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https://github.com/xen-project/xen.git
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Keir Fraser
35761fcc8b
'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@necst.nec.co.jp>
83 lines
3.2 KiB
Python
83 lines
3.2 KiB
Python
#!/usr/bin/env python
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# -*- mode: python; -*-
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#============================================================================
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of version 2.1 of the GNU Lesser General Public
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# License as published by the Free Software Foundation.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#============================================================================
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# Copyright (c) 2009, NEC Corporation.
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#============================================================================
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# This script converts SBDF into device path.
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# 'SBDF' format is "[SEG#:]BUS#:DEV#.FUNC#"
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# ex) 0000:0a:1f.3
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# Device path format is "HID[:UID]-DEV#.FUNC#[-DEV#.FUNC#[...]]"
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# ex) PNP0A08:0-2.0-0.0
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#=============================================================================
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import sys
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import os
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# add fallback path for non-native python path installs if needed
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sys.path.append('/usr/lib/python')
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sys.path.append('/usr/lib64/python')
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from xen.util.pci import *
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SYSFS_ACPI_DEVS_PATH = '/firmware/acpi/namespace/ACPI/_SB'
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def find_hid_uid(dom, b, d, f):
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obj_list = os.listdir(sb_path)
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for obj in obj_list:
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obj_path = sb_path + '/' + obj.strip() + '/'
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if os.path.exists(obj_path + 'seg') and \
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os.path.exists(obj_path + 'bbn'):
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seg = open(obj_path + 'seg').read()
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bbn = open(obj_path + 'bbn').read()
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if int(seg) == dom and int(bbn) == b:
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hid = open(obj_path + 'hid').read()
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if os.path.exists(obj_path + 'uid') is False:
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path_str = hid.strip()
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else:
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uid = open(obj_path + 'uid').read()
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path_str = hid.strip() + ':' + uid.strip()
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return path_str
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return None
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def make_device_path(dom, b, d, f):
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dev = PciDevice(dom, b, d, f)
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parent = dev.find_parent()
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if parent is None:
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path_str = find_hid_uid(dom, b, d, f)
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path_str = path_str + '-' + hex(d).replace('0x', '') + '.' + \
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hex(f).replace('0x', '')
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return path_str
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(pdom, pb, pd, pf) = parent
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path_str = make_device_path(pdom, pb, pd, pf)
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path_str = path_str + '-' + hex(d).replace('0x', '') + '.' + \
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hex(f).replace('0x', '')
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return path_str
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# main
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if len(sys.argv) <> 2:
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print 'Usage: sbdf2devicepath SBDF\n'
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else:
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sb_path = find_sysfs_mnt() + SYSFS_ACPI_DEVS_PATH
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if os.path.exists(sb_path):
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path = os.environ['PATH']
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os.environ['PATH'] = path + ':/sbin' + ':/user/sbin'
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sbdf = sys.argv[1]
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(dom, b, d, f) = parse_pci_name(sbdf)
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path_str = make_device_path(dom, b, d, f)
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print path_str
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else:
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print sb_path + ' not found.\n'
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print 'This command is only for linux 2.6.18.8 xen kernel.\n'
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