drivers/acpi/acpica/dbconvert.c - linux-mtk - Git at Google

 // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
 /*******************************************************************************
  *
  * Module Name: dbconvert - debugger miscellaneous conversion routines
  *
  ******************************************************************************/

 #include <acpi/acpi.h>
 #include "accommon.h"
 #include "acdebug.h"

 #define _COMPONENT          ACPI_CA_DEBUGGER
 ACPI_MODULE_NAME("dbconvert")

 #define DB_DEFAULT_PKG_ELEMENTS     33
 /*******************************************************************************
  *
  * FUNCTION:    acpi_db_hex_char_to_value
  *
  * PARAMETERS:  hex_char            - Ascii Hex digit, 0-9|a-f|A-F
  *              return_value        - Where the converted value is returned
  *
  * RETURN:      Status
  *
  * DESCRIPTION: Convert a single hex character to a 4-bit number (0-16).
  *
  ******************************************************************************/
 acpi_status acpi_db_hex_char_to_value(int hex_char, u8 *return_value)
 {
 	u8 value;

 	/* Digit must be ascii [0-9a-fA-F] */

 	if (!isxdigit(hex_char)) {
 		return (AE_BAD_HEX_CONSTANT);
 	}

 	if (hex_char <= 0x39) {
 		value = (u8)(hex_char - 0x30);
 	} else {
 		value = (u8)(toupper(hex_char) - 0x37);
 	}

 	*return_value = value;
 	return (AE_OK);
 }

 /*******************************************************************************
  *
  * FUNCTION:    acpi_db_hex_byte_to_binary
  *
  * PARAMETERS:  hex_byte            - Double hex digit (0x00 - 0xFF) in format:
  *                                    hi_byte then lo_byte.
  *              return_value        - Where the converted value is returned
  *
  * RETURN:      Status
  *
  * DESCRIPTION: Convert two hex characters to an 8 bit number (0 - 255).
  *
  ******************************************************************************/

 static acpi_status acpi_db_hex_byte_to_binary(char *hex_byte, u8 *return_value)
 {
 	u8 local0;
 	u8 local1;
 	acpi_status status;

 	/* High byte */

 	status = acpi_db_hex_char_to_value(hex_byte[0], &local0);
 	if (ACPI_FAILURE(status)) {
 		return (status);
 	}

 	/* Low byte */

 	status = acpi_db_hex_char_to_value(hex_byte[1], &local1);
 	if (ACPI_FAILURE(status)) {
 		return (status);
 	}

 	*return_value = (u8)((local0 << 4) | local1);
 	return (AE_OK);
 }

 /*******************************************************************************
  *
  * FUNCTION:    acpi_db_convert_to_buffer
  *
  * PARAMETERS:  string              - Input string to be converted
  *              object              - Where the buffer object is returned
  *
  * RETURN:      Status
  *
  * DESCRIPTION: Convert a string to a buffer object. String is treated a list
  *              of buffer elements, each separated by a space or comma.
  *
  ******************************************************************************/

 static acpi_status
 acpi_db_convert_to_buffer(char *string, union acpi_object *object)
 {
 	u32 i;
 	u32 j;
 	u32 length;
 	u8 *buffer;
 	acpi_status status;

 	/* Generate the final buffer length */

 	for (i = 0, length = 0; string[i];) {
 		i += 2;
 		length++;

 		while (string[i] && ((string[i] == ',') || (string[i] == ' '))) {
 			i++;
 		}
 	}

 	buffer = ACPI_ALLOCATE(length);
 	if (!buffer) {
 		return (AE_NO_MEMORY);
 	}

 	/* Convert the command line bytes to the buffer */

 	for (i = 0, j = 0; string[i];) {
 		status = acpi_db_hex_byte_to_binary(&string[i], &buffer[j]);
 		if (ACPI_FAILURE(status)) {
 			ACPI_FREE(buffer);
 			return (status);
 		}

 		j++;
 		i += 2;
 		while (string[i] && ((string[i] == ',') || (string[i] == ' '))) {
 			i++;
 		}
 	}

 	object->type = ACPI_TYPE_BUFFER;
 	object->buffer.pointer = buffer;
 	object->buffer.length = length;
 	return (AE_OK);
 }

 /*******************************************************************************
  *
  * FUNCTION:    acpi_db_convert_to_package
  *
  * PARAMETERS:  string              - Input string to be converted
  *              object              - Where the package object is returned
  *
  * RETURN:      Status
  *
  * DESCRIPTION: Convert a string to a package object. Handles nested packages
  *              via recursion with acpi_db_convert_to_object.
  *
  ******************************************************************************/

 acpi_status acpi_db_convert_to_package(char *string, union acpi_object *object)
 {
 	char *this;
 	char *next;
 	u32 i;
 	acpi_object_type type;
 	union acpi_object *elements;
 	acpi_status status;

 	elements =
 	    ACPI_ALLOCATE_ZEROED(DB_DEFAULT_PKG_ELEMENTS *
 				 sizeof(union acpi_object));

 	this = string;
 	for (i = 0; i < (DB_DEFAULT_PKG_ELEMENTS - 1); i++) {
 		this = acpi_db_get_next_token(this, &next, &type);
 		if (!this) {
 			break;
 		}

 		/* Recursive call to convert each package element */

 		status = acpi_db_convert_to_object(type, this, &elements[i]);
 		if (ACPI_FAILURE(status)) {
 			acpi_db_delete_objects(i + 1, elements);
 			ACPI_FREE(elements);
 			return (status);
 		}

 		this = next;
 	}

 	object->type = ACPI_TYPE_PACKAGE;
 	object->package.count = i;
 	object->package.elements = elements;
 	return (AE_OK);
 }

 /*******************************************************************************
  *
  * FUNCTION:    acpi_db_convert_to_object
  *
  * PARAMETERS:  type                - Object type as determined by parser
  *              string              - Input string to be converted
  *              object              - Where the new object is returned
  *
  * RETURN:      Status
  *
  * DESCRIPTION: Convert a typed and tokenized string to a union acpi_object. Typing:
  *              1) String objects were surrounded by quotes.
  *              2) Buffer objects were surrounded by parentheses.
  *              3) Package objects were surrounded by brackets "[]".
  *              4) All standalone tokens are treated as integers.
  *
  ******************************************************************************/

 acpi_status
 acpi_db_convert_to_object(acpi_object_type type,
 			  char *string, union acpi_object *object)
 {
 	acpi_status status = AE_OK;

 	switch (type) {
 	case ACPI_TYPE_STRING:

 		object->type = ACPI_TYPE_STRING;
 		object->string.pointer = string;
 		object->string.length = (u32)strlen(string);
 		break;

 	case ACPI_TYPE_BUFFER:

 		status = acpi_db_convert_to_buffer(string, object);
 		break;

 	case ACPI_TYPE_PACKAGE:

 		status = acpi_db_convert_to_package(string, object);
 		break;

 	default:

 		object->type = ACPI_TYPE_INTEGER;
 		status = acpi_ut_strtoul64(string, &object->integer.value);
 		break;
 	}

 	return (status);
 }

 /*******************************************************************************
  *
  * FUNCTION:    acpi_db_encode_pld_buffer
  *
  * PARAMETERS:  pld_info            - _PLD buffer struct (Using local struct)
  *
  * RETURN:      Encode _PLD buffer suitable for return value from _PLD
  *
  * DESCRIPTION: Bit-packs a _PLD buffer struct. Used to test the _PLD macros
  *
  ******************************************************************************/

 u8 *acpi_db_encode_pld_buffer(struct acpi_pld_info *pld_info)
 {
 	u32 *buffer;
 	u32 dword;

 	buffer = ACPI_ALLOCATE_ZEROED(ACPI_PLD_BUFFER_SIZE);
 	if (!buffer) {
 		return (NULL);
 	}

 	/* First 32 bits */

 	dword = 0;
 	ACPI_PLD_SET_REVISION(&dword, pld_info->revision);
 	ACPI_PLD_SET_IGNORE_COLOR(&dword, pld_info->ignore_color);
 	ACPI_PLD_SET_RED(&dword, pld_info->red);
 	ACPI_PLD_SET_GREEN(&dword, pld_info->green);
 	ACPI_PLD_SET_BLUE(&dword, pld_info->blue);
 	ACPI_MOVE_32_TO_32(&buffer[0], &dword);

 	/* Second 32 bits */

 	dword = 0;
 	ACPI_PLD_SET_WIDTH(&dword, pld_info->width);
 	ACPI_PLD_SET_HEIGHT(&dword, pld_info->height);
 	ACPI_MOVE_32_TO_32(&buffer[1], &dword);

 	/* Third 32 bits */

 	dword = 0;
 	ACPI_PLD_SET_USER_VISIBLE(&dword, pld_info->user_visible);
 	ACPI_PLD_SET_DOCK(&dword, pld_info->dock);
 	ACPI_PLD_SET_LID(&dword, pld_info->lid);
 	ACPI_PLD_SET_PANEL(&dword, pld_info->panel);
 	ACPI_PLD_SET_VERTICAL(&dword, pld_info->vertical_position);
 	ACPI_PLD_SET_HORIZONTAL(&dword, pld_info->horizontal_position);
 	ACPI_PLD_SET_SHAPE(&dword, pld_info->shape);
 	ACPI_PLD_SET_ORIENTATION(&dword, pld_info->group_orientation);
 	ACPI_PLD_SET_TOKEN(&dword, pld_info->group_token);
 	ACPI_PLD_SET_POSITION(&dword, pld_info->group_position);
 	ACPI_PLD_SET_BAY(&dword, pld_info->bay);
 	ACPI_MOVE_32_TO_32(&buffer[2], &dword);

 	/* Fourth 32 bits */

 	dword = 0;
 	ACPI_PLD_SET_EJECTABLE(&dword, pld_info->ejectable);
 	ACPI_PLD_SET_OSPM_EJECT(&dword, pld_info->ospm_eject_required);
 	ACPI_PLD_SET_CABINET(&dword, pld_info->cabinet_number);
 	ACPI_PLD_SET_CARD_CAGE(&dword, pld_info->card_cage_number);
 	ACPI_PLD_SET_REFERENCE(&dword, pld_info->reference);
 	ACPI_PLD_SET_ROTATION(&dword, pld_info->rotation);
 	ACPI_PLD_SET_ORDER(&dword, pld_info->order);
 	ACPI_MOVE_32_TO_32(&buffer[3], &dword);

 	if (pld_info->revision >= 2) {

 		/* Fifth 32 bits */

 		dword = 0;
 		ACPI_PLD_SET_VERT_OFFSET(&dword, pld_info->vertical_offset);
 		ACPI_PLD_SET_HORIZ_OFFSET(&dword, pld_info->horizontal_offset);
 		ACPI_MOVE_32_TO_32(&buffer[4], &dword);
 	}

 	return (ACPI_CAST_PTR(u8, buffer));
 }

 /*******************************************************************************
  *
  * FUNCTION:    acpi_db_dump_pld_buffer
  *
  * PARAMETERS:  obj_desc            - Object returned from _PLD method
  *
  * RETURN:      None.
  *
  * DESCRIPTION: Dumps formatted contents of a _PLD return buffer.
  *
  ******************************************************************************/

 #define ACPI_PLD_OUTPUT     "%20s : %-6X\n"

 void acpi_db_dump_pld_buffer(union acpi_object *obj_desc)
 {
 	union acpi_object *buffer_desc;
 	struct acpi_pld_info *pld_info;
 	u8 *new_buffer;
 	acpi_status status;

 	/* Object must be of type Package with at least one Buffer element */

 	if (obj_desc->type != ACPI_TYPE_PACKAGE) {
 		return;
 	}

 	buffer_desc = &obj_desc->package.elements[0];
 	if (buffer_desc->type != ACPI_TYPE_BUFFER) {
 		return;
 	}

 	/* Convert _PLD buffer to local _PLD struct */

 	status = acpi_decode_pld_buffer(buffer_desc->buffer.pointer,
 					buffer_desc->buffer.length, &pld_info);
 	if (ACPI_FAILURE(status)) {
 		return;
 	}

 	/* Encode local _PLD struct back to a _PLD buffer */

 	new_buffer = acpi_db_encode_pld_buffer(pld_info);
 	if (!new_buffer) {
 		goto exit;
 	}

 	/* The two bit-packed buffers should match */

 	if (memcmp(new_buffer, buffer_desc->buffer.pointer,
 		   buffer_desc->buffer.length)) {
 		acpi_os_printf
 		    ("Converted _PLD buffer does not compare. New:\n");

 		acpi_ut_dump_buffer(new_buffer,
 				    buffer_desc->buffer.length, DB_BYTE_DISPLAY,
 				    0);
 	}

 	/* First 32-bit dword */

 	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Revision", pld_info->revision);
 	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_IgnoreColor",
 		       pld_info->ignore_color);
 	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Red", pld_info->red);
 	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Green", pld_info->green);
 	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Blue", pld_info->blue);

 	/* Second 32-bit dword */

 	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Width", pld_info->width);
 	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Height", pld_info->height);

 	/* Third 32-bit dword */

 	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_UserVisible",
 		       pld_info->user_visible);
 	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Dock", pld_info->dock);
 	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Lid", pld_info->lid);
 	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Panel", pld_info->panel);
 	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_VerticalPosition",
 		       pld_info->vertical_position);
 	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_HorizontalPosition",
 		       pld_info->horizontal_position);
 	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Shape", pld_info->shape);
 	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_GroupOrientation",
 		       pld_info->group_orientation);
 	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_GroupToken",
 		       pld_info->group_token);
 	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_GroupPosition",
 		       pld_info->group_position);
 	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Bay", pld_info->bay);

 	/* Fourth 32-bit dword */

 	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Ejectable", pld_info->ejectable);
 	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_EjectRequired",
 		       pld_info->ospm_eject_required);
 	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_CabinetNumber",
 		       pld_info->cabinet_number);
 	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_CardCageNumber",
 		       pld_info->card_cage_number);
 	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Reference", pld_info->reference);
 	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Rotation", pld_info->rotation);
 	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Order", pld_info->order);

 	/* Fifth 32-bit dword */

 	if (buffer_desc->buffer.length > 16) {
 		acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_VerticalOffset",
 			       pld_info->vertical_offset);
 		acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_HorizontalOffset",
 			       pld_info->horizontal_offset);
 	}

 	ACPI_FREE(new_buffer);
 exit:
 	ACPI_FREE(pld_info);
 }
	// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
	/*******************************************************************************
	*
	* Module Name: dbconvert - debugger miscellaneous conversion routines
	*
	******************************************************************************/

	#include <acpi/acpi.h>
	#include "accommon.h"
	#include "acdebug.h"

	#define _COMPONENT ACPI_CA_DEBUGGER
	ACPI_MODULE_NAME("dbconvert")

	#define DB_DEFAULT_PKG_ELEMENTS 33
	/*******************************************************************************
	*
	* FUNCTION: acpi_db_hex_char_to_value
	*
	* PARAMETERS: hex_char - Ascii Hex digit, 0-9\|a-f\|A-F
	* return_value - Where the converted value is returned
	*
	* RETURN: Status
	*
	* DESCRIPTION: Convert a single hex character to a 4-bit number (0-16).
	*
	******************************************************************************/
	acpi_status acpi_db_hex_char_to_value(int hex_char, u8 *return_value)
	{
	u8 value;

	/* Digit must be ascii [0-9a-fA-F] */

	if (!isxdigit(hex_char)) {
	return (AE_BAD_HEX_CONSTANT);
	}

	if (hex_char <= 0x39) {
	value = (u8)(hex_char - 0x30);
	} else {
	value = (u8)(toupper(hex_char) - 0x37);
	}

	*return_value = value;
	return (AE_OK);
	}

	/*******************************************************************************
	*
	* FUNCTION: acpi_db_hex_byte_to_binary
	*
	* PARAMETERS: hex_byte - Double hex digit (0x00 - 0xFF) in format:
	* hi_byte then lo_byte.
	* return_value - Where the converted value is returned
	*
	* RETURN: Status
	*
	* DESCRIPTION: Convert two hex characters to an 8 bit number (0 - 255).
	*
	******************************************************************************/

	static acpi_status acpi_db_hex_byte_to_binary(char hex_byte, u8 return_value)
	{
	u8 local0;
	u8 local1;
	acpi_status status;

	/* High byte */

	status = acpi_db_hex_char_to_value(hex_byte[0], &local0);
	if (ACPI_FAILURE(status)) {
	return (status);
	}

	/* Low byte */

	status = acpi_db_hex_char_to_value(hex_byte[1], &local1);
	if (ACPI_FAILURE(status)) {
	return (status);
	}

	*return_value = (u8)((local0 << 4) \| local1);
	return (AE_OK);
	}

	/*******************************************************************************
	*
	* FUNCTION: acpi_db_convert_to_buffer
	*
	* PARAMETERS: string - Input string to be converted
	* object - Where the buffer object is returned
	*
	* RETURN: Status
	*
	* DESCRIPTION: Convert a string to a buffer object. String is treated a list
	* of buffer elements, each separated by a space or comma.
	*
	******************************************************************************/

	static acpi_status
	acpi_db_convert_to_buffer(char string, union acpi_object object)
	{
	u32 i;
	u32 j;
	u32 length;
	u8 *buffer;
	acpi_status status;

	/* Generate the final buffer length */

	for (i = 0, length = 0; string[i];) {
	i += 2;
	length++;

	while (string[i] && ((string[i] == ',') \|\| (string[i] == ' '))) {
	i++;
	}
	}

	buffer = ACPI_ALLOCATE(length);
	if (!buffer) {
	return (AE_NO_MEMORY);
	}

	/* Convert the command line bytes to the buffer */

	for (i = 0, j = 0; string[i];) {
	status = acpi_db_hex_byte_to_binary(&string[i], &buffer[j]);
	if (ACPI_FAILURE(status)) {
	ACPI_FREE(buffer);
	return (status);
	}

	j++;
	i += 2;
	while (string[i] && ((string[i] == ',') \|\| (string[i] == ' '))) {
	i++;
	}
	}

	object->type = ACPI_TYPE_BUFFER;
	object->buffer.pointer = buffer;
	object->buffer.length = length;
	return (AE_OK);
	}

	/*******************************************************************************
	*
	* FUNCTION: acpi_db_convert_to_package
	*
	* PARAMETERS: string - Input string to be converted
	* object - Where the package object is returned
	*
	* RETURN: Status
	*
	* DESCRIPTION: Convert a string to a package object. Handles nested packages
	* via recursion with acpi_db_convert_to_object.
	*
	******************************************************************************/

	acpi_status acpi_db_convert_to_package(char string, union acpi_object object)
	{
	char *this;
	char *next;
	u32 i;
	acpi_object_type type;
	union acpi_object *elements;
	acpi_status status;

	elements =
	ACPI_ALLOCATE_ZEROED(DB_DEFAULT_PKG_ELEMENTS *
	sizeof(union acpi_object));

	this = string;
	for (i = 0; i < (DB_DEFAULT_PKG_ELEMENTS - 1); i++) {
	this = acpi_db_get_next_token(this, &next, &type);
	if (!this) {
	break;
	}

	/* Recursive call to convert each package element */

	status = acpi_db_convert_to_object(type, this, &elements[i]);
	if (ACPI_FAILURE(status)) {
	acpi_db_delete_objects(i + 1, elements);
	ACPI_FREE(elements);
	return (status);
	}

	this = next;
	}

	object->type = ACPI_TYPE_PACKAGE;
	object->package.count = i;
	object->package.elements = elements;
	return (AE_OK);
	}

	/*******************************************************************************
	*
	* FUNCTION: acpi_db_convert_to_object
	*
	* PARAMETERS: type - Object type as determined by parser
	* string - Input string to be converted
	* object - Where the new object is returned
	*
	* RETURN: Status
	*
	* DESCRIPTION: Convert a typed and tokenized string to a union acpi_object. Typing:
	* 1) String objects were surrounded by quotes.
	* 2) Buffer objects were surrounded by parentheses.
	* 3) Package objects were surrounded by brackets "[]".
	* 4) All standalone tokens are treated as integers.
	*
	******************************************************************************/

	acpi_status
	acpi_db_convert_to_object(acpi_object_type type,
	char string, union acpi_object object)
	{
	acpi_status status = AE_OK;

	switch (type) {
	case ACPI_TYPE_STRING:

	object->type = ACPI_TYPE_STRING;
	object->string.pointer = string;
	object->string.length = (u32)strlen(string);
	break;

	case ACPI_TYPE_BUFFER:

	status = acpi_db_convert_to_buffer(string, object);
	break;

	case ACPI_TYPE_PACKAGE:

	status = acpi_db_convert_to_package(string, object);
	break;

	default:

	object->type = ACPI_TYPE_INTEGER;
	status = acpi_ut_strtoul64(string, &object->integer.value);
	break;
	}

	return (status);
	}

	/*******************************************************************************
	*
	* FUNCTION: acpi_db_encode_pld_buffer
	*
	* PARAMETERS: pld_info - _PLD buffer struct (Using local struct)
	*
	* RETURN: Encode _PLD buffer suitable for return value from _PLD
	*
	* DESCRIPTION: Bit-packs a _PLD buffer struct. Used to test the _PLD macros
	*
	******************************************************************************/

	u8 acpi_db_encode_pld_buffer(struct acpi_pld_info pld_info)
	{
	u32 *buffer;
	u32 dword;

	buffer = ACPI_ALLOCATE_ZEROED(ACPI_PLD_BUFFER_SIZE);
	if (!buffer) {
	return (NULL);
	}

	/* First 32 bits */

	dword = 0;
	ACPI_PLD_SET_REVISION(&dword, pld_info->revision);
	ACPI_PLD_SET_IGNORE_COLOR(&dword, pld_info->ignore_color);
	ACPI_PLD_SET_RED(&dword, pld_info->red);
	ACPI_PLD_SET_GREEN(&dword, pld_info->green);
	ACPI_PLD_SET_BLUE(&dword, pld_info->blue);
	ACPI_MOVE_32_TO_32(&buffer[0], &dword);

	/* Second 32 bits */

	dword = 0;
	ACPI_PLD_SET_WIDTH(&dword, pld_info->width);
	ACPI_PLD_SET_HEIGHT(&dword, pld_info->height);
	ACPI_MOVE_32_TO_32(&buffer[1], &dword);

	/* Third 32 bits */

	dword = 0;
	ACPI_PLD_SET_USER_VISIBLE(&dword, pld_info->user_visible);
	ACPI_PLD_SET_DOCK(&dword, pld_info->dock);
	ACPI_PLD_SET_LID(&dword, pld_info->lid);
	ACPI_PLD_SET_PANEL(&dword, pld_info->panel);
	ACPI_PLD_SET_VERTICAL(&dword, pld_info->vertical_position);
	ACPI_PLD_SET_HORIZONTAL(&dword, pld_info->horizontal_position);
	ACPI_PLD_SET_SHAPE(&dword, pld_info->shape);
	ACPI_PLD_SET_ORIENTATION(&dword, pld_info->group_orientation);
	ACPI_PLD_SET_TOKEN(&dword, pld_info->group_token);
	ACPI_PLD_SET_POSITION(&dword, pld_info->group_position);
	ACPI_PLD_SET_BAY(&dword, pld_info->bay);
	ACPI_MOVE_32_TO_32(&buffer[2], &dword);

	/* Fourth 32 bits */

	dword = 0;
	ACPI_PLD_SET_EJECTABLE(&dword, pld_info->ejectable);
	ACPI_PLD_SET_OSPM_EJECT(&dword, pld_info->ospm_eject_required);
	ACPI_PLD_SET_CABINET(&dword, pld_info->cabinet_number);
	ACPI_PLD_SET_CARD_CAGE(&dword, pld_info->card_cage_number);
	ACPI_PLD_SET_REFERENCE(&dword, pld_info->reference);
	ACPI_PLD_SET_ROTATION(&dword, pld_info->rotation);
	ACPI_PLD_SET_ORDER(&dword, pld_info->order);
	ACPI_MOVE_32_TO_32(&buffer[3], &dword);

	if (pld_info->revision >= 2) {

	/* Fifth 32 bits */

	dword = 0;
	ACPI_PLD_SET_VERT_OFFSET(&dword, pld_info->vertical_offset);
	ACPI_PLD_SET_HORIZ_OFFSET(&dword, pld_info->horizontal_offset);
	ACPI_MOVE_32_TO_32(&buffer[4], &dword);
	}

	return (ACPI_CAST_PTR(u8, buffer));
	}

	/*******************************************************************************
	*
	* FUNCTION: acpi_db_dump_pld_buffer
	*
	* PARAMETERS: obj_desc - Object returned from _PLD method
	*
	* RETURN: None.
	*
	* DESCRIPTION: Dumps formatted contents of a _PLD return buffer.
	*
	******************************************************************************/

	#define ACPI_PLD_OUTPUT "%20s : %-6X\n"

	void acpi_db_dump_pld_buffer(union acpi_object *obj_desc)
	{
	union acpi_object *buffer_desc;
	struct acpi_pld_info *pld_info;
	u8 *new_buffer;
	acpi_status status;

	/* Object must be of type Package with at least one Buffer element */

	if (obj_desc->type != ACPI_TYPE_PACKAGE) {
	return;
	}

	buffer_desc = &obj_desc->package.elements[0];
	if (buffer_desc->type != ACPI_TYPE_BUFFER) {
	return;
	}

	/* Convert _PLD buffer to local _PLD struct */

	status = acpi_decode_pld_buffer(buffer_desc->buffer.pointer,
	buffer_desc->buffer.length, &pld_info);
	if (ACPI_FAILURE(status)) {
	return;
	}

	/* Encode local _PLD struct back to a _PLD buffer */

	new_buffer = acpi_db_encode_pld_buffer(pld_info);
	if (!new_buffer) {
	goto exit;
	}

	/* The two bit-packed buffers should match */

	if (memcmp(new_buffer, buffer_desc->buffer.pointer,
	buffer_desc->buffer.length)) {
	acpi_os_printf
	("Converted _PLD buffer does not compare. New:\n");

	acpi_ut_dump_buffer(new_buffer,
	buffer_desc->buffer.length, DB_BYTE_DISPLAY,
	0);
	}

	/* First 32-bit dword */

	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Revision", pld_info->revision);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_IgnoreColor",
	pld_info->ignore_color);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Red", pld_info->red);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Green", pld_info->green);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Blue", pld_info->blue);

	/* Second 32-bit dword */

	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Width", pld_info->width);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Height", pld_info->height);

	/* Third 32-bit dword */

	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_UserVisible",
	pld_info->user_visible);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Dock", pld_info->dock);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Lid", pld_info->lid);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Panel", pld_info->panel);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_VerticalPosition",
	pld_info->vertical_position);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_HorizontalPosition",
	pld_info->horizontal_position);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Shape", pld_info->shape);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_GroupOrientation",
	pld_info->group_orientation);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_GroupToken",
	pld_info->group_token);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_GroupPosition",
	pld_info->group_position);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Bay", pld_info->bay);

	/* Fourth 32-bit dword */

	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Ejectable", pld_info->ejectable);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_EjectRequired",
	pld_info->ospm_eject_required);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_CabinetNumber",
	pld_info->cabinet_number);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_CardCageNumber",
	pld_info->card_cage_number);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Reference", pld_info->reference);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Rotation", pld_info->rotation);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Order", pld_info->order);

	/* Fifth 32-bit dword */

	if (buffer_desc->buffer.length > 16) {
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_VerticalOffset",
	pld_info->vertical_offset);
	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_HorizontalOffset",
	pld_info->horizontal_offset);
	}

	ACPI_FREE(new_buffer);
	exit:
	ACPI_FREE(pld_info);
	}