1#!/usr/bin/env python3
  2# SPDX-License-Identifier: GPL-2.0
  3
  4import os
  5from optparse import OptionParser
  6
  7help_msg = "print verbose messages. Try -vv, -vvv for  more verbose messages"
  8parser = OptionParser()
  9parser.add_option(
 10	"-v", "--verbose", dest="verbose", help=help_msg, action="count")
 11
 12(options, args) = parser.parse_args()
 13
 14verbose = 0
 15if options.verbose is not None:
 16	verbose = options.verbose
 17
 18vmbus_sys_path = '/sys/bus/vmbus/devices'
 19if not os.path.isdir(vmbus_sys_path):
 20	print("%s doesn't exist: exiting..." % vmbus_sys_path)
 21	exit(-1)
 22
 23vmbus_dev_dict = {
 24	'{0e0b6031-5213-4934-818b-38d90ced39db}': '[Operating system shutdown]',
 25	'{9527e630-d0ae-497b-adce-e80ab0175caf}': '[Time Synchronization]',
 26	'{57164f39-9115-4e78-ab55-382f3bd5422d}': '[Heartbeat]',
 27	'{a9a0f4e7-5a45-4d96-b827-8a841e8c03e6}': '[Data Exchange]',
 28	'{35fa2e29-ea23-4236-96ae-3a6ebacba440}': '[Backup (volume checkpoint)]',
 29	'{34d14be3-dee4-41c8-9ae7-6b174977c192}': '[Guest services]',
 30	'{525074dc-8985-46e2-8057-a307dc18a502}': '[Dynamic Memory]',
 31	'{cfa8b69e-5b4a-4cc0-b98b-8ba1a1f3f95a}': 'Synthetic mouse',
 32	'{f912ad6d-2b17-48ea-bd65-f927a61c7684}': 'Synthetic keyboard',
 33	'{da0a7802-e377-4aac-8e77-0558eb1073f8}': 'Synthetic framebuffer adapter',
 34	'{f8615163-df3e-46c5-913f-f2d2f965ed0e}': 'Synthetic network adapter',
 35	'{32412632-86cb-44a2-9b5c-50d1417354f5}': 'Synthetic IDE Controller',
 36	'{ba6163d9-04a1-4d29-b605-72e2ffb1dc7f}': 'Synthetic SCSI Controller',
 37	'{2f9bcc4a-0069-4af3-b76b-6fd0be528cda}': 'Synthetic fiber channel adapter',
 38	'{8c2eaf3d-32a7-4b09-ab99-bd1f1c86b501}': 'Synthetic RDMA adapter',
 39	'{44c4f61d-4444-4400-9d52-802e27ede19f}': 'PCI Express pass-through',
 40	'{276aacf4-ac15-426c-98dd-7521ad3f01fe}': '[Reserved system device]',
 41	'{f8e65716-3cb3-4a06-9a60-1889c5cccab5}': '[Reserved system device]',
 42	'{3375baf4-9e15-4b30-b765-67acb10d607b}': '[Reserved system device]',
 43}
 44
 45
 46def get_vmbus_dev_attr(dev_name, attr):
 47	try:
 48		f = open('%s/%s/%s' % (vmbus_sys_path, dev_name, attr), 'r')
 49		lines = f.readlines()
 50		f.close()
 51	except IOError:
 52		lines = []
 53
 54	return lines
 55
 56
 57class VMBus_Dev:
 58	pass
 59
 60
 61vmbus_dev_list = []
 62
 63for f in os.listdir(vmbus_sys_path):
 64	vmbus_id = get_vmbus_dev_attr(f, 'id')[0].strip()
 65	class_id = get_vmbus_dev_attr(f, 'class_id')[0].strip()
 66	device_id = get_vmbus_dev_attr(f, 'device_id')[0].strip()
 67	dev_desc = vmbus_dev_dict.get(class_id, 'Unknown')
 68
 69	chn_vp_mapping = get_vmbus_dev_attr(f, 'channel_vp_mapping')
 70	chn_vp_mapping = [c.strip() for c in chn_vp_mapping]
 71	chn_vp_mapping = sorted(
 72		chn_vp_mapping, key=lambda c: int(c.split(':')[0]))
 73
 74	chn_vp_mapping = [
 75		'\tRel_ID=%s, target_cpu=%s' %
 76		(c.split(':')[0], c.split(':')[1]) for c in chn_vp_mapping
 77	]
 78	d = VMBus_Dev()
 79	d.sysfs_path = '%s/%s' % (vmbus_sys_path, f)
 80	d.vmbus_id = vmbus_id
 81	d.class_id = class_id
 82	d.device_id = device_id
 83	d.dev_desc = dev_desc
 84	d.chn_vp_mapping = '\n'.join(chn_vp_mapping)
 85	if d.chn_vp_mapping:
 86		d.chn_vp_mapping += '\n'
 87
 88	vmbus_dev_list.append(d)
 89
 90
 91vmbus_dev_list = sorted(vmbus_dev_list, key=lambda d: int(d.vmbus_id))
 92
 93format0 = '%2s: %s'
 94format1 = '%2s: Class_ID = %s - %s\n%s'
 95format2 = '%2s: Class_ID = %s - %s\n\tDevice_ID = %s\n\tSysfs path: %s\n%s'
 96
 97for d in vmbus_dev_list:
 98	if verbose == 0:
 99		print(('VMBUS ID ' + format0) % (d.vmbus_id, d.dev_desc))
100	elif verbose == 1:
101		print(
102			('VMBUS ID ' + format1) %
103			(d.vmbus_id, d.class_id, d.dev_desc, d.chn_vp_mapping)
104		)
105	else:
106		print(
107			('VMBUS ID ' + format2) %
108			(
109				d.vmbus_id, d.class_id, d.dev_desc,
110				d.device_id, d.sysfs_path, d.chn_vp_mapping
111			)
112		)