ADD file via upload

include/linux/tty.h

@@ -0,0 +1,77 @@
+/*
+ * 'tty.h' defines some structures used by tty_io.c and some defines.
+ *
+ * NOTE! Don't touch this without checking that nothing in rs_io.s or
+ * con_io.s breaks. Some constants are hardwired into the system (mainly
+ * offsets into 'tty_queue'
+ */
+
+#ifndef _TTY_H
+#define _TTY_H
+
+#include <termios.h>
+
+#define TTY_BUF_SIZE 1024
+
+struct tty_queue {
+	unsigned long data;
+	unsigned long head;
+	unsigned long tail;
+	struct task_struct * proc_list;
+	char buf[TTY_BUF_SIZE];
+};
+
+#define INC(a) ((a) = ((a)+1) & (TTY_BUF_SIZE-1))
+#define DEC(a) ((a) = ((a)-1) & (TTY_BUF_SIZE-1))
+#define EMPTY(a) ((a).head == (a).tail)
+#define LEFT(a) (((a).tail-(a).head-1)&(TTY_BUF_SIZE-1))
+#define LAST(a) ((a).buf[(TTY_BUF_SIZE-1)&((a).head-1)])
+#define FULL(a) (!LEFT(a))
+#define CHARS(a) (((a).head-(a).tail)&(TTY_BUF_SIZE-1))
+#define GETCH(queue,c) \
+(void)({c=(queue).buf[(queue).tail];INC((queue).tail);})
+#define PUTCH(c,queue) \
+(void)({(queue).buf[(queue).head]=(c);INC((queue).head);})
+
+#define INTR_CHAR(tty) ((tty)->termios.c_cc[VINTR])
+#define QUIT_CHAR(tty) ((tty)->termios.c_cc[VQUIT])
+#define ERASE_CHAR(tty) ((tty)->termios.c_cc[VERASE])
+#define KILL_CHAR(tty) ((tty)->termios.c_cc[VKILL])
+#define EOF_CHAR(tty) ((tty)->termios.c_cc[VEOF])
+#define START_CHAR(tty) ((tty)->termios.c_cc[VSTART])
+#define STOP_CHAR(tty) ((tty)->termios.c_cc[VSTOP])
+#define SUSPEND_CHAR(tty) ((tty)->termios.c_cc[VSUSP])
+
+struct tty_struct {
+	struct termios termios;
+	int pgrp;
+	int stopped;
+	void (*write)(struct tty_struct * tty);
+	struct tty_queue read_q;
+	struct tty_queue write_q;
+	struct tty_queue secondary;
+	};
+
+extern struct tty_struct tty_table[];
+
+/*	intr=^C		quit=^|		erase=del	kill=^U
+	eof=^D		vtime=\0	vmin=\1		sxtc=\0
+	start=^Q	stop=^S		susp=^Z		eol=\0
+	reprint=^R	discard=^U	werase=^W	lnext=^V
+	eol2=\0
+*/
+#define INIT_C_CC "\003\034\177\025\004\0\1\0\021\023\032\0\022\017\027\026\0"
+
+void rs_init(void);
+void con_init(void);
+void tty_init(void);
+
+int tty_read(unsigned c, char * buf, int n);
+int tty_write(unsigned c, char * buf, int n);
+
+void rs_write(struct tty_struct * tty);
+void con_write(struct tty_struct * tty);
+
+void copy_to_cooked(struct tty_struct * tty);
+
+#endif