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acpi_resource.c revision 1.37
      1 /*	$NetBSD: acpi_resource.c,v 1.37 2015/07/27 04:50:50 msaitoh Exp $	*/
      2 
      3 /*
      4  * Copyright 2001 Wasabi Systems, Inc.
      5  * All rights reserved.
      6  *
      7  * Written by Jason R. Thorpe for Wasabi Systems, Inc.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. All advertising materials mentioning features or use of this software
     18  *    must display the following acknowledgement:
     19  *	This product includes software developed for the NetBSD Project by
     20  *	Wasabi Systems, Inc.
     21  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
     22  *    or promote products derived from this software without specific prior
     23  *    written permission.
     24  *
     25  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
     26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
     29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     35  * POSSIBILITY OF SUCH DAMAGE.
     36  */
     37 
     38 /*-
     39  * Copyright (c) 2000 Michael Smith
     40  * Copyright (c) 2000 BSDi
     41  * All rights reserved.
     42  *
     43  * Redistribution and use in source and binary forms, with or without
     44  * modification, are permitted provided that the following conditions
     45  * are met:
     46  * 1. Redistributions of source code must retain the above copyright
     47  *    notice, this list of conditions and the following disclaimer.
     48  * 2. Redistributions in binary form must reproduce the above copyright
     49  *    notice, this list of conditions and the following disclaimer in the
     50  *    documentation and/or other materials provided with the distribution.
     51  *
     52  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     53  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     54  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     55  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     56  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     57  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     58  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     59  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     60  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     61  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     62  * SUCH DAMAGE.
     63  */
     64 
     65 /*
     66  * ACPI resource parsing.
     67  */
     68 
     69 #include <sys/cdefs.h>
     70 __KERNEL_RCSID(0, "$NetBSD: acpi_resource.c,v 1.37 2015/07/27 04:50:50 msaitoh Exp $");
     71 
     72 #include <sys/param.h>
     73 #include <sys/device.h>
     74 #include <sys/systm.h>
     75 
     76 #include <dev/acpi/acpireg.h>
     77 #include <dev/acpi/acpivar.h>
     78 
     79 #define	_COMPONENT	ACPI_RESOURCE_COMPONENT
     80 ACPI_MODULE_NAME("RESOURCE")
     81 
     82 static ACPI_STATUS acpi_resource_parse_callback(ACPI_RESOURCE *, void *);
     83 
     84 struct resource_parse_callback_arg {
     85 	const struct acpi_resource_parse_ops *ops;
     86 	device_t dev;
     87 	void *context;
     88 };
     89 
     90 static ACPI_STATUS
     91 acpi_resource_parse_callback(ACPI_RESOURCE *res, void *context)
     92 {
     93 	struct resource_parse_callback_arg *arg = context;
     94 	const struct acpi_resource_parse_ops *ops;
     95 	int i;
     96 
     97 	ACPI_FUNCTION_TRACE(__func__);
     98 
     99 	ops = arg->ops;
    100 
    101 	switch (res->Type) {
    102 	case ACPI_RESOURCE_TYPE_END_TAG:
    103 		ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "EndTag\n"));
    104 		break;
    105 	case ACPI_RESOURCE_TYPE_FIXED_IO:
    106 		ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    107 				     "FixedIo 0x%x/%u\n",
    108 				     res->Data.FixedIo.Address,
    109 				     res->Data.FixedIo.AddressLength));
    110 		if (ops->ioport)
    111 			(*ops->ioport)(arg->dev, arg->context,
    112 			    res->Data.FixedIo.Address,
    113 			    res->Data.FixedIo.AddressLength);
    114 		break;
    115 
    116 	case ACPI_RESOURCE_TYPE_IO:
    117 		if (res->Data.Io.Minimum ==
    118 		    res->Data.Io.Maximum) {
    119 			ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    120 					     "Io 0x%x/%u\n",
    121 					     res->Data.Io.Minimum,
    122 					     res->Data.Io.AddressLength));
    123 			if (ops->ioport)
    124 				(*ops->ioport)(arg->dev, arg->context,
    125 				    res->Data.Io.Minimum,
    126 				    res->Data.Io.AddressLength);
    127 		} else {
    128 			ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    129 					     "Io 0x%x-0x%x/%u\n",
    130 					     res->Data.Io.Minimum,
    131 					     res->Data.Io.Maximum,
    132 					     res->Data.Io.AddressLength));
    133 			if (ops->iorange)
    134 				(*ops->iorange)(arg->dev, arg->context,
    135 				    res->Data.Io.Minimum,
    136 				    res->Data.Io.Maximum,
    137 				    res->Data.Io.AddressLength,
    138 				    res->Data.Io.Alignment);
    139 		}
    140 		break;
    141 
    142 	case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
    143 		ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    144 				     "FixedMemory32 0x%x/%u\n",
    145 				     res->Data.FixedMemory32.Address,
    146 				     res->Data.FixedMemory32.AddressLength));
    147 		if (ops->memory)
    148 			(*ops->memory)(arg->dev, arg->context,
    149 			    res->Data.FixedMemory32.Address,
    150 			    res->Data.FixedMemory32.AddressLength);
    151 		break;
    152 
    153 	case ACPI_RESOURCE_TYPE_MEMORY32:
    154 		if (res->Data.Memory32.Minimum ==
    155 		    res->Data.Memory32.Maximum) {
    156 			ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    157 					     "Memory32 0x%x/%u\n",
    158 					     res->Data.Memory32.Minimum,
    159 					     res->Data.Memory32.AddressLength));
    160 			if (ops->memory)
    161 				(*ops->memory)(arg->dev, arg->context,
    162 				    res->Data.Memory32.Minimum,
    163 				    res->Data.Memory32.AddressLength);
    164 		} else {
    165 			ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    166 					     "Memory32 0x%x-0x%x/%u\n",
    167 					     res->Data.Memory32.Minimum,
    168 					     res->Data.Memory32.Maximum,
    169 					     res->Data.Memory32.AddressLength));
    170 			if (ops->memrange)
    171 				(*ops->memrange)(arg->dev, arg->context,
    172 				    res->Data.Memory32.Minimum,
    173 				    res->Data.Memory32.Maximum,
    174 				    res->Data.Memory32.AddressLength,
    175 				    res->Data.Memory32.Alignment);
    176 		}
    177 		break;
    178 
    179 	case ACPI_RESOURCE_TYPE_MEMORY24:
    180 		if (res->Data.Memory24.Minimum ==
    181 		    res->Data.Memory24.Maximum) {
    182 			ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    183 					     "Memory24 0x%x/%u\n",
    184 					     res->Data.Memory24.Minimum,
    185 					     res->Data.Memory24.AddressLength));
    186 			if (ops->memory)
    187 				(*ops->memory)(arg->dev, arg->context,
    188 				    res->Data.Memory24.Minimum,
    189 				    res->Data.Memory24.AddressLength);
    190 		} else {
    191 			ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    192 					     "Memory24 0x%x-0x%x/%u\n",
    193 					     res->Data.Memory24.Minimum,
    194 					     res->Data.Memory24.Maximum,
    195 					     res->Data.Memory24.AddressLength));
    196 			if (ops->memrange)
    197 				(*ops->memrange)(arg->dev, arg->context,
    198 				    res->Data.Memory24.Minimum,
    199 				    res->Data.Memory24.Maximum,
    200 				    res->Data.Memory24.AddressLength,
    201 				    res->Data.Memory24.Alignment);
    202 		}
    203 		break;
    204 
    205 	case ACPI_RESOURCE_TYPE_IRQ:
    206 		for (i = 0; i < res->Data.Irq.InterruptCount; i++) {
    207 			ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    208 					     "IRQ %u\n",
    209 					     res->Data.Irq.Interrupts[i]));
    210 			if (ops->irq)
    211 				(*ops->irq)(arg->dev, arg->context,
    212 				    res->Data.Irq.Interrupts[i],
    213 				    res->Data.Irq.Triggering);
    214 		}
    215 		break;
    216 
    217 	case ACPI_RESOURCE_TYPE_DMA:
    218 		for (i = 0; i < res->Data.Dma.ChannelCount; i++) {
    219 			ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    220 					     "DRQ %u\n",
    221 					     res->Data.Dma.Channels[i]));
    222 			if (ops->drq)
    223 				(*ops->drq)(arg->dev, arg->context,
    224 				    res->Data.Dma.Channels[i]);
    225 		}
    226 		break;
    227 
    228 	case ACPI_RESOURCE_TYPE_START_DEPENDENT:
    229 		ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    230 				     "Start dependent functions: %u\n",
    231 				     res->Data.StartDpf.CompatibilityPriority));
    232 		if (ops->start_dep)
    233 			(*ops->start_dep)(arg->dev, arg->context,
    234 			    res->Data.StartDpf.CompatibilityPriority);
    235 		break;
    236 
    237 	case ACPI_RESOURCE_TYPE_END_DEPENDENT:
    238 		ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    239 				     "End dependent functions\n"));
    240 		if (ops->end_dep)
    241 			(*ops->end_dep)(arg->dev, arg->context);
    242 		break;
    243 
    244 	case ACPI_RESOURCE_TYPE_ADDRESS32:
    245 		/* XXX Only fixed size supported for now */
    246 		if (res->Data.Address32.Address.AddressLength == 0 ||
    247 		    res->Data.Address32.ProducerConsumer != ACPI_CONSUMER)
    248 			break;
    249 #define ADRRESS32_FIXED2(r)						\
    250 	((r)->Data.Address32.MinAddressFixed == ACPI_ADDRESS_FIXED &&	\
    251 	 (r)->Data.Address32.MaxAddressFixed == ACPI_ADDRESS_FIXED)
    252 		switch (res->Data.Address32.ResourceType) {
    253 		case ACPI_MEMORY_RANGE:
    254 			if (ADRRESS32_FIXED2(res)) {
    255 				if (ops->memory)
    256 					(*ops->memory)(arg->dev, arg->context,
    257 					    res->Data.Address32.Address.Minimum,
    258 					    res->Data.Address32.Address.AddressLength);
    259 			} else {
    260 				if (ops->memrange)
    261 					(*ops->memrange)(arg->dev, arg->context,
    262 					    res->Data.Address32.Address.Minimum,
    263 					    res->Data.Address32.Address.Maximum,
    264 					    res->Data.Address32.Address.AddressLength,
    265 					    res->Data.Address32.Address.Granularity);
    266 			}
    267 			break;
    268 		case ACPI_IO_RANGE:
    269 			if (ADRRESS32_FIXED2(res)) {
    270 				if (ops->ioport)
    271 					(*ops->ioport)(arg->dev, arg->context,
    272 					    res->Data.Address32.Address.Minimum,
    273 					    res->Data.Address32.Address.AddressLength);
    274 			} else {
    275 				if (ops->iorange)
    276 					(*ops->iorange)(arg->dev, arg->context,
    277 					    res->Data.Address32.Address.Minimum,
    278 					    res->Data.Address32.Address.Maximum,
    279 					    res->Data.Address32.Address.AddressLength,
    280 					    res->Data.Address32.Address.Granularity);
    281 			}
    282 			break;
    283 		case ACPI_BUS_NUMBER_RANGE:
    284 			ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    285 				      "Address32/BusNumber unimplemented\n"));
    286 			break;
    287 		}
    288 #undef ADRRESS32_FIXED2
    289 		break;
    290 
    291 	case ACPI_RESOURCE_TYPE_ADDRESS16:
    292 		ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    293 				     "Address16 unimplemented\n"));
    294 		break;
    295 
    296 	case ACPI_RESOURCE_TYPE_ADDRESS64:
    297 		ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    298 				     "Address64 unimplemented\n"));
    299 		break;
    300 	case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
    301 		ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    302 				     "Extended address64 unimplemented\n"));
    303 		break;
    304 
    305 	case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
    306 		if (res->Data.ExtendedIrq.ProducerConsumer != ACPI_CONSUMER) {
    307 			ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    308 			    "ignored ExtIRQ producer\n"));
    309 			break;
    310 		}
    311 		for (i = 0; i < res->Data.ExtendedIrq.InterruptCount; i++) {
    312 			ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    313 				     "ExtIRQ %u\n",
    314 				     res->Data.ExtendedIrq.Interrupts[i]));
    315 			if (ops->irq)
    316 				(*ops->irq)(arg->dev, arg->context,
    317 				    res->Data.ExtendedIrq.Interrupts[i],
    318 				    res->Data.ExtendedIrq.Triggering);
    319 		}
    320 		break;
    321 
    322 	case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
    323 		ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    324 				     "GenericRegister unimplemented\n"));
    325 		break;
    326 
    327 	case ACPI_RESOURCE_TYPE_VENDOR:
    328 		ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    329 				     "VendorSpecific unimplemented\n"));
    330 		break;
    331 
    332 	default:
    333 		ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    334 				     "Unknown resource type: %u\n", res->Type));
    335 		break;
    336 	}
    337 
    338 	return_ACPI_STATUS(AE_OK);
    339 }
    340 
    341 
    342 /*
    343  * acpi_resource_parse:
    344  *
    345  *	Parse a device node's resources and fill them in for the
    346  *	client.
    347  *
    348  *	This API supports _CRS (current resources) and
    349  *	_PRS (possible resources).
    350  *
    351  *	Note that it might be nice to also locate ACPI-specific resource
    352  *	items, such as GPE bits.
    353  */
    354 ACPI_STATUS
    355 acpi_resource_parse(device_t dev, ACPI_HANDLE handle, const char *path,
    356     void *arg, const struct acpi_resource_parse_ops *ops)
    357 {
    358 	struct resource_parse_callback_arg cbarg;
    359 	ACPI_STATUS rv;
    360 
    361 	ACPI_FUNCTION_TRACE(__func__);
    362 
    363 	if (ops->init)
    364 		(*ops->init)(dev, arg, &cbarg.context);
    365 	else
    366 		cbarg.context = arg;
    367 	cbarg.ops = ops;
    368 	cbarg.dev = dev;
    369 
    370 	rv = AcpiWalkResources(handle, path, acpi_resource_parse_callback,
    371 	    &cbarg);
    372 	if (ACPI_FAILURE(rv)) {
    373 		aprint_error_dev(dev, "ACPI: unable to get %s resources: %s\n",
    374 		    path, AcpiFormatException(rv));
    375 		return_ACPI_STATUS(rv);
    376 	}
    377 
    378 	if (ops->fini)
    379 		(*ops->fini)(dev, cbarg.context);
    380 
    381 	return_ACPI_STATUS(AE_OK);
    382 }
    383 
    384 /*
    385  * acpi_resource_print:
    386  *
    387  *	Print the resources assigned to a device.
    388  */
    389 void
    390 acpi_resource_print(device_t dev, struct acpi_resources *res)
    391 {
    392 	const char *sep;
    393 
    394 	if (SIMPLEQ_EMPTY(&res->ar_io) &&
    395 	    SIMPLEQ_EMPTY(&res->ar_iorange) &&
    396 	    SIMPLEQ_EMPTY(&res->ar_mem) &&
    397 	    SIMPLEQ_EMPTY(&res->ar_memrange) &&
    398 	    SIMPLEQ_EMPTY(&res->ar_irq) &&
    399 	    SIMPLEQ_EMPTY(&res->ar_drq))
    400 		return;
    401 
    402 	aprint_normal(":");
    403 
    404 	if (SIMPLEQ_EMPTY(&res->ar_io) == 0) {
    405 		struct acpi_io *ar;
    406 
    407 		sep = "";
    408 		aprint_normal(" io ");
    409 		SIMPLEQ_FOREACH(ar, &res->ar_io, ar_list) {
    410 			aprint_normal("%s0x%x", sep, ar->ar_base);
    411 			if (ar->ar_length > 1)
    412 				aprint_normal("-0x%x", ar->ar_base +
    413 				    ar->ar_length - 1);
    414 			sep = ",";
    415 		}
    416 	}
    417 
    418 	/* XXX iorange */
    419 
    420 	if (SIMPLEQ_EMPTY(&res->ar_mem) == 0) {
    421 		struct acpi_mem *ar;
    422 
    423 		sep = "";
    424 		aprint_normal(" mem ");
    425 		SIMPLEQ_FOREACH(ar, &res->ar_mem, ar_list) {
    426 			aprint_normal("%s0x%x", sep, ar->ar_base);
    427 			if (ar->ar_length > 1)
    428 				aprint_normal("-0x%x", ar->ar_base +
    429 				    ar->ar_length - 1);
    430 			sep = ",";
    431 		}
    432 	}
    433 
    434 	/* XXX memrange */
    435 
    436 	if (SIMPLEQ_EMPTY(&res->ar_irq) == 0) {
    437 		struct acpi_irq *ar;
    438 
    439 		sep = "";
    440 		aprint_normal(" irq ");
    441 		SIMPLEQ_FOREACH(ar, &res->ar_irq, ar_list) {
    442 			aprint_normal("%s%d", sep, ar->ar_irq);
    443 			sep = ",";
    444 		}
    445 	}
    446 
    447 	if (SIMPLEQ_EMPTY(&res->ar_drq) == 0) {
    448 		struct acpi_drq *ar;
    449 
    450 		sep = "";
    451 		aprint_normal(" drq ");
    452 		SIMPLEQ_FOREACH(ar, &res->ar_drq, ar_list) {
    453 			aprint_normal("%s%d", sep, ar->ar_drq);
    454 			sep = ",";
    455 		}
    456 	}
    457 
    458 	aprint_normal("\n");
    459 	aprint_naive("\n");
    460 }
    461 
    462 /*
    463  * acpi_resource_cleanup:
    464  *
    465  *	Free all allocated buffers
    466  */
    467 void
    468 acpi_resource_cleanup(struct acpi_resources *res)
    469 {
    470 	while (!SIMPLEQ_EMPTY(&res->ar_io)) {
    471 		struct acpi_io *ar;
    472 		ar = SIMPLEQ_FIRST(&res->ar_io);
    473 		SIMPLEQ_REMOVE_HEAD(&res->ar_io, ar_list);
    474 		ACPI_FREE(ar);
    475 	}
    476 
    477 	while (!SIMPLEQ_EMPTY(&res->ar_iorange)) {
    478 		struct acpi_iorange *ar;
    479 		ar = SIMPLEQ_FIRST(&res->ar_iorange);
    480 		SIMPLEQ_REMOVE_HEAD(&res->ar_iorange, ar_list);
    481 		ACPI_FREE(ar);
    482 	}
    483 
    484 	while (!SIMPLEQ_EMPTY(&res->ar_mem)) {
    485 		struct acpi_mem *ar;
    486 		ar = SIMPLEQ_FIRST(&res->ar_mem);
    487 		SIMPLEQ_REMOVE_HEAD(&res->ar_mem, ar_list);
    488 		ACPI_FREE(ar);
    489 	}
    490 
    491 	while (!SIMPLEQ_EMPTY(&res->ar_memrange)) {
    492 		struct acpi_memrange *ar;
    493 		ar = SIMPLEQ_FIRST(&res->ar_memrange);
    494 		SIMPLEQ_REMOVE_HEAD(&res->ar_memrange, ar_list);
    495 		ACPI_FREE(ar);
    496 	}
    497 
    498 	while (!SIMPLEQ_EMPTY(&res->ar_irq)) {
    499 		struct acpi_irq *ar;
    500 		ar = SIMPLEQ_FIRST(&res->ar_irq);
    501 		SIMPLEQ_REMOVE_HEAD(&res->ar_irq, ar_list);
    502 		ACPI_FREE(ar);
    503 	}
    504 
    505 	while (!SIMPLEQ_EMPTY(&res->ar_drq)) {
    506 		struct acpi_drq *ar;
    507 		ar = SIMPLEQ_FIRST(&res->ar_drq);
    508 		SIMPLEQ_REMOVE_HEAD(&res->ar_drq, ar_list);
    509 		ACPI_FREE(ar);
    510 	}
    511 
    512 	res->ar_nio = res->ar_niorange = res->ar_nmem =
    513 	    res->ar_nmemrange = res->ar_nirq = res->ar_ndrq = 0;
    514 }
    515 
    516 struct acpi_io *
    517 acpi_res_io(struct acpi_resources *res, int idx)
    518 {
    519 	struct acpi_io *ar;
    520 
    521 	SIMPLEQ_FOREACH(ar, &res->ar_io, ar_list) {
    522 		if (ar->ar_index == idx)
    523 			return ar;
    524 	}
    525 	return NULL;
    526 }
    527 
    528 struct acpi_iorange *
    529 acpi_res_iorange(struct acpi_resources *res, int idx)
    530 {
    531 	struct acpi_iorange *ar;
    532 
    533 	SIMPLEQ_FOREACH(ar, &res->ar_iorange, ar_list) {
    534 		if (ar->ar_index == idx)
    535 			return ar;
    536 	}
    537 	return NULL;
    538 }
    539 
    540 struct acpi_mem *
    541 acpi_res_mem(struct acpi_resources *res, int idx)
    542 {
    543 	struct acpi_mem *ar;
    544 
    545 	SIMPLEQ_FOREACH(ar, &res->ar_mem, ar_list) {
    546 		if (ar->ar_index == idx)
    547 			return ar;
    548 	}
    549 	return NULL;
    550 }
    551 
    552 struct acpi_memrange *
    553 acpi_res_memrange(struct acpi_resources *res, int idx)
    554 {
    555 	struct acpi_memrange *ar;
    556 
    557 	SIMPLEQ_FOREACH(ar, &res->ar_memrange, ar_list) {
    558 		if (ar->ar_index == idx)
    559 			return ar;
    560 	}
    561 	return NULL;
    562 }
    563 
    564 struct acpi_irq *
    565 acpi_res_irq(struct acpi_resources *res, int idx)
    566 {
    567 	struct acpi_irq *ar;
    568 
    569 	SIMPLEQ_FOREACH(ar, &res->ar_irq, ar_list) {
    570 		if (ar->ar_index == idx)
    571 			return ar;
    572 	}
    573 	return NULL;
    574 }
    575 
    576 struct acpi_drq *
    577 acpi_res_drq(struct acpi_resources *res, int idx)
    578 {
    579 	struct acpi_drq *ar;
    580 
    581 	SIMPLEQ_FOREACH(ar, &res->ar_drq, ar_list) {
    582 		if (ar->ar_index == idx)
    583 			return ar;
    584 	}
    585 	return NULL;
    586 }
    587 
    588 /*****************************************************************************
    589  * Default ACPI resource parse operations.
    590  *****************************************************************************/
    591 
    592 static void	acpi_res_parse_init(device_t, void *, void **);
    593 static void	acpi_res_parse_fini(device_t, void *);
    594 
    595 static void	acpi_res_parse_ioport(device_t, void *, uint32_t,
    596 		    uint32_t);
    597 static void	acpi_res_parse_iorange(device_t, void *, uint32_t,
    598 		    uint32_t, uint32_t, uint32_t);
    599 
    600 static void	acpi_res_parse_memory(device_t, void *, uint32_t,
    601 		    uint32_t);
    602 static void	acpi_res_parse_memrange(device_t, void *, uint32_t,
    603 		    uint32_t, uint32_t, uint32_t);
    604 
    605 static void	acpi_res_parse_irq(device_t, void *, uint32_t, uint32_t);
    606 static void	acpi_res_parse_drq(device_t, void *, uint32_t);
    607 
    608 static void	acpi_res_parse_start_dep(device_t, void *, int);
    609 static void	acpi_res_parse_end_dep(device_t, void *);
    610 
    611 const struct acpi_resource_parse_ops acpi_resource_parse_ops_default = {
    612 	.init = acpi_res_parse_init,
    613 	.fini = acpi_res_parse_fini,
    614 
    615 	.ioport = acpi_res_parse_ioport,
    616 	.iorange = acpi_res_parse_iorange,
    617 
    618 	.memory = acpi_res_parse_memory,
    619 	.memrange = acpi_res_parse_memrange,
    620 
    621 	.irq = acpi_res_parse_irq,
    622 	.drq = acpi_res_parse_drq,
    623 
    624 	.start_dep = acpi_res_parse_start_dep,
    625 	.end_dep = acpi_res_parse_end_dep,
    626 };
    627 
    628 const struct acpi_resource_parse_ops acpi_resource_parse_ops_quiet = {
    629 	.init = acpi_res_parse_init,
    630 	.fini = NULL,
    631 
    632 	.ioport = acpi_res_parse_ioport,
    633 	.iorange = acpi_res_parse_iorange,
    634 
    635 	.memory = acpi_res_parse_memory,
    636 	.memrange = acpi_res_parse_memrange,
    637 
    638 	.irq = acpi_res_parse_irq,
    639 	.drq = acpi_res_parse_drq,
    640 
    641 	.start_dep = acpi_res_parse_start_dep,
    642 	.end_dep = acpi_res_parse_end_dep,
    643 };
    644 
    645 static void
    646 acpi_res_parse_init(device_t dev, void *arg, void **contextp)
    647 {
    648 	struct acpi_resources *res = arg;
    649 
    650 	SIMPLEQ_INIT(&res->ar_io);
    651 	res->ar_nio = 0;
    652 
    653 	SIMPLEQ_INIT(&res->ar_iorange);
    654 	res->ar_niorange = 0;
    655 
    656 	SIMPLEQ_INIT(&res->ar_mem);
    657 	res->ar_nmem = 0;
    658 
    659 	SIMPLEQ_INIT(&res->ar_memrange);
    660 	res->ar_nmemrange = 0;
    661 
    662 	SIMPLEQ_INIT(&res->ar_irq);
    663 	res->ar_nirq = 0;
    664 
    665 	SIMPLEQ_INIT(&res->ar_drq);
    666 	res->ar_ndrq = 0;
    667 
    668 	*contextp = res;
    669 }
    670 
    671 static void
    672 acpi_res_parse_fini(device_t dev, void *context)
    673 {
    674 	struct acpi_resources *res = context;
    675 
    676 	/* Print the resources we're using. */
    677 	acpi_resource_print(dev, res);
    678 }
    679 
    680 static void
    681 acpi_res_parse_ioport(device_t dev, void *context, uint32_t base,
    682     uint32_t length)
    683 {
    684 	struct acpi_resources *res = context;
    685 	struct acpi_io *ar;
    686 
    687 	/*
    688 	 * Check if there is another I/O port directly below/under
    689 	 * this one.
    690 	 */
    691 	SIMPLEQ_FOREACH(ar, &res->ar_io, ar_list) {
    692 		if (ar->ar_base == base + length ) {
    693 			/*
    694 			 * Entry just below existing entry - adjust
    695 			 * the entry and return.
    696 			 */
    697 			ar->ar_base = base;
    698 			ar->ar_length += length;
    699 			return;
    700 		} else if (ar->ar_base + ar->ar_length == base) {
    701 			/*
    702 			 * Entry just above existing entry - adjust
    703 			 * the entry and return.
    704 			 */
    705 			ar->ar_length += length;
    706 			return;
    707 		}
    708 	}
    709 
    710 	ar = ACPI_ALLOCATE(sizeof(*ar));
    711 	if (ar == NULL) {
    712 		aprint_error_dev(dev, "ACPI: unable to allocate I/O resource %d\n",
    713 		    res->ar_nio);
    714 		res->ar_nio++;
    715 		return;
    716 	}
    717 
    718 	ar->ar_index = res->ar_nio++;
    719 	ar->ar_base = base;
    720 	ar->ar_length = length;
    721 
    722 	SIMPLEQ_INSERT_TAIL(&res->ar_io, ar, ar_list);
    723 }
    724 
    725 static void
    726 acpi_res_parse_iorange(device_t dev, void *context, uint32_t low,
    727     uint32_t high, uint32_t length, uint32_t align)
    728 {
    729 	struct acpi_resources *res = context;
    730 	struct acpi_iorange *ar;
    731 
    732 	ar = ACPI_ALLOCATE(sizeof(*ar));
    733 	if (ar == NULL) {
    734 		aprint_error_dev(dev, "ACPI: unable to allocate I/O range resource %d\n",
    735 		    res->ar_niorange);
    736 		res->ar_niorange++;
    737 		return;
    738 	}
    739 
    740 	ar->ar_index = res->ar_niorange++;
    741 	ar->ar_low = low;
    742 	ar->ar_high = high;
    743 	ar->ar_length = length;
    744 	ar->ar_align = align;
    745 
    746 	SIMPLEQ_INSERT_TAIL(&res->ar_iorange, ar, ar_list);
    747 }
    748 
    749 static void
    750 acpi_res_parse_memory(device_t dev, void *context, uint32_t base,
    751     uint32_t length)
    752 {
    753 	struct acpi_resources *res = context;
    754 	struct acpi_mem *ar;
    755 
    756 	ar = ACPI_ALLOCATE(sizeof(*ar));
    757 	if (ar == NULL) {
    758 		aprint_error_dev(dev, "ACPI: unable to allocate Memory resource %d\n",
    759 		    res->ar_nmem);
    760 		res->ar_nmem++;
    761 		return;
    762 	}
    763 
    764 	ar->ar_index = res->ar_nmem++;
    765 	ar->ar_base = base;
    766 	ar->ar_length = length;
    767 
    768 	SIMPLEQ_INSERT_TAIL(&res->ar_mem, ar, ar_list);
    769 }
    770 
    771 static void
    772 acpi_res_parse_memrange(device_t dev, void *context, uint32_t low,
    773     uint32_t high, uint32_t length, uint32_t align)
    774 {
    775 	struct acpi_resources *res = context;
    776 	struct acpi_memrange *ar;
    777 
    778 	ar = ACPI_ALLOCATE(sizeof(*ar));
    779 	if (ar == NULL) {
    780 		aprint_error_dev(dev, "ACPI: unable to allocate Memory range resource %d\n",
    781 		    res->ar_nmemrange);
    782 		res->ar_nmemrange++;
    783 		return;
    784 	}
    785 
    786 	ar->ar_index = res->ar_nmemrange++;
    787 	ar->ar_low = low;
    788 	ar->ar_high = high;
    789 	ar->ar_length = length;
    790 	ar->ar_align = align;
    791 
    792 	SIMPLEQ_INSERT_TAIL(&res->ar_memrange, ar, ar_list);
    793 }
    794 
    795 static void
    796 acpi_res_parse_irq(device_t dev, void *context, uint32_t irq, uint32_t type)
    797 {
    798 	struct acpi_resources *res = context;
    799 	struct acpi_irq *ar;
    800 
    801 	ar = ACPI_ALLOCATE(sizeof(*ar));
    802 	if (ar == NULL) {
    803 		aprint_error_dev(dev, "ACPI: unable to allocate IRQ resource %d\n",
    804 		    res->ar_nirq);
    805 		res->ar_nirq++;
    806 		return;
    807 	}
    808 
    809 	ar->ar_index = res->ar_nirq++;
    810 	ar->ar_irq = irq;
    811 	ar->ar_type = type;
    812 
    813 	SIMPLEQ_INSERT_TAIL(&res->ar_irq, ar, ar_list);
    814 }
    815 
    816 static void
    817 acpi_res_parse_drq(device_t dev, void *context, uint32_t drq)
    818 {
    819 	struct acpi_resources *res = context;
    820 	struct acpi_drq *ar;
    821 
    822 	ar = ACPI_ALLOCATE(sizeof(*ar));
    823 	if (ar == NULL) {
    824 		aprint_error_dev(dev, "ACPI: unable to allocate DRQ resource %d\n",
    825 		    res->ar_ndrq);
    826 		res->ar_ndrq++;
    827 		return;
    828 	}
    829 
    830 	ar->ar_index = res->ar_ndrq++;
    831 	ar->ar_drq = drq;
    832 
    833 	SIMPLEQ_INSERT_TAIL(&res->ar_drq, ar, ar_list);
    834 }
    835 
    836 static void
    837 acpi_res_parse_start_dep(device_t dev, void *context,
    838     int preference)
    839 {
    840 
    841 	aprint_error_dev(dev, "ACPI: dependent functions not supported\n");
    842 }
    843 
    844 static void
    845 acpi_res_parse_end_dep(device_t dev, void *context)
    846 {
    847 
    848 	/* Nothing to do. */
    849 }
    850