dd the envy24 driver as is to the tree. It's not connected to the build

yet. More commits to follow.

I got no response from the author, but since the driver is BSD licensed
I don't think he will complain. :-)

I got it from http://people.freebsd.org/~lofi/envy24.tar.gz

Written by:	Katsurajima Naoto <raven@katsurajima.seya.yokohama.jp>

1 files changed, 2445 insertions, 0 deletions

diff --git a/sys/dev/sound/pci/envy24ht.c b/sys/dev/sound/pci/envy24ht.c
new file mode 100644
index 0000000..c23efc3
--- /dev/null
+++ b/sys/dev/sound/pci/envy24ht.c
@@ -0,0 +1,2445 @@
+/*
+ * Copyright (c) 2001 Katsurajima Naoto <raven@katsurajima.seya.yokohama.jp>
+ * All rights reserved.
+ *
+ * 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 AUTHOR 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 AUTHOR 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, WHETHERIN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THEPOSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#include <dev/sound/pcm/sound.h>
+#include <dev/sound/pcm/ac97.h>
+#include <dev/sound/pci/ak452x.h>
+#include <dev/sound/pci/envy24.h>
+
+#include <pci/pcireg.h>
+#include <pci/pcivar.h>
+
+#include "mixer_if.h"
+
+MALLOC_DEFINE(M_ENVY24, "envy24", "envy24 audio");
+
+/* -------------------------------------------------------------------- */
+
+struct sc_info;
+
+#define ENVY24_PLAY_CHNUM 10
+#define ENVY24_REC_CHNUM 12
+#define ENVY24_PLAY_BUFUNIT (4 /* byte/sample */ * 10 /* channel */)
+#define ENVY24_REC_BUFUNIT  (4 /* byte/sample */ * 12 /* channel */)
+#define ENVY24_SAMPLE_NUM   4096
+
+#define ENVY24_TIMEOUT 1000
+
+#define ENVY24_DEFAULT_FORMAT (AFMT_STEREO | AFMT_S16_LE)
+
+#define ENVY24_NAMELEN 32
+
+typedef volatile u_int32_t sample32_t;
+
+/* channel registers */
+struct sc_chinfo {
+	struct snd_dbuf		*buffer;
+	struct pcm_channel	*channel;
+	struct sc_info		*parent;
+	int			dir;
+	unsigned		num; /* hw channel number */
+
+	/* channel information */
+	u_int32_t		format;
+	u_int32_t		speed;
+	u_int32_t		blk; /* hw block size(dword) */
+
+	/* format conversion structure */
+	u_int8_t		*data;
+	unsigned int		size; /* data buffer size(byte) */
+	int			unit; /* sample size(byte) */
+	unsigned int		offset; /* samples number offset */
+	void			(*emldma)(struct sc_chinfo *);
+
+	/* flags */
+	int			run;
+};
+
+/* codec interface entrys */
+struct codec_entry {
+	void *(*create)(device_t dev, void *devinfo, int dir, int num);
+	void (*destroy)(void *codec);
+	void (*init)(void *codec);
+	void (*reinit)(void *codec);
+	void (*setvolume)(void *codec, int dir, unsigned int left, unsigned int right);
+	void (*setrate)(void *codec, int which, int rate);
+};
+
+/* system configuration information */
+struct cfg_info {
+	char *name;
+	u_int16_t subvendor, subdevice;
+	u_int8_t scfg, acl, i2s, spdif;
+	u_int8_t gpiomask, gpiostate, gpiodir;
+	u_int8_t free;
+	struct codec_entry *codec;
+};
+
+/* device private data */
+struct sc_info {
+	device_t	dev;
+	void		*lock;
+
+	/* Control/Status registor */
+	struct resource *cs;
+	int		csid;
+	bus_space_tag_t cst;
+	bus_space_handle_t csh;
+	/* DDMA registor */
+	struct resource *ddma;
+	int		ddmaid;
+	bus_space_tag_t ddmat;
+	bus_space_handle_t ddmah;
+	/* Consumer Section DMA Channel Registers */
+	struct resource *ds;
+	int		dsid;
+	bus_space_tag_t dst;
+	bus_space_handle_t dsh;
+	/* MultiTrack registor */
+	struct resource *mt;
+	int		mtid;
+	bus_space_tag_t mtt;
+	bus_space_handle_t mth;
+	/* DMA tag */
+	bus_dma_tag_t dmat;
+	/* IRQ resource */
+	struct resource *irq;
+	int		irqid;
+	void		*ih;
+
+	/* system configuration data */
+	struct cfg_info *cfg;
+
+	/* ADC/DAC number and info */
+	int		adcn, dacn;
+	void		*adc[4], *dac[4];
+
+	/* mixer control data */
+	u_int32_t	src;
+	u_int8_t	left[ENVY24_CHAN_NUM];
+	u_int8_t	right[ENVY24_CHAN_NUM];
+
+	/* Play/Record DMA fifo */
+	sample32_t	*pbuf;
+	sample32_t	*rbuf;
+	u_int32_t	psize, rsize; /* DMA buffer size(byte) */
+	u_int16_t	blk[2]; /* transfer check blocksize(dword) */
+	bus_dmamap_t	pmap, rmap;
+
+	/* current status */
+	u_int32_t	speed;
+	int		run[2];
+	u_int16_t	intr[2];
+	struct pcmchan_caps	caps[2];
+
+	/* channel info table */
+	unsigned	chnum;
+	struct sc_chinfo chan[11];
+};
+
+/* -------------------------------------------------------------------- */
+
+/*
+ * prototypes
+ */
+
+/* DMA emulator */
+static void envy24_p8u(struct sc_chinfo *);
+static void envy24_p16sl(struct sc_chinfo *);
+static void envy24_p32sl(struct sc_chinfo *);
+static void envy24_r16sl(struct sc_chinfo *);
+static void envy24_r32sl(struct sc_chinfo *);
+
+/* channel interface */
+static void *envy24chan_init(kobj_t, void *, struct snd_dbuf *, struct pcm_channel *, int);
+static int envy24chan_setformat(kobj_t, void *, u_int32_t);
+static int envy24chan_setspeed(kobj_t, void *, u_int32_t);
+static int envy24chan_setblocksize(kobj_t, void *, u_int32_t);
+static int envy24chan_trigger(kobj_t, void *, int);
+static int envy24chan_getptr(kobj_t, void *);
+static struct pcmchan_caps *envy24chan_getcaps(kobj_t, void *);
+
+/* mixer interface */
+static int envy24mixer_init(struct snd_mixer *);
+static int envy24mixer_reinit(struct snd_mixer *);
+static int envy24mixer_uninit(struct snd_mixer *);
+static int envy24mixer_set(struct snd_mixer *, unsigned, unsigned, unsigned);
+static u_int32_t envy24mixer_setrecsrc(struct snd_mixer *, u_int32_t);
+
+/* M-Audio Delta series AK4524 access interface */
+static void *envy24_delta_ak4524_create(device_t, void *, int, int);
+static void envy24_delta_ak4524_destroy(void *);
+static void envy24_delta_ak4524_init(void *);
+static void envy24_delta_ak4524_reinit(void *);
+static void envy24_delta_ak4524_setvolume(void *, int, unsigned int, unsigned int);
+
+/* -------------------------------------------------------------------- */
+
+/*
+  system constant tables
+*/
+
+/* API -> hardware channel map */
+static unsigned envy24_chanmap[ENVY24_CHAN_NUM] = {
+	ENVY24_CHAN_PLAY_SPDIF, /* 0 */
+	ENVY24_CHAN_PLAY_DAC1,  /* 1 */
+	ENVY24_CHAN_PLAY_DAC2,  /* 2 */
+	ENVY24_CHAN_PLAY_DAC3,  /* 3 */
+	ENVY24_CHAN_PLAY_DAC4,  /* 4 */
+	ENVY24_CHAN_REC_MIX,    /* 5 */
+	ENVY24_CHAN_REC_SPDIF,  /* 6 */
+	ENVY24_CHAN_REC_ADC1,   /* 7 */
+	ENVY24_CHAN_REC_ADC2,   /* 8 */
+	ENVY24_CHAN_REC_ADC3,   /* 9 */
+	ENVY24_CHAN_REC_ADC4,   /* 10 */
+};
+
+/* mixer -> API channel map. see above */
+static int envy24_mixmap[] = {
+	-1, /* Master output level. It is depend on codec support */
+	-1, /* Treble level of all output channels */
+	-1, /* Bass level of all output channels */
+	-1, /* Volume of synthesier input */
+	0,  /* Output level for the audio device */
+	-1, /* Output level for the PC speaker */
+	7,  /* line in jack */
+	-1, /* microphone jack */
+	-1, /* CD audio input */
+	-1, /* Recording monitor */
+	1,  /* alternative codec */
+	-1, /* global recording level */
+	-1, /* Input gain */
+	-1, /* Output gain */
+	8,  /* Input source 1 */
+	9,  /* Input source 2 */
+	10, /* Input source 3 */
+	6,  /* Digital (input) 1 */
+	-1, /* Digital (input) 2 */
+	-1, /* Digital (input) 3 */
+	-1, /* Phone input */
+	-1, /* Phone output */
+	-1, /* Video/TV (audio) in */
+	-1, /* Radio in */
+	-1, /* Monitor volume */
+};
+
+/* variable rate audio */
+static u_int32_t envy24_speed[] = {
+    96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, 16000,
+    12000, 11025, 9600, 8000, 0
+};
+
+/* known boards configuration */
+static struct codec_entry delta_codec = {
+	envy24_delta_ak4524_create,
+	envy24_delta_ak4524_destroy,
+	envy24_delta_ak4524_init,
+	envy24_delta_ak4524_reinit,
+	envy24_delta_ak4524_setvolume,
+	NULL, /* setrate */
+};
+
+static struct cfg_info cfg_table[] = {
+	{
+		"Envy24 audio(M Audio Delta Dio 2496)",
+		0x1412, 0xd631,
+		0x10, 0x80, 0xf0, 0x03,
+		0xff, 0x00, 0x00,
+		0,
+		&delta_codec,
+	},
+	{
+		"Envy24 audio(Generic)",
+		0, 0,
+		0x0f, 0x00, 0x01, 0x03,
+		0xff, 0x00, 0x00,
+		0,
+		&delta_codec, /* default codec routines */
+	}
+};
+
+static u_int32_t envy24_recfmt[] = {
+	AFMT_STEREO | AFMT_S16_LE,
+	AFMT_STEREO | AFMT_S32_LE,
+	0
+};
+static struct pcmchan_caps envy24_reccaps = {8000, 96000, envy24_recfmt, 0};
+
+static u_int32_t envy24_playfmt[] = {
+	AFMT_STEREO | AFMT_U8,
+	AFMT_STEREO | AFMT_S16_LE,
+	AFMT_STEREO | AFMT_S32_LE,
+	0
+};
+
+static struct pcmchan_caps envy24_playcaps = {8000, 96000, envy24_playfmt, 0};
+
+struct envy24_emldma {
+	u_int32_t	format;
+	void		(*emldma)(struct sc_chinfo *);
+	int		unit;
+};
+
+static struct envy24_emldma envy24_pemltab[] = {
+	{AFMT_STEREO | AFMT_U8, envy24_p8u, 2},
+	{AFMT_STEREO | AFMT_S16_LE, envy24_p16sl, 4},
+	{AFMT_STEREO | AFMT_S32_LE, envy24_p32sl, 8},
+	{0, NULL, 0}
+};
+
+static struct envy24_emldma envy24_remltab[] = {
+	{AFMT_STEREO | AFMT_S16_LE, envy24_r16sl, 4},
+	{AFMT_STEREO | AFMT_S32_LE, envy24_r32sl, 8},
+	{0, NULL, 0}
+};
+
+/* -------------------------------------------------------------------- */
+
+/* common routines */
+static u_int32_t
+envy24_rdcs(struct sc_info *sc, int regno, int size)
+{
+	switch (size) {
+	case 1:
+		return bus_space_read_1(sc->cst, sc->csh, regno);
+	case 2:
+		return bus_space_read_2(sc->cst, sc->csh, regno);
+	case 4:
+		return bus_space_read_4(sc->cst, sc->csh, regno);
+	default:
+		return 0xffffffff;
+	}
+}
+
+static void
+envy24_wrcs(struct sc_info *sc, int regno, u_int32_t data, int size)
+{
+	switch (size) {
+	case 1:
+		bus_space_write_1(sc->cst, sc->csh, regno, data);
+		break;
+	case 2:
+		bus_space_write_2(sc->cst, sc->csh, regno, data);
+		break;
+	case 4:
+		bus_space_write_4(sc->cst, sc->csh, regno, data);
+		break;
+	}
+}
+
+static u_int32_t
+envy24_rdmt(struct sc_info *sc, int regno, int size)
+{
+	switch (size) {
+	case 1:
+		return bus_space_read_1(sc->mtt, sc->mth, regno);
+	case 2:
+		return bus_space_read_2(sc->mtt, sc->mth, regno);
+	case 4:
+		return bus_space_read_4(sc->mtt, sc->mth, regno);
+	default:
+		return 0xffffffff;
+	}
+}
+
+static void
+envy24_wrmt(struct sc_info *sc, int regno, u_int32_t data, int size)
+{
+	switch (size) {
+	case 1:
+		bus_space_write_1(sc->mtt, sc->mth, regno, data);
+		break;
+	case 2:
+		bus_space_write_2(sc->mtt, sc->mth, regno, data);
+		break;
+	case 4:
+		bus_space_write_4(sc->mtt, sc->mth, regno, data);
+		break;
+	}
+}
+
+static u_int32_t
+envy24_rdci(struct sc_info *sc, int regno)
+{
+	envy24_wrcs(sc, ENVY24_CCS_INDEX, regno, 1);
+	return envy24_rdcs(sc, ENVY24_CCS_DATA, 1);
+}
+
+static void
+envy24_wrci(struct sc_info *sc, int regno, u_int32_t data)
+{
+	envy24_wrcs(sc, ENVY24_CCS_INDEX, regno, 1);
+	envy24_wrcs(sc, ENVY24_CCS_DATA, data, 1);
+}
+
+/* -------------------------------------------------------------------- */
+
+/* I2C port/E2PROM access routines */
+
+static int
+envy24_rdi2c(struct sc_info *sc, u_int32_t dev, u_int32_t addr)
+{
+	u_int32_t data;
+	int i;
+
+#if(0)
+	device_printf(sc->dev, "envy24_rdi2c(sc, 0x%02x, 0x%02x)\n", dev, addr);
+#endif
+	for (i = 0; i < ENVY24_TIMEOUT; i++) {
+		data = envy24_rdcs(sc, ENVY24_CCS_I2CSTAT, 1);
+		if ((data & ENVY24_CCS_I2CSTAT_BSY) == 0)
+			break;
+		DELAY(32); /* 31.25kHz */
+	}
+	if (i == ENVY24_TIMEOUT) {
+		return -1;
+	}
+	envy24_wrcs(sc, ENVY24_CCS_I2CADDR, addr, 1);
+	envy24_wrcs(sc, ENVY24_CCS_I2CDEV,
+	    (dev & ENVY24_CCS_I2CDEV_ADDR) | ENVY24_CCS_I2CDEV_RD, 1);
+	for (i = 0; i < ENVY24_TIMEOUT; i++) {
+		data = envy24_rdcs(sc, ENVY24_CCS_I2CSTAT, 1);
+		if ((data & ENVY24_CCS_I2CSTAT_BSY) == 0)
+			break;
+		DELAY(32); /* 31.25kHz */
+	}
+	if (i == ENVY24_TIMEOUT) {
+		return -1;
+	}
+	data = envy24_rdcs(sc, ENVY24_CCS_I2CDATA, 1);
+
+#if(0)
+	device_printf(sc->dev, "envy24_rdi2c(): return 0x%x\n", data);
+#endif
+	return (int)data;
+}
+
+static int
+envy24_wri2c(struct sc_info *sc, u_int32_t dev, u_int32_t addr, u_int32_t data)
+{
+	u_int32_t tmp;
+	int i;
+
+#if(0)
+	device_printf(sc->dev, "envy24_rdi2c(sc, 0x%02x, 0x%02x)\n", dev, addr);
+#endif
+	for (i = 0; i < ENVY24_TIMEOUT; i++) {
+		tmp = envy24_rdcs(sc, ENVY24_CCS_I2CSTAT, 1);
+		if ((tmp & ENVY24_CCS_I2CSTAT_BSY) == 0)
+			break;
+		DELAY(32); /* 31.25kHz */
+	}
+	if (i == ENVY24_TIMEOUT) {
+		return -1;
+	}
+	envy24_wrcs(sc, ENVY24_CCS_I2CADDR, addr, 1);
+	envy24_wrcs(sc, ENVY24_CCS_I2CDATA, data, 1);
+	envy24_wrcs(sc, ENVY24_CCS_I2CDEV,
+	    (dev & ENVY24_CCS_I2CDEV_ADDR) | ENVY24_CCS_I2CDEV_WR, 1);
+	for (i = 0; i < ENVY24_TIMEOUT; i++) {
+		data = envy24_rdcs(sc, ENVY24_CCS_I2CSTAT, 1);
+		if ((data & ENVY24_CCS_I2CSTAT_BSY) == 0)
+			break;
+		DELAY(32); /* 31.25kHz */
+	}
+	if (i == ENVY24_TIMEOUT) {
+		return -1;
+	}
+
+	return 0;
+}
+
+static int
+envy24_rdrom(struct sc_info *sc, u_int32_t addr)
+{
+	u_int32_t data;
+
+#if(0)
+	device_printf(sc->dev, "envy24_rdrom(sc, 0x%02x)\n", addr);
+#endif
+	data = envy24_rdcs(sc, ENVY24_CCS_I2CSTAT, 1);
+	if ((data & ENVY24_CCS_I2CSTAT_ROM) == 0) {
+#if(0)
+		device_printf(sc->dev, "envy24_rdrom(): E2PROM not presented\n");
+#endif
+		return -1;
+	}
+
+	return envy24_rdi2c(sc, ENVY24_CCS_I2CDEV_ROM, addr);
+}
+
+static struct cfg_info *
+envy24_rom2cfg(struct sc_info *sc)
+{
+	struct cfg_info *buff;
+	int size;
+	int i;
+
+#if(0)
+	device_printf(sc->dev, "envy24_rom2cfg(sc)\n");
+#endif
+	size = envy24_rdrom(sc, ENVY24_E2PROM_SIZE);
+	if (size < ENVY24_E2PROM_GPIODIR + 1) {
+#if(0)
+		device_printf(sc->dev, "envy24_rom2cfg(): ENVY24_E2PROM_SIZE-->%d\n", size);
+#endif
+		return NULL;
+	}
+	buff = malloc(sizeof(*buff), M_ENVY24, M_NOWAIT);
+	if (buff == NULL) {
+#if(0)
+		device_printf(sc->dev, "envy24_rom2cfg(): malloc()\n");
+#endif
+		return NULL;
+	}
+	buff->free = 1;
+
+	buff->subvendor = envy24_rdrom(sc, ENVY24_E2PROM_SUBVENDOR) << 8;
+	buff->subvendor += envy24_rdrom(sc, ENVY24_E2PROM_SUBVENDOR + 1);
+	buff->subdevice = envy24_rdrom(sc, ENVY24_E2PROM_SUBDEVICE) << 8;
+	buff->subdevice += envy24_rdrom(sc, ENVY24_E2PROM_SUBDEVICE + 1);
+	buff->scfg = envy24_rdrom(sc, ENVY24_E2PROM_SCFG);
+	buff->acl = envy24_rdrom(sc, ENVY24_E2PROM_ACL);
+	buff->i2s = envy24_rdrom(sc, ENVY24_E2PROM_I2S);
+	buff->spdif = envy24_rdrom(sc, ENVY24_E2PROM_SPDIF);
+	buff->gpiomask = envy24_rdrom(sc, ENVY24_E2PROM_GPIOMASK);
+	buff->gpiostate = envy24_rdrom(sc, ENVY24_E2PROM_GPIOSTATE);
+	buff->gpiodir = envy24_rdrom(sc, ENVY24_E2PROM_GPIODIR);
+
+	for (i = 0; cfg_table[i].subvendor != 0 || cfg_table[i].subdevice != 0; i++)
+		if (cfg_table[i].subvendor == buff->subvendor &&
+		    cfg_table[i].subdevice == buff->subdevice)
+			break;
+	buff->name = cfg_table[i].name;
+	buff->codec = cfg_table[i].codec;
+
+	return buff;
+}
+
+static void
+envy24_cfgfree(struct cfg_info *cfg) {
+	if (cfg == NULL)
+		return;
+	if (cfg->free)
+		free(cfg, M_ENVY24);
+	return;
+}
+
+/* -------------------------------------------------------------------- */
+
+/* AC'97 codec access routines */
+
+static int
+envy24_coldcd(struct sc_info *sc)
+{
+	u_int32_t data;
+	int i;
+
+#if(0)
+	device_printf(sc->dev, "envy24_coldcd()\n");
+#endif
+	envy24_wrmt(sc, ENVY24_MT_AC97CMD, ENVY24_MT_AC97CMD_CLD, 1);
+	DELAY(10);
+	envy24_wrmt(sc, ENVY24_MT_AC97CMD, 0, 1);
+	DELAY(1000);
+	for (i = 0; i < ENVY24_TIMEOUT; i++) {
+		data = envy24_rdmt(sc, ENVY24_MT_AC97CMD, 1);
+		if (data & ENVY24_MT_AC97CMD_RDY) {
+			return 0;
+		}
+	}
+
+	return -1;
+}
+
+static int
+envy24_slavecd(struct sc_info *sc)
+{
+	u_int32_t data;
+	int i;
+
+#if(0)
+	device_printf(sc->dev, "envy24_slavecd()\n");
+#endif
+	envy24_wrmt(sc, ENVY24_MT_AC97CMD,
+	    ENVY24_MT_AC97CMD_CLD | ENVY24_MT_AC97CMD_WRM, 1);
+	DELAY(10);
+	envy24_wrmt(sc, ENVY24_MT_AC97CMD, 0, 1);
+	DELAY(1000);
+	for (i = 0; i < ENVY24_TIMEOUT; i++) {
+		data = envy24_rdmt(sc, ENVY24_MT_AC97CMD, 1);
+		if (data & ENVY24_MT_AC97CMD_RDY) {
+			return 0;
+		}
+	}
+
+	return -1;
+}
+
+static int
+envy24_rdcd(kobj_t obj, void *devinfo, int regno)
+{
+	struct sc_info *sc = (struct sc_info *)devinfo;
+	u_int32_t data;
+	int i;
+
+#if(0)
+	device_printf(sc->dev, "envy24_rdcd(obj, sc, 0x%02x)\n", regno);
+#endif
+	envy24_wrmt(sc, ENVY24_MT_AC97IDX, (u_int32_t)regno, 1);
+	envy24_wrmt(sc, ENVY24_MT_AC97CMD, ENVY24_MT_AC97CMD_RD, 1);
+	for (i = 0; i < ENVY24_TIMEOUT; i++) {
+		data = envy24_rdmt(sc, ENVY24_MT_AC97CMD, 1);
+		if ((data & ENVY24_MT_AC97CMD_RD) == 0)
+			break;
+	}
+	data = envy24_rdmt(sc, ENVY24_MT_AC97DLO, 2);
+
+#if(0)
+	device_printf(sc->dev, "envy24_rdcd(): return 0x%x\n", data);
+#endif
+	return (int)data;
+}
+
+static int
+envy24_wrcd(kobj_t obj, void *devinfo, int regno, u_int16_t data)
+{
+	struct sc_info *sc = (struct sc_info *)devinfo;
+	u_int32_t cmd;
+	int i;
+
+#if(0)
+	device_printf(sc->dev, "envy24_wrcd(obj, sc, 0x%02x, 0x%04x)\n", regno, data);
+#endif
+	envy24_wrmt(sc, ENVY24_MT_AC97IDX, (u_int32_t)regno, 1);
+	envy24_wrmt(sc, ENVY24_MT_AC97DLO, (u_int32_t)data, 2);
+	envy24_wrmt(sc, ENVY24_MT_AC97CMD, ENVY24_MT_AC97CMD_WR, 1);
+	for (i = 0; i < ENVY24_TIMEOUT; i++) {
+		cmd = envy24_rdmt(sc, ENVY24_MT_AC97CMD, 1);
+		if ((cmd & ENVY24_MT_AC97CMD_WR) == 0)
+			break;
+	}
+
+	return 0;
+}
+
+static kobj_method_t envy24_ac97_methods[] = {
+	KOBJMETHOD(ac97_read,	envy24_rdcd),
+	KOBJMETHOD(ac97_write,	envy24_wrcd),
+	{0, 0}
+};
+AC97_DECLARE(envy24_ac97);
+
+/* -------------------------------------------------------------------- */
+
+/* GPIO access routines */
+
+static u_int32_t
+envy24_gpiord(struct sc_info *sc)
+{
+	return envy24_rdci(sc, ENVY24_CCI_GPIODAT);
+}
+
+static void
+envy24_gpiowr(struct sc_info *sc, u_int32_t data)
+{
+#if(0)
+	device_printf(sc->dev, "envy24_gpiowr(sc, 0x%02x)\n", data & 0xff);
+	return;
+#endif
+	envy24_wrci(sc, ENVY24_CCI_GPIODAT, data);
+	return;
+}
+
+static u_int32_t
+envy24_gpiogetmask(struct sc_info *sc)
+{
+	return envy24_rdci(sc, ENVY24_CCI_GPIOMASK);
+}
+
+static void
+envy24_gpiosetmask(struct sc_info *sc, u_int32_t mask)
+{
+	envy24_wrci(sc, ENVY24_CCI_GPIOMASK, mask);
+	return;
+}
+
+static u_int32_t
+envy24_gpiogetdir(struct sc_info *sc)
+{
+	return envy24_rdci(sc, ENVY24_CCI_GPIOCTL);
+}
+
+static void
+envy24_gpiosetdir(struct sc_info *sc, u_int32_t dir)
+{
+	envy24_wrci(sc, ENVY24_CCI_GPIOCTL, dir);
+	return;
+}
+
+/* -------------------------------------------------------------------- */
+
+/* M-Audio Delta series AK4524 access interface routine */
+
+struct envy24_delta_ak4524_codec {
+	struct ak452x_info *info;
+	struct sc_info *parent;
+	int dir;
+	int num;
+	int cs, cclk, cdti;
+};
+
+static void
+envy24_delta_ak4524_ctl(void *codec, unsigned int cs, unsigned int cclk, unsigned int cdti)
+{
+	u_int32_t data = 0;
+	struct envy24_delta_ak4524_codec *ptr = codec;
+
+#if(0)
+	device_printf(ptr->parent->dev, "--> %d, %d, %d\n", cs, cclk, cdti);
+#endif
+	data = envy24_gpiord(ptr->parent);
+	data &= ~(ptr->cs | ptr->cclk | ptr->cdti);
+	if (cs) data += ptr->cs;
+	if (cclk) data += ptr->cclk;
+	if (cdti) data += ptr->cdti;
+	envy24_gpiowr(ptr->parent, data);
+	return;
+}
+
+static void *
+envy24_delta_ak4524_create(device_t dev, void *info, int dir, int num)
+{
+	struct sc_info *sc = info;
+	struct envy24_delta_ak4524_codec *buff = NULL;
+
+#if(0)
+	device_printf(sc->dev, "envy24_delta_ak4524_create(dev, sc, %d, %d)\n", dir, num);
+#endif
+	
+	buff = malloc(sizeof(*buff), M_ENVY24, M_NOWAIT);
+	if (buff == NULL)
+		return NULL;
+
+	if (dir == PCMDIR_PLAY && sc->adc[num] != NULL)
+		buff->info = ((struct envy24_delta_ak4524_codec *)sc->adc[num])->info;
+	else if (dir == PCMDIR_REC && sc->dac[num] != NULL)
+		buff->info = ((struct envy24_delta_ak4524_codec *)sc->dac[num])->info;
+	else
+		buff->info = ak452x_create(dev, buff, num, envy24_delta_ak4524_ctl);
+	if (buff->info == NULL) {
+		free(buff, M_ENVY24);
+		return NULL;
+	}
+
+	buff->parent = sc;
+	buff->dir = dir;
+	buff->num = num;
+
+	return (void *)buff;
+}
+
+static void
+envy24_delta_ak4524_destroy(void *codec)
+{
+	struct envy24_delta_ak4524_codec *ptr = codec;
+	if (ptr == NULL)
+		return;
+#if(0)
+	device_printf(ptr->parent->dev, "envy24_delta_ak4524_destroy()\n");
+#endif
+
+	if (ptr->dir == PCMDIR_PLAY) {
+		if (ptr->parent->adc[ptr->num] == NULL)
+			ak452x_destroy(ptr->info);
+	}
+	else {
+		if (ptr->parent->dac[ptr->num] == NULL)
+			ak452x_destroy(ptr->info);
+	}
+
+	free(codec, M_ENVY24);
+}
+
+static void
+envy24_delta_ak4524_init(void *codec)
+{
+	u_int32_t gpiomask, gpiodir;
+	struct envy24_delta_ak4524_codec *ptr = codec;
+	if (ptr == NULL)
+		return;
+#if(0)
+	device_printf(ptr->parent->dev, "envy24_delta_ak4524_init()\n");
+#endif
+
+	/*
+	gpiomask = envy24_gpiogetmask(ptr->parent);
+	gpiomask &= ~(ENVY24_GPIO_AK4524_CDTI | ENVY24_GPIO_AK4524_CCLK | ENVY24_GPIO_AK4524_CS0 | ENVY24_GPIO_AK4524_CS1);
+	envy24_gpiosetmask(ptr->parent, gpiomask);
+	gpiodir = envy24_gpiogetdir(ptr->parent);
+	gpiodir |= ENVY24_GPIO_AK4524_CDTI | ENVY24_GPIO_AK4524_CCLK | ENVY24_GPIO_AK4524_CS0 | ENVY24_GPIO_AK4524_CS1;
+	envy24_gpiosetdir(ptr->parent, gpiodir);
+	*/
+	envy24_gpiosetmask(ptr->parent, ENVY24_GPIO_CS8414_STATUS);
+	envy24_gpiosetdir(ptr->parent, ~ENVY24_GPIO_CS8414_STATUS);
+	if (ptr->num == 0)
+		ptr->cs = ENVY24_GPIO_AK4524_CS0;
+	else
+		ptr->cs = ENVY24_GPIO_AK4524_CS1;
+	ptr->cclk = ENVY24_GPIO_AK4524_CCLK;
+	ptr->cdti = ENVY24_GPIO_AK4524_CDTI;
+	ak452x_settype(ptr->info, AK452X_TYPE_4524);
+	ak452x_setcif(ptr->info, ENVY24_DELTA_AK4524_CIF);
+	ak452x_setformat(ptr->info,
+	    AK452X_FORMAT_I2S | AK452X_FORMAT_256FSN | AK452X_FORMAT_1X);
+	ak452x_setdvc(ptr->info, 0);
+	ak452x_init(ptr->info);
+}
+
+static void
+envy24_delta_ak4524_reinit(void *codec)
+{
+	struct envy24_delta_ak4524_codec *ptr = codec;
+	if (ptr == NULL)
+		return;
+#if(0)
+	device_printf(ptr->parent->dev, "envy24_delta_ak4524_reinit()\n");
+#endif
+
+	ak452x_reinit(ptr->info);
+}
+
+static void
+envy24_delta_ak4524_setvolume(void *codec, int dir, unsigned int left, unsigned int right)
+{
+	struct envy24_delta_ak4524_codec *ptr = codec;
+	if (ptr == NULL)
+		return;
+#if(0)
+	device_printf(ptr->parent->dev, "envy24_delta_ak4524_set()\n");
+#endif
+
+	ak452x_set(ptr->info, dir, left, right);
+}
+
+/*
+  There is no need for AK452[48] codec to set sample rate
+  static void
+  envy24_delta_ak4524_setrate(struct envy24_delta_ak4524_codec *codec, int which, int rate)
+  {
+  }
+*/
+
+/* -------------------------------------------------------------------- */
+
+/* hardware access routeines */
+
+static struct {
+	u_int32_t speed;
+	u_int32_t code;
+} envy24_speedtab[] = {
+	{48000, ENVY24_MT_RATE_48000},
+	{24000, ENVY24_MT_RATE_24000},
+	{12000, ENVY24_MT_RATE_12000},
+	{9600, ENVY24_MT_RATE_9600},
+	{32000, ENVY24_MT_RATE_32000},
+	{16000, ENVY24_MT_RATE_16000},
+	{8000, ENVY24_MT_RATE_8000},
+	{96000, ENVY24_MT_RATE_96000},
+	{64000, ENVY24_MT_RATE_64000},
+	{44100, ENVY24_MT_RATE_44100},
+	{22050, ENVY24_MT_RATE_22050},
+	{11025, ENVY24_MT_RATE_11025},
+	{88200, ENVY24_MT_RATE_88200},
+	{0, 0x10}
+};
+
+static int
+envy24_setspeed(struct sc_info *sc, u_int32_t speed) {
+	u_int32_t code;
+	int i = 0;
+
+#if(0)
+	device_printf(sc->dev, "envy24_setspeed(sc, %d)\n", speed);
+#endif
+	if (speed == 0) {
+		code = ENVY24_MT_RATE_SPDIF; /* external master clock */
+		envy24_slavecd(sc);
+	}
+	else {
+		for (i = 0; envy24_speedtab[i].speed != 0; i++) {
+			if (envy24_speedtab[i].speed == speed)
+				break;
+		}
+		code = envy24_speedtab[i].code;
+	}
+#if(0)
+	device_printf(sc->dev, "envy24_setspeed(): speed %d/code 0x%04x\n", envy24_speedtab[i].speed, code);
+#endif
+	if (code < 0x10) {
+		envy24_wrmt(sc, ENVY24_MT_RATE, code, 1);
+		code = envy24_rdmt(sc, ENVY24_MT_RATE, 1);
+		code &= ENVY24_MT_RATE_MASK;
+		for (i = 0; envy24_speedtab[i].code < 0x10; i++) {
+			if (envy24_speedtab[i].code == code)
+				break;
+		}
+		speed = envy24_speedtab[i].speed;
+	}
+	else
+		speed = 0;
+
+#if(0)
+	device_printf(sc->dev, "envy24_setspeed(): return %d\n", speed);
+#endif
+	return speed;
+}
+
+static void
+envy24_setvolume(struct sc_info *sc, unsigned ch)
+{
+#if(0)
+	device_printf(sc->dev, "envy24_setvolume(sc, %d)\n", ch);
+#endif
+	envy24_wrmt(sc, ENVY24_MT_VOLIDX, ch * 2, 1);
+	envy24_wrmt(sc, ENVY24_MT_VOLUME, 0x7f00 | sc->left[ch], 2);
+	envy24_wrmt(sc, ENVY24_MT_VOLIDX, ch * 2 + 1, 1);
+	envy24_wrmt(sc, ENVY24_MT_VOLUME, (sc->right[ch] << 8) | 0x7f, 2);
+}
+
+static void
+envy24_mutevolume(struct sc_info *sc, unsigned ch)
+{
+	u_int32_t vol;
+
+#if(0)
+	device_printf(sc->dev, "envy24_mutevolume(sc, %d)\n", ch);
+#endif
+	vol = ENVY24_VOL_MUTE << 8 | ENVY24_VOL_MUTE;
+	envy24_wrmt(sc, ENVY24_MT_VOLIDX, ch * 2, 1);
+	envy24_wrmt(sc, ENVY24_MT_VOLUME, vol, 2);
+	envy24_wrmt(sc, ENVY24_MT_VOLIDX, ch * 2 + 1, 1);
+	envy24_wrmt(sc, ENVY24_MT_VOLUME, vol, 2);
+}
+
+static u_int32_t
+envy24_gethwptr(struct sc_info *sc, int dir)
+{
+	int unit, regno;
+	u_int32_t ptr, rtn;
+
+#if(0)
+	device_printf(sc->dev, "envy24_gethwptr(sc, %d)\n", dir);
+#endif
+	if (dir == PCMDIR_PLAY) {
+		rtn = sc->psize / 4;
+		unit = ENVY24_PLAY_BUFUNIT / 4;
+		regno = ENVY24_MT_PCNT;
+	}
+	else {
+		rtn = sc->rsize / 4;
+		unit = ENVY24_REC_BUFUNIT / 4;
+		regno = ENVY24_MT_RCNT;
+	}
+
+	ptr = envy24_rdmt(sc, regno, 2);
+	rtn -= (ptr + 1);
+	rtn /= unit;
+
+#if(0)
+	device_printf(sc->dev, "envy24_gethwptr(): return %d\n", rtn);
+#endif
+	return rtn;
+}
+
+static void
+envy24_updintr(struct sc_info *sc, int dir)
+{
+	int regptr, regintr;
+	u_int32_t mask, intr;
+	u_int32_t ptr, size, cnt;
+	u_int16_t blk;
+
+#if(0)
+	device_printf(sc->dev, "envy24_updintr(sc, %d)\n", dir);
+#endif
+	if (dir == PCMDIR_PLAY) {
+		blk = sc->blk[0];
+		size = sc->psize / 4;
+		regptr = ENVY24_MT_PCNT;
+		regintr = ENVY24_MT_PTERM;
+		mask = ~ENVY24_MT_INT_PMASK;
+	}
+	else {
+		blk = sc->blk[1];
+		size = sc->rsize / 4;
+		regptr = ENVY24_MT_RCNT;
+		regintr = ENVY24_MT_RTERM;
+		mask = ~ENVY24_MT_INT_RMASK;
+	}
+
+	ptr = size - envy24_rdmt(sc, regptr, 2) - 1;
+	/*
+	cnt = blk - ptr % blk - 1;
+	if (cnt == 0)
+		cnt = blk - 1;
+	*/
+	cnt = blk - 1;
+#if(0)
+	device_printf(sc->dev, "envy24_updintr():ptr = %d, blk = %d, cnt = %d\n", ptr, blk, cnt);
+#endif
+	envy24_wrmt(sc, regintr, cnt, 2);
+	intr = envy24_rdmt(sc, ENVY24_MT_INT, 1);
+#if(0)
+	device_printf(sc->dev, "envy24_updintr():intr = 0x%02x, mask = 0x%02x\n", intr, mask);
+#endif
+	envy24_wrmt(sc, ENVY24_MT_INT, intr & mask, 1);
+#if(0)
+	device_printf(sc->dev, "envy24_updintr():INT-->0x%02x\n",
+		      envy24_rdmt(sc, ENVY24_MT_INT, 1));
+#endif
+
+	return;
+}
+
+static void
+envy24_maskintr(struct sc_info *sc, int dir)
+{
+	u_int32_t mask, intr;
+
+#if(0)
+	device_printf(sc->dev, "envy24_maskintr(sc, %d)\n", dir);
+#endif
+	if (dir == PCMDIR_PLAY)
+		mask = ENVY24_MT_INT_PMASK;
+	else
+		mask = ENVY24_MT_INT_RMASK;
+	intr = envy24_rdmt(sc, ENVY24_MT_INT, 1);
+	envy24_wrmt(sc, ENVY24_MT_INT, intr | mask, 1);
+
+	return;
+}
+
+static int
+envy24_checkintr(struct sc_info *sc, int dir)
+{
+	u_int32_t mask, stat, intr, rtn;
+
+#if(0)
+	device_printf(sc->dev, "envy24_checkintr(sc, %d)\n", dir);
+#endif
+	intr = envy24_rdmt(sc, ENVY24_MT_INT, 1);
+	if (dir == PCMDIR_PLAY) {
+		if ((rtn = intr & ENVY24_MT_INT_PSTAT) != 0) {
+			mask = ~ENVY24_MT_INT_RSTAT;
+			stat = ENVY24_MT_INT_PSTAT | ENVY24_MT_INT_PMASK;
+			envy24_wrmt(sc, ENVY24_MT_INT, (intr & mask) | stat, 1);
+		}
+	}
+	else {
+		if ((rtn = intr & ENVY24_MT_INT_RSTAT) != 0) {
+			mask = ~ENVY24_MT_INT_PSTAT;
+			stat = ENVY24_MT_INT_RSTAT | ENVY24_MT_INT_RMASK;
+			envy24_wrmt(sc, ENVY24_MT_INT, (intr & mask) | stat, 1);
+		}
+	}
+
+	return rtn;
+}
+
+static void
+envy24_start(struct sc_info *sc, int dir)
+{
+	u_int32_t stat, sw;
+
+#if(0)
+	device_printf(sc->dev, "envy24_start(sc, %d)\n", dir);
+#endif
+	if (dir == PCMDIR_PLAY)
+		sw = ENVY24_MT_PCTL_PSTART;
+	else
+		sw = ENVY24_MT_PCTL_RSTART;
+
+	stat = envy24_rdmt(sc, ENVY24_MT_PCTL, 1);
+	envy24_wrmt(sc, ENVY24_MT_PCTL, stat | sw, 1);
+#if(0)
+	DELAY(100);
+	device_printf(sc->dev, "PADDR:0x%08x\n", envy24_rdmt(sc, ENVY24_MT_PADDR, 4));
+	device_printf(sc->dev, "PCNT:%ld\n", envy24_rdmt(sc, ENVY24_MT_PCNT, 2));
+#endif
+
+	return;
+}
+
+static void
+envy24_stop(struct sc_info *sc, int dir)
+{
+	u_int32_t stat, sw;
+
+#if(0)
+	device_printf(sc->dev, "envy24_stop(sc, %d)\n", dir);
+#endif
+	if (dir == PCMDIR_PLAY)
+		sw = ~ENVY24_MT_PCTL_PSTART;
+	else
+		sw = ~ENVY24_MT_PCTL_RSTART;
+
+	stat = envy24_rdmt(sc, ENVY24_MT_PCTL, 1);
+	envy24_wrmt(sc, ENVY24_MT_PCTL, stat & sw, 1);
+
+	return;
+}
+
+static int
+envy24_route(struct sc_info *sc, int dac, int class, int adc, int rev)
+{
+	u_int32_t reg, mask;
+	u_int32_t left, right;
+
+#if(0)
+	device_printf(sc->dev, "envy24_route(sc, %d, %d, %d, %d)\n",
+	    dac, class, adc, rev);
+#endif
+	/* parameter pattern check */
+	if (dac < 0 || ENVY24_ROUTE_DAC_SPDIF < dac)
+		return -1;
+	if (class == ENVY24_ROUTE_CLASS_MIX &&
+	    (dac != ENVY24_ROUTE_DAC_1 && dac != ENVY24_ROUTE_DAC_SPDIF))
+		return -1;
+	if (rev) {
+		left = ENVY24_ROUTE_RIGHT;
+		right = ENVY24_ROUTE_LEFT;
+	}
+	else {
+		left = ENVY24_ROUTE_LEFT;
+		right = ENVY24_ROUTE_RIGHT;
+	}
+
+	if (dac == ENVY24_ROUTE_DAC_SPDIF) {
+		reg = class | class << 2 |
+			((adc << 1 | left) | left << 3) << 8 |
+			((adc << 1 | right) | right << 3) << 12;
+#if(0)
+		device_printf(sc->dev, "envy24_route(): MT_SPDOUT-->0x%04x\n", reg);
+#endif
+		envy24_wrmt(sc, ENVY24_MT_SPDOUT, reg, 2);
+	}
+	else {
+		mask = ~(0x0303 << dac * 2);
+		reg = envy24_rdmt(sc, ENVY24_MT_PSDOUT, 2);
+		reg = (reg & mask) | ((class | class << 8) << dac * 2);
+#if(0)
+		device_printf(sc->dev, "envy24_route(): MT_PSDOUT-->0x%04x\n", reg);
+#endif
+		envy24_wrmt(sc, ENVY24_MT_PSDOUT, reg, 2);
+		mask = ~(0xff << dac * 8);
+		reg = envy24_rdmt(sc, ENVY24_MT_RECORD, 4);
+		reg = (reg & mask) |
+			(((adc << 1 | left) | left << 3) |
+			 ((adc << 1 | right) | right << 3) << 4) << dac * 8;
+#if(0)
+		device_printf(sc->dev, "envy24_route(): MT_RECORD-->0x%08x\n", reg);
+#endif
+		envy24_wrmt(sc, ENVY24_MT_RECORD, reg, 4);
+	}
+
+	return 0;
+}
+
+/* -------------------------------------------------------------------- */
+
+/* buffer copy routines */
+static void
+envy24_p32sl(struct sc_chinfo *ch)
+{
+	int length;
+	sample32_t *dmabuf;
+	u_int32_t *data;
+	int src, dst, ssize, dsize, slot;
+	int i;
+
+	length = sndbuf_getready(ch->buffer) / 8;
+	dmabuf = ch->parent->pbuf;
+	data = (u_int32_t *)ch->data;
+	src = sndbuf_getreadyptr(ch->buffer) / 4;
+	dst = src / 2 + ch->offset;
+	ssize = ch->size / 4;
+	dsize = ch->size / 8;
+	slot = ch->num * 2;
+
+	for (i = 0; i < length; i++) {
+		dmabuf[dst * ENVY24_PLAY_CHNUM + slot] = data[src];
+		dmabuf[dst * ENVY24_PLAY_CHNUM + slot + 1] = data[src + 1];
+		dst++;
+		dst %= dsize;
+		src += 2;
+		src %= ssize;
+	}
+	
+	return;
+}
+
+static void
+envy24_p16sl(struct sc_chinfo *ch)
+{
+	int length;
+	sample32_t *dmabuf;
+	u_int16_t *data;
+	int src, dst, ssize, dsize, slot;
+	int i;
+
+#if(0)
+	device_printf(ch->parent->dev, "envy24_p16sl()\n");
+#endif
+	length = sndbuf_getready(ch->buffer) / 4;
+	dmabuf = ch->parent->pbuf;
+	data = (u_int16_t *)ch->data;
+	src = sndbuf_getreadyptr(ch->buffer) / 2;
+	dst = src / 2 + ch->offset;
+	ssize = ch->size / 2;
+	dsize = ch->size / 4;
+	slot = ch->num * 2;
+#if(0)
+	device_printf(ch->parent->dev, "envy24_p16sl():%lu-->%lu(%lu)\n", src, dst, length);
+#endif
+	
+	for (i = 0; i < length; i++) {
+		dmabuf[dst * ENVY24_PLAY_CHNUM + slot] = (u_int32_t)data[src] << 16;
+		dmabuf[dst * ENVY24_PLAY_CHNUM + slot + 1] = (u_int32_t)data[src + 1] << 16;
+#if(0)
+		if (i < 16) {
+			printf("%08x", dmabuf[dst * ENVY24_PLAY_CHNUM + slot]);
+			printf("%08x", dmabuf[dst * ENVY24_PLAY_CHNUM + slot + 1]);
+		}
+#endif
+		dst++;
+		dst %= dsize;
+		src += 2;
+		src %= ssize;
+	}
+#if(0)
+	printf("\n");
+#endif
+	
+	return;
+}
+
+static void
+envy24_p8u(struct sc_chinfo *ch)
+{
+	int length;
+	sample32_t *dmabuf;
+	u_int8_t *data;
+	int src, dst, ssize, dsize, slot;
+	int i;
+
+	length = sndbuf_getready(ch->buffer) / 2;
+	dmabuf = ch->parent->pbuf;
+	data = (u_int8_t *)ch->data;
+	src = sndbuf_getreadyptr(ch->buffer);
+	dst = src / 2 + ch->offset;
+	ssize = ch->size;
+	dsize = ch->size / 4;
+	slot = ch->num * 2;
+	
+	for (i = 0; i < length; i++) {
+		dmabuf[dst * ENVY24_PLAY_CHNUM + slot] = ((u_int32_t)data[src] ^ 0x80) << 24;
+		dmabuf[dst * ENVY24_PLAY_CHNUM + slot + 1] = ((u_int32_t)data[src + 1] ^ 0x80) << 24;
+		dst++;
+		dst %= dsize;
+		src += 2;
+		src %= ssize;
+	}
+	
+	return;
+}
+
+static void
+envy24_r32sl(struct sc_chinfo *ch)
+{
+	int length;
+	sample32_t *dmabuf;
+	u_int32_t *data;
+	int src, dst, ssize, dsize, slot;
+	int i;
+
+	length = sndbuf_getfree(ch->buffer) / 8;
+	dmabuf = ch->parent->rbuf;
+	data = (u_int32_t *)ch->data;
+	dst = sndbuf_getfreeptr(ch->buffer) / 4;
+	src = dst / 2 + ch->offset;
+	dsize = ch->size / 4;
+	ssize = ch->size / 8;
+	slot = (ch->num - ENVY24_CHAN_REC_ADC1) * 2;
+
+	for (i = 0; i < length; i++) {
+		data[dst] = dmabuf[src * ENVY24_REC_CHNUM + slot];
+		data[dst + 1] = dmabuf[src * ENVY24_REC_CHNUM + slot + 1];
+		dst += 2;
+		dst %= dsize;
+		src++;
+		src %= ssize;
+	}
+	
+	return;
+}
+
+static void
+envy24_r16sl(struct sc_chinfo *ch)
+{
+	int length;
+	sample32_t *dmabuf;
+	u_int32_t *data;
+	int src, dst, ssize, dsize, slot;
+	int i;
+
+	length = sndbuf_getfree(ch->buffer) / 4;
+	dmabuf = ch->parent->rbuf;
+	data = (u_int16_t *)ch->data;
+	dst = sndbuf_getfreeptr(ch->buffer) / 2;
+	src = dst / 2 + ch->offset;
+	dsize = ch->size / 2;
+	ssize = ch->size / 8;
+	slot = (ch->num - ENVY24_CHAN_REC_ADC1) * 2;
+
+	for (i = 0; i < length; i++) {
+		data[dst] = dmabuf[src * ENVY24_REC_CHNUM + slot];
+		data[dst + 1] = dmabuf[src * ENVY24_REC_CHNUM + slot + 1];
+		dst += 2;
+		dst %= dsize;
+		src++;
+		src %= ssize;
+	}
+	
+	return;
+}
+
+/* -------------------------------------------------------------------- */
+
+/* channel interface */
+static void *
+envy24chan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b, struct pcm_channel *c, int dir)
+{
+	struct sc_info	*sc = (struct sc_info *)devinfo;
+	struct sc_chinfo *ch;
+	unsigned num;
+
+#if(0)
+	device_printf(sc->dev, "envy24chan_init(obj, devinfo, b, c, %d)\n", dir);
+#endif
+	snd_mtxlock(sc->lock);
+	if ((sc->chnum > ENVY24_CHAN_PLAY_SPDIF && dir != PCMDIR_REC) ||
+	    (sc->chnum < ENVY24_CHAN_REC_ADC1 && dir != PCMDIR_PLAY)) {
+		snd_mtxunlock(sc->lock);
+		return NULL;
+	}
+	num = sc->chnum;
+
+	ch = &sc->chan[num];
+	ch->size = 8 * ENVY24_SAMPLE_NUM;
+	ch->data = malloc(ch->size, M_ENVY24, M_NOWAIT);
+	if (ch->data == NULL) {
+		ch->size = 0;
+		ch = NULL;
+	}
+	else {
+		ch->buffer = b;
+		ch->channel = c;
+		ch->parent = sc;
+		ch->dir = dir;
+		/* set channel map */
+		ch->num = envy24_chanmap[num];
+		sndbuf_setup(ch->buffer, ch->data, ch->size);
+		/* these 2 values are dummy */
+		ch->unit = 4;
+		ch->blk = 10240;
+	}
+	snd_mtxunlock(sc->lock);
+
+	return ch;
+}
+
+static int
+envy24chan_free(kobj_t obj, void *data)
+{
+	struct sc_chinfo *ch = data;
+	struct sc_info *sc = ch->parent;
+
+#if(0)
+	device_printf(sc->dev, "envy24chan_free()\n");
+#endif
+	snd_mtxlock(sc->lock);
+	if (ch->data != NULL) {
+		free(ch->data, M_ENVY24);
+		ch->data = NULL;
+	}
+	snd_mtxunlock(sc->lock);
+
+	return 0;
+}
+
+static int
+envy24chan_setformat(kobj_t obj, void *data, u_int32_t format)
+{
+	struct sc_chinfo *ch = data;
+	struct sc_info *sc = ch->parent;
+	struct envy24_emldma *emltab;
+	unsigned int bcnt, bsize;
+	int i;
+
+#if(0)
+	device_printf(sc->dev, "envy24chan_setformat(obj, data, 0x%08x)\n", format);
+#endif
+	snd_mtxlock(sc->lock);
+	/* check and get format related information */
+	if (ch->dir == PCMDIR_PLAY)
+		emltab = envy24_pemltab;
+	else
+		emltab = envy24_remltab;
+	if (emltab == NULL) {
+		snd_mtxunlock(sc->lock);
+		return -1;
+	}
+	for (i = 0; emltab[i].format != 0; i++)
+		if (emltab[i].format == format)
+			break;
+	if (emltab[i].format == 0) {
+		snd_mtxunlock(sc->lock);
+		return -1;
+	}
+
+	/* set format information */
+	ch->format = format;
+	ch->emldma = emltab[i].emldma;
+	if (ch->unit > emltab[i].unit)
+		ch->blk *= ch->unit / emltab[i].unit;
+	else
+		ch->blk /= emltab[i].unit / ch->unit;
+	ch->unit = emltab[i].unit;
+
+	/* set channel buffer information */
+	ch->size = ch->unit * ENVY24_SAMPLE_NUM;
+	if (ch->dir == PCMDIR_PLAY)
+		bsize = ch->blk * 4 / ENVY24_PLAY_BUFUNIT;
+	else
+		bsize = ch->blk * 4 / ENVY24_REC_BUFUNIT;
+	bsize *= ch->unit;
+	bcnt = ch->size / bsize;
+	sndbuf_resize(ch->buffer, bcnt, bsize);
+	snd_mtxunlock(sc->lock);
+
+#if(0)
+	device_printf(sc->dev, "envy24chan_setformat(): return 0x%08x\n", 0);
+#endif
+	return 0;
+}
+
+/*
+  IMPLEMENT NOTICE: In this driver, setspeed function only do setting
+  of speed information value. And real hardware speed setting is done
+  at start triggered(see envy24chan_trigger()). So, at this function
+  is called, any value that ENVY24 can use is able to set. But, at
+  start triggerd, some other channel is running, and that channel's
+  speed isn't same with, then trigger function will fail.
+*/
+static int
+envy24chan_setspeed(kobj_t obj, void *data, u_int32_t speed)
+{
+	struct sc_chinfo *ch = data;
+	u_int32_t val, prev;
+	int i;
+
+#if(0)
+	device_printf(ch->parent->dev, "envy24chan_setspeed(obj, data, %d)\n", speed);
+#endif
+	prev = 0x7fffffff;
+	for (i = 0; (val = envy24_speed[i]) != 0; i++) {
+		if (abs(val - speed) < abs(prev - speed))
+			prev = val;
+		else
+			break;
+	}
+	ch->speed = prev;
+	
+#if(0)
+	device_printf(ch->parent->dev, "envy24chan_setspeed(): return %d\n", ch->speed);
+#endif
+	return ch->speed;
+}
+
+static int
+envy24chan_setblocksize(kobj_t obj, void *data, u_int32_t blocksize)
+{
+	struct sc_chinfo *ch = data;
+	struct sc_info *sc = ch->parent;
+	u_int32_t size, prev;
+
+#if(0)
+	device_printf(sc->dev, "envy24chan_setblocksize(obj, data, %d)\n", blocksize);
+#endif
+	prev = 0x7fffffff;
+	snd_mtxlock(sc->lock);
+	for (size = ch->size / 2; size > 0; size /= 2) {
+		if (abs(size - blocksize) < abs(prev - blocksize))
+			prev = size;
+		else
+			break;
+	}
+
+	ch->blk = prev / ch->unit;
+	if (ch->dir == PCMDIR_PLAY)
+		ch->blk *= ENVY24_PLAY_BUFUNIT / 4;
+	else
+		ch->blk *= ENVY24_REC_BUFUNIT / 4;
+	snd_mtxunlock(sc->lock);
+
+#if(0)
+	device_printf(sc->dev, "envy24chan_setblocksize(): return %d\n", prev);
+#endif
+	return prev;
+}
+
+/* semantic note: must start at beginning of buffer */
+static int
+envy24chan_trigger(kobj_t obj, void *data, int go)
+{
+	struct sc_chinfo *ch = data;
+	struct sc_info *sc = ch->parent;
+	u_int32_t ptr;
+	int slot;
+	int i;
+
+#if(0)
+	device_printf(sc->dev, "envy24chan_trigger(obj, data, %d)\n", go);
+#endif
+	snd_mtxlock(sc->lock);
+	if (ch->dir == PCMDIR_PLAY)
+		slot = 0;
+	else
+		slot = 1;
+	switch (go) {
+	case PCMTRIG_START:
+#if(0)
+		device_printf(sc->dev, "envy24chan_trigger(): start\n");
+#endif
+		/* check or set channel speed */
+		if (sc->run[0] == 0 && sc->run[1] == 0) {
+			sc->speed = envy24_setspeed(sc, ch->speed);
+			sc->caps[0].minspeed = sc->caps[0].maxspeed = sc->speed;
+			sc->caps[1].minspeed = sc->caps[1].maxspeed = sc->speed;
+		}
+		else if (ch->speed != 0 && ch->speed != sc->speed)
+			return -1;
+		if (ch->speed == 0)
+			ch->channel->speed = sc->speed;
+		/* start or enable channel */
+		sc->run[slot]++;
+		if (sc->run[slot] == 1) {
+			/* first channel */
+			ch->offset = 0;
+			sc->blk[slot] = ch->blk;
+		}
+		else {
+			ptr = envy24_gethwptr(sc, ch->dir);
+			ch->offset = ((ptr / ch->blk + 1) * ch->blk %
+			    (ch->size / 4)) * 4 / ch->unit;
+			if (ch->blk < sc->blk[slot])
+				sc->blk[slot] = ch->blk;
+		}
+		if (ch->dir == PCMDIR_PLAY) {
+			ch->emldma(ch);
+			envy24_setvolume(sc, ch->num);
+		}
+		envy24_updintr(sc, ch->dir);
+		if (sc->run[slot] == 1)
+			envy24_start(sc, ch->dir);
+		ch->run = 1;
+		break;
+	case PCMTRIG_EMLDMAWR:
+#if(0)
+		device_printf(sc->dev, "envy24chan_trigger(): emldmawr\n");
+#endif
+		if (ch->run != 1)
+			return -1;
+		ch->emldma(ch);
+		break;
+	case PCMTRIG_EMLDMARD:
+#if(0)
+		device_printf(sc->dev, "envy24chan_trigger(): emldmard\n");
+#endif
+		if (ch->run != 1)
+			return -1;
+		ch->emldma(ch);
+		break;
+	case PCMTRIG_ABORT:
+#if(0)
+		device_printf(sc->dev, "envy24chan_trigger(): abort\n");
+#endif
+		ch->run = 0;
+		sc->run[slot]--;
+		if (ch->dir == PCMDIR_PLAY)
+			envy24_mutevolume(sc, ch->num);
+		if (sc->run[slot] == 0) {
+			envy24_stop(sc, ch->dir);
+			sc->intr[slot] = 0;
+		}
+		else if (ch->blk == sc->blk[slot]) {
+			sc->blk[slot] = ENVY24_SAMPLE_NUM / 2;
+			for (i = 0; i < ENVY24_CHAN_NUM; i++) {
+				if (sc->chan[i].dir == ch->dir &&
+				    sc->chan[i].run == 1 &&
+				    sc->chan[i].blk < sc->blk[slot])
+					sc->blk[slot] = sc->chan[i].blk;
+			}
+			if (ch->blk != sc->blk[slot])
+				envy24_updintr(sc, ch->dir);
+		}
+		break;
+	}
+	snd_mtxunlock(sc->lock);
+
+	return 0;
+}
+
+static int
+envy24chan_getptr(kobj_t obj, void *data)
+{
+	struct sc_chinfo *ch = data;
+	struct sc_info *sc = ch->parent;
+	u_int32_t ptr;
+	int rtn;
+
+#if(0)
+	device_printf(sc->dev, "envy24chan_getptr()\n");
+#endif
+	snd_mtxlock(sc->lock);
+	ptr = envy24_gethwptr(sc, ch->dir);
+	rtn = ptr * ch->unit;
+	snd_mtxunlock(sc->lock);
+
+#if(0)
+	device_printf(sc->dev, "envy24chan_getptr(): return %d\n",
+	    rtn);
+#endif
+	return rtn;
+}
+
+static struct pcmchan_caps *
+envy24chan_getcaps(kobj_t obj, void *data)
+{
+	struct sc_chinfo *ch = data;
+	struct sc_info *sc = ch->parent;
+	struct pcmchan_caps *rtn;
+
+#if(0)
+	device_printf(sc->dev, "envy24chan_getcaps()\n");
+#endif
+	snd_mtxlock(sc->lock);
+	if (ch->dir == PCMDIR_PLAY) {
+		if (sc->run[0] == 0)
+			rtn = &envy24_playcaps;
+		else
+			rtn = &sc->caps[0];
+	}
+	else {
+		if (sc->run[1] == 0)
+			rtn = &envy24_reccaps;
+		else
+			rtn = &sc->caps[1];
+	}
+	snd_mtxunlock(sc->lock);
+
+	return rtn;
+}
+
+static kobj_method_t envy24chan_methods[] = {
+	KOBJMETHOD(channel_init,		envy24chan_init),
+	KOBJMETHOD(channel_free,		envy24chan_free),
+	KOBJMETHOD(channel_setformat,		envy24chan_setformat),
+	KOBJMETHOD(channel_setspeed,		envy24chan_setspeed),
+	KOBJMETHOD(channel_setblocksize,	envy24chan_setblocksize),
+	KOBJMETHOD(channel_trigger,		envy24chan_trigger),
+	KOBJMETHOD(channel_getptr,		envy24chan_getptr),
+	KOBJMETHOD(channel_getcaps,		envy24chan_getcaps),
+	{ 0, 0 }
+};
+CHANNEL_DECLARE(envy24chan);
+
+/* -------------------------------------------------------------------- */
+
+/* mixer interface */
+
+static int
+envy24mixer_init(struct snd_mixer *m)
+{
+	struct sc_info *sc = mix_getdevinfo(m);
+
+#if(0)
+	device_printf(sc->dev, "envy24mixer_init()\n");
+#endif
+	if (sc == NULL)
+		return -1;
+
+	/* set volume control rate */
+	snd_mtxlock(sc->lock);
+	envy24_wrmt(sc, ENVY24_MT_VOLRATE, 0x30, 1); /* 0x30 is default value */
+
+	mix_setdevs(m, ENVY24_MIX_MASK);
+	mix_setrecdevs(m, ENVY24_MIX_REC_MASK);
+	snd_mtxunlock(sc->lock);
+
+	return 0;
+}
+
+static int
+envy24mixer_reinit(struct snd_mixer *m)
+{
+	struct sc_info *sc = mix_getdevinfo(m);
+
+	if (sc == NULL)
+		return -1;
+#if(0)
+	device_printf(sc->dev, "envy24mixer_reinit()\n");
+#endif
+
+	return 0;
+}
+
+static int
+envy24mixer_uninit(struct snd_mixer *m)
+{
+	struct sc_info *sc = mix_getdevinfo(m);
+
+	if (sc == NULL)
+		return -1;
+#if(0)
+	device_printf(sc->dev, "envy24mixer_uninit()\n");
+#endif
+
+	return 0;
+}
+
+static int
+envy24mixer_set(struct snd_mixer *m, unsigned dev, unsigned left, unsigned right)
+{
+	struct sc_info *sc = mix_getdevinfo(m);
+	int ch = envy24_mixmap[dev];
+	int hwch;
+	int i;
+
+	if (sc == NULL)
+		return -1;
+	if (dev == 0 && sc->cfg->codec->setvolume == NULL)
+		return -1;
+	if (dev != 0 && ch == -1)
+		return -1;
+	hwch = envy24_chanmap[ch];
+#if(0)
+	device_printf(sc->dev, "envy24mixer_set(m, %d, %d, %d)\n",
+	    dev, left, right);
+#endif
+
+	snd_mtxlock(sc->lock);
+	if (dev == 0) {
+		for (i = 0; i < sc->dacn; i++) {
+			sc->cfg->codec->setvolume(sc->dac[i], PCMDIR_PLAY, left, right);
+		}
+	}
+	else {
+		/* set volume value for hardware */
+		if ((sc->left[hwch] = 100 - left) > ENVY24_VOL_MIN)
+			sc->left[hwch] = ENVY24_VOL_MUTE;
+		if ((sc->right[hwch] = 100 - right) > ENVY24_VOL_MIN)
+			sc->right[hwch] = ENVY24_VOL_MUTE;
+
+		/* set volume for record channel and running play channel */
+		if (hwch > ENVY24_CHAN_PLAY_SPDIF || sc->chan[ch].run)
+			envy24_setvolume(sc, hwch);
+	}
+	snd_mtxunlock(sc->lock);
+
+	return right << 8 | left;
+}
+
+static u_int32_t
+envy24mixer_setrecsrc(struct snd_mixer *m, u_int32_t src)
+{
+	struct sc_info *sc = mix_getdevinfo(m);
+	int ch = envy24_mixmap[src];
+#if(0)
+	device_printf(sc->dev, "envy24mixer_setrecsrc(m, %d)\n", src);
+#endif
+
+	if (ch > ENVY24_CHAN_PLAY_SPDIF)
+		sc->src = ch;
+	return src;
+}
+
+static kobj_method_t envy24mixer_methods[] = {
+	KOBJMETHOD(mixer_init,		envy24mixer_init),
+	KOBJMETHOD(mixer_reinit,	envy24mixer_reinit),
+	KOBJMETHOD(mixer_uninit,	envy24mixer_uninit),
+	KOBJMETHOD(mixer_set,		envy24mixer_set),
+	KOBJMETHOD(mixer_setrecsrc,	envy24mixer_setrecsrc),
+	{ 0, 0 }
+};
+MIXER_DECLARE(envy24mixer);
+
+/* -------------------------------------------------------------------- */
+
+/* The interrupt handler */
+static void
+envy24_intr(void *p)
+{
+	struct sc_info *sc = (struct sc_info *)p;
+	struct sc_chinfo *ch;
+	u_int32_t ptr, dsize, feed;
+	int i;
+
+#if(0)
+	device_printf(sc->dev, "envy24_intr()\n");
+#endif
+	snd_mtxlock(sc->lock);
+	if (envy24_checkintr(sc, PCMDIR_PLAY)) {
+#if(0)
+		device_printf(sc->dev, "envy24_intr(): play\n");
+#endif
+		dsize = sc->psize / 4;
+		ptr = dsize - envy24_rdmt(sc, ENVY24_MT_PCNT, 2) - 1;
+#if(0)
+		device_printf(sc->dev, "envy24_intr(): ptr = %d-->", ptr);
+#endif
+		ptr -= ptr % sc->blk[0];
+		feed = (ptr + dsize - sc->intr[0]) % dsize; 
+#if(0)
+		printf("%d intr = %d feed = %d\n", ptr, sc->intr[0], feed);
+#endif
+		for (i = ENVY24_CHAN_PLAY_DAC1; i <= ENVY24_CHAN_PLAY_SPDIF; i++) {
+			ch = &sc->chan[i];
+#if(0)
+			if (ch->run)
+				device_printf(sc->dev, "envy24_intr(): chan[%d].blk = %d\n", i, ch->blk);
+#endif
+			if (ch->run && ch->blk <= feed)
+				chn_intr(ch->channel);
+		}
+		sc->intr[0] = ptr;
+		envy24_updintr(sc, PCMDIR_PLAY);
+	}
+	if (envy24_checkintr(sc, PCMDIR_REC)) {
+#if(0)
+		device_printf(sc->dev, "envy24_intr(): rec\n");
+#endif
+		dsize = sc->rsize / 4;
+		ptr = dsize - envy24_rdmt(sc, ENVY24_MT_RCNT, 2) - 1;
+		ptr -= ptr % sc->blk[1];
+		feed = (ptr + dsize - sc->intr[1]) % dsize; 
+		for (i = ENVY24_CHAN_REC_ADC1; i <= ENVY24_CHAN_REC_SPDIF; i++) {
+			ch = &sc->chan[i];
+			if (ch->run && ch->blk <= feed)
+				chn_intr(ch->channel);
+		}
+		sc->intr[1] = ptr;
+		envy24_updintr(sc, PCMDIR_REC);
+	}
+	snd_mtxunlock(sc->lock);
+
+	return;
+}
+
+/*
+ * Probe and attach the card
+ */
+
+static int
+envy24_pci_probe(device_t dev)
+{
+	u_int16_t sv, sd;
+	int i;
+
+#if(0)
+	printf("envy24_pci_probe()\n");
+#endif
+	if (pci_get_device(dev) == PCID_ENVY24 &&
+	    pci_get_vendor(dev) == PCIV_ENVY24) {
+		sv = pci_get_subvendor(dev);
+		sd = pci_get_subdevice(dev);
+		for (i = 0; cfg_table[i].subvendor != 0 || cfg_table[i].subdevice != 0; i++) {
+			if (cfg_table[i].subvendor == sv &&
+			    cfg_table[i].subdevice == sd) {
+				break;
+			}
+		}
+		device_set_desc(dev, cfg_table[i].name);
+#if(0)
+		printf("envy24_pci_probe(): return 0\n");
+#endif
+		return 0;
+	}
+	else {
+#if(0)
+		printf("envy24_pci_probe(): return ENXIO\n");
+#endif
+		return ENXIO;
+	}
+}
+
+static void
+envy24_dmapsetmap(void *arg, bus_dma_segment_t *segs, int nseg, int error)
+{
+	struct sc_info *sc = (struct sc_info *)arg;
+
+#if(0)
+	device_printf(sc->dev, "envy24_dmapsetmap()\n");
+#endif
+	if (bootverbose) {
+		printf("envy24(play): setmap %lx, %lx; ",
+		    (unsigned long)segs->ds_addr,
+		    (unsigned long)segs->ds_len);
+		printf("%p -> %lx\n", sc->pmap, (unsigned long)vtophys(sc->pmap));
+	}
+}
+
+static void
+envy24_dmarsetmap(void *arg, bus_dma_segment_t *segs, int nseg, int error)
+{
+	struct sc_info *sc = (struct sc_info *)arg;
+
+#if(0)
+	device_printf(sc->dev, "envy24_dmarsetmap()\n");
+#endif
+	if (bootverbose) {
+		printf("envy24(record): setmap %lx, %lx; ",
+		    (unsigned long)segs->ds_addr,
+		    (unsigned long)segs->ds_len);
+		printf("%p -> %lx\n", sc->rmap, (unsigned long)vtophys(sc->pmap));
+	}
+}
+
+static void
+envy24_dmafree(struct sc_info *sc)
+{
+#if(0)
+	device_printf(sc->dev, "envy24_dmafree():");
+	if (sc->rmap) printf(" sc->rmap(0x%08x)", (u_int32_t)sc->rmap);
+	else printf(" sc->rmap(null)");
+	if (sc->pmap) printf(" sc->pmap(0x%08x)", (u_int32_t)sc->pmap);
+	else printf(" sc->pmap(null)");
+	if (sc->rbuf) printf(" sc->rbuf(0x%08x)", (u_int32_t)sc->rbuf);
+	else printf(" sc->rbuf(null)");
+	if (sc->pbuf) printf(" sc->pbuf(0x%08x)\n", (u_int32_t)sc->pbuf);
+	else printf(" sc->pbuf(null)\n");
+#endif
+#if(0)
+	if (sc->rmap)
+		bus_dmamap_unload(sc->dmat, sc->rmap);
+	if (sc->pmap)
+		bus_dmamap_unload(sc->dmat, sc->pmap);
+	if (sc->rbuf)
+		bus_dmamem_free(sc->dmat, sc->rbuf, sc->rmap);
+	if (sc->pbuf)
+		bus_dmamem_free(sc->dmat, sc->pbuf, sc->pmap);
+#else
+	bus_dmamap_unload(sc->dmat, sc->rmap);
+	bus_dmamap_unload(sc->dmat, sc->pmap);
+	bus_dmamem_free(sc->dmat, sc->rbuf, sc->rmap);
+	bus_dmamem_free(sc->dmat, sc->pbuf, sc->pmap);
+#endif
+
+	sc->rmap = sc->pmap = NULL;
+	sc->pbuf = NULL;
+	sc->rbuf = NULL;
+
+	return;
+}
+
+static int
+envy24_dmainit(struct sc_info *sc)
+{
+	u_int32_t addr;
+
+#if(0)
+	device_printf(sc->dev, "envy24_dmainit()\n");
+#endif
+	/* init values */
+	sc->psize = ENVY24_PLAY_BUFUNIT * ENVY24_SAMPLE_NUM;
+	sc->rsize = ENVY24_REC_BUFUNIT * ENVY24_SAMPLE_NUM;
+	sc->pbuf = NULL;
+	sc->rbuf = NULL;
+	sc->pmap = sc->rmap = NULL;
+	sc->blk[0] = sc->blk[1] = 0;
+
+	/* allocate DMA buffer */
+#if(0)
+	device_printf(sc->dev, "envy24_dmainit(): bus_dmamem_alloc(): sc->pbuf\n");
+#endif
+	if (bus_dmamem_alloc(sc->dmat, (void **)&sc->pbuf, BUS_DMA_NOWAIT, &sc->pmap))
+		goto bad;
+#if(0)
+	device_printf(sc->dev, "envy24_dmainit(): bus_dmamem_alloc(): sc->rbuf\n");
+#endif
+	if (bus_dmamem_alloc(sc->dmat, (void **)&sc->rbuf, BUS_DMA_NOWAIT, &sc->rmap))
+		goto bad;
+#if(0)
+	device_printf(sc->dev, "envy24_dmainit(): bus_dmamem_load(): sc->pmap\n");
+#endif
+	if (bus_dmamap_load(sc->dmat, sc->pmap, sc->pbuf, sc->psize, envy24_dmapsetmap, sc, 0))
+		goto bad;
+#if(0)
+	device_printf(sc->dev, "envy24_dmainit(): bus_dmamem_load(): sc->rmap\n");
+#endif
+	if (bus_dmamap_load(sc->dmat, sc->rmap, sc->rbuf, sc->rsize, envy24_dmarsetmap, sc, 0))
+		goto bad;
+	bzero(sc->pbuf, sc->psize);
+	bzero(sc->rbuf, sc->rsize);
+
+	/* set values to register */
+	addr = vtophys(sc->pbuf);
+#if(0)
+	device_printf(sc->dev, "pbuf(0x%08x)\n", addr);
+#endif
+	envy24_wrmt(sc, ENVY24_MT_PADDR, addr, 4);
+#if(0)
+	device_printf(sc->dev, "PADDR-->(0x%08x)\n", envy24_rdmt(sc, ENVY24_MT_PADDR, 4));
+	device_printf(sc->dev, "psize(%ld)\n", sc->psize / 4 - 1);
+#endif
+	envy24_wrmt(sc, ENVY24_MT_PCNT, sc->psize / 4 - 1, 2);
+#if(0)
+	device_printf(sc->dev, "PCNT-->(%ld)\n", envy24_rdmt(sc, ENVY24_MT_PCNT, 2));
+#endif
+	addr = vtophys(sc->rbuf);
+	envy24_wrmt(sc, ENVY24_MT_RADDR, addr, 4);
+	envy24_wrmt(sc, ENVY24_MT_RCNT, sc->rsize / 4 - 1, 2);
+
+	return 0;
+ bad:
+	envy24_dmafree(sc);
+	return ENOSPC;
+}
+
+static void
+envy24_putcfg(struct sc_info *sc)
+{
+	device_printf(sc->dev, "system configuration\n", sc->adcn, sc->dacn);
+	printf("  SubVendorID: 0x%04x, SubDeviceID: 0x%04x\n",
+	    sc->cfg->subvendor, sc->cfg->subdevice);
+	printf("  XIN2 Clock Source: ");
+	switch (sc->cfg->scfg & PCIM_SCFG_XIN2) {
+	case 0x00:
+		printf("22.5792MHz(44.1kHz*512)\n");
+		break;
+	case 0x40:
+		printf("16.9344MHz(44.1kHz*384)\n");
+		break;
+	case 0x80:
+		printf("from external clock synthesizer chip\n");
+		break;
+	default:
+		printf("illeagal system setting\n");
+	}
+	printf("  MPU-401 UART(s) #: ");
+	if (sc->cfg->scfg & PCIM_SCFG_MPU)
+		printf("2\n");
+	else
+		printf("1\n");
+	printf("  AC'97 codec: ");
+	if (sc->cfg->scfg & PCIM_SCFG_AC97)
+		printf("not exist\n");
+	else
+		printf("exist\n");
+	printf("  ADC #: ");
+	printf("%d\n", sc->adcn);
+	printf("  DAC #: ");
+	printf("%d\n", sc->dacn);
+	printf("  Multi-track converter type: ");
+	if ((sc->cfg->acl & PCIM_ACL_MTC) == 0) {
+		printf("AC'97(SDATA_OUT:");
+		if (sc->cfg->acl & PCIM_ACL_OMODE)
+			printf("packed");
+		else
+			printf("split");
+		printf("|SDATA_IN:");
+		if (sc->cfg->acl & PCIM_ACL_IMODE)
+			printf("packed");
+		else
+			printf("split");
+		printf(")\n");
+	}
+	else {
+		printf("I2S(");
+		if (sc->cfg->i2s & PCIM_I2S_VOL)
+			printf("with volume, ");
+		if (sc->cfg->i2s & PCIM_I2S_96KHZ)
+			printf("96KHz support, ");
+		switch (sc->cfg->i2s & PCIM_I2S_RES) {
+		case PCIM_I2S_16BIT:
+			printf("16bit resolution, ");
+			break;
+		case PCIM_I2S_18BIT:
+			printf("18bit resolution, ");
+			break;
+		case PCIM_I2S_20BIT:
+			printf("20bit resolution, ");
+			break;
+		case PCIM_I2S_24BIT:
+			printf("24bit resolution, ");
+			break;
+		}
+		printf("ID#0x%x)\n", sc->cfg->i2s & PCIM_I2S_ID);
+	}
+	printf("  S/PDIF(IN/OUT): ");
+	if (sc->cfg->spdif & PCIM_SPDIF_IN)
+		printf("1/");
+	else
+		printf("0/");
+	if (sc->cfg->spdif & PCIM_SPDIF_OUT)
+		printf("1 ");
+	else
+		printf("0 ");
+	if (sc->cfg->spdif & (PCIM_SPDIF_IN | PCIM_SPDIF_OUT))
+		printf("ID# 0x%02x\n", (sc->cfg->spdif & PCIM_SPDIF_ID) >> 2);
+	printf("  GPIO(mask/dir/state): 0x%02x/0x%02x/0x%02x\n",
+	    sc->cfg->gpiomask, sc->cfg->gpiodir, sc->cfg->gpiostate);
+}
+
+static int
+envy24_init(struct sc_info *sc)
+{
+	u_int32_t data;
+#if(0)
+	int rtn;
+#endif
+	int i;
+	u_int32_t sv, sd;
+
+
+#if(0)
+	device_printf(sc->dev, "envy24_init()\n");
+#endif
+
+	/* reset chip */
+	envy24_wrcs(sc, ENVY24_CCS_CTL, ENVY24_CCS_CTL_RESET | ENVY24_CCS_CTL_NATIVE, 1);
+	DELAY(200);
+	envy24_wrcs(sc, ENVY24_CCS_CTL, ENVY24_CCS_CTL_NATIVE, 1);
+	DELAY(200);
+
+	/* legacy hardware disable */
+	data = pci_read_config(sc->dev, PCIR_LAC, 2);
+	data |= PCIM_LAC_DISABLE;
+	pci_write_config(sc->dev, PCIR_LAC, data, 2);
+
+	/* check system configuration */
+	sc->cfg = NULL;
+	for (i = 0; cfg_table[i].subvendor != 0 || cfg_table[i].subdevice != 0; i++) {
+		/* 1st: search configuration from table */
+		sv = pci_get_subvendor(sc->dev);
+		sd = pci_get_subdevice(sc->dev);
+		if (sv == cfg_table[i].subvendor && sd == cfg_table[i].subdevice) {
+#if(0)
+			device_printf(sc->dev, "Set configuration from table\n");
+#endif
+			sc->cfg = &cfg_table[i];
+			break;
+		}
+	}
+	if (sc->cfg == NULL) {
+		/* 2nd: read configuration from table */
+		sc->cfg = envy24_rom2cfg(sc);
+	}
+	sc->adcn = ((sc->cfg->scfg & PCIM_SCFG_ADC) >> 2) + 1;
+	sc->dacn = (sc->cfg->scfg & PCIM_SCFG_DAC) + 1;
+
+	if (1 /* bootverbose */) {
+		envy24_putcfg(sc);
+	}
+
+	/* set system configuration */
+	pci_write_config(sc->dev, PCIR_SCFG, sc->cfg->scfg, 1);
+	pci_write_config(sc->dev, PCIR_ACL, sc->cfg->acl, 1);
+	pci_write_config(sc->dev, PCIR_I2S, sc->cfg->i2s, 1);
+	pci_write_config(sc->dev, PCIR_SPDIF, sc->cfg->spdif, 1);
+	envy24_gpiosetmask(sc, sc->cfg->gpiomask);
+	envy24_gpiosetdir(sc, sc->cfg->gpiodir);
+	envy24_gpiowr(sc, sc->cfg->gpiostate);
+	for (i = 0; i < sc->adcn; i++) {
+		sc->adc[i] = sc->cfg->codec->create(sc->dev, sc, PCMDIR_REC, i);
+		sc->cfg->codec->init(sc->adc[i]);
+	}
+	for (i = 0; i < sc->dacn; i++) {
+		sc->dac[i] = sc->cfg->codec->create(sc->dev, sc, PCMDIR_PLAY, i);
+		sc->cfg->codec->init(sc->dac[i]);
+	}
+
+	/* initialize DMA buffer */
+#if(0)
+	device_printf(sc->dev, "envy24_init(): initialize DMA buffer\n");
+#endif
+	if (envy24_dmainit(sc))
+		return ENOSPC;
+
+	/* initialize status */
+	sc->run[0] = sc->run[1] = 0;
+	sc->intr[0] = sc->intr[1] = 0;
+	sc->speed = 0;
+	sc->caps[0].fmtlist = envy24_playfmt;
+	sc->caps[1].fmtlist = envy24_recfmt;
+
+	/* set channel router */
+	envy24_route(sc, ENVY24_ROUTE_DAC_1, ENVY24_ROUTE_CLASS_MIX, 0, 0);
+	envy24_route(sc, ENVY24_ROUTE_DAC_SPDIF, ENVY24_ROUTE_CLASS_DMA, 0, 0);
+	/* envy24_route(sc, ENVY24_ROUTE_DAC_SPDIF, ENVY24_ROUTE_CLASS_MIX, 0, 0); */
+
+	/* set macro interrupt mask */
+	data = envy24_rdcs(sc, ENVY24_CCS_IMASK, 1);
+	envy24_wrcs(sc, ENVY24_CCS_IMASK, data & ~ENVY24_CCS_IMASK_PMT, 1);
+	data = envy24_rdcs(sc, ENVY24_CCS_IMASK, 1);
+#if(0)
+	device_printf(sc->dev, "envy24_init(): CCS_IMASK-->0x%02x\n", data);
+#endif
+
+	return 0;
+}
+
+static int
+envy24_alloc_resource(struct sc_info *sc)
+{
+	/* allocate I/O port resource */
+	sc->csid = PCIR_CCS;
+	sc->cs = bus_alloc_resource(sc->dev, SYS_RES_IOPORT,
+	    &sc->csid, 0, ~0, 1, RF_ACTIVE);
+	sc->ddmaid = PCIR_DDMA;
+	sc->ddma = bus_alloc_resource(sc->dev, SYS_RES_IOPORT,
+	    &sc->ddmaid, 0, ~0, 1, RF_ACTIVE);
+	sc->dsid = PCIR_DS;
+	sc->ds = bus_alloc_resource(sc->dev, SYS_RES_IOPORT,
+	    &sc->dsid, 0, ~0, 1, RF_ACTIVE);
+	sc->mtid = PCIR_MT;
+	sc->mt = bus_alloc_resource(sc->dev, SYS_RES_IOPORT,
+	    &sc->mtid, 0, ~0, 1, RF_ACTIVE);
+	if (!sc->cs || !sc->ddma || !sc->ds || !sc->mt) {
+		device_printf(sc->dev, "unable to map IO port space\n");
+		return ENXIO;
+	}
+	sc->cst = rman_get_bustag(sc->cs);
+	sc->csh = rman_get_bushandle(sc->cs);
+	sc->ddmat = rman_get_bustag(sc->ddma);
+	sc->ddmah = rman_get_bushandle(sc->ddma);
+	sc->dst = rman_get_bustag(sc->ds);
+	sc->dsh = rman_get_bushandle(sc->ds);
+	sc->mtt = rman_get_bustag(sc->mt);
+	sc->mth = rman_get_bushandle(sc->mt);
+#if(0)
+	device_printf(sc->dev,
+	    "IO port register values\nCCS: 0x%lx\nDDMA: 0x%lx\nDS: 0x%lx\nMT: 0x%lx\n",
+	    pci_read_config(sc->dev, PCIR_CCS, 4),
+	    pci_read_config(sc->dev, PCIR_DDMA, 4),
+	    pci_read_config(sc->dev, PCIR_DS, 4),
+	    pci_read_config(sc->dev, PCIR_MT, 4));
+#endif
+
+	/* allocate interupt resource */
+	sc->irqid = 0;
+	sc->irq = bus_alloc_resource(sc->dev, SYS_RES_IRQ, &sc->irqid,
+				 0, ~0, 1, RF_ACTIVE | RF_SHAREABLE);
+	if (!sc->irq ||
+	    snd_setup_intr(sc->dev, sc->irq, INTR_MPSAFE, envy24_intr, sc, &sc->ih)) {
+		device_printf(sc->dev, "unable to map interrupt\n");
+		return ENXIO;
+	}
+
+	/* allocate DMA resource */
+	if (bus_dma_tag_create(/*parent*/NULL, /*alignment*/4, /*boundary*/0,
+	    /*lowaddr*/BUS_SPACE_MAXADDR_ENVY24,
+	    /*highaddr*/BUS_SPACE_MAXADDR_ENVY24,
+	    /*filter*/NULL, /*filterarg*/NULL,
+	    /*maxsize*/BUS_SPACE_MAXSIZE_ENVY24,
+	    /*nsegments*/1, /*maxsegsz*/0x3ffff,
+	    /*flags*/0, &sc->dmat) != 0) {
+		device_printf(sc->dev, "unable to create dma tag\n");
+		return ENXIO;
+	}
+
+	return 0;
+}
+
+static int
+envy24_pci_attach(device_t dev)
+{
+	u_int32_t		data;
+	struct sc_info 		*sc;
+	char 			status[SND_STATUSLEN];
+	char			name[ENVY24_NAMELEN];
+	int			err = 0;
+	int			i;
+
+#if(0)
+	device_printf(dev, "envy24_pci_attach()\n");
+#endif
+	/* get sc_info data area */
+	if ((sc = malloc(sizeof(*sc), M_ENVY24, M_NOWAIT)) == NULL) {
+		device_printf(dev, "cannot allocate softc\n");
+		return ENXIO;
+	}
+
+	bzero(sc, sizeof(*sc));
+	snprintf(name, ENVY24_NAMELEN, "%s:envy24", device_get_nameunit(dev));
+	sc->lock = snd_mtxcreate(name);
+	sc->dev = dev;
+
+	/* initialize PCI interface */
+	data = pci_read_config(dev, PCIR_COMMAND, 2);
+	data |= (PCIM_CMD_PORTEN | PCIM_CMD_BUSMASTEREN);
+	pci_write_config(dev, PCIR_COMMAND, data, 2);
+	data = pci_read_config(dev, PCIR_COMMAND, 2);
+
+	/* allocate resources */
+	if (err = envy24_alloc_resource(sc)) {
+		device_printf(dev, "unable to allocate system resources\n");
+		goto bad;
+	}
+
+	/* initialize card */
+	if (err = envy24_init(sc)) {
+		device_printf(dev, "unable to initialize the card\n");
+		goto bad;
+	}
+
+	/* set multi track mixer */
+	mixer_init(dev, &envy24mixer_class, sc);
+
+	/* set channel information */
+	if (err = pcm_register(dev, sc, 5, 2 + sc->adc))
+		goto bad;
+	sc->chnum = 0;
+	for (i = 0; i < 5; i++) {
+		pcm_addchan(dev, PCMDIR_PLAY, &envy24chan_class, sc);
+		sc->chnum++;
+	}
+	for (i = 0; i < 2 + sc->adcn; i++) {
+		pcm_addchan(dev, PCMDIR_REC, &envy24chan_class, sc);
+		sc->chnum++;
+	}
+
+	/* set status iformation */
+	snprintf(status, SND_STATUSLEN,
+	    "at io 0x%lx:%ld,0x%lx:%ld,0x%lx:%ld,0x%lx:%ld irq %ld",
+	    rman_get_start(sc->cs),
+	    rman_get_end(sc->cs) - rman_get_start(sc->cs) + 1,
+	    rman_get_start(sc->ddma),
+	    rman_get_end(sc->ddma) - rman_get_start(sc->ddma) + 1,
+	    rman_get_start(sc->ds),
+	    rman_get_end(sc->ds) - rman_get_start(sc->ds) + 1,
+	    rman_get_start(sc->mt),
+	    rman_get_end(sc->mt) - rman_get_start(sc->mt) + 1,
+	    rman_get_start(sc->irq));
+	pcm_setstatus(dev, status);
+
+	return 0;
+
+bad:
+	if (sc->ih)
+		bus_teardown_intr(dev, sc->irq, sc->ih);
+	if (sc->irq)
+		bus_release_resource(dev, SYS_RES_IRQ, sc->irqid, sc->irq);
+	envy24_dmafree(sc);
+	if (sc->dmat)
+		bus_dma_tag_destroy(sc->dmat);
+	envy24_cfgfree(sc->cfg);
+	if (sc->cs)
+		bus_release_resource(dev, SYS_RES_IOPORT, sc->csid, sc->cs);
+	if (sc->ddma)
+		bus_release_resource(dev, SYS_RES_IOPORT, sc->ddmaid, sc->ddma);
+	if (sc->ds)
+		bus_release_resource(dev, SYS_RES_IOPORT, sc->dsid, sc->ds);
+	if (sc->mt)
+		bus_release_resource(dev, SYS_RES_IOPORT, sc->mtid, sc->mt);
+	if (sc->lock)
+		snd_mtxfree(sc->lock);
+	free(sc, M_ENVY24);
+	return err;
+}
+
+static int
+envy24_pci_detach(device_t dev)
+{
+	struct sc_info *sc;
+	int r;
+	int i;
+
+#if(0)
+	device_printf(dev, "envy24_pci_detach()\n");
+#endif
+	sc = pcm_getdevinfo(dev);
+	if (sc == NULL)
+		return 0;
+	r = pcm_unregister(dev);
+	if (r)
+		return r;
+
+	envy24_dmafree(sc);
+	if (sc->cfg->codec->destroy != NULL) {
+		for (i = 0; i < sc->adcn; i++)
+			sc->cfg->codec->destroy(sc->adc[i]);
+		for (i = 0; i < sc->dacn; i++)
+			sc->cfg->codec->destroy(sc->dac[i]);
+	}
+	envy24_cfgfree(sc->cfg);
+	bus_dma_tag_destroy(sc->dmat);
+	bus_teardown_intr(dev, sc->irq, sc->ih);
+	bus_release_resource(dev, SYS_RES_IRQ, sc->irqid, sc->irq);
+	bus_release_resource(dev, SYS_RES_IOPORT, sc->csid, sc->cs);
+	bus_release_resource(dev, SYS_RES_IOPORT, sc->ddmaid, sc->ddma);
+	bus_release_resource(dev, SYS_RES_IOPORT, sc->dsid, sc->ds);
+	bus_release_resource(dev, SYS_RES_IOPORT, sc->mtid, sc->mt);
+	snd_mtxfree(sc->lock);
+	free(sc, M_ENVY24);
+	return 0;
+}
+
+static device_method_t envy24_methods[] = {
+	/* Device interface */
+	DEVMETHOD(device_probe,		envy24_pci_probe),
+	DEVMETHOD(device_attach,	envy24_pci_attach),
+	DEVMETHOD(device_detach,	envy24_pci_detach),
+	{ 0, 0 }
+};
+
+static driver_t envy24_driver = {
+	"pcm",
+	envy24_methods,
+#if __FreeBSD_version > 500000
+	PCM_SOFTC_SIZE,
+#else
+	sizeof(struct snddev_info),
+#endif
+};
+
+DRIVER_MODULE(snd_envy24, pci, envy24_driver, pcm_devclass, 0, 0);
+MODULE_DEPEND(snd_envy24, snd_pcm, PCM_MINVER, PCM_PREFVER, PCM_MAXVER);
+MODULE_DEPEND(snd_envy24, snd_ak452x, PCM_MINVER, PCM_PREFVER, PCM_MAXVER);
+MODULE_VERSION(snd_envy24, 1);