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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [patch 09/17] xend: pass-through: Common parse_pci_name()
Share some parsing code between different parts of xm.
This has the side-effect that the device specification for
hot-plug may now include the VSLOT and OPTS as per device
specifictions in the domain configuration file.
SEQ:BUS:DEV.FUNC[,OPT...]
e.g. 0000:00:01.00@6
Cc: Dexuan Cui <dexuan.cui@xxxxxxxxx>
Cc: Masaki Kanno <kanno.masaki@xxxxxxxxxxxxxx>
Cc: Akio Takebe <takebe_akio@xxxxxxxxxxxxxx>
Signed-off-by: Simon Horman <horms@xxxxxxxxxxxx>
---
Wed, 20 May 2009 23:07:42 +1000
* Fix syntax errors in parse_pci_name() and parse_pci_name_bdf6()
- unnoticed as they were resolved by the subsequent patch
"xm: Allow multi-function device specifications to be parsed
* Enhanced error reporting in parse_pci_name()
* Have parse_pci_name_bdf6() return an int rather than a string for vslot in
keeping with the other integer elements of the bdf6 tuple
Fri, 22 May 2009 15:52:50 +1000
* Consolidate get_all_pci_bdf6() and get_all_pci_devices()
Thu, 28 May 2009 23:56:14 +1000
* Up-port
Tue, 16 Jun 2009 18:37:05 +1000
* In find_parent(), dev['dom'] should be dev['domain'].
Pointed out by Takebe-san.
Wed, 17 Jun 2009 12:12:05 +1000
* Up-port to xen-unstable.hg 19745:55ca7ef865b4
Index: xen-unstable.hg/tools/python/xen/util/pci.py
===================================================================
--- xen-unstable.hg.orig/tools/python/xen/util/pci.py 2009-06-17
13:07:51.000000000 +1000
+++ xen-unstable.hg/tools/python/xen/util/pci.py 2009-06-17
13:10:00.000000000 +1000
@@ -15,6 +15,7 @@ import time
import threading
from xen.util import utils
from xen.xend import sxp
+from xen.xend.XendConstants import AUTO_PHP_SLOT
PROC_PCI_PATH = '/proc/bus/pci/devices'
PROC_PCI_NUM_RESOURCES = 7
@@ -35,7 +36,6 @@ LSPCI_CMD = 'lspci'
PCI_DEV_REG_EXPRESS_STR = r"[0-9a-fA-F]{4}:[0-9a-fA-F]{2}:[0-9a-fA-F]{2}."+ \
r"[0-9a-fA-F]{1}"
-PCI_DEV_FORMAT_STR = '%04x:%02x:%02x.%01x'
DEV_TYPE_PCIe_ENDPOINT = 0
DEV_TYPE_PCIe_BRIDGE = 1
@@ -148,22 +148,62 @@ def parse_hex(val):
except ValueError:
return None
+def parse_pci_name_extended(pci_dev_str):
+ pci_match = re.match(r"((?P<domain>[0-9a-fA-F]{1,4})[:,])?" +
+ r"(?P<bus>[0-9a-fA-F]{1,2})[:,]" +
+ r"(?P<slot>[0-9a-fA-F]{1,2})[.,]" +
+ r"(?P<func>(\*|[0-7]))" +
+ r"(@(?P<vslot>[01]?[0-9a-fA-F]))?" +
+ r"(,(?P<opts>.*))?$", pci_dev_str)
+
+ if pci_match == None:
+ raise PciDeviceParseError("Failed to parse pci device: %s" %
+ pci_dev_str)
+
+ out = {}
+ pci_dev_info = pci_match.groupdict('')
+ if pci_dev_info['domain'] == '':
+ domain = 0
+ else:
+ domain = int(pci_dev_info['domain'], 16)
+ out['domain'] = "0x%04x" % domain
+ out['bus'] = "0x%02x" % int(pci_dev_info['bus'], 16)
+ out['slot'] = "0x%02x" % int(pci_dev_info['slot'], 16)
+ out['func'] = "0x%x" % int(pci_dev_info['func'], 16)
+ if pci_dev_info['vslot'] == '':
+ vslot = AUTO_PHP_SLOT
+ else:
+ vslot = int(pci_dev_info['vslot'], 16)
+ out['vslot'] = "0x%02x" % vslot
+ if pci_dev_info['opts'] != '':
+ out['opts'] = split_pci_opts(pci_dev_info['opts'])
+ check_pci_opts(out['opts'])
+
+ return out
+
def parse_pci_name(pci_name_string):
- pci_match = re.match(r"((?P<domain>[0-9a-fA-F]{1,4})[:,])?" + \
- r"(?P<bus>[0-9a-fA-F]{1,2})[:,]" + \
- r"(?P<slot>[0-9a-fA-F]{1,2})[.,]" + \
- r"(?P<func>[0-7])$", pci_name_string)
- if pci_match is None:
- raise PciDeviceParseError(('Failed to parse pci device name: %s' %
- pci_name_string))
- pci_dev_info = pci_match.groupdict('0')
-
- domain = parse_hex(pci_dev_info['domain'])
- bus = parse_hex(pci_dev_info['bus'])
- slot = parse_hex(pci_dev_info['slot'])
- func = parse_hex(pci_dev_info['func'])
+ pci = parse_pci_name_extended(pci_name_string)
+
+ if int(pci['vslot'], 16) != AUTO_PHP_SLOT:
+ raise PciDeviceParseError(("Failed to parse pci device: %s: " +
+ "vslot provided where prohibited: %s") %
+ (pci_name_string, pci['vslot']))
+ if 'opts' in pci:
+ raise PciDeviceParseError(("Failed to parse pci device: %s: " +
+ "options provided where prohibited: %s") %
+ (pci_name_string, pci['opts']))
+
+ return pci
+
+def __pci_dict_to_fmt_str(fmt, dev):
+ return fmt % (int(dev['domain'], 16), int(dev['bus'], 16),
+ int(dev['slot'], 16), int(dev['func'], 16))
- return (domain, bus, slot, func)
+def pci_dict_to_bdf_str(dev):
+ return __pci_dict_to_fmt_str('%04x:%02x:%02x.%01x', dev)
+
+def pci_dict_to_xc_str(dev):
+ return __pci_dict_to_fmt_str('0x%x, 0x%x, 0x%x, 0x%x', dev)
def extract_the_exact_pci_names(pci_names):
result = []
@@ -198,27 +238,7 @@ def get_all_pci_names():
return pci_names
def get_all_pci_devices():
- pci_devs = []
- for pci_name in get_all_pci_names():
- pci_match = re.match(r"((?P<domain>[0-9a-fA-F]{1,4})[:,])?" + \
- r"(?P<bus>[0-9a-fA-F]{1,2})[:,]" + \
- r"(?P<slot>[0-9a-fA-F]{1,2})[.,]" + \
- r"(?P<func>[0-7])$", pci_name)
- if pci_match is None:
- raise PciDeviceParseError(('Failed to parse pci device name: %s' %
- pci_name))
- pci_dev_info = pci_match.groupdict('0')
- domain = parse_hex(pci_dev_info['domain'])
- bus = parse_hex(pci_dev_info['bus'])
- slot = parse_hex(pci_dev_info['slot'])
- func = parse_hex(pci_dev_info['func'])
- try:
- pci_dev = PciDevice(domain, bus, slot, func)
- except:
- continue
- pci_devs.append(pci_dev)
-
- return pci_devs
+ return map(PciDevice, map(parse_pci_name, get_all_pci_names()))
def _create_lspci_info():
"""Execute 'lspci' command and parse the result.
@@ -241,7 +261,7 @@ def _create_lspci_info():
try:
(opt, value) = line.split(':\t')
if opt == 'Slot' or (opt == 'Device' and first_device):
- device_name = PCI_DEV_FORMAT_STR % parse_pci_name(value)
+ device_name = pci_dict_to_bdf_str(parse_pci_name(value))
first_device = False
else:
device_info[opt] = value
@@ -292,8 +312,7 @@ def find_all_devices_owned_by_pciback():
pci_list = extract_the_exact_pci_names(pci_names)
dev_list = []
for pci in pci_list:
- (dom, b, d, f) = parse_pci_name(pci)
- dev = PciDevice(dom, b, d, f)
+ dev = PciDevice(parse_pci_name(pci))
dev_list = dev_list + [dev]
return dev_list
@@ -400,12 +419,12 @@ class PciDeviceVslotMissing(Exception):
return 'pci: no vslot: ' + self.message
class PciDevice:
- def __init__(self, domain, bus, slot, func):
- self.domain = domain
- self.bus = bus
- self.slot = slot
- self.func = func
- self.name = PCI_DEV_FORMAT_STR % (domain, bus, slot, func)
+ def __init__(self, dev):
+ self.domain = int(dev['domain'], 16)
+ self.bus = int(dev['bus'], 16)
+ self.slot = int(dev['slot'], 16)
+ self.func = int(dev['func'], 16)
+ self.name = pci_dict_to_bdf_str(dev)
self.cfg_space_path = find_sysfs_mnt()+SYSFS_PCI_DEVS_PATH+'/'+ \
self.name + SYSFS_PCI_DEV_CONFIG_PATH
self.irq = 0
@@ -447,14 +466,15 @@ class PciDevice:
# We have reached the upmost one.
return None
else:
+ dev = {}
lst = parent.split(':')
- dom = int(lst[0], 16)
- bus = int(lst[1], 16)
+ dev['domain'] = int(lst[0], 16)
+ dev['bus'] = int(lst[1], 16)
lst = lst[2]
lst = lst.split('.')
- dev = int(lst[0], 16)
- func = int(lst[1], 16)
- return (dom, bus, dev, func)
+ dev['slot'] = int(lst[0], 16)
+ dev['func'] = int(lst[1], 16)
+ return dev
except OSError, (errno, strerr):
raise PciDeviceParseError('Can not locate the parent of %s',
self.name)
@@ -464,15 +484,13 @@ class PciDevice:
dev = self.find_parent()
if dev is None:
return None
- (dom, b, d, f) = dev
- dev = dev_parent = PciDevice(dom, b, d, f)
+ dev = dev_parent = PciDevice(dev)
while dev_parent.dev_type != DEV_TYPE_PCIe_BRIDGE:
parent = dev_parent.find_parent()
if parent is None:
break
- (dom, b, d, f) = parent
dev = dev_parent
- dev_parent = PciDevice(dom, b, d, f)
+ dev_parent = PciDevice(parent)
return dev
def find_all_devices_behind_the_bridge(self, ignore_bridge):
@@ -483,8 +501,7 @@ class PciDevice:
list = [self.name]
for pci_str in dev_list:
- (dom, b, d, f) = parse_pci_name(pci_str)
- dev = PciDevice(dom, b, d, f)
+ dev = PciDevice(parse_pci_name(pci_str))
if dev.dev_type == DEV_TYPE_PCI_BRIDGE or \
dev.dev_type == DEV_TYPE_PCIe_BRIDGE:
sub_list_including_self = \
@@ -600,7 +617,7 @@ class PciDevice:
def find_all_the_multi_functions(self):
sysfs_mnt = find_sysfs_mnt()
- parent = PCI_DEV_FORMAT_STR % self.find_parent()
+ parent = pci_dict_to_bdf_str(self.find_parent())
pci_names = os.popen('ls ' + sysfs_mnt + SYSFS_PCI_DEVS_PATH + '/' + \
parent + '/').read()
funcs = extract_the_exact_pci_names(pci_names)
@@ -758,8 +775,7 @@ class PciDevice:
if len(devs) == 0:
return
for pci_dev in devs:
- (dom, b, d, f) = parse_pci_name(pci_dev)
- dev = PciDevice(dom, b, d, f)
+ dev = PciDevice(parse_pci_name(pci_dev))
if dev.driver == 'pciback':
continue
err_msg = 'pci: %s must be co-assigned to the same guest with %s'
+ \
@@ -785,7 +801,7 @@ class PciDevice:
funcs = self.find_all_the_multi_functions()
self.devs_check_driver(funcs)
- parent = '%04x:%02x:%02x.%01x' % self.find_parent()
+ parent = pci_dict_to_bdf_str(self.find_parent())
# Do Secondary Bus Reset.
self.do_secondary_bus_reset(parent, funcs)
Index: xen-unstable.hg/tools/python/xen/xend/XendDomainInfo.py
===================================================================
--- xen-unstable.hg.orig/tools/python/xen/xend/XendDomainInfo.py
2009-06-17 13:07:51.000000000 +1000
+++ xen-unstable.hg/tools/python/xen/xend/XendDomainInfo.py 2009-06-17
13:10:00.000000000 +1000
@@ -39,7 +39,8 @@ from xen.util import asserts, auxbin
from xen.util.blkif import blkdev_uname_to_file, blkdev_uname_to_taptype
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
+from xen.util.pci import serialise_pci_opts, pci_opts_list_to_sxp, \
+ pci_dict_to_bdf_str, pci_dict_to_xc_str
from xen.xend import balloon, sxp, uuid, image, arch
from xen.xend import XendOptions, XendNode, XendConfig
@@ -310,9 +311,8 @@ def do_FLR(domid):
dev_str_list = get_assigned_pci_devices(domid)
for dev_str in dev_str_list:
- (dom, b, d, f) = parse_pci_name(dev_str)
try:
- dev = PciDevice(dom, b, d, f)
+ dev = PciDevice(parse_pci_name(dev_str))
except Exception, e:
raise VmError("pci: failed to locate device and "+
"parse it's resources - "+str(e))
@@ -652,23 +652,15 @@ class XendDomainInfo:
raise VmError("device is already inserted")
# Test whether the devices can be assigned with VT-d
- pci_str = "%s, %s, %s, %s" % (new_dev['domain'],
- new_dev['bus'],
- new_dev['slot'],
- new_dev['func'])
- bdf = xc.test_assign_device(0, pci_str)
+ bdf = xc.test_assign_device(0, pci_dict_to_xc_str(new_dev))
if bdf != 0:
if bdf == -1:
raise VmError("failed to assign device: maybe the platform"
" doesn't support VT-d, or VT-d isn't enabled"
" properly?")
- bus = (bdf >> 16) & 0xff
- devfn = (bdf >> 8) & 0xff
- dev = (devfn >> 3) & 0x1f
- func = devfn & 0x7
- raise VmError("fail to assign device(%x:%x.%x): maybe it has"
+ raise VmError("fail to assign device(%s): maybe it has"
" already been assigned to other domain, or maybe"
- " it doesn't exist." % (bus, dev, func))
+ " it doesn't exist." % pci_dict_to_bdf_str(new_dev))
# Here, we duplicate some checkings (in some cases, we mustn't allow
# a device to be hot-plugged into an HVM guest) that are also done in
@@ -680,12 +672,8 @@ class XendDomainInfo:
# Test whether the device is owned by pciback. For instance, we can't
# hotplug a device being used by Dom0 itself to an HVM guest.
from xen.xend.server.pciif import PciDevice, parse_pci_name
- domain = int(new_dev['domain'],16)
- bus = int(new_dev['bus'],16)
- dev = int(new_dev['slot'],16)
- func = int(new_dev['func'],16)
try:
- pci_device = PciDevice(domain, bus, dev, func)
+ pci_device = PciDevice(new_dev)
except Exception, e:
raise VmError("pci: failed to locate device and "+
"parse it's resources - "+str(e))
@@ -710,9 +698,8 @@ class XendDomainInfo:
pci_device.devs_check_driver(coassignment_list)
assigned_pci_device_str_list = self._get_assigned_pci_devices()
for pci_str in coassignment_list:
- (domain, bus, dev, func) = parse_pci_name(pci_str)
- dev_str = '0x%x,0x%x,0x%x,0x%x' % (domain, bus, dev, func)
- if xc.test_assign_device(0, dev_str) == 0:
+ pci_dev = parse_pci_name(pci_str)
+ if xc.test_assign_device(0, pci_dict_to_xc_str(pci_dev)) == 0:
continue
if not pci_str in assigned_pci_device_str_list:
raise VmError(("pci: failed to pci-attach %s to domain %s" + \
@@ -742,12 +729,9 @@ class XendDomainInfo:
if new_dev.has_key('opts'):
opts = ',' + serialise_pci_opts(new_dev['opts'])
- bdf_str = "%s:%s:%s.%s@%s%s" % (new_dev['domain'],
- new_dev['bus'],
- new_dev['slot'],
- new_dev['func'],
- new_dev['vslot'],
- opts)
+ bdf_str = "%s@%02x%s" % (pci_dict_to_bdf_str(new_dev),
+ int(new_dev['vslot'], 16), opts)
+ log.debug("XendDomainInfo.hvm_pci_device_insert_dev: %s" % bdf_str)
self.image.signalDeviceModel('pci-ins', 'pci-inserted', bdf_str)
vslot = xstransact.Read("/local/domain/0/device-model/%i/parameter"
@@ -864,9 +848,8 @@ class XendDomainInfo:
vslot = x['vslot']
break
if vslot == "":
- raise VmError("Device %04x:%02x:%02x.%01x is not connected"
- % (int(dev['domain'],16), int(dev['bus'],16),
- int(dev['slot'],16), int(dev['func'],16)))
+ raise VmError("Device %s is not connected" %
+ pci_dict_to_bdf_str(dev))
self.hvm_destroyPCIDevice(int(vslot, 16))
# Update vslot
dev['vslot'] = vslot
@@ -1152,12 +1135,8 @@ class XendDomainInfo:
# list of D's co-assignment devices, DD is not assigned (to domN).
#
from xen.xend.server.pciif import PciDevice
- domain = int(x['domain'],16)
- bus = int(x['bus'],16)
- dev = int(x['slot'],16)
- func = int(x['func'],16)
try:
- pci_device = PciDevice(domain, bus, dev, func)
+ pci_device = PciDevice(x)
except Exception, e:
raise VmError("pci: failed to locate device and "+
"parse it's resources - "+str(e))
@@ -1172,9 +1151,8 @@ class XendDomainInfo:
)% (pci_device.name, self.info['name_label'], pci_str))
- bdf_str = "%s:%s:%s.%s" % (x['domain'], x['bus'], x['slot'], x['func'])
+ bdf_str = pci_dict_to_bdf_str(x)
log.info("hvm_destroyPCIDevice:%s:%s!", x, bdf_str)
-
if self.domid is not None:
self.image.signalDeviceModel('pci-rem', 'pci-removed', bdf_str)
@@ -1338,21 +1316,12 @@ class XendDomainInfo:
if self.domid is not None:
return get_assigned_pci_devices(self.domid)
- dev_str_list = []
dev_info = self._getDeviceInfo_pci(devid)
if dev_info is None:
- return dev_str_list
+ return []
dev_uuid = sxp.child_value(dev_info, 'uuid')
pci_conf = self.info['devices'][dev_uuid][1]
- pci_devs = pci_conf['devs']
- for pci_dev in pci_devs:
- domain = int(pci_dev['domain'], 16)
- bus = int(pci_dev['bus'], 16)
- slot = int(pci_dev['slot'], 16)
- func = int(pci_dev['func'], 16)
- dev_str = "%04x:%02x:%02x.%01x" % (domain, bus, slot, func)
- dev_str_list = dev_str_list + [dev_str]
- return dev_str_list
+ return map(pci_dict_to_bdf_str, pci_conf['devs'])
def setMemoryTarget(self, target):
"""Set the memory target of this domain.
@@ -3909,12 +3878,12 @@ class XendDomainInfo:
target_dev = None
new_pci_sxp = ['pci']
for dev in sxp.children(old_pci_sxp, 'dev'):
- domain = int(sxp.child_value(dev, 'domain'), 16)
- bus = int(sxp.child_value(dev, 'bus'), 16)
- slot = int(sxp.child_value(dev, 'slot'), 16)
- func = int(sxp.child_value(dev, 'func'), 16)
- name = "%04x:%02x:%02x.%01x" % (domain, bus, slot, func)
- if ppci.get_name() == name:
+ pci_dev = {}
+ pci_dev['domain'] = sxp.child_value(dev, 'domain')
+ pci_dev['bus'] = sxp.child_value(dev, 'bus')
+ pci_dev['slot'] = sxp.child_value(dev, 'slot')
+ pci_dev['func'] = sxp.child_value(dev, 'func')
+ if ppci.get_name() == pci_dict_to_bdf_str(pci_dev):
target_dev = dev
else:
new_pci_sxp.append(dev)
Index: xen-unstable.hg/tools/python/xen/xend/XendNode.py
===================================================================
--- xen-unstable.hg.orig/tools/python/xen/xend/XendNode.py 2009-06-17
12:12:46.000000000 +1000
+++ xen-unstable.hg/tools/python/xen/xend/XendNode.py 2009-06-17
13:10:00.000000000 +1000
@@ -340,8 +340,7 @@ class XendNode:
except KeyError:
pass
- (domain, bus, slot, func) = PciUtil.parse_pci_name(pci_name)
- pci_dev = PciUtil.PciDevice(domain, bus, slot, func)
+ pci_dev = PciUtil.PciDevice(PciUtil.parse_pci_name(pci_name))
ppci_record = {
'domain': pci_dev.domain,
'bus': pci_dev.bus,
Index: xen-unstable.hg/tools/python/xen/xend/server/pciif.py
===================================================================
--- xen-unstable.hg.orig/tools/python/xen/xend/server/pciif.py 2009-06-17
13:07:51.000000000 +1000
+++ xen-unstable.hg/tools/python/xen/xend/server/pciif.py 2009-06-17
13:10:00.000000000 +1000
@@ -130,13 +130,7 @@ class PciController(DevController):
log.debug('Reconfiguring PCI device %s.' % dev)
attaching = False
- (domain, bus, slotfunc) = dev.split(':')
- (slot, func) = slotfunc.split('.')
- domain = parse_hex(domain)
- bus = parse_hex(bus)
- slot = parse_hex(slot)
- func = parse_hex(func)
- self.setupOneDevice(domain, bus, slot, func)
+ self.setupOneDevice(parse_pci_name(dev))
self.writeBackend(devid, 'dev-%i' % devno, dev)
self.writeBackend(devid, 'state-%i' % devno,
@@ -248,15 +242,13 @@ class PciController(DevController):
return
#group string format xx:xx.x,xx:xx.x,
- devstr_len = group_str.find(',')
- for i in range(0, len(group_str), devstr_len + 1):
- (bus, slotfunc) = group_str[i:i + devstr_len].split(':')
- (slot, func) = slotfunc.split('.')
- b = parse_hex(bus)
- d = parse_hex(slot)
- f = parse_hex(func)
+ for i in group_str.split(','):
+ if i == '':
+ continue
+ pci_dev = parse_pci_name(i)
+ pci_dev['domain'] = '%04x' % dev.domain
try:
- sdev = PciDevice(dev.domain, b, d, f)
+ sdev = PciDevice(pci_dev)
except Exception, e:
#no dom0 drivers bound to sdev
continue
@@ -270,13 +262,13 @@ class PciController(DevController):
)%(sdev.name, dev.name))
return
- def setupOneDevice(self, domain, bus, slot, func):
+ def setupOneDevice(self, pci_dev):
""" Attach I/O resources for device to frontend domain
"""
fe_domid = self.getDomid()
try:
- dev = PciDevice(domain, bus, slot, func)
+ dev = PciDevice(pci_dev)
except Exception, e:
raise VmError("pci: failed to locate device and "+
"parse it's resources - "+str(e))
@@ -305,12 +297,11 @@ class PciController(DevController):
if not self.vm.info.is_hvm():
# Setup IOMMU device assignment
- pci_str = "0x%x, 0x%x, 0x%x, 0x%x" % (domain, bus, slot, func)
- bdf = xc.assign_device(fe_domid, pci_str)
+ bdf = xc.assign_device(fe_domid, pci_dict_to_xc_str(pci_dev))
+ pci_str = pci_dict_to_bdf_str(pci_dev)
if bdf > 0:
- raise VmError("Failed to assign device to IOMMU (%x:%x.%x)"
- % (bus, slot, func))
- log.debug("pci: assign device %x:%x.%x" % (bus, slot, func))
+ raise VmError("Failed to assign device to IOMMU (%s)" %
pci_str)
+ log.debug("pci: assign device %s" % pci_str)
for (start, size) in dev.ioports:
log.debug('pci: enabling ioport 0x%x/0x%x'%(start,size))
@@ -366,23 +357,15 @@ class PciController(DevController):
def setupDevice(self, config):
"""Setup devices from config
"""
- pci_str_list = []
- pci_dev_list = []
- for pci_config in config.get('devs', []):
- domain = parse_hex(pci_config.get('domain', 0))
- bus = parse_hex(pci_config.get('bus', 0))
- slot = parse_hex(pci_config.get('slot', 0))
- func = parse_hex(pci_config.get('func', 0))
- pci_str = '%04x:%02x:%02x.%01x' % (domain, bus, slot, func)
- pci_str_list = pci_str_list + [pci_str]
- pci_dev_list = pci_dev_list + [(domain, bus, slot, func)]
+ pci_dev_list = config.get('devs', [])
+ pci_str_list = map(pci_dict_to_bdf_str, pci_dev_list)
if len(pci_str_list) != len(set(pci_str_list)):
raise VmError('pci: duplicate devices specified in guest config?')
- for (domain, bus, slot, func) in pci_dev_list:
+ for pci_dev in pci_dev_list:
try:
- dev = PciDevice(domain, bus, slot, func)
+ dev = PciDevice(pci_dev)
except Exception, e:
raise VmError("pci: failed to locate device and "+
"parse it's resources - "+str(e))
@@ -427,9 +410,7 @@ class PciController(DevController):
dev.devs_check_driver(devs_str)
for s in devs_str:
if not s in pci_str_list:
- (s_dom, s_bus, s_slot, s_func) = parse_pci_name(s)
- s_pci_str = '0x%x,0x%x,0x%x,0x%x' % \
- (s_dom, s_bus, s_slot, s_func)
+ s_pci_str = pci_dict_to_bdf_str(parse_pci_name(s))
# s has been assigned to other guest?
if xc.test_assign_device(0, s_pci_str) != 0:
err_msg = 'pci: %s must be co-assigned to
the'+\
@@ -453,13 +434,13 @@ class PciController(DevController):
return True
- def cleanupOneDevice(self, domain, bus, slot, func):
+ def cleanupOneDevice(self, pci_dev):
""" Detach I/O resources for device from frontend domain
"""
fe_domid = self.getDomid()
try:
- dev = PciDevice(domain, bus, slot, func)
+ dev = PciDevice(pci_dev)
except Exception, e:
raise VmError("pci: failed to locate device and "+
"parse it's resources - "+str(e))
@@ -476,12 +457,11 @@ class PciController(DevController):
# DMA transaction, etc
dev.do_FLR()
- pci_str = "0x%x, 0x%x, 0x%x, 0x%x" % (domain, bus, slot, func)
- bdf = xc.deassign_device(fe_domid, pci_str)
+ bdf = xc.deassign_device(fe_domid, pci_dict_to_xc_str(pci_dev))
+ pci_str = pci_dict_to_bdf_str(pci_dev)
if bdf > 0:
- raise VmError("Failed to deassign device from IOMMU (%x:%x.%x)"
- % (bus, slot, func))
- log.debug("pci: Deassign device %x:%x.%x" % (bus, slot, func))
+ raise VmError("Failed to deassign device from IOMMU (%s)" %
pci_str)
+ log.debug("pci: Deassign device %s" % pci_str)
for (start, size) in dev.ioports:
log.debug('pci: disabling ioport 0x%x/0x%x'%(start,size))
@@ -530,15 +510,9 @@ class PciController(DevController):
state = int(self.readBackend(devid, 'state-%i' % i))
if state == xenbusState['Closing']:
# Detach I/O resources.
- dev = self.readBackend(devid, 'dev-%i' % i)
- (domain, bus, slotfunc) = dev.split(':')
- (slot, func) = slotfunc.split('.')
- domain = parse_hex(domain)
- bus = parse_hex(bus)
- slot = parse_hex(slot)
- func = parse_hex(func)
+ pci_dev = parse_pci_name(self.readBackend(devid, 'dev-%i' % i))
# In HVM case, I/O resources are disabled in ioemu.
- self.cleanupOneDevice(domain, bus, slot, func)
+ self.cleanupOneDevice(pci_dev)
# Remove xenstore nodes.
list = ['dev', 'vdev', 'state', 'uuid', 'vslot']
if self.readBackend(devid, 'opts-%i' % i) is not None:
--
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