Merge branch 'topic/convert-tasklet' into to-push

[linux-2.6] / drivers / net / tlan.c

/*******************************************************************************
 *
 *  Linux ThunderLAN Driver
 *
 *  tlan.c
 *  by James Banks
 *
 *  (C) 1997-1998 Caldera, Inc.
 *  (C) 1998 James Banks
 *  (C) 1999-2001 Torben Mathiasen
 *  (C) 2002 Samuel Chessman
 *
 *  This software may be used and distributed according to the terms
 *  of the GNU General Public License, incorporated herein by reference.
 *
 ** 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 <tigran@sco.com>:       TLan_PciProbe() now uses
 *                                              new PCI BIOS interface.
 *      Alan Cox        <alan@lxorguk.ukuu.org.uk>:
 *                                              Fixed the out of memory
 *                                              handling.
 *
 *      Torben Mathiasen <torben.mathiasen@compaq.com> 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 <john.cagle@compaq.com>.
 *                           - 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.)
 *
 *      v1.13 Nov 28, 2000   - Stop flooding console with auto-neg issues
 *                             when link can't be established.
 *                           - Added the bbuf option as a kernel parameter.
 *                           - Fixed ioaddr probe bug.
 *                           - Fixed stupid deadlock with MII interrupts.
 *                           - Added support for speed/duplex selection with
 *                             multiple nics.
 *                           - Added partly fix for TX Channel lockup with
 *                             TLAN v1.0 silicon. This needs to be investigated
 *                             further.
 *
 *      v1.14 Dec 16, 2000   - Added support for servicing multiple frames per.
 *                             interrupt. Thanks goes to
 *                             Adam Keys <adam@ti.com>
 *                             Denis Beaudoin <dbeaudoin@ti.com>
 *                             for providing the patch.
 *                           - Fixed auto-neg output when using multiple
 *                             adapters.
 *                           - Converted to use new taskq interface.
 *
 *      v1.14a Jan 6, 2001   - Minor adjustments (spinlocks, etc.)
 *
 *      Samuel Chessman <chessman@tux.org> New Maintainer!
 *
 *      v1.15 Apr 4, 2002    - Correct operation when aui=1 to be
 *                             10T half duplex no loopback
 *                             Thanks to Gunnar Eikman
 *******************************************************************************/

#include <linux/module.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/eisa.h>
#include <linux/pci.h>
#include <linux/dma-mapping.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/delay.h>
#include <linux/spinlock.h>
#include <linux/workqueue.h>
#include <linux/mii.h>

#include "tlan.h"

typedef u32 (TLanIntVectorFunc)( struct net_device *, u16 );


/* For removing EISA devices */
static  struct net_device       *TLan_Eisa_Devices;

static  int             TLanDevicesInstalled;

/* Set speed, duplex and aui settings */
static  int aui[MAX_TLAN_BOARDS];
static  int duplex[MAX_TLAN_BOARDS];
static  int speed[MAX_TLAN_BOARDS];
static  int boards_found;
module_param_array(aui, int, NULL, 0);
module_param_array(duplex, int, NULL, 0);
module_param_array(speed, int, NULL, 0);
MODULE_PARM_DESC(aui, "ThunderLAN use AUI port(s) (0-1)");
MODULE_PARM_DESC(duplex, "ThunderLAN duplex setting(s) (0-default, 1-half, 2-full)");
MODULE_PARM_DESC(speed, "ThunderLAN port speen setting(s) (0,10,100)");

MODULE_AUTHOR("Maintainer: Samuel Chessman <chessman@tux.org>");
MODULE_DESCRIPTION("Driver for TI ThunderLAN based ethernet PCI adapters");
MODULE_LICENSE("GPL");


/* Define this to enable Link beat monitoring */
#undef MONITOR

/* Turn on debugging. See Documentation/networking/tlan.txt for details */
static  int             debug;
module_param(debug, int, 0);
MODULE_PARM_DESC(debug, "ThunderLAN debug mask");

static  int             bbuf;
module_param(bbuf, int, 0);
MODULE_PARM_DESC(bbuf, "ThunderLAN use big buffer (0-1)");

static  const char TLanSignature[] = "TLAN";
static  const char tlan_banner[] = "ThunderLAN driver v1.15\n";
static  int tlan_have_pci;
static  int tlan_have_eisa;

static const char *media[] = {
        "10BaseT-HD ", "10BaseT-FD ","100baseTx-HD ",
        "100baseTx-FD", "100baseT4", NULL
};

static struct board {
        const char      *deviceLabel;
        u32             flags;
        u16             addrOfs;
} board_info[] = {
        { "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[] = {
        { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL10,
                PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
        { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100,
                PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 },
        { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3I,
                PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2 },
        { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_THUNDER,
                PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3 },
        { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3B,
                PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
        { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100PI,
                PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5 },
        { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100D,
                PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6 },
        { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100I,
                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 irqreturn_t TLan_HandleInterrupt( int, void *);
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 void     TLan_tx_timeout_work(struct work_struct *work);
static int      tlan_init_one( struct pci_dev *pdev, const struct pci_device_id *ent);

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 inline void
TLan_StoreSKB( struct tlan_list_tag *tag, struct sk_buff *skb)
{
        unsigned long addr = (unsigned long)skb;
        tag->buffer[9].address = addr;
        tag->buffer[8].address = upper_32_bits(addr);
}

static inline struct sk_buff *
TLan_GetSKB( const struct tlan_list_tag *tag)
{
        unsigned long addr;

        addr = tag->buffer[9].address;
        addr |= (tag->buffer[8].address << 16) << 16;
        return (struct sk_buff *) addr;
}


static TLanIntVectorFunc *TLanIntVector[TLAN_INT_NUMBER_OF_INTS] = {
        NULL,
        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 = netdev_priv(dev);
        unsigned long flags = 0;

        if (!in_irq())
                spin_lock_irqsave(&priv->lock, flags);
        if ( priv->timer.function != NULL &&
                priv->timerType != TLAN_TIMER_ACTIVITY ) {
                if (!in_irq())
                        spin_unlock_irqrestore(&priv->lock, flags);
                return;
        }
        priv->timer.function = &TLan_Timer;
        if (!in_irq())
                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 = pci_get_drvdata( pdev );
        TLanPrivateInfo *priv = netdev_priv(dev);

        unregister_netdev( dev );

        if ( priv->dmaStorage ) {
                pci_free_consistent(priv->pciDev,
                                    priv->dmaSize, priv->dmaStorage,
                                    priv->dmaStorageDMA );
        }

#ifdef CONFIG_PCI
        pci_release_regions(pdev);
#endif

        free_netdev( dev );

        pci_set_drvdata( pdev, NULL );
}

static struct pci_driver tlan_driver = {
        .name           = "tlan",
        .id_table       = tlan_pci_tbl,
        .probe          = tlan_init_one,
        .remove         = __devexit_p(tlan_remove_one),
};

static int __init tlan_probe(void)
{
        int rc = -ENODEV;

        printk(KERN_INFO "%s", tlan_banner);

        TLAN_DBG(TLAN_DEBUG_PROBE, "Starting PCI Probe....\n");

        /* Use new style PCI probing. Now the kernel will
           do most of this for us */
        rc = pci_register_driver(&tlan_driver);

        if (rc != 0) {
                printk(KERN_ERR "TLAN: Could not register pci driver.\n");
                goto err_out_pci_free;
        }

        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);

        if (TLanDevicesInstalled == 0) {
                rc = -ENODEV;
                goto  err_out_pci_unreg;
        }
        return 0;

err_out_pci_unreg:
        pci_unregister_driver(&tlan_driver);
err_out_pci_free:
        return rc;
}


static int __devinit tlan_init_one( struct pci_dev *pdev,
                                    const struct pci_device_id *ent)
{
        return TLan_probe1( pdev, -1, -1, 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;
        u16                device_id;
        int                reg, rc = -ENODEV;

#ifdef CONFIG_PCI
        if (pdev) {
                rc = pci_enable_device(pdev);
                if (rc)
                        return rc;

                rc = pci_request_regions(pdev, TLanSignature);
                if (rc) {
                        printk(KERN_ERR "TLAN: Could not reserve IO regions\n");
                        goto err_out;
                }
        }
#endif  /*  CONFIG_PCI  */

        dev = alloc_etherdev(sizeof(TLanPrivateInfo));
        if (dev == NULL) {
                printk(KERN_ERR "TLAN: Could not allocate memory for device.\n");
                rc = -ENOMEM;
                goto err_out_regions;
        }
        SET_NETDEV_DEV(dev, &pdev->dev);

        priv = netdev_priv(dev);

        priv->pciDev = pdev;
        priv->dev = dev;

        /* Is this a PCI device? */
        if (pdev) {
                u32                pci_io_base = 0;

                priv->adapter = &board_info[ent->driver_data];

                rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
                if (rc) {
                        printk(KERN_ERR "TLAN: No suitable PCI mapping available.\n");
                        goto err_out_free_dev;
                }

                for ( reg= 0; reg <= 5; reg ++ ) {
                        if (pci_resource_flags(pdev, reg) & IORESOURCE_IO) {
                                pci_io_base = pci_resource_start(pdev, reg);
                                TLAN_DBG( TLAN_DEBUG_GNRL, "IO mapping is available at %x.\n",
                                                pci_io_base);
                                break;
                        }
                }
                if (!pci_io_base) {
                        printk(KERN_ERR "TLAN: No IO mappings available\n");
                        rc = -EIO;
                        goto err_out_free_dev;
                }

                dev->base_addr = pci_io_base;
                dev->irq = pdev->irq;
                priv->adapterRev = pdev->revision;
                pci_set_master(pdev);
                pci_set_drvdata(pdev, 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 */
                }
                dev->base_addr = ioaddr;
                dev->irq = irq;
        }

        /* 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 {
                priv->aui    = aui[boards_found];
                priv->speed  = speed[boards_found];
                priv->duplex = duplex[boards_found];
                priv->debug = debug;
        }

        /* This will be used when we get an adapter error from
         * within our irq handler */
        INIT_WORK(&priv->tlan_tqueue, TLan_tx_timeout_work);

        spin_lock_init(&priv->lock);

        rc = TLan_Init(dev);
        if (rc) {
                printk(KERN_ERR "TLAN: Could not set up device.\n");
                goto err_out_free_dev;
        }

        rc = register_netdev(dev);
        if (rc) {
                printk(KERN_ERR "TLAN: Could not register device.\n");
                goto err_out_uninit;
        }


        TLanDevicesInstalled++;
        boards_found++;

        /* 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;

err_out_uninit:
        pci_free_consistent(priv->pciDev, priv->dmaSize, priv->dmaStorage,
                            priv->dmaStorageDMA );
err_out_free_dev:
        free_netdev(dev);
err_out_regions:
#ifdef CONFIG_PCI
        if (pdev)
                pci_release_regions(pdev);
#endif
err_out:
        if (pdev)
                pci_disable_device(pdev);
        return rc;
}


static void TLan_Eisa_Cleanup(void)
{
        struct net_device *dev;
        TLanPrivateInfo *priv;

        while( tlan_have_eisa ) {
                dev = TLan_Eisa_Devices;
                priv = netdev_priv(dev);
                if (priv->dmaStorage) {
                        pci_free_consistent(priv->pciDev, priv->dmaSize,
                                            priv->dmaStorage, priv->dmaStorageDMA );
                }
                release_region( dev->base_addr, 0x10);
                unregister_netdev( dev );
                TLan_Eisa_Devices = priv->nextDevice;
                free_netdev( dev );
                tlan_have_eisa--;
        }
}


static void __exit tlan_exit(void)
{
        pci_unregister_driver(&tlan_driver);

        if (tlan_have_eisa)
                TLan_Eisa_Cleanup();

}


/* 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 */

#ifdef CONFIG_NET_POLL_CONTROLLER
static void TLan_Poll(struct net_device *dev)
{
        disable_irq(dev->irq);
        TLan_HandleInterrupt(dev->irq, dev);
        enable_irq(dev->irq);
}
#endif




        /***************************************************************
         *      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 = netdev_priv(dev);

        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 = pci_alloc_consistent(priv->pciDev,
                                                dma_size, &priv->dmaStorageDMA);
        priv->dmaSize = dma_size;

        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 *) ALIGN((unsigned long)priv->dmaStorage, 8);
        priv->rxListDMA = ALIGN(priv->dmaStorageDMA, 8);
        priv->txList = priv->rxList + TLAN_NUM_RX_LISTS;
        priv->txListDMA = priv->rxListDMA + sizeof(TLanList) * TLAN_NUM_RX_LISTS;

        if ( bbuf ) {
                priv->rxBuffer = (u8 *) ( priv->txList + TLAN_NUM_TX_LISTS );
                priv->rxBufferDMA =priv->txListDMA
                        + sizeof(TLanList) * TLAN_NUM_TX_LISTS;
                priv->txBuffer = priv->rxBuffer
                        + ( TLAN_NUM_RX_LISTS * TLAN_MAX_FRAME_SIZE );
                priv->txBufferDMA = priv->rxBufferDMA
                        + ( 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;

        netif_carrier_off(dev);

        /* 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;
#ifdef CONFIG_NET_POLL_CONTROLLER
        dev->poll_controller = &TLan_Poll;
#endif
        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 = netdev_priv(dev);
        int             err;

        priv->tlanRev = TLan_DioRead8( dev->base_addr, TLAN_DEF_REVISION );
        err = request_irq( dev->irq, TLan_HandleInterrupt, IRQF_SHARED,
                           dev->name, dev );

        if ( err ) {
                pr_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 = netdev_priv(dev);
        struct mii_ioctl_data *data = if_mii(rq);
        u32 phy   = priv->phy[priv->phyNum];

        if (!priv->phyOnline)
                return -EAGAIN;

        switch(cmd) {
        case SIOCGMIIPHY:               /* Get address of MII PHY in use. */
                        data->phy_id = phy;


        case SIOCGMIIREG:               /* Read MII PHY register. */
                        TLan_MiiReadReg(dev, data->phy_id & 0x1f,
                                        data->reg_num & 0x1f, &data->val_out);
                        return 0;


        case SIOCSMIIREG:               /* Write MII PHY register. */
                        if (!capable(CAP_NET_ADMIN))
                                return -EPERM;
                        TLan_MiiWriteReg(dev, data->phy_id & 0x1f,
                                         data->reg_num & 0x1f, data->val_in);
                        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_FreeLists( dev );
        TLan_ResetLists( dev );
        TLan_ReadAndClearStats( dev, TLAN_IGNORE );
        TLan_ResetAdapter( dev );
        dev->trans_start = jiffies;
        netif_wake_queue( dev );

}


        /***************************************************************
         *      TLan_tx_timeout_work
         *
         *      Returns: nothing
         *
         *      Params:
         *              work    work item of device which timed out
         *
         **************************************************************/

static void TLan_tx_timeout_work(struct work_struct *work)
{
        TLanPrivateInfo *priv =
                container_of(work, TLanPrivateInfo, tlan_tqueue);

        TLan_tx_timeout(priv->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 = netdev_priv(dev);
        TLanList        *tail_list;
        dma_addr_t      tail_list_phys;
        u8              *tail_buffer;
        unsigned long   flags;
        unsigned int    txlen;

        if ( ! priv->phyOnline ) {
                TLAN_DBG( TLAN_DEBUG_TX, "TRANSMIT:  %s PHY is not ready\n",
                          dev->name );
                dev_kfree_skb_any(skb);
                return 0;
        }

        if (skb_padto(skb, TLAN_MIN_FRAME_SIZE))
                return 0;
        txlen = max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE);

        tail_list = priv->txList + priv->txTail;
        tail_list_phys = priv->txListDMA + sizeof(TLanList) * 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 );
                skb_copy_from_linear_data(skb, tail_buffer, txlen);
        } else {
                tail_list->buffer[0].address = pci_map_single(priv->pciDev,
                                                              skb->data, txlen,
                                                              PCI_DMA_TODEVICE);
                TLan_StoreSKB(tail_list, skb);
        }

        tail_list->frameSize = (u16) txlen;
        tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) txlen;
        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;
                TLAN_DBG( TLAN_DEBUG_TX,
                          "TRANSMIT:  Starting TX on buffer %d\n", priv->txTail );
                outl( tail_list_phys, dev->base_addr + TLAN_CH_PARM );
                outl( TLAN_HC_GO, 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
                                = tail_list_phys;
                } else {
                        ( priv->txList + ( priv->txTail - 1 ) )->forward
                                = tail_list_phys;
                }
        }
        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.
         *
         *      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 irqreturn_t TLan_HandleInterrupt(int irq, void *dev_id)
{
        struct net_device       *dev = dev_id;
        TLanPrivateInfo *priv = netdev_priv(dev);
        u16             host_int;
        u16             type;

        spin_lock(&priv->lock);

        host_int = inw( dev->base_addr + TLAN_HOST_INT );
        type = ( host_int & TLAN_HI_IT_MASK ) >> 2;
        if ( type ) {
                u32     ack;
                u32     host_cmd;

                outw( host_int, dev->base_addr + TLAN_HOST_INT );
                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);

        return IRQ_RETVAL(type);
} /* 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 = netdev_priv(dev);

        netif_stop_queue(dev);
        priv->neg_be_verbose = 0;

        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 = netdev_priv(dev);
        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 &dev->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_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.
         *
         **************************************************************/

static u32 TLan_HandleTxEOF( struct net_device *dev, u16 host_int )
{
        TLanPrivateInfo *priv = netdev_priv(dev);
        int             eoc = 0;
        TLanList        *head_list;
        dma_addr_t      head_list_phys;
        u32             ack = 0;
        u16             tmpCStat;

        TLAN_DBG( TLAN_DEBUG_TX, "TRANSMIT:  Handling TX EOF (Head=%d Tail=%d)\n",
                  priv->txHead, priv->txTail );
        head_list = priv->txList + priv->txHead;

        while (((tmpCStat = head_list->cStat ) & TLAN_CSTAT_FRM_CMP) && (ack < 255)) {
                ack++;
                if ( ! bbuf ) {
                        struct sk_buff *skb = TLan_GetSKB(head_list);
                        pci_unmap_single(priv->pciDev, head_list->buffer[0].address,
                                         max(skb->len,
                                             (unsigned int)TLAN_MIN_FRAME_SIZE),
                                         PCI_DMA_TODEVICE);
                        dev_kfree_skb_any(skb);
                        head_list->buffer[8].address = 0;
                        head_list->buffer[9].address = 0;
                }

                if ( tmpCStat & TLAN_CSTAT_EOC )
                        eoc = 1;

                dev->stats.tx_bytes += head_list->frameSize;

                head_list->cStat = TLAN_CSTAT_UNUSED;
                netif_start_queue(dev);
                CIRC_INC( priv->txHead, TLAN_NUM_TX_LISTS );
                head_list = priv->txList + priv->txHead;
        }

        if (!ack)
                printk(KERN_INFO "TLAN: Received interrupt for uncompleted TX frame.\n");

        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;
                head_list_phys = priv->txListDMA + sizeof(TLanList) * priv->txHead;
                if ( ( head_list->cStat & TLAN_CSTAT_READY ) == TLAN_CSTAT_READY ) {
                        outl(head_list_phys, 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.
         *
         **************************************************************/

static u32 TLan_HandleStatOverflow( struct net_device *dev, u16 host_int )
{
        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 activity LED.
         *
         **************************************************************/

static u32 TLan_HandleRxEOF( struct net_device *dev, u16 host_int )
{
        TLanPrivateInfo *priv = netdev_priv(dev);
        u32             ack = 0;
        int             eoc = 0;
        u8              *head_buffer;
        TLanList        *head_list;
        struct sk_buff  *skb;
        TLanList        *tail_list;
        u16             tmpCStat;
        dma_addr_t      head_list_phys;

        TLAN_DBG( TLAN_DEBUG_RX, "RECEIVE:  Handling RX EOF (Head=%d Tail=%d)\n",
                  priv->rxHead, priv->rxTail );
        head_list = priv->rxList + priv->rxHead;
        head_list_phys = priv->rxListDMA + sizeof(TLanList) * priv->rxHead;

        while (((tmpCStat = head_list->cStat) & TLAN_CSTAT_FRM_CMP) && (ack < 255)) {
                dma_addr_t frameDma = head_list->buffer[0].address;
                u32 frameSize = head_list->frameSize;
                ack++;
                if (tmpCStat & TLAN_CSTAT_EOC)
                        eoc = 1;

                if (bbuf) {
                        skb = netdev_alloc_skb(dev, frameSize + 7);
                        if ( !skb )
                                goto drop_and_reuse;

                        head_buffer = priv->rxBuffer
                                + (priv->rxHead * TLAN_MAX_FRAME_SIZE);
                        skb_reserve(skb, 2);
                        pci_dma_sync_single_for_cpu(priv->pciDev,
                                                    frameDma, frameSize,
                                                    PCI_DMA_FROMDEVICE);
                        skb_copy_from_linear_data(skb, head_buffer, frameSize);
                        skb_put(skb, frameSize);
                        dev->stats.rx_bytes += frameSize;

                        skb->protocol = eth_type_trans( skb, dev );
                        netif_rx( skb );
                } else {
                        struct sk_buff *new_skb;

                        new_skb = netdev_alloc_skb(dev, TLAN_MAX_FRAME_SIZE + 7 );
                        if ( !new_skb )
                                goto drop_and_reuse;

                        skb = TLan_GetSKB(head_list);
                        pci_unmap_single(priv->pciDev, frameDma,
                                         TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
                        skb_put( skb, frameSize );

                        dev->stats.rx_bytes += frameSize;

                        skb->protocol = eth_type_trans( skb, dev );
                        netif_rx( skb );

                        skb_reserve( new_skb, NET_IP_ALIGN );
                        head_list->buffer[0].address = pci_map_single(priv->pciDev,
                                                                      new_skb->data,
                                                                      TLAN_MAX_FRAME_SIZE,
                                                                      PCI_DMA_FROMDEVICE);

                        TLan_StoreSKB(head_list, new_skb);

                }
drop_and_reuse:
                head_list->forward = 0;
                head_list->cStat = 0;
                tail_list = priv->rxList + priv->rxTail;
                tail_list->forward = head_list_phys;

                CIRC_INC( priv->rxHead, TLAN_NUM_RX_LISTS );
                CIRC_INC( priv->rxTail, TLAN_NUM_RX_LISTS );
                head_list = priv->rxList + priv->rxHead;
                head_list_phys = priv->rxListDMA + sizeof(TLanList) * priv->rxHead;
        }

        if (!ack)
                printk(KERN_INFO "TLAN: Received interrupt for uncompleted RX frame.\n");


        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;
                head_list_phys = priv->rxListDMA + sizeof(TLanList) * priv->rxHead;
                outl(head_list_phys, 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.
         *
         **************************************************************/

static u32 TLan_HandleDummy( struct net_device *dev, u16 host_int )
{
        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 occurrences 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.
         *
         **************************************************************/

static u32 TLan_HandleTxEOC( struct net_device *dev, u16 host_int )
{
        TLanPrivateInfo *priv = netdev_priv(dev);
        TLanList                *head_list;
        dma_addr_t              head_list_phys;
        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;
                head_list_phys = priv->txListDMA + sizeof(TLanList) * priv->txHead;
                if ( ( head_list->cStat & TLAN_CSTAT_READY ) == TLAN_CSTAT_READY ) {
                        netif_stop_queue(dev);
                        outl( head_list_phys, 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.
         *
         **************************************************************/

static u32 TLan_HandleStatusCheck( struct net_device *dev, u16 host_int )
{
        TLanPrivateInfo *priv = netdev_priv(dev);
        u32             ack;
        u32             error;
        u8              net_sts;
        u32             phy;
        u16             tlphy_ctl;
        u16             tlphy_sts;

        ack = 1;
        if ( host_int & TLAN_HI_IV_MASK ) {
                netif_stop_queue( dev );
                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 );

                schedule_work(&priv->tlan_tqueue);

                netif_wake_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 occurrences 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.
         *
         **************************************************************/

static u32 TLan_HandleRxEOC( struct net_device *dev, u16 host_int )
{
        TLanPrivateInfo *priv = netdev_priv(dev);
        dma_addr_t      head_list_phys;
        u32             ack = 1;

        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_phys = priv->rxListDMA + sizeof(TLanList) * priv->rxHead;
                outl( head_list_phys, 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.
         *
         **************************************************************/

static void TLan_Timer( unsigned long data )
{
        struct net_device       *dev = (struct net_device *) data;
        TLanPrivateInfo *priv = netdev_priv(dev);
        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.
         *
         **************************************************************/

static void TLan_ResetLists( struct net_device *dev )
{
        TLanPrivateInfo *priv = netdev_priv(dev);
        int             i;
        TLanList        *list;
        dma_addr_t      list_phys;
        struct sk_buff  *skb;

        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 = priv->txBufferDMA
                                + ( i * TLAN_MAX_FRAME_SIZE );
                } else {
                        list->buffer[0].address = 0;
                }
                list->buffer[2].count = 0;
                list->buffer[2].address = 0;
                list->buffer[8].address = 0;
                list->buffer[9].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_phys = priv->rxListDMA + sizeof(TLanList) * 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 = priv->rxBufferDMA
                                + ( i * TLAN_MAX_FRAME_SIZE );
                } else {
                        skb = netdev_alloc_skb(dev, TLAN_MAX_FRAME_SIZE + 7 );
                        if ( !skb ) {
                                pr_err("TLAN: out of memory for received data.\n" );
                                break;
                        }

                        skb_reserve( skb, NET_IP_ALIGN );
                        list->buffer[0].address = pci_map_single(priv->pciDev,
                                                                 skb->data,
                                                                 TLAN_MAX_FRAME_SIZE,
                                                                 PCI_DMA_FROMDEVICE);
                        TLan_StoreSKB(list, skb);
                }
                list->buffer[1].count = 0;
                list->buffer[1].address = 0;
                list->forward = list_phys + sizeof(TLanList);
        }

        /* in case ran out of memory early, clear bits */
        while (i < TLAN_NUM_RX_LISTS) {
                TLan_StoreSKB(priv->rxList + i, NULL);
                ++i;
        }
        list->forward = 0;

} /* TLan_ResetLists */


static void TLan_FreeLists( struct net_device *dev )
{
        TLanPrivateInfo *priv = netdev_priv(dev);
        int             i;
        TLanList        *list;
        struct sk_buff  *skb;

        if ( ! bbuf ) {
                for ( i = 0; i < TLAN_NUM_TX_LISTS; i++ ) {
                        list = priv->txList + i;
                        skb = TLan_GetSKB(list);
                        if ( skb ) {
                                pci_unmap_single(
                                        priv->pciDev,
                                        list->buffer[0].address,
                                        max(skb->len,
                                            (unsigned int)TLAN_MIN_FRAME_SIZE),
                                        PCI_DMA_TODEVICE);
                                dev_kfree_skb_any( skb );
                                list->buffer[8].address = 0;
                                list->buffer[9].address = 0;
                        }
                }

                for ( i = 0; i < TLAN_NUM_RX_LISTS; i++ ) {
                        list = priv->rxList + i;
                        skb = TLan_GetSKB(list);
                        if ( skb ) {
                                pci_unmap_single(priv->pciDev,
                                                 list->buffer[0].address,
                                                 TLAN_MAX_FRAME_SIZE,
                                                 PCI_DMA_FROMDEVICE);
                                dev_kfree_skb_any( skb );
                                list->buffer[8].address = 0;
                                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 internal (DIO)
         *      registers of a TLAN chip.
         *
         **************************************************************/

static 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.
         *
         **************************************************************/

static void TLan_PrintList( TLanList *list, char *type, int num)
{
        int i;

        printk( "TLAN:   %s List %d at %p\n", type, num, 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).
         *
         **************************************************************/

static void TLan_ReadAndClearStats( struct net_device *dev, int record )
{
        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 ) {
                dev->stats.rx_packets += rx_good;
                dev->stats.rx_errors  += rx_over + crc + code;
                dev->stats.tx_packets += tx_good;
                dev->stats.tx_errors  += tx_under + loss;
                dev->stats.collisions += multi_col + single_col + excess_col + late_col;

                dev->stats.rx_over_errors    += rx_over;
                dev->stats.rx_crc_errors     += crc;
                dev->stats.rx_frame_errors   += code;

                dev->stats.tx_aborted_errors += tx_under;
                dev->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.
         *
         **************************************************************/

static void
TLan_ResetAdapter( struct net_device *dev )
{
        TLanPrivateInfo *priv = netdev_priv(dev);
        int             i;
        u32             addr;
        u32             data;
        u8              data8;

        priv->tlanFullDuplex = FALSE;
        priv->phyOnline=0;
        netif_carrier_off(dev);

/*  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 | 0x3f, dev->base_addr + TLAN_HOST_CMD );
        outl( TLAN_HC_LD_THR | 0x9, 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 */




static void
TLan_FinishReset( struct net_device *dev )
{
        TLanPrivateInfo *priv = netdev_priv(dev);
        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, ((1536)+7)&~7 );
        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<<i))
                                                        printk("%s",media[i-5]);
                                printk("\n");
                        }

                        TLan_DioWrite8( dev->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( priv->rxListDMA, dev->base_addr + TLAN_CH_PARM );
                outl( TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD );
                netif_carrier_on(dev);
        } 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_SetMulticastList(dev);

} /* 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.
         *
         **************************************************************/

static 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 transceiver).
         *
         ********************************************************************/

static void TLan_PhyPrint( struct net_device *dev )
{
        TLanPrivateInfo *priv = netdev_priv(dev);
        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).
         *
         ********************************************************************/

static void TLan_PhyDetect( struct net_device *dev )
{
        TLanPrivateInfo *priv = netdev_priv(dev);
        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 */




static void TLan_PhyPowerDown( struct net_device *dev )
{
        TLanPrivateInfo *priv = netdev_priv(dev);
        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
         * transceiver settles.
         */
        TLan_SetTimer( dev, (HZ/20), TLAN_TIMER_PHY_PUP );

} /* TLan_PhyPowerDown */




static void TLan_PhyPowerUp( struct net_device *dev )
{
        TLanPrivateInfo *priv = netdev_priv(dev);
        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
         * transceiver.  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 */




static void TLan_PhyReset( struct net_device *dev )
{
        TLanPrivateInfo *priv = netdev_priv(dev);
        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 */




static void TLan_PhyStartLink( struct net_device *dev )
{
        TLanPrivateInfo *priv = netdev_priv(dev);
        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 ) {
                control = 0;
                TLan_MiiReadReg( dev, phy, TLAN_TLPHY_CTL, &tctl );
                if ( priv->aui ) {
                        tctl |= TLAN_TC_AUISEL;
                } else {
                        tctl &= ~TLAN_TC_AUISEL;
                        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 transceiver time
         * to establish link.
         */
        TLan_SetTimer( dev, (4*HZ), TLAN_TIMER_FINISH_RESET );

} /* TLan_PhyStartLink */




static void TLan_PhyFinishAutoNeg( struct net_device *dev )
{
        TLanPrivateInfo *priv = netdev_priv(dev);
        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.
                 */
                 if (!priv->neg_be_verbose++) {
                         pr_info("TLAN:  Giving autonegotiation more time.\n");
                         pr_info("TLAN:  Please check that your adapter has\n");
                         pr_info("TLAN:  been properly connected to a HUB or Switch.\n");
                         pr_info("TLAN:  Trying to establish link in the background...\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 );
                        pr_info("TLAN:  Starting internal PHY with FULL-DUPLEX\n" );
                } else {
                        TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, MII_GC_AUTOENB );
                        pr_info( "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 = netdev_priv(dev);
        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);
                      netif_carrier_off(dev);
                      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);
                netif_carrier_on(dev);
        }

        /* 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
         *                              retrieved.
         *              val             A pointer to a variable to store the
         *                              retrieved value.
         *
         *      This function uses the TLAN's MII bus to retrieve 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.
         *
         **************************************************************/

static 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 = netdev_priv(dev);
        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;

        if (!in_irq())
                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;

        if (!in_irq())
                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.
         *
         **************************************************************/

static 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.
         *
         **************************************************************/

static 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.
         *
         **************************************************************/

static void TLan_MiiWriteReg( struct net_device *dev, u16 phy, u16 reg, u16 val )
{
        u16     sio;
        int     minten;
        unsigned long flags = 0;
        TLanPrivateInfo *priv = netdev_priv(dev);

        outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
        sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;

        if (!in_irq())
                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 );

        if (!in_irq())
                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.
         *
         **************************************************************/

static 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.
         *
         **************************************************************/

static 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 ) {
                /* STOP, raise data while clock is high */
                TLan_ClearBit( TLAN_NET_SIO_EDATA, sio );
                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.
         *
         **************************************************************/

static 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 );
                /* STOP, raise data while clock is high */
                TLan_ClearBit( TLAN_NET_SIO_EDATA, sio );
                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.
         *
         **************************************************************/

static int TLan_EeReadByte( struct net_device *dev, u8 ee_addr, u8 *data )
{
        int err;
        TLanPrivateInfo *priv = netdev_priv(dev);
        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 */