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* [Intel-gfx] [PATCH 1/6] drm/i915: Make a copy of the ggtt view for slave plane
@ 2020-01-10 18:32 Ville Syrjala
  2020-01-10 18:32 ` [Intel-gfx] [PATCH 2/6] drm/i915: Clear old hw.fb & co. from slave plane's state Ville Syrjala
                   ` (8 more replies)
  0 siblings, 9 replies; 17+ messages in thread
From: Ville Syrjala @ 2020-01-10 18:32 UTC (permalink / raw)
  To: intel-gfx

From: Ville Syrjälä <ville.syrjala@linux.intel.com>

intel_prepare_plane_fb() will always pin plane_state->hw.fb whenever
it is present. We copy that from the master plane to the slave plane,
but we fail to copy the corresponding ggtt view. Thus when it comes time
to pin the slave plane's fb we use some stale ggtt view left over from
the last time the plane was used as a non-slave plane. If that previous
use involved 90/270 degree rotation or remapping we'll try to shuffle
the pages of the new fb around accordingingly. However the new
fb may be backed by a bo with less pages than what the ggtt view
rotation/remapped info requires, and so we we trip a GEM_BUG().

Steps to reproduce on icl:
1. plane 1: whatever
   plane 6: largish !NV12 fb + 90 degree rotation
2. plane 1: smallish NV12 fb
   plane 6: make invisible so it gets slaved to plane 1
3. GEM_BUG()

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Closes: https://gitlab.freedesktop.org/drm/intel/issues/951
Fixes: 1f594b209fe1 ("drm/i915: Remove special case slave handling during hw programming, v3.")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_display.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 59c375879186..fafb67689dee 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -12366,6 +12366,7 @@ static int icl_check_nv12_planes(struct intel_crtc_state *crtc_state)
 		/* Copy parameters to slave plane */
 		linked_state->ctl = plane_state->ctl | PLANE_CTL_YUV420_Y_PLANE;
 		linked_state->color_ctl = plane_state->color_ctl;
+		linked_state->view = plane_state->view;
 		memcpy(linked_state->color_plane, plane_state->color_plane,
 		       sizeof(linked_state->color_plane));
 
-- 
2.24.1

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^ permalink raw reply related	[flat|nested] 17+ messages in thread

end of thread, other threads:[~2020-01-22 14:44 UTC | newest]

Thread overview: 17+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-01-10 18:32 [Intel-gfx] [PATCH 1/6] drm/i915: Make a copy of the ggtt view for slave plane Ville Syrjala
2020-01-10 18:32 ` [Intel-gfx] [PATCH 2/6] drm/i915: Clear old hw.fb & co. from slave plane's state Ville Syrjala
2020-01-22 14:44   ` Maarten Lankhorst
2020-01-10 18:32 ` [Intel-gfx] [PATCH 3/6] drm/i915: Stop looking at plane->state in intel_prepare_plane_fb() Ville Syrjala
2020-01-10 20:10   ` Chris Wilson
2020-01-10 18:32 ` [Intel-gfx] [PATCH 4/6] drm/i915: s/intel_state/state/ in intel_{prepare, cleanup}_plane_fb() Ville Syrjala
2020-01-10 20:12   ` Chris Wilson
2020-01-10 18:32 ` [Intel-gfx] [PATCH 5/6] drm/i915: Balance prepare_fb/cleanup_fb Ville Syrjala
2020-01-10 18:42   ` Chris Wilson
2020-01-10 18:32 ` [Intel-gfx] [PATCH 6/6] drm/i915: Cleanup properly if the implicit fence setup fails Ville Syrjala
2020-01-10 18:39   ` Chris Wilson
2020-01-10 18:54 ` [Intel-gfx] [PATCH 1/6] drm/i915: Make a copy of the ggtt view for slave plane Chris Wilson
2020-01-13 13:15   ` Ville Syrjälä
2020-01-13 13:22     ` Chris Wilson
2020-01-10 21:55 ` [Intel-gfx] ✓ Fi.CI.BAT: success for series starting with [1/6] " Patchwork
2020-01-13 14:54 ` [Intel-gfx] [PATCH 1/6] " Juha-Pekka Heikkila
2020-01-14 17:07 ` [Intel-gfx] ✗ Fi.CI.IGT: failure for series starting with [1/6] " Patchwork

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