diff -urN linux_lp.h.orig linux_lp.h
--- linux_lp.h.orig	Thu Jan  1 00:00:00 1970
+++ linux_lp.h	Fri Feb 16 19:44:52 2001
@@ -0,0 +1,188 @@
+#ifndef _LINUX_LP_H
+#define _LINUX_LP_H
+
+/*
+ * usr/include/linux/lp.h c.1991-1992 James Wiegand
+ * many modifications copyright (C) 1992 Michael K. Johnson
+ * Interrupt support added 1993 Nigel Gamble
+ */
+
+/*
+ * Per POSIX guidelines, this module reserves the LP and lp prefixes
+ * These are the lp_table[minor].flags flags...
+ */
+#define LP_EXIST 0x0001
+#define LP_SELEC 0x0002
+#define LP_BUSY	 0x0004
+#define LP_BUSY_BIT_POS 2
+#define LP_OFFL	 0x0008
+#define LP_NOPA  0x0010
+#define LP_ERR   0x0020
+#define LP_ABORT 0x0040
+#define LP_CAREFUL 0x0080 /* obsoleted -arca */
+#define LP_ABORTOPEN 0x0100
+#define	LP_TRUST_IRQ 0x0200
+
+/* timeout for each character.  This is relative to bus cycles -- it
+ * is the count in a busy loop.  THIS IS THE VALUE TO CHANGE if you
+ * have extremely slow printing, or if the machine seems to slow down
+ * a lot when you print.  If you have slow printing, increase this
+ * number and recompile, and if your system gets bogged down, decrease
+ * this number.  This can be changed with the tunelp(8) command as well.
+ */
+
+#define LP_INIT_CHAR 1000
+
+/* The parallel port specs apparently say that there needs to be
+ * a .5usec wait before and after the strobe.
+ */
+
+#define LP_INIT_WAIT 1
+
+/* This is the amount of time that the driver waits for the printer to
+ * catch up when the printer's buffer appears to be filled.  If you
+ * want to tune this and have a fast printer (i.e. HPIIIP), decrease
+ * this number, and if you have a slow printer, increase this number.
+ * This is in hundredths of a second, the default 2 being .05 second.
+ * Or use the tunelp(8) command, which is especially nice if you want
+ * change back and forth between character and graphics printing, which
+ * are wildly different...
+ */
+
+#define LP_INIT_TIME 2
+
+/* IOCTL numbers */
+#define LPCHAR   0x0601  /* corresponds to LP_INIT_CHAR */
+#define LPTIME   0x0602  /* corresponds to LP_INIT_TIME */
+#define LPABORT  0x0604  /* call with TRUE arg to abort on error,
+			    FALSE to retry.  Default is retry.  */
+#define LPSETIRQ 0x0605  /* call with new IRQ number,
+			    or 0 for polling (no IRQ) */
+#define LPGETIRQ 0x0606  /* get the current IRQ number */
+#define LPWAIT   0x0608  /* corresponds to LP_INIT_WAIT */
+/* NOTE: LPCAREFUL is obsoleted and it' s always the default right now -arca */
+#define LPCAREFUL   0x0609  /* call with TRUE arg to require out-of-paper, off-
+			    line, and error indicators good on all writes,
+			    FALSE to ignore them.  Default is ignore. */
+#define LPABORTOPEN 0x060a  /* call with TRUE arg to abort open() on error,
+			    FALSE to ignore error.  Default is ignore.  */
+#define LPGETSTATUS 0x060b  /* return LP_S(minor) */
+#define LPRESET     0x060c  /* reset printer */
+#ifdef LP_STATS
+#define LPGETSTATS  0x060d  /* get statistics (struct lp_stats) */
+#endif
+#define LPGETFLAGS  0x060e  /* get status flags */
+#define LPTRUSTIRQ  0x060f  /* set/unset the LP_TRUST_IRQ flag */
+
+/* timeout for printk'ing a timeout, in jiffies (100ths of a second).
+   This is also used for re-checking error conditions if LP_ABORT is
+   not set.  This is the default behavior. */
+
+#define LP_TIMEOUT_INTERRUPT	(60 * HZ)
+#define LP_TIMEOUT_POLLED	(10 * HZ)
+
+#ifdef __KERNEL__
+
+/* Magic numbers for defining port-device mappings */
+#define LP_PARPORT_UNSPEC -4
+#define LP_PARPORT_AUTO -3
+#define LP_PARPORT_OFF -2
+#define LP_PARPORT_NONE -1
+
+#define LP_F(minor)	lp_table[(minor)].flags		/* flags for busy, etc. */
+#define LP_CHAR(minor)	lp_table[(minor)].chars		/* busy timeout */
+#define LP_TIME(minor)	lp_table[(minor)].time		/* wait time */
+#define LP_WAIT(minor)	lp_table[(minor)].wait		/* strobe wait */
+#define LP_IRQ(minor)	lp_table[(minor)].dev->port->irq /* interrupt # */
+					/* PARPORT_IRQ_NONE means polled */
+#ifdef LP_STATS
+#define LP_STAT(minor)	lp_table[(minor)].stats		/* statistics area */
+#endif
+#define LP_BUFFER_SIZE 256
+
+#define LP_BASE(x)	lp_table[(x)].dev->port->base
+
+#ifdef LP_STATS
+struct lp_stats {
+	unsigned long chars;
+	unsigned long sleeps;
+	unsigned int maxrun;
+	unsigned int maxwait;
+	unsigned int meanwait;
+	unsigned int mdev;
+};
+#endif
+
+struct lp_struct {
+	struct pardevice *dev;
+	unsigned long flags;
+	unsigned int chars;
+	unsigned int time;
+	unsigned int wait;
+	char *lp_buffer;
+#ifdef LP_STATS
+	unsigned int lastcall;
+	unsigned int runchars;
+	struct lp_stats stats;
+#endif
+	struct wait_queue *wait_q;
+	unsigned int last_error;
+	volatile unsigned int irq_detected:1;
+	volatile unsigned int irq_missed:1;
+};
+
+/*
+ * The following constants describe the various signals of the printer port
+ * hardware.  Note that the hardware inverts some signals and that some
+ * signals are active low.  An example is LP_STROBE, which must be programmed
+ * with 1 for being active and 0 for being inactive, because the strobe signal
+ * gets inverted, but it is also active low.
+ */
+
+/* 
+ * bit defines for 8255 status port
+ * base + 1
+ * accessed with LP_S(minor), which gets the byte...
+ */
+#define LP_PBUSY	0x80  /* inverted input, active high */
+#define LP_PACK		0x40  /* unchanged input, active low */
+#define LP_POUTPA	0x20  /* unchanged input, active high */
+#define LP_PSELECD	0x10  /* unchanged input, active high */
+#define LP_PERRORP	0x08  /* unchanged input, active low */
+
+/* 
+ * defines for 8255 control port
+ * base + 2 
+ * accessed with LP_C(minor)
+ */
+#define LP_PINTEN	0x10  /* high to read data in or-ed with data out */
+#define LP_PSELECP	0x08  /* inverted output, active low */
+#define LP_PINITP	0x04  /* unchanged output, active low */
+#define LP_PAUTOLF	0x02  /* inverted output, active low */
+#define LP_PSTROBE	0x01  /* short high output on raising edge */
+
+/* 
+ * the value written to ports to test existence. PC-style ports will 
+ * return the value written. AT-style ports will return 0. so why not
+ * make them the same ? 
+ */
+#define LP_DUMMY	0x00
+
+/*
+ * This is the port delay time, in microseconds.
+ * It is used only in the lp_init() and lp_reset() routine.
+ */
+#define LP_DELAY 	50
+
+#define LP_POLLED(minor) (lp_table[(minor)].dev->port->irq == PARPORT_IRQ_NONE)
+#define LP_PREEMPTED(minor) (lp_table[(minor)].dev->port->waithead != NULL)
+
+/*
+ * function prototypes
+ */
+
+extern int lp_init(void);
+
+#endif
+
+#endif
