sys/arch/xen/include/evtchn.h

   1 /*      $NetBSD: evtchn.h,v 1.17 2008/10/24 21:09:24 jym 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 unsigned int evtchn_do_event(int, struct intrframe *);
  39 void call_evtchn_do_event(int, struct intrframe *);
  40 void call_xenevt_event(int);
  41 int event_set_handler(int, int (*func)(void *), void *, int, const char *);
  42 int event_remove_handler(int, int (*func)(void *), void *);
  43
  44 struct intrhand;
  45 void event_set_iplhandler(struct intrhand *, int);
  46
  47 extern int debug_port;
  48 extern int xen_debug_handler(void *);
  49
  50 int bind_virq_to_evtch(int);
  51 int bind_pirq_to_evtch(int);
  52 int unbind_pirq_from_evtch(int);
  53 int unbind_virq_from_evtch(int);
  54
  55 struct pintrhand {
  56         int pirq;
  57         int evtch;
  58         int (*func)(void *);
  59         void *arg;
  60 };
  61
  62 struct pintrhand *pirq_establish(int, int, int (*)(void *), void *, int,
  63      const char *);
  64
  65 #endif /*  _XEN_EVENTS_H_ */