nand_dev.c

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/********************** BEGIN LICENSE BLOCK ************************************
 *
 * JZ4740  mobile_tv  Project  V1.0.0
 * INGENIC CONFIDENTIAL--NOT FOR DISTRIBUTION IN SOURCE CODE FORM
 * Copyright (c) Ingenic Semiconductor Co. Ltd 2005. All rights reserved.
 * 
 * This file, and the files included with this file, is distributed and made 
 * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 
 * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES, 
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS 
 * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 
 * 
 * http://www.ingenic.cn 
 *
 ********************** END LICENSE BLOCK **************************************
 *
 *  Author:  <[e-mail]>  <[e-mail]> 
 *
 *  Create:   2008-06-26, by dsqiu
 *            
 *  Maintain: 2008-06-26, by jgao
 *            
 *
 *******************************************************************************
 */

#if NAND_UDC_DISK
#if (NAND==0)
    #error "makefile no add nand flag!"
#endif
#include "header.h"
#include <mass_storage.h>
#include <fs_api.h>
#include "function.h"

static UDC_LUN udcLun;
extern int NAND_LB_Read(unsigned int Sector, void *pBuffer);
extern int NAND_LB_Write(unsigned int Sector, void *pBuffer);

static int InitStall = 0;
static int FlushDataState = 0;
static unsigned int init_dev(unsigned int handle)
{
	if(InitStall == 0)
	{
		
		printf("nand Disk unMount\r\n");
		FS_IoCtl("nfl:",FS_CMD_UNMOUNT,0,0);
		NAND_LB_Init();
		InitStall = 1;
		FlushDataState = 0;
	}
	
	
}
static unsigned int read_dev_sector(unsigned int handle,unsigned char *buf,unsigned int startsect,unsigned int sectcount)
{
	if(sectcount <= 8)
	{
		
	unsigned int i;
	
	for(i = 0;i < sectcount; i++)
	{
		NAND_LB_Read(startsect + i,(void *)(buf));
		buf += 512;
		//printf("read dev = ia:%x, s:%d c:%d\r\n",buf,startsect + i,sectcount);
		
	}
	//	NAND_LB_Read(startsect,(void *)((unsigned int)buf));
	}else
	{
		NAND_LB_MultiRead(startsect,(void *)((unsigned int)buf),sectcount);
	}
	
	
	return 1;
	
}
static unsigned int write_dev_sector(unsigned int handle,unsigned char *buf,unsigned int startsect,unsigned int sectcount)
{
	if(sectcount <= 8)
	{
		
    unsigned int i;
	//printf("write dev = ia:%x, s:%d c:%d\r\n",buf,startsect,sectcount);
	for(i = 0;i<sectcount;i++)		
	{
		NAND_LB_Write(startsect + i,(void *)(buf));
		buf += 512;
		FlushDataState = 1;
		
	}
	}else
	{
		NAND_LB_MultiWrite(startsect,(void *)((unsigned int)buf),sectcount);
	}
		
	
	
}
static unsigned int check_dev_state(unsigned int handle)
{
	return 1;
}

static unsigned int flush_dev(unsigned int handle)
{
	if( FlushDataState >= 1)
		FlushDataState++;
	if(FlushDataState > 10)
	{	
		NAND_LB_FLASHCACHE();
		//printf("flush data!\n");
		FlushDataState = 0;
	}
		
}
static unsigned int get_dev_info(unsigned int handle,PDEVINFO pinfo)
{

	//printf("pagesize = %d\n pinfo->partsize = %d,blocks = %d\n",pagesize,pagesize / 512 * pageperblock *blocks,blocks);
	flash_info_t flashinfo;
  ssfdc_nftl_getInfo(0,&flashinfo);
	pinfo->hiddennum = 0;
	pinfo->headnum = 0;
	pinfo->sectnum = 4;
	pinfo->partsize =  flashinfo.dwFSTotalSectors;	
	pinfo->sectorsize = flashinfo.dwDataBytesPerSector;
}
static unsigned int deinit_dev(unsigned handle)
{
	
	if(InitStall == 1)
	{
		printf("udc mount nand fs!\n");
		
		NAND_LB_Deinit();
		FS_IoCtl("nfl:",FS_CMD_MOUNT,0,0);
		InitStall = 0;
	}
		
}
void init_udc_nand()
{

//	printf("InitUdcRam\r\n");
	
	Init_Mass_Storage();
	udcLun.InitDev = init_dev;
	udcLun.ReadDevSector = read_dev_sector;
	udcLun.WriteDevSector = write_dev_sector;
	udcLun.CheckDevState = check_dev_state;
	udcLun.GetDevInfo = get_dev_info;
	udcLun.FlushDev = flush_dev;
	udcLun.DeinitDev = deinit_dev;
	//udcLun.DevName = (unsigned int)'NAND';
	udcLun.DevName = ('N' << 24) | ('A' << 16) | ('N' << 8) | 'D';

	if(RegisterDev(&udcLun))
		printf("UDC Register Fail!!!\r\n");
	//printf("InitUdcRam finish = %08x\r\n",&udcLun);
	
}
#endif