Simply use an EF reversing ring of the correct size for the Minolta's filter threads.
Mount the reversing ring on the filter threads, then on the camera body.
Focus by changing the camera-subject distance (focus will be around 2 inches from the flange of the lens).
Aperture may be controllable via the ring on the lens but this varies widely on the mount of the reversed lens you may have to settle for the lenses default value.