#include "UniNEnetPrivate.h"
bool UniNEnet::miiReadWord( UInt16 *dataPtr, UInt16 reg, UInt8 phy )
{
UInt32 i;
UInt32 miiReg;
WRITE_REGISTER( MIFBitBangFrame_Output,
kMIFBitBangFrame_Output_ST_default
| kMIFBitBangFrame_Output_OP_read
| phy << kMIFBitBangFrame_Output_PHYAD_shift
| reg << kMIFBitBangFrame_Output_REGAD_shift
| kMIFBitBangFrame_Output_TA_MSB );
for (i=0; i < 20; i++ )
{
miiReg = READ_REGISTER( MIFBitBangFrame_Output );
if ( miiReg & kMIFBitBangFrame_Output_TA_LSB )
{
*dataPtr = (UInt16) miiReg;
return true;
}
IODelay(10);
}
return false;
}
bool UniNEnet::miiWriteWord( UInt16 data, UInt16 reg, UInt8 phy )
{
UInt32 i;
UInt32 miiReg;
WRITE_REGISTER( MIFBitBangFrame_Output,
kMIFBitBangFrame_Output_ST_default
| kMIFBitBangFrame_Output_OP_write
| phy << kMIFBitBangFrame_Output_PHYAD_shift
| reg << kMIFBitBangFrame_Output_REGAD_shift
| kMIFBitBangFrame_Output_TA_MSB
| data );
for ( i=0; i < 20; i++ )
{
miiReg = READ_REGISTER( MIFBitBangFrame_Output );
if ( miiReg & kMIFBitBangFrame_Output_TA_LSB )
{
return true;
}
IODelay(10);
}
return false;
}
bool UniNEnet::miiResetPHY( UInt8 phy )
{
int i = MII_RESET_TIMEOUT;
UInt16 mii_control;
miiWriteWord( MII_CONTROL_RESET, MII_CONTROL, phy );
IOSleep(MII_RESET_DELAY);
while ( i > 0 )
{
if ( miiReadWord( &mii_control, MII_CONTROL, phy) == false )
return false;
if (!(mii_control & MII_CONTROL_RESET))
{
miiReadWord( &mii_control, MII_CONTROL, phy);
mii_control &= ~MII_CONTROL_ISOLATE;
miiWriteWord( mii_control, MII_CONTROL, phy );
return true;
}
IOSleep(MII_RESET_DELAY);
i -= MII_RESET_DELAY;
}
return false;
}
bool UniNEnet::miiWaitForLink( UInt8 phy )
{
int i = MII_LINK_TIMEOUT;
unsigned short mii_status;
while (i > 0)
{
if ( miiReadWord( &mii_status, MII_STATUS, phy ) == false)
return false;
if (mii_status & MII_STATUS_LINK_STATUS)
return true;
IOSleep(MII_LINK_DELAY);
i -= MII_LINK_DELAY;
}
return false;
}
bool UniNEnet::miiWaitForAutoNegotiation( UInt8 phy )
{
int i = MII_LINK_TIMEOUT;
unsigned short mii_status;
while (i > 0)
{
if ( miiReadWord( &mii_status, MII_STATUS, phy ) == false)
return false;
if (mii_status & MII_STATUS_NEGOTIATION_COMPLETE)
return true;
IOSleep(MII_LINK_DELAY);
i -= MII_LINK_DELAY;
}
return false;
}
void UniNEnet::miiRestartAutoNegotiation( UInt8 phy )
{
unsigned short mii_control;
miiReadWord( &mii_control, MII_CONTROL, phy);
mii_control |= MII_CONTROL_RESTART_NEGOTIATION;
miiWriteWord( mii_control, MII_CONTROL, phy);
#if 0
while (1)
{
miiReadWord( &mii_control, MII_CONTROL, phy );
if ((mii_control & MII_CONTROL_RESTART_NEGOTIATION) == 0)
break;
}
#endif
}
bool UniNEnet::miiFindPHY( UInt8 *phy )
{
int i;
UInt16 phyWord[2];
*phy = 0xff;
for (i = 0; i < MII_MAX_PHY; i++)
{
if ( miiReadWord( &phyWord[0], MII_STATUS, i ) == false )
{
continue;
}
if ( miiReadWord( &phyWord[1], MII_CONTROL, i ) == false )
{
continue;
}
if ( phyWord[0] == 0xffff && phyWord[1] == 0xffff )
{
continue;
}
if ( *phy == 0xff ) *phy = i;
}
return (*phy == 0xff) ? false : true;
}
bool UniNEnet::miiInitializePHY( UInt8 phy )
{
UInt16 phyWord;
miiReadWord( &phyWord, MII_CONTROL, phy );
phyWord &= ~MII_CONTROL_AUTONEGOTIATION;
miiWriteWord( phyWord, MII_CONTROL, phy );
miiReadWord( &phyWord, MII_ADVERTISEMENT, phy );
phyWord |= (MII_ANAR_100BASETX_FD | MII_ANAR_100BASETX |
MII_ANAR_10BASET_FD | MII_ANAR_10BASET );
miiWriteWord( phyWord, MII_ADVERTISEMENT, phy );
miiReadWord( &phyWord, MII_CONTROL, phy );
phyWord |= MII_CONTROL_AUTONEGOTIATION;
miiWriteWord( phyWord, MII_CONTROL, phy );
miiRestartAutoNegotiation( phy );
return true;
}