On 2021-11-09 00:14, Shirish S wrote:
> update developers with next level of info about unsupported
> display configuration query that led to atomic check failure.
>
> Signed-off-by: Shirish S <shirish.s@xxxxxxx>
Reviewed-by: Harry Wentland <harry.wentland@xxxxxxx>
Harry
> ---
> .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 69 ++++++++++++++-----
> 1 file changed, 51 insertions(+), 18 deletions(-)
>
> 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 b1d9e89e5ae9..b7044c04a7c5 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> @@ -10755,8 +10755,10 @@ static int amdgpu_dm_atomic_check(struct drm_device *dev,
> trace_amdgpu_dm_atomic_check_begin(state);
>
> ret = drm_atomic_helper_check_modeset(dev, state);
> - if (ret)
> + if (ret) {
> + DRM_DEBUG_DRIVER("drm_atomic_helper_check_modeset() failed\n");
> goto fail;
> + }
>
> /* Check connector changes */
> for_each_oldnew_connector_in_state(state, connector, old_con_state, new_con_state, i) {
> @@ -10772,6 +10774,7 @@ static int amdgpu_dm_atomic_check(struct drm_device *dev,
>
> new_crtc_state = drm_atomic_get_crtc_state(state, new_con_state->crtc);
> if (IS_ERR(new_crtc_state)) {
> + DRM_DEBUG_DRIVER("drm_atomic_get_crtc_state() failed\n");
> ret = PTR_ERR(new_crtc_state);
> goto fail;
> }
> @@ -10786,8 +10789,10 @@ static int amdgpu_dm_atomic_check(struct drm_device *dev,
> for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) {
> if (drm_atomic_crtc_needs_modeset(new_crtc_state)) {
> ret = add_affected_mst_dsc_crtcs(state, crtc);
> - if (ret)
> + if (ret) {
> + DRM_DEBUG_DRIVER("add_affected_mst_dsc_crtcs() failed\n");
> goto fail;
> + }
> }
> }
> }
> @@ -10802,19 +10807,25 @@ static int amdgpu_dm_atomic_check(struct drm_device *dev,
> continue;
>
> ret = amdgpu_dm_verify_lut_sizes(new_crtc_state);
> - if (ret)
> + if (ret) {
> + DRM_DEBUG_DRIVER("amdgpu_dm_verify_lut_sizes() failed\n");
> goto fail;
> + }
>
> if (!new_crtc_state->enable)
> continue;
>
> ret = drm_atomic_add_affected_connectors(state, crtc);
> - if (ret)
> + if (ret) {
> + DRM_DEBUG_DRIVER("drm_atomic_add_affected_connectors() failed\n");
> goto fail;
> + }
>
> ret = drm_atomic_add_affected_planes(state, crtc);
> - if (ret)
> + if (ret) {
> + DRM_DEBUG_DRIVER("drm_atomic_add_affected_planes() failed\n");
> goto fail;
> + }
>
> if (dm_old_crtc_state->dsc_force_changed)
> new_crtc_state->mode_changed = true;
> @@ -10851,6 +10862,7 @@ static int amdgpu_dm_atomic_check(struct drm_device *dev,
>
> if (IS_ERR(new_plane_state)) {
> ret = PTR_ERR(new_plane_state);
> + DRM_DEBUG_DRIVER("new_plane_state is BAD\n");
> goto fail;
> }
> }
> @@ -10863,8 +10875,10 @@ static int amdgpu_dm_atomic_check(struct drm_device *dev,
> new_plane_state,
> false,
> &lock_and_validation_needed);
> - if (ret)
> + if (ret) {
> + DRM_DEBUG_DRIVER("dm_update_plane_state() failed\n");
> goto fail;
> + }
> }
>
> /* Disable all crtcs which require disable */
> @@ -10874,8 +10888,10 @@ static int amdgpu_dm_atomic_check(struct drm_device *dev,
> new_crtc_state,
> false,
> &lock_and_validation_needed);
> - if (ret)
> + if (ret) {
> + DRM_DEBUG_DRIVER("DISABLE: dm_update_crtc_state() failed\n");
> goto fail;
> + }
> }
>
> /* Enable all crtcs which require enable */
> @@ -10885,8 +10901,10 @@ static int amdgpu_dm_atomic_check(struct drm_device *dev,
> new_crtc_state,
> true,
> &lock_and_validation_needed);
> - if (ret)
> + if (ret) {
> + DRM_DEBUG_DRIVER("ENABLE: dm_update_crtc_state() failed\n");
> goto fail;
> + }
> }
>
> /* Add new/modified planes */
> @@ -10896,20 +10914,26 @@ static int amdgpu_dm_atomic_check(struct drm_device *dev,
> new_plane_state,
> true,
> &lock_and_validation_needed);
> - if (ret)
> + if (ret) {
> + DRM_DEBUG_DRIVER("dm_update_plane_state() failed\n");
> goto fail;
> + }
> }
>
> /* Run this here since we want to validate the streams we created */
> ret = drm_atomic_helper_check_planes(dev, state);
> - if (ret)
> + if (ret) {
> + DRM_DEBUG_DRIVER("drm_atomic_helper_check_planes() failed\n");
> goto fail;
> + }
>
> /* Check cursor planes scaling */
> for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) {
> ret = dm_check_crtc_cursor(state, crtc, new_crtc_state);
> - if (ret)
> + if (ret) {
> + DRM_DEBUG_DRIVER("dm_check_crtc_cursor() failed\n");
> goto fail;
> + }
> }
>
> if (state->legacy_cursor_update) {
> @@ -10996,20 +11020,28 @@ static int amdgpu_dm_atomic_check(struct drm_device *dev,
> */
> if (lock_and_validation_needed) {
> ret = dm_atomic_get_state(state, &dm_state);
> - if (ret)
> + if (ret) {
> + DRM_DEBUG_DRIVER("dm_atomic_get_state() failed\n");
> goto fail;
> + }
>
> ret = do_aquire_global_lock(dev, state);
> - if (ret)
> + if (ret) {
> + DRM_DEBUG_DRIVER("do_aquire_global_lock() failed\n");
> goto fail;
> + }
>
> #if defined(CONFIG_DRM_AMD_DC_DCN)
> - if (!compute_mst_dsc_configs_for_state(state, dm_state->context, vars))
> + if (!compute_mst_dsc_configs_for_state(state, dm_state->context, vars)) {
> + DRM_DEBUG_DRIVER("compute_mst_dsc_configs_for_state() failed\n");
> goto fail;
> + }
>
> ret = dm_update_mst_vcpi_slots_for_dsc(state, dm_state->context, vars);
> - if (ret)
> + if (ret) {
> + DRM_DEBUG_DRIVER("dm_update_mst_vcpi_slots_for_dsc() failed\n");
> goto fail;
> + }
> #endif
>
> /*
> @@ -11019,12 +11051,13 @@ static int amdgpu_dm_atomic_check(struct drm_device *dev,
> * to get stuck in an infinite loop and hang eventually.
> */
> ret = drm_dp_mst_atomic_check(state);
> - if (ret)
> + if (ret) {
> + DRM_DEBUG_DRIVER("drm_dp_mst_atomic_check() failed\n");
> goto fail;
> + }
> status = dc_validate_global_state(dc, dm_state->context, false);
> if (status != DC_OK) {
> - drm_dbg_atomic(dev,
> - "DC global validation failure: %s (%d)",
> + DRM_DEBUG_DRIVER("DC global validation failure: %s (%d)",
> dc_status_to_str(status), status);
> ret = -EINVAL;
> goto fail;
>
