| /* |
| * 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 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(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_named(debug, 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_named(EEPROM_bad, arlan_EEPROM_bad, int, 0); |
| MODULE_PARM_DESC(debug, "Arlan debug enable (0-1)"); |
| MODULE_PARM_DESC(retries, "Arlan maximum packet retransmisions"); |
| #ifdef ARLAN_ENTRY_EXIT_DEBUGGING |
| static int arlan_entry_debug; |
| static int arlan_exit_debug; |
| static int arlan_entry_and_exit_debug; |
| module_param_named(entry_debug, arlan_entry_debug, int, 0); |
| module_param_named(exit_debug, arlan_exit_debug, int, 0); |
| module_param_named(entry_and_exit_debug, arlan_entry_and_exit_debug, int, 0); |
| MODULE_PARM_DESC(entry_debug, "Arlan driver function entry debugging"); |
| MODULE_PARM_DESC(exit_debug, "Arlan driver function exit debugging"); |
| MODULE_PARM_DESC(entry_and_exit_debug, "Arlan driver function entry and exit debugging"); |
| #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 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 __exit 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"); |