text: /*
   * file: sbcard.h
   * $FreeBSD: src/sys/dev/sound/isa/sb.h,v 1.15 2004/05/13 11:32:54 truckman Exp $
   * $DragonFly: src/sys/dev/sound/isa/sb.h,v 1.3 2007/01/04 21:47:02 corecode Exp $
   */
  
  #ifndef SB_H
  #define SB_H
  
  struct sbc_softc;
  void sbc_lock(struct sbc_softc *);
  void sbc_lockassert(struct sbc_softc *);
  void sbc_unlock(struct sbc_softc *);
  
  /*
   * sound blaster registers
   */
  
  #define SBDSP_RST	0x6
  #define DSP_READ	0xA
  #define DSP_WRITE	0xC
  #define SBDSP_CMD	0xC
  #define SBDSP_STATUS	0xC
  #define DSP_DATA_AVAIL	0xE
  #define DSP_DATA_AVL16	0xF
  
  #define SB_MIX_ADDR	0x4
  #define SB_MIX_DATA	0x5
  #if 0
  #define OPL3_LEFT	(io_base + 0x0)
  #define OPL3_RIGHT	(io_base + 0x2)
  #define OPL3_BOTH	(io_base + 0x8)
  #endif
  
  /*
   * DSP Commands. There are many, and in many cases they are used explicitly
   */
  
  /* these are not used except for programmed I/O (not in this driver) */
  #define	DSP_DAC8		0x10	/* direct DAC output */
  #define	DSP_ADC8		0x20	/* direct ADC input */
  
  /* these should be used in the SB 1.0 */
  #define	DSP_CMD_DAC8		0x14	/* single cycle 8-bit dma out */
  #define	DSP_CMD_ADC8		0x24	/* single cycle 8-bit dma in */
  
  /* these should be used in the SB 2.0 and 2.01 */
  #define	DSP_CMD_DAC8_AUTO	0x1c	/* auto 8-bit dma out */
  #define	DSP_CMD_ADC8_AUTO	0x2c	/* auto 8-bit dma out */
  
  #define	DSP_CMD_HSSIZE		0x48	/* high speed dma count */
  #define	DSP_CMD_HSDAC_AUTO	0x90	/* high speed dac, auto */
  #define DSP_CMD_HSADC_AUTO      0x98    /* high speed adc, auto */
  
  /* SBPro commands. Some cards (JAZZ, SMW) also support 16 bits */
  
  	/* prepare for dma input */
  #define	DSP_CMD_DMAMODE(stereo, bit16) (0xA0 | (stereo ? 8:0) | (bit16 ? 4:0))
  
  #define	DSP_CMD_DAC2		0x16	/* 2-bit adpcm dma out (cont) */
  #define	DSP_CMD_DAC2S		0x17	/* 2-bit adpcm dma out (start) */
  
  #define	DSP_CMD_DAC2S_AUTO	0x1f	/* auto 2-bit adpcm dma out (start) */
  
  
  /* SB16 commands */
  #define	DSP_CMD_O16		0xb0
  #define	DSP_CMD_I16		0xb8
  #define	DSP_CMD_O8		0xc0
  #define	DSP_CMD_I8		0xc8
  
  #define	DSP_MODE_U8MONO		0x00
  #define	DSP_MODE_U8STEREO	0x20
  #define	DSP_MODE_S16MONO	0x10
  #define	DSP_MODE_S16STEREO	0x30
  
  #define DSP_CMD_SPKON		0xD1
  #define DSP_CMD_SPKOFF		0xD3
  #define DSP_CMD_SPKR(on)	(0xD1 | (on ? 0:2))
  
  #define	DSP_CMD_DMAPAUSE_8	0xD0
  #define	DSP_CMD_DMAPAUSE_16	0xD5
  #define	DSP_CMD_DMAEXIT_8	0xDA
  #define	DSP_CMD_DMAEXIT_16	0xD9
  #define	DSP_CMD_TCONST		0x40	/* set time constant */
  #define	DSP_CMD_HSDAC		0x91	/* high speed dac */
  #define DSP_CMD_HSADC           0x99    /* high speed adc */
  
  #define	DSP_CMD_GETVER		0xE1
  #define	DSP_CMD_GETID		0xE7	/* return id bytes */
  
  
  #define	DSP_CMD_OUT16		0x41	/* send parms for dma out on sb16 */
  #define	DSP_CMD_IN16		0x42	/* send parms for dma in on sb16 */
  #if 0 /*** unknown ***/
  #define	DSP_CMD_FA		0xFA	/* get version from prosonic*/
  #define	DSP_CMD_FB		0xFB	/* set irq/dma for prosonic*/
  #endif
  
  /*
   * in fact, for the SB16, dma commands are as follows:
   *
   *  cmd, mode, len_low, len_high.
   *
   * cmd is a combination of DSP_DMA16 or DSP_DMA8 and
   */
  
  #define	DSP_DMA16		0xb0
  #define	DSP_DMA8		0xc0
  #   define DSP_F16_DAC		0x00
  #   define DSP_F16_ADC		0x08
  #   define DSP_F16_AUTO		0x04
  #   define DSP_F16_FIFO_ON	0x02
  
  /*
   * mode is a combination of the following:
   */
  #define DSP_F16_STEREO	0x20
  #define DSP_F16_SIGNED	0x10
  
  #define IMODE_NONE		0
  #define IMODE_OUTPUT		PCM_ENABLE_OUTPUT
  #define IMODE_INPUT		PCM_ENABLE_INPUT
  #define IMODE_INIT		3
  #define IMODE_MIDI		4
  
  #define NORMAL_MIDI	0
  #define UART_MIDI	1
  
  /*
   * values used for bd_flags in SoundBlaster driver
   */
  #define	BD_F_HISPEED	0x0001	/* doing high speed ... */
  
  #if 0
  #define	BD_F_JAZZ16	0x0002	/* jazz16 detected */
  #define	BD_F_JAZZ16_2	0x0004	/* jazz16 type 2 */
  #endif
  
  #define	BD_F_DUP_MIDI	0x0008	/* duplex midi */
  
  #define	BD_F_MIX_MASK	0x0070	/* up to 8 mixers (I know of 3) */
  #define	BD_F_MIX_CT1335	0x0010	/* CT1335		*/
  #define	BD_F_MIX_CT1345	0x0020	/* CT1345		*/
  #define	BD_F_MIX_CT1745	0x0030	/* CT1745		*/
  
  #define	BD_F_SB16	0x0100	/* this is a SB16 */
  #define	BD_F_SB16X	0x0200	/* this is a vibra16X or clone */
  #if 0
  #define	BD_F_MIDIBUSY	0x0400	/* midi busy */
  #endif
  #define	BD_F_ESS	0x0800	/* this is an ESS chip */
  #define BD_F_DMARUN	0x2000
  #define BD_F_DMARUN2	0x4000
  
  /*
   * Mixer registers of SB Pro
   */
  #define VOC_VOL		0x04
  #define MIC_VOL		0x0A
  #define MIC_MIX		0x0A
  #define RECORD_SRC	0x0C
  #define IN_FILTER	0x0C
  #define OUT_FILTER	0x0E
  #define MASTER_VOL	0x22
  #define FM_VOL		0x26
  #define CD_VOL		0x28
  #define LINE_VOL	0x2E
  #define IRQ_NR		0x80
  #define DMA_NR		0x81
  #define IRQ_STAT	0x82
  
  /*
   * Additional registers on the SG NX Pro
   */
  #define COVOX_VOL	0x42
  #define TREBLE_LVL	0x44
  #define BASS_LVL	0x46
  
  #define FREQ_HI         (1 << 3)/* Use High-frequency ANFI filters */
  #define FREQ_LOW        0	/* Use Low-frequency ANFI filters */
  #define FILT_ON         0	/* Yes, 0 to turn it on, 1 for off */
  #define FILT_OFF        (1 << 5)
  
  #define MONO_DAC	0x00
  #define STEREO_DAC	0x02
  
  /*
   * Mixer registers of SB16
   */
  #define SB16_IMASK_L	0x3d
  #define SB16_IMASK_R	0x3e
  #define SB16_OMASK	0x3c
  #endif
  