drm/amd/display: Set hvm_enabled flag for S/G mode

[ Upstream commit 40e9f3f067bc6fb47b878f8ba0a9cc7b93abbf49 ]

[Why]
After enabling S/G on dcn314 a screen corruption may be observed.
HostVM flag should be set in S/G mode to be included in DML calculations.

[How]
In S/G mode gpu_vm_support flag is set.
Use its value to init is_hvm_enabled.

Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Alan Liu <HaoPing.Liu@amd.com>
Signed-off-by: Roman Li <roman.li@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 25ffc51ae6fa754efc518fda988fad4cff8181ab..050e7a52c8f62b26ad454a27e0a0636875fc5c5e 100644 (file)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -1240,7 +1240,7 @@ static void mmhub_read_system_context(struct amdgpu_device *adev, struct dc_phy_
        pa_config->gart_config.page_table_end_addr = page_table_end.quad_part << 12;
        pa_config->gart_config.page_table_base_addr = page_table_base.quad_part;
 
-       pa_config->is_hvm_enabled = 0;
+       pa_config->is_hvm_enabled = adev->mode_info.gpu_vm_support;
 
 }