Re: [Xenomai-help] PCI Framegrabber real-time driver

[Rodrigo Rosenfeld Rosas <lbocseg@domain.hid>]

Gilles Chanteperdrix escreveu:

>Rodrigo Rosenfeld Rosas wrote:
> > The memory is obtained passing the kernel the parameter "mem=510M". So, the 
> > kernel won't use the last 2 Mb. I know it is not an elegant solution but it's 
> > pretty simple and I can't imagine another one...
>
>Another one, suggested in "Linux devices drivers", chapter 8, is to
>allocate your memory at boot time with one of the alloc_bootmem
>functions. Of course, in order to call these functions, a small part of
>your driver need to run in the kernel itself.
>
>For more details, see:
>http://lwn.net/Kernel/LDD3/
>  
>
Yes, I knew about that, but the it was not an option at the time. I can 
not show the source code of the driver due to a contract or else I 
wouldn't have the specifications. So, if I need to use the driver in 
other places I will have to build a module and distribute only the 
module. I'm still thinking in other solutions but it is easier to ask 
the user to pass the kernel the mem parameter...

But thank you anyway!

Rodrigo.


	

	
		
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