From 113d524ec8f203cfe7673fc719b969c20ef49039 Mon Sep 17 00:00:00 2001
From: Michael Strauss <michael.strauss@amd.com>
Date: Wed, 16 Feb 2022 17:01:18 -0500
Subject: drm/amd/display: Pass HostVM enable flag into DCN3.1 DML
Git-commit: 863fa85e6a01c8b239009825dd9de1f64d7d020a
Patch-mainline: v5.18-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225
[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@amd.com>
Acked-by: Alan Liu <HaoPing.Liu@amd.com>
Signed-off-by: Michael Strauss <michael.strauss@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
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;
--
2.38.1