/* $NetBSD: intr.h,v 1.8 2001/04/13 23:29:58 thorpej Exp $ */ /*- * Copyright (c) 1997 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Ignatios Souvatzis. * * 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 FOUNDATION 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. */ /* * machine/intr.h for the Amiga port. * Currently, only a wrapper, for most of the stuff, around the old * include files. */ #ifndef _MACHINE_INTR_H_ #define _MACHINE_INTR_H_ #include #include /* ADAM: commented out #define IPL_SOFTSERIAL 1 #define IPL_SOFTNET 1 */ #ifdef splaudio #undef splaudio #define splaudio spl6 #endif #define spllpt() spl6() /* ADAM: from macppc/intr.h */ /* Interrupt priority `levels'. */ #define IPL_NONE 9 /* nothing */ #define IPL_SOFTCLOCK 8 /* timeouts */ #define IPL_SOFTNET 7 /* protocol stacks */ #define IPL_BIO 6 /* block I/O */ #define IPL_NET 5 /* network */ #define IPL_SOFTSERIAL 4 /* serial */ #define IPL_TTY 3 /* terminal */ #define IPL_IMP 3 /* memory allocation */ #define IPL_AUDIO 2 /* audio */ #define IPL_CLOCK 1 /* clock */ #define IPL_HIGH 1 /* everything */ #define IPL_SERIAL 0 /* serial */ #define NIPL 10 /* Interrupt sharing types. */ #define IST_NONE 0 /* none */ #define IST_PULSE 1 /* pulsed */ #define IST_EDGE 2 /* edge-triggered */ #define IST_LEVEL 3 /* level-triggered */ #ifndef _LOCORE /* * Interrupt handler chains. intr_establish() inserts a handler into * the list. The handler is called with its (single) argument. */ struct intrhand { int (*ih_fun) __P((void *)); void *ih_arg; u_long ih_count; struct intrhand *ih_next; int ih_level; int ih_irq; }; void clearsoftclock __P((void)); int splsoftclock __P((void)); /* void setsoftnet __P((void)); */ void clearsoftnet __P((void)); int splsoftnet __P((void)); void do_pending_int __P((void)); static __inline int splraise __P((int)); static __inline int spllower __P((int)); static __inline void splx __P((int)); static __inline void softintr __P((int)); extern volatile int cpl, ipending, astpending, tickspending; extern int imask[]; /* * Reorder protection in the following inline functions is * achived with the "eieio" instruction which the assembler * seems to detect and then doen't move instructions past.... */ static __inline int splraise(ncpl) int ncpl; { int ocpl; __asm__ volatile("sync; eieio\n"); /* don't reorder.... */ ocpl = cpl; cpl = ocpl | ncpl; __asm__ volatile("sync; eieio\n"); /* reorder protect */ return (ocpl); } static __inline void splx(ncpl) int ncpl; { __asm__ volatile("sync; eieio\n"); /* reorder protect */ cpl = ncpl; if (ipending & ~ncpl) do_pending_int(); __asm__ volatile("sync; eieio\n"); /* reorder protect */ } static __inline int spllower(ncpl) int ncpl; { int ocpl; __asm__ volatile("sync; eieio\n"); /* reorder protect */ ocpl = cpl; cpl = ncpl; if (ipending & ~ncpl) do_pending_int(); __asm__ volatile("sync; eieio\n"); /* reorder protect */ return (ocpl); } /* Following code should be implemented with lwarx/stwcx to avoid * the disable/enable. i need to read the manual once more.... */ static __inline void softintr(ipl) int ipl; { int msrsave; __asm__ volatile("mfmsr %0" : "=r"(msrsave)); __asm__ volatile("mtmsr %0" :: "r"(msrsave & ~PSL_EE)); ipending |= 1 << ipl; __asm__ volatile("mtmsr %0" :: "r"(msrsave)); } #define ICU_LEN 32 /* Soft interrupt masks. */ /* #define SIR_CLOCK 28 #define SIR_NET 29 #define SIR_SERIAL 30 */ #define SPL_CLOCK 31 /* * Hardware interrupt masks */ #define splbio() splraise(imask[IPL_BIO]) #define splnet() splraise(imask[IPL_NET]) #define spltty() splraise(imask[IPL_TTY]) #define splaudio() splraise(imask[IPL_AUDIO]) #define splclock() splraise(imask[IPL_CLOCK]) #define splstatclock() splclock() #define splserial() splraise(imask[IPL_SERIAL]) /* ADAM: see above #define spllpt() spltty() */ /* * Software interrupt masks * * NOTE: splsoftclock() is used by hardclock() to lower the priority from * clock to softclock before it calls softclock(). */ #define spllowersoftclock() spllower(imask[IPL_SOFTCLOCK]) #define splsoftclock() splraise(imask[IPL_SOFTCLOCK]) #define splsoftnet() splraise(imask[IPL_SOFTNET]) #define splsoftserial() splraise(imask[IPL_SOFTSERIAL]) /* * Miscellaneous */ #define splvm() splraise(imask[IPL_IMP]) #define splhigh() splraise(imask[IPL_HIGH]) #define splsched() splhigh() #define spllock() splhigh() #define spl0() spllower(0) /* #define setsoftnet() softintr(SIR_NET) #define setsoftserial() softintr(SIR_SERIAL) */ extern long intrcnt[]; #define CNT_IRQ0 0 #define CNT_CLOCK 64 #define CNT_SOFTCLOCK 65 #define CNT_SOFTNET 66 #define CNT_SOFTSERIAL 67 #endif /* !_LOCORE */ #endif /* !_MACPPC_INTR_H_ */