106 lines
3.3 KiB
C
106 lines
3.3 KiB
C
/* $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
|
|
|
|
/*
|
|
* Generic software interrupt support for all ARM platforms.
|
|
*
|
|
* To use this code, include <arm/softintr.h> from your platform's
|
|
* <machine/intr.h>.
|
|
*/
|
|
|
|
#define SI_SOFT 0 /* for IPL_SOFT */
|
|
#define SI_SOFTCLOCK 1 /* for IPL_SOFTCLOCK */
|
|
#define SI_SOFTNET 2 /* for IPL_SOFTNET */
|
|
#define SI_SOFTSERIAL 3 /* for IPL_SOFTSERIAL */
|
|
|
|
#define SI_NQUEUES 4
|
|
|
|
#define SI_QUEUENAMES { \
|
|
"generic", \
|
|
"clock", \
|
|
"net", \
|
|
"serial", \
|
|
}
|
|
|
|
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;
|
|
struct evcnt siq_evcnt;
|
|
int siq_si;
|
|
};
|
|
|
|
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; \
|
|
int __s; \
|
|
\
|
|
__s = splhigh(); \
|
|
if (__sih->sih_pending == 0) { \
|
|
TAILQ_INSERT_TAIL(&__siq->siq_list, __sih, sih_list); \
|
|
__sih->sih_pending = 1; \
|
|
_setsoftintr(__siq->siq_si); \
|
|
} \
|
|
splx(__s); \
|
|
} while (/*CONSTCOND*/0)
|
|
|
|
/* XXX For legacy software interrupts. */
|
|
extern struct soft_intrhand *softnet_intrhand;
|
|
|
|
#define setsoftnet() softintr_schedule(softnet_intrhand)
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* _ARM_SOFTINTR_H_ */
|