NetBSD/sys/arch/mvme68k/include/intr.h

147 lines
5.0 KiB
C

/* $NetBSD: intr.h,v 1.5 2000/09/19 19:31:34 scw Exp $ */
/*-
* Copyright (c) 2000 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe and Steve C. Woodford.
*
* 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 _MVME68K_INTR_H
#define _MVME68K_INTR_H
#include <sys/device.h>
#include <sys/queue.h>
#include <machine/psl.h>
/*
* These are identical to the values used by hp300, but are not meaningful
* to mvme68k code at this time.
*/
#define IPL_NONE 0 /* disable only this interrupt */
#define IPL_BIO 1 /* disable block I/O interrupts */
#define IPL_NET 2 /* disable network interrupts */
#define IPL_TTY 3 /* disable terminal interrupts */
#define IPL_TTYNOBUF 4 /* IPL_TTY + higher ISR priority */
#define IPL_SERIAL 4 /* disable serial interrupts */
#define IPL_CLOCK 5 /* disable clock interrupts */
#define IPL_HIGH 6 /* disable all interrupts */
/* Copied from alpha/include/intr.h */
#define IPL_SOFTSERIAL 0 /* serial software interrupts */
#define IPL_SOFTNET 1 /* network software interrupts */
#define IPL_SOFTCLOCK 2 /* clock software interrupts */
#define IPL_SOFT 3 /* other software interrupts */
#define IPL_NSOFT 4
#define IPL_SOFTNAMES { \
"serial", \
"net", \
"clock", \
"misc", \
}
#ifdef _KERNEL
/* spl0 requires checking for software interrupts */
#define spllowersoftclock() spl1()
#define splsoft() splraise1()
#define splsoftclock() splsoft()
#define splsoftnet() splsoft()
#define splsoftserial() splsoft()
#define splbio() splraise2()
#define splnet() splraise3()
#define spltty() splraise3()
#define splimp() splraise3()
#define splserial() splraise4()
#define splclock() splraise5()
#define splstatclock() splraise5()
#define splvm() splraise5()
#define splhigh() spl7()
#define splsched() spl7()
#define spllock() spl7()
/* watch out for side effects */
#define splx(s) (s & PSL_IPL ? _spl(s) : spl0())
#ifndef _LOCORE
/*
* Simulated software interrupt register
* This is cleared to zero to indicate a soft interrupt is pending
* (Yes, it's a bit bizarre, but it allows the use of the m68k's `tas'
* instruction so we can avoid masking interrupts elsewhere.)
*/
extern volatile unsigned char ssir;
#define setsoft(x) x = 0
#define __GENERIC_SOFT_INTERRUPTS
struct mvme68k_soft_intrhand {
LIST_ENTRY(mvme68k_soft_intrhand) sih_q;
struct mvme68k_soft_intr *sih_intrhead;
void (*sih_fn)(void *);
void *sih_arg;
volatile int sih_pending;
};
struct mvme68k_soft_intr {
LIST_HEAD(, mvme68k_soft_intrhand) msi_q;
struct evcnt msi_evcnt;
volatile unsigned char msi_ssir;
};
void *softintr_establish(int, void (*)(void *), void *);
void softintr_disestablish(void *);
void softintr_init(void);
void softintr_dispatch(void);
#define softintr_schedule(arg) \
do { \
struct mvme68k_soft_intrhand *__sih = (arg); \
__sih->sih_pending = 1; \
setsoft(__sih->sih_intrhead->msi_ssir); \
setsoft(ssir); \
} while (0)
/* XXX For legacy software interrupts */
extern struct mvme68k_soft_intrhand *softnet_intrhand;
extern struct mvme68k_soft_intrhand *softclock_intrhand;
#define setsoftnet() softintr_schedule(softnet_intrhand)
#define setsoftclock() softintr_schedule(softclock_intrhand)
extern int spl0 __P((void));
#endif /* !_LOCORE */
#endif /* _KERNEL */
#endif /* _MVME68K_INTR_H */