summaryrefslogtreecommitdiffstats
path: root/drivers/acpi/acpica/dsargs.c
blob: 3e6989738e85f8d24577fd01b2ca084c7184b3ed (plain)
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
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
/******************************************************************************
 *
 * Module Name: dsargs - Support for execution of dynamic arguments for static
 *                       objects (regions, fields, buffer fields, etc.)
 *
 *****************************************************************************/

/*
 * Copyright (C) 2000 - 2015, Intel Corp.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions, and the following disclaimer,
 *    without modification.
 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
 *    substantially similar to the "NO WARRANTY" disclaimer below
 *    ("Disclaimer") and any redistribution must be conditioned upon
 *    including a substantially similar Disclaimer requirement for further
 *    binary redistribution.
 * 3. Neither the names of the above-listed copyright holders nor the names
 *    of any contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 * NO WARRANTY
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGES.
 */

#include <acpi/acpi.h>
#include "accommon.h"
#include "acparser.h"
#include "amlcode.h"
#include "acdispat.h"
#include "acnamesp.h"

#define _COMPONENT          ACPI_DISPATCHER
ACPI_MODULE_NAME("dsargs")

/* Local prototypes */
static acpi_status
acpi_ds_execute_arguments(struct acpi_namespace_node *node,
			  struct acpi_namespace_node *scope_node,
			  u32 aml_length, u8 *aml_start);

/*******************************************************************************
 *
 * FUNCTION:    acpi_ds_execute_arguments
 *
 * PARAMETERS:  node                - Object NS node
 *              scope_node          - Parent NS node
 *              aml_length          - Length of executable AML
 *              aml_start           - Pointer to the AML
 *
 * RETURN:      Status.
 *
 * DESCRIPTION: Late (deferred) execution of region or field arguments
 *
 ******************************************************************************/

static acpi_status
acpi_ds_execute_arguments(struct acpi_namespace_node *node,
			  struct acpi_namespace_node *scope_node,
			  u32 aml_length, u8 *aml_start)
{
	acpi_status status;
	union acpi_parse_object *op;
	struct acpi_walk_state *walk_state;

	ACPI_FUNCTION_TRACE(ds_execute_arguments);

	/* Allocate a new parser op to be the root of the parsed tree */

	op = acpi_ps_alloc_op(AML_INT_EVAL_SUBTREE_OP);
	if (!op) {
		return_ACPI_STATUS(AE_NO_MEMORY);
	}

	/* Save the Node for use in acpi_ps_parse_aml */

	op->common.node = scope_node;

	/* Create and initialize a new parser state */

	walk_state = acpi_ds_create_walk_state(0, NULL, NULL, NULL);
	if (!walk_state) {
		status = AE_NO_MEMORY;
		goto cleanup;
	}

	status = acpi_ds_init_aml_walk(walk_state, op, NULL, aml_start,
				       aml_length, NULL, ACPI_IMODE_LOAD_PASS1);
	if (ACPI_FAILURE(status)) {
		acpi_ds_delete_walk_state(walk_state);
		goto cleanup;
	}

	/* Mark this parse as a deferred opcode */

	walk_state->parse_flags = ACPI_PARSE_DEFERRED_OP;
	walk_state->deferred_node = node;

	/* Pass1: Parse the entire declaration */

	status = acpi_ps_parse_aml(walk_state);
	if (ACPI_FAILURE(status)) {
		goto cleanup;
	}

	/* Get and init the Op created above */

	op->common.node = node;
	acpi_ps_delete_parse_tree(op);

	/* Evaluate the deferred arguments */

	op = acpi_ps_alloc_op(AML_INT_EVAL_SUBTREE_OP);
	if (!op) {
		return_ACPI_STATUS(AE_NO_MEMORY);
	}

	op->common.node = scope_node;

	/* Create and initialize a new parser state */

	walk_state = acpi_ds_create_walk_state(0, NULL, NULL, NULL);
	if (!walk_state) {
		status = AE_NO_MEMORY;
		goto cleanup;
	}

	/* Execute the opcode and arguments */

	status = acpi_ds_init_aml_walk(walk_state, op, NULL, aml_start,
				       aml_length, NULL, ACPI_IMODE_EXECUTE);
	if (ACPI_FAILURE(status)) {
		acpi_ds_delete_walk_state(walk_state);
		goto cleanup;
	}

	/* Mark this execution as a deferred opcode */

	walk_state->deferred_node = node;
	status = acpi_ps_parse_aml(walk_state);

cleanup:
	acpi_ps_delete_parse_tree(op);
	return_ACPI_STATUS(status);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ds_get_buffer_field_arguments
 *
 * PARAMETERS:  obj_desc        - A valid buffer_field object
 *
 * RETURN:      Status.
 *
 * DESCRIPTION: Get buffer_field Buffer and Index. This implements the late
 *              evaluation of these field attributes.
 *
 ******************************************************************************/

acpi_status
acpi_ds_get_buffer_field_arguments(union acpi_operand_object *obj_desc)
{
	union acpi_operand_object *extra_desc;
	struct acpi_namespace_node *node;
	acpi_status status;

	ACPI_FUNCTION_TRACE_PTR(ds_get_buffer_field_arguments, obj_desc);

	if (obj_desc->common.flags & AOPOBJ_DATA_VALID) {
		return_ACPI_STATUS(AE_OK);
	}

	/* Get the AML pointer (method object) and buffer_field node */

	extra_desc = acpi_ns_get_secondary_object(obj_desc);
	node = obj_desc->buffer_field.node;

	ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname(ACPI_TYPE_BUFFER_FIELD,
						      node, NULL));

	ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "[%4.4s] BufferField Arg Init\n",
			  acpi_ut_get_node_name(node)));

	/* Execute the AML code for the term_arg arguments */

	status = acpi_ds_execute_arguments(node, node->parent,
					   extra_desc->extra.aml_length,
					   extra_desc->extra.aml_start);
	return_ACPI_STATUS(status);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ds_get_bank_field_arguments
 *
 * PARAMETERS:  obj_desc        - A valid bank_field object
 *
 * RETURN:      Status.
 *
 * DESCRIPTION: Get bank_field bank_value. This implements the late
 *              evaluation of these field attributes.
 *
 ******************************************************************************/

acpi_status
acpi_ds_get_bank_field_arguments(union acpi_operand_object *obj_desc)
{
	union acpi_operand_object *extra_desc;
	struct acpi_namespace_node *node;
	acpi_status status;

	ACPI_FUNCTION_TRACE_PTR(ds_get_bank_field_arguments, obj_desc);

	if (obj_desc->common.flags & AOPOBJ_DATA_VALID) {
		return_ACPI_STATUS(AE_OK);
	}

	/* Get the AML pointer (method object) and bank_field node */

	extra_desc = acpi_ns_get_secondary_object(obj_desc);
	node = obj_desc->bank_field.node;

	ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname
			(ACPI_TYPE_LOCAL_BANK_FIELD, node, NULL));

	ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "[%4.4s] BankField Arg Init\n",
			  acpi_ut_get_node_name(node)));

	/* Execute the AML code for the term_arg arguments */

	status = acpi_ds_execute_arguments(node, node->parent,
					   extra_desc->extra.aml_length,
					   extra_desc->extra.aml_start);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	status = acpi_ut_add_address_range(obj_desc->region.space_id,
					   obj_desc->region.address,
					   obj_desc->region.length, node);
	return_ACPI_STATUS(status);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ds_get_buffer_arguments
 *
 * PARAMETERS:  obj_desc        - A valid Buffer object
 *
 * RETURN:      Status.
 *
 * DESCRIPTION: Get Buffer length and initializer byte list. This implements
 *              the late evaluation of these attributes.
 *
 ******************************************************************************/

acpi_status acpi_ds_get_buffer_arguments(union acpi_operand_object *obj_desc)
{
	struct acpi_namespace_node *node;
	acpi_status status;

	ACPI_FUNCTION_TRACE_PTR(ds_get_buffer_arguments, obj_desc);

	if (obj_desc->common.flags & AOPOBJ_DATA_VALID) {
		return_ACPI_STATUS(AE_OK);
	}

	/* Get the Buffer node */

	node = obj_desc->buffer.node;
	if (!node) {
		ACPI_ERROR((AE_INFO,
			    "No pointer back to namespace node in buffer object %p",
			    obj_desc));
		return_ACPI_STATUS(AE_AML_INTERNAL);
	}

	ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Buffer Arg Init\n"));

	/* Execute the AML code for the term_arg arguments */

	status = acpi_ds_execute_arguments(node, node,
					   obj_desc->buffer.aml_length,
					   obj_desc->buffer.aml_start);
	return_ACPI_STATUS(status);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ds_get_package_arguments
 *
 * PARAMETERS:  obj_desc        - A valid Package object
 *
 * RETURN:      Status.
 *
 * DESCRIPTION: Get Package length and initializer byte list. This implements
 *              the late evaluation of these attributes.
 *
 ******************************************************************************/

acpi_status acpi_ds_get_package_arguments(union acpi_operand_object *obj_desc)
{
	struct acpi_namespace_node *node;
	acpi_status status;

	ACPI_FUNCTION_TRACE_PTR(ds_get_package_arguments, obj_desc);

	if (obj_desc->common.flags & AOPOBJ_DATA_VALID) {
		return_ACPI_STATUS(AE_OK);
	}

	/* Get the Package node */

	node = obj_desc->package.node;
	if (!node) {
		ACPI_ERROR((AE_INFO,
			    "No pointer back to namespace node in package %p",
			    obj_desc));
		return_ACPI_STATUS(AE_AML_INTERNAL);
	}

	ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Package Arg Init\n"));

	/* Execute the AML code for the term_arg arguments */

	status = acpi_ds_execute_arguments(node, node,
					   obj_desc->package.aml_length,
					   obj_desc->package.aml_start);
	return_ACPI_STATUS(status);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ds_get_region_arguments
 *
 * PARAMETERS:  obj_desc        - A valid region object
 *
 * RETURN:      Status.
 *
 * DESCRIPTION: Get region address and length. This implements the late
 *              evaluation of these region attributes.
 *
 ******************************************************************************/

acpi_status acpi_ds_get_region_arguments(union acpi_operand_object *obj_desc)
{
	struct acpi_namespace_node *node;
	acpi_status status;
	union acpi_operand_object *extra_desc;

	ACPI_FUNCTION_TRACE_PTR(ds_get_region_arguments, obj_desc);

	if (obj_desc->region.flags & AOPOBJ_DATA_VALID) {
		return_ACPI_STATUS(AE_OK);
	}

	extra_desc = acpi_ns_get_secondary_object(obj_desc);
	if (!extra_desc) {
		return_ACPI_STATUS(AE_NOT_EXIST);
	}

	/* Get the Region node */

	node = obj_desc->region.node;

	ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname
			(ACPI_TYPE_REGION, node, NULL));

	ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "[%4.4s] OpRegion Arg Init at AML %p\n",
			  acpi_ut_get_node_name(node),
			  extra_desc->extra.aml_start));

	/* Execute the argument AML */

	status = acpi_ds_execute_arguments(node, extra_desc->extra.scope_node,
					   extra_desc->extra.aml_length,
					   extra_desc->extra.aml_start);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	status = acpi_ut_add_address_range(obj_desc->region.space_id,
					   obj_desc->region.address,
					   obj_desc->region.length, node);
	return_ACPI_STATUS(status);
}
OpenPOWER on IntegriCloud