31f35939d1
This is the first step to generalising the various pieces of waiting logic duplicated in all sorts of serial drivers. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
95 lines
3 KiB
C
95 lines
3 KiB
C
/*
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* generic_serial.h
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*
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* Copyright (C) 1998 R.E.Wolff@BitWizard.nl
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*
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* written for the SX serial driver.
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* Contains the code that should be shared over all the serial drivers.
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*
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* Version 0.1 -- December, 1998.
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*/
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#ifndef GENERIC_SERIAL_H
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#define GENERIC_SERIAL_H
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#ifdef __KERNEL__
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#include <linux/mutex.h>
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#include <linux/tty.h>
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struct real_driver {
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void (*disable_tx_interrupts) (void *);
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void (*enable_tx_interrupts) (void *);
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void (*disable_rx_interrupts) (void *);
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void (*enable_rx_interrupts) (void *);
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void (*shutdown_port) (void*);
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int (*set_real_termios) (void*);
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int (*chars_in_buffer) (void*);
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void (*close) (void*);
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void (*hungup) (void*);
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void (*getserial) (void*, struct serial_struct *sp);
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};
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struct gs_port {
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int magic;
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struct tty_port port;
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unsigned char *xmit_buf;
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int xmit_head;
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int xmit_tail;
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int xmit_cnt;
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struct mutex port_write_mutex;
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unsigned long event;
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unsigned short closing_wait;
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int close_delay;
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struct real_driver *rd;
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int wakeup_chars;
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int baud_base;
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int baud;
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int custom_divisor;
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spinlock_t driver_lock;
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};
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#endif /* __KERNEL__ */
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/* Flags */
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/* Warning: serial.h defines some ASYNC_ flags, they say they are "only"
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used in serial.c, but they are also used in all other serial drivers.
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Make sure they don't clash with these here... */
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#define GS_TX_INTEN 0x00800000
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#define GS_RX_INTEN 0x00400000
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#define GS_ACTIVE 0x00200000
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#define GS_TYPE_NORMAL 1
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#define GS_DEBUG_FLUSH 0x00000001
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#define GS_DEBUG_BTR 0x00000002
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#define GS_DEBUG_TERMIOS 0x00000004
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#define GS_DEBUG_STUFF 0x00000008
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#define GS_DEBUG_CLOSE 0x00000010
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#define GS_DEBUG_FLOW 0x00000020
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#define GS_DEBUG_WRITE 0x00000040
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#ifdef __KERNEL__
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int gs_put_char(struct tty_struct *tty, unsigned char ch);
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int gs_write(struct tty_struct *tty,
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const unsigned char *buf, int count);
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int gs_write_room(struct tty_struct *tty);
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int gs_chars_in_buffer(struct tty_struct *tty);
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void gs_flush_buffer(struct tty_struct *tty);
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void gs_flush_chars(struct tty_struct *tty);
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void gs_stop(struct tty_struct *tty);
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void gs_start(struct tty_struct *tty);
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void gs_hangup(struct tty_struct *tty);
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int gs_block_til_ready(void *port, struct file *filp);
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void gs_close(struct tty_struct *tty, struct file *filp);
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void gs_set_termios (struct tty_struct * tty,
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struct ktermios * old_termios);
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int gs_init_port(struct gs_port *port);
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int gs_setserial(struct gs_port *port, struct serial_struct __user *sp);
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int gs_getserial(struct gs_port *port, struct serial_struct __user *sp);
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void gs_got_break(struct gs_port *port);
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#endif /* __KERNEL__ */
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#endif
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