153 lines
4.1 KiB
C
153 lines
4.1 KiB
C
/* $NetBSD: intr.h,v 1.9 2008/04/27 18:58:47 matt Exp $ */
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/*
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* Copyright (c) 2001, 2003 Wasabi Systems, Inc.
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* All rights reserved.
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*
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* Written by Jason R. Thorpe for Wasabi Systems, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed for the NetBSD Project by
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* Wasabi Systems, Inc.
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* 4. The name of Wasabi Systems, Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _IYONIX_INTR_H_
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#define _IYONIX_INTR_H_
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#ifdef _KERNEL
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/* Interrupt priority "levels". */
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#define IPL_NONE 0 /* nothing */
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#define IPL_SOFTCLOCK 1 /* software clock interrupt */
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#define IPL_SOFTBIO 2 /* generic software interrupts */
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#define IPL_SOFTNET 3 /* software network interrupt */
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#define IPL_SOFTSERIAL 4 /* software serial interrupt */
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#define IPL_VM 5 /* memory allocation */
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#define IPL_SCHED 6 /* scheduler */
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#define IPL_HIGH 6 /* everything */
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#define NIPL 7
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/* Interrupt sharing types. */
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#define IST_NONE 0 /* none */
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#define IST_PULSE 1 /* pulsed */
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#define IST_EDGE 2 /* edge-triggered */
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#define IST_LEVEL 3 /* level-triggered */
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#define IST_LEVEL_LOW IST_LEVEL
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#define IST_LEVEL_HIGH 4
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#define IST_EDGE_FALLING IST_EDGE
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#define IST_EDGE_RISING 5
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#define IST_EDGE_BOTH 6
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#define __NEWINTR /* enables new hooks in cpu_fork()/cpu_switch() */
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#ifndef _LOCORE
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#if defined(_LKM)
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int _splraise(int);
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int _spllower(int);
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void splx(int);
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#else /* _LKM */
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#include "opt_arm_intr_impl.h"
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#if defined(ARM_INTR_IMPL)
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/*
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* Each board needs to define the following functions:
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*
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* int _splraise(int);
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* int _spllower(int);
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* void splx(int);
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* void _setsoftintr(int);
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*
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* These may be defined as functions, static inline functions, or macros,
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* but there must be a _spllower() and splx() defined as functions callable
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* from assembly language (for cpu_switch()). However, since it's quite
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* useful to be able to inline splx(), you could do something like the
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* following:
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*
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* in <boardtype>_intr.h:
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* static inline int
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* boardtype_splx(int spl)
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* {...}
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*
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* #define splx(nspl) boardtype_splx(nspl)
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* ...
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* and in boardtype's machdep code:
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*
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* ...
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* #undef splx
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* int
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* splx(int spl)
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* {
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* return boardtype_splx(spl);
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* }
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*/
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#include ARM_INTR_IMPL
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#else /* ARM_INTR_IMPL */
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#error ARM_INTR_IMPL not defined.
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#endif /* ARM_INTR_IMPL */
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#endif /* _LKM */
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typedef uint8_t ipl_t;
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typedef struct {
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ipl_t _ipl;
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} ipl_cookie_t;
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static inline ipl_cookie_t
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makeiplcookie(ipl_t ipl)
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{
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return (ipl_cookie_t){._ipl = ipl};
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}
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static inline int
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splraiseipl(ipl_cookie_t icookie)
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{
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return _splraise(icookie._ipl);
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}
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#define spl0() _spllower(IPL_NONE)
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#include <sys/spl.h>
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#endif /* ! _LOCORE */
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#endif /* _KERNEL */
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#endif /* _IYONIX_INTR_H_ */
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