1 /******************************************************************************
3 * Copyright (C) 2010 - 2015 Xilinx, Inc. All rights reserved.
5 * Permission is hereby granted, free of charge, to any person obtaining a copy
6 * of this software and associated documentation files (the "Software"), to deal
7 * in the Software without restriction, including without limitation the rights
8 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9 * copies of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
15 * Use of the Software is limited solely to applications:
16 * (a) running on a Xilinx device, or
17 * (b) that interact with a Xilinx device through a bus or interconnect.
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
22 * XILINX BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
23 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
24 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
27 * Except as contained in this notice, the name of the Xilinx shall not be used
28 * in advertising or otherwise to promote the sale, use or other dealings in
29 * this Software without prior written authorization from Xilinx.
31 ******************************************************************************/
32 /*****************************************************************************/
35 * @file xgpiops_selftest.c
36 * @addtogroup gpiops_v3_1
39 * This file contains a diagnostic self-test function for the XGpioPs driver.
41 * Read xgpiops.h file for more information.
44 * MODIFICATION HISTORY:
46 * Ver Who Date Changes
47 * ----- ---- -------- -----------------------------------------------
48 * 1.00a sv 01/18/10 First Release
49 * 3.00 kvn 02/13/15 Modified code for MISRA-C:2012 compliance.
52 *****************************************************************************/
54 /***************************** Include Files ********************************/
59 /************************** Constant Definitions ****************************/
62 /**************************** Type Definitions ******************************/
64 /***************** Macros (Inline Functions) Definitions ********************/
66 /************************** Variable Definitions ****************************/
68 /************************** Function Prototypes *****************************/
70 /*****************************************************************************/
73 * This function runs a self-test on the GPIO driver/device. This function
74 * does a register read/write test on some of the Interrupt Registers.
76 * @param InstancePtr is a pointer to the XGpioPs instance.
79 * - XST_SUCCESS if the self-test passed.
80 * - XST_FAILURE otherwise.
83 ******************************************************************************/
84 s32 XGpioPs_SelfTest(XGpioPs *InstancePtr)
86 s32 Status = XST_SUCCESS;
88 u32 CurrentIntrType = 0U;
89 u32 CurrentIntrPolarity = 0U;
90 u32 CurrentIntrOnAny = 0U;
92 u32 IntrPolarity = 0U;
94 u32 IntrTestValue = 0x22U;
96 Xil_AssertNonvoid(InstancePtr != NULL);
97 Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
99 /* Disable the Interrupts for Bank 0 . */
100 IntrEnabled = XGpioPs_IntrGetEnabled(InstancePtr, XGPIOPS_BANK0);
101 XGpioPs_IntrDisable(InstancePtr, XGPIOPS_BANK0, IntrEnabled);
104 * Get the Current Interrupt properties for Bank 0.
105 * Set them to a known value, read it back and compare.
107 XGpioPs_GetIntrType(InstancePtr, XGPIOPS_BANK0, &CurrentIntrType,
108 &CurrentIntrPolarity, &CurrentIntrOnAny);
110 XGpioPs_SetIntrType(InstancePtr, XGPIOPS_BANK0, IntrTestValue,
111 IntrTestValue, IntrTestValue);
113 XGpioPs_GetIntrType(InstancePtr, XGPIOPS_BANK0, &IntrType,
114 &IntrPolarity, &IntrOnAny);
116 if ((IntrType != IntrTestValue) && (IntrPolarity != IntrTestValue) &&
117 (IntrOnAny != IntrTestValue)) {
119 Status = XST_FAILURE;
123 * Restore the contents of all the interrupt registers modified in this
126 XGpioPs_SetIntrType(InstancePtr, XGPIOPS_BANK0, CurrentIntrType,
127 CurrentIntrPolarity, CurrentIntrOnAny);
129 XGpioPs_IntrEnable(InstancePtr, XGPIOPS_BANK0, IntrEnabled);