patch-2.4.22 linux-2.4.22/drivers/acpi/executer/exmisc.c

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diff -urN linux-2.4.21/drivers/acpi/executer/exmisc.c linux-2.4.22/drivers/acpi/executer/exmisc.c
@@ -2,122 +2,229 @@
 /******************************************************************************
  *
  * Module Name: exmisc - ACPI AML (p-code) execution - specific opcodes
- *              $Revision: 92 $
  *
  *****************************************************************************/
 
 /*
- *  Copyright (C) 2000, 2001 R. Byron Moore
+ * Copyright (C) 2000 - 2003, R. Byron Moore
+ * All rights reserved.
  *
- *  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
+ * 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.h"
-#include "acparser.h"
-#include "acinterp.h"
-#include "amlcode.h"
-#include "acdispat.h"
+#include <acpi/acpi.h>
+#include <acpi/acinterp.h>
+#include <acpi/amlcode.h>
 
 
 #define _COMPONENT          ACPI_EXECUTER
-	 MODULE_NAME         ("exmisc")
+	 ACPI_MODULE_NAME    ("exmisc")
 
 
 /*******************************************************************************
  *
- * FUNCTION:    Acpi_ex_get_object_reference
+ * FUNCTION:    acpi_ex_get_object_reference
  *
- * PARAMETERS:  Obj_desc        - Create a reference to this object
- *              Return_desc        - Where to store the reference
+ * PARAMETERS:  obj_desc            - Create a reference to this object
+ *              return_desc         - Where to store the reference
+ *              walk_state          - Current state
  *
  * RETURN:      Status
  *
  * DESCRIPTION: Obtain and return a "reference" to the target object
- *              Common code for the Ref_of_op and the Cond_ref_of_op.
+ *              Common code for the ref_of_op and the cond_ref_of_op.
  *
  ******************************************************************************/
 
 acpi_status
 acpi_ex_get_object_reference (
-	acpi_operand_object     *obj_desc,
-	acpi_operand_object     **return_desc,
-	acpi_walk_state         *walk_state)
+	union acpi_operand_object       *obj_desc,
+	union acpi_operand_object       **return_desc,
+	struct acpi_walk_state          *walk_state)
 {
-	acpi_status             status = AE_OK;
+	union acpi_operand_object       *reference_obj;
+	union acpi_operand_object       *referenced_obj;
 
 
-	FUNCTION_TRACE_PTR ("Ex_get_object_reference", obj_desc);
+	ACPI_FUNCTION_TRACE_PTR ("ex_get_object_reference", obj_desc);
 
 
-	if (VALID_DESCRIPTOR_TYPE (obj_desc, ACPI_DESC_TYPE_INTERNAL)) {
-		if (obj_desc->common.type != INTERNAL_TYPE_REFERENCE) {
-			*return_desc = NULL;
-			status = AE_TYPE;
-			goto cleanup;
+	*return_desc = NULL;
+
+	switch (ACPI_GET_DESCRIPTOR_TYPE (obj_desc)) {
+	case ACPI_DESC_TYPE_OPERAND:
+
+		if (ACPI_GET_OBJECT_TYPE (obj_desc) != ACPI_TYPE_LOCAL_REFERENCE) {
+			return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
 		}
 
 		/*
-		 * Not a Name -- an indirect name pointer would have
-		 * been converted to a direct name pointer in Acpi_ex_resolve_operands
+		 * Must be a reference to a Local or Arg
 		 */
 		switch (obj_desc->reference.opcode) {
 		case AML_LOCAL_OP:
 		case AML_ARG_OP:
 
-			*return_desc = (void *) acpi_ds_method_data_get_node (obj_desc->reference.opcode,
-					  obj_desc->reference.offset, walk_state);
+			/* The referenced object is the pseudo-node for the local/arg */
+
+			referenced_obj = obj_desc->reference.object;
 			break;
 
 		default:
 
-			ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "(Internal) Unknown Ref subtype %02x\n",
+			ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown Reference subtype %X\n",
 				obj_desc->reference.opcode));
-			*return_desc = NULL;
-			status = AE_AML_INTERNAL;
-			goto cleanup;
+			return_ACPI_STATUS (AE_AML_INTERNAL);
 		}
+		break;
 
-	}
 
-	else if (VALID_DESCRIPTOR_TYPE (obj_desc, ACPI_DESC_TYPE_NAMED)) {
-		/* Must be a named object;  Just return the Node */
+	case ACPI_DESC_TYPE_NAMED:
 
-		*return_desc = obj_desc;
+		/*
+		 * A named reference that has already been resolved to a Node
+		 */
+		referenced_obj = obj_desc;
+		break;
+
+
+	default:
+
+		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Invalid descriptor type %X in %p\n",
+			ACPI_GET_DESCRIPTOR_TYPE (obj_desc), obj_desc));
+		return_ACPI_STATUS (AE_TYPE);
 	}
 
-	else {
-		*return_desc = NULL;
-		status = AE_TYPE;
+
+	/* Create a new reference object */
+
+	reference_obj = acpi_ut_create_internal_object (ACPI_TYPE_LOCAL_REFERENCE);
+	if (!reference_obj) {
+		return_ACPI_STATUS (AE_NO_MEMORY);
 	}
 
+	reference_obj->reference.opcode = AML_REF_OF_OP;
+	reference_obj->reference.object = referenced_obj;
+	*return_desc = reference_obj;
 
-cleanup:
+	ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Object %p Type [%s], returning Reference %p\n",
+		obj_desc, acpi_ut_get_object_type_name (obj_desc), *return_desc));
 
-	ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Obj=%p Ref=%p\n", obj_desc, *return_desc));
-	return_ACPI_STATUS (status);
+	return_ACPI_STATUS (AE_OK);
 }
 
 
 /*******************************************************************************
  *
- * FUNCTION:    Acpi_ex_do_concatenate
+ * FUNCTION:    acpi_ex_concat_template
  *
- * PARAMETERS:  *Obj_desc           - Object to be converted.  Must be an
+ * PARAMETERS:  *obj_desc           - Object to be converted.  Must be an
  *                                    Integer, Buffer, or String
- *              Walk_state          - Current walk state
+ *              walk_state          - Current walk state
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Concatenate two resource templates
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ex_concat_template (
+	union acpi_operand_object       *obj_desc1,
+	union acpi_operand_object       *obj_desc2,
+	union acpi_operand_object       **actual_return_desc,
+	struct acpi_walk_state          *walk_state)
+{
+	union acpi_operand_object       *return_desc;
+	u8                              *new_buf;
+	u8                              *end_tag1;
+	u8                              *end_tag2;
+	acpi_size                       length1;
+	acpi_size                       length2;
+
+
+	ACPI_FUNCTION_TRACE ("ex_concat_template");
+
+
+	/* Find the end_tags in each resource template */
+
+	end_tag1 = acpi_ut_get_resource_end_tag (obj_desc1);
+	end_tag2 = acpi_ut_get_resource_end_tag (obj_desc2);
+	if (!end_tag1 || !end_tag2) {
+		return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
+	}
+
+	/* Compute the length of each part */
+
+	length1 = ACPI_PTR_DIFF (end_tag1, obj_desc1->buffer.pointer);
+	length2 = ACPI_PTR_DIFF (end_tag2, obj_desc2->buffer.pointer) +
+			  2; /* Size of END_TAG */
+
+	/* Create a new buffer object for the result */
+
+	return_desc = acpi_ut_create_buffer_object (length1 + length2);
+	if (!return_desc) {
+		return_ACPI_STATUS (AE_NO_MEMORY);
+	}
+
+	/* Copy the templates to the new descriptor */
+
+	new_buf = return_desc->buffer.pointer;
+	ACPI_MEMCPY (new_buf, obj_desc1->buffer.pointer, length1);
+	ACPI_MEMCPY (new_buf + length1, obj_desc2->buffer.pointer, length2);
+
+	/* Compute the new checksum */
+
+	new_buf[return_desc->buffer.length - 1] =
+			acpi_ut_generate_checksum (return_desc->buffer.pointer,
+					   (return_desc->buffer.length - 1));
+
+	/* Return the completed template descriptor */
+
+	*actual_return_desc = return_desc;
+	return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_do_concatenate
+ *
+ * PARAMETERS:  obj_desc1           - First source object
+ *              obj_desc2           - Second source object
+ *              actual_return_desc  - Where to place the return object
+ *              walk_state          - Current walk state
  *
  * RETURN:      Status
  *
@@ -127,75 +234,54 @@
 
 acpi_status
 acpi_ex_do_concatenate (
-	acpi_operand_object     *obj_desc,
-	acpi_operand_object     *obj_desc2,
-	acpi_operand_object     **actual_return_desc,
-	acpi_walk_state         *walk_state)
+	union acpi_operand_object       *obj_desc1,
+	union acpi_operand_object       *obj_desc2,
+	union acpi_operand_object       **actual_return_desc,
+	struct acpi_walk_state          *walk_state)
 {
-	acpi_status             status;
-	u32                     i;
-	acpi_integer            this_integer;
-	acpi_operand_object     *return_desc;
-	NATIVE_CHAR             *new_buf;
-	u32                     integer_size = sizeof (acpi_integer);
+	acpi_status                     status;
+	u32                             i;
+	acpi_integer                    this_integer;
+	union acpi_operand_object       *return_desc;
+	char                            *new_buf;
 
 
-	FUNCTION_ENTRY ();
+	ACPI_FUNCTION_ENTRY ();
 
 
 	/*
 	 * There are three cases to handle:
-	 * 1) Two Integers concatenated to produce a buffer
-	 * 2) Two Strings concatenated to produce a string
-	 * 3) Two Buffers concatenated to produce a buffer
+	 *
+	 * 1) Two Integers concatenated to produce a new Buffer
+	 * 2) Two Strings concatenated to produce a new String
+	 * 3) Two Buffers concatenated to produce a new Buffer
 	 */
-	switch (obj_desc->common.type) {
+	switch (ACPI_GET_OBJECT_TYPE (obj_desc1)) {
 	case ACPI_TYPE_INTEGER:
 
-		/* 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);
-		}
-
-		/* Result of two integers is a buffer */
+		/* Result of two Integers is a Buffer */
+		/* Need enough buffer space for two integers */
 
-		return_desc = acpi_ut_create_internal_object (ACPI_TYPE_BUFFER);
+		return_desc = acpi_ut_create_buffer_object (acpi_gbl_integer_byte_width * 2);
 		if (!return_desc) {
 			return (AE_NO_MEMORY);
 		}
 
-		/* Need enough space for two integers */
-
-		return_desc->buffer.length = integer_size * 2;
-		new_buf = ACPI_MEM_CALLOCATE (return_desc->buffer.length);
-		if (!new_buf) {
-			REPORT_ERROR
-				(("Ex_do_concatenate: Buffer allocation failure\n"));
-			status = AE_NO_MEMORY;
-			goto cleanup;
-		}
-
-		return_desc->buffer.pointer = (u8 *) new_buf;
+		new_buf = (char *) return_desc->buffer.pointer;
 
 		/* Convert the first integer */
 
-		this_integer = obj_desc->integer.value;
-		for (i = 0; i < integer_size; i++) {
-			new_buf[i] = (u8) this_integer;
+		this_integer = obj_desc1->integer.value;
+		for (i = 0; i < acpi_gbl_integer_byte_width; i++) {
+			new_buf[i] = (char) this_integer;
 			this_integer >>= 8;
 		}
 
 		/* Convert the second integer */
 
 		this_integer = obj_desc2->integer.value;
-		for (; i < (integer_size * 2); i++) {
-			new_buf[i] = (u8) this_integer;
+		for (; i < (ACPI_MUL_2 (acpi_gbl_integer_byte_width)); i++) {
+			new_buf[i] = (char) this_integer;
 			this_integer >>= 8;
 		}
 
@@ -204,6 +290,8 @@
 
 	case ACPI_TYPE_STRING:
 
+		/* Result of two Strings is a String */
+
 		return_desc = acpi_ut_create_internal_object (ACPI_TYPE_STRING);
 		if (!return_desc) {
 			return (AE_NO_MEMORY);
@@ -211,66 +299,60 @@
 
 		/* Operand0 is string  */
 
-		new_buf = ACPI_MEM_ALLOCATE (obj_desc->string.length +
-				  obj_desc2->string.length + 1);
+		new_buf = ACPI_MEM_CALLOCATE ((acpi_size) obj_desc1->string.length +
+				   (acpi_size) obj_desc2->string.length + 1);
 		if (!new_buf) {
-			REPORT_ERROR
-				(("Ex_do_concatenate: String allocation failure\n"));
+			ACPI_REPORT_ERROR
+				(("ex_do_concatenate: String allocation failure\n"));
 			status = AE_NO_MEMORY;
 			goto cleanup;
 		}
 
-		STRCPY (new_buf, obj_desc->string.pointer);
-		STRCPY (new_buf + obj_desc->string.length,
+		/* Concatenate the strings */
+
+		ACPI_STRCPY (new_buf, obj_desc1->string.pointer);
+		ACPI_STRCPY (new_buf + obj_desc1->string.length,
 				  obj_desc2->string.pointer);
 
-		/* Point the return object to the new string */
+		/* Complete the String object initialization */
 
 		return_desc->string.pointer = new_buf;
-		return_desc->string.length = obj_desc->string.length +=
-				  obj_desc2->string.length;
+		return_desc->string.length = obj_desc1->string.length +
+				   obj_desc2->string.length;
 		break;
 
 
 	case ACPI_TYPE_BUFFER:
 
-		/* Operand0 is a buffer */
+		/* Result of two Buffers is a Buffer */
 
-		return_desc = acpi_ut_create_internal_object (ACPI_TYPE_BUFFER);
+		return_desc = acpi_ut_create_buffer_object (
+				   (acpi_size) obj_desc1->buffer.length +
+				   (acpi_size) obj_desc2->buffer.length);
 		if (!return_desc) {
 			return (AE_NO_MEMORY);
 		}
 
-		new_buf = ACPI_MEM_ALLOCATE (obj_desc->buffer.length +
-				  obj_desc2->buffer.length);
-		if (!new_buf) {
-			REPORT_ERROR
-				(("Ex_do_concatenate: Buffer allocation failure\n"));
-			status = AE_NO_MEMORY;
-			goto cleanup;
-		}
+		new_buf = (char *) return_desc->buffer.pointer;
 
-		MEMCPY (new_buf, obj_desc->buffer.pointer,
-				  obj_desc->buffer.length);
-		MEMCPY (new_buf + obj_desc->buffer.length, obj_desc2->buffer.pointer,
-				   obj_desc2->buffer.length);
+		/* Concatenate the buffers */
 
-		/*
-		 * Point the return object to the new buffer
-		 */
+		ACPI_MEMCPY (new_buf, obj_desc1->buffer.pointer,
+				  obj_desc1->buffer.length);
+		ACPI_MEMCPY (new_buf + obj_desc1->buffer.length, obj_desc2->buffer.pointer,
+				   obj_desc2->buffer.length);
 
-		return_desc->buffer.pointer    = (u8 *) new_buf;
-		return_desc->buffer.length     = obj_desc->buffer.length +
-				 obj_desc2->buffer.length;
 		break;
 
 
 	default:
+
+		/* Invalid object type, should not happen here */
+
 		status = AE_AML_INTERNAL;
 		return_desc = NULL;
 	}
 
-
 	*actual_return_desc = return_desc;
 	return (AE_OK);
 
@@ -284,11 +366,11 @@
 
 /*******************************************************************************
  *
- * FUNCTION:    Acpi_ex_do_math_op
+ * FUNCTION:    acpi_ex_do_math_op
  *
  * PARAMETERS:  Opcode              - AML opcode
  *              Operand0            - Integer operand #0
- *              Operand0            - Integer operand #1
+ *              Operand1            - Integer operand #1
  *
  * RETURN:      Integer result of the operation
  *
@@ -300,9 +382,9 @@
 
 acpi_integer
 acpi_ex_do_math_op (
-	u16                     opcode,
-	acpi_integer            operand0,
-	acpi_integer            operand1)
+	u16                             opcode,
+	acpi_integer                    operand0,
+	acpi_integer                    operand1)
 {
 
 
@@ -342,12 +424,12 @@
 		return (operand0 * operand1);
 
 
-	case AML_SHIFT_LEFT_OP:         /* Shift_left (Operand, Shift_count, Result) */
+	case AML_SHIFT_LEFT_OP:         /* shift_left (Operand, shift_count, Result) */
 
 		return (operand0 << operand1);
 
 
-	case AML_SHIFT_RIGHT_OP:        /* Shift_right (Operand, Shift_count, Result) */
+	case AML_SHIFT_RIGHT_OP:        /* shift_right (Operand, shift_count, Result) */
 
 		return (operand0 >> operand1);
 
@@ -365,11 +447,11 @@
 
 /*******************************************************************************
  *
- * FUNCTION:    Acpi_ex_do_logical_op
+ * FUNCTION:    acpi_ex_do_logical_op
  *
  * PARAMETERS:  Opcode              - AML opcode
  *              Operand0            - Integer operand #0
- *              Operand0            - Integer operand #1
+ *              Operand1            - Integer operand #1
  *
  * RETURN:      TRUE/FALSE result of the operation
  *
@@ -386,9 +468,9 @@
 
 u8
 acpi_ex_do_logical_op (
-	u16                     opcode,
-	acpi_integer            operand0,
-	acpi_integer            operand1)
+	u16                             opcode,
+	acpi_integer                    operand0,
+	acpi_integer                    operand1)
 {
 
 
@@ -432,6 +514,9 @@
 			return (TRUE);
 		}
 		break;
+
+	default:
+		break;
 	}
 
 	return (FALSE);

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TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)