1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2006-2008 Stanislav Sedov <stas@FreeBSD.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #ifndef _CPUCTL_H_ 30 #define _CPUCTL_H_ 31 32 typedef struct { 33 int msr; /* MSR to read */ 34 uint64_t data; 35 } cpuctl_msr_args_t; 36 37 typedef struct { 38 int level; /* CPUID level */ 39 uint32_t data[4]; 40 } cpuctl_cpuid_args_t; 41 42 typedef struct { 43 int level; /* CPUID level */ 44 int level_type; /* CPUID level type */ 45 uint32_t data[4]; 46 } cpuctl_cpuid_count_args_t; 47 48 typedef struct { 49 void *data; 50 size_t size; 51 } cpuctl_update_args_t; 52 53 #define CPUCTL_RDMSR _IOWR('c', 1, cpuctl_msr_args_t) 54 #define CPUCTL_WRMSR _IOWR('c', 2, cpuctl_msr_args_t) 55 #define CPUCTL_CPUID _IOWR('c', 3, cpuctl_cpuid_args_t) 56 #define CPUCTL_UPDATE _IOWR('c', 4, cpuctl_update_args_t) 57 #define CPUCTL_MSRSBIT _IOWR('c', 5, cpuctl_msr_args_t) 58 #define CPUCTL_MSRCBIT _IOWR('c', 6, cpuctl_msr_args_t) 59 #define CPUCTL_CPUID_COUNT _IOWR('c', 7, cpuctl_cpuid_count_args_t) 60 #define CPUCTL_EVAL_CPU_FEATURES _IO('c', 8) 61 62 #endif /* _CPUCTL_H_ */ 63