These functions aren't bound at all yet:
cairo_copy_clip_rectangle_list
cairo_font_options_copy
cairo_font_options_create
cairo_font_options_equal
cairo_font_options_get_antialias
cairo_font_options_get_hint_metrics
cairo_font_options_get_hint_style
cairo_font_options_get_subpixel_order
cairo_font_options_hash
cairo_font_options_merge
cairo_font_options_set_antialias
cairo_font_options_set_hint_metrics
cairo_font_options_set_hint_style
cairo_font_options_set_subpixel_order
cairo_format_stride_for_width
cairo_ft_font_face_create_for_ft_face
cairo_ft_font_face_create_for_pattern
cairo_ft_font_options_substitute
cairo_get_font_options
cairo_get_scaled_font
cairo_image_surface_create_for_data
cairo_image_surface_get_data
cairo_image_surface_get_stride
cairo_ps_surface_dsc_begin_page_setup
cairo_ps_surface_dsc_begin_setup
cairo_ps_surface_dsc_comment
cairo_ps_surface_restrict_to_level
cairo_scaled_font_create
cairo_scaled_font_extents
cairo_scaled_font_get_ctm
cairo_scaled_font_get_font_face
cairo_scaled_font_get_font_matrix
cairo_scaled_font_get_font_options
cairo_scaled_font_get_type
cairo_scaled_font_glyph_extents
cairo_scaled_font_text_extents
cairo_set_font_face
cairo_set_font_options
cairo_set_scaled_font
cairo_surface_get_font_options
cairo_surface_mark_dirty
cairo_surface_mark_dirty_rectangle
cairo_svg_surface_restrict_to_version

Interact with bindings for:
Gtk+
FontConfig
FreeType
Pango
Win32 font API

Surface types not supported:
Win32
Quartz
XLib
