139 lines
4.0 KiB
C
139 lines
4.0 KiB
C
/* $NetBSD: intr.h,v 1.10 2007/02/16 02:53:43 ad Exp $ */
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/*-
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* Copyright (c) 1998, 2000 Ben Harris
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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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/*
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* intr.h - Interrupt stuff for the consumption of MI code.
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*
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* arm26-specific functions are in irq.h
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*/
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#ifndef _ARM26_INTR_H_
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#define _ARM26_INTR_H_
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/*
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* These are the different SPL states
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*
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* Each state has an interrupt mask associated with it which
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* indicate which interrupts are allowed.
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*/
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#define IPL_NONE 0
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#define IPL_SOFTCLOCK 1
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#define IPL_SOFTNET 2
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#define IPL_SOFTSERIAL IPL_SOFTNET
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#define IPL_BIO 3
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#define IPL_NET 4
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#define IPL_TTY 5
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#define IPL_LPT IPL_TTY
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#define IPL_VM 6
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#define IPL_AUDIO 7
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#define IPL_SERIAL 8
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#define IPL_CLOCK 9
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#define IPL_HIGH 10
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#define IPL_STATCLOCK IPL_HIGH
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#define IPL_SCHED IPL_HIGH
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#define IPL_LOCK IPL_HIGH
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#define NIPL IPL_HIGH + 1
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#if defined(_KERNEL) && !defined(_LOCORE)
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#define splsoftnet() raisespl(IPL_SOFTNET)
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#define splsoft() splsoftnet()
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#define splsoftserial() splsoftnet()
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#define splsoftclock() raisespl(IPL_SOFTCLOCK)
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#define splbio() raisespl(IPL_BIO)
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#define splnet() raisespl(IPL_NET)
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#define spltty() raisespl(IPL_TTY)
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#define spllpt() raisespl(IPL_LPT)
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#define splvm() raisespl(IPL_VM)
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#define splaudio() raisespl(IPL_AUDIO)
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#define splserial() raisespl(IPL_SERIAL)
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#define splclock() raisespl(IPL_CLOCK)
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#define splstatclock() splhigh()
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#define splsched() splhigh()
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#define spllock() splhigh()
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#define spl0() lowerspl(IPL_NONE)
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#define splx(s) lowerspl(s)
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extern int splhigh(void);
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extern int raisespl(int);
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extern void lowerspl(int);
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extern int hardsplx(int);
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typedef int 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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ipl_t newipl = icookie._ipl;
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return ((newipl) == IPL_HIGH) ? splhigh() : raisespl(newipl);
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}
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/*
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* Interrupt sharing types
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* (not currently used on arm26)
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*/
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#define IST_UNUSABLE -1 /* interrupt cannot be used */
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#define IST_NONE 0 /* none (dummy) */
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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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/*
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* Soft Interrupts
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*/
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/* New-fangled generic soft interrupts */
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extern void *softintr_establish(int, void (*)(void *), void *);
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extern void softintr_disestablish(void *);
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extern void softintr_schedule(void *);
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/* Old-fashioned soft interrupts */
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extern void *sh_softnet;
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#define setsoftnet() softintr_schedule(sh_softnet)
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/* Machine-dependent soft-interrupt servicing routines */
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extern void softintr_init(void);
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extern void dosoftints(int);
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#endif /* _KERNEL && !ASSEMBLER */
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#endif
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