sys/dev/acpi/acpica/OsdMisc.c

   1 /*      $NetBSD: OsdMisc.c,v 1.6 2009/07/06 12:36:31 joerg Exp $        */
   2
   3 /*
   4  * Copyright 2001 Wasabi Systems, Inc.
   5  * All rights reserved.
   6  *
   7  * Written by Jason R. Thorpe for Wasabi Systems, Inc.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  * 3. All advertising materials mentioning features or use of this software
  18  *    must display the following acknowledgement:
  19  *      This product includes software developed for the NetBSD Project by
  20  *      Wasabi Systems, Inc.
  21  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
  22  *    or promote products derived from this software without specific prior
  23  *    written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
  26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
  29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  35  * POSSIBILITY OF SUCH DAMAGE.
  36  */
  37
  38 /*
  39  * OS Services Layer
  40  *
  41  * 6.10: Miscellaneous
  42  */
  43
  44 #include <sys/cdefs.h>
  45 __KERNEL_RCSID(0, "$NetBSD: OsdMisc.c,v 1.6 2009/07/06 12:36:31 joerg Exp $");
  46
  47 #include "opt_acpi.h"
  48 #include "opt_ddb.h"
  49
  50 #include <sys/param.h>
  51 #include <sys/systm.h>
  52
  53 #include <machine/db_machdep.h>
  54
  55 #include <ddb/db_extern.h>
  56 #include <ddb/db_output.h>
  57
  58 #include <dev/acpi/acpica.h>
  59 #include <dev/acpi/acpi_osd.h>
  60
  61 #include <external/intel-public/acpica/dist/include/accommon.h>
  62 #include <external/intel-public/acpica/dist/include/acdebug.h>
  63 /*
  64  * for debugging DSDT (try this at your own risk!):
  65  *
  66  * 1. dump your raw DSDT (with acpidump(*1) etc.)
  67  * 2. disassemble with iasl -d (*2)
  68  * 3. modify the ASL file
  69  * 4. compile it with iasl -tc
  70  * 5. copy *.hex to src/sys/dev/acpi/acpica/Osd/dsdt.hex
  71  *    -or-
  72  *    options ACPI_DSDT_FILE="\"yourdsdt.hex\"" in
  73  *    your config file and yourdsdt.hex in the build directory
  74  * 6. options ACPI_DSDT_OVERRIDE in your kernel config file
  75  *    and rebuild the kernel
  76  *
  77  * (*1) /usr/pkgsrc/sysutils/acpidump
  78  * (*2) /usr/pkgsrc/sysutils/acpi-iasl
  79  */
  80
  81 #ifdef ACPI_DSDT_OVERRIDE
  82 #ifndef ACPI_DSDT_FILE
  83 #define ACPI_DSDT_FILE "dsdt.hex"
  84 #endif
  85 #include ACPI_DSDT_FILE
  86 #endif
  87
  88 int acpi_indebugger;
  89
  90 /*
  91  * AcpiOsSignal:
  92  *
  93  *      Break to the debugger or display a breakpoint message.
  94  */
  95 ACPI_STATUS
  96 AcpiOsSignal(UINT32 Function, void *Info)
  97 {
  98         /*
  99          * the upper layer might call with Info = NULL,
 100          * which makes little sense.
 101          */
 102         if (Info == NULL)
 103                 return AE_NO_MEMORY;
 104
 105         switch (Function) {
 106         case ACPI_SIGNAL_FATAL:
 107             {
 108                 ACPI_SIGNAL_FATAL_INFO *info = Info;
 109
 110                 panic("ACPI fatal signal: "
 111                     "Type 0x%08x, Code 0x%08x, Argument 0x%08x",
 112                     info->Type, info->Code, info->Argument);
 113                 /* NOTREACHED */
 114                 break;
 115             }
 116
 117         case ACPI_SIGNAL_BREAKPOINT:
 118             {
 119 #ifdef ACPI_BREAKPOINT
 120                 char *info = Info;
 121
 122                 printf("%s\n", info);
 123 #  if defined(DDB)
 124                 Debugger();
 125 #  else
 126                 printf("ACPI: WARNING: DDB not configured into kernel.\n");
 127                 return AE_NOT_EXIST;
 128 #  endif
 129 #endif
 130                 break;
 131             }
 132
 133         default:
 134                 return AE_BAD_PARAMETER;
 135         }
 136
 137         return AE_OK;
 138 }
 139
 140 ACPI_STATUS
 141 AcpiOsGetLine(char *Buffer)
 142 {
 143 #if defined(DDB)
 144         char *cp;
 145
 146         db_readline(Buffer, 80);
 147         for (cp = Buffer; *cp != 0; cp++)
 148                 if (*cp == '\n' || *cp == '\r')
 149                         *cp = 0;
 150         db_output_line = 0;
 151         return AE_OK;
 152 #else
 153         printf("ACPI: WARNING: DDB not configured into kernel.\n");
 154         return AE_NOT_EXIST;
 155 #endif
 156 }
 157
 158 ACPI_STATUS
 159 AcpiOsTableOverride(ACPI_TABLE_HEADER *ExistingTable,
 160                     ACPI_TABLE_HEADER **NewTable)
 161 {
 162 #ifndef ACPI_DSDT_OVERRIDE
 163         *NewTable = NULL;
 164 #else
 165         if (strncmp(ExistingTable->Signature, "DSDT", 4) == 0)
 166                 *NewTable = (ACPI_TABLE_HEADER *)AmlCode;
 167         else
 168                 *NewTable = NULL;
 169 #endif
 170         return AE_OK;
 171 }
 172
 173 ACPI_STATUS
 174 AcpiOsPredefinedOverride(const ACPI_PREDEFINED_NAMES *InitVal,
 175                          ACPI_STRING *NewVal)
 176 {
 177         if (!InitVal || !NewVal)
 178                 return AE_BAD_PARAMETER;
 179
 180         *NewVal = NULL;
 181         return AE_OK;
 182 }
 183
 184 /*
 185  * acpi_osd_debugger:
 186  *
 187  *      Enter the ACPICA debugger.
 188  */
 189 void
 190 acpi_osd_debugger(void)
 191 {
 192 #ifdef ACPI_DEBUGGER
 193         static int beenhere;
 194         ACPI_PARSE_OBJECT obj;
 195         label_t acpi_jmpbuf;
 196         label_t *savejmp;
 197
 198         if (beenhere == 0) {
 199                 printf("Initializing ACPICA debugger...\n");
 200                 AcpiDbInitialize();
 201                 beenhere = 1;
 202         }
 203
 204         printf("Entering ACPICA debugger...\n");
 205         savejmp = db_recover;
 206         setjmp(&acpi_jmpbuf);
 207         db_recover = &acpi_jmpbuf;
 208
 209         acpi_indebugger = 1;
 210         AcpiDbUserCommands('A', &obj);
 211         acpi_indebugger = 0;
 212
 213         db_recover = savejmp;
 214 #else
 215         printf("ACPI: WARNING: ACPICA debugger not present.\n");
 216 #endif
 217 }