qemu/qemu-virtio-serial-Add-a-virtserialport-device-for-gen.patch

64 lines
2.1 KiB
Diff

From fcb66d7ac2271bcf0b46d6b1ae2d3db38e78bf2b Mon Sep 17 00:00:00 2001
From: Amit Shah <amit.shah@redhat.com>
Date: Wed, 20 Jan 2010 00:36:56 +0530
Subject: [PATCH 6/9] virtio-serial: Add a 'virtserialport' device for generic serial port support
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 <amit.shah@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
---
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)
--
1.6.2.5