1 /* $NetBSD: evtchn.h,v 1.26 2018/06/24 13:35:32 jdolecek 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 #define NR_PIRQS 256 33 34 extern struct evtsource *evtsource[]; 35 36 void events_default_setup(void); 37 void events_init(void); 38 bool events_suspend(void); 39 bool events_resume(void); 40 41 unsigned int evtchn_do_event(int, struct intrframe *); 42 void call_evtchn_do_event(int, struct intrframe *); 43 void call_xenevt_event(int); 44 int event_set_handler(int, int (*func)(void *), void *, int, const char *, 45 const char *); 46 int event_remove_handler(int, int (*func)(void *), void *); 47 48 struct cpu_info; 49 struct intrhand; 50 void event_set_iplhandler(struct cpu_info *, struct intrhand *, int); 51 52 extern int debug_port; 53 extern int xen_debug_handler(void *); 54 55 int bind_virq_to_evtch(int); 56 int bind_pirq_to_evtch(int); 57 int get_pirq_to_evtch(int); 58 int unbind_pirq_from_evtch(int); 59 int unbind_virq_from_evtch(int); 60 61 evtchn_port_t bind_vcpu_to_evtch(cpuid_t); 62 63 struct pintrhand { 64 /* See comments in x86/include/intr.h:struct intrhand {} */ 65 int pic_type; 66 int pirq; 67 int evtch; 68 int (*func)(void *); 69 void *arg; 70 }; 71 72 struct pintrhand *pirq_establish(int, int, int (*)(void *), void *, int, 73 const char *, const char *); 74 void pirq_disestablish(struct pintrhand *); 75 76 #endif /* _XEN_EVENTS_H_ */ 77