1 files changed, 31 insertions, 313 deletions

diff --git a/drivers/acpi/acpica/exmisc.c b/drivers/acpi/acpica/exmisc.c
index 00bf29877574..07cbac58ed21 100644
--- a/drivers/acpi/acpica/exmisc.c
+++ b/drivers/acpi/acpica/exmisc.c
@@ -1,51 +1,16 @@
+// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
 /******************************************************************************
  *
  * Module Name: exmisc - ACPI AML (p-code) execution - specific opcodes
  *
- *****************************************************************************/
-
-/*
- * Copyright (C) 2000 - 2013, Intel Corp.
- * 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.
+ * Copyright (C) 2000 - 2025, Intel Corp.
  *
- * 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 "accommon.h"
 #include "acinterp.h"
 #include "amlcode.h"
-#include "amlresrc.h"
 
 #define _COMPONENT          ACPI_EXECUTER
 ACPI_MODULE_NAME("exmisc")
@@ -98,9 +63,9 @@ acpi_ex_get_object_reference(union acpi_operand_object *obj_desc,
 
 		default:
 
-			ACPI_ERROR((AE_INFO, "Unknown Reference Class 0x%2.2X",
+			ACPI_ERROR((AE_INFO, "Invalid Reference Class 0x%2.2X",
 				    obj_desc->reference.class));
-			return_ACPI_STATUS(AE_AML_INTERNAL);
+			return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 		}
 		break;
 
@@ -140,263 +105,6 @@ acpi_ex_get_object_reference(union acpi_operand_object *obj_desc,
 
 /*******************************************************************************
  *
- * FUNCTION:    acpi_ex_concat_template
- *
- * PARAMETERS:  operand0            - First source object
- *              operand1            - Second source object
- *              actual_return_desc  - Where to place the return object
- *              walk_state          - Current walk state
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Concatenate two resource templates
- *
- ******************************************************************************/
-
-acpi_status
-acpi_ex_concat_template(union acpi_operand_object *operand0,
-			union acpi_operand_object *operand1,
-			union acpi_operand_object **actual_return_desc,
-			struct acpi_walk_state *walk_state)
-{
-	acpi_status status;
-	union acpi_operand_object *return_desc;
-	u8 *new_buf;
-	u8 *end_tag;
-	acpi_size length0;
-	acpi_size length1;
-	acpi_size new_length;
-
-	ACPI_FUNCTION_TRACE(ex_concat_template);
-
-	/*
-	 * Find the end_tag descriptor in each resource template.
-	 * Note1: returned pointers point TO the end_tag, not past it.
-	 * Note2: zero-length buffers are allowed; treated like one end_tag
-	 */
-
-	/* Get the length of the first resource template */
-
-	status = acpi_ut_get_resource_end_tag(operand0, &end_tag);
-	if (ACPI_FAILURE(status)) {
-		return_ACPI_STATUS(status);
-	}
-
-	length0 = ACPI_PTR_DIFF(end_tag, operand0->buffer.pointer);
-
-	/* Get the length of the second resource template */
-
-	status = acpi_ut_get_resource_end_tag(operand1, &end_tag);
-	if (ACPI_FAILURE(status)) {
-		return_ACPI_STATUS(status);
-	}
-
-	length1 = ACPI_PTR_DIFF(end_tag, operand1->buffer.pointer);
-
-	/* Combine both lengths, minimum size will be 2 for end_tag */
-
-	new_length = length0 + length1 + sizeof(struct aml_resource_end_tag);
-
-	/* Create a new buffer object for the result (with one end_tag) */
-
-	return_desc = acpi_ut_create_buffer_object(new_length);
-	if (!return_desc) {
-		return_ACPI_STATUS(AE_NO_MEMORY);
-	}
-
-	/*
-	 * Copy the templates to the new buffer, 0 first, then 1 follows. One
-	 * end_tag descriptor is copied from Operand1.
-	 */
-	new_buf = return_desc->buffer.pointer;
-	ACPI_MEMCPY(new_buf, operand0->buffer.pointer, length0);
-	ACPI_MEMCPY(new_buf + length0, operand1->buffer.pointer, length1);
-
-	/* Insert end_tag and set the checksum to zero, means "ignore checksum" */
-
-	new_buf[new_length - 1] = 0;
-	new_buf[new_length - 2] = ACPI_RESOURCE_NAME_END_TAG | 1;
-
-	/* Return the completed resource template */
-
-	*actual_return_desc = return_desc;
-	return_ACPI_STATUS(AE_OK);
-}
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_ex_do_concatenate
- *
- * PARAMETERS:  operand0            - First source object
- *              operand1            - Second source object
- *              actual_return_desc  - Where to place the return object
- *              walk_state          - Current walk state
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Concatenate two objects OF THE SAME TYPE.
- *
- ******************************************************************************/
-
-acpi_status
-acpi_ex_do_concatenate(union acpi_operand_object *operand0,
-		       union acpi_operand_object *operand1,
-		       union acpi_operand_object **actual_return_desc,
-		       struct acpi_walk_state *walk_state)
-{
-	union acpi_operand_object *local_operand1 = operand1;
-	union acpi_operand_object *return_desc;
-	char *new_buf;
-	acpi_status status;
-
-	ACPI_FUNCTION_TRACE(ex_do_concatenate);
-
-	/*
-	 * Convert the second operand if necessary. The first operand
-	 * determines the type of the second operand, (See the Data Types
-	 * section of the ACPI specification.)  Both object types are
-	 * guaranteed to be either Integer/String/Buffer by the operand
-	 * resolution mechanism.
-	 */
-	switch (operand0->common.type) {
-	case ACPI_TYPE_INTEGER:
-
-		status =
-		    acpi_ex_convert_to_integer(operand1, &local_operand1, 16);
-		break;
-
-	case ACPI_TYPE_STRING:
-
-		status = acpi_ex_convert_to_string(operand1, &local_operand1,
-						   ACPI_IMPLICIT_CONVERT_HEX);
-		break;
-
-	case ACPI_TYPE_BUFFER:
-
-		status = acpi_ex_convert_to_buffer(operand1, &local_operand1);
-		break;
-
-	default:
-
-		ACPI_ERROR((AE_INFO, "Invalid object type: 0x%X",
-			    operand0->common.type));
-		status = AE_AML_INTERNAL;
-	}
-
-	if (ACPI_FAILURE(status)) {
-		goto cleanup;
-	}
-
-	/*
-	 * Both operands are now known to be the same object type
-	 * (Both are Integer, String, or Buffer), and we can now perform the
-	 * concatenation.
-	 */
-
-	/*
-	 * There are three cases to handle:
-	 *
-	 * 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 (operand0->common.type) {
-	case ACPI_TYPE_INTEGER:
-
-		/* Result of two Integers is a Buffer */
-		/* Need enough buffer space for two integers */
-
-		return_desc = acpi_ut_create_buffer_object((acpi_size)
-							   ACPI_MUL_2
-							   (acpi_gbl_integer_byte_width));
-		if (!return_desc) {
-			status = AE_NO_MEMORY;
-			goto cleanup;
-		}
-
-		new_buf = (char *)return_desc->buffer.pointer;
-
-		/* Copy the first integer, LSB first */
-
-		ACPI_MEMCPY(new_buf, &operand0->integer.value,
-			    acpi_gbl_integer_byte_width);
-
-		/* Copy the second integer (LSB first) after the first */
-
-		ACPI_MEMCPY(new_buf + acpi_gbl_integer_byte_width,
-			    &local_operand1->integer.value,
-			    acpi_gbl_integer_byte_width);
-		break;
-
-	case ACPI_TYPE_STRING:
-
-		/* Result of two Strings is a String */
-
-		return_desc = acpi_ut_create_string_object(((acpi_size)
-							    operand0->string.
-							    length +
-							    local_operand1->
-							    string.length));
-		if (!return_desc) {
-			status = AE_NO_MEMORY;
-			goto cleanup;
-		}
-
-		new_buf = return_desc->string.pointer;
-
-		/* Concatenate the strings */
-
-		ACPI_STRCPY(new_buf, operand0->string.pointer);
-		ACPI_STRCPY(new_buf + operand0->string.length,
-			    local_operand1->string.pointer);
-		break;
-
-	case ACPI_TYPE_BUFFER:
-
-		/* Result of two Buffers is a Buffer */
-
-		return_desc = acpi_ut_create_buffer_object(((acpi_size)
-							    operand0->buffer.
-							    length +
-							    local_operand1->
-							    buffer.length));
-		if (!return_desc) {
-			status = AE_NO_MEMORY;
-			goto cleanup;
-		}
-
-		new_buf = (char *)return_desc->buffer.pointer;
-
-		/* Concatenate the buffers */
-
-		ACPI_MEMCPY(new_buf, operand0->buffer.pointer,
-			    operand0->buffer.length);
-		ACPI_MEMCPY(new_buf + operand0->buffer.length,
-			    local_operand1->buffer.pointer,
-			    local_operand1->buffer.length);
-		break;
-
-	default:
-
-		/* Invalid object type, should not happen here */
-
-		ACPI_ERROR((AE_INFO, "Invalid object type: 0x%X",
-			    operand0->common.type));
-		status = AE_AML_INTERNAL;
-		goto cleanup;
-	}
-
-	*actual_return_desc = return_desc;
-
-      cleanup:
-	if (local_operand1 != operand1) {
-		acpi_ut_remove_reference(local_operand1);
-	}
-	return_ACPI_STATUS(status);
-}
-
-/*******************************************************************************
- *
  * FUNCTION:    acpi_ex_do_math_op
  *
  * PARAMETERS:  opcode              - AML opcode
@@ -507,14 +215,14 @@ acpi_ex_do_logical_numeric_op(u16 opcode,
 	ACPI_FUNCTION_TRACE(ex_do_logical_numeric_op);
 
 	switch (opcode) {
-	case AML_LAND_OP:	/* LAnd (Integer0, Integer1) */
+	case AML_LOGICAL_AND_OP:	/* LAnd (Integer0, Integer1) */
 
 		if (integer0 && integer1) {
 			local_result = TRUE;
 		}
 		break;
 
-	case AML_LOR_OP:	/* LOr (Integer0, Integer1) */
+	case AML_LOGICAL_OR_OP:	/* LOr (Integer0, Integer1) */
 
 		if (integer0 || integer1) {
 			local_result = TRUE;
@@ -523,6 +231,8 @@ acpi_ex_do_logical_numeric_op(u16 opcode,
 
 	default:
 
+		ACPI_ERROR((AE_INFO,
+			    "Invalid numeric logical opcode: %X", opcode));
 		status = AE_AML_INTERNAL;
 		break;
 	}
@@ -585,14 +295,15 @@ acpi_ex_do_logical_op(u16 opcode,
 	switch (operand0->common.type) {
 	case ACPI_TYPE_INTEGER:
 
-		status =
-		    acpi_ex_convert_to_integer(operand1, &local_operand1, 16);
+		status = acpi_ex_convert_to_integer(operand1, &local_operand1,
+						    ACPI_IMPLICIT_CONVERSION);
 		break;
 
 	case ACPI_TYPE_STRING:
 
-		status = acpi_ex_convert_to_string(operand1, &local_operand1,
-						   ACPI_IMPLICIT_CONVERT_HEX);
+		status =
+		    acpi_ex_convert_to_string(operand1, &local_operand1,
+					      ACPI_IMPLICIT_CONVERT_HEX);
 		break;
 
 	case ACPI_TYPE_BUFFER:
@@ -602,6 +313,9 @@ acpi_ex_do_logical_op(u16 opcode,
 
 	default:
 
+		ACPI_ERROR((AE_INFO,
+			    "Invalid object type for logical operator: %X",
+			    operand0->common.type));
 		status = AE_AML_INTERNAL;
 		break;
 	}
@@ -622,21 +336,21 @@ acpi_ex_do_logical_op(u16 opcode,
 		integer1 = local_operand1->integer.value;
 
 		switch (opcode) {
-		case AML_LEQUAL_OP:	/* LEqual (Operand0, Operand1) */
+		case AML_LOGICAL_EQUAL_OP:	/* LEqual (Operand0, Operand1) */
 
 			if (integer0 == integer1) {
 				local_result = TRUE;
 			}
 			break;
 
-		case AML_LGREATER_OP:	/* LGreater (Operand0, Operand1) */
+		case AML_LOGICAL_GREATER_OP:	/* LGreater (Operand0, Operand1) */
 
 			if (integer0 > integer1) {
 				local_result = TRUE;
 			}
 			break;
 
-		case AML_LLESS_OP:	/* LLess (Operand0, Operand1) */
+		case AML_LOGICAL_LESS_OP:	/* LLess (Operand0, Operand1) */
 
 			if (integer0 < integer1) {
 				local_result = TRUE;
@@ -645,6 +359,8 @@ acpi_ex_do_logical_op(u16 opcode,
 
 		default:
 
+			ACPI_ERROR((AE_INFO,
+				    "Invalid comparison opcode: %X", opcode));
 			status = AE_AML_INTERNAL;
 			break;
 		}
@@ -660,12 +376,12 @@ acpi_ex_do_logical_op(u16 opcode,
 
 		/* Lexicographic compare: compare the data bytes */
 
-		compare = ACPI_MEMCMP(operand0->buffer.pointer,
-				      local_operand1->buffer.pointer,
-				      (length0 > length1) ? length1 : length0);
+		compare = memcmp(operand0->buffer.pointer,
+				 local_operand1->buffer.pointer,
+				 (length0 > length1) ? length1 : length0);
 
 		switch (opcode) {
-		case AML_LEQUAL_OP:	/* LEqual (Operand0, Operand1) */
+		case AML_LOGICAL_EQUAL_OP:	/* LEqual (Operand0, Operand1) */
 
 			/* Length and all bytes must be equal */
 
@@ -677,7 +393,7 @@ acpi_ex_do_logical_op(u16 opcode,
 			}
 			break;
 
-		case AML_LGREATER_OP:	/* LGreater (Operand0, Operand1) */
+		case AML_LOGICAL_GREATER_OP:	/* LGreater (Operand0, Operand1) */
 
 			if (compare > 0) {
 				local_result = TRUE;
@@ -694,7 +410,7 @@ acpi_ex_do_logical_op(u16 opcode,
 			}
 			break;
 
-		case AML_LLESS_OP:	/* LLess (Operand0, Operand1) */
+		case AML_LOGICAL_LESS_OP:	/* LLess (Operand0, Operand1) */
 
 			if (compare > 0) {
 				goto cleanup;	/* FALSE */
@@ -713,12 +429,14 @@ acpi_ex_do_logical_op(u16 opcode,
 
 		default:
 
+			ACPI_ERROR((AE_INFO,
+				    "Invalid comparison opcode: %X", opcode));
 			status = AE_AML_INTERNAL;
 			break;
 		}
 	}
 
-      cleanup:
+cleanup:
 
 	/* New object was created if implicit conversion performed - delete */