135 lines
3.4 KiB
C
135 lines
3.4 KiB
C
/* $NetBSD: kern_softint.c,v 1.3 2007/10/08 20:06:19 ad Exp $ */
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/*-
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* Copyright (c) 2007 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 Andrew Doran.
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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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/*
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* Stub for code to be merged from the vmlocking CVS branch.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: kern_softint.c,v 1.3 2007/10/08 20:06:19 ad Exp $");
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#include <sys/param.h>
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#include <sys/intr.h>
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u_int softint_timing;
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/*
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* softint_init:
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*
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* Initialize per-CPU data structures. Called from mi_cpu_attach().
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*/
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void
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softint_init(struct cpu_info *ci)
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{
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/* nothing yet */
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}
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/*
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* softint_establish:
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*
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* Register a software interrupt handler.
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*/
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void *
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softint_establish(u_int flags, void (*func)(void *), void *arg)
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{
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u_int level;
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level = (flags & SOFTINT_LVLMASK);
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KASSERT(level < SOFTINT_COUNT);
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switch (level) {
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case SOFTINT_CLOCK:
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level = IPL_SOFTCLOCK;
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break;
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case SOFTINT_NET:
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case SOFTINT_BIO:
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level = IPL_SOFTNET;
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break;
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case SOFTINT_SERIAL:
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#ifdef IPL_SOFTSERIAL
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level = IPL_SOFTSERIAL;
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#else
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level = IPL_SOFTNET;
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#endif
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break;
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default:
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panic("softint_establish");
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}
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return softintr_establish(level, func, arg);
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}
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/*
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* softint_disestablish:
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*
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* Unregister a software interrupt handler.
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*/
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void
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softint_disestablish(void *arg)
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{
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softintr_disestablish(arg);
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}
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/*
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* softint_schedule:
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*
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* Trigger a software interrupt. Must be called from a hardware
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* interrupt handler, or with preemption disabled (since we are
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* using the value of curcpu()).
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*/
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void
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softint_schedule(void *arg)
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{
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softintr_schedule(arg);
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}
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/*
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* softint_block:
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*
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* Update statistics when the soft interrupt blocks.
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*/
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void
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softint_block(lwp_t *l)
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{
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/* nothing yet */
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}
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