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