void interrupt_handler_dispatcher(void* ptr) {
// Ask the Interrupt Controller for a status of its interrupts
uint32_t status = XIntc_GetIntrStatus(XPAR_INTC_0_BASEADDR);
// Check what triggered the interrupt
if (status & XPAR_FIT_TIMER_0_INTERRUPT_MASK) {
// Let the timer know it got an interrupt!
if (interrupts_timer_handler) interrupts_timer_handler();
// Then acknowledge it so it can interrupt again
XIntc_AckIntr(XPAR_INTC_0_BASEADDR, XPAR_FIT_TIMER_0_INTERRUPT_MASK);
} else if (status & XPAR_PIT_0_MYINTERRUPT_MASK) {
if (interrupts_timer_handler) interrupts_timer_handler();
// Then acknowledge it so it can interrupt again
XIntc_AckIntr(XPAR_INTC_0_BASEADDR, XPAR_PIT_0_MYINTERRUPT_MASK);
} else if (status & XPAR_AXI_AC97_0_INTERRUPT_MASK) {
// Let the audio controller know we got an interrupt!
if (interrupts_audio_handler) interrupts_audio_handler();
XIntc_AckIntr(XPAR_INTC_0_BASEADDR, XPAR_AXI_AC97_0_INTERRUPT_MASK);
} else if (status & XPAR_DMA_CTRL_0_INTERRUPT_MASK) {
if (interrupts_dma_handler) interrupts_dma_handler();
XIntc_AckIntr(XPAR_INTC_0_BASEADDR, XPAR_DMA_CTRL_0_INTERRUPT_MASK);
}
}
void sound_interrupt_handler(void* ptr)
{
int intc_status = XIntc_GetIntrStatus(XPAR_INTC_0_BASEADDR);
// Check the FIT interrupt first.
if (intc_status & XPAR_AXI_AC97_0_INTERRUPT_MASK)
{
sound_writeToFifo(100);
XIntc_AckIntr(XPAR_INTC_0_BASEADDR, XPAR_AXI_AC97_0_INTERRUPT_MASK);
}
else
xil_printf("Unknown interupt: %x\n\r", intc_status);
}
// Main interrupt handler, queries the interrupt controller to see what peripheral
// fired the interrupt and then dispatches the corresponding interrupt handler.
// This routine acks the interrupt at the controller level but the peripheral
// interrupt must be ack'd by the dispatched interrupt handler.
void interrupt_handler_dispatcher(void* ptr) {
int intc_status = XIntc_GetIntrStatus(XPAR_INTC_0_BASEADDR);
// Check the FIT interrupt first.
if (intc_status & XPAR_FIT_TIMER_0_INTERRUPT_MASK){
XIntc_AckIntr(XPAR_INTC_0_BASEADDR, XPAR_FIT_TIMER_0_INTERRUPT_MASK);
timer_interrupt_handler();
}
// Check the push buttons.
if (intc_status & XPAR_PUSH_BUTTONS_5BITS_IP2INTC_IRPT_MASK){
XIntc_AckIntr(XPAR_INTC_0_BASEADDR, XPAR_PUSH_BUTTONS_5BITS_IP2INTC_IRPT_MASK);
pb_interrupt_handler();
}
}
// Main interrupt handler, queries the interrupt controller to see what peripheral
// fired the interrupt and then dispatches the corresponding interrupt handler.
// This routine acks the interrupt at the controller level but the peripheral
// interrupt must be ack'd by the dispatched interrupt handler.
void interrupt_handler_dispatcher(void* ptr)
{
// /* Reset the timers, and clear interrupts */
// XTmrCtr_mSetControlStatusReg(XPAR_DELAY_BASEADDR, 0, XTC_CSR_INT_OCCURED_MASK |
// XTC_CSR_LOAD_MASK );
//
// /* Enable timer interrupts in the interrupt controller */
// XIntc_mEnableIntr(XPAR_DELAY_BASEADDR, XPAR_DELAY_INTERRUPT_MASK);
//
// /* Start the timers */
// XTmrCtr_mSetControlStatusReg(XPAR_DELAY_BASEADDR, 0, XTC_CSR_ENABLE_TMR_MASK |
// XTC_CSR_ENABLE_INT_MASK | XTC_CSR_AUTO_RELOAD_MASK |
// XTC_CSR_DOWN_COUNT_MASK);
int intc_status = XIntc_GetIntrStatus(XPAR_INTC_0_BASEADDR);
// Check the FIT interrupt first.
if (intc_status & XPAR_FIT_TIMER_0_INTERRUPT_MASK) // add pit timer here
{
//xil_printf("fit timer\r\n");
XIntc_AckIntr(XPAR_INTC_0_BASEADDR, XPAR_FIT_TIMER_0_INTERRUPT_MASK);
timer_interrupt_handler();
}
if (intc_status & XPAR_AXI_AC97_0_INTERRUPT_MASK)
{
// if(XAC97_isInFIFOFull(XPAR_AXI_AC97_0_BASEADDR))
// xil_printf("buffer is full why are you interrupting????\r\n");
XIntc_AckIntr(XPAR_INTC_0_BASEADDR, XPAR_AXI_AC97_0_INTERRUPT_MASK);
audio_interrupt_handler();
}
if(intc_status & XPAR_DMA_0_INTERRUPT_MASK)
{
XIntc_AckIntr(XPAR_INTC_0_BASEADDR, XPAR_DMA_0_INTERRUPT_MASK);
}
}
// Main interrupt handler, queries the interrupt controller to see what peripheral
// fired the interrupt and then dispatches the corresponding interrupt handler.
// This routine acks the interrupt at the controller level but the peripheral
// interrupt must be ack'd by the dispatched interrupt handler.
void interrupt_handler_dispatcher(void* ptr)
{
static int boolPrintedFIT = 0;
int intc_status = XIntc_GetIntrStatus(XPAR_INTC_0_BASEADDR);
//Check the PS2 Interrupt first
if (intc_status & XPAR_FIT_TIMER_0_INTERRUPT_MASK)
{
XIntc_AckIntr(XPAR_INTC_0_BASEADDR, XPAR_FIT_TIMER_0_INTERRUPT_MASK);
if(!boolPrintedFIT)
{
xil_printf("FIT Timer Interrupt\n\r");
boolPrintedFIT = 1;
}
}
if (intc_status & XPAR_DMA_CONTROLLER_0_INTERRUPT_MASK)
{
XIntc_AckIntr(XPAR_INTC_0_BASEADDR, XPAR_DMA_CONTROLLER_0_INTERRUPT_MASK);
printf("DMA Interrupt\n\r");
}
}
// Main interrupt handler, queries the interrupt controller to see what peripheral
// fired the interrupt and then dispatches the corresponding interrupt handler.
// This routine acks the interrupt at the controller level but the peripheral
// interrupt must be ack'd by the dispatched interrupt handler.
void interrupt_handler_dispatcher(void* ptr)
{
int intc_status = XIntc_GetIntrStatus(XPAR_INTC_0_BASEADDR);
//Check the PS2 Interrupt first
if (intc_status & XPAR_PS2CTRL_0_INTERRUPT_MASK)
{
mouse_stateMachine(mouse_ps2ctrlReadValue());
XIntc_AckIntr(XPAR_INTC_0_BASEADDR, XPAR_PS2CTRL_0_INTERRUPT_MASK);
}
if (intc_status & XPAR_PIT_0_INTERRUPT_MASK)
{
low_priority_intc_status = low_priority_intc_status | XPAR_PIT_0_INTERRUPT_MASK;
XIntc_AckIntr(XPAR_INTC_0_BASEADDR, XPAR_PIT_0_INTERRUPT_MASK);
}
if (intc_status & XPAR_AXI_AC97_0_INTERRUPT_MASK)
{
low_priority_intc_status = low_priority_intc_status | XPAR_AXI_AC97_0_INTERRUPT_MASK;
XIntc_AckIntr(XPAR_INTC_0_BASEADDR, XPAR_AXI_AC97_0_INTERRUPT_MASK);
}
}
// Main interrupt handler, queries the interrupt controller to see what peripheral
// fired the interrupt and then dispatches the corresponding interrupt handler.
// This routine acks the interrupt at the controller level but the peripheral
// interrupt must be ack'd by the dispatched interrupt handler.
void interrupt_handler_dispatcher(void* ptr) {
int intc_status = XIntc_GetIntrStatus(XPAR_INTC_0_BASEADDR);
// Check the FIT interrupt first.
if (intc_status & XPAR_FIT_TIMER_0_INTERRUPT_MASK){
XIntc_AckIntr(XPAR_INTC_0_BASEADDR, XPAR_FIT_TIMER_0_INTERRUPT_MASK);
timer_interrupt_handler();
}
//xil_printf("intc_status: %d\n\r", intc_status);
if (intc_status & XPAR_PIT3_0_PIT_INTERRUPT_MASK){
XIntc_AckIntr(XPAR_INTC_0_BASEADDR, XPAR_PIT3_0_PIT_INTERRUPT_MASK);
timer_interrupt_handler();
}
// Check the push buttons.
if (intc_status & XPAR_PUSH_BUTTONS_5BITS_IP2INTC_IRPT_MASK){
XIntc_AckIntr(XPAR_INTC_0_BASEADDR, XPAR_PUSH_BUTTONS_5BITS_IP2INTC_IRPT_MASK);
pb_interrupt_handler();
}
if (intc_status & XPAR_AXI_AC97_0_INTERRUPT_MASK){
XIntc_AckIntr(XPAR_INTC_0_BASEADDR, XPAR_AXI_AC97_0_INTERRUPT_MASK);
sound_interrupt_handler();
}
}
void interrupt_handler_dispatcher(void* ptr) {
// Ask the Interrupt Controller for a status of its interrupts
uint32_t status = XIntc_GetIntrStatus(XPAR_INTC_0_BASEADDR);
// Check what triggered the interrupt
if (status & XPAR_FIT_TIMER_0_INTERRUPT_MASK) {
// Let the timer know it got an interrupt!
// if (interrupts_timer_handler) interrupts_timer_handler();
// Then acknowledge it so it can interrupt again
XIntc_AckIntr(XPAR_INTC_0_BASEADDR, XPAR_FIT_TIMER_0_INTERRUPT_MASK);
} else if (status & XPAR_PUSH_BUTTONS_5BITS_IP2INTC_IRPT_MASK) {
// ----------
// Turn off all PB interrupts for now.
XGpio_InterruptGlobalDisable(&gpPB);
u32 currentButtonState = XGpio_DiscreteRead(&gpPB, 1);
pb_interrupt_handler(currentButtonState);
// XAC97_PlayAudio(XPAR_AXI_AC97_0_BASEADDR, sound_alienMove2.data, &sound_alienMove2.data[sound_alienMove2.numSamples]);
// Ack the PB interrupt.
XGpio_InterruptClear(&gpPB, 0xFFFFFFFF);
// Re-enable PB interrupts.
XGpio_InterruptGlobalEnable(&gpPB);
// ------
XIntc_AckIntr(XPAR_INTC_0_BASEADDR, XPAR_PUSH_BUTTONS_5BITS_IP2INTC_IRPT_MASK);
} else if (status & XPAR_AXI_AC97_0_INTERRUPT_MASK) {
fifo_interrupt_handler();
XIntc_AckIntr(XPAR_INTC_0_BASEADDR, XPAR_AXI_AC97_0_INTERRUPT_MASK);
}
}
/**
*
* 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
}
}
/**
*
* 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;
}
}
}
void rt_hw_trap_irq(void )
{
u32 intr_status;
u32 intr_mask = 1;
int intr_number;
volatile u32 reg; /* used as bit bucket */
XIntc_Config *cfg_ptr;
/* Get the configuration data using the device ID */
cfg_ptr = &XIntc_ConfigTable[0];
/* Get the interrupts that are waiting to be serviced */
intr_status = XIntc_GetIntrStatus(XPAR_INTC_0_BASEADDR);
/* 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 (intr_number = 0; intr_number < XPAR_INTC_MAX_NUM_INTR_INPUTS; intr_number++)
{
if (intr_status & 1)
{
XIntc_VectorTableEntry *table_ptr;
/* If the interrupt has been setup to acknowledge it
* before servicing the interrupt, then ack it
*/
if (cfg_ptr->AckBeforeService & intr_mask)
{
XIntc_AckIntr(cfg_ptr->BaseAddress, intr_mask);
}
/* The interrupt is active and enabled, call the
* interrupt handler that was setup with the specified
* parameter
*/
table_ptr = &(cfg_ptr->HandlerTable[intr_number]);
table_ptr->Handler(table_ptr->CallBackRef);
/* If the interrupt has been setup to acknowledge it
* after it has been serviced then ack it
*/
if ((cfg_ptr->AckBeforeService & intr_mask) == 0)
{
XIntc_AckIntr(cfg_ptr->BaseAddress, intr_mask);
}
/*
* Read the ISR again to handle architectures with posted write
* bus access issues.
*/
reg = XIntc_GetIntrStatus(cfg_ptr->BaseAddress);
/*
* If only the highest priority interrupt is to be
* serviced, exit loop and return after servicing
* the interrupt
*/
if (cfg_ptr->Options == XIN_SVC_SGL_ISR_OPTION)
{
return;
}
}
/* Move to the next interrupt to check */
intr_mask <<= 1;
intr_status >>= 1;
/* If there are no other bits set indicating that all interrupts
* have been serviced, then exit the loop
*/
if (intr_status == 0)
{
break;
}
}
}