From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1NRqqM-0002O3-Nq for qemu-devel@nongnu.org; Mon, 04 Jan 2010 12:35:50 -0500 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1NRqqH-0002KF-Nu for qemu-devel@nongnu.org; Mon, 04 Jan 2010 12:35:50 -0500 Received: from [199.232.76.173] (port=41094 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1NRqqH-0002K1-GD for qemu-devel@nongnu.org; Mon, 04 Jan 2010 12:35:45 -0500 Received: from mx1.redhat.com ([209.132.183.28]:61998) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1NRqqG-0000Ha-Cz for qemu-devel@nongnu.org; Mon, 04 Jan 2010 12:35:44 -0500 From: Amit Shah Date: Mon, 4 Jan 2010 23:04:16 +0530 Message-Id: <1262626457-26671-8-git-send-email-amit.shah@redhat.com> In-Reply-To: <1262626457-26671-7-git-send-email-amit.shah@redhat.com> References: <1262626457-26671-1-git-send-email-amit.shah@redhat.com> <1262626457-26671-2-git-send-email-amit.shah@redhat.com> <1262626457-26671-3-git-send-email-amit.shah@redhat.com> <1262626457-26671-4-git-send-email-amit.shah@redhat.com> <1262626457-26671-5-git-send-email-amit.shah@redhat.com> <1262626457-26671-6-git-send-email-amit.shah@redhat.com> <1262626457-26671-7-git-send-email-amit.shah@redhat.com> Subject: [Qemu-devel] [PATCH 7/8] virtio-serial: Add '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 , kraxel@redhat.com, agraf@suse.de, armbru@redhat.com 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..f417929 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, 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) -- 1.6.2.5