FreeBSD/Linux Kernel Cross Reference
sys/amd64/vmm/io/vrtc.h

     /*-
      * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
      *
      * 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 _VRTC_H_
    #define _VRTC_H_
    
    #include <isa/isareg.h>
    
    struct vrtc;
    struct vm_snapshot_meta;
    
    struct vrtc *vrtc_init(struct vm *vm);
    void vrtc_cleanup(struct vrtc *vrtc);
    void vrtc_reset(struct vrtc *vrtc);
    
    time_t vrtc_get_time(struct vm *vm);
    int vrtc_set_time(struct vm *vm, time_t secs);
    int vrtc_nvram_write(struct vm *vm, int offset, uint8_t value);
    int vrtc_nvram_read(struct vm *vm, int offset, uint8_t *retval);
    
    int vrtc_addr_handler(struct vm *vm, bool in, int port, int bytes,
        uint32_t *val);
    int vrtc_data_handler(struct vm *vm, bool in, int port, int bytes,
        uint32_t *val);
    
    #ifdef BHYVE_SNAPSHOT
    int vrtc_snapshot(struct vrtc *vrtc, struct vm_snapshot_meta *meta);
    #endif
    
    #endif

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