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/*
* 6pack.h Define the 6pack device driver interface and constants.
*
* NOTE: THIS FILE WILL BE MOVED TO THE LINUX INCLUDE DIRECTORY
* AS SOON AS POSSIBLE!
*
* Version: @(#)6pack.h 0.3.0 04/07/98
*
* Fixes:
*
* Author: Andreas Könsgen <ajk@iehk.rwth-aachen.de>
*
* This file is derived from slip.h, written by
* Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org>
*/
#ifndef _LINUX_6PACK_H
#define _LINUX_6PACK_H
#define SIXPACK_VERSION "Revision: 0.3.0"
#ifdef __KERNEL__
/* sixpack priority commands */
#define SIXP_SEOF 0x40 /* start and end of a 6pack frame */
#define SIXP_TX_URUN 0x48 /* transmit overrun */
#define SIXP_RX_ORUN 0x50 /* receive overrun */
#define SIXP_RX_BUF_OVL 0x58 /* receive buffer overflow */
#define SIXP_CHKSUM 0xFF /* valid checksum of a 6pack frame */
/* masks to get certain bits out of the status bytes sent by the TNC */
#define SIXP_CMD_MASK 0xC0
#define SIXP_CHN_MASK 0x07
#define SIXP_PRIO_CMD_MASK 0x80
#define SIXP_STD_CMD_MASK 0x40
#define SIXP_PRIO_DATA_MASK 0x38
#define SIXP_TX_MASK 0x20
#define SIXP_RX_MASK 0x10
#define SIXP_RX_DCD_MASK 0x18
#define SIXP_LEDS_ON 0x78
#define SIXP_LEDS_OFF 0x60
#define SIXP_CON 0x08
#define SIXP_STA 0x10
#define SIXP_FOUND_TNC 0xe9
#define SIXP_CON_ON 0x68
#define SIXP_DCD_MASK 0x08
#define SIXP_DAMA_OFF 0
/* default level 2 parameters */
#define SIXP_TXDELAY 25 /* in 10 ms */
#define SIXP_PERSIST 50 /* in 256ths */
#define SIXP_SLOTTIME 10 /* in 10 ms */
#define SIXP_INIT_RESYNC_TIMEOUT 150 /* in 10 ms */
#define SIXP_RESYNC_TIMEOUT 500 /* in 10 ms */
/* 6pack configuration. */
#define SIXP_NRUNIT 256 /* MAX number of 6pack channels */
#define SIXP_MTU 256 /* Default MTU */
enum sixpack_flags {
SIXPF_INUSE, /* Channel in use */
SIXPF_ERROR, /* Parity, etc. error */
};
struct sixpack {
int magic;
/* Various fields. */
struct tty_struct *tty; /* ptr to TTY structure */
struct device *dev; /* easy for intr handling */
/* These are pointers to the malloc()ed frame buffers. */
unsigned char *rbuff; /* receiver buffer */
int rcount; /* received chars counter */
unsigned char *xbuff; /* transmitter buffer */
unsigned char *xhead; /* pointer to next byte to XMIT */
int xleft; /* bytes left in XMIT queue */
unsigned char raw_buf[4];
unsigned char cooked_buf[400];
unsigned int rx_count;
unsigned int rx_count_cooked;
/* 6pack interface statistics. */
unsigned long rx_packets; /* inbound frames counter */
unsigned long tx_packets; /* outbound frames counter */
unsigned long rx_bytes; /* inbound bytes counter */
unsigned long tx_bytes; /* outboud bytes counter */
unsigned long rx_errors; /* Parity, etc. errors */
unsigned long tx_errors; /* Planned stuff */
unsigned long rx_dropped; /* No memory for skb */
unsigned long tx_dropped; /* When MTU change */
unsigned long rx_over_errors; /* Frame bigger then 6pack buf. */
/* Detailed 6pack statistics. */
int mtu; /* Our mtu (to spot changes!) */
int buffsize; /* Max buffers sizes */
unsigned char flags; /* Flag values/ mode etc */
unsigned char mode; /* 6pack mode */
/* 6pack stuff */
unsigned char tx_delay;
unsigned char persistance;
unsigned char slottime;
unsigned char duplex;
unsigned char led_state;
unsigned char status;
unsigned char status1;
unsigned char status2;
unsigned char tx_enable;
unsigned char tnc_ok;
/* unsigned char retval; */
struct timer_list tx_t;
struct timer_list resync_t;
}; /* struct sixpack */
/* should later be moved to include/net/ax25.h */
#define AX25_6PACK_HEADER_LEN 0
#define SIXPACK_MAGIC 0x5304
extern int sixpack_init(struct device *dev);
#endif
#endif /* _LINUX_6PACK.H */
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