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essvar.h revision 1.8 
      1 /*
      2  * Copyright 1997
      3  * Digital Equipment Corporation. All rights reserved.
      4  *
      5  * This software is furnished under license and may be used and
      6  * copied only in accordance with the following terms and conditions.
      7  * Subject to these conditions, you may download, copy, install,
      8  * use, modify and distribute this software in source and/or binary
      9  * form. No title or ownership is transferred hereby.
     10  *
     11  * 1) Any source code used, modified or distributed must reproduce
     12  *    and retain this copyright notice and list of conditions as
     13  *    they appear in the source file.
     14  *
     15  * 2) No right is granted to use any trade name, trademark, or logo of
     16  *    Digital Equipment Corporation. Neither the "Digital Equipment
     17  *    Corporation" name nor any trademark or logo of Digital Equipment
     18  *    Corporation may be used to endorse or promote products derived
     19  *    from this software without the prior written permission of
     20  *    Digital Equipment Corporation.
     21  *
     22  * 3) This software is provided "AS-IS" and any express or implied
     23  *    warranties, including but not limited to, any implied warranties
     24  *    of merchantability, fitness for a particular purpose, or
     25  *    non-infringement are disclaimed. In no event shall DIGITAL be
     26  *    liable for any damages whatsoever, and in particular, DIGITAL
     27  *    shall not be liable for special, indirect, consequential, or
     28  *    incidental damages or damages for lost profits, loss of
     29  *    revenue or loss of use, whether such damages arise in contract,
     30  *    negligence, tort, under statute, in equity, at law or otherwise,
     31  *    even if advised of the possibility of such damage.
     32  */
     33 
     34 /*
     35 ** @(#) $RCSfile: essvar.h,v $ $Revision: 1.8 $ (SHARK) $Date: 1998/08/10 20:24:26 $
     36 **
     37 **++
     38 **
     39 **  essvar.h
     40 **
     41 **  FACILITY:
     42 **
     43 **	DIGITAL Network Appliance Reference Design (DNARD)
     44 **
     45 **  MODULE DESCRIPTION:
     46 **
     47 **      This module contains the structure definitions and function
     48 **      prototypes for the ESS Technologies 1887/888 sound chip
     49 **      driver.
     50 **
     51 **  AUTHORS:
     52 **
     53 **	Blair Fidler	Software Engineering Australia
     54 **			Gold Coast, Australia.
     55 **
     56 **  CREATION DATE:
     57 **
     58 **	May 12, 1997.
     59 **
     60 **  MODIFICATION HISTORY:
     61 **
     62 **--
     63 */
     64 #define ESS_DAC_PLAY_VOL	0
     65 #define ESS_MIC_PLAY_VOL	1
     66 #define ESS_LINE_PLAY_VOL	2
     67 #define ESS_SYNTH_PLAY_VOL	3
     68 #define ESS_CD_PLAY_VOL		4
     69 #define ESS_AUXB_PLAY_VOL	5
     70 #define ESS_INPUT_CLASS		6
     71 
     72 #define ESS_MASTER_VOL		7
     73 #define ESS_PCSPEAKER_VOL	8
     74 #define ESS_OUTPUT_CLASS	9
     75 
     76 #define ESS_DAC_REC_VOL		10
     77 #define ESS_MIC_REC_VOL		11
     78 #define ESS_LINE_REC_VOL	12
     79 #define ESS_SYNTH_REC_VOL	13
     80 #define ESS_CD_REC_VOL		14
     81 #define ESS_AUXB_REC_VOL	15
     82 #define ESS_MIC_PREAMP		16
     83 #define ESS_RECORD_VOL		17
     84 #define	ESS_RECORD_SOURCE	18
     85 #define ESS_RECORD_CLASS	19
     86 
     87 #define ESS_RECORD_MONITOR	20
     88 #define ESS_MONITOR_CLASS	21
     89 
     90 #define ESS_NDEVS		22
     91 
     92 struct ess_audio_channel
     93 {
     94 	int	drq;			/* DMA channel */
     95 #define IS16BITDRQ(drq) ((drq) >= 4)
     96 	int	irq;			/* IRQ line for this DMA channel */
     97 	int	ist;
     98 	void	*ih;			/* interrupt vectoring */
     99 	u_long	nintr;			/* number of interrupts taken */
    100 	void	(*intr)__P((void*));	/* ISR for DMA complete */
    101 	void	*arg;			/* arg for intr() */
    102 
    103 #ifdef DIAGNOSTIC
    104 	/* Status information */
    105 	int	active;			/* boolean: channel in use? */
    106 #endif
    107 };
    108 
    109 struct ess_softc
    110 {
    111 	struct	device sc_dev;		/* base device */
    112 	struct	isadev sc_id;		/* ISA device */
    113 	isa_chipset_tag_t sc_ic;
    114 	bus_space_tag_t sc_iot;		/* tag */
    115 	bus_space_handle_t sc_ioh;	/* handle */
    116 
    117 	int	sc_iobase;		/* I/O port base address */
    118 
    119 	u_short	sc_open;		/* reference count of open calls */
    120 
    121 	u_char	gain[ESS_NDEVS][2];	/* kept in input levels */
    122 #define ESS_LEFT 0
    123 #define ESS_RIGHT 1
    124 
    125 	u_int	out_port;		/* output port */
    126 	u_int	in_mask;		/* input ports */
    127 	u_int	in_port;		/* XXX needed for MI interface */
    128 
    129 	u_int	spkr_state;		/* non-null is on */
    130 
    131 	struct ess_audio_channel sc_in; /* audio channel for record */
    132 	struct ess_audio_channel sc_out;/* audio channel for playback */
    133 
    134 	u_int	sc_model;
    135 #define ESS_UNSUPPORTED 0
    136 #define ESS_1888	1
    137 #define ESS_1887	2
    138 #define ESS_888		3
    139 
    140 	u_int	sc_version;		/* Legacy ES688/ES1688 ID */
    141 };
    142 
    143 int	essmatch __P((struct ess_softc *));
    144 void	essattach __P((struct ess_softc *));
    145 
    146