wss_isa.c revision 1.11
1 /* $NetBSD: wss_isa.c,v 1.11 2001/11/13 08:01:35 lukem 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 43 #include <sys/cdefs.h> 44 __KERNEL_RCSID(0, "$NetBSD: wss_isa.c,v 1.11 2001/11/13 08:01:35 lukem Exp $"); 45 46 #include <sys/param.h> 47 #include <sys/systm.h> 48 #include <sys/device.h> 49 #include <sys/errno.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 struct ad1848_softc *ac = (struct ad1848_softc *)&sc->sc_ad1848; 98 99 memset(sc, 0, sizeof *sc); 100 ac->sc_dev.dv_cfdata = match; 101 if (wssfind(parent, sc, aux)) { 102 bus_space_unmap(sc->sc_iot, sc->sc_ioh, WSS_CODEC); 103 ad1848_isa_unmap(&sc->sc_ad1848); 104 madunmap(sc); 105 return 1; 106 } else 107 /* Everything is already unmapped */ 108 return 0; 109 } 110 111 static int 112 wssfind(parent, sc, ia) 113 struct device *parent; 114 struct wss_softc *sc; 115 struct isa_attach_args *ia; 116 { 117 struct ad1848_softc *ac = &sc->sc_ad1848.sc_ad1848; 118 static u_char interrupt_bits[12] = { 119 -1, -1, -1, -1, -1, -1, -1, 0x08, -1, 0x10, 0x18, 0x20 120 }; 121 static u_char dma_bits[4] = {1, 2, 0, 3}; 122 123 sc->sc_iot = ia->ia_iot; 124 if (ac->sc_dev.dv_cfdata->cf_flags & 1) 125 madprobe(sc, ia->ia_iobase); 126 else 127 sc->mad_chip_type = MAD_NONE; 128 129 #if 0 130 if (!WSS_BASE_VALID(ia->ia_iobase)) { 131 DPRINTF(("wss: configured iobase %x invalid\n", ia->ia_iobase)); 132 goto bad1; 133 } 134 #endif 135 136 /* Map the ports upto the AD1848 port */ 137 if (bus_space_map(sc->sc_iot, ia->ia_iobase, WSS_CODEC, 0, &sc->sc_ioh)) 138 goto bad1; 139 140 ac->sc_iot = sc->sc_iot; 141 142 /* Is there an ad1848 chip at (WSS iobase + WSS_CODEC)? */ 143 if (ad1848_isa_mapprobe(&sc->sc_ad1848, ia->ia_iobase + WSS_CODEC) == 0) 144 goto bad; 145 146 ia->ia_iosize = WSS_NPORT; 147 148 #if 0 149 /* Setup WSS interrupt and DMA */ 150 if (!WSS_DRQ_VALID(ia->ia_drq)) { 151 DPRINTF(("wss: configured dma chan %d invalid\n", ia->ia_drq)); 152 goto bad; 153 } 154 #endif 155 sc->wss_playdrq = ia->ia_drq; 156 sc->wss_ic = ia->ia_ic; 157 158 if (sc->wss_playdrq != DRQUNK && !isa_drq_isfree(sc->wss_ic, sc->wss_playdrq)) 159 goto bad; 160 161 #if 0 162 if (!WSS_IRQ_VALID(ia->ia_irq)) { 163 DPRINTF(("wss: configured interrupt %d invalid\n", ia->ia_irq)); 164 goto bad; 165 } 166 #endif 167 168 sc->wss_irq = ia->ia_irq; 169 170 if (ac->mode <= 1) 171 ia->ia_drq2 = DRQUNK; 172 sc->wss_recdrq = 173 ac->mode > 1 && ia->ia_drq2 != DRQUNK ? 174 ia->ia_drq2 : ia->ia_drq; 175 if (sc->wss_recdrq != sc->wss_playdrq && !isa_drq_isfree(sc->wss_ic, 176 sc->wss_recdrq)) 177 goto bad; 178 179 /* XXX recdrq */ 180 bus_space_write_1(sc->sc_iot, sc->sc_ioh, WSS_CONFIG, 181 (interrupt_bits[ia->ia_irq] | dma_bits[ia->ia_drq])); 182 183 return 1; 184 185 bad: 186 bus_space_unmap(sc->sc_iot, sc->sc_ioh, WSS_CODEC); 187 bad1: 188 madunmap(sc); 189 return 0; 190 } 191 192 /* 193 * Attach hardware to driver, attach hardware driver to audio 194 * pseudo-device driver . 195 */ 196 void 197 wss_isa_attach(parent, self, aux) 198 struct device *parent, *self; 199 void *aux; 200 { 201 struct wss_softc *sc = (struct wss_softc *)self; 202 struct ad1848_softc *ac = (struct ad1848_softc *)&sc->sc_ad1848; 203 struct isa_attach_args *ia = (struct isa_attach_args *)aux; 204 205 if (!wssfind(parent, sc, ia)) { 206 printf("%s: wssfind failed\n", ac->sc_dev.dv_xname); 207 return; 208 } 209 210 sc->wss_ic = ia->ia_ic; 211 212 wssattach(sc); 213 } 214 215 /* 216 * Copyright by Hannu Savolainen 1994 217 * 218 * Redistribution and use in source and binary forms, with or without 219 * modification, are permitted provided that the following conditions are 220 * met: 1. Redistributions of source code must retain the above copyright 221 * notice, this list of conditions and the following disclaimer. 2. 222 * Redistributions in binary form must reproduce the above copyright notice, 223 * this list of conditions and the following disclaimer in the documentation 224 * and/or other materials provided with the distribution. 225 * 226 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY 227 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 228 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 229 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 230 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 231 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 232 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 233 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 234 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 235 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 236 * SUCH DAMAGE. 237 * 238 */ 239 240 /* 241 * Initialization code for OPTi MAD16 compatible audio chips. Including 242 * 243 * OPTi 82C928 MAD16 (replaced by C929) 244 * OAK OTI-601D Mozart 245 * OPTi 82C929 MAD16 Pro 246 * OPTi 82C931 247 */ 248 249 static int 250 detect_mad16(sc, chip_type) 251 struct wss_softc *sc; 252 int chip_type; 253 { 254 unsigned char tmp, tmp2; 255 256 sc->mad_chip_type = chip_type; 257 /* 258 * Check that reading a register doesn't return bus float (0xff) 259 * when the card is accessed using password. This may fail in case 260 * the card is in low power mode. Normally at least the power saving mode 261 * bit should be 0. 262 */ 263 if ((tmp = mad_read(sc, MC1_PORT)) == 0xff) { 264 DPRINTF(("MC1_PORT returned 0xff\n")); 265 return 0; 266 } 267 268 /* 269 * Now check that the gate is closed on first I/O after writing 270 * the password. (This is how a MAD16 compatible card works). 271 */ 272 if ((tmp2 = bus_space_read_1(sc->sc_iot, sc->mad_ioh, MC1_PORT)) == tmp) { 273 DPRINTF(("MC1_PORT didn't close after read (0x%02x)\n", tmp2)); 274 return 0; 275 } 276 277 mad_write(sc, MC1_PORT, tmp ^ 0x80); /* Toggle a bit */ 278 279 /* Compare the bit */ 280 if ((tmp2 = mad_read(sc, MC1_PORT)) != (tmp ^ 0x80)) { 281 mad_write(sc, MC1_PORT, tmp); /* Restore */ 282 DPRINTF(("Bit revert test failed (0x%02x, 0x%02x)\n", tmp, tmp2)); 283 return 0; 284 } 285 286 mad_write(sc, MC1_PORT, tmp); /* Restore */ 287 return 1; 288 } 289 290 static void 291 madprobe(sc, iobase) 292 struct wss_softc *sc; 293 int iobase; 294 { 295 static int valid_ports[M_WSS_NPORTS] = 296 { M_WSS_PORT0, M_WSS_PORT1, M_WSS_PORT2, M_WSS_PORT3 }; 297 int i; 298 299 /* Allocate bus space that the MAD chip wants */ 300 if (bus_space_map(sc->sc_iot, MAD_BASE, MAD_NPORT, 0, &sc->mad_ioh)) 301 goto bad0; 302 if (bus_space_map(sc->sc_iot, MAD_REG1, MAD_LEN1, 0, &sc->mad_ioh1)) 303 goto bad1; 304 if (bus_space_map(sc->sc_iot, MAD_REG2, MAD_LEN2, 0, &sc->mad_ioh2)) 305 goto bad2; 306 if (bus_space_map(sc->sc_iot, MAD_REG3, MAD_LEN3, 0, &sc->sc_opl_ioh)) 307 goto bad3; 308 309 DPRINTF(("mad: Detect using password = 0xE2\n")); 310 if (!detect_mad16(sc, MAD_82C928)) { 311 /* No luck. Try different model */ 312 DPRINTF(("mad: Detect using password = 0xE3\n")); 313 if (!detect_mad16(sc, MAD_82C929)) 314 goto bad; 315 sc->mad_chip_type = MAD_82C929; 316 DPRINTF(("mad: 82C929 detected\n")); 317 } else { 318 sc->mad_chip_type = MAD_82C928; 319 if ((mad_read(sc, MC3_PORT) & 0x03) == 0x03) { 320 DPRINTF(("mad: Mozart detected\n")); 321 sc->mad_chip_type = MAD_OTI601D; 322 } else { 323 DPRINTF(("mad: 82C928 detected?\n")); 324 sc->mad_chip_type = MAD_82C928; 325 } 326 } 327 328 #ifdef AUDIO_DEBUG 329 if (wssdebug) 330 for (i = MC1_PORT; i <= MC7_PORT; i++) 331 printf("mad: port %03x = %02x\n", i, mad_read(sc, i)); 332 #endif 333 334 /* Set the WSS address. */ 335 for (i = 0; i < M_WSS_NPORTS; i++) 336 if (valid_ports[i] == iobase) 337 break; 338 if (i >= M_WSS_NPORTS) { /* Not a valid port */ 339 printf("mad: Bad WSS base address 0x%x\n", iobase); 340 goto bad; 341 } 342 sc->mad_ioindex = i; 343 /* enable WSS emulation at the I/O port, no joystick */ 344 mad_write(sc, MC1_PORT, M_WSS_PORT_SELECT(i) | MC1_JOYDISABLE); 345 mad_write(sc, MC2_PORT, 0x03); /* ? */ 346 mad_write(sc, MC3_PORT, 0xf0); /* Disable SB */ 347 return; 348 349 bad: 350 bus_space_unmap(sc->sc_iot, sc->sc_opl_ioh, MAD_LEN3); 351 bad3: 352 bus_space_unmap(sc->sc_iot, sc->mad_ioh2, MAD_LEN2); 353 bad2: 354 bus_space_unmap(sc->sc_iot, sc->mad_ioh1, MAD_LEN1); 355 bad1: 356 bus_space_unmap(sc->sc_iot, sc->mad_ioh, MAD_NPORT); 357 bad0: 358 sc->mad_chip_type = MAD_NONE; 359 } 360 361 static void 362 madunmap(sc) 363 struct wss_softc *sc; 364 { 365 if (sc->mad_chip_type == MAD_NONE) 366 return; 367 bus_space_unmap(sc->sc_iot, sc->mad_ioh, MAD_NPORT); 368 bus_space_unmap(sc->sc_iot, sc->mad_ioh1, MAD_LEN1); 369 bus_space_unmap(sc->sc_iot, sc->mad_ioh2, MAD_LEN2); 370 bus_space_unmap(sc->sc_iot, sc->sc_opl_ioh, MAD_LEN3); 371 } 372
Indexes created Fri Sep 26 08:10:20 GMT 2025