Adding upstream version 6.1.76.upstream/6.1.76upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 299 insertions, 0 deletions

diff --git a/drivers/acpi/acpica/exoparg6.c b/drivers/acpi/acpica/exoparg6.c
new file mode 100644
index 000000000..2a506ef38
--- /dev/null
+++ b/drivers/acpi/acpica/exoparg6.c
@@ -0,0 +1,299 @@
+// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
+/******************************************************************************
+ *
+ * Module Name: exoparg6 - AML execution - opcodes with 6 arguments
+ *
+ * Copyright (C) 2000 - 2022, Intel Corp.
+ *
+ *****************************************************************************/
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acinterp.h"
+#include "acparser.h"
+#include "amlcode.h"
+
+#define _COMPONENT          ACPI_EXECUTER
+ACPI_MODULE_NAME("exoparg6")
+
+/*!
+ * Naming convention for AML interpreter execution routines.
+ *
+ * The routines that begin execution of AML opcodes are named with a common
+ * convention based upon the number of arguments, the number of target operands,
+ * and whether or not a value is returned:
+ *
+ *      AcpiExOpcode_xA_yT_zR
+ *
+ * Where:
+ *
+ * xA - ARGUMENTS:    The number of arguments (input operands) that are
+ *                    required for this opcode type (1 through 6 args).
+ * yT - TARGETS:      The number of targets (output operands) that are required
+ *                    for this opcode type (0, 1, or 2 targets).
+ * zR - RETURN VALUE: Indicates whether this opcode type returns a value
+ *                    as the function return (0 or 1).
+ *
+ * The AcpiExOpcode* functions are called via the Dispatcher component with
+ * fully resolved operands.
+!*/
+/* Local prototypes */
+static u8
+acpi_ex_do_match(u32 match_op,
+		 union acpi_operand_object *package_obj,
+		 union acpi_operand_object *match_obj);
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_do_match
+ *
+ * PARAMETERS:  match_op        - The AML match operand
+ *              package_obj     - Object from the target package
+ *              match_obj       - Object to be matched
+ *
+ * RETURN:      TRUE if the match is successful, FALSE otherwise
+ *
+ * DESCRIPTION: Implements the low-level match for the ASL Match operator.
+ *              Package elements will be implicitly converted to the type of
+ *              the match object (Integer/Buffer/String).
+ *
+ ******************************************************************************/
+
+static u8
+acpi_ex_do_match(u32 match_op,
+		 union acpi_operand_object *package_obj,
+		 union acpi_operand_object *match_obj)
+{
+	u8 logical_result = TRUE;
+	acpi_status status;
+
+	/*
+	 * Note: Since the package_obj/match_obj ordering is opposite to that of
+	 * the standard logical operators, we have to reverse them when we call
+	 * do_logical_op in order to make the implicit conversion rules work
+	 * correctly. However, this means we have to flip the entire equation
+	 * also. A bit ugly perhaps, but overall, better than fussing the
+	 * parameters around at runtime, over and over again.
+	 *
+	 * Below, P[i] refers to the package element, M refers to the Match object.
+	 */
+	switch (match_op) {
+	case MATCH_MTR:
+
+		/* Always true */
+
+		break;
+
+	case MATCH_MEQ:
+		/*
+		 * True if equal: (P[i] == M)
+		 * Change to:     (M == P[i])
+		 */
+		status =
+		    acpi_ex_do_logical_op(AML_LOGICAL_EQUAL_OP, match_obj,
+					  package_obj, &logical_result);
+		if (ACPI_FAILURE(status)) {
+			return (FALSE);
+		}
+		break;
+
+	case MATCH_MLE:
+		/*
+		 * True if less than or equal: (P[i] <= M) (P[i] not_greater than M)
+		 * Change to:                  (M >= P[i]) (M not_less than P[i])
+		 */
+		status =
+		    acpi_ex_do_logical_op(AML_LOGICAL_LESS_OP, match_obj,
+					  package_obj, &logical_result);
+		if (ACPI_FAILURE(status)) {
+			return (FALSE);
+		}
+		logical_result = (u8) ! logical_result;
+		break;
+
+	case MATCH_MLT:
+		/*
+		 * True if less than: (P[i] < M)
+		 * Change to:         (M > P[i])
+		 */
+		status =
+		    acpi_ex_do_logical_op(AML_LOGICAL_GREATER_OP, match_obj,
+					  package_obj, &logical_result);
+		if (ACPI_FAILURE(status)) {
+			return (FALSE);
+		}
+		break;
+
+	case MATCH_MGE:
+		/*
+		 * True if greater than or equal: (P[i] >= M) (P[i] not_less than M)
+		 * Change to:                     (M <= P[i]) (M not_greater than P[i])
+		 */
+		status =
+		    acpi_ex_do_logical_op(AML_LOGICAL_GREATER_OP, match_obj,
+					  package_obj, &logical_result);
+		if (ACPI_FAILURE(status)) {
+			return (FALSE);
+		}
+		logical_result = (u8) ! logical_result;
+		break;
+
+	case MATCH_MGT:
+		/*
+		 * True if greater than: (P[i] > M)
+		 * Change to:            (M < P[i])
+		 */
+		status =
+		    acpi_ex_do_logical_op(AML_LOGICAL_LESS_OP, match_obj,
+					  package_obj, &logical_result);
+		if (ACPI_FAILURE(status)) {
+			return (FALSE);
+		}
+		break;
+
+	default:
+
+		/* Undefined */
+
+		return (FALSE);
+	}
+
+	return (logical_result);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_opcode_6A_0T_1R
+ *
+ * PARAMETERS:  walk_state          - Current walk state
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Execute opcode with 6 arguments, no target, and a return value
+ *
+ ******************************************************************************/
+
+acpi_status acpi_ex_opcode_6A_0T_1R(struct acpi_walk_state *walk_state)
+{
+	union acpi_operand_object **operand = &walk_state->operands[0];
+	union acpi_operand_object *return_desc = NULL;
+	acpi_status status = AE_OK;
+	u64 index;
+	union acpi_operand_object *this_element;
+
+	ACPI_FUNCTION_TRACE_STR(ex_opcode_6A_0T_1R,
+				acpi_ps_get_opcode_name(walk_state->opcode));
+
+	switch (walk_state->opcode) {
+	case AML_MATCH_OP:
+		/*
+		 * Match (search_pkg[0], match_op1[1], match_obj1[2],
+		 *                      match_op2[3], match_obj2[4], start_index[5])
+		 */
+
+		/* Validate both Match Term Operators (MTR, MEQ, etc.) */
+
+		if ((operand[1]->integer.value > MAX_MATCH_OPERATOR) ||
+		    (operand[3]->integer.value > MAX_MATCH_OPERATOR)) {
+			ACPI_ERROR((AE_INFO, "Match operator out of range"));
+			status = AE_AML_OPERAND_VALUE;
+			goto cleanup;
+		}
+
+		/* Get the package start_index, validate against the package length */
+
+		index = operand[5]->integer.value;
+		if (index >= operand[0]->package.count) {
+			ACPI_ERROR((AE_INFO,
+				    "Index (0x%8.8X%8.8X) beyond package end (0x%X)",
+				    ACPI_FORMAT_UINT64(index),
+				    operand[0]->package.count));
+			status = AE_AML_PACKAGE_LIMIT;
+			goto cleanup;
+		}
+
+		/* Create an integer for the return value */
+		/* Default return value is ACPI_UINT64_MAX if no match found */
+
+		return_desc = acpi_ut_create_integer_object(ACPI_UINT64_MAX);
+		if (!return_desc) {
+			status = AE_NO_MEMORY;
+			goto cleanup;
+
+		}
+
+		/*
+		 * Examine each element until a match is found. Both match conditions
+		 * must be satisfied for a match to occur. Within the loop,
+		 * "continue" signifies that the current element does not match
+		 * and the next should be examined.
+		 *
+		 * Upon finding a match, the loop will terminate via "break" at
+		 * the bottom. If it terminates "normally", match_value will be
+		 * ACPI_UINT64_MAX (Ones) (its initial value) indicating that no
+		 * match was found.
+		 */
+		for (; index < operand[0]->package.count; index++) {
+
+			/* Get the current package element */
+
+			this_element = operand[0]->package.elements[index];
+
+			/* Treat any uninitialized (NULL) elements as non-matching */
+
+			if (!this_element) {
+				continue;
+			}
+
+			/*
+			 * Both match conditions must be satisfied. Execution of a continue
+			 * (proceed to next iteration of enclosing for loop) signifies a
+			 * non-match.
+			 */
+			if (!acpi_ex_do_match((u32) operand[1]->integer.value,
+					      this_element, operand[2])) {
+				continue;
+			}
+
+			if (!acpi_ex_do_match((u32) operand[3]->integer.value,
+					      this_element, operand[4])) {
+				continue;
+			}
+
+			/* Match found: Index is the return value */
+
+			return_desc->integer.value = index;
+			break;
+		}
+		break;
+
+	case AML_LOAD_TABLE_OP:
+
+		status = acpi_ex_load_table_op(walk_state, &return_desc);
+		break;
+
+	default:
+
+		ACPI_ERROR((AE_INFO, "Unknown AML opcode 0x%X",
+			    walk_state->opcode));
+
+		status = AE_AML_BAD_OPCODE;
+		goto cleanup;
+	}
+
+cleanup:
+
+	/* Delete return object on error */
+
+	if (ACPI_FAILURE(status)) {
+		acpi_ut_remove_reference(return_desc);
+	}
+
+	/* Save return object on success */
+
+	else {
+		walk_state->result_obj = return_desc;
+	}
+
+	return_ACPI_STATUS(status);
+}