Mapping large PCMCIA common memory in NDIS miniport

Dear all

I'm porting PCMCIA wireless LAN adapter to Windows CE 4.2 on Samsung SMDK2410 boar

Since, our PCMCIA adapter use large common memmory about 2.25MB
I tried to map common memory space in MiniportInitialize() with NdisMMapIoSpace() function like this
-------------------
Status = NdisMMapIoSpace( (PVOID *)(&(pAdapter->pMemVirtual))
pAdapter->MiniportAdapterHandle
pAdapter->MemBaseAddr
pAdapter->MemSpaceSize); // MemSpaceSize = 0x24000
------------------
but, this code generates OUT_OF_RESOURCE error

I suppose that the reason of error is the memory size is too large

Is it possible to map such large size of PCMCIA common memory
If possible, how can I do that

Thanks in advance...

Seung
Thu Apr 01 12:33:01 CST 2004

The problem will even be more extensive as the size of the PCMCIA memory=
=

window is platform specific. Generally you should have enough window spa=
ce =

as early Flash cards were flash chip arrays mapped into the local =

processor space (up to 64MB). But as these cards become more scarce ther=
e =

isn't much of a need to make the window large anymore. You could try to =

take the base address which should just be the physical address (system =

bus address) and perform your own virtualalloc/copy. You also have to =

consider that you are operating in the device.exe process, you could be =

running out of virtual memory or mapping resources.


On Wed, 31 Mar 2004 23:21:07 -0800, JM Son =

<minibrain(removethis_nospam)@hotmail.com> wrote:

> Dear all,
>
> I'm porting PCMCIA wireless LAN adapter to Windows CE 4.2 on Samsung =

> SMDK2410 board
>
> Since, our PCMCIA adapter use large common memmory about 2.25MB,
> I tried to map common memory space in MiniportInitialize() with =

> NdisMMapIoSpace() function like this:
> --------------------
> Status =3D NdisMMapIoSpace( (PVOID *)(&(pAdapter->pMemVirtual)),
> pAdapter->MiniportAdapterHandle,
> pAdapter->MemBaseAddr,
> pAdapter->MemSpaceSize); // MemSpaceSize =
=3D =

> 0x240000
> -------------------
> but, this code generates OUT_OF_RESOURCE error.
>
> I suppose that the reason of error is the memory size is too large.
>
> Is it possible to map such large size of PCMCIA common memory?
> If possible, how can I do that?
>
>
> Thanks in advance...



-- =

Seung Yi
Chief Technologist
Codetelligence, Inc.
Web : www.codetelligence.com