This week at XDC2013 NVIDIA made one of the biggest surprise announcements... NVIDIA will begin publishing NDA-free GPU programming documentation. They already have released some documentation and more is on the way as they seek to assist the Nouveau graphics driver developers in writing a full open-source 3D Linux graphics driver for GeForce GPUs.
Andy Ritger on the behalf of NVIDIA published the Device Control Block specification on Monday for the NVIDIA VBIOS that describes the board topology and display connector information. He also says NVIDIA is committed to releasing more information and will be monitoring the Nouveau mailing list along with setting up a NVIDIA.com email address that open-source developers can use in seeking more information.
More details on the open-source NVIDIA GPU documentation offer can be found via the Nouveau mailing list