#include <stdio.h>
#include <fcntl.h>
#include <string.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include <string>
#include <unistd.h>
#include <iostream>

#define MSRACC_NODE_NAME  "/dev/msrAccessDrv"

struct msracc_drv_cmd {
        unsigned int cpu_id;
        unsigned int msr_offset;
        unsigned int val_low;
        unsigned int val_high;
};

#define MSRACC_MAGIC_NUMBER           'x'

/* IOCTL */
#define READ_MSR_IOCTL      1
#define WRITE_MSR_IOCTL     2

#define MSRACC_IOCTL_GET_MSR         _IOR(MSRACC_MAGIC_NUMBER, READ_MSR_IOCTL, struct msracc_drv_cmd)
#define MSRACC_IOCTL_SET_MSR         _IOW(MSRACC_MAGIC_NUMBER, WRITE_MSR_IOCTL, struct msracc_drv_cmd)