From patchwork Wed Dec 23 19:52:27 2009 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Amit Shah X-Patchwork-Id: 41698 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [199.232.76.165]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 3012AB7BBA for ; Thu, 24 Dec 2009 07:06:38 +1100 (EST) Received: from localhost ([127.0.0.1]:59442 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1NNXTf-0002Ss-TO for incoming@patchwork.ozlabs.org; Wed, 23 Dec 2009 15:06:35 -0500 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1NNXHT-0007DV-PN for qemu-devel@nongnu.org; Wed, 23 Dec 2009 14:53:59 -0500 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1NNXHP-00079u-C4 for qemu-devel@nongnu.org; Wed, 23 Dec 2009 14:53:59 -0500 Received: from [199.232.76.173] (port=43547 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1NNXHO-00079W-Tv for qemu-devel@nongnu.org; Wed, 23 Dec 2009 14:53:55 -0500 Received: from mx1.redhat.com ([209.132.183.28]:6961) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1NNXHO-0008LP-M5 for qemu-devel@nongnu.org; Wed, 23 Dec 2009 14:53:54 -0500 Received: from int-mx01.intmail.prod.int.phx2.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id nBNJrrJG008170 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Wed, 23 Dec 2009 14:53:53 -0500 Received: from localhost (vpn-11-174.rdu.redhat.com [10.11.11.174]) by int-mx01.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id nBNJrpg3025421; Wed, 23 Dec 2009 14:53:52 -0500 From: Amit Shah To: qemu-devel@nongnu.org Date: Thu, 24 Dec 2009 01:22:27 +0530 Message-Id: <1261597948-24293-8-git-send-email-amit.shah@redhat.com> In-Reply-To: <1261597948-24293-7-git-send-email-amit.shah@redhat.com> References: <1261597948-24293-1-git-send-email-amit.shah@redhat.com> <1261597948-24293-2-git-send-email-amit.shah@redhat.com> <1261597948-24293-3-git-send-email-amit.shah@redhat.com> <1261597948-24293-4-git-send-email-amit.shah@redhat.com> <1261597948-24293-5-git-send-email-amit.shah@redhat.com> <1261597948-24293-6-git-send-email-amit.shah@redhat.com> <1261597948-24293-7-git-send-email-amit.shah@redhat.com> X-Scanned-By: MIMEDefang 2.67 on 10.5.11.11 X-detected-operating-system: by monty-python.gnu.org: Genre and OS details not recognized. Cc: Amit Shah , kraxel@redhat.com, agraf@suse.de, armbru@redhat.com Subject: [Qemu-devel] [PATCH 7/8] virtio-serial: Add 'virtserialport' device for generic serial port support X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This patch adds generic serial ports over the virtio serial bus. These ports have a few more options that are not relevant for virtio console ports: the ability to cache buffers that are received for a port while it's disconnected, setting of limits to the bytes that are cached so as to prevent OOM conditions, etc. Sample uses for such a device can be obtaining info from the guest like the file systems used, apps installed, etc. for offline usage and logged-in users, clipboard copy-paste, etc. for online usage. Signed-off-by: Amit Shah --- hw/virtio-serial.c | 36 ++++++++++++++++++++++++++++++++++++ 1 files changed, 36 insertions(+), 0 deletions(-) diff --git a/hw/virtio-serial.c b/hw/virtio-serial.c index 94eeed0..8e227f3 100644 --- a/hw/virtio-serial.c +++ b/hw/virtio-serial.c @@ -120,3 +120,39 @@ static void virtconsole_register(void) virtio_serial_port_qdev_register(&virtconsole_info); } device_init(virtconsole_register) + +/* Generic Virtio Serial Ports */ +static int virtserialport_initfn(VirtIOSerialDevice *dev) +{ + VirtIOSerialPort *port = DO_UPCAST(VirtIOSerialPort, dev, &dev->qdev); + VirtConsole *vcon = DO_UPCAST(VirtConsole, port, port); + + port->info = dev->info; + + if (vcon->chr) { + qemu_chr_add_handlers(vcon->chr, chr_can_read, chr_read, chr_event, + vcon); + } + return 0; +} + +static VirtIOSerialPortInfo virtserialport_info = { + .qdev.name = "virtserialport", + .qdev.size = sizeof(VirtConsole), + .init = virtserialport_initfn, + .exit = virtconsole_exitfn, + .have_data = flush_buf, + .qdev.props = (Property[]) { + DEFINE_PROP_CHR("chardev", VirtConsole, chr), + DEFINE_PROP_STRING("name", VirtConsole, port.name), + DEFINE_PROP_UINT8("cache_buffers", VirtConsole, port.cache_buffers, 1), + DEFINE_PROP_UINT64("byte_limit", VirtConsole, port.byte_limit, 0), + DEFINE_PROP_END_OF_LIST(), + }, +}; + +static void virtserialport_register(void) +{ + virtio_serial_port_qdev_register(&virtserialport_info); +} +device_init(virtserialport_register)