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/*****************************************************************************/
/**
*
* @file intg_partialpage_rw.c
*
* This file contains the design example for using NAND driver (XNandPsu).
* This example tests the erase, read and write feature of the controller
* to the page.The flash is erased and written. The data is
* read back and compared with the data written for correctness.

*
* @note None.
*
*
* <pre>
*
* MODIFICATION HISTORY:
*
* Ver   Who    Date	 Changes
* ----- -----  -------- -----------------------------------------------
* 1.0   sb    11/28/2014 First release
*
*
* </pre>
*
******************************************************************************/

/***************************** Include Files ********************************/

#include "intg.h"

/************************** Constant Definitions ****************************/

/**************************** Type Definitions ******************************/

/***************** Macros (Inline Functions) Definitions ********************/

/************************** Variable Definitions ****************************/

/************************** Function Prototypes *****************************/
s32 PartialPage_RW_Test(XNandPsu * NandInstPtr);
/************************** Function Definitions ****************************/

/****************************************************************************/
/**
*
* Entry point to call the Partial Page R/W test.
*
* @param	NandInstPtr - Instance to the nand driver.
* @param	TestLoops - Number of tests to execute.
*
* @return   Number of test failures.
*
* @note	 None.
*
*****************************************************************************/
int Intg_PartialRWTest(XNandPsu * NandInstPtr, int TestLoops)
{

	s32 Status = XST_FAILURE;
	CT_TestReset("Module Partial Page Read Write test");

	while(TestLoops--) {
		Status = PartialPage_RW_Test(NandInstPtr);
		if (Status != XST_SUCCESS) {
			CT_LOG_FAILURE("Nand Partial Page Read Write Failed"
					" with %d mismatches\r\n", MismatchCounter);
			break;
		}
		CT_NotifyNextPass();
	}

	return(CT_GetTestFailures());
}

/****************************************************************************/
/**
*
* This function runs a test on the NAND flash device using the basic driver
* functions in polled mode.
* The function does the following tasks:
*   - Choose random page size for read write Operations.
*	- Erase the flash.
*	- Write data to the flash.
*	- Read back the data from the flash.
*	- Compare the data read against the data Written.
*
* @param	NandInstPtr - Instance to the nand driver.
*
* @return
*		- XST_SUCCESS if successful.
*		- XST_FAILURE if failed.
*
* @note
*		None
*
****************************************************************************/
s32 PartialPage_RW_Test(XNandPsu * NandInstPtr)
{
	s32 Status = (s32)XST_FAILURE;
	u32 Index;
	u64 Offset;
	u32 Length;
	s32 i;
	MismatchCounter = 0;
	Offset = (u64)(TEST_PAGE_START * (u64)NandInstPtr->Geometry.BytesPerPage);
	Length = NandInstPtr->Geometry.BytesPerPage;

	/*
	 * Repeat the test for 5 iterations
	 */
	for(i = 0; i< 5; i++){

		Length = rand()%NandInstPtr->Geometry.BytesPerPage;
		if(Length == 0U){
			Length = NandInstPtr->Geometry.BytesPerPage;
		}

		/*
		 * Erase the Block
		 */
		Status = XNandPsu_Erase(NandInstPtr, (u64)Offset, (u64)Length);
		if (Status != (s32)XST_SUCCESS) {
			goto Out;
		}

		/*
		 * Initialize the write buffer
		 */
		for (Index = 0U; Index < Length;Index++) {
			WriteBuffer[Index] = ((u8)rand() % (u8)256);
		}

		/*
		 * Write to flash
		 */
		Status = XNandPsu_Write(NandInstPtr, (u64)Offset, (u64)Length,
						&WriteBuffer[0]);
		if (Status != (s32)XST_SUCCESS) {
			goto Out;
		}

		/*
		 * Read the flash after writing
		 */
		Status = XNandPsu_Read(NandInstPtr, (u64)Offset, (u64)Length,
						&ReadBuffer[0]);
		if (Status != (s32)XST_SUCCESS) {
			goto Out;
		}

		/*
		 * Compare the results
		 */
		for (Index = 0U; Index < Length;Index++) {
			if (ReadBuffer[Index] != WriteBuffer[Index]) {
				MismatchCounter++;
				Status = (s32)XST_FAILURE;
			}
		}
	}

Out:
	return Status;
}