wss_isa.c revision 1.5
1 /* $NetBSD: wss_isa.c,v 1.5 1998/08/25 22:34:31 pk Exp $ */ 2 3 /* 4 * Copyright (c) 1994 John Brezak 5 * Copyright (c) 1991-1993 Regents of the University of California. 6 * All rights reserved. 7 * 8 * MAD support: 9 * Copyright (c) 1996 Lennart Augustsson 10 * Based on code which is 11 * Copyright (c) 1994 Hannu Savolainen 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. All advertising materials mentioning features or use of this software 22 * must display the following acknowledgement: 23 * This product includes software developed by the Computer Systems 24 * Engineering Group at Lawrence Berkeley Laboratory. 25 * 4. Neither the name of the University nor of the Laboratory may be used 26 * to endorse or promote products derived from this software without 27 * specific prior written permission. 28 * 29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 39 * SUCH DAMAGE. 40 * 41 */ 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/device.h> 45 #include <sys/errno.h> 46 47 #include <machine/cpu.h> 48 #include <machine/intr.h> 49 #include <machine/bus.h> 50 51 #include <sys/audioio.h> 52 #include <dev/audio_if.h> 53 54 #include <dev/isa/isavar.h> 55 #include <dev/isa/isadmavar.h> 56 57 #include <dev/ic/ad1848reg.h> 58 #include <dev/isa/ad1848var.h> 59 #include <dev/isa/wssreg.h> 60 #include <dev/isa/wssvar.h> 61 #include <dev/isa/madreg.h> 62 63 #ifdef AUDIO_DEBUG 64 #define DPRINTF(x) if (wssdebug) printf x 65 extern int wssdebug; 66 #else 67 #define DPRINTF(x) 68 #endif 69 70 static int wssfind __P((struct device *, struct wss_softc *, struct isa_attach_args *)); 71 72 static void madprobe __P((struct wss_softc *, int)); 73 static void madunmap __P((struct wss_softc *)); 74 static int detect_mad16 __P((struct wss_softc *, int)); 75 76 int wss_isa_probe __P((struct device *, struct cfdata *, void *)); 77 void wss_isa_attach __P((struct device *, struct device *, void *)); 78 79 struct cfattach wss_isa_ca = { 80 sizeof(struct wss_softc), wss_isa_probe, wss_isa_attach 81 }; 82 83 /* 84 * Probe for the Microsoft Sound System hardware. 85 */ 86 int 87 wss_isa_probe(parent, match, aux) 88 struct device *parent; 89 struct cfdata *match; 90 void *aux; 91 { 92 struct wss_softc probesc, *sc = &probesc; 93 struct ad1848_softc *ac = (struct ad1848_softc *)&sc->sc_ad1848; 94 95 bzero(sc, sizeof *sc); 96 ac->sc_dev.dv_cfdata = match; 97 if (wssfind(parent, sc, aux)) { 98 bus_space_unmap(sc->sc_iot, sc->sc_ioh, WSS_CODEC); 99 ad1848_isa_unmap(&sc->sc_ad1848); 100 madunmap(sc); 101 return 1; 102 } else 103 /* Everything is already unmapped */ 104 return 0; 105 } 106 107 static int 108 wssfind(parent, sc, ia) 109 struct device *parent; 110 struct wss_softc *sc; 111 struct isa_attach_args *ia; 112 { 113 struct ad1848_softc *ac = (struct ad1848_softc *)&sc->sc_ad1848; 114 static u_char interrupt_bits[12] = { 115 -1, -1, -1, -1, -1, -1, -1, 0x08, -1, 0x10, 0x18, 0x20 116 }; 117 static u_char dma_bits[4] = {1, 2, 0, 3}; 118 119 sc->sc_iot = ia->ia_iot; 120 if (ac->sc_dev.dv_cfdata->cf_flags & 1) 121 madprobe(sc, ia->ia_iobase); 122 else 123 sc->mad_chip_type = MAD_NONE; 124 125 if (!WSS_BASE_VALID(ia->ia_iobase)) { 126 DPRINTF(("wss: configured iobase %x invalid\n", ia->ia_iobase)); 127 goto bad1; 128 } 129 130 /* Map the ports upto the AD1848 port */ 131 if (bus_space_map(sc->sc_iot, ia->ia_iobase, WSS_CODEC, 0, &sc->sc_ioh)) 132 goto bad1; 133 134 ac->sc_iot = sc->sc_iot; 135 136 /* Is there an ad1848 chip at (WSS iobase + WSS_CODEC)? */ 137 if (ad1848_isa_mapprobe(&sc->sc_ad1848, ia->ia_iobase + WSS_CODEC) == 0) 138 goto bad; 139 140 ia->ia_iosize = WSS_NPORT; 141 142 /* Setup WSS interrupt and DMA */ 143 if (!WSS_DRQ_VALID(ia->ia_drq)) { 144 DPRINTF(("wss: configured dma chan %d invalid\n", ia->ia_drq)); 145 goto bad; 146 } 147 sc->wss_drq = ia->ia_drq; 148 sc->wss_ic = ia->ia_ic; 149 150 if (sc->wss_drq != DRQUNK && !isa_drq_isfree(sc->wss_ic, sc->wss_drq)) 151 goto bad; 152 153 if (!WSS_IRQ_VALID(ia->ia_irq)) { 154 DPRINTF(("wss: configured interrupt %d invalid\n", ia->ia_irq)); 155 goto bad; 156 } 157 158 sc->wss_irq = ia->ia_irq; 159 160 if (ac->mode <= 1) 161 ia->ia_drq2 = DRQUNK; 162 sc->wss_recdrq = 163 ac->mode > 1 && ia->ia_drq2 != DRQUNK ? 164 ia->ia_drq2 : ia->ia_drq; 165 if (sc->wss_recdrq != sc->wss_drq && !isa_drq_isfree(sc->wss_ic, 166 sc->wss_recdrq)) 167 goto bad; 168 169 /* XXX recdrq */ 170 bus_space_write_1(sc->sc_iot, sc->sc_ioh, WSS_CONFIG, 171 (interrupt_bits[ia->ia_irq] | dma_bits[ia->ia_drq])); 172 173 return 1; 174 175 bad: 176 bus_space_unmap(sc->sc_iot, sc->sc_ioh, WSS_CODEC); 177 bad1: 178 madunmap(sc); 179 return 0; 180 } 181 182 /* 183 * Attach hardware to driver, attach hardware driver to audio 184 * pseudo-device driver . 185 */ 186 void 187 wss_isa_attach(parent, self, aux) 188 struct device *parent, *self; 189 void *aux; 190 { 191 struct wss_softc *sc = (struct wss_softc *)self; 192 struct ad1848_softc *ac = (struct ad1848_softc *)&sc->sc_ad1848; 193 struct isa_attach_args *ia = (struct isa_attach_args *)aux; 194 195 if (!wssfind(parent, sc, ia)) { 196 printf("%s: wssfind failed\n", ac->sc_dev.dv_xname); 197 return; 198 } 199 200 sc->wss_ic = ia->ia_ic; 201 202 wssattach(sc); 203 } 204 205 /* 206 * Copyright by Hannu Savolainen 1994 207 * 208 * Redistribution and use in source and binary forms, with or without 209 * modification, are permitted provided that the following conditions are 210 * met: 1. Redistributions of source code must retain the above copyright 211 * notice, this list of conditions and the following disclaimer. 2. 212 * Redistributions in binary form must reproduce the above copyright notice, 213 * this list of conditions and the following disclaimer in the documentation 214 * and/or other materials provided with the distribution. 215 * 216 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY 217 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 218 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 219 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 220 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 221 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 222 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 223 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 224 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 225 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 226 * SUCH DAMAGE. 227 * 228 */ 229 230 /* 231 * Initialization code for OPTi MAD16 compatible audio chips. Including 232 * 233 * OPTi 82C928 MAD16 (replaced by C929) 234 * OAK OTI-601D Mozart 235 * OPTi 82C929 MAD16 Pro 236 * OPTi 82C931 237 */ 238 239 static int 240 detect_mad16(sc, chip_type) 241 struct wss_softc *sc; 242 int chip_type; 243 { 244 unsigned char tmp, tmp2; 245 246 sc->mad_chip_type = chip_type; 247 /* 248 * Check that reading a register doesn't return bus float (0xff) 249 * when the card is accessed using password. This may fail in case 250 * the card is in low power mode. Normally at least the power saving mode 251 * bit should be 0. 252 */ 253 if ((tmp = mad_read(sc, MC1_PORT)) == 0xff) { 254 DPRINTF(("MC1_PORT returned 0xff\n")); 255 return 0; 256 } 257 258 /* 259 * Now check that the gate is closed on first I/O after writing 260 * the password. (This is how a MAD16 compatible card works). 261 */ 262 if ((tmp2 = bus_space_read_1(sc->sc_iot, sc->mad_ioh, MC1_PORT)) == tmp) { 263 DPRINTF(("MC1_PORT didn't close after read (0x%02x)\n", tmp2)); 264 return 0; 265 } 266 267 mad_write(sc, MC1_PORT, tmp ^ 0x80); /* Toggle a bit */ 268 269 /* Compare the bit */ 270 if ((tmp2 = mad_read(sc, MC1_PORT)) != (tmp ^ 0x80)) { 271 mad_write(sc, MC1_PORT, tmp); /* Restore */ 272 DPRINTF(("Bit revert test failed (0x%02x, 0x%02x)\n", tmp, tmp2)); 273 return 0; 274 } 275 276 mad_write(sc, MC1_PORT, tmp); /* Restore */ 277 return 1; 278 } 279 280 static void 281 madprobe(sc, iobase) 282 struct wss_softc *sc; 283 int iobase; 284 { 285 static int valid_ports[M_WSS_NPORTS] = 286 { M_WSS_PORT0, M_WSS_PORT1, M_WSS_PORT2, M_WSS_PORT3 }; 287 int i; 288 289 /* Allocate bus space that the MAD chip wants */ 290 if (bus_space_map(sc->sc_iot, MAD_BASE, MAD_NPORT, 0, &sc->mad_ioh)) 291 goto bad0; 292 if (bus_space_map(sc->sc_iot, MAD_REG1, MAD_LEN1, 0, &sc->mad_ioh1)) 293 goto bad1; 294 if (bus_space_map(sc->sc_iot, MAD_REG2, MAD_LEN2, 0, &sc->mad_ioh2)) 295 goto bad2; 296 if (bus_space_map(sc->sc_iot, MAD_REG3, MAD_LEN3, 0, &sc->mad_ioh3)) 297 goto bad3; 298 299 DPRINTF(("mad: Detect using password = 0xE2\n")); 300 if (!detect_mad16(sc, MAD_82C928)) { 301 /* No luck. Try different model */ 302 DPRINTF(("mad: Detect using password = 0xE3\n")); 303 if (!detect_mad16(sc, MAD_82C929)) 304 goto bad; 305 sc->mad_chip_type = MAD_82C929; 306 DPRINTF(("mad: 82C929 detected\n")); 307 } else { 308 sc->mad_chip_type = MAD_82C928; 309 if ((mad_read(sc, MC3_PORT) & 0x03) == 0x03) { 310 DPRINTF(("mad: Mozart detected\n")); 311 sc->mad_chip_type = MAD_OTI601D; 312 } else { 313 DPRINTF(("mad: 82C928 detected?\n")); 314 sc->mad_chip_type = MAD_82C928; 315 } 316 } 317 318 #ifdef AUDIO_DEBUG 319 if (wssdebug) 320 for (i = MC1_PORT; i <= MC7_PORT; i++) 321 printf("mad: port %03x = %02x\n", i, mad_read(sc, i)); 322 #endif 323 324 /* Set the WSS address. */ 325 for (i = 0; i < M_WSS_NPORTS; i++) 326 if (valid_ports[i] == iobase) 327 break; 328 if (i >= M_WSS_NPORTS) { /* Not a valid port */ 329 printf("mad: Bad WSS base address 0x%x\n", iobase); 330 goto bad; 331 } 332 sc->mad_ioindex = i; 333 /* enable WSS emulation at the I/O port, no joystick */ 334 mad_write(sc, MC1_PORT, M_WSS_PORT_SELECT(i) | MC1_JOYDISABLE); 335 mad_write(sc, MC2_PORT, 0x03); /* ? */ 336 mad_write(sc, MC3_PORT, 0xf0); /* Disable SB */ 337 return; 338 339 bad: 340 bus_space_unmap(sc->sc_iot, sc->mad_ioh3, MAD_LEN3); 341 bad3: 342 bus_space_unmap(sc->sc_iot, sc->mad_ioh2, MAD_LEN2); 343 bad2: 344 bus_space_unmap(sc->sc_iot, sc->mad_ioh1, MAD_LEN1); 345 bad1: 346 bus_space_unmap(sc->sc_iot, sc->mad_ioh, MAD_NPORT); 347 bad0: 348 sc->mad_chip_type = MAD_NONE; 349 } 350 351 static void 352 madunmap(sc) 353 struct wss_softc *sc; 354 { 355 if (sc->mad_chip_type == MAD_NONE) 356 return; 357 bus_space_unmap(sc->sc_iot, sc->mad_ioh, MAD_NPORT); 358 bus_space_unmap(sc->sc_iot, sc->mad_ioh1, MAD_LEN1); 359 bus_space_unmap(sc->sc_iot, sc->mad_ioh2, MAD_LEN2); 360 bus_space_unmap(sc->sc_iot, sc->mad_ioh3, MAD_LEN3); 361 } 362
Indexes created Thu Sep 25 08:09:54 GMT 2025