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drm/amd/display: Fix green screen issue after suspend 

[why]
We have seen a green screen after resume from suspend in a Raven system
connected with two displays (HDMI and DP) on X based system. We noticed
that this issue is related to bad DCC metadata from user space which may
generate hangs and consequently an underflow on HUBP. After taking a
deep look at the code path we realized that after resume we try to
restore the commit with the DCC enabled framebuffer but the framebuffer
is no longer valid.

[how]
This problem was only reported on Raven based system and after suspend,
for this reason, this commit adds a new parameter on
fill_plane_dcc_attributes() to give the option of disabling DCC
programmatically. In summary, for disabling DCC we first verify if is a
Raven system and if it is in suspend; if both conditions are true we
disable DCC temporarily, otherwise, it is enabled.

Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1099
Co-developed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
alistair/sensors
Rodrigo Siqueira 2020-04-22 17:43:26 -04:00 committed by Alex Deucher
parent 718a5569b6
commit 87b7ebc2e1
1 changed files with 29 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

38
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
View File

@ -3340,7 +3340,8 @@ fill_plane_dcc_attributes(struct amdgpu_device *adev,
const union dc_tiling_info *tiling_info,
const uint64_t info,
struct dc_plane_dcc_param *dcc,
struct dc_plane_address *address)
struct dc_plane_address *address,
bool force_disable_dcc)
{
struct dc *dc = adev->dm.dc;
struct dc_dcc_surface_param input;
@ -3352,6 +3353,9 @@ fill_plane_dcc_attributes(struct amdgpu_device *adev,
memset(&input, 0, sizeof(input));
memset(&output, 0, sizeof(output));
if (force_disable_dcc)
return 0;
if (!offset)
return 0;
@ -3401,7 +3405,8 @@ fill_plane_buffer_attributes(struct amdgpu_device *adev,
union dc_tiling_info *tiling_info,
struct plane_size *plane_size,
struct dc_plane_dcc_param *dcc,
struct dc_plane_address *address)
struct dc_plane_address *address,
bool force_disable_dcc)
{
const struct drm_framebuffer *fb = &afb->base;
int ret;
@ -3507,7 +3512,8 @@ fill_plane_buffer_attributes(struct amdgpu_device *adev,
ret = fill_plane_dcc_attributes(adev, afb, format, rotation,
plane_size, tiling_info,
tiling_flags, dcc, address);
tiling_flags, dcc, address,
force_disable_dcc);
if (ret)
return ret;
}
@ -3599,7 +3605,8 @@ fill_dc_plane_info_and_addr(struct amdgpu_device *adev,
const struct drm_plane_state *plane_state,
const uint64_t tiling_flags,
struct dc_plane_info *plane_info,
struct dc_plane_address *address)
struct dc_plane_address *address,
bool force_disable_dcc)
{
const struct drm_framebuffer *fb = plane_state->fb;
const struct amdgpu_framebuffer *afb =
@ -3681,7 +3688,8 @@ fill_dc_plane_info_and_addr(struct amdgpu_device *adev,
plane_info->rotation, tiling_flags,
&plane_info->tiling_info,
&plane_info->plane_size,
&plane_info->dcc, address);
&plane_info->dcc, address,
force_disable_dcc);
if (ret)
return ret;
@ -3704,6 +3712,7 @@ static int fill_dc_plane_attributes(struct amdgpu_device *adev,
struct dc_plane_info plane_info;
uint64_t tiling_flags;
int ret;
bool force_disable_dcc = false;
ret = fill_dc_scaling_info(plane_state, &scaling_info);
if (ret)
@ -3718,9 +3727,11 @@ static int fill_dc_plane_attributes(struct amdgpu_device *adev,
if (ret)
return ret;
force_disable_dcc = adev->asic_type == CHIP_RAVEN && adev->in_suspend;
ret = fill_dc_plane_info_and_addr(adev, plane_state, tiling_flags,
&plane_info,
&dc_plane_state->address);
&dc_plane_state->address,
force_disable_dcc);
if (ret)
return ret;
@ -5342,6 +5353,7 @@ static int dm_plane_helper_prepare_fb(struct drm_plane *plane,
uint64_t tiling_flags;
uint32_t domain;
int r;
bool force_disable_dcc = false;
dm_plane_state_old = to_dm_plane_state(plane->state);
dm_plane_state_new = to_dm_plane_state(new_state);
@ -5400,11 +5412,13 @@ static int dm_plane_helper_prepare_fb(struct drm_plane *plane,
dm_plane_state_old->dc_state != dm_plane_state_new->dc_state) {
struct dc_plane_state *plane_state = dm_plane_state_new->dc_state;
force_disable_dcc = adev->asic_type == CHIP_RAVEN && adev->in_suspend;
fill_plane_buffer_attributes(
adev, afb, plane_state->format, plane_state->rotation,
tiling_flags, &plane_state->tiling_info,
&plane_state->plane_size, &plane_state->dcc,
&plane_state->address);
&plane_state->address,
force_disable_dcc);
}
return 0;
@ -6676,7 +6690,12 @@ static void amdgpu_dm_commit_planes(struct drm_atomic_state *state,
fill_dc_plane_info_and_addr(
dm->adev, new_plane_state, tiling_flags,
&bundle->plane_infos[planes_count],
&bundle->flip_addrs[planes_count].address);
&bundle->flip_addrs[planes_count].address,
false);
DRM_DEBUG_DRIVER("plane: id=%d dcc_en=%d\n",
new_plane_state->plane->index,
bundle->plane_infos[planes_count].dcc.enable);
bundle->surface_updates[planes_count].plane_info =
&bundle->plane_infos[planes_count];
@ -8096,7 +8115,8 @@ dm_determine_update_type_for_commit(struct amdgpu_display_manager *dm,
ret = fill_dc_plane_info_and_addr(
dm->adev, new_plane_state, tiling_flags,
plane_info,
&flip_addr->address);
&flip_addr->address,
false);
if (ret)
goto cleanup;