1 // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
4  * Module Name: nsarguments - Validation of args for ACPI predefined methods
6  * Copyright (C) 2000 - 2023, Intel Corp.
22  * PARAMETERS:  info            - Method execution information block
41 	 * Also, ignore typecheck if warnings/errors if this method  in acpi_ns_check_argument_types()
42 	 * has already been evaluated at least once -- in order  in acpi_ns_check_argument_types()
45 	if (!info->predefined || (info->node->flags & ANOBJ_EVALUATED)) {  in acpi_ns_check_argument_types()
49 	arg_type_list = info->predefined->info.argument_list;  in acpi_ns_check_argument_types()
54 	for (i = 0; ((i < arg_count) && (i < info->param_count)); i++) {  in acpi_ns_check_argument_types()
56 		user_arg_type = info->parameters[i]->common.type;  in acpi_ns_check_argument_types()
61 			ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,  in acpi_ns_check_argument_types()
63 					      "Argument #%u type mismatch - "  in acpi_ns_check_argument_types()
70 			/* Prevent any additional typechecking for this method */  in acpi_ns_check_argument_types()
72 			info->node->flags |= ANOBJ_EVALUATED;  in acpi_ns_check_argument_types()
81  * PARAMETERS:  pathname        - Full pathname to the node (for error msgs)
82  *              node            - Namespace node for the method/object
83  *              predefined      - Pointer to entry in predefined name table
101 	if (!predefined || (node->flags & ANOBJ_EVALUATED)) {  in acpi_ns_check_acpi_compliance()
105 	/* Get the ACPI-required arg count from the predefined info table */  in acpi_ns_check_acpi_compliance()
108 	    METHOD_GET_ARG_COUNT(predefined->info.argument_list);  in acpi_ns_check_acpi_compliance()
111 	 * If this object is not a control method, we can check if the ACPI  in acpi_ns_check_acpi_compliance()
112 	 * spec requires that it be a method.  in acpi_ns_check_acpi_compliance()
114 	if (node->type != ACPI_TYPE_METHOD) {  in acpi_ns_check_acpi_compliance()
117 			/* Object requires args, must be implemented as a method */  in acpi_ns_check_acpi_compliance()
121 						    "Object (%s) must be a control method with %u arguments",  in acpi_ns_check_acpi_compliance()
122 						    acpi_ut_get_type_name(node->  in acpi_ns_check_acpi_compliance()
126 			   && !predefined->info.expected_btypes) {  in acpi_ns_check_acpi_compliance()
128 			/* Object requires no args and no return value, must be a method */  in acpi_ns_check_acpi_compliance()
132 						    "Object (%s) must be a control method "  in acpi_ns_check_acpi_compliance()
134 						    acpi_ut_get_type_name(node->  in acpi_ns_check_acpi_compliance()
142 	 * This is a control method.  in acpi_ns_check_acpi_compliance()
143 	 * Check that the ASL/AML-defined parameter count for this method  in acpi_ns_check_acpi_compliance()
144 	 * matches the ACPI-required parameter count  in acpi_ns_check_acpi_compliance()
151 	aml_param_count = node->object->method.param_count;  in acpi_ns_check_acpi_compliance()
155 					    "Insufficient arguments - "  in acpi_ns_check_acpi_compliance()
160 		   && !(predefined->info.  in acpi_ns_check_acpi_compliance()
163 					    "Excess arguments - "  in acpi_ns_check_acpi_compliance()
174  * PARAMETERS:  pathname        - Full pathname to the node (for error msgs)
175  *              node            - Namespace node for the method/object
176  *              user_param_count - Number of args passed in by the caller
177  *              predefined      - Pointer to entry in predefined name table
195 	if (node->flags & ANOBJ_EVALUATED) {  in acpi_ns_check_argument_count()
202 		 * against the count that is specified in the method/object.  in acpi_ns_check_argument_count()
204 		if (node->type != ACPI_TYPE_METHOD) {  in acpi_ns_check_argument_count()
208 						      "%u arguments were passed to a non-method ACPI object (%s)",  in acpi_ns_check_argument_count()
211 						      (node->type)));  in acpi_ns_check_argument_count()
218 		 * This is a control method. Check the parameter count.  in acpi_ns_check_argument_count()
220 		 * argument count declared for the method in the ASL/AML.  in acpi_ns_check_argument_count()
225 		 * Note: Too many arguments will not cause the method to  in acpi_ns_check_argument_count()
226 		 * fail. However, the method will fail if there are too few  in acpi_ns_check_argument_count()
227 		 * arguments and the method attempts to use one of the missing ones.  in acpi_ns_check_argument_count()
229 		aml_param_count = node->object->method.param_count;  in acpi_ns_check_argument_count()
234 					      "Insufficient arguments - "  in acpi_ns_check_argument_count()
235 					      "Caller passed %u, method requires %u",  in acpi_ns_check_argument_count()
241 					      "Excess arguments - "  in acpi_ns_check_argument_count()
242 					      "Caller passed %u, method requires %u",  in acpi_ns_check_argument_count()
251 	 * This is a predefined name. Validate the user-supplied parameter  in acpi_ns_check_argument_count()
253 	 * the method itself because what is important here is that the  in acpi_ns_check_argument_count()
255 	 * method was checked against the ACPI spec earlier.)  in acpi_ns_check_argument_count()
261 	    METHOD_GET_ARG_COUNT(predefined->info.argument_list);  in acpi_ns_check_argument_count()
265 				      "Insufficient arguments - "  in acpi_ns_check_argument_count()
269 		   !(predefined->info.argument_list & ARG_COUNT_IS_MINIMUM)) {  in acpi_ns_check_argument_count()
271 				      "Excess arguments - "  in acpi_ns_check_argument_count()