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/* $OpenBSD: intr.h,v 1.4 2000/07/06 15:25:03 ho Exp $ */
/* $NetBSD: intr.h,v 1.2 1997/07/24 05:43:08 scottr Exp $ */
/*-
* Copyright (c) 1996, 1997 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe.
*
* 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 REGENTS 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 _HP300_INTR_H_
#define _HP300_INTR_H_
#include <machine/psl.h>
#ifdef _HP300_INTR_H_PRIVATE
#include <sys/queue.h>
/*
* The location and size of the autovectored interrupt portion
* of the vector table.
*/
#define ISRLOC 0x18
#define NISR 8
struct isr {
LIST_ENTRY(isr) isr_link;
int (*isr_func) __P((void *));
void *isr_arg;
int isr_ipl;
int isr_priority;
};
#endif /* _HP300_INTR_H_PRIVATE */
/*
* Interrupt "levels". These are a more abstract representation
* of interrupt levels, and do not have the same meaning as m68k
* CPU interrupt levels. They serve two purposes:
*
* - properly order ISRs in the list for that CPU ipl
* - compute CPU PSL values for the spl*() calls.
*/
#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_CLOCK 5 /* disable clock interrupts */
#define IPL_HIGH 6 /* disable all interrupts */
/*
* Convert PSL values to CPU IPLs and vice-versa.
*/
#define PSLTOIPL(x) (((x) >> 8) & 0xf)
#define IPLTOPSL(x) ((((x) & 0xf) << 8) | PSL_S)
#ifdef _KERNEL
/*
* spl functions; all but spl0 are done in-line
*/
#define _spl(s) \
({ \
register int _spl_r; \
\
__asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : \
"=&d" (_spl_r) : "di" (s)); \
_spl_r; \
})
#define _splraise(s) \
({ \
int _spl_r; \
\
__asm __volatile (" \
clrl d0 ; \
movw sr,d0 ; \
movl d0,%0 ; \
andw #0x700,d0 ; \
movw %1,d1 ; \
andw #0x700,d1 ; \
cmpw d0,d1 ; \
jle 1f ; \
movw %1,sr ; \
1:" : \
"=&d" (_spl_r) : \
"di" (s) : \
"d0", "d1"); \
_spl_r; \
})
/* spl0 requires checking for software interrupts */
#define spl1() _spl(PSL_S|PSL_IPL1)
#define spl2() _spl(PSL_S|PSL_IPL2)
#define spl3() _spl(PSL_S|PSL_IPL3)
#define spl4() _spl(PSL_S|PSL_IPL4)
#define spl5() _spl(PSL_S|PSL_IPL5)
#define spl6() _spl(PSL_S|PSL_IPL6)
#define spl7() _spl(PSL_S|PSL_IPL7)
/*
* These four globals contain the appropriate PSL_S|PSL_IPL? values
* to raise interupt priority to the requested level.
*/
extern unsigned short hp300_bioipl;
extern unsigned short hp300_netipl;
extern unsigned short hp300_ttyipl;
extern unsigned short hp300_impipl;
/* These spl calls are _not_ to be used by machine-independent code. */
#define splhil() _splraise(PSL_S|PSL_IPL1)
#define splkbd() splhil()
#define splsoft() spl1()
/* These spl calls are used by machine-independent code. */
#define spllowersoftclock() splsoft()
#define splsoftclock() splsoft()
#define splsoftnet() splsoft()
#define splbio() _splraise(hp300_bioipl)
#define splnet() _splraise(hp300_netipl)
#define spltty() _splraise(hp300_ttyipl)
#define splimp() _splraise(hp300_impipl)
#define splclock() spl6()
#define splstatclock() spl6()
#define splvm() spl6()
#define splhigh() spl7()
#define splsched() spl7()
/* watch out for side effects */
#define splx(s) ((s) & PSL_IPL ? _spl((s)) : spl0())
/*
* Simulated software interrupt register.
*/
extern volatile u_int8_t ssir;
#define SIR_NET 0x01
#define SIR_CLOCK 0x02
#define siron(mask) \
__asm __volatile ( "orb %0,_ssir" : : "i" ((mask)))
#define siroff(mask) \
__asm __volatile ( "andb %0,_ssir" : : "ir" (~(mask)));
#define setsoftnet() siron(SIR_NET)
#define setsoftclock() siron(SIR_CLOCK)
/* locore.s */
int spl0 __P((void));
/* intr.c */
void intr_init __P((void));
void *intr_establish __P((int (*)(void *), void *, int, int));
void intr_disestablish __P((void *));
void intr_dispatch __P((int));
void intr_printlevels __P((void));
#endif /* _KERNEL */
#endif /* _HP300_INTR_H_ */
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