98 lines
3.4 KiB
C
98 lines
3.4 KiB
C
/* $NetBSD: softintr.h,v 1.2 2006/12/21 15:55:23 yamt Exp $ */
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/*-
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* Copyright (c) 2000, 2001 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 Jason R. Thorpe.
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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 _MIPS_SOFTINTR_H_
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#define _MIPS_SOFTINTR_H_
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#ifndef _LOCORE
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#include <sys/device.h>
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#include <sys/lock.h>
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extern const u_int32_t mips_ipl_si_to_sr[SI_NQUEUES];
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#define setsoft(x) \
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do { \
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_setsoftintr(mips_ipl_si_to_sr[x]); \
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} while (/*CONSTCOND*/0)
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struct mips_soft_intrhand {
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TAILQ_ENTRY(mips_soft_intrhand) sih_q;
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struct mips_soft_intr *sih_intrhead;
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void (*sih_func)(void *);
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void *sih_arg;
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int sih_pending;
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};
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struct mips_soft_intr {
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TAILQ_HEAD(,mips_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_siq;
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};
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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(u_int32_t);
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#define softintr_schedule(arg) \
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do { \
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struct mips_soft_intrhand *__sih = (arg); \
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struct mips_soft_intr *__msi = __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(&__msi->softintr_slock); \
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if (__sih->sih_pending == 0) { \
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TAILQ_INSERT_TAIL(&__msi->softintr_q, __sih, sih_q); \
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__sih->sih_pending = 1; \
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setsoft(__msi->softintr_siq); \
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} \
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simple_unlock(&__msi->softintr_slock); \
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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 mips_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 /* _MIPS_SOFTINTR_H_ */
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