From patchwork Fri Sep 15 08:28:22 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jocelyn Falempe X-Patchwork-Id: 13386552 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 D60A9EE6447 for ; Fri, 15 Sep 2023 08:35:47 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 099AA10E5CC; Fri, 15 Sep 2023 08:35:47 +0000 (UTC) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by gabe.freedesktop.org (Postfix) with ESMTPS id 8DD1610E5CC for ; Fri, 15 Sep 2023 08:35:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1694766941; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=HXbIVLwa/2TSsXtVZlcjZuTAoEj/aPgzjjwzUOVSS0M=; b=gRobihBhjWFVZPyS6uoZRJgZXg2tpgwAwyKJYNrl7fNRuNe/6QTMvVv7BcZ45CZ38cXu5v WrBqmjLCOqFD9j+L9lrfmg2hM6fDTT6Ft6vdrV/fQdHmHbE4hQdsJGUZYlTxrav7B8rboi XIe2n6upF95tSO5IPR6s+ZXqu+XqUmY= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-551-waxRs4pMOOqvhb5ffAHm4w-1; Fri, 15 Sep 2023 04:35:38 -0400 X-MC-Unique: waxRs4pMOOqvhb5ffAHm4w-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.rdu2.redhat.com [10.11.54.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id E510685A5BA; Fri, 15 Sep 2023 08:35:37 +0000 (UTC) Received: from hydra.redhat.com (unknown [10.39.194.173]) by smtp.corp.redhat.com (Postfix) with ESMTP id 83EDB40C2070; Fri, 15 Sep 2023 08:35:36 +0000 (UTC) From: Jocelyn Falempe To: dri-devel@lists.freedesktop.org, tzimmermann@suse.de, airlied@redhat.com, maarten.lankhorst@linux.intel.com, mripard@kernel.org, daniel@ffwll.ch, javierm@redhat.com, bluescreen_avenger@verizon.net Subject: [PATCH v2 2/2] drm/simpledrm: Add drm_panic support Date: Fri, 15 Sep 2023 10:28:22 +0200 Message-ID: <20230915083307.1185571-3-jfalempe@redhat.com> In-Reply-To: <20230915083307.1185571-1-jfalempe@redhat.com> References: <20230915083307.1185571-1-jfalempe@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.1 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com 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: Jocelyn Falempe Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Add support for the drm_panic module, which displays a user-friendly message to the screen when a kernel panic occurs. Signed-off-by: Jocelyn Falempe --- drivers/gpu/drm/tiny/simpledrm.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/gpu/drm/tiny/simpledrm.c b/drivers/gpu/drm/tiny/simpledrm.c index 25e11ef11c4c..f0454b58ead3 100644 --- a/drivers/gpu/drm/tiny/simpledrm.c +++ b/drivers/gpu/drm/tiny/simpledrm.c @@ -23,6 +23,7 @@ #include #include #include +#include #include #include @@ -838,10 +839,24 @@ static struct simpledrm_device *simpledrm_device_create(struct drm_driver *drv, return ERR_PTR(ret); drm_mode_config_reset(dev); + drm_panic_register(dev); return sdev; } +static int simpledrm_get_scanout_buffer(struct drm_device *dev, + struct drm_scanout_buffer *sb) +{ + struct simpledrm_device *sdev = simpledrm_device_of_dev(dev); + + sb->width = sdev->mode.hdisplay; + sb->height = sdev->mode.vdisplay; + sb->pitch = sdev->pitch; + sb->format = sdev->format; + sb->map = sdev->screen_base; + return 0; +} + /* * DRM driver */ @@ -857,6 +872,7 @@ static struct drm_driver simpledrm_driver = { .minor = DRIVER_MINOR, .driver_features = DRIVER_ATOMIC | DRIVER_GEM | DRIVER_MODESET, .fops = &simpledrm_fops, + .get_scanout_buffer = simpledrm_get_scanout_buffer, }; /* @@ -894,6 +910,7 @@ static int simpledrm_remove(struct platform_device *pdev) struct drm_device *dev = &sdev->dev; drm_dev_unplug(dev); + drm_panic_unregister(dev); return 0; }