136 lines
4.4 KiB
C
136 lines
4.4 KiB
C
/* $NetBSD: intr.h,v 1.19 2003/11/04 03:13:48 uwe Exp $ */
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/*-
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* Copyright (c) 2002 The NetBSD Foundation, Inc.
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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. 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 the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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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 _SH3_INTR_H_
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#define _SH3_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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#include <sh3/psl.h>
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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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/* Interrupt priority levels */
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#define _IPL_N 15
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#define _IPL_NSOFT 4
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#define IPL_NONE 0 /* nothing */
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#define IPL_SOFT 1
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#define IPL_SOFTCLOCK 2 /* timeouts */
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#define IPL_SOFTNET 3 /* protocol stacks */
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#define IPL_SOFTSERIAL 4 /* serial */
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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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struct intc_intrhand {
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int (*ih_func)(void *);
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void *ih_arg;
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int ih_level; /* SR.I[0:3] value */
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int ih_evtcode; /* INTEVT or INTEVT2(SH7709/SH7709A) */
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int ih_idx; /* evtcode -> intrhand mapping */
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};
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#define EVTCODE_TO_MAP_INDEX(x) (((x) - 0x200) >> 5)
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#define EVTCODE_TO_IH_INDEX(x) \
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__intc_evtcode_to_ih[EVTCODE_TO_MAP_INDEX(x)]
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#define EVTCODE_IH(x) (&__intc_intrhand[EVTCODE_TO_IH_INDEX(x)])
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extern int8_t __intc_evtcode_to_ih[];
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extern struct intc_intrhand __intc_intrhand[];
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void intc_init(void);
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void *intc_intr_establish(int, int, int, int (*)(void *), void *);
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void intc_intr_disestablish(void *);
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void intc_intr_enable(int);
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void intc_intr_disable(int);
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void intc_intr(int, int, int);
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/*
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* software simulated interrupt
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*/
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struct sh_soft_intrhand {
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TAILQ_ENTRY(sh_soft_intrhand) sih_q;
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struct sh_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 sh_soft_intr {
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TAILQ_HEAD(, sh_soft_intrhand) 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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#define softintr_schedule(arg) \
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do { \
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struct sh_soft_intrhand *__sih = (arg); \
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struct sh_soft_intr *__si = __sih->sih_intrhead; \
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int __s; \
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\
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__s = _cpu_intr_suspend(); \
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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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_cpu_intr_resume(__s); \
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} while (/*CONSTCOND*/0)
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void softintr_init(void);
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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(int);
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void setsoft(int);
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/* XXX For legacy software interrupts. */
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extern struct sh_soft_intrhand *softnet_intrhand;
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#define setsoftnet() softintr_schedule(softnet_intrhand)
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#endif /* !_SH3_INTR_H_ */
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