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