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33 /*****************************************************************************/
36 * @file xcsudma_selftest.c
38 * This file contains a diagnostic self-test function for the CSU_DMA driver.
39 * Refer to the header file xcsudma.h for more detailed information.
42 * MODIFICATION HISTORY:
44 * Ver Who Date Changes
45 * ----- ------ -------- ---------------------------------------------------
46 * 1.0 vnsld 22/10/14 First release
49 ******************************************************************************/
51 /***************************** Include Files *********************************/
55 /************************** Constant Definitions ****************************/
58 /**************************** Type Definitions ******************************/
61 /***************** Macros (Inline Functions) Definitions ********************/
64 /************************** Variable Definitions ****************************/
67 /************************** Function Prototypes *****************************/
70 /************************** Function Definitions *****************************/
73 /*****************************************************************************/
76 * This function runs a self-test on the driver and hardware device. Performs
77 * reset of both source and destination channels and checks if reset is working
80 * @param InstancePtr is a pointer to the XCsuDma instance.
83 * - XST_SUCCESS if the self-test passed.
84 * - XST_FAILURE otherwise.
88 ******************************************************************************/
89 s32 XCsuDma_SelfTest(XCsuDma *InstancePtr)
94 /* Verify arguments. */
95 Xil_AssertNonvoid(InstancePtr != NULL);
97 Data = XCsuDma_ReadReg(InstancePtr->Config.BaseAddress,
98 (u32)(XCSUDMA_CTRL_OFFSET));
100 /* Changing Endianess of Source channel */
102 XCsuDma_WriteReg(InstancePtr->Config.BaseAddress,
103 (u32)(XCSUDMA_CTRL_OFFSET),
104 ((Data) | (u32)(XCSUDMA_CTRL_ENDIAN_MASK)));
106 if ((XCsuDma_ReadReg(InstancePtr->Config.BaseAddress,
107 (u32)(XCSUDMA_CTRL_OFFSET)) &
108 (u32)(XCSUDMA_CTRL_ENDIAN_MASK)) ==
109 (XCSUDMA_CTRL_ENDIAN_MASK)) {
110 Status = (s32)(XST_SUCCESS);
113 Status = (s32)(XST_FAILURE);
116 /* Changes made are being reverted back */
117 XCsuDma_WriteReg(InstancePtr->Config.BaseAddress,
118 (u32)(XCSUDMA_CTRL_OFFSET), Data);