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$NetBSD: patch-dm,v 1.1 2009/03/05 19:43:32 bouyer Exp $
--- python/xen/util/pci.py.orig 2008-04-25 13:03:12.000000000 +0000
+++ python/xen/util/pci.py 2009-03-05 15:48:44.000000000 +0000
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/pkg/bin/python2.4
#
# PCI Device Information Class
# - Helps obtain information about which I/O resources a PCI device needs
@@ -6,52 +6,8 @@
# Author: Ryan Wilson <hap9@epoch.ncsc.mil>
import sys
-import os, os.path
-PROC_MNT_PATH = '/proc/mounts'
-PROC_PCI_PATH = '/proc/bus/pci/devices'
-PROC_PCI_NUM_RESOURCES = 7
-
-SYSFS_PCI_DEVS_PATH = '/bus/pci/devices'
-SYSFS_PCI_DEV_RESOURCE_PATH = '/resource'
-SYSFS_PCI_DEV_IRQ_PATH = '/irq'
-SYSFS_PCI_DEV_DRIVER_DIR_PATH = '/driver'
-SYSFS_PCI_DEV_VENDOR_PATH = '/vendor'
-SYSFS_PCI_DEV_DEVICE_PATH = '/device'
-SYSFS_PCI_DEV_SUBVENDOR_PATH = '/subsystem_vendor'
-SYSFS_PCI_DEV_SUBDEVICE_PATH = '/subsystem_device'
-
-PCI_BAR_IO = 0x01
-PCI_BAR_IO_MASK = ~0x03
-PCI_BAR_MEM_MASK = ~0x0f
-
-# Definitions from Linux: include/linux/pci.h
-def PCI_DEVFN(slot, func):
- return ((((slot) & 0x1f) << 3) | ((func) & 0x07))
-
-def find_sysfs_mnt():
- mounts_file = open(PROC_MNT_PATH,'r')
-
- for line in mounts_file:
- sline = line.split()
- if len(sline)<3:
- continue
-
- if sline[2]=='sysfs':
- return sline[1]
-
- return None
-
-class PciDeviceNotFoundError(Exception):
- def __init__(self,domain,bus,slot,func):
- self.domain = domain
- self.bus = bus
- self.slot = slot
- self.func = func
- self.name = "%04x:%02x:%02x.%01x"%(domain, bus, slot, func)
-
- def __str__(self):
- return ('PCI Device %s Not Found' % (self.name))
+KERN_PATH = '/kern/xen/pci/'
class PciDeviceParseError(Exception):
def __init__(self,msg):
@@ -69,94 +25,45 @@
self.irq = 0
self.iomem = []
self.ioports = []
- self.driver = None
+ self.driver = 'pciback'
self.vendor = None
self.device = None
self.subvendor = None
self.subdevice = None
- self.get_info_from_sysfs()
+ self.get_info_from_kern()
- def get_info_from_sysfs(self):
- try:
- sysfs_mnt = find_sysfs_mnt()
- except IOError, (errno, strerr):
- raise PciDeviceParseError(('Failed to locate sysfs mount: %s (%d)' %
- (PROC_PCI_PATH, strerr, errno)))
+ def get_info_from_kern(self):
- if sysfs_mnt == None:
- return False
-
- path = sysfs_mnt+SYSFS_PCI_DEVS_PATH+'/'+ \
- self.name+SYSFS_PCI_DEV_RESOURCE_PATH
+ path = KERN_PATH + self.name
+
try:
resource_file = open(path,'r')
- for i in range(PROC_PCI_NUM_RESOURCES):
- line = resource_file.readline()
- sline = line.split()
- if len(sline)<3:
- continue
-
- start = int(sline[0],16)
- end = int(sline[1],16)
- flags = int(sline[2],16)
- size = end-start+1
-
- if start!=0:
- if flags&PCI_BAR_IO:
- self.ioports.append( (start,size) )
+ for line in resource_file.readlines():
+ k, v = line.strip().split(':')
+ if k == 'vendor':
+ self.vendor = int(v.strip(), 16)
+ elif k == 'product':
+ self.device = int(v.strip(), 16)
+ elif k == 'subsys_vendor':
+ self.subvendor = int(v.strip(), 16)
+ elif k == 'subsys_product':
+ self.subdevice = int(v.strip(), 16)
+ elif k in ('I/O', 'mem'):
+ sline = map(str.strip, v.split('-'))
+
+ start = int(sline[0], 16)
+ end = int(sline[1], 16)
+ size = end - start + 1
+
+ if k == 'I/O':
+ self.ioports.append((start, size))
else:
- self.iomem.append( (start,size) )
-
- except IOError, (errno, strerr):
- raise PciDeviceParseError(('Failed to open & read %s: %s (%d)' %
- (path, strerr, errno)))
-
- path = sysfs_mnt+SYSFS_PCI_DEVS_PATH+'/'+ \
- self.name+SYSFS_PCI_DEV_IRQ_PATH
- try:
- self.irq = int(open(path,'r').readline())
- except IOError, (errno, strerr):
- raise PciDeviceParseError(('Failed to open & read %s: %s (%d)' %
- (path, strerr, errno)))
+ self.iomem.append((start, size))
+ elif k == 'irq':
+ self.irq = int(v.strip())
- path = sysfs_mnt+SYSFS_PCI_DEVS_PATH+'/'+ \
- self.name+SYSFS_PCI_DEV_DRIVER_DIR_PATH
- try:
- self.driver = os.path.basename(os.readlink(path))
- except IOError, (errno, strerr):
- raise PciDeviceParseError(('Failed to read %s: %s (%d)' %
- (path, strerr, errno)))
-
- path = sysfs_mnt+SYSFS_PCI_DEVS_PATH+'/'+ \
- self.name+SYSFS_PCI_DEV_VENDOR_PATH
- try:
- self.vendor = int(open(path,'r').readline(), 16)
- except IOError, (errno, strerr):
- raise PciDeviceParseError(('Failed to open & read %s: %s (%d)' %
- (path, strerr, errno)))
-
- path = sysfs_mnt+SYSFS_PCI_DEVS_PATH+'/'+ \
- self.name+SYSFS_PCI_DEV_DEVICE_PATH
- try:
- self.device = int(open(path,'r').readline(), 16)
- except IOError, (errno, strerr):
- raise PciDeviceParseError(('Failed to open & read %s: %s (%d)' %
- (path, strerr, errno)))
-
- path = sysfs_mnt+SYSFS_PCI_DEVS_PATH+'/'+ \
- self.name+SYSFS_PCI_DEV_SUBVENDOR_PATH
- try:
- self.subvendor = int(open(path,'r').readline(), 16)
- except IOError, (errno, strerr):
- raise PciDeviceParseError(('Failed to open & read %s: %s (%d)' %
- (path, strerr, errno)))
-
- path = sysfs_mnt+SYSFS_PCI_DEVS_PATH+'/'+ \
- self.name+SYSFS_PCI_DEV_SUBDEVICE_PATH
- try:
- self.subdevice = int(open(path,'r').readline(), 16)
except IOError, (errno, strerr):
raise PciDeviceParseError(('Failed to open & read %s: %s (%d)' %
(path, strerr, errno)))
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