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interwave.c revision 1.35
      1 /*	$NetBSD: interwave.c,v 1.35 2011/11/23 23:07:32 jmcneill Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1997, 1999, 2008 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * Author: Kari Mettinen
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     19  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     20  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     21  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     22  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     28  * POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #include <sys/cdefs.h>
     32 __KERNEL_RCSID(0, "$NetBSD: interwave.c,v 1.35 2011/11/23 23:07:32 jmcneill Exp $");
     33 
     34 #include <sys/param.h>
     35 #include <sys/systm.h>
     36 #include <sys/errno.h>
     37 #include <sys/ioctl.h>
     38 #include <sys/syslog.h>
     39 #include <sys/device.h>
     40 #include <sys/proc.h>
     41 #include <sys/buf.h>
     42 #include <sys/fcntl.h>
     43 #include <sys/malloc.h>
     44 #include <sys/kernel.h>
     45 #include <sys/cpu.h>
     46 #include <sys/intr.h>
     47 #include <sys/audioio.h>
     48 
     49 #include <machine/pio.h>
     50 
     51 #include <dev/audio_if.h>
     52 #include <dev/mulaw.h>
     53 
     54 #include <dev/isa/isavar.h>
     55 #include <dev/isa/isadmavar.h>
     56 
     57 #include <dev/ic/interwavereg.h>
     58 #include <dev/ic/interwavevar.h>
     59 
     60 
     61 static void iwreset(struct iw_softc *, int);
     62 
     63 static int iw_set_speed(struct iw_softc *, u_long, char);
     64 static u_long iw_set_format(struct iw_softc *, u_long, int);
     65 static void iw_mixer_line_level(struct iw_softc *, int, int, int);
     66 static void iw_trigger_dma(struct iw_softc *, u_char);
     67 static void iw_stop_dma(struct iw_softc *, u_char, u_char);
     68 static void iw_dma_count(struct iw_softc *, u_short, int);
     69 static int iwintr(void *);
     70 static void iw_meminit(struct iw_softc *);
     71 static void iw_mempoke(struct iw_softc *, u_long, u_char);
     72 static u_char iw_mempeek(struct iw_softc *, u_long);
     73 
     74 #ifdef USE_WAVETABLE
     75 static void iw_set_voice_place(struct iw_softc *, u_char, u_long);
     76 static void iw_voice_pan(struct iw_softc *, u_char, u_short, u_short);
     77 static void iw_voice_freq(struct iw_softc *, u_char, u_long);
     78 static void iw_set_loopmode(struct iw_softc *, u_char, u_char, u_char);
     79 static void iw_set_voice_pos(struct iw_softc *, u_short, u_long, u_long);
     80 static void iw_start_voice(struct iw_softc *, u_char);
     81 static void iw_play_voice(struct iw_softc *, u_long, u_long, u_short);
     82 static void iw_stop_voice(struct iw_softc *, u_char);
     83 static void iw_move_voice_end(struct iw_softc *, u_short, u_long);
     84 static void iw_initvoices(struct iw_softc *);
     85 #endif
     86 
     87 struct audio_device iw_device = {
     88 	"Am78C201",
     89 	"0.1",
     90 	"guspnp"
     91 };
     92 
     93 #ifdef AUDIO_DEBUG
     94 int iw_debug;
     95 #define DPRINTF(p)       if (iw_debug) printf p
     96 #else
     97 #define DPRINTF(p)
     98 #endif
     99 
    100 static int      iw_cc = 1;
    101 #ifdef DIAGNOSTIC
    102 static int      outputs = 0;
    103 static int      iw_ints = 0;
    104 static int      inputs = 0;
    105 static int      iw_inints = 0;
    106 #endif
    107 
    108 int
    109 iwintr(void *arg)
    110 {
    111 	struct	iw_softc *sc;
    112 	int	val;
    113 	u_char	intrs;
    114 
    115 	sc = arg;
    116 	val = 0;
    117 	intrs = 0;
    118 
    119 	mutex_spin_enter(&sc->sc_intr_lock);
    120 
    121 	IW_READ_DIRECT_1(6, sc->p2xr_h, intrs);	/* UISR */
    122 
    123 	/* codec ints */
    124 
    125 	/*
    126 	 * The proper order to do this seems to be to read CSR3 to get the
    127 	 * int cause and fifo over underrrun status, then deal with the ints
    128 	 * (new DMA set up), and to clear ints by writing the respective bit
    129 	 * to 0.
    130 	 */
    131 
    132 	/* read what ints happened */
    133 
    134 	IW_READ_CODEC_1(CSR3I, intrs);
    135 
    136 	/* clear them */
    137 
    138 	IW_WRITE_DIRECT_1(2, sc->codec_index_h, 0x00);
    139 
    140 	/* and process them */
    141 
    142 	if (intrs & 0x20) {
    143 #ifdef DIAGNOSTIC
    144 		iw_inints++;
    145 #endif
    146 		if (sc->sc_recintr != 0)
    147 			sc->sc_recintr(sc->sc_recarg);
    148 		val = 1;
    149 	}
    150 	if (intrs & 0x10) {
    151 #ifdef DIAGNOSTIC
    152 		iw_ints++;
    153 #endif
    154 		if (sc->sc_playintr != 0)
    155 			sc->sc_playintr(sc->sc_playarg);
    156 		val = 1;
    157 	}
    158 
    159 	mutex_spin_exit(&sc->sc_intr_lock);
    160 
    161 	return val;
    162 }
    163 
    164 void
    165 iwattach(struct iw_softc *sc)
    166 {
    167 	int	got_irq;
    168 
    169 	DPRINTF(("iwattach sc %p\n", sc));
    170 	got_irq = 0;
    171 
    172 	sc->cdatap = 1;		/* relative offsets in region */
    173 	sc->csr1r = 2;
    174 	sc->cxdr = 3;		/* CPDR or CRDR */
    175 
    176 	sc->gmxr = 0;		/* sc->p3xr */
    177 	sc->gmxdr = 1;		/* GMTDR or GMRDR */
    178 	sc->svsr = 2;
    179 	sc->igidxr = 3;
    180 	sc->i16dp = 4;
    181 	sc->i8dp = 5;
    182 	sc->lmbdr = 7;
    183 
    184 	sc->rec_precision = sc->play_precision = 8;
    185 	sc->rec_channels = sc->play_channels = 1;
    186 	sc->rec_encoding = sc->play_encoding = AUDIO_ENCODING_ULAW;
    187 	sc->sc_irate = 8000;
    188 	sc->sc_orate = 8000;
    189 
    190 	sc->sc_fullduplex = 1;
    191 
    192 	sc->sc_dma_flags = 0;
    193 
    194 	mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE);
    195 	mutex_init(&sc->sc_intr_lock, MUTEX_DEFAULT, IPL_SCHED);
    196 
    197 	/*
    198 	 * We can only use a few selected irqs, see if we got one from pnp
    199 	 * code that suits us.
    200 	 */
    201 
    202 	if (sc->sc_irq > 0) {
    203 		sc->sc_ih = isa_intr_establish(sc->sc_p2xr_ic,
    204 		    sc->sc_irq, IST_EDGE, IPL_SCHED, iwintr, sc);
    205 		got_irq = 1;
    206 	}
    207 	if (!got_irq) {
    208 		printf("\niwattach: couldn't get a suitable irq\n");
    209 		mutex_destroy(&sc->sc_lock);
    210 		mutex_destroy(&sc->sc_intr_lock);
    211 		return;
    212 	}
    213 	printf("\n");
    214 	iwreset(sc, 0);
    215 	iw_set_format(sc, AUDIO_ENCODING_ULAW, 0);
    216 	iw_set_format(sc, AUDIO_ENCODING_ULAW, 1);
    217 	printf("%s: interwave version %s\n",
    218 	    device_xname(&sc->sc_dev), iw_device.version);
    219 	audio_attach_mi(sc->iw_hw_if, sc, &sc->sc_dev);
    220 }
    221 
    222 int
    223 iwopen(struct iw_softc *sc, int flags)
    224 {
    225 
    226 	DPRINTF(("iwopen: sc %p\n", sc));
    227 
    228 #ifdef DIAGNOSTIC
    229 	outputs = 0;
    230 	iw_ints = 0;
    231 	inputs = 0;
    232 	iw_inints = 0;
    233 #endif
    234 
    235 	iwreset(sc, 1);
    236 
    237 	return 0;
    238 }
    239 
    240 void
    241 iwclose(void *addr)
    242 {
    243 
    244 	DPRINTF(("iwclose sc %p\n", addr));
    245 #ifdef DIAGNOSTIC
    246 	DPRINTF(("iwclose: outputs %d ints %d inputs %d in_ints %d\n",
    247 		outputs, iw_ints, inputs, iw_inints));
    248 #endif
    249 }
    250 
    251 #define RAM_STEP	64*1024
    252 
    253 static void
    254 iw_mempoke(struct iw_softc *sc, u_long addy, u_char val)
    255 {
    256 
    257 	IW_WRITE_GENERAL_2(LMALI, (u_short) addy);
    258 	IW_WRITE_GENERAL_1(LMAHI, (u_char) (addy >> 16));
    259 
    260 	/* Write byte to LMBDR */
    261 	IW_WRITE_DIRECT_1(sc->p3xr + 7, sc->p3xr_h, val);
    262 }
    263 
    264 static u_char
    265 iw_mempeek(struct iw_softc *sc, u_long addy)
    266 {
    267 	u_char	ret;
    268 
    269 	IW_WRITE_GENERAL_2(LMALI, (u_short) addy);
    270 	IW_WRITE_GENERAL_1(LMAHI, (u_char) (addy >> 16));
    271 
    272 	IW_READ_DIRECT_1(sc->p3xr + 7, sc->p3xr_h, ret);
    273 	return ret;		/* return byte from LMBDR */
    274 }
    275 
    276 static void
    277 iw_meminit(struct iw_softc *sc)
    278 {
    279 	u_long	bank[4] = {0L, 0L, 0L, 0L};
    280 	u_long	addr, base, cnt;
    281 	u_char	i, ram /* ,memval=0 */ ;
    282 	u_short	lmcfi;
    283 	u_long	temppi;
    284 	u_long	*lpbanks;
    285 
    286 	addr = 0L;
    287 	base = 0L;
    288 	cnt = 0L;
    289 	ram = 0;
    290 	lpbanks = &temppi;
    291 
    292 	IW_WRITE_GENERAL_1(LDMACI, 0x00);
    293 
    294 	IW_READ_GENERAL_2(LMCFI, lmcfi);	/* 0x52 */
    295 	lmcfi |= 0x0A0C;
    296 	IW_WRITE_GENERAL_2(LMCFI, lmcfi);	/* max addr span */
    297 	IW_WRITE_GENERAL_1(LMCI, 0x00);
    298 
    299 	/* fifo addresses */
    300 
    301 	IW_WRITE_GENERAL_2(LMRFAI, ((4 * 1024 * 1024) >> 8));
    302 	IW_WRITE_GENERAL_2(LMPFAI, ((4 * 1024 * 1024 + 16 * 1024) >> 8));
    303 
    304 	IW_WRITE_GENERAL_2(LMFSI, 0x000);
    305 
    306 	IW_WRITE_GENERAL_2(LDICI, 0x0000);
    307 
    308 	while (addr < (16 * 1024 * 1024)) {
    309 		iw_mempoke(sc, addr, 0x00);
    310 		addr += RAM_STEP;
    311 	}
    312 
    313 	printf("%s:", device_xname(&sc->sc_dev));
    314 
    315 	for (i = 0; i < 4; i++) {
    316 		iw_mempoke(sc, base, 0xAA);	/* mark start of bank */
    317 		iw_mempoke(sc, base + 1L, 0x55);
    318 		if (iw_mempeek(sc, base) == 0xAA  &&
    319 		    iw_mempeek(sc, base + 1L) == 0x55)
    320 			ram = 1;
    321 		if (ram) {
    322 			while (cnt < (4 * 1024 * 1024)) {
    323 				bank[i] += RAM_STEP;
    324 				cnt += RAM_STEP;
    325 				addr = base + cnt;
    326 				if (iw_mempeek(sc, addr) == 0xAA)
    327 					break;
    328 			}
    329 		}
    330 		if (lpbanks != NULL) {
    331 			*lpbanks = bank[i];
    332 			lpbanks++;
    333 		}
    334 		bank[i] = bank[i] >> 10;
    335 		printf("%s bank[%d]: %ldK", i ? "," : "", i, bank[i]);
    336 		base += 4 * 1024 * 1024;
    337 		cnt = 0L;
    338 		ram = 0;
    339 	}
    340 
    341 	printf("\n");
    342 
    343 	/*
    344 	 * this is not really useful since GUS PnP supports memory
    345 	 * configurations that aren't really supported by Interwave...beware
    346 	 * of holes! Also, we don't use the memory for anything in this
    347 	 * version of the driver.
    348 	 *
    349 	 * we've configured for 4M-4M-4M-4M
    350 	 */
    351 }
    352 
    353 static void
    354 iwreset(struct iw_softc *sc, int warm)
    355 {
    356 	u_char	reg, cmode, val, mixer_image;
    357 
    358 	val = 0;
    359 	mixer_image = 0;
    360 	reg = 0;		/* XXX gcc -Wall */
    361 
    362 	cmode = 0x6c;		/* enhanced codec mode (full duplex) */
    363 
    364 	/* reset */
    365 
    366 	IW_WRITE_GENERAL_1(URSTI, 0x00);
    367 	delay(10);
    368 	IW_WRITE_GENERAL_1(URSTI, 0x07);
    369 	IW_WRITE_GENERAL_1(ICMPTI, 0x1f);	/* disable DSP and uici and
    370 						 * udci writes */
    371 	IW_WRITE_GENERAL_1(IDECI, 0x7f);	/* enable ints to ISA and
    372 						 * codec access */
    373 	IW_READ_GENERAL_1(IVERI, reg);
    374 	IW_WRITE_GENERAL_1(IVERI, reg | 0x01);	/* hidden reg lock disable */
    375 	IW_WRITE_GENERAL_1(UASBCI, 0x00);
    376 
    377 	/* synth enhanced mode (default), 0 active voices, disable ints */
    378 
    379 	IW_WRITE_GENERAL_1(SGMI_WR, 0x01);	/* enhanced mode, LFOs
    380 						 * disabled */
    381 	for (val = 0; val < 32; val++) {
    382 		/* set each synth sound volume to 0 */
    383 		IW_WRITE_DIRECT_1(sc->p3xr + 2, sc->p3xr_h, val);
    384 		IW_WRITE_GENERAL_1(SVSI_WR, 0x00);
    385 		IW_WRITE_GENERAL_2(SASLI_WR, 0x0000);
    386 		IW_WRITE_GENERAL_2(SASHI_WR, 0x0000);
    387 		IW_WRITE_GENERAL_2(SAELI_WR, 0x0000);
    388 		IW_WRITE_GENERAL_2(SAEHI_WR, 0x0000);
    389 		IW_WRITE_GENERAL_2(SFCI_WR, 0x0000);
    390 		IW_WRITE_GENERAL_1(SACI_WR, 0x02);
    391 		IW_WRITE_GENERAL_1(SVSI_WR, 0x00);
    392 		IW_WRITE_GENERAL_1(SVEI_WR, 0x00);
    393 		IW_WRITE_GENERAL_2(SVLI_WR, 0x0000);
    394 		IW_WRITE_GENERAL_1(SVCI_WR, 0x02);
    395 		IW_WRITE_GENERAL_1(SMSI_WR, 0x02);
    396 	}
    397 
    398 	IW_WRITE_GENERAL_1(SAVI_WR, 0x00);
    399 
    400 	/* codec mode/init */
    401 
    402 	/* first change mode to 1 */
    403 
    404 	IW_WRITE_CODEC_1(CMODEI, 0x00);
    405 
    406 	/* and mode 3 */
    407 
    408 	IW_WRITE_CODEC_1(CMODEI, cmode);
    409 
    410 	IW_READ_CODEC_1(CMODEI, reg);
    411 
    412 	DPRINTF(("cmode %x\n", reg));
    413 
    414 	sc->revision = ((reg & 0x80) >> 3) | (reg & 0x0f);
    415 
    416 	IW_WRITE_DIRECT_1(sc->codec_index + 2, sc->p2xr_h, 0x00);
    417 
    418 	IW_WRITE_CODEC_1(CFIG1I | IW_MCE, 0x00);	/* DMA 2 chan access */
    419 	IW_WRITE_CODEC_1(CEXTI, 0x00);	/* disable ints for now */
    420 
    421 
    422 	IW_WRITE_CODEC_1(CLPCTI, 0x00);	/* reset playback sample counters */
    423 	IW_WRITE_CODEC_1(CUPCTI, 0x00);	/* always upper byte last */
    424 	IW_WRITE_CODEC_1(CFIG2I, 0x80);	/* full voltage range, enable record
    425 					 * and playback sample counters, and
    426 					 * don't center output in case or
    427 					 * FIFO underrun */
    428 	IW_WRITE_CODEC_1(CFIG3I, 0xc0);	/* enable record/playback irq (still
    429 					 * turned off from CEXTI), max DMA
    430 					 * rate */
    431 	IW_WRITE_CODEC_1(CSR3I, 0x00);	/* clear status 3 reg */
    432 
    433 
    434 	IW_WRITE_CODEC_1(CLRCTI, 0x00);	/* reset record sample counters */
    435 	IW_WRITE_CODEC_1(CURCTI, 0x00);	/* always upper byte last */
    436 
    437 
    438 	IW_READ_GENERAL_1(IVERI, reg);
    439 
    440 	sc->vers = reg >> 4;
    441 	if (!warm)
    442 		snprintf(iw_device.version, sizeof(iw_device.version), "%d.%d",
    443 		    sc->vers, sc->revision);
    444 
    445 	IW_WRITE_GENERAL_1(IDECI, 0x7f);	/* irqs and codec decode
    446 						 * enable */
    447 
    448 
    449 	/* ports */
    450 
    451 	if (!warm) {
    452 		iw_mixer_line_level(sc, IW_LINE_OUT, 255, 255);
    453 		iw_mixer_line_level(sc, IW_LINE_IN, 0, 0);
    454 		iw_mixer_line_level(sc, IW_AUX1, 0, 0);
    455 		iw_mixer_line_level(sc, IW_AUX2, 200, 200); /* CD */
    456 		sc->sc_dac.off = 0;
    457 		iw_mixer_line_level(sc, IW_DAC, 200, 200);
    458 
    459 		iw_mixer_line_level(sc, IW_MIC_IN, 0, 0);
    460 		iw_mixer_line_level(sc, IW_REC, 0, 0);
    461 		iw_mixer_line_level(sc, IW_LOOPBACK, 0, 0);
    462 		iw_mixer_line_level(sc, IW_MONO_IN, 0, 0);
    463 
    464 		/* mem stuff */
    465 		iw_meminit(sc);
    466 
    467 	}
    468 	IW_WRITE_CODEC_1(CEXTI, 0x02);	/* codec int enable */
    469 
    470 	/* clear _LDMACI */
    471 
    472 	IW_WRITE_GENERAL_1(LDMACI, 0x00);
    473 
    474 	/* enable mixer paths */
    475 	mixer_image = 0x0c;
    476 	IW_WRITE_DIRECT_1(sc->p2xr, sc->p2xr_h, mixer_image);
    477 	/*
    478 	 * enable output, line in. disable mic in bit 0 = 0 -> line in on
    479 	 * (from codec?) bit 1 = 0 -> output on bit 2 = 1 -> mic in on bit 3
    480 	 * = 1 -> irq&drq pin enable bit 4 = 1 -> channel interrupts to chan
    481 	 * 1 bit 5 = 1 -> enable midi loop back bit 6 = 0 -> irq latches
    482 	 * URCR[2:0] bit 6 = 1 -> DMA latches URCR[2:0]
    483 	 */
    484 
    485 
    486 	IW_READ_DIRECT_1(sc->p2xr, sc->p2xr_h, mixer_image);
    487 #ifdef AUDIO_DEBUG
    488 	if (!warm)
    489 		DPRINTF(("mix image %x \n", mixer_image));
    490 #endif
    491 }
    492 
    493 struct iw_codec_freq {
    494 	u_long	freq;
    495 	u_char	bits;
    496 };
    497 
    498 int
    499 iw_set_speed(struct iw_softc *sc, u_long freq, char in)
    500 {
    501 	u_char	var, cfig3, reg;
    502 
    503 	static struct iw_codec_freq iw_cf[17] = {
    504 #define FREQ_1 24576000
    505 #define FREQ_2 16934400
    506 #define XTAL1 0
    507 #define XTAL2 1
    508 		{5510, 0x00 | XTAL2}, {6620, 0x0E | XTAL2},
    509 		{8000, 0x00 | XTAL1}, {9600, 0x0E | XTAL1},
    510 		{11025, 0x02 | XTAL2}, {16000, 0x02 | XTAL1},
    511 		{18900, 0x04 | XTAL2}, {22050, 0x06 | XTAL2},
    512 		{27420, 0x04 | XTAL1}, {32000, 0x06 | XTAL1},
    513 		{33075, 0x0C | XTAL2}, {37800, 0x08 | XTAL2},
    514 		{38400, 0x0A | XTAL1}, {44100, 0x0A | XTAL2},
    515 		{44800, 0x08 | XTAL1}, {48000, 0x0C | XTAL1},
    516 		{48000, 0x0C | XTAL1}	/* really a dummy for indexing later */
    517 #undef XTAL1
    518 #undef XTAL2
    519 	};
    520 
    521 	cfig3 = 0;		/* XXX gcc -Wall */
    522 
    523 	/*
    524 	 * if the frequency is between 3493 Hz and 32 kHz we can use a more
    525 	 * accurate frequency than the ones listed above base on the formula
    526 	 * FREQ/((16*(48+x))) where FREQ is either FREQ_1 (24576000Hz) or
    527 	 * FREQ_2 (16934400Hz) and x is the value to be written to either
    528 	 * CPVFI or CRVFI. To enable this option, bit 2 in CFIG3 needs to be
    529 	 * set high
    530 	 *
    531 	 * NOT IMPLEMENTED!
    532 	 *
    533 	 * Note that if you have a 'bad' XTAL_1 (higher than 18.5 MHz), 44.8 kHz
    534 	 * and 38.4 kHz modes will provide wrong frequencies to output.
    535 	 */
    536 
    537 
    538 	if (freq > 48000)
    539 		freq = 48000;
    540 	if (freq < 5510)
    541 		freq = 5510;
    542 
    543 	/* reset CFIG3[2] */
    544 
    545 	IW_READ_CODEC_1(CFIG3I, cfig3);
    546 
    547 	cfig3 |= 0xc0;		/* not full fifo treshhold */
    548 
    549 	DPRINTF(("cfig3i = %x -> ", cfig3));
    550 
    551 	cfig3 &= ~0x04;
    552 	IW_WRITE_CODEC_1(CFIG3I, cfig3);
    553 	IW_READ_CODEC_1(CFIG3I, cfig3);
    554 
    555 	DPRINTF(("%x\n", cfig3));
    556 
    557 	for (var = 0; var < 16; var++)	/* select closest frequency */
    558 		if (freq <= iw_cf[var].freq)
    559 			break;
    560 	if (var != 16)
    561 		if (abs(freq - iw_cf[var].freq) > abs(iw_cf[var + 1].freq - freq))
    562 			var++;
    563 
    564 	if (in)
    565 		IW_WRITE_CODEC_1(CRDFI | IW_MCE, sc->recfmtbits | iw_cf[var].bits);
    566 	else
    567 		IW_WRITE_CODEC_1(CPDFI | IW_MCE, sc->playfmtbits | iw_cf[var].bits);
    568 	freq = iw_cf[var].freq;
    569 	DPRINTF(("setting %s frequency to %d bits %x \n",
    570 	       in ? "in" : "out", (int) freq, iw_cf[var].bits));
    571 
    572 	IW_READ_CODEC_1(CPDFI, reg);
    573 
    574 	DPRINTF((" CPDFI %x ", reg));
    575 
    576 	IW_READ_CODEC_1(CRDFI, reg);
    577 
    578 	DPRINTF((" CRDFI %x ", reg));
    579 
    580 	return freq;
    581 }
    582 
    583 /* Encoding. */
    584 int
    585 iw_query_encoding(void *addr, audio_encoding_t *fp)
    586 {
    587 	/*
    588 	 * LINEAR, ALAW, ULAW, ADPCM in HW, we'll use linear unsigned
    589 	 * hardware mode for all 8-bit modes due to buggy (?) codec.
    590 	 */
    591 
    592 	/*
    593 	 * except in wavetable synth. there we have only mu-law and 8 and 16
    594 	 * bit linear data
    595 	 */
    596 
    597 	switch (fp->index) {
    598 	case 0:
    599 		strcpy(fp->name, AudioEulinear);
    600 		fp->encoding = AUDIO_ENCODING_ULINEAR_LE;
    601 		fp->precision = 8;
    602 		fp->flags = 0;
    603 		break;
    604 	case 1:
    605 		strcpy(fp->name, AudioEmulaw);
    606 		fp->encoding = AUDIO_ENCODING_ULAW;
    607 		fp->precision = 8;
    608 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
    609 		break;
    610 	case 2:
    611 		strcpy(fp->name, AudioEalaw);
    612 		fp->encoding = AUDIO_ENCODING_ALAW;
    613 		fp->precision = 8;
    614 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
    615 		break;
    616 	case 3:
    617 		strcpy(fp->name, AudioEadpcm);
    618 		fp->encoding = AUDIO_ENCODING_ADPCM;
    619 		fp->precision = 8;	/* really 4 bit */
    620 		fp->flags = 0;
    621 		break;
    622 	case 4:
    623 		strcpy(fp->name, AudioEslinear_le);
    624 		fp->encoding = AUDIO_ENCODING_SLINEAR_LE;
    625 		fp->precision = 16;
    626 		fp->flags = 0;
    627 		break;
    628 	case 5:
    629 		strcpy(fp->name, AudioEslinear_be);
    630 		fp->encoding = AUDIO_ENCODING_SLINEAR_BE;
    631 		fp->precision = 16;
    632 		fp->flags = 0;
    633 		break;
    634 	default:
    635 		return EINVAL;
    636 		/* NOTREACHED */
    637 	}
    638 	return 0;
    639 }
    640 
    641 u_long
    642 iw_set_format(struct iw_softc *sc, u_long precision, int in)
    643 {
    644 	u_char	data;
    645 	int	encoding, channels;
    646 
    647 	encoding = in ? sc->rec_encoding : sc->play_encoding;
    648 	channels = in ? sc->rec_channels : sc->play_channels;
    649 
    650 	DPRINTF(("iw_set_format\n"));
    651 
    652 	switch (encoding) {
    653 	case AUDIO_ENCODING_ULAW:
    654 		data = 0x00;
    655 		break;
    656 
    657 	case AUDIO_ENCODING_ALAW:
    658 		data = 0x00;
    659 		break;
    660 
    661 	case AUDIO_ENCODING_SLINEAR_LE:
    662 		if (precision == 16)
    663 			data = 0x40;	/* little endian. 0xc0 is big endian */
    664 		else
    665 			data = 0x00;
    666 		break;
    667 
    668 	case AUDIO_ENCODING_SLINEAR_BE:
    669 		if (precision == 16)
    670 			data = 0xc0;
    671 		else
    672 			data = 0x00;
    673 		break;
    674 
    675 	case AUDIO_ENCODING_ADPCM:
    676 		data = 0xa0;
    677 		break;
    678 
    679 	default:
    680 		return -1;
    681 	}
    682 
    683 	if (channels == 2)
    684 		data |= 0x10;	/* stereo */
    685 
    686 	if (in) {
    687 		/* in */
    688 		sc->recfmtbits = data;
    689 		/* This will zero the normal codec frequency,
    690 		 * iw_set_speed should always be called afterwards.
    691 		 */
    692 		IW_WRITE_CODEC_1(CRDFI | IW_MCE, data);
    693 	} else {
    694 		/* out */
    695 		sc->playfmtbits = data;
    696 		IW_WRITE_CODEC_1(CPDFI | IW_MCE, data);
    697 	}
    698 
    699 	DPRINTF(("formatbits %s %x", in ? "in" : "out", data));
    700 
    701 	return encoding;
    702 }
    703 
    704 int
    705 iw_set_params(void *addr, int setmode, int usemode, audio_params_t *p,
    706     audio_params_t *q, stream_filter_list_t *pfil, stream_filter_list_t *rfil)
    707 {
    708 	audio_params_t phw, rhw;
    709 	struct iw_softc *sc;
    710 	stream_filter_factory_t *swcode;
    711 
    712 	DPRINTF(("iw_setparams: code %u, prec %u, rate %u, chan %u\n",
    713 	    p->encoding, p->precision, p->sample_rate, p->channels));
    714 	sc = addr;
    715 	swcode = NULL;
    716 	phw = *p;
    717 	rhw = *q;
    718 	switch (p->encoding) {
    719 	case AUDIO_ENCODING_ULAW:
    720 		if (p->precision != 8)
    721 			return EINVAL;
    722 		phw.encoding = AUDIO_ENCODING_ULINEAR_LE;
    723 		rhw.encoding = AUDIO_ENCODING_ULINEAR_LE;
    724 		swcode = setmode & AUMODE_PLAY ? mulaw_to_linear8 : linear8_to_mulaw;
    725 		break;
    726 	case AUDIO_ENCODING_ALAW:
    727 		if (p->precision != 8)
    728 			return EINVAL;
    729 		phw.encoding = AUDIO_ENCODING_ULINEAR_LE;
    730 		rhw.encoding = AUDIO_ENCODING_ULINEAR_LE;
    731 		swcode = setmode & AUMODE_PLAY ? alaw_to_linear8 : linear8_to_alaw;
    732 		break;
    733 	case AUDIO_ENCODING_ADPCM:
    734 		if (p->precision != 8)
    735 			return EINVAL;
    736 		else
    737 			break;
    738 
    739 	case AUDIO_ENCODING_SLINEAR_LE:
    740 	case AUDIO_ENCODING_SLINEAR_BE:
    741 		if (p->precision != 8 && p->precision != 16)
    742 			return EINVAL;
    743 		else
    744 			break;
    745 
    746 	default:
    747 		return EINVAL;
    748 
    749 	}
    750 
    751 	if (setmode & AUMODE_PLAY) {
    752 		sc->play_channels = p->channels;
    753 		sc->play_encoding = p->encoding;
    754 		sc->play_precision = p->precision;
    755 		iw_set_format(sc, p->precision, 0);
    756 		q->sample_rate = p->sample_rate = sc->sc_orate =
    757 			iw_set_speed(sc, p->sample_rate, 0);
    758 		if (swcode != NULL) {
    759 			phw.sample_rate = p->sample_rate;
    760 			pfil->append(pfil, swcode, &phw);
    761 		}
    762 	} else {
    763 #if 0
    764 		q->channels = sc->rec_channels = p->channels;
    765 		q->encoding = sc->rec_encoding = p->encoding;
    766 		q->precision = sc->rec_precision = p->precision;
    767 #endif
    768 		sc->rec_channels = q->channels;
    769 		sc->rec_encoding = q->encoding;
    770 		sc->rec_precision = q->precision;
    771 
    772 		iw_set_format(sc, p->precision, 1);
    773 		q->sample_rate = sc->sc_irate =
    774 			iw_set_speed(sc, q->sample_rate, 1);
    775 		if (swcode != NULL) {
    776 			rhw.sample_rate = q->sample_rate;
    777 			rfil->append(rfil, swcode, &rhw);
    778 		}
    779 	}
    780 	return 0;
    781 }
    782 
    783 
    784 int
    785 iw_round_blocksize(void *addr, int blk, int mode,
    786     const audio_params_t *param)
    787 {
    788 
    789 	/* Round to a multiple of the biggest sample size. */
    790 	return blk &= -4;
    791 }
    792 
    793 void
    794 iw_mixer_line_level(struct iw_softc *sc, int line, int levl, int levr)
    795 {
    796 	u_char	gainl, gainr, attenl, attenr;
    797 
    798 	switch (line) {
    799 	case IW_REC:
    800 		gainl = sc->sc_recsrcbits | (levl >> 4);
    801 		gainr = sc->sc_recsrcbits | (levr >> 4);
    802 		DPRINTF(("recording with %x", gainl));
    803 		IW_WRITE_CODEC_1(CLICI, gainl);
    804 		IW_WRITE_CODEC_1(CRICI, gainr);
    805 		sc->sc_rec.voll = levl & 0xf0;
    806 		sc->sc_rec.volr = levr & 0xf0;
    807 		break;
    808 
    809 	case IW_AUX1:
    810 
    811 		gainl = (255 - levl) >> 3;
    812 		gainr = (255 - levr) >> 3;
    813 
    814 		/* mute if 0 level */
    815 		if (levl == 0)
    816 			gainl |= 0x80;
    817 		if (levr == 0)
    818 			gainr |= 0x80;
    819 
    820 		IW_WRITE_CODEC_1(IW_LEFT_AUX1_PORT, gainl);
    821 		IW_WRITE_CODEC_1(IW_RIGHT_AUX1_PORT, gainr);
    822 		sc->sc_aux1.voll = levl & 0xf8;
    823 		sc->sc_aux1.volr = levr & 0xf8;
    824 
    825 		break;
    826 
    827 	case IW_AUX2:
    828 
    829 		gainl = (255 - levl) >> 3;
    830 		gainr = (255 - levr) >> 3;
    831 
    832 		/* mute if 0 level */
    833 		if (levl == 0)
    834 			gainl |= 0x80;
    835 		if (levr == 0)
    836 			gainr |= 0x80;
    837 
    838 		IW_WRITE_CODEC_1(IW_LEFT_AUX2_PORT, gainl);
    839 		IW_WRITE_CODEC_1(IW_RIGHT_AUX2_PORT, gainr);
    840 		sc->sc_aux2.voll = levl & 0xf8;
    841 		sc->sc_aux2.volr = levr & 0xf8;
    842 		break;
    843 	case IW_DAC:
    844 		attenl = ((255 - levl) >> 2) | ((levl && !sc->sc_dac.off) ? 0 : 0x80);
    845 		attenr = ((255 - levr) >> 2) | ((levr && !sc->sc_dac.off) ? 0 : 0x80);
    846 		IW_WRITE_CODEC_1(CLDACI, attenl);
    847 		IW_WRITE_CODEC_1(CRDACI, attenr);
    848 		sc->sc_dac.voll = levl & 0xfc;
    849 		sc->sc_dac.volr = levr & 0xfc;
    850 		break;
    851 	case IW_LOOPBACK:
    852 		attenl = ((255 - levl) & 0xfc) | (levl ? 0x01 : 0);
    853 		IW_WRITE_CODEC_1(CLCI, attenl);
    854 		sc->sc_loopback.voll = levl & 0xfc;
    855 		break;
    856 	case IW_LINE_IN:
    857 		gainl = (levl >> 3) | (levl ? 0 : 0x80);
    858 		gainr = (levr >> 3) | (levr ? 0 : 0x80);
    859 		IW_WRITE_CODEC_1(CLLICI, gainl);
    860 		IW_WRITE_CODEC_1(CRLICI, gainr);
    861 		sc->sc_linein.voll = levl & 0xf8;
    862 		sc->sc_linein.volr = levr & 0xf8;
    863 		break;
    864 	case IW_MIC_IN:
    865 		gainl = ((255 - levl) >> 3) | (levl ? 0 : 0x80);
    866 		gainr = ((255 - levr) >> 3) | (levr ? 0 : 0x80);
    867 		IW_WRITE_CODEC_1(CLMICI, gainl);
    868 		IW_WRITE_CODEC_1(CRMICI, gainr);
    869 		sc->sc_mic.voll = levl & 0xf8;
    870 		sc->sc_mic.volr = levr & 0xf8;
    871 		break;
    872 	case IW_LINE_OUT:
    873 		attenl = ((255 - levl) >> 3) | (levl ? 0 : 0x80);
    874 		attenr = ((255 - levr) >> 3) | (levr ? 0 : 0x80);
    875 		IW_WRITE_CODEC_1(CLOAI, attenl);
    876 		IW_WRITE_CODEC_1(CROAI, attenr);
    877 		sc->sc_lineout.voll = levl & 0xf8;
    878 		sc->sc_lineout.volr = levr & 0xf8;
    879 		break;
    880 	case IW_MONO_IN:
    881 		attenl = ((255 - levl) >> 4) | (levl ? 0 : 0xc0);	/* in/out mute */
    882 		IW_WRITE_CODEC_1(CMONOI, attenl);
    883 		sc->sc_monoin.voll = levl & 0xf0;
    884 		break;
    885 	}
    886 }
    887 
    888 int
    889 iw_commit_settings(void *addr)
    890 {
    891 
    892 	return 0;
    893 }
    894 
    895 void
    896 iw_trigger_dma(struct iw_softc *sc, u_char io)
    897 {
    898 	u_char	reg;
    899 
    900 	IW_READ_CODEC_1(CSR3I, reg);
    901 	IW_WRITE_CODEC_1(CSR3I, reg & ~(io == IW_DMA_PLAYBACK ? 0x10 : 0x20));
    902 
    903 	IW_READ_CODEC_1(CFIG1I, reg);
    904 
    905 	IW_WRITE_CODEC_1(CFIG1I, reg | io);
    906 
    907 	/* let the counter run */
    908 	IW_READ_CODEC_1(CFIG2I, reg);
    909 	IW_WRITE_CODEC_1(CFIG2I, reg & ~(io << 4));
    910 }
    911 
    912 void
    913 iw_stop_dma(struct iw_softc *sc, u_char io, u_char hard)
    914 {
    915 	u_char	reg;
    916 
    917 	/* just stop the counter, no need to flush the fifo */
    918 	IW_READ_CODEC_1(CFIG2I, reg);
    919 	IW_WRITE_CODEC_1(CFIG2I, (reg | (io << 4)));
    920 
    921 	if (hard) {
    922 		/* unless we're closing the device */
    923 		IW_READ_CODEC_1(CFIG1I, reg);
    924 		IW_WRITE_CODEC_1(CFIG1I, reg & ~io);
    925 	}
    926 }
    927 
    928 void
    929 iw_dma_count(struct iw_softc *sc, u_short count, int io)
    930 {
    931 
    932 	if (io == IW_DMA_PLAYBACK) {
    933 		IW_WRITE_CODEC_1(CLPCTI, (u_char) (count & 0x00ff));
    934 		IW_WRITE_CODEC_1(CUPCTI, (u_char) ((count >> 8) & 0x00ff));
    935 	} else {
    936 		IW_WRITE_CODEC_1(CLRCTI, (u_char) (count & 0x00ff));
    937 		IW_WRITE_CODEC_1(CURCTI, (u_char) ((count >> 8) & 0x00ff));
    938 	}
    939 }
    940 
    941 int
    942 iw_init_output(void *addr, void *sbuf, int cc)
    943 {
    944 	struct iw_softc *sc = (struct iw_softc *) addr;
    945 
    946 	DPRINTF(("iw_init_output\n"));
    947 
    948 	isa_dmastart(sc->sc_ic, sc->sc_playdrq, sbuf,
    949 		     cc, NULL, DMAMODE_WRITE | DMAMODE_LOOP, BUS_DMA_NOWAIT);
    950 	return 0;
    951 }
    952 
    953 int
    954 iw_init_input(void *addr, void *sbuf, int cc)
    955 {
    956 	struct	iw_softc *sc;
    957 
    958 	DPRINTF(("iw_init_input\n"));
    959 	sc = (struct iw_softc *) addr;
    960 	isa_dmastart(sc->sc_ic, sc->sc_recdrq, sbuf,
    961 		     cc, NULL, DMAMODE_READ | DMAMODE_LOOP, BUS_DMA_NOWAIT);
    962 	return 0;
    963 }
    964 
    965 
    966 int
    967 iw_start_output(void *addr, void *p, int cc, void (*intr)(void *), void *arg)
    968 {
    969 	struct	iw_softc *sc;
    970 
    971 #ifdef DIAGNOSTIC
    972 	if (!intr) {
    973 		printf("iw_start_output: no callback!\n");
    974 		return 1;
    975 	}
    976 #endif
    977 	sc = addr;
    978 	sc->sc_playintr = intr;
    979 	sc->sc_playarg = arg;
    980 	sc->sc_dma_flags |= DMAMODE_WRITE;
    981 	sc->sc_playdma_bp = p;
    982 
    983 	isa_dmastart(sc->sc_ic, sc->sc_playdrq, sc->sc_playdma_bp,
    984 	    cc, NULL, DMAMODE_WRITE, BUS_DMA_NOWAIT);
    985 
    986 
    987 	if (sc->play_encoding == AUDIO_ENCODING_ADPCM)
    988 		cc >>= 2;
    989 	if (sc->play_precision == 16)
    990 		cc >>= 1;
    991 
    992 	if (sc->play_channels == 2 && sc->play_encoding != AUDIO_ENCODING_ADPCM)
    993 		cc >>= 1;
    994 
    995 	cc -= iw_cc;
    996 
    997 	/* iw_dma_access(sc,1); */
    998 	if (cc != sc->sc_playdma_cnt) {
    999 		iw_dma_count(sc, (u_short) cc, IW_DMA_PLAYBACK);
   1000 		sc->sc_playdma_cnt = cc;
   1001 
   1002 		iw_trigger_dma(sc, IW_DMA_PLAYBACK);
   1003 	}
   1004 
   1005 #ifdef DIAGNOSTIC
   1006 	if (outputs != iw_ints)
   1007 		printf("iw_start_output: out %d, int %d\n", outputs, iw_ints);
   1008 	outputs++;
   1009 #endif
   1010 
   1011 	return 0;
   1012 }
   1013 
   1014 
   1015 int
   1016 iw_start_input(void *addr, void *p, int cc, void (*intr)(void *), void *arg)
   1017 {
   1018 	struct	iw_softc *sc;
   1019 
   1020 #ifdef DIAGNOSTIC
   1021 	if (!intr) {
   1022 		printf("iw_start_input: no callback!\n");
   1023 		return 1;
   1024 	}
   1025 #endif
   1026 	sc = addr;
   1027 	sc->sc_recintr = intr;
   1028 	sc->sc_recarg = arg;
   1029 	sc->sc_dma_flags |= DMAMODE_READ;
   1030 	sc->sc_recdma_bp = p;
   1031 
   1032 	isa_dmastart(sc->sc_ic, sc->sc_recdrq, sc->sc_recdma_bp,
   1033 	    cc, NULL, DMAMODE_READ, BUS_DMA_NOWAIT);
   1034 
   1035 
   1036 	if (sc->rec_encoding == AUDIO_ENCODING_ADPCM)
   1037 		cc >>= 2;
   1038 	if (sc->rec_precision == 16)
   1039 		cc >>= 1;
   1040 
   1041 	if (sc->rec_channels == 2 && sc->rec_encoding != AUDIO_ENCODING_ADPCM)
   1042 		cc >>= 1;
   1043 
   1044 	cc -= iw_cc;
   1045 
   1046 	/* iw_dma_access(sc,0); */
   1047 	if (sc->sc_recdma_cnt != cc) {
   1048 		iw_dma_count(sc, (u_short) cc, IW_DMA_RECORD);
   1049 		sc->sc_recdma_cnt = cc;
   1050 		/* iw_dma_ctrl(sc, IW_DMA_RECORD); */
   1051 		iw_trigger_dma(sc, IW_DMA_RECORD);
   1052 	}
   1053 
   1054 #ifdef DIAGNOSTIC
   1055 	if ((inputs != iw_inints))
   1056 		printf("iw_start_input: in %d, inints %d\n", inputs, iw_inints);
   1057 	inputs++;
   1058 #endif
   1059 
   1060 	return 0;
   1061 }
   1062 
   1063 
   1064 int
   1065 iw_halt_output(void *addr)
   1066 {
   1067 	struct	iw_softc *sc;
   1068 
   1069 	sc = addr;
   1070 	iw_stop_dma(sc, IW_DMA_PLAYBACK, 0);
   1071 	return 0;
   1072 }
   1073 
   1074 
   1075 int
   1076 iw_halt_input(void *addr)
   1077 {
   1078 	struct	iw_softc *sc;
   1079 
   1080 	sc = addr;
   1081 	iw_stop_dma(sc, IW_DMA_RECORD, 0);
   1082 	return 0;
   1083 }
   1084 
   1085 int
   1086 iw_speaker_ctl(void *addr, int newstate)
   1087 {
   1088 	struct iw_softc *sc;
   1089 	u_char reg;
   1090 
   1091 	sc = addr;
   1092 	if (newstate == SPKR_ON) {
   1093 		sc->sc_dac.off = 0;
   1094 		IW_READ_CODEC_1(CLDACI, reg);
   1095 		IW_WRITE_CODEC_1(CLDACI, reg & 0x7f);
   1096 		IW_READ_CODEC_1(CRDACI, reg);
   1097 		IW_WRITE_CODEC_1(CRDACI, reg & 0x7f);
   1098 	} else {
   1099 		/* SPKR_OFF */
   1100 		sc->sc_dac.off = 1;
   1101 		IW_READ_CODEC_1(CLDACI, reg);
   1102 		IW_WRITE_CODEC_1(CLDACI, reg | 0x80);
   1103 		IW_READ_CODEC_1(CRDACI, reg);
   1104 		IW_WRITE_CODEC_1(CRDACI, reg | 0x80);
   1105 	}
   1106 	return 0;
   1107 }
   1108 
   1109 int
   1110 iw_getdev(void *addr, struct audio_device *retp)
   1111 {
   1112 
   1113 	*retp = iw_device;
   1114 	return 0;
   1115 }
   1116 
   1117 int
   1118 iw_setfd(void *addr, int flag)
   1119 {
   1120 
   1121 	return 0;
   1122 }
   1123 
   1124 /* Mixer (in/out ports) */
   1125 int
   1126 iw_set_port(void *addr, mixer_ctrl_t *cp)
   1127 {
   1128 	struct iw_softc *sc;
   1129 	u_char vall, valr;
   1130 	int error;
   1131 
   1132 	sc = addr;
   1133 	vall = 0;
   1134 	valr = 0;
   1135 	error = EINVAL;
   1136 	switch (cp->dev) {
   1137 	case IW_MIC_IN_LVL:
   1138 		if (cp->type == AUDIO_MIXER_VALUE) {
   1139 			error = 0;
   1140 			if (cp->un.value.num_channels == 1) {
   1141 				vall = valr = cp->un.value.level[0];
   1142 			} else {
   1143 				vall = cp->un.value.level[0];
   1144 				valr = cp->un.value.level[1];
   1145 			}
   1146 			sc->sc_mic.voll = vall;
   1147 			sc->sc_mic.volr = valr;
   1148 			iw_mixer_line_level(sc, IW_MIC_IN, vall, valr);
   1149 		}
   1150 		break;
   1151 	case IW_AUX1_LVL:
   1152 		if (cp->type == AUDIO_MIXER_VALUE) {
   1153 			error = 0;
   1154 			if (cp->un.value.num_channels == 1) {
   1155 				vall = valr = cp->un.value.level[0];
   1156 			} else {
   1157 				vall = cp->un.value.level[0];
   1158 				valr = cp->un.value.level[1];
   1159 			}
   1160 			sc->sc_aux1.voll = vall;
   1161 			sc->sc_aux1.volr = valr;
   1162 			iw_mixer_line_level(sc, IW_AUX1, vall, valr);
   1163 		}
   1164 		break;
   1165 	case IW_AUX2_LVL:
   1166 		if (cp->type == AUDIO_MIXER_VALUE) {
   1167 			error = 0;
   1168 			if (cp->un.value.num_channels == 1) {
   1169 				vall = valr = cp->un.value.level[0];
   1170 			} else {
   1171 				vall = cp->un.value.level[0];
   1172 				valr = cp->un.value.level[1];
   1173 			}
   1174 			sc->sc_aux2.voll = vall;
   1175 			sc->sc_aux2.volr = valr;
   1176 			iw_mixer_line_level(sc, IW_AUX2, vall, valr);
   1177 		}
   1178 		break;
   1179 	case IW_LINE_IN_LVL:
   1180 		if (cp->type == AUDIO_MIXER_VALUE) {
   1181 			error = 0;
   1182 			if (cp->un.value.num_channels == 1) {
   1183 				vall = valr = cp->un.value.level[0];
   1184 			} else {
   1185 				vall = cp->un.value.level[0];
   1186 				valr = cp->un.value.level[1];
   1187 			}
   1188 			sc->sc_linein.voll = vall;
   1189 			sc->sc_linein.volr = valr;
   1190 			iw_mixer_line_level(sc, IW_LINE_IN, vall, valr);
   1191 		}
   1192 		break;
   1193 	case IW_LINE_OUT_LVL:
   1194 		if (cp->type == AUDIO_MIXER_VALUE) {
   1195 			error = 0;
   1196 			if (cp->un.value.num_channels == 1) {
   1197 				vall = valr = cp->un.value.level[0];
   1198 			} else {
   1199 				vall = cp->un.value.level[0];
   1200 				valr = cp->un.value.level[1];
   1201 			}
   1202 			sc->sc_lineout.voll = vall;
   1203 			sc->sc_lineout.volr = valr;
   1204 			iw_mixer_line_level(sc, IW_LINE_OUT, vall, valr);
   1205 		}
   1206 		break;
   1207 	case IW_REC_LVL:
   1208 		if (cp->type == AUDIO_MIXER_VALUE) {
   1209 			error = 0;
   1210 			if (cp->un.value.num_channels == 1) {
   1211 				vall = valr = cp->un.value.level[0];
   1212 			} else {
   1213 				vall = cp->un.value.level[0];
   1214 				valr = cp->un.value.level[1];
   1215 			}
   1216 			sc->sc_rec.voll = vall;
   1217 			sc->sc_rec.volr = valr;
   1218 			iw_mixer_line_level(sc, IW_REC, vall, valr);
   1219 		}
   1220 		break;
   1221 
   1222 	case IW_DAC_LVL:
   1223 		if (cp->type == AUDIO_MIXER_VALUE) {
   1224 			error = 0;
   1225 			if (cp->un.value.num_channels == 1) {
   1226 				vall = valr = cp->un.value.level[0];
   1227 			} else {
   1228 				vall = cp->un.value.level[0];
   1229 				valr = cp->un.value.level[1];
   1230 			}
   1231 			sc->sc_dac.voll = vall;
   1232 			sc->sc_dac.volr = valr;
   1233 			iw_mixer_line_level(sc, IW_DAC, vall, valr);
   1234 		}
   1235 		break;
   1236 
   1237 	case IW_LOOPBACK_LVL:
   1238 		if (cp->type == AUDIO_MIXER_VALUE) {
   1239 			error = 0;
   1240 			if (cp->un.value.num_channels != 1) {
   1241 				return EINVAL;
   1242 			} else {
   1243 				valr = vall = cp->un.value.level[0];
   1244 			}
   1245 			sc->sc_loopback.voll = vall;
   1246 			sc->sc_loopback.volr = valr;
   1247 			iw_mixer_line_level(sc, IW_LOOPBACK, vall, valr);
   1248 		}
   1249 		break;
   1250 
   1251 	case IW_MONO_IN_LVL:
   1252 		if (cp->type == AUDIO_MIXER_VALUE) {
   1253 			error = 0;
   1254 			if (cp->un.value.num_channels != 1) {
   1255 				return EINVAL;
   1256 			} else {
   1257 				valr = vall = cp->un.value.level[0];
   1258 			}
   1259 			sc->sc_monoin.voll = vall;
   1260 			sc->sc_monoin.volr = valr;
   1261 			iw_mixer_line_level(sc, IW_MONO_IN, vall, valr);
   1262 		}
   1263 		break;
   1264 	case IW_RECORD_SOURCE:
   1265 		error = 0;
   1266 		sc->sc_recsrcbits = cp->un.ord << 6;
   1267 		DPRINTF(("record source %d bits %x\n", cp->un.ord, sc->sc_recsrcbits));
   1268 		iw_mixer_line_level(sc, IW_REC, sc->sc_rec.voll, sc->sc_rec.volr);
   1269 		break;
   1270 	}
   1271 
   1272 	return error;
   1273 }
   1274 
   1275 
   1276 int
   1277 iw_get_port(void *addr, mixer_ctrl_t *cp)
   1278 {
   1279 	struct iw_softc *sc;
   1280 	int error;
   1281 
   1282 	sc = addr;
   1283 	error = EINVAL;
   1284 	switch (cp->dev) {
   1285 	case IW_MIC_IN_LVL:
   1286 		if (cp->type == AUDIO_MIXER_VALUE) {
   1287 			cp->un.value.num_channels = 2;
   1288 			cp->un.value.level[0] = sc->sc_mic.voll;
   1289 			cp->un.value.level[1] = sc->sc_mic.volr;
   1290 			error = 0;
   1291 		}
   1292 		break;
   1293 	case IW_AUX1_LVL:
   1294 		if (cp->type == AUDIO_MIXER_VALUE) {
   1295 			cp->un.value.num_channels = 2;
   1296 			cp->un.value.level[0] = sc->sc_aux1.voll;
   1297 			cp->un.value.level[1] = sc->sc_aux1.volr;
   1298 			error = 0;
   1299 		}
   1300 		break;
   1301 	case IW_AUX2_LVL:
   1302 		if (cp->type == AUDIO_MIXER_VALUE) {
   1303 			cp->un.value.num_channels = 2;
   1304 			cp->un.value.level[0] = sc->sc_aux2.voll;
   1305 			cp->un.value.level[1] = sc->sc_aux2.volr;
   1306 			error = 0;
   1307 		}
   1308 		break;
   1309 	case IW_LINE_OUT_LVL:
   1310 		if (cp->type == AUDIO_MIXER_VALUE) {
   1311 			cp->un.value.num_channels = 2;
   1312 			cp->un.value.level[0] = sc->sc_lineout.voll;
   1313 			cp->un.value.level[1] = sc->sc_lineout.volr;
   1314 			error = 0;
   1315 		}
   1316 		break;
   1317 	case IW_LINE_IN_LVL:
   1318 		if (cp->type == AUDIO_MIXER_VALUE) {
   1319 			cp->un.value.num_channels = 2;
   1320 			cp->un.value.level[0] = sc->sc_linein.voll;
   1321 			cp->un.value.level[1] = sc->sc_linein.volr;
   1322 			error = 0;
   1323 		}
   1324 	case IW_REC_LVL:
   1325 		if (cp->type == AUDIO_MIXER_VALUE) {
   1326 			cp->un.value.num_channels = 2;
   1327 			cp->un.value.level[0] = sc->sc_rec.voll;
   1328 			cp->un.value.level[1] = sc->sc_rec.volr;
   1329 			error = 0;
   1330 		}
   1331 		break;
   1332 
   1333 	case IW_DAC_LVL:
   1334 		if (cp->type == AUDIO_MIXER_VALUE) {
   1335 			cp->un.value.num_channels = 2;
   1336 			cp->un.value.level[0] = sc->sc_dac.voll;
   1337 			cp->un.value.level[1] = sc->sc_dac.volr;
   1338 			error = 0;
   1339 		}
   1340 		break;
   1341 
   1342 	case IW_LOOPBACK_LVL:
   1343 		if (cp->type == AUDIO_MIXER_VALUE) {
   1344 			cp->un.value.num_channels = 1;
   1345 			cp->un.value.level[0] = sc->sc_loopback.voll;
   1346 			error = 0;
   1347 		}
   1348 		break;
   1349 
   1350 	case IW_MONO_IN_LVL:
   1351 		if (cp->type == AUDIO_MIXER_VALUE) {
   1352 			cp->un.value.num_channels = 1;
   1353 			cp->un.value.level[0] = sc->sc_monoin.voll;
   1354 			error = 0;
   1355 		}
   1356 		break;
   1357 	case IW_RECORD_SOURCE:
   1358 		cp->un.ord = sc->sc_recsrcbits >> 6;
   1359 		error = 0;
   1360 		break;
   1361 	}
   1362 
   1363 	return error;
   1364 }
   1365 
   1366 
   1367 
   1368 int
   1369 iw_query_devinfo(void *addr, mixer_devinfo_t *dip)
   1370 {
   1371 
   1372 	switch (dip->index) {
   1373 	case IW_MIC_IN_LVL:	/* Microphone */
   1374 		dip->type = AUDIO_MIXER_VALUE;
   1375 		dip->mixer_class = IW_INPUT_CLASS;
   1376 		dip->prev = AUDIO_MIXER_LAST;
   1377 		dip->next = AUDIO_MIXER_LAST;
   1378 		strcpy(dip->label.name, AudioNmicrophone);
   1379 		dip->un.v.num_channels = 2;
   1380 		strcpy(dip->un.v.units.name, AudioNvolume);
   1381 		break;
   1382 	case IW_AUX1_LVL:
   1383 		dip->type = AUDIO_MIXER_VALUE;
   1384 		dip->mixer_class = IW_INPUT_CLASS;
   1385 		dip->prev = AUDIO_MIXER_LAST;
   1386 		dip->next = AUDIO_MIXER_LAST;
   1387 		strcpy(dip->label.name, AudioNline);
   1388 		dip->un.v.num_channels = 2;
   1389 		strcpy(dip->un.v.units.name, AudioNvolume);
   1390 		break;
   1391 	case IW_AUX2_LVL:
   1392 		dip->type = AUDIO_MIXER_VALUE;
   1393 		dip->mixer_class = IW_INPUT_CLASS;
   1394 		dip->prev = AUDIO_MIXER_LAST;
   1395 		dip->next = AUDIO_MIXER_LAST;
   1396 		strcpy(dip->label.name, AudioNcd);
   1397 		dip->un.v.num_channels = 2;
   1398 		strcpy(dip->un.v.units.name, AudioNvolume);
   1399 		break;
   1400 	case IW_LINE_OUT_LVL:
   1401 		dip->type = AUDIO_MIXER_VALUE;
   1402 		dip->mixer_class = IW_OUTPUT_CLASS;
   1403 		dip->prev = AUDIO_MIXER_LAST;
   1404 		dip->next = AUDIO_MIXER_LAST;
   1405 		strcpy(dip->label.name, AudioNline);
   1406 		dip->un.v.num_channels = 2;
   1407 		strcpy(dip->un.v.units.name, AudioNvolume);
   1408 		break;
   1409 	case IW_DAC_LVL:
   1410 		dip->type = AUDIO_MIXER_VALUE;
   1411 		dip->mixer_class = IW_OUTPUT_CLASS;
   1412 		dip->prev = AUDIO_MIXER_LAST;
   1413 		dip->next = AUDIO_MIXER_LAST;
   1414 		strcpy(dip->label.name, AudioNdac);
   1415 		dip->un.v.num_channels = 2;
   1416 		strcpy(dip->un.v.units.name, AudioNvolume);
   1417 		break;
   1418 	case IW_LINE_IN_LVL:
   1419 		dip->type = AUDIO_MIXER_VALUE;
   1420 		dip->mixer_class = IW_INPUT_CLASS;
   1421 		dip->prev = AUDIO_MIXER_LAST;
   1422 		dip->next = AUDIO_MIXER_LAST;
   1423 		strcpy(dip->label.name, AudioNinput);
   1424 		dip->un.v.num_channels = 2;
   1425 		strcpy(dip->un.v.units.name, AudioNvolume);
   1426 		break;
   1427 	case IW_MONO_IN_LVL:
   1428 		dip->type = AUDIO_MIXER_VALUE;
   1429 		dip->mixer_class = IW_INPUT_CLASS;
   1430 		dip->prev = AUDIO_MIXER_LAST;
   1431 		dip->next = AUDIO_MIXER_LAST;
   1432 		strcpy(dip->label.name, AudioNmono);
   1433 		dip->un.v.num_channels = 1;
   1434 		strcpy(dip->un.v.units.name, AudioNvolume);
   1435 		break;
   1436 
   1437 	case IW_REC_LVL:	/* record level */
   1438 		dip->type = AUDIO_MIXER_VALUE;
   1439 		dip->mixer_class = IW_RECORD_CLASS;
   1440 		dip->prev = AUDIO_MIXER_LAST;
   1441 		dip->next = AUDIO_MIXER_LAST;
   1442 		strcpy(dip->label.name, AudioNrecord);
   1443 		dip->un.v.num_channels = 2;
   1444 		strcpy(dip->un.v.units.name, AudioNvolume);
   1445 		break;
   1446 
   1447 	case IW_LOOPBACK_LVL:
   1448 		dip->type = AUDIO_MIXER_VALUE;
   1449 		dip->mixer_class = IW_RECORD_CLASS;
   1450 		dip->prev = AUDIO_MIXER_LAST;
   1451 		dip->next = AUDIO_MIXER_LAST;
   1452 		strcpy(dip->label.name, "filter");
   1453 		dip->un.v.num_channels = 1;
   1454 		strcpy(dip->un.v.units.name, AudioNvolume);
   1455 		break;
   1456 
   1457 	case IW_RECORD_SOURCE:
   1458 		dip->mixer_class = IW_RECORD_CLASS;
   1459 		dip->type = AUDIO_MIXER_ENUM;
   1460 		dip->prev = AUDIO_MIXER_LAST;
   1461 		dip->next = AUDIO_MIXER_LAST;
   1462 		strcpy(dip->label.name, AudioNsource);
   1463 		dip->un.e.num_mem = 4;
   1464 		strcpy(dip->un.e.member[0].label.name, AudioNline);
   1465 		dip->un.e.member[0].ord = IW_LINE_IN_SRC;
   1466 		strcpy(dip->un.e.member[1].label.name, "aux1");
   1467 		dip->un.e.member[1].ord = IW_AUX1_SRC;
   1468 		strcpy(dip->un.e.member[2].label.name, AudioNmicrophone);
   1469 		dip->un.e.member[2].ord = IW_MIC_IN_SRC;
   1470 		strcpy(dip->un.e.member[3].label.name, AudioNmixerout);
   1471 		dip->un.e.member[3].ord = IW_MIX_OUT_SRC;
   1472 		break;
   1473 	case IW_INPUT_CLASS:
   1474 		dip->type = AUDIO_MIXER_CLASS;
   1475 		dip->mixer_class = IW_INPUT_CLASS;
   1476 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1477 		strcpy(dip->label.name, AudioCinputs);
   1478 		break;
   1479 	case IW_OUTPUT_CLASS:
   1480 		dip->type = AUDIO_MIXER_CLASS;
   1481 		dip->mixer_class = IW_OUTPUT_CLASS;
   1482 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1483 		strcpy(dip->label.name, AudioCoutputs);
   1484 		break;
   1485 	case IW_RECORD_CLASS:	/* record source class */
   1486 		dip->type = AUDIO_MIXER_CLASS;
   1487 		dip->mixer_class = IW_RECORD_CLASS;
   1488 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1489 		strcpy(dip->label.name, AudioCrecord);
   1490 		return 0;
   1491 	default:
   1492 		return ENXIO;
   1493 	}
   1494 	return 0;
   1495 }
   1496 
   1497 
   1498 void *
   1499 iw_malloc(void *addr, int direction, size_t size)
   1500 {
   1501 	struct iw_softc *sc;
   1502 	int drq;
   1503 
   1504 	sc = addr;
   1505 	if (direction == AUMODE_PLAY)
   1506 		drq = sc->sc_playdrq;
   1507 	else
   1508 		drq = sc->sc_recdrq;
   1509 	return isa_malloc(sc->sc_ic, drq, size, M_DEVBUF, M_WAITOK);
   1510 }
   1511 
   1512 void
   1513 iw_free(void *addr, void *ptr, size_t size)
   1514 {
   1515 
   1516 	isa_free(ptr, M_DEVBUF);
   1517 }
   1518 
   1519 size_t
   1520 iw_round_buffersize(void *addr, int direction, size_t size)
   1521 {
   1522 	struct iw_softc *sc;
   1523 	bus_size_t maxsize;
   1524 
   1525 	sc = addr;
   1526 	if (direction == AUMODE_PLAY)
   1527 		maxsize = sc->sc_play_maxsize;
   1528 	else
   1529 		maxsize = sc->sc_rec_maxsize;
   1530 
   1531 	if (size > maxsize)
   1532 		size = maxsize;
   1533 	return size;
   1534 }
   1535 
   1536 paddr_t
   1537 iw_mappage(void *addr, void *mem, off_t off, int prot)
   1538 {
   1539 
   1540 	return isa_mappage(mem, off, prot);
   1541 }
   1542 
   1543 int
   1544 iw_get_props(void *addr)
   1545 {
   1546 	struct iw_softc *sc;
   1547 
   1548 	sc = addr;
   1549 	return AUDIO_PROP_MMAP |
   1550 		(sc->sc_fullduplex ? AUDIO_PROP_FULLDUPLEX : 0);
   1551 }
   1552 
   1553 void
   1554 iw_get_locks(void *addr, kmutex_t **intr, kmutex_t **thread)
   1555 {
   1556 	struct iw_softc *sc;
   1557 
   1558 	sc = addr;
   1559 	*intr = &sc->sc_intr_lock;
   1560 	*thread = &sc->sc_lock;
   1561 }
   1562