Hi,
On 02/07/2024 09:17, Jani Nikula wrote:
On Mon, 01 Jul 2024, Matthew Auld <[email protected]> wrote:
On BMG-G21 we need to disable fbc due to complications around the WA.
v2:
- Try to handle with i915_drv.h and compat layer. (Rodrigo)
Signed-off-by: Matthew Auld <[email protected]>
Cc: Jonathan Cavitt <[email protected]>
Cc: Matt Roper <[email protected]>
Cc: Lucas De Marchi <[email protected]>
Cc: Vinod Govindapillai <[email protected]>
Cc: Rodrigo Vivi <[email protected]>
Cc: [email protected]
---
drivers/gpu/drm/i915/display/intel_fbc.c | 5 +++++
drivers/gpu/drm/i915/i915_drv.h | 2 ++
drivers/gpu/drm/xe/compat-i915-headers/i915_drv.h | 5 +++++
3 files changed, 12 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_fbc.c
b/drivers/gpu/drm/i915/display/intel_fbc.c
index 67116c9f1464..60131de77b4c 100644
--- a/drivers/gpu/drm/i915/display/intel_fbc.c
+++ b/drivers/gpu/drm/i915/display/intel_fbc.c
@@ -1237,6 +1237,11 @@ static int intel_fbc_check_plane(struct
intel_atomic_state *state,
return 0;
}
+ if (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/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index d7723dd11c80..816a01fda3fe 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -762,4 +762,6 @@ IS_SUBPLATFORM(const struct drm_i915_private *i915,
#define HAS_LMEMBAR_SMEM_STOLEN(i915) (!HAS_LMEM(i915) && \
GRAPHICS_VER_FULL(i915) >= IP_VER(12,
70))
+#define DISPLAY_NEEDS_WA_16023588340(i915) false
+
Display feature macros don't belong in i915_drv.h.
There is also the v1 here:
https://patchwork.freedesktop.org/patch/599900/?series=135061&rev=1
Where feedback was to handle it in i915_drv.h. Is the v1 method
acceptable here? Do you have an alternative suggestion?
BR,
Jani.
#endif
diff --git a/drivers/gpu/drm/xe/compat-i915-headers/i915_drv.h
b/drivers/gpu/drm/xe/compat-i915-headers/i915_drv.h
index 2feedddf1e40..a4256144dff7 100644
--- a/drivers/gpu/drm/xe/compat-i915-headers/i915_drv.h
+++ b/drivers/gpu/drm/xe/compat-i915-headers/i915_drv.h
@@ -15,6 +15,9 @@
#include "i915_utils.h"
#include "intel_runtime_pm.h"
#include "xe_device_types.h"
+#include "xe_wa.h"
+
+#include <generated/xe_wa_oob.h>
static inline struct drm_i915_private *to_i915(const struct drm_device *dev)
{
@@ -120,6 +123,8 @@ struct i915_sched_attr {
#define FORCEWAKE_ALL XE_FORCEWAKE_ALL
+#define DISPLAY_NEEDS_WA_16023588340(xe) XE_WA(xe_root_mmio_gt(xe), 16023588340)
+
#ifdef CONFIG_ARM64
/*
* arm64 indirectly includes linux/rtc.h,
