[PATCH 07/14] drm/amd/display: Pass HostVM enable flag into DCN3.1 DML

Alan Liu HaoPing.Liu at amd.com
Sat Feb 26 23:41:10 UTC 2022


From: Michael Strauss <michael.strauss at amd.com>

[WHY]
Calculations differ with HostVM enabled/disabled, causing underflow in
configs with high refresh displays + scaling due to lower available BW

[HOW]
Check riommu_active in order to pass correct HostVM enablement to DML

Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas at amd.com>
Acked-by: Alan Liu <HaoPing.Liu at amd.com>
Signed-off-by: Michael Strauss <michael.strauss at amd.com>
---
 drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c
index 28cd4f82529e..2ecd7bbfa0d4 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c
@@ -1810,6 +1810,7 @@ int dcn31_populate_dml_pipes_from_context(
 		pipes[pipe_cnt].pipe.src.immediate_flip = true;
 
 		pipes[pipe_cnt].pipe.src.unbounded_req_mode = false;
+		pipes[pipe_cnt].pipe.src.hostvm = dc->res_pool->hubbub->riommu_active;
 		pipes[pipe_cnt].pipe.src.gpuvm = true;
 		pipes[pipe_cnt].pipe.src.dcc_fraction_of_zs_req_luma = 0;
 		pipes[pipe_cnt].pipe.src.dcc_fraction_of_zs_req_chroma = 0;
-- 
2.25.1



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