From nobody Mon Feb 9 22:39:05 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=intel.com ARC-Seal: i=1; a=rsa-sha256; t=1617161018; cv=none; d=zohomail.com; s=zohoarc; b=liqzyuhPyuTaAi6qlw7rIDHgfBbDj9amYQ9ZlhesCa6WB+L31+OcJKkZHAApwsBELoCVBO1pO355ar3LzedZxnszCfWOxsOFYLPrff4dZpCS8Y18zSFv1VRZIjRBIbdiOG0Wr1NQXIj6hYKmipBq3AyQgYXqvNELhG3CF7YuV2I= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1617161018; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=zIc/1GlASao7vzRp6EEJrjncBo47qdLt6vXgwcK5CoY=; b=TsDRDA+wvVMlINFRYiBaEjYZvhtQhqie1DE4juMHiyd7J1kEn98ELwPEXIgCk6/zeHJnPtFbajKjPIdtzbpnSBjc7kzj06ZzOIvg3zEIHS4HLL26CcUCBn4IkuzcXsM40BDWMjqtiIPfRD05SETHf2+1phai2o1Ws66Ya72xgds= ARC-Authentication-Results: i=1; mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1617161018358659.4090628620354; Tue, 30 Mar 2021 20:23:38 -0700 (PDT) Received: from localhost ([::1]:40572 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lRRSC-0004E6-Gk for importer@patchew.org; Tue, 30 Mar 2021 23:23:36 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:36466) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lRRQT-0002Yl-8K for qemu-devel@nongnu.org; Tue, 30 Mar 2021 23:21:49 -0400 Received: from mga18.intel.com ([134.134.136.126]:53070) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lRRQL-00057q-Ml for qemu-devel@nongnu.org; Tue, 30 Mar 2021 23:21:48 -0400 Received: from orsmga008.jf.intel.com ([10.7.209.65]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Mar 2021 20:21:33 -0700 Received: from vkasired-desk2.fm.intel.com ([10.105.128.127]) by orsmga008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Mar 2021 20:21:33 -0700 IronPort-SDR: /WMHXdbo7ES+ou6oY7cZDiUYJ3Emw88Bwr9DkBgMDTzgoj5T4dCBusAh5MEcIW5FKbKRHYsaF7 OP3QhfEaamvA== X-IronPort-AV: E=McAfee;i="6000,8403,9939"; a="179449760" X-IronPort-AV: E=Sophos;i="5.81,291,1610438400"; d="scan'208";a="179449760" IronPort-SDR: xQznw9dCNKkWdS7I4ZPme1FGyAxWilkVYdcI6qR/dI5U2jTROIawDKn7ydIZPUuCHWUKZJYetl RVz3qKhksjAg== X-IronPort-AV: E=Sophos;i="5.81,291,1610438400"; d="scan'208";a="418454105" From: Vivek Kasireddy To: qemu-devel@nongnu.org Subject: [PATCH 01/11] ui: Get the fd associated with udmabuf driver Date: Tue, 30 Mar 2021 20:09:51 -0700 Message-Id: <20210331031001.1564125-2-vivek.kasireddy@intel.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210331031001.1564125-1-vivek.kasireddy@intel.com> References: <20210331031001.1564125-1-vivek.kasireddy@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=134.134.136.126; envelope-from=vivek.kasireddy@intel.com; helo=mga18.intel.com X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Vivek Kasireddy , Gerd Hoffmann Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" Try to open the udmabuf dev node for the first time or return the fd if the device was previously opened. Based-on-patch-by: Gerd Hoffmann Signed-off-by: Vivek Kasireddy --- include/ui/console.h | 3 +++ ui/meson.build | 1 + ui/udmabuf.c | 40 ++++++++++++++++++++++++++++++++++++++++ 3 files changed, 44 insertions(+) create mode 100644 ui/udmabuf.c diff --git a/include/ui/console.h b/include/ui/console.h index ca3c7af6a6..b30b63976a 100644 --- a/include/ui/console.h +++ b/include/ui/console.h @@ -471,4 +471,7 @@ bool vnc_display_reload_certs(const char *id, Error **= errp); /* input.c */ int index_from_key(const char *key, size_t key_length); =20 +/* udmabuf.c */ +int udmabuf_fd(void); + #endif diff --git a/ui/meson.build b/ui/meson.build index e8d3ff41b9..7a709ff548 100644 --- a/ui/meson.build +++ b/ui/meson.build @@ -11,6 +11,7 @@ softmmu_ss.add(files( 'kbd-state.c', 'keymaps.c', 'qemu-pixman.c', + 'udmabuf.c', )) softmmu_ss.add([spice_headers, files('spice-module.c')]) =20 diff --git a/ui/udmabuf.c b/ui/udmabuf.c new file mode 100644 index 0000000000..e6234fd86f --- /dev/null +++ b/ui/udmabuf.c @@ -0,0 +1,40 @@ +/* + * udmabuf helper functions. + * + * This work is licensed under the terms of the GNU GPL, version 2 or late= r. + * See the COPYING file in the top-level directory. + */ +#include "qemu/osdep.h" +#include "qapi/error.h" +#include "ui/console.h" + +#ifdef CONFIG_LINUX + +#include +#include + +int udmabuf_fd(void) +{ + static bool first =3D true; + static int udmabuf; + + if (!first) { + return udmabuf; + } + first =3D false; + + udmabuf =3D open("/dev/udmabuf", O_RDWR); + if (udmabuf < 0) { + warn_report("open /dev/udmabuf: %s", strerror(errno)); + } + return udmabuf; +} + +#else + +int udmabuf_fd(void) +{ + return -1; +} + +#endif --=20 2.26.2