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/**
*
* @file xiomodule_selftest.c
*
* Contains diagnostic self-test functions for the XIOModule component. This
* file requires other files of the component to be linked in also.
*
*
* MODIFICATION HISTORY:
*
* Ver Who Date Changes
* ----- ---- -------- -----------------------------------------------
* 1.00a sa 07/15/11 First release
*
*
******************************************************************************/
/***************************** Include Files *********************************/
#include "xiomodule.h"
#include "xiomodule_i.h"
#include "xil_assert.h"
#include "xiomodule_io.h"
#include
/************************** Constant Definitions *****************************/
/**************************** Type Definitions *******************************/
/***************** Macros (Inline Functions) Definitions *********************/
/************************** Function Prototypes ******************************/
/************************** Variable Definitions *****************************/
/*****************************************************************************/
/**
*
* Run a self-test on the interrupt controller driver/device. This is a
* destructive test.
*
* This involves forcing interrupts into the controller (if possible, given
* the IO Module configuration) and verifying that they are recognized and can
* be acknowledged.
*
* @param InstancePtr is a pointer to the XIOModule 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 XIOModule_Intc_SelfTest(XIOModule * 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 = XIomodule_In32(InstancePtr->BaseAddress + XIN_ISR_OFFSET);
XIomodule_Out32(InstancePtr->BaseAddress + XIN_IAR_OFFSET, Temp);
/*
* Verify that there are no interrupts by reading the interrupt status
*/
CurrentISR = XIomodule_In32(InstancePtr->BaseAddress + XIN_ISR_OFFSET);
/*
* ISR for internal interrupts should be zero after all interrupts
* are acknowledged. Skip checking external interrupts, since they may
* occur at any time.
*/
if ((CurrentISR & 0xffff) != 0) {
return XST_INTC_FAIL_SELFTEST;
}
return XST_SUCCESS;
}
/*****************************************************************************/
/**
*
* Runs a self-test on the timer driver/device. This test verifies that the
* specified programmable interval timer of the device can be enabled and
* increments.
*
* @param InstancePtr is a pointer to the XIOMOdule instance.
* @param TimerNumber is the timer of the device to operate on.
* Each device may contain multiple timers. The timer
* number is a zero based number with a range of
* 0 to (XTC_DEVICE_TIMER_COUNT - 1).
*
* @return
* - XST_SUCCESS if self-test was successful
* - XST_FAILURE if the timer is not incrementing.
*
* @note
*
* This is a destructive test using the provided timer. The current settings
* of the timer are returned to the initialized values and all settings at the
* time this function is called are overwritten.
*
******************************************************************************/
int XIOModule_Timer_SelfTest(XIOModule * InstancePtr, u8 TimerNumber)
{
u32 TimerCount1 = 0;
u32 TimerCount2 = 0;
u16 Count = 0;
/*
* Assert the arguments
*/
Xil_AssertNonvoid(InstancePtr != NULL);
Xil_AssertNonvoid(TimerNumber < XTC_DEVICE_TIMER_COUNT);
Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
/*
* Set the Load register most significant bit to 1.
*/
XIOModule_SetResetValue(InstancePtr, TimerNumber,
1 << (InstancePtr->CfgPtr->PitSize[TimerNumber] - 1));
/*
* Reset the timer and the interrupt
*/
XIOModule_Timer_SetOptions(InstancePtr, TimerNumber, 0);
/*
* Set the control/status register to enable timer
*/
XIOModule_Timer_Start(InstancePtr, TimerNumber);
/*
* Read the timer
*/
TimerCount1 = XIOModule_GetValue(InstancePtr, TimerNumber);
/*
* Make sure timer is decrementing if the Count rolls under zero
* and the timer still has not decremented an error is returned
*/
do {
TimerCount2 = XIOModule_GetValue(InstancePtr, TimerNumber);
Count++;
}
while ((TimerCount1 == TimerCount2) && (Count != 0));
/*
* Set the control/status register to 0 to complete initialization
* this disables the timer completely and allows it to be used again
*/
XIOModule_Timer_Stop(InstancePtr, TimerNumber);
if (TimerCount1 == TimerCount2) {
return XST_FAILURE;
}
else {
return XST_SUCCESS;
}
}
int XIOModule_SelfTest(XIOModule * InstancePtr)
{
XStatus Status;
u8 Timer;
XIOModule_Config *CfgPtr;
/*
* Assert the arguments
*/
Xil_AssertNonvoid(InstancePtr != NULL);
Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
/*
* Perform the interrupt controller self test.
*/
Status = XIOModule_Intc_SelfTest(InstancePtr);
if (Status != XST_SUCCESS)
{
return XST_FAILURE;
}
/*
* Perform the Programmable Interval Timer (PIT) self test.
*
* Skip unused timers,timers with prescaler (since they may
* have very long expiration times), timers without readable
* counters, and timers with small size (since the counter
* may not change when sampled).
*/
CfgPtr = InstancePtr->CfgPtr;
for (Timer = 0; Timer < XTC_DEVICE_TIMER_COUNT; Timer++) {
if (CfgPtr->PitUsed[Timer] &&
CfgPtr->PitPrescaler[Timer] == XTC_PRESCALER_NONE &&
CfgPtr->PitReadable[Timer] &&
CfgPtr->PitSize[Timer] > 8) {
Status = XIOModule_Timer_SelfTest(InstancePtr, Timer);
if (Status != XST_SUCCESS)
{
return XST_FAILURE;
}
}
}
return XST_SUCCESS;
}