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intr.c revision 1.3.2.1 
      1 /*	$NetBSD: intr.c,v 1.3.2.1 2008/09/18 04:37:04 wrstuden 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 struct v_dodgy {
     39 	void	(*func)(void *);
     40 	void	*arg;
     41 };
     42 
     43 void *
     44 softint_establish(u_int flags, void (*func)(void *), void *arg)
     45 {
     46 	struct v_dodgy *vd;
     47 
     48 	vd = kmem_alloc(sizeof(*vd), KM_SLEEP);
     49 	if (vd != NULL) {
     50 		vd->func = func;
     51 		vd->arg = arg;
     52 	}
     53 	return vd;
     54 }
     55 
     56 void
     57 softint_disestablish(void *arg)
     58 {
     59 
     60 	kmem_free(arg, sizeof(struct v_dodgy));
     61 }
     62 
     63 void
     64 softint_schedule(void *arg)
     65 {
     66 	struct v_dodgy *vd;
     67 
     68 	vd = arg;
     69 	(*(vd->func))(arg);
     70 }
     71 
     72 bool
     73 cpu_intr_p(void)
     74 {
     75 
     76 	return false;
     77 }
     78