ni5010: Move the Racal-Interlan (Micom) driver

Moves the Racal-Interlan driver into drivers/net/ethernet/racal/ and
make the necessary Kconfig and Makefile changes.

CC: "Jan-Pascal van Best" <janpascal@vanbest.org>
CC: Andreas Mohr <andi@lisas.de>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

4 files changed, 952 insertions, 0 deletions

diff --git a/drivers/net/ethernet/racal/Kconfig b/drivers/net/ethernet/racal/Kconfig
new file mode 100644
index 00000000000..45d493036ce
--- /dev/null
+++ b/drivers/net/ethernet/racal/Kconfig
@@ -0,0 +1,32 @@
+#
+# Racal-Interlan device configuration
+#
+
+config NET_VENDOR_RACAL
+	bool "Racal-Interlan (Micom) NI devices"
+	depends on ISA
+	---help---
+	  If you have a network (Ethernet) card belonging to this class, such
+	  as the NI5010, NI5210 or NI6210, say Y and read the Ethernet-HOWTO,
+	  available from <http://www.tldp.org/docs.html#howto>.
+
+	  Note that the answer to this question doesn't directly affect the
+	  kernel: saying N will just cause the configurator to skip all
+	  the questions about NI cards. If you say Y, you will be asked for
+	  your specific card in the following questions.
+
+if NET_VENDOR_RACAL
+
+config NI5010
+	tristate "NI5010 support (EXPERIMENTAL)"
+	depends on ISA && EXPERIMENTAL && BROKEN_ON_SMP
+	---help---
+	  If you have a network (Ethernet) card of this type, say Y and read
+	  the Ethernet-HOWTO, available from
+	  <http://www.tldp.org/docs.html#howto>. Note that this is still
+	  experimental code.
+
+	  To compile this driver as a module, choose M here. The module
+	  will be called ni5010.
+
+endif # NET_VENDOR_RACAL
diff --git a/drivers/net/ethernet/racal/Makefile b/drivers/net/ethernet/racal/Makefile
new file mode 100644
index 00000000000..1e210ca1d78
--- /dev/null
+++ b/drivers/net/ethernet/racal/Makefile
@@ -0,0 +1,5 @@
+#
+# Makefile for the Racal-Interlan network device drivers.
+#
+
+obj-$(CONFIG_NI5010) += ni5010.o
diff --git a/drivers/net/ethernet/racal/ni5010.c b/drivers/net/ethernet/racal/ni5010.c
new file mode 100644
index 00000000000..4d3f2e2b28b
--- /dev/null
+++ b/drivers/net/ethernet/racal/ni5010.c
@@ -0,0 +1,771 @@
+/*	ni5010.c: A network driver for the MiCom-Interlan NI5010 ethercard.
+ *
+ *	Copyright 1996,1997,2006 Jan-Pascal van Best and Andreas Mohr.
+ *
+ *	This software may be used and distributed according to the terms
+ *	of the GNU General Public License, incorporated herein by reference.
+ *
+ * 	The authors may be reached as:
+ *		janpascal@vanbest.org		andi@lisas.de
+ *
+ *	Sources:
+ * 	 	Donald Becker's "skeleton.c"
+ *  		Crynwr ni5010 packet driver
+ *
+ *	Changes:
+ *		v0.0: First test version
+ *		v0.1: First working version
+ *		v0.2:
+ *		v0.3->v0.90: Now demand setting io and irq when loading as module
+ *	970430	v0.91: modified for Linux 2.1.14
+ *		v0.92: Implemented Andreas' (better) NI5010 probe
+ *	970503	v0.93: Fixed auto-irq failure on warm reboot (JB)
+ *	970623	v1.00: First kernel version (AM)
+ *	970814	v1.01: Added detection of onboard receive buffer size (AM)
+ *	060611	v1.02: slight cleanup: email addresses, driver modernization.
+ *	Bugs:
+ *		- not SMP-safe (no locking of I/O accesses)
+ *		- Note that you have to patch ifconfig for the new /proc/net/dev
+ *		format. It gives incorrect stats otherwise.
+ *
+ *	To do:
+ *		Fix all bugs :-)
+ *		Move some stuff to chipset_init()
+ *		Handle xmt errors other than collisions
+ *		Complete merge with Andreas' driver
+ *		Implement ring buffers (Is this useful? You can't squeeze
+ *			too many packet in a 2k buffer!)
+ *		Implement DMA (Again, is this useful? Some docs say DMA is
+ *			slower than programmed I/O)
+ *
+ *	Compile with:
+ *		gcc -O2 -fomit-frame-pointer -m486 -D__KERNEL__ \
+ *			-DMODULE -c ni5010.c
+ *
+ *	Insert with e.g.:
+ *		insmod ni5010.ko io=0x300 irq=5
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/errno.h>
+#include <linux/ioport.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/bitops.h>
+#include <asm/io.h>
+#include <asm/dma.h>
+
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+
+#include "ni5010.h"
+
+static const char boardname[] = "NI5010";
+static char version[] __initdata =
+	"ni5010.c: v1.02 20060611 Jan-Pascal van Best and Andreas Mohr\n";
+
+/* bufsize_rcv == 0 means autoprobing */
+static unsigned int bufsize_rcv;
+
+#define JUMPERED_INTERRUPTS	/* IRQ line jumpered on board */
+#undef JUMPERED_DMA		/* No DMA used */
+#undef FULL_IODETECT		/* Only detect in portlist */
+
+#ifndef FULL_IODETECT
+/* A zero-terminated list of I/O addresses to be probed. */
+static unsigned int ports[] __initdata =
+	{ 0x300, 0x320, 0x340, 0x360, 0x380, 0x3a0, 0 };
+#endif
+
+/* Use 0 for production, 1 for verification, >2 for debug */
+#ifndef NI5010_DEBUG
+#define NI5010_DEBUG 0
+#endif
+
+/* Information that needs to be kept for each board. */
+struct ni5010_local {
+	int o_pkt_size;
+	spinlock_t lock;
+};
+
+/* Index to functions, as function prototypes. */
+
+static int	ni5010_probe1(struct net_device *dev, int ioaddr);
+static int	ni5010_open(struct net_device *dev);
+static int	ni5010_send_packet(struct sk_buff *skb, struct net_device *dev);
+static irqreturn_t ni5010_interrupt(int irq, void *dev_id);
+static void	ni5010_rx(struct net_device *dev);
+static void	ni5010_timeout(struct net_device *dev);
+static int	ni5010_close(struct net_device *dev);
+static void 	ni5010_set_multicast_list(struct net_device *dev);
+static void	reset_receiver(struct net_device *dev);
+
+static int	process_xmt_interrupt(struct net_device *dev);
+#define tx_done(dev) 1
+static void	hardware_send_packet(struct net_device *dev, char *buf, int length, int pad);
+static void 	chipset_init(struct net_device *dev, int startp);
+static void	dump_packet(void *buf, int len);
+static void 	ni5010_show_registers(struct net_device *dev);
+
+static int io;
+static int irq;
+
+struct net_device * __init ni5010_probe(int unit)
+{
+	struct net_device *dev = alloc_etherdev(sizeof(struct ni5010_local));
+	int *port;
+	int err = 0;
+
+	if (!dev)
+		return ERR_PTR(-ENOMEM);
+
+	if (unit >= 0) {
+		sprintf(dev->name, "eth%d", unit);
+		netdev_boot_setup_check(dev);
+		io = dev->base_addr;
+		irq = dev->irq;
+	}
+
+	PRINTK2((KERN_DEBUG "%s: Entering ni5010_probe\n", dev->name));
+
+	if (io > 0x1ff)	{	/* Check a single specified location. */
+		err = ni5010_probe1(dev, io);
+	} else if (io != 0) {	/* Don't probe at all. */
+		err = -ENXIO;
+	} else {
+#ifdef FULL_IODETECT
+		for (io=0x200; io<0x400 && ni5010_probe1(dev, io) ; io+=0x20)
+			;
+		if (io == 0x400)
+			err = -ENODEV;
+
+#else
+		for (port = ports; *port && ni5010_probe1(dev, *port); port++)
+			;
+		if (!*port)
+			err = -ENODEV;
+#endif	/* FULL_IODETECT */
+	}
+	if (err)
+		goto out;
+	err = register_netdev(dev);
+	if (err)
+		goto out1;
+	return dev;
+out1:
+	release_region(dev->base_addr, NI5010_IO_EXTENT);
+out:
+	free_netdev(dev);
+	return ERR_PTR(err);
+}
+
+static inline int rd_port(int ioaddr)
+{
+	inb(IE_RBUF);
+	return inb(IE_SAPROM);
+}
+
+static void __init trigger_irq(int ioaddr)
+{
+		outb(0x00, EDLC_RESET);	/* Clear EDLC hold RESET state */
+		outb(0x00, IE_RESET);	/* Board reset */
+		outb(0x00, EDLC_XMASK);	/* Disable all Xmt interrupts */
+		outb(0x00, EDLC_RMASK); /* Disable all Rcv interrupt */
+		outb(0xff, EDLC_XCLR);	/* Clear all pending Xmt interrupts */
+		outb(0xff, EDLC_RCLR);	/* Clear all pending Rcv interrupts */
+		/*
+		 * Transmit packet mode: Ignore parity, Power xcvr,
+		 * 	Enable loopback
+		 */
+		outb(XMD_IG_PAR | XMD_T_MODE | XMD_LBC, EDLC_XMODE);
+		outb(RMD_BROADCAST, EDLC_RMODE); /* Receive normal&broadcast */
+		outb(XM_ALL, EDLC_XMASK);	/* Enable all Xmt interrupts */
+		udelay(50);			/* FIXME: Necessary? */
+		outb(MM_EN_XMT|MM_MUX, IE_MMODE); /* Start transmission */
+}
+
+static const struct net_device_ops ni5010_netdev_ops = {
+	.ndo_open		= ni5010_open,
+	.ndo_stop		= ni5010_close,
+	.ndo_start_xmit		= ni5010_send_packet,
+	.ndo_set_multicast_list	= ni5010_set_multicast_list,
+	.ndo_tx_timeout		= ni5010_timeout,
+	.ndo_validate_addr	= eth_validate_addr,
+	.ndo_set_mac_address	= eth_mac_addr,
+	.ndo_change_mtu		= eth_change_mtu,
+};
+
+/*
+ *      This is the real probe routine.  Linux has a history of friendly device
+ *      probes on the ISA bus.  A good device probes avoids doing writes, and
+ *      verifies that the correct device exists and functions.
+ */
+
+static int __init ni5010_probe1(struct net_device *dev, int ioaddr)
+{
+	static unsigned version_printed;
+	struct ni5010_local *lp;
+	int i;
+	unsigned int data = 0;
+	int boguscount = 40;
+	int err = -ENODEV;
+
+	dev->base_addr = ioaddr;
+	dev->irq = irq;
+
+	if (!request_region(ioaddr, NI5010_IO_EXTENT, boardname))
+		return -EBUSY;
+
+	/*
+	 * This is no "official" probe method, I've rather tested which
+	 * probe works best with my seven NI5010 cards
+	 * (they have very different serial numbers)
+	 * Suggestions or failure reports are very, very welcome !
+	 * But I think it is a relatively good probe method
+	 * since it doesn't use any "outb"
+	 * It should be nearly 100% reliable !
+	 * well-known WARNING: this probe method (like many others)
+	 * will hang the system if a NE2000 card region is probed !
+	 *
+	 *   - Andreas
+	 */
+
+ 	PRINTK2((KERN_DEBUG "%s: entering ni5010_probe1(%#3x)\n",
+ 		dev->name, ioaddr));
+
+	if (inb(ioaddr+0) == 0xff)
+		goto out;
+
+	while ( (rd_port(ioaddr) & rd_port(ioaddr) & rd_port(ioaddr) &
+		 rd_port(ioaddr) & rd_port(ioaddr) & rd_port(ioaddr)) != 0xff)
+	{
+		if (boguscount-- == 0)
+			goto out;
+	}
+
+	PRINTK2((KERN_DEBUG "%s: I/O #1 passed!\n", dev->name));
+
+	for (i=0; i<32; i++)
+		if ( (data = rd_port(ioaddr)) != 0xff) break;
+	if (data==0xff)
+		goto out;
+
+	PRINTK2((KERN_DEBUG "%s: I/O #2 passed!\n", dev->name));
+
+	if ((data != SA_ADDR0) || (rd_port(ioaddr) != SA_ADDR1) ||
+	    (rd_port(ioaddr) != SA_ADDR2))
+		goto out;
+
+	for (i=0; i<4; i++)
+		rd_port(ioaddr);
+
+	if ( (rd_port(ioaddr) != NI5010_MAGICVAL1) ||
+	     (rd_port(ioaddr) != NI5010_MAGICVAL2) )
+		goto out;
+
+	PRINTK2((KERN_DEBUG "%s: I/O #3 passed!\n", dev->name));
+
+	if (NI5010_DEBUG && version_printed++ == 0)
+		printk(KERN_INFO "%s", version);
+
+	printk("NI5010 ethercard probe at 0x%x: ", ioaddr);
+
+	dev->base_addr = ioaddr;
+
+	for (i=0; i<6; i++) {
+		outw(i, IE_GP);
+		dev->dev_addr[i] = inb(IE_SAPROM);
+	}
+	printk("%pM ", dev->dev_addr);
+
+	PRINTK2((KERN_DEBUG "%s: I/O #4 passed!\n", dev->name));
+
+#ifdef JUMPERED_INTERRUPTS
+	if (dev->irq == 0xff)
+		;
+	else if (dev->irq < 2) {
+		unsigned long irq_mask;
+
+		PRINTK2((KERN_DEBUG "%s: I/O #5 passed!\n", dev->name));
+
+		irq_mask = probe_irq_on();
+		trigger_irq(ioaddr);
+		mdelay(20);
+		dev->irq = probe_irq_off(irq_mask);
+
+		PRINTK2((KERN_DEBUG "%s: I/O #6 passed!\n", dev->name));
+
+		if (dev->irq == 0) {
+			err = -EAGAIN;
+			printk(KERN_WARNING "%s: no IRQ found!\n", dev->name);
+			goto out;
+		}
+		PRINTK2((KERN_DEBUG "%s: I/O #7 passed!\n", dev->name));
+	} else if (dev->irq == 2) {
+		dev->irq = 9;
+	}
+#endif	/* JUMPERED_INTERRUPTS */
+	PRINTK2((KERN_DEBUG "%s: I/O #9 passed!\n", dev->name));
+
+	/* DMA is not supported (yet?), so no use detecting it */
+	lp = netdev_priv(dev);
+
+	spin_lock_init(&lp->lock);
+
+	PRINTK2((KERN_DEBUG "%s: I/O #10 passed!\n", dev->name));
+
+/* get the size of the onboard receive buffer
+ * higher addresses than bufsize are wrapped into real buffer
+ * i.e. data for offs. 0x801 is written to 0x1 with a 2K onboard buffer
+ */
+	if (!bufsize_rcv) {
+        	outb(1, IE_MMODE);      /* Put Rcv buffer on system bus */
+        	outw(0, IE_GP);		/* Point GP at start of packet */
+        	outb(0, IE_RBUF);	/* set buffer byte 0 to 0 */
+        	for (i = 1; i < 0xff; i++) {
+                	outw(i << 8, IE_GP); /* Point GP at packet size to be tested */
+                	outb(i, IE_RBUF);
+                	outw(0x0, IE_GP); /* Point GP at start of packet */
+                	data = inb(IE_RBUF);
+                	if (data == i) break;
+        	}
+		bufsize_rcv = i << 8;
+        	outw(0, IE_GP);		/* Point GP at start of packet */
+        	outb(0, IE_RBUF);	/* set buffer byte 0 to 0 again */
+	}
+        printk("-> bufsize rcv/xmt=%d/%d\n", bufsize_rcv, NI5010_BUFSIZE);
+
+	dev->netdev_ops		= &ni5010_netdev_ops;
+	dev->watchdog_timeo	= HZ/20;
+
+	dev->flags &= ~IFF_MULTICAST;	/* Multicast doesn't work */
+
+	/* Shut up the ni5010 */
+	outb(0, EDLC_RMASK);	/* Mask all receive interrupts */
+	outb(0, EDLC_XMASK);	/* Mask all xmit interrupts */
+	outb(0xff, EDLC_RCLR);	/* Kill all pending rcv interrupts */
+	outb(0xff, EDLC_XCLR); 	/* Kill all pending xmt interrupts */
+
+	printk(KERN_INFO "%s: NI5010 found at 0x%x, using IRQ %d", dev->name, ioaddr, dev->irq);
+	if (dev->dma)
+		printk(" & DMA %d", dev->dma);
+	printk(".\n");
+	return 0;
+out:
+	release_region(dev->base_addr, NI5010_IO_EXTENT);
+	return err;
+}
+
+/*
+ * Open/initialize the board.  This is called (in the current kernel)
+ * sometime after booting when the 'ifconfig' program is run.
+ *
+ * This routine should set everything up anew at each open, even
+ * registers that "should" only need to be set once at boot, so that
+ * there is a non-reboot way to recover if something goes wrong.
+ */
+
+static int ni5010_open(struct net_device *dev)
+{
+	int ioaddr = dev->base_addr;
+	int i;
+
+	PRINTK2((KERN_DEBUG "%s: entering ni5010_open()\n", dev->name));
+
+	if (request_irq(dev->irq, ni5010_interrupt, 0, boardname, dev)) {
+		printk(KERN_WARNING "%s: Cannot get irq %#2x\n", dev->name, dev->irq);
+		return -EAGAIN;
+	}
+	PRINTK3((KERN_DEBUG "%s: passed open() #1\n", dev->name));
+        /*
+         * Always allocate the DMA channel after the IRQ,
+         * and clean up on failure.
+         */
+#ifdef JUMPERED_DMA
+        if (request_dma(dev->dma, cardname)) {
+		printk(KERN_WARNING "%s: Cannot get dma %#2x\n", dev->name, dev->dma);
+                free_irq(dev->irq, NULL);
+                return -EAGAIN;
+        }
+#endif	/* JUMPERED_DMA */
+
+	PRINTK3((KERN_DEBUG "%s: passed open() #2\n", dev->name));
+	/* Reset the hardware here.  Don't forget to set the station address. */
+
+	outb(RS_RESET, EDLC_RESET);	/* Hold up EDLC_RESET while configing board */
+	outb(0, IE_RESET);		/* Hardware reset of ni5010 board */
+	outb(XMD_LBC, EDLC_XMODE);	/* Only loopback xmits */
+
+	PRINTK3((KERN_DEBUG "%s: passed open() #3\n", dev->name));
+	/* Set the station address */
+	for(i = 0;i < 6; i++) {
+		outb(dev->dev_addr[i], EDLC_ADDR + i);
+	}
+
+	PRINTK3((KERN_DEBUG "%s: Initialising ni5010\n", dev->name));
+	outb(0, EDLC_XMASK);	/* No xmit interrupts for now */
+	outb(XMD_IG_PAR | XMD_T_MODE | XMD_LBC, EDLC_XMODE);
+				/* Normal packet xmit mode */
+	outb(0xff, EDLC_XCLR);	/* Clear all pending xmit interrupts */
+	outb(RMD_BROADCAST, EDLC_RMODE);
+				/* Receive broadcast and normal packets */
+	reset_receiver(dev);	/* Ready ni5010 for receiving packets */
+
+	outb(0, EDLC_RESET);	/* Un-reset the ni5010 */
+
+	netif_start_queue(dev);
+
+	if (NI5010_DEBUG) ni5010_show_registers(dev);
+
+	PRINTK((KERN_DEBUG "%s: open successful\n", dev->name));
+     	return 0;
+}
+
+static void reset_receiver(struct net_device *dev)
+{
+	int ioaddr = dev->base_addr;
+
+	PRINTK3((KERN_DEBUG "%s: resetting receiver\n", dev->name));
+	outw(0, IE_GP);		/* Receive packet at start of buffer */
+	outb(0xff, EDLC_RCLR);	/* Clear all pending rcv interrupts */
+	outb(0, IE_MMODE);	/* Put EDLC to rcv buffer */
+	outb(MM_EN_RCV, IE_MMODE); /* Enable rcv */
+	outb(0xff, EDLC_RMASK);	/* Enable all rcv interrupts */
+}
+
+static void ni5010_timeout(struct net_device *dev)
+{
+	printk(KERN_WARNING "%s: transmit timed out, %s?\n", dev->name,
+		   tx_done(dev) ? "IRQ conflict" : "network cable problem");
+	/* Try to restart the adaptor. */
+	/* FIXME: Give it a real kick here */
+	chipset_init(dev, 1);
+	dev->trans_start = jiffies; /* prevent tx timeout */
+	netif_wake_queue(dev);
+}
+
+static int ni5010_send_packet(struct sk_buff *skb, struct net_device *dev)
+{
+	int length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
+
+	PRINTK2((KERN_DEBUG "%s: entering ni5010_send_packet\n", dev->name));
+
+	/*
+         * Block sending
+	 */
+
+	netif_stop_queue(dev);
+	hardware_send_packet(dev, (unsigned char *)skb->data, skb->len, length-skb->len);
+	dev_kfree_skb (skb);
+	return NETDEV_TX_OK;
+}
+
+/*
+ * The typical workload of the driver:
+ * Handle the network interface interrupts.
+ */
+static irqreturn_t ni5010_interrupt(int irq, void *dev_id)
+{
+	struct net_device *dev = dev_id;
+	struct ni5010_local *lp;
+	int ioaddr, status;
+	int xmit_was_error = 0;
+
+	PRINTK2((KERN_DEBUG "%s: entering ni5010_interrupt\n", dev->name));
+
+	ioaddr = dev->base_addr;
+	lp = netdev_priv(dev);
+
+	spin_lock(&lp->lock);
+	status = inb(IE_ISTAT);
+	PRINTK3((KERN_DEBUG "%s: IE_ISTAT = %#02x\n", dev->name, status));
+
+        if ((status & IS_R_INT) == 0) ni5010_rx(dev);
+
+        if ((status & IS_X_INT) == 0) {
+                xmit_was_error = process_xmt_interrupt(dev);
+        }
+
+        if ((status & IS_DMA_INT) == 0) {
+                PRINTK((KERN_DEBUG "%s: DMA complete (?)\n", dev->name));
+                outb(0, IE_DMA_RST); /* Reset DMA int */
+        }
+
+	if (!xmit_was_error)
+		reset_receiver(dev);
+	spin_unlock(&lp->lock);
+	return IRQ_HANDLED;
+}
+
+
+static void dump_packet(void *buf, int len)
+{
+	int i;
+
+	printk(KERN_DEBUG "Packet length = %#4x\n", len);
+	for (i = 0; i < len; i++){
+		if (i % 16 == 0) printk(KERN_DEBUG "%#4.4x", i);
+		if (i % 2 == 0) printk(" ");
+		printk("%2.2x", ((unsigned char *)buf)[i]);
+		if (i % 16 == 15) printk("\n");
+	}
+	printk("\n");
+}
+
+/* We have a good packet, get it out of the buffer. */
+static void ni5010_rx(struct net_device *dev)
+{
+	int ioaddr = dev->base_addr;
+	unsigned char rcv_stat;
+	struct sk_buff *skb;
+	int i_pkt_size;
+
+	PRINTK2((KERN_DEBUG "%s: entering ni5010_rx()\n", dev->name));
+
+	rcv_stat = inb(EDLC_RSTAT);
+	PRINTK3((KERN_DEBUG "%s: EDLC_RSTAT = %#2x\n", dev->name, rcv_stat));
+
+	if ( (rcv_stat & RS_VALID_BITS) != RS_PKT_OK) {
+		PRINTK((KERN_INFO "%s: receive error.\n", dev->name));
+		dev->stats.rx_errors++;
+		if (rcv_stat & RS_RUNT) dev->stats.rx_length_errors++;
+		if (rcv_stat & RS_ALIGN) dev->stats.rx_frame_errors++;
+		if (rcv_stat & RS_CRC_ERR) dev->stats.rx_crc_errors++;
+		if (rcv_stat & RS_OFLW) dev->stats.rx_fifo_errors++;
+        	outb(0xff, EDLC_RCLR); /* Clear the interrupt */
+		return;
+	}
+
+        outb(0xff, EDLC_RCLR);  /* Clear the interrupt */
+
+	i_pkt_size = inw(IE_RCNT);
+	if (i_pkt_size > ETH_FRAME_LEN || i_pkt_size < 10 ) {
+		PRINTK((KERN_DEBUG "%s: Packet size error, packet size = %#4.4x\n",
+			dev->name, i_pkt_size));
+		dev->stats.rx_errors++;
+		dev->stats.rx_length_errors++;
+		return;
+	}
+
+	/* Malloc up new buffer. */
+	skb = dev_alloc_skb(i_pkt_size + 3);
+	if (skb == NULL) {
+		printk(KERN_WARNING "%s: Memory squeeze, dropping packet.\n", dev->name);
+		dev->stats.rx_dropped++;
+		return;
+	}
+
+	skb_reserve(skb, 2);
+
+	/* Read packet into buffer */
+        outb(MM_MUX, IE_MMODE); /* Rcv buffer to system bus */
+	outw(0, IE_GP);	/* Seek to beginning of packet */
+	insb(IE_RBUF, skb_put(skb, i_pkt_size), i_pkt_size);
+
+	if (NI5010_DEBUG >= 4)
+		dump_packet(skb->data, skb->len);
+
+	skb->protocol = eth_type_trans(skb,dev);
+	netif_rx(skb);
+	dev->stats.rx_packets++;
+	dev->stats.rx_bytes += i_pkt_size;
+
+	PRINTK2((KERN_DEBUG "%s: Received packet, size=%#4.4x\n",
+		dev->name, i_pkt_size));
+}
+
+static int process_xmt_interrupt(struct net_device *dev)
+{
+	struct ni5010_local *lp = netdev_priv(dev);
+	int ioaddr = dev->base_addr;
+	int xmit_stat;
+
+	PRINTK2((KERN_DEBUG "%s: entering process_xmt_interrupt\n", dev->name));
+
+	xmit_stat = inb(EDLC_XSTAT);
+	PRINTK3((KERN_DEBUG "%s: EDLC_XSTAT = %2.2x\n", dev->name, xmit_stat));
+
+	outb(0, EDLC_XMASK);	/* Disable xmit IRQ's */
+	outb(0xff, EDLC_XCLR);	/* Clear all pending xmit IRQ's */
+
+	if (xmit_stat & XS_COLL){
+		PRINTK((KERN_DEBUG "%s: collision detected, retransmitting\n",
+			dev->name));
+		outw(NI5010_BUFSIZE - lp->o_pkt_size, IE_GP);
+		/* outb(0, IE_MMODE); */ /* xmt buf on sysbus FIXME: needed ? */
+		outb(MM_EN_XMT | MM_MUX, IE_MMODE);
+		outb(XM_ALL, EDLC_XMASK); /* Enable xmt IRQ's */
+		dev->stats.collisions++;
+		return 1;
+	}
+
+	/* FIXME: handle other xmt error conditions */
+
+	dev->stats.tx_packets++;
+	dev->stats.tx_bytes += lp->o_pkt_size;
+	netif_wake_queue(dev);
+
+	PRINTK2((KERN_DEBUG "%s: sent packet, size=%#4.4x\n",
+		dev->name, lp->o_pkt_size));
+
+	return 0;
+}
+
+/* The inverse routine to ni5010_open(). */
+static int ni5010_close(struct net_device *dev)
+{
+	int ioaddr = dev->base_addr;
+
+	PRINTK2((KERN_DEBUG "%s: entering ni5010_close\n", dev->name));
+#ifdef JUMPERED_INTERRUPTS
+	free_irq(dev->irq, NULL);
+#endif
+	/* Put card in held-RESET state */
+	outb(0, IE_MMODE);
+	outb(RS_RESET, EDLC_RESET);
+
+	netif_stop_queue(dev);
+
+	PRINTK((KERN_DEBUG "%s: %s closed down\n", dev->name, boardname));
+	return 0;
+
+}
+
+/* Set or clear the multicast filter for this adaptor.
+   num_addrs == -1      Promiscuous mode, receive all packets
+   num_addrs == 0       Normal mode, clear multicast list
+   num_addrs > 0        Multicast mode, receive normal and MC packets, and do
+                        best-effort filtering.
+*/
+static void ni5010_set_multicast_list(struct net_device *dev)
+{
+	short ioaddr = dev->base_addr;
+
+	PRINTK2((KERN_DEBUG "%s: entering set_multicast_list\n", dev->name));
+
+	if (dev->flags & IFF_PROMISC || dev->flags & IFF_ALLMULTI ||
+	    !netdev_mc_empty(dev)) {
+		outb(RMD_PROMISC, EDLC_RMODE); /* Enable promiscuous mode */
+		PRINTK((KERN_DEBUG "%s: Entering promiscuous mode\n", dev->name));
+	} else {
+		PRINTK((KERN_DEBUG "%s: Entering broadcast mode\n", dev->name));
+		outb(RMD_BROADCAST, EDLC_RMODE);  /* Disable promiscuous mode, use normal mode */
+	}
+}
+
+static void hardware_send_packet(struct net_device *dev, char *buf, int length, int pad)
+{
+	struct ni5010_local *lp = netdev_priv(dev);
+	int ioaddr = dev->base_addr;
+	unsigned long flags;
+	unsigned int buf_offs;
+
+	PRINTK2((KERN_DEBUG "%s: entering hardware_send_packet\n", dev->name));
+
+        if (length > ETH_FRAME_LEN) {
+                PRINTK((KERN_WARNING "%s: packet too large, not possible\n",
+                        dev->name));
+                return;
+        }
+
+	if (NI5010_DEBUG) ni5010_show_registers(dev);
+
+	if (inb(IE_ISTAT) & IS_EN_XMT) {
+		PRINTK((KERN_WARNING "%s: sending packet while already transmitting, not possible\n",
+			dev->name));
+		return;
+	}
+
+	if (NI5010_DEBUG > 3) dump_packet(buf, length);
+
+	buf_offs = NI5010_BUFSIZE - length - pad;
+
+	spin_lock_irqsave(&lp->lock, flags);
+	lp->o_pkt_size = length + pad;
+
+	outb(0, EDLC_RMASK);	/* Mask all receive interrupts */
+	outb(0, IE_MMODE);	/* Put Xmit buffer on system bus */
+	outb(0xff, EDLC_RCLR);	/* Clear out pending rcv interrupts */
+
+	outw(buf_offs, IE_GP); /* Point GP at start of packet */
+	outsb(IE_XBUF, buf, length); /* Put data in buffer */
+	while(pad--)
+		outb(0, IE_XBUF);
+
+	outw(buf_offs, IE_GP); /* Rewrite where packet starts */
+
+	/* should work without that outb() (Crynwr used it) */
+	/*outb(MM_MUX, IE_MMODE);*/ /* Xmt buffer to EDLC bus */
+	outb(MM_EN_XMT | MM_MUX, IE_MMODE); /* Begin transmission */
+	outb(XM_ALL, EDLC_XMASK); /* Cause interrupt after completion or fail */
+
+	spin_unlock_irqrestore(&lp->lock, flags);
+
+	netif_wake_queue(dev);
+
+	if (NI5010_DEBUG) ni5010_show_registers(dev);
+}
+
+static void chipset_init(struct net_device *dev, int startp)
+{
+	/* FIXME: Move some stuff here */
+	PRINTK3((KERN_DEBUG "%s: doing NOTHING in chipset_init\n", dev->name));
+}
+
+static void ni5010_show_registers(struct net_device *dev)
+{
+	int ioaddr = dev->base_addr;
+
+	PRINTK3((KERN_DEBUG "%s: XSTAT %#2.2x\n", dev->name, inb(EDLC_XSTAT)));
+	PRINTK3((KERN_DEBUG "%s: XMASK %#2.2x\n", dev->name, inb(EDLC_XMASK)));
+	PRINTK3((KERN_DEBUG "%s: RSTAT %#2.2x\n", dev->name, inb(EDLC_RSTAT)));
+	PRINTK3((KERN_DEBUG "%s: RMASK %#2.2x\n", dev->name, inb(EDLC_RMASK)));
+	PRINTK3((KERN_DEBUG "%s: RMODE %#2.2x\n", dev->name, inb(EDLC_RMODE)));
+	PRINTK3((KERN_DEBUG "%s: XMODE %#2.2x\n", dev->name, inb(EDLC_XMODE)));
+	PRINTK3((KERN_DEBUG "%s: ISTAT %#2.2x\n", dev->name, inb(IE_ISTAT)));
+}
+
+#ifdef MODULE
+static struct net_device *dev_ni5010;
+
+module_param(io, int, 0);
+module_param(irq, int, 0);
+MODULE_PARM_DESC(io, "ni5010 I/O base address");
+MODULE_PARM_DESC(irq, "ni5010 IRQ number");
+
+static int __init ni5010_init_module(void)
+{
+	PRINTK2((KERN_DEBUG "%s: entering init_module\n", boardname));
+	/*
+	if(io <= 0 || irq == 0){
+	   	printk(KERN_WARNING "%s: Autoprobing not allowed for modules.\n", boardname);
+		printk(KERN_WARNING "%s: Set symbols 'io' and 'irq'\n", boardname);
+	   	return -EINVAL;
+	}
+	*/
+	if (io <= 0){
+		printk(KERN_WARNING "%s: Autoprobing for modules is hazardous, trying anyway..\n", boardname);
+	}
+
+	PRINTK2((KERN_DEBUG "%s: init_module irq=%#2x, io=%#3x\n", boardname, irq, io));
+	dev_ni5010 = ni5010_probe(-1);
+	if (IS_ERR(dev_ni5010))
+		return PTR_ERR(dev_ni5010);
+        return 0;
+}
+
+static void __exit ni5010_cleanup_module(void)
+{
+	PRINTK2((KERN_DEBUG "%s: entering cleanup_module\n", boardname));
+	unregister_netdev(dev_ni5010);
+	release_region(dev_ni5010->base_addr, NI5010_IO_EXTENT);
+	free_netdev(dev_ni5010);
+}
+module_init(ni5010_init_module);
+module_exit(ni5010_cleanup_module);
+#endif /* MODULE */
+MODULE_LICENSE("GPL");
diff --git a/drivers/net/ethernet/racal/ni5010.h b/drivers/net/ethernet/racal/ni5010.h
new file mode 100644
index 00000000000..e10e717fcd7
--- /dev/null
+++ b/drivers/net/ethernet/racal/ni5010.h
@@ -0,0 +1,144 @@
+/*
+ * Racal-Interlan ni5010 Ethernet definitions
+ *
+ * This is an extension to the Linux operating system, and is covered by the
+ * same GNU General Public License that covers that work.
+ *
+ * copyrights (c) 1996 by Jan-Pascal van Best (jvbest@wi.leidenuniv.nl)
+ *
+ * I have done a look in the following sources:
+ *   crynwr-packet-driver by Russ Nelson
+ */
+
+#define NI5010_BUFSIZE	2048	/* number of bytes in a buffer */
+
+#define NI5010_MAGICVAL0 0x00  /* magic-values for ni5010 card */
+#define NI5010_MAGICVAL1 0x55
+#define NI5010_MAGICVAL2 0xAA
+
+#define SA_ADDR0 0x02
+#define SA_ADDR1 0x07
+#define SA_ADDR2 0x01
+
+/* The number of low I/O ports used by the ni5010 ethercard. */
+#define NI5010_IO_EXTENT       32
+
+#define PRINTK(x) if (NI5010_DEBUG) printk x
+#define PRINTK2(x) if (NI5010_DEBUG>=2) printk x
+#define PRINTK3(x) if (NI5010_DEBUG>=3) printk x
+
+/* The various IE command registers */
+#define EDLC_XSTAT	(ioaddr + 0x00)	/* EDLC transmit csr */
+#define EDLC_XCLR	(ioaddr + 0x00)	/* EDLC transmit "Clear IRQ" */
+#define EDLC_XMASK	(ioaddr + 0x01)	/* EDLC transmit "IRQ Masks" */
+#define EDLC_RSTAT	(ioaddr + 0x02)	/* EDLC receive csr */
+#define EDLC_RCLR	(ioaddr + 0x02)	/* EDLC receive "Clear IRQ" */
+#define EDLC_RMASK	(ioaddr + 0x03)	/* EDLC receive "IRQ Masks" */
+#define EDLC_XMODE	(ioaddr + 0x04)	/* EDLC transmit Mode */
+#define EDLC_RMODE	(ioaddr + 0x05)	/* EDLC receive Mode */
+#define EDLC_RESET	(ioaddr + 0x06)	/* EDLC RESET register */
+#define EDLC_TDR1	(ioaddr + 0x07)	/* "Time Domain Reflectometry" reg1 */
+#define EDLC_ADDR	(ioaddr + 0x08)	/* EDLC station address, 6 bytes */
+	 			/* 0x0E doesn't exist for r/w */
+#define EDLC_TDR2	(ioaddr + 0x0f)	/* "Time Domain Reflectometry" reg2 */
+#define IE_GP		(ioaddr + 0x10)	/* GP pointer (word register) */
+				/* 0x11 is 2nd byte of GP Pointer */
+#define IE_RCNT		(ioaddr + 0x10)	/* Count of bytes in rcv'd packet */
+ 				/* 0x11 is 2nd byte of "Byte Count" */
+#define IE_MMODE	(ioaddr + 0x12)	/* Memory Mode register */
+#define IE_DMA_RST	(ioaddr + 0x13)	/* IE DMA Reset.  write only */
+#define IE_ISTAT	(ioaddr + 0x13)	/* IE Interrupt Status.  read only */
+#define IE_RBUF		(ioaddr + 0x14)	/* IE Receive Buffer port */
+#define IE_XBUF		(ioaddr + 0x15)	/* IE Transmit Buffer port */
+#define IE_SAPROM	(ioaddr + 0x16)	/* window on station addr prom */
+#define IE_RESET	(ioaddr + 0x17)	/* any write causes Board Reset */
+
+/* bits in EDLC_XSTAT, interrupt clear on write, status when read */
+#define XS_TPOK		0x80	/* transmit packet successful */
+#define XS_CS		0x40	/* carrier sense */
+#define XS_RCVD		0x20	/* transmitted packet received */
+#define XS_SHORT	0x10	/* transmission media is shorted */
+#define XS_UFLW		0x08	/* underflow.  iff failed board */
+#define XS_COLL		0x04	/* collision occurred */
+#define XS_16COLL	0x02	/* 16th collision occurred */
+#define XS_PERR		0x01	/* parity error */
+
+#define XS_CLR_UFLW	0x08	/* clear underflow */
+#define XS_CLR_COLL	0x04	/* clear collision */
+#define XS_CLR_16COLL	0x02	/* clear 16th collision */
+#define XS_CLR_PERR	0x01	/* clear parity error */
+
+/* bits in EDLC_XMASK, mask/enable transmit interrupts.  register is r/w */
+#define XM_TPOK		0x80	/* =1 to enable Xmt Pkt OK interrupts */
+#define XM_RCVD		0x20	/* =1 to enable Xmt Pkt Rcvd ints */
+#define XM_UFLW		0x08	/* =1 to enable Xmt Underflow ints */
+#define XM_COLL		0x04	/* =1 to enable Xmt Collision ints */
+#define XM_COLL16	0x02	/* =1 to enable Xmt 16th Coll ints */
+#define XM_PERR		0x01	/* =1 to enable Xmt Parity Error ints */
+ 				/* note: always clear this bit */
+#define XM_ALL		(XM_TPOK | XM_RCVD | XM_UFLW | XM_COLL | XM_COLL16)
+
+/* bits in EDLC_RSTAT, interrupt clear on write, status when read */
+#define RS_PKT_OK	0x80	/* received good packet */
+#define RS_RST_PKT	0x10	/* RESET packet received */
+#define RS_RUNT		0x08	/* Runt Pkt rcvd.  Len < 64 Bytes */
+#define RS_ALIGN	0x04	/* Alignment error. not 8 bit aligned */
+#define RS_CRC_ERR	0x02	/* Bad CRC on rcvd pkt */
+#define RS_OFLW		0x01	/* overflow for rcv FIFO */
+#define RS_VALID_BITS	( RS_PKT_OK | RS_RST_PKT | RS_RUNT | RS_ALIGN | RS_CRC_ERR | RS_OFLW )
+ 				/* all valid RSTAT bits */
+
+#define RS_CLR_PKT_OK	0x80	/* clear rcvd packet interrupt */
+#define RS_CLR_RST_PKT	0x10	/* clear RESET packet received */
+#define RS_CLR_RUNT	0x08	/* clear Runt Pckt received */
+#define RS_CLR_ALIGN	0x04	/* clear Alignment error */
+#define RS_CLR_CRC_ERR	0x02	/* clear CRC error */
+#define RS_CLR_OFLW	0x01	/* clear rcv FIFO Overflow */
+
+/* bits in EDLC_RMASK, mask/enable receive interrupts.  register is r/w */
+#define RM_PKT_OK	0x80	/* =1 to enable rcvd good packet ints */
+#define RM_RST_PKT	0x10	/* =1 to enable RESET packet ints */
+#define RM_RUNT		0x08	/* =1 to enable Runt Pkt rcvd ints */
+#define RM_ALIGN	0x04	/* =1 to enable Alignment error ints */
+#define RM_CRC_ERR	0x02	/* =1 to enable Bad CRC error ints */
+#define RM_OFLW		0x01	/* =1 to enable overflow error ints */
+
+/* bits in EDLC_RMODE, set Receive Packet mode.  register is r/w */
+#define RMD_TEST	0x80	/* =1 for Chip testing.  normally 0 */
+#define RMD_ADD_SIZ	0x10	/* =1 5-byte addr match.  normally 0 */
+#define RMD_EN_RUNT	0x08	/* =1 enable runt rcv.  normally 0 */
+#define RMD_EN_RST	0x04	/* =1 to rcv RESET pkt.  normally 0 */
+
+#define RMD_PROMISC	0x03	/* receive *all* packets.  unusual */
+#define RMD_MULTICAST	0x02	/* receive multicasts too.  unusual */
+#define RMD_BROADCAST	0x01	/* receive broadcasts & normal. usual */
+#define RMD_NO_PACKETS	0x00	/* don't receive any packets. unusual */
+
+/* bits in EDLC_XMODE, set Transmit Packet mode.  register is r/w */
+#define XMD_COLL_CNT	0xf0	/* coll's since success.  read-only */
+#define XMD_IG_PAR	0x08	/* =1 to ignore parity.  ALWAYS set */
+#define XMD_T_MODE	0x04	/* =1 to power xcvr. ALWAYS set this */
+#define XMD_LBC		0x02	/* =1 for loopbakc.  normally set */
+#define XMD_DIS_C	0x01	/* =1 disables contention. normally 0 */
+
+/* bits in EDLC_RESET, write only */
+#define RS_RESET	0x80	/* =1 to hold EDLC in reset state */
+
+/* bits in IE_MMODE, write only */
+#define MM_EN_DMA	0x80	/* =1 begin DMA xfer, Cplt clrs it */
+#define MM_EN_RCV	0x40	/* =1 allows Pkt rcv.  clr'd by rcv */
+#define MM_EN_XMT	0x20	/* =1 begin Xmt pkt.  Cplt clrs it */
+#define MM_BUS_PAGE	0x18	/* =00 ALWAYS.  Used when MUX=1 */
+#define MM_NET_PAGE	0x06	/* =00 ALWAYS.  Used when MUX=0 */
+#define MM_MUX		0x01	/* =1 means Rcv Buff on system bus */
+				/* =0 means Xmt Buff on system bus */
+
+/* bits in IE_ISTAT, read only */
+#define IS_TDIAG	0x80	/* =1 if Diagnostic problem */
+#define IS_EN_RCV	0x20	/* =1 until frame is rcv'd cplt */
+#define IS_EN_XMT	0x10	/* =1 until frame is xmt'd cplt */
+#define IS_EN_DMA	0x08	/* =1 until DMA is cplt or aborted */
+#define IS_DMA_INT	0x04	/* =0 iff DMA done interrupt. */
+#define IS_R_INT	0x02	/* =0 iff unmasked Rcv interrupt */
+#define IS_X_INT	0x01	/* =0 iff unmasked Xmt interrupt */
+