/****************************************************************************
*                                                                           *
* Copyright 2004-2011 LSI Corporation. All rights reserved. This file is    *
* confidential and a trade secret of LSI Corporation. The receipt or        *
* possession of this file does not convey any rights to reproduce or        *
* disclose its contents or to manufacture, use, or sell anything it may     *
* describe, in whole, or in part, without the specific written consent of   *
* LSI Corporation.                                                          *
*                                                                           *
****************************************************************************/
/****************************************************************************
*                                                                           *
* NAME            Makefile                                                  *
* SUMMARY                                                                   *
* VERSION         %version: %                                               *
* UPDATE DATE     %date_modified: %                                         *
* PROGRAMMER      %created_by:    Shawn Wang %                              *
*                                                                           *
*        Copyright 2002-2011 LSI Corporation. All Rights Reserved.          *
*                                                                           *
* DESCRIPTION:                                                              *
*                                                                           *
****************************************************************************/

#include <linux/proc_fs.h>
#include <asm/uaccess.h>
#include <linux/kallsyms.h>

#include <commTypes.h>
#include <commRpt.h>
#include <commSysInfo.h>
#include <fpgaRegLib.h>

extern VOID    fpgaNvsramUnlockAll(VOID);
#include "entry.h"

/**************************/
/* /proc/usrconf function */
/**************************/
int userConfEntryRead
( 
 char 	*buf, 
 char	**start, 
 off_t 	offset,
 int 	length,
 int 	*eof, 
 void 	*data
)
{
	int  	table_len, nbytes=0;
	void*	nvsram_virtual_base;
	int	i;
	
	//get virtual address
	nvsram_virtual_base = gFpgaBar2VirtualP;
	if (nvsram_virtual_base == NULL){
		printk("[PROC_USER_CONF] Cannot get virtual space for NVSRAM!! \n");
		return -EFAULT;
	}
	
	//get file size
	table_len = *(volatile unsigned int*)(nvsram_virtual_base + DIAG_USER_CONF_SIZE_LOCATION);
	
	//move content from table_buf to NVSRAM
        for(i=0; i < table_len; i++){
	    	nbytes += sprintf(buf+nbytes, "%c", *(volatile unsigned char*)(nvsram_virtual_base + DIAG_USER_CONF_OFFSET + i));
        }
	
	return table_len;
}

int userConfEntryWrite
(
 struct file 	*file, 
 const char 	*buf, 
 unsigned long 	length, 
 void 			*data	
)
{
	char 	table_buf[DIAG_USER_CONF_SIZE];
	void*	nvsram_virtual_base;
	int	i;
	
	printk("[PROC_USER_CONF] Write User Config to NVSRAM!! \n");
	printk("[PROC_USER_CONF] File length: 0x%08X \n", (unsigned int)length);
	
	if(length >= DIAG_USER_CONF_SIZE){
		printk("[PROC_USER_CONF] File is bigger than 4KBytes!! Abort writing progress.\n");
		return length;
	}
	
	nvsram_virtual_base = gFpgaBar2VirtualP;
	if (nvsram_virtual_base == NULL){
		printk("[PROC_USER_CONF] Cannot get virtual space for NVSRAM!! \n");
		return -EFAULT;
	}
	
	//unlock entire NVSRAM
	fpgaNvsramUnlockAll();
	
	//copy data from user
	if (copy_from_user(table_buf, buf, length) ) {
		return -EFAULT;
	}
	
	//move content from table_buf to NVSRAM
        for(i=0; i < length; i++){
    	    *(volatile unsigned char*)(nvsram_virtual_base + DIAG_USER_CONF_OFFSET + i) = table_buf[i];
        }
	
	*(volatile unsigned int*)(nvsram_virtual_base + DIAG_USER_CONF_SIZE_LOCATION) = (unsigned int)length;
	
	return length;
}