From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B2DC1C35240 for ; Thu, 23 Jan 2020 23:59:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8291E206D3 for ; Thu, 23 Jan 2020 23:59:45 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=brkho-com.20150623.gappssmtp.com header.i=@brkho-com.20150623.gappssmtp.com header.b="SDDE6p5U" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729999AbgAWX7o (ORCPT ); Thu, 23 Jan 2020 18:59:44 -0500 Received: from mail-yb1-f228.google.com ([209.85.219.228]:43767 "EHLO mail-yb1-f228.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729149AbgAWX7o (ORCPT ); Thu, 23 Jan 2020 18:59:44 -0500 Received: by mail-yb1-f228.google.com with SMTP id k15so57447ybd.10 for ; Thu, 23 Jan 2020 15:59:42 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=brkho-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=zvp91oDfTO5JEbLl+0vB/VWGoX6Fo09EsCttVL/w5so=; b=SDDE6p5Uv0saoG5w8al+BsZzuZhQZRkbj39+0ueJ6gRLYtLLRHuMi7/EE5OYsH+YtA d4aQvHCI+Kd7+ucIl9TW6RVMTjnemxZAl5zJumSYpiZ8meniokDffXmHsmee7aRvjzLD 5G6eMaG5lDT9O3l0aWAdBjh8kQgoOE5tQ/7AMouPfHQhFdtStWzVlHADBtYyizomkne8 t9q0j0mJLniJLEvM19Ikh9ywLmee4eNzvwqntVlZiL8Uap6KqjV5mEGE4ieaIs6cRwjP 7MNIPEssZq8qpBYJ1Eqydj7SUjGSrHWZKTFTHYJ6VTHO3diohnzpmX5aB2HaMM/ayvlX lmjw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=zvp91oDfTO5JEbLl+0vB/VWGoX6Fo09EsCttVL/w5so=; b=OtU+t/f+0w7CI/lnFEcf+8Jh0nvwxGW3upAaKkmDRcNFQLgjqhvqNKLtbV0ZbSxpSf xWEcmIOwqHMCJwZxjdplBpHQSM06G7TBJKk0AM074uC7l6pEF8NdU5cvQpmRBJTYldIO S6gGJnQmiEvPW2f7NuxmrSTte6fL8qrUmnXzz1Q07nnFpdYx/3nO13m81Q7+x+XY5Ryo r91EwPu99SSijmOORH7mmhd2NJNz3JXSj/KNQ4BAPGtfMpSoi23alE7yHsg92t+oUh5S TNDa4F7dujlboZPkwKLYyZ8TJPVyTANGv3UYz3tYRcVoPIrZLPD7UIikFTjzZgVB6+cH psqQ== X-Gm-Message-State: APjAAAXF3cJ8vqdTLg5E+I545nkDd+WKEIojdlV/HtPRrxyCqet950zG k+EGlvZ05u7a4xBTSTrk9AuqkiI9f62Y3lxwamW7654CKaWiRg== X-Google-Smtp-Source: APXvYqwFRd5SEYNa4twj8KbvI5uBQGYGOmRAxdq9oHZ+fGUwIuMk48HZYtAsYd0J8WDqs8Vvx3SvxKiQnnq/ X-Received: by 2002:a25:cf08:: with SMTP id f8mr328295ybg.304.1579823981860; Thu, 23 Jan 2020 15:59:41 -0800 (PST) Received: from hob1.nyc.corp.google.com ([100.118.32.120]) by smtp-relay.gmail.com with ESMTPS id i82sm591239ywg.11.2020.01.23.15.59.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 23 Jan 2020 15:59:41 -0800 (PST) X-Relaying-Domain: brkho.com From: Brian Ho To: freedreno@lists.freedesktop.org Cc: hoegsberg@chromium.org, robdclark@chromium.org, Brian Ho , Rob Clark , Sean Paul , David Airlie , Daniel Vetter , linux-arm-msm@vger.kernel.org (open list:DRM DRIVER FOR MSM ADRENO GPU), dri-devel@lists.freedesktop.org (open list:DRM DRIVER FOR MSM ADRENO GPU), linux-kernel@vger.kernel.org (open list) Subject: [PATCH v3 1/2] drm/msm: Add a GPU-wide wait queue Date: Thu, 23 Jan 2020 18:57:37 -0500 Message-Id: <20200123235738.48182-2-brian@brkho.com> X-Mailer: git-send-email 2.25.0.341.g760bfbb309-goog In-Reply-To: <20200123235738.48182-1-brian@brkho.com> References: <20200123235738.48182-1-brian@brkho.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This wait queue is signaled on all IRQs for a given GPU and will be used as part of the new MSM_WAIT_IOVA ioctl so userspace can sleep until the value at a given iova reaches a certain condition. Signed-off-by: Brian Ho --- drivers/gpu/drm/msm/msm_gpu.c | 4 ++++ drivers/gpu/drm/msm/msm_gpu.h | 3 +++ 2 files changed, 7 insertions(+) diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c index a052364a5d74..d7310c1336e5 100644 --- a/drivers/gpu/drm/msm/msm_gpu.c +++ b/drivers/gpu/drm/msm/msm_gpu.c @@ -779,6 +779,8 @@ void msm_gpu_submit(struct msm_gpu *gpu, struct msm_gem_submit *submit, static irqreturn_t irq_handler(int irq, void *data) { struct msm_gpu *gpu = data; + wake_up_all(&gpu->event); + return gpu->funcs->irq(gpu); } @@ -871,6 +873,8 @@ int msm_gpu_init(struct drm_device *drm, struct platform_device *pdev, spin_lock_init(&gpu->perf_lock); + init_waitqueue_head(&gpu->event); + /* Map registers: */ gpu->mmio = msm_ioremap(pdev, config->ioname, name); diff --git a/drivers/gpu/drm/msm/msm_gpu.h b/drivers/gpu/drm/msm/msm_gpu.h index ab8f0f9c9dc8..60562f065dbc 100644 --- a/drivers/gpu/drm/msm/msm_gpu.h +++ b/drivers/gpu/drm/msm/msm_gpu.h @@ -104,6 +104,9 @@ struct msm_gpu { struct msm_gem_address_space *aspace; + /* GPU-wide wait queue that is signaled on all IRQs */ + wait_queue_head_t event; + /* Power Control: */ struct regulator *gpu_reg, *gpu_cx; struct clk_bulk_data *grp_clks; -- 2.25.0.341.g760bfbb309-goog