virt-manager/virtinst/devicehostdev.py

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#
# Copyright 2009 Red Hat, Inc.
# Cole Robinson <crobinso@redhat.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
# MA 02110-1301 USA.
from virtinst import VirtualDevice
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from virtinst import NodeDevice
from virtinst.xmlbuilder import XMLProperty
class VirtualHostDevice(VirtualDevice):
virtual_device_type = VirtualDevice.VIRTUAL_DEV_HOSTDEV
@staticmethod
def device_from_node(conn, name=None, nodedev=None, is_dup=False,
dev=None):
"""
Convert the passed device name to a VirtualHostDevice
instance, with proper error reporting. Name can be any of the
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values accepted by NodeDevice.lookupNodeName. If a node
device name is not specified, a virtinst.NodeDevice instance can
be passed in to create a dev from.
@param conn: libvirt.virConnect instance to perform the lookup on
@param name: optional libvirt node device name to lookup
@param nodedev: optional L{virtinst.NodeDevice} instance to use
@rtype: L{virtinst.VirtualHostDevice} instance
"""
if not name and not nodedev:
raise ValueError("'name' or 'nodedev' required.")
if nodedev:
nodeinst = nodedev
else:
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nodeinst, addr_type = NodeDevice.lookupNodeName(conn, name)
if addr_type == NodeDevice.HOSTDEV_ADDR_TYPE_USB_BUSADDR:
is_dup = True
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if nodeinst.device_type == nodeinst.CAPABILITY_TYPE_NET:
parentname = nodeinst.parent
return VirtualHostDevice.device_from_node(conn,
name=parentname)
if not dev:
dev = VirtualHostDevice(conn)
dev.set_from_nodedev(nodeinst, is_dup)
return dev
def set_from_nodedev(self, nodedev, is_dup=False):
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if nodedev.device_type == NodeDevice.CAPABILITY_TYPE_PCI:
self.type = "pci"
self.domain = nodedev.domain
self.bus = nodedev.bus
self.slot = nodedev.slot
self.function = nodedev.function
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elif nodedev.device_type == NodeDevice.CAPABILITY_TYPE_USBDEV:
self.type = "usb"
self.vendor = nodedev.vendor_id
self.product = nodedev.product_id
if is_dup:
self.bus = nodedev.bus
self.device = nodedev.device
else:
raise ValueError("Unknown node device type %s" % nodedev)
_XML_PROP_ORDER = ["mode", "type", "managed", "vendor", "product",
"domain", "bus", "slot", "function"]
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mode = XMLProperty("./@mode", default_cb=lambda s: "subsystem")
type = XMLProperty("./@type")
def _get_default_managed(self):
return self.conn.is_xen() and "no" or "yes"
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managed = XMLProperty("./@managed", is_yesno=True,
default_cb=_get_default_managed)
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vendor = XMLProperty("./source/vendor/@id")
product = XMLProperty("./source/product/@id")
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device = XMLProperty("./source/address/@device")
bus = XMLProperty("./source/address/@bus")
def _get_default_domain(self):
if self.type == "pci":
return "0x0"
return None
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domain = XMLProperty("./source/address/@domain",
default_cb=_get_default_domain)
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function = XMLProperty("./source/address/@function")
slot = XMLProperty("./source/address/@slot")
VirtualHostDevice.register_type()