[Intel-gfx] [PATCH] drm/i915/gt: One more flush for Baytrail clear residuals

Chris Wilson chris at chris-wilson.co.uk
Mon Jan 18 18:43:26 UTC 2021

CI reports that Baytail requires one more invalidate after CACHE_MODE
for it to be happy.

Fixes: ace44e13e577 ("drm/i915/gt: Clear CACHE_MODE prior to clearing residuals")
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala at linux.intel.com>
Cc: Akeem G Abodunrin <akeem.g.abodunrin at intel.com>
 drivers/gpu/drm/i915/gt/gen7_renderclear.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/i915/gt/gen7_renderclear.c b/drivers/gpu/drm/i915/gt/gen7_renderclear.c
index 39478712769f..145809c97775 100644
--- a/drivers/gpu/drm/i915/gt/gen7_renderclear.c
+++ b/drivers/gpu/drm/i915/gt/gen7_renderclear.c
@@ -397,6 +397,7 @@ static void emit_batch(struct i915_vma * const vma,
 	batch_add(&cmds, 0xffff0000);
 	batch_add(&cmds, i915_mmio_reg_offset(CACHE_MODE_1));
 	batch_add(&cmds, 0xffff0000 | PIXEL_SUBSPAN_COLLECT_OPT_DISABLE);
+	gen7_emit_pipeline_invalidate(&cmds);
 	/* Switch to the media pipeline and our base address */

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