zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/drivers/acpi/acpica/nspredef.c b/ap/os/linux/linux-3.4.x/drivers/acpi/acpica/nspredef.c
new file mode 100644
index 0000000..fe66260
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/acpi/acpica/nspredef.c
@@ -0,0 +1,1173 @@
+/******************************************************************************
+ *
+ * Module Name: nspredef - Validation of ACPI predefined methods and objects
+ * $Revision: 1.1 $
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2012, 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.
+ *
+ * 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.
+ */
+
+#define ACPI_CREATE_PREDEFINED_TABLE
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acnamesp.h"
+#include "acpredef.h"
+
+#define _COMPONENT ACPI_NAMESPACE
+ACPI_MODULE_NAME("nspredef")
+
+/*******************************************************************************
+ *
+ * This module validates predefined ACPI objects that appear in the namespace,
+ * at the time they are evaluated (via acpi_evaluate_object). The purpose of this
+ * validation is to detect problems with BIOS-exposed predefined ACPI objects
+ * before the results are returned to the ACPI-related drivers.
+ *
+ * There are several areas that are validated:
+ *
+ * 1) The number of input arguments as defined by the method/object in the
+ * ASL is validated against the ACPI specification.
+ * 2) The type of the return object (if any) is validated against the ACPI
+ * specification.
+ * 3) For returned package objects, the count of package elements is
+ * validated, as well as the type of each package element. Nested
+ * packages are supported.
+ *
+ * For any problems found, a warning message is issued.
+ *
+ ******************************************************************************/
+/* Local prototypes */
+static acpi_status
+acpi_ns_check_package(struct acpi_predefined_data *data,
+ union acpi_operand_object **return_object_ptr);
+
+static acpi_status
+acpi_ns_check_package_list(struct acpi_predefined_data *data,
+ const union acpi_predefined_info *package,
+ union acpi_operand_object **elements, u32 count);
+
+static acpi_status
+acpi_ns_check_package_elements(struct acpi_predefined_data *data,
+ union acpi_operand_object **elements,
+ u8 type1,
+ u32 count1,
+ u8 type2, u32 count2, u32 start_index);
+
+static acpi_status
+acpi_ns_check_object_type(struct acpi_predefined_data *data,
+ union acpi_operand_object **return_object_ptr,
+ u32 expected_btypes, u32 package_index);
+
+static acpi_status
+acpi_ns_check_reference(struct acpi_predefined_data *data,
+ union acpi_operand_object *return_object);
+
+static void acpi_ns_get_expected_types(char *buffer, u32 expected_btypes);
+
+/*
+ * Names for the types that can be returned by the predefined objects.
+ * Used for warning messages. Must be in the same order as the ACPI_RTYPEs
+ */
+static const char *acpi_rtype_names[] = {
+ "/Integer",
+ "/String",
+ "/Buffer",
+ "/Package",
+ "/Reference",
+};
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ns_check_predefined_names
+ *
+ * PARAMETERS: Node - Namespace node for the method/object
+ * user_param_count - Number of parameters actually passed
+ * return_status - Status from the object evaluation
+ * return_object_ptr - Pointer to the object returned from the
+ * evaluation of a method or object
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Check an ACPI name for a match in the predefined name list.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ns_check_predefined_names(struct acpi_namespace_node *node,
+ u32 user_param_count,
+ acpi_status return_status,
+ union acpi_operand_object **return_object_ptr)
+{
+ union acpi_operand_object *return_object = *return_object_ptr;
+ acpi_status status = AE_OK;
+ const union acpi_predefined_info *predefined;
+ char *pathname;
+ struct acpi_predefined_data *data;
+
+ /* Match the name for this method/object against the predefined list */
+
+ predefined = acpi_ns_check_for_predefined_name(node);
+
+ /* Get the full pathname to the object, for use in warning messages */
+
+ pathname = acpi_ns_get_external_pathname(node);
+ if (!pathname) {
+ return AE_OK; /* Could not get pathname, ignore */
+ }
+
+ /*
+ * Check that the parameter count for this method matches the ASL
+ * definition. For predefined names, ensure that both the caller and
+ * the method itself are in accordance with the ACPI specification.
+ */
+ acpi_ns_check_parameter_count(pathname, node, user_param_count,
+ predefined);
+
+ /* If not a predefined name, we cannot validate the return object */
+
+ if (!predefined) {
+ goto cleanup;
+ }
+
+ /*
+ * If the method failed or did not actually return an object, we cannot
+ * validate the return object
+ */
+ if ((return_status != AE_OK) && (return_status != AE_CTRL_RETURN_VALUE)) {
+ goto cleanup;
+ }
+
+ /*
+ * If there is no return value, check if we require a return value for
+ * this predefined name. Either one return value is expected, or none,
+ * for both methods and other objects.
+ *
+ * Exit now if there is no return object. Warning if one was expected.
+ */
+ if (!return_object) {
+ if ((predefined->info.expected_btypes) &&
+ (!(predefined->info.expected_btypes & ACPI_RTYPE_NONE))) {
+ ACPI_WARN_PREDEFINED((AE_INFO, pathname,
+ ACPI_WARN_ALWAYS,
+ "Missing expected return value"));
+
+ status = AE_AML_NO_RETURN_VALUE;
+ }
+ goto cleanup;
+ }
+
+ /*
+ * Return value validation and possible repair.
+ *
+ * 1) Don't perform return value validation/repair if this feature
+ * has been disabled via a global option.
+ *
+ * 2) We have a return value, but if one wasn't expected, just exit,
+ * this is not a problem. For example, if the "Implicit Return"
+ * feature is enabled, methods will always return a value.
+ *
+ * 3) If the return value can be of any type, then we cannot perform
+ * any validation, just exit.
+ */
+ if (acpi_gbl_disable_auto_repair ||
+ (!predefined->info.expected_btypes) ||
+ (predefined->info.expected_btypes == ACPI_RTYPE_ALL)) {
+ goto cleanup;
+ }
+
+ /* Create the parameter data block for object validation */
+
+ data = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_predefined_data));
+ if (!data) {
+ goto cleanup;
+ }
+ data->predefined = predefined;
+ data->node = node;
+ data->node_flags = node->flags;
+ data->pathname = pathname;
+
+ /*
+ * Check that the type of the main return object is what is expected
+ * for this predefined name
+ */
+ status = acpi_ns_check_object_type(data, return_object_ptr,
+ predefined->info.expected_btypes,
+ ACPI_NOT_PACKAGE_ELEMENT);
+ if (ACPI_FAILURE(status)) {
+ goto exit;
+ }
+
+ /*
+ * For returned Package objects, check the type of all sub-objects.
+ * Note: Package may have been newly created by call above.
+ */
+ if ((*return_object_ptr)->common.type == ACPI_TYPE_PACKAGE) {
+ data->parent_package = *return_object_ptr;
+ status = acpi_ns_check_package(data, return_object_ptr);
+ if (ACPI_FAILURE(status)) {
+ goto exit;
+ }
+ }
+
+ /*
+ * The return object was OK, or it was successfully repaired above.
+ * Now make some additional checks such as verifying that package
+ * objects are sorted correctly (if required) or buffer objects have
+ * the correct data width (bytes vs. dwords). These repairs are
+ * performed on a per-name basis, i.e., the code is specific to
+ * particular predefined names.
+ */
+ status = acpi_ns_complex_repairs(data, node, status, return_object_ptr);
+
+exit:
+ /*
+ * If the object validation failed or if we successfully repaired one
+ * or more objects, mark the parent node to suppress further warning
+ * messages during the next evaluation of the same method/object.
+ */
+ if (ACPI_FAILURE(status) || (data->flags & ACPI_OBJECT_REPAIRED)) {
+ node->flags |= ANOBJ_EVALUATED;
+ }
+ ACPI_FREE(data);
+
+cleanup:
+ ACPI_FREE(pathname);
+ return (status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ns_check_parameter_count
+ *
+ * PARAMETERS: Pathname - Full pathname to the node (for error msgs)
+ * Node - Namespace node for the method/object
+ * user_param_count - Number of args passed in by the caller
+ * Predefined - Pointer to entry in predefined name table
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Check that the declared (in ASL/AML) parameter count for a
+ * predefined name is what is expected (i.e., what is defined in
+ * the ACPI specification for this predefined name.)
+ *
+ ******************************************************************************/
+
+void
+acpi_ns_check_parameter_count(char *pathname,
+ struct acpi_namespace_node *node,
+ u32 user_param_count,
+ const union acpi_predefined_info *predefined)
+{
+ u32 param_count;
+ u32 required_params_current;
+ u32 required_params_old;
+
+ /* Methods have 0-7 parameters. All other types have zero. */
+
+ param_count = 0;
+ if (node->type == ACPI_TYPE_METHOD) {
+ param_count = node->object->method.param_count;
+ }
+
+ if (!predefined) {
+ /*
+ * Check the parameter count for non-predefined methods/objects.
+ *
+ * Warning if too few or too many arguments have been passed by the
+ * caller. An incorrect number of arguments may not cause the method
+ * to fail. However, the method will fail if there are too few
+ * arguments and the method attempts to use one of the missing ones.
+ */
+ if (user_param_count < param_count) {
+ ACPI_WARN_PREDEFINED((AE_INFO, pathname,
+ ACPI_WARN_ALWAYS,
+ "Insufficient arguments - needs %u, found %u",
+ param_count, user_param_count));
+ } else if (user_param_count > param_count) {
+ ACPI_WARN_PREDEFINED((AE_INFO, pathname,
+ ACPI_WARN_ALWAYS,
+ "Excess arguments - needs %u, found %u",
+ param_count, user_param_count));
+ }
+ return;
+ }
+
+ /*
+ * Validate the user-supplied parameter count.
+ * Allow two different legal argument counts (_SCP, etc.)
+ */
+ required_params_current = predefined->info.param_count & 0x0F;
+ required_params_old = predefined->info.param_count >> 4;
+
+ if (user_param_count != ACPI_UINT32_MAX) {
+ if ((user_param_count != required_params_current) &&
+ (user_param_count != required_params_old)) {
+ ACPI_WARN_PREDEFINED((AE_INFO, pathname,
+ ACPI_WARN_ALWAYS,
+ "Parameter count mismatch - "
+ "caller passed %u, ACPI requires %u",
+ user_param_count,
+ required_params_current));
+ }
+ }
+
+ /*
+ * Check that the ASL-defined parameter count is what is expected for
+ * this predefined name (parameter count as defined by the ACPI
+ * specification)
+ */
+ if ((param_count != required_params_current) &&
+ (param_count != required_params_old)) {
+ ACPI_WARN_PREDEFINED((AE_INFO, pathname, node->flags,
+ "Parameter count mismatch - ASL declared %u, ACPI requires %u",
+ param_count, required_params_current));
+ }
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ns_check_for_predefined_name
+ *
+ * PARAMETERS: Node - Namespace node for the method/object
+ *
+ * RETURN: Pointer to entry in predefined table. NULL indicates not found.
+ *
+ * DESCRIPTION: Check an object name against the predefined object list.
+ *
+ ******************************************************************************/
+
+const union acpi_predefined_info *acpi_ns_check_for_predefined_name(struct
+ acpi_namespace_node
+ *node)
+{
+ const union acpi_predefined_info *this_name;
+
+ /* Quick check for a predefined name, first character must be underscore */
+
+ if (node->name.ascii[0] != '_') {
+ return (NULL);
+ }
+
+ /* Search info table for a predefined method/object name */
+
+ this_name = predefined_names;
+ while (this_name->info.name[0]) {
+ if (ACPI_COMPARE_NAME(node->name.ascii, this_name->info.name)) {
+ return (this_name);
+ }
+
+ /*
+ * Skip next entry in the table if this name returns a Package
+ * (next entry contains the package info)
+ */
+ if (this_name->info.expected_btypes & ACPI_RTYPE_PACKAGE) {
+ this_name++;
+ }
+
+ this_name++;
+ }
+
+ return (NULL); /* Not found */
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ns_check_package
+ *
+ * PARAMETERS: Data - Pointer to validation data structure
+ * return_object_ptr - Pointer to the object returned from the
+ * evaluation of a method or object
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Check a returned package object for the correct count and
+ * correct type of all sub-objects.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_ns_check_package(struct acpi_predefined_data *data,
+ union acpi_operand_object **return_object_ptr)
+{
+ union acpi_operand_object *return_object = *return_object_ptr;
+ const union acpi_predefined_info *package;
+ union acpi_operand_object **elements;
+ acpi_status status = AE_OK;
+ u32 expected_count;
+ u32 count;
+ u32 i;
+
+ ACPI_FUNCTION_NAME(ns_check_package);
+
+ /* The package info for this name is in the next table entry */
+
+ package = data->predefined + 1;
+
+ ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
+ "%s Validating return Package of Type %X, Count %X\n",
+ data->pathname, package->ret_info.type,
+ return_object->package.count));
+
+ /*
+ * For variable-length Packages, we can safely remove all embedded
+ * and trailing NULL package elements
+ */
+ acpi_ns_remove_null_elements(data, package->ret_info.type,
+ return_object);
+
+ /* Extract package count and elements array */
+
+ elements = return_object->package.elements;
+ count = return_object->package.count;
+
+ /* The package must have at least one element, else invalid */
+
+ if (!count) {
+ ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, data->node_flags,
+ "Return Package has no elements (empty)"));
+
+ return (AE_AML_OPERAND_VALUE);
+ }
+
+ /*
+ * Decode the type of the expected package contents
+ *
+ * PTYPE1 packages contain no subpackages
+ * PTYPE2 packages contain sub-packages
+ */
+ switch (package->ret_info.type) {
+ case ACPI_PTYPE1_FIXED:
+
+ /*
+ * The package count is fixed and there are no sub-packages
+ *
+ * If package is too small, exit.
+ * If package is larger than expected, issue warning but continue
+ */
+ expected_count =
+ package->ret_info.count1 + package->ret_info.count2;
+ if (count < expected_count) {
+ goto package_too_small;
+ } else if (count > expected_count) {
+ ACPI_DEBUG_PRINT((ACPI_DB_REPAIR,
+ "%s: Return Package is larger than needed - "
+ "found %u, expected %u\n",
+ data->pathname, count,
+ expected_count));
+ }
+
+ /* Validate all elements of the returned package */
+
+ status = acpi_ns_check_package_elements(data, elements,
+ package->ret_info.
+ object_type1,
+ package->ret_info.
+ count1,
+ package->ret_info.
+ object_type2,
+ package->ret_info.
+ count2, 0);
+ break;
+
+ case ACPI_PTYPE1_VAR:
+
+ /*
+ * The package count is variable, there are no sub-packages, and all
+ * elements must be of the same type
+ */
+ for (i = 0; i < count; i++) {
+ status = acpi_ns_check_object_type(data, elements,
+ package->ret_info.
+ object_type1, i);
+ if (ACPI_FAILURE(status)) {
+ return (status);
+ }
+ elements++;
+ }
+ break;
+
+ case ACPI_PTYPE1_OPTION:
+
+ /*
+ * The package count is variable, there are no sub-packages. There are
+ * a fixed number of required elements, and a variable number of
+ * optional elements.
+ *
+ * Check if package is at least as large as the minimum required
+ */
+ expected_count = package->ret_info3.count;
+ if (count < expected_count) {
+ goto package_too_small;
+ }
+
+ /* Variable number of sub-objects */
+
+ for (i = 0; i < count; i++) {
+ if (i < package->ret_info3.count) {
+
+ /* These are the required package elements (0, 1, or 2) */
+
+ status =
+ acpi_ns_check_object_type(data, elements,
+ package->
+ ret_info3.
+ object_type[i],
+ i);
+ if (ACPI_FAILURE(status)) {
+ return (status);
+ }
+ } else {
+ /* These are the optional package elements */
+
+ status =
+ acpi_ns_check_object_type(data, elements,
+ package->
+ ret_info3.
+ tail_object_type,
+ i);
+ if (ACPI_FAILURE(status)) {
+ return (status);
+ }
+ }
+ elements++;
+ }
+ break;
+
+ case ACPI_PTYPE2_REV_FIXED:
+
+ /* First element is the (Integer) revision */
+
+ status = acpi_ns_check_object_type(data, elements,
+ ACPI_RTYPE_INTEGER, 0);
+ if (ACPI_FAILURE(status)) {
+ return (status);
+ }
+
+ elements++;
+ count--;
+
+ /* Examine the sub-packages */
+
+ status =
+ acpi_ns_check_package_list(data, package, elements, count);
+ break;
+
+ case ACPI_PTYPE2_PKG_COUNT:
+
+ /* First element is the (Integer) count of sub-packages to follow */
+
+ status = acpi_ns_check_object_type(data, elements,
+ ACPI_RTYPE_INTEGER, 0);
+ if (ACPI_FAILURE(status)) {
+ return (status);
+ }
+
+ /*
+ * Count cannot be larger than the parent package length, but allow it
+ * to be smaller. The >= accounts for the Integer above.
+ */
+ expected_count = (u32) (*elements)->integer.value;
+ if (expected_count >= count) {
+ goto package_too_small;
+ }
+
+ count = expected_count;
+ elements++;
+
+ /* Examine the sub-packages */
+
+ status =
+ acpi_ns_check_package_list(data, package, elements, count);
+ break;
+
+ case ACPI_PTYPE2:
+ case ACPI_PTYPE2_FIXED:
+ case ACPI_PTYPE2_MIN:
+ case ACPI_PTYPE2_COUNT:
+ case ACPI_PTYPE2_FIX_VAR:
+
+ /*
+ * These types all return a single Package that consists of a
+ * variable number of sub-Packages.
+ *
+ * First, ensure that the first element is a sub-Package. If not,
+ * the BIOS may have incorrectly returned the object as a single
+ * package instead of a Package of Packages (a common error if
+ * there is only one entry). We may be able to repair this by
+ * wrapping the returned Package with a new outer Package.
+ */
+ if (*elements
+ && ((*elements)->common.type != ACPI_TYPE_PACKAGE)) {
+
+ /* Create the new outer package and populate it */
+
+ status =
+ acpi_ns_wrap_with_package(data, return_object,
+ return_object_ptr);
+ if (ACPI_FAILURE(status)) {
+ return (status);
+ }
+
+ /* Update locals to point to the new package (of 1 element) */
+
+ return_object = *return_object_ptr;
+ elements = return_object->package.elements;
+ count = 1;
+ }
+
+ /* Examine the sub-packages */
+
+ status =
+ acpi_ns_check_package_list(data, package, elements, count);
+ break;
+
+ default:
+
+ /* Should not get here if predefined info table is correct */
+
+ ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, data->node_flags,
+ "Invalid internal return type in table entry: %X",
+ package->ret_info.type));
+
+ return (AE_AML_INTERNAL);
+ }
+
+ return (status);
+
+package_too_small:
+
+ /* Error exit for the case with an incorrect package count */
+
+ ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, data->node_flags,
+ "Return Package is too small - found %u elements, expected %u",
+ count, expected_count));
+
+ return (AE_AML_OPERAND_VALUE);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ns_check_package_list
+ *
+ * PARAMETERS: Data - Pointer to validation data structure
+ * Package - Pointer to package-specific info for method
+ * Elements - Element list of parent package. All elements
+ * of this list should be of type Package.
+ * Count - Count of subpackages
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Examine a list of subpackages
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_ns_check_package_list(struct acpi_predefined_data *data,
+ const union acpi_predefined_info *package,
+ union acpi_operand_object **elements, u32 count)
+{
+ union acpi_operand_object *sub_package;
+ union acpi_operand_object **sub_elements;
+ acpi_status status;
+ u32 expected_count;
+ u32 i;
+ u32 j;
+
+ /*
+ * Validate each sub-Package in the parent Package
+ *
+ * NOTE: assumes list of sub-packages contains no NULL elements.
+ * Any NULL elements should have been removed by earlier call
+ * to acpi_ns_remove_null_elements.
+ */
+ for (i = 0; i < count; i++) {
+ sub_package = *elements;
+ sub_elements = sub_package->package.elements;
+ data->parent_package = sub_package;
+
+ /* Each sub-object must be of type Package */
+
+ status = acpi_ns_check_object_type(data, &sub_package,
+ ACPI_RTYPE_PACKAGE, i);
+ if (ACPI_FAILURE(status)) {
+ return (status);
+ }
+
+ /* Examine the different types of expected sub-packages */
+
+ data->parent_package = sub_package;
+ switch (package->ret_info.type) {
+ case ACPI_PTYPE2:
+ case ACPI_PTYPE2_PKG_COUNT:
+ case ACPI_PTYPE2_REV_FIXED:
+
+ /* Each subpackage has a fixed number of elements */
+
+ expected_count =
+ package->ret_info.count1 + package->ret_info.count2;
+ if (sub_package->package.count < expected_count) {
+ goto package_too_small;
+ }
+
+ status =
+ acpi_ns_check_package_elements(data, sub_elements,
+ package->ret_info.
+ object_type1,
+ package->ret_info.
+ count1,
+ package->ret_info.
+ object_type2,
+ package->ret_info.
+ count2, 0);
+ if (ACPI_FAILURE(status)) {
+ return (status);
+ }
+ break;
+
+ case ACPI_PTYPE2_FIX_VAR:
+ /*
+ * Each subpackage has a fixed number of elements and an
+ * optional element
+ */
+ expected_count =
+ package->ret_info.count1 + package->ret_info.count2;
+ if (sub_package->package.count < expected_count) {
+ goto package_too_small;
+ }
+
+ status =
+ acpi_ns_check_package_elements(data, sub_elements,
+ package->ret_info.
+ object_type1,
+ package->ret_info.
+ count1,
+ package->ret_info.
+ object_type2,
+ sub_package->package.
+ count -
+ package->ret_info.
+ count1, 0);
+ if (ACPI_FAILURE(status)) {
+ return (status);
+ }
+ break;
+
+ case ACPI_PTYPE2_FIXED:
+
+ /* Each sub-package has a fixed length */
+
+ expected_count = package->ret_info2.count;
+ if (sub_package->package.count < expected_count) {
+ goto package_too_small;
+ }
+
+ /* Check the type of each sub-package element */
+
+ for (j = 0; j < expected_count; j++) {
+ status =
+ acpi_ns_check_object_type(data,
+ &sub_elements[j],
+ package->
+ ret_info2.
+ object_type[j],
+ j);
+ if (ACPI_FAILURE(status)) {
+ return (status);
+ }
+ }
+ break;
+
+ case ACPI_PTYPE2_MIN:
+
+ /* Each sub-package has a variable but minimum length */
+
+ expected_count = package->ret_info.count1;
+ if (sub_package->package.count < expected_count) {
+ goto package_too_small;
+ }
+
+ /* Check the type of each sub-package element */
+
+ status =
+ acpi_ns_check_package_elements(data, sub_elements,
+ package->ret_info.
+ object_type1,
+ sub_package->package.
+ count, 0, 0, 0);
+ if (ACPI_FAILURE(status)) {
+ return (status);
+ }
+ break;
+
+ case ACPI_PTYPE2_COUNT:
+
+ /*
+ * First element is the (Integer) count of elements, including
+ * the count field (the ACPI name is num_elements)
+ */
+ status = acpi_ns_check_object_type(data, sub_elements,
+ ACPI_RTYPE_INTEGER,
+ 0);
+ if (ACPI_FAILURE(status)) {
+ return (status);
+ }
+
+ /*
+ * Make sure package is large enough for the Count and is
+ * is as large as the minimum size
+ */
+ expected_count = (u32)(*sub_elements)->integer.value;
+ if (sub_package->package.count < expected_count) {
+ goto package_too_small;
+ }
+ if (sub_package->package.count <
+ package->ret_info.count1) {
+ expected_count = package->ret_info.count1;
+ goto package_too_small;
+ }
+ if (expected_count == 0) {
+ /*
+ * Either the num_entries element was originally zero or it was
+ * a NULL element and repaired to an Integer of value zero.
+ * In either case, repair it by setting num_entries to be the
+ * actual size of the subpackage.
+ */
+ expected_count = sub_package->package.count;
+ (*sub_elements)->integer.value = expected_count;
+ }
+
+ /* Check the type of each sub-package element */
+
+ status =
+ acpi_ns_check_package_elements(data,
+ (sub_elements + 1),
+ package->ret_info.
+ object_type1,
+ (expected_count - 1),
+ 0, 0, 1);
+ if (ACPI_FAILURE(status)) {
+ return (status);
+ }
+ break;
+
+ default: /* Should not get here, type was validated by caller */
+
+ return (AE_AML_INTERNAL);
+ }
+
+ elements++;
+ }
+
+ return (AE_OK);
+
+package_too_small:
+
+ /* The sub-package count was smaller than required */
+
+ ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, data->node_flags,
+ "Return Sub-Package[%u] is too small - found %u elements, expected %u",
+ i, sub_package->package.count, expected_count));
+
+ return (AE_AML_OPERAND_VALUE);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ns_check_package_elements
+ *
+ * PARAMETERS: Data - Pointer to validation data structure
+ * Elements - Pointer to the package elements array
+ * Type1 - Object type for first group
+ * Count1 - Count for first group
+ * Type2 - Object type for second group
+ * Count2 - Count for second group
+ * start_index - Start of the first group of elements
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Check that all elements of a package are of the correct object
+ * type. Supports up to two groups of different object types.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_ns_check_package_elements(struct acpi_predefined_data *data,
+ union acpi_operand_object **elements,
+ u8 type1,
+ u32 count1,
+ u8 type2, u32 count2, u32 start_index)
+{
+ union acpi_operand_object **this_element = elements;
+ acpi_status status;
+ u32 i;
+
+ /*
+ * Up to two groups of package elements are supported by the data
+ * structure. All elements in each group must be of the same type.
+ * The second group can have a count of zero.
+ */
+ for (i = 0; i < count1; i++) {
+ status = acpi_ns_check_object_type(data, this_element,
+ type1, i + start_index);
+ if (ACPI_FAILURE(status)) {
+ return (status);
+ }
+ this_element++;
+ }
+
+ for (i = 0; i < count2; i++) {
+ status = acpi_ns_check_object_type(data, this_element,
+ type2,
+ (i + count1 + start_index));
+ if (ACPI_FAILURE(status)) {
+ return (status);
+ }
+ this_element++;
+ }
+
+ return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ns_check_object_type
+ *
+ * PARAMETERS: Data - Pointer to validation data structure
+ * return_object_ptr - Pointer to the object returned from the
+ * evaluation of a method or object
+ * expected_btypes - Bitmap of expected return type(s)
+ * package_index - Index of object within parent package (if
+ * applicable - ACPI_NOT_PACKAGE_ELEMENT
+ * otherwise)
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Check the type of the return object against the expected object
+ * type(s). Use of Btype allows multiple expected object types.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_ns_check_object_type(struct acpi_predefined_data *data,
+ union acpi_operand_object **return_object_ptr,
+ u32 expected_btypes, u32 package_index)
+{
+ union acpi_operand_object *return_object = *return_object_ptr;
+ acpi_status status = AE_OK;
+ u32 return_btype;
+ char type_buffer[48]; /* Room for 5 types */
+
+ /*
+ * If we get a NULL return_object here, it is a NULL package element.
+ * Since all extraneous NULL package elements were removed earlier by a
+ * call to acpi_ns_remove_null_elements, this is an unexpected NULL element.
+ * We will attempt to repair it.
+ */
+ if (!return_object) {
+ status = acpi_ns_repair_null_element(data, expected_btypes,
+ package_index,
+ return_object_ptr);
+ if (ACPI_SUCCESS(status)) {
+ return (AE_OK); /* Repair was successful */
+ }
+ goto type_error_exit;
+ }
+
+ /* A Namespace node should not get here, but make sure */
+
+ if (ACPI_GET_DESCRIPTOR_TYPE(return_object) == ACPI_DESC_TYPE_NAMED) {
+ ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, data->node_flags,
+ "Invalid return type - Found a Namespace node [%4.4s] type %s",
+ return_object->node.name.ascii,
+ acpi_ut_get_type_name(return_object->node.
+ type)));
+ return (AE_AML_OPERAND_TYPE);
+ }
+
+ /*
+ * Convert the object type (ACPI_TYPE_xxx) to a bitmapped object type.
+ * The bitmapped type allows multiple possible return types.
+ *
+ * Note, the cases below must handle all of the possible types returned
+ * from all of the predefined names (including elements of returned
+ * packages)
+ */
+ switch (return_object->common.type) {
+ case ACPI_TYPE_INTEGER:
+ return_btype = ACPI_RTYPE_INTEGER;
+ break;
+
+ case ACPI_TYPE_BUFFER:
+ return_btype = ACPI_RTYPE_BUFFER;
+ break;
+
+ case ACPI_TYPE_STRING:
+ return_btype = ACPI_RTYPE_STRING;
+ break;
+
+ case ACPI_TYPE_PACKAGE:
+ return_btype = ACPI_RTYPE_PACKAGE;
+ break;
+
+ case ACPI_TYPE_LOCAL_REFERENCE:
+ return_btype = ACPI_RTYPE_REFERENCE;
+ break;
+
+ default:
+ /* Not one of the supported objects, must be incorrect */
+
+ goto type_error_exit;
+ }
+
+ /* Is the object one of the expected types? */
+
+ if (return_btype & expected_btypes) {
+
+ /* For reference objects, check that the reference type is correct */
+
+ if (return_object->common.type == ACPI_TYPE_LOCAL_REFERENCE) {
+ status = acpi_ns_check_reference(data, return_object);
+ }
+
+ return (status);
+ }
+
+ /* Type mismatch -- attempt repair of the returned object */
+
+ status = acpi_ns_repair_object(data, expected_btypes,
+ package_index, return_object_ptr);
+ if (ACPI_SUCCESS(status)) {
+ return (AE_OK); /* Repair was successful */
+ }
+
+ type_error_exit:
+
+ /* Create a string with all expected types for this predefined object */
+
+ acpi_ns_get_expected_types(type_buffer, expected_btypes);
+
+ if (package_index == ACPI_NOT_PACKAGE_ELEMENT) {
+ ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, data->node_flags,
+ "Return type mismatch - found %s, expected %s",
+ acpi_ut_get_object_type_name
+ (return_object), type_buffer));
+ } else {
+ ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, data->node_flags,
+ "Return Package type mismatch at index %u - "
+ "found %s, expected %s", package_index,
+ acpi_ut_get_object_type_name
+ (return_object), type_buffer));
+ }
+
+ return (AE_AML_OPERAND_TYPE);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ns_check_reference
+ *
+ * PARAMETERS: Data - Pointer to validation data structure
+ * return_object - Object returned from the evaluation of a
+ * method or object
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Check a returned reference object for the correct reference
+ * type. The only reference type that can be returned from a
+ * predefined method is a named reference. All others are invalid.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_ns_check_reference(struct acpi_predefined_data *data,
+ union acpi_operand_object *return_object)
+{
+
+ /*
+ * Check the reference object for the correct reference type (opcode).
+ * The only type of reference that can be converted to an union acpi_object is
+ * a reference to a named object (reference class: NAME)
+ */
+ if (return_object->reference.class == ACPI_REFCLASS_NAME) {
+ return (AE_OK);
+ }
+
+ ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, data->node_flags,
+ "Return type mismatch - unexpected reference object type [%s] %2.2X",
+ acpi_ut_get_reference_name(return_object),
+ return_object->reference.class));
+
+ return (AE_AML_OPERAND_TYPE);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ns_get_expected_types
+ *
+ * PARAMETERS: Buffer - Pointer to where the string is returned
+ * expected_btypes - Bitmap of expected return type(s)
+ *
+ * RETURN: Buffer is populated with type names.
+ *
+ * DESCRIPTION: Translate the expected types bitmap into a string of ascii
+ * names of expected types, for use in warning messages.
+ *
+ ******************************************************************************/
+
+static void acpi_ns_get_expected_types(char *buffer, u32 expected_btypes)
+{
+ u32 this_rtype;
+ u32 i;
+ u32 j;
+
+ j = 1;
+ buffer[0] = 0;
+ this_rtype = ACPI_RTYPE_INTEGER;
+
+ for (i = 0; i < ACPI_NUM_RTYPES; i++) {
+
+ /* If one of the expected types, concatenate the name of this type */
+
+ if (expected_btypes & this_rtype) {
+ ACPI_STRCAT(buffer, &acpi_rtype_names[i][j]);
+ j = 0; /* Use name separator from now on */
+ }
+ this_rtype <<= 1; /* Next Rtype */
+ }
+}