[Intel-gfx] [PATCH 3/3] drm/i915/fb: Fold modifier CCS type/tiling attribute to plane caps

Imre Deak imre.deak at intel.com
Tue Oct 26 16:15:17 UTC 2021


By using the modifier plane capability flags to encode the modifiers'
CCS type and tiling attributes, it becomes simpler to the check for
any of these capabilities when providing the list of supported
modifiers.

This also allows distinguishing modifiers on future platforms where
platforms with the same display version support different modifiers. An
example is DG2 and ADLP, both being D13, where DG2 supports only F and X
tiling, while ADLP supports only Y and X tiling. With the
PLANE_HAS_TILING_* plane caps added in this patch we can provide the
correct modifiers for each platform.

Cc: Juha-Pekka Heikkila <juhapekka.heikkila at gmail.com>
Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
Signed-off-by: Imre Deak <imre.deak at intel.com>
---
 drivers/gpu/drm/i915/display/i9xx_plane.c     |  2 +-
 drivers/gpu/drm/i915/display/intel_fb.c       | 80 +++++++++----------
 drivers/gpu/drm/i915/display/intel_fb.h       | 11 ++-
 drivers/gpu/drm/i915/display/intel_sprite.c   |  2 +-
 .../drm/i915/display/skl_universal_plane.c    |  7 +-
 5 files changed, 53 insertions(+), 49 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/i9xx_plane.c b/drivers/gpu/drm/i915/display/i9xx_plane.c
index a939accff7ee2..fdb857df8b0be 100644
--- a/drivers/gpu/drm/i915/display/i9xx_plane.c
+++ b/drivers/gpu/drm/i915/display/i9xx_plane.c
@@ -860,7 +860,7 @@ intel_primary_plane_create(struct drm_i915_private *dev_priv, enum pipe pipe)
 		plane->disable_flip_done = ilk_primary_disable_flip_done;
 	}
 
-	modifiers = intel_fb_plane_get_modifiers(dev_priv, PLANE_HAS_TILING);
+	modifiers = intel_fb_plane_get_modifiers(dev_priv, PLANE_HAS_TILING_X);
 
 	if (DISPLAY_VER(dev_priv) >= 5 || IS_G4X(dev_priv))
 		ret = drm_universal_plane_init(&dev_priv->drm, &plane->base,
diff --git a/drivers/gpu/drm/i915/display/intel_fb.c b/drivers/gpu/drm/i915/display/intel_fb.c
index 6b68f69940f0b..6339669d86df5 100644
--- a/drivers/gpu/drm/i915/display/intel_fb.c
+++ b/drivers/gpu/drm/i915/display/intel_fb.c
@@ -120,29 +120,25 @@ struct intel_modifier_desc {
 	.formats = format_list, \
 	.format_count = ARRAY_SIZE(format_list)
 
-	u8 tiling;
-	u8 is_linear:1;
+	u8 plane_caps;
 
 	struct {
-#define INTEL_CCS_RC		BIT(0)
-#define INTEL_CCS_RC_CC		BIT(1)
-#define INTEL_CCS_MC		BIT(2)
-
-#define INTEL_CCS_ANY		(INTEL_CCS_RC | INTEL_CCS_RC_CC | INTEL_CCS_MC)
-		u8 type:3;
 		u8 cc_planes:3;
 		u8 packed_aux_planes:4;
 		u8 planar_aux_planes:4;
 	} ccs;
 };
 
+#define PLANE_HAS_CCS_ANY	(PLANE_HAS_CCS_RC | PLANE_HAS_CCS_RC_CC | PLANE_HAS_CCS_MC)
+#define PLANE_HAS_TILING_ANY	(PLANE_HAS_TILING_X | PLANE_HAS_TILING_Y | PLANE_HAS_TILING_Yf)
+#define PLANE_HAS_TILING_NONE	0
+
 static const struct intel_modifier_desc intel_modifiers[] = {
 	{
 		.modifier = I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS,
 		.display_ver = { 12, 13 },
-		.tiling = I915_TILING_Y,
+		.plane_caps = PLANE_HAS_TILING_Y | PLANE_HAS_CCS_MC,
 
-		.ccs.type = INTEL_CCS_MC,
 		.ccs.packed_aux_planes = BIT(1),
 		.ccs.planar_aux_planes = BIT(2) | BIT(3),
 
@@ -150,18 +146,16 @@ static const struct intel_modifier_desc intel_modifiers[] = {
 	}, {
 		.modifier = I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS,
 		.display_ver = { 12, 13 },
-		.tiling = I915_TILING_Y,
+		.plane_caps = PLANE_HAS_TILING_Y | PLANE_HAS_CCS_RC,
 
-		.ccs.type = INTEL_CCS_RC,
 		.ccs.packed_aux_planes = BIT(1),
 
 		FORMAT_OVERRIDE(gen12_ccs_formats),
 	}, {
 		.modifier = I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC,
 		.display_ver = { 12, 13 },
-		.tiling = I915_TILING_Y,
+		.plane_caps = PLANE_HAS_TILING_Y | PLANE_HAS_CCS_RC_CC,
 
-		.ccs.type = INTEL_CCS_RC_CC,
 		.ccs.cc_planes = BIT(2),
 		.ccs.packed_aux_planes = BIT(1),
 
@@ -169,39 +163,34 @@ static const struct intel_modifier_desc intel_modifiers[] = {
 	}, {
 		.modifier = I915_FORMAT_MOD_Yf_TILED_CCS,
 		.display_ver = { 9, 11 },
-		.tiling = I915_TILING_NONE,
+		.plane_caps = PLANE_HAS_TILING_Yf | PLANE_HAS_CCS_RC,
 
-		.ccs.type = INTEL_CCS_RC,
 		.ccs.packed_aux_planes = BIT(1),
 
 		FORMAT_OVERRIDE(skl_ccs_formats),
 	}, {
 		.modifier = I915_FORMAT_MOD_Y_TILED_CCS,
 		.display_ver = { 9, 11 },
-		.tiling = I915_TILING_Y,
+		.plane_caps = PLANE_HAS_TILING_Y | PLANE_HAS_CCS_RC,
 
-		.ccs.type = INTEL_CCS_RC,
 		.ccs.packed_aux_planes = BIT(1),
 
 		FORMAT_OVERRIDE(skl_ccs_formats),
 	}, {
 		.modifier = I915_FORMAT_MOD_Yf_TILED,
 		.display_ver = { 9, 11 },
-		.tiling = I915_TILING_NONE,
+		.plane_caps = PLANE_HAS_TILING_Yf,
 	}, {
 		.modifier = I915_FORMAT_MOD_Y_TILED,
 		.display_ver = { 9, 13 },
-		.tiling = I915_TILING_Y,
+		.plane_caps = PLANE_HAS_TILING_Y,
 	}, {
 		.modifier = I915_FORMAT_MOD_X_TILED,
 		.display_ver = DISPLAY_VER_ALL,
-		.tiling = I915_TILING_X,
+		.plane_caps = PLANE_HAS_TILING_X,
 	}, {
 		.modifier = DRM_FORMAT_MOD_LINEAR,
 		.display_ver = DISPLAY_VER_ALL,
-		.tiling = I915_TILING_NONE,
-
-		.is_linear = true,
 	},
 };
 
@@ -259,9 +248,14 @@ intel_fb_get_format_info(const struct drm_mode_fb_cmd2 *cmd)
 	return lookup_format_info(md->formats, md->format_count, cmd->pixel_format);
 }
 
-static bool is_ccs_type_modifier(const struct intel_modifier_desc *md, u8 ccs_type)
+static bool plane_caps_contain_any(u8 caps, u8 mask)
 {
-	return md->ccs.type & ccs_type;
+	return caps & mask;
+}
+
+static bool plane_caps_contain_all(u8 caps, u8 mask)
+{
+	return (caps & mask) == mask;
 }
 
 /**
@@ -274,7 +268,7 @@ static bool is_ccs_type_modifier(const struct intel_modifier_desc *md, u8 ccs_ty
  */
 bool intel_fb_is_ccs_modifier(u64 modifier)
 {
-	return is_ccs_type_modifier(lookup_modifier(modifier), INTEL_CCS_ANY);
+	return plane_caps_contain_any(lookup_modifier(modifier)->plane_caps, PLANE_HAS_CCS_ANY);
 }
 
 /**
@@ -286,7 +280,7 @@ bool intel_fb_is_ccs_modifier(u64 modifier)
  */
 bool intel_fb_is_rc_ccs_cc_modifier(u64 modifier)
 {
-	return is_ccs_type_modifier(lookup_modifier(modifier), INTEL_CCS_RC_CC);
+	return plane_caps_contain_any(lookup_modifier(modifier)->plane_caps, PLANE_HAS_CCS_RC_CC);
 }
 
 /**
@@ -298,7 +292,7 @@ bool intel_fb_is_rc_ccs_cc_modifier(u64 modifier)
  */
 bool intel_fb_is_mc_ccs_modifier(u64 modifier)
 {
-	return is_ccs_type_modifier(lookup_modifier(modifier), INTEL_CCS_MC);
+	return plane_caps_contain_any(lookup_modifier(modifier)->plane_caps, PLANE_HAS_CCS_MC);
 }
 
 static bool check_modifier_display_ver_range(const struct intel_modifier_desc *md,
@@ -315,16 +309,7 @@ static bool plane_has_modifier(struct drm_i915_private *i915,
 	if (!IS_DISPLAY_VER(i915, md->display_ver.from, md->display_ver.until))
 		return false;
 
-	if (!md->is_linear &&
-	    !(plane_caps & PLANE_HAS_TILING))
-		return false;
-
-	if (is_ccs_type_modifier(md, INTEL_CCS_RC | INTEL_CCS_RC_CC) &&
-	    !(plane_caps & PLANE_HAS_CCS_RC))
-		return false;
-
-	if (is_ccs_type_modifier(md, INTEL_CCS_MC) &&
-	    !(plane_caps & PLANE_HAS_CCS_MC))
+	if (!plane_caps_contain_all(plane_caps, md->plane_caps))
 		return false;
 
 	return true;
@@ -392,7 +377,7 @@ static bool format_is_yuv_semiplanar(const struct intel_modifier_desc *md,
 	if (!info->is_yuv)
 		return false;
 
-	if (is_ccs_type_modifier(md, INTEL_CCS_ANY))
+	if (plane_caps_contain_any(md->plane_caps, PLANE_HAS_CCS_ANY))
 		yuv_planes = 4;
 	else
 		yuv_planes = 2;
@@ -672,7 +657,20 @@ intel_fb_align_height(const struct drm_framebuffer *fb,
 
 static unsigned int intel_fb_modifier_to_tiling(u64 fb_modifier)
 {
-	return lookup_modifier(fb_modifier)->tiling;
+	u8 tiling_caps = lookup_modifier(fb_modifier)->plane_caps & PLANE_HAS_TILING_ANY;
+
+	switch (tiling_caps) {
+	case PLANE_HAS_TILING_Y:
+		return I915_TILING_Y;
+	case PLANE_HAS_TILING_X:
+		return I915_TILING_X;
+	case PLANE_HAS_TILING_Yf:
+	case PLANE_HAS_TILING_NONE:
+		return I915_TILING_NONE;
+	default:
+		MISSING_CASE(tiling_caps);
+		return I915_TILING_NONE;
+	}
 }
 
 unsigned int intel_cursor_alignment(const struct drm_i915_private *i915)
diff --git a/drivers/gpu/drm/i915/display/intel_fb.h b/drivers/gpu/drm/i915/display/intel_fb.h
index 19f46144474d8..0bd285f6a69f0 100644
--- a/drivers/gpu/drm/i915/display/intel_fb.h
+++ b/drivers/gpu/drm/i915/display/intel_fb.h
@@ -21,10 +21,13 @@ struct intel_plane;
 struct intel_plane_state;
 
 enum intel_plane_caps {
-	PLANE_HAS_NO_CAPS = 0,
-	PLANE_HAS_TILING = BIT(0),
-	PLANE_HAS_CCS_RC = BIT(1),
-	PLANE_HAS_CCS_MC = BIT(2),
+	PLANE_HAS_NO_CAPS	= 0,
+	PLANE_HAS_CCS_RC	= BIT(0),
+	PLANE_HAS_CCS_RC_CC	= BIT(1),
+	PLANE_HAS_CCS_MC	= BIT(2),
+	PLANE_HAS_TILING_X	= BIT(3),
+	PLANE_HAS_TILING_Y	= BIT(4),
+	PLANE_HAS_TILING_Yf	= BIT(5),
 };
 
 bool intel_fb_is_ccs_modifier(u64 modifier);
diff --git a/drivers/gpu/drm/i915/display/intel_sprite.c b/drivers/gpu/drm/i915/display/intel_sprite.c
index 2f4f47ab9da03..8aa6c2f5e77d1 100644
--- a/drivers/gpu/drm/i915/display/intel_sprite.c
+++ b/drivers/gpu/drm/i915/display/intel_sprite.c
@@ -1810,7 +1810,7 @@ intel_sprite_plane_create(struct drm_i915_private *dev_priv,
 	plane->id = PLANE_SPRITE0 + sprite;
 	plane->frontbuffer_bit = INTEL_FRONTBUFFER(pipe, plane->id);
 
-	modifiers = intel_fb_plane_get_modifiers(dev_priv, PLANE_HAS_TILING);
+	modifiers = intel_fb_plane_get_modifiers(dev_priv, PLANE_HAS_TILING_X);
 
 	ret = drm_universal_plane_init(&dev_priv->drm, &plane->base,
 				       0, plane_funcs,
diff --git a/drivers/gpu/drm/i915/display/skl_universal_plane.c b/drivers/gpu/drm/i915/display/skl_universal_plane.c
index 317108e009bba..45f0225ec59dd 100644
--- a/drivers/gpu/drm/i915/display/skl_universal_plane.c
+++ b/drivers/gpu/drm/i915/display/skl_universal_plane.c
@@ -2095,9 +2095,12 @@ skl_universal_plane_create(struct drm_i915_private *dev_priv,
 	else
 		plane_type = DRM_PLANE_TYPE_OVERLAY;
 
-	plane_caps = PLANE_HAS_TILING;
+	plane_caps = PLANE_HAS_TILING_X | PLANE_HAS_TILING_Y;
+	if (IS_DISPLAY_VER(dev_priv, 9, 11))
+		plane_caps |= PLANE_HAS_TILING_Yf;
+
 	if (skl_plane_has_rc_ccs(dev_priv, pipe, plane_id))
-		plane_caps |= PLANE_HAS_CCS_RC;
+		plane_caps |= PLANE_HAS_CCS_RC | PLANE_HAS_CCS_RC_CC;
 
 	if (gen12_plane_has_mc_ccs(dev_priv, plane_id))
 		plane_caps |= PLANE_HAS_CCS_MC;
-- 
2.27.0



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