
852 rle->res);
853 }
854
855 if (TAILQ_FIRST(&idev->id_configs))
856 if (!isa_assign_resources(child))
857 continue;
858
859 device_probe_and_attach(child);
860
861 if (TAILQ_FIRST(&idev->id_configs)) {
862 /*
863 * Claim any unallocated resources to keep other
864 * devices from using them.
865 */
866 SLIST_FOREACH(rle, rl, link) {
867 if (!rle->res) {
868 int rid = rle->rid;
869 resource_list_alloc(rl, dev, child,
870 rle->type,
871 &rid,
872 0, ~0, 1,
873 0 /* !RF_ACTIVE */);
874 }
875 }
876 }
877 }
878
879 free(children, M_TEMP);
880}
881
882static int
883isa_set_resource(device_t dev, device_t child, int type, int rid,
884 u_long start, u_long count)
885{
886 struct isa_device* idev = DEVTOISA(child);
887 struct resource_list *rl = &idev->id_resources;
888
889 if (type != SYS_RES_IOPORT && type != SYS_RES_MEMORY
890 && type != SYS_RES_IRQ && type != SYS_RES_DRQ)
891 return EINVAL;
892 if (rid < 0)
893 return EINVAL;
894 if (type == SYS_RES_IOPORT && rid >= ISA_NPORT)
895 return EINVAL;
896 if (type == SYS_RES_MEMORY && rid >= ISA_NMEM)
897 return EINVAL;
898 if (type == SYS_RES_IRQ && rid >= ISA_NIRQ)
899 return EINVAL;
900 if (type == SYS_RES_DRQ && rid >= ISA_NDRQ)
901 return EINVAL;
902
903 resource_list_add(rl, type, rid, start, start + count - 1, count);
904
905 return 0;
906}
907
908static int
909isa_get_resource(device_t dev, device_t child, int type, int rid,
910 u_long *startp, u_long *countp)
911{
912 struct isa_device* idev = DEVTOISA(child);
913 struct resource_list *rl = &idev->id_resources;
914 struct resource_list_entry *rle;
915
916 rle = resource_list_find(rl, type, rid);
917 if (!rle)
918 return ENOENT;
919
920 if (startp)
921 *startp = rle->start;
922 if (countp)
923 *countp = rle->count;
924
925 return 0;
926}
927
928static void
929isa_delete_resource(device_t dev, device_t child, int type, int rid)
930{
931 struct isa_device* idev = DEVTOISA(child);
932 struct resource_list *rl = &idev->id_resources;
933 resource_list_delete(rl, type, rid);
934}
935
936static int
937isa_add_config(device_t dev, device_t child,
938 int priority, struct isa_config *config)
939{
940 struct isa_device* idev = DEVTOISA(child);
941 struct isa_config_entry *newice, *ice;
942
6c4c657b 943 newice = malloc(sizeof *ice, M_DEVBUF, M_WAITOK);
984263bc
MD
944 newice->ice_priority = priority;
945 newice->ice_config = *config;
946
947 TAILQ_FOREACH(ice, &idev->id_configs, ice_link) {
948 if (ice->ice_priority > priority)
949 break;
950 }
951 if (ice)
952 TAILQ_INSERT_BEFORE(ice, newice, ice_link);
953 else
954 TAILQ_INSERT_TAIL(&idev->id_configs, newice, ice_link);
955
956 return 0;
957}
958
959static void
960isa_set_config_callback(device_t dev, device_t child,
961 isa_config_cb *fn, void *arg)
962{
963 struct isa_device* idev = DEVTOISA(child);
964
965 idev->id_config_cb = fn;
966 idev->id_config_arg = arg;
967}
968
969static int
970isa_pnp_probe(device_t dev, device_t child, struct isa_pnp_id *ids)
971{
972 struct isa_device* idev = DEVTOISA(child);
973
974 if (!idev->id_vendorid)
975 return ENOENT;
976
977 while (ids->ip_id) {
978 /*
979 * Really ought to support >1 compat id per device.
980 */
981 if (idev->id_logicalid == ids->ip_id
982 || idev->id_compatid == ids->ip_id) {
983 if (ids->ip_desc)
984 device_set_desc(child, ids->ip_desc);
985 return 0;
986 }
987 ids++;
988 }
989
990 return ENXIO;
991}
992
993static device_method_t isa_methods[] = {
994 /* Device interface */
995 DEVMETHOD(device_probe, isa_probe),
996 DEVMETHOD(device_attach, isa_attach),
997 DEVMETHOD(device_detach, bus_generic_detach),
998 DEVMETHOD(device_shutdown, bus_generic_shutdown),
999 DEVMETHOD(device_suspend, bus_generic_suspend),
1000 DEVMETHOD(device_resume, bus_generic_resume),
1001
1002 /* Bus interface */
1003 DEVMETHOD(bus_add_child, isa_add_child),
1004 DEVMETHOD(bus_print_child, isa_print_child),
1005 DEVMETHOD(bus_probe_nomatch, isa_probe_nomatch),
1006 DEVMETHOD(bus_read_ivar, isa_read_ivar),
1007 DEVMETHOD(bus_write_ivar, isa_write_ivar),
1008 DEVMETHOD(bus_child_detached, isa_child_detached),
1009 DEVMETHOD(bus_driver_added, isa_driver_added),
1010 DEVMETHOD(bus_alloc_resource, isa_alloc_resource),
1011 DEVMETHOD(bus_release_resource, isa_release_resource),
1012 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
1013 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
1014 DEVMETHOD(bus_setup_intr, isa_setup_intr),
1015 DEVMETHOD(bus_teardown_intr, isa_teardown_intr),
1016 DEVMETHOD(bus_set_resource, isa_set_resource),
1017 DEVMETHOD(bus_get_resource, isa_get_resource),
1018 DEVMETHOD(bus_delete_resource, isa_delete_resource),
1019
1020 /* ISA interface */
1021 DEVMETHOD(isa_add_config, isa_add_config),
1022 DEVMETHOD(isa_set_config_callback, isa_set_config_callback),
1023 DEVMETHOD(isa_pnp_probe, isa_pnp_probe),
1024
1025 { 0, 0 }
1026};
1027
1028static driver_t isa_driver = {
1029 "isa",
1030 isa_methods,
1031 1, /* no softc */
1032};
1033
1034/*
1035 * ISA can be attached to a PCI-ISA bridge or directly to the nexus.
1036 */
1037DRIVER_MODULE(isa, isab, isa_driver, isa_devclass, 0, 0);
1038#ifdef __i386__
1039DRIVER_MODULE(isa, nexus, isa_driver, isa_devclass, 0, 0);
1040#endif
1041