drivers/bus/acpi/acpica/executer/exdebug.c

   1 /******************************************************************************
   2  *
   3  * Module Name: exdebug - Support for stores to the AML Debug Object
   4  *
   5  *****************************************************************************/
   6
   7 /*
   8  * Copyright (C) 2000 - 2017, 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.h"
  45 #include "accommon.h"
  46 #include "acinterp.h"
  47
  48
  49 #define _COMPONENT          ACPI_EXECUTER
  50         ACPI_MODULE_NAME    ("exdebug")
  51
  52
  53 #ifndef ACPI_NO_ERROR_MESSAGES
  54 /*******************************************************************************
  55  *
  56  * FUNCTION:    AcpiExDoDebugObject
  57  *
  58  * PARAMETERS:  SourceDesc          - Object to be output to "Debug Object"
  59  *              Level               - Indentation level (used for packages)
  60  *              Index               - Current package element, zero if not pkg
  61  *
  62  * RETURN:      None
  63  *
  64  * DESCRIPTION: Handles stores to the AML Debug Object. For example:
  65  *              Store(INT1, Debug)
  66  *
  67  * This function is not compiled if ACPI_NO_ERROR_MESSAGES is set.
  68  *
  69  * This function is only enabled if AcpiGbl_EnableAmlDebugObject is set, or
  70  * if ACPI_LV_DEBUG_OBJECT is set in the AcpiDbgLevel. Thus, in the normal
  71  * operational case, stores to the debug object are ignored but can be easily
  72  * enabled if necessary.
  73  *
  74  ******************************************************************************/
  75
  76 void
  77 AcpiExDoDebugObject (
  78     ACPI_OPERAND_OBJECT     *SourceDesc,
  79     UINT32                  Level,
  80     UINT32                  Index)
  81 {
  82     UINT32                  i;
  83     UINT32                  Timer;
  84     ACPI_OPERAND_OBJECT     *ObjectDesc;
  85     UINT32                  Value;
  86
  87
  88     ACPI_FUNCTION_TRACE_PTR (ExDoDebugObject, SourceDesc);
  89
  90
  91     /* Output must be enabled via the DebugObject global or the DbgLevel */
  92
  93     if (!AcpiGbl_EnableAmlDebugObject &&
  94         !(AcpiDbgLevel & ACPI_LV_DEBUG_OBJECT))
  95     {
  96         return_VOID;
  97     }
  98
  99     /* Null string or newline -- don't emit the line header */
 100
 101     if (SourceDesc &&
 102         (ACPI_GET_DESCRIPTOR_TYPE (SourceDesc) == ACPI_DESC_TYPE_OPERAND) &&
 103         (SourceDesc->Common.Type == ACPI_TYPE_STRING))
 104     {
 105         if ((SourceDesc->String.Length == 0) ||
 106                 ((SourceDesc->String.Length == 1) &&
 107                 (*SourceDesc->String.Pointer == '\n')))
 108         {
 109             AcpiOsPrintf ("\n");
 110             return_VOID;
 111         }
 112     }
 113
 114     /*
 115      * Print line header as long as we are not in the middle of an
 116      * object display
 117      */
 118     if (!((Level > 0) && Index == 0))
 119     {
 120         if (AcpiGbl_DisplayDebugTimer)
 121         {
 122             /*
 123              * We will emit the current timer value (in microseconds) with each
 124              * debug output. Only need the lower 26 bits. This allows for 67
 125              * million microseconds or 67 seconds before rollover.
 126              *
 127              * Convert 100 nanosecond units to microseconds
 128              */
 129             Timer = ((UINT32) AcpiOsGetTimer () / 10);
 130             Timer &= 0x03FFFFFF;
 131
 132             AcpiOsPrintf ("ACPI Debug: T=0x%8.8X %*s", Timer, Level, " ");
 133         }
 134         else
 135         {
 136             AcpiOsPrintf ("ACPI Debug: %*s", Level, " ");
 137         }
 138     }
 139
 140     /* Display the index for package output only */
 141
 142     if (Index > 0)
 143     {
 144        AcpiOsPrintf ("(%.2u) ", Index - 1);
 145     }
 146
 147     if (!SourceDesc)
 148     {
 149         AcpiOsPrintf ("[Null Object]\n");
 150         return_VOID;
 151     }
 152
 153     if (ACPI_GET_DESCRIPTOR_TYPE (SourceDesc) == ACPI_DESC_TYPE_OPERAND)
 154     {
 155         /* No object type prefix needed for integers and strings */
 156
 157         if ((SourceDesc->Common.Type != ACPI_TYPE_INTEGER) &&
 158             (SourceDesc->Common.Type != ACPI_TYPE_STRING))
 159         {
 160             AcpiOsPrintf ("%s  ", AcpiUtGetObjectTypeName (SourceDesc));
 161         }
 162
 163         if (!AcpiUtValidInternalObject (SourceDesc))
 164         {
 165            AcpiOsPrintf ("%p, Invalid Internal Object!\n", SourceDesc);
 166            return_VOID;
 167         }
 168     }
 169     else if (ACPI_GET_DESCRIPTOR_TYPE (SourceDesc) == ACPI_DESC_TYPE_NAMED)
 170     {
 171         AcpiOsPrintf ("%s  (Node %p)\n",
 172             AcpiUtGetTypeName (((ACPI_NAMESPACE_NODE *) SourceDesc)->Type),
 173                 SourceDesc);
 174         return_VOID;
 175     }
 176     else
 177     {
 178         return_VOID;
 179     }
 180
 181     /* SourceDesc is of type ACPI_DESC_TYPE_OPERAND */
 182
 183     switch (SourceDesc->Common.Type)
 184     {
 185     case ACPI_TYPE_INTEGER:
 186
 187         /* Output correct integer width */
 188
 189         if (AcpiGbl_IntegerByteWidth == 4)
 190         {
 191             AcpiOsPrintf ("0x%8.8X\n",
 192                 (UINT32) SourceDesc->Integer.Value);
 193         }
 194         else
 195         {
 196             AcpiOsPrintf ("0x%8.8X%8.8X\n",
 197                 ACPI_FORMAT_UINT64 (SourceDesc->Integer.Value));
 198         }
 199         break;
 200
 201     case ACPI_TYPE_BUFFER:
 202
 203         AcpiOsPrintf ("[0x%.2X]\n", (UINT32) SourceDesc->Buffer.Length);
 204         AcpiUtDumpBuffer (SourceDesc->Buffer.Pointer,
 205             (SourceDesc->Buffer.Length < 256) ?
 206                 SourceDesc->Buffer.Length : 256, DB_BYTE_DISPLAY, 0);
 207         break;
 208
 209     case ACPI_TYPE_STRING:
 210
 211         AcpiOsPrintf ("\"%s\"\n", SourceDesc->String.Pointer);
 212         break;
 213
 214     case ACPI_TYPE_PACKAGE:
 215
 216         AcpiOsPrintf ("(Contains 0x%.2X Elements):\n",
 217             SourceDesc->Package.Count);
 218
 219         /* Output the entire contents of the package */
 220
 221         for (i = 0; i < SourceDesc->Package.Count; i++)
 222         {
 223             AcpiExDoDebugObject (SourceDesc->Package.Elements[i],
 224                 Level + 4, i + 1);
 225         }
 226         break;
 227
 228     case ACPI_TYPE_LOCAL_REFERENCE:
 229
 230         AcpiOsPrintf ("[%s] ", AcpiUtGetReferenceName (SourceDesc));
 231
 232         /* Decode the reference */
 233
 234         switch (SourceDesc->Reference.Class)
 235         {
 236         case ACPI_REFCLASS_INDEX:
 237
 238             AcpiOsPrintf ("0x%X\n", SourceDesc->Reference.Value);
 239             break;
 240
 241         case ACPI_REFCLASS_TABLE:
 242
 243             /* Case for DdbHandle */
 244
 245             AcpiOsPrintf ("Table Index 0x%X\n", SourceDesc->Reference.Value);
 246             return_VOID;
 247
 248         default:
 249
 250             break;
 251         }
 252
 253         AcpiOsPrintf ("  ");
 254
 255         /* Check for valid node first, then valid object */
 256
 257         if (SourceDesc->Reference.Node)
 258         {
 259             if (ACPI_GET_DESCRIPTOR_TYPE (SourceDesc->Reference.Node) !=
 260                 ACPI_DESC_TYPE_NAMED)
 261             {
 262                 AcpiOsPrintf (" %p - Not a valid namespace node\n",
 263                     SourceDesc->Reference.Node);
 264             }
 265             else
 266             {
 267                 AcpiOsPrintf ("Node %p [%4.4s] ", SourceDesc->Reference.Node,
 268                     (SourceDesc->Reference.Node)->Name.Ascii);
 269
 270                 switch ((SourceDesc->Reference.Node)->Type)
 271                 {
 272                 /* These types have no attached object */
 273
 274                 case ACPI_TYPE_DEVICE:
 275                     AcpiOsPrintf ("Device\n");
 276                     break;
 277
 278                 case ACPI_TYPE_THERMAL:
 279                     AcpiOsPrintf ("Thermal Zone\n");
 280                     break;
 281
 282                 default:
 283
 284                     AcpiExDoDebugObject ((SourceDesc->Reference.Node)->Object,
 285                         Level + 4, 0);
 286                     break;
 287                 }
 288             }
 289         }
 290         else if (SourceDesc->Reference.Object)
 291         {
 292             if (ACPI_GET_DESCRIPTOR_TYPE (SourceDesc->Reference.Object) ==
 293                 ACPI_DESC_TYPE_NAMED)
 294             {
 295                 /* Reference object is a namespace node */
 296
 297                 AcpiExDoDebugObject (ACPI_CAST_PTR (ACPI_OPERAND_OBJECT,
 298                     SourceDesc->Reference.Object),
 299                     Level + 4, 0);
 300             }
 301             else
 302             {
 303                 ObjectDesc = SourceDesc->Reference.Object;
 304                 Value = SourceDesc->Reference.Value;
 305
 306                 switch (ObjectDesc->Common.Type)
 307                 {
 308                 case ACPI_TYPE_BUFFER:
 309
 310                     AcpiOsPrintf ("Buffer[%u] = 0x%2.2X\n",
 311                         Value, *SourceDesc->Reference.IndexPointer);
 312                     break;
 313
 314                 case ACPI_TYPE_STRING:
 315
 316                     AcpiOsPrintf ("String[%u] = \"%c\" (0x%2.2X)\n",
 317                         Value, *SourceDesc->Reference.IndexPointer,
 318                         *SourceDesc->Reference.IndexPointer);
 319                     break;
 320
 321                 case ACPI_TYPE_PACKAGE:
 322
 323                     AcpiOsPrintf ("Package[%u] = ", Value);
 324                     if (!(*SourceDesc->Reference.Where))
 325                     {
 326                         AcpiOsPrintf ("[Uninitialized Package Element]\n");
 327                     }
 328                     else
 329                     {
 330                         AcpiExDoDebugObject (*SourceDesc->Reference.Where,
 331                             Level+4, 0);
 332                     }
 333                     break;
 334
 335                 default:
 336
 337                     AcpiOsPrintf ("Unknown Reference object type %X\n",
 338                         ObjectDesc->Common.Type);
 339                     break;
 340                 }
 341             }
 342         }
 343         break;
 344
 345     default:
 346
 347         AcpiOsPrintf ("(Descriptor %p)\n", SourceDesc);
 348         break;
 349     }
 350
 351     ACPI_DEBUG_PRINT_RAW ((ACPI_DB_EXEC, "\n"));
 352     return_VOID;
 353 }
 354 #endif