Linux驱动开发杂记(0x18) - 内核tty接口各版本的变化(二)之tty_driver.h

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2.6.17 - 2.6.18

删除

struct tty_driver {const char      *devfs_name;
}

2.6.19 - 2.6.20

修改

struct tty_operations {void (*set_termios)(struct tty_struct *tty, struct termios * old);
//改为	void (*set_termios)(struct tty_struct *tty, struct ktermios * old);
}

struct tty_driver {struct termios init_termios; /* Initial termios *///改为	struct ktermios init_termios; /* Initial termios */struct termios **termios;struct termios **termios_locked;//改为	struct ktermios **termios;struct ktermios **termios_locked;void (*set_termios)(struct tty_struct *tty, struct termios * old);//改为	void (*set_termios)(struct tty_struct *tty, struct ktermios * old);
}

2.6.21 - 2.6.22

添加

struct tty_operations {long (*compat_ioctl)(struct tty_struct *tty, struct file * file,unsigned int cmd, unsigned long arg);
}

struct tty_driver {long (*compat_ioctl)(struct tty_struct *tty, struct file * file,unsigned int cmd, unsigned long arg);
}

2.6.25 - 2.6.26

添加

extern struct tty_driver *tty_find_polling_driver(char *name, int *line);

struct tty_driver {const struct tty_operations *ops;
}

修改

struct tty_operations {void (*put_char)(struct tty_struct *tty, unsigned char ch);//改为int  (*put_char)(struct tty_struct *tty, unsigned char ch);
}

struct tty_driver {long (*compat_ioctl)(struct tty_struct *tty, struct file * file,unsigned int cmd, unsigned long arg);
}

删除

struct tty_operations {int (*write_proc)(struct file *file, const char __user *buffer,unsigned long count, void *data);
}

struct tty_driver {int  (*open)(struct tty_struct * tty, struct file * filp);void (*close)(struct tty_struct * tty, struct file * filp);int  (*write)(struct tty_struct * tty,const unsigned char *buf, int count);void (*put_char)(struct tty_struct *tty, unsigned char ch);void (*flush_chars)(struct tty_struct *tty);int  (*write_room)(struct tty_struct *tty);int  (*chars_in_buffer)(struct tty_struct *tty);int  (*ioctl)(struct tty_struct *tty, struct file * file,unsigned int cmd, unsigned long arg);long (*compat_ioctl)(struct tty_struct *tty, struct file * file,unsigned int cmd, unsigned long arg);void (*set_termios)(struct tty_struct *tty, struct ktermios * old);void (*throttle)(struct tty_struct * tty);void (*unthrottle)(struct tty_struct * tty);void (*stop)(struct tty_struct *tty);void (*start)(struct tty_struct *tty);void (*hangup)(struct tty_struct *tty);void (*break_ctl)(struct tty_struct *tty, int state);void (*flush_buffer)(struct tty_struct *tty);void (*set_ldisc)(struct tty_struct *tty);void (*wait_until_sent)(struct tty_struct *tty, int timeout);void (*send_xchar)(struct tty_struct *tty, char ch);int (*read_proc)(char *page, char **start, off_t off,int count, int *eof, void *data);int (*write_proc)(struct file *file, const char __user *buffer,unsigned long count, void *data);int (*tiocmget)(struct tty_struct *tty, struct file *file);int (*tiocmset)(struct tty_struct *tty, struct file *file,unsigned int set, unsigned int clear);
}

2.6.26 - 2.6.27

添加

struct tty_operations {int (*resize)(struct tty_struct *tty, struct tty_struct *real_tty, struct winsize *ws);
}

修改

struct tty_operations {	void (*break_ctl)(struct tty_struct *tty, int state);
//改为int (*break_ctl)(struct tty_struct *tty, int state);
}

2.6.29 - 2.6.30

添加

struct tty_operations {struct tty_struct * (*lookup)(struct tty_driver *driver, struct inode *inode, int idx);int  (*install)(struct tty_driver *driver, struct tty_struct *tty);void (*remove)(struct tty_driver *driver, struct tty_struct *tty);void (*shutdown)(struct tty_struct *tty);int (*set_termiox)(struct tty_struct *tty, struct termiox *tnew);
}

struct tty_driver {struct kref kref;       /* Reference management */
}

extern void tty_driver_kref_put(struct tty_driver *driver);
extern inline struct tty_driver *tty_driver_kref_get(struct tty_driver *d);

删除

struct tty_driver {int     refcount;       /* for loadable tty drivers */
}

2.6.28 - 2.6.29

修改

struct tty_operations {int (*resize)(struct tty_struct *tty, struct tty_struct *real_tty, unsigned int rows, unsigned int cols);int (*resize)(struct tty_struct *tty, struct winsize *ws);
}

2.6.29 - 2.6.30

添加

struct tty_operations {const struct file_operations *proc_fops;
}

删除

struct tty_operations {int (*read_proc)(char *page, char **start, off_t off, int count, int *eof, void *data);}

2.6.31 - 2.6.32

添加

struct tty_operations {void (*cleanup)(struct tty_struct *tty);
}

2.6.36 - 2.6.37

添加

struct tty_operations {int (*get_icount)(struct tty_struct *tty, struct serial_icounter_struct *icount);
}

2.6.38 - 2.6.39

//修改

struct tty_operations {int  (*ioctl)(struct tty_struct *tty, struct file * file, unsigned int cmd, unsigned long arg);// 改为int  (*ioctl)(struct tty_struct *tty, unsigned int cmd, unsigned long arg);long (*compat_ioctl)(struct tty_struct *tty, struct file * file,unsigned int cmd, unsigned long arg);// 改为long (*compat_ioctl)(struct tty_struct *tty,unsigned int cmd, unsigned long arg);int (*tiocmget)(struct tty_struct *tty, struct file *file);int (*tiocmset)(struct tty_struct *tty, struct file *file,unsigned int set, unsigned int clear);// 改为int (*tiocmget)(struct tty_struct *tty);int (*tiocmset)(struct tty_struct *tty, unsigned int set, unsigned int clear);
}                        

3.2 - 3.3

删除

struct tty_driver {......struct ktermios **termios_locked;......
}

3.3 - 3.4

删除

struct tty_driver {......int     minor_num;      /* number of *possible* devices */......
}

3.6 - 3.7

添加

struct tty_driver {......struct tty_port **ports;......
}

#define tty_alloc_driver(lines, flags)

修改

struct tty_driver {......struct cdev cdev;// 改为struct cdev *cdevs;......
}

4.2 - 4.3

修改

struct tty_driver {......struct cdev *cdevs;// 改为struct cdev **cdevs;......
}

4.5 - 4.6

修改

struct tty_operations {......struct tty_struct * (*lookup)(struct tty_driver *self, int idx);// 改为struct tty_struct * (*lookup)(struct tty_driver *self, struct file *, int idx);......
}

struct tty_struct * (*lookup)(struct tty_driver *self, int idx)
struct tty_struct * (*lookup)(struct tty_driver *self, struct file *, int idx)

4.13 - 4.14

添加

struct tty_operations {......void (*show_fdinfo)(struct tty_struct *tty, struct seq_file *m);......
}

4.17 - 4.18

添加

struct tty_operations {......int (*proc_show)(struct seq_file *, void *);......
}

删除

struct tty_operations {......const struct file_operations *proc_fops;......
}

4.19 - 4.20

添加

struct tty_operations {......int  (*get_serial)(struct tty_struct *tty, struct serial_struct *p);int  (*set_serial)(struct tty_struct *tty, struct serial_struct *p);......
}

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