Remove the lpt driver, as discussed on -hackers.

6 files changed, 11 insertions, 1418 deletions

diff --git a/sys/conf/NOTES b/sys/conf/NOTES
index ec06de5..fd466759 100644
--- a/sys/conf/NOTES
+++ b/sys/conf/NOTES
@@ -2,7 +2,7 @@
 # LINT -- config file for checking all the sources, tries to pull in
 #	as much of the source tree as it can.
 #
-#	$Id: LINT,v 1.550 1999/02/07 20:33:05 joerg Exp $
+#	$Id: LINT,v 1.551 1999/02/09 01:03:17 mjacob Exp $
 #
 # NB: You probably don't want to try running a kernel built from this
 # file.  Instead, you should start from GENERIC, and add options from
@@ -1113,19 +1113,11 @@ disk		fd0	at fdc0 drive 0
 disk		fd1	at fdc0 drive 1
 
 #
-# Other standard PC hardware: `lpt', `mse', `sio', etc.
+# Other standard PC hardware: `mse', `sio', etc.
 #
-# lpt: printer port
-#	lpt specials:
-#		The port may be specified as ?.  This will cause the
-#		driver to scan the BIOS port list.
-#		The irq clause may be omitted.  This will force the port
-#		into polling mode.
 # mse: Logitech and ATI InPort bus mouse ports
 # sio: serial ports (see sio(4))
 
-device		lpt0	at isa? port? tty irq 7
-device		lpt1	at isa? port "IO_LPT3" tty irq 5
 device		mse0	at isa? port 0x23c tty irq 5
 
 device		sio0	at isa? port "IO_COM1" tty flags 0x10 irq 4
@@ -1837,7 +1829,7 @@ pseudo-device	"i4bisppp"	4
 # vpo	Iomega Zip Drive
 #	Requires SCSI disk support ('scbus' and 'da'), best
 #	performance is achieved with ports in EPP 1.9 mode.
-# nlpt	Parallel Printer, use _instead_ of lpt0
+# nlpt	Parallel Printer
 # plip	Parallel network interface
 # ppi	General-purpose I/O ("Geek Port")
 # pps	Pulse per second Timing Interface
diff --git a/sys/conf/files.i386 b/sys/conf/files.i386
index 6993be0..ffb26d3 100644
--- a/sys/conf/files.i386
+++ b/sys/conf/files.i386
@@ -1,7 +1,7 @@
 # This file tells config what files go into building a kernel,
 # files marked standard are always included.
 #
-#	$Id: files.i386,v 1.219 1999/01/19 11:31:22 yokota Exp $
+#	$Id: files.i386,v 1.220 1999/01/20 03:29:52 msmith Exp $
 #
 # The long compile-with and dependency lines are required because of
 # limitations in config: backslash-newline doesn't work in strings, and
@@ -146,7 +146,6 @@ i386/isa/isa.c			optional	isa	device-driver
 i386/isa/istallion.c		optional	stli	device-driver
 i386/isa/joy.c			optional        joy     device-driver
 i386/isa/loran.c		optional	loran	device-driver
-i386/isa/lpt.c			optional	lpt	device-driver
 i386/isa/labpc.c		optional	labpc	device-driver
 i386/isa/mcd.c			optional	mcd	device-driver
 i386/isa/mse.c			optional	mse	device-driver
diff --git a/sys/i386/conf/LINT b/sys/i386/conf/LINT
index ec06de5..fd466759 100644
--- a/sys/i386/conf/LINT
+++ b/sys/i386/conf/LINT
@@ -2,7 +2,7 @@
 # LINT -- config file for checking all the sources, tries to pull in
 #	as much of the source tree as it can.
 #
-#	$Id: LINT,v 1.550 1999/02/07 20:33:05 joerg Exp $
+#	$Id: LINT,v 1.551 1999/02/09 01:03:17 mjacob Exp $
 #
 # NB: You probably don't want to try running a kernel built from this
 # file.  Instead, you should start from GENERIC, and add options from
@@ -1113,19 +1113,11 @@ disk		fd0	at fdc0 drive 0
 disk		fd1	at fdc0 drive 1
 
 #
-# Other standard PC hardware: `lpt', `mse', `sio', etc.
+# Other standard PC hardware: `mse', `sio', etc.
 #
-# lpt: printer port
-#	lpt specials:
-#		The port may be specified as ?.  This will cause the
-#		driver to scan the BIOS port list.
-#		The irq clause may be omitted.  This will force the port
-#		into polling mode.
 # mse: Logitech and ATI InPort bus mouse ports
 # sio: serial ports (see sio(4))
 
-device		lpt0	at isa? port? tty irq 7
-device		lpt1	at isa? port "IO_LPT3" tty irq 5
 device		mse0	at isa? port 0x23c tty irq 5
 
 device		sio0	at isa? port "IO_COM1" tty flags 0x10 irq 4
@@ -1837,7 +1829,7 @@ pseudo-device	"i4bisppp"	4
 # vpo	Iomega Zip Drive
 #	Requires SCSI disk support ('scbus' and 'da'), best
 #	performance is achieved with ports in EPP 1.9 mode.
-# nlpt	Parallel Printer, use _instead_ of lpt0
+# nlpt	Parallel Printer
 # plip	Parallel network interface
 # ppi	General-purpose I/O ("Geek Port")
 # pps	Pulse per second Timing Interface
diff --git a/sys/i386/conf/NOTES b/sys/i386/conf/NOTES
index ec06de5..fd466759 100644
--- a/sys/i386/conf/NOTES
+++ b/sys/i386/conf/NOTES
@@ -2,7 +2,7 @@
 # LINT -- config file for checking all the sources, tries to pull in
 #	as much of the source tree as it can.
 #
-#	$Id: LINT,v 1.550 1999/02/07 20:33:05 joerg Exp $
+#	$Id: LINT,v 1.551 1999/02/09 01:03:17 mjacob Exp $
 #
 # NB: You probably don't want to try running a kernel built from this
 # file.  Instead, you should start from GENERIC, and add options from
@@ -1113,19 +1113,11 @@ disk		fd0	at fdc0 drive 0
 disk		fd1	at fdc0 drive 1
 
 #
-# Other standard PC hardware: `lpt', `mse', `sio', etc.
+# Other standard PC hardware: `mse', `sio', etc.
 #
-# lpt: printer port
-#	lpt specials:
-#		The port may be specified as ?.  This will cause the
-#		driver to scan the BIOS port list.
-#		The irq clause may be omitted.  This will force the port
-#		into polling mode.
 # mse: Logitech and ATI InPort bus mouse ports
 # sio: serial ports (see sio(4))
 
-device		lpt0	at isa? port? tty irq 7
-device		lpt1	at isa? port "IO_LPT3" tty irq 5
 device		mse0	at isa? port 0x23c tty irq 5
 
 device		sio0	at isa? port "IO_COM1" tty flags 0x10 irq 4
@@ -1837,7 +1829,7 @@ pseudo-device	"i4bisppp"	4
 # vpo	Iomega Zip Drive
 #	Requires SCSI disk support ('scbus' and 'da'), best
 #	performance is achieved with ports in EPP 1.9 mode.
-# nlpt	Parallel Printer, use _instead_ of lpt0
+# nlpt	Parallel Printer
 # plip	Parallel network interface
 # ppi	General-purpose I/O ("Geek Port")
 # pps	Pulse per second Timing Interface
diff --git a/sys/i386/conf/files.i386 b/sys/i386/conf/files.i386
index 6993be0..ffb26d3 100644
--- a/sys/i386/conf/files.i386
+++ b/sys/i386/conf/files.i386
@@ -1,7 +1,7 @@
 # This file tells config what files go into building a kernel,
 # files marked standard are always included.
 #
-#	$Id: files.i386,v 1.219 1999/01/19 11:31:22 yokota Exp $
+#	$Id: files.i386,v 1.220 1999/01/20 03:29:52 msmith Exp $
 #
 # The long compile-with and dependency lines are required because of
 # limitations in config: backslash-newline doesn't work in strings, and
@@ -146,7 +146,6 @@ i386/isa/isa.c			optional	isa	device-driver
 i386/isa/istallion.c		optional	stli	device-driver
 i386/isa/joy.c			optional        joy     device-driver
 i386/isa/loran.c		optional	loran	device-driver
-i386/isa/lpt.c			optional	lpt	device-driver
 i386/isa/labpc.c		optional	labpc	device-driver
 i386/isa/mcd.c			optional	mcd	device-driver
 i386/isa/mse.c			optional	mse	device-driver
diff --git a/sys/i386/isa/lpt.c b/sys/i386/isa/lpt.c
deleted file mode 100644
index 2b56158..0000000
--- a/sys/i386/isa/lpt.c
+++ /dev/null
@@ -1,1381 +0,0 @@
-/*
- * Copyright (c) 1990 William F. Jolitz, TeleMuse
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *	This software is a component of "386BSD" developed by
- *	William F. Jolitz, TeleMuse.
- * 4. Neither the name of the developer nor the name "386BSD"
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS A COMPONENT OF 386BSD DEVELOPED BY WILLIAM F. JOLITZ
- * AND IS INTENDED FOR RESEARCH AND EDUCATIONAL PURPOSES ONLY. THIS
- * SOFTWARE SHOULD NOT BE CONSIDERED TO BE A COMMERCIAL PRODUCT.
- * THE DEVELOPER URGES THAT USERS WHO REQUIRE A COMMERCIAL PRODUCT
- * NOT MAKE USE OF THIS WORK.
- *
- * FOR USERS WHO WISH TO UNDERSTAND THE 386BSD SYSTEM DEVELOPED
- * BY WILLIAM F. JOLITZ, WE RECOMMEND THE USER STUDY WRITTEN
- * REFERENCES SUCH AS THE  "PORTING UNIX TO THE 386" SERIES
- * (BEGINNING JANUARY 1991 "DR. DOBBS JOURNAL", USA AND BEGINNING
- * JUNE 1991 "UNIX MAGAZIN", GERMANY) BY WILLIAM F. JOLITZ AND
- * LYNNE GREER JOLITZ, AS WELL AS OTHER BOOKS ON UNIX AND THE
- * ON-LINE 386BSD USER MANUAL BEFORE USE. A BOOK DISCUSSING THE INTERNALS
- * OF 386BSD ENTITLED "386BSD FROM THE INSIDE OUT" WILL BE AVAILABLE LATE 1992.
- *
- * THIS SOFTWARE IS PROVIDED BY THE DEVELOPER ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE DEVELOPER BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- *	from: unknown origin, 386BSD 0.1
- *	$Id: lpt.c,v 1.71 1998/10/22 05:58:39 bde Exp $
- */
-
-/*
- * Device Driver for AT parallel printer port
- * Written by William Jolitz 12/18/90
- */
-
-/*
- * Parallel port TCP/IP interfaces added.  I looked at the driver from
- * MACH but this is a complete rewrite, and btw. incompatible, and it
- * should perform better too.  I have never run the MACH driver though.
- *
- * This driver sends two bytes (0x08, 0x00) in front of each packet,
- * to allow us to distinguish another format later.
- *
- * Now added an Linux/Crynwr compatibility mode which is enabled using
- * IF_LINK0 - Tim Wilkinson.
- *
- * TODO:
- *    Make HDLC/PPP mode, use IF_LLC1 to enable.
- *
- * Connect the two computers using a Laplink parallel cable to use this
- * feature:
- *
- *      +----------------------------------------+
- * 	|A-name	A-End	B-End	Descr.	Port/Bit |
- *      +----------------------------------------+
- *	|DATA0	2	15	Data	0/0x01   |
- *	|-ERROR	15	2	   	1/0x08   |
- *      +----------------------------------------+
- *	|DATA1	3	13	Data	0/0x02	 |
- *	|+SLCT	13	3	   	1/0x10   |
- *      +----------------------------------------+
- *	|DATA2	4	12	Data	0/0x04   |
- *	|+PE	12	4	   	1/0x20   |
- *      +----------------------------------------+
- *	|DATA3	5	10	Strobe	0/0x08   |
- *	|-ACK	10	5	   	1/0x40   |
- *      +----------------------------------------+
- *	|DATA4	6	11	Data	0/0x10   |
- *	|BUSY	11	6	   	1/~0x80  |
- *      +----------------------------------------+
- *	|GND	18-25	18-25	GND	-        |
- *      +----------------------------------------+
- *
- * Expect transfer-rates up to 75 kbyte/sec.
- *
- * If GCC could correctly grok
- *	register int port asm("edx")
- * the code would be cleaner
- *
- * Poul-Henning Kamp <phk@freebsd.org>
- */
-
-#include "lpt.h"
-#include "opt_devfs.h"
-#include "opt_inet.h"
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/conf.h>
-#include <sys/buf.h>
-#include <sys/kernel.h>
-#include <sys/uio.h>
-#include <sys/syslog.h>
-#ifdef DEVFS
-#include <sys/devfsext.h>
-#endif /*DEVFS*/
-
-#include <machine/clock.h>
-#include <machine/lpt.h>
-
-#include <vm/vm.h>
-#include <vm/vm_param.h>
-#include <vm/pmap.h>
-
-#include <i386/isa/isa.h>
-#include <i386/isa/isa_device.h>
-#include <i386/isa/lptreg.h>
-
-#ifdef INET
-#include <sys/malloc.h>
-#include <sys/mbuf.h>
-#include <sys/socket.h>
-#include <sys/sockio.h>
-
-#include <net/if.h>
-#include <net/if_types.h>
-#include <net/netisr.h>
-#include <netinet/in.h>
-#include <netinet/in_var.h>
-#include "bpfilter.h"
-#if NBPFILTER > 0
-#include <net/bpf.h>
-#endif
-#endif /* INET */
-
-
-#define	LPINITRDY	4	/* wait up to 4 seconds for a ready */
-#define	LPTOUTINITIAL	10	/* initial timeout to wait for ready 1/10 s */
-#define	LPTOUTMAX	1	/* maximal timeout 1 s */
-#define	LPPRI		(PZERO+8)
-#define	BUFSIZE		1024
-
-#ifdef INET
-#ifndef LPMTU			/* MTU for the lp# interfaces */
-#define	LPMTU	1500
-#endif
-
-#ifndef LPMAXSPIN1		/* DELAY factor for the lp# interfaces */
-#define	LPMAXSPIN1	8000   /* Spinning for remote intr to happen */
-#endif
-
-#ifndef LPMAXSPIN2		/* DELAY factor for the lp# interfaces */
-#define	LPMAXSPIN2	500	/* Spinning for remote handshake to happen */
-#endif
-
-#ifndef LPMAXERRS		/* Max errors before !RUNNING */
-#define	LPMAXERRS	100
-#endif
-
-#define CLPIPHDRLEN	14	/* We send dummy ethernet addresses (two) + packet type in front of packet */
-#define	CLPIP_SHAKE	0x80	/* This bit toggles between nibble reception */
-#define MLPIPHDRLEN	CLPIPHDRLEN
-
-#define LPIPHDRLEN	2	/* We send 0x08, 0x00 in front of packet */
-#define	LPIP_SHAKE	0x40	/* This bit toggles between nibble reception */
-#if !defined(MLPIPHDRLEN) || LPIPHDRLEN > MLPIPHDRLEN
-#define MLPIPHDRLEN	LPIPHDRLEN
-#endif
-
-#define	LPIPTBLSIZE	256	/* Size of octet translation table */
-
-#endif /* INET */
-
-/* BIOS printer list - used by BIOS probe*/
-#define	BIOS_LPT_PORTS	0x408
-#define	BIOS_PORTS	(short *)(KERNBASE+BIOS_LPT_PORTS)
-#define	BIOS_MAX_LPT	4
-
-
-#ifndef DEBUG
-#define lprintf(args)
-#else
-#define lprintf(args)	do {				\
-				if (lptflag)		\
-					printf args;	\
-			} while (0)
-static int volatile lptflag = 1;
-#endif
-
-#define	LPTUNIT(s)	((s)&0x03)
-#define	LPTFLAGS(s)	((s)&0xfc)
-
-static struct lpt_softc {
-	int	sc_port;
-	short	sc_state;
-	/* default case: negative prime, negative ack, handshake strobe,
-	   prime once */
-	u_char	sc_control;
-	char	sc_flags;
-#define LP_POS_INIT	0x04	/* if we are a postive init signal */
-#define LP_POS_ACK	0x08	/* if we are a positive going ack */
-#define LP_NO_PRIME	0x10	/* don't prime the printer at all */
-#define LP_PRIMEOPEN	0x20	/* prime on every open */
-#define LP_AUTOLF	0x40	/* tell printer to do an automatic lf */
-#define LP_BYPASS	0x80	/* bypass  printer ready checks */
-	struct	buf *sc_inbuf;
-	short	sc_xfercnt ;
-	char	sc_primed;
-	char	*sc_cp ;
-	u_char	sc_irq ;	/* IRQ status of port */
-#define LP_HAS_IRQ	0x01	/* we have an irq available */
-#define LP_USE_IRQ	0x02	/* we are using our irq */
-#define LP_ENABLE_IRQ	0x04	/* enable IRQ on open */
-	u_char	sc_backoff ;	/* time to call lptout() again */
-
-#ifdef INET
-	struct  ifnet	sc_if;
-	u_char		*sc_ifbuf;
-	int		sc_iferrs;
-#endif
-#ifdef DEVFS
-	void	*devfs_token;
-	void	*devfs_token_ctl;
-#endif
-} lpt_sc[NLPT] ;
-
-/* bits for state */
-#define	OPEN		(1<<0)	/* device is open */
-#define	ASLP		(1<<1)	/* awaiting draining of printer */
-#define	ERROR		(1<<2)	/* error was received from printer */
-#define	OBUSY		(1<<3)	/* printer is busy doing output */
-#define LPTOUT		(1<<4)	/* timeout while not selected */
-#define TOUT		(1<<5)	/* timeout while not selected */
-#define INIT		(1<<6)	/* waiting to initialize for open */
-#define INTERRUPTED	(1<<7)	/* write call was interrupted */
-
-
-/* status masks to interrogate printer status */
-#define RDY_MASK	(LPS_SEL|LPS_OUT|LPS_NBSY|LPS_NERR)	/* ready ? */
-#define LP_READY	(LPS_SEL|LPS_NBSY|LPS_NERR)
-
-/* Printer Ready condition  - from lpa.c */
-/* Only used in polling code */
-#define	LPS_INVERT	(LPS_NBSY | LPS_NACK |           LPS_SEL | LPS_NERR)
-#define	LPS_MASK	(LPS_NBSY | LPS_NACK | LPS_OUT | LPS_SEL | LPS_NERR)
-#define	NOT_READY(x)	((inb(x)^LPS_INVERT)&LPS_MASK)
-
-#define	MAX_SLEEP	(hz*5)	/* Timeout while waiting for device ready */
-#define	MAX_SPIN	20	/* Max delay for device ready in usecs */
-
-static timeout_t lptout;
-static int	lptprobe (struct isa_device *dvp);
-static int	lptattach (struct isa_device *isdp);
-static ointhand2_t	lptintr;
-
-#ifdef INET
-
-/* Tables for the lp# interface */
-static u_char *txmith;
-#define txmitl (txmith+(1*LPIPTBLSIZE))
-#define trecvh (txmith+(2*LPIPTBLSIZE))
-#define trecvl (txmith+(3*LPIPTBLSIZE))
-
-static u_char *ctxmith;
-#define ctxmitl (ctxmith+(1*LPIPTBLSIZE))
-#define ctrecvh (ctxmith+(2*LPIPTBLSIZE))
-#define ctrecvl (ctxmith+(3*LPIPTBLSIZE))
-
-/* Functions for the lp# interface */
-static void lpattach(struct lpt_softc *,int);
-static int lpinittables(void);
-static int lpioctl(struct ifnet *, u_long, caddr_t);
-static int lpoutput(struct ifnet *, struct mbuf *, struct sockaddr *,
-	struct rtentry *);
-static void lpintr(int);
-#endif /* INET */
-
-struct	isa_driver lptdriver = {
-	lptprobe, lptattach, "lpt"
-};
-
-static	d_open_t	lptopen;
-static	d_close_t	lptclose;
-static	d_write_t	lptwrite;
-static	d_ioctl_t	lptioctl;
-
-#define CDEV_MAJOR 16
-static struct cdevsw lpt_cdevsw = 
-	{ lptopen,	lptclose,	noread,		lptwrite,	/*16*/
-	  lptioctl,	nullstop,	nullreset,	nodevtotty,/* lpt */
-	  seltrue,	nommap,		nostrat,	"lpt",	NULL,	-1 };
-
-
-/*
- * Internal routine to lptprobe to do port tests of one byte value
- */
-static int
-lpt_port_test (int port, u_char data, u_char mask)
-{
-	int	temp, timeout;
-
-	data = data & mask;
-	outb(port, data);
-	timeout = 10000;
-	do {
-		DELAY(10);
-		temp = inb(port) & mask;
-	}
-	while (temp != data && --timeout);
-	lprintf(("Port 0x%x\tout=%x\tin=%x\ttout=%d\n",
-		port, data, temp, timeout));
-	return (temp == data);
-}
-
-/*
- * New lpt port probe Geoff Rehmet - Rhodes University - 14/2/94
- * Based partially on Rod Grimes' printer probe
- *
- * Logic:
- *	1) If no port address was given, use the bios detected ports
- *	   and autodetect what ports the printers are on.
- *	2) Otherwise, probe the data port at the address given,
- *	   using the method in Rod Grimes' port probe.
- *	   (Much code ripped off directly from Rod's probe.)
- *
- * Comments from Rod's probe:
- * Logic:
- *	1) You should be able to write to and read back the same value
- *	   to the data port.  Do an alternating zeros, alternating ones,
- *	   walking zero, and walking one test to check for stuck bits.
- *
- *	2) You should be able to write to and read back the same value
- *	   to the control port lower 5 bits, the upper 3 bits are reserved
- *	   per the IBM PC technical reference manauls and different boards
- *	   do different things with them.  Do an alternating zeros, alternating
- *	   ones, walking zero, and walking one test to check for stuck bits.
- *
- *	   Some printers drag the strobe line down when the are powered off
- * 	   so this bit has been masked out of the control port test.
- *
- *	   XXX Some printers may not like a fast pulse on init or strobe, I
- *	   don't know at this point, if that becomes a problem these bits
- *	   should be turned off in the mask byte for the control port test.
- *
- *	   We are finally left with a mask of 0x14, due to some printers
- *	   being adamant about holding other bits high ........
- *
- *	   Before probing the control port, we write a 0 to the data port -
- *	   If not, some printers chuck out garbage when the strobe line
- *	   gets toggled.
- *
- *	3) Set the data and control ports to a value of 0
- *
- *	This probe routine has been tested on Epson Lx-800, HP LJ3P,
- *	Epson FX-1170 and C.Itoh 8510RM
- *	printers.
- *	Quick exit on fail added.
- */
-int
-lptprobe(struct isa_device *dvp)
-{
-	int		port;
-	static short	next_bios_lpt = 0;
-	int		status;
-	static u_char	testbyte[18] = {
-		0x55,			/* alternating zeros */
-		0xaa,			/* alternating ones */
-		0xfe, 0xfd, 0xfb, 0xf7,
-		0xef, 0xdf, 0xbf, 0x7f,	/* walking zero */
-		0x01, 0x02, 0x04, 0x08,
-		0x10, 0x20, 0x40, 0x80	/* walking one */
-	};
-	int		i;
-
-	/*
-	 * Make sure there is some way for lptopen to see that
-	 * the port is not configured
-	 * This 0 will remain if the port isn't attached
-	 */
-	(lpt_sc + dvp->id_unit)->sc_port = 0;
-
-	status = IO_LPTSIZE;
-	/* If port not specified, use bios list */
-	if(dvp->id_iobase < 0) {	/* port? */
-		if((next_bios_lpt < BIOS_MAX_LPT) &&
-				(*(BIOS_PORTS+next_bios_lpt) != 0) ) {
-			dvp->id_iobase = *(BIOS_PORTS+next_bios_lpt++);
-			goto end_probe;
-		} else
-			return (0);
-	}
-
-	/* Port was explicitly specified */
-	/* This allows probing of ports unknown to the BIOS */
-	port = dvp->id_iobase + lpt_data;
-	for (i = 0; i < 18; i++) {
-		if (!lpt_port_test(port, testbyte[i], 0xff)) {
-			status = 0;
-			goto end_probe;
-		}
-	}
-
-end_probe:
-	/* write 0's to control and data ports */
-	outb(dvp->id_iobase+lpt_data, 0);
-	outb(dvp->id_iobase+lpt_control, 0);
-
-	return (status);
-}
-
-/* XXX Todo - try and detect if interrupt is working */
-int
-lptattach(struct isa_device *isdp)
-{
-	struct	lpt_softc	*sc;
-	int	unit;
-
-	isdp->id_ointr = lptintr;
-	unit = isdp->id_unit;
-	sc = lpt_sc + unit;
-	sc->sc_port = isdp->id_iobase;
-	sc->sc_primed = 0;	/* not primed yet */
-	outb(sc->sc_port+lpt_control, LPC_NINIT);
-
-	/* check if we can use interrupt */
-	lprintf(("oldirq %x\n", sc->sc_irq));
-	if (isdp->id_irq) {
-		sc->sc_irq = LP_HAS_IRQ | LP_USE_IRQ | LP_ENABLE_IRQ;
-		printf("lpt%d: Interrupt-driven port\n", unit);
-#ifdef INET
-		lpattach(sc, unit);
-#endif
-	} else {
-		sc->sc_irq = 0;
-		lprintf(("lpt%d: Polled port\n", unit));
-	}
-	lprintf(("irq %x\n", sc->sc_irq));
-
-#ifdef DEVFS
-	/* XXX what to do about the flags in the minor number? */
-	sc->devfs_token = devfs_add_devswf(&lpt_cdevsw,
-		unit, DV_CHR,
-		UID_ROOT, GID_WHEEL, 0600, "lpt%d", unit);
-	sc->devfs_token_ctl = devfs_add_devswf(&lpt_cdevsw,
-		unit | LP_BYPASS, DV_CHR,
-		UID_ROOT, GID_WHEEL, 0600, "lpctl%d", unit);
-#endif
-	return (1);
-}
-
-/*
- * lptopen -- reset the printer, then wait until it's selected and not busy.
- *	If LP_BYPASS flag is selected, then we do not try to select the
- *	printer -- this is just used for passing ioctls.
- */
-
-static	int
-lptopen (dev_t dev, int flags, int fmt, struct proc *p)
-{
-	struct lpt_softc *sc;
-	int s;
-	int trys, port;
-	u_int unit = LPTUNIT(minor(dev));
-
-	sc = lpt_sc + unit;
-	if ((unit >= NLPT) || (sc->sc_port == 0))
-		return (ENXIO);
-
-#ifdef INET
-	if (sc->sc_if.if_flags & IFF_UP)
-		return(EBUSY);
-#endif
-
-	if (sc->sc_state) {
-		lprintf(("lp: still open %x\n", sc->sc_state));
-		return(EBUSY);
-	} else
-		sc->sc_state |= INIT;
-
-	sc->sc_flags = LPTFLAGS(minor(dev));
-
-	/* Check for open with BYPASS flag set. */
-	if (sc->sc_flags & LP_BYPASS) {
-		sc->sc_state = OPEN;
-		return(0);
-	}
-
-	s = spltty();
-	lprintf(("lp flags 0x%x\n", sc->sc_flags));
-	port = sc->sc_port;
-
-	/* set IRQ status according to ENABLE_IRQ flag */
-	if (sc->sc_irq & LP_ENABLE_IRQ)
-		sc->sc_irq |= LP_USE_IRQ;
-	else
-		sc->sc_irq &= ~LP_USE_IRQ;
-
-	/* init printer */
-	if ((sc->sc_flags & LP_NO_PRIME) == 0) {
-		if((sc->sc_flags & LP_PRIMEOPEN) || sc->sc_primed == 0) {
-			outb(port+lpt_control, 0);
-			sc->sc_primed++;
-			DELAY(500);
-		}
-	}
-
-	outb (port+lpt_control, LPC_SEL|LPC_NINIT);
-
-	/* wait till ready (printer running diagnostics) */
-	trys = 0;
-	do {
-		/* ran out of waiting for the printer */
-		if (trys++ >= LPINITRDY*4) {
-			splx(s);
-			sc->sc_state = 0;
-			lprintf(("status %x\n", inb(port+lpt_status)));
-			return (EBUSY);
-		}
-
-		/* wait 1/4 second, give up if we get a signal */
-		if (tsleep ((caddr_t)sc, LPPRI|PCATCH, "lptinit", hz/4) !=
-		    EWOULDBLOCK) {
-			sc->sc_state = 0;
-			splx(s);
-			return (EBUSY);
-		}
-
-		/* is printer online and ready for output */
-	} while ((inb(port+lpt_status) & (LPS_SEL|LPS_OUT|LPS_NBSY|LPS_NERR)) !=
-		 (LPS_SEL|LPS_NBSY|LPS_NERR));
-
-	sc->sc_control = LPC_SEL|LPC_NINIT;
-	if (sc->sc_flags & LP_AUTOLF)
-		sc->sc_control |= LPC_AUTOL;
-
-	/* enable interrupt if interrupt-driven */
-	if (sc->sc_irq & LP_USE_IRQ)
-		sc->sc_control |= LPC_ENA;
-
-	outb(port+lpt_control, sc->sc_control);
-
-	sc->sc_state = OPEN;
-	sc->sc_inbuf = geteblk(BUFSIZE);
-	sc->sc_xfercnt = 0;
-	splx(s);
-
-	/* only use timeout if using interrupt */
-	lprintf(("irq %x\n", sc->sc_irq));
-	if (sc->sc_irq & LP_USE_IRQ) {
-		sc->sc_state |= TOUT;
-		timeout (lptout, (caddr_t)sc,
-			 (sc->sc_backoff = hz/LPTOUTINITIAL));
-	}
-
-	lprintf(("opened.\n"));
-	return(0);
-}
-
-static void
-lptout (void *arg)
-{
-	struct lpt_softc *sc = arg;
-	int pl;
-
-	lprintf(("T %x ", inb(sc->sc_port+lpt_status)));
-	if (sc->sc_state & OPEN) {
-		sc->sc_backoff++;
-		if (sc->sc_backoff > hz/LPTOUTMAX)
-			sc->sc_backoff = sc->sc_backoff > hz/LPTOUTMAX;
-		timeout (lptout, (caddr_t)sc, sc->sc_backoff);
-	} else
-		sc->sc_state &= ~TOUT;
-
-	if (sc->sc_state & ERROR)
-		sc->sc_state &= ~ERROR;
-
-	/*
-	 * Avoid possible hangs do to missed interrupts
-	 */
-	if (sc->sc_xfercnt) {
-		pl = spltty();
-		lptintr(sc - lpt_sc);
-		splx(pl);
-	} else {
-		sc->sc_state &= ~OBUSY;
-		wakeup((caddr_t)sc);
-	}
-}
-
-/*
- * lptclose -- close the device, free the local line buffer.
- *
- * Check for interrupted write call added.
- */
-
-static	int
-lptclose(dev_t dev, int flags, int fmt, struct proc *p)
-{
-	struct lpt_softc *sc = lpt_sc + LPTUNIT(minor(dev));
-	int port = sc->sc_port;
-
-	if(sc->sc_flags & LP_BYPASS)
-		goto end_close;
-
-	sc->sc_state &= ~OPEN;
-
-	/* if the last write was interrupted, don't complete it */
-	if((!(sc->sc_state  & INTERRUPTED)) && (sc->sc_irq & LP_USE_IRQ))
-		while ((inb(port+lpt_status) & (LPS_SEL|LPS_OUT|LPS_NBSY|LPS_NERR)) !=
-			(LPS_SEL|LPS_NBSY|LPS_NERR) || sc->sc_xfercnt)
-			/* wait 1/4 second, give up if we get a signal */
-			if (tsleep ((caddr_t)sc, LPPRI|PCATCH,
-				"lpclose", hz) != EWOULDBLOCK)
-				break;
-
-	outb(sc->sc_port+lpt_control, LPC_NINIT);
-	brelse(sc->sc_inbuf);
-
-end_close:
-	sc->sc_state = 0;
-	sc->sc_xfercnt = 0;
-	lprintf(("closed.\n"));
-	return(0);
-}
-
-/*
- * pushbytes()
- *	Workhorse for actually spinning and writing bytes to printer
- *	Derived from lpa.c
- *	Originally by ?
- *
- *	This code is only used when we are polling the port
- */
-static int
-pushbytes(struct lpt_softc * sc)
-{
-	int spin, err, tic;
-	char ch;
-	int port = sc->sc_port;
-
-	lprintf(("p"));
-	/* loop for every character .. */
-	while (sc->sc_xfercnt > 0) {
-		/* printer data */
-		ch = *(sc->sc_cp);
-		sc->sc_cp++;
-		sc->sc_xfercnt--;
-
-		/*
-		 * Wait for printer ready.
-		 * Loop 20 usecs testing BUSY bit, then sleep
-		 * for exponentially increasing timeout. (vak)
-		 */
-		for (spin=0; NOT_READY(port+lpt_status) && spin<MAX_SPIN; ++spin)
-			DELAY(1);	/* XXX delay is NOT this accurate! */
-		if (spin >= MAX_SPIN) {
-			tic = 0;
-			while (NOT_READY(port+lpt_status)) {
-				/*
-				 * Now sleep, every cycle a
-				 * little longer ..
-				 */
-				tic = tic + tic + 1;
-				/*
-				 * But no more than 10 seconds. (vak)
-				 */
-				if (tic > MAX_SLEEP)
-					tic = MAX_SLEEP;
-				err = tsleep((caddr_t)sc, LPPRI,
-					"lptpoll", tic);
-				if (err != EWOULDBLOCK) {
-					return (err);
-				}
-			}
-		}
-
-		/* output data */
-		outb(port+lpt_data, ch);
-		/* strobe */
-		outb(port+lpt_control, sc->sc_control|LPC_STB);
-		outb(port+lpt_control, sc->sc_control);
-
-	}
-	return(0);
-}
-
-/*
- * lptwrite --copy a line from user space to a local buffer, then call
- * putc to get the chars moved to the output queue.
- *
- * Flagging of interrupted write added.
- */
-
-static	int
-lptwrite(dev_t dev, struct uio * uio, int ioflag)
-{
-	register unsigned n;
-	int pl, err;
-	struct lpt_softc *sc = lpt_sc + LPTUNIT(minor(dev));
-
-	if(sc->sc_flags & LP_BYPASS) {
-		/* we can't do writes in bypass mode */
-		return(EPERM);
-	}
-
-	sc->sc_state &= ~INTERRUPTED;
-	while ((n = min(BUFSIZE, uio->uio_resid)) != 0) {
-		sc->sc_cp = sc->sc_inbuf->b_data ;
-		uiomove(sc->sc_cp, n, uio);
-		sc->sc_xfercnt = n ;
-		while ((sc->sc_xfercnt > 0)&&(sc->sc_irq & LP_USE_IRQ)) {
-			lprintf(("i"));
-			/* if the printer is ready for a char, */
-			/* give it one */
-			if ((sc->sc_state & OBUSY) == 0){
-				lprintf(("\nC %d. ", sc->sc_xfercnt));
-				pl = spltty();
-				lptintr(sc - lpt_sc);
-				(void) splx(pl);
-			}
-			lprintf(("W "));
-			if (sc->sc_state & OBUSY)
-				if ((err = tsleep ((caddr_t)sc,
-					 LPPRI|PCATCH, "lpwrite", 0))) {
-					sc->sc_state |= INTERRUPTED;
-					return(err);
-				}
-		}
-		/* check to see if we must do a polled write */
-		if(!(sc->sc_irq & LP_USE_IRQ) && (sc->sc_xfercnt)) {
-			lprintf(("p"));
-			if((err = pushbytes(sc)))
-				return(err);
-		}
-	}
-	return(0);
-}
-
-/*
- * lptintr -- handle printer interrupts which occur when the printer is
- * ready to accept another char.
- *
- * do checking for interrupted write call.
- */
-
-static void
-lptintr(int unit)
-{
-	struct lpt_softc *sc = lpt_sc + unit;
-	int port = sc->sc_port, sts;
-	int i;
-
-#ifdef INET
-	if(sc->sc_if.if_flags & IFF_UP) {
-	    lpintr(unit);
-	    return;
-	}
-#endif /* INET */
-
-	/*
-	 * Is printer online and ready for output?
-	 *
-	 * Avoid falling back to lptout() too quickly.  First spin-loop
-	 * to see if the printer will become ready ``really soon now''.
-	 */
-	for (i = 0;
-	     i < 100 &&
-	     ((sts=inb(port+lpt_status)) & RDY_MASK) != LP_READY;
-	     i++) ;
-	if ((sts & RDY_MASK) == LP_READY) {
-		sc->sc_state = (sc->sc_state | OBUSY) & ~ERROR;
-		sc->sc_backoff = hz/LPTOUTINITIAL;
-
-		if (sc->sc_xfercnt) {
-			/* send char */
-			/*lprintf(("%x ", *sc->sc_cp)); */
-			outb(port+lpt_data, *sc->sc_cp++) ;
-			outb(port+lpt_control, sc->sc_control|LPC_STB);
-			/* DELAY(X) */
-			outb(port+lpt_control, sc->sc_control);
-
-			/* any more data for printer */
-			if(--(sc->sc_xfercnt) > 0) return;
-		}
-
-		/*
-		 * No more data waiting for printer.
-		 * Wakeup is not done if write call was interrupted.
-		 */
-		sc->sc_state &= ~OBUSY;
-		if(!(sc->sc_state & INTERRUPTED))
-			wakeup((caddr_t)sc);
-		lprintf(("w "));
-		return;
-	} else	{	/* check for error */
-		if(((sts & (LPS_NERR | LPS_OUT) ) != LPS_NERR) &&
-				(sc->sc_state & OPEN))
-			sc->sc_state |= ERROR;
-		/* lptout() will jump in and try to restart. */
-	}
-	lprintf(("sts %x ", sts));
-}
-
-static	int
-lptioctl(dev_t dev, u_long cmd, caddr_t data, int flags, struct proc *p)
-{
-	int	error = 0;
-        struct	lpt_softc *sc;
-        u_int	unit = LPTUNIT(minor(dev));
-	u_char	old_sc_irq;	/* old printer IRQ status */
-
-        sc = lpt_sc + unit;
-
-	switch (cmd) {
-	case LPT_IRQ :
-		if(sc->sc_irq & LP_HAS_IRQ) {
-			/*
-			 * NOTE:
-			 * If the IRQ status is changed,
-			 * this will only be visible on the
-			 * next open.
-			 *
-			 * If interrupt status changes,
-			 * this gets syslog'd.
-			 */
-			old_sc_irq = sc->sc_irq;
-			if(*(int*)data == 0)
-				sc->sc_irq &= (~LP_ENABLE_IRQ);
-			else
-				sc->sc_irq |= LP_ENABLE_IRQ;
-			if (old_sc_irq != sc->sc_irq )
-				log(LOG_NOTICE, "lpt%c switched to %s mode\n",
-					(char)unit+'0',
-					(sc->sc_irq & LP_ENABLE_IRQ)?
-					"interrupt-driven":"polled");
-		} else /* polled port */
-			error = EOPNOTSUPP;
-		break;
-	default:
-		error = ENODEV;
-	}
-
-	return(error);
-}
-
-#ifdef INET
-
-static void
-lpattach (struct lpt_softc *sc, int unit)
-{
-	struct ifnet *ifp = &sc->sc_if;
-
-	ifp->if_softc = sc;
-	ifp->if_name = "lp";
-	ifp->if_unit = unit;
-	ifp->if_mtu = LPMTU;
-	ifp->if_flags = IFF_SIMPLEX | IFF_POINTOPOINT | IFF_MULTICAST;
-	ifp->if_ioctl = lpioctl;
-	ifp->if_output = lpoutput;
-	ifp->if_type = IFT_PARA;
-	ifp->if_hdrlen = 0;
-	ifp->if_addrlen = 0;
-	ifp->if_snd.ifq_maxlen = IFQ_MAXLEN;
-	if_attach(ifp);
-	printf("lp%d: TCP/IP capable interface\n", unit);
-
-#if NBPFILTER > 0
-	bpfattach(ifp, DLT_NULL, LPIPHDRLEN);
-#endif
-}
-/*
- * Build the translation tables for the LPIP (BSD unix) protocol.
- * We don't want to calculate these nasties in our tight loop, so we
- * precalculate them when we initialize.
- */
-static int
-lpinittables (void)
-{
-    int i;
-
-    if (!txmith)
-	txmith = malloc(4*LPIPTBLSIZE, M_DEVBUF, M_NOWAIT);
-
-    if (!txmith)
-	return 1;
-
-    if (!ctxmith)
-	ctxmith = malloc(4*LPIPTBLSIZE, M_DEVBUF, M_NOWAIT);
-
-    if (!ctxmith)
-	return 1;
-
-    for (i=0; i < LPIPTBLSIZE; i++) {
-	ctxmith[i] = (i & 0xF0) >> 4;
-	ctxmitl[i] = 0x10 | (i & 0x0F);
-	ctrecvh[i] = (i & 0x78) << 1;
-	ctrecvl[i] = (i & 0x78) >> 3;
-    }
-
-    for (i=0; i < LPIPTBLSIZE; i++) {
-	txmith[i] = ((i & 0x80) >> 3) | ((i & 0x70) >> 4) | 0x08;
-	txmitl[i] = ((i & 0x08) << 1) | (i & 0x07);
-	trecvh[i] = ((~i) & 0x80) | ((i & 0x38) << 1);
-	trecvl[i] = (((~i) & 0x80) >> 4) | ((i & 0x38) >> 3);
-    }
-
-    return 0;
-}
-
-/*
- * Process an ioctl request.
- */
-
-static int
-lpioctl (struct ifnet *ifp, u_long cmd, caddr_t data)
-{
-    struct lpt_softc *sc = lpt_sc + ifp->if_unit;
-    struct ifaddr *ifa = (struct ifaddr *)data;
-    struct ifreq *ifr = (struct ifreq *)data;
-    u_char *ptr;
-
-    switch (cmd) {
-
-    case SIOCSIFDSTADDR:
-    case SIOCAIFADDR:
-    case SIOCSIFADDR:
-	if (ifa->ifa_addr->sa_family != AF_INET)
-	    return EAFNOSUPPORT;
-	ifp->if_flags |= IFF_UP;
-	/* FALLTHROUGH */
-    case SIOCSIFFLAGS:
-	if ((!(ifp->if_flags & IFF_UP)) && (ifp->if_flags & IFF_RUNNING)) {
-	    outb(sc->sc_port + lpt_control, 0x00);
-	    ifp->if_flags &= ~IFF_RUNNING;
-	    break;
-	}
-	if (((ifp->if_flags & IFF_UP)) && (!(ifp->if_flags & IFF_RUNNING))) {
-	    if (lpinittables())
-		return ENOBUFS;
-	    sc->sc_ifbuf = malloc(sc->sc_if.if_mtu + MLPIPHDRLEN,
-				  M_DEVBUF, M_WAITOK);
-	    if (!sc->sc_ifbuf)
-		return ENOBUFS;
-
-	    outb(sc->sc_port + lpt_control, LPC_ENA);
-	    ifp->if_flags |= IFF_RUNNING;
-	}
-	break;
-
-    case SIOCSIFMTU:
-	ptr = sc->sc_ifbuf;
-	sc->sc_ifbuf = malloc(ifr->ifr_mtu+MLPIPHDRLEN, M_DEVBUF, M_NOWAIT);
-	if (!sc->sc_ifbuf) {
-	    sc->sc_ifbuf = ptr;
-	    return ENOBUFS;
-	}
-	if (ptr)
-	    free(ptr,M_DEVBUF);
-	sc->sc_if.if_mtu = ifr->ifr_mtu;
-	break;
-
-    case SIOCGIFMTU:
-	ifr->ifr_mtu = sc->sc_if.if_mtu;
-	break;
-
-    case SIOCADDMULTI:
-    case SIOCDELMULTI:
-	if (ifr == 0) {
-	    return EAFNOSUPPORT;		/* XXX */
-	}
-	switch (ifr->ifr_addr.sa_family) {
-
-#ifdef INET
-	case AF_INET:
-	    break;
-#endif
-
-	default:
-	    return EAFNOSUPPORT;
-	}
-	break;
-
-    default:
-	lprintf(("LP:ioctl(0x%lx)\n", cmd));
-	return EINVAL;
-    }
-    return 0;
-}
-
-static __inline int
-clpoutbyte (u_char byte, int spin, int data_port, int status_port)
-{
-	outb(data_port, ctxmitl[byte]);
-	while (inb(status_port) & CLPIP_SHAKE)
-		if (--spin == 0) {
-			return 1;
-		}
-	outb(data_port, ctxmith[byte]);
-	while (!(inb(status_port) & CLPIP_SHAKE))
-		if (--spin == 0) {
-			return 1;
-		}
-	return 0;
-}
-
-static __inline int
-clpinbyte (int spin, int data_port, int status_port)
-{
-	int c, cl;
-
-	while((inb(status_port) & CLPIP_SHAKE))
-	    if(!--spin) {
-		return -1;
-	    }
-	cl = inb(status_port);
-	outb(data_port, 0x10);
-
-	while(!(inb(status_port) & CLPIP_SHAKE))
-	    if(!--spin) {
-		return -1;
-	    }
-	c = inb(status_port);
-	outb(data_port, 0x00);
-
-	return (ctrecvl[cl] | ctrecvh[c]);
-}
-
-static void
-lpintr (int unit)
-{
-	struct   lpt_softc *sc = lpt_sc + unit;
-	register int lpt_data_port = sc->sc_port + lpt_data;
-	register int lpt_stat_port = sc->sc_port + lpt_status;
-		 int lpt_ctrl_port = sc->sc_port + lpt_control;
-	int len, s, j;
-	u_char *bp;
-	u_char c, cl;
-	struct mbuf *top;
-
-	s = splhigh();
-
-	if (sc->sc_if.if_flags & IFF_LINK0) {
-
-	    /* Ack. the request */
-	    outb(lpt_data_port, 0x01);
-
-	    /* Get the packet length */
-	    j = clpinbyte(LPMAXSPIN2, lpt_data_port, lpt_stat_port);
-	    if (j == -1)
-		goto err;
-	    len = j;
-	    j = clpinbyte(LPMAXSPIN2, lpt_data_port, lpt_stat_port);
-	    if (j == -1)
-		goto err;
-	    len = len + (j << 8);
-	    if (len > sc->sc_if.if_mtu + MLPIPHDRLEN)
-		goto err;
-
-	    bp  = sc->sc_ifbuf;
-	
-	    while (len--) {
-	        j = clpinbyte(LPMAXSPIN2, lpt_data_port, lpt_stat_port);
-	        if (j == -1) {
-		    goto err;
-	        }
-	        *bp++ = j;
-	    }
-	    /* Get and ignore checksum */
-	    j = clpinbyte(LPMAXSPIN2, lpt_data_port, lpt_stat_port);
-	    if (j == -1) {
-	        goto err;
-	    }
-
-	    len = bp - sc->sc_ifbuf;
-	    if (len <= CLPIPHDRLEN)
-	        goto err;
-
-	    sc->sc_iferrs = 0;
-
-	    if (IF_QFULL(&ipintrq)) {
-	        lprintf(("DROP"));
-	        IF_DROP(&ipintrq);
-		goto done;
-	    }
-	    len -= CLPIPHDRLEN;
-	    sc->sc_if.if_ipackets++;
-	    sc->sc_if.if_ibytes += len;
-	    top = m_devget(sc->sc_ifbuf + CLPIPHDRLEN, len, 0, &sc->sc_if, 0);
-	    if (top) {
-	        IF_ENQUEUE(&ipintrq, top);
-	        schednetisr(NETISR_IP);
-	    }
-	    goto done;
-	}
-	while ((inb(lpt_stat_port) & LPIP_SHAKE)) {
-	    len = sc->sc_if.if_mtu + LPIPHDRLEN;
-	    bp  = sc->sc_ifbuf;
-	    while (len--) {
-
-		cl = inb(lpt_stat_port);
-		outb(lpt_data_port, 8);
-
-		j = LPMAXSPIN2;
-		while((inb(lpt_stat_port) & LPIP_SHAKE))
-		    if(!--j) goto err;
-
-		c = inb(lpt_stat_port);
-		outb(lpt_data_port, 0);
-
-		*bp++= trecvh[cl] | trecvl[c];
-
-		j = LPMAXSPIN2;
-		while (!((cl=inb(lpt_stat_port)) & LPIP_SHAKE)) {
-		    if (cl != c &&
-			(((cl = inb(lpt_stat_port)) ^ 0xb8) & 0xf8) ==
-			  (c & 0xf8))
-			goto end;
-		    if (!--j) goto err;
-		}
-	    }
-
-	end:
-	    len = bp - sc->sc_ifbuf;
-	    if (len <= LPIPHDRLEN)
-		goto err;
-
-	    sc->sc_iferrs = 0;
-
-	    if (IF_QFULL(&ipintrq)) {
-		lprintf(("DROP"));
-		IF_DROP(&ipintrq);
-		goto done;
-	    }
-#if NBPFILTER > 0
-	    if (sc->sc_if.if_bpf) {
-		bpf_tap(&sc->sc_if, sc->sc_ifbuf, len);
-	    }
-#endif
-	    len -= LPIPHDRLEN;
-	    sc->sc_if.if_ipackets++;
-	    sc->sc_if.if_ibytes += len;
-	    top = m_devget(sc->sc_ifbuf + LPIPHDRLEN, len, 0, &sc->sc_if, 0);
-	    if (top) {
-		    IF_ENQUEUE(&ipintrq, top);
-		    schednetisr(NETISR_IP);
-	    }
-	}
-	goto done;
-
-    err:
-	outb(lpt_data_port, 0);
-	lprintf(("R"));
-	sc->sc_if.if_ierrors++;
-	sc->sc_iferrs++;
-
-	/*
-	 * We are not able to send receive anything for now,
-	 * so stop wasting our time
-	 */
-	if (sc->sc_iferrs > LPMAXERRS) {
-	    printf("lp%d: Too many errors, Going off-line.\n", unit);
-	    outb(lpt_ctrl_port, 0x00);
-	    sc->sc_if.if_flags &= ~IFF_RUNNING;
-	    sc->sc_iferrs=0;
-	}
-
-    done:
-	splx(s);
-	return;
-}
-
-static __inline int
-lpoutbyte (u_char byte, int spin, int data_port, int status_port)
-{
-    outb(data_port, txmith[byte]);
-    while (!(inb(status_port) & LPIP_SHAKE))
-	if (--spin == 0)
-		return 1;
-    outb(data_port, txmitl[byte]);
-    while (inb(status_port) & LPIP_SHAKE)
-	if (--spin == 0)
-		return 1;
-    return 0;
-}
-
-static int
-lpoutput (struct ifnet *ifp, struct mbuf *m,
-	  struct sockaddr *dst, struct rtentry *rt)
-{
-    register int lpt_data_port = lpt_sc[ifp->if_unit].sc_port + lpt_data;
-    register int lpt_stat_port = lpt_sc[ifp->if_unit].sc_port + lpt_status;
-	     int lpt_ctrl_port = lpt_sc[ifp->if_unit].sc_port + lpt_control;
-
-    int s, err;
-    struct mbuf *mm;
-    u_char *cp = "\0\0";
-    u_char chksum = 0;
-    int count = 0;
-    int i;
-    int spin;
-
-    /* We need a sensible value if we abort */
-    cp++;
-    ifp->if_flags |= IFF_RUNNING;
-
-    err = 1;			/* assume we're aborting because of an error */
-
-    s = splhigh();
-
-    /* Suspend (on laptops) or receive-errors might have taken us offline */
-    outb(lpt_ctrl_port, LPC_ENA);
-
-    if (ifp->if_flags & IFF_LINK0) {
-
-	if (!(inb(lpt_stat_port) & CLPIP_SHAKE)) {
-	    lprintf(("&"));
-	    lptintr(ifp->if_unit);
-	}
-
-	/* Alert other end to pending packet */
-	spin = LPMAXSPIN1;
-	outb(lpt_data_port, 0x08);
-	while ((inb(lpt_stat_port) & 0x08) == 0)
-		if (--spin == 0) {
-			goto nend;
-		}
-
-	/* Calculate length of packet, then send that */
-
-	count += 14;		/* Ethernet header len */
-
-	mm = m;
-	for (mm = m; mm; mm = mm->m_next) {
-		count += mm->m_len;
-	}
-	if (clpoutbyte(count & 0xFF, LPMAXSPIN1, lpt_data_port, lpt_stat_port))
-		goto nend;
-	if (clpoutbyte((count >> 8) & 0xFF, LPMAXSPIN1, lpt_data_port, lpt_stat_port))
-		goto nend;
-
-	/* Send dummy ethernet header */
-	for (i = 0; i < 12; i++) {
-		if (clpoutbyte(i, LPMAXSPIN1, lpt_data_port, lpt_stat_port))
-			goto nend;
-		chksum += i;
-	}
-
-	if (clpoutbyte(0x08, LPMAXSPIN1, lpt_data_port, lpt_stat_port))
-		goto nend;
-	if (clpoutbyte(0x00, LPMAXSPIN1, lpt_data_port, lpt_stat_port))
-		goto nend;
-	chksum += 0x08 + 0x00;		/* Add into checksum */
-
-	mm = m;
-	do {
-		cp = mtod(mm, u_char *);
-		while (mm->m_len--) {
-			chksum += *cp;
-			if (clpoutbyte(*cp++, LPMAXSPIN2, lpt_data_port, lpt_stat_port))
-				goto nend;
-		}
-	} while ((mm = mm->m_next));
-
-	/* Send checksum */
-	if (clpoutbyte(chksum, LPMAXSPIN2, lpt_data_port, lpt_stat_port))
-		goto nend;
-
-	/* Go quiescent */
-	outb(lpt_data_port, 0);
-
-	err = 0;			/* No errors */
-
-	nend:
-	if (err)  {				/* if we didn't timeout... */
-		ifp->if_oerrors++;
-		lprintf(("X"));
-	} else {
-		ifp->if_opackets++;
-		ifp->if_obytes += m->m_pkthdr.len;
-	}
-
-	m_freem(m);
-
-	if (!(inb(lpt_stat_port) & CLPIP_SHAKE)) {
-		lprintf(("^"));
-		lptintr(ifp->if_unit);
-	}
-	(void) splx(s);
-	return 0;
-    }
-
-    if (inb(lpt_stat_port) & LPIP_SHAKE) {
-        lprintf(("&"));
-        lptintr(ifp->if_unit);
-    }
-
-    if (lpoutbyte(0x08, LPMAXSPIN1, lpt_data_port, lpt_stat_port))
-        goto end;
-    if (lpoutbyte(0x00, LPMAXSPIN2, lpt_data_port, lpt_stat_port))
-        goto end;
-
-    mm = m;
-    do {
-        cp = mtod(mm,u_char *);
-        while (mm->m_len--)
-	    if (lpoutbyte(*cp++, LPMAXSPIN2, lpt_data_port, lpt_stat_port))
-	        goto end;
-    } while ((mm = mm->m_next));
-
-    err = 0;				/* no errors were encountered */
-
-    end:
-    --cp;
-    outb(lpt_data_port, txmitl[*cp] ^ 0x17);
-
-    if (err)  {				/* if we didn't timeout... */
-	ifp->if_oerrors++;
-        lprintf(("X"));
-    } else {
-	ifp->if_opackets++;
-	ifp->if_obytes += m->m_pkthdr.len;
-#if NBPFILTER > 0
-	if (ifp->if_bpf) {
-	    /*
-	     * We need to prepend the packet type as
-	     * a two byte field.  Cons up a dummy header
-	     * to pacify bpf.  This is safe because bpf
-	     * will only read from the mbuf (i.e., it won't
-	     * try to free it or keep a pointer to it).
-	     */
-	    struct mbuf m0;
-	    u_short hdr = 0x800;
-
-	    m0.m_next = m;
-	    m0.m_len = 2;
-	    m0.m_data = (char *)&hdr;
-
-	    bpf_mtap(ifp, &m0);
-	}
-#endif
-    }
-
-    m_freem(m);
-
-    if (inb(lpt_stat_port) & LPIP_SHAKE) {
-	lprintf(("^"));
-	lptintr(ifp->if_unit);
-    }
-
-    (void) splx(s);
-    return 0;
-}
-
-#endif /* INET */
-
-static lpt_devsw_installed = 0;
-
-static void 	lpt_drvinit(void *unused)
-{
-	dev_t dev;
-
-	if( ! lpt_devsw_installed ) {
-		dev = makedev(CDEV_MAJOR, 0);
-		cdevsw_add(&dev,&lpt_cdevsw, NULL);
-		lpt_devsw_installed = 1;
-    	}
-}
-
-SYSINIT(lptdev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,lpt_drvinit,NULL)
-