/**
* This function sets up the I2C controller and uses it to initialize the DP159.
*
* @param InstancePtr is a pointer to the XIic instance representing the
* I2C controller connected to the same I2C bus which the DP159 is
* is addressable from.
* @param DeviceId is the device ID of the I2C controller.
*
* @return
* - XST_SUCCESS if the I2C controller and the DP159 retimer have
* been successfully set up and initialized.
* - XST_FAILURE otherwise.
*
* @note None.
*
*******************************************************************************/
static u32 Dprx_Dp159Setup(XIic *InstancePtr, u16 DeviceId)
{
u32 Status;
XIic_Config *ConfigPtr;
ConfigPtr = XIic_LookupConfig(IIC_DEVICE_ID);
if (!ConfigPtr) {
return XST_FAILURE;
}
Status = XIic_CfgInitialize(InstancePtr, ConfigPtr,
ConfigPtr->BaseAddress);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
XIic_DynInit(InstancePtr->BaseAddress);
/* This is hardware system specific - it is up to the user to implement
* this function if needed. In some systems, a GPIO controller can reset
* the DP159. In other systems, the reset functionality may be
* accomplished using:
* void XVidC_Dp159Reset(XIic *InstancePtr, u8 Reset); */
Dprx_Dp159Reset();
/*******************/
Status = XVidC_Dp159Initialize(InstancePtr);
return Status;
}
/******************************************************************************
* This function initializes the IIC controller.
*
* @param CoreAddress contains the address of the IIC core.
*
* @return If successfull, returns 1. Otherwise, returns 0.
*
* @note None.
*
******************************************************************************/
int fmc_iic_axi_init( fmc_iic_t *pIIC, char szName[], Xuint32 CoreAddress )
{
XStatus Status;
Xuint8 StatusReg;
Xuint32 timeout = 10000;
//fmc_iic_axi_t *pContext = (fmc_iic_axi_t *)malloc( sizeof(fmc_iic_axi_t) );
//if ( pContext == NULL )
//{
// xil_printf("Failed to allocate context data for FMC-IIC-AXI implementation\n\r" );
// return 0;
//}
fmc_iic_axi_t *pContext = (fmc_iic_axi_t *) (pIIC->ContextBuffer);
if ( sizeof(fmc_iic_axi_t) > FMC_IIC_CONTEXT_BUFFER_SIZE )
{
printf("FMC_IIC_CONTEXT_BUFFER_SIZE is not large enough for fic_iic_xps_t structure (increase to %d)\n\r", sizeof(fmc_iic_axi_t) );
return 0;
}
pContext->CoreAddress = CoreAddress;
/*
* Initialize the IIC Core.
*/
Status = XIic_DynInit(pContext->CoreAddress);
if(Status != XST_SUCCESS)
{
printf("Failed to initialize I2C chain\n\r" );
return 0;
}
/*
* Check to see if the core was initialized successfully
*/
do
{
StatusReg = Xil_In8(pContext->CoreAddress + XIIC_SR_REG_OFFSET);
//xil_printf("[%s] Xil_In8(pContext->CoreAddress + XIIC_SR_REG_OFFSET) => 0x%02X\n\r", pContext->szName, StatusReg );
StatusReg = StatusReg & (XIIC_SR_RX_FIFO_EMPTY_MASK |
XIIC_SR_TX_FIFO_EMPTY_MASK |
XIIC_SR_BUS_BUSY_MASK);
} while ( (timeout-- > 0) &&
(StatusReg != (XIIC_SR_RX_FIFO_EMPTY_MASK | XIIC_SR_TX_FIFO_EMPTY_MASK)) );
/*
* Initialize the IIC structure
*/
pIIC->uVersion = 1;
strcpy( pIIC->szName, szName );
pIIC->pContext = (void *)pContext;
pIIC->fpGpoRead = &fmc_iic_axi_GpoRead;
pIIC->fpGpoWrite = &fmc_iic_axi_GpoWrite;
pIIC->fpIicRead = &fmc_iic_axi_IicRead;
pIIC->fpIicWrite = &fmc_iic_axi_IicWrite;
pIIC->fpIicERead = &fmc_iic_axi_IicERead;
pIIC->fpIicEWrite = &fmc_iic_axi_IicEWrite;
return 1;
}
/******************************************************************************
*
* Initialize the IIC core for Dynamic Functionality.
*
* @param InstancePtr points to the Iic instance to be worked on.
*
* @return XST_SUCCESS if Successful else XST_FAILURE.
*
* @note None.
*
******************************************************************************/
int XIic_DynamicInitialize(XIic *InstancePtr)
{
int Status;
Xil_AssertNonvoid(InstancePtr != NULL);
Status = XIic_DynInit(InstancePtr->BaseAddress);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
return XST_SUCCESS;
}
/******************************************************************************
* This function initializes the IIC controller.
*
* @param CoreAddress contains the address of the IIC core.
*
* @return If successfull, returns 1. Otherwise, returns 0.
*
* @note None.
*
******************************************************************************/
int fmc_ipmi_iic_init( Xuint32 CoreAddress )
{
XStatus Status;
/*
* Initialize the IIC Core.
*/
Status = XIic_DynInit(CoreAddress);
if(Status != XST_SUCCESS)
{
xil_printf("Failed to initialize I2C chain\n\r" );
return 0;
}
return 1;
}
