/*!
*
* \par Description:
* This function copy valuable data from log block or dat block to free block, change free to data ,change
* data and log to free.
*
* \param [in] LogNum,serial number within log block space
* \return sucess or failed.
* \note this function was called when log block is not suit for swap or move.
**/
__s32 _free2data_simple_merge(__u32 nlogical)
{
__u8 InData;
__u16 SuperPage;
__u16 SrcPage,DstPage;
__u32 SrcBlk,DstBlk;
struct __SuperPhyBlkType_t DataBlk;
struct __SuperPhyBlkType_t FreeBlk;
struct __LogBlkType_t LogBlk;
struct __PhysicOpPara_t SrcParam,DstParam;
/*init block info*/
BMM_GetDataBlk(nlogical,&DataBlk);
BMM_GetLogBlk(nlogical,&LogBlk);
if (NAND_OP_TRUE != BMM_GetFreeBlk(LOWEST_EC_TYPE, &FreeBlk))
return NAND_OP_FALSE;
/*copy data from data block or log block to free block*/
if((SUPPORT_LOG_BLOCK_MANAGE)&&(LogBlk.LogBlkType == LSB_TYPE))
{
//DBUG_INF("[DBUG] nand lsb type simple merge block %x\n", nlogical);
for (SuperPage = 0; SuperPage < PAGE_CNT_OF_LOGIC_BLK; SuperPage++)
{
/*set source address and destination address*/
DstPage = SuperPage;
DstBlk = FreeBlk.PhyBlkNum;
SrcPage = PMM_GetCurMapPage(SuperPage);
InData = (SrcPage == 0xffff)?1 : 0;
if(InData)
{
SrcBlk = DataBlk.PhyBlkNum;
}
else
{
if(SrcPage&(0x1<<15))
SrcBlk = LogBlk.PhyBlk1.PhyBlkNum;
else
SrcBlk = LogBlk.PhyBlk.PhyBlkNum;
}
SrcPage = InData?SuperPage:(SrcPage&0x7fff);
LML_CalculatePhyOpPar(&SrcParam, CUR_MAP_ZONE,SrcBlk, SrcPage);
LML_CalculatePhyOpPar(&DstParam, CUR_MAP_ZONE,DstBlk, DstPage);
if (DstPage == 0)
{
__u8 SeqPlus;
//SeqPlus = InData?1:0;
SeqPlus = InData?2:1;
if(NAND_OP_FALSE == _copy_page0(SrcBlk, SrcPage, DstBlk,SeqPlus))
{
LOGICCTL_ERR("simple_merge : copy page 0 err\n");
return NAND_OP_FALSE;
}
}
else
{
if(NAND_OP_TRUE != PHY_PageCopyback(&SrcParam,&DstParam))
{
LOGICCTL_ERR("simple merge : copy back err\n");
return NAND_OP_FALSE;
}
}
if(NAND_OP_TRUE != PHY_SynchBank(DstParam.BankNum, SYNC_BANK_MODE))
{
struct __SuperPhyBlkType_t SubBlk;
if(NAND_OP_TRUE != LML_BadBlkManage(&FreeBlk,CUR_MAP_ZONE,DstPage, &SubBlk))
{
LOGICCTL_ERR("simgple merge : bad block manage err after copy back\n");
return NAND_OP_FALSE;
}
FreeBlk = SubBlk;
SuperPage -= 1;
}
}
/*move free block to data block*/
BMM_SetDataBlk(nlogical, &FreeBlk);
/*move erased data block to free block*/
if ( NAND_OP_TRUE != LML_VirtualBlkErase(CUR_MAP_ZONE, DataBlk.PhyBlkNum)){
if (NAND_OP_TRUE != LML_BadBlkManage(&DataBlk,CUR_MAP_ZONE,0,NULL)){
LOGICCTL_ERR("swap merge : bad block manage err erase data block\n");
return NAND_OP_FALSE;
}
}
else{
/*move erased data block to free block*/
if (DataBlk.BlkEraseCnt < 0xffff)
DataBlk.BlkEraseCnt ++;
BMM_SetFreeBlk(&DataBlk);
//DBUG_INF("[DBUG] logic %x simple merge: erase data block: %x\n", LogBlk.LogicBlkNum, DataBlk.PhyBlkNum);
}
/*move erased log block to free block*/
if ( NAND_OP_TRUE != LML_VirtualBlkErase(CUR_MAP_ZONE, LogBlk.PhyBlk.PhyBlkNum)){
if (NAND_OP_TRUE != LML_BadBlkManage(&LogBlk.PhyBlk,CUR_MAP_ZONE,0,NULL)){
LOGICCTL_ERR("simple merge : bad block manage err after erase log block\n");
return NAND_OP_FALSE;
}
}
else{
if (LogBlk.PhyBlk.BlkEraseCnt < 0xffff)
LogBlk.PhyBlk.BlkEraseCnt ++;
BMM_SetFreeBlk(&LogBlk.PhyBlk);
//DBUG_INF("[DBUG] logic %x simple merge: erase log block 0: %x\n", LogBlk.LogicBlkNum, LogBlk.PhyBlk.PhyBlkNum);
}
/*move erased log block to free block*/
if ( NAND_OP_TRUE != LML_VirtualBlkErase(CUR_MAP_ZONE, LogBlk.PhyBlk1.PhyBlkNum)){
if (NAND_OP_TRUE != LML_BadBlkManage(&LogBlk.PhyBlk1,CUR_MAP_ZONE,0,NULL)){
LOGICCTL_ERR("simple merge : bad block manage err after erase log block\n");
return NAND_OP_FALSE;
}
}
else{
if (LogBlk.PhyBlk1.BlkEraseCnt < 0xffff)
LogBlk.PhyBlk1.BlkEraseCnt ++;
BMM_SetFreeBlk(&LogBlk.PhyBlk1);
//DBUG_INF("[DBUG] logic %x simple merge: erase log block 1: %x\n", LogBlk.LogicBlkNum, LogBlk.PhyBlk1.PhyBlkNum);
}
MEMSET(&LogBlk, 0xff, sizeof(struct __LogBlkType_t));
LogBlk.LogBlkType = 0;
LogBlk.WriteBlkIndex = 0;
LogBlk.ReadBlkIndex = 0;
BMM_SetLogBlk(nlogical, &LogBlk);
/*clear page map table*/
PMM_ClearCurMapTbl();
}
else
{
for (SuperPage = 0; SuperPage < PAGE_CNT_OF_LOGIC_BLK; SuperPage++)
{
/*set source address and destination address*/
DstPage = SuperPage;
DstBlk = FreeBlk.PhyBlkNum;
SrcPage = PMM_GetCurMapPage(SuperPage);
InData = (SrcPage == 0xffff)?1 : 0;
SrcBlk = InData?DataBlk.PhyBlkNum : LogBlk.PhyBlk.PhyBlkNum;
SrcPage = InData?SuperPage:SrcPage;
LML_CalculatePhyOpPar(&SrcParam, CUR_MAP_ZONE,SrcBlk, SrcPage);
LML_CalculatePhyOpPar(&DstParam, CUR_MAP_ZONE,DstBlk, DstPage);
if (DstPage == 0)
{
__u8 SeqPlus;
//SeqPlus = InData?1:0;
SeqPlus = InData?2:1;
if(NAND_OP_FALSE == _copy_page0(SrcBlk, SrcPage, DstBlk,SeqPlus))
{
LOGICCTL_ERR("simple_merge : copy page 0 err\n");
return NAND_OP_FALSE;
}
}
else
{
if(NAND_OP_TRUE != PHY_PageCopyback(&SrcParam,&DstParam))
{
LOGICCTL_ERR("simple merge : copy back err\n");
return NAND_OP_FALSE;
}
}
if(NAND_OP_TRUE != PHY_SynchBank(DstParam.BankNum, SYNC_BANK_MODE))
{
struct __SuperPhyBlkType_t SubBlk;
if(NAND_OP_TRUE != LML_BadBlkManage(&FreeBlk,CUR_MAP_ZONE,DstPage, &SubBlk))
{
LOGICCTL_ERR("simgple merge : bad block manage err after copy back\n");
return NAND_OP_FALSE;
}
FreeBlk = SubBlk;
SuperPage -= 1;
}
}
/*move free block to data block*/
BMM_SetDataBlk(nlogical, &FreeBlk);
/*move erased data block to free block*/
if ( NAND_OP_TRUE != LML_VirtualBlkErase(CUR_MAP_ZONE, DataBlk.PhyBlkNum)){
if (NAND_OP_TRUE != LML_BadBlkManage(&DataBlk,CUR_MAP_ZONE,0,NULL)){
LOGICCTL_ERR("swap merge : bad block manage err erase data block\n");
return NAND_OP_FALSE;
}
}
else{
/*move erased data block to free block*/
if (DataBlk.BlkEraseCnt < 0xffff)
DataBlk.BlkEraseCnt ++;
BMM_SetFreeBlk(&DataBlk);
}
/*move erased log block to free block*/
if ( NAND_OP_TRUE != LML_VirtualBlkErase(CUR_MAP_ZONE, LogBlk.PhyBlk.PhyBlkNum)){
if (NAND_OP_TRUE != LML_BadBlkManage(&LogBlk.PhyBlk,CUR_MAP_ZONE,0,NULL)){
LOGICCTL_ERR("move merge : bad block manage err after erase log block\n");
return NAND_OP_FALSE;
}
}
else{
if (LogBlk.PhyBlk.BlkEraseCnt < 0xffff)
LogBlk.PhyBlk.BlkEraseCnt ++;
BMM_SetFreeBlk(&LogBlk.PhyBlk);
}
MEMSET(&LogBlk, 0xff, sizeof(struct __LogBlkType_t));
LogBlk.LogBlkType = 0;
LogBlk.WriteBlkIndex = 0;
LogBlk.ReadBlkIndex = 0;
BMM_SetLogBlk(nlogical, &LogBlk);
/*clear page map table*/
PMM_ClearCurMapTbl();
}
return NAND_OP_TRUE;
}
/*!
*
* \par Description:
* This function copy valuable data from datablk to logblk,then change datablk to freeblk ,change logblk to datablk.
*
* \param [in] LogNum,serial number within log block space
* \return sucess or failed.
* \note this function was called when log block is in order,that is to say physical
* page number is same with logical page number.
**/
__s32 _log2data_swap_merge(__u32 nlogical)
{
__u16 LastUsedPage,SuperPage;
struct __SuperPhyBlkType_t DataBlk;
struct __LogBlkType_t LogBlk;
struct __PhysicOpPara_t SrcParam,DstParam;
/* init info of data block and log block*/
BMM_GetDataBlk(nlogical, &DataBlk);
BMM_GetLogBlk(nlogical, &LogBlk);
LastUsedPage = LogBlk.LastUsedPage;
if((SUPPORT_LOG_BLOCK_MANAGE)&&(LogBlk.LogBlkType == LSB_TYPE))
{
LOGICCTL_ERR("swap merge : LSB type not support swap merge\n");
return NAND_OP_FALSE;
}
/*copy data from data block to log block*/
for (SuperPage = LastUsedPage + 1; SuperPage < PAGE_CNT_OF_SUPER_BLK; SuperPage++){
/*set source and destinate address*/
LML_CalculatePhyOpPar(&SrcParam,CUR_MAP_ZONE, DataBlk.PhyBlkNum, SuperPage);
LML_CalculatePhyOpPar(&DstParam,CUR_MAP_ZONE, LogBlk.PhyBlk.PhyBlkNum, SuperPage);
if (NAND_OP_TRUE != PHY_PageCopyback(&SrcParam,&DstParam)){
LOGICCTL_ERR("swap merge : copy back err\n");
return NAND_OP_FALSE;
}
if (NAND_OP_TRUE != PHY_SynchBank(DstParam.BankNum, SYNC_BANK_MODE)){
struct __SuperPhyBlkType_t SubBlk;
if (NAND_OP_TRUE != LML_BadBlkManage(&LogBlk.PhyBlk,CUR_MAP_ZONE,SuperPage,&SubBlk)){
LOGICCTL_ERR("swap merge : bad block manage err after copy back\n");
return NAND_OP_FALSE;
}
LogBlk.PhyBlk = SubBlk;
SuperPage -= 1;
}
}
/*move log block to data block*/
BMM_SetDataBlk(nlogical, &LogBlk.PhyBlk);
/*clear log block item*/
MEMSET(&LogBlk, 0xff, sizeof(struct __LogBlkType_t));
LogBlk.LogBlkType = 0;
LogBlk.WriteBlkIndex = 0;
LogBlk.ReadBlkIndex = 0;
BMM_SetLogBlk(nlogical, &LogBlk);
/*erase data block*/
if ( NAND_OP_TRUE != LML_VirtualBlkErase(CUR_MAP_ZONE, DataBlk.PhyBlkNum)){
if (NAND_OP_TRUE != LML_BadBlkManage(&DataBlk,CUR_MAP_ZONE,0,NULL)){
LOGICCTL_ERR("swap merge : bad block manage err erase data block\n");
return NAND_OP_FALSE;
}
}
else{
/*move erased data block to free block*/
if (DataBlk.BlkEraseCnt < 0xffff)
DataBlk.BlkEraseCnt ++;
BMM_SetFreeBlk(&DataBlk);
}
/*clear page map table*/
PMM_ClearCurMapTbl();
return NAND_OP_TRUE;
}
/*
************************************************************************************************************************
* NAND FLASH LOGIC MANAGE LAYER WEAR-LEVELLING
*
*Description: Equate the erase cycles among all physical blocks.
*
*Arguments : none
*
*Return : do wear-levelling result;
* = 0 do wear-levelling successful;
* = -1 do wear-levelling failed.
*
*Notes : The erase cycle of a physical block is limited, if the erase cycle overun this
* limit, the physical block may be invalid. so a policy is needed to equate the
* millions of erase cycles to ervery physical block.
************************************************************************************************************************
*/
__s32 LML_WearLevelling(void)
{
#if CFG_SUPPORT_WEAR_LEVELLING
__s32 i, result;
__u32 tmpLogicBlk;
__u16 tmpLowEc = 0xffff;
struct __SuperPhyBlkType_t tmpFreeBlk, tmpDataBlk;
struct __NandUserData_t tmpSpare[2];
struct __PhysicOpPara_t tmpSrcPage, tmpDstPage;
BLK_ERASE_CNTER = 0;
//scan the data block table, to look for a physical block with lowest erase count
for(i=DATA_BLK_CNT_OF_ZONE-1; i>=0; i--)
{
if(DATA_BLK_TBL[i].BlkEraseCnt < tmpLowEc)
{
tmpLowEc = DATA_BLK_TBL[i].BlkEraseCnt;
tmpLogicBlk = i;
}
}
//get a free block which has the highest erase count
result = BMM_GetFreeBlk(HIGHEST_EC_TYPE, &tmpFreeBlk);
if(result < 0)
{
LOGICCTL_ERR("[LOGICCTL_ERR] Get free block failed when do wear-levelling!\n");
return -1;
}
//clear the block erase counter
BLK_ERASE_CNTER = 0;
if(tmpLowEc >= tmpFreeBlk.BlkEraseCnt)
{
if(tmpLowEc == 0xffff)
{
//the lowest erase count reach the highest value, clear erase count of all physical block
for(i=0; i<DATA_BLK_CNT_OF_ZONE; i++)
{
//clear the erase count for the data block
DATA_BLK_TBL[i].BlkEraseCnt = 0x00;
}
for(i=0; i<FREE_BLK_CNT_OF_ZONE; i++)
{
//clear the erase count for the free block
if(FREE_BLK_TBL[i].PhyBlkNum != 0xffff)
{
FREE_BLK_TBL[i].BlkEraseCnt = 0x00;
}
}
for(i=0; i<MAX_LOG_BLK_CNT; i++)
{
//clear the erase count for the log block
if(LOG_BLK_TBL[i].LogicBlkNum != 0xffff)
{
LOG_BLK_TBL[i].PhyBlk.BlkEraseCnt = 0x00;
}
}
}
BMM_SetFreeBlk(&tmpFreeBlk);
return 0;
}
BMM_GetDataBlk(tmpLogicBlk, &tmpDataBlk);
result = BMM_GetLogBlk(tmpLogicBlk, NULL);
if(result < 0)
{
//check if the data block is empty
LML_CalculatePhyOpPar(&tmpSrcPage, CUR_MAP_ZONE, tmpDataBlk.PhyBlkNum, 0);
tmpSrcPage.SectBitmap = 0x03;
tmpSrcPage.MDataPtr = LML_TEMP_BUF;
tmpSrcPage.SDataPtr = (void *)tmpSpare;
LML_VirtualPageRead(&tmpSrcPage);
if(tmpSpare[0].LogicInfo != 0xffff)
{
//need copy data from the data block to the free block
tmpSrcPage.SectBitmap = FULL_BITMAP_OF_SUPER_PAGE;
tmpSrcPage.MDataPtr = NULL;
tmpSrcPage.SDataPtr = NULL;
tmpDstPage.SectBitmap = FULL_BITMAP_OF_SUPER_PAGE;
tmpDstPage.MDataPtr = NULL;
tmpDstPage.SDataPtr = NULL;
for(i=0; i<PAGE_CNT_OF_SUPER_BLK; i++)
{
LML_CalculatePhyOpPar(&tmpSrcPage, CUR_MAP_ZONE, tmpDataBlk.PhyBlkNum, i);
LML_CalculatePhyOpPar(&tmpDstPage, CUR_MAP_ZONE, tmpFreeBlk.PhyBlkNum, i);
PHY_PageCopyback(&tmpSrcPage, &tmpDstPage);
//check page copy result
result = PHY_SynchBank(tmpDstPage.BankNum, SYNC_CHIP_MODE);
if(result < 0)
{
LOGICCTL_DBG("[LOGICCTL_DBG] Copy page failed when doing wear-levelling!\n");
result = LML_BadBlkManage(&tmpFreeBlk, CUR_MAP_ZONE, 0, NULL);
if(result < 0)
{
LOGICCTL_ERR("[LOGICCTL_ERR] Bad block manage failed when doing wear-levelling!\n");
return -1;
}
return 0;
}
}
}
//set the data block item by the free block
BMM_SetDataBlk(tmpLogicBlk, &tmpFreeBlk);
if(tmpSpare[0].LogicInfo != 0xffff)
{
//erase the data block to a new free block
result = LML_VirtualBlkErase(CUR_MAP_ZONE, tmpDataBlk.PhyBlkNum);
if(result < 0)
{
LOGICCTL_DBG("[LOGICCTL_DBG] Erase super block failed when doing wear-levelling!\n");
result = LML_BadBlkManage(&tmpDataBlk, CUR_MAP_ZONE, 0, NULL);
if(result < 0)
{
LOGICCTL_ERR("[LOGICCTL_ERR] Bad block manage failed when doing wear-levelling!\n");
return -1;
}
return 0;
}
}
//set the the data block to free block table
tmpDataBlk.BlkEraseCnt++;
BMM_SetFreeBlk(&tmpDataBlk);
}
else
{
//set the free block back to free table
BMM_SetFreeBlk(&tmpFreeBlk);
}
#endif
return 0;
}
