smc.h

/*
 * Apple System Management Control (SMC) Tool
 * Copyright (C) 2006 devnull
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.

 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.

 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
 USA.
 */

#ifndef __SMC_H__
#define __SMC_H__
#endif

#include <unistd.h>
#include <sys/types.h>

//#include "OSTypes.h"
#include <IOKit/IOKitLib.h>

#define VERSION "1.01"

#define OP_NONE 0
#define OP_LIST 1
#define OP_READ 2
#define OP_READ_FAN 3
#define OP_WRITE 4
#define OP_FUZZ 5
#define OP_COMPARE 6
#define OP_CAST 7

#define KERNEL_INDEX_SMC 2

#define SMC_CMD_READ_BYTES 5
#define SMC_CMD_WRITE_BYTES 6
#define SMC_CMD_READ_INDEX 8
#define SMC_CMD_READ_KEYINFO 9
#define SMC_CMD_READ_PLIMIT 11
#define SMC_CMD_READ_VERS 12

#define DATATYPE_FPE2 "fpe2"
#define DATATYPE_UINT8 "ui8 "
#define DATATYPE_UINT16 "ui16"
#define DATATYPE_UINT32 "ui32"
#define DATATYPE_SP78 "sp78"
#define DATATYPE_FLT "flt "

// key values
/*#define SMC_KEY_CPU_TEMP      "TC0D"
#define SMC_KEY_FAN0_RPM_MIN  "F0Tg"
#define SMC_KEY_FAN1_RPM_MIN  "F1Tg"
#define SMC_KEY_FAN0_RPM_CUR  "F0Ac"
#define SMC_KEY_FAN1_RPM_CUR  "F1Ac"*/

typedef struct {
  char major;
  char minor;
  char build;
  char reserved[1];
  UInt16 release;
} SMCKeyData_vers_t;

typedef struct {
  UInt16 version;
  UInt16 length;
  UInt32 cpuPLimit;
  UInt32 gpuPLimit;
  UInt32 memPLimit;
} SMCKeyData_pLimitData_t;

typedef struct {
  UInt32 dataSize;
  UInt32 dataType;
  char dataAttributes;
} SMCKeyData_keyInfo_t;

typedef char SMCBytes_t[32];

typedef struct {
  UInt32 key;
  SMCKeyData_vers_t vers;
  SMCKeyData_pLimitData_t pLimitData;
  SMCKeyData_keyInfo_t keyInfo;
  char result;
  char status;
  char data8;
  UInt32 data32;
  SMCBytes_t bytes;
} SMCKeyData_t;

typedef char UInt32Char_t[5];

typedef struct {
  UInt32Char_t key;
  UInt32 dataSize;
  UInt32Char_t dataType;
  SMCBytes_t bytes;
} SMCVal_t;

// prototypes
double SMCGetTemperature(char *key);
kern_return_t SMCSetFanRpm(char *key, int32_t rpm);
int SMCGetFanRpm(char *key);