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/* $Id: scc.h,v 1.29 1997/04/02 14:56:45 jreuter Exp jreuter $ */
#ifndef _SCC_H
#define _SCC_H
#include <uapi/linux/scc.h>
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(_SCC_H) */