"""
The point of this small utility is to take a file in the format
-of /lib/modules/`uname -r`/modules.pcimap and output a condensed, more
-easily used format for module detection
+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.
-Excepted format of file includes lines of:
+
+
+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
+
+If no pci ids are found for a particular module:
+
+sd_mod none:none
"""
import os, sys
def usage():
- print( "Usage:" )
- print( "rewrite-pcitable.py <pcitable> [<output>]" )
+ print( "\nUsage:" )
+ print( "rewrite-pcitable.py <modules.dep> <modules.pcimap> " \
+ "<pcitable> [<output>]" )
print( "" )
-if len(sys.argv) < 2:
+if len(sys.argv) < 4:
usage()
sys.exit(1)
-pcitable_file_name= sys.argv[1]
+# open modules.dep (for list of built modules)
+modulesdep_file_name= sys.argv[1]
try:
- pcitable_file= file(pcitable_file_name,"r")
+ modulesdep_file= file(modulesdep_file_name,"r")
+except IOError:
+ sys.stderr.write( "Unable to open modules.dep: %s\n" % modulesdep_file_name )
+ usage()
+ sys.exit(1)
+
+# open modules.pcimap
+pcimap_file_name= sys.argv[2]
+try:
+ pcimap_file= file(pcimap_file_name,"r")
except IOError:
- sys.stderr.write( "Unable to open: %s\n" % pcitable_file_name )
+ sys.stderr.write( "Unable to open modules.pcimap: %s\n" % pcimap_file_name )
+ usage()
sys.exit(1)
-if len(sys.argv) > 2:
- output_file_name= sys.argv[2]
+# open pcitable
+pcitable_file_name= sys.argv[3]
+try:
+ pcitable_file= file(pcitable_file_name,"r")
+except IOError:
+ sys.stderr.write( "Unable to open pcitable: %s\n" % pcitable_file_name )
+ usage()
+ sys.exit(1)
+
+# finally, if we are supposed to output to a file, open that too
+if len(sys.argv) > 4:
+ output_file_name= sys.argv[4]
try:
output_file= file(output_file_name,"w")
except IOError:
output_file= sys.stdout
-line_num= 0
-
# associative array to store all matches of module -> ['vendor:device',..]
# entries
all_modules= {}
-for line in pcitable_file:
+
+# first step, create an associative array of all the built modules
+for line in modulesdep_file_name:
+ parts= string.split(line,":")
+ if len(parts) < 2:
+ continue
+
+ full_mod_path= parts[0]
+ parts= string.split(full_mod_path,"/")
+ module_name= parts[len(parts)-1]
+ module_name_len= len(module_name)
+ if module_name[module_name_len-3:] == ".ko":
+ all_modules[module_name[:3]]= []
+
+
+# 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_parts= string.split(line)
if line_parts is None or len(line_parts) != 8:
- sys.stderr.write( "Skipping line %d (incorrect format)\n" % line_num )
+ sys.stderr.write( "Skipping line %d in pcimap (incorrect format)\n" %
+ line_num )
continue
# first two parts are always vendor / device id
# valid vendor and devices are 10 chars (0xXXXXXXXX) and begin with 0x
if len(vendor_id) != 10 or len(device_id) != 10:
- sys.stderr.write( "Skipping line %d (invalid vendor/device id length)\n"
- % line_num )
+ sys.stderr.write( "Skipping line %d in pcimap (invalid vendor/device " \
+ "id length)\n" % line_num )
continue
if string.lower(vendor_id[:2]) != "0x" \
or string.lower(device_id[:2]) != "0x":
- sys.stderr.write( "Skipping line %d (invalid vendor/device id format)\n"
- % line_num )
+ sys.stderr.write( "Skipping line %d in pcimap (invalid vendor/device " \
+ "id format)\n" % line_num )
continue
# cut down the ids, only need last 4 bytes
full_id= "%s:%s" % (vendor_id, device_id)
if all_modules.has_key(module):
- all_modules[module].append( full_id )
+ if full_id not in all_modules[module]:
+ all_modules[module].append( full_id )
else:
+ # normally shouldn't get here, as the list is prepopulated with all
+ # the built modules
all_modules[module]= [full_id,]
+
+# parse pcitable, add any more ids for the devices
+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) < 4:
+ sys.stderr.write( "Skipping line %d in pcitable (incorrect format)\n" %
+ line_num )
+ continue
+
+ # vendor id is always the first field, device the second. also,
+ # strip off first two chars (the 0x)
+ vendor_id= string.lower(line_parts[0][2:])
+ device_id= string.lower(line_parts[1][2:])
+
+ full_id= "%s:%s" % (vendor_id, device_id)
+
+ # 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]
+ elif line_parts[2][0] == '0':
+ module= line_parts[4]
+ else:
+ sys.stderr.write( "Skipping line %d in pcitable (incorrect format)\n" %
+ line_num )
+ continue
+
+ # remove the first and last char of module (quote marks)
+ module= module[1:]
+ module= module[:len(module)-1]
+
+ # now add it if we don't already have this module -> id mapping
+ if all_modules.has_key(module):
+ if full_id not in all_modules[module]:
+ all_modules[module].append( full_id )
+ else:
+ # don't add any modules from pcitable that we don't already know about
+ pass
+
+
for module in all_modules.keys():
- devices= string.join( all_modules[module], " " )
- output_file.write( "%s %s\n" % (module,devices) )
+ devices= all_modules[module]
+ if len(devices) > 0:
+ devices_str= string.join( all_modules[module], " " )
+ output_file.write( "%s %s\n" % (module,devices_str) )
output_file.close()
pcitable_file.close()
+pcimap_file.close()
+modulesdep_file.close()
+
git://git.onelab.eu / bootcd.git / commitdiff