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      1 /*	$NetBSD: intr.h,v 1.4 2021/09/24 08:07:40 skrll Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2001, 2003 Wasabi Systems, Inc.
      5  * All rights reserved.
      6  *
      7  * Written by Jason R. Thorpe for Wasabi Systems, Inc.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. All advertising materials mentioning features or use of this software
     18  *    must display the following acknowledgement:
     19  *	This product includes software developed for the NetBSD Project by
     20  *	Wasabi Systems, Inc.
     21  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
     22  *    or promote products derived from this software without specific prior
     23  *    written permission.
     24  *
     25  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
     26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
     29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     35  * POSSIBILITY OF SUCH DAMAGE.
     36  */
     37 
     38 #ifndef	_EPOC32_INTR_H_
     39 #define	_EPOC32_INTR_H_
     40 
     41 #ifdef _KERNEL
     42 
     43 /* Interrupt priority "levels". */
     44 #define	IPL_NONE	0	/* nothing */
     45 #define	IPL_SOFTCLOCK	1	/* timeouts */
     46 #define	IPL_SOFTBIO	2	/* block I/O */
     47 #define	IPL_SOFTNET	3	/* software network interrupt */
     48 #define	IPL_SOFTSERIAL	4	/* software serial interrupt */
     49 #define	IPL_VM		5	/* memory allocation */
     50 #define	IPL_SCHED	6	/* clock interrupt */
     51 #define	IPL_HIGH	7	/* everything */
     52 
     53 #define	NIPL		8
     54 
     55 /* Interrupt sharing types. */
     56 #define	IST_NONE	0	/* none */
     57 #define	IST_PULSE	1	/* pulsed */
     58 #define	IST_EDGE	2	/* edge-triggered */
     59 #define	IST_LEVEL	3	/* level-triggered */
     60 
     61 #define	__NEWINTR	/* enables new hooks in cpu_fork()/cpu_switch() */
     62 
     63 #define ARM_IRQ_HANDLER	_C_LABEL(epoc32_irq_handler)
     64 
     65 #ifndef _LOCORE
     66 
     67 #include <sys/queue.h>
     68 
     69 #define PIC_MAXSOURCES		16
     70 #define PIC_MAXMAXSOURCES	16
     71 
     72 #define	_splraise	pic_splraise
     73 #define	_spllower	pic_spllower
     74 #define	splx		pic_splx
     75 
     76 #include <arm/pic/picvar.h>
     77 
     78 typedef uint8_t ipl_t;
     79 typedef struct {
     80 	ipl_t _ipl;
     81 } ipl_cookie_t;
     82 
     83 static inline ipl_cookie_t
     84 makeiplcookie(ipl_t ipl)
     85 {
     86 
     87 	return (ipl_cookie_t){._ipl = ipl};
     88 }
     89 
     90 static inline int
     91 splraiseipl(ipl_cookie_t icookie)
     92 {
     93 
     94 	return _splraise(icookie._ipl);
     95 }
     96 
     97 #define	spl0()		_spllower(IPL_NONE)
     98 
     99 #include <sys/spl.h>
    100 
    101 #endif /* ! _LOCORE */
    102 
    103 #endif /* _KERNEL */
    104 
    105 #endif	/* _EPOC32_INTR_H_ */
    106