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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 | // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 /****************************************************************************** * * Module Name: dsargs - Support for execution of dynamic arguments for static * objects (regions, fields, buffer fields, etc.) * * Copyright (C) 2000 - 2023, Intel Corp. * *****************************************************************************/ #include <acpi/acpi.h> #include "accommon.h" #include "acparser.h" #include "amlcode.h" #include "acdispat.h" #include "acnamesp.h" #define _COMPONENT ACPI_DISPATCHER ACPI_MODULE_NAME("dsargs") /* Local prototypes */ static acpi_status acpi_ds_execute_arguments(struct acpi_namespace_node *node, struct acpi_namespace_node *scope_node, u32 aml_length, u8 *aml_start); /******************************************************************************* * * FUNCTION: acpi_ds_execute_arguments * * PARAMETERS: node - Object NS node * scope_node - Parent NS node * aml_length - Length of executable AML * aml_start - Pointer to the AML * * RETURN: Status. * * DESCRIPTION: Late (deferred) execution of region or field arguments * ******************************************************************************/ static acpi_status acpi_ds_execute_arguments(struct acpi_namespace_node *node, struct acpi_namespace_node *scope_node, u32 aml_length, u8 *aml_start) { acpi_status status; union acpi_parse_object *op; struct acpi_walk_state *walk_state; ACPI_FUNCTION_TRACE_PTR(ds_execute_arguments, aml_start); /* Allocate a new parser op to be the root of the parsed tree */ op = acpi_ps_alloc_op(AML_INT_EVAL_SUBTREE_OP, aml_start); if (!op) { return_ACPI_STATUS(AE_NO_MEMORY); } /* Save the Node for use in acpi_ps_parse_aml */ op->common.node = scope_node; /* Create and initialize a new parser state */ walk_state = acpi_ds_create_walk_state(0, NULL, NULL, NULL); if (!walk_state) { status = AE_NO_MEMORY; goto cleanup; } status = acpi_ds_init_aml_walk(walk_state, op, NULL, aml_start, aml_length, NULL, ACPI_IMODE_LOAD_PASS1); if (ACPI_FAILURE(status)) { acpi_ds_delete_walk_state(walk_state); goto cleanup; } /* Mark this parse as a deferred opcode */ walk_state->parse_flags = ACPI_PARSE_DEFERRED_OP; walk_state->deferred_node = node; /* Pass1: Parse the entire declaration */ status = acpi_ps_parse_aml(walk_state); if (ACPI_FAILURE(status)) { goto cleanup; } /* Get and init the Op created above */ op->common.node = node; acpi_ps_delete_parse_tree(op); /* Evaluate the deferred arguments */ op = acpi_ps_alloc_op(AML_INT_EVAL_SUBTREE_OP, aml_start); if (!op) { return_ACPI_STATUS(AE_NO_MEMORY); } op->common.node = scope_node; /* Create and initialize a new parser state */ walk_state = acpi_ds_create_walk_state(0, NULL, NULL, NULL); if (!walk_state) { status = AE_NO_MEMORY; goto cleanup; } /* Execute the opcode and arguments */ status = acpi_ds_init_aml_walk(walk_state, op, NULL, aml_start, aml_length, NULL, ACPI_IMODE_EXECUTE); if (ACPI_FAILURE(status)) { acpi_ds_delete_walk_state(walk_state); goto cleanup; } /* Mark this execution as a deferred opcode */ walk_state->deferred_node = node; status = acpi_ps_parse_aml(walk_state); cleanup: acpi_ps_delete_parse_tree(op); return_ACPI_STATUS(status); } /******************************************************************************* * * FUNCTION: acpi_ds_get_buffer_field_arguments * * PARAMETERS: obj_desc - A valid buffer_field object * * RETURN: Status. * * DESCRIPTION: Get buffer_field Buffer and Index. This implements the late * evaluation of these field attributes. * ******************************************************************************/ acpi_status acpi_ds_get_buffer_field_arguments(union acpi_operand_object *obj_desc) { union acpi_operand_object *extra_desc; struct acpi_namespace_node *node; acpi_status status; ACPI_FUNCTION_TRACE_PTR(ds_get_buffer_field_arguments, obj_desc); if (obj_desc->common.flags & AOPOBJ_DATA_VALID) { return_ACPI_STATUS(AE_OK); } /* Get the AML pointer (method object) and buffer_field node */ extra_desc = acpi_ns_get_secondary_object(obj_desc); node = obj_desc->buffer_field.node; ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname (ACPI_TYPE_BUFFER_FIELD, node, NULL)); ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "[%4.4s] BufferField Arg Init\n", acpi_ut_get_node_name(node))); /* Execute the AML code for the term_arg arguments */ status = acpi_ds_execute_arguments(node, node->parent, extra_desc->extra.aml_length, extra_desc->extra.aml_start); return_ACPI_STATUS(status); } /******************************************************************************* * * FUNCTION: acpi_ds_get_bank_field_arguments * * PARAMETERS: obj_desc - A valid bank_field object * * RETURN: Status. * * DESCRIPTION: Get bank_field bank_value. This implements the late * evaluation of these field attributes. * ******************************************************************************/ acpi_status acpi_ds_get_bank_field_arguments(union acpi_operand_object *obj_desc) { union acpi_operand_object *extra_desc; struct acpi_namespace_node *node; acpi_status status; ACPI_FUNCTION_TRACE_PTR(ds_get_bank_field_arguments, obj_desc); if (obj_desc->common.flags & AOPOBJ_DATA_VALID) { return_ACPI_STATUS(AE_OK); } /* Get the AML pointer (method object) and bank_field node */ extra_desc = acpi_ns_get_secondary_object(obj_desc); node = obj_desc->bank_field.node; ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname (ACPI_TYPE_LOCAL_BANK_FIELD, node, NULL)); ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "[%4.4s] BankField Arg Init\n", acpi_ut_get_node_name(node))); /* Execute the AML code for the term_arg arguments */ status = acpi_ds_execute_arguments(node, node->parent, extra_desc->extra.aml_length, extra_desc->extra.aml_start); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } status = acpi_ut_add_address_range(obj_desc->region.space_id, obj_desc->region.address, obj_desc->region.length, node); return_ACPI_STATUS(status); } /******************************************************************************* * * FUNCTION: acpi_ds_get_buffer_arguments * * PARAMETERS: obj_desc - A valid Buffer object * * RETURN: Status. * * DESCRIPTION: Get Buffer length and initializer byte list. This implements * the late evaluation of these attributes. * ******************************************************************************/ acpi_status acpi_ds_get_buffer_arguments(union acpi_operand_object *obj_desc) { struct acpi_namespace_node *node; acpi_status status; ACPI_FUNCTION_TRACE_PTR(ds_get_buffer_arguments, obj_desc); if (obj_desc->common.flags & AOPOBJ_DATA_VALID) { return_ACPI_STATUS(AE_OK); } /* Get the Buffer node */ node = obj_desc->buffer.node; if (!node) { ACPI_ERROR((AE_INFO, "No pointer back to namespace node in buffer object %p", obj_desc)); return_ACPI_STATUS(AE_AML_INTERNAL); } ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Buffer Arg Init\n")); /* Execute the AML code for the term_arg arguments */ status = acpi_ds_execute_arguments(node, node, obj_desc->buffer.aml_length, obj_desc->buffer.aml_start); return_ACPI_STATUS(status); } /******************************************************************************* * * FUNCTION: acpi_ds_get_package_arguments * * PARAMETERS: obj_desc - A valid Package object * * RETURN: Status. * * DESCRIPTION: Get Package length and initializer byte list. This implements * the late evaluation of these attributes. * ******************************************************************************/ acpi_status acpi_ds_get_package_arguments(union acpi_operand_object *obj_desc) { struct acpi_namespace_node *node; acpi_status status; ACPI_FUNCTION_TRACE_PTR(ds_get_package_arguments, obj_desc); if (obj_desc->common.flags & AOPOBJ_DATA_VALID) { return_ACPI_STATUS(AE_OK); } /* Get the Package node */ node = obj_desc->package.node; if (!node) { ACPI_ERROR((AE_INFO, "No pointer back to namespace node in package %p", obj_desc)); return_ACPI_STATUS(AE_AML_INTERNAL); } ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Package Argument Init, AML Ptr: %p\n", obj_desc->package.aml_start)); /* Execute the AML code for the term_arg arguments */ status = acpi_ds_execute_arguments(node, node, obj_desc->package.aml_length, obj_desc->package.aml_start); return_ACPI_STATUS(status); } /******************************************************************************* * * FUNCTION: acpi_ds_get_region_arguments * * PARAMETERS: obj_desc - A valid region object * * RETURN: Status. * * DESCRIPTION: Get region address and length. This implements the late * evaluation of these region attributes. * ******************************************************************************/ acpi_status acpi_ds_get_region_arguments(union acpi_operand_object *obj_desc) { struct acpi_namespace_node *node; acpi_status status; union acpi_operand_object *extra_desc; ACPI_FUNCTION_TRACE_PTR(ds_get_region_arguments, obj_desc); if (obj_desc->region.flags & AOPOBJ_DATA_VALID) { return_ACPI_STATUS(AE_OK); } extra_desc = acpi_ns_get_secondary_object(obj_desc); if (!extra_desc) { return_ACPI_STATUS(AE_NOT_EXIST); } /* Get the Region node */ node = obj_desc->region.node; ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname (ACPI_TYPE_REGION, node, NULL)); ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "[%4.4s] OpRegion Arg Init at AML %p\n", acpi_ut_get_node_name(node), extra_desc->extra.aml_start)); /* Execute the argument AML */ status = acpi_ds_execute_arguments(node, extra_desc->extra.scope_node, extra_desc->extra.aml_length, extra_desc->extra.aml_start); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } status = acpi_ut_add_address_range(obj_desc->region.space_id, obj_desc->region.address, obj_desc->region.length, node); return_ACPI_STATUS(status); } |