/**
* This function resets the device but preserves the options set by the user.
*
* The descriptor list could be reinitialized with the same calls to
* XLlTemac_SgSetSpace() as used in main(). Doing this is a matter of preference.
* In many cases, an OS may have resources tied up in the descriptors.
* Reinitializing in this case may bad for the OS since its resources may be
* permamently lost.
*
* @param TemacInstancePtr is a pointer to the instance of the Temac
* component.
*
* @return XST_SUCCESS if successful, else XST_FAILURE.
*
* @note None.
*
******************************************************************************/
static int TemacResetDevice(XLlTemac * TemacInstancePtr,
XLlDma * DmaInstancePtr)
{
int Status;
u8 MacSave[6];
u32 Options;
//u32 RxThreshold = 1;
//u32 TxThreshold = 1;
//u32 RxWaitbound = 0;
//u32 TxWaitbound = 0;
//XLlDma_BdRing * RxRingPtr = &XLlDma_GetRxRing(DmaInstancePtr);
//XLlDma_BdRing * TxRingPtr = &XLlDma_GetTxRing(DmaInstancePtr);
/*
* Stop LLTEMAC device
*/
XLlTemac_Stop(TemacInstancePtr);
/*
* Save the device state
*/
XLlTemac_GetMacAddress(TemacInstancePtr, MacSave);
Options = XLlTemac_GetOptions(TemacInstancePtr);
/*
* Stop and reset the device
*/
XLlTemac_Reset(TemacInstancePtr, XTE_NORESET_HARD);
/*
* Restore the state
*/
Status = XLlTemac_SetMacAddress(TemacInstancePtr, MacSave);
Status |= XLlTemac_SetOptions(TemacInstancePtr, Options);
Status |= XLlTemac_ClearOptions(TemacInstancePtr, ~Options);
if (Status != XST_SUCCESS) {
TemacUtilErrorTrap("Error restoring state after reset");
return XST_FAILURE;
}
/*
* Restart the device
*/
XLlTemac_Start(TemacInstancePtr);
return XST_SUCCESS;
}
/**
* This function resets the device but preserves the options set by the user.
*
* @param None.
*
* @return XST_SUCCESS if successful, else XST_FAILURE.
*
* @note None.
*
******************************************************************************/
int TemacResetDevice(void)
{
int Status;
u8 MacSave[6];
u32 Options;
/*
* Stop device
*/
XLlTemac_Stop(&TemacInstance);
/*
* Save the device state
*/
XLlTemac_GetMacAddress(&TemacInstance, MacSave);
Options = XLlTemac_GetOptions(&TemacInstance);
/*
* Stop and reset both the fifo and the temac the devices
*/
XLlFifo_Reset(&FifoInstance);
XLlTemac_Reset(&TemacInstance, XTE_NORESET_HARD);
/*
* Restore the state
*/
Status = XLlTemac_SetMacAddress(&TemacInstance, MacSave);
Status |= XLlTemac_SetOptions(&TemacInstance, Options);
Status |= XLlTemac_ClearOptions(&TemacInstance, ~Options);
if (Status != XST_SUCCESS) {
TemacUtilErrorTrap("Error restoring state after reset");
return XST_FAILURE;
}
return XST_SUCCESS;
}
