295 строки
10 KiB
C
295 строки
10 KiB
C
/******************************************************************************
|
|
*
|
|
* Module Name: nsarguments - Validation of args for ACPI predefined methods
|
|
*
|
|
*****************************************************************************/
|
|
|
|
/*
|
|
* Copyright (C) 2000 - 2016, 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.
|
|
*/
|
|
|
|
#include <acpi/acpi.h>
|
|
#include "accommon.h"
|
|
#include "acnamesp.h"
|
|
#include "acpredef.h"
|
|
|
|
#define _COMPONENT ACPI_NAMESPACE
|
|
ACPI_MODULE_NAME("nsarguments")
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ns_check_argument_types
|
|
*
|
|
* PARAMETERS: info - Method execution information block
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Check the incoming argument count and all argument types
|
|
* against the argument type list for a predefined name.
|
|
*
|
|
******************************************************************************/
|
|
void acpi_ns_check_argument_types(struct acpi_evaluate_info *info)
|
|
{
|
|
u16 arg_type_list;
|
|
u8 arg_count;
|
|
u8 arg_type;
|
|
u8 user_arg_type;
|
|
u32 i;
|
|
|
|
/* If not a predefined name, cannot typecheck args */
|
|
|
|
if (!info->predefined) {
|
|
return;
|
|
}
|
|
|
|
arg_type_list = info->predefined->info.argument_list;
|
|
arg_count = METHOD_GET_ARG_COUNT(arg_type_list);
|
|
|
|
/* Typecheck all arguments */
|
|
|
|
for (i = 0; ((i < arg_count) && (i < info->param_count)); i++) {
|
|
arg_type = METHOD_GET_NEXT_TYPE(arg_type_list);
|
|
user_arg_type = info->parameters[i]->common.type;
|
|
|
|
if (user_arg_type != arg_type) {
|
|
ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
|
|
ACPI_WARN_ALWAYS,
|
|
"Argument #%u type mismatch - "
|
|
"Found [%s], ACPI requires [%s]",
|
|
(i + 1),
|
|
acpi_ut_get_type_name
|
|
(user_arg_type),
|
|
acpi_ut_get_type_name(arg_type)));
|
|
}
|
|
}
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ns_check_acpi_compliance
|
|
*
|
|
* PARAMETERS: pathname - Full pathname to the node (for error msgs)
|
|
* node - Namespace node for the method/object
|
|
* predefined - Pointer to entry in predefined name table
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Check that the declared parameter count (in ASL/AML) for a
|
|
* predefined name is what is expected (matches what is defined in
|
|
* the ACPI specification for this predefined name.)
|
|
*
|
|
******************************************************************************/
|
|
|
|
void
|
|
acpi_ns_check_acpi_compliance(char *pathname,
|
|
struct acpi_namespace_node *node,
|
|
const union acpi_predefined_info *predefined)
|
|
{
|
|
u32 aml_param_count;
|
|
u32 required_param_count;
|
|
|
|
if (!predefined) {
|
|
return;
|
|
}
|
|
|
|
/* Get the ACPI-required arg count from the predefined info table */
|
|
|
|
required_param_count =
|
|
METHOD_GET_ARG_COUNT(predefined->info.argument_list);
|
|
|
|
/*
|
|
* If this object is not a control method, we can check if the ACPI
|
|
* spec requires that it be a method.
|
|
*/
|
|
if (node->type != ACPI_TYPE_METHOD) {
|
|
if (required_param_count > 0) {
|
|
|
|
/* Object requires args, must be implemented as a method */
|
|
|
|
ACPI_BIOS_ERROR_PREDEFINED((AE_INFO, pathname,
|
|
ACPI_WARN_ALWAYS,
|
|
"Object (%s) must be a control method with %u arguments",
|
|
acpi_ut_get_type_name(node->
|
|
type),
|
|
required_param_count));
|
|
} else if (!required_param_count
|
|
&& !predefined->info.expected_btypes) {
|
|
|
|
/* Object requires no args and no return value, must be a method */
|
|
|
|
ACPI_BIOS_ERROR_PREDEFINED((AE_INFO, pathname,
|
|
ACPI_WARN_ALWAYS,
|
|
"Object (%s) must be a control method "
|
|
"with no arguments and no return value",
|
|
acpi_ut_get_type_name(node->
|
|
type)));
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* This is a control method.
|
|
* Check that the ASL/AML-defined parameter count for this method
|
|
* matches the ACPI-required parameter count
|
|
*
|
|
* Some methods are allowed to have a "minimum" number of args (_SCP)
|
|
* because their definition in ACPI has changed over time.
|
|
*
|
|
* Note: These are BIOS errors in the declaration of the object
|
|
*/
|
|
aml_param_count = node->object->method.param_count;
|
|
|
|
if (aml_param_count < required_param_count) {
|
|
ACPI_BIOS_ERROR_PREDEFINED((AE_INFO, pathname, ACPI_WARN_ALWAYS,
|
|
"Insufficient arguments - "
|
|
"ASL declared %u, ACPI requires %u",
|
|
aml_param_count,
|
|
required_param_count));
|
|
} else if ((aml_param_count > required_param_count)
|
|
&& !(predefined->info.
|
|
argument_list & ARG_COUNT_IS_MINIMUM)) {
|
|
ACPI_BIOS_ERROR_PREDEFINED((AE_INFO, pathname, ACPI_WARN_ALWAYS,
|
|
"Excess arguments - "
|
|
"ASL declared %u, ACPI requires %u",
|
|
aml_param_count,
|
|
required_param_count));
|
|
}
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ns_check_argument_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 incoming argument count matches the declared
|
|
* parameter count (in the ASL/AML) for an object.
|
|
*
|
|
******************************************************************************/
|
|
|
|
void
|
|
acpi_ns_check_argument_count(char *pathname,
|
|
struct acpi_namespace_node *node,
|
|
u32 user_param_count,
|
|
const union acpi_predefined_info *predefined)
|
|
{
|
|
u32 aml_param_count;
|
|
u32 required_param_count;
|
|
|
|
if (!predefined) {
|
|
/*
|
|
* Not a predefined name. Check the incoming user argument count
|
|
* against the count that is specified in the method/object.
|
|
*/
|
|
if (node->type != ACPI_TYPE_METHOD) {
|
|
if (user_param_count) {
|
|
ACPI_INFO_PREDEFINED((AE_INFO, pathname,
|
|
ACPI_WARN_ALWAYS,
|
|
"%u arguments were passed to a non-method ACPI object (%s)",
|
|
user_param_count,
|
|
acpi_ut_get_type_name
|
|
(node->type)));
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* This is a control method. Check the parameter count.
|
|
* We can only check the incoming argument count against the
|
|
* argument count declared for the method in the ASL/AML.
|
|
*
|
|
* Emit a message if too few or too many arguments have been passed
|
|
* by the caller.
|
|
*
|
|
* Note: Too many arguments will 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.
|
|
*/
|
|
aml_param_count = node->object->method.param_count;
|
|
|
|
if (user_param_count < aml_param_count) {
|
|
ACPI_WARN_PREDEFINED((AE_INFO, pathname,
|
|
ACPI_WARN_ALWAYS,
|
|
"Insufficient arguments - "
|
|
"Caller passed %u, method requires %u",
|
|
user_param_count,
|
|
aml_param_count));
|
|
} else if (user_param_count > aml_param_count) {
|
|
ACPI_INFO_PREDEFINED((AE_INFO, pathname,
|
|
ACPI_WARN_ALWAYS,
|
|
"Excess arguments - "
|
|
"Caller passed %u, method requires %u",
|
|
user_param_count,
|
|
aml_param_count));
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* This is a predefined name. Validate the user-supplied parameter
|
|
* count against the ACPI specification. We don't validate against
|
|
* the method itself because what is important here is that the
|
|
* caller is in conformance with the spec. (The arg count for the
|
|
* method was checked against the ACPI spec earlier.)
|
|
*
|
|
* Some methods are allowed to have a "minimum" number of args (_SCP)
|
|
* because their definition in ACPI has changed over time.
|
|
*/
|
|
required_param_count =
|
|
METHOD_GET_ARG_COUNT(predefined->info.argument_list);
|
|
|
|
if (user_param_count < required_param_count) {
|
|
ACPI_WARN_PREDEFINED((AE_INFO, pathname, ACPI_WARN_ALWAYS,
|
|
"Insufficient arguments - "
|
|
"Caller passed %u, ACPI requires %u",
|
|
user_param_count, required_param_count));
|
|
} else if ((user_param_count > required_param_count) &&
|
|
!(predefined->info.argument_list & ARG_COUNT_IS_MINIMUM)) {
|
|
ACPI_INFO_PREDEFINED((AE_INFO, pathname, ACPI_WARN_ALWAYS,
|
|
"Excess arguments - "
|
|
"Caller passed %u, ACPI requires %u",
|
|
user_param_count, required_param_count));
|
|
}
|
|
}
|