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Diffstat (limited to 'sys/dev/isa/gus_isapnp.c')
| -rw-r--r-- | sys/dev/isa/gus_isapnp.c | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/sys/dev/isa/gus_isapnp.c b/sys/dev/isa/gus_isapnp.c new file mode 100644 index 00000000000..55d54d28a74 --- /dev/null +++ b/sys/dev/isa/gus_isapnp.c @@ -0,0 +1,172 @@ +/* $OpenBSD: gus_isapnp.c,v 1.1 1999/07/05 20:08:37 deraadt Exp $ */ +/* $NetBSD: gus.c,v 1.51 1998/01/25 23:48:06 mycroft Exp $ */ + +/*- + * Copyright (c) 1996 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Ken Hornstein and John Kohl. + * + * 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 NetBSD + * Foundation, Inc. and its contributors. + * 4. Neither the name of The NetBSD Foundation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS + * ``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 FOUNDATION OR CONTRIBUTORS + * 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. + */ + +/* + * + * TODO: + * . figure out why mixer activity while sound is playing causes problems + * (phantom interrupts?) + * . figure out a better deinterleave strategy that avoids sucking up + * CPU, memory and cache bandwidth. (Maybe a special encoding? + * Maybe use the double-speed sampling/hardware deinterleave trick + * from the GUS SDK?) A 486/33 isn't quite fast enough to keep + * up with 44.1kHz 16-bit stereo output without some drop-outs. + * . use CS4231 for 16-bit sampling, for a-law and mu-law playback. + * . actually test full-duplex sampling(recording) and playback. + */ + +/* + * Gravis UltraSound driver + * + * For more detailed information, see the GUS developers' kit + * available on the net at: + * + * ftp://freedom.nmsu.edu/pub/ultrasound/gravis/util/ + * gusdkXXX.zip (developers' kit--get rev 2.22 or later) + * See ultrawrd.doc inside--it's MS Word (ick), but it's the bible + * + */ + +/* + * The GUS Max has a slightly strange set of connections between the CS4231 + * and the GF1 and the DMA interconnects. It's set up so that the CS4231 can + * be playing while the GF1 is loading patches from the system. + * + * Here's a recreation of the DMA interconnect diagram: + * + * GF1 + * +---------+ digital + * | | record ASIC + * | |--------------+ + * | | | +--------+ + * | | play (dram) | +----+ | | + * | |--------------(------|-\ | | +-+ | + * +---------+ | | >-|----|---|C|--|------ dma chan 1 + * | +---|-/ | | +-+ | + * | | +----+ | | | + * | | +----+ | | | + * +---------+ +-+ +--(---|-\ | | | | + * | | play |8| | | >-|----|----+---|------ dma chan 2 + * | ---C----|--------|/|------(---|-/ | | | + * | ^ |record |1| | +----+ | | + * | | | /----|6|------+ +--------+ + * | ---+----|--/ +-+ + * +---------+ + * CS4231 8-to-16 bit bus conversion, if needed + * + * + * "C" is an optional combiner. + * + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/errno.h> +#include <sys/ioctl.h> +#include <sys/syslog.h> +#include <sys/device.h> +#include <sys/proc.h> +#include <sys/buf.h> +#include <sys/fcntl.h> +#include <sys/malloc.h> +#include <sys/kernel.h> + +#include <machine/cpu.h> +#include <machine/intr.h> +#include <machine/bus.h> +#include <machine/cpufunc.h> +#include <sys/audioio.h> +#include <dev/audio_if.h> +#include <dev/mulaw.h> +#include <dev/auconv.h> + +#include <dev/isa/isavar.h> +#include <dev/isa/isadmavar.h> +#include <i386/isa/icu.h> + +#include <dev/ic/ics2101reg.h> +#include <dev/ic/cs4231reg.h> +#include <dev/ic/ad1848reg.h> +#include <dev/isa/ics2101var.h> +#include <dev/isa/ad1848var.h> +#include <dev/isa/cs4231var.h> +#include "gusreg.h" +#include "gusvar.h" + +int gus_isapnp_match __P((struct device *, void *, void *)); +void gus_isapnp_attach __P((struct device *, struct device *, void *)); + +struct cfattach gus_isapnp_ca = { + sizeof(struct gus_softc), gus_isapnp_match, gus_isapnp_attach +}; + +/* + * Probe for the GUS hardware. + */ +int +gus_isapnp_match(parent, match, aux) + struct device *parent; + void *match, *aux; +{ + return 1; +} + +void +gus_isapnp_attach(parent, self, aux) + struct device *parent, *self; + void *aux; +{ + struct gus_softc *sc = (void *) self; + struct isa_attach_args *ipa = aux; + + sc->sc_iot = ipa->ia_iot; + sc->sc_iobase = ipa->ia_iobase; + + sc->sc_ioh1 = ipa->ipa_io[0].h; /* p2xr */ + sc->sc_ioh2 = ipa->ipa_io[1].h; /* p3xr */ + sc->sc_ioh3 = ipa->ipa_io[2].h; /* codec/mixer */ + sc->sc_ioh4 = NULL; /* midi */ + + sc->sc_irq = ipa->ipa_irq[0].num; + sc->sc_drq = ipa->ipa_drq[1].num; + sc->sc_recdrq = ipa->ipa_drq[0].num; + sc->sc_isa = parent->dv_parent; + + gus_subattach(sc, ipa); +} |