From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Consolidate the "should we allocate fbdev fb in stolen?"
check into a helper function. Makes it easier to change the
heuristics without having to change so many places.
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_fbdev_fb.c | 24 ++++++++++++-------
drivers/gpu/drm/i915/display/intel_fbdev_fb.h | 5 +++-
.../drm/i915/display/intel_plane_initial.c | 10 +++-----
3 files changed, 23 insertions(+), 16 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_fbdev_fb.c b/drivers/gpu/drm/i915/display/intel_fbdev_fb.c
index 497525ef9668..0a6445acb100 100644
--- a/drivers/gpu/drm/i915/display/intel_fbdev_fb.c
+++ b/drivers/gpu/drm/i915/display/intel_fbdev_fb.c
@@ -11,6 +11,19 @@
#include "intel_display_types.h"
#include "intel_fbdev_fb.h"
+bool intel_fbdev_fb_prefer_stolen(struct intel_display *display,
+ unsigned int size)
+{
+ struct drm_i915_private *i915 = to_i915(display->drm);
+
+ /*
+ * If the FB is too big, just don't use it since fbdev is not very
+ * important and we should probably use that space with FBC or other
+ * features.
+ */
+ return i915->dsm.usable_size >= size * 2;
+}
+
struct intel_framebuffer *intel_fbdev_fb_alloc(struct drm_fb_helper *helper,
struct drm_fb_helper_surface_size *sizes)
{
@@ -42,14 +55,9 @@ struct intel_framebuffer *intel_fbdev_fb_alloc(struct drm_fb_helper *helper,
I915_BO_ALLOC_CONTIGUOUS |
I915_BO_ALLOC_USER);
} else {
- /*
- * If the FB is too big, just don't use it since fbdev is not very
- * important and we should probably use that space with FBC or other
- * features.
- *
- * Also skip stolen on MTL as Wa_22018444074 mitigation.
- */
- if (!(IS_METEORLAKE(dev_priv)) && size * 2 < dev_priv->dsm.usable_size)
+ /* skip stolen on MTL as Wa_22018444074 mitigation */
+ if (!IS_METEORLAKE(dev_priv) &&
+ intel_fbdev_fb_prefer_stolen(&dev_priv->display, size))
obj = i915_gem_object_create_stolen(dev_priv, size);
if (IS_ERR(obj))
obj = i915_gem_object_create_shmem(dev_priv, size);
diff --git a/drivers/gpu/drm/i915/display/intel_fbdev_fb.h b/drivers/gpu/drm/i915/display/intel_fbdev_fb.h
index 4832fe688fbf..3b9033bd2160 100644
--- a/drivers/gpu/drm/i915/display/intel_fbdev_fb.h
+++ b/drivers/gpu/drm/i915/display/intel_fbdev_fb.h
@@ -6,16 +6,19 @@
#ifndef __INTEL_FBDEV_FB_H__
#define __INTEL_FBDEV_FB_H__
+#include <linux/types.h>
+
struct drm_fb_helper;
struct drm_fb_helper_surface_size;
struct drm_i915_gem_object;
struct drm_i915_private;
struct fb_info;
struct i915_vma;
+struct intel_display;
struct intel_framebuffer *intel_fbdev_fb_alloc(struct drm_fb_helper *helper,
struct drm_fb_helper_surface_size *sizes);
int intel_fbdev_fb_fill_info(struct drm_i915_private *i915, struct fb_info *info,
struct drm_i915_gem_object *obj, struct i915_vma *vma);
-
+bool intel_fbdev_fb_prefer_stolen(struct intel_display *display, unsigned int size);
#endif
diff --git a/drivers/gpu/drm/i915/display/intel_plane_initial.c b/drivers/gpu/drm/i915/display/intel_plane_initial.c
index ada1792df5b3..4622bb5f3426 100644
--- a/drivers/gpu/drm/i915/display/intel_plane_initial.c
+++ b/drivers/gpu/drm/i915/display/intel_plane_initial.c
@@ -11,6 +11,7 @@
#include "intel_display.h"
#include "intel_display_types.h"
#include "intel_fb.h"
+#include "intel_fbdev_fb.h"
#include "intel_frontbuffer.h"
#include "intel_plane_initial.h"
@@ -160,15 +161,10 @@ initial_plane_vma(struct drm_i915_private *i915,
mem->min_page_size);
size -= base;
- /*
- * If the FB is too big, just don't use it since fbdev is not very
- * important and we should probably use that space with FBC or other
- * features.
- */
if (IS_ENABLED(CONFIG_FRAMEBUFFER_CONSOLE) &&
mem == i915->mm.stolen_region &&
- size * 2 > i915->dsm.usable_size) {
- drm_dbg_kms(&i915->drm, "Initial FB size exceeds half of stolen, discarding\n");
+ !intel_fbdev_fb_prefer_stolen(&i915->display, size)) {
+ drm_dbg_kms(&i915->drm, "Initial FB size uses too much stolen, discarding\n");
return NULL;
}
--
2.44.2
