diff --git a/drivers/char/sx.h b/drivers/char/sx.h
new file mode 100644
index 0000000..e01f83c
--- /dev/null
+++ b/drivers/char/sx.h
@@ -0,0 +1,202 @@
+
+/*
+ *  sx.h
+ *
+ *  Copyright (C) 1998/1999 R.E.Wolff@BitWizard.nl
+ *
+ *  SX serial driver.
+ *  -- Supports SI, XIO and SX host cards. 
+ *  -- Supports TAs, MTAs and SXDCs.
+ *
+ *  Version 1.3 -- March, 1999. 
+ * 
+ */
+
+#define SX_NBOARDS        4
+#define SX_PORTSPERBOARD 32
+#define SX_NPORTS        (SX_NBOARDS * SX_PORTSPERBOARD)
+
+#ifdef __KERNEL__
+
+#define SX_MAGIC 0x12345678
+
+struct sx_port {
+  struct gs_port          gs;
+  struct wait_queue       *shutdown_wait;
+  int                     ch_base;
+  int                     c_dcd;
+  struct sx_board         *board;
+  int                     line;
+  long                    locks;
+};
+
+struct sx_board {
+  int magic;
+  void __iomem *base;
+  void __iomem *base2;
+  unsigned long hw_base;
+  int eisa_base;
+  int port_base; /* Number of the first port */
+  struct sx_port *ports;
+  int nports;
+  int flags;
+  int irq;
+  int poll;
+  int ta_type;
+  struct timer_list       timer;
+  long                    locks;
+};
+
+struct vpd_prom {
+  unsigned short id;
+  char hwrev;
+  char hwass;
+  int uniqid;
+  char myear;
+  char mweek;
+  char hw_feature[5];
+  char oem_id;
+  char identifier[16];
+};
+
+#ifndef MOD_RS232DB25MALE
+#define MOD_RS232DB25MALE 0x0a
+#endif
+
+#define SI_ISA_BOARD         0x00000001
+#define SX_ISA_BOARD         0x00000002
+#define SX_PCI_BOARD         0x00000004
+#define SX_CFPCI_BOARD       0x00000008
+#define SX_CFISA_BOARD       0x00000010
+#define SI_EISA_BOARD        0x00000020
+#define SI1_ISA_BOARD        0x00000040
+
+#define SX_BOARD_PRESENT     0x00001000
+#define SX_BOARD_INITIALIZED 0x00002000
+#define SX_IRQ_ALLOCATED     0x00004000
+
+#define SX_BOARD_TYPE        0x000000ff
+
+#define IS_SX_BOARD(board) (board->flags & (SX_PCI_BOARD | SX_CFPCI_BOARD | \
+                                            SX_ISA_BOARD | SX_CFISA_BOARD))
+
+#define IS_SI_BOARD(board) (board->flags & SI_ISA_BOARD)
+#define IS_SI1_BOARD(board) (board->flags & SI1_ISA_BOARD)
+
+#define IS_EISA_BOARD(board) (board->flags & SI_EISA_BOARD)
+
+#define IS_CF_BOARD(board) (board->flags & (SX_CFISA_BOARD | SX_CFPCI_BOARD))
+
+#define SERIAL_TYPE_NORMAL 1
+
+/* The SI processor clock is required to calculate the cc_int_count register
+   value for the SI cards. */
+#define SI_PROCESSOR_CLOCK 25000000
+
+
+/* port flags */
+/* Make sure these don't clash with gs flags or async flags */
+#define SX_RX_THROTTLE        0x0000001
+
+
+
+#define SX_PORT_TRANSMIT_LOCK  0
+#define SX_BOARD_INTR_LOCK     0
+
+
+
+/* Debug flags. Add these together to get more debug info. */
+
+#define SX_DEBUG_OPEN          0x00000001
+#define SX_DEBUG_SETTING       0x00000002
+#define SX_DEBUG_FLOW          0x00000004
+#define SX_DEBUG_MODEMSIGNALS  0x00000008
+#define SX_DEBUG_TERMIOS       0x00000010
+#define SX_DEBUG_TRANSMIT      0x00000020
+#define SX_DEBUG_RECEIVE       0x00000040
+#define SX_DEBUG_INTERRUPTS    0x00000080
+#define SX_DEBUG_PROBE         0x00000100
+#define SX_DEBUG_INIT          0x00000200
+#define SX_DEBUG_CLEANUP       0x00000400
+#define SX_DEBUG_CLOSE         0x00000800
+#define SX_DEBUG_FIRMWARE      0x00001000
+#define SX_DEBUG_MEMTEST       0x00002000
+
+#define SX_DEBUG_ALL           0xffffffff
+
+
+#define O_OTHER(tty)    \
+      ((O_OLCUC(tty))  ||\
+      (O_ONLCR(tty))   ||\
+      (O_OCRNL(tty))   ||\
+      (O_ONOCR(tty))   ||\
+      (O_ONLRET(tty))  ||\
+      (O_OFILL(tty))   ||\
+      (O_OFDEL(tty))   ||\
+      (O_NLDLY(tty))   ||\
+      (O_CRDLY(tty))   ||\
+      (O_TABDLY(tty))  ||\
+      (O_BSDLY(tty))   ||\
+      (O_VTDLY(tty))   ||\
+      (O_FFDLY(tty)))
+
+/* Same for input. */
+#define I_OTHER(tty)    \
+      ((I_INLCR(tty))  ||\
+      (I_IGNCR(tty))   ||\
+      (I_ICRNL(tty))   ||\
+      (I_IUCLC(tty))   ||\
+      (L_ISIG(tty)))
+
+#define MOD_TA   (        TA>>4)
+#define MOD_MTA  (MTA_CD1400>>4)
+#define MOD_SXDC (      SXDC>>4)
+
+
+/* We copy the download code over to the card in chunks of ... bytes */
+#define SX_CHUNK_SIZE 128
+
+#endif /* __KERNEL__ */
+
+
+
+/* Specialix document 6210046-11 page 3 */
+#define SPX(X) (('S'<<24) | ('P' << 16) | (X))
+
+/* Specialix-Linux specific IOCTLS. */
+#define SPXL(X) (SPX(('L' << 8) | (X)))
+
+
+#define SXIO_SET_BOARD      SPXL(0x01)
+#define SXIO_GET_TYPE       SPXL(0x02)
+#define SXIO_DOWNLOAD       SPXL(0x03)
+#define SXIO_INIT           SPXL(0x04)
+#define SXIO_SETDEBUG       SPXL(0x05)
+#define SXIO_GETDEBUG       SPXL(0x06)
+#define SXIO_DO_RAMTEST     SPXL(0x07)
+#define SXIO_SETGSDEBUG     SPXL(0x08)
+#define SXIO_GETGSDEBUG     SPXL(0x09)
+#define SXIO_GETNPORTS      SPXL(0x0a)
+
+
+#ifndef SXCTL_MISC_MINOR 
+/* Allow others to gather this into "major.h" or something like that */
+#define SXCTL_MISC_MINOR    167
+#endif
+
+#ifndef SX_NORMAL_MAJOR
+/* This allows overriding on the compiler commandline, or in a "major.h" 
+   include or something like that */
+#define SX_NORMAL_MAJOR  32
+#define SX_CALLOUT_MAJOR 33
+#endif
+
+
+#define SX_TYPE_SX          0x01
+#define SX_TYPE_SI          0x02
+#define SX_TYPE_CF          0x03
+
+
+#define WINDOW_LEN(board) (IS_CF_BOARD(board)?0x20000:SX_WINDOW_LEN)
+/*                         Need a #define for ^^^^^^^ !!! */
+