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[dragonfly.git] / sys / bus / isa / isa_common.c
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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 $
6c4c657b 27 * $DragonFly: src/sys/bus/isa/isa_common.c,v 1.5 2004/04/07 05:54:32 dillon 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#ifdef __alpha__ /* XXX workaround a stupid warning */
1f2de5d4 77#include "isavar.h"
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78#endif
79
330ca0ab 80static int isa_print_child (device_t, device_t);
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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
6c4c657b 527 idev = malloc(sizeof(struct isa_device), M_ISADEV, M_WAITOK | M_ZERO);
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528
529 resource_list_init(&idev->id_resources);
530 TAILQ_INIT(&idev->id_configs);
531
532 child = device_add_child_ordered(dev, order, name, unit);
533 device_set_ivars(child, idev);
534
535 return child;
536}
537
538static int
539isa_print_resources(struct resource_list *rl, const char *name, int type,
540 int count, const char *format)
541{
542 struct resource_list_entry *rle;
543 int printed;
544 int i, retval = 0;;
545
546 printed = 0;
547 for (i = 0; i < count; i++) {
548 rle = resource_list_find(rl, type, i);
549 if (rle) {
550 if (printed == 0)
551 retval += printf(" %s ", name);
552 else if (printed > 0)
553 retval += printf(",");
554 printed++;
555 retval += printf(format, rle->start);
556 if (rle->count > 1) {
557 retval += printf("-");
558 retval += printf(format,
559 rle->start + rle->count - 1);
560 }
561 } else if (i > 3) {
562 /* check the first few regardless */
563 break;
564 }
565 }
566 return retval;
567}
568
569static int
570isa_print_all_resources(device_t dev)
571{
572 struct isa_device *idev = DEVTOISA(dev);
573 struct resource_list *rl = &idev->id_resources;
574 int retval = 0;
575
576 if (SLIST_FIRST(rl) || device_get_flags(dev))
577 retval += printf(" at");
578
579 retval += isa_print_resources(rl, "port", SYS_RES_IOPORT,
580 ISA_NPORT, "%#lx");
581 retval += isa_print_resources(rl, "iomem", SYS_RES_MEMORY,
582 ISA_NMEM, "%#lx");
583 retval += isa_print_resources(rl, "irq", SYS_RES_IRQ,
584 ISA_NIRQ, "%ld");
585 retval += isa_print_resources(rl, "drq", SYS_RES_DRQ,
586 ISA_NDRQ, "%ld");
587 if (device_get_flags(dev))
588 retval += printf(" flags %#x", device_get_flags(dev));
589
590 return retval;
591}
592
593static int
594isa_print_child(device_t bus, device_t dev)
595{
596 int retval = 0;
597
598 retval += bus_print_child_header(bus, dev);
599 retval += isa_print_all_resources(dev);
600 retval += bus_print_child_footer(bus, dev);
601
602 return (retval);
603}
604
605static void
606isa_probe_nomatch(device_t dev, device_t child)
607{
608 if (bootverbose) {
609 bus_print_child_header(dev, child);
610 printf(" failed to probe");
611 isa_print_all_resources(child);
612 bus_print_child_footer(dev, child);
613 }
614
615 return;
616}
617
618static int
619isa_read_ivar(device_t bus, device_t dev, int index, uintptr_t * result)
620{
621 struct isa_device* idev = DEVTOISA(dev);
622 struct resource_list *rl = &idev->id_resources;
623 struct resource_list_entry *rle;
624
625 switch (index) {
626 case ISA_IVAR_PORT_0:
627 rle = resource_list_find(rl, SYS_RES_IOPORT, 0);
628 if (rle)
629 *result = rle->start;
630 else
631 *result = -1;
632 break;
633
634 case ISA_IVAR_PORT_1:
635 rle = resource_list_find(rl, SYS_RES_IOPORT, 1);
636 if (rle)
637 *result = rle->start;
638 else
639 *result = -1;
640 break;
641
642 case ISA_IVAR_PORTSIZE_0:
643 rle = resource_list_find(rl, SYS_RES_IOPORT, 0);
644 if (rle)
645 *result = rle->count;
646 else
647 *result = 0;
648 break;
649
650 case ISA_IVAR_PORTSIZE_1:
651 rle = resource_list_find(rl, SYS_RES_IOPORT, 1);
652 if (rle)
653 *result = rle->count;
654 else
655 *result = 0;
656 break;
657
658 case ISA_IVAR_MADDR_0:
659 rle = resource_list_find(rl, SYS_RES_MEMORY, 0);
660 if (rle)
661 *result = rle->start;
662 else
663 *result = -1;
664 break;
665
666 case ISA_IVAR_MADDR_1:
667 rle = resource_list_find(rl, SYS_RES_MEMORY, 1);
668 if (rle)
669 *result = rle->start;
670 else
671 *result = -1;
672 break;
673
674 case ISA_IVAR_MSIZE_0:
675 rle = resource_list_find(rl, SYS_RES_MEMORY, 0);
676 if (rle)
677 *result = rle->count;
678 else
679 *result = 0;
680 break;
681
682 case ISA_IVAR_MSIZE_1:
683 rle = resource_list_find(rl, SYS_RES_MEMORY, 1);
684 if (rle)
685 *result = rle->count;
686 else
687 *result = 0;
688 break;
689
690 case ISA_IVAR_IRQ_0:
691 rle = resource_list_find(rl, SYS_RES_IRQ, 0);
692 if (rle)
693 *result = rle->start;
694 else
695 *result = -1;
696 break;
697
698 case ISA_IVAR_IRQ_1:
699 rle = resource_list_find(rl, SYS_RES_IRQ, 1);
700 if (rle)
701 *result = rle->start;
702 else
703 *result = -1;
704 break;
705
706 case ISA_IVAR_DRQ_0:
707 rle = resource_list_find(rl, SYS_RES_DRQ, 0);
708 if (rle)
709 *result = rle->start;
710 else
711 *result = -1;
712 break;
713
714 case ISA_IVAR_DRQ_1:
715 rle = resource_list_find(rl, SYS_RES_DRQ, 1);
716 if (rle)
717 *result = rle->start;
718 else
719 *result = -1;
720 break;
721
722 case ISA_IVAR_VENDORID:
723 *result = idev->id_vendorid;
724 break;
725
726 case ISA_IVAR_SERIAL:
727 *result = idev->id_serial;
728 break;
729
730 case ISA_IVAR_LOGICALID:
731 *result = idev->id_logicalid;
732 break;
733
734 case ISA_IVAR_COMPATID:
735 *result = idev->id_compatid;
736 break;
737
738 default:
739 return ENOENT;
740 }
741
742 return 0;
743}
744
745static int
746isa_write_ivar(device_t bus, device_t dev,
747 int index, uintptr_t value)
748{
749 struct isa_device* idev = DEVTOISA(dev);
750
751 switch (index) {
752 case ISA_IVAR_PORT_0:
753 case ISA_IVAR_PORT_1:
754 case ISA_IVAR_PORTSIZE_0:
755 case ISA_IVAR_PORTSIZE_1:
756 case ISA_IVAR_MADDR_0:
757 case ISA_IVAR_MADDR_1:
758 case ISA_IVAR_MSIZE_0:
759 case ISA_IVAR_MSIZE_1:
760 case ISA_IVAR_IRQ_0:
761 case ISA_IVAR_IRQ_1:
762 case ISA_IVAR_DRQ_0:
763 case ISA_IVAR_DRQ_1:
764 return EINVAL;
765
766 case ISA_IVAR_VENDORID:
767 idev->id_vendorid = value;
768 break;
769
770 case ISA_IVAR_SERIAL:
771 idev->id_serial = value;
772 break;
773
774 case ISA_IVAR_LOGICALID:
775 idev->id_logicalid = value;
776 break;
777
778 case ISA_IVAR_COMPATID:
779 idev->id_compatid = value;
780 break;
781
782 default:
783 return (ENOENT);
784 }
785
786 return (0);
787}
788
789/*
790 * Free any resources which the driver missed or which we were holding for
791 * it (see isa_probe_children).
792 */
793static void
794isa_child_detached(device_t dev, device_t child)
795{
796 struct isa_device* idev = DEVTOISA(child);
797 struct resource_list *rl = &idev->id_resources;
798 struct resource_list_entry *rle;
799
800 if (TAILQ_FIRST(&idev->id_configs)) {
801 /*
802 * Claim any unallocated resources to keep other
803 * devices from using them.
804 */
805 SLIST_FOREACH(rle, rl, link) {
806 if (!rle->res) {
807 int rid = rle->rid;
808 resource_list_alloc(rl, dev, child,
809 rle->type,
810 &rid, 0, ~0, 1, 0);
811 }
812 }
813 }
814}
815
816static void
817isa_driver_added(device_t dev, driver_t *driver)
818{
819 device_t *children;
820 int nchildren, i;
821
822 /*
823 * Don't do anything if drivers are dynamically
824 * added during autoconfiguration (cf. ymf724).
825 * since that would end up calling identify
826 * twice.
827 */
828 if (!isa_running)
829 return;
830
831 DEVICE_IDENTIFY(driver, dev);
832 if (device_get_children(dev, &children, &nchildren))
833 return;
834
835 for (i = 0; i < nchildren; i++) {
836 device_t child = children[i];
837 struct isa_device *idev = DEVTOISA(child);
838 struct resource_list *rl = &idev->id_resources;
839 struct resource_list_entry *rle;
840
841 if (device_get_state(child) != DS_NOTPRESENT)
842 continue;
843 if (!device_is_enabled(child))
844 continue;
845
846 /*
847 * Free resources which we were holding on behalf of
848 * the device.
849 */
850 SLIST_FOREACH(rle, &idev->id_resources, link) {
851 if (rle->res)
852 resource_list_release(rl, dev, child,
853 rle->type,
854 rle->rid,
855 rle->res);
856 }
857
858 if (TAILQ_FIRST(&idev->id_configs))
859 if (!isa_assign_resources(child))
860 continue;
861
862 device_probe_and_attach(child);
863
864 if (TAILQ_FIRST(&idev->id_configs)) {
865 /*
866 * Claim any unallocated resources to keep other
867 * devices from using them.
868 */
869 SLIST_FOREACH(rle, rl, link) {
870 if (!rle->res) {
871 int rid = rle->rid;
872 resource_list_alloc(rl, dev, child,
873 rle->type,
874 &rid,
875 0, ~0, 1,
876 0 /* !RF_ACTIVE */);
877 }
878 }
879 }
880 }
881
882 free(children, M_TEMP);
883}
884
885static int
886isa_set_resource(device_t dev, device_t child, int type, int rid,
887 u_long start, u_long count)
888{
889 struct isa_device* idev = DEVTOISA(child);
890 struct resource_list *rl = &idev->id_resources;
891
892 if (type != SYS_RES_IOPORT && type != SYS_RES_MEMORY
893 && type != SYS_RES_IRQ && type != SYS_RES_DRQ)
894 return EINVAL;
895 if (rid < 0)
896 return EINVAL;
897 if (type == SYS_RES_IOPORT && rid >= ISA_NPORT)
898 return EINVAL;
899 if (type == SYS_RES_MEMORY && rid >= ISA_NMEM)
900 return EINVAL;
901 if (type == SYS_RES_IRQ && rid >= ISA_NIRQ)
902 return EINVAL;
903 if (type == SYS_RES_DRQ && rid >= ISA_NDRQ)
904 return EINVAL;
905
906 resource_list_add(rl, type, rid, start, start + count - 1, count);
907
908 return 0;
909}
910
911static int
912isa_get_resource(device_t dev, device_t child, int type, int rid,
913 u_long *startp, u_long *countp)
914{
915 struct isa_device* idev = DEVTOISA(child);
916 struct resource_list *rl = &idev->id_resources;
917 struct resource_list_entry *rle;
918
919 rle = resource_list_find(rl, type, rid);
920 if (!rle)
921 return ENOENT;
922
923 if (startp)
924 *startp = rle->start;
925 if (countp)
926 *countp = rle->count;
927
928 return 0;
929}
930
931static void
932isa_delete_resource(device_t dev, device_t child, int type, int rid)
933{
934 struct isa_device* idev = DEVTOISA(child);
935 struct resource_list *rl = &idev->id_resources;
936 resource_list_delete(rl, type, rid);
937}
938
939static int
940isa_add_config(device_t dev, device_t child,
941 int priority, struct isa_config *config)
942{
943 struct isa_device* idev = DEVTOISA(child);
944 struct isa_config_entry *newice, *ice;
945
6c4c657b 946 newice = malloc(sizeof *ice, M_DEVBUF, M_WAITOK);
984263bc
MD
947 newice->ice_priority = priority;
948 newice->ice_config = *config;
949
950 TAILQ_FOREACH(ice, &idev->id_configs, ice_link) {
951 if (ice->ice_priority > priority)
952 break;
953 }
954 if (ice)
955 TAILQ_INSERT_BEFORE(ice, newice, ice_link);
956 else
957 TAILQ_INSERT_TAIL(&idev->id_configs, newice, ice_link);
958
959 return 0;
960}
961
962static void
963isa_set_config_callback(device_t dev, device_t child,
964 isa_config_cb *fn, void *arg)
965{
966 struct isa_device* idev = DEVTOISA(child);
967
968 idev->id_config_cb = fn;
969 idev->id_config_arg = arg;
970}
971
972static int
973isa_pnp_probe(device_t dev, device_t child, struct isa_pnp_id *ids)
974{
975 struct isa_device* idev = DEVTOISA(child);
976
977 if (!idev->id_vendorid)
978 return ENOENT;
979
980 while (ids->ip_id) {
981 /*
982 * Really ought to support >1 compat id per device.
983 */
984 if (idev->id_logicalid == ids->ip_id
985 || idev->id_compatid == ids->ip_id) {
986 if (ids->ip_desc)
987 device_set_desc(child, ids->ip_desc);
988 return 0;
989 }
990 ids++;
991 }
992
993 return ENXIO;
994}
995
996static device_method_t isa_methods[] = {
997 /* Device interface */
998 DEVMETHOD(device_probe, isa_probe),
999 DEVMETHOD(device_attach, isa_attach),
1000 DEVMETHOD(device_detach, bus_generic_detach),
1001 DEVMETHOD(device_shutdown, bus_generic_shutdown),
1002 DEVMETHOD(device_suspend, bus_generic_suspend),
1003 DEVMETHOD(device_resume, bus_generic_resume),
1004
1005 /* Bus interface */
1006 DEVMETHOD(bus_add_child, isa_add_child),
1007 DEVMETHOD(bus_print_child, isa_print_child),
1008 DEVMETHOD(bus_probe_nomatch, isa_probe_nomatch),
1009 DEVMETHOD(bus_read_ivar, isa_read_ivar),
1010 DEVMETHOD(bus_write_ivar, isa_write_ivar),
1011 DEVMETHOD(bus_child_detached, isa_child_detached),
1012 DEVMETHOD(bus_driver_added, isa_driver_added),
1013 DEVMETHOD(bus_alloc_resource, isa_alloc_resource),
1014 DEVMETHOD(bus_release_resource, isa_release_resource),
1015 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
1016 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
1017 DEVMETHOD(bus_setup_intr, isa_setup_intr),
1018 DEVMETHOD(bus_teardown_intr, isa_teardown_intr),
1019 DEVMETHOD(bus_set_resource, isa_set_resource),
1020 DEVMETHOD(bus_get_resource, isa_get_resource),
1021 DEVMETHOD(bus_delete_resource, isa_delete_resource),
1022
1023 /* ISA interface */
1024 DEVMETHOD(isa_add_config, isa_add_config),
1025 DEVMETHOD(isa_set_config_callback, isa_set_config_callback),
1026 DEVMETHOD(isa_pnp_probe, isa_pnp_probe),
1027
1028 { 0, 0 }
1029};
1030
1031static driver_t isa_driver = {
1032 "isa",
1033 isa_methods,
1034 1, /* no softc */
1035};
1036
1037/*
1038 * ISA can be attached to a PCI-ISA bridge or directly to the nexus.
1039 */
1040DRIVER_MODULE(isa, isab, isa_driver, isa_devclass, 0, 0);
1041#ifdef __i386__
1042DRIVER_MODULE(isa, nexus, isa_driver, isa_devclass, 0, 0);
1043#endif
1044