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 struct real_driver { 16 void (*disable_tx_interrupts) (void *); 17 void (*enable_tx_interrupts) (void *); 18 void (*disable_rx_interrupts) (void *); 19 void (*enable_rx_interrupts) (void *); 20 int (*get_CD) (void *); 21 void (*shutdown_port) (void*); 22 int (*set_real_termios) (void*); 23 int (*chars_in_buffer) (void*); 24 void (*close) (void*); 25 void (*hungup) (void*); 26 void (*getserial) (void*, struct serial_struct *sp); 27 }; 28 29 30 31 struct gs_port { 32 int magic; 33 unsigned char *xmit_buf; 34 int xmit_head; 35 int xmit_tail; 36 int xmit_cnt; 37 /* struct semaphore port_write_sem; */ 38 int flags; 39 struct termios normal_termios; 40 struct termios callout_termios; 41 wait_queue_head_t open_wait; 42 wait_queue_head_t close_wait; 43 long session; 44 long pgrp; 45 int count; 46 int blocked_open; 47 struct tty_struct *tty; 48 int event; 49 unsigned short closing_wait; 50 int close_delay; 51 struct real_driver *rd; 52 int wakeup_chars; 53 int baud_base; 54 int baud; 55 int custom_divisor; 56 }; 57 58 59 /* Flags */ 60 /* Warning: serial.h defines some ASYNC_ flags, they say they are "only" 61 used in serial.c, but they are also used in all other serial drivers. 62 Make sure they don't clash with these here... */ 63 #define GS_TX_INTEN 0x00800000 64 #define GS_RX_INTEN 0x00400000 65 #define GS_ACTIVE 0x00200000 66 67 68 69 #define GS_TYPE_NORMAL 1 70 #define GS_TYPE_CALLOUT 2 71 72 73 #define GS_DEBUG_FLUSH 0x00000001 74 #define GS_DEBUG_BTR 0x00000002 75 #define GS_DEBUG_TERMIOS 0x00000004 76 #define GS_DEBUG_STUFF 0x00000008 77 #define GS_DEBUG_CLOSE 0x00000010 78 #define GS_DEBUG_FLOW 0x00000020 79 80 81 void gs_put_char(struct tty_struct *tty, unsigned char ch); 82 int gs_write(struct tty_struct *tty, int from_user, 83 const unsigned char *buf, int count); 84 int gs_write_room(struct tty_struct *tty); 85 int gs_chars_in_buffer(struct tty_struct *tty); 86 void gs_flush_buffer(struct tty_struct *tty); 87 void gs_flush_chars(struct tty_struct *tty); 88 void gs_stop(struct tty_struct *tty); 89 void gs_start(struct tty_struct *tty); 90 void gs_hangup(struct tty_struct *tty); 91 void gs_do_softint(void *private_); 92 int gs_block_til_ready(void *port, struct file *filp); 93 void gs_close(struct tty_struct *tty, struct file *filp); 94 void gs_set_termios (struct tty_struct * tty, 95 struct termios * old_termios); 96 int gs_init_port(struct gs_port *port); 97 int gs_setserial(struct gs_port *port, struct serial_struct *sp); 98 int gs_getserial(struct gs_port *port, struct serial_struct *sp); 99 void gs_got_break(struct gs_port *port); 100 101 #endif 102