1394 OHCI Port Driver API

Hi all,

Currently I am looking for an API that gives me access to the LLC and PHY
registers on my 1394 board. I need this because I want to be able to read
the type/version information from these chips since some work better than
others. It seems that there is no such functionality in the 1394.h
headerfile that ships with the DDK.

I have done such a thing before, but then I did it the hard (and ugly?) way:
- scan the PCI bus for the 1394 board
- Use the PCI interface to access the LLC chip.
- Access the PHY trough the LLC chip.

I think this is not really thread safe because I have to set the page
registers in the PHY, which can be altered in between by the port driver.

So, the question is, does anybody know a (more) neat way to do this? Any
suggestions will be appreciated.

Best regards, Jeroen.

Doron
Mon Aug 07 09:58:38 CDT 2006

you could install a lower filter driver below the port driver that did the
reading of these registers when it processed IRP_MN_START_DEVICE. you would
then need to commonicate that to your driver. either both devices (The FDO
and the filter) are in the same driver (which makes it easier to pass data)
or are in separate drivers, in which case you need to use device interfaces,
control devices, or ex callbacks.

d

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Please do not send e-mail directly to this alias. this alias is for
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This posting is provided "AS IS" with no warranties, and confers no rights.


"Jeroen Koeter" <j_koeter@hotmail.com> wrote in message
news:OfaL$diuGHA.5056@TK2MSFTNGP06.phx.gbl...
> Hi all,
>
> Currently I am looking for an API that gives me access to the LLC and PHY
> registers on my 1394 board. I need this because I want to be able to read
> the type/version information from these chips since some work better than
> others. It seems that there is no such functionality in the 1394.h
> headerfile that ships with the DDK.
>
> I have done such a thing before, but then I did it the hard (and ugly?)
> way:
> - scan the PCI bus for the 1394 board
> - Use the PCI interface to access the LLC chip.
> - Access the PHY trough the LLC chip.
>
> I think this is not really thread safe because I have to set the page
> registers in the PHY, which can be altered in between by the port driver.
>
> So, the question is, does anybody know a (more) neat way to do this? Any
> suggestions will be appreciated.
>
> Best regards, Jeroen.
>

r_konjeti
Wed Aug 30 15:01:14 CDT 2006

Joreon,

>> Currently I am looking for an API that gives me access to the LLC and PHY
>> registers on my 1394 board. I need this because I want to be able to read
>> the type/version information from these chips since some work better than
>> others.

I am working on a 1394 driver. Can you give me some data on which
type/versions of LLC and PHY work better than other.

Thanks,
Raj

Doron Holan [MS] wrote:
> you could install a lower filter driver below the port driver that did the
> reading of these registers when it processed IRP_MN_START_DEVICE. you would
> then need to commonicate that to your driver. either both devices (The FDO
> and the filter) are in the same driver (which makes it easier to pass data)
> or are in separate drivers, in which case you need to use device interfaces,
> control devices, or ex callbacks.
>
> d
>
> --
> Please do not send e-mail directly to this alias. this alias is for
> newsgroup purposes only.
> This posting is provided "AS IS" with no warranties, and confers no rights.
>
>
> "Jeroen Koeter" <j_koeter@hotmail.com> wrote in message
> news:OfaL$diuGHA.5056@TK2MSFTNGP06.phx.gbl...
> > Hi all,
> >
> > Currently I am looking for an API that gives me access to the LLC and PHY
> > registers on my 1394 board. I need this because I want to be able to read
> > the type/version information from these chips since some work better than
> > others. It seems that there is no such functionality in the 1394.h
> > headerfile that ships with the DDK.
> >
> > I have done such a thing before, but then I did it the hard (and ugly?)
> > way:
> > - scan the PCI bus for the 1394 board
> > - Use the PCI interface to access the LLC chip.
> > - Access the PHY trough the LLC chip.
> >
> > I think this is not really thread safe because I have to set the page
> > registers in the PHY, which can be altered in between by the port driver.
> >
> > So, the question is, does anybody know a (more) neat way to do this? Any
> > suggestions will be appreciated.
> >
> > Best regards, Jeroen.
> >