virt-manager/virtinst/devicehostdev.py

#
# Copyright 2009, 2013 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 .device import VirtualDevice
from .nodedev import NodeDevice
from .xmlbuilder import XMLProperty


class VirtualHostDevice(VirtualDevice):
    virtual_device_type = VirtualDevice.VIRTUAL_DEV_HOSTDEV

    def set_from_nodedev(self, nodedev, use_full_usb=None):
        """
        @use_full_usb: If set, and nodedev is USB, specify both
            vendor and product. Used if user requests bus/add on virt-install
            command line, or if virt-manager detects a dup USB device
            and we need to differentiate
        """
        if (use_full_usb is None and
            nodedev.addr_type == nodedev.HOSTDEV_ADDR_TYPE_USB_BUSADDR):
            use_full_usb = True

        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

        elif nodedev.device_type == NodeDevice.CAPABILITY_TYPE_USBDEV:
            self.type = "usb"
            self.vendor = nodedev.vendor_id
            self.product = nodedev.product_id

            if use_full_usb:
                self.bus = nodedev.bus
                self.device = nodedev.device

        elif nodedev.device_type == nodedev.CAPABILITY_TYPE_NET:
            parentnode = nodedev.lookupNodeName(self.conn, nodedev.parent)
            self.set_from_nodedev(parentnode, use_full_usb=use_full_usb)

        else:
            raise ValueError("Unknown node device type %s" % nodedev)


    _XML_PROP_ORDER = ["mode", "type", "managed", "vendor", "product",
                       "domain", "bus", "slot", "function"]

    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"
    managed = XMLProperty("./@managed", is_yesno=True,
                          default_cb=_get_default_managed)

    vendor = XMLProperty("./source/vendor/@id")
    product = XMLProperty("./source/product/@id")

    device = XMLProperty("./source/address/@device")
    bus = XMLProperty("./source/address/@bus")

    def _get_default_domain(self):
        if self.type == "pci":
            return "0x0"
        return None
    domain = XMLProperty("./source/address/@domain",
                         default_cb=_get_default_domain)
    function = XMLProperty("./source/address/@function")
    slot = XMLProperty("./source/address/@slot")

    driver_name = XMLProperty("./driver/@name")
    rom_bar = XMLProperty("./rom/@bar", is_onoff=True)


VirtualHostDevice.register_type()