1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 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 29 #ifndef _VRTC_H_ 30 #define _VRTC_H_ 31 32 #include <isa/isareg.h> 33 34 struct vrtc; 35 struct vm_snapshot_meta; 36 37 struct vrtc *vrtc_init(struct vm *vm); 38 void vrtc_cleanup(struct vrtc *vrtc); 39 void vrtc_reset(struct vrtc *vrtc); 40 41 time_t vrtc_get_time(struct vm *vm); 42 int vrtc_set_time(struct vm *vm, time_t secs); 43 int vrtc_nvram_write(struct vm *vm, int offset, uint8_t value); 44 int vrtc_nvram_read(struct vm *vm, int offset, uint8_t *retval); 45 46 int vrtc_addr_handler(struct vm *vm, bool in, int port, int bytes, 47 uint32_t *val); 48 int vrtc_data_handler(struct vm *vm, bool in, int port, int bytes, 49 uint32_t *val); 50 51 #ifdef BHYVE_SNAPSHOT 52 int vrtc_snapshot(struct vrtc *vrtc, struct vm_snapshot_meta *meta); 53 #endif 54 55 #endif 56