Render Decompression is supported with Y-Tiled main surface. The CCS is
linear and has 4 bits of data for each main surface cache line pair, a
ratio of 1:256. Additional Clear Color information is passed from the
user-space through an offset in the GEM BO. Add a new modifier to identify
and parse new Clear Color information and extend Gen12 render decompression
functionality to the newly added modifier.
v2: Fix has_alpha flag for modifiers, omit CC modifier during initial
plane config(Matt). Fix Lookup error.
Cc: Dhinakaran Pandiyan <[email protected]>
Cc: Ville Syrjala <[email protected]>
Cc: Shashank Sharma <[email protected]>
Cc: Rafael Antognolli <[email protected]>
Cc: Matt Roper <[email protected]>
Cc: Nanley G Chery <[email protected]>
Signed-off-by: Radhakrishna Sripada <[email protected]>
---
drivers/gpu/drm/i915/display/intel_display.c | 38 +++++++++++++++++++
.../drm/i915/display/intel_display_types.h | 3 ++
drivers/gpu/drm/i915/display/intel_sprite.c | 11 +++++-
drivers/gpu/drm/i915/i915_reg.h | 12 ++++++
4 files changed, 63 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/display/intel_display.c
b/drivers/gpu/drm/i915/display/intel_display.c
index 21db6539de64..5c5dadcd02d1 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -1916,6 +1916,7 @@ intel_tile_width_bytes(const struct drm_framebuffer *fb,
int color_plane)
return 64;
/* fall through */
case I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS:
+ case I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC:
if (color_plane == 1)
return 64;
/* fall through */
@@ -2060,6 +2061,7 @@ static unsigned int intel_surf_alignment(const struct
drm_framebuffer *fb,
return 256 * 1024;
return 0;
case I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS:
+ case I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC:
return 16 * 1024;
case I915_FORMAT_MOD_Y_TILED_CCS:
case I915_FORMAT_MOD_Yf_TILED_CCS:
@@ -2264,6 +2266,7 @@ static bool is_surface_linear(u64 modifier, int
color_plane)
case DRM_FORMAT_MOD_LINEAR:
return true;
case I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS:
+ case I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC:
return color_plane == 1;
case I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS:
return color_plane == 1 || color_plane == 3;
@@ -2458,6 +2461,7 @@ static unsigned int intel_fb_modifier_to_tiling(u64
fb_modifier)
case I915_FORMAT_MOD_Y_TILED_CCS:
case I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS:
case I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS:
+ case I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC:
return I915_TILING_Y;
default:
return I915_TILING_NONE;
@@ -2511,6 +2515,25 @@ static const struct drm_format_info gen12_ccs_formats[]
= {
.cpp = { 1, 1, 2, 1}, .hsub = 2, .vsub = 2, .is_yuv = true },
};
+/*
+ * Gen-12 compression uses 4 bits of CCS data for each cache line pair in the
+ * main surface. And each 64B CCS cache line represents an area of 4x1 Y-tiles
+ * in the main surface. With 4 byte pixels and each Y-tile having dimensions of
+ * 32x32 pixels, the ratio turns out to 1B in the CCS for every 2 x 32 pixels
in
+ * the main surface. Additional surface is used to pass the Clear Color
+ * structure for the driver to program the DE.
+ */
+static const struct drm_format_info gen12_ccs_cc_formats[] = {
+ { .format = DRM_FORMAT_XRGB8888, .depth = 24, .num_planes = 3,
+ .cpp = { 4, 1, 0, }, .hsub = 2, .vsub = 32, },
+ { .format = DRM_FORMAT_XBGR8888, .depth = 24, .num_planes = 3,
+ .cpp = { 4, 1, 0, }, .hsub = 2, .vsub = 32, },
+ { .format = DRM_FORMAT_ARGB8888, .depth = 32, .num_planes = 3,
+ .cpp = { 4, 1, 0, }, .hsub = 2, .vsub = 32, .has_alpha = true },
+ { .format = DRM_FORMAT_ABGR8888, .depth = 32, .num_planes = 3,
+ .cpp = { 4, 1, 0, }, .hsub = 2, .vsub = 32, .has_alpha = true },
+};
+
static const struct drm_format_info *
lookup_format_info(const struct drm_format_info formats[],
int num_formats, u32 format)
@@ -2538,6 +2561,10 @@ intel_get_format_info(const struct drm_mode_fb_cmd2 *cmd)
return lookup_format_info(gen12_ccs_formats,
ARRAY_SIZE(gen12_ccs_formats),
cmd->pixel_format);
+ case I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC:
+ return lookup_format_info(gen12_ccs_cc_formats,
+ ARRAY_SIZE(gen12_ccs_cc_formats),
+ cmd->pixel_format);
default:
return NULL;
}
@@ -2547,6 +2574,7 @@ bool is_ccs_modifier(u64 modifier)
{
return modifier == I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS ||
modifier == I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS ||
+ modifier == I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC ||
modifier == I915_FORMAT_MOD_Y_TILED_CCS ||
modifier == I915_FORMAT_MOD_Yf_TILED_CCS;
}
@@ -4274,6 +4302,7 @@ static u32 skl_plane_ctl_tiling(u64 fb_modifier)
case I915_FORMAT_MOD_Y_TILED:
return PLANE_CTL_TILED_Y;
case I915_FORMAT_MOD_Y_TILED_CCS:
+ case I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC:
return PLANE_CTL_TILED_Y |
PLANE_CTL_RENDER_DECOMPRESSION_ENABLE;
case I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS:
return PLANE_CTL_TILED_Y |
@@ -14539,6 +14568,15 @@ static int intel_plane_pin_fb(struct intel_plane_state
*plane_state)
plane_state->vma = vma;
+ if (fb->modifier == I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC) {
+ u32 *ccaddr =
kmap_atomic(i915_gem_object_get_page(intel_fb_obj(fb),
+
fb->offsets[2] >> PAGE_SHIFT));
+
+ plane_state->ccval = ((u64)*(ccaddr + CC_VAL_HIGHER_OFFSET) <<
32)
+ | *(ccaddr + CC_VAL_LOWER_OFFSET);
+ kunmap_atomic(ccaddr);
+ }
+
return 0;
}
diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h
b/drivers/gpu/drm/i915/display/intel_display_types.h
index 60a040c39d97..58772a625f2e 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -579,6 +579,9 @@ struct intel_plane_state {
u32 slave;
struct drm_intel_sprite_colorkey ckey;
+
+ /* Clear Color Value */
+ u64 ccval;
};
struct intel_initial_plane_config {
diff --git a/drivers/gpu/drm/i915/display/intel_sprite.c
b/drivers/gpu/drm/i915/display/intel_sprite.c
index ad28ee94c968..fae624887156 100644
--- a/drivers/gpu/drm/i915/display/intel_sprite.c
+++ b/drivers/gpu/drm/i915/display/intel_sprite.c
@@ -549,6 +549,7 @@ skl_program_plane(struct intel_plane *plane,
u32 plane_color_ctl = 0;
unsigned long irqflags;
u32 keymsk, keymax;
+ u64 ccval = plane_state->ccval;
plane_ctl |= skl_plane_ctl_crtc(crtc_state);
@@ -609,6 +610,10 @@ skl_program_plane(struct intel_plane *plane,
if (fb->format->is_yuv && icl_is_hdr_plane(dev_priv, plane_id))
icl_program_input_csc(plane, crtc_state, plane_state);
+ if (fb->modifier == I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC)
+ intel_uncore_write64_fw(&dev_priv->uncore,
+ PLANE_CC_VAL(pipe, plane_id), ccval);
+
skl_write_plane_wm(plane, crtc_state);
I915_WRITE_FW(PLANE_KEYVAL(pipe, plane_id), key->min_value);
@@ -1738,7 +1743,8 @@ static int skl_plane_check_fb(const struct
intel_crtc_state *crtc_state,
fb->modifier == I915_FORMAT_MOD_Y_TILED_CCS ||
fb->modifier == I915_FORMAT_MOD_Yf_TILED_CCS ||
fb->modifier == I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS ||
- fb->modifier == I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS)) {
+ fb->modifier == I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS ||
+ fb->modifier == I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC)) {
DRM_DEBUG_KMS("Y/Yf tiling not supported in IF-ID mode\n");
return -EINVAL;
}
@@ -2153,6 +2159,7 @@ static const u64 skl_plane_format_modifiers_ccs[] = {
static const u64 gen12_plane_format_modifiers_mc_ccs[] = {
I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS,
I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS,
+ I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC,
I915_FORMAT_MOD_Y_TILED,
I915_FORMAT_MOD_X_TILED,
DRM_FORMAT_MOD_LINEAR,
@@ -2161,6 +2168,7 @@ static const u64 gen12_plane_format_modifiers_mc_ccs[] = {
static const u64 gen12_plane_format_modifiers_rc_ccs[] = {
I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS,
+ I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC,
I915_FORMAT_MOD_Y_TILED,
I915_FORMAT_MOD_X_TILED,
DRM_FORMAT_MOD_LINEAR,
@@ -2334,6 +2342,7 @@ static bool gen12_plane_format_mod_supported(struct
drm_plane *_plane,
case I915_FORMAT_MOD_X_TILED:
case I915_FORMAT_MOD_Y_TILED:
case I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS:
+ case I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC:
break;
default:
return false;
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 65a1f59c3170..a68c75db5653 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -6729,6 +6729,8 @@ enum {
#define _PLANE_KEYMAX_1_A 0x701a0
#define _PLANE_KEYMAX_2_A 0x702a0
#define PLANE_KEYMAX_ALPHA(a) ((a) << 24)
+#define _PLANE_CC_VAL_1_A 0x701b4
+#define _PLANE_CC_VAL_2_A 0x702b4
#define _PLANE_AUX_DIST_1_A 0x701c0
#define _PLANE_AUX_DIST_2_A 0x702c0
#define _PLANE_AUX_OFFSET_1_A 0x701c4
@@ -6768,6 +6770,16 @@ enum {
#define _PLANE_NV12_BUF_CFG_1_A 0x70278
#define _PLANE_NV12_BUF_CFG_2_A 0x70378
+#define _PLANE_CC_VAL_1_B 0x711b4
+#define _PLANE_CC_VAL_2_B 0x712b4
+#define _PLANE_CC_VAL_1(pipe) _PIPE(pipe, _PLANE_CC_VAL_1_A,
_PLANE_CC_VAL_1_B)
+#define _PLANE_CC_VAL_2(pipe) _PIPE(pipe, _PLANE_CC_VAL_2_A,
_PLANE_CC_VAL_2_B)
+#define PLANE_CC_VAL(pipe, plane) \
+ _MMIO_PLANE(plane, _PLANE_CC_VAL_1(pipe), _PLANE_CC_VAL_2(pipe))
+
+#define CC_VAL_LOWER_OFFSET 4
+#define CC_VAL_HIGHER_OFFSET 5
+
/* Input CSC Register Definitions */
#define _PLANE_INPUT_CSC_RY_GY_1_A 0x701E0
#define _PLANE_INPUT_CSC_RY_GY_2_A 0x702E0
--
2.20.1
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