From: Ville Syrjälä <ville.syrj...@linux.intel.com> Carve up stride_is_valid() into per-platform variants to make it easier to see what limits are actually being imposed.
TODO: maybe go for vfuncs later Reviewed-by: Juha-Pekka Heikkila <juhapekka.heikk...@gmail.com> Reviewed-by: Vinod Govindapillai <vinod.govindapil...@intel.com> Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com> --- drivers/gpu/drm/i915/display/intel_fbc.c | 64 ++++++++++++++++++------ 1 file changed, 49 insertions(+), 15 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_fbc.c b/drivers/gpu/drm/i915/display/intel_fbc.c index f12ea170b748..dc334b9d993f 100644 --- a/drivers/gpu/drm/i915/display/intel_fbc.c +++ b/drivers/gpu/drm/i915/display/intel_fbc.c @@ -853,36 +853,70 @@ void intel_fbc_cleanup(struct drm_i915_private *i915) } } -static bool stride_is_valid(const struct intel_plane_state *plane_state) +static bool i8xx_fbc_stride_is_valid(const struct intel_plane_state *plane_state) { - struct drm_i915_private *i915 = to_i915(plane_state->uapi.plane->dev); const struct drm_framebuffer *fb = plane_state->hw.fb; unsigned int stride = intel_fbc_plane_stride(plane_state) * fb->format->cpp[0]; - /* This should have been caught earlier. */ - if (drm_WARN_ON_ONCE(&i915->drm, (stride & (64 - 1)) != 0)) - return false; + return stride == 4096 || stride == 8192; +} - /* Below are the additional FBC restrictions. */ - if (stride < 512) - return false; +static bool i965_fbc_stride_is_valid(const struct intel_plane_state *plane_state) +{ + const struct drm_framebuffer *fb = plane_state->hw.fb; + unsigned int stride = intel_fbc_plane_stride(plane_state) * + fb->format->cpp[0]; - if (DISPLAY_VER(i915) == 2 || DISPLAY_VER(i915) == 3) - return stride == 4096 || stride == 8192; + return stride >= 2048 && stride <= 16384; +} - if (DISPLAY_VER(i915) == 4 && !IS_G4X(i915) && - (stride < 2048 || stride > 16384)) - return false; +static bool g4x_fbc_stride_is_valid(const struct intel_plane_state *plane_state) +{ + return true; +} + +static bool skl_fbc_stride_is_valid(const struct intel_plane_state *plane_state) +{ + const struct drm_framebuffer *fb = plane_state->hw.fb; + unsigned int stride = intel_fbc_plane_stride(plane_state) * + fb->format->cpp[0]; /* Display WA #1105: skl,bxt,kbl,cfl,glk */ - if ((DISPLAY_VER(i915) == 9 || IS_GEMINILAKE(i915)) && - fb->modifier == DRM_FORMAT_MOD_LINEAR && stride & 511) + if (fb->modifier == DRM_FORMAT_MOD_LINEAR && stride & 511) return false; return true; } +static bool icl_fbc_stride_is_valid(const struct intel_plane_state *plane_state) +{ + return true; +} + +static bool stride_is_valid(const struct intel_plane_state *plane_state) +{ + struct drm_i915_private *i915 = to_i915(plane_state->uapi.plane->dev); + const struct drm_framebuffer *fb = plane_state->hw.fb; + unsigned int stride = intel_fbc_plane_stride(plane_state) * + fb->format->cpp[0]; + + /* This should have been caught earlier. */ + if (drm_WARN_ON_ONCE(&i915->drm, (stride & (64 - 1)) != 0)) + return false; + + if (DISPLAY_VER(i915) >= 11) + return icl_fbc_stride_is_valid(plane_state); + else if (DISPLAY_VER(i915) >= 9) + return skl_fbc_stride_is_valid(plane_state); + else if (DISPLAY_VER(i915) >= 5 || IS_G4X(i915)) + return g4x_fbc_stride_is_valid(plane_state); + else if (DISPLAY_VER(i915) == 4) + return i965_fbc_stride_is_valid(plane_state); + else + return i8xx_fbc_stride_is_valid(plane_state); +} + static bool pixel_format_is_valid(const struct intel_plane_state *plane_state) { struct drm_i915_private *i915 = to_i915(plane_state->uapi.plane->dev); -- 2.41.0