/* $NetBSD: intr.h,v 1.12 2007/12/03 15:33:02 ad Exp $ */ /*- * Copyright (c) 1998, 2000 Ben Harris * 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. */ /* * intr.h - Interrupt stuff for the consumption of MI code. * * arm26-specific functions are in irq.h */ #ifndef _ARM26_INTR_H_ #define _ARM26_INTR_H_ /* * These are the different SPL states * * Each state has an interrupt mask associated with it which * indicate which interrupts are allowed. */ #define IPL_NONE 0 #define IPL_SOFTCLOCK 1 #define IPL_SOFTNET 2 #define IPL_SOFTBIO IPL_SOFTNET #define IPL_SOFTSERIAL IPL_SOFTNET #define IPL_VM 3 #define IPL_SCHED 4 #define IPL_HIGH 4 #define NIPL IPL_HIGH + 1 #if defined(_KERNEL) && !defined(_LOCORE) #define splsoftnet() raisespl(IPL_SOFTNET) #define splsoftbio() splsoftnet() #define splsoftserial() splsoftnet() #define splsoftclock() raisespl(IPL_SOFTCLOCK) #define splvm() raisespl(IPL_VM) #define splsched() splhigh() #define spl0() lowerspl(IPL_NONE) #define splx(s) lowerspl(s) extern int splhigh(void); extern int raisespl(int); extern void lowerspl(int); extern int hardsplx(int); typedef uint8_t ipl_t; typedef struct { ipl_t _ipl; } ipl_cookie_t; static inline ipl_cookie_t makeiplcookie(ipl_t ipl) { return (ipl_cookie_t){._ipl = ipl}; } static inline int splraiseipl(ipl_cookie_t icookie) { ipl_t newipl = icookie._ipl; return ((newipl) == IPL_HIGH) ? splhigh() : raisespl(newipl); } /* * Interrupt sharing types * (not currently used on arm26) */ #define IST_UNUSABLE -1 /* interrupt cannot be used */ #define IST_NONE 0 /* none (dummy) */ #define IST_PULSE 1 /* pulsed */ #define IST_EDGE 2 /* edge-triggered */ #define IST_LEVEL 3 /* level-triggered */ #endif /* _KERNEL && !ASSEMBLER */ #endif