xscugic_selftest.c

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/* $Id: xscugic_selftest.c,v 1.1.2.1 2011/01/20 03:57:07 sadanan Exp $ */
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/**
*
* @file xscugic_selftest.c
*
* Contains diagnostic self-test functions for the XScuGic driver.
* <pre>
* MODIFICATION HISTORY:
*
* Ver   Who  Date     Changes
* ----- ---- -------- -----------------------------------------------
* 1.00a drg  01/19/10 First release
*
* </pre>
*
******************************************************************************/

/***************************** Include Files *********************************/

#include "xil_types.h"
#include "xil_assert.h"
#include "xscugic.h"

/************************** Constant Definitions *****************************/

#define	XSCUGIC_PCELL_ID	0xB105F00D

/**************************** Type Definitions *******************************/


/***************** Macros (Inline Functions) Definitions *********************/


/************************** Function Prototypes ******************************/

/************************** Variable Definitions *****************************/

/*****************************************************************************/
/**
*
* Run a self-test on the driver/device. This test reads the ID registers and
* compares them.
*
* @param	InstancePtr is a pointer to the XScuGic instance.
*
* @return
*
* 		- XST_SUCCESS if self-test is successful.
* 		- XST_FAILURE if the self-test is not successful.
*
* @note		None.
*
******************************************************************************/
int  XScuGic_SelfTest(XScuGic *InstancePtr)
{
	u32 RegValue1 =0;
	int Index;

	/*
	 * Assert the arguments
	 */
	Xil_AssertNonvoid(InstancePtr != NULL);
	Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);

	/*
	 * Read the ID registers.
	 */
	for(Index=0; Index<=3; Index++) {
		RegValue1 |= XScuGic_DistReadReg(InstancePtr,
			(XSCUGIC_PCELLID_OFFSET + (Index * 4))) << (Index * 8);
	}

	if(XSCUGIC_PCELL_ID != RegValue1){
		return XST_FAILURE;
	}

	return XST_SUCCESS;
}