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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
/* 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 */