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drm/i915: Extract intel_fb_needs_cpu_access()

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Replace the naked "does the framebuffer have a clear color
plane?" checks with a more abstract helper that simply tells
us whether we require CPU access to the framebuffer's memory.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patch.msgid.link/20260416174448.28264-4-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Ville Syrjälä 2026-04-16 20:44:39 +03:00
parent a89b7f72f2
commit 861e31fb43
4 changed files with 8 additions and 2 deletions
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5
drivers/gpu/drm/i915/display/intel_fb.c
View File

@ -521,6 +521,11 @@ bool intel_fb_needs_64k_phys(u64 modifier)
INTEL_PLANE_CAP_NEED64K_PHYS);
}
bool intel_fb_needs_cpu_access(const struct drm_framebuffer *fb)
{
return intel_fb_rc_ccs_cc_plane(fb) >= 0;
}
/**
* intel_fb_is_tile4_modifier: Check if a modifier is a tile4 modifier type
* @modifier: Modifier to check

1
drivers/gpu/drm/i915/display/intel_fb.h
View File

@ -38,6 +38,7 @@ bool intel_fb_is_rc_ccs_cc_modifier(u64 modifier);
bool intel_fb_is_mc_ccs_modifier(u64 modifier);
bool intel_fb_needs_64k_phys(u64 modifier);
bool intel_fb_is_tile4_modifier(u64 modifier);
bool intel_fb_needs_cpu_access(const struct drm_framebuffer *fb);
bool intel_fb_is_ccs_aux_plane(const struct drm_framebuffer *fb, int color_plane);
int intel_fb_rc_ccs_cc_plane(const struct drm_framebuffer *fb);

2
drivers/gpu/drm/i915/i915_fb_pin.c
View File

@ -61,7 +61,7 @@ intel_fb_pin_to_dpt(const struct drm_framebuffer *fb,
* ensure it is always in the mappable part of lmem, if this is
* a small-bar device.
*/
if (intel_fb_rc_ccs_cc_plane(fb) >= 0)
if (intel_fb_needs_cpu_access(fb))
flags &= ~I915_BO_ALLOC_GPU_ONLY;
ret = __i915_gem_object_migrate(obj, &ww, INTEL_REGION_LMEM_0,
flags);

2
drivers/gpu/drm/xe/display/xe_fb_pin.c
View File

@ -335,7 +335,7 @@ static struct i915_vma *__xe_pin_fb_vma(const struct intel_framebuffer *fb,
refcount_set(&vma->ref, 1);
if (IS_DGFX(to_xe_device(bo->ttm.base.dev)) &&
intel_fb_rc_ccs_cc_plane(&fb->base) >= 0 &&
intel_fb_needs_cpu_access(&fb->base) &&
!(bo->flags & XE_BO_FLAG_NEEDS_CPU_ACCESS)) {
struct xe_vram_region *vram = xe_device_get_root_tile(xe)->mem.vram;