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#============================================================================
# This library is free software; you can redistribute it and/or
# modify it under the terms of version 2.1 of the GNU Lesser General Public
# License as published by the Free Software Foundation.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#============================================================================
# Copyright (C) 2004, 2005 Mike Wray <mike.wray@hp.com>
# Copyright (C) 2005 XenSource Ltd
# Copyright (C) 2005 Jody Belka
#============================================================================
# This code based on tools/python/xen/xend/server/iopif.py and modified
# to handle interrupts
#============================================================================
import types
import xen.lowlevel.xc
from xen.xend import sxp
from xen.xend.XendError import VmError
from xen.xend.server.DevController import DevController
xc = xen.lowlevel.xc.xc()
class IRQController(DevController):
def __init__(self, vm):
DevController.__init__(self, vm)
valid_cfg = ['irq', 'uuid']
def getDeviceConfiguration(self, devid, transaction = None):
result = DevController.getDeviceConfiguration(self, devid, transaction)
if transaction is None:
devinfo = self.readBackend(devid, *self.valid_cfg)
else:
devinfo = self.readBackendTxn(transaction, devid, *self.valid_cfg)
config = dict(zip(self.valid_cfg, devinfo))
config = dict([(key, val) for key, val in config.items()
if val != None])
return config
def getDeviceDetails(self, config):
"""@see DevController.getDeviceDetails"""
def get_param(field):
try:
val = config.get(field)
if not val:
raise VmError('irq: Missing %s config setting' % field)
if isinstance(val, types.StringType):
return int(val,10)
radix = 10
else:
return val
except:
raise VmError('irq: Invalid config setting %s: %s' %
(field, val))
pirq = get_param('irq')
rc = xc.domain_irq_permission(domid = self.getDomid(),
pirq = pirq,
allow_access = True)
if rc < 0:
#todo non-fatal
raise VmError(
'irq: Failed to configure irq: %d' % (pirq))
rc = xc.physdev_map_pirq(domid = self.getDomid(),
index = pirq,
pirq = pirq)
if rc < 0:
raise VmError(
'irq: Failed to map irq %x' % (pirq))
back = dict([(k, config[k]) for k in self.valid_cfg if k in config])
return (self.allocateDeviceID(), back, {})
def waitForDevice(self, devid):
# don't wait for hotplug
return
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