static void ssd_media_access_request_element (ioreq_event *curr)
{
ssd_t *currdisk = getssd(curr->devno);
int blkno = curr->blkno;
int count = curr->bcount;
/* **** CAREFUL ... HIJACKING tempint2 and tempptr2 fields here **** */
curr->tempint2 = count;
while (count != 0) {
// find the element (package) to direct the request
int elem_num = currdisk->timing_t->choose_element(currdisk->timing_t, blkno);
ssd_element *elem = &currdisk->elements[elem_num];
// create a new sub-request for the element
ioreq_event *tmp = (ioreq_event *)getfromextraq();
tmp->devno = curr->devno;
tmp->busno = curr->busno;
tmp->flags = curr->flags;
tmp->blkno = blkno;
tmp->bcount = ssd_choose_aligned_count(currdisk->params.page_size, blkno, count);
ASSERT(tmp->bcount == currdisk->params.page_size);
tmp->tempptr2 = curr;
blkno += tmp->bcount;
count -= tmp->bcount;
elem->metadata.reqs_waiting ++;
// add the request to the corresponding element's queue
ioqueue_add_new_request(elem->queue, (ioreq_event *)tmp);
ssd_activate_elem(currdisk, elem_num);
}
}
static void ssd_media_access_request_element (ioreq_event *curr)
{
ssd_t *currdisk = getssd(curr->devno);
int blkno = curr->blkno;
int count = curr->bcount;
//added by tiel
int i = 0;
double max_threshold = currdisk->params.nelements * currdisk->params.page_size;
/* **** CAREFUL ... HIJACKING tempint2 and tempptr2 fields here **** */
curr->tempint2 = count;
//while (count != 0) {
while (count > 0) {
// find the element (package) to direct the request
int elem_num = ssd_choose_element(currdisk->user_params, blkno);
ssd_element *elem = &currdisk->elements[elem_num];
// create a new sub-request for the element
ioreq_event *tmp = (ioreq_event *)getfromextraq();
tmp->devno = curr->devno;
tmp->busno = curr->busno;
tmp->flags = curr->flags;
tmp->blkno = blkno;
tmp->bcount = ssd_choose_aligned_count(currdisk->params.page_size, blkno, count);
/*if(curr->bcount > max_threshold)
tmp->tempint1 = 1;*/
//ASSERT(tmp->bcount == currdisk->params.page_size);
tmp->tempptr2 = curr;
blkno += tmp->bcount;
count -= tmp->bcount;
elem->metadata.reqs_waiting ++;
// add the request to the corresponding element's queue
ioqueue_add_new_request(elem->queue, (ioreq_event *)tmp);
// added by tiel
// activate request create simtime, type, elem_num
{
int ch_num;
double wtime, ctime;
ioreq_event *temp = (ioreq_event *)getfromextraq();
temp->type = SSD_ACTIVATE_ELEM;
//Insert Channel/Way delay
//Channel Number = Chip number % Number of Channel
ch_num = elem_num % currdisk->params.nchannel;
wtime = currdisk->CH[ch_num].arrival_time + ssd_data_transfer_cost(currdisk,currdisk->params.page_size);
ctime = simtime + (i * currdisk->params.channel_switch_delay);
if(currdisk->params.nchannel == currdisk->params.nelements){
temp->time = ctime;
currdisk->CH[ch_num].ccount++;
}else if(simtime > wtime || currdisk->CH[ch_num].flag == -1){
//channel data setting
currdisk->CH[ch_num].arrival_time = ctime;
currdisk->CH[ch_num].flag = curr->flags;
temp->time = ctime;
currdisk->CH[ch_num].ccount++;
}else if(currdisk->CH[ch_num].flag ==READ){
if(wtime > ctime){
if(curr->flags == READ){
temp->time = wtime;
}else{
temp->time = wtime + currdisk->params.page_read_latency;
}
currdisk->CH[ch_num].wcount++;
}else{
temp->time = ctime;
currdisk->CH[ch_num].ccount++;
}
currdisk->CH[ch_num].arrival_time = temp->time;
currdisk->CH[ch_num].flag = curr->flags;
}else if(currdisk->CH[ch_num].flag == WRITE){
if(wtime > ctime){
temp->time = wtime;
currdisk->CH[ch_num].wcount++;
}else{
temp->time = ctime;
currdisk->CH[ch_num].ccount++;
}
currdisk->CH[ch_num].arrival_time = temp->time;
currdisk->CH[ch_num].flag = curr->flags;
}
temp->ssd_elem_num = elem_num;
addtointq ((event *)temp);
i ++;
}
}
}
