sys/dev/sound/isa/ess.c

   1 /*-
   2  * Copyright (c) 1999 Cameron Grant <cg@freebsd.org>
   3  * Copyright (c) 1997,1998 Luigi Rizzo
   4  *
   5  * Derived from files in the Voxware 3.5 distribution,
   6  * Copyright by Hannu Savolainen 1994, under the same copyright
   7  * conditions.
   8  * All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #include <dev/sound/pcm/sound.h>
  33
  34 #include  <dev/sound/isa/sb.h>
  35 #include  <dev/sound/chip.h>
  36
  37 #include <isa/isavar.h>
  38
  39 #include "mixer_if.h"
  40
  41 SND_DECLARE_FILE("$FreeBSD$");
  42
  43 #define ESS_BUFFSIZE (4096)
  44 #define ABS(x) (((x) < 0)? -(x) : (x))
  45
  46 /* audio2 never generates irqs and sounds very noisy */
  47 #undef ESS18XX_DUPLEX
  48
  49 /* more accurate clocks and split audio1/audio2 rates */
  50 #define ESS18XX_NEWSPEED
  51
  52 static u_int32_t ess_pfmt[] = {
  53         AFMT_U8,
  54         AFMT_STEREO | AFMT_U8,
  55         AFMT_S8,
  56         AFMT_STEREO | AFMT_S8,
  57         AFMT_S16_LE,
  58         AFMT_STEREO | AFMT_S16_LE,
  59         AFMT_U16_LE,
  60         AFMT_STEREO | AFMT_U16_LE,
  61         0
  62 };
  63
  64 static struct pcmchan_caps ess_playcaps = {6000, 48000, ess_pfmt, 0};
  65
  66 static u_int32_t ess_rfmt[] = {
  67         AFMT_U8,
  68         AFMT_STEREO | AFMT_U8,
  69         AFMT_S8,
  70         AFMT_STEREO | AFMT_S8,
  71         AFMT_S16_LE,
  72         AFMT_STEREO | AFMT_S16_LE,
  73         AFMT_U16_LE,
  74         AFMT_STEREO | AFMT_U16_LE,
  75         0
  76 };
  77
  78 static struct pcmchan_caps ess_reccaps = {6000, 48000, ess_rfmt, 0};
  79
  80 struct ess_info;
  81
  82 struct ess_chinfo {
  83         struct ess_info *parent;
  84         struct pcm_channel *channel;
  85         struct snd_dbuf *buffer;
  86         int dir, hwch, stopping, run;
  87         u_int32_t fmt, spd, blksz;
  88 };
  89
  90 struct ess_info {
  91         device_t parent_dev;
  92         struct resource *io_base;       /* I/O address for the board */
  93         struct resource *irq;
  94         struct resource *drq1;
  95         struct resource *drq2;
  96         void *ih;
  97         bus_dma_tag_t parent_dmat;
  98
  99         unsigned int bufsize;
 100         int type, duplex:1, newspeed:1;
 101         u_long bd_flags;       /* board-specific flags */
 102         struct ess_chinfo pch, rch;
 103 };
 104
 105 #if 0
 106 static int ess_rd(struct ess_info *sc, int reg);
 107 static void ess_wr(struct ess_info *sc, int reg, u_int8_t val);
 108 static int ess_dspready(struct ess_info *sc);
 109 static int ess_cmd(struct ess_info *sc, u_char val);
 110 static int ess_cmd1(struct ess_info *sc, u_char cmd, int val);
 111 static int ess_get_byte(struct ess_info *sc);
 112 static void ess_setmixer(struct ess_info *sc, u_int port, u_int value);
 113 static int ess_getmixer(struct ess_info *sc, u_int port);
 114 static int ess_reset_dsp(struct ess_info *sc);
 115
 116 static int ess_write(struct ess_info *sc, u_char reg, int val);
 117 static int ess_read(struct ess_info *sc, u_char reg);
 118
 119 static void ess_intr(void *arg);
 120 static int ess_setupch(struct ess_info *sc, int ch, int dir, int spd, u_int32_t fmt, int len);
 121 static int ess_start(struct ess_chinfo *ch);
 122 static int ess_stop(struct ess_chinfo *ch);
 123 #endif
 124
 125 /*
 126  * Common code for the midi and pcm functions
 127  *
 128  * ess_cmd write a single byte to the CMD port.
 129  * ess_cmd1 write a CMD + 1 byte arg
 130  * ess_cmd2 write a CMD + 2 byte arg
 131  * ess_get_byte returns a single byte from the DSP data port
 132  *
 133  * ess_write is actually ess_cmd1
 134  * ess_read access ext. regs via ess_cmd(0xc0, reg) followed by ess_get_byte
 135  */
 136
 137 static void
 138 ess_lock(struct ess_info *sc) {
 139
 140         sbc_lock(device_get_softc(sc->parent_dev));
 141 }
 142
 143 static void
 144 ess_unlock(struct ess_info *sc) {
 145
 146         sbc_unlock(device_get_softc(sc->parent_dev));
 147 }
 148
 149 static int
 150 port_rd(struct resource *port, int off)
 151 {
 152         return bus_space_read_1(rman_get_bustag(port),
 153                                 rman_get_bushandle(port),
 154                                 off);
 155 }
 156
 157 static void
 158 port_wr(struct resource *port, int off, u_int8_t data)
 159 {
 160         bus_space_write_1(rman_get_bustag(port),
 161                           rman_get_bushandle(port),
 162                           off, data);
 163 }
 164
 165 static int
 166 ess_rd(struct ess_info *sc, int reg)
 167 {
 168         return port_rd(sc->io_base, reg);
 169 }
 170
 171 static void
 172 ess_wr(struct ess_info *sc, int reg, u_int8_t val)
 173 {
 174         port_wr(sc->io_base, reg, val);
 175 }
 176
 177 static int
 178 ess_dspready(struct ess_info *sc)
 179 {
 180         return ((ess_rd(sc, SBDSP_STATUS) & 0x80) == 0);
 181 }
 182
 183 static int
 184 ess_dspwr(struct ess_info *sc, u_char val)
 185 {
 186         int  i;
 187
 188         for (i = 0; i < 1000; i++) {
 189                 if (ess_dspready(sc)) {
 190                         ess_wr(sc, SBDSP_CMD, val);
 191                         return 1;
 192                 }
 193                 if (i > 10) DELAY((i > 100)? 1000 : 10);
 194         }
 195         printf("ess_dspwr(0x%02x) timed out.\n", val);
 196         return 0;
 197 }
 198
 199 static int
 200 ess_cmd(struct ess_info *sc, u_char val)
 201 {
 202 #if 0
 203         printf("ess_cmd: %x\n", val);
 204 #endif
 205         return ess_dspwr(sc, val);
 206 }
 207
 208 static int
 209 ess_cmd1(struct ess_info *sc, u_char cmd, int val)
 210 {
 211 #if 0
 212         printf("ess_cmd1: %x, %x\n", cmd, val);
 213 #endif
 214         if (ess_dspwr(sc, cmd)) {
 215                 return ess_dspwr(sc, val & 0xff);
 216         } else return 0;
 217 }
 218
 219 static void
 220 ess_setmixer(struct ess_info *sc, u_int port, u_int value)
 221 {
 222         DEB(printf("ess_setmixer: reg=%x, val=%x\n", port, value);)
 223         ess_wr(sc, SB_MIX_ADDR, (u_char) (port & 0xff)); /* Select register */
 224         DELAY(10);
 225         ess_wr(sc, SB_MIX_DATA, (u_char) (value & 0xff));
 226         DELAY(10);
 227 }
 228
 229 static int
 230 ess_getmixer(struct ess_info *sc, u_int port)
 231 {
 232         int val;
 233         ess_wr(sc, SB_MIX_ADDR, (u_char) (port & 0xff)); /* Select register */
 234         DELAY(10);
 235         val = ess_rd(sc, SB_MIX_DATA);
 236         DELAY(10);
 237
 238         return val;
 239 }
 240
 241 static int
 242 ess_get_byte(struct ess_info *sc)
 243 {
 244         int i;
 245
 246         for (i = 1000; i > 0; i--) {
 247                 if (ess_rd(sc, DSP_DATA_AVAIL) & 0x80)
 248                         return ess_rd(sc, DSP_READ);
 249                 else
 250                         DELAY(20);
 251         }
 252         return -1;
 253 }
 254
 255 static int
 256 ess_write(struct ess_info *sc, u_char reg, int val)
 257 {
 258         return ess_cmd1(sc, reg, val);
 259 }
 260
 261 static int
 262 ess_read(struct ess_info *sc, u_char reg)
 263 {
 264         return (ess_cmd(sc, 0xc0) && ess_cmd(sc, reg))? ess_get_byte(sc) : -1;
 265 }
 266
 267 static int
 268 ess_reset_dsp(struct ess_info *sc)
 269 {
 270         ess_wr(sc, SBDSP_RST, 3);
 271         DELAY(100);
 272         ess_wr(sc, SBDSP_RST, 0);
 273         if (ess_get_byte(sc) != 0xAA) {
 274                 DEB(printf("ess_reset_dsp 0x%lx failed\n",
 275                            rman_get_start(sc->io_base)));
 276                 return ENXIO;   /* Sorry */
 277         }
 278         ess_cmd(sc, 0xc6);
 279         return 0;
 280 }
 281
 282 static void
 283 ess_release_resources(struct ess_info *sc, device_t dev)
 284 {
 285         if (sc->irq) {
 286                 if (sc->ih)
 287                         bus_teardown_intr(dev, sc->irq, sc->ih);
 288                 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq);
 289                 sc->irq = 0;
 290         }
 291         if (sc->drq1) {
 292                 isa_dma_release(rman_get_start(sc->drq1));
 293                 bus_release_resource(dev, SYS_RES_DRQ, 0, sc->drq1);
 294                 sc->drq1 = 0;
 295         }
 296         if (sc->drq2) {
 297                 isa_dma_release(rman_get_start(sc->drq2));
 298                 bus_release_resource(dev, SYS_RES_DRQ, 1, sc->drq2);
 299                 sc->drq2 = 0;
 300         }
 301         if (sc->io_base) {
 302                 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->io_base);
 303                 sc->io_base = 0;
 304         }
 305         if (sc->parent_dmat) {
 306                 bus_dma_tag_destroy(sc->parent_dmat);
 307                 sc->parent_dmat = 0;
 308         }
 309         free(sc, M_DEVBUF);
 310 }
 311
 312 static int
 313 ess_alloc_resources(struct ess_info *sc, device_t dev)
 314 {
 315         int rid;
 316
 317         rid = 0;
 318         if (!sc->io_base)
 319                 sc->io_base = bus_alloc_resource_any(dev, SYS_RES_IOPORT,
 320                                                      &rid, RF_ACTIVE);
 321         rid = 0;
 322         if (!sc->irq)
 323                 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ,
 324                                                  &rid, RF_ACTIVE);
 325         rid = 0;
 326         if (!sc->drq1)
 327                 sc->drq1 = bus_alloc_resource_any(dev, SYS_RES_DRQ,
 328                                                   &rid, RF_ACTIVE);
 329         rid = 1;
 330         if (!sc->drq2)
 331                 sc->drq2 = bus_alloc_resource_any(dev, SYS_RES_DRQ,
 332                                                   &rid, RF_ACTIVE);
 333
 334         if (sc->io_base && sc->drq1 && sc->irq) {
 335                 isa_dma_acquire(rman_get_start(sc->drq1));
 336                 isa_dmainit(rman_get_start(sc->drq1), sc->bufsize);
 337
 338                 if (sc->drq2) {
 339                         isa_dma_acquire(rman_get_start(sc->drq2));
 340                         isa_dmainit(rman_get_start(sc->drq2), sc->bufsize);
 341                 }
 342
 343                 return 0;
 344         } else return ENXIO;
 345 }
 346
 347 static void
 348 ess_intr(void *arg)
 349 {
 350         struct ess_info *sc = (struct ess_info *)arg;
 351         int src, pirq, rirq;
 352
 353         ess_lock(sc);
 354         src = 0;
 355         if (ess_getmixer(sc, 0x7a) & 0x80)
 356                 src |= 2;
 357         if (ess_rd(sc, 0x0c) & 0x01)
 358                 src |= 1;
 359
 360         pirq = (src & sc->pch.hwch)? 1 : 0;
 361         rirq = (src & sc->rch.hwch)? 1 : 0;
 362
 363         if (pirq) {
 364                 if (sc->pch.run) {
 365                         ess_unlock(sc);
 366                         chn_intr(sc->pch.channel);
 367                         ess_lock(sc);
 368                 }
 369                 if (sc->pch.stopping) {
 370                         sc->pch.run = 0;
 371                         sndbuf_dma(sc->pch.buffer, PCMTRIG_STOP);
 372                         sc->pch.stopping = 0;
 373                         if (sc->pch.hwch == 1)
 374                                 ess_write(sc, 0xb8, ess_read(sc, 0xb8) & ~0x01);
 375                         else
 376                                 ess_setmixer(sc, 0x78, ess_getmixer(sc, 0x78) & ~0x03);
 377                 }
 378         }
 379
 380         if (rirq) {
 381                 if (sc->rch.run) {
 382                         ess_unlock(sc);
 383                         chn_intr(sc->rch.channel);
 384                         ess_lock(sc);
 385                 }
 386                 if (sc->rch.stopping) {
 387                         sc->rch.run = 0;
 388                         sndbuf_dma(sc->rch.buffer, PCMTRIG_STOP);
 389                         sc->rch.stopping = 0;
 390                         /* XXX: will this stop audio2? */
 391                         ess_write(sc, 0xb8, ess_read(sc, 0xb8) & ~0x01);
 392                 }
 393         }
 394
 395         if (src & 2)
 396                 ess_setmixer(sc, 0x7a, ess_getmixer(sc, 0x7a) & ~0x80);
 397         if (src & 1)
 398                 ess_rd(sc, DSP_DATA_AVAIL);
 399         ess_unlock(sc);
 400 }
 401
 402 /* utility functions for ESS */
 403 static u_int8_t
 404 ess_calcspeed8(int *spd)
 405 {
 406         int speed = *spd;
 407         u_int32_t t;
 408
 409         if (speed > 22000) {
 410                 t = (795500 + speed / 2) / speed;
 411                 speed = (795500 + t / 2) / t;
 412                 t = (256 - t) | 0x80;
 413         } else {
 414                 t = (397700 + speed / 2) / speed;
 415                 speed = (397700 + t / 2) / t;
 416                 t = 128 - t;
 417         }
 418         *spd = speed;
 419         return t & 0x000000ff;
 420 }
 421
 422 static u_int8_t
 423 ess_calcspeed9(int *spd)
 424 {
 425         int speed, s0, s1, use0;
 426         u_int8_t t0, t1;
 427
 428         /* rate = source / (256 - divisor) */
 429         /* divisor = 256 - (source / rate) */
 430         speed = *spd;
 431         t0 = 128 - (793800 / speed);
 432         s0 = 793800 / (128 - t0);
 433
 434         t1 = 128 - (768000 / speed);
 435         s1 = 768000 / (128 - t1);
 436         t1 |= 0x80;
 437
 438         use0 = (ABS(speed - s0) < ABS(speed - s1))? 1 : 0;
 439
 440         *spd = use0? s0 : s1;
 441         return use0? t0 : t1;
 442 }
 443
 444 static u_int8_t
 445 ess_calcfilter(int spd)
 446 {
 447         int cutoff;
 448
 449         /* cutoff = 7160000 / (256 - divisor) */
 450         /* divisor = 256 - (7160000 / cutoff) */
 451         cutoff = (spd * 9 * 82) / 20;
 452         return (256 - (7160000 / cutoff));
 453 }
 454
 455 static int
 456 ess_setupch(struct ess_info *sc, int ch, int dir, int spd, u_int32_t fmt, int len)
 457 {
 458         int play = (dir == PCMDIR_PLAY)? 1 : 0;
 459         int b16 = (fmt & AFMT_16BIT)? 1 : 0;
 460         int stereo = (fmt & AFMT_STEREO)? 1 : 0;
 461         int unsign = (fmt == AFMT_U8 || fmt == AFMT_U16_LE)? 1 : 0;
 462         u_int8_t spdval, fmtval;
 463
 464
 465         spdval = (sc->newspeed)? ess_calcspeed9(&spd) : ess_calcspeed8(&spd);
 466         len = -len;
 467
 468         if (ch == 1) {
 469                 KASSERT((dir == PCMDIR_PLAY) || (dir == PCMDIR_REC), ("ess_setupch: dir1 bad"));
 470                 /* transfer length low */
 471                 ess_write(sc, 0xa4, len & 0x00ff);
 472                 /* transfer length high */
 473                 ess_write(sc, 0xa5, (len & 0xff00) >> 8);
 474                 /* autoinit, dma dir */
 475                 ess_write(sc, 0xb8, 0x04 | (play? 0x00 : 0x0a));
 476                 /* mono/stereo */
 477                 ess_write(sc, 0xa8, (ess_read(sc, 0xa8) & ~0x03) | (stereo? 0x01 : 0x02));
 478                 /* demand mode, 4 bytes/xfer */
 479                 ess_write(sc, 0xb9, 0x02);
 480                 /* sample rate */
 481                 ess_write(sc, 0xa1, spdval);
 482                 /* filter cutoff */
 483                 ess_write(sc, 0xa2, ess_calcfilter(spd));
 484                 /* setup dac/adc */
 485                 if (play)
 486                         ess_write(sc, 0xb6, unsign? 0x80 : 0x00);
 487                 /* mono, b16: signed, load signal */
 488                 ess_write(sc, 0xb7, 0x51 | (unsign? 0x00 : 0x20));
 489                 /* setup fifo */
 490                 ess_write(sc, 0xb7, 0x90 | (unsign? 0x00 : 0x20) |
 491                                            (b16? 0x04 : 0x00) |
 492                                            (stereo? 0x08 : 0x40));
 493                 /* irq control */
 494                 ess_write(sc, 0xb1, (ess_read(sc, 0xb1) & 0x0f) | 0x50);
 495                 /* drq control */
 496                 ess_write(sc, 0xb2, (ess_read(sc, 0xb2) & 0x0f) | 0x50);
 497         } else if (ch == 2) {
 498                 KASSERT(dir == PCMDIR_PLAY, ("ess_setupch: dir2 bad"));
 499                 /* transfer length low */
 500                 ess_setmixer(sc, 0x74, len & 0x00ff);
 501                 /* transfer length high */
 502                 ess_setmixer(sc, 0x76, (len & 0xff00) >> 8);
 503                 /* autoinit, 4 bytes/req */
 504                 ess_setmixer(sc, 0x78, 0x90);
 505                 fmtval = b16 | (stereo << 1) | (unsign << 2);
 506                 /* enable irq, set format */
 507                 ess_setmixer(sc, 0x7a, 0x40 | fmtval);
 508                 if (sc->newspeed) {
 509                         /* sample rate */
 510                         ess_setmixer(sc, 0x70, spdval);
 511                         /* filter cutoff */
 512                         ess_setmixer(sc, 0x72, ess_calcfilter(spd));
 513                 }
 514         }
 515
 516         return 0;
 517 }
 518 static int
 519 ess_start(struct ess_chinfo *ch)
 520 {
 521         struct ess_info *sc = ch->parent;
 522         int play = (ch->dir == PCMDIR_PLAY)? 1 : 0;
 523
 524         ess_lock(sc);
 525         ess_setupch(sc, ch->hwch, ch->dir, ch->spd, ch->fmt, ch->blksz);
 526         ch->stopping = 0;
 527         if (ch->hwch == 1)
 528                 ess_write(sc, 0xb8, ess_read(sc, 0xb8) | 0x01);
 529         else
 530                 ess_setmixer(sc, 0x78, ess_getmixer(sc, 0x78) | 0x03);
 531         if (play)
 532                 ess_cmd(sc, DSP_CMD_SPKON);
 533         ess_unlock(sc);
 534         return 0;
 535 }
 536
 537 static int
 538 ess_stop(struct ess_chinfo *ch)
 539 {
 540         struct ess_info *sc = ch->parent;
 541         int play = (ch->dir == PCMDIR_PLAY)? 1 : 0;
 542
 543         ess_lock(sc);
 544         ch->stopping = 1;
 545         if (ch->hwch == 1)
 546                 ess_write(sc, 0xb8, ess_read(sc, 0xb8) & ~0x04);
 547         else
 548                 ess_setmixer(sc, 0x78, ess_getmixer(sc, 0x78) & ~0x10);
 549         if (play)
 550                 ess_cmd(sc, DSP_CMD_SPKOFF);
 551         ess_unlock(sc);
 552         return 0;
 553 }
 554
 555 /* -------------------------------------------------------------------- */
 556 /* channel interface for ESS18xx */
 557 static void *
 558 esschan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b, struct pcm_channel *c, int dir)
 559 {
 560         struct ess_info *sc = devinfo;
 561         struct ess_chinfo *ch = (dir == PCMDIR_PLAY)? &sc->pch : &sc->rch;
 562
 563         ch->parent = sc;
 564         ch->channel = c;
 565         ch->buffer = b;
 566         if (sndbuf_alloc(ch->buffer, sc->parent_dmat, sc->bufsize) != 0)
 567                 return NULL;
 568         ch->dir = dir;
 569         ch->hwch = 1;
 570         if ((dir == PCMDIR_PLAY) && (sc->duplex))
 571                 ch->hwch = 2;
 572         sndbuf_dmasetup(ch->buffer, (ch->hwch == 1)? sc->drq1 : sc->drq2);
 573         return ch;
 574 }
 575
 576 static int
 577 esschan_setformat(kobj_t obj, void *data, u_int32_t format)
 578 {
 579         struct ess_chinfo *ch = data;
 580
 581         ch->fmt = format;
 582         return 0;
 583 }
 584
 585 static int
 586 esschan_setspeed(kobj_t obj, void *data, u_int32_t speed)
 587 {
 588         struct ess_chinfo *ch = data;
 589         struct ess_info *sc = ch->parent;
 590
 591         ch->spd = speed;
 592         if (sc->newspeed)
 593                 ess_calcspeed9(&ch->spd);
 594         else
 595                 ess_calcspeed8(&ch->spd);
 596         return ch->spd;
 597 }
 598
 599 static int
 600 esschan_setblocksize(kobj_t obj, void *data, u_int32_t blocksize)
 601 {
 602         struct ess_chinfo *ch = data;
 603
 604         ch->blksz = blocksize;
 605         return ch->blksz;
 606 }
 607
 608 static int
 609 esschan_trigger(kobj_t obj, void *data, int go)
 610 {
 611         struct ess_chinfo *ch = data;
 612
 613         if (go == PCMTRIG_EMLDMAWR || go == PCMTRIG_EMLDMARD)
 614                 return 0;
 615
 616         switch (go) {
 617         case PCMTRIG_START:
 618                 ch->run = 1;
 619                 sndbuf_dma(ch->buffer, go);
 620                 ess_start(ch);
 621                 break;
 622
 623         case PCMTRIG_STOP:
 624         case PCMTRIG_ABORT:
 625         default:
 626                 ess_stop(ch);
 627                 break;
 628         }
 629         return 0;
 630 }
 631
 632 static int
 633 esschan_getptr(kobj_t obj, void *data)
 634 {
 635         struct ess_chinfo *ch = data;
 636
 637         return sndbuf_dmaptr(ch->buffer);
 638 }
 639
 640 static struct pcmchan_caps *
 641 esschan_getcaps(kobj_t obj, void *data)
 642 {
 643         struct ess_chinfo *ch = data;
 644
 645         return (ch->dir == PCMDIR_PLAY)? &ess_playcaps : &ess_reccaps;
 646 }
 647
 648 static kobj_method_t esschan_methods[] = {
 649         KOBJMETHOD(channel_init,                esschan_init),
 650         KOBJMETHOD(channel_setformat,           esschan_setformat),
 651         KOBJMETHOD(channel_setspeed,            esschan_setspeed),
 652         KOBJMETHOD(channel_setblocksize,        esschan_setblocksize),
 653         KOBJMETHOD(channel_trigger,             esschan_trigger),
 654         KOBJMETHOD(channel_getptr,              esschan_getptr),
 655         KOBJMETHOD(channel_getcaps,             esschan_getcaps),
 656         { 0, 0 }
 657 };
 658 CHANNEL_DECLARE(esschan);
 659
 660 /************************************************************/
 661
 662 static int
 663 essmix_init(struct snd_mixer *m)
 664 {
 665         struct ess_info *sc = mix_getdevinfo(m);
 666
 667         mix_setrecdevs(m, SOUND_MASK_CD | SOUND_MASK_MIC | SOUND_MASK_LINE |
 668                           SOUND_MASK_IMIX);
 669
 670         mix_setdevs(m, SOUND_MASK_SYNTH | SOUND_MASK_PCM | SOUND_MASK_LINE |
 671                        SOUND_MASK_MIC | SOUND_MASK_CD | SOUND_MASK_VOLUME |
 672                        SOUND_MASK_LINE1 | SOUND_MASK_SPEAKER);
 673
 674         ess_setmixer(sc, 0, 0); /* reset */
 675
 676         return 0;
 677 }
 678
 679 static int
 680 essmix_set(struct snd_mixer *m, unsigned dev, unsigned left, unsigned right)
 681 {
 682         struct ess_info *sc = mix_getdevinfo(m);
 683         int preg = 0, rreg = 0, l, r;
 684
 685         l = (left * 15) / 100;
 686         r = (right * 15) / 100;
 687         switch (dev) {
 688         case SOUND_MIXER_SYNTH:
 689                 preg = 0x36;
 690                 rreg = 0x6b;
 691                 break;
 692
 693         case SOUND_MIXER_PCM:
 694                 preg = 0x14;
 695                 rreg = 0x7c;
 696                 break;
 697
 698         case SOUND_MIXER_LINE:
 699                 preg = 0x3e;
 700                 rreg = 0x6e;
 701                 break;
 702
 703         case SOUND_MIXER_MIC:
 704                 preg = 0x1a;
 705                 rreg = 0x68;
 706                 break;
 707
 708         case SOUND_MIXER_LINE1:
 709                 preg = 0x3a;
 710                 rreg = 0x6c;
 711                 break;
 712
 713         case SOUND_MIXER_CD:
 714                 preg = 0x38;
 715                 rreg = 0x6a;
 716                 break;
 717
 718         case SOUND_MIXER_SPEAKER:
 719                 preg = 0x3c;
 720                 break;
 721
 722         case SOUND_MIXER_VOLUME:
 723                 l = left? (left * 63) / 100 : 64;
 724                 r = right? (right * 63) / 100 : 64;
 725                 ess_setmixer(sc, 0x60, l);
 726                 ess_setmixer(sc, 0x62, r);
 727                 left = (l == 64)? 0 : (l * 100) / 63;
 728                 right = (r == 64)? 0 : (r * 100) / 63;
 729                 return left | (right << 8);
 730         }
 731
 732         if (preg)
 733                 ess_setmixer(sc, preg, (l << 4) | r);
 734         if (rreg)
 735                 ess_setmixer(sc, rreg, (l << 4) | r);
 736
 737         left = (l * 100) / 15;
 738         right = (r * 100) / 15;
 739
 740         return left | (right << 8);
 741 }
 742
 743 static int
 744 essmix_setrecsrc(struct snd_mixer *m, u_int32_t src)
 745 {
 746         struct ess_info *sc = mix_getdevinfo(m);
 747         u_char recdev;
 748
 749         switch (src) {
 750         case SOUND_MASK_CD:
 751                 recdev = 0x02;
 752                 break;
 753
 754         case SOUND_MASK_LINE:
 755                 recdev = 0x06;
 756                 break;
 757
 758         case SOUND_MASK_IMIX:
 759                 recdev = 0x05;
 760                 break;
 761
 762         case SOUND_MASK_MIC:
 763         default:
 764                 recdev = 0x00;
 765                 src = SOUND_MASK_MIC;
 766                 break;
 767         }
 768
 769         ess_setmixer(sc, 0x1c, recdev);
 770
 771         return src;
 772 }
 773
 774 static kobj_method_t essmixer_methods[] = {
 775         KOBJMETHOD(mixer_init,          essmix_init),
 776         KOBJMETHOD(mixer_set,           essmix_set),
 777         KOBJMETHOD(mixer_setrecsrc,     essmix_setrecsrc),
 778         { 0, 0 }
 779 };
 780 MIXER_DECLARE(essmixer);
 781
 782 /************************************************************/
 783
 784 static int
 785 ess_probe(device_t dev)
 786 {
 787         uintptr_t func, ver, r, f;
 788
 789         /* The parent device has already been probed. */
 790         r = BUS_READ_IVAR(device_get_parent(dev), dev, 0, &func);
 791         if (func != SCF_PCM)
 792                 return (ENXIO);
 793
 794         r = BUS_READ_IVAR(device_get_parent(dev), dev, 1, &ver);
 795         f = (ver & 0xffff0000) >> 16;
 796         if (!(f & BD_F_ESS))
 797                 return (ENXIO);
 798
 799         device_set_desc(dev, "ESS 18xx DSP");
 800
 801         return 0;
 802 }
 803
 804 static int
 805 ess_attach(device_t dev)
 806 {
 807         struct ess_info *sc;
 808         char status[SND_STATUSLEN], buf[64];
 809         int ver;
 810
 811         sc = (struct ess_info *)malloc(sizeof *sc, M_DEVBUF, M_NOWAIT | M_ZERO);
 812         if (!sc)
 813                 return ENXIO;
 814
 815         sc->parent_dev = device_get_parent(dev);
 816         sc->bufsize = pcm_getbuffersize(dev, 4096, ESS_BUFFSIZE, 65536);
 817         if (ess_alloc_resources(sc, dev))
 818                 goto no;
 819         if (ess_reset_dsp(sc))
 820                 goto no;
 821         if (mixer_init(dev, &essmixer_class, sc))
 822                 goto no;
 823
 824         sc->duplex = 0;
 825         sc->newspeed = 0;
 826         ver = (ess_getmixer(sc, 0x40) << 8) | ess_rd(sc, SB_MIX_DATA);
 827         snprintf(buf, sizeof buf, "ESS %x DSP", ver);
 828         device_set_desc_copy(dev, buf);
 829         if (bootverbose)
 830                 device_printf(dev, "ESS%x detected", ver);
 831
 832         switch (ver) {
 833         case 0x1869:
 834         case 0x1879:
 835 #ifdef ESS18XX_DUPLEX
 836                 sc->duplex = sc->drq2? 1 : 0;
 837 #endif
 838 #ifdef ESS18XX_NEWSPEED
 839                 sc->newspeed = 1;
 840 #endif
 841                 break;
 842         }
 843         if (bootverbose)
 844                 printf("%s%s\n", sc->duplex? ", duplex" : "",
 845                                  sc->newspeed? ", newspeed" : "");
 846
 847         if (sc->newspeed)
 848                 ess_setmixer(sc, 0x71, 0x22);
 849
 850         snd_setup_intr(dev, sc->irq, 0, ess_intr, sc, &sc->ih);
 851         if (!sc->duplex)
 852                 pcm_setflags(dev, pcm_getflags(dev) | SD_F_SIMPLEX);
 853
 854         if (bus_dma_tag_create(/*parent*/bus_get_dma_tag(dev), /*alignment*/2,
 855                         /*boundary*/0,
 856                         /*lowaddr*/BUS_SPACE_MAXADDR_24BIT,
 857                         /*highaddr*/BUS_SPACE_MAXADDR,
 858                         /*filter*/NULL, /*filterarg*/NULL,
 859                         /*maxsize*/sc->bufsize, /*nsegments*/1,
 860                         /*maxsegz*/0x3ffff,
 861                         /*flags*/0, /*lockfunc*/busdma_lock_mutex,
 862                         /*lockarg*/&Giant, &sc->parent_dmat) != 0) {
 863                 device_printf(dev, "unable to create dma tag\n");
 864                 goto no;
 865         }
 866
 867         if (sc->drq2)
 868                 snprintf(buf, SND_STATUSLEN, ":%ld", rman_get_start(sc->drq2));
 869         else
 870                 buf[0] = '\0';
 871
 872         snprintf(status, SND_STATUSLEN, "at io 0x%lx irq %ld drq %ld%s bufsz %u %s",
 873                 rman_get_start(sc->io_base), rman_get_start(sc->irq),
 874                 rman_get_start(sc->drq1), buf, sc->bufsize,
 875                 PCM_KLDSTRING(snd_ess));
 876
 877         if (pcm_register(dev, sc, 1, 1))
 878                 goto no;
 879         pcm_addchan(dev, PCMDIR_REC, &esschan_class, sc);
 880         pcm_addchan(dev, PCMDIR_PLAY, &esschan_class, sc);
 881         pcm_setstatus(dev, status);
 882
 883         return 0;
 884
 885 no:
 886         ess_release_resources(sc, dev);
 887         return ENXIO;
 888 }
 889
 890 static int
 891 ess_detach(device_t dev)
 892 {
 893         int r;
 894         struct ess_info *sc;
 895
 896         r = pcm_unregister(dev);
 897         if (r)
 898                 return r;
 899
 900         sc = pcm_getdevinfo(dev);
 901         ess_release_resources(sc, dev);
 902         return 0;
 903 }
 904
 905 static int
 906 ess_resume(device_t dev)
 907 {
 908         struct ess_info *sc;
 909
 910         sc = pcm_getdevinfo(dev);
 911
 912         if (ess_reset_dsp(sc)) {
 913                 device_printf(dev, "unable to reset DSP at resume\n");
 914                 return ENXIO;
 915         }
 916
 917         if (mixer_reinit(dev)) {
 918                 device_printf(dev, "unable to reinitialize mixer at resume\n");
 919                 return ENXIO;
 920         }
 921
 922         return 0;
 923 }
 924
 925 static device_method_t ess_methods[] = {
 926         /* Device interface */
 927         DEVMETHOD(device_probe,         ess_probe),
 928         DEVMETHOD(device_attach,        ess_attach),
 929         DEVMETHOD(device_detach,        ess_detach),
 930         DEVMETHOD(device_resume,        ess_resume),
 931
 932         { 0, 0 }
 933 };
 934
 935 static driver_t ess_driver = {
 936         "pcm",
 937         ess_methods,
 938         PCM_SOFTC_SIZE,
 939 };
 940
 941 DRIVER_MODULE(snd_ess, sbc, ess_driver, pcm_devclass, 0, 0);
 942 MODULE_DEPEND(snd_ess, sound, SOUND_MINVER, SOUND_PREFVER, SOUND_MAXVER);
 943 MODULE_DEPEND(snd_ess, snd_sbc, 1, 1, 1);
 944 MODULE_VERSION(snd_ess, 1);
 945
 946 /************************************************************/
 947
 948 static devclass_t esscontrol_devclass;
 949
 950 static struct isa_pnp_id essc_ids[] = {
 951         {0x06007316, "ESS Control"},
 952         {0}
 953 };
 954
 955 static int
 956 esscontrol_probe(device_t dev)
 957 {
 958         int i;
 959
 960         i = ISA_PNP_PROBE(device_get_parent(dev), dev, essc_ids);
 961         if (i == 0)
 962                 device_quiet(dev);
 963         return i;
 964 }
 965
 966 static int
 967 esscontrol_attach(device_t dev)
 968 {
 969 #ifdef notyet
 970         struct resource *io;
 971         int rid, i, x;
 972
 973         rid = 0;
 974         io = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE);
 975         x = 0;
 976         for (i = 0; i < 0x100; i++) {
 977                 port_wr(io, 0, i);
 978                 x = port_rd(io, 1);
 979                 if ((i & 0x0f) == 0)
 980                         printf("%3.3x: ", i);
 981                 printf("%2.2x ", x);
 982                 if ((i & 0x0f) == 0x0f)
 983                         printf("\n");
 984         }
 985         bus_release_resource(dev, SYS_RES_IOPORT, 0, io);
 986         io = NULL;
 987 #endif
 988
 989         return 0;
 990 }
 991
 992 static int
 993 esscontrol_detach(device_t dev)
 994 {
 995         return 0;
 996 }
 997
 998 static device_method_t esscontrol_methods[] = {
 999         /* Device interface */
1000         DEVMETHOD(device_probe,         esscontrol_probe),
1001         DEVMETHOD(device_attach,        esscontrol_attach),
1002         DEVMETHOD(device_detach,        esscontrol_detach),
1003
1004         { 0, 0 }
1005 };
1006
1007 static driver_t esscontrol_driver = {
1008         "esscontrol",
1009         esscontrol_methods,
1010         1,
1011 };
1012
1013 DRIVER_MODULE(esscontrol, isa, esscontrol_driver, esscontrol_devclass, 0, 0);
1014 DRIVER_MODULE(esscontrol, acpi, esscontrol_driver, esscontrol_devclass, 0, 0);