/**
*
* Register a fast handler function for a specific interrupt ID. The handler
* function will be called when an interrupt occurs for the given interrupt ID.
*
* @param BaseAddress is the base address of the interrupt controller
* whose vector table will be modified.
* @param InterruptId is the interrupt ID to be associated with the input
* handler.
* @param FastHandler is the function pointer that will be called when
* interrupt occurs
*
* @return None.
*
* @note
*
* Note that this function has no effect if the input base address is invalid.
*
******************************************************************************/
void XIntc_RegisterFastHandler(u32 BaseAddress, u8 Id,
XFastInterruptHandler FastHandler)
{
u32 CurrentIER;
u32 Mask;
u32 Imr;
CurrentIER = XIntc_In32(BaseAddress + XIN_IER_OFFSET);
/* Convert from integer id to bit mask */
Mask = XIntc_BitPosMask[Id];
if (CurrentIER & Mask) {
/* Disable Interrupt if it was enabled */
CurrentIER = XIntc_In32(BaseAddress + XIN_IER_OFFSET);
XIntc_Out32(BaseAddress + XIN_IER_OFFSET,(CurrentIER & ~Mask));
}
XIntc_Out32(BaseAddress + XIN_IVAR_OFFSET + (Id * 4),
(u32) FastHandler);
Imr = XIntc_In32(BaseAddress + XIN_IMR_OFFSET);
XIntc_Out32(BaseAddress + XIN_IMR_OFFSET, Imr | Mask);
/* Enable Interrupt if it was enabled before calling this function */
if (CurrentIER & Mask) {
CurrentIER = XIntc_In32(BaseAddress + XIN_IER_OFFSET);
XIntc_Out32(BaseAddress + XIN_IER_OFFSET,(CurrentIER | Mask));
}
}
/**
*
* Updates the interrupt table with the Null Handler and NULL arguments at the
* location pointed at by the Id. This effectively disconnects that interrupt
* source from any handler. The interrupt is disabled also. In Cascade mode,
* disconnects handler from Slave controller handler table depending on the
* interrupt Id.
*
* @param InstancePtr is a pointer to the XIntc instance to be worked on.
* @param Id contains the ID of the interrupt source and should be in the
* range of 0 to XPAR_INTC_MAX_NUM_INTR_INPUTS - 1 with 0 being
* the highest priority interrupt.
*
* @return None.
*
* @note None.
*
****************************************************************************/
void XIntc_Disconnect(XIntc * InstancePtr, u8 Id)
{
u32 CurrentIER;
u32 Mask;
XIntc_Config *CfgPtr;
/*
* Assert the arguments
*/
Xil_AssertVoid(InstancePtr != NULL);
Xil_AssertVoid(Id < XPAR_INTC_MAX_NUM_INTR_INPUTS);
Xil_AssertVoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
/*
* Disable the interrupt such that it won't occur while disconnecting
* the handler, only disable the specified interrupt id without
* modifying the other interrupt ids
*/
/* Disconnect Handlers for Slave controllers in Cascade Mode */
if (Id > 31) {
CfgPtr = XIntc_LookupConfig(Id/32);
CurrentIER = XIntc_In32(CfgPtr->BaseAddress + XIN_IER_OFFSET);
/* Convert from integer id to bit mask */
Mask = XIntc_BitPosMask[(Id%32)];
XIntc_Out32(CfgPtr->BaseAddress + XIN_IER_OFFSET,
(CurrentIER & ~Mask));
/*
* Disconnect the handler and connect a stub, the callback
* reference must be set to this instance to allow unhandled
* interrupts to be tracked
*/
CfgPtr->HandlerTable[Id%32].Handler = StubHandler;
CfgPtr->HandlerTable[Id%32].CallBackRef = InstancePtr;
}
/* Disconnect Handlers for Master/primary controller */
else {
CurrentIER = XIntc_In32(InstancePtr->BaseAddress +
XIN_IER_OFFSET);
/* Convert from integer id to bit mask */
Mask = XIntc_BitPosMask[Id];
XIntc_Out32(InstancePtr->BaseAddress + XIN_IER_OFFSET,
(CurrentIER & ~Mask));
InstancePtr->CfgPtr->HandlerTable[Id%32].Handler =
StubHandler;
InstancePtr->CfgPtr->HandlerTable[Id%32].CallBackRef =
InstancePtr;
}
}
/**
*
* Disables the interrupt source provided as the argument Id such that the
* interrupt controller will not cause interrupts for the specified Id. The
* interrupt controller will continue to hold an interrupt condition for the
* Id, but will not cause an interrupt.
*
* @param InstancePtr is a pointer to the XIntc instance to be worked on.
* @param Id contains the ID of the interrupt source and should be in the
* range of 0 to XPAR_INTC_MAX_NUM_INTR_INPUTS - 1 with 0 being the
* highest priority interrupt.
*
* @return None.
*
* @note None.
*
****************************************************************************/
void XIntc_Disable(XIntc * InstancePtr, u8 Id)
{
u32 CurrentIER;
u32 Mask;
/*
* Assert the arguments
*/
Xil_AssertVoid(InstancePtr != NULL);
Xil_AssertVoid(Id < XPAR_INTC_MAX_NUM_INTR_INPUTS);
Xil_AssertVoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
/*
* The Id is used to create the appropriate mask for the
* desired bit position. Id currently limited to 0 - 31
*/
Mask = XIntc_BitPosMask[Id];
/*
* Disable the selected interrupt source by reading the interrupt enable
* register and then modifying only the specified interrupt id
*/
CurrentIER = XIntc_In32(InstancePtr->BaseAddress + XIN_IER_OFFSET);
XIntc_Out32(InstancePtr->BaseAddress + XIN_IER_OFFSET,
(CurrentIER & ~Mask));
}
/**
*
* Updates the interrupt table with the Null Handler and NULL arguments at the
* location pointed at by the Id. This effectively disconnects that interrupt
* source from any handler. The interrupt is disabled also.
*
* @param InstancePtr is a pointer to the XIntc instance to be worked on.
* @param Id contains the ID of the interrupt source and should be in the
* range of 0 to XPAR_INTC_MAX_NUM_INTR_INPUTS - 1 with 0 being the
* highest priority interrupt.
*
* @return None.
*
* @note None.
*
****************************************************************************/
void XIntc_Disconnect(XIntc * InstancePtr, u8 Id)
{
u32 CurrentIER;
u32 Mask;
/*
* Assert the arguments
*/
Xil_AssertVoid(InstancePtr != NULL);
Xil_AssertVoid(Id < XPAR_INTC_MAX_NUM_INTR_INPUTS);
Xil_AssertVoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
/*
* Disable the interrupt such that it won't occur while disconnecting
* the handler, only disable the specified interrupt id without
* modifying the other interrupt ids
*/
CurrentIER = XIntc_In32(InstancePtr->BaseAddress + XIN_IER_OFFSET);
Mask = XIntc_BitPosMask[Id];/* convert from integer id to bit mask */
XIntc_Out32(InstancePtr->BaseAddress + XIN_IER_OFFSET,
(CurrentIER & ~Mask));
/*
* Disconnect the handler and connect a stub, the callback reference
* must be set to this instance to allow unhandled interrupts to be
* tracked
*/
InstancePtr->CfgPtr->HandlerTable[Id].Handler = StubHandler;
InstancePtr->CfgPtr->HandlerTable[Id].CallBackRef = InstancePtr;
}
XStatus
init_ll_fifo(struct xemac_s *xemac)
{
xlltemacif_s *xlltemacif = (xlltemacif_s *)(xemac->state);
#if NO_SYS
struct xtopology_t *xtopologyp = &xtopology[xemac->topology_index];
#endif
/* initialize ll fifo */
XLlFifo_Initialize(&xlltemacif->llfifo,
XLlTemac_LlDevBaseAddress(&xlltemacif->lltemac));
/* Clear any pending FIFO interrupts */
XLlFifo_IntClear(&xlltemacif->llfifo, XLLF_INT_ALL_MASK);
/* enable fifo interrupts */
XLlFifo_IntEnable(&xlltemacif->llfifo, XLLF_INT_ALL_MASK);
#if NO_SYS
/* Register temac interrupt with interrupt controller */
XIntc_RegisterHandler(xtopologyp->intc_baseaddr,
xlltemacif->lltemac.Config.TemacIntr,
(XInterruptHandler)xlltemac_error_handler,
&xlltemacif->lltemac);
/* connect & enable FIFO interrupt */
XIntc_RegisterHandler(xtopologyp->intc_baseaddr,
xlltemacif->lltemac.Config.LLFifoIntr,
(XInterruptHandler)xllfifo_intr_handler,
xemac);
/* Enable EMAC interrupts in the interrupt controller */
do {
/* read current interrupt enable mask */
unsigned int cur_mask = XIntc_In32(xtopologyp->intc_baseaddr + XIN_IER_OFFSET);
/* form new mask enabling SDMA & ll_temac interrupts */
cur_mask = cur_mask
| (1 << xlltemacif->lltemac.Config.LLFifoIntr)
| (1 << xlltemacif->lltemac.Config.TemacIntr);
/* set new mask */
XIntc_mEnableIntr(xtopologyp->intc_baseaddr, cur_mask);
} while (0);
#else
/* connect & enable TEMAC interrupts */
register_int_handler(xlltemacif->lltemac.Config.TemacIntr,
(XInterruptHandler)xlltemac_error_handler,
&xlltemacif->lltemac);
enable_interrupt(xlltemacif->lltemac.Config.TemacIntr);
/* connect & enable FIFO interrupts */
register_int_handler(xlltemacif->lltemac.Config.LLFifoIntr,
(XInterruptHandler)xllfifo_intr_handler,
xemac);
enable_interrupt(xlltemacif->lltemac.Config.LLFifoIntr);
#endif
return 0;
}
/**
*
* Enables the interrupt source provided as the argument Id. Any pending
* interrupt condition for the specified Id will occur after this function is
* called. In Cascade mode, enables corresponding interrupt of Slave controllers
* depending on the Id.
*
* @param InstancePtr is a pointer to the XIntc instance to be worked on.
* @param Id contains the ID of the interrupt source and should be in the
* range of 0 to XPAR_INTC_MAX_NUM_INTR_INPUTS - 1 with 0 being
* the highest priority interrupt.
*
* @return None.
*
* @note None.
*
****************************************************************************/
void XIntc_Enable(XIntc * InstancePtr, u8 Id)
{
u32 CurrentIER;
u32 Mask;
XIntc_Config *CfgPtr;
/*
* Assert the arguments
*/
Xil_AssertVoid(InstancePtr != NULL);
Xil_AssertVoid(Id < XPAR_INTC_MAX_NUM_INTR_INPUTS);
Xil_AssertVoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
if (Id > 31) {
/* Enable user required Id in Slave controller */
CfgPtr = XIntc_LookupConfig(Id/32);
CurrentIER = XIntc_In32(CfgPtr->BaseAddress + XIN_IER_OFFSET);
/* Convert from integer id to bit mask */
Mask = XIntc_BitPosMask[(Id%32)];
XIntc_Out32(CfgPtr->BaseAddress + XIN_IER_OFFSET,
(CurrentIER | Mask));
}
else {
/*
* The Id is used to create the appropriate mask for the
* desired bit position.
*/
Mask = XIntc_BitPosMask[Id];
/*
* Enable the selected interrupt source by reading the
* interrupt enable register and then modifying only the
* specified interrupt id enable
*/
CurrentIER = XIntc_In32(InstancePtr->BaseAddress +
XIN_IER_OFFSET);
XIntc_Out32(InstancePtr->BaseAddress + XIN_IER_OFFSET,
(CurrentIER | Mask));
}
}
/**
*
* Allows software to simulate an interrupt in the interrupt controller. This
* function will only be successful when the interrupt controller has been
* started in simulation mode. Once it has been started in real mode,
* interrupts cannot be simulated. A simulated interrupt allows the interrupt
* controller to be tested without any device to drive an interrupt input
* signal into it.
*
* @param InstancePtr is a pointer to the XIntc instance to be worked on.
* @param Id is the interrupt ID for which to simulate an interrupt.
*
* @return
* - XST_SUCCESS if successful
* - XST_FAILURE if the interrupt could not be
* simulated because the interrupt controller is or
* has previously been in real mode.
*
* @note None.
*
******************************************************************************/
int XIntc_SimulateIntr(XIntc * InstancePtr, u8 Id)
{
u32 Mask;
u32 MasterEnable;
/*
* Assert the arguments
*/
XASSERT_NONVOID(InstancePtr != NULL);
XASSERT_NONVOID(InstancePtr->IsReady == XCOMPONENT_IS_READY);
XASSERT_NONVOID(Id < XPAR_INTC_MAX_NUM_INTR_INPUTS);
/* Get the contents of the master enable register and determine if
* hardware interrupts have already been enabled, if so, this is a write
* once bit such that simulation can't be done at this point because
* the ISR register is no longer writable by software
*/
MasterEnable = XIntc_In32(InstancePtr->BaseAddress + XIN_MER_OFFSET);
if (MasterEnable & XIN_INT_HARDWARE_ENABLE_MASK) {
return XST_FAILURE;
}
/*
* The Id is used to create the appropriate mask for the
* desired bit position. Id currently limited to 0 - 31
*/
Mask = XIntc_BitPosMask[Id];
/*
* Enable the selected interrupt source by reading the interrupt enable
* register and then modifying only the specified interrupt id enable
*/
XIntc_Out32(InstancePtr->BaseAddress + XIN_ISR_OFFSET, Mask);
/* indicate the interrupt was successfully simulated */
return XST_SUCCESS;
}
xComPortHandle xSerialPortInitMinimal( unsigned long ulWantedBaud, unsigned portBASE_TYPE uxQueueLength )
{
unsigned long ulControlReg, ulMask;
/* NOTE: The baud rate used by this driver is determined by the hardware
parameterization of the UART Lite peripheral, and the baud value passed to
this function has no effect. */
/* Create the queues used to hold Rx and Tx characters. */
xRxedChars = xQueueCreate( uxQueueLength, ( unsigned portBASE_TYPE ) sizeof( signed char ) );
xCharsForTx = xQueueCreate( uxQueueLength + 1, ( unsigned portBASE_TYPE ) sizeof( signed char ) );
if( ( xRxedChars ) && ( xCharsForTx ) )
{
/* Disable the interrupt. */
XUartLite_mDisableIntr( XPAR_RS232_UART_BASEADDR );
/* Flush the fifos. */
ulControlReg = XIo_In32( XPAR_RS232_UART_BASEADDR + XUL_STATUS_REG_OFFSET );
XIo_Out32( XPAR_RS232_UART_BASEADDR + XUL_CONTROL_REG_OFFSET, ulControlReg | XUL_CR_FIFO_TX_RESET | XUL_CR_FIFO_RX_RESET );
/* Enable the interrupt again. The interrupt controller has not yet been
initialised so there is no chance of receiving an interrupt until the
scheduler has been started. */
XUartLite_mEnableIntr( XPAR_RS232_UART_BASEADDR );
/* Enable the interrupt in the interrupt controller while maintaining
all the other bit settings. */
ulMask = XIntc_In32( ( XPAR_OPB_INTC_0_BASEADDR + XIN_IER_OFFSET ) );
ulMask |= XPAR_RS232_UART_INTERRUPT_MASK;
XIntc_Out32( ( XPAR_OPB_INTC_0_BASEADDR + XIN_IER_OFFSET ), ( ulMask ) );
XIntc_mAckIntr( XPAR_INTC_SINGLE_BASEADDR, 2 );
}
return ( xComPortHandle ) 0;
}
/**
*
* Allows software to simulate an interrupt in the interrupt controller. This
* function will only be successful when the interrupt controller has been
* started in simulation mode. Once it has been started in real mode,
* interrupts cannot be simulated. A simulated interrupt allows the interrupt
* controller to be tested without any device to drive an interrupt input
* signal into it. In Cascade mode writes to ISR of appropraite Slave
* controller depending on Id.
*
* @param InstancePtr is a pointer to the XIntc instance to be worked on.
* @param Id is the interrupt ID for which to simulate an interrupt.
*
* @return
* - XST_SUCCESS if successful
* - XST_FAILURE if the interrupt could not be
* simulated because the interrupt controller is or
* has previously been in real mode.
*
* @note None.
*
******************************************************************************/
int XIntc_SimulateIntr(XIntc * InstancePtr, u8 Id)
{
u32 Mask;
u32 MasterEnable;
XIntc_Config *CfgPtr;
int Index;
int DeviceId;
/*
* Assert the arguments
*/
Xil_AssertNonvoid(InstancePtr != NULL);
Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
Xil_AssertNonvoid(Id < XPAR_INTC_MAX_NUM_INTR_INPUTS);
/* Get the contents of the master enable register and determine if
* hardware interrupts have already been enabled, if so, this is a write
* once bit such that simulation can't be done at this point because
* the ISR register is no longer writable by software
*/
MasterEnable = XIntc_In32(InstancePtr->BaseAddress + XIN_MER_OFFSET);
if (MasterEnable & XIN_INT_HARDWARE_ENABLE_MASK) {
return XST_FAILURE;
}
if (Id > 31) {
DeviceId = Id/32;
CfgPtr = XIntc_LookupConfig(Id/32);
Mask = XIntc_BitPosMask[Id%32];
XIntc_Out32(CfgPtr->BaseAddress + XIN_ISR_OFFSET, Mask);
/* Generate interrupt for 31 by writing to Interrupt Status
* register of parent controllers. Primary controller ISR
* will be written last in the loop
*/
Mask = XIntc_BitPosMask[31];
for (Index = DeviceId - 1; Index >= 0; Index--)
{
CfgPtr = XIntc_LookupConfig(Index);
XIntc_Out32(CfgPtr->BaseAddress + XIN_ISR_OFFSET,
Mask);
}
}
else {
/*
* The Id is used to create the appropriate mask for the
* desired bit position.
*/
Mask = XIntc_BitPosMask[Id];
/*
* Enable the selected interrupt source by reading the interrupt
* enable register and then modifying only the specified
* interrupt id enable
*/
XIntc_Out32(InstancePtr->BaseAddress + XIN_ISR_OFFSET, Mask);
}
/* indicate the interrupt was successfully simulated */
return XST_SUCCESS;
}
/**
*
* Run a self-test on the driver/device. This is a destructive test.
*
* This involves forcing interrupts into the controller and verifying that they
* are recognized and can be acknowledged. This test will not succeed if the
* interrupt controller has been started in real mode such that interrupts
* cannot be forced.
*
* @param InstancePtr is a pointer to the XIntc instance to be worked on.
*
* @return
* - XST_SUCCESS if self-test is successful.
* - XST_INTC_FAIL_SELFTEST if the Interrupt controller fails the
* self-test. It will fail the self test if the device has
* previously been started in real mode.
*
* @note None.
*
******************************************************************************/
int XIntc_SelfTest(XIntc * InstancePtr)
{
u32 CurrentISR;
u32 Temp;
/*
* Assert the arguments
*/
Xil_AssertNonvoid(InstancePtr != NULL);
Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
/*
* Acknowledge all pending interrupts by reading the interrupt status
* register and writing the value to the acknowledge register
*/
Temp = XIntc_In32(InstancePtr->BaseAddress + XIN_ISR_OFFSET);
XIntc_Out32(InstancePtr->BaseAddress + XIN_IAR_OFFSET, Temp);
/*
* Verify that there are no interrupts by reading the interrupt status
*/
CurrentISR = XIntc_In32(InstancePtr->BaseAddress + XIN_ISR_OFFSET);
/*
* ISR should be zero after all interrupts are acknowledged
*/
if (CurrentISR != 0) {
return XST_INTC_FAIL_SELFTEST;
}
/*
* Set a bit in the ISR which simulates an interrupt
*/
XIntc_Out32(InstancePtr->BaseAddress + XIN_ISR_OFFSET, XIN_TEST_MASK);
/*
* Verify that it was set
*/
CurrentISR = XIntc_In32(InstancePtr->BaseAddress + XIN_ISR_OFFSET);
if (CurrentISR != XIN_TEST_MASK) {
return XST_INTC_FAIL_SELFTEST;
}
/*
* Acknowledge the interrupt
*/
XIntc_Out32(InstancePtr->BaseAddress + XIN_IAR_OFFSET, XIN_TEST_MASK);
/*
* Read back the ISR to verify that the interrupt is gone
*/
CurrentISR = XIntc_In32(InstancePtr->BaseAddress + XIN_ISR_OFFSET);
if (CurrentISR != 0) {
return XST_INTC_FAIL_SELFTEST;
}
return XST_SUCCESS;
}
/**
*
* This function is called by primary interrupt handler for the driver to handle
* all Controllers in Cascade mode.It will resolve which interrupts are active
* and enabled and call the appropriate interrupt handler. It uses the
* AckBeforeService flag in the configuration data to determine when to
* acknowledge the interrupt. Highest priority interrupts are serviced first.
* This function assumes that an interrupt vector table has been previously
* initialized. It does not verify that entries in the table are valid before
* calling an interrupt handler.This function calls itself recursively to handle
* all interrupt controllers.
*
* @param DeviceId is the zero-based device ID defined in xparameters.h
* of the interrupting interrupt controller. It is used as a direct
* index into the configuration data, which contains the vector
* table for the interrupt controller.
*
* @return None.
*
* @note
*
******************************************************************************/
static void XIntc_CascadeHandler(void *DeviceId)
{
u32 IntrStatus;
u32 IntrMask = 1;
int IntrNumber;
u32 Imr;
XIntc_Config *CfgPtr;
static int Id = 0;
/* Get the configuration data using the device ID */
CfgPtr = &XIntc_ConfigTable[(u32)DeviceId];
/* Get the interrupts that are waiting to be serviced */
IntrStatus = XIntc_GetIntrStatus(CfgPtr->BaseAddress);
/* Mask the Fast Interrupts */
if (CfgPtr->FastIntr == TRUE) {
Imr = XIntc_In32(CfgPtr->BaseAddress + XIN_IMR_OFFSET);
IntrStatus &= ~Imr;
}
/* Service each interrupt that is active and enabled by
* checking each bit in the register from LSB to MSB which
* corresponds to an interrupt input signal
*/
for (IntrNumber = 0; IntrNumber < CfgPtr->NumberofIntrs; IntrNumber++) {
if (IntrStatus & 1) {
XIntc_VectorTableEntry *TablePtr;
/* In Cascade mode call this function recursively
* for interrupt id 31 and until interrupts of last
* instance/controller are handled
*/
if ((IntrNumber == 31) &&
(CfgPtr->IntcType != XIN_INTC_LAST) &&
(CfgPtr->IntcType != XIN_INTC_NOCASCADE)) {
XIntc_CascadeHandler((void *)++Id);
Id--;
}
/* If the interrupt has been setup to
* acknowledge it before servicing the
* interrupt, then ack it */
if (CfgPtr->AckBeforeService & IntrMask) {
XIntc_AckIntr(CfgPtr->BaseAddress, IntrMask);
}
/* Handler of 31 interrupt Id has to be called only
* for Last controller in cascade Mode
*/
if (!((IntrNumber == 31) &&
(CfgPtr->IntcType != XIN_INTC_LAST) &&
(CfgPtr->IntcType != XIN_INTC_NOCASCADE))) {
/* The interrupt is active and enabled, call
* the interrupt handler that was setup with
* the specified parameter
*/
TablePtr = &(CfgPtr->HandlerTable[IntrNumber]);
TablePtr->Handler(TablePtr->CallBackRef);
}
/* If the interrupt has been setup to acknowledge it
* after it has been serviced then ack it
*/
if ((CfgPtr->AckBeforeService & IntrMask) == 0) {
XIntc_AckIntr(CfgPtr->BaseAddress, IntrMask);
}
/*
* Read the ISR again to handle architectures with
* posted write bus access issues.
*/
XIntc_GetIntrStatus(CfgPtr->BaseAddress);
/*
* If only the highest priority interrupt is to be
* serviced, exit loop and return after servicing
* the interrupt
*/
if (CfgPtr->Options == XIN_SVC_SGL_ISR_OPTION) {
return;
}
}
/* Move to the next interrupt to check */
IntrMask <<= 1;
IntrStatus >>= 1;
/* If there are no other bits set indicating that all interrupts
* have been serviced, then exit the loop
*/
if (IntrStatus == 0) {
break;
}
}
}
/**
*
* This function is the primary interrupt handler for the driver. It must be
* connected to the interrupt source such that is called when an interrupt of
* the interrupt controller is active. It will resolve which interrupts are
* active and enabled and call the appropriate interrupt handler. It uses
* the AckBeforeService flag in the configuration data to determine when to
* acknowledge the interrupt. Highest priority interrupts are serviced first.
* This function assumes that an interrupt vector table has been previously
* initialized.It does not verify that entries in the table are valid before
* calling an interrupt handler. In Cascade mode this function calls
* XIntc_CascadeHandler to handle interrupts of Master and Slave controllers.
* This functions also handles interrupts nesting by saving and restoring link
* register of Microblaze and Interrupt Level register of interrupt controller
* properly.
* @param DeviceId is the zero-based device ID defined in xparameters.h
* of the interrupting interrupt controller. It is used as a direct
* index into the configuration data, which contains the vector
* table for the interrupt controller. Note that even though the
* argument is a void pointer, the value is not a pointer but the
* actual device ID. The void pointer type is necessary to meet
* the XInterruptHandler typedef for interrupt handlers.
*
* @return None.
*
* @note For nested interrupts, this function saves microblaze r14
* register on entry and restores on exit. This is required since
* compiler does not support nesting. This function enables
* Microblaze interrupts after blocking further interrupts
* from the current interrupt number and interrupts below current
* interrupt proirity by writing to Interrupt Level Register of
* INTC on entry. On exit, it disables microblaze interrupts and
* restores ILR register default value(0xFFFFFFFF)back. It is
* recommended to increase STACK_SIZE in linker script for nested
* interrupts.
*
******************************************************************************/
void XIntc_DeviceInterruptHandler(void *DeviceId)
{
u32 IntrStatus;
u32 IntrMask = 1;
int IntrNumber;
XIntc_Config *CfgPtr;
u32 Imr;
/* Get the configuration data using the device ID */
CfgPtr = &XIntc_ConfigTable[(u32)DeviceId];
#if XPAR_INTC_0_INTC_TYPE != XIN_INTC_NOCASCADE
if (CfgPtr->IntcType != XIN_INTC_NOCASCADE) {
XIntc_CascadeHandler(DeviceId);
}
else
#endif
{ /* This extra brace is required for compilation in Cascade Mode */
#if XPAR_XINTC_HAS_ILR == TRUE
#ifdef __MICROBLAZE__
volatile u32 R14_register;
/* Save r14 register */
R14_register = mfgpr(r14);
#endif
volatile u32 ILR_reg;
/* Save ILR register */
ILR_reg = Xil_In32(CfgPtr->BaseAddress + XIN_ILR_OFFSET);
#endif
/* Get the interrupts that are waiting to be serviced */
IntrStatus = XIntc_GetIntrStatus(CfgPtr->BaseAddress);
/* Mask the Fast Interrupts */
if (CfgPtr->FastIntr == TRUE) {
Imr = XIntc_In32(CfgPtr->BaseAddress + XIN_IMR_OFFSET);
IntrStatus &= ~Imr;
}
/* Service each interrupt that is active and enabled by
* checking each bit in the register from LSB to MSB which
* corresponds to an interrupt input signal
*/
for (IntrNumber = 0; IntrNumber < CfgPtr->NumberofIntrs;
IntrNumber++) {
if (IntrStatus & 1) {
XIntc_VectorTableEntry *TablePtr;
#if XPAR_XINTC_HAS_ILR == TRUE
/* Write to ILR the current interrupt
* number
*/
Xil_Out32(CfgPtr->BaseAddress +
XIN_ILR_OFFSET, IntrNumber);
/* Read back ILR to ensure the value
* has been updated and it is safe to
* enable interrupts
*/
Xil_In32(CfgPtr->BaseAddress +
XIN_ILR_OFFSET);
/* Enable interrupts */
Xil_ExceptionEnable();
#endif
/* If the interrupt has been setup to
* acknowledge it before servicing the
* interrupt, then ack it */
if (CfgPtr->AckBeforeService & IntrMask) {
XIntc_AckIntr(CfgPtr->BaseAddress,
IntrMask);
}
/* The interrupt is active and enabled, call
* the interrupt handler that was setup with
* the specified parameter
*/
TablePtr = &(CfgPtr->HandlerTable[IntrNumber]);
TablePtr->Handler(TablePtr->CallBackRef);
/* If the interrupt has been setup to
* acknowledge it after it has been serviced
* then ack it
*/
if ((CfgPtr->AckBeforeService &
IntrMask) == 0) {
XIntc_AckIntr(CfgPtr->BaseAddress,
IntrMask);
}
#if XPAR_XINTC_HAS_ILR == TRUE
/* Disable interrupts */
Xil_ExceptionDisable();
/* Restore ILR */
Xil_Out32(CfgPtr->BaseAddress + XIN_ILR_OFFSET,
ILR_reg);
#endif
/*
* Read the ISR again to handle architectures
* with posted write bus access issues.
*/
XIntc_GetIntrStatus(CfgPtr->BaseAddress);
/*
* If only the highest priority interrupt is to
* be serviced, exit loop and return after
* servicing
* the interrupt
*/
if (CfgPtr->Options == XIN_SVC_SGL_ISR_OPTION) {
#if XPAR_XINTC_HAS_ILR == TRUE
#ifdef __MICROBLAZE__
/* Restore r14 */
mtgpr(r14, R14_register);
#endif
#endif
return;
}
}
/* Move to the next interrupt to check */
IntrMask <<= 1;
IntrStatus >>= 1;
/* If there are no other bits set indicating that all
* interrupts have been serviced, then exit the loop
*/
if (IntrStatus == 0) {
break;
}
}
#if XPAR_XINTC_HAS_ILR == TRUE
#ifdef __MICROBLAZE__
/* Restore r14 */
mtgpr(r14, R14_register);
#endif
#endif
}
}
XStatus init_axi_fifo(struct xemac_s *xemac)
{
xaxiemacif_s *xaxiemacif = (xaxiemacif_s *)(xemac->state);
#if XPAR_INTC_0_HAS_FAST == 1
xaxiemacif_fast = xaxiemacif;
xemac_fast = xemac;
#endif
#if NO_SYS
struct xtopology_t *xtopologyp = &xtopology[xemac->topology_index];
#endif
#ifdef OS_IS_FREERTOS
struct xtopology_t *xtopologyp = &xtopology[xemac->topology_index];
#endif
/* initialize ll fifo */
XLlFifo_Initialize(&xaxiemacif->axififo,
XAxiEthernet_AxiDevBaseAddress(&xaxiemacif->axi_ethernet));
/* Clear any pending FIFO interrupts */
XLlFifo_IntClear(&xaxiemacif->axififo, XLLF_INT_ALL_MASK);
/* enable fifo interrupts */
XLlFifo_IntEnable(&xaxiemacif->axififo, XLLF_INT_ALL_MASK);
#if XLWIP_CONFIG_INCLUDE_AXIETH_ON_ZYNQ == 1
XScuGic_RegisterHandler(xtopologyp->scugic_baseaddr,
xaxiemacif->axi_ethernet.Config.TemacIntr,
(XInterruptHandler)xaxiemac_error_handler,
&xaxiemacif->axi_ethernet);
XScuGic_RegisterHandler(xtopologyp->scugic_baseaddr,
xaxiemacif->axi_ethernet.Config.AxiFifoIntr,
(XInterruptHandler)xllfifo_intr_handler,
xemac);
XScuGic_SetPriTrigTypeByDistAddr(INTC_DIST_BASE_ADDR,
xaxiemacif->axi_ethernet.Config.TemacIntr,
AXIETH_INTR_PRIORITY_SET_IN_GIC,
TRIG_TYPE_RISING_EDGE_SENSITIVE);
XScuGic_SetPriTrigTypeByDistAddr(INTC_DIST_BASE_ADDR,
xaxiemacif->axi_ethernet.Config.AxiFifoIntr,
AXIFIFO_INTR_PRIORITY_SET_IN_GIC,
TRIG_TYPE_RISING_EDGE_SENSITIVE);
XScuGic_EnableIntr(INTC_DIST_BASE_ADDR,
xaxiemacif->axi_ethernet.Config.TemacIntr);
XScuGic_EnableIntr(INTC_DIST_BASE_ADDR,
xaxiemacif->axi_ethernet.Config.AxiFifoIntr);
#else
#if NO_SYS
#if XPAR_INTC_0_HAS_FAST == 1
/* Register temac interrupt with interrupt controller */
XIntc_RegisterFastHandler(xtopologyp->intc_baseaddr,
xaxiemacif->axi_ethernet.Config.TemacIntr,
(XFastInterruptHandler)xaxiemac_fasterror_handler);
/* connect & enable FIFO interrupt */
XIntc_RegisterFastHandler(xtopologyp->intc_baseaddr,
xaxiemacif->axi_ethernet.Config.AxiFifoIntr,
(XFastInterruptHandler)xllfifo_fastintr_handler);
#else
/* Register temac interrupt with interrupt controller */
XIntc_RegisterHandler(xtopologyp->intc_baseaddr,
xaxiemacif->axi_ethernet.Config.TemacIntr,
(XInterruptHandler)xaxiemac_error_handler,
&xaxiemacif->axi_ethernet);
/* connect & enable FIFO interrupt */
XIntc_RegisterHandler(xtopologyp->intc_baseaddr,
xaxiemacif->axi_ethernet.Config.AxiFifoIntr,
(XInterruptHandler)xllfifo_intr_handler,
xemac);
#endif
/* Enable EMAC interrupts in the interrupt controller */
do {
/* read current interrupt enable mask */
unsigned int cur_mask = XIntc_In32(xtopologyp->intc_baseaddr + XIN_IER_OFFSET);
/* form new mask enabling SDMA & ll_temac interrupts */
cur_mask = cur_mask
| (1 << xaxiemacif->axi_ethernet.Config.AxiFifoIntr)
| (1 << xaxiemacif->axi_ethernet.Config.TemacIntr);
/* set new mask */
XIntc_EnableIntr(xtopologyp->intc_baseaddr, cur_mask);
} while (0);
#else
#ifdef OS_IS_XILKERNEL
/* connect & enable TEMAC interrupts */
register_int_handler(xaxiemacif->axi_ethernet.Config.TemacIntr,
(XInterruptHandler)xaxiemac_error_handler,
&xaxiemacif->axi_ethernet);
enable_interrupt(xaxiemacif->axi_ethernet.Config.TemacIntr);
/* connect & enable FIFO interrupts */
register_int_handler(xaxiemacif->axi_ethernet.Config.AxiFifoIntr,
(XInterruptHandler)xllfifo_intr_handler,
xemac);
enable_interrupt(xaxiemacif->axi_ethernet.Config.AxiFifoIntr);
#else
#if XPAR_INTC_0_HAS_FAST == 1
/* Register temac interrupt with interrupt controller */
XIntc_RegisterFastHandler(xtopologyp->intc_baseaddr,
xaxiemacif->axi_ethernet.Config.TemacIntr,
(XFastInterruptHandler)xaxiemac_fasterror_handler);
/* connect & enable FIFO interrupt */
XIntc_RegisterFastHandler(xtopologyp->intc_baseaddr,
xaxiemacif->axi_ethernet.Config.AxiFifoIntr,
(XFastInterruptHandler)xllfifo_fastintr_handler);
#else
/* Register temac interrupt with interrupt controller */
XIntc_RegisterHandler(xtopologyp->intc_baseaddr,
xaxiemacif->axi_ethernet.Config.TemacIntr,
(XInterruptHandler)xaxiemac_error_handler,
&xaxiemacif->axi_ethernet);
/* connect & enable FIFO interrupt */
XIntc_RegisterHandler(xtopologyp->intc_baseaddr,
xaxiemacif->axi_ethernet.Config.AxiFifoIntr,
(XInterruptHandler)xllfifo_intr_handler,
xemac);
#endif
/* Enable EMAC interrupts in the interrupt controller */
do {
/* read current interrupt enable mask */
unsigned int cur_mask = XIntc_In32(xtopologyp->intc_baseaddr + XIN_IER_OFFSET);
/* form new mask enabling SDMA & ll_temac interrupts */
cur_mask = cur_mask
| (1 << xaxiemacif->axi_ethernet.Config.AxiFifoIntr)
| (1 << xaxiemacif->axi_ethernet.Config.TemacIntr);
/* set new mask */
XIntc_EnableIntr(xtopologyp->intc_baseaddr, cur_mask);
} while (0);
#endif
#endif
#endif
return 0;
}
/**
*
* This function is the primary interrupt handler for the driver. It must be
* connected to the interrupt source such that is called when an interrupt of
* the interrupt controller is active. It will resolve which interrupts are
* active and enabled and call the appropriate interrupt handler. It uses
* the AckBeforeService flag in the configuration data to determine when to
* acknowledge the interrupt. Highest priority interrupts are serviced first.
* The driver can be configured to service only the highest priority interrupt
* or all pending interrupts using the {XIntc_SetOptions()} function or
* the {XIntc_SetIntrSrvOption()} function.
*
* This function assumes that an interrupt vector table has been previously
* initialized. It does not verify that entries in the table are valid before
* calling an interrupt handler.
*
* @param DeviceId is the zero-based device ID defined in xparameters.h
* of the interrupting interrupt controller. It is used as a direct
* index into the configuration data, which contains the vector
* table for the interrupt controller. Note that even though the
* argument is a void pointer, the value is not a pointer but the
* actual device ID. The void pointer type is necessary to meet
* the XInterruptHandler typedef for interrupt handlers.
*
* @return None.
*
* @note
*
* The constant XPAR_INTC_MAX_NUM_INTR_INPUTS must be setup for this to compile.
* Interrupt IDs range from 0 - 31 and correspond to the interrupt input signals
* for the interrupt controller. XPAR_INTC_MAX_NUM_INTR_INPUTS specifies the
* highest numbered interrupt input signal that is used.
*
******************************************************************************/
void XIntc_DeviceInterruptHandler(void *DeviceId)
{
u32 IntrStatus;
u32 IntrMask = 1;
int IntrNumber;
XIntc_Config *CfgPtr;
u32 Imr;
/* Get the configuration data using the device ID */
CfgPtr = &XIntc_ConfigTable[(u32) DeviceId];
/* Get the interrupts that are waiting to be serviced */
IntrStatus = XIntc_GetIntrStatus(CfgPtr->BaseAddress);
/* Mask the Fast Interrupts */
if (CfgPtr->FastIntr == TRUE) {
Imr = XIntc_In32(CfgPtr->BaseAddress + XIN_IMR_OFFSET);
IntrStatus &= ~Imr;
}
/* Service each interrupt that is active and enabled by checking each
* bit in the register from LSB to MSB which corresponds to an interrupt
* intput signal
*/
for (IntrNumber = 0; IntrNumber < XPAR_INTC_MAX_NUM_INTR_INPUTS;
IntrNumber++) {
if (IntrStatus & 1) {
XIntc_VectorTableEntry *TablePtr;
/* If the interrupt has been setup to acknowledge it
* before servicing the interrupt, then ack it
*/
if (CfgPtr->AckBeforeService & IntrMask) {
XIntc_AckIntr(CfgPtr->BaseAddress, IntrMask);
}
/* The interrupt is active and enabled, call the
* interrupt handler that was setup with the specified
* parameter
*/
TablePtr = &(CfgPtr->HandlerTable[IntrNumber]);
TablePtr->Handler(TablePtr->CallBackRef);
/* If the interrupt has been setup to acknowledge it
* after it has been serviced then ack it
*/
if ((CfgPtr->AckBeforeService & IntrMask) == 0) {
XIntc_AckIntr(CfgPtr->BaseAddress, IntrMask);
}
/*
* Read the ISR again to handle architectures with posted write
* bus access issues.
*/
XIntc_GetIntrStatus(CfgPtr->BaseAddress);
/*
* If only the highest priority interrupt is to be
* serviced, exit loop and return after servicing
* the interrupt
*/
if (CfgPtr->Options == XIN_SVC_SGL_ISR_OPTION) {
return;
}
}
/* Move to the next interrupt to check */
IntrMask <<= 1;
IntrStatus >>= 1;
/* If there are no other bits set indicating that all interrupts
* have been serviced, then exit the loop
*/
if (IntrStatus == 0) {
break;
}
}
}
/**
*
* Makes the connection between the Id of the interrupt source and the
* associated handler that is to run when the interrupt is recognized.In Cascade
* mode, connects handler to corresponding Slave controller IVAR register
* depending on the Id and sets all interrupt sources of the Slave controller as
* fast interrupts.
*
* @param InstancePtr is a pointer to the XIntc instance to be worked on.
* @param Id contains the ID of the interrupt source and should be in the
* range of 0 to XPAR_INTC_MAX_NUM_INTR_INPUTS - 1 with 0 being
* the highest priority interrupt.
* @param Handler to the handler for that interrupt.
*
* @return
* - XST_SUCCESS
*
* @note
* Slave controllers in Cascade Mode should have all as Fast
* interrupts or Normal interrupts, mixed interrupts are not
* supported
*
* WARNING: The handler provided as an argument will overwrite any handler
* that was previously connected.
*
****************************************************************************/
int XIntc_ConnectFastHandler(XIntc *InstancePtr, u8 Id,
XFastInterruptHandler Handler)
{
u32 Imr;
u32 CurrentIER;
u32 Mask;
XIntc_Config *CfgPtr;
/*
* Assert the arguments
*/
Xil_AssertNonvoid(InstancePtr != NULL);
Xil_AssertNonvoid(Id < XPAR_INTC_MAX_NUM_INTR_INPUTS);
Xil_AssertNonvoid(Handler != NULL);
Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
Xil_AssertNonvoid(InstancePtr->CfgPtr->FastIntr == TRUE);
if (Id > 31) {
/* Enable user required Id in Slave controller */
CfgPtr = XIntc_LookupConfig(Id/32);
if (CfgPtr->FastIntr != TRUE) {
/*Fast interrupts of slave controller are not enabled*/
return XST_FAILURE;
}
/* Get the Enabled Interrupts */
CurrentIER = XIntc_In32(CfgPtr->BaseAddress + XIN_IER_OFFSET);
/* Convert from integer id to bit mask */
Mask = XIntc_BitPosMask[(Id%32)];
/* Disable the Interrupt if it was enabled before calling
* this function
*/
if (CurrentIER & Mask) {
XIntc_Disable(InstancePtr, Id);
}
XIntc_Out32(CfgPtr->BaseAddress + XIN_IVAR_OFFSET +
((Id%32) * 4), (u32) Handler);
/* Slave controllers in Cascade Mode should have all as Fast
* interrupts or Normal interrupts, mixed interrupts are not
* supported
*/
XIntc_Out32(CfgPtr->BaseAddress + XIN_IMR_OFFSET, 0xFFFFFFFF);
/* Enable the Interrupt if it was enabled before calling this
* function
*/
if (CurrentIER & Mask) {
XIntc_Enable(InstancePtr, Id);
}
}
else {
/* Get the Enabled Interrupts */
CurrentIER = XIntc_In32(InstancePtr->BaseAddress +
XIN_IER_OFFSET);
/* Convert from integer id to bit mask */
Mask = XIntc_BitPosMask[Id];
/* Disable the Interrupt if it was enabled before calling
* this function
*/
if (CurrentIER & Mask) {
XIntc_Disable(InstancePtr, Id);
}
XIntc_Out32(InstancePtr->BaseAddress + XIN_IVAR_OFFSET +
(Id * 4), (u32) Handler);
Imr = XIntc_In32(InstancePtr->BaseAddress + XIN_IMR_OFFSET);
XIntc_Out32(InstancePtr->BaseAddress + XIN_IMR_OFFSET,
Imr | Mask);
/* Enable the Interrupt if it was enabled before
* calling this function
*/
if (CurrentIER & Mask) {
XIntc_Enable(InstancePtr, Id);
}
}
return XST_SUCCESS;
}
/**
*
* Register a fast handler function for a specific interrupt ID. The handler
* function will be called when an interrupt occurs for the given interrupt ID.
* In Cascade mode Interrupt Id is used to set Handler for corresponding Slave
* Controller
*
* @param BaseAddress is the base address of the interrupt controller
* whose vector table will be modified.
* @param InterruptId is the interrupt ID to be associated with the input
* handler.
* @param FastHandler is the function pointer that will be called when
* interrupt occurs
*
* @return None.
*
* @note
*
* Note that this function has no effect if the input base address is invalid.
*
******************************************************************************/
void XIntc_RegisterFastHandler(u32 BaseAddress, u8 Id,
XFastInterruptHandler FastHandler)
{
u32 CurrentIER;
u32 Mask;
u32 Imr;
XIntc_Config *CfgPtr;
if (Id > 31) {
/* Enable user required Id in Slave controller */
CfgPtr = XIntc_LookupConfig(Id/32);
/* Get the Enabled Interrupts */
CurrentIER = XIntc_In32(CfgPtr->BaseAddress + XIN_IER_OFFSET);
/* Convert from integer id to bit mask */
Mask = XIntc_BitPosMask[(Id%32)];
/* Disable the Interrupt if it was enabled before calling
* this function
*/
if (CurrentIER & Mask) {
XIntc_Out32(CfgPtr->BaseAddress + XIN_IER_OFFSET,
(CurrentIER & ~Mask));
}
XIntc_Out32(CfgPtr->BaseAddress + XIN_IVAR_OFFSET +
((Id%32) * 4), (u32) FastHandler);
/* Slave controllers in Cascade Mode should have all as Fast
* interrupts or Normal interrupts, mixed interrupts are not
* supported
*/
XIntc_Out32(CfgPtr->BaseAddress + XIN_IMR_OFFSET, 0xFFFFFFFF);
/* Enable the Interrupt if it was enabled before calling this
* function
*/
if (CurrentIER & Mask) {
XIntc_Out32(CfgPtr->BaseAddress + XIN_IER_OFFSET,
(CurrentIER | Mask));
}
}
else {
CurrentIER = XIntc_In32(BaseAddress + XIN_IER_OFFSET);
/* Convert from integer id to bit mask */
Mask = XIntc_BitPosMask[Id];
if (CurrentIER & Mask) {
/* Disable Interrupt if it was enabled */
CurrentIER = XIntc_In32(BaseAddress + XIN_IER_OFFSET);
XIntc_Out32(BaseAddress + XIN_IER_OFFSET,
(CurrentIER & ~Mask));
}
XIntc_Out32(BaseAddress + XIN_IVAR_OFFSET + (Id * 4),
(u32) FastHandler);
Imr = XIntc_In32(BaseAddress + XIN_IMR_OFFSET);
XIntc_Out32(BaseAddress + XIN_IMR_OFFSET, Imr | Mask);
/* Enable Interrupt if it was enabled before calling
* this function
*/
if (CurrentIER & Mask) {
CurrentIER = XIntc_In32(BaseAddress + XIN_IER_OFFSET);
XIntc_Out32(BaseAddress + XIN_IER_OFFSET,
(CurrentIER | Mask));
}
}
}
/**
*
* Sets the normal interrupt mode for the specified interrupt in the Interrupt
* Mode Register. In Cascade mode disconnects handler from corresponding Slave
* controller IVAR register depending on the Id and sets all interrupt sources
* of the Slave controller as normal interrupts.
*
* @param InstancePtr is a pointer to the XIntc instance to be worked on.
* @param Id contains the ID of the interrupt source and should be in the
* range of 0 to XPAR_INTC_MAX_NUM_INTR_INPUTS - 1 with 0 being the
* highest priority interrupt.
*
* @return None.
*
* @note
* Slave controllers in Cascade Mode should have all as Fast
* interrupts or Normal interrupts, mixed interrupts are not
* supported
*
****************************************************************************/
void XIntc_SetNormalIntrMode(XIntc *InstancePtr, u8 Id)
{
u32 Imr;
u32 CurrentIER;
u32 Mask;
XIntc_Config *CfgPtr;
/*
* Assert the arguments
*/
Xil_AssertVoid(InstancePtr != NULL);
Xil_AssertVoid(Id < XPAR_INTC_MAX_NUM_INTR_INPUTS);
Xil_AssertVoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
Xil_AssertVoid(InstancePtr->CfgPtr->FastIntr == TRUE);
if (Id > 31) {
/* Enable user required Id in Slave controller */
CfgPtr = XIntc_LookupConfig(Id/32);
/* Get the Enabled Interrupts */
CurrentIER = XIntc_In32(CfgPtr->BaseAddress + XIN_IER_OFFSET);
/* Convert from integer id to bit mask */
Mask = XIntc_BitPosMask[(Id%32)];
/* Disable the Interrupt if it was enabled before calling
* this function
*/
if (CurrentIER & Mask) {
XIntc_Disable(InstancePtr, Id);
}
/* Slave controllers in Cascade Mode should have all as Fast
* interrupts or Normal interrupts, mixed interrupts are not
* supported
*/
XIntc_Out32(CfgPtr->BaseAddress + XIN_IMR_OFFSET, 0x0);
if (CfgPtr->IntVectorAddr == 0x0) {
XIntc_Out32(CfgPtr->BaseAddress + XIN_IVAR_OFFSET +
(Id * 4), 0x10);
} else {
XIntc_Out32(CfgPtr->BaseAddress + XIN_IVAR_OFFSET +
(Id * 4), CfgPtr->IntVectorAddr);
}
/* Enable the Interrupt if it was enabled before calling this
* function
*/
if (CurrentIER & Mask) {
XIntc_Enable(InstancePtr, Id);
}
}
else {
/* Get the Enabled Interrupts */
CurrentIER = XIntc_In32(InstancePtr->BaseAddress + XIN_IER_OFFSET);
Mask = XIntc_BitPosMask[Id];/* Convert from integer id to bit mask */
/* Disable the Interrupt if it was enabled before
* calling this function
*/
if (CurrentIER & Mask) {
XIntc_Disable(InstancePtr, Id);
}
/*
* Disable the selected interrupt as Fast Interrupt by reading the
* interrupt mode register and then modifying only the
* specified interrupt id
*/
Imr = XIntc_In32(InstancePtr->BaseAddress + XIN_IMR_OFFSET);
XIntc_Out32(InstancePtr->BaseAddress + XIN_IMR_OFFSET,
Imr & ~Mask);
if (InstancePtr->CfgPtr->IntVectorAddr == 0x0) {
XIntc_Out32(InstancePtr->BaseAddress + XIN_IVAR_OFFSET +
(Id * 4), 0x10);
} else {
XIntc_Out32(InstancePtr->BaseAddress + XIN_IVAR_OFFSET +
(Id * 4), InstancePtr->CfgPtr->IntVectorAddr);
}
/* Enable the Interrupt if it was enabled before
* calling this function
*/
if (CurrentIER & Mask) {
XIntc_Enable(InstancePtr, Id);
}
}
}
XStatus init_axi_fifo(struct xemac_s *xemac)
{
xaxiemacif_s *xaxiemacif = (xaxiemacif_s *)(xemac->state);
#if XPAR_INTC_0_HAS_FAST == 1
xaxiemacif_fast = xaxiemacif;
xemac_fast = xemac;
#endif
#if NO_SYS
struct xtopology_t *xtopologyp = &xtopology[xemac->topology_index];
#endif
/* initialize ll fifo */
XLlFifo_Initialize(&xaxiemacif->axififo,
XAxiEthernet_AxiDevBaseAddress(&xaxiemacif->axi_ethernet));
/* Clear any pending FIFO interrupts */
XLlFifo_IntClear(&xaxiemacif->axififo, XLLF_INT_ALL_MASK);
/* enable fifo interrupts */
XLlFifo_IntEnable(&xaxiemacif->axififo, XLLF_INT_ALL_MASK);
#if NO_SYS
#if XPAR_INTC_0_HAS_FAST == 1
/* Register temac interrupt with interrupt controller */
XIntc_RegisterFastHandler(xtopologyp->intc_baseaddr,
xaxiemacif->axi_ethernet.Config.TemacIntr,
(XFastInterruptHandler)xaxiemac_fasterror_handler);
/* connect & enable FIFO interrupt */
XIntc_RegisterFastHandler(xtopologyp->intc_baseaddr,
xaxiemacif->axi_ethernet.Config.AxiFifoIntr,
(XFastInterruptHandler)xllfifo_fastintr_handler);
#else
/* Register temac interrupt with interrupt controller */
XIntc_RegisterHandler(xtopologyp->intc_baseaddr,
xaxiemacif->axi_ethernet.Config.TemacIntr,
(XInterruptHandler)xaxiemac_error_handler,
&xaxiemacif->axi_ethernet);
/* connect & enable FIFO interrupt */
XIntc_RegisterHandler(xtopologyp->intc_baseaddr,
xaxiemacif->axi_ethernet.Config.AxiFifoIntr,
(XInterruptHandler)xllfifo_intr_handler,
xemac);
#endif
/* Enable EMAC interrupts in the interrupt controller */
do {
/* read current interrupt enable mask */
unsigned int cur_mask = XIntc_In32(xtopologyp->intc_baseaddr + XIN_IER_OFFSET);
/* form new mask enabling SDMA & ll_temac interrupts */
cur_mask = cur_mask
| (1 << xaxiemacif->axi_ethernet.Config.AxiFifoIntr)
| (1 << xaxiemacif->axi_ethernet.Config.TemacIntr);
/* set new mask */
XIntc_EnableIntr(xtopologyp->intc_baseaddr, cur_mask);
} while (0);
#else
/* connect & enable TEMAC interrupts */
register_int_handler(xaxiemacif->axi_ethernet.Config.TemacIntr,
(XInterruptHandler)xaxiemac_error_handler,
&xaxiemacif->axi_ethernet);
enable_interrupt(xaxiemacif->axi_ethernet.Config.TemacIntr);
/* connect & enable FIFO interrupts */
register_int_handler(xaxiemacif->axi_ethernet.Config.AxiFifoIntr,
(XInterruptHandler)xllfifo_intr_handler,
xemac);
enable_interrupt(xaxiemacif->axi_ethernet.Config.AxiFifoIntr);
#endif
return 0;
}