drm/i915: Make sure cursor has enough ddb for the selected wm level (10a7e07b) · Commits · 戴 / test

We use a fixed ddb allocation for the cursor. Now the calculation actually makes sure we have enough ddb space, but let's double check anyway. Cc: Neel Desai <neel.desai@intel.com> Signed-off-by:

Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190312205844.6339-6-ville.syrjala@linux.intel.com Reviewed-by:

Matt Roper <matthew.d.roper@intel.com>

drivers/gpu/drm/i915/intel_pm.c

+9 −2

Original line number	Diff line number	Diff line
		@@ -4401,10 +4401,17 @@ skl_allocate_pipe_ddb(struct intel_crtc_state *cstate,
		for (level = ilk_wm_max_level(dev_priv); level >= 0; level--) {
		blocks = 0;
		for_each_plane_id_on_crtc(intel_crtc, plane_id) {
		if (plane_id == PLANE_CURSOR)
		wm = &cstate->wm.skl.optimal.planes[plane_id];

		if (plane_id == PLANE_CURSOR) {
		if (WARN_ON(wm->wm[level].min_ddb_alloc >
		total[PLANE_CURSOR])) {
		blocks = U32_MAX;
		break;
		}
		continue;
		}

		wm = &cstate->wm.skl.optimal.planes[plane_id];
		blocks += wm->wm[level].min_ddb_alloc;
		blocks += wm->uv_wm[level].min_ddb_alloc;
		}

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