| /* $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) */ |
