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44 * @file xgpiops_selftest.c
46 * This file contains a diagnostic self-test function for the XGpioPs driver.
48 * Read xgpiops.h file for more information.
51 * MODIFICATION HISTORY:
53 * Ver Who Date Changes
54 * ----- ---- -------- -----------------------------------------------
55 * 1.00a sv 01/18/10 First Release
58 *****************************************************************************/
60 /***************************** Include Files ********************************/
65 /************************** Constant Definitions ****************************/
68 /**************************** Type Definitions ******************************/
70 /***************** Macros (Inline Functions) Definitions ********************/
72 /************************** Variable Definitions ****************************/
74 /************************** Function Prototypes *****************************/
76 /*****************************************************************************/
79 * This function runs a self-test on the GPIO driver/device. This function
80 * does a register read/write test on some of the Interrupt Registers.
82 * @param InstancePtr is a pointer to the XGpioPs instance.
85 * - XST_SUCCESS if the self-test passed.
86 * - XST_FAILURE otherwise.
89 ******************************************************************************/
90 int XGpioPs_SelfTest(XGpioPs *InstancePtr)
92 int Status = XST_SUCCESS;
95 u32 CurrentIntrPolarity;
100 u32 IntrTestValue = 0x22;
102 Xil_AssertNonvoid(InstancePtr != NULL);
103 Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
106 * Disable the Interrupts for Bank 0 .
108 IntrEnabled = XGpioPs_IntrGetEnabled(InstancePtr, XGPIOPS_BANK0);
109 XGpioPs_IntrDisable(InstancePtr, XGPIOPS_BANK0, IntrEnabled);
112 * Get the Current Interrupt properties for Bank 0.
113 * Set them to a known value, read it back and compare.
115 XGpioPs_GetIntrType(InstancePtr, XGPIOPS_BANK0, &CurrentIntrType,
116 &CurrentIntrPolarity, &CurrentIntrOnAny);
118 XGpioPs_SetIntrType(InstancePtr, XGPIOPS_BANK0, IntrTestValue,
119 IntrTestValue, IntrTestValue);
121 XGpioPs_GetIntrType(InstancePtr, XGPIOPS_BANK0, &IntrType,
122 &IntrPolarity, &IntrOnAny);
124 if ((IntrType != IntrTestValue) && (IntrPolarity != IntrTestValue) &&
125 (IntrOnAny != IntrTestValue)) {
127 Status = XST_FAILURE;
131 * Restore the contents of all the interrupt registers modified in this
134 XGpioPs_SetIntrType(InstancePtr, XGPIOPS_BANK0, CurrentIntrType,
135 CurrentIntrPolarity, CurrentIntrOnAny);
137 XGpioPs_IntrEnable(InstancePtr, XGPIOPS_BANK0, IntrEnabled);