--- /dev/null
+#!/usr/bin/python2
+
+# Copyright (c) 2003 Intel Corporation
+# All rights reserved.
+#
+# Copyright (c) 2004-2006 The Trustees of Princeton University
+# All rights reserved.
+
+
+"""
+The point of this small utility is to take a file in the format
+of /lib/modules/`uname -r`/modules.pcimap and /usr/share/hwdata/pcitable
+and output a condensed, more easily used format for module detection. This is
+done by first getting a list of all the built modules, then loading the
+pci ids for each of those modules from modules.pcimap, then finally merging
+in the contents of pcitable (for built modules only). The result should be
+a file with a pretty comprehensive mapping of pci ids to module names.
+
+The output is used by the PlanetLab boot cd (3.0+) and the pl_hwinit script
+to load all the applicable modules by scanning lspci output.
+
+
+
+Expected format of file modules.dep includes lines of:
+
+/full/module/path/mod.ko: <dependencies>
+
+Expected format of file modules.pcimap includes lines of:
+
+# pci_module vendor device subvendor subdevice class class_mask driver_data
+cciss 0x00000e11 0x0000b060 0x00000e11 0x00004070 0x00000000 0x00000000 0x0
+cciss 0x00000e11 0x0000b178 0x00000e11 0x00004070 0x00000000 0x00000000 0x0
+
+Expected format of file pcitable includes lines of:
+
+# ("%d\t%d\t%s\t"%s"\n", vendid, devid, moduleName, cardDescription)
+# or ("%d\t%d\t%d\t%d\t%s\t"%s"\n", vendid, devid, subvendid, subdevid, moduleNa
+# me, cardDescription)
+0x0e11 0x0508 "tmspci" "Compaq|Netelligent 4/16 Token Ring"
+0x1000 0x0407 0x8086 0x0532 "megaraid" "Storage RAID Controller SRCU42X"
+
+Lines listing a module name of ignore or unknown from pcitable are skipped
+
+
+
+Output format, for each line that matches the above lines:
+cciss 0e11:b060 0e11:b178
+
+"""
+
+import os, sys
+import string
+import StringIO
+
+PCI_ANY = 0xffffffffL
+
+def merge_files(modules_dep_path, modules_pcimap_path, pcitable_path):
+ """
+ merge the three files as described above, and return a dictionary.
+ keys are module names, value is a list of pci ids for that module,
+ in the form "0e11:b178"
+ """
+
+ try:
+ modulesdep_file= file(modules_dep_path,"r")
+ except IOError:
+ sys.stderr.write( "Unable to open modules.dep: %s\n" %
+ modules_dep_path )
+ return
+
+ try:
+ pcimap_file= file(modules_pcimap_path,"r")
+ except IOError:
+ sys.stderr.write( "Unable to open modules.pcimap: %s\n" %
+ modules_pcimap_path )
+ return
+
+ try:
+ pcitable_file= file(pcitable_path,"r")
+ except IOError:
+ sys.stderr.write( "Unable to open pcitable: %s\n" %
+ pcitable_path )
+ pcitable_file=StringIO.StringIO()
+
+ # associative array to store all matches of module -> ['vendor:device',..]
+ # entries
+ all_modules= {}
+ all_pci_ids= {}
+
+ # first step, create an associative array of all the built modules
+ for line in modulesdep_file:
+ parts= string.split(line,":")
+ if len(parts) < 2:
+ continue
+
+ full_mod_path= parts[0]
+ parts= string.split(full_mod_path,"/")
+ module= parts[len(parts)-1]
+ module_len= len(module)
+ if module[module_len-3:] == ".ko":
+ module= module[:-3]
+ all_modules[module]= []
+
+ modulesdep_file.close()
+
+ # now, parse the pcimap and add devices
+ line_num= 0
+ for line in pcimap_file:
+ line_num= line_num+1
+
+ # skip blank lines, or lines that begin with # (comments)
+ line= string.strip(line)
+ if len(line) == 0:
+ continue
+
+ if line[0] == "#":
+ continue
+
+ line_parts= string.split(line)
+ if line_parts is None or len(line_parts) != 8:
+ sys.stderr.write( "Skipping line %d in pcimap " \
+ "(incorrect format %s)\n" % (line_num,line) )
+ continue
+
+ # first two parts are always vendor / device id
+ module= line_parts[0]
+
+ # XXX In kernel versions <2.6.14, mptscsih is the actual
+ # module that should be loaded instead of mptbase.
+ if module == "mptbase":
+ module= "mptscsih"
+
+ try:
+ vendor_id= long(line_parts[1],16)
+ except ValueError, e:
+ sys.stderr.write( "Skipping line %d in %s " \
+ "(incorrect vendor id format %s)\n" % (line_num,modules_pcimap_path,line_parts[1]))
+ continue
+
+ try:
+ device_id= long(line_parts[2],16)
+ except ValueError, e:
+ sys.stderr.write( "Skipping line %d in %s " \
+ "(incorrect device id format %s)\n" % (line_num,modules_pcimap_path,line_parts[2]))
+ continue
+
+ try:
+ subvendor_id= long(line_parts[3],16)
+ except ValueError, e:
+ sys.stderr.write( "Skipping line %d in %s " \
+ "(incorrect subvendor id format %s)\n" % (line_num,modules_pcimap_path,line_parts[3]))
+ continue
+
+ try:
+ subdevice_id= long(line_parts[4],16)
+ except ValueError, e:
+ sys.stderr.write( "Skipping line %d in %s " \
+ "(incorrect subdevice id format %s)\n" % (line_num,modules_pcimap_path,line_parts[4]))
+ continue
+
+ full_id= (vendor_id, device_id, subvendor_id, subdevice_id)
+ if not all_modules.has_key(module):
+ # normally shouldn't get here, as the list is
+ # prepopulated with all the built modules
+
+ # XXX we probably shouldn't be doing this at all
+ all_modules[module] = [full_id]
+ else:
+ all_modules[module].append(full_id)
+
+ if all_pci_ids.has_key(full_id):
+ # conflict as there are multiple modules that support
+ # particular pci device
+ all_pci_ids[full_id].append(module)
+ else:
+ all_pci_ids[full_id]= [module]
+
+ pcimap_file.close()
+
+ # parse pcitable, add any more ids for the devices
+ # We make the (potentially risky) assumption that pcitable contains
+ # only unique (vendor,device,subvendor,subdevice) entries.
+ line_num= 0
+ for line in pcitable_file:
+ line_num= line_num+1
+
+ # skip blank lines, or lines that begin with # (comments)
+ line= string.strip(line)
+ if len(line) == 0:
+ continue
+
+ if line[0] == "#":
+ continue
+
+ line_parts= string.split(line)
+ if line_parts is None or len(line_parts) <= 2:
+ sys.stderr.write( "Skipping line %d in pcitable " \
+ "(incorrect format 1)\n" % line_num )
+ continue
+
+ # vendor id is always the first field, device the second. also,
+ # strip off first two chars (the 0x)
+ try:
+ vendor_id= long(line_parts[0],16)
+ except ValueError, e:
+ sys.stderr.write( "Skipping vendor_id %s in %s on line %d\n" \
+ % (line_parts[0],pcitable_path,line_num))
+ continue
+
+ try:
+ device_id= long(line_parts[1],16)
+ except ValueError, e:
+ sys.stderr.write( "Skipping device %s in %s on line %d\n" \
+ % (line_parts[1],pcitable_path,line_num))
+ continue
+
+ # if the first char of the third field is a double
+ # quote, the third field is a module, else if the first
+ # char of the third field is a 0 (zero), the fifth field is
+ # the module name. it would nice if there was any easy way
+ # to split a string on spaces, but recognize quoted strings,
+ # so they wouldn't be split up. that is the reason for this wierd check
+ if line_parts[2][0] == '"':
+ module= line_parts[2]
+
+ subvendor_id=PCI_ANY
+ subdevice_id=PCI_ANY
+ elif line_parts[2][0] == '0':
+ try:
+ module= line_parts[4]
+ except ValueError, e:
+ sys.stderr.write( "Skipping line %d in pcitable " \
+ "(incorrect format 2)\n" % line_num )
+ continue
+ try:
+ subvendor_id= long(line_parts[2],16)
+ except ValueError, e:
+ sys.stderr.write( "Skipping line %d in pcitable " \
+ "(incorrect format 2a)\n" % line_num )
+ continue
+
+ try:
+ subdevice_id= long(line_parts[3],16)
+ except ValueError, e:
+ sys.stderr.write( "Skipping line %d in pcitable " \
+ "(incorrect format 2b)\n" % line_num )
+
+ else:
+ sys.stderr.write( "Skipping line %d in pcitable " \
+ "(incorrect format 3)\n" % line_num )
+ continue
+
+ # remove the first and last char of module (quote marks)
+ module= module[1:]
+ module= module[:len(module)-1]
+
+ full_id= (vendor_id, device_id, subvendor_id, subdevice_id)
+
+ if not all_modules.has_key(module):
+ # Do not process any modules listed in pcitable for which
+ # we do not have a prebuilt module.
+ continue
+
+ if not full_id in all_modules[module]:
+ all_modules[module].append(full_id)
+
+ if all_pci_ids.has_key(full_id):
+ if not module in all_pci_ids[full_id]:
+ all_pci_ids[full_id].append(module)
+
+ # check if there are duplicate mappings between modules
+ # and full_ids
+ if len(all_pci_ids[full_id])>1:
+ # collect the set of modules that are different than what
+ # is listed in the pcitables file
+ other_modules = []
+ for other_module in all_pci_ids[full_id]:
+ if other_module != module:
+ other_modules.append(other_module)
+
+ # remove full_id from the set of other modules in all_modules {}
+ for other_module in other_modules:
+ all_modules[other_module].remove(full_id)
+
+ # ensure that there is only one full_id -> module
+ all_pci_ids[full_id] = [module]
+
+ else:
+ all_pci_ids[full_id] = [module]
+
+ pcitable_file.close()
+
+ return (all_pci_ids,all_modules)
+
+if __name__ == "__main__":
+ def usage():
+ print( "\nUsage:" )
+ print( "%s <modules.dep> <modules.pcimap> " \
+ "<pcitable> [<output>]" % sys.argv[0] )
+ print( "" )
+
+ if len(sys.argv) < 4:
+ usage()
+ sys.exit(1)
+
+
+ if len(sys.argv) > 4:
+ output_file_name= sys.argv[4]
+ try:
+ output_file= file(output_file_name,"w")
+ except IOError:
+ sys.stderr.write( "Unable to open %s for writing.\n" % output_file )
+ sys.exit(1)
+ else:
+ output_file= sys.stdout
+
+
+ (all_pci_ids,all_modules)=merge_files( sys.argv[1],
+ sys.argv[2],
+ sys.argv[3] )
+ if all_modules is not None:
+ for module in all_modules.keys():
+ pci_ids = all_modules[module]
+ if len(pci_ids)>0:
+ output_file.write("%s" % module)
+ for pci_id in pci_ids:
+ output_file.write(" %x:%x:%x:%x" % pci_id)
+ output_file.write(" \n")
+ else:
+ sys.stderr.write( "Unable to list modules.\n" )
+
+ output_file.close()
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