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 18struct real_driver { 19 void (*disable_tx_interrupts) (void *); 20 void (*enable_tx_interrupts) (void *); 21 void (*disable_rx_interrupts) (void *); 22 void (*enable_rx_interrupts) (void *); 23 int (*get_CD) (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 unsigned char *xmit_buf; 37 int xmit_head; 38 int xmit_tail; 39 int xmit_cnt; 40 struct mutex port_write_mutex; 41 int flags; 42 wait_queue_head_t open_wait; 43 wait_queue_head_t close_wait; 44 int count; 45 int blocked_open; 46 struct tty_struct *tty; 47 unsigned long event; 48 unsigned short closing_wait; 49 int close_delay; 50 struct real_driver *rd; 51 int wakeup_chars; 52 int baud_base; 53 int baud; 54 int custom_divisor; 55 spinlock_t driver_lock; 56}; 57 58#endif /* __KERNEL__ */ 59 60/* Flags */ 61/* Warning: serial.h defines some ASYNC_ flags, they say they are "only" 62 used in serial.c, but they are also used in all other serial drivers. 63 Make sure they don't clash with these here... */ 64#define GS_TX_INTEN 0x00800000 65#define GS_RX_INTEN 0x00400000 66#define GS_ACTIVE 0x00200000 67 68 69 70#define GS_TYPE_NORMAL 1 71 72#define GS_DEBUG_FLUSH 0x00000001 73#define GS_DEBUG_BTR 0x00000002 74#define GS_DEBUG_TERMIOS 0x00000004 75#define GS_DEBUG_STUFF 0x00000008 76#define GS_DEBUG_CLOSE 0x00000010 77#define GS_DEBUG_FLOW 0x00000020 78#define GS_DEBUG_WRITE 0x00000040 79 80#ifdef __KERNEL__ 81void gs_put_char(struct tty_struct *tty, unsigned char ch); 82int gs_write(struct tty_struct *tty, 83 const unsigned char *buf, int count); 84int gs_write_room(struct tty_struct *tty); 85int gs_chars_in_buffer(struct tty_struct *tty); 86void gs_flush_buffer(struct tty_struct *tty); 87void gs_flush_chars(struct tty_struct *tty); 88void gs_stop(struct tty_struct *tty); 89void gs_start(struct tty_struct *tty); 90void gs_hangup(struct tty_struct *tty); 91int gs_block_til_ready(void *port, struct file *filp); 92void gs_close(struct tty_struct *tty, struct file *filp); 93void gs_set_termios (struct tty_struct * tty, 94 struct ktermios * old_termios); 95int gs_init_port(struct gs_port *port); 96int gs_setserial(struct gs_port *port, struct serial_struct __user *sp); 97int gs_getserial(struct gs_port *port, struct serial_struct __user *sp); 98void gs_got_break(struct gs_port *port); 99#endif /* __KERNEL__ */ 100#endif 101