363 lines
11 KiB
C
363 lines
11 KiB
C
/* $NetBSD: wss_isa.c,v 1.4 1998/06/09 07:25:07 thorpej Exp $ */
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/*
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* Copyright (c) 1994 John Brezak
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* Copyright (c) 1991-1993 Regents of the University of California.
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* All rights reserved.
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*
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* MAD support:
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* Copyright (c) 1996 Lennart Augustsson
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* Based on code which is
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* Copyright (c) 1994 Hannu Savolainen
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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 Computer Systems
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* Engineering Group at Lawrence Berkeley Laboratory.
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* 4. Neither the name of the University nor of the Laboratory may be used
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* to endorse or promote products derived from this software without
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* 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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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/errno.h>
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#include <sys/ioctl.h>
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#include <sys/syslog.h>
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#include <sys/device.h>
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#include <sys/proc.h>
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#include <sys/buf.h>
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#include <machine/cpu.h>
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#include <machine/intr.h>
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#include <machine/bus.h>
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#include <sys/audioio.h>
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#include <dev/audio_if.h>
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#include <dev/isa/isavar.h>
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#include <dev/isa/isadmavar.h>
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#include <dev/ic/ad1848reg.h>
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#include <dev/isa/ad1848var.h>
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#include <dev/isa/wssreg.h>
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#include <dev/isa/wssvar.h>
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#include <dev/isa/madreg.h>
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#ifdef AUDIO_DEBUG
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#define DPRINTF(x) if (wssdebug) printf x
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extern int wssdebug;
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#else
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#define DPRINTF(x)
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#endif
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static int wssfind __P((struct device *, struct wss_softc *, struct isa_attach_args *));
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static void madprobe __P((struct wss_softc *, int));
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static void madunmap __P((struct wss_softc *));
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static int detect_mad16 __P((struct wss_softc *, int));
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int wss_isa_probe __P((struct device *, struct cfdata *, void *));
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void wss_isa_attach __P((struct device *, struct device *, void *));
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struct cfattach wss_isa_ca = {
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sizeof(struct wss_softc), wss_isa_probe, wss_isa_attach
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};
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/*
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* Probe for the Microsoft Sound System hardware.
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*/
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int
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wss_isa_probe(parent, match, aux)
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struct device *parent;
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struct cfdata *match;
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void *aux;
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{
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struct wss_softc probesc, *sc = &probesc;
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bzero(sc, sizeof *sc);
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sc->sc_dev.dv_cfdata = match;
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if (wssfind(parent, sc, aux)) {
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bus_space_unmap(sc->sc_iot, sc->sc_ioh, WSS_CODEC);
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ad1848_unmap(&sc->sc_ad1848);
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madunmap(sc);
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return 1;
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} else
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/* Everything is already unmapped */
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return 0;
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}
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static int
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wssfind(parent, sc, ia)
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struct device *parent;
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struct wss_softc *sc;
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struct isa_attach_args *ia;
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{
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static u_char interrupt_bits[12] = {
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-1, -1, -1, -1, -1, -1, -1, 0x08, -1, 0x10, 0x18, 0x20
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};
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static u_char dma_bits[4] = {1, 2, 0, 3};
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sc->sc_iot = ia->ia_iot;
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if (sc->sc_dev.dv_cfdata->cf_flags & 1)
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madprobe(sc, ia->ia_iobase);
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else
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sc->mad_chip_type = MAD_NONE;
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if (!WSS_BASE_VALID(ia->ia_iobase)) {
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DPRINTF(("wss: configured iobase %x invalid\n", ia->ia_iobase));
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goto bad1;
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}
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/* Map the ports upto the AD1848 port */
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if (bus_space_map(sc->sc_iot, ia->ia_iobase, WSS_CODEC, 0, &sc->sc_ioh))
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goto bad1;
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sc->sc_ad1848.sc_iot = sc->sc_iot;
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/* Is there an ad1848 chip at (WSS iobase + WSS_CODEC)? */
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if (ad1848_mapprobe(&sc->sc_ad1848, ia->ia_iobase + WSS_CODEC) == 0)
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goto bad;
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ia->ia_iosize = WSS_NPORT;
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/* Setup WSS interrupt and DMA */
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if (!WSS_DRQ_VALID(ia->ia_drq)) {
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DPRINTF(("wss: configured dma chan %d invalid\n", ia->ia_drq));
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goto bad;
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}
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sc->wss_drq = ia->ia_drq;
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sc->wss_ic = ia->ia_ic;
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if (sc->wss_drq != DRQUNK && !isa_drq_isfree(sc->wss_ic, sc->wss_drq))
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goto bad;
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if (!WSS_IRQ_VALID(ia->ia_irq)) {
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DPRINTF(("wss: configured interrupt %d invalid\n", ia->ia_irq));
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goto bad;
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}
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sc->wss_irq = ia->ia_irq;
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if (sc->sc_ad1848.mode <= 1)
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ia->ia_drq2 = DRQUNK;
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sc->wss_recdrq =
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sc->sc_ad1848.mode > 1 && ia->ia_drq2 != DRQUNK ?
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ia->ia_drq2 : ia->ia_drq;
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if (sc->wss_recdrq != sc->wss_drq && !isa_drq_isfree(sc->wss_ic,
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sc->wss_recdrq))
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goto bad;
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/* XXX recdrq */
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bus_space_write_1(sc->sc_iot, sc->sc_ioh, WSS_CONFIG,
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(interrupt_bits[ia->ia_irq] | dma_bits[ia->ia_drq]));
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return 1;
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bad:
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bus_space_unmap(sc->sc_iot, sc->sc_ioh, WSS_CODEC);
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bad1:
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madunmap(sc);
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return 0;
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}
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/*
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* Attach hardware to driver, attach hardware driver to audio
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* pseudo-device driver .
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*/
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void
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wss_isa_attach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct wss_softc *sc = (struct wss_softc *)self;
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struct isa_attach_args *ia = (struct isa_attach_args *)aux;
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if (!wssfind(parent, sc, ia)) {
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printf("%s: wssfind failed\n", sc->sc_dev.dv_xname);
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return;
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}
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sc->wss_ic = ia->ia_ic;
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wssattach(sc);
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}
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/*
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* Copyright by Hannu Savolainen 1994
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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 are
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* met: 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer. 2.
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* 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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*/
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/*
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* Initialization code for OPTi MAD16 compatible audio chips. Including
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*
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* OPTi 82C928 MAD16 (replaced by C929)
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* OAK OTI-601D Mozart
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* OPTi 82C929 MAD16 Pro
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* OPTi 82C931
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*/
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static int
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detect_mad16(sc, chip_type)
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struct wss_softc *sc;
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int chip_type;
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{
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unsigned char tmp, tmp2;
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sc->mad_chip_type = chip_type;
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/*
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* Check that reading a register doesn't return bus float (0xff)
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* when the card is accessed using password. This may fail in case
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* the card is in low power mode. Normally at least the power saving mode
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* bit should be 0.
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*/
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if ((tmp = mad_read(sc, MC1_PORT)) == 0xff) {
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DPRINTF(("MC1_PORT returned 0xff\n"));
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return 0;
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}
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/*
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* Now check that the gate is closed on first I/O after writing
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* the password. (This is how a MAD16 compatible card works).
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*/
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if ((tmp2 = bus_space_read_1(sc->sc_iot, sc->mad_ioh, MC1_PORT)) == tmp) {
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DPRINTF(("MC1_PORT didn't close after read (0x%02x)\n", tmp2));
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return 0;
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}
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mad_write(sc, MC1_PORT, tmp ^ 0x80); /* Toggle a bit */
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/* Compare the bit */
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if ((tmp2 = mad_read(sc, MC1_PORT)) != (tmp ^ 0x80)) {
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mad_write(sc, MC1_PORT, tmp); /* Restore */
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DPRINTF(("Bit revert test failed (0x%02x, 0x%02x)\n", tmp, tmp2));
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return 0;
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}
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mad_write(sc, MC1_PORT, tmp); /* Restore */
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return 1;
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}
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static void
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madprobe(sc, iobase)
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struct wss_softc *sc;
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int iobase;
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{
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static int valid_ports[M_WSS_NPORTS] =
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{ M_WSS_PORT0, M_WSS_PORT1, M_WSS_PORT2, M_WSS_PORT3 };
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int i;
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/* Allocate bus space that the MAD chip wants */
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if (bus_space_map(sc->sc_iot, MAD_BASE, MAD_NPORT, 0, &sc->mad_ioh))
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goto bad0;
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if (bus_space_map(sc->sc_iot, MAD_REG1, MAD_LEN1, 0, &sc->mad_ioh1))
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goto bad1;
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if (bus_space_map(sc->sc_iot, MAD_REG2, MAD_LEN2, 0, &sc->mad_ioh2))
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goto bad2;
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if (bus_space_map(sc->sc_iot, MAD_REG3, MAD_LEN3, 0, &sc->mad_ioh3))
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goto bad3;
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DPRINTF(("mad: Detect using password = 0xE2\n"));
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if (!detect_mad16(sc, MAD_82C928)) {
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/* No luck. Try different model */
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DPRINTF(("mad: Detect using password = 0xE3\n"));
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if (!detect_mad16(sc, MAD_82C929))
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goto bad;
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sc->mad_chip_type = MAD_82C929;
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DPRINTF(("mad: 82C929 detected\n"));
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} else {
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sc->mad_chip_type = MAD_82C928;
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if ((mad_read(sc, MC3_PORT) & 0x03) == 0x03) {
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DPRINTF(("mad: Mozart detected\n"));
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sc->mad_chip_type = MAD_OTI601D;
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} else {
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DPRINTF(("mad: 82C928 detected?\n"));
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sc->mad_chip_type = MAD_82C928;
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}
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}
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#ifdef AUDIO_DEBUG
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if (wssdebug)
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for (i = MC1_PORT; i <= MC7_PORT; i++)
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printf("mad: port %03x = %02x\n", i, mad_read(sc, i));
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#endif
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/* Set the WSS address. */
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for (i = 0; i < M_WSS_NPORTS; i++)
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if (valid_ports[i] == iobase)
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break;
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if (i >= M_WSS_NPORTS) { /* Not a valid port */
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printf("mad: Bad WSS base address 0x%x\n", iobase);
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goto bad;
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}
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sc->mad_ioindex = i;
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/* enable WSS emulation at the I/O port, no joystick */
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mad_write(sc, MC1_PORT, M_WSS_PORT_SELECT(i) | MC1_JOYDISABLE);
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mad_write(sc, MC2_PORT, 0x03); /* ? */
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mad_write(sc, MC3_PORT, 0xf0); /* Disable SB */
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return;
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bad:
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bus_space_unmap(sc->sc_iot, sc->mad_ioh3, MAD_LEN3);
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bad3:
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bus_space_unmap(sc->sc_iot, sc->mad_ioh2, MAD_LEN2);
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bad2:
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bus_space_unmap(sc->sc_iot, sc->mad_ioh1, MAD_LEN1);
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bad1:
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bus_space_unmap(sc->sc_iot, sc->mad_ioh, MAD_NPORT);
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bad0:
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sc->mad_chip_type = MAD_NONE;
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}
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static void
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madunmap(sc)
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struct wss_softc *sc;
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{
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if (sc->mad_chip_type == MAD_NONE)
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return;
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bus_space_unmap(sc->sc_iot, sc->mad_ioh, MAD_NPORT);
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bus_space_unmap(sc->sc_iot, sc->mad_ioh1, MAD_LEN1);
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bus_space_unmap(sc->sc_iot, sc->mad_ioh2, MAD_LEN2);
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bus_space_unmap(sc->sc_iot, sc->mad_ioh3, MAD_LEN3);
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}
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