Re: Accessing ISA board memory

From: michel (kloury@ifrance.com)
Date: Thu Apr 06 2000 - 07:50:41 EST


Hello

> >
> > Hello,
> >
> > Just to clarify ma question.
> > I want to access to memory : 0xe00000-0x1000000 which is located on a ISA board.

!!!! I want to access memory from 0xe00000 to 0x1000000.

> > I don't want Linux to use these adresses, so i need a kind of system exclusion,
> > perhaps on memory initialisation and I also need to know what virtual adresses
> > correspond to theses physical adresses.
> >
> #define LEN (0x1000000 - 0xe00000)
> ^^^^^^^_____ Are you sure?
>
> whatever *p;
>
> p = (whatever *) ioremap(0xe00000, LEN);

!!!!! With LEN=1024*1024 ioremap return me an error.

>
>
> Cheers,
> Dick Johnson
>
> Penguin : Linux version 2.3.41 on an i686 machine (800.63 BogoMips).

Regards
Michel
 
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