/* $OpenBSD: intr.h,v 1.17 2007/07/29 21:24:05 miod Exp $ */ /* $NetBSD: intr.h,v 1.9 1998/08/12 06:58:42 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_ #include <machine/psl.h> #ifdef _KERNEL /* * splnet must block hardware network interrupts * splvm must be > spltty */ extern u_short mac68k_ttyipl; extern u_short mac68k_netipl; extern u_short mac68k_vmipl; extern u_short mac68k_audioipl; extern u_short mac68k_clockipl; extern u_short mac68k_statclockipl; /* * 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 #define IPL_SOFTNET 1 #define IPL_SOFTCLOCK 1 #define IPL_BIO 2 #define IPL_NET PSLTOIPL(mac68k_netipl) #define IPL_TTY PSLTOIPL(mac68k_ttyipl) #define IPL_CLOCK PSLTOIPL(mac68k_clockipl) #define IPL_STATCLOCK PSLTOIPL(mac68k_statclockipl) #define IPL_HIGH 7 /* * 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 splsoft() _splraise(PSL_S | PSL_IPL1) #define splsoftclock() splsoft() #define splsoftnet() splsoft() #define spltty() _splraise(mac68k_ttyipl) #define splbio() _splraise(PSL_S | PSL_IPL2) #define splnet() _splraise(mac68k_netipl) #define splvm() _splraise(mac68k_vmipl) #define splaudio() _splraise(mac68k_audioipl) #define splclock() _splraise(mac68k_clockipl) #define splstatclock() _splraise(mac68k_statclockipl) #define splserial() _splraise(PSL_S | PSL_IPL4) #define splhigh() _spl(PSL_S | PSL_IPL7) #define splsched() splhigh() /* These spl calls are _not_ to be used by machine-independent code. */ #define spladb() splhigh() #define splzs() splserial() /* 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_ADB 0x08 #define siron(mask) \ __asm __volatile ( "orb %1,%0" : "=m" (ssir) : "i" (mask)) #define siroff(mask) \ __asm __volatile ( "andb %1,%0" : "=m" (ssir) : "ir" (~(mask))) #define setsoftnet() siron(SIR_NET) #define setsoftclock() siron(SIR_CLOCK) #define setsoftserial() siron(SIR_SERIAL) #define setsoftadb() siron(SIR_ADB) /* intr.c */ void intr_init(void); void intr_establish(int (*)(void *), void *, int, const char *); void intr_disestablish(int); void intr_dispatch(int); /* locore.s */ int spl0(void); /* * Interrupt handler. * There is no support for shared interrupts at the moment. */ #include <sys/evcount.h> struct intrhand { int (*ih_fn)(void *); void *ih_arg; int ih_ipl; struct evcount ih_count; }; #endif /* _KERNEL */ #endif /* _MAC68K_INTR_H_ */