FreeBSD/Linux Kernel Cross Reference
sys/sys/cpuctl.h

     /*-
      * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
      *
      * Copyright (c) 2006-2008 Stanislav Sedov <stas@FreeBSD.org>
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     * $FreeBSD: releng/12.0/sys/sys/cpuctl.h 327597 2018-01-05 21:06:19Z kib $
     */
    
    #ifndef _CPUCTL_H_
    #define _CPUCTL_H_
    
    typedef struct {
            int             msr;    /* MSR to read */
            uint64_t        data;
    } cpuctl_msr_args_t;
    
    typedef struct {
            int             level;          /* CPUID level */
            uint32_t        data[4];
    } cpuctl_cpuid_args_t;
    
    typedef struct {
            int             level;          /* CPUID level */
            int             level_type;     /* CPUID level type */
            uint32_t        data[4];
    } cpuctl_cpuid_count_args_t;
    
    typedef struct {
            void    *data;
            size_t  size;
    } cpuctl_update_args_t;
    
    #define CPUCTL_RDMSR    _IOWR('c', 1, cpuctl_msr_args_t)
    #define CPUCTL_WRMSR    _IOWR('c', 2, cpuctl_msr_args_t)
    #define CPUCTL_CPUID    _IOWR('c', 3, cpuctl_cpuid_args_t)
    #define CPUCTL_UPDATE   _IOWR('c', 4, cpuctl_update_args_t)
    #define CPUCTL_MSRSBIT  _IOWR('c', 5, cpuctl_msr_args_t)
    #define CPUCTL_MSRCBIT  _IOWR('c', 6, cpuctl_msr_args_t)
    #define CPUCTL_CPUID_COUNT _IOWR('c', 7, cpuctl_cpuid_count_args_t)
    #define CPUCTL_EVAL_CPU_FEATURES        _IO('c', 8)
    
    #endif /* _CPUCTL_H_ */

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