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acpi_resource.c revision 1.19
      1 /*	$NetBSD: acpi_resource.c,v 1.19 2006/01/29 03:12:22 kochi 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 1.19 2006/01/29 03:12:22 kochi Exp $");
     71 
     72 #include <sys/param.h>
     73 #include <sys/systm.h>
     74 #include <sys/device.h>
     75 
     76 #include <dev/acpi/acpica.h>
     77 #include <dev/acpi/acpireg.h>
     78 #include <dev/acpi/acpivar.h>
     79 
     80 #define	_COMPONENT	ACPI_RESOURCE_COMPONENT
     81 ACPI_MODULE_NAME("RESOURCE")
     82 
     83 static ACPI_STATUS acpi_resource_parse_callback(ACPI_RESOURCE *, void *);
     84 
     85 struct resource_parse_callback_arg {
     86 	const struct acpi_resource_parse_ops *ops;
     87 	struct device *dev;
     88 	void *context;
     89 };
     90 
     91 static ACPI_STATUS
     92 acpi_resource_parse_callback(ACPI_RESOURCE *res, void *context)
     93 {
     94 	struct resource_parse_callback_arg *arg = context;
     95 	const struct acpi_resource_parse_ops *ops;
     96 	int i;
     97 
     98 	ACPI_FUNCTION_TRACE(__FUNCTION__);
     99 
    100 	ops = arg->ops;
    101 
    102 	switch (res->Type) {
    103 	case ACPI_RESOURCE_TYPE_FIXED_IO:
    104 		ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    105 				     "FixedIo 0x%x/%d\n",
    106 				     res->Data.FixedIo.Address,
    107 				     res->Data.FixedIo.AddressLength));
    108 		if (ops->ioport)
    109 			(*ops->ioport)(arg->dev, arg->context,
    110 			    res->Data.FixedIo.Address,
    111 			    res->Data.FixedIo.AddressLength);
    112 		break;
    113 
    114 	case ACPI_RESOURCE_TYPE_IO:
    115 		if (res->Data.Io.Minimum ==
    116 			    res->Data.Io.Maximum) {
    117 			ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    118 					     "Io 0x%x/%d\n",
    119 					     res->Data.Io.Minimum,
    120 					     res->Data.Io.AddressLength));
    121 			if (ops->ioport)
    122 				(*ops->ioport)(arg->dev, arg->context,
    123 				    res->Data.Io.Minimum,
    124 				    res->Data.Io.AddressLength);
    125 		} else {
    126 			ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    127 					     "Io 0x%x-0x%x/%d\n",
    128 					     res->Data.Io.Minimum,
    129 					     res->Data.Io.Maximum,
    130 					     res->Data.Io.AddressLength));
    131 			if (ops->ioport)
    132 				(*ops->iorange)(arg->dev, arg->context,
    133 				    res->Data.Io.Minimum,
    134 				    res->Data.Io.Maximum,
    135 				    res->Data.Io.AddressLength,
    136 				    res->Data.Io.Alignment);
    137 		}
    138 		break;
    139 
    140 	case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
    141 		ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    142 				     "FixedMemory32 0x%x/%d\n",
    143 				     res->Data.FixedMemory32.Address,
    144 				     res->Data.FixedMemory32.AddressLength));
    145 		if (ops->memory)
    146 			(*ops->memory)(arg->dev, arg->context,
    147 			    res->Data.FixedMemory32.Address,
    148 			    res->Data.FixedMemory32.AddressLength);
    149 		break;
    150 
    151 	case ACPI_RESOURCE_TYPE_MEMORY32:
    152 		if (res->Data.Memory32.Minimum ==
    153 		    res->Data.Memory32.Maximum) {
    154 			ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    155 					     "Memory32 0x%x/%d\n",
    156 					     res->Data.Memory32.Minimum,
    157 					     res->Data.Memory32.AddressLength));
    158 			if (ops->memory)
    159 				(*ops->memory)(arg->dev, arg->context,
    160 				    res->Data.Memory32.Minimum,
    161 				    res->Data.Memory32.AddressLength);
    162 		} else {
    163 			ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    164 					     "Memory32 0x%x-0x%x/%d\n",
    165 					     res->Data.Memory32.Minimum,
    166 					     res->Data.Memory32.Maximum,
    167 					     res->Data.Memory32.AddressLength));
    168 			if (ops->memrange)
    169 				(*ops->memrange)(arg->dev, arg->context,
    170 				    res->Data.Memory32.Minimum,
    171 				    res->Data.Memory32.Maximum,
    172 				    res->Data.Memory32.AddressLength,
    173 				    res->Data.Memory32.Alignment);
    174 		}
    175 		break;
    176 
    177 	case ACPI_RESOURCE_TYPE_MEMORY24:
    178 		if (res->Data.Memory24.Minimum ==
    179 		    res->Data.Memory24.Maximum) {
    180 			ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    181 					     "Memory24 0x%x/%d\n",
    182 					     res->Data.Memory24.Minimum,
    183 					     res->Data.Memory24.AddressLength));
    184 			if (ops->memory)
    185 				(*ops->memory)(arg->dev, arg->context,
    186 				    res->Data.Memory24.Minimum,
    187 				    res->Data.Memory24.AddressLength);
    188 		} else {
    189 			ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    190 					     "Memory24 0x%x-0x%x/%d\n",
    191 					     res->Data.Memory24.Minimum,
    192 					     res->Data.Memory24.Maximum,
    193 					     res->Data.Memory24.AddressLength));
    194 			if (ops->memrange)
    195 				(*ops->memrange)(arg->dev, arg->context,
    196 				    res->Data.Memory24.Minimum,
    197 				    res->Data.Memory24.Maximum,
    198 				    res->Data.Memory24.AddressLength,
    199 				    res->Data.Memory24.Alignment);
    200 		}
    201 		break;
    202 
    203 	case ACPI_RESOURCE_TYPE_IRQ:
    204 		for (i = 0; i < res->Data.Irq.InterruptCount; i++) {
    205 			ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    206 					     "IRQ %d\n",
    207 					     res->Data.Irq.Interrupts[i]));
    208 			if (ops->irq)
    209 				(*ops->irq)(arg->dev, arg->context,
    210 				    res->Data.Irq.Interrupts[i],
    211 				    res->Data.Irq.Triggering);
    212 		}
    213 		break;
    214 
    215 	case ACPI_RESOURCE_TYPE_DMA:
    216 		for (i = 0; i < res->Data.Dma.ChannelCount; i++) {
    217 			ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    218 					     "DRQ %d\n",
    219 					     res->Data.Dma.Channels[i]));
    220 			if (ops->drq)
    221 				(*ops->drq)(arg->dev, arg->context,
    222 				    res->Data.Dma.Channels[i]);
    223 		}
    224 		break;
    225 
    226 	case ACPI_RESOURCE_TYPE_START_DEPENDENT:
    227 		ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    228 				     "Start dependant functions: %d\n",
    229 				     res->Data.StartDpf.CompatibilityPriority));
    230 		if (ops->start_dep)
    231 			(*ops->start_dep)(arg->dev, arg->context,
    232 			    res->Data.StartDpf.CompatibilityPriority);
    233 		break;
    234 
    235 	case ACPI_RESOURCE_TYPE_END_DEPENDENT:
    236 		ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    237 				     "End dependant functions\n"));
    238 		if (ops->end_dep)
    239 			(*ops->end_dep)(arg->dev, arg->context);
    240 
    241 	case ACPI_RESOURCE_TYPE_ADDRESS32:
    242 		ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    243 				     "Address32 unimplemented\n"));
    244 		break;
    245 
    246 	case ACPI_RESOURCE_TYPE_ADDRESS16:
    247 		ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    248 				     "Address16 unimplemented\n"));
    249 		break;
    250 
    251 	case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
    252 		ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    253 				     "Extended address64 unimplemented\n"));
    254 		break;
    255 
    256 	case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
    257 		ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    258 				     "ExtendedIrq unimplemented\n"));
    259 		break;
    260 
    261 	case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
    262 		ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    263 				     "ExtendedIrq unimplemented\n"));
    264 		break;
    265 
    266 	case ACPI_RESOURCE_TYPE_VENDOR:
    267 		ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    268 				     "VendorSpecific unimplemented\n"));
    269 		break;
    270 
    271 	default:
    272 		ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
    273 				     "Unknown resource type: %d\n", res->Type));
    274 		break;
    275 	}
    276 
    277 	return_ACPI_STATUS(AE_OK);
    278 }
    279 
    280 
    281 /*
    282  * acpi_resource_parse:
    283  *
    284  *	Parse a device node's resources and fill them in for the
    285  *	client.
    286  *
    287  *	This API supports _CRS (current resources) and
    288  *	_PRS (possible resources).
    289  *
    290  *	Note that it might be nice to also locate ACPI-specific resource
    291  *	items, such as GPE bits.
    292  */
    293 ACPI_STATUS
    294 acpi_resource_parse(struct device *dev, ACPI_HANDLE handle, const char *path,
    295     void *arg, const struct acpi_resource_parse_ops *ops)
    296 {
    297 	struct resource_parse_callback_arg cbarg;
    298 	ACPI_STATUS rv;
    299 
    300 	ACPI_FUNCTION_TRACE(__FUNCTION__);
    301 
    302 	if (ops->init)
    303 		(*ops->init)(dev, arg, &cbarg.context);
    304 	else
    305 		cbarg.context = arg;
    306 	cbarg.ops = ops;
    307 	cbarg.dev = dev;
    308 
    309 	rv = AcpiWalkResources(handle, path, acpi_resource_parse_callback,
    310 	    &cbarg);
    311 	if (ACPI_FAILURE(rv)) {
    312 		printf("%s: ACPI: unable to get %s resources: %s\n",
    313 		    dev->dv_xname, path, AcpiFormatException(rv));
    314 		return_ACPI_STATUS(rv);
    315 	}
    316 
    317 	if (ops->fini)
    318 		(*ops->fini)(dev, cbarg.context);
    319 
    320 	return_ACPI_STATUS(AE_OK);
    321 }
    322 
    323 /*
    324  * acpi_resource_print:
    325  *
    326  *	Print the resources assigned to a device.
    327  */
    328 void
    329 acpi_resource_print(struct device *dev, struct acpi_resources *res)
    330 {
    331 	const char *sep;
    332 
    333 	if (SIMPLEQ_EMPTY(&res->ar_io) &&
    334 	    SIMPLEQ_EMPTY(&res->ar_iorange) &&
    335 	    SIMPLEQ_EMPTY(&res->ar_mem) &&
    336 	    SIMPLEQ_EMPTY(&res->ar_memrange) &&
    337 	    SIMPLEQ_EMPTY(&res->ar_irq) &&
    338 	    SIMPLEQ_EMPTY(&res->ar_drq))
    339 		return;
    340 
    341 	printf("%s:", dev->dv_xname);
    342 
    343 	if (SIMPLEQ_EMPTY(&res->ar_io) == 0) {
    344 		struct acpi_io *ar;
    345 
    346 		sep = "";
    347 		printf(" io ");
    348 		SIMPLEQ_FOREACH(ar, &res->ar_io, ar_list) {
    349 			printf("%s0x%x", sep, ar->ar_base);
    350 			if (ar->ar_length > 1)
    351 				printf("-0x%x", ar->ar_base +
    352 				    ar->ar_length - 1);
    353 			sep = ",";
    354 		}
    355 	}
    356 
    357 	/* XXX iorange */
    358 
    359 	if (SIMPLEQ_EMPTY(&res->ar_mem) == 0) {
    360 		struct acpi_mem *ar;
    361 
    362 		sep = "";
    363 		printf(" mem ");
    364 		SIMPLEQ_FOREACH(ar, &res->ar_mem, ar_list) {
    365 			printf("%s0x%x", sep, ar->ar_base);
    366 			if (ar->ar_length > 1)
    367 				printf("-0x%x", ar->ar_base +
    368 				    ar->ar_length - 1);
    369 			sep = ",";
    370 		}
    371 	}
    372 
    373 	/* XXX memrange */
    374 
    375 	if (SIMPLEQ_EMPTY(&res->ar_irq) == 0) {
    376 		struct acpi_irq *ar;
    377 
    378 		sep = "";
    379 		printf(" irq ");
    380 		SIMPLEQ_FOREACH(ar, &res->ar_irq, ar_list) {
    381 			printf("%s%d", sep, ar->ar_irq);
    382 			sep = ",";
    383 		}
    384 	}
    385 
    386 	if (SIMPLEQ_EMPTY(&res->ar_drq) == 0) {
    387 		struct acpi_drq *ar;
    388 
    389 		sep = "";
    390 		printf(" drq ");
    391 		SIMPLEQ_FOREACH(ar, &res->ar_drq, ar_list) {
    392 			printf("%s%d", sep, ar->ar_drq);
    393 			sep = ",";
    394 		}
    395 	}
    396 
    397 	printf("\n");
    398 }
    399 
    400 /*
    401  * acpi_resource_cleanup:
    402  *
    403  *	Free all allocated buffers
    404  */
    405 void
    406 acpi_resource_cleanup(struct acpi_resources *res)
    407 {
    408 	while (!SIMPLEQ_EMPTY(&res->ar_io)) {
    409 		struct acpi_io *ar;
    410 		ar = SIMPLEQ_FIRST(&res->ar_io);
    411 		SIMPLEQ_REMOVE_HEAD(&res->ar_io, ar_list);
    412 		AcpiOsFree(ar);
    413 	}
    414 
    415 	while (!SIMPLEQ_EMPTY(&res->ar_iorange)) {
    416 		struct acpi_iorange *ar;
    417 		ar = SIMPLEQ_FIRST(&res->ar_iorange);
    418 		SIMPLEQ_REMOVE_HEAD(&res->ar_iorange, ar_list);
    419 		AcpiOsFree(ar);
    420 	}
    421 
    422 	while (!SIMPLEQ_EMPTY(&res->ar_mem)) {
    423 		struct acpi_mem *ar;
    424 		ar = SIMPLEQ_FIRST(&res->ar_mem);
    425 		SIMPLEQ_REMOVE_HEAD(&res->ar_mem, ar_list);
    426 		AcpiOsFree(ar);
    427 	}
    428 
    429 	while (!SIMPLEQ_EMPTY(&res->ar_memrange)) {
    430 		struct acpi_memrange *ar;
    431 		ar = SIMPLEQ_FIRST(&res->ar_memrange);
    432 		SIMPLEQ_REMOVE_HEAD(&res->ar_memrange, ar_list);
    433 		AcpiOsFree(ar);
    434 	}
    435 
    436 	while (!SIMPLEQ_EMPTY(&res->ar_irq)) {
    437 		struct acpi_irq *ar;
    438 		ar = SIMPLEQ_FIRST(&res->ar_irq);
    439 		SIMPLEQ_REMOVE_HEAD(&res->ar_irq, ar_list);
    440 		AcpiOsFree(ar);
    441 	}
    442 
    443 	while (!SIMPLEQ_EMPTY(&res->ar_drq)) {
    444 		struct acpi_drq *ar;
    445 		ar = SIMPLEQ_FIRST(&res->ar_drq);
    446 		SIMPLEQ_REMOVE_HEAD(&res->ar_drq, ar_list);
    447 		AcpiOsFree(ar);
    448 	}
    449 
    450 	res->ar_nio = res->ar_niorange = res->ar_nmem =
    451 	    res->ar_nmemrange = res->ar_nirq = res->ar_ndrq = 0;
    452 }
    453 
    454 struct acpi_io *
    455 acpi_res_io(struct acpi_resources *res, int idx)
    456 {
    457 	struct acpi_io *ar;
    458 
    459 	SIMPLEQ_FOREACH(ar, &res->ar_io, ar_list) {
    460 		if (ar->ar_index == idx)
    461 			return ar;
    462 	}
    463 	return NULL;
    464 }
    465 
    466 struct acpi_iorange *
    467 acpi_res_iorange(struct acpi_resources *res, int idx)
    468 {
    469 	struct acpi_iorange *ar;
    470 
    471 	SIMPLEQ_FOREACH(ar, &res->ar_iorange, ar_list) {
    472 		if (ar->ar_index == idx)
    473 			return ar;
    474 	}
    475 	return NULL;
    476 }
    477 
    478 struct acpi_mem *
    479 acpi_res_mem(struct acpi_resources *res, int idx)
    480 {
    481 	struct acpi_mem *ar;
    482 
    483 	SIMPLEQ_FOREACH(ar, &res->ar_mem, ar_list) {
    484 		if (ar->ar_index == idx)
    485 			return ar;
    486 	}
    487 	return NULL;
    488 }
    489 
    490 struct acpi_memrange *
    491 acpi_res_memrange(struct acpi_resources *res, int idx)
    492 {
    493 	struct acpi_memrange *ar;
    494 
    495 	SIMPLEQ_FOREACH(ar, &res->ar_memrange, ar_list) {
    496 		if (ar->ar_index == idx)
    497 			return ar;
    498 	}
    499 	return NULL;
    500 }
    501 
    502 struct acpi_irq *
    503 acpi_res_irq(struct acpi_resources *res, int idx)
    504 {
    505 	struct acpi_irq *ar;
    506 
    507 	SIMPLEQ_FOREACH(ar, &res->ar_irq, ar_list) {
    508 		if (ar->ar_index == idx)
    509 			return ar;
    510 	}
    511 	return NULL;
    512 }
    513 
    514 struct acpi_drq *
    515 acpi_res_drq(struct acpi_resources *res, int idx)
    516 {
    517 	struct acpi_drq *ar;
    518 
    519 	SIMPLEQ_FOREACH(ar, &res->ar_drq, ar_list) {
    520 		if (ar->ar_index == idx)
    521 			return ar;
    522 	}
    523 	return NULL;
    524 }
    525 
    526 /*****************************************************************************
    527  * Default ACPI resource parse operations.
    528  *****************************************************************************/
    529 
    530 static void	acpi_res_parse_init(struct device *, void *, void **);
    531 static void	acpi_res_parse_fini(struct device *, void *);
    532 
    533 static void	acpi_res_parse_ioport(struct device *, void *, uint32_t,
    534 		    uint32_t);
    535 static void	acpi_res_parse_iorange(struct device *, void *, uint32_t,
    536 		    uint32_t, uint32_t, uint32_t);
    537 
    538 static void	acpi_res_parse_memory(struct device *, void *, uint32_t,
    539 		    uint32_t);
    540 static void	acpi_res_parse_memrange(struct device *, void *, uint32_t,
    541 		    uint32_t, uint32_t, uint32_t);
    542 
    543 static void	acpi_res_parse_irq(struct device *, void *, uint32_t, uint32_t);
    544 static void	acpi_res_parse_drq(struct device *, void *, uint32_t);
    545 
    546 static void	acpi_res_parse_start_dep(struct device *, void *, int);
    547 static void	acpi_res_parse_end_dep(struct device *, void *);
    548 
    549 const struct acpi_resource_parse_ops acpi_resource_parse_ops_default = {
    550 	.init = acpi_res_parse_init,
    551 	.fini = acpi_res_parse_fini,
    552 
    553 	.ioport = acpi_res_parse_ioport,
    554 	.iorange = acpi_res_parse_iorange,
    555 
    556 	.memory = acpi_res_parse_memory,
    557 	.memrange = acpi_res_parse_memrange,
    558 
    559 	.irq = acpi_res_parse_irq,
    560 	.drq = acpi_res_parse_drq,
    561 
    562 	.start_dep = acpi_res_parse_start_dep,
    563 	.end_dep = acpi_res_parse_end_dep,
    564 };
    565 
    566 static void
    567 acpi_res_parse_init(struct device *dev, void *arg, void **contextp)
    568 {
    569 	struct acpi_resources *res = arg;
    570 
    571 	SIMPLEQ_INIT(&res->ar_io);
    572 	res->ar_nio = 0;
    573 
    574 	SIMPLEQ_INIT(&res->ar_iorange);
    575 	res->ar_niorange = 0;
    576 
    577 	SIMPLEQ_INIT(&res->ar_mem);
    578 	res->ar_nmem = 0;
    579 
    580 	SIMPLEQ_INIT(&res->ar_memrange);
    581 	res->ar_nmemrange = 0;
    582 
    583 	SIMPLEQ_INIT(&res->ar_irq);
    584 	res->ar_nirq = 0;
    585 
    586 	SIMPLEQ_INIT(&res->ar_drq);
    587 	res->ar_ndrq = 0;
    588 
    589 	*contextp = res;
    590 }
    591 
    592 static void
    593 acpi_res_parse_fini(struct device *dev, void *context)
    594 {
    595 	struct acpi_resources *res = context;
    596 
    597 	/* Print the resources we're using. */
    598 	acpi_resource_print(dev, res);
    599 }
    600 
    601 static void
    602 acpi_res_parse_ioport(struct device *dev, void *context, uint32_t base,
    603     uint32_t length)
    604 {
    605 	struct acpi_resources *res = context;
    606 	struct acpi_io *ar;
    607 
    608 	/*
    609 	 * Check if there is another I/O port directly below/under
    610 	 * this one.
    611 	 */
    612 	SIMPLEQ_FOREACH(ar, &res->ar_io, ar_list) {
    613 		if (ar->ar_base == base + length ) {
    614 			/*
    615 			 * Entry just below existing entry - adjust
    616 			 * the entry and return.
    617 			 */
    618 			ar->ar_base = base;
    619 			ar->ar_length += length;
    620 			return;
    621 		} else if (ar->ar_base + ar->ar_length == base) {
    622 			/*
    623 			 * Entry just above existing entry - adjust
    624 			 * the entry and return.
    625 			 */
    626 			ar->ar_length += length;
    627 			return;
    628 		}
    629 	}
    630 
    631 	ar = AcpiOsAllocate(sizeof(*ar));
    632 	if (ar == NULL) {
    633 		printf("%s: ACPI: unable to allocate I/O resource %d\n",
    634 		    dev->dv_xname, res->ar_nio);
    635 		res->ar_nio++;
    636 		return;
    637 	}
    638 
    639 	ar->ar_index = res->ar_nio++;
    640 	ar->ar_base = base;
    641 	ar->ar_length = length;
    642 
    643 	SIMPLEQ_INSERT_TAIL(&res->ar_io, ar, ar_list);
    644 }
    645 
    646 static void
    647 acpi_res_parse_iorange(struct device *dev, void *context, uint32_t low,
    648     uint32_t high, uint32_t length, uint32_t align)
    649 {
    650 	struct acpi_resources *res = context;
    651 	struct acpi_iorange *ar;
    652 
    653 	ar = AcpiOsAllocate(sizeof(*ar));
    654 	if (ar == NULL) {
    655 		printf("%s: ACPI: unable to allocate I/O range resource %d\n",
    656 		    dev->dv_xname, res->ar_niorange);
    657 		res->ar_niorange++;
    658 		return;
    659 	}
    660 
    661 	ar->ar_index = res->ar_niorange++;
    662 	ar->ar_low = low;
    663 	ar->ar_high = high;
    664 	ar->ar_length = length;
    665 	ar->ar_align = align;
    666 
    667 	SIMPLEQ_INSERT_TAIL(&res->ar_iorange, ar, ar_list);
    668 }
    669 
    670 static void
    671 acpi_res_parse_memory(struct device *dev, void *context, uint32_t base,
    672     uint32_t length)
    673 {
    674 	struct acpi_resources *res = context;
    675 	struct acpi_mem *ar;
    676 
    677 	ar = AcpiOsAllocate(sizeof(*ar));
    678 	if (ar == NULL) {
    679 		printf("%s: ACPI: unable to allocate Memory resource %d\n",
    680 		    dev->dv_xname, res->ar_nmem);
    681 		res->ar_nmem++;
    682 		return;
    683 	}
    684 
    685 	ar->ar_index = res->ar_nmem++;
    686 	ar->ar_base = base;
    687 	ar->ar_length = length;
    688 
    689 	SIMPLEQ_INSERT_TAIL(&res->ar_mem, ar, ar_list);
    690 }
    691 
    692 static void
    693 acpi_res_parse_memrange(struct device *dev, void *context, uint32_t low,
    694     uint32_t high, uint32_t length, uint32_t align)
    695 {
    696 	struct acpi_resources *res = context;
    697 	struct acpi_memrange *ar;
    698 
    699 	ar = AcpiOsAllocate(sizeof(*ar));
    700 	if (ar == NULL) {
    701 		printf("%s: ACPI: unable to allocate Memory range resource "
    702 		    "%d\n", dev->dv_xname, res->ar_nmemrange);
    703 		res->ar_nmemrange++;
    704 		return;
    705 	}
    706 
    707 	ar->ar_index = res->ar_nmemrange++;
    708 	ar->ar_low = low;
    709 	ar->ar_high = high;
    710 	ar->ar_length = length;
    711 	ar->ar_align = align;
    712 
    713 	SIMPLEQ_INSERT_TAIL(&res->ar_memrange, ar, ar_list);
    714 }
    715 
    716 static void
    717 acpi_res_parse_irq(struct device *dev, void *context, uint32_t irq, uint32_t type)
    718 {
    719 	struct acpi_resources *res = context;
    720 	struct acpi_irq *ar;
    721 
    722 	ar = AcpiOsAllocate(sizeof(*ar));
    723 	if (ar == NULL) {
    724 		printf("%s: ACPI: unable to allocate IRQ resource %d\n",
    725 		    dev->dv_xname, res->ar_nirq);
    726 		res->ar_nirq++;
    727 		return;
    728 	}
    729 
    730 	ar->ar_index = res->ar_nirq++;
    731 	ar->ar_irq = irq;
    732 	ar->ar_type = type;
    733 
    734 	SIMPLEQ_INSERT_TAIL(&res->ar_irq, ar, ar_list);
    735 }
    736 
    737 static void
    738 acpi_res_parse_drq(struct device *dev, void *context, uint32_t drq)
    739 {
    740 	struct acpi_resources *res = context;
    741 	struct acpi_drq *ar;
    742 
    743 	ar = AcpiOsAllocate(sizeof(*ar));
    744 	if (ar == NULL) {
    745 		printf("%s: ACPI: unable to allocate DRQ resource %d\n",
    746 		    dev->dv_xname, res->ar_ndrq);
    747 		res->ar_ndrq++;
    748 		return;
    749 	}
    750 
    751 	ar->ar_index = res->ar_ndrq++;
    752 	ar->ar_drq = drq;
    753 
    754 	SIMPLEQ_INSERT_TAIL(&res->ar_drq, ar, ar_list);
    755 }
    756 
    757 static void
    758 acpi_res_parse_start_dep(struct device *dev, void *context, int preference)
    759 {
    760 
    761 	printf("%s: ACPI: dependant functions not supported\n",
    762 	    dev->dv_xname);
    763 }
    764 
    765 static void
    766 acpi_res_parse_end_dep(struct device *dev, void *context)
    767 {
    768 
    769 	/* Nothing to do. */
    770 }
    771