Received: by 2002:a05:6358:1087:b0:cb:c9d3:cd90 with SMTP id j7csp4936380rwi; Mon, 17 Oct 2022 12:59:05 -0700 (PDT) X-Google-Smtp-Source: AMsMyM4xfevtjl/aiCN57XC7KkrkOL4bVV6QidhHbISr/emsznjJzOZexj3h201tvN6bVhAB+ccG X-Received: by 2002:a05:6a00:1390:b0:562:e518:9920 with SMTP id t16-20020a056a00139000b00562e5189920mr14408642pfg.54.1666036745122; Mon, 17 Oct 2022 12:59:05 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1666036745; cv=none; d=google.com; s=arc-20160816; b=E/NToTJj2xJSawS/Y9riVRPGUWUayfKHFuxwxXoXBGZo9IIyWPYIv1v306qIzSgvTA +hMpWmOj5TIsLp60y+FnZjP3n38tKiVReMpgLKHsaYWVk+0fCALUOcBKnj6D9Ht0zfr6 pHAaYfo99vJ++b4VDyD8wQz1RPSrOlPAtEqmibo28RmYxbFCCgUvdOKQzxyc3wL6HHlZ +Xdlcd4+jbR9BKZgpZiWWhXVkQEFzHIyTrTGrzTrK80SQTkPx7eWulnPiplRpzp3K/0l LROB4LfO7ZGkiKejb/bxsZdjo/X8+NGS/NVjkx/WZ808iFMcm5lIxhRU5TcyJuJrmnAN kD/A== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:in-reply-to:from :references:cc:to:content-language:subject:user-agent:mime-version :date:message-id:dkim-signature; bh=rsSRW+G2rxl1qTZ7eXeAY8au2TKGPXJ9C9uJXfGontk=; b=ODTx0pxiLIyv9Ej7m6r2siCnCfJjBTREujTWsFaaZSOCLeZQwZMPC/+IJiggHHOZUX UFXtV26aTnB8ZeuGUxIaNIm4Lni+QCHCoSItWKWtmOZ6Uqyn6T5XSY8lhMhBtGyxoAvO ngLKAucNGJ2jK9e/RKqW+a9nxiq6cK5DIdTStuJ69ihk4Uejqjx4OM6/pwRv1JEnFvUt Wxug9+af9m8ZuSBSo5g8qwVwTF9YwmeVGX4rjBXbGXxUxJtUXY8GwHQUGknVnMUNSTwW XxTfZKH7Q9hYfRFmodR+1GcI4tjtE/LK359NZiFW/9HLk176M9KpxuQzHTe7zD0IAwtj 0WJg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@gmail.com header.s=20210112 header.b=f58qD0Y0; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id h2-20020a056a00230200b005429324b543si13441238pfh.360.2022.10.17.12.58.53; Mon, 17 Oct 2022 12:59:05 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20210112 header.b=f58qD0Y0; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230210AbiJQTQJ (ORCPT + 99 others); Mon, 17 Oct 2022 15:16:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42554 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230209AbiJQTQH (ORCPT ); Mon, 17 Oct 2022 15:16:07 -0400 Received: from mail-wm1-x32e.google.com (mail-wm1-x32e.google.com [IPv6:2a00:1450:4864:20::32e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 683AF72FE3 for ; Mon, 17 Oct 2022 12:16:06 -0700 (PDT) Received: by mail-wm1-x32e.google.com with SMTP id y10so9326316wma.0 for ; Mon, 17 Oct 2022 12:16:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=rsSRW+G2rxl1qTZ7eXeAY8au2TKGPXJ9C9uJXfGontk=; b=f58qD0Y01+sBzs963EIbITJY88tl2KpclgURVg6w1N/urjJY33b/Oke7Rt+Zw9sZmZ 1ePeHXmYHS5g/HvxDh3xrgvXl6ASCAkQClaYXnrH+zkpa5LpX7Uy0PEFKF6G9Hvh+bOR TmF2Ny01azJchxKXlbCMA30u89Bf0J4P8Oi6awyklYBgissIA3VueOwscksAl9Y6foEd M3HoYUt0tDLZ0GCkLB03yyHm8AHIRM4zoGTOF8GvaEMLgps2+xjGbm4ZpmZ5/pKnwCMN 4bXZqCT5wJOZifO6OukbnvggvsSFpzwuS/eT7gYFGUBg1jFMrtULhPGlwIcN1nLVGDaA xSCg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=rsSRW+G2rxl1qTZ7eXeAY8au2TKGPXJ9C9uJXfGontk=; b=j+3WpHSVf043Z5LGFiqlpU1UZQIlCvcdf4k3ixWnvKDH0MiJCAtRb1SyaIbiM63nYy qPPoDf87UXplI4389AnxDvYhLxiWSNhWgEm7in4XoLYK/hU4kLXauZrlDCu2nzPCDssf XAlXG0qCBXZDjz6x3JPftEvvIqntwts62t799Vg+pkxqB1ClC74KLTs2C8JJhCs9tOrB 0jBHVCuKTVZEqDFxnZiFO6rN5EShZglSUE+ke0jsYHX4FDc6ZHHvOn0QFPc5ZwpHDkqO lYzdr8WSUEUBNTsosUOJ1RVO8nl7DVf3ffotpFZMYD+RyDF/DWx8wYuE5D4DVBih4RTY C+aA== X-Gm-Message-State: ACrzQf3JTqsHoVBWenlIUj1xl2NLcCSR4A6RmyNqs/hngiOVdHMynuFl SNSBodgyYMgv1Pl/zpVg6Qs= X-Received: by 2002:a05:600c:490f:b0:3c6:2c21:97f6 with SMTP id f15-20020a05600c490f00b003c62c2197f6mr20028931wmp.177.1666034164909; Mon, 17 Oct 2022 12:16:04 -0700 (PDT) Received: from [192.168.2.4] (81-204-249-205.fixed.kpn.net. [81.204.249.205]) by smtp.gmail.com with ESMTPSA id o36-20020a05600c512400b003c6edc05159sm9177519wms.1.2022.10.17.12.16.03 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 17 Oct 2022 12:16:04 -0700 (PDT) Message-ID: <8d884b80-ea5d-6c91-fef0-a093affb3247@gmail.com> Date: Mon, 17 Oct 2022 21:16:03 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.3.0 Subject: Re: [BUG] [PATCH] drm/rockchip: use generic fbdev setup Content-Language: en-US To: John Keeping , Thomas Zimmermann Cc: Heiko Stuebner , dri-devel@lists.freedesktop.org, Sandy Huang , David Airlie , Daniel Vetter , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org References: <20211029115014.264084-1-john@metanate.com> <2220890.jZfb76A358@phil> From: Johan Jonker In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_ENVFROM_END_DIGIT, FREEMAIL_FROM,NICE_REPLY_A,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 10/17/22 21:00, John Keeping wrote: > On Mon, Oct 17, 2022 at 08:30:23PM +0200, Johan Jonker wrote: >> >> >> On 10/17/22 13:29, Heiko Stuebner wrote: >>> Am Montag, 17. Oktober 2022, 12:05:16 CEST schrieb John Keeping: >>>> Hi Johan, >>>> >>>> On Mon, Oct 17, 2022 at 10:11:32AM +0200, Johan Jonker wrote: >>>>> Your patch contribution causes a kernel panic on MK808 with Rockchip rk3066a SoC. >>>>> Would you like to contribute to fix this issue? >>>>> The assumtion that drm_fbdev_generic_setup() does what rockchip_drm_fbdev_init did is not true! >>>>> A revert makes it work again. >>>> >> >>>> It looks like there are 3 different ways to end up with -ENOMEM here, >>>> can you track down whether you're hitting one of the cases in >>>> rockchip_gem_prime_vmap() or if it's the iosys_map_is_null case in >>>> drm_gem_vmap()? >> >> It looks like it comes from rockchip_gem_prime_vmap() second return (2). >> >> >> if (rk_obj->dma_attrs & DMA_ATTR_NO_KERNEL_MAPPING) { >> >> //////////////// >> >> printk("FBDEV rockchip_gem_prime_vmap 2"); >> >> //////////////// >> return -ENOMEM; >> } > > Ah-ha, Heiko was right that this is because the no-iommu path is broken > as a result of switching to the generic fbdev code. > > This patch should fix it, but I wonder if Thomas has any ideas about a > better way to handle this since it feels a bit hacky to special-case the > fb_helper inside the GEM code: The penguin is back on screen. Thanks! > > -- >8 -- > diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c > index 614e97aaac80..da8a69953706 100644 > --- a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c > +++ b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c > @@ -364,9 +364,12 @@ rockchip_gem_create_with_handle(struct drm_file *file_priv, > { > struct rockchip_gem_object *rk_obj; > struct drm_gem_object *obj; > + bool is_framebuffer; > int ret; > > - rk_obj = rockchip_gem_create_object(drm, size, false); > + is_framebuffer = drm->fb_helper && file_priv == drm->fb_helper->client.file; > + > + rk_obj = rockchip_gem_create_object(drm, size, is_framebuffer); > if (IS_ERR(rk_obj)) > return ERR_CAST(rk_obj); > -- 8< --