152 lines
4.6 KiB
C
152 lines
4.6 KiB
C
/* $NetBSD: intr.h,v 1.8 2006/08/07 23:29:38 tsutsui Exp $ */
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/*
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* Copyright (c) 2001 Matt Fredette.
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* Copyright (c) 1998 Matt Thomas.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the company nor the names of the authors may be used to
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* endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _SUN68K_INTR_H_
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#define _SUN68K_INTR_H_
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#include <sys/queue.h>
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#include <m68k/psl.h>
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/*
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* Interrupt levels. Right now these correspond to real
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* hardware levels, but I don't think anything counts on
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* that (yet?).
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*/
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#define _IPL_SOFT_LEVEL1 1
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#define _IPL_SOFT_LEVEL2 2
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#define _IPL_SOFT_LEVEL3 3
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#define _IPL_SOFT_LEVEL_MIN 1
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#define _IPL_SOFT_LEVEL_MAX 3
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#define IPL_NONE 0
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#define IPL_SOFT_LEVEL1 (PSL_S|PSL_IPL1)
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#define IPL_SOFT_LEVEL2 (PSL_S|PSL_IPL2)
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#define IPL_SOFT_LEVEL3 (PSL_S|PSL_IPL3)
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#define IPL_SOFTCLOCK IPL_SOFT_LEVEL1
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#define IPL_SOFTNET IPL_SOFT_LEVEL1
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#define IPL_BIO (PSL_S|PSL_IPL2)
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#define IPL_NET (PSL_S|PSL_IPL3)
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#define IPL_SOFTSERIAL IPL_SOFT_LEVEL3
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#define IPL_TTY (PSL_S|PSL_IPL4)
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#define IPL_VM (PSL_S|PSL_IPL4)
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/* Intersil or Am9513 clock hardware interrupts (hard-wired at 5) */
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#define IPL_CLOCK (PSL_S|PSL_IPL5)
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#define IPL_STATCLOCK IPL_CLOCK
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#define IPL_SCHED (PSL_S|PSL_IPL7)
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#define IPL_HIGH (PSL_S|PSL_IPL7)
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#define IPL_LOCK (PSL_S|PSL_IPL7)
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#define IPL_SERIAL (PSL_S|PSL_IPL6)
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#ifdef _KERNEL
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LIST_HEAD(sh_head, softintr_handler);
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struct softintr_head {
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int shd_ipl;
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struct sh_head shd_intrs;
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};
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struct softintr_handler {
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struct softintr_head *sh_head;
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LIST_ENTRY(softintr_handler) sh_link;
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void (*sh_func)(void *);
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void *sh_arg;
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int sh_pending;
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};
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extern void softintr_init(void);
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extern void *softintr_establish(int, void (*)(void *), void *);
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extern void softintr_disestablish(void *);
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static __inline void
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softintr_schedule(void *arg)
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{
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struct softintr_handler * const sh = arg;
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if (sh->sh_pending == 0) {
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sh->sh_pending = 1;
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isr_soft_request(sh->sh_head->shd_ipl);
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}
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}
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/* These connect interrupt handlers. */
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typedef int (*isr_func_t)(void *);
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extern void isr_add_autovect(isr_func_t, void *, int);
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extern void isr_add_vectored(isr_func_t, void *, int, int);
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extern void isr_add_custom(int, void *);
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/*
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* Define inline functions for PSL manipulation.
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* These are as close to macros as one can get.
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* When not optimizing gcc will call the locore.s
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* functions by the same names, so breakpoints on
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* these functions will work normally, etc.
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* (See the GCC extensions info document.)
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*/
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static __inline int _getsr(void);
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/* Get current sr value. */
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static __inline int
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_getsr(void)
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{
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int rv;
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__asm volatile ("clrl %0; movew %%sr,%0" : "=&d" (rv));
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return (rv);
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}
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/*
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* The rest of this is sun68k specific, because other ports may
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* need to do special things in spl0() (i.e. simulate SIR).
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* Suns have a REAL interrupt register, so spl0() and splx(s)
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* have no need to check for any simulated interrupts, etc.
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*/
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#define spl0() _spl0() /* we have real software interrupts */
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#define splx(x) _spl(x)
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/* IPL used by soft interrupts: netintr(), softclock() */
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#define spllowersoftclock() spl1()
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/* Zilog Serial hardware interrupts (hard-wired at 6) */
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#define splzs() spl6()
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/* This returns true iff the spl given is spl0. */
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#define is_spl0(s) (((s) & PSL_IPL7) == 0)
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#define splraiseipl(x) _splraise(x)
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#include <sys/spl.h>
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#endif /* _KERNEL */
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#endif /* _SUN68K_INTR_H */
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