FreeBSD/Linux Kernel Cross Reference
sys/isa/isa_common.c
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 /*
27 * Modifications for Intel architecture by Garrett A. Wollman.
28 * Copyright 1998 Massachusetts Institute of Technology
29 *
30 * Permission to use, copy, modify, and distribute this software and
31 * its documentation for any purpose and without fee is hereby
32 * granted, provided that both the above copyright notice and this
33 * permission notice appear in all copies, that both the above
34 * copyright notice and this permission notice appear in all
35 * supporting documentation, and that the name of M.I.T. not be used
36 * in advertising or publicity pertaining to distribution of the
37 * software without specific, written prior permission. M.I.T. makes
38 * no representations about the suitability of this software for any
39 * purpose. It is provided "as is" without express or implied
40 * warranty.
41 *
42 * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS
43 * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
44 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
45 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
46 * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
47 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
48 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
49 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
50 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
51 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
52 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * SUCH DAMAGE.
54 */
55
56 /*
57 * Parts of the ISA bus implementation common to all architectures.
58 */
59
60 #include <sys/cdefs.h>
61 __FBSDID("$FreeBSD: src/sys/isa/isa_common.c,v 1.49 2008/11/18 21:01:54 jhb Exp $");
62
63 #include "opt_isa.h"
64
65 #include <sys/param.h>
66 #include <sys/systm.h>
67 #include <sys/kernel.h>
68 #include <sys/bus.h>
69 #include <sys/malloc.h>
70 #include <sys/module.h>
71 #include <machine/bus.h>
72 #include <sys/rman.h>
73
74 #include <machine/resource.h>
75
76 #include <isa/isavar.h>
77 #include <isa/isa_common.h>
78
79 static int isa_print_child(device_t bus, device_t dev);
80
81 static MALLOC_DEFINE(M_ISADEV, "isadev", "ISA device");
82
83 static int isa_running;
84
85 /*
86 * At 'probe' time, we add all the devices which we know about to the
87 * bus. The generic attach routine will probe and attach them if they
88 * are alive.
89 */
90 static int
91 isa_probe(device_t dev)
92 {
93 device_set_desc(dev, "ISA bus");
94 isa_init(dev); /* Allow machdep code to initialise */
95 return (0);
96 }
97
98 extern device_t isa_bus_device;
99
100 static int
101 isa_attach(device_t dev)
102 {
103 /*
104 * Arrange for isa_probe_children(dev) to be called later. XXX
105 */
106 isa_bus_device = dev;
107 return (0);
108 }
109
110 /*
111 * Find a working set of memory regions for a child using the ranges
112 * in *config and return the regions in *result. Returns non-zero if
113 * a set of ranges was found.
114 */
115 static int
116 isa_find_memory(device_t child, 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 uint32_t start, end, size, align;
134
135 size = config->ic_mem[i].ir_size;
136
137 /* the PnP device may have a null resource as filler */
138 if (size == 0) {
139 result->ic_mem[i].ir_start = 0;
140 result->ic_mem[i].ir_end = 0;
141 result->ic_mem[i].ir_size = 0;
142 result->ic_mem[i].ir_align = 0;
143 continue;
144 }
145
146 for (start = config->ic_mem[i].ir_start,
147 end = config->ic_mem[i].ir_end,
148 align = config->ic_mem[i].ir_align;
149 start + size - 1 <= end && start + size > start;
150 start += MAX(align, 1)) {
151 bus_set_resource(child, SYS_RES_MEMORY, i,
152 start, size);
153 res[i] = bus_alloc_resource(child,
154 SYS_RES_MEMORY, &i, 0, ~0, 1,
155 rman_make_alignment_flags(align) /* !RF_ACTIVE */);
156 if (res[i]) {
157 result->ic_mem[i].ir_start = start;
158 result->ic_mem[i].ir_end = start + size - 1;
159 result->ic_mem[i].ir_size = size;
160 result->ic_mem[i].ir_align = align;
161 break;
162 }
163 }
164
165 /*
166 * If we didn't find a place for memory range i, then
167 * give up now.
168 */
169 if (!res[i]) {
170 success = 0;
171 break;
172 }
173 }
174
175 for (i = 0; i < ISA_NMEM; i++) {
176 if (res[i])
177 bus_release_resource(child, SYS_RES_MEMORY,
178 i, res[i]);
179 }
180
181 return (success);
182 }
183
184 /*
185 * Find a working set of port regions for a child using the ranges
186 * in *config and return the regions in *result. Returns non-zero if
187 * a set of ranges was found.
188 */
189 static int
190 isa_find_port(device_t child, struct isa_config *config,
191 struct isa_config *result)
192 {
193 int success, i;
194 struct resource *res[ISA_NPORT];
195
196 /*
197 * First clear out any existing resource definitions.
198 */
199 for (i = 0; i < ISA_NPORT; i++) {
200 bus_delete_resource(child, SYS_RES_IOPORT, i);
201 res[i] = NULL;
202 }
203
204 success = 1;
205 result->ic_nport = config->ic_nport;
206 for (i = 0; i < config->ic_nport; i++) {
207 uint32_t start, end, size, align;
208
209 size = config->ic_port[i].ir_size;
210
211 /* the PnP device may have a null resource as filler */
212 if (size == 0) {
213 result->ic_port[i].ir_start = 0;
214 result->ic_port[i].ir_end = 0;
215 result->ic_port[i].ir_size = 0;
216 result->ic_port[i].ir_align = 0;
217 continue;
218 }
219
220 for (start = config->ic_port[i].ir_start,
221 end = config->ic_port[i].ir_end,
222 align = config->ic_port[i].ir_align;
223 start + size - 1 <= end;
224 start += align) {
225 bus_set_resource(child, SYS_RES_IOPORT, i,
226 start, size);
227 res[i] = bus_alloc_resource(child,
228 SYS_RES_IOPORT, &i, 0, ~0, 1,
229 rman_make_alignment_flags(align) /* !RF_ACTIVE */);
230 if (res[i]) {
231 result->ic_port[i].ir_start = start;
232 result->ic_port[i].ir_end = start + size - 1;
233 result->ic_port[i].ir_size = size;
234 result->ic_port[i].ir_align = align;
235 break;
236 }
237 }
238
239 /*
240 * If we didn't find a place for port range i, then
241 * give up now.
242 */
243 if (!res[i]) {
244 success = 0;
245 break;
246 }
247 }
248
249 for (i = 0; i < ISA_NPORT; i++) {
250 if (res[i])
251 bus_release_resource(child, SYS_RES_IOPORT,
252 i, res[i]);
253 }
254
255 return success;
256 }
257
258 /*
259 * Return the index of the first bit in the mask (or -1 if mask is empty.
260 */
261 static int
262 find_first_bit(uint32_t mask)
263 {
264 return (ffs(mask) - 1);
265 }
266
267 /*
268 * Return the index of the next bit in the mask, or -1 if there are no more.
269 */
270 static int
271 find_next_bit(uint32_t mask, int bit)
272 {
273 bit++;
274 while (bit < 32 && !(mask & (1 << bit)))
275 bit++;
276 if (bit != 32)
277 return (bit);
278 return (-1);
279 }
280
281 /*
282 * Find a working set of irqs for a child using the masks in *config
283 * and return the regions in *result. Returns non-zero if a set of
284 * irqs was found.
285 */
286 static int
287 isa_find_irq(device_t child, struct isa_config *config,
288 struct isa_config *result)
289 {
290 int success, i;
291 struct resource *res[ISA_NIRQ];
292
293 /*
294 * First clear out any existing resource definitions.
295 */
296 for (i = 0; i < ISA_NIRQ; i++) {
297 bus_delete_resource(child, SYS_RES_IRQ, i);
298 res[i] = NULL;
299 }
300
301 success = 1;
302 result->ic_nirq = config->ic_nirq;
303 for (i = 0; i < config->ic_nirq; i++) {
304 uint32_t mask = config->ic_irqmask[i];
305 int irq;
306
307 /* the PnP device may have a null resource as filler */
308 if (mask == 0) {
309 result->ic_irqmask[i] = 0;
310 continue;
311 }
312
313 for (irq = find_first_bit(mask);
314 irq != -1;
315 irq = find_next_bit(mask, irq)) {
316 bus_set_resource(child, SYS_RES_IRQ, i,
317 irq, 1);
318 res[i] = bus_alloc_resource_any(child,
319 SYS_RES_IRQ, &i,
320 0 /* !RF_ACTIVE */ );
321 if (res[i]) {
322 result->ic_irqmask[i] = (1 << irq);
323 break;
324 }
325 }
326
327 /*
328 * If we didn't find a place for irq range i, then
329 * give up now.
330 */
331 if (!res[i]) {
332 success = 0;
333 break;
334 }
335 }
336
337 for (i = 0; i < ISA_NIRQ; i++) {
338 if (res[i])
339 bus_release_resource(child, SYS_RES_IRQ,
340 i, res[i]);
341 }
342
343 return (success);
344 }
345
346 /*
347 * Find a working set of drqs for a child using the masks in *config
348 * and return the regions in *result. Returns non-zero if a set of
349 * drqs was found.
350 */
351 static int
352 isa_find_drq(device_t child, struct isa_config *config,
353 struct isa_config *result)
354 {
355 int success, i;
356 struct resource *res[ISA_NDRQ];
357
358 /*
359 * First clear out any existing resource definitions.
360 */
361 for (i = 0; i < ISA_NDRQ; i++) {
362 bus_delete_resource(child, SYS_RES_DRQ, i);
363 res[i] = NULL;
364 }
365
366 success = 1;
367 result->ic_ndrq = config->ic_ndrq;
368 for (i = 0; i < config->ic_ndrq; i++) {
369 uint32_t mask = config->ic_drqmask[i];
370 int drq;
371
372 /* the PnP device may have a null resource as filler */
373 if (mask == 0) {
374 result->ic_drqmask[i] = 0;
375 continue;
376 }
377
378 for (drq = find_first_bit(mask);
379 drq != -1;
380 drq = find_next_bit(mask, drq)) {
381 bus_set_resource(child, SYS_RES_DRQ, i,
382 drq, 1);
383 res[i] = bus_alloc_resource_any(child,
384 SYS_RES_DRQ, &i,
385 0 /* !RF_ACTIVE */);
386 if (res[i]) {
387 result->ic_drqmask[i] = (1 << drq);
388 break;
389 }
390 }
391
392 /*
393 * If we didn't find a place for drq range i, then
394 * give up now.
395 */
396 if (!res[i]) {
397 success = 0;
398 break;
399 }
400 }
401
402 for (i = 0; i < ISA_NDRQ; i++) {
403 if (res[i])
404 bus_release_resource(child, SYS_RES_DRQ,
405 i, res[i]);
406 }
407
408 return (success);
409 }
410
411 /*
412 * Attempt to find a working set of resources for a device. Return
413 * non-zero if a working configuration is found.
414 */
415 static int
416 isa_assign_resources(device_t child)
417 {
418 struct isa_device *idev = DEVTOISA(child);
419 struct isa_config_entry *ice;
420 struct isa_config *cfg;
421 const char *reason;
422
423 reason = "Empty ISA id_configs";
424 cfg = malloc(sizeof(struct isa_config), M_TEMP, M_NOWAIT|M_ZERO);
425 if (cfg == NULL)
426 return(0);
427 TAILQ_FOREACH(ice, &idev->id_configs, ice_link) {
428 reason = "memory";
429 if (!isa_find_memory(child, &ice->ice_config, cfg))
430 continue;
431 reason = "port";
432 if (!isa_find_port(child, &ice->ice_config, cfg))
433 continue;
434 reason = "irq";
435 if (!isa_find_irq(child, &ice->ice_config, cfg))
436 continue;
437 reason = "drq";
438 if (!isa_find_drq(child, &ice->ice_config, cfg))
439 continue;
440
441 /*
442 * A working configuration was found enable the device
443 * with this configuration.
444 */
445 reason = "no callback";
446 if (idev->id_config_cb) {
447 idev->id_config_cb(idev->id_config_arg,
448 cfg, 1);
449 free(cfg, M_TEMP);
450 return (1);
451 }
452 }
453
454 /*
455 * Disable the device.
456 */
457 bus_print_child_header(device_get_parent(child), child);
458 printf(" can't assign resources (%s)\n", reason);
459 if (bootverbose)
460 isa_print_child(device_get_parent(child), child);
461 bzero(cfg, sizeof (*cfg));
462 if (idev->id_config_cb)
463 idev->id_config_cb(idev->id_config_arg, cfg, 0);
464 device_disable(child);
465
466 free(cfg, M_TEMP);
467 return (0);
468 }
469
470 /*
471 * Claim any unallocated resources to keep other devices from using
472 * them.
473 */
474 static void
475 isa_claim_resources(device_t dev, device_t child)
476 {
477 struct isa_device *idev = DEVTOISA(child);
478 struct resource_list *rl = &idev->id_resources;
479 struct resource_list_entry *rle;
480 int rid;
481
482 STAILQ_FOREACH(rle, rl, link) {
483 if (!rle->res) {
484 rid = rle->rid;
485 resource_list_alloc(rl, dev, child, rle->type, &rid,
486 0ul, ~0ul, 1, 0);
487 }
488 }
489 }
490
491 /*
492 * Called after other devices have initialised to probe for isa devices.
493 */
494 void
495 isa_probe_children(device_t dev)
496 {
497 struct isa_device *idev;
498 device_t *children, child;
499 struct isa_config *cfg;
500 int nchildren, i;
501
502 /*
503 * Create all the non-hinted children by calling drivers'
504 * identify methods.
505 */
506 bus_generic_probe(dev);
507
508 if (device_get_children(dev, &children, &nchildren))
509 return;
510
511 /*
512 * First disable all pnp devices so that they don't get
513 * matched by legacy probes.
514 */
515 if (bootverbose)
516 printf("isa_probe_children: disabling PnP devices\n");
517
518 cfg = malloc(sizeof(*cfg), M_TEMP, M_NOWAIT|M_ZERO);
519 if (cfg == NULL) {
520 free(children, M_TEMP);
521 return;
522 }
523
524 for (i = 0; i < nchildren; i++) {
525 idev = DEVTOISA(children[i]);
526
527 bzero(cfg, sizeof(*cfg));
528 if (idev->id_config_cb)
529 idev->id_config_cb(idev->id_config_arg, cfg, 0);
530 }
531
532 free(cfg, M_TEMP);
533
534 /*
535 * Next, probe all the PnP BIOS devices so they can subsume any
536 * hints.
537 */
538 for (i = 0; i < nchildren; i++) {
539 child = children[i];
540 idev = DEVTOISA(child);
541
542 if (idev->id_order > ISA_ORDER_PNPBIOS)
543 continue;
544 if (!TAILQ_EMPTY(&idev->id_configs) &&
545 !isa_assign_resources(child))
546 continue;
547
548 if (device_probe_and_attach(child) == 0)
549 isa_claim_resources(dev, child);
550 }
551 free(children, M_TEMP);
552
553 /*
554 * Next, enumerate hinted devices and probe all non-pnp devices so
555 * that they claim their resources first.
556 */
557 bus_enumerate_hinted_children(dev);
558 if (device_get_children(dev, &children, &nchildren))
559 return;
560 if (bootverbose)
561 printf("isa_probe_children: probing non-PnP devices\n");
562 for (i = 0; i < nchildren; i++) {
563 child = children[i];
564 idev = DEVTOISA(child);
565
566 if (device_is_attached(child) ||
567 !TAILQ_EMPTY(&idev->id_configs))
568 continue;
569
570 device_probe_and_attach(child);
571 }
572
573 /*
574 * Finally assign resource to pnp devices and probe them.
575 */
576 if (bootverbose)
577 printf("isa_probe_children: probing PnP devices\n");
578 for (i = 0; i < nchildren; i++) {
579 child = children[i];
580 idev = DEVTOISA(child);
581
582 if (device_is_attached(child) || TAILQ_EMPTY(&idev->id_configs))
583 continue;
584
585 if (isa_assign_resources(child)) {
586 device_probe_and_attach(child);
587 isa_claim_resources(dev, child);
588 }
589 }
590
591 free(children, M_TEMP);
592
593 isa_running = 1;
594 }
595
596 /*
597 * Add a new child with default ivars.
598 */
599 static device_t
600 isa_add_child(device_t dev, int order, const char *name, int unit)
601 {
602 device_t child;
603 struct isa_device *idev;
604
605 child = device_add_child_ordered(dev, order, name, unit);
606 if (child == NULL)
607 return (child);
608
609 idev = malloc(sizeof(struct isa_device), M_ISADEV, M_NOWAIT | M_ZERO);
610 if (!idev)
611 return (0);
612
613 resource_list_init(&idev->id_resources);
614 TAILQ_INIT(&idev->id_configs);
615 idev->id_order = order;
616
617 device_set_ivars(child, idev);
618
619 return (child);
620 }
621
622 static int
623 isa_print_all_resources(device_t dev)
624 {
625 struct isa_device *idev = DEVTOISA(dev);
626 struct resource_list *rl = &idev->id_resources;
627 int retval = 0;
628
629 if (STAILQ_FIRST(rl) || device_get_flags(dev))
630 retval += printf(" at");
631
632 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx");
633 retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx");
634 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
635 retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%ld");
636 if (device_get_flags(dev))
637 retval += printf(" flags %#x", device_get_flags(dev));
638 #ifdef ISAPNP
639 if (idev->id_vendorid)
640 retval += printf(" pnpid %s", pnp_eisaformat(idev->id_vendorid));
641 #endif
642
643 return (retval);
644 }
645
646 static int
647 isa_print_child(device_t bus, device_t dev)
648 {
649 int retval = 0;
650
651 retval += bus_print_child_header(bus, dev);
652 retval += isa_print_all_resources(dev);
653 retval += bus_print_child_footer(bus, dev);
654
655 return (retval);
656 }
657
658 static void
659 isa_probe_nomatch(device_t dev, device_t child)
660 {
661 if (bootverbose) {
662 bus_print_child_header(dev, child);
663 printf(" failed to probe");
664 isa_print_all_resources(child);
665 bus_print_child_footer(dev, child);
666 }
667
668 return;
669 }
670
671 static int
672 isa_read_ivar(device_t bus, device_t dev, int index, uintptr_t * result)
673 {
674 struct isa_device* idev = DEVTOISA(dev);
675 struct resource_list *rl = &idev->id_resources;
676 struct resource_list_entry *rle;
677
678 switch (index) {
679 case ISA_IVAR_PORT_0:
680 rle = resource_list_find(rl, SYS_RES_IOPORT, 0);
681 if (rle)
682 *result = rle->start;
683 else
684 *result = -1;
685 break;
686
687 case ISA_IVAR_PORT_1:
688 rle = resource_list_find(rl, SYS_RES_IOPORT, 1);
689 if (rle)
690 *result = rle->start;
691 else
692 *result = -1;
693 break;
694
695 case ISA_IVAR_PORTSIZE_0:
696 rle = resource_list_find(rl, SYS_RES_IOPORT, 0);
697 if (rle)
698 *result = rle->count;
699 else
700 *result = 0;
701 break;
702
703 case ISA_IVAR_PORTSIZE_1:
704 rle = resource_list_find(rl, SYS_RES_IOPORT, 1);
705 if (rle)
706 *result = rle->count;
707 else
708 *result = 0;
709 break;
710
711 case ISA_IVAR_MADDR_0:
712 rle = resource_list_find(rl, SYS_RES_MEMORY, 0);
713 if (rle)
714 *result = rle->start;
715 else
716 *result = -1;
717 break;
718
719 case ISA_IVAR_MADDR_1:
720 rle = resource_list_find(rl, SYS_RES_MEMORY, 1);
721 if (rle)
722 *result = rle->start;
723 else
724 *result = -1;
725 break;
726
727 case ISA_IVAR_MEMSIZE_0:
728 rle = resource_list_find(rl, SYS_RES_MEMORY, 0);
729 if (rle)
730 *result = rle->count;
731 else
732 *result = 0;
733 break;
734
735 case ISA_IVAR_MEMSIZE_1:
736 rle = resource_list_find(rl, SYS_RES_MEMORY, 1);
737 if (rle)
738 *result = rle->count;
739 else
740 *result = 0;
741 break;
742
743 case ISA_IVAR_IRQ_0:
744 rle = resource_list_find(rl, SYS_RES_IRQ, 0);
745 if (rle)
746 *result = rle->start;
747 else
748 *result = -1;
749 break;
750
751 case ISA_IVAR_IRQ_1:
752 rle = resource_list_find(rl, SYS_RES_IRQ, 1);
753 if (rle)
754 *result = rle->start;
755 else
756 *result = -1;
757 break;
758
759 case ISA_IVAR_DRQ_0:
760 rle = resource_list_find(rl, SYS_RES_DRQ, 0);
761 if (rle)
762 *result = rle->start;
763 else
764 *result = -1;
765 break;
766
767 case ISA_IVAR_DRQ_1:
768 rle = resource_list_find(rl, SYS_RES_DRQ, 1);
769 if (rle)
770 *result = rle->start;
771 else
772 *result = -1;
773 break;
774
775 case ISA_IVAR_VENDORID:
776 *result = idev->id_vendorid;
777 break;
778
779 case ISA_IVAR_SERIAL:
780 *result = idev->id_serial;
781 break;
782
783 case ISA_IVAR_LOGICALID:
784 *result = idev->id_logicalid;
785 break;
786
787 case ISA_IVAR_COMPATID:
788 *result = idev->id_compatid;
789 break;
790
791 case ISA_IVAR_CONFIGATTR:
792 *result = idev->id_config_attr;
793 break;
794
795 case ISA_IVAR_PNP_CSN:
796 *result = idev->id_pnp_csn;
797 break;
798
799 case ISA_IVAR_PNP_LDN:
800 *result = idev->id_pnp_ldn;
801 break;
802
803 case ISA_IVAR_PNPBIOS_HANDLE:
804 *result = idev->id_pnpbios_handle;
805 break;
806
807 default:
808 return (ENOENT);
809 }
810
811 return (0);
812 }
813
814 static int
815 isa_write_ivar(device_t bus, device_t dev, int index, uintptr_t value)
816 {
817 struct isa_device* idev = DEVTOISA(dev);
818
819 switch (index) {
820 case ISA_IVAR_PORT_0:
821 case ISA_IVAR_PORT_1:
822 case ISA_IVAR_PORTSIZE_0:
823 case ISA_IVAR_PORTSIZE_1:
824 case ISA_IVAR_MADDR_0:
825 case ISA_IVAR_MADDR_1:
826 case ISA_IVAR_MEMSIZE_0:
827 case ISA_IVAR_MEMSIZE_1:
828 case ISA_IVAR_IRQ_0:
829 case ISA_IVAR_IRQ_1:
830 case ISA_IVAR_DRQ_0:
831 case ISA_IVAR_DRQ_1:
832 return (EINVAL);
833
834 case ISA_IVAR_VENDORID:
835 idev->id_vendorid = value;
836 break;
837
838 case ISA_IVAR_SERIAL:
839 idev->id_serial = value;
840 break;
841
842 case ISA_IVAR_LOGICALID:
843 idev->id_logicalid = value;
844 break;
845
846 case ISA_IVAR_COMPATID:
847 idev->id_compatid = value;
848 break;
849
850 case ISA_IVAR_CONFIGATTR:
851 idev->id_config_attr = value;
852 break;
853
854 default:
855 return (ENOENT);
856 }
857
858 return (0);
859 }
860
861 /*
862 * Free any resources which the driver missed or which we were holding for
863 * it (see isa_probe_children).
864 */
865 static void
866 isa_child_detached(device_t dev, device_t child)
867 {
868 struct isa_device* idev = DEVTOISA(child);
869
870 if (TAILQ_FIRST(&idev->id_configs))
871 isa_claim_resources(dev, child);
872 }
873
874 static void
875 isa_driver_added(device_t dev, driver_t *driver)
876 {
877 device_t *children;
878 int nchildren, i;
879
880 /*
881 * Don't do anything if drivers are dynamically
882 * added during autoconfiguration (cf. ymf724).
883 * since that would end up calling identify
884 * twice.
885 */
886 if (!isa_running)
887 return;
888
889 DEVICE_IDENTIFY(driver, dev);
890 if (device_get_children(dev, &children, &nchildren))
891 return;
892
893 for (i = 0; i < nchildren; i++) {
894 device_t child = children[i];
895 struct isa_device *idev = DEVTOISA(child);
896 struct resource_list *rl = &idev->id_resources;
897 struct resource_list_entry *rle;
898
899 if (device_get_state(child) != DS_NOTPRESENT)
900 continue;
901 if (!device_is_enabled(child))
902 continue;
903
904 /*
905 * Free resources which we were holding on behalf of
906 * the device.
907 */
908 STAILQ_FOREACH(rle, &idev->id_resources, link) {
909 if (rle->res)
910 resource_list_release(rl, dev, child,
911 rle->type,
912 rle->rid,
913 rle->res);
914 }
915
916 if (TAILQ_FIRST(&idev->id_configs))
917 if (!isa_assign_resources(child))
918 continue;
919
920 device_probe_and_attach(child);
921
922 if (TAILQ_FIRST(&idev->id_configs))
923 isa_claim_resources(dev, child);
924 }
925
926 free(children, M_TEMP);
927 }
928
929 static int
930 isa_set_resource(device_t dev, device_t child, int type, int rid,
931 u_long start, u_long count)
932 {
933 struct isa_device* idev = DEVTOISA(child);
934 struct resource_list *rl = &idev->id_resources;
935
936 if (type != SYS_RES_IOPORT && type != SYS_RES_MEMORY
937 && type != SYS_RES_IRQ && type != SYS_RES_DRQ)
938 return (EINVAL);
939 if (rid < 0)
940 return (EINVAL);
941 if (type == SYS_RES_IOPORT && rid >= ISA_NPORT)
942 return (EINVAL);
943 if (type == SYS_RES_MEMORY && rid >= ISA_NMEM)
944 return (EINVAL);
945 if (type == SYS_RES_IRQ && rid >= ISA_NIRQ)
946 return (EINVAL);
947 if (type == SYS_RES_DRQ && rid >= ISA_NDRQ)
948 return (EINVAL);
949
950 resource_list_add(rl, type, rid, start, start + count - 1, count);
951
952 return (0);
953 }
954
955 static struct resource_list *
956 isa_get_resource_list (device_t dev, device_t child)
957 {
958 struct isa_device* idev = DEVTOISA(child);
959 struct resource_list *rl = &idev->id_resources;
960
961 if (!rl)
962 return (NULL);
963
964 return (rl);
965 }
966
967 static int
968 isa_add_config(device_t dev, device_t child, int priority,
969 struct isa_config *config)
970 {
971 struct isa_device* idev = DEVTOISA(child);
972 struct isa_config_entry *newice, *ice;
973
974 newice = malloc(sizeof *ice, M_DEVBUF, M_NOWAIT);
975 if (!newice)
976 return (ENOMEM);
977
978 newice->ice_priority = priority;
979 newice->ice_config = *config;
980
981 TAILQ_FOREACH(ice, &idev->id_configs, ice_link) {
982 if (ice->ice_priority > priority)
983 break;
984 }
985 if (ice)
986 TAILQ_INSERT_BEFORE(ice, newice, ice_link);
987 else
988 TAILQ_INSERT_TAIL(&idev->id_configs, newice, ice_link);
989
990 return (0);
991 }
992
993 static void
994 isa_set_config_callback(device_t dev, device_t child, isa_config_cb *fn,
995 void *arg)
996 {
997 struct isa_device* idev = DEVTOISA(child);
998
999 idev->id_config_cb = fn;
1000 idev->id_config_arg = arg;
1001 }
1002
1003 static int
1004 isa_pnp_probe(device_t dev, device_t child, struct isa_pnp_id *ids)
1005 {
1006 struct isa_device* idev = DEVTOISA(child);
1007
1008 if (!idev->id_vendorid)
1009 return (ENOENT);
1010
1011 while (ids && ids->ip_id) {
1012 /*
1013 * Really ought to support >1 compat id per device.
1014 */
1015 if (idev->id_logicalid == ids->ip_id
1016 || idev->id_compatid == ids->ip_id) {
1017 if (ids->ip_desc)
1018 device_set_desc(child, ids->ip_desc);
1019 return (0);
1020 }
1021 ids++;
1022 }
1023
1024 return (ENXIO);
1025 }
1026
1027 static int
1028 isa_child_pnpinfo_str(device_t bus, device_t child, char *buf,
1029 size_t buflen)
1030 {
1031 #ifdef ISAPNP
1032 struct isa_device *idev = DEVTOISA(child);
1033
1034 if (idev->id_vendorid)
1035 snprintf(buf, buflen, "pnpid=%s",
1036 pnp_eisaformat(idev->id_vendorid));
1037 #endif
1038 return (0);
1039 }
1040
1041 static int
1042 isa_child_location_str(device_t bus, device_t child, char *buf,
1043 size_t buflen)
1044 {
1045 #if 0
1046 /* id_pnphandle isn't there yet */
1047 struct isa_device *idev = DEVTOISA(child);
1048
1049 if (idev->id_vendorid)
1050 snprintf(buf, buflen, < |