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* [Intel-gfx] [PATCH] drm/i915/mtl: Introduce FBC B
@ 2022-08-17 12:26 Jani Nikula
  2022-08-17 12:38 ` Kahola, Mika
                   ` (7 more replies)
  0 siblings, 8 replies; 10+ messages in thread
From: Jani Nikula @ 2022-08-17 12:26 UTC (permalink / raw)
  To: intel-gfx; +Cc: jani.nikula

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

MTL introduces a second FBC engine. The two FBC engines can
operate entirely independently, FBC A serving pipe A and
FBC B serving pipe B.

The one place where things might go a bit wrong is the CFB
allocation from stolen. We might have to consider some change
to the allocation strategy to have a better chance of both
engines being able to allocate its CFB. Maybe FBC A should
allocate bottom up and FBC B top down, or something? For the
moment the allocation strategy is DRM_MM_INSERT_BEST for both.

Cc: Mika Kahola <mika.kahola@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
---
 drivers/gpu/drm/i915/display/intel_fbc.h | 1 +
 drivers/gpu/drm/i915/i915_pci.c          | 3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_fbc.h b/drivers/gpu/drm/i915/display/intel_fbc.h
index db60143295ec..4adb98afe6ff 100644
--- a/drivers/gpu/drm/i915/display/intel_fbc.h
+++ b/drivers/gpu/drm/i915/display/intel_fbc.h
@@ -19,6 +19,7 @@ struct intel_plane_state;
 
 enum intel_fbc_id {
 	INTEL_FBC_A,
+	INTEL_FBC_B,
 
 	I915_MAX_FBCS,
 };
diff --git a/drivers/gpu/drm/i915/i915_pci.c b/drivers/gpu/drm/i915/i915_pci.c
index 9fd788e147a3..d8446bb25d5e 100644
--- a/drivers/gpu/drm/i915/i915_pci.c
+++ b/drivers/gpu/drm/i915/i915_pci.c
@@ -1111,7 +1111,8 @@ static const struct intel_device_info pvc_info = {
 #define XE_LPDP_FEATURES	\
 	XE_LPD_FEATURES,	\
 	.display.ver = 14,	\
-	.display.has_cdclk_crawl = 1
+	.display.has_cdclk_crawl = 1, \
+	.display.fbc_mask = BIT(INTEL_FBC_A) | BIT(INTEL_FBC_B)
 
 __maybe_unused
 static const struct intel_device_info mtl_info = {
-- 
2.34.1


^ permalink raw reply related	[flat|nested] 10+ messages in thread

end of thread, other threads:[~2022-08-19  9:51 UTC | newest]

Thread overview: 10+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2022-08-17 12:26 [Intel-gfx] [PATCH] drm/i915/mtl: Introduce FBC B Jani Nikula
2022-08-17 12:38 ` Kahola, Mika
2022-08-19  9:51   ` Jani Nikula
2022-08-17 13:17 ` [Intel-gfx] ✗ Fi.CI.SPARSE: warning for " Patchwork
2022-08-17 13:28 ` [Intel-gfx] ✗ Fi.CI.BAT: failure " Patchwork
2022-08-17 14:19 ` [Intel-gfx] ✗ Fi.CI.SPARSE: warning for drm/i915/mtl: Introduce FBC B (rev2) Patchwork
2022-08-17 14:30 ` [Intel-gfx] ✗ Fi.CI.BAT: failure " Patchwork
2022-08-18 12:14 ` [Intel-gfx] ✗ Fi.CI.SPARSE: warning for drm/i915/mtl: Introduce FBC B (rev3) Patchwork
2022-08-18 12:26 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2022-08-18 23:37 ` [Intel-gfx] ✓ Fi.CI.IGT: " Patchwork

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