static void overwriteChunkNew()
{
//uart_print_level_1("25 ");
uart_print("overwriteChunkNew\r\n");
UINT32 nSectsToWrite = (((sectOffset_ % SECTORS_PER_CHUNK) + remainingSects_) < SECTORS_PER_CHUNK) ? remainingSects_ : (SECTORS_PER_CHUNK - (sectOffset_ % SECTORS_PER_CHUNK));
#if MeasureDetailedOverwrite
start_interval_measurement(TIMER_CH3, TIMER_PRESCALE_0);
#endif
if ((sectOffset_ % SECTORS_PER_CHUNK == 0) && (((sectOffset_ + nSectsToWrite) % SECTORS_PER_CHUNK) == 0))
{
overwriteCompleteChunkNew();
#if MeasureDetailedOverwrite
UINT32 timerValue=GET_TIMER_VALUE(TIMER_CH3);
UINT32 nTicks = 0xFFFFFFFF - timerValue;
uart_print_level_2("OCN0 "); uart_print_level_2_int(nTicks); uart_print_level_2("\r\n");
#endif
}
else
{
overwritePartialChunkNew(nSectsToWrite);
#if MeasureDetailedOverwrite
UINT32 timerValue=GET_TIMER_VALUE(TIMER_CH3);
UINT32 nTicks = 0xFFFFFFFF - timerValue;
uart_print_level_2("OCN1 "); uart_print_level_2_int(nTicks); uart_print_level_2("\r\n");
#endif
}
updateOwDramBufMetadata();
updateOwChunkPtr();
sectOffset_ += nSectsToWrite;
remainingSects_ -= nSectsToWrite;
}
static void overwriteCompletePageInOwLog() {
#if DetailedOwStats == 1
uart_print_level_1("-\r\n");
#endif
uart_print("overwriteCompletePageInOwLog\r\n");
#if MeasureDetailedOverwrite
start_interval_measurement(TIMER_CH3, TIMER_PRESCALE_0);
#endif
chooseNewBank_();
manageOldCompletePage();
UINT32 newLogLpn = getOWLpn(bank_);
UINT32 lbn = LogPageToLogBlk(newLogLpn);
UINT32 vBlk = get_log_vbn(bank_, lbn);
UINT32 pageOffset = LogPageToOffset(newLogLpn);
nand_page_ptprogram_from_host(bank_, vBlk, pageOffset, 0, SECTORS_PER_PAGE);
increaseOwCounter(bank_, lbn, pageOffset);
#if MeasureOwEfficiency
write_dram_32(OwEffBuf(bank_, LogPageToLogBlk(newLogLpn)), read_dram_32(OwEffBuf(bank_, LogPageToLogBlk(newLogLpn))) + SECTORS_PER_PAGE);
#endif
for(UINT32 i=0; i<CHUNKS_PER_PAGE; i++)
{
write_dram_32(chunkInLpnsList(OWCtrl[bank_].lpnsListPtr, LogPageToOffset(newLogLpn), i), lpn_);
write_dram_32(ChunksMapTable(lpn_, i), ( (bank_ * LOG_BLK_PER_BANK * CHUNKS_PER_BLK) + (newLogLpn * CHUNKS_PER_PAGE) + i ) | StartOwLogLpn);
}
increaseOWLpn(bank_);
#if MeasureDetailedOverwrite
UINT32 timerValue=GET_TIMER_VALUE(TIMER_CH3);
UINT32 nTicks = 0xFFFFFFFF - timerValue;
uart_print_level_2("OPN0 "); uart_print_level_2_int(nTicks); uart_print_level_2("\r\n");
#endif
}
static void overwritePartialPageOldNotInOrder()
{
//uart_print_level_1("19 ");
uart_print("overwritePartialPageOldNotInOrder\r\n");
while (remainingSects_ != 0)
{
UINT32 chunkIdx = sectOffset_ / SECTORS_PER_CHUNK;
//UINT32 chunkAddr = getChunkAddr(node_, chunkIdx);
UINT32 chunkAddr = read_dram_32(ChunksMapTable(lpn_, chunkIdx));
#if MeasureDetailedOverwrite
start_interval_measurement(TIMER_CH3, TIMER_PRESCALE_0);
#endif
switch (findChunkLocation(chunkAddr))
{
case Invalid:
{
uart_print(" invalid\r\n");
overwriteChunkNew();
break;
}
case FlashWLog:
{
uart_print(" in w log\r\n");
overwriteChunkOldInWLog(chunkAddr);
#if MeasureDetailedOverwrite
UINT32 timerValue=GET_TIMER_VALUE(TIMER_CH3);
UINT32 nTicks = 0xFFFFFFFF - timerValue;
uart_print_level_2("OCO3 "); uart_print_level_2_int(nTicks); uart_print_level_2("\r\n");
#endif
break;
}
case DRAMWLog:
{
uart_print(" in w DRAM buf\r\n");
overwriteChunkOldInWBuf(chunkAddr);
#if MeasureDetailedOverwrite
UINT32 timerValue=GET_TIMER_VALUE(TIMER_CH3);
UINT32 nTicks = 0xFFFFFFFF - timerValue;
uart_print_level_2("OCO2 "); uart_print_level_2_int(nTicks); uart_print_level_2("\r\n");
#endif
break;
}
case DRAMOwLog:
{
uart_print(" in ow DRAM buf\r\n");
chunkAddr = chunkAddr & 0x7FFFFFFF;
overwriteChunkOldInOwBuf(chunkAddr);
#if MeasureDetailedOverwrite
UINT32 timerValue=GET_TIMER_VALUE(TIMER_CH3);
UINT32 nTicks = 0xFFFFFFFF - timerValue;
uart_print_level_2("OCO0 "); uart_print_level_2_int(nTicks); uart_print_level_2("\r\n");
#endif
break;
}
case FlashOwLog:
{
uart_print(" in ow log\r\n");
chunkAddr = chunkAddr & 0x7FFFFFFF;
overwriteChunkOldInOwLog(chunkAddr);
#if MeasureDetailedOverwrite
UINT32 timerValue=GET_TIMER_VALUE(TIMER_CH3);
UINT32 nTicks = 0xFFFFFFFF - timerValue;
uart_print_level_2("OCO1 "); uart_print_level_2_int(nTicks); uart_print_level_2("\r\n");
#endif
break;
}
}
}
// SATA buffer management
g_ftl_write_buf_id = (g_ftl_write_buf_id + 1) % NUM_WR_BUFFERS;
SETREG (BM_STACK_WRSET, g_ftl_write_buf_id);
SETREG (BM_STACK_RESET, 0x01);
}
static void overwritePageOldInOrderInOwLog()
{
#if MeasureDetailedOverwrite
start_interval_measurement(TIMER_CH3, TIMER_PRESCALE_0);
#endif
uart_print("overwritePageOldInOrderInOwLog\r\n");
UINT32 firstChunk = sectOffset_ / SECTORS_PER_CHUNK;
UINT32 chunk = read_dram_32(ChunksMapTable(lpn_, firstChunk));
chunk = chunk & 0x7FFFFFFF;
UINT32 bank = ChunkToBank(chunk);
UINT32 lbn = ChunkToLbn(chunk);
UINT32 vBlk = get_log_vbn(bank, lbn);
UINT32 pageOffset = ChunkToPageOffset(chunk);
if(readOwCounter(bank, lbn, pageOffset) < OwLimit)
{
#if DetailedOwStats == 1
uart_print_level_1("*\r\n");
#endif
uart_print("Can overwrite in place\r\n");
nand_page_ptprogram_from_host(bank, vBlk, pageOffset, sectOffset_, nSects_);
increaseOwCounter(bank, lbn, pageOffset);
#if MeasureOwEfficiency
write_dram_32(OwEffBuf(bank_, ChunkToLbn(chunk)), read_dram_32(OwEffBuf(bank_, ChunkToLbn(chunk))) + nSects_);
#endif
}
else
{
uart_print("Exceeding limit, must find a new page\r\n");
if (remainingSects_ == SECTORS_PER_PAGE)
{
overwriteCompletePageInOwLog();
}
else
{
syncWithWriteLimit();
UINT16 invalidChunksToDecrement = 0;
chooseNewBank_();
while(remainingSects_)
{
invalidChunksToDecrement++;
UINT32 nSectsToWrite = (((sectOffset_ % SECTORS_PER_CHUNK) + remainingSects_) < SECTORS_PER_CHUNK) ? remainingSects_ :
(SECTORS_PER_CHUNK - (sectOffset_ % SECTORS_PER_CHUNK));
if(nSectsToWrite == SECTORS_PER_CHUNK)
{
uart_print("Copy chunk "); uart_print_int( (sectOffset_ % SECTORS_PER_CHUNK) / SECTORS_PER_CHUNK); uart_print(" to OW_LOG_BUF\r\n");
overwriteCompleteChunkNew();
updateOwDramBufMetadata();
updateOwChunkPtr();
}
else
{
UINT32 chunkIdx = sectOffset_ / SECTORS_PER_CHUNK;
chunk = read_dram_32(ChunksMapTable(lpn_, chunkIdx));
chunk = chunk & 0x7FFFFFFF;
overwritePartialChunkWhenOldChunkIsInExhaustedOWLog(nSectsToWrite, chunk);
updateOwDramBufMetadata();
updateOwChunkPtr();
}
sectOffset_ += nSectsToWrite;
remainingSects_ -= nSectsToWrite;
}
decrementValidChunksByN(&heapDataOverwrite, bank, lbn, invalidChunksToDecrement);
g_ftl_write_buf_id = (g_ftl_write_buf_id + 1) % NUM_WR_BUFFERS;
SETREG (BM_STACK_WRSET, g_ftl_write_buf_id);
SETREG (BM_STACK_RESET, 0x01);
}
}
#if MeasureDetailedOverwrite
UINT32 timerValue=GET_TIMER_VALUE(TIMER_CH3);
UINT32 nTicks = 0xFFFFFFFF - timerValue;
uart_print_level_2("OPIO "); uart_print_level_2_int(nTicks); uart_print_level_2("\r\n");
#endif
}
void ptimer_start_scale0(void)
{
start_interval_measurement(TIMER_CH2, TIMER_PRESCALE_0);
}
void ptimer_start(void)
{
start_interval_measurement(TIMER_CH1, TIMER_PRESCALE_2);
}
