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eso.c revision 1.67
      1 /*	$NetBSD: eso.c,v 1.67 2017/06/01 02:45:11 chs Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2008 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software developed for The NetBSD Foundation
      8  * by Andrew Doran.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 /*
     33  * Copyright (c) 1999, 2000, 2004 Klaus J. Klein
     34  * All rights reserved.
     35  *
     36  * Redistribution and use in source and binary forms, with or without
     37  * modification, are permitted provided that the following conditions
     38  * are met:
     39  * 1. Redistributions of source code must retain the above copyright
     40  *    notice, this list of conditions and the following disclaimer.
     41  * 2. Redistributions in binary form must reproduce the above copyright
     42  *    notice, this list of conditions and the following disclaimer in the
     43  *    documentation and/or other materials provided with the distribution.
     44  * 3. The name of the author may not be used to endorse or promote products
     45  *    derived from this software without specific prior written permission.
     46  *
     47  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     48  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     49  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     50  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     51  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     52  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     53  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     54  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     55  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     56  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     57  * SUCH DAMAGE.
     58  */
     59 
     60 /*
     61  * ESS Technology Inc. Solo-1 PCI AudioDrive (ES1938/1946) device driver.
     62  */
     63 
     64 #include <sys/cdefs.h>
     65 __KERNEL_RCSID(0, "$NetBSD: eso.c,v 1.67 2017/06/01 02:45:11 chs Exp $");
     66 
     67 #include "mpu.h"
     68 
     69 #include <sys/param.h>
     70 #include <sys/systm.h>
     71 #include <sys/kernel.h>
     72 #include <sys/kmem.h>
     73 #include <sys/device.h>
     74 #include <sys/queue.h>
     75 #include <sys/proc.h>
     76 
     77 #include <dev/pci/pcidevs.h>
     78 #include <dev/pci/pcivar.h>
     79 
     80 #include <sys/audioio.h>
     81 #include <dev/audio_if.h>
     82 
     83 #include <dev/mulaw.h>
     84 #include <dev/auconv.h>
     85 
     86 #include <dev/ic/mpuvar.h>
     87 #include <dev/ic/i8237reg.h>
     88 #include <dev/pci/esoreg.h>
     89 #include <dev/pci/esovar.h>
     90 
     91 #include <sys/bus.h>
     92 #include <sys/intr.h>
     93 
     94 /*
     95  * XXX Work around the 24-bit implementation limit of the Audio 1 DMA
     96  * XXX engine by allocating through the ISA DMA tag.
     97  */
     98 #if defined(amd64) || defined(i386)
     99 #include <dev/isa/isavar.h>
    100 #endif
    101 
    102 #if defined(AUDIO_DEBUG) || defined(DEBUG)
    103 #define DPRINTF(x) printf x
    104 #else
    105 #define DPRINTF(x)
    106 #endif
    107 
    108 struct eso_dma {
    109 	bus_dma_tag_t		ed_dmat;
    110 	bus_dmamap_t		ed_map;
    111 	void *			ed_kva;
    112 	bus_dma_segment_t	ed_segs[1];
    113 	int			ed_nsegs;
    114 	size_t			ed_size;
    115 	SLIST_ENTRY(eso_dma)	ed_slist;
    116 };
    117 
    118 #define KVADDR(dma)	((void *)(dma)->ed_kva)
    119 #define DMAADDR(dma)	((dma)->ed_map->dm_segs[0].ds_addr)
    120 
    121 /* Autoconfiguration interface */
    122 static int eso_match(device_t, cfdata_t, void *);
    123 static void eso_attach(device_t, device_t, void *);
    124 static void eso_defer(device_t);
    125 static int eso_print(void *, const char *);
    126 
    127 CFATTACH_DECL_NEW(eso, sizeof (struct eso_softc),
    128     eso_match, eso_attach, NULL, NULL);
    129 
    130 /* PCI interface */
    131 static int eso_intr(void *);
    132 
    133 /* MI audio layer interface */
    134 static int	eso_query_encoding(void *, struct audio_encoding *);
    135 static int	eso_set_params(void *, int, int, audio_params_t *,
    136 		    audio_params_t *, stream_filter_list_t *,
    137 		    stream_filter_list_t *);
    138 static int	eso_round_blocksize(void *, int, int, const audio_params_t *);
    139 static int	eso_halt_output(void *);
    140 static int	eso_halt_input(void *);
    141 static int	eso_getdev(void *, struct audio_device *);
    142 static int	eso_set_port(void *, mixer_ctrl_t *);
    143 static int	eso_get_port(void *, mixer_ctrl_t *);
    144 static int	eso_query_devinfo(void *, mixer_devinfo_t *);
    145 static void *	eso_allocm(void *, int, size_t);
    146 static void	eso_freem(void *, void *, size_t);
    147 static size_t	eso_round_buffersize(void *, int, size_t);
    148 static paddr_t	eso_mappage(void *, void *, off_t, int);
    149 static int	eso_get_props(void *);
    150 static int	eso_trigger_output(void *, void *, void *, int,
    151 		    void (*)(void *), void *, const audio_params_t *);
    152 static int	eso_trigger_input(void *, void *, void *, int,
    153 		    void (*)(void *), void *, const audio_params_t *);
    154 static void	eso_get_locks(void *, kmutex_t **, kmutex_t **);
    155 
    156 static const struct audio_hw_if eso_hw_if = {
    157 	NULL,			/* open */
    158 	NULL,			/* close */
    159 	NULL,			/* drain */
    160 	eso_query_encoding,
    161 	eso_set_params,
    162 	eso_round_blocksize,
    163 	NULL,			/* commit_settings */
    164 	NULL,			/* init_output */
    165 	NULL,			/* init_input */
    166 	NULL,			/* start_output */
    167 	NULL,			/* start_input */
    168 	eso_halt_output,
    169 	eso_halt_input,
    170 	NULL,			/* speaker_ctl */
    171 	eso_getdev,
    172 	NULL,			/* setfd */
    173 	eso_set_port,
    174 	eso_get_port,
    175 	eso_query_devinfo,
    176 	eso_allocm,
    177 	eso_freem,
    178 	eso_round_buffersize,
    179 	eso_mappage,
    180 	eso_get_props,
    181 	eso_trigger_output,
    182 	eso_trigger_input,
    183 	NULL,			/* dev_ioctl */
    184 	eso_get_locks,
    185 };
    186 
    187 static const char * const eso_rev2model[] = {
    188 	"ES1938",
    189 	"ES1946",
    190 	"ES1946 Revision E"
    191 };
    192 
    193 #define ESO_NFORMATS	8
    194 static const struct audio_format eso_formats[ESO_NFORMATS] = {
    195 	{NULL, AUMODE_PLAY | AUMODE_RECORD, AUDIO_ENCODING_SLINEAR_LE, 16, 16,
    196 	 2, AUFMT_STEREO, 0, {ESO_MINRATE, ESO_MAXRATE}},
    197 	{NULL, AUMODE_PLAY | AUMODE_RECORD, AUDIO_ENCODING_SLINEAR_LE, 16, 16,
    198 	 1, AUFMT_MONAURAL, 0, {ESO_MINRATE, ESO_MAXRATE}},
    199 	{NULL, AUMODE_PLAY | AUMODE_RECORD, AUDIO_ENCODING_ULINEAR_LE, 16, 16,
    200 	 2, AUFMT_STEREO, 0, {ESO_MINRATE, ESO_MAXRATE}},
    201 	{NULL, AUMODE_PLAY | AUMODE_RECORD, AUDIO_ENCODING_ULINEAR_LE, 16, 16,
    202 	 1, AUFMT_MONAURAL, 0, {ESO_MINRATE, ESO_MAXRATE}},
    203 	{NULL, AUMODE_PLAY | AUMODE_RECORD, AUDIO_ENCODING_SLINEAR_LE, 8, 8,
    204 	 2, AUFMT_STEREO, 0, {ESO_MINRATE, ESO_MAXRATE}},
    205 	{NULL, AUMODE_PLAY | AUMODE_RECORD, AUDIO_ENCODING_SLINEAR_LE, 8, 8,
    206 	 1, AUFMT_MONAURAL, 0, {ESO_MINRATE, ESO_MAXRATE}},
    207 	{NULL, AUMODE_PLAY | AUMODE_RECORD, AUDIO_ENCODING_ULINEAR_LE, 8, 8,
    208 	 2, AUFMT_STEREO, 0, {ESO_MINRATE, ESO_MAXRATE}},
    209 	{NULL, AUMODE_PLAY | AUMODE_RECORD, AUDIO_ENCODING_ULINEAR_LE, 8, 8,
    210 	 1, AUFMT_MONAURAL, 0, {ESO_MINRATE, ESO_MAXRATE}}
    211 };
    212 
    213 
    214 /*
    215  * Utility routines
    216  */
    217 /* Register access etc. */
    218 static uint8_t	eso_read_ctlreg(struct eso_softc *, uint8_t);
    219 static uint8_t	eso_read_mixreg(struct eso_softc *, uint8_t);
    220 static uint8_t	eso_read_rdr(struct eso_softc *);
    221 static void	eso_reload_master_vol(struct eso_softc *);
    222 static int	eso_reset(struct eso_softc *);
    223 static void	eso_set_gain(struct eso_softc *, unsigned int);
    224 static int	eso_set_recsrc(struct eso_softc *, unsigned int);
    225 static int	eso_set_monooutsrc(struct eso_softc *, unsigned int);
    226 static int	eso_set_monoinbypass(struct eso_softc *, unsigned int);
    227 static int	eso_set_preamp(struct eso_softc *, unsigned int);
    228 static void	eso_write_cmd(struct eso_softc *, uint8_t);
    229 static void	eso_write_ctlreg(struct eso_softc *, uint8_t, uint8_t);
    230 static void	eso_write_mixreg(struct eso_softc *, uint8_t, uint8_t);
    231 /* DMA memory allocation */
    232 static int	eso_allocmem(struct eso_softc *, size_t, size_t, size_t,
    233 		    int, struct eso_dma *);
    234 static void	eso_freemem(struct eso_dma *);
    235 static struct eso_dma *	eso_kva2dma(const struct eso_softc *, const void *);
    236 
    237 
    238 static int
    239 eso_match(device_t parent, cfdata_t match, void *aux)
    240 {
    241 	struct pci_attach_args *pa;
    242 
    243 	pa = aux;
    244 	if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_ESSTECH &&
    245 	    PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ESSTECH_SOLO1)
    246 		return 1;
    247 
    248 	return 0;
    249 }
    250 
    251 static void
    252 eso_attach(device_t parent, device_t self, void *aux)
    253 {
    254 	struct eso_softc *sc;
    255 	struct pci_attach_args *pa;
    256 	struct audio_attach_args aa;
    257 	pci_intr_handle_t ih;
    258 	bus_addr_t vcbase;
    259 	const char *intrstring;
    260 	int idx, error;
    261 	uint8_t a2mode, mvctl;
    262 	char intrbuf[PCI_INTRSTR_LEN];
    263 
    264 	sc = device_private(self);
    265 	sc->sc_dev = self;
    266 	pa = aux;
    267 	aprint_naive(": Audio controller\n");
    268 
    269 	mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE);
    270 	mutex_init(&sc->sc_intr_lock, MUTEX_DEFAULT, IPL_AUDIO);
    271 
    272 	sc->sc_revision = PCI_REVISION(pa->pa_class);
    273 	aprint_normal(": ESS Solo-1 PCI AudioDrive ");
    274 	if (sc->sc_revision <
    275 	    sizeof (eso_rev2model) / sizeof (eso_rev2model[0]))
    276 		aprint_normal("%s\n", eso_rev2model[sc->sc_revision]);
    277 	else
    278 		aprint_normal("(unknown rev. 0x%02x)\n", sc->sc_revision);
    279 
    280 	/* Map I/O registers. */
    281 	if (pci_mapreg_map(pa, ESO_PCI_BAR_IO, PCI_MAPREG_TYPE_IO, 0,
    282 	    &sc->sc_iot, &sc->sc_ioh, NULL, NULL)) {
    283 		aprint_error_dev(sc->sc_dev, "can't map I/O space\n");
    284 		return;
    285 	}
    286 	if (pci_mapreg_map(pa, ESO_PCI_BAR_SB, PCI_MAPREG_TYPE_IO, 0,
    287 	    &sc->sc_sb_iot, &sc->sc_sb_ioh, NULL, NULL)) {
    288 		aprint_error_dev(sc->sc_dev, "can't map SB I/O space\n");
    289 		return;
    290 	}
    291 	if (pci_mapreg_map(pa, ESO_PCI_BAR_VC, PCI_MAPREG_TYPE_IO, 0,
    292 	    &sc->sc_dmac_iot, &sc->sc_dmac_ioh, &vcbase, &sc->sc_vcsize)) {
    293 		aprint_error_dev(sc->sc_dev, "can't map VC I/O space\n");
    294 		/* Don't bail out yet: we can map it later, see below. */
    295 		vcbase = 0;
    296 		sc->sc_vcsize = 0x10; /* From the data sheet. */
    297 	}
    298 	if (pci_mapreg_map(pa, ESO_PCI_BAR_MPU, PCI_MAPREG_TYPE_IO, 0,
    299 	    &sc->sc_mpu_iot, &sc->sc_mpu_ioh, NULL, NULL)) {
    300 		aprint_error_dev(sc->sc_dev, "can't map MPU I/O space\n");
    301 		return;
    302 	}
    303 	if (pci_mapreg_map(pa, ESO_PCI_BAR_GAME, PCI_MAPREG_TYPE_IO, 0,
    304 	    &sc->sc_game_iot, &sc->sc_game_ioh, NULL, NULL)) {
    305 		aprint_error_dev(sc->sc_dev, "can't map Game I/O space\n");
    306 		return;
    307 	}
    308 
    309 	sc->sc_dmat = pa->pa_dmat;
    310 	SLIST_INIT(&sc->sc_dmas);
    311 	sc->sc_dmac_configured = 0;
    312 
    313 	/* Enable bus mastering. */
    314 	pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
    315 	    pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG) |
    316 	    PCI_COMMAND_MASTER_ENABLE);
    317 
    318 	/* Reset the device; bail out upon failure. */
    319 	mutex_spin_enter(&sc->sc_intr_lock);
    320 	error = eso_reset(sc);
    321 	mutex_spin_exit(&sc->sc_intr_lock);
    322 	if (error != 0) {
    323 		aprint_error_dev(sc->sc_dev, "can't reset\n");
    324 		return;
    325 	}
    326 
    327 	/* Select the DMA/IRQ policy: DDMA, ISA IRQ emulation disabled. */
    328 	pci_conf_write(pa->pa_pc, pa->pa_tag, ESO_PCI_S1C,
    329 	    pci_conf_read(pa->pa_pc, pa->pa_tag, ESO_PCI_S1C) &
    330 	    ~(ESO_PCI_S1C_IRQP_MASK | ESO_PCI_S1C_DMAP_MASK));
    331 
    332 	/* Enable the relevant (DMA) interrupts. */
    333 	bus_space_write_1(sc->sc_iot, sc->sc_ioh, ESO_IO_IRQCTL,
    334 	    ESO_IO_IRQCTL_A1IRQ | ESO_IO_IRQCTL_A2IRQ | ESO_IO_IRQCTL_HVIRQ |
    335 	    ESO_IO_IRQCTL_MPUIRQ);
    336 
    337 	mutex_spin_enter(&sc->sc_intr_lock);
    338 
    339 	/* Set up A1's sample rate generator for new-style parameters. */
    340 	a2mode = eso_read_mixreg(sc, ESO_MIXREG_A2MODE);
    341 	a2mode |= ESO_MIXREG_A2MODE_NEWA1 | ESO_MIXREG_A2MODE_ASYNC;
    342 	eso_write_mixreg(sc, ESO_MIXREG_A2MODE, a2mode);
    343 
    344 	/* Slave Master Volume to Hardware Volume Control Counter, unmask IRQ.*/
    345 	mvctl = eso_read_mixreg(sc, ESO_MIXREG_MVCTL);
    346 	mvctl &= ~ESO_MIXREG_MVCTL_SPLIT;
    347 	mvctl |= ESO_MIXREG_MVCTL_HVIRQM;
    348 	eso_write_mixreg(sc, ESO_MIXREG_MVCTL, mvctl);
    349 
    350 	/* Set mixer regs to something reasonable, needs work. */
    351 	sc->sc_recmon = sc->sc_spatializer = sc->sc_mvmute = 0;
    352 	eso_set_monooutsrc(sc, ESO_MIXREG_MPM_MOMUTE);
    353 	eso_set_monoinbypass(sc, 0);
    354 	eso_set_preamp(sc, 1);
    355 	for (idx = 0; idx < ESO_NGAINDEVS; idx++) {
    356 		int v;
    357 
    358 		switch (idx) {
    359 		case ESO_MIC_PLAY_VOL:
    360 		case ESO_LINE_PLAY_VOL:
    361 		case ESO_CD_PLAY_VOL:
    362 		case ESO_MONO_PLAY_VOL:
    363 		case ESO_AUXB_PLAY_VOL:
    364 		case ESO_DAC_REC_VOL:
    365 		case ESO_LINE_REC_VOL:
    366 		case ESO_SYNTH_REC_VOL:
    367 		case ESO_CD_REC_VOL:
    368 		case ESO_MONO_REC_VOL:
    369 		case ESO_AUXB_REC_VOL:
    370 		case ESO_SPATIALIZER:
    371 			v = 0;
    372 			break;
    373 		case ESO_MASTER_VOL:
    374 			v = ESO_GAIN_TO_6BIT(AUDIO_MAX_GAIN / 2);
    375 			break;
    376 		default:
    377 			v = ESO_GAIN_TO_4BIT(AUDIO_MAX_GAIN / 2);
    378 			break;
    379 		}
    380 		sc->sc_gain[idx][ESO_LEFT] = sc->sc_gain[idx][ESO_RIGHT] = v;
    381 		eso_set_gain(sc, idx);
    382 	}
    383 
    384 	eso_set_recsrc(sc, ESO_MIXREG_ERS_MIC);
    385 
    386 	mutex_spin_exit(&sc->sc_intr_lock);
    387 
    388 	/* Map and establish the interrupt. */
    389 	if (pci_intr_map(pa, &ih)) {
    390 		aprint_error_dev(sc->sc_dev, "couldn't map interrupt\n");
    391 		return;
    392 	}
    393 
    394 	intrstring = pci_intr_string(pa->pa_pc, ih, intrbuf, sizeof(intrbuf));
    395 	sc->sc_ih  = pci_intr_establish(pa->pa_pc, ih, IPL_AUDIO, eso_intr, sc);
    396 	if (sc->sc_ih == NULL) {
    397 		aprint_error_dev(sc->sc_dev, "couldn't establish interrupt");
    398 		if (intrstring != NULL)
    399 			aprint_error(" at %s", intrstring);
    400 		aprint_error("\n");
    401 		mutex_destroy(&sc->sc_lock);
    402 		mutex_destroy(&sc->sc_intr_lock);
    403 		return;
    404 	}
    405 	aprint_normal_dev(sc->sc_dev, "interrupting at %s\n", intrstring);
    406 
    407 	cv_init(&sc->sc_pcv, "esoho");
    408 	cv_init(&sc->sc_rcv, "esohi");
    409 
    410 	/*
    411 	 * Set up the DDMA Control register; a suitable I/O region has been
    412 	 * supposedly mapped in the VC base address register.
    413 	 *
    414 	 * The Solo-1 has an ... interesting silicon bug that causes it to
    415 	 * not respond to I/O space accesses to the Audio 1 DMA controller
    416 	 * if the latter's mapping base address is aligned on a 1K boundary.
    417 	 * As a consequence, it is quite possible for the mapping provided
    418 	 * in the VC BAR to be useless.  To work around this, we defer this
    419 	 * part until all autoconfiguration on our parent bus is completed
    420 	 * and then try to map it ourselves in fulfillment of the constraint.
    421 	 *
    422 	 * According to the register map we may write to the low 16 bits
    423 	 * only, but experimenting has shown we're safe.
    424 	 * -kjk
    425 	 */
    426 	if (ESO_VALID_DDMAC_BASE(vcbase)) {
    427 		pci_conf_write(pa->pa_pc, pa->pa_tag, ESO_PCI_DDMAC,
    428 		    vcbase | ESO_PCI_DDMAC_DE);
    429 		sc->sc_dmac_configured = 1;
    430 
    431 		aprint_normal_dev(sc->sc_dev,
    432 		    "mapping Audio 1 DMA using VC I/O space at 0x%lx\n",
    433 		    (unsigned long)vcbase);
    434 	} else {
    435 		DPRINTF(("%s: VC I/O space at 0x%lx not suitable, deferring\n",
    436 		    device_xname(sc->sc_dev), (unsigned long)vcbase));
    437 		sc->sc_pa = *pa;
    438 		config_defer(self, eso_defer);
    439 	}
    440 
    441 	audio_attach_mi(&eso_hw_if, sc, sc->sc_dev);
    442 
    443 	aa.type = AUDIODEV_TYPE_OPL;
    444 	aa.hwif = NULL;
    445 	aa.hdl = NULL;
    446 	(void)config_found(sc->sc_dev, &aa, audioprint);
    447 
    448 	aa.type = AUDIODEV_TYPE_MPU;
    449 	aa.hwif = NULL;
    450 	aa.hdl = NULL;
    451 	sc->sc_mpudev = config_found(sc->sc_dev, &aa, audioprint);
    452 	if (sc->sc_mpudev != NULL) {
    453 		/* Unmask the MPU irq. */
    454 		mutex_spin_enter(&sc->sc_intr_lock);
    455 		mvctl = eso_read_mixreg(sc, ESO_MIXREG_MVCTL);
    456 		mvctl |= ESO_MIXREG_MVCTL_MPUIRQM;
    457 		eso_write_mixreg(sc, ESO_MIXREG_MVCTL, mvctl);
    458 		mutex_spin_exit(&sc->sc_intr_lock);
    459 	}
    460 
    461 	aa.type = AUDIODEV_TYPE_AUX;
    462 	aa.hwif = NULL;
    463 	aa.hdl = NULL;
    464 	(void)config_found(sc->sc_dev, &aa, eso_print);
    465 }
    466 
    467 static void
    468 eso_defer(device_t self)
    469 {
    470 	struct eso_softc *sc;
    471 	struct pci_attach_args *pa;
    472 	bus_addr_t addr, start;
    473 
    474 	sc = device_private(self);
    475 	pa = &sc->sc_pa;
    476 	aprint_normal_dev(sc->sc_dev, "");
    477 
    478 	/*
    479 	 * This is outright ugly, but since we must not make assumptions
    480 	 * on the underlying allocator's behaviour it's the most straight-
    481 	 * forward way to implement it.  Note that we skip over the first
    482 	 * 1K region, which is typically occupied by an attached ISA bus.
    483 	 */
    484 	mutex_enter(&sc->sc_lock);
    485 	for (start = 0x0400; start < 0xffff; start += 0x0400) {
    486 		if (bus_space_alloc(sc->sc_iot,
    487 		    start + sc->sc_vcsize, start + 0x0400 - 1,
    488 		    sc->sc_vcsize, sc->sc_vcsize, 0, 0, &addr,
    489 		    &sc->sc_dmac_ioh) != 0)
    490 			continue;
    491 
    492 		mutex_spin_enter(&sc->sc_intr_lock);
    493 		pci_conf_write(pa->pa_pc, pa->pa_tag, ESO_PCI_DDMAC,
    494 		    addr | ESO_PCI_DDMAC_DE);
    495 		mutex_spin_exit(&sc->sc_intr_lock);
    496 		sc->sc_dmac_iot = sc->sc_iot;
    497 		sc->sc_dmac_configured = 1;
    498 		aprint_normal("mapping Audio 1 DMA using I/O space at 0x%lx\n",
    499 		    (unsigned long)addr);
    500 
    501 		mutex_exit(&sc->sc_lock);
    502 		return;
    503 	}
    504 	mutex_exit(&sc->sc_lock);
    505 
    506 	aprint_error("can't map Audio 1 DMA into I/O space\n");
    507 }
    508 
    509 /* ARGSUSED */
    510 static int
    511 eso_print(void *aux, const char *pnp)
    512 {
    513 
    514 	/* Only joys can attach via this; easy. */
    515 	if (pnp)
    516 		aprint_normal("joy at %s:", pnp);
    517 
    518 	return UNCONF;
    519 }
    520 
    521 static void
    522 eso_write_cmd(struct eso_softc *sc, uint8_t cmd)
    523 {
    524 	int i;
    525 
    526 	/* Poll for busy indicator to become clear. */
    527 	for (i = 0; i < ESO_WDR_TIMEOUT; i++) {
    528 		if ((bus_space_read_1(sc->sc_sb_iot, sc->sc_sb_ioh, ESO_SB_RSR)
    529 		    & ESO_SB_RSR_BUSY) == 0) {
    530 			bus_space_write_1(sc->sc_sb_iot, sc->sc_sb_ioh,
    531 			    ESO_SB_WDR, cmd);
    532 			return;
    533 		} else {
    534 			delay(10);
    535 		}
    536 	}
    537 
    538 	printf("%s: WDR timeout\n", device_xname(sc->sc_dev));
    539 	return;
    540 }
    541 
    542 /* Write to a controller register */
    543 static void
    544 eso_write_ctlreg(struct eso_softc *sc, uint8_t reg, uint8_t val)
    545 {
    546 
    547 	/* DPRINTF(("ctlreg 0x%02x = 0x%02x\n", reg, val)); */
    548 
    549 	eso_write_cmd(sc, reg);
    550 	eso_write_cmd(sc, val);
    551 }
    552 
    553 /* Read out the Read Data Register */
    554 static uint8_t
    555 eso_read_rdr(struct eso_softc *sc)
    556 {
    557 	int i;
    558 
    559 	for (i = 0; i < ESO_RDR_TIMEOUT; i++) {
    560 		if (bus_space_read_1(sc->sc_sb_iot, sc->sc_sb_ioh,
    561 		    ESO_SB_RBSR) & ESO_SB_RBSR_RDAV) {
    562 			return (bus_space_read_1(sc->sc_sb_iot,
    563 			    sc->sc_sb_ioh, ESO_SB_RDR));
    564 		} else {
    565 			delay(10);
    566 		}
    567 	}
    568 
    569 	printf("%s: RDR timeout\n", device_xname(sc->sc_dev));
    570 	return (-1);
    571 }
    572 
    573 static uint8_t
    574 eso_read_ctlreg(struct eso_softc *sc, uint8_t reg)
    575 {
    576 
    577 	eso_write_cmd(sc, ESO_CMD_RCR);
    578 	eso_write_cmd(sc, reg);
    579 	return eso_read_rdr(sc);
    580 }
    581 
    582 static void
    583 eso_write_mixreg(struct eso_softc *sc, uint8_t reg, uint8_t val)
    584 {
    585 
    586 	KASSERT(mutex_owned(&sc->sc_intr_lock));
    587 
    588 	/* DPRINTF(("mixreg 0x%02x = 0x%02x\n", reg, val)); */
    589 
    590 	bus_space_write_1(sc->sc_sb_iot, sc->sc_sb_ioh, ESO_SB_MIXERADDR, reg);
    591 	bus_space_write_1(sc->sc_sb_iot, sc->sc_sb_ioh, ESO_SB_MIXERDATA, val);
    592 }
    593 
    594 static uint8_t
    595 eso_read_mixreg(struct eso_softc *sc, uint8_t reg)
    596 {
    597 	uint8_t val;
    598 
    599 	KASSERT(mutex_owned(&sc->sc_intr_lock));
    600 
    601 	bus_space_write_1(sc->sc_sb_iot, sc->sc_sb_ioh, ESO_SB_MIXERADDR, reg);
    602 	val = bus_space_read_1(sc->sc_sb_iot, sc->sc_sb_ioh, ESO_SB_MIXERDATA);
    603 
    604 	return val;
    605 }
    606 
    607 static int
    608 eso_intr(void *hdl)
    609 {
    610 	struct eso_softc *sc = hdl;
    611 #if NMPU > 0
    612 	struct mpu_softc *sc_mpu = device_private(sc->sc_mpudev);
    613 #endif
    614 	uint8_t irqctl;
    615 
    616 	mutex_spin_enter(&sc->sc_intr_lock);
    617 
    618 	irqctl = bus_space_read_1(sc->sc_iot, sc->sc_ioh, ESO_IO_IRQCTL);
    619 
    620 	/* If it wasn't ours, that's all she wrote. */
    621 	if ((irqctl & (ESO_IO_IRQCTL_A1IRQ | ESO_IO_IRQCTL_A2IRQ |
    622 	    ESO_IO_IRQCTL_HVIRQ | ESO_IO_IRQCTL_MPUIRQ)) == 0) {
    623 		mutex_spin_exit(&sc->sc_intr_lock);
    624 		return 0;
    625 	}
    626 
    627 	if (irqctl & ESO_IO_IRQCTL_A1IRQ) {
    628 		/* Clear interrupt. */
    629 		(void)bus_space_read_1(sc->sc_sb_iot, sc->sc_sb_ioh,
    630 		    ESO_SB_RBSR);
    631 
    632 		if (sc->sc_rintr)
    633 			sc->sc_rintr(sc->sc_rarg);
    634 		else
    635 			cv_broadcast(&sc->sc_rcv);
    636 	}
    637 
    638 	if (irqctl & ESO_IO_IRQCTL_A2IRQ) {
    639 		/*
    640 		 * Clear the A2 IRQ latch: the cached value reflects the
    641 		 * current DAC settings with the IRQ latch bit not set.
    642 		 */
    643 		eso_write_mixreg(sc, ESO_MIXREG_A2C2, sc->sc_a2c2);
    644 
    645 		if (sc->sc_pintr)
    646 			sc->sc_pintr(sc->sc_parg);
    647 		else
    648 			cv_broadcast(&sc->sc_pcv);
    649 	}
    650 
    651 	if (irqctl & ESO_IO_IRQCTL_HVIRQ) {
    652 		/* Clear interrupt. */
    653 		eso_write_mixreg(sc, ESO_MIXREG_CHVIR, ESO_MIXREG_CHVIR_CHVIR);
    654 
    655 		/*
    656 		 * Raise a flag to cause a lazy update of the in-softc gain
    657 		 * values the next time the software mixer is read to keep
    658 		 * interrupt service cost low.  ~0 cannot occur otherwise
    659 		 * as the master volume has a precision of 6 bits only.
    660 		 */
    661 		sc->sc_gain[ESO_MASTER_VOL][ESO_LEFT] = (uint8_t)~0;
    662 	}
    663 
    664 #if NMPU > 0
    665 	if ((irqctl & ESO_IO_IRQCTL_MPUIRQ) && sc_mpu != NULL)
    666 		mpu_intr(sc_mpu);
    667 #endif
    668 
    669 	mutex_spin_exit(&sc->sc_intr_lock);
    670 	return 1;
    671 }
    672 
    673 /* Perform a software reset, including DMA FIFOs. */
    674 static int
    675 eso_reset(struct eso_softc *sc)
    676 {
    677 	int i;
    678 
    679 	bus_space_write_1(sc->sc_sb_iot, sc->sc_sb_ioh, ESO_SB_RESET,
    680 	    ESO_SB_RESET_SW | ESO_SB_RESET_FIFO);
    681 	/* `Delay' suggested in the data sheet. */
    682 	(void)bus_space_read_1(sc->sc_sb_iot, sc->sc_sb_ioh, ESO_SB_STATUS);
    683 	bus_space_write_1(sc->sc_sb_iot, sc->sc_sb_ioh, ESO_SB_RESET, 0);
    684 
    685 	/* Wait for reset to take effect. */
    686 	for (i = 0; i < ESO_RESET_TIMEOUT; i++) {
    687 		/* Poll for data to become available. */
    688 		if ((bus_space_read_1(sc->sc_sb_iot, sc->sc_sb_ioh,
    689 		    ESO_SB_RBSR) & ESO_SB_RBSR_RDAV) != 0 &&
    690 		    bus_space_read_1(sc->sc_sb_iot, sc->sc_sb_ioh,
    691 			ESO_SB_RDR) == ESO_SB_RDR_RESETMAGIC) {
    692 
    693 			/* Activate Solo-1 extension commands. */
    694 			eso_write_cmd(sc, ESO_CMD_EXTENB);
    695 			/* Reset mixer registers. */
    696 			eso_write_mixreg(sc, ESO_MIXREG_RESET,
    697 			    ESO_MIXREG_RESET_RESET);
    698 
    699 			return 0;
    700 		} else {
    701 			delay(1000);
    702 		}
    703 	}
    704 
    705 	printf("%s: reset timeout\n", device_xname(sc->sc_dev));
    706 	return -1;
    707 }
    708 
    709 static int
    710 eso_query_encoding(void *hdl, struct audio_encoding *fp)
    711 {
    712 
    713 	switch (fp->index) {
    714 	case 0:
    715 		strcpy(fp->name, AudioEulinear);
    716 		fp->encoding = AUDIO_ENCODING_ULINEAR;
    717 		fp->precision = 8;
    718 		fp->flags = 0;
    719 		break;
    720 	case 1:
    721 		strcpy(fp->name, AudioEmulaw);
    722 		fp->encoding = AUDIO_ENCODING_ULAW;
    723 		fp->precision = 8;
    724 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
    725 		break;
    726 	case 2:
    727 		strcpy(fp->name, AudioEalaw);
    728 		fp->encoding = AUDIO_ENCODING_ALAW;
    729 		fp->precision = 8;
    730 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
    731 		break;
    732 	case 3:
    733 		strcpy(fp->name, AudioEslinear);
    734 		fp->encoding = AUDIO_ENCODING_SLINEAR;
    735 		fp->precision = 8;
    736 		fp->flags = 0;
    737 		break;
    738 	case 4:
    739 		strcpy(fp->name, AudioEslinear_le);
    740 		fp->encoding = AUDIO_ENCODING_SLINEAR_LE;
    741 		fp->precision = 16;
    742 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
    743 		break;
    744 	case 5:
    745 		strcpy(fp->name, AudioEulinear_le);
    746 		fp->encoding = AUDIO_ENCODING_ULINEAR_LE;
    747 		fp->precision = 16;
    748 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
    749 		break;
    750 	case 6:
    751 		strcpy(fp->name, AudioEslinear_be);
    752 		fp->encoding = AUDIO_ENCODING_SLINEAR_BE;
    753 		fp->precision = 16;
    754 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
    755 		break;
    756 	case 7:
    757 		strcpy(fp->name, AudioEulinear_be);
    758 		fp->encoding = AUDIO_ENCODING_ULINEAR_BE;
    759 		fp->precision = 16;
    760 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
    761 		break;
    762 	default:
    763 		return EINVAL;
    764 	}
    765 
    766 	return 0;
    767 }
    768 
    769 static int
    770 eso_set_params(void *hdl, int setmode, int usemode,
    771     audio_params_t *play, audio_params_t *rec, stream_filter_list_t *pfil,
    772     stream_filter_list_t *rfil)
    773 {
    774 	struct eso_softc *sc;
    775 	struct audio_params *p;
    776 	stream_filter_list_t *fil;
    777 	int mode, r[2], rd[2], ar[2], clk;
    778 	unsigned int srg, fltdiv;
    779 	int i;
    780 
    781 	sc = hdl;
    782 	for (mode = AUMODE_RECORD; mode != -1;
    783 	     mode = mode == AUMODE_RECORD ? AUMODE_PLAY : -1) {
    784 		if ((setmode & mode) == 0)
    785 			continue;
    786 
    787 		p = (mode == AUMODE_PLAY) ? play : rec;
    788 
    789 		if (p->sample_rate < ESO_MINRATE ||
    790 		    p->sample_rate > ESO_MAXRATE ||
    791 		    (p->precision != 8 && p->precision != 16) ||
    792 		    (p->channels != 1 && p->channels != 2))
    793 			return EINVAL;
    794 
    795 		/*
    796 		 * We'll compute both possible sample rate dividers and pick
    797 		 * the one with the least error.
    798 		 */
    799 #define ABS(x) ((x) < 0 ? -(x) : (x))
    800 		r[0] = ESO_CLK0 /
    801 		    (128 - (rd[0] = 128 - ESO_CLK0 / p->sample_rate));
    802 		r[1] = ESO_CLK1 /
    803 		    (128 - (rd[1] = 128 - ESO_CLK1 / p->sample_rate));
    804 
    805 		ar[0] = p->sample_rate - r[0];
    806 		ar[1] = p->sample_rate - r[1];
    807 		clk = ABS(ar[0]) > ABS(ar[1]) ? 1 : 0;
    808 		srg = rd[clk] | (clk == 1 ? ESO_CLK1_SELECT : 0x00);
    809 
    810 		/* Roll-off frequency of 87%, as in the ES1888 driver. */
    811 		fltdiv = 256 - 200279L / r[clk];
    812 
    813 		/* Update to reflect the possibly inexact rate. */
    814 		p->sample_rate = r[clk];
    815 
    816 		fil = (mode == AUMODE_PLAY) ? pfil : rfil;
    817 		i = auconv_set_converter(eso_formats, ESO_NFORMATS,
    818 					 mode, p, FALSE, fil);
    819 		if (i < 0)
    820 			return EINVAL;
    821 
    822 		mutex_spin_enter(&sc->sc_intr_lock);
    823 		if (mode == AUMODE_RECORD) {
    824 			/* Audio 1 */
    825 			DPRINTF(("A1 srg 0x%02x fdiv 0x%02x\n", srg, fltdiv));
    826 			eso_write_ctlreg(sc, ESO_CTLREG_SRG, srg);
    827 			eso_write_ctlreg(sc, ESO_CTLREG_FLTDIV, fltdiv);
    828 		} else {
    829 			/* Audio 2 */
    830 			DPRINTF(("A2 srg 0x%02x fdiv 0x%02x\n", srg, fltdiv));
    831 			eso_write_mixreg(sc, ESO_MIXREG_A2SRG, srg);
    832 			eso_write_mixreg(sc, ESO_MIXREG_A2FLTDIV, fltdiv);
    833 		}
    834 		mutex_spin_exit(&sc->sc_intr_lock);
    835 #undef ABS
    836 
    837 	}
    838 
    839 	return 0;
    840 }
    841 
    842 static int
    843 eso_round_blocksize(void *hdl, int blk, int mode,
    844     const audio_params_t *param)
    845 {
    846 
    847 	return blk & -32;	/* keep good alignment; at least 16 req'd */
    848 }
    849 
    850 static int
    851 eso_halt_output(void *hdl)
    852 {
    853 	struct eso_softc *sc;
    854 	int error;
    855 
    856 	sc = hdl;
    857 	DPRINTF(("%s: halt_output\n", device_xname(sc->sc_dev)));
    858 
    859 	/*
    860 	 * Disable auto-initialize DMA, allowing the FIFO to drain and then
    861 	 * stop.  The interrupt callback pointer is cleared at this
    862 	 * point so that an outstanding FIFO interrupt for the remaining data
    863 	 * will be acknowledged without further processing.
    864 	 *
    865 	 * This does not immediately `abort' an operation in progress (c.f.
    866 	 * audio(9)) but is the method to leave the FIFO behind in a clean
    867 	 * state with the least hair.  (Besides, that item needs to be
    868 	 * rephrased for trigger_*()-based DMA environments.)
    869 	 */
    870 	eso_write_mixreg(sc, ESO_MIXREG_A2C1,
    871 	    ESO_MIXREG_A2C1_FIFOENB | ESO_MIXREG_A2C1_DMAENB);
    872 	bus_space_write_1(sc->sc_iot, sc->sc_ioh, ESO_IO_A2DMAM,
    873 	    ESO_IO_A2DMAM_DMAENB);
    874 
    875 	sc->sc_pintr = NULL;
    876 	mutex_exit(&sc->sc_lock);
    877 	error = cv_timedwait_sig(&sc->sc_pcv, &sc->sc_intr_lock, sc->sc_pdrain);
    878 	if (!mutex_tryenter(&sc->sc_lock)) {
    879 		mutex_spin_exit(&sc->sc_intr_lock);
    880 		mutex_enter(&sc->sc_lock);
    881 		mutex_spin_enter(&sc->sc_intr_lock);
    882 	}
    883 
    884 	/* Shut down DMA completely. */
    885 	eso_write_mixreg(sc, ESO_MIXREG_A2C1, 0);
    886 	bus_space_write_1(sc->sc_iot, sc->sc_ioh, ESO_IO_A2DMAM, 0);
    887 
    888 	return error == EWOULDBLOCK ? 0 : error;
    889 }
    890 
    891 static int
    892 eso_halt_input(void *hdl)
    893 {
    894 	struct eso_softc *sc;
    895 	int error;
    896 
    897 	sc = hdl;
    898 	DPRINTF(("%s: halt_input\n", device_xname(sc->sc_dev)));
    899 
    900 	/* Just like eso_halt_output(), but for Audio 1. */
    901 	eso_write_ctlreg(sc, ESO_CTLREG_A1C2,
    902 	    ESO_CTLREG_A1C2_READ | ESO_CTLREG_A1C2_ADC |
    903 	    ESO_CTLREG_A1C2_DMAENB);
    904 	bus_space_write_1(sc->sc_dmac_iot, sc->sc_dmac_ioh, ESO_DMAC_MODE,
    905 	    DMA37MD_WRITE | DMA37MD_DEMAND);
    906 
    907 	sc->sc_rintr = NULL;
    908 	mutex_exit(&sc->sc_lock);
    909 	error = cv_timedwait_sig(&sc->sc_rcv, &sc->sc_intr_lock, sc->sc_rdrain);
    910 	if (!mutex_tryenter(&sc->sc_lock)) {
    911 		mutex_spin_exit(&sc->sc_intr_lock);
    912 		mutex_enter(&sc->sc_lock);
    913 		mutex_spin_enter(&sc->sc_intr_lock);
    914 	}
    915 
    916 	/* Shut down DMA completely. */
    917 	eso_write_ctlreg(sc, ESO_CTLREG_A1C2,
    918 	    ESO_CTLREG_A1C2_READ | ESO_CTLREG_A1C2_ADC);
    919 	bus_space_write_1(sc->sc_dmac_iot, sc->sc_dmac_ioh, ESO_DMAC_MASK,
    920 	    ESO_DMAC_MASK_MASK);
    921 
    922 	return error == EWOULDBLOCK ? 0 : error;
    923 }
    924 
    925 static int
    926 eso_getdev(void *hdl, struct audio_device *retp)
    927 {
    928 	struct eso_softc *sc;
    929 
    930 	sc = hdl;
    931 	strncpy(retp->name, "ESS Solo-1", sizeof (retp->name));
    932 	snprintf(retp->version, sizeof (retp->version), "0x%02x",
    933 	    sc->sc_revision);
    934 	if (sc->sc_revision <
    935 	    sizeof (eso_rev2model) / sizeof (eso_rev2model[0]))
    936 		strncpy(retp->config, eso_rev2model[sc->sc_revision],
    937 		    sizeof (retp->config));
    938 	else
    939 		strncpy(retp->config, "unknown", sizeof (retp->config));
    940 
    941 	return 0;
    942 }
    943 
    944 static int
    945 eso_set_port(void *hdl, mixer_ctrl_t *cp)
    946 {
    947 	struct eso_softc *sc;
    948 	unsigned int lgain, rgain;
    949 	uint8_t tmp;
    950 	int error;
    951 
    952 	sc = hdl;
    953 	error = 0;
    954 
    955 	mutex_spin_enter(&sc->sc_intr_lock);
    956 
    957 	switch (cp->dev) {
    958 	case ESO_DAC_PLAY_VOL:
    959 	case ESO_MIC_PLAY_VOL:
    960 	case ESO_LINE_PLAY_VOL:
    961 	case ESO_SYNTH_PLAY_VOL:
    962 	case ESO_CD_PLAY_VOL:
    963 	case ESO_AUXB_PLAY_VOL:
    964 	case ESO_RECORD_VOL:
    965 	case ESO_DAC_REC_VOL:
    966 	case ESO_MIC_REC_VOL:
    967 	case ESO_LINE_REC_VOL:
    968 	case ESO_SYNTH_REC_VOL:
    969 	case ESO_CD_REC_VOL:
    970 	case ESO_AUXB_REC_VOL:
    971 		if (cp->type != AUDIO_MIXER_VALUE) {
    972 			error = EINVAL;
    973 			break;
    974 		}
    975 
    976 		/*
    977 		 * Stereo-capable mixer ports: if we get a single-channel
    978 		 * gain value passed in, then we duplicate it to both left
    979 		 * and right channels.
    980 		 */
    981 		switch (cp->un.value.num_channels) {
    982 		case 1:
    983 			lgain = rgain = ESO_GAIN_TO_4BIT(
    984 			    cp->un.value.level[AUDIO_MIXER_LEVEL_MONO]);
    985 			break;
    986 		case 2:
    987 			lgain = ESO_GAIN_TO_4BIT(
    988 			    cp->un.value.level[AUDIO_MIXER_LEVEL_LEFT]);
    989 			rgain = ESO_GAIN_TO_4BIT(
    990 			    cp->un.value.level[AUDIO_MIXER_LEVEL_RIGHT]);
    991 			break;
    992 		default:
    993 			error = EINVAL;
    994 			break;
    995 		}
    996 
    997 		if (!error) {
    998 			sc->sc_gain[cp->dev][ESO_LEFT] = lgain;
    999 			sc->sc_gain[cp->dev][ESO_RIGHT] = rgain;
   1000 			eso_set_gain(sc, cp->dev);
   1001 		}
   1002 		break;
   1003 
   1004 	case ESO_MASTER_VOL:
   1005 		if (cp->type != AUDIO_MIXER_VALUE) {
   1006 			error = EINVAL;
   1007 			break;
   1008 		}
   1009 
   1010 		/* Like above, but a precision of 6 bits. */
   1011 		switch (cp->un.value.num_channels) {
   1012 		case 1:
   1013 			lgain = rgain = ESO_GAIN_TO_6BIT(
   1014 			    cp->un.value.level[AUDIO_MIXER_LEVEL_MONO]);
   1015 			break;
   1016 		case 2:
   1017 			lgain = ESO_GAIN_TO_6BIT(
   1018 			    cp->un.value.level[AUDIO_MIXER_LEVEL_LEFT]);
   1019 			rgain = ESO_GAIN_TO_6BIT(
   1020 			    cp->un.value.level[AUDIO_MIXER_LEVEL_RIGHT]);
   1021 			break;
   1022 		default:
   1023 			error = EINVAL;
   1024 			break;
   1025 		}
   1026 
   1027 		if (!error) {
   1028 			sc->sc_gain[cp->dev][ESO_LEFT] = lgain;
   1029 			sc->sc_gain[cp->dev][ESO_RIGHT] = rgain;
   1030 			eso_set_gain(sc, cp->dev);
   1031 		}
   1032 		break;
   1033 
   1034 	case ESO_SPATIALIZER:
   1035 		if (cp->type != AUDIO_MIXER_VALUE ||
   1036 		    cp->un.value.num_channels != 1) {
   1037 			error = EINVAL;
   1038 			break;
   1039 		}
   1040 
   1041 		sc->sc_gain[cp->dev][ESO_LEFT] =
   1042 		    sc->sc_gain[cp->dev][ESO_RIGHT] =
   1043 		    ESO_GAIN_TO_6BIT(
   1044 			cp->un.value.level[AUDIO_MIXER_LEVEL_MONO]);
   1045 		eso_set_gain(sc, cp->dev);
   1046 		break;
   1047 
   1048 	case ESO_MONO_PLAY_VOL:
   1049 	case ESO_MONO_REC_VOL:
   1050 		if (cp->type != AUDIO_MIXER_VALUE ||
   1051 		    cp->un.value.num_channels != 1) {
   1052 			error = EINVAL;
   1053 			break;
   1054 		}
   1055 
   1056 		sc->sc_gain[cp->dev][ESO_LEFT] =
   1057 		    sc->sc_gain[cp->dev][ESO_RIGHT] =
   1058 		    ESO_GAIN_TO_4BIT(
   1059 			cp->un.value.level[AUDIO_MIXER_LEVEL_MONO]);
   1060 		eso_set_gain(sc, cp->dev);
   1061 		break;
   1062 
   1063 	case ESO_PCSPEAKER_VOL:
   1064 		if (cp->type != AUDIO_MIXER_VALUE ||
   1065 		    cp->un.value.num_channels != 1) {
   1066 			error = EINVAL;
   1067 			break;
   1068 		}
   1069 
   1070 		sc->sc_gain[cp->dev][ESO_LEFT] =
   1071 		    sc->sc_gain[cp->dev][ESO_RIGHT] =
   1072 		    ESO_GAIN_TO_3BIT(
   1073 			cp->un.value.level[AUDIO_MIXER_LEVEL_MONO]);
   1074 		eso_set_gain(sc, cp->dev);
   1075 		break;
   1076 
   1077 	case ESO_SPATIALIZER_ENABLE:
   1078 		if (cp->type != AUDIO_MIXER_ENUM) {
   1079 			error = EINVAL;
   1080 			break;
   1081 		}
   1082 
   1083 		sc->sc_spatializer = (cp->un.ord != 0);
   1084 
   1085 		tmp = eso_read_mixreg(sc, ESO_MIXREG_SPAT);
   1086 		if (sc->sc_spatializer)
   1087 			tmp |= ESO_MIXREG_SPAT_ENB;
   1088 		else
   1089 			tmp &= ~ESO_MIXREG_SPAT_ENB;
   1090 		eso_write_mixreg(sc, ESO_MIXREG_SPAT,
   1091 		    tmp | ESO_MIXREG_SPAT_RSTREL);
   1092 		break;
   1093 
   1094 	case ESO_MASTER_MUTE:
   1095 		if (cp->type != AUDIO_MIXER_ENUM) {
   1096 			error = EINVAL;
   1097 			break;
   1098 		}
   1099 
   1100 		sc->sc_mvmute = (cp->un.ord != 0);
   1101 
   1102 		if (sc->sc_mvmute) {
   1103 			eso_write_mixreg(sc, ESO_MIXREG_LMVM,
   1104 			    eso_read_mixreg(sc, ESO_MIXREG_LMVM) |
   1105 			    ESO_MIXREG_LMVM_MUTE);
   1106 			eso_write_mixreg(sc, ESO_MIXREG_RMVM,
   1107 			    eso_read_mixreg(sc, ESO_MIXREG_RMVM) |
   1108 			    ESO_MIXREG_RMVM_MUTE);
   1109 		} else {
   1110 			eso_write_mixreg(sc, ESO_MIXREG_LMVM,
   1111 			    eso_read_mixreg(sc, ESO_MIXREG_LMVM) &
   1112 			    ~ESO_MIXREG_LMVM_MUTE);
   1113 			eso_write_mixreg(sc, ESO_MIXREG_RMVM,
   1114 			    eso_read_mixreg(sc, ESO_MIXREG_RMVM) &
   1115 			    ~ESO_MIXREG_RMVM_MUTE);
   1116 		}
   1117 		break;
   1118 
   1119 	case ESO_MONOOUT_SOURCE:
   1120 		if (cp->type != AUDIO_MIXER_ENUM) {
   1121 			error = EINVAL;
   1122 			break;
   1123 		}
   1124 
   1125 		error = eso_set_monooutsrc(sc, cp->un.ord);
   1126 		break;
   1127 
   1128 	case ESO_MONOIN_BYPASS:
   1129 		if (cp->type != AUDIO_MIXER_ENUM) {
   1130 			error = EINVAL;
   1131 			break;
   1132 		}
   1133 
   1134 		error = (eso_set_monoinbypass(sc, cp->un.ord));
   1135 		break;
   1136 
   1137 	case ESO_RECORD_MONITOR:
   1138 		if (cp->type != AUDIO_MIXER_ENUM) {
   1139 			error = EINVAL;
   1140 			break;
   1141 		}
   1142 
   1143 		sc->sc_recmon = (cp->un.ord != 0);
   1144 
   1145 		tmp = eso_read_ctlreg(sc, ESO_CTLREG_ACTL);
   1146 		if (sc->sc_recmon)
   1147 			tmp |= ESO_CTLREG_ACTL_RECMON;
   1148 		else
   1149 			tmp &= ~ESO_CTLREG_ACTL_RECMON;
   1150 		eso_write_ctlreg(sc, ESO_CTLREG_ACTL, tmp);
   1151 		break;
   1152 
   1153 	case ESO_RECORD_SOURCE:
   1154 		if (cp->type != AUDIO_MIXER_ENUM) {
   1155 			error = EINVAL;
   1156 			break;
   1157 		}
   1158 
   1159 		error = eso_set_recsrc(sc, cp->un.ord);
   1160 		break;
   1161 
   1162 	case ESO_MIC_PREAMP:
   1163 		if (cp->type != AUDIO_MIXER_ENUM) {
   1164 			error = EINVAL;
   1165 			break;
   1166 		}
   1167 
   1168 		error = eso_set_preamp(sc, cp->un.ord);
   1169 		break;
   1170 
   1171 	default:
   1172 		error = EINVAL;
   1173 		break;
   1174 	}
   1175 
   1176 	mutex_spin_exit(&sc->sc_intr_lock);
   1177 	return error;
   1178 }
   1179 
   1180 static int
   1181 eso_get_port(void *hdl, mixer_ctrl_t *cp)
   1182 {
   1183 	struct eso_softc *sc;
   1184 
   1185 	sc = hdl;
   1186 
   1187 	mutex_spin_enter(&sc->sc_intr_lock);
   1188 
   1189 	switch (cp->dev) {
   1190 	case ESO_MASTER_VOL:
   1191 		/* Reload from mixer after hardware volume control use. */
   1192 		if (sc->sc_gain[cp->dev][ESO_LEFT] == (uint8_t)~0)
   1193 			eso_reload_master_vol(sc);
   1194 		/* FALLTHROUGH */
   1195 	case ESO_DAC_PLAY_VOL:
   1196 	case ESO_MIC_PLAY_VOL:
   1197 	case ESO_LINE_PLAY_VOL:
   1198 	case ESO_SYNTH_PLAY_VOL:
   1199 	case ESO_CD_PLAY_VOL:
   1200 	case ESO_AUXB_PLAY_VOL:
   1201 	case ESO_RECORD_VOL:
   1202 	case ESO_DAC_REC_VOL:
   1203 	case ESO_MIC_REC_VOL:
   1204 	case ESO_LINE_REC_VOL:
   1205 	case ESO_SYNTH_REC_VOL:
   1206 	case ESO_CD_REC_VOL:
   1207 	case ESO_AUXB_REC_VOL:
   1208 		/*
   1209 		 * Stereo-capable ports: if a single-channel query is made,
   1210 		 * just return the left channel's value (since single-channel
   1211 		 * settings themselves are applied to both channels).
   1212 		 */
   1213 		switch (cp->un.value.num_channels) {
   1214 		case 1:
   1215 			cp->un.value.level[AUDIO_MIXER_LEVEL_MONO] =
   1216 			    sc->sc_gain[cp->dev][ESO_LEFT];
   1217 			break;
   1218 		case 2:
   1219 			cp->un.value.level[AUDIO_MIXER_LEVEL_LEFT] =
   1220 			    sc->sc_gain[cp->dev][ESO_LEFT];
   1221 			cp->un.value.level[AUDIO_MIXER_LEVEL_RIGHT] =
   1222 			    sc->sc_gain[cp->dev][ESO_RIGHT];
   1223 			break;
   1224 		default:
   1225 			break;
   1226 		}
   1227 		break;
   1228 
   1229 	case ESO_MONO_PLAY_VOL:
   1230 	case ESO_PCSPEAKER_VOL:
   1231 	case ESO_MONO_REC_VOL:
   1232 	case ESO_SPATIALIZER:
   1233 		if (cp->un.value.num_channels != 1) {
   1234 			break;
   1235 		}
   1236 		cp->un.value.level[AUDIO_MIXER_LEVEL_MONO] =
   1237 		    sc->sc_gain[cp->dev][ESO_LEFT];
   1238 		break;
   1239 
   1240 	case ESO_RECORD_MONITOR:
   1241 		cp->un.ord = sc->sc_recmon;
   1242 		break;
   1243 
   1244 	case ESO_RECORD_SOURCE:
   1245 		cp->un.ord = sc->sc_recsrc;
   1246 		break;
   1247 
   1248 	case ESO_MONOOUT_SOURCE:
   1249 		cp->un.ord = sc->sc_monooutsrc;
   1250 		break;
   1251 
   1252 	case ESO_MONOIN_BYPASS:
   1253 		cp->un.ord = sc->sc_monoinbypass;
   1254 		break;
   1255 
   1256 	case ESO_SPATIALIZER_ENABLE:
   1257 		cp->un.ord = sc->sc_spatializer;
   1258 		break;
   1259 
   1260 	case ESO_MIC_PREAMP:
   1261 		cp->un.ord = sc->sc_preamp;
   1262 		break;
   1263 
   1264 	case ESO_MASTER_MUTE:
   1265 		/* Reload from mixer after hardware volume control use. */
   1266 		if (sc->sc_gain[ESO_MASTER_VOL][ESO_LEFT] == (uint8_t)~0)
   1267 			eso_reload_master_vol(sc);
   1268 		cp->un.ord = sc->sc_mvmute;
   1269 		break;
   1270 
   1271 	default:
   1272 		break;
   1273 	}
   1274 
   1275 	mutex_spin_exit(&sc->sc_intr_lock);
   1276 	return 0;
   1277 }
   1278 
   1279 static int
   1280 eso_query_devinfo(void *hdl, mixer_devinfo_t *dip)
   1281 {
   1282 
   1283 	switch (dip->index) {
   1284 	case ESO_DAC_PLAY_VOL:
   1285 		dip->mixer_class = ESO_INPUT_CLASS;
   1286 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1287 		strcpy(dip->label.name, AudioNdac);
   1288 		dip->type = AUDIO_MIXER_VALUE;
   1289 		dip->un.v.num_channels = 2;
   1290 		strcpy(dip->un.v.units.name, AudioNvolume);
   1291 		break;
   1292 	case ESO_MIC_PLAY_VOL:
   1293 		dip->mixer_class = ESO_INPUT_CLASS;
   1294 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1295 		strcpy(dip->label.name, AudioNmicrophone);
   1296 		dip->type = AUDIO_MIXER_VALUE;
   1297 		dip->un.v.num_channels = 2;
   1298 		strcpy(dip->un.v.units.name, AudioNvolume);
   1299 		break;
   1300 	case ESO_LINE_PLAY_VOL:
   1301 		dip->mixer_class = ESO_INPUT_CLASS;
   1302 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1303 		strcpy(dip->label.name, AudioNline);
   1304 		dip->type = AUDIO_MIXER_VALUE;
   1305 		dip->un.v.num_channels = 2;
   1306 		strcpy(dip->un.v.units.name, AudioNvolume);
   1307 		break;
   1308 	case ESO_SYNTH_PLAY_VOL:
   1309 		dip->mixer_class = ESO_INPUT_CLASS;
   1310 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1311 		strcpy(dip->label.name, AudioNfmsynth);
   1312 		dip->type = AUDIO_MIXER_VALUE;
   1313 		dip->un.v.num_channels = 2;
   1314 		strcpy(dip->un.v.units.name, AudioNvolume);
   1315 		break;
   1316 	case ESO_MONO_PLAY_VOL:
   1317 		dip->mixer_class = ESO_INPUT_CLASS;
   1318 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1319 		strcpy(dip->label.name, "mono_in");
   1320 		dip->type = AUDIO_MIXER_VALUE;
   1321 		dip->un.v.num_channels = 1;
   1322 		strcpy(dip->un.v.units.name, AudioNvolume);
   1323 		break;
   1324 	case ESO_CD_PLAY_VOL:
   1325 		dip->mixer_class = ESO_INPUT_CLASS;
   1326 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1327 		strcpy(dip->label.name, AudioNcd);
   1328 		dip->type = AUDIO_MIXER_VALUE;
   1329 		dip->un.v.num_channels = 2;
   1330 		strcpy(dip->un.v.units.name, AudioNvolume);
   1331 		break;
   1332 	case ESO_AUXB_PLAY_VOL:
   1333 		dip->mixer_class = ESO_INPUT_CLASS;
   1334 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1335 		strcpy(dip->label.name, "auxb");
   1336 		dip->type = AUDIO_MIXER_VALUE;
   1337 		dip->un.v.num_channels = 2;
   1338 		strcpy(dip->un.v.units.name, AudioNvolume);
   1339 		break;
   1340 
   1341 	case ESO_MIC_PREAMP:
   1342 		dip->mixer_class = ESO_MICROPHONE_CLASS;
   1343 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1344 		strcpy(dip->label.name, AudioNpreamp);
   1345 		dip->type = AUDIO_MIXER_ENUM;
   1346 		dip->un.e.num_mem = 2;
   1347 		strcpy(dip->un.e.member[0].label.name, AudioNoff);
   1348 		dip->un.e.member[0].ord = 0;
   1349 		strcpy(dip->un.e.member[1].label.name, AudioNon);
   1350 		dip->un.e.member[1].ord = 1;
   1351 		break;
   1352 	case ESO_MICROPHONE_CLASS:
   1353 		dip->mixer_class = ESO_MICROPHONE_CLASS;
   1354 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1355 		strcpy(dip->label.name, AudioNmicrophone);
   1356 		dip->type = AUDIO_MIXER_CLASS;
   1357 		break;
   1358 
   1359 	case ESO_INPUT_CLASS:
   1360 		dip->mixer_class = ESO_INPUT_CLASS;
   1361 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1362 		strcpy(dip->label.name, AudioCinputs);
   1363 		dip->type = AUDIO_MIXER_CLASS;
   1364 		break;
   1365 
   1366 	case ESO_MASTER_VOL:
   1367 		dip->mixer_class = ESO_OUTPUT_CLASS;
   1368 		dip->prev = AUDIO_MIXER_LAST;
   1369 		dip->next = ESO_MASTER_MUTE;
   1370 		strcpy(dip->label.name, AudioNmaster);
   1371 		dip->type = AUDIO_MIXER_VALUE;
   1372 		dip->un.v.num_channels = 2;
   1373 		strcpy(dip->un.v.units.name, AudioNvolume);
   1374 		break;
   1375 	case ESO_MASTER_MUTE:
   1376 		dip->mixer_class = ESO_OUTPUT_CLASS;
   1377 		dip->prev = ESO_MASTER_VOL;
   1378 		dip->next = AUDIO_MIXER_LAST;
   1379 		strcpy(dip->label.name, AudioNmute);
   1380 		dip->type = AUDIO_MIXER_ENUM;
   1381 		dip->un.e.num_mem = 2;
   1382 		strcpy(dip->un.e.member[0].label.name, AudioNoff);
   1383 		dip->un.e.member[0].ord = 0;
   1384 		strcpy(dip->un.e.member[1].label.name, AudioNon);
   1385 		dip->un.e.member[1].ord = 1;
   1386 		break;
   1387 
   1388 	case ESO_PCSPEAKER_VOL:
   1389 		dip->mixer_class = ESO_OUTPUT_CLASS;
   1390 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1391 		strcpy(dip->label.name, "pc_speaker");
   1392 		dip->type = AUDIO_MIXER_VALUE;
   1393 		dip->un.v.num_channels = 1;
   1394 		strcpy(dip->un.v.units.name, AudioNvolume);
   1395 		break;
   1396 	case ESO_MONOOUT_SOURCE:
   1397 		dip->mixer_class = ESO_OUTPUT_CLASS;
   1398 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1399 		strcpy(dip->label.name, "mono_out");
   1400 		dip->type = AUDIO_MIXER_ENUM;
   1401 		dip->un.e.num_mem = 3;
   1402 		strcpy(dip->un.e.member[0].label.name, AudioNmute);
   1403 		dip->un.e.member[0].ord = ESO_MIXREG_MPM_MOMUTE;
   1404 		strcpy(dip->un.e.member[1].label.name, AudioNdac);
   1405 		dip->un.e.member[1].ord = ESO_MIXREG_MPM_MOA2R;
   1406 		strcpy(dip->un.e.member[2].label.name, AudioNmixerout);
   1407 		dip->un.e.member[2].ord = ESO_MIXREG_MPM_MOREC;
   1408 		break;
   1409 
   1410 	case ESO_MONOIN_BYPASS:
   1411 		dip->mixer_class = ESO_MONOIN_CLASS;
   1412 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1413 		strcpy(dip->label.name, "bypass");
   1414 		dip->type = AUDIO_MIXER_ENUM;
   1415 		dip->un.e.num_mem = 2;
   1416 		strcpy(dip->un.e.member[0].label.name, AudioNoff);
   1417 		dip->un.e.member[0].ord = 0;
   1418 		strcpy(dip->un.e.member[1].label.name, AudioNon);
   1419 		dip->un.e.member[1].ord = 1;
   1420 		break;
   1421 	case ESO_MONOIN_CLASS:
   1422 		dip->mixer_class = ESO_MONOIN_CLASS;
   1423 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1424 		strcpy(dip->label.name, "mono_in");
   1425 		dip->type = AUDIO_MIXER_CLASS;
   1426 		break;
   1427 
   1428 	case ESO_SPATIALIZER:
   1429 		dip->mixer_class = ESO_OUTPUT_CLASS;
   1430 		dip->prev = AUDIO_MIXER_LAST;
   1431 		dip->next = ESO_SPATIALIZER_ENABLE;
   1432 		strcpy(dip->label.name, AudioNspatial);
   1433 		dip->type = AUDIO_MIXER_VALUE;
   1434 		dip->un.v.num_channels = 1;
   1435 		strcpy(dip->un.v.units.name, "level");
   1436 		break;
   1437 	case ESO_SPATIALIZER_ENABLE:
   1438 		dip->mixer_class = ESO_OUTPUT_CLASS;
   1439 		dip->prev = ESO_SPATIALIZER;
   1440 		dip->next = AUDIO_MIXER_LAST;
   1441 		strcpy(dip->label.name, "enable");
   1442 		dip->type = AUDIO_MIXER_ENUM;
   1443 		dip->un.e.num_mem = 2;
   1444 		strcpy(dip->un.e.member[0].label.name, AudioNoff);
   1445 		dip->un.e.member[0].ord = 0;
   1446 		strcpy(dip->un.e.member[1].label.name, AudioNon);
   1447 		dip->un.e.member[1].ord = 1;
   1448 		break;
   1449 
   1450 	case ESO_OUTPUT_CLASS:
   1451 		dip->mixer_class = ESO_OUTPUT_CLASS;
   1452 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1453 		strcpy(dip->label.name, AudioCoutputs);
   1454 		dip->type = AUDIO_MIXER_CLASS;
   1455 		break;
   1456 
   1457 	case ESO_RECORD_MONITOR:
   1458 		dip->mixer_class = ESO_MONITOR_CLASS;
   1459 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1460 		strcpy(dip->label.name, AudioNmute);
   1461 		dip->type = AUDIO_MIXER_ENUM;
   1462 		dip->un.e.num_mem = 2;
   1463 		strcpy(dip->un.e.member[0].label.name, AudioNoff);
   1464 		dip->un.e.member[0].ord = 0;
   1465 		strcpy(dip->un.e.member[1].label.name, AudioNon);
   1466 		dip->un.e.member[1].ord = 1;
   1467 		break;
   1468 	case ESO_MONITOR_CLASS:
   1469 		dip->mixer_class = ESO_MONITOR_CLASS;
   1470 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1471 		strcpy(dip->label.name, AudioCmonitor);
   1472 		dip->type = AUDIO_MIXER_CLASS;
   1473 		break;
   1474 
   1475 	case ESO_RECORD_VOL:
   1476 		dip->mixer_class = ESO_RECORD_CLASS;
   1477 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1478 		strcpy(dip->label.name, AudioNrecord);
   1479 		dip->type = AUDIO_MIXER_VALUE;
   1480 		strcpy(dip->un.v.units.name, AudioNvolume);
   1481 		break;
   1482 	case ESO_RECORD_SOURCE:
   1483 		dip->mixer_class = ESO_RECORD_CLASS;
   1484 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1485 		strcpy(dip->label.name, AudioNsource);
   1486 		dip->type = AUDIO_MIXER_ENUM;
   1487 		dip->un.e.num_mem = 4;
   1488 		strcpy(dip->un.e.member[0].label.name, AudioNmicrophone);
   1489 		dip->un.e.member[0].ord = ESO_MIXREG_ERS_MIC;
   1490 		strcpy(dip->un.e.member[1].label.name, AudioNline);
   1491 		dip->un.e.member[1].ord = ESO_MIXREG_ERS_LINE;
   1492 		strcpy(dip->un.e.member[2].label.name, AudioNcd);
   1493 		dip->un.e.member[2].ord = ESO_MIXREG_ERS_CD;
   1494 		strcpy(dip->un.e.member[3].label.name, AudioNmixerout);
   1495 		dip->un.e.member[3].ord = ESO_MIXREG_ERS_MIXER;
   1496 		break;
   1497 	case ESO_DAC_REC_VOL:
   1498 		dip->mixer_class = ESO_RECORD_CLASS;
   1499 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1500 		strcpy(dip->label.name, AudioNdac);
   1501 		dip->type = AUDIO_MIXER_VALUE;
   1502 		dip->un.v.num_channels = 2;
   1503 		strcpy(dip->un.v.units.name, AudioNvolume);
   1504 		break;
   1505 	case ESO_MIC_REC_VOL:
   1506 		dip->mixer_class = ESO_RECORD_CLASS;
   1507 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1508 		strcpy(dip->label.name, AudioNmicrophone);
   1509 		dip->type = AUDIO_MIXER_VALUE;
   1510 		dip->un.v.num_channels = 2;
   1511 		strcpy(dip->un.v.units.name, AudioNvolume);
   1512 		break;
   1513 	case ESO_LINE_REC_VOL:
   1514 		dip->mixer_class = ESO_RECORD_CLASS;
   1515 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1516 		strcpy(dip->label.name, AudioNline);
   1517 		dip->type = AUDIO_MIXER_VALUE;
   1518 		dip->un.v.num_channels = 2;
   1519 		strcpy(dip->un.v.units.name, AudioNvolume);
   1520 		break;
   1521 	case ESO_SYNTH_REC_VOL:
   1522 		dip->mixer_class = ESO_RECORD_CLASS;
   1523 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1524 		strcpy(dip->label.name, AudioNfmsynth);
   1525 		dip->type = AUDIO_MIXER_VALUE;
   1526 		dip->un.v.num_channels = 2;
   1527 		strcpy(dip->un.v.units.name, AudioNvolume);
   1528 		break;
   1529 	case ESO_MONO_REC_VOL:
   1530 		dip->mixer_class = ESO_RECORD_CLASS;
   1531 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1532 		strcpy(dip->label.name, "mono_in");
   1533 		dip->type = AUDIO_MIXER_VALUE;
   1534 		dip->un.v.num_channels = 1; /* No lies */
   1535 		strcpy(dip->un.v.units.name, AudioNvolume);
   1536 		break;
   1537 	case ESO_CD_REC_VOL:
   1538 		dip->mixer_class = ESO_RECORD_CLASS;
   1539 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1540 		strcpy(dip->label.name, AudioNcd);
   1541 		dip->type = AUDIO_MIXER_VALUE;
   1542 		dip->un.v.num_channels = 2;
   1543 		strcpy(dip->un.v.units.name, AudioNvolume);
   1544 		break;
   1545 	case ESO_AUXB_REC_VOL:
   1546 		dip->mixer_class = ESO_RECORD_CLASS;
   1547 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1548 		strcpy(dip->label.name, "auxb");
   1549 		dip->type = AUDIO_MIXER_VALUE;
   1550 		dip->un.v.num_channels = 2;
   1551 		strcpy(dip->un.v.units.name, AudioNvolume);
   1552 		break;
   1553 	case ESO_RECORD_CLASS:
   1554 		dip->mixer_class = ESO_RECORD_CLASS;
   1555 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1556 		strcpy(dip->label.name, AudioCrecord);
   1557 		dip->type = AUDIO_MIXER_CLASS;
   1558 		break;
   1559 
   1560 	default:
   1561 		return ENXIO;
   1562 	}
   1563 
   1564 	return 0;
   1565 }
   1566 
   1567 static int
   1568 eso_allocmem(struct eso_softc *sc, size_t size, size_t align,
   1569     size_t boundary, int direction, struct eso_dma *ed)
   1570 {
   1571 	int error;
   1572 
   1573 	ed->ed_size = size;
   1574 
   1575 	error = bus_dmamem_alloc(ed->ed_dmat, ed->ed_size, align, boundary,
   1576 	    ed->ed_segs, sizeof (ed->ed_segs) / sizeof (ed->ed_segs[0]),
   1577 	    &ed->ed_nsegs, BUS_DMA_WAITOK);
   1578 	if (error)
   1579 		goto out;
   1580 
   1581 	error = bus_dmamem_map(ed->ed_dmat, ed->ed_segs, ed->ed_nsegs,
   1582 	    ed->ed_size, &ed->ed_kva, BUS_DMA_WAITOK | BUS_DMA_COHERENT);
   1583 	if (error)
   1584 		goto free;
   1585 
   1586 	error = bus_dmamap_create(ed->ed_dmat, ed->ed_size, 1, ed->ed_size, 0,
   1587 	    BUS_DMA_WAITOK, &ed->ed_map);
   1588 	if (error)
   1589 		goto unmap;
   1590 
   1591 	error = bus_dmamap_load(ed->ed_dmat, ed->ed_map, ed->ed_kva,
   1592 	    ed->ed_size, NULL, BUS_DMA_WAITOK |
   1593 	    (direction == AUMODE_RECORD) ? BUS_DMA_READ : BUS_DMA_WRITE);
   1594 	if (error)
   1595 		goto destroy;
   1596 
   1597 	return 0;
   1598 
   1599  destroy:
   1600 	bus_dmamap_destroy(ed->ed_dmat, ed->ed_map);
   1601  unmap:
   1602 	bus_dmamem_unmap(ed->ed_dmat, ed->ed_kva, ed->ed_size);
   1603  free:
   1604 	bus_dmamem_free(ed->ed_dmat, ed->ed_segs, ed->ed_nsegs);
   1605  out:
   1606 	return error;
   1607 }
   1608 
   1609 static void
   1610 eso_freemem(struct eso_dma *ed)
   1611 {
   1612 
   1613 	bus_dmamap_unload(ed->ed_dmat, ed->ed_map);
   1614 	bus_dmamap_destroy(ed->ed_dmat, ed->ed_map);
   1615 	bus_dmamem_unmap(ed->ed_dmat, ed->ed_kva, ed->ed_size);
   1616 	bus_dmamem_free(ed->ed_dmat, ed->ed_segs, ed->ed_nsegs);
   1617 }
   1618 
   1619 static struct eso_dma *
   1620 eso_kva2dma(const struct eso_softc *sc, const void *kva)
   1621 {
   1622 	struct eso_dma *p;
   1623 
   1624 	SLIST_FOREACH(p, &sc->sc_dmas, ed_slist) {
   1625 		if (KVADDR(p) == kva)
   1626 			return p;
   1627 	}
   1628 
   1629 	panic("%s: kva2dma: bad kva: %p", device_xname(sc->sc_dev), kva);
   1630 	/* NOTREACHED */
   1631 }
   1632 
   1633 static void *
   1634 eso_allocm(void *hdl, int direction, size_t size)
   1635 {
   1636 	struct eso_softc *sc;
   1637 	struct eso_dma *ed;
   1638 	size_t boundary;
   1639 	int error;
   1640 
   1641 	sc = hdl;
   1642 	ed = kmem_alloc(sizeof (*ed), KM_SLEEP);
   1643 
   1644 	/*
   1645 	 * Apparently the Audio 1 DMA controller's current address
   1646 	 * register can't roll over a 64K address boundary, so we have to
   1647 	 * take care of that ourselves.  Similarly, the Audio 2 DMA
   1648 	 * controller needs a 1M address boundary.
   1649 	 */
   1650 	if (direction == AUMODE_RECORD)
   1651 		boundary = 0x10000;
   1652 	else
   1653 		boundary = 0x100000;
   1654 
   1655 	/*
   1656 	 * XXX Work around allocation problems for Audio 1, which
   1657 	 * XXX implements the 24 low address bits only, with
   1658 	 * XXX machine-specific DMA tag use.
   1659 	 */
   1660 #ifdef alpha
   1661 	/*
   1662 	 * XXX Force allocation through the (ISA) SGMAP.
   1663 	 */
   1664 	if (direction == AUMODE_RECORD)
   1665 		ed->ed_dmat = alphabus_dma_get_tag(sc->sc_dmat, ALPHA_BUS_ISA);
   1666 	else
   1667 #elif defined(amd64) || defined(i386)
   1668 	/*
   1669 	 * XXX Force allocation through the ISA DMA tag.
   1670 	 */
   1671 	if (direction == AUMODE_RECORD)
   1672 		ed->ed_dmat = &isa_bus_dma_tag;
   1673 	else
   1674 #endif
   1675 		ed->ed_dmat = sc->sc_dmat;
   1676 
   1677 	error = eso_allocmem(sc, size, 32, boundary, direction, ed);
   1678 	if (error) {
   1679 		kmem_free(ed, sizeof(*ed));
   1680 		return NULL;
   1681 	}
   1682 	SLIST_INSERT_HEAD(&sc->sc_dmas, ed, ed_slist);
   1683 
   1684 	return KVADDR(ed);
   1685 }
   1686 
   1687 static void
   1688 eso_freem(void *hdl, void *addr, size_t size)
   1689 {
   1690 	struct eso_softc *sc;
   1691 	struct eso_dma *p;
   1692 
   1693 	sc = hdl;
   1694 	p = eso_kva2dma(sc, addr);
   1695 
   1696 	SLIST_REMOVE(&sc->sc_dmas, p, eso_dma, ed_slist);
   1697 	eso_freemem(p);
   1698 	kmem_free(p, sizeof(*p));
   1699 }
   1700 
   1701 static size_t
   1702 eso_round_buffersize(void *hdl, int direction, size_t bufsize)
   1703 {
   1704 	size_t maxsize;
   1705 
   1706 	/*
   1707 	 * The playback DMA buffer size on the Solo-1 is limited to 0xfff0
   1708 	 * bytes.  This is because IO_A2DMAC is a two byte value
   1709 	 * indicating the literal byte count, and the 4 least significant
   1710 	 * bits are read-only.  Zero is not used as a special case for
   1711 	 * 0x10000.
   1712 	 *
   1713 	 * For recording, DMAC_DMAC is the byte count - 1, so 0x10000 can
   1714 	 * be represented.
   1715 	 */
   1716 	maxsize = (direction == AUMODE_PLAY) ? 0xfff0 : 0x10000;
   1717 
   1718 	if (bufsize > maxsize)
   1719 		bufsize = maxsize;
   1720 
   1721 	return bufsize;
   1722 }
   1723 
   1724 static paddr_t
   1725 eso_mappage(void *hdl, void *addr, off_t offs, int prot)
   1726 {
   1727 	struct eso_softc *sc;
   1728 	struct eso_dma *ed;
   1729 
   1730 	sc = hdl;
   1731 	if (offs < 0)
   1732 		return -1;
   1733 	ed = eso_kva2dma(sc, addr);
   1734 
   1735 	return bus_dmamem_mmap(ed->ed_dmat, ed->ed_segs, ed->ed_nsegs,
   1736 	    offs, prot, BUS_DMA_WAITOK);
   1737 }
   1738 
   1739 /* ARGSUSED */
   1740 static int
   1741 eso_get_props(void *hdl)
   1742 {
   1743 
   1744 	return AUDIO_PROP_MMAP | AUDIO_PROP_INDEPENDENT |
   1745 	    AUDIO_PROP_FULLDUPLEX;
   1746 }
   1747 
   1748 static int
   1749 eso_trigger_output(void *hdl, void *start, void *end, int blksize,
   1750     void (*intr)(void *), void *arg, const audio_params_t *param)
   1751 {
   1752 	struct eso_softc *sc;
   1753 	struct eso_dma *ed;
   1754 	uint8_t a2c1;
   1755 
   1756 	sc = hdl;
   1757 	DPRINTF((
   1758 	    "%s: trigger_output: start %p, end %p, blksize %d, intr %p(%p)\n",
   1759 	    device_xname(sc->sc_dev), start, end, blksize, intr, arg));
   1760 	DPRINTF(("%s: param: rate %u, encoding %u, precision %u, channels %u\n",
   1761 	    device_xname(sc->sc_dev), param->sample_rate, param->encoding,
   1762 	    param->precision, param->channels));
   1763 
   1764 	/* Find DMA buffer. */
   1765 	ed = eso_kva2dma(sc, start);
   1766 	DPRINTF(("%s: dmaaddr %lx\n",
   1767 	    device_xname(sc->sc_dev), (unsigned long)DMAADDR(ed)));
   1768 
   1769 	sc->sc_pintr = intr;
   1770 	sc->sc_parg = arg;
   1771 
   1772 	/* Compute drain timeout. */
   1773 	sc->sc_pdrain = (blksize * NBBY * hz) /
   1774 	    (param->sample_rate * param->channels *
   1775 	     param->precision) + 2;	/* slop */
   1776 
   1777 	/* DMA transfer count (in `words'!) reload using 2's complement. */
   1778 	blksize = -(blksize >> 1);
   1779 	eso_write_mixreg(sc, ESO_MIXREG_A2TCRLO, blksize & 0xff);
   1780 	eso_write_mixreg(sc, ESO_MIXREG_A2TCRHI, blksize >> 8);
   1781 
   1782 	/* Update DAC to reflect DMA count and audio parameters. */
   1783 	/* Note: we cache A2C2 in order to avoid r/m/w at interrupt time. */
   1784 	if (param->precision == 16)
   1785 		sc->sc_a2c2 |= ESO_MIXREG_A2C2_16BIT;
   1786 	else
   1787 		sc->sc_a2c2 &= ~ESO_MIXREG_A2C2_16BIT;
   1788 	if (param->channels == 2)
   1789 		sc->sc_a2c2 |= ESO_MIXREG_A2C2_STEREO;
   1790 	else
   1791 		sc->sc_a2c2 &= ~ESO_MIXREG_A2C2_STEREO;
   1792 	if (param->encoding == AUDIO_ENCODING_SLINEAR_BE ||
   1793 	    param->encoding == AUDIO_ENCODING_SLINEAR_LE)
   1794 		sc->sc_a2c2 |= ESO_MIXREG_A2C2_SIGNED;
   1795 	else
   1796 		sc->sc_a2c2 &= ~ESO_MIXREG_A2C2_SIGNED;
   1797 	/* Unmask IRQ. */
   1798 	sc->sc_a2c2 |= ESO_MIXREG_A2C2_IRQM;
   1799 	eso_write_mixreg(sc, ESO_MIXREG_A2C2, sc->sc_a2c2);
   1800 
   1801 	/* Set up DMA controller. */
   1802 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ESO_IO_A2DMAA,
   1803 	    DMAADDR(ed));
   1804 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, ESO_IO_A2DMAC,
   1805 	    (uint8_t *)end - (uint8_t *)start);
   1806 	bus_space_write_1(sc->sc_iot, sc->sc_ioh, ESO_IO_A2DMAM,
   1807 	    ESO_IO_A2DMAM_DMAENB | ESO_IO_A2DMAM_AUTO);
   1808 
   1809 	/* Start DMA. */
   1810 	a2c1 = eso_read_mixreg(sc, ESO_MIXREG_A2C1);
   1811 	a2c1 &= ~ESO_MIXREG_A2C1_RESV0; /* Paranoia? XXX bit 5 */
   1812 	a2c1 |= ESO_MIXREG_A2C1_FIFOENB | ESO_MIXREG_A2C1_DMAENB |
   1813 	    ESO_MIXREG_A2C1_AUTO;
   1814 	eso_write_mixreg(sc, ESO_MIXREG_A2C1, a2c1);
   1815 
   1816 	return 0;
   1817 }
   1818 
   1819 static int
   1820 eso_trigger_input(void *hdl, void *start, void *end, int blksize,
   1821     void (*intr)(void *), void *arg, const audio_params_t *param)
   1822 {
   1823 	struct eso_softc *sc;
   1824 	struct eso_dma *ed;
   1825 	uint8_t actl, a1c1;
   1826 
   1827 	sc = hdl;
   1828 	DPRINTF((
   1829 	    "%s: trigger_input: start %p, end %p, blksize %d, intr %p(%p)\n",
   1830 	    device_xname(sc->sc_dev), start, end, blksize, intr, arg));
   1831 	DPRINTF(("%s: param: rate %u, encoding %u, precision %u, channels %u\n",
   1832 	    device_xname(sc->sc_dev), param->sample_rate, param->encoding,
   1833 	    param->precision, param->channels));
   1834 
   1835 	/*
   1836 	 * If we failed to configure the Audio 1 DMA controller, bail here
   1837 	 * while retaining availability of the DAC direction (in Audio 2).
   1838 	 */
   1839 	if (!sc->sc_dmac_configured)
   1840 		return EIO;
   1841 
   1842 	/* Find DMA buffer. */
   1843 	ed = eso_kva2dma(sc, start);
   1844 	DPRINTF(("%s: dmaaddr %lx\n",
   1845 	    device_xname(sc->sc_dev), (unsigned long)DMAADDR(ed)));
   1846 
   1847 	sc->sc_rintr = intr;
   1848 	sc->sc_rarg = arg;
   1849 
   1850 	/* Compute drain timeout. */
   1851 	sc->sc_rdrain = (blksize * NBBY * hz) /
   1852 	    (param->sample_rate * param->channels *
   1853 	     param->precision) + 2;	/* slop */
   1854 
   1855 	/* Set up ADC DMA converter parameters. */
   1856 	actl = eso_read_ctlreg(sc, ESO_CTLREG_ACTL);
   1857 	if (param->channels == 2) {
   1858 		actl &= ~ESO_CTLREG_ACTL_MONO;
   1859 		actl |= ESO_CTLREG_ACTL_STEREO;
   1860 	} else {
   1861 		actl &= ~ESO_CTLREG_ACTL_STEREO;
   1862 		actl |= ESO_CTLREG_ACTL_MONO;
   1863 	}
   1864 	eso_write_ctlreg(sc, ESO_CTLREG_ACTL, actl);
   1865 
   1866 	/* Set up Transfer Type: maybe move to attach time? */
   1867 	eso_write_ctlreg(sc, ESO_CTLREG_A1TT, ESO_CTLREG_A1TT_DEMAND4);
   1868 
   1869 	/* DMA transfer count reload using 2's complement. */
   1870 	blksize = -blksize;
   1871 	eso_write_ctlreg(sc, ESO_CTLREG_A1TCRLO, blksize & 0xff);
   1872 	eso_write_ctlreg(sc, ESO_CTLREG_A1TCRHI, blksize >> 8);
   1873 
   1874 	/* Set up and enable Audio 1 DMA FIFO. */
   1875 	a1c1 = ESO_CTLREG_A1C1_RESV1 | ESO_CTLREG_A1C1_FIFOENB;
   1876 	if (param->precision == 16)
   1877 		a1c1 |= ESO_CTLREG_A1C1_16BIT;
   1878 	if (param->channels == 2)
   1879 		a1c1 |= ESO_CTLREG_A1C1_STEREO;
   1880 	else
   1881 		a1c1 |= ESO_CTLREG_A1C1_MONO;
   1882 	if (param->encoding == AUDIO_ENCODING_SLINEAR_BE ||
   1883 	    param->encoding == AUDIO_ENCODING_SLINEAR_LE)
   1884 		a1c1 |= ESO_CTLREG_A1C1_SIGNED;
   1885 	eso_write_ctlreg(sc, ESO_CTLREG_A1C1, a1c1);
   1886 
   1887 	/* Set up ADC IRQ/DRQ parameters. */
   1888 	eso_write_ctlreg(sc, ESO_CTLREG_LAIC,
   1889 	    ESO_CTLREG_LAIC_PINENB | ESO_CTLREG_LAIC_EXTENB);
   1890 	eso_write_ctlreg(sc, ESO_CTLREG_DRQCTL,
   1891 	    ESO_CTLREG_DRQCTL_ENB1 | ESO_CTLREG_DRQCTL_EXTENB);
   1892 
   1893 	/* Set up and enable DMA controller. */
   1894 	bus_space_write_1(sc->sc_dmac_iot, sc->sc_dmac_ioh, ESO_DMAC_CLEAR, 0);
   1895 	bus_space_write_1(sc->sc_dmac_iot, sc->sc_dmac_ioh, ESO_DMAC_MASK,
   1896 	    ESO_DMAC_MASK_MASK);
   1897 	bus_space_write_1(sc->sc_dmac_iot, sc->sc_dmac_ioh, ESO_DMAC_MODE,
   1898 	    DMA37MD_WRITE | DMA37MD_LOOP | DMA37MD_DEMAND);
   1899 	bus_space_write_4(sc->sc_dmac_iot, sc->sc_dmac_ioh, ESO_DMAC_DMAA,
   1900 	    DMAADDR(ed));
   1901 	bus_space_write_2(sc->sc_dmac_iot, sc->sc_dmac_ioh, ESO_DMAC_DMAC,
   1902 	    (uint8_t *)end - (uint8_t *)start - 1);
   1903 	bus_space_write_1(sc->sc_dmac_iot, sc->sc_dmac_ioh, ESO_DMAC_MASK, 0);
   1904 
   1905 	/* Start DMA. */
   1906 	eso_write_ctlreg(sc, ESO_CTLREG_A1C2,
   1907 	    ESO_CTLREG_A1C2_DMAENB | ESO_CTLREG_A1C2_READ |
   1908 	    ESO_CTLREG_A1C2_AUTO | ESO_CTLREG_A1C2_ADC);
   1909 
   1910 	return 0;
   1911 }
   1912 
   1913 
   1914 static void
   1915 eso_get_locks(void *addr, kmutex_t **intr, kmutex_t **thread)
   1916 {
   1917 	struct eso_softc *sc;
   1918 
   1919 	sc = addr;
   1920 	*intr = &sc->sc_intr_lock;
   1921 	*thread = &sc->sc_lock;
   1922 }
   1923 
   1924 /*
   1925  * Mixer utility functions.
   1926  */
   1927 static int
   1928 eso_set_recsrc(struct eso_softc *sc, unsigned int recsrc)
   1929 {
   1930 	mixer_devinfo_t di;
   1931 	int i;
   1932 
   1933 	KASSERT(mutex_owned(&sc->sc_intr_lock));
   1934 
   1935 	di.index = ESO_RECORD_SOURCE;
   1936 	if (eso_query_devinfo(sc, &di) != 0)
   1937 		panic("eso_set_recsrc: eso_query_devinfo failed");
   1938 
   1939 	for (i = 0; i < di.un.e.num_mem; i++) {
   1940 		if (recsrc == di.un.e.member[i].ord) {
   1941 			eso_write_mixreg(sc, ESO_MIXREG_ERS, recsrc);
   1942 			sc->sc_recsrc = recsrc;
   1943 			return 0;
   1944 		}
   1945 	}
   1946 
   1947 	return EINVAL;
   1948 }
   1949 
   1950 static int
   1951 eso_set_monooutsrc(struct eso_softc *sc, unsigned int monooutsrc)
   1952 {
   1953 	mixer_devinfo_t di;
   1954 	int i;
   1955 	uint8_t mpm;
   1956 
   1957 	KASSERT(mutex_owned(&sc->sc_intr_lock));
   1958 
   1959 	di.index = ESO_MONOOUT_SOURCE;
   1960 	if (eso_query_devinfo(sc, &di) != 0)
   1961 		panic("eso_set_monooutsrc: eso_query_devinfo failed");
   1962 
   1963 	for (i = 0; i < di.un.e.num_mem; i++) {
   1964 		if (monooutsrc == di.un.e.member[i].ord) {
   1965 			mpm = eso_read_mixreg(sc, ESO_MIXREG_MPM);
   1966 			mpm &= ~ESO_MIXREG_MPM_MOMASK;
   1967 			mpm |= monooutsrc;
   1968 			eso_write_mixreg(sc, ESO_MIXREG_MPM, mpm);
   1969 			sc->sc_monooutsrc = monooutsrc;
   1970 			return 0;
   1971 		}
   1972 	}
   1973 
   1974 	return EINVAL;
   1975 }
   1976 
   1977 static int
   1978 eso_set_monoinbypass(struct eso_softc *sc, unsigned int monoinbypass)
   1979 {
   1980 	mixer_devinfo_t di;
   1981 	int i;
   1982 	uint8_t mpm;
   1983 
   1984 	KASSERT(mutex_owned(&sc->sc_intr_lock));
   1985 
   1986 	di.index = ESO_MONOIN_BYPASS;
   1987 	if (eso_query_devinfo(sc, &di) != 0)
   1988 		panic("eso_set_monoinbypass: eso_query_devinfo failed");
   1989 
   1990 	for (i = 0; i < di.un.e.num_mem; i++) {
   1991 		if (monoinbypass == di.un.e.member[i].ord) {
   1992 			mpm = eso_read_mixreg(sc, ESO_MIXREG_MPM);
   1993 			mpm &= ~(ESO_MIXREG_MPM_MOMASK | ESO_MIXREG_MPM_RESV0);
   1994 			mpm |= (monoinbypass ? ESO_MIXREG_MPM_MIBYPASS : 0);
   1995 			eso_write_mixreg(sc, ESO_MIXREG_MPM, mpm);
   1996 			sc->sc_monoinbypass = monoinbypass;
   1997 			return 0;
   1998 		}
   1999 	}
   2000 
   2001 	return EINVAL;
   2002 }
   2003 
   2004 static int
   2005 eso_set_preamp(struct eso_softc *sc, unsigned int preamp)
   2006 {
   2007 	mixer_devinfo_t di;
   2008 	int i;
   2009 	uint8_t mpm;
   2010 
   2011 	KASSERT(mutex_owned(&sc->sc_intr_lock));
   2012 
   2013 	di.index = ESO_MIC_PREAMP;
   2014 	if (eso_query_devinfo(sc, &di) != 0)
   2015 		panic("eso_set_preamp: eso_query_devinfo failed");
   2016 
   2017 	for (i = 0; i < di.un.e.num_mem; i++) {
   2018 		if (preamp == di.un.e.member[i].ord) {
   2019 			mpm = eso_read_mixreg(sc, ESO_MIXREG_MPM);
   2020 			mpm &= ~(ESO_MIXREG_MPM_PREAMP | ESO_MIXREG_MPM_RESV0);
   2021 			mpm |= (preamp ? ESO_MIXREG_MPM_PREAMP : 0);
   2022 			eso_write_mixreg(sc, ESO_MIXREG_MPM, mpm);
   2023 			sc->sc_preamp = preamp;
   2024 			return 0;
   2025 		}
   2026 	}
   2027 
   2028 	return EINVAL;
   2029 }
   2030 
   2031 /*
   2032  * Reload Master Volume and Mute values in softc from mixer; used when
   2033  * those have previously been invalidated by use of hardware volume controls.
   2034  */
   2035 static void
   2036 eso_reload_master_vol(struct eso_softc *sc)
   2037 {
   2038 	uint8_t mv;
   2039 
   2040 	KASSERT(mutex_owned(&sc->sc_intr_lock));
   2041 
   2042 	mv = eso_read_mixreg(sc, ESO_MIXREG_LMVM);
   2043 	sc->sc_gain[ESO_MASTER_VOL][ESO_LEFT] =
   2044 	    (mv & ~ESO_MIXREG_LMVM_MUTE) << 2;
   2045 	mv = eso_read_mixreg(sc, ESO_MIXREG_LMVM);
   2046 	sc->sc_gain[ESO_MASTER_VOL][ESO_RIGHT] =
   2047 	    (mv & ~ESO_MIXREG_RMVM_MUTE) << 2;
   2048 	/* Currently both channels are muted simultaneously; either is OK. */
   2049 	sc->sc_mvmute = (mv & ESO_MIXREG_RMVM_MUTE) != 0;
   2050 }
   2051 
   2052 static void
   2053 eso_set_gain(struct eso_softc *sc, unsigned int port)
   2054 {
   2055 	uint8_t mixreg, tmp;
   2056 
   2057 	KASSERT(mutex_owned(&sc->sc_intr_lock));
   2058 
   2059 	switch (port) {
   2060 	case ESO_DAC_PLAY_VOL:
   2061 		mixreg = ESO_MIXREG_PVR_A2;
   2062 		break;
   2063 	case ESO_MIC_PLAY_VOL:
   2064 		mixreg = ESO_MIXREG_PVR_MIC;
   2065 		break;
   2066 	case ESO_LINE_PLAY_VOL:
   2067 		mixreg = ESO_MIXREG_PVR_LINE;
   2068 		break;
   2069 	case ESO_SYNTH_PLAY_VOL:
   2070 		mixreg = ESO_MIXREG_PVR_SYNTH;
   2071 		break;
   2072 	case ESO_CD_PLAY_VOL:
   2073 		mixreg = ESO_MIXREG_PVR_CD;
   2074 		break;
   2075 	case ESO_AUXB_PLAY_VOL:
   2076 		mixreg = ESO_MIXREG_PVR_AUXB;
   2077 		break;
   2078 
   2079 	case ESO_DAC_REC_VOL:
   2080 		mixreg = ESO_MIXREG_RVR_A2;
   2081 		break;
   2082 	case ESO_MIC_REC_VOL:
   2083 		mixreg = ESO_MIXREG_RVR_MIC;
   2084 		break;
   2085 	case ESO_LINE_REC_VOL:
   2086 		mixreg = ESO_MIXREG_RVR_LINE;
   2087 		break;
   2088 	case ESO_SYNTH_REC_VOL:
   2089 		mixreg = ESO_MIXREG_RVR_SYNTH;
   2090 		break;
   2091 	case ESO_CD_REC_VOL:
   2092 		mixreg = ESO_MIXREG_RVR_CD;
   2093 		break;
   2094 	case ESO_AUXB_REC_VOL:
   2095 		mixreg = ESO_MIXREG_RVR_AUXB;
   2096 		break;
   2097 	case ESO_MONO_PLAY_VOL:
   2098 		mixreg = ESO_MIXREG_PVR_MONO;
   2099 		break;
   2100 	case ESO_MONO_REC_VOL:
   2101 		mixreg = ESO_MIXREG_RVR_MONO;
   2102 		break;
   2103 
   2104 	case ESO_PCSPEAKER_VOL:
   2105 		/* Special case - only 3-bit, mono, and reserved bits. */
   2106 		tmp = eso_read_mixreg(sc, ESO_MIXREG_PCSVR);
   2107 		tmp &= ESO_MIXREG_PCSVR_RESV;
   2108 		/* Map bits 7:5 -> 2:0. */
   2109 		tmp |= (sc->sc_gain[port][ESO_LEFT] >> 5);
   2110 		eso_write_mixreg(sc, ESO_MIXREG_PCSVR, tmp);
   2111 		return;
   2112 
   2113 	case ESO_MASTER_VOL:
   2114 		/* Special case - separate regs, and 6-bit precision. */
   2115 		/* Map bits 7:2 -> 5:0, reflect mute settings. */
   2116 		eso_write_mixreg(sc, ESO_MIXREG_LMVM,
   2117 		    (sc->sc_gain[port][ESO_LEFT] >> 2) |
   2118 		    (sc->sc_mvmute ? ESO_MIXREG_LMVM_MUTE : 0x00));
   2119 		eso_write_mixreg(sc, ESO_MIXREG_RMVM,
   2120 		    (sc->sc_gain[port][ESO_RIGHT] >> 2) |
   2121 		    (sc->sc_mvmute ? ESO_MIXREG_RMVM_MUTE : 0x00));
   2122 		return;
   2123 
   2124 	case ESO_SPATIALIZER:
   2125 		/* Special case - only `mono', and higher precision. */
   2126 		eso_write_mixreg(sc, ESO_MIXREG_SPATLVL,
   2127 		    sc->sc_gain[port][ESO_LEFT]);
   2128 		return;
   2129 
   2130 	case ESO_RECORD_VOL:
   2131 		/* Very Special case, controller register. */
   2132 		eso_write_ctlreg(sc, ESO_CTLREG_RECLVL,ESO_4BIT_GAIN_TO_STEREO(
   2133 		   sc->sc_gain[port][ESO_LEFT], sc->sc_gain[port][ESO_RIGHT]));
   2134 		return;
   2135 
   2136 	default:
   2137 #ifdef DIAGNOSTIC
   2138 		panic("eso_set_gain: bad port %u", port);
   2139 		/* NOTREACHED */
   2140 #else
   2141 		return;
   2142 #endif
   2143 	}
   2144 
   2145 	eso_write_mixreg(sc, mixreg, ESO_4BIT_GAIN_TO_STEREO(
   2146 	    sc->sc_gain[port][ESO_LEFT], sc->sc_gain[port][ESO_RIGHT]));
   2147 }
   2148