drivers/acpi/acpica/dbobject.c

   1 /*******************************************************************************
   2  *
   3  * Module Name: dbobject - ACPI object decode and display
   4  *
   5  ******************************************************************************/
   6
   7 /*
   8  * Copyright (C) 2000 - 2015, Intel Corp.
   9  * All rights reserved.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions, and the following disclaimer,
  16  *    without modification.
  17  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  18  *    substantially similar to the "NO WARRANTY" disclaimer below
  19  *    ("Disclaimer") and any redistribution must be conditioned upon
  20  *    including a substantially similar Disclaimer requirement for further
  21  *    binary redistribution.
  22  * 3. Neither the names of the above-listed copyright holders nor the names
  23  *    of any contributors may be used to endorse or promote products derived
  24  *    from this software without specific prior written permission.
  25  *
  26  * Alternatively, this software may be distributed under the terms of the
  27  * GNU General Public License ("GPL") version 2 as published by the Free
  28  * Software Foundation.
  29  *
  30  * NO WARRANTY
  31  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  32  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  33  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  34  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  35  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  36  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  37  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  38  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  39  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  40  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  41  * POSSIBILITY OF SUCH DAMAGES.
  42  */
  43
  44 #include <acpi/acpi.h>
  45 #include "accommon.h"
  46 #include "acnamesp.h"
  47 #include "acdebug.h"
  48
  49 #define _COMPONENT          ACPI_CA_DEBUGGER
  50 ACPI_MODULE_NAME("dbobject")
  51
  52 /* Local prototypes */
  53 static void acpi_db_decode_node(struct acpi_namespace_node *node);
  54
  55 /*******************************************************************************
  56  *
  57  * FUNCTION:    acpi_db_dump_method_info
  58  *
  59  * PARAMETERS:  status          - Method execution status
  60  *              walk_state      - Current state of the parse tree walk
  61  *
  62  * RETURN:      None
  63  *
  64  * DESCRIPTION: Called when a method has been aborted because of an error.
  65  *              Dumps the method execution stack, and the method locals/args,
  66  *              and disassembles the AML opcode that failed.
  67  *
  68  ******************************************************************************/
  69
  70 void
  71 acpi_db_dump_method_info(acpi_status status, struct acpi_walk_state *walk_state)
  72 {
  73         struct acpi_thread_state *thread;
  74
  75         /* Ignore control codes, they are not errors */
  76
  77         if ((status & AE_CODE_MASK) == AE_CODE_CONTROL) {
  78                 return;
  79         }
  80
  81         /* We may be executing a deferred opcode */
  82
  83         if (walk_state->deferred_node) {
  84                 acpi_os_printf("Executing subtree for Buffer/Package/Region\n");
  85                 return;
  86         }
  87
  88         /*
  89          * If there is no Thread, we are not actually executing a method.
  90          * This can happen when the iASL compiler calls the interpreter
  91          * to perform constant folding.
  92          */
  93         thread = walk_state->thread;
  94         if (!thread) {
  95                 return;
  96         }
  97
  98         /* Display the method locals and arguments */
  99
 100         acpi_os_printf("\n");
 101         acpi_db_decode_locals(walk_state);
 102         acpi_os_printf("\n");
 103         acpi_db_decode_arguments(walk_state);
 104         acpi_os_printf("\n");
 105 }
 106
 107 /*******************************************************************************
 108  *
 109  * FUNCTION:    acpi_db_decode_internal_object
 110  *
 111  * PARAMETERS:  obj_desc        - Object to be displayed
 112  *
 113  * RETURN:      None
 114  *
 115  * DESCRIPTION: Short display of an internal object. Numbers/Strings/Buffers.
 116  *
 117  ******************************************************************************/
 118
 119 void acpi_db_decode_internal_object(union acpi_operand_object *obj_desc)
 120 {
 121         u32 i;
 122
 123         if (!obj_desc) {
 124                 acpi_os_printf(" Uninitialized");
 125                 return;
 126         }
 127
 128         if (ACPI_GET_DESCRIPTOR_TYPE(obj_desc) != ACPI_DESC_TYPE_OPERAND) {
 129                 acpi_os_printf(" %p [%s]", obj_desc,
 130                                acpi_ut_get_descriptor_name(obj_desc));
 131                 return;
 132         }
 133
 134         acpi_os_printf(" %s", acpi_ut_get_object_type_name(obj_desc));
 135
 136         switch (obj_desc->common.type) {
 137         case ACPI_TYPE_INTEGER:
 138
 139                 acpi_os_printf(" %8.8X%8.8X",
 140                                ACPI_FORMAT_UINT64(obj_desc->integer.value));
 141                 break;
 142
 143         case ACPI_TYPE_STRING:
 144
 145                 acpi_os_printf("(%u) \"%.24s",
 146                                obj_desc->string.length,
 147                                obj_desc->string.pointer);
 148
 149                 if (obj_desc->string.length > 24) {
 150                         acpi_os_printf("...");
 151                 } else {
 152                         acpi_os_printf("\"");
 153                 }
 154                 break;
 155
 156         case ACPI_TYPE_BUFFER:
 157
 158                 acpi_os_printf("(%u)", obj_desc->buffer.length);
 159                 for (i = 0; (i < 8) && (i < obj_desc->buffer.length); i++) {
 160                         acpi_os_printf(" %2.2X", obj_desc->buffer.pointer[i]);
 161                 }
 162                 break;
 163
 164         default:
 165
 166                 acpi_os_printf(" %p", obj_desc);
 167                 break;
 168         }
 169 }
 170
 171 /*******************************************************************************
 172  *
 173  * FUNCTION:    acpi_db_decode_node
 174  *
 175  * PARAMETERS:  node        - Object to be displayed
 176  *
 177  * RETURN:      None
 178  *
 179  * DESCRIPTION: Short display of a namespace node
 180  *
 181  ******************************************************************************/
 182
 183 static void acpi_db_decode_node(struct acpi_namespace_node *node)
 184 {
 185
 186         acpi_os_printf("<Node>          Name %4.4s",
 187                        acpi_ut_get_node_name(node));
 188
 189         if (node->flags & ANOBJ_METHOD_ARG) {
 190                 acpi_os_printf(" [Method Arg]");
 191         }
 192         if (node->flags & ANOBJ_METHOD_LOCAL) {
 193                 acpi_os_printf(" [Method Local]");
 194         }
 195
 196         switch (node->type) {
 197
 198                 /* These types have no attached object */
 199
 200         case ACPI_TYPE_DEVICE:
 201
 202                 acpi_os_printf(" Device");
 203                 break;
 204
 205         case ACPI_TYPE_THERMAL:
 206
 207                 acpi_os_printf(" Thermal Zone");
 208                 break;
 209
 210         default:
 211
 212                 acpi_db_decode_internal_object(acpi_ns_get_attached_object
 213                                                (node));
 214                 break;
 215         }
 216 }
 217
 218 /*******************************************************************************
 219  *
 220  * FUNCTION:    acpi_db_display_internal_object
 221  *
 222  * PARAMETERS:  obj_desc        - Object to be displayed
 223  *              walk_state      - Current walk state
 224  *
 225  * RETURN:      None
 226  *
 227  * DESCRIPTION: Short display of an internal object
 228  *
 229  ******************************************************************************/
 230
 231 void
 232 acpi_db_display_internal_object(union acpi_operand_object *obj_desc,
 233                                 struct acpi_walk_state *walk_state)
 234 {
 235         u8 type;
 236
 237         acpi_os_printf("%p ", obj_desc);
 238
 239         if (!obj_desc) {
 240                 acpi_os_printf("<Null Object>\n");
 241                 return;
 242         }
 243
 244         /* Decode the object type */
 245
 246         switch (ACPI_GET_DESCRIPTOR_TYPE(obj_desc)) {
 247         case ACPI_DESC_TYPE_PARSER:
 248
 249                 acpi_os_printf("<Parser> ");
 250                 break;
 251
 252         case ACPI_DESC_TYPE_NAMED:
 253
 254                 acpi_db_decode_node((struct acpi_namespace_node *)obj_desc);
 255                 break;
 256
 257         case ACPI_DESC_TYPE_OPERAND:
 258
 259                 type = obj_desc->common.type;
 260                 if (type > ACPI_TYPE_LOCAL_MAX) {
 261                         acpi_os_printf(" Type %X [Invalid Type]", (u32)type);
 262                         return;
 263                 }
 264
 265                 /* Decode the ACPI object type */
 266
 267                 switch (obj_desc->common.type) {
 268                 case ACPI_TYPE_LOCAL_REFERENCE:
 269
 270                         acpi_os_printf("[%s] ",
 271                                        acpi_ut_get_reference_name(obj_desc));
 272
 273                         /* Decode the refererence */
 274
 275                         switch (obj_desc->reference.class) {
 276                         case ACPI_REFCLASS_LOCAL:
 277
 278                                 acpi_os_printf("%X ",
 279                                                obj_desc->reference.value);
 280                                 if (walk_state) {
 281                                         obj_desc = walk_state->local_variables
 282                                             [obj_desc->reference.value].object;
 283                                         acpi_os_printf("%p", obj_desc);
 284                                         acpi_db_decode_internal_object
 285                                             (obj_desc);
 286                                 }
 287                                 break;
 288
 289                         case ACPI_REFCLASS_ARG:
 290
 291                                 acpi_os_printf("%X ",
 292                                                obj_desc->reference.value);
 293                                 if (walk_state) {
 294                                         obj_desc = walk_state->arguments
 295                                             [obj_desc->reference.value].object;
 296                                         acpi_os_printf("%p", obj_desc);
 297                                         acpi_db_decode_internal_object
 298                                             (obj_desc);
 299                                 }
 300                                 break;
 301
 302                         case ACPI_REFCLASS_INDEX:
 303
 304                                 switch (obj_desc->reference.target_type) {
 305                                 case ACPI_TYPE_BUFFER_FIELD:
 306
 307                                         acpi_os_printf("%p",
 308                                                        obj_desc->reference.
 309                                                        object);
 310                                         acpi_db_decode_internal_object
 311                                             (obj_desc->reference.object);
 312                                         break;
 313
 314                                 case ACPI_TYPE_PACKAGE:
 315
 316                                         acpi_os_printf("%p",
 317                                                        obj_desc->reference.
 318                                                        where);
 319                                         if (!obj_desc->reference.where) {
 320                                                 acpi_os_printf
 321                                                     (" Uninitialized WHERE pointer");
 322                                         } else {
 323                                                 acpi_db_decode_internal_object(*
 324                                                                                (obj_desc->
 325                                                                                 reference.
 326                                                                                 where));
 327                                         }
 328                                         break;
 329
 330                                 default:
 331
 332                                         acpi_os_printf
 333                                             ("Unknown index target type");
 334                                         break;
 335                                 }
 336                                 break;
 337
 338                         case ACPI_REFCLASS_REFOF:
 339
 340                                 if (!obj_desc->reference.object) {
 341                                         acpi_os_printf
 342                                             ("Uninitialized reference subobject pointer");
 343                                         break;
 344                                 }
 345
 346                                 /* Reference can be to a Node or an Operand object */
 347
 348                                 switch (ACPI_GET_DESCRIPTOR_TYPE
 349                                         (obj_desc->reference.object)) {
 350                                 case ACPI_DESC_TYPE_NAMED:
 351
 352                                         acpi_db_decode_node(obj_desc->reference.
 353                                                             object);
 354                                         break;
 355
 356                                 case ACPI_DESC_TYPE_OPERAND:
 357
 358                                         acpi_db_decode_internal_object
 359                                             (obj_desc->reference.object);
 360                                         break;
 361
 362                                 default:
 363                                         break;
 364                                 }
 365                                 break;
 366
 367                         case ACPI_REFCLASS_NAME:
 368
 369                                 acpi_db_decode_node(obj_desc->reference.node);
 370                                 break;
 371
 372                         case ACPI_REFCLASS_DEBUG:
 373                         case ACPI_REFCLASS_TABLE:
 374
 375                                 acpi_os_printf("\n");
 376                                 break;
 377
 378                         default:        /* Unknown reference class */
 379
 380                                 acpi_os_printf("%2.2X\n",
 381                                                obj_desc->reference.class);
 382                                 break;
 383                         }
 384                         break;
 385
 386                 default:
 387
 388                         acpi_os_printf("<Obj>          ");
 389                         acpi_db_decode_internal_object(obj_desc);
 390                         break;
 391                 }
 392                 break;
 393
 394         default:
 395
 396                 acpi_os_printf("<Not a valid ACPI Object Descriptor> [%s]",
 397                                acpi_ut_get_descriptor_name(obj_desc));
 398                 break;
 399         }
 400
 401         acpi_os_printf("\n");
 402 }
 403
 404 /*******************************************************************************
 405  *
 406  * FUNCTION:    acpi_db_decode_locals
 407  *
 408  * PARAMETERS:  walk_state      - State for current method
 409  *
 410  * RETURN:      None
 411  *
 412  * DESCRIPTION: Display all locals for the currently running control method
 413  *
 414  ******************************************************************************/
 415
 416 void acpi_db_decode_locals(struct acpi_walk_state *walk_state)
 417 {
 418         u32 i;
 419         union acpi_operand_object *obj_desc;
 420         struct acpi_namespace_node *node;
 421         u8 display_locals = FALSE;
 422
 423         obj_desc = walk_state->method_desc;
 424         node = walk_state->method_node;
 425
 426         if (!node) {
 427                 acpi_os_printf
 428                     ("No method node (Executing subtree for buffer or opregion)\n");
 429                 return;
 430         }
 431
 432         if (node->type != ACPI_TYPE_METHOD) {
 433                 acpi_os_printf("Executing subtree for Buffer/Package/Region\n");
 434                 return;
 435         }
 436
 437         /* Are any locals actually set? */
 438
 439         for (i = 0; i < ACPI_METHOD_NUM_LOCALS; i++) {
 440                 obj_desc = walk_state->local_variables[i].object;
 441                 if (obj_desc) {
 442                         display_locals = TRUE;
 443                         break;
 444                 }
 445         }
 446
 447         /* If any are set, only display the ones that are set */
 448
 449         if (display_locals) {
 450                 acpi_os_printf
 451                     ("\nInitialized Local Variables for method [%4.4s]:\n",
 452                      acpi_ut_get_node_name(node));
 453
 454                 for (i = 0; i < ACPI_METHOD_NUM_LOCALS; i++) {
 455                         obj_desc = walk_state->local_variables[i].object;
 456                         if (obj_desc) {
 457                                 acpi_os_printf("  Local%X: ", i);
 458                                 acpi_db_display_internal_object(obj_desc,
 459                                                                 walk_state);
 460                         }
 461                 }
 462         } else {
 463                 acpi_os_printf
 464                     ("No Local Variables are initialized for method [%4.4s]\n",
 465                      acpi_ut_get_node_name(node));
 466         }
 467 }
 468
 469 /*******************************************************************************
 470  *
 471  * FUNCTION:    acpi_db_decode_arguments
 472  *
 473  * PARAMETERS:  walk_state      - State for current method
 474  *
 475  * RETURN:      None
 476  *
 477  * DESCRIPTION: Display all arguments for the currently running control method
 478  *
 479  ******************************************************************************/
 480
 481 void acpi_db_decode_arguments(struct acpi_walk_state *walk_state)
 482 {
 483         u32 i;
 484         union acpi_operand_object *obj_desc;
 485         struct acpi_namespace_node *node;
 486         u8 display_args = FALSE;
 487
 488         node = walk_state->method_node;
 489         obj_desc = walk_state->method_desc;
 490
 491         if (!node) {
 492                 acpi_os_printf
 493                     ("No method node (Executing subtree for buffer or opregion)\n");
 494                 return;
 495         }
 496
 497         if (node->type != ACPI_TYPE_METHOD) {
 498                 acpi_os_printf("Executing subtree for Buffer/Package/Region\n");
 499                 return;
 500         }
 501
 502         /* Are any arguments actually set? */
 503
 504         for (i = 0; i < ACPI_METHOD_NUM_ARGS; i++) {
 505                 obj_desc = walk_state->arguments[i].object;
 506                 if (obj_desc) {
 507                         display_args = TRUE;
 508                         break;
 509                 }
 510         }
 511
 512         /* If any are set, only display the ones that are set */
 513
 514         if (display_args) {
 515                 acpi_os_printf("Initialized Arguments for Method [%4.4s]:  "
 516                                "(%X arguments defined for method invocation)\n",
 517                                acpi_ut_get_node_name(node),
 518                                obj_desc->method.param_count);
 519
 520                 for (i = 0; i < ACPI_METHOD_NUM_ARGS; i++) {
 521                         obj_desc = walk_state->arguments[i].object;
 522                         if (obj_desc) {
 523                                 acpi_os_printf("  Arg%u:   ", i);
 524                                 acpi_db_display_internal_object(obj_desc,
 525                                                                 walk_state);
 526                         }
 527                 }
 528         } else {
 529                 acpi_os_printf
 530                     ("No Arguments are initialized for method [%4.4s]\n",
 531                      acpi_ut_get_node_name(node));
 532         }
 533 }