6414202f61
Support soft power-off via the ACPI S5 state for bhyve guests and wire up a virtual power button to SIGTERM: - Implement the PM1_EVT and PM1_CTL registers required by ACPI. - Emulate the Reset Control register at I/O port 0xcf9. - Advertise an _S5 package. - Implement an SMI_CMD register with commands to enable and disable ACPI. Currently the only change when ACPI is enabled is to enable the virtual power button via SIGTERM. - Implement a fixed-feature power button when ACPI is enabled by asserting PWRBTN_STS in PM1_EVT when SIGTERM is received. - Add support for EVFILT_SIGNAL events to mevent. - Implement support for the ACPI system command interrupt (SCI) and assert it when needed based on the values in PM1_EVT. Mark the SCI as active-low and level triggered in the MADT and MP Table.
52 lines
1.8 KiB
C
52 lines
1.8 KiB
C
/*-
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* Copyright (c) 2011 NetApp, Inc.
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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, this list of conditions and the following 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 NETAPP, INC ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _MEVENT_H_
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#define _MEVENT_H_
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enum ev_type {
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EVF_READ,
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EVF_WRITE,
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EVF_TIMER,
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EVF_SIGNAL
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};
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struct mevent;
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struct mevent *mevent_add(int fd, enum ev_type type,
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void (*func)(int, enum ev_type, void *),
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void *param);
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int mevent_enable(struct mevent *evp);
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int mevent_disable(struct mevent *evp);
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int mevent_delete(struct mevent *evp);
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int mevent_delete_close(struct mevent *evp);
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void mevent_dispatch(void);
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#endif /* _MEVENT_H_ */
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