ac3ede5371
PVHv1 was officially removed from Xen in 4.9, so just axe the related code from FreeBSD. Note FreeBSD supports PVHv2, which is the replacement for PVHv1. Sponsored by: Citrix Systems R&D Reviewed by: kib, Elliott Mitchell Differential Revision: https://reviews.freebsd.org/D30228
105 lines
3.1 KiB
C
105 lines
3.1 KiB
C
/******************************************************************************
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* evtchn.h
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*
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* Data structures and definitions private to the FreeBSD implementation
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* of the Xen event channel API.
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*
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* Copyright (c) 2004, K A Fraser
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* Copyright (c) 2012, Spectra Logic Corporation
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*
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* This file may be distributed separately from the Linux kernel, or
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* incorporated into other software packages, subject to the following license:
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this source file (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy, modify,
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* merge, publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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* $FreeBSD$
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*/
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#ifndef __XEN_EVTCHN_EVTCHNVAR_H__
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#define __XEN_EVTCHN_EVTCHNVAR_H__
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#include <xen/hypervisor.h>
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#include <xen/interface/event_channel.h>
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enum evtchn_type {
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EVTCHN_TYPE_UNBOUND,
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EVTCHN_TYPE_VIRQ,
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EVTCHN_TYPE_IPI,
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EVTCHN_TYPE_PORT,
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EVTCHN_TYPE_COUNT
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};
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/** Submit a port notification for delivery to a userland evtchn consumer */
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void evtchn_device_upcall(evtchn_port_t port);
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/**
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* Disable signal delivery for an event channel port, returning its
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* previous mask state.
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*
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* \param port The event channel port to query and mask.
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*
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* \returns 1 if event delivery was previously disabled. Otherwise 0.
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*/
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static inline int
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evtchn_test_and_set_mask(evtchn_port_t port)
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{
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shared_info_t *s = HYPERVISOR_shared_info;
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return synch_test_and_set_bit(port, s->evtchn_mask);
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}
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/**
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* Clear any pending event for the given event channel port.
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*
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* \param port The event channel port to clear.
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*/
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static inline void
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evtchn_clear_port(evtchn_port_t port)
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{
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shared_info_t *s = HYPERVISOR_shared_info;
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synch_clear_bit(port, &s->evtchn_pending[0]);
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}
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/**
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* Disable signal delivery for an event channel port.
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*
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* \param port The event channel port to mask.
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*/
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static inline void
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evtchn_mask_port(evtchn_port_t port)
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{
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shared_info_t *s = HYPERVISOR_shared_info;
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synch_set_bit(port, &s->evtchn_mask[0]);
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}
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/**
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* Enable signal delivery for an event channel port.
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*
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* \param port The event channel port to enable.
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*/
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static inline void
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evtchn_unmask_port(evtchn_port_t port)
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{
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evtchn_unmask_t op = { .port = port };
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HYPERVISOR_event_channel_op(EVTCHNOP_unmask, &op);
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}
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#endif /* __XEN_EVTCHN_EVTCHNVAR_H__ */
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