From nobody Mon Feb 9 20:12:48 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; 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=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1622126194; cv=none; d=zohomail.com; s=zohoarc; b=WqgKeqq2vE6lHs70N+21Ps0zZtJFdyExLa70asN+ifs8Q3d5/KJiGaFNHRjevgIyVqJOGUXLK/fLysEZKv+2qpbGv3Prz3clvAIJOppgMaaVapJACxtPqCsse17XCowdCqhxERgnWD4LnZM2FKZumWvstqmQ3SvkF1DsiUDp2+A= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1622126194; h=Content-Type: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=uY50HrrozmNGZa3Sj60ePH/E9jzTJPx693fzbpd6jxU=; b=JBizjeRN4s29FYPZMfiCV5D+l0PLFrjysqJSIrqceGh3OWuraR0getlJAvZFOW6K8GwGlUDr9LX6HGTDsgeuJd91B1VINHafhE4kGoco5o0dW+4KAiYK4rC3yZa3uJe8elfadFck9KIXCOCjXpRZCWJg60fug3lzCVmhqFsB1yU= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=fail; 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 1622126194563330.1838492607775; Thu, 27 May 2021 07:36:34 -0700 (PDT) Received: from localhost ([::1]:37876 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lmH7h-00059N-Cd for importer@patchew.org; Thu, 27 May 2021 10:36:33 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:34176) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lmGwH-0007JH-NQ for qemu-devel@nongnu.org; Thu, 27 May 2021 10:24:45 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:59543) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lmGwG-0004fg-3a for qemu-devel@nongnu.org; Thu, 27 May 2021 10:24:45 -0400 Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-592-XtdC3fOgNX-peQ3M_GE4sw-1; Thu, 27 May 2021 10:24:41 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 0D876180FD65; Thu, 27 May 2021 14:24:36 +0000 (UTC) Received: from sirius.home.kraxel.org (ovpn-112-84.ams2.redhat.com [10.36.112.84]) by smtp.corp.redhat.com (Postfix) with ESMTPS id C3F7B5D9CC; Thu, 27 May 2021 14:24:35 +0000 (UTC) Received: by sirius.home.kraxel.org (Postfix, from userid 1000) id 733991800846; Thu, 27 May 2021 16:23:41 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1622125483; 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=uY50HrrozmNGZa3Sj60ePH/E9jzTJPx693fzbpd6jxU=; b=huLpN17+e1IN5sj4NmFbN6UDeyRgV+DwDmHHQY4SLRQXPcmhp4/SMwXcoWYUCpJVXdaHpx 5+sheIk2Sn3/s0a7nMIf/j0yyjZB8uwJyPzEtcMRm4D4wlEPQEtTIP8Wy6ih2pEZ3RUfRQ An8VCHwVzwagrJuEODG5iM5/xno7Mls= X-MC-Unique: XtdC3fOgNX-peQ3M_GE4sw-1 From: Gerd Hoffmann To: qemu-devel@nongnu.org Subject: [PULL 10/23] ui: Get the fd associated with udmabuf driver Date: Thu, 27 May 2021 16:23:27 +0200 Message-Id: <20210527142340.1352791-11-kraxel@redhat.com> In-Reply-To: <20210527142340.1352791-1-kraxel@redhat.com> References: <20210527142340.1352791-1-kraxel@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=kraxel@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com 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=170.10.133.124; envelope-from=kraxel@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -31 X-Spam_score: -3.2 X-Spam_bar: --- X-Spam_report: (-3.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.374, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, 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: "Michael S. Tsirkin" , Cornelia Huck , Vivek Kasireddy , Gerd Hoffmann , Paolo Bonzini , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" From: Vivek Kasireddy 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 Message-Id: <20210526231429.1045476-2-vivek.kasireddy@intel.com> [ kraxel: fixup fcntl.h include ] Signed-off-by: Gerd Hoffmann --- include/ui/console.h | 3 +++ ui/udmabuf.c | 40 ++++++++++++++++++++++++++++++++++++++++ ui/meson.build | 1 + 3 files changed, 44 insertions(+) create mode 100644 ui/udmabuf.c diff --git a/include/ui/console.h b/include/ui/console.h index ca3c7af6a6c8..b30b63976a5a 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/udmabuf.c b/ui/udmabuf.c new file mode 100644 index 000000000000..23abe1e7eb91 --- /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 diff --git a/ui/meson.build b/ui/meson.build index b5aed14886cf..a3a187d633ab 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')) --=20 2.31.1