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Initialize and enable an interrupt handler, which currently doesn't 

actually do anything.
This commit is contained in:
scottr 1998-08-15 07:42:50 +00:00
parent ccf620bfab
commit 4b02e4134c
1 changed files with 42 additions and 1 deletions
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43
sys/arch/mac68k/obio/asc.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: asc.c,v 1.27 1998/05/02 16:45:30 scottr Exp $ */
/* $NetBSD: asc.c,v 1.28 1998/08/15 07:42:50 scottr Exp $ */
/*
* Copyright (C) 1997 Scott Reynolds
@ -78,6 +78,7 @@
#include <machine/autoconf.h>
#include <machine/cpu.h>
#include <machine/bus.h>
#include <machine/viareg.h>
#include <mac68k/obio/ascvar.h>
#include <mac68k/obio/obiovar.h>
@ -86,10 +87,20 @@
#define MAC68K_IIFX_ASC_BASE 0x50f10000
#define MAC68K_ASC_LEN 0x01000
#ifdef DEBUG
#define ASC_DEBUG
#endif
#ifdef ASC_DEBUG
int asc_debug = 0; /* non-zero enables debugging output */
#endif
static u_int8_t asc_wave_tab[0x800];
static int asc_ring_bell __P((void *, int, int, int));
static void asc_stop_bell __P((void *));
static void asc_intr_enable __P((void));
static void asc_intr __P((void *));
static int ascmatch __P((struct device *, struct cfdata *, void *));
static void ascattach __P((struct device *, struct device *, void *));
@ -175,6 +186,9 @@ ascattach(parent, self, aux)
printf("\n");
mac68k_set_bell_callback(asc_ring_bell, sc);
via2_register_irq(VIA2_ASC, asc_intr, sc);
asc_intr_enable();
}
int
@ -348,3 +362,30 @@ asc_stop_bell(arg)
if (--sc->sc_ringing == 0) /* disable ASC */
bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x801, 0);
}
static void
asc_intr_enable()
{
int s;
s = splhigh();
if (VIA2 == VIA2OFF)
via2_reg(vIER) = 0x80 | V2IF_ASC;
else
via2_reg(rIER) = 0x80 | V2IF_ASC;
splx(s);
}
/*ARGSUSED*/
static void
asc_intr(arg)
void *arg;
{
#ifdef ASC_DEBUG
struct asc_softc *sc = (struct asc_softc *)arg;
if (asc_debug)
printf("asc_intr(%p)\n", sc);
#endif
}