drivers/acpi/acpica/exdebug.c

   1 /******************************************************************************
   2  *
   3  * Module Name: exdebug - Support for stores to the AML Debug Object
   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 "acinterp.h"
  47
  48 #define _COMPONENT          ACPI_EXECUTER
  49 ACPI_MODULE_NAME("exdebug")
  50
  51 #ifndef ACPI_NO_ERROR_MESSAGES
  52 /*******************************************************************************
  53  *
  54  * FUNCTION:    acpi_ex_do_debug_object
  55  *
  56  * PARAMETERS:  source_desc         - Object to be output to "Debug Object"
  57  *              level               - Indentation level (used for packages)
  58  *              index               - Current package element, zero if not pkg
  59  *
  60  * RETURN:      None
  61  *
  62  * DESCRIPTION: Handles stores to the AML Debug Object. For example:
  63  *              Store(INT1, Debug)
  64  *
  65  * This function is not compiled if ACPI_NO_ERROR_MESSAGES is set.
  66  *
  67  * This function is only enabled if acpi_gbl_enable_aml_debug_object is set, or
  68  * if ACPI_LV_DEBUG_OBJECT is set in the acpi_dbg_level. Thus, in the normal
  69  * operational case, stores to the debug object are ignored but can be easily
  70  * enabled if necessary.
  71  *
  72  ******************************************************************************/
  73 void
  74 acpi_ex_do_debug_object(union acpi_operand_object *source_desc,
  75                         u32 level, u32 index)
  76 {
  77         u32 i;
  78         u32 timer;
  79         union acpi_operand_object *object_desc;
  80         u32 value;
  81
  82         ACPI_FUNCTION_TRACE_PTR(ex_do_debug_object, source_desc);
  83
  84         /* Output must be enabled via the debug_object global or the dbg_level */
  85
  86         if (!acpi_gbl_enable_aml_debug_object &&
  87             !(acpi_dbg_level & ACPI_LV_DEBUG_OBJECT)) {
  88                 return_VOID;
  89         }
  90
  91         /*
  92          * We will emit the current timer value (in microseconds) with each
  93          * debug output. Only need the lower 26 bits. This allows for 67
  94          * million microseconds or 67 seconds before rollover.
  95          */
  96         timer = ((u32)acpi_os_get_timer() / 10);        /* (100 nanoseconds to microseconds) */
  97         timer &= 0x03FFFFFF;
  98
  99         /*
 100          * Print line header as long as we are not in the middle of an
 101          * object display
 102          */
 103         if (!((level > 0) && index == 0)) {
 104                 acpi_os_printf("[ACPI Debug %.8u] %*s", timer, level, " ");
 105         }
 106
 107         /* Display the index for package output only */
 108
 109         if (index > 0) {
 110                 acpi_os_printf("(%.2u) ", index - 1);
 111         }
 112
 113         if (!source_desc) {
 114                 acpi_os_printf("[Null Object]\n");
 115                 return_VOID;
 116         }
 117
 118         if (ACPI_GET_DESCRIPTOR_TYPE(source_desc) == ACPI_DESC_TYPE_OPERAND) {
 119                 acpi_os_printf("%s ",
 120                                acpi_ut_get_object_type_name(source_desc));
 121
 122                 if (!acpi_ut_valid_internal_object(source_desc)) {
 123                         acpi_os_printf("%p, Invalid Internal Object!\n",
 124                                        source_desc);
 125                         return_VOID;
 126                 }
 127         } else if (ACPI_GET_DESCRIPTOR_TYPE(source_desc) ==
 128                    ACPI_DESC_TYPE_NAMED) {
 129                 acpi_os_printf("%s: %p\n",
 130                                acpi_ut_get_type_name(((struct
 131                                                        acpi_namespace_node *)
 132                                                       source_desc)->type),
 133                                source_desc);
 134                 return_VOID;
 135         } else {
 136                 return_VOID;
 137         }
 138
 139         /* source_desc is of type ACPI_DESC_TYPE_OPERAND */
 140
 141         switch (source_desc->common.type) {
 142         case ACPI_TYPE_INTEGER:
 143
 144                 /* Output correct integer width */
 145
 146                 if (acpi_gbl_integer_byte_width == 4) {
 147                         acpi_os_printf("0x%8.8X\n",
 148                                        (u32)source_desc->integer.value);
 149                 } else {
 150                         acpi_os_printf("0x%8.8X%8.8X\n",
 151                                        ACPI_FORMAT_UINT64(source_desc->integer.
 152                                                           value));
 153                 }
 154                 break;
 155
 156         case ACPI_TYPE_BUFFER:
 157
 158                 acpi_os_printf("[0x%.2X]\n", (u32)source_desc->buffer.length);
 159                 acpi_ut_dump_buffer(source_desc->buffer.pointer,
 160                                     (source_desc->buffer.length < 256) ?
 161                                     source_desc->buffer.length : 256,
 162                                     DB_BYTE_DISPLAY, 0);
 163                 break;
 164
 165         case ACPI_TYPE_STRING:
 166
 167                 acpi_os_printf("[0x%.2X] \"%s\"\n",
 168                                source_desc->string.length,
 169                                source_desc->string.pointer);
 170                 break;
 171
 172         case ACPI_TYPE_PACKAGE:
 173
 174                 acpi_os_printf("[Contains 0x%.2X Elements]\n",
 175                                source_desc->package.count);
 176
 177                 /* Output the entire contents of the package */
 178
 179                 for (i = 0; i < source_desc->package.count; i++) {
 180                         acpi_ex_do_debug_object(source_desc->package.
 181                                                 elements[i], level + 4, i + 1);
 182                 }
 183                 break;
 184
 185         case ACPI_TYPE_LOCAL_REFERENCE:
 186
 187                 acpi_os_printf("[%s] ",
 188                                acpi_ut_get_reference_name(source_desc));
 189
 190                 /* Decode the reference */
 191
 192                 switch (source_desc->reference.class) {
 193                 case ACPI_REFCLASS_INDEX:
 194
 195                         acpi_os_printf("0x%X\n", source_desc->reference.value);
 196                         break;
 197
 198                 case ACPI_REFCLASS_TABLE:
 199
 200                         /* Case for ddb_handle */
 201
 202                         acpi_os_printf("Table Index 0x%X\n",
 203                                        source_desc->reference.value);
 204                         return_VOID;
 205
 206                 default:
 207
 208                         break;
 209                 }
 210
 211                 acpi_os_printf(" ");
 212
 213                 /* Check for valid node first, then valid object */
 214
 215                 if (source_desc->reference.node) {
 216                         if (ACPI_GET_DESCRIPTOR_TYPE
 217                             (source_desc->reference.node) !=
 218                             ACPI_DESC_TYPE_NAMED) {
 219                                 acpi_os_printf
 220                                     (" %p - Not a valid namespace node\n",
 221                                      source_desc->reference.node);
 222                         } else {
 223                                 acpi_os_printf("Node %p [%4.4s] ",
 224                                                source_desc->reference.node,
 225                                                (source_desc->reference.node)->
 226                                                name.ascii);
 227
 228                                 switch ((source_desc->reference.node)->type) {
 229
 230                                         /* These types have no attached object */
 231
 232                                 case ACPI_TYPE_DEVICE:
 233                                         acpi_os_printf("Device\n");
 234                                         break;
 235
 236                                 case ACPI_TYPE_THERMAL:
 237                                         acpi_os_printf("Thermal Zone\n");
 238                                         break;
 239
 240                                 default:
 241
 242                                         acpi_ex_do_debug_object((source_desc->
 243                                                                  reference.
 244                                                                  node)->object,
 245                                                                 level + 4, 0);
 246                                         break;
 247                                 }
 248                         }
 249                 } else if (source_desc->reference.object) {
 250                         if (ACPI_GET_DESCRIPTOR_TYPE
 251                             (source_desc->reference.object) ==
 252                             ACPI_DESC_TYPE_NAMED) {
 253                                 acpi_ex_do_debug_object(((struct
 254                                                           acpi_namespace_node *)
 255                                                          source_desc->reference.
 256                                                          object)->object,
 257                                                         level + 4, 0);
 258                         } else {
 259                                 object_desc = source_desc->reference.object;
 260                                 value = source_desc->reference.value;
 261
 262                                 switch (object_desc->common.type) {
 263                                 case ACPI_TYPE_BUFFER:
 264
 265                                         acpi_os_printf("Buffer[%u] = 0x%2.2X\n",
 266                                                        value,
 267                                                        *source_desc->reference.
 268                                                        index_pointer);
 269                                         break;
 270
 271                                 case ACPI_TYPE_STRING:
 272
 273                                         acpi_os_printf
 274                                             ("String[%u] = \"%c\" (0x%2.2X)\n",
 275                                              value,
 276                                              *source_desc->reference.
 277                                              index_pointer,
 278                                              *source_desc->reference.
 279                                              index_pointer);
 280                                         break;
 281
 282                                 case ACPI_TYPE_PACKAGE:
 283
 284                                         acpi_os_printf("Package[%u] = ", value);
 285                                         acpi_ex_do_debug_object(*source_desc->
 286                                                                 reference.where,
 287                                                                 level + 4, 0);
 288                                         break;
 289
 290                                 default:
 291
 292                                         acpi_os_printf
 293                                             ("Unknown Reference object type %X\n",
 294                                              object_desc->common.type);
 295                                         break;
 296                                 }
 297                         }
 298                 }
 299                 break;
 300
 301         default:
 302
 303                 acpi_os_printf("%p\n", source_desc);
 304                 break;
 305         }
 306
 307         ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC, "\n"));
 308         return_VOID;
 309 }
 310 #endif