xref: /titanic_52/usr/src/uts/intel/io/acpica/namespace/nsparse.c (revision d2ec54f7875f7e05edd56195adbeb593c947763f)
1 /******************************************************************************
2  *
3  * Module Name: nsparse - namespace interface to AML parser
4  *              $Revision: 1.12 $
5  *
6  *****************************************************************************/
7 
8 /******************************************************************************
9  *
10  * 1. Copyright Notice
11  *
12  * Some or all of this work - Copyright (c) 1999 - 2006, Intel Corp.
13  * All rights reserved.
14  *
15  * 2. License
16  *
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
20  * property rights.
21  *
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
28  *
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;
37  *
38  * The above copyright and patent license is granted only if the following
39  * conditions are met:
40  *
41  * 3. Conditions
42  *
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.
54  *
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
65  * make.
66  *
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
71  * distribution.
72  *
73  * 3.4. Intel retains all right, title, and interest in and to the Original
74  * Intel Code.
75  *
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.
80  *
81  * 4. Disclaimer and Export Compliance
82  *
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
89  * PARTICULAR PURPOSE.
90  *
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
98  * LIMITED REMEDY.
99  *
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.
114  *
115  *****************************************************************************/
116 
117 #define __NSPARSE_C__
118 
119 #include "acpi.h"
120 #include "acnamesp.h"
121 #include "acparser.h"
122 #include "acdispat.h"
123 
124 
125 #define _COMPONENT          ACPI_NAMESPACE
126         ACPI_MODULE_NAME    ("nsparse")
127 
128 
129 /*******************************************************************************
130  *
131  * FUNCTION:    NsOneCompleteParse
132  *
133  * PARAMETERS:  PassNumber              - 1 or 2
134  *              TableDesc               - The table to be parsed.
135  *
136  * RETURN:      Status
137  *
138  * DESCRIPTION: Perform one complete parse of an ACPI/AML table.
139  *
140  ******************************************************************************/
141 
142 ACPI_STATUS
143 AcpiNsOneCompleteParse (
144     UINT8                   PassNumber,
145     ACPI_TABLE_DESC         *TableDesc)
146 {
147     ACPI_PARSE_OBJECT       *ParseRoot;
148     ACPI_STATUS             Status;
149     ACPI_WALK_STATE         *WalkState;
150 
151 
152     ACPI_FUNCTION_TRACE (NsOneCompleteParse);
153 
154 
155     /* Create and init a Root Node */
156 
157     ParseRoot = AcpiPsCreateScopeOp ();
158     if (!ParseRoot)
159     {
160         return_ACPI_STATUS (AE_NO_MEMORY);
161     }
162 
163     /* Create and initialize a new walk state */
164 
165     WalkState = AcpiDsCreateWalkState (TableDesc->OwnerId,
166                                     NULL, NULL, NULL);
167     if (!WalkState)
168     {
169         AcpiPsFreeOp (ParseRoot);
170         return_ACPI_STATUS (AE_NO_MEMORY);
171     }
172 
173     Status = AcpiDsInitAmlWalk (WalkState, ParseRoot, NULL,
174                     TableDesc->AmlStart, TableDesc->AmlLength,
175                     NULL, PassNumber);
176     if (ACPI_FAILURE (Status))
177     {
178         AcpiDsDeleteWalkState (WalkState);
179         return_ACPI_STATUS (Status);
180     }
181 
182     /* Parse the AML */
183 
184     ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "*PARSE* pass %d parse\n", PassNumber));
185     Status = AcpiPsParseAml (WalkState);
186 
187     AcpiPsDeleteParseTree (ParseRoot);
188     return_ACPI_STATUS (Status);
189 }
190 
191 
192 /*******************************************************************************
193  *
194  * FUNCTION:    AcpiNsParseTable
195  *
196  * PARAMETERS:  TableDesc       - An ACPI table descriptor for table to parse
197  *              StartNode       - Where to enter the table into the namespace
198  *
199  * RETURN:      Status
200  *
201  * DESCRIPTION: Parse AML within an ACPI table and return a tree of ops
202  *
203  ******************************************************************************/
204 
205 ACPI_STATUS
206 AcpiNsParseTable (
207     ACPI_TABLE_DESC         *TableDesc,
208     ACPI_NAMESPACE_NODE     *StartNode)
209 {
210     ACPI_STATUS             Status;
211 
212 
213     ACPI_FUNCTION_TRACE (NsParseTable);
214 
215 
216     /*
217      * AML Parse, pass 1
218      *
219      * In this pass, we load most of the namespace.  Control methods
220      * are not parsed until later.  A parse tree is not created.  Instead,
221      * each Parser Op subtree is deleted when it is finished.  This saves
222      * a great deal of memory, and allows a small cache of parse objects
223      * to service the entire parse.  The second pass of the parse then
224      * performs another complete parse of the AML..
225      */
226     ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "**** Start pass 1\n"));
227     Status = AcpiNsOneCompleteParse (1, TableDesc);
228     if (ACPI_FAILURE (Status))
229     {
230         return_ACPI_STATUS (Status);
231     }
232 
233     /*
234      * AML Parse, pass 2
235      *
236      * In this pass, we resolve forward references and other things
237      * that could not be completed during the first pass.
238      * Another complete parse of the AML is performed, but the
239      * overhead of this is compensated for by the fact that the
240      * parse objects are all cached.
241      */
242     ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "**** Start pass 2\n"));
243     Status = AcpiNsOneCompleteParse (2, TableDesc);
244     if (ACPI_FAILURE (Status))
245     {
246         return_ACPI_STATUS (Status);
247     }
248 
249     return_ACPI_STATUS (Status);
250 }
251 
252 
253