120 lines
3.2 KiB
C
120 lines
3.2 KiB
C
/* $NetBSD: intr.h,v 1.15 2009/05/08 09:33:58 skrll Exp $ */
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/*-
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* Copyright (c) 1998, 2001, 2002 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Charles M. Hannum, and by Jason R. Thorpe, and by Matthew Fredette.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND 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 THE FOUNDATION OR CONTRIBUTORS
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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 _HP700_INTR_H_
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#define _HP700_INTR_H_
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#include <machine/psl.h>
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/* Interrupt priority `levels'. */
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#define IPL_NONE 7 /* nothing */
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#define IPL_SOFTCLOCK 6 /* timeouts */
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#define IPL_SOFTBIO 5 /* block I/o */
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#define IPL_SOFTNET 4 /* protocol stacks */
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#define IPL_SOFTSERIAL 3 /* serial */
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#define IPL_VM 2 /* memory allocation, low I/O */
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#define IPL_SCHED 1 /* clock, medium I/O */
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#define IPL_HIGH 0 /* everything */
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#define NIPL 8
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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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#ifndef _LOCORE
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/* The priority level masks. */
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extern int imask[NIPL];
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/* The current priority level. */
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extern volatile int cpl;
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/* The asynchronous system trap flag. */
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extern volatile int astpending;
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/* The softnet mask. */
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extern int softnetmask;
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/*
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* Add a mask to cpl, and return the old value of cpl.
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*/
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static __inline int
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splraise(register int ncpl)
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{
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register int ocpl = cpl;
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cpl = ocpl | ncpl;
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__insn_barrier();
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return (ocpl);
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}
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/* spllower() is in locore.S */
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void spllower(int);
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/*
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* Miscellaneous
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*/
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#define spl0() spllower(0)
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#define splx(x) spllower(x)
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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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return splraise(imask[icookie._ipl]);
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}
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#include <sys/spl.h>
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#define setsoftast() (astpending = 1)
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#define setsoftnet() hp700_intr_schedule(softnetmask)
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void hp700_intr_schedule(int);
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#endif /* !_LOCORE */
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#endif /* !_HP700_INTR_H_ */
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