device driver info

[Brad Hards]

On Wed, 19 Jun 2002 08:29, Simon Burton wrote:
> Hello good CLUGers,
Only evil CLUGers at this time of the day...

> How do i find what driver is connected
> to what device file?
> something in /proc?
Do you mean "given the major and minor numbers", tell me what driver uses this 
on this kernel?"
You can't (AFAIK) do this in general. There are a few entries available in 
different files:
[bradh at localhost bradh]$ cat /proc/bus/usb/drivers
         usbdevfs
         hub
 96-111: hiddev
         hid
         usb-storage
         catc
[bradh at localhost bradh]$ cat /proc/misc
175 agpgart
  1 psaux
134 apm_bios


You may have some joy with Documentation/devices.txt in your kernel tarball 
too.

> How to find what parameters a driver
> accepts ("dma=1" "joystick=0x200" etc.) ?
modinfo is probably what you are looking for. Here is a (purely random) 
example:

[bradh at localhost bradh]$ /sbin/modinfo CDCEther
filename:    /lib/modules/2.4.19-pre6/kernel/drivers/usb/CDCEther.o
description: "USB CDC Ethernet driver"
author:      "Brad Hards and another"
parm:        multicast_filter_limit int, description "CDCEther maximum number 
of filtered multicast addresses"

HTH
Brad
-- 
http://conf.linux.org.au. 22-25Jan2003. Perth, Australia. Birds in Black.