1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
|
//**********************************************************************
//**********************************************************************
//** **
//** (C)Copyright 1985-2011, American Megatrends, Inc. **
//** **
//** All Rights Reserved. **
//** **
//** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 **
//** **
//** Phone: (770)-246-8600 **
//** **
//**********************************************************************
//**********************************************************************
//**********************************************************************
// $Header: /Alaska/BIN/Modules/ACPI/Template/Core/AmlChild.c 2 5/14/11 2:10p Yakovlevs $
//
// $Revision: 2 $
//
// $Date: 5/14/11 2:10p $
//**********************************************************************
// Revision History
// ----------------
// $Log: /Alaska/BIN/Modules/ACPI/Template/Core/AmlChild.c $
//
// 2 5/14/11 2:10p Yakovlevs
// [TAG] EIP 56526
// [Category] New Feature
// [Description] ACPI Manipulation Protocol. PI 1.2 Spec Vol 5 Section
// 9. Initial checkin.
// [Files] AcpiCore.c; AcpiCore.h; AcpiSdtPrivate.h; Aml.c; AmlChild.c;
// AmlNamespace.c; AmlOption.c; AmlString.c AcpiSdt.c;
// Protocol\AcpiSdt.h.
//
//**********************************************************************
//**********************************************************************
//<AMI_FHDR_START>
//
// Name: AmlChild.c
//
// Description:
// ACPI AML Name space parsing/manipulation functions for ACPI SDT.
//
//<AMI_FHDR_END>
//**********************************************************************
#include "AcpiCore.h"
/**
Return the child objects buffer from AML Handle's buffer.
@param[in] AmlParentHandle Parent handle.
@param[in] CurrentBuffer The current child buffer.
@param[out] Buffer On return, points to the next returned child buffer or NULL if there are no
child buffer.
@retval EFI_SUCCESS Success
@retval EFI_INVALID_PARAMETER AmlParentHandle does not refer to a valid ACPI object.
**/
EFI_STATUS
AmlGetChildFromObjectBuffer (
IN EFI_AML_HANDLE *AmlParentHandle,
IN UINT8 *CurrentBuffer,
OUT VOID **Buffer
)
{
AML_BYTE_ENCODING *AmlByteEncoding;
UINTN DataSize;
//
// Root is considered as SCOPE, which has TermList.
// We need return only Object in TermList.
//
while ((UINTN)CurrentBuffer < (UINTN)(AmlParentHandle->Buffer + AmlParentHandle->Size)) {
AmlByteEncoding = AmlSearchByOpByte (CurrentBuffer);
if (AmlByteEncoding == NULL) {
return EFI_INVALID_PARAMETER;
}
//
// NOTE: We need return everything, because user might need parse the returned object.
//
if ((AmlByteEncoding->Attribute & AML_IS_NAME_CHAR) == 0) {
*Buffer = CurrentBuffer;
return EFI_SUCCESS;
}
DataSize = AmlGetObjectSize (
AmlByteEncoding,
CurrentBuffer,
(UINTN)AmlParentHandle->Buffer + AmlParentHandle->Size - (UINTN)CurrentBuffer
);
if (DataSize == 0) {
return EFI_INVALID_PARAMETER;
}
CurrentBuffer += DataSize;
}
//
// No more
//
*Buffer = NULL;
return EFI_SUCCESS;
}
/**
Return the child ACPI objects from Root Handle.
@param[in] AmlParentHandle Parent handle. It is Root Handle.
@param[in] AmlHandle The previously returned handle or NULL to start with the first handle.
@param[out] Buffer On return, points to the next returned ACPI handle or NULL if there are no
child objects.
@retval EFI_SUCCESS Success
@retval EFI_INVALID_PARAMETER ParentHandle is NULL or does not refer to a valid ACPI object.
**/
EFI_STATUS
AmlGetChildFromRoot (
IN EFI_AML_HANDLE *AmlParentHandle,
IN EFI_AML_HANDLE *AmlHandle,
OUT VOID **Buffer
)
{
UINT8 *CurrentBuffer;
if (AmlHandle == NULL) {
//
// First One
//
CurrentBuffer = (VOID *)AmlParentHandle->Buffer;
} else {
CurrentBuffer = (VOID *)(AmlHandle->Buffer + AmlHandle->Size);
}
return AmlGetChildFromObjectBuffer (AmlParentHandle, CurrentBuffer, Buffer);
}
/**
Return the child objects buffer from AML Handle's option list.
@param[in] AmlParentHandle Parent handle.
@param[in] AmlHandle The current child handle.
@param[out] Buffer On return, points to the next returned child buffer or NULL if there are no
child buffer.
@retval EFI_SUCCESS Success
@retval EFI_INVALID_PARAMETER AmlParentHandle does not refer to a valid ACPI object.
**/
EFI_STATUS
AmlGetChildFromOptionList (
IN EFI_AML_HANDLE *AmlParentHandle,
IN EFI_AML_HANDLE *AmlHandle,
OUT VOID **Buffer
)
{
EFI_ACPI_DATA_TYPE DataType;
VOID *Data;
UINTN DataSize;
AML_OP_PARSE_INDEX Index;
EFI_STATUS Status;
AML_OP_PARSE_INDEX MaxTerm;
Index = AML_OP_PARSE_INDEX_GET_TERM1;
MaxTerm = AmlParentHandle->AmlByteEncoding->MaxIndex;
while (Index <= MaxTerm) {
Status = AmlParseOptionHandleCommon (
AmlParentHandle,
(AML_OP_PARSE_INDEX)Index,
&DataType,
(VOID **)&Data,
&DataSize
);
if (EFI_ERROR (Status)) {
return EFI_INVALID_PARAMETER;
}
if (DataType == EFI_ACPI_DATA_TYPE_NONE) {
//
// Not found
//
break;
}
//
// Find it, and Check Data
//
if ((DataType == EFI_ACPI_DATA_TYPE_CHILD) &&
((UINTN)AmlHandle->Buffer < (UINTN)Data)) {
//
// Buffer < Data means current node is next one
//
*Buffer = Data;
return EFI_SUCCESS;
}
//
// Not Child
//
Index ++;
}
*Buffer = NULL;
return EFI_SUCCESS;
}
/**
Return the child objects buffer from AML Handle's object child list.
@param[in] AmlParentHandle Parent handle.
@param[in] AmlHandle The current child handle.
@param[out] Buffer On return, points to the next returned child buffer or NULL if there are no
child buffer.
@retval EFI_SUCCESS Success
@retval EFI_INVALID_PARAMETER AmlParentHandle does not refer to a valid ACPI object.
**/
EFI_STATUS
AmlGetChildFromObjectChildList (
IN EFI_AML_HANDLE *AmlParentHandle,
IN EFI_AML_HANDLE *AmlHandle,
OUT VOID **Buffer
)
{
EFI_STATUS Status;
UINT8 *CurrentBuffer;
if ((AmlParentHandle->AmlByteEncoding->Attribute & AML_HAS_CHILD_OBJ) == 0) {
//
// No ObjectList
//
*Buffer = NULL;
return EFI_SUCCESS;
}
//
// Do we need add node within METHOD?
// Yes, just add Object is OK. But we need filter NameString for METHOD invoke.
//
//
// Now, we get the last node.
//
Status = AmlGetOffsetAfterLastOption (AmlParentHandle, &CurrentBuffer);
if (EFI_ERROR (Status)) {
return EFI_INVALID_PARAMETER;
}
//
// Go through all the reset buffer.
//
if ((UINTN)AmlHandle->Buffer < (UINTN)CurrentBuffer) {
//
// Buffer < Data means next node is first object
//
} else if ((UINTN)AmlHandle->Buffer + AmlHandle->Size < (UINTN)AmlParentHandle->Buffer + AmlParentHandle->Size) {
//
// There is still more node
//
CurrentBuffer = AmlHandle->Buffer + AmlHandle->Size;
} else {
//
// No more data
//
*Buffer = NULL;
return EFI_SUCCESS;
}
return AmlGetChildFromObjectBuffer (AmlParentHandle, CurrentBuffer, Buffer);
}
/**
Return the child ACPI objects from Non-Root Handle.
@param[in] AmlParentHandle Parent handle. It is Non-Root Handle.
@param[in] AmlHandle The previously returned handle or NULL to start with the first handle.
@param[out] Buffer On return, points to the next returned ACPI handle or NULL if there are no
child objects.
@retval EFI_SUCCESS Success
@retval EFI_INVALID_PARAMETER ParentHandle is NULL or does not refer to a valid ACPI object.
**/
EFI_STATUS
AmlGetChildFromNonRoot (
IN EFI_AML_HANDLE *AmlParentHandle,
IN EFI_AML_HANDLE *AmlHandle,
OUT VOID **Buffer
)
{
EFI_STATUS Status;
if (AmlHandle == NULL) {
//
// NULL means first one
//
AmlHandle = AmlParentHandle;
}
//
// 1. Get Option
//
Status = AmlGetChildFromOptionList (AmlParentHandle, AmlHandle, Buffer);
if (EFI_ERROR (Status)) {
return EFI_INVALID_PARAMETER;
}
if (*Buffer != NULL) {
return EFI_SUCCESS;
}
//
// 2. search ObjectList
//
return AmlGetChildFromObjectChildList (AmlParentHandle, AmlHandle, Buffer);
}
//**********************************************************************
//**********************************************************************
//** **
//** (C)Copyright 1985-2011, American Megatrends, Inc. **
//** **
//** All Rights Reserved. **
//** **
//** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 **
//** **
//** Phone: (770)-246-8600 **
//** **
//**********************************************************************
//**********************************************************************
|
