patch-2.4.6 linux/drivers/acpi/interpreter/amconvrt.c

• Lines: 526
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.4.5/linux/drivers/acpi/interpreter/amconvrt.c
• Orig date: Mon Jan 29 10:15:59 2001

diff -u --recursive --new-file v2.4.5/linux/drivers/acpi/interpreter/amconvrt.c linux/drivers/acpi/interpreter/amconvrt.c
@@ -1,525 +0,0 @@
-/******************************************************************************
- *
- * Module Name: amconvrt - Object conversion routines
- *              $Revision: 3 $
- *
- *****************************************************************************/
-
-/*
- *  Copyright (C) 2000, 2001 R. Byron Moore
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2 of the License, or
- *  (at your option) any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-
-#include "acpi.h"
-#include "acparser.h"
-#include "acnamesp.h"
-#include "acinterp.h"
-#include "acevents.h"
-#include "amlcode.h"
-#include "acdispat.h"
-
-
-#define _COMPONENT          INTERPRETER
-	 MODULE_NAME         ("amconvrt")
-
-
-/*******************************************************************************
- *
- * FUNCTION:    Acpi_aml_convert_to_target_type
- *
- * PARAMETERS:  *Obj_desc       - Object to be converted.
- *              Walk_state      - Current method state
- *
- * RETURN:      Status
- *
- * DESCRIPTION:
- *
- ******************************************************************************/
-
-ACPI_STATUS
-acpi_aml_convert_to_target_type (
-	OBJECT_TYPE_INTERNAL    destination_type,
-	ACPI_OPERAND_OBJECT     **obj_desc,
-	ACPI_WALK_STATE         *walk_state)
-{
-	ACPI_STATUS             status = AE_OK;
-
-
-	/*
-	 * If required by the target,
-	 * perform implicit conversion on the source before we store it.
-	 */
-
-	switch (GET_CURRENT_ARG_TYPE (walk_state->op_info->runtime_args))
-	{
-	case ARGI_SIMPLE_TARGET:
-	case ARGI_FIXED_TARGET:
-	case ARGI_INTEGER_REF:      /* Handles Increment, Decrement cases */
-
-		switch (destination_type)
-		{
-		case INTERNAL_TYPE_DEF_FIELD:
-			/*
-			 * Named field can always handle conversions
-			 */
-			break;
-
-		default:
-			/* No conversion allowed for these types */
-
-			if (destination_type != (*obj_desc)->common.type) {
-				status = AE_TYPE;
-			}
-		}
-		break;
-
-
-	case ARGI_TARGETREF:
-
-		switch (destination_type)
-		{
-		case ACPI_TYPE_INTEGER:
-		case ACPI_TYPE_FIELD_UNIT:
-		case INTERNAL_TYPE_BANK_FIELD:
-		case INTERNAL_TYPE_INDEX_FIELD:
-			/*
-			 * These types require an Integer operand.  We can convert
-			 * a Buffer or a String to an Integer if necessary.
-			 */
-			status = acpi_aml_convert_to_integer (obj_desc, walk_state);
-			break;
-
-
-		case ACPI_TYPE_STRING:
-
-			/*
-			 * The operand must be a String.  We can convert an
-			 * Integer or Buffer if necessary
-			 */
-			status = acpi_aml_convert_to_string (obj_desc, walk_state);
-			break;
-
-
-		case ACPI_TYPE_BUFFER:
-
-			/*
-			 * The operand must be a String.  We can convert an
-			 * Integer or Buffer if necessary
-			 */
-			status = acpi_aml_convert_to_buffer (obj_desc, walk_state);
-			break;
-		}
-		break;
-
-
-	case ARGI_REFERENCE:
-		/*
-		 * Create_xxxx_field cases - we are storing the field object into the name
-		 */
-		break;
-
-
-	default:
-		status = AE_AML_INTERNAL;
-	}
-
-
-	/*
-	 * Source-to-Target conversion semantics:
-	 *
-	 * If conversion to the target type cannot be performed, then simply
-	 * overwrite the target with the new object and type.
-	 */
-	if (status == AE_TYPE) {
-		status = AE_OK;
-	}
-
-	return (status);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION:    Acpi_aml_convert_to_integer
- *
- * PARAMETERS:  *Obj_desc       - Object to be converted.  Must be an
- *                                Integer, Buffer, or String
- *              Walk_state      - Current method state
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Convert an ACPI Object to an integer.
- *
- ******************************************************************************/
-
-ACPI_STATUS
-acpi_aml_convert_to_integer (
-	ACPI_OPERAND_OBJECT     **obj_desc,
-	ACPI_WALK_STATE         *walk_state)
-{
-	u32                     i;
-	ACPI_OPERAND_OBJECT     *ret_desc;
-	u32                     count;
-	char                    *pointer;
-	ACPI_INTEGER            result;
-	u32                     integer_size = sizeof (ACPI_INTEGER);
-
-
-	switch ((*obj_desc)->common.type)
-	{
-	case ACPI_TYPE_INTEGER:
-		return (AE_OK);
-
-	case ACPI_TYPE_STRING:
-		pointer = (*obj_desc)->string.pointer;
-		count = (*obj_desc)->string.length;
-		break;
-
-	case ACPI_TYPE_BUFFER:
-		pointer = (char *) (*obj_desc)->buffer.pointer;
-		count = (*obj_desc)->buffer.length;
-		break;
-
-	default:
-		return (AE_TYPE);
-	}
-
-	/*
-	 * Create a new integer
-	 */
-	ret_desc = acpi_cm_create_internal_object (ACPI_TYPE_INTEGER);
-	if (!ret_desc) {
-		return (AE_NO_MEMORY);
-	}
-
-
-	/* Handle both ACPI 1.0 and ACPI 2.0 Integer widths */
-
-	if (walk_state->method_node->flags & ANOBJ_DATA_WIDTH_32) {
-		/*
-		 * We are running a method that exists in a 32-bit ACPI table.
-		 * Truncate the value to 32 bits by zeroing out the upper 32-bit field
-		 */
-		integer_size = sizeof (u32);
-	}
-
-
-	/*
-	 * Convert the buffer/string to an integer.  Note that both buffers and
-	 * strings are treated as raw data - we don't convert ascii to hex for
-	 * strings.
-	 *
-	 * There are two terminating conditions for the loop:
-	 * 1) The size of an integer has been reached, or
-	 * 2) The end of the buffer or string has been reached
-	 */
-	result = 0;
-
-	/* Transfer no more than an integer's worth of data */
-
-	if (count > integer_size) {
-		count = integer_size;
-	}
-
-	/*
-	 * String conversion is different than Buffer conversion
-	 */
-	switch ((*obj_desc)->common.type)
-	{
-	case ACPI_TYPE_STRING:
-
-		/* TBD: Need to use 64-bit STRTOUL */
-
-		/*
-		 * Convert string to an integer
-		 * String must be hexadecimal as per the ACPI specification
-		 */
-
-		result = STRTOUL (pointer, NULL, 16);
-		break;
-
-
-	case ACPI_TYPE_BUFFER:
-
-		/*
-		 * Buffer conversion - we simply grab enough raw data from the
-		 * buffer to fill an integer
-		 */
-		for (i = 0; i < count; i++) {
-			/*
-			 * Get next byte and shift it into the Result.
-			 * Little endian is used, meaning that the first byte of the buffer
-			 * is the LSB of the integer
-			 */
-			result |= (((ACPI_INTEGER) pointer[i]) << (i * 8));
-		}
-
-		break;
-	}
-
-	/* Save the Result, delete original descriptor, store new descriptor */
-
-	ret_desc->integer.value = result;
-
-	if (walk_state->opcode != AML_STORE_OP) {
-		acpi_cm_remove_reference (*obj_desc);
-	}
-
-	*obj_desc = ret_desc;
-
-	return (AE_OK);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION:    Acpi_aml_convert_to_buffer
- *
- * PARAMETERS:  *Obj_desc       - Object to be converted.  Must be an
- *                                Integer, Buffer, or String
- *              Walk_state      - Current method state
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Convert an ACPI Object to an Buffer
- *
- ******************************************************************************/
-
-ACPI_STATUS
-acpi_aml_convert_to_buffer (
-	ACPI_OPERAND_OBJECT     **obj_desc,
-	ACPI_WALK_STATE         *walk_state)
-{
-	ACPI_OPERAND_OBJECT     *ret_desc;
-	u32                     i;
-	u32                     integer_size = sizeof (ACPI_INTEGER);
-	u8                      *new_buf;
-
-
-	switch ((*obj_desc)->common.type)
-	{
-	case ACPI_TYPE_INTEGER:
-
-		/*
-		 * Create a new Buffer
-		 */
-		ret_desc = acpi_cm_create_internal_object (ACPI_TYPE_BUFFER);
-		if (!ret_desc) {
-			return (AE_NO_MEMORY);
-		}
-
-		/* Handle both ACPI 1.0 and ACPI 2.0 Integer widths */
-
-		if (walk_state->method_node->flags & ANOBJ_DATA_WIDTH_32) {
-			/*
-			 * We are running a method that exists in a 32-bit ACPI table.
-			 * Truncate the value to 32 bits by zeroing out the upper
-			 * 32-bit field
-			 */
-			integer_size = sizeof (u32);
-		}
-
-		/* Need enough space for one integers */
-
-		ret_desc->buffer.length = integer_size;
-		new_buf = acpi_cm_callocate (integer_size);
-		if (!new_buf) {
-			REPORT_ERROR
-				(("Aml_exec_dyadic2_r/Concat_op: Buffer allocation failure\n"));
-			acpi_cm_remove_reference (ret_desc);
-			return (AE_NO_MEMORY);
-		}
-
-		/* Copy the integer to the buffer */
-
-		for (i = 0; i < integer_size; i++) {
-			new_buf[i] = (u8) ((*obj_desc)->integer.value >> (i * 8));
-		}
-		ret_desc->buffer.pointer = new_buf;
-
-		/* Return the new buffer descriptor */
-
-		if (walk_state->opcode != AML_STORE_OP) {
-			acpi_cm_remove_reference (*obj_desc);
-		}
-		*obj_desc = ret_desc;
-		break;
-
-
-	case ACPI_TYPE_STRING:
-		break;
-
-
-	case ACPI_TYPE_BUFFER:
-		break;
-
-
-	default:
-		return (AE_TYPE);
-		break;
-   }
-
-	return (AE_OK);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION:    Acpi_aml_convert_to_string
- *
- * PARAMETERS:  *Obj_desc       - Object to be converted.  Must be an
- *                                Integer, Buffer, or String
- *              Walk_state      - Current method state
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Convert an ACPI Object to a string
- *
- ******************************************************************************/
-
-ACPI_STATUS
-acpi_aml_convert_to_string (
-	ACPI_OPERAND_OBJECT     **obj_desc,
-	ACPI_WALK_STATE         *walk_state)
-{
-	ACPI_OPERAND_OBJECT     *ret_desc;
-	u32                     i;
-	u32                     index;
-	u32                     integer_size = sizeof (ACPI_INTEGER);
-	u8                      *new_buf;
-	u8                      *pointer;
-
-
-	switch ((*obj_desc)->common.type)
-	{
-	case ACPI_TYPE_INTEGER:
-
-		/*
-		 * Create a new String
-		 */
-		ret_desc = acpi_cm_create_internal_object (ACPI_TYPE_STRING);
-		if (!ret_desc) {
-			return (AE_NO_MEMORY);
-		}
-
-		/* Handle both ACPI 1.0 and ACPI 2.0 Integer widths */
-
-		if (walk_state->method_node->flags & ANOBJ_DATA_WIDTH_32) {
-			/*
-			 * We are running a method that exists in a 32-bit ACPI table.
-			 * Truncate the value to 32 bits by zeroing out the upper
-			 * 32-bit field
-			 */
-			integer_size = sizeof (u32);
-		}
-
-		/* Need enough space for one ASCII integer plus null terminator */
-
-		ret_desc->string.length = (integer_size * 2) + 1;
-		new_buf = acpi_cm_callocate (ret_desc->string.length);
-		if (!new_buf) {
-			REPORT_ERROR
-				(("Aml_exec_dyadic2_r/Concat_op: Buffer allocation failure\n"));
-			acpi_cm_remove_reference (ret_desc);
-			return (AE_NO_MEMORY);
-		}
-
-		/* Copy the integer to the buffer */
-
-		for (i = 0; i < (integer_size * 2); i++) {
-			new_buf[i] = acpi_gbl_hex_to_ascii [((*obj_desc)->integer.value >> (i * 4)) & 0xF];
-		}
-
-		/* Null terminate */
-
-		new_buf [i] = 0;
-		ret_desc->buffer.pointer = new_buf;
-
-		/* Return the new buffer descriptor */
-
-		if (walk_state->opcode != AML_STORE_OP) {
-			acpi_cm_remove_reference (*obj_desc);
-		}
-		*obj_desc = ret_desc;
-
-		return (AE_OK);
-
-
-	case ACPI_TYPE_BUFFER:
-
-		if (((*obj_desc)->buffer.length * 3) > ACPI_MAX_STRING_CONVERSION) {
-			return (AE_AML_STRING_LIMIT);
-		}
-
-		/*
-		 * Create a new String
-		 */
-		ret_desc = acpi_cm_create_internal_object (ACPI_TYPE_STRING);
-		if (!ret_desc) {
-			return (AE_NO_MEMORY);
-		}
-
-		/* Need enough space for one ASCII integer plus null terminator */
-
-		ret_desc->string.length = (*obj_desc)->buffer.length * 3;
-		new_buf = acpi_cm_callocate (ret_desc->string.length + 1);
-		if (!new_buf) {
-			REPORT_ERROR
-				(("Aml_exec_dyadic2_r/Concat_op: Buffer allocation failure\n"));
-			acpi_cm_remove_reference (ret_desc);
-			return (AE_NO_MEMORY);
-		}
-
-		/*
-		 * Convert each byte of the buffer to two ASCII characters plus a space.
-		 */
-		pointer = (*obj_desc)->buffer.pointer;
-		index = 0;
-		for (i = 0; i < (*obj_desc)->buffer.length; i++) {
-			new_buf[index + 0] = acpi_gbl_hex_to_ascii [pointer[i] & 0x0F];
-			new_buf[index + 1] = acpi_gbl_hex_to_ascii [(pointer[i] >> 4) & 0x0F];
-			new_buf[index + 2] = ' ';
-			index += 3;
-		}
-
-		/* Null terminate */
-
-		new_buf [index] = 0;
-		ret_desc->buffer.pointer = new_buf;
-
-		/* Return the new buffer descriptor */
-
-		if (walk_state->opcode != AML_STORE_OP) {
-			acpi_cm_remove_reference (*obj_desc);
-		}
-		*obj_desc = ret_desc;
-		break;
-
-
-	case ACPI_TYPE_STRING:
-		break;
-
-
-	default:
-		return (AE_TYPE);
-		break;
-   }
-
-	return (AE_OK);
-}
-
-