include/uapi/linux/scc.h

   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 /* $Id: scc.h,v 1.29 1997/04/02 14:56:45 jreuter Exp jreuter $ */
   3
   4 #ifndef _UAPI_SCC_H
   5 #define _UAPI_SCC_H
   6
   7 #include <linux/sockios.h>
   8
   9 /* selection of hardware types */
  10
  11 #define PA0HZP          0x00    /* hardware type for PA0HZP SCC card and compatible */
  12 #define EAGLE           0x01    /* hardware type for EAGLE card */
  13 #define PC100           0x02    /* hardware type for PC100 card */
  14 #define PRIMUS          0x04    /* hardware type for PRIMUS-PC (DG9BL) card */
  15 #define DRSI            0x08    /* hardware type for DRSI PC*Packet card */
  16 #define BAYCOM          0x10    /* hardware type for BayCom (U)SCC */
  17
  18 /* DEV ioctl() commands */
  19
  20 enum SCC_ioctl_cmds {
  21         SIOCSCCRESERVED = SIOCDEVPRIVATE,
  22         SIOCSCCCFG,
  23         SIOCSCCINI,
  24         SIOCSCCCHANINI,
  25         SIOCSCCSMEM,
  26         SIOCSCCGKISS,
  27         SIOCSCCSKISS,
  28         SIOCSCCGSTAT,
  29         SIOCSCCCAL
  30 };
  31
  32 /* Device parameter control (from WAMPES) */
  33
  34 enum L1_params {
  35         PARAM_DATA,
  36         PARAM_TXDELAY,
  37         PARAM_PERSIST,
  38         PARAM_SLOTTIME,
  39         PARAM_TXTAIL,
  40         PARAM_FULLDUP,
  41         PARAM_SOFTDCD,          /* was: PARAM_HW */
  42         PARAM_MUTE,             /* ??? */
  43         PARAM_DTR,
  44         PARAM_RTS,
  45         PARAM_SPEED,
  46         PARAM_ENDDELAY,         /* ??? */
  47         PARAM_GROUP,
  48         PARAM_IDLE,
  49         PARAM_MIN,
  50         PARAM_MAXKEY,
  51         PARAM_WAIT,
  52         PARAM_MAXDEFER,
  53         PARAM_TX,
  54         PARAM_HWEVENT = 31,
  55         PARAM_RETURN = 255      /* reset kiss mode */
  56 };
  57
  58 /* fulldup parameter */
  59
  60 enum FULLDUP_modes {
  61         KISS_DUPLEX_HALF,       /* normal CSMA operation */
  62         KISS_DUPLEX_FULL,       /* fullduplex, key down trx after transmission */
  63         KISS_DUPLEX_LINK,       /* fullduplex, key down trx after 'idletime' sec */
  64         KISS_DUPLEX_OPTIMA      /* fullduplex, let the protocol layer control the hw */
  65 };
  66
  67 /* misc. parameters */
  68
  69 #define TIMER_OFF       65535U  /* to switch off timers */
  70 #define NO_SUCH_PARAM   65534U  /* param not implemented */
  71
  72 /* HWEVENT parameter */
  73
  74 enum HWEVENT_opts {
  75         HWEV_DCD_ON,
  76         HWEV_DCD_OFF,
  77         HWEV_ALL_SENT
  78 };
  79
  80 /* channel grouping */
  81
  82 #define RXGROUP         0100    /* if set, only tx when all channels clear */
  83 #define TXGROUP         0200    /* if set, don't transmit simultaneously */
  84
  85 /* Tx/Rx clock sources */
  86
  87 enum CLOCK_sources {
  88         CLK_DPLL,       /* normal halfduplex operation */
  89         CLK_EXTERNAL,   /* external clocking (G3RUH/DF9IC modems) */
  90         CLK_DIVIDER,    /* Rx = DPLL, Tx = divider (fullduplex with */
  91                         /* modems without clock regeneration */
  92         CLK_BRG         /* experimental fullduplex mode with DPLL/BRG for */
  93                         /* MODEMs without clock recovery */
  94 };
  95
  96 /* Tx state */
  97
  98 enum TX_state {
  99         TXS_IDLE,       /* Transmitter off, no data pending */
 100         TXS_BUSY,       /* waiting for permission to send / tailtime */
 101         TXS_ACTIVE,     /* Transmitter on, sending data */
 102         TXS_NEWFRAME,   /* reset CRC and send (next) frame */
 103         TXS_IDLE2,      /* Transmitter on, no data pending */
 104         TXS_WAIT,       /* Waiting for Mintime to expire */
 105         TXS_TIMEOUT     /* We had a transmission timeout */
 106 };
 107
 108 typedef unsigned long io_port;  /* type definition for an 'io port address' */
 109
 110 /* SCC statistical information */
 111
 112 struct scc_stat {
 113         long rxints;            /* Receiver interrupts */
 114         long txints;            /* Transmitter interrupts */
 115         long exints;            /* External/status interrupts */
 116         long spints;            /* Special receiver interrupts */
 117
 118         long txframes;          /* Packets sent */
 119         long rxframes;          /* Number of Frames Actually Received */
 120         long rxerrs;            /* CRC Errors */
 121         long txerrs;            /* KISS errors */
 122
 123         unsigned int nospace;   /* "Out of buffers" */
 124         unsigned int rx_over;   /* Receiver Overruns */
 125         unsigned int tx_under;  /* Transmitter Underruns */
 126
 127         unsigned int tx_state;  /* Transmitter state */
 128         int tx_queued;          /* tx frames enqueued */
 129
 130         unsigned int maxqueue;  /* allocated tx_buffers */
 131         unsigned int bufsize;   /* used buffersize */
 132 };
 133
 134 struct scc_modem {
 135         long speed;             /* Line speed, bps */
 136         char clocksrc;          /* 0 = DPLL, 1 = external, 2 = divider */
 137         char nrz;               /* NRZ instead of NRZI */
 138 };
 139
 140 struct scc_kiss_cmd {
 141         int      command;       /* one of the KISS-Commands defined above */
 142         unsigned param;         /* KISS-Param */
 143 };
 144
 145 struct scc_hw_config {
 146         io_port data_a;         /* data port channel A */
 147         io_port ctrl_a;         /* control port channel A */
 148         io_port data_b;         /* data port channel B */
 149         io_port ctrl_b;         /* control port channel B */
 150         io_port vector_latch;   /* INTACK-Latch (#) */
 151         io_port special;        /* special function port */
 152
 153         int     irq;            /* irq */
 154         long    clock;          /* clock */
 155         char    option;         /* command for function port */
 156
 157         char brand;             /* hardware type */
 158         char escc;              /* use ext. features of a 8580/85180/85280 */
 159 };
 160
 161 /* (#) only one INTACK latch allowed. */
 162
 163
 164 struct scc_mem_config {
 165         unsigned int dummy;
 166         unsigned int bufsize;
 167 };
 168
 169 struct scc_calibrate {
 170         unsigned int time;
 171         unsigned char pattern;
 172 };
 173
 174 #endif /* _UAPI_SCC_H */