1997-11-27 13:17:45 +03:00
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/* $NetBSD: isa_machdep.c,v 1.2 1997/11/27 10:19:25 sakamoto Exp $ */
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1997-10-14 10:47:17 +04:00
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/*-
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* Copyright (c) 1993, 1994, 1996, 1997 Charles M. Hannum. All rights reserved.
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* Copyright (c) 1991 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* William Jolitz.
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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 University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR 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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* @(#)isa.c 7.2 (Berkeley) 5/13/91
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/syslog.h>
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#include <sys/device.h>
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#include <machine/pio.h>
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#include <machine/intr.h>
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#include <dev/isa/isareg.h>
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#include <dev/isa/isavar.h>
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#include <bebox/isa/isa_machdep.h>
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#include <bebox/isa/icu.h>
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/*
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* Set up an interrupt handler to start being called.
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* XXX PRONE TO RACE CONDITIONS, UGLY, 'INTERESTING' INSERTION ALGORITHM.
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*/
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void *
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isa_intr_establish(ic, irq, type, level, ih_fun, ih_arg)
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isa_chipset_tag_t ic;
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int irq;
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int type;
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int level;
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int (*ih_fun) __P((void *));
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void *ih_arg;
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{
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1997-11-27 13:17:45 +03:00
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return (void *)intr_establish(irq, type, level, ih_fun, ih_arg);
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1997-10-14 10:47:17 +04:00
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}
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/*
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* Deregister an interrupt handler.
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*/
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void
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isa_intr_disestablish(ic, arg)
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isa_chipset_tag_t ic;
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void *arg;
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{
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1997-11-27 13:17:45 +03:00
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intr_disestablish(arg);
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1997-10-14 10:47:17 +04:00
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}
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void
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isa_attach_hook(parent, self, iba)
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struct device *parent, *self;
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struct isabus_attach_args *iba;
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{
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}
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int
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isa_intr()
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1997-10-14 10:47:17 +04:00
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{
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1997-11-27 13:17:45 +03:00
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int irq;
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1997-10-14 10:47:17 +04:00
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1997-11-27 13:17:45 +03:00
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isa_outb(IO_ICU1, 0x0c);
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irq = isa_inb(IO_ICU1) & 0x07;
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if (irq == IRQ_SLAVE) {
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isa_outb(IO_ICU2, 0x0c);
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irq = (isa_inb(IO_ICU2) & 0x07) + 8;
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1997-10-14 10:47:17 +04:00
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}
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1997-11-27 13:17:45 +03:00
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return (irq);
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}
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1997-10-14 10:47:17 +04:00
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1997-11-27 13:17:45 +03:00
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void
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isa_intr_mask(mask)
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int mask;
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{
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isa_outb(IO_ICU1 + 1, mask);
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isa_outb(IO_ICU2 + 1, mask >> 8);
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}
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1997-10-14 10:47:17 +04:00
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1997-11-27 13:17:45 +03:00
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void
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isa_intr_clr(irq)
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int irq;
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{
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if (irq < 8) {
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isa_outb(IO_ICU1, 0xe0|irq);
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} else {
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isa_outb(IO_ICU2, 0xe0|(irq - 8));
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isa_outb(IO_ICU1, 0xe0|IRQ_SLAVE);
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}
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1997-10-14 10:47:17 +04:00
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}
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