nicmedia.c

3com3c905网卡驱动程序

/*******************************************************************************
*** Note: Copy rights resevered to Beijing Pacific Linkair Communications Co. 
***
*** File Name: NICMedia.c
*** Purpose  : Setup the Media 
***
*** Author   : Guangzhao Tian
*** Modified : By Guangzhao Tian at 2000/9/11
***
**/

#include "NICMacro.h"
#include "NICWinReg.h"
#include "NICCommand.h"
#include "NICEeprom.h"
#include "NICData.h"
#include "NICHelper.h"
#include "NICMii.h"
#include "NICExport.h"

/****************************************************************************************
*** This routine checks whether autoselection is specified. 
*** If it does, it calls MainAutoSelectionRoutine ,
***	else, for non-autoselect case, calls ProgramMII.
**/
NIC_STATUS NIC_MediaSetup(IN PNIC_INFORMATION pAdapter )
{
	USHORT wOptionAvailable = 0;

	ULONG InternalConfig = 0;
	ULONG InternalConfigNew=0;
	ULONG InternalConfig0 = 0;
	ULONG InternalConfig1 = 0;

	NIC_STATUS nicStatus;

	USHORT MacControl = 0;
	BOOLEAN Handles100Mbit = FALSE;

	DebugMsg("\n******************\nNow We will Setup the Media... \n");
	
	pAdapter->LinkInfo.ConfigConnector = CONNECTOR_UNKNOWN;
	pAdapter->LinkInfo.Connector = CONNECTOR_UNKNOWN;
	pAdapter->LinkInfo.AutoSelect = FALSE;
    pAdapter->LinkInfo.FullDuplexEnable=FALSE;
    pAdapter->LinkInfo.FullDuplexEnable=FALSE;

    pAdapter->LinkInfo.FlowControlSupported=TRUE;
    
	/* Read the MEDIA OPTIONS to see what connectors are available */
 	NIC_COMMAND ( pAdapter->IoBaseAddress , COMMAND_SELECT_REGISTER_WINDOW | REGISTER_WINDOW_3);
	wOptionAvailable = NIC_READ_PORT_USHORT( pAdapter->IoBaseAddress , MEDIA_OPTIONS_REGISTER );
      pAdapter->LinkInfo.MediaOptions=wOptionAvailable;

	/* Read the internal config through EEPROM since reset invalidates the normal register value. */
 	 if ( NIC_STATUS_SUCCESS != NIC_EEPROMRead (pAdapter,EEPROM_INTERNAL_CONFIG_WORD_0,
		                                           (PUSHORT)&InternalConfig0 ) )
		{   return NIC_STATUS_FAILURE;  }

	if ( NIC_STATUS_SUCCESS !=  NIC_EEPROMRead(pAdapter, EEPROM_INTERNAL_CONFIG_WORD_1,
		                                           (PUSHORT)&InternalConfig1) )
		{   return NIC_STATUS_FAILURE; 	}

	InternalConfig = InternalConfig0 | (InternalConfig1 <<16);   

	/* Read the current value of the InternalConfig register. If it's different
	    from the EEPROM values, than write it out using the EEPROM values.
	   This is done since a global reset may invalidate the register value on
	   some ASICs. Also, writing to InternalConfig may reset the PHY on some ASICs. */

	NIC_COMMAND(pAdapter->IoBaseAddress ,COMMAND_SELECT_REGISTER_WINDOW | REGISTER_WINDOW_3);
	InternalConfigNew = NIC_READ_PORT_ULONG( pAdapter->IoBaseAddress,INTERNAL_CONFIG_REGISTER );

	if (InternalConfig != InternalConfigNew)
	{
		NIC_WRITE_PORT_ULONG(pAdapter->IoBaseAddress ,INTERNAL_CONFIG_REGISTER,InternalConfig);
	}
	
	pAdapter->LinkInfo.ConfigConnector =(InternalConfig & INTERNAL_CONFIG_TRANSCEIVER_MASK) >> 20;

 	/*  Now try to decied the Link Info Params, first Get the connector to use.
	if (pAdapter->LinkInfo.ConfigConnector == CONNECTOR_UNKNOWN) */
	{
		pAdapter->LinkInfo.Connector = pAdapter->LinkInfo.ConfigConnector;
    	if (InternalConfig & INTERNAL_CONFIG_AUTO_SELECT)	pAdapter->LinkInfo.AutoSelect = TRUE;
	} 

	/* If auto selection of connector was specified, do it now... */
 	if (pAdapter->LinkInfo.AutoSelect)
	{
	    DebugMsg(" Set the Adapter media in Auto Select Mode ... \n");
 		NIC_COMMAND(pAdapter->IoBaseAddress, COMMAND_STATISTICS_DISABLE);      
		NIC_MediaAutoSelect(pAdapter, wOptionAvailable);
	    DebugMsg(" Auto Select Mode Setting Done ! \n");
	}
    
	else 
	{
	    /* MII connector needs to be initialized and the data rates
	       set up even in the non-autoselect case */
	    DebugMsg(" Set the Adapter media in forced-mode ... \n");
	
		if ( (pAdapter->LinkInfo.Connector ==  CONNECTOR_MII             ) ||
		     (pAdapter->LinkInfo.Connector ==  CONNECTOR_AUTONEGOTIATION ) ) 
		{
			NIC_MediaProgramMII(pAdapter, CONNECTOR_MII);
		}
		else 
		{			
			if ( (pAdapter->LinkInfo.Connector ==  CONNECTOR_100BASEFX) ||
			     (pAdapter->LinkInfo.Connector == CONNECTOR_100BASETX ) )
			{		    
				pAdapter->LinkInfo.LinkSpeed = LINK_SPEED_100;			
			}
			else 
			{			
				pAdapter->LinkInfo.LinkSpeed = LINK_SPEED_10;			
			}
		}	
	    
         /*Set up the Internal Config Register using the Connector Value 
                       gotten from Internal Config Register*/
	   NIC_MediaSetupConnector(pAdapter, pAdapter->LinkInfo.Connector);

	   DebugMsg(" Forced Mode Setting Done ! \n");
	} 
	
	/* Check link speed and duplex settings before doing anything else.
	  If the call succeeds, we know the link is up, so we'll update the link state. */
	 DebugMsg("  Link Speed Get ...");
	if ( NIC_MIILinkSpeedGet(pAdapter, &Handles100Mbit) ) 
	{
		pAdapter->LinkInfo.LinkSpeed = 	(Handles100Mbit) ? LINK_SPEED_100 : LINK_SPEED_10;
		pAdapter->LinkInfo.LinkState = LINK_UP;
	}
	else 
		pAdapter->LinkInfo.LinkState = LINK_DOWN_AT_INIT;
	  DebugMsg(" Done ! \n");
      
	/* Set up duplex mode */
      DebugMsg(" Setup Duplex Mode ...");
 	NIC_COMMAND( pAdapter, COMMAND_SELECT_REGISTER_WINDOW | REGISTER_WINDOW_3);

	MacControl = NIC_READ_PORT_USHORT(pAdapter, MAC_CONTROL_REGISTER);
    	
	if (pAdapter->LinkInfo.FullDuplexEnable) 
	{
		/* Set Full duplex in MacControl register */							
		MacControl |= MAC_CONTROL_FULL_DUPLEX_ENABLE;                      
		DebugMsg("  Changed link to full duplex. \n");

		/* Since we're switching to full duplex, enable flow control.*/
		if (pAdapter->LinkInfo.FlowControlSupported)
		{
			MacControl |=  MAC_CONTROL_FLOW_CONTROL_ENABLE;	
			pAdapter->LinkInfo.FlowControlEnable = TRUE;
		}
	}
	else 
	{
		/* Set Half duplex in MacControl register */
		MacControl &= ~MAC_CONTROL_FULL_DUPLEX_ENABLE;                            
		DebugMsg(" Change link to half duplex ! \n");		

		/* Since we're switching to half duplex, disable flow control */
		if (pAdapter->LinkInfo.FlowControlSupported)
		{		
			MacControl &= ~ MAC_CONTROL_FLOW_CONTROL_ENABLE;
			pAdapter->LinkInfo.FlowControlEnable = FALSE;                   
		}         
	}

	NIC_WRITE_PORT_USHORT(pAdapter,MAC_CONTROL_REGISTER,MacControl);
 	  DebugMsg(" Done ! \n");
     
    if (NIC_TxResetAndEnable(pAdapter) != NIC_STATUS_SUCCESS)
    { 
	   	 DebugMsg(" Error: cannot Reset and Enable Tx after setup the media ! \n");
         return NIC_STATUS_FAILURE;
	}

	if (NIC_RxResetAndEnable(pAdapter) != NIC_STATUS_SUCCESS)
    {
	   	 DebugMsg(" Error: cannot Reset and Enable Rx after setup the media ! \n");
		 return NIC_STATUS_FAILURE;
	}
    
 /*This is for advertisement of flow control.  We only need to  call this if the adapter 
	      is using flow control, in Autoselect mode and not a Tornado board. 
    
	if ( ( pAdapter->Hardware.AutoSelect &&  pAdapter->LinkInfo.FlowControlEnable) &&
	     (pAdapter->Hardware.DeviceId != NIC_PCI_DEVICE_ID_9200) &&
	     (pAdapter->Hardware.DeviceId != NIC_PCI_DEVICE_ID_9805)) 
	{		
		tc90x_FlowControl(pAdapter);
	} */
    	
    DebugMsg("Media setup-- Done! \n********************************\n");

	return NIC_STATUS_SUCCESS;
}

/***********************************************************************************
****  If autoselection is set, determine the connector and link speed
***     by trying the various transceiver types.
**/
NIC_STATUS NIC_MediaAutoSelect(IN PNIC_INFORMATION pAdapter,IN USHORT Options)
{
	USHORT index;

	pAdapter->LinkInfo.Connector = CONNECTOR_UNKNOWN;