1bc36eafdSMike Gerdts /******************************************************************************
2bc36eafdSMike Gerdts *
3bc36eafdSMike Gerdts * Module Name: dswstate - Dispatcher parse tree walk management routines
4bc36eafdSMike Gerdts *
5bc36eafdSMike Gerdts *****************************************************************************/
6bc36eafdSMike Gerdts
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.
12bc36eafdSMike Gerdts * All rights reserved.
13bc36eafdSMike Gerdts *
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 *
119bc36eafdSMike Gerdts * Redistribution and use in source and binary forms, with or without
120bc36eafdSMike Gerdts * modification, are permitted provided that the following conditions
121bc36eafdSMike Gerdts * are met:
122bc36eafdSMike Gerdts * 1. Redistributions of source code must retain the above copyright
123bc36eafdSMike Gerdts * notice, this list of conditions, and the following disclaimer,
124bc36eafdSMike Gerdts * without modification.
125bc36eafdSMike Gerdts * 2. Redistributions in binary form must reproduce at minimum a disclaimer
126bc36eafdSMike Gerdts * substantially similar to the "NO WARRANTY" disclaimer below
127bc36eafdSMike Gerdts * ("Disclaimer") and any redistribution must be conditioned upon
128bc36eafdSMike Gerdts * including a substantially similar Disclaimer requirement for further
129bc36eafdSMike Gerdts * binary redistribution.
130bc36eafdSMike Gerdts * 3. Neither the names of the above-listed copyright holders nor the names
131bc36eafdSMike Gerdts * of any contributors may be used to endorse or promote products derived
132bc36eafdSMike Gerdts * from this software without specific prior written permission.
133bc36eafdSMike Gerdts *
134*35786f68SRobert Mustacchi * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
135*35786f68SRobert Mustacchi * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
136*35786f68SRobert Mustacchi * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
137*35786f68SRobert Mustacchi * 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
147bc36eafdSMike Gerdts * GNU General Public License ("GPL") version 2 as published by the Free
148bc36eafdSMike Gerdts * Software Foundation.
149bc36eafdSMike Gerdts *
150*35786f68SRobert Mustacchi *****************************************************************************/
151bc36eafdSMike Gerdts
152bc36eafdSMike Gerdts #include "acpi.h"
153bc36eafdSMike Gerdts #include "accommon.h"
154bc36eafdSMike Gerdts #include "acparser.h"
155bc36eafdSMike Gerdts #include "acdispat.h"
156bc36eafdSMike Gerdts #include "acnamesp.h"
157bc36eafdSMike Gerdts
158bc36eafdSMike Gerdts #define _COMPONENT ACPI_DISPATCHER
159bc36eafdSMike Gerdts ACPI_MODULE_NAME ("dswstate")
160bc36eafdSMike Gerdts
161bc36eafdSMike Gerdts /* Local prototypes */
162bc36eafdSMike Gerdts
163bc36eafdSMike Gerdts static ACPI_STATUS
164bc36eafdSMike Gerdts AcpiDsResultStackPush (
165bc36eafdSMike Gerdts ACPI_WALK_STATE *WalkState);
166bc36eafdSMike Gerdts
167bc36eafdSMike Gerdts static ACPI_STATUS
168bc36eafdSMike Gerdts AcpiDsResultStackPop (
169bc36eafdSMike Gerdts ACPI_WALK_STATE *WalkState);
170bc36eafdSMike Gerdts
171bc36eafdSMike Gerdts
172bc36eafdSMike Gerdts /*******************************************************************************
173bc36eafdSMike Gerdts *
174bc36eafdSMike Gerdts * FUNCTION: AcpiDsResultPop
175bc36eafdSMike Gerdts *
176bc36eafdSMike Gerdts * PARAMETERS: Object - Where to return the popped object
177bc36eafdSMike Gerdts * WalkState - Current Walk state
178bc36eafdSMike Gerdts *
179bc36eafdSMike Gerdts * RETURN: Status
180bc36eafdSMike Gerdts *
181bc36eafdSMike Gerdts * DESCRIPTION: Pop an object off the top of this walk's result stack
182bc36eafdSMike Gerdts *
183bc36eafdSMike Gerdts ******************************************************************************/
184bc36eafdSMike Gerdts
185bc36eafdSMike Gerdts ACPI_STATUS
AcpiDsResultPop(ACPI_OPERAND_OBJECT ** Object,ACPI_WALK_STATE * WalkState)186bc36eafdSMike Gerdts AcpiDsResultPop (
187bc36eafdSMike Gerdts ACPI_OPERAND_OBJECT **Object,
188bc36eafdSMike Gerdts ACPI_WALK_STATE *WalkState)
189bc36eafdSMike Gerdts {
190bc36eafdSMike Gerdts UINT32 Index;
191bc36eafdSMike Gerdts ACPI_GENERIC_STATE *State;
192bc36eafdSMike Gerdts ACPI_STATUS Status;
193bc36eafdSMike Gerdts
194bc36eafdSMike Gerdts
195bc36eafdSMike Gerdts ACPI_FUNCTION_NAME (DsResultPop);
196bc36eafdSMike Gerdts
197bc36eafdSMike Gerdts
198bc36eafdSMike Gerdts State = WalkState->Results;
199bc36eafdSMike Gerdts
200bc36eafdSMike Gerdts /* Incorrect state of result stack */
201bc36eafdSMike Gerdts
202bc36eafdSMike Gerdts if (State && !WalkState->ResultCount)
203bc36eafdSMike Gerdts {
204bc36eafdSMike Gerdts ACPI_ERROR ((AE_INFO, "No results on result stack"));
205bc36eafdSMike Gerdts return (AE_AML_INTERNAL);
206bc36eafdSMike Gerdts }
207bc36eafdSMike Gerdts
208bc36eafdSMike Gerdts if (!State && WalkState->ResultCount)
209bc36eafdSMike Gerdts {
210bc36eafdSMike Gerdts ACPI_ERROR ((AE_INFO, "No result state for result stack"));
211bc36eafdSMike Gerdts return (AE_AML_INTERNAL);
212bc36eafdSMike Gerdts }
213bc36eafdSMike Gerdts
214bc36eafdSMike Gerdts /* Empty result stack */
215bc36eafdSMike Gerdts
216bc36eafdSMike Gerdts if (!State)
217bc36eafdSMike Gerdts {
218bc36eafdSMike Gerdts ACPI_ERROR ((AE_INFO, "Result stack is empty! State=%p", WalkState));
219bc36eafdSMike Gerdts return (AE_AML_NO_RETURN_VALUE);
220bc36eafdSMike Gerdts }
221bc36eafdSMike Gerdts
222bc36eafdSMike Gerdts /* Return object of the top element and clean that top element result stack */
223bc36eafdSMike Gerdts
224bc36eafdSMike Gerdts WalkState->ResultCount--;
225bc36eafdSMike Gerdts Index = (UINT32) WalkState->ResultCount % ACPI_RESULTS_FRAME_OBJ_NUM;
226bc36eafdSMike Gerdts
227bc36eafdSMike Gerdts *Object = State->Results.ObjDesc [Index];
228bc36eafdSMike Gerdts if (!*Object)
229bc36eafdSMike Gerdts {
230bc36eafdSMike Gerdts ACPI_ERROR ((AE_INFO, "No result objects on result stack, State=%p",
231bc36eafdSMike Gerdts WalkState));
232bc36eafdSMike Gerdts return (AE_AML_NO_RETURN_VALUE);
233bc36eafdSMike Gerdts }
234bc36eafdSMike Gerdts
235bc36eafdSMike Gerdts State->Results.ObjDesc [Index] = NULL;
236bc36eafdSMike Gerdts if (Index == 0)
237bc36eafdSMike Gerdts {
238bc36eafdSMike Gerdts Status = AcpiDsResultStackPop (WalkState);
239bc36eafdSMike Gerdts if (ACPI_FAILURE (Status))
240bc36eafdSMike Gerdts {
241bc36eafdSMike Gerdts return (Status);
242bc36eafdSMike Gerdts }
243bc36eafdSMike Gerdts }
244bc36eafdSMike Gerdts
245bc36eafdSMike Gerdts ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
246bc36eafdSMike Gerdts "Obj=%p [%s] Index=%X State=%p Num=%X\n", *Object,
247bc36eafdSMike Gerdts AcpiUtGetObjectTypeName (*Object),
248bc36eafdSMike Gerdts Index, WalkState, WalkState->ResultCount));
249bc36eafdSMike Gerdts
250bc36eafdSMike Gerdts return (AE_OK);
251bc36eafdSMike Gerdts }
252bc36eafdSMike Gerdts
253bc36eafdSMike Gerdts
254bc36eafdSMike Gerdts /*******************************************************************************
255bc36eafdSMike Gerdts *
256bc36eafdSMike Gerdts * FUNCTION: AcpiDsResultPush
257bc36eafdSMike Gerdts *
258bc36eafdSMike Gerdts * PARAMETERS: Object - Where to return the popped object
259bc36eafdSMike Gerdts * WalkState - Current Walk state
260bc36eafdSMike Gerdts *
261bc36eafdSMike Gerdts * RETURN: Status
262bc36eafdSMike Gerdts *
263bc36eafdSMike Gerdts * DESCRIPTION: Push an object onto the current result stack
264bc36eafdSMike Gerdts *
265bc36eafdSMike Gerdts ******************************************************************************/
266bc36eafdSMike Gerdts
267bc36eafdSMike Gerdts ACPI_STATUS
AcpiDsResultPush(ACPI_OPERAND_OBJECT * Object,ACPI_WALK_STATE * WalkState)268bc36eafdSMike Gerdts AcpiDsResultPush (
269bc36eafdSMike Gerdts ACPI_OPERAND_OBJECT *Object,
270bc36eafdSMike Gerdts ACPI_WALK_STATE *WalkState)
271bc36eafdSMike Gerdts {
272bc36eafdSMike Gerdts ACPI_GENERIC_STATE *State;
273bc36eafdSMike Gerdts ACPI_STATUS Status;
274bc36eafdSMike Gerdts UINT32 Index;
275bc36eafdSMike Gerdts
276bc36eafdSMike Gerdts
277bc36eafdSMike Gerdts ACPI_FUNCTION_NAME (DsResultPush);
278bc36eafdSMike Gerdts
279bc36eafdSMike Gerdts
280bc36eafdSMike Gerdts if (WalkState->ResultCount > WalkState->ResultSize)
281bc36eafdSMike Gerdts {
282bc36eafdSMike Gerdts ACPI_ERROR ((AE_INFO, "Result stack is full"));
283bc36eafdSMike Gerdts return (AE_AML_INTERNAL);
284bc36eafdSMike Gerdts }
285bc36eafdSMike Gerdts else if (WalkState->ResultCount == WalkState->ResultSize)
286bc36eafdSMike Gerdts {
287bc36eafdSMike Gerdts /* Extend the result stack */
288bc36eafdSMike Gerdts
289bc36eafdSMike Gerdts Status = AcpiDsResultStackPush (WalkState);
290bc36eafdSMike Gerdts if (ACPI_FAILURE (Status))
291bc36eafdSMike Gerdts {
292bc36eafdSMike Gerdts ACPI_ERROR ((AE_INFO, "Failed to extend the result stack"));
293bc36eafdSMike Gerdts return (Status);
294bc36eafdSMike Gerdts }
295bc36eafdSMike Gerdts }
296bc36eafdSMike Gerdts
297bc36eafdSMike Gerdts if (!(WalkState->ResultCount < WalkState->ResultSize))
298bc36eafdSMike Gerdts {
299bc36eafdSMike Gerdts ACPI_ERROR ((AE_INFO, "No free elements in result stack"));
300bc36eafdSMike Gerdts return (AE_AML_INTERNAL);
301bc36eafdSMike Gerdts }
302bc36eafdSMike Gerdts
303bc36eafdSMike Gerdts State = WalkState->Results;
304bc36eafdSMike Gerdts if (!State)
305bc36eafdSMike Gerdts {
306bc36eafdSMike Gerdts ACPI_ERROR ((AE_INFO, "No result stack frame during push"));
307bc36eafdSMike Gerdts return (AE_AML_INTERNAL);
308bc36eafdSMike Gerdts }
309bc36eafdSMike Gerdts
310bc36eafdSMike Gerdts if (!Object)
311bc36eafdSMike Gerdts {
312bc36eafdSMike Gerdts ACPI_ERROR ((AE_INFO,
313bc36eafdSMike Gerdts "Null Object! Obj=%p State=%p Num=%u",
314bc36eafdSMike Gerdts Object, WalkState, WalkState->ResultCount));
315bc36eafdSMike Gerdts return (AE_BAD_PARAMETER);
316bc36eafdSMike Gerdts }
317bc36eafdSMike Gerdts
318bc36eafdSMike Gerdts /* Assign the address of object to the top free element of result stack */
319bc36eafdSMike Gerdts
320bc36eafdSMike Gerdts Index = (UINT32) WalkState->ResultCount % ACPI_RESULTS_FRAME_OBJ_NUM;
321bc36eafdSMike Gerdts State->Results.ObjDesc [Index] = Object;
322bc36eafdSMike Gerdts WalkState->ResultCount++;
323bc36eafdSMike Gerdts
324bc36eafdSMike Gerdts ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Obj=%p [%s] State=%p Num=%X Cur=%X\n",
325bc36eafdSMike Gerdts Object, AcpiUtGetObjectTypeName ((ACPI_OPERAND_OBJECT *) Object),
326bc36eafdSMike Gerdts WalkState, WalkState->ResultCount, WalkState->CurrentResult));
327bc36eafdSMike Gerdts
328bc36eafdSMike Gerdts return (AE_OK);
329bc36eafdSMike Gerdts }
330bc36eafdSMike Gerdts
331bc36eafdSMike Gerdts
332bc36eafdSMike Gerdts /*******************************************************************************
333bc36eafdSMike Gerdts *
334bc36eafdSMike Gerdts * FUNCTION: AcpiDsResultStackPush
335bc36eafdSMike Gerdts *
336bc36eafdSMike Gerdts * PARAMETERS: WalkState - Current Walk state
337bc36eafdSMike Gerdts *
338bc36eafdSMike Gerdts * RETURN: Status
339bc36eafdSMike Gerdts *
340bc36eafdSMike Gerdts * DESCRIPTION: Push an object onto the WalkState result stack
341bc36eafdSMike Gerdts *
342bc36eafdSMike Gerdts ******************************************************************************/
343bc36eafdSMike Gerdts
344bc36eafdSMike Gerdts static ACPI_STATUS
AcpiDsResultStackPush(ACPI_WALK_STATE * WalkState)345bc36eafdSMike Gerdts AcpiDsResultStackPush (
346bc36eafdSMike Gerdts ACPI_WALK_STATE *WalkState)
347bc36eafdSMike Gerdts {
348bc36eafdSMike Gerdts ACPI_GENERIC_STATE *State;
349bc36eafdSMike Gerdts
350bc36eafdSMike Gerdts
351bc36eafdSMike Gerdts ACPI_FUNCTION_NAME (DsResultStackPush);
352bc36eafdSMike Gerdts
353bc36eafdSMike Gerdts
354bc36eafdSMike Gerdts /* Check for stack overflow */
355bc36eafdSMike Gerdts
356bc36eafdSMike Gerdts if (((UINT32) WalkState->ResultSize + ACPI_RESULTS_FRAME_OBJ_NUM) >
357bc36eafdSMike Gerdts ACPI_RESULTS_OBJ_NUM_MAX)
358bc36eafdSMike Gerdts {
359bc36eafdSMike Gerdts ACPI_ERROR ((AE_INFO, "Result stack overflow: State=%p Num=%u",
360bc36eafdSMike Gerdts WalkState, WalkState->ResultSize));
361bc36eafdSMike Gerdts return (AE_STACK_OVERFLOW);
362bc36eafdSMike Gerdts }
363bc36eafdSMike Gerdts
364bc36eafdSMike Gerdts State = AcpiUtCreateGenericState ();
365bc36eafdSMike Gerdts if (!State)
366bc36eafdSMike Gerdts {
367bc36eafdSMike Gerdts return (AE_NO_MEMORY);
368bc36eafdSMike Gerdts }
369bc36eafdSMike Gerdts
370bc36eafdSMike Gerdts State->Common.DescriptorType = ACPI_DESC_TYPE_STATE_RESULT;
371bc36eafdSMike Gerdts AcpiUtPushGenericState (&WalkState->Results, State);
372bc36eafdSMike Gerdts
373bc36eafdSMike Gerdts /* Increase the length of the result stack by the length of frame */
374bc36eafdSMike Gerdts
375bc36eafdSMike Gerdts WalkState->ResultSize += ACPI_RESULTS_FRAME_OBJ_NUM;
376bc36eafdSMike Gerdts
377bc36eafdSMike Gerdts ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Results=%p State=%p\n",
378bc36eafdSMike Gerdts State, WalkState));
379bc36eafdSMike Gerdts
380bc36eafdSMike Gerdts return (AE_OK);
381bc36eafdSMike Gerdts }
382bc36eafdSMike Gerdts
383bc36eafdSMike Gerdts
384bc36eafdSMike Gerdts /*******************************************************************************
385bc36eafdSMike Gerdts *
386bc36eafdSMike Gerdts * FUNCTION: AcpiDsResultStackPop
387bc36eafdSMike Gerdts *
388bc36eafdSMike Gerdts * PARAMETERS: WalkState - Current Walk state
389bc36eafdSMike Gerdts *
390bc36eafdSMike Gerdts * RETURN: Status
391bc36eafdSMike Gerdts *
392bc36eafdSMike Gerdts * DESCRIPTION: Pop an object off of the WalkState result stack
393bc36eafdSMike Gerdts *
394bc36eafdSMike Gerdts ******************************************************************************/
395bc36eafdSMike Gerdts
396bc36eafdSMike Gerdts static ACPI_STATUS
AcpiDsResultStackPop(ACPI_WALK_STATE * WalkState)397bc36eafdSMike Gerdts AcpiDsResultStackPop (
398bc36eafdSMike Gerdts ACPI_WALK_STATE *WalkState)
399bc36eafdSMike Gerdts {
400bc36eafdSMike Gerdts ACPI_GENERIC_STATE *State;
401bc36eafdSMike Gerdts
402bc36eafdSMike Gerdts
403bc36eafdSMike Gerdts ACPI_FUNCTION_NAME (DsResultStackPop);
404bc36eafdSMike Gerdts
405bc36eafdSMike Gerdts
406bc36eafdSMike Gerdts /* Check for stack underflow */
407bc36eafdSMike Gerdts
408bc36eafdSMike Gerdts if (WalkState->Results == NULL)
409bc36eafdSMike Gerdts {
410bc36eafdSMike Gerdts ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
411bc36eafdSMike Gerdts "Result stack underflow - State=%p\n", WalkState));
412bc36eafdSMike Gerdts return (AE_AML_NO_OPERAND);
413bc36eafdSMike Gerdts }
414bc36eafdSMike Gerdts
415bc36eafdSMike Gerdts if (WalkState->ResultSize < ACPI_RESULTS_FRAME_OBJ_NUM)
416bc36eafdSMike Gerdts {
417bc36eafdSMike Gerdts ACPI_ERROR ((AE_INFO, "Insufficient result stack size"));
418bc36eafdSMike Gerdts return (AE_AML_INTERNAL);
419bc36eafdSMike Gerdts }
420bc36eafdSMike Gerdts
421bc36eafdSMike Gerdts State = AcpiUtPopGenericState (&WalkState->Results);
422bc36eafdSMike Gerdts AcpiUtDeleteGenericState (State);
423bc36eafdSMike Gerdts
424bc36eafdSMike Gerdts /* Decrease the length of result stack by the length of frame */
425bc36eafdSMike Gerdts
426bc36eafdSMike Gerdts WalkState->ResultSize -= ACPI_RESULTS_FRAME_OBJ_NUM;
427bc36eafdSMike Gerdts
428bc36eafdSMike Gerdts ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
429bc36eafdSMike Gerdts "Result=%p RemainingResults=%X State=%p\n",
430bc36eafdSMike Gerdts State, WalkState->ResultCount, WalkState));
431bc36eafdSMike Gerdts
432bc36eafdSMike Gerdts return (AE_OK);
433bc36eafdSMike Gerdts }
434bc36eafdSMike Gerdts
435bc36eafdSMike Gerdts
436bc36eafdSMike Gerdts /*******************************************************************************
437bc36eafdSMike Gerdts *
438bc36eafdSMike Gerdts * FUNCTION: AcpiDsObjStackPush
439bc36eafdSMike Gerdts *
440bc36eafdSMike Gerdts * PARAMETERS: Object - Object to push
441bc36eafdSMike Gerdts * WalkState - Current Walk state
442bc36eafdSMike Gerdts *
443bc36eafdSMike Gerdts * RETURN: Status
444bc36eafdSMike Gerdts *
445bc36eafdSMike Gerdts * DESCRIPTION: Push an object onto this walk's object/operand stack
446bc36eafdSMike Gerdts *
447bc36eafdSMike Gerdts ******************************************************************************/
448bc36eafdSMike Gerdts
449bc36eafdSMike Gerdts ACPI_STATUS
AcpiDsObjStackPush(void * Object,ACPI_WALK_STATE * WalkState)450bc36eafdSMike Gerdts AcpiDsObjStackPush (
451bc36eafdSMike Gerdts void *Object,
452bc36eafdSMike Gerdts ACPI_WALK_STATE *WalkState)
453bc36eafdSMike Gerdts {
454bc36eafdSMike Gerdts ACPI_FUNCTION_NAME (DsObjStackPush);
455bc36eafdSMike Gerdts
456bc36eafdSMike Gerdts
457bc36eafdSMike Gerdts /* Check for stack overflow */
458bc36eafdSMike Gerdts
459bc36eafdSMike Gerdts if (WalkState->NumOperands >= ACPI_OBJ_NUM_OPERANDS)
460bc36eafdSMike Gerdts {
461bc36eafdSMike Gerdts ACPI_ERROR ((AE_INFO,
462bc36eafdSMike Gerdts "Object stack overflow! Obj=%p State=%p #Ops=%u",
463bc36eafdSMike Gerdts Object, WalkState, WalkState->NumOperands));
464bc36eafdSMike Gerdts return (AE_STACK_OVERFLOW);
465bc36eafdSMike Gerdts }
466bc36eafdSMike Gerdts
467bc36eafdSMike Gerdts /* Put the object onto the stack */
468bc36eafdSMike Gerdts
469bc36eafdSMike Gerdts WalkState->Operands [WalkState->OperandIndex] = Object;
470bc36eafdSMike Gerdts WalkState->NumOperands++;
471bc36eafdSMike Gerdts
472bc36eafdSMike Gerdts /* For the usual order of filling the operand stack */
473bc36eafdSMike Gerdts
474bc36eafdSMike Gerdts WalkState->OperandIndex++;
475bc36eafdSMike Gerdts
476bc36eafdSMike Gerdts ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Obj=%p [%s] State=%p #Ops=%X\n",
477bc36eafdSMike Gerdts Object, AcpiUtGetObjectTypeName ((ACPI_OPERAND_OBJECT *) Object),
478bc36eafdSMike Gerdts WalkState, WalkState->NumOperands));
479bc36eafdSMike Gerdts
480bc36eafdSMike Gerdts return (AE_OK);
481bc36eafdSMike Gerdts }
482bc36eafdSMike Gerdts
483bc36eafdSMike Gerdts
484bc36eafdSMike Gerdts /*******************************************************************************
485bc36eafdSMike Gerdts *
486bc36eafdSMike Gerdts * FUNCTION: AcpiDsObjStackPop
487bc36eafdSMike Gerdts *
488bc36eafdSMike Gerdts * PARAMETERS: PopCount - Number of objects/entries to pop
489bc36eafdSMike Gerdts * WalkState - Current Walk state
490bc36eafdSMike Gerdts *
491bc36eafdSMike Gerdts * RETURN: Status
492bc36eafdSMike Gerdts *
493bc36eafdSMike Gerdts * DESCRIPTION: Pop this walk's object stack. Objects on the stack are NOT
494bc36eafdSMike Gerdts * deleted by this routine.
495bc36eafdSMike Gerdts *
496bc36eafdSMike Gerdts ******************************************************************************/
497bc36eafdSMike Gerdts
498bc36eafdSMike Gerdts ACPI_STATUS
AcpiDsObjStackPop(UINT32 PopCount,ACPI_WALK_STATE * WalkState)499bc36eafdSMike Gerdts AcpiDsObjStackPop (
500bc36eafdSMike Gerdts UINT32 PopCount,
501bc36eafdSMike Gerdts ACPI_WALK_STATE *WalkState)
502bc36eafdSMike Gerdts {
503bc36eafdSMike Gerdts UINT32 i;
504bc36eafdSMike Gerdts
505bc36eafdSMike Gerdts
506bc36eafdSMike Gerdts ACPI_FUNCTION_NAME (DsObjStackPop);
507bc36eafdSMike Gerdts
508bc36eafdSMike Gerdts
509bc36eafdSMike Gerdts for (i = 0; i < PopCount; i++)
510bc36eafdSMike Gerdts {
511bc36eafdSMike Gerdts /* Check for stack underflow */
512bc36eafdSMike Gerdts
513bc36eafdSMike Gerdts if (WalkState->NumOperands == 0)
514bc36eafdSMike Gerdts {
515bc36eafdSMike Gerdts ACPI_ERROR ((AE_INFO,
516bc36eafdSMike Gerdts "Object stack underflow! Count=%X State=%p #Ops=%u",
517bc36eafdSMike Gerdts PopCount, WalkState, WalkState->NumOperands));
518bc36eafdSMike Gerdts return (AE_STACK_UNDERFLOW);
519bc36eafdSMike Gerdts }
520bc36eafdSMike Gerdts
521bc36eafdSMike Gerdts /* Just set the stack entry to null */
522bc36eafdSMike Gerdts
523bc36eafdSMike Gerdts WalkState->NumOperands--;
524bc36eafdSMike Gerdts WalkState->Operands [WalkState->NumOperands] = NULL;
525bc36eafdSMike Gerdts }
526bc36eafdSMike Gerdts
527bc36eafdSMike Gerdts ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Count=%X State=%p #Ops=%u\n",
528bc36eafdSMike Gerdts PopCount, WalkState, WalkState->NumOperands));
529bc36eafdSMike Gerdts
530bc36eafdSMike Gerdts return (AE_OK);
531bc36eafdSMike Gerdts }
532bc36eafdSMike Gerdts
533bc36eafdSMike Gerdts
534bc36eafdSMike Gerdts /*******************************************************************************
535bc36eafdSMike Gerdts *
536bc36eafdSMike Gerdts * FUNCTION: AcpiDsObjStackPopAndDelete
537bc36eafdSMike Gerdts *
538bc36eafdSMike Gerdts * PARAMETERS: PopCount - Number of objects/entries to pop
539bc36eafdSMike Gerdts * WalkState - Current Walk state
540bc36eafdSMike Gerdts *
541bc36eafdSMike Gerdts * RETURN: Status
542bc36eafdSMike Gerdts *
543bc36eafdSMike Gerdts * DESCRIPTION: Pop this walk's object stack and delete each object that is
544bc36eafdSMike Gerdts * popped off.
545bc36eafdSMike Gerdts *
546bc36eafdSMike Gerdts ******************************************************************************/
547bc36eafdSMike Gerdts
548bc36eafdSMike Gerdts void
AcpiDsObjStackPopAndDelete(UINT32 PopCount,ACPI_WALK_STATE * WalkState)549bc36eafdSMike Gerdts AcpiDsObjStackPopAndDelete (
550bc36eafdSMike Gerdts UINT32 PopCount,
551bc36eafdSMike Gerdts ACPI_WALK_STATE *WalkState)
552bc36eafdSMike Gerdts {
553bc36eafdSMike Gerdts INT32 i;
554bc36eafdSMike Gerdts ACPI_OPERAND_OBJECT *ObjDesc;
555bc36eafdSMike Gerdts
556bc36eafdSMike Gerdts
557bc36eafdSMike Gerdts ACPI_FUNCTION_NAME (DsObjStackPopAndDelete);
558bc36eafdSMike Gerdts
559bc36eafdSMike Gerdts
560bc36eafdSMike Gerdts if (PopCount == 0)
561bc36eafdSMike Gerdts {
562bc36eafdSMike Gerdts return;
563bc36eafdSMike Gerdts }
564bc36eafdSMike Gerdts
565bc36eafdSMike Gerdts for (i = (INT32) PopCount - 1; i >= 0; i--)
566bc36eafdSMike Gerdts {
567bc36eafdSMike Gerdts if (WalkState->NumOperands == 0)
568bc36eafdSMike Gerdts {
569bc36eafdSMike Gerdts return;
570bc36eafdSMike Gerdts }
571bc36eafdSMike Gerdts
572bc36eafdSMike Gerdts /* Pop the stack and delete an object if present in this stack entry */
573bc36eafdSMike Gerdts
574bc36eafdSMike Gerdts WalkState->NumOperands--;
575bc36eafdSMike Gerdts ObjDesc = WalkState->Operands [i];
576bc36eafdSMike Gerdts if (ObjDesc)
577bc36eafdSMike Gerdts {
578bc36eafdSMike Gerdts AcpiUtRemoveReference (WalkState->Operands [i]);
579bc36eafdSMike Gerdts WalkState->Operands [i] = NULL;
580bc36eafdSMike Gerdts }
581bc36eafdSMike Gerdts }
582bc36eafdSMike Gerdts
583bc36eafdSMike Gerdts ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Count=%X State=%p #Ops=%X\n",
584bc36eafdSMike Gerdts PopCount, WalkState, WalkState->NumOperands));
585bc36eafdSMike Gerdts }
586bc36eafdSMike Gerdts
587bc36eafdSMike Gerdts
588bc36eafdSMike Gerdts /*******************************************************************************
589bc36eafdSMike Gerdts *
590bc36eafdSMike Gerdts * FUNCTION: AcpiDsGetCurrentWalkState
591bc36eafdSMike Gerdts *
592bc36eafdSMike Gerdts * PARAMETERS: Thread - Get current active state for this Thread
593bc36eafdSMike Gerdts *
594bc36eafdSMike Gerdts * RETURN: Pointer to the current walk state
595bc36eafdSMike Gerdts *
596bc36eafdSMike Gerdts * DESCRIPTION: Get the walk state that is at the head of the list (the "current"
597bc36eafdSMike Gerdts * walk state.)
598bc36eafdSMike Gerdts *
599bc36eafdSMike Gerdts ******************************************************************************/
600bc36eafdSMike Gerdts
601bc36eafdSMike Gerdts ACPI_WALK_STATE *
AcpiDsGetCurrentWalkState(ACPI_THREAD_STATE * Thread)602bc36eafdSMike Gerdts AcpiDsGetCurrentWalkState (
603bc36eafdSMike Gerdts ACPI_THREAD_STATE *Thread)
604bc36eafdSMike Gerdts {
605bc36eafdSMike Gerdts ACPI_FUNCTION_NAME (DsGetCurrentWalkState);
606bc36eafdSMike Gerdts
607bc36eafdSMike Gerdts
608bc36eafdSMike Gerdts if (!Thread)
609bc36eafdSMike Gerdts {
610bc36eafdSMike Gerdts return (NULL);
611bc36eafdSMike Gerdts }
612bc36eafdSMike Gerdts
613bc36eafdSMike Gerdts ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "Current WalkState %p\n",
614bc36eafdSMike Gerdts Thread->WalkStateList));
615bc36eafdSMike Gerdts
616bc36eafdSMike Gerdts return (Thread->WalkStateList);
617bc36eafdSMike Gerdts }
618bc36eafdSMike Gerdts
619bc36eafdSMike Gerdts
620bc36eafdSMike Gerdts /*******************************************************************************
621bc36eafdSMike Gerdts *
622bc36eafdSMike Gerdts * FUNCTION: AcpiDsPushWalkState
623bc36eafdSMike Gerdts *
624bc36eafdSMike Gerdts * PARAMETERS: WalkState - State to push
625bc36eafdSMike Gerdts * Thread - Thread state object
626bc36eafdSMike Gerdts *
627bc36eafdSMike Gerdts * RETURN: None
628bc36eafdSMike Gerdts *
629bc36eafdSMike Gerdts * DESCRIPTION: Place the Thread state at the head of the state list
630bc36eafdSMike Gerdts *
631bc36eafdSMike Gerdts ******************************************************************************/
632bc36eafdSMike Gerdts
633bc36eafdSMike Gerdts void
AcpiDsPushWalkState(ACPI_WALK_STATE * WalkState,ACPI_THREAD_STATE * Thread)634bc36eafdSMike Gerdts AcpiDsPushWalkState (
635bc36eafdSMike Gerdts ACPI_WALK_STATE *WalkState,
636bc36eafdSMike Gerdts ACPI_THREAD_STATE *Thread)
637bc36eafdSMike Gerdts {
638bc36eafdSMike Gerdts ACPI_FUNCTION_TRACE (DsPushWalkState);
639bc36eafdSMike Gerdts
640bc36eafdSMike Gerdts
641bc36eafdSMike Gerdts WalkState->Next = Thread->WalkStateList;
642bc36eafdSMike Gerdts Thread->WalkStateList = WalkState;
643bc36eafdSMike Gerdts
644bc36eafdSMike Gerdts return_VOID;
645bc36eafdSMike Gerdts }
646bc36eafdSMike Gerdts
647bc36eafdSMike Gerdts
648bc36eafdSMike Gerdts /*******************************************************************************
649bc36eafdSMike Gerdts *
650bc36eafdSMike Gerdts * FUNCTION: AcpiDsPopWalkState
651bc36eafdSMike Gerdts *
652bc36eafdSMike Gerdts * PARAMETERS: Thread - Current thread state
653bc36eafdSMike Gerdts *
654bc36eafdSMike Gerdts * RETURN: A WalkState object popped from the thread's stack
655bc36eafdSMike Gerdts *
656bc36eafdSMike Gerdts * DESCRIPTION: Remove and return the walkstate object that is at the head of
657bc36eafdSMike Gerdts * the walk stack for the given walk list. NULL indicates that
658bc36eafdSMike Gerdts * the list is empty.
659bc36eafdSMike Gerdts *
660bc36eafdSMike Gerdts ******************************************************************************/
661bc36eafdSMike Gerdts
662bc36eafdSMike Gerdts ACPI_WALK_STATE *
AcpiDsPopWalkState(ACPI_THREAD_STATE * Thread)663bc36eafdSMike Gerdts AcpiDsPopWalkState (
664bc36eafdSMike Gerdts ACPI_THREAD_STATE *Thread)
665bc36eafdSMike Gerdts {
666bc36eafdSMike Gerdts ACPI_WALK_STATE *WalkState;
667bc36eafdSMike Gerdts
668bc36eafdSMike Gerdts
669bc36eafdSMike Gerdts ACPI_FUNCTION_TRACE (DsPopWalkState);
670bc36eafdSMike Gerdts
671bc36eafdSMike Gerdts
672bc36eafdSMike Gerdts WalkState = Thread->WalkStateList;
673bc36eafdSMike Gerdts
674bc36eafdSMike Gerdts if (WalkState)
675bc36eafdSMike Gerdts {
676bc36eafdSMike Gerdts /* Next walk state becomes the current walk state */
677bc36eafdSMike Gerdts
678bc36eafdSMike Gerdts Thread->WalkStateList = WalkState->Next;
679bc36eafdSMike Gerdts
680bc36eafdSMike Gerdts /*
681bc36eafdSMike Gerdts * Don't clear the NEXT field, this serves as an indicator
682bc36eafdSMike Gerdts * that there is a parent WALK STATE
683bc36eafdSMike Gerdts * Do Not: WalkState->Next = NULL;
684bc36eafdSMike Gerdts */
685bc36eafdSMike Gerdts }
686bc36eafdSMike Gerdts
687bc36eafdSMike Gerdts return_PTR (WalkState);
688bc36eafdSMike Gerdts }
689bc36eafdSMike Gerdts
690bc36eafdSMike Gerdts
691bc36eafdSMike Gerdts /*******************************************************************************
692bc36eafdSMike Gerdts *
693bc36eafdSMike Gerdts * FUNCTION: AcpiDsCreateWalkState
694bc36eafdSMike Gerdts *
695bc36eafdSMike Gerdts * PARAMETERS: OwnerId - ID for object creation
696bc36eafdSMike Gerdts * Origin - Starting point for this walk
697bc36eafdSMike Gerdts * MethodDesc - Method object
698bc36eafdSMike Gerdts * Thread - Current thread state
699bc36eafdSMike Gerdts *
700bc36eafdSMike Gerdts * RETURN: Pointer to the new walk state.
701bc36eafdSMike Gerdts *
702bc36eafdSMike Gerdts * DESCRIPTION: Allocate and initialize a new walk state. The current walk
703bc36eafdSMike Gerdts * state is set to this new state.
704bc36eafdSMike Gerdts *
705bc36eafdSMike Gerdts ******************************************************************************/
706bc36eafdSMike Gerdts
707bc36eafdSMike Gerdts ACPI_WALK_STATE *
AcpiDsCreateWalkState(ACPI_OWNER_ID OwnerId,ACPI_PARSE_OBJECT * Origin,ACPI_OPERAND_OBJECT * MethodDesc,ACPI_THREAD_STATE * Thread)708bc36eafdSMike Gerdts AcpiDsCreateWalkState (
709bc36eafdSMike Gerdts ACPI_OWNER_ID OwnerId,
710bc36eafdSMike Gerdts ACPI_PARSE_OBJECT *Origin,
711bc36eafdSMike Gerdts ACPI_OPERAND_OBJECT *MethodDesc,
712bc36eafdSMike Gerdts ACPI_THREAD_STATE *Thread)
713bc36eafdSMike Gerdts {
714bc36eafdSMike Gerdts ACPI_WALK_STATE *WalkState;
715bc36eafdSMike Gerdts
716bc36eafdSMike Gerdts
717bc36eafdSMike Gerdts ACPI_FUNCTION_TRACE (DsCreateWalkState);
718bc36eafdSMike Gerdts
719bc36eafdSMike Gerdts
720bc36eafdSMike Gerdts WalkState = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_WALK_STATE));
721bc36eafdSMike Gerdts if (!WalkState)
722bc36eafdSMike Gerdts {
723bc36eafdSMike Gerdts return_PTR (NULL);
724bc36eafdSMike Gerdts }
725bc36eafdSMike Gerdts
726bc36eafdSMike Gerdts WalkState->DescriptorType = ACPI_DESC_TYPE_WALK;
727bc36eafdSMike Gerdts WalkState->MethodDesc = MethodDesc;
728bc36eafdSMike Gerdts WalkState->OwnerId = OwnerId;
729bc36eafdSMike Gerdts WalkState->Origin = Origin;
730bc36eafdSMike Gerdts WalkState->Thread = Thread;
731bc36eafdSMike Gerdts
732bc36eafdSMike Gerdts WalkState->ParserState.StartOp = Origin;
733bc36eafdSMike Gerdts
734bc36eafdSMike Gerdts /* Init the method args/local */
735bc36eafdSMike Gerdts
736bc36eafdSMike Gerdts #if (!defined (ACPI_NO_METHOD_EXECUTION) && !defined (ACPI_CONSTANT_EVAL_ONLY))
737bc36eafdSMike Gerdts AcpiDsMethodDataInit (WalkState);
738bc36eafdSMike Gerdts #endif
739bc36eafdSMike Gerdts
740bc36eafdSMike Gerdts /* Put the new state at the head of the walk list */
741bc36eafdSMike Gerdts
742bc36eafdSMike Gerdts if (Thread)
743bc36eafdSMike Gerdts {
744bc36eafdSMike Gerdts AcpiDsPushWalkState (WalkState, Thread);
745bc36eafdSMike Gerdts }
746bc36eafdSMike Gerdts
747bc36eafdSMike Gerdts return_PTR (WalkState);
748bc36eafdSMike Gerdts }
749bc36eafdSMike Gerdts
750bc36eafdSMike Gerdts
751bc36eafdSMike Gerdts /*******************************************************************************
752bc36eafdSMike Gerdts *
753bc36eafdSMike Gerdts * FUNCTION: AcpiDsInitAmlWalk
754bc36eafdSMike Gerdts *
755bc36eafdSMike Gerdts * PARAMETERS: WalkState - New state to be initialized
756bc36eafdSMike Gerdts * Op - Current parse op
757bc36eafdSMike Gerdts * MethodNode - Control method NS node, if any
758bc36eafdSMike Gerdts * AmlStart - Start of AML
759bc36eafdSMike Gerdts * AmlLength - Length of AML
760bc36eafdSMike Gerdts * Info - Method info block (params, etc.)
761bc36eafdSMike Gerdts * PassNumber - 1, 2, or 3
762bc36eafdSMike Gerdts *
763bc36eafdSMike Gerdts * RETURN: Status
764bc36eafdSMike Gerdts *
765bc36eafdSMike Gerdts * DESCRIPTION: Initialize a walk state for a pass 1 or 2 parse tree walk
766bc36eafdSMike Gerdts *
767bc36eafdSMike Gerdts ******************************************************************************/
768bc36eafdSMike Gerdts
769bc36eafdSMike Gerdts ACPI_STATUS
AcpiDsInitAmlWalk(ACPI_WALK_STATE * WalkState,ACPI_PARSE_OBJECT * Op,ACPI_NAMESPACE_NODE * MethodNode,UINT8 * AmlStart,UINT32 AmlLength,ACPI_EVALUATE_INFO * Info,UINT8 PassNumber)770bc36eafdSMike Gerdts AcpiDsInitAmlWalk (
771bc36eafdSMike Gerdts ACPI_WALK_STATE *WalkState,
772bc36eafdSMike Gerdts ACPI_PARSE_OBJECT *Op,
773bc36eafdSMike Gerdts ACPI_NAMESPACE_NODE *MethodNode,
774bc36eafdSMike Gerdts UINT8 *AmlStart,
775bc36eafdSMike Gerdts UINT32 AmlLength,
776bc36eafdSMike Gerdts ACPI_EVALUATE_INFO *Info,
777bc36eafdSMike Gerdts UINT8 PassNumber)
778bc36eafdSMike Gerdts {
779bc36eafdSMike Gerdts ACPI_STATUS Status;
780bc36eafdSMike Gerdts ACPI_PARSE_STATE *ParserState = &WalkState->ParserState;
781bc36eafdSMike Gerdts ACPI_PARSE_OBJECT *ExtraOp;
782bc36eafdSMike Gerdts
783bc36eafdSMike Gerdts
784bc36eafdSMike Gerdts ACPI_FUNCTION_TRACE (DsInitAmlWalk);
785bc36eafdSMike Gerdts
786bc36eafdSMike Gerdts
787bc36eafdSMike Gerdts WalkState->ParserState.Aml =
788bc36eafdSMike Gerdts WalkState->ParserState.AmlStart = AmlStart;
789bc36eafdSMike Gerdts WalkState->ParserState.AmlEnd =
790bc36eafdSMike Gerdts WalkState->ParserState.PkgEnd = AmlStart + AmlLength;
791bc36eafdSMike Gerdts
792bc36eafdSMike Gerdts /* The NextOp of the NextWalk will be the beginning of the method */
793bc36eafdSMike Gerdts
794bc36eafdSMike Gerdts WalkState->NextOp = NULL;
795bc36eafdSMike Gerdts WalkState->PassNumber = PassNumber;
796bc36eafdSMike Gerdts
797bc36eafdSMike Gerdts if (Info)
798bc36eafdSMike Gerdts {
799bc36eafdSMike Gerdts WalkState->Params = Info->Parameters;
800bc36eafdSMike Gerdts WalkState->CallerReturnDesc = &Info->ReturnObject;
801bc36eafdSMike Gerdts }
802bc36eafdSMike Gerdts
803bc36eafdSMike Gerdts Status = AcpiPsInitScope (&WalkState->ParserState, Op);
804bc36eafdSMike Gerdts if (ACPI_FAILURE (Status))
805bc36eafdSMike Gerdts {
806bc36eafdSMike Gerdts return_ACPI_STATUS (Status);
807bc36eafdSMike Gerdts }
808bc36eafdSMike Gerdts
809bc36eafdSMike Gerdts if (MethodNode)
810bc36eafdSMike Gerdts {
811bc36eafdSMike Gerdts WalkState->ParserState.StartNode = MethodNode;
812bc36eafdSMike Gerdts WalkState->WalkType = ACPI_WALK_METHOD;
813bc36eafdSMike Gerdts WalkState->MethodNode = MethodNode;
814bc36eafdSMike Gerdts WalkState->MethodDesc = AcpiNsGetAttachedObject (MethodNode);
815bc36eafdSMike Gerdts
816bc36eafdSMike Gerdts /* Push start scope on scope stack and make it current */
817bc36eafdSMike Gerdts
818bc36eafdSMike Gerdts Status = AcpiDsScopeStackPush (
819bc36eafdSMike Gerdts MethodNode, ACPI_TYPE_METHOD, WalkState);
820bc36eafdSMike Gerdts if (ACPI_FAILURE (Status))
821bc36eafdSMike Gerdts {
822bc36eafdSMike Gerdts return_ACPI_STATUS (Status);
823bc36eafdSMike Gerdts }
824bc36eafdSMike Gerdts
825bc36eafdSMike Gerdts /* Init the method arguments */
826bc36eafdSMike Gerdts
827bc36eafdSMike Gerdts Status = AcpiDsMethodDataInitArgs (WalkState->Params,
828bc36eafdSMike Gerdts ACPI_METHOD_NUM_ARGS, WalkState);
829bc36eafdSMike Gerdts if (ACPI_FAILURE (Status))
830bc36eafdSMike Gerdts {
831bc36eafdSMike Gerdts return_ACPI_STATUS (Status);
832bc36eafdSMike Gerdts }
833bc36eafdSMike Gerdts }
834bc36eafdSMike Gerdts else
835bc36eafdSMike Gerdts {
836bc36eafdSMike Gerdts /*
837bc36eafdSMike Gerdts * Setup the current scope.
838bc36eafdSMike Gerdts * Find a Named Op that has a namespace node associated with it.
839bc36eafdSMike Gerdts * search upwards from this Op. Current scope is the first
840bc36eafdSMike Gerdts * Op with a namespace node.
841bc36eafdSMike Gerdts */
842bc36eafdSMike Gerdts ExtraOp = ParserState->StartOp;
843bc36eafdSMike Gerdts while (ExtraOp && !ExtraOp->Common.Node)
844bc36eafdSMike Gerdts {
845bc36eafdSMike Gerdts ExtraOp = ExtraOp->Common.Parent;
846bc36eafdSMike Gerdts }
847bc36eafdSMike Gerdts
848bc36eafdSMike Gerdts if (!ExtraOp)
849bc36eafdSMike Gerdts {
850bc36eafdSMike Gerdts ParserState->StartNode = NULL;
851bc36eafdSMike Gerdts }
852bc36eafdSMike Gerdts else
853bc36eafdSMike Gerdts {
854bc36eafdSMike Gerdts ParserState->StartNode = ExtraOp->Common.Node;
855bc36eafdSMike Gerdts }
856bc36eafdSMike Gerdts
857bc36eafdSMike Gerdts if (ParserState->StartNode)
858bc36eafdSMike Gerdts {
859bc36eafdSMike Gerdts /* Push start scope on scope stack and make it current */
860bc36eafdSMike Gerdts
861bc36eafdSMike Gerdts Status = AcpiDsScopeStackPush (ParserState->StartNode,
862bc36eafdSMike Gerdts ParserState->StartNode->Type, WalkState);
863bc36eafdSMike Gerdts if (ACPI_FAILURE (Status))
864bc36eafdSMike Gerdts {
865bc36eafdSMike Gerdts return_ACPI_STATUS (Status);
866bc36eafdSMike Gerdts }
867bc36eafdSMike Gerdts }
868bc36eafdSMike Gerdts }
869bc36eafdSMike Gerdts
870bc36eafdSMike Gerdts Status = AcpiDsInitCallbacks (WalkState, PassNumber);
871bc36eafdSMike Gerdts return_ACPI_STATUS (Status);
872bc36eafdSMike Gerdts }
873bc36eafdSMike Gerdts
874bc36eafdSMike Gerdts
875bc36eafdSMike Gerdts /*******************************************************************************
876bc36eafdSMike Gerdts *
877bc36eafdSMike Gerdts * FUNCTION: AcpiDsDeleteWalkState
878bc36eafdSMike Gerdts *
879bc36eafdSMike Gerdts * PARAMETERS: WalkState - State to delete
880bc36eafdSMike Gerdts *
881bc36eafdSMike Gerdts * RETURN: Status
882bc36eafdSMike Gerdts *
883bc36eafdSMike Gerdts * DESCRIPTION: Delete a walk state including all internal data structures
884bc36eafdSMike Gerdts *
885bc36eafdSMike Gerdts ******************************************************************************/
886bc36eafdSMike Gerdts
887bc36eafdSMike Gerdts void
AcpiDsDeleteWalkState(ACPI_WALK_STATE * WalkState)888bc36eafdSMike Gerdts AcpiDsDeleteWalkState (
889bc36eafdSMike Gerdts ACPI_WALK_STATE *WalkState)
890bc36eafdSMike Gerdts {
891bc36eafdSMike Gerdts ACPI_GENERIC_STATE *State;
892bc36eafdSMike Gerdts
893bc36eafdSMike Gerdts
894bc36eafdSMike Gerdts ACPI_FUNCTION_TRACE_PTR (DsDeleteWalkState, WalkState);
895bc36eafdSMike Gerdts
896bc36eafdSMike Gerdts
897bc36eafdSMike Gerdts if (!WalkState)
898bc36eafdSMike Gerdts {
899bc36eafdSMike Gerdts return_VOID;
900bc36eafdSMike Gerdts }
901bc36eafdSMike Gerdts
902bc36eafdSMike Gerdts if (WalkState->DescriptorType != ACPI_DESC_TYPE_WALK)
903bc36eafdSMike Gerdts {
904bc36eafdSMike Gerdts ACPI_ERROR ((AE_INFO, "%p is not a valid walk state",
905bc36eafdSMike Gerdts WalkState));
906bc36eafdSMike Gerdts return_VOID;
907bc36eafdSMike Gerdts }
908bc36eafdSMike Gerdts
909bc36eafdSMike Gerdts /* There should not be any open scopes */
910bc36eafdSMike Gerdts
911bc36eafdSMike Gerdts if (WalkState->ParserState.Scope)
912bc36eafdSMike Gerdts {
913bc36eafdSMike Gerdts ACPI_ERROR ((AE_INFO, "%p walk still has a scope list",
914bc36eafdSMike Gerdts WalkState));
915bc36eafdSMike Gerdts AcpiPsCleanupScope (&WalkState->ParserState);
916bc36eafdSMike Gerdts }
917bc36eafdSMike Gerdts
918bc36eafdSMike Gerdts /* Always must free any linked control states */
919bc36eafdSMike Gerdts
920bc36eafdSMike Gerdts while (WalkState->ControlState)
921bc36eafdSMike Gerdts {
922bc36eafdSMike Gerdts State = WalkState->ControlState;
923bc36eafdSMike Gerdts WalkState->ControlState = State->Common.Next;
924bc36eafdSMike Gerdts
925bc36eafdSMike Gerdts AcpiUtDeleteGenericState (State);
926bc36eafdSMike Gerdts }
927bc36eafdSMike Gerdts
928bc36eafdSMike Gerdts /* Always must free any linked parse states */
929bc36eafdSMike Gerdts
930bc36eafdSMike Gerdts while (WalkState->ScopeInfo)
931bc36eafdSMike Gerdts {
932bc36eafdSMike Gerdts State = WalkState->ScopeInfo;
933bc36eafdSMike Gerdts WalkState->ScopeInfo = State->Common.Next;
934bc36eafdSMike Gerdts
935bc36eafdSMike Gerdts AcpiUtDeleteGenericState (State);
936bc36eafdSMike Gerdts }
937bc36eafdSMike Gerdts
938bc36eafdSMike Gerdts /* Always must free any stacked result states */
939bc36eafdSMike Gerdts
940bc36eafdSMike Gerdts while (WalkState->Results)
941bc36eafdSMike Gerdts {
942bc36eafdSMike Gerdts State = WalkState->Results;
943bc36eafdSMike Gerdts WalkState->Results = State->Common.Next;
944bc36eafdSMike Gerdts
945bc36eafdSMike Gerdts AcpiUtDeleteGenericState (State);
946bc36eafdSMike Gerdts }
947bc36eafdSMike Gerdts
948bc36eafdSMike Gerdts ACPI_FREE (WalkState);
949bc36eafdSMike Gerdts return_VOID;
950bc36eafdSMike Gerdts }
951