def _release_dev(self, pci_id):
"""
Release a single PCI device.
@param pci_id: PCI ID of a given PCI device.
"""
base_dir = "/sys/bus/pci"
full_id = utils_misc.get_full_pci_id(pci_id)
vendor_id = utils_misc.get_vendor_from_pci_id(pci_id)
drv_path = os.path.join(base_dir, "devices/%s/driver" % full_id)
if 'pci-stub' in os.readlink(drv_path):
error.context("Release device %s to host" % pci_id, logging.info)
driver = self.dev_unbind_drivers[pci_id]
cmd = "echo '%s' > %s/new_id" % (vendor_id, driver)
logging.info("Run command in host: %s" % cmd)
if os.system(cmd):
return False
stub_path = os.path.join(base_dir, "drivers/pci-stub")
cmd = "echo '%s' > %s/unbind" % (full_id, stub_path)
logging.info("Run command in host: %s" % cmd)
if os.system(cmd):
return False
driver = self.dev_unbind_drivers[pci_id]
cmd = "echo '%s' > %s/bind" % (full_id, driver)
logging.info("Run command in host: %s" % cmd)
if os.system(cmd):
return False
return True
def _release_dev(self, pci_id):
"""
Release a single PCI device.
:param pci_id: PCI ID of a given PCI device.
:type pci_id: string
:return: True if successfully release the device. else false.
:rtype: bool
"""
base_dir = "/sys/bus/pci"
short_id = pci_id[5:]
vendor_id = utils_misc.get_vendor_from_pci_id(short_id)
drv_path = os.path.join(base_dir, "devices/%s/driver" % pci_id)
if self.device_driver in os.readlink(drv_path):
error.context("Release device %s to host" % pci_id, logging.info)
driver = self.dev_unbind_drivers[pci_id]
cmd = "echo '%s' > %s/new_id" % (vendor_id, driver)
logging.info("Run command in host: %s" % cmd)
if os.system(cmd):
return False
stub_path = os.path.join(base_dir, "drivers/%s" % self.device_driver)
cmd = "echo '%s' > %s/unbind" % (pci_id, stub_path)
logging.info("Run command in host: %s" % cmd)
if os.system(cmd):
return False
driver = self.dev_unbind_drivers[pci_id]
cmd = "echo '%s' > %s/bind" % (pci_id, driver)
logging.info("Run command in host: %s" % cmd)
if os.system(cmd):
return False
if self.is_binded_to_stub(pci_id):
return False
return True
def _release_dev(self, pci_id):
"""
Release a single PCI device.
@param pci_id: PCI ID of a given PCI device.
"""
base_dir = "/sys/bus/pci"
full_id = utils_misc.get_full_pci_id(pci_id)
vendor_id = utils_misc.get_vendor_from_pci_id(pci_id)
drv_path = os.path.join(base_dir, "devices/%s/driver" % full_id)
if 'pci-stub' in os.readlink(drv_path):
error.context("Release device %s to host" % pci_id, logging.info)
driver = self.dev_unbind_drivers[pci_id]
cmd = "echo '%s' > %s/new_id" % (vendor_id, driver)
logging.info("Run command in host: %s" % cmd)
if os.system(cmd):
return False
stub_path = os.path.join(base_dir, "drivers/pci-stub")
cmd = "echo '%s' > %s/unbind" % (full_id, stub_path)
logging.info("Run command in host: %s" % cmd)
if os.system(cmd):
return False
driver = self.dev_unbind_drivers[pci_id]
cmd = "echo '%s' > %s/bind" % (full_id, driver)
logging.info("Run command in host: %s" % cmd)
if os.system(cmd):
return False
return True
def _release_dev(self, pci_id):
"""
Release a single PCI device.
@param pci_id: PCI ID of a given PCI device.
"""
base_dir = "/sys/bus/pci"
full_id = utils_misc.get_full_pci_id(pci_id)
vendor_id = utils_misc.get_vendor_from_pci_id(pci_id)
drv_path = os.path.join(base_dir, "devices/%s/driver" % full_id)
if 'pci-stub' in os.readlink(drv_path):
cmd = "echo '%s' > %s/new_id" % (vendor_id, drv_path)
if os.system(cmd):
return False
stub_path = os.path.join(base_dir, "drivers/pci-stub")
cmd = "echo '%s' > %s/unbind" % (full_id, stub_path)
if os.system(cmd):
return False
driver = self.dev_drivers[pci_id]
cmd = "echo '%s' > %s/bind" % (full_id, driver)
if os.system(cmd):
return False
return True
def request_devs(self, devices=None):
"""
Implement setup process: unbind the PCI device and then bind it
to the device driver.
:param devices: List of device dict
:type devices: List of dict
:return: List of successfully requested devices' PCI IDs.
:rtype: List of string
"""
if not self.pf_vf_info:
self.pf_vf_info = self.get_pf_vf_info()
base_dir = "/sys/bus/pci"
stub_path = os.path.join(base_dir, "drivers/%s" % self.device_driver)
self.pci_ids = self.get_devs(devices)
logging.info("The following pci_ids were found: %s", self.pci_ids)
requested_pci_ids = []
# Setup all devices specified for assignment to guest
for p_id in self.pci_ids:
if self.device_driver == "vfio-pci":
pci_ids = self.get_same_group_devs(p_id)
logging.info("Following devices are in same group: %s", pci_ids)
else:
pci_ids = [p_id]
for pci_id in pci_ids:
short_id = pci_id[5:]
drv_path = os.path.join(base_dir, "devices/%s/driver" % pci_id)
dev_prev_driver = os.path.realpath(os.path.join(drv_path, os.readlink(drv_path)))
self.dev_drivers[pci_id] = dev_prev_driver
# Judge whether the device driver has been binded to stub
if not self.is_binded_to_stub(pci_id):
error.context("Bind device %s to stub" % pci_id, logging.info)
vendor_id = utils_misc.get_vendor_from_pci_id(short_id)
stub_new_id = os.path.join(stub_path, "new_id")
unbind_dev = os.path.join(drv_path, "unbind")
stub_bind = os.path.join(stub_path, "bind")
info_write_to_files = [(vendor_id, stub_new_id), (pci_id, unbind_dev), (pci_id, stub_bind)]
for content, f_name in info_write_to_files:
try:
logging.info("Write '%s' to file '%s'", content, f_name)
utils.open_write_close(f_name, content)
except IOError:
logging.debug("Failed to write %s to file %s", content, f_name)
continue
if not self.is_binded_to_stub(pci_id):
logging.error("Binding device %s to stub failed", pci_id)
continue
else:
logging.debug("Device %s already binded to stub", pci_id)
requested_pci_ids.append(p_id)
return requested_pci_ids
def request_devs(self, count=None):
"""
Implement setup process: unbind the PCI device and then bind it
to the pci-stub driver.
@param count: count number of PCI devices needed for pass through
@return: a list of successfully requested devices' PCI IDs.
"""
if count is None:
count = self.devices_requested
base_dir = "/sys/bus/pci"
stub_path = os.path.join(base_dir, "drivers/pci-stub")
self.pci_ids = self.get_devs(count)
logging.info("The following pci_ids were found: %s", self.pci_ids)
requested_pci_ids = []
# Setup all devices specified for assignment to guest
for pci_id in self.pci_ids:
full_id = utils_misc.get_full_pci_id(pci_id)
if not full_id:
continue
drv_path = os.path.join(base_dir, "devices/%s/driver" % full_id)
dev_prev_driver = os.path.realpath(
os.path.join(drv_path, os.readlink(drv_path)))
self.dev_drivers[pci_id] = dev_prev_driver
# Judge whether the device driver has been binded to stub
if not self.is_binded_to_stub(full_id):
error.context("Bind device %s to stub" % full_id, logging.info)
vendor_id = utils_misc.get_vendor_from_pci_id(pci_id)
stub_new_id = os.path.join(stub_path, 'new_id')
unbind_dev = os.path.join(drv_path, 'unbind')
stub_bind = os.path.join(stub_path, 'bind')
info_write_to_files = [(vendor_id, stub_new_id),
(full_id, unbind_dev),
(full_id, stub_bind)]
for content, file in info_write_to_files:
try:
utils.open_write_close(file, content)
except IOError:
logging.debug("Failed to write %s to file %s", content,
file)
continue
if not self.is_binded_to_stub(full_id):
logging.error("Binding device %s to stub failed", pci_id)
continue
else:
logging.debug("Device %s already binded to stub", pci_id)
requested_pci_ids.append(pci_id)
return requested_pci_ids
def request_devs(self, count=None):
"""
Implement setup process: unbind the PCI device and then bind it
to the pci-stub driver.
@param count: count number of PCI devices needed for pass through
@return: a list of successfully requested devices' PCI IDs.
"""
if count is None:
count = self.devices_requested
base_dir = "/sys/bus/pci"
stub_path = os.path.join(base_dir, "drivers/pci-stub")
self.pci_ids = self.get_devs(count)
logging.info("The following pci_ids were found: %s", self.pci_ids)
requested_pci_ids = []
# Setup all devices specified for assignment to guest
for pci_id in self.pci_ids:
full_id = utils_misc.get_full_pci_id(pci_id)
if not full_id:
continue
drv_path = os.path.join(base_dir, "devices/%s/driver" % full_id)
dev_prev_driver = os.path.realpath(os.path.join(drv_path,
os.readlink(drv_path)))
self.dev_drivers[pci_id] = dev_prev_driver
# Judge whether the device driver has been binded to stub
if not self.is_binded_to_stub(full_id):
error.context("Bind device %s to stub" % full_id, logging.info)
vendor_id = utils_misc.get_vendor_from_pci_id(pci_id)
stub_new_id = os.path.join(stub_path, 'new_id')
unbind_dev = os.path.join(drv_path, 'unbind')
stub_bind = os.path.join(stub_path, 'bind')
info_write_to_files = [(vendor_id, stub_new_id),
(full_id, unbind_dev),
(full_id, stub_bind)]
for content, file in info_write_to_files:
try:
utils.open_write_close(file, content)
except IOError:
logging.debug("Failed to write %s to file %s", content,
file)
continue
if not self.is_binded_to_stub(full_id):
logging.error("Binding device %s to stub failed", pci_id)
continue
else:
logging.debug("Device %s already binded to stub", pci_id)
requested_pci_ids.append(pci_id)
return requested_pci_ids
def _release_dev(self, pci_id):
"""
Release a single PCI device.
:param pci_id: PCI ID of a given PCI device.
:type pci_id: string
:return: True if successfully release the device. else false.
:rtype: bool
"""
base_dir = "/sys/bus/pci"
short_id = pci_id[5:]
vendor_id = utils_misc.get_vendor_from_pci_id(short_id)
drv_path = os.path.join(base_dir, "devices/%s/driver" % pci_id)
if self.device_driver in os.readlink(drv_path):
error.context("Release device %s to host" % pci_id, logging.info)
driver = self.dev_unbind_drivers[pci_id]
cmd = "echo '%s' > %s/new_id" % (vendor_id, driver)
logging.info("Run command in host: %s" % cmd)
try:
output = utils.system_output(cmd, timeout=60)
except error.CmdError:
msg = "Command %s fail with output %s" % (cmd, output)
logging.error(msg)
return False
stub_path = os.path.join(base_dir,
"drivers/%s" % self.device_driver)
cmd = "echo '%s' > %s/unbind" % (pci_id, stub_path)
logging.info("Run command in host: %s" % cmd)
try:
output = utils.system_output(cmd, timeout=60)
except error.CmdError:
msg = "Command %s fail with output %s" % (cmd, output)
logging.error(msg)
return False
driver = self.dev_unbind_drivers[pci_id]
cmd = "echo '%s' > %s/bind" % (pci_id, driver)
logging.info("Run command in host: %s" % cmd)
try:
output = utils.system_output(cmd, timeout=60)
except error.CmdError:
msg = "Command %s fail with output %s" % (cmd, output)
logging.error(msg)
return False
if self.is_binded_to_stub(pci_id):
return False
return True
def request_devs(self, devices=None):
"""
Implement setup process: unbind the PCI device and then bind it
to the device driver.
:param devices: List of device dict
:type devices: List of dict
:return: List of successfully requested devices' PCI IDs.
:rtype: List of string
"""
if not self.pf_vf_info:
self.pf_vf_info = self.get_pf_vf_info()
base_dir = "/sys/bus/pci"
stub_path = os.path.join(base_dir, "drivers/%s" % self.device_driver)
self.pci_ids = self.get_devs(devices)
logging.info("The following pci_ids were found: %s", self.pci_ids)
requested_pci_ids = []
# Setup all devices specified for assignment to guest
for p_id in self.pci_ids:
if self.device_driver == "vfio-pci":
pci_ids = self.get_same_group_devs(p_id)
logging.info("Following devices are in same group: %s", pci_ids)
else:
pci_ids = [p_id]
for pci_id in pci_ids:
short_id = pci_id[5:]
drv_path = os.path.join(base_dir, "devices/%s/driver" % pci_id)
dev_prev_driver = os.path.realpath(os.path.join(drv_path,
os.readlink(drv_path)))
self.dev_drivers[pci_id] = dev_prev_driver
# Judge whether the device driver has been binded to stub
if not self.is_binded_to_stub(pci_id):
error.context("Bind device %s to stub" % pci_id,
logging.info)
vendor_id = utils_misc.get_vendor_from_pci_id(short_id)
stub_new_id = os.path.join(stub_path, 'new_id')
unbind_dev = os.path.join(drv_path, 'unbind')
stub_bind = os.path.join(stub_path, 'bind')
info_write_to_files = [(vendor_id, stub_new_id),
(pci_id, unbind_dev),
(pci_id, stub_bind)]
for content, f_name in info_write_to_files:
try:
logging.info("Write '%s' to file '%s'", content,
f_name)
utils.open_write_close(f_name, content)
except IOError:
logging.debug("Failed to write %s to file %s",
content, f_name)
continue
if not self.is_binded_to_stub(pci_id):
logging.error("Binding device %s to stub failed", pci_id)
continue
else:
logging.debug("Device %s already binded to stub", pci_id)
requested_pci_ids.append(p_id)
return requested_pci_ids
