NetBSD-5.0.2/sys/arch/mac68k/obio/asc.c
/* $NetBSD: asc.c,v 1.53 2008/06/15 10:29:18 tsutsui Exp $ */
/*
* Copyright (C) 1997 Scott Reynolds
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*-
* Copyright (C) 1993 Allen K. Briggs, Chris P. Caputo,
* Michael L. Finch, Bradley A. Grantham, and
* Lawrence A. Kesteloot
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the Alice Group.
* 4. The names of the Alice Group or any of its members may not be used
* to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE ALICE GROUP ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE ALICE GROUP BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* ASC driver code and console bell support
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: asc.c,v 1.53 2008/06/15 10:29:18 tsutsui Exp $");
#include <sys/types.h>
#include <sys/errno.h>
#include <sys/time.h>
#include <sys/systm.h>
#include <sys/param.h>
#include <sys/device.h>
#include <sys/conf.h>
#include <uvm/uvm_extern.h>
#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>
#define MAC68K_ASC_BASE 0x50f14000
#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(void *, int, int, int);
static void asc_stop_bell(void *);
#if __notyet__
static void asc_intr_enable(void);
static void asc_intr(void *);
#endif
static int ascmatch(struct device *, struct cfdata *, void *);
static void ascattach(struct device *, struct device *, void *);
CFATTACH_DECL(asc, sizeof(struct asc_softc),
ascmatch, ascattach, NULL, NULL);
extern struct cfdriver asc_cd;
dev_type_open(ascopen);
dev_type_close(ascclose);
dev_type_read(ascread);
dev_type_write(ascwrite);
dev_type_ioctl(ascioctl);
dev_type_mmap(ascmmap);
const struct cdevsw asc_cdevsw = {
ascopen, ascclose, ascread, ascwrite, ascioctl,
nostop, notty, nopoll, ascmmap, nokqfilter,
};
static int
ascmatch(struct device *parent, struct cfdata *cf, void *aux)
{
struct obio_attach_args *oa = (struct obio_attach_args *)aux;
bus_addr_t addr;
bus_space_handle_t bsh;
int rval = 0;
if (oa->oa_addr != (-1))
addr = (bus_addr_t)oa->oa_addr;
else if (current_mac_model->machineid == MACH_MACTV)
return 0;
else if (current_mac_model->machineid == MACH_MACIIFX)
addr = (bus_addr_t)MAC68K_IIFX_ASC_BASE;
else
addr = (bus_addr_t)MAC68K_ASC_BASE;
if (bus_space_map(oa->oa_tag, addr, MAC68K_ASC_LEN, 0, &bsh))
return (0);
if (mac68k_bus_space_probe(oa->oa_tag, bsh, 0, 1))
rval = 1;
else
rval = 0;
bus_space_unmap(oa->oa_tag, bsh, MAC68K_ASC_LEN);
return rval;
}
static void
ascattach(struct device *parent, struct device *self, void *aux)
{
struct asc_softc *sc = (struct asc_softc *)self;
struct obio_attach_args *oa = (struct obio_attach_args *)aux;
bus_addr_t addr;
int i;
sc->sc_tag = oa->oa_tag;
if (oa->oa_addr != (-1))
addr = (bus_addr_t)oa->oa_addr;
else if (current_mac_model->machineid == MACH_MACIIFX)
addr = (bus_addr_t)MAC68K_IIFX_ASC_BASE;
else
addr = (bus_addr_t)MAC68K_ASC_BASE;
if (bus_space_map(sc->sc_tag, addr, MAC68K_ASC_LEN, 0,
&sc->sc_handle)) {
printf(": can't map memory space\n");
return;
}
sc->sc_open = 0;
sc->sc_ringing = 0;
callout_init(&sc->sc_bell_ch, 0);
for (i = 0; i < 256; i++) { /* up part of wave, four voices? */
asc_wave_tab[i] = i / 4;
asc_wave_tab[i + 512] = i / 4;
asc_wave_tab[i + 1024] = i / 4;
asc_wave_tab[i + 1536] = i / 4;
}
for (i = 0; i < 256; i++) { /* down part of wave, four voices? */
asc_wave_tab[i + 256] = 0x3f - (i / 4);
asc_wave_tab[i + 768] = 0x3f - (i / 4);
asc_wave_tab[i + 1280] = 0x3f - (i / 4);
asc_wave_tab[i + 1792] = 0x3f - (i / 4);
}
printf(": Apple Sound Chip");
if (oa->oa_addr != (-1))
printf(" at %x", oa->oa_addr);
printf("\n");
mac68k_set_bell_callback(asc_ring_bell, sc);
#if __notyet__
if (mac68k_machine.aux_interrupts) {
intr_establish((int (*)(void *))asc_intr, sc, 5);
} else {
via2_register_irq(VIA2_ASC, asc_intr, sc);
}
asc_intr_enable();
#endif
}
int
ascopen(dev_t dev, int flag, int mode, struct lwp *l)
{
struct asc_softc *sc;
sc = device_lookup_private(&asc_cd, ASCUNIT(dev));
if (sc == NULL)
return (ENXIO);
if (sc->sc_open)
return (EBUSY);
sc->sc_open = 1;
return (0);
}
int
ascclose(dev_t dev, int flag, int mode, struct lwp *l)
{
struct asc_softc *sc;
sc = device_lookup_private(&asc_cd, ASCUNIT(dev));
sc->sc_open = 0;
return (0);
}
int
ascread(dev_t dev, struct uio *uio, int ioflag)
{
return (ENXIO);
}
int
ascwrite(dev_t dev, struct uio *uio, int ioflag)
{
return (ENXIO);
}
int
ascioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l)
{
struct asc_softc *sc;
int error;
int unit = ASCUNIT(dev);
sc = device_lookup_private(&asc_cd, unit);
error = 0;
switch (cmd) {
default:
error = EINVAL;
break;
}
return (error);
}
paddr_t
ascmmap(dev_t dev, off_t off, int prot)
{
struct asc_softc *sc;
paddr_t pa;
sc = device_lookup_private(&asc_cd, ASCUNIT(dev));
if ((u_int)off < MAC68K_ASC_LEN) {
(void) pmap_extract(pmap_kernel(), (vaddr_t)sc->sc_handle.base,
&pa);
return m68k_btop(pa + off);
}
return (-1);
}
static int
asc_ring_bell(void *arg, int freq, int length, int volume)
{
struct asc_softc *sc = (struct asc_softc *)arg;
unsigned long cfreq;
int i;
if (!sc)
return (ENODEV);
if (sc->sc_ringing == 0) {
bus_space_write_multi_1(sc->sc_tag, sc->sc_handle,
0, 0, 0x800);
bus_space_write_region_1(sc->sc_tag, sc->sc_handle,
0, asc_wave_tab, 0x800);
/* Fix this. Need to find exact ASC sampling freq */
cfreq = 65536 * freq / 466;
/* printf("beep: from %d, %02x %02x %02x %02x\n",
* cur_beep.freq, (cfreq >> 24) & 0xff, (cfreq >> 16) & 0xff,
* (cfreq >> 8) & 0xff, (cfreq) & 0xff); */
for (i = 0; i < 8; i++) {
bus_space_write_1(sc->sc_tag, sc->sc_handle,
0x814 + 8 * i, (cfreq >> 24) & 0xff);
bus_space_write_1(sc->sc_tag, sc->sc_handle,
0x815 + 8 * i, (cfreq >> 16) & 0xff);
bus_space_write_1(sc->sc_tag, sc->sc_handle,
0x816 + 8 * i, (cfreq >> 8) & 0xff);
bus_space_write_1(sc->sc_tag, sc->sc_handle,
0x817 + 8 * i, (cfreq) & 0xff);
} /* frequency; should put cur_beep.freq in here
* somewhere. */
bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x807, 3); /* 44 ? */
bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x806,
255 * volume / 100);
bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x805, 0);
bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x80f, 0);
bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x802, 2); /* sampled */
bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x801, 2); /* enable sampled */
sc->sc_ringing = 1;
callout_reset(&sc->sc_bell_ch, length, asc_stop_bell, sc);
}
return (0);
}
static void
asc_stop_bell(void *arg)
{
struct asc_softc *sc = (struct asc_softc *)arg;
if (!sc)
return;
if (sc->sc_ringing > 1000 || sc->sc_ringing < 0)
panic("bell got out of sync?");
if (--sc->sc_ringing == 0) /* disable ASC */
bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x801, 0);
}
#if __notyet__
static void
asc_intr_enable(void)
{
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(void *arg)
{
#ifdef ASC_DEBUG
struct asc_softc *sc = (struct asc_softc *)arg;
if (asc_debug)
printf("asc_intr(%p)\n", sc);
#endif
}
#endif