Annotation of sys/arch/arm/include/softintr.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: softintr.h,v 1.2 2007/05/10 17:59:24 deraadt Exp $ */
! 2: /* $NetBSD: softintr.h,v 1.1 2002/01/29 22:54:14 thorpej Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 2001 Wasabi Systems, Inc.
! 6: * All rights reserved.
! 7: *
! 8: * Written by Jason R. Thorpe for Wasabi Systems, Inc.
! 9: *
! 10: * Redistribution and use in source and binary forms, with or without
! 11: * modification, are permitted provided that the following conditions
! 12: * are met:
! 13: * 1. Redistributions of source code must retain the above copyright
! 14: * notice, this list of conditions and the following disclaimer.
! 15: * 2. Redistributions in binary form must reproduce the above copyright
! 16: * notice, this list of conditions and the following disclaimer in the
! 17: * documentation and/or other materials provided with the distribution.
! 18: * 3. All advertising materials mentioning features or use of this software
! 19: * must display the following acknowledgement:
! 20: * This product includes software developed for the NetBSD Project by
! 21: * Wasabi Systems, Inc.
! 22: * 4. The name of Wasabi Systems, Inc. may not be used to endorse
! 23: * or promote products derived from this software without specific prior
! 24: * written permission.
! 25: *
! 26: * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
! 27: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! 28: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! 29: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
! 30: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 31: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 32: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 33: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 34: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 35: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 36: * POSSIBILITY OF SUCH DAMAGE.
! 37: */
! 38:
! 39: #ifndef _ARM_SOFTINTR_H_
! 40: #define _ARM_SOFTINTR_H_
! 41:
! 42: #ifdef _KERNEL
! 43:
! 44: /*
! 45: * Generic software interrupt support for all ARM platforms.
! 46: *
! 47: * To use this code, include <arm/softintr.h> from your platform's
! 48: * <machine/intr.h>.
! 49: */
! 50:
! 51: #define SI_SOFT 0 /* for IPL_SOFT */
! 52: #define SI_SOFTCLOCK 1 /* for IPL_SOFTCLOCK */
! 53: #define SI_SOFTNET 2 /* for IPL_SOFTNET */
! 54: #define SI_SOFTSERIAL 3 /* for IPL_SOFTSERIAL */
! 55:
! 56: #define SI_NQUEUES 4
! 57:
! 58: #define SI_QUEUENAMES { \
! 59: "generic", \
! 60: "clock", \
! 61: "net", \
! 62: "serial", \
! 63: }
! 64:
! 65: struct soft_intrhand {
! 66: TAILQ_ENTRY(soft_intrhand) sih_list;
! 67: void (*sih_func)(void *);
! 68: void *sih_arg;
! 69: struct soft_intrq *sih_siq;
! 70: int sih_pending;
! 71: };
! 72:
! 73: struct soft_intrq {
! 74: TAILQ_HEAD(, soft_intrhand) siq_list;
! 75: int siq_si;
! 76: };
! 77:
! 78: void *softintr_establish(int, void (*)(void *), void *);
! 79: void softintr_disestablish(void *);
! 80: void softintr_init(void);
! 81: void softintr_dispatch(int);
! 82:
! 83: #define softintr_schedule(arg) \
! 84: do { \
! 85: struct soft_intrhand *__sih = (arg); \
! 86: struct soft_intrq *__siq = __sih->sih_siq; \
! 87: int __s; \
! 88: \
! 89: __s = splhigh(); \
! 90: if (__sih->sih_pending == 0) { \
! 91: TAILQ_INSERT_TAIL(&__siq->siq_list, __sih, sih_list); \
! 92: __sih->sih_pending = 1; \
! 93: _setsoftintr(__siq->siq_si); \
! 94: } \
! 95: splx(__s); \
! 96: } while (/*CONSTCOND*/0)
! 97:
! 98: /* XXX For legacy software interrupts. */
! 99: extern struct soft_intrhand *softnet_intrhand;
! 100:
! 101: #define setsoftnet() softintr_schedule(softnet_intrhand)
! 102:
! 103: #endif /* _KERNEL */
! 104:
! 105: #endif /* _ARM_SOFTINTR_H_ */
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