tlan.c

i386的bootloader源码grub

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_AUTHOR("Maintainer: Torben Mathiasen <[e-mail]>");
MODULE_DESCRIPTION("Driver for TI ThunderLAN based ethernet PCI adapters");
MODULE_LICENSE("GPL");

MODULE_PARM(aui, "1-" __MODULE_STRING(MAX_TLAN_BOARDS) "i");
MODULE_PARM(duplex, "1-" __MODULE_STRING(MAX_TLAN_BOARDS) "i");
MODULE_PARM(speed, "1-" __MODULE_STRING(MAX_TLAN_BOARDS) "i");
MODULE_PARM(debug, "i");
MODULE_PARM(bbuf, "i");
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_PARM_DESC(debug, "ThunderLAN debug mask");
MODULE_PARM_DESC(bbuf, "ThunderLAN use big buffer (0-1)");
EXPORT_NO_SYMBOLS;

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

/* Turn on debugging. See linux/Documentation/networking/tlan.txt for details */
static  int		debug;

static	int		bbuf;
static	u8		*TLanPadBuffer;
static	char		TLanSignature[] = "TLAN";
static const char tlan_banner[] = "ThunderLAN driver v1.14a\n";
static int tlan_have_pci;
static int tlan_have_eisa;

const char *media[] = {
	"10BaseT-HD ", "10BaseT-FD ","100baseTx-HD ", 
	"100baseTx-FD", "100baseT4", 0
};

int media_map[] = { 0x0020, 0x0040, 0x0080, 0x0100, 0x0200,};

static struct board {
	const char	*deviceLabel;
	u32	   	flags;
	u16	   	addrOfs;
} board_info[] __devinitdata = {
	{ "Compaq Netelligent 10 T PCI UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
	{ "Compaq Netelligent 10/100 TX PCI UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
	{ "Compaq Integrated NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
	{ "Compaq NetFlex-3/P", TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
	{ "Compaq NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
	{ "Compaq Netelligent Integrated 10/100 TX UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
	{ "Compaq Netelligent Dual 10/100 TX PCI UTP", TLAN_ADAPTER_NONE, 0x83 },
	{ "Compaq Netelligent 10/100 TX Embedded UTP", TLAN_ADAPTER_NONE, 0x83 },
	{ "Olicom OC-2183/2185", TLAN_ADAPTER_USE_INTERN_10, 0x83 },
	{ "Olicom OC-2325", TLAN_ADAPTER_UNMANAGED_PHY, 0xF8 },
	{ "Olicom OC-2326", TLAN_ADAPTER_USE_INTERN_10, 0xF8 },
	{ "Compaq Netelligent 10/100 TX UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
	{ "Compaq Netelligent 10 T/2 PCI UTP/Coax", TLAN_ADAPTER_NONE, 0x83 },
	{ "Compaq NetFlex-3/E", TLAN_ADAPTER_ACTIVITY_LED | 	/* EISA card */
	                        TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },	
	{ "Compaq NetFlex-3/E", TLAN_ADAPTER_ACTIVITY_LED, 0x83 }, /* EISA card */
};

static struct pci_device_id tlan_pci_tbl[] __devinitdata = {
	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_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 void	TLan_HandleInterrupt( int, void *, struct pt_regs *);
static int	TLan_Close( struct net_device *);
static struct	net_device_stats *TLan_GetStats( struct net_device *);
static void	TLan_SetMulticastList( struct net_device *);
static int	TLan_ioctl( struct net_device *dev, struct ifreq *rq, int cmd);
static int      TLan_probe1( struct pci_dev *pdev, long ioaddr, int irq, int rev, const struct pci_device_id *ent);
static void	TLan_tx_timeout( struct net_device *dev);
static int 	tlan_init_one( struct pci_dev *pdev, const struct pci_device_id *ent);

static u32	TLan_HandleInvalid( struct net_device *, u16 );
static u32	TLan_HandleTxEOF( struct net_device *, u16 );
static u32	TLan_HandleStatOverflow( struct net_device *, u16 );
static u32	TLan_HandleRxEOF( struct net_device *, u16 );
static u32	TLan_HandleDummy( struct net_device *, u16 );
static u32	TLan_HandleTxEOC( struct net_device *, u16 );
static u32	TLan_HandleStatusCheck( struct net_device *, u16 );
static u32	TLan_HandleRxEOC( struct net_device *, u16 );

static void	TLan_Timer( unsigned long );

static void	TLan_ResetLists( struct net_device * );
static void	TLan_FreeLists( struct net_device * );
static void	TLan_PrintDio( u16 );
static void	TLan_PrintList( TLanList *, char *, int );
static void	TLan_ReadAndClearStats( struct net_device *, int );
static void	TLan_ResetAdapter( struct net_device * );
static void	TLan_FinishReset( struct net_device * );
static void	TLan_SetMac( struct net_device *, int areg, char *mac );

static void	TLan_PhyPrint( struct net_device * );
static void	TLan_PhyDetect( struct net_device * );
static void	TLan_PhyPowerDown( struct net_device * );
static void	TLan_PhyPowerUp( struct net_device * );
static void	TLan_PhyReset( struct net_device * );
static void	TLan_PhyStartLink( struct net_device * );
static void	TLan_PhyFinishAutoNeg( struct net_device * );
#ifdef MONITOR
static void     TLan_PhyMonitor( struct net_device * );
#endif

/*
static int	TLan_PhyNop( struct net_device * );
static int	TLan_PhyInternalCheck( struct net_device * );
static int	TLan_PhyInternalService( struct net_device * );
static int	TLan_PhyDp83840aCheck( struct net_device * );
*/

static int	TLan_MiiReadReg( struct net_device *, u16, u16, u16 * );
static void	TLan_MiiSendData( u16, u32, unsigned );
static void	TLan_MiiSync( u16 );
static void	TLan_MiiWriteReg( struct net_device *, u16, u16, u16 );

static void	TLan_EeSendStart( u16 );
static int	TLan_EeSendByte( u16, u8, int );
static void	TLan_EeReceiveByte( u16, u8 *, int );
static int	TLan_EeReadByte( struct net_device *, u8, u8 * );

static TLanIntVectorFunc *TLanIntVector[TLAN_INT_NUMBER_OF_INTS] = {
	TLan_HandleInvalid,
	TLan_HandleTxEOF,
	TLan_HandleStatOverflow,
	TLan_HandleRxEOF,
	TLan_HandleDummy,
	TLan_HandleTxEOC,
	TLan_HandleStatusCheck,
	TLan_HandleRxEOC
};

static inline void
TLan_SetTimer( struct net_device *dev, u32 ticks, u32 type )
{
	TLanPrivateInfo *priv = dev->priv;
	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 = dev->priv;
	
	unregister_netdev( dev );

	if ( priv->dmaStorage ) {
		kfree( priv->dmaStorage );
	}

	release_region( dev->base_addr, 0x10 );
	
	kfree( dev );
		
	pci_set_drvdata( pdev, NULL );
} 

static struct pci_driver tlan_driver = {
	name:		"tlan",
	id_table:	tlan_pci_tbl,
	probe:		tlan_init_one,
	remove:		tlan_remove_one,	
};

static int __init tlan_probe(void)
{
	static int	pad_allocated;
	
	printk(KERN_INFO "%s", tlan_banner);
	
	TLanPadBuffer = (u8 *) kmalloc(TLAN_MIN_FRAME_SIZE, 
					GFP_KERNEL);

	if (TLanPadBuffer == NULL) {
		printk(KERN_ERR "TLAN: Could not allocate memory for pad buffer.\n");
		return -ENOMEM;
	}

	memset(TLanPadBuffer, 0, TLAN_MIN_FRAME_SIZE);
	pad_allocated = 1;

	TLAN_DBG(TLAN_DEBUG_PROBE, "Starting PCI Probe....\n");
	
	/* Use new style PCI probing. Now the kernel will
	   do most of this for us */
	pci_register_driver(&tlan_driver);

	TLAN_DBG(TLAN_DEBUG_PROBE, "Starting EISA Probe....\n");
	TLan_EisaProbe();
		
	printk(KERN_INFO "TLAN: %d device%s installed, PCI: %d  EISA: %d\n", 
		 TLanDevicesInstalled, TLanDevicesInstalled == 1 ? "" : "s",
		 tlan_have_pci, tlan_have_eisa);

	if (TLanDevicesInstalled == 0) {
		pci_unregister_driver(&tlan_driver);
		kfree(TLanPadBuffer);
		return -ENODEV;
	}
	return 0;
}
	

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;
	u8		   pci_rev;
	u16		   device_id;
	int		   reg;

	if (pdev && pci_enable_device(pdev))
		return -EIO;

	dev = init_etherdev(NULL, sizeof(TLanPrivateInfo));
	if (dev == NULL) {
		printk(KERN_ERR "TLAN: Could not allocate memory for device.\n");
		return -ENOMEM;
	}
	SET_MODULE_OWNER(dev);
	
	priv = dev->priv;

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

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

		pci_read_config_byte ( pdev, PCI_REVISION_ID, &pci_rev);

		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");
			unregister_netdev(dev);
			kfree(dev);
			return -ENODEV;
		}
		
		dev->base_addr = pci_io_base;
		dev->irq = pdev->irq;
		priv->adapterRev = pci_rev; 
		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_LIST_HEAD(&priv->tlan_tqueue.list);
	priv->tlan_tqueue.sync = 0;
	priv->tlan_tqueue.routine = (void *)(void*)TLan_tx_timeout;
	priv->tlan_tqueue.data = dev;

	spin_lock_init(&priv->lock);
	
	if (TLan_Init(dev)) {
		printk(KERN_ERR "TLAN: Could not register device.\n");
		unregister_