168 lines
5.0 KiB
C
168 lines
5.0 KiB
C
/* $NetBSD: intr.h,v 1.12 2001/04/13 23:30:06 thorpej Exp $ */
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/*
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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 name of the author 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 AUTHOR ``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 AUTHOR 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 _VAX_INTR_H_
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#define _VAX_INTR_H_
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#include <sys/queue.h>
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/* Define the various Interrupt Priority Levels */
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/* Interrupt Priority Levels are not mutually exclusive. */
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/* Hardware interrupt levels are 16 (0x10) thru 31 (0x1f)
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*/
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#define IPL_HIGH 0x1f /* high -- blocks all interrupts */
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#define IPL_CLOCK 0x18 /* clock */
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#define IPL_UBA 0x17 /* unibus adapters */
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#define IPL_IMP 0x17 /* memory allocation */
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#define IPL_BIO 0x15 /* block I/O */
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#define IPL_NET 0x15 /* network */
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#define IPL_TTY 0x15 /* terminal */
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#define IPL_AUDIO 0x15 /* audio */
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#define IPL_CONSMEDIA 0x14 /* console media */
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/* Software interrupt level s are 0 (0x00) thru 15 (0x0f)
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*/
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#define IPL_SOFTDDB 0x0f /* used by DDB on VAX */
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#define IPL_SOFTSERIAL 0x0d /* soft serial */
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#define IPL_SOFTNET 0x0c /* soft network */
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#define IPL_SOFTCLOCK 0x08
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#define IPL_NONE 0x00
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#define IPL_LEVELS 32
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#define IST_UNUSABLE -1 /* interrupt cannot be used */
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#define IST_NONE 0 /* none (dummy) */
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#define IST_PULSE 1 /* pulsed */
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#define IST_EDGE 2 /* edge-triggered */
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#define IST_LEVEL 3 /* level-triggered */
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#ifdef _KERNEL
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#ifndef lint
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#define splx(reg) \
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({ \
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register int val; \
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__asm __volatile ("mfpr $0x12,%0;mtpr %1,$0x12" \
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: "=&g" (val) \
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: "g" (reg)); \
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val; \
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})
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#define _splset(reg) \
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((void)({ \
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__asm __volatile ("mtpr %0,$0x12" \
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: \
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: "g" (reg)); \
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}))
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#define _splraise(reg) \
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({ \
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register int val; \
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__asm __volatile ("mfpr $0x12,%0" \
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: "=&g" (val) \
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: ); \
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if ((reg) > val) { \
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_splset(reg); \
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} \
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val; \
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})
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#define _setsirr(reg) \
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do { \
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__asm __volatile ("mtpr %0,$0x14" \
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: \
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: "g" (reg)); \
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} while (0)
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#endif
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#define spl0() _splset(IPL_NONE) /* IPL00 */
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#define spllowersoftclock() _splset(IPL_SOFTCLOCK) /* IPL08 */
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#define splsoftclock() _splraise(IPL_SOFTCLOCK) /* IPL08 */
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#define splsoftnet() _splraise(IPL_SOFTNET) /* IPL0C */
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#define splsoftserial() _splraise(IPL_SOFTSERIAL) /* IPL0D */
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#define splddb() _splraise(IPL_SOFTDDB) /* IPL0F */
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#define splconsmedia() _splraise(IPL_CONSMEDIA) /* IPL14 */
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#define splbio() _splraise(IPL_BIO) /* IPL15 */
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#define splnet() _splraise(IPL_NET) /* IPL15 */
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#define spltty() _splraise(IPL_TTY) /* IPL15 */
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#define splvm() _splraise(IPL_IMP) /* IPL17 */
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#define splclock() _splraise(IPL_CLOCK) /* IPL18 */
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#define splhigh() _splraise(IPL_HIGH) /* IPL1F */
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#define splstatclock() splclock()
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#define splsched() splhigh()
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#define spllock() splhigh()
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/* These are better to use when playing with VAX buses */
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#define spluba() _splraise(IPL_UBA) /* IPL17 */
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#define spl4() splx(0x14)
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#define spl5() splx(0x15)
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#define spl6() splx(0x16)
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#define spl7() splx(0x17)
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/* schedule software interrupts
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*/
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#define setsoftddb() _setsirr(IPL_SOFTDDB)
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#define setsoftserial() _setsirr(IPL_SOFTSERIAL)
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#define setsoftnet() _setsirr(IPL_SOFTNET)
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#if !defined(_LOCORE)
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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_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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sh->sh_pending = 1;
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_setsirr(sh->sh_head->shd_ipl);
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}
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#endif /* _LOCORE */
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#endif /* _KERNEL */
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#endif /* _VAX_INTR_H */
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