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32 /*****************************************************************************/
35 * @file xgpiops_selftest.c
37 * This file contains a diagnostic self-test function for the XGpioPs driver.
39 * Read xgpiops.h file for more information.
42 * MODIFICATION HISTORY:
44 * Ver Who Date Changes
45 * ----- ---- -------- -----------------------------------------------
46 * 1.00a sv 01/18/10 First Release
49 *****************************************************************************/
51 /***************************** Include Files ********************************/
56 /************************** Constant Definitions ****************************/
59 /**************************** Type Definitions ******************************/
61 /***************** Macros (Inline Functions) Definitions ********************/
63 /************************** Variable Definitions ****************************/
65 /************************** Function Prototypes *****************************/
67 /*****************************************************************************/
70 * This function runs a self-test on the GPIO driver/device. This function
71 * does a register read/write test on some of the Interrupt Registers.
73 * @param InstancePtr is a pointer to the XGpioPs instance.
76 * - XST_SUCCESS if the self-test passed.
77 * - XST_FAILURE otherwise.
80 ******************************************************************************/
81 int XGpioPs_SelfTest(XGpioPs *InstancePtr)
83 int Status = XST_SUCCESS;
86 u32 CurrentIntrPolarity;
91 u32 IntrTestValue = 0x22;
93 Xil_AssertNonvoid(InstancePtr != NULL);
94 Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
97 * Disable the Interrupts for Bank 0 .
99 IntrEnabled = XGpioPs_IntrGetEnabled(InstancePtr, XGPIOPS_BANK0);
100 XGpioPs_IntrDisable(InstancePtr, XGPIOPS_BANK0, IntrEnabled);
103 * Get the Current Interrupt properties for Bank 0.
104 * Set them to a known value, read it back and compare.
106 XGpioPs_GetIntrType(InstancePtr, XGPIOPS_BANK0, &CurrentIntrType,
107 &CurrentIntrPolarity, &CurrentIntrOnAny);
109 XGpioPs_SetIntrType(InstancePtr, XGPIOPS_BANK0, IntrTestValue,
110 IntrTestValue, IntrTestValue);
112 XGpioPs_GetIntrType(InstancePtr, XGPIOPS_BANK0, &IntrType,
113 &IntrPolarity, &IntrOnAny);
115 if ((IntrType != IntrTestValue) && (IntrPolarity != IntrTestValue) &&
116 (IntrOnAny != IntrTestValue)) {
118 Status = XST_FAILURE;
122 * Restore the contents of all the interrupt registers modified in this
125 XGpioPs_SetIntrType(InstancePtr, XGPIOPS_BANK0, CurrentIntrType,
126 CurrentIntrPolarity, CurrentIntrOnAny);
128 XGpioPs_IntrEnable(InstancePtr, XGPIOPS_BANK0, IntrEnabled);