7aa6460c48
The new RTC emulation supports all interrupt modes: periodic, update ended and alarm. It is also capable of maintaining the date/time and NVRAM contents across virtual machine reset. Also, the date/time fields can now be modified by the guest. Since bhyve now emulates both the PIT and the RTC there is no need for "Legacy Replacement Routing" in the HPET so get rid of it. The RTC device state can be inspected via bhyvectl as follows: bhyvectl --vm=vm --get-rtc-time bhyvectl --vm=vm --set-rtc-time=<unix_time_secs> bhyvectl --vm=vm --rtc-nvram-offset=<offset> --get-rtc-nvram bhyvectl --vm=vm --rtc-nvram-offset=<offset> --set-rtc-nvram=<value> Reviewed by: tychon Discussed with: grehan Differential Revision: https://reviews.freebsd.org/D1385 MFC after: 2 weeks
51 lines
1.9 KiB
C
51 lines
1.9 KiB
C
/*-
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* Copyright (c) 2014 Neel Natu (neel@freebsd.org)
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice unmodified, this list of conditions, and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _VRTC_H_
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#define _VRTC_H_
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#include <isa/isareg.h>
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struct vrtc;
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struct vrtc *vrtc_init(struct vm *vm);
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void vrtc_cleanup(struct vrtc *vrtc);
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void vrtc_reset(struct vrtc *vrtc);
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time_t vrtc_get_time(struct vm *vm);
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int vrtc_set_time(struct vm *vm, time_t secs);
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int vrtc_nvram_write(struct vm *vm, int offset, uint8_t value);
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int vrtc_nvram_read(struct vm *vm, int offset, uint8_t *retval);
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int vrtc_addr_handler(struct vm *vm, int vcpuid, bool in, int port, int bytes,
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uint32_t *val);
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int vrtc_data_handler(struct vm *vm, int vcpuid, bool in, int port, int bytes,
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uint32_t *val);
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#endif
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