audio_config.h

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    1 /* 
    2  * Mach Operating System
    3  * Copyright (c) 1992 Carnegie Mellon University
    4  * All Rights Reserved.
    5  * 
    6  * Permission to use, copy, modify and distribute this software and its
    7  * documentation is hereby granted, provided that both the copyright
    8  * notice and this permission notice appear in all copies of the
    9  * software, derivative works or modified versions, and any portions
   10  * thereof, and that both notices appear in supporting documentation.
   11  * 
   12  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
   13  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
   14  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
   15  * 
   16  * Carnegie Mellon requests users of this software to return to
   17  * 
   18  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
   19  *  School of Computer Science
   20  *  Carnegie Mellon University
   21  *  Pittsburgh PA 15213-3890
   22  * 
   23  * any improvements or extensions that they make and grant Carnegie Mellon
   24  * the rights to redistribute these changes.
   25  */
   26 /*
   27  * HISTORY
   28  * $Log:        audio_config.h,v $
   29  * Revision 2.3  93/03/26  17:59:52  mrt
   30  *      Don't define by default the register map.
   31  * 
   32  * 
   33  * Revision 2.2  93/03/18  10:37:01  mrt
   34  *      Created.
   35  *      [93/03/17  21:38:48  af]
   36  * 
   37  */
   38 
   39 /*
   40  *  Here platform specific code to define sample_t & co
   41  *  [to cope with weird DMA engines], and other customs
   42  */
   43 #ifdef  FLAMINGO
   44 #define splaudio        splbio
   45 #define sample_t        unsigned char   /* later */
   46 #define samples_to_chars        bcopy
   47 #define chars_to_samples        bcopy
   48 /* Sparse space ! */
   49 typedef struct {
   50         volatile unsigned long  cr;     /* command register (wo) */
   51 /*#define ir cr                         /* interrupt register (ro) */
   52         volatile unsigned long  dr;     /* data register (rw) */
   53         volatile unsigned long  dsr1;   /* D-channel status register 1 (ro) */
   54         volatile unsigned long  der;    /* D-channel error register (ro) */
   55         volatile unsigned long  dctb;   /* D-channel transmit register (wo) */
   56 /*#define dcrb dctb                     /* D-channel receive register (ro) */
   57         volatile unsigned long  bbtb;   /* Bb-channel transmit register (wo) */
   58 /*#define bbrb bbtb                     /* Bb-channel receive register (ro) */
   59         volatile unsigned long  bctb;   /* Bc-channel transmit register (wo)*/
   60 /*#define bcrb bctb                     /* Bc-channel receive register (ro) */
   61         volatile unsigned long  dsr2;   /* D-channel status register 2 (ro) */
   62 } amd79c30_padded_regs_t;
   63 
   64 /* give the chip 400ns in between accesses */
   65 #define read_reg(r,v)                           \
   66         { (v) = ((r) >> 8) & 0xff; delay(1); }
   67 
   68 #define write_reg(r,v)                          \
   69         { (r) = (((v) & 0xff) << 8) |           \
   70                  0x200000000L; /*bytemask*/     \
   71                 delay(1); wbflush();            \
   72         }
   73 
   74 /* Write 16 bits of data from variable v to the data port of the audio chip */
   75 #define WAMD16(regs, v)                         \
   76         { write_reg((regs)->dr,v);              \
   77           write_reg((regs)->dr,v>>8); }
   78 
   79 #define mb() wbflush()
   80 
   81 #endif  /* FLAMINGO */
   82 
   83 
   84 #ifdef  MAXINE
   85 #define splaudio        splhigh
   86 typedef struct {
   87         volatile unsigned char  cr;     /* command register (wo) */
   88 /*#define ir cr                         /* interrupt register (ro) */
   89         char                            pad0[63];
   90         volatile unsigned char  dr;     /* data register (rw) */
   91         char                            pad1[63];
   92         volatile unsigned char  dsr1;   /* D-channel status register 1 (ro) */
   93         char                            pad2[63];
   94         volatile unsigned char  der;    /* D-channel error register (ro) */
   95         char                            pad3[63];
   96         volatile unsigned char  dctb;   /* D-channel transmit register (wo) */
   97 /*#define dcrb dctb                     /* D-channel receive register (ro) */
   98         char                            pad4[63];
   99         volatile unsigned char  bbtb;   /* Bb-channel transmit register (wo) */
  100 /*#define bbrb bbtb                     /* Bb-channel receive register (ro) */
  101         char                            pad5[63];
  102         volatile unsigned char  bctb;   /* Bc-channel transmit register (wo)*/
  103 /*#define bcrb bctb                     /* Bc-channel receive register (ro) */
  104         char                            pad6[63];
  105         volatile unsigned char  dsr2;   /* D-channel status register 2 (ro) */
  106         char                            pad7[63];
  107 } amd79c30_padded_regs_t;
  108 
  109 /* give the chip 400ns in between accesses */
  110 #define read_reg(r,v)                           \
  111         { (v) = (r); delay(1); }
  112 
  113 #define write_reg(r,v)                          \
  114         { (r) = (v); delay(1); wbflush(); }
  115 
  116 /* Write 16 bits of data from variable v to the data port of the audio chip */
  117 #define WAMD16(regs, v)                         \
  118         { write_reg((regs)->dr,v);              \
  119           write_reg((regs)->dr,v>>8); }
  120 
  121 #define mb()
  122 
  123 #endif  /* MAXINE */
  124 
  125 
  126 #ifndef sample_t
  127 #define sample_t        unsigned char
  128 #define samples_to_chars        bcopy
  129 #define chars_to_samples        bcopy
  130 #endif
  131 
  132 /*
  133  * More architecture-specific customizations
  134  */
  135 #ifdef  alpha
  136 #define sample_rpt_int(x)       (((x)<<24)|((x)<<16)|((x)<<8)|((x)<<0))
  137 #define sample_rpt_long(x)      ((sample_rpt_int(x)<<32)|sample_rpt_int(x))
  138 #endif
  139 
  140 #ifndef sample_rpt_long
  141 #define sample_rpt_long(x)      (((x)<<24)|((x)<<16)|((x)<<8)|((x)<<0))
  142 #endif
  143

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FreeBSD/Linux Kernel Cross Reference sys/chips/audio_config.h

FreeBSD/Linux Kernel Cross Reference
sys/chips/audio_config.h