1 /* $NetBSD: evtchn.h,v 1.32 2020/05/07 19:48:58 bouyer Exp $ */ 2 3 /* 4 * 5 * Copyright (c) 2004 Christian Limpach. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following 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 _XEN_EVENTS_H_ 30 #define _XEN_EVENTS_H_ 31 32 extern struct evtsource *evtsource[]; 33 34 void events_default_setup(void); 35 void events_init(void); 36 bool events_suspend(void); 37 bool events_resume(void); 38 39 unsigned int evtchn_do_event(int, struct intrframe *); 40 void call_evtchn_do_event(int, struct intrframe *); 41 void call_xenevt_event(int); 42 struct intrhand *event_set_handler(int, int (*func)(void *), void *, 43 int, const char *, const char *, bool, struct cpu_info *); 44 int event_remove_handler(int, int (*func)(void *), void *); 45 46 struct cpu_info; 47 struct intrhand; 48 49 extern int debug_port; 50 extern int xen_debug_handler(void *); 51 52 int bind_virq_to_evtch(int); 53 int bind_pirq_to_evtch(int); 54 int get_pirq_to_evtch(int); 55 int unbind_pirq_from_evtch(int); 56 int unbind_virq_from_evtch(int); 57 58 evtchn_port_t bind_vcpu_to_evtch(cpuid_t); 59 60 struct pintrhand { 61 /* See comments in x86/include/intr.h:struct intrhand {} */ 62 struct pic *pic; 63 struct intrhand *ih; 64 int pirq; 65 int evtch; 66 int (*func)(void *); 67 void *arg; 68 }; 69 70 struct pintrhand *pirq_establish(int, int, int (*)(void *), void *, int, 71 const char *, const char *, bool); 72 void pirq_disestablish(struct pintrhand *); 73 74 #endif /* _XEN_EVENTS_H_ */ 75