pas.c revision 1.21
1/* $NetBSD: pas.c,v 1.21 1997/03/13 02:20:02 mycroft 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/intr.h> 52#include <machine/pio.h> 53 54#include <sys/audioio.h> 55#include <dev/audio_if.h> 56#include <dev/mulaw.h> 57 58#include <dev/isa/isavar.h> 59#include <dev/isa/isadmavar.h> 60 61#include <dev/isa/sbdspvar.h> 62#include <dev/isa/sbreg.h> 63 64#define DEFINE_TRANSLATIONS 65#include <dev/isa/pasreg.h> 66 67#ifdef AUDIO_DEBUG 68#define DPRINTF(x) if (pasdebug) printf x 69int 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 */ 88struct pas_softc { 89 struct sbdsp_softc sc_sbdsp; /* base device, &c. */ 90 91 int model; 92 int rev; 93}; 94 95int pasopen __P((dev_t, int)); 96int pas_getdev __P((void *, struct audio_device *)); 97void pasconf __P((int, int, int, int)); 98 99 100/* 101 * Define our interface to the higher level audio driver. 102 */ 103 104struct audio_hw_if pas_hw_if = { 105 pasopen, 106 sbdsp_close, 107 NULL, 108 sbdsp_set_in_sr, 109 sbdsp_get_in_sr, 110 sbdsp_set_out_sr, 111 sbdsp_get_out_sr, 112 sbdsp_query_encoding, 113 sbdsp_set_encoding, 114 sbdsp_get_encoding, 115 sbdsp_set_precision, 116 sbdsp_get_precision, 117 sbdsp_set_channels, 118 sbdsp_get_channels, 119 sbdsp_round_blocksize, 120 sbdsp_set_out_port, 121 sbdsp_get_out_port, 122 sbdsp_set_in_port, 123 sbdsp_get_in_port, 124 sbdsp_commit_settings, 125 mulaw_expand, 126 mulaw_compress, 127 sbdsp_dma_output, 128 sbdsp_dma_input, 129 sbdsp_haltdma, 130 sbdsp_haltdma, 131 sbdsp_contdma, 132 sbdsp_contdma, 133 sbdsp_speaker_ctl, 134 pas_getdev, 135 sbdsp_setfd, 136 sbdsp_mixer_set_port, 137 sbdsp_mixer_get_port, 138 sbdsp_mixer_query_devinfo, 139 0, /* not full-duplex */ 140 0 141}; 142 143/* The Address Translation code is used to convert I/O register addresses to 144 be relative to the given base -register */ 145 146static char *pasnames[] = { 147 "", 148 "Plus", 149 "CDPC", 150 "16", 151 "16Basic" 152}; 153 154static struct audio_device pas_device = { 155 "PAS,??", 156 "", 157 "pas" 158}; 159 160/*XXX assume default I/O base address */ 161#define pasread(p) inb(p) 162#define paswrite(d, p) outb(p, d) 163 164void 165pasconf(model, sbbase, sbirq, sbdrq) 166 int model; 167 int sbbase; 168 int sbirq; 169 int sbdrq; 170{ 171 paswrite(0x00, INTERRUPT_MASK); 172 /* Local timer control register */ 173 paswrite(0x36, SAMPLE_COUNTER_CONTROL); 174 /* Sample rate timer (16 bit) */ 175 paswrite(0x36, SAMPLE_RATE_TIMER); 176 paswrite(0, SAMPLE_RATE_TIMER); 177 /* Local timer control register */ 178 paswrite(0x74, SAMPLE_COUNTER_CONTROL); 179 /* Sample count register (16 bit) */ 180 paswrite(0x74, SAMPLE_BUFFER_COUNTER); 181 paswrite(0, SAMPLE_BUFFER_COUNTER); 182 183 paswrite(P_C_PCM_MONO | P_C_PCM_DAC_MODE | 184 P_C_MIXER_CROSS_L_TO_L | P_C_MIXER_CROSS_R_TO_R, 185 PCM_CONTROL); 186 paswrite(S_M_PCM_RESET | S_M_FM_RESET | 187 S_M_SB_RESET | S_M_MIXER_RESET, SERIAL_MIXER); 188 189/*XXX*/ 190 paswrite(I_C_1_BOOT_RESET_ENABLE|1, IO_CONFIGURATION_1); 191 192 paswrite(I_C_2_PCM_DMA_DISABLED, IO_CONFIGURATION_2); 193 paswrite(I_C_3_PCM_IRQ_DISABLED, IO_CONFIGURATION_3); 194 195#ifdef BROKEN_BUS_CLOCK 196 paswrite(S_C_1_PCS_ENABLE | S_C_1_PCS_STEREO | S_C_1_PCS_REALSOUND | 197 S_C_1_FM_EMULATE_CLOCK, SYSTEM_CONFIGURATION_1); 198#else 199 paswrite(S_C_1_PCS_ENABLE | S_C_1_PCS_STEREO | S_C_1_PCS_REALSOUND, 200 SYSTEM_CONFIGURATION_1); 201#endif 202 203 /*XXX*/ 204 paswrite(0, SYSTEM_CONFIGURATION_2); 205 paswrite(0, SYSTEM_CONFIGURATION_3); 206 207 /* Sets mute off and selects filter rate of 17.897 kHz */ 208 paswrite(F_F_MIXER_UNMUTE | 0x01, FILTER_FREQUENCY); 209 210 if (model == PAS_16 || model == PAS_16BASIC) 211 paswrite(8, PRESCALE_DIVIDER); 212 else 213 paswrite(0, PRESCALE_DIVIDER); 214 215 paswrite(P_M_MV508_ADDRESS | P_M_MV508_PCM, PARALLEL_MIXER); 216 paswrite(5, PARALLEL_MIXER); 217 218 /* 219 * Setup SoundBlaster emulation. 220 */ 221 paswrite((sbbase >> 4) & 0xf, EMULATION_ADDRESS); 222 paswrite(E_C_SB_IRQ_translate[sbirq] | E_C_SB_DMA_translate[sbdrq], 223 EMULATION_CONFIGURATION); 224 paswrite(C_E_SB_ENABLE, COMPATIBILITY_ENABLE); 225 226 /* 227 * Set mid-range levels. 228 */ 229 paswrite(P_M_MV508_ADDRESS | P_M_MV508_MODE, PARALLEL_MIXER); 230 paswrite(P_M_MV508_LOUDNESS | P_M_MV508_ENHANCE_NONE, PARALLEL_MIXER); 231 232 paswrite(P_M_MV508_ADDRESS | P_M_MV508_MASTER_A, PARALLEL_MIXER); 233 paswrite(50, PARALLEL_MIXER); 234 paswrite(P_M_MV508_ADDRESS | P_M_MV508_MASTER_B, PARALLEL_MIXER); 235 paswrite(50, PARALLEL_MIXER); 236 237 paswrite(P_M_MV508_ADDRESS | P_M_MV508_MIXER | P_M_MV508_SB, PARALLEL_MIXER); 238 paswrite(P_M_MV508_OUTPUTMIX | 30, PARALLEL_MIXER); 239 240 paswrite(P_M_MV508_ADDRESS | P_M_MV508_MIXER | P_M_MV508_MIC, PARALLEL_MIXER); 241 paswrite(P_M_MV508_INPUTMIX | 30, PARALLEL_MIXER); 242} 243 244int pasprobe __P((struct device *, void *, void *)); 245void pasattach __P((struct device *, struct device *, void *)); 246 247struct cfattach pas_ca = { 248 sizeof(struct pas_softc), pasprobe, pasattach 249}; 250 251struct cfdriver pas_cd = { 252 NULL, "pas", DV_DULL 253}; 254 255/* 256 * Probe / attach routines. 257 */ 258 259/* 260 * Probe for the soundblaster hardware. 261 */ 262int 263pasprobe(parent, match, aux) 264 struct device *parent; 265 void *match, *aux; 266{ 267 register struct pas_softc *sc = match; 268 register struct isa_attach_args *ia = aux; 269 register int iobase; 270 u_char id, t; 271 272 /* 273 * WARNING: Setting an option like W:1 or so that disables 274 * warm boot reset of the card will screw up this detect code 275 * something fierce. Adding code to handle this means possibly 276 * interfering with other cards on the bus if you have something 277 * on base port 0x388. SO be forewarned. 278 */ 279 /* Talk to first board */ 280 outb(MASTER_DECODE, 0xbc); 281 /* Set base address */ 282 283#if 0 284 /* XXX Need to setup pseudo device */ 285 /* XXX What are good io addrs ? */ 286 if (iobase != PAS_DEFAULT_BASE) { 287 printf("pas: configured iobase %d invalid\n", iobase); 288 return 0; 289 } 290#else 291 /* Start out talking to native PAS */ 292 iobase = PAS_DEFAULT_BASE; 293#endif 294 295 outb(MASTER_DECODE, iobase >> 2); 296 /* One wait-state */ 297 paswrite(1, WAIT_STATE); 298 299 id = pasread(INTERRUPT_MASK); 300 if (id == 0xff || id == 0xfe) { 301 /* sanity */ 302 DPRINTF(("pas: bogus card id\n")); 303 return 0; 304 } 305 /* 306 * We probably have a PAS-series board, now check for a 307 * PAS2-series board by trying to change the board revision 308 * bits. PAS2-series hardware won't let you do this because 309 * the bits are read-only. 310 */ 311 t = id ^ 0xe0; 312 paswrite(t, INTERRUPT_MASK); 313 t = inb(INTERRUPT_MASK); 314 paswrite(id, INTERRUPT_MASK); 315 316 if (t != id) { 317 /* Not a PAS2 */ 318 printf("pas: detected card but PAS2 test failed\n"); 319 return 0; 320 } 321 /*XXX*/ 322 t = pasread(OPERATION_MODE_1) & 0xf; 323 sc->model = O_M_1_to_card[t]; 324 if (sc->model != 0) { 325 sc->rev = pasread(BOARD_REV_ID); 326 } 327 else { 328 DPRINTF(("pas: bogus model id\n")); 329 return 0; 330 } 331 332 if (sc->model >= 0) { 333 if (ia->ia_irq == IRQUNK) { 334 printf("pas: sb emulation requires known irq\n"); 335 return (0); 336 } 337 pasconf(sc->model, ia->ia_iobase, ia->ia_irq, 1); 338 } else { 339 DPRINTF(("pas: could not probe pas\n")); 340 return (0); 341 } 342 343 /* Now a SoundBlaster */ 344 sc->sc_sbdsp.sc_iobase = ia->ia_iobase; 345 if (sbdsp_reset(&sc->sc_sbdsp) < 0) { 346 DPRINTF(("pas: couldn't reset card\n")); 347 return 0; 348 } 349 350 /* 351 * Cannot auto-discover DMA channel. 352 */ 353 if (!SB_DRQ_VALID(ia->ia_drq)) { 354 printf("pas: configured dma chan %d invalid\n", ia->ia_drq); 355 return 0; 356 } 357#ifdef NEWCONFIG 358 /* 359 * If the IRQ wasn't compiled in, auto-detect it. 360 */ 361 if (ia->ia_irq == IRQUNK) { 362 ia->ia_irq = isa_discoverintr(pasforceintr, aux); 363 sbdsp_reset(&sc->sc_sbdsp); 364 if (!SB_IRQ_VALID(ia->ia_irq)) { 365 printf("pas: couldn't auto-detect interrupt"); 366 return 0; 367 } 368 } else 369#endif 370 if (!SB_IRQ_VALID(ia->ia_irq)) { 371 printf("pas: configured irq chan %d invalid\n", ia->ia_irq); 372 return 0; 373 } 374 375 sc->sc_sbdsp.sc_irq = ia->ia_irq; 376 sc->sc_sbdsp.sc_drq = ia->ia_drq; 377 378 if (sbdsp_probe(&sc->sc_sbdsp) == 0) { 379 DPRINTF(("pas: sbdsp probe failed\n")); 380 return 0; 381 } 382 383 ia->ia_iosize = SB_NPORT; 384 return 1; 385} 386 387#ifdef NEWCONFIG 388void 389pasforceintr(aux) 390 void *aux; 391{ 392 static char dmabuf; 393 struct isa_attach_args *ia = aux; 394 int iobase = ia->ia_iobase; 395 396 /* 397 * Set up a DMA read of one byte. 398 * XXX Note that at this point we haven't called 399 * at_setup_dmachan(). This is okay because it just 400 * allocates a buffer in case it needs to make a copy, 401 * and it won't need to make a copy for a 1 byte buffer. 402 * (I think that calling at_setup_dmachan() should be optional; 403 * if you don't call it, it will be called the first time 404 * it is needed (and you pay the latency). Also, you might 405 * never need the buffer anyway.) 406 */ 407 at_dma(DMAMODE_READ, &dmabuf, 1, ia->ia_drq); 408 if (pas_wdsp(iobase, SB_DSP_RDMA) == 0) { 409 (void)pas_wdsp(iobase, 0); 410 (void)pas_wdsp(iobase, 0); 411 } 412} 413#endif 414 415/* 416 * Attach hardware to driver, attach hardware driver to audio 417 * pseudo-device driver . 418 */ 419void 420pasattach(parent, self, aux) 421 struct device *parent, *self; 422 void *aux; 423{ 424 register struct pas_softc *sc = (struct pas_softc *)self; 425 struct isa_attach_args *ia = (struct isa_attach_args *)aux; 426 register int iobase = ia->ia_iobase; 427 int err; 428 429 sc->sc_sbdsp.sc_iobase = iobase; 430 sc->sc_sbdsp.sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, 431 IST_EDGE, IPL_AUDIO, sbdsp_intr, &sc->sc_sbdsp); 432 433 printf(" ProAudio Spectrum %s [rev %d] ", pasnames[sc->model], 434 sc->rev); 435 436 sbdsp_attach(&sc->sc_sbdsp); 437 438 sprintf(pas_device.name, "pas,%s", pasnames[sc->model]); 439 sprintf(pas_device.version, "%d", sc->rev); 440 441 if ((err = audio_hardware_attach(&pas_hw_if, &sc->sc_sbdsp)) != 0) 442 printf("pas: could not attach to audio pseudo-device driver (%d)\n", err); 443} 444 445int 446pasopen(dev, flags) 447 dev_t dev; 448 int flags; 449{ 450 struct pas_softc *sc; 451 int unit = AUDIOUNIT(dev); 452 453 if (unit >= pas_cd.cd_ndevs) 454 return ENODEV; 455 456 sc = pas_cd.cd_devs[unit]; 457 if (!sc) 458 return ENXIO; 459 460 return sbdsp_open(&sc->sc_sbdsp, dev, flags); 461} 462 463int 464pas_getdev(addr, retp) 465 void *addr; 466 struct audio_device *retp; 467{ 468 *retp = pas_device; 469 return 0; 470} 471