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SubjectRe: isa memory address
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On Mon, 2004-11-08 at 17:46, Randy.Dunlap wrote:
> Antonino Sergi wrote:
> > Hi,
> >
> > I'm working with an old data acquisition system that uses an 8-bit card
> > in an ISA slot (address 0xd0000), by a simple driver I ported from
> > kernel 1.1.x to 2.2.24.
> >
> > It works fine, but I'd like to have features by newer kernels (2.4 or
> > even 2.6), like new filesystems support.
> >
> > On kernels >=2.4.0 check_region returns -EBUSY for that address,
> > but it is not actually used; I tried to understand if something has been
> > changed/removed, because of obsolescence of devices, in IO management,
> > but I couldn't.
> >
> > Does anybody have any explanation/suggestion?
>
> Please post contents of /proc/iomem .
> I'm guessing that it will show something like:
> 000e0000-000effff : Extension ROM
I can't. Now it is installed redhat 6.2 (2.2.14) (I gave up about this
issue some moths ago) and I think I won't ever succeed in satisfying rpm
dep to install a compiled 2.6.x. I'll try to compile it from scratch
ASAP
> (but for address 000d0000).
> So then the question becomes how to assign/allocate it for your
> driver.
>
> You might have to dummy up a call to release_resource() first,
> then use request_resource() to acquire it.
> Or just use the addresses anyway.... even though check_region() says
> -EBUSY.
I'll try, but the question is why this would be needed?

Thank you

> > PS:As I'm not subscribed, please CC me your answers.



Antonino Sergi <Antonino.Sergi@Roma1.INFN.it>

Radiodating Laboratory
Physics Department
University of Rome "La Sapienza"
P.le Aldo Moro 2
00185 Rome Italy
Tel +390649914206
Fax +390649914208


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