On 19/06/2024 15:31, Matthew Auld wrote:
On BMG-G21 we need to disable fbc due to complications around the WA.
Signed-off-by: Matthew Auld <matthew.auld@xxxxxxxxx>
Cc: Jonathan Cavitt <jonathan.cavitt@xxxxxxxxx>
Cc: Matt Roper <matthew.d.roper@xxxxxxxxx>
Cc: Lucas De Marchi <lucas.demarchi@xxxxxxxxx>
Cc: Vinod Govindapillai <vinod.govindapillai@xxxxxxxxx>
Cc: intel-gfx@xxxxxxxxxxxxxxxxxxxxx
Can this be merged via drm-xe-next? The first patch is the xe centric
part of the WA, but here this is touching i915 display and xe.
---
drivers/gpu/drm/i915/display/intel_display_wa.h | 8 ++++++++
drivers/gpu/drm/i915/display/intel_fbc.c | 6 ++++++
drivers/gpu/drm/xe/Makefile | 4 +++-
drivers/gpu/drm/xe/display/xe_display_wa.c | 16 ++++++++++++++++
4 files changed, 33 insertions(+), 1 deletion(-)
create mode 100644 drivers/gpu/drm/xe/display/xe_display_wa.c
diff --git a/drivers/gpu/drm/i915/display/intel_display_wa.h b/drivers/gpu/drm/i915/display/intel_display_wa.h
index 63201d09852c..be644ab6ae00 100644
--- a/drivers/gpu/drm/i915/display/intel_display_wa.h
+++ b/drivers/gpu/drm/i915/display/intel_display_wa.h
@@ -6,8 +6,16 @@
#ifndef __INTEL_DISPLAY_WA_H__
#define __INTEL_DISPLAY_WA_H__
+#include <linux/types.h>
+
struct drm_i915_private;
void intel_display_wa_apply(struct drm_i915_private *i915);
+#ifdef I915
+static inline bool intel_display_needs_wa_16023588340(struct drm_i915_private *i915) { return false; }
+#else
+bool intel_display_needs_wa_16023588340(struct drm_i915_private *i915);
+#endif
+
#endif
diff --git a/drivers/gpu/drm/i915/display/intel_fbc.c b/drivers/gpu/drm/i915/display/intel_fbc.c
index 67116c9f1464..8488f82143a4 100644
--- a/drivers/gpu/drm/i915/display/intel_fbc.c
+++ b/drivers/gpu/drm/i915/display/intel_fbc.c
@@ -56,6 +56,7 @@
#include "intel_display_device.h"
#include "intel_display_trace.h"
#include "intel_display_types.h"
+#include "intel_display_wa.h"
#include "intel_fbc.h"
#include "intel_fbc_regs.h"
#include "intel_frontbuffer.h"
@@ -1237,6 +1238,11 @@ static int intel_fbc_check_plane(struct intel_atomic_state *state,
return 0;
}
+ if (intel_display_needs_wa_16023588340(i915)) {
+ plane_state->no_fbc_reason = "Wa_16023588340";
+ return 0;
+ }
+
/* WaFbcTurnOffFbcWhenHyperVisorIsUsed:skl,bxt */
if (i915_vtd_active(i915) && (IS_SKYLAKE(i915) || IS_BROXTON(i915))) {
plane_state->no_fbc_reason = "VT-d enabled";
diff --git a/drivers/gpu/drm/xe/Makefile b/drivers/gpu/drm/xe/Makefile
index 0e16e5029081..f7521fd5db4c 100644
--- a/drivers/gpu/drm/xe/Makefile
+++ b/drivers/gpu/drm/xe/Makefile
@@ -34,7 +34,8 @@ uses_generated_oob := \
$(obj)/xe_ring_ops.o \
$(obj)/xe_vm.o \
$(obj)/xe_wa.o \
- $(obj)/xe_ttm_stolen_mgr.o
+ $(obj)/xe_ttm_stolen_mgr.o \
+ $(obj)/display/xe_display_wa.o \
$(uses_generated_oob): $(generated_oob)
@@ -192,6 +193,7 @@ xe-$(CONFIG_DRM_XE_DISPLAY) += \
display/xe_display.o \
display/xe_display_misc.o \
display/xe_display_rps.o \
+ display/xe_display_wa.o \
display/xe_dsb_buffer.o \
display/xe_fb_pin.o \
display/xe_hdcp_gsc.o \
diff --git a/drivers/gpu/drm/xe/display/xe_display_wa.c b/drivers/gpu/drm/xe/display/xe_display_wa.c
new file mode 100644
index 000000000000..68e3d1959ad6
--- /dev/null
+++ b/drivers/gpu/drm/xe/display/xe_display_wa.c
@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2024 Intel Corporation
+ */
+
+#include "intel_display_wa.h"
+
+#include "xe_device.h"
+#include "xe_wa.h"
+
+#include <generated/xe_wa_oob.h>
+
+bool intel_display_needs_wa_16023588340(struct drm_i915_private *i915)
+{
+ return XE_WA(xe_root_mmio_gt(i915), 16023588340);
+}
