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Add Micrel PHY support to xilinx_ultrascale port
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Authored-by:  Pete Bone  <pete-pjb@users.noreply.github.com >
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@StefanBalt
StefanBalt committed Sep 11, 2024
1 parent 7af62b7 commit 12578a9
Showing 1 changed file with 243 additions and 0 deletions.
243 changes: 243 additions & 0 deletions source/portable/NetworkInterface/xilinx_ultrascale/x_emacpsif_physpeed.c
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Original file line number Diff line number Diff line change
Expand Up @@ -157,6 +157,7 @@ uint32_t phy_detected[ 4 ];
#define PHY_MARVELL_IDENTIFIER 0x0141
#define PHY_TI_IDENTIFIER 0x2000
#define PHY_REALTEK_IDENTIFIER 0x001c
#define PHY_MICREL_IDENTIFIER 0x0022
#define PHY_AR8035_IDENTIFIER 0x004D
#define PHY_XILINX_PCS_PMA_ID1 0x0174
#define PHY_XILINX_PCS_PMA_ID2 0x0C00
Expand Down Expand Up @@ -659,6 +660,240 @@ static uint32_t get_Realtek_phy_speed( XEmacPs * xemacpsp,
return XST_FAILURE;
}

#define LPA_IEEE_1000FD 0x0800
#define LP5_IEEE_100BTXFD 0x0100
#define LP5_IEEE_10BTFD 0x0040
#define MICREL_ID_KSZ9021 0x0161
#define MICREL_ID_KSZ9031 0x0162
#define MICREL_ID_KSZ9131 0x0164


static int set_Micrel_phy_delays( XEmacPs * EmacPsInstancePtr,
uint32_t PhyAddr )
{
int Status;
uint16_t PhyType, PhyData;

XEmacPs_PhyRead( EmacPsInstancePtr, PhyAddr, 0x3, ( u16 * ) &PhyData ); /* read value */
PhyType = ( PhyData >> 4 );

/* enabling RGMII delays */
if( PhyType == MICREL_ID_KSZ9131 ) /* KSZ9131 */
{
FreeRTOS_printf( ( "Detected KSZ9131 Ethernet PHY\n\r" ) );
/*Ctrl Delay */
u16 RxCtrlDelay = 7; /* 0..15, default 7 */
u16 TxCtrlDelay = 7; /* 0..15, default 7 */
XEmacPs_PhyWrite( EmacPsInstancePtr, PhyAddr, 0xD, 0x0002 );
XEmacPs_PhyWrite( EmacPsInstancePtr, PhyAddr, 0xE, 0x0004 ); /* Reg 0x4 */
XEmacPs_PhyWrite( EmacPsInstancePtr, PhyAddr, 0xD, 0x4002 );
XEmacPs_PhyWrite( EmacPsInstancePtr, PhyAddr, 0xE, ( TxCtrlDelay | ( RxCtrlDelay << 4 ) ) );
/*Data Delay */
u16 RxDataDelay = 7; /* 0..15, default 7 */
u16 TxDataDelay = 7; /* 0..15, default 7 */
XEmacPs_PhyWrite( EmacPsInstancePtr, PhyAddr, 0xD, 0x0002 );
XEmacPs_PhyWrite( EmacPsInstancePtr, PhyAddr, 0xE, 0x0005 ); /* Reg 0x5 */
XEmacPs_PhyWrite( EmacPsInstancePtr, PhyAddr, 0xD, 0x4002 );
XEmacPs_PhyWrite( EmacPsInstancePtr, PhyAddr, 0xE, ( RxDataDelay | ( RxDataDelay << 4 ) | ( RxDataDelay << 8 ) | ( RxDataDelay << 12 ) ) );
XEmacPs_PhyWrite( EmacPsInstancePtr, PhyAddr, 0xD, 0x0002 );
XEmacPs_PhyWrite( EmacPsInstancePtr, PhyAddr, 0xE, 0x0006 ); /* Reg 0x6 */
XEmacPs_PhyWrite( EmacPsInstancePtr, PhyAddr, 0xD, 0x4002 );
XEmacPs_PhyWrite( EmacPsInstancePtr, PhyAddr, 0xE, ( TxDataDelay | ( TxDataDelay << 4 ) | ( TxDataDelay << 8 ) | ( TxDataDelay << 12 ) ) );
/*Clock Delay */
u16 RxClockDelay = 31; /* 0..31, default 15 */
u16 TxClockDelay = 31; /* 0..31, default 15 */
XEmacPs_PhyWrite( EmacPsInstancePtr, PhyAddr, 0xD, 0x0002 );
XEmacPs_PhyWrite( EmacPsInstancePtr, PhyAddr, 0xE, 0x0008 ); /* Reg 0x8 RGMII Clock Pad Skew */
XEmacPs_PhyWrite( EmacPsInstancePtr, PhyAddr, 0xD, 0x4002 );
XEmacPs_PhyWrite( EmacPsInstancePtr, PhyAddr, 0xE, ( RxClockDelay | ( TxClockDelay << 5 ) ) );
}
else if( PhyType == MICREL_ID_KSZ9031 ) /* KSZ9031 */
{
FreeRTOS_printf( ( "Detected KSZ9031 Ethernet PHY\n\r" ) );
/*Ctrl Delay */
u16 RxCtrlDelay = 7; /* 0..15, default 7 */
u16 TxCtrlDelay = 7; /* 0..15, default 7 */
XEmacPs_PhyWrite( EmacPsInstancePtr, PhyAddr, 0xD, 0x0002 );
XEmacPs_PhyWrite( EmacPsInstancePtr, PhyAddr, 0xE, 0x0004 ); /* Reg 0x4 */
XEmacPs_PhyWrite( EmacPsInstancePtr, PhyAddr, 0xD, 0x4002 );
XEmacPs_PhyWrite( EmacPsInstancePtr, PhyAddr, 0xE, ( TxCtrlDelay | ( RxCtrlDelay << 4 ) ) );
/*Data Delay */
u16 RxDataDelay = 7; /* 0..15, default 7 */
u16 TxDataDelay = 7; /* 0..15, default 7 */
XEmacPs_PhyWrite( EmacPsInstancePtr, PhyAddr, 0xD, 0x0002 );
XEmacPs_PhyWrite( EmacPsInstancePtr, PhyAddr, 0xE, 0x0005 ); /* Reg 0x5 */
XEmacPs_PhyWrite( EmacPsInstancePtr, PhyAddr, 0xD, 0x4002 );
XEmacPs_PhyWrite( EmacPsInstancePtr, PhyAddr, 0xE, ( RxDataDelay | ( RxDataDelay << 4 ) | ( RxDataDelay << 8 ) | ( RxDataDelay << 12 ) ) );
XEmacPs_PhyWrite( EmacPsInstancePtr, PhyAddr, 0xD, 0x0002 );
XEmacPs_PhyWrite( EmacPsInstancePtr, PhyAddr, 0xE, 0x0006 ); /* Reg 0x6 */
XEmacPs_PhyWrite( EmacPsInstancePtr, PhyAddr, 0xD, 0x4002 );
XEmacPs_PhyWrite( EmacPsInstancePtr, PhyAddr, 0xE, ( TxDataDelay | ( TxDataDelay << 4 ) | ( TxDataDelay << 8 ) | ( TxDataDelay << 12 ) ) );
/*Clock Delay */
u16 RxClockDelay = 31; /* 0..31, default 15 */
u16 TxClockDelay = 31; /* 0..31, default 15 */
XEmacPs_PhyWrite( EmacPsInstancePtr, PhyAddr, 0xD, 0x0002 );
XEmacPs_PhyWrite( EmacPsInstancePtr, PhyAddr, 0xE, 0x0008 ); /* Reg 0x8 RGMII Clock Pad Skew */
XEmacPs_PhyWrite( EmacPsInstancePtr, PhyAddr, 0xD, 0x4002 );
XEmacPs_PhyWrite( EmacPsInstancePtr, PhyAddr, 0xE, ( RxClockDelay | ( TxClockDelay << 5 ) ) );
}
else if( PhyType == MICREL_ID_KSZ9021 ) /* KSZ9021 */
{
FreeRTOS_printf( ( "Detected KSZ9021 Ethernet PHY\n\r" ) );
XEmacPs_PhyWrite( EmacPsInstancePtr, PhyAddr, 0xB, 0x8104 ); /* write Reg 0x104 */
XEmacPs_PhyWrite( EmacPsInstancePtr, PhyAddr, 0xC, 0xF0F0 ); /* set write data */
XEmacPs_PhyWrite( EmacPsInstancePtr, PhyAddr, 0xB, 0x8105 ); /* write Reg 0x105 */
XEmacPs_PhyWrite( EmacPsInstancePtr, PhyAddr, 0xC, 0x0000 ); /* set write data */
}

/* Issue a reset to phy */
Status = XEmacPs_PhyRead( EmacPsInstancePtr, PhyAddr, 0x0, &PhyData );
PhyData |= 0x8000;
Status = XEmacPs_PhyWrite( EmacPsInstancePtr, PhyAddr, 0x0, PhyData );
vTaskDelay( 1 );
Status |= XEmacPs_PhyRead( EmacPsInstancePtr, PhyAddr, 0x0, &PhyData );

if( Status != XST_SUCCESS )
{
return Status;
}

return PhyType;
}

static uint32_t get_Micrel_phy_speed( XEmacPs * xemacpsp,
uint32_t phy_addr )
{
const char * name_ptr;
uint16_t temp, phy_type;
uint16_t control;
uint16_t status;
uint16_t status_speed;
uint32_t timeout_counter = 0;

/* Just to prevent compiler warnings about unused variables. */
( void ) name_ptr;


FreeRTOS_printf( ( "Start Micrel PHY program delay\r\n" ) );

if( ( phy_type = set_Micrel_phy_delays( xemacpsp, phy_addr ) ) != XST_FAILURE )
{
FreeRTOS_printf( ( "Delay Set Okay!\r\n" ) );
}
else
{
FreeRTOS_printf( ( "Delay Set Error!\r\n" ) );
}

switch( phy_type )
{
case MICREL_ID_KSZ9021:
name_ptr = "KSZ9021";
break;

case MICREL_ID_KSZ9031:
name_ptr = "KSZ9031";
break;

case MICREL_ID_KSZ9131:
name_ptr = "KSZ9131";
break;

default:
name_ptr = "!UNKNOWN!";
break;
}

FreeRTOS_printf( ( "Start %s auto-negotiation\r\n", name_ptr ) );

XEmacPs_PhyRead( xemacpsp, phy_addr, IEEE_AUTONEGO_ADVERTISE_REG, &control );
control |= IEEE_ASYMMETRIC_PAUSE_MASK;
control |= IEEE_PAUSE_MASK;
control |= ADVERTISE_100;
control |= ADVERTISE_10;
XEmacPs_PhyWrite( xemacpsp, phy_addr, IEEE_AUTONEGO_ADVERTISE_REG, control );

XEmacPs_PhyRead( xemacpsp, phy_addr, IEEE_1000_ADVERTISE_REG_OFFSET, &control );
control |= ADVERTISE_1000;
XEmacPs_PhyWrite( xemacpsp, phy_addr, IEEE_1000_ADVERTISE_REG_OFFSET, control );

XEmacPs_PhyRead( xemacpsp, phy_addr, IEEE_COPPER_SPECIFIC_CONTROL_REG, &control );
control |= ( 7 << 12 );
control |= ( 1 << 11 );
XEmacPs_PhyWrite( xemacpsp, phy_addr, IEEE_COPPER_SPECIFIC_CONTROL_REG, control );

XEmacPs_PhyRead( xemacpsp, phy_addr, IEEE_CONTROL_REG_OFFSET, &control );
control |= IEEE_CTRL_AUTONEGOTIATE_ENABLE;
control |= IEEE_STAT_AUTONEGOTIATE_RESTART;
XEmacPs_PhyWrite( xemacpsp, phy_addr, IEEE_CONTROL_REG_OFFSET, control );

XEmacPs_PhyRead( xemacpsp, phy_addr, IEEE_CONTROL_REG_OFFSET, &control );
control |= IEEE_CTRL_RESET_MASK;
XEmacPs_PhyWrite( xemacpsp, phy_addr, IEEE_CONTROL_REG_OFFSET, control );

while( 1 )
{
XEmacPs_PhyRead( xemacpsp, phy_addr, IEEE_CONTROL_REG_OFFSET, &control );

if( control & IEEE_CTRL_RESET_MASK )
{
continue;
}
else
{
break;
}
}

XEmacPs_PhyRead( xemacpsp, phy_addr, IEEE_STATUS_REG_OFFSET, &status );

FreeRTOS_printf( ( "Waiting for %s to complete Auto-negotiation.\r\n", name_ptr ) );

while( !( status & IEEE_STAT_AUTONEGOTIATE_COMPLETE ) )
{
vTaskDelay( pdMS_TO_TICKS( 1000 ) );
XEmacPs_PhyRead( xemacpsp, phy_addr, IEEE_COPPER_SPECIFIC_STATUS_REG_2, &temp );
timeout_counter++;

if( timeout_counter == 30 )
{
FreeRTOS_printf( ( "Auto negotiation error \r\n" ) );
return XST_FAILURE;
}

XEmacPs_PhyRead( xemacpsp, phy_addr, IEEE_STATUS_REG_OFFSET, &status );
}

FreeRTOS_printf( ( "%s Completed Auto-negotiation\r\n", name_ptr ) );

/* Check for high speed connection first */
XEmacPs_PhyRead( xemacpsp, phy_addr, IEEE_PARTNER_ABILITIES_3_REG_OFFSET, &status_speed );

if( status_speed & LPA_IEEE_1000FD )
{
FreeRTOS_printf( ( "Micrel PHY %s speed 1000Mbps\r\n", name_ptr ) );
return 1000;
}
else /* No high speed so check lows... */
{
XEmacPs_PhyRead( xemacpsp, phy_addr, IEEE_PARTNER_ABILITIES_1_REG_OFFSET, &status_speed );

if( status_speed & LP5_IEEE_100BTXFD )
{
FreeRTOS_printf( ( "Micrel PHY %s speed 100Mbps\r\n", name_ptr ) );
return 100;
}

if( status_speed & LP5_IEEE_10BTFD )
{
FreeRTOS_printf( ( "Micrel PHY %s speed 10Mbps\r\n", name_ptr ) );
return 10;
}
}

return XST_FAILURE;
}

/* Here is a XEmacPs_PhyRead() that returns the value of a register. */
static uint16_t XEmacPs_PhyRead2( XEmacPs * InstancePtr,
u32 PhyAddress,
Expand Down Expand Up @@ -898,6 +1133,10 @@ static const char * pcGetPHIName( uint16_t usID )
pcReturn = "Realtek RTL8212";
break;

case PHY_MICREL_IDENTIFIER:
pcReturn = "MICREL PHY";
break;

case PHY_AR8035_IDENTIFIER:
pcReturn = "Atheros_ar8035";
break;
Expand Down Expand Up @@ -945,6 +1184,10 @@ static uint32_t get_IEEE_phy_speed_US( XEmacPs * xemacpsp,
RetStatus = get_Marvell_phy_speed( xemacpsp, phy_addr );
break;

case PHY_MICREL_IDENTIFIER:
RetStatus = get_Micrel_phy_speed( xemacpsp, phy_addr );
break;

case PHY_AR8035_IDENTIFIER:
RetStatus = get_AR8035_phy_speed( xemacpsp, phy_addr );
prvSET_AR803x_TX_Timing( xemacpsp, phy_addr );
Expand Down

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