From df8ee19087d24ca00c4f76b3a28c793b661b4b1e Mon Sep 17 00:00:00 2001 From: Mahesh Kumar Date: Tue, 30 Jan 2018 11:49:11 -0200 Subject: [PATCH] drm/i915/icl: Do not fix dbuf block size to 512 GEN9/10 had fixed DBuf block size of 512. Dbuf block size is not a fixed number anymore in GEN11, it varies according to bits per pixel and tiling. If 8bpp & Yf-tile surface, block size = 256 else block size = 512 This patch addresses the same. v2 (from Paulo): - Make it compile. - Fix a few coding style issues. v3: - Rebase on top of upstream patches v4 (from Paulo): - Bikeshed if statements (James). Reviewed-by: Paulo Zanoni Reviewed-by: James Ausmus Signed-off-by: Mahesh Kumar Signed-off-by: Paulo Zanoni Link: https://patchwork.freedesktop.org/patch/msgid/20180130134918.32283-3-paulo.r.zanoni@intel.com --- drivers/gpu/drm/i915/i915_drv.h | 1 + drivers/gpu/drm/i915/intel_pm.c | 24 +++++++++++++++++------- 2 files changed, 18 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 2d855faac708..21403be6ee0c 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -1461,6 +1461,7 @@ struct skl_wm_params { uint_fixed_16_16_t plane_blocks_per_line; uint_fixed_16_16_t y_tile_minimum; uint32_t linetime_us; + uint32_t dbuf_block_size; }; /* diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 11aac65d1543..985642cf1c9a 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -4312,7 +4312,7 @@ skl_allocate_pipe_ddb(struct intel_crtc_state *cstate, */ static uint_fixed_16_16_t skl_wm_method1(const struct drm_i915_private *dev_priv, uint32_t pixel_rate, - uint8_t cpp, uint32_t latency) + uint8_t cpp, uint32_t latency, uint32_t dbuf_block_size) { uint32_t wm_intermediate_val; uint_fixed_16_16_t ret; @@ -4321,7 +4321,7 @@ skl_wm_method1(const struct drm_i915_private *dev_priv, uint32_t pixel_rate, return FP_16_16_MAX; wm_intermediate_val = latency * pixel_rate * cpp; - ret = div_fixed16(wm_intermediate_val, 1000 * 512); + ret = div_fixed16(wm_intermediate_val, 1000 * dbuf_block_size); if (INTEL_GEN(dev_priv) >= 10) ret = add_fixed16_u32(ret, 1); @@ -4431,6 +4431,12 @@ skl_compute_plane_wm_params(const struct drm_i915_private *dev_priv, wp->plane_pixel_rate = skl_adjusted_plane_pixel_rate(cstate, intel_pstate); + if (INTEL_GEN(dev_priv) >= 11 && + fb->modifier == I915_FORMAT_MOD_Yf_TILED && wp->cpp == 8) + wp->dbuf_block_size = 256; + else + wp->dbuf_block_size = 512; + if (drm_rotation_90_or_270(pstate->rotation)) { switch (wp->cpp) { @@ -4457,7 +4463,8 @@ skl_compute_plane_wm_params(const struct drm_i915_private *dev_priv, wp->plane_bytes_per_line = wp->width * wp->cpp; if (wp->y_tiled) { interm_pbpl = DIV_ROUND_UP(wp->plane_bytes_per_line * - wp->y_min_scanlines, 512); + wp->y_min_scanlines, + wp->dbuf_block_size); if (INTEL_GEN(dev_priv) >= 10) interm_pbpl++; @@ -4465,10 +4472,12 @@ skl_compute_plane_wm_params(const struct drm_i915_private *dev_priv, wp->plane_blocks_per_line = div_fixed16(interm_pbpl, wp->y_min_scanlines); } else if (wp->x_tiled && IS_GEN9(dev_priv)) { - interm_pbpl = DIV_ROUND_UP(wp->plane_bytes_per_line, 512); + interm_pbpl = DIV_ROUND_UP(wp->plane_bytes_per_line, + wp->dbuf_block_size); wp->plane_blocks_per_line = u32_to_fixed16(interm_pbpl); } else { - interm_pbpl = DIV_ROUND_UP(wp->plane_bytes_per_line, 512) + 1; + interm_pbpl = DIV_ROUND_UP(wp->plane_bytes_per_line, + wp->dbuf_block_size) + 1; wp->plane_blocks_per_line = u32_to_fixed16(interm_pbpl); } @@ -4515,7 +4524,7 @@ static int skl_compute_plane_wm(const struct drm_i915_private *dev_priv, latency += 15; method1 = skl_wm_method1(dev_priv, wp->plane_pixel_rate, - wp->cpp, latency); + wp->cpp, latency, wp->dbuf_block_size); method2 = skl_wm_method2(wp->plane_pixel_rate, cstate->base.adjusted_mode.crtc_htotal, latency, @@ -4525,7 +4534,8 @@ static int skl_compute_plane_wm(const struct drm_i915_private *dev_priv, selected_result = max_fixed16(method2, wp->y_tile_minimum); } else { if ((wp->cpp * cstate->base.adjusted_mode.crtc_htotal / - 512 < 1) && (wp->plane_bytes_per_line / 512 < 1)) + wp->dbuf_block_size < 1) && + (wp->plane_bytes_per_line / wp->dbuf_block_size < 1)) selected_result = method2; else if (ddb_allocation >= fixed16_to_u32_round_up(wp->plane_blocks_per_line)) -- 2.30.2