/* $NetBSD: intr.h,v 1.31.112.1 2023/08/09 17:42:03 martin 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 #if defined(_KERNEL) || defined(_KMEMUSER) typedef struct { uint16_t _ipl; } ipl_cookie_t; #endif #ifdef _KERNEL /* spl0 requires checking for software interrupts */ #define IPL_NONE 0 #define IPL_SOFTCLOCK 1 #define IPL_SOFTBIO 2 #define IPL_SOFTNET 3 #define IPL_SOFTSERIAL 4 #define IPL_VM 5 #define IPL_SCHED 6 #define IPL_HIGH 7 #define NIPL 8 /* * This array contains the appropriate PSL_S|PSL_IPL? values * to raise interrupt priority to the requested level. */ extern uint16_t ipl2psl_table[NIPL]; /* These spl calls are _not_ to be used by machine-independent code. */ #define splzs() splserial() /* * These should be used for: * 1) ensuring mutual exclusion (why use processor level?) * 2) allowing faster devices to take priority */ /* watch out for side effects */ #define splx(s) ((s) & PSL_IPL ? _spl(s) : spl0()) typedef int ipl_t; static inline ipl_cookie_t makeiplcookie(ipl_t ipl) { return (ipl_cookie_t){._ipl = ipl}; } static inline int splraiseipl(ipl_cookie_t icookie) { return _splraise(ipl2psl_table[icookie._ipl]); } #include /* intr.c */ void intr_init(void); void intr_establish(int (*)(void *), void *, int); void intr_disestablish(int); void intr_dispatch(int); /* locore.s */ int spl0(void); #endif /* _KERNEL */ #endif /* _MAC68K_INTR_H_ */