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
22struct 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
31int amdmsr_probe(void);
32#endif
33
34#endif /* !_MACHINE_AMDMSR_H_ */