1/* 2 * generic_serial.h 3 * 4 * Copyright (C) 1998 R.E.Wolff@BitWizard.nl 5 * 6 * written for the SX serial driver. 7 * Contains the code that should be shared over all the serial drivers. 8 * 9 * Version 0.1 -- December, 1998. 10 */ 11 12#ifndef GENERIC_SERIAL_H 13#define GENERIC_SERIAL_H 14 15#ifdef __KERNEL__ 16#include <linux/mutex.h> 17#include <linux/tty.h> 18 19struct real_driver { 20 void (*disable_tx_interrupts) (void *); 21 void (*enable_tx_interrupts) (void *); 22 void (*disable_rx_interrupts) (void *); 23 void (*enable_rx_interrupts) (void *); 24 void (*shutdown_port) (void*); 25 int (*set_real_termios) (void*); 26 int (*chars_in_buffer) (void*); 27 void (*close) (void*); 28 void (*hungup) (void*); 29 void (*getserial) (void*, struct serial_struct *sp); 30}; 31 32 33 34struct gs_port { 35 int magic; 36 struct tty_port port; 37 unsigned char *xmit_buf; 38 int xmit_head; 39 int xmit_tail; 40 int xmit_cnt; 41 struct mutex port_write_mutex; 42 unsigned long event; 43 unsigned short closing_wait; 44 int close_delay; 45 struct real_driver *rd; 46 int wakeup_chars; 47 int baud_base; 48 int baud; 49 int custom_divisor; 50 spinlock_t driver_lock; 51}; 52 53#endif /* __KERNEL__ */ 54 55/* Flags */ 56/* Warning: serial.h defines some ASYNC_ flags, they say they are "only" 57 used in serial.c, but they are also used in all other serial drivers. 58 Make sure they don't clash with these here... */ 59#define GS_TX_INTEN 0x00800000 60#define GS_RX_INTEN 0x00400000 61#define GS_ACTIVE 0x00200000 62 63 64 65#define GS_TYPE_NORMAL 1 66 67#define GS_DEBUG_FLUSH 0x00000001 68#define GS_DEBUG_BTR 0x00000002 69#define GS_DEBUG_TERMIOS 0x00000004 70#define GS_DEBUG_STUFF 0x00000008 71#define GS_DEBUG_CLOSE 0x00000010 72#define GS_DEBUG_FLOW 0x00000020 73#define GS_DEBUG_WRITE 0x00000040 74 75#ifdef __KERNEL__ 76int gs_put_char(struct tty_struct *tty, unsigned char ch); 77int gs_write(struct tty_struct *tty, 78 const unsigned char *buf, int count); 79int gs_write_room(struct tty_struct *tty); 80int gs_chars_in_buffer(struct tty_struct *tty); 81void gs_flush_buffer(struct tty_struct *tty); 82void gs_flush_chars(struct tty_struct *tty); 83void gs_stop(struct tty_struct *tty); 84void gs_start(struct tty_struct *tty); 85void gs_hangup(struct tty_struct *tty); 86int gs_block_til_ready(void *port, struct file *filp); 87void gs_close(struct tty_struct *tty, struct file *filp); 88void gs_set_termios (struct tty_struct * tty, 89 struct ktermios * old_termios); 90int gs_init_port(struct gs_port *port); 91int gs_setserial(struct gs_port *port, struct serial_struct __user *sp); 92int gs_getserial(struct gs_port *port, struct serial_struct __user *sp); 93void gs_got_break(struct gs_port *port); 94#endif /* __KERNEL__ */ 95#endif 96