patch-2.2.18 linux/drivers/net/mac89x0.c

• Lines: 680
• Date: Fri Oct 13 23:40:43 2000
• Orig file: v2.2.17/drivers/net/mac89x0.c
• Orig date: Thu Jan 1 01:00:00 1970

diff -u --new-file --recursive --exclude-from /usr/src/exclude v2.2.17/drivers/net/mac89x0.c linux/drivers/net/mac89x0.c
@@ -0,0 +1,679 @@
+/* cs89x0.c: A Crystal Semiconductor CS89[02]0 driver for linux. */
+/*
+	Written 1996 by Russell Nelson, with reference to skeleton.c
+	written 1993-1994 by Donald Becker.
+
+	This software may be used and distributed according to the terms
+	of the GNU Public License, incorporated herein by reference.
+
+	The author may be reached at nelson@crynwr.com, Crynwr
+	Software, 11 Grant St., Potsdam, NY 13676
+
+  Changelog:
+
+  Mike Cruse        : mcruse@cti-ltd.com
+                    : Changes for Linux 2.0 compatibility. 
+                    : Added dev_id parameter in net_interrupt(),
+                    : request_irq() and free_irq(). Just NULL for now.
+
+  Mike Cruse        : Added MOD_INC_USE_COUNT and MOD_DEC_USE_COUNT macros
+                    : in net_open() and net_close() so kerneld would know
+                    : that the module is in use and wouldn't eject the 
+                    : driver prematurely.
+
+  Mike Cruse        : Rewrote init_module() and cleanup_module using 8390.c
+                    : as an example. Disabled autoprobing in init_module(),
+                    : not a good thing to do to other devices while Linux
+                    : is running from all accounts.
+                    
+  Alan Cox          : Removed 1.2 support, added 2.1 extra counters.
+
+  David Huggins-Daines <dhd@debian.org>
+  
+  Split this off into mac89x0.c, and gutted it of all parts which are
+  not relevant to the existing CS8900 cards on the Macintosh
+  (i.e. basically the Daynaport CS and LC cards).  To be precise:
+
+    * Removed all the media-detection stuff, because these cards are
+    TP-only.
+
+    * Lobotomized the ISA interrupt bogosity, because these cards use
+    a hardwired NuBus interrupt and a magic ISAIRQ value in the card.
+
+    * Basically eliminated everything not relevant to getting the
+    cards minimally functioning on the Macintosh.
+
+  I might add that these cards are badly designed even from the Mac
+  standpoint, in that Dayna, in their infinite wisdom, used NuBus slot
+  I/O space and NuBus interrupts for these cards, but neglected to
+  provide anything even remotely resembling a NuBus ROM.  Therefore we
+  have to probe for them in a brain-damaged ISA-like fashion.
+*/
+
+static char *version =
+"cs89x0.c:v1.02 11/26/96 Russell Nelson <nelson@crynwr.com>\n";
+
+/* ======================= configure the driver here ======================= */
+
+/* use 0 for production, 1 for verification, >2 for debug */
+#ifndef NET_DEBUG
+#define NET_DEBUG 0
+#endif
+
+/* ======================= end of configuration ======================= */
+
+
+/* Always include 'config.h' first in case the user wants to turn on
+   or override something. */
+#ifdef MODULE
+#include <linux/module.h>
+#include <linux/version.h>
+#else
+#define MOD_INC_USE_COUNT
+#define MOD_DEC_USE_COUNT
+#endif
+
+#define PRINTK(x) printk x
+
+/*
+  Sources:
+
+	Crynwr packet driver epktisa.
+
+	Crystal Semiconductor data sheets.
+
+*/
+
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/interrupt.h>
+#include <linux/ptrace.h>
+#include <linux/ioport.h>
+#include <linux/in.h>
+#include <linux/malloc.h>
+#include <linux/string.h>
+#include <linux/nubus.h>
+#include <asm/system.h>
+#include <asm/bitops.h>
+#include <asm/io.h>
+#include <asm/hwtest.h>
+#include <asm/macints.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include "cs89x0.h"
+
+static unsigned int net_debug = NET_DEBUG;
+
+/* Information that need to be kept for each board. */
+struct net_local {
+	struct net_device_stats stats;
+	int chip_type;		/* one of: CS8900, CS8920, CS8920M */
+	char chip_revision;	/* revision letter of the chip ('A'...) */
+	int send_cmd;		/* the propercommand used to send a packet. */
+	int rx_mode;
+	int curr_rx_cfg;
+        int send_underrun;      /* keep track of how many underruns in a row we get */
+	struct sk_buff *skb;
+};
+
+/* Index to functions, as function prototypes. */
+
+extern int mac89x0_probe(struct device *dev);
+extern void reset_chip(struct device *dev);
+static int net_open(struct device *dev);
+static int	net_send_packet(struct sk_buff *skb, struct device *dev);
+static void net_interrupt(int irq, void *dev_id, struct pt_regs *regs);
+static void set_multicast_list(struct device *dev);
+static void net_rx(struct device *dev);
+static int net_close(struct device *dev);
+static struct net_device_stats *net_get_stats(struct device *dev);
+static int set_mac_address(struct device *dev, void *addr);
+
+
+/* Example routines you must write ;->. */
+#define tx_done(dev) 1
+
+/* For reading/writing registers ISA-style */
+static int inline
+readreg_io(struct device *dev, int portno)
+{
+	writew(swab16(portno), dev->base_addr + ADD_PORT);
+	return swab16(readw(dev->base_addr + DATA_PORT));
+}
+
+static void inline
+writereg_io(struct device *dev, int portno, int value)
+{
+	writew(swab16(portno), dev->base_addr + ADD_PORT);
+	writew(swab16(value), dev->base_addr + DATA_PORT);
+}
+
+/* These are for reading/writing registers in shared memory */
+static int inline
+readreg(struct device *dev, int portno)
+{
+	return swab16(readw(dev->mem_start + portno));
+}
+
+static void inline
+writereg(struct device *dev, int portno, int value)
+{
+	writew(swab16(value), dev->mem_start + portno);
+}
+
+/* Probe for the CS8900 card in slot E.  We won't bother looking
+   anywhere else until we have a really good reason to do so. */
+__initfunc(int mac89x0_probe(struct device *dev))
+{
+	static int once_is_enough = 0;
+	struct net_local *lp;
+	static unsigned version_printed = 0;
+	int i, slot;
+	unsigned rev_type = 0;
+	unsigned long ioaddr;
+	unsigned short sig;
+
+	if (once_is_enough)
+		return ENODEV;
+	once_is_enough = 1;
+
+	/* We might have to parameterize this later */
+	slot = 0xE;
+	/* Get out now if there's a real NuBus card in slot E */
+	if (nubus_find_slot(slot, NULL) != NULL)
+		return ENODEV;	
+
+	/* The pseudo-ISA bits always live at offset 0x300 (gee,
+           wonder why...) */
+	ioaddr = (unsigned long)
+		nubus_slot_addr(slot) | (((slot&0xf) << 20) + DEFAULTIOBASE);
+	{
+		unsigned long flags;
+		int card_present;
+		
+		save_flags(flags);
+		cli();
+		card_present = hwreg_present((void*) ioaddr+4)
+		  && hwreg_present((void*) ioaddr + DATA_PORT);
+		restore_flags(flags);
+
+		if (!card_present)
+			return ENODEV;
+	}
+
+	writew(0, ioaddr + ADD_PORT);
+	sig = readw(ioaddr + DATA_PORT);
+	if (sig != swab16(CHIP_EISA_ID_SIG))
+		return ENODEV;
+
+	/* Initialize the device structure. */
+	if (dev->priv == NULL) {
+		dev->priv = kmalloc(sizeof(struct net_local), GFP_KERNEL);
+                memset(dev->priv, 0, sizeof(struct net_local));
+        }
+	lp = (struct net_local *)dev->priv;
+
+	/* Fill in the 'dev' fields. */
+	dev->base_addr = ioaddr;
+	dev->mem_start = (unsigned long) 
+		nubus_slot_addr(slot) | (((slot&0xf) << 20) + MMIOBASE);
+	dev->mem_end = dev->mem_start + 0x1000;
+
+	/* Turn on shared memory */
+	writereg_io(dev, PP_BusCTL, MEMORY_ON);
+
+	/* get the chip type */
+	rev_type = readreg(dev, PRODUCT_ID_ADD);
+	lp->chip_type = rev_type &~ REVISON_BITS;
+	lp->chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A';
+
+	/* Check the chip type and revision in order to set the correct send command
+	CS8920 revision C and CS8900 revision F can use the faster send. */
+	lp->send_cmd = TX_AFTER_381;
+	if (lp->chip_type == CS8900 && lp->chip_revision >= 'F')
+		lp->send_cmd = TX_NOW;
+	if (lp->chip_type != CS8900 && lp->chip_revision >= 'C')
+		lp->send_cmd = TX_NOW;
+
+	if (net_debug && version_printed++ == 0)
+		printk(version);
+
+	printk(KERN_INFO "%s: cs89%c0%s rev %c found at %#8lx",
+	       dev->name,
+	       lp->chip_type==CS8900?'0':'2',
+	       lp->chip_type==CS8920M?"M":"",
+	       lp->chip_revision,
+	       dev->base_addr);
+
+	/* Try to read the MAC address */
+	if ((readreg(dev, PP_SelfST) & (EEPROM_PRESENT | EEPROM_OK)) == 0) {
+		printk("\nmac89x0: No EEPROM, giving up now.\n");
+		return ENODEV;
+        } else {
+                for (i = 0; i < ETH_ALEN; i += 2) {
+			/* Big-endian (why??!) */
+			unsigned short s = readreg(dev, PP_IA + i);
+                        dev->dev_addr[i] = s >> 8;
+                        dev->dev_addr[i+1] = s & 0xff;
+                }
+        }
+
+	dev->irq = SLOT2IRQ(slot);
+	printk(" IRQ %d ADDR ", dev->irq);
+
+	/* print the ethernet address. */
+	for (i = 0; i < ETH_ALEN; i++)
+		printk("%2.2x%s", dev->dev_addr[i],
+		       ((i < ETH_ALEN-1) ? ":" : ""));
+
+	dev->open		= net_open;
+	dev->stop		= net_close;
+	dev->hard_start_xmit = net_send_packet;
+	dev->get_stats	= net_get_stats;
+	dev->set_multicast_list = &set_multicast_list;
+	dev->set_mac_address = &set_mac_address;
+
+	/* Fill in the fields of the device structure with ethernet values. */
+	ether_setup(dev);
+
+	printk("\n");
+	return 0;
+}
+
+/* This is useful for something, but I don't know what yet. */
+__initfunc(void
+reset_chip(struct device *dev))
+{
+	int reset_start_time;
+
+	writereg(dev, PP_SelfCTL, readreg(dev, PP_SelfCTL) | POWER_ON_RESET);
+
+	/* wait 30 ms */
+	current->state = TASK_INTERRUPTIBLE;
+	schedule_timeout(30*HZ/1000);
+
+	/* Wait until the chip is reset */
+	reset_start_time = jiffies;
+	while( (readreg(dev, PP_SelfST) & INIT_DONE) == 0 && jiffies - reset_start_time < 2)
+		;
+}
+
+/* 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 non-reboot way to recover if something goes wrong.
+   */
+static int
+net_open(struct device *dev)
+{
+	struct net_local *lp = (struct net_local *)dev->priv;
+	int i;
+
+	/* Disable the interrupt for now */
+	writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL) & ~ENABLE_IRQ);
+
+	/* Grab the interrupt */
+	if (request_irq(dev->irq, &net_interrupt, 0, "cs89x0", dev))
+		return -EAGAIN;
+
+	/* Set up the IRQ - Apparently magic */
+	if (lp->chip_type == CS8900)
+		writereg(dev, PP_CS8900_ISAINT, 0);
+	else
+		writereg(dev, PP_CS8920_ISAINT, 0);
+
+	/* set the Ethernet address */
+	for (i=0; i < ETH_ALEN/2; i++)
+		writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
+
+	/* Turn on both receive and transmit operations */
+	writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON);
+
+	/* Receive only error free packets addressed to this card */
+	lp->rx_mode = 0;
+	writereg(dev, PP_RxCTL, DEF_RX_ACCEPT);
+
+	lp->curr_rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL;
+
+	writereg(dev, PP_RxCFG, lp->curr_rx_cfg);
+
+	writereg(dev, PP_TxCFG, TX_LOST_CRS_ENBL | TX_SQE_ERROR_ENBL | TX_OK_ENBL |
+	       TX_LATE_COL_ENBL | TX_JBR_ENBL | TX_ANY_COL_ENBL | TX_16_COL_ENBL);
+
+	writereg(dev, PP_BufCFG, READY_FOR_TX_ENBL | RX_MISS_COUNT_OVRFLOW_ENBL |
+		 TX_COL_COUNT_OVRFLOW_ENBL | TX_UNDERRUN_ENBL);
+
+	/* now that we've got our act together, enable everything */
+	writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL) | ENABLE_IRQ);
+	dev->tbusy = 0;
+	dev->interrupt = 0;
+	dev->start = 1;
+        MOD_INC_USE_COUNT;
+	return 0;
+}
+
+static int
+net_send_packet(struct sk_buff *skb, struct device *dev)
+{
+	if (dev->tbusy) {
+		/* If we get here, some higher level has decided we are broken.
+		   There should really be a "kick me" function call instead. */
+		int tickssofar = jiffies - dev->trans_start;
+		if (tickssofar < 5)
+			return 1;
+		if (net_debug > 0) printk("%s: transmit timed out, %s?\n", dev->name,
+			   tx_done(dev) ? "IRQ conflict" : "network cable problem");
+		/* Try to restart the adaptor. */
+		dev->tbusy=0;
+		dev->trans_start = jiffies;
+	}
+
+	/* Block a timer-based transmit from overlapping.  This could better be
+	   done with atomic_swap(1, dev->tbusy), but set_bit() works as well. */
+	if (test_and_set_bit(0, (void*)&dev->tbusy) != 0)
+		printk("%s: Transmitter access conflict.\n", dev->name);
+	else {
+		struct net_local *lp = (struct net_local *)dev->priv;
+		unsigned long flags;
+
+		if (net_debug > 3)
+			printk("%s: sent %d byte packet of type %x\n",
+			       dev->name, skb->len,
+			       (skb->data[ETH_ALEN+ETH_ALEN] << 8)
+			       | skb->data[ETH_ALEN+ETH_ALEN+1]);
+
+		/* keep the upload from being interrupted, since we
+                   ask the chip to start transmitting before the
+                   whole packet has been completely uploaded. */
+		save_flags(flags);
+		cli();
+
+		/* initiate a transmit sequence */
+		writereg(dev, PP_TxCMD, lp->send_cmd);
+		writereg(dev, PP_TxLength, skb->len);
+
+		/* Test to see if the chip has allocated memory for the packet */
+		if ((readreg(dev, PP_BusST) & READY_FOR_TX_NOW) == 0) {
+			/* Gasp!  It hasn't.  But that shouldn't happen since
+			   we're waiting for TxOk, so return 1 and requeue this packet. */
+			restore_flags(flags);
+			return 1;
+		}
+
+		/* Write the contents of the packet */
+		memcpy_toio(dev->mem_start + PP_TxFrame, skb->data, skb->len+1);
+
+		restore_flags(flags);
+		dev->trans_start = jiffies;
+	}
+	dev_kfree_skb (skb);
+
+	return 0;
+}
+
+/* The typical workload of the driver:
+   Handle the network interface interrupts. */
+static void net_interrupt(int irq, void *dev_id, struct pt_regs * regs)
+{
+	struct device *dev = dev_id;
+	struct net_local *lp;
+	int ioaddr, status;
+
+	if (dev == NULL) {
+		printk ("net_interrupt(): irq %d for unknown device.\n", irq);
+		return;
+	}
+	if (dev->interrupt)
+		printk("%s: Re-entering the interrupt handler.\n", dev->name);
+	dev->interrupt = 1;
+
+	ioaddr = dev->base_addr;
+	lp = (struct net_local *)dev->priv;
+
+	/* we MUST read all the events out of the ISQ, otherwise we'll never
+           get interrupted again.  As a consequence, we can't have any limit
+           on the number of times we loop in the interrupt handler.  The
+           hardware guarantees that eventually we'll run out of events.  Of
+           course, if you're on a slow machine, and packets are arriving
+           faster than you can read them off, you're screwed.  Hasta la
+           vista, baby!  */
+	while ((status = swab16(readw(dev->base_addr + ISQ_PORT)))) {
+		if (net_debug > 4)printk("%s: event=%04x\n", dev->name, status);
+		switch(status & ISQ_EVENT_MASK) {
+		case ISQ_RECEIVER_EVENT:
+			/* Got a packet(s). */
+			net_rx(dev);
+			break;
+		case ISQ_TRANSMITTER_EVENT:
+			lp->stats.tx_packets++;
+			dev->tbusy = 0;
+			mark_bh(NET_BH);	/* Inform upper layers. */
+			if ((status & TX_OK) == 0) lp->stats.tx_errors++;
+			if (status & TX_LOST_CRS) lp->stats.tx_carrier_errors++;
+			if (status & TX_SQE_ERROR) lp->stats.tx_heartbeat_errors++;
+			if (status & TX_LATE_COL) lp->stats.tx_window_errors++;
+			if (status & TX_16_COL) lp->stats.tx_aborted_errors++;
+			break;
+		case ISQ_BUFFER_EVENT:
+			if (status & READY_FOR_TX) {
+				/* we tried to transmit a packet earlier,
+                                   but inexplicably ran out of buffers.
+                                   That shouldn't happen since we only ever
+                                   load one packet.  Shrug.  Do the right
+                                   thing anyway. */
+				dev->tbusy = 0;
+				mark_bh(NET_BH);	/* Inform upper layers. */
+			}
+			if (status & TX_UNDERRUN) {
+				if (net_debug > 0) printk("%s: transmit underrun\n", dev->name);
+                                lp->send_underrun++;
+                                if (lp->send_underrun == 3) lp->send_cmd = TX_AFTER_381;
+                                else if (lp->send_underrun == 6) lp->send_cmd = TX_AFTER_ALL;
+                        }
+			break;
+		case ISQ_RX_MISS_EVENT:
+			lp->stats.rx_missed_errors += (status >>6);
+			break;
+		case ISQ_TX_COL_EVENT:
+			lp->stats.collisions += (status >>6);
+			break;
+		}
+	}
+	dev->interrupt = 0;
+	return;
+}
+
+/* We have a good packet(s), get it/them out of the buffers. */
+static void
+net_rx(struct device *dev)
+{
+	struct net_local *lp = (struct net_local *)dev->priv;
+	struct sk_buff *skb;
+	int status, length;
+
+	status = readreg(dev, PP_RxStatus);
+	if ((status & RX_OK) == 0) {
+		lp->stats.rx_errors++;
+		if (status & RX_RUNT) lp->stats.rx_length_errors++;
+		if (status & RX_EXTRA_DATA) lp->stats.rx_length_errors++;
+		if (status & RX_CRC_ERROR) if (!(status & (RX_EXTRA_DATA|RX_RUNT)))
+			/* per str 172 */
+			lp->stats.rx_crc_errors++;
+		if (status & RX_DRIBBLE) lp->stats.rx_frame_errors++;
+		return;
+	}
+
+	length = readreg(dev, PP_RxLength);
+	/* Malloc up new buffer. */
+	skb = alloc_skb(length, GFP_ATOMIC);
+	if (skb == NULL) {
+		printk("%s: Memory squeeze, dropping packet.\n", dev->name);
+		lp->stats.rx_dropped++;
+		return;
+	}
+	skb->len = length;
+	skb->dev = dev;
+
+	memcpy_fromio(skb->data, dev->mem_start + PP_RxFrame, length);
+
+	if (net_debug > 3)printk("%s: received %d byte packet of type %x\n",
+                                 dev->name, length,
+                                 (skb->data[ETH_ALEN+ETH_ALEN] << 8)
+				 | skb->data[ETH_ALEN+ETH_ALEN+1]);
+
+        skb->protocol=eth_type_trans(skb,dev);
+	netif_rx(skb);
+	lp->stats.rx_packets++;
+	lp->stats.rx_bytes+=skb->len;
+	return;
+}
+
+/* The inverse routine to net_open(). */
+static int
+net_close(struct device *dev)
+{
+
+	writereg(dev, PP_RxCFG, 0);
+	writereg(dev, PP_TxCFG, 0);
+	writereg(dev, PP_BufCFG, 0);
+	writereg(dev, PP_BusCTL, 0);
+
+	dev->start = 0;
+
+	free_irq(dev->irq, dev);
+
+	/* Update the statistics here. */
+
+        MOD_DEC_USE_COUNT;
+	return 0;
+
+}
+
+/* Get the current statistics.	This may be called with the card open or
+   closed. */
+static struct net_device_stats *
+net_get_stats(struct device *dev)
+{
+	struct net_local *lp = (struct net_local *)dev->priv;
+
+	cli();
+	/* Update the statistics from the device registers. */
+	lp->stats.rx_missed_errors += (readreg(dev, PP_RxMiss) >> 6);
+	lp->stats.collisions += (readreg(dev, PP_TxCol) >> 6);
+	sti();
+
+	return &lp->stats;
+}
+
+static void set_multicast_list(struct device *dev)
+{
+	struct net_local *lp = (struct net_local *)dev->priv;
+
+	if(dev->flags&IFF_PROMISC)
+	{
+		lp->rx_mode = RX_ALL_ACCEPT;
+	}
+	else if((dev->flags&IFF_ALLMULTI)||dev->mc_list)
+	{
+		/* The multicast-accept list is initialized to accept-all, and we
+		   rely on higher-level filtering for now. */
+		lp->rx_mode = RX_MULTCAST_ACCEPT;
+	} 
+	else
+		lp->rx_mode = 0;
+
+	writereg(dev, PP_RxCTL, DEF_RX_ACCEPT | lp->rx_mode);
+
+	/* in promiscuous mode, we accept errored packets, so we have to enable interrupts on them also */
+	writereg(dev, PP_RxCFG, lp->curr_rx_cfg |
+	     (lp->rx_mode == RX_ALL_ACCEPT? (RX_CRC_ERROR_ENBL|RX_RUNT_ENBL|RX_EXTRA_DATA_ENBL) : 0));
+}
+
+
+static int set_mac_address(struct device *dev, void *addr)
+{
+	int i;
+	if (dev->start)
+		return -EBUSY;
+	printk("%s: Setting MAC address to ", dev->name);
+	for (i = 0; i < 6; i++)
+		printk(" %2.2x", dev->dev_addr[i] = ((unsigned char *)addr)[i]);
+	printk(".\n");
+	/* set the Ethernet address */
+	for (i=0; i < ETH_ALEN/2; i++)
+		writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
+
+	return 0;
+}
+
+#ifdef MODULE
+
+static char namespace[16] = "";
+static struct device dev_cs89x0 = {
+        NULL,
+        0, 0, 0, 0,
+        0, 0,
+        0, 0, 0, NULL, NULL };
+
+static int debug=0;
+
+MODULE_PARM(debug, "i");
+
+EXPORT_NO_SYMBOLS;
+
+int
+init_module(void)
+{
+	struct net_local *lp;
+
+	net_debug = debug;
+        dev_cs89x0.name = namespace;
+        dev_cs89x0.init = mac89x0_probe;
+        dev_cs89x0.priv = kmalloc(sizeof(struct net_local), GFP_KERNEL);
+	memset(dev_cs89x0.priv, 0, sizeof(struct net_local));
+	lp = (struct net_local *)dev_cs89x0.priv;
+
+        if (register_netdev(&dev_cs89x0) != 0) {
+                printk(KERN_WARNING "mac89x0.c: No card found\n");
+                return -ENXIO;
+        }
+	return 0;
+}
+
+void
+cleanup_module(void)
+{
+
+#endif
+#ifdef MODULE
+	writew(0, dev_cs89x0.base_addr + ADD_PORT);
+#endif
+#ifdef MODULE
+
+        if (dev_cs89x0.priv != NULL) {
+                /* Free up the private structure, or leak memory :-)  */
+                unregister_netdev(&dev_cs89x0);
+                kfree(dev_cs89x0.priv);
+                dev_cs89x0.priv = NULL;	/* gets re-allocated by cs89x0_probe1 */
+        }
+}
+#endif /* MODULE */
+
+/*
+ * Local variables:
+ *  compile-command: "m68k-linux-gcc -D__KERNEL__ -I../../include -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer -pipe -fno-strength-reduce -ffixed-a2 -DMODULE -DMODVERSIONS -include ../../include/linux/modversions.h   -c -o mac89x0.o mac89x0.c"
+ *  version-control: t
+ *  kept-new-versions: 5
+ *  c-indent-level: 8
+ *  tab-width: 8
+ * End:
+ *
+ */