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interwave.c revision 1.41
      1 /*	$NetBSD: interwave.c,v 1.41 2019/05/08 13:40:18 isaki 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 1.41 2019/05/08 13:40:18 isaki 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/audio_if.h>
     52 
     53 #include <dev/isa/isavar.h>
     54 #include <dev/isa/isadmavar.h>
     55 
     56 #include <dev/ic/interwavereg.h>
     57 #include <dev/ic/interwavevar.h>
     58 
     59 
     60 static void iwreset(struct iw_softc *, int);
     61 
     62 static int iw_set_speed(struct iw_softc *, u_long, char);
     63 static u_long iw_set_format(struct iw_softc *, u_long, int);
     64 static void iw_mixer_line_level(struct iw_softc *, int, int, int);
     65 static void iw_trigger_dma(struct iw_softc *, u_char);
     66 static void iw_stop_dma(struct iw_softc *, u_char, u_char);
     67 static void iw_dma_count(struct iw_softc *, u_short, int);
     68 static int iwintr(void *);
     69 static void iw_meminit(struct iw_softc *);
     70 static void iw_mempoke(struct iw_softc *, u_long, u_char);
     71 static u_char iw_mempeek(struct iw_softc *, u_long);
     72 
     73 #ifdef USE_WAVETABLE
     74 static void iw_set_voice_place(struct iw_softc *, u_char, u_long);
     75 static void iw_voice_pan(struct iw_softc *, u_char, u_short, u_short);
     76 static void iw_voice_freq(struct iw_softc *, u_char, u_long);
     77 static void iw_set_loopmode(struct iw_softc *, u_char, u_char, u_char);
     78 static void iw_set_voice_pos(struct iw_softc *, u_short, u_long, u_long);
     79 static void iw_start_voice(struct iw_softc *, u_char);
     80 static void iw_play_voice(struct iw_softc *, u_long, u_long, u_short);
     81 static void iw_stop_voice(struct iw_softc *, u_char);
     82 static void iw_move_voice_end(struct iw_softc *, u_short, u_long);
     83 static void iw_initvoices(struct iw_softc *);
     84 #endif
     85 
     86 struct audio_device iw_device = {
     87 	"Am78C201",
     88 	"0.1",
     89 	"guspnp"
     90 };
     91 
     92 /* The HW supports more formats but only SLINEAR_NE/16/2ch is enough. */
     93 static const struct audio_format iw_formats[] = {
     94 	{
     95 		.mode		= AUMODE_PLAY | AUMODE_RECORD,
     96 		.encoding	= AUDIO_ENCODING_SLINEAR_NE,
     97 		.validbits	= 16,
     98 		.precision	= 16,
     99 		.channels	= 2,
    100 		.channel_mask	= AUFMT_STEREO,
    101 		.frequency_type	= 16,
    102 		.frequency	= {
    103 			 5510,  6620,  8000,  9600, 11025,
    104 			16000, 18900, 22050, 27420, 32000,
    105 			33075, 37800, 38400, 44100, 44800, 48000,
    106 		},
    107 	},
    108 };
    109 #define IW_NFORMATS __arraycount(iw_formats)
    110 
    111 #ifdef AUDIO_DEBUG
    112 int iw_debug;
    113 #define DPRINTF(p)       if (iw_debug) printf p
    114 #else
    115 #define DPRINTF(p)
    116 #endif
    117 
    118 static int      iw_cc = 1;
    119 #ifdef DIAGNOSTIC
    120 static int      outputs = 0;
    121 static int      iw_ints = 0;
    122 static int      inputs = 0;
    123 static int      iw_inints = 0;
    124 #endif
    125 
    126 int
    127 iwintr(void *arg)
    128 {
    129 	struct	iw_softc *sc;
    130 	int	val;
    131 	u_char	intrs;
    132 
    133 	sc = arg;
    134 	val = 0;
    135 	intrs = 0;
    136 
    137 	mutex_spin_enter(&sc->sc_intr_lock);
    138 
    139 	IW_READ_DIRECT_1(6, sc->p2xr_h, intrs);	/* UISR */
    140 
    141 	/* codec ints */
    142 
    143 	/*
    144 	 * The proper order to do this seems to be to read CSR3 to get the
    145 	 * int cause and fifo over underrrun status, then deal with the ints
    146 	 * (new DMA set up), and to clear ints by writing the respective bit
    147 	 * to 0.
    148 	 */
    149 
    150 	/* read what ints happened */
    151 
    152 	IW_READ_CODEC_1(CSR3I, intrs);
    153 
    154 	/* clear them */
    155 
    156 	IW_WRITE_DIRECT_1(2, sc->codec_index_h, 0x00);
    157 
    158 	/* and process them */
    159 
    160 	if (intrs & 0x20) {
    161 #ifdef DIAGNOSTIC
    162 		iw_inints++;
    163 #endif
    164 		if (sc->sc_recintr != 0)
    165 			sc->sc_recintr(sc->sc_recarg);
    166 		val = 1;
    167 	}
    168 	if (intrs & 0x10) {
    169 #ifdef DIAGNOSTIC
    170 		iw_ints++;
    171 #endif
    172 		if (sc->sc_playintr != 0)
    173 			sc->sc_playintr(sc->sc_playarg);
    174 		val = 1;
    175 	}
    176 
    177 	mutex_spin_exit(&sc->sc_intr_lock);
    178 
    179 	return val;
    180 }
    181 
    182 void
    183 iwattach(struct iw_softc *sc)
    184 {
    185 	int	got_irq;
    186 
    187 	DPRINTF(("iwattach sc %p\n", sc));
    188 	got_irq = 0;
    189 
    190 	sc->cdatap = 1;		/* relative offsets in region */
    191 	sc->csr1r = 2;
    192 	sc->cxdr = 3;		/* CPDR or CRDR */
    193 
    194 	sc->gmxr = 0;		/* sc->p3xr */
    195 	sc->gmxdr = 1;		/* GMTDR or GMRDR */
    196 	sc->svsr = 2;
    197 	sc->igidxr = 3;
    198 	sc->i16dp = 4;
    199 	sc->i8dp = 5;
    200 	sc->lmbdr = 7;
    201 
    202 	sc->rec_precision = sc->play_precision = 8;
    203 	sc->rec_channels = sc->play_channels = 1;
    204 	sc->rec_encoding = sc->play_encoding = AUDIO_ENCODING_ULAW;
    205 	sc->sc_irate = 8000;
    206 	sc->sc_orate = 8000;
    207 
    208 	sc->sc_fullduplex = 1;
    209 
    210 	sc->sc_dma_flags = 0;
    211 
    212 	mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE);
    213 	mutex_init(&sc->sc_intr_lock, MUTEX_DEFAULT, IPL_AUDIO);
    214 
    215 	aprint_naive("\n");
    216 	/*
    217 	 * We can only use a few selected irqs, see if we got one from pnp
    218 	 * code that suits us.
    219 	 */
    220 
    221 	if (sc->sc_irq > 0) {
    222 		sc->sc_ih = isa_intr_establish(sc->sc_p2xr_ic,
    223 		    sc->sc_irq, IST_EDGE, IPL_AUDIO, iwintr, sc);
    224 		got_irq = 1;
    225 	}
    226 	if (!got_irq) {
    227 		aprint_error("\niwattach: couldn't get a suitable irq\n");
    228 		mutex_destroy(&sc->sc_lock);
    229 		mutex_destroy(&sc->sc_intr_lock);
    230 		return;
    231 	}
    232 	aprint_normal("\n");
    233 	iwreset(sc, 0);
    234 	iw_set_format(sc, AUDIO_ENCODING_ULAW, 0);
    235 	iw_set_format(sc, AUDIO_ENCODING_ULAW, 1);
    236 	aprint_normal("%s: interwave version %s\n",
    237 	    device_xname(sc->sc_dev), iw_device.version);
    238 	audio_attach_mi(sc->iw_hw_if, sc, sc->sc_dev);
    239 }
    240 
    241 int
    242 iwopen(struct iw_softc *sc, int flags)
    243 {
    244 
    245 	DPRINTF(("iwopen: sc %p\n", sc));
    246 
    247 #ifdef DIAGNOSTIC
    248 	outputs = 0;
    249 	iw_ints = 0;
    250 	inputs = 0;
    251 	iw_inints = 0;
    252 #endif
    253 
    254 	iwreset(sc, 1);
    255 
    256 	return 0;
    257 }
    258 
    259 void
    260 iwclose(void *addr)
    261 {
    262 
    263 	DPRINTF(("iwclose sc %p\n", addr));
    264 #ifdef DIAGNOSTIC
    265 	DPRINTF(("iwclose: outputs %d ints %d inputs %d in_ints %d\n",
    266 		outputs, iw_ints, inputs, iw_inints));
    267 #endif
    268 }
    269 
    270 #define RAM_STEP	64*1024
    271 
    272 static void
    273 iw_mempoke(struct iw_softc *sc, u_long addy, u_char val)
    274 {
    275 
    276 	IW_WRITE_GENERAL_2(LMALI, (u_short) addy);
    277 	IW_WRITE_GENERAL_1(LMAHI, (u_char) (addy >> 16));
    278 
    279 	/* Write byte to LMBDR */
    280 	IW_WRITE_DIRECT_1(sc->p3xr + 7, sc->p3xr_h, val);
    281 }
    282 
    283 static u_char
    284 iw_mempeek(struct iw_softc *sc, u_long addy)
    285 {
    286 	u_char	ret;
    287 
    288 	IW_WRITE_GENERAL_2(LMALI, (u_short) addy);
    289 	IW_WRITE_GENERAL_1(LMAHI, (u_char) (addy >> 16));
    290 
    291 	IW_READ_DIRECT_1(sc->p3xr + 7, sc->p3xr_h, ret);
    292 	return ret;		/* return byte from LMBDR */
    293 }
    294 
    295 static void
    296 iw_meminit(struct iw_softc *sc)
    297 {
    298 	u_long	bank[4] = {0L, 0L, 0L, 0L};
    299 	u_long	addr, base, cnt;
    300 	u_char	i, ram /* ,memval=0 */ ;
    301 	u_short	lmcfi;
    302 	u_long	temppi;
    303 	u_long	*lpbanks;
    304 
    305 	addr = 0L;
    306 	base = 0L;
    307 	cnt = 0L;
    308 	ram = 0;
    309 	lpbanks = &temppi;
    310 
    311 	IW_WRITE_GENERAL_1(LDMACI, 0x00);
    312 
    313 	IW_READ_GENERAL_2(LMCFI, lmcfi);	/* 0x52 */
    314 	lmcfi |= 0x0A0C;
    315 	IW_WRITE_GENERAL_2(LMCFI, lmcfi);	/* max addr span */
    316 	IW_WRITE_GENERAL_1(LMCI, 0x00);
    317 
    318 	/* fifo addresses */
    319 
    320 	IW_WRITE_GENERAL_2(LMRFAI, ((4 * 1024 * 1024) >> 8));
    321 	IW_WRITE_GENERAL_2(LMPFAI, ((4 * 1024 * 1024 + 16 * 1024) >> 8));
    322 
    323 	IW_WRITE_GENERAL_2(LMFSI, 0x000);
    324 
    325 	IW_WRITE_GENERAL_2(LDICI, 0x0000);
    326 
    327 	while (addr < (16 * 1024 * 1024)) {
    328 		iw_mempoke(sc, addr, 0x00);
    329 		addr += RAM_STEP;
    330 	}
    331 
    332 	printf("%s:", device_xname(sc->sc_dev));
    333 
    334 	for (i = 0; i < 4; i++) {
    335 		iw_mempoke(sc, base, 0xAA);	/* mark start of bank */
    336 		iw_mempoke(sc, base + 1L, 0x55);
    337 		if (iw_mempeek(sc, base) == 0xAA  &&
    338 		    iw_mempeek(sc, base + 1L) == 0x55)
    339 			ram = 1;
    340 		if (ram) {
    341 			while (cnt < (4 * 1024 * 1024)) {
    342 				bank[i] += RAM_STEP;
    343 				cnt += RAM_STEP;
    344 				addr = base + cnt;
    345 				if (iw_mempeek(sc, addr) == 0xAA)
    346 					break;
    347 			}
    348 		}
    349 		if (lpbanks != NULL) {
    350 			*lpbanks = bank[i];
    351 			lpbanks++;
    352 		}
    353 		bank[i] = bank[i] >> 10;
    354 		printf("%s bank[%d]: %ldK", i ? "," : "", i, bank[i]);
    355 		base += 4 * 1024 * 1024;
    356 		cnt = 0L;
    357 		ram = 0;
    358 	}
    359 
    360 	printf("\n");
    361 
    362 	/*
    363 	 * this is not really useful since GUS PnP supports memory
    364 	 * configurations that aren't really supported by Interwave...beware
    365 	 * of holes! Also, we don't use the memory for anything in this
    366 	 * version of the driver.
    367 	 *
    368 	 * we've configured for 4M-4M-4M-4M
    369 	 */
    370 }
    371 
    372 static void
    373 iwreset(struct iw_softc *sc, int warm)
    374 {
    375 	u_char	reg, cmode, val, mixer_image;
    376 
    377 	val = 0;
    378 	mixer_image = 0;
    379 	reg = 0;		/* XXX gcc -Wall */
    380 
    381 	cmode = 0x6c;		/* enhanced codec mode (full duplex) */
    382 
    383 	/* reset */
    384 
    385 	IW_WRITE_GENERAL_1(URSTI, 0x00);
    386 	delay(10);
    387 	IW_WRITE_GENERAL_1(URSTI, 0x07);
    388 	IW_WRITE_GENERAL_1(ICMPTI, 0x1f);	/* disable DSP and uici and
    389 						 * udci writes */
    390 	IW_WRITE_GENERAL_1(IDECI, 0x7f);	/* enable ints to ISA and
    391 						 * codec access */
    392 	IW_READ_GENERAL_1(IVERI, reg);
    393 	IW_WRITE_GENERAL_1(IVERI, reg | 0x01);	/* hidden reg lock disable */
    394 	IW_WRITE_GENERAL_1(UASBCI, 0x00);
    395 
    396 	/* synth enhanced mode (default), 0 active voices, disable ints */
    397 
    398 	IW_WRITE_GENERAL_1(SGMI_WR, 0x01);	/* enhanced mode, LFOs
    399 						 * disabled */
    400 	for (val = 0; val < 32; val++) {
    401 		/* set each synth sound volume to 0 */
    402 		IW_WRITE_DIRECT_1(sc->p3xr + 2, sc->p3xr_h, val);
    403 		IW_WRITE_GENERAL_1(SVSI_WR, 0x00);
    404 		IW_WRITE_GENERAL_2(SASLI_WR, 0x0000);
    405 		IW_WRITE_GENERAL_2(SASHI_WR, 0x0000);
    406 		IW_WRITE_GENERAL_2(SAELI_WR, 0x0000);
    407 		IW_WRITE_GENERAL_2(SAEHI_WR, 0x0000);
    408 		IW_WRITE_GENERAL_2(SFCI_WR, 0x0000);
    409 		IW_WRITE_GENERAL_1(SACI_WR, 0x02);
    410 		IW_WRITE_GENERAL_1(SVSI_WR, 0x00);
    411 		IW_WRITE_GENERAL_1(SVEI_WR, 0x00);
    412 		IW_WRITE_GENERAL_2(SVLI_WR, 0x0000);
    413 		IW_WRITE_GENERAL_1(SVCI_WR, 0x02);
    414 		IW_WRITE_GENERAL_1(SMSI_WR, 0x02);
    415 	}
    416 
    417 	IW_WRITE_GENERAL_1(SAVI_WR, 0x00);
    418 
    419 	/* codec mode/init */
    420 
    421 	/* first change mode to 1 */
    422 
    423 	IW_WRITE_CODEC_1(CMODEI, 0x00);
    424 
    425 	/* and mode 3 */
    426 
    427 	IW_WRITE_CODEC_1(CMODEI, cmode);
    428 
    429 	IW_READ_CODEC_1(CMODEI, reg);
    430 
    431 	DPRINTF(("cmode %x\n", reg));
    432 
    433 	sc->revision = ((reg & 0x80) >> 3) | (reg & 0x0f);
    434 
    435 	IW_WRITE_DIRECT_1(sc->codec_index + 2, sc->p2xr_h, 0x00);
    436 
    437 	IW_WRITE_CODEC_1(CFIG1I | IW_MCE, 0x00);	/* DMA 2 chan access */
    438 	IW_WRITE_CODEC_1(CEXTI, 0x00);	/* disable ints for now */
    439 
    440 
    441 	IW_WRITE_CODEC_1(CLPCTI, 0x00);	/* reset playback sample counters */
    442 	IW_WRITE_CODEC_1(CUPCTI, 0x00);	/* always upper byte last */
    443 	IW_WRITE_CODEC_1(CFIG2I, 0x80);	/* full voltage range, enable record
    444 					 * and playback sample counters, and
    445 					 * don't center output in case or
    446 					 * FIFO underrun */
    447 	IW_WRITE_CODEC_1(CFIG3I, 0xc0);	/* enable record/playback irq (still
    448 					 * turned off from CEXTI), max DMA
    449 					 * rate */
    450 	IW_WRITE_CODEC_1(CSR3I, 0x00);	/* clear status 3 reg */
    451 
    452 
    453 	IW_WRITE_CODEC_1(CLRCTI, 0x00);	/* reset record sample counters */
    454 	IW_WRITE_CODEC_1(CURCTI, 0x00);	/* always upper byte last */
    455 
    456 
    457 	IW_READ_GENERAL_1(IVERI, reg);
    458 
    459 	sc->vers = reg >> 4;
    460 	if (!warm)
    461 		snprintf(iw_device.version, sizeof(iw_device.version), "%d.%d",
    462 		    sc->vers, sc->revision);
    463 
    464 	IW_WRITE_GENERAL_1(IDECI, 0x7f);	/* irqs and codec decode
    465 						 * enable */
    466 
    467 
    468 	/* ports */
    469 
    470 	if (!warm) {
    471 		iw_mixer_line_level(sc, IW_LINE_OUT, 255, 255);
    472 		iw_mixer_line_level(sc, IW_LINE_IN, 0, 0);
    473 		iw_mixer_line_level(sc, IW_AUX1, 0, 0);
    474 		iw_mixer_line_level(sc, IW_AUX2, 200, 200); /* CD */
    475 		sc->sc_dac.off = 0;
    476 		iw_mixer_line_level(sc, IW_DAC, 200, 200);
    477 
    478 		iw_mixer_line_level(sc, IW_MIC_IN, 0, 0);
    479 		iw_mixer_line_level(sc, IW_REC, 0, 0);
    480 		iw_mixer_line_level(sc, IW_LOOPBACK, 0, 0);
    481 		iw_mixer_line_level(sc, IW_MONO_IN, 0, 0);
    482 
    483 		/* mem stuff */
    484 		iw_meminit(sc);
    485 
    486 	}
    487 	IW_WRITE_CODEC_1(CEXTI, 0x02);	/* codec int enable */
    488 
    489 	/* clear _LDMACI */
    490 
    491 	IW_WRITE_GENERAL_1(LDMACI, 0x00);
    492 
    493 	/* enable mixer paths */
    494 	mixer_image = 0x0c;
    495 	IW_WRITE_DIRECT_1(sc->p2xr, sc->p2xr_h, mixer_image);
    496 	/*
    497 	 * enable output, line in. disable mic in bit 0 = 0 -> line in on
    498 	 * (from codec?) bit 1 = 0 -> output on bit 2 = 1 -> mic in on bit 3
    499 	 * = 1 -> irq&drq pin enable bit 4 = 1 -> channel interrupts to chan
    500 	 * 1 bit 5 = 1 -> enable midi loop back bit 6 = 0 -> irq latches
    501 	 * URCR[2:0] bit 6 = 1 -> DMA latches URCR[2:0]
    502 	 */
    503 
    504 
    505 	IW_READ_DIRECT_1(sc->p2xr, sc->p2xr_h, mixer_image);
    506 #ifdef AUDIO_DEBUG
    507 	if (!warm)
    508 		DPRINTF(("mix image %x \n", mixer_image));
    509 #endif
    510 }
    511 
    512 struct iw_codec_freq {
    513 	u_long	freq;
    514 	u_char	bits;
    515 };
    516 
    517 int
    518 iw_set_speed(struct iw_softc *sc, u_long freq, char in)
    519 {
    520 	u_char	var, cfig3, reg;
    521 
    522 	static struct iw_codec_freq iw_cf[17] = {
    523 #define FREQ_1 24576000
    524 #define FREQ_2 16934400
    525 #define XTAL1 0
    526 #define XTAL2 1
    527 		{5510, 0x00 | XTAL2}, {6620, 0x0E | XTAL2},
    528 		{8000, 0x00 | XTAL1}, {9600, 0x0E | XTAL1},
    529 		{11025, 0x02 | XTAL2}, {16000, 0x02 | XTAL1},
    530 		{18900, 0x04 | XTAL2}, {22050, 0x06 | XTAL2},
    531 		{27420, 0x04 | XTAL1}, {32000, 0x06 | XTAL1},
    532 		{33075, 0x0C | XTAL2}, {37800, 0x08 | XTAL2},
    533 		{38400, 0x0A | XTAL1}, {44100, 0x0A | XTAL2},
    534 		{44800, 0x08 | XTAL1}, {48000, 0x0C | XTAL1},
    535 		{48000, 0x0C | XTAL1}	/* really a dummy for indexing later */
    536 #undef XTAL1
    537 #undef XTAL2
    538 	};
    539 
    540 	cfig3 = 0;		/* XXX gcc -Wall */
    541 
    542 	/*
    543 	 * if the frequency is between 3493 Hz and 32 kHz we can use a more
    544 	 * accurate frequency than the ones listed above base on the formula
    545 	 * FREQ/((16*(48+x))) where FREQ is either FREQ_1 (24576000Hz) or
    546 	 * FREQ_2 (16934400Hz) and x is the value to be written to either
    547 	 * CPVFI or CRVFI. To enable this option, bit 2 in CFIG3 needs to be
    548 	 * set high
    549 	 *
    550 	 * NOT IMPLEMENTED!
    551 	 *
    552 	 * Note that if you have a 'bad' XTAL_1 (higher than 18.5 MHz), 44.8 kHz
    553 	 * and 38.4 kHz modes will provide wrong frequencies to output.
    554 	 */
    555 
    556 
    557 	if (freq > 48000)
    558 		freq = 48000;
    559 	if (freq < 5510)
    560 		freq = 5510;
    561 
    562 	/* reset CFIG3[2] */
    563 
    564 	IW_READ_CODEC_1(CFIG3I, cfig3);
    565 
    566 	cfig3 |= 0xc0;		/* not full fifo treshhold */
    567 
    568 	DPRINTF(("cfig3i = %x -> ", cfig3));
    569 
    570 	cfig3 &= ~0x04;
    571 	IW_WRITE_CODEC_1(CFIG3I, cfig3);
    572 	IW_READ_CODEC_1(CFIG3I, cfig3);
    573 
    574 	DPRINTF(("%x\n", cfig3));
    575 
    576 	for (var = 0; var < 16; var++)	/* select closest frequency */
    577 		if (freq <= iw_cf[var].freq)
    578 			break;
    579 	if (var != 16)
    580 		if (abs(freq - iw_cf[var].freq) > abs(iw_cf[var + 1].freq - freq))
    581 			var++;
    582 
    583 	if (in)
    584 		IW_WRITE_CODEC_1(CRDFI | IW_MCE, sc->recfmtbits | iw_cf[var].bits);
    585 	else
    586 		IW_WRITE_CODEC_1(CPDFI | IW_MCE, sc->playfmtbits | iw_cf[var].bits);
    587 	freq = iw_cf[var].freq;
    588 	DPRINTF(("setting %s frequency to %d bits %x \n",
    589 	       in ? "in" : "out", (int) freq, iw_cf[var].bits));
    590 
    591 	IW_READ_CODEC_1(CPDFI, reg);
    592 
    593 	DPRINTF((" CPDFI %x ", reg));
    594 
    595 	IW_READ_CODEC_1(CRDFI, reg);
    596 
    597 	DPRINTF((" CRDFI %x ", reg));
    598 	__USE(reg);
    599 
    600 	return freq;
    601 }
    602 
    603 int
    604 iw_query_format(void *addr, audio_format_query_t *afp)
    605 {
    606 
    607 	return audio_query_format(iw_formats, IW_NFORMATS, afp);
    608 }
    609 
    610 static u_long
    611 iw_set_format(struct iw_softc *sc, u_long precision, int in)
    612 {
    613 	u_char	data;
    614 	int	encoding, channels;
    615 
    616 	encoding = in ? sc->rec_encoding : sc->play_encoding;
    617 	channels = in ? sc->rec_channels : sc->play_channels;
    618 
    619 	DPRINTF(("iw_set_format\n"));
    620 
    621 	switch (encoding) {
    622 	case AUDIO_ENCODING_ULAW:
    623 		data = 0x00;
    624 		break;
    625 
    626 	case AUDIO_ENCODING_ALAW:
    627 		data = 0x00;
    628 		break;
    629 
    630 	case AUDIO_ENCODING_SLINEAR_LE:
    631 		if (precision == 16)
    632 			data = 0x40;	/* little endian. 0xc0 is big endian */
    633 		else
    634 			data = 0x00;
    635 		break;
    636 
    637 	case AUDIO_ENCODING_SLINEAR_BE:
    638 		if (precision == 16)
    639 			data = 0xc0;
    640 		else
    641 			data = 0x00;
    642 		break;
    643 
    644 	case AUDIO_ENCODING_ADPCM:
    645 		data = 0xa0;
    646 		break;
    647 
    648 	default:
    649 		return -1;
    650 	}
    651 
    652 	if (channels == 2)
    653 		data |= 0x10;	/* stereo */
    654 
    655 	if (in) {
    656 		/* in */
    657 		sc->recfmtbits = data;
    658 		/* This will zero the normal codec frequency,
    659 		 * iw_set_speed should always be called afterwards.
    660 		 */
    661 		IW_WRITE_CODEC_1(CRDFI | IW_MCE, data);
    662 	} else {
    663 		/* out */
    664 		sc->playfmtbits = data;
    665 		IW_WRITE_CODEC_1(CPDFI | IW_MCE, data);
    666 	}
    667 
    668 	DPRINTF(("formatbits %s %x", in ? "in" : "out", data));
    669 
    670 	return encoding;
    671 }
    672 
    673 int
    674 iw_audio_set_format(void *addr, int setmode,
    675 	const audio_params_t *p, const audio_params_t *q,
    676 	audio_filter_reg_t *pfil, audio_filter_reg_t *rfil)
    677 {
    678 	struct iw_softc *sc;
    679 
    680 	DPRINTF(("%s: code %u, prec %u, rate %u, chan %u\n", __func__,
    681 	    p->encoding, p->precision, p->sample_rate, p->channels));
    682 	sc = addr;
    683 
    684 	if (setmode & AUMODE_PLAY) {
    685 		sc->play_channels = p->channels;
    686 		sc->play_encoding = p->encoding;
    687 		sc->play_precision = p->precision;
    688 		iw_set_format(sc, p->precision, 0);
    689 		sc->sc_orate = iw_set_speed(sc, p->sample_rate, 0);
    690 	} else {
    691 		sc->rec_channels = q->channels;
    692 		sc->rec_encoding = q->encoding;
    693 		sc->rec_precision = q->precision;
    694 		/* XXX Is this 'p' a typo of 'q' ? */
    695 		iw_set_format(sc, p->precision, 1);
    696 		sc->sc_irate = iw_set_speed(sc, q->sample_rate, 1);
    697 	}
    698 	return 0;
    699 }
    700 
    701 int
    702 iw_round_blocksize(void *addr, int blk, int mode,
    703     const audio_params_t *param)
    704 {
    705 
    706 	/* Round to a multiple of the biggest sample size. */
    707 	return blk & -4;
    708 }
    709 
    710 void
    711 iw_mixer_line_level(struct iw_softc *sc, int line, int levl, int levr)
    712 {
    713 	u_char	gainl, gainr, attenl, attenr;
    714 
    715 	switch (line) {
    716 	case IW_REC:
    717 		gainl = sc->sc_recsrcbits | (levl >> 4);
    718 		gainr = sc->sc_recsrcbits | (levr >> 4);
    719 		DPRINTF(("recording with %x", gainl));
    720 		IW_WRITE_CODEC_1(CLICI, gainl);
    721 		IW_WRITE_CODEC_1(CRICI, gainr);
    722 		sc->sc_rec.voll = levl & 0xf0;
    723 		sc->sc_rec.volr = levr & 0xf0;
    724 		break;
    725 
    726 	case IW_AUX1:
    727 
    728 		gainl = (255 - levl) >> 3;
    729 		gainr = (255 - levr) >> 3;
    730 
    731 		/* mute if 0 level */
    732 		if (levl == 0)
    733 			gainl |= 0x80;
    734 		if (levr == 0)
    735 			gainr |= 0x80;
    736 
    737 		IW_WRITE_CODEC_1(IW_LEFT_AUX1_PORT, gainl);
    738 		IW_WRITE_CODEC_1(IW_RIGHT_AUX1_PORT, gainr);
    739 		sc->sc_aux1.voll = levl & 0xf8;
    740 		sc->sc_aux1.volr = levr & 0xf8;
    741 
    742 		break;
    743 
    744 	case IW_AUX2:
    745 
    746 		gainl = (255 - levl) >> 3;
    747 		gainr = (255 - levr) >> 3;
    748 
    749 		/* mute if 0 level */
    750 		if (levl == 0)
    751 			gainl |= 0x80;
    752 		if (levr == 0)
    753 			gainr |= 0x80;
    754 
    755 		IW_WRITE_CODEC_1(IW_LEFT_AUX2_PORT, gainl);
    756 		IW_WRITE_CODEC_1(IW_RIGHT_AUX2_PORT, gainr);
    757 		sc->sc_aux2.voll = levl & 0xf8;
    758 		sc->sc_aux2.volr = levr & 0xf8;
    759 		break;
    760 	case IW_DAC:
    761 		attenl = ((255 - levl) >> 2) | ((levl && !sc->sc_dac.off) ? 0 : 0x80);
    762 		attenr = ((255 - levr) >> 2) | ((levr && !sc->sc_dac.off) ? 0 : 0x80);
    763 		IW_WRITE_CODEC_1(CLDACI, attenl);
    764 		IW_WRITE_CODEC_1(CRDACI, attenr);
    765 		sc->sc_dac.voll = levl & 0xfc;
    766 		sc->sc_dac.volr = levr & 0xfc;
    767 		break;
    768 	case IW_LOOPBACK:
    769 		attenl = ((255 - levl) & 0xfc) | (levl ? 0x01 : 0);
    770 		IW_WRITE_CODEC_1(CLCI, attenl);
    771 		sc->sc_loopback.voll = levl & 0xfc;
    772 		break;
    773 	case IW_LINE_IN:
    774 		gainl = (levl >> 3) | (levl ? 0 : 0x80);
    775 		gainr = (levr >> 3) | (levr ? 0 : 0x80);
    776 		IW_WRITE_CODEC_1(CLLICI, gainl);
    777 		IW_WRITE_CODEC_1(CRLICI, gainr);
    778 		sc->sc_linein.voll = levl & 0xf8;
    779 		sc->sc_linein.volr = levr & 0xf8;
    780 		break;
    781 	case IW_MIC_IN:
    782 		gainl = ((255 - levl) >> 3) | (levl ? 0 : 0x80);
    783 		gainr = ((255 - levr) >> 3) | (levr ? 0 : 0x80);
    784 		IW_WRITE_CODEC_1(CLMICI, gainl);
    785 		IW_WRITE_CODEC_1(CRMICI, gainr);
    786 		sc->sc_mic.voll = levl & 0xf8;
    787 		sc->sc_mic.volr = levr & 0xf8;
    788 		break;
    789 	case IW_LINE_OUT:
    790 		attenl = ((255 - levl) >> 3) | (levl ? 0 : 0x80);
    791 		attenr = ((255 - levr) >> 3) | (levr ? 0 : 0x80);
    792 		IW_WRITE_CODEC_1(CLOAI, attenl);
    793 		IW_WRITE_CODEC_1(CROAI, attenr);
    794 		sc->sc_lineout.voll = levl & 0xf8;
    795 		sc->sc_lineout.volr = levr & 0xf8;
    796 		break;
    797 	case IW_MONO_IN:
    798 		attenl = ((255 - levl) >> 4) | (levl ? 0 : 0xc0);	/* in/out mute */
    799 		IW_WRITE_CODEC_1(CMONOI, attenl);
    800 		sc->sc_monoin.voll = levl & 0xf0;
    801 		break;
    802 	}
    803 }
    804 
    805 int
    806 iw_commit_settings(void *addr)
    807 {
    808 
    809 	return 0;
    810 }
    811 
    812 void
    813 iw_trigger_dma(struct iw_softc *sc, u_char io)
    814 {
    815 	u_char	reg;
    816 
    817 	IW_READ_CODEC_1(CSR3I, reg);
    818 	IW_WRITE_CODEC_1(CSR3I, reg & ~(io == IW_DMA_PLAYBACK ? 0x10 : 0x20));
    819 
    820 	IW_READ_CODEC_1(CFIG1I, reg);
    821 
    822 	IW_WRITE_CODEC_1(CFIG1I, reg | io);
    823 
    824 	/* let the counter run */
    825 	IW_READ_CODEC_1(CFIG2I, reg);
    826 	IW_WRITE_CODEC_1(CFIG2I, reg & ~(io << 4));
    827 }
    828 
    829 void
    830 iw_stop_dma(struct iw_softc *sc, u_char io, u_char hard)
    831 {
    832 	u_char	reg;
    833 
    834 	/* just stop the counter, no need to flush the fifo */
    835 	IW_READ_CODEC_1(CFIG2I, reg);
    836 	IW_WRITE_CODEC_1(CFIG2I, (reg | (io << 4)));
    837 
    838 	if (hard) {
    839 		/* unless we're closing the device */
    840 		IW_READ_CODEC_1(CFIG1I, reg);
    841 		IW_WRITE_CODEC_1(CFIG1I, reg & ~io);
    842 	}
    843 }
    844 
    845 void
    846 iw_dma_count(struct iw_softc *sc, u_short count, int io)
    847 {
    848 
    849 	if (io == IW_DMA_PLAYBACK) {
    850 		IW_WRITE_CODEC_1(CLPCTI, (u_char) (count & 0x00ff));
    851 		IW_WRITE_CODEC_1(CUPCTI, (u_char) ((count >> 8) & 0x00ff));
    852 	} else {
    853 		IW_WRITE_CODEC_1(CLRCTI, (u_char) (count & 0x00ff));
    854 		IW_WRITE_CODEC_1(CURCTI, (u_char) ((count >> 8) & 0x00ff));
    855 	}
    856 }
    857 
    858 int
    859 iw_init_output(void *addr, void *sbuf, int cc)
    860 {
    861 	struct iw_softc *sc = (struct iw_softc *) addr;
    862 
    863 	DPRINTF(("iw_init_output\n"));
    864 
    865 	isa_dmastart(sc->sc_ic, sc->sc_playdrq, sbuf,
    866 		     cc, NULL, DMAMODE_WRITE | DMAMODE_LOOP, BUS_DMA_NOWAIT);
    867 	return 0;
    868 }
    869 
    870 int
    871 iw_init_input(void *addr, void *sbuf, int cc)
    872 {
    873 	struct	iw_softc *sc;
    874 
    875 	DPRINTF(("iw_init_input\n"));
    876 	sc = (struct iw_softc *) addr;
    877 	isa_dmastart(sc->sc_ic, sc->sc_recdrq, sbuf,
    878 		     cc, NULL, DMAMODE_READ | DMAMODE_LOOP, BUS_DMA_NOWAIT);
    879 	return 0;
    880 }
    881 
    882 
    883 int
    884 iw_start_output(void *addr, void *p, int cc, void (*intr)(void *), void *arg)
    885 {
    886 	struct	iw_softc *sc;
    887 
    888 #ifdef DIAGNOSTIC
    889 	if (!intr) {
    890 		printf("iw_start_output: no callback!\n");
    891 		return 1;
    892 	}
    893 #endif
    894 	sc = addr;
    895 	sc->sc_playintr = intr;
    896 	sc->sc_playarg = arg;
    897 	sc->sc_dma_flags |= DMAMODE_WRITE;
    898 	sc->sc_playdma_bp = p;
    899 
    900 	isa_dmastart(sc->sc_ic, sc->sc_playdrq, sc->sc_playdma_bp,
    901 	    cc, NULL, DMAMODE_WRITE, BUS_DMA_NOWAIT);
    902 
    903 
    904 	if (sc->play_encoding == AUDIO_ENCODING_ADPCM)
    905 		cc >>= 2;
    906 	if (sc->play_precision == 16)
    907 		cc >>= 1;
    908 
    909 	if (sc->play_channels == 2 && sc->play_encoding != AUDIO_ENCODING_ADPCM)
    910 		cc >>= 1;
    911 
    912 	cc -= iw_cc;
    913 
    914 	/* iw_dma_access(sc,1); */
    915 	if (cc != sc->sc_playdma_cnt) {
    916 		iw_dma_count(sc, (u_short) cc, IW_DMA_PLAYBACK);
    917 		sc->sc_playdma_cnt = cc;
    918 
    919 		iw_trigger_dma(sc, IW_DMA_PLAYBACK);
    920 	}
    921 
    922 #ifdef DIAGNOSTIC
    923 	if (outputs != iw_ints)
    924 		printf("iw_start_output: out %d, int %d\n", outputs, iw_ints);
    925 	outputs++;
    926 #endif
    927 
    928 	return 0;
    929 }
    930 
    931 
    932 int
    933 iw_start_input(void *addr, void *p, int cc, void (*intr)(void *), void *arg)
    934 {
    935 	struct	iw_softc *sc;
    936 
    937 #ifdef DIAGNOSTIC
    938 	if (!intr) {
    939 		printf("iw_start_input: no callback!\n");
    940 		return 1;
    941 	}
    942 #endif
    943 	sc = addr;
    944 	sc->sc_recintr = intr;
    945 	sc->sc_recarg = arg;
    946 	sc->sc_dma_flags |= DMAMODE_READ;
    947 	sc->sc_recdma_bp = p;
    948 
    949 	isa_dmastart(sc->sc_ic, sc->sc_recdrq, sc->sc_recdma_bp,
    950 	    cc, NULL, DMAMODE_READ, BUS_DMA_NOWAIT);
    951 
    952 
    953 	if (sc->rec_encoding == AUDIO_ENCODING_ADPCM)
    954 		cc >>= 2;
    955 	if (sc->rec_precision == 16)
    956 		cc >>= 1;
    957 
    958 	if (sc->rec_channels == 2 && sc->rec_encoding != AUDIO_ENCODING_ADPCM)
    959 		cc >>= 1;
    960 
    961 	cc -= iw_cc;
    962 
    963 	/* iw_dma_access(sc,0); */
    964 	if (sc->sc_recdma_cnt != cc) {
    965 		iw_dma_count(sc, (u_short) cc, IW_DMA_RECORD);
    966 		sc->sc_recdma_cnt = cc;
    967 		/* iw_dma_ctrl(sc, IW_DMA_RECORD); */
    968 		iw_trigger_dma(sc, IW_DMA_RECORD);
    969 	}
    970 
    971 #ifdef DIAGNOSTIC
    972 	if ((inputs != iw_inints))
    973 		printf("iw_start_input: in %d, inints %d\n", inputs, iw_inints);
    974 	inputs++;
    975 #endif
    976 
    977 	return 0;
    978 }
    979 
    980 
    981 int
    982 iw_halt_output(void *addr)
    983 {
    984 	struct	iw_softc *sc;
    985 
    986 	sc = addr;
    987 	iw_stop_dma(sc, IW_DMA_PLAYBACK, 0);
    988 	return 0;
    989 }
    990 
    991 
    992 int
    993 iw_halt_input(void *addr)
    994 {
    995 	struct	iw_softc *sc;
    996 
    997 	sc = addr;
    998 	iw_stop_dma(sc, IW_DMA_RECORD, 0);
    999 	return 0;
   1000 }
   1001 
   1002 int
   1003 iw_speaker_ctl(void *addr, int newstate)
   1004 {
   1005 	struct iw_softc *sc;
   1006 	u_char reg;
   1007 
   1008 	sc = addr;
   1009 	if (newstate == SPKR_ON) {
   1010 		sc->sc_dac.off = 0;
   1011 		IW_READ_CODEC_1(CLDACI, reg);
   1012 		IW_WRITE_CODEC_1(CLDACI, reg & 0x7f);
   1013 		IW_READ_CODEC_1(CRDACI, reg);
   1014 		IW_WRITE_CODEC_1(CRDACI, reg & 0x7f);
   1015 	} else {
   1016 		/* SPKR_OFF */
   1017 		sc->sc_dac.off = 1;
   1018 		IW_READ_CODEC_1(CLDACI, reg);
   1019 		IW_WRITE_CODEC_1(CLDACI, reg | 0x80);
   1020 		IW_READ_CODEC_1(CRDACI, reg);
   1021 		IW_WRITE_CODEC_1(CRDACI, reg | 0x80);
   1022 	}
   1023 	return 0;
   1024 }
   1025 
   1026 int
   1027 iw_getdev(void *addr, struct audio_device *retp)
   1028 {
   1029 
   1030 	*retp = iw_device;
   1031 	return 0;
   1032 }
   1033 
   1034 /* Mixer (in/out ports) */
   1035 int
   1036 iw_set_port(void *addr, mixer_ctrl_t *cp)
   1037 {
   1038 	struct iw_softc *sc;
   1039 	u_char vall, valr;
   1040 	int error;
   1041 
   1042 	sc = addr;
   1043 	vall = 0;
   1044 	valr = 0;
   1045 	error = EINVAL;
   1046 	switch (cp->dev) {
   1047 	case IW_MIC_IN_LVL:
   1048 		if (cp->type == AUDIO_MIXER_VALUE) {
   1049 			error = 0;
   1050 			if (cp->un.value.num_channels == 1) {
   1051 				vall = valr = cp->un.value.level[0];
   1052 			} else {
   1053 				vall = cp->un.value.level[0];
   1054 				valr = cp->un.value.level[1];
   1055 			}
   1056 			sc->sc_mic.voll = vall;
   1057 			sc->sc_mic.volr = valr;
   1058 			iw_mixer_line_level(sc, IW_MIC_IN, vall, valr);
   1059 		}
   1060 		break;
   1061 	case IW_AUX1_LVL:
   1062 		if (cp->type == AUDIO_MIXER_VALUE) {
   1063 			error = 0;
   1064 			if (cp->un.value.num_channels == 1) {
   1065 				vall = valr = cp->un.value.level[0];
   1066 			} else {
   1067 				vall = cp->un.value.level[0];
   1068 				valr = cp->un.value.level[1];
   1069 			}
   1070 			sc->sc_aux1.voll = vall;
   1071 			sc->sc_aux1.volr = valr;
   1072 			iw_mixer_line_level(sc, IW_AUX1, vall, valr);
   1073 		}
   1074 		break;
   1075 	case IW_AUX2_LVL:
   1076 		if (cp->type == AUDIO_MIXER_VALUE) {
   1077 			error = 0;
   1078 			if (cp->un.value.num_channels == 1) {
   1079 				vall = valr = cp->un.value.level[0];
   1080 			} else {
   1081 				vall = cp->un.value.level[0];
   1082 				valr = cp->un.value.level[1];
   1083 			}
   1084 			sc->sc_aux2.voll = vall;
   1085 			sc->sc_aux2.volr = valr;
   1086 			iw_mixer_line_level(sc, IW_AUX2, vall, valr);
   1087 		}
   1088 		break;
   1089 	case IW_LINE_IN_LVL:
   1090 		if (cp->type == AUDIO_MIXER_VALUE) {
   1091 			error = 0;
   1092 			if (cp->un.value.num_channels == 1) {
   1093 				vall = valr = cp->un.value.level[0];
   1094 			} else {
   1095 				vall = cp->un.value.level[0];
   1096 				valr = cp->un.value.level[1];
   1097 			}
   1098 			sc->sc_linein.voll = vall;
   1099 			sc->sc_linein.volr = valr;
   1100 			iw_mixer_line_level(sc, IW_LINE_IN, vall, valr);
   1101 		}
   1102 		break;
   1103 	case IW_LINE_OUT_LVL:
   1104 		if (cp->type == AUDIO_MIXER_VALUE) {
   1105 			error = 0;
   1106 			if (cp->un.value.num_channels == 1) {
   1107 				vall = valr = cp->un.value.level[0];
   1108 			} else {
   1109 				vall = cp->un.value.level[0];
   1110 				valr = cp->un.value.level[1];
   1111 			}
   1112 			sc->sc_lineout.voll = vall;
   1113 			sc->sc_lineout.volr = valr;
   1114 			iw_mixer_line_level(sc, IW_LINE_OUT, vall, valr);
   1115 		}
   1116 		break;
   1117 	case IW_REC_LVL:
   1118 		if (cp->type == AUDIO_MIXER_VALUE) {
   1119 			error = 0;
   1120 			if (cp->un.value.num_channels == 1) {
   1121 				vall = valr = cp->un.value.level[0];
   1122 			} else {
   1123 				vall = cp->un.value.level[0];
   1124 				valr = cp->un.value.level[1];
   1125 			}
   1126 			sc->sc_rec.voll = vall;
   1127 			sc->sc_rec.volr = valr;
   1128 			iw_mixer_line_level(sc, IW_REC, vall, valr);
   1129 		}
   1130 		break;
   1131 
   1132 	case IW_DAC_LVL:
   1133 		if (cp->type == AUDIO_MIXER_VALUE) {
   1134 			error = 0;
   1135 			if (cp->un.value.num_channels == 1) {
   1136 				vall = valr = cp->un.value.level[0];
   1137 			} else {
   1138 				vall = cp->un.value.level[0];
   1139 				valr = cp->un.value.level[1];
   1140 			}
   1141 			sc->sc_dac.voll = vall;
   1142 			sc->sc_dac.volr = valr;
   1143 			iw_mixer_line_level(sc, IW_DAC, vall, valr);
   1144 		}
   1145 		break;
   1146 
   1147 	case IW_LOOPBACK_LVL:
   1148 		if (cp->type == AUDIO_MIXER_VALUE) {
   1149 			error = 0;
   1150 			if (cp->un.value.num_channels != 1) {
   1151 				return EINVAL;
   1152 			} else {
   1153 				valr = vall = cp->un.value.level[0];
   1154 			}
   1155 			sc->sc_loopback.voll = vall;
   1156 			sc->sc_loopback.volr = valr;
   1157 			iw_mixer_line_level(sc, IW_LOOPBACK, vall, valr);
   1158 		}
   1159 		break;
   1160 
   1161 	case IW_MONO_IN_LVL:
   1162 		if (cp->type == AUDIO_MIXER_VALUE) {
   1163 			error = 0;
   1164 			if (cp->un.value.num_channels != 1) {
   1165 				return EINVAL;
   1166 			} else {
   1167 				valr = vall = cp->un.value.level[0];
   1168 			}
   1169 			sc->sc_monoin.voll = vall;
   1170 			sc->sc_monoin.volr = valr;
   1171 			iw_mixer_line_level(sc, IW_MONO_IN, vall, valr);
   1172 		}
   1173 		break;
   1174 	case IW_RECORD_SOURCE:
   1175 		error = 0;
   1176 		sc->sc_recsrcbits = cp->un.ord << 6;
   1177 		DPRINTF(("record source %d bits %x\n", cp->un.ord,
   1178 		    sc->sc_recsrcbits));
   1179 		iw_mixer_line_level(sc, IW_REC, sc->sc_rec.voll,
   1180 		    sc->sc_rec.volr);
   1181 		break;
   1182 	}
   1183 
   1184 	return error;
   1185 }
   1186 
   1187 
   1188 int
   1189 iw_get_port(void *addr, mixer_ctrl_t *cp)
   1190 {
   1191 	struct iw_softc *sc;
   1192 	int error;
   1193 
   1194 	sc = addr;
   1195 	error = EINVAL;
   1196 	switch (cp->dev) {
   1197 	case IW_MIC_IN_LVL:
   1198 		if (cp->type == AUDIO_MIXER_VALUE) {
   1199 			cp->un.value.num_channels = 2;
   1200 			cp->un.value.level[0] = sc->sc_mic.voll;
   1201 			cp->un.value.level[1] = sc->sc_mic.volr;
   1202 			error = 0;
   1203 		}
   1204 		break;
   1205 	case IW_AUX1_LVL:
   1206 		if (cp->type == AUDIO_MIXER_VALUE) {
   1207 			cp->un.value.num_channels = 2;
   1208 			cp->un.value.level[0] = sc->sc_aux1.voll;
   1209 			cp->un.value.level[1] = sc->sc_aux1.volr;
   1210 			error = 0;
   1211 		}
   1212 		break;
   1213 	case IW_AUX2_LVL:
   1214 		if (cp->type == AUDIO_MIXER_VALUE) {
   1215 			cp->un.value.num_channels = 2;
   1216 			cp->un.value.level[0] = sc->sc_aux2.voll;
   1217 			cp->un.value.level[1] = sc->sc_aux2.volr;
   1218 			error = 0;
   1219 		}
   1220 		break;
   1221 	case IW_LINE_OUT_LVL:
   1222 		if (cp->type == AUDIO_MIXER_VALUE) {
   1223 			cp->un.value.num_channels = 2;
   1224 			cp->un.value.level[0] = sc->sc_lineout.voll;
   1225 			cp->un.value.level[1] = sc->sc_lineout.volr;
   1226 			error = 0;
   1227 		}
   1228 		break;
   1229 	case IW_LINE_IN_LVL:
   1230 		if (cp->type == AUDIO_MIXER_VALUE) {
   1231 			cp->un.value.num_channels = 2;
   1232 			cp->un.value.level[0] = sc->sc_linein.voll;
   1233 			cp->un.value.level[1] = sc->sc_linein.volr;
   1234 			error = 0;
   1235 		}
   1236 		break;
   1237 	case IW_REC_LVL:
   1238 		if (cp->type == AUDIO_MIXER_VALUE) {
   1239 			cp->un.value.num_channels = 2;
   1240 			cp->un.value.level[0] = sc->sc_rec.voll;
   1241 			cp->un.value.level[1] = sc->sc_rec.volr;
   1242 			error = 0;
   1243 		}
   1244 		break;
   1245 
   1246 	case IW_DAC_LVL:
   1247 		if (cp->type == AUDIO_MIXER_VALUE) {
   1248 			cp->un.value.num_channels = 2;
   1249 			cp->un.value.level[0] = sc->sc_dac.voll;
   1250 			cp->un.value.level[1] = sc->sc_dac.volr;
   1251 			error = 0;
   1252 		}
   1253 		break;
   1254 
   1255 	case IW_LOOPBACK_LVL:
   1256 		if (cp->type == AUDIO_MIXER_VALUE) {
   1257 			cp->un.value.num_channels = 1;
   1258 			cp->un.value.level[0] = sc->sc_loopback.voll;
   1259 			error = 0;
   1260 		}
   1261 		break;
   1262 
   1263 	case IW_MONO_IN_LVL:
   1264 		if (cp->type == AUDIO_MIXER_VALUE) {
   1265 			cp->un.value.num_channels = 1;
   1266 			cp->un.value.level[0] = sc->sc_monoin.voll;
   1267 			error = 0;
   1268 		}
   1269 		break;
   1270 	case IW_RECORD_SOURCE:
   1271 		cp->un.ord = sc->sc_recsrcbits >> 6;
   1272 		error = 0;
   1273 		break;
   1274 	}
   1275 
   1276 	return error;
   1277 }
   1278 
   1279 
   1280 
   1281 int
   1282 iw_query_devinfo(void *addr, mixer_devinfo_t *dip)
   1283 {
   1284 
   1285 	switch (dip->index) {
   1286 	case IW_MIC_IN_LVL:	/* Microphone */
   1287 		dip->type = AUDIO_MIXER_VALUE;
   1288 		dip->mixer_class = IW_INPUT_CLASS;
   1289 		dip->prev = AUDIO_MIXER_LAST;
   1290 		dip->next = AUDIO_MIXER_LAST;
   1291 		strcpy(dip->label.name, AudioNmicrophone);
   1292 		dip->un.v.num_channels = 2;
   1293 		strcpy(dip->un.v.units.name, AudioNvolume);
   1294 		break;
   1295 	case IW_AUX1_LVL:
   1296 		dip->type = AUDIO_MIXER_VALUE;
   1297 		dip->mixer_class = IW_INPUT_CLASS;
   1298 		dip->prev = AUDIO_MIXER_LAST;
   1299 		dip->next = AUDIO_MIXER_LAST;
   1300 		strcpy(dip->label.name, AudioNline);
   1301 		dip->un.v.num_channels = 2;
   1302 		strcpy(dip->un.v.units.name, AudioNvolume);
   1303 		break;
   1304 	case IW_AUX2_LVL:
   1305 		dip->type = AUDIO_MIXER_VALUE;
   1306 		dip->mixer_class = IW_INPUT_CLASS;
   1307 		dip->prev = AUDIO_MIXER_LAST;
   1308 		dip->next = AUDIO_MIXER_LAST;
   1309 		strcpy(dip->label.name, AudioNcd);
   1310 		dip->un.v.num_channels = 2;
   1311 		strcpy(dip->un.v.units.name, AudioNvolume);
   1312 		break;
   1313 	case IW_LINE_OUT_LVL:
   1314 		dip->type = AUDIO_MIXER_VALUE;
   1315 		dip->mixer_class = IW_OUTPUT_CLASS;
   1316 		dip->prev = AUDIO_MIXER_LAST;
   1317 		dip->next = AUDIO_MIXER_LAST;
   1318 		strcpy(dip->label.name, AudioNline);
   1319 		dip->un.v.num_channels = 2;
   1320 		strcpy(dip->un.v.units.name, AudioNvolume);
   1321 		break;
   1322 	case IW_DAC_LVL:
   1323 		dip->type = AUDIO_MIXER_VALUE;
   1324 		dip->mixer_class = IW_OUTPUT_CLASS;
   1325 		dip->prev = AUDIO_MIXER_LAST;
   1326 		dip->next = AUDIO_MIXER_LAST;
   1327 		strcpy(dip->label.name, AudioNdac);
   1328 		dip->un.v.num_channels = 2;
   1329 		strcpy(dip->un.v.units.name, AudioNvolume);
   1330 		break;
   1331 	case IW_LINE_IN_LVL:
   1332 		dip->type = AUDIO_MIXER_VALUE;
   1333 		dip->mixer_class = IW_INPUT_CLASS;
   1334 		dip->prev = AUDIO_MIXER_LAST;
   1335 		dip->next = AUDIO_MIXER_LAST;
   1336 		strcpy(dip->label.name, AudioNinput);
   1337 		dip->un.v.num_channels = 2;
   1338 		strcpy(dip->un.v.units.name, AudioNvolume);
   1339 		break;
   1340 	case IW_MONO_IN_LVL:
   1341 		dip->type = AUDIO_MIXER_VALUE;
   1342 		dip->mixer_class = IW_INPUT_CLASS;
   1343 		dip->prev = AUDIO_MIXER_LAST;
   1344 		dip->next = AUDIO_MIXER_LAST;
   1345 		strcpy(dip->label.name, AudioNmono);
   1346 		dip->un.v.num_channels = 1;
   1347 		strcpy(dip->un.v.units.name, AudioNvolume);
   1348 		break;
   1349 
   1350 	case IW_REC_LVL:	/* record level */
   1351 		dip->type = AUDIO_MIXER_VALUE;
   1352 		dip->mixer_class = IW_RECORD_CLASS;
   1353 		dip->prev = AUDIO_MIXER_LAST;
   1354 		dip->next = AUDIO_MIXER_LAST;
   1355 		strcpy(dip->label.name, AudioNrecord);
   1356 		dip->un.v.num_channels = 2;
   1357 		strcpy(dip->un.v.units.name, AudioNvolume);
   1358 		break;
   1359 
   1360 	case IW_LOOPBACK_LVL:
   1361 		dip->type = AUDIO_MIXER_VALUE;
   1362 		dip->mixer_class = IW_RECORD_CLASS;
   1363 		dip->prev = AUDIO_MIXER_LAST;
   1364 		dip->next = AUDIO_MIXER_LAST;
   1365 		strcpy(dip->label.name, "filter");
   1366 		dip->un.v.num_channels = 1;
   1367 		strcpy(dip->un.v.units.name, AudioNvolume);
   1368 		break;
   1369 
   1370 	case IW_RECORD_SOURCE:
   1371 		dip->mixer_class = IW_RECORD_CLASS;
   1372 		dip->type = AUDIO_MIXER_ENUM;
   1373 		dip->prev = AUDIO_MIXER_LAST;
   1374 		dip->next = AUDIO_MIXER_LAST;
   1375 		strcpy(dip->label.name, AudioNsource);
   1376 		dip->un.e.num_mem = 4;
   1377 		strcpy(dip->un.e.member[0].label.name, AudioNline);
   1378 		dip->un.e.member[0].ord = IW_LINE_IN_SRC;
   1379 		strcpy(dip->un.e.member[1].label.name, "aux1");
   1380 		dip->un.e.member[1].ord = IW_AUX1_SRC;
   1381 		strcpy(dip->un.e.member[2].label.name, AudioNmicrophone);
   1382 		dip->un.e.member[2].ord = IW_MIC_IN_SRC;
   1383 		strcpy(dip->un.e.member[3].label.name, AudioNmixerout);
   1384 		dip->un.e.member[3].ord = IW_MIX_OUT_SRC;
   1385 		break;
   1386 	case IW_INPUT_CLASS:
   1387 		dip->type = AUDIO_MIXER_CLASS;
   1388 		dip->mixer_class = IW_INPUT_CLASS;
   1389 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1390 		strcpy(dip->label.name, AudioCinputs);
   1391 		break;
   1392 	case IW_OUTPUT_CLASS:
   1393 		dip->type = AUDIO_MIXER_CLASS;
   1394 		dip->mixer_class = IW_OUTPUT_CLASS;
   1395 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1396 		strcpy(dip->label.name, AudioCoutputs);
   1397 		break;
   1398 	case IW_RECORD_CLASS:	/* record source class */
   1399 		dip->type = AUDIO_MIXER_CLASS;
   1400 		dip->mixer_class = IW_RECORD_CLASS;
   1401 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1402 		strcpy(dip->label.name, AudioCrecord);
   1403 		return 0;
   1404 	default:
   1405 		return ENXIO;
   1406 	}
   1407 	return 0;
   1408 }
   1409 
   1410 
   1411 void *
   1412 iw_malloc(void *addr, int direction, size_t size)
   1413 {
   1414 	struct iw_softc *sc;
   1415 	int drq;
   1416 
   1417 	sc = addr;
   1418 	if (direction == AUMODE_PLAY)
   1419 		drq = sc->sc_playdrq;
   1420 	else
   1421 		drq = sc->sc_recdrq;
   1422 	return isa_malloc(sc->sc_ic, drq, size, M_DEVBUF, M_WAITOK);
   1423 }
   1424 
   1425 void
   1426 iw_free(void *addr, void *ptr, size_t size)
   1427 {
   1428 
   1429 	isa_free(ptr, M_DEVBUF);
   1430 }
   1431 
   1432 size_t
   1433 iw_round_buffersize(void *addr, int direction, size_t size)
   1434 {
   1435 	struct iw_softc *sc;
   1436 	bus_size_t maxsize;
   1437 
   1438 	sc = addr;
   1439 	if (direction == AUMODE_PLAY)
   1440 		maxsize = sc->sc_play_maxsize;
   1441 	else
   1442 		maxsize = sc->sc_rec_maxsize;
   1443 
   1444 	if (size > maxsize)
   1445 		size = maxsize;
   1446 	return size;
   1447 }
   1448 
   1449 int
   1450 iw_get_props(void *addr)
   1451 {
   1452 	struct iw_softc *sc;
   1453 
   1454 	sc = addr;
   1455 	return AUDIO_PROP_MMAP |
   1456 		(sc->sc_fullduplex ? AUDIO_PROP_FULLDUPLEX : 0);
   1457 }
   1458 
   1459 void
   1460 iw_get_locks(void *addr, kmutex_t **intr, kmutex_t **thread)
   1461 {
   1462 	struct iw_softc *sc;
   1463 
   1464 	sc = addr;
   1465 	*intr = &sc->sc_intr_lock;
   1466 	*thread = &sc->sc_lock;
   1467 }
   1468