diff --git a/include/linux/serial.h b/include/linux/serial.h
new file mode 100644
index 0000000..0014582
--- /dev/null
+++ b/include/linux/serial.h
@@ -0,0 +1,188 @@
+/*
+ * include/linux/serial.h
+ *
+ * Copyright (C) 1992 by Theodore Ts'o.
+ * 
+ * Redistribution of this file is permitted under the terms of the GNU 
+ * Public License (GPL)
+ */
+
+#ifndef _LINUX_SERIAL_H
+#define _LINUX_SERIAL_H
+
+#ifdef __KERNEL__
+#include <asm/page.h>
+
+/*
+ * Counters of the input lines (CTS, DSR, RI, CD) interrupts
+ */
+
+struct async_icount {
+	__u32	cts, dsr, rng, dcd, tx, rx;
+	__u32	frame, parity, overrun, brk;
+	__u32	buf_overrun;
+};
+
+/*
+ * The size of the serial xmit buffer is 1 page, or 4096 bytes
+ */
+#define SERIAL_XMIT_SIZE PAGE_SIZE
+
+#endif
+
+struct serial_struct {
+	int	type;
+	int	line;
+	unsigned int	port;
+	int	irq;
+	int	flags;
+	int	xmit_fifo_size;
+	int	custom_divisor;
+	int	baud_base;
+	unsigned short	close_delay;
+	char	io_type;
+	char	reserved_char[1];
+	int	hub6;
+	unsigned short	closing_wait; /* time to wait before closing */
+	unsigned short	closing_wait2; /* no longer used... */
+	unsigned char	*iomem_base;
+	unsigned short	iomem_reg_shift;
+	unsigned int	port_high;
+	unsigned long	iomap_base;	/* cookie passed into ioremap */
+};
+
+/*
+ * For the close wait times, 0 means wait forever for serial port to
+ * flush its output.  65535 means don't wait at all.
+ */
+#define ASYNC_CLOSING_WAIT_INF	0
+#define ASYNC_CLOSING_WAIT_NONE	65535
+
+/*
+ * These are the supported serial types.
+ */
+#define PORT_UNKNOWN	0
+#define PORT_8250	1
+#define PORT_16450	2
+#define PORT_16550	3
+#define PORT_16550A	4
+#define PORT_CIRRUS     5	/* usurped by cyclades.c */
+#define PORT_16650	6
+#define PORT_16650V2	7
+#define PORT_16750	8
+#define PORT_STARTECH	9	/* usurped by cyclades.c */
+#define PORT_16C950	10	/* Oxford Semiconductor */
+#define PORT_16654	11
+#define PORT_16850	12
+#define PORT_RSA	13	/* RSA-DV II/S card */
+#define PORT_MAX	13
+
+#define SERIAL_IO_PORT	0
+#define SERIAL_IO_HUB6	1
+#define SERIAL_IO_MEM	2
+
+struct serial_uart_config {
+	char	*name;
+	int	dfl_xmit_fifo_size;
+	int	flags;
+};
+
+#define UART_CLEAR_FIFO		0x01
+#define UART_USE_FIFO		0x02
+#define UART_STARTECH		0x04
+#define UART_NATSEMI		0x08
+
+/*
+ * Definitions for async_struct (and serial_struct) flags field
+ */
+#define ASYNC_HUP_NOTIFY 0x0001 /* Notify getty on hangups and closes 
+				   on the callout port */
+#define ASYNC_FOURPORT  0x0002	/* Set OU1, OUT2 per AST Fourport settings */
+#define ASYNC_SAK	0x0004	/* Secure Attention Key (Orange book) */
+#define ASYNC_SPLIT_TERMIOS 0x0008 /* Separate termios for dialin/callout */
+
+#define ASYNC_SPD_MASK	0x1030
+#define ASYNC_SPD_HI	0x0010	/* Use 56000 instead of 38400 bps */
+
+#define ASYNC_SPD_VHI	0x0020  /* Use 115200 instead of 38400 bps */
+#define ASYNC_SPD_CUST	0x0030  /* Use user-specified divisor */
+
+#define ASYNC_SKIP_TEST	0x0040 /* Skip UART test during autoconfiguration */
+#define ASYNC_AUTO_IRQ  0x0080 /* Do automatic IRQ during autoconfiguration */
+#define ASYNC_SESSION_LOCKOUT 0x0100 /* Lock out cua opens based on session */
+#define ASYNC_PGRP_LOCKOUT    0x0200 /* Lock out cua opens based on pgrp */
+#define ASYNC_CALLOUT_NOHUP   0x0400 /* Don't do hangups for cua device */
+
+#define ASYNC_HARDPPS_CD	0x0800	/* Call hardpps when CD goes high  */
+
+#define ASYNC_SPD_SHI	0x1000	/* Use 230400 instead of 38400 bps */
+#define ASYNC_SPD_WARP	0x1010	/* Use 460800 instead of 38400 bps */
+
+#define ASYNC_LOW_LATENCY 0x2000 /* Request low latency behaviour */
+
+#define ASYNC_BUGGY_UART  0x4000 /* This is a buggy UART, skip some safety
+				  * checks.  Note: can be dangerous! */
+
+#define ASYNC_AUTOPROBE	 0x8000 /* Port was autoprobed by PCI or PNP code */
+
+#define ASYNC_FLAGS	0x7FFF	/* Possible legal async flags */
+#define ASYNC_USR_MASK	0x3430	/* Legal flags that non-privileged
+				 * users can set or reset */
+
+/* Internal flags used only by kernel/chr_drv/serial.c */
+#define ASYNC_INITIALIZED	0x80000000 /* Serial port was initialized */
+#define ASYNC_NORMAL_ACTIVE	0x20000000 /* Normal device is active */
+#define ASYNC_BOOT_AUTOCONF	0x10000000 /* Autoconfigure port on bootup */
+#define ASYNC_CLOSING		0x08000000 /* Serial port is closing */
+#define ASYNC_CTS_FLOW		0x04000000 /* Do CTS flow control */
+#define ASYNC_CHECK_CD		0x02000000 /* i.e., CLOCAL */
+#define ASYNC_SHARE_IRQ		0x01000000 /* for multifunction cards
+					     --- no longer used */
+#define ASYNC_CONS_FLOW		0x00800000 /* flow control for console  */
+
+#define ASYNC_BOOT_ONLYMCA	0x00400000 /* Probe only if MCA bus */
+#define ASYNC_INTERNAL_FLAGS	0xFFC00000 /* Internal flags */
+
+/*
+ * Multiport serial configuration structure --- external structure
+ */
+struct serial_multiport_struct {
+	int		irq;
+	int		port1;
+	unsigned char	mask1, match1;
+	int		port2;
+	unsigned char	mask2, match2;
+	int		port3;
+	unsigned char	mask3, match3;
+	int		port4;
+	unsigned char	mask4, match4;
+	int		port_monitor;
+	int	reserved[32];
+};
+
+/*
+ * Serial input interrupt line counters -- external structure
+ * Four lines can interrupt: CTS, DSR, RI, DCD
+ */
+struct serial_icounter_struct {
+	int cts, dsr, rng, dcd;
+	int rx, tx;
+	int frame, overrun, parity, brk;
+	int buf_overrun;
+	int reserved[9];
+};
+
+
+#ifdef __KERNEL__
+/* Export to allow PCMCIA to use this - Dave Hinds */
+extern int register_serial(struct serial_struct *req);
+extern void unregister_serial(int line);
+
+/* Allow architectures to override entries in serial8250_ports[] at run time: */
+struct uart_port;	/* forward declaration */
+extern int early_serial_setup(struct uart_port *port);
+extern int early_serial_console_init(char *options);
+extern int serial8250_start_console(struct uart_port *port, char *options);
+
+#endif /* __KERNEL__ */
+#endif /* _LINUX_SERIAL_H */