Jerome Glisse cafe6609d6
drm/radeon/kms: Schedule host path read cache flush through the ring V2 ...
R300 family will hard lockup if host path read cache flush is
done through MMIO to HOST_PATH_CNTL. But scheduling same flush
through ring seems harmless. This patch remove the hdp_flush
callback and add a flush after each fence emission which means
a flush after each IB schedule. Thus we should have same behavior
without the hard lockup.
Tested on R100,R200,R300,R400,R500,R600,R700 family.
V2: Adjust fence counts in r600_blit_prepare_copy()
Signed-off-by: Jerome Glisse <jglisse@redhat.com >
Reviewed-by: Alex Deucher <alexdeucher@gmail.com >
Signed-off-by: Dave Airlie <airlied@redhat.com >
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