# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1239267556 -3600
# Node ID 0b9b6d5a61c1822452fbf370e1e2fa936adf2213
# Parent 90d5fb6946203c661ad06430d43f1cee7d734e9e
sbdf2devicepath: 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
The command can be executed as follows.
# sbdf2devicepath 0a:1f.3
PNP0A08:0-2.0-0.0
Signed-off-by: Yuji Shimada <shimada-yxb@xxxxxxxxxxxxxxx>
---
tools/misc/sbdf2devicepath | 82 +++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 82 insertions(+)
diff -r 90d5fb694620 -r 0b9b6d5a61c1 tools/misc/sbdf2devicepath
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/misc/sbdf2devicepath Thu Apr 09 09:59:16 2009 +0100
@@ -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'
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