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From fcb66d7ac2271bcf0b46d6b1ae2d3db38e78bf2b Mon Sep 17 00:00:00 2001
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From: Amit Shah <amit.shah@redhat.com>
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Date: Wed, 20 Jan 2010 00:36:56 +0530
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Subject: [PATCH 6/9] virtio-serial: Add a 'virtserialport' device for generic serial port support
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This commit adds a simple chardev-based serial port. Any data the guest
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sends is forwarded to the chardev and vice-versa.
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Sample uses for such a device can be obtaining info from the guest like
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the file systems used, apps installed, etc. for offline usage and
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logged-in users, clipboard copy-paste, etc. for online usage.
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Signed-off-by: Amit Shah <amit.shah@redhat.com>
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Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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---
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hw/virtio-serial.c | 34 ++++++++++++++++++++++++++++++++++
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1 files changed, 34 insertions(+), 0 deletions(-)
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diff --git a/hw/virtio-serial.c b/hw/virtio-serial.c
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index 9c2c93c..bd44ec6 100644
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--- a/hw/virtio-serial.c
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+++ b/hw/virtio-serial.c
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@@ -110,3 +110,37 @@ static void virtconsole_register(void)
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virtio_serial_port_qdev_register(&virtconsole_info);
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}
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device_init(virtconsole_register)
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+
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+/* Generic Virtio Serial Ports */
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+static int virtserialport_initfn(VirtIOSerialDevice *dev)
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+{
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+ VirtIOSerialPort *port = DO_UPCAST(VirtIOSerialPort, dev, &dev->qdev);
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+ VirtConsole *vcon = DO_UPCAST(VirtConsole, port, port);
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+
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+ port->info = dev->info;
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+
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+ if (vcon->chr) {
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+ qemu_chr_add_handlers(vcon->chr, chr_can_read, chr_read, chr_event,
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+ vcon);
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+ port->info->have_data = flush_buf;
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+ }
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+ return 0;
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+}
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+
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+static VirtIOSerialPortInfo virtserialport_info = {
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+ .qdev.name = "virtserialport",
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+ .qdev.size = sizeof(VirtConsole),
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+ .init = virtserialport_initfn,
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+ .exit = virtconsole_exitfn,
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+ .qdev.props = (Property[]) {
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+ DEFINE_PROP_CHR("chardev", VirtConsole, chr),
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+ DEFINE_PROP_STRING("name", VirtConsole, port.name),
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+ DEFINE_PROP_END_OF_LIST(),
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+ },
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+};
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+
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+static void virtserialport_register(void)
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+{
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+ virtio_serial_port_qdev_register(&virtserialport_info);
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+}
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+device_init(virtserialport_register)
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--
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1.6.2.5
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