int COPY_VALID_PAGES(int32_t old_pbn, int32_t new_pbn)
{
int i;
int copy_page_nb = 0;
unsigned int old_flash_nb = CALC_FLASH(old_pbn);
unsigned int old_block_nb = CALC_BLOCK(old_pbn);
unsigned int new_flash_nb = CALC_FLASH(new_pbn);
unsigned int new_block_nb = CALC_BLOCK(new_pbn);;
block_state_entry* old_b_s_entry = GET_BLOCK_STATE_ENTRY(old_pbn);
char* valid_array = old_b_s_entry->valid_array;
for(i=0;i<PAGE_NB;i++){
if(valid_array[i] == 'V'){
SSD_PAGE_READ(old_flash_nb, old_block_nb, i, -1, GC_READ, -1);
SSD_PAGE_WRITE(new_flash_nb, new_block_nb, i, -1, GC_WRITE, -1);
UPDATE_BLOCK_STATE_ENTRY(new_pbn, i, VALID);
UPDATE_BLOCK_STATE_ENTRY(old_pbn, i, INVALID);
copy_page_nb++;
}
}
return copy_page_nb;
}
int UPDATE_NEW_PAGE_MAPPING(int32_t lpn, int32_t ppn)
{
/* Update Page Mapping Table */
#ifdef FTL_MAP_CACHE
CACHE_UPDATE_PPN(lpn, ppn);
#else
mapping_table[lpn] = ppn;
#endif
/* Update Inverse Page Mapping Table */
UPDATE_BLOCK_STATE_ENTRY(CALC_FLASH(ppn), CALC_BLOCK(ppn), CALC_PAGE(ppn), VALID);
UPDATE_BLOCK_STATE(CALC_FLASH(ppn), CALC_BLOCK(ppn), DATA_BLOCK);
UPDATE_INVERSE_MAPPING(ppn, lpn);
return SUCCESS;
}
int UPDATE_NEW_PAGE_MAPPING(IDEState *s, int32_t lpn, int32_t ppn)
{
SSDState *ssd = &(s->ssd);
/* Update Page Mapping Table */
#ifdef FTL_MAP_CACHE
CACHE_UPDATE_PPN(s, lpn, ppn);
#else
ssd->mapping_table[lpn] = ppn;
#endif
/* Update Inverse Page Mapping Table */
UPDATE_BLOCK_STATE_ENTRY(s, CALC_FLASH(s, ppn), CALC_BLOCK(s, ppn),
CALC_PAGE(s, ppn), VALID);
UPDATE_BLOCK_STATE(s, CALC_FLASH(s, ppn), CALC_BLOCK(s, ppn), DATA_BLOCK);
UPDATE_INVERSE_MAPPING(s, ppn, lpn);
return SUCCESS;
}
int UPDATE_OLD_PAGE_MAPPING(int32_t lpn)
{
int32_t old_ppn;
#ifdef FTL_MAP_CACHE
old_ppn = CACHE_GET_PPN(lpn);
#else
old_ppn = GET_MAPPING_INFO(lpn);
#endif
if(old_ppn == -1){
#ifdef FTL_DEBUG
printf("[%s] New page \n", __FUNCTION__);
#endif
return SUCCESS;
}
else{
UPDATE_BLOCK_STATE_ENTRY(CALC_FLASH(old_ppn), CALC_BLOCK(old_ppn), CALC_PAGE(old_ppn), INVALID);
UPDATE_INVERSE_MAPPING(old_ppn, -1);
}
return SUCCESS;
}
