diff options
Diffstat (limited to 'drivers/staging/arlan/arlan-main.c')
| -rw-r--r-- | drivers/staging/arlan/arlan-main.c | 1887 |
1 files changed, 1887 insertions, 0 deletions
diff --git a/drivers/staging/arlan/arlan-main.c b/drivers/staging/arlan/arlan-main.c new file mode 100644 index 000000000000..921a082487a1 --- /dev/null +++ b/drivers/staging/arlan/arlan-main.c @@ -0,0 +1,1887 @@ +/* + * 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 "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 netdev_tx_t arlan_tx(struct sk_buff *skb, struct net_device *dev); +static irqreturn_t arlan_interrupt(int irq, void *dev_id); +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); + + dev->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 const struct net_device_ops arlan_netdev_ops = { + .ndo_open = arlan_open, + .ndo_stop = arlan_close, + .ndo_start_xmit = arlan_tx, + .ndo_get_stats = arlan_statistics, + .ndo_set_multicast_list = arlan_set_multicast, + .ndo_change_mtu = arlan_change_mtu, + .ndo_set_mac_address = arlan_mac_addr, + .ndo_tx_timeout = arlan_tx_timeout, + .ndo_validate_addr = eth_validate_addr, +}; + +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->netdev_ops = &arlan_netdev_ops; + 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 %llx, \n ", dev->name, + (u64) virt_to_phys((voi |