1 /* $OpenBSD: amdmsr.h,v 1.4 2011/03/23 16:54:35 pirofti Exp $ */ 2 3 /* 4 * Copyright (c) 2008 Marc Balmer <mbalmer@openbsd.org> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #ifndef _MACHINE_AMDMSR_H_ 20 #define _MACHINE_AMDMSR_H_ 21 22 struct amdmsr_req { 23 u_int32_t addr; /* 32-bit MSR address */ 24 u_int64_t val; /* 64-bit MSR value */ 25 }; 26 27 #define RDMSR _IOWR('M', 0, struct amdmsr_req) 28 #define WRMSR _IOW('M', 1, struct amdmsr_req) 29 30 #ifdef _KERNEL 31 int amdmsr_probe(void); 32 #endif 33 34 #endif /* !_MACHINE_AMDMSR_H_ */ 35