1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2014 Neel Natu (neel@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 unmodified, this list of conditions, and the following
12 *    disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * $FreeBSD: stable/11/sys/amd64/vmm/io/vrtc.h 336190 2018-07-11 07:19:42Z araujo $
29 */
30
31#ifndef _VRTC_H_
32#define	_VRTC_H_
33
34#include <isa/isareg.h>
35
36struct vrtc;
37
38struct vrtc *vrtc_init(struct vm *vm);
39void vrtc_cleanup(struct vrtc *vrtc);
40void vrtc_reset(struct vrtc *vrtc);
41
42time_t vrtc_get_time(struct vm *vm);
43int vrtc_set_time(struct vm *vm, time_t secs);
44int vrtc_nvram_write(struct vm *vm, int offset, uint8_t value);
45int vrtc_nvram_read(struct vm *vm, int offset, uint8_t *retval);
46
47int vrtc_addr_handler(struct vm *vm, int vcpuid, bool in, int port, int bytes,
48    uint32_t *val);
49int vrtc_data_handler(struct vm *vm, int vcpuid, bool in, int port, int bytes,
50    uint32_t *val);
51
52#endif
53