#ifndef __SOUND_EMU8000_H
  #define __SOUND_EMU8000_H
  /*
   *  Defines for the emu8000 (AWE32/64)
   *
   *  Copyright (C) 1999 Steve Ratcliffe
   *  Copyright (C) 1999-2000 Takashi Iwai <tiwai@suse.de>
   *
   *   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 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
   */
  
  #include "emux_synth.h"
  #include "seq_kernel.h"
  
  /*
   * Hardware parameters.
   */
  #define EMU8000_MAX_DRAM (28 * 1024 * 1024) /* Max on-board mem is 28Mb ???*/
  #define EMU8000_DRAM_OFFSET 0x200000	/* Beginning of on board ram */
  #define EMU8000_CHANNELS   32	/* Number of hardware channels */
  #define EMU8000_DRAM_VOICES	30	/* number of normal voices */
  
  /* Flags to set a dma channel to read or write */
  #define EMU8000_RAM_READ   0
  #define EMU8000_RAM_WRITE  1
  #define EMU8000_RAM_CLOSE  2
  #define EMU8000_RAM_MODE_MASK	0x03
  #define EMU8000_RAM_RIGHT	0x10	/* use 'right' DMA channel */
  
  enum {
  	EMU8000_CONTROL_BASS = 0,
  	EMU8000_CONTROL_TREBLE,
  	EMU8000_CONTROL_CHORUS_MODE,
  	EMU8000_CONTROL_REVERB_MODE,
  	EMU8000_CONTROL_FM_CHORUS_DEPTH,
  	EMU8000_CONTROL_FM_REVERB_DEPTH,
  	EMU8000_NUM_CONTROLS,
  };
  
  /*
   * Structure to hold all state information for the emu8000 driver.
   *
   * Note 1: The chip supports 32 channels in hardware this is max_channels
   * some of the channels may be used for other things so max_channels is
   * the number in use for wave voices.
   */

  struct snd_emu8000 {

  	struct snd_emux *emu;

  
  	int index;		/* sequencer client index */
  	int seq_ports;		/* number of sequencer ports */
  	int fm_chorus_depth;	/* FM OPL3 chorus depth */
  	int fm_reverb_depth;	/* FM OPL3 reverb depth */
  
  	int mem_size;		/* memory size */
  	unsigned long port1;	/* Port usually base+0 */
  	unsigned long port2;	/* Port usually at base+0x400 */
  	unsigned long port3;	/* Port usually at base+0x800 */
  	struct resource *res_port1;
  	struct resource *res_port2;
  	struct resource *res_port3;
  	unsigned short last_reg;/* Last register command */
  	spinlock_t reg_lock;
  
  	int dram_checked;

  	struct snd_card *card;		/* The card that this belongs to */

  
  	int chorus_mode;
  	int reverb_mode;
  	int bass_level;
  	int treble_level;

  	struct snd_util_memhdr *memhdr;

  
  	spinlock_t control_lock;

  	struct snd_kcontrol *controls[EMU8000_NUM_CONTROLS];

  	struct snd_pcm *pcm; /* pcm on emu8000 wavetable */

  };

  
  /* sequencer device id */
  #define SNDRV_SEQ_DEV_ID_EMU8000	"emu8000-synth"
  
  
  /* exported functions */

  int snd_emu8000_new(struct snd_card *card, int device, long port, int seq_ports,
  		    struct snd_seq_device **ret);
  void snd_emu8000_poke(struct snd_emu8000 *emu, unsigned int port, unsigned int reg,

  		      unsigned int val);

  unsigned short snd_emu8000_peek(struct snd_emu8000 *emu, unsigned int port,

  				unsigned int reg);

  void snd_emu8000_poke_dw(struct snd_emu8000 *emu, unsigned int port, unsigned int reg,

  			 unsigned int val);

  unsigned int snd_emu8000_peek_dw(struct snd_emu8000 *emu, unsigned int port,

  				 unsigned int reg);

  void snd_emu8000_dma_chan(struct snd_emu8000 *emu, int ch, int mode);

  void snd_emu8000_init_fm(struct snd_emu8000 *emu);

  void snd_emu8000_update_chorus_mode(struct snd_emu8000 *emu);
  void snd_emu8000_update_reverb_mode(struct snd_emu8000 *emu);
  void snd_emu8000_update_equalizer(struct snd_emu8000 *emu);
  int snd_emu8000_load_chorus_fx(struct snd_emu8000 *emu, int mode, const void __user *buf, long len);
  int snd_emu8000_load_reverb_fx(struct snd_emu8000 *emu, int mode, const void __user *buf, long len);

  
  #endif /* __SOUND_EMU8000_H */