From patchwork Mon Jul 20 11:31:12 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Karthik B S X-Patchwork-Id: 11673597 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 077B460D for ; Mon, 20 Jul 2020 11:54:30 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id E47AB2070A for ; Mon, 20 Jul 2020 11:54:29 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E47AB2070A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id CE6D96E38A; Mon, 20 Jul 2020 11:54:25 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by gabe.freedesktop.org (Postfix) with ESMTPS id 82B3A6E37F; Mon, 20 Jul 2020 11:54:24 +0000 (UTC) IronPort-SDR: JhMH1A6O7//qjI5edXB8AxsTWYLORFThpE2GcIVv2B8Iy6n3SYGlDeucu6l/H7AGvV7H0dsMLQ cov0QpQlqshA== X-IronPort-AV: E=McAfee;i="6000,8403,9687"; a="149048185" X-IronPort-AV: E=Sophos;i="5.75,374,1589266800"; d="scan'208";a="149048185" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Jul 2020 04:54:23 -0700 IronPort-SDR: 5sgpX0E+b6Osza77XdCFk8oDkUAVRXp1ym3rt1jYjozczqgDUqQ2R9VuvZK1v47qCuPsYluuPx Yg1dWNHQwp+g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.75,374,1589266800"; d="scan'208";a="431586698" Received: from unknown (HELO karthik-2012-Client-Platform.iind.intel.com) ([10.223.74.217]) by orsmga004.jf.intel.com with ESMTP; 20 Jul 2020 04:54:20 -0700 From: Karthik B S To: intel-gfx@lists.freedesktop.org Subject: [PATCH v5 0/5] Asynchronous flip implementation for i915 Date: Mon, 20 Jul 2020 17:01:12 +0530 Message-Id: <20200720113117.16131-1-karthik.b.s@intel.com> X-Mailer: git-send-email 2.22.0 MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: paulo.r.zanoni@intel.com, Karthik B S , dri-devel@lists.freedesktop.org, vandita.kulkarni@intel.com, uma.shankar@intel.com, daniel.vetter@intel.com, nicholas.kazlauskas@amd.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Without async flip support in the kernel, fullscreen apps where game resolution is equal to the screen resolution, must perform an extra blit per frame prior to flipping. Asynchronous page flips will also boost the FPS of Mesa benchmarks. v2: -Few patches have been squashed and patches have been shuffled as per the reviews on the previous version. v3: -Few patches have been squashed and patches have been shuffled as per the reviews on the previous version. v4: -Made changes to fix the sequence and time stamp issue as per the comments received on the previous version. -Timestamps are calculated using the flip done time stamp and current timestamp. Here I915_MODE_FLAG_GET_SCANLINE_FROM_TIMESTAMP flag is used for timestamp calculations. -Event is sent from the interrupt handler immediately using this updated timestamps and sequence. -Added more state checks as async flip should only allow change in plane surface address and nothing else should be allowed to change. -Added a separate plane hook for async flip. -Need to find a way to reject fbc enabling if it comes as part of this flip as bspec states that changes to FBC are not allowed. v5: -Fixed the Checkpatch and sparse warnings. Karthik B S (5): drm/i915: Add enable/disable flip done and flip done handler drm/i915: Add support for async flips in I915 drm/i915: Add checks specific to async flips drm/i915: Do not call drm_crtc_arm_vblank_event in async flips drm/i915: Enable async flips in i915 drivers/gpu/drm/i915/display/intel_display.c | 123 +++++++++++++++++++ drivers/gpu/drm/i915/display/intel_sprite.c | 33 ++++- drivers/gpu/drm/i915/i915_irq.c | 83 +++++++++++-- drivers/gpu/drm/i915/i915_irq.h | 2 + drivers/gpu/drm/i915/i915_reg.h | 5 +- 5 files changed, 237 insertions(+), 9 deletions(-)