diff --git a/sound/pci/au88x0/au88x0_a3d.h b/sound/pci/au88x0/au88x0_a3d.h
new file mode 100644
index 0000000..0584c65
--- /dev/null
+++ b/sound/pci/au88x0/au88x0_a3d.h
@@ -0,0 +1,123 @@
+/***************************************************************************
+ *            au88x0_a3d.h
+ *
+ *  Fri Jul 18 14:16:03 2003
+ *  Copyright  2003  mjander
+ *  mjander@users.sourceforge.net
+ ****************************************************************************/
+
+/*
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef _AU88X0_A3D_H
+#define _AU88X0_A3D_H
+
+//#include <openal.h>
+
+#define HRTF_SZ 0x38
+#define DLINE_SZ 0x28
+
+#define CTRLID_HRTF		1
+#define CTRLID_ITD		2
+#define CTRLID_ILD		4
+#define CTRLID_FILTER	8
+#define CTRLID_GAINS	16
+
+/* 3D parameter structs */
+typedef unsigned short int a3d_Hrtf_t[HRTF_SZ];
+typedef unsigned short int a3d_ItdDline_t[DLINE_SZ];
+typedef unsigned short int a3d_atmos_t[5];
+typedef unsigned short int a3d_LRGains_t[2];
+typedef unsigned short int a3d_Itd_t[2];
+typedef unsigned short int a3d_Ild_t[2];
+
+typedef struct {
+	void *vortex;		// Formerly CAsp4HwIO*, now vortex_t*.
+	unsigned int source;	/* this_04 */
+	unsigned int slice;	/* this_08 */
+	a3d_Hrtf_t hrtf[2];
+	a3d_Itd_t itd;
+	a3d_Ild_t ild;
+	a3d_ItdDline_t dline;
+	a3d_atmos_t filter;
+} a3dsrc_t;
+
+/* First Register bank */
+
+#define A3D_A_HrtfCurrent	0x18000	/* 56 ULONG */
+#define A3D_A_GainCurrent	0x180E0
+#define A3D_A_GainTarget	0x180E4
+#define A3D_A_A12Current	0x180E8	/* Atmospheric current. */
+#define A3D_A_A21Target		0x180EC	/* Atmospheric target */
+#define A3D_A_B01Current	0x180F0	/* Atmospheric current */
+#define A3D_A_B10Target		0x180F4	/* Atmospheric target */
+#define A3D_A_B2Current		0x180F8	/* Atmospheric current */
+#define A3D_A_B2Target		0x180FC	/* Atmospheric target */
+#define A3D_A_HrtfTarget	0x18100	/* 56 ULONG */
+#define A3D_A_ITDCurrent	0x181E0
+#define A3D_A_ITDTarget		0x181E4
+#define A3D_A_HrtfDelayLine	0x181E8	/* 56 ULONG */
+#define A3D_A_ITDDelayLine	0x182C8	/* 40/45 ULONG */
+#define A3D_A_HrtfTrackTC	0x1837C	/* Time Constants */
+#define A3D_A_GainTrackTC	0x18380
+#define A3D_A_CoeffTrackTC	0x18384
+#define A3D_A_ITDTrackTC	0x18388
+#define A3D_A_x1			0x1838C
+#define A3D_A_x2			0x18390
+#define A3D_A_y1			0x18394
+#define A3D_A_y2			0x18398
+#define A3D_A_HrtfOutL		0x1839C
+#define A3D_A_HrtfOutR		0x183A0
+#define 	A3D_A_TAIL		0x183A4
+
+/* Second register bank */
+#define A3D_B_HrtfCurrent	0x19000	/* 56 ULONG */
+#define A3D_B_GainCurrent	0x190E0
+#define A3D_B_GainTarget	0x190E4
+#define A3D_B_A12Current	0x190E8
+#define A3D_B_A21Target		0x190EC
+#define A3D_B_B01Current	0x190F0
+#define A3D_B_B10Target		0x190F4
+#define A3D_B_B2Current		0x190F8
+#define A3D_B_B2Target		0x190FC
+#define A3D_B_HrtfTarget	0x19100	/* 56 ULONG */
+#define A3D_B_ITDCurrent	0x191E0
+#define A3D_B_ITDTarget		0x191E4
+#define A3D_B_HrtfDelayLine	0x191E8	/* 56 ULONG */
+#define 	A3D_B_TAIL		0x192C8
+
+/* There are 4 slices, 4 a3d each = 16 a3d sources. */
+#define A3D_SLICE_BANK_A		0x18000	/* 4 sources */
+#define A3D_SLICE_BANK_B		0x19000	/* 4 sources */
+#define A3D_SLICE_VDBDest		0x19C00	/* 8 ULONG */
+#define A3D_SLICE_VDBSource		0x19C20	/* 4 ULONG */
+#define A3D_SLICE_ABReg			0x19C30
+#define A3D_SLICE_CReg			0x19C34
+#define A3D_SLICE_Control		0x19C38
+#define A3D_SLICE_DebugReserved	0x19C3c	/* Dangerous! */
+#define A3D_SLICE_Pointers		0x19C40
+#define 	A3D_SLICE_TAIL		0x1A000
+
+// Slice size: 0x2000
+// Source size: 0x3A4, 0x2C8
+
+/* Address generator macro. */
+#define a3d_addrA(slice,source,reg) (((slice)<<0xd)+((source)*0x3A4)+(reg))
+#define a3d_addrB(slice,source,reg) (((slice)<<0xd)+((source)*0x2C8)+(reg))
+#define a3d_addrS(slice,reg) (((slice)<<0xd)+(reg))
+//#define a3d_addr(slice,source,reg) (((reg)>=0x19000) ? a3d_addr2((slice),(source),(reg)) : a3d_addr1((slice),(source),(reg)))
+
+#endif				/* _AU88X0_A3D_H */