uint32_t
PHY_start_auto_negotiate(volatile tms570_mdio_t *mdioBaseAddr, uint32_t phyAddr, unsigned short advVal)
{
volatile unsigned short regContent = 0;
/* Enable Auto Negotiation */
if (MDIOPhyRegRead(mdioBaseAddr, phyAddr, PHY_BMCR, ®Content) != TRUE) {
return FALSE;
}
regContent |= PHY_AUTONEG_EN_m;
MDIOPhyRegWrite(mdioBaseAddr, phyAddr, PHY_BMCR, regContent); /* originally ...HY_BMCR, PHY_RESET_m | PHY_AUTONEG_EN_m); */
/* Write Auto Negotiation capabilities */
if (MDIOPhyRegRead(mdioBaseAddr, phyAddr, PHY_ANAR, ®Content) != TRUE) {
return FALSE;
}
regContent |= advVal;
MDIOPhyRegWrite(mdioBaseAddr, phyAddr, PHY_ANAR, regContent);
/* Start Auto Negotiation */
MDIOPhyRegRead(mdioBaseAddr, phyAddr, PHY_BMCR, ®Content);
regContent |= PHY_AUTONEG_REST;
MDIOPhyRegWrite(mdioBaseAddr, phyAddr, PHY_BMCR, regContent);
return TRUE; /* request to PHY through EMAC for autonegotiation established */
}
/**
* \brief This function ask the phy device to start auto negotiation.
*
*
* \param mdioBaseAddr Base Address of the MDIO Module Registers.
* \param phyAddr PHY Adress.
* \param advVal Autonegotiation advertisement value
* \param gigAdvVal Gigabit capability advertisement value
* advVal can take the following any OR combination of the values \n
* PHY_100BTX - 100BaseTX \n
* PHY_100BTX_FD - Full duplex capabilty for 100BaseTX \n
* PHY_10BT - 10BaseT \n
* PHY_10BT_FD - Full duplex capability for 10BaseT \n
* gigAdvVal can take one of the following values \n
* PHY_NO_1000BT - No 1000Base-T capability\n
* PHY_1000BT_FD - Full duplex capabilty for 1000 Base-T \n
* PHY_1000BT_HD - Half duplex capabilty for 1000 Base-T \n
* FALSE - It is passed as an argument if phy dosen't support
* Giga bit capability
*
* \return status after autonegotiation \n
* TRUE if autonegotiation started
* FALSE if autonegotiation not started
*
**/
unsigned int PhyAutoNegotiate(unsigned int mdioBaseAddr, unsigned int phyAddr,
unsigned short *advPtr, unsigned short *gigAdvPtr)
{
volatile unsigned short data;
volatile unsigned short anar;
if(MDIOPhyRegRead(mdioBaseAddr, phyAddr, PHY_BCR, &data) != TRUE )
{
return FALSE;
}
data |= PHY_AUTONEG_ENABLE;
if (*gigAdvPtr != 0)
{
/* Set phy for gigabit speed */
data &= PHY_SPEED_MASK;
data |= PHY_SPEED_1000MBPS;
}
/* Enable Auto Negotiation */
MDIOPhyRegWrite(mdioBaseAddr, phyAddr, PHY_BCR, data);
if(MDIOPhyRegRead(mdioBaseAddr, phyAddr, PHY_BCR, &data) != TRUE )
{
return FALSE;
}
/* Write Auto Negotiation capabilities */
MDIOPhyRegRead(mdioBaseAddr, phyAddr, PHY_AUTONEG_ADV, &anar);
anar &= ~PHY_ADV_VAL_MASK;
MDIOPhyRegWrite(mdioBaseAddr, phyAddr, PHY_AUTONEG_ADV, (anar |(*advPtr)));
/* Write Auto Negotiation Gigabyte capabilities */
anar = 0;
MDIOPhyRegRead(mdioBaseAddr, phyAddr, PHY_1000BT_CONTROL, &anar);
anar &= ~PHY_GIG_ADV_VAL_MASK;
MDIOPhyRegWrite(mdioBaseAddr, phyAddr, PHY_1000BT_CONTROL,
(anar |(*gigAdvPtr)));
data |= PHY_AUTONEG_RESTART;
/* Start Auto Negotiation */
MDIOPhyRegWrite(mdioBaseAddr, phyAddr, PHY_BCR, data);
return TRUE;
}
void
PHY_reset(volatile tms570_mdio_t *mdioBaseAddr, uint32_t phyAddr)
{
volatile unsigned short regContent;
MDIOPhyRegWrite(mdioBaseAddr, phyAddr, PHY_BMCR, PHY_RESET_m);
while (MDIOPhyRegRead(mdioBaseAddr, phyAddr, PHY_BMCR, ®Content) & PHY_RESET_m);
}
void
PHY_Power_Up(volatile tms570_mdio_t *mdioBaseAddr, uint32_t phyAddr)
{
volatile unsigned short regContent;
MDIOPhyRegRead(mdioBaseAddr, phyAddr, PHY_BMCR, ®Content);
MDIOPhyRegWrite(mdioBaseAddr, phyAddr, PHY_BMCR, regContent & ~PHY_POWERDOWN_m);
}
/**
* \brief Configures the PHY for a given speed and duplex mode.
*
* \param mdioBaseAddr Base Address of the MDIO Module Registers.
* \param phyAddr PHY Adress.
* \param speed Speed to be enabled
* \param duplexMode Duplex Mode
*
* \return status after configuring \n
* TRUE if configuration successful
* FALSE if configuration failed
*
**/
unsigned int PhyConfigure(unsigned int mdioBaseAddr, unsigned int phyAddr,
unsigned short speed, unsigned short duplexMode)
{
/* Set the configurations */
MDIOPhyRegWrite(mdioBaseAddr, phyAddr, PHY_BCR, (speed | duplexMode));
return TRUE;
}
void
PHY_MII_mode_set(volatile tms570_mdio_t *mdioBaseAddr, uint32_t phyAddr, uint32_t mode)
{
volatile unsigned short regContent;
/* Read the RBR of the PHY */
MDIOPhyRegRead(mdioBaseAddr, phyAddr, PHY_RBR, ®Content);
/* Write the RBR of the PHY */
regContent &= 0x1f;
regContent |= ( mode << 5 );
MDIOPhyRegWrite(mdioBaseAddr, phyAddr, PHY_RBR, regContent);
}
/**
* \brief Disables Loop Back mode
*
* \param mdioBaseAddr Base Address of the MDIO Module Registers.
* \param phyAddr PHY Adress.
*
* \return status after enabling. \n
* TRUE if loop back is disabled \n
* FALSE if not able to disable
*
**/
unsigned int PhyLoopBackDisable(unsigned int mdioBaseAddr, unsigned int phyAddr)
{
unsigned short data;
if(MDIOPhyRegRead(mdioBaseAddr, phyAddr, PHY_BCR, &data) != TRUE )
{
return FALSE;
}
data &= ~(PHY_LPBK_ENABLE);
/* Disable loop back */
MDIOPhyRegWrite(mdioBaseAddr, phyAddr, PHY_BCR, data);
return TRUE;
}
/**
* \brief Resets the PHY
*
* \param mdioBaseAddr Base Address of the MDIO Module Registers.
* \param phyAddr PHY Adress.
* \param speed Speed to be enabled
* \param duplexMode Duplex Mode
*
* \return status after configuring \n
* TRUE if configuration successful
* FALSE if configuration failed
*
**/
unsigned int PhyReset(unsigned int mdioBaseAddr, unsigned int phyAddr)
{
unsigned short data;
data = PHY_SOFTRESET;
/* Reset the phy */
MDIOPhyRegWrite(mdioBaseAddr, phyAddr, PHY_BCR, data);
/* wait till the reset bit is auto cleared */
while(data & PHY_SOFTRESET)
{
/* Read the reset */
if(MDIOPhyRegRead(mdioBaseAddr, phyAddr, PHY_BCR, &data) != TRUE)
{
return FALSE;
}
}
return TRUE;
}
/**
* \brief Writes a register with the input
*
* \param mdioBaseAddr Base Address of the MDIO Module Registers.
* \param phyAddr PHY Adress.
* \param regIdx Index of the register to be read
* \param regValAdr value to be written
*
* \return None
*
**/
void PhyRegWrite(unsigned int mdioBaseAddr, unsigned int phyAddr,
unsigned int regIdx, unsigned short regVal)
{
MDIOPhyRegWrite(mdioBaseAddr, phyAddr, regIdx, regVal);
}