From nobody Thu Jul 3 15:43:22 2025 Delivered-To: importer2@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+importer2=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=intel.com ARC-Seal: i=1; a=rsa-sha256; t=1621896470; cv=none; d=zohomail.com; s=zohoarc; b=VcJjg5G6XYwH1HQcSBSSG/rlYklvOJCBod/qCXkykhLbiUYhRU5y3aPeSk55N4p4O8Z875iLpxbDInh37xsYFqCF9oMvOcPbP1gVic3tBhpK3xFah337c4xVYAm8dOoiIPjLpVlrux4pVLD9nUTloyZXaLdqPgdGUKml1/3RMV0= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1621896470; 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=2AqG+GvM8JtqXg2C9bNiKFSb9sfmDjzE4oXi0Ni1VC4=; b=Ip1RSWlmInPKIQDFYTM8Zfg0bCkFJwiQ0v3Z9azxSNom8FPHYBFN4KE8wX8XZzVDQ63UPlXxGG0//85CfQ0p/5ZMJoKdWDjhkgPX/8m9if13HCmCuT/OKI2mmTqPVmuH8QOwG1sRe6hFNtpBYBbVaBaJRYix5QWhWNY90dWZDR8= 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+importer2=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 1621896470768551.2795877529443; Mon, 24 May 2021 15:47:50 -0700 (PDT) Received: from localhost ([::1]:37032 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1llJMT-0004zN-Nc for importer2@patchew.org; Mon, 24 May 2021 18:47:49 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:33408) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1llJII-0006n0-Cy for qemu-devel@nongnu.org; Mon, 24 May 2021 18:43:30 -0400 Received: from mga05.intel.com ([192.55.52.43]:11755) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1llJIF-0006he-Lo for qemu-devel@nongnu.org; Mon, 24 May 2021 18:43:30 -0400 Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 May 2021 15:43:17 -0700 Received: from vkasired-desk2.fm.intel.com ([10.105.128.127]) by fmsmga001-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 May 2021 15:43:17 -0700 IronPort-SDR: r0TtxfnT6d/v1qQqDvQX5x/rQvjdJOsz129+K34UDJ/eqRhh9ywOpD7zMwTrqjR8zy9PJJcaao WDvZBkbWFWsw== X-IronPort-AV: E=McAfee;i="6200,9189,9994"; a="287620898" X-IronPort-AV: E=Sophos;i="5.82,327,1613462400"; d="scan'208";a="287620898" IronPort-SDR: 3293xso1Hw5pRsqS4Ctji5A91C7qF6QMx7ALShJLRkn+RBNDcC2JCJH9elZp8yh5ufHAB8BlwN jYK4rZ7LzedQ== X-IronPort-AV: E=Sophos;i="5.82,327,1613462400"; d="scan'208";a="546246741" From: Vivek Kasireddy To: qemu-devel@nongnu.org Subject: [PATCH v6 01/13] ui: Get the fd associated with udmabuf driver Date: Mon, 24 May 2021 15:30:51 -0700 Message-Id: <20210524223103.922910-2-vivek.kasireddy@intel.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210524223103.922910-1-vivek.kasireddy@intel.com> References: <20210524223103.922910-1-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+importer2=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=192.55.52.43; envelope-from=vivek.kasireddy@intel.com; helo=mga05.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+importer2=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 Cc: 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 b5aed14886..a3a187d633 100644 --- a/ui/meson.build +++ b/ui/meson.build @@ -12,6 +12,7 @@ softmmu_ss.add(files( 'kbd-state.c', 'keymaps.c', 'qemu-pixman.c', + 'udmabuf.c', )) softmmu_ss.add([spice_headers, files('spice-module.c')]) softmmu_ss.add(when: spice_protocol, if_true: files('vdagent.c')) 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 2.30.2