145 lines
4.4 KiB
C
145 lines
4.4 KiB
C
/* $NetBSD: intr.h,v 1.8 1997/11/07 07:33:18 scottr Exp $ */
|
|
|
|
/*
|
|
* Copyright (C) 1997 Scott Reynolds
|
|
* 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. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 _MAC68K_INTR_H_
|
|
#define _MAC68K_INTR_H_
|
|
|
|
#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 spl calls are _not_ to be used by machine-independent code. */
|
|
#define spladb() splhigh()
|
|
#define splzs() splserial()
|
|
#define splsoft() spl1()
|
|
|
|
/*
|
|
* splnet must block hardware network interrupts
|
|
* splimp must be > spltty
|
|
*/
|
|
extern unsigned short mac68k_ttyipl;
|
|
extern unsigned short mac68k_bioipl;
|
|
extern unsigned short mac68k_netipl;
|
|
extern unsigned short mac68k_impipl;
|
|
extern unsigned short mac68k_clockipl;
|
|
extern unsigned short mac68k_statclockipl;
|
|
extern unsigned short mac68k_schedipl;
|
|
|
|
/*
|
|
* These should be used for:
|
|
* 1) ensuring mutual exclusion (why use processor level?)
|
|
* 2) allowing faster devices to take priority
|
|
*
|
|
* Note that on the Mac, most things are masked at spl1, almost
|
|
* everything at spl2, and everything but the panic switch and
|
|
* power at spl4.
|
|
*/
|
|
#define splsoftclock() splsoft()
|
|
#define splsoftnet() splsoft()
|
|
#define spltty() _splraise(mac68k_ttyipl)
|
|
#define splbio() _splraise(mac68k_bioipl)
|
|
#define splnet() _splraise(mac68k_netipl)
|
|
#define splimp() _splraise(mac68k_impipl)
|
|
#define splclock() _splraise(mac68k_clockipl)
|
|
#define splstatclock() _splraise(mac68k_statclockipl)
|
|
#define splsched() _splsched(mac68k_schedipl)
|
|
#define splserial() spl4()
|
|
#define splhigh() 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 SIR_SERIAL 0x04
|
|
#define SIR_DTMGR 0x08
|
|
#define SIR_ADB 0x10
|
|
|
|
#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)
|
|
#define setsoftserial() siron(SIR_SERIAL)
|
|
#define setsoftdtmgr() siron(SIR_DTMGR)
|
|
#define setsoftadb() siron(SIR_ADB)
|
|
|
|
/* locore.s */
|
|
int spl0 __P((void));
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* _MAC68K_INTR_H_ */
|