17b1019a6SJerry Jelinek /******************************************************************************
27b1019a6SJerry Jelinek *
37b1019a6SJerry Jelinek * Module Name: nsarguments - Validation of args for ACPI predefined methods
47b1019a6SJerry Jelinek *
57b1019a6SJerry Jelinek *****************************************************************************/
67b1019a6SJerry Jelinek
7*35786f68SRobert Mustacchi /******************************************************************************
8*35786f68SRobert Mustacchi *
9*35786f68SRobert Mustacchi * 1. Copyright Notice
10*35786f68SRobert Mustacchi *
11*35786f68SRobert Mustacchi * Some or all of this work - Copyright (c) 1999 - 2018, Intel Corp.
127b1019a6SJerry Jelinek * All rights reserved.
137b1019a6SJerry Jelinek *
14*35786f68SRobert Mustacchi * 2. License
15*35786f68SRobert Mustacchi *
16*35786f68SRobert Mustacchi * 2.1. This is your license from Intel Corp. under its intellectual property
17*35786f68SRobert Mustacchi * rights. You may have additional license terms from the party that provided
18*35786f68SRobert Mustacchi * you this software, covering your right to use that party's intellectual
19*35786f68SRobert Mustacchi * property rights.
20*35786f68SRobert Mustacchi *
21*35786f68SRobert Mustacchi * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
22*35786f68SRobert Mustacchi * copy of the source code appearing in this file ("Covered Code") an
23*35786f68SRobert Mustacchi * irrevocable, perpetual, worldwide license under Intel's copyrights in the
24*35786f68SRobert Mustacchi * base code distributed originally by Intel ("Original Intel Code") to copy,
25*35786f68SRobert Mustacchi * make derivatives, distribute, use and display any portion of the Covered
26*35786f68SRobert Mustacchi * Code in any form, with the right to sublicense such rights; and
27*35786f68SRobert Mustacchi *
28*35786f68SRobert Mustacchi * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
29*35786f68SRobert Mustacchi * license (with the right to sublicense), under only those claims of Intel
30*35786f68SRobert Mustacchi * patents that are infringed by the Original Intel Code, to make, use, sell,
31*35786f68SRobert Mustacchi * offer to sell, and import the Covered Code and derivative works thereof
32*35786f68SRobert Mustacchi * solely to the minimum extent necessary to exercise the above copyright
33*35786f68SRobert Mustacchi * license, and in no event shall the patent license extend to any additions
34*35786f68SRobert Mustacchi * to or modifications of the Original Intel Code. No other license or right
35*35786f68SRobert Mustacchi * is granted directly or by implication, estoppel or otherwise;
36*35786f68SRobert Mustacchi *
37*35786f68SRobert Mustacchi * The above copyright and patent license is granted only if the following
38*35786f68SRobert Mustacchi * conditions are met:
39*35786f68SRobert Mustacchi *
40*35786f68SRobert Mustacchi * 3. Conditions
41*35786f68SRobert Mustacchi *
42*35786f68SRobert Mustacchi * 3.1. Redistribution of Source with Rights to Further Distribute Source.
43*35786f68SRobert Mustacchi * Redistribution of source code of any substantial portion of the Covered
44*35786f68SRobert Mustacchi * Code or modification with rights to further distribute source must include
45*35786f68SRobert Mustacchi * the above Copyright Notice, the above License, this list of Conditions,
46*35786f68SRobert Mustacchi * and the following Disclaimer and Export Compliance provision. In addition,
47*35786f68SRobert Mustacchi * Licensee must cause all Covered Code to which Licensee contributes to
48*35786f68SRobert Mustacchi * contain a file documenting the changes Licensee made to create that Covered
49*35786f68SRobert Mustacchi * Code and the date of any change. Licensee must include in that file the
50*35786f68SRobert Mustacchi * documentation of any changes made by any predecessor Licensee. Licensee
51*35786f68SRobert Mustacchi * must include a prominent statement that the modification is derived,
52*35786f68SRobert Mustacchi * directly or indirectly, from Original Intel Code.
53*35786f68SRobert Mustacchi *
54*35786f68SRobert Mustacchi * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
55*35786f68SRobert Mustacchi * Redistribution of source code of any substantial portion of the Covered
56*35786f68SRobert Mustacchi * Code or modification without rights to further distribute source must
57*35786f68SRobert Mustacchi * include the following Disclaimer and Export Compliance provision in the
58*35786f68SRobert Mustacchi * documentation and/or other materials provided with distribution. In
59*35786f68SRobert Mustacchi * addition, Licensee may not authorize further sublicense of source of any
60*35786f68SRobert Mustacchi * portion of the Covered Code, and must include terms to the effect that the
61*35786f68SRobert Mustacchi * license from Licensee to its licensee is limited to the intellectual
62*35786f68SRobert Mustacchi * property embodied in the software Licensee provides to its licensee, and
63*35786f68SRobert Mustacchi * not to intellectual property embodied in modifications its licensee may
64*35786f68SRobert Mustacchi * make.
65*35786f68SRobert Mustacchi *
66*35786f68SRobert Mustacchi * 3.3. Redistribution of Executable. Redistribution in executable form of any
67*35786f68SRobert Mustacchi * substantial portion of the Covered Code or modification must reproduce the
68*35786f68SRobert Mustacchi * above Copyright Notice, and the following Disclaimer and Export Compliance
69*35786f68SRobert Mustacchi * provision in the documentation and/or other materials provided with the
70*35786f68SRobert Mustacchi * distribution.
71*35786f68SRobert Mustacchi *
72*35786f68SRobert Mustacchi * 3.4. Intel retains all right, title, and interest in and to the Original
73*35786f68SRobert Mustacchi * Intel Code.
74*35786f68SRobert Mustacchi *
75*35786f68SRobert Mustacchi * 3.5. Neither the name Intel nor any other trademark owned or controlled by
76*35786f68SRobert Mustacchi * Intel shall be used in advertising or otherwise to promote the sale, use or
77*35786f68SRobert Mustacchi * other dealings in products derived from or relating to the Covered Code
78*35786f68SRobert Mustacchi * without prior written authorization from Intel.
79*35786f68SRobert Mustacchi *
80*35786f68SRobert Mustacchi * 4. Disclaimer and Export Compliance
81*35786f68SRobert Mustacchi *
82*35786f68SRobert Mustacchi * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
83*35786f68SRobert Mustacchi * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
84*35786f68SRobert Mustacchi * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
85*35786f68SRobert Mustacchi * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
86*35786f68SRobert Mustacchi * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
87*35786f68SRobert Mustacchi * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
88*35786f68SRobert Mustacchi * PARTICULAR PURPOSE.
89*35786f68SRobert Mustacchi *
90*35786f68SRobert Mustacchi * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
91*35786f68SRobert Mustacchi * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
92*35786f68SRobert Mustacchi * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
93*35786f68SRobert Mustacchi * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
94*35786f68SRobert Mustacchi * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
95*35786f68SRobert Mustacchi * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
96*35786f68SRobert Mustacchi * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
97*35786f68SRobert Mustacchi * LIMITED REMEDY.
98*35786f68SRobert Mustacchi *
99*35786f68SRobert Mustacchi * 4.3. Licensee shall not export, either directly or indirectly, any of this
100*35786f68SRobert Mustacchi * software or system incorporating such software without first obtaining any
101*35786f68SRobert Mustacchi * required license or other approval from the U. S. Department of Commerce or
102*35786f68SRobert Mustacchi * any other agency or department of the United States Government. In the
103*35786f68SRobert Mustacchi * event Licensee exports any such software from the United States or
104*35786f68SRobert Mustacchi * re-exports any such software from a foreign destination, Licensee shall
105*35786f68SRobert Mustacchi * ensure that the distribution and export/re-export of the software is in
106*35786f68SRobert Mustacchi * compliance with all laws, regulations, orders, or other restrictions of the
107*35786f68SRobert Mustacchi * U.S. Export Administration Regulations. Licensee agrees that neither it nor
108*35786f68SRobert Mustacchi * any of its subsidiaries will export/re-export any technical data, process,
109*35786f68SRobert Mustacchi * software, or service, directly or indirectly, to any country for which the
110*35786f68SRobert Mustacchi * United States government or any agency thereof requires an export license,
111*35786f68SRobert Mustacchi * other governmental approval, or letter of assurance, without first obtaining
112*35786f68SRobert Mustacchi * such license, approval or letter.
113*35786f68SRobert Mustacchi *
114*35786f68SRobert Mustacchi *****************************************************************************
115*35786f68SRobert Mustacchi *
116*35786f68SRobert Mustacchi * Alternatively, you may choose to be licensed under the terms of the
117*35786f68SRobert Mustacchi * following license:
118*35786f68SRobert Mustacchi *
1197b1019a6SJerry Jelinek * Redistribution and use in source and binary forms, with or without
1207b1019a6SJerry Jelinek * modification, are permitted provided that the following conditions
1217b1019a6SJerry Jelinek * are met:
1227b1019a6SJerry Jelinek * 1. Redistributions of source code must retain the above copyright
1237b1019a6SJerry Jelinek * notice, this list of conditions, and the following disclaimer,
1247b1019a6SJerry Jelinek * without modification.
1257b1019a6SJerry Jelinek * 2. Redistributions in binary form must reproduce at minimum a disclaimer
1267b1019a6SJerry Jelinek * substantially similar to the "NO WARRANTY" disclaimer below
1277b1019a6SJerry Jelinek * ("Disclaimer") and any redistribution must be conditioned upon
1287b1019a6SJerry Jelinek * including a substantially similar Disclaimer requirement for further
1297b1019a6SJerry Jelinek * binary redistribution.
1307b1019a6SJerry Jelinek * 3. Neither the names of the above-listed copyright holders nor the names
1317b1019a6SJerry Jelinek * of any contributors may be used to endorse or promote products derived
1327b1019a6SJerry Jelinek * from this software without specific prior written permission.
1337b1019a6SJerry Jelinek *
1347b1019a6SJerry Jelinek * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
1357b1019a6SJerry Jelinek * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
136*35786f68SRobert Mustacchi * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
1377b1019a6SJerry Jelinek * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
138*35786f68SRobert Mustacchi * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
139*35786f68SRobert Mustacchi * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
140*35786f68SRobert Mustacchi * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
141*35786f68SRobert Mustacchi * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
142*35786f68SRobert Mustacchi * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
143*35786f68SRobert Mustacchi * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
144*35786f68SRobert Mustacchi * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
145*35786f68SRobert Mustacchi *
146*35786f68SRobert Mustacchi * Alternatively, you may choose to be licensed under the terms of the
147*35786f68SRobert Mustacchi * GNU General Public License ("GPL") version 2 as published by the Free
148*35786f68SRobert Mustacchi * Software Foundation.
149*35786f68SRobert Mustacchi *
150*35786f68SRobert Mustacchi *****************************************************************************/
1517b1019a6SJerry Jelinek
1527b1019a6SJerry Jelinek #include "acpi.h"
1537b1019a6SJerry Jelinek #include "accommon.h"
1547b1019a6SJerry Jelinek #include "acnamesp.h"
1557b1019a6SJerry Jelinek #include "acpredef.h"
1567b1019a6SJerry Jelinek
1577b1019a6SJerry Jelinek
1587b1019a6SJerry Jelinek #define _COMPONENT ACPI_NAMESPACE
1597b1019a6SJerry Jelinek ACPI_MODULE_NAME ("nsarguments")
1607b1019a6SJerry Jelinek
1617b1019a6SJerry Jelinek
1627b1019a6SJerry Jelinek /*******************************************************************************
1637b1019a6SJerry Jelinek *
1647b1019a6SJerry Jelinek * FUNCTION: AcpiNsCheckArgumentTypes
1657b1019a6SJerry Jelinek *
1667b1019a6SJerry Jelinek * PARAMETERS: Info - Method execution information block
1677b1019a6SJerry Jelinek *
1687b1019a6SJerry Jelinek * RETURN: None
1697b1019a6SJerry Jelinek *
1707b1019a6SJerry Jelinek * DESCRIPTION: Check the incoming argument count and all argument types
1717b1019a6SJerry Jelinek * against the argument type list for a predefined name.
1727b1019a6SJerry Jelinek *
1737b1019a6SJerry Jelinek ******************************************************************************/
1747b1019a6SJerry Jelinek
1757b1019a6SJerry Jelinek void
AcpiNsCheckArgumentTypes(ACPI_EVALUATE_INFO * Info)1767b1019a6SJerry Jelinek AcpiNsCheckArgumentTypes (
1777b1019a6SJerry Jelinek ACPI_EVALUATE_INFO *Info)
1787b1019a6SJerry Jelinek {
1797b1019a6SJerry Jelinek UINT16 ArgTypeList;
1807b1019a6SJerry Jelinek UINT8 ArgCount;
1817b1019a6SJerry Jelinek UINT8 ArgType;
1827b1019a6SJerry Jelinek UINT8 UserArgType;
1837b1019a6SJerry Jelinek UINT32 i;
1847b1019a6SJerry Jelinek
1857b1019a6SJerry Jelinek
186*35786f68SRobert Mustacchi /*
187*35786f68SRobert Mustacchi * If not a predefined name, cannot typecheck args, because
188*35786f68SRobert Mustacchi * we have no idea what argument types are expected.
189*35786f68SRobert Mustacchi * Also, ignore typecheck if warnings/errors if this method
190*35786f68SRobert Mustacchi * has already been evaluated at least once -- in order
191*35786f68SRobert Mustacchi * to suppress repetitive messages.
192*35786f68SRobert Mustacchi */
193*35786f68SRobert Mustacchi if (!Info->Predefined || (Info->Node->Flags & ANOBJ_EVALUATED))
1947b1019a6SJerry Jelinek {
1957b1019a6SJerry Jelinek return;
1967b1019a6SJerry Jelinek }
1977b1019a6SJerry Jelinek
1987b1019a6SJerry Jelinek ArgTypeList = Info->Predefined->Info.ArgumentList;
1997b1019a6SJerry Jelinek ArgCount = METHOD_GET_ARG_COUNT (ArgTypeList);
2007b1019a6SJerry Jelinek
2017b1019a6SJerry Jelinek /* Typecheck all arguments */
2027b1019a6SJerry Jelinek
2037b1019a6SJerry Jelinek for (i = 0; ((i < ArgCount) && (i < Info->ParamCount)); i++)
2047b1019a6SJerry Jelinek {
2057b1019a6SJerry Jelinek ArgType = METHOD_GET_NEXT_TYPE (ArgTypeList);
2067b1019a6SJerry Jelinek UserArgType = Info->Parameters[i]->Common.Type;
2077b1019a6SJerry Jelinek
2087b1019a6SJerry Jelinek if (UserArgType != ArgType)
2097b1019a6SJerry Jelinek {
2107b1019a6SJerry Jelinek ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname, ACPI_WARN_ALWAYS,
2117b1019a6SJerry Jelinek "Argument #%u type mismatch - "
2127b1019a6SJerry Jelinek "Found [%s], ACPI requires [%s]", (i + 1),
2137b1019a6SJerry Jelinek AcpiUtGetTypeName (UserArgType),
2147b1019a6SJerry Jelinek AcpiUtGetTypeName (ArgType)));
215*35786f68SRobert Mustacchi
216*35786f68SRobert Mustacchi /* Prevent any additional typechecking for this method */
217*35786f68SRobert Mustacchi
218*35786f68SRobert Mustacchi Info->Node->Flags |= ANOBJ_EVALUATED;
2197b1019a6SJerry Jelinek }
2207b1019a6SJerry Jelinek }
2217b1019a6SJerry Jelinek }
2227b1019a6SJerry Jelinek
2237b1019a6SJerry Jelinek
2247b1019a6SJerry Jelinek /*******************************************************************************
2257b1019a6SJerry Jelinek *
2267b1019a6SJerry Jelinek * FUNCTION: AcpiNsCheckAcpiCompliance
2277b1019a6SJerry Jelinek *
2287b1019a6SJerry Jelinek * PARAMETERS: Pathname - Full pathname to the node (for error msgs)
2297b1019a6SJerry Jelinek * Node - Namespace node for the method/object
2307b1019a6SJerry Jelinek * Predefined - Pointer to entry in predefined name table
2317b1019a6SJerry Jelinek *
2327b1019a6SJerry Jelinek * RETURN: None
2337b1019a6SJerry Jelinek *
2347b1019a6SJerry Jelinek * DESCRIPTION: Check that the declared parameter count (in ASL/AML) for a
2357b1019a6SJerry Jelinek * predefined name is what is expected (matches what is defined in
2367b1019a6SJerry Jelinek * the ACPI specification for this predefined name.)
2377b1019a6SJerry Jelinek *
2387b1019a6SJerry Jelinek ******************************************************************************/
2397b1019a6SJerry Jelinek
2407b1019a6SJerry Jelinek void
AcpiNsCheckAcpiCompliance(char * Pathname,ACPI_NAMESPACE_NODE * Node,const ACPI_PREDEFINED_INFO * Predefined)2417b1019a6SJerry Jelinek AcpiNsCheckAcpiCompliance (
2427b1019a6SJerry Jelinek char *Pathname,
2437b1019a6SJerry Jelinek ACPI_NAMESPACE_NODE *Node,
2447b1019a6SJerry Jelinek const ACPI_PREDEFINED_INFO *Predefined)
2457b1019a6SJerry Jelinek {
2467b1019a6SJerry Jelinek UINT32 AmlParamCount;
2477b1019a6SJerry Jelinek UINT32 RequiredParamCount;
2487b1019a6SJerry Jelinek
2497b1019a6SJerry Jelinek
250*35786f68SRobert Mustacchi if (!Predefined || (Node->Flags & ANOBJ_EVALUATED))
2517b1019a6SJerry Jelinek {
2527b1019a6SJerry Jelinek return;
2537b1019a6SJerry Jelinek }
2547b1019a6SJerry Jelinek
2557b1019a6SJerry Jelinek /* Get the ACPI-required arg count from the predefined info table */
2567b1019a6SJerry Jelinek
2577b1019a6SJerry Jelinek RequiredParamCount =
2587b1019a6SJerry Jelinek METHOD_GET_ARG_COUNT (Predefined->Info.ArgumentList);
2597b1019a6SJerry Jelinek
2607b1019a6SJerry Jelinek /*
2617b1019a6SJerry Jelinek * If this object is not a control method, we can check if the ACPI
2627b1019a6SJerry Jelinek * spec requires that it be a method.
2637b1019a6SJerry Jelinek */
2647b1019a6SJerry Jelinek if (Node->Type != ACPI_TYPE_METHOD)
2657b1019a6SJerry Jelinek {
2667b1019a6SJerry Jelinek if (RequiredParamCount > 0)
2677b1019a6SJerry Jelinek {
2687b1019a6SJerry Jelinek /* Object requires args, must be implemented as a method */
2697b1019a6SJerry Jelinek
2707b1019a6SJerry Jelinek ACPI_BIOS_ERROR_PREDEFINED ((AE_INFO, Pathname, ACPI_WARN_ALWAYS,
2717b1019a6SJerry Jelinek "Object (%s) must be a control method with %u arguments",
2727b1019a6SJerry Jelinek AcpiUtGetTypeName (Node->Type), RequiredParamCount));
2737b1019a6SJerry Jelinek }
2747b1019a6SJerry Jelinek else if (!RequiredParamCount && !Predefined->Info.ExpectedBtypes)
2757b1019a6SJerry Jelinek {
2767b1019a6SJerry Jelinek /* Object requires no args and no return value, must be a method */
2777b1019a6SJerry Jelinek
2787b1019a6SJerry Jelinek ACPI_BIOS_ERROR_PREDEFINED ((AE_INFO, Pathname, ACPI_WARN_ALWAYS,
2797b1019a6SJerry Jelinek "Object (%s) must be a control method "
2807b1019a6SJerry Jelinek "with no arguments and no return value",
2817b1019a6SJerry Jelinek AcpiUtGetTypeName (Node->Type)));
2827b1019a6SJerry Jelinek }
2837b1019a6SJerry Jelinek
2847b1019a6SJerry Jelinek return;
2857b1019a6SJerry Jelinek }
2867b1019a6SJerry Jelinek
2877b1019a6SJerry Jelinek /*
2887b1019a6SJerry Jelinek * This is a control method.
2897b1019a6SJerry Jelinek * Check that the ASL/AML-defined parameter count for this method
2907b1019a6SJerry Jelinek * matches the ACPI-required parameter count
2917b1019a6SJerry Jelinek *
2927b1019a6SJerry Jelinek * Some methods are allowed to have a "minimum" number of args (_SCP)
2937b1019a6SJerry Jelinek * because their definition in ACPI has changed over time.
2947b1019a6SJerry Jelinek *
2957b1019a6SJerry Jelinek * Note: These are BIOS errors in the declaration of the object
2967b1019a6SJerry Jelinek */
2977b1019a6SJerry Jelinek AmlParamCount = Node->Object->Method.ParamCount;
2987b1019a6SJerry Jelinek
2997b1019a6SJerry Jelinek if (AmlParamCount < RequiredParamCount)
3007b1019a6SJerry Jelinek {
3017b1019a6SJerry Jelinek ACPI_BIOS_ERROR_PREDEFINED ((AE_INFO, Pathname, ACPI_WARN_ALWAYS,
3027b1019a6SJerry Jelinek "Insufficient arguments - "
3037b1019a6SJerry Jelinek "ASL declared %u, ACPI requires %u",
3047b1019a6SJerry Jelinek AmlParamCount, RequiredParamCount));
3057b1019a6SJerry Jelinek }
3067b1019a6SJerry Jelinek else if ((AmlParamCount > RequiredParamCount) &&
3077b1019a6SJerry Jelinek !(Predefined->Info.ArgumentList & ARG_COUNT_IS_MINIMUM))
3087b1019a6SJerry Jelinek {
3097b1019a6SJerry Jelinek ACPI_BIOS_ERROR_PREDEFINED ((AE_INFO, Pathname, ACPI_WARN_ALWAYS,
3107b1019a6SJerry Jelinek "Excess arguments - "
3117b1019a6SJerry Jelinek "ASL declared %u, ACPI requires %u",
3127b1019a6SJerry Jelinek AmlParamCount, RequiredParamCount));
3137b1019a6SJerry Jelinek }
3147b1019a6SJerry Jelinek }
3157b1019a6SJerry Jelinek
3167b1019a6SJerry Jelinek
3177b1019a6SJerry Jelinek /*******************************************************************************
3187b1019a6SJerry Jelinek *
3197b1019a6SJerry Jelinek * FUNCTION: AcpiNsCheckArgumentCount
3207b1019a6SJerry Jelinek *
3217b1019a6SJerry Jelinek * PARAMETERS: Pathname - Full pathname to the node (for error msgs)
3227b1019a6SJerry Jelinek * Node - Namespace node for the method/object
3237b1019a6SJerry Jelinek * UserParamCount - Number of args passed in by the caller
3247b1019a6SJerry Jelinek * Predefined - Pointer to entry in predefined name table
3257b1019a6SJerry Jelinek *
3267b1019a6SJerry Jelinek * RETURN: None
3277b1019a6SJerry Jelinek *
3287b1019a6SJerry Jelinek * DESCRIPTION: Check that incoming argument count matches the declared
3297b1019a6SJerry Jelinek * parameter count (in the ASL/AML) for an object.
3307b1019a6SJerry Jelinek *
3317b1019a6SJerry Jelinek ******************************************************************************/
3327b1019a6SJerry Jelinek
3337b1019a6SJerry Jelinek void
AcpiNsCheckArgumentCount(char * Pathname,ACPI_NAMESPACE_NODE * Node,UINT32 UserParamCount,const ACPI_PREDEFINED_INFO * Predefined)3347b1019a6SJerry Jelinek AcpiNsCheckArgumentCount (
3357b1019a6SJerry Jelinek char *Pathname,
3367b1019a6SJerry Jelinek ACPI_NAMESPACE_NODE *Node,
3377b1019a6SJerry Jelinek UINT32 UserParamCount,
3387b1019a6SJerry Jelinek const ACPI_PREDEFINED_INFO *Predefined)
3397b1019a6SJerry Jelinek {
3407b1019a6SJerry Jelinek UINT32 AmlParamCount;
3417b1019a6SJerry Jelinek UINT32 RequiredParamCount;
3427b1019a6SJerry Jelinek
3437b1019a6SJerry Jelinek
344*35786f68SRobert Mustacchi if (Node->Flags & ANOBJ_EVALUATED)
345*35786f68SRobert Mustacchi {
346*35786f68SRobert Mustacchi return;
347*35786f68SRobert Mustacchi }
348*35786f68SRobert Mustacchi
3497b1019a6SJerry Jelinek if (!Predefined)
3507b1019a6SJerry Jelinek {
3517b1019a6SJerry Jelinek /*
3527b1019a6SJerry Jelinek * Not a predefined name. Check the incoming user argument count
3537b1019a6SJerry Jelinek * against the count that is specified in the method/object.
3547b1019a6SJerry Jelinek */
3557b1019a6SJerry Jelinek if (Node->Type != ACPI_TYPE_METHOD)
3567b1019a6SJerry Jelinek {
3577b1019a6SJerry Jelinek if (UserParamCount)
3587b1019a6SJerry Jelinek {
3597b1019a6SJerry Jelinek ACPI_INFO_PREDEFINED ((AE_INFO, Pathname, ACPI_WARN_ALWAYS,
3607b1019a6SJerry Jelinek "%u arguments were passed to a non-method ACPI object (%s)",
3617b1019a6SJerry Jelinek UserParamCount, AcpiUtGetTypeName (Node->Type)));
3627b1019a6SJerry Jelinek }
3637b1019a6SJerry Jelinek
3647b1019a6SJerry Jelinek return;
3657b1019a6SJerry Jelinek }
3667b1019a6SJerry Jelinek
3677b1019a6SJerry Jelinek /*
3687b1019a6SJerry Jelinek * This is a control method. Check the parameter count.
3697b1019a6SJerry Jelinek * We can only check the incoming argument count against the
3707b1019a6SJerry Jelinek * argument count declared for the method in the ASL/AML.
3717b1019a6SJerry Jelinek *
3727b1019a6SJerry Jelinek * Emit a message if too few or too many arguments have been passed
3737b1019a6SJerry Jelinek * by the caller.
3747b1019a6SJerry Jelinek *
3757b1019a6SJerry Jelinek * Note: Too many arguments will not cause the method to
3767b1019a6SJerry Jelinek * fail. However, the method will fail if there are too few
3777b1019a6SJerry Jelinek * arguments and the method attempts to use one of the missing ones.
3787b1019a6SJerry Jelinek */
3797b1019a6SJerry Jelinek AmlParamCount = Node->Object->Method.ParamCount;
3807b1019a6SJerry Jelinek
3817b1019a6SJerry Jelinek if (UserParamCount < AmlParamCount)
3827b1019a6SJerry Jelinek {
3837b1019a6SJerry Jelinek ACPI_WARN_PREDEFINED ((AE_INFO, Pathname, ACPI_WARN_ALWAYS,
3847b1019a6SJerry Jelinek "Insufficient arguments - "
3857b1019a6SJerry Jelinek "Caller passed %u, method requires %u",
3867b1019a6SJerry Jelinek UserParamCount, AmlParamCount));
3877b1019a6SJerry Jelinek }
3887b1019a6SJerry Jelinek else if (UserParamCount > AmlParamCount)
3897b1019a6SJerry Jelinek {
3907b1019a6SJerry Jelinek ACPI_INFO_PREDEFINED ((AE_INFO, Pathname, ACPI_WARN_ALWAYS,
3917b1019a6SJerry Jelinek "Excess arguments - "
3927b1019a6SJerry Jelinek "Caller passed %u, method requires %u",
3937b1019a6SJerry Jelinek UserParamCount, AmlParamCount));
3947b1019a6SJerry Jelinek }
3957b1019a6SJerry Jelinek
3967b1019a6SJerry Jelinek return;
3977b1019a6SJerry Jelinek }
3987b1019a6SJerry Jelinek
3997b1019a6SJerry Jelinek /*
4007b1019a6SJerry Jelinek * This is a predefined name. Validate the user-supplied parameter
4017b1019a6SJerry Jelinek * count against the ACPI specification. We don't validate against
4027b1019a6SJerry Jelinek * the method itself because what is important here is that the
4037b1019a6SJerry Jelinek * caller is in conformance with the spec. (The arg count for the
4047b1019a6SJerry Jelinek * method was checked against the ACPI spec earlier.)
4057b1019a6SJerry Jelinek *
4067b1019a6SJerry Jelinek * Some methods are allowed to have a "minimum" number of args (_SCP)
4077b1019a6SJerry Jelinek * because their definition in ACPI has changed over time.
4087b1019a6SJerry Jelinek */
4097b1019a6SJerry Jelinek RequiredParamCount =
4107b1019a6SJerry Jelinek METHOD_GET_ARG_COUNT (Predefined->Info.ArgumentList);
4117b1019a6SJerry Jelinek
4127b1019a6SJerry Jelinek if (UserParamCount < RequiredParamCount)
4137b1019a6SJerry Jelinek {
4147b1019a6SJerry Jelinek ACPI_WARN_PREDEFINED ((AE_INFO, Pathname, ACPI_WARN_ALWAYS,
4157b1019a6SJerry Jelinek "Insufficient arguments - "
4167b1019a6SJerry Jelinek "Caller passed %u, ACPI requires %u",
4177b1019a6SJerry Jelinek UserParamCount, RequiredParamCount));
4187b1019a6SJerry Jelinek }
4197b1019a6SJerry Jelinek else if ((UserParamCount > RequiredParamCount) &&
4207b1019a6SJerry Jelinek !(Predefined->Info.ArgumentList & ARG_COUNT_IS_MINIMUM))
4217b1019a6SJerry Jelinek {
4227b1019a6SJerry Jelinek ACPI_INFO_PREDEFINED ((AE_INFO, Pathname, ACPI_WARN_ALWAYS,
4237b1019a6SJerry Jelinek "Excess arguments - "
4247b1019a6SJerry Jelinek "Caller passed %u, ACPI requires %u",
4257b1019a6SJerry Jelinek UserParamCount, RequiredParamCount));
4267b1019a6SJerry Jelinek }
4277b1019a6SJerry Jelinek }
428