/*      $NetBSD: eap.c,v 1.103 2024/05/17 12:20:02 nia Exp $    */
/*      $OpenBSD: eap.c,v 1.6 1999/10/05 19:24:42 csapuntz Exp $ */

/*
 * Copyright (c) 1998, 1999, 2002, 2008 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Lennart Augustsson <augustss@NetBSD.org>, Charles M. Hannum,
 * Antti Kantee <pooka@NetBSD.org>, and Andrew Doran.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

/*
 * Debugging:   Andreas Gustafsson <gson@araneus.fi>
 * Testing:     Chuck Cranor       <chuck@maria.wustl.edu>
 *              Phil Nelson        <phil@cs.wwu.edu>
 *
 * ES1371/AC97: Ezra Story         <ezy@panix.com>
 */

/*
 * Ensoniq ES1370 + AK4531 and ES1371/ES1373 + AC97
 *
 * Documentation links:
 *
 * ftp://ftp.alsa-project.org/pub/manuals/ensoniq/ (ES1370 and 1371 datasheets)
 * http://web.archive.org/web/20040622012936/http://www.corbac.com/Data/Misc/es1373.ps.gz
 * ftp://ftp.alsa-project.org/pub/manuals/asahi_kasei/4531.pdf
 * ftp://download.intel.com/ial/scalableplatforms/audio/ac97r21.pdf
 */

/*
 * TODO:
 * - Remove DAC1 and secondary audio device support.
 */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: eap.c,v 1.103 2024/05/17 12:20:02 nia Exp $");

#include "midi.h"
#include "joy_eap.h"

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/fcntl.h>
#include <sys/kmem.h>
#include <sys/device.h>
#include <sys/proc.h>
#include <sys/select.h>
#include <sys/mutex.h>
#include <sys/bus.h>
#include <sys/audioio.h>

#include <dev/audio/audio_if.h>
#include <dev/midi_if.h>

#include <dev/pci/pcidevs.h>
#include <dev/pci/eapreg.h>
#include <dev/pci/eapvar.h>

#define PCI_CBIO                0x10

/* Debug */
#ifdef AUDIO_DEBUG
#define DPRINTF(x)      if (eapdebug) printf x
#define DPRINTFN(n,x)   if (eapdebug>(n)) printf x
int     eapdebug = 0;
#else
#define DPRINTF(x)
#define DPRINTFN(n,x)
#endif

static int      eap_match(device_t, cfdata_t, void *);
static void     eap_attach(device_t, device_t, void *);
static int      eap_detach(device_t, int);
static int      eap_intr(void *);

static int      eap_allocmem(struct eap_softc *, size_t, size_t,
                             struct eap_dma *);
static int      eap_freemem(struct eap_softc *, struct eap_dma *);

#define EWRITE1(sc, r, x) bus_space_write_1((sc)->iot, (sc)->ioh, (r), (x))
#define EWRITE2(sc, r, x) bus_space_write_2((sc)->iot, (sc)->ioh, (r), (x))
#define EWRITE4(sc, r, x) bus_space_write_4((sc)->iot, (sc)->ioh, (r), (x))
#define EREAD1(sc, r) bus_space_read_1((sc)->iot, (sc)->ioh, (r))
#define EREAD2(sc, r) bus_space_read_2((sc)->iot, (sc)->ioh, (r))
#define EREAD4(sc, r) bus_space_read_4((sc)->iot, (sc)->ioh, (r))

CFATTACH_DECL_NEW(eap, sizeof(struct eap_softc),
    eap_match, eap_attach, eap_detach, NULL);

static int      eap_open(void *, int);
static int      eap_query_format(void *, struct audio_format_query *);
static int      eap_set_format(void *, int,
                               const audio_params_t *, const audio_params_t *,
                               audio_filter_reg_t *, audio_filter_reg_t *);
static int      eap_trigger_output(void *, void *, void *, int,
                                   void (*)(void *), void *,
                                   const audio_params_t *);
static int      eap_trigger_input(void *, void *, void *, int,
                                  void (*)(void *), void *,
                                  const audio_params_t *);
static int      eap_halt_output(void *);
static int      eap_halt_input(void *);
static void     eap1370_write_codec(struct eap_softc *, int, int);
static int      eap_getdev(void *, struct audio_device *);
static int      eap1370_mixer_set_port(void *, mixer_ctrl_t *);
static int      eap1370_mixer_get_port(void *, mixer_ctrl_t *);
static int      eap1371_mixer_set_port(void *, mixer_ctrl_t *);
static int      eap1371_mixer_get_port(void *, mixer_ctrl_t *);
static int      eap1370_query_devinfo(void *, mixer_devinfo_t *);
static void     *eap_malloc(void *, int, size_t);
static void     eap_free(void *, void *, size_t);
static int      eap_get_props(void *);
static void     eap1370_set_mixer(struct eap_softc *, int, int);
static uint32_t eap1371_src_wait(struct eap_softc *);
static void     eap1371_set_adc_rate(struct eap_softc *, int);
static void     eap1371_set_dac_rate(struct eap_instance *, int);
static int      eap1371_src_read(struct eap_softc *, u_int);
static void     eap1371_src_write(struct eap_softc *, u_int, int);
static int      eap1371_query_devinfo(void *, mixer_devinfo_t *);

static int      eap1371_attach_codec(void *, struct ac97_codec_if *);
static int      eap1371_read_codec(void *, uint8_t, uint16_t *);
static int      eap1371_write_codec(void *, uint8_t, uint16_t );
static int      eap1371_reset_codec(void *);
static void     eap_get_locks(void *, kmutex_t **, kmutex_t **);

#if NMIDI > 0
static void     eap_midi_close(void *);
static void     eap_midi_getinfo(void *, struct midi_info *);
static int      eap_midi_open(void *, int, void (*)(void *, int),
                              void (*)(void *), void *);
static int      eap_midi_output(void *, int);
static void     eap_uart_txrdy(struct eap_softc *);
#endif

static const struct audio_hw_if eap1370_hw_if = {
        .open                   = eap_open,
        .query_format           = eap_query_format,
        .set_format             = eap_set_format,
        .halt_output            = eap_halt_output,
        .halt_input             = eap_halt_input,
        .getdev                 = eap_getdev,
        .set_port               = eap1370_mixer_set_port,
        .get_port               = eap1370_mixer_get_port,
        .query_devinfo          = eap1370_query_devinfo,
        .allocm                 = eap_malloc,
        .freem                  = eap_free,
        .get_props              = eap_get_props,
        .trigger_output         = eap_trigger_output,
        .trigger_input          = eap_trigger_input,
        .get_locks              = eap_get_locks,
};

static const struct audio_hw_if eap1371_hw_if = {
        .open                   = eap_open,
        .query_format           = eap_query_format,
        .set_format             = eap_set_format,
        .halt_output            = eap_halt_output,
        .halt_input             = eap_halt_input,
        .getdev                 = eap_getdev,
        .set_port               = eap1371_mixer_set_port,
        .get_port               = eap1371_mixer_get_port,
        .query_devinfo          = eap1371_query_devinfo,
        .allocm                 = eap_malloc,
        .freem                  = eap_free,
        .get_props              = eap_get_props,
        .trigger_output         = eap_trigger_output,
        .trigger_input          = eap_trigger_input,
        .get_locks              = eap_get_locks,
};

#if NMIDI > 0
static const struct midi_hw_if eap_midi_hw_if = {
        eap_midi_open,
        eap_midi_close,
        eap_midi_output,
        eap_midi_getinfo,
        0,                              /* ioctl */
        eap_get_locks,
};
#endif

static struct audio_device eap_device = {
        "Ensoniq AudioPCI",
        "",
        "eap"
};

static const struct audio_format eap_formats[] = {
        {
                .mode           = AUMODE_PLAY | AUMODE_RECORD,
                .encoding       = AUDIO_ENCODING_SLINEAR_LE,
                .validbits      = 16,
                .precision      = 16,
                .channels       = 2,
                .channel_mask   = AUFMT_STEREO,
                .frequency_type = 0,
                .frequency      = { 4000, 48000 },
        },
        {
                .mode           = AUMODE_PLAY | AUMODE_RECORD,
                .encoding       = AUDIO_ENCODING_SLINEAR_LE,
                .validbits      = 16,
                .precision      = 16,
                .channels       = 1,
                .channel_mask   = AUFMT_MONAURAL,
                .frequency_type = 0,
                .frequency      = { 4000, 48000 },
        },
        {
                .mode           = AUMODE_PLAY | AUMODE_RECORD,
                .encoding       = AUDIO_ENCODING_ULINEAR_LE,
                .validbits      = 8,
                .precision      = 8,
                .channels       = 2,
                .channel_mask   = AUFMT_STEREO,
                .frequency_type = 0,
                .frequency      = { 4000, 48000 },
        },
        {
                .mode           = AUMODE_PLAY | AUMODE_RECORD,
                .encoding       = AUDIO_ENCODING_ULINEAR_LE,
                .validbits      = 8,
                .precision      = 8,
                .channels       = 1,
                .channel_mask   = AUFMT_MONAURAL,
                .frequency_type = 0,
                .frequency      = { 4000, 48000 },
        }
};
#define EAP_NFORMATS    __arraycount(eap_formats)

static int
eap_match(device_t parent, cfdata_t match, void *aux)
{
        struct pci_attach_args *pa;

        pa = (struct pci_attach_args *)aux;
        switch (PCI_VENDOR(pa->pa_id)) {
        case PCI_VENDOR_CREATIVELABS:
                switch (PCI_PRODUCT(pa->pa_id)) {
                case PCI_PRODUCT_CREATIVELABS_EV1938:
                        return 1;
                }
                break;
        case PCI_VENDOR_ENSONIQ:
                switch (PCI_PRODUCT(pa->pa_id)) {
                case PCI_PRODUCT_ENSONIQ_AUDIOPCI:
                case PCI_PRODUCT_ENSONIQ_AUDIOPCI97:
                case PCI_PRODUCT_ENSONIQ_CT5880:
                        return 1;
                }
                break;
        }

        return 0;
}

static void
eap1370_write_codec(struct eap_softc *sc, int a, int d)
{
        int icss, to;

        to = EAP_WRITE_TIMEOUT;
        do {
                icss = EREAD4(sc, EAP_ICSS);
                DPRINTFN(5,("eap: codec %d prog: icss=0x%08x\n", a, icss));
                if (!to--) {
                        printf("eap: timeout writing to codec\n");
                        return;
                }
        } while(icss & EAP_CWRIP);  /* XXX could use CSTAT here */
        EWRITE4(sc, EAP_CODEC, EAP_SET_CODEC(a, d));
}

/*
 * Reading and writing the CODEC is very convoluted.  This mimics the
 * FreeBSD and Linux drivers.
 */

static inline void
eap1371_ready_codec(struct eap_softc *sc, uint8_t a, uint32_t wd)
{
        int to;
        uint32_t src, t;

        for (to = 0; to < EAP_WRITE_TIMEOUT; to++) {
                if (!(EREAD4(sc, E1371_CODEC) & E1371_CODEC_WIP))
                        break;
                delay(1);
        }
        if (to >= EAP_WRITE_TIMEOUT)
                aprint_error_dev(sc->sc_dev,
                    "eap1371_ready_codec timeout 1\n");

        mutex_spin_enter(&sc->sc_intr_lock);
        src = eap1371_src_wait(sc) & E1371_SRC_CTLMASK;
        EWRITE4(sc, E1371_SRC, src | E1371_SRC_STATE_OK);

        for (to = 0; to < EAP_READ_TIMEOUT; to++) {
                t = EREAD4(sc, E1371_SRC);
                if ((t & E1371_SRC_STATE_MASK) == 0)
                        break;
                delay(1);
        }
        if (to >= EAP_READ_TIMEOUT)
                aprint_error_dev(sc->sc_dev,
                    "eap1371_ready_codec timeout 2\n");

        for (to = 0; to < EAP_READ_TIMEOUT; to++) {
                t = EREAD4(sc, E1371_SRC);
                if ((t & E1371_SRC_STATE_MASK) == E1371_SRC_STATE_OK)
                        break;
                delay(1);
        }
        if (to >= EAP_READ_TIMEOUT)
                aprint_error_dev(sc->sc_dev,
                    "eap1371_ready_codec timeout 3\n");

        EWRITE4(sc, E1371_CODEC, wd);

        eap1371_src_wait(sc);
        EWRITE4(sc, E1371_SRC, src);

        mutex_spin_exit(&sc->sc_intr_lock);
}

static int
eap1371_read_codec(void *sc_, uint8_t a, uint16_t *d)
{
        struct eap_softc *sc;
        int to;
        uint32_t t;

        sc = sc_;
        eap1371_ready_codec(sc, a, E1371_SET_CODEC(a, 0) | E1371_CODEC_READ);

        for (to = 0; to < EAP_WRITE_TIMEOUT; to++) {
                if (!(EREAD4(sc, E1371_CODEC) & E1371_CODEC_WIP))
                        break;
        }
        if (to > EAP_WRITE_TIMEOUT)
                aprint_error_dev(sc->sc_dev,
                    "eap1371_read_codec timeout 1\n");

        for (to = 0; to < EAP_WRITE_TIMEOUT; to++) {
                t = EREAD4(sc, E1371_CODEC);
                if (t & E1371_CODEC_VALID)
                        break;
        }
        if (to > EAP_WRITE_TIMEOUT)
                aprint_error_dev(sc->sc_dev, "eap1371_read_codec timeout 2\n");

        *d = (uint16_t)t;

        DPRINTFN(10, ("eap1371: reading codec (%x) = %x\n", a, *d));

        return 0;
}

static int
eap1371_write_codec(void *sc_, uint8_t a, uint16_t d)
{
        struct eap_softc *sc;

        sc = sc_;
        eap1371_ready_codec(sc, a, E1371_SET_CODEC(a, d));

        DPRINTFN(10, ("eap1371: writing codec %x --> %x\n", d, a));

        return 0;
}

static uint32_t
eap1371_src_wait(struct eap_softc *sc)
{
        int to;
        u_int32_t src;

        for (to = 0; to < EAP_READ_TIMEOUT; to++) {
                src = EREAD4(sc, E1371_SRC);
                if (!(src & E1371_SRC_RBUSY))
                        return src;
                delay(1);
        }
        aprint_error_dev(sc->sc_dev, "eap1371_src_wait timeout\n");
        return src;
}

static int
eap1371_src_read(struct eap_softc *sc, u_int a)
{
        int to;
        uint32_t src, t;

        src = eap1371_src_wait(sc) & E1371_SRC_CTLMASK;
        src |= E1371_SRC_ADDR(a);
        EWRITE4(sc, E1371_SRC, src | E1371_SRC_STATE_OK);

        t = eap1371_src_wait(sc);
        if ((t & E1371_SRC_STATE_MASK) != E1371_SRC_STATE_OK) {
                for (to = 0; to < EAP_READ_TIMEOUT; to++) {
                        t = EREAD4(sc, E1371_SRC);
                        if ((t & E1371_SRC_STATE_MASK) == E1371_SRC_STATE_OK)
                                break;
                        delay(1);
                }
        }

        EWRITE4(sc, E1371_SRC, src);

        return t & E1371_SRC_DATAMASK;
}

static void
eap1371_src_write(struct eap_softc *sc, u_int a, int d)
{
        uint32_t r;

        r = eap1371_src_wait(sc) & E1371_SRC_CTLMASK;
        r |= E1371_SRC_RAMWE | E1371_SRC_ADDR(a) | E1371_SRC_DATA(d);
        EWRITE4(sc, E1371_SRC, r);
}

static void
eap1371_set_adc_rate(struct eap_softc *sc, int rate)
{
        int freq, n, truncm;
        int out;

        /* Whatever, it works, so I'll leave it :) */

        if (rate > 48000)
                rate = 48000;
        if (rate < 4000)
                rate = 4000;
        n = rate / 3000;
        if ((1 << n) & SRC_MAGIC)
                n--;
        truncm = ((21 * n) - 1) | 1;
        freq = ((48000 << 15) / rate) * n;
        if (rate >= 24000) {
                if (truncm > 239)
                        truncm = 239;
                out = ESRC_SET_TRUNC((239 - truncm) / 2);
        } else {
                if (truncm > 119)
                        truncm = 119;
                out = ESRC_SMF | ESRC_SET_TRUNC((119 - truncm) / 2);
        }
        out |= ESRC_SET_N(n);
        mutex_spin_enter(&sc->sc_intr_lock);
        eap1371_src_write(sc, ESRC_ADC+ESRC_TRUNC_N, out);

        out = eap1371_src_read(sc, ESRC_ADC+ESRC_IREGS) & 0xff;
        eap1371_src_write(sc, ESRC_ADC+ESRC_IREGS, out |
                          ESRC_SET_VFI(freq >> 15));
        eap1371_src_write(sc, ESRC_ADC+ESRC_VFF, freq & 0x7fff);
        eap1371_src_write(sc, ESRC_ADC_VOLL, ESRC_SET_ADC_VOL(n));
        eap1371_src_write(sc, ESRC_ADC_VOLR, ESRC_SET_ADC_VOL(n));
        mutex_spin_exit(&sc->sc_intr_lock);
}

static void
eap1371_set_dac_rate(struct eap_instance *ei, int rate)
{
        struct eap_softc *sc;
        int dac;
        int freq, r;

        DPRINTFN(2, ("eap1371_set_dac_date: set rate for %d\n", ei->index));
        sc = device_private(ei->parent);
        dac = ei->index == EAP_DAC1 ? ESRC_DAC1 : ESRC_DAC2;

        /* Whatever, it works, so I'll leave it :) */

        if (rate > 48000)
            rate = 48000;
        if (rate < 4000)
            rate = 4000;
        freq = ((rate << 15) + 1500) / 3000;

        mutex_spin_enter(&sc->sc_intr_lock);
        eap1371_src_wait(sc);
        r = EREAD4(sc, E1371_SRC) & (E1371_SRC_DISABLE |
            E1371_SRC_DISP2 | E1371_SRC_DISP1 | E1371_SRC_DISREC);
        r |= ei->index == EAP_DAC1 ? E1371_SRC_DISP1 : E1371_SRC_DISP2;
        EWRITE4(sc, E1371_SRC, r);
        r = eap1371_src_read(sc, dac + ESRC_IREGS) & 0x00ff;
        eap1371_src_write(sc, dac + ESRC_IREGS, r | ((freq >> 5) & 0xfc00));
        eap1371_src_write(sc, dac + ESRC_VFF, freq & 0x7fff);
        r = EREAD4(sc, E1371_SRC) & (E1371_SRC_DISABLE |
            E1371_SRC_DISP2 | E1371_SRC_DISP1 | E1371_SRC_DISREC);
        r &= ~(ei->index == EAP_DAC1 ? E1371_SRC_DISP1 : E1371_SRC_DISP2);
        EWRITE4(sc, E1371_SRC, r);
        mutex_spin_exit(&sc->sc_intr_lock);
}

static void
eap_attach(device_t parent, device_t self, void *aux)
{
        struct eap_softc *sc;
        struct pci_attach_args *pa;
        pci_chipset_tag_t pc;
        const struct audio_hw_if *eap_hw_if;
        char const *intrstr;
        pci_intr_handle_t ih;
        pcireg_t csr;
        char devinfo[256];
        mixer_ctrl_t ctl;
        int i;
        int revision, ct5880;
        const char *revstr;
#if NJOY_EAP > 0
        struct eap_gameport_args gpargs;
#endif
        char intrbuf[PCI_INTRSTR_LEN];

        sc = device_private(self);
        sc->sc_dev = self;
        pa = (struct pci_attach_args *)aux;
        pc = pa->pa_pc;
        revstr = "";
        aprint_naive(": Audio controller\n");

        mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE);
        mutex_init(&sc->sc_intr_lock, MUTEX_DEFAULT, IPL_AUDIO);

        /* Stash this away for detach */
        sc->sc_pc = pc;

        /* Flag if we're "creative" */
        sc->sc_1371 = !(PCI_VENDOR(pa->pa_id) == PCI_VENDOR_ENSONIQ &&
                        PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ENSONIQ_AUDIOPCI);

        /*
         * The vendor and product ID's are quite "interesting". Just
         * trust the following and be happy.
         */
        pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo));
        revision = PCI_REVISION(pa->pa_class);
        ct5880 = 0;
        if (sc->sc_1371) {
                if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_ENSONIQ &&
                    PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ENSONIQ_CT5880) {
                        ct5880 = 1;
                        switch (revision) {
                        case EAP_CT5880_C: revstr = "CT5880-C "; break;
                        case EAP_CT5880_D: revstr = "CT5880-D "; break;
                        case EAP_CT5880_E: revstr = "CT5880-E "; break;
                        }
                } else {
                        switch (revision) {
                        case EAP_EV1938_A: revstr = "EV1938-A "; break;
                        case EAP_ES1373_A: revstr = "ES1373-A "; break;
                        case EAP_ES1373_B: revstr = "ES1373-B "; break;
                        case EAP_CT5880_A: revstr = "CT5880-A "; ct5880=1;break;
                        case EAP_ES1373_8: revstr = "ES1373-8" ; ct5880=1;break;
                        case EAP_ES1371_B: revstr = "ES1371-B "; break;
                        }
                }
        }
        aprint_normal(": %s %s(rev. 0x%02x)\n", devinfo, revstr, revision);

        /* Map I/O register */
        if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0,
              &sc->iot, &sc->ioh, NULL, &sc->iosz)) {
                aprint_error_dev(sc->sc_dev, "can't map i/o space\n");
                return;
        }

        sc->sc_dmatag = pa->pa_dmat;

        /* Enable the device. */
        csr = pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
        pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
                       csr | PCI_COMMAND_MASTER_ENABLE);

        /* Map and establish the interrupt. */
        if (pci_intr_map(pa, &ih)) {
                aprint_error_dev(sc->sc_dev, "couldn't map interrupt\n");
                return;
        }
        intrstr = pci_intr_string(pc, ih, intrbuf, sizeof(intrbuf));
        sc->sc_ih = pci_intr_establish_xname(pc, ih, IPL_AUDIO, eap_intr, sc,
            device_xname(self));
        if (sc->sc_ih == NULL) {
                aprint_error_dev(sc->sc_dev, "couldn't establish interrupt");
                if (intrstr != NULL)
                        aprint_error(" at %s", intrstr);
                aprint_error("\n");
                return;
        }
        aprint_normal_dev(self, "interrupting at %s\n", intrstr);

        sc->sc_ei[EAP_I1].parent = self;
        sc->sc_ei[EAP_I1].index = EAP_DAC2;
        sc->sc_ei[EAP_I2].parent = self;
        sc->sc_ei[EAP_I2].index = EAP_DAC1;

        if (!sc->sc_1371) {
                /* Enable interrupts and looping mode. */
                /* enable the parts we need */
                EWRITE4(sc, EAP_SIC, EAP_P2_INTR_EN | EAP_R1_INTR_EN);
                EWRITE4(sc, EAP_ICSC, EAP_CDC_EN);

                /* reset codec */
                /* normal operation */
                /* select codec clocks */
                eap1370_write_codec(sc, AK_RESET, AK_PD);
                eap1370_write_codec(sc, AK_RESET, AK_PD | AK_NRST);
                eap1370_write_codec(sc, AK_CS, 0x0);

                eap_hw_if = &eap1370_hw_if;

                /* Enable all relevant mixer switches. */
                ctl.dev = EAP_INPUT_SOURCE;
                ctl.type = AUDIO_MIXER_SET;
                ctl.un.mask = 1 << EAP_VOICE_VOL | 1 << EAP_FM_VOL |
                        1 << EAP_CD_VOL | 1 << EAP_LINE_VOL |
                        1 << EAP_AUX_VOL | 1 << EAP_MIC_VOL;
                eap_hw_if->set_port(&sc->sc_ei[EAP_I1], &ctl);

                ctl.type = AUDIO_MIXER_VALUE;
                ctl.un.value.num_channels = 1;
                for (ctl.dev = EAP_MASTER_VOL; ctl.dev < EAP_MIC_VOL;
                     ctl.dev++) {
                        ctl.un.value.level[AUDIO_MIXER_LEVEL_MONO] = VOL_0DB;
                        eap_hw_if->set_port(&sc->sc_ei[EAP_I1], &ctl);
                }
                ctl.un.value.level[AUDIO_MIXER_LEVEL_MONO] = 0;
                eap_hw_if->set_port(&sc->sc_ei[EAP_I1], &ctl);
                ctl.dev = EAP_MIC_PREAMP;
                ctl.type = AUDIO_MIXER_ENUM;
                ctl.un.ord = 0;
                eap_hw_if->set_port(&sc->sc_ei[EAP_I1], &ctl);
                ctl.dev = EAP_RECORD_SOURCE;
                ctl.type = AUDIO_MIXER_SET;
                ctl.un.mask = 1 << EAP_MIC_VOL;
                eap_hw_if->set_port(&sc->sc_ei[EAP_I1], &ctl);
        } else {
                /* clean slate */

                EWRITE4(sc, EAP_SIC, 0);
                EWRITE4(sc, EAP_ICSC, 0);
                EWRITE4(sc, E1371_LEGACY, 0);

                if (ct5880) {
                        EWRITE4(sc, EAP_ICSS, EAP_CT5880_AC97_RESET);
                        /* Let codec wake up */
                        delay(20000);
                }

                /* Reset from es1371's perspective */
                EWRITE4(sc, EAP_ICSC, E1371_SYNC_RES);
                delay(20);
                EWRITE4(sc, EAP_ICSC, 0);

                /*
                 * Must properly reprogram sample rate converter,
                 * or it locks up.  Set some defaults for the life of the
                 * machine, and set up a sb default sample rate.
                 */
                EWRITE4(sc, E1371_SRC, E1371_SRC_DISABLE);
                for (i = 0; i < 0x80; i++)
                        eap1371_src_write(sc, i, 0);
                eap1371_src_write(sc, ESRC_DAC1+ESRC_TRUNC_N, ESRC_SET_N(16));
                eap1371_src_write(sc, ESRC_DAC2+ESRC_TRUNC_N, ESRC_SET_N(16));
                eap1371_src_write(sc, ESRC_DAC1+ESRC_IREGS, ESRC_SET_VFI(16));
                eap1371_src_write(sc, ESRC_DAC2+ESRC_IREGS, ESRC_SET_VFI(16));
                eap1371_src_write(sc, ESRC_ADC_VOLL, ESRC_SET_ADC_VOL(16));
                eap1371_src_write(sc, ESRC_ADC_VOLR, ESRC_SET_ADC_VOL(16));
                eap1371_src_write(sc, ESRC_DAC1_VOLL, ESRC_SET_DAC_VOLI(1));
                eap1371_src_write(sc, ESRC_DAC1_VOLR, ESRC_SET_DAC_VOLI(1));
                eap1371_src_write(sc, ESRC_DAC2_VOLL, ESRC_SET_DAC_VOLI(1));
                eap1371_src_write(sc, ESRC_DAC2_VOLR, ESRC_SET_DAC_VOLI(1));
                eap1371_set_adc_rate(sc, 22050);
                eap1371_set_dac_rate(&sc->sc_ei[0], 22050);
                eap1371_set_dac_rate(&sc->sc_ei[1], 22050);

                EWRITE4(sc, E1371_SRC, 0);

                /* Reset codec */

                /* Interrupt enable */
                sc->host_if.arg = sc;
                sc->host_if.attach = eap1371_attach_codec;
                sc->host_if.read = eap1371_read_codec;
                sc->host_if.write = eap1371_write_codec;
                sc->host_if.reset = eap1371_reset_codec;

                if (ac97_attach(&sc->host_if, self, &sc->sc_lock) == 0) {
                        /* Interrupt enable */
                        EWRITE4(sc, EAP_SIC, EAP_P2_INTR_EN | EAP_R1_INTR_EN);
                } else
                        return;

                eap_hw_if = &eap1371_hw_if;
        }

        sc->sc_ei[EAP_I1].ei_audiodev =
            audio_attach_mi(eap_hw_if, &sc->sc_ei[EAP_I1], sc->sc_dev);

#ifdef EAP_USE_BOTH_DACS
        aprint_normal_dev(self, "attaching secondary DAC\n");
        sc->sc_ei[EAP_I2].ei_audiodev =
            audio_attach_mi(eap_hw_if, &sc->sc_ei[EAP_I2], sc->sc_dev);
#endif

#if NMIDI > 0
        sc->sc_mididev = midi_attach_mi(&eap_midi_hw_if, sc, sc->sc_dev);
#endif

#if NJOY_EAP > 0
        if (sc->sc_1371) {
                gpargs.gpa_iot = sc->iot;
                gpargs.gpa_ioh = sc->ioh;
                sc->sc_gameport = eap_joy_attach(sc->sc_dev, &gpargs);
        }
#endif
}

static int
eap_detach(device_t self, int flags)
{
        struct eap_softc *sc;
        int res;
#if NJOY_EAP > 0
        struct eap_gameport_args gpargs;

        sc = device_private(self);
        if (sc->sc_gameport) {
                gpargs.gpa_iot = sc->iot;
                gpargs.gpa_ioh = sc->ioh;
                res = eap_joy_detach(sc->sc_gameport, &gpargs);
                if (res)
                        return res;
        }
#else
        sc = device_private(self);
#endif
#if NMIDI > 0
        if (sc->sc_mididev != NULL) {
                res = config_detach(sc->sc_mididev, 0);
                if (res)
                        return res;
        }
#endif
#ifdef EAP_USE_BOTH_DACS
        if (sc->sc_ei[EAP_I2].ei_audiodev != NULL) {
                res = config_detach(sc->sc_ei[EAP_I2].ei_audiodev, 0);
                if (res)
                        return res;
        }
#endif
        if (sc->sc_ei[EAP_I1].ei_audiodev != NULL) {
                res = config_detach(sc->sc_ei[EAP_I1].ei_audiodev, 0);
                if (res)
                        return res;
        }

        bus_space_unmap(sc->iot, sc->ioh, sc->iosz);
        pci_intr_disestablish(sc->sc_pc, sc->sc_ih);
        mutex_destroy(&sc->sc_lock);
        mutex_destroy(&sc->sc_intr_lock);

        return 0;
}

static int
eap1371_attach_codec(void *sc_, struct ac97_codec_if *codec_if)
{
        struct eap_softc *sc;

        sc = sc_;
        sc->codec_if = codec_if;
        return 0;
}

static int
eap1371_reset_codec(void *sc_)
{
        struct eap_softc *sc;
        uint32_t icsc;

        sc = sc_;
        mutex_spin_enter(&sc->sc_intr_lock);
        icsc = EREAD4(sc, EAP_ICSC);
        EWRITE4(sc, EAP_ICSC, icsc | E1371_SYNC_RES);
        delay(20);
        EWRITE4(sc, EAP_ICSC, icsc & ~E1371_SYNC_RES);
        delay(1);
        mutex_spin_exit(&sc->sc_intr_lock);

        return 0;
}

static int
eap_intr(void *p)
{
        struct eap_softc *sc;
        uint32_t intr, sic;

        sc = p;
        mutex_spin_enter(&sc->sc_intr_lock);
        intr = EREAD4(sc, EAP_ICSS);
        if (!(intr & EAP_INTR)) {
                mutex_spin_exit(&sc->sc_intr_lock);
                return 0;
        }
        sic = EREAD4(sc, EAP_SIC);
        DPRINTFN(5, ("eap_intr: ICSS=0x%08x, SIC=0x%08x\n", intr, sic));
        if (intr & EAP_I_ADC) {
#if 0
                /*
                 * XXX This is a hack!
                 * The EAP chip sometimes generates the recording interrupt
                 * while it is still transferring the data.  To make sure
                 * it has all arrived we busy wait until the count is right.
                 * The transfer we are waiting for is 8 longwords.
                 */
                int s, nw, n;
                EWRITE4(sc, EAP_MEMPAGE, EAP_ADC_PAGE);
                s = EREAD4(sc, EAP_ADC_CSR);
                nw = ((s & 0xffff) + 1) >> 2; /* # of words in DMA */
                n = 0;
                while (((EREAD4(sc, EAP_ADC_SIZE) >> 16) + 8) % nw == 0) {
                        delay(10);
                        if (++n > 100) {
                                printf("eapintr: DMA fix timeout");
                                break;
                        }
                }
                /* Continue with normal interrupt handling. */
#endif
                EWRITE4(sc, EAP_SIC, sic & ~EAP_R1_INTR_EN);
                EWRITE4(sc, EAP_SIC, sic | EAP_R1_INTR_EN);
                if (sc->sc_rintr)
                        sc->sc_rintr(sc->sc_rarg);
        }

        if (intr & EAP_I_DAC2) {
                EWRITE4(sc, EAP_SIC, sic & ~EAP_P2_INTR_EN);
                EWRITE4(sc, EAP_SIC, sic | EAP_P2_INTR_EN);
                if (sc->sc_ei[EAP_DAC2].ei_pintr)
                        sc->sc_ei[EAP_DAC2].ei_pintr(sc->sc_ei[EAP_DAC2].ei_parg);
        }

        if (intr & EAP_I_DAC1) {
                EWRITE4(sc, EAP_SIC, sic & ~EAP_P1_INTR_EN);
                EWRITE4(sc, EAP_SIC, sic | EAP_P1_INTR_EN);
                if (sc->sc_ei[EAP_DAC1].ei_pintr)
                        sc->sc_ei[EAP_DAC1].ei_pintr(sc->sc_ei[EAP_DAC1].ei_parg);
        }

        if (intr & EAP_I_MCCB)
                panic("eap_intr: unexpected MCCB interrupt");
#if NMIDI > 0
        if (intr & EAP_I_UART) {
                uint8_t ustat;
                uint32_t data;
                
                ustat = EREAD1(sc, EAP_UART_STATUS);

                if (ustat & EAP_US_RXINT) {
                        while (EREAD1(sc, EAP_UART_STATUS) & EAP_US_RXRDY) {
                                data = EREAD1(sc, EAP_UART_DATA);
                                sc->sc_iintr(sc->sc_arg, data);
                        }
                }
                
                if (ustat & EAP_US_TXINT)
                        eap_uart_txrdy(sc);
        }
#endif
        mutex_spin_exit(&sc->sc_intr_lock);
        return 1;
}

static int
eap_allocmem(struct eap_softc *sc, size_t size, size_t align, struct eap_dma *p)
{
        int error;

        p->size = size;
        error = bus_dmamem_alloc(sc->sc_dmatag, p->size, align, 0,
                                 p->segs, sizeof(p->segs)/sizeof(p->segs[0]),
                                 &p->nsegs, BUS_DMA_WAITOK);
        if (error)
                return error;

        error = bus_dmamem_map(sc->sc_dmatag, p->segs, p->nsegs, p->size,
                               &p->addr, BUS_DMA_WAITOK|BUS_DMA_COHERENT);
        if (error)
                goto free;

        error = bus_dmamap_create(sc->sc_dmatag, p->size, 1, p->size,
                                  0, BUS_DMA_WAITOK, &p->map);
        if (error)
                goto unmap;

        error = bus_dmamap_load(sc->sc_dmatag, p->map, p->addr, p->size, NULL,
                                BUS_DMA_WAITOK);
        if (error)
                goto destroy;
        return (0);

destroy:
        bus_dmamap_destroy(sc->sc_dmatag, p->map);
unmap:
        bus_dmamem_unmap(sc->sc_dmatag, p->addr, p->size);
free:
        bus_dmamem_free(sc->sc_dmatag, p->segs, p->nsegs);
        return error;
}

static int
eap_freemem(struct eap_softc *sc, struct eap_dma *p)
{

        bus_dmamap_unload(sc->sc_dmatag, p->map);
        bus_dmamap_destroy(sc->sc_dmatag, p->map);
        bus_dmamem_unmap(sc->sc_dmatag, p->addr, p->size);
        bus_dmamem_free(sc->sc_dmatag, p->segs, p->nsegs);
        return 0;
}

static int
eap_open(void *addr, int flags)
{
        struct eap_instance *ei;

        ei = addr;
        /* there is only one ADC */
        if (ei->index == EAP_I2 && flags & FREAD)
                return EOPNOTSUPP;

        return 0;
}

static int
eap_query_format(void *addr, struct audio_format_query *afp)
{

        return audio_query_format(eap_formats, EAP_NFORMATS, afp);
}

static int
eap_set_format(void *addr, int setmode,
               const audio_params_t *play, const audio_params_t *rec,
               audio_filter_reg_t *pfil, audio_filter_reg_t *rfil)
{
        struct eap_instance *ei;
        struct eap_softc *sc;
        uint32_t div;

        ei = addr;
        sc = device_private(ei->parent);

        if (sc->sc_1371) {
                eap1371_set_dac_rate(ei, play->sample_rate);
                eap1371_set_adc_rate(sc, rec->sample_rate);
        } else if (ei->index == EAP_DAC2) {
                /* Set the speed */
                DPRINTFN(2, ("%s: old ICSC = 0x%08x\n", __func__,
                             EREAD4(sc, EAP_ICSC)));
                div = EREAD4(sc, EAP_ICSC) & ~EAP_PCLKBITS;
                /*
                 * *play and *rec are the identical on es1370 because
                 * !AUDIO_PROP_INDEPENDENT.
                 */

                /*
                 * XXX
                 * The -2 isn't documented, but seemed to make the wall
                 * time match
                 * what I expect.  - mycroft
                 */
                div |= EAP_SET_PCLKDIV(EAP_XTAL_FREQ / play->sample_rate - 2);
#if 0
                div |= EAP_CCB_INTRM;
#else
                /*
                 * It is not obvious how to acknowledge MCCB interrupts, so
                 * we had better not enable them.
                 */
#endif
                EWRITE4(sc, EAP_ICSC, div);
                DPRINTFN(2, ("%s: set ICSC = 0x%08x\n", __func__, div));
        } else {
                /*
                 * The FM DAC has only a few fixed-frequency choises, so
                 * pick out the best candidate.
                 */
                div = EREAD4(sc, EAP_ICSC);
                DPRINTFN(2, ("%s: old ICSC = 0x%08x\n", __func__, div));

                div &= ~EAP_WTSRSEL;
                if (play->sample_rate == 5512)
                        div |= EAP_WTSRSEL_5;
                else if (play->sample_rate == 11025)
                        div |= EAP_WTSRSEL_11;
                else if (play->sample_rate == 22050)
                        div |= EAP_WTSRSEL_22;
                else
                        div |= EAP_WTSRSEL_44;

                EWRITE4(sc, EAP_ICSC, div);
                DPRINTFN(2, ("%s: set ICSC = 0x%08x\n", __func__, div));
        }

        return 0;
}

static int
eap_trigger_output(
        void *addr,
        void *start,
        void *end,
        int blksize,
        void (*intr)(void *),
        void *arg,
        const audio_params_t *param)
{
        struct eap_instance *ei;
        struct eap_softc *sc;
        struct eap_dma *p;
        uint32_t icsc, sic;
        int sampshift;

        ei = addr;
        sc = device_private(ei->parent);
#ifdef DIAGNOSTIC
        if (ei->ei_prun)
                panic("eap_trigger_output: already running");
        ei->ei_prun = 1;
#endif

        DPRINTFN(1, ("eap_trigger_output: sc=%p start=%p end=%p "
            "blksize=%d intr=%p(%p)\n", addr, start, end, blksize, intr, arg));
        ei->ei_pintr = intr;
        ei->ei_parg = arg;

        sic = EREAD4(sc, EAP_SIC);
        sic &= ~(EAP_S_EB(ei->index) | EAP_S_MB(ei->index) | EAP_INC_BITS);

        if (ei->index == EAP_DAC2)
                sic |= EAP_SET_P2_ST_INC(0)
                    | EAP_SET_P2_END_INC(param->precision / 8);

        sampshift = 0;
        if (param->precision == 16) {
                sic |= EAP_S_EB(ei->index);
                sampshift++;
        }
        if (param->channels == 2) {
                sic |= EAP_S_MB(ei->index);
                sampshift++;
        }
        EWRITE4(sc, EAP_SIC, sic & ~EAP_P_INTR_EN(ei->index));
        EWRITE4(sc, EAP_SIC, sic | EAP_P_INTR_EN(ei->index));

        for (p = sc->sc_dmas; p && KERNADDR(p) != start; p = p->next)
                continue;
        if (!p) {
                printf("eap_trigger_output: bad addr %p\n", start);
                return EINVAL;
        }

        if (ei->index == EAP_DAC2) {
                DPRINTF(("eap_trigger_output: DAC2_ADDR=0x%x, DAC2_SIZE=0x%x\n",
                         (int)DMAADDR(p),
                         (int)EAP_SET_SIZE(0,
                         (((char *)end - (char *)start) >> 2) - 1)));
                EWRITE4(sc, EAP_MEMPAGE, EAP_DAC_PAGE);
                EWRITE4(sc, EAP_DAC2_ADDR, DMAADDR(p));
                EWRITE4(sc, EAP_DAC2_SIZE,
                        EAP_SET_SIZE(0,
                        ((char *)end - (char *)start) >> 2) - 1);
                EWRITE4(sc, EAP_DAC2_CSR, (blksize >> sampshift) - 1);
        } else if (ei->index == EAP_DAC1) {
                DPRINTF(("eap_trigger_output: DAC1_ADDR=0x%x, DAC1_SIZE=0x%x\n",
                         (int)DMAADDR(p),
                         (int)EAP_SET_SIZE(0,
                         (((char *)end - (char *)start) >> 2) - 1)));
                EWRITE4(sc, EAP_MEMPAGE, EAP_DAC_PAGE);
                EWRITE4(sc, EAP_DAC1_ADDR, DMAADDR(p));
                EWRITE4(sc, EAP_DAC1_SIZE,
                        EAP_SET_SIZE(0,
                        ((char *)end - (char *)start) >> 2) - 1);
                EWRITE4(sc, EAP_DAC1_CSR, (blksize >> sampshift) - 1);
        }
#ifdef DIAGNOSTIC
        else
                panic("eap_trigger_output: impossible instance %d", ei->index);
#endif

        if (sc->sc_1371)
                EWRITE4(sc, E1371_SRC, 0);

        icsc = EREAD4(sc, EAP_ICSC);
        icsc |= EAP_DAC_EN(ei->index);
        EWRITE4(sc, EAP_ICSC, icsc);

        DPRINTFN(1, ("eap_trigger_output: set ICSC = 0x%08x\n", icsc));

        return 0;
}

static int
eap_trigger_input(
        void *addr,
        void *start,
        void *end,
        int blksize,
        void (*intr)(void *),
        void *arg,
        const audio_params_t *param)
{
        struct eap_instance *ei;
        struct eap_softc *sc;
        struct eap_dma *p;
        uint32_t icsc, sic;
        int sampshift;

        ei = addr;
        sc = device_private(ei->parent);
#ifdef DIAGNOSTIC
        if (sc->sc_rrun)
                panic("eap_trigger_input: already running");
        sc->sc_rrun = 1;
#endif

        DPRINTFN(1, ("eap_trigger_input: ei=%p start=%p end=%p blksize=%d intr=%p(%p)\n",
            addr, start, end, blksize, intr, arg));
        sc->sc_rintr = intr;
        sc->sc_rarg = arg;

        sic = EREAD4(sc, EAP_SIC);
        sic &= ~(EAP_R1_S_EB | EAP_R1_S_MB);
        sampshift = 0;
        if (param->precision == 16) {
                sic |= EAP_R1_S_EB;
                sampshift++;
        }
        if (param->channels == 2) {
                sic |= EAP_R1_S_MB;
                sampshift++;
        }
        EWRITE4(sc, EAP_SIC, sic & ~EAP_R1_INTR_EN);
        EWRITE4(sc, EAP_SIC, sic | EAP_R1_INTR_EN);

        for (p = sc->sc_dmas; p && KERNADDR(p) != start; p = p->next)
                continue;
        if (!p) {
                printf("eap_trigger_input: bad addr %p\n", start);
                return (EINVAL);
        }

        DPRINTF(("eap_trigger_input: ADC_ADDR=0x%x, ADC_SIZE=0x%x\n",
                 (int)DMAADDR(p),
                 (int)EAP_SET_SIZE(0, (((char *)end - (char *)start) >> 2) - 1)));
        EWRITE4(sc, EAP_MEMPAGE, EAP_ADC_PAGE);
        EWRITE4(sc, EAP_ADC_ADDR, DMAADDR(p));
        EWRITE4(sc, EAP_ADC_SIZE,
                EAP_SET_SIZE(0, (((char *)end - (char *)start) >> 2) - 1));

        EWRITE4(sc, EAP_ADC_CSR, (blksize >> sampshift) - 1);

        if (sc->sc_1371)
                EWRITE4(sc, E1371_SRC, 0);

        icsc = EREAD4(sc, EAP_ICSC);
        icsc |= EAP_ADC_EN;
        EWRITE4(sc, EAP_ICSC, icsc);

        DPRINTFN(1, ("eap_trigger_input: set ICSC = 0x%08x\n", icsc));

        return 0;
}

static int
eap_halt_output(void *addr)
{
        struct eap_instance *ei;
        struct eap_softc *sc;
        uint32_t icsc;

        DPRINTF(("eap: eap_halt_output\n"));
        ei = addr;
        sc = device_private(ei->parent);
        icsc = EREAD4(sc, EAP_ICSC);
        EWRITE4(sc, EAP_ICSC, icsc & ~(EAP_DAC_EN(ei->index)));
        ei->ei_pintr = 0;
#ifdef DIAGNOSTIC
        ei->ei_prun = 0;
#endif

        return 0;
}

static int
eap_halt_input(void *addr)
{
        struct eap_instance *ei;
        struct eap_softc *sc;
        uint32_t icsc;

#define EAP_USE_FMDAC_ALSO
        DPRINTF(("eap: eap_halt_input\n"));
        ei = addr;
        sc = device_private(ei->parent);
        icsc = EREAD4(sc, EAP_ICSC);
        EWRITE4(sc, EAP_ICSC, icsc & ~EAP_ADC_EN);
        sc->sc_rintr = 0;
#ifdef DIAGNOSTIC
        sc->sc_rrun = 0;
#endif

        return 0;
}

static int
eap_getdev(void *addr, struct audio_device *retp)
{

        *retp = eap_device;
        return 0;
}

static int
eap1371_mixer_set_port(void *addr, mixer_ctrl_t *cp)
{
        struct eap_instance *ei;
        struct eap_softc *sc;

        ei = addr;
        sc = device_private(ei->parent);
        return sc->codec_if->vtbl->mixer_set_port(sc->codec_if, cp);
}

static int
eap1371_mixer_get_port(void *addr, mixer_ctrl_t *cp)
{
        struct eap_instance *ei;
        struct eap_softc *sc;

        ei = addr;
        sc = device_private(ei->parent);
        return sc->codec_if->vtbl->mixer_get_port(sc->codec_if, cp);
}

static int
eap1371_query_devinfo(void *addr, mixer_devinfo_t *dip)
{
        struct eap_instance *ei;
        struct eap_softc *sc;

        ei = addr;
        sc = device_private(ei->parent);
        return sc->codec_if->vtbl->query_devinfo(sc->codec_if, dip);
}

static void
eap1370_set_mixer(struct eap_softc *sc, int a, int d)
{
        eap1370_write_codec(sc, a, d);

        sc->sc_port[a] = d;
        DPRINTFN(1, ("eap1370_mixer_set_port port 0x%02x = 0x%02x\n", a, d));
}

static int
eap1370_mixer_set_port(void *addr, mixer_ctrl_t *cp)
{
        struct eap_instance *ei;
        struct eap_softc *sc;
        int lval, rval, l, r, la, ra;
        int l1, r1, l2, r2, m, o1, o2;

        ei = addr;
        sc = device_private(ei->parent);
        if (cp->dev == EAP_RECORD_SOURCE) {
                if (cp->type != AUDIO_MIXER_SET)
                        return EINVAL;
                m = sc->sc_record_source = cp->un.mask;
                l1 = l2 = r1 = r2 = 0;
                if (m & (1 << EAP_VOICE_VOL))
                        l2 |= AK_M_VOICE, r2 |= AK_M_VOICE;
                if (m & (1 << EAP_FM_VOL))
                        l1 |= AK_M_FM_L, r1 |= AK_M_FM_R;
                if (m & (1 << EAP_CD_VOL))
                        l1 |= AK_M_CD_L, r1 |= AK_M_CD_R;
                if (m & (1 << EAP_LINE_VOL))
                        l1 |= AK_M_LINE_L, r1 |= AK_M_LINE_R;
                if (m & (1 << EAP_AUX_VOL))
                        l2 |= AK_M2_AUX_L, r2 |= AK_M2_AUX_R;
                if (m & (1 << EAP_MIC_VOL))
                        l2 |= AK_M_TMIC, r2 |= AK_M_TMIC;
                eap1370_set_mixer(sc, AK_IN_MIXER1_L, l1);
                eap1370_set_mixer(sc, AK_IN_MIXER1_R, r1);
                eap1370_set_mixer(sc, AK_IN_MIXER2_L, l2);
                eap1370_set_mixer(sc, AK_IN_MIXER2_R, r2);
                return 0;
        }
        if (cp->dev == EAP_INPUT_SOURCE) {
                if (cp->type != AUDIO_MIXER_SET)
                        return EINVAL;
                m = sc->sc_input_source = cp->un.mask;
                o1 = o2 = 0;
                if (m & (1 << EAP_VOICE_VOL))
                        o2 |= AK_M_VOICE_L | AK_M_VOICE_R;
                if (m & (1 << EAP_FM_VOL))
                        o1 |= AK_M_FM_L | AK_M_FM_R;
                if (m & (1 << EAP_CD_VOL))
                        o1 |= AK_M_CD_L | AK_M_CD_R;
                if (m & (1 << EAP_LINE_VOL))
                        o1 |= AK_M_LINE_L | AK_M_LINE_R;
                if (m & (1 << EAP_AUX_VOL))
                        o2 |= AK_M_AUX_L | AK_M_AUX_R;
                if (m & (1 << EAP_MIC_VOL))
                        o1 |= AK_M_MIC;
                eap1370_set_mixer(sc, AK_OUT_MIXER1, o1);
                eap1370_set_mixer(sc, AK_OUT_MIXER2, o2);
                return 0;
        }
        if (cp->dev == EAP_MIC_PREAMP) {
                if (cp->type != AUDIO_MIXER_ENUM)
                        return EINVAL;
                if (cp->un.ord != 0 && cp->un.ord != 1)
                        return EINVAL;
                sc->sc_mic_preamp = cp->un.ord;
                eap1370_set_mixer(sc, AK_MGAIN, cp->un.ord);
                return 0;
        }
        if (cp->type != AUDIO_MIXER_VALUE)
                return EINVAL;
        if (cp->un.value.num_channels == 1)
                lval = rval = cp->un.value.level[AUDIO_MIXER_LEVEL_MONO];
        else if (cp->un.value.num_channels == 2) {
                lval = cp->un.value.level[AUDIO_MIXER_LEVEL_LEFT];
                rval = cp->un.value.level[AUDIO_MIXER_LEVEL_RIGHT];
        } else
                return EINVAL;
        ra = -1;
        switch (cp->dev) {
        case EAP_MASTER_VOL:
                l = VOL_TO_ATT5(lval);
                r = VOL_TO_ATT5(rval);
                la = AK_MASTER_L;
                ra = AK_MASTER_R;
                break;
        case EAP_MIC_VOL:
                if (cp->un.value.num_channels != 1)
                        return EINVAL;
                la = AK_MIC;
                goto lr;
        case EAP_VOICE_VOL:
                la = AK_VOICE_L;
                ra = AK_VOICE_R;
                goto lr;
        case EAP_FM_VOL:
                la = AK_FM_L;
                ra = AK_FM_R;
                goto lr;
        case EAP_CD_VOL:
                la = AK_CD_L;
                ra = AK_CD_R;
                goto lr;
        case EAP_LINE_VOL:
                la = AK_LINE_L;
                ra = AK_LINE_R;
                goto lr;
        case EAP_AUX_VOL:
                la = AK_AUX_L;
                ra = AK_AUX_R;
        lr:
                l = VOL_TO_GAIN5(lval);
                r = VOL_TO_GAIN5(rval);
                break;
        default:
                return EINVAL;
        }
        eap1370_set_mixer(sc, la, l);
        if (ra >= 0) {
                eap1370_set_mixer(sc, ra, r);
        }
        return 0;
}

static int
eap1370_mixer_get_port(void *addr, mixer_ctrl_t *cp)
{
        struct eap_instance *ei;
        struct eap_softc *sc;
        int la, ra, l, r;

        ei = addr;
        sc = device_private(ei->parent);
        switch (cp->dev) {
        case EAP_RECORD_SOURCE:
                if (cp->type != AUDIO_MIXER_SET)
                        return EINVAL;
                cp->un.mask = sc->sc_record_source;
                return 0;
        case EAP_INPUT_SOURCE:
                if (cp->type != AUDIO_MIXER_SET)
                        return EINVAL;
                cp->un.mask = sc->sc_input_source;
                return 0;
        case EAP_MIC_PREAMP:
                if (cp->type != AUDIO_MIXER_ENUM)
                        return EINVAL;
                cp->un.ord = sc->sc_mic_preamp;
                return 0;
        case EAP_MASTER_VOL:
                l = ATT5_TO_VOL(sc->sc_port[AK_MASTER_L]);
                r = ATT5_TO_VOL(sc->sc_port[AK_MASTER_R]);
                break;
        case EAP_MIC_VOL:
                if (cp->un.value.num_channels != 1)
                        return EINVAL;
                la = ra = AK_MIC;
                goto lr;
        case EAP_VOICE_VOL:
                la = AK_VOICE_L;
                ra = AK_VOICE_R;
                goto lr;
        case EAP_FM_VOL:
                la = AK_FM_L;
                ra = AK_FM_R;
                goto lr;
        case EAP_CD_VOL:
                la = AK_CD_L;
                ra = AK_CD_R;
                goto lr;
        case EAP_LINE_VOL:
                la = AK_LINE_L;
                ra = AK_LINE_R;
                goto lr;
        case EAP_AUX_VOL:
                la = AK_AUX_L;
                ra = AK_AUX_R;
        lr:
                l = GAIN5_TO_VOL(sc->sc_port[la]);
                r = GAIN5_TO_VOL(sc->sc_port[ra]);
                break;
        default:
                return EINVAL;
        }
        if (cp->un.value.num_channels == 1)
                cp->un.value.level[AUDIO_MIXER_LEVEL_MONO] = (l+r) / 2;
        else if (cp->un.value.num_channels == 2) {
                cp->un.value.level[AUDIO_MIXER_LEVEL_LEFT]  = l;
                cp->un.value.level[AUDIO_MIXER_LEVEL_RIGHT] = r;
        } else
                return EINVAL;
        return 0;
}

static int
eap1370_query_devinfo(void *addr, mixer_devinfo_t *dip)
{

        switch (dip->index) {
        case EAP_MASTER_VOL:
                dip->type = AUDIO_MIXER_VALUE;
                dip->mixer_class = EAP_OUTPUT_CLASS;
                dip->prev = dip->next = AUDIO_MIXER_LAST;
                strcpy(dip->label.name, AudioNmaster);
                dip->un.v.num_channels = 2;
                dip->un.v.delta = 8;
                strcpy(dip->un.v.units.name, AudioNvolume);
                return 0;
        case EAP_VOICE_VOL:
                dip->type = AUDIO_MIXER_VALUE;
                dip->mixer_class = EAP_INPUT_CLASS;
                dip->prev = AUDIO_MIXER_LAST;
                dip->next = AUDIO_MIXER_LAST;
                strcpy(dip->label.name, AudioNdac);
                dip->un.v.num_channels = 2;
                dip->un.v.delta = 8;
                strcpy(dip->un.v.units.name, AudioNvolume);
                return 0;
        case EAP_FM_VOL:
                dip->type = AUDIO_MIXER_VALUE;
                dip->mixer_class = EAP_INPUT_CLASS;
                dip->prev = AUDIO_MIXER_LAST;
                dip->next = AUDIO_MIXER_LAST;
                strcpy(dip->label.name, AudioNfmsynth);
                dip->un.v.num_channels = 2;
                dip->un.v.delta = 8;
                strcpy(dip->un.v.units.name, AudioNvolume);
                return 0;
        case EAP_CD_VOL:
                dip->type = AUDIO_MIXER_VALUE;
                dip->mixer_class = EAP_INPUT_CLASS;
                dip->prev = AUDIO_MIXER_LAST;
                dip->next = AUDIO_MIXER_LAST;
                strcpy(dip->label.name, AudioNcd);
                dip->un.v.num_channels = 2;
                dip->un.v.delta = 8;
                strcpy(dip->un.v.units.name, AudioNvolume);
                return 0;
        case EAP_LINE_VOL:
                dip->type = AUDIO_MIXER_VALUE;
                dip->mixer_class = EAP_INPUT_CLASS;
                dip->prev = AUDIO_MIXER_LAST;
                dip->next = AUDIO_MIXER_LAST;
                strcpy(dip->label.name, AudioNline);
                dip->un.v.num_channels = 2;
                dip->un.v.delta = 8;
                strcpy(dip->un.v.units.name, AudioNvolume);
                return 0;
        case EAP_AUX_VOL:
                dip->type = AUDIO_MIXER_VALUE;
                dip->mixer_class = EAP_INPUT_CLASS;
                dip->prev = AUDIO_MIXER_LAST;
                dip->next = AUDIO_MIXER_LAST;
                strcpy(dip->label.name, AudioNaux);
                dip->un.v.num_channels = 2;
                dip->un.v.delta = 8;
                strcpy(dip->un.v.units.name, AudioNvolume);
                return 0;
        case EAP_MIC_VOL:
                dip->type = AUDIO_MIXER_VALUE;
                dip->mixer_class = EAP_INPUT_CLASS;
                dip->prev = AUDIO_MIXER_LAST;
                dip->next = EAP_MIC_PREAMP;
                strcpy(dip->label.name, AudioNmicrophone);
                dip->un.v.num_channels = 1;
                dip->un.v.delta = 8;
                strcpy(dip->un.v.units.name, AudioNvolume);
                return 0;
        case EAP_RECORD_SOURCE:
                dip->mixer_class = EAP_RECORD_CLASS;
                dip->prev = dip->next = AUDIO_MIXER_LAST;
                strcpy(dip->label.name, AudioNsource);
                dip->type = AUDIO_MIXER_SET;
                dip->un.s.num_mem = 6;
                strcpy(dip->un.s.member[0].label.name, AudioNmicrophone);
                dip->un.s.member[0].mask = 1 << EAP_MIC_VOL;
                strcpy(dip->un.s.member[1].label.name, AudioNcd);
                dip->un.s.member[1].mask = 1 << EAP_CD_VOL;
                strcpy(dip->un.s.member[2].label.name, AudioNline);
                dip->un.s.member[2].mask = 1 << EAP_LINE_VOL;
                strcpy(dip->un.s.member[3].label.name, AudioNfmsynth);
                dip->un.s.member[3].mask = 1 << EAP_FM_VOL;
                strcpy(dip->un.s.member[4].label.name, AudioNaux);
                dip->un.s.member[4].mask = 1 << EAP_AUX_VOL;
                strcpy(dip->un.s.member[5].label.name, AudioNdac);
                dip->un.s.member[5].mask = 1 << EAP_VOICE_VOL;
                return 0;
        case EAP_INPUT_SOURCE:
                dip->mixer_class = EAP_INPUT_CLASS;
                dip->prev = dip->next = AUDIO_MIXER_LAST;
                strcpy(dip->label.name, AudioNsource);
                dip->type = AUDIO_MIXER_SET;
                dip->un.s.num_mem = 6;
                strcpy(dip->un.s.member[0].label.name, AudioNmicrophone);
                dip->un.s.member[0].mask = 1 << EAP_MIC_VOL;
                strcpy(dip->un.s.member[1].label.name, AudioNcd);
                dip->un.s.member[1].mask = 1 << EAP_CD_VOL;
                strcpy(dip->un.s.member[2].label.name, AudioNline);
                dip->un.s.member[2].mask = 1 << EAP_LINE_VOL;
                strcpy(dip->un.s.member[3].label.name, AudioNfmsynth);
                dip->un.s.member[3].mask = 1 << EAP_FM_VOL;
                strcpy(dip->un.s.member[4].label.name, AudioNaux);
                dip->un.s.member[4].mask = 1 << EAP_AUX_VOL;
                strcpy(dip->un.s.member[5].label.name, AudioNdac);
                dip->un.s.member[5].mask = 1 << EAP_VOICE_VOL;
                return 0;
        case EAP_MIC_PREAMP:
                dip->type = AUDIO_MIXER_ENUM;
                dip->mixer_class = EAP_INPUT_CLASS;
                dip->prev = EAP_MIC_VOL;
                dip->next = AUDIO_MIXER_LAST;
                strcpy(dip->label.name, AudioNpreamp);
                dip->un.e.num_mem = 2;
                strcpy(dip->un.e.member[0].label.name, AudioNoff);
                dip->un.e.member[0].ord = 0;
                strcpy(dip->un.e.member[1].label.name, AudioNon);
                dip->un.e.member[1].ord = 1;
                return 0;
        case EAP_OUTPUT_CLASS:
                dip->type = AUDIO_MIXER_CLASS;
                dip->mixer_class = EAP_OUTPUT_CLASS;
                dip->next = dip->prev = AUDIO_MIXER_LAST;
                strcpy(dip->label.name, AudioCoutputs);
                return 0;
        case EAP_RECORD_CLASS:
                dip->type = AUDIO_MIXER_CLASS;
                dip->mixer_class = EAP_RECORD_CLASS;
                dip->next = dip->prev = AUDIO_MIXER_LAST;
                strcpy(dip->label.name, AudioCrecord);
                return 0;
        case EAP_INPUT_CLASS:
                dip->type = AUDIO_MIXER_CLASS;
                dip->mixer_class = EAP_INPUT_CLASS;
                dip->next = dip->prev = AUDIO_MIXER_LAST;
                strcpy(dip->label.name, AudioCinputs);
                return 0;
        }
        return ENXIO;
}

static void *
eap_malloc(void *addr, int direction, size_t size)
{
        struct eap_instance *ei;
        struct eap_softc *sc;
        struct eap_dma *p;
        int error;

        p = kmem_alloc(sizeof(*p), KM_SLEEP);
        ei = addr;
        sc = device_private(ei->parent);
        error = eap_allocmem(sc, size, 16, p);
        if (error) {
                kmem_free(p, sizeof(*p));
                return NULL;
        }
        p->next = sc->sc_dmas;
        sc->sc_dmas = p;
        return KERNADDR(p);
}

static void
eap_free(void *addr, void *ptr, size_t size)
{
        struct eap_instance *ei;
        struct eap_softc *sc;
        struct eap_dma **pp, *p;

        ei = addr;
        sc = device_private(ei->parent);
        for (pp = &sc->sc_dmas; (p = *pp) != NULL; pp = &p->next) {
                if (KERNADDR(p) == ptr) {
                        eap_freemem(sc, p);
                        *pp = p->next;
                        kmem_free(p, sizeof(*p));
                        return;
                }
        }
}

static int
eap_get_props(void *addr)
{
        struct eap_instance *ei;
        struct eap_softc *sc;
        int prop;

        ei = addr;
        sc = device_private(ei->parent);
        prop = AUDIO_PROP_PLAYBACK | AUDIO_PROP_CAPTURE |
            AUDIO_PROP_INDEPENDENT | AUDIO_PROP_FULLDUPLEX;
        /* The es1370 only has one clock, so it's not independent */
        if (!sc->sc_1371 && ei->index == EAP_DAC2)
                prop &= ~AUDIO_PROP_INDEPENDENT;

        return prop;
}

static void
eap_get_locks(void *addr, kmutex_t **intr, kmutex_t **thread)
{
        struct eap_instance *ei;
        struct eap_softc *sc;

        ei = addr;
        sc = device_private(ei->parent);
        *intr = &sc->sc_intr_lock;
        *thread = &sc->sc_lock;
}

#if NMIDI > 0
static int
eap_midi_open(void *addr, int flags,
              void (*iintr)(void *, int),
              void (*ointr)(void *),
              void *arg)
{
        struct eap_softc *sc;
        uint8_t uctrl;

        sc = addr;
        sc->sc_arg = arg;

        EWRITE4(sc, EAP_ICSC, EREAD4(sc, EAP_ICSC) | EAP_UART_EN);
        uctrl = 0;
        if (flags & FREAD) {
                uctrl |= EAP_UC_RXINTEN;
                sc->sc_iintr = iintr;
        }
        if (flags & FWRITE)
                sc->sc_ointr = ointr;
        EWRITE1(sc, EAP_UART_CONTROL, uctrl);

        return 0;
}

static void
eap_midi_close(void *addr)
{
        struct eap_softc *sc;

        sc = addr;
        /* give uart a chance to drain */
        (void)kpause("eapclm", false, hz/10, &sc->sc_intr_lock);
        EWRITE1(sc, EAP_UART_CONTROL, 0);
        EWRITE4(sc, EAP_ICSC, EREAD4(sc, EAP_ICSC) & ~EAP_UART_EN);

        sc->sc_iintr = 0;
        sc->sc_ointr = 0;
}

static int
eap_midi_output(void *addr, int d)
{
        struct eap_softc *sc;
        uint8_t uctrl;

        sc = addr;
        EWRITE1(sc, EAP_UART_DATA, d);
        
        uctrl = EAP_UC_TXINTEN;
        if (sc->sc_iintr)
                uctrl |= EAP_UC_RXINTEN;
        /*
         * This is a write-only register, so we have to remember the right
         * value of RXINTEN as well as setting TXINTEN. But if we are open
         * for reading, it will always be correct to set RXINTEN here; only
         * during service of a receive interrupt could it be momentarily
         * toggled off, and whether we got here from the top half or from
         * an interrupt, that won't be the current state.
         */
        EWRITE1(sc, EAP_UART_CONTROL, uctrl);
        return 0;
}

static void
eap_midi_getinfo(void *addr, struct midi_info *mi)
{
        mi->name = "AudioPCI MIDI UART";
        mi->props = MIDI_PROP_CAN_INPUT | MIDI_PROP_OUT_INTR;
}

static void
eap_uart_txrdy(struct eap_softc *sc)
{
        uint8_t uctrl;
        uctrl = 0;
        if (sc->sc_iintr)
                uctrl = EAP_UC_RXINTEN;
        EWRITE1(sc, EAP_UART_CONTROL, uctrl);
        sc->sc_ointr(sc->sc_arg);
}

#endif