arch/um/drivers/chan.h

Source file repositories/reference/linux-study-clean/arch/um/drivers/chan.h

File Facts

System
Linux kernel
Corpus path
arch/um/drivers/chan.h
Extension
.h
Size
1487 bytes
Lines
50
Domain
Architecture Layer
Bucket
arch/um
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

struct chan {
	struct list_head list;
	struct list_head free_list;
	struct line *line;
	char *dev;
	unsigned int primary:1;
	unsigned int input:1;
	unsigned int output:1;
	unsigned int opened:1;
	unsigned int enabled:1;
	int fd_in;
	int fd_out; /* only different to fd_in if blocking output is needed */
	const struct chan_ops *ops;
	void *data;
};

extern void chan_interrupt(struct line *line, int irq);
extern int parse_chan_pair(char *str, struct line *line, int device,
			   const struct chan_opts *opts, char **error_out);
extern int write_chan(struct chan *chan, const u8 *buf, size_t len,
			     int write_irq);
extern int console_write_chan(struct chan *chan, const char *buf, 
			      int len);
extern int console_open_chan(struct line *line, struct console *co);
extern void deactivate_chan(struct chan *chan, int irq);
extern void chan_enable_winch(struct chan *chan, struct tty_port *port);
extern int enable_chan(struct line *line);
extern void close_chan(struct line *line);
extern int chan_window_size(struct line *line, 
			     unsigned short *rows_out, 
			     unsigned short *cols_out);
extern int chan_config_string(struct line *line, char *str, int size,
			      char **error_out);

#endif

Annotation

Implementation Notes