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Diffstat (limited to 'tools/misc/sbdf2devicepath')
-rw-r--r-- | tools/misc/sbdf2devicepath | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/tools/misc/sbdf2devicepath b/tools/misc/sbdf2devicepath new file mode 100644 index 0000000000..690834adf5 --- /dev/null +++ b/tools/misc/sbdf2devicepath @@ -0,0 +1,82 @@ +#!/usr/bin/env python +# -*- mode: python; -*- +#============================================================================ +# This library is free software; you can redistribute it and/or +# modify it under the terms of version 2.1 of the GNU Lesser General Public +# License as published by the Free Software Foundation. +# +# This library is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public +# License along with this library; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +#============================================================================ +# Copyright (c) 2009, NEC Corporation. +#============================================================================ +# This script converts SBDF into device path. +# 'SBDF' format is "[SEG#:]BUS#:DEV#.FUNC#" +# ex) 0000:0a:1f.3 +# Device path format is "HID[:UID]-DEV#.FUNC#[-DEV#.FUNC#[...]]" +# ex) PNP0A08:0-2.0-0.0 +#============================================================================= + +import sys +import os + +# add fallback path for non-native python path installs if needed +sys.path.append('/usr/lib/python') +sys.path.append('/usr/lib64/python') +from xen.util.pci import * + +SYSFS_ACPI_DEVS_PATH = '/firmware/acpi/namespace/ACPI/_SB' + +def find_hid_uid(dom, b, d, f): + obj_list = os.listdir(sb_path) + for obj in obj_list: + obj_path = sb_path + '/' + obj.strip() + '/' + if os.path.exists(obj_path + 'seg') and \ + os.path.exists(obj_path + 'bbn'): + seg = open(obj_path + 'seg').read() + bbn = open(obj_path + 'bbn').read() + if int(seg) == dom and int(bbn) == b: + hid = open(obj_path + 'hid').read() + if os.path.exists(obj_path + 'uid') is False: + path_str = hid.strip() + else: + uid = open(obj_path + 'uid').read() + path_str = hid.strip() + ':' + uid.strip() + return path_str + return None + +def make_device_path(dom, b, d, f): + dev = PciDevice(dom, b, d, f) + parent = dev.find_parent() + if parent is None: + path_str = find_hid_uid(dom, b, d, f) + path_str = path_str + '-' + hex(d).replace('0x', '') + '.' + \ + hex(f).replace('0x', '') + return path_str + (pdom, pb, pd, pf) = parent + path_str = make_device_path(pdom, pb, pd, pf) + path_str = path_str + '-' + hex(d).replace('0x', '') + '.' + \ + hex(f).replace('0x', '') + return path_str + +# main +if len(sys.argv) <> 2: + print 'Usage: sbdf2devicepath SBDF\n' +else: + sb_path = find_sysfs_mnt() + SYSFS_ACPI_DEVS_PATH + if os.path.exists(sb_path): + path = os.environ['PATH'] + os.environ['PATH'] = path + ':/sbin' + ':/user/sbin' + sbdf = sys.argv[1] + (dom, b, d, f) = parse_pci_name(sbdf) + path_str = make_device_path(dom, b, d, f) + print path_str + else: + print sb_path + ' not found.\n' + print 'This command is only for linux 2.6.18.8 xen kernel.\n' |