Method Send

cpp/controllers/scsi_controller.cpp:429–503

}

void ScsiController::Send()
{
	assert(!GetBus().GetREQ());
	assert(GetBus().GetIO());

	if (HasValidLength()) {
		LogTrace("Sending data, offset: " + to_string(GetOffset()) + ", length: " + to_string(GetLength()));

		// The delay should be taken from the respective LUN, but as there are no Daynaport drivers for
		// LUNs other than 0 this work-around works.
		if (const int len = GetBus().SendHandShake(GetBuffer().data() + GetOffset(), GetLength(),
				HasDeviceForLun(0) ? GetDeviceForLun(0)->GetSendDelay() : 0);
			len != static_cast<int>(GetLength())) {
			// If you cannot send all, move to status phase
			Error(sense_key::aborted_command);
			return;
		}

		UpdateOffsetAndLength();

		return;
	}

	DecrementBlocks();

	// Processing after data collection (read/data-in only)
	if (IsDataIn() && HasBlocks()) {
		// set next buffer (set offset, length)
		if (!XferIn(GetBuffer())) {
			// If result FALSE, move to status phase
			Error(sense_key::aborted_command);
			return;
		}

		LogTrace("Processing after data collection");
	}

	// Continue sending if blocks != 0
	if (HasBlocks()) {
		LogTrace("Continuing to send");
		assert(HasValidLength());
		assert(GetOffset() == 0);
		return;
	}

	// Move to next phase
	LogTrace("All data transferred, moving to next phase: " + string(BUS::GetPhaseStrRaw(GetPhase())));
	switch (GetPhase()) {
		case phase_t::msgin:
			// Completed sending response to extended message of IDENTIFY message
			if (scsi.atnmsg) {
				scsi.atnmsg = false;

				Command();
			} else {
				BusFree();
			}
			break;