vrtc.h revision 284894 
1/*-
2 * Copyright (c) 2014 Neel Natu (neel@freebsd.org)
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice unmodified, this list of conditions, and the following
10 *    disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 * $FreeBSD: stable/10/sys/amd64/vmm/io/vrtc.h 284894 2015-06-27 22:48:22Z neel $
27 */
28
29#ifndef _VRTC_H_
30#define	_VRTC_H_
31
32#include <isa/isareg.h>
33
34struct vrtc;
35
36struct vrtc *vrtc_init(struct vm *vm);
37void vrtc_cleanup(struct vrtc *vrtc);
38void vrtc_reset(struct vrtc *vrtc);
39
40time_t vrtc_get_time(struct vm *vm);
41int vrtc_set_time(struct vm *vm, time_t secs);
42int vrtc_nvram_write(struct vm *vm, int offset, uint8_t value);
43int vrtc_nvram_read(struct vm *vm, int offset, uint8_t *retval);
44
45int vrtc_addr_handler(struct vm *vm, int vcpuid, bool in, int port, int bytes,
46    uint32_t *val);
47int vrtc_data_handler(struct vm *vm, int vcpuid, bool in, int port, int bytes,
48    uint32_t *val);
49
50#endif
51