> -----Original Message-----
> From: Intel-gfx <intel-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> On Behalf Of Imre
> Deak
> Sent: Monday, November 23, 2020 8:27 PM
> To: intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> Cc: Chery, Nanley G <nanley.g.chery@xxxxxxxxx>; Rafael Antognolli
> <rafael.antognolli@xxxxxxxxx>; Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>;
> Pandiyan, Dhinakaran <dhinakaran.pandiyan@xxxxxxxxx>; Syrjala, Ville
> <ville.syrjala@xxxxxxxxx>; Shashank Sharma <shashank.sharma@xxxxxxxxx>
> Subject: [PATCH 2/2] drm/i915/tgl: Add Clear Color support for TGL
> Render Decompression
>
> From: Radhakrishna Sripada <radhakrishna.sripada@xxxxxxxxx>
>
> 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.
> v3: Fix the panic while running kms_cube
> v4: Add alignment check and reuse the comments for
> ge12_ccs_formats(Matt)
> v5: Fix typos and wrap comments(Matt)
> v6:
> - Use format block descriptors to get the subsampling calculations for
> the CCS surface right.
> - Use helpers to convert between main and CCS surfaces.
> - Prevent coordinate checks for the CC surface.
> - Simplify reading CC value from surface map, add description of CC val
> layout.
> - Remove redundant ccval variable from skl_program_plane().
>
> Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@xxxxxxxxx>
> Cc: Ville Syrjala <ville.syrjala@xxxxxxxxx>
> Cc: Shashank Sharma <shashank.sharma@xxxxxxxxx>
> Cc: Rafael Antognolli <rafael.antognolli@xxxxxxxxx>
> Cc: Nanley G Chery <nanley.g.chery@xxxxxxxxx>
> Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> Reviewed-by: Matt Roper <matthew.d.roper@xxxxxxxxx> (v5)
Reviewed-by: Mika Kahola <mika.kahola@xxxxxxxxx> (v6)
> Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@xxxxxxxxx>
> Signed-off-by: Imre Deak <imre.deak@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/display/intel_display.c | 72 +++++++++++++++++--
> .../drm/i915/display/intel_display_types.h | 3 +
> drivers/gpu/drm/i915/display/intel_sprite.c | 10 ++-
> drivers/gpu/drm/i915/i915_reg.h | 9 +++
> 4 files changed, 89 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_display.c
> b/drivers/gpu/drm/i915/display/intel_display.c
> index 595183f7b60f..f190f6f4cdf5 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.c
> +++ b/drivers/gpu/drm/i915/display/intel_display.c
> @@ -1968,8 +1968,8 @@ static bool is_ccs_plane(const struct
> drm_framebuffer *fb, int plane) static bool is_gen12_ccs_modifier(u64
> modifier) {
> return modifier == I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS ||
> + modifier == I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC ||
> modifier == I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS;
> -
> }
>
> static bool is_gen12_ccs_plane(const struct drm_framebuffer *fb, int plane)
> @@ -1977,6 +1977,12 @@ static bool is_gen12_ccs_plane(const struct
> drm_framebuffer *fb, int plane)
> return is_gen12_ccs_modifier(fb->modifier) && is_ccs_plane(fb,
> plane); }
>
> +static bool is_gen12_ccs_cc_plane(const struct drm_framebuffer *fb, int
> +plane) {
> + return fb->modifier ==
> I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC &&
> + plane == 2;
> +}
> +
> static bool is_aux_plane(const struct drm_framebuffer *fb, int plane) {
> if (is_ccs_modifier(fb->modifier))
> @@ -1998,6 +2004,9 @@ static int ccs_to_main_plane(const struct
> drm_framebuffer *fb, int ccs_plane)
> drm_WARN_ON(fb->dev, !is_ccs_modifier(fb->modifier) ||
> ccs_plane < fb->format->num_planes / 2);
>
> + if (is_gen12_ccs_cc_plane(fb, ccs_plane))
> + return 0;
> +
> return ccs_plane - fb->format->num_planes / 2; }
>
> @@ -2048,6 +2057,7 @@ intel_tile_width_bytes(const struct
> drm_framebuffer *fb, int color_plane)
> return 128;
> fallthrough;
> case I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS:
> + case I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC:
> case I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS:
> if (is_ccs_plane(fb, color_plane))
> return 64;
> @@ -2204,6 +2214,7 @@ static unsigned int intel_surf_alignment(const
> struct drm_framebuffer *fb,
> return intel_tile_row_size(fb, color_plane);
> fallthrough;
> 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:
> @@ -2608,6 +2619,7 @@ static unsigned int intel_fb_modifier_to_tiling(u64
> fb_modifier)
> case I915_FORMAT_MOD_Y_TILED:
> case I915_FORMAT_MOD_Y_TILED_CCS:
> case I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS:
> + case I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC:
> case I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS:
> return I915_TILING_Y;
> default:
> @@ -2686,6 +2698,25 @@ static const struct drm_format_info
> gen12_ccs_formats[] = {
> .hsub = 2, .vsub = 2, .is_yuv = true }, };
>
> +/*
> + * Same as gen12_ccs_formats[] above, but with additional surface used
> + * to pass Clear Color information in plane 2 with 64 bits of data.
> + */
> +static const struct drm_format_info gen12_ccs_cc_formats[] = {
> + { .format = DRM_FORMAT_XRGB8888, .depth = 24, .num_planes = 3,
> + .char_per_block = { 4, 1, 0 }, .block_w = { 1, 2, 2 }, .block_h = { 1, 1, 1
> },
> + .hsub = 1, .vsub = 1, },
> + { .format = DRM_FORMAT_XBGR8888, .depth = 24, .num_planes = 3,
> + .char_per_block = { 4, 1, 0 }, .block_w = { 1, 2, 2 }, .block_h = { 1, 1, 1
> },
> + .hsub = 1, .vsub = 1, },
> + { .format = DRM_FORMAT_ARGB8888, .depth = 32, .num_planes = 3,
> + .char_per_block = { 4, 1, 0 }, .block_w = { 1, 2, 2 }, .block_h = { 1, 1, 1
> },
> + .hsub = 1, .vsub = 1, .has_alpha = true },
> + { .format = DRM_FORMAT_ABGR8888, .depth = 32, .num_planes = 3,
> + .char_per_block = { 4, 1, 0 }, .block_w = { 1, 2, 2 }, .block_h = { 1, 1, 1
> },
> + .hsub = 1, .vsub = 1, .has_alpha = true }, };
> +
> static const struct drm_format_info *
> lookup_format_info(const struct drm_format_info formats[],
> int num_formats, u32 format)
> @@ -2714,6 +2745,10 @@ 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;
> }
> @@ -2722,6 +2757,7 @@ intel_get_format_info(const struct
> drm_mode_fb_cmd2 *cmd) bool is_ccs_modifier(u64 modifier) {
> return modifier == I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS ||
> + modifier == I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC ||
> modifier == I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS ||
> modifier == I915_FORMAT_MOD_Y_TILED_CCS ||
> modifier == I915_FORMAT_MOD_Yf_TILED_CCS; @@ -2940,7
> +2976,7 @@ intel_fb_check_ccs_xy(struct drm_framebuffer *fb, int
> ccs_plane, int x, int y)
> int ccs_x, ccs_y;
> int main_x, main_y;
>
> - if (!is_ccs_plane(fb, ccs_plane))
> + if (!is_ccs_plane(fb, ccs_plane) || is_gen12_ccs_cc_plane(fb,
> +ccs_plane))
> return 0;
>
> intel_tile_dims(fb, ccs_plane, &tile_width, &tile_height); @@ -3067,6
> +3103,18 @@ intel_fill_fb_info(struct drm_i915_private *dev_priv,
> int x, y;
> int ret;
>
> + /*
> + * Plane 2 of Render Compression with Clear Color fb
> modifier
> + * is consumed by the driver and not passed to DE. Skip the
> + * arithmetic related to alignment and offset calculation.
> + */
> + if (is_gen12_ccs_cc_plane(fb, i)) {
> + if (IS_ALIGNED(fb->offsets[i], PAGE_SIZE))
> + continue;
> + else
> + return -EINVAL;
> + }
> +
> cpp = fb->format->cpp[i];
> intel_fb_plane_dims(&width, &height, fb, i);
>
> @@ -3991,7 +4039,8 @@ static int skl_check_ccs_aux_surface(struct
> intel_plane_state *plane_state)
> int hsub, vsub;
> int x, y;
>
> - if (!is_ccs_plane(fb, ccs_plane))
> + if (!is_ccs_plane(fb, ccs_plane) ||
> + is_gen12_ccs_cc_plane(fb, ccs_plane))
> continue;
>
> intel_fb_plane_get_subsampling(&main_hsub, &main_vsub,
> fb, @@ -4647,6 +4696,7 @@ 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 |
> @@ -16647,6 +16697,20 @@ 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) {
> + void *map =
> kmap_atomic(i915_gem_object_get_page(intel_fb_obj(fb),
> + fb->offsets[2]
> >> PAGE_SHIFT));
> +
> + /*
> + * The layout of the fast clear color value expected by HW:
> + * - 4 x 4 bytes per-channel value (in surface type specific
> float/int format)
> + * - 8 bytes native color value used by the display
> (converted/written by GPU during
> + * a fast clear operation using the above per-channel values)
> + */
> + plane_state->ccval = *(u64 *)(map + 16);
> + kunmap_atomic(map);
> + }
> +
> return 0;
> }
>
> @@ -17997,7 +18061,7 @@ static int intel_framebuffer_init(struct
> intel_framebuffer *intel_fb,
> goto err;
> }
>
> - if (is_gen12_ccs_plane(fb, i)) {
> + if (is_gen12_ccs_plane(fb, i) && !is_gen12_ccs_cc_plane(fb,
> i)) {
> int ccs_aux_stride = gen12_ccs_aux_stride(fb, i);
>
> if (fb->pitches[i] != ccs_aux_stride) { diff --git
> a/drivers/gpu/drm/i915/display/intel_display_types.h
> b/drivers/gpu/drm/i915/display/intel_display_types.h
> index ce82d654d0f2..a3f4b945a306 100644
> --- a/drivers/gpu/drm/i915/display/intel_display_types.h
> +++ b/drivers/gpu/drm/i915/display/intel_display_types.h
> @@ -604,6 +604,9 @@ struct intel_plane_state {
> u32 planar_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 019a2d6d807a..2dc699e75816 100644
> --- a/drivers/gpu/drm/i915/display/intel_sprite.c
> +++ b/drivers/gpu/drm/i915/display/intel_sprite.c
> @@ -851,6 +851,10 @@ 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),
> plane_state->ccval);
> +
> skl_write_plane_wm(plane, crtc_state);
>
> intel_de_write_fw(dev_priv, PLANE_KEYVAL(pipe, plane_id), @@ -
> 2350,7 +2354,8 @@ 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_dbg_kms(&dev_priv->drm,
> "Y/Yf tiling not supported in IF-ID mode\n");
> return -EINVAL;
> @@ -2840,6 +2845,7 @@ 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,
> @@ -2848,6 +2854,7 @@ 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,
> @@ -3038,6 +3045,7 @@ 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 5375b219cc3b..edabb55d1586
> 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -7070,6 +7070,8 @@ 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
> @@ -7111,6 +7113,13 @@ 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))
> +
> /* Input CSC Register Definitions */
> #define _PLANE_INPUT_CSC_RY_GY_1_A 0x701E0
> #define _PLANE_INPUT_CSC_RY_GY_2_A 0x702E0
> --
> 2.25.1
>
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