173 lines
5.5 KiB
C
173 lines
5.5 KiB
C
/* $NetBSD: intr.h,v 1.16 2002/05/15 15:19:54 uch Exp $ */
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/*
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* Copyright (c) 1998 Jonathan Stone. 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. 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 by Jonathan Stone for
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* the NetBSD Project.
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* 4. 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 _HPCMIPS_INTR_H_
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#define _HPCMIPS_INTR_H_
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#include <sys/device.h>
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#include <sys/lock.h>
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#include <sys/queue.h>
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#define IPL_NONE 0 /* disable only this interrupt */
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#define IPL_SOFT 1 /* generic software interrupts (SI 0) */
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#define IPL_SOFTCLOCK 2 /* clock software interrupts (SI 0) */
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#define IPL_SOFTNET 3 /* network software interrupts (SI 1) */
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#define IPL_SOFTSERIAL 4 /* serial software interrupts (SI 1) */
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#define IPL_BIO 5 /* disable block I/O interrupts */
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#define IPL_NET 6 /* disable network interrupts */
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#define IPL_TTY 7 /* disable terminal interrupts */
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#define IPL_SERIAL 7 /* disable serial hardware interrupts */
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#define IPL_CLOCK 8 /* disable clock interrupts */
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#define IPL_STATCLOCK 8 /* disable profiling interrupts */
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#define IPL_HIGH 8 /* disable all interrupts */
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#define _IPL_NSOFT 4
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#define _IPL_N 9
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#define _IPL_SI0_FIRST IPL_SOFT
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#define _IPL_SI0_LAST IPL_SOFTCLOCK
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#define _IPL_SI1_FIRST IPL_SOFTNET
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#define _IPL_SI1_LAST IPL_SOFTSERIAL
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#define IPL_SOFTNAMES { \
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"misc", \
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"clock", \
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"net", \
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"serial", \
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}
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/* Interrupt sharing types. */
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#define IST_UNUSABLE -1 /* interrupt cannot be used */
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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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#ifdef _KERNEL
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#ifndef _LOCORE
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#include <mips/cpuregs.h>
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extern const u_int32_t *ipl_sr_bits;
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extern const u_int32_t ipl_si_to_sr[_IPL_NSOFT];
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void intr_init(void);
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int _splraise(int);
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int _spllower(int);
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int _splset(int);
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int _splget(void);
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void _splnone(void);
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void _setsoftintr(int);
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void _clrsoftintr(int);
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#define splhigh() _splraise(ipl_sr_bits[IPL_HIGH])
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#define spl0() (void) _spllower(0)
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#define splx(s) (void) _splset(s)
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#define splbio() _splraise(ipl_sr_bits[IPL_BIO])
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#define splnet() _splraise(ipl_sr_bits[IPL_NET])
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#define spltty() _splraise(ipl_sr_bits[IPL_TTY])
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#define splserial() _splraise(ipl_sr_bits[IPL_SERIAL])
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#define splvm() spltty()
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#define splclock() _splraise(ipl_sr_bits[IPL_CLOCK])
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#define splstatclock() splclock()
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#define splsched() splclock()
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#define spllock() splhigh()
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#define spllpt() spltty()
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#define splsoft() _splraise(ipl_sr_bits[IPL_SOFT])
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#define splsoftclock() _splraise(ipl_sr_bits[IPL_SOFTCLOCK])
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#define splsoftnet() _splraise(ipl_sr_bits[IPL_SOFTNET])
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#define splsoftserial() _splraise(ipl_sr_bits[IPL_SOFTSERIAL])
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#define spllowersoftclock() _spllower(ipl_sr_bits[IPL_SOFTCLOCK])
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/*
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* software simulated interrupt
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*/
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#define setsoft(x) \
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do { \
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_setsoftintr(ipl_si_to_sr[(x) - IPL_SOFT]); \
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} while (0)
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struct hpcmips_soft_intrhand {
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TAILQ_ENTRY(hpcmips_soft_intrhand)
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sih_q;
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struct hpcmips_soft_intr *sih_intrhead;
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void (*sih_fn)(void *);
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void *sih_arg;
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int sih_pending;
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};
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struct hpcmips_soft_intr {
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TAILQ_HEAD(, hpcmips_soft_intrhand)
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softintr_q;
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struct evcnt softintr_evcnt;
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struct simplelock softintr_slock;
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unsigned long softintr_ipl;
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};
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void softintr_init(void);
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void softintr(u_int32_t);
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void *softintr_establish(int, void (*)(void *), void *);
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void softintr_disestablish(void *);
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void softintr_dispatch(void);
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#define softintr_schedule(arg) \
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do { \
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struct hpcmips_soft_intrhand *__sih = (arg); \
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struct hpcmips_soft_intr *__si = __sih->sih_intrhead; \
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int __s; \
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\
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__s = splhigh(); \
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simple_lock(&__si->softintr_slock); \
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if (__sih->sih_pending == 0) { \
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TAILQ_INSERT_TAIL(&__si->softintr_q, __sih, sih_q); \
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__sih->sih_pending = 1; \
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setsoft(__si->softintr_ipl); \
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} \
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simple_unlock(&__si->softintr_slock); \
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splx(__s); \
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} while (0)
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/* XXX For legacy software interrupts. */
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extern struct hpcmips_soft_intrhand *softnet_intrhand;
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#define setsoftnet() softintr_schedule(softnet_intrhand)
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#endif /* !_LOCORE */
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#endif /* _KERNEL */
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#endif /* !_HPCMIPS_INTR_H_ */
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