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 - 2011, 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
  79         ACPI_FUNCTION_TRACE_PTR(ex_do_debug_object, source_desc);
  80
  81         /* Output must be enabled via the debug_object global or the dbg_level */
  82
  83         if (!acpi_gbl_enable_aml_debug_object &&
  84             !(acpi_dbg_level & ACPI_LV_DEBUG_OBJECT)) {
  85                 return_VOID;
  86         }
  87
  88         /*
  89          * Print line header as long as we are not in the middle of an
  90          * object display
  91          */
  92         if (!((level > 0) && index == 0)) {
  93                 acpi_os_printf("[ACPI Debug] %*s", level, " ");
  94         }
  95
  96         /* Display the index for package output only */
  97
  98         if (index > 0) {
  99                 acpi_os_printf("(%.2u) ", index - 1);
 100         }
 101
 102         if (!source_desc) {
 103                 acpi_os_printf("[Null Object]\n");
 104                 return_VOID;
 105         }
 106
 107         if (ACPI_GET_DESCRIPTOR_TYPE(source_desc) == ACPI_DESC_TYPE_OPERAND) {
 108                 acpi_os_printf("%s ",
 109                                acpi_ut_get_object_type_name(source_desc));
 110
 111                 if (!acpi_ut_valid_internal_object(source_desc)) {
 112                         acpi_os_printf("%p, Invalid Internal Object!\n",
 113                                        source_desc);
 114                         return_VOID;
 115                 }
 116         } else if (ACPI_GET_DESCRIPTOR_TYPE(source_desc) ==
 117                    ACPI_DESC_TYPE_NAMED) {
 118                 acpi_os_printf("%s: %p\n",
 119                                acpi_ut_get_type_name(((struct
 120                                                        acpi_namespace_node *)
 121                                                       source_desc)->type),
 122                                source_desc);
 123                 return_VOID;
 124         } else {
 125                 return_VOID;
 126         }
 127
 128         /* source_desc is of type ACPI_DESC_TYPE_OPERAND */
 129
 130         switch (source_desc->common.type) {
 131         case ACPI_TYPE_INTEGER:
 132
 133                 /* Output correct integer width */
 134
 135                 if (acpi_gbl_integer_byte_width == 4) {
 136                         acpi_os_printf("0x%8.8X\n",
 137                                        (u32)source_desc->integer.value);
 138                 } else {
 139                         acpi_os_printf("0x%8.8X%8.8X\n",
 140                                        ACPI_FORMAT_UINT64(source_desc->integer.
 141                                                           value));
 142                 }
 143                 break;
 144
 145         case ACPI_TYPE_BUFFER:
 146
 147                 acpi_os_printf("[0x%.2X]\n", (u32)source_desc->buffer.length);
 148                 acpi_ut_dump_buffer2(source_desc->buffer.pointer,
 149                                      (source_desc->buffer.length < 256) ?
 150                                      source_desc->buffer.length : 256,
 151                                      DB_BYTE_DISPLAY);
 152                 break;
 153
 154         case ACPI_TYPE_STRING:
 155
 156                 acpi_os_printf("[0x%.2X] \"%s\"\n",
 157                                source_desc->string.length,
 158                                source_desc->string.pointer);
 159                 break;
 160
 161         case ACPI_TYPE_PACKAGE:
 162
 163                 acpi_os_printf("[Contains 0x%.2X Elements]\n",
 164                                source_desc->package.count);
 165
 166                 /* Output the entire contents of the package */
 167
 168                 for (i = 0; i < source_desc->package.count; i++) {
 169                         acpi_ex_do_debug_object(source_desc->package.
 170                                                 elements[i], level + 4, i + 1);
 171                 }
 172                 break;
 173
 174         case ACPI_TYPE_LOCAL_REFERENCE:
 175
 176                 acpi_os_printf("[%s] ",
 177                                acpi_ut_get_reference_name(source_desc));
 178
 179                 /* Decode the reference */
 180
 181                 switch (source_desc->reference.class) {
 182                 case ACPI_REFCLASS_INDEX:
 183
 184                         acpi_os_printf("0x%X\n", source_desc->reference.value);
 185                         break;
 186
 187                 case ACPI_REFCLASS_TABLE:
 188
 189                         /* Case for ddb_handle */
 190
 191                         acpi_os_printf("Table Index 0x%X\n",
 192                                        source_desc->reference.value);
 193                         return;
 194
 195                 default:
 196                         break;
 197                 }
 198
 199                 acpi_os_printf(" ");
 200
 201                 /* Check for valid node first, then valid object */
 202
 203                 if (source_desc->reference.node) {
 204                         if (ACPI_GET_DESCRIPTOR_TYPE
 205                             (source_desc->reference.node) !=
 206                             ACPI_DESC_TYPE_NAMED) {
 207                                 acpi_os_printf
 208                                     (" %p - Not a valid namespace node\n",
 209                                      source_desc->reference.node);
 210                         } else {
 211                                 acpi_os_printf("Node %p [%4.4s] ",
 212                                                source_desc->reference.node,
 213                                                (source_desc->reference.node)->
 214                                                name.ascii);
 215
 216                                 switch ((source_desc->reference.node)->type) {
 217
 218                                         /* These types have no attached object */
 219
 220                                 case ACPI_TYPE_DEVICE:
 221                                         acpi_os_printf("Device\n");
 222                                         break;
 223
 224                                 case ACPI_TYPE_THERMAL:
 225                                         acpi_os_printf("Thermal Zone\n");
 226                                         break;
 227
 228                                 default:
 229                                         acpi_ex_do_debug_object((source_desc->
 230                                                                  reference.
 231                                                                  node)->object,
 232                                                                 level + 4, 0);
 233                                         break;
 234                                 }
 235                         }
 236                 } else if (source_desc->reference.object) {
 237                         if (ACPI_GET_DESCRIPTOR_TYPE
 238                             (source_desc->reference.object) ==
 239                             ACPI_DESC_TYPE_NAMED) {
 240                                 acpi_ex_do_debug_object(((struct
 241                                                           acpi_namespace_node *)
 242                                                          source_desc->reference.
 243                                                          object)->object,
 244                                                         level + 4, 0);
 245                         } else {
 246                                 acpi_ex_do_debug_object(source_desc->reference.
 247                                                         object, level + 4, 0);
 248                         }
 249                 }
 250                 break;
 251
 252         default:
 253
 254                 acpi_os_printf("%p\n", source_desc);
 255                 break;
 256         }
 257
 258         ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC, "\n"));
 259         return_VOID;
 260 }
 261 #endif