165 lines
5.2 KiB
C
165 lines
5.2 KiB
C
/* $NetBSD: intr.h,v 1.3 2002/01/02 12:36:21 uch Exp $ */
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/*-
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* Copyright (c) 2001 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe, UCHIYAMA Yasushi.
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _PLAYSTATION2_INTR_H_
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#define _PLAYSTATION2_INTR_H_
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#ifdef _KERNEL
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#include <sys/device.h>
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#include <sys/lock.h>
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#include <sys/queue.h>
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/* Interrupt sharing types. */
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#define IST_NONE 0 /* none */
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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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/* Interrupt priority levels */
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#define IPL_NONE 0 /* nothing */
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#define IPL_SOFT 1 /* generic */
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#define IPL_SOFTCLOCK 2 /* timeouts */
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#define IPL_SOFTNET 3 /* protocol stacks */
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#define IPL_SOFTSERIAL 4 /* serial */
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#define IPL_BIO 5 /* block I/O */
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#define IPL_NET 6 /* network */
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#define IPL_TTY 7 /* terminal */
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#define IPL_SERIAL 7 /* serial */
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#define IPL_CLOCK 8 /* clock */
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#define IPL_HIGH 8 /* everything */
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#define _IPL_NSOFT 4
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#define _IPL_N 9
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#define IPL_SOFTNAMES { \
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"misc", \
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"clock", \
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"net", \
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"serial", \
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}
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/*
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* Hardware interrupt masks
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*/
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extern u_int32_t __icu_mask[_IPL_N];
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#define splbio() splraise(__icu_mask[IPL_BIO])
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#define splnet() splraise(__icu_mask[IPL_NET])
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#define spltty() splraise(__icu_mask[IPL_TTY])
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#define splserial() splraise(__icu_mask[IPL_SERIAL])
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#define splclock() splraise(__icu_mask[IPL_CLOCK])
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#define splstatclock() splclock()
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#define splvm() spltty()
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/*
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* Software interrupt masks
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*/
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#define splsoft() splraise(__icu_mask[IPL_SOFT])
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#define splsoftclock() splraise(__icu_mask[IPL_SOFTCLOCK])
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#define splsoftnet() splraise(__icu_mask[IPL_SOFTNET])
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#define splsoftserial() splraise(__icu_mask[IPL_SOFTSERIAL])
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#define spllowersoftclock() splset(__icu_mask[IPL_SOFTCLOCK])
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void spllowersofthigh(void);
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/*
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* Miscellaneous
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*/
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#define splx(s) splset(s)
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#define splhigh() splraise(__icu_mask[IPL_HIGH])
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#define splsched() splhigh()
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#define spllock() splhigh()
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/*
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* software simulated interrupt
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*/
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struct playstation2_soft_intrhand {
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TAILQ_ENTRY(playstation2_soft_intrhand) sih_q;
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struct playstation2_soft_intr *sih_intrhead;
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void (*sih_fn)(void *);
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void *sih_arg;
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int sih_pending;
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};
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struct playstation2_soft_intr {
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TAILQ_HEAD(, playstation2_soft_intrhand) softintr_q;
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struct evcnt softintr_evcnt;
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struct simplelock softintr_slock;
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unsigned long softintr_ipl;
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};
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#define softintr_schedule(arg) \
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do { \
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struct playstation2_soft_intrhand *__sih = (arg); \
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struct playstation2_soft_intr *__si = __sih->sih_intrhead; \
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int __s; \
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\
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__s = _intr_suspend(); \
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simple_lock(&__si->softintr_slock); \
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if (__sih->sih_pending == 0) { \
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TAILQ_INSERT_TAIL(&__si->softintr_q, __sih, sih_q); \
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__sih->sih_pending = 1; \
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setsoft(__si->softintr_ipl); \
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} \
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simple_unlock(&__si->softintr_slock); \
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_intr_resume(__s); \
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} while (0)
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void *softintr_establish(int, void (*)(void *), void *);
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void softintr_disestablish(void *);
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void setsoft(int);
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/* XXX For legacy software interrupts. */
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extern struct playstation2_soft_intrhand *softnet_intrhand;
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#define setsoftnet() softintr_schedule(softnet_intrhand)
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extern int splraise(int);
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extern void splset(int);
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extern void spl0(void);
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extern int _splset(int);
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/* R5900 EI/DI instruction */
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extern int _intr_suspend(void);
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extern void _intr_resume(int);
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#endif /* _KERNEL */
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#endif /* _PLAYSTATION2_INTR_H_ */
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