int drm_agp_bind (struct inode * inode, struct file * filp, unsigned int cmd, unsigned long arg);
\param inode device inode. \param filp file pointer. \param cmd command. \param arg pointer to a drm_agp_binding structure. \return zero on success or a negative number on failure.
Verifies the AGP device is present and has been acquired and that no memory is currently bound into the GATT. Looks-up the AGP memory entry and passes it to bind_agp function.