Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 1896 insertions, 0 deletions

diff --git a/drivers/net/wireless/arlan-main.c b/drivers/net/wireless/arlan-main.c
new file mode 100644
index 000000000000..4f304c6e693a
--- /dev/null
+++ b/drivers/net/wireless/arlan-main.c
@@ -0,0 +1,1896 @@
+/*
+ *  Copyright (C) 1997 Cullen Jennings
+ *  Copyright (C) 1998 Elmer Joandiu, elmer@ylenurme.ee
+ *  GNU General Public License applies
+ * This module provides support for the Arlan 655 card made by Aironet
+ */
+
+#include <linux/config.h>
+#include "arlan.h"
+
+#if BITS_PER_LONG != 32
+#  error FIXME: this driver requires a 32-bit platform
+#endif
+
+static const char *arlan_version = "C.Jennigs 97 & Elmer.Joandi@ut.ee  Oct'98, http://www.ylenurme.ee/~elmer/655/";
+
+struct net_device *arlan_device[MAX_ARLANS];
+
+static int SID = SIDUNKNOWN;
+static int radioNodeId = radioNodeIdUNKNOWN;
+static char encryptionKey[12] = {'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h'};
+int arlan_debug = debugUNKNOWN;
+static int spreadingCode = spreadingCodeUNKNOWN;
+static int channelNumber = channelNumberUNKNOWN;
+static int channelSet = channelSetUNKNOWN;
+static int systemId = systemIdUNKNOWN;
+static int registrationMode = registrationModeUNKNOWN;
+static int keyStart;
+static int tx_delay_ms;
+static int retries = 5;
+static int tx_queue_len = 1;
+static int arlan_EEPROM_bad;
+
+#ifdef ARLAN_DEBUGGING
+
+static int arlan_entry_debug;
+static int arlan_exit_debug;
+static int testMemory = testMemoryUNKNOWN;
+static int irq = irqUNKNOWN;
+static int txScrambled = 1;
+static int mdebug;
+
+module_param(irq, int, 0);
+module_param(mdebug, int, 0);
+module_param(testMemory, int, 0);
+module_param(arlan_entry_debug, int, 0);
+module_param(arlan_exit_debug, int, 0);
+module_param(txScrambled, int, 0);
+MODULE_PARM_DESC(irq, "(unused)");
+MODULE_PARM_DESC(testMemory, "(unused)");
+MODULE_PARM_DESC(mdebug, "Arlan multicast debugging (0-1)");
+#endif
+
+module_param(arlan_debug, int, 0);
+module_param(spreadingCode, int, 0);
+module_param(channelNumber, int, 0);
+module_param(channelSet, int, 0);
+module_param(systemId, int, 0);
+module_param(registrationMode, int, 0);
+module_param(radioNodeId, int, 0);
+module_param(SID, int, 0);
+module_param(keyStart, int, 0);
+module_param(tx_delay_ms, int, 0);
+module_param(retries, int, 0);
+module_param(tx_queue_len, int, 0);
+module_param(arlan_EEPROM_bad, int, 0);
+MODULE_PARM_DESC(arlan_debug, "Arlan debug enable (0-1)");
+MODULE_PARM_DESC(retries, "Arlan maximum packet retransmisions");
+#ifdef ARLAN_ENTRY_EXIT_DEBUGGING
+MODULE_PARM_DESC(arlan_entry_debug, "Arlan driver function entry debugging");
+MODULE_PARM_DESC(arlan_exit_debug, "Arlan driver function exit debugging");
+MODULE_PARM_DESC(arlan_entry_and_exit_debug, "Arlan driver function entry and exit debugging");
+#else
+MODULE_PARM_DESC(arlan_entry_debug, "(ignored)");
+MODULE_PARM_DESC(arlan_exit_debug, "(ignored)");
+MODULE_PARM_DESC(arlan_entry_and_exit_debug, "(ignored)");
+#endif
+
+struct arlan_conf_stru arlan_conf[MAX_ARLANS];
+static int arlans_found;
+
+static  int 	arlan_open(struct net_device *dev);
+static  int 	arlan_tx(struct sk_buff *skb, struct net_device *dev);
+static  irqreturn_t arlan_interrupt(int irq, void *dev_id, struct pt_regs *regs);
+static  int 	arlan_close(struct net_device *dev);
+static  struct net_device_stats *
+		arlan_statistics		(struct net_device *dev);
+static  void 	arlan_set_multicast		(struct net_device *dev);
+static  int 	arlan_hw_tx			(struct net_device* dev, char *buf, int length );
+static  int	arlan_hw_config			(struct net_device * dev);
+static  void 	arlan_tx_done_interrupt		(struct net_device * dev, int status);
+static  void	arlan_rx_interrupt		(struct net_device * dev, u_char rxStatus, u_short, u_short);
+static  void	arlan_process_interrupt		(struct net_device * dev);
+static	void	arlan_tx_timeout		(struct net_device *dev);
+
+static inline long us2ticks(int us)
+{
+	return us * (1000000 / HZ);
+}
+
+
+#ifdef ARLAN_ENTRY_EXIT_DEBUGGING
+#define ARLAN_DEBUG_ENTRY(name) \
+	{\
+	struct timeval timev;\
+	do_gettimeofday(&timev);\
+		if (arlan_entry_debug || arlan_entry_and_exit_debug)\
+			printk("--->>>" name " %ld " "\n",((long int) timev.tv_sec * 1000000 + timev.tv_usec));\
+	}
+#define ARLAN_DEBUG_EXIT(name) \
+	{\
+	struct timeval timev;\
+	do_gettimeofday(&timev);\
+		if (arlan_exit_debug || arlan_entry_and_exit_debug)\
+			printk("<<<---" name " %ld " "\n",((long int) timev.tv_sec * 1000000 + timev.tv_usec) );\
+	}
+#else
+#define ARLAN_DEBUG_ENTRY(name)
+#define ARLAN_DEBUG_EXIT(name)
+#endif
+
+
+#define arlan_interrupt_ack(dev)\
+        clearClearInterrupt(dev);\
+        setClearInterrupt(dev);
+
+static inline int arlan_drop_tx(struct net_device *dev)
+{
+	struct arlan_private *priv = netdev_priv(dev);
+
+	priv->stats.tx_errors++;
+	if (priv->Conf->tx_delay_ms)
+	{
+		priv->tx_done_delayed = jiffies + priv->Conf->tx_delay_ms * HZ / 1000 + 1;
+	}
+	else
+	{
+		priv->waiting_command_mask &= ~ARLAN_COMMAND_TX;
+		TXHEAD(dev).offset = 0;
+		TXTAIL(dev).offset = 0;
+		priv->txLast = 0;
+		priv->bad = 0;
+		if (!priv->under_reset && !priv->under_config)
+			netif_wake_queue (dev);
+	}
+	return 1;
+}
+
+
+int arlan_command(struct net_device *dev, int command_p)
+{
+	struct arlan_private *priv = netdev_priv(dev);
+	volatile struct arlan_shmem __iomem *arlan = priv->card;
+	struct arlan_conf_stru *conf = priv->Conf;
+	int udelayed = 0;
+	int i = 0;
+	unsigned long flags;
+
+	ARLAN_DEBUG_ENTRY("arlan_command");
+
+	if (priv->card_polling_interval)
+		priv->card_polling_interval = 1;
+
+	if (arlan_debug & ARLAN_DEBUG_CHAIN_LOCKS)
+		printk(KERN_DEBUG "arlan_command, %lx commandByte %x waiting %lx incoming %x \n",
+		jiffies, READSHMB(arlan->commandByte),
+		       priv->waiting_command_mask, command_p);
+
+	priv->waiting_command_mask |= command_p;
+
+	if (priv->waiting_command_mask & ARLAN_COMMAND_RESET)
+		if (time_after(jiffies, priv->lastReset + 5 * HZ))
+			priv->waiting_command_mask &= ~ARLAN_COMMAND_RESET;
+
+	if (priv->waiting_command_mask & ARLAN_COMMAND_INT_ACK)
+	{
+		arlan_interrupt_ack(dev);
+		priv->waiting_command_mask &= ~ARLAN_COMMAND_INT_ACK;
+	}
+	if (priv->waiting_command_mask & ARLAN_COMMAND_INT_ENABLE)
+	{
+		setInterruptEnable(dev);
+		priv->waiting_command_mask &= ~ARLAN_COMMAND_INT_ENABLE;
+	}
+
+	/* Card access serializing lock */
+	spin_lock_irqsave(&priv->lock, flags);
+
+	/* Check cards status and waiting */
+
+	if (priv->waiting_command_mask & (ARLAN_COMMAND_LONG_WAIT_NOW | ARLAN_COMMAND_WAIT_NOW))
+	{
+		while (priv->waiting_command_mask & (ARLAN_COMMAND_LONG_WAIT_NOW | ARLAN_COMMAND_WAIT_NOW))
+		{
+			if (READSHMB(arlan->resetFlag) ||
+				READSHMB(arlan->commandByte))	/* || 
+								   (readControlRegister(dev) & ARLAN_ACCESS))
+								 */
+				udelay(40);
+			else
+				priv->waiting_command_mask &= ~(ARLAN_COMMAND_LONG_WAIT_NOW | ARLAN_COMMAND_WAIT_NOW);
+
+			udelayed++;
+
+			if (priv->waiting_command_mask & ARLAN_COMMAND_LONG_WAIT_NOW)
+			{
+				if (udelayed * 40 > 1000000)
+				{
+					printk(KERN_ERR "%s long wait too long \n", dev->name);
+					priv->waiting_command_mask |= ARLAN_COMMAND_RESET;
+					break;
+				}
+			}
+			else if (priv->waiting_command_mask & ARLAN_COMMAND_WAIT_NOW)
+			{
+				if (udelayed * 40 > 1000)
+				{
+					printk(KERN_ERR "%s short wait too long \n", dev->name);
+					goto bad_end;
+				}
+			}
+		}
+	}
+	else
+	{
+		i = 0;
+		while ((READSHMB(arlan->resetFlag) ||
+			READSHMB(arlan->commandByte)) &&
+			conf->pre_Command_Wait > (i++) * 10)
+			udelay(10);
+
+
+		if ((READSHMB(arlan->resetFlag) ||
+			READSHMB(arlan->commandByte)) &&
+			!(priv->waiting_command_mask & ARLAN_COMMAND_RESET))
+		{
+			goto card_busy_end;
+		}
+	}
+	if (priv->waiting_command_mask & ARLAN_COMMAND_RESET)
+		priv->under_reset = 1;
+	if (priv->waiting_command_mask & ARLAN_COMMAND_CONF)
+		priv->under_config = 1;
+
+	/* Issuing command */
+	arlan_lock_card_access(dev);
+	if (priv->waiting_command_mask & ARLAN_COMMAND_POWERUP)
+	{
+	//     if (readControlRegister(dev) & (ARLAN_ACCESS && ARLAN_POWER))
+		setPowerOn(dev);
+		arlan_interrupt_lancpu(dev);
+		priv->waiting_command_mask &= ~ARLAN_COMMAND_POWERUP;
+		priv->waiting_command_mask |= ARLAN_COMMAND_RESET;
+		priv->card_polling_interval = HZ / 10;
+	}
+	else if (priv->waiting_command_mask & ARLAN_COMMAND_ACTIVATE)
+	{
+		WRITESHMB(arlan->commandByte, ARLAN_COM_ACTIVATE);
+		arlan_interrupt_lancpu(dev);
+		priv->waiting_command_mask &= ~ARLAN_COMMAND_ACTIVATE;
+		priv->card_polling_interval = HZ / 10;
+	}
+	else if (priv->waiting_command_mask & ARLAN_COMMAND_RX_ABORT)
+	{
+		if (priv->rx_command_given)
+		{
+			WRITESHMB(arlan->commandByte, ARLAN_COM_RX_ABORT);
+			arlan_interrupt_lancpu(dev);
+			priv->rx_command_given = 0;
+		}
+		priv->waiting_command_mask &= ~ARLAN_COMMAND_RX_ABORT;
+		priv->card_polling_interval = 1;
+	}
+	else if (priv->waiting_command_mask & ARLAN_COMMAND_TX_ABORT)
+	{
+		if (priv->tx_command_given)
+		{
+			WRITESHMB(arlan->commandByte, ARLAN_COM_TX_ABORT);
+			arlan_interrupt_lancpu(dev);
+			priv->tx_command_given = 0;
+		}
+		priv->waiting_command_mask &= ~ARLAN_COMMAND_TX_ABORT;
+		priv->card_polling_interval = 1;
+	}
+	else if (priv->waiting_command_mask & ARLAN_COMMAND_RESET)
+	{
+		priv->under_reset=1;
+		netif_stop_queue (dev);
+
+		arlan_drop_tx(dev);
+		if (priv->tx_command_given || priv->rx_command_given)
+		{
+			printk(KERN_ERR "%s: Reset under tx or rx command \n", dev->name);
+		}
+		netif_stop_queue (dev);
+		if (arlan_debug & ARLAN_DEBUG_RESET)
+			printk(KERN_ERR "%s: Doing chip reset\n", dev->name);
+		priv->lastReset = jiffies;
+		WRITESHM(arlan->commandByte, 0, u_char);
+		/* hold card in reset state */
+		setHardwareReset(dev);
+		/* set reset flag and then release reset */
+		WRITESHM(arlan->resetFlag, 0xff, u_char);
+		clearChannelAttention(dev);
+		clearHardwareReset(dev);
+		priv->card_polling_interval = HZ / 4;
+		priv->waiting_command_mask &= ~ARLAN_COMMAND_RESET;
+		priv->waiting_command_mask |= ARLAN_COMMAND_INT_RACK;
+//		priv->waiting_command_mask |= ARLAN_COMMAND_INT_RENABLE; 
+//		priv->waiting_command_mask |= ARLAN_COMMAND_RX;
+	}
+	else if (priv->waiting_command_mask & ARLAN_COMMAND_INT_RACK)
+	{
+		clearHardwareReset(dev);
+		clearClearInterrupt(dev);
+		setClearInterrupt(dev);
+		setInterruptEnable(dev);
+		priv->waiting_command_mask &= ~ARLAN_COMMAND_INT_RACK;
+		priv->waiting_command_mask |= ARLAN_COMMAND_CONF;
+		priv->under_config = 1;
+		priv->under_reset = 0;
+	}
+	else if (priv->waiting_command_mask & ARLAN_COMMAND_INT_RENABLE)
+	{
+		setInterruptEnable(dev);
+		priv->waiting_command_mask &= ~ARLAN_COMMAND_INT_RENABLE;
+	}
+	else if (priv->waiting_command_mask & ARLAN_COMMAND_CONF)
+	{
+		if (priv->tx_command_given || priv->rx_command_given)
+		{
+			printk(KERN_ERR "%s: Reset under tx or rx command \n", dev->name);
+		}
+		arlan_drop_tx(dev);
+		setInterruptEnable(dev);
+		arlan_hw_config(dev);
+		arlan_interrupt_lancpu(dev);
+		priv->waiting_command_mask &= ~ARLAN_COMMAND_CONF;
+		priv->card_polling_interval = HZ / 10;
+//		priv->waiting_command_mask |= ARLAN_COMMAND_INT_RACK;   
+//		priv->waiting_command_mask |= ARLAN_COMMAND_INT_ENABLE; 
+		priv->waiting_command_mask |= ARLAN_COMMAND_CONF_WAIT;
+	}
+	else if (priv->waiting_command_mask & ARLAN_COMMAND_CONF_WAIT)
+	{
+		if (READSHMB(arlan->configuredStatusFlag) != 0 &&
+			READSHMB(arlan->diagnosticInfo) == 0xff)
+		{
+			priv->waiting_command_mask &= ~ARLAN_COMMAND_CONF_WAIT;
+			priv->waiting_command_mask |= ARLAN_COMMAND_RX;
+			priv->waiting_command_mask |= ARLAN_COMMAND_TBUSY_CLEAR;
+			priv->card_polling_interval = HZ / 10;
+			priv->tx_command_given = 0;
+			priv->under_config = 0;
+		}
+		else
+		{
+			priv->card_polling_interval = 1;
+			if (arlan_debug & ARLAN_DEBUG_TIMING)
+				printk(KERN_ERR "configure delayed \n");
+		}
+	}
+	else if (priv->waiting_command_mask & ARLAN_COMMAND_RX)
+	{
+		if (!registrationBad(dev))
+		{
+			setInterruptEnable(dev);
+			memset_io(arlan->commandParameter, 0, 0xf);
+			WRITESHMB(arlan->commandByte, ARLAN_COM_INT | ARLAN_COM_RX_ENABLE);
+			WRITESHMB(arlan->commandParameter[0], conf->rxParameter);
+			arlan_interrupt_lancpu(dev);
+			priv->rx_command_given = 0; // mnjah, bad
+			priv->waiting_command_mask &= ~ARLAN_COMMAND_RX;
+			priv->card_polling_interval = 1;
+		}
+		else
+			priv->card_polling_interval = 2;
+	}
+	else if (priv->waiting_command_mask & ARLAN_COMMAND_TBUSY_CLEAR)
+	{
+		if ( !registrationBad(dev) &&
+		     (netif_queue_stopped(dev) || !netif_running(dev)) )
+			{
+				priv->waiting_command_mask &= ~ARLAN_COMMAND_TBUSY_CLEAR;
+				netif_wake_queue (dev);
+			}
+	}
+	else if (priv->waiting_command_mask & ARLAN_COMMAND_TX)
+	{
+		if (!test_and_set_bit(0, (void *) &priv->tx_command_given))
+		{
+			if (time_after(jiffies, 
+				       priv->tx_last_sent + us2ticks(conf->rx_tweak1))
+			    || time_before(jiffies,
+					   priv->last_rx_int_ack_time + us2ticks(conf->rx_tweak2)))
+			{
+				setInterruptEnable(dev);
+				memset_io(arlan->commandParameter, 0, 0xf);
+				WRITESHMB(arlan->commandByte, ARLAN_COM_TX_ENABLE | ARLAN_COM_INT);
+				memcpy_toio(arlan->commandParameter, &TXLAST(dev), 14);
+//				for ( i=1 ; i < 15 ; i++) printk("%02x:",READSHMB(arlan->commandParameter[i]));
+				priv->tx_last_sent = jiffies;
+				arlan_interrupt_lancpu(dev);
+				priv->tx_command_given = 1;
+				priv->waiting_command_mask &= ~ARLAN_COMMAND_TX;
+				priv->card_polling_interval = 1;
+			}
+			else
+			{
+				priv->tx_command_given = 0;
+				priv->card_polling_interval = 1;
+			}
+		} 
+		else if (arlan_debug & ARLAN_DEBUG_CHAIN_LOCKS)
+			printk(KERN_ERR "tx command when tx chain locked \n");
+	}
+	else if (priv->waiting_command_mask & ARLAN_COMMAND_NOOPINT)
+	{
+		{
+			WRITESHMB(arlan->commandByte, ARLAN_COM_NOP | ARLAN_COM_INT);
+		}
+		arlan_interrupt_lancpu(dev);
+		priv->waiting_command_mask &= ~ARLAN_COMMAND_NOOPINT;
+		priv->card_polling_interval = HZ / 3;
+	}
+	else if (priv->waiting_command_mask & ARLAN_COMMAND_NOOP)
+	{
+		WRITESHMB(arlan->commandByte, ARLAN_COM_NOP);
+		arlan_interrupt_lancpu(dev);
+		priv->waiting_command_mask &= ~ARLAN_COMMAND_NOOP;
+		priv->card_polling_interval = HZ / 3;
+	}
+	else if (priv->waiting_command_mask & ARLAN_COMMAND_SLOW_POLL)
+	{
+		WRITESHMB(arlan->commandByte, ARLAN_COM_GOTO_SLOW_POLL);
+		arlan_interrupt_lancpu(dev);
+		priv->waiting_command_mask &= ~ARLAN_COMMAND_SLOW_POLL;
+		priv->card_polling_interval = HZ / 3;
+	} 
+	else if (priv->waiting_command_mask & ARLAN_COMMAND_POWERDOWN)
+	{
+		setPowerOff(dev);
+		if (arlan_debug & ARLAN_DEBUG_CARD_STATE)
+			printk(KERN_WARNING "%s: Arlan Going Standby\n", dev->name);
+		priv->waiting_command_mask &= ~ARLAN_COMMAND_POWERDOWN;
+		priv->card_polling_interval = 3 * HZ;
+	}
+	arlan_unlock_card_access(dev);
+	for (i = 0; READSHMB(arlan->commandByte) && i < 20; i++)
+		udelay(10);
+	if (READSHMB(arlan->commandByte))
+		if (arlan_debug & ARLAN_DEBUG_CARD_STATE)
+			printk(KERN_ERR "card busy leaving command %lx\n", priv->waiting_command_mask);
+
+	spin_unlock_irqrestore(&priv->lock, flags);
+	ARLAN_DEBUG_EXIT("arlan_command");
+	priv->last_command_buff_free_time = jiffies;
+	return 0;
+
+card_busy_end:
+	if (time_after(jiffies, priv->last_command_buff_free_time + HZ))
+		priv->waiting_command_mask |= ARLAN_COMMAND_CLEAN_AND_RESET;
+
+	if (arlan_debug & ARLAN_DEBUG_CARD_STATE)
+		printk(KERN_ERR "%s arlan_command card busy end \n", dev->name);
+	spin_unlock_irqrestore(&priv->lock, flags);
+	ARLAN_DEBUG_EXIT("arlan_command");
+	return 1;
+
+bad_end:
+	printk(KERN_ERR "%s arlan_command bad end \n", dev->name);
+
+	spin_unlock_irqrestore(&priv->lock, flags);
+	ARLAN_DEBUG_EXIT("arlan_command");
+
+	return -1;
+}
+
+static inline void arlan_command_process(struct net_device *dev)
+{
+	struct arlan_private *priv = netdev_priv(dev);
+
+	int times = 0;
+	while (priv->waiting_command_mask && times < 8)
+	{
+		if (priv->waiting_command_mask)
+		{
+			if (arlan_command(dev, 0))
+				break;
+			times++;
+		}
+		/* if long command, we won't repeat trying */ ;
+		if (priv->card_polling_interval > 1)
+			break;
+		times++;
+	}
+}
+
+
+static inline void arlan_retransmit_now(struct net_device *dev)
+{
+	struct arlan_private *priv = netdev_priv(dev);
+
+
+	ARLAN_DEBUG_ENTRY("arlan_retransmit_now");
+	if (TXLAST(dev).offset == 0)
+	{
+		if (TXHEAD(dev).offset)
+		{
+			priv->txLast = 0;
+			IFDEBUG(ARLAN_DEBUG_TX_CHAIN) printk(KERN_DEBUG "TX buff switch to head \n");
+
+		}
+		else if (TXTAIL(dev).offset)
+		{
+			IFDEBUG(ARLAN_DEBUG_TX_CHAIN) printk(KERN_DEBUG "TX buff switch to tail \n");
+			priv->txLast = 1;
+		}
+		else
+			IFDEBUG(ARLAN_DEBUG_TX_CHAIN) printk(KERN_ERR "ReTransmit buff empty");
+		netif_wake_queue (dev);
+		return;
+
+	}
+	arlan_command(dev, ARLAN_COMMAND_TX);
+
+	priv->Conf->driverRetransmissions++;
+	priv->retransmissions++;
+
+	IFDEBUG(ARLAN_DEBUG_TX_CHAIN) printk("Retransmit %d bytes \n", TXLAST(dev).length);
+
+	ARLAN_DEBUG_EXIT("arlan_retransmit_now");
+}
+
+
+
+static void arlan_registration_timer(unsigned long data)
+{
+	struct net_device *dev = (struct net_device *) data;
+	struct arlan_private *priv = netdev_priv(dev);
+	int bh_mark_needed = 0;
+	int next_tick = 1;
+	long lostTime = ((long)jiffies - (long)priv->registrationLastSeen)
+			* (1000/HZ);
+
+	if (registrationBad(dev))
+	{
+		priv->registrationLostCount++;
+		if (lostTime > 7000 && lostTime < 7200)
+		{
+			printk(KERN_NOTICE "%s registration Lost \n", dev->name);
+		}
+		if (lostTime / priv->reRegisterExp > 2000)
+			arlan_command(dev, ARLAN_COMMAND_CLEAN_AND_CONF);
+		if (lostTime / (priv->reRegisterExp) > 3500)
+			arlan_command(dev, ARLAN_COMMAND_CLEAN_AND_RESET);
+		if (priv->reRegisterExp < 400)
+			priv->reRegisterExp += 2;
+		if (lostTime > 7200)
+		{
+			next_tick = HZ;
+			arlan_command(dev, ARLAN_COMMAND_CLEAN_AND_RESET);
+		}
+	}
+	else
+	{
+		if (priv->Conf->registrationMode && lostTime > 10000 &&
+			priv->registrationLostCount)
+		{
+			printk(KERN_NOTICE "%s registration is back after %ld milliseconds\n",
+			       dev->name, lostTime);
+		}
+		priv->registrationLastSeen = jiffies;
+		priv->registrationLostCount = 0;
+		priv->reRegisterExp = 1;
+		if (!netif_running(dev) )
+			netif_wake_queue(dev);
+		if (time_after(priv->tx_last_sent,priv->tx_last_cleared) &&
+		    time_after(jiffies, priv->tx_last_sent * 5*HZ) ){
+			arlan_command(dev, ARLAN_COMMAND_CLEAN_AND_RESET);		
+			priv->tx_last_cleared = jiffies;
+		}
+	}
+
+
+	if (!registrationBad(dev) && priv->ReTransmitRequested)
+	{
+		IFDEBUG(ARLAN_DEBUG_TX_CHAIN)
+			printk(KERN_ERR "Retransmit from timer \n");
+		priv->ReTransmitRequested = 0;
+		arlan_retransmit_now(dev);
+	}
+	if (!registrationBad(dev) &&
+		time_after(jiffies, priv->tx_done_delayed) &&
+		priv->tx_done_delayed != 0)
+	{
+		TXLAST(dev).offset = 0;
+		if (priv->txLast)
+			priv->txLast = 0;
+		else if (TXTAIL(dev).offset)
+			priv->txLast = 1;
+		if (TXLAST(dev).offset)
+		{
+			arlan_retransmit_now(dev);
+			dev->trans_start = jiffies;
+		}
+		if (!(TXHEAD(dev).offset && TXTAIL(dev).offset))
+		{
+			netif_wake_queue (dev);
+		}
+		priv->tx_done_delayed = 0;
+		bh_mark_needed = 1;
+	}
+	if (bh_mark_needed)
+	{
+		netif_wake_queue (dev);
+	}
+	arlan_process_interrupt(dev);
+
+	if (next_tick < priv->card_polling_interval)
+		next_tick = priv->card_polling_interval;
+
+	priv->timer.expires = jiffies + next_tick;
+
+	add_timer(&priv->timer);
+}
+
+
+#ifdef ARLAN_DEBUGGING
+
+static void arlan_print_registers(struct net_device *dev, int line)
+{
+	struct arlan_private *priv = netdev_priv(dev);
+	volatile struct arlan_shmem *arlan = priv->card;
+
+	u_char hostcpuLock, lancpuLock, controlRegister, cntrlRegImage,
+		txStatus, rxStatus, interruptInProgress, commandByte;
+
+
+	ARLAN_DEBUG_ENTRY("arlan_print_registers");
+	READSHM(interruptInProgress, arlan->interruptInProgress, u_char);
+	READSHM(hostcpuLock, arlan->hostcpuLock, u_char);
+	READSHM(lancpuLock, arlan->lancpuLock, u_char);
+	READSHM(controlRegister, arlan->controlRegister, u_char);
+	READSHM(cntrlRegImage, arlan->cntrlRegImage, u_char);
+	READSHM(txStatus, arlan->txStatus, u_char);
+	READSHM(rxStatus, arlan->rxStatus, u_char);
+	READSHM(commandByte, arlan->commandByte, u_char);
+
+	printk(KERN_WARNING "line %04d IP %02x HL %02x LL %02x CB %02x CR %02x CRI %02x TX %02x RX %02x\n",
+		line, interruptInProgress, hostcpuLock, lancpuLock, commandByte,
+		controlRegister, cntrlRegImage, txStatus, rxStatus);
+
+	ARLAN_DEBUG_EXIT("arlan_print_registers");
+}
+#endif
+
+
+static int arlan_hw_tx(struct net_device *dev, char *buf, int length)
+{
+	int i;
+
+	struct arlan_private *priv = netdev_priv(dev);
+	volatile struct arlan_shmem __iomem *arlan = priv->card;
+	struct arlan_conf_stru *conf = priv->Conf;
+
+	int tailStarts = 0x800;
+	int headEnds = 0x0;
+
+
+	ARLAN_DEBUG_ENTRY("arlan_hw_tx");
+	if (TXHEAD(dev).offset)
+		headEnds = (((TXHEAD(dev).offset + TXHEAD(dev).length - offsetof(struct arlan_shmem, txBuffer)) / 64) + 1) * 64;
+	if (TXTAIL(dev).offset)
+		tailStarts = 0x800 - (((TXTAIL(dev).offset - offsetof(struct arlan_shmem, txBuffer)) / 64) + 2) * 64;
+
+
+	if (!TXHEAD(dev).offset && length < tailStarts)
+	{
+		IFDEBUG(ARLAN_DEBUG_TX_CHAIN)
+			printk(KERN_ERR "TXHEAD insert, tailStart %d\n", tailStarts);
+
+		TXHEAD(dev).offset =
+			offsetof(struct arlan_shmem, txBuffer);
+		TXHEAD(dev).length = length - ARLAN_FAKE_HDR_LEN;
+		for (i = 0; i < 6; i++)
+			TXHEAD(dev).dest[i] = buf[i];
+		TXHEAD(dev).clear = conf->txClear;
+		TXHEAD(dev).retries = conf->txRetries;	/* 0 is use default */
+		TXHEAD(dev).routing = conf->txRouting;
+		TXHEAD(dev).scrambled = conf->txScrambled;
+		memcpy_toio((char __iomem *)arlan + TXHEAD(dev).offset, buf + ARLAN_FAKE_HDR_LEN, TXHEAD(dev).length);
+	}
+	else if (!TXTAIL(dev).offset && length < (0x800 - headEnds))
+	{
+		IFDEBUG(ARLAN_DEBUG_TX_CHAIN)
+			printk(KERN_ERR "TXTAIL insert, headEnd %d\n", headEnds);
+
+		TXTAIL(dev).offset =
+			offsetof(struct arlan_shmem, txBuffer) + 0x800 - (length / 64 + 2) * 64;
+		TXTAIL(dev).length = length - ARLAN_FAKE_HDR_LEN;
+		for (i = 0; i < 6; i++)
+			TXTAIL(dev).dest[i] = buf[i];
+		TXTAIL(dev).clear = conf->txClear;
+		TXTAIL(dev).retries = conf->txRetries;
+		TXTAIL(dev).routing = conf->txRouting;
+		TXTAIL(dev).scrambled = conf->txScrambled;
+		memcpy_toio(((char __iomem *)arlan + TXTAIL(dev).offset), buf + ARLAN_FAKE_HDR_LEN, TXTAIL(dev).length);
+	}
+	else
+	{
+		netif_stop_queue (dev);
+		IFDEBUG(ARLAN_DEBUG_TX_CHAIN)
+			printk(KERN_ERR "TX TAIL & HEAD full, return, tailStart %d headEnd %d\n", tailStarts, headEnds);
+		return -1;
+	}
+	priv->out_bytes += length;
+	priv->out_bytes10 += length;
+	if (conf->measure_rate < 1)
+		conf->measure_rate = 1;
+	if (time_after(jiffies, priv->out_time + conf->measure_rate * HZ))
+	{
+		conf->out_speed = priv->out_bytes / conf->measure_rate;
+		priv->out_bytes = 0;
+		priv->out_time = jiffies;
+	}
+	if (time_after(jiffies, priv->out_time10 + conf->measure_rate * 10*HZ))
+	{
+		conf->out_speed10 = priv->out_bytes10 / (10 * conf->measure_rate);
+		priv->out_bytes10 = 0;
+		priv->out_time10 = jiffies;
+	}
+	if (TXHEAD(dev).offset && TXTAIL(dev).offset)
+	{
+		netif_stop_queue (dev);
+		return 0;
+	}
+	else
+		netif_start_queue (dev);
+
+
+	IFDEBUG(ARLAN_DEBUG_HEADER_DUMP)
+		printk(KERN_WARNING "%s Transmit t %2x:%2x:%2x:%2x:%2x:%2x f %2x:%2x:%2x:%2x:%2x:%2x \n", dev->name,
+		   (unsigned char) buf[0], (unsigned char) buf[1], (unsigned char) buf[2], (unsigned char) buf[3],
+		   (unsigned char) buf[4], (unsigned char) buf[5], (unsigned char) buf[6], (unsigned char) buf[7],
+		   (unsigned char) buf[8], (unsigned char) buf[9], (unsigned char) buf[10], (unsigned char) buf[11]);
+
+	IFDEBUG(ARLAN_DEBUG_TX_CHAIN) printk(KERN_ERR "TX command prepare for buffer %d\n", priv->txLast);
+
+	arlan_command(dev, ARLAN_COMMAND_TX);
+
+	priv->tx_last_sent = jiffies;
+
+	IFDEBUG(ARLAN_DEBUG_TX_CHAIN) printk("%s TX Qued %d bytes \n", dev->name, length);
+
+	ARLAN_DEBUG_EXIT("arlan_hw_tx");
+
+	return 0;
+}
+
+
+static int arlan_hw_config(struct net_device *dev)
+{
+	struct arlan_private *priv = netdev_priv(dev);
+	volatile struct arlan_shmem __iomem *arlan = priv->card;
+	struct arlan_conf_stru *conf = priv->Conf;
+
+	ARLAN_DEBUG_ENTRY("arlan_hw_config");
+
+	printk(KERN_NOTICE "%s arlan configure called \n", dev->name);
+	if (arlan_EEPROM_bad)
+		printk(KERN_NOTICE "arlan configure with eeprom bad option \n");
+
+
+	WRITESHM(arlan->spreadingCode, conf->spreadingCode, u_char);
+	WRITESHM(arlan->channelSet, conf->channelSet, u_char);
+
+	if (arlan_EEPROM_bad)
+		WRITESHM(arlan->defaultChannelSet, conf->channelSet, u_char);
+
+	WRITESHM(arlan->channelNumber, conf->channelNumber, u_char);
+
+	WRITESHM(arlan->scramblingDisable, conf->scramblingDisable, u_char);
+	WRITESHM(arlan->txAttenuation, conf->txAttenuation, u_char);
+
+	WRITESHM(arlan->systemId, conf->systemId, u_int);
+
+	WRITESHM(arlan->maxRetries, conf->maxRetries, u_char);
+	WRITESHM(arlan->receiveMode, conf->receiveMode, u_char);
+	WRITESHM(arlan->priority, conf->priority, u_char);
+	WRITESHM(arlan->rootOrRepeater, conf->rootOrRepeater, u_char);
+	WRITESHM(arlan->SID, conf->SID, u_int);
+
+	WRITESHM(arlan->registrationMode, conf->registrationMode, u_char);
+
+	WRITESHM(arlan->registrationFill, conf->registrationFill, u_char);
+	WRITESHM(arlan->localTalkAddress, conf->localTalkAddress, u_char);
+	WRITESHM(arlan->codeFormat, conf->codeFormat, u_char);
+	WRITESHM(arlan->numChannels, conf->numChannels, u_char);
+	WRITESHM(arlan->channel1, conf->channel1, u_char);
+	WRITESHM(arlan->channel2, conf->channel2, u_char);
+	WRITESHM(arlan->channel3, conf->channel3, u_char);
+	WRITESHM(arlan->channel4, conf->channel4, u_char);
+	WRITESHM(arlan->radioNodeId, conf->radioNodeId, u_short);
+	WRITESHM(arlan->SID, conf->SID, u_int);
+	WRITESHM(arlan->waitTime, conf->waitTime, u_short);
+	WRITESHM(arlan->lParameter, conf->lParameter, u_short);
+	memcpy_toio(&(arlan->_15), &(conf->_15), 3);
+	WRITESHM(arlan->_15, conf->_15, u_short);
+	WRITESHM(arlan->headerSize, conf->headerSize, u_short);
+	if (arlan_EEPROM_bad)
+		WRITESHM(arlan->hardwareType, conf->hardwareType, u_char);
+	WRITESHM(arlan->radioType, conf->radioType, u_char);
+	if (arlan_EEPROM_bad)
+		WRITESHM(arlan->radioModule, conf->radioType, u_char);
+
+	memcpy_toio(arlan->encryptionKey + keyStart, encryptionKey, 8);
+	memcpy_toio(arlan->name, conf->siteName, 16);
+
+	WRITESHMB(arlan->commandByte, ARLAN_COM_INT | ARLAN_COM_CONF);	/* do configure */
+	memset_io(arlan->commandParameter, 0, 0xf);	/* 0xf */
+	memset_io(arlan->commandParameter + 1, 0, 2);
+	if (conf->writeEEPROM)
+	{
+		  memset_io(arlan->commandParameter, conf->writeEEPROM, 1);
+//		conf->writeEEPROM=0;
+	}
+	if (conf->registrationMode && conf->registrationInterrupts)
+		memset_io(arlan->commandParameter + 3, 1, 1);
+	else
+		memset_io(arlan->commandParameter + 3, 0, 1);
+
+	priv->irq_test_done = 0;
+
+	if (conf->tx_queue_len)
+		dev->tx_queue_len = conf->tx_queue_len;
+	udelay(100);
+
+	ARLAN_DEBUG_EXIT("arlan_hw_config");
+	return 0;
+}
+
+
+static int arlan_read_card_configuration(struct net_device *dev)
+{
+	u_char tlx415;
+	struct arlan_private *priv = netdev_priv(dev);
+	volatile struct arlan_shmem __iomem *arlan = priv->card;
+	struct arlan_conf_stru *conf = priv->Conf;
+
+	ARLAN_DEBUG_ENTRY("arlan_read_card_configuration");
+
+	if (radioNodeId == radioNodeIdUNKNOWN)
+	{
+		READSHM(conf->radioNodeId, arlan->radioNodeId, u_short);
+	}
+	else
+		conf->radioNodeId = radioNodeId;
+		
+	if (SID == SIDUNKNOWN)
+	{
+		READSHM(conf->SID, arlan->SID, u_int);
+	}
+	else conf->SID = SID;
+		
+	if (spreadingCode == spreadingCodeUNKNOWN)
+	{
+		  READSHM(conf->spreadingCode, arlan->spreadingCode, u_char);
+	}
+	else
+		conf->spreadingCode = spreadingCode;
+		
+	if (channelSet == channelSetUNKNOWN)
+	{
+		READSHM(conf->channelSet, arlan->channelSet, u_char);
+	}
+	else conf->channelSet = channelSet;
+
+	if (channelNumber == channelNumberUNKNOWN)
+	{
+		READSHM(conf->channelNumber, arlan->channelNumber, u_char);
+	}
+	else conf->channelNumber = channelNumber;
+	
+	READSHM(conf->scramblingDisable, arlan->scramblingDisable, u_char);
+	READSHM(conf->txAttenuation, arlan->txAttenuation, u_char);
+	
+	if (systemId == systemIdUNKNOWN)
+	{
+		READSHM(conf->systemId, arlan->systemId, u_int);
+	} 
+	else conf->systemId = systemId;
+	
+	READSHM(conf->maxDatagramSize, arlan->maxDatagramSize, u_short);
+	READSHM(conf->maxFrameSize, arlan->maxFrameSize, u_short);
+	READSHM(conf->maxRetries, arlan->maxRetries, u_char);
+	READSHM(conf->receiveMode, arlan->receiveMode, u_char);
+	READSHM(conf->priority, arlan->priority, u_char);
+	READSHM(conf->rootOrRepeater, arlan->rootOrRepeater, u_char);
+
+	if (SID == SIDUNKNOWN)
+	{
+		  READSHM(conf->SID, arlan->SID, u_int);
+	}
+	else conf->SID = SID;
+	
+	if (registrationMode == registrationModeUNKNOWN)
+	{
+		  READSHM(conf->registrationMode, arlan->registrationMode, u_char);
+	}
+	else conf->registrationMode = registrationMode;
+	
+	READSHM(conf->registrationFill, arlan->registrationFill, u_char);
+	READSHM(conf->localTalkAddress, arlan->localTalkAddress, u_char);
+	READSHM(conf->codeFormat, arlan->codeFormat, u_char);
+	READSHM(conf->numChannels, arlan->numChannels, u_char);
+	READSHM(conf->channel1, arlan->channel1, u_char);
+	READSHM(conf->channel2, arlan->channel2, u_char);
+	READSHM(conf->channel3, arlan->channel3, u_char);
+	READSHM(conf->channel4, arlan->channel4, u_char);
+	READSHM(conf->waitTime, arlan->waitTime, u_short);
+	READSHM(conf->lParameter, arlan->lParameter, u_short);
+	READSHM(conf->_15, arlan->_15, u_short);
+	READSHM(conf->headerSize, arlan->headerSize, u_short);
+	READSHM(conf->hardwareType, arlan->hardwareType, u_char);
+	READSHM(conf->radioType, arlan->radioModule, u_char);
+	
+	if (conf->radioType == 0)
+		conf->radioType = 0xc;
+
+	WRITESHM(arlan->configStatus, 0xA5, u_char);
+	READSHM(tlx415, arlan->configStatus, u_char);
+	
+	if (tlx415 != 0xA5)
+		printk(KERN_INFO "%s tlx415 chip \n", dev->name);
+	
+	conf->txClear = 0;
+	conf->txRetries = 1;
+	conf->txRouting = 1;
+	conf->txScrambled = 0;
+	conf->rxParameter = 1;
+	conf->txTimeoutMs = 4000;
+	conf->waitCardTimeout = 100000;
+	conf->receiveMode = ARLAN_RCV_CLEAN;
+	memcpy_fromio(conf->siteName, arlan->name, 16);
+	conf->siteName[16] = '\0';
+	conf->retries = retries;
+	conf->tx_delay_ms = tx_delay_ms;
+	conf->ReTransmitPacketMaxSize = 200;
+	conf->waitReTransmitPacketMaxSize = 200;
+	conf->txAckTimeoutMs = 900;
+	conf->fastReTransCount = 3;
+
+	ARLAN_DEBUG_EXIT("arlan_read_card_configuration");
+
+	return 0;
+}
+
+
+static int lastFoundAt = 0xbe000;
+
+
+/*
+ * 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.
+ */
+#define ARLAN_SHMEM_SIZE	0x2000
+static int __init arlan_check_fingerprint(unsigned long memaddr)
+{
+	static const char probeText[] = "TELESYSTEM SLW INC.    ARLAN \0";
+	volatile struct arlan_shmem __iomem *arlan = (struct arlan_shmem *) memaddr;
+	unsigned long paddr = virt_to_phys((void *) memaddr);
+	char tempBuf[49];
+
+	ARLAN_DEBUG_ENTRY("arlan_check_fingerprint");
+
+	if (!request_mem_region(paddr, ARLAN_SHMEM_SIZE, "arlan")) {
+		// printk(KERN_WARNING "arlan: memory region %lx excluded from probing \n",paddr);
+		return -ENODEV;
+	}
+
+	memcpy_fromio(tempBuf, arlan->textRegion, 29);
+	tempBuf[30] = 0;
+
+	/* check for card at this address */
+	if (0 != strncmp(tempBuf, probeText, 29)){
+ 		release_mem_region(paddr, ARLAN_SHMEM_SIZE);
+		return -ENODEV;
+	}
+
+//   printk(KERN_INFO "arlan found at 0x%x \n",memaddr);
+	ARLAN_DEBUG_EXIT("arlan_check_fingerprint");
+
+	return 0;
+}
+
+static int arlan_change_mtu(struct net_device *dev, int new_mtu)
+{
+	struct arlan_private *priv = netdev_priv(dev);
+	struct arlan_conf_stru *conf = priv->Conf;
+
+	ARLAN_DEBUG_ENTRY("arlan_change_mtu");
+	if (new_mtu > 2032)
+		return -EINVAL;
+	dev->mtu = new_mtu;
+	if (new_mtu < 256)
+		new_mtu = 256;	/* cards book suggests 1600 */
+	conf->maxDatagramSize = new_mtu;
+	conf->maxFrameSize = new_mtu + 48;
+
+	arlan_command(dev, ARLAN_COMMAND_CLEAN_AND_CONF);
+	printk(KERN_NOTICE "%s mtu changed to %d \n", dev->name, new_mtu);
+
+	ARLAN_DEBUG_EXIT("arlan_change_mtu");
+
+	return 0;
+}
+
+static int arlan_mac_addr(struct net_device *dev, void *p)
+{
+	struct sockaddr *addr = p;
+
+
+	ARLAN_DEBUG_ENTRY("arlan_mac_addr");
+	return -EINVAL;
+
+	if (!netif_running(dev))
+		return -EBUSY;
+	memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
+
+	ARLAN_DEBUG_EXIT("arlan_mac_addr");
+	return 0;
+}
+
+
+
+static int __init arlan_setup_device(struct net_device *dev, int num)
+{
+	struct arlan_private *ap = netdev_priv(dev);
+	int err;
+
+	ARLAN_DEBUG_ENTRY("arlan_setup_device");
+
+	ap->conf = (struct arlan_shmem *)(ap+1);
+
+	dev->tx_queue_len = tx_queue_len;
+	dev->open = arlan_open;
+	dev->stop = arlan_close;
+	dev->hard_start_xmit = arlan_tx;
+	dev->get_stats = arlan_statistics;
+	dev->set_multicast_list = arlan_set_multicast;
+	dev->change_mtu = arlan_change_mtu;
+	dev->set_mac_address = arlan_mac_addr;
+	dev->tx_timeout = arlan_tx_timeout;
+	dev->watchdog_timeo = 3*HZ;
+	
+	ap->irq_test_done = 0;
+	ap->Conf = &arlan_conf[num];
+
+	ap->Conf->pre_Command_Wait = 40;
+	ap->Conf->rx_tweak1 = 30;
+	ap->Conf->rx_tweak2 = 0;
+
+
+	err = register_netdev(dev);
+	if (err) {
+		release_mem_region(virt_to_phys((void *) dev->mem_start), 
+			   ARLAN_SHMEM_SIZE);
+		free_netdev(dev);
+		return err;
+	}
+	arlan_device[num] = dev;
+	ARLAN_DEBUG_EXIT("arlan_setup_device");
+	return 0;
+}
+
+static int __init arlan_probe_here(struct net_device *dev, 
+				   unsigned long memaddr)
+{
+	struct arlan_private *ap = netdev_priv(dev);
+
+	ARLAN_DEBUG_ENTRY("arlan_probe_here");
+
+	if (arlan_check_fingerprint(memaddr))
+		return -ENODEV;
+
+	printk(KERN_NOTICE "%s: Arlan found at %x, \n ", dev->name, 
+	       (int) virt_to_phys((void*)memaddr));
+
+	ap->card = (void *) memaddr;
+	dev->mem_start = memaddr;
+	dev->mem_end = memaddr + ARLAN_SHMEM_SIZE-1;
+
+	if (dev->irq < 2)
+	{
+		READSHM(dev->irq, ap->card->irqLevel, u_char);
+	} else if (dev->irq == 2)
+		dev->irq = 9;
+
+	arlan_read_card_configuration(dev);
+
+	ARLAN_DEBUG_EXIT("arlan_probe_here");
+	return 0;
+}
+
+
+static int arlan_open(struct net_device *dev)
+{
+	struct arlan_private *priv = netdev_priv(dev);
+	volatile struct arlan_shmem __iomem *arlan = priv->card;
+	int ret = 0;
+
+	ARLAN_DEBUG_ENTRY("arlan_open");
+
+	ret = request_irq(dev->irq, &arlan_interrupt, 0, dev->name, dev);
+	if (ret)
+	{
+		printk(KERN_ERR "%s: unable to get IRQ %d .\n",
+			dev->name, dev->irq);
+		return ret;
+	}
+
+
+	priv->bad = 0;
+	priv->lastReset = 0;
+	priv->reset = 0;
+	memcpy_fromio(dev->dev_addr, arlan->lanCardNodeId, 6);
+	memset(dev->broadcast, 0xff, 6);
+	dev->tx_queue_len = tx_queue_len;
+	priv->interrupt_processing_active = 0;
+	spin_lock_init(&priv->lock);
+
+	netif_start_queue (dev);
+
+	priv->registrationLostCount = 0;
+	priv->registrationLastSeen = jiffies;
+	priv->txLast = 0;
+	priv->tx_command_given = 0;
+	priv->rx_command_given = 0;
+	
+	priv->reRegisterExp = 1;
+	priv->tx_last_sent = jiffies - 1;
+	priv->tx_last_cleared = jiffies;
+	priv->Conf->writeEEPROM = 0;
+	priv->Conf->registrationInterrupts = 1;
+
+	init_timer(&priv->timer);
+	priv->timer.expires = jiffies + HZ / 10;
+	priv->timer.data = (unsigned long) dev;
+	priv->timer.function = &arlan_registration_timer;	/* timer handler */
+
+	arlan_command(dev, ARLAN_COMMAND_POWERUP | ARLAN_COMMAND_LONG_WAIT_NOW);
+	mdelay(200);
+	add_timer(&priv->timer);
+
+	ARLAN_DEBUG_EXIT("arlan_open");
+	return 0;
+}
+
+
+static void arlan_tx_timeout (struct net_device *dev)
+{
+	printk(KERN_ERR "%s: arlan transmit timed out, kernel decided\n", dev->name);
+	/* Try to restart the adaptor. */
+	arlan_command(dev, ARLAN_COMMAND_CLEAN_AND_RESET);
+	// dev->trans_start = jiffies;
+	// netif_start_queue (dev);
+}
+
+
+static int arlan_tx(struct sk_buff *skb, struct net_device *dev)
+{
+	short length;
+	unsigned char *buf;
+
+	ARLAN_DEBUG_ENTRY("arlan_tx");
+	
+	length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
+	buf = skb->data;
+
+	if (length + 0x12 > 0x800) {
+		printk(KERN_ERR "TX RING overflow \n");
+		netif_stop_queue (dev);
+	}
+
+	if (arlan_hw_tx(dev, buf, length) == -1)
+		goto bad_end;
+
+	dev->trans_start = jiffies;
+
+	dev_kfree_skb(skb);
+
+	arlan_process_interrupt(dev);
+	ARLAN_DEBUG_EXIT("arlan_tx");
+	return 0;
+
+bad_end:
+	arlan_process_interrupt(dev);
+	netif_stop_queue (dev);
+	ARLAN_DEBUG_EXIT("arlan_tx");
+	return 1;
+}
+
+
+static inline int DoNotReTransmitCrap(struct net_device *dev)
+{
+	struct arlan_private *priv = netdev_priv(dev);
+
+	if (TXLAST(dev).length < priv->Conf->ReTransmitPacketMaxSize)
+		return 1;
+	return 0;
+
+}
+
+static inline int DoNotWaitReTransmitCrap(struct net_device *dev)
+{
+	struct arlan_private *priv = netdev_priv(dev);
+
+	if (TXLAST(dev).length < priv->Conf->waitReTransmitPacketMaxSize)
+		return 1;
+	return 0;
+}
+
+static inline void arlan_queue_retransmit(struct net_device *dev)
+{
+	struct arlan_private *priv = netdev_priv(dev);
+
+	ARLAN_DEBUG_ENTRY("arlan_queue_retransmit");
+
+	if (DoNotWaitReTransmitCrap(dev))
+	{
+		  arlan_drop_tx(dev);
+	} else
+		priv->ReTransmitRequested++;
+
+	ARLAN_DEBUG_EXIT("arlan_queue_retransmit");
+}
+
+static inline void RetryOrFail(struct net_device *dev)
+{
+	struct arlan_private *priv = netdev_priv(dev);
+
+	ARLAN_DEBUG_ENTRY("RetryOrFail");
+
+	if (priv->retransmissions > priv->Conf->retries ||
+	    DoNotReTransmitCrap(dev))
+	{
+		arlan_drop_tx(dev);
+	}
+	else if (priv->bad <= priv->Conf->fastReTransCount)
+	{
+		arlan_retransmit_now(dev);
+	}
+	else arlan_queue_retransmit(dev);
+
+	ARLAN_DEBUG_EXIT("RetryOrFail");
+}
+
+
+static void arlan_tx_done_interrupt(struct net_device *dev, int status)
+{
+	struct arlan_private *priv = netdev_priv(dev);
+
+	ARLAN_DEBUG_ENTRY("arlan_tx_done_interrupt");
+
+	priv->tx_last_cleared = jiffies;
+	priv->tx_command_given = 0;
+	switch (status)
+	{
+		case 1:
+		{
+			IFDEBUG(ARLAN_DEBUG_TX_CHAIN)
+				printk("arlan intr: transmit OK\n");
+			priv->stats.tx_packets++;
+			priv->bad = 0;
+			priv->reset = 0;
+			priv->retransmissions = 0;
+			if (priv->Conf->tx_delay_ms)
+			{
+				priv->tx_done_delayed = jiffies + (priv->Conf->tx_delay_ms * HZ) / 1000 + 1;
+			}
+			else
+			{
+				TXLAST(dev).offset = 0;
+				if (priv->txLast)
+					priv->txLast = 0;
+				else if (TXTAIL(dev).offset)
+					priv->txLast = 1;
+				if (TXLAST(dev).offset)
+				{
+					arlan_retransmit_now(dev);
+					dev->trans_start = jiffies;
+				}
+				if (!TXHEAD(dev).offset || !TXTAIL(dev).offset)
+				{
+					netif_wake_queue (dev);
+				}
+			}
+		}
+		break;
+		
+		case 2:
+		{
+			IFDEBUG(ARLAN_DEBUG_TX_CHAIN)
+				printk("arlan intr: transmit timed out\n");
+			priv->bad += 1;
+			//arlan_queue_retransmit(dev);
+			RetryOrFail(dev);
+		}
+		break;
+
+		case 3:
+		{
+			IFDEBUG(ARLAN_DEBUG_TX_CHAIN)
+				printk("arlan intr: transmit max retries\n");
+			priv->bad += 1;
+			priv->reset = 0;
+			//arlan_queue_retransmit(dev);
+			RetryOrFail(dev);
+		}
+		break;
+		
+		case 4:
+		{
+			IFDEBUG(ARLAN_DEBUG_TX_CHAIN)
+				printk("arlan intr: transmit aborted\n");
+			priv->bad += 1;
+			arlan_queue_retransmit(dev);
+			//RetryOrFail(dev);
+		}
+		break;
+
+		case 5:
+		{
+			IFDEBUG(ARLAN_DEBUG_TX_CHAIN)
+				printk("arlan intr: transmit not registered\n");
+			priv->bad += 1;
+			//debug=101;
+			arlan_queue_retransmit(dev);
+		}
+		break;
+
+		case 6:
+		{
+			IFDEBUG(ARLAN_DEBUG_TX_CHAIN) 
+				printk("arlan intr: transmit destination full\n");
+			priv->bad += 1;
+			priv->reset = 0;
+			//arlan_drop_tx(dev);
+			arlan_queue_retransmit(dev);
+		}
+		break;
+
+		case 7:
+		{
+			IFDEBUG(ARLAN_DEBUG_TX_CHAIN)
+				printk("arlan intr: transmit unknown ack\n");
+			priv->bad += 1;
+			priv->reset = 0;
+			arlan_queue_retransmit(dev);
+		}
+		break;
+		
+		case 8:
+		{
+			IFDEBUG(ARLAN_DEBUG_TX_CHAIN)
+				printk("arlan intr: transmit dest mail box full\n");
+			priv->bad += 1;
+			priv->reset = 0;
+			//arlan_drop_tx(dev);
+			arlan_queue_retransmit(dev);
+		}
+		break;
+
+		case 9:
+		{
+			IFDEBUG(ARLAN_DEBUG_TX_CHAIN)
+				printk("arlan intr: transmit root dest not reg.\n");
+			priv->bad += 1;
+			priv->reset = 1;
+			//arlan_drop_tx(dev);
+			arlan_queue_retransmit(dev);
+		}
+		break;
+
+		default:
+		{
+			printk(KERN_ERR "arlan intr: transmit status unknown\n");
+			priv->bad += 1;
+			priv->reset = 1;
+			arlan_drop_tx(dev);
+		}
+	}
+
+	ARLAN_DEBUG_EXIT("arlan_tx_done_interrupt");
+}
+
+
+static void arlan_rx_interrupt(struct net_device *dev, u_char rxStatus, u_short rxOffset, u_short pkt_len)
+{
+	char *skbtmp;
+	int i = 0;
+
+	struct arlan_private *priv = netdev_priv(dev);
+	volatile struct arlan_shmem __iomem *arlan = priv->card;
+	struct arlan_conf_stru *conf = priv->Conf;
+
+
+	ARLAN_DEBUG_ENTRY("arlan_rx_interrupt");
+	// by spec,   not                WRITESHMB(arlan->rxStatus,0x00);
+	// prohibited here              arlan_command(dev, ARLAN_COMMAND_RX);
+
+	if (pkt_len < 10 || pkt_len > 2048)
+	{
+		printk(KERN_WARNING "%s: got too short or long packet, len %d \n", dev->name, pkt_len);
+		return;
+	}
+	if (rxOffset + pkt_len > 0x2000)
+	{
+		printk("%s: got too long packet, len %d offset %x\n", dev->name, pkt_len, rxOffset);
+		return;
+	}
+	priv->in_bytes += pkt_len;
+	priv->in_bytes10 += pkt_len;
+	if (conf->measure_rate < 1)
+		conf->measure_rate = 1;
+	if (time_after(jiffies, priv->in_time + conf->measure_rate * HZ))
+	{
+		conf->in_speed = priv->in_bytes / conf->measure_rate;
+		priv->in_bytes = 0;
+		priv->in_time = jiffies;
+	}
+	if (time_after(jiffies, priv->in_time10 + conf->measure_rate * 10*HZ))
+	{
+		conf->in_speed10 = priv->in_bytes10 / (10 * conf->measure_rate);
+		priv->in_bytes10 = 0;
+		priv->in_time10 = jiffies;
+	}
+	DEBUGSHM(1, "arlan rcv pkt rxStatus= %d ", arlan->rxStatus, u_char);
+	switch (rxStatus)
+	{
+		case 1:
+		case 2:
+		case 3:
+		{
+			/* Malloc up new buffer. */
+			struct sk_buff *skb;
+
+			DEBUGSHM(50, "arlan recv pkt offs=%d\n", arlan->rxOffset, u_short);
+			DEBUGSHM(1, "arlan rxFrmType = %d \n", arlan->rxFrmType, u_char);
+			DEBUGSHM(1, KERN_INFO "arlan rx scrambled = %d \n", arlan->scrambled, u_char);
+
+			/* here we do multicast filtering to avoid slow 8-bit memcopy */
+#ifdef ARLAN_MULTICAST
+			if (!(dev->flags & IFF_ALLMULTI) &&
+				!(dev->flags & IFF_PROMISC) &&
+				dev->mc_list)
+			{
+				char hw_dst_addr[6];
+				struct dev_mc_list *dmi = dev->mc_list;
+				int i;
+
+				memcpy_fromio(hw_dst_addr, arlan->ultimateDestAddress, 6);
+				if (hw_dst_addr[0] == 0x01)
+				{
+					if (mdebug)
+						if (hw_dst_addr[1] == 0x00)
+							printk(KERN_ERR "%s mcast 0x0100 \n", dev->name);
+						else if (hw_dst_addr[1] == 0x40)
+							printk(KERN_ERR "%s m/bcast 0x0140 \n", dev->name);
+					while (dmi)
+					{							if (dmi->dmi_addrlen == 6)
+						{
+							if (arlan_debug & ARLAN_DEBUG_HEADER_DUMP)
+								printk(KERN_ERR "%s mcl %2x:%2x:%2x:%2x:%2x:%2x \n", dev->name,
+										 dmi->dmi_addr[0], dmi->dmi_addr[1], dmi->dmi_addr[2],
+										 dmi->dmi_addr[3], dmi->dmi_addr[4], dmi->dmi_addr[5]);
+							for (i = 0; i < 6; i++)
+								if (dmi->dmi_addr[i] != hw_dst_addr[i])
+									break;
+							if (i == 6)
+								break;
+						}
+						else
+							printk(KERN_ERR "%s: invalid multicast address length given.\n", dev->name);
+						dmi = dmi->next;
+					}
+					/* we reach here if multicast filtering is on and packet 
+					 * is multicast and not for receive */
+					goto end_of_interrupt;
+				}
+			}
+#endif				// ARLAN_MULTICAST
+			/* multicast filtering ends here */
+			pkt_len += ARLAN_FAKE_HDR_LEN;
+
+			skb = dev_alloc_skb(pkt_len + 4);
+			if (skb == NULL)
+			{
+				printk(KERN_ERR "%s: Memory squeeze, dropping packet.\n", dev->name);
+				priv->stats.rx_dropped++;
+				break;
+			}
+			skb_reserve(skb, 2);
+			skb->dev = dev;
+			skbtmp = skb_put(skb, pkt_len);
+
+			memcpy_fromio(skbtmp + ARLAN_FAKE_HDR_LEN, ((char __iomem *) arlan) + rxOffset, pkt_len - ARLAN_FAKE_HDR_LEN);
+			memcpy_fromio(skbtmp, arlan->ultimateDestAddress, 6);
+			memcpy_fromio(skbtmp + 6, arlan->rxSrc, 6);
+			WRITESHMB(arlan->rxStatus, 0x00);
+			arlan_command(dev, ARLAN_COMMAND_RX);
+
+			IFDEBUG(ARLAN_DEBUG_HEADER_DUMP)
+			{
+				char immedDestAddress[6];
+				char immedSrcAddress[6];
+				memcpy_fromio(immedDestAddress, arlan->immedDestAddress, 6);
+				memcpy_fromio(immedSrcAddress, arlan->immedSrcAddress, 6);
+
+				printk(KERN_WARNING "%s t %2x:%2x:%2x:%2x:%2x:%2x f %2x:%2x:%2x:%2x:%2x:%2x imd %2x:%2x:%2x:%2x:%2x:%2x ims %2x:%2x:%2x:%2x:%2x:%2x\n", dev->name,
+					(unsigned char) skbtmp[0], (unsigned char) skbtmp[1], (unsigned char) skbtmp[2], (unsigned char) skbtmp[3],
+					(unsigned char) skbtmp[4], (unsigned char) skbtmp[5], (unsigned char) skbtmp[6], (unsigned char) skbtmp[7],
+					(unsigned char) skbtmp[8], (unsigned char) skbtmp[9], (unsigned char) skbtmp[10], (unsigned char) skbtmp[11],
+					immedDestAddress[0], immedDestAddress[1], immedDestAddress[2],
+					immedDestAddress[3], immedDestAddress[4], immedDestAddress[5],
+					immedSrcAddress[0], immedSrcAddress[1], immedSrcAddress[2],
+					immedSrcAddress[3], immedSrcAddress[4], immedSrcAddress[5]);
+			}
+			skb->protocol = eth_type_trans(skb, dev);
+			IFDEBUG(ARLAN_DEBUG_HEADER_DUMP)
+				if (skb->protocol != 0x608 && skb->protocol != 0x8)
+				{
+					for (i = 0; i <= 22; i++)
+						printk("%02x:", (u_char) skbtmp[i + 12]);
+					printk(KERN_ERR "\n");
+					printk(KERN_WARNING "arlan kernel pkt type trans %x \n", skb->protocol);
+				}
+			netif_rx(skb);
+			dev->last_rx = jiffies;
+			priv->stats.rx_packets++;
+			priv->stats.rx_bytes += pkt_len;
+		}
+		break;
+		
+		default:
+			printk(KERN_ERR "arlan intr: received unknown status\n");
+			priv->stats.rx_crc_errors++;
+			break;
+	}
+	ARLAN_DEBUG_EXIT("arlan_rx_interrupt");
+}
+
+static void arlan_process_interrupt(struct net_device *dev)
+{
+	struct arlan_private *priv = netdev_priv(dev);
+	volatile struct arlan_shmem __iomem *arlan = priv->card;
+	u_char rxStatus = READSHMB(arlan->rxStatus);
+	u_char txStatus = READSHMB(arlan->txStatus);
+	u_short rxOffset = READSHMS(arlan->rxOffset);
+	u_short pkt_len = READSHMS(arlan->rxLength);
+	int interrupt_count = 0;
+
+	ARLAN_DEBUG_ENTRY("arlan_process_interrupt");
+
+	if (test_and_set_bit(0, (void *) &priv->interrupt_processing_active))
+	{
+		if (arlan_debug & ARLAN_DEBUG_CHAIN_LOCKS)
+			printk(KERN_ERR "interrupt chain reentering \n");
+		goto end_int_process;
+	}
+	while ((rxStatus || txStatus || priv->interrupt_ack_requested)
+			&& (interrupt_count < 5))
+	{
+		if (rxStatus)
+			priv->last_rx_int_ack_time = jiffies;
+
+		arlan_command(dev, ARLAN_COMMAND_INT_ACK);
+		arlan_command(dev, ARLAN_COMMAND_INT_ENABLE);
+		
+		IFDEBUG(ARLAN_DEBUG_INTERRUPT)
+			printk(KERN_ERR "%s:  got IRQ rx %x tx %x comm %x rxOff %x rxLen %x \n",
+					dev->name, rxStatus, txStatus, READSHMB(arlan->commandByte),
+					rxOffset, pkt_len);
+
+		if (rxStatus == 0 && txStatus == 0)
+		{
+			if (priv->irq_test_done)
+			{
+				if (!registrationBad(dev))
+					IFDEBUG(ARLAN_DEBUG_INTERRUPT) printk(KERN_ERR "%s unknown interrupt(nop? regLost ?) reason tx %d rx %d ",
+										    dev->name, txStatus, rxStatus);
+			} else {
+				IFDEBUG(ARLAN_DEBUG_INTERRUPT)
+					printk(KERN_INFO "%s irq $%d test OK \n", dev->name, dev->irq);
+
+			}
+			priv->interrupt_ack_requested = 0;
+			goto ends;
+		}
+		if (txStatus != 0)
+		{
+			WRITESHMB(arlan->txStatus, 0x00);
+			arlan_tx_done_interrupt(dev, txStatus);
+			goto ends;
+		}
+		if (rxStatus == 1 || rxStatus == 2)
+		{		/* a packet waiting */
+			arlan_rx_interrupt(dev, rxStatus, rxOffset, pkt_len);
+			goto ends;
+		}
+		if (rxStatus > 2 && rxStatus < 0xff)
+		{
+			WRITESHMB(arlan->rxStatus, 0x00);
+			printk(KERN_ERR "%s unknown rxStatus reason tx %d rx %d ",
+				dev->name, txStatus, rxStatus);
+			goto ends;
+		}
+		if (rxStatus == 0xff)
+		{
+			WRITESHMB(arlan->rxStatus, 0x00);
+			arlan_command(dev, ARLAN_COMMAND_RX);
+			if (registrationBad(dev))
+				netif_device_detach(dev);
+			if (!registrationBad(dev))
+			{
+				priv->registrationLastSeen = jiffies;
+				if (!netif_queue_stopped(dev) && !priv->under_reset && !priv->under_config)
+					netif_wake_queue (dev);
+			}
+			goto ends;
+		}
+ends:
+
+		arlan_command_process(dev);
+
+		rxStatus = READSHMB(arlan->rxStatus);
+		txStatus = READSHMB(arlan->txStatus);
+		rxOffset = READSHMS(arlan->rxOffset);
+		pkt_len = READSHMS(arlan->rxLength);
+
+
+		priv->irq_test_done = 1;
+
+		interrupt_count++;
+	}
+	priv->interrupt_processing_active = 0;
+
+end_int_process:
+	arlan_command_process(dev);
+
+	ARLAN_DEBUG_EXIT("arlan_process_interrupt");
+	return;
+}
+
+static irqreturn_t arlan_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+	struct net_device *dev = dev_id;
+	struct arlan_private *priv = netdev_priv(dev);
+	volatile struct arlan_shmem __iomem *arlan = priv->card;
+	u_char rxStatus = READSHMB(arlan->rxStatus);
+	u_char txStatus = READSHMB(arlan->txStatus);
+
+	ARLAN_DEBUG_ENTRY("arlan_interrupt");
+
+
+	if (!rxStatus && !txStatus)
+		priv->interrupt_ack_requested++;
+
+	arlan_process_interrupt(dev);
+	
+	priv->irq_test_done = 1;
+
+	ARLAN_DEBUG_EXIT("arlan_interrupt");
+	return IRQ_HANDLED;
+
+}
+
+
+static int arlan_close(struct net_device *dev)
+{
+	struct arlan_private *priv = netdev_priv(dev);
+
+	ARLAN_DEBUG_ENTRY("arlan_close");
+
+	del_timer_sync(&priv->timer);
+
+	arlan_command(dev, ARLAN_COMMAND_POWERDOWN);
+
+	IFDEBUG(ARLAN_DEBUG_STARTUP)
+		printk(KERN_NOTICE "%s: Closing device\n", dev->name);
+
+	netif_stop_queue(dev);
+	free_irq(dev->irq, dev);
+
+	ARLAN_DEBUG_EXIT("arlan_close");
+	return 0;
+}
+
+#ifdef ARLAN_DEBUGGING
+static long alignLong(volatile u_char * ptr)
+{
+	long ret;
+	memcpy_fromio(&ret, (void *) ptr, 4);
+	return ret;
+}
+#endif
+
+/*
+ * Get the current statistics.
+ * This may be called with the card open or closed.
+ */
+
+static struct net_device_stats *arlan_statistics(struct net_device *dev)
+{
+	struct arlan_private *priv = netdev_priv(dev);
+	volatile struct arlan_shmem __iomem *arlan = priv->card;
+
+
+	ARLAN_DEBUG_ENTRY("arlan_statistics");
+
+	/* Update the statistics from the device registers. */
+
+	READSHM(priv->stats.collisions, arlan->numReTransmissions, u_int);
+	READSHM(priv->stats.rx_crc_errors, arlan->numCRCErrors, u_int);
+	READSHM(priv->stats.rx_dropped, arlan->numFramesDiscarded, u_int);
+	READSHM(priv->stats.rx_fifo_errors, arlan->numRXBufferOverflows, u_int);
+	READSHM(priv->stats.rx_frame_errors, arlan->numReceiveFramesLost, u_int);
+	READSHM(priv->stats.rx_over_errors, arlan->numRXOverruns, u_int);
+	READSHM(priv->stats.rx_packets, arlan->numDatagramsReceived, u_int);
+	READSHM(priv->stats.tx_aborted_errors, arlan->numAbortErrors, u_int);
+	READSHM(priv->stats.tx_carrier_errors, arlan->numStatusTimeouts, u_int);
+	READSHM(priv->stats.tx_dropped, arlan->numDatagramsDiscarded, u_int);
+	READSHM(priv->stats.tx_fifo_errors, arlan->numTXUnderruns, u_int);
+	READSHM(priv->stats.tx_packets, arlan->numDatagramsTransmitted, u_int);
+	READSHM(priv->stats.tx_window_errors, arlan->numHoldOffs, u_int);
+
+	ARLAN_DEBUG_EXIT("arlan_statistics");
+
+	return &priv->stats;
+}
+
+
+static void arlan_set_multicast(struct net_device *dev)
+{
+	struct arlan_private *priv = netdev_priv(dev);
+	volatile struct arlan_shmem __iomem *arlan = priv->card;
+	struct arlan_conf_stru *conf = priv->Conf;
+	int board_conf_needed = 0;
+
+
+	ARLAN_DEBUG_ENTRY("arlan_set_multicast");
+
+	if (dev->flags & IFF_PROMISC)
+	{
+		unsigned char recMode;
+		READSHM(recMode, arlan->receiveMode, u_char);
+		conf->receiveMode = (ARLAN_RCV_PROMISC | ARLAN_RCV_CONTROL);
+		if (conf->receiveMode != recMode)
+			board_conf_needed = 1;
+	}
+	else
+	{
+		/* turn off promiscuous mode  */
+		unsigned char recMode;
+		READSHM(recMode, arlan->receiveMode, u_char);
+		conf->receiveMode = ARLAN_RCV_CLEAN | ARLAN_RCV_CONTROL;
+		if (conf->receiveMode != recMode)
+			board_conf_needed = 1;
+	}
+	if (board_conf_needed)
+		arlan_command(dev, ARLAN_COMMAND_CONF);
+
+	ARLAN_DEBUG_EXIT("arlan_set_multicast");
+}
+
+
+struct net_device * __init arlan_probe(int unit)
+{
+	struct net_device *dev;
+	int err;
+	int m;
+
+	ARLAN_DEBUG_ENTRY("arlan_probe");
+
+	if (arlans_found == MAX_ARLANS)
+		return ERR_PTR(-ENODEV);
+
+	/* 
+	 * Reserve space for local data and a copy of the shared memory
+	 * that is used by the /proc interface.
+	 */
+	dev = alloc_etherdev(sizeof(struct arlan_private)
+			     + sizeof(struct arlan_shmem));
+	if (!dev)
+		return ERR_PTR(-ENOMEM);
+
+	SET_MODULE_OWNER(dev);
+
+	if (unit >= 0) {
+		sprintf(dev->name, "eth%d", unit);
+		netdev_boot_setup_check(dev);
+		
+		if (dev->mem_start) {
+			if (arlan_probe_here(dev, dev->mem_start) == 0)
+				goto found;
+			goto not_found;
+		}
+			
+	}
+
+
+	for (m = (int)phys_to_virt(lastFoundAt) + ARLAN_SHMEM_SIZE; 
+	     m <= (int)phys_to_virt(0xDE000); 
+	     m += ARLAN_SHMEM_SIZE)
+	{
+		if (arlan_probe_here(dev, m) == 0)
+		{
+			lastFoundAt = (int)virt_to_phys((void*)m);
+			goto found;
+		}
+	}
+
+	if (lastFoundAt == 0xbe000)
+		printk(KERN_ERR "arlan: No Arlan devices found \n");
+
+ not_found:
+	free_netdev(dev);
+	return ERR_PTR(-ENODEV);
+
+ found:
+	err = arlan_setup_device(dev, arlans_found);
+	if (err)
+		dev = ERR_PTR(err);
+	else if (!arlans_found++)
+		printk(KERN_INFO "Arlan driver %s\n", arlan_version);
+
+	return dev;
+}
+
+#ifdef  MODULE
+int init_module(void)
+{
+	int i = 0;
+
+	ARLAN_DEBUG_ENTRY("init_module");
+
+	if (channelSet != channelSetUNKNOWN || channelNumber != channelNumberUNKNOWN || systemId != systemIdUNKNOWN)
+		return -EINVAL;
+
+	for (i = 0; i < MAX_ARLANS; i++) {
+		struct net_device *dev = arlan_probe(i);
+
+		if (IS_ERR(dev)) 
+			return PTR_ERR(dev);
+	}
+	init_arlan_proc();
+	printk(KERN_INFO "Arlan driver %s\n", arlan_version);
+	ARLAN_DEBUG_EXIT("init_module");
+	return 0;
+}
+
+
+void cleanup_module(void)
+{
+	int i = 0;
+	struct net_device *dev;
+
+	ARLAN_DEBUG_ENTRY("cleanup_module");
+
+	IFDEBUG(ARLAN_DEBUG_SHUTDOWN)
+		printk(KERN_INFO "arlan: unloading module\n");
+
+	cleanup_arlan_proc();
+
+	for (i = 0; i < MAX_ARLANS; i++)
+	{
+		dev = arlan_device[i];
+		if (dev) {
+			arlan_command(dev, ARLAN_COMMAND_POWERDOWN );
+
+			unregister_netdev(dev);
+			release_mem_region(virt_to_phys((void *) dev->mem_start), 
+					   ARLAN_SHMEM_SIZE);
+			free_netdev(dev);
+			arlan_device[i] = NULL;
+		}
+	}
+
+	ARLAN_DEBUG_EXIT("cleanup_module");
+}
+
+
+#endif
+MODULE_LICENSE("GPL");