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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen-unstable] xend: pass-through: Move pci conversion functions to pci.py
# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1245220607 -3600
# Node ID a4036225c1688a99cddba4e3b7cdbea0326757c9
# Parent 60588f1f055f40debf5b9f65dc012009d36c8cd1
xend: pass-through: Move pci conversion functions to pci.py
Move dev_dict_to_sxp() into XendSXPDev.py. Move
pci_convert_dict_to_sxp() and pci_convert_sxp_to_dict() to pci.py,
where other similar functions live. This makes these functions
accessible outside of the XendConfig class.
Signed-off-by: Simon Horman <horms@xxxxxxxxxxxx>
---
tools/python/xen/util/pci.py | 75 ++++++++++++++++++++++++++
tools/python/xen/xend/XendConfig.py | 91 +-------------------------------
tools/python/xen/xend/XendDomainInfo.py | 10 ++-
tools/python/xen/xend/XendSXPDev.py | 14 ++++
4 files changed, 100 insertions(+), 90 deletions(-)
diff -r 60588f1f055f -r a4036225c168 tools/python/xen/util/pci.py
--- a/tools/python/xen/util/pci.py Wed Jun 17 07:35:51 2009 +0100
+++ b/tools/python/xen/util/pci.py Wed Jun 17 07:36:47 2009 +0100
@@ -14,8 +14,10 @@ import time
import time
import threading
from xen.util import utils
+from xen.xend import uuid
from xen.xend import sxp
from xen.xend.XendConstants import AUTO_PHP_SLOT
+from xen.xend.XendSXPDev import dev_dict_to_sxp
PROC_PCI_PATH = '/proc/bus/pci/devices'
PROC_PCI_NUM_RESOURCES = 7
@@ -138,6 +140,79 @@ def pci_opts_list_to_sxp(list):
def pci_opts_list_from_sxp(dev):
return map(lambda x: sxp.children(x)[0], sxp.children(dev, 'opts'))
+
+def pci_convert_dict_to_sxp(dev, state, sub_state = None):
+ pci_sxp = ['pci', dev_dict_to_sxp(dev), ['state', state]]
+ if sub_state != None:
+ pci_sxp.append(['sub_state', sub_state])
+ return pci_sxp
+
+def pci_convert_sxp_to_dict(dev_sxp):
+ """Convert pci device sxp to dict
+ @param dev_sxp: device configuration
+ @type dev_sxp: SXP object (parsed config)
+ @return: dev_config
+ @rtype: dictionary
+ """
+ # Parsing the device SXP's. In most cases, the SXP looks
+ # like this:
+ #
+ # [device, [vif, [mac, xx:xx:xx:xx:xx:xx], [ip 1.3.4.5]]]
+ #
+ # However, for PCI devices it looks like this:
+ #
+ # [device, [pci, [dev, [domain, 0], [bus, 0], [slot, 1], [func, 2]]]
+ #
+ # It seems the reasoning for this difference is because
+ # pciif.py needs all the PCI device configurations at
+ # the same time when creating the devices.
+ #
+ # To further complicate matters, Xen 2.0 configuration format
+ # uses the following for pci device configuration:
+ #
+ # [device, [pci, [domain, 0], [bus, 0], [dev, 1], [func, 2]]]
+
+ # For PCI device hotplug support, the SXP of PCI devices is
+ # extendend like this:
+ #
+ # [device, [pci, [dev, [domain, 0], [bus, 0], [slot, 1], [func, 2],
+ # [vslot, 0]],
+ # [state, 'Initialising']]]
+ #
+ # 'vslot' shows the virtual hotplug slot number which the PCI device
+ # is inserted in. This is only effective for HVM domains.
+ #
+ # state 'Initialising' indicates that the device is being attached,
+ # while state 'Closing' indicates that the device is being detached.
+ #
+ # The Dict looks like this:
+ #
+ # { devs: [{domain: 0, bus: 0, slot: 1, func: 2, vslot: 0}],
+ # states: ['Initialising'] }
+
+ dev_config = {}
+
+ pci_devs = []
+ for pci_dev in sxp.children(dev_sxp, 'dev'):
+ pci_dev_info = dict(pci_dev[1:])
+ if 'opts' in pci_dev_info:
+ pci_dev_info['opts'] = pci_opts_list_from_sxp(pci_dev)
+ # append uuid to each pci device that does't already have one.
+ if not pci_dev_info.has_key('uuid'):
+ dpci_uuid = pci_dev_info.get('uuid', uuid.createString())
+ pci_dev_info['uuid'] = dpci_uuid
+ pci_devs.append(pci_dev_info)
+ dev_config['devs'] = pci_devs
+
+ pci_states = []
+ for pci_state in sxp.children(dev_sxp, 'state'):
+ try:
+ pci_states.append(pci_state[1])
+ except IndexError:
+ raise XendError("Error reading state while parsing pci sxp")
+ dev_config['states'] = pci_states
+
+ return dev_config
def parse_hex(val):
try:
diff -r 60588f1f055f -r a4036225c168 tools/python/xen/xend/XendConfig.py
--- a/tools/python/xen/xend/XendConfig.py Wed Jun 17 07:35:51 2009 +0100
+++ b/tools/python/xen/xend/XendConfig.py Wed Jun 17 07:36:47 2009 +0100
@@ -36,7 +36,8 @@ from xen.xend.server.BlktapController im
from xen.xend.server.BlktapController import blktap_disk_types
from xen.xend.server.netif import randomMAC
from xen.util.blkif import blkdev_name_to_number, blkdev_uname_to_file
-from xen.util.pci import pci_opts_list_from_sxp
+from xen.util.pci import pci_opts_list_from_sxp, pci_convert_sxp_to_dict
+from xen.xend.XendSXPDev import dev_dict_to_sxp
from xen.util import xsconstants
import xen.util.auxbin
@@ -1295,7 +1296,7 @@ class XendConfig(dict):
pci_devs_uuid = sxp.child_value(config, 'uuid',
uuid.createString())
- pci_dict = self.pci_convert_sxp_to_dict(config)
+ pci_dict = pci_convert_sxp_to_dict(config)
pci_devs = pci_dict['devs']
# create XenAPI DPCI objects.
@@ -1604,79 +1605,6 @@ class XendConfig(dict):
return dev_uuid
return ''
-
- def pci_convert_dict_to_sxp(self, dev, state, sub_state = None):
- pci_sxp = ['pci', self.dev_dict_to_sxp(dev), ['state', state]]
- if sub_state != None:
- pci_sxp.append(['sub_state', sub_state])
- return pci_sxp
-
- def pci_convert_sxp_to_dict(self, dev_sxp):
- """Convert pci device sxp to dict
- @param dev_sxp: device configuration
- @type dev_sxp: SXP object (parsed config)
- @return: dev_config
- @rtype: dictionary
- """
- # Parsing the device SXP's. In most cases, the SXP looks
- # like this:
- #
- # [device, [vif, [mac, xx:xx:xx:xx:xx:xx], [ip 1.3.4.5]]]
- #
- # However, for PCI devices it looks like this:
- #
- # [device, [pci, [dev, [domain, 0], [bus, 0], [slot, 1], [func, 2]]]
- #
- # It seems the reasoning for this difference is because
- # pciif.py needs all the PCI device configurations at
- # the same time when creating the devices.
- #
- # To further complicate matters, Xen 2.0 configuration format
- # uses the following for pci device configuration:
- #
- # [device, [pci, [domain, 0], [bus, 0], [dev, 1], [func, 2]]]
-
- # For PCI device hotplug support, the SXP of PCI devices is
- # extendend like this:
- #
- # [device, [pci, [dev, [domain, 0], [bus, 0], [slot, 1], [func, 2],
- # [vslot, 0]],
- # [state, 'Initialising']]]
- #
- # 'vslot' shows the virtual hotplug slot number which the PCI device
- # is inserted in. This is only effective for HVM domains.
- #
- # state 'Initialising' indicates that the device is being attached,
- # while state 'Closing' indicates that the device is being detached.
- #
- # The Dict looks like this:
- #
- # { devs: [{domain: 0, bus: 0, slot: 1, func: 2, vslot: 0}],
- # states: ['Initialising'] }
-
- dev_config = {}
-
- pci_devs = []
- for pci_dev in sxp.children(dev_sxp, 'dev'):
- pci_dev_info = dict(pci_dev[1:])
- if 'opts' in pci_dev_info:
- pci_dev_info['opts'] = pci_opts_list_from_sxp(pci_dev)
- # append uuid to each pci device that does't already have one.
- if not pci_dev_info.has_key('uuid'):
- dpci_uuid = pci_dev_info.get('uuid', uuid.createString())
- pci_dev_info['uuid'] = dpci_uuid
- pci_devs.append(pci_dev_info)
- dev_config['devs'] = pci_devs
-
- pci_states = []
- for pci_state in sxp.children(dev_sxp, 'state'):
- try:
- pci_states.append(pci_state[1])
- except IndexError:
- raise XendError("Error reading state while parsing pci sxp")
- dev_config['states'] = pci_states
-
- return dev_config
def vscsi_convert_sxp_to_dict(self, dev_sxp):
"""Convert vscsi device sxp to dict
@@ -1848,7 +1776,7 @@ class XendConfig(dict):
dev_type, dev_info = self['devices'][dev_uuid]
if dev_type == 'pci': # Special case for pci
- pci_dict = self.pci_convert_sxp_to_dict(config)
+ pci_dict = pci_convert_sxp_to_dict(config)
pci_devs = pci_dict['devs']
# destroy existing XenAPI DPCI objects
@@ -1971,15 +1899,6 @@ class XendConfig(dict):
result.extend([u for u in target['devices'].keys() if u not in result])
return result
- # This includes a generic equivalent of pci_opts_list_to_sxp()
- def dev_dict_to_sxp(self, dev):
- def f((key, val)):
- if isinstance(val, types.ListType):
- return map(lambda x: [key, x], val)
- return [[key, val]]
- dev_sxp = ['dev'] + reduce(lambda x, y: x + y, map(f, dev.items()))
- return dev_sxp
-
def all_devices_sxpr(self, target = None):
"""Returns the SXPR for all devices in the current configuration."""
sxprs = []
@@ -2002,7 +1921,7 @@ class XendConfig(dict):
if dev_info.has_key('backend'):
sxpr.append(['backend', dev_info['backend']])
for pci_dev_info in dev_info['devs']:
- sxpr.append(self.dev_dict_to_sxp(pci_dev_info))
+ sxpr.append(dev_dict_to_sxp(pci_dev_info))
sxprs.append((dev_type, sxpr))
else:
sxpr = self.device_sxpr(dev_type = dev_type,
diff -r 60588f1f055f -r a4036225c168 tools/python/xen/xend/XendDomainInfo.py
--- a/tools/python/xen/xend/XendDomainInfo.py Wed Jun 17 07:35:51 2009 +0100
+++ b/tools/python/xen/xend/XendDomainInfo.py Wed Jun 17 07:36:47 2009 +0100
@@ -40,7 +40,9 @@ import xen.util.xsm.xsm as security
import xen.util.xsm.xsm as security
from xen.util import xsconstants
from xen.util.pci import serialise_pci_opts, pci_opts_list_to_sxp, \
- pci_dict_to_bdf_str, pci_dict_to_xc_str, pci_dict_cmp
+ pci_dict_to_bdf_str, pci_dict_to_xc_str, \
+ pci_convert_sxp_to_dict, pci_convert_dict_to_sxp, \
+ pci_dict_cmp
from xen.xend import balloon, sxp, uuid, image, arch
from xen.xend import XendOptions, XendNode, XendConfig
@@ -616,8 +618,8 @@ class XendDomainInfo:
pci_conf = self.info['devices'][dev_uuid][1]
pci_devs = pci_conf['devs']
request = map(lambda x:
- self.info.pci_convert_dict_to_sxp(x, 'Initialising',
- 'Booting'), pci_devs)
+ pci_convert_dict_to_sxp(x, 'Initialising', 'Booting'),
+ pci_devs)
for i in request:
self.pci_device_configure(i)
@@ -815,7 +817,7 @@ class XendDomainInfo:
raise XendError("Cannot detach when pci platform does not exist")
pci_dev = sxp.children(dev_sxp, 'dev')[0]
- dev_config = self.info.pci_convert_sxp_to_dict(dev_sxp)
+ dev_config = pci_convert_sxp_to_dict(dev_sxp)
dev = dev_config['devs'][0]
# Do HVM specific processing
diff -r 60588f1f055f -r a4036225c168 tools/python/xen/xend/XendSXPDev.py
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/python/xen/xend/XendSXPDev.py Wed Jun 17 07:36:47 2009 +0100
@@ -0,0 +1,14 @@
+#!/usr/bin/env python
+#
+# Helper functions for dealing with the sxp representation of devices
+
+import types
+
+# This includes a generic equivalent of pci_opts_list_to_sxp()
+def dev_dict_to_sxp(dev):
+ def f((key, val)):
+ if isinstance(val, types.ListType):
+ return map(lambda x: [key, x], val)
+ return [[key, val]]
+ dev_sxp = ['dev'] + reduce(lambda x, y: x + y, map(f, dev.items()))
+ return dev_sxp
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