diff options
Diffstat (limited to 'include/linux/scc.h')
| -rw-r--r-- | include/linux/scc.h | 253 |
1 files changed, 253 insertions, 0 deletions
diff --git a/include/linux/scc.h b/include/linux/scc.h new file mode 100644 index 00000000000..885a4a02b23 --- /dev/null +++ b/include/linux/scc.h @@ -0,0 +1,253 @@ +/* $Id: scc.h,v 1.29 1997/04/02 14:56:45 jreuter Exp jreuter $ */ + +#ifndef _SCC_H +#define _SCC_H + +#include <linux/config.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; +}; + +#ifdef __KERNEL__ + +enum {TX_OFF, TX_ON}; /* command for scc_key_trx() */ + +/* Vector masks in RR2B */ + +#define VECTOR_MASK 0x06 +#define TXINT 0x00 +#define EXINT 0x02 +#define RXINT 0x04 +#define SPINT 0x06 + +#ifdef CONFIG_SCC_DELAY +#define Inb(port) inb_p(port) +#define Outb(port, val) outb_p(val, port) +#else +#define Inb(port) inb(port) +#define Outb(port, val) outb(val, port) +#endif + +/* SCC channel control structure for KISS */ + +struct scc_kiss { + unsigned char txdelay; /* Transmit Delay 10 ms/cnt */ + unsigned char persist; /* Persistence (0-255) as a % */ + unsigned char slottime; /* Delay to wait on persistence hit */ + unsigned char tailtime; /* Delay after last byte written */ + unsigned char fulldup; /* Full Duplex mode 0=CSMA 1=DUP 2=ALWAYS KEYED */ + unsigned char waittime; /* Waittime before any transmit attempt */ + unsigned int maxkeyup; /* Maximum time to transmit (seconds) */ + unsigned int mintime; /* Minimal offtime after MAXKEYUP timeout (seconds) */ + unsigned int idletime; /* Maximum idle time in ALWAYS KEYED mode (seconds) */ + unsigned int maxdefer; /* Timer for CSMA channel busy limit */ + unsigned char tx_inhibit; /* Transmit is not allowed when set */ + unsigned char group; /* Group ID for AX.25 TX interlocking */ + unsigned char mode; /* 'normal' or 'hwctrl' mode (unused) */ + unsigned char softdcd; /* Use DPLL instead of DCD pin for carrier detect */ +}; + + +/* SCC channel structure */ + +struct scc_channel { + int init; /* channel exists? */ + + struct net_device *dev; /* link to device control structure */ + struct net_device_stats dev_stat;/* device statistics */ + + char brand; /* manufacturer of the board */ + long clock; /* used clock */ + + io_port ctrl; /* I/O address of CONTROL register */ + io_port data; /* I/O address of DATA register */ + io_port special; /* I/O address of special function port */ + int irq; /* Number of Interrupt */ + + char option; + char enhanced; /* Enhanced SCC support */ + + unsigned char wreg[16]; /* Copy of last written value in WRx */ + unsigned char status; /* Copy of R0 at last external interrupt */ + unsigned char dcd; /* DCD status */ + + struct scc_kiss kiss; /* control structure for KISS params */ + struct scc_stat stat; /* statistical information */ + struct scc_modem modem; /* modem information */ + + struct sk_buff_head tx_queue; /* next tx buffer */ + struct sk_buff *rx_buff; /* pointer to frame currently received */ + struct sk_buff *tx_buff; /* pointer to frame currently transmitted */ + + /* Timer */ + struct timer_list tx_t; /* tx timer for this channel */ + struct timer_list tx_wdog; /* tx watchdogs */ + + /* Channel lock */ + spinlock_t lock; /* Channel guard lock */ +}; + +#endif /* defined(__KERNEL__) */ +#endif /* defined(_SCC_H) */ |