On Wed, Nov 08, 2017 at 05:09:33PM +0100, Maarten Lankhorst wrote: > Op 08-11-17 om 16:41 schreef Daniel Vetter: > > On Wed, Nov 08, 2017 at 10:29:20AM +0100, Maarten Lankhorst wrote: > >> Fixes the following error when fastset is enabled, caught by CI: > >> > >> [drm:ilk_validate_wm_level.part.8 [i915]] Sprite WM0 too large 56 (max 0) > >> [drm:ilk_validate_pipe_wm [i915]] LP0 watermark invalid > >> [drm:intel_crtc_atomic_check [i915]] No valid intermediate pipe watermarks are possible > >> > >> Triggered on debugfs_test.read_all_entries, but could have been any igt > >> test depending on ordering. > >> > >> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx> > > So I'm no expert on this, but why is this not needed for g4x and vlv > > intermediate wm? I think the commit message should explain that. I think > > it should also explain why simply shutting the above warnings up is safe. > > > > I think once that's fixed I understand why we need this and why it works, > > but probably better to get an Ack from Ville to make sure. > > -Daniel > True, reason it's not needed there is because intermediate calculation can't fail. > And yeah best say because BIOS wm are bogus here. Ok, with that (maybe a bit more verbose) explained in the commit message: Reviewed-by: Daniel Vetter <daniel.vetter@xxxxxxxx> > >> --- > >> drivers/gpu/drm/i915/intel_pm.c | 4 +++- > >> 1 file changed, 3 insertions(+), 1 deletion(-) > >> > >> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c > >> index 46440e2ecb33..9e8a0a9cac02 100644 > >> --- a/drivers/gpu/drm/i915/intel_pm.c > >> +++ b/drivers/gpu/drm/i915/intel_pm.c > >> @@ -3137,7 +3137,9 @@ static int ilk_compute_intermediate_wm(struct drm_device *dev, > >> * and after the vblank. > >> */ > >> *a = newstate->wm.ilk.optimal; > >> - if (!newstate->base.active || drm_atomic_crtc_needs_modeset(&newstate->base)) > >> + if (!newstate->base.active || > >> + drm_atomic_crtc_needs_modeset(&newstate->base) || > >> + oldstate->base.mode.private_flags & I915_MODE_FLAG_INHERITED) > >> return 0; > >> > >> a->pipe_enabled |= b->pipe_enabled; > >> -- > >> 2.15.0 > >> > >> _______________________________________________ > >> Intel-gfx mailing list > >> Intel-gfx@xxxxxxxxxxxxxxxxxxxxx > >> https://lists.freedesktop.org/mailman/listinfo/intel-gfx > > -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
