2 # SPDX-License-Identifier: BSD-3-Clause
3 # Copyright(c) 2010-2014 Intel Corporation
13 from os.path import exists, basename
14 from os.path import join as path_join
16 # The PCI base class for all devices
17 network_class = {'Class': '02', 'Vendor': None, 'Device': None,
18 'SVendor': None, 'SDevice': None}
19 acceleration_class = {'Class': '12', 'Vendor': None, 'Device': None,
20 'SVendor': None, 'SDevice': None}
21 ifpga_class = {'Class': '12', 'Vendor': '8086', 'Device': '0b30',
22 'SVendor': None, 'SDevice': None}
23 encryption_class = {'Class': '10', 'Vendor': None, 'Device': None,
24 'SVendor': None, 'SDevice': None}
25 intel_processor_class = {'Class': '0b', 'Vendor': '8086', 'Device': None,
26 'SVendor': None, 'SDevice': None}
27 cavium_sso = {'Class': '08', 'Vendor': '177d', 'Device': 'a04b,a04d',
28 'SVendor': None, 'SDevice': None}
29 cavium_fpa = {'Class': '08', 'Vendor': '177d', 'Device': 'a053',
30 'SVendor': None, 'SDevice': None}
31 cavium_pkx = {'Class': '08', 'Vendor': '177d', 'Device': 'a0dd,a049',
32 'SVendor': None, 'SDevice': None}
33 cavium_tim = {'Class': '08', 'Vendor': '177d', 'Device': 'a051',
34 'SVendor': None, 'SDevice': None}
35 cavium_zip = {'Class': '12', 'Vendor': '177d', 'Device': 'a037',
36 'SVendor': None, 'SDevice': None}
37 avp_vnic = {'Class': '05', 'Vendor': '1af4', 'Device': '1110',
38 'SVendor': None, 'SDevice': None}
40 cnxk_bphy = {'Class': '08', 'Vendor': '177d', 'Device': 'a089',
41 'SVendor': None, 'SDevice': None}
42 cnxk_bphy_cgx = {'Class': '08', 'Vendor': '177d', 'Device': 'a059,a060',
43 'SVendor': None, 'SDevice': None}
44 cnxk_dma = {'Class': '08', 'Vendor': '177d', 'Device': 'a081',
45 'SVendor': None, 'SDevice': None}
46 cnxk_inl_dev = {'Class': '08', 'Vendor': '177d', 'Device': 'a0f0,a0f1',
47 'SVendor': None, 'SDevice': None}
49 hisilicon_dma = {'Class': '08', 'Vendor': '19e5', 'Device': 'a122',
50 'SVendor': None, 'SDevice': None}
52 intel_dlb = {'Class': '0b', 'Vendor': '8086', 'Device': '270b,2710,2714',
53 'SVendor': None, 'SDevice': None}
54 intel_ioat_bdw = {'Class': '08', 'Vendor': '8086',
55 'Device': '6f20,6f21,6f22,6f23,6f24,6f25,6f26,6f27,6f2e,6f2f',
56 'SVendor': None, 'SDevice': None}
57 intel_ioat_skx = {'Class': '08', 'Vendor': '8086', 'Device': '2021',
58 'SVendor': None, 'SDevice': None}
59 intel_ioat_icx = {'Class': '08', 'Vendor': '8086', 'Device': '0b00',
60 'SVendor': None, 'SDevice': None}
61 intel_idxd_spr = {'Class': '08', 'Vendor': '8086', 'Device': '0b25',
62 'SVendor': None, 'SDevice': None}
63 intel_ntb_skx = {'Class': '06', 'Vendor': '8086', 'Device': '201c',
64 'SVendor': None, 'SDevice': None}
65 intel_ntb_icx = {'Class': '06', 'Vendor': '8086', 'Device': '347e',
66 'SVendor': None, 'SDevice': None}
68 octeontx2_sso = {'Class': '08', 'Vendor': '177d', 'Device': 'a0f9,a0fa',
69 'SVendor': None, 'SDevice': None}
70 octeontx2_npa = {'Class': '08', 'Vendor': '177d', 'Device': 'a0fb,a0fc',
71 'SVendor': None, 'SDevice': None}
72 octeontx2_ree = {'Class': '08', 'Vendor': '177d', 'Device': 'a0f4',
73 'SVendor': None, 'SDevice': None}
75 network_devices = [network_class, cavium_pkx, avp_vnic, ifpga_class]
76 baseband_devices = [acceleration_class]
77 crypto_devices = [encryption_class, intel_processor_class]
78 dma_devices = [cnxk_dma, hisilicon_dma,
79 intel_idxd_spr, intel_ioat_bdw, intel_ioat_icx, intel_ioat_skx]
80 eventdev_devices = [cavium_sso, cavium_tim, intel_dlb, octeontx2_sso]
81 mempool_devices = [cavium_fpa, octeontx2_npa]
82 compress_devices = [cavium_zip]
83 regex_devices = [octeontx2_ree]
84 misc_devices = [cnxk_bphy, cnxk_bphy_cgx, cnxk_inl_dev,
85 intel_ntb_skx, intel_ntb_icx]
87 # global dict ethernet devices present. Dictionary indexed by PCI address.
88 # Each device within this is itself a dictionary of device properties
90 # list of supported DPDK drivers
91 dpdk_drivers = ["igb_uio", "vfio-pci", "uio_pci_generic"]
92 # list of currently loaded kernel modules
95 # command-line arg flags
102 # check if a specific kernel module is loaded
103 def module_is_loaded(module):
104 global loaded_modules
106 if module == 'vfio_pci':
110 return module in loaded_modules
112 # Get list of sysfs modules (both built-in and dynamically loaded)
113 sysfs_path = '/sys/module/'
115 # Get the list of directories in sysfs_path
116 sysfs_mods = [m for m in os.listdir(sysfs_path)
117 if os.path.isdir(os.path.join(sysfs_path, m))]
119 # special case for vfio_pci (module is named vfio-pci,
120 # but its .ko is named vfio_pci)
121 sysfs_mods = [a if a != 'vfio_pci' else 'vfio-pci' for a in sysfs_mods]
123 loaded_modules = sysfs_mods
125 # add built-in modules as loaded
126 release = platform.uname().release
127 filename = os.path.join("/lib/modules/", release, "modules.builtin")
128 if os.path.exists(filename):
130 with open(filename) as f:
131 loaded_modules += [os.path.splitext(os.path.basename(mod))[0] for mod in f]
133 print("Warning: cannot read list of built-in kernel modules")
135 return module in loaded_modules
139 '''Checks that igb_uio is loaded'''
142 # list of supported modules
143 mods = [{"Name": driver, "Found": False} for driver in dpdk_drivers]
145 # first check if module is loaded
147 if module_is_loaded(mod["Name"]):
150 # check if we have at least one loaded module
151 if True not in [mod["Found"] for mod in mods] and b_flag is not None:
152 print("Warning: no supported DPDK kernel modules are loaded", file=sys.stderr)
154 # change DPDK driver list to only contain drivers that are loaded
155 dpdk_drivers = [mod["Name"] for mod in mods if mod["Found"]]
158 def has_driver(dev_id):
159 '''return true if a device is assigned to a driver. False otherwise'''
160 return "Driver_str" in devices[dev_id]
163 def get_pci_device_details(dev_id, probe_lspci):
164 '''This function gets additional details for a PCI device'''
168 extra_info = subprocess.check_output(["lspci", "-vmmks", dev_id]).splitlines()
169 # parse lspci details
170 for line in extra_info:
173 name, value = line.decode("utf8").split("\t", 1)
174 name = name.strip(":") + "_str"
176 # check for a unix interface name
177 device["Interface"] = ""
178 for base, dirs, _ in os.walk("/sys/bus/pci/devices/%s/" % dev_id):
180 device["Interface"] = \
181 ",".join(os.listdir(os.path.join(base, "net")))
183 # check if a port is used for ssh connection
184 device["Ssh_if"] = False
185 device["Active"] = ""
191 '''This function clears any old data'''
196 def get_device_details(devices_type):
197 '''This function populates the "devices" dictionary. The keys used are
198 the pci addresses (domain:bus:slot.func). The values are themselves
199 dictionaries - one for each NIC.'''
203 # first loop through and read details for all devices
204 # request machine readable format, with numeric IDs and String
206 dev_lines = subprocess.check_output(["lspci", "-Dvmmnnk"]).splitlines()
207 for dev_line in dev_lines:
209 if device_type_match(dev, devices_type):
210 # Replace "Driver" with "Driver_str" to have consistency of
211 # of dictionary key names
212 if "Driver" in dev.keys():
213 dev["Driver_str"] = dev.pop("Driver")
214 if "Module" in dev.keys():
215 dev["Module_str"] = dev.pop("Module")
216 # use dict to make copy of dev
217 devices[dev["Slot"]] = dict(dev)
218 # Clear previous device's data
221 name, value = dev_line.decode("utf8").split("\t", 1)
222 value_list = value.rsplit(' ', 1)
224 # String stored in <name>_str
225 dev[name.rstrip(":") + '_str'] = value_list[0]
227 dev[name.rstrip(":")] = value_list[len(value_list) - 1] \
228 .rstrip("]").lstrip("[")
230 if devices_type == network_devices:
231 # check what is the interface if any for an ssh connection if
232 # any to this host, so we can mark it later.
234 route = subprocess.check_output(["ip", "-o", "route"])
235 # filter out all lines for 169.254 routes
236 route = "\n".join(filter(lambda ln: not ln.startswith("169.254"),
237 route.decode().splitlines()))
238 rt_info = route.split()
239 for i in range(len(rt_info) - 1):
240 if rt_info[i] == "dev":
241 ssh_if.append(rt_info[i + 1])
243 # based on the basic info, get extended text details
244 for d in devices.keys():
245 if not device_type_match(devices[d], devices_type):
248 # get additional info and add it to existing data
249 devices[d] = devices[d].copy()
250 # No need to probe lspci
251 devices[d].update(get_pci_device_details(d, False).items())
253 if devices_type == network_devices:
255 if _if in devices[d]["Interface"].split(","):
256 devices[d]["Ssh_if"] = True
257 devices[d]["Active"] = "*Active*"
260 # add igb_uio to list of supporting modules if needed
261 if "Module_str" in devices[d]:
262 for driver in dpdk_drivers:
263 if driver not in devices[d]["Module_str"]:
264 devices[d]["Module_str"] = \
265 devices[d]["Module_str"] + ",%s" % driver
267 devices[d]["Module_str"] = ",".join(dpdk_drivers)
269 # make sure the driver and module strings do not have any duplicates
271 modules = devices[d]["Module_str"].split(",")
272 if devices[d]["Driver_str"] in modules:
273 modules.remove(devices[d]["Driver_str"])
274 devices[d]["Module_str"] = ",".join(modules)
277 def device_type_match(dev, devices_type):
278 for i in range(len(devices_type)):
280 [x for x in devices_type[i].values() if x is not None])
282 if dev["Class"][0:2] == devices_type[i]["Class"]:
283 match_count = match_count + 1
284 for key in devices_type[i].keys():
285 if key != 'Class' and devices_type[i][key]:
286 value_list = devices_type[i][key].split(',')
287 for value in value_list:
288 if value.strip(' ') == dev[key]:
289 match_count = match_count + 1
290 # count must be the number of non None parameters to match
291 if match_count == param_count:
296 def dev_id_from_dev_name(dev_name):
297 '''Take a device "name" - a string passed in by user to identify a NIC
298 device, and determine the device id - i.e. the domain:bus:slot.func - for
299 it, which can then be used to index into the devices array'''
301 # check if it's already a suitable index
302 if dev_name in devices:
304 # check if it's an index just missing the domain part
305 if "0000:" + dev_name in devices:
306 return "0000:" + dev_name
308 # check if it's an interface name, e.g. eth1
309 for d in devices.keys():
310 if dev_name in devices[d]["Interface"].split(","):
311 return devices[d]["Slot"]
312 # if nothing else matches - error
313 raise ValueError("Unknown device: %s. "
314 "Please specify device in \"bus:slot.func\" format" % dev_name)
317 def unbind_one(dev_id, force):
318 '''Unbind the device identified by "dev_id" from its current driver'''
319 dev = devices[dev_id]
320 if not has_driver(dev_id):
321 print("Notice: %s %s %s is not currently managed by any driver" %
322 (dev["Slot"], dev["Device_str"], dev["Interface"]), file=sys.stderr)
325 # prevent us disconnecting ourselves
326 if dev["Ssh_if"] and not force:
327 print("Warning: routing table indicates that interface %s is active. "
328 "Skipping unbind" % dev_id, file=sys.stderr)
331 # write to /sys to unbind
332 filename = "/sys/bus/pci/drivers/%s/unbind" % dev["Driver_str"]
334 f = open(filename, "a")
335 except OSError as err:
336 sys.exit("Error: unbind failed for %s - Cannot open %s: %s" %
337 (dev_id, filename, err))
342 def bind_one(dev_id, driver, force):
343 '''Bind the device given by "dev_id" to the driver "driver". If the device
344 is already bound to a different driver, it will be unbound first'''
345 dev = devices[dev_id]
346 saved_driver = None # used to rollback any unbind in case of failure
348 # prevent disconnection of our ssh session
349 if dev["Ssh_if"] and not force:
350 print("Warning: routing table indicates that interface %s is active. "
351 "Not modifying" % dev_id, file=sys.stderr)
354 # unbind any existing drivers we don't want
355 if has_driver(dev_id):
356 if dev["Driver_str"] == driver:
357 print("Notice: %s already bound to driver %s, skipping" %
358 (dev_id, driver), file=sys.stderr)
360 saved_driver = dev["Driver_str"]
361 unbind_one(dev_id, force)
362 dev["Driver_str"] = "" # clear driver string
364 # For kernels >= 3.15 driver_override can be used to specify the driver
365 # for a device rather than relying on the driver to provide a positive
366 # match of the device. The existing process of looking up
367 # the vendor and device ID, adding them to the driver new_id,
368 # will erroneously bind other devices too which has the additional burden
369 # of unbinding those devices
370 if driver in dpdk_drivers:
371 filename = "/sys/bus/pci/devices/%s/driver_override" % dev_id
374 f = open(filename, "w")
375 except OSError as err:
376 print("Error: bind failed for %s - Cannot open %s: %s"
377 % (dev_id, filename, err), file=sys.stderr)
380 f.write("%s" % driver)
382 except OSError as err:
383 print("Error: bind failed for %s - Cannot write driver %s to "
384 "PCI ID: %s" % (dev_id, driver, err), file=sys.stderr)
386 # For kernels < 3.15 use new_id to add PCI id's to the driver
388 filename = "/sys/bus/pci/drivers/%s/new_id" % driver
390 f = open(filename, "w")
391 except OSError as err:
392 print("Error: bind failed for %s - Cannot open %s: %s"
393 % (dev_id, filename, err), file=sys.stderr)
396 # Convert Device and Vendor Id to int to write to new_id
397 f.write("%04x %04x" % (int(dev["Vendor"], 16),
398 int(dev["Device"], 16)))
400 except OSError as err:
401 print("Error: bind failed for %s - Cannot write new PCI ID to "
402 "driver %s: %s" % (dev_id, driver, err), file=sys.stderr)
405 # do the bind by writing to /sys
406 filename = "/sys/bus/pci/drivers/%s/bind" % driver
408 f = open(filename, "a")
409 except OSError as err:
410 print("Error: bind failed for %s - Cannot open %s: %s"
411 % (dev_id, filename, err), file=sys.stderr)
412 if saved_driver is not None: # restore any previous driver
413 bind_one(dev_id, saved_driver, force)
418 except OSError as err:
419 # for some reason, closing dev_id after adding a new PCI ID to new_id
420 # results in IOError. however, if the device was successfully bound,
421 # we don't care for any errors and can safely ignore IOError
422 tmp = get_pci_device_details(dev_id, True)
423 if "Driver_str" in tmp and tmp["Driver_str"] == driver:
425 print("Error: bind failed for %s - Cannot bind to driver %s: %s"
426 % (dev_id, driver, err), file=sys.stderr)
427 if saved_driver is not None: # restore any previous driver
428 bind_one(dev_id, saved_driver, force)
431 # For kernels > 3.15 driver_override is used to bind a device to a driver.
432 # Before unbinding it, overwrite driver_override with empty string so that
433 # the device can be bound to any other driver
434 filename = "/sys/bus/pci/devices/%s/driver_override" % dev_id
437 f = open(filename, "w")
438 except OSError as err:
439 sys.exit("Error: unbind failed for %s - Cannot open %s: %s"
440 % (dev_id, filename, err))
444 except OSError as err:
445 sys.exit("Error: unbind failed for %s - Cannot write %s: %s"
446 % (dev_id, filename, err))
449 def unbind_all(dev_list, force=False):
450 """Unbind method, takes a list of device locations"""
452 if dev_list[0] == "dpdk":
453 for d in devices.keys():
454 if "Driver_str" in devices[d]:
455 if devices[d]["Driver_str"] in dpdk_drivers:
456 unbind_one(devices[d]["Slot"], force)
460 dev_list = map(dev_id_from_dev_name, dev_list)
461 except ValueError as ex:
469 def bind_all(dev_list, driver, force=False):
470 """Bind method, takes a list of device locations"""
473 # a common user error is to forget to specify the driver the devices need to
474 # be bound to. check if the driver is a valid device, and if it is, show
475 # a meaningful error.
477 dev_id_from_dev_name(driver)
478 # if we've made it this far, this means that the "driver" was a valid
479 # device string, so it's probably not a valid driver name.
480 sys.exit("Error: Driver '%s' does not look like a valid driver. "
481 "Did you forget to specify the driver to bind devices to?" % driver)
483 # driver generated error - it's not a valid device ID, so all is well
486 # check if we're attempting to bind to a driver that isn't loaded
487 if not module_is_loaded(driver.replace('-', '_')):
488 sys.exit("Error: Driver '%s' is not loaded." % driver)
491 dev_list = map(dev_id_from_dev_name, dev_list)
492 except ValueError as ex:
496 bind_one(d, driver, force)
498 # For kernels < 3.15 when binding devices to a generic driver
499 # (i.e. one that doesn't have a PCI ID table) using new_id, some devices
500 # that are not bound to any other driver could be bound even if no one has
501 # asked them to. hence, we check the list of drivers again, and see if
502 # some of the previously-unbound devices were erroneously bound.
503 if not exists("/sys/bus/pci/devices/%s/driver_override" % d):
504 for d in devices.keys():
505 # skip devices that were already bound or that we know should be bound
506 if "Driver_str" in devices[d] or d in dev_list:
509 # update information about this device
510 devices[d] = dict(devices[d].items()
511 + get_pci_device_details(d, True).items())
513 # check if updated information indicates that the device was bound
514 if "Driver_str" in devices[d]:
518 def display_devices(title, dev_list, extra_params=None):
519 '''Displays to the user the details of a list of devices given in
520 "dev_list". The "extra_params" parameter, if given, should contain a string
521 with %()s fields in it for replacement by the named fields in each
522 device's dictionary.'''
523 strings = [] # this holds the strings to print. We sort before printing
524 print("\n%s" % title)
525 print("=" * len(title))
527 strings.append("<none>")
530 if extra_params is not None:
531 strings.append("%s '%s %s' %s" % (dev["Slot"],
536 strings.append("%s '%s'" % (dev["Slot"], dev["Device_str"]))
537 # sort before printing, so that the entries appear in PCI order
539 print("\n".join(strings)) # print one per line
542 def show_device_status(devices_type, device_name, if_field=False):
548 # split our list of network devices into the three categories above
549 for d in devices.keys():
550 if device_type_match(devices[d], devices_type):
551 if not has_driver(d):
552 no_drv.append(devices[d])
554 if devices[d]["Driver_str"] in dpdk_drivers:
555 dpdk_drv.append(devices[d])
557 kernel_drv.append(devices[d])
559 n_devs = len(dpdk_drv) + len(kernel_drv) + len(no_drv)
561 # don't bother displaying anything if there are no devices
563 msg = "No '%s' devices detected" % device_name
566 print("".join('=' * len(msg)))
569 # print each category separately, so we can clearly see what's used by DPDK
571 display_devices("%s devices using DPDK-compatible driver" % device_name,
572 dpdk_drv, "drv=%(Driver_str)s unused=%(Module_str)s")
576 if_text = "if=%(Interface)s "
577 display_devices("%s devices using kernel driver" % device_name, kernel_drv,
578 if_text + "drv=%(Driver_str)s "
579 "unused=%(Module_str)s %(Active)s")
581 display_devices("Other %s devices" % device_name, no_drv,
582 "unused=%(Module_str)s")
586 '''Function called when the script is passed the "--status" option.
587 Displays to the user what devices are bound to the igb_uio driver, the
588 kernel driver or to no driver'''
590 if status_dev in ["net", "all"]:
591 show_device_status(network_devices, "Network", if_field=True)
593 if status_dev in ["baseband", "all"]:
594 show_device_status(baseband_devices, "Baseband")
596 if status_dev in ["crypto", "all"]:
597 show_device_status(crypto_devices, "Crypto")
599 if status_dev in ["dma", "all"]:
600 show_device_status(dma_devices, "DMA")
602 if status_dev in ["event", "all"]:
603 show_device_status(eventdev_devices, "Eventdev")
605 if status_dev in ["mempool", "all"]:
606 show_device_status(mempool_devices, "Mempool")
608 if status_dev in ["compress", "all"]:
609 show_device_status(compress_devices, "Compress")
611 if status_dev in ["misc", "all"]:
612 show_device_status(misc_devices, "Misc (rawdev)")
614 if status_dev in ["regex", "all"]:
615 show_device_status(regex_devices, "Regex")
619 '''Returns a list containing either:
620 * List of PCI B:D:F matching arg, using shell wildcards e.g. 80:04.*
621 * Only the passed arg if matching list is empty'''
622 sysfs_path = "/sys/bus/pci/devices"
623 for _glob in [arg, '0000:' + arg]:
624 paths = [basename(path) for path in glob(path_join(sysfs_path, _glob))]
631 '''Parses the command-line arguments given by the user and takes the
632 appropriate action for each'''
639 parser = argparse.ArgumentParser(
640 description='Utility to bind and unbind devices from Linux kernel',
641 formatter_class=argparse.RawDescriptionHelpFormatter,
646 To display current device status:
649 To display current network device status:
650 %(prog)s --status-dev net
652 To bind eth1 from the current driver and move to use vfio-pci
653 %(prog)s --bind=vfio-pci eth1
655 To unbind 0000:01:00.0 from using any driver
656 %(prog)s -u 0000:01:00.0
658 To bind 0000:02:00.0 and 0000:02:00.1 to the ixgbe kernel driver
659 %(prog)s -b ixgbe 02:00.0 02:00.1
666 help="Print the current status of all known devices.")
669 help="Print the status of given device group.",
670 choices=['baseband', 'compress', 'crypto', 'dma', 'event',
671 'mempool', 'misc', 'net', 'regex'])
672 bind_group = parser.add_mutually_exclusive_group()
673 bind_group.add_argument(
677 help="Select the driver to use or \"none\" to unbind the device")
678 bind_group.add_argument(
682 help="Unbind a device (equivalent to \"-b none\")")
687 Override restriction on binding devices in use by Linux"
688 WARNING: This can lead to loss of network connection and should be used with caution.
695 Device specified as PCI "domain:bus:slot.func" syntax or "bus:slot.func" syntax.
696 For devices bound to Linux kernel drivers, they may be referred to by interface name.
699 opt = parser.parse_args()
703 status_dev = opt.status_dev
715 if not b_flag and not status_flag:
716 print("Error: No action specified for devices. "
717 "Please give a --bind, --ubind or --status option",
722 if b_flag and not args:
723 print("Error: No devices specified.", file=sys.stderr)
727 # resolve any PCI globs in the args
730 new_args.extend(pci_glob(arg))
734 def do_arg_actions():
735 '''do the actual action requested by the user'''
741 if b_flag in ["none", "None"]:
742 unbind_all(args, force_flag)
743 elif b_flag is not None:
744 bind_all(args, b_flag, force_flag)
746 if b_flag is not None:
748 # refresh if we have changed anything
749 get_device_details(network_devices)
750 get_device_details(baseband_devices)
751 get_device_details(crypto_devices)
752 get_device_details(dma_devices)
753 get_device_details(eventdev_devices)
754 get_device_details(mempool_devices)
755 get_device_details(compress_devices)
756 get_device_details(regex_devices)
757 get_device_details(misc_devices)
762 '''program main function'''
763 # check if lspci is installed, suppress any output
764 with open(os.devnull, 'w') as devnull:
765 ret = subprocess.call(['which', 'lspci'],
766 stdout=devnull, stderr=devnull)
768 sys.exit("'lspci' not found - please install 'pciutils'")
772 get_device_details(network_devices)
773 get_device_details(baseband_devices)
774 get_device_details(crypto_devices)
775 get_device_details(dma_devices)
776 get_device_details(eventdev_devices)
777 get_device_details(mempool_devices)
778 get_device_details(compress_devices)
779 get_device_details(regex_devices)
780 get_device_details(misc_devices)
784 if __name__ == "__main__":