Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Module Name: dsopcode - Dispatcher Op Region support and handling of |
| 4 | * "control" opcodes |
| 5 | * |
| 6 | *****************************************************************************/ |
| 7 | |
| 8 | /* |
Bob Moore | a8357b0 | 2010-01-22 19:07:36 +0800 | [diff] [blame] | 9 | * Copyright (C) 2000 - 2010, Intel Corp. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | * All rights reserved. |
| 11 | * |
| 12 | * Redistribution and use in source and binary forms, with or without |
| 13 | * modification, are permitted provided that the following conditions |
| 14 | * are met: |
| 15 | * 1. Redistributions of source code must retain the above copyright |
| 16 | * notice, this list of conditions, and the following disclaimer, |
| 17 | * without modification. |
| 18 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
| 19 | * substantially similar to the "NO WARRANTY" disclaimer below |
| 20 | * ("Disclaimer") and any redistribution must be conditioned upon |
| 21 | * including a substantially similar Disclaimer requirement for further |
| 22 | * binary redistribution. |
| 23 | * 3. Neither the names of the above-listed copyright holders nor the names |
| 24 | * of any contributors may be used to endorse or promote products derived |
| 25 | * from this software without specific prior written permission. |
| 26 | * |
| 27 | * Alternatively, this software may be distributed under the terms of the |
| 28 | * GNU General Public License ("GPL") version 2 as published by the Free |
| 29 | * Software Foundation. |
| 30 | * |
| 31 | * NO WARRANTY |
| 32 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 33 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 34 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
| 35 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 36 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 37 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 38 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 39 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 40 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| 41 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 42 | * POSSIBILITY OF SUCH DAMAGES. |
| 43 | */ |
| 44 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | #include <acpi/acpi.h> |
Len Brown | e2f7a77 | 2009-01-09 00:30:03 -0500 | [diff] [blame] | 46 | #include "accommon.h" |
| 47 | #include "acparser.h" |
| 48 | #include "amlcode.h" |
| 49 | #include "acdispat.h" |
| 50 | #include "acinterp.h" |
| 51 | #include "acnamesp.h" |
| 52 | #include "acevents.h" |
| 53 | #include "actables.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | |
| 55 | #define _COMPONENT ACPI_DISPATCHER |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 56 | ACPI_MODULE_NAME("dsopcode") |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 58 | /* Local prototypes */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 59 | static acpi_status |
| 60 | acpi_ds_execute_arguments(struct acpi_namespace_node *node, |
| 61 | struct acpi_namespace_node *scope_node, |
| 62 | u32 aml_length, u8 * aml_start); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 64 | static acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 65 | acpi_ds_init_buffer_field(u16 aml_opcode, |
| 66 | union acpi_operand_object *obj_desc, |
| 67 | union acpi_operand_object *buffer_desc, |
| 68 | union acpi_operand_object *offset_desc, |
| 69 | union acpi_operand_object *length_desc, |
| 70 | union acpi_operand_object *result_desc); |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 71 | |
| 72 | /******************************************************************************* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | * |
| 74 | * FUNCTION: acpi_ds_execute_arguments |
| 75 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 76 | * PARAMETERS: Node - Object NS node |
| 77 | * scope_node - Parent NS node |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | * aml_length - Length of executable AML |
| 79 | * aml_start - Pointer to the AML |
| 80 | * |
| 81 | * RETURN: Status. |
| 82 | * |
| 83 | * DESCRIPTION: Late (deferred) execution of region or field arguments |
| 84 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 85 | ******************************************************************************/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 87 | static acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 88 | acpi_ds_execute_arguments(struct acpi_namespace_node *node, |
| 89 | struct acpi_namespace_node *scope_node, |
| 90 | u32 aml_length, u8 * aml_start) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 92 | acpi_status status; |
| 93 | union acpi_parse_object *op; |
| 94 | struct acpi_walk_state *walk_state; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 96 | ACPI_FUNCTION_TRACE(ds_execute_arguments); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | |
| 98 | /* |
| 99 | * Allocate a new parser op to be the root of the parsed tree |
| 100 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 101 | op = acpi_ps_alloc_op(AML_INT_EVAL_SUBTREE_OP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | if (!op) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 103 | return_ACPI_STATUS(AE_NO_MEMORY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | } |
| 105 | |
| 106 | /* Save the Node for use in acpi_ps_parse_aml */ |
| 107 | |
| 108 | op->common.node = scope_node; |
| 109 | |
| 110 | /* Create and initialize a new parser state */ |
| 111 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 112 | walk_state = acpi_ds_create_walk_state(0, NULL, NULL, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | if (!walk_state) { |
Robert Moore | 88ac00f | 2005-05-26 00:00:00 -0400 | [diff] [blame] | 114 | status = AE_NO_MEMORY; |
| 115 | goto cleanup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | } |
| 117 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 118 | status = acpi_ds_init_aml_walk(walk_state, op, NULL, aml_start, |
Bob Moore | ec3153f | 2007-02-02 19:48:21 +0300 | [diff] [blame] | 119 | aml_length, NULL, ACPI_IMODE_LOAD_PASS1); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 120 | if (ACPI_FAILURE(status)) { |
| 121 | acpi_ds_delete_walk_state(walk_state); |
Robert Moore | 88ac00f | 2005-05-26 00:00:00 -0400 | [diff] [blame] | 122 | goto cleanup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | } |
| 124 | |
| 125 | /* Mark this parse as a deferred opcode */ |
| 126 | |
| 127 | walk_state->parse_flags = ACPI_PARSE_DEFERRED_OP; |
| 128 | walk_state->deferred_node = node; |
| 129 | |
| 130 | /* Pass1: Parse the entire declaration */ |
| 131 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 132 | status = acpi_ps_parse_aml(walk_state); |
| 133 | if (ACPI_FAILURE(status)) { |
Robert Moore | 88ac00f | 2005-05-26 00:00:00 -0400 | [diff] [blame] | 134 | goto cleanup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | } |
| 136 | |
| 137 | /* Get and init the Op created above */ |
| 138 | |
| 139 | op->common.node = node; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 140 | acpi_ps_delete_parse_tree(op); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | |
| 142 | /* Evaluate the deferred arguments */ |
| 143 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 144 | op = acpi_ps_alloc_op(AML_INT_EVAL_SUBTREE_OP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | if (!op) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 146 | return_ACPI_STATUS(AE_NO_MEMORY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | } |
| 148 | |
| 149 | op->common.node = scope_node; |
| 150 | |
| 151 | /* Create and initialize a new parser state */ |
| 152 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 153 | walk_state = acpi_ds_create_walk_state(0, NULL, NULL, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | if (!walk_state) { |
Robert Moore | 88ac00f | 2005-05-26 00:00:00 -0400 | [diff] [blame] | 155 | status = AE_NO_MEMORY; |
| 156 | goto cleanup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | } |
| 158 | |
| 159 | /* Execute the opcode and arguments */ |
| 160 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 161 | status = acpi_ds_init_aml_walk(walk_state, op, NULL, aml_start, |
Bob Moore | ec3153f | 2007-02-02 19:48:21 +0300 | [diff] [blame] | 162 | aml_length, NULL, ACPI_IMODE_EXECUTE); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 163 | if (ACPI_FAILURE(status)) { |
| 164 | acpi_ds_delete_walk_state(walk_state); |
Robert Moore | 88ac00f | 2005-05-26 00:00:00 -0400 | [diff] [blame] | 165 | goto cleanup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | } |
| 167 | |
| 168 | /* Mark this execution as a deferred opcode */ |
| 169 | |
| 170 | walk_state->deferred_node = node; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 171 | status = acpi_ps_parse_aml(walk_state); |
Robert Moore | 88ac00f | 2005-05-26 00:00:00 -0400 | [diff] [blame] | 172 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 173 | cleanup: |
| 174 | acpi_ps_delete_parse_tree(op); |
| 175 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | } |
| 177 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 178 | /******************************************************************************* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | * |
| 180 | * FUNCTION: acpi_ds_get_buffer_field_arguments |
| 181 | * |
| 182 | * PARAMETERS: obj_desc - A valid buffer_field object |
| 183 | * |
| 184 | * RETURN: Status. |
| 185 | * |
| 186 | * DESCRIPTION: Get buffer_field Buffer and Index. This implements the late |
| 187 | * evaluation of these field attributes. |
| 188 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 189 | ******************************************************************************/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | |
| 191 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 192 | acpi_ds_get_buffer_field_arguments(union acpi_operand_object *obj_desc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 194 | union acpi_operand_object *extra_desc; |
| 195 | struct acpi_namespace_node *node; |
| 196 | acpi_status status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 198 | ACPI_FUNCTION_TRACE_PTR(ds_get_buffer_field_arguments, obj_desc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | |
| 200 | if (obj_desc->common.flags & AOPOBJ_DATA_VALID) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 201 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | } |
| 203 | |
| 204 | /* Get the AML pointer (method object) and buffer_field node */ |
| 205 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 206 | extra_desc = acpi_ns_get_secondary_object(obj_desc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | node = obj_desc->buffer_field.node; |
| 208 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 209 | ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname |
| 210 | (ACPI_TYPE_BUFFER_FIELD, node, NULL)); |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 211 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "[%4.4s] BufferField Arg Init\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 212 | acpi_ut_get_node_name(node))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | |
| 214 | /* Execute the AML code for the term_arg arguments */ |
| 215 | |
Alexey Starikovskiy | c45b5c0 | 2010-05-26 11:53:07 +0800 | [diff] [blame] | 216 | status = acpi_ds_execute_arguments(node, node->parent, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 217 | extra_desc->extra.aml_length, |
| 218 | extra_desc->extra.aml_start); |
| 219 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | } |
| 221 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 222 | /******************************************************************************* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | * |
Lin Ming | ef805d9 | 2008-04-10 19:06:41 +0400 | [diff] [blame] | 224 | * FUNCTION: acpi_ds_get_bank_field_arguments |
| 225 | * |
| 226 | * PARAMETERS: obj_desc - A valid bank_field object |
| 227 | * |
| 228 | * RETURN: Status. |
| 229 | * |
| 230 | * DESCRIPTION: Get bank_field bank_value. This implements the late |
| 231 | * evaluation of these field attributes. |
| 232 | * |
| 233 | ******************************************************************************/ |
| 234 | |
| 235 | acpi_status |
| 236 | acpi_ds_get_bank_field_arguments(union acpi_operand_object *obj_desc) |
| 237 | { |
| 238 | union acpi_operand_object *extra_desc; |
| 239 | struct acpi_namespace_node *node; |
| 240 | acpi_status status; |
| 241 | |
| 242 | ACPI_FUNCTION_TRACE_PTR(ds_get_bank_field_arguments, obj_desc); |
| 243 | |
| 244 | if (obj_desc->common.flags & AOPOBJ_DATA_VALID) { |
| 245 | return_ACPI_STATUS(AE_OK); |
| 246 | } |
| 247 | |
| 248 | /* Get the AML pointer (method object) and bank_field node */ |
| 249 | |
| 250 | extra_desc = acpi_ns_get_secondary_object(obj_desc); |
| 251 | node = obj_desc->bank_field.node; |
| 252 | |
| 253 | ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname |
| 254 | (ACPI_TYPE_LOCAL_BANK_FIELD, node, NULL)); |
| 255 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "[%4.4s] BankField Arg Init\n", |
| 256 | acpi_ut_get_node_name(node))); |
| 257 | |
| 258 | /* Execute the AML code for the term_arg arguments */ |
| 259 | |
Alexey Starikovskiy | c45b5c0 | 2010-05-26 11:53:07 +0800 | [diff] [blame] | 260 | status = acpi_ds_execute_arguments(node, node->parent, |
Lin Ming | ef805d9 | 2008-04-10 19:06:41 +0400 | [diff] [blame] | 261 | extra_desc->extra.aml_length, |
| 262 | extra_desc->extra.aml_start); |
| 263 | return_ACPI_STATUS(status); |
| 264 | } |
| 265 | |
| 266 | /******************************************************************************* |
| 267 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | * FUNCTION: acpi_ds_get_buffer_arguments |
| 269 | * |
| 270 | * PARAMETERS: obj_desc - A valid Buffer object |
| 271 | * |
| 272 | * RETURN: Status. |
| 273 | * |
| 274 | * DESCRIPTION: Get Buffer length and initializer byte list. This implements |
| 275 | * the late evaluation of these attributes. |
| 276 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 277 | ******************************************************************************/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 279 | acpi_status acpi_ds_get_buffer_arguments(union acpi_operand_object *obj_desc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 281 | struct acpi_namespace_node *node; |
| 282 | acpi_status status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 284 | ACPI_FUNCTION_TRACE_PTR(ds_get_buffer_arguments, obj_desc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | |
| 286 | if (obj_desc->common.flags & AOPOBJ_DATA_VALID) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 287 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | } |
| 289 | |
| 290 | /* Get the Buffer node */ |
| 291 | |
| 292 | node = obj_desc->buffer.node; |
| 293 | if (!node) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 294 | ACPI_ERROR((AE_INFO, |
Bob Moore | f6a22b0 | 2010-03-05 17:56:40 +0800 | [diff] [blame] | 295 | "No pointer back to namespace node in buffer object %p", |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 296 | obj_desc)); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 297 | return_ACPI_STATUS(AE_AML_INTERNAL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | } |
| 299 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 300 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Buffer Arg Init\n")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | |
| 302 | /* Execute the AML code for the term_arg arguments */ |
| 303 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 304 | status = acpi_ds_execute_arguments(node, node, |
| 305 | obj_desc->buffer.aml_length, |
| 306 | obj_desc->buffer.aml_start); |
| 307 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | } |
| 309 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 310 | /******************************************************************************* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 311 | * |
| 312 | * FUNCTION: acpi_ds_get_package_arguments |
| 313 | * |
| 314 | * PARAMETERS: obj_desc - A valid Package object |
| 315 | * |
| 316 | * RETURN: Status. |
| 317 | * |
| 318 | * DESCRIPTION: Get Package length and initializer byte list. This implements |
| 319 | * the late evaluation of these attributes. |
| 320 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 321 | ******************************************************************************/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 323 | acpi_status acpi_ds_get_package_arguments(union acpi_operand_object *obj_desc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 325 | struct acpi_namespace_node *node; |
| 326 | acpi_status status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 328 | ACPI_FUNCTION_TRACE_PTR(ds_get_package_arguments, obj_desc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 329 | |
| 330 | if (obj_desc->common.flags & AOPOBJ_DATA_VALID) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 331 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | } |
| 333 | |
| 334 | /* Get the Package node */ |
| 335 | |
| 336 | node = obj_desc->package.node; |
| 337 | if (!node) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 338 | ACPI_ERROR((AE_INFO, |
Bob Moore | f6a22b0 | 2010-03-05 17:56:40 +0800 | [diff] [blame] | 339 | "No pointer back to namespace node in package %p", |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 340 | obj_desc)); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 341 | return_ACPI_STATUS(AE_AML_INTERNAL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | } |
| 343 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 344 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Package Arg Init\n")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 345 | |
| 346 | /* Execute the AML code for the term_arg arguments */ |
| 347 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 348 | status = acpi_ds_execute_arguments(node, node, |
| 349 | obj_desc->package.aml_length, |
| 350 | obj_desc->package.aml_start); |
| 351 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | } |
| 353 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | /***************************************************************************** |
| 355 | * |
| 356 | * FUNCTION: acpi_ds_get_region_arguments |
| 357 | * |
| 358 | * PARAMETERS: obj_desc - A valid region object |
| 359 | * |
| 360 | * RETURN: Status. |
| 361 | * |
| 362 | * DESCRIPTION: Get region address and length. This implements the late |
| 363 | * evaluation of these region attributes. |
| 364 | * |
| 365 | ****************************************************************************/ |
| 366 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 367 | acpi_status acpi_ds_get_region_arguments(union acpi_operand_object *obj_desc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 369 | struct acpi_namespace_node *node; |
| 370 | acpi_status status; |
| 371 | union acpi_operand_object *extra_desc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 373 | ACPI_FUNCTION_TRACE_PTR(ds_get_region_arguments, obj_desc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | |
| 375 | if (obj_desc->region.flags & AOPOBJ_DATA_VALID) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 376 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | } |
| 378 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 379 | extra_desc = acpi_ns_get_secondary_object(obj_desc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 380 | if (!extra_desc) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 381 | return_ACPI_STATUS(AE_NOT_EXIST); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | } |
| 383 | |
| 384 | /* Get the Region node */ |
| 385 | |
| 386 | node = obj_desc->region.node; |
| 387 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 388 | ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname |
| 389 | (ACPI_TYPE_REGION, node, NULL)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 391 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "[%4.4s] OpRegion Arg Init at AML %p\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 392 | acpi_ut_get_node_name(node), |
| 393 | extra_desc->extra.aml_start)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 394 | |
| 395 | /* Execute the argument AML */ |
| 396 | |
Alexey Starikovskiy | c45b5c0 | 2010-05-26 11:53:07 +0800 | [diff] [blame] | 397 | status = acpi_ds_execute_arguments(node, node->parent, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 398 | extra_desc->extra.aml_length, |
| 399 | extra_desc->extra.aml_start); |
Len Brown | 7cb7f45 | 2009-07-27 18:42:38 -0400 | [diff] [blame] | 400 | if (ACPI_FAILURE(status)) { |
| 401 | return_ACPI_STATUS(status); |
| 402 | } |
| 403 | |
| 404 | /* Validate the region address/length via the host OS */ |
| 405 | |
| 406 | status = acpi_os_validate_address(obj_desc->region.space_id, |
| 407 | obj_desc->region.address, |
| 408 | (acpi_size) obj_desc->region.length, |
| 409 | acpi_ut_get_node_name(node)); |
| 410 | |
| 411 | if (ACPI_FAILURE(status)) { |
| 412 | /* |
| 413 | * Invalid address/length. We will emit an error message and mark |
| 414 | * the region as invalid, so that it will cause an additional error if |
| 415 | * it is ever used. Then return AE_OK. |
| 416 | */ |
| 417 | ACPI_EXCEPTION((AE_INFO, status, |
| 418 | "During address validation of OpRegion [%4.4s]", |
| 419 | node->name.ascii)); |
| 420 | obj_desc->common.flags |= AOPOBJ_INVALID; |
| 421 | status = AE_OK; |
| 422 | } |
| 423 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 424 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | } |
| 426 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 427 | /******************************************************************************* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | * |
| 429 | * FUNCTION: acpi_ds_initialize_region |
| 430 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 431 | * PARAMETERS: obj_handle - Region namespace node |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 432 | * |
| 433 | * RETURN: Status |
| 434 | * |
| 435 | * DESCRIPTION: Front end to ev_initialize_region |
| 436 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 437 | ******************************************************************************/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 439 | acpi_status acpi_ds_initialize_region(acpi_handle obj_handle) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 440 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 441 | union acpi_operand_object *obj_desc; |
| 442 | acpi_status status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 444 | obj_desc = acpi_ns_get_attached_object(obj_handle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | |
| 446 | /* Namespace is NOT locked */ |
| 447 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 448 | status = acpi_ev_initialize_region(obj_desc, FALSE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | return (status); |
| 450 | } |
| 451 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 452 | /******************************************************************************* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | * |
| 454 | * FUNCTION: acpi_ds_init_buffer_field |
| 455 | * |
| 456 | * PARAMETERS: aml_opcode - create_xxx_field |
| 457 | * obj_desc - buffer_field object |
| 458 | * buffer_desc - Host Buffer |
| 459 | * offset_desc - Offset into buffer |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 460 | * length_desc - Length of field (CREATE_FIELD_OP only) |
| 461 | * result_desc - Where to store the result |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | * |
| 463 | * RETURN: Status |
| 464 | * |
| 465 | * DESCRIPTION: Perform actual initialization of a buffer field |
| 466 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 467 | ******************************************************************************/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 468 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 469 | static acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 470 | acpi_ds_init_buffer_field(u16 aml_opcode, |
| 471 | union acpi_operand_object *obj_desc, |
| 472 | union acpi_operand_object *buffer_desc, |
| 473 | union acpi_operand_object *offset_desc, |
| 474 | union acpi_operand_object *length_desc, |
| 475 | union acpi_operand_object *result_desc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 477 | u32 offset; |
| 478 | u32 bit_offset; |
| 479 | u32 bit_count; |
| 480 | u8 field_flags; |
| 481 | acpi_status status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 482 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 483 | ACPI_FUNCTION_TRACE_PTR(ds_init_buffer_field, obj_desc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 484 | |
| 485 | /* Host object must be a Buffer */ |
| 486 | |
Bob Moore | 3371c19 | 2009-02-18 14:44:03 +0800 | [diff] [blame] | 487 | if (buffer_desc->common.type != ACPI_TYPE_BUFFER) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 488 | ACPI_ERROR((AE_INFO, |
| 489 | "Target of Create Field is not a Buffer object - %s", |
| 490 | acpi_ut_get_object_type_name(buffer_desc))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | |
| 492 | status = AE_AML_OPERAND_TYPE; |
| 493 | goto cleanup; |
| 494 | } |
| 495 | |
| 496 | /* |
| 497 | * The last parameter to all of these opcodes (result_desc) started |
| 498 | * out as a name_string, and should therefore now be a NS node |
| 499 | * after resolution in acpi_ex_resolve_operands(). |
| 500 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 501 | if (ACPI_GET_DESCRIPTOR_TYPE(result_desc) != ACPI_DESC_TYPE_NAMED) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 502 | ACPI_ERROR((AE_INFO, |
| 503 | "(%s) destination not a NS Node [%s]", |
| 504 | acpi_ps_get_opcode_name(aml_opcode), |
| 505 | acpi_ut_get_descriptor_name(result_desc))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | |
| 507 | status = AE_AML_OPERAND_TYPE; |
| 508 | goto cleanup; |
| 509 | } |
| 510 | |
| 511 | offset = (u32) offset_desc->integer.value; |
| 512 | |
| 513 | /* |
| 514 | * Setup the Bit offsets and counts, according to the opcode |
| 515 | */ |
| 516 | switch (aml_opcode) { |
| 517 | case AML_CREATE_FIELD_OP: |
| 518 | |
| 519 | /* Offset is in bits, count is in bits */ |
| 520 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 521 | field_flags = AML_FIELD_ACCESS_BYTE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 522 | bit_offset = offset; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 523 | bit_count = (u32) length_desc->integer.value; |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 524 | |
| 525 | /* Must have a valid (>0) bit count */ |
| 526 | |
| 527 | if (bit_count == 0) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 528 | ACPI_ERROR((AE_INFO, |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 529 | "Attempt to CreateField of length zero")); |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 530 | status = AE_AML_OPERAND_VALUE; |
| 531 | goto cleanup; |
| 532 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | break; |
| 534 | |
| 535 | case AML_CREATE_BIT_FIELD_OP: |
| 536 | |
| 537 | /* Offset is in bits, Field is one bit */ |
| 538 | |
| 539 | bit_offset = offset; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 540 | bit_count = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | field_flags = AML_FIELD_ACCESS_BYTE; |
| 542 | break; |
| 543 | |
| 544 | case AML_CREATE_BYTE_FIELD_OP: |
| 545 | |
| 546 | /* Offset is in bytes, field is one byte */ |
| 547 | |
| 548 | bit_offset = 8 * offset; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 549 | bit_count = 8; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 550 | field_flags = AML_FIELD_ACCESS_BYTE; |
| 551 | break; |
| 552 | |
| 553 | case AML_CREATE_WORD_FIELD_OP: |
| 554 | |
| 555 | /* Offset is in bytes, field is one word */ |
| 556 | |
| 557 | bit_offset = 8 * offset; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 558 | bit_count = 16; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | field_flags = AML_FIELD_ACCESS_WORD; |
| 560 | break; |
| 561 | |
| 562 | case AML_CREATE_DWORD_FIELD_OP: |
| 563 | |
| 564 | /* Offset is in bytes, field is one dword */ |
| 565 | |
| 566 | bit_offset = 8 * offset; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 567 | bit_count = 32; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 568 | field_flags = AML_FIELD_ACCESS_DWORD; |
| 569 | break; |
| 570 | |
| 571 | case AML_CREATE_QWORD_FIELD_OP: |
| 572 | |
| 573 | /* Offset is in bytes, field is one qword */ |
| 574 | |
| 575 | bit_offset = 8 * offset; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 576 | bit_count = 64; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 577 | field_flags = AML_FIELD_ACCESS_QWORD; |
| 578 | break; |
| 579 | |
| 580 | default: |
| 581 | |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 582 | ACPI_ERROR((AE_INFO, |
Bob Moore | f6a22b0 | 2010-03-05 17:56:40 +0800 | [diff] [blame] | 583 | "Unknown field creation opcode 0x%02X", |
| 584 | aml_opcode)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 585 | status = AE_AML_BAD_OPCODE; |
| 586 | goto cleanup; |
| 587 | } |
| 588 | |
| 589 | /* Entire field must fit within the current length of the buffer */ |
| 590 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 591 | if ((bit_offset + bit_count) > (8 * (u32) buffer_desc->buffer.length)) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 592 | ACPI_ERROR((AE_INFO, |
Bob Moore | f6a22b0 | 2010-03-05 17:56:40 +0800 | [diff] [blame] | 593 | "Field [%4.4s] at %u exceeds Buffer [%4.4s] size %u (bits)", |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 594 | acpi_ut_get_node_name(result_desc), |
| 595 | bit_offset + bit_count, |
| 596 | acpi_ut_get_node_name(buffer_desc->buffer.node), |
| 597 | 8 * (u32) buffer_desc->buffer.length)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 598 | status = AE_AML_BUFFER_LIMIT; |
| 599 | goto cleanup; |
| 600 | } |
| 601 | |
| 602 | /* |
| 603 | * Initialize areas of the field object that are common to all fields |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 604 | * For field_flags, use LOCK_RULE = 0 (NO_LOCK), |
| 605 | * UPDATE_RULE = 0 (UPDATE_PRESERVE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 606 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 607 | status = acpi_ex_prep_common_field_object(obj_desc, field_flags, 0, |
| 608 | bit_offset, bit_count); |
| 609 | if (ACPI_FAILURE(status)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 610 | goto cleanup; |
| 611 | } |
| 612 | |
| 613 | obj_desc->buffer_field.buffer_obj = buffer_desc; |
| 614 | |
| 615 | /* Reference count for buffer_desc inherits obj_desc count */ |
| 616 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 617 | buffer_desc->common.reference_count = (u16) |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 618 | (buffer_desc->common.reference_count + |
| 619 | obj_desc->common.reference_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 621 | cleanup: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | |
| 623 | /* Always delete the operands */ |
| 624 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 625 | acpi_ut_remove_reference(offset_desc); |
| 626 | acpi_ut_remove_reference(buffer_desc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 627 | |
| 628 | if (aml_opcode == AML_CREATE_FIELD_OP) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 629 | acpi_ut_remove_reference(length_desc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 630 | } |
| 631 | |
| 632 | /* On failure, delete the result descriptor */ |
| 633 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 634 | if (ACPI_FAILURE(status)) { |
| 635 | acpi_ut_remove_reference(result_desc); /* Result descriptor */ |
| 636 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 637 | /* Now the address and length are valid for this buffer_field */ |
| 638 | |
| 639 | obj_desc->buffer_field.flags |= AOPOBJ_DATA_VALID; |
| 640 | } |
| 641 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 642 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 643 | } |
| 644 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 645 | /******************************************************************************* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 646 | * |
| 647 | * FUNCTION: acpi_ds_eval_buffer_field_operands |
| 648 | * |
| 649 | * PARAMETERS: walk_state - Current walk |
| 650 | * Op - A valid buffer_field Op object |
| 651 | * |
| 652 | * RETURN: Status |
| 653 | * |
| 654 | * DESCRIPTION: Get buffer_field Buffer and Index |
| 655 | * Called from acpi_ds_exec_end_op during buffer_field parse tree walk |
| 656 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 657 | ******************************************************************************/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 658 | |
| 659 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 660 | acpi_ds_eval_buffer_field_operands(struct acpi_walk_state *walk_state, |
| 661 | union acpi_parse_object *op) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 662 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 663 | acpi_status status; |
| 664 | union acpi_operand_object *obj_desc; |
| 665 | struct acpi_namespace_node *node; |
| 666 | union acpi_parse_object *next_op; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 668 | ACPI_FUNCTION_TRACE_PTR(ds_eval_buffer_field_operands, op); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 669 | |
| 670 | /* |
| 671 | * This is where we evaluate the address and length fields of the |
| 672 | * create_xxx_field declaration |
| 673 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 674 | node = op->common.node; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 675 | |
| 676 | /* next_op points to the op that holds the Buffer */ |
| 677 | |
| 678 | next_op = op->common.value.arg; |
| 679 | |
| 680 | /* Evaluate/create the address and length operands */ |
| 681 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 682 | status = acpi_ds_create_operands(walk_state, next_op); |
| 683 | if (ACPI_FAILURE(status)) { |
| 684 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 685 | } |
| 686 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 687 | obj_desc = acpi_ns_get_attached_object(node); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 688 | if (!obj_desc) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 689 | return_ACPI_STATUS(AE_NOT_EXIST); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 690 | } |
| 691 | |
| 692 | /* Resolve the operands */ |
| 693 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 694 | status = acpi_ex_resolve_operands(op->common.aml_opcode, |
| 695 | ACPI_WALK_OPERANDS, walk_state); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 696 | if (ACPI_FAILURE(status)) { |
Bob Moore | f6a22b0 | 2010-03-05 17:56:40 +0800 | [diff] [blame] | 697 | ACPI_ERROR((AE_INFO, "(%s) bad operand(s), status 0x%X", |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 698 | acpi_ps_get_opcode_name(op->common.aml_opcode), |
| 699 | status)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 700 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 701 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 702 | } |
| 703 | |
| 704 | /* Initialize the Buffer Field */ |
| 705 | |
| 706 | if (op->common.aml_opcode == AML_CREATE_FIELD_OP) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 707 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 708 | /* NOTE: Slightly different operands for this opcode */ |
| 709 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 710 | status = |
| 711 | acpi_ds_init_buffer_field(op->common.aml_opcode, obj_desc, |
| 712 | walk_state->operands[0], |
| 713 | walk_state->operands[1], |
| 714 | walk_state->operands[2], |
| 715 | walk_state->operands[3]); |
| 716 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 717 | /* All other, create_xxx_field opcodes */ |
| 718 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 719 | status = |
| 720 | acpi_ds_init_buffer_field(op->common.aml_opcode, obj_desc, |
| 721 | walk_state->operands[0], |
| 722 | walk_state->operands[1], NULL, |
| 723 | walk_state->operands[2]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 724 | } |
| 725 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 726 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 727 | } |
| 728 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 729 | /******************************************************************************* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 730 | * |
| 731 | * FUNCTION: acpi_ds_eval_region_operands |
| 732 | * |
| 733 | * PARAMETERS: walk_state - Current walk |
| 734 | * Op - A valid region Op object |
| 735 | * |
| 736 | * RETURN: Status |
| 737 | * |
| 738 | * DESCRIPTION: Get region address and length |
| 739 | * Called from acpi_ds_exec_end_op during op_region parse tree walk |
| 740 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 741 | ******************************************************************************/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 742 | |
| 743 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 744 | acpi_ds_eval_region_operands(struct acpi_walk_state *walk_state, |
| 745 | union acpi_parse_object *op) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 746 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 747 | acpi_status status; |
| 748 | union acpi_operand_object *obj_desc; |
| 749 | union acpi_operand_object *operand_desc; |
| 750 | struct acpi_namespace_node *node; |
| 751 | union acpi_parse_object *next_op; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 753 | ACPI_FUNCTION_TRACE_PTR(ds_eval_region_operands, op); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 754 | |
| 755 | /* |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 756 | * This is where we evaluate the address and length fields of the |
| 757 | * op_region declaration |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 758 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 759 | node = op->common.node; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 760 | |
| 761 | /* next_op points to the op that holds the space_iD */ |
| 762 | |
| 763 | next_op = op->common.value.arg; |
| 764 | |
| 765 | /* next_op points to address op */ |
| 766 | |
| 767 | next_op = next_op->common.next; |
| 768 | |
| 769 | /* Evaluate/create the address and length operands */ |
| 770 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 771 | status = acpi_ds_create_operands(walk_state, next_op); |
| 772 | if (ACPI_FAILURE(status)) { |
| 773 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 774 | } |
| 775 | |
| 776 | /* Resolve the length and address operands to numbers */ |
| 777 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 778 | status = acpi_ex_resolve_operands(op->common.aml_opcode, |
| 779 | ACPI_WALK_OPERANDS, walk_state); |
| 780 | if (ACPI_FAILURE(status)) { |
| 781 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 782 | } |
| 783 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 784 | obj_desc = acpi_ns_get_attached_object(node); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 785 | if (!obj_desc) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 786 | return_ACPI_STATUS(AE_NOT_EXIST); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 787 | } |
| 788 | |
| 789 | /* |
| 790 | * Get the length operand and save it |
| 791 | * (at Top of stack) |
| 792 | */ |
| 793 | operand_desc = walk_state->operands[walk_state->num_operands - 1]; |
| 794 | |
| 795 | obj_desc->region.length = (u32) operand_desc->integer.value; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 796 | acpi_ut_remove_reference(operand_desc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 797 | |
| 798 | /* |
| 799 | * Get the address and save it |
| 800 | * (at top of stack - 1) |
| 801 | */ |
| 802 | operand_desc = walk_state->operands[walk_state->num_operands - 2]; |
| 803 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 804 | obj_desc->region.address = (acpi_physical_address) |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 805 | operand_desc->integer.value; |
| 806 | acpi_ut_remove_reference(operand_desc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 807 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 808 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "RgnObj %p Addr %8.8X%8.8X Len %X\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 809 | obj_desc, |
Bob Moore | b7f9f04 | 2008-04-10 19:06:40 +0400 | [diff] [blame] | 810 | ACPI_FORMAT_NATIVE_UINT(obj_desc->region.address), |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 811 | obj_desc->region.length)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 812 | |
| 813 | /* Now the address and length are valid for this opregion */ |
| 814 | |
| 815 | obj_desc->region.flags |= AOPOBJ_DATA_VALID; |
| 816 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 817 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 818 | } |
| 819 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 820 | /******************************************************************************* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 821 | * |
Lin Ming | 941f48b | 2008-04-10 19:06:41 +0400 | [diff] [blame] | 822 | * FUNCTION: acpi_ds_eval_table_region_operands |
| 823 | * |
| 824 | * PARAMETERS: walk_state - Current walk |
| 825 | * Op - A valid region Op object |
| 826 | * |
| 827 | * RETURN: Status |
| 828 | * |
| 829 | * DESCRIPTION: Get region address and length |
| 830 | * Called from acpi_ds_exec_end_op during data_table_region parse tree walk |
| 831 | * |
| 832 | ******************************************************************************/ |
| 833 | |
| 834 | acpi_status |
| 835 | acpi_ds_eval_table_region_operands(struct acpi_walk_state *walk_state, |
| 836 | union acpi_parse_object *op) |
| 837 | { |
| 838 | acpi_status status; |
| 839 | union acpi_operand_object *obj_desc; |
| 840 | union acpi_operand_object **operand; |
| 841 | struct acpi_namespace_node *node; |
| 842 | union acpi_parse_object *next_op; |
Bob Moore | 67a119f | 2008-06-10 13:42:13 +0800 | [diff] [blame] | 843 | u32 table_index; |
Lin Ming | 941f48b | 2008-04-10 19:06:41 +0400 | [diff] [blame] | 844 | struct acpi_table_header *table; |
| 845 | |
| 846 | ACPI_FUNCTION_TRACE_PTR(ds_eval_table_region_operands, op); |
| 847 | |
| 848 | /* |
| 849 | * This is where we evaluate the signature_string and oem_iDString |
| 850 | * and oem_table_iDString of the data_table_region declaration |
| 851 | */ |
| 852 | node = op->common.node; |
| 853 | |
| 854 | /* next_op points to signature_string op */ |
| 855 | |
| 856 | next_op = op->common.value.arg; |
| 857 | |
| 858 | /* |
| 859 | * Evaluate/create the signature_string and oem_iDString |
| 860 | * and oem_table_iDString operands |
| 861 | */ |
| 862 | status = acpi_ds_create_operands(walk_state, next_op); |
| 863 | if (ACPI_FAILURE(status)) { |
| 864 | return_ACPI_STATUS(status); |
| 865 | } |
| 866 | |
| 867 | /* |
| 868 | * Resolve the signature_string and oem_iDString |
| 869 | * and oem_table_iDString operands |
| 870 | */ |
| 871 | status = acpi_ex_resolve_operands(op->common.aml_opcode, |
| 872 | ACPI_WALK_OPERANDS, walk_state); |
| 873 | if (ACPI_FAILURE(status)) { |
| 874 | return_ACPI_STATUS(status); |
| 875 | } |
| 876 | |
Lin Ming | 941f48b | 2008-04-10 19:06:41 +0400 | [diff] [blame] | 877 | operand = &walk_state->operands[0]; |
| 878 | |
| 879 | /* Find the ACPI table */ |
| 880 | |
| 881 | status = acpi_tb_find_table(operand[0]->string.pointer, |
| 882 | operand[1]->string.pointer, |
| 883 | operand[2]->string.pointer, &table_index); |
| 884 | if (ACPI_FAILURE(status)) { |
| 885 | return_ACPI_STATUS(status); |
| 886 | } |
| 887 | |
| 888 | acpi_ut_remove_reference(operand[0]); |
| 889 | acpi_ut_remove_reference(operand[1]); |
| 890 | acpi_ut_remove_reference(operand[2]); |
| 891 | |
| 892 | status = acpi_get_table_by_index(table_index, &table); |
| 893 | if (ACPI_FAILURE(status)) { |
| 894 | return_ACPI_STATUS(status); |
| 895 | } |
| 896 | |
| 897 | obj_desc = acpi_ns_get_attached_object(node); |
| 898 | if (!obj_desc) { |
| 899 | return_ACPI_STATUS(AE_NOT_EXIST); |
| 900 | } |
| 901 | |
| 902 | obj_desc->region.address = |
| 903 | (acpi_physical_address) ACPI_TO_INTEGER(table); |
| 904 | obj_desc->region.length = table->length; |
| 905 | |
| 906 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "RgnObj %p Addr %8.8X%8.8X Len %X\n", |
| 907 | obj_desc, |
| 908 | ACPI_FORMAT_NATIVE_UINT(obj_desc->region.address), |
| 909 | obj_desc->region.length)); |
| 910 | |
| 911 | /* Now the address and length are valid for this opregion */ |
| 912 | |
| 913 | obj_desc->region.flags |= AOPOBJ_DATA_VALID; |
| 914 | |
| 915 | return_ACPI_STATUS(status); |
| 916 | } |
| 917 | |
| 918 | /******************************************************************************* |
| 919 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 920 | * FUNCTION: acpi_ds_eval_data_object_operands |
| 921 | * |
| 922 | * PARAMETERS: walk_state - Current walk |
| 923 | * Op - A valid data_object Op object |
| 924 | * obj_desc - data_object |
| 925 | * |
| 926 | * RETURN: Status |
| 927 | * |
| 928 | * DESCRIPTION: Get the operands and complete the following data object types: |
| 929 | * Buffer, Package. |
| 930 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 931 | ******************************************************************************/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 932 | |
| 933 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 934 | acpi_ds_eval_data_object_operands(struct acpi_walk_state *walk_state, |
| 935 | union acpi_parse_object *op, |
| 936 | union acpi_operand_object *obj_desc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 937 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 938 | acpi_status status; |
| 939 | union acpi_operand_object *arg_desc; |
| 940 | u32 length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 941 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 942 | ACPI_FUNCTION_TRACE(ds_eval_data_object_operands); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 943 | |
| 944 | /* The first operand (for all of these data objects) is the length */ |
| 945 | |
Bob Moore | 773069d | 2008-04-10 19:06:36 +0400 | [diff] [blame] | 946 | /* |
| 947 | * Set proper index into operand stack for acpi_ds_obj_stack_push |
| 948 | * invoked inside acpi_ds_create_operand. |
| 949 | */ |
| 950 | walk_state->operand_index = walk_state->num_operands; |
| 951 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 952 | status = acpi_ds_create_operand(walk_state, op->common.value.arg, 1); |
| 953 | if (ACPI_FAILURE(status)) { |
| 954 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 955 | } |
| 956 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 957 | status = acpi_ex_resolve_operands(walk_state->opcode, |
| 958 | &(walk_state-> |
| 959 | operands[walk_state->num_operands - |
| 960 | 1]), walk_state); |
| 961 | if (ACPI_FAILURE(status)) { |
| 962 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 963 | } |
| 964 | |
| 965 | /* Extract length operand */ |
| 966 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 967 | arg_desc = walk_state->operands[walk_state->num_operands - 1]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 968 | length = (u32) arg_desc->integer.value; |
| 969 | |
| 970 | /* Cleanup for length operand */ |
| 971 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 972 | status = acpi_ds_obj_stack_pop(1, walk_state); |
| 973 | if (ACPI_FAILURE(status)) { |
| 974 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 975 | } |
| 976 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 977 | acpi_ut_remove_reference(arg_desc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 978 | |
| 979 | /* |
| 980 | * Create the actual data object |
| 981 | */ |
| 982 | switch (op->common.aml_opcode) { |
| 983 | case AML_BUFFER_OP: |
| 984 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 985 | status = |
| 986 | acpi_ds_build_internal_buffer_obj(walk_state, op, length, |
| 987 | &obj_desc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 988 | break; |
| 989 | |
| 990 | case AML_PACKAGE_OP: |
| 991 | case AML_VAR_PACKAGE_OP: |
| 992 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 993 | status = |
| 994 | acpi_ds_build_internal_package_obj(walk_state, op, length, |
| 995 | &obj_desc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 996 | break; |
| 997 | |
| 998 | default: |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 999 | return_ACPI_STATUS(AE_AML_BAD_OPCODE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1000 | } |
| 1001 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1002 | if (ACPI_SUCCESS(status)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1003 | /* |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 1004 | * Return the object in the walk_state, unless the parent is a package - |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1005 | * in this case, the return object will be stored in the parse tree |
| 1006 | * for the package. |
| 1007 | */ |
| 1008 | if ((!op->common.parent) || |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1009 | ((op->common.parent->common.aml_opcode != AML_PACKAGE_OP) && |
| 1010 | (op->common.parent->common.aml_opcode != |
| 1011 | AML_VAR_PACKAGE_OP) |
Len Brown | fd35094 | 2007-05-09 23:34:35 -0400 | [diff] [blame] | 1012 | && (op->common.parent->common.aml_opcode != AML_NAME_OP))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1013 | walk_state->result_obj = obj_desc; |
| 1014 | } |
| 1015 | } |
| 1016 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1017 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1018 | } |
| 1019 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1020 | /******************************************************************************* |
| 1021 | * |
Lin Ming | ef805d9 | 2008-04-10 19:06:41 +0400 | [diff] [blame] | 1022 | * FUNCTION: acpi_ds_eval_bank_field_operands |
| 1023 | * |
| 1024 | * PARAMETERS: walk_state - Current walk |
| 1025 | * Op - A valid bank_field Op object |
| 1026 | * |
| 1027 | * RETURN: Status |
| 1028 | * |
| 1029 | * DESCRIPTION: Get bank_field bank_value |
| 1030 | * Called from acpi_ds_exec_end_op during bank_field parse tree walk |
| 1031 | * |
| 1032 | ******************************************************************************/ |
| 1033 | |
| 1034 | acpi_status |
| 1035 | acpi_ds_eval_bank_field_operands(struct acpi_walk_state *walk_state, |
| 1036 | union acpi_parse_object *op) |
| 1037 | { |
| 1038 | acpi_status status; |
| 1039 | union acpi_operand_object *obj_desc; |
| 1040 | union acpi_operand_object *operand_desc; |
| 1041 | struct acpi_namespace_node *node; |
| 1042 | union acpi_parse_object *next_op; |
| 1043 | union acpi_parse_object *arg; |
| 1044 | |
| 1045 | ACPI_FUNCTION_TRACE_PTR(ds_eval_bank_field_operands, op); |
| 1046 | |
| 1047 | /* |
| 1048 | * This is where we evaluate the bank_value field of the |
| 1049 | * bank_field declaration |
| 1050 | */ |
| 1051 | |
| 1052 | /* next_op points to the op that holds the Region */ |
| 1053 | |
| 1054 | next_op = op->common.value.arg; |
| 1055 | |
| 1056 | /* next_op points to the op that holds the Bank Register */ |
| 1057 | |
| 1058 | next_op = next_op->common.next; |
| 1059 | |
| 1060 | /* next_op points to the op that holds the Bank Value */ |
| 1061 | |
| 1062 | next_op = next_op->common.next; |
| 1063 | |
| 1064 | /* |
| 1065 | * Set proper index into operand stack for acpi_ds_obj_stack_push |
| 1066 | * invoked inside acpi_ds_create_operand. |
| 1067 | * |
| 1068 | * We use walk_state->Operands[0] to store the evaluated bank_value |
| 1069 | */ |
| 1070 | walk_state->operand_index = 0; |
| 1071 | |
| 1072 | status = acpi_ds_create_operand(walk_state, next_op, 0); |
| 1073 | if (ACPI_FAILURE(status)) { |
| 1074 | return_ACPI_STATUS(status); |
| 1075 | } |
| 1076 | |
| 1077 | status = acpi_ex_resolve_to_value(&walk_state->operands[0], walk_state); |
| 1078 | if (ACPI_FAILURE(status)) { |
| 1079 | return_ACPI_STATUS(status); |
| 1080 | } |
| 1081 | |
Bob Moore | 71d993e | 2008-06-10 14:25:05 +0800 | [diff] [blame] | 1082 | ACPI_DUMP_OPERANDS(ACPI_WALK_OPERANDS, |
| 1083 | acpi_ps_get_opcode_name(op->common.aml_opcode), 1); |
Lin Ming | ef805d9 | 2008-04-10 19:06:41 +0400 | [diff] [blame] | 1084 | /* |
| 1085 | * Get the bank_value operand and save it |
| 1086 | * (at Top of stack) |
| 1087 | */ |
| 1088 | operand_desc = walk_state->operands[0]; |
| 1089 | |
| 1090 | /* Arg points to the start Bank Field */ |
| 1091 | |
| 1092 | arg = acpi_ps_get_arg(op, 4); |
| 1093 | while (arg) { |
| 1094 | |
| 1095 | /* Ignore OFFSET and ACCESSAS terms here */ |
| 1096 | |
| 1097 | if (arg->common.aml_opcode == AML_INT_NAMEDFIELD_OP) { |
| 1098 | node = arg->common.node; |
| 1099 | |
| 1100 | obj_desc = acpi_ns_get_attached_object(node); |
| 1101 | if (!obj_desc) { |
| 1102 | return_ACPI_STATUS(AE_NOT_EXIST); |
| 1103 | } |
| 1104 | |
| 1105 | obj_desc->bank_field.value = |
| 1106 | (u32) operand_desc->integer.value; |
| 1107 | } |
| 1108 | |
| 1109 | /* Move to next field in the list */ |
| 1110 | |
| 1111 | arg = arg->common.next; |
| 1112 | } |
| 1113 | |
| 1114 | acpi_ut_remove_reference(operand_desc); |
| 1115 | return_ACPI_STATUS(status); |
| 1116 | } |
| 1117 | |
| 1118 | /******************************************************************************* |
| 1119 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1120 | * FUNCTION: acpi_ds_exec_begin_control_op |
| 1121 | * |
| 1122 | * PARAMETERS: walk_list - The list that owns the walk stack |
| 1123 | * Op - The control Op |
| 1124 | * |
| 1125 | * RETURN: Status |
| 1126 | * |
| 1127 | * DESCRIPTION: Handles all control ops encountered during control method |
| 1128 | * execution. |
| 1129 | * |
| 1130 | ******************************************************************************/ |
| 1131 | |
| 1132 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1133 | acpi_ds_exec_begin_control_op(struct acpi_walk_state *walk_state, |
| 1134 | union acpi_parse_object *op) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1135 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1136 | acpi_status status = AE_OK; |
| 1137 | union acpi_generic_state *control_state; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1138 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 1139 | ACPI_FUNCTION_NAME(ds_exec_begin_control_op); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1140 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1141 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p Opcode=%2.2X State=%p\n", op, |
| 1142 | op->common.aml_opcode, walk_state)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1143 | |
| 1144 | switch (op->common.aml_opcode) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1145 | case AML_WHILE_OP: |
| 1146 | |
| 1147 | /* |
Bob Moore | 96411a6 | 2008-11-12 15:02:00 +0800 | [diff] [blame] | 1148 | * If this is an additional iteration of a while loop, continue. |
| 1149 | * There is no need to allocate a new control state. |
| 1150 | */ |
| 1151 | if (walk_state->control_state) { |
| 1152 | if (walk_state->control_state->control.aml_predicate_start |
| 1153 | == (walk_state->parser_state.aml - 1)) { |
| 1154 | |
| 1155 | /* Reset the state to start-of-loop */ |
| 1156 | |
| 1157 | walk_state->control_state->common.state = |
| 1158 | ACPI_CONTROL_CONDITIONAL_EXECUTING; |
| 1159 | break; |
| 1160 | } |
| 1161 | } |
| 1162 | |
| 1163 | /*lint -fallthrough */ |
| 1164 | |
| 1165 | case AML_IF_OP: |
| 1166 | |
| 1167 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1168 | * IF/WHILE: Create a new control state to manage these |
| 1169 | * constructs. We need to manage these as a stack, in order |
| 1170 | * to handle nesting. |
| 1171 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1172 | control_state = acpi_ut_create_control_state(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1173 | if (!control_state) { |
| 1174 | status = AE_NO_MEMORY; |
| 1175 | break; |
| 1176 | } |
| 1177 | /* |
| 1178 | * Save a pointer to the predicate for multiple executions |
| 1179 | * of a loop |
| 1180 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1181 | control_state->control.aml_predicate_start = |
| 1182 | walk_state->parser_state.aml - 1; |
| 1183 | control_state->control.package_end = |
| 1184 | walk_state->parser_state.pkg_end; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1185 | control_state->control.opcode = op->common.aml_opcode; |
| 1186 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1187 | /* Push the control state on this walk's control stack */ |
| 1188 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1189 | acpi_ut_push_generic_state(&walk_state->control_state, |
| 1190 | control_state); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1191 | break; |
| 1192 | |
| 1193 | case AML_ELSE_OP: |
| 1194 | |
| 1195 | /* Predicate is in the state object */ |
| 1196 | /* If predicate is true, the IF was executed, ignore ELSE part */ |
| 1197 | |
| 1198 | if (walk_state->last_predicate) { |
| 1199 | status = AE_CTRL_TRUE; |
| 1200 | } |
| 1201 | |
| 1202 | break; |
| 1203 | |
| 1204 | case AML_RETURN_OP: |
| 1205 | |
| 1206 | break; |
| 1207 | |
| 1208 | default: |
| 1209 | break; |
| 1210 | } |
| 1211 | |
| 1212 | return (status); |
| 1213 | } |
| 1214 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1215 | /******************************************************************************* |
| 1216 | * |
| 1217 | * FUNCTION: acpi_ds_exec_end_control_op |
| 1218 | * |
| 1219 | * PARAMETERS: walk_list - The list that owns the walk stack |
| 1220 | * Op - The control Op |
| 1221 | * |
| 1222 | * RETURN: Status |
| 1223 | * |
| 1224 | * DESCRIPTION: Handles all control ops encountered during control method |
| 1225 | * execution. |
| 1226 | * |
| 1227 | ******************************************************************************/ |
| 1228 | |
| 1229 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1230 | acpi_ds_exec_end_control_op(struct acpi_walk_state * walk_state, |
| 1231 | union acpi_parse_object * op) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1232 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1233 | acpi_status status = AE_OK; |
| 1234 | union acpi_generic_state *control_state; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1235 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 1236 | ACPI_FUNCTION_NAME(ds_exec_end_control_op); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1237 | |
| 1238 | switch (op->common.aml_opcode) { |
| 1239 | case AML_IF_OP: |
| 1240 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1241 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "[IF_OP] Op=%p\n", op)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1242 | |
| 1243 | /* |
| 1244 | * Save the result of the predicate in case there is an |
| 1245 | * ELSE to come |
| 1246 | */ |
| 1247 | walk_state->last_predicate = |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1248 | (u8) walk_state->control_state->common.value; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1249 | |
| 1250 | /* |
| 1251 | * Pop the control state that was created at the start |
| 1252 | * of the IF and free it |
| 1253 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1254 | control_state = |
| 1255 | acpi_ut_pop_generic_state(&walk_state->control_state); |
| 1256 | acpi_ut_delete_generic_state(control_state); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1257 | break; |
| 1258 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1259 | case AML_ELSE_OP: |
| 1260 | |
| 1261 | break; |
| 1262 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1263 | case AML_WHILE_OP: |
| 1264 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1265 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "[WHILE_OP] Op=%p\n", op)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1266 | |
Bob Moore | fc37445 | 2008-11-12 15:15:29 +0800 | [diff] [blame] | 1267 | control_state = walk_state->control_state; |
| 1268 | if (control_state->common.value) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 1269 | |
Bob Moore | fc37445 | 2008-11-12 15:15:29 +0800 | [diff] [blame] | 1270 | /* Predicate was true, the body of the loop was just executed */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1271 | |
Bob Moore | fc37445 | 2008-11-12 15:15:29 +0800 | [diff] [blame] | 1272 | /* |
| 1273 | * This loop counter mechanism allows the interpreter to escape |
| 1274 | * possibly infinite loops. This can occur in poorly written AML |
| 1275 | * when the hardware does not respond within a while loop and the |
| 1276 | * loop does not implement a timeout. |
| 1277 | */ |
| 1278 | control_state->control.loop_count++; |
| 1279 | if (control_state->control.loop_count > |
| 1280 | ACPI_MAX_LOOP_ITERATIONS) { |
| 1281 | status = AE_AML_INFINITE_LOOP; |
| 1282 | break; |
| 1283 | } |
| 1284 | |
| 1285 | /* |
| 1286 | * Go back and evaluate the predicate and maybe execute the loop |
| 1287 | * another time |
| 1288 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1289 | status = AE_CTRL_PENDING; |
Bob Moore | 96411a6 | 2008-11-12 15:02:00 +0800 | [diff] [blame] | 1290 | walk_state->aml_last_while = |
Bob Moore | fc37445 | 2008-11-12 15:15:29 +0800 | [diff] [blame] | 1291 | control_state->control.aml_predicate_start; |
Bob Moore | 96411a6 | 2008-11-12 15:02:00 +0800 | [diff] [blame] | 1292 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1293 | } |
| 1294 | |
Bob Moore | 96411a6 | 2008-11-12 15:02:00 +0800 | [diff] [blame] | 1295 | /* Predicate was false, terminate this while loop */ |
| 1296 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1297 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
| 1298 | "[WHILE_OP] termination! Op=%p\n", op)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1299 | |
| 1300 | /* Pop this control state and free it */ |
| 1301 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1302 | control_state = |
| 1303 | acpi_ut_pop_generic_state(&walk_state->control_state); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1304 | acpi_ut_delete_generic_state(control_state); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1305 | break; |
| 1306 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1307 | case AML_RETURN_OP: |
| 1308 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1309 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
| 1310 | "[RETURN_OP] Op=%p Arg=%p\n", op, |
| 1311 | op->common.value.arg)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1312 | |
| 1313 | /* |
| 1314 | * One optional operand -- the return value |
| 1315 | * It can be either an immediate operand or a result that |
| 1316 | * has been bubbled up the tree |
| 1317 | */ |
| 1318 | if (op->common.value.arg) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 1319 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1320 | /* Since we have a real Return(), delete any implicit return */ |
| 1321 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1322 | acpi_ds_clear_implicit_return(walk_state); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1323 | |
| 1324 | /* Return statement has an immediate operand */ |
| 1325 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1326 | status = |
| 1327 | acpi_ds_create_operands(walk_state, |
| 1328 | op->common.value.arg); |
| 1329 | if (ACPI_FAILURE(status)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1330 | return (status); |
| 1331 | } |
| 1332 | |
| 1333 | /* |
| 1334 | * If value being returned is a Reference (such as |
| 1335 | * an arg or local), resolve it now because it may |
| 1336 | * cease to exist at the end of the method. |
| 1337 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1338 | status = |
| 1339 | acpi_ex_resolve_to_value(&walk_state->operands[0], |
| 1340 | walk_state); |
| 1341 | if (ACPI_FAILURE(status)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1342 | return (status); |
| 1343 | } |
| 1344 | |
| 1345 | /* |
| 1346 | * Get the return value and save as the last result |
| 1347 | * value. This is the only place where walk_state->return_desc |
| 1348 | * is set to anything other than zero! |
| 1349 | */ |
| 1350 | walk_state->return_desc = walk_state->operands[0]; |
Bob Moore | 773069d | 2008-04-10 19:06:36 +0400 | [diff] [blame] | 1351 | } else if (walk_state->result_count) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 1352 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1353 | /* Since we have a real Return(), delete any implicit return */ |
| 1354 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1355 | acpi_ds_clear_implicit_return(walk_state); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1356 | |
| 1357 | /* |
| 1358 | * The return value has come from a previous calculation. |
| 1359 | * |
| 1360 | * If value being returned is a Reference (such as |
| 1361 | * an arg or local), resolve it now because it may |
| 1362 | * cease to exist at the end of the method. |
| 1363 | * |
| 1364 | * Allow references created by the Index operator to return unchanged. |
| 1365 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1366 | if ((ACPI_GET_DESCRIPTOR_TYPE |
| 1367 | (walk_state->results->results.obj_desc[0]) == |
| 1368 | ACPI_DESC_TYPE_OPERAND) |
Bob Moore | 3371c19 | 2009-02-18 14:44:03 +0800 | [diff] [blame] | 1369 | && ((walk_state->results->results.obj_desc[0])-> |
| 1370 | common.type == ACPI_TYPE_LOCAL_REFERENCE) |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1371 | && ((walk_state->results->results.obj_desc[0])-> |
Bob Moore | 1044f1f | 2008-09-27 11:08:41 +0800 | [diff] [blame] | 1372 | reference.class != ACPI_REFCLASS_INDEX)) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1373 | status = |
| 1374 | acpi_ex_resolve_to_value(&walk_state-> |
| 1375 | results->results. |
| 1376 | obj_desc[0], |
| 1377 | walk_state); |
| 1378 | if (ACPI_FAILURE(status)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1379 | return (status); |
| 1380 | } |
| 1381 | } |
| 1382 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1383 | walk_state->return_desc = |
| 1384 | walk_state->results->results.obj_desc[0]; |
| 1385 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1386 | /* No return operand */ |
| 1387 | |
| 1388 | if (walk_state->num_operands) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1389 | acpi_ut_remove_reference(walk_state-> |
| 1390 | operands[0]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1391 | } |
| 1392 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1393 | walk_state->operands[0] = NULL; |
| 1394 | walk_state->num_operands = 0; |
| 1395 | walk_state->return_desc = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1396 | } |
| 1397 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1398 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 1399 | "Completed RETURN_OP State=%p, RetVal=%p\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1400 | walk_state, walk_state->return_desc)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1401 | |
| 1402 | /* End the control method execution right now */ |
| 1403 | |
| 1404 | status = AE_CTRL_TERMINATE; |
| 1405 | break; |
| 1406 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1407 | case AML_NOOP_OP: |
| 1408 | |
| 1409 | /* Just do nothing! */ |
| 1410 | break; |
| 1411 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1412 | case AML_BREAK_POINT_OP: |
| 1413 | |
Bob Moore | 2b09ce9 | 2009-04-22 13:22:38 +0800 | [diff] [blame] | 1414 | /* |
| 1415 | * Set the single-step flag. This will cause the debugger (if present) |
| 1416 | * to break to the console within the AML debugger at the start of the |
| 1417 | * next AML instruction. |
| 1418 | */ |
| 1419 | ACPI_DEBUGGER_EXEC(acpi_gbl_cm_single_step = TRUE); |
| 1420 | ACPI_DEBUGGER_EXEC(acpi_os_printf |
| 1421 | ("**break** Executed AML BreakPoint opcode\n")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1422 | |
Bob Moore | 2b09ce9 | 2009-04-22 13:22:38 +0800 | [diff] [blame] | 1423 | /* Call to the OSL in case OS wants a piece of the action */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1424 | |
Bob Moore | 2b09ce9 | 2009-04-22 13:22:38 +0800 | [diff] [blame] | 1425 | status = acpi_os_signal(ACPI_SIGNAL_BREAKPOINT, |
| 1426 | "Executed AML Breakpoint opcode"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1427 | break; |
| 1428 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1429 | case AML_BREAK_OP: |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1430 | case AML_CONTINUE_OP: /* ACPI 2.0 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1431 | |
| 1432 | /* Pop and delete control states until we find a while */ |
| 1433 | |
| 1434 | while (walk_state->control_state && |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1435 | (walk_state->control_state->control.opcode != |
| 1436 | AML_WHILE_OP)) { |
| 1437 | control_state = |
| 1438 | acpi_ut_pop_generic_state(&walk_state-> |
| 1439 | control_state); |
| 1440 | acpi_ut_delete_generic_state(control_state); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1441 | } |
| 1442 | |
| 1443 | /* No while found? */ |
| 1444 | |
| 1445 | if (!walk_state->control_state) { |
| 1446 | return (AE_AML_NO_WHILE); |
| 1447 | } |
| 1448 | |
| 1449 | /* Was: walk_state->aml_last_while = walk_state->control_state->Control.aml_predicate_start; */ |
| 1450 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1451 | walk_state->aml_last_while = |
| 1452 | walk_state->control_state->control.package_end; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1453 | |
| 1454 | /* Return status depending on opcode */ |
| 1455 | |
| 1456 | if (op->common.aml_opcode == AML_BREAK_OP) { |
| 1457 | status = AE_CTRL_BREAK; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1458 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1459 | status = AE_CTRL_CONTINUE; |
| 1460 | } |
| 1461 | break; |
| 1462 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1463 | default: |
| 1464 | |
Bob Moore | f6a22b0 | 2010-03-05 17:56:40 +0800 | [diff] [blame] | 1465 | ACPI_ERROR((AE_INFO, "Unknown control opcode=0x%X Op=%p", |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 1466 | op->common.aml_opcode, op)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1467 | |
| 1468 | status = AE_AML_BAD_OPCODE; |
| 1469 | break; |
| 1470 | } |
| 1471 | |
| 1472 | return (status); |
| 1473 | } |