From patchwork Tue Jan 19 19:06:56 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [6/8] virtio-serial: Add a 'virtserialport' device for generic serial port support Date: Tue, 19 Jan 2010 09:06:56 -0000 From: Amit Shah X-Patchwork-Id: 43205 Message-Id: <1263928018-32531-7-git-send-email-amit.shah@redhat.com> To: qemu-devel@nongnu.org Cc: Amit Shah This commit adds a simple chardev-based serial port. Any data the guest sends is forwarded to the chardev and vice-versa. 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 | 34 ++++++++++++++++++++++++++++++++++ 1 files changed, 34 insertions(+), 0 deletions(-) diff --git a/hw/virtio-serial.c b/hw/virtio-serial.c index 9c2c93c..bd44ec6 100644 --- a/hw/virtio-serial.c +++ b/hw/virtio-serial.c @@ -110,3 +110,37 @@ 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); + port->info->have_data = flush_buf; + } + return 0; +} + +static VirtIOSerialPortInfo virtserialport_info = { + .qdev.name = "virtserialport", + .qdev.size = sizeof(VirtConsole), + .init = virtserialport_initfn, + .exit = virtconsole_exitfn, + .qdev.props = (Property[]) { + DEFINE_PROP_CHR("chardev", VirtConsole, chr), + DEFINE_PROP_STRING("name", VirtConsole, port.name), + DEFINE_PROP_END_OF_LIST(), + }, +}; + +static void virtserialport_register(void) +{ + virtio_serial_port_qdev_register(&virtserialport_info); +} +device_init(virtserialport_register)