1 /* $NetBSD: pas.c,v 1.7 1995/05/08 22:02:01 brezak Exp $ */ 2 3 /* 4 * Copyright (c) 1991-1993 Regents of the University of California. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the Computer Systems 18 * Engineering Group at Lawrence Berkeley Laboratory. 19 * 4. Neither the name of the University nor of the Laboratory may be used 20 * to endorse or promote products derived from this software without 21 * specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 */ 36 /* 37 * Todo: 38 * - look at other PAS drivers (for PAS native suport) 39 * - use common sb.c once emulation is setup 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 50 #include <machine/cpu.h> 51 #include <machine/pio.h> 52 53 #include <sys/audioio.h> 54 #include <dev/audio_if.h> 55 56 #include <dev/isa/isavar.h> 57 #include <dev/isa/isadmavar.h> 58 #include <i386/isa/icu.h> /* XXX BROKEN; WHY? */ 59 60 #include <dev/isa/sbdspvar.h> 61 #include <dev/isa/sbreg.h> 62 63 #define DEFINE_TRANSLATIONS 64 #include <dev/isa/pasreg.h> 65 66 #define DEBUG /*XXX*/ 67 #ifdef DEBUG 68 #define DPRINTF(x) if (pasdebug) printf x 69 int pasdebug = 0; 70 #else 71 #define DPRINTF(x) 72 #endif 73 74 /* 75 * Software state, per SoundBlaster card. 76 * The soundblaster has multiple functionality, which we must demultiplex. 77 * One approach is to have one major device number for the soundblaster card, 78 * and use different minor numbers to indicate which hardware function 79 * we want. This would make for one large driver. Instead our approach 80 * is to partition the design into a set of drivers that share an underlying 81 * piece of hardware. Most things are hard to share, for example, the audio 82 * and midi ports. For audio, we might want to mix two processes' signals, 83 * and for midi we might want to merge streams (this is hard due to 84 * running status). Moreover, we should be able to re-use the high-level 85 * modules with other kinds of hardware. In this module, we only handle the 86 * most basic communications with the sb card. 87 */ 88 struct pas_softc { 89 struct device sc_dev; /* base device */ 90 struct isadev sc_id; /* ISA device */ 91 void *sc_ih; /* interrupt vectoring */ 92 93 u_short sc_iobase; /* PAS iobase */ 94 u_short sc_irq; /* PAS irq */ 95 u_short sc_drq; /* PAS drq */ 96 97 int model; 98 int rev; 99 100 struct sbdsp_softc sc_sbdsp; 101 }; 102 103 int pasopen __P((dev_t, int)); 104 105 int pasprobe(); 106 void pasattach(); 107 108 int pas_getdev __P((void *, struct audio_device *)); 109 110 111 /* 112 * Define our interface to the higher level audio driver. 113 */ 114 115 struct audio_hw_if pas_hw_if = { 116 pasopen, 117 sbdsp_close, 118 NULL, 119 sbdsp_set_in_sr, 120 sbdsp_get_in_sr, 121 sbdsp_set_out_sr, 122 sbdsp_get_out_sr, 123 sbdsp_query_encoding, 124 sbdsp_set_encoding, 125 sbdsp_get_encoding, 126 sbdsp_set_precision, 127 sbdsp_get_precision, 128 sbdsp_set_channels, 129 sbdsp_get_channels, 130 sbdsp_round_blocksize, 131 sbdsp_set_out_port, 132 sbdsp_get_out_port, 133 sbdsp_set_in_port, 134 sbdsp_get_in_port, 135 sbdsp_commit_settings, 136 sbdsp_get_silence, 137 sbdsp_expand, 138 sbdsp_compress, 139 sbdsp_dma_output, 140 sbdsp_dma_input, 141 sbdsp_haltdma, 142 sbdsp_haltdma, 143 sbdsp_contdma, 144 sbdsp_contdma, 145 sbdsp_speaker_ctl, 146 pas_getdev, 147 sbdsp_setfd, 148 sbdsp_mixer_set_port, 149 sbdsp_mixer_get_port, 150 sbdsp_mixer_query_devinfo, 151 0, /* not full-duplex */ 152 0 153 }; 154 155 /* The Address Translation code is used to convert I/O register addresses to 156 be relative to the given base -register */ 157 158 static char *pasnames[] = { 159 "", 160 "Plus", 161 "CDPC", 162 "16", 163 "16Basic" 164 }; 165 166 static struct audio_device pas_device = { 167 "PAS,??", 168 "", 169 "pas" 170 }; 171 172 /*XXX assume default I/O base address */ 173 #define pasread(p) inb(p) 174 #define paswrite(d, p) outb(p, d) 175 176 void 177 pasconf(int model, int sbbase, int sbirq, int sbdrq) 178 { 179 int i; 180 181 paswrite(0x00, INTERRUPT_MASK); 182 /* Local timer control register */ 183 paswrite(0x36, SAMPLE_COUNTER_CONTROL); 184 /* Sample rate timer (16 bit) */ 185 paswrite(0x36, SAMPLE_RATE_TIMER); 186 paswrite(0, SAMPLE_RATE_TIMER); 187 /* Local timer control register */ 188 paswrite(0x74, SAMPLE_COUNTER_CONTROL); 189 /* Sample count register (16 bit) */ 190 paswrite(0x74, SAMPLE_BUFFER_COUNTER); 191 paswrite(0, SAMPLE_BUFFER_COUNTER); 192 193 paswrite(P_C_PCM_MONO | P_C_PCM_DAC_MODE | 194 P_C_MIXER_CROSS_L_TO_L | P_C_MIXER_CROSS_R_TO_R, 195 PCM_CONTROL); 196 paswrite(S_M_PCM_RESET | S_M_FM_RESET | 197 S_M_SB_RESET | S_M_MIXER_RESET, SERIAL_MIXER); 198 199 /*XXX*/ 200 paswrite(I_C_1_BOOT_RESET_ENABLE|1, IO_CONFIGURATION_1); 201 202 paswrite(I_C_2_PCM_DMA_DISABLED, IO_CONFIGURATION_2); 203 paswrite(I_C_3_PCM_IRQ_DISABLED, IO_CONFIGURATION_3); 204 205 #ifdef BROKEN_BUS_CLOCK 206 paswrite(S_C_1_PCS_ENABLE | S_C_1_PCS_STEREO | S_C_1_PCS_REALSOUND | 207 S_C_1_FM_EMULATE_CLOCK, SYSTEM_CONFIGURATION_1); 208 #else 209 paswrite(S_C_1_PCS_ENABLE | S_C_1_PCS_STEREO | S_C_1_PCS_REALSOUND, 210 SYSTEM_CONFIGURATION_1); 211 #endif 212 213 /*XXX*/ 214 paswrite(0, SYSTEM_CONFIGURATION_2); 215 paswrite(0, SYSTEM_CONFIGURATION_3); 216 217 /* Sets mute off and selects filter rate of 17.897 kHz */ 218 paswrite(F_F_MIXER_UNMUTE | 0x01, FILTER_FREQUENCY); 219 220 if (model == PAS_16 || model == PAS_16BASIC) 221 paswrite(8, PRESCALE_DIVIDER); 222 else 223 paswrite(0, PRESCALE_DIVIDER); 224 225 paswrite(P_M_MV508_ADDRESS | P_M_MV508_PCM, PARALLEL_MIXER); 226 paswrite(5, PARALLEL_MIXER); 227 228 /* 229 * Setup SoundBlaster emulation. 230 */ 231 paswrite((sbbase >> 4) & 0xf, EMULATION_ADDRESS); 232 paswrite(E_C_SB_IRQ_translate[sbirq] | E_C_SB_DMA_translate[sbdrq], 233 EMULATION_CONFIGURATION); 234 paswrite(C_E_SB_ENABLE, COMPATIBILITY_ENABLE); 235 236 /* 237 * Set mid-range levels. 238 */ 239 paswrite(P_M_MV508_ADDRESS | P_M_MV508_MODE, PARALLEL_MIXER); 240 paswrite(P_M_MV508_LOUDNESS | P_M_MV508_ENHANCE_NONE, PARALLEL_MIXER); 241 242 paswrite(P_M_MV508_ADDRESS | P_M_MV508_MASTER_A, PARALLEL_MIXER); 243 paswrite(50, PARALLEL_MIXER); 244 paswrite(P_M_MV508_ADDRESS | P_M_MV508_MASTER_B, PARALLEL_MIXER); 245 paswrite(50, PARALLEL_MIXER); 246 247 paswrite(P_M_MV508_ADDRESS | P_M_MV508_MIXER | P_M_MV508_SB, PARALLEL_MIXER); 248 paswrite(P_M_MV508_OUTPUTMIX | 30, PARALLEL_MIXER); 249 250 paswrite(P_M_MV508_ADDRESS | P_M_MV508_MIXER | P_M_MV508_MIC, PARALLEL_MIXER); 251 paswrite(P_M_MV508_INPUTMIX | 30, PARALLEL_MIXER); 252 } 253 254 struct cfdriver pascd = { 255 NULL, "pas", pasprobe, pasattach, DV_DULL, sizeof(struct pas_softc) 256 }; 257 258 /* 259 * Probe / attach routines. 260 */ 261 262 /* 263 * Probe for the soundblaster hardware. 264 */ 265 int 266 pasprobe(parent, self, aux) 267 struct device *parent, *self; 268 void *aux; 269 { 270 register struct pas_softc *sc = (void *)self; 271 register struct isa_attach_args *ia = aux; 272 register u_short iobase; 273 u_char id, t; 274 275 /* 276 * WARNING: Setting an option like W:1 or so that disables 277 * warm boot reset of the card will screw up this detect code 278 * something fierce. Adding code to handle this means possibly 279 * interfering with other cards on the bus if you have something 280 * on base port 0x388. SO be forewarned. 281 */ 282 /* Talk to first board */ 283 outb(MASTER_DECODE, 0xbc); 284 /* Set base address */ 285 286 #if 0 287 /* XXX Need to setup pseudo device */ 288 /* XXX What are good io addrs ? */ 289 if (iobase != PAS_DEFAULT_BASE) { 290 printf("pas: configured iobase %d invalid\n", iobase); 291 return 0; 292 } 293 #else 294 /* Start out talking to native PAS */ 295 iobase = PAS_DEFAULT_BASE; 296 #endif 297 298 outb(MASTER_DECODE, iobase >> 2); 299 /* One wait-state */ 300 paswrite(1, WAIT_STATE); 301 302 id = pasread(INTERRUPT_MASK); 303 if (id == 0xff || id == 0xfe) { 304 /* sanity */ 305 DPRINTF(("pas: bogus card id\n")); 306 return 0; 307 } 308 /* 309 * We probably have a PAS-series board, now check for a 310 * PAS2-series board by trying to change the board revision 311 * bits. PAS2-series hardware won't let you do this because 312 * the bits are read-only. 313 */ 314 t = id ^ 0xe0; 315 paswrite(t, INTERRUPT_MASK); 316 t = inb(INTERRUPT_MASK); 317 paswrite(id, INTERRUPT_MASK); 318 319 if (t != id) { 320 /* Not a PAS2 */ 321 printf("pas: detected card but PAS2 test failed\n"); 322 return 0; 323 } 324 /*XXX*/ 325 t = pasread(OPERATION_MODE_1) & 0xf; 326 sc->model = O_M_1_to_card[t]; 327 if (sc->model != 0) { 328 sc->rev = pasread(BOARD_REV_ID); 329 } 330 else { 331 DPRINTF(("pas: bogus model id\n")); 332 return 0; 333 } 334 335 if (sc->model >= 0) { 336 int irq = ia->ia_irq; 337 if (irq == IRQUNK) { 338 printf("pas: sb emulation requires known irq\n"); 339 return (0); 340 } 341 irq = ia->ia_irq; 342 pasconf(sc->model, ia->ia_iobase, irq, 1); 343 } else { 344 DPRINTF(("pas: could not probe pas\n")); 345 return (0); 346 } 347 348 /* Now a SoundBlaster */ 349 sc->sc_iobase = ia->ia_iobase; 350 /* and set the SB iobase into the DSP as well ... */ 351 sc->sc_sbdsp.sc_iobase = ia->ia_iobase; 352 if (sbdsp_reset(&sc->sc_sbdsp) < 0) { 353 DPRINTF(("pas: couldn't reset card\n")); 354 return 0; 355 } 356 357 /* 358 * Cannot auto-discover DMA channel. 359 */ 360 if (!SB_DRQ_VALID(ia->ia_drq)) { 361 printf("pas: configured dma chan %d invalid\n", ia->ia_drq); 362 return 0; 363 } 364 #ifdef NEWCONFIG 365 /* 366 * If the IRQ wasn't compiled in, auto-detect it. 367 */ 368 if (ia->ia_irq == IRQUNK) { 369 ia->ia_irq = isa_discoverintr(pasforceintr, aux); 370 sbdsp_reset(&sc->sc_sbdsp); 371 if (!SB_IRQ_VALID(ia->ia_irq)) { 372 printf("pas: couldn't auto-detect interrupt"); 373 return 0; 374 } 375 } else 376 #endif 377 if (!SB_IRQ_VALID(ia->ia_irq)) { 378 int irq = ia->ia_irq; 379 printf("pas: configured irq %d invalid\n", irq); 380 return 0; 381 } 382 383 sc->sc_sbdsp.sc_irq = ia->ia_irq; 384 sc->sc_sbdsp.sc_drq = ia->ia_drq; 385 386 if (sbdsp_probe(&sc->sc_sbdsp) == 0) { 387 DPRINTF(("pas: sbdsp probe failed\n")); 388 return 0; 389 } 390 391 ia->ia_iosize = SB_NPORT; 392 return 1; 393 } 394 395 #ifdef NEWCONFIG 396 void 397 pasforceintr(aux) 398 void *aux; 399 { 400 static char dmabuf; 401 struct isa_attach_args *ia = aux; 402 u_short iobase = ia->ia_iobase; 403 404 /* 405 * Set up a DMA read of one byte. 406 * XXX Note that at this point we haven't called 407 * at_setup_dmachan(). This is okay because it just 408 * allocates a buffer in case it needs to make a copy, 409 * and it won't need to make a copy for a 1 byte buffer. 410 * (I think that calling at_setup_dmachan() should be optional; 411 * if you don't call it, it will be called the first time 412 * it is needed (and you pay the latency). Also, you might 413 * never need the buffer anyway.) 414 */ 415 at_dma(1, &dmabuf, 1, ia->ia_drq); 416 if (pas_wdsp(iobase, SB_DSP_RDMA) == 0) { 417 (void)pas_wdsp(iobase, 0); 418 (void)pas_wdsp(iobase, 0); 419 } 420 } 421 #endif 422 423 /* 424 * Attach hardware to driver, attach hardware driver to audio 425 * pseudo-device driver . 426 */ 427 void 428 pasattach(parent, self, aux) 429 struct device *parent, *self; 430 void *aux; 431 { 432 register struct pas_softc *sc = (struct pas_softc *)self; 433 struct isa_attach_args *ia = (struct isa_attach_args *)aux; 434 register u_short iobase = ia->ia_iobase; 435 436 sc->sc_iobase = iobase; 437 438 #ifdef NEWCONFIG 439 isa_establish(&sc->sc_id, &sc->sc_dev); 440 #endif 441 sc->sc_ih = isa_intr_establish(ia->ia_irq, ISA_IST_EDGE, ISA_IPL_BIO, 442 sbdsp_intr, &sc->sc_sbdsp); 443 444 #ifdef NEWCONFIG 445 /* 446 * We limit DMA transfers to a page, and use the generic DMA handling 447 * code in isa.c. This code can end up copying a buffer, but since 448 * the audio driver uses relative small buffers this isn't likely. 449 * 450 * This allocation scheme means that the maximum transfer is limited 451 * by the page size (rather than 64k). This is reasonable. For 4K 452 * pages, the transfer time at 48KHz is 4096 / 48000 = 85ms. This 453 * is plenty long enough to amortize any fixed time overhead. 454 */ 455 at_setup_dmachan(sc->sc_dmachan, NBPG); 456 #endif 457 458 printf(" ProAudio Spectrum %s [rev %d] ", pasnames[sc->model], sc->rev); 459 460 sbdsp_attach(&sc->sc_sbdsp); 461 462 sprintf(pas_device.name, "pas,%s", pasnames[sc->model]); 463 sprintf(pas_device.version, "%d", sc->rev); 464 465 if (audio_hardware_attach(&pas_hw_if, &sc->sc_sbdsp) != 0) 466 printf("pas: could not attach to audio pseudo-device driver\n"); 467 } 468 469 int 470 pasopen(dev, flags) 471 dev_t dev; 472 int flags; 473 { 474 struct pas_softc *sc; 475 int unit = AUDIOUNIT(dev); 476 477 if (unit >= pascd.cd_ndevs) 478 return ENODEV; 479 480 sc = pascd.cd_devs[unit]; 481 if (!sc) 482 return ENXIO; 483 484 return sbdsp_open(&sc->sc_sbdsp, dev, flags); 485 } 486 487 int 488 pas_getdev(addr, retp) 489 void *addr; 490 struct audio_device *retp; 491 { 492 *retp = pas_device; 493 return 0; 494 } 495