static void ssd_reconnect_done (ioreq_event *curr) { ssd_t *currdisk; // fprintf (outputfile, "Entering ssd_reconnect_done for disk %d: %12.6f\n", curr->devno, simtime); currdisk = getssd (curr->devno); ssd_assert_current_activity(currdisk, curr); if (curr->flags & READ) { if (currdisk->neverdisconnect) { /* Just holding on to bus; data transfer will be initiated when */ /* media access is complete. */ addtoextraq((event *) curr); ssd_check_channel_activity (currdisk); } else { /* data transfer: curr->bcount, which is still set to original */ /* requested value, indicates how many blks to transfer. */ curr->type = DEVICE_DATA_TRANSFER_COMPLETE; ssd_send_event_up_path(curr, (double) 0.0); } } else { if (currdisk->reconnect_reason == DEVICE_ACCESS_COMPLETE) { ssd_request_complete (curr); } else { /* data transfer: curr->bcount, which is still set to original */ /* requested value, indicates how many blks to transfer. */ curr->type = DEVICE_DATA_TRANSFER_COMPLETE; ssd_send_event_up_path(curr, (double) 0.0); } } }
static void ssd_check_channel_activity (ssd_t *currdisk) { while (1) { ioreq_event *curr = currdisk->completion_queue; currdisk->channel_activity = curr; if (curr != NULL) { currdisk->completion_queue = curr->next; if (curr->flags & READ) { /* transfer data up the line: curr->bcount, which is still set to */ /* original requested value, indicates how many blks to transfer. */ curr->type = DEVICE_DATA_TRANSFER_COMPLETE; ssd_send_event_up_path(curr, (double) 0.0); } else { ssd_request_complete (curr); } } else { curr = ioqueue_get_next_request(currdisk->queue); currdisk->channel_activity = curr; if (curr != NULL) { if (curr->flags & READ) { ssd_media_access_request(curr); continue; } else { curr->cause = RECONNECT; curr->type = IO_INTERRUPT_ARRIVE; currdisk->reconnect_reason = IO_INTERRUPT_ARRIVE; ssd_send_event_up_path (curr, currdisk->bus_transaction_latency); } } } break; } }
static void ssd_bustransfer_complete (ioreq_event *curr) { // fprintf (outputfile, "Entering ssd_bustransfer_complete for disk %d: %12.6f\n", curr->devno, simtime); if (curr->flags & READ) { ssd_request_complete (curr); } else { ssd_t *currdisk = getssd (curr->devno); ssd_assert_current_activity(currdisk, curr); ssd_media_access_request (curr); ssd_check_channel_activity (currdisk); } }
static void ssd_bustransfer_complete (ioreq_event *curr) { // fprintf (outputfile, "Entering ssd_bustransfer_complete for disk %d: %12.6f\n", curr->devno, simtime); if (curr->flags & READ) { ssd_request_complete (curr); } else { ssd_t *currdisk = getssd (curr->devno); ssd_assert_current_activity(currdisk, curr); if (currdisk->neverdisconnect == FALSE) { /* disconnect from bus */ ioreq_event *tmp = ioreq_copy (curr); tmp->type = IO_INTERRUPT_ARRIVE; tmp->cause = DISCONNECT; ssd_send_event_up_path (tmp, currdisk->bus_transaction_latency); ssd_media_access_request (curr); } else { ssd_media_access_request (curr); ssd_check_channel_activity (currdisk); } } }