From patchwork Thu Nov 7 11:32:40 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Kandpal, Suraj" X-Patchwork-Id: 13866232 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id EC7C5D43349 for ; Thu, 7 Nov 2024 11:32:54 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 96C6310E806; Thu, 7 Nov 2024 11:32:54 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="eatBtcpg"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.18]) by gabe.freedesktop.org (Postfix) with ESMTPS id A67EA10E806; Thu, 7 Nov 2024 11:32:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1730979174; x=1762515174; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=URCCoCJtMS1GSdi5drU05RHYAzls2m6y4/qERNn2Qlk=; b=eatBtcpg3WvvO9fNL2KDnOcv8ENdkkBfdzBdsyiXVJtmIZkDJyOHmlSI rzETdVqFgoWb/QNWSMPoikrXjJ6u7zUVmt+a42TnXTf6+3Mh1YyqS7jQG +9hXCmReriDl4IyeqaGKWJVHzTFXGBqAEIenPUXF/Op/63yBNZbVV/1G9 gJUI6v7CQAgreMNXBhfcKlTBhJAgmgQbtlipgr1hg9xrQLijQT0Ll+A/1 ZC4AYAkXCqrEtQ8MBwvDr+g0O5tOyVrbE0Hk9w+cH3Fnscb4KAD3nS+V8 9bfkfIm/TW2zD2RfycDa08bWYztGWl4b24ucjBWjfGlPjwhUS20YOcRL1 w==; X-CSE-ConnectionGUID: /v0Ro7WITQyl3ttYq9zSBQ== X-CSE-MsgGUID: o/KBy4V2SKqYWo3Hml9UEg== X-IronPort-AV: E=McAfee;i="6700,10204,11222"; a="30989772" X-IronPort-AV: E=Sophos;i="6.11,199,1725346800"; d="scan'208";a="30989772" Received: from fmviesa001.fm.intel.com ([10.60.135.141]) by orvoesa110.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Nov 2024 03:32:53 -0800 X-CSE-ConnectionGUID: aMXjSg0mTMGeDY61n4RROQ== X-CSE-MsgGUID: hnZ4PsO3SyCh/RD+8ooZ+w== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.11,265,1725346800"; d="scan'208";a="115876316" Received: from kandpal-x299-ud4-pro.iind.intel.com ([10.190.239.10]) by fmviesa001.fm.intel.com with ESMTP; 07 Nov 2024 03:32:52 -0800 From: Suraj Kandpal To: intel-xe@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Cc: vinod.govindapillai@intel.com, Suraj Kandpal Subject: [PATCH] drm/i914/watermark: Modify latency programmed into PKG_C_LATENCY Date: Thu, 7 Nov 2024 17:02:40 +0530 Message-Id: <20241107113240.887316-1-suraj.kandpal@intel.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Increase the latency programmed into PKG_C_LATENCY latency to be a multiple of line time which is written into WM_LINETIME. WA: 22020299601 Signed-off-by: Suraj Kandpal Signed-off-by: Suraj Kandpal --- drivers/gpu/drm/i915/display/skl_watermark.c | 26 ++++++++++++++------ 1 file changed, 18 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/i915/display/skl_watermark.c b/drivers/gpu/drm/i915/display/skl_watermark.c index d3bbf335c749..856b20a683fd 100644 --- a/drivers/gpu/drm/i915/display/skl_watermark.c +++ b/drivers/gpu/drm/i915/display/skl_watermark.c @@ -2848,9 +2848,11 @@ static int skl_wm_add_affected_planes(struct intel_atomic_state *state, * Program PKG_C_LATENCY Added Wake Time = 0 */ static void -skl_program_dpkgc_latency(struct drm_i915_private *i915, bool enable_dpkgc) +skl_program_dpkgc_latency(struct drm_i915_private *i915, + bool enable_dpkgc, + u32 max_linetime) { - u32 max_latency = 0; + u32 adjusted_latency = 0; u32 clear = 0, val = 0; u32 added_wake_time = 0; @@ -2858,18 +2860,23 @@ skl_program_dpkgc_latency(struct drm_i915_private *i915, bool enable_dpkgc) return; if (enable_dpkgc) { - max_latency = skl_watermark_max_latency(i915, 1); - if (max_latency == 0) - max_latency = LNL_PKG_C_LATENCY_MASK; + adjusted_latency = skl_watermark_max_latency(i915, 1); + if (adjusted_latency == 0) + adjusted_latency = LNL_PKG_C_LATENCY_MASK; + + /* Wa_22020299601 */ + if (IS_DISPLAY_VERx100(i915, 2000, 3000)) + adjusted_latency = max_linetime * + DIV_ROUND_UP(adjusted_latency, max_linetime); added_wake_time = DSB_EXE_TIME + i915->display.sagv.block_time_us; } else { - max_latency = LNL_PKG_C_LATENCY_MASK; + adjusted_latency = LNL_PKG_C_LATENCY_MASK; added_wake_time = 0; } clear |= LNL_ADDED_WAKE_TIME_MASK | LNL_PKG_C_LATENCY_MASK; - val |= REG_FIELD_PREP(LNL_PKG_C_LATENCY_MASK, max_latency); + val |= REG_FIELD_PREP(LNL_PKG_C_LATENCY_MASK, adjusted_latency); val |= REG_FIELD_PREP(LNL_ADDED_WAKE_TIME_MASK, added_wake_time); intel_uncore_rmw(&i915->uncore, LNL_PKG_C_LATENCY, clear, val); @@ -2882,6 +2889,7 @@ skl_compute_wm(struct intel_atomic_state *state) struct intel_crtc_state __maybe_unused *new_crtc_state; int ret, i; bool enable_dpkgc = false; + u32 max_linetime; for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) { ret = skl_build_pipe_wm(state, crtc); @@ -2911,9 +2919,11 @@ skl_compute_wm(struct intel_atomic_state *state) new_crtc_state->vrr.vmin == new_crtc_state->vrr.flipline) || !new_crtc_state->vrr.enable) enable_dpkgc = true; + + max_linetime = max(new_crtc_state->linetime, max_linetime); } - skl_program_dpkgc_latency(to_i915(state->base.dev), enable_dpkgc); + skl_program_dpkgc_latency(to_i915(state->base.dev), enable_dpkgc, max_linetime); skl_print_wm_changes(state);