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eso.c revision 1.18
      1 /*	$NetBSD: eso.c,v 1.18 2000/03/22 14:37:43 kleink Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1999, 2000 Klaus J. Klein
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. The name of the author may not be used to endorse or promote products
     16  *    derived from this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     23  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     24  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     25  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     26  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     28  * SUCH DAMAGE.
     29  */
     30 
     31 /*
     32  * ESS Technology Inc. Solo-1 PCI AudioDrive (ES1938/1946) device driver.
     33  */
     34 
     35 #include "mpu.h"
     36 
     37 #include <sys/param.h>
     38 #include <sys/systm.h>
     39 #include <sys/kernel.h>
     40 #include <sys/malloc.h>
     41 #include <sys/device.h>
     42 #include <sys/proc.h>
     43 
     44 #include <dev/pci/pcidevs.h>
     45 #include <dev/pci/pcivar.h>
     46 
     47 #include <sys/audioio.h>
     48 #include <dev/audio_if.h>
     49 #include <dev/midi_if.h>
     50 
     51 #include <dev/mulaw.h>
     52 #include <dev/auconv.h>
     53 
     54 #include <dev/ic/mpuvar.h>
     55 #include <dev/ic/i8237reg.h>
     56 #include <dev/pci/esoreg.h>
     57 #include <dev/pci/esovar.h>
     58 
     59 #include <machine/bus.h>
     60 #include <machine/intr.h>
     61 
     62 #if defined(AUDIO_DEBUG) || defined(DEBUG)
     63 #define DPRINTF(x) printf x
     64 #else
     65 #define DPRINTF(x)
     66 #endif
     67 
     68 struct eso_dma {
     69 	bus_dma_tag_t		ed_dmat;
     70 	bus_dmamap_t		ed_map;
     71 	caddr_t			ed_addr;
     72 	bus_dma_segment_t	ed_segs[1];
     73 	int			ed_nsegs;
     74 	size_t			ed_size;
     75 	struct eso_dma *	ed_next;
     76 };
     77 
     78 #define KVADDR(dma)	((void *)(dma)->ed_addr)
     79 #define DMAADDR(dma)	((dma)->ed_map->dm_segs[0].ds_addr)
     80 
     81 /* Autoconfiguration interface */
     82 static int eso_match __P((struct device *, struct cfdata *, void *));
     83 static void eso_attach __P((struct device *, struct device *, void *));
     84 static void eso_defer __P((struct device *));
     85 
     86 struct cfattach eso_ca = {
     87 	sizeof (struct eso_softc), eso_match, eso_attach
     88 };
     89 
     90 /* PCI interface */
     91 static int eso_intr __P((void *));
     92 
     93 /* MI audio layer interface */
     94 static int	eso_open __P((void *, int));
     95 static void	eso_close __P((void *));
     96 static int	eso_query_encoding __P((void *, struct audio_encoding *));
     97 static int	eso_set_params __P((void *, int, int, struct audio_params *,
     98 		    struct audio_params *));
     99 static int	eso_round_blocksize __P((void *, int));
    100 static int	eso_halt_output __P((void *));
    101 static int	eso_halt_input __P((void *));
    102 static int	eso_getdev __P((void *, struct audio_device *));
    103 static int	eso_set_port __P((void *, mixer_ctrl_t *));
    104 static int	eso_get_port __P((void *, mixer_ctrl_t *));
    105 static int	eso_query_devinfo __P((void *, mixer_devinfo_t *));
    106 static void *	eso_allocm __P((void *, int, size_t, int, int));
    107 static void	eso_freem __P((void *, void *, int));
    108 static size_t	eso_round_buffersize __P((void *, int, size_t));
    109 static int	eso_mappage __P((void *, void *, int, int));
    110 static int	eso_get_props __P((void *));
    111 static int	eso_trigger_output __P((void *, void *, void *, int,
    112 		    void (*)(void *), void *, struct audio_params *));
    113 static int	eso_trigger_input __P((void *, void *, void *, int,
    114 		    void (*)(void *), void *, struct audio_params *));
    115 
    116 static struct audio_hw_if eso_hw_if = {
    117 	eso_open,
    118 	eso_close,
    119 	NULL,			/* drain */
    120 	eso_query_encoding,
    121 	eso_set_params,
    122 	eso_round_blocksize,
    123 	NULL,			/* commit_settings */
    124 	NULL,			/* init_output */
    125 	NULL,			/* init_input */
    126 	NULL,			/* start_output */
    127 	NULL,			/* start_input */
    128 	eso_halt_output,
    129 	eso_halt_input,
    130 	NULL,			/* speaker_ctl */
    131 	eso_getdev,
    132 	NULL,			/* setfd */
    133 	eso_set_port,
    134 	eso_get_port,
    135 	eso_query_devinfo,
    136 	eso_allocm,
    137 	eso_freem,
    138 	eso_round_buffersize,
    139 	eso_mappage,
    140 	eso_get_props,
    141 	eso_trigger_output,
    142 	eso_trigger_input
    143 };
    144 
    145 static const char * const eso_rev2model[] = {
    146 	"ES1938",
    147 	"ES1946",
    148 	"ES1946 Revision E"
    149 };
    150 
    151 
    152 /*
    153  * Utility routines
    154  */
    155 /* Register access etc. */
    156 static uint8_t	eso_read_ctlreg __P((struct eso_softc *, uint8_t));
    157 static uint8_t	eso_read_mixreg __P((struct eso_softc *, uint8_t));
    158 static uint8_t	eso_read_rdr __P((struct eso_softc *));
    159 static void	eso_reload_master_vol __P((struct eso_softc *));
    160 static int	eso_reset __P((struct eso_softc *));
    161 static void	eso_set_gain __P((struct eso_softc *, unsigned int));
    162 static int	eso_set_monooutsrc __P((struct eso_softc *, unsigned int));
    163 static int	eso_set_recsrc __P((struct eso_softc *, unsigned int));
    164 static void	eso_write_cmd __P((struct eso_softc *, uint8_t));
    165 static void	eso_write_ctlreg __P((struct eso_softc *, uint8_t, uint8_t));
    166 static void	eso_write_mixreg __P((struct eso_softc *, uint8_t, uint8_t));
    167 /* DMA memory allocation */
    168 static int	eso_allocmem __P((struct eso_softc *, size_t, size_t, size_t,
    169 		    int, struct eso_dma *));
    170 static void	eso_freemem __P((struct eso_dma *));
    171 
    172 
    173 static int
    174 eso_match(parent, match, aux)
    175 	struct device *parent;
    176 	struct cfdata *match;
    177 	void *aux;
    178 {
    179 	struct pci_attach_args *pa = aux;
    180 
    181 	if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_ESSTECH &&
    182 	    PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ESSTECH_SOLO1)
    183 		return (1);
    184 
    185 	return (0);
    186 }
    187 
    188 static void
    189 eso_attach(parent, self, aux)
    190 	struct device *parent, *self;
    191 	void *aux;
    192 {
    193 	struct eso_softc *sc = (struct eso_softc *)self;
    194 	struct pci_attach_args *pa = aux;
    195 	struct audio_attach_args aa;
    196 	pci_intr_handle_t ih;
    197 	bus_addr_t vcbase;
    198 	const char *intrstring;
    199 	int idx;
    200 	uint8_t a2mode, mvctl;
    201 
    202 	sc->sc_revision = PCI_REVISION(pa->pa_class);
    203 
    204 	printf(": ESS Solo-1 PCI AudioDrive ");
    205 	if (sc->sc_revision <
    206 	    sizeof (eso_rev2model) / sizeof (eso_rev2model[0]))
    207 		printf("%s\n", eso_rev2model[sc->sc_revision]);
    208 	else
    209 		printf("(unknown rev. 0x%02x)\n", sc->sc_revision);
    210 
    211 	/* Map I/O registers. */
    212 	if (pci_mapreg_map(pa, ESO_PCI_BAR_IO, PCI_MAPREG_TYPE_IO, 0,
    213 	    &sc->sc_iot, &sc->sc_ioh, NULL, NULL)) {
    214 		printf("%s: can't map I/O space\n", sc->sc_dev.dv_xname);
    215 		return;
    216 	}
    217 	if (pci_mapreg_map(pa, ESO_PCI_BAR_SB, PCI_MAPREG_TYPE_IO, 0,
    218 	    &sc->sc_sb_iot, &sc->sc_sb_ioh, NULL, NULL)) {
    219 		printf("%s: can't map SB I/O space\n", sc->sc_dev.dv_xname);
    220 		return;
    221 	}
    222 	if (pci_mapreg_map(pa, ESO_PCI_BAR_VC, PCI_MAPREG_TYPE_IO, 0,
    223 	    &sc->sc_dmac_iot, &sc->sc_dmac_ioh, &vcbase, &sc->sc_vcsize)) {
    224 		printf("%s: can't map VC I/O space\n", sc->sc_dev.dv_xname);
    225 		/* Don't bail out yet: we can map it later, see below. */
    226 		vcbase = 0;
    227 		sc->sc_vcsize = 0x10; /* From the data sheet. */
    228 	}
    229 	if (pci_mapreg_map(pa, ESO_PCI_BAR_MPU, PCI_MAPREG_TYPE_IO, 0,
    230 	    &sc->sc_mpu_iot, &sc->sc_mpu_ioh, NULL, NULL)) {
    231 		printf("%s: can't map MPU I/O space\n", sc->sc_dev.dv_xname);
    232 		return;
    233 	}
    234 	if (pci_mapreg_map(pa, ESO_PCI_BAR_GAME, PCI_MAPREG_TYPE_IO, 0,
    235 	    &sc->sc_game_iot, &sc->sc_game_ioh, NULL, NULL)) {
    236 		printf("%s: can't map Game I/O space\n", sc->sc_dev.dv_xname);
    237 		return;
    238 	}
    239 
    240 	sc->sc_dmat = pa->pa_dmat;
    241 	sc->sc_dmas = NULL;
    242 	sc->sc_dmac_configured = 0;
    243 
    244 	/* Enable bus mastering. */
    245 	pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
    246 	    pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG) |
    247 	    PCI_COMMAND_MASTER_ENABLE);
    248 
    249 	/* Reset the device; bail out upon failure. */
    250 	if (eso_reset(sc) != 0) {
    251 		printf("%s: can't reset\n", sc->sc_dev.dv_xname);
    252 		return;
    253 	}
    254 
    255 	/* Select the DMA/IRQ policy: DDMA, ISA IRQ emulation disabled. */
    256 	pci_conf_write(pa->pa_pc, pa->pa_tag, ESO_PCI_S1C,
    257 	    pci_conf_read(pa->pa_pc, pa->pa_tag, ESO_PCI_S1C) &
    258 	    ~(ESO_PCI_S1C_IRQP_MASK | ESO_PCI_S1C_DMAP_MASK));
    259 
    260 	/* Enable the relevant (DMA) interrupts. */
    261 	bus_space_write_1(sc->sc_iot, sc->sc_ioh, ESO_IO_IRQCTL,
    262 	    ESO_IO_IRQCTL_A1IRQ | ESO_IO_IRQCTL_A2IRQ | ESO_IO_IRQCTL_HVIRQ |
    263 	    ESO_IO_IRQCTL_MPUIRQ);
    264 
    265 	/* Set up A1's sample rate generator for new-style parameters. */
    266 	a2mode = eso_read_mixreg(sc, ESO_MIXREG_A2MODE);
    267 	a2mode |= ESO_MIXREG_A2MODE_NEWA1 | ESO_MIXREG_A2MODE_ASYNC;
    268 	eso_write_mixreg(sc, ESO_MIXREG_A2MODE, a2mode);
    269 
    270 	/* Slave Master Volume to Hardware Volume Control Counter, unask IRQ. */
    271 	mvctl = eso_read_mixreg(sc, ESO_MIXREG_MVCTL);
    272 	mvctl &= ~ESO_MIXREG_MVCTL_SPLIT;
    273 	mvctl |= ESO_MIXREG_MVCTL_HVIRQM;
    274 	eso_write_mixreg(sc, ESO_MIXREG_MVCTL, mvctl);
    275 
    276 	/* Set mixer regs to something reasonable, needs work. */
    277 	sc->sc_recsrc = ESO_MIXREG_ERS_LINE;
    278 	sc->sc_monooutsrc = ESO_MIXREG_MPM_MOMUTE;
    279 	sc->sc_recmon = sc->sc_spatializer = sc->sc_mvmute = 0;
    280 	for (idx = 0; idx < ESO_NGAINDEVS; idx++) {
    281 		int v;
    282 
    283 		switch (idx) {
    284  		case ESO_MIC_PLAY_VOL:
    285 		case ESO_LINE_PLAY_VOL:
    286 		case ESO_CD_PLAY_VOL:
    287 		case ESO_MONO_PLAY_VOL:
    288 		case ESO_AUXB_PLAY_VOL:
    289 		case ESO_DAC_REC_VOL:
    290 		case ESO_LINE_REC_VOL:
    291 		case ESO_SYNTH_REC_VOL:
    292 		case ESO_CD_REC_VOL:
    293 		case ESO_MONO_REC_VOL:
    294 		case ESO_AUXB_REC_VOL:
    295 		case ESO_SPATIALIZER:
    296 			v = 0;
    297 			break;
    298 		case ESO_MASTER_VOL:
    299 			v = ESO_GAIN_TO_6BIT(AUDIO_MAX_GAIN / 2);
    300 			break;
    301 		default:
    302 			v = ESO_GAIN_TO_4BIT(AUDIO_MAX_GAIN / 2);
    303 			break;
    304 		}
    305 		sc->sc_gain[idx][ESO_LEFT] = sc->sc_gain[idx][ESO_RIGHT] = v;
    306 		eso_set_gain(sc, idx);
    307 	}
    308 	eso_set_recsrc(sc, ESO_MIXREG_ERS_MIC);
    309 
    310 	/* Map and establish the interrupt. */
    311 	if (pci_intr_map(pa->pa_pc, pa->pa_intrtag, pa->pa_intrpin,
    312 	    pa->pa_intrline, &ih)) {
    313 		printf("%s: couldn't map interrupt\n", sc->sc_dev.dv_xname);
    314 		return;
    315 	}
    316 	intrstring = pci_intr_string(pa->pa_pc, ih);
    317 	sc->sc_ih  = pci_intr_establish(pa->pa_pc, ih, IPL_AUDIO, eso_intr, sc);
    318 	if (sc->sc_ih == NULL) {
    319 		printf("%s: couldn't establish interrupt",
    320 		    sc->sc_dev.dv_xname);
    321 		if (intrstring != NULL)
    322 			printf(" at %s", intrstring);
    323 		printf("\n");
    324 		return;
    325 	}
    326 	printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstring);
    327 
    328 	/*
    329 	 * Set up the DDMA Control register; a suitable I/O region has been
    330 	 * supposedly mapped in the VC base address register.
    331 	 *
    332 	 * The Solo-1 has an ... interesting silicon bug that causes it to
    333 	 * not respond to I/O space accesses to the Audio 1 DMA controller
    334 	 * if the latter's mapping base address is aligned on a 1K boundary.
    335 	 * As a consequence, it is quite possible for the mapping provided
    336 	 * in the VC BAR to be useless.  To work around this, we defer this
    337 	 * part until all autoconfiguration on our parent bus is completed
    338 	 * and then try to map it ourselves in fulfillment of the constraint.
    339 	 *
    340 	 * According to the register map we may write to the low 16 bits
    341 	 * only, but experimenting has shown we're safe.
    342 	 * -kjk
    343 	 */
    344 	if (ESO_VALID_DDMAC_BASE(vcbase)) {
    345 		pci_conf_write(pa->pa_pc, pa->pa_tag, ESO_PCI_DDMAC,
    346 		    vcbase | ESO_PCI_DDMAC_DE);
    347 		sc->sc_dmac_configured = 1;
    348 
    349 		printf("%s: mapping Audio 1 DMA using VC I/O space at 0x%lx\n",
    350 		    sc->sc_dev.dv_xname, (unsigned long)vcbase);
    351 	} else {
    352 		DPRINTF(("%s: VC I/O space at 0x%lx not suitable, deferring\n",
    353 		    sc->sc_dev.dv_xname, (unsigned long)vcbase));
    354 		sc->sc_pa = *pa;
    355 		config_defer(self, eso_defer);
    356 	}
    357 
    358 	audio_attach_mi(&eso_hw_if, sc, &sc->sc_dev);
    359 
    360 	aa.type = AUDIODEV_TYPE_OPL;
    361 	aa.hwif = NULL;
    362 	aa.hdl = NULL;
    363 	(void)config_found(&sc->sc_dev, &aa, audioprint);
    364 
    365 	aa.type = AUDIODEV_TYPE_MPU;
    366 	aa.hwif = NULL;
    367 	aa.hdl = NULL;
    368 	sc->sc_mpudev = config_found(&sc->sc_dev, &aa, audioprint);
    369 	if (sc->sc_mpudev != NULL) {
    370 		/* Unmask the MPU irq. */
    371 		mvctl = eso_read_mixreg(sc, ESO_MIXREG_MVCTL);
    372 		mvctl |= ESO_MIXREG_MVCTL_MPUIRQM;
    373 		eso_write_mixreg(sc, ESO_MIXREG_MVCTL, mvctl);
    374 	}
    375 }
    376 
    377 static void
    378 eso_defer(self)
    379 	struct device *self;
    380 {
    381 	struct eso_softc *sc = (struct eso_softc *)self;
    382 	struct pci_attach_args *pa = &sc->sc_pa;
    383 	bus_addr_t addr, start;
    384 
    385 	printf("%s: ", sc->sc_dev.dv_xname);
    386 
    387 	/*
    388 	 * This is outright ugly, but since we must not make assumptions
    389 	 * on the underlying allocator's behaviour it's the most straight-
    390 	 * forward way to implement it.  Note that we skip over the first
    391 	 * 1K region, which is typically occupied by an attached ISA bus.
    392 	 */
    393 	for (start = 0x0400; start < 0xffff; start += 0x0400) {
    394 		if (bus_space_alloc(sc->sc_iot,
    395 		    start + sc->sc_vcsize, start + 0x0400 - 1,
    396 		    sc->sc_vcsize, sc->sc_vcsize, 0, 0, &addr,
    397 		    &sc->sc_dmac_ioh) != 0)
    398 			continue;
    399 
    400 		pci_conf_write(pa->pa_pc, pa->pa_tag, ESO_PCI_DDMAC,
    401 		    addr | ESO_PCI_DDMAC_DE);
    402 		sc->sc_dmac_iot = sc->sc_iot;
    403 		sc->sc_dmac_configured = 1;
    404 		printf("mapping Audio 1 DMA using I/O space at 0x%lx\n",
    405 		    (unsigned long)addr);
    406 
    407 		return;
    408 	}
    409 
    410 	printf("can't map Audio 1 DMA into I/O space\n");
    411 }
    412 
    413 static void
    414 eso_write_cmd(sc, cmd)
    415 	struct eso_softc *sc;
    416 	uint8_t cmd;
    417 {
    418 	int i;
    419 
    420 	/* Poll for busy indicator to become clear. */
    421 	for (i = 0; i < ESO_WDR_TIMEOUT; i++) {
    422 		if ((bus_space_read_1(sc->sc_sb_iot, sc->sc_sb_ioh, ESO_SB_RSR)
    423 		    & ESO_SB_RSR_BUSY) == 0) {
    424 			bus_space_write_1(sc->sc_sb_iot, sc->sc_sb_ioh,
    425 			    ESO_SB_WDR, cmd);
    426 			return;
    427 		} else {
    428 			delay(10);
    429 		}
    430 	}
    431 
    432 	printf("%s: WDR timeout\n", sc->sc_dev.dv_xname);
    433 	return;
    434 }
    435 
    436 /* Write to a controller register */
    437 static void
    438 eso_write_ctlreg(sc, reg, val)
    439 	struct eso_softc *sc;
    440 	uint8_t reg, val;
    441 {
    442 
    443 	/* DPRINTF(("ctlreg 0x%02x = 0x%02x\n", reg, val)); */
    444 
    445 	eso_write_cmd(sc, reg);
    446 	eso_write_cmd(sc, val);
    447 }
    448 
    449 /* Read out the Read Data Register */
    450 static uint8_t
    451 eso_read_rdr(sc)
    452 	struct eso_softc *sc;
    453 {
    454 	int i;
    455 
    456 	for (i = 0; i < ESO_RDR_TIMEOUT; i++) {
    457 		if (bus_space_read_1(sc->sc_sb_iot, sc->sc_sb_ioh,
    458 		    ESO_SB_RBSR) & ESO_SB_RBSR_RDAV) {
    459 			return (bus_space_read_1(sc->sc_sb_iot,
    460 			    sc->sc_sb_ioh, ESO_SB_RDR));
    461 		} else {
    462 			delay(10);
    463 		}
    464 	}
    465 
    466 	printf("%s: RDR timeout\n", sc->sc_dev.dv_xname);
    467 	return (-1);
    468 }
    469 
    470 
    471 static uint8_t
    472 eso_read_ctlreg(sc, reg)
    473 	struct eso_softc *sc;
    474 	uint8_t reg;
    475 {
    476 
    477 	eso_write_cmd(sc, ESO_CMD_RCR);
    478 	eso_write_cmd(sc, reg);
    479 	return (eso_read_rdr(sc));
    480 }
    481 
    482 static void
    483 eso_write_mixreg(sc, reg, val)
    484 	struct eso_softc *sc;
    485 	uint8_t reg, val;
    486 {
    487 	int s;
    488 
    489 	/* DPRINTF(("mixreg 0x%02x = 0x%02x\n", reg, val)); */
    490 
    491 	s = splaudio();
    492 	bus_space_write_1(sc->sc_sb_iot, sc->sc_sb_ioh, ESO_SB_MIXERADDR, reg);
    493 	bus_space_write_1(sc->sc_sb_iot, sc->sc_sb_ioh, ESO_SB_MIXERDATA, val);
    494 	splx(s);
    495 }
    496 
    497 static uint8_t
    498 eso_read_mixreg(sc, reg)
    499 	struct eso_softc *sc;
    500 	uint8_t reg;
    501 {
    502 	int s;
    503 	uint8_t val;
    504 
    505 	s = splaudio();
    506 	bus_space_write_1(sc->sc_sb_iot, sc->sc_sb_ioh, ESO_SB_MIXERADDR, reg);
    507 	val = bus_space_read_1(sc->sc_sb_iot, sc->sc_sb_ioh, ESO_SB_MIXERDATA);
    508 	splx(s);
    509 
    510 	return (val);
    511 }
    512 
    513 static int
    514 eso_intr(hdl)
    515 	void *hdl;
    516 {
    517 	struct eso_softc *sc = hdl;
    518 	uint8_t irqctl;
    519 
    520 	irqctl = bus_space_read_1(sc->sc_iot, sc->sc_ioh, ESO_IO_IRQCTL);
    521 
    522 	/* If it wasn't ours, that's all she wrote. */
    523 	if ((irqctl & (ESO_IO_IRQCTL_A1IRQ | ESO_IO_IRQCTL_A2IRQ |
    524 	    ESO_IO_IRQCTL_HVIRQ | ESO_IO_IRQCTL_MPUIRQ)) == 0)
    525 		return (0);
    526 
    527 	if (irqctl & ESO_IO_IRQCTL_A1IRQ) {
    528 		/* Clear interrupt. */
    529 		(void)bus_space_read_1(sc->sc_sb_iot, sc->sc_sb_ioh,
    530 		    ESO_SB_RBSR);
    531 
    532 		if (sc->sc_rintr)
    533 			sc->sc_rintr(sc->sc_rarg);
    534 		else
    535 			wakeup(&sc->sc_rintr);
    536 	}
    537 
    538 	if (irqctl & ESO_IO_IRQCTL_A2IRQ) {
    539 		/*
    540 		 * Clear the A2 IRQ latch: the cached value reflects the
    541 		 * current DAC settings with the IRQ latch bit not set.
    542 		 */
    543 		eso_write_mixreg(sc, ESO_MIXREG_A2C2, sc->sc_a2c2);
    544 
    545 		if (sc->sc_pintr)
    546 			sc->sc_pintr(sc->sc_parg);
    547 		else
    548 			wakeup(&sc->sc_pintr);
    549 	}
    550 
    551 	if (irqctl & ESO_IO_IRQCTL_HVIRQ) {
    552 		/* Clear interrupt. */
    553 		eso_write_mixreg(sc, ESO_MIXREG_CHVIR, ESO_MIXREG_CHVIR_CHVIR);
    554 
    555 		/*
    556 		 * Raise a flag to cause a lazy update of the in-softc gain
    557 		 * values the next time the software mixer is read to keep
    558 		 * interrupt service cost low.  ~0 cannot occur otherwise
    559 		 * as the master volume has a precision of 6 bits only.
    560 		 */
    561 		sc->sc_gain[ESO_MASTER_VOL][ESO_LEFT] = (uint8_t)~0;
    562 	}
    563 
    564 #if NMPU > 0
    565 	if ((irqctl & ESO_IO_IRQCTL_MPUIRQ) && sc->sc_mpudev != NULL)
    566 		mpu_intr(sc->sc_mpudev);
    567 #endif
    568 
    569 	return (1);
    570 }
    571 
    572 /* Perform a software reset, including DMA FIFOs. */
    573 static int
    574 eso_reset(sc)
    575 	struct eso_softc *sc;
    576 {
    577 	int i;
    578 
    579 	bus_space_write_1(sc->sc_sb_iot, sc->sc_sb_ioh, ESO_SB_RESET,
    580 	    ESO_SB_RESET_SW | ESO_SB_RESET_FIFO);
    581 	/* `Delay' suggested in the data sheet. */
    582 	(void)bus_space_read_1(sc->sc_sb_iot, sc->sc_sb_ioh, ESO_SB_STATUS);
    583 	bus_space_write_1(sc->sc_sb_iot, sc->sc_sb_ioh, ESO_SB_RESET, 0);
    584 
    585 	/* Wait for reset to take effect. */
    586 	for (i = 0; i < ESO_RESET_TIMEOUT; i++) {
    587 		/* Poll for data to become available. */
    588 		if ((bus_space_read_1(sc->sc_sb_iot, sc->sc_sb_ioh,
    589 		    ESO_SB_RBSR) & ESO_SB_RBSR_RDAV) != 0 &&
    590 		    bus_space_read_1(sc->sc_sb_iot, sc->sc_sb_ioh,
    591 			ESO_SB_RDR) == ESO_SB_RDR_RESETMAGIC) {
    592 
    593 			/* Activate Solo-1 extension commands. */
    594 			eso_write_cmd(sc, ESO_CMD_EXTENB);
    595 			/* Reset mixer registers. */
    596 			eso_write_mixreg(sc, ESO_MIXREG_RESET,
    597 			    ESO_MIXREG_RESET_RESET);
    598 
    599 			return (0);
    600 		} else {
    601 			delay(1000);
    602 		}
    603 	}
    604 
    605 	printf("%s: reset timeout\n", sc->sc_dev.dv_xname);
    606 	return (-1);
    607 }
    608 
    609 
    610 /* ARGSUSED */
    611 static int
    612 eso_open(hdl, flags)
    613 	void *hdl;
    614 	int flags;
    615 {
    616 	struct eso_softc *sc = hdl;
    617 
    618 	DPRINTF(("%s: open\n", sc->sc_dev.dv_xname));
    619 
    620 	sc->sc_pintr = NULL;
    621 	sc->sc_rintr = NULL;
    622 
    623 	return (0);
    624 }
    625 
    626 static void
    627 eso_close(hdl)
    628 	void *hdl;
    629 {
    630 
    631 	DPRINTF(("%s: close\n", ((struct eso_softc *)hdl)->sc_dev.dv_xname));
    632 }
    633 
    634 static int
    635 eso_query_encoding(hdl, fp)
    636 	void *hdl;
    637 	struct audio_encoding *fp;
    638 {
    639 
    640 	switch (fp->index) {
    641 	case 0:
    642 		strcpy(fp->name, AudioEulinear);
    643 		fp->encoding = AUDIO_ENCODING_ULINEAR;
    644 		fp->precision = 8;
    645 		fp->flags = 0;
    646 		break;
    647 	case 1:
    648 		strcpy(fp->name, AudioEmulaw);
    649 		fp->encoding = AUDIO_ENCODING_ULAW;
    650 		fp->precision = 8;
    651 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
    652 		break;
    653 	case 2:
    654 		strcpy(fp->name, AudioEalaw);
    655 		fp->encoding = AUDIO_ENCODING_ALAW;
    656 		fp->precision = 8;
    657 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
    658 		break;
    659 	case 3:
    660 		strcpy(fp->name, AudioEslinear);
    661 		fp->encoding = AUDIO_ENCODING_SLINEAR;
    662 		fp->precision = 8;
    663 		fp->flags = 0;
    664 		break;
    665 	case 4:
    666 		strcpy(fp->name, AudioEslinear_le);
    667 		fp->encoding = AUDIO_ENCODING_SLINEAR_LE;
    668 		fp->precision = 16;
    669 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
    670 		break;
    671 	case 5:
    672 		strcpy(fp->name, AudioEulinear_le);
    673 		fp->encoding = AUDIO_ENCODING_ULINEAR_LE;
    674 		fp->precision = 16;
    675 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
    676 		break;
    677 	case 6:
    678 		strcpy(fp->name, AudioEslinear_be);
    679 		fp->encoding = AUDIO_ENCODING_SLINEAR_BE;
    680 		fp->precision = 16;
    681 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
    682 		break;
    683 	case 7:
    684 		strcpy(fp->name, AudioEulinear_be);
    685 		fp->encoding = AUDIO_ENCODING_ULINEAR_BE;
    686 		fp->precision = 16;
    687 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
    688 		break;
    689 	default:
    690 		return (EINVAL);
    691 	}
    692 
    693 	return (0);
    694 }
    695 
    696 static int
    697 eso_set_params(hdl, setmode, usemode, play, rec)
    698 	void *hdl;
    699 	int setmode, usemode;
    700 	struct audio_params *play, *rec;
    701 {
    702 	struct eso_softc *sc = hdl;
    703 	struct audio_params *p;
    704 	int mode, r[2], rd[2], clk;
    705 	unsigned int srg, fltdiv;
    706 
    707 	for (mode = AUMODE_RECORD; mode != -1;
    708 	     mode = mode == AUMODE_RECORD ? AUMODE_PLAY : -1) {
    709 		if ((setmode & mode) == 0)
    710 			continue;
    711 
    712 		p = (mode == AUMODE_PLAY) ? play : rec;
    713 
    714 		if (p->sample_rate < ESO_MINRATE ||
    715 		    p->sample_rate > ESO_MAXRATE ||
    716 		    (p->precision != 8 && p->precision != 16) ||
    717 		    (p->channels != 1 && p->channels != 2))
    718 			return (EINVAL);
    719 
    720 		p->factor = 1;
    721 		p->sw_code = NULL;
    722 		switch (p->encoding) {
    723 		case AUDIO_ENCODING_SLINEAR_BE:
    724 		case AUDIO_ENCODING_ULINEAR_BE:
    725 			if (mode == AUMODE_PLAY && p->precision == 16)
    726 				p->sw_code = swap_bytes;
    727 			break;
    728 		case AUDIO_ENCODING_SLINEAR_LE:
    729 		case AUDIO_ENCODING_ULINEAR_LE:
    730 			if (mode == AUMODE_RECORD && p->precision == 16)
    731 				p->sw_code = swap_bytes;
    732 			break;
    733 		case AUDIO_ENCODING_ULAW:
    734 			if (mode == AUMODE_PLAY) {
    735 				p->factor = 2;
    736 				p->sw_code = mulaw_to_ulinear16_le;
    737 			} else {
    738 				p->sw_code = ulinear8_to_mulaw;
    739 			}
    740 			break;
    741 		case AUDIO_ENCODING_ALAW:
    742 			if (mode == AUMODE_PLAY) {
    743 				p->factor = 2;
    744 				p->sw_code = alaw_to_ulinear16_le;
    745 			} else {
    746 				p->sw_code = ulinear8_to_alaw;
    747 			}
    748 			break;
    749 		default:
    750 			return (EINVAL);
    751 		}
    752 
    753 		/*
    754 		 * We'll compute both possible sample rate dividers and pick
    755 		 * the one with the least error.
    756 		 */
    757 #define ABS(x) ((x) < 0 ? -(x) : (x))
    758 		r[0] = ESO_CLK0 /
    759 		    (128 - (rd[0] = 128 - ESO_CLK0 / p->sample_rate));
    760 		r[1] = ESO_CLK1 /
    761 		    (128 - (rd[1] = 128 - ESO_CLK1 / p->sample_rate));
    762 
    763 		clk = ABS(p->sample_rate - r[0]) > ABS(p->sample_rate - r[1]);
    764 		srg = rd[clk] | (clk == 1 ? ESO_CLK1_SELECT : 0x00);
    765 
    766 		/* Roll-off frequency of 87%, as in the ES1888 driver. */
    767 		fltdiv = 256 - 200279L / r[clk];
    768 
    769 		/* Update to reflect the possibly inexact rate. */
    770 		p->sample_rate = r[clk];
    771 
    772 		if (mode == AUMODE_RECORD) {
    773 			/* Audio 1 */
    774 			DPRINTF(("A1 srg 0x%02x fdiv 0x%02x\n", srg, fltdiv));
    775 			eso_write_ctlreg(sc, ESO_CTLREG_SRG, srg);
    776 			eso_write_ctlreg(sc, ESO_CTLREG_FLTDIV, fltdiv);
    777 		} else {
    778 			/* Audio 2 */
    779 			DPRINTF(("A2 srg 0x%02x fdiv 0x%02x\n", srg, fltdiv));
    780 			eso_write_mixreg(sc, ESO_MIXREG_A2SRG, srg);
    781 			eso_write_mixreg(sc, ESO_MIXREG_A2FLTDIV, fltdiv);
    782 		}
    783 #undef ABS
    784 
    785 	}
    786 
    787 	return (0);
    788 }
    789 
    790 static int
    791 eso_round_blocksize(hdl, blk)
    792 	void *hdl;
    793 	int blk;
    794 {
    795 
    796 	return (blk & -32);	/* keep good alignment; at least 16 req'd */
    797 }
    798 
    799 static int
    800 eso_halt_output(hdl)
    801 	void *hdl;
    802 {
    803 	struct eso_softc *sc = hdl;
    804 	int error, s;
    805 
    806 	DPRINTF(("%s: halt_output\n", sc->sc_dev.dv_xname));
    807 
    808 	/*
    809 	 * Disable auto-initialize DMA, allowing the FIFO to drain and then
    810 	 * stop.  The interrupt callback pointer is cleared at this
    811 	 * point so that an outstanding FIFO interrupt for the remaining data
    812 	 * will be acknowledged without further processing.
    813 	 *
    814 	 * This does not immediately `abort' an operation in progress (c.f.
    815 	 * audio(9)) but is the method to leave the FIFO behind in a clean
    816 	 * state with the least hair.  (Besides, that item needs to be
    817 	 * rephrased for trigger_*()-based DMA environments.)
    818 	 */
    819 	s = splaudio();
    820 	eso_write_mixreg(sc, ESO_MIXREG_A2C1,
    821 	    ESO_MIXREG_A2C1_FIFOENB | ESO_MIXREG_A2C1_DMAENB);
    822 	bus_space_write_1(sc->sc_iot, sc->sc_ioh, ESO_IO_A2DMAM,
    823 	    ESO_IO_A2DMAM_DMAENB);
    824 
    825 	sc->sc_pintr = NULL;
    826 	error = tsleep(&sc->sc_pintr, PCATCH | PWAIT, "esoho", sc->sc_pdrain);
    827 	splx(s);
    828 
    829 	/* Shut down DMA completely. */
    830 	eso_write_mixreg(sc, ESO_MIXREG_A2C1, 0);
    831 	bus_space_write_1(sc->sc_iot, sc->sc_ioh, ESO_IO_A2DMAM, 0);
    832 
    833 	return (error == EWOULDBLOCK ? 0 : error);
    834 }
    835 
    836 static int
    837 eso_halt_input(hdl)
    838 	void *hdl;
    839 {
    840 	struct eso_softc *sc = hdl;
    841 	int error, s;
    842 
    843 	DPRINTF(("%s: halt_input\n", sc->sc_dev.dv_xname));
    844 
    845 	/* Just like eso_halt_output(), but for Audio 1. */
    846 	s = splaudio();
    847 	eso_write_ctlreg(sc, ESO_CTLREG_A1C2,
    848 	    ESO_CTLREG_A1C2_READ | ESO_CTLREG_A1C2_ADC |
    849 	    ESO_CTLREG_A1C2_DMAENB);
    850 	bus_space_write_1(sc->sc_dmac_iot, sc->sc_dmac_ioh, ESO_DMAC_MODE,
    851 	    DMA37MD_WRITE | DMA37MD_DEMAND);
    852 
    853 	sc->sc_rintr = NULL;
    854 	error = tsleep(&sc->sc_rintr, PCATCH | PWAIT, "esohi", sc->sc_rdrain);
    855 	splx(s);
    856 
    857 	/* Shut down DMA completely. */
    858 	eso_write_ctlreg(sc, ESO_CTLREG_A1C2,
    859 	    ESO_CTLREG_A1C2_READ | ESO_CTLREG_A1C2_ADC);
    860 	bus_space_write_1(sc->sc_dmac_iot, sc->sc_dmac_ioh, ESO_DMAC_MASK,
    861 	    ESO_DMAC_MASK_MASK);
    862 
    863 	return (error == EWOULDBLOCK ? 0 : error);
    864 }
    865 
    866 static int
    867 eso_getdev(hdl, retp)
    868 	void *hdl;
    869 	struct audio_device *retp;
    870 {
    871 	struct eso_softc *sc = hdl;
    872 
    873 	strncpy(retp->name, "ESS Solo-1", sizeof (retp->name));
    874 	snprintf(retp->version, sizeof (retp->version), "0x%02x",
    875 	    sc->sc_revision);
    876 	if (sc->sc_revision <
    877 	    sizeof (eso_rev2model) / sizeof (eso_rev2model[0]))
    878 		strncpy(retp->config, eso_rev2model[sc->sc_revision],
    879 		    sizeof (retp->config));
    880 	else
    881 		strncpy(retp->config, "unknown", sizeof (retp->config));
    882 
    883 	return (0);
    884 }
    885 
    886 static int
    887 eso_set_port(hdl, cp)
    888 	void *hdl;
    889 	mixer_ctrl_t *cp;
    890 {
    891 	struct eso_softc *sc = hdl;
    892 	unsigned int lgain, rgain;
    893 	uint8_t tmp;
    894 
    895 	switch (cp->dev) {
    896 	case ESO_DAC_PLAY_VOL:
    897 	case ESO_MIC_PLAY_VOL:
    898 	case ESO_LINE_PLAY_VOL:
    899 	case ESO_SYNTH_PLAY_VOL:
    900 	case ESO_CD_PLAY_VOL:
    901 	case ESO_AUXB_PLAY_VOL:
    902 	case ESO_RECORD_VOL:
    903 	case ESO_DAC_REC_VOL:
    904 	case ESO_MIC_REC_VOL:
    905 	case ESO_LINE_REC_VOL:
    906 	case ESO_SYNTH_REC_VOL:
    907 	case ESO_CD_REC_VOL:
    908 	case ESO_AUXB_REC_VOL:
    909 		if (cp->type != AUDIO_MIXER_VALUE)
    910 			return (EINVAL);
    911 
    912 		/*
    913 		 * Stereo-capable mixer ports: if we get a single-channel
    914 		 * gain value passed in, then we duplicate it to both left
    915 		 * and right channels.
    916 		 */
    917 		switch (cp->un.value.num_channels) {
    918 		case 1:
    919 			lgain = rgain = ESO_GAIN_TO_4BIT(
    920 			    cp->un.value.level[AUDIO_MIXER_LEVEL_MONO]);
    921 			break;
    922 		case 2:
    923 			lgain = ESO_GAIN_TO_4BIT(
    924 			    cp->un.value.level[AUDIO_MIXER_LEVEL_LEFT]);
    925 			rgain = ESO_GAIN_TO_4BIT(
    926 			    cp->un.value.level[AUDIO_MIXER_LEVEL_RIGHT]);
    927 			break;
    928 		default:
    929 			return (EINVAL);
    930 		}
    931 
    932 		sc->sc_gain[cp->dev][ESO_LEFT] = lgain;
    933 		sc->sc_gain[cp->dev][ESO_RIGHT] = rgain;
    934 		eso_set_gain(sc, cp->dev);
    935 		break;
    936 
    937 	case ESO_MASTER_VOL:
    938 		if (cp->type != AUDIO_MIXER_VALUE)
    939 			return (EINVAL);
    940 
    941 		/* Like above, but a precision of 6 bits. */
    942 		switch (cp->un.value.num_channels) {
    943 		case 1:
    944 			lgain = rgain = ESO_GAIN_TO_6BIT(
    945 			    cp->un.value.level[AUDIO_MIXER_LEVEL_MONO]);
    946 			break;
    947 		case 2:
    948 			lgain = ESO_GAIN_TO_6BIT(
    949 			    cp->un.value.level[AUDIO_MIXER_LEVEL_LEFT]);
    950 			rgain = ESO_GAIN_TO_6BIT(
    951 			    cp->un.value.level[AUDIO_MIXER_LEVEL_RIGHT]);
    952 			break;
    953 		default:
    954 			return (EINVAL);
    955 		}
    956 
    957 		sc->sc_gain[cp->dev][ESO_LEFT] = lgain;
    958 		sc->sc_gain[cp->dev][ESO_RIGHT] = rgain;
    959 		eso_set_gain(sc, cp->dev);
    960 		break;
    961 
    962 	case ESO_SPATIALIZER:
    963 		if (cp->type != AUDIO_MIXER_VALUE ||
    964 		    cp->un.value.num_channels != 1)
    965 			return (EINVAL);
    966 
    967 		sc->sc_gain[cp->dev][ESO_LEFT] =
    968 		    sc->sc_gain[cp->dev][ESO_RIGHT] =
    969 		    ESO_GAIN_TO_6BIT(
    970 			cp->un.value.level[AUDIO_MIXER_LEVEL_MONO]);
    971 		eso_set_gain(sc, cp->dev);
    972 		break;
    973 
    974 	case ESO_MONO_PLAY_VOL:
    975 	case ESO_MONO_REC_VOL:
    976 		if (cp->type != AUDIO_MIXER_VALUE ||
    977 		    cp->un.value.num_channels != 1)
    978 			return (EINVAL);
    979 
    980 		sc->sc_gain[cp->dev][ESO_LEFT] =
    981 		    sc->sc_gain[cp->dev][ESO_RIGHT] =
    982 		    ESO_GAIN_TO_4BIT(
    983 			cp->un.value.level[AUDIO_MIXER_LEVEL_MONO]);
    984 		eso_set_gain(sc, cp->dev);
    985 		break;
    986 
    987 	case ESO_PCSPEAKER_VOL:
    988 		if (cp->type != AUDIO_MIXER_VALUE ||
    989 		    cp->un.value.num_channels != 1)
    990 			return (EINVAL);
    991 
    992 		sc->sc_gain[cp->dev][ESO_LEFT] =
    993 		    sc->sc_gain[cp->dev][ESO_RIGHT] =
    994 		    ESO_GAIN_TO_3BIT(
    995 			cp->un.value.level[AUDIO_MIXER_LEVEL_MONO]);
    996 		eso_set_gain(sc, cp->dev);
    997 		break;
    998 
    999 	case ESO_SPATIALIZER_ENABLE:
   1000 		if (cp->type != AUDIO_MIXER_ENUM)
   1001 			return (EINVAL);
   1002 
   1003 		sc->sc_spatializer = (cp->un.ord != 0);
   1004 
   1005 		tmp = eso_read_mixreg(sc, ESO_MIXREG_SPAT);
   1006 		if (sc->sc_spatializer)
   1007 			tmp |= ESO_MIXREG_SPAT_ENB;
   1008 		else
   1009 			tmp &= ~ESO_MIXREG_SPAT_ENB;
   1010 		eso_write_mixreg(sc, ESO_MIXREG_SPAT,
   1011 		    tmp | ESO_MIXREG_SPAT_RSTREL);
   1012 		break;
   1013 
   1014 	case ESO_MASTER_MUTE:
   1015 		if (cp->type != AUDIO_MIXER_ENUM)
   1016 			return (EINVAL);
   1017 
   1018 		sc->sc_mvmute = (cp->un.ord != 0);
   1019 
   1020 		if (sc->sc_mvmute) {
   1021 			eso_write_mixreg(sc, ESO_MIXREG_LMVM,
   1022 			    eso_read_mixreg(sc, ESO_MIXREG_LMVM) |
   1023 			    ESO_MIXREG_LMVM_MUTE);
   1024 			eso_write_mixreg(sc, ESO_MIXREG_RMVM,
   1025 			    eso_read_mixreg(sc, ESO_MIXREG_RMVM) |
   1026 			    ESO_MIXREG_RMVM_MUTE);
   1027 		} else {
   1028 			eso_write_mixreg(sc, ESO_MIXREG_LMVM,
   1029 			    eso_read_mixreg(sc, ESO_MIXREG_LMVM) &
   1030 			    ~ESO_MIXREG_LMVM_MUTE);
   1031 			eso_write_mixreg(sc, ESO_MIXREG_RMVM,
   1032 			    eso_read_mixreg(sc, ESO_MIXREG_RMVM) &
   1033 			    ~ESO_MIXREG_RMVM_MUTE);
   1034 		}
   1035 		break;
   1036 
   1037 	case ESO_MONOOUT_SOURCE:
   1038 		if (cp->type != AUDIO_MIXER_ENUM)
   1039 			return (EINVAL);
   1040 
   1041 		return (eso_set_monooutsrc(sc, cp->un.ord));
   1042 
   1043 	case ESO_RECORD_MONITOR:
   1044 		if (cp->type != AUDIO_MIXER_ENUM)
   1045 			return (EINVAL);
   1046 
   1047 		sc->sc_recmon = (cp->un.ord != 0);
   1048 
   1049 		tmp = eso_read_ctlreg(sc, ESO_CTLREG_ACTL);
   1050 		if (sc->sc_recmon)
   1051 			tmp |= ESO_CTLREG_ACTL_RECMON;
   1052 		else
   1053 			tmp &= ~ESO_CTLREG_ACTL_RECMON;
   1054 		eso_write_ctlreg(sc, ESO_CTLREG_ACTL, tmp);
   1055 		break;
   1056 
   1057 	case ESO_RECORD_SOURCE:
   1058 		if (cp->type != AUDIO_MIXER_ENUM)
   1059 			return (EINVAL);
   1060 
   1061 		return (eso_set_recsrc(sc, cp->un.ord));
   1062 
   1063 	case ESO_MIC_PREAMP:
   1064 		if (cp->type != AUDIO_MIXER_ENUM)
   1065 			return (EINVAL);
   1066 
   1067 		sc->sc_preamp = (cp->un.ord != 0);
   1068 
   1069 		tmp = eso_read_mixreg(sc, ESO_MIXREG_MPM);
   1070 		tmp &= ~ESO_MIXREG_MPM_RESV0;
   1071 		if (sc->sc_preamp)
   1072 			tmp |= ESO_MIXREG_MPM_PREAMP;
   1073 		else
   1074 			tmp &= ~ESO_MIXREG_MPM_PREAMP;
   1075 		eso_write_mixreg(sc, ESO_MIXREG_MPM, tmp);
   1076 		break;
   1077 
   1078 	default:
   1079 		return (EINVAL);
   1080 	}
   1081 
   1082 	return (0);
   1083 }
   1084 
   1085 static int
   1086 eso_get_port(hdl, cp)
   1087 	void *hdl;
   1088 	mixer_ctrl_t *cp;
   1089 {
   1090 	struct eso_softc *sc = hdl;
   1091 
   1092 	switch (cp->dev) {
   1093 	case ESO_MASTER_VOL:
   1094 		/* Reload from mixer after hardware volume control use. */
   1095 		if (sc->sc_gain[cp->dev][ESO_LEFT] == (uint8_t)~0)
   1096 			eso_reload_master_vol(sc);
   1097 		/* FALLTHROUGH */
   1098 	case ESO_DAC_PLAY_VOL:
   1099 	case ESO_MIC_PLAY_VOL:
   1100 	case ESO_LINE_PLAY_VOL:
   1101 	case ESO_SYNTH_PLAY_VOL:
   1102 	case ESO_CD_PLAY_VOL:
   1103 	case ESO_AUXB_PLAY_VOL:
   1104 	case ESO_RECORD_VOL:
   1105 	case ESO_DAC_REC_VOL:
   1106 	case ESO_MIC_REC_VOL:
   1107 	case ESO_LINE_REC_VOL:
   1108 	case ESO_SYNTH_REC_VOL:
   1109 	case ESO_CD_REC_VOL:
   1110 	case ESO_AUXB_REC_VOL:
   1111 		/*
   1112 		 * Stereo-capable ports: if a single-channel query is made,
   1113 		 * just return the left channel's value (since single-channel
   1114 		 * settings themselves are applied to both channels).
   1115 		 */
   1116 		switch (cp->un.value.num_channels) {
   1117 		case 1:
   1118 			cp->un.value.level[AUDIO_MIXER_LEVEL_MONO] =
   1119 			    sc->sc_gain[cp->dev][ESO_LEFT];
   1120 			break;
   1121 		case 2:
   1122 			cp->un.value.level[AUDIO_MIXER_LEVEL_LEFT] =
   1123 			    sc->sc_gain[cp->dev][ESO_LEFT];
   1124 			cp->un.value.level[AUDIO_MIXER_LEVEL_RIGHT] =
   1125 			    sc->sc_gain[cp->dev][ESO_RIGHT];
   1126 			break;
   1127 		default:
   1128 			return (EINVAL);
   1129 		}
   1130 		break;
   1131 
   1132 	case ESO_MONO_PLAY_VOL:
   1133 	case ESO_PCSPEAKER_VOL:
   1134 	case ESO_MONO_REC_VOL:
   1135 	case ESO_SPATIALIZER:
   1136 		if (cp->un.value.num_channels != 1)
   1137 			return (EINVAL);
   1138 		cp->un.value.level[AUDIO_MIXER_LEVEL_MONO] =
   1139 		    sc->sc_gain[cp->dev][ESO_LEFT];
   1140 		break;
   1141 
   1142 	case ESO_RECORD_MONITOR:
   1143 		cp->un.ord = sc->sc_recmon;
   1144 		break;
   1145 
   1146 	case ESO_RECORD_SOURCE:
   1147 		cp->un.ord = sc->sc_recsrc;
   1148 		break;
   1149 
   1150 	case ESO_MONOOUT_SOURCE:
   1151 		cp->un.ord = sc->sc_monooutsrc;
   1152 		break;
   1153 
   1154 	case ESO_SPATIALIZER_ENABLE:
   1155 		cp->un.ord = sc->sc_spatializer;
   1156 		break;
   1157 
   1158 	case ESO_MIC_PREAMP:
   1159 		cp->un.ord = sc->sc_preamp;
   1160 		break;
   1161 
   1162 	case ESO_MASTER_MUTE:
   1163 		/* Reload from mixer after hardware volume control use. */
   1164 		if (sc->sc_gain[cp->dev][ESO_LEFT] == (uint8_t)~0)
   1165 			eso_reload_master_vol(sc);
   1166 		cp->un.ord = sc->sc_mvmute;
   1167 		break;
   1168 
   1169 	default:
   1170 		return (EINVAL);
   1171 	}
   1172 
   1173 
   1174 	return (0);
   1175 
   1176 }
   1177 
   1178 static int
   1179 eso_query_devinfo(hdl, dip)
   1180 	void *hdl;
   1181 	mixer_devinfo_t *dip;
   1182 {
   1183 
   1184 	switch (dip->index) {
   1185 	case ESO_DAC_PLAY_VOL:
   1186 		dip->mixer_class = ESO_INPUT_CLASS;
   1187 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1188 		strcpy(dip->label.name, AudioNdac);
   1189 		dip->type = AUDIO_MIXER_VALUE;
   1190 		dip->un.v.num_channels = 2;
   1191 		strcpy(dip->un.v.units.name, AudioNvolume);
   1192 		break;
   1193 	case ESO_MIC_PLAY_VOL:
   1194 		dip->mixer_class = ESO_INPUT_CLASS;
   1195 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1196 		strcpy(dip->label.name, AudioNmicrophone);
   1197 		dip->type = AUDIO_MIXER_VALUE;
   1198 		dip->un.v.num_channels = 2;
   1199 		strcpy(dip->un.v.units.name, AudioNvolume);
   1200 		break;
   1201 	case ESO_LINE_PLAY_VOL:
   1202 		dip->mixer_class = ESO_INPUT_CLASS;
   1203 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1204 		strcpy(dip->label.name, AudioNline);
   1205 		dip->type = AUDIO_MIXER_VALUE;
   1206 		dip->un.v.num_channels = 2;
   1207 		strcpy(dip->un.v.units.name, AudioNvolume);
   1208 		break;
   1209 	case ESO_SYNTH_PLAY_VOL:
   1210 		dip->mixer_class = ESO_INPUT_CLASS;
   1211 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1212 		strcpy(dip->label.name, AudioNfmsynth);
   1213 		dip->type = AUDIO_MIXER_VALUE;
   1214 		dip->un.v.num_channels = 2;
   1215 		strcpy(dip->un.v.units.name, AudioNvolume);
   1216 		break;
   1217 	case ESO_MONO_PLAY_VOL:
   1218 		dip->mixer_class = ESO_INPUT_CLASS;
   1219 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1220 		strcpy(dip->label.name, "mono_in");
   1221 		dip->type = AUDIO_MIXER_VALUE;
   1222 		dip->un.v.num_channels = 1;
   1223 		strcpy(dip->un.v.units.name, AudioNvolume);
   1224 		break;
   1225 	case ESO_CD_PLAY_VOL:
   1226 		dip->mixer_class = ESO_INPUT_CLASS;
   1227 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1228 		strcpy(dip->label.name, AudioNcd);
   1229 		dip->type = AUDIO_MIXER_VALUE;
   1230 		dip->un.v.num_channels = 2;
   1231 		strcpy(dip->un.v.units.name, AudioNvolume);
   1232 		break;
   1233 	case ESO_AUXB_PLAY_VOL:
   1234 		dip->mixer_class = ESO_INPUT_CLASS;
   1235 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1236 		strcpy(dip->label.name, "auxb");
   1237 		dip->type = AUDIO_MIXER_VALUE;
   1238 		dip->un.v.num_channels = 2;
   1239 		strcpy(dip->un.v.units.name, AudioNvolume);
   1240 		break;
   1241 
   1242 	case ESO_MIC_PREAMP:
   1243 		dip->mixer_class = ESO_MICROPHONE_CLASS;
   1244 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1245 		strcpy(dip->label.name, AudioNpreamp);
   1246 		dip->type = AUDIO_MIXER_ENUM;
   1247 		dip->un.e.num_mem = 2;
   1248 		strcpy(dip->un.e.member[0].label.name, AudioNoff);
   1249 		dip->un.e.member[0].ord = 0;
   1250 		strcpy(dip->un.e.member[1].label.name, AudioNon);
   1251 		dip->un.e.member[1].ord = 1;
   1252 		break;
   1253 	case ESO_MICROPHONE_CLASS:
   1254 		dip->mixer_class = ESO_MICROPHONE_CLASS;
   1255 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1256 		strcpy(dip->label.name, AudioNmicrophone);
   1257 		dip->type = AUDIO_MIXER_CLASS;
   1258 		break;
   1259 
   1260 	case ESO_INPUT_CLASS:
   1261 		dip->mixer_class = ESO_INPUT_CLASS;
   1262 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1263 		strcpy(dip->label.name, AudioCinputs);
   1264 		dip->type = AUDIO_MIXER_CLASS;
   1265 		break;
   1266 
   1267 	case ESO_MASTER_VOL:
   1268 		dip->mixer_class = ESO_OUTPUT_CLASS;
   1269 		dip->prev = AUDIO_MIXER_LAST;
   1270 		dip->next = ESO_MASTER_MUTE;
   1271 		strcpy(dip->label.name, AudioNmaster);
   1272 		dip->type = AUDIO_MIXER_VALUE;
   1273 		dip->un.v.num_channels = 2;
   1274 		strcpy(dip->un.v.units.name, AudioNvolume);
   1275 		break;
   1276 	case ESO_MASTER_MUTE:
   1277 		dip->mixer_class = ESO_OUTPUT_CLASS;
   1278 		dip->prev = ESO_MASTER_VOL;
   1279 		dip->next = AUDIO_MIXER_LAST;
   1280 		strcpy(dip->label.name, AudioNmute);
   1281 		dip->type = AUDIO_MIXER_ENUM;
   1282 		dip->un.e.num_mem = 2;
   1283 		strcpy(dip->un.e.member[0].label.name, AudioNoff);
   1284 		dip->un.e.member[0].ord = 0;
   1285 		strcpy(dip->un.e.member[1].label.name, AudioNon);
   1286 		dip->un.e.member[1].ord = 1;
   1287 		break;
   1288 
   1289 	case ESO_PCSPEAKER_VOL:
   1290 		dip->mixer_class = ESO_OUTPUT_CLASS;
   1291 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1292 		strcpy(dip->label.name, "pc_speaker");
   1293 		dip->type = AUDIO_MIXER_VALUE;
   1294 		dip->un.v.num_channels = 1;
   1295 		strcpy(dip->un.v.units.name, AudioNvolume);
   1296 		break;
   1297 	case ESO_MONOOUT_SOURCE:
   1298 		dip->mixer_class = ESO_OUTPUT_CLASS;
   1299 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1300 		strcpy(dip->label.name, "mono_out");
   1301 		dip->type = AUDIO_MIXER_ENUM;
   1302 		dip->un.e.num_mem = 3;
   1303 		strcpy(dip->un.e.member[0].label.name, AudioNmute);
   1304 		dip->un.e.member[0].ord = ESO_MIXREG_MPM_MOMUTE;
   1305 		strcpy(dip->un.e.member[1].label.name, AudioNdac);
   1306 		dip->un.e.member[1].ord = ESO_MIXREG_MPM_MOA2R;
   1307 		strcpy(dip->un.e.member[2].label.name, AudioNmixerout);
   1308 		dip->un.e.member[2].ord = ESO_MIXREG_MPM_MOREC;
   1309 		break;
   1310 	case ESO_SPATIALIZER:
   1311 		dip->mixer_class = ESO_OUTPUT_CLASS;
   1312 		dip->prev = AUDIO_MIXER_LAST;
   1313 		dip->next = ESO_SPATIALIZER_ENABLE;
   1314 		strcpy(dip->label.name, AudioNspatial);
   1315 		dip->type = AUDIO_MIXER_VALUE;
   1316 		dip->un.v.num_channels = 1;
   1317 		strcpy(dip->un.v.units.name, "level");
   1318 		break;
   1319 	case ESO_SPATIALIZER_ENABLE:
   1320 		dip->mixer_class = ESO_OUTPUT_CLASS;
   1321 		dip->prev = ESO_SPATIALIZER;
   1322 		dip->next = AUDIO_MIXER_LAST;
   1323 		strcpy(dip->label.name, "enable");
   1324 		dip->type = AUDIO_MIXER_ENUM;
   1325 		dip->un.e.num_mem = 2;
   1326 		strcpy(dip->un.e.member[0].label.name, AudioNoff);
   1327 		dip->un.e.member[0].ord = 0;
   1328 		strcpy(dip->un.e.member[1].label.name, AudioNon);
   1329 		dip->un.e.member[1].ord = 1;
   1330 		break;
   1331 
   1332 	case ESO_OUTPUT_CLASS:
   1333 		dip->mixer_class = ESO_OUTPUT_CLASS;
   1334 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1335 		strcpy(dip->label.name, AudioCoutputs);
   1336 		dip->type = AUDIO_MIXER_CLASS;
   1337 		break;
   1338 
   1339 	case ESO_RECORD_MONITOR:
   1340 		dip->mixer_class = ESO_MONITOR_CLASS;
   1341 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1342 		strcpy(dip->label.name, AudioNmute);
   1343 		dip->type = AUDIO_MIXER_ENUM;
   1344 		dip->un.e.num_mem = 2;
   1345 		strcpy(dip->un.e.member[0].label.name, AudioNoff);
   1346 		dip->un.e.member[0].ord = 0;
   1347 		strcpy(dip->un.e.member[1].label.name, AudioNon);
   1348 		dip->un.e.member[1].ord = 1;
   1349 		break;
   1350 	case ESO_MONITOR_CLASS:
   1351 		dip->mixer_class = ESO_MONITOR_CLASS;
   1352 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1353 		strcpy(dip->label.name, AudioCmonitor);
   1354 		dip->type = AUDIO_MIXER_CLASS;
   1355 		break;
   1356 
   1357 	case ESO_RECORD_VOL:
   1358 		dip->mixer_class = ESO_RECORD_CLASS;
   1359 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1360 		strcpy(dip->label.name, AudioNrecord);
   1361 		dip->type = AUDIO_MIXER_VALUE;
   1362 		strcpy(dip->un.v.units.name, AudioNvolume);
   1363 		break;
   1364 	case ESO_RECORD_SOURCE:
   1365 		dip->mixer_class = ESO_RECORD_CLASS;
   1366 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1367 		strcpy(dip->label.name, AudioNsource);
   1368 		dip->type = AUDIO_MIXER_ENUM;
   1369 		dip->un.e.num_mem = 4;
   1370 		strcpy(dip->un.e.member[0].label.name, AudioNmicrophone);
   1371 		dip->un.e.member[0].ord = ESO_MIXREG_ERS_MIC;
   1372 		strcpy(dip->un.e.member[1].label.name, AudioNline);
   1373 		dip->un.e.member[1].ord = ESO_MIXREG_ERS_LINE;
   1374 		strcpy(dip->un.e.member[2].label.name, AudioNcd);
   1375 		dip->un.e.member[2].ord = ESO_MIXREG_ERS_CD;
   1376 		strcpy(dip->un.e.member[3].label.name, AudioNmixerout);
   1377 		dip->un.e.member[3].ord = ESO_MIXREG_ERS_MIXER;
   1378 		break;
   1379 	case ESO_DAC_REC_VOL:
   1380 		dip->mixer_class = ESO_RECORD_CLASS;
   1381 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1382 		strcpy(dip->label.name, AudioNdac);
   1383 		dip->type = AUDIO_MIXER_VALUE;
   1384 		dip->un.v.num_channels = 2;
   1385 		strcpy(dip->un.v.units.name, AudioNvolume);
   1386 		break;
   1387 	case ESO_MIC_REC_VOL:
   1388 		dip->mixer_class = ESO_RECORD_CLASS;
   1389 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1390 		strcpy(dip->label.name, AudioNmicrophone);
   1391 		dip->type = AUDIO_MIXER_VALUE;
   1392 		dip->un.v.num_channels = 2;
   1393 		strcpy(dip->un.v.units.name, AudioNvolume);
   1394 		break;
   1395 	case ESO_LINE_REC_VOL:
   1396 		dip->mixer_class = ESO_RECORD_CLASS;
   1397 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1398 		strcpy(dip->label.name, AudioNline);
   1399 		dip->type = AUDIO_MIXER_VALUE;
   1400 		dip->un.v.num_channels = 2;
   1401 		strcpy(dip->un.v.units.name, AudioNvolume);
   1402 		break;
   1403 	case ESO_SYNTH_REC_VOL:
   1404 		dip->mixer_class = ESO_RECORD_CLASS;
   1405 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1406 		strcpy(dip->label.name, AudioNfmsynth);
   1407 		dip->type = AUDIO_MIXER_VALUE;
   1408 		dip->un.v.num_channels = 2;
   1409 		strcpy(dip->un.v.units.name, AudioNvolume);
   1410 		break;
   1411 	case ESO_MONO_REC_VOL:
   1412 		dip->mixer_class = ESO_RECORD_CLASS;
   1413 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1414 		strcpy(dip->label.name, "mono_in");
   1415 		dip->type = AUDIO_MIXER_VALUE;
   1416 		dip->un.v.num_channels = 1; /* No lies */
   1417 		strcpy(dip->un.v.units.name, AudioNvolume);
   1418 		break;
   1419 	case ESO_CD_REC_VOL:
   1420 		dip->mixer_class = ESO_RECORD_CLASS;
   1421 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1422 		strcpy(dip->label.name, AudioNcd);
   1423 		dip->type = AUDIO_MIXER_VALUE;
   1424 		dip->un.v.num_channels = 2;
   1425 		strcpy(dip->un.v.units.name, AudioNvolume);
   1426 		break;
   1427 	case ESO_AUXB_REC_VOL:
   1428 		dip->mixer_class = ESO_RECORD_CLASS;
   1429 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1430 		strcpy(dip->label.name, "auxb");
   1431 		dip->type = AUDIO_MIXER_VALUE;
   1432 		dip->un.v.num_channels = 2;
   1433 		strcpy(dip->un.v.units.name, AudioNvolume);
   1434 		break;
   1435 	case ESO_RECORD_CLASS:
   1436 		dip->mixer_class = ESO_RECORD_CLASS;
   1437 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1438 		strcpy(dip->label.name, AudioCrecord);
   1439 		dip->type = AUDIO_MIXER_CLASS;
   1440 		break;
   1441 
   1442 	default:
   1443 		return (ENXIO);
   1444 	}
   1445 
   1446 	return (0);
   1447 }
   1448 
   1449 static int
   1450 eso_allocmem(sc, size, align, boundary, flags, ed)
   1451 	struct eso_softc *sc;
   1452 	size_t size;
   1453 	size_t align;
   1454 	size_t boundary;
   1455 	int flags;
   1456 	struct eso_dma *ed;
   1457 {
   1458 	int error, wait;
   1459 
   1460 	wait = (flags & M_NOWAIT) ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK;
   1461 	ed->ed_size = size;
   1462 
   1463 	error = bus_dmamem_alloc(ed->ed_dmat, ed->ed_size, align, boundary,
   1464 	    ed->ed_segs, sizeof (ed->ed_segs) / sizeof (ed->ed_segs[0]),
   1465 	    &ed->ed_nsegs, wait);
   1466 	if (error)
   1467 		goto out;
   1468 
   1469 	error = bus_dmamem_map(ed->ed_dmat, ed->ed_segs, ed->ed_nsegs,
   1470 	    ed->ed_size, &ed->ed_addr, wait | BUS_DMA_COHERENT);
   1471 	if (error)
   1472 		goto free;
   1473 
   1474 	error = bus_dmamap_create(ed->ed_dmat, ed->ed_size, 1, ed->ed_size, 0,
   1475 	    wait, &ed->ed_map);
   1476 	if (error)
   1477 		goto unmap;
   1478 
   1479 	error = bus_dmamap_load(ed->ed_dmat, ed->ed_map, ed->ed_addr,
   1480 	    ed->ed_size, NULL, wait);
   1481 	if (error)
   1482 		goto destroy;
   1483 
   1484 	return (0);
   1485 
   1486  destroy:
   1487 	bus_dmamap_destroy(ed->ed_dmat, ed->ed_map);
   1488  unmap:
   1489 	bus_dmamem_unmap(ed->ed_dmat, ed->ed_addr, ed->ed_size);
   1490  free:
   1491 	bus_dmamem_free(ed->ed_dmat, ed->ed_segs, ed->ed_nsegs);
   1492  out:
   1493 	return (error);
   1494 }
   1495 
   1496 static void
   1497 eso_freemem(ed)
   1498 	struct eso_dma *ed;
   1499 {
   1500 
   1501 	bus_dmamap_unload(ed->ed_dmat, ed->ed_map);
   1502 	bus_dmamap_destroy(ed->ed_dmat, ed->ed_map);
   1503 	bus_dmamem_unmap(ed->ed_dmat, ed->ed_addr, ed->ed_size);
   1504 	bus_dmamem_free(ed->ed_dmat, ed->ed_segs, ed->ed_nsegs);
   1505 }
   1506 
   1507 static void *
   1508 eso_allocm(hdl, direction, size, type, flags)
   1509 	void *hdl;
   1510 	int direction;
   1511 	size_t size;
   1512 	int type, flags;
   1513 {
   1514 	struct eso_softc *sc = hdl;
   1515 	struct eso_dma *ed;
   1516 	size_t boundary;
   1517 	int error;
   1518 
   1519 	if ((ed = malloc(size, type, flags)) == NULL)
   1520 		return (NULL);
   1521 
   1522 	/*
   1523 	 * Apparently the Audio 1 DMA controller's current address
   1524 	 * register can't roll over a 64K address boundary, so we have to
   1525 	 * take care of that ourselves.  The second channel DMA controller
   1526 	 * doesn't have that restriction, however.
   1527 	 */
   1528 	if (direction == AUMODE_RECORD)
   1529 		boundary = 0x10000;
   1530 	else
   1531 		boundary = 0;
   1532 
   1533 #ifdef alpha
   1534 	/*
   1535 	 * XXX For Audio 1, which implements the 24 low address bits only,
   1536 	 * XXX force allocation through the (ISA) SGMAP.
   1537 	 */
   1538 	if (direction == AUMODE_RECORD)
   1539 		ed->ed_dmat = alphabus_dma_get_tag(sc->sc_dmat, ALPHA_BUS_ISA);
   1540 	else
   1541 #endif
   1542 		ed->ed_dmat = sc->sc_dmat;
   1543 
   1544 	error = eso_allocmem(sc, size, 32, boundary, flags, ed);
   1545 	if (error) {
   1546 		free(ed, type);
   1547 		return (NULL);
   1548 	}
   1549 	ed->ed_next = sc->sc_dmas;
   1550 	sc->sc_dmas = ed;
   1551 
   1552 	return (KVADDR(ed));
   1553 }
   1554 
   1555 static void
   1556 eso_freem(hdl, addr, type)
   1557 	void *hdl;
   1558 	void *addr;
   1559 	int type;
   1560 {
   1561 	struct eso_softc *sc = hdl;
   1562 	struct eso_dma *p, **pp;
   1563 
   1564 	for (pp = &sc->sc_dmas; (p = *pp) != NULL; pp = &p->ed_next) {
   1565 		if (KVADDR(p) == addr) {
   1566 			eso_freemem(p);
   1567 			*pp = p->ed_next;
   1568 			free(p, type);
   1569 			return;
   1570 		}
   1571 	}
   1572 }
   1573 
   1574 static size_t
   1575 eso_round_buffersize(hdl, direction, bufsize)
   1576 	void *hdl;
   1577 	int direction;
   1578 	size_t bufsize;
   1579 {
   1580 	size_t maxsize;
   1581 
   1582 	/*
   1583 	 * The playback DMA buffer size on the Solo-1 is limited to 0xfff0
   1584 	 * bytes.  This is because IO_A2DMAC is a two byte value
   1585 	 * indicating the literal byte count, and the 4 least significant
   1586 	 * bits are read-only.  Zero is not used as a special case for
   1587 	 * 0x10000.
   1588 	 *
   1589 	 * For recording, DMAC_DMAC is the byte count - 1, so 0x10000 can
   1590 	 * be represented.
   1591 	 */
   1592 	maxsize = (direction == AUMODE_PLAY) ? 0xfff0 : 0x10000;
   1593 
   1594 	if (bufsize > maxsize)
   1595 		bufsize = maxsize;
   1596 
   1597 	return (bufsize);
   1598 }
   1599 
   1600 static int
   1601 eso_mappage(hdl, addr, offs, prot)
   1602 	void *hdl;
   1603 	void *addr;
   1604 	int offs;
   1605 	int prot;
   1606 {
   1607 	struct eso_softc *sc = hdl;
   1608 	struct eso_dma *ed;
   1609 
   1610 	if (offs < 0)
   1611 		return (-1);
   1612 	for (ed = sc->sc_dmas; ed != NULL && KVADDR(ed) != addr;
   1613 	     ed = ed->ed_next)
   1614 		;
   1615 	if (ed == NULL)
   1616 		return (-1);
   1617 
   1618 	return (bus_dmamem_mmap(ed->ed_dmat, ed->ed_segs, ed->ed_nsegs,
   1619 	    offs, prot, BUS_DMA_WAITOK));
   1620 }
   1621 
   1622 /* ARGSUSED */
   1623 static int
   1624 eso_get_props(hdl)
   1625 	void *hdl;
   1626 {
   1627 
   1628 	return (AUDIO_PROP_MMAP | AUDIO_PROP_INDEPENDENT |
   1629 	    AUDIO_PROP_FULLDUPLEX);
   1630 }
   1631 
   1632 static int
   1633 eso_trigger_output(hdl, start, end, blksize, intr, arg, param)
   1634 	void *hdl;
   1635 	void *start, *end;
   1636 	int blksize;
   1637 	void (*intr) __P((void *));
   1638 	void *arg;
   1639 	struct audio_params *param;
   1640 {
   1641 	struct eso_softc *sc = hdl;
   1642 	struct eso_dma *ed;
   1643 	uint8_t a2c1;
   1644 
   1645 	DPRINTF((
   1646 	    "%s: trigger_output: start %p, end %p, blksize %d, intr %p(%p)\n",
   1647 	    sc->sc_dev.dv_xname, start, end, blksize, intr, arg));
   1648 	DPRINTF(("%s: param: rate %lu, encoding %u, precision %u, channels %u, sw_code %p, factor %d\n",
   1649 	    sc->sc_dev.dv_xname, param->sample_rate, param->encoding,
   1650 	    param->precision, param->channels, param->sw_code, param->factor));
   1651 
   1652 	/* Find DMA buffer. */
   1653 	for (ed = sc->sc_dmas; ed != NULL && KVADDR(ed) != start;
   1654 	     ed = ed->ed_next)
   1655 		;
   1656 	if (ed == NULL) {
   1657 		printf("%s: trigger_output: bad addr %p\n",
   1658 		    sc->sc_dev.dv_xname, start);
   1659 		return (EINVAL);
   1660 	}
   1661 
   1662 	sc->sc_pintr = intr;
   1663 	sc->sc_parg = arg;
   1664 
   1665 	/* Compute drain timeout. */
   1666 	sc->sc_pdrain = (blksize * NBBY * hz) /
   1667 	    (param->sample_rate * param->channels *
   1668 	     param->precision * param->factor) + 2;	/* slop */
   1669 
   1670 	/* DMA transfer count (in `words'!) reload using 2's complement. */
   1671 	blksize = -(blksize >> 1);
   1672 	eso_write_mixreg(sc, ESO_MIXREG_A2TCRLO, blksize & 0xff);
   1673 	eso_write_mixreg(sc, ESO_MIXREG_A2TCRHI, blksize >> 8);
   1674 
   1675 	/* Update DAC to reflect DMA count and audio parameters. */
   1676 	/* Note: we cache A2C2 in order to avoid r/m/w at interrupt time. */
   1677 	if (param->precision * param->factor == 16)
   1678 		sc->sc_a2c2 |= ESO_MIXREG_A2C2_16BIT;
   1679 	else
   1680 		sc->sc_a2c2 &= ~ESO_MIXREG_A2C2_16BIT;
   1681 	if (param->channels == 2)
   1682 		sc->sc_a2c2 |= ESO_MIXREG_A2C2_STEREO;
   1683 	else
   1684 		sc->sc_a2c2 &= ~ESO_MIXREG_A2C2_STEREO;
   1685 	if (param->encoding == AUDIO_ENCODING_SLINEAR_BE ||
   1686 	    param->encoding == AUDIO_ENCODING_SLINEAR_LE)
   1687 		sc->sc_a2c2 |= ESO_MIXREG_A2C2_SIGNED;
   1688 	else
   1689 		sc->sc_a2c2 &= ~ESO_MIXREG_A2C2_SIGNED;
   1690 	/* Unmask IRQ. */
   1691 	sc->sc_a2c2 |= ESO_MIXREG_A2C2_IRQM;
   1692 	eso_write_mixreg(sc, ESO_MIXREG_A2C2, sc->sc_a2c2);
   1693 
   1694 	/* Set up DMA controller. */
   1695 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ESO_IO_A2DMAA,
   1696 	    DMAADDR(ed));
   1697 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, ESO_IO_A2DMAC,
   1698 	    (uint8_t *)end - (uint8_t *)start);
   1699 	bus_space_write_1(sc->sc_iot, sc->sc_ioh, ESO_IO_A2DMAM,
   1700 	    ESO_IO_A2DMAM_DMAENB | ESO_IO_A2DMAM_AUTO);
   1701 
   1702 	/* Start DMA. */
   1703 	a2c1 = eso_read_mixreg(sc, ESO_MIXREG_A2C1);
   1704 	a2c1 &= ~ESO_MIXREG_A2C1_RESV0; /* Paranoia? XXX bit 5 */
   1705 	a2c1 |= ESO_MIXREG_A2C1_FIFOENB | ESO_MIXREG_A2C1_DMAENB |
   1706 	    ESO_MIXREG_A2C1_AUTO;
   1707 	eso_write_mixreg(sc, ESO_MIXREG_A2C1, a2c1);
   1708 
   1709 	return (0);
   1710 }
   1711 
   1712 static int
   1713 eso_trigger_input(hdl, start, end, blksize, intr, arg, param)
   1714 	void *hdl;
   1715 	void *start, *end;
   1716 	int blksize;
   1717 	void (*intr) __P((void *));
   1718 	void *arg;
   1719 	struct audio_params *param;
   1720 {
   1721 	struct eso_softc *sc = hdl;
   1722 	struct eso_dma *ed;
   1723 	uint8_t actl, a1c1;
   1724 
   1725 	DPRINTF((
   1726 	    "%s: trigger_input: start %p, end %p, blksize %d, intr %p(%p)\n",
   1727 	    sc->sc_dev.dv_xname, start, end, blksize, intr, arg));
   1728 	DPRINTF(("%s: param: rate %lu, encoding %u, precision %u, channels %u, sw_code %p, factor %d\n",
   1729 	    sc->sc_dev.dv_xname, param->sample_rate, param->encoding,
   1730 	    param->precision, param->channels, param->sw_code, param->factor));
   1731 
   1732 	/*
   1733 	 * If we failed to configure the Audio 1 DMA controller, bail here
   1734 	 * while retaining availability of the DAC direction (in Audio 2).
   1735 	 */
   1736 	if (!sc->sc_dmac_configured)
   1737 		return (EIO);
   1738 
   1739 	/* Find DMA buffer. */
   1740 	for (ed = sc->sc_dmas; ed != NULL && KVADDR(ed) != start;
   1741 	     ed = ed->ed_next)
   1742 		;
   1743 	if (ed == NULL) {
   1744 		printf("%s: trigger_output: bad addr %p\n",
   1745 		    sc->sc_dev.dv_xname, start);
   1746 		return (EINVAL);
   1747 	}
   1748 
   1749 	sc->sc_rintr = intr;
   1750 	sc->sc_rarg = arg;
   1751 
   1752 	/* Compute drain timeout. */
   1753 	sc->sc_rdrain = (blksize * NBBY * hz) /
   1754 	    (param->sample_rate * param->channels *
   1755 	     param->precision * param->factor) + 2;	/* slop */
   1756 
   1757 	/* Set up ADC DMA converter parameters. */
   1758 	actl = eso_read_ctlreg(sc, ESO_CTLREG_ACTL);
   1759 	if (param->channels == 2) {
   1760 		actl &= ~ESO_CTLREG_ACTL_MONO;
   1761 		actl |= ESO_CTLREG_ACTL_STEREO;
   1762 	} else {
   1763 		actl &= ~ESO_CTLREG_ACTL_STEREO;
   1764 		actl |= ESO_CTLREG_ACTL_MONO;
   1765 	}
   1766 	eso_write_ctlreg(sc, ESO_CTLREG_ACTL, actl);
   1767 
   1768 	/* Set up Transfer Type: maybe move to attach time? */
   1769 	eso_write_ctlreg(sc, ESO_CTLREG_A1TT, ESO_CTLREG_A1TT_DEMAND4);
   1770 
   1771 	/* DMA transfer count reload using 2's complement. */
   1772 	blksize = -blksize;
   1773 	eso_write_ctlreg(sc, ESO_CTLREG_A1TCRLO, blksize & 0xff);
   1774 	eso_write_ctlreg(sc, ESO_CTLREG_A1TCRHI, blksize >> 8);
   1775 
   1776 	/* Set up and enable Audio 1 DMA FIFO. */
   1777 	a1c1 = ESO_CTLREG_A1C1_RESV1 | ESO_CTLREG_A1C1_FIFOENB;
   1778 	if (param->precision * param->factor == 16)
   1779 		a1c1 |= ESO_CTLREG_A1C1_16BIT;
   1780 	if (param->channels == 2)
   1781 		a1c1 |= ESO_CTLREG_A1C1_STEREO;
   1782 	else
   1783 		a1c1 |= ESO_CTLREG_A1C1_MONO;
   1784 	if (param->encoding == AUDIO_ENCODING_SLINEAR_BE ||
   1785 	    param->encoding == AUDIO_ENCODING_SLINEAR_LE)
   1786 		a1c1 |= ESO_CTLREG_A1C1_SIGNED;
   1787 	eso_write_ctlreg(sc, ESO_CTLREG_A1C1, a1c1);
   1788 
   1789 	/* Set up ADC IRQ/DRQ parameters. */
   1790 	eso_write_ctlreg(sc, ESO_CTLREG_LAIC,
   1791 	    ESO_CTLREG_LAIC_PINENB | ESO_CTLREG_LAIC_EXTENB);
   1792 	eso_write_ctlreg(sc, ESO_CTLREG_DRQCTL,
   1793 	    ESO_CTLREG_DRQCTL_ENB1 | ESO_CTLREG_DRQCTL_EXTENB);
   1794 
   1795 	/* Set up and enable DMA controller. */
   1796 	bus_space_write_1(sc->sc_dmac_iot, sc->sc_dmac_ioh, ESO_DMAC_CLEAR, 0);
   1797 	bus_space_write_1(sc->sc_dmac_iot, sc->sc_dmac_ioh, ESO_DMAC_MASK,
   1798 	    ESO_DMAC_MASK_MASK);
   1799 	bus_space_write_1(sc->sc_dmac_iot, sc->sc_dmac_ioh, ESO_DMAC_MODE,
   1800 	    DMA37MD_WRITE | DMA37MD_LOOP | DMA37MD_DEMAND);
   1801 	bus_space_write_4(sc->sc_dmac_iot, sc->sc_dmac_ioh, ESO_DMAC_DMAA,
   1802 	    DMAADDR(ed));
   1803 	bus_space_write_2(sc->sc_dmac_iot, sc->sc_dmac_ioh, ESO_DMAC_DMAC,
   1804 	    (uint8_t *)end - (uint8_t *)start - 1);
   1805 	bus_space_write_1(sc->sc_dmac_iot, sc->sc_dmac_ioh, ESO_DMAC_MASK, 0);
   1806 
   1807 	/* Start DMA. */
   1808 	eso_write_ctlreg(sc, ESO_CTLREG_A1C2,
   1809 	    ESO_CTLREG_A1C2_DMAENB | ESO_CTLREG_A1C2_READ |
   1810 	    ESO_CTLREG_A1C2_AUTO | ESO_CTLREG_A1C2_ADC);
   1811 
   1812 	return (0);
   1813 }
   1814 
   1815 static int
   1816 eso_set_monooutsrc(sc, monooutsrc)
   1817 	struct eso_softc *sc;
   1818 	unsigned int monooutsrc;
   1819 {
   1820 	mixer_devinfo_t di;
   1821 	int i;
   1822 	uint8_t mpm;
   1823 
   1824 	di.index = ESO_MONOOUT_SOURCE;
   1825 	if (eso_query_devinfo(sc, &di) != 0)
   1826 		panic("eso_set_monooutsrc: eso_query_devinfo failed");
   1827 
   1828 	for (i = 0; i < di.un.e.num_mem; i++) {
   1829 		if (monooutsrc == di.un.e.member[i].ord) {
   1830 			mpm = eso_read_mixreg(sc, ESO_MIXREG_MPM);
   1831 			mpm &= ~ESO_MIXREG_MPM_MOMASK;
   1832 			mpm |= monooutsrc;
   1833 			eso_write_mixreg(sc, ESO_MIXREG_MPM, mpm);
   1834 			sc->sc_monooutsrc = monooutsrc;
   1835 			return (0);
   1836 		}
   1837 	}
   1838 
   1839 	return (EINVAL);
   1840 }
   1841 
   1842 static int
   1843 eso_set_recsrc(sc, recsrc)
   1844 	struct eso_softc *sc;
   1845 	unsigned int recsrc;
   1846 {
   1847 	mixer_devinfo_t di;
   1848 	int i;
   1849 
   1850 	di.index = ESO_RECORD_SOURCE;
   1851 	if (eso_query_devinfo(sc, &di) != 0)
   1852 		panic("eso_set_recsrc: eso_query_devinfo failed");
   1853 
   1854 	for (i = 0; i < di.un.e.num_mem; i++) {
   1855 		if (recsrc == di.un.e.member[i].ord) {
   1856 			eso_write_mixreg(sc, ESO_MIXREG_ERS, recsrc);
   1857 			sc->sc_recsrc = recsrc;
   1858 			return (0);
   1859 		}
   1860 	}
   1861 
   1862 	return (EINVAL);
   1863 }
   1864 
   1865 /*
   1866  * Reload Master Volume and Mute values in softc from mixer; used when
   1867  * those have previously been invalidated by use of hardware volume controls.
   1868  */
   1869 static void
   1870 eso_reload_master_vol(sc)
   1871 	struct eso_softc *sc;
   1872 {
   1873 	uint8_t mv;
   1874 
   1875 	mv = eso_read_mixreg(sc, ESO_MIXREG_LMVM);
   1876 	sc->sc_gain[ESO_MASTER_VOL][ESO_LEFT] =
   1877 	    (mv & ~ESO_MIXREG_LMVM_MUTE) << 2;
   1878 	mv = eso_read_mixreg(sc, ESO_MIXREG_LMVM);
   1879 	sc->sc_gain[ESO_MASTER_VOL][ESO_RIGHT] =
   1880 	    (mv & ~ESO_MIXREG_RMVM_MUTE) << 2;
   1881 	/* Currently both channels are muted simultaneously; either is OK. */
   1882 	sc->sc_mvmute = (mv & ESO_MIXREG_RMVM_MUTE) != 0;
   1883 }
   1884 
   1885 static void
   1886 eso_set_gain(sc, port)
   1887 	struct eso_softc *sc;
   1888 	unsigned int port;
   1889 {
   1890 	uint8_t mixreg, tmp;
   1891 
   1892 	switch (port) {
   1893 	case ESO_DAC_PLAY_VOL:
   1894 		mixreg = ESO_MIXREG_PVR_A2;
   1895 		break;
   1896 	case ESO_MIC_PLAY_VOL:
   1897 		mixreg = ESO_MIXREG_PVR_MIC;
   1898 		break;
   1899 	case ESO_LINE_PLAY_VOL:
   1900 		mixreg = ESO_MIXREG_PVR_LINE;
   1901 		break;
   1902 	case ESO_SYNTH_PLAY_VOL:
   1903 		mixreg = ESO_MIXREG_PVR_SYNTH;
   1904 		break;
   1905 	case ESO_CD_PLAY_VOL:
   1906 		mixreg = ESO_MIXREG_PVR_CD;
   1907 		break;
   1908 	case ESO_AUXB_PLAY_VOL:
   1909 		mixreg = ESO_MIXREG_PVR_AUXB;
   1910 		break;
   1911 
   1912 	case ESO_DAC_REC_VOL:
   1913 		mixreg = ESO_MIXREG_RVR_A2;
   1914 		break;
   1915 	case ESO_MIC_REC_VOL:
   1916 		mixreg = ESO_MIXREG_RVR_MIC;
   1917 		break;
   1918 	case ESO_LINE_REC_VOL:
   1919 		mixreg = ESO_MIXREG_RVR_LINE;
   1920 		break;
   1921 	case ESO_SYNTH_REC_VOL:
   1922 		mixreg = ESO_MIXREG_RVR_SYNTH;
   1923 		break;
   1924 	case ESO_CD_REC_VOL:
   1925 		mixreg = ESO_MIXREG_RVR_CD;
   1926 		break;
   1927 	case ESO_AUXB_REC_VOL:
   1928 		mixreg = ESO_MIXREG_RVR_AUXB;
   1929 		break;
   1930 	case ESO_MONO_PLAY_VOL:
   1931 		mixreg = ESO_MIXREG_PVR_MONO;
   1932 		break;
   1933 	case ESO_MONO_REC_VOL:
   1934 		mixreg = ESO_MIXREG_RVR_MONO;
   1935 		break;
   1936 
   1937 	case ESO_PCSPEAKER_VOL:
   1938 		/* Special case - only 3-bit, mono, and reserved bits. */
   1939 		tmp = eso_read_mixreg(sc, ESO_MIXREG_PCSVR);
   1940 		tmp &= ESO_MIXREG_PCSVR_RESV;
   1941 		/* Map bits 7:5 -> 2:0. */
   1942 		tmp |= (sc->sc_gain[port][ESO_LEFT] >> 5);
   1943 		eso_write_mixreg(sc, ESO_MIXREG_PCSVR, tmp);
   1944 		return;
   1945 
   1946 	case ESO_MASTER_VOL:
   1947 		/* Special case - separate regs, and 6-bit precision. */
   1948 		/* Map bits 7:2 -> 5:0, reflect mute settings. */
   1949 		eso_write_mixreg(sc, ESO_MIXREG_LMVM,
   1950 		    (sc->sc_gain[port][ESO_LEFT] >> 2) |
   1951 		    (sc->sc_mvmute ? ESO_MIXREG_LMVM_MUTE : 0x00));
   1952 		eso_write_mixreg(sc, ESO_MIXREG_RMVM,
   1953 		    (sc->sc_gain[port][ESO_RIGHT] >> 2) |
   1954 		    (sc->sc_mvmute ? ESO_MIXREG_RMVM_MUTE : 0x00));
   1955 		return;
   1956 
   1957 	case ESO_SPATIALIZER:
   1958 		/* Special case - only `mono', and higher precision. */
   1959 		eso_write_mixreg(sc, ESO_MIXREG_SPATLVL,
   1960 		    sc->sc_gain[port][ESO_LEFT]);
   1961 		return;
   1962 
   1963 	case ESO_RECORD_VOL:
   1964 		/* Very Special case, controller register. */
   1965 		eso_write_ctlreg(sc, ESO_CTLREG_RECLVL,ESO_4BIT_GAIN_TO_STEREO(
   1966 		   sc->sc_gain[port][ESO_LEFT], sc->sc_gain[port][ESO_RIGHT]));
   1967 		return;
   1968 
   1969 	default:
   1970 #ifdef DIAGNOSTIC
   1971 		panic("eso_set_gain: bad port %u", port);
   1972 		/* NOTREACHED */
   1973 #else
   1974 		return;
   1975 #endif
   1976 		}
   1977 
   1978 	eso_write_mixreg(sc, mixreg, ESO_4BIT_GAIN_TO_STEREO(
   1979 	    sc->sc_gain[port][ESO_LEFT], sc->sc_gain[port][ESO_RIGHT]));
   1980 }
   1981