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   1 /*
   2  * Apple System Management Control (SMC) Tool
   3  * Copyright (C) 2006 devnull
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; either version 2
   8  * of the License, or (at your option) any later version.
   9
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  18  */
  19
  20 #ifndef __SMC_H__
  21 #define __SMC_H__
  22 #endif
  23
  24 #define SMC_VERSION               "0.01"
  25
  26 #define OP_NONE               0
  27 #define OP_LIST               1
  28 #define OP_READ               2
  29 #define OP_READ_FAN           3
  30 #define OP_WRITE              4
  31
  32 #define KERNEL_INDEX_SMC      2
  33
  34 #define SMC_CMD_READ_BYTES    5
  35 #define SMC_CMD_WRITE_BYTES   6
  36 #define SMC_CMD_READ_INDEX    8
  37 #define SMC_CMD_READ_KEYINFO  9
  38 #define SMC_CMD_READ_PLIMIT   11
  39 #define SMC_CMD_READ_VERS     12
  40
  41 #define DATATYPE_FPE2         "fpe2"
  42 #define DATATYPE_UINT8        "ui8 "
  43 #define DATATYPE_UINT16       "ui16"
  44 #define DATATYPE_UINT32       "ui32"
  45 #define DATATYPE_SP78         "sp78"
  46
  47 // key values
  48 #define SMC_KEY_CPU_TEMP      "TC0D"
  49 #define SMC_KEY_GPU_TEMP      "TG0D"
  50 #define SMC_KEY_FAN0_RPM_MIN  "F0Mn"
  51 #define SMC_KEY_FAN1_RPM_MIN  "F1Mn"
  52 #define SMC_KEY_FAN0_RPM_CUR  "F0Ac"
  53 #define SMC_KEY_FAN1_RPM_CUR  "F1Ac"
  54
  55
  56 typedef struct {
  57   char                  major;
  58   char                  minor;
  59   char                  build;
  60   char                  reserved[1];
  61   UInt16                release;
  62 } SMCKeyData_vers_t;
  63
  64 typedef struct {
  65   UInt16                version;
  66   UInt16                length;
  67   UInt32                cpuPLimit;
  68   UInt32                gpuPLimit;
  69   UInt32                memPLimit;
  70 } SMCKeyData_pLimitData_t;
  71
  72 typedef struct {
  73   UInt32                dataSize;
  74   UInt32                dataType;
  75   char                  dataAttributes;
  76 } SMCKeyData_keyInfo_t;
  77
  78 typedef char              SMCBytes_t[32];
  79
  80 typedef struct {
  81   UInt32                  key;
  82   SMCKeyData_vers_t       vers;
  83   SMCKeyData_pLimitData_t pLimitData;
  84   SMCKeyData_keyInfo_t    keyInfo;
  85   char                    result;
  86   char                    status;
  87   char                    data8;
  88   UInt32                  data32;
  89   SMCBytes_t              bytes;
  90 } SMCKeyData_t;
  91
  92 typedef const char        UInt32ConstChar_t[5];
  93 typedef char              UInt32Char_t[5];
  94
  95 typedef struct {
  96   UInt32Char_t            key;
  97   UInt32                  dataSize;
  98   UInt32Char_t            dataType;
  99   SMCBytes_t              bytes;
 100 } SMCVal_t;
 101
 102 #ifdef __cplusplus
 103 extern "C"
 104 {
 105 #endif
 106
 107 // prototypes
 108 double SMCGetTemperature(const char *key);
 109
 110 #ifdef __cplusplus
 111 }
 112 #endif