/*
************************************************************************************************************************
* RESTORE VALID PAGE DATA FROM BAD BLOCK
*
*Description: Restore the valid page data from the bad block.
*
*Arguments : pBadBlk the pointer to the bad physical block parameter;
* nErrPage the number of the error page;
* pNewBlk the pointer to the new valid block parameter.
*
*Return : restore page data result;
* = 0 restore data successful;
* = -1 restore data failed.
************************************************************************************************************************
*/
static __s32 _RestorePageData(struct __SuperPhyBlkType_t *pBadBlk, __u32 nZoneNum, __u32 nErrPage, struct __SuperPhyBlkType_t *pNewBlk)
{
__s32 i, result;
struct __PhysicOpPara_t tmpSrcPage, tmpDstPage;
//set sector bitmap and buffer pointer for copy nand flash page
tmpSrcPage.SectBitmap = FULL_BITMAP_OF_SUPER_PAGE;
tmpDstPage.SectBitmap = FULL_BITMAP_OF_SUPER_PAGE;
tmpSrcPage.MDataPtr = NULL;
tmpSrcPage.SDataPtr = NULL;
for(i=0; i<nErrPage; i++)
{
//calculate source page and destination page parameter for copy nand page
LML_CalculatePhyOpPar(&tmpSrcPage, nZoneNum, pBadBlk->PhyBlkNum, i);
LML_CalculatePhyOpPar(&tmpDstPage, nZoneNum, pNewBlk->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 restore bad block data!\n");
return -1;
}
}
return 0;
}
/*
************************************************************************************************************************
* CALCLUATE PROCESSING DATA PARAMETER
*
*Description: Calculate the loigcal pages number and the sector bitmap in the page for the sectors
* that pocessing currently.
*
*Arguments : nSectNum the number of the first sector of the sectors need be processed;
* nSectCnt the count of the sectors that how many sectors need be processed;
* pHeadPage the pointer to the paramter of the head page;
* pMidPageCnt the pointer ot the count of full pages;
* pTailPage the pointer to the paramter of the tail page.
*
*Return : calculate sector parameter result;
* = 0 calculate sector parameter successful;
* < 0 calcualte sector parameter failed.
************************************************************************************************************************
*/
static __s32 _CalculateSectPar(__u32 nSectNum, __u32 nSectCnt, struct __GlobalLogicPageType_t *pHeadPage,
__u32 *pMidPageCnt, struct __GlobalLogicPageType_t *pTailPage)
{
__u32 tmpSectCnt, tmpBitmap;
LOGICCTL_DBG("[LOGICCTL_DBG]: Calculate logical sectors parameter, Lba:0x%x, Cnt:0x%x\n", nSectNum, nSectCnt);
//initiate the middle page and tail page parameters, because they may be empty
*pMidPageCnt = 0x00;
pTailPage->LogicPageNum = 0xffffffff;
pTailPage->SectorBitmap = 0x00;
//calculate the head page parameter
pHeadPage->LogicPageNum = nSectNum / SECTOR_CNT_OF_LOGIC_PAGE;
tmpSectCnt = nSectCnt + (nSectNum % SECTOR_CNT_OF_LOGIC_PAGE);
tmpBitmap = (FULL_BITMAP_OF_LOGIC_PAGE << (nSectNum % SECTOR_CNT_OF_LOGIC_PAGE));
if(tmpSectCnt > SECTOR_CNT_OF_LOGIC_PAGE)
{
//set the head page bitmap
pHeadPage->SectorBitmap = tmpBitmap & FULL_BITMAP_OF_LOGIC_PAGE;
//calcualte the count of full pages
tmpSectCnt -= SECTOR_CNT_OF_LOGIC_PAGE;
while(tmpSectCnt >= SECTOR_CNT_OF_LOGIC_PAGE)
{
++*pMidPageCnt;
tmpSectCnt -= SECTOR_CNT_OF_LOGIC_PAGE;
}
//calculate parameter for the tail page
if(tmpSectCnt)
{
//calcualte the tail page sector bitmap
pTailPage->SectorBitmap = FULL_BITMAP_OF_LOGIC_PAGE >> (SECTOR_CNT_OF_LOGIC_PAGE - tmpSectCnt);
//calculate the number of the tail page
pTailPage->LogicPageNum = pHeadPage->LogicPageNum + *pMidPageCnt + 1;
}
}
/*
************************************************************************************************************************
* WRITE BAD FLAG TO BAD BLOCK
*
*Description: Write bad block flag to bad block.
*
*Arguments : pBadBlk the pointer to the bad physical block parameter.
*
*Return : mark bad block result;
* = 0 mark bad block successful;
* = -1 mark bad block failed.
************************************************************************************************************************
*/
static __s32 _MarkBadBlk(struct __SuperPhyBlkType_t *pBadBlk, __u32 nZoneNum)
{
__s32 i;
__s32 ret;
struct __PhysicOpPara_t tmpPage;
struct __NandUserData_t tmpSpare[2];
//add by neil 20101201
/* erase bad blcok */
ret = LML_VirtualBlkErase(nZoneNum, pBadBlk->PhyBlkNum);
if(ret)
{
LOGICCTL_DBG("[LOGICCTL_DBG] erase bad block fail!\n");
}
//set the spare area data for write
MEMSET((void *)tmpSpare, 0x00, 2*sizeof(struct __NandUserData_t));
tmpPage.SectBitmap = FULL_BITMAP_OF_SUPER_PAGE;
tmpPage.MDataPtr = LML_TEMP_BUF;
tmpPage.SDataPtr = (void *)tmpSpare;
//write the bad flag in ervery single physical block of the super block
for(i=0; i<INTERLEAVE_BANK_CNT; i++)
{
//write the bad flag in the first page of the physical block
LML_CalculatePhyOpPar(&tmpPage, nZoneNum, pBadBlk->PhyBlkNum, i);
LML_VirtualPageWrite(&tmpPage);
PHY_SynchBank(tmpPage.BankNum, SYNC_CHIP_MODE);
//write the bad flag in the last page of the physical block
LML_CalculatePhyOpPar(&tmpPage, nZoneNum, pBadBlk->PhyBlkNum, PAGE_CNT_OF_SUPER_BLK - INTERLEAVE_BANK_CNT + i);
LML_VirtualPageWrite(&tmpPage);
PHY_SynchBank(tmpPage.BankNum, SYNC_CHIP_MODE);
}
return 0;
}
/*
************************************************************************************************************************
* GET LOG PAGE FOR WRITE
*
*Description: Get a log page for write.
*
*Arguments : nBlk the logical block number of the log block;
* nPage the number of the logical page, which page need log page;
* pLogPage the pointer to the log page number, for return value;
* pLogPst the pointer to the position of the log block in the log block table.
*
*Return : get log page result.
* = 0 get log page for write successful;
* =-1 get log page for write failed.
************************************************************************************************************************
*/
static __s32 _GetLogPageForWrite(__u32 nBlk, __u32 nPage, __u16 *pLogPage, __u32 *pLogPst)
{
__s32 result, tmpLogPst;
__u16 tmpPage, tempBank;
struct __PhysicOpPara_t tmpPhyPage;
struct __NandUserData_t tmpSpare[2];
tmpLogPst = _GetLogBlkPst(nBlk);
if(tmpLogPst < 0)
{
//get log block position failed, there is no such log block, need create a new one
result = _CreateNewLogBlk(nBlk, (__u32 *)&tmpLogPst);
if(result < 0)
{
MAPPING_ERR("[MAPPING_ERR] Create new log block failed!\n");
return -1;
}
}
//need swap the page mapping table to ram which is accessing currently
result = PMM_SwitchMapTbl(tmpLogPst);
if(result < 0)
{
MAPPING_ERR("[MAPPING_ERR] Switch page mapping table failed when get log page! Err:0x%x\n", result);
return -1;
}
//need get log page by write mode,
tmpPage = LOG_BLK_TBL[tmpLogPst].LastUsedPage;
if(SUPPORT_ALIGN_NAND_BNK)
{
if(tmpPage == 0xffff)
{
//the log block is empty, need get log page in the first page line
tmpPage = nPage % INTERLEAVE_BANK_CNT;
}
else
{
//need bank align, the log page and the data page should be in the same bank
if((nPage % INTERLEAVE_BANK_CNT) > (tmpPage % INTERLEAVE_BANK_CNT))
{
//get the log page in the same page line with last used page
tmpPage = tmpPage + ((nPage % INTERLEAVE_BANK_CNT) - (tmpPage % INTERLEAVE_BANK_CNT));
}
else
{
//need get the log page in the next page line of the last used page
tmpPage = tmpPage + (nPage % INTERLEAVE_BANK_CNT) + (INTERLEAVE_BANK_CNT - (tmpPage % INTERLEAVE_BANK_CNT));
}
}
}
else
{
//use the page which is the next of the last used page
tmpPage = tmpPage + 1;
}
if((SUPPORT_LOG_BLOCK_MANAGE)&&(LOG_BLK_TBL[tmpLogPst].LogBlkType == LSB_TYPE))
{
DBUG_MSG("[DBUG_MSG] _GetLogPageForWrite, select bak log block\n");
if(SUPPORT_ALIGN_NAND_BNK)
{
tempBank = tmpPage%INTERLEAVE_BANK_CNT;
tmpPage =PMM_CalNextLogPage(tmpPage);
while(tmpPage%INTERLEAVE_BANK_CNT != tempBank)
{
tmpPage++;
tmpPage =PMM_CalNextLogPage(tmpPage);
if(tmpPage>=PAGE_CNT_OF_SUPER_BLK)
break;
}
}
else
{
tmpPage =PMM_CalNextLogPage(tmpPage);
}
if((tmpPage >= PAGE_CNT_OF_SUPER_BLK)&&(LOG_BLK_TBL[tmpLogPst].WriteBlkIndex == 0))
{
LOG_BLK_TBL[tmpLogPst].WriteBlkIndex = 1;
tmpPage = tmpPage - PAGE_CNT_OF_SUPER_BLK;
}
if(LOG_BLK_TBL[tmpLogPst].WriteBlkIndex == 1)
DBUG_MSG("[DBUG_MSG] _GetLogPageForWrite, log block index: %x, log block num: %x, page: %x \n", LOG_BLK_TBL[tmpLogPst].WriteBlkIndex, LOG_BLK_TBL[tmpLogPst].PhyBlk1.PhyBlkNum, tmpPage);
else
DBUG_MSG("[DBUG_MSG] _GetLogPageForWrite, log block index: %x, log block num: %x, page: %x \n", LOG_BLK_TBL[tmpLogPst].WriteBlkIndex, LOG_BLK_TBL[tmpLogPst].PhyBlk.PhyBlkNum, tmpPage);
}
__CHECK_WRITE_LOGICAL_INFO_OF_LOG_BLOCK:
//check if need write the logical information in the first page of the log block
if((LOG_BLK_TBL[tmpLogPst].LastUsedPage == 0xffff) && (tmpPage != 0))
{
//get logical information from the data block
LML_CalculatePhyOpPar(&tmpPhyPage, CUR_MAP_ZONE, DATA_BLK_TBL[nBlk].PhyBlkNum, 0);
tmpPhyPage.SectBitmap = 0x03;
tmpPhyPage.MDataPtr = LML_TEMP_BUF;
tmpPhyPage.SDataPtr = (void *)tmpSpare;
LML_VirtualPageRead(&tmpPhyPage);
//if((SUPPORT_LOG_BLOCK_MANAGE)&&(LOG_BLK_TBL[tmpLogPst].LogBlkType == LSB_TYPE))
//{
// PRINT("_GetLogPageForWrite log %x page 0, data age: %x, log age: %x\n", LOG_BLK_TBL[tmpLogPst].WriteBlkIndex, tmpSpare[0].PageStatus, tmpSpare[0].PageStatus+1);
//}
tmpSpare[0].BadBlkFlag = 0xff;
tmpSpare[1].BadBlkFlag = 0xff;
tmpSpare[0].LogicInfo = ((CUR_MAP_ZONE % ZONE_CNT_OF_DIE)<<10) | nBlk;
tmpSpare[1].LogicInfo = ((CUR_MAP_ZONE % ZONE_CNT_OF_DIE)<<10) | nBlk;
tmpSpare[0].LogicPageNum = 0xffff;
tmpSpare[1].LogicPageNum = 0xffff;
tmpSpare[0].PageStatus = tmpSpare[0].PageStatus + 1;
tmpSpare[1].PageStatus = tmpSpare[0].PageStatus;
if((SUPPORT_LOG_BLOCK_MANAGE)&&(LOG_BLK_TBL[tmpLogPst].LogBlkType == LSB_TYPE))
{
tmpSpare[0].LogType = LSB_TYPE|(LOG_BLK_TBL[tmpLogPst].WriteBlkIndex<<4);
tmpSpare[1].LogType = LSB_TYPE|(LOG_BLK_TBL[tmpLogPst].WriteBlkIndex<<4);
}
else
{
tmpSpare[0].LogType = 0xff;
tmpSpare[1].LogType = 0xff;
}
//write the logical information to the spare area of the data block
if((SUPPORT_LOG_BLOCK_MANAGE)&&(LOG_BLK_TBL[tmpLogPst].LogBlkType == LSB_TYPE))
{
DBUG_MSG("[DBUG] _GetLogPageForWrite, write the logical information to log page 0, writeblkindex: %x\n", LOG_BLK_TBL[tmpLogPst].WriteBlkIndex);
LML_CalculatePhyOpPar(&tmpPhyPage, CUR_MAP_ZONE, LOG_BLK_TBL[tmpLogPst].PhyBlk.PhyBlkNum, 0);
}
else
LML_CalculatePhyOpPar(&tmpPhyPage, CUR_MAP_ZONE, LOG_BLK_TBL[tmpLogPst].PhyBlk.PhyBlkNum, 0);
tmpPhyPage.SectBitmap = FULL_BITMAP_OF_SUPER_PAGE;
result = LML_VirtualPageWrite(&tmpPhyPage);
if(result < 0)
{
LOGICCTL_ERR("[MAPPING_ERR] Physical write module failed when write logical information, Err:0x%x!\n", result);
return -1;
}
result = PHY_SynchBank(tmpPhyPage.BankNum, SYNC_CHIP_MODE);
if(result < 0)
{
//the last write operation on current bank is failed, the block is bad, need proccess it
LOGICCTL_DBG("[LOGICCTL_DBG] Find a bad block when write logical page! bank:0x%x, block:0x%x, page:0x%x\n",
tmpPhyPage.BankNum, tmpPhyPage.BlkNum, tmpPhyPage.PageNum);
//process the bad block
result = LML_BadBlkManage(&LOG_BLK_TBL[tmpLogPst].PhyBlk, CUR_MAP_ZONE, 0, &LOG_BLK_TBL[tmpLogPst].PhyBlk);
if(result < 0)
{
LOGICCTL_ERR("[MAPPING_ERR] Bad block process failed when get log page for write, Err:0x%x!\n", result);
return -1;
}
goto __CHECK_WRITE_LOGICAL_INFO_OF_LOG_BLOCK;
}
}
//set the log page number for return
*pLogPage = tmpPage;
*pLogPst = tmpLogPst;
return 0;
}
/*
************************************************************************************************************************
* CREATE A NEW LOG BLOCK
*
*Description: Create a new log block.
*
*Arguments : nBlk the logical block number of the log block;
* pLogPst the pointer to the log block position in the log block table.
*
*Return : create new log block result.
* = 0 create new log block successful;
* =-1 create new log block failed.
************************************************************************************************************************
*/
static __s32 _CreateNewLogBlk(__u32 nBlk, __u32 *pLogPst)
{
__s32 i, result, LogBlkType,tmpPst=-1;
__u16 tmpLogAccessAge = 0xffff;
struct __SuperPhyBlkType_t tmpFreeBlk, tmpFreeBlk1;
struct __PhysicOpPara_t tmpPhyPage;
struct __NandUserData_t tmpSpare[2];
#if CFG_SUPPORT_WEAR_LEVELLING
//check if need do wear-levelling
if(BLK_ERASE_CNTER >= WEAR_LEVELLING_FREQUENCY)
{
LML_WearLevelling();
}
#endif
//try to search an empty item in the log block table
for(i=0; i<LOG_BLK_CNT_OF_ZONE; i++)
{
if(LOG_BLK_TBL[i].LogicBlkNum == 0xffff)
{
//find a empty item
tmpPst = i;
break;
}
}
//there is no empty item in the log block table, need merge a log block
if(tmpPst == -1)
{
//check if there is some full log block
for(i=0; i<LOG_BLK_CNT_OF_ZONE; i++)
{
if(LOG_BLK_TBL[i].LastUsedPage == PAGE_CNT_OF_SUPER_BLK-1)
{
tmpPst = i;
break;
}
}
if(tmpPst == -1)
{
//there is no full log block, look for an oldest log block to merge
for(i=0; i<LOG_BLK_CNT_OF_ZONE; i++)
{
if(LOG_ACCESS_AGE[i] < tmpLogAccessAge)
{
tmpLogAccessAge = LOG_ACCESS_AGE[i];
tmpPst = i;
}
}
}
//switch the page mapping table for merge the log block
result = PMM_SwitchMapTbl(tmpPst);
if(result < 0)
{
MAPPING_ERR("[MAPPING_ERR] Switch page mapping table failed when create new log block! Err:0x%x\n", result);
return -1;
}
//merge the log block with normal type, to make an empty item
result = LML_MergeLogBlk(NORMAL_MERGE_MODE, LOG_BLK_TBL[tmpPst].LogicBlkNum);
if(result < 0)
{
//merge log block failed, report error
MAPPING_ERR("[MAPPING_ERR] Merge log block failed when create new log block! Err:0x%x\n", result);
return -1;
}
}
LogBlkType = BMM_CalLogBlkType(nBlk);
if((SUPPORT_LOG_BLOCK_MANAGE)&&(LogBlkType == LSB_TYPE))
{
DBUG_MSG("[DBUG_MSG] _CreateNewLogBlk, select bak log block\n");
//get a free block to create a new log block
result = BMM_GetFreeBlk(LOWEST_EC_TYPE, &tmpFreeBlk);
if(result < 0)
{
MAPPING_ERR("[MAPPING_ERR] Get free block failed when create new log block!\n");
return -1;
}
//get a free block to create a new log block
result = BMM_GetFreeBlk(LOWEST_EC_TYPE, &tmpFreeBlk1);
if(result < 0)
{
MAPPING_ERR("[MAPPING_ERR] Get free block failed when create new log block!\n");
return -1;
}
//DBUG_INF("[DBUG] _CreateNewLogBlk, logic: %x, logblk0: %x, logblk1:%x \n", nBlk, tmpFreeBlk.PhyBlkNum, tmpFreeBlk1.PhyBlkNum);
//make a new log item in the log block table
LOG_BLK_TBL[tmpPst].LogicBlkNum = nBlk;
LOG_BLK_TBL[tmpPst].LastUsedPage = 0xffff;
LOG_BLK_TBL[tmpPst].LogBlkType = LogBlkType;
LOG_BLK_TBL[tmpPst].WriteBlkIndex = 0;
LOG_BLK_TBL[tmpPst].ReadBlkIndex = 0;
LOG_BLK_TBL[tmpPst].PhyBlk = tmpFreeBlk;
LOG_BLK_TBL[tmpPst].PhyBlk1 = tmpFreeBlk1;
//set the return vaule of the log position
*pLogPst = tmpPst;
}
else
{
//get a free block to create a new log block
result = BMM_GetFreeBlk(LOWEST_EC_TYPE, &tmpFreeBlk);
if(result < 0)
{
MAPPING_ERR("[MAPPING_ERR] Get free block failed when create new log block!\n");
return -1;
}
//make a new log item in the log block table
LOG_BLK_TBL[tmpPst].LogicBlkNum = nBlk;
LOG_BLK_TBL[tmpPst].LastUsedPage = 0xffff;
LOG_BLK_TBL[tmpPst].LogBlkType = LogBlkType;
LOG_BLK_TBL[tmpPst].WriteBlkIndex = 0;
LOG_BLK_TBL[tmpPst].ReadBlkIndex = 0;
LOG_BLK_TBL[tmpPst].PhyBlk = tmpFreeBlk;
//set the return vaule of the log position
*pLogPst = tmpPst;
}
__CHECK_LOGICAL_INFO_OF_DATA_BLOCK:
//check if the data block is an empty block, if so, need update the logic information in the spare area
LML_CalculatePhyOpPar(&tmpPhyPage, CUR_MAP_ZONE, DATA_BLK_TBL[nBlk].PhyBlkNum, 0);
tmpPhyPage.SectBitmap = 0x03;
tmpPhyPage.MDataPtr = LML_TEMP_BUF;
tmpPhyPage.SDataPtr = (void *)tmpSpare;
LML_VirtualPageRead(&tmpPhyPage);
if(tmpSpare[0].LogicInfo == 0xffff)
{
tmpSpare[0].BadBlkFlag = 0xff;
tmpSpare[1].BadBlkFlag = 0xff;
tmpSpare[0].LogicInfo = ((CUR_MAP_ZONE % ZONE_CNT_OF_DIE)<<10) | nBlk;
tmpSpare[1].LogicInfo = ((CUR_MAP_ZONE % ZONE_CNT_OF_DIE)<<10) | nBlk;
tmpSpare[0].LogicPageNum = 0xffff;
tmpSpare[1].LogicPageNum = 0xffff;
tmpSpare[0].PageStatus = 0xff;
tmpSpare[1].PageStatus = 0xff;
//write the logical information to the spare area of the data block
tmpPhyPage.SectBitmap = FULL_BITMAP_OF_SUPER_PAGE;
result = LML_VirtualPageWrite(&tmpPhyPage);
if(result < 0)
{
LOGICCTL_ERR("[MAPPING_ERR] Physical write module failed when write logical information, Err:0x%x!\n", result);
return -1;
}
result = PHY_SynchBank(tmpPhyPage.BankNum, SYNC_CHIP_MODE);
if(result < 0)
{
//the last write operation on current bank is failed, the block is bad, need proccess it
LOGICCTL_DBG("[LOGICCTL_DBG] Find a bad block when write logical page! bank:0x%x, block:0x%x, page:0x%x\n",
tmpPhyPage.BankNum, tmpPhyPage.BlkNum, tmpPhyPage.PageNum);
//process the bad block
result = LML_BadBlkManage(&DATA_BLK_TBL[nBlk], CUR_MAP_ZONE, 0, &tmpFreeBlk);
if(result < 0)
{
LOGICCTL_ERR("[MAPPING_ERR] Bad block process failed when create new log block, Err:0x%x!\n", result);
return -1;
}
DATA_BLK_TBL[nBlk] = tmpFreeBlk;
goto __CHECK_LOGICAL_INFO_OF_DATA_BLOCK;
}
}
return 0;
}
/*
************************************************************************************************************************
* 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;
}
