/******************************************************************************* * * Linux ThunderLAN Driver * * tlan.c * by James Banks * * (C) 1997-1998 Caldera, Inc. * (C) 1998 James Banks * (C) 1999, 2000 Torben Mathiasen * * This software may be used and distributed according to the terms * of the GNU Public License, incorporated herein by reference. * ** This file is best viewed/edited with columns>=132. * ** Useful (if not required) reading: * * Texas Instruments, ThunderLAN Programmer's Guide, * TI Literature Number SPWU013A * available in PDF format from www.ti.com * Level One, LXT901 and LXT970 Data Sheets * available in PDF format from www.level1.com * National Semiconductor, DP83840A Data Sheet * available in PDF format from www.national.com * Microchip Technology, 24C01A/02A/04A Data Sheet * available in PDF format from www.microchip.com * * Change History * * Tigran Aivazian : TLan_PciProbe() now uses * new PCI BIOS interface. * Alan Cox : Fixed the out of memory * handling. * * Torben Mathiasen New Maintainer! * * v1.1 Dec 20, 1999 - Removed linux version checking * Patch from Tigran Aivazian. * - v1.1 includes Alan's SMP updates. * - We still have problems on SMP though, * but I'm looking into that. * * v1.2 Jan 02, 2000 - Hopefully fixed the SMP deadlock. * - Removed dependency of HZ being 100. * - We now allow higher priority timers to * overwrite timers like TLAN_TIMER_ACTIVITY * Patch from John Cagle . * - Fixed a few compiler warnings. * * v1.3 Feb 04, 2000 - Fixed the remaining HZ issues. * - Removed call to pci_present(). * - Removed SA_INTERRUPT flag from irq handler. * - Added __init and __initdata to reduce resisdent * code size. * - Driver now uses module_init/module_exit. * - Rewrote init_module and tlan_probe to * share a lot more code. We now use tlan_probe * with builtin and module driver. * - Driver ported to new net API. * - tlan.txt has been reworked to reflect current * driver (almost) * - Other minor stuff * * v1.4 Feb 10, 2000 - Updated with more changes required after Dave's * network cleanup in 2.3.43pre7 (Tigran & myself) * - Minor stuff. * * v1.5 March 22, 2000 - Fixed another timer bug that would hang the driver * if no cable/link were present. * - Cosmetic changes. * - TODO: Port completely to new PCI/DMA API * Auto-Neg fallback. * * v1.6 April 04, 2000 - Fixed driver support for kernel-parameters. Haven't * tested it though, as the kernel support is currently * broken (2.3.99p4p3). * - Updated tlan.txt accordingly. * - Adjusted minimum/maximum frame length. * - There is now a TLAN website up at * http://tlan.kernel.dk * * v1.7 April 07, 2000 - Started to implement custom ioctls. Driver now * reports PHY information when used with Donald * Beckers userspace MII diagnostics utility. * * v1.8 April 23, 2000 - Fixed support for forced speed/duplex settings. * - Added link information to Auto-Neg and forced * modes. When NIC operates with auto-neg the driver * will report Link speed & duplex modes as well as * link partner abilities. When forced link is used, * the driver will report status of the established * link. * Please read tlan.txt for additional information. * - Removed call to check_region(), and used * return value of request_region() instead. * * v1.8a May 28, 2000 - Minor updates. * * v1.9 July 25, 2000 - Fixed a few remaining Full-Duplex issues. * - Updated with timer fixes from Andrew Morton. * - Fixed module race in TLan_Open. * - Added routine to monitor PHY status. * - Added activity led support for Proliant devices. * * v1.10 Aug 30, 2000 - Added support for EISA based tlan controllers * like the Compaq NetFlex3/E. * - Rewrote tlan_probe to better handle multiple * bus probes. Probing and device setup is now * done through TLan_Probe and TLan_init_one. Actual * hardware probe is done with kernel API and * TLan_EisaProbe. * - Adjusted debug information for probing. * - Fixed bug that would cause general debug information * to be printed after driver removal. * - Added transmit timeout handling. * - Fixed OOM return values in tlan_probe. * - Fixed possible mem leak in tlan_exit * (now tlan_remove_one). * - Fixed timer bug in TLan_phyMonitor. * - This driver version is alpha quality, please * send me any bug issues you may encounter. * * v1.11 Aug 31, 2000 - Do not try to register irq 0 if no irq line was * set for EISA cards. * - Added support for NetFlex3/E with nibble-rate * 10Base-T PHY. This is untestet as I haven't got * one of these cards. * - Fixed timer being added twice. * - Disabled PhyMonitoring by default as this is * work in progress. Define MONITOR to enable it. * - Now we don't display link info with PHYs that * doesn't support it (level1). * - Incresed tx_timeout beacuse of auto-neg. * - Adjusted timers for forced speeds. * * v1.12 Oct 12, 2000 - Minor fixes (memleak, init, etc.) * *******************************************************************************/ #include #include "tlan.h" #include #include #include #include #include #include typedef u32 (TLanIntVectorFunc)( struct net_device *, u16 ); /* For removing EISA devices */ static struct net_device *TLan_Eisa_Devices; static int TLanDevicesInstalled; /* Force speed, duplex and aui settings */ static int aui; static int duplex; static int speed; MODULE_AUTHOR("Maintainer: Torben Mathiasen "); MODULE_DESCRIPTION("Driver for TI ThunderLAN based ethernet PCI adapters"); MODULE_PARM(aui, "i"); MODULE_PARM(duplex, "i"); MODULE_PARM(speed, "i"); MODULE_PARM(debug, "i"); EXPORT_NO_SYMBOLS; /* Define this to enable Link beat monitoring */ #undef MONITOR /* Turn on debugging. See linux/Documentation/networking/tlan.txt for details */ static int debug; static int bbuf; static u8 *TLanPadBuffer; static char TLanSignature[] = "TLAN"; static const char *tlan_banner = "ThunderLAN driver v1.12\n"; static int tlan_have_pci; static int tlan_have_eisa; const char *media[] = { "10BaseT-HD ", "10BaseT-FD ","100baseTx-HD ", "100baseTx-FD", "100baseT4", 0 }; int media_map[] = { 0x0020, 0x0040, 0x0080, 0x0100, 0x0200,}; static struct board { const char *deviceLabel; u32 flags; u16 addrOfs; } board_info[] __devinitdata = { { "Compaq Netelligent 10 T PCI UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 }, { "Compaq Netelligent 10/100 TX PCI UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 }, { "Compaq Integrated NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 }, { "Compaq NetFlex-3/P", TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 }, { "Compaq NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 }, { "Compaq Netelligent Integrated 10/100 TX UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 }, { "Compaq Netelligent Dual 10/100 TX PCI UTP", TLAN_ADAPTER_NONE, 0x83 }, { "Compaq Netelligent 10/100 TX Embedded UTP", TLAN_ADAPTER_NONE, 0x83 }, { "Olicom OC-2183/2185", TLAN_ADAPTER_USE_INTERN_10, 0x83 }, { "Olicom OC-2325", TLAN_ADAPTER_UNMANAGED_PHY, 0xF8 }, { "Olicom OC-2326", TLAN_ADAPTER_USE_INTERN_10, 0xF8 }, { "Compaq Netelligent 10/100 TX UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 }, { "Compaq Netelligent 10 T/2 PCI UTP/Coax", TLAN_ADAPTER_NONE, 0x83 }, { "Compaq NetFlex-3/E", TLAN_ADAPTER_ACTIVITY_LED | /* EISA card */ TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 }, { "Compaq NetFlex-3/E", TLAN_ADAPTER_ACTIVITY_LED, 0x83 }, /* EISA card */ }; static struct pci_device_id tlan_pci_tbl[] __devinitdata = { { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_100, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 }, { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETFLEX_3P_INTEGRATED, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2 }, { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETFLEX_3P, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3 }, { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETFLEX_3P_BNC, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 }, { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_100_PROLIANT, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5 }, { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_100_DUAL, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6 }, { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_DESKPRO_4000_5233MMX, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 7 }, { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2183, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 8 }, { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2325, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 9 }, { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2326, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 10 }, { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_100_WS_5100, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 11 }, { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_T2, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 12 }, { 0,} }; MODULE_DEVICE_TABLE(pci, tlan_pci_tbl); static void TLan_EisaProbe( void ); static void TLan_Eisa_Cleanup( void ); static int TLan_Init( struct net_device * ); static int TLan_Open( struct net_device *dev ); static int TLan_StartTx( struct sk_buff *, struct net_device *); static void TLan_HandleInterrupt( int, void *, struct pt_regs *); static int TLan_Close( struct net_device *); static struct net_device_stats *TLan_GetStats( struct net_device *); static void TLan_SetMulticastList( struct net_device *); static int TLan_ioctl( struct net_device *dev, struct ifreq *rq, int cmd); static int TLan_probe1( struct pci_dev *pdev, long ioaddr, int irq, int rev, const struct pci_device_id *ent); static void TLan_tx_timeout( struct net_device *dev); static int tlan_init_one( struct pci_dev *pdev, const struct pci_device_id *ent); static u32 TLan_HandleInvalid( struct net_device *, u16 ); static u32 TLan_HandleTxEOF( struct net_device *, u16 ); static u32 TLan_HandleStatOverflow( struct net_device *, u16 ); static u32 TLan_HandleRxEOF( struct net_device *, u16 ); static u32 TLan_HandleDummy( struct net_device *, u16 ); static u32 TLan_HandleTxEOC( struct net_device *, u16 ); static u32 TLan_HandleStatusCheck( struct net_device *, u16 ); static u32 TLan_HandleRxEOC( struct net_device *, u16 ); static void TLan_Timer( unsigned long ); static void TLan_ResetLists( struct net_device * ); static void TLan_FreeLists( struct net_device * ); static void TLan_PrintDio( u16 ); static void TLan_PrintList( TLanList *, char *, int ); static void TLan_ReadAndClearStats( struct net_device *, int ); static void TLan_ResetAdapter( struct net_device * ); static void TLan_FinishReset( struct net_device * ); static void TLan_SetMac( struct net_device *, int areg, char *mac ); static void TLan_PhyPrint( struct net_device * ); static void TLan_PhyDetect( struct net_device * ); static void TLan_PhyPowerDown( struct net_device * ); static void TLan_PhyPowerUp( struct net_device * ); static void TLan_PhyReset( struct net_device * ); static void TLan_PhyStartLink( struct net_device * ); static void TLan_PhyFinishAutoNeg( struct net_device * ); #ifdef MONITOR static void TLan_PhyMonitor( struct net_device * ); #endif /* static int TLan_PhyNop( struct net_device * ); static int TLan_PhyInternalCheck( struct net_device * ); static int TLan_PhyInternalService( struct net_device * ); static int TLan_PhyDp83840aCheck( struct net_device * ); */ static int TLan_MiiReadReg( struct net_device *, u16, u16, u16 * ); static void TLan_MiiSendData( u16, u32, unsigned ); static void TLan_MiiSync( u16 ); static void TLan_MiiWriteReg( struct net_device *, u16, u16, u16 ); static void TLan_EeSendStart( u16 ); static int TLan_EeSendByte( u16, u8, int ); static void TLan_EeReceiveByte( u16, u8 *, int ); static int TLan_EeReadByte( struct net_device *, u8, u8 * ); static TLanIntVectorFunc *TLanIntVector[TLAN_INT_NUMBER_OF_INTS] = { TLan_HandleInvalid, TLan_HandleTxEOF, TLan_HandleStatOverflow, TLan_HandleRxEOF, TLan_HandleDummy, TLan_HandleTxEOC, TLan_HandleStatusCheck, TLan_HandleRxEOC }; static inline void TLan_SetTimer( struct net_device *dev, u32 ticks, u32 type ) { TLanPrivateInfo *priv = (TLanPrivateInfo *) dev->priv; unsigned long flags; spin_lock_irqsave(&priv->lock, flags); if ( priv->timer.function != NULL && priv->timerType != TLAN_TIMER_ACTIVITY ) { spin_unlock_irqrestore(&priv->lock, flags); return; } priv->timer.function = &TLan_Timer; spin_unlock_irqrestore(&priv->lock, flags); priv->timer.data = (unsigned long) dev; priv->timerSetAt = jiffies; priv->timerType = type; mod_timer(&priv->timer, jiffies + ticks); } /* TLan_SetTimer */ /***************************************************************************** ****************************************************************************** ThunderLAN Driver Primary Functions These functions are more or less common to all Linux network drivers. ****************************************************************************** *****************************************************************************/ /*************************************************************** * tlan_remove_one * * Returns: * Nothing * Parms: * None * * Goes through the TLanDevices list and frees the device * structs and memory associated with each device (lists * and buffers). It also ureserves the IO port regions * associated with this device. * **************************************************************/ static void __devexit tlan_remove_one( struct pci_dev *pdev) { struct net_device *dev = pdev->driver_data; TLanPrivateInfo *priv = (TLanPrivateInfo *) dev->priv; unregister_netdev( dev ); if ( priv->dmaStorage ) { kfree( priv->dmaStorage ); } release_region( dev->base_addr, 0x10 ); kfree( dev ); } static struct pci_driver tlan_driver = { name: "tlan", id_table: tlan_pci_tbl, probe: tlan_init_one, remove: tlan_remove_one, }; static int __init tlan_probe(void) { static int pad_allocated = 0; printk(KERN_INFO "%s", tlan_banner); TLanPadBuffer = (u8 *) kmalloc(TLAN_MIN_FRAME_SIZE, (GFP_KERNEL | GFP_DMA)); if (TLanPadBuffer == NULL) { printk(KERN_ERR "TLAN: Could not allocate memory for pad buffer.\n"); return -ENOMEM; } memset(TLanPadBuffer, 0, TLAN_MIN_FRAME_SIZE); pad_allocated = 1; TLAN_DBG(TLAN_DEBUG_PROBE, "Starting PCI Probe....\n"); /* Use new style PCI probing. Now the kernel will do most of this for us */ pci_module_init(&tlan_driver); TLAN_DBG(TLAN_DEBUG_PROBE, "Starting EISA Probe....\n"); TLan_EisaProbe(); printk(KERN_INFO "TLAN: %d device%s installed, PCI: %d EISA: %d\n", TLanDevicesInstalled, TLanDevicesInstalled == 1 ? "" : "s", tlan_have_pci, tlan_have_eisa); return ((TLanDevicesInstalled > 0) ? 0 : -ENODEV); } static int __devinit tlan_init_one( struct pci_dev *pdev, const struct pci_device_id *ent) { return TLan_probe1( pdev, pci_resource_start(pdev, 0), pdev->irq, 0, ent); } /* *************************************************************** * tlan_probe1 * * Returns: * 0 on success, error code on error * Parms: * none * * The name is lower case to fit in with all the rest of * the netcard_probe names. This function looks for * another TLan based adapter, setting it up with the * allocated device struct if one is found. * tlan_probe has been ported to the new net API and * now allocates its own device structure. This function * is also used by modules. * **************************************************************/ static int __devinit TLan_probe1(struct pci_dev *pdev, long ioaddr, int irq, int rev, const struct pci_device_id *ent ) { struct net_device *dev; TLanPrivateInfo *priv; u8 pci_rev; u16 device_id; dev = init_etherdev(NULL, sizeof(TLanPrivateInfo)); if (dev == NULL) { printk(KERN_ERR "TLAN: Could not allocate memory for device.\n"); return -ENOMEM; } SET_MODULE_OWNER(dev); priv = dev->priv; dev->base_addr = ioaddr; dev->irq = irq; /* Is this a PCI device? */ if (pdev) { priv->adapter = &board_info[ent->driver_data]; if (pci_enable_device(pdev)) { unregister_netdev(dev); kfree(dev); return -1; } pci_read_config_byte ( pdev, PCI_REVISION_ID, &pci_rev); priv->adapterRev = pci_rev; pci_set_master(pdev); pdev->driver_data = dev; } else { /* EISA card */ /* This is a hack. We need to know which board structure * is suited for this adapter */ device_id = inw(ioaddr + EISA_ID2); priv->is_eisa = 1; if (device_id == 0x20F1) { priv->adapter = &board_info[13]; /* NetFlex-3/E */ priv->adapterRev = 23; /* TLAN 2.3 */ } else { priv->adapter = &board_info[14]; priv->adapterRev = 10; /* TLAN 1.0 */ } } /* Kernel parameters */ if (dev->mem_start) { priv->aui = dev->mem_start & 0x01; priv->duplex = ((dev->mem_start & 0x06) == 0x06) ? 0 : (dev->mem_start & 0x06) >> 1; priv->speed = ((dev->mem_start & 0x18) == 0x18) ? 0 : (dev->mem_start & 0x18) >> 3; if (priv->speed == 0x1) { priv->speed = TLAN_SPEED_10; } else if (priv->speed == 0x2) { priv->speed = TLAN_SPEED_100; } debug = priv->debug = dev->mem_end; } else { if ( ( duplex != 1 ) && ( duplex != 2 ) ) duplex = 0; priv->duplex = duplex; if ( ( speed != 10 ) && ( speed != 100 ) ) speed = 0; priv->aui = aui; priv->speed = speed; priv->debug = debug; } spin_lock_init(&priv->lock); if (TLan_Init(dev)) { printk(KERN_ERR "TLAN: Could not register device.\n"); unregister_netdev(dev); kfree(dev); return -EAGAIN; } else { TLanDevicesInstalled++; /* pdev is NULL if this is an EISA device */ if (pdev) tlan_have_pci++; else { priv->nextDevice = TLan_Eisa_Devices; TLan_Eisa_Devices = dev; tlan_have_eisa++; } printk(KERN_INFO "TLAN: %s irq=%2d, io=%04x, %s, Rev. %d\n", dev->name, (int) dev->irq, (int) dev->base_addr, priv->adapter->deviceLabel, priv->adapterRev); return 0; } } static void TLan_Eisa_Cleanup(void) { struct net_device *dev; TLanPrivateInfo *priv; while( tlan_have_eisa ) { dev = TLan_Eisa_Devices; priv = (TLanPrivateInfo *) dev->priv; if (priv->dmaStorage) { kfree(priv->dmaStorage); } release_region( dev->base_addr, 0x10); unregister_netdev( dev ); TLan_Eisa_Devices = priv->nextDevice; kfree( dev ); tlan_have_eisa--; } } static void __exit tlan_exit(void) { if (tlan_have_pci) pci_unregister_driver(&tlan_driver); if (tlan_have_eisa) TLan_Eisa_Cleanup(); kfree( TLanPadBuffer ); } /* Module loading/unloading */ module_init(tlan_probe); module_exit(tlan_exit); /************************************************************** * TLan_EisaProbe * * Returns: 0 on success, 1 otherwise * * Parms: None * * * This functions probes for EISA devices and calls * TLan_probe1 when one is found. * *************************************************************/ static void __init TLan_EisaProbe (void) { long ioaddr; int rc = -ENODEV; int irq; u16 device_id; if (!EISA_bus) { TLAN_DBG(TLAN_DEBUG_PROBE, "No EISA bus present\n"); return; } /* Loop through all slots of the EISA bus */ for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) { TLAN_DBG(TLAN_DEBUG_PROBE,"EISA_ID 0x%4x: 0x%4x\n", (int) ioaddr + 0xC80, inw(ioaddr + EISA_ID)); TLAN_DBG(TLAN_DEBUG_PROBE,"EISA_ID 0x%4x: 0x%4x\n", (int) ioaddr + 0xC82, inw(ioaddr + EISA_ID2)); TLAN_DBG(TLAN_DEBUG_PROBE, "Probing for EISA adapter at IO: 0x%4x : ", (int) ioaddr); if (request_region(ioaddr, 0x10, TLanSignature) == NULL) goto out; if (inw(ioaddr + EISA_ID) != 0x110E) { release_region(ioaddr, 0x10); goto out; } device_id = inw(ioaddr + EISA_ID2); if (device_id != 0x20F1 && device_id != 0x40F1) { release_region (ioaddr, 0x10); goto out; } if (inb(ioaddr + EISA_CR) != 0x1) { /* Check if adapter is enabled */ release_region (ioaddr, 0x10); goto out2; } if (debug == 0x10) printk("Found one\n"); /* Get irq from board */ switch (inb(ioaddr + 0xCC0)) { case(0x10): irq=5; break; case(0x20): irq=9; break; case(0x40): irq=10; break; case(0x80): irq=11; break; default: goto out; } /* Setup the newly found eisa adapter */ rc = TLan_probe1( NULL, ioaddr, irq, 12, NULL); continue; out: if (debug == 0x10) printk("None found\n"); continue; out2: if (debug == 0x10) printk("Card found but it is not enabled, skipping\n"); continue; } } /* TLan_EisaProbe */ /*************************************************************** * TLan_Init * * Returns: * 0 on success, error code otherwise. * Parms: * dev The structure of the device to be * init'ed. * * This function completes the initialization of the * device structure and driver. It reserves the IO * addresses, allocates memory for the lists and bounce * buffers, retrieves the MAC address from the eeprom * and assignes the device's methods. * **************************************************************/ static int TLan_Init( struct net_device *dev ) { int dma_size; int err; int i; TLanPrivateInfo *priv; priv = (TLanPrivateInfo *) dev->priv; if (!priv->is_eisa) /* EISA devices have already requested IO */ if (!request_region( dev->base_addr, 0x10, TLanSignature )) { printk(KERN_ERR "TLAN: %s: IO port region 0x%lx size 0x%x in use.\n", dev->name, dev->base_addr, 0x10 ); return -EIO; } if ( bbuf ) { dma_size = ( TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS ) * ( sizeof(TLanList) + TLAN_MAX_FRAME_SIZE ); } else { dma_size = ( TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS ) * ( sizeof(TLanList) ); } priv->dmaStorage = kmalloc(dma_size, GFP_KERNEL | GFP_DMA); if ( priv->dmaStorage == NULL ) { printk(KERN_ERR "TLAN: Could not allocate lists and buffers for %s.\n", dev->name ); return -ENOMEM; } memset( priv->dmaStorage, 0, dma_size ); priv->rxList = (TLanList *) ( ( ( (u32) priv->dmaStorage ) + 7 ) & 0xFFFFFFF8 ); priv->txList = priv->rxList + TLAN_NUM_RX_LISTS; if ( bbuf ) { priv->rxBuffer = (u8 *) ( priv->txList + TLAN_NUM_TX_LISTS ); priv->txBuffer = priv->rxBuffer + ( TLAN_NUM_RX_LISTS * TLAN_MAX_FRAME_SIZE ); } err = 0; for ( i = 0; i < 6 ; i++ ) err |= TLan_EeReadByte( dev, (u8) priv->adapter->addrOfs + i, (u8 *) &dev->dev_addr[i] ); if ( err ) { printk(KERN_ERR "TLAN: %s: Error reading MAC from eeprom: %d\n", dev->name, err ); } dev->addr_len = 6; /* Device methods */ dev->open = &TLan_Open; dev->hard_start_xmit = &TLan_StartTx; dev->stop = &TLan_Close; dev->get_stats = &TLan_GetStats; dev->set_multicast_list = &TLan_SetMulticastList; dev->do_ioctl = &TLan_ioctl; dev->tx_timeout = &TLan_tx_timeout; dev->watchdog_timeo = TX_TIMEOUT; return 0; } /* TLan_Init */ /*************************************************************** * TLan_Open * * Returns: * 0 on success, error code otherwise. * Parms: * dev Structure of device to be opened. * * This routine puts the driver and TLAN adapter in a * state where it is ready to send and receive packets. * It allocates the IRQ, resets and brings the adapter * out of reset, and allows interrupts. It also delays * the startup for autonegotiation or sends a Rx GO * command to the adapter, as appropriate. * **************************************************************/ static int TLan_Open( struct net_device *dev ) { TLanPrivateInfo *priv = (TLanPrivateInfo *) dev->priv; int err; priv->tlanRev = TLan_DioRead8( dev->base_addr, TLAN_DEF_REVISION ); err = request_irq( dev->irq, TLan_HandleInterrupt, SA_SHIRQ, TLanSignature, dev ); if ( err ) { printk(KERN_ERR "TLAN: Cannot open %s because IRQ %d is already in use.\n", dev->name, dev->irq ); return err; } init_timer(&priv->timer); netif_start_queue(dev); /* NOTE: It might not be necessary to read the stats before a reset if you don't care what the values are. */ TLan_ResetLists( dev ); TLan_ReadAndClearStats( dev, TLAN_IGNORE ); TLan_ResetAdapter( dev ); TLAN_DBG( TLAN_DEBUG_GNRL, "%s: Opened. TLAN Chip Rev: %x\n", dev->name, priv->tlanRev ); return 0; } /* TLan_Open */ /************************************************************** * TLan_ioctl * * Returns: * 0 on success, error code otherwise * Params: * dev structure of device to receive ioctl. * * rq ifreq structure to hold userspace data. * * cmd ioctl command. * * *************************************************************/ static int TLan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) { TLanPrivateInfo *priv = (TLanPrivateInfo *) dev->priv; u16 *data = (u16 *)&rq->ifr_data; u32 phy = priv->phy[priv->phyNum]; if (!priv->phyOnline) return -EAGAIN; switch(cmd) { case SIOCDEVPRIVATE: data[0] = phy; case SIOCDEVPRIVATE+1: /* Read MII register */ TLan_MiiReadReg(dev, data[0], data[1], &data[3]); return 0; case SIOCDEVPRIVATE+2: /* Write MII register */ if (!capable(CAP_NET_ADMIN)) return -EPERM; TLan_MiiWriteReg(dev, data[0], data[1], data[2]); return 0; default: return -EOPNOTSUPP; } } /* tlan_ioctl */ /*************************************************************** * TLan_tx_timeout * * Returns: nothing * * Params: * dev structure of device which timed out * during transmit. * **************************************************************/ static void TLan_tx_timeout(struct net_device *dev) { TLAN_DBG( TLAN_DEBUG_GNRL, "%s: Transmit timed out.\n", dev->name); /* Ok so we timed out, lets see what we can do about it...*/ TLan_ResetLists( dev ); TLan_ReadAndClearStats( dev, TLAN_IGNORE ); TLan_ResetAdapter( dev ); dev->trans_start = jiffies; netif_wake_queue( dev ); } /*************************************************************** * TLan_StartTx * * Returns: * 0 on success, non-zero on failure. * Parms: * skb A pointer to the sk_buff containing the * frame to be sent. * dev The device to send the data on. * * This function adds a frame to the Tx list to be sent * ASAP. First it verifies that the adapter is ready and * there is room in the queue. Then it sets up the next * available list, copies the frame to the corresponding * buffer. If the adapter Tx channel is idle, it gives * the adapter a Tx Go command on the list, otherwise it * sets the forward address of the previous list to point * to this one. Then it frees the sk_buff. * **************************************************************/ static int TLan_StartTx( struct sk_buff *skb, struct net_device *dev ) { TLanPrivateInfo *priv = (TLanPrivateInfo *) dev->priv; TLanList *tail_list; u8 *tail_buffer; int pad; unsigned long flags; if ( ! priv->phyOnline ) { TLAN_DBG( TLAN_DEBUG_TX, "TRANSMIT: %s PHY is not ready\n", dev->name ); dev_kfree_skb_any(skb); return 0; } tail_list = priv->txList + priv->txTail; if ( tail_list->cStat != TLAN_CSTAT_UNUSED ) { TLAN_DBG( TLAN_DEBUG_TX, "TRANSMIT: %s is busy (Head=%d Tail=%d)\n", dev->name, priv->txHead, priv->txTail ); netif_stop_queue(dev); priv->txBusyCount++; return 1; } tail_list->forward = 0; if ( bbuf ) { tail_buffer = priv->txBuffer + ( priv->txTail * TLAN_MAX_FRAME_SIZE ); memcpy( tail_buffer, skb->data, skb->len ); } else { tail_list->buffer[0].address = virt_to_bus( skb->data ); tail_list->buffer[9].address = (u32) skb; } pad = TLAN_MIN_FRAME_SIZE - skb->len; if ( pad > 0 ) { tail_list->frameSize = (u16) skb->len + pad; tail_list->buffer[0].count = (u32) skb->len; tail_list->buffer[1].count = TLAN_LAST_BUFFER | (u32) pad; tail_list->buffer[1].address = virt_to_bus( TLanPadBuffer ); } else { tail_list->frameSize = (u16) skb->len; tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) skb->len; tail_list->buffer[1].count = 0; tail_list->buffer[1].address = 0; } spin_lock_irqsave(&priv->lock, flags); tail_list->cStat = TLAN_CSTAT_READY; if ( ! priv->txInProgress ) { priv->txInProgress = 1; outw( 0x4, dev->base_addr + TLAN_HOST_INT ); TLAN_DBG( TLAN_DEBUG_TX, "TRANSMIT: Starting TX on buffer %d\n", priv->txTail ); outl( virt_to_bus( tail_list ), dev->base_addr + TLAN_CH_PARM ); outl( TLAN_HC_GO | TLAN_HC_ACK, dev->base_addr + TLAN_HOST_CMD ); } else { TLAN_DBG( TLAN_DEBUG_TX, "TRANSMIT: Adding buffer %d to TX channel\n", priv->txTail ); if ( priv->txTail == 0 ) { ( priv->txList + ( TLAN_NUM_TX_LISTS - 1 ) )->forward = virt_to_bus( tail_list ); } else { ( priv->txList + ( priv->txTail - 1 ) )->forward = virt_to_bus( tail_list ); } } spin_unlock_irqrestore(&priv->lock, flags); CIRC_INC( priv->txTail, TLAN_NUM_TX_LISTS ); if ( bbuf ) dev_kfree_skb_any(skb); dev->trans_start = jiffies; return 0; } /* TLan_StartTx */ /*************************************************************** * TLan_HandleInterrupt * * Returns: * Nothing * Parms: * irq The line on which the interrupt * occurred. * dev_id A pointer to the device assigned to * this irq line. * regs ??? * * This function handles an interrupt generated by its * assigned TLAN adapter. The function deactivates * interrupts on its adapter, records the type of * interrupt, executes the appropriate subhandler, and * acknowdges the interrupt to the adapter (thus * re-enabling adapter interrupts. * **************************************************************/ static void TLan_HandleInterrupt(int irq, void *dev_id, struct pt_regs *regs) { u32 ack; struct net_device *dev; u32 host_cmd; u16 host_int; int type; TLanPrivateInfo *priv; dev = (struct net_device *) dev_id; priv = (TLanPrivateInfo *) dev->priv; spin_lock(&priv->lock); host_int = inw( dev->base_addr + TLAN_HOST_INT ); outw( host_int, dev->base_addr + TLAN_HOST_INT ); type = ( host_int & TLAN_HI_IT_MASK ) >> 2; ack = TLanIntVector[type]( dev, host_int ); if ( ack ) { host_cmd = TLAN_HC_ACK | ack | ( type << 18 ); outl( host_cmd, dev->base_addr + TLAN_HOST_CMD ); } spin_unlock(&priv->lock); } /* TLan_HandleInterrupts */ /*************************************************************** * TLan_Close * * Returns: * An error code. * Parms: * dev The device structure of the device to * close. * * This function shuts down the adapter. It records any * stats, puts the adapter into reset state, deactivates * its time as needed, and frees the irq it is using. * **************************************************************/ static int TLan_Close(struct net_device *dev) { TLanPrivateInfo *priv = (TLanPrivateInfo *) dev->priv; netif_stop_queue(dev); TLan_ReadAndClearStats( dev, TLAN_RECORD ); outl( TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD ); if ( priv->timer.function != NULL ) { del_timer_sync( &priv->timer ); priv->timer.function = NULL; } free_irq( dev->irq, dev ); TLan_FreeLists( dev ); TLAN_DBG( TLAN_DEBUG_GNRL, "Device %s closed.\n", dev->name ); return 0; } /* TLan_Close */ /*************************************************************** * TLan_GetStats * * Returns: * A pointer to the device's statistics structure. * Parms: * dev The device structure to return the * stats for. * * This function updates the devices statistics by reading * the TLAN chip's onboard registers. Then it returns the * address of the statistics structure. * **************************************************************/ static struct net_device_stats *TLan_GetStats( struct net_device *dev ) { TLanPrivateInfo *priv = (TLanPrivateInfo *) dev->priv; int i; /* Should only read stats if open ? */ TLan_ReadAndClearStats( dev, TLAN_RECORD ); TLAN_DBG( TLAN_DEBUG_RX, "RECEIVE: %s EOC count = %d\n", dev->name, priv->rxEocCount ); TLAN_DBG( TLAN_DEBUG_TX, "TRANSMIT: %s Busy count = %d\n", dev->name, priv->txBusyCount ); if ( debug & TLAN_DEBUG_GNRL ) { TLan_PrintDio( dev->base_addr ); TLan_PhyPrint( dev ); } if ( debug & TLAN_DEBUG_LIST ) { for ( i = 0; i < TLAN_NUM_RX_LISTS; i++ ) TLan_PrintList( priv->rxList + i, "RX", i ); for ( i = 0; i < TLAN_NUM_TX_LISTS; i++ ) TLan_PrintList( priv->txList + i, "TX", i ); } return ( &( (TLanPrivateInfo *) dev->priv )->stats ); } /* TLan_GetStats */ /*************************************************************** * TLan_SetMulticastList * * Returns: * Nothing * Parms: * dev The device structure to set the * multicast list for. * * This function sets the TLAN adaptor to various receive * modes. If the IFF_PROMISC flag is set, promiscuous * mode is acitviated. Otherwise, promiscuous mode is * turned off. If the IFF_ALLMULTI flag is set, then * the hash table is set to receive all group addresses. * Otherwise, the first three multicast addresses are * stored in AREG_1-3, and the rest are selected via the * hash table, as necessary. * **************************************************************/ static void TLan_SetMulticastList( struct net_device *dev ) { struct dev_mc_list *dmi = dev->mc_list; u32 hash1 = 0; u32 hash2 = 0; int i; u32 offset; u8 tmp; if ( dev->flags & IFF_PROMISC ) { tmp = TLan_DioRead8( dev->base_addr, TLAN_NET_CMD ); TLan_DioWrite8( dev->base_addr, TLAN_NET_CMD, tmp | TLAN_NET_CMD_CAF ); } else { tmp = TLan_DioRead8( dev->base_addr, TLAN_NET_CMD ); TLan_DioWrite8( dev->base_addr, TLAN_NET_CMD, tmp & ~TLAN_NET_CMD_CAF ); if ( dev->flags & IFF_ALLMULTI ) { for ( i = 0; i < 3; i++ ) TLan_SetMac( dev, i + 1, NULL ); TLan_DioWrite32( dev->base_addr, TLAN_HASH_1, 0xFFFFFFFF ); TLan_DioWrite32( dev->base_addr, TLAN_HASH_2, 0xFFFFFFFF ); } else { for ( i = 0; i < dev->mc_count; i++ ) { if ( i < 3 ) { TLan_SetMac( dev, i + 1, (char *) &dmi->dmi_addr ); } else { offset = TLan_HashFunc( (u8 *) &dmi->dmi_addr ); if ( offset < 32 ) hash1 |= ( 1 << offset ); else hash2 |= ( 1 << ( offset - 32 ) ); } dmi = dmi->next; } for ( ; i < 3; i++ ) TLan_SetMac( dev, i + 1, NULL ); TLan_DioWrite32( dev->base_addr, TLAN_HASH_1, hash1 ); TLan_DioWrite32( dev->base_addr, TLAN_HASH_2, hash2 ); } } } /* TLan_SetMulticastList */ /***************************************************************************** ****************************************************************************** ThunderLAN Driver Interrupt Vectors and Table Please see Chap. 4, "Interrupt Handling" of the "ThunderLAN Programmer's Guide" for more informations on handling interrupts generated by TLAN based adapters. ****************************************************************************** *****************************************************************************/ /*************************************************************** * TLan_HandleInvalid * * Returns: * 0 * Parms: * dev Device assigned the IRQ that was * raised. * host_int The contents of the HOST_INT * port. * * This function handles invalid interrupts. This should * never happen unless some other adapter is trying to use * the IRQ line assigned to the device. * **************************************************************/ u32 TLan_HandleInvalid( struct net_device *dev, u16 host_int ) { host_int = 0; /* printk( "TLAN: Invalid interrupt on %s.\n", dev->name ); */ return 0; } /* TLan_HandleInvalid */ /*************************************************************** * TLan_HandleTxEOF * * Returns: * 1 * Parms: * dev Device assigned the IRQ that was * raised. * host_int The contents of the HOST_INT * port. * * This function handles Tx EOF interrupts which are raised * by the adapter when it has completed sending the * contents of a buffer. If detemines which list/buffer * was completed and resets it. If the buffer was the last * in the channel (EOC), then the function checks to see if * another buffer is ready to send, and if so, sends a Tx * Go command. Finally, the driver activates/continues the * activity LED. * **************************************************************/ u32 TLan_HandleTxEOF( struct net_device *dev, u16 host_int ) { TLanPrivateInfo *priv = (TLanPrivateInfo *) dev->priv; int eoc = 0; TLanList *head_list; u32 ack = 1; TLAN_DBG( TLAN_DEBUG_TX, "TRANSMIT: Handling TX EOF (Head=%d Tail=%d)\n", priv->txHead, priv->txTail ); host_int = 0; head_list = priv->txList + priv->txHead; if ( ! bbuf ) { dev_kfree_skb_irq( (struct sk_buff *) head_list->buffer[9].address ); head_list->buffer[9].address = 0; } if ( head_list->cStat & TLAN_CSTAT_EOC ) eoc = 1; if ( ! head_list->cStat & TLAN_CSTAT_FRM_CMP ) { printk( "TLAN: Received interrupt for uncompleted TX frame.\n" ); } priv->stats.tx_bytes += head_list->frameSize; head_list->cStat = TLAN_CSTAT_UNUSED; netif_start_queue(dev); CIRC_INC( priv->txHead, TLAN_NUM_TX_LISTS ); if ( eoc ) { TLAN_DBG( TLAN_DEBUG_TX, "TRANSMIT: Handling TX EOC (Head=%d Tail=%d)\n", priv->txHead, priv->txTail ); head_list = priv->txList + priv->txHead; if ( ( head_list->cStat & TLAN_CSTAT_READY ) == TLAN_CSTAT_READY ) { outl( virt_to_bus( head_list ), dev->base_addr + TLAN_CH_PARM ); ack |= TLAN_HC_GO; } else { priv->txInProgress = 0; } } if ( priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED ) { TLan_DioWrite8( dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT ); if ( priv->timer.function == NULL ) { priv->timer.function = &TLan_Timer; priv->timer.data = (unsigned long) dev; priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY; priv->timerSetAt = jiffies; priv->timerType = TLAN_TIMER_ACTIVITY; add_timer(&priv->timer); } else if ( priv->timerType == TLAN_TIMER_ACTIVITY ) { priv->timerSetAt = jiffies; } } return ack; } /* TLan_HandleTxEOF */ /*************************************************************** * TLan_HandleStatOverflow * * Returns: * 1 * Parms: * dev Device assigned the IRQ that was * raised. * host_int The contents of the HOST_INT * port. * * This function handles the Statistics Overflow interrupt * which means that one or more of the TLAN statistics * registers has reached 1/2 capacity and needs to be read. * **************************************************************/ u32 TLan_HandleStatOverflow( struct net_device *dev, u16 host_int ) { host_int = 0; TLan_ReadAndClearStats( dev, TLAN_RECORD ); return 1; } /* TLan_HandleStatOverflow */ /*************************************************************** * TLan_HandleRxEOF * * Returns: * 1 * Parms: * dev Device assigned the IRQ that was * raised. * host_int The contents of the HOST_INT * port. * * This function handles the Rx EOF interrupt which * indicates a frame has been received by the adapter from * the net and the frame has been transferred to memory. * The function determines the bounce buffer the frame has * been loaded into, creates a new sk_buff big enough to * hold the frame, and sends it to protocol stack. It * then resets the used buffer and appends it to the end * of the list. If the frame was the last in the Rx * channel (EOC), the function restarts the receive channel * by sending an Rx Go command to the adapter. Then it * activates/continues the the activity LED. * **************************************************************/ u32 TLan_HandleRxEOF( struct net_device *dev, u16 host_int ) { TLanPrivateInfo *priv = (TLanPrivateInfo *) dev->priv; u32 ack = 1; int eoc = 0; u8 *head_buffer; TLanList *head_list; struct sk_buff *skb; TLanList *tail_list; void *t; TLAN_DBG( TLAN_DEBUG_RX, "RECEIVE: Handling RX EOF (Head=%d Tail=%d)\n", priv->rxHead, priv->rxTail ); host_int = 0; head_list = priv->rxList + priv->rxHead; tail_list = priv->rxList + priv->rxTail; if ( head_list->cStat & TLAN_CSTAT_EOC ) { eoc = 1; } if ( ! head_list->cStat & TLAN_CSTAT_FRM_CMP ) { printk( "TLAN: Received interrupt for uncompleted RX frame.\n" ); } else if ( bbuf ) { skb = dev_alloc_skb( head_list->frameSize + 7 ); if ( skb == NULL ) { printk( "TLAN: Couldn't allocate memory for received data.\n" ); } else { head_buffer = priv->rxBuffer + ( priv->rxHead * TLAN_MAX_FRAME_SIZE ); skb->dev = dev; skb_reserve( skb, 2 ); t = (void *) skb_put( skb, head_list->frameSize ); priv->stats.rx_bytes += head_list->frameSize; memcpy( t, head_buffer, head_list->frameSize ); skb->protocol = eth_type_trans( skb, dev ); netif_rx( skb ); } } else { struct sk_buff *new_skb; /* * I changed the algorithm here. What we now do * is allocate the new frame. If this fails we * simply recycle the frame. */ new_skb = dev_alloc_skb( TLAN_MAX_FRAME_SIZE + 7 ); if ( new_skb != NULL ) { /* If this ever happened it would be a problem */ /* not any more - ac */ skb = (struct sk_buff *) head_list->buffer[9].address; head_list->buffer[9].address = 0; skb_trim( skb, head_list->frameSize ); priv->stats.rx_bytes += head_list->frameSize; skb->protocol = eth_type_trans( skb, dev ); netif_rx( skb ); new_skb->dev = dev; skb_reserve( new_skb, 2 ); t = (void *) skb_put( new_skb, TLAN_MAX_FRAME_SIZE ); head_list->buffer[0].address = virt_to_bus( t ); head_list->buffer[9].address = (u32) new_skb; } else printk(KERN_WARNING "TLAN: Couldn't allocate memory for received data.\n" ); } head_list->forward = 0; head_list->frameSize = TLAN_MAX_FRAME_SIZE; head_list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER; tail_list->forward = virt_to_bus( head_list ); CIRC_INC( priv->rxHead, TLAN_NUM_RX_LISTS ); CIRC_INC( priv->rxTail, TLAN_NUM_RX_LISTS ); if ( eoc ) { TLAN_DBG( TLAN_DEBUG_RX, "RECEIVE: Handling RX EOC (Head=%d Tail=%d)\n", priv->rxHead, priv->rxTail ); head_list = priv->rxList + priv->rxHead; outl( virt_to_bus( head_list ), dev->base_addr + TLAN_CH_PARM ); ack |= TLAN_HC_GO | TLAN_HC_RT; priv->rxEocCount++; } if ( priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED ) { TLan_DioWrite8( dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT ); if ( priv->timer.function == NULL ) { priv->timer.function = &TLan_Timer; priv->timer.data = (unsigned long) dev; priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY; priv->timerSetAt = jiffies; priv->timerType = TLAN_TIMER_ACTIVITY; add_timer(&priv->timer); } else if ( priv->timerType == TLAN_TIMER_ACTIVITY ) { priv->timerSetAt = jiffies; } } dev->last_rx = jiffies; return ack; } /* TLan_HandleRxEOF */ /*************************************************************** * TLan_HandleDummy * * Returns: * 1 * Parms: * dev Device assigned the IRQ that was * raised. * host_int The contents of the HOST_INT * port. * * This function handles the Dummy interrupt, which is * raised whenever a test interrupt is generated by setting * the Req_Int bit of HOST_CMD to 1. * **************************************************************/ u32 TLan_HandleDummy( struct net_device *dev, u16 host_int ) { host_int = 0; printk( "TLAN: Test interrupt on %s.\n", dev->name ); return 1; } /* TLan_HandleDummy */ /*************************************************************** * TLan_HandleTxEOC * * Returns: * 1 * Parms: * dev Device assigned the IRQ that was * raised. * host_int The contents of the HOST_INT * port. * * This driver is structured to determine EOC occurances by * reading the CSTAT member of the list structure. Tx EOC * interrupts are disabled via the DIO INTDIS register. * However, TLAN chips before revision 3.0 didn't have this * functionality, so process EOC events if this is the * case. * **************************************************************/ u32 TLan_HandleTxEOC( struct net_device *dev, u16 host_int ) { TLanPrivateInfo *priv = (TLanPrivateInfo *) dev->priv; TLanList *head_list; u32 ack = 1; host_int = 0; if ( priv->tlanRev < 0x30 ) { TLAN_DBG( TLAN_DEBUG_TX, "TRANSMIT: Handling TX EOC (Head=%d Tail=%d) -- IRQ\n", priv->txHead, priv->txTail ); head_list = priv->txList + priv->txHead; if ( ( head_list->cStat & TLAN_CSTAT_READY ) == TLAN_CSTAT_READY ) { outl( virt_to_bus( head_list ), dev->base_addr + TLAN_CH_PARM ); ack |= TLAN_HC_GO; } else { priv->txInProgress = 0; } } return ack; } /* TLan_HandleTxEOC */ /*************************************************************** * TLan_HandleStatusCheck * * Returns: * 0 if Adapter check, 1 if Network Status check. * Parms: * dev Device assigned the IRQ that was * raised. * host_int The contents of the HOST_INT * port. * * This function handles Adapter Check/Network Status * interrupts generated by the adapter. It checks the * vector in the HOST_INT register to determine if it is * an Adapter Check interrupt. If so, it resets the * adapter. Otherwise it clears the status registers * and services the PHY. * **************************************************************/ u32 TLan_HandleStatusCheck( struct net_device *dev, u16 host_int ) { TLanPrivateInfo *priv = (TLanPrivateInfo *) dev->priv; u32 ack; u32 error; u8 net_sts; u32 phy; u16 tlphy_ctl; u16 tlphy_sts; ack = 1; if ( host_int & TLAN_HI_IV_MASK ) { error = inl( dev->base_addr + TLAN_CH_PARM ); printk( "TLAN: %s: Adaptor Error = 0x%x\n", dev->name, error ); TLan_ReadAndClearStats( dev, TLAN_RECORD ); outl( TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD ); TLan_FreeLists( dev ); TLan_ResetLists( dev ); TLan_ResetAdapter( dev ); netif_start_queue(dev); ack = 0; } else { TLAN_DBG( TLAN_DEBUG_GNRL, "%s: Status Check\n", dev->name ); phy = priv->phy[priv->phyNum]; net_sts = TLan_DioRead8( dev->base_addr, TLAN_NET_STS ); if ( net_sts ) { TLan_DioWrite8( dev->base_addr, TLAN_NET_STS, net_sts ); TLAN_DBG( TLAN_DEBUG_GNRL, "%s: Net_Sts = %x\n", dev->name, (unsigned) net_sts ); } if ( ( net_sts & TLAN_NET_STS_MIRQ ) && ( priv->phyNum == 0 ) ) { TLan_MiiReadReg( dev, phy, TLAN_TLPHY_STS, &tlphy_sts ); TLan_MiiReadReg( dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl ); if ( ! ( tlphy_sts & TLAN_TS_POLOK ) && ! ( tlphy_ctl & TLAN_TC_SWAPOL ) ) { tlphy_ctl |= TLAN_TC_SWAPOL; TLan_MiiWriteReg( dev, phy, TLAN_TLPHY_CTL, tlphy_ctl); } else if ( ( tlphy_sts & TLAN_TS_POLOK ) && ( tlphy_ctl & TLAN_TC_SWAPOL ) ) { tlphy_ctl &= ~TLAN_TC_SWAPOL; TLan_MiiWriteReg( dev, phy, TLAN_TLPHY_CTL, tlphy_ctl); } if (debug) { TLan_PhyPrint( dev ); } } } return ack; } /* TLan_HandleStatusCheck */ /*************************************************************** * TLan_HandleRxEOC * * Returns: * 1 * Parms: * dev Device assigned the IRQ that was * raised. * host_int The contents of the HOST_INT * port. * * This driver is structured to determine EOC occurances by * reading the CSTAT member of the list structure. Rx EOC * interrupts are disabled via the DIO INTDIS register. * However, TLAN chips before revision 3.0 didn't have this * CSTAT member or a INTDIS register, so if this chip is * pre-3.0, process EOC interrupts normally. * **************************************************************/ u32 TLan_HandleRxEOC( struct net_device *dev, u16 host_int ) { TLanPrivateInfo *priv = (TLanPrivateInfo *) dev->priv; TLanList *head_list; u32 ack = 1; host_int = 0; if ( priv->tlanRev < 0x30 ) { TLAN_DBG( TLAN_DEBUG_RX, "RECEIVE: Handling RX EOC (Head=%d Tail=%d) -- IRQ\n", priv->rxHead, priv->rxTail ); head_list = priv->rxList + priv->rxHead; outl( virt_to_bus( head_list ), dev->base_addr + TLAN_CH_PARM ); ack |= TLAN_HC_GO | TLAN_HC_RT; priv->rxEocCount++; } return ack; } /* TLan_HandleRxEOC */ /***************************************************************************** ****************************************************************************** ThunderLAN Driver Timer Function ****************************************************************************** *****************************************************************************/ /*************************************************************** * TLan_Timer * * Returns: * Nothing * Parms: * data A value given to add timer when * add_timer was called. * * This function handles timed functionality for the * TLAN driver. The two current timer uses are for * delaying for autonegotionation and driving the ACT LED. * - Autonegotiation requires being allowed about * 2 1/2 seconds before attempting to transmit a * packet. It would be a very bad thing to hang * the kernel this long, so the driver doesn't * allow transmission 'til after this time, for * certain PHYs. It would be much nicer if all * PHYs were interrupt-capable like the internal * PHY. * - The ACT LED, which shows adapter activity, is * driven by the driver, and so must be left on * for a short period to power up the LED so it * can be seen. This delay can be changed by * changing the TLAN_TIMER_ACT_DELAY in tlan.h, * if desired. 100 ms produces a slightly * sluggish response. * **************************************************************/ void TLan_Timer( unsigned long data ) { struct net_device *dev = (struct net_device *) data; TLanPrivateInfo *priv = (TLanPrivateInfo *) dev->priv; u32 elapsed; unsigned long flags = 0; priv->timer.function = NULL; switch ( priv->timerType ) { #ifdef MONITOR case TLAN_TIMER_LINK_BEAT: TLan_PhyMonitor( dev ); break; #endif case TLAN_TIMER_PHY_PDOWN: TLan_PhyPowerDown( dev ); break; case TLAN_TIMER_PHY_PUP: TLan_PhyPowerUp( dev ); break; case TLAN_TIMER_PHY_RESET: TLan_PhyReset( dev ); break; case TLAN_TIMER_PHY_START_LINK: TLan_PhyStartLink( dev ); break; case TLAN_TIMER_PHY_FINISH_AN: TLan_PhyFinishAutoNeg( dev ); break; case TLAN_TIMER_FINISH_RESET: TLan_FinishReset( dev ); break; case TLAN_TIMER_ACTIVITY: spin_lock_irqsave(&priv->lock, flags); if ( priv->timer.function == NULL ) { elapsed = jiffies - priv->timerSetAt; if ( elapsed >= TLAN_TIMER_ACT_DELAY ) { TLan_DioWrite8( dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK ); } else { priv->timer.function = &TLan_Timer; priv->timer.expires = priv->timerSetAt + TLAN_TIMER_ACT_DELAY; spin_unlock_irqrestore(&priv->lock, flags); add_timer( &priv->timer ); break; } } spin_unlock_irqrestore(&priv->lock, flags); break; default: break; } } /* TLan_Timer */ /***************************************************************************** ****************************************************************************** ThunderLAN Driver Adapter Related Routines ****************************************************************************** *****************************************************************************/ /*************************************************************** * TLan_ResetLists * * Returns: * Nothing * Parms: * dev The device structure with the list * stuctures to be reset. * * This routine sets the variables associated with managing * the TLAN lists to their initial values. * **************************************************************/ void TLan_ResetLists( struct net_device *dev ) { TLanPrivateInfo *priv = (TLanPrivateInfo *) dev->priv; int i; TLanList *list; struct sk_buff *skb; void *t = NULL; priv->txHead = 0; priv->txTail = 0; for ( i = 0; i < TLAN_NUM_TX_LISTS; i++ ) { list = priv->txList + i; list->cStat = TLAN_CSTAT_UNUSED; if ( bbuf ) { list->buffer[0].address = virt_to_bus( priv->txBuffer + ( i * TLAN_MAX_FRAME_SIZE ) ); } else { list->buffer[0].address = 0; } list->buffer[2].count = 0; list->buffer[2].address = 0; } priv->rxHead = 0; priv->rxTail = TLAN_NUM_RX_LISTS - 1; for ( i = 0; i < TLAN_NUM_RX_LISTS; i++ ) { list = priv->rxList + i; list->cStat = TLAN_CSTAT_READY; list->frameSize = TLAN_MAX_FRAME_SIZE; list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER; if ( bbuf ) { list->buffer[0].address = virt_to_bus( priv->rxBuffer + ( i * TLAN_MAX_FRAME_SIZE ) ); } else { skb = dev_alloc_skb( TLAN_MAX_FRAME_SIZE + 7 ); if ( skb == NULL ) { printk( "TLAN: Couldn't allocate memory for received data.\n" ); /* If this ever happened it would be a problem */ } else { skb->dev = dev; skb_reserve( skb, 2 ); t = (void *) skb_put( skb, TLAN_MAX_FRAME_SIZE ); } list->buffer[0].address = virt_to_bus( t ); list->buffer[9].address = (u32) skb; } list->buffer[1].count = 0; list->buffer[1].address = 0; if ( i < TLAN_NUM_RX_LISTS - 1 ) list->forward = virt_to_bus( list + 1 ); else list->forward = 0; } } /* TLan_ResetLists */ void TLan_FreeLists( struct net_device *dev ) { TLanPrivateInfo *priv = (TLanPrivateInfo *) dev->priv; int i; TLanList *list; struct sk_buff *skb; if ( ! bbuf ) { for ( i = 0; i < TLAN_NUM_TX_LISTS; i++ ) { list = priv->txList + i; skb = (struct sk_buff *) list->buffer[9].address; if ( skb ) { dev_kfree_skb_any( skb ); list->buffer[9].address = 0; } } for ( i = 0; i < TLAN_NUM_RX_LISTS; i++ ) { list = priv->rxList + i; skb = (struct sk_buff *) list->buffer[9].address; if ( skb ) { dev_kfree_skb_any( skb ); list->buffer[9].address = 0; } } } } /* TLan_FreeLists */ /*************************************************************** * TLan_PrintDio * * Returns: * Nothing * Parms: * io_base Base IO port of the device of * which to print DIO registers. * * This function prints out all the the internal (DIO) * registers of a TLAN chip. * **************************************************************/ void TLan_PrintDio( u16 io_base ) { u32 data0, data1; int i; printk( "TLAN: Contents of internal registers for io base 0x%04hx.\n", io_base ); printk( "TLAN: Off. +0 +4\n" ); for ( i = 0; i < 0x4C; i+= 8 ) { data0 = TLan_DioRead32( io_base, i ); data1 = TLan_DioRead32( io_base, i + 0x4 ); printk( "TLAN: 0x%02x 0x%08x 0x%08x\n", i, data0, data1 ); } } /* TLan_PrintDio */ /*************************************************************** * TLan_PrintList * * Returns: * Nothing * Parms: * list A pointer to the TLanList structure to * be printed. * type A string to designate type of list, * "Rx" or "Tx". * num The index of the list. * * This function prints out the contents of the list * pointed to by the list parameter. * **************************************************************/ void TLan_PrintList( TLanList *list, char *type, int num) { int i; printk( "TLAN: %s List %d at 0x%08x\n", type, num, (u32) list ); printk( "TLAN: Forward = 0x%08x\n", list->forward ); printk( "TLAN: CSTAT = 0x%04hx\n", list->cStat ); printk( "TLAN: Frame Size = 0x%04hx\n", list->frameSize ); /* for ( i = 0; i < 10; i++ ) { */ for ( i = 0; i < 2; i++ ) { printk( "TLAN: Buffer[%d].count, addr = 0x%08x, 0x%08x\n", i, list->buffer[i].count, list->buffer[i].address ); } } /* TLan_PrintList */ /*************************************************************** * TLan_ReadAndClearStats * * Returns: * Nothing * Parms: * dev Pointer to device structure of adapter * to which to read stats. * record Flag indicating whether to add * * This functions reads all the internal status registers * of the TLAN chip, which clears them as a side effect. * It then either adds the values to the device's status * struct, or discards them, depending on whether record * is TLAN_RECORD (!=0) or TLAN_IGNORE (==0). * **************************************************************/ void TLan_ReadAndClearStats( struct net_device *dev, int record ) { TLanPrivateInfo *priv = (TLanPrivateInfo *) dev->priv; u32 tx_good, tx_under; u32 rx_good, rx_over; u32 def_tx, crc, code; u32 multi_col, single_col; u32 excess_col, late_col, loss; outw( TLAN_GOOD_TX_FRMS, dev->base_addr + TLAN_DIO_ADR ); tx_good = inb( dev->base_addr + TLAN_DIO_DATA ); tx_good += inb( dev->base_addr + TLAN_DIO_DATA + 1 ) << 8; tx_good += inb( dev->base_addr + TLAN_DIO_DATA + 2 ) << 16; tx_under = inb( dev->base_addr + TLAN_DIO_DATA + 3 ); outw( TLAN_GOOD_RX_FRMS, dev->base_addr + TLAN_DIO_ADR ); rx_good = inb( dev->base_addr + TLAN_DIO_DATA ); rx_good += inb( dev->base_addr + TLAN_DIO_DATA + 1 ) << 8; rx_good += inb( dev->base_addr + TLAN_DIO_DATA + 2 ) << 16; rx_over = inb( dev->base_addr + TLAN_DIO_DATA + 3 ); outw( TLAN_DEFERRED_TX, dev->base_addr + TLAN_DIO_ADR ); def_tx = inb( dev->base_addr + TLAN_DIO_DATA ); def_tx += inb( dev->base_addr + TLAN_DIO_DATA + 1 ) << 8; crc = inb( dev->base_addr + TLAN_DIO_DATA + 2 ); code = inb( dev->base_addr + TLAN_DIO_DATA + 3 ); outw( TLAN_MULTICOL_FRMS, dev->base_addr + TLAN_DIO_ADR ); multi_col = inb( dev->base_addr + TLAN_DIO_DATA ); multi_col += inb( dev->base_addr + TLAN_DIO_DATA + 1 ) << 8; single_col = inb( dev->base_addr + TLAN_DIO_DATA + 2 ); single_col += inb( dev->base_addr + TLAN_DIO_DATA + 3 ) << 8; outw( TLAN_EXCESSCOL_FRMS, dev->base_addr + TLAN_DIO_ADR ); excess_col = inb( dev->base_addr + TLAN_DIO_DATA ); late_col = inb( dev->base_addr + TLAN_DIO_DATA + 1 ); loss = inb( dev->base_addr + TLAN_DIO_DATA + 2 ); if ( record ) { priv->stats.rx_packets += rx_good; priv->stats.rx_errors += rx_over + crc + code; priv->stats.tx_packets += tx_good; priv->stats.tx_errors += tx_under + loss; priv->stats.collisions += multi_col + single_col + excess_col + late_col; priv->stats.rx_over_errors += rx_over; priv->stats.rx_crc_errors += crc; priv->stats.rx_frame_errors += code; priv->stats.tx_aborted_errors += tx_under; priv->stats.tx_carrier_errors += loss; } } /* TLan_ReadAndClearStats */ /*************************************************************** * TLan_Reset * * Returns: * 0 * Parms: * dev Pointer to device structure of adapter * to be reset. * * This function resets the adapter and it's physical * device. See Chap. 3, pp. 9-10 of the "ThunderLAN * Programmer's Guide" for details. The routine tries to * implement what is detailed there, though adjustments * have been made. * **************************************************************/ void TLan_ResetAdapter( struct net_device *dev ) { TLanPrivateInfo *priv = (TLanPrivateInfo *) dev->priv; int i; u32 addr; u32 data; u8 data8; priv->tlanFullDuplex = FALSE; priv->phyOnline=0; /* 1. Assert reset bit. */ data = inl(dev->base_addr + TLAN_HOST_CMD); data |= TLAN_HC_AD_RST; outl(data, dev->base_addr + TLAN_HOST_CMD); udelay(1000); /* 2. Turn off interrupts. ( Probably isn't necessary ) */ data = inl(dev->base_addr + TLAN_HOST_CMD); data |= TLAN_HC_INT_OFF; outl(data, dev->base_addr + TLAN_HOST_CMD); /* 3. Clear AREGs and HASHs. */ for ( i = TLAN_AREG_0; i <= TLAN_HASH_2; i += 4 ) { TLan_DioWrite32( dev->base_addr, (u16) i, 0 ); } /* 4. Setup NetConfig register. */ data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN; TLan_DioWrite16( dev->base_addr, TLAN_NET_CONFIG, (u16) data ); /* 5. Load Ld_Tmr and Ld_Thr in HOST_CMD. */ outl( TLAN_HC_LD_TMR | 0x0, dev->base_addr + TLAN_HOST_CMD ); outl( TLAN_HC_LD_THR | 0x1, dev->base_addr + TLAN_HOST_CMD ); /* 6. Unreset the MII by setting NMRST (in NetSio) to 1. */ outw( TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR ); addr = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO; TLan_SetBit( TLAN_NET_SIO_NMRST, addr ); /* 7. Setup the remaining registers. */ if ( priv->tlanRev >= 0x30 ) { data8 = TLAN_ID_TX_EOC | TLAN_ID_RX_EOC; TLan_DioWrite8( dev->base_addr, TLAN_INT_DIS, data8 ); } TLan_PhyDetect( dev ); data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN; if ( priv->adapter->flags & TLAN_ADAPTER_BIT_RATE_PHY ) { data |= TLAN_NET_CFG_BIT; if ( priv->aui == 1 ) { TLan_DioWrite8( dev->base_addr, TLAN_ACOMMIT, 0x0a ); } else if ( priv->duplex == TLAN_DUPLEX_FULL ) { TLan_DioWrite8( dev->base_addr, TLAN_ACOMMIT, 0x00 ); priv->tlanFullDuplex = TRUE; } else { TLan_DioWrite8( dev->base_addr, TLAN_ACOMMIT, 0x08 ); } } if ( priv->phyNum == 0 ) { data |= TLAN_NET_CFG_PHY_EN; } TLan_DioWrite16( dev->base_addr, TLAN_NET_CONFIG, (u16) data ); if ( priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY ) { TLan_FinishReset( dev ); } else { TLan_PhyPowerDown( dev ); } } /* TLan_ResetAdapter */ void TLan_FinishReset( struct net_device *dev ) { TLanPrivateInfo *priv = (TLanPrivateInfo *) dev->priv; u8 data; u32 phy; u8 sio; u16 status; u16 partner; u16 tlphy_ctl; u16 tlphy_par; u16 tlphy_id1, tlphy_id2; int i; phy = priv->phy[priv->phyNum]; data = TLAN_NET_CMD_NRESET | TLAN_NET_CMD_NWRAP; if ( priv->tlanFullDuplex ) { data |= TLAN_NET_CMD_DUPLEX; } TLan_DioWrite8( dev->base_addr, TLAN_NET_CMD, data ); data = TLAN_NET_MASK_MASK4 | TLAN_NET_MASK_MASK5; if ( priv->phyNum == 0 ) { data |= TLAN_NET_MASK_MASK7; } TLan_DioWrite8( dev->base_addr, TLAN_NET_MASK, data ); TLan_DioWrite16( dev->base_addr, TLAN_MAX_RX, TLAN_MAX_FRAME_SIZE ); TLan_MiiReadReg( dev, phy, MII_GEN_ID_HI, &tlphy_id1 ); TLan_MiiReadReg( dev, phy, MII_GEN_ID_LO, &tlphy_id2 ); if ( ( priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY ) || ( priv->aui ) ) { status = MII_GS_LINK; printk( "TLAN: %s: Link forced.\n", dev->name ); } else { TLan_MiiReadReg( dev, phy, MII_GEN_STS, &status ); udelay( 1000 ); TLan_MiiReadReg( dev, phy, MII_GEN_STS, &status ); if ( (status & MII_GS_LINK) && /* We only support link info on Nat.Sem. PHY's */ (tlphy_id1 == NAT_SEM_ID1) && (tlphy_id2 == NAT_SEM_ID2) ) { TLan_MiiReadReg( dev, phy, MII_AN_LPA, &partner ); TLan_MiiReadReg( dev, phy, TLAN_TLPHY_PAR, &tlphy_par ); printk( "TLAN: %s: Link active with ", dev->name ); if (!(tlphy_par & TLAN_PHY_AN_EN_STAT)) { printk( "forced 10%sMbps %s-Duplex\n", tlphy_par & TLAN_PHY_SPEED_100 ? "" : "0", tlphy_par & TLAN_PHY_DUPLEX_FULL ? "Full" : "Half"); } else { printk( "AutoNegotiation enabled, at 10%sMbps %s-Duplex\n", tlphy_par & TLAN_PHY_SPEED_100 ? "" : "0", tlphy_par & TLAN_PHY_DUPLEX_FULL ? "Full" : "Half"); printk("TLAN: Partner capability: "); for (i = 5; i <= 10; i++) if (partner & (1<base_addr, TLAN_LED_REG, TLAN_LED_LINK ); #ifdef MONITOR /* We have link beat..for now anyway */ priv->link = 1; /*Enabling link beat monitoring */ TLan_SetTimer( dev, (10*HZ), TLAN_TIMER_LINK_BEAT ); #endif } else if (status & MII_GS_LINK) { printk( "TLAN: %s: Link active\n", dev->name ); TLan_DioWrite8( dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK ); } } if ( priv->phyNum == 0 ) { TLan_MiiReadReg( dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl ); tlphy_ctl |= TLAN_TC_INTEN; TLan_MiiWriteReg( dev, phy, TLAN_TLPHY_CTL, tlphy_ctl ); sio = TLan_DioRead8( dev->base_addr, TLAN_NET_SIO ); sio |= TLAN_NET_SIO_MINTEN; TLan_DioWrite8( dev->base_addr, TLAN_NET_SIO, sio ); } if ( status & MII_GS_LINK ) { TLan_SetMac( dev, 0, dev->dev_addr ); priv->phyOnline = 1; outb( ( TLAN_HC_INT_ON >> 8 ), dev->base_addr + TLAN_HOST_CMD + 1 ); if ( debug >= 1 && debug != TLAN_DEBUG_PROBE ) { outb( ( TLAN_HC_REQ_INT >> 8 ), dev->base_addr + TLAN_HOST_CMD + 1 ); } outl( virt_to_bus( priv->rxList ), dev->base_addr + TLAN_CH_PARM ); outl( TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD ); } else { printk( "TLAN: %s: Link inactive, will retry in 10 secs...\n", dev->name ); TLan_SetTimer( dev, (10*HZ), TLAN_TIMER_FINISH_RESET ); return; } } /* TLan_FinishReset */ /*************************************************************** * TLan_SetMac * * Returns: * Nothing * Parms: * dev Pointer to device structure of adapter * on which to change the AREG. * areg The AREG to set the address in (0 - 3). * mac A pointer to an array of chars. Each * element stores one byte of the address. * IE, it isn't in ascii. * * This function transfers a MAC address to one of the * TLAN AREGs (address registers). The TLAN chip locks * the register on writing to offset 0 and unlocks the * register after writing to offset 5. If NULL is passed * in mac, then the AREG is filled with 0's. * **************************************************************/ void TLan_SetMac( struct net_device *dev, int areg, char *mac ) { int i; areg *= 6; if ( mac != NULL ) { for ( i = 0; i < 6; i++ ) TLan_DioWrite8( dev->base_addr, TLAN_AREG_0 + areg + i, mac[i] ); } else { for ( i = 0; i < 6; i++ ) TLan_DioWrite8( dev->base_addr, TLAN_AREG_0 + areg + i, 0 ); } } /* TLan_SetMac */ /***************************************************************************** ****************************************************************************** ThunderLAN Driver PHY Layer Routines ****************************************************************************** *****************************************************************************/ /********************************************************************* * TLan_PhyPrint * * Returns: * Nothing * Parms: * dev A pointer to the device structure of the * TLAN device having the PHYs to be detailed. * * This function prints the registers a PHY (aka tranceiver). * ********************************************************************/ void TLan_PhyPrint( struct net_device *dev ) { TLanPrivateInfo *priv = (TLanPrivateInfo *) dev->priv; u16 i, data0, data1, data2, data3, phy; phy = priv->phy[priv->phyNum]; if ( priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY ) { printk( "TLAN: Device %s, Unmanaged PHY.\n", dev->name ); } else if ( phy <= TLAN_PHY_MAX_ADDR ) { printk( "TLAN: Device %s, PHY 0x%02x.\n", dev->name, phy ); printk( "TLAN: Off. +0 +1 +2 +3 \n" ); for ( i = 0; i < 0x20; i+= 4 ) { printk( "TLAN: 0x%02x", i ); TLan_MiiReadReg( dev, phy, i, &data0 ); printk( " 0x%04hx", data0 ); TLan_MiiReadReg( dev, phy, i + 1, &data1 ); printk( " 0x%04hx", data1 ); TLan_MiiReadReg( dev, phy, i + 2, &data2 ); printk( " 0x%04hx", data2 ); TLan_MiiReadReg( dev, phy, i + 3, &data3 ); printk( " 0x%04hx\n", data3 ); } } else { printk( "TLAN: Device %s, Invalid PHY.\n", dev->name ); } } /* TLan_PhyPrint */ /********************************************************************* * TLan_PhyDetect * * Returns: * Nothing * Parms: * dev A pointer to the device structure of the adapter * for which the PHY needs determined. * * So far I've found that adapters which have external PHYs * may also use the internal PHY for part of the functionality. * (eg, AUI/Thinnet). This function finds out if this TLAN * chip has an internal PHY, and then finds the first external * PHY (starting from address 0) if it exists). * ********************************************************************/ void TLan_PhyDetect( struct net_device *dev ) { TLanPrivateInfo *priv = (TLanPrivateInfo *) dev->priv; u16 control; u16 hi; u16 lo; u32 phy; if ( priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY ) { priv->phyNum = 0xFFFF; return; } TLan_MiiReadReg( dev, TLAN_PHY_MAX_ADDR, MII_GEN_ID_HI, &hi ); if ( hi != 0xFFFF ) { priv->phy[0] = TLAN_PHY_MAX_ADDR; } else { priv->phy[0] = TLAN_PHY_NONE; } priv->phy[1] = TLAN_PHY_NONE; for ( phy = 0; phy <= TLAN_PHY_MAX_ADDR; phy++ ) { TLan_MiiReadReg( dev, phy, MII_GEN_CTL, &control ); TLan_MiiReadReg( dev, phy, MII_GEN_ID_HI, &hi ); TLan_MiiReadReg( dev, phy, MII_GEN_ID_LO, &lo ); if ( ( control != 0xFFFF ) || ( hi != 0xFFFF ) || ( lo != 0xFFFF ) ) { TLAN_DBG( TLAN_DEBUG_GNRL, "PHY found at %02x %04x %04x %04x\n", phy, control, hi, lo ); if ( ( priv->phy[1] == TLAN_PHY_NONE ) && ( phy != TLAN_PHY_MAX_ADDR ) ) { priv->phy[1] = phy; } } } if ( priv->phy[1] != TLAN_PHY_NONE ) { priv->phyNum = 1; } else if ( priv->phy[0] != TLAN_PHY_NONE ) { priv->phyNum = 0; } else { printk( "TLAN: Cannot initialize device, no PHY was found!\n" ); } } /* TLan_PhyDetect */ void TLan_PhyPowerDown( struct net_device *dev ) { TLanPrivateInfo *priv = (TLanPrivateInfo *) dev->priv; u16 value; TLAN_DBG( TLAN_DEBUG_GNRL, "%s: Powering down PHY(s).\n", dev->name ); value = MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE; TLan_MiiSync( dev->base_addr ); TLan_MiiWriteReg( dev, priv->phy[priv->phyNum], MII_GEN_CTL, value ); if ( ( priv->phyNum == 0 ) && ( priv->phy[1] != TLAN_PHY_NONE ) && ( ! ( priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10 ) ) ) { TLan_MiiSync( dev->base_addr ); TLan_MiiWriteReg( dev, priv->phy[1], MII_GEN_CTL, value ); } /* Wait for 50 ms and powerup * This is abitrary. It is intended to make sure the * tranceiver settles. */ TLan_SetTimer( dev, (HZ/20), TLAN_TIMER_PHY_PUP ); } /* TLan_PhyPowerDown */ void TLan_PhyPowerUp( struct net_device *dev ) { TLanPrivateInfo *priv = (TLanPrivateInfo *) dev->priv; u16 value; TLAN_DBG( TLAN_DEBUG_GNRL, "%s: Powering up PHY.\n", dev->name ); TLan_MiiSync( dev->base_addr ); value = MII_GC_LOOPBK; TLan_MiiWriteReg( dev, priv->phy[priv->phyNum], MII_GEN_CTL, value ); TLan_MiiSync(dev->base_addr); /* Wait for 500 ms and reset the * tranceiver. The TLAN docs say both 50 ms and * 500 ms, so do the longer, just in case. */ TLan_SetTimer( dev, (HZ/20), TLAN_TIMER_PHY_RESET ); } /* TLan_PhyPowerUp */ void TLan_PhyReset( struct net_device *dev ) { TLanPrivateInfo *priv = (TLanPrivateInfo *) dev->priv; u16 phy; u16 value; phy = priv->phy[priv->phyNum]; TLAN_DBG( TLAN_DEBUG_GNRL, "%s: Reseting PHY.\n", dev->name ); TLan_MiiSync( dev->base_addr ); value = MII_GC_LOOPBK | MII_GC_RESET; TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, value ); TLan_MiiReadReg( dev, phy, MII_GEN_CTL, &value ); while ( value & MII_GC_RESET ) { TLan_MiiReadReg( dev, phy, MII_GEN_CTL, &value ); } /* Wait for 500 ms and initialize. * I don't remember why I wait this long. * I've changed this to 50ms, as it seems long enough. */ TLan_SetTimer( dev, (HZ/20), TLAN_TIMER_PHY_START_LINK ); } /* TLan_PhyReset */ void TLan_PhyStartLink( struct net_device *dev ) { TLanPrivateInfo *priv = (TLanPrivateInfo *) dev->priv; u16 ability; u16 control; u16 data; u16 phy; u16 status; u16 tctl; phy = priv->phy[priv->phyNum]; TLAN_DBG( TLAN_DEBUG_GNRL, "%s: Trying to activate link.\n", dev->name ); TLan_MiiReadReg( dev, phy, MII_GEN_STS, &status ); TLan_MiiReadReg( dev, phy, MII_GEN_STS, &ability ); if ( ( status & MII_GS_AUTONEG ) && ( ! priv->aui ) ) { ability = status >> 11; if ( priv->speed == TLAN_SPEED_10 && priv->duplex == TLAN_DUPLEX_HALF) { TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, 0x0000); } else if ( priv->speed == TLAN_SPEED_10 && priv->duplex == TLAN_DUPLEX_FULL) { priv->tlanFullDuplex = TRUE; TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, 0x0100); } else if ( priv->speed == TLAN_SPEED_100 && priv->duplex == TLAN_DUPLEX_HALF) { TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, 0x2000); } else if ( priv->speed == TLAN_SPEED_100 && priv->duplex == TLAN_DUPLEX_FULL) { priv->tlanFullDuplex = TRUE; TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, 0x2100); } else { /* Set Auto-Neg advertisement */ TLan_MiiWriteReg( dev, phy, MII_AN_ADV, (ability << 5) | 1); /* Enablee Auto-Neg */ TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, 0x1000 ); /* Restart Auto-Neg */ TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, 0x1200 ); /* Wait for 4 sec for autonegotiation * to complete. The max spec time is less than this * but the card need additional time to start AN. * .5 sec should be plenty extra. */ printk( "TLAN: %s: Starting autonegotiation.\n", dev->name ); TLan_SetTimer( dev, (2*HZ), TLAN_TIMER_PHY_FINISH_AN ); return; } } if ( ( priv->aui ) && ( priv->phyNum != 0 ) ) { priv->phyNum = 0; data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN; TLan_DioWrite16( dev->base_addr, TLAN_NET_CONFIG, data ); TLan_SetTimer( dev, (40*HZ/1000), TLAN_TIMER_PHY_PDOWN ); return; } else if ( priv->phyNum == 0 ) { TLan_MiiReadReg( dev, phy, TLAN_TLPHY_CTL, &tctl ); if ( priv->aui ) { tctl |= TLAN_TC_AUISEL; } else { tctl &= ~TLAN_TC_AUISEL; control = 0; if ( priv->duplex == TLAN_DUPLEX_FULL ) { control |= MII_GC_DUPLEX; priv->tlanFullDuplex = TRUE; } if ( priv->speed == TLAN_SPEED_100 ) { control |= MII_GC_SPEEDSEL; } TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, control ); } TLan_MiiWriteReg( dev, phy, TLAN_TLPHY_CTL, tctl ); } /* Wait for 2 sec to give the tranceiver time * to establish link. */ TLan_SetTimer( dev, (4*HZ), TLAN_TIMER_FINISH_RESET ); } /* TLan_PhyStartLink */ void TLan_PhyFinishAutoNeg( struct net_device *dev ) { TLanPrivateInfo *priv = (TLanPrivateInfo *) dev->priv; u16 an_adv; u16 an_lpa; u16 data; u16 mode; u16 phy; u16 status; phy = priv->phy[priv->phyNum]; TLan_MiiReadReg( dev, phy, MII_GEN_STS, &status ); udelay( 1000 ); TLan_MiiReadReg( dev, phy, MII_GEN_STS, &status ); if ( ! ( status & MII_GS_AUTOCMPLT ) ) { /* Wait for 8 sec to give the process * more time. Perhaps we should fail after a while. */ printk( "TLAN: Giving autonegotiation more time.\n" ); TLan_SetTimer( dev, (8*HZ), TLAN_TIMER_PHY_FINISH_AN ); return; } printk( "TLAN: %s: Autonegotiation complete.\n", dev->name ); TLan_MiiReadReg( dev, phy, MII_AN_ADV, &an_adv ); TLan_MiiReadReg( dev, phy, MII_AN_LPA, &an_lpa ); mode = an_adv & an_lpa & 0x03E0; if ( mode & 0x0100 ) { priv->tlanFullDuplex = TRUE; } else if ( ! ( mode & 0x0080 ) && ( mode & 0x0040 ) ) { priv->tlanFullDuplex = TRUE; } if ( ( ! ( mode & 0x0180 ) ) && ( priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10 ) && ( priv->phyNum != 0 ) ) { priv->phyNum = 0; data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN; TLan_DioWrite16( dev->base_addr, TLAN_NET_CONFIG, data ); TLan_SetTimer( dev, (400*HZ/1000), TLAN_TIMER_PHY_PDOWN ); return; } if ( priv->phyNum == 0 ) { if ( ( priv->duplex == TLAN_DUPLEX_FULL ) || ( an_adv & an_lpa & 0x0040 ) ) { TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, MII_GC_AUTOENB | MII_GC_DUPLEX ); printk( "TLAN: Starting internal PHY with FULL-DUPLEX\n" ); } else { TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, MII_GC_AUTOENB ); printk( "TLAN: Starting internal PHY with HALF-DUPLEX\n" ); } } /* Wait for 100 ms. No reason in partiticular. */ TLan_SetTimer( dev, (HZ/10), TLAN_TIMER_FINISH_RESET ); } /* TLan_PhyFinishAutoNeg */ #ifdef MONITOR /********************************************************************* * * TLan_phyMonitor * * Returns: * None * * Params: * dev The device structure of this device. * * * This function monitors PHY condition by reading the status * register via the MII bus. This can be used to give info * about link changes (up/down), and possible switch to alternate * media. * * ******************************************************************/ void TLan_PhyMonitor( struct net_device *dev ) { TLanPrivateInfo *priv = (TLanPrivateInfo *) dev->priv; u16 phy; u16 phy_status; phy = priv->phy[priv->phyNum]; /* Get PHY status register */ TLan_MiiReadReg( dev, phy, MII_GEN_STS, &phy_status ); /* Check if link has been lost */ if (!(phy_status & MII_GS_LINK)) { if (priv->link) { priv->link = 0; printk(KERN_DEBUG "TLAN: %s has lost link\n", dev->name); dev->flags &= ~IFF_RUNNING; TLan_SetTimer( dev, (2*HZ), TLAN_TIMER_LINK_BEAT ); return; } } /* Link restablished? */ if ((phy_status & MII_GS_LINK) && !priv->link) { priv->link = 1; printk(KERN_DEBUG "TLAN: %s has reestablished link\n", dev->name); dev->flags |= IFF_RUNNING; } /* Setup a new monitor */ TLan_SetTimer( dev, (2*HZ), TLAN_TIMER_LINK_BEAT ); } #endif /* MONITOR */ /***************************************************************************** ****************************************************************************** ThunderLAN Driver MII Routines These routines are based on the information in Chap. 2 of the "ThunderLAN Programmer's Guide", pp. 15-24. ****************************************************************************** *****************************************************************************/ /*************************************************************** * TLan_MiiReadReg * * Returns: * 0 if ack received ok * 1 otherwise. * * Parms: * dev The device structure containing * The io address and interrupt count * for this device. * phy The address of the PHY to be queried. * reg The register whose contents are to be * retreived. * val A pointer to a variable to store the * retrieved value. * * This function uses the TLAN's MII bus to retreive the contents * of a given register on a PHY. It sends the appropriate info * and then reads the 16-bit register value from the MII bus via * the TLAN SIO register. * **************************************************************/ int TLan_MiiReadReg( struct net_device *dev, u16 phy, u16 reg, u16 *val ) { u8 nack; u16 sio, tmp; u32 i; int err; int minten; TLanPrivateInfo *priv = (TLanPrivateInfo *) dev->priv; unsigned long flags = 0; err = FALSE; outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR); sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO; spin_lock_irqsave(&priv->lock, flags); TLan_MiiSync(dev->base_addr); minten = TLan_GetBit( TLAN_NET_SIO_MINTEN, sio ); if ( minten ) TLan_ClearBit(TLAN_NET_SIO_MINTEN, sio); TLan_MiiSendData( dev->base_addr, 0x1, 2 ); /* Start ( 01b ) */ TLan_MiiSendData( dev->base_addr, 0x2, 2 ); /* Read ( 10b ) */ TLan_MiiSendData( dev->base_addr, phy, 5 ); /* Device # */ TLan_MiiSendData( dev->base_addr, reg, 5 ); /* Register # */ TLan_ClearBit(TLAN_NET_SIO_MTXEN, sio); /* Change direction */ TLan_ClearBit(TLAN_NET_SIO_MCLK, sio); /* Clock Idle bit */ TLan_SetBit(TLAN_NET_SIO_MCLK, sio); TLan_ClearBit(TLAN_NET_SIO_MCLK, sio); /* Wait 300ns */ nack = TLan_GetBit(TLAN_NET_SIO_MDATA, sio); /* Check for ACK */ TLan_SetBit(TLAN_NET_SIO_MCLK, sio); /* Finish ACK */ if (nack) { /* No ACK, so fake it */ for (i = 0; i < 16; i++) { TLan_ClearBit(TLAN_NET_SIO_MCLK, sio); TLan_SetBit(TLAN_NET_SIO_MCLK, sio); } tmp = 0xffff; err = TRUE; } else { /* ACK, so read data */ for (tmp = 0, i = 0x8000; i; i >>= 1) { TLan_ClearBit(TLAN_NET_SIO_MCLK, sio); if (TLan_GetBit(TLAN_NET_SIO_MDATA, sio)) tmp |= i; TLan_SetBit(TLAN_NET_SIO_MCLK, sio); } } TLan_ClearBit(TLAN_NET_SIO_MCLK, sio); /* Idle cycle */ TLan_SetBit(TLAN_NET_SIO_MCLK, sio); if ( minten ) TLan_SetBit(TLAN_NET_SIO_MINTEN, sio); *val = tmp; spin_unlock_irqrestore(&priv->lock, flags); return err; } /* TLan_MiiReadReg */ /*************************************************************** * TLan_MiiSendData * * Returns: * Nothing * Parms: * base_port The base IO port of the adapter in * question. * dev The address of the PHY to be queried. * data The value to be placed on the MII bus. * num_bits The number of bits in data that are to * be placed on the MII bus. * * This function sends on sequence of bits on the MII * configuration bus. * **************************************************************/ void TLan_MiiSendData( u16 base_port, u32 data, unsigned num_bits ) { u16 sio; u32 i; if ( num_bits == 0 ) return; outw( TLAN_NET_SIO, base_port + TLAN_DIO_ADR ); sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO; TLan_SetBit( TLAN_NET_SIO_MTXEN, sio ); for ( i = ( 0x1 << ( num_bits - 1 ) ); i; i >>= 1 ) { TLan_ClearBit( TLAN_NET_SIO_MCLK, sio ); (void) TLan_GetBit( TLAN_NET_SIO_MCLK, sio ); if ( data & i ) TLan_SetBit( TLAN_NET_SIO_MDATA, sio ); else TLan_ClearBit( TLAN_NET_SIO_MDATA, sio ); TLan_SetBit( TLAN_NET_SIO_MCLK, sio ); (void) TLan_GetBit( TLAN_NET_SIO_MCLK, sio ); } } /* TLan_MiiSendData */ /*************************************************************** * TLan_MiiSync * * Returns: * Nothing * Parms: * base_port The base IO port of the adapter in * question. * * This functions syncs all PHYs in terms of the MII configuration * bus. * **************************************************************/ void TLan_MiiSync( u16 base_port ) { int i; u16 sio; outw( TLAN_NET_SIO, base_port + TLAN_DIO_ADR ); sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO; TLan_ClearBit( TLAN_NET_SIO_MTXEN, sio ); for ( i = 0; i < 32; i++ ) { TLan_ClearBit( TLAN_NET_SIO_MCLK, sio ); TLan_SetBit( TLAN_NET_SIO_MCLK, sio ); } } /* TLan_MiiSync */ /*************************************************************** * TLan_MiiWriteReg * * Returns: * Nothing * Parms: * dev The device structure for the device * to write to. * phy The address of the PHY to be written to. * reg The register whose contents are to be * written. * val The value to be written to the register. * * This function uses the TLAN's MII bus to write the contents of a * given register on a PHY. It sends the appropriate info and then * writes the 16-bit register value from the MII configuration bus * via the TLAN SIO register. * **************************************************************/ void TLan_MiiWriteReg( struct net_device *dev, u16 phy, u16 reg, u16 val ) { u16 sio; int minten; unsigned long flags = 0; TLanPrivateInfo *priv = (TLanPrivateInfo *) dev->priv; outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR); sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO; spin_lock_irqsave(&priv->lock, flags); TLan_MiiSync( dev->base_addr ); minten = TLan_GetBit( TLAN_NET_SIO_MINTEN, sio ); if ( minten ) TLan_ClearBit( TLAN_NET_SIO_MINTEN, sio ); TLan_MiiSendData( dev->base_addr, 0x1, 2 ); /* Start ( 01b ) */ TLan_MiiSendData( dev->base_addr, 0x1, 2 ); /* Write ( 01b ) */ TLan_MiiSendData( dev->base_addr, phy, 5 ); /* Device # */ TLan_MiiSendData( dev->base_addr, reg, 5 ); /* Register # */ TLan_MiiSendData( dev->base_addr, 0x2, 2 ); /* Send ACK */ TLan_MiiSendData( dev->base_addr, val, 16 ); /* Send Data */ TLan_ClearBit( TLAN_NET_SIO_MCLK, sio ); /* Idle cycle */ TLan_SetBit( TLAN_NET_SIO_MCLK, sio ); if ( minten ) TLan_SetBit( TLAN_NET_SIO_MINTEN, sio ); spin_unlock_irqrestore(&priv->lock, flags); } /* TLan_MiiWriteReg */ /***************************************************************************** ****************************************************************************** ThunderLAN Driver Eeprom routines The Compaq Netelligent 10 and 10/100 cards use a Microchip 24C02A EEPROM. These functions are based on information in Microchip's data sheet. I don't know how well this functions will work with other EEPROMs. ****************************************************************************** *****************************************************************************/ /*************************************************************** * TLan_EeSendStart * * Returns: * Nothing * Parms: * io_base The IO port base address for the * TLAN device with the EEPROM to * use. * * This function sends a start cycle to an EEPROM attached * to a TLAN chip. * **************************************************************/ void TLan_EeSendStart( u16 io_base ) { u16 sio; outw( TLAN_NET_SIO, io_base + TLAN_DIO_ADR ); sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO; TLan_SetBit( TLAN_NET_SIO_ECLOK, sio ); TLan_SetBit( TLAN_NET_SIO_EDATA, sio ); TLan_SetBit( TLAN_NET_SIO_ETXEN, sio ); TLan_ClearBit( TLAN_NET_SIO_EDATA, sio ); TLan_ClearBit( TLAN_NET_SIO_ECLOK, sio ); } /* TLan_EeSendStart */ /*************************************************************** * TLan_EeSendByte * * Returns: * If the correct ack was received, 0, otherwise 1 * Parms: io_base The IO port base address for the * TLAN device with the EEPROM to * use. * data The 8 bits of information to * send to the EEPROM. * stop If TLAN_EEPROM_STOP is passed, a * stop cycle is sent after the * byte is sent after the ack is * read. * * This function sends a byte on the serial EEPROM line, * driving the clock to send each bit. The function then * reverses transmission direction and reads an acknowledge * bit. * **************************************************************/ int TLan_EeSendByte( u16 io_base, u8 data, int stop ) { int err; u8 place; u16 sio; outw( TLAN_NET_SIO, io_base + TLAN_DIO_ADR ); sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO; /* Assume clock is low, tx is enabled; */ for ( place = 0x80; place != 0; place >>= 1 ) { if ( place & data ) TLan_SetBit( TLAN_NET_SIO_EDATA, sio ); else TLan_ClearBit( TLAN_NET_SIO_EDATA, sio ); TLan_SetBit( TLAN_NET_SIO_ECLOK, sio ); TLan_ClearBit( TLAN_NET_SIO_ECLOK, sio ); } TLan_ClearBit( TLAN_NET_SIO_ETXEN, sio ); TLan_SetBit( TLAN_NET_SIO_ECLOK, sio ); err = TLan_GetBit( TLAN_NET_SIO_EDATA, sio ); TLan_ClearBit( TLAN_NET_SIO_ECLOK, sio ); TLan_SetBit( TLAN_NET_SIO_ETXEN, sio ); if ( ( ! err ) && stop ) { TLan_ClearBit( TLAN_NET_SIO_EDATA, sio ); /* STOP, raise data while clock is high */ TLan_SetBit( TLAN_NET_SIO_ECLOK, sio ); TLan_SetBit( TLAN_NET_SIO_EDATA, sio ); } return ( err ); } /* TLan_EeSendByte */ /*************************************************************** * TLan_EeReceiveByte * * Returns: * Nothing * Parms: * io_base The IO port base address for the * TLAN device with the EEPROM to * use. * data An address to a char to hold the * data sent from the EEPROM. * stop If TLAN_EEPROM_STOP is passed, a * stop cycle is sent after the * byte is received, and no ack is * sent. * * This function receives 8 bits of data from the EEPROM * over the serial link. It then sends and ack bit, or no * ack and a stop bit. This function is used to retrieve * data after the address of a byte in the EEPROM has been * sent. * **************************************************************/ void TLan_EeReceiveByte( u16 io_base, u8 *data, int stop ) { u8 place; u16 sio; outw( TLAN_NET_SIO, io_base + TLAN_DIO_ADR ); sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO; *data = 0; /* Assume clock is low, tx is enabled; */ TLan_ClearBit( TLAN_NET_SIO_ETXEN, sio ); for ( place = 0x80; place; place >>= 1 ) { TLan_SetBit( TLAN_NET_SIO_ECLOK, sio ); if ( TLan_GetBit( TLAN_NET_SIO_EDATA, sio ) ) *data |= place; TLan_ClearBit( TLAN_NET_SIO_ECLOK, sio ); } TLan_SetBit( TLAN_NET_SIO_ETXEN, sio ); if ( ! stop ) { TLan_ClearBit( TLAN_NET_SIO_EDATA, sio ); /* Ack = 0 */ TLan_SetBit( TLAN_NET_SIO_ECLOK, sio ); TLan_ClearBit( TLAN_NET_SIO_ECLOK, sio ); } else { TLan_SetBit( TLAN_NET_SIO_EDATA, sio ); /* No ack = 1 (?) */ TLan_SetBit( TLAN_NET_SIO_ECLOK, sio ); TLan_ClearBit( TLAN_NET_SIO_ECLOK, sio ); TLan_ClearBit( TLAN_NET_SIO_EDATA, sio ); /* STOP, raise data while clock is high */ TLan_SetBit( TLAN_NET_SIO_ECLOK, sio ); TLan_SetBit( TLAN_NET_SIO_EDATA, sio ); } } /* TLan_EeReceiveByte */ /*************************************************************** * TLan_EeReadByte * * Returns: * No error = 0, else, the stage at which the error * occurred. * Parms: * io_base The IO port base address for the * TLAN device with the EEPROM to * use. * ee_addr The address of the byte in the * EEPROM whose contents are to be * retrieved. * data An address to a char to hold the * data obtained from the EEPROM. * * This function reads a byte of information from an byte * cell in the EEPROM. * **************************************************************/ int TLan_EeReadByte( struct net_device *dev, u8 ee_addr, u8 *data ) { int err; TLanPrivateInfo *priv = (TLanPrivateInfo *) dev->priv; unsigned long flags = 0; int ret=0; spin_lock_irqsave(&priv->lock, flags); TLan_EeSendStart( dev->base_addr ); err = TLan_EeSendByte( dev->base_addr, 0xA0, TLAN_EEPROM_ACK ); if (err) { ret=1; goto fail; } err = TLan_EeSendByte( dev->base_addr, ee_addr, TLAN_EEPROM_ACK ); if (err) { ret=2; goto fail; } TLan_EeSendStart( dev->base_addr ); err = TLan_EeSendByte( dev->base_addr, 0xA1, TLAN_EEPROM_ACK ); if (err) { ret=3; goto fail; } TLan_EeReceiveByte( dev->base_addr, data, TLAN_EEPROM_STOP ); fail: spin_unlock_irqrestore(&priv->lock, flags); return ret; } /* TLan_EeReadByte */