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BUS_CONFIG_INTR takes 2 devices now: parent and child
[dragonfly.git] / sys / dev / acpica5 / acpi_resource.c
bloba4d9096623430c2963ed8b828b9c1e5f6f33b2a4
1 /*-
2 * Copyright (c) 2000 Michael Smith
3 * Copyright (c) 2000 BSDi
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 * __FBSDID("$FreeBSD: src/sys/dev/acpica/acpi_resource.c,v 1.40.8.1 2009/04/15 03:14:26 kensmith Exp $");
27 */
28
29 #include <sys/cdefs.h>
30
31 #include "opt_acpi.h"
32 #include <sys/param.h>
33 #include <sys/kernel.h>
34 #include <sys/bus.h>
35 #include <sys/malloc.h>
36 #include <sys/module.h>
37 #include <sys/resource.h>
38
39 #include <sys/rman.h>
40
41 #include "acpi.h"
42 #include <dev/acpica5/acpivar.h>
43
44 /* Hooks for the ACPI CA debugging infrastructure */
45 #define _COMPONENT ACPI_BUS
46 ACPI_MODULE_NAME("RESOURCE")
47
48 struct lookup_irq_request {
49 ACPI_RESOURCE *acpi_res;
50 struct resource *res;
51 int counter;
52 int rid;
53 int found;
54 };
55
56 static ACPI_STATUS
57 acpi_lookup_irq_handler(ACPI_RESOURCE *res, void *context)
58 {
59 struct lookup_irq_request *req;
60 u_int irqnum, irq;
61
62 switch (res->Type) {
63 case ACPI_RESOURCE_TYPE_IRQ:
64 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
65 if (res->Type == ACPI_RESOURCE_TYPE_IRQ) {
66 irqnum = res->Data.Irq.InterruptCount;
67 irq = res->Data.Irq.Interrupts[0];
68 } else {
69 irqnum = res->Data.ExtendedIrq.InterruptCount;
70 irq = res->Data.ExtendedIrq.Interrupts[0];
71 }
72 if (irqnum != 1)
73 break;
74 req = (struct lookup_irq_request *)context;
75 if (req->counter != req->rid) {
76 req->counter++;
77 break;
78 }
79 req->found = 1;
80 KASSERT(irq == rman_get_start(req->res),
81 ("IRQ resources do not match"));
82 bcopy(res, req->acpi_res, sizeof(ACPI_RESOURCE));
83 return (AE_CTRL_TERMINATE);
84 }
85 return (AE_OK);
86 }
87
88 ACPI_STATUS
89 acpi_lookup_irq_resource(device_t dev, int rid, struct resource *res,
90 ACPI_RESOURCE *acpi_res)
91 {
92 struct lookup_irq_request req;
93 ACPI_STATUS status;
94
95 req.acpi_res = acpi_res;
96 req.res = res;
97 req.counter = 0;
98 req.rid = rid;
99 req.found = 0;
100 status = AcpiWalkResources(acpi_get_handle(dev), "_CRS",
101 acpi_lookup_irq_handler, &req);
102 if (ACPI_SUCCESS(status) && req.found == 0)
103 status = AE_NOT_FOUND;
104 return (status);
105 }
106
107 void
108 acpi_config_intr(device_t dev, ACPI_RESOURCE *res)
109 {
110 u_int irq;
111 int pol, trig;
112 switch (res->Type) {
113 case ACPI_RESOURCE_TYPE_IRQ:
114 KASSERT(res->Data.Irq.InterruptCount == 1,
115 ("%s: multiple interrupts", __func__));
116 irq = res->Data.Irq.Interrupts[0];
117 trig = res->Data.Irq.Triggering;
118 pol = res->Data.Irq.Polarity;
119 break;
120 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
121 KASSERT(res->Data.ExtendedIrq.InterruptCount == 1,
122 ("%s: multiple interrupts", __func__));
123 irq = res->Data.ExtendedIrq.Interrupts[0];
124 trig = res->Data.ExtendedIrq.Triggering;
125 pol = res->Data.ExtendedIrq.Polarity;
126 break;
127 default:
128 panic("%s: bad resource type %u", __func__, res->Type);
129 }
130 BUS_CONFIG_INTR(dev, dev, irq, (trig == ACPI_EDGE_SENSITIVE) ?
131 INTR_TRIGGER_EDGE : INTR_TRIGGER_LEVEL, (pol == ACPI_ACTIVE_HIGH) ?
132 INTR_POLARITY_HIGH : INTR_POLARITY_LOW);
133 }
134
135 /*
136 * Fetch a device's resources and associate them with the device.
137 *
138 * Note that it might be nice to also locate ACPI-specific resource items, such
139 * as GPE bits.
140 *
141 * We really need to split the resource-fetching code out from the
142 * resource-parsing code, since we may want to use the parsing
143 * code for _PRS someday.
144 */
145 ACPI_STATUS
146 acpi_parse_resources(device_t dev, ACPI_HANDLE handle,
147 struct acpi_parse_resource_set *set, void *arg)
148 {
149 ACPI_BUFFER buf;
150 ACPI_RESOURCE *res;
151 char *curr, *last;
152 ACPI_STATUS status;
153 void *context;
154
155 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
156
157 /*
158 * Special-case some devices that abuse _PRS/_CRS to mean
159 * something other than "I consume this resource".
160 *
161 * XXX do we really need this? It's only relevant once
162 * we start always-allocating these resources, and even
163 * then, the only special-cased device is likely to be
164 * the PCI interrupt link.
165 */
166
167 /* Fetch the device's current resources. */
168 buf.Length = ACPI_ALLOCATE_BUFFER;
169 if (ACPI_FAILURE((status = AcpiGetCurrentResources(handle, &buf)))) {
170 if (status != AE_NOT_FOUND && status != AE_TYPE)
171 kprintf("can't fetch resources for %s - %s\n",
172 acpi_name(handle), AcpiFormatException(status));
173 return_ACPI_STATUS (status);
174 }
175 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "%s - got %ld bytes of resources\n",
176 acpi_name(handle), (long)buf.Length));
177 set->set_init(dev, arg, &context);
178
179 /* Iterate through the resources */
180 curr = buf.Pointer;
181 last = (char *)buf.Pointer + buf.Length;
182 while (curr < last) {
183 res = (ACPI_RESOURCE *)curr;
184 curr += res->Length;
185
186 /* Handle the individual resource types */
187 switch(res->Type) {
188 case ACPI_RESOURCE_TYPE_END_TAG:
189 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "EndTag\n"));
190 curr = last;
191 break;
192 case ACPI_RESOURCE_TYPE_FIXED_IO:
193 if (res->Data.FixedIo.AddressLength <= 0)
194 break;
195 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "FixedIo 0x%x/%d\n",
196 res->Data.FixedIo.Address,
197 res->Data.FixedIo.AddressLength));
198 set->set_ioport(dev, context,
199 res->Data.FixedIo.Address,
200 res->Data.FixedIo.AddressLength);
201 break;
202 case ACPI_RESOURCE_TYPE_IO:
203 if (res->Data.Io.AddressLength <= 0)
204 break;
205 if (res->Data.Io.Minimum == res->Data.Io.Maximum) {
206 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Io 0x%x/%d\n",
207 res->Data.Io.Minimum,
208 res->Data.Io.AddressLength));
209 set->set_ioport(dev, context,
210 res->Data.Io.Minimum,
211 res->Data.Io.AddressLength);
212 } else {
213 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Io 0x%x-0x%x/%d\n",
214 res->Data.Io.Minimum,
215 res->Data.Io.Maximum,
216 res->Data.Io.AddressLength));
217 set->set_iorange(dev, context,
218 res->Data.Io.Minimum,
219 res->Data.Io.Maximum,
220 res->Data.Io.AddressLength,
221 res->Data.Io.Alignment);
222 }
223 break;
224 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
225 if (res->Data.FixedMemory32.AddressLength <= 0)
226 break;
227 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "FixedMemory32 0x%x/%d\n",
228 res->Data.FixedMemory32.Address,
229 res->Data.FixedMemory32.AddressLength));
230 set->set_memory(dev, context,
231 res->Data.FixedMemory32.Address,
232 res->Data.FixedMemory32.AddressLength);
233 break;
234 case ACPI_RESOURCE_TYPE_MEMORY32:
235 if (res->Data.Memory32.AddressLength <= 0)
236 break;
237 if (res->Data.Memory32.Minimum ==
238 res->Data.Memory32.Maximum) {
239
240 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Memory32 0x%x/%d\n",
241 res->Data.Memory32.Minimum,
242 res->Data.Memory32.AddressLength));
243 set->set_memory(dev, context,
244 res->Data.Memory32.Minimum,
245 res->Data.Memory32.AddressLength);
246 } else {
247 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Memory32 0x%x-0x%x/%d\n",
248 res->Data.Memory32.Minimum,
249 res->Data.Memory32.Maximum,
250 res->Data.Memory32.AddressLength));
251 set->set_memoryrange(dev, context,
252 res->Data.Memory32.Minimum,
253 res->Data.Memory32.Maximum,
254 res->Data.Memory32.AddressLength,
255 res->Data.Memory32.Alignment);
256 }
257 break;
258 case ACPI_RESOURCE_TYPE_MEMORY24:
259 if (res->Data.Memory24.AddressLength <= 0)
260 break;
261 if (res->Data.Memory24.Minimum ==
262 res->Data.Memory24.Maximum) {
263
264 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Memory24 0x%x/%d\n",
265 res->Data.Memory24.Minimum,
266 res->Data.Memory24.AddressLength));
267 set->set_memory(dev, context, res->Data.Memory24.Minimum,
268 res->Data.Memory24.AddressLength);
269 } else {
270 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Memory24 0x%x-0x%x/%d\n",
271 res->Data.Memory24.Minimum,
272 res->Data.Memory24.Maximum,
273 res->Data.Memory24.AddressLength));
274 set->set_memoryrange(dev, context,
275 res->Data.Memory24.Minimum,
276 res->Data.Memory24.Maximum,
277 res->Data.Memory24.AddressLength,
278 res->Data.Memory24.Alignment);
279 }
280 break;
281 case ACPI_RESOURCE_TYPE_IRQ:
282 /*
283 * from 1.0b 6.4.2
284 * "This structure is repeated for each separate interrupt
285 * required"
286 */
287 set->set_irq(dev, context, res->Data.Irq.Interrupts,
288 res->Data.Irq.InterruptCount, res->Data.Irq.Triggering,
289 res->Data.Irq.Polarity);
290 break;
291 case ACPI_RESOURCE_TYPE_DMA:
292 /*
293 * from 1.0b 6.4.3
294 * "This structure is repeated for each separate dma channel
295 * required"
296 */
297 set->set_drq(dev, context, res->Data.Dma.Channels,
298 res->Data.Dma.ChannelCount);
299 break;
300 case ACPI_RESOURCE_TYPE_START_DEPENDENT:
301 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "start dependent functions\n"));
302 set->set_start_dependent(dev, context,
303 res->Data.StartDpf.CompatibilityPriority);
304 break;
305 case ACPI_RESOURCE_TYPE_END_DEPENDENT:
306 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "end dependent functions\n"));
307 set->set_end_dependent(dev, context);
308 break;
309 case ACPI_RESOURCE_TYPE_ADDRESS32:
310 if (res->Data.Address32.AddressLength <= 0)
311 break;
312 if (res->Data.Address32.ProducerConsumer != ACPI_CONSUMER) {
313 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
314 "ignored Address32 %s producer\n",
315 res->Data.Address32.ResourceType == ACPI_IO_RANGE ?
316 "IO" : "Memory"));
317 break;
318 }
319 if (res->Data.Address32.ResourceType != ACPI_MEMORY_RANGE &&
320 res->Data.Address32.ResourceType != ACPI_IO_RANGE) {
321 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
322 "ignored Address32 for non-memory, non-I/O\n"));
323 break;
324 }
325
326 if (res->Data.Address32.MinAddressFixed == ACPI_ADDRESS_FIXED &&
327 res->Data.Address32.MaxAddressFixed == ACPI_ADDRESS_FIXED) {
328
329 if (res->Data.Address32.ResourceType == ACPI_MEMORY_RANGE) {
330 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
331 "Address32/Memory 0x%x/%d\n",
332 res->Data.Address32.Minimum,
333 res->Data.Address32.AddressLength));
334 set->set_memory(dev, context,
335 res->Data.Address32.Minimum,
336 res->Data.Address32.AddressLength);
337 } else {
338 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
339 "Address32/IO 0x%x/%d\n",
340 res->Data.Address32.Minimum,
341 res->Data.Address32.AddressLength));
342 set->set_ioport(dev, context,
343 res->Data.Address32.Minimum,
344 res->Data.Address32.AddressLength);
345 }
346 } else {
347 if (res->Data.Address32.ResourceType == ACPI_MEMORY_RANGE) {
348 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
349 "Address32/Memory 0x%x-0x%x/%d\n",
350 res->Data.Address32.Minimum,
351 res->Data.Address32.Maximum,
352 res->Data.Address32.AddressLength));
353 set->set_memoryrange(dev, context,
354 res->Data.Address32.Minimum,
355 res->Data.Address32.Maximum,
356 res->Data.Address32.AddressLength,
357 res->Data.Address32.Granularity);
358 } else {
359 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
360 "Address32/IO 0x%x-0x%x/%d\n",
361 res->Data.Address32.Minimum,
362 res->Data.Address32.Maximum,
363 res->Data.Address32.AddressLength));
364 set->set_iorange(dev, context,
365 res->Data.Address32.Minimum,
366 res->Data.Address32.Maximum,
367 res->Data.Address32.AddressLength,
368 res->Data.Address32.Granularity);
369 }
370 }
371 break;
372 case ACPI_RESOURCE_TYPE_ADDRESS16:
373 if (res->Data.Address16.AddressLength <= 0)
374 break;
375 if (res->Data.Address16.ProducerConsumer != ACPI_CONSUMER) {
376 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
377 "ignored Address16 %s producer\n",
378 res->Data.Address16.ResourceType == ACPI_IO_RANGE ?
379 "IO" : "Memory"));
380 break;
381 }
382 if (res->Data.Address16.ResourceType != ACPI_MEMORY_RANGE &&
383 res->Data.Address16.ResourceType != ACPI_IO_RANGE) {
384 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
385 "ignored Address16 for non-memory, non-I/O\n"));
386 break;
387 }
388
389 if (res->Data.Address16.MinAddressFixed == ACPI_ADDRESS_FIXED &&
390 res->Data.Address16.MaxAddressFixed == ACPI_ADDRESS_FIXED) {
391
392 if (res->Data.Address16.ResourceType == ACPI_MEMORY_RANGE) {
393 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
394 "Address16/Memory 0x%x/%d\n",
395 res->Data.Address16.Minimum,
396 res->Data.Address16.AddressLength));
397 set->set_memory(dev, context,
398 res->Data.Address16.Minimum,
399 res->Data.Address16.AddressLength);
400 } else {
401 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
402 "Address16/IO 0x%x/%d\n",
403 res->Data.Address16.Minimum,
404 res->Data.Address16.AddressLength));
405 set->set_ioport(dev, context,
406 res->Data.Address16.Minimum,
407 res->Data.Address16.AddressLength);
408 }
409 } else {
410 if (res->Data.Address16.ResourceType == ACPI_MEMORY_RANGE) {
411 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
412 "Address16/Memory 0x%x-0x%x/%d\n",
413 res->Data.Address16.Minimum,
414 res->Data.Address16.Maximum,
415 res->Data.Address16.AddressLength));
416 set->set_memoryrange(dev, context,
417 res->Data.Address16.Minimum,
418 res->Data.Address16.Maximum,
419 res->Data.Address16.AddressLength,
420 res->Data.Address16.Granularity);
421 } else {
422 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
423 "Address16/IO 0x%x-0x%x/%d\n",
424 res->Data.Address16.Minimum,
425 res->Data.Address16.Maximum,
426 res->Data.Address16.AddressLength));
427 set->set_iorange(dev, context,
428 res->Data.Address16.Minimum,
429 res->Data.Address16.Maximum,
430 res->Data.Address16.AddressLength,
431 res->Data.Address16.Granularity);
432 }
433 }
434 break;
435 case ACPI_RESOURCE_TYPE_ADDRESS64:
436 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
437 "unimplemented Address64 resource\n"));
438 break;
439 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
440 if (res->Data.ExtendedIrq.ProducerConsumer != ACPI_CONSUMER) {
441 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
442 "ignored ExtIRQ producer\n"));
443 break;
444 }
445 set->set_ext_irq(dev, context, res->Data.ExtendedIrq.Interrupts,
446 res->Data.ExtendedIrq.InterruptCount,
447 res->Data.ExtendedIrq.Triggering,
448 res->Data.ExtendedIrq.Polarity);
449 break;
450 case ACPI_RESOURCE_TYPE_VENDOR:
451 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
452 "unimplemented VendorSpecific resource\n"));
453 break;
454 default:
455 break;
456 }
457 }
458
459 AcpiOsFree(buf.Pointer);
460 set->set_done(dev, context);
461 return_ACPI_STATUS (AE_OK);
462 }
463
464 /*
465 * Resource-set vectors used to attach _CRS-derived resources
466 * to an ACPI device.
467 */
468 static void acpi_res_set_init(device_t dev, void *arg, void **context);
469 static void acpi_res_set_done(device_t dev, void *context);
470 static void acpi_res_set_ioport(device_t dev, void *context,
471 u_int32_t base, u_int32_t length);
472 static void acpi_res_set_iorange(device_t dev, void *context,
473 u_int32_t low, u_int32_t high,
474 u_int32_t length, u_int32_t align);
475 static void acpi_res_set_memory(device_t dev, void *context,
476 u_int32_t base, u_int32_t length);
477 static void acpi_res_set_memoryrange(device_t dev, void *context,
478 u_int32_t low, u_int32_t high,
479 u_int32_t length, u_int32_t align);
480 static void acpi_res_set_irq(device_t dev, void *context, u_int8_t *irq,
481 int count, int trig, int pol);
482 static void acpi_res_set_ext_irq(device_t dev, void *context,
483 u_int32_t *irq, int count, int trig, int pol);
484 static void acpi_res_set_drq(device_t dev, void *context, u_int8_t *drq,
485 int count);
486 static void acpi_res_set_start_dependent(device_t dev, void *context,
487 int preference);
488 static void acpi_res_set_end_dependent(device_t dev, void *context);
489
490 struct acpi_parse_resource_set acpi_res_parse_set = {
491 acpi_res_set_init,
492 acpi_res_set_done,
493 acpi_res_set_ioport,
494 acpi_res_set_iorange,
495 acpi_res_set_memory,
496 acpi_res_set_memoryrange,
497 acpi_res_set_irq,
498 acpi_res_set_ext_irq,
499 acpi_res_set_drq,
500 acpi_res_set_start_dependent,
501 acpi_res_set_end_dependent
502 };
503
504 struct acpi_res_context {
505 int ar_nio;
506 int ar_nmem;
507 int ar_nirq;
508 int ar_ndrq;
509 void *ar_parent;
510 };
511
512 static void
513 acpi_res_set_init(device_t dev, void *arg, void **context)
514 {
515 struct acpi_res_context *cp;
516
517 if ((cp = AcpiOsAllocate(sizeof(*cp))) != NULL) {
518 bzero(cp, sizeof(*cp));
519 cp->ar_parent = arg;
520 *context = cp;
521 }
522 }
523
524 static void
525 acpi_res_set_done(device_t dev, void *context)
526 {
527 struct acpi_res_context *cp = (struct acpi_res_context *)context;
528
529 if (cp == NULL)
530 return;
531 AcpiOsFree(cp);
532 }
533
534 static void
535 acpi_res_set_ioport(device_t dev, void *context, u_int32_t base,
536 u_int32_t length)
537 {
538 struct acpi_res_context *cp = (struct acpi_res_context *)context;
539
540 if (cp == NULL)
541 return;
542 bus_set_resource(dev, SYS_RES_IOPORT, cp->ar_nio++, base, length);
543 }
544
545 static void
546 acpi_res_set_iorange(device_t dev, void *context, u_int32_t low,
547 u_int32_t high, u_int32_t length, u_int32_t align)
548 {
549 struct acpi_res_context *cp = (struct acpi_res_context *)context;
550
551 if (cp == NULL)
552 return;
553 device_printf(dev, "I/O range not supported\n");
554 }
555
556 static void
557 acpi_res_set_memory(device_t dev, void *context, u_int32_t base,
558 u_int32_t length)
559 {
560 struct acpi_res_context *cp = (struct acpi_res_context *)context;
561
562 if (cp == NULL)
563 return;
564
565 bus_set_resource(dev, SYS_RES_MEMORY, cp->ar_nmem++, base, length);
566 }
567
568 static void
569 acpi_res_set_memoryrange(device_t dev, void *context, u_int32_t low,
570 u_int32_t high, u_int32_t length, u_int32_t align)
571 {
572 struct acpi_res_context *cp = (struct acpi_res_context *)context;
573
574 if (cp == NULL)
575 return;
576 device_printf(dev, "memory range not supported\n");
577 }
578
579 static void
580 acpi_res_set_irq(device_t dev, void *context, u_int8_t *irq, int count,
581 int trig, int pol)
582 {
583 struct acpi_res_context *cp = (struct acpi_res_context *)context;
584
585 if (cp == NULL || irq == NULL)
586 return;
587
588 /* This implements no resource relocation. */
589 if (count != 1)
590 return;
591
592 bus_set_resource(dev, SYS_RES_IRQ, cp->ar_nirq++, *irq, 1);
593 }
594
595 static void
596 acpi_res_set_ext_irq(device_t dev, void *context, u_int32_t *irq, int count,
597 int trig, int pol)
598 {
599 struct acpi_res_context *cp = (struct acpi_res_context *)context;
600
601 if (cp == NULL || irq == NULL)
602 return;
603
604 /* This implements no resource relocation. */
605 if (count != 1)
606 return;
607
608 bus_set_resource(dev, SYS_RES_IRQ, cp->ar_nirq++, *irq, 1);
609 }
610
611 static void
612 acpi_res_set_drq(device_t dev, void *context, u_int8_t *drq, int count)
613 {
614 struct acpi_res_context *cp = (struct acpi_res_context *)context;
615
616 if (cp == NULL || drq == NULL)
617 return;
618
619 /* This implements no resource relocation. */
620 if (count != 1)
621 return;
622
623 bus_set_resource(dev, SYS_RES_DRQ, cp->ar_ndrq++, *drq, 1);
624 }
625
626 static void
627 acpi_res_set_start_dependent(device_t dev, void *context, int preference)
628 {
629 struct acpi_res_context *cp = (struct acpi_res_context *)context;
630
631 if (cp == NULL)
632 return;
633 device_printf(dev, "dependent functions not supported\n");
634 }
635
636 static void
637 acpi_res_set_end_dependent(device_t dev, void *context)
638 {
639 struct acpi_res_context *cp = (struct acpi_res_context *)context;
640
641 if (cp == NULL)
642 return;
643 device_printf(dev, "dependent functions not supported\n");
644 }
645
646 /*
647 * Resource-owning placeholders for IO and memory pseudo-devices.
648 *
649 * This code allocates system resources that will be used by ACPI
650 * child devices. The acpi parent manages these resources through a
651 * private rman.
652 */
653
654 static int acpi_sysres_rid = 100;
655
656 static int acpi_sysres_probe(device_t dev);
657 static int acpi_sysres_attach(device_t dev);
658
659 static device_method_t acpi_sysres_methods[] = {
660 /* Device interface */
661 DEVMETHOD(device_probe, acpi_sysres_probe),
662 DEVMETHOD(device_attach, acpi_sysres_attach),
663
664 {0, 0}
665 };
666
667 static driver_t acpi_sysres_driver = {
668 "acpi_sysresource",
669 acpi_sysres_methods,
670 0,
671 };
672
673 static devclass_t acpi_sysres_devclass;
674 DRIVER_MODULE(acpi_sysresource, acpi, acpi_sysres_driver, acpi_sysres_devclass,
675 0, 0);
676 MODULE_DEPEND(acpi_sysresource, acpi, 1, 1, 1);
677
678 static int
679 acpi_sysres_probe(device_t dev)
680 {
681 static char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL };
682
683 if (acpi_disabled("sysresource") ||
684 ACPI_ID_PROBE(device_get_parent(dev), dev, sysres_ids) == NULL)
685 return (ENXIO);
686
687 device_set_desc(dev, "System Resource");
688 device_quiet(dev);
689 return (BUS_PROBE_DEFAULT);
690 }
691
692 static int
693 acpi_sysres_attach(device_t dev)
694 {
695 device_t bus;
696 device_t gparent;
697 struct resource_list_entry *bus_rle, *dev_rle;
698 struct resource_list *bus_rl, *dev_rl;
699 int done, type;
700 u_long start, end, count;
701 /*
702 * Loop through all current resources to see if the new one overlaps
703 * any existing ones. If so, grow the old one up and/or down
704 * accordingly. Discard any that are wholly contained in the old. If
705 * the resource is unique, add it to the parent. It will later go into
706 * the rman pool.
707 */
708 bus = device_get_parent(dev);
709 gparent = device_get_parent(bus);
710 dev_rl = BUS_GET_RESOURCE_LIST(bus, dev);
711 bus_rl = BUS_GET_RESOURCE_LIST(device_get_parent(bus), bus);
712 if(bus_rl)
713 kprintf("busrl is not null!\n");
714 SLIST_FOREACH(dev_rle, dev_rl, link) {
715 if (dev_rle->type != SYS_RES_IOPORT && dev_rle->type != SYS_RES_MEMORY)
716 continue;
717
718 start = dev_rle->start;
719 end = dev_rle->end;
720 count = dev_rle->count;
721 type = dev_rle->type;
722 done = FALSE;
723 if(bus_rl) {
724 SLIST_FOREACH(bus_rle, bus_rl, link) {
725 if (bus_rle->type != type)
726 continue;
727
728 /* New resource wholly contained in old, discard. */
729 if (start >= bus_rle->start && end <= bus_rle->end)
730 break;
731
732 /* New tail overlaps old head, grow existing resource downward. */
733 if (start < bus_rle->start && end >= bus_rle->start) {
734 bus_rle->count += bus_rle->start - start;
735 bus_rle->start = start;
736 done = TRUE;
737 }
738
739 /* New head overlaps old tail, grow existing resource upward. */
740 if (start <= bus_rle->end && end > bus_rle->end) {
741 bus_rle->count += end - bus_rle->end;
742 bus_rle->end = end;
743 done = TRUE;
744 }
745
746 /* If we adjusted the old resource, we're finished. */
747 if (done)
748 break;
749 }
750 } else bus_rle = NULL;
751 /* If we didn't merge with anything, add this resource. */
752 if (bus_rle == NULL) {
753 bus_set_resource(bus, type, acpi_sysres_rid++, start, count);
754 }
755 }
756
757 /* After merging/moving resources to the parent, free the list. */
758 resource_list_free(dev_rl);
759
760 return (0);
761 }
DragonFly BSD