As Bernard says, sounds like you cooked it. Odd the smoke should come out the exhaust as well though, fingers crossed its not done the headgasket at the same time.
Other possibility is it popped the exhaust side oil seal on the turbo, but that doesn't explain the smoke from the front, unless you have an exhaust leak..?
Other possibility is it popped the exhaust side oil seal on the turbo, but that doesn't explain the smoke from the front, unless you have an exhaust leak..?