• Ben Gamari's avatar
    drm/i915: Implement batch and ring buffer dumping · 6911a9b8
    Ben Gamari authored
    We create a debugfs node (i915_ringbuffer_data) to expose a hex dump
    of the ring buffer itself.  We also expose another debugfs node
    (i915_ringbuffer_info) with information on the state (i.e. head, tail
    addresses) of the ringbuffer.
    
    For batchbuffer dumping, we look at the device's active_list, dumping
    each object which has I915_GEM_DOMAIN_COMMAND in its read
    domains. This is all exposed through the dri/i915_batchbuffers debugfs
    file with a header for each object (giving the objects gtt_offset so
    that it can be matched against the offset given in the
    BATCH_BUFFER_START command.
    Signed-off-by: default avatarBen Gamari <bgamari@gmail.com>
    Signed-off-by: default avatarCarl Worth <cworth@cworth.org>
    Signed-off-by: default avatarEric Anholt <eric@anholt.net>
    6911a9b8
i915_gem_debugfs.c 10.3 KB