/* $OpenBSD: gus_isa.c,v 1.10 2024/05/28 09:27:08 jsg 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. * * 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/buf.h> #include <sys/fcntl.h> #include <sys/malloc.h> #include <sys/kernel.h> #include <sys/timeout.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/isa/isavar.h> #include <dev/isa/isadmavar.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 "gusreg.h" #include "gusvar.h" /* * ISA bus driver routines */ int gus_isa_match(struct device *, void *, void *); void gus_isa_attach(struct device *, struct device *, void *); const struct cfattach gus_isa_ca = { sizeof(struct gus_softc), gus_isa_match, gus_isa_attach, }; int gus_isa_match(struct device *parent, void *match, void *aux) { struct isa_attach_args *ia = aux; int iobase = ia->ia_iobase; int recdrq = ia->ia_drq2; /* * Before we do anything else, make sure requested IRQ and DRQ are * valid for this card. */ /* XXX range check before indexing!! */ if (ia->ia_irq == IRQUNK || gus_irq_map[ia->ia_irq] == IRQUNK) { DPRINTF(("gus: invalid irq %d, card not probed\n", ia->ia_irq)); return 0; } if (ia->ia_drq == DRQUNK || gus_drq_map[ia->ia_drq] == DRQUNK) { DPRINTF(("gus: invalid drq %d, card not probed\n", ia->ia_drq)); return 0; } if (recdrq != DRQUNK) { if (recdrq > 7 || gus_drq_map[recdrq] == DRQUNK) { DPRINTF(("gus: invalid second DMA channel (%d), card not probed\n", recdrq)); return 0; } } else recdrq = ia->ia_drq; if (iobase == IOBASEUNK) { int i; for(i = 0; i < gus_addrs; i++) if (gus_test_iobase(ia->ia_iot, gus_base_addrs[i])) { iobase = gus_base_addrs[i]; goto done; } return 0; } else if (!gus_test_iobase(ia->ia_iot, iobase)) return 0; done: if ((ia->ia_drq != -1 && !isa_drq_isfree(parent, ia->ia_drq)) || (recdrq != -1 && !isa_drq_isfree(parent, recdrq))) return 0; ia->ia_iobase = iobase; ia->ia_iosize = GUS_NPORT1; return 1; } /* * Setup the GUS for use; called shortly after probe */ void gus_isa_attach(struct device *parent, struct device *self, void *aux) { struct gus_softc *sc = (void *) self; struct isa_attach_args *ia = aux; sc->sc_iot = ia->ia_iot; sc->sc_iobase = ia->ia_iobase; /* Map i/o space */ if (bus_space_map(sc->sc_iot, sc->sc_iobase, GUS_NPORT1, 0, &sc->sc_ioh1)) panic("%s: can't map io port range 1", self->dv_xname); if (bus_space_map(sc->sc_iot, sc->sc_iobase+GUS_IOH2_OFFSET, GUS_NPORT2, 0, &sc->sc_ioh2)) panic("%s: can't map io port range 2", self->dv_xname); /* XXX Maybe we shouldn't fail on mapping this, but just assume * the card is of revision 0? */ if (bus_space_map(sc->sc_iot, sc->sc_iobase+GUS_IOH3_OFFSET, GUS_NPORT3, 0, &sc->sc_ioh3)) panic("%s: can't map io port range 3", self->dv_xname); if (bus_space_map(sc->sc_iot, sc->sc_iobase+GUS_IOH4_OFFSET, GUS_NPORT4, 0, &sc->sc_ioh4)) panic("%s: can't map io port range 4", self->dv_xname); sc->sc_irq = ia->ia_irq; sc->sc_drq = ia->ia_drq; sc->sc_recdrq = ia->ia_drq2; sc->sc_isa = parent; gus_subattach(sc, aux); }
