1 /* $OpenBSD: gus_isapnp.c,v 1.1 1999/07/05 20:08:37 deraadt Exp $ */ 2 /* $NetBSD: gus.c,v 1.51 1998/01/25 23:48:06 mycroft Exp $ */ 3 4 /*- 5 * Copyright (c) 1996 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Ken Hornstein and John Kohl. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * 42 * TODO: 43 * . figure out why mixer activity while sound is playing causes problems 44 * (phantom interrupts?) 45 * . figure out a better deinterleave strategy that avoids sucking up 46 * CPU, memory and cache bandwidth. (Maybe a special encoding? 47 * Maybe use the double-speed sampling/hardware deinterleave trick 48 * from the GUS SDK?) A 486/33 isn't quite fast enough to keep 49 * up with 44.1kHz 16-bit stereo output without some drop-outs. 50 * . use CS4231 for 16-bit sampling, for a-law and mu-law playback. 51 * . actually test full-duplex sampling(recording) and playback. 52 */ 53 54 /* 55 * Gravis UltraSound driver 56 * 57 * For more detailed information, see the GUS developers' kit 58 * available on the net at: 59 * 60 * ftp://freedom.nmsu.edu/pub/ultrasound/gravis/util/ 61 * gusdkXXX.zip (developers' kit--get rev 2.22 or later) 62 * See ultrawrd.doc inside--it's MS Word (ick), but it's the bible 63 * 64 */ 65 66 /* 67 * The GUS Max has a slightly strange set of connections between the CS4231 68 * and the GF1 and the DMA interconnects. It's set up so that the CS4231 can 69 * be playing while the GF1 is loading patches from the system. 70 * 71 * Here's a recreation of the DMA interconnect diagram: 72 * 73 * GF1 74 * +---------+ digital 75 * | | record ASIC 76 * | |--------------+ 77 * | | | +--------+ 78 * | | play (dram) | +----+ | | 79 * | |--------------(------|-\ | | +-+ | 80 * +---------+ | | >-|----|---|C|--|------ dma chan 1 81 * | +---|-/ | | +-+ | 82 * | | +----+ | | | 83 * | | +----+ | | | 84 * +---------+ +-+ +--(---|-\ | | | | 85 * | | play |8| | | >-|----|----+---|------ dma chan 2 86 * | ---C----|--------|/|------(---|-/ | | | 87 * | ^ |record |1| | +----+ | | 88 * | | | /----|6|------+ +--------+ 89 * | ---+----|--/ +-+ 90 * +---------+ 91 * CS4231 8-to-16 bit bus conversion, if needed 92 * 93 * 94 * "C" is an optional combiner. 95 * 96 */ 97 98 #include <sys/param.h> 99 #include <sys/systm.h> 100 #include <sys/errno.h> 101 #include <sys/ioctl.h> 102 #include <sys/syslog.h> 103 #include <sys/device.h> 104 #include <sys/proc.h> 105 #include <sys/buf.h> 106 #include <sys/fcntl.h> 107 #include <sys/malloc.h> 108 #include <sys/kernel.h> 109 110 #include <machine/cpu.h> 111 #include <machine/intr.h> 112 #include <machine/bus.h> 113 #include <machine/cpufunc.h> 114 #include <sys/audioio.h> 115 #include <dev/audio_if.h> 116 #include <dev/mulaw.h> 117 #include <dev/auconv.h> 118 119 #include <dev/isa/isavar.h> 120 #include <dev/isa/isadmavar.h> 121 #include <i386/isa/icu.h> 122 123 #include <dev/ic/ics2101reg.h> 124 #include <dev/ic/cs4231reg.h> 125 #include <dev/ic/ad1848reg.h> 126 #include <dev/isa/ics2101var.h> 127 #include <dev/isa/ad1848var.h> 128 #include <dev/isa/cs4231var.h> 129 #include "gusreg.h" 130 #include "gusvar.h" 131 132 int gus_isapnp_match __P((struct device *, void *, void *)); 133 void gus_isapnp_attach __P((struct device *, struct device *, void *)); 134 135 struct cfattach gus_isapnp_ca = { 136 sizeof(struct gus_softc), gus_isapnp_match, gus_isapnp_attach 137 }; 138 139 /* 140 * Probe for the GUS hardware. 141 */ 142 int 143 gus_isapnp_match(parent, match, aux) 144 struct device *parent; 145 void *match, *aux; 146 { 147 return 1; 148 } 149 150 void 151 gus_isapnp_attach(parent, self, aux) 152 struct device *parent, *self; 153 void *aux; 154 { 155 struct gus_softc *sc = (void *) self; 156 struct isa_attach_args *ipa = aux; 157 158 sc->sc_iot = ipa->ia_iot; 159 sc->sc_iobase = ipa->ia_iobase; 160 161 sc->sc_ioh1 = ipa->ipa_io[0].h; /* p2xr */ 162 sc->sc_ioh2 = ipa->ipa_io[1].h; /* p3xr */ 163 sc->sc_ioh3 = ipa->ipa_io[2].h; /* codec/mixer */ 164 sc->sc_ioh4 = NULL; /* midi */ 165 166 sc->sc_irq = ipa->ipa_irq[0].num; 167 sc->sc_drq = ipa->ipa_drq[1].num; 168 sc->sc_recdrq = ipa->ipa_drq[0].num; 169 sc->sc_isa = parent->dv_parent; 170 171 gus_subattach(sc, ipa); 172 } 173