dri-devel Archive on lore.kernel.org
 help / color / mirror / Atom feed
* [PATCH] drm/i915: Fix aux invalidation with proper pipe_control flag
@ 2023-09-19 11:47 Nirmoy Das
  2023-09-19 12:11 ` Andi Shyti
  2023-09-19 12:42 ` Andrzej Hajda
  0 siblings, 2 replies; 5+ messages in thread
From: Nirmoy Das @ 2023-09-19 11:47 UTC (permalink / raw)
  To: intel-gfx
  Cc: Andi Shyti, Tvrtko Ursulin, Lucas De Marchi, Tejas Upadhyay,
	Jonathan Cavitt, stable, dri-devel, Andrzej Hajda, Matt Roper,
	Prathap Kumar Valsan, Nirmoy Das

The suggestion from the spec is to do l3 fabric flush not L3 flush.

Fixes: 78a6ccd65fa3 ("drm/i915/gt: Ensure memory quiesced before
invalidation")
Cc: Jonathan Cavitt <jonathan.cavitt@intel.com>
Cc: Andi Shyti <andi.shyti@linux.intel.com>
Cc: <stable@vger.kernel.org> # v5.8+
Cc: Nirmoy Das <nirmoy.das@intel.com>
Cc: Andrzej Hajda <andrzej.hajda@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: Tejas Upadhyay <tejas.upadhyay@intel.com>
Cc: Prathap Kumar Valsan <prathap.kumar.valsan@intel.com>
Signed-off-by: Nirmoy Das <nirmoy.das@intel.com>
---
 drivers/gpu/drm/i915/gt/gen8_engine_cs.c     | 6 +++++-
 drivers/gpu/drm/i915/gt/intel_gpu_commands.h | 1 +
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/gt/gen8_engine_cs.c b/drivers/gpu/drm/i915/gt/gen8_engine_cs.c
index 0143445dba83..a4b241d502c8 100644
--- a/drivers/gpu/drm/i915/gt/gen8_engine_cs.c
+++ b/drivers/gpu/drm/i915/gt/gen8_engine_cs.c
@@ -272,7 +272,11 @@ int gen12_emit_flush_rcs(struct i915_request *rq, u32 mode)
 			bit_group_0 |= PIPE_CONTROL_CCS_FLUSH;
 
 		bit_group_1 |= PIPE_CONTROL_TILE_CACHE_FLUSH;
-		bit_group_1 |= PIPE_CONTROL_FLUSH_L3;
+		if (mode & EMIT_FLUSH)
+			bit_group_1 |= PIPE_CONTROL_FLUSH_L3;
+		else if (gen12_needs_ccs_aux_inv(engine))
+			bit_group_1 |= PIPE_CONTROL_L3_FABRIC_FLUSH;
+
 		bit_group_1 |= PIPE_CONTROL_RENDER_TARGET_CACHE_FLUSH;
 		bit_group_1 |= PIPE_CONTROL_DEPTH_CACHE_FLUSH;
 		/* Wa_1409600907:tgl,adl-p */
diff --git a/drivers/gpu/drm/i915/gt/intel_gpu_commands.h b/drivers/gpu/drm/i915/gt/intel_gpu_commands.h
index 2bd8d98d2110..12e8dc481c53 100644
--- a/drivers/gpu/drm/i915/gt/intel_gpu_commands.h
+++ b/drivers/gpu/drm/i915/gt/intel_gpu_commands.h
@@ -284,6 +284,7 @@
 #define   DISPLAY_PLANE_A           (0<<20)
 #define   DISPLAY_PLANE_B           (1<<20)
 #define GFX_OP_PIPE_CONTROL(len)	((0x3<<29)|(0x3<<27)|(0x2<<24)|((len)-2))
+#define   PIPE_CONTROL_L3_FABRIC_FLUSH			(1<<30)
 #define   PIPE_CONTROL_COMMAND_CACHE_INVALIDATE		(1<<29) /* gen11+ */
 #define   PIPE_CONTROL_TILE_CACHE_FLUSH			(1<<28) /* gen11+ */
 #define   PIPE_CONTROL_FLUSH_L3				(1<<27)
-- 
2.41.0


^ permalink raw reply related	[flat|nested] 5+ messages in thread

end of thread, other threads:[~2023-09-20 11:18 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2023-09-19 11:47 [PATCH] drm/i915: Fix aux invalidation with proper pipe_control flag Nirmoy Das
2023-09-19 12:11 ` Andi Shyti
2023-09-19 12:19   ` Tapani Pälli
2023-09-20 11:18     ` Nirmoy Das
2023-09-19 12:42 ` Andrzej Hajda

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox