acrn-hypervisor/devicemodel/include/rtc.h

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/*-
* Copyright (c) 2014 Neel Natu (neel@freebsd.org)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice unmodified, this list of conditions, and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _RTC_H_
#define _RTC_H_
#include "types.h"
#define IO_RTC 0x070 /* RTC */
#define RTC_LMEM_LSB 0x34
#define RTC_LMEM_MSB 0x35
#define RTC_HMEM_LSB 0x5b
#define RTC_HMEM_SB 0x5c
#define RTC_HMEM_MSB 0x5d
struct vrtc;
struct vmctx;
int vrtc_init(struct vmctx *ctx);
void vrtc_enable_localtime(int l_time);
void vrtc_deinit(struct vmctx *ctx);
void vrtc_reset(struct vrtc *vrtc);
time_t vrtc_get_time(struct vrtc *vrtc);
int vrtc_set_time(struct vrtc *vrtc, time_t secs);
int vrtc_nvram_read(struct vrtc *vrtc, int offset, uint8_t *retval);
int vrtc_nvram_write(struct vrtc *vrtc, int offset, uint8_t value);
int vrtc_addr_handler(struct vmctx *ctx, int vcpu, int in, int port,
int bytes, uint32_t *eax, void *arg);
int vrtc_data_handler(struct vmctx *ctx, int vcpu, int in, int port,
int bytes, uint32_t *eax, void *arg);
#endif