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 19 struct 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 34 struct 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__ 76 int gs_put_char(struct tty_struct *tty, unsigned char ch); 77 int gs_write(struct tty_struct *tty, 78 const unsigned char *buf, int count); 79 int gs_write_room(struct tty_struct *tty); 80 int gs_chars_in_buffer(struct tty_struct *tty); 81 void gs_flush_buffer(struct tty_struct *tty); 82 void gs_flush_chars(struct tty_struct *tty); 83 void gs_stop(struct tty_struct *tty); 84 void gs_start(struct tty_struct *tty); 85 void gs_hangup(struct tty_struct *tty); 86 int gs_block_til_ready(void *port, struct file *filp); 87 void gs_close(struct tty_struct *tty, struct file *filp); 88 void gs_set_termios (struct tty_struct * tty, 89 struct ktermios * old_termios); 90 int gs_init_port(struct gs_port *port); 91 int gs_setserial(struct gs_port *port, struct serial_struct __user *sp); 92 int gs_getserial(struct gs_port *port, struct serial_struct __user *sp); 93 void gs_got_break(struct gs_port *port); 94 #endif /* __KERNEL__ */ 95 #endif 96