dist/ntp/kernel/sys/bsd_audioirig.h

   1 /*      $NetBSD$        */
   2
   3 /*
   4  *      $Header: bsd_audioirig.h,v 1.0 93/08/02 12:42:00
   5  */
   6
   7 #ifndef _BSD_AUDIOIRIG_H_
   8 #define _BSD_AUDIOIRIG_H_
   9
  10 #include <sys/time.h>
  11
  12 /********************************************************************/
  13 /* user interface */
  14
  15 /*
  16  * irig ioctls
  17  */
  18 #if defined(__STDC__) || (!defined(sun) && !defined(ibm032) && !defined(__GNUC))
  19 #define AUDIO_IRIG_OPEN         _IO('A', 50)
  20 #define AUDIO_IRIG_CLOSE        _IO('A', 51)
  21 #define AUDIO_IRIG_SETFORMAT    _IOWR('A', 52, int)
  22 #else
  23 #define AUDIO_IRIG_OPEN         _IO(A, 50)
  24 #define AUDIO_IRIG_CLOSE        _IO(A, 51)
  25 #define AUDIO_IRIG_SETFORMAT    _IOWR(A, 52, int)
  26 #endif
  27
  28 /*
  29  * irig error codes
  30  */
  31 #define AUDIO_IRIG_BADSIGNAL    0x01
  32 #define AUDIO_IRIG_BADDATA      0x02
  33 #define AUDIO_IRIG_BADSYNC      0x04
  34 #define AUDIO_IRIG_BADCLOCK     0x08
  35 #define AUDIO_IRIG_OLDDATA      0x10
  36
  37 /********************************************************************/
  38
  39 /*
  40  * auib definitions
  41  */
  42 #define AUIB_SIZE       (0x0040)
  43 #define AUIB_INC        (0x0008)
  44 #define AUIB_MOD(k)     ((k) & 0x0038)
  45 #define AUIB_INIT(ib)   ((ib)->ib_head = (ib)->ib_tail = (ib)->ib_lock = \
  46                          (ib)->phase = (ib)->shi = (ib)->slo = (ib)->high = \
  47                          (ib)->level0 = (ib)->level1 = \
  48                          (ib)->shift[0] = (ib)->shift[1] = (ib)->shift[2] = \
  49                          (ib)->shift[3] = (ib)->sdata[0] = (ib)->sdata[1] = \
  50                          (ib)->sdata[2] = (ib)->sdata[3] = (ib)->err = 0)
  51 #define AUIB_EMPTY(ib)  ((ib)->ib_head == (ib)->ib_tail)
  52 #define AUIB_LEN(ib)    (AUIB_MOD((ib)->ib_tail - (ib)->ib_head))
  53 #define AUIB_LEFT(ib)   (AUIB_MOD((ib)->ib_head - (ib)->ib_tail - 1))
  54 #define IRIGDELAY 3
  55 #define IRIGLEVEL 1355
  56
  57 #ifndef LOCORE
  58 /*
  59  * irig_time holds IRIG data for one second
  60  */
  61 struct irig_time {
  62         struct timeval  stamp;          /* timestamp */
  63         u_char  bits[13];               /* 100 irig data bits */
  64         u_char  status;                 /* status byte */
  65         char    time[14];               /* time string */
  66 };
  67
  68 /*
  69  * auib's are used for IRIG data communication between the trap
  70  * handler and the software interrupt.
  71  */
  72 struct auib {
  73         /* driver variables */
  74         u_short active;                 /* 0=inactive, else=active */
  75         u_short format;                 /* time output format */
  76         struct  irig_time timestr;      /* time structure */
  77         char    buffer[14];             /* output formation buffer */
  78
  79         /* hardware interrupt variables */
  80         struct  timeval tv1,tv2,tv3;    /* time stamps (median filter) */
  81         int     level0,level1;          /* lo/hi input levels */
  82         int     level;                  /* decision level */
  83         int     high;                   /* recent largest sample */
  84         int     sl0,sl1;                /* recent sample levels */
  85         int     lasts;                  /* last sample value */
  86         u_short scount;                 /* sample count */
  87         u_long  eacc;                   /* 10-bit element accumulator */
  88         u_long  ebit;                   /* current bit in element */
  89         u_char  r_level,mmr1;           /* recording level 0-255 */
  90         int     shi,slo,phase;          /* AGC variables */
  91         u_long  err;                    /* error status bits */
  92         int     ecount;                 /* count of elements this second */
  93         long    shift[4];               /* shift register of pos ident */
  94         long    sdata[4];               /* shift register of symbols */
  95
  96         int     ib_head;                /* queue head */
  97         int     ib_tail;                /* queue tail */
  98         u_short ib_lock;                /* queue head lock */
  99         u_long  ib_data[AUIB_SIZE];     /* data buffer */
 100 };
 101 #endif
 102
 103 #endif /* _BSD_AUDIOIRIG_H_ */