1 /******************************************************************************
3 * Module Name: nsparse - namespace interface to AML parser
6 *****************************************************************************/
8 /******************************************************************************
12 * Some or all of this work - Copyright (c) 1999 - 2007, Intel Corp.
13 * All rights reserved.
17 * 2.1. This is your license from Intel Corp. under its intellectual property
18 * rights. You may have additional license terms from the party that provided
19 * you this software, covering your right to use that party's intellectual
22 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
23 * copy of the source code appearing in this file ("Covered Code") an
24 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
25 * base code distributed originally by Intel ("Original Intel Code") to copy,
26 * make derivatives, distribute, use and display any portion of the Covered
27 * Code in any form, with the right to sublicense such rights; and
29 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
30 * license (with the right to sublicense), under only those claims of Intel
31 * patents that are infringed by the Original Intel Code, to make, use, sell,
32 * offer to sell, and import the Covered Code and derivative works thereof
33 * solely to the minimum extent necessary to exercise the above copyright
34 * license, and in no event shall the patent license extend to any additions
35 * to or modifications of the Original Intel Code. No other license or right
36 * is granted directly or by implication, estoppel or otherwise;
38 * The above copyright and patent license is granted only if the following
43 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
44 * Redistribution of source code of any substantial portion of the Covered
45 * Code or modification with rights to further distribute source must include
46 * the above Copyright Notice, the above License, this list of Conditions,
47 * and the following Disclaimer and Export Compliance provision. In addition,
48 * Licensee must cause all Covered Code to which Licensee contributes to
49 * contain a file documenting the changes Licensee made to create that Covered
50 * Code and the date of any change. Licensee must include in that file the
51 * documentation of any changes made by any predecessor Licensee. Licensee
52 * must include a prominent statement that the modification is derived,
53 * directly or indirectly, from Original Intel Code.
55 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
56 * Redistribution of source code of any substantial portion of the Covered
57 * Code or modification without rights to further distribute source must
58 * include the following Disclaimer and Export Compliance provision in the
59 * documentation and/or other materials provided with distribution. In
60 * addition, Licensee may not authorize further sublicense of source of any
61 * portion of the Covered Code, and must include terms to the effect that the
62 * license from Licensee to its licensee is limited to the intellectual
63 * property embodied in the software Licensee provides to its licensee, and
64 * not to intellectual property embodied in modifications its licensee may
67 * 3.3. Redistribution of Executable. Redistribution in executable form of any
68 * substantial portion of the Covered Code or modification must reproduce the
69 * above Copyright Notice, and the following Disclaimer and Export Compliance
70 * provision in the documentation and/or other materials provided with the
73 * 3.4. Intel retains all right, title, and interest in and to the Original
76 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
77 * Intel shall be used in advertising or otherwise to promote the sale, use or
78 * other dealings in products derived from or relating to the Covered Code
79 * without prior written authorization from Intel.
81 * 4. Disclaimer and Export Compliance
83 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
84 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
85 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
86 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
87 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
88 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
91 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
92 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
93 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
94 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
95 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
96 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
97 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
100 * 4.3. Licensee shall not export, either directly or indirectly, any of this
101 * software or system incorporating such software without first obtaining any
102 * required license or other approval from the U. S. Department of Commerce or
103 * any other agency or department of the United States Government. In the
104 * event Licensee exports any such software from the United States or
105 * re-exports any such software from a foreign destination, Licensee shall
106 * ensure that the distribution and export/re-export of the software is in
107 * compliance with all laws, regulations, orders, or other restrictions of the
108 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
109 * any of its subsidiaries will export/re-export any technical data, process,
110 * software, or service, directly or indirectly, to any country for which the
111 * United States government or any agency thereof requires an export license,
112 * other governmental approval, or letter of assurance, without first obtaining
113 * such license, approval or letter.
115 *****************************************************************************/
117 #define __NSPARSE_C__
119 #include <contrib/dev/acpica/acpi.h>
120 #include <contrib/dev/acpica/acnamesp.h>
121 #include <contrib/dev/acpica/acparser.h>
122 #include <contrib/dev/acpica/acdispat.h>
123 #include <contrib/dev/acpica/actables.h>
126 #define _COMPONENT ACPI_NAMESPACE
127 ACPI_MODULE_NAME ("nsparse")
130 /*******************************************************************************
132 * FUNCTION: NsOneCompleteParse
134 * PARAMETERS: PassNumber - 1 or 2
135 * TableDesc - The table to be parsed.
139 * DESCRIPTION: Perform one complete parse of an ACPI/AML table.
141 ******************************************************************************/
144 AcpiNsOneCompleteParse (
145 ACPI_NATIVE_UINT PassNumber,
146 ACPI_NATIVE_UINT TableIndex)
148 ACPI_PARSE_OBJECT *ParseRoot;
150 ACPI_NATIVE_UINT AmlLength;
152 ACPI_WALK_STATE *WalkState;
153 ACPI_TABLE_HEADER *Table;
154 ACPI_OWNER_ID OwnerId;
157 ACPI_FUNCTION_TRACE (NsOneCompleteParse);
160 Status = AcpiTbGetOwnerId (TableIndex, &OwnerId);
161 if (ACPI_FAILURE (Status))
163 return_ACPI_STATUS (Status);
166 /* Create and init a Root Node */
168 ParseRoot = AcpiPsCreateScopeOp ();
171 return_ACPI_STATUS (AE_NO_MEMORY);
174 /* Create and initialize a new walk state */
176 WalkState = AcpiDsCreateWalkState (OwnerId, NULL, NULL, NULL);
179 AcpiPsFreeOp (ParseRoot);
180 return_ACPI_STATUS (AE_NO_MEMORY);
183 Status = AcpiGetTableByIndex (TableIndex, &Table);
184 if (ACPI_FAILURE (Status))
186 AcpiDsDeleteWalkState (WalkState);
187 AcpiPsFreeOp (ParseRoot);
188 return_ACPI_STATUS (Status);
191 /* Table must consist of at least a complete header */
193 if (Table->Length < sizeof (ACPI_TABLE_HEADER))
195 Status = AE_BAD_HEADER;
199 AmlStart = (UINT8 *) Table + sizeof (ACPI_TABLE_HEADER);
200 AmlLength = Table->Length - sizeof (ACPI_TABLE_HEADER);
201 Status = AcpiDsInitAmlWalk (WalkState, ParseRoot, NULL,
202 AmlStart, AmlLength, NULL, (UINT8) PassNumber);
205 if (ACPI_FAILURE (Status))
207 AcpiDsDeleteWalkState (WalkState);
208 AcpiPsDeleteParseTree (ParseRoot);
209 return_ACPI_STATUS (Status);
214 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "*PARSE* pass %lu parse\n",
215 (unsigned long) PassNumber));
216 Status = AcpiPsParseAml (WalkState);
218 AcpiPsDeleteParseTree (ParseRoot);
219 return_ACPI_STATUS (Status);
223 /*******************************************************************************
225 * FUNCTION: AcpiNsParseTable
227 * PARAMETERS: TableDesc - An ACPI table descriptor for table to parse
228 * StartNode - Where to enter the table into the namespace
232 * DESCRIPTION: Parse AML within an ACPI table and return a tree of ops
234 ******************************************************************************/
238 ACPI_NATIVE_UINT TableIndex,
239 ACPI_NAMESPACE_NODE *StartNode)
244 ACPI_FUNCTION_TRACE (NsParseTable);
250 * In this pass, we load most of the namespace. Control methods
251 * are not parsed until later. A parse tree is not created. Instead,
252 * each Parser Op subtree is deleted when it is finished. This saves
253 * a great deal of memory, and allows a small cache of parse objects
254 * to service the entire parse. The second pass of the parse then
255 * performs another complete parse of the AML.
257 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "**** Start pass 1\n"));
258 Status = AcpiNsOneCompleteParse (ACPI_IMODE_LOAD_PASS1, TableIndex);
259 if (ACPI_FAILURE (Status))
261 return_ACPI_STATUS (Status);
267 * In this pass, we resolve forward references and other things
268 * that could not be completed during the first pass.
269 * Another complete parse of the AML is performed, but the
270 * overhead of this is compensated for by the fact that the
271 * parse objects are all cached.
273 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "**** Start pass 2\n"));
274 Status = AcpiNsOneCompleteParse (ACPI_IMODE_LOAD_PASS2, TableIndex);
275 if (ACPI_FAILURE (Status))
277 return_ACPI_STATUS (Status);
280 return_ACPI_STATUS (Status);