kernel/drivers/acpi/acpica/rsdump.c

   1 /*******************************************************************************
   2  *
   3  * Module Name: rsdump - AML debugger support for resource structures.
   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 "acresrc.h"
  47
  48 #define _COMPONENT          ACPI_RESOURCES
  49 ACPI_MODULE_NAME("rsdump")
  50
  51 /*
  52  * All functions in this module are used by the AML Debugger only
  53  */
  54 #if defined(ACPI_DEBUGGER)
  55 /* Local prototypes */
  56 static void acpi_rs_out_string(char *title, char *value);
  57
  58 static void acpi_rs_out_integer8(char *title, u8 value);
  59
  60 static void acpi_rs_out_integer16(char *title, u16 value);
  61
  62 static void acpi_rs_out_integer32(char *title, u32 value);
  63
  64 static void acpi_rs_out_integer64(char *title, u64 value);
  65
  66 static void acpi_rs_out_title(char *title);
  67
  68 static void acpi_rs_dump_byte_list(u16 length, u8 *data);
  69
  70 static void acpi_rs_dump_word_list(u16 length, u16 *data);
  71
  72 static void acpi_rs_dump_dword_list(u8 length, u32 *data);
  73
  74 static void acpi_rs_dump_short_byte_list(u8 length, u8 *data);
  75
  76 static void
  77 acpi_rs_dump_resource_source(struct acpi_resource_source *resource_source);
  78
  79 static void acpi_rs_dump_address_common(union acpi_resource_data *resource);
  80
  81 static void
  82 acpi_rs_dump_descriptor(void *resource, struct acpi_rsdump_info *table);
  83
  84 /*******************************************************************************
  85  *
  86  * FUNCTION:    acpi_rs_dump_resource_list
  87  *
  88  * PARAMETERS:  resource_list       - Pointer to a resource descriptor list
  89  *
  90  * RETURN:      None
  91  *
  92  * DESCRIPTION: Dispatches the structure to the correct dump routine.
  93  *
  94  ******************************************************************************/
  95
  96 void acpi_rs_dump_resource_list(struct acpi_resource *resource_list)
  97 {
  98         u32 count = 0;
  99         u32 type;
 100
 101         ACPI_FUNCTION_ENTRY();
 102
 103         /* Check if debug output enabled */
 104
 105         if (!ACPI_IS_DEBUG_ENABLED(ACPI_LV_RESOURCES, _COMPONENT)) {
 106                 return;
 107         }
 108
 109         /* Walk list and dump all resource descriptors (END_TAG terminates) */
 110
 111         do {
 112                 acpi_os_printf("\n[%02X] ", count);
 113                 count++;
 114
 115                 /* Validate Type before dispatch */
 116
 117                 type = resource_list->type;
 118                 if (type > ACPI_RESOURCE_TYPE_MAX) {
 119                         acpi_os_printf
 120                             ("Invalid descriptor type (%X) in resource list\n",
 121                              resource_list->type);
 122                         return;
 123                 }
 124
 125                 /* Sanity check the length. It must not be zero, or we loop forever */
 126
 127                 if (!resource_list->length) {
 128                         acpi_os_printf
 129                             ("Invalid zero length descriptor in resource list\n");
 130                         return;
 131                 }
 132
 133                 /* Dump the resource descriptor */
 134
 135                 if (type == ACPI_RESOURCE_TYPE_SERIAL_BUS) {
 136                         acpi_rs_dump_descriptor(&resource_list->data,
 137                                                 acpi_gbl_dump_serial_bus_dispatch
 138                                                 [resource_list->data.
 139                                                  common_serial_bus.type]);
 140                 } else {
 141                         acpi_rs_dump_descriptor(&resource_list->data,
 142                                                 acpi_gbl_dump_resource_dispatch
 143                                                 [type]);
 144                 }
 145
 146                 /* Point to the next resource structure */
 147
 148                 resource_list = ACPI_NEXT_RESOURCE(resource_list);
 149
 150                 /* Exit when END_TAG descriptor is reached */
 151
 152         } while (type != ACPI_RESOURCE_TYPE_END_TAG);
 153 }
 154
 155 /*******************************************************************************
 156  *
 157  * FUNCTION:    acpi_rs_dump_irq_list
 158  *
 159  * PARAMETERS:  route_table     - Pointer to the routing table to dump.
 160  *
 161  * RETURN:      None
 162  *
 163  * DESCRIPTION: Print IRQ routing table
 164  *
 165  ******************************************************************************/
 166
 167 void acpi_rs_dump_irq_list(u8 *route_table)
 168 {
 169         struct acpi_pci_routing_table *prt_element;
 170         u8 count;
 171
 172         ACPI_FUNCTION_ENTRY();
 173
 174         /* Check if debug output enabled */
 175
 176         if (!ACPI_IS_DEBUG_ENABLED(ACPI_LV_RESOURCES, _COMPONENT)) {
 177                 return;
 178         }
 179
 180         prt_element = ACPI_CAST_PTR(struct acpi_pci_routing_table, route_table);
 181
 182         /* Dump all table elements, Exit on zero length element */
 183
 184         for (count = 0; prt_element->length; count++) {
 185                 acpi_os_printf("\n[%02X] PCI IRQ Routing Table Package\n",
 186                                count);
 187                 acpi_rs_dump_descriptor(prt_element, acpi_rs_dump_prt);
 188
 189                 prt_element = ACPI_ADD_PTR(struct acpi_pci_routing_table,
 190                                            prt_element, prt_element->length);
 191         }
 192 }
 193
 194 /*******************************************************************************
 195  *
 196  * FUNCTION:    acpi_rs_dump_descriptor
 197  *
 198  * PARAMETERS:  resource            - Buffer containing the resource
 199  *              table               - Table entry to decode the resource
 200  *
 201  * RETURN:      None
 202  *
 203  * DESCRIPTION: Dump a resource descriptor based on a dump table entry.
 204  *
 205  ******************************************************************************/
 206
 207 static void
 208 acpi_rs_dump_descriptor(void *resource, struct acpi_rsdump_info *table)
 209 {
 210         u8 *target = NULL;
 211         u8 *previous_target;
 212         char *name;
 213         u8 count;
 214
 215         /* First table entry must contain the table length (# of table entries) */
 216
 217         count = table->offset;
 218
 219         while (count) {
 220                 previous_target = target;
 221                 target = ACPI_ADD_PTR(u8, resource, table->offset);
 222                 name = table->name;
 223
 224                 switch (table->opcode) {
 225                 case ACPI_RSD_TITLE:
 226                         /*
 227                          * Optional resource title
 228                          */
 229                         if (table->name) {
 230                                 acpi_os_printf("%s Resource\n", name);
 231                         }
 232                         break;
 233
 234                         /* Strings */
 235
 236                 case ACPI_RSD_LITERAL:
 237
 238                         acpi_rs_out_string(name,
 239                                            ACPI_CAST_PTR(char, table->pointer));
 240                         break;
 241
 242                 case ACPI_RSD_STRING:
 243
 244                         acpi_rs_out_string(name, ACPI_CAST_PTR(char, target));
 245                         break;
 246
 247                         /* Data items, 8/16/32/64 bit */
 248
 249                 case ACPI_RSD_UINT8:
 250
 251                         if (table->pointer) {
 252                                 acpi_rs_out_string(name, ACPI_CAST_PTR(char,
 253                                                                        table->
 254                                                                        pointer
 255                                                                        [*target]));
 256                         } else {
 257                                 acpi_rs_out_integer8(name, ACPI_GET8(target));
 258                         }
 259                         break;
 260
 261                 case ACPI_RSD_UINT16:
 262
 263                         acpi_rs_out_integer16(name, ACPI_GET16(target));
 264                         break;
 265
 266                 case ACPI_RSD_UINT32:
 267
 268                         acpi_rs_out_integer32(name, ACPI_GET32(target));
 269                         break;
 270
 271                 case ACPI_RSD_UINT64:
 272
 273                         acpi_rs_out_integer64(name, ACPI_GET64(target));
 274                         break;
 275
 276                         /* Flags: 1-bit and 2-bit flags supported */
 277
 278                 case ACPI_RSD_1BITFLAG:
 279
 280                         acpi_rs_out_string(name, ACPI_CAST_PTR(char,
 281                                                                table->
 282                                                                pointer[*target &
 283                                                                        0x01]));
 284                         break;
 285
 286                 case ACPI_RSD_2BITFLAG:
 287
 288                         acpi_rs_out_string(name, ACPI_CAST_PTR(char,
 289                                                                table->
 290                                                                pointer[*target &
 291                                                                        0x03]));
 292                         break;
 293
 294                 case ACPI_RSD_3BITFLAG:
 295
 296                         acpi_rs_out_string(name, ACPI_CAST_PTR(char,
 297                                                                table->
 298                                                                pointer[*target &
 299                                                                        0x07]));
 300                         break;
 301
 302                 case ACPI_RSD_SHORTLIST:
 303                         /*
 304                          * Short byte list (single line output) for DMA and IRQ resources
 305                          * Note: The list length is obtained from the previous table entry
 306                          */
 307                         if (previous_target) {
 308                                 acpi_rs_out_title(name);
 309                                 acpi_rs_dump_short_byte_list(*previous_target,
 310                                                              target);
 311                         }
 312                         break;
 313
 314                 case ACPI_RSD_SHORTLISTX:
 315                         /*
 316                          * Short byte list (single line output) for GPIO vendor data
 317                          * Note: The list length is obtained from the previous table entry
 318                          */
 319                         if (previous_target) {
 320                                 acpi_rs_out_title(name);
 321                                 acpi_rs_dump_short_byte_list(*previous_target,
 322                                                              *
 323                                                              (ACPI_CAST_INDIRECT_PTR
 324                                                               (u8, target)));
 325                         }
 326                         break;
 327
 328                 case ACPI_RSD_LONGLIST:
 329                         /*
 330                          * Long byte list for Vendor resource data
 331                          * Note: The list length is obtained from the previous table entry
 332                          */
 333                         if (previous_target) {
 334                                 acpi_rs_dump_byte_list(ACPI_GET16
 335                                                        (previous_target),
 336                                                        target);
 337                         }
 338                         break;
 339
 340                 case ACPI_RSD_DWORDLIST:
 341                         /*
 342                          * Dword list for Extended Interrupt resources
 343                          * Note: The list length is obtained from the previous table entry
 344                          */
 345                         if (previous_target) {
 346                                 acpi_rs_dump_dword_list(*previous_target,
 347                                                         ACPI_CAST_PTR(u32,
 348                                                                       target));
 349                         }
 350                         break;
 351
 352                 case ACPI_RSD_WORDLIST:
 353                         /*
 354                          * Word list for GPIO Pin Table
 355                          * Note: The list length is obtained from the previous table entry
 356                          */
 357                         if (previous_target) {
 358                                 acpi_rs_dump_word_list(*previous_target,
 359                                                        *(ACPI_CAST_INDIRECT_PTR
 360                                                          (u16, target)));
 361                         }
 362                         break;
 363
 364                 case ACPI_RSD_ADDRESS:
 365                         /*
 366                          * Common flags for all Address resources
 367                          */
 368                         acpi_rs_dump_address_common(ACPI_CAST_PTR
 369                                                     (union acpi_resource_data,
 370                                                      target));
 371                         break;
 372
 373                 case ACPI_RSD_SOURCE:
 374                         /*
 375                          * Optional resource_source for Address resources
 376                          */
 377                         acpi_rs_dump_resource_source(ACPI_CAST_PTR
 378                                                      (struct
 379                                                                    acpi_resource_source,
 380                                                                    target));
 381                         break;
 382
 383                 default:
 384
 385                         acpi_os_printf("**** Invalid table opcode [%X] ****\n",
 386                                        table->opcode);
 387                         return;
 388                 }
 389
 390                 table++;
 391                 count--;
 392         }
 393 }
 394
 395 /*******************************************************************************
 396  *
 397  * FUNCTION:    acpi_rs_dump_resource_source
 398  *
 399  * PARAMETERS:  resource_source     - Pointer to a Resource Source struct
 400  *
 401  * RETURN:      None
 402  *
 403  * DESCRIPTION: Common routine for dumping the optional resource_source and the
 404  *              corresponding resource_source_index.
 405  *
 406  ******************************************************************************/
 407
 408 static void
 409 acpi_rs_dump_resource_source(struct acpi_resource_source *resource_source)
 410 {
 411         ACPI_FUNCTION_ENTRY();
 412
 413         if (resource_source->index == 0xFF) {
 414                 return;
 415         }
 416
 417         acpi_rs_out_integer8("Resource Source Index", resource_source->index);
 418
 419         acpi_rs_out_string("Resource Source",
 420                            resource_source->string_ptr ?
 421                            resource_source->string_ptr : "[Not Specified]");
 422 }
 423
 424 /*******************************************************************************
 425  *
 426  * FUNCTION:    acpi_rs_dump_address_common
 427  *
 428  * PARAMETERS:  resource        - Pointer to an internal resource descriptor
 429  *
 430  * RETURN:      None
 431  *
 432  * DESCRIPTION: Dump the fields that are common to all Address resource
 433  *              descriptors
 434  *
 435  ******************************************************************************/
 436
 437 static void acpi_rs_dump_address_common(union acpi_resource_data *resource)
 438 {
 439         ACPI_FUNCTION_ENTRY();
 440
 441         /* Decode the type-specific flags */
 442
 443         switch (resource->address.resource_type) {
 444         case ACPI_MEMORY_RANGE:
 445
 446                 acpi_rs_dump_descriptor(resource, acpi_rs_dump_memory_flags);
 447                 break;
 448
 449         case ACPI_IO_RANGE:
 450
 451                 acpi_rs_dump_descriptor(resource, acpi_rs_dump_io_flags);
 452                 break;
 453
 454         case ACPI_BUS_NUMBER_RANGE:
 455
 456                 acpi_rs_out_string("Resource Type", "Bus Number Range");
 457                 break;
 458
 459         default:
 460
 461                 acpi_rs_out_integer8("Resource Type",
 462                                      (u8) resource->address.resource_type);
 463                 break;
 464         }
 465
 466         /* Decode the general flags */
 467
 468         acpi_rs_dump_descriptor(resource, acpi_rs_dump_general_flags);
 469 }
 470
 471 /*******************************************************************************
 472  *
 473  * FUNCTION:    acpi_rs_out*
 474  *
 475  * PARAMETERS:  title       - Name of the resource field
 476  *              value       - Value of the resource field
 477  *
 478  * RETURN:      None
 479  *
 480  * DESCRIPTION: Miscellaneous helper functions to consistently format the
 481  *              output of the resource dump routines
 482  *
 483  ******************************************************************************/
 484
 485 static void acpi_rs_out_string(char *title, char *value)
 486 {
 487         acpi_os_printf("%27s : %s", title, value);
 488         if (!*value) {
 489                 acpi_os_printf("[NULL NAMESTRING]");
 490         }
 491         acpi_os_printf("\n");
 492 }
 493
 494 static void acpi_rs_out_integer8(char *title, u8 value)
 495 {
 496         acpi_os_printf("%27s : %2.2X\n", title, value);
 497 }
 498
 499 static void acpi_rs_out_integer16(char *title, u16 value)
 500 {
 501         acpi_os_printf("%27s : %4.4X\n", title, value);
 502 }
 503
 504 static void acpi_rs_out_integer32(char *title, u32 value)
 505 {
 506         acpi_os_printf("%27s : %8.8X\n", title, value);
 507 }
 508
 509 static void acpi_rs_out_integer64(char *title, u64 value)
 510 {
 511         acpi_os_printf("%27s : %8.8X%8.8X\n", title, ACPI_FORMAT_UINT64(value));
 512 }
 513
 514 static void acpi_rs_out_title(char *title)
 515 {
 516         acpi_os_printf("%27s : ", title);
 517 }
 518
 519 /*******************************************************************************
 520  *
 521  * FUNCTION:    acpi_rs_dump*List
 522  *
 523  * PARAMETERS:  length      - Number of elements in the list
 524  *              data        - Start of the list
 525  *
 526  * RETURN:      None
 527  *
 528  * DESCRIPTION: Miscellaneous functions to dump lists of raw data
 529  *
 530  ******************************************************************************/
 531
 532 static void acpi_rs_dump_byte_list(u16 length, u8 * data)
 533 {
 534         u8 i;
 535
 536         for (i = 0; i < length; i++) {
 537                 acpi_os_printf("%25s%2.2X : %2.2X\n", "Byte", i, data[i]);
 538         }
 539 }
 540
 541 static void acpi_rs_dump_short_byte_list(u8 length, u8 * data)
 542 {
 543         u8 i;
 544
 545         for (i = 0; i < length; i++) {
 546                 acpi_os_printf("%X ", data[i]);
 547         }
 548         acpi_os_printf("\n");
 549 }
 550
 551 static void acpi_rs_dump_dword_list(u8 length, u32 * data)
 552 {
 553         u8 i;
 554
 555         for (i = 0; i < length; i++) {
 556                 acpi_os_printf("%25s%2.2X : %8.8X\n", "Dword", i, data[i]);
 557         }
 558 }
 559
 560 static void acpi_rs_dump_word_list(u16 length, u16 *data)
 561 {
 562         u16 i;
 563
 564         for (i = 0; i < length; i++) {
 565                 acpi_os_printf("%25s%2.2X : %4.4X\n", "Word", i, data[i]);
 566         }
 567 }
 568
 569 #endif