106 lines
3.3 KiB
C
106 lines
3.3 KiB
C
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/* $NetBSD: softintr.h,v 1.1 2002/01/29 22:54:14 thorpej Exp $ */
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/*
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* Copyright (c) 2001 Wasabi Systems, Inc.
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* All rights reserved.
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*
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* Written by Jason R. Thorpe for Wasabi Systems, Inc.
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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 for the NetBSD Project by
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* Wasabi Systems, Inc.
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* 4. The name of Wasabi Systems, Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
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* 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 WASABI SYSTEMS, INC
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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 _ARM_SOFTINTR_H_
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#define _ARM_SOFTINTR_H_
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#ifdef _KERNEL
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/*
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* Generic software interrupt support for all ARM platforms.
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*
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* To use this code, include <arm/softintr.h> from your platform's
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* <machine/intr.h>.
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*/
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#define SI_SOFT 0 /* for IPL_SOFT */
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#define SI_SOFTCLOCK 1 /* for IPL_SOFTCLOCK */
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#define SI_SOFTNET 2 /* for IPL_SOFTNET */
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#define SI_SOFTSERIAL 3 /* for IPL_SOFTSERIAL */
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#define SI_NQUEUES 4
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#define SI_QUEUENAMES { \
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"generic", \
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"clock", \
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"net", \
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"serial", \
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}
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struct soft_intrhand {
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TAILQ_ENTRY(soft_intrhand) sih_list;
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void (*sih_func)(void *);
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void *sih_arg;
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struct soft_intrq *sih_siq;
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int sih_pending;
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};
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struct soft_intrq {
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TAILQ_HEAD(, soft_intrhand) siq_list;
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struct evcnt siq_evcnt;
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int siq_si;
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};
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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_init(void);
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void softintr_dispatch(int);
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#define softintr_schedule(arg) \
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do { \
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struct soft_intrhand *__sih = (arg); \
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struct soft_intrq *__siq = __sih->sih_siq; \
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int __s; \
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\
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__s = splhigh(); \
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if (__sih->sih_pending == 0) { \
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TAILQ_INSERT_TAIL(&__siq->siq_list, __sih, sih_list); \
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__sih->sih_pending = 1; \
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_setsoftintr(__siq->siq_si); \
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} \
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splx(__s); \
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} while (/*CONSTCOND*/0)
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/* XXX For legacy software interrupts. */
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extern struct soft_intrhand *softnet_intrhand;
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#define setsoftnet() softintr_schedule(softnet_intrhand)
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#endif /* _KERNEL */
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#endif /* _ARM_SOFTINTR_H_ */
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