From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1NSmrr-0004L7-V6 for qemu-devel@nongnu.org; Thu, 07 Jan 2010 02:33:15 -0500 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1NSmrn-0004Fb-42 for qemu-devel@nongnu.org; Thu, 07 Jan 2010 02:33:15 -0500 Received: from [199.232.76.173] (port=59387 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1NSmrm-0004FO-RP for qemu-devel@nongnu.org; Thu, 07 Jan 2010 02:33:10 -0500 Received: from mx1.redhat.com ([209.132.183.28]:28177) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1NSmrm-0004sK-Du for qemu-devel@nongnu.org; Thu, 07 Jan 2010 02:33:10 -0500 Received: from int-mx02.intmail.prod.int.phx2.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id o077X97x024481 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Thu, 7 Jan 2010 02:33:09 -0500 From: Amit Shah Date: Thu, 7 Jan 2010 13:01:45 +0530 Message-Id: <1262849506-27132-8-git-send-email-amit.shah@redhat.com> In-Reply-To: <1262849506-27132-7-git-send-email-amit.shah@redhat.com> References: <1262849506-27132-1-git-send-email-amit.shah@redhat.com> <1262849506-27132-2-git-send-email-amit.shah@redhat.com> <1262849506-27132-3-git-send-email-amit.shah@redhat.com> <1262849506-27132-4-git-send-email-amit.shah@redhat.com> <1262849506-27132-5-git-send-email-amit.shah@redhat.com> <1262849506-27132-6-git-send-email-amit.shah@redhat.com> <1262849506-27132-7-git-send-email-amit.shah@redhat.com> Subject: [Qemu-devel] [PATCH 7/8] virtio-serial: Add a 'virtserialport' device for generic serial port support List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Amit Shah 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 fd27c33..44d8a72 100644 --- a/hw/virtio-serial.c +++ b/hw/virtio-serial.c @@ -113,3 +113,39 @@ 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, 0), + 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) -- 1.6.2.5