patch-2.2.11 linux/drivers/net/arlan.c
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- Lines: 2081
- Date:
Mon Aug 9 12:04:39 1999
- Orig file:
v2.2.10/linux/drivers/net/arlan.c
- Orig date:
Wed Dec 31 16:00:00 1969
diff -u --recursive --new-file v2.2.10/linux/drivers/net/arlan.c linux/drivers/net/arlan.c
@@ -0,0 +1,2080 @@
+/*
+ * Copyright (C) 1997 Cullen Jennings
+ * Copyright (C) 1998 Elmer.Joandi@ut.ee, +37-255-13500
+ * Gnu Public License applies
+ * This module provides support for the Arlan 655 card made by Aironet
+ */
+
+
+#include <linux/config.h>
+#include "arlan.h"
+
+static const char *arlan_version = "C.Jennigs 97 & Elmer.Joandi@ut.ee Oct'98, http://www.ylenurme.ee/~elmer/655/";
+
+struct device *arlan_device[MAX_ARLANS];
+int last_arlan = 0;
+
+static int SID = SIDUNKNOWN;
+static int radioNodeId = radioNodeIdUNKNOWN;
+static char encryptionKey[12] = {'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h'};
+static char *siteName = siteNameUNKNOWN;
+static int irq = irqUNKNOWN;
+static int mem = memUNKNOWN;
+static int arlan_debug = debugUNKNOWN;
+static int probe = probeUNKNOWN;
+static int numDevices = numDevicesUNKNOWN;
+static int testMemory = testMemoryUNKNOWN;
+static int spreadingCode = spreadingCodeUNKNOWN;
+static int channelNumber = channelNumberUNKNOWN;
+static int channelSet = channelSetUNKNOWN;
+static int systemId = systemIdUNKNOWN;
+static int registrationMode = registrationModeUNKNOWN;
+static int txScrambled = 1;
+static int keyStart = 0;
+static int mdebug = 0;
+static int tx_delay_ms = 0;
+static int retries = 5;
+static int async = 1;
+static int tx_queue_len = 1;
+static int arlan_entry_debug = 0;
+static int arlan_exit_debug = 0;
+static int arlan_entry_and_exit_debug = 0;
+static int arlan_EEPROM_bad = 0;
+
+#if LINUX_VERSION_CODE > 0x20100
+MODULE_PARM(irq, "i");
+MODULE_PARM(mem, "i");
+MODULE_PARM(probe, "i");
+MODULE_PARM(arlan_debug, "i");
+MODULE_PARM(numDevices, "i");
+MODULE_PARM(testMemory, "i");
+MODULE_PARM(spreadingCode, "i");
+MODULE_PARM(channelNumber, "i");
+MODULE_PARM(channelSet, "i");
+MODULE_PARM(systemId, "i");
+MODULE_PARM(registrationMode, "i");
+MODULE_PARM(radioNodeId, "i");
+MODULE_PARM(SID, "i");
+MODULE_PARM(txScrambled, "i");
+MODULE_PARM(keyStart, "i");
+MODULE_PARM(mdebug, "i");
+MODULE_PARM(tx_delay_ms, "i");
+MODULE_PARM(retries, "i");
+MODULE_PARM(async, "i");
+MODULE_PARM(tx_queue_len, "i");
+MODULE_PARM(arlan_entry_debug, "i");
+MODULE_PARM(arlan_exit_debug, "i");
+MODULE_PARM(arlan_entry_and_exit_debug, "i");
+MODULE_PARM(arlan_EEPROM_bad, "i");
+
+EXPORT_SYMBOL(arlan_device);
+EXPORT_SYMBOL(last_arlan);
+
+
+// #warning kernel 2.1.110 tested
+#define myATOMIC_INIT(a,b) atomic_set(&(a),b)
+#define __initfunctio(a) __initfunc(a)
+
+#else
+#define test_and_set_bit set_bit
+#define __initfunctio(a) a
+#if LINUX_VERSION_CODE != 0x20024
+ // #warning kernel 2.0.36 tested
+#endif
+#define myATOMIC_INIT(a,b) a = b;
+
+#endif
+
+struct arlan_conf_stru arlan_conf[MAX_ARLANS];
+int arlans_found = 0;
+
+static int arlan_probe_here(struct device *dev, int ioaddr);
+static int arlan_open(struct device *dev);
+static int arlan_tx(struct sk_buff *skb, struct device *dev);
+static void arlan_interrupt(int irq, void *dev_id, struct pt_regs *regs);
+static int arlan_close(struct device *dev);
+static struct enet_statistics *
+ arlan_statistics (struct device *dev);
+static void arlan_set_multicast (struct device *dev);
+static int arlan_hw_tx (struct device* dev, char *buf, int length );
+static int arlan_hw_config (struct device * dev);
+static void arlan_tx_done_interrupt (struct device * dev, int status);
+static void arlan_rx_interrupt (struct device * dev, u_char rxStatus, u_short, u_short);
+static void arlan_process_interrupt (struct device * dev);
+static int arlan_command(struct device * dev, int command);
+
+EXPORT_SYMBOL(arlan_command);
+
+extern inline long long arlan_time(void)
+{
+ struct timeval timev;
+ do_gettimeofday(&timev);
+ return ((long long) timev.tv_sec * 1000000 + timev.tv_usec);
+};
+
+#ifdef ARLAN_ENTRY_EXIT_DEBUGING
+#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);
+
+
+#define ARLAN_COMMAND_LOCK(dev) \
+ if (atomic_dec_and_test(&((struct arlan_private * )dev->priv)->card_users))\
+ arlan_wait_command_complete_short(dev,__LINE__);
+#define ARLAN_COMMAND_UNLOCK(dev) \
+ atomic_inc(&((struct arlan_private * )dev->priv)->card_users);
+
+
+#define ARLAN_COMMAND_INC(dev) \
+ {((struct arlan_private *) dev->priv)->under_command++;}
+#define ARLAN_COMMAND_ZERO(dev) \
+ {((struct arlan_private *) dev->priv)->under_command =0;}
+#define ARLAN_UNDER_COMMAND(dev)\
+ (((struct arlan_private *) dev->priv)->under_command)
+
+#define ARLAN_COMMAND_START(dev) ARLAN_COMMAND_INC(dev)
+#define ARLAN_COMMAND_END(dev) ARLAN_COMMAND_ZERO(dev)
+#define ARLAN_TOGGLE_START(dev)\
+ {((struct arlan_private *) dev->priv)->under_toggle++;}
+#define ARLAN_TOGGLE_END(dev)\
+ {((struct arlan_private *) dev->priv)->under_toggle=0;}
+#define ARLAN_UNDER_TOGGLE(dev)\
+ (((struct arlan_private *) dev->priv)->under_toggle)
+
+
+
+extern inline int arlan_drop_tx(struct device *dev)
+{
+ struct arlan_private *priv = ((struct arlan_private *) dev->priv);
+
+ 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->txOffset = 0;
+ priv->bad = 0;
+ if (!priv->under_reset && !priv->under_config)
+ {
+ dev->tbusy = 0;
+ mark_bh(NET_BH);
+ }
+ }
+ return 1;
+};
+
+
+static int arlan_command(struct device *dev, int command_p)
+{
+
+ volatile struct arlan_shmem *arlan = ((struct arlan_private *) dev->priv)->card;
+ struct arlan_conf_stru *conf = ((struct arlan_private *) dev->priv)->Conf;
+ struct arlan_private *priv = (struct arlan_private *) dev->priv;
+ int udelayed = 0;
+ int i = 0;
+ long long time_mks = arlan_time();
+
+ 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 lock %x commandByte %x waiting %x incoming %x \n",
+ jiffies, priv->command_lock, READSHMB(arlan->commandByte),
+ priv->waiting_command_mask, command_p);
+
+ priv->waiting_command_mask |= command_p;
+
+ if (priv->waiting_command_mask & ARLAN_COMMAND_RESET)
+ if (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 */
+
+ if (test_and_set_bit(0, (void *) &priv->command_lock))
+ {
+ if (arlan_debug & ARLAN_DEBUG_CHAIN_LOCKS)
+ printk(KERN_DEBUG "arlan_command: entered when command locked \n");
+ goto command_busy_end;
+ }
+ /* 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;
+ dev->start = 0;
+ }
+ if (priv->waiting_command_mask & ARLAN_COMMAND_CONF)
+ {
+ priv->under_config = 1;
+ dev->start = 0;
+ }
+
+ /* 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)
+ {
+ 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);
+ };
+ 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->numResets++;
+ 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);
+ }
+ dev->start = 0;
+ 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->card_polling_interval = HZ / 10;
+ priv->tx_command_given = 0;
+ priv->under_config = 0;
+ if (dev->tbusy || !dev->start)
+ {
+ dev->tbusy = 0;
+ dev->start = 1;
+ mark_bh(NET_BH);
+ };
+ }
+ 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((void *) 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;
+ priv->last_rx_time = arlan_time();
+ 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_TX)
+ {
+ if (!test_and_set_bit(0, (void *) &priv->tx_command_given))
+ {
+ if ((time_mks - priv->last_tx_time > conf->rx_tweak1) ||
+ (time_mks - priv->last_rx_int_ack_time < conf->rx_tweak2))
+ {
+ setInterruptEnable(dev);
+ memset_io((void *) arlan->commandParameter, 0, 0xf);
+ WRITESHMB(arlan->commandByte, ARLAN_COM_TX_ENABLE | ARLAN_COM_INT);
+ memcpy_toio((void *) arlan->commandParameter, &TXLAST(dev), 14);
+// for ( i=1 ; i < 15 ; i++) printk("%02x:",READSHMB(arlan->commandParameter[i]));
+ priv->last_command_was_rx = 0;
+ priv->tx_last_sent = jiffies;
+ arlan_interrupt_lancpu(dev);
+ priv->last_tx_time = arlan_time();
+ 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 %x \n", priv->waiting_command_mask);
+
+ priv->command_lock = 0;
+ ARLAN_DEBUG_EXIT("arlan_command");
+ priv->last_command_buff_free_time = jiffies;
+ return 0;
+
+card_busy_end:
+ if (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);
+ priv->command_lock = 0;
+ ARLAN_DEBUG_EXIT("arlan_command");
+ return 1;
+
+bad_end:
+ printk(KERN_ERR "%s arlan_command bad end \n", dev->name);
+
+ priv->command_lock = 0;
+ ARLAN_DEBUG_EXIT("arlan_command");
+
+ return -1;
+
+command_busy_end:
+ if (arlan_debug & ARLAN_DEBUG_CARD_STATE)
+ printk(KERN_ERR "%s arlan_command command busy end \n", dev->name);
+ ARLAN_DEBUG_EXIT("arlan_command");
+ return 2;
+
+};
+
+extern inline void arlan_command_process(struct device *dev)
+{
+ struct arlan_private *priv = ((struct arlan_private *) dev->priv);
+
+ 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 wont repeat trying */ ;
+ if (priv->card_polling_interval > 1)
+ break;
+ times++;
+ }
+}
+
+
+extern inline void arlan_retransmit_now(struct device *dev)
+{
+ struct arlan_private *priv = ((struct arlan_private *) dev->priv);
+
+
+ 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");
+ priv->txOffset = 0;
+ dev->tbusy = 0;
+ mark_bh(NET_BH);
+ return;
+
+ }
+ arlan_command(dev, ARLAN_COMMAND_TX);
+
+ priv->nof_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 device *dev = (struct device *) data;
+ struct arlan_private *priv = (struct arlan_private *) dev->priv;
+
+ int lostTime = ((int) (jiffies - priv->registrationLastSeen)) * 1000 / HZ;
+ int bh_mark_needed = 0;
+ int next_tick = 1;
+
+
+ priv->timer_chain_active = 1;
+
+
+ if (registrationBad(dev))
+ {
+ //debug=100;
+ 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 %d milliseconds\n", dev->name,
+ ((int) (jiffies - priv->registrationLastSeen) * 1000) / HZ);
+ }
+ priv->registrationLastSeen = jiffies;
+ priv->registrationLostCount = 0;
+ priv->reRegisterExp = 1;
+ if (dev->start == 0)
+ {
+ dev->start = 1;
+ mark_bh(NET_BH);
+ }
+ }
+
+
+ if (!registrationBad(dev) && priv->ReTransmitRequested)
+ {
+ IFDEBUG(ARLAN_DEBUG_TX_CHAIN)
+ printk(KERN_ERR "Retranmit from timer \n");
+ priv->ReTransmitRequested = 0;
+ arlan_retransmit_now(dev);
+ }
+ if (!registrationBad(dev) &&
+ priv->tx_done_delayed < jiffies &&
+ 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))
+ {
+ priv->txOffset = 0;
+ dev->tbusy = 0;
+ mark_bh(NET_BH);
+ }
+ priv->tx_done_delayed = 0;
+ bh_mark_needed = 1;
+ }
+ if (bh_mark_needed)
+ {
+ priv->txOffset = 0;
+ dev->tbusy = 0;
+ mark_bh(NET_BH);
+ }
+ arlan_process_interrupt(dev);
+
+ if (next_tick < priv->card_polling_interval)
+ next_tick = priv->card_polling_interval;
+
+ priv->timer_chain_active = 0;
+ priv->timer.expires = jiffies + next_tick;
+
+ add_timer(&priv->timer);
+}
+
+
+
+
+static void arlan_print_registers(struct device *dev, int line)
+{
+ volatile struct arlan_shmem *arlan = ((struct arlan_private *) dev->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");
+}
+
+
+static int arlan_hw_tx(struct device *dev, char *buf, int length)
+{
+ int i;
+
+ struct arlan_private *priv = (struct arlan_private *) dev->priv;
+ volatile struct arlan_shmem *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 - (((int) arlan->txBuffer) - ((int) arlan))) / 64) + 1) * 64;
+ if (TXTAIL(dev).offset)
+ tailStarts = 0x800 - (((TXTAIL(dev).offset - (((int) arlan->txBuffer) - ((int) arlan))) / 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 =
+ (((int) arlan->txBuffer) - ((int) arlan));
+ 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 *) 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 =
+ (((int) arlan->txBuffer) - ((int) arlan)) + 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 *) arlan + TXTAIL(dev).offset), buf + ARLAN_FAKE_HDR_LEN, TXTAIL(dev).length);
+ }
+ else
+ {
+ dev->tbusy = 1;
+ return -1;
+ IFDEBUG(ARLAN_DEBUG_TX_CHAIN)
+ printk(KERN_ERR "TX TAIL & HEAD full, return, tailStart %d headEnd %d\n", tailStarts, headEnds);
+ }
+ priv->out_bytes += length;
+ priv->out_bytes10 += length;
+ if (conf->measure_rate < 1)
+ conf->measure_rate = 1;
+ if (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 (jiffies - priv->out_time10 > conf->measure_rate * HZ * 10)
+ {
+ 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)
+ {
+ dev->tbusy = 1;
+ return 0;
+ }
+ else
+ dev->tbusy = 0;
+
+
+ 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->last_command_was_rx = 0;
+ priv->tx_last_sent = jiffies;
+ priv->nof_tx++;
+
+ 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 device *dev)
+{
+ volatile struct arlan_shmem *arlan = ((struct arlan_private *) dev->priv)->card;
+ struct arlan_conf_stru *conf = ((struct arlan_private *) dev->priv)->Conf;
+ struct arlan_private *priv = (struct arlan_private *) dev->priv;
+
+ 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 device *dev)
+{
+ u_char tlx415;
+ volatile struct arlan_shmem *arlan = ((struct arlan_private *) dev->priv)->card;
+ struct arlan_conf_stru *conf = ((struct arlan_private *) dev->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->async = async;
+ 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.
+ */
+
+__initfunctio(static int arlan_check_fingerprint(int memaddr))
+{
+ static char probeText[] = "TELESYSTEM SLW INC. ARLAN \0";
+ char tempBuf[49];
+ volatile struct arlan_shmem *arlan = (struct arlan_shmem *) memaddr;
+
+ ARLAN_DEBUG_ENTRY("arlan_check_fingerprint");
+ memcpy_fromio(tempBuf, arlan->textRegion, 29);
+ tempBuf[30] = 0;
+
+ /* check for card at this address */
+ if (0 != strncmp(tempBuf, probeText, 29))
+ return -ENODEV;
+
+// printk(KERN_INFO "arlan found at 0x%x \n",memaddr);
+ ARLAN_DEBUG_EXIT("arlan_check_fingerprint");
+
+ return 0;
+
+
+}
+
+__initfunctio(int arlan_probe_everywhere(struct device *dev))
+{
+ int m;
+ int probed = 0;
+ int found = 0;
+
+ ARLAN_DEBUG_ENTRY("arlan_probe_everywhere");
+ if (mem != 0 && numDevices == 1) /* Check a single specified location. */
+ {
+ if (arlan_probe_here(dev, mem) == 0)
+ return 0;
+ else
+ return -ENODEV;
+ }
+ for (m = lastFoundAt + 0x2000; m <= 0xDE000; m += 0x2000)
+ {
+ if (arlan_probe_here(dev, m) == 0)
+ {
+ found++;
+ lastFoundAt = m;
+ break;
+ }
+ probed++;
+ }
+ if (found == 0 && probed != 0)
+ {
+ if (lastFoundAt == 0xbe000)
+ printk(KERN_ERR "arlan: No Arlan devices found \n");
+ return ENODEV;
+ }
+ else
+ return 0;
+
+ ARLAN_DEBUG_EXIT("arlan_probe_everywhere");
+
+ return ENODEV;
+}
+
+__initfunctio(int arlan_find_devices(void))
+{
+ int m;
+ int found = 0;
+
+ ARLAN_DEBUG_ENTRY("arlan_find_devices");
+ if (mem != 0 && numDevices == 1) /* Check a single specified location. */
+ return 1;
+ for (m = 0xc000; m <= 0xDE000; m += 0x2000)
+ {
+ if (arlan_check_fingerprint(m) == 0)
+ found++;
+ }
+ ARLAN_DEBUG_EXIT("arlan_find_devices");
+
+ return found;
+}
+
+
+static int arlan_change_mtu(struct device *dev, int new_mtu)
+{
+ struct arlan_conf_stru *conf = ((struct arlan_private *) dev->priv)->Conf;
+
+ ARLAN_DEBUG_ENTRY("arlan_change_mtu");
+ if ((new_mtu < 68) || (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 device *dev, void *p)
+{
+ struct sockaddr *addr = p;
+
+
+ ARLAN_DEBUG_ENTRY("arlan_mac_addr");
+ return -EINVAL;
+
+ if (dev->start)
+ return -EBUSY;
+ memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
+
+ ARLAN_DEBUG_EXIT("arlan_mac_addr");
+ return 0;
+}
+
+
+
+
+__initfunctio(static int
+ arlan_allocate_device(int num, struct device *devs))
+{
+
+ struct device *dev;
+
+ ARLAN_DEBUG_ENTRY("arlan_allocate_device");
+
+ if (!devs)
+ dev = init_etherdev(0, sizeof(struct arlan_private));
+ else
+ {
+ dev = devs;
+ dev->priv = kmalloc(sizeof(struct arlan_private), GFP_KERNEL);
+ };
+
+ if (dev == NULL || dev->priv == NULL)
+ {
+ printk(KERN_CRIT "init_etherdev failed ");
+ return 0;
+ }
+ ((struct arlan_private *) dev->priv)->conf =
+ kmalloc(sizeof(struct arlan_shmem), GFP_KERNEL);
+
+ if (dev == NULL || dev->priv == NULL ||
+ ((struct arlan_private *) dev->priv)->conf == NULL)
+ {
+ return 0;
+ printk(KERN_CRIT " No memory at arlan_allocate_device \n");
+ }
+ /* Fill in the 'dev' fields. */
+ dev->base_addr = 0;
+ dev->mem_start = 0;
+ dev->mem_end = 0;
+ dev->mtu = 1500;
+ dev->flags = 0; /* IFF_BROADCAST & IFF_MULTICAST & IFF_PROMISC; */
+ dev->irq = 0;
+ dev->dma = 0;
+ dev->tx_queue_len = tx_queue_len;
+ ether_setup(dev);
+ 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;
+ ((struct arlan_private *) dev->priv)->irq_test_done = 0;
+ arlan_device[num] = dev;
+ ((struct arlan_private *) arlan_device[num]->priv)->Conf = &(arlan_conf[num]);
+
+ ((struct arlan_private *) dev->priv)->Conf->pre_Command_Wait = 40;
+ ((struct arlan_private *) dev->priv)->Conf->rx_tweak1 = 30;
+ ((struct arlan_private *) dev->priv)->Conf->rx_tweak2 = 0;
+
+ ARLAN_DEBUG_EXIT("arlan_allocate_device");
+ return (int) dev;
+}
+
+
+__initfunctio(int arlan_probe_here(struct device *dev, int memaddr))
+{
+ volatile struct arlan_shmem *arlan;
+
+ ARLAN_DEBUG_ENTRY("arlan_probe_here");
+
+ if (arlan_check_fingerprint(memaddr))
+ return -ENODEV;
+
+ printk(KERN_NOTICE "%s: Arlan found at %#5x, \n ", dev->name, memaddr);
+
+ if (!arlan_allocate_device(arlans_found, dev))
+ return -1;
+
+ ((struct arlan_private *) dev->priv)->card = (struct arlan_shmem *) memaddr;
+ arlan = (void *) memaddr;
+
+ dev->mem_start = memaddr;
+ dev->mem_end = memaddr + 0x1FFF;
+
+ if (dev->irq < 2)
+ {
+ READSHM(dev->irq, arlan->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 device *dev)
+{
+ struct arlan_private *priv = (struct arlan_private *) dev->priv;
+ volatile struct arlan_shmem *arlan = priv->card;
+ int ret = 0;
+
+ ARLAN_DEBUG_ENTRY("arlan_open");
+
+ if (dev->mem_start == 0)
+ ret = arlan_probe_everywhere(dev);
+ if (ret != 0)
+ return ret;
+
+ arlan = ((struct arlan_private *) dev->priv)->card;
+
+ if (request_irq(dev->irq, &arlan_interrupt, 0, dev->name, dev))
+ {
+ printk(KERN_ERR "%s: unable to get IRQ %d .\n",
+ dev->name, dev->irq);
+ return -EAGAIN;
+ }
+ arlan_command(dev, ARLAN_COMMAND_POWERUP | ARLAN_COMMAND_LONG_WAIT_NOW);
+
+ priv->bad = 0;
+ priv->lastReset = 0;
+ priv->reset = 0;
+ priv->open_time = jiffies;
+ memcpy_fromio(dev->dev_addr, arlan->lanCardNodeId, 6);
+ memset(dev->broadcast, 0xff, 6);
+ dev->tbusy = 1;
+ priv->txOffset = 0;
+ dev->interrupt = 0;
+ dev->start = 1;
+ dev->tx_queue_len = tx_queue_len;
+ init_timer(&priv->timer);
+ priv->timer.expires = jiffies + HZ / 10;
+ priv->timer.data = (unsigned long) dev;
+ priv->timer.function = &arlan_registration_timer; /* timer handler */
+ priv->interrupt_processing_active = 0;
+ priv->command_lock = 0;
+ add_timer(&priv->timer);
+
+ priv->card_lock = MUTEX;
+ myATOMIC_INIT(priv->card_users, 1); /* damn 2.0.33 */
+ priv->registrationLostCount = 0;
+ priv->registrationLastSeen = jiffies;
+ priv->txLast = 0;
+ priv->tx_command_given = 0;
+
+ priv->reRegisterExp = 1;
+ priv->nof_tx = 0;
+ priv->nof_tx_ack = 0;
+ priv->last_command_was_rx = 0;
+ priv->tx_last_sent = jiffies - 1;
+ priv->tx_last_cleared = jiffies;
+ priv->Conf->writeEEPROM = 0;
+ priv->Conf->registrationInterrupts = 1;
+
+ dev->tbusy = 0;
+
+ MOD_INC_USE_COUNT;
+#ifdef CONFIG_PROC_FS
+#ifndef MODULE
+ if (arlan_device[0])
+ init_arlan_proc();
+#endif
+#endif
+ ARLAN_DEBUG_EXIT("arlan_open");
+ return 0;
+}
+
+
+
+
+static int arlan_tx(struct sk_buff *skb, struct device *dev)
+{
+ struct arlan_private *priv = ((struct arlan_private *) dev->priv);
+ struct arlan_conf_stru *conf = ((struct arlan_private *) dev->priv)->Conf;
+
+ ARLAN_DEBUG_ENTRY("arlan_tx");
+
+ 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 * 1000) / HZ) * 2 > conf->txTimeoutMs)
+ arlan_command(dev, ARLAN_COMMAND_TX_ABORT);
+
+ if (((tickssofar * 1000) / HZ) < conf->txTimeoutMs)
+ {
+ // up(&priv->card_lock);
+ goto bad_end;
+ }
+ 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;
+ goto bad_end;
+
+ }
+ /*
+ * 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(KERN_ERR "%s: Transmitter access conflict.\n",
+ dev->name);
+ }
+ else
+ {
+ short length;
+ unsigned char *buf;
+
+ /*
+ * If some higher layer thinks we've missed an tx-done interrupt
+ * we are passed NULL. Caution: dev_tint() handles the cli()/sti()
+ * itself.
+ */
+
+ length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
+ buf = skb->data;
+
+ if (priv->txOffset + length + 0x12 > 0x800)
+ printk(KERN_ERR "TX RING overflow \n");
+
+ if (arlan_hw_tx(dev, buf, length) == -1)
+ goto bad_end;
+
+ dev->trans_start = jiffies;
+ }
+ dev_kfree_skb(skb);
+
+ arlan_process_interrupt(dev);
+ priv->tx_chain_active = 0;
+ ARLAN_DEBUG_EXIT("arlan_tx");
+ return 0;
+
+bad_end:
+ arlan_process_interrupt(dev);
+ priv->tx_chain_active = 0;
+ ARLAN_DEBUG_EXIT("arlan_tx");
+ return 1;
+}
+
+
+extern inline int DoNotReTransmitCrap(struct device *dev)
+{
+ struct arlan_private *priv = ((struct arlan_private *) dev->priv);
+
+ if (TXLAST(dev).length < priv->Conf->ReTransmitPacketMaxSize)
+ return 1;
+ return 0;
+
+}
+
+extern inline int DoNotWaitReTransmitCrap(struct device *dev)
+{
+ struct arlan_private *priv = ((struct arlan_private *) dev->priv);
+
+ if (TXLAST(dev).length < priv->Conf->waitReTransmitPacketMaxSize)
+ return 1;
+ return 0;
+}
+
+extern inline void arlan_queue_retransmit(struct device *dev)
+{
+ struct arlan_private *priv = ((struct arlan_private *) dev->priv);
+
+ ARLAN_DEBUG_ENTRY("arlan_queue_retransmit");
+
+ if (DoNotWaitReTransmitCrap(dev))
+ {
+ arlan_drop_tx(dev);
+ } else
+ priv->ReTransmitRequested++;
+
+ ARLAN_DEBUG_EXIT("arlan_queue_retransmit");
+};
+
+extern inline void RetryOrFail(struct device *dev)
+{
+ struct arlan_private *priv = ((struct arlan_private *) dev->priv);
+
+ 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 device *dev, int status)
+{
+ struct arlan_private *priv = ((struct arlan_private *) dev->priv);
+
+ ARLAN_DEBUG_ENTRY("arlan_tx_done_interrupt");
+
+ priv->tx_last_cleared = jiffies;
+ priv->tx_command_given = 0;
+ priv->nof_tx_ack++;
+ 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)
+ {
+ priv->txOffset = 0;
+ dev->tbusy = 0;
+ mark_bh(NET_BH);
+ }
+ }
+ }
+ 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 device *dev, u_char rxStatus, u_short rxOffset, u_short pkt_len)
+{
+ char *skbtmp;
+ int i = 0;
+
+ struct arlan_private *priv = (struct arlan_private *) dev->priv;
+ volatile struct arlan_shmem *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 (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 (jiffies - priv->in_time10 > conf->measure_rate * HZ * 10)
+ {
+ 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_interupt;
+ }
+ }
+#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 *) 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);
+ priv->stats.rx_packets++;
+ }
+ break;
+
+ default:
+ printk(KERN_ERR "arlan intr: recieved unknown status\n");
+ priv->stats.rx_crc_errors++;
+ break;
+ }
+ ARLAN_DEBUG_EXIT("arlan_rx_interrupt");
+}
+
+static void arlan_process_interrupt(struct device *dev)
+{
+ struct arlan_private *priv = (struct arlan_private *) dev->priv;
+ volatile struct arlan_shmem *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 = arlan_time();
+
+ 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)
+ {
+ priv->last_command_was_rx = 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)
+ {
+ priv->last_command_was_rx = 0;
+ WRITESHMB(arlan->rxStatus, 0x00);
+ printk(KERN_ERR "%s unknown rxStatus reason tx %d rx %d ",
+ dev->name, txStatus, rxStatus);
+ goto ends;
+ }
+ if (rxStatus == 0xff)
+ {
+ priv->last_command_was_rx = 0;
+ WRITESHMB(arlan->rxStatus, 0x00);
+ arlan_command(dev, ARLAN_COMMAND_RX);
+ if (registrationBad(dev))
+ dev->start = 0;
+ if (!registrationBad(dev))
+ {
+ priv->registrationLastSeen = jiffies;
+ if (!dev->tbusy && !priv->under_reset && !priv->under_config)
+ {
+ mark_bh(NET_BH);
+ dev->start = 1;
+ }
+ }
+ 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 void arlan_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct device *dev = dev_id;
+ struct arlan_private *priv = (struct arlan_private *) dev->priv;
+ volatile struct arlan_shmem *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++;
+ dev->interrupt++;
+
+ arlan_process_interrupt(dev);
+
+ priv->irq_test_done = 1;
+ dev->interrupt--;
+
+ ARLAN_DEBUG_EXIT("arlan_interrupt");
+ return;
+
+}
+
+
+static int arlan_close(struct device *dev)
+{
+ struct arlan_private *priv = (struct arlan_private *) dev->priv;
+
+ if (!dev)
+ {
+ printk(KERN_CRIT "arlan: No Device\n");
+ return 0;
+ }
+ priv = (struct arlan_private *) dev->priv;
+ if (!priv)
+ {
+ printk(KERN_CRIT "arlan: No Device priv \n");
+ return 0;
+ }
+ ARLAN_DEBUG_ENTRY("arlan_close");
+
+ IFDEBUG(ARLAN_DEBUG_STARTUP)
+ printk(KERN_NOTICE "%s: Closing device\n", dev->name);
+
+ priv->open_time = 0;
+ dev->tbusy = 1;
+ dev->start = 0;
+ del_timer(&priv->timer);
+ free_irq(dev->irq, dev);
+
+ MOD_DEC_USE_COUNT;
+
+ ARLAN_DEBUG_EXIT("arlan_close");
+ return 0;
+}
+
+
+static long alignLong(volatile u_char * ptr)
+{
+ long ret;
+ memcpy_fromio(&ret, (void *) ptr, 4);
+ return ret;
+}
+
+
+/*
+ * Get the current statistics.
+ * This may be called with the card open or closed.
+ */
+
+static struct enet_statistics *arlan_statistics(struct device *dev)
+{
+ struct arlan_private *priv = (struct arlan_private *) dev->priv;
+ volatile struct arlan_shmem *arlan = ((struct arlan_private *) dev->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 device *dev)
+{
+ volatile struct arlan_shmem *arlan = ((struct arlan_private *) dev->priv)->card;
+ struct arlan_conf_stru *conf = ((struct arlan_private *) dev->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");
+}
+
+
+__initfunctio(int arlan_probe(struct device *dev))
+{
+ printk("Arlan driver %s\n", arlan_version);
+
+ if (arlan_probe_everywhere(dev))
+ return ENODEV;
+
+ arlans_found++;
+
+ if (arlans_found == 1)
+ siteName = kmalloc(100, GFP_KERNEL);
+ return 0;
+}
+
+#ifdef MODULE
+
+int init_module(void)
+{
+ int i = 0;
+
+ ARLAN_DEBUG_ENTRY("init_module");
+
+ if (channelSet != channelSetUNKNOWN || channelNumber != channelNumberUNKNOWN || systemId != systemIdUNKNOWN)
+ {
+ printk(KERN_WARNING "arlan: wrong module params for multiple devices\n ");
+ return -1;
+ }
+ numDevices = arlan_find_devices();
+ if (numDevices == 0)
+ {
+ printk(KERN_ERR "arlan: no devices found \n");
+ return -1;
+ }
+
+ siteName = kmalloc(100, GFP_KERNEL);
+ if(siteName==NULL)
+ {
+ printk(KERN_ERR "arlan: No memory for site name.\n");
+ return -1;
+ }
+ for (i = 0; i < numDevices && i < MAX_ARLANS; i++)
+ {
+ if (!arlan_allocate_device(i, NULL))
+ return -1;
+ if (arlan_device[i] == NULL)
+ {
+ printk(KERN_CRIT "arlan: Not Enough memory \n");
+ return -1;
+ }
+ if (probe)
+ arlan_probe_everywhere(arlan_device[i]);
+ }
+ printk(KERN_INFO "Arlan driver %s\n", arlan_version);
+ ARLAN_DEBUG_EXIT("init_module");
+ return 0;
+}
+
+
+void cleanup_module(void)
+{
+ int i = 0;
+
+ ARLAN_DEBUG_ENTRY("cleanup_module");
+
+ IFDEBUG(ARLAN_DEBUG_SHUTDOWN)
+ printk(KERN_INFO "arlan: unloading module\n");
+ for (i = 0; i < MAX_ARLANS; i++)
+ {
+ if (arlan_device[i])
+ {
+ unregister_netdev(arlan_device[i]);
+ if (arlan_device[i]->priv)
+ {
+ if (((struct arlan_private *) arlan_device[i]->priv)->conf)
+ kfree(((struct arlan_private *) arlan_device[i]->priv)->conf);
+ kfree(arlan_device[i]);
+ }
+ arlan_device[i] = NULL;
+ }
+ }
+ ARLAN_DEBUG_EXIT("cleanup_module");
+}
+
+
+#endif
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)