smc_util.h

/*
 * Apple System Management Control (SMC) Utility
 * Copyright (C) 2012 Alex Leigh
 *
 * 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, see <http://www.gnu.org/licenses/>.
 */

#ifndef __SMC_UTIL_H__
#define __SMC_UTIL_H__
#endif

#define VERSION               "1"

#define OP_NONE               0
#define OP_LIST               1 
#define OP_READ               2
#define OP_READ_FAN           3
#define OP_WRITE              4

#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_CHARSTAR     "ch8*"

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;

typedef struct {
    uint32_t                  key;
    uint8_t                   __d0[22];
    uint32_t                  datasize;
    uint8_t                   __d1[10];
    uint8_t                   cmd;
    uint32_t                  __d2;
    uint8_t                   data[32];
} AppleSMCBuffer_t;