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      1 /*      $NetBSD: clockport_common.c,v 1.1 2012/04/17 09:59:03 rkujawa Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2012 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Radoslaw Kujawa.
      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 /*
     33  * Routines for generic clockports, shared among all backend drivers.
     34  * TODO: implement clockport_intr_disestablish.
     35  */
     36 
     37 #include <sys/cdefs.h>
     38 
     39 #include <sys/systm.h>
     40 #include <sys/types.h>
     41 #include <sys/bus.h>
     42 #include <sys/kmem.h>
     43 
     44 #include <machine/cpu.h>
     45 
     46 #include <amiga/clockport/clockportvar.h>
     47 
     48 #define CLOCKPORT_GENERIC_IPL		6
     49 
     50 void *
     51 clockport_generic_intr_establish(int (*isr)(void *), void *arg)
     52 {
     53 	struct isr *sc_isr;
     54 
     55 	sc_isr = kmem_alloc(sizeof(struct isr), KM_SLEEP);
     56 
     57 	sc_isr->isr_intr = isr;
     58 	sc_isr->isr_arg = arg;
     59 	sc_isr->isr_ipl = CLOCKPORT_GENERIC_IPL;
     60 
     61 	add_isr(sc_isr);
     62 
     63 	return sc_isr;
     64 }
     65 
     66