From patchwork Thu Jan 14 13:17:42 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Amit Shah X-Patchwork-Id: 42891 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 AB1BFB7CBB for ; Fri, 15 Jan 2010 01:12:58 +1100 (EST) Received: from localhost ([127.0.0.1]:53417 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1NVQRT-00059W-7G for incoming@patchwork.ozlabs.org; Thu, 14 Jan 2010 09:12:55 -0500 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1NVQ7A-0004Ct-4I for qemu-devel@nongnu.org; Thu, 14 Jan 2010 08:51:56 -0500 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1NVQ75-00049D-BM for qemu-devel@nongnu.org; Thu, 14 Jan 2010 08:51:55 -0500 Received: from [199.232.76.173] (port=59959 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1NVQ74-00048u-TN for qemu-devel@nongnu.org; Thu, 14 Jan 2010 08:51:50 -0500 Received: from mx20.gnu.org ([199.232.41.8]:15245) by monty-python.gnu.org with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1NVPzY-00077a-QA for qemu-devel@nongnu.org; Thu, 14 Jan 2010 08:44:04 -0500 Received: from mx1.redhat.com ([209.132.183.28]) by mx20.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1NVPbi-0002d5-NO for qemu-devel@nongnu.org; Thu, 14 Jan 2010 08:19:27 -0500 Received: from int-mx08.intmail.prod.int.phx2.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.21]) by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id o0EDJBsl007537 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Thu, 14 Jan 2010 08:19:12 -0500 Received: from localhost (vpn-246-68.phx2.redhat.com [10.3.246.68]) by int-mx08.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id o0EDJAlQ016406; Thu, 14 Jan 2010 08:19:11 -0500 From: Amit Shah To: qemu-devel@nongnu.org Date: Thu, 14 Jan 2010 18:47:42 +0530 Message-Id: <1263475063-15238-8-git-send-email-amit.shah@redhat.com> In-Reply-To: <1263475063-15238-7-git-send-email-amit.shah@redhat.com> References: <1263475063-15238-1-git-send-email-amit.shah@redhat.com> <1263475063-15238-2-git-send-email-amit.shah@redhat.com> <1263475063-15238-3-git-send-email-amit.shah@redhat.com> <1263475063-15238-4-git-send-email-amit.shah@redhat.com> <1263475063-15238-5-git-send-email-amit.shah@redhat.com> <1263475063-15238-6-git-send-email-amit.shah@redhat.com> <1263475063-15238-7-git-send-email-amit.shah@redhat.com> X-Scanned-By: MIMEDefang 2.67 on 10.5.11.21 X-detected-operating-system: by mx20.gnu.org: Genre and OS details not recognized. X-detected-operating-system: by monty-python.gnu.org: GNU/Linux 2.6, seldom 2.4 (older, 4) Cc: Amit Shah Subject: [Qemu-devel] [PATCH 7/8] virtio-serial: Add a '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 | 35 +++++++++++++++++++++++++++++++++++ 1 files changed, 35 insertions(+), 0 deletions(-) diff --git a/hw/virtio-serial.c b/hw/virtio-serial.c index 9bcf461..173154b 100644 --- a/hw/virtio-serial.c +++ b/hw/virtio-serial.c @@ -106,3 +106,38 @@ 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_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)