/* $OpenBSD: softintr.h,v 1.6 2020/08/14 16:51:09 kettenis Exp $ */ /* $NetBSD: softintr.h,v 1.1 2002/01/29 22:54:14 thorpej Exp $ */ /* * Copyright (c) 2001 Wasabi Systems, Inc. * All rights reserved. * * Written by Jason R. Thorpe for Wasabi Systems, Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed for the NetBSD Project by * Wasabi Systems, Inc. * 4. The name of Wasabi Systems, Inc. may not be used to endorse * or promote products derived from this software without specific prior * written permission. * * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #ifndef _ARM_SOFTINTR_H_ #define _ARM_SOFTINTR_H_ #ifdef _KERNEL #include /* * Generic software interrupt support. * * To use this code, include from your platform's * . */ #define SI_SOFT 0 /* for IPL_SOFT */ #define SI_SOFTCLOCK 1 /* for IPL_SOFTCLOCK */ #define SI_SOFTNET 2 /* for IPL_SOFTNET */ #define SI_SOFTTTY 3 /* for IPL_SOFTTTY */ #define SI_NQUEUES 4 struct soft_intrhand { TAILQ_ENTRY(soft_intrhand) sih_list; void (*sih_func)(void *); void *sih_arg; struct soft_intrq *sih_siq; int sih_pending; }; struct soft_intrq { TAILQ_HEAD(, soft_intrhand) siq_list; int siq_si; struct mutex siq_mtx; }; void *softintr_establish(int, void (*)(void *), void *); void softintr_disestablish(void *); void softintr_init(void); void softintr_dispatch(int); #define softintr_schedule(arg) \ do { \ struct soft_intrhand *__sih = (arg); \ struct soft_intrq *__siq = __sih->sih_siq; \ \ mtx_enter(&__siq->siq_mtx); \ if (__sih->sih_pending == 0) { \ TAILQ_INSERT_TAIL(&__siq->siq_list, __sih, sih_list); \ __sih->sih_pending = 1; \ _setsoftintr(__siq->siq_si); \ } \ mtx_leave(&__siq->siq_mtx); \ } while (/*CONSTCOND*/0) #endif /* _KERNEL */ #endif /* _ARM_SOFTINTR_H_ */