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scc.h
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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ /* $Id: scc.h,v 1.29 1997/04/02 14:56:45 jreuter Exp jreuter $ */ #ifndef _SCC_H #define _SCC_H #include <linux/sockios.h> /* selection of hardware types */ #define PA0HZP 0x00 /* hardware type for PA0HZP SCC card and compatible */ #define EAGLE 0x01 /* hardware type for EAGLE card */ #define PC100 0x02 /* hardware type for PC100 card */ #define PRIMUS 0x04 /* hardware type for PRIMUS-PC (DG9BL) card */ #define DRSI 0x08 /* hardware type for DRSI PC*Packet card */ #define BAYCOM 0x10 /* hardware type for BayCom (U)SCC */ /* DEV ioctl() commands */ enum SCC_ioctl_cmds { SIOCSCCRESERVED = SIOCDEVPRIVATE, SIOCSCCCFG, SIOCSCCINI, SIOCSCCCHANINI, SIOCSCCSMEM, SIOCSCCGKISS, SIOCSCCSKISS, SIOCSCCGSTAT, SIOCSCCCAL }; /* Device parameter control (from WAMPES) */ enum L1_params { PARAM_DATA, PARAM_TXDELAY, PARAM_PERSIST, PARAM_SLOTTIME, PARAM_TXTAIL, PARAM_FULLDUP, PARAM_SOFTDCD, /* was: PARAM_HW */ PARAM_MUTE, /* ??? */ PARAM_DTR, PARAM_RTS, PARAM_SPEED, PARAM_ENDDELAY, /* ??? */ PARAM_GROUP, PARAM_IDLE, PARAM_MIN, PARAM_MAXKEY, PARAM_WAIT, PARAM_MAXDEFER, PARAM_TX, PARAM_HWEVENT = 31, PARAM_RETURN = 255 /* reset kiss mode */ }; /* fulldup parameter */ enum FULLDUP_modes { KISS_DUPLEX_HALF, /* normal CSMA operation */ KISS_DUPLEX_FULL, /* fullduplex, key down trx after transmission */ KISS_DUPLEX_LINK, /* fullduplex, key down trx after 'idletime' sec */ KISS_DUPLEX_OPTIMA /* fullduplex, let the protocol layer control the hw */ }; /* misc. parameters */ #define TIMER_OFF 65535U /* to switch off timers */ #define NO_SUCH_PARAM 65534U /* param not implemented */ /* HWEVENT parameter */ enum HWEVENT_opts { HWEV_DCD_ON, HWEV_DCD_OFF, HWEV_ALL_SENT }; /* channel grouping */ #define RXGROUP 0100 /* if set, only tx when all channels clear */ #define TXGROUP 0200 /* if set, don't transmit simultaneously */ /* Tx/Rx clock sources */ enum CLOCK_sources { CLK_DPLL, /* normal halfduplex operation */ CLK_EXTERNAL, /* external clocking (G3RUH/DF9IC modems) */ CLK_DIVIDER, /* Rx = DPLL, Tx = divider (fullduplex with */ /* modems without clock regeneration */ CLK_BRG /* experimental fullduplex mode with DPLL/BRG for */ /* MODEMs without clock recovery */ }; /* Tx state */ enum TX_state { TXS_IDLE, /* Transmitter off, no data pending */ TXS_BUSY, /* waiting for permission to send / tailtime */ TXS_ACTIVE, /* Transmitter on, sending data */ TXS_NEWFRAME, /* reset CRC and send (next) frame */ TXS_IDLE2, /* Transmitter on, no data pending */ TXS_WAIT, /* Waiting for Mintime to expire */ TXS_TIMEOUT /* We had a transmission timeout */ }; typedef unsigned long io_port; /* type definition for an 'io port address' */ /* SCC statistical information */ struct scc_stat { long rxints; /* Receiver interrupts */ long txints; /* Transmitter interrupts */ long exints; /* External/status interrupts */ long spints; /* Special receiver interrupts */ long txframes; /* Packets sent */ long rxframes; /* Number of Frames Actually Received */ long rxerrs; /* CRC Errors */ long txerrs; /* KISS errors */ unsigned int nospace; /* "Out of buffers" */ unsigned int rx_over; /* Receiver Overruns */ unsigned int tx_under; /* Transmitter Underruns */ unsigned int tx_state; /* Transmitter state */ int tx_queued; /* tx frames enqueued */ unsigned int maxqueue; /* allocated tx_buffers */ unsigned int bufsize; /* used buffersize */ }; struct scc_modem { long speed; /* Line speed, bps */ char clocksrc; /* 0 = DPLL, 1 = external, 2 = divider */ char nrz; /* NRZ instead of NRZI */ }; struct scc_kiss_cmd { int command; /* one of the KISS-Commands defined above */ unsigned param; /* KISS-Param */ }; struct scc_hw_config { io_port data_a; /* data port channel A */ io_port ctrl_a; /* control port channel A */ io_port data_b; /* data port channel B */ io_port ctrl_b; /* control port channel B */ io_port vector_latch; /* INTACK-Latch (#) */ io_port special; /* special function port */ int irq; /* irq */ long clock; /* clock */ char option; /* command for function port */ char brand; /* hardware type */ char escc; /* use ext. features of a 8580/85180/85280 */ }; /* (#) only one INTACK latch allowed. */ struct scc_mem_config { unsigned int dummy; unsigned int bufsize; }; struct scc_calibrate { unsigned int time; unsigned char pattern; }; #endif /* _SCC_H */