blob: c627a288e027644d5ef537eb1776098085811ed4 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/******************************************************************************
2 *
Bob Moore9ad19ac42011-02-14 16:09:40 +08003 * Module Name: dsopcode - Dispatcher suport for regions and fields
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 *
5 *****************************************************************************/
6
7/*
Bob Mooreb4e104e2011-01-17 11:05:40 +08008 * Copyright (C) 2000 - 2011, Intel Corp.
Linus Torvalds1da177e2005-04-16 15:20:36 -07009 * 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.
29 *
30 * NO WARRANTY
31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
35 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
40 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
41 * POSSIBILITY OF SUCH DAMAGES.
42 */
43
Linus Torvalds1da177e2005-04-16 15:20:36 -070044#include <acpi/acpi.h>
Len Browne2f7a772009-01-09 00:30:03 -050045#include "accommon.h"
46#include "acparser.h"
47#include "amlcode.h"
48#include "acdispat.h"
49#include "acinterp.h"
50#include "acnamesp.h"
51#include "acevents.h"
52#include "actables.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070053
54#define _COMPONENT ACPI_DISPATCHER
Len Brown4be44fc2005-08-05 00:44:28 -040055ACPI_MODULE_NAME("dsopcode")
Linus Torvalds1da177e2005-04-16 15:20:36 -070056
Robert Moore44f6c012005-04-18 22:49:35 -040057/* Local prototypes */
Len Brown4be44fc2005-08-05 00:44:28 -040058static acpi_status
Len Brown4be44fc2005-08-05 00:44:28 -040059acpi_ds_init_buffer_field(u16 aml_opcode,
60 union acpi_operand_object *obj_desc,
61 union acpi_operand_object *buffer_desc,
62 union acpi_operand_object *offset_desc,
63 union acpi_operand_object *length_desc,
64 union acpi_operand_object *result_desc);
Robert Moore44f6c012005-04-18 22:49:35 -040065
66/*******************************************************************************
Linus Torvalds1da177e2005-04-16 15:20:36 -070067 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070068 * FUNCTION: acpi_ds_initialize_region
69 *
Robert Moore44f6c012005-04-18 22:49:35 -040070 * PARAMETERS: obj_handle - Region namespace node
Linus Torvalds1da177e2005-04-16 15:20:36 -070071 *
72 * RETURN: Status
73 *
74 * DESCRIPTION: Front end to ev_initialize_region
75 *
Robert Moore44f6c012005-04-18 22:49:35 -040076 ******************************************************************************/
Linus Torvalds1da177e2005-04-16 15:20:36 -070077
Len Brown4be44fc2005-08-05 00:44:28 -040078acpi_status acpi_ds_initialize_region(acpi_handle obj_handle)
Linus Torvalds1da177e2005-04-16 15:20:36 -070079{
Len Brown4be44fc2005-08-05 00:44:28 -040080 union acpi_operand_object *obj_desc;
81 acpi_status status;
Linus Torvalds1da177e2005-04-16 15:20:36 -070082
Len Brown4be44fc2005-08-05 00:44:28 -040083 obj_desc = acpi_ns_get_attached_object(obj_handle);
Linus Torvalds1da177e2005-04-16 15:20:36 -070084
85 /* Namespace is NOT locked */
86
Len Brown4be44fc2005-08-05 00:44:28 -040087 status = acpi_ev_initialize_region(obj_desc, FALSE);
Linus Torvalds1da177e2005-04-16 15:20:36 -070088 return (status);
89}
90
Robert Moore44f6c012005-04-18 22:49:35 -040091/*******************************************************************************
Linus Torvalds1da177e2005-04-16 15:20:36 -070092 *
93 * FUNCTION: acpi_ds_init_buffer_field
94 *
95 * PARAMETERS: aml_opcode - create_xxx_field
96 * obj_desc - buffer_field object
97 * buffer_desc - Host Buffer
98 * offset_desc - Offset into buffer
Robert Moore44f6c012005-04-18 22:49:35 -040099 * length_desc - Length of field (CREATE_FIELD_OP only)
100 * result_desc - Where to store the result
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101 *
102 * RETURN: Status
103 *
104 * DESCRIPTION: Perform actual initialization of a buffer field
105 *
Robert Moore44f6c012005-04-18 22:49:35 -0400106 ******************************************************************************/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107
Robert Moore44f6c012005-04-18 22:49:35 -0400108static acpi_status
Len Brown4be44fc2005-08-05 00:44:28 -0400109acpi_ds_init_buffer_field(u16 aml_opcode,
110 union acpi_operand_object *obj_desc,
111 union acpi_operand_object *buffer_desc,
112 union acpi_operand_object *offset_desc,
113 union acpi_operand_object *length_desc,
114 union acpi_operand_object *result_desc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700115{
Len Brown4be44fc2005-08-05 00:44:28 -0400116 u32 offset;
117 u32 bit_offset;
118 u32 bit_count;
119 u8 field_flags;
120 acpi_status status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121
Bob Mooreb229cf92006-04-21 17:15:00 -0400122 ACPI_FUNCTION_TRACE_PTR(ds_init_buffer_field, obj_desc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700123
124 /* Host object must be a Buffer */
125
Bob Moore3371c192009-02-18 14:44:03 +0800126 if (buffer_desc->common.type != ACPI_TYPE_BUFFER) {
Bob Mooreb8e4d892006-01-27 16:43:00 -0500127 ACPI_ERROR((AE_INFO,
128 "Target of Create Field is not a Buffer object - %s",
129 acpi_ut_get_object_type_name(buffer_desc)));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130
131 status = AE_AML_OPERAND_TYPE;
132 goto cleanup;
133 }
134
135 /*
136 * The last parameter to all of these opcodes (result_desc) started
137 * out as a name_string, and should therefore now be a NS node
138 * after resolution in acpi_ex_resolve_operands().
139 */
Len Brown4be44fc2005-08-05 00:44:28 -0400140 if (ACPI_GET_DESCRIPTOR_TYPE(result_desc) != ACPI_DESC_TYPE_NAMED) {
Bob Mooreb8e4d892006-01-27 16:43:00 -0500141 ACPI_ERROR((AE_INFO,
142 "(%s) destination not a NS Node [%s]",
143 acpi_ps_get_opcode_name(aml_opcode),
144 acpi_ut_get_descriptor_name(result_desc)));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145
146 status = AE_AML_OPERAND_TYPE;
147 goto cleanup;
148 }
149
150 offset = (u32) offset_desc->integer.value;
151
152 /*
153 * Setup the Bit offsets and counts, according to the opcode
154 */
155 switch (aml_opcode) {
156 case AML_CREATE_FIELD_OP:
157
158 /* Offset is in bits, count is in bits */
159
Robert Moore44f6c012005-04-18 22:49:35 -0400160 field_flags = AML_FIELD_ACCESS_BYTE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161 bit_offset = offset;
Len Brown4be44fc2005-08-05 00:44:28 -0400162 bit_count = (u32) length_desc->integer.value;
Robert Moore44f6c012005-04-18 22:49:35 -0400163
164 /* Must have a valid (>0) bit count */
165
166 if (bit_count == 0) {
Bob Mooreb8e4d892006-01-27 16:43:00 -0500167 ACPI_ERROR((AE_INFO,
Bob Mooreb229cf92006-04-21 17:15:00 -0400168 "Attempt to CreateField of length zero"));
Robert Moore44f6c012005-04-18 22:49:35 -0400169 status = AE_AML_OPERAND_VALUE;
170 goto cleanup;
171 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700172 break;
173
174 case AML_CREATE_BIT_FIELD_OP:
175
176 /* Offset is in bits, Field is one bit */
177
178 bit_offset = offset;
Len Brown4be44fc2005-08-05 00:44:28 -0400179 bit_count = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180 field_flags = AML_FIELD_ACCESS_BYTE;
181 break;
182
183 case AML_CREATE_BYTE_FIELD_OP:
184
185 /* Offset is in bytes, field is one byte */
186
187 bit_offset = 8 * offset;
Len Brown4be44fc2005-08-05 00:44:28 -0400188 bit_count = 8;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700189 field_flags = AML_FIELD_ACCESS_BYTE;
190 break;
191
192 case AML_CREATE_WORD_FIELD_OP:
193
194 /* Offset is in bytes, field is one word */
195
196 bit_offset = 8 * offset;
Len Brown4be44fc2005-08-05 00:44:28 -0400197 bit_count = 16;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198 field_flags = AML_FIELD_ACCESS_WORD;
199 break;
200
201 case AML_CREATE_DWORD_FIELD_OP:
202
203 /* Offset is in bytes, field is one dword */
204
205 bit_offset = 8 * offset;
Len Brown4be44fc2005-08-05 00:44:28 -0400206 bit_count = 32;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207 field_flags = AML_FIELD_ACCESS_DWORD;
208 break;
209
210 case AML_CREATE_QWORD_FIELD_OP:
211
212 /* Offset is in bytes, field is one qword */
213
214 bit_offset = 8 * offset;
Len Brown4be44fc2005-08-05 00:44:28 -0400215 bit_count = 64;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700216 field_flags = AML_FIELD_ACCESS_QWORD;
217 break;
218
219 default:
220
Bob Mooreb8e4d892006-01-27 16:43:00 -0500221 ACPI_ERROR((AE_INFO,
Bob Mooref6a22b02010-03-05 17:56:40 +0800222 "Unknown field creation opcode 0x%02X",
223 aml_opcode));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700224 status = AE_AML_BAD_OPCODE;
225 goto cleanup;
226 }
227
228 /* Entire field must fit within the current length of the buffer */
229
Len Brown4be44fc2005-08-05 00:44:28 -0400230 if ((bit_offset + bit_count) > (8 * (u32) buffer_desc->buffer.length)) {
Bob Mooreb8e4d892006-01-27 16:43:00 -0500231 ACPI_ERROR((AE_INFO,
Bob Mooref6a22b02010-03-05 17:56:40 +0800232 "Field [%4.4s] at %u exceeds Buffer [%4.4s] size %u (bits)",
Bob Mooreb8e4d892006-01-27 16:43:00 -0500233 acpi_ut_get_node_name(result_desc),
234 bit_offset + bit_count,
235 acpi_ut_get_node_name(buffer_desc->buffer.node),
236 8 * (u32) buffer_desc->buffer.length));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700237 status = AE_AML_BUFFER_LIMIT;
238 goto cleanup;
239 }
240
241 /*
242 * Initialize areas of the field object that are common to all fields
Robert Moore44f6c012005-04-18 22:49:35 -0400243 * For field_flags, use LOCK_RULE = 0 (NO_LOCK),
244 * UPDATE_RULE = 0 (UPDATE_PRESERVE)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700245 */
Len Brown4be44fc2005-08-05 00:44:28 -0400246 status = acpi_ex_prep_common_field_object(obj_desc, field_flags, 0,
247 bit_offset, bit_count);
248 if (ACPI_FAILURE(status)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700249 goto cleanup;
250 }
251
252 obj_desc->buffer_field.buffer_obj = buffer_desc;
253
254 /* Reference count for buffer_desc inherits obj_desc count */
255
Robert Moore44f6c012005-04-18 22:49:35 -0400256 buffer_desc->common.reference_count = (u16)
Len Brown4be44fc2005-08-05 00:44:28 -0400257 (buffer_desc->common.reference_count +
258 obj_desc->common.reference_count);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259
Len Brown4be44fc2005-08-05 00:44:28 -0400260 cleanup:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700261
262 /* Always delete the operands */
263
Len Brown4be44fc2005-08-05 00:44:28 -0400264 acpi_ut_remove_reference(offset_desc);
265 acpi_ut_remove_reference(buffer_desc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700266
267 if (aml_opcode == AML_CREATE_FIELD_OP) {
Len Brown4be44fc2005-08-05 00:44:28 -0400268 acpi_ut_remove_reference(length_desc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269 }
270
271 /* On failure, delete the result descriptor */
272
Len Brown4be44fc2005-08-05 00:44:28 -0400273 if (ACPI_FAILURE(status)) {
274 acpi_ut_remove_reference(result_desc); /* Result descriptor */
275 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700276 /* Now the address and length are valid for this buffer_field */
277
278 obj_desc->buffer_field.flags |= AOPOBJ_DATA_VALID;
279 }
280
Len Brown4be44fc2005-08-05 00:44:28 -0400281 return_ACPI_STATUS(status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700282}
283
Robert Moore44f6c012005-04-18 22:49:35 -0400284/*******************************************************************************
Linus Torvalds1da177e2005-04-16 15:20:36 -0700285 *
286 * FUNCTION: acpi_ds_eval_buffer_field_operands
287 *
288 * PARAMETERS: walk_state - Current walk
289 * Op - A valid buffer_field Op object
290 *
291 * RETURN: Status
292 *
293 * DESCRIPTION: Get buffer_field Buffer and Index
294 * Called from acpi_ds_exec_end_op during buffer_field parse tree walk
295 *
Robert Moore44f6c012005-04-18 22:49:35 -0400296 ******************************************************************************/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700297
298acpi_status
Len Brown4be44fc2005-08-05 00:44:28 -0400299acpi_ds_eval_buffer_field_operands(struct acpi_walk_state *walk_state,
300 union acpi_parse_object *op)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700301{
Len Brown4be44fc2005-08-05 00:44:28 -0400302 acpi_status status;
303 union acpi_operand_object *obj_desc;
304 struct acpi_namespace_node *node;
305 union acpi_parse_object *next_op;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700306
Bob Mooreb229cf92006-04-21 17:15:00 -0400307 ACPI_FUNCTION_TRACE_PTR(ds_eval_buffer_field_operands, op);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700308
309 /*
310 * This is where we evaluate the address and length fields of the
311 * create_xxx_field declaration
312 */
Len Brown4be44fc2005-08-05 00:44:28 -0400313 node = op->common.node;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700314
315 /* next_op points to the op that holds the Buffer */
316
317 next_op = op->common.value.arg;
318
319 /* Evaluate/create the address and length operands */
320
Len Brown4be44fc2005-08-05 00:44:28 -0400321 status = acpi_ds_create_operands(walk_state, next_op);
322 if (ACPI_FAILURE(status)) {
323 return_ACPI_STATUS(status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700324 }
325
Len Brown4be44fc2005-08-05 00:44:28 -0400326 obj_desc = acpi_ns_get_attached_object(node);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700327 if (!obj_desc) {
Len Brown4be44fc2005-08-05 00:44:28 -0400328 return_ACPI_STATUS(AE_NOT_EXIST);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329 }
330
331 /* Resolve the operands */
332
Len Brown4be44fc2005-08-05 00:44:28 -0400333 status = acpi_ex_resolve_operands(op->common.aml_opcode,
334 ACPI_WALK_OPERANDS, walk_state);
Len Brown4be44fc2005-08-05 00:44:28 -0400335 if (ACPI_FAILURE(status)) {
Bob Mooref6a22b02010-03-05 17:56:40 +0800336 ACPI_ERROR((AE_INFO, "(%s) bad operand(s), status 0x%X",
Bob Mooreb8e4d892006-01-27 16:43:00 -0500337 acpi_ps_get_opcode_name(op->common.aml_opcode),
338 status));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339
Len Brown4be44fc2005-08-05 00:44:28 -0400340 return_ACPI_STATUS(status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700341 }
342
343 /* Initialize the Buffer Field */
344
345 if (op->common.aml_opcode == AML_CREATE_FIELD_OP) {
Bob Moore52fc0b02006-10-02 00:00:00 -0400346
Linus Torvalds1da177e2005-04-16 15:20:36 -0700347 /* NOTE: Slightly different operands for this opcode */
348
Len Brown4be44fc2005-08-05 00:44:28 -0400349 status =
350 acpi_ds_init_buffer_field(op->common.aml_opcode, obj_desc,
351 walk_state->operands[0],
352 walk_state->operands[1],
353 walk_state->operands[2],
354 walk_state->operands[3]);
355 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700356 /* All other, create_xxx_field opcodes */
357
Len Brown4be44fc2005-08-05 00:44:28 -0400358 status =
359 acpi_ds_init_buffer_field(op->common.aml_opcode, obj_desc,
360 walk_state->operands[0],
361 walk_state->operands[1], NULL,
362 walk_state->operands[2]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363 }
364
Len Brown4be44fc2005-08-05 00:44:28 -0400365 return_ACPI_STATUS(status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700366}
367
Robert Moore44f6c012005-04-18 22:49:35 -0400368/*******************************************************************************
Linus Torvalds1da177e2005-04-16 15:20:36 -0700369 *
370 * FUNCTION: acpi_ds_eval_region_operands
371 *
372 * PARAMETERS: walk_state - Current walk
373 * Op - A valid region Op object
374 *
375 * RETURN: Status
376 *
377 * DESCRIPTION: Get region address and length
378 * Called from acpi_ds_exec_end_op during op_region parse tree walk
379 *
Robert Moore44f6c012005-04-18 22:49:35 -0400380 ******************************************************************************/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700381
382acpi_status
Len Brown4be44fc2005-08-05 00:44:28 -0400383acpi_ds_eval_region_operands(struct acpi_walk_state *walk_state,
384 union acpi_parse_object *op)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700385{
Len Brown4be44fc2005-08-05 00:44:28 -0400386 acpi_status status;
387 union acpi_operand_object *obj_desc;
388 union acpi_operand_object *operand_desc;
389 struct acpi_namespace_node *node;
390 union acpi_parse_object *next_op;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700391
Bob Mooreb229cf92006-04-21 17:15:00 -0400392 ACPI_FUNCTION_TRACE_PTR(ds_eval_region_operands, op);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393
394 /*
Robert Moore44f6c012005-04-18 22:49:35 -0400395 * This is where we evaluate the address and length fields of the
396 * op_region declaration
Linus Torvalds1da177e2005-04-16 15:20:36 -0700397 */
Len Brown4be44fc2005-08-05 00:44:28 -0400398 node = op->common.node;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700399
400 /* next_op points to the op that holds the space_iD */
401
402 next_op = op->common.value.arg;
403
404 /* next_op points to address op */
405
406 next_op = next_op->common.next;
407
408 /* Evaluate/create the address and length operands */
409
Len Brown4be44fc2005-08-05 00:44:28 -0400410 status = acpi_ds_create_operands(walk_state, next_op);
411 if (ACPI_FAILURE(status)) {
412 return_ACPI_STATUS(status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700413 }
414
415 /* Resolve the length and address operands to numbers */
416
Len Brown4be44fc2005-08-05 00:44:28 -0400417 status = acpi_ex_resolve_operands(op->common.aml_opcode,
418 ACPI_WALK_OPERANDS, walk_state);
419 if (ACPI_FAILURE(status)) {
420 return_ACPI_STATUS(status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700421 }
422
Len Brown4be44fc2005-08-05 00:44:28 -0400423 obj_desc = acpi_ns_get_attached_object(node);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700424 if (!obj_desc) {
Len Brown4be44fc2005-08-05 00:44:28 -0400425 return_ACPI_STATUS(AE_NOT_EXIST);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700426 }
427
428 /*
429 * Get the length operand and save it
430 * (at Top of stack)
431 */
432 operand_desc = walk_state->operands[walk_state->num_operands - 1];
433
434 obj_desc->region.length = (u32) operand_desc->integer.value;
Len Brown4be44fc2005-08-05 00:44:28 -0400435 acpi_ut_remove_reference(operand_desc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700436
437 /*
438 * Get the address and save it
439 * (at top of stack - 1)
440 */
441 operand_desc = walk_state->operands[walk_state->num_operands - 2];
442
Robert Moore44f6c012005-04-18 22:49:35 -0400443 obj_desc->region.address = (acpi_physical_address)
Len Brown4be44fc2005-08-05 00:44:28 -0400444 operand_desc->integer.value;
445 acpi_ut_remove_reference(operand_desc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700446
Bob Mooreb229cf92006-04-21 17:15:00 -0400447 ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "RgnObj %p Addr %8.8X%8.8X Len %X\n",
Len Brown4be44fc2005-08-05 00:44:28 -0400448 obj_desc,
Bob Mooreb7f9f042008-04-10 19:06:40 +0400449 ACPI_FORMAT_NATIVE_UINT(obj_desc->region.address),
Len Brown4be44fc2005-08-05 00:44:28 -0400450 obj_desc->region.length));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700451
452 /* Now the address and length are valid for this opregion */
453
454 obj_desc->region.flags |= AOPOBJ_DATA_VALID;
455
Len Brown4be44fc2005-08-05 00:44:28 -0400456 return_ACPI_STATUS(status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700457}
458
Robert Moore44f6c012005-04-18 22:49:35 -0400459/*******************************************************************************
Linus Torvalds1da177e2005-04-16 15:20:36 -0700460 *
Lin Ming941f48b2008-04-10 19:06:41 +0400461 * FUNCTION: acpi_ds_eval_table_region_operands
462 *
463 * PARAMETERS: walk_state - Current walk
464 * Op - A valid region Op object
465 *
466 * RETURN: Status
467 *
Bob Moore9ad19ac42011-02-14 16:09:40 +0800468 * DESCRIPTION: Get region address and length.
469 * Called from acpi_ds_exec_end_op during data_table_region parse
470 * tree walk.
Lin Ming941f48b2008-04-10 19:06:41 +0400471 *
472 ******************************************************************************/
473
474acpi_status
475acpi_ds_eval_table_region_operands(struct acpi_walk_state *walk_state,
476 union acpi_parse_object *op)
477{
478 acpi_status status;
479 union acpi_operand_object *obj_desc;
480 union acpi_operand_object **operand;
481 struct acpi_namespace_node *node;
482 union acpi_parse_object *next_op;
Bob Moore67a119f2008-06-10 13:42:13 +0800483 u32 table_index;
Lin Ming941f48b2008-04-10 19:06:41 +0400484 struct acpi_table_header *table;
485
486 ACPI_FUNCTION_TRACE_PTR(ds_eval_table_region_operands, op);
487
488 /*
489 * This is where we evaluate the signature_string and oem_iDString
490 * and oem_table_iDString of the data_table_region declaration
491 */
492 node = op->common.node;
493
494 /* next_op points to signature_string op */
495
496 next_op = op->common.value.arg;
497
498 /*
499 * Evaluate/create the signature_string and oem_iDString
500 * and oem_table_iDString operands
501 */
502 status = acpi_ds_create_operands(walk_state, next_op);
503 if (ACPI_FAILURE(status)) {
504 return_ACPI_STATUS(status);
505 }
506
507 /*
508 * Resolve the signature_string and oem_iDString
509 * and oem_table_iDString operands
510 */
511 status = acpi_ex_resolve_operands(op->common.aml_opcode,
512 ACPI_WALK_OPERANDS, walk_state);
513 if (ACPI_FAILURE(status)) {
514 return_ACPI_STATUS(status);
515 }
516
Lin Ming941f48b2008-04-10 19:06:41 +0400517 operand = &walk_state->operands[0];
518
519 /* Find the ACPI table */
520
521 status = acpi_tb_find_table(operand[0]->string.pointer,
522 operand[1]->string.pointer,
523 operand[2]->string.pointer, &table_index);
524 if (ACPI_FAILURE(status)) {
525 return_ACPI_STATUS(status);
526 }
527
528 acpi_ut_remove_reference(operand[0]);
529 acpi_ut_remove_reference(operand[1]);
530 acpi_ut_remove_reference(operand[2]);
531
532 status = acpi_get_table_by_index(table_index, &table);
533 if (ACPI_FAILURE(status)) {
534 return_ACPI_STATUS(status);
535 }
536
537 obj_desc = acpi_ns_get_attached_object(node);
538 if (!obj_desc) {
539 return_ACPI_STATUS(AE_NOT_EXIST);
540 }
541
542 obj_desc->region.address =
543 (acpi_physical_address) ACPI_TO_INTEGER(table);
544 obj_desc->region.length = table->length;
545
546 ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "RgnObj %p Addr %8.8X%8.8X Len %X\n",
547 obj_desc,
548 ACPI_FORMAT_NATIVE_UINT(obj_desc->region.address),
549 obj_desc->region.length));
550
551 /* Now the address and length are valid for this opregion */
552
553 obj_desc->region.flags |= AOPOBJ_DATA_VALID;
554
555 return_ACPI_STATUS(status);
556}
557
558/*******************************************************************************
559 *
Linus Torvalds1da177e2005-04-16 15:20:36 -0700560 * FUNCTION: acpi_ds_eval_data_object_operands
561 *
562 * PARAMETERS: walk_state - Current walk
563 * Op - A valid data_object Op object
564 * obj_desc - data_object
565 *
566 * RETURN: Status
567 *
568 * DESCRIPTION: Get the operands and complete the following data object types:
569 * Buffer, Package.
570 *
Robert Moore44f6c012005-04-18 22:49:35 -0400571 ******************************************************************************/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700572
573acpi_status
Len Brown4be44fc2005-08-05 00:44:28 -0400574acpi_ds_eval_data_object_operands(struct acpi_walk_state *walk_state,
575 union acpi_parse_object *op,
576 union acpi_operand_object *obj_desc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700577{
Len Brown4be44fc2005-08-05 00:44:28 -0400578 acpi_status status;
579 union acpi_operand_object *arg_desc;
580 u32 length;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700581
Bob Mooreb229cf92006-04-21 17:15:00 -0400582 ACPI_FUNCTION_TRACE(ds_eval_data_object_operands);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700583
584 /* The first operand (for all of these data objects) is the length */
585
Bob Moore773069d2008-04-10 19:06:36 +0400586 /*
587 * Set proper index into operand stack for acpi_ds_obj_stack_push
588 * invoked inside acpi_ds_create_operand.
589 */
590 walk_state->operand_index = walk_state->num_operands;
591
Len Brown4be44fc2005-08-05 00:44:28 -0400592 status = acpi_ds_create_operand(walk_state, op->common.value.arg, 1);
593 if (ACPI_FAILURE(status)) {
594 return_ACPI_STATUS(status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700595 }
596
Len Brown4be44fc2005-08-05 00:44:28 -0400597 status = acpi_ex_resolve_operands(walk_state->opcode,
598 &(walk_state->
599 operands[walk_state->num_operands -
600 1]), walk_state);
601 if (ACPI_FAILURE(status)) {
602 return_ACPI_STATUS(status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700603 }
604
605 /* Extract length operand */
606
Len Brown4be44fc2005-08-05 00:44:28 -0400607 arg_desc = walk_state->operands[walk_state->num_operands - 1];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700608 length = (u32) arg_desc->integer.value;
609
610 /* Cleanup for length operand */
611
Len Brown4be44fc2005-08-05 00:44:28 -0400612 status = acpi_ds_obj_stack_pop(1, walk_state);
613 if (ACPI_FAILURE(status)) {
614 return_ACPI_STATUS(status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700615 }
616
Len Brown4be44fc2005-08-05 00:44:28 -0400617 acpi_ut_remove_reference(arg_desc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700618
619 /*
620 * Create the actual data object
621 */
622 switch (op->common.aml_opcode) {
623 case AML_BUFFER_OP:
624
Len Brown4be44fc2005-08-05 00:44:28 -0400625 status =
626 acpi_ds_build_internal_buffer_obj(walk_state, op, length,
627 &obj_desc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700628 break;
629
630 case AML_PACKAGE_OP:
631 case AML_VAR_PACKAGE_OP:
632
Len Brown4be44fc2005-08-05 00:44:28 -0400633 status =
634 acpi_ds_build_internal_package_obj(walk_state, op, length,
635 &obj_desc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700636 break;
637
638 default:
Len Brown4be44fc2005-08-05 00:44:28 -0400639 return_ACPI_STATUS(AE_AML_BAD_OPCODE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700640 }
641
Len Brown4be44fc2005-08-05 00:44:28 -0400642 if (ACPI_SUCCESS(status)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700643 /*
Robert Moore44f6c012005-04-18 22:49:35 -0400644 * Return the object in the walk_state, unless the parent is a package -
Linus Torvalds1da177e2005-04-16 15:20:36 -0700645 * in this case, the return object will be stored in the parse tree
646 * for the package.
647 */
648 if ((!op->common.parent) ||
Len Brown4be44fc2005-08-05 00:44:28 -0400649 ((op->common.parent->common.aml_opcode != AML_PACKAGE_OP) &&
650 (op->common.parent->common.aml_opcode !=
651 AML_VAR_PACKAGE_OP)
Len Brownfd350942007-05-09 23:34:35 -0400652 && (op->common.parent->common.aml_opcode != AML_NAME_OP))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700653 walk_state->result_obj = obj_desc;
654 }
655 }
656
Len Brown4be44fc2005-08-05 00:44:28 -0400657 return_ACPI_STATUS(status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700658}
659
Linus Torvalds1da177e2005-04-16 15:20:36 -0700660/*******************************************************************************
661 *
Lin Mingef805d92008-04-10 19:06:41 +0400662 * FUNCTION: acpi_ds_eval_bank_field_operands
663 *
664 * PARAMETERS: walk_state - Current walk
665 * Op - A valid bank_field Op object
666 *
667 * RETURN: Status
668 *
669 * DESCRIPTION: Get bank_field bank_value
670 * Called from acpi_ds_exec_end_op during bank_field parse tree walk
671 *
672 ******************************************************************************/
673
674acpi_status
675acpi_ds_eval_bank_field_operands(struct acpi_walk_state *walk_state,
676 union acpi_parse_object *op)
677{
678 acpi_status status;
679 union acpi_operand_object *obj_desc;
680 union acpi_operand_object *operand_desc;
681 struct acpi_namespace_node *node;
682 union acpi_parse_object *next_op;
683 union acpi_parse_object *arg;
684
685 ACPI_FUNCTION_TRACE_PTR(ds_eval_bank_field_operands, op);
686
687 /*
688 * This is where we evaluate the bank_value field of the
689 * bank_field declaration
690 */
691
692 /* next_op points to the op that holds the Region */
693
694 next_op = op->common.value.arg;
695
696 /* next_op points to the op that holds the Bank Register */
697
698 next_op = next_op->common.next;
699
700 /* next_op points to the op that holds the Bank Value */
701
702 next_op = next_op->common.next;
703
704 /*
705 * Set proper index into operand stack for acpi_ds_obj_stack_push
706 * invoked inside acpi_ds_create_operand.
707 *
708 * We use walk_state->Operands[0] to store the evaluated bank_value
709 */
710 walk_state->operand_index = 0;
711
712 status = acpi_ds_create_operand(walk_state, next_op, 0);
713 if (ACPI_FAILURE(status)) {
714 return_ACPI_STATUS(status);
715 }
716
717 status = acpi_ex_resolve_to_value(&walk_state->operands[0], walk_state);
718 if (ACPI_FAILURE(status)) {
719 return_ACPI_STATUS(status);
720 }
721
Bob Moore71d993e2008-06-10 14:25:05 +0800722 ACPI_DUMP_OPERANDS(ACPI_WALK_OPERANDS,
723 acpi_ps_get_opcode_name(op->common.aml_opcode), 1);
Lin Mingef805d92008-04-10 19:06:41 +0400724 /*
725 * Get the bank_value operand and save it
726 * (at Top of stack)
727 */
728 operand_desc = walk_state->operands[0];
729
730 /* Arg points to the start Bank Field */
731
732 arg = acpi_ps_get_arg(op, 4);
733 while (arg) {
734
735 /* Ignore OFFSET and ACCESSAS terms here */
736
737 if (arg->common.aml_opcode == AML_INT_NAMEDFIELD_OP) {
738 node = arg->common.node;
739
740 obj_desc = acpi_ns_get_attached_object(node);
741 if (!obj_desc) {
742 return_ACPI_STATUS(AE_NOT_EXIST);
743 }
744
745 obj_desc->bank_field.value =
746 (u32) operand_desc->integer.value;
747 }
748
749 /* Move to next field in the list */
750
751 arg = arg->common.next;
752 }
753
754 acpi_ut_remove_reference(operand_desc);
755 return_ACPI_STATUS(status);
756}