/*
* calculates the cost of reading and writing a block of data across planes.
*/
static double ssd_crossover_cost
(ssd_t *s, ssd_element_metadata *metadata, int from_blk, int to_blk)
{
if (ssd_same_plane_blocks(s, metadata, from_blk, to_blk)) {
return 0;
} else {
double xfer_cost;
// we need to read and write back across the pins
xfer_cost = ssd_data_transfer_cost(s, s->params.page_size);
return (2 * xfer_cost);
}
}
/*
* calculates the cost of reading and writing a block of data across planes.
*/
static double ssd_crossover_cost
(ssd_t *s, ssd_element_metadata *metadata, ssd_power_element_stat *power_stat, int from_blk, int to_blk)
{
if (ssd_same_plane_blocks(s, metadata, from_blk, to_blk)) {
return 0;
} else {
double xfer_cost;
// we need to read and write back across the pins
xfer_cost = ssd_data_transfer_cost(s, s->params.page_size);
ssd_power_flash_calculate(SSD_POWER_FLASH_BUS_DATA_TRANSFER, 2*xfer_cost, power_stat, s);
return (2 * xfer_cost);
}
}