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/* $NetBSD: intr.h,v 1.28.20.1 2023/08/09 17:42:02 martin Exp $ */
/*
* Copyright (c) 2001, 2003 Wasabi Systems, Inc.
* All rights reserved.
*
* Written by Jason R. Thorpe for Wasabi Systems, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed for the NetBSD Project by
* Wasabi Systems, Inc.
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
* or promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _EVBARM_INTR_H_
#define _EVBARM_INTR_H_
#ifdef _KERNEL
/* Interrupt priority "levels". */
#define IPL_NONE 0 /* nothing */
#define IPL_SOFTCLOCK 1 /* clock */
#define IPL_SOFTBIO 2 /* block I/O */
#define IPL_SOFTNET 3 /* software network interrupt */
#define IPL_SOFTSERIAL 4 /* software serial interrupt */
#define IPL_VM 5 /* memory allocation */
#define IPL_SCHED 6 /* clock interrupt */
#define IPL_HIGH 7 /* everything */
#define NIPL 8
/* Interrupt sharing types. */
#define IST_NONE 0 /* none */
#define IST_PULSE 1 /* pulsed */
#define IST_EDGE 2 /* edge-triggered */
#define IST_LEVEL 3 /* level-triggered */
#define IST_LEVEL_LOW IST_LEVEL
#define IST_LEVEL_HIGH 4
#define IST_EDGE_FALLING IST_EDGE
#define IST_EDGE_RISING 5
#define IST_EDGE_BOTH 6
#define IST_SOFT 7
#define IST_MPSAFE 0x100 /* interrupt is MPSAFE */
#ifndef _LOCORE
#include <sys/queue.h>
typedef uint8_t ipl_t;
typedef struct {
ipl_t _ipl;
} ipl_cookie_t;
#if defined(_MODULE)
int _splraise(int);
int _spllower(int);
void splx(int);
#else /* _MODULE */
#include "opt_arm_intr_impl.h"
#if defined(ARM_INTR_IMPL)
/*
* Each board needs to define the following functions:
*
* int _splraise(int);
* int _spllower(int);
* void splx(int);
*
* These may be defined as functions, static inline functions, or macros,
* but there must be a _spllower() and splx() defined as functions callable
* from assembly language (for cpu_switch()). However, since it's quite
* useful to be able to inline splx(), you could do something like the
* following:
*
* in <boardtype>_intr.h:
* static inline int
* boardtype_splx(int spl)
* {...}
*
* #define splx(nspl) boardtype_splx(nspl)
* ...
* and in boardtype's machdep code:
*
* ...
* #undef splx
* int
* splx(int spl)
* {
* return boardtype_splx(spl);
* }
*/
#include ARM_INTR_IMPL
#else /* ARM_INTR_IMPL */
#error ARM_INTR_IMPL not defined.
#endif /* ARM_INTR_IMPL */
#endif /* _MODULE */
static inline ipl_cookie_t
makeiplcookie(ipl_t ipl)
{
return (ipl_cookie_t){._ipl = ipl};
}
static inline int
splraiseipl(ipl_cookie_t icookie)
{
return _splraise(icookie._ipl);
}
#define spl0() _spllower(IPL_NONE)
#include <sys/spl.h>
#endif /* ! _LOCORE */
#endif /* _KERNEL */
#endif /* _EVBARM_INTR_H_ */
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