wss_isa.c revision 1.4
1 /* $NetBSD: wss_isa.c,v 1.4 1998/06/09 07:25:07 thorpej 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/errno.h> 45 #include <sys/ioctl.h> 46 #include <sys/syslog.h> 47 #include <sys/device.h> 48 #include <sys/proc.h> 49 #include <sys/buf.h> 50 51 #include <machine/cpu.h> 52 #include <machine/intr.h> 53 #include <machine/bus.h> 54 55 #include <sys/audioio.h> 56 #include <dev/audio_if.h> 57 58 #include <dev/isa/isavar.h> 59 #include <dev/isa/isadmavar.h> 60 61 #include <dev/ic/ad1848reg.h> 62 #include <dev/isa/ad1848var.h> 63 #include <dev/isa/wssreg.h> 64 #include <dev/isa/wssvar.h> 65 #include <dev/isa/madreg.h> 66 67 #ifdef AUDIO_DEBUG 68 #define DPRINTF(x) if (wssdebug) printf x 69 extern int wssdebug; 70 #else 71 #define DPRINTF(x) 72 #endif 73 74 static int wssfind __P((struct device *, struct wss_softc *, struct isa_attach_args *)); 75 76 static void madprobe __P((struct wss_softc *, int)); 77 static void madunmap __P((struct wss_softc *)); 78 static int detect_mad16 __P((struct wss_softc *, int)); 79 80 int wss_isa_probe __P((struct device *, struct cfdata *, void *)); 81 void wss_isa_attach __P((struct device *, struct device *, void *)); 82 83 struct cfattach wss_isa_ca = { 84 sizeof(struct wss_softc), wss_isa_probe, wss_isa_attach 85 }; 86 87 /* 88 * Probe for the Microsoft Sound System hardware. 89 */ 90 int 91 wss_isa_probe(parent, match, aux) 92 struct device *parent; 93 struct cfdata *match; 94 void *aux; 95 { 96 struct wss_softc probesc, *sc = &probesc; 97 98 bzero(sc, sizeof *sc); 99 sc->sc_dev.dv_cfdata = match; 100 if (wssfind(parent, sc, aux)) { 101 bus_space_unmap(sc->sc_iot, sc->sc_ioh, WSS_CODEC); 102 ad1848_unmap(&sc->sc_ad1848); 103 madunmap(sc); 104 return 1; 105 } else 106 /* Everything is already unmapped */ 107 return 0; 108 } 109 110 static int 111 wssfind(parent, sc, ia) 112 struct device *parent; 113 struct wss_softc *sc; 114 struct isa_attach_args *ia; 115 { 116 static u_char interrupt_bits[12] = { 117 -1, -1, -1, -1, -1, -1, -1, 0x08, -1, 0x10, 0x18, 0x20 118 }; 119 static u_char dma_bits[4] = {1, 2, 0, 3}; 120 121 sc->sc_iot = ia->ia_iot; 122 if (sc->sc_dev.dv_cfdata->cf_flags & 1) 123 madprobe(sc, ia->ia_iobase); 124 else 125 sc->mad_chip_type = MAD_NONE; 126 127 if (!WSS_BASE_VALID(ia->ia_iobase)) { 128 DPRINTF(("wss: configured iobase %x invalid\n", ia->ia_iobase)); 129 goto bad1; 130 } 131 132 /* Map the ports upto the AD1848 port */ 133 if (bus_space_map(sc->sc_iot, ia->ia_iobase, WSS_CODEC, 0, &sc->sc_ioh)) 134 goto bad1; 135 136 sc->sc_ad1848.sc_iot = sc->sc_iot; 137 138 /* Is there an ad1848 chip at (WSS iobase + WSS_CODEC)? */ 139 if (ad1848_mapprobe(&sc->sc_ad1848, ia->ia_iobase + WSS_CODEC) == 0) 140 goto bad; 141 142 ia->ia_iosize = WSS_NPORT; 143 144 /* Setup WSS interrupt and DMA */ 145 if (!WSS_DRQ_VALID(ia->ia_drq)) { 146 DPRINTF(("wss: configured dma chan %d invalid\n", ia->ia_drq)); 147 goto bad; 148 } 149 sc->wss_drq = ia->ia_drq; 150 sc->wss_ic = ia->ia_ic; 151 152 if (sc->wss_drq != DRQUNK && !isa_drq_isfree(sc->wss_ic, sc->wss_drq)) 153 goto bad; 154 155 if (!WSS_IRQ_VALID(ia->ia_irq)) { 156 DPRINTF(("wss: configured interrupt %d invalid\n", ia->ia_irq)); 157 goto bad; 158 } 159 160 sc->wss_irq = ia->ia_irq; 161 162 if (sc->sc_ad1848.mode <= 1) 163 ia->ia_drq2 = DRQUNK; 164 sc->wss_recdrq = 165 sc->sc_ad1848.mode > 1 && ia->ia_drq2 != DRQUNK ? 166 ia->ia_drq2 : ia->ia_drq; 167 if (sc->wss_recdrq != sc->wss_drq && !isa_drq_isfree(sc->wss_ic, 168 sc->wss_recdrq)) 169 goto bad; 170 171 /* XXX recdrq */ 172 bus_space_write_1(sc->sc_iot, sc->sc_ioh, WSS_CONFIG, 173 (interrupt_bits[ia->ia_irq] | dma_bits[ia->ia_drq])); 174 175 return 1; 176 177 bad: 178 bus_space_unmap(sc->sc_iot, sc->sc_ioh, WSS_CODEC); 179 bad1: 180 madunmap(sc); 181 return 0; 182 } 183 184 /* 185 * Attach hardware to driver, attach hardware driver to audio 186 * pseudo-device driver . 187 */ 188 void 189 wss_isa_attach(parent, self, aux) 190 struct device *parent, *self; 191 void *aux; 192 { 193 struct wss_softc *sc = (struct wss_softc *)self; 194 struct isa_attach_args *ia = (struct isa_attach_args *)aux; 195 196 if (!wssfind(parent, sc, ia)) { 197 printf("%s: wssfind failed\n", sc->sc_dev.dv_xname); 198 return; 199 } 200 201 sc->wss_ic = ia->ia_ic; 202 203 wssattach(sc); 204 } 205 206 /* 207 * Copyright by Hannu Savolainen 1994 208 * 209 * Redistribution and use in source and binary forms, with or without 210 * modification, are permitted provided that the following conditions are 211 * met: 1. Redistributions of source code must retain the above copyright 212 * notice, this list of conditions and the following disclaimer. 2. 213 * Redistributions in binary form must reproduce the above copyright notice, 214 * this list of conditions and the following disclaimer in the documentation 215 * and/or other materials provided with the distribution. 216 * 217 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY 218 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 219 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 220 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 221 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 222 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 223 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 224 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 225 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 226 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 227 * SUCH DAMAGE. 228 * 229 */ 230 231 /* 232 * Initialization code for OPTi MAD16 compatible audio chips. Including 233 * 234 * OPTi 82C928 MAD16 (replaced by C929) 235 * OAK OTI-601D Mozart 236 * OPTi 82C929 MAD16 Pro 237 * OPTi 82C931 238 */ 239 240 static int 241 detect_mad16(sc, chip_type) 242 struct wss_softc *sc; 243 int chip_type; 244 { 245 unsigned char tmp, tmp2; 246 247 sc->mad_chip_type = chip_type; 248 /* 249 * Check that reading a register doesn't return bus float (0xff) 250 * when the card is accessed using password. This may fail in case 251 * the card is in low power mode. Normally at least the power saving mode 252 * bit should be 0. 253 */ 254 if ((tmp = mad_read(sc, MC1_PORT)) == 0xff) { 255 DPRINTF(("MC1_PORT returned 0xff\n")); 256 return 0; 257 } 258 259 /* 260 * Now check that the gate is closed on first I/O after writing 261 * the password. (This is how a MAD16 compatible card works). 262 */ 263 if ((tmp2 = bus_space_read_1(sc->sc_iot, sc->mad_ioh, MC1_PORT)) == tmp) { 264 DPRINTF(("MC1_PORT didn't close after read (0x%02x)\n", tmp2)); 265 return 0; 266 } 267 268 mad_write(sc, MC1_PORT, tmp ^ 0x80); /* Toggle a bit */ 269 270 /* Compare the bit */ 271 if ((tmp2 = mad_read(sc, MC1_PORT)) != (tmp ^ 0x80)) { 272 mad_write(sc, MC1_PORT, tmp); /* Restore */ 273 DPRINTF(("Bit revert test failed (0x%02x, 0x%02x)\n", tmp, tmp2)); 274 return 0; 275 } 276 277 mad_write(sc, MC1_PORT, tmp); /* Restore */ 278 return 1; 279 } 280 281 static void 282 madprobe(sc, iobase) 283 struct wss_softc *sc; 284 int iobase; 285 { 286 static int valid_ports[M_WSS_NPORTS] = 287 { M_WSS_PORT0, M_WSS_PORT1, M_WSS_PORT2, M_WSS_PORT3 }; 288 int i; 289 290 /* Allocate bus space that the MAD chip wants */ 291 if (bus_space_map(sc->sc_iot, MAD_BASE, MAD_NPORT, 0, &sc->mad_ioh)) 292 goto bad0; 293 if (bus_space_map(sc->sc_iot, MAD_REG1, MAD_LEN1, 0, &sc->mad_ioh1)) 294 goto bad1; 295 if (bus_space_map(sc->sc_iot, MAD_REG2, MAD_LEN2, 0, &sc->mad_ioh2)) 296 goto bad2; 297 if (bus_space_map(sc->sc_iot, MAD_REG3, MAD_LEN3, 0, &sc->mad_ioh3)) 298 goto bad3; 299 300 DPRINTF(("mad: Detect using password = 0xE2\n")); 301 if (!detect_mad16(sc, MAD_82C928)) { 302 /* No luck. Try different model */ 303 DPRINTF(("mad: Detect using password = 0xE3\n")); 304 if (!detect_mad16(sc, MAD_82C929)) 305 goto bad; 306 sc->mad_chip_type = MAD_82C929; 307 DPRINTF(("mad: 82C929 detected\n")); 308 } else { 309 sc->mad_chip_type = MAD_82C928; 310 if ((mad_read(sc, MC3_PORT) & 0x03) == 0x03) { 311 DPRINTF(("mad: Mozart detected\n")); 312 sc->mad_chip_type = MAD_OTI601D; 313 } else { 314 DPRINTF(("mad: 82C928 detected?\n")); 315 sc->mad_chip_type = MAD_82C928; 316 } 317 } 318 319 #ifdef AUDIO_DEBUG 320 if (wssdebug) 321 for (i = MC1_PORT; i <= MC7_PORT; i++) 322 printf("mad: port %03x = %02x\n", i, mad_read(sc, i)); 323 #endif 324 325 /* Set the WSS address. */ 326 for (i = 0; i < M_WSS_NPORTS; i++) 327 if (valid_ports[i] == iobase) 328 break; 329 if (i >= M_WSS_NPORTS) { /* Not a valid port */ 330 printf("mad: Bad WSS base address 0x%x\n", iobase); 331 goto bad; 332 } 333 sc->mad_ioindex = i; 334 /* enable WSS emulation at the I/O port, no joystick */ 335 mad_write(sc, MC1_PORT, M_WSS_PORT_SELECT(i) | MC1_JOYDISABLE); 336 mad_write(sc, MC2_PORT, 0x03); /* ? */ 337 mad_write(sc, MC3_PORT, 0xf0); /* Disable SB */ 338 return; 339 340 bad: 341 bus_space_unmap(sc->sc_iot, sc->mad_ioh3, MAD_LEN3); 342 bad3: 343 bus_space_unmap(sc->sc_iot, sc->mad_ioh2, MAD_LEN2); 344 bad2: 345 bus_space_unmap(sc->sc_iot, sc->mad_ioh1, MAD_LEN1); 346 bad1: 347 bus_space_unmap(sc->sc_iot, sc->mad_ioh, MAD_NPORT); 348 bad0: 349 sc->mad_chip_type = MAD_NONE; 350 } 351 352 static void 353 madunmap(sc) 354 struct wss_softc *sc; 355 { 356 if (sc->mad_chip_type == MAD_NONE) 357 return; 358 bus_space_unmap(sc->sc_iot, sc->mad_ioh, MAD_NPORT); 359 bus_space_unmap(sc->sc_iot, sc->mad_ioh1, MAD_LEN1); 360 bus_space_unmap(sc->sc_iot, sc->mad_ioh2, MAD_LEN2); 361 bus_space_unmap(sc->sc_iot, sc->mad_ioh3, MAD_LEN3); 362 } 363
Indexes created Tue Oct 14 08:09:56 GMT 2025