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100 lines
2.8 KiB
C
100 lines
2.8 KiB
C
/* $NetBSD: intr.h,v 1.31 2008/07/17 16:13:33 tsutsui Exp $ */
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/*
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* Copyright (C) 1997 Scott Reynolds
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* All rights reserved.
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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. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _MAC68K_INTR_H_
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#define _MAC68K_INTR_H_
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#include <machine/psl.h>
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#ifdef _KERNEL
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/* spl0 requires checking for software interrupts */
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#define IPL_NONE 0
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#define IPL_SOFTCLOCK 1
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#define IPL_SOFTBIO 2
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#define IPL_SOFTNET 3
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#define IPL_SOFTSERIAL 4
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#define IPL_VM 5
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#define IPL_SCHED 6
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#define IPL_HIGH 7
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#define NIPL 8
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/*
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* This array contains the appropriate PSL_S|PSL_IPL? values
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* to raise interrupt priority to the requested level.
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*/
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extern uint16_t ipl2psl_table[NIPL];
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/* These spl calls are _not_ to be used by machine-independent code. */
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#define splzs() splserial()
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/*
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* These should be used for:
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* 1) ensuring mutual exclusion (why use processor level?)
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* 2) allowing faster devices to take priority
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*/
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/* watch out for side effects */
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#define splx(s) ((s) & PSL_IPL ? _spl(s) : spl0())
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typedef int ipl_t;
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typedef struct {
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uint16_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(ipl2psl_table[icookie._ipl]);
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}
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#include <sys/spl.h>
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/* intr.c */
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void intr_init(void);
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void intr_establish(int (*)(void *), void *, int);
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void intr_disestablish(int);
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void intr_dispatch(int);
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/* locore.s */
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int spl0(void);
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#endif /* _KERNEL */
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#endif /* _MAC68K_INTR_H_ */
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