diff --git a/drivers/cdrom/gscd.h b/drivers/cdrom/gscd.h
new file mode 100644
index 0000000..a41e64b
--- /dev/null
+++ b/drivers/cdrom/gscd.h
@@ -0,0 +1,108 @@
+/*
+ * Definitions for a GoldStar R420 CD-ROM interface
+ *
+ *   Copyright (C) 1995  Oliver Raupach <raupach@nwfs1.rz.fh-hannover.de>
+ *                       Eberhard Moenkeberg <emoenke@gwdg.de>
+ *
+ *  Published under the GPL.
+ *
+ */
+
+
+/* The Interface Card default address is 0x340. This will work for most
+   applications. Address selection is accomplished by jumpers PN801-1 to
+   PN801-4 on the GoldStar Interface Card.
+   Appropriate settings are: 0x300, 0x310, 0x320, 0x330, 0x340, 0x350, 0x360
+   0x370, 0x380, 0x390, 0x3A0, 0x3B0, 0x3C0, 0x3D0, 0x3E0, 0x3F0             */
+
+/* insert here the I/O port address and extent */
+#define GSCD_BASE_ADDR	        0x340
+#define GSCD_IO_EXTENT          4
+
+
+/************** nothing to set up below here *********************/
+
+/* port access macro */
+#define GSCDPORT(x)		(gscd_port + (x))
+
+/*
+ * commands
+ * the lower nibble holds the command length
+ */
+#define CMD_STATUS     0x01
+#define CMD_READSUBQ   0x02 /* 1: ?, 2: UPC, 5: ? */
+#define CMD_SEEK       0x05 /* read_mode M-S-F */
+#define CMD_READ       0x07 /* read_mode M-S-F nsec_h nsec_l */
+#define CMD_RESET      0x11
+#define CMD_SETMODE    0x15
+#define CMD_PLAY       0x17 /* M-S-F M-S-F */
+#define CMD_LOCK_CTL   0x22 /* 0: unlock, 1: lock */
+#define CMD_IDENT      0x31
+#define CMD_SETSPEED   0x32 /* 0: auto */ /* ??? */
+#define CMD_GETMODE    0x41
+#define CMD_PAUSE      0x51
+#define CMD_READTOC    0x61
+#define CMD_DISKINFO   0x71
+#define CMD_TRAY_CTL   0x81
+
+/*
+ * disk_state:
+ */
+#define ST_PLAYING	0x80
+#define ST_UNLOCKED	0x40
+#define ST_NO_DISK	0x20
+#define ST_DOOR_OPEN	0x10
+#define ST_x08  0x08
+#define ST_x04	0x04
+#define ST_INVALID	0x02
+#define ST_x01	0x01
+
+/*
+ * cmd_type:
+ */
+#define TYPE_INFO	0x01
+#define TYPE_DATA	0x02
+
+/*
+ * read_mode:
+ */
+#define MOD_POLLED	0x80
+#define MOD_x08	0x08
+#define MOD_RAW	0x04
+
+#define READ_DATA(port, buf, nr) insb(port, buf, nr)
+
+#define SET_TIMER(func, jifs) \
+	((mod_timer(&gscd_timer, jiffies + jifs)), \
+	(gscd_timer.function = func))
+
+#define CLEAR_TIMER		del_timer_sync(&gscd_timer)
+
+#define MAX_TRACKS		104
+
+struct msf {
+	unsigned char	min;
+	unsigned char	sec;
+	unsigned char	frame;
+};
+
+struct gscd_Play_msf {
+	struct msf	start;
+	struct msf	end;
+};
+
+struct gscd_DiskInfo {
+	unsigned char	first;
+	unsigned char	last;
+	struct msf	diskLength;
+	struct msf	firstTrack;
+};
+
+struct gscd_Toc {
+	unsigned char	ctrl_addr;
+	unsigned char	track;
+	unsigned char	pointIndex;
+	struct msf	trackTime;
+	struct msf	diskTime;
+};
+