generic_serial.h
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上传日期：2009-04-28
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- /*
- * generic_serial.h
- *
- * Copyright (C) 1998 R.E.Wolff@BitWizard.nl
- *
- * written for the SX serial driver.
- * Contains the code that should be shared over all the serial drivers.
- *
- * Version 0.1 -- December, 1998.
- */
- #ifndef GENERIC_SERIAL_H
- #define GENERIC_SERIAL_H
- struct real_driver {
- void (*disable_tx_interrupts) (void *);
- void (*enable_tx_interrupts) (void *);
- void (*disable_rx_interrupts) (void *);
- void (*enable_rx_interrupts) (void *);
- int (*get_CD) (void *);
- void (*shutdown_port) (void*);
- int (*set_real_termios) (void*);
- int (*chars_in_buffer) (void*);
- void (*close) (void*);
- void (*hungup) (void*);
- void (*getserial) (void*, struct serial_struct *sp);
- };
- struct gs_port {
- int magic;
- unsigned char *xmit_buf;
- int xmit_head;
- int xmit_tail;
- int xmit_cnt;
- struct semaphore port_write_sem;
- int flags;
- wait_queue_head_t open_wait;
- wait_queue_head_t close_wait;
- int count;
- int blocked_open;
- struct tty_struct *tty;
- unsigned long event;
- unsigned short closing_wait;
- int close_delay;
- struct real_driver *rd;
- int wakeup_chars;
- int baud_base;
- int baud;
- int custom_divisor;
- spinlock_t driver_lock;
- };
- /* Flags */
- /* Warning: serial.h defines some ASYNC_ flags, they say they are "only"
- used in serial.c, but they are also used in all other serial drivers.
- Make sure they don't clash with these here... */
- #define GS_TX_INTEN 0x00800000
- #define GS_RX_INTEN 0x00400000
- #define GS_ACTIVE 0x00200000
- #define GS_TYPE_NORMAL 1
- #define GS_DEBUG_FLUSH 0x00000001
- #define GS_DEBUG_BTR 0x00000002
- #define GS_DEBUG_TERMIOS 0x00000004
- #define GS_DEBUG_STUFF 0x00000008
- #define GS_DEBUG_CLOSE 0x00000010
- #define GS_DEBUG_FLOW 0x00000020
- #define GS_DEBUG_WRITE 0x00000040
- void gs_put_char(struct tty_struct *tty, unsigned char ch);
- int gs_write(struct tty_struct *tty,
- const unsigned char *buf, int count);
- int gs_write_room(struct tty_struct *tty);
- int gs_chars_in_buffer(struct tty_struct *tty);
- void gs_flush_buffer(struct tty_struct *tty);
- void gs_flush_chars(struct tty_struct *tty);
- void gs_stop(struct tty_struct *tty);
- void gs_start(struct tty_struct *tty);
- void gs_hangup(struct tty_struct *tty);
- int gs_block_til_ready(void *port, struct file *filp);
- void gs_close(struct tty_struct *tty, struct file *filp);
- void gs_set_termios (struct tty_struct * tty,
- struct termios * old_termios);
- int gs_init_port(struct gs_port *port);
- int gs_setserial(struct gs_port *port, struct serial_struct __user *sp);
- int gs_getserial(struct gs_port *port, struct serial_struct __user *sp);
- void gs_got_break(struct gs_port *port);
- #endif
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