void nand_page_program(UINT32 const bank, UINT32 const vblock, UINT32 const page_num, UINT32 const buf_addr, UINT32 const issue_flag)
{
#if PrintStats
uart_print_level_1("FP ");
uart_print_level_1_int(SECTORS_PER_PAGE);
uart_print_level_1("\r\n");
#endif
totSecWrites += SECTORS_PER_PAGE;
UINT32 row;
ASSERT(bank < NUM_BANKS);
ASSERT(vblock < VBLKS_PER_BANK);
ASSERT(page_num < PAGES_PER_BLK);
row = (vblock * PAGES_PER_BLK) + page_num;
uart_print("nand_page_program bank="); uart_print_int(bank);
uart_print(", vblock="); uart_print_int(vblock);
uart_print(", page="); uart_print_int(page_num); uart_print("\r\n");
uart_print("Writing row="); uart_print_int(row); uart_print("\r\n");
SETREG(FCP_CMD, FC_COL_ROW_IN_PROG);
SETREG(FCP_OPTION, FO_P | FO_E | FO_B_W_DRDY);
SETREG(FCP_DMA_ADDR, buf_addr);
SETREG(FCP_DMA_CNT, BYTES_PER_PAGE);
SETREG(FCP_COL, 0);
SETREG(FCP_ROW_L(bank), row);
SETREG(FCP_ROW_H(bank), row);
//flash_issue_cmd(bank, RETURN_WHEN_DONE);
//flash_issue_cmd(bank, RETURN_ON_ACCEPT);
//flash_issue_cmd(bank, RETURN_ON_ISSUE);
flash_issue_cmd(bank, issue_flag);
}
void flush_smt_piece(UINT32 idx)
{
UINT32 bank,row,block;
UINT32 dest;
bank = smt_dram_map[idx] / NUM_BANKS_MAX;
block = smt_dram_map[idx] % NUM_BANKS_MAX;
if((smt_bit_map[bank] & (1<<block)) != 0){
// smt piece data
if( g_misc_meta[bank].smt_pieces[block] >= SMT_LIMIT - 1){
// erase
nand_block_erase(bank,g_bad_list[bank][block]);
}
//update and flash
g_misc_meta[bank].smt_pieces[block] = (g_misc_meta[bank].smt_pieces[block] + 1) % SMT_LIMIT;
row = g_misc_meta[bank].smt_pieces[block] * SMT_INC_SIZE + ( PAGES_PER_VBLK * g_bad_list[bank][block]);
// flash map data to nand
SETREG(FCP_CMD, FC_COL_ROW_IN_PROG);
SETREG(FCP_OPTION, FO_P | FO_E | FO_B_W_DRDY);
SETREG(FCP_COL,0);
SETREG(FCP_ROW_L(bank),row);
SETREG(FCP_ROW_H(bank),row);
dest = SMT_ADDR + (idx * SMT_PIECE_BYTES);
SETREG(FCP_DMA_ADDR,dest);
SETREG(FCP_DMA_CNT, SMT_PIECE_BYTES);
while(_BSP_FSM(bank) != BANK_IDLE)
{
bank = bank;
}
flash_issue_cmd(bank,RETURN_WHEN_DONE);
}
smt_piece_map[smt_dram_map[idx]] = (UINT32)-1;
}
// synchronous one full page read
void nand_page_read(UINT32 const bank, UINT32 const vblock, UINT32 const page_num, UINT32 const buf_addr)
{
#if PrintStats
uart_print_level_1("FR ");
uart_print_level_1_int(SECTORS_PER_PAGE);
uart_print_level_1("\r\n");
#endif
UINT32 row;
ASSERT(bank < NUM_BANKS);
ASSERT(vblock < VBLKS_PER_BANK);
ASSERT(page_num < PAGES_PER_BLK);
row = (vblock * PAGES_PER_BLK) + page_num; // row means ppn
uart_print("nand_page_read bank="); uart_print_int(bank);
uart_print(", vblock="); uart_print_int(vblock);
uart_print(", page="); uart_print_int(page_num);
uart_print(", dst_addr="); uart_print_int(buf_addr); uart_print("\r\n");
uart_print("Reading row="); uart_print_int(row); uart_print("\r\n");
SETREG(FCP_CMD, FC_COL_ROW_READ_OUT);
SETREG(FCP_OPTION, FO_P | FO_E);
SETREG(FCP_DMA_ADDR, buf_addr);
SETREG(FCP_DMA_CNT, BYTES_PER_PAGE);
SETREG(FCP_COL, 0);
SETREG(FCP_ROW_L(bank), row);
SETREG(FCP_ROW_H(bank), row);
flash_issue_cmd(bank, RETURN_WHEN_DONE);
}
// General purpose page read function
// synchronous page read (for reading metadata)
// asynchronous page read (left/right hole async read user data)
void nand_page_ptread(UINT32 const bank, UINT32 const vblock, UINT32 const page_num, UINT32 const sect_offset, UINT32 const num_sectors, UINT32 const buf_addr, UINT32 const issue_flag)
{
UINT32 row;
/* uart_printf("--ptread: bank %d vblock %d page_num %d sect_offset %d, num_sectors %d", bank, vblock, page_num, sect_offset, num_sectors); */
ASSERT(bank < NUM_BANKS);
ASSERT(vblock < VBLKS_PER_BANK);
ASSERT(page_num < PAGES_PER_BLK);
// row means ppn
row = (vblock * PAGES_PER_BLK) + page_num;
SETREG(FCP_CMD, FC_COL_ROW_READ_OUT);
SETREG(FCP_OPTION, FO_P | FO_E);
SETREG(FCP_DMA_ADDR, buf_addr);
SETREG(FCP_DMA_CNT, num_sectors * BYTES_PER_SECTOR);
SETREG(FCP_COL, sect_offset);
SETREG(FCP_ROW_L(bank), row);
SETREG(FCP_ROW_H(bank), row);
// issue_flag:
// RETURN_ON_ISSUE, RETURN_WHEN_DONE, RETURN_ON_ACCEPT
flash_issue_cmd(bank, issue_flag);
}
void flush_smt_piece(UINT32 idx)
{
UINT32 bank,row,block;
bank = smt_dram_map[idx] / NUM_BANKS_MAX;
block = smt_dram_map[idx] % NUM_BANKS_MAX;
if((smt_bit_map[bank] & (1<<block)) != 0){
// smt piece data
if( g_misc_meta[bank].smt_pieces[block] >= SMT_LIMIT - 1){
// erase
nand_block_erase(bank,g_bad_list[bank][block]);
}
//update and flash
g_misc_meta[bank].smt_pieces[block] = (g_misc_meta[bank].smt_pieces[block] + SMT_INC_SIZE) % SMT_LIMIT;
row = (g_misc_meta[bank].smt_pieces[block] * SMT_PIECE_BYTES);
row = ((row + BYTES_PER_PAGE -1 ) / BYTES_PER_PAGE) + (PAGES_PER_VBLK * g_bad_list[bank][block]);
// flash map data to nand
SETREG(FCP_CMD, FC_COL_ROW_IN_PROG);
SETREG(FCP_OPTION, FO_P | FO_E | FO_B_W_DRDY);
SETREG(FCP_DMA_ADDR,SMT_ADDR + (g_smt_victim * SMT_PIECE_BYTES));
SETREG(FCP_DMA_CNT, SMT_PIECE_BYTES);
SETREG(FCP_COL,0);
SETREG(FCP_ROW_L(bank),row);
SETREG(FCP_ROW_H(bank),row);
flash_issue_cmd(bank,RETURN_ON_ISSUE);
}
smt_dram_bit[bank] ^= ( 1 <<block );
}
void flush_merge_buffer()
{
UINT32 new_row, new_psn;
UINT32 new_bank = g_target_bank;
int i;
if( g_target_sect != 0 ){
// get free page from target bank
new_row = get_free_page(new_bank);
// set registers to write a data to nand flash memory
SETREG(FCP_CMD, FC_COL_ROW_IN_PROG);
SETREG(FCP_OPTION, FO_P | FO_E | FO_B_W_DRDY);
// Address is merge buffer address which contains actual data
SETREG(FCP_DMA_ADDR, MERGE_BUFFER_ADDR + new_bank * BYTES_PER_PAGE);
SETREG(FCP_DMA_CNT, BYTES_PER_SECTOR * g_target_sect);
SETREG(FCP_COL,0);
SETREG(FCP_ROW_L(new_bank),new_row);
SETREG(FCP_ROW_H(new_bank),new_row);
flash_issue_cmd(new_bank,RETURN_ON_ISSUE);
// for lba -> psn mapping information
new_psn = new_bank * SECTORS_PER_BANK + new_row * SECTORS_PER_PAGE;
// Update mapping information
for(i = 0 ;i < g_target_sect; i++ )
{
set_psn( g_merge_buffer_lsn[i],
new_psn + i );
}
}
}
void nand_page_ptprogram_from_host(UINT32 const bank, UINT32 const vblock, UINT32 const page_num, UINT32 const sect_offset, UINT32 const num_sectors)
{
UINT32 row;
ASSERT(bank < NUM_BANKS);
ASSERT(vblock < VBLKS_PER_BANK);
ASSERT(page_num < PAGES_PER_BLK);
row = (vblock * PAGES_PER_BLK) + page_num;
SETREG(FCP_CMD, FC_COL_ROW_IN_PROG);
#if OPTION_FTL_TEST == TRUE
SETREG(FCP_OPTION, FO_P | FO_E | FO_B_W_DRDY);
#else
SETREG(FCP_OPTION, FO_P | FO_E | FO_B_SATA_W);
#endif
SETREG(FCP_DMA_ADDR, WR_BUF_PTR(g_ftl_write_buf_id));
SETREG(FCP_DMA_CNT, num_sectors * BYTES_PER_SECTOR);
SETREG(FCP_COL, sect_offset);
SETREG(FCP_ROW_L(bank), row);
SETREG(FCP_ROW_H(bank), row);
flash_issue_cmd(bank, RETURN_ON_ISSUE);
g_ftl_write_buf_id = (g_ftl_write_buf_id + 1) % NUM_WR_BUFFERS;
}
/* g_smt_target, g_smt_victim */
void load_smt_piece(UINT32 idx){
UINT32 bank,row,block;
UINT32 dest;
bank = idx / NUM_BANKS_MAX;
block = idx % NUM_BANKS_MAX;
row = g_misc_meta[bank].smt_pieces[block] * SMT_INC_SIZE + (PAGES_PER_VBLK * g_bad_list[bank][block]);
if( g_smt_target == NUM_BANKS_MAX || g_smt_full == 1){
g_smt_full = 1;
g_smt_victim = (g_smt_victim + 1 ) % NUM_BANKS_MAX;
flush_smt_piece(g_smt_victim);
g_smt_target = (g_smt_target + 1) % NUM_BANKS_MAX;
}
SETREG(FCP_CMD, FC_COL_ROW_READ_OUT);
SETREG(FCP_DMA_CNT,SMT_PIECE_BYTES);
SETREG(FCP_COL, 0);
dest = SMT_ADDR + (g_smt_target * SMT_PIECE_BYTES);
SETREG(FCP_DMA_ADDR, dest);
SETREG(FCP_OPTION, FO_P | FO_E );
SETREG(FCP_ROW_L(bank), row);
SETREG(FCP_ROW_H(bank), row);
flash_issue_cmd(bank, RETURN_WHEN_DONE);
smt_dram_map[g_smt_target] = idx;
smt_piece_map[idx] = g_smt_target;
smt_bit_map[bank] &= ~( 1 <<block );
if(( g_misc_meta[bank].smt_init & ( 1 << block ) ) == 0){
mem_set_dram( dest, 0x00, SMT_PIECE_BYTES);
g_misc_meta[bank].smt_init |= (1 <<block);
}
g_smt_target++;
}
void nand_page_read_to_host(UINT32 const bank, UINT32 const vblock, UINT32 const page_num)
{
#if PrintStats
uart_print_level_1("FR ");
uart_print_level_1_int(SECTORS_PER_PAGE);
uart_print_level_1("\r\n");
#endif
UINT32 row;
ASSERT(bank < NUM_BANKS);
ASSERT(vblock < VBLKS_PER_BANK);
ASSERT(page_num < PAGES_PER_BLK);
row = (vblock * PAGES_PER_BLK) + page_num;
uart_print("nand_page_read_to_host bank="); uart_print_int(bank);
uart_print(", vblock="); uart_print_int(vblock);
uart_print(", page="); uart_print_int(page_num); uart_print("\r\n");
uart_print("Reading row="); uart_print_int(row); uart_print("\r\n");
uart_print("read flash: bank="); uart_print_int(bank);
uart_print(", page="); uart_print_int(row); uart_print("\r\n");
SETREG(FCP_CMD, FC_COL_ROW_READ_OUT);
SETREG(FCP_DMA_ADDR, RD_BUF_PTR(g_ftl_read_buf_id));
SETREG(FCP_DMA_CNT, BYTES_PER_PAGE);
SETREG(FCP_COL, 0);
#if OPTION_FTL_TEST == TRUE
SETREG(FCP_OPTION, FO_P | FO_E);
#else
SETREG(FCP_OPTION, FO_P | FO_E | FO_B_SATA_R);
#endif
SETREG(FCP_ROW_L(bank), row);
SETREG(FCP_ROW_H(bank), row);
g_ftl_read_buf_id = (g_ftl_read_buf_id + 1) % NUM_RD_BUFFERS;
#if OPTION_FTL_TEST == FALSE
{
int count=0;
while (1) {
count ++;
if (count > 100000) {
uart_print_level_1("Warning1 in nand_page_read_to_host\r\n");
count=0;
}
UINT32 sata_id = GETREG(SATA_RBUF_PTR);
if (g_ftl_read_buf_id != sata_id)
break;
}
}
#endif
flash_issue_cmd(bank, RETURN_ON_ISSUE);
}
static void format(void)
{
// This function is called upon the very first power-up of the SSD.
// This function does the low-level format (i.e. FTL level format) of SSD.
// A typical FTL would create its mapping table and the list of free blocks.
// However, this example does nothing more than erasing all the free blocks.
//
// This function may take a long time to complete. For example, erasing all the flash blocks can
// take more than ten seconds depending on the total density.
// In that case, the host will declare time-out error. (no response from SSD for a long time)
// A suggested solution to this problem is:
// When you power-up the SSD for the first time, connect the power cable but not the SATA cable.
// At the end of this function, you can put a call to led(1) to indicate that the low level format
// has been completed. When the LED is on, turn off the power, connect the SATA cable, and turn on
// the power again.
UINT32 vblk_offset, bank;
for (vblk_offset = 1; vblk_offset < VBLKS_PER_BANK; vblk_offset++)
{
for (bank = 0; bank < NUM_BANKS; bank++)
{
if (is_bad_block(bank, vblk_offset))
continue;
// You do not need to set the values of FCP_DMA_ADDR, FCP_DMA_CNT and FCP_COL for FC_ERASE.
SETREG(FCP_CMD, FC_ERASE);
SETREG(FCP_BANK, REAL_BANK(bank));
SETREG(FCP_OPTION, FO_P);
SETREG(FCP_ROW_L(bank), vblk_offset * PAGES_PER_VBLK);
SETREG(FCP_ROW_H(bank), vblk_offset * PAGES_PER_VBLK);
// You should not issue a new command when Waiting Room is not empty.
while ((GETREG(WR_STAT) & 0x00000001) != 0);
// By writing any value to FCP_ISSUE, you put FC_ERASE into Waiting Room.
// The value written to FCP_ISSUE does not have any meaning.
SETREG(FCP_ISSUE, NULL);
}
}
// In general, write_format_mark() should be called upon completion of low level format in order to prevent
// format() from being called again.
// However, since the tutorial FTL does not support power off recovery,
// format() should be called every time.
init_meta_data();
ftl_flush();
write_format_mark();
led(1);
}
static BOOL32 check_format_mark(void)
{
// This function reads a flash page from (bank #0, block #0) in order to check whether the SSD is formatted or not.
#ifdef __GNUC__
extern UINT32 size_of_firmware_image;
UINT32 firmware_image_pages = (((UINT32) (&size_of_firmware_image)) + BYTES_PER_FW_PAGE - 1) / BYTES_PER_FW_PAGE;
#else
extern UINT32 Image$$ER_CODE$$RO$$Length;
extern UINT32 Image$$ER_RW$$RW$$Length;
UINT32 firmware_image_bytes = ((UINT32) &Image$$ER_CODE$$RO$$Length) + ((UINT32) &Image$$ER_RW$$RW$$Length);
UINT32 firmware_image_pages = (firmware_image_bytes + BYTES_PER_FW_PAGE - 1) / BYTES_PER_FW_PAGE;
#endif
UINT32 format_mark_page_offset = FW_PAGE_OFFSET + firmware_image_pages;
UINT32 temp;
flash_clear_irq(); // clear any flash interrupt flags that might have been set
SETREG(FCP_CMD, FC_COL_ROW_READ_OUT);
SETREG(FCP_BANK, REAL_BANK(0));
SETREG(FCP_OPTION, FO_E);
SETREG(FCP_DMA_ADDR, FTL_BUF_ADDR); // flash -> DRAM
SETREG(FCP_DMA_CNT, BYTES_PER_SECTOR);
SETREG(FCP_COL, 0);
SETREG(FCP_ROW_L(0), format_mark_page_offset);
SETREG(FCP_ROW_H(0), format_mark_page_offset);
// At this point, we do not have to check Waiting Room status before issuing a command,
// because scan list loading has been completed just before this function is called.
SETREG(FCP_ISSUE, NULL);
// wait for the FC_COL_ROW_READ_OUT command to be accepted by bank #0
while ((GETREG(WR_STAT) & 0x00000001) != 0);
// wait until bank #0 finishes the read operation
while (BSP_FSM(0) != BANK_IDLE);
// Now that the read operation is complete, we can check interrupt flags.
temp = BSP_INTR(0) & FIRQ_ALL_FF;
// clear interrupt flags
CLR_BSP_INTR(0, 0xFF);
if (temp != 0)
{
return FALSE; // the page contains all-0xFF (the format mark does not exist.)
}
else
{
return TRUE; // the page contains something other than 0xFF (it must be the format mark)
}
}
void nand_block_erase_sync(UINT32 const bank, UINT32 const vblock)
{
ASSERT(bank < NUM_BANKS);
ASSERT(vblock < VBLKS_PER_BANK);
SETREG(FCP_CMD, FC_ERASE);
SETREG(FCP_BANK, REAL_BANK(bank));
SETREG(FCP_OPTION, FO_P); // if OPTION_2_PLANE == 0, FO_P will be zero.
SETREG(FCP_ROW_H(bank), vblock * PAGES_PER_VBLK);
SETREG(FCP_ROW_L(bank), vblock * PAGES_PER_VBLK);
flash_issue_cmd(bank, RETURN_WHEN_DONE);
}
void flush_smt_piece(UINT32 idx)
{
UINT32 bank,row,block;
UINT32 dest;
UINT32 pblock, i ;
UINT32 new_row, new_block;
bank = smt_dram_map[idx] / SMT_BANK_NUM;
block = smt_dram_map[idx] % SMT_BANK_NUM;
pblock = block / SMT_BLOCK;
if((smt_bit_map[bank][block/NUM_BANKS_MAX] & (1<<(block%NUM_BANKS_MAX))) != 0){
//update and flash
if( g_misc_meta[bank].smt_row[pblock] >= SMT_LIMIT ){
// erase
for(i = 0; i < (SMT_BANK_NUM + SMT_BLOCK -1) / SMT_BLOCK; i++)
{
dest = bank * SMT_BANK_NUM + SMT_BLOCK * pblock + i;
new_row = smt_pos[dest];
nand_page_copyback(bank,g_bad_list[bank][pblock], new_row * SMT_INC_SIZE , g_bad_list[bank][SMT_BLOCK], i * SMT_INC_SIZE);
smt_pos[dest] = i;
}
g_misc_meta[bank].smt_row[pblock] = i;
row = i;
nand_block_erase(bank,g_bad_list[bank][pblock]);
new_block = g_bad_list[bank][pblock];
g_bad_list[bank][pblock] = g_bad_list[bank][SMT_BLOCK];
g_bad_list[bank][SMT_BLOCK] = new_block;
}
else{
row = g_misc_meta[bank].smt_row[pblock]++;
}
smt_pos[smt_dram_map[idx]] = row;
row = row * SMT_INC_SIZE + ( PAGES_PER_VBLK * g_bad_list[bank][pblock]);
// flash map data to nand
SETREG(FCP_CMD, FC_COL_ROW_IN_PROG);
SETREG(FCP_OPTION, FO_P | FO_E | FO_B_W_DRDY);
SETREG(FCP_COL,0);
SETREG(FCP_ROW_L(bank),row);
SETREG(FCP_ROW_H(bank),row);
dest = SMT_ADDR + (idx * SMT_PIECE_BYTES);
SETREG(FCP_DMA_ADDR,dest);
SETREG(FCP_DMA_CNT, SMT_PIECE_BYTES);
//flash_issue_cmd(bank,RETURN_WHEN_DONE);
flash_issue_cmd(bank,RETURN_ON_ISSUE);
g_bank_to_wait = bank;
}
smt_piece_map[smt_dram_map[idx]] = (UINT32)-1;
}
void nand_block_erase(UINT32 const bank, UINT32 const vblock)
{
ASSERT(bank < NUM_BANKS);
ASSERT(vblock < VBLKS_PER_BANK);
SETREG(FCP_CMD, FC_ERASE);
SETREG(FCP_BANK, REAL_BANK(bank));
SETREG(FCP_OPTION, FO_P); // if OPTION_2_PLANE == 0, FO_P will be zero.
SETREG(FCP_ROW_H(bank), vblock * PAGES_PER_VBLK);
SETREG(FCP_ROW_L(bank), vblock * PAGES_PER_VBLK);
flash_issue_cmd(bank, RETURN_ON_ISSUE);
/* uart_printf("erase block #: %d, %d", bank, vblock); */
}
void flush_smt_piece(UINT32 idx)
{
UINT32 bank,row,block;
UINT32 dest;
UINT32 pblock;
UINT32 i, old_block;
bank = smt_dram_map[idx] / SMT_NUM;
block = smt_dram_map[idx] % SMT_NUM;
pblock = block / ( NUM_BANKS_MAX *2 );
if((smt_bit_map[bank][block / NUM_BANKS_MAX] & (1<< (block % NUM_BANKS_MAX))) != 0){
// smt piece data
if( g_misc_meta[bank].smt_next_page[pblock] >= SMT_LIMIT - 1){
// erase
for(i = 0 ;i < 16 ;i++){
nand_page_copyback(bank,
g_bad_list[bank][pblock],
g_misc_meta[bank].smt_pieces[i * NUM_BANKS_MAX * 2 + pblock],
g_smt_free[bank],
i );
g_misc_meta[bank].smt_pieces[i * NUM_BANKS_MAX * 2 + pblock] = i;
}
nand_block_erase(bank,g_bad_list[bank][pblock]);
g_misc_meta[bank].smt_next_page[pblock] = 16;
old_block = g_bad_list[bank][pblock];
g_bad_list[bank][pblock] = g_smt_free[bank];
g_smt_free[bank] = old_block;
}
//update and flash
g_misc_meta[bank].smt_pieces[block] = g_misc_meta[bank].smt_next_page[pblock];
row = g_misc_meta[bank].smt_pieces[block] * SMT_INC_SIZE + ( PAGES_PER_VBLK * g_bad_list[bank][pblock]);
// flash map data to nand
SETREG(FCP_CMD, FC_COL_ROW_IN_PROG);
SETREG(FCP_OPTION, FO_P | FO_E | FO_B_W_DRDY);
SETREG(FCP_COL,0);
SETREG(FCP_ROW_L(bank),row);
SETREG(FCP_ROW_H(bank),row);
dest = SMT_ADDR + (idx * SMT_PIECE_BYTES);
SETREG(FCP_DMA_ADDR,dest);
//SETREG(FCP_DMA_CNT, SMT_PIECE_BYTES);
SETREG(FCP_DMA_CNT, BYTES_PER_PAGE);
flash_issue_cmd(bank,RETURN_WHEN_DONE);
g_misc_meta[bank].smt_next_page[pblock]++;
}
smt_piece_map[smt_dram_map[idx]] = (UINT32)-1;
}
void NANDController::getCommandInfo()
{
////////////////////////////////////////////////////////////////////
// Get command infomation
////////////////////////////////////////////////////////////////////
curFCPCommand.cmd = getRegister(FCP_CMD);
curFCPCommand.bank = getRegister(FCP_BANK);
curFCPCommand.option = getRegister(FCP_OPTION);
curFCPCommand.dma_addr = getRegister(FCP_DMA_ADDR);
curFCPCommand.dma_cnt = getRegister(FCP_DMA_CNT);
curFCPCommand.col = getRegister(FCP_COL);
curFCPCommand.row[curFCPCommand.bank][0] = getRegister(FCP_ROW_L(curFCPCommand.bank));
curFCPCommand.row[curFCPCommand.bank][1] = getRegister(FCP_ROW_H(curFCPCommand.bank));
if(curFCPCommand.row[curFCPCommand.bank][0] != curFCPCommand.row[curFCPCommand.bank][1]) {
printf( "Different row, ROW_L:%d, ROW_H:%d", curFCPCommand.row[curFCPCommand.bank][0], curFCPCommand.row[curFCPCommand.bank][1]);
}
curFCPCommand.dst_col = getRegister(FCP_DST_COL);
curFCPCommand.dst_row[0] = getRegister(FCP_DST_ROW_L);
curFCPCommand.dst_row[1] = getRegister(FCP_DST_ROW_H);
curFCPCommand.cmd_id = 0; //don't know
curFCPCommand.issue = ISSUE_ENABLE;
////////////////////////////////////////////////////////////////////
// Print log
////////////////////////////////////////////////////////////////////
printf( ">> FCP Command Receive------------------\n");
printf( "cmd:\t0x%x\n", curFCPCommand.cmd);
printf( "bank:\t0x%x\n", curFCPCommand.bank);
printf( "option:\t0x%x\n", curFCPCommand.option);
printf( "dma_addr:\t0x%x\n", curFCPCommand.dma_addr);
printf( "dma_cnt:\t0x%x\n", curFCPCommand.dma_cnt);
printf( "col:\t0x%x\n", curFCPCommand.col);
printf( "row_l:\t0x%x\n", curFCPCommand.row[curFCPCommand.bank][0]);
printf( "row_h:\t0x%x\n", curFCPCommand.row[curFCPCommand.bank][1]);
printf( "dst_col:\t0x%x\n", curFCPCommand.dst_col);
printf( "dst_row_l:\t0x%x\n", curFCPCommand.dst_row[0]);
printf( "dst_row_h:\t0x%x\n", curFCPCommand.dst_row[1]);
printf( "cmd_id:\t0x%x\n", curFCPCommand.cmd_id);
printf( "issue:\t0x%x\n", curFCPCommand.issue);
printf( "---------------------------------------\n");
}
void ftl_read_sector(UINT32 const lba, UINT32 const sect_offset) //added by GYUHWA
{
UINT32 psn, bank, row, buf_offset, nand_offset;
UINT32 t1;
UINT32 src,dst;
psn = get_psn(lba); //physical sector nomber
//bank = lba % NUM_BANKS;
bank = psn / SECTORS_PER_BANK;
t1 = psn % SECTORS_PER_BANK;
row = t1 / SECTORS_PER_PAGE;
nand_offset = t1 % SECTORS_PER_PAGE; //physical nand offset
if((psn & (UINT32)BIT31) != 0 ) //data is in merge buffer
{
buf_offset = (psn ^ (UINT32)BIT31);
//bank = g_target_bank;
bank = buf_offset / SECTORS_PER_PAGE;
buf_offset = buf_offset % SECTORS_PER_PAGE;
dst = RD_BUF_PTR(g_ftl_read_buf_id) + sect_offset * BYTES_PER_SECTOR;
src = MERGE_BUFFER_ADDR + bank * BYTES_PER_PAGE + BYTES_PER_SECTOR * buf_offset;
mem_copy(dst, src, BYTES_PER_SECTOR);
//find collect data -> mem_copy to RD_BUFFER
}
else if (psn != NULL) //data is in nand flash
{
SETREG(FCP_CMD, FC_COL_ROW_READ_OUT); //FCP command for read one sector
SETREG(FCP_DMA_CNT, BYTES_PER_SECTOR);
SETREG(FCP_COL, nand_offset);
SETREG(FCP_DMA_ADDR, RD_BUF_PTR(g_ftl_read_buf_id) + (BYTES_PER_SECTOR * (sect_offset - nand_offset)));
// nand_offset is COL, and RD_BUFFER_offset is COL. So we change DMA_ADDR to read data different sector offset.
SETREG(FCP_OPTION, FO_P | FO_E );
SETREG(FCP_ROW_L(bank), row);
SETREG(FCP_ROW_H(bank), row);// change bm_read_limit
flash_issue_cmd(bank, RETURN_ON_ISSUE);
//Because we don't increase BM_STACK_RD_LIMIT to collect sectors
}
else //data that never written
{
mem_set_dram(RD_BUF_PTR(g_ftl_read_buf_id) + row * BYTES_PER_SECTOR, 0xFFFFFFFF, BYTES_PER_SECTOR); //add 0xfffff to data that never written
}
}
/* g_smt_target, g_smt_victim */
void load_smt_piece(UINT32 idx){
UINT32 bank,row,block;
UINT32 dest;
UINT32 pblock; // physical block which have target mapping table
bank = idx / SMT_BANK_NUM;
block = idx % SMT_BANK_NUM;
pblock = block / SMT_BLOCK;
row = smt_pos[idx] * SMT_INC_SIZE + (PAGES_PER_VBLK * g_bad_list[bank][pblock]);
if( g_smt_full == 1){
flush_smt_piece(g_smt_victim);
g_smt_victim = (g_smt_victim +1 ) % SMT_DRAM;
}
SETREG(FCP_CMD, FC_COL_ROW_READ_OUT);
SETREG(FCP_DMA_CNT,SMT_PIECE_BYTES);
SETREG(FCP_COL, 0);
dest = SMT_ADDR + (g_smt_target * SMT_PIECE_BYTES);
SETREG(FCP_DMA_ADDR, dest);
SETREG(FCP_OPTION, FO_P | FO_E );
SETREG(FCP_ROW_L(bank), row);
SETREG(FCP_ROW_H(bank), row);
// fully guarantee
//flash_issue_cmd(bank, RETURN_WHEN_DONE);
while(_BSP_FSM(g_bank_to_wait) != BANK_IDLE);
flash_issue_cmd(bank, RETURN_ON_ISSUE);
g_bank_to_wait = bank;
smt_dram_map[g_smt_target] = idx;
smt_piece_map[idx] = g_smt_target;
smt_bit_map[bank][block/NUM_BANKS_MAX] &= ~( 1 <<(block % NUM_BANKS_MAX) );
/* init or not */
if(( g_misc_meta[bank].smt_init[block/NUM_BANKS_MAX] & ( 1 << (block % NUM_BANKS_MAX) ) ) == 0){
mem_set_dram( dest, 0x00, SMT_PIECE_BYTES);
g_misc_meta[bank].smt_init[block/NUM_BANKS_MAX] |= (1 <<(block % NUM_BANKS_MAX));
}
g_smt_target = (g_smt_target + 1) % SMT_DRAM;
if( g_smt_target == 0 ){
g_smt_full = 1;
}
}
void nand_page_ptprogram_from_host(UINT32 const bank, UINT32 const vblock, UINT32 const page_num, UINT32 const sect_offset, UINT32 const num_sectors)
{
#if PrintStats
uart_print_level_1("FP ");
uart_print_level_1_int(num_sectors);
uart_print_level_1("\r\n");
#endif
totSecWrites += num_sectors;
UINT32 row;
ASSERT(bank < NUM_BANKS);
ASSERT(vblock < VBLKS_PER_BANK);
ASSERT(page_num < PAGES_PER_BLK);
row = (vblock * PAGES_PER_BLK) + page_num;
uart_print("nand_page_ptprogram_from_host bank="); uart_print_int(bank);
uart_print(", vblock="); uart_print_int(vblock);
uart_print(", page="); uart_print_int(page_num);
uart_print(", sect_offset="); uart_print_int(sect_offset);
uart_print(", num_sectors="); uart_print_int(num_sectors); uart_print("\r\n");
uart_print("Writing row="); uart_print_int(row); uart_print("\r\n");
SETREG(FCP_CMD, FC_COL_ROW_IN_PROG);
#if OPTION_FTL_TEST == TRUE
SETREG(FCP_OPTION, FO_P | FO_E | FO_B_W_DRDY);
#else
SETREG(FCP_OPTION, FO_P | FO_E | FO_B_SATA_W);
#endif
SETREG(FCP_DMA_ADDR, WR_BUF_PTR(g_ftl_write_buf_id));
SETREG(FCP_DMA_CNT, num_sectors * BYTES_PER_SECTOR);
SETREG(FCP_COL, sect_offset);
SETREG(FCP_ROW_L(bank), row);
SETREG(FCP_ROW_H(bank), row);
//flash_issue_cmd(bank, RETURN_WHEN_DONE);
flash_issue_cmd(bank, RETURN_ON_ISSUE);
g_ftl_write_buf_id = (g_ftl_write_buf_id + 1) % NUM_WR_BUFFERS;
}
void nand_page_program(UINT32 const bank, UINT32 const vblock, UINT32 const page_num, UINT32 const buf_addr)
{
UINT32 row;
ASSERT(bank < NUM_BANKS);
ASSERT(vblock < VBLKS_PER_BANK);
ASSERT(page_num < PAGES_PER_BLK);
row = (vblock * PAGES_PER_BLK) + page_num;
SETREG(FCP_CMD, FC_COL_ROW_IN_PROG);
SETREG(FCP_OPTION, FO_P | FO_E | FO_B_W_DRDY);
SETREG(FCP_DMA_ADDR, buf_addr);
SETREG(FCP_DMA_CNT, BYTES_PER_PAGE);
SETREG(FCP_COL, 0);
SETREG(FCP_ROW_L(bank), row);
SETREG(FCP_ROW_H(bank), row);
flash_issue_cmd(bank, RETURN_ON_ISSUE);
}
// synchronous one full page read
void nand_page_read(UINT32 const bank, UINT32 const vblock, UINT32 const page_num, UINT32 const buf_addr)
{
UINT32 row;
ASSERT(bank < NUM_BANKS);
ASSERT(vblock < VBLKS_PER_BANK);
ASSERT(page_num < PAGES_PER_BLK);
// row means ppn
row = (vblock * PAGES_PER_BLK) + page_num;
SETREG(FCP_CMD, FC_COL_ROW_READ_OUT);
SETREG(FCP_OPTION, FO_P | FO_E);
SETREG(FCP_DMA_ADDR, buf_addr);
SETREG(FCP_DMA_CNT, BYTES_PER_PAGE);
SETREG(FCP_COL, 0);
SETREG(FCP_ROW_L(bank), row);
SETREG(FCP_ROW_H(bank), row);
flash_issue_cmd(bank, RETURN_WHEN_DONE);
}
void nand_page_ptprogram(UINT32 const bank, UINT32 const vblock, UINT32 const page_num, UINT32 const sect_offset, UINT32 const num_sectors, UINT32 const buf_addr)
{
UINT32 row;
/* uart_printf("ptprogram: bank %d vblock %d page_num %d sect_offset %d, num_sectors %d", bank, vblock, page_num, sect_offset, num_sectors); */
ASSERT(bank < NUM_BANKS);
ASSERT(vblock < VBLKS_PER_BANK);
ASSERT(page_num < PAGES_PER_BLK);
row = (vblock * PAGES_PER_BLK) + page_num;
SETREG(FCP_CMD, FC_COL_ROW_IN_PROG);
SETREG(FCP_OPTION, FO_P | FO_E | FO_B_W_DRDY);
SETREG(FCP_DMA_ADDR, buf_addr);
SETREG(FCP_DMA_CNT, num_sectors * BYTES_PER_SECTOR);
SETREG(FCP_COL, sect_offset);
SETREG(FCP_ROW_L(bank), row);
SETREG(FCP_ROW_H(bank), row);
flash_issue_cmd(bank, RETURN_ON_ISSUE);
}
void flush_merge_buffer()
{
UINT32 new_row, new_psn;
UINT32 new_bank;
int i, j;
for(i = 0 ;i < NUM_BANKS;i++){
// remain page on dram merge buffer
if( g_target_sect[i] != 0 ){
new_bank = i;
// get free page from target bank
// set registers to write a data to nand flash memory
SETREG(FCP_CMD, FC_COL_ROW_IN_PROG);
SETREG(FCP_OPTION, FO_P | FO_E | FO_B_W_DRDY);
// Address is merge buffer address which contains actual data
SETREG(FCP_DMA_ADDR, MERGE_BUFFER_ADDR + new_bank * BYTES_PER_PAGE);
SETREG(FCP_DMA_CNT, BYTES_PER_SECTOR * g_target_sect[i]);
SETREG(FCP_COL,0);
flash_issue_cmd(AUTO_SEL,RETURN_ON_ACCEPT);
g_prev_bank[i] = GETREG(WR_BANK);
new_row = get_free_page(g_prev_bank[i]);
SETREG(FCP_ROW_L(g_prev_bank[i]),new_row);
SETREG(FCP_ROW_H(g_prev_bank[i]),new_row);
// for lba -> psn mapping information
new_psn = g_prev_bank[i] * SECTORS_PER_BANK + g_target_row[g_prev_bank[i]] * SECTORS_PER_PAGE;
// Update mapping information
for(j = 0 ;j < g_target_sect[i]; i++ )
{
set_psn( g_merge_buffer_lsn[i][j],
new_psn + i );
}
g_target_row[g_prev_bank[i]] = new_row;
}
}
}
void nand_page_read_to_host(UINT32 const bank, UINT32 const vblock, UINT32 const page_num)
{
UINT32 row;
ASSERT(bank < NUM_BANKS);
ASSERT(vblock < VBLKS_PER_BANK);
ASSERT(page_num < PAGES_PER_BLK);
row = (vblock * PAGES_PER_BLK) + page_num;
SETREG(FCP_CMD, FC_COL_ROW_READ_OUT);
SETREG(FCP_DMA_ADDR, RD_BUF_PTR(g_ftl_read_buf_id));
SETREG(FCP_DMA_CNT, BYTES_PER_PAGE);
SETREG(FCP_COL, 0);
#if OPTION_FTL_TEST == TRUE
SETREG(FCP_OPTION, FO_P | FO_E);
#else
SETREG(FCP_OPTION, FO_P | FO_E | FO_B_SATA_R);
#endif
SETREG(FCP_ROW_L(bank), row);
SETREG(FCP_ROW_H(bank), row);
g_ftl_read_buf_id = (g_ftl_read_buf_id + 1) % NUM_RD_BUFFERS;
#if OPTION_FTL_TEST == FALSE
{
while (1)
{
UINT32 sata_id = GETREG(SATA_RBUF_PTR);
if (g_ftl_read_buf_id != sata_id)
break;
}
}
#endif
flash_issue_cmd(bank, RETURN_ON_ISSUE);
}
/* g_smt_target, g_smt_victim */
void load_smt_piece(UINT32 idx){
UINT32 bank,row,block;
UINT32 dest;
UINT32 pblock;
bank = idx / SMT_NUM;
block = idx % SMT_NUM;
pblock = block / (NUM_BANKS_MAX *2);
row = g_misc_meta[bank].smt_pieces[block] * SMT_INC_SIZE + (PAGES_PER_VBLK * g_bad_list[bank][pblock]);
if(g_smt_full == 1){
flush_smt_piece(g_smt_target);
g_smt_victim = (g_smt_victim +1 ) % SMT_NUM;
}
SETREG(FCP_CMD, FC_COL_ROW_READ_OUT);
SETREG(FCP_DMA_CNT,SMT_PIECE_BYTES);
SETREG(FCP_COL, 0);
dest = SMT_ADDR + (g_smt_target * SMT_PIECE_BYTES);
SETREG(FCP_DMA_ADDR, dest);
SETREG(FCP_OPTION, FO_P | FO_E );
SETREG(FCP_ROW_L(bank), row);
SETREG(FCP_ROW_H(bank), row);
// fully guarantee
flash_issue_cmd(bank, RETURN_WHEN_DONE);
smt_dram_map[g_smt_target] = idx;
smt_piece_map[idx] = g_smt_target;
smt_bit_map[bank][block/NUM_BANKS_MAX] &= ~( 1 << (block % NUM_BANKS_MAX) );
if(( g_misc_meta[bank].smt_init[block / NUM_BANKS_MAX ] & ( 1 << (block % NUM_BANKS_MAX)) ) == 0){
mem_set_dram( dest, 0x00, SMT_PIECE_BYTES);
g_misc_meta[bank].smt_init[block / NUM_BANKS_MAX] |= (1 << (block % NUM_BANKS_MAX));
}
g_smt_target++;
if( g_smt_target == SMT_NUM ){
g_smt_target = 0;
g_smt_full = 1;
}
}
// General purpose page read function
// synchronous page read (for reading metadata)
// asynchronous page read (left/right hole async read user data)
void nand_page_ptread(UINT32 const bank, UINT32 const vblock, UINT32 const page_num, UINT32 const sect_offset, UINT32 const num_sectors, UINT32 const buf_addr, UINT32 const issue_flag)
{
#if PrintStats
uart_print_level_1("FR ");
uart_print_level_1_int(num_sectors);
uart_print_level_1("\r\n");
#endif
UINT32 row;
ASSERT(bank < NUM_BANKS);
ASSERT(vblock < VBLKS_PER_BANK);
ASSERT(page_num < PAGES_PER_BLK);
// row means ppn
row = (vblock * PAGES_PER_BLK) + page_num;
uart_print("nand_page_ptread bank="); uart_print_int(bank);
uart_print(", vblock="); uart_print_int(vblock);
uart_print(", page="); uart_print_int(page_num);
uart_print(", sect_offset="); uart_print_int(sect_offset);
uart_print(", num_sectors="); uart_print_int(num_sectors);
uart_print(", dst_addr="); uart_print_int(buf_addr); uart_print("\r\n");
uart_print("Reading row="); uart_print_int(row); uart_print("\r\n");
SETREG(FCP_CMD, FC_COL_ROW_READ_OUT);
SETREG(FCP_OPTION, FO_P | FO_E);
SETREG(FCP_DMA_ADDR, buf_addr);
SETREG(FCP_DMA_CNT, num_sectors * BYTES_PER_SECTOR);
SETREG(FCP_COL, sect_offset);
SETREG(FCP_ROW_L(bank), row);
SETREG(FCP_ROW_H(bank), row);
// issue_flag:
// RETURN_ON_ISSUE, RETURN_WHEN_DONE, RETURN_ON_ACCEPT
flash_issue_cmd(bank, issue_flag);
}
static void write_format_mark(void)
{
// This function writes a format mark to a page at (bank #0, block #0).
#ifdef __GNUC__
extern UINT32 size_of_firmware_image;
UINT32 firmware_image_pages = (((UINT32) (&size_of_firmware_image)) + BYTES_PER_FW_PAGE - 1) / BYTES_PER_FW_PAGE;
#else
extern UINT32 Image$$ER_CODE$$RO$$Length;
extern UINT32 Image$$ER_RW$$RW$$Length;
UINT32 firmware_image_bytes = ((UINT32) &Image$$ER_CODE$$RO$$Length) + ((UINT32) &Image$$ER_RW$$RW$$Length);
UINT32 firmware_image_pages = (firmware_image_bytes + BYTES_PER_FW_PAGE - 1) / BYTES_PER_FW_PAGE;
#endif
UINT32 format_mark_page_offset = FW_PAGE_OFFSET + firmware_image_pages;
mem_set_dram(FTL_BUF_ADDR, 0, BYTES_PER_SECTOR);
SETREG(FCP_CMD, FC_COL_ROW_IN_PROG);
SETREG(FCP_BANK, REAL_BANK(0));
SETREG(FCP_OPTION, FO_E | FO_B_W_DRDY);
SETREG(FCP_DMA_ADDR, FTL_BUF_ADDR); // DRAM -> flash
SETREG(FCP_DMA_CNT, BYTES_PER_SECTOR);
SETREG(FCP_COL, 0);
SETREG(FCP_ROW_L(0), format_mark_page_offset);
SETREG(FCP_ROW_H(0), format_mark_page_offset);
// At this point, we do not have to check Waiting Room status before issuing a command,
// because we have waited for all the banks to become idle before returning from format().
SETREG(FCP_ISSUE, NULL);
// wait for the FC_COL_ROW_IN_PROG command to be accepted by bank #0
while ((GETREG(WR_STAT) & 0x00000001) != 0);
// wait until bank #0 finishes the write operation
while (BSP_FSM(0) != BANK_IDLE);
}
/* g_smt_target, g_smt_victim */
void load_smt_piece(UINT32 idx){
UINT32 bank,row,block;
bank = idx / NUM_BANKS_MAX;
block = idx % NUM_BANKS_MAX;
row = g_misc_meta[bank].smt_pieces[block] + (PAGES_PER_VBLK * g_bad_list[bank][block]);
if( g_smt_target == NUM_BANKS_MAX){
g_smt_target = 0;
flush_smt_piece(smt_dram_map[g_smt_victim]);
g_smt_victim = (g_smt_victim +1 ) % NUM_BANKS_MAX;
}
SETREG(FCP_CMD, FC_COL_ROW_READ_OUT);
SETREG(FCP_DMA_CNT,SMT_PIECE_BYTES);
SETREG(FCP_COL, 0);
SETREG(FCP_DMA_ADDR, SMT_ADDR + (g_smt_target * SMT_PIECE_BYTES));
SETREG(FCP_OPTION, FO_P | FO_E );
SETREG(FCP_ROW_L(bank), row);
SETREG(FCP_ROW_H(bank), row);
flash_issue_cmd(bank, RETURN_ON_ISSUE);
smt_dram_bit[bank] |= (1 << block);
smt_dram_map[g_smt_target] = idx;
smt_piece_map[idx] = g_smt_target;
smt_bit_map[bank] &= ~( 1 <<block );
g_smt_target++;
}
void ftl_write_sector(UINT32 const lba)
{
UINT32 new_bank, vsect_num, new_row;
UINT32 new_psn;
UINT32 temp;
UINT32 dst,src;
UINT32 index = lba % SECTORS_PER_PAGE;
int i;
//new_bank = lba % NUM_BANKS; // get bank number of sector
new_bank = g_target_bank;
temp = get_psn(lba);
if( (temp & (UINT32)BIT31) != 0 ){
// If data, which located in same lba, is already in dram
// copy sata host data to same merge buffer sector
vsect_num = (temp ^ (UINT32)BIT31);
dst = MERGE_BUFFER_ADDR + new_bank * BYTES_PER_PAGE + vsect_num * BYTES_PER_SECTOR;
src = WR_BUF_PTR(g_ftl_write_buf_id) + index * BYTES_PER_SECTOR;
mem_copy(dst,src, BYTES_PER_SECTOR);
}
else{
// copy sata host data to dram memory merge buffer page
//vsect_num = g_misc_meta[new_bank].g_merge_buff_sect;
vsect_num = g_target_sect;
dst = MERGE_BUFFER_ADDR + new_bank * BYTES_PER_PAGE + vsect_num * BYTES_PER_SECTOR;
src = WR_BUF_PTR(g_ftl_write_buf_id) + index * BYTES_PER_SECTOR;
mem_copy(dst, src, BYTES_PER_SECTOR);
// set psn to -1 , it means that data is in dram
set_psn(lba, ((UINT32)BIT31 | vsect_num ));
// for change psn
g_merge_buffer_lsn[vsect_num] = lba;
vsect_num++;
// If merge_buffer of bank is full ,
// than flush the merge buffer page to nand flash
// and set a psn number of all sectors.
if( vsect_num >= SECTORS_PER_PAGE ){
/* get free page */
new_row = get_free_page(new_bank);
SETREG(FCP_CMD, FC_COL_ROW_IN_PROG);
SETREG(FCP_OPTION, FO_P | FO_E | FO_B_W_DRDY);
SETREG(FCP_DMA_ADDR, MERGE_BUFFER_ADDR + new_bank * BYTES_PER_PAGE);
SETREG(FCP_DMA_CNT, BYTES_PER_PAGE);
SETREG(FCP_COL,0);
SETREG(FCP_ROW_L(new_bank),new_row);
SETREG(FCP_ROW_H(new_bank),new_row);
flash_issue_cmd(new_bank,RETURN_ON_ISSUE);
/* initialize merge buffer page's sector point */
// g_misc_meta[new_bank].g_merge_buff_sect = 0;
g_target_sect = 0;
g_target_bank = (g_target_bank + 1 ) % NUM_BANKS;
// allocate new psn
//new_psn = new_row * SECTORS_PER_PAGE;
new_psn = new_bank * SECTORS_PER_BANK + new_row * SECTORS_PER_PAGE;
// vsn - > psn mapping
for(i = 0 ;i < SECTORS_PER_PAGE; i++ )
{
set_psn( g_merge_buffer_lsn[i],
new_psn + i );
}
}
else
{
//g_misc_meta[new_bank].g_merge_buff_sect++;
g_target_sect++;
}
}
}
void ftl_open(void)
{
sanity_check();
// STEP 1 - read scan lists from NAND flash
scan_list_t* scan_list = (scan_list_t*) SCAN_LIST_ADDR;
UINT32 bank;
UINT32 bad_block, i , j ;
// Since we are going to check the flash interrupt flags within this function, ftl_isr() should not be called.
disable_irq();
flash_clear_irq(); // clear any flash interrupt flags that might have been set
for (bank = 0; bank < NUM_BANKS; bank++)
{
//g_misc_meta[bank].g_merge_buff_sect = 0;
SETREG(FCP_CMD, FC_COL_ROW_READ_OUT); // FC_COL_ROW_READ_OUT = sensing and data output
SETREG(FCP_OPTION, FO_E); // scan list was written in 1-plane mode by install.exe, so there is no FO_P
SETREG(FCP_DMA_ADDR, scan_list + bank); // target address should be DRAM or SRAM (see flash.h for rules)
SETREG(FCP_DMA_CNT, SCAN_LIST_SIZE); // number of bytes for data output
SETREG(FCP_COL, 0);
SETREG(FCP_ROW_L(bank), SCAN_LIST_PAGE_OFFSET); // scan list was written to this position by install.exe
SETREG(FCP_ROW_H(bank), SCAN_LIST_PAGE_OFFSET); // Tutorial FTL always uses the same row addresses for high chip and low chip
flash_issue_cmd(bank, RETURN_ON_ISSUE); // Take a look at the source code of flash_issue_cmd() now.
}
// This while() statement waits the last issued command to be accepted.
// If bit #0 of WR_STAT is one, a flash command is in the Waiting Room, because the target bank has not accepted it yet.
while ((GETREG(WR_STAT) & 0x00000001) != 0);
// Now, FC_COL_ROW_READ_OUT commands are accepted by all the banks.
// Before checking whether scan lists are corrupted or not, we have to wait the completion of read operations.
// This code shows how to wait for ALL the banks to become idle.
while (GETREG(MON_CHABANKIDLE) != 0);
// Now we can check the flash interrupt flags.
for (bank = 0; bank < NUM_BANKS; bank++)
{
UINT32 num_entries = NULL;
UINT32 result = OK;
if (BSP_INTR(bank) & FIRQ_DATA_CORRUPT)
{
// Too many bits are corrupted so that they cannot be corrected by ECC.
result = FAIL;
}
else
{
// Even though the scan list is not corrupt, we have to check whether its contents make sense.
UINT32 i;
num_entries = read_dram_16(&(scan_list[bank].num_entries));
if (num_entries > SCAN_LIST_ITEMS)
{
result = FAIL; // We cannot trust this scan list. Perhaps a software bug.
}
else
{
for (i = 0; i < num_entries; i++)
{
UINT16 entry = read_dram_16(&(scan_list[bank].list[i]));
UINT16 pblk_offset = entry & 0x7FFF;
if (pblk_offset == 0 || pblk_offset >= PBLKS_PER_BANK)
{
#if OPTION_REDUCED_CAPACITY == FALSE
result = FAIL; // We cannot trust this scan list. Perhaps a software bug.
#endif
}
else
{
// Bit position 15 of scan list entry is high-chip/low-chip flag.
// Remove the flag in order to make is_bad_block() simple.
write_dram_16(&(scan_list[bank].list[i]), pblk_offset);
}
}
}
}
if (result == FAIL)
{
mem_set_dram(scan_list + bank, 0, SCAN_LIST_SIZE);
g_misc_meta[bank].g_scan_list_entries = 0;
}
else
{
write_dram_16(&(scan_list[bank].num_entries), 0);
g_misc_meta[bank].g_scan_list_entries = num_entries;
}
}
// STEP 2 - If necessary, do low-level format
// format() should be called after loading scan lists, because format() calls is_bad_block().
init_meta_data();
// save non bad block list for metadata block
// block#0 : list, block#1 : misc meta
// block#2 ~ map table meta and data
for(i = 0 ;i < NUM_BANKS;i++){
bad_block = 2;
for(j = 0 ;j < NUM_BANKS_MAX;j++){
while(is_bad_block(i, bad_block) && j < VBLKS_PER_BANK)
{
bad_block++;
}
g_bad_list[i][j] = bad_block++;
}
g_free_start[i] = g_bad_list[i][NUM_BANKS_MAX-1] + 1;
}
//if (check_format_mark() == FALSE)
if( TRUE)
{
// When ftl_open() is called for the first time (i.e. the SSD is powered up the first time)
// format() is called.
format();
}
else{
loading_misc_meta();
}
//*Red//
// STEP 3 - initialize sector mapping table pieces
// The page mapping table is too large to fit in SRAM and DRAM.
// gyuhwa
// init_metadata();
// STEP 4 - initialize global variables that belong to FTL
g_ftl_read_buf_id = 0;
g_ftl_write_buf_id = 0;
for (bank = 0; bank < NUM_BANKS; bank++)
{
g_misc_meta[bank].g_target_row = PAGES_PER_VBLK * (g_free_start[bank]);
}
flash_clear_irq();
// This example FTL can handle runtime bad block interrupts and read fail (uncorrectable bit errors) interrupts
SETREG(INTR_MASK, FIRQ_DATA_CORRUPT | FIRQ_BADBLK_L | FIRQ_BADBLK_H);
SETREG(FCONF_PAUSE, FIRQ_DATA_CORRUPT | FIRQ_BADBLK_L | FIRQ_BADBLK_H);
enable_irq();
}
