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intr.h revision 1.4.34.1 
      1 /*	$NetBSD: intr.h,v 1.4.34.1 2007/12/13 05:05:19 yamt Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2002 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *        This product includes software developed by the NetBSD
     18  *        Foundation, Inc. and its contributors.
     19  * 4. Neither the name of The NetBSD Foundation nor the names of its
     20  *    contributors may be used to endorse or promote products derived
     21  *    from this software without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     24  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     25  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     26  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     27  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     28  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     29  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     30  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     31  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     32  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     33  * POSSIBILITY OF SUCH DAMAGE.
     34  */
     35 
     36 #ifndef _LANDISK_INTR_H_
     37 #define _LANDISK_INTR_H_
     38 
     39 #include <sh3/intr.h>
     40 
     41 /* Number of interrupt source */
     42 #define _INTR_N		16
     43 
     44 /* Interrupt priority levels */
     45 #define	IPL_VM		12	/* low i/o */
     46 #define	IPL_SCHED	14	/* clock */
     47 #define	IPL_HIGH	15	/* everything */
     48 
     49 typedef uint8_t ipl_t;
     50 typedef struct {
     51 	ipl_t _ipl;
     52 } ipl_cookie_t;
     53 
     54 static inline ipl_cookie_t
     55 makeiplcookie(ipl_t ipl)
     56 {
     57 
     58 	return (ipl_cookie_t){._ipl = ipl << 4};
     59 }
     60 
     61 static inline int
     62 splraiseipl(ipl_cookie_t icookie)
     63 {
     64 
     65 	return _cpu_intr_raise(icookie._ipl);
     66 }
     67 
     68 #include <sys/spl.h>
     69 
     70 #define	spl0()			_cpu_intr_resume(IPL_NONE << 4)
     71 #define	splx(x)			_cpu_intr_resume(x)
     72 
     73 void intr_init(void);
     74 void *extintr_establish(int irq, int level, int (*func)(void *), void *arg);
     75 void extintr_disestablish(void *ih);
     76 void extintr_enable(void *ih);
     77 void extintr_disable(void *ih);
     78 void extintr_disable_by_num(int irq);
     79 
     80 #endif /* !_LANDISK_INTR_H_ */
     81