tools/hv/lsvmbus

   1 #!/usr/bin/env python
   2 # SPDX-License-Identifier: GPL-2.0
   3
   4 import os
   5 from optparse import OptionParser
   6
   7 help_msg = "print verbose messages. Try -vv, -vvv for  more verbose messages"
   8 parser = OptionParser()
   9 parser.add_option(
  10         "-v", "--verbose", dest="verbose", help=help_msg, action="count")
  11
  12 (options, args) = parser.parse_args()
  13
  14 verbose = 0
  15 if options.verbose is not None:
  16         verbose = options.verbose
  17
  18 vmbus_sys_path = '/sys/bus/vmbus/devices'
  19 if not os.path.isdir(vmbus_sys_path):
  20         print("%s doesn't exist: exiting..." % vmbus_sys_path)
  21         exit(-1)
  22
  23 vmbus_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
  46 def 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
  57 class VMBus_Dev:
  58         pass
  59
  60
  61 vmbus_dev_list = []
  62
  63 for 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
  91 vmbus_dev_list = sorted(vmbus_dev_list, key=lambda d: int(d.vmbus_id))
  92
  93 format0 = '%2s: %s'
  94 format1 = '%2s: Class_ID = %s - %s\n%s'
  95 format2 = '%2s: Class_ID = %s - %s\n\tDevice_ID = %s\n\tSysfs path: %s\n%s'
  96
  97 for 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                 )