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[Qemu-devel] [PATCH 7/8] virtio-serial: Add 'virtserialport' device for
From: |
Amit Shah |
Subject: |
[Qemu-devel] [PATCH 7/8] virtio-serial: Add 'virtserialport' device for generic serial port support |
Date: |
Thu, 24 Dec 2009 01:22:27 +0530 |
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 <address@hidden>
---
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 94eeed0..8e227f3 100644
--- a/hw/virtio-serial.c
+++ b/hw/virtio-serial.c
@@ -120,3 +120,39 @@ 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
- [Qemu-devel] [RFC PATCH 0/8] virtio-console: Move to qdev, multiple devices, generic ports, Amit Shah, 2009/12/23
- [Qemu-devel] [PATCH 1/8] virtio: Remove duplicate macro definition for max. virtqueues, bump up the max, Amit Shah, 2009/12/23
- [Qemu-devel] [PATCH 2/8] virtio-console: qdev conversion, new virtio-serial-bus, Amit Shah, 2009/12/23
- [Qemu-devel] [PATCH 3/8] virtio-serial-bus: Maintain guest and host port open/close state, Amit Shah, 2009/12/23
- [Qemu-devel] [PATCH 4/8] virtio-serial-bus: Add a port 'name' property for port discovery in guests, Amit Shah, 2009/12/23
- [Qemu-devel] [PATCH 5/8] virtio-serial-bus: Add support for buffering guest output, throttling guests, Amit Shah, 2009/12/23
- [Qemu-devel] [PATCH 6/8] virtio-serial-bus: Add ability to hot-unplug ports, Amit Shah, 2009/12/23
- [Qemu-devel] [PATCH 7/8] virtio-serial: Add 'virtserialport' device for generic serial port support,
Amit Shah <=
- [Qemu-devel] [PATCH 8/8] Move virtio-serial and virtio-serial-bus to Makefile.hw, Amit Shah, 2009/12/23
- Re: [Qemu-devel] [PATCH 5/8] virtio-serial-bus: Add support for buffering guest output, throttling guests, Anthony Liguori, 2009/12/23
- Re: [Qemu-devel] [PATCH 4/8] virtio-serial-bus: Add a port 'name' property for port discovery in guests, Anthony Liguori, 2009/12/23
- Re: [Qemu-devel] [PATCH 3/8] virtio-serial-bus: Maintain guest and host port open/close state, Anthony Liguori, 2009/12/23
- Re: [Qemu-devel] [PATCH 3/8] virtio-serial-bus: Maintain guest and host port open/close state, Amit Shah, 2009/12/24
- Re: [Qemu-devel] [PATCH 2/8] virtio-console: qdev conversion, new virtio-serial-bus, Anthony Liguori, 2009/12/23
- Re: [Qemu-devel] [PATCH 2/8] virtio-console: qdev conversion, new virtio-serial-bus, Amit Shah, 2009/12/24
Re: [Qemu-devel] [RFC PATCH 0/8] virtio-console: Move to qdev, multiple devices, generic ports, Anthony Liguori, 2009/12/23
[Qemu-devel] Re: [RFC PATCH 0/8] virtio-console: Move to qdev, multiple devices, generic ports, Alexander Graf, 2009/12/24