1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2000 Orion Hodson <O.Hodson@cs.ucl.ac.uk> 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 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHERIN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THEPOSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 /* 30 * The order of pokes in the initiation sequence is based on Linux 31 * driver by Thomas Sailer, gw boynton (wesb@crystal.cirrus.com), tom 32 * woller (twoller@crystal.cirrus.com). Shingo Watanabe (nabe@nabechan.org) 33 * contributed towards power management. 34 */ 35 36 #ifdef HAVE_KERNEL_OPTION_HEADERS 37 #include "opt_snd.h" 38 #endif 39 40 #include <dev/sound/pcm/sound.h> 41 #include <dev/sound/pcm/ac97.h> 42 43 #include <dev/pci/pcireg.h> 44 #include <dev/pci/pcivar.h> 45 46 #include <dev/sound/pci/cs4281.h> 47 48 #define CS4281_DEFAULT_BUFSZ 16384 49 50 /* Max fifo size for full duplex is 64 */ 51 #define CS4281_FIFO_SIZE 15 52 53 /* DMA Engine Indices */ 54 #define CS4281_DMA_PLAY 0 55 #define CS4281_DMA_REC 1 56 57 /* Misc */ 58 59 #define inline __inline 60 61 #ifndef DEB 62 #define DEB(x) /* x */ 63 #endif /* DEB */ 64 65 /* ------------------------------------------------------------------------- */ 66 /* Structures */ 67 68 struct sc_info; 69 70 /* channel registers */ 71 struct sc_chinfo { 72 struct sc_info *parent; 73 74 struct snd_dbuf *buffer; 75 struct pcm_channel *channel; 76 77 u_int32_t spd, fmt, bps, blksz; 78 79 int dma_setup, dma_active, dma_chan; 80 }; 81 82 /* device private data */ 83 struct sc_info { 84 device_t dev; 85 u_int32_t type; 86 87 bus_space_tag_t st; 88 bus_space_handle_t sh; 89 bus_dma_tag_t parent_dmat; 90 91 struct resource *reg, *irq, *mem; 92 int regtype, regid, irqid, memid; 93 void *ih; 94 95 int power; 96 unsigned long bufsz; 97 struct sc_chinfo pch; 98 struct sc_chinfo rch; 99 }; 100 101 /* -------------------------------------------------------------------- */ 102 /* prototypes */ 103 104 /* ADC/DAC control */ 105 static u_int32_t adcdac_go(struct sc_chinfo *ch, u_int32_t go); 106 static void adcdac_prog(struct sc_chinfo *ch); 107 108 /* power management and interrupt control */ 109 static void cs4281_intr(void *); 110 static int cs4281_power(struct sc_info *, int); 111 static int cs4281_init(struct sc_info *); 112 113 /* talk to the card */ 114 static u_int32_t cs4281_rd(struct sc_info *, int); 115 static void cs4281_wr(struct sc_info *, int, u_int32_t); 116 117 /* misc */ 118 static u_int8_t cs4281_rate_to_rv(u_int32_t); 119 static u_int32_t cs4281_format_to_dmr(u_int32_t); 120 static u_int32_t cs4281_format_to_bps(u_int32_t); 121 122 /* -------------------------------------------------------------------- */ 123 /* formats (do not add formats without editing cs_fmt_tab) */ 124 125 static u_int32_t cs4281_fmts[] = { 126 SND_FORMAT(AFMT_U8, 1, 0), 127 SND_FORMAT(AFMT_U8, 2, 0), 128 SND_FORMAT(AFMT_S8, 1, 0), 129 SND_FORMAT(AFMT_S8, 2, 0), 130 SND_FORMAT(AFMT_S16_LE, 1, 0), 131 SND_FORMAT(AFMT_S16_LE, 2, 0), 132 SND_FORMAT(AFMT_U16_LE, 1, 0), 133 SND_FORMAT(AFMT_U16_LE, 2, 0), 134 SND_FORMAT(AFMT_S16_BE, 1, 0), 135 SND_FORMAT(AFMT_S16_BE, 2, 0), 136 SND_FORMAT(AFMT_U16_BE, 1, 0), 137 SND_FORMAT(AFMT_U16_BE, 2, 0), 138 0 139 }; 140 141 static struct pcmchan_caps cs4281_caps = {6024, 48000, cs4281_fmts, 0}; 142 143 /* -------------------------------------------------------------------- */ 144 /* Hardware */ 145 146 static inline u_int32_t 147 cs4281_rd(struct sc_info *sc, int regno) 148 { 149 return bus_space_read_4(sc->st, sc->sh, regno); 150 } 151 152 static inline void 153 cs4281_wr(struct sc_info *sc, int regno, u_int32_t data) 154 { 155 bus_space_write_4(sc->st, sc->sh, regno, data); 156 DELAY(100); 157 } 158 159 static inline void 160 cs4281_clr4(struct sc_info *sc, int regno, u_int32_t mask) 161 { 162 u_int32_t r; 163 r = cs4281_rd(sc, regno); 164 cs4281_wr(sc, regno, r & ~mask); 165 } 166 167 static inline void 168 cs4281_set4(struct sc_info *sc, int regno, u_int32_t mask) 169 { 170 u_int32_t v; 171 v = cs4281_rd(sc, regno); 172 cs4281_wr(sc, regno, v | mask); 173 } 174 175 static int 176 cs4281_waitset(struct sc_info *sc, int regno, u_int32_t mask, int tries) 177 { 178 u_int32_t v; 179 180 while (tries > 0) { 181 DELAY(100); 182 v = cs4281_rd(sc, regno); 183 if ((v & mask) == mask) break; 184 tries --; 185 } 186 return tries; 187 } 188 189 static int 190 cs4281_waitclr(struct sc_info *sc, int regno, u_int32_t mask, int tries) 191 { 192 u_int32_t v; 193 194 while (tries > 0) { 195 DELAY(100); 196 v = ~ cs4281_rd(sc, regno); 197 if (v & mask) break; 198 tries --; 199 } 200 return tries; 201 } 202 203 /* ------------------------------------------------------------------------- */ 204 /* Register value mapping functions */ 205 206 static u_int32_t cs4281_rates[] = {48000, 44100, 22050, 16000, 11025, 8000}; 207 #define CS4281_NUM_RATES sizeof(cs4281_rates)/sizeof(cs4281_rates[0]) 208 209 static u_int8_t 210 cs4281_rate_to_rv(u_int32_t rate) 211 { 212 u_int32_t v; 213 214 for (v = 0; v < CS4281_NUM_RATES; v++) { 215 if (rate == cs4281_rates[v]) return v; 216 } 217 218 v = 1536000 / rate; 219 if (v > 255 || v < 32) v = 5; /* default to 8k */ 220 return v; 221 } 222 223 static u_int32_t 224 cs4281_rv_to_rate(u_int8_t rv) 225 { 226 u_int32_t r; 227 228 if (rv < CS4281_NUM_RATES) return cs4281_rates[rv]; 229 r = 1536000 / rv; 230 return r; 231 } 232 233 static inline u_int32_t 234 cs4281_format_to_dmr(u_int32_t format) 235 { 236 u_int32_t dmr = 0; 237 if (AFMT_8BIT & format) dmr |= CS4281PCI_DMR_SIZE8; 238 if (AFMT_CHANNEL(format) < 2) dmr |= CS4281PCI_DMR_MONO; 239 if (AFMT_BIGENDIAN & format) dmr |= CS4281PCI_DMR_BEND; 240 if (!(AFMT_SIGNED & format)) dmr |= CS4281PCI_DMR_USIGN; 241 return dmr; 242 } 243 244 static inline u_int32_t 245 cs4281_format_to_bps(u_int32_t format) 246 { 247 return ((AFMT_8BIT & format) ? 1 : 2) * 248 ((AFMT_CHANNEL(format) > 1) ? 2 : 1); 249 } 250 251 /* -------------------------------------------------------------------- */ 252 /* ac97 codec */ 253 254 static int 255 cs4281_rdcd(kobj_t obj, void *devinfo, int regno) 256 { 257 struct sc_info *sc = (struct sc_info *)devinfo; 258 259 regno &= 0xff; 260 261 /* Remove old state */ 262 cs4281_rd(sc, CS4281PCI_ACSDA); 263 264 /* Fill in AC97 register value request form */ 265 cs4281_wr(sc, CS4281PCI_ACCAD, regno); 266 cs4281_wr(sc, CS4281PCI_ACCDA, 0); 267 cs4281_wr(sc, CS4281PCI_ACCTL, CS4281PCI_ACCTL_ESYN | 268 CS4281PCI_ACCTL_VFRM | CS4281PCI_ACCTL_DCV | 269 CS4281PCI_ACCTL_CRW); 270 271 /* Wait for read to complete */ 272 if (cs4281_waitclr(sc, CS4281PCI_ACCTL, CS4281PCI_ACCTL_DCV, 250) == 0) { 273 device_printf(sc->dev, "cs4281_rdcd: DCV did not go\n"); 274 return -1; 275 } 276 277 /* Wait for valid status */ 278 if (cs4281_waitset(sc, CS4281PCI_ACSTS, CS4281PCI_ACSTS_VSTS, 250) == 0) { 279 device_printf(sc->dev,"cs4281_rdcd: VSTS did not come\n"); 280 return -1; 281 } 282 283 return cs4281_rd(sc, CS4281PCI_ACSDA); 284 } 285 286 static int 287 cs4281_wrcd(kobj_t obj, void *devinfo, int regno, u_int32_t data) 288 { 289 struct sc_info *sc = (struct sc_info *)devinfo; 290 291 regno &= 0xff; 292 293 cs4281_wr(sc, CS4281PCI_ACCAD, regno); 294 cs4281_wr(sc, CS4281PCI_ACCDA, data); 295 cs4281_wr(sc, CS4281PCI_ACCTL, CS4281PCI_ACCTL_ESYN | 296 CS4281PCI_ACCTL_VFRM | CS4281PCI_ACCTL_DCV); 297 298 if (cs4281_waitclr(sc, CS4281PCI_ACCTL, CS4281PCI_ACCTL_DCV, 250) == 0) { 299 device_printf(sc->dev,"cs4281_wrcd: DCV did not go\n"); 300 } 301 302 return 0; 303 } 304 305 static kobj_method_t cs4281_ac97_methods[] = { 306 KOBJMETHOD(ac97_read, cs4281_rdcd), 307 KOBJMETHOD(ac97_write, cs4281_wrcd), 308 KOBJMETHOD_END 309 }; 310 AC97_DECLARE(cs4281_ac97); 311 312 /* ------------------------------------------------------------------------- */ 313 /* shared rec/play channel interface */ 314 315 static void * 316 cs4281chan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b, struct pcm_channel *c, int dir) 317 { 318 struct sc_info *sc = devinfo; 319 struct sc_chinfo *ch = (dir == PCMDIR_PLAY) ? &sc->pch : &sc->rch; 320 321 ch->buffer = b; 322 if (sndbuf_alloc(ch->buffer, sc->parent_dmat, 0, sc->bufsz) != 0) { 323 return NULL; 324 } 325 ch->parent = sc; 326 ch->channel = c; 327 328 ch->fmt = SND_FORMAT(AFMT_U8, 1, 0); 329 ch->spd = DSP_DEFAULT_SPEED; 330 ch->bps = 1; 331 ch->blksz = sndbuf_getsize(ch->buffer); 332 333 ch->dma_chan = (dir == PCMDIR_PLAY) ? CS4281_DMA_PLAY : CS4281_DMA_REC; 334 ch->dma_setup = 0; 335 336 adcdac_go(ch, 0); 337 adcdac_prog(ch); 338 339 return ch; 340 } 341 342 static u_int32_t 343 cs4281chan_setblocksize(kobj_t obj, void *data, u_int32_t blocksize) 344 { 345 struct sc_chinfo *ch = data; 346 struct sc_info *sc = ch->parent; 347 u_int32_t go; 348 349 go = adcdac_go(ch, 0); 350 351 /* 2 interrupts are possible and used in buffer (half-empty,empty), 352 * hence factor of 2. */ 353 ch->blksz = MIN(blocksize, sc->bufsz / 2); 354 sndbuf_resize(ch->buffer, 2, ch->blksz); 355 ch->dma_setup = 0; 356 adcdac_prog(ch); 357 adcdac_go(ch, go); 358 359 DEB(printf("cs4281chan_setblocksize: blksz %d Setting %d\n", blocksize, ch->blksz)); 360 361 return ch->blksz; 362 } 363 364 static u_int32_t 365 cs4281chan_setspeed(kobj_t obj, void *data, u_int32_t speed) 366 { 367 struct sc_chinfo *ch = data; 368 struct sc_info *sc = ch->parent; 369 u_int32_t go, v, r; 370 371 go = adcdac_go(ch, 0); /* pause */ 372 r = (ch->dma_chan == CS4281_DMA_PLAY) ? CS4281PCI_DACSR : CS4281PCI_ADCSR; 373 v = cs4281_rate_to_rv(speed); 374 cs4281_wr(sc, r, v); 375 adcdac_go(ch, go); /* unpause */ 376 377 ch->spd = cs4281_rv_to_rate(v); 378 return ch->spd; 379 } 380 381 static int 382 cs4281chan_setformat(kobj_t obj, void *data, u_int32_t format) 383 { 384 struct sc_chinfo *ch = data; 385 struct sc_info *sc = ch->parent; 386 u_int32_t v, go; 387 388 go = adcdac_go(ch, 0); /* pause */ 389 390 if (ch->dma_chan == CS4281_DMA_PLAY) 391 v = CS4281PCI_DMR_TR_PLAY; 392 else 393 v = CS4281PCI_DMR_TR_REC; 394 v |= CS4281PCI_DMR_DMA | CS4281PCI_DMR_AUTO; 395 v |= cs4281_format_to_dmr(format); 396 cs4281_wr(sc, CS4281PCI_DMR(ch->dma_chan), v); 397 398 adcdac_go(ch, go); /* unpause */ 399 400 ch->fmt = format; 401 ch->bps = cs4281_format_to_bps(format); 402 ch->dma_setup = 0; 403 404 return 0; 405 } 406 407 static u_int32_t 408 cs4281chan_getptr(kobj_t obj, void *data) 409 { 410 struct sc_chinfo *ch = data; 411 struct sc_info *sc = ch->parent; 412 u_int32_t dba, dca, ptr; 413 int sz; 414 415 sz = sndbuf_getsize(ch->buffer); 416 dba = cs4281_rd(sc, CS4281PCI_DBA(ch->dma_chan)); 417 dca = cs4281_rd(sc, CS4281PCI_DCA(ch->dma_chan)); 418 ptr = (dca - dba + sz) % sz; 419 420 return ptr; 421 } 422 423 static int 424 cs4281chan_trigger(kobj_t obj, void *data, int go) 425 { 426 struct sc_chinfo *ch = data; 427 428 switch(go) { 429 case PCMTRIG_START: 430 adcdac_prog(ch); 431 adcdac_go(ch, 1); 432 break; 433 case PCMTRIG_STOP: 434 case PCMTRIG_ABORT: 435 adcdac_go(ch, 0); 436 break; 437 default: 438 break; 439 } 440 441 /* return 0 if ok */ 442 return 0; 443 } 444 445 static struct pcmchan_caps * 446 cs4281chan_getcaps(kobj_t obj, void *data) 447 { 448 return &cs4281_caps; 449 } 450 451 static kobj_method_t cs4281chan_methods[] = { 452 KOBJMETHOD(channel_init, cs4281chan_init), 453 KOBJMETHOD(channel_setformat, cs4281chan_setformat), 454 KOBJMETHOD(channel_setspeed, cs4281chan_setspeed), 455 KOBJMETHOD(channel_setblocksize, cs4281chan_setblocksize), 456 KOBJMETHOD(channel_trigger, cs4281chan_trigger), 457 KOBJMETHOD(channel_getptr, cs4281chan_getptr), 458 KOBJMETHOD(channel_getcaps, cs4281chan_getcaps), 459 KOBJMETHOD_END 460 }; 461 CHANNEL_DECLARE(cs4281chan); 462 463 /* -------------------------------------------------------------------- */ 464 /* ADC/DAC control */ 465 466 /* adcdac_go enables/disable DMA channel, returns non-zero if DMA was 467 * active before call */ 468 469 static u_int32_t 470 adcdac_go(struct sc_chinfo *ch, u_int32_t go) 471 { 472 struct sc_info *sc = ch->parent; 473 u_int32_t going; 474 475 going = !(cs4281_rd(sc, CS4281PCI_DCR(ch->dma_chan)) & CS4281PCI_DCR_MSK); 476 477 if (go) 478 cs4281_clr4(sc, CS4281PCI_DCR(ch->dma_chan), CS4281PCI_DCR_MSK); 479 else 480 cs4281_set4(sc, CS4281PCI_DCR(ch->dma_chan), CS4281PCI_DCR_MSK); 481 482 cs4281_wr(sc, CS4281PCI_HICR, CS4281PCI_HICR_EOI); 483 484 return going; 485 } 486 487 static void 488 adcdac_prog(struct sc_chinfo *ch) 489 { 490 struct sc_info *sc = ch->parent; 491 u_int32_t go; 492 493 if (!ch->dma_setup) { 494 go = adcdac_go(ch, 0); 495 cs4281_wr(sc, CS4281PCI_DBA(ch->dma_chan), 496 sndbuf_getbufaddr(ch->buffer)); 497 cs4281_wr(sc, CS4281PCI_DBC(ch->dma_chan), 498 sndbuf_getsize(ch->buffer) / ch->bps - 1); 499 ch->dma_setup = 1; 500 adcdac_go(ch, go); 501 } 502 } 503 504 /* -------------------------------------------------------------------- */ 505 /* The interrupt handler */ 506 507 static void 508 cs4281_intr(void *p) 509 { 510 struct sc_info *sc = (struct sc_info *)p; 511 u_int32_t hisr; 512 513 hisr = cs4281_rd(sc, CS4281PCI_HISR); 514 515 if (hisr == 0) return; 516 517 if (hisr & CS4281PCI_HISR_DMA(CS4281_DMA_PLAY)) { 518 chn_intr(sc->pch.channel); 519 cs4281_rd(sc, CS4281PCI_HDSR(CS4281_DMA_PLAY)); /* Clear interrupt */ 520 } 521 522 if (hisr & CS4281PCI_HISR_DMA(CS4281_DMA_REC)) { 523 chn_intr(sc->rch.channel); 524 cs4281_rd(sc, CS4281PCI_HDSR(CS4281_DMA_REC)); /* Clear interrupt */ 525 } 526 527 /* Signal End-of-Interrupt */ 528 cs4281_wr(sc, CS4281PCI_HICR, CS4281PCI_HICR_EOI); 529 } 530 531 /* -------------------------------------------------------------------- */ 532 /* power management related */ 533 534 static int 535 cs4281_power(struct sc_info *sc, int state) 536 { 537 538 switch (state) { 539 case 0: 540 /* Permit r/w access to all BA0 registers */ 541 cs4281_wr(sc, CS4281PCI_CWPR, CS4281PCI_CWPR_MAGIC); 542 /* Power on */ 543 cs4281_clr4(sc, CS4281PCI_EPPMC, CS4281PCI_EPPMC_FPDN); 544 break; 545 case 3: 546 /* Power off card and codec */ 547 cs4281_set4(sc, CS4281PCI_EPPMC, CS4281PCI_EPPMC_FPDN); 548 cs4281_clr4(sc, CS4281PCI_SPMC, CS4281PCI_SPMC_RSTN); 549 break; 550 } 551 552 DEB(printf("cs4281_power %d -> %d\n", sc->power, state)); 553 sc->power = state; 554 555 return 0; 556 } 557 558 static int 559 cs4281_init(struct sc_info *sc) 560 { 561 u_int32_t i, v; 562 563 /* (0) Blast clock register and serial port */ 564 cs4281_wr(sc, CS4281PCI_CLKCR1, 0); 565 cs4281_wr(sc, CS4281PCI_SERMC, 0); 566 567 /* (1) Make ESYN 0 to turn sync pulse on AC97 link */ 568 cs4281_wr(sc, CS4281PCI_ACCTL, 0); 569 DELAY(50); 570 571 /* (2) Effect Reset */ 572 cs4281_wr(sc, CS4281PCI_SPMC, 0); 573 DELAY(100); 574 cs4281_wr(sc, CS4281PCI_SPMC, CS4281PCI_SPMC_RSTN); 575 /* Wait 50ms for ABITCLK to become stable */ 576 DELAY(50000); 577 578 /* (3) Enable Sound System Clocks */ 579 cs4281_wr(sc, CS4281PCI_CLKCR1, CS4281PCI_CLKCR1_DLLP); 580 DELAY(50000); /* Wait for PLL to stabilize */ 581 cs4281_wr(sc, CS4281PCI_CLKCR1, 582 CS4281PCI_CLKCR1_DLLP | CS4281PCI_CLKCR1_SWCE); 583 584 /* (4) Power Up - this combination is essential. */ 585 cs4281_set4(sc, CS4281PCI_SSPM, 586 CS4281PCI_SSPM_ACLEN | CS4281PCI_SSPM_PSRCEN | 587 CS4281PCI_SSPM_CSRCEN | CS4281PCI_SSPM_MIXEN); 588 589 /* (5) Wait for clock stabilization */ 590 if (cs4281_waitset(sc, 591 CS4281PCI_CLKCR1, 592 CS4281PCI_CLKCR1_DLLRDY, 593 250) == 0) { 594 device_printf(sc->dev, "Clock stabilization failed\n"); 595 return -1; 596 } 597 598 /* (6) Enable ASYNC generation. */ 599 cs4281_wr(sc, CS4281PCI_ACCTL,CS4281PCI_ACCTL_ESYN); 600 601 /* Wait to allow AC97 to start generating clock bit */ 602 DELAY(50000); 603 604 /* Set AC97 timing */ 605 cs4281_wr(sc, CS4281PCI_SERMC, CS4281PCI_SERMC_PTC_AC97); 606 607 /* (7) Wait for AC97 ready signal */ 608 if (cs4281_waitset(sc, CS4281PCI_ACSTS, CS4281PCI_ACSTS_CRDY, 250) == 0) { 609 device_printf(sc->dev, "codec did not avail\n"); 610 return -1; 611 } 612 613 /* (8) Assert valid frame signal to begin sending commands to 614 * AC97 codec */ 615 cs4281_wr(sc, 616 CS4281PCI_ACCTL, 617 CS4281PCI_ACCTL_VFRM | CS4281PCI_ACCTL_ESYN); 618 619 /* (9) Wait for codec calibration */ 620 for(i = 0 ; i < 1000; i++) { 621 DELAY(10000); 622 v = cs4281_rdcd(0, sc, AC97_REG_POWER); 623 if ((v & 0x0f) == 0x0f) { 624 break; 625 } 626 } 627 if (i == 1000) { 628 device_printf(sc->dev, "codec failed to calibrate\n"); 629 return -1; 630 } 631 632 /* (10) Set AC97 timing */ 633 cs4281_wr(sc, CS4281PCI_SERMC, CS4281PCI_SERMC_PTC_AC97); 634 635 /* (11) Wait for valid data to arrive */ 636 if (cs4281_waitset(sc, 637 CS4281PCI_ACISV, 638 CS4281PCI_ACISV_ISV(3) | CS4281PCI_ACISV_ISV(4), 639 10000) == 0) { 640 device_printf(sc->dev, "cs4281 never got valid data\n"); 641 return -1; 642 } 643 644 /* (12) Start digital data transfer of audio data to codec */ 645 cs4281_wr(sc, 646 CS4281PCI_ACOSV, 647 CS4281PCI_ACOSV_SLV(3) | CS4281PCI_ACOSV_SLV(4)); 648 649 /* Set Master and headphone to max */ 650 cs4281_wrcd(0, sc, AC97_MIX_AUXOUT, 0); 651 cs4281_wrcd(0, sc, AC97_MIX_MASTER, 0); 652 653 /* Power on the DAC */ 654 v = cs4281_rdcd(0, sc, AC97_REG_POWER) & 0xfdff; 655 cs4281_wrcd(0, sc, AC97_REG_POWER, v); 656 657 /* Wait until DAC state ready */ 658 for(i = 0; i < 320; i++) { 659 DELAY(100); 660 v = cs4281_rdcd(0, sc, AC97_REG_POWER); 661 if (v & 0x02) break; 662 } 663 664 /* Power on the ADC */ 665 v = cs4281_rdcd(0, sc, AC97_REG_POWER) & 0xfeff; 666 cs4281_wrcd(0, sc, AC97_REG_POWER, v); 667 668 /* Wait until ADC state ready */ 669 for(i = 0; i < 320; i++) { 670 DELAY(100); 671 v = cs4281_rdcd(0, sc, AC97_REG_POWER); 672 if (v & 0x01) break; 673 } 674 675 /* FIFO configuration (driver is DMA orientated, implicit FIFO) */ 676 /* Play FIFO */ 677 678 v = CS4281PCI_FCR_RS(CS4281PCI_RPCM_PLAY_SLOT) | 679 CS4281PCI_FCR_LS(CS4281PCI_LPCM_PLAY_SLOT) | 680 CS4281PCI_FCR_SZ(CS4281_FIFO_SIZE)| 681 CS4281PCI_FCR_OF(0); 682 cs4281_wr(sc, CS4281PCI_FCR(CS4281_DMA_PLAY), v); 683 684 cs4281_wr(sc, CS4281PCI_FCR(CS4281_DMA_PLAY), v | CS4281PCI_FCR_FEN); 685 686 /* Record FIFO */ 687 v = CS4281PCI_FCR_RS(CS4281PCI_RPCM_REC_SLOT) | 688 CS4281PCI_FCR_LS(CS4281PCI_LPCM_REC_SLOT) | 689 CS4281PCI_FCR_SZ(CS4281_FIFO_SIZE)| 690 CS4281PCI_FCR_OF(CS4281_FIFO_SIZE + 1); 691 cs4281_wr(sc, CS4281PCI_FCR(CS4281_DMA_REC), v | CS4281PCI_FCR_PSH); 692 cs4281_wr(sc, CS4281PCI_FCR(CS4281_DMA_REC), v | CS4281PCI_FCR_FEN); 693 694 /* Match AC97 slots to FIFOs */ 695 v = CS4281PCI_SRCSA_PLSS(CS4281PCI_LPCM_PLAY_SLOT) | 696 CS4281PCI_SRCSA_PRSS(CS4281PCI_RPCM_PLAY_SLOT) | 697 CS4281PCI_SRCSA_CLSS(CS4281PCI_LPCM_REC_SLOT) | 698 CS4281PCI_SRCSA_CRSS(CS4281PCI_RPCM_REC_SLOT); 699 cs4281_wr(sc, CS4281PCI_SRCSA, v); 700 701 /* Set Auto-Initialize and set directions */ 702 cs4281_wr(sc, 703 CS4281PCI_DMR(CS4281_DMA_PLAY), 704 CS4281PCI_DMR_DMA | 705 CS4281PCI_DMR_AUTO | 706 CS4281PCI_DMR_TR_PLAY); 707 cs4281_wr(sc, 708 CS4281PCI_DMR(CS4281_DMA_REC), 709 CS4281PCI_DMR_DMA | 710 CS4281PCI_DMR_AUTO | 711 CS4281PCI_DMR_TR_REC); 712 713 /* Enable half and empty buffer interrupts keeping DMA paused */ 714 cs4281_wr(sc, 715 CS4281PCI_DCR(CS4281_DMA_PLAY), 716 CS4281PCI_DCR_TCIE | CS4281PCI_DCR_HTCIE | CS4281PCI_DCR_MSK); 717 cs4281_wr(sc, 718 CS4281PCI_DCR(CS4281_DMA_REC), 719 CS4281PCI_DCR_TCIE | CS4281PCI_DCR_HTCIE | CS4281PCI_DCR_MSK); 720 721 /* Enable Interrupts */ 722 cs4281_clr4(sc, 723 CS4281PCI_HIMR, 724 CS4281PCI_HIMR_DMAI | 725 CS4281PCI_HIMR_DMA(CS4281_DMA_PLAY) | 726 CS4281PCI_HIMR_DMA(CS4281_DMA_REC)); 727 728 /* Set playback volume */ 729 cs4281_wr(sc, CS4281PCI_PPLVC, 7); 730 cs4281_wr(sc, CS4281PCI_PPRVC, 7); 731 732 return 0; 733 } 734 735 /* -------------------------------------------------------------------- */ 736 /* Probe and attach the card */ 737 738 static int 739 cs4281_pci_probe(device_t dev) 740 { 741 char *s = NULL; 742 743 switch (pci_get_devid(dev)) { 744 case CS4281_PCI_ID: 745 s = "Crystal Semiconductor CS4281"; 746 break; 747 } 748 749 if (s) 750 device_set_desc(dev, s); 751 return s ? BUS_PROBE_DEFAULT : ENXIO; 752 } 753 754 static int 755 cs4281_pci_attach(device_t dev) 756 { 757 struct sc_info *sc; 758 struct ac97_info *codec = NULL; 759 char status[SND_STATUSLEN]; 760 761 sc = malloc(sizeof(*sc), M_DEVBUF, M_WAITOK | M_ZERO); 762 sc->dev = dev; 763 sc->type = pci_get_devid(dev); 764 765 pci_enable_busmaster(dev); 766 767 if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) { 768 /* Reset the power state. */ 769 device_printf(dev, "chip is in D%d power mode " 770 "-- setting to D0\n", pci_get_powerstate(dev)); 771 772 pci_set_powerstate(dev, PCI_POWERSTATE_D0); 773 } 774 775 sc->regid = PCIR_BAR(0); 776 sc->regtype = SYS_RES_MEMORY; 777 sc->reg = bus_alloc_resource_any(dev, sc->regtype, &sc->regid, RF_ACTIVE); 778 if (!sc->reg) { 779 sc->regtype = SYS_RES_IOPORT; 780 sc->reg = bus_alloc_resource_any(dev, sc->regtype, &sc->regid, 781 RF_ACTIVE); 782 if (!sc->reg) { 783 device_printf(dev, "unable to allocate register space\n"); 784 goto bad; 785 } 786 } 787 sc->st = rman_get_bustag(sc->reg); 788 sc->sh = rman_get_bushandle(sc->reg); 789 790 sc->memid = PCIR_BAR(1); 791 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->memid, 792 RF_ACTIVE); 793 if (sc->mem == NULL) { 794 device_printf(dev, "unable to allocate fifo space\n"); 795 goto bad; 796 } 797 798 sc->irqid = 0; 799 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irqid, 800 RF_ACTIVE | RF_SHAREABLE); 801 if (!sc->irq) { 802 device_printf(dev, "unable to allocate interrupt\n"); 803 goto bad; 804 } 805 806 if (snd_setup_intr(dev, sc->irq, 0, cs4281_intr, sc, &sc->ih)) { 807 device_printf(dev, "unable to setup interrupt\n"); 808 goto bad; 809 } 810 811 sc->bufsz = pcm_getbuffersize(dev, 4096, CS4281_DEFAULT_BUFSZ, 65536); 812 813 if (bus_dma_tag_create(/*parent*/bus_get_dma_tag(dev), /*alignment*/2, 814 /*boundary*/0, 815 /*lowaddr*/BUS_SPACE_MAXADDR_32BIT, 816 /*highaddr*/BUS_SPACE_MAXADDR, 817 /*filter*/NULL, /*filterarg*/NULL, 818 /*maxsize*/sc->bufsz, /*nsegments*/1, 819 /*maxsegz*/0x3ffff, 820 /*flags*/0, /*lockfunc*/NULL, /*lockarg*/NULL, 821 &sc->parent_dmat) != 0) { 822 device_printf(dev, "unable to create dma tag\n"); 823 goto bad; 824 } 825 826 /* power up */ 827 cs4281_power(sc, 0); 828 829 /* init chip */ 830 if (cs4281_init(sc) == -1) { 831 device_printf(dev, "unable to initialize the card\n"); 832 goto bad; 833 } 834 835 /* create/init mixer */ 836 codec = AC97_CREATE(dev, sc, cs4281_ac97); 837 if (codec == NULL) 838 goto bad; 839 840 mixer_init(dev, ac97_getmixerclass(), codec); 841 842 if (pcm_register(dev, sc, 1, 1)) 843 goto bad; 844 845 pcm_addchan(dev, PCMDIR_PLAY, &cs4281chan_class, sc); 846 pcm_addchan(dev, PCMDIR_REC, &cs4281chan_class, sc); 847 848 snprintf(status, SND_STATUSLEN, "%s 0x%jx irq %jd on %s", 849 (sc->regtype == SYS_RES_IOPORT)? "port" : "mem", 850 rman_get_start(sc->reg), rman_get_start(sc->irq), 851 device_get_nameunit(device_get_parent(dev))); 852 pcm_setstatus(dev, status); 853 854 return 0; 855 856 bad: 857 if (codec) 858 ac97_destroy(codec); 859 if (sc->reg) 860 bus_release_resource(dev, sc->regtype, sc->regid, sc->reg); 861 if (sc->mem) 862 bus_release_resource(dev, SYS_RES_MEMORY, sc->memid, sc->mem); 863 if (sc->ih) 864 bus_teardown_intr(dev, sc->irq, sc->ih); 865 if (sc->irq) 866 bus_release_resource(dev, SYS_RES_IRQ, sc->irqid, sc->irq); 867 if (sc->parent_dmat) 868 bus_dma_tag_destroy(sc->parent_dmat); 869 free(sc, M_DEVBUF); 870 871 return ENXIO; 872 } 873 874 static int 875 cs4281_pci_detach(device_t dev) 876 { 877 int r; 878 struct sc_info *sc; 879 880 r = pcm_unregister(dev); 881 if (r) 882 return r; 883 884 sc = pcm_getdevinfo(dev); 885 886 /* power off */ 887 cs4281_power(sc, 3); 888 889 bus_release_resource(dev, sc->regtype, sc->regid, sc->reg); 890 bus_release_resource(dev, SYS_RES_MEMORY, sc->memid, sc->mem); 891 bus_teardown_intr(dev, sc->irq, sc->ih); 892 bus_release_resource(dev, SYS_RES_IRQ, sc->irqid, sc->irq); 893 bus_dma_tag_destroy(sc->parent_dmat); 894 free(sc, M_DEVBUF); 895 896 return 0; 897 } 898 899 static int 900 cs4281_pci_suspend(device_t dev) 901 { 902 struct sc_info *sc; 903 904 sc = pcm_getdevinfo(dev); 905 906 sc->rch.dma_active = adcdac_go(&sc->rch, 0); 907 sc->pch.dma_active = adcdac_go(&sc->pch, 0); 908 909 cs4281_power(sc, 3); 910 911 return 0; 912 } 913 914 static int 915 cs4281_pci_resume(device_t dev) 916 { 917 struct sc_info *sc; 918 919 sc = pcm_getdevinfo(dev); 920 921 /* power up */ 922 cs4281_power(sc, 0); 923 924 /* initialize chip */ 925 if (cs4281_init(sc) == -1) { 926 device_printf(dev, "unable to reinitialize the card\n"); 927 return ENXIO; 928 } 929 930 /* restore mixer state */ 931 if (mixer_reinit(dev) == -1) { 932 device_printf(dev, "unable to reinitialize the mixer\n"); 933 return ENXIO; 934 } 935 936 /* restore chip state */ 937 cs4281chan_setspeed(NULL, &sc->rch, sc->rch.spd); 938 cs4281chan_setblocksize(NULL, &sc->rch, sc->rch.blksz); 939 cs4281chan_setformat(NULL, &sc->rch, sc->rch.fmt); 940 adcdac_go(&sc->rch, sc->rch.dma_active); 941 942 cs4281chan_setspeed(NULL, &sc->pch, sc->pch.spd); 943 cs4281chan_setblocksize(NULL, &sc->pch, sc->pch.blksz); 944 cs4281chan_setformat(NULL, &sc->pch, sc->pch.fmt); 945 adcdac_go(&sc->pch, sc->pch.dma_active); 946 947 return 0; 948 } 949 950 static device_method_t cs4281_methods[] = { 951 /* Device interface */ 952 DEVMETHOD(device_probe, cs4281_pci_probe), 953 DEVMETHOD(device_attach, cs4281_pci_attach), 954 DEVMETHOD(device_detach, cs4281_pci_detach), 955 DEVMETHOD(device_suspend, cs4281_pci_suspend), 956 DEVMETHOD(device_resume, cs4281_pci_resume), 957 { 0, 0 } 958 }; 959 960 static driver_t cs4281_driver = { 961 "pcm", 962 cs4281_methods, 963 PCM_SOFTC_SIZE, 964 }; 965 966 DRIVER_MODULE(snd_cs4281, pci, cs4281_driver, 0, 0); 967 MODULE_DEPEND(snd_cs4281, sound, SOUND_MINVER, SOUND_PREFVER, SOUND_MAXVER); 968 MODULE_VERSION(snd_cs4281, 1); 969