/* $Id: xgpio_selftest.c,v 1.4 2002/09/19 20:35:52 moleres Exp $ *//********************************************************************************       XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS"*       AS A COURTESY TO YOU, SOLELY FOR USE IN DEVELOPING PROGRAMS AND*       SOLUTIONS FOR XILINX DEVICES.  BY PROVIDING THIS DESIGN, CODE,*       OR INFORMATION AS ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE,*       APPLICATION OR STANDARD, XILINX IS MAKING NO REPRESENTATION*       THAT THIS IMPLEMENTATION IS FREE FROM ANY CLAIMS OF INFRINGEMENT,*       AND YOU ARE RESPONSIBLE FOR OBTAINING ANY RIGHTS YOU MAY REQUIRE*       FOR YOUR IMPLEMENTATION.  XILINX EXPRESSLY DISCLAIMS ANY*       WARRANTY WHATSOEVER WITH RESPECT TO THE ADEQUACY OF THE*       IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OR*       REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM CLAIMS OF*       INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS*       FOR A PARTICULAR PURPOSE.**       (c) Copyright 2002 Xilinx Inc.*       All rights reserved.*******************************************************************************//*** @file xgpio_selftest.c** The implementation of the XGpio component's self test function.* See xgpio.h for more information about the component.** @note** None******************************************************************************//***************************** Include Files ********************************/#include "xgpio.h"/************************** Constant Definitions ****************************//**************************** Type Definitions ******************************//***************** Macros (Inline Functions) Definitions ********************//************************** Variable Definitions ****************************//************************** Function Prototypes *****************************//******************************************************************************//*** Run a self-test on the driver/device. This includes the following tests:**   - Register reads.** ARGUMENTS:** @param InstancePtr is a pointer to the XGpio instance to be worked on.*        This parameter must have been previously initialized with*        XGpio_Initialize().** @return** - XST_SUCCESS     If test passed* - XST_FAILURE     If test failed** @note** Assume that the device is in it's reset state which means that the TRI* register is set to all inputs. We cannot twiddle bits in the data register* since this may lead to a real disaster (i.e. whatever is hooked to those* pins gets activated when you'd least expect).*******************************************************************************/XStatus XGpio_SelfTest(XGpio *InstancePtr){    Xuint32 Data;    XASSERT_NONVOID(InstancePtr != XNULL);    XASSERT_NONVOID(InstancePtr->IsReady == XCOMPONENT_IS_READY);    Data = XGpio_mReadReg(InstancePtr->BaseAddress, XGPIO_TRI_OFFSET);    if (Data != 0xFFFFFFFF)    {        return(XST_FAILURE);    }    return(XST_SUCCESS);}