Re: exposing kernel driver to user space app

[Greg KH <greg@xxxxxxxxx>]

On Wed, Aug 08, 2007 at 02:15:49PM -0700, ilya wrote:
> hello,
> 
> my name is ilya, i am a kernel newbie, and  i just
> joined the list in hopes of getting some insight on
> linux device driver development.
> 
> i am writing a kernel-mode driver for a pci card and
> i need a mechanism to control the device via user-space
> application. at first i had an additional character driver
> initialized along with my driver and using fread/fwrite
> i would transfer info back and forth. then i found out
> about sysfs, so now i am using files in sysfs to
> send "commands" to the driver and receive data back.

Ick, don't do that, it will not scale and you will get very confused
very quickly :)

Try using the new UIO iterface, it sounds like it might be a better
thing for this type of device.

thanks,

greg k-h

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