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/* $OpenBSD: intr.h,v 1.1 2006/10/06 21:02:55 miod Exp $ */
/* $NetBSD: intr.h,v 1.22 2006/01/24 23:51:42 uwe Exp $ */
/*-
* Copyright (c) 2002 The NetBSD Foundation, Inc.
* All rights reserved.
*
* 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 by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 THE FOUNDATION OR CONTRIBUTORS
* 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 _SH_INTR_H_
#define _SH_INTR_H_
#ifdef _KERNEL
#include <sys/device.h>
#include <sys/evcount.h>
#include <sys/lock.h>
#include <sys/queue.h>
#include <sh/psl.h>
/* Interrupt sharing types. */
#define IST_NONE 0 /* none */
#define IST_PULSE 1 /* pulsed */
#define IST_EDGE 2 /* edge-triggered */
#define IST_LEVEL 3 /* level-triggered */
/* Interrupt priority levels */
#define _IPL_N 15
#define _IPL_NSOFT 4
#define IPL_NONE 0 /* nothing */
#define IPL_SOFT 1
#define IPL_SOFTCLOCK 2 /* timeouts */
#define IPL_SOFTNET 3 /* protocol stacks */
#define IPL_SOFTSERIAL 4 /* serial */
#define IPL_SOFTNAMES { \
"misc", \
"clock", \
"net", \
"serial", \
}
struct intc_intrhand {
int (*ih_func)(void *);
void *ih_arg;
int ih_level; /* SR.I[0:3] value */
int ih_evtcode; /* INTEVT or INTEVT2(SH7709/SH7709A) */
int ih_idx; /* evtcode -> intrhand mapping */
struct evcount ih_count;
};
/* from 0x200 by 0x20 -> from 0 by 1 */
#define EVTCODE_TO_MAP_INDEX(x) (((x) >> 5) - 0x10)
#define EVTCODE_TO_IH_INDEX(x) \
__intc_evtcode_to_ih[EVTCODE_TO_MAP_INDEX(x)]
#define EVTCODE_IH(x) (&__intc_intrhand[EVTCODE_TO_IH_INDEX(x)])
extern int8_t __intc_evtcode_to_ih[];
extern struct intc_intrhand __intc_intrhand[];
void intc_init(void);
void *intc_intr_establish(int, int, int, int (*)(void *), void *, const char *);
void intc_intr_disestablish(void *);
void intc_intr_enable(int);
void intc_intr_disable(int);
void intc_intr(int, int, int);
void intpri_intr_priority(int evtcode, int level);
/*
* software simulated interrupt
*/
struct sh_soft_intrhand {
TAILQ_ENTRY(sh_soft_intrhand) sih_q;
struct sh_soft_intr *sih_intrhead;
void (*sih_fn)(void *);
void *sih_arg;
int sih_pending;
};
struct sh_soft_intr {
TAILQ_HEAD(, sh_soft_intrhand) softintr_q;
struct evcnt softintr_evcnt;
struct simplelock softintr_slock;
unsigned long softintr_ipl;
};
#define softintr_schedule(arg) \
do { \
struct sh_soft_intrhand *__sih = (arg); \
struct sh_soft_intr *__si = __sih->sih_intrhead; \
int __s; \
\
__s = _cpu_intr_suspend(); \
simple_lock(&__si->softintr_slock); \
if (__sih->sih_pending == 0) { \
TAILQ_INSERT_TAIL(&__si->softintr_q, __sih, sih_q); \
__sih->sih_pending = 1; \
setsoft(__si->softintr_ipl); \
} \
simple_unlock(&__si->softintr_slock); \
_cpu_intr_resume(__s); \
} while (/*CONSTCOND*/0)
void softintr_init(void);
void *softintr_establish(int, void (*)(void *), void *);
void softintr_disestablish(void *);
void softintr_dispatch(int);
void setsoft(int);
/* XXX For legacy software interrupts. */
extern struct sh_soft_intrhand *softnet_intrhand;
#define setsoftnet() softintr_schedule(softnet_intrhand)
#endif /* _KERNEL */
#endif /* !_SH_INTR_H_ */
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