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Date: Tue, 19 Dec 2006 14:56:27 +0100
From: Diego Calleja <diegocg@gmail.com>
To: Marek Wawrzyczny <marekw1977@yahoo.com.au>
Cc: linux-kernel@vger.kernel.org
Subject: Re: GPL only modules [was Re: [GIT PATCH] more Driver core patches
 for 2.6.19]
Message-Id: <20061219145627.fabf3d98.diegocg@gmail.com>
In-Reply-To: <200612192357.45443.marekw1977@yahoo.com.au>
References: <MDEHLPKNGKAHNMBLJOLKCEAPAGAC.davids@webmaster.com>
	<Pine.LNX.4.62.0612171109180.27120@pademelon.sonytel.be>
	<200612192357.45443.marekw1977@yahoo.com.au>
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El Tue, 19 Dec 2006 23:57:45 +1100, Marek Wawrzyczny <marekw1977@yahoo.com.=
au> escribi=F3:

> I had another, probably crazy idea. Would it be possible to utilize the=20
> current vendor/device PCI ID database to create Linux friendliness matrix=
=20
> site?

I've a script (attached) that looks into /lib/modules/`uname -r`/modules.pc=
imap,
looks up the IDs in the pci id database and print the real name. At least i=
t shows=20
it's possible to know what devices are supported ...


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#!/usr/bin/python

def pciids_to_names(ids):
	# Only the last four numbers of the ids have useful info
	vendorid = ids[1][6:10]
	deviceid = ids[2][6:10]
	subvendorid = ids[3][6:10]
	subdeviceid = ids[4][6:10]

	result = [ids[0], "", "", "", "", ""]
	pciids = open('/usr/share/misc/pci.ids', 'r')

	# Search for vendor
	for line in pciids:
		if line[0] == "#" or line[0] == "C" or line[0] == "\t":
			continue
		if line[0:4] == vendorid:
			result[1] = line[6:].strip() # Vendor name
			break

	if result[1] == "": # Vendor not found
		return result

	# Search for a device
	for line in pciids:
		if line[0] != "\t":
			continue
		if line[1:5] == deviceid:
			result[2] = line[7:].strip() # Device name
			break

	# Search a subsystem name
	for line in pciids:
		if line[2:11] == subvendorid + " " + subdeviceid: # subsystem name
			result[3] = line[12:].strip() # The subvendor and subdevice ids point to a _single_ subsystem name
			break

	# Search a class name
	if ids[5][4:6] == "00" and ids[5][6:8] == "00" and ids[5][6:8] == "00":
		pass # void class ids
	else:
		pciids.seek(0)
		# Search a class name
		for line in pciids:
			if line[0] == "C":
				if line[2:4] ==  ids[5][4:6]: # found class
					result[4] = line[6:].strip() # appended class name
					break

		if result[4] == "": # class not found
			return result

		# Search subclass name
		for line in pciids:
			if line [1:3] == ids[5][6:8]:
				result[5] = line[5:].strip()
				break
	return result


### Start of the code flow ###
import platform
pcimap = open('/lib/modules/' + platform.uname()[2] + '/modules.pcimap', 'r')
previousmodule = "" 
for line in pcimap:
	if line[0] == "#" or line[0] == " ": continue
	data = line.split(None)
	ret = pciids_to_names(data)

	if ret[0] != previousmodule: 
		previousmodule = ret[0]
		print "Driver: " + previousmodule

	if ret[2] == "":
		output = "\tDevice NOT found in the pciid database: " + repr(data)
	else:
		output = "\tDevice: " + ret[2] + " (deviceid " + data[2][6:] + "); made by " + ret[1] + " (vendorid " + data[1][6:] + ")"
		if ret[3] != "": output += "; Subsystem: " + ret[3] + " (subsysid " + data[3][6:] + ":" + data[4][6:] + ")"
		if ret[4] != "": output += "; Class: " + ret[4]
		if ret[5] != "": output += "; Subclass: " + ret[5] 

	print output

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