ati ixp audio; ported form ntbsd in <4h of boretime; testing by krw@ and ian@

6 files changed, 2164 insertions, 3 deletions

diff --git a/sys/arch/amd64/conf/GENERIC b/sys/arch/amd64/conf/GENERIC
index 7c06bb57c74..700e2b260a8 100644
--- a/sys/arch/amd64/conf/GENERIC
+++ b/sys/arch/amd64/conf/GENERIC
@@ -1,4 +1,4 @@
-#	$OpenBSD: GENERIC,v 1.78 2005/08/03 22:42:45 brad Exp $
+#	$OpenBSD: GENERIC,v 1.79 2005/08/07 20:08:45 mickey Exp $
 #
 # For further information on compiling OpenBSD kernels, see the config(8)
 # man page.
@@ -348,6 +348,7 @@ eap*	at pci?				# Ensoniq AudioPCI S5016
 #neo*	at pci?				# NeoMagic 256AV/ZX
 #cmpci*	at pci?				# C-Media CMI8338/8738
 auich*	at pci? flags 0x0000		# i82801 ICH AC'97 audio
+auixp*	at pci?				# ATI IXP AC'97 Audio
 #autri*	at pci? flags 0x0000		# Trident 4D WAVE
 auvia*	at pci?				# VIA VT82C686A
 #clcs*	at pci?				# CS4280 CrystalClear audio
@@ -379,6 +380,7 @@ audio*	at eap?
 #audio*	at clcs?
 #audio*	at clct?
 audio*	at auich?
+audio*	at auixp?
 #audio*	at autri?
 audio*	at auvia?
 #audio*	at fms?
diff --git a/sys/arch/i386/conf/GENERIC b/sys/arch/i386/conf/GENERIC
index e97dbf91017..44625c9c9e4 100644
--- a/sys/arch/i386/conf/GENERIC
+++ b/sys/arch/i386/conf/GENERIC
@@ -1,4 +1,4 @@
-#	$OpenBSD: GENERIC,v 1.427 2005/08/05 04:10:32 jsg Exp $
+#	$OpenBSD: GENERIC,v 1.428 2005/08/07 20:08:45 mickey Exp $
 #
 # For further information on compiling OpenBSD kernels, see the config(8)
 # man page.
@@ -493,6 +493,7 @@ sv*	at pci?				# S3 SonicVibes (S3 617)
 neo*	at pci?				# NeoMagic 256AV/ZX
 cmpci*	at pci?				# C-Media CMI8338/8738
 auich*	at pci? flags 0x0000		# i82801 ICH AC'97 audio
+auixp*	at pci?				# ATI IXP AC'97 Audio
 autri*	at pci? flags 0x0000		# Trident 4D WAVE
 auvia*	at pci?				# VIA VT82C686A
 clcs*	at pci?				# CS4280 CrystalClear audio
@@ -548,6 +549,7 @@ audio*	at cmpci?
 audio*	at clcs?
 audio*	at clct?
 audio*	at auich?
+audio*	at auixp?
 audio*	at autri?
 audio*	at auvia?
 audio*	at fms?
diff --git a/sys/dev/pci/auixp.c b/sys/dev/pci/auixp.c
new file mode 100644
index 00000000000..d0e3bc25a1d
--- /dev/null
+++ b/sys/dev/pci/auixp.c
@@ -0,0 +1,1850 @@
+/* $OpenBSD: auixp.c,v 1.1 2005/08/07 20:08:45 mickey Exp $ */
+/* $NetBSD: auixp.c,v 1.9 2005/06/27 21:13:09 thorpej Exp $ */
+
+/*
+ * Copyright (c) 2004, 2005 Reinoud Zandijk <reinoud@netbsd.org>
+ * 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. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the NetBSD
+ *	Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
+ */
+/*
+ * Audio driver for ATI IXP-{150,200,...} audio driver hardware.
+ *
+ * Recording and playback has been tested OK on various sample rates and
+ * encodings.
+ *
+ * Known problems and issues :
+ * - SPDIF is untested and needs some work still (LED stays off)
+ * - 32 bit audio playback failed last time i tried but that might an AC'97
+ *   codec support problem.
+ * - 32 bit recording works but can't try out playing: see above.
+ * - no suspend/resume support yet.
+ * - multiple codecs are `supported' but not tested; the implemetation needs
+ *   some cleaning up.
+ */
+
+/*#define DEBUG_AUIXP*/
+
+#include <sys/types.h>
+#include <sys/errno.h>
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/malloc.h>
+#include <sys/device.h>
+#include <sys/conf.h>
+#include <sys/exec.h>
+#include <sys/select.h>
+#include <sys/audioio.h>
+#include <sys/queue.h>
+
+#include <machine/bus.h>
+#include <machine/intr.h>
+
+#include <dev/pci/pcidevs.h>
+#include <dev/pci/pcivar.h>
+
+#include <dev/audio_if.h>
+#include <dev/mulaw.h>
+#include <dev/auconv.h>
+#include <dev/ic/ac97.h>
+
+#include <dev/pci/auixpreg.h>
+#include <dev/pci/auixpvar.h>
+
+/* codec detection constant indicating the interrupt flags */
+#define ALL_CODECS_NOT_READY \
+    (ATI_REG_ISR_CODEC0_NOT_READY | ATI_REG_ISR_CODEC1_NOT_READY |\
+     ATI_REG_ISR_CODEC2_NOT_READY)
+#define CODEC_CHECK_BITS (ALL_CODECS_NOT_READY|ATI_REG_ISR_NEW_FRAME)
+
+/* why isn't this base address register not in the headerfile? */
+#define PCI_CBIO 0x10
+
+/* macro's used */
+#define KERNADDR(p)	((void *)((p)->addr))
+#define	DMAADDR(p)	((p)->map->dm_segs[0].ds_addr)
+
+const struct pci_matchid auixp_pci_devices[] = {
+	{ PCI_VENDOR_ATI, PCI_PRODUCT_ATI_IXP_AUDIO_200 },
+	{ PCI_VENDOR_ATI, PCI_PRODUCT_ATI_IXP_AUDIO_300 },
+	{ PCI_VENDOR_ATI, PCI_PRODUCT_ATI_IXP_AUDIO_400 },
+};
+
+struct cfdriver auixp_cd = {
+	NULL, "auixp", DV_DULL
+};
+
+int	auixp_match( struct device *, void *, void *);
+void	auixp_attach(struct device *, struct device *, void *);
+int	auixp_detach(struct device *, int);
+
+struct cfattach auixp_ca = {
+	sizeof(struct auixp_softc), auixp_match, auixp_attach
+};
+
+int	auixp_open(void *v, int flags);
+void	auixp_close(void *v);
+int	auixp_query_encoding(void *, struct audio_encoding *);
+int	auixp_set_params(void *, int, int, struct audio_params *,
+    struct audio_params *);
+int	auixp_commit_settings(void *);
+int	auixp_round_blocksize(void *, int);
+int	auixp_trigger_output(void *, void *, void *, int,
+    void (*)(void *), void *, struct audio_params *);
+int	auixp_trigger_input(void *, void *, void *, int,
+    void (*)(void *), void *, struct audio_params *);
+int	auixp_halt_output(void *);
+int	auixp_halt_input(void *);
+int	auixp_set_port(void *, mixer_ctrl_t *);
+int	auixp_get_port(void *, mixer_ctrl_t *);
+int	auixp_query_devinfo(void *, mixer_devinfo_t *);
+void *	auixp_malloc(void *, int, size_t, int, int);
+void	auixp_free(void *, void *, int);
+int	auixp_getdev(void *, struct audio_device *);
+size_t	auixp_round_buffersize(void *, int, size_t);
+int	auixp_get_props(void *);
+int	auixp_intr(void *);
+int	auixp_allocmem(struct auixp_softc *, size_t, size_t,
+    struct auixp_dma *);
+int	auixp_freemem(struct auixp_softc *, struct auixp_dma *);
+paddr_t	auixp_mappage(void *, void *, off_t, int);
+
+
+/* power management (do we support that already?) */
+int	auixp_power(struct auixp_softc *, int);
+#if 0
+void	auixp_powerhook(int, void *);
+int	auixp_suspend(struct auixp_softc *);
+int	auixp_resume(struct auixp_softc *);
+#endif
+
+
+/* Supporting subroutines */
+int	auixp_init(struct auixp_softc *);
+void	auixp_autodetect_codecs(struct auixp_softc *);
+void	auixp_post_config(void *);
+
+void	auixp_reset_aclink(struct auixp_softc *);
+int	auixp_attach_codec(void *, struct ac97_codec_if *);
+int	auixp_read_codec(void *, u_int8_t, u_int16_t *);
+int	auixp_write_codec(void *, u_int8_t, u_int16_t);
+int	auixp_wait_for_codecs(struct auixp_softc *, const char *);
+void	auixp_reset_codec(void *);
+enum ac97_host_flags	auixp_flags_codec(void *);
+
+void	auixp_enable_dma(struct auixp_softc *, struct auixp_dma *);
+void	auixp_disable_dma(struct auixp_softc *, struct auixp_dma *);
+void	auixp_enable_interrupts(struct auixp_softc *);
+void	auixp_disable_interrupts(struct auixp_softc *);
+
+void	auixp_link_daisychain(struct auixp_softc *,
+    struct auixp_dma *, struct auixp_dma *, int, int);
+int	auixp_allocate_dma_chain(struct auixp_softc *, struct auixp_dma **);
+void	auixp_program_dma_chain(struct auixp_softc *, struct auixp_dma *);
+void	auixp_dma_update(struct auixp_softc *, struct auixp_dma *);
+void	auixp_update_busbusy(struct auixp_softc *);
+
+#ifdef DEBUG_AUIXP
+#define DPRINTF(x)	printf x;
+#else
+#define DPRINTF(x)
+#endif
+
+struct audio_hw_if auixp_hw_if = {
+	auixp_open,
+	auixp_close,
+	NULL,			/* drain */
+	auixp_query_encoding,
+	auixp_set_params,
+	auixp_round_blocksize,
+	auixp_commit_settings,
+	NULL,			/* init_output  */
+	NULL,			/* init_input   */
+	NULL,			/* start_output */
+	NULL,			/* start_input  */
+	auixp_halt_output,
+	auixp_halt_input,
+	NULL,			/* speaker_ctl */
+	auixp_getdev,
+	NULL,			/* getfd */
+	auixp_set_port,
+	auixp_get_port,
+	auixp_query_devinfo,
+	auixp_malloc,
+	auixp_free,
+	auixp_round_buffersize,
+	auixp_mappage,
+	auixp_get_props,
+	auixp_trigger_output,
+	auixp_trigger_input
+};
+
+int
+auixp_open(void *v, int flags)
+{
+
+	return 0;
+}
+
+void
+auixp_close(void *v)
+{
+}
+
+int
+auixp_query_encoding(void *hdl, struct audio_encoding *aep)
+{
+	switch (aep->index) {
+	case 0:
+		strlcpy(aep->name, AudioEulinear, sizeof aep->name);
+		aep->encoding = AUDIO_ENCODING_ULINEAR;
+		aep->precision = 8;
+		aep->flags = AUDIO_ENCODINGFLAG_EMULATED;
+		return (0);
+	case 1:
+		strlcpy(aep->name, AudioEmulaw, sizeof aep->name);
+		aep->encoding = AUDIO_ENCODING_ULAW;
+		aep->precision = 8;
+		aep->flags = AUDIO_ENCODINGFLAG_EMULATED;
+		return (0);
+	case 2:
+		strlcpy(aep->name, AudioEalaw, sizeof aep->name);
+		aep->encoding = AUDIO_ENCODING_ALAW;
+		aep->precision = 8;
+		aep->flags = AUDIO_ENCODINGFLAG_EMULATED;
+		return (0);
+	case 3:
+		strlcpy(aep->name, AudioEslinear, sizeof aep->name);
+		aep->encoding = AUDIO_ENCODING_SLINEAR;
+		aep->precision = 8;
+		aep->flags = AUDIO_ENCODINGFLAG_EMULATED;
+		return (0);
+	case 4:
+		strlcpy(aep->name, AudioEslinear_le, sizeof aep->name);
+		aep->encoding = AUDIO_ENCODING_SLINEAR_LE;
+		aep->precision = 16;
+		aep->flags = 0;
+		return (0);
+	case 5:
+		strlcpy(aep->name, AudioEulinear_le, sizeof aep->name);
+		aep->encoding = AUDIO_ENCODING_ULINEAR_LE;
+		aep->precision = 16;
+		aep->flags = AUDIO_ENCODINGFLAG_EMULATED;
+		return (0);
+	case 6:
+		strlcpy(aep->name, AudioEslinear_be, sizeof aep->name);
+		aep->encoding = AUDIO_ENCODING_SLINEAR_BE;
+		aep->precision = 16;
+		aep->flags = AUDIO_ENCODINGFLAG_EMULATED;
+		return (0);
+	case 7:
+		strlcpy(aep->name, AudioEulinear_be, sizeof aep->name);
+		aep->encoding = AUDIO_ENCODING_ULINEAR_BE;
+		aep->precision = 16;
+		aep->flags = AUDIO_ENCODINGFLAG_EMULATED;
+		return (0);
+	default:
+		return (EINVAL);
+	}
+}
+
+
+/* commit setting and program ATI IXP chip */
+int
+auixp_commit_settings(void *hdl)
+{
+	struct auixp_codec *co;
+	struct auixp_softc *sc;
+	bus_space_tag_t    iot;
+	bus_space_handle_t ioh;
+	struct audio_params *params;
+	u_int32_t value;
+
+	/* XXX would it be better to stop interrupts first? XXX */
+	co = (struct auixp_codec *) hdl;
+	sc = co->sc;
+	iot = sc->sc_iot;
+	ioh = sc->sc_ioh;
+
+	/* process input settings */
+	params = &sc->sc_play_params;
+
+	/* set input interleaving (precision) */
+	value  =  bus_space_read_4(iot, ioh, ATI_REG_CMD);
+	value &= ~ATI_REG_CMD_INTERLEAVE_IN;
+	if (params->precision <= 16)
+		value |= ATI_REG_CMD_INTERLEAVE_IN;
+	bus_space_write_4(iot, ioh, ATI_REG_CMD, value);
+
+	/* process output settings */
+	params = &sc->sc_play_params;
+
+	value  =  bus_space_read_4(iot, ioh, ATI_REG_OUT_DMA_SLOT);
+	value &= ~ATI_REG_OUT_DMA_SLOT_MASK;
+
+	/* TODO SPDIF case for 8 channels */
+	switch (params->channels) {
+	case 6:
+		value |= ATI_REG_OUT_DMA_SLOT_BIT(7) |
+			 ATI_REG_OUT_DMA_SLOT_BIT(8);
+		/* fallthru */
+	case 4:
+		value |= ATI_REG_OUT_DMA_SLOT_BIT(6) |
+			 ATI_REG_OUT_DMA_SLOT_BIT(9);
+		/* fallthru */
+	default:
+		value |= ATI_REG_OUT_DMA_SLOT_BIT(3) |
+			 ATI_REG_OUT_DMA_SLOT_BIT(4);
+		break;
+	}
+	/* set output threshold */
+	value |= 0x04 << ATI_REG_OUT_DMA_THRESHOLD_SHIFT;
+	bus_space_write_4(iot, ioh, ATI_REG_OUT_DMA_SLOT, value);
+
+	/* set output interleaving (precision) */
+	value  =  bus_space_read_4(iot, ioh, ATI_REG_CMD);
+	value &= ~ATI_REG_CMD_INTERLEAVE_OUT;
+	if (params->precision <= 16)
+		value |= ATI_REG_CMD_INTERLEAVE_OUT;
+	bus_space_write_4(iot, ioh, ATI_REG_CMD, value);
+
+	/* enable 6 channel reordering */
+	value  =  bus_space_read_4(iot, ioh, ATI_REG_6CH_REORDER);
+	value &= ~ATI_REG_6CH_REORDER_EN;
+	if (params->channels == 6)
+		value |= ATI_REG_6CH_REORDER_EN;
+	bus_space_write_4(iot, ioh, ATI_REG_6CH_REORDER, value);
+
+	if (sc->has_spdif) {
+		/* set SPDIF (if present) */
+		value  =  bus_space_read_4(iot, ioh, ATI_REG_CMD);
+		value &= ~ATI_REG_CMD_SPDF_CONFIG_MASK;
+		value |=  ATI_REG_CMD_SPDF_CONFIG_34; /* NetBSD AC'97 default */
+
+		/* XXX this prolly is not nessisary unless splitted XXX */
+		value &= ~ATI_REG_CMD_INTERLEAVE_SPDF;
+		if (params->precision <= 16)
+			value |= ATI_REG_CMD_INTERLEAVE_SPDF;
+		bus_space_write_4(iot, ioh, ATI_REG_CMD, value);
+	}
+
+	return 0;
+}
+
+
+/* set audio properties in desired setting */
+int
+auixp_set_params(void *hdl, int setmode, int usemode,
+    struct audio_params *play, struct audio_params *rec)
+{
+	struct auixp_codec *co;
+	struct auixp_softc *sc;
+	int error;
+
+	co = (struct auixp_codec *) hdl;
+	sc = co->sc;
+	if (setmode & AUMODE_PLAY) {
+		play->factor = 1;
+		play->sw_code = NULL;
+		switch(play->encoding) {
+		case AUDIO_ENCODING_ULAW:
+			switch (play->channels) {
+			case 1:
+				play->factor = 4;
+				play->sw_code = mulaw_to_slinear16_mts;
+				break;
+			case 2:
+				play->factor = 2;
+				play->sw_code = mulaw_to_slinear16;
+				break;
+			default:
+				return (EINVAL);
+			}
+			break;
+		case AUDIO_ENCODING_SLINEAR_LE:
+			switch (play->precision) {
+			case 8:
+				switch (play->channels) {
+				case 1:
+					play->factor = 4;
+					play->sw_code = linear8_to_linear16_mts;
+					break;
+				case 2:
+					play->factor = 2;
+					play->sw_code = linear8_to_linear16;
+					break;
+				default:
+					return (EINVAL);
+				}
+				break;
+			case 16:
+				switch (play->channels) {
+				case 1:
+					play->factor = 2;
+					play->sw_code = noswap_bytes_mts;
+					break;
+				case 2:
+					break;
+				default:
+					return (EINVAL);
+				}
+				break;
+			default:
+				return (EINVAL);
+			}
+			break;
+		case AUDIO_ENCODING_ULINEAR_LE:
+			switch (play->precision) {
+			case 8:
+				switch (play->channels) {
+				case 1:
+					play->factor = 4;
+					play->sw_code = ulinear8_to_linear16_mts;
+					break;
+				case 2:
+					play->factor = 2;
+					play->sw_code = ulinear8_to_linear16;
+					break;
+				default:
+					return (EINVAL);
+				}
+				break;
+			case 16:
+				switch (play->channels) {
+				case 1:
+					play->factor = 2;
+					play->sw_code = change_sign16_mts;
+					break;
+				case 2:
+					play->sw_code = change_sign16;
+					break;
+				default:
+					return (EINVAL);
+				}
+				break;
+			default:
+				return (EINVAL);
+			}
+			break;
+		case AUDIO_ENCODING_ALAW:
+			switch (play->channels) {
+			case 1:
+				play->factor = 4;
+				play->sw_code = alaw_to_slinear16_mts;
+			case 2:
+				play->factor = 2;
+				play->sw_code = alaw_to_slinear16;
+			default:
+				return (EINVAL);
+			}
+			break;
+		case AUDIO_ENCODING_SLINEAR_BE:
+			switch (play->precision) {
+			case 8:
+				switch (play->channels) {
+				case 1:
+					play->factor = 4;
+					play->sw_code = linear8_to_linear16_mts;
+					break;
+				case 2:
+					play->factor = 2;
+					play->sw_code = linear8_to_linear16;
+					break;
+				default:
+					return (EINVAL);
+				}
+				break;
+			case 16:
+				switch (play->channels) {
+				case 1:
+					play->factor = 2;
+					play->sw_code = swap_bytes_mts;
+					break;
+				case 2:
+					play->sw_code = swap_bytes;
+					break;
+				default:
+					return (EINVAL);
+				}
+				break;
+			default:
+				return (EINVAL);
+			}
+			break;
+		case AUDIO_ENCODING_ULINEAR_BE:
+			switch (play->precision) {
+			case 8:
+				switch (play->channels) {
+				case 1:
+					play->factor = 4;
+					play->sw_code = ulinear8_to_linear16_mts;
+					break;
+				case 2:
+					play->factor = 2;
+					play->sw_code = ulinear8_to_linear16;
+					break;
+				default:
+					return (EINVAL);
+				}
+				break;
+			case 16:
+				switch (play->channels) {
+				case 1:
+					play->factor = 2;
+					play->sw_code = change_sign16_swap_bytes_mts;
+					break;
+				case 2:
+					play->sw_code = change_sign16_swap_bytes;
+					break;
+				default:
+					return (EINVAL);
+				}
+				break;
+			default:
+				return (EINVAL);
+			}
+			break;
+		default:
+			return (EINVAL);
+		}
+
+		error = ac97_set_rate(co->codec_if, play, AUMODE_PLAY);
+		if (error)
+			return (error);
+	}
+
+	if (setmode & AUMODE_RECORD) {
+		rec->factor = 1;
+		rec->sw_code = 0;
+		switch(rec->encoding) {
+		case AUDIO_ENCODING_ULAW:
+			rec->sw_code = ulinear8_to_mulaw;
+			break;
+		case AUDIO_ENCODING_SLINEAR_LE:
+			if (rec->precision == 8)
+				rec->sw_code = change_sign8;
+			break;
+		case AUDIO_ENCODING_ULINEAR_LE:
+			if (rec->precision == 16)
+				rec->sw_code = change_sign16;
+			break;
+		case AUDIO_ENCODING_ALAW:
+			rec->sw_code = ulinear8_to_alaw;
+			break;
+		case AUDIO_ENCODING_SLINEAR_BE:
+			if (rec->precision == 16)
+				rec->sw_code = swap_bytes;
+			else
+				rec->sw_code = change_sign8;
+			break;
+		case AUDIO_ENCODING_ULINEAR_BE:
+			if (rec->precision == 16)
+				rec->sw_code = swap_bytes_change_sign16;
+			break;
+		default:
+			return (EINVAL);
+		}
+
+		error = ac97_set_rate(co->codec_if, rec, AUMODE_RECORD);
+		if (error)
+			return (error);
+	}
+
+	return (0);
+}
+
+
+/* called to translate a requested blocksize to a hw-possible one */
+int
+auixp_round_blocksize(void *v, int blk)
+{
+
+	blk = (blk + 0x1f) & ~0x1f;
+	/* Be conservative; align to 32 bytes and maximise it to 64 kb */
+	if (blk > 0x10000)
+		blk = 0x10000;
+
+	return blk;
+}
+
+
+/*
+ * allocate dma capable memory and record its information for later retrieval
+ * when we program the dma chain itself. The trigger routines passes on the
+ * kernel virtual address we return here as a reference to the mapping.
+ */
+void *
+auixp_malloc(void *hdl, int direction, size_t size, int pool, int flags)
+{
+	struct auixp_codec *co;
+	struct auixp_softc *sc;
+	struct auixp_dma *dma;
+	int error;
+
+	co = (struct auixp_codec *) hdl;
+	sc = co->sc;
+	/* get us a auixp_dma structure */
+	dma = malloc(sizeof(*dma), pool, flags);
+	if (!dma)
+		return NULL;
+
+	/* get us a dma buffer itself */
+	error = auixp_allocmem(sc, size, 16, dma);
+	if (error) {
+		free(dma, pool);
+		printf("%s: auixp_malloc: not enough memory\n",
+		    sc->sc_dev.dv_xname);
+		return NULL;
+	}
+	SLIST_INSERT_HEAD(&sc->sc_dma_list, dma, dma_chain);
+
+	DPRINTF(("auixp_malloc: returning kern %p,   hw 0x%08x for %d bytes "
+	    "in %d segs\n", KERNADDR(dma), (u_int32_t) DMAADDR(dma), dma->size,
+	    dma->nsegs)
+	);
+
+	return KERNADDR(dma);
+}
+
+/*
+ * free and release dma capable memory we allocated before and remove its
+ * recording
+ */
+void
+auixp_free(void *hdl, void *addr, int pool)
+{
+	struct auixp_codec *co;
+	struct auixp_softc *sc;
+	struct auixp_dma *dma;
+
+	co = (struct auixp_codec *) hdl;
+	sc = co->sc;
+	SLIST_FOREACH(dma, &sc->sc_dma_list, dma_chain) {
+		if (KERNADDR(dma) == addr) {
+			SLIST_REMOVE(&sc->sc_dma_list, dma, auixp_dma,
+			    dma_chain);
+			auixp_freemem(sc, dma);
+			free(dma, pool);
+			return;
+		}
+	}
+}
+
+int
+auixp_getdev(void *v, struct audio_device *adp)
+{
+	struct auixp_softc *sc = v;
+	*adp = sc->sc_audev;
+	return 0;
+}
+
+/* pass request to AC'97 codec code */
+int
+auixp_set_port(void *hdl, mixer_ctrl_t *mc)
+{
+	struct auixp_codec *co;
+
+	co = (struct auixp_codec *) hdl;
+	return co->codec_if->vtbl->mixer_set_port(co->codec_if, mc);
+}
+
+
+/* pass request to AC'97 codec code */
+int
+auixp_get_port(void *hdl, mixer_ctrl_t *mc)
+{
+	struct auixp_codec *co;
+
+	co = (struct auixp_codec *) hdl;
+	return co->codec_if->vtbl->mixer_get_port(co->codec_if, mc);
+}
+
+/* pass request to AC'97 codec code */
+int
+auixp_query_devinfo(void *hdl, mixer_devinfo_t *di)
+{
+	struct auixp_codec *co;
+
+	co = (struct auixp_codec *) hdl;
+	return co->codec_if->vtbl->query_devinfo(co->codec_if, di);
+}
+
+
+size_t
+auixp_round_buffersize(void *hdl, int direction, size_t bufsize)
+{
+
+	/* XXX force maximum? i.e. 256 kb? */
+	return bufsize;
+}
+
+
+int
+auixp_get_props(void *hdl)
+{
+
+	return AUDIO_PROP_MMAP | AUDIO_PROP_INDEPENDENT | AUDIO_PROP_FULLDUPLEX;
+}
+
+
+/*
+ * A dma descriptor has dma->nsegs segments defined in dma->segs set up when
+ * we claimed the memory.
+ *
+ * Due to our demand for one contiguous DMA area, we only have one segment. A
+ * c_dma structure is about 3 kb for the 256 entries we maximally program
+ * -arbitrary limit AFAIK- so all is most likely to be in one segment/page
+ * anyway.
+ *
+ * XXX ought to implement fragmented dma area XXX
+ *
+ * Note that _v variables depict kernel virtual addresses, _p variables depict
+ * physical addresses.
+ */
+void
+auixp_link_daisychain(struct auixp_softc *sc,
+		struct auixp_dma *c_dma, struct auixp_dma *s_dma,
+		int blksize, int blocks)
+{
+	atiixp_dma_desc_t *caddr_v, *next_caddr_v;
+	u_int32_t caddr_p, next_caddr_p, saddr_p;
+	int i;
+
+	/* just make sure we are not changing when its running */
+	auixp_disable_dma(sc, c_dma);
+
+	/* setup dma chain start addresses */
+	caddr_v = KERNADDR(c_dma);
+	caddr_p = DMAADDR(c_dma);
+	saddr_p = DMAADDR(s_dma);
+
+	/* program the requested number of blocks */
+	for (i = 0; i < blocks; i++) {
+		/* clear the block just in case */
+		bzero(caddr_v, sizeof(atiixp_dma_desc_t));
+
+		/* round robin the chain dma addresses for its successor */
+		next_caddr_v = caddr_v + 1;
+		next_caddr_p = caddr_p + sizeof(atiixp_dma_desc_t);
+
+		if (i == blocks-1) {
+			next_caddr_v = KERNADDR(c_dma);
+			next_caddr_p = DMAADDR(c_dma);
+		}
+
+		/* fill in the hardware dma chain descriptor in little-endian */
+		caddr_v->addr   = htole32(saddr_p);
+		caddr_v->status = htole16(0);
+		caddr_v->size   = htole16((blksize >> 2)); /* in dwords (!!!) */
+		caddr_v->next   = htole32(next_caddr_p);
+
+		/* advance slot */
+		saddr_p += blksize;	/* XXX assuming contiguous XXX */
+		caddr_v  = next_caddr_v;
+		caddr_p  = next_caddr_p;
+	}
+}
+
+
+int
+auixp_allocate_dma_chain(struct auixp_softc *sc, struct auixp_dma **dmap)
+{
+	struct auixp_dma *dma;
+	int error;
+
+	/* allocate keeper of dma area */
+	*dmap = NULL;
+	dma = malloc(sizeof(*dma), M_DEVBUF, M_NOWAIT);
+	if (!dma)
+		return ENOMEM;
+	bzero(dma, sizeof(*dma));
+
+	/* allocate for daisychain of IXP hardware-dma descriptors */
+	error = auixp_allocmem(sc, DMA_DESC_CHAIN * sizeof(atiixp_dma_desc_t),
+	    16, dma);
+	if (error) {
+		printf("%s: can't malloc dma descriptor chain\n",
+		    sc->sc_dev.dv_xname);
+		return ENOMEM;
+	}
+
+	/* return info and initialise structure */
+	dma->intr    = NULL;
+	dma->intrarg = NULL;
+
+	*dmap = dma;
+	return 0;
+}
+
+
+/* program dma chain in it's link address descriptor */
+void
+auixp_program_dma_chain(struct auixp_softc *sc, struct auixp_dma *dma)
+{
+	bus_space_tag_t    iot;
+	bus_space_handle_t ioh;
+	u_int32_t value;
+
+	iot = sc->sc_iot;
+	ioh = sc->sc_ioh;
+	/* get hardware start address of DMA chain and set valid-flag in it */
+	/* XXX allways at start? XXX */
+	value = DMAADDR(dma);
+	value = value | ATI_REG_LINKPTR_EN;
+
+	/* reset linkpointer */
+	bus_space_write_4(iot, ioh, dma->linkptr, 0);
+
+	/* reset this DMA engine */
+	auixp_disable_dma(sc, dma);
+	auixp_enable_dma(sc, dma);
+
+	/* program new DMA linkpointer */
+	bus_space_write_4(iot, ioh, dma->linkptr, value);
+}
+
+
+/* called from interrupt code to signal end of one dma-slot */
+void
+auixp_dma_update(struct auixp_softc *sc, struct auixp_dma *dma)
+{
+
+	/* be very paranoid */
+	if (!dma)
+		panic("auixp: update: dma = NULL");
+	if (!dma->intr)
+		panic("auixp: update: dma->intr = NULL");
+
+	/* request more input from upper layer */
+	(*dma->intr)(dma->intrarg);
+}
+
+
+/*
+ * The magic `busbusy' bit that needs to be set when dma is active; allowing
+ * busmastering?
+ */
+void
+auixp_update_busbusy(struct auixp_softc *sc)
+{
+	bus_space_tag_t    iot;
+	bus_space_handle_t ioh;
+	u_int32_t value;
+	int running;
+
+	iot = sc->sc_iot;
+	ioh = sc->sc_ioh;
+	/* set bus-busy flag when either recording or playing is performed */
+	value  = bus_space_read_4(iot, ioh, ATI_REG_IER);
+	value &= ~ATI_REG_IER_SET_BUS_BUSY;
+
+	running = ((sc->sc_output_dma->running) || (sc->sc_input_dma->running));
+	if (running)
+		value |= ATI_REG_IER_SET_BUS_BUSY;
+
+	bus_space_write_4(iot, ioh, ATI_REG_IER, value);
+
+}
+
+
+/*
+ * Called from upper audio layer to request playing audio, only called once;
+ * audio is refilled by calling the intr() function when space is available
+ * again.
+ */
+/* XXX allmost literaly a copy of trigger-input; could be factorised XXX */
+int
+auixp_trigger_output(void *hdl, void *start, void *end, int blksize,
+    void (*intr)(void *), void *intrarg, struct audio_params *param)
+{
+	struct auixp_codec *co;
+	struct auixp_softc *sc;
+	struct auixp_dma   *chain_dma;
+	struct auixp_dma   *sound_dma;
+	u_int32_t blocks;
+
+	co = (struct auixp_codec *) hdl;
+	sc = co->sc;
+	chain_dma = sc->sc_output_dma;
+	/* add functions to call back */
+	chain_dma->intr    = intr;
+	chain_dma->intrarg = intrarg;
+
+	/*
+	 * Program output DMA chain with blocks from [start...end] with
+	 * blksize fragments.
+	 *
+	 * NOTE, we can assume its in one block since we asked for it to be in
+	 * one contiguous blob; XXX change this? XXX
+	 */
+	blocks = (size_t) (((caddr_t) end) - ((caddr_t) start)) / blksize;
+
+	/* lookup `start' address in our list of DMA area's */
+	SLIST_FOREACH(sound_dma, &sc->sc_dma_list, dma_chain) {
+		if (KERNADDR(sound_dma) == start)
+			break;
+	}
+
+	/* not ours ? then bail out */
+	if (!sound_dma) {
+		printf("%s: auixp_trigger_output: bad sound addr %p\n",
+		    sc->sc_dev.dv_xname, start);
+		return EINVAL;
+	}
+
+	/* link round-robin daisychain and program hardware */
+	auixp_link_daisychain(sc, chain_dma, sound_dma, blksize, blocks);
+	auixp_program_dma_chain(sc, chain_dma);
+
+	/* mark we are now able to run now */
+	chain_dma->running = 1;
+
+	/* update bus-flags; XXX programs more flags XXX */
+	auixp_update_busbusy(sc);
+
+	/* callbacks happen in interrupt routine */
+	return 0;
+}
+
+
+/* halt output of audio, just disable it's dma and update bus state */
+int
+auixp_halt_output(void *hdl)
+{
+	struct auixp_codec *co;
+	struct auixp_softc *sc;
+	struct auixp_dma   *dma;
+
+	co  = (struct auixp_codec *) hdl;
+	sc  = co->sc;
+	dma = sc->sc_output_dma;
+	auixp_disable_dma(sc, dma);
+
+	dma->running = 0;
+	auixp_update_busbusy(sc);
+
+	return 0;
+}
+
+
+/* XXX allmost literaly a copy of trigger-output; could be factorised XXX */
+int
+auixp_trigger_input(void *hdl, void *start, void *end, int blksize,
+    void (*intr)(void *), void *intrarg, struct audio_params *param)
+{
+	struct auixp_codec *co;
+	struct auixp_softc *sc;
+	struct auixp_dma   *chain_dma;
+	struct auixp_dma   *sound_dma;
+	u_int32_t blocks;
+
+	co = (struct auixp_codec *) hdl;
+	sc = co->sc;
+	chain_dma = sc->sc_input_dma;
+	/* add functions to call back */
+	chain_dma->intr    = intr;
+	chain_dma->intrarg = intrarg;
+
+	/*
+	 * Program output DMA chain with blocks from [start...end] with
+	 * blksize fragments.
+	 *
+	 * NOTE, we can assume its in one block since we asked for it to be in
+	 * one contiguous blob; XXX change this? XXX
+	 */
+	blocks = (size_t) (((caddr_t) end) - ((caddr_t) start)) / blksize;
+
+	/* lookup `start' address in our list of DMA area's */
+	SLIST_FOREACH(sound_dma, &sc->sc_dma_list, dma_chain) {
+		if (KERNADDR(sound_dma) == start)
+			break;
+	}
+
+	/* not ours ? then bail out */
+	if (!sound_dma) {
+		printf("%s: auixp_trigger_input: bad sound addr %p\n",
+		    sc->sc_dev.dv_xname, start);
+		return EINVAL;
+	}
+
+	/* link round-robin daisychain and program hardware */
+	auixp_link_daisychain(sc, chain_dma, sound_dma, blksize, blocks);
+	auixp_program_dma_chain(sc, chain_dma);
+
+	/* mark we are now able to run now */
+	chain_dma->running = 1;
+
+	/* update bus-flags; XXX programs more flags XXX */
+	auixp_update_busbusy(sc);
+
+	/* callbacks happen in interrupt routine */
+	return 0;
+}
+
+
+/* halt sampling audio, just disable it's dma and update bus state */
+int
+auixp_halt_input(void *hdl)
+{
+	struct auixp_codec *co;
+	struct auixp_softc *sc;
+	struct auixp_dma   *dma;
+
+	co = (struct auixp_codec *) hdl;
+	sc = co->sc;
+	dma = sc->sc_output_dma;
+	auixp_disable_dma(sc, dma);
+
+	dma->running = 0;
+	auixp_update_busbusy(sc);
+
+	return 0;
+}
+
+
+/*
+ * IXP audio interrupt handler
+ *
+ * note that we return the number of bits handled; the return value is not
+ * documentated but i saw it implemented in other drivers. Prolly returning a
+ * value > 0 means "i've dealt with it"
+ *
+ */
+int
+auixp_intr(void *softc)
+{
+	struct auixp_softc *sc;
+	bus_space_tag_t    iot;
+	bus_space_handle_t ioh;
+	u_int32_t status, enable, detected_codecs;
+	int ret;
+
+	sc = softc;
+	iot = sc->sc_iot;
+	ioh = sc->sc_ioh;
+	ret = 0;
+	/* get status from the interrupt status register */
+	status = bus_space_read_4(iot, ioh, ATI_REG_ISR);
+
+	if (status == 0)
+		return 0;
+
+	DPRINTF(("%s: (status = %x)\n", sc->sc_dev.dv_xname, status));
+
+	/* check DMA UPDATE flags for input & output */
+	if (status & ATI_REG_ISR_IN_STATUS) {
+		ret++; DPRINTF(("IN_STATUS\n"));
+		auixp_dma_update(sc, sc->sc_input_dma);
+	}
+	if (status & ATI_REG_ISR_OUT_STATUS) {
+		ret++; DPRINTF(("OUT_STATUS\n"));
+		auixp_dma_update(sc, sc->sc_output_dma);
+	}
+
+	/* XXX XRUN flags not used/needed yet; should i implement it? XXX */
+	/* acknowledge the interrupts nevertheless */
+	if (status & ATI_REG_ISR_IN_XRUN) {
+		ret++; DPRINTF(("IN_XRUN\n"));
+		/* auixp_dma_xrun(sc, sc->sc_input_dma);  */
+	}
+	if (status & ATI_REG_ISR_OUT_XRUN) {
+		ret++; DPRINTF(("OUT_XRUN\n"));
+		/* auixp_dma_xrun(sc, sc->sc_output_dma); */
+	}
+
+	/* check if we are looking for codec detection */
+	if (status & CODEC_CHECK_BITS) {
+		ret++;
+		/* mark missing codecs as not ready */
+		detected_codecs = status & CODEC_CHECK_BITS;
+		sc->sc_codec_not_ready_bits |= detected_codecs;
+
+		/* disable detected interupt sources */
+		enable  = bus_space_read_4(iot, ioh, ATI_REG_IER);
+		enable &= ~detected_codecs;
+		bus_space_write_4(iot, ioh, ATI_REG_IER, enable);
+	}
+
+	/* acknowledge interrupt sources */
+	bus_space_write_4(iot, ioh, ATI_REG_ISR, status);
+
+	return ret;
+}
+
+
+/* allocate memory for dma purposes; on failure of any of the steps, roll back */
+int
+auixp_allocmem(struct auixp_softc *sc, size_t size,
+	       size_t align, struct auixp_dma *dma)
+{
+	int error;
+
+	/* remember size */
+	dma->size = size;
+
+	/* allocate DMA safe memory but in just one segment for now :( */
+	error = bus_dmamem_alloc(sc->sc_dmat, dma->size, align, 0,
+	    dma->segs, sizeof(dma->segs) / sizeof(dma->segs[0]), &dma->nsegs,
+	    BUS_DMA_NOWAIT);
+	if (error)
+		return error;
+
+	/*
+	 * map allocated memory into kernel virtual address space and keep it
+	 * coherent with the CPU.
+	 */
+	error = bus_dmamem_map(sc->sc_dmat, dma->segs, dma->nsegs, dma->size,
+				&dma->addr, BUS_DMA_NOWAIT | BUS_DMA_COHERENT);
+	if (error)
+		goto free;
+
+	/* allocate associated dma handle and initialize it. */
+	error = bus_dmamap_create(sc->sc_dmat, dma->size, 1, dma->size, 0,
+				  BUS_DMA_NOWAIT, &dma->map);
+	if (error)
+		goto unmap;
+
+	/*
+	 * load the dma handle with mappings for a dma transfer; all pages
+	 * need to be wired.
+	 */
+	error = bus_dmamap_load(sc->sc_dmat, dma->map, dma->addr, dma->size, NULL,
+				BUS_DMA_NOWAIT);
+	if (error)
+		goto destroy;
+
+	return 0;
+
+destroy:
+	bus_dmamap_destroy(sc->sc_dmat, dma->map);
+unmap:
+	bus_dmamem_unmap(sc->sc_dmat, dma->addr, dma->size);
+free:
+	bus_dmamem_free(sc->sc_dmat, dma->segs, dma->nsegs);
+
+	return error;
+}
+
+
+/* undo dma mapping and release memory allocated */
+int
+auixp_freemem(struct auixp_softc *sc, struct auixp_dma *p)
+{
+
+	bus_dmamap_unload(sc->sc_dmat, p->map);
+	bus_dmamap_destroy(sc->sc_dmat, p->map);
+	bus_dmamem_unmap(sc->sc_dmat, p->addr, p->size);
+	bus_dmamem_free(sc->sc_dmat, p->segs, p->nsegs);
+
+	return 0;
+}
+
+
+/* memory map dma memory */
+paddr_t
+auixp_mappage(void *hdl, void *mem, off_t off, int prot)
+{
+	struct auixp_codec *co;
+	struct auixp_softc *sc;
+	struct auixp_dma *p;
+
+	co = (struct auixp_codec *) hdl;
+	sc  = co->sc;
+	/* for sanity */
+	if (off < 0)
+		return -1;
+
+	/* look up allocated DMA area */
+	SLIST_FOREACH(p, &sc->sc_dma_list, dma_chain) {
+		if (KERNADDR(p) == mem)
+			break;
+	}
+
+	/* have we found it ? */
+	if (!p)
+		return -1;
+
+	/* return mmap'd region */
+	return bus_dmamem_mmap(sc->sc_dmat, p->segs, p->nsegs,
+	    off, prot, BUS_DMA_WAITOK);
+}
+
+int
+auixp_match(struct device *dev, void *match, void *aux)
+{
+	return (pci_matchbyid((struct pci_attach_args *)aux, auixp_pci_devices,
+	    sizeof(auixp_pci_devices)/sizeof(auixp_pci_devices[0])));
+}
+
+void
+auixp_attach(struct device *parent, struct device *self, void *aux)
+{
+	struct auixp_softc *sc;
+	struct pci_attach_args *pa;
+	pcitag_t tag;
+	pci_chipset_tag_t pc;
+	pci_intr_handle_t ih;
+	const char *intrstr;
+	int len;
+
+	sc = (struct auixp_softc *)self;
+	pa = (struct pci_attach_args *)aux;
+	tag = pa->pa_tag;
+	pc = pa->pa_pc;
+
+	/* map memory; its not sized -> what is the size? max PCI slot size? */
+	if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_MEM, 0,
+	    &sc->sc_iot, &sc->sc_ioh, &sc->sc_iob, &sc->sc_ios, 0)) {
+		printf(": can't map memory space\n");
+		return;
+	}
+
+	/* Initialize softc */
+	sc->sc_tag = tag;
+	sc->sc_pct = pc;
+	sc->sc_dmat = pa->pa_dmat;
+	SLIST_INIT(&sc->sc_dma_list);
+
+	/* get us the auixp_dma structures */
+	auixp_allocate_dma_chain(sc, &sc->sc_output_dma);
+	auixp_allocate_dma_chain(sc, &sc->sc_input_dma);
+
+	/* when that fails we are dead in the water */
+	if (!sc->sc_output_dma || !sc->sc_input_dma)
+		return;
+
+	/* fill in the missing details about the dma channels. */
+
+	/* for output */
+	sc->sc_output_dma->linkptr        = ATI_REG_OUT_DMA_LINKPTR;
+	sc->sc_output_dma->dma_enable_bit = ATI_REG_CMD_OUT_DMA_EN |
+					    ATI_REG_CMD_SEND_EN;
+	/* have spdif? then this too! XXX not seeing LED yet! XXX */
+	if (sc->has_spdif)
+		sc->sc_output_dma->dma_enable_bit |= ATI_REG_CMD_SPDF_OUT_EN;
+
+	/* and for input */
+	sc->sc_input_dma->linkptr         = ATI_REG_IN_DMA_LINKPTR;
+	sc->sc_input_dma->dma_enable_bit  = ATI_REG_CMD_IN_DMA_EN  |
+					    ATI_REG_CMD_RECEIVE_EN;
+
+#if 0
+	/* could preliminary program DMA chain */
+	auixp_program_dma_chain(sc, sc->sc_output_dma);
+	auixp_program_dma_chain(sc, sc->sc_input_dma);
+#endif
+
+	if (pci_intr_map(pa, &ih)) {
+		printf(": can't map interrupt\n");
+		return;
+	}
+	intrstr = pci_intr_string(pc, ih);
+	sc->sc_ih = pci_intr_establish(pc, ih, IPL_AUDIO, auixp_intr, sc,
+	    sc->sc_dev.dv_xname);
+	if (sc->sc_ih == NULL) {
+		printf(": can't establish interrupt");
+		if (intrstr != NULL)
+			printf(" at %s", intrstr);
+		printf("\n");
+		return;
+	}
+	printf(": %s\n", intrstr);
+
+	strlcpy(sc->sc_audev.name, "ATI IXP AC97", sizeof sc->sc_audev.name);
+	snprintf(sc->sc_audev.version, sizeof sc->sc_audev.version, "0x%02x",
+	    PCI_REVISION(pa->pa_class));
+	strlcpy(sc->sc_audev.config, sc->sc_dev.dv_xname,
+	    sizeof sc->sc_audev.config);
+
+	/* power up chip */
+	auixp_power(sc, PCI_PMCSR_STATE_D0);
+
+	/* init chip */
+	if (auixp_init(sc) == -1) {
+		printf("%s: auixp_attach: unable to initialize the card\n",
+		    sc->sc_dev.dv_xname);
+		return;
+	}
+
+	/* XXX set up power hooks; not implemented yet XXX */
+
+	len = 1;	/* shut up gcc */
+#ifdef notyet
+	/* create suspend save area */
+	len = sizeof(u_int16_t) * (ESA_REV_B_CODE_MEMORY_LENGTH
+	    + ESA_REV_B_DATA_MEMORY_LENGTH + 1);
+	sc->savemem = (u_int16_t *)malloc(len, M_DEVBUF, M_NOWAIT | M_ZERO);
+	if (sc->savemem == NULL) {
+		printf("%s: unable to allocate suspend buffer\n",
+		    sc->sc_dev.dv_xname);
+		return;
+	}
+
+	sc->powerhook = powerhook_establish(auixp_powerhook, sc);
+	if (sc->powerhook == NULL)
+		printf("%s: WARNING: unable to establish powerhook\n",
+		    sc->sc_dev.dv_xname);
+
+#endif
+
+	/*
+	 * delay further configuration of codecs and audio after interrupts
+	 * are enabled.
+	 */
+	mountroothook_establish(auixp_post_config, self);
+}
+
+/* called from autoconfigure system when interrupts are enabled */
+void
+auixp_post_config(void *self)
+{
+	struct auixp_softc *sc;
+	struct auixp_codec *codec;
+	int codec_nr;
+
+	sc = (struct auixp_softc *)self;
+	/* detect the AC97 codecs */
+	auixp_autodetect_codecs(sc);
+
+#if notyet
+	/* copy formats and invalidate entries not suitable for codec0 */
+	sc->has_4ch   = AC97_IS_4CH(codec->codec_if);
+	sc->has_6ch   = AC97_IS_6CH(codec->codec_if);
+	sc->is_fixed  = AC97_IS_FIXED_RATE(codec->codec_if);
+	sc->has_spdif = AC97_HAS_SPDIF(codec->codec_if);
+#endif
+
+	/* attach audio devices for all detected codecs */
+	for (codec_nr = 0; codec_nr < ATI_IXP_CODECS; codec_nr++) {
+		codec = &sc->sc_codec[codec_nr];
+		if (codec->present)
+			audio_attach_mi(&auixp_hw_if, codec, &sc->sc_dev);
+	}
+
+	/* done! now enable all interrupts we can service */
+	auixp_enable_interrupts(sc);
+}
+
+void
+auixp_enable_interrupts(struct auixp_softc *sc)
+{
+	bus_space_tag_t     iot;
+	bus_space_handle_t  ioh;
+	u_int32_t value;
+
+	iot = sc->sc_iot;
+	ioh = sc->sc_ioh;
+	/* clear all pending */
+	bus_space_write_4(iot, ioh, ATI_REG_ISR, 0xffffffff);
+
+	/* enable all relevant interrupt sources we can handle */
+	value = bus_space_read_4(iot, ioh, ATI_REG_IER);
+
+	value |= ATI_REG_IER_IO_STATUS_EN;
+#ifdef notyet
+	value |= ATI_REG_IER_IN_XRUN_EN;
+	value |= ATI_REG_IER_OUT_XRUN_EN;
+
+	value |= ATI_REG_IER_SPDIF_XRUN_EN;
+	value |= ATI_REG_IER_SPDF_STATUS_EN;
+#endif
+
+	bus_space_write_4(iot, ioh, ATI_REG_IER, value);
+}
+
+void
+auixp_disable_interrupts(struct auixp_softc *sc)
+{
+	bus_space_tag_t     iot;
+	bus_space_handle_t  ioh;
+
+	iot = sc->sc_iot;
+	ioh = sc->sc_ioh;
+	/* disable all interrupt sources */
+	bus_space_write_4(iot, ioh, ATI_REG_IER, 0);
+
+	/* clear all pending */
+	bus_space_write_4(iot, ioh, ATI_REG_ISR, 0xffffffff);
+}
+
+/* dismantle what we've set up by undoing setup */
+int
+auixp_detach(struct device *self, int flags)
+{
+	struct auixp_softc *sc;
+
+	sc = (struct auixp_softc *)self;
+	/* XXX shouldn't we just reset the chip? XXX */
+	/*
+	 * should we explicitly disable interrupt generation and acknowledge
+	 * what's left on? better be safe than sorry.
+	 */
+	auixp_disable_interrupts(sc);
+
+	/* tear down .... */
+	config_detach(&sc->sc_dev, flags);	/* XXX OK? XXX */
+
+	if (sc->sc_ih != NULL)
+		pci_intr_disestablish(sc->sc_pct, sc->sc_ih);
+	if (sc->sc_ios)
+		bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_ios);
+
+	if (sc->savemem)
+		free(sc->savemem, M_DEVBUF);
+
+	return 0;
+}
+
+
+/*
+ * codec handling
+ *
+ * IXP audio support can have upto 3 codecs! are they chained ? or
+ * alternative outlets with the same audio feed i.e. with different mixer
+ * settings? XXX does NetBSD support more than one audio codec? XXX
+ */
+
+
+int
+auixp_attach_codec(void *aux, struct ac97_codec_if *codec_if)
+{
+	struct auixp_codec *ixp_codec;
+
+	ixp_codec = aux;
+	ixp_codec->codec_if = codec_if;
+	ixp_codec->present  = 1;
+
+	return 0;
+}
+
+int
+auixp_read_codec(void *aux, u_int8_t reg, u_int16_t *result)
+{
+	struct auixp_codec *co;
+	struct auixp_softc *sc;
+	bus_space_tag_t     iot;
+	bus_space_handle_t  ioh;
+	u_int32_t data;
+	int timeout;
+
+	co  = aux;
+	sc  = co->sc;
+	iot = sc->sc_iot;
+	ioh = sc->sc_ioh;
+	if (auixp_wait_for_codecs(sc, "read_codec"))
+		return 0xffff;
+
+	/* build up command for reading codec register */
+	data = (reg << ATI_REG_PHYS_OUT_ADDR_SHIFT) |
+		ATI_REG_PHYS_OUT_ADDR_EN |
+		ATI_REG_PHYS_OUT_RW |
+		co->codec_nr;
+
+	bus_space_write_4(iot, ioh, ATI_REG_PHYS_OUT_ADDR, data);
+
+	if (auixp_wait_for_codecs(sc, "read_codec"))
+		return 0xffff;
+
+	/* wait until codec info is clocked in */
+	timeout = 500;		/* 500*2 usec -> 0.001 sec */
+	do {
+		data = bus_space_read_4(iot, ioh, ATI_REG_PHYS_IN_ADDR);
+		if (data & ATI_REG_PHYS_IN_READ_FLAG) {
+			DPRINTF(("read ac'97 codec reg 0x%x = 0x%08x\n",
+				reg, data >> ATI_REG_PHYS_IN_DATA_SHIFT));
+			*result = data >> ATI_REG_PHYS_IN_DATA_SHIFT;
+			return 0;
+		}
+		DELAY(2);
+		timeout--;
+	} while (timeout > 0);
+
+	if (reg < 0x7c)
+		printf("%s: codec read timeout! (reg %x)\n",
+		    sc->sc_dev.dv_xname, reg);
+
+	return 0xffff;
+}
+
+int
+auixp_write_codec(void *aux, u_int8_t reg, u_int16_t data)
+{
+	struct auixp_codec *co;
+	struct auixp_softc *sc;
+	bus_space_tag_t     iot;
+	bus_space_handle_t  ioh;
+	u_int32_t value;
+
+	DPRINTF(("write ac'97 codec reg 0x%x = 0x%08x\n", reg, data));
+	co  = aux;
+	sc  = co->sc;
+	iot = sc->sc_iot;
+	ioh = sc->sc_ioh;
+	if (auixp_wait_for_codecs(sc, "write_codec"))
+		return -1;
+
+	/* build up command for writing codec register */
+	value = (((u_int32_t) data) << ATI_REG_PHYS_OUT_DATA_SHIFT) |
+		(((u_int32_t)  reg) << ATI_REG_PHYS_OUT_ADDR_SHIFT) |
+		ATI_REG_PHYS_OUT_ADDR_EN |
+		co->codec_nr;
+
+	bus_space_write_4(iot, ioh, ATI_REG_PHYS_OUT_ADDR, value);
+
+	return 0;
+}
+
+void
+auixp_reset_codec(void *aux)
+{
+
+	/* nothing to be done? */
+}
+
+enum ac97_host_flags
+auixp_flags_codec(void *aux)
+{
+	struct auixp_codec *ixp_codec;
+
+	ixp_codec = aux;
+	return ixp_codec->codec_flags;
+}
+
+int
+auixp_wait_for_codecs(struct auixp_softc *sc, const char *func)
+{
+	bus_space_tag_t      iot;
+	bus_space_handle_t   ioh;
+	u_int32_t value;
+	int timeout;
+
+	iot = sc->sc_iot;
+	ioh = sc->sc_ioh;
+	/* wait until all codec transfers are done */
+	timeout = 500;		/* 500*2 usec -> 0.001 sec */
+	do {
+		value = bus_space_read_4(iot, ioh, ATI_REG_PHYS_OUT_ADDR);
+		if ((value & ATI_REG_PHYS_OUT_ADDR_EN) == 0)
+			return 0;
+
+		DELAY(2);
+		timeout--;
+	} while (timeout > 0);
+
+	printf("%s: %s: timed out\n", func, sc->sc_dev.dv_xname);
+	return -1;
+}
+
+void
+auixp_autodetect_codecs(struct auixp_softc *sc)
+{
+	bus_space_tag_t      iot;
+	bus_space_handle_t   ioh;
+	struct auixp_codec  *codec;
+	int timeout, codec_nr;
+
+	iot = sc->sc_iot;
+	ioh = sc->sc_ioh;
+	/* ATI IXP can have upto 3 codecs; mark all codecs as not existing */
+	sc->sc_codec_not_ready_bits = 0;
+	sc->sc_num_codecs = 0;
+
+	/* enable all codecs to interrupt as well as the new frame interrupt */
+	bus_space_write_4(iot, ioh, ATI_REG_IER, CODEC_CHECK_BITS);
+
+	/* wait for the interrupts to happen */
+	timeout = 100;		/* 100.000 usec -> 0.1 sec */
+
+	while (timeout > 0) {
+		DELAY(1000);
+		if (sc->sc_codec_not_ready_bits)
+			break;
+		timeout--;
+	}
+
+	if (timeout == 0)
+		printf("%s: WARNING: timeout during codec detection; "
+			"codecs might be present but haven't interrupted\n",
+			sc->sc_dev.dv_xname);
+
+	/* disable all interrupts for now */
+	auixp_disable_interrupts(sc);
+
+	/* Attach AC97 host interfaces */
+	for (codec_nr = 0; codec_nr < ATI_IXP_CODECS; codec_nr++) {
+		codec = &sc->sc_codec[codec_nr];
+		bzero(codec, sizeof(struct auixp_codec));
+
+		codec->sc       = sc;
+		codec->codec_nr = codec_nr;
+		codec->present  = 0;
+
+		codec->host_if.arg    = codec;
+		codec->host_if.attach = auixp_attach_codec;
+		codec->host_if.read   = auixp_read_codec;
+		codec->host_if.write  = auixp_write_codec;
+		codec->host_if.reset  = auixp_reset_codec;
+		codec->host_if.flags  = auixp_flags_codec;
+	}
+
+	if (!(sc->sc_codec_not_ready_bits & ATI_REG_ISR_CODEC0_NOT_READY)) {
+		/* codec 0 present */
+		DPRINTF(("auixp : YAY! codec 0 present!\n"));
+		if (ac97_attach(&sc->sc_codec[0].host_if) == 0)
+			sc->sc_num_codecs++;
+	}
+
+#ifdef notyet
+	if (!(sc->sc_codec_not_ready_bits & ATI_REG_ISR_CODEC1_NOT_READY)) {
+		/* codec 1 present */
+		DPRINTF(("auixp : YAY! codec 1 present!\n"));
+		if (ac97_attach(&sc->sc_codec[1].host_if, &sc->sc_dev) == 0)
+			sc->sc_num_codecs++;
+	}
+
+	if (!(sc->sc_codec_not_ready_bits & ATI_REG_ISR_CODEC2_NOT_READY)) {
+		/* codec 2 present */
+		DPRINTF(("auixp : YAY! codec 2 present!\n"));
+		if (ac97_attach(&sc->sc_codec[2].host_if, &sc->sc_dev) == 0)
+			sc->sc_num_codecs++;
+	}
+#endif
+
+	if (sc->sc_num_codecs == 0) {
+		printf("%s: no codecs detected or initialised\n",
+		    sc->sc_dev.dv_xname);
+		return;
+	}
+}
+
+void
+auixp_disable_dma(struct auixp_softc *sc, struct auixp_dma *dma)
+{
+	bus_space_tag_t      iot;
+	bus_space_handle_t   ioh;
+	u_int32_t value;
+
+	iot = sc->sc_iot;
+	ioh = sc->sc_ioh;
+	/* lets not stress the DMA engine more than nessisary */
+	value = bus_space_read_4(iot, ioh, ATI_REG_CMD);
+	if (value & dma->dma_enable_bit) {
+		value &= ~dma->dma_enable_bit;
+		bus_space_write_4(iot, ioh, ATI_REG_CMD, value);
+	}
+}
+
+void
+auixp_enable_dma(struct auixp_softc *sc, struct auixp_dma *dma)
+{
+	bus_space_tag_t      iot;
+	bus_space_handle_t   ioh;
+	u_int32_t value;
+
+	iot = sc->sc_iot;
+	ioh = sc->sc_ioh;
+	/* lets not stress the DMA engine more than nessisary */
+	value = bus_space_read_4(iot, ioh, ATI_REG_CMD);
+	if (!(value & dma->dma_enable_bit)) {
+		value |= dma->dma_enable_bit;
+		bus_space_write_4(iot, ioh, ATI_REG_CMD, value);
+	}
+}
+
+void
+auixp_reset_aclink(struct auixp_softc *sc)
+{
+	bus_space_tag_t      iot;
+	bus_space_handle_t   ioh;
+	u_int32_t value, timeout;
+
+	iot = sc->sc_iot;
+	ioh = sc->sc_ioh;
+
+	/* if power is down, power it up */
+	value = bus_space_read_4(iot, ioh, ATI_REG_CMD);
+	if (value & ATI_REG_CMD_POWERDOWN) {
+		printf("%s: powering up\n", sc->sc_dev.dv_xname);
+
+		/* explicitly enable power */
+		value &= ~ATI_REG_CMD_POWERDOWN;
+		bus_space_write_4(iot, ioh, ATI_REG_CMD, value);
+
+		/* have to wait at least 10 usec for it to initialise */
+		DELAY(20);
+	};
+
+	printf("%s: soft resetting aclink\n", sc->sc_dev.dv_xname);
+
+	/* perform a soft reset */
+	value  = bus_space_read_4(iot, ioh, ATI_REG_CMD);
+	value |= ATI_REG_CMD_AC_SOFT_RESET;
+	bus_space_write_4(iot, ioh, ATI_REG_CMD, value);
+
+	/* need to read the CMD reg and wait aprox. 10 usec to init */
+	value  = bus_space_read_4(iot, ioh, ATI_REG_CMD);
+	DELAY(20);
+
+	/* clear soft reset flag again */
+	value  = bus_space_read_4(iot, ioh, ATI_REG_CMD);
+	value &= ~ATI_REG_CMD_AC_SOFT_RESET;
+	bus_space_write_4(iot, ioh, ATI_REG_CMD, value);
+
+	/* check if the ac-link is working; reset device otherwise */
+	timeout = 10;
+	value = bus_space_read_4(iot, ioh, ATI_REG_CMD);
+	while (!(value & ATI_REG_CMD_ACLINK_ACTIVE)) {
+		printf("%s: not up; resetting aclink hardware\n",
+				sc->sc_dev.dv_xname);
+
+		/* dip aclink reset but keep the acsync */
+		value &= ~ATI_REG_CMD_AC_RESET;
+		value |=  ATI_REG_CMD_AC_SYNC;
+		bus_space_write_4(iot, ioh, ATI_REG_CMD, value);
+
+		/* need to read CMD again and wait again (clocking in issue?) */
+		value = bus_space_read_4(iot, ioh, ATI_REG_CMD);
+		DELAY(20);
+
+		/* assert aclink reset again */
+		value = bus_space_read_4(iot, ioh, ATI_REG_CMD);
+		value |=  ATI_REG_CMD_AC_RESET;
+		bus_space_write_4(iot, ioh, ATI_REG_CMD, value);
+
+		/* check if its active now */
+		value = bus_space_read_4(iot, ioh, ATI_REG_CMD);
+
+		timeout--;
+		if (timeout == 0) break;
+	};
+
+	if (timeout == 0) {
+		printf("%s: giving up aclink reset\n", sc->sc_dev.dv_xname);
+	};
+	if (timeout != 10) {
+		printf("%s: aclink hardware reset successful\n",
+			sc->sc_dev.dv_xname);
+	};
+
+	/* assert reset and sync for safety */
+	value  = bus_space_read_4(iot, ioh, ATI_REG_CMD);
+	value |= ATI_REG_CMD_AC_SYNC | ATI_REG_CMD_AC_RESET;
+	bus_space_write_4(iot, ioh, ATI_REG_CMD, value);
+}
+
+/* chip hard init */
+int
+auixp_init(struct auixp_softc *sc)
+{
+	bus_space_tag_t      iot;
+	bus_space_handle_t   ioh;
+	u_int32_t value;
+
+	iot = sc->sc_iot;
+	ioh = sc->sc_ioh;
+	/* disable all interrupts and clear all sources */
+	auixp_disable_interrupts(sc);
+
+	/* clear all DMA enables (preserving rest of settings) */
+	value = bus_space_read_4(iot, ioh, ATI_REG_CMD);
+	value &= ~( ATI_REG_CMD_IN_DMA_EN  |
+		    ATI_REG_CMD_OUT_DMA_EN |
+		    ATI_REG_CMD_SPDF_OUT_EN );
+	bus_space_write_4(iot, ioh, ATI_REG_CMD, value);
+
+	/* Reset AC-link */
+	auixp_reset_aclink(sc);
+
+	/*
+	 * codecs get auto-detected later
+	 *
+	 * note: we are NOT enabling interrupts yet, no codecs have been
+	 * detected yet nor is anything else set up
+	 */
+
+	return 0;
+}
+
+/*
+ * TODO power saving and suspend / resume support
+ */
+int
+auixp_power(struct auixp_softc *sc, int state)
+{
+	pcitag_t tag;
+	pci_chipset_tag_t pc;
+	pcireg_t data;
+	int pmcapreg;
+
+	tag = sc->sc_tag;
+	pc = sc->sc_pct;
+	if (pci_get_capability(pc, tag, PCI_CAP_PWRMGMT, &pmcapreg, 0)) {
+		data = pci_conf_read(pc, tag, pmcapreg + PCI_PMCSR);
+		if ((data & PCI_PMCSR_STATE_MASK) != state)
+			pci_conf_write(pc, tag, pmcapreg + PCI_PMCSR, state);
+	}
+
+	return 0;
+}
+
+#if 0
+void
+auixp_powerhook(int why, void *hdl)
+{
+	struct auixp_softc *sc;
+
+	sc = (struct auixp_softc *)hdl;
+	switch (why) {
+	case PWR_SUSPEND:
+	case PWR_STANDBY:
+		auixp_suspend(sc);
+		break;
+	case PWR_RESUME:
+		auixp_resume(sc);
+/* XXX fix me XXX */
+		(sc->codec_if->vtbl->restore_ports)(sc->codec_if);
+		break;
+	}
+}
+
+int
+auixp_suspend(struct auixp_softc *sc)
+{
+
+	/* XXX no power functions yet XXX */
+	return 0;
+}
+
+int
+auixp_resume(struct auixp_softc *sc)
+{
+
+	/* XXX no power functions yet XXX */
+	return 0;
+}
+#endif /* 0 */
diff --git a/sys/dev/pci/auixpreg.h b/sys/dev/pci/auixpreg.h
new file mode 100644
index 00000000000..b21d945275e
--- /dev/null
+++ b/sys/dev/pci/auixpreg.h
@@ -0,0 +1,181 @@
+/* $OpenBSD: auixpreg.h,v 1.1 2005/08/07 20:08:45 mickey Exp $ */
+/* $NetBSD: auixpreg.h,v 1.2 2005/01/12 00:28:03 reinoud Exp $ */
+
+/*
+ * Copyright (c) 2004, 2005 Reinoud Zandijk <reinoud@netbsd.org>
+ * 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. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the NetBSD
+ *	Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
+ */
+
+/*
+ * NetBSD audio driver for ATI IXP-{150,200,...} audio driver hardware.
+ *
+ * Thanks are due to Takashi Iwai for the constants.
+ */
+
+
+#define ATI_IXP_CODECS 3
+
+
+typedef struct atiixp_dma_desc {
+	u_int32_t	addr;		/* DMA buffer address */
+	u_int16_t	status;		/* status bits; function unknown */
+	u_int16_t	size;		/* size of this DMA packet in dwords */
+	u_int32_t	next;		/* phys pointer to next packet descriptor */
+} __packed atiixp_dma_desc_t;
+
+
+#define ATI_REG_ISR			0x00		/* interrupt source */
+#define  ATI_REG_ISR_IN_XRUN		(1U<<0)
+#define  ATI_REG_ISR_IN_STATUS		(1U<<1)
+#define  ATI_REG_ISR_OUT_XRUN		(1U<<2)
+#define  ATI_REG_ISR_OUT_STATUS		(1U<<3)
+#define  ATI_REG_ISR_SPDF_XRUN		(1U<<4)
+#define  ATI_REG_ISR_SPDF_STATUS	(1U<<5)
+#define  ATI_REG_ISR_PHYS_INTR		(1U<<8)
+#define  ATI_REG_ISR_PHYS_MISMATCH	(1U<<9)
+#define  ATI_REG_ISR_CODEC0_NOT_READY	(1U<<10)
+#define  ATI_REG_ISR_CODEC1_NOT_READY	(1U<<11)
+#define  ATI_REG_ISR_CODEC2_NOT_READY	(1U<<12)
+#define  ATI_REG_ISR_NEW_FRAME		(1U<<13)
+
+#define ATI_REG_IER			0x04		/* interrupt enable */
+#define  ATI_REG_IER_IN_XRUN_EN		(1U<<0)
+#define  ATI_REG_IER_IO_STATUS_EN	(1U<<1)
+#define  ATI_REG_IER_OUT_XRUN_EN	(1U<<2)
+#define  ATI_REG_IER_OUT_XRUN_COND	(1U<<3)
+#define  ATI_REG_IER_SPDF_XRUN_EN	(1U<<4)
+#define  ATI_REG_IER_SPDF_STATUS_EN	(1U<<5)
+#define  ATI_REG_IER_PHYS_INTR_EN	(1U<<8)
+#define  ATI_REG_IER_PHYS_MISMATCH_EN	(1U<<9)
+#define  ATI_REG_IER_CODEC0_INTR_EN	(1U<<10)
+#define  ATI_REG_IER_CODEC1_INTR_EN	(1U<<11)
+#define  ATI_REG_IER_CODEC2_INTR_EN	(1U<<12)
+#define  ATI_REG_IER_NEW_FRAME_EN	(1U<<13)	/* (RO) */
+#define  ATI_REG_IER_SET_BUS_BUSY	(1U<<14)	/* (WO) audio is running */
+
+#define ATI_REG_CMD			0x08		/* command */
+#define  ATI_REG_CMD_POWERDOWN		(1U<<0)
+#define  ATI_REG_CMD_RECEIVE_EN		(1U<<1)
+#define  ATI_REG_CMD_SEND_EN		(1U<<2)
+#define  ATI_REG_CMD_STATUS_MEM		(1U<<3)
+#define  ATI_REG_CMD_SPDF_OUT_EN	(1U<<4)
+#define  ATI_REG_CMD_SPDF_STATUS_MEM	(1U<<5)
+#define  ATI_REG_CMD_SPDF_THRESHOLD	(3U<<6)
+#define  ATI_REG_CMD_SPDF_THRESHOLD_SHIFT	6
+#define  ATI_REG_CMD_IN_DMA_EN		(1U<<8)
+#define  ATI_REG_CMD_OUT_DMA_EN		(1U<<9)
+#define  ATI_REG_CMD_SPDF_DMA_EN	(1U<<10)
+#define  ATI_REG_CMD_SPDF_OUT_STOPPED	(1U<<11)
+#define  ATI_REG_CMD_SPDF_CONFIG_MASK	(7U<<12)
+#define   ATI_REG_CMD_SPDF_CONFIG_34	(1U<<12)
+#define   ATI_REG_CMD_SPDF_CONFIG_78	(2U<<12)
+#define   ATI_REG_CMD_SPDF_CONFIG_69	(3U<<12)
+#define   ATI_REG_CMD_SPDF_CONFIG_01	(4U<<12)
+#define  ATI_REG_CMD_INTERLEAVE_SPDF	(1U<<16)
+#define  ATI_REG_CMD_AUDIO_PRESENT	(1U<<20)
+#define  ATI_REG_CMD_INTERLEAVE_IN	(1U<<21)
+#define  ATI_REG_CMD_INTERLEAVE_OUT	(1U<<22)
+#define  ATI_REG_CMD_LOOPBACK_EN	(1U<<23)
+#define  ATI_REG_CMD_PACKED_DIS		(1U<<24)
+#define  ATI_REG_CMD_BURST_EN		(1U<<25)
+#define  ATI_REG_CMD_PANIC_EN		(1U<<26)
+#define  ATI_REG_CMD_MODEM_PRESENT	(1U<<27)
+#define  ATI_REG_CMD_ACLINK_ACTIVE	(1U<<28)
+#define  ATI_REG_CMD_AC_SOFT_RESET	(1U<<29)
+#define  ATI_REG_CMD_AC_SYNC		(1U<<30)
+#define  ATI_REG_CMD_AC_RESET		(1U<<31)
+
+#define ATI_REG_PHYS_OUT_ADDR		0x0c
+#define  ATI_REG_PHYS_OUT_CODEC_MASK	(3U<<0)
+#define  ATI_REG_PHYS_OUT_RW		(1U<<2)
+#define  ATI_REG_PHYS_OUT_ADDR_EN	(1U<<8)
+#define  ATI_REG_PHYS_OUT_ADDR_SHIFT	9
+#define  ATI_REG_PHYS_OUT_DATA_SHIFT	16
+
+#define ATI_REG_PHYS_IN_ADDR		0x10
+#define  ATI_REG_PHYS_IN_READ_FLAG	(1U<<8)
+#define  ATI_REG_PHYS_IN_ADDR_SHIFT	9
+#define  ATI_REG_PHYS_IN_DATA_SHIFT	16
+
+#define ATI_REG_SLOTREQ			0x14
+
+#define ATI_REG_COUNTER			0x18
+#define  ATI_REG_COUNTER_SLOT		(3U<<0)		/* slot # */
+#define  ATI_REG_COUNTER_BITCLOCK	(31U<<8)
+
+#define ATI_REG_IN_FIFO_THRESHOLD	0x1c
+
+#define ATI_REG_IN_DMA_LINKPTR		0x20
+#define ATI_REG_IN_DMA_DT_START		0x24		/* RO */
+#define ATI_REG_IN_DMA_DT_NEXT		0x28		/* RO */
+#define ATI_REG_IN_DMA_DT_CUR		0x2c		/* RO */
+#define ATI_REG_IN_DMA_DT_SIZE		0x30
+
+#define ATI_REG_OUT_DMA_SLOT		0x34
+#define  ATI_REG_OUT_DMA_SLOT_BIT(x)	(1U << ((x) - 3))
+#define  ATI_REG_OUT_DMA_SLOT_MASK	0x1ff
+#define  ATI_REG_OUT_DMA_THRESHOLD_MASK	0xf800
+#define  ATI_REG_OUT_DMA_THRESHOLD_SHIFT	11
+
+#define ATI_REG_OUT_DMA_LINKPTR		0x38
+#define ATI_REG_OUT_DMA_DT_START	0x3c		/* RO */
+#define ATI_REG_OUT_DMA_DT_NEXT		0x40		/* RO */
+#define ATI_REG_OUT_DMA_DT_CUR		0x44		/* RO */
+#define ATI_REG_OUT_DMA_DT_SIZE		0x48
+
+#define ATI_REG_SPDF_CMD		0x4c
+#define  ATI_REG_SPDF_CMD_LFSR		(1U<<4)
+#define  ATI_REG_SPDF_CMD_SINGLE_CH	(1U<<5)
+#define  ATI_REG_SPDF_CMD_LFSR_ACC	(0xff<<8)	/* RO */
+
+#define ATI_REG_SPDF_DMA_LINKPTR	0x50
+#define ATI_REG_SPDF_DMA_DT_START	0x54		/* RO */
+#define ATI_REG_SPDF_DMA_DT_NEXT	0x58		/* RO */
+#define ATI_REG_SPDF_DMA_DT_CUR		0x5c		/* RO */
+#define ATI_REG_SPDF_DMA_DT_SIZE	0x60
+
+#define ATI_REG_MODEM_MIRROR		0x7c
+#define ATI_REG_AUDIO_MIRROR		0x80
+
+#define ATI_REG_6CH_REORDER		0x84		/* reorder slots for 6ch */
+#define  ATI_REG_6CH_REORDER_EN		(1U<<0)		/* 3,4,7,8,6,9 -> 3,4,6,9,7,8 */
+
+#define ATI_REG_FIFO_FLUSH		0x88
+#define  ATI_REG_FIFO_OUT_FLUSH		(1U<<0)
+#define  ATI_REG_FIFO_IN_FLUSH		(1U<<1)
+
+/* LINKPTR */
+#define  ATI_REG_LINKPTR_EN		(1U<<0)
+
+/* [INT|OUT|SPDIF]_DMA_DT_SIZE */
+#define  ATI_REG_DMA_DT_SIZE		(0xffffU<<0)
+#define  ATI_REG_DMA_FIFO_USED		(0x1fU<<16)
+#define  ATI_REG_DMA_FIFO_FREE		(0x1fU<<21)
+#define  ATI_REG_DMA_STATE		(7U<<26)
diff --git a/sys/dev/pci/auixpvar.h b/sys/dev/pci/auixpvar.h
new file mode 100644
index 00000000000..348ece9d050
--- /dev/null
+++ b/sys/dev/pci/auixpvar.h
@@ -0,0 +1,121 @@
+/* $OpenBSD: auixpvar.h,v 1.1 2005/08/07 20:08:45 mickey Exp $ */
+/* $NetBSD: auixpvar.h,v 1.3 2005/01/12 15:54:34 kent Exp $*/
+
+/*
+ * Copyright (c) 2004, 2005 Reinoud Zandijk <reinoud@netbsd.org>
+ * 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. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the NetBSD
+ *	Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
+ */
+
+
+/*
+ * NetBSD audio driver for ATI IXP-{150,200,...} audio driver hardware.
+ */
+
+#define DMA_DESC_CHAIN	255
+
+/* audio format structure describing our hardware capabilities */
+/* XXX min and max sample rates are for AD1888 codec XXX */
+#define AUIXP_NFORMATS 6
+
+#define AUIXP_MINRATE  7000
+#define AUIXP_MAXRATE 48000
+
+/* auixp structures; used to record alloced DMA space */
+struct auixp_dma {
+	/* bus mappings */
+	bus_dmamap_t		 map;
+	caddr_t			 addr;
+	bus_dma_segment_t	 segs[1];
+	int			 nsegs;
+	size_t			 size;
+
+	/* audio feeder */
+	void			 (*intr)(void *);
+	void			*intrarg;
+
+	/* status and setup bits */
+	int			 running;
+	u_int32_t		 linkptr;
+	u_int32_t		 dma_enable_bit;
+
+	/* linked list of all mapped area's */
+	SLIST_ENTRY(auixp_dma)	 dma_chain;
+};
+
+struct auixp_codec {
+	struct auixp_softc	*sc;
+
+	int			 present;
+	int			 codec_nr;
+
+	struct ac97_codec_if	*codec_if;
+	struct ac97_host_if	 host_if;
+	enum ac97_host_flags	 codec_flags;
+};
+
+struct auixp_softc {
+	struct device		sc_dev;
+	audio_device_t		sc_audev;
+	void			*sc_ih;
+
+	/* card properties */
+	int			has_4ch, has_6ch, is_fixed, has_spdif;
+
+	/* bus tags */
+	bus_space_tag_t		sc_iot;
+	bus_space_handle_t	sc_ioh;
+	bus_addr_t		sc_iob;
+	bus_size_t		sc_ios;
+
+	pcitag_t		sc_tag;
+	pci_chipset_tag_t	sc_pct;
+
+	bus_dma_tag_t		sc_dmat;
+
+	/* DMA business */
+	struct auixp_dma	*sc_output_dma;
+	struct auixp_dma	*sc_input_dma;
+
+	/* list of allocated DMA pieces */
+	SLIST_HEAD(auixp_dma_list, auixp_dma) sc_dma_list;
+
+	/* codecs */
+	int			sc_num_codecs;
+	struct auixp_codec	sc_codec[ATI_IXP_CODECS];
+	int			sc_codec_not_ready_bits;
+
+	/* last set audio parameters */
+	struct audio_params	sc_play_params;
+	struct audio_params	sc_rec_params;
+
+	/* suspend/resume */
+	void			*powerhook;
+	u_int16_t		*savemem;
+};
diff --git a/sys/dev/pci/files.pci b/sys/dev/pci/files.pci
index 5162fc70ff2..06057ed22e6 100644
--- a/sys/dev/pci/files.pci
+++ b/sys/dev/pci/files.pci
@@ -1,4 +1,4 @@
-#	$OpenBSD: files.pci,v 1.183 2005/08/05 16:16:01 mickey Exp $
+#	$OpenBSD: files.pci,v 1.184 2005/08/07 20:08:45 mickey Exp $
 #	$NetBSD: files.pci,v 1.20 1996/09/24 17:47:15 christos Exp $
 #
 # Config file and device description for machine-independent PCI code.
@@ -109,6 +109,11 @@ device	autri: audio, auconv, mulaw, ac97, midibus
 attach	autri at pci
 file	dev/pci/autri.c			autri
 
+# ATI IXP 200/300/400 series AC'97 Audio
+device	auixp: audio, auconv, mulaw, ac97
+attach	auixp at pci
+file	dev/pci/auixp.c			auixp
+
 # CS4280 CrystalClear Audio
 device	clcs: audio, auconv, mulaw, ac97, firmload
 attach	clcs at pci