drivers/acpi/resources/rsmisc.c - linux/kernel/git/torvalds/linux - Git at Google

 /*******************************************************************************
  *
  * Module Name: rsmisc - Miscellaneous resource descriptors
  *
  ******************************************************************************/

 /*
  * Copyright (C) 2000 - 2007, R. Byron Moore
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions, and the following disclaimer,
  *    without modification.
  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  *    substantially similar to the "NO WARRANTY" disclaimer below
  *    ("Disclaimer") and any redistribution must be conditioned upon
  *    including a substantially similar Disclaimer requirement for further
  *    binary redistribution.
  * 3. Neither the names of the above-listed copyright holders nor the names
  *    of any contributors may be used to endorse or promote products derived
  *    from this software without specific prior written permission.
  *
  * Alternatively, this software may be distributed under the terms of the
  * GNU General Public License ("GPL") version 2 as published by the Free
  * Software Foundation.
  *
  * NO WARRANTY
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGES.
  */

 #include <acpi/acpi.h>
 #include <acpi/acresrc.h>

 #define _COMPONENT          ACPI_RESOURCES
 ACPI_MODULE_NAME("rsmisc")
 #define INIT_RESOURCE_TYPE(i)       i->resource_offset
 #define INIT_RESOURCE_LENGTH(i)     i->aml_offset
 #define INIT_TABLE_LENGTH(i)        i->value
 #define COMPARE_OPCODE(i)           i->resource_offset
 #define COMPARE_TARGET(i)           i->aml_offset
 #define COMPARE_VALUE(i)            i->value
 /*******************************************************************************
  *
  * FUNCTION:    acpi_rs_convert_aml_to_resource
  *
  * PARAMETERS:  Resource            - Pointer to the resource descriptor
  *              Aml                 - Where the AML descriptor is returned
  *              Info                - Pointer to appropriate conversion table
  *
  * RETURN:      Status
  *
  * DESCRIPTION: Convert an external AML resource descriptor to the corresponding
  *              internal resource descriptor
  *
  ******************************************************************************/
 acpi_status
 acpi_rs_convert_aml_to_resource(struct acpi_resource *resource,
 				union aml_resource *aml,
 				struct acpi_rsconvert_info *info)
 {
 	acpi_rs_length aml_resource_length;
 	void *source;
 	void *destination;
 	char *target;
 	u8 count;
 	u8 flags_mode = FALSE;
 	u16 item_count = 0;
 	u16 temp16 = 0;

 	ACPI_FUNCTION_TRACE(rs_convert_aml_to_resource);

 	if (((acpi_native_uint) resource) & 0x3) {

 		/* Each internal resource struct is expected to be 32-bit aligned */

 		ACPI_WARNING((AE_INFO,
 			      "Misaligned resource pointer (get): %p Type %2.2X Len %X",
 			      resource, resource->type, resource->length));
 	}

 	/* Extract the resource Length field (does not include header length) */

 	aml_resource_length = acpi_ut_get_resource_length(aml);

 	/*
 	 * First table entry must be ACPI_RSC_INITxxx and must contain the
 	 * table length (# of table entries)
 	 */
 	count = INIT_TABLE_LENGTH(info);

 	while (count) {
 		/*
 		 * Source is the external AML byte stream buffer,
 		 * destination is the internal resource descriptor
 		 */
 		source = ACPI_ADD_PTR(void, aml, info->aml_offset);
 		destination =
 		    ACPI_ADD_PTR(void, resource, info->resource_offset);

 		switch (info->opcode) {
 		case ACPI_RSC_INITGET:
 			/*
 			 * Get the resource type and the initial (minimum) length
 			 */
 			ACPI_MEMSET(resource, 0, INIT_RESOURCE_LENGTH(info));
 			resource->type = INIT_RESOURCE_TYPE(info);
 			resource->length = INIT_RESOURCE_LENGTH(info);
 			break;

 		case ACPI_RSC_INITSET:
 			break;

 		case ACPI_RSC_FLAGINIT:

 			flags_mode = TRUE;
 			break;

 		case ACPI_RSC_1BITFLAG:
 			/*
 			 * Mask and shift the flag bit
 			 */
 			ACPI_SET8(destination) = (u8)
 			    ((ACPI_GET8(source) >> info->value) & 0x01);
 			break;

 		case ACPI_RSC_2BITFLAG:
 			/*
 			 * Mask and shift the flag bits
 			 */
 			ACPI_SET8(destination) = (u8)
 			    ((ACPI_GET8(source) >> info->value) & 0x03);
 			break;

 		case ACPI_RSC_COUNT:

 			item_count = ACPI_GET8(source);
 			ACPI_SET8(destination) = (u8) item_count;

 			resource->length = resource->length +
 			    (info->value * (item_count - 1));
 			break;

 		case ACPI_RSC_COUNT16:

 			item_count = aml_resource_length;
 			ACPI_SET16(destination) = item_count;

 			resource->length = resource->length +
 			    (info->value * (item_count - 1));
 			break;

 		case ACPI_RSC_LENGTH:

 			resource->length = resource->length + info->value;
 			break;

 		case ACPI_RSC_MOVE8:
 		case ACPI_RSC_MOVE16:
 		case ACPI_RSC_MOVE32:
 		case ACPI_RSC_MOVE64:
 			/*
 			 * Raw data move. Use the Info value field unless item_count has
 			 * been previously initialized via a COUNT opcode
 			 */
 			if (info->value) {
 				item_count = info->value;
 			}
 			acpi_rs_move_data(destination, source, item_count,
 					  info->opcode);
 			break;

 		case ACPI_RSC_SET8:

 			ACPI_MEMSET(destination, info->aml_offset, info->value);
 			break;

 		case ACPI_RSC_DATA8:

 			target = ACPI_ADD_PTR(char, resource, info->value);
 			ACPI_MEMCPY(destination, source, ACPI_GET16(target));
 			break;

 		case ACPI_RSC_ADDRESS:
 			/*
 			 * Common handler for address descriptor flags
 			 */
 			if (!acpi_rs_get_address_common(resource, aml)) {
 				return_ACPI_STATUS
 				    (AE_AML_INVALID_RESOURCE_TYPE);
 			}
 			break;

 		case ACPI_RSC_SOURCE:
 			/*
 			 * Optional resource_source (Index and String)
 			 */
 			resource->length +=
 			    acpi_rs_get_resource_source(aml_resource_length,
 							info->value,
 							destination, aml, NULL);
 			break;

 		case ACPI_RSC_SOURCEX:
 			/*
 			 * Optional resource_source (Index and String). This is the more
 			 * complicated case used by the Interrupt() macro
 			 */
 			target =
 			    ACPI_ADD_PTR(char, resource,
 					 info->aml_offset + (item_count * 4));

 			resource->length +=
 			    acpi_rs_get_resource_source(aml_resource_length,
 							(acpi_rs_length) (((item_count - 1) * sizeof(u32)) + info->value), destination, aml, target);
 			break;

 		case ACPI_RSC_BITMASK:
 			/*
 			 * 8-bit encoded bitmask (DMA macro)
 			 */
 			item_count =
 			    acpi_rs_decode_bitmask(ACPI_GET8(source),
 						   destination);
 			if (item_count) {
 				resource->length += (item_count - 1);
 			}

 			target = ACPI_ADD_PTR(char, resource, info->value);
 			ACPI_SET8(target) = (u8) item_count;
 			break;

 		case ACPI_RSC_BITMASK16:
 			/*
 			 * 16-bit encoded bitmask (IRQ macro)
 			 */
 			ACPI_MOVE_16_TO_16(&temp16, source);

 			item_count =
 			    acpi_rs_decode_bitmask(temp16, destination);
 			if (item_count) {
 				resource->length += (item_count - 1);
 			}

 			target = ACPI_ADD_PTR(char, resource, info->value);
 			ACPI_SET8(target) = (u8) item_count;
 			break;

 		case ACPI_RSC_EXIT_NE:
 			/*
 			 * Control - Exit conversion if not equal
 			 */
 			switch (info->resource_offset) {
 			case ACPI_RSC_COMPARE_AML_LENGTH:
 				if (aml_resource_length != info->value) {
 					goto exit;
 				}
 				break;

 			case ACPI_RSC_COMPARE_VALUE:
 				if (ACPI_GET8(source) != info->value) {
 					goto exit;
 				}
 				break;

 			default:

 				ACPI_ERROR((AE_INFO,
 					    "Invalid conversion sub-opcode"));
 				return_ACPI_STATUS(AE_BAD_PARAMETER);
 			}
 			break;

 		default:

 			ACPI_ERROR((AE_INFO, "Invalid conversion opcode"));
 			return_ACPI_STATUS(AE_BAD_PARAMETER);
 		}

 		count--;
 		info++;
 	}

       exit:
 	if (!flags_mode) {

 		/* Round the resource struct length up to the next boundary (32 or 64) */

 		resource->length =
 		    (u32) ACPI_ROUND_UP_TO_NATIVE_WORD(resource->length);
 	}
 	return_ACPI_STATUS(AE_OK);
 }

 /*******************************************************************************
  *
  * FUNCTION:    acpi_rs_convert_resource_to_aml
  *
  * PARAMETERS:  Resource            - Pointer to the resource descriptor
  *              Aml                 - Where the AML descriptor is returned
  *              Info                - Pointer to appropriate conversion table
  *
  * RETURN:      Status
  *
  * DESCRIPTION: Convert an internal resource descriptor to the corresponding
  *              external AML resource descriptor.
  *
  ******************************************************************************/

 acpi_status
 acpi_rs_convert_resource_to_aml(struct acpi_resource *resource,
 				union aml_resource *aml,
 				struct acpi_rsconvert_info *info)
 {
 	void *source = NULL;
 	void *destination;
 	acpi_rsdesc_size aml_length = 0;
 	u8 count;
 	u16 temp16 = 0;
 	u16 item_count = 0;

 	ACPI_FUNCTION_TRACE(rs_convert_resource_to_aml);

 	/*
 	 * First table entry must be ACPI_RSC_INITxxx and must contain the
 	 * table length (# of table entries)
 	 */
 	count = INIT_TABLE_LENGTH(info);

 	while (count) {
 		/*
 		 * Source is the internal resource descriptor,
 		 * destination is the external AML byte stream buffer
 		 */
 		source = ACPI_ADD_PTR(void, resource, info->resource_offset);
 		destination = ACPI_ADD_PTR(void, aml, info->aml_offset);

 		switch (info->opcode) {
 		case ACPI_RSC_INITSET:

 			ACPI_MEMSET(aml, 0, INIT_RESOURCE_LENGTH(info));
 			aml_length = INIT_RESOURCE_LENGTH(info);
 			acpi_rs_set_resource_header(INIT_RESOURCE_TYPE(info),
 						    aml_length, aml);
 			break;

 		case ACPI_RSC_INITGET:
 			break;

 		case ACPI_RSC_FLAGINIT:
 			/*
 			 * Clear the flag byte
 			 */
 			ACPI_SET8(destination) = 0;
 			break;

 		case ACPI_RSC_1BITFLAG:
 			/*
 			 * Mask and shift the flag bit
 			 */
 			ACPI_SET8(destination) |= (u8)
 			    ((ACPI_GET8(source) & 0x01) << info->value);
 			break;

 		case ACPI_RSC_2BITFLAG:
 			/*
 			 * Mask and shift the flag bits
 			 */
 			ACPI_SET8(destination) |= (u8)
 			    ((ACPI_GET8(source) & 0x03) << info->value);
 			break;

 		case ACPI_RSC_COUNT:

 			item_count = ACPI_GET8(source);
 			ACPI_SET8(destination) = (u8) item_count;

 			aml_length =
 			    (u16) (aml_length +
 				   (info->value * (item_count - 1)));
 			break;

 		case ACPI_RSC_COUNT16:

 			item_count = ACPI_GET16(source);
 			aml_length = (u16) (aml_length + item_count);
 			acpi_rs_set_resource_length(aml_length, aml);
 			break;

 		case ACPI_RSC_LENGTH:

 			acpi_rs_set_resource_length(info->value, aml);
 			break;

 		case ACPI_RSC_MOVE8:
 		case ACPI_RSC_MOVE16:
 		case ACPI_RSC_MOVE32:
 		case ACPI_RSC_MOVE64:

 			if (info->value) {
 				item_count = info->value;
 			}
 			acpi_rs_move_data(destination, source, item_count,
 					  info->opcode);
 			break;

 		case ACPI_RSC_ADDRESS:

 			/* Set the Resource Type, General Flags, and Type-Specific Flags */

 			acpi_rs_set_address_common(aml, resource);
 			break;

 		case ACPI_RSC_SOURCEX:
 			/*
 			 * Optional resource_source (Index and String)
 			 */
 			aml_length =
 			    acpi_rs_set_resource_source(aml, (acpi_rs_length)
 							aml_length, source);
 			acpi_rs_set_resource_length(aml_length, aml);
 			break;

 		case ACPI_RSC_SOURCE:
 			/*
 			 * Optional resource_source (Index and String). This is the more
 			 * complicated case used by the Interrupt() macro
 			 */
 			aml_length =
 			    acpi_rs_set_resource_source(aml, info->value,
 							source);
 			acpi_rs_set_resource_length(aml_length, aml);
 			break;

 		case ACPI_RSC_BITMASK:
 			/*
 			 * 8-bit encoded bitmask (DMA macro)
 			 */
 			ACPI_SET8(destination) = (u8)
 			    acpi_rs_encode_bitmask(source,
 						   *ACPI_ADD_PTR(u8, resource,
 								 info->value));
 			break;

 		case ACPI_RSC_BITMASK16:
 			/*
 			 * 16-bit encoded bitmask (IRQ macro)
 			 */
 			temp16 = acpi_rs_encode_bitmask(source,
 							*ACPI_ADD_PTR(u8,
 								      resource,
 								      info->
 								      value));
 			ACPI_MOVE_16_TO_16(destination, &temp16);
 			break;

 		case ACPI_RSC_EXIT_LE:
 			/*
 			 * Control - Exit conversion if less than or equal
 			 */
 			if (item_count <= info->value) {
 				goto exit;
 			}
 			break;

 		case ACPI_RSC_EXIT_NE:
 			/*
 			 * Control - Exit conversion if not equal
 			 */
 			switch (COMPARE_OPCODE(info)) {
 			case ACPI_RSC_COMPARE_VALUE:

 				if (*ACPI_ADD_PTR(u8, resource,
 						  COMPARE_TARGET(info)) !=
 				    COMPARE_VALUE(info)) {
 					goto exit;
 				}
 				break;

 			default:

 				ACPI_ERROR((AE_INFO,
 					    "Invalid conversion sub-opcode"));
 				return_ACPI_STATUS(AE_BAD_PARAMETER);
 			}
 			break;

 		default:

 			ACPI_ERROR((AE_INFO, "Invalid conversion opcode"));
 			return_ACPI_STATUS(AE_BAD_PARAMETER);
 		}

 		count--;
 		info++;
 	}

       exit:
 	return_ACPI_STATUS(AE_OK);
 }

 #if 0
 /* Previous resource validations */

 if (aml->ext_address64.revision_iD != AML_RESOURCE_EXTENDED_ADDRESS_REVISION) {
 	return_ACPI_STATUS(AE_SUPPORT);
 }

 if (resource->data.start_dpf.performance_robustness >= 3) {
 	return_ACPI_STATUS(AE_AML_BAD_RESOURCE_VALUE);
 }

 if (((aml->irq.flags & 0x09) == 0x00) || ((aml->irq.flags & 0x09) == 0x09)) {
 	/*
 	 * Only [active_high, edge_sensitive] or [active_low, level_sensitive]
 	 * polarity/trigger interrupts are allowed (ACPI spec, section
 	 * "IRQ Format"), so 0x00 and 0x09 are illegal.
 	 */
 	ACPI_ERROR((AE_INFO,
 		    "Invalid interrupt polarity/trigger in resource list, %X",
 		    aml->irq.flags));
 	return_ACPI_STATUS(AE_BAD_DATA);
 }

 resource->data.extended_irq.interrupt_count = temp8;
 if (temp8 < 1) {

 	/* Must have at least one IRQ */

 	return_ACPI_STATUS(AE_AML_BAD_RESOURCE_LENGTH);
 }

 if (resource->data.dma.transfer == 0x03) {
 	ACPI_ERROR((AE_INFO, "Invalid DMA.Transfer preference (3)"));
 	return_ACPI_STATUS(AE_BAD_DATA);
 }
 #endif
	/*******************************************************************************
	*
	* Module Name: rsmisc - Miscellaneous resource descriptors
	*
	******************************************************************************/

	/*
	* Copyright (C) 2000 - 2007, R. Byron Moore
	* All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions
	* are met:
	* 1. Redistributions of source code must retain the above copyright
	* notice, this list of conditions, and the following disclaimer,
	* without modification.
	* 2. Redistributions in binary form must reproduce at minimum a disclaimer
	* substantially similar to the "NO WARRANTY" disclaimer below
	* ("Disclaimer") and any redistribution must be conditioned upon
	* including a substantially similar Disclaimer requirement for further
	* binary redistribution.
	* 3. Neither the names of the above-listed copyright holders nor the names
	* of any contributors may be used to endorse or promote products derived
	* from this software without specific prior written permission.
	*
	* Alternatively, this software may be distributed under the terms of the
	* GNU General Public License ("GPL") version 2 as published by the Free
	* Software Foundation.
	*
	* NO WARRANTY
	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
	* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
	* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
	* POSSIBILITY OF SUCH DAMAGES.
	*/

	#include <acpi/acpi.h>
	#include <acpi/acresrc.h>

	#define _COMPONENT ACPI_RESOURCES
	ACPI_MODULE_NAME("rsmisc")
	#define INIT_RESOURCE_TYPE(i) i->resource_offset
	#define INIT_RESOURCE_LENGTH(i) i->aml_offset
	#define INIT_TABLE_LENGTH(i) i->value
	#define COMPARE_OPCODE(i) i->resource_offset
	#define COMPARE_TARGET(i) i->aml_offset
	#define COMPARE_VALUE(i) i->value
	/*******************************************************************************
	*
	* FUNCTION: acpi_rs_convert_aml_to_resource
	*
	* PARAMETERS: Resource - Pointer to the resource descriptor
	* Aml - Where the AML descriptor is returned
	* Info - Pointer to appropriate conversion table
	*
	* RETURN: Status
	*
	* DESCRIPTION: Convert an external AML resource descriptor to the corresponding
	* internal resource descriptor
	*
	******************************************************************************/
	acpi_status
	acpi_rs_convert_aml_to_resource(struct acpi_resource *resource,
	union aml_resource *aml,
	struct acpi_rsconvert_info *info)
	{
	acpi_rs_length aml_resource_length;
	void *source;
	void *destination;
	char *target;
	u8 count;
	u8 flags_mode = FALSE;
	u16 item_count = 0;
	u16 temp16 = 0;

	ACPI_FUNCTION_TRACE(rs_convert_aml_to_resource);

	if (((acpi_native_uint) resource) & 0x3) {

	/* Each internal resource struct is expected to be 32-bit aligned */

	ACPI_WARNING((AE_INFO,
	"Misaligned resource pointer (get): %p Type %2.2X Len %X",
	resource, resource->type, resource->length));
	}

	/* Extract the resource Length field (does not include header length) */

	aml_resource_length = acpi_ut_get_resource_length(aml);

	/*
	* First table entry must be ACPI_RSC_INITxxx and must contain the
	* table length (# of table entries)
	*/
	count = INIT_TABLE_LENGTH(info);

	while (count) {
	/*
	* Source is the external AML byte stream buffer,
	* destination is the internal resource descriptor
	*/
	source = ACPI_ADD_PTR(void, aml, info->aml_offset);
	destination =
	ACPI_ADD_PTR(void, resource, info->resource_offset);

	switch (info->opcode) {
	case ACPI_RSC_INITGET:
	/*
	* Get the resource type and the initial (minimum) length
	*/
	ACPI_MEMSET(resource, 0, INIT_RESOURCE_LENGTH(info));
	resource->type = INIT_RESOURCE_TYPE(info);
	resource->length = INIT_RESOURCE_LENGTH(info);
	break;

	case ACPI_RSC_INITSET:
	break;

	case ACPI_RSC_FLAGINIT:

	flags_mode = TRUE;
	break;

	case ACPI_RSC_1BITFLAG:
	/*
	* Mask and shift the flag bit
	*/
	ACPI_SET8(destination) = (u8)
	((ACPI_GET8(source) >> info->value) & 0x01);
	break;

	case ACPI_RSC_2BITFLAG:
	/*
	* Mask and shift the flag bits
	*/
	ACPI_SET8(destination) = (u8)
	((ACPI_GET8(source) >> info->value) & 0x03);
	break;

	case ACPI_RSC_COUNT:

	item_count = ACPI_GET8(source);
	ACPI_SET8(destination) = (u8) item_count;

	resource->length = resource->length +
	(info->value * (item_count - 1));
	break;

	case ACPI_RSC_COUNT16:

	item_count = aml_resource_length;
	ACPI_SET16(destination) = item_count;

	resource->length = resource->length +
	(info->value * (item_count - 1));
	break;

	case ACPI_RSC_LENGTH:

	resource->length = resource->length + info->value;
	break;

	case ACPI_RSC_MOVE8:
	case ACPI_RSC_MOVE16:
	case ACPI_RSC_MOVE32:
	case ACPI_RSC_MOVE64:
	/*
	* Raw data move. Use the Info value field unless item_count has
	* been previously initialized via a COUNT opcode
	*/
	if (info->value) {
	item_count = info->value;
	}
	acpi_rs_move_data(destination, source, item_count,
	info->opcode);
	break;

	case ACPI_RSC_SET8:

	ACPI_MEMSET(destination, info->aml_offset, info->value);
	break;

	case ACPI_RSC_DATA8:

	target = ACPI_ADD_PTR(char, resource, info->value);
	ACPI_MEMCPY(destination, source, ACPI_GET16(target));
	break;

	case ACPI_RSC_ADDRESS:
	/*
	* Common handler for address descriptor flags
	*/
	if (!acpi_rs_get_address_common(resource, aml)) {
	return_ACPI_STATUS
	(AE_AML_INVALID_RESOURCE_TYPE);
	}
	break;

	case ACPI_RSC_SOURCE:
	/*
	* Optional resource_source (Index and String)
	*/
	resource->length +=
	acpi_rs_get_resource_source(aml_resource_length,
	info->value,
	destination, aml, NULL);
	break;

	case ACPI_RSC_SOURCEX:
	/*
	* Optional resource_source (Index and String). This is the more
	* complicated case used by the Interrupt() macro
	*/
	target =
	ACPI_ADD_PTR(char, resource,
	info->aml_offset + (item_count * 4));

	resource->length +=
	acpi_rs_get_resource_source(aml_resource_length,
	(acpi_rs_length) (((item_count - 1) * sizeof(u32)) + info->value), destination, aml, target);
	break;

	case ACPI_RSC_BITMASK:
	/*
	* 8-bit encoded bitmask (DMA macro)
	*/
	item_count =
	acpi_rs_decode_bitmask(ACPI_GET8(source),
	destination);
	if (item_count) {
	resource->length += (item_count - 1);
	}

	target = ACPI_ADD_PTR(char, resource, info->value);
	ACPI_SET8(target) = (u8) item_count;
	break;

	case ACPI_RSC_BITMASK16:
	/*
	* 16-bit encoded bitmask (IRQ macro)
	*/
	ACPI_MOVE_16_TO_16(&temp16, source);

	item_count =
	acpi_rs_decode_bitmask(temp16, destination);
	if (item_count) {
	resource->length += (item_count - 1);
	}

	target = ACPI_ADD_PTR(char, resource, info->value);
	ACPI_SET8(target) = (u8) item_count;
	break;

	case ACPI_RSC_EXIT_NE:
	/*
	* Control - Exit conversion if not equal
	*/
	switch (info->resource_offset) {
	case ACPI_RSC_COMPARE_AML_LENGTH:
	if (aml_resource_length != info->value) {
	goto exit;
	}
	break;

	case ACPI_RSC_COMPARE_VALUE:
	if (ACPI_GET8(source) != info->value) {
	goto exit;
	}
	break;

	default:

	ACPI_ERROR((AE_INFO,
	"Invalid conversion sub-opcode"));
	return_ACPI_STATUS(AE_BAD_PARAMETER);
	}
	break;

	default:

	ACPI_ERROR((AE_INFO, "Invalid conversion opcode"));
	return_ACPI_STATUS(AE_BAD_PARAMETER);
	}

	count--;
	info++;
	}

	exit:
	if (!flags_mode) {

	/* Round the resource struct length up to the next boundary (32 or 64) */

	resource->length =
	(u32) ACPI_ROUND_UP_TO_NATIVE_WORD(resource->length);
	}
	return_ACPI_STATUS(AE_OK);
	}

	/*******************************************************************************
	*
	* FUNCTION: acpi_rs_convert_resource_to_aml
	*
	* PARAMETERS: Resource - Pointer to the resource descriptor
	* Aml - Where the AML descriptor is returned
	* Info - Pointer to appropriate conversion table
	*
	* RETURN: Status
	*
	* DESCRIPTION: Convert an internal resource descriptor to the corresponding
	* external AML resource descriptor.
	*
	******************************************************************************/

	acpi_status
	acpi_rs_convert_resource_to_aml(struct acpi_resource *resource,
	union aml_resource *aml,
	struct acpi_rsconvert_info *info)
	{
	void *source = NULL;
	void *destination;
	acpi_rsdesc_size aml_length = 0;
	u8 count;
	u16 temp16 = 0;
	u16 item_count = 0;

	ACPI_FUNCTION_TRACE(rs_convert_resource_to_aml);

	/*
	* First table entry must be ACPI_RSC_INITxxx and must contain the
	* table length (# of table entries)
	*/
	count = INIT_TABLE_LENGTH(info);

	while (count) {
	/*
	* Source is the internal resource descriptor,
	* destination is the external AML byte stream buffer
	*/
	source = ACPI_ADD_PTR(void, resource, info->resource_offset);
	destination = ACPI_ADD_PTR(void, aml, info->aml_offset);

	switch (info->opcode) {
	case ACPI_RSC_INITSET:

	ACPI_MEMSET(aml, 0, INIT_RESOURCE_LENGTH(info));
	aml_length = INIT_RESOURCE_LENGTH(info);
	acpi_rs_set_resource_header(INIT_RESOURCE_TYPE(info),
	aml_length, aml);
	break;

	case ACPI_RSC_INITGET:
	break;

	case ACPI_RSC_FLAGINIT:
	/*
	* Clear the flag byte
	*/
	ACPI_SET8(destination) = 0;
	break;

	case ACPI_RSC_1BITFLAG:
	/*
	* Mask and shift the flag bit
	*/
	ACPI_SET8(destination) \|= (u8)
	((ACPI_GET8(source) & 0x01) << info->value);
	break;

	case ACPI_RSC_2BITFLAG:
	/*
	* Mask and shift the flag bits
	*/
	ACPI_SET8(destination) \|= (u8)
	((ACPI_GET8(source) & 0x03) << info->value);
	break;

	case ACPI_RSC_COUNT:

	item_count = ACPI_GET8(source);
	ACPI_SET8(destination) = (u8) item_count;

	aml_length =
	(u16) (aml_length +
	(info->value * (item_count - 1)));
	break;

	case ACPI_RSC_COUNT16:

	item_count = ACPI_GET16(source);
	aml_length = (u16) (aml_length + item_count);
	acpi_rs_set_resource_length(aml_length, aml);
	break;

	case ACPI_RSC_LENGTH:

	acpi_rs_set_resource_length(info->value, aml);
	break;

	case ACPI_RSC_MOVE8:
	case ACPI_RSC_MOVE16:
	case ACPI_RSC_MOVE32:
	case ACPI_RSC_MOVE64:

	if (info->value) {
	item_count = info->value;
	}
	acpi_rs_move_data(destination, source, item_count,
	info->opcode);
	break;

	case ACPI_RSC_ADDRESS:

	/* Set the Resource Type, General Flags, and Type-Specific Flags */

	acpi_rs_set_address_common(aml, resource);
	break;

	case ACPI_RSC_SOURCEX:
	/*
	* Optional resource_source (Index and String)
	*/
	aml_length =
	acpi_rs_set_resource_source(aml, (acpi_rs_length)
	aml_length, source);
	acpi_rs_set_resource_length(aml_length, aml);
	break;

	case ACPI_RSC_SOURCE:
	/*
	* Optional resource_source (Index and String). This is the more
	* complicated case used by the Interrupt() macro
	*/
	aml_length =
	acpi_rs_set_resource_source(aml, info->value,
	source);
	acpi_rs_set_resource_length(aml_length, aml);
	break;

	case ACPI_RSC_BITMASK:
	/*
	* 8-bit encoded bitmask (DMA macro)
	*/
	ACPI_SET8(destination) = (u8)
	acpi_rs_encode_bitmask(source,
	*ACPI_ADD_PTR(u8, resource,
	info->value));
	break;

	case ACPI_RSC_BITMASK16:
	/*
	* 16-bit encoded bitmask (IRQ macro)
	*/
	temp16 = acpi_rs_encode_bitmask(source,
	*ACPI_ADD_PTR(u8,
	resource,
	info->
	value));
	ACPI_MOVE_16_TO_16(destination, &temp16);
	break;

	case ACPI_RSC_EXIT_LE:
	/*
	* Control - Exit conversion if less than or equal
	*/
	if (item_count <= info->value) {
	goto exit;
	}
	break;

	case ACPI_RSC_EXIT_NE:
	/*
	* Control - Exit conversion if not equal
	*/
	switch (COMPARE_OPCODE(info)) {
	case ACPI_RSC_COMPARE_VALUE:

	if (*ACPI_ADD_PTR(u8, resource,
	COMPARE_TARGET(info)) !=
	COMPARE_VALUE(info)) {
	goto exit;
	}
	break;

	default:

	ACPI_ERROR((AE_INFO,
	"Invalid conversion sub-opcode"));
	return_ACPI_STATUS(AE_BAD_PARAMETER);
	}
	break;

	default:

	ACPI_ERROR((AE_INFO, "Invalid conversion opcode"));
	return_ACPI_STATUS(AE_BAD_PARAMETER);
	}

	count--;
	info++;
	}

	exit:
	return_ACPI_STATUS(AE_OK);
	}

	#if 0
	/* Previous resource validations */

	if (aml->ext_address64.revision_iD != AML_RESOURCE_EXTENDED_ADDRESS_REVISION) {
	return_ACPI_STATUS(AE_SUPPORT);
	}

	if (resource->data.start_dpf.performance_robustness >= 3) {
	return_ACPI_STATUS(AE_AML_BAD_RESOURCE_VALUE);
	}

	if (((aml->irq.flags & 0x09) == 0x00) \|\| ((aml->irq.flags & 0x09) == 0x09)) {
	/*
	* Only [active_high, edge_sensitive] or [active_low, level_sensitive]
	* polarity/trigger interrupts are allowed (ACPI spec, section
	* "IRQ Format"), so 0x00 and 0x09 are illegal.
	*/
	ACPI_ERROR((AE_INFO,
	"Invalid interrupt polarity/trigger in resource list, %X",
	aml->irq.flags));
	return_ACPI_STATUS(AE_BAD_DATA);
	}

	resource->data.extended_irq.interrupt_count = temp8;
	if (temp8 < 1) {

	/* Must have at least one IRQ */

	return_ACPI_STATUS(AE_AML_BAD_RESOURCE_LENGTH);
	}

	if (resource->data.dma.transfer == 0x03) {
	ACPI_ERROR((AE_INFO, "Invalid DMA.Transfer preference (3)"));
	return_ACPI_STATUS(AE_BAD_DATA);
	}
	#endif