118 lines
4.2 KiB
C
118 lines
4.2 KiB
C
|
/* $NetBSD: intr.h,v 1.1 2001/05/28 21:06:19 chs Exp $ */
|
||
|
|
|
||
|
|
/*-
|
||
|
|
* Copyright (c) 1996 The NetBSD Foundation, Inc.
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
||
|
|
* by Gordon W. Ross.
|
||
|
|
*
|
||
|
|
* 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 _SUN3_INTR_H_
|
||
|
|
#define _SUN3_INTR_H_ 1
|
||
|
|
|
||
|
|
#include <machine/psl.h>
|
||
|
|
|
||
|
|
/*
|
||
|
|
* These are identical to the values used by hp300, but are not meaningful
|
||
|
|
* to sun3 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 */
|
||
|
|
|
||
|
|
#if defined(_KERNEL) && !defined(_LOCORE)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Define inline functions for PSL manipulation.
|
||
|
|
* These are as close to macros as one can get.
|
||
|
|
* When not optimizing gcc will call the locore.s
|
||
|
|
* functions by the same names, so breakpoints on
|
||
|
|
* these functions will work normally, etc.
|
||
|
|
* (See the GCC extensions info document.)
|
||
|
|
*/
|
||
|
|
|
||
|
|
static __inline int _getsr __P((void));
|
||
|
|
|
||
|
|
/* Get current sr value. */
|
||
|
|
static __inline int
|
||
|
|
_getsr(void)
|
||
|
|
{
|
||
|
|
int rv;
|
||
|
|
|
||
|
|
__asm __volatile ("clrl %0; movew %%sr,%0" : "&=d" (rv));
|
||
|
|
return (rv);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The rest of this is sun3 specific, because other ports may
|
||
|
|
* need to do special things in spl0() (i.e. simulate SIR).
|
||
|
|
* Suns have a REAL interrupt register, so spl0() and splx(s)
|
||
|
|
* have no need to check for any simulated interrupts, etc.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#define spl0() _spl0() /* we have real software interrupts */
|
||
|
|
#define splx(x) _spl(x)
|
||
|
|
|
||
|
|
/* IPL used by soft interrupts: netintr(), softclock() */
|
||
|
|
#define spllowersoftclock() spl1()
|
||
|
|
#define splsoftclock() splraise1()
|
||
|
|
#define splsoftnet() splraise1()
|
||
|
|
|
||
|
|
/* Highest block device (strategy) IPL. */
|
||
|
|
#define splbio() splraise2()
|
||
|
|
|
||
|
|
/* Highest network interface IPL. */
|
||
|
|
#define splnet() splraise3()
|
||
|
|
|
||
|
|
/* Highest tty device IPL. */
|
||
|
|
#define spltty() splraise4()
|
||
|
|
|
||
|
|
/* Highest network, tty, or disk IPL. */
|
||
|
|
#define splvm() _splraise(PSL_S|PSL_IPL4)
|
||
|
|
|
||
|
|
/* Intersil clock hardware interrupts (hard-wired at 5) */
|
||
|
|
#define splclock() splraise5()
|
||
|
|
#define splstatclock() splclock()
|
||
|
|
|
||
|
|
/* Block out all interrupts (except NMI of course). */
|
||
|
|
#define splhigh() spl7()
|
||
|
|
#define splsched() spl7()
|
||
|
|
#define spllock() spl7()
|
||
|
|
|
||
|
|
#endif /* KERNEL && !_LOCORE */
|
||
|
|
#endif /* _SUN3_INTR_H_ */
|