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intr.c revision 1.2.14.1 
      1 /*	$NetBSD: intr.c,v 1.2.14.1 2008/06/02 13:24:31 mjf Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2007 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Andrew Doran.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/param.h>
     33 #include <sys/errno.h>
     34 #include <sys/intr.h>
     35 #include <sys/kmem.h>
     36 #include <sys/cpu.h>
     37 
     38 #include "rump.h"
     39 #include "rumpuser.h"
     40 
     41 struct v_dodgy {
     42 	void	(*func)(void *);
     43 	void	*arg;
     44 };
     45 
     46 void *
     47 softint_establish(u_int flags, void (*func)(void *), void *arg)
     48 {
     49 	struct v_dodgy *vd;
     50 
     51 	vd = kmem_alloc(sizeof(*vd), KM_SLEEP);
     52 	if (vd != NULL) {
     53 		vd->func = func;
     54 		vd->arg = arg;
     55 	}
     56 	return vd;
     57 }
     58 
     59 void
     60 softint_disestablish(void *arg)
     61 {
     62 
     63 	kmem_free(arg, sizeof(struct v_dodgy));
     64 }
     65 
     66 void
     67 softint_schedule(void *arg)
     68 {
     69 	struct v_dodgy *vd;
     70 
     71 	vd = arg;
     72 	(*(vd->func))(arg);
     73 }
     74 
     75 bool
     76 cpu_intr_p(void)
     77 {
     78 
     79 	return false;
     80 }
     81