From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Currently we still use the SKL+ PLANE_SURF alignment even
for TGL+ even though the hardware no longer needs it.
Introduce a separate tgl_plane_min_alignment() and update
it to more accurately reflect the hardware requirements.
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
.../drm/i915/display/skl_universal_plane.c | 103 ++++++++++--------
1 file changed, 55 insertions(+), 48 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/skl_universal_plane.c b/drivers/gpu/drm/i915/display/skl_universal_plane.c
index 1ecd7c691317..ca7fc9fae990 100644
--- a/drivers/gpu/drm/i915/display/skl_universal_plane.c
+++ b/drivers/gpu/drm/i915/display/skl_universal_plane.c
@@ -502,75 +502,79 @@ skl_plane_max_stride(struct intel_plane *plane,
max_pixels, max_bytes);
}
-static unsigned int skl_plane_min_alignment(struct intel_plane *plane,
- const struct drm_framebuffer *fb,
- int color_plane)
+static u32 tgl_plane_min_alignment(struct intel_plane *plane,
+ const struct drm_framebuffer *fb,
+ int color_plane)
{
- struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
-
- if (intel_fb_uses_dpt(fb)) {
- /* AUX_DIST needs only 4K alignment */
- if (intel_fb_is_ccs_aux_plane(fb, color_plane))
- return 512 * 4096;
-
- /*
- * FIXME ADL sees GGTT/DMAR faults with async
- * flips unless we align to 16k at least.
- * Figure out what's going on here...
- */
- if (IS_ALDERLAKE_P(dev_priv) &&
- !intel_fb_is_ccs_modifier(fb->modifier) &&
- HAS_ASYNC_FLIPS(dev_priv))
- return 512 * 16 * 1024;
-
- return 512 * 4096;
- }
+ struct drm_i915_private *i915 = to_i915(plane->base.dev);
+ /* PLANE_SURF GGTT -> DPT alignment */
+ int mult = intel_fb_uses_dpt(fb) ? 512 : 1;
/* AUX_DIST needs only 4K alignment */
if (intel_fb_is_ccs_aux_plane(fb, color_plane))
- return 4096;
+ return mult * 4 * 1024;
if (is_semiplanar_uv_plane(fb, color_plane)) {
/*
* TODO: cross-check wrt. the bspec stride in bytes * 64 bytes
* alignment for linear UV planes on all platforms.
*/
- if (DISPLAY_VER(dev_priv) >= 12) {
- if (fb->modifier == DRM_FORMAT_MOD_LINEAR)
- return 256 * 1024;
-
- return intel_tile_row_size(fb, color_plane);
- }
-
- return 4096;
- }
-
- drm_WARN_ON(&dev_priv->drm, color_plane != 0);
-
- switch (fb->modifier) {
- case DRM_FORMAT_MOD_LINEAR:
- return 256 * 1024;
- case I915_FORMAT_MOD_X_TILED:
- if (HAS_ASYNC_FLIPS(dev_priv))
+ if (fb->modifier == DRM_FORMAT_MOD_LINEAR)
return 256 * 1024;
- return 0;
+
+ return intel_tile_row_size(fb, color_plane);
+ }
+
+ switch (fb->modifier) {
+ case DRM_FORMAT_MOD_LINEAR:
+ case I915_FORMAT_MOD_X_TILED:
+ case I915_FORMAT_MOD_Y_TILED:
+ case I915_FORMAT_MOD_4_TILED:
+ /*
+ * FIXME ADL sees GGTT/DMAR faults with async
+ * flips unless we align to 16k at least.
+ * Figure out what's going on here...
+ */
+ if (IS_ALDERLAKE_P(i915) && HAS_ASYNC_FLIPS(i915))
+ return mult * 16 * 1024;
+ return mult * 4 * 1024;
case I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS:
case I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS:
case I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC:
+ case I915_FORMAT_MOD_4_TILED_DG2_MC_CCS:
+ case I915_FORMAT_MOD_4_TILED_DG2_RC_CCS:
+ case I915_FORMAT_MOD_4_TILED_DG2_RC_CCS_CC:
case I915_FORMAT_MOD_4_TILED_MTL_MC_CCS:
case I915_FORMAT_MOD_4_TILED_MTL_RC_CCS:
case I915_FORMAT_MOD_4_TILED_MTL_RC_CCS_CC:
- return 16 * 1024;
+ /* 4x1 main surface tiles (16K) match 64B of AUX */
+ return max(mult * 4 * 1024, 16 * 1024);
+ default:
+ MISSING_CASE(fb->modifier);
+ return 0;
+ }
+}
+
+static u32 skl_plane_min_alignment(struct intel_plane *plane,
+ const struct drm_framebuffer *fb,
+ int color_plane)
+{
+ /*
+ * AUX_DIST needs only 4K alignment,
+ * as does ICL UV PLANE_SURF.
+ */
+ if (color_plane != 0)
+ return 4 * 1024;
+
+ switch (fb->modifier) {
+ case DRM_FORMAT_MOD_LINEAR:
+ case I915_FORMAT_MOD_X_TILED:
+ return 256 * 1024;
case I915_FORMAT_MOD_Y_TILED_CCS:
case I915_FORMAT_MOD_Yf_TILED_CCS:
case I915_FORMAT_MOD_Y_TILED:
- case I915_FORMAT_MOD_4_TILED:
case I915_FORMAT_MOD_Yf_TILED:
return 1 * 1024 * 1024;
- case I915_FORMAT_MOD_4_TILED_DG2_RC_CCS:
- case I915_FORMAT_MOD_4_TILED_DG2_RC_CCS_CC:
- case I915_FORMAT_MOD_4_TILED_DG2_MC_CCS:
- return 16 * 1024;
default:
MISSING_CASE(fb->modifier);
return 0;
@@ -2442,7 +2446,10 @@ skl_universal_plane_create(struct drm_i915_private *dev_priv,
else
plane->max_stride = skl_plane_max_stride;
- plane->min_alignment = skl_plane_min_alignment;
+ if (DISPLAY_VER(dev_priv) >= 12)
+ plane->min_alignment = tgl_plane_min_alignment;
+ else
+ plane->min_alignment = skl_plane_min_alignment;
if (DISPLAY_VER(dev_priv) >= 11) {
plane->update_noarm = icl_plane_update_noarm;
--
2.43.2
