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| 1 | +# |
| 2 | +# Copyright 2009 Red Hat, Inc. |
| 3 | +# Cole Robinson <crobinso@redhat.com> |
| 4 | +# |
| 5 | +# This program is free software; you can redistribute it and/or modify |
| 6 | +# it under the terms of the GNU General Public License as published by |
| 7 | +# the Free Software Foundation; either version 2 of the License, or |
| 8 | +# (at your option) any later version. |
| 9 | +# |
| 10 | +# This program is distributed in the hope that it will be useful, |
| 11 | +# but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | +# GNU General Public License for more details. |
| 14 | +# |
| 15 | +# You should have received a copy of the GNU General Public License |
| 16 | +# along with this program; if not, write to the Free Software |
| 17 | +# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, |
| 18 | +# MA 02110-1301 USA. |
| 19 | + |
| 20 | +import VirtualDevice |
| 21 | +import NodeDeviceParser |
| 22 | +import logging |
| 23 | +from virtinst import _virtinst as _ |
| 24 | + |
| 25 | +class VirtualHostDevice(VirtualDevice.VirtualDevice): |
| 26 | + |
| 27 | + def device_from_node(conn, name=None, nodedev=None): |
| 28 | + """ |
| 29 | + Convert the passed libvirt node device name to a VirtualHostDevice |
| 30 | + instance, with proper error reporting. |
| 31 | +
|
| 32 | + @param conn: libvirt.virConnect instance to perform the lookup on |
| 33 | + @param name: libvirt node device name to lookup |
| 34 | +
|
| 35 | + @rtype: L{virtinst.VirtualHostDevice} instance |
| 36 | + """ |
| 37 | + |
| 38 | + if not name and not nodedev: |
| 39 | + raise ValueError(_("'name' or 'nodedev' required.")) |
| 40 | + |
| 41 | + if nodedev: |
| 42 | + nodeinst = nodedev |
| 43 | + else: |
| 44 | + nodeinst = NodeDeviceParser.lookupNodeName(conn, name) |
| 45 | + |
| 46 | + if isinstance(nodeinst, NodeDeviceParser.PCIDevice): |
| 47 | + return VirtualHostDevicePCI(conn, nodedev=nodeinst) |
| 48 | + elif isinstance(nodeinst, NodeDeviceParser.USBDevice): |
| 49 | + return VirtualHostDeviceUSB(conn, nodedev=nodeinst) |
| 50 | + elif isinstance(nodeinst, NodeDeviceParser.NetDevice): |
| 51 | + parentname = nodeinst.parent |
| 52 | + try: |
| 53 | + return VirtualHostDevice.device_from_node(conn, |
| 54 | + name=parentname) |
| 55 | + except: |
| 56 | + logging.exception("Fetching net parent device failed.") |
| 57 | + |
| 58 | + raise ValueError(_("Node device type '%s' cannot be attached to " |
| 59 | + " guest.") % nodeinst.device_type) |
| 60 | + |
| 61 | + device_from_node = staticmethod(device_from_node) |
| 62 | + |
| 63 | + def __init__(self, conn, nodedev): |
| 64 | + """ |
| 65 | + @param conn: Connection the device/guest will be installed on |
| 66 | + @type conn: libvirt.virConnect |
| 67 | + @param nodedev: Optional NodeDevice instance for device being |
| 68 | + attached to the guest |
| 69 | + @type nodedev: L{virtinst.NodeDeviceParser.NodeDevice} |
| 70 | + """ |
| 71 | + VirtualDevice.VirtualDevice.__init__(self, conn) |
| 72 | + |
| 73 | + self.mode = None |
| 74 | + self.type = None |
| 75 | + |
| 76 | + self.managed = True |
| 77 | + |
| 78 | + self._nodedev = nodedev |
| 79 | + |
| 80 | + def _get_source_xml(self): |
| 81 | + raise NotImplementedError("Must be implemented in subclass") |
| 82 | + |
| 83 | + def setup(self, conn = None): |
| 84 | + """ |
| 85 | + Perform DeviceDetach and DeviceReset calls if necessary |
| 86 | +
|
| 87 | + @param conn: libvirt virConnect instance to use (defaults to devices |
| 88 | + connection) |
| 89 | + """ |
| 90 | + raise NotImplementedError |
| 91 | + |
| 92 | + def get_xml_config(self): |
| 93 | + xml = (" <hostdev mode='%s' type='%s' managed='%s'>\n" % \ |
| 94 | + (self.mode, self.type, self.managed and "yes" or "no")) |
| 95 | + xml += " <source>\n" |
| 96 | + xml += self._get_source_xml() |
| 97 | + xml += " </source>\n" |
| 98 | + xml += " </hostdev>\n" |
| 99 | + return xml |
| 100 | + |
| 101 | + |
| 102 | +class VirtualHostDeviceUSB(VirtualHostDevice): |
| 103 | + |
| 104 | + def __init__(self, conn, nodedev=None): |
| 105 | + VirtualHostDevice.__init__(self, conn, nodedev) |
| 106 | + |
| 107 | + self.mode = "subsystem" |
| 108 | + self.type = "usb" |
| 109 | + |
| 110 | + self.vendor = None |
| 111 | + self.product = None |
| 112 | + |
| 113 | + self.bus = None |
| 114 | + self.device = None |
| 115 | + |
| 116 | + self._set_from_nodedev(self._nodedev) |
| 117 | + |
| 118 | + |
| 119 | + def _set_from_nodedev(self, nodedev): |
| 120 | + if not nodedev: |
| 121 | + return |
| 122 | + |
| 123 | + if not isinstance(nodedev, NodeDeviceParser.USBDevice): |
| 124 | + raise ValueError(_("'nodedev' must be a USBDevice instance.")) |
| 125 | + |
| 126 | + self.vendor = nodedev.vendor_id |
| 127 | + self.product = nodedev.product_id |
| 128 | + self.bus = nodedev.bus |
| 129 | + self.device = nodedev.device |
| 130 | + |
| 131 | + def _get_source_xml(self): |
| 132 | + xml = "" |
| 133 | + if self.vendor and self.product: |
| 134 | + xml += " <vendor id='%s'/>\n" % self.vendor |
| 135 | + xml += " <product id='%s'/>\n" % self.product |
| 136 | + elif self.bus and self.device: |
| 137 | + xml += " <address bus='%s' device='%s'/>\n" % (self.bus, |
| 138 | + self.device) |
| 139 | + else: |
| 140 | + raise RuntimeError(_("'vendor' and 'product', or 'bus' and " |
| 141 | + " 'device' are required.")) |
| 142 | + return xml |
| 143 | + |
| 144 | + |
| 145 | + def setup(self, conn = None): |
| 146 | + if not conn: |
| 147 | + conn = self.conn |
| 148 | + |
| 149 | + # No libvirt api support for USB Detach/Reset yet |
| 150 | + return |
| 151 | + |
| 152 | +class VirtualHostDevicePCI(VirtualHostDevice): |
| 153 | + |
| 154 | + def __init__(self, conn, nodedev=None): |
| 155 | + VirtualHostDevice.__init__(self, conn, nodedev) |
| 156 | + |
| 157 | + self.mode = "subsystem" |
| 158 | + self.type = "pci" |
| 159 | + |
| 160 | + self.domain = "0x0" |
| 161 | + self.bus = None |
| 162 | + self.slot = None |
| 163 | + self.function = None |
| 164 | + |
| 165 | + self._set_from_nodedev(self._nodedev) |
| 166 | + |
| 167 | + |
| 168 | + def _set_from_nodedev(self, nodedev): |
| 169 | + if not nodedev: |
| 170 | + return |
| 171 | + |
| 172 | + if not isinstance(nodedev, NodeDeviceParser.PCIDevice): |
| 173 | + raise ValueError(_("'nodedev' must be a PCIDevice instance.")) |
| 174 | + |
| 175 | + self.domain = nodedev.domain |
| 176 | + self.bus = nodedev.bus |
| 177 | + self.slot = nodedev.slot |
| 178 | + self.function = nodedev.function |
| 179 | + |
| 180 | + def _get_source_xml(self): |
| 181 | + if not (self.domain and self.bus and self.slot and self.function): |
| 182 | + raise RuntimeError(_("'domain', 'bus', 'slot', and 'function' " |
| 183 | + "must be specified.")) |
| 184 | + |
| 185 | + xml = " <address domain='%s' bus='%s' slot='%s' function='%s'/>\n" |
| 186 | + return xml % (self.domain, self.bus, self.slot, self.function) |
| 187 | + |
| 188 | + def setup(self, conn = None): |
| 189 | + """ |
| 190 | + Perform DeviceDetach and DeviceReset calls if necessary |
| 191 | +
|
| 192 | + @param conn: libvirt virConnect instance to use (defaults to devices |
| 193 | + connection) |
| 194 | + """ |
| 195 | + if not conn: |
| 196 | + conn = self.conn |
| 197 | + |
| 198 | + if not NodeDeviceParser.is_pci_detach_capable(conn): |
| 199 | + return |
| 200 | + |
| 201 | + try: |
| 202 | + # Do this as a sanity check, so that we don't fail at domain |
| 203 | + # start time |
| 204 | + self._nodedev.deviceDetach() |
| 205 | + self._nodedev.deviceReset() |
| 206 | + except Exception, e: |
| 207 | + raise RuntimeError(_("Could not detach PCI device: %s" % str(e))) |
| 208 | + |
| 209 | + |
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