1 /******************************************************************************
2 *
3 * Module Name: dswload - Dispatcher first pass namespace load callbacks
4 *
5 *****************************************************************************/
6
7 /*
8 * Copyright (C) 2000 - 2011, Intel Corp.
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions, and the following disclaimer,
16 * without modification.
17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
18 * substantially similar to the "NO WARRANTY" disclaimer below
19 * ("Disclaimer") and any redistribution must be conditioned upon
20 * including a substantially similar Disclaimer requirement for further
21 * binary redistribution.
22 * 3. Neither the names of the above-listed copyright holders nor the names
23 * of any contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * Alternatively, this software may be distributed under the terms of the
27 * GNU General Public License ("GPL") version 2 as published by the Free
28 * Software Foundation.
64 * FUNCTION: AcpiDsInitCallbacks
65 *
66 * PARAMETERS: WalkState - Current state of the parse tree walk
67 * PassNumber - 1, 2, or 3
68 *
69 * RETURN: Status
70 *
71 * DESCRIPTION: Init walk state callbacks
72 *
73 ******************************************************************************/
74
75 ACPI_STATUS
76 AcpiDsInitCallbacks (
77 ACPI_WALK_STATE *WalkState,
78 UINT32 PassNumber)
79 {
80
81 switch (PassNumber)
82 {
83 case 1:
84 WalkState->ParseFlags = ACPI_PARSE_LOAD_PASS1 |
85 ACPI_PARSE_DELETE_TREE;
86 WalkState->DescendingCallback = AcpiDsLoad1BeginOp;
87 WalkState->AscendingCallback = AcpiDsLoad1EndOp;
88 break;
89
90 case 2:
91 WalkState->ParseFlags = ACPI_PARSE_LOAD_PASS1 |
92 ACPI_PARSE_DELETE_TREE;
93 WalkState->DescendingCallback = AcpiDsLoad2BeginOp;
94 WalkState->AscendingCallback = AcpiDsLoad2EndOp;
95 break;
96
97 case 3:
98 #ifndef ACPI_NO_METHOD_EXECUTION
99 WalkState->ParseFlags |= ACPI_PARSE_EXECUTE |
100 ACPI_PARSE_DELETE_TREE;
101 WalkState->DescendingCallback = AcpiDsExecBeginOp;
102 WalkState->AscendingCallback = AcpiDsExecEndOp;
103 #endif
104 break;
105
106 default:
107 return (AE_BAD_PARAMETER);
108 }
109
110 return (AE_OK);
111 }
112
113
114 /*******************************************************************************
115 *
116 * FUNCTION: AcpiDsLoad1BeginOp
117 *
118 * PARAMETERS: WalkState - Current state of the parse tree walk
119 * OutOp - Where to return op if a new one is created
120 *
121 * RETURN: Status
122 *
123 * DESCRIPTION: Descending callback used during the loading of ACPI tables.
124 *
125 ******************************************************************************/
126
157
158 if (Op->Common.Node)
159 {
160 *OutOp = Op;
161 return_ACPI_STATUS (AE_OK);
162 }
163 }
164
165 Path = AcpiPsGetNextNamestring (&WalkState->ParserState);
166
167 /* Map the raw opcode into an internal object type */
168
169 ObjectType = WalkState->OpInfo->ObjectType;
170
171 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
172 "State=%p Op=%p [%s]\n", WalkState, Op, AcpiUtGetTypeName (ObjectType)));
173
174 switch (WalkState->Opcode)
175 {
176 case AML_SCOPE_OP:
177
178 /*
179 * The target name of the Scope() operator must exist at this point so
180 * that we can actually open the scope to enter new names underneath it.
181 * Allow search-to-root for single namesegs.
182 */
183 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType,
184 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, WalkState, &(Node));
185 #ifdef ACPI_ASL_COMPILER
186 if (Status == AE_NOT_FOUND)
187 {
188 /*
189 * Table disassembly:
190 * Target of Scope() not found. Generate an External for it, and
191 * insert the name into the namespace.
192 */
193 AcpiDmAddToExternalList (Op, Path, ACPI_TYPE_DEVICE, 0);
194 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType,
195 ACPI_IMODE_LOAD_PASS1, ACPI_NS_SEARCH_PARENT,
196 WalkState, &Node);
197 }
198 #endif
199 if (ACPI_FAILURE (Status))
200 {
201 ACPI_ERROR_NAMESPACE (Path, Status);
202 return_ACPI_STATUS (Status);
203 }
204
205 /*
206 * Check to make sure that the target is
207 * one of the opcodes that actually opens a scope
208 */
209 switch (Node->Type)
210 {
211 case ACPI_TYPE_ANY:
212 case ACPI_TYPE_LOCAL_SCOPE: /* Scope */
213 case ACPI_TYPE_DEVICE:
214 case ACPI_TYPE_POWER:
215 case ACPI_TYPE_PROCESSOR:
216 case ACPI_TYPE_THERMAL:
217
218 /* These are acceptable types */
219 break;
220
221 case ACPI_TYPE_INTEGER:
222 case ACPI_TYPE_STRING:
223 case ACPI_TYPE_BUFFER:
224
225 /*
226 * These types we will allow, but we will change the type.
227 * This enables some existing code of the form:
228 *
229 * Name (DEB, 0)
230 * Scope (DEB) { ... }
231 *
232 * Note: silently change the type here. On the second pass,
233 * we will report a warning
234 */
235 ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
236 "Type override - [%4.4s] had invalid type (%s) "
237 "for Scope operator, changed to type ANY\n",
238 AcpiUtGetNodeName (Node), AcpiUtGetTypeName (Node->Type)));
239
240 Node->Type = ACPI_TYPE_ANY;
241 WalkState->ScopeInfo->Common.Value = ACPI_TYPE_ANY;
242 break;
243
244 default:
245
246 /* All other types are an error */
247
248 ACPI_ERROR ((AE_INFO,
249 "Invalid type (%s) for target of "
250 "Scope operator [%4.4s] (Cannot override)",
251 AcpiUtGetTypeName (Node->Type), AcpiUtGetNodeName (Node)));
252
253 return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
254 }
255 break;
256
257
258 default:
259 /*
260 * For all other named opcodes, we will enter the name into
261 * the namespace.
262 *
263 * Setup the search flags.
264 * Since we are entering a name into the namespace, we do not want to
265 * enable the search-to-root upsearch.
266 *
267 * There are only two conditions where it is acceptable that the name
268 * already exists:
269 * 1) the Scope() operator can reopen a scoping object that was
270 * previously defined (Scope, Method, Device, etc.)
271 * 2) Whenever we are parsing a deferred opcode (OpRegion, Buffer,
272 * BufferField, or Package), the name of the object is already
273 * in the namespace.
274 */
275 if (WalkState->DeferredNode)
276 {
277 /* This name is already in the namespace, get the node */
|
1 /******************************************************************************
2 *
3 * Module Name: dswload - Dispatcher first pass namespace load callbacks
4 *
5 *****************************************************************************/
6
7 /*
8 * Copyright (C) 2000 - 2013, Intel Corp.
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions, and the following disclaimer,
16 * without modification.
17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
18 * substantially similar to the "NO WARRANTY" disclaimer below
19 * ("Disclaimer") and any redistribution must be conditioned upon
20 * including a substantially similar Disclaimer requirement for further
21 * binary redistribution.
22 * 3. Neither the names of the above-listed copyright holders nor the names
23 * of any contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * Alternatively, this software may be distributed under the terms of the
27 * GNU General Public License ("GPL") version 2 as published by the Free
28 * Software Foundation.
64 * FUNCTION: AcpiDsInitCallbacks
65 *
66 * PARAMETERS: WalkState - Current state of the parse tree walk
67 * PassNumber - 1, 2, or 3
68 *
69 * RETURN: Status
70 *
71 * DESCRIPTION: Init walk state callbacks
72 *
73 ******************************************************************************/
74
75 ACPI_STATUS
76 AcpiDsInitCallbacks (
77 ACPI_WALK_STATE *WalkState,
78 UINT32 PassNumber)
79 {
80
81 switch (PassNumber)
82 {
83 case 1:
84
85 WalkState->ParseFlags = ACPI_PARSE_LOAD_PASS1 |
86 ACPI_PARSE_DELETE_TREE;
87 WalkState->DescendingCallback = AcpiDsLoad1BeginOp;
88 WalkState->AscendingCallback = AcpiDsLoad1EndOp;
89 break;
90
91 case 2:
92
93 WalkState->ParseFlags = ACPI_PARSE_LOAD_PASS1 |
94 ACPI_PARSE_DELETE_TREE;
95 WalkState->DescendingCallback = AcpiDsLoad2BeginOp;
96 WalkState->AscendingCallback = AcpiDsLoad2EndOp;
97 break;
98
99 case 3:
100
101 #ifndef ACPI_NO_METHOD_EXECUTION
102 WalkState->ParseFlags |= ACPI_PARSE_EXECUTE |
103 ACPI_PARSE_DELETE_TREE;
104 WalkState->DescendingCallback = AcpiDsExecBeginOp;
105 WalkState->AscendingCallback = AcpiDsExecEndOp;
106 #endif
107 break;
108
109 default:
110
111 return (AE_BAD_PARAMETER);
112 }
113
114 return (AE_OK);
115 }
116
117
118 /*******************************************************************************
119 *
120 * FUNCTION: AcpiDsLoad1BeginOp
121 *
122 * PARAMETERS: WalkState - Current state of the parse tree walk
123 * OutOp - Where to return op if a new one is created
124 *
125 * RETURN: Status
126 *
127 * DESCRIPTION: Descending callback used during the loading of ACPI tables.
128 *
129 ******************************************************************************/
130
161
162 if (Op->Common.Node)
163 {
164 *OutOp = Op;
165 return_ACPI_STATUS (AE_OK);
166 }
167 }
168
169 Path = AcpiPsGetNextNamestring (&WalkState->ParserState);
170
171 /* Map the raw opcode into an internal object type */
172
173 ObjectType = WalkState->OpInfo->ObjectType;
174
175 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
176 "State=%p Op=%p [%s]\n", WalkState, Op, AcpiUtGetTypeName (ObjectType)));
177
178 switch (WalkState->Opcode)
179 {
180 case AML_SCOPE_OP:
181 /*
182 * The target name of the Scope() operator must exist at this point so
183 * that we can actually open the scope to enter new names underneath it.
184 * Allow search-to-root for single namesegs.
185 */
186 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType,
187 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, WalkState, &(Node));
188 #ifdef ACPI_ASL_COMPILER
189 if (Status == AE_NOT_FOUND)
190 {
191 /*
192 * Table disassembly:
193 * Target of Scope() not found. Generate an External for it, and
194 * insert the name into the namespace.
195 */
196 AcpiDmAddOpToExternalList (Op, Path, ACPI_TYPE_DEVICE, 0, 0);
197 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType,
198 ACPI_IMODE_LOAD_PASS1, ACPI_NS_SEARCH_PARENT,
199 WalkState, &Node);
200 }
201 #endif
202 if (ACPI_FAILURE (Status))
203 {
204 ACPI_ERROR_NAMESPACE (Path, Status);
205 return_ACPI_STATUS (Status);
206 }
207
208 /*
209 * Check to make sure that the target is
210 * one of the opcodes that actually opens a scope
211 */
212 switch (Node->Type)
213 {
214 case ACPI_TYPE_ANY:
215 case ACPI_TYPE_LOCAL_SCOPE: /* Scope */
216 case ACPI_TYPE_DEVICE:
217 case ACPI_TYPE_POWER:
218 case ACPI_TYPE_PROCESSOR:
219 case ACPI_TYPE_THERMAL:
220
221 /* These are acceptable types */
222 break;
223
224 case ACPI_TYPE_INTEGER:
225 case ACPI_TYPE_STRING:
226 case ACPI_TYPE_BUFFER:
227 /*
228 * These types we will allow, but we will change the type.
229 * This enables some existing code of the form:
230 *
231 * Name (DEB, 0)
232 * Scope (DEB) { ... }
233 *
234 * Note: silently change the type here. On the second pass,
235 * we will report a warning
236 */
237 ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
238 "Type override - [%4.4s] had invalid type (%s) "
239 "for Scope operator, changed to type ANY\n",
240 AcpiUtGetNodeName (Node), AcpiUtGetTypeName (Node->Type)));
241
242 Node->Type = ACPI_TYPE_ANY;
243 WalkState->ScopeInfo->Common.Value = ACPI_TYPE_ANY;
244 break;
245
246 case ACPI_TYPE_METHOD:
247 /*
248 * Allow scope change to root during execution of module-level
249 * code. Root is typed METHOD during this time.
250 */
251 if ((Node == AcpiGbl_RootNode) &&
252 (WalkState->ParseFlags & ACPI_PARSE_MODULE_LEVEL))
253 {
254 break;
255 }
256
257 /*lint -fallthrough */
258
259 default:
260
261 /* All other types are an error */
262
263 ACPI_ERROR ((AE_INFO,
264 "Invalid type (%s) for target of "
265 "Scope operator [%4.4s] (Cannot override)",
266 AcpiUtGetTypeName (Node->Type), AcpiUtGetNodeName (Node)));
267
268 return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
269 }
270 break;
271
272 default:
273 /*
274 * For all other named opcodes, we will enter the name into
275 * the namespace.
276 *
277 * Setup the search flags.
278 * Since we are entering a name into the namespace, we do not want to
279 * enable the search-to-root upsearch.
280 *
281 * There are only two conditions where it is acceptable that the name
282 * already exists:
283 * 1) the Scope() operator can reopen a scoping object that was
284 * previously defined (Scope, Method, Device, etc.)
285 * 2) Whenever we are parsing a deferred opcode (OpRegion, Buffer,
286 * BufferField, or Package), the name of the object is already
287 * in the namespace.
288 */
289 if (WalkState->DeferredNode)
290 {
291 /* This name is already in the namespace, get the node */
|