Steven Stallion wrote:
> Steven Stallion wrote:
>
>> Garrett/All,
>>
>> There is an issue with dnet(7D) in which it does not select the MII PHY
>> on a DEC 21143 (the faulty behavior seems to be isolated in
>> find_active_media). This is making the remainder of the conversion very
>> difficult (i.e. not being able to rely on mii soft state for link
>> notification).
>>
>> I'd like to put together a separate patch for this problem since it is
>> fairly limited in scope and really has nothing to do with the conversion
>> itself. As it is, the conversion patch affects nearly 1,000 lines
>> (roughly 20% of the overall source).
>>
>> (FWIW, I've already submitted a bug report to bugs under driver/dnet)
>>
>> Thoughts?
>>
>> Steve
>>
>>
>
> After digging into this in more detail, it seems that the SROM for the
> 21143 only returns 2 different block types: SIA and SYM. However, there
> there are 4 blocks provided (types 2 and 4 are repeated; the sequence
> is: 2 -> 2 -> 4 -> 4, which indicates the SYM block as the highest
> priority).
>
> This seems odd... the DEC SROM Specification seems to imply that a 21143
> would support MII blocks as well. Should I perhaps look into updating
> the dnet code to better support SYM PHY's?
>
Yes. You probably have a card that lacks an MII xcvr. Just because the
chip can deal with MII doesn't mean you have an MII device populated on
the board.
> I am still double checking the SROM parsing code, but so far it appears
> to be correct.
>
It probably is. Older parts used the SYM, unfortunately. Its one of
the things that makes dnet such a pain.
-- Garrett
> Any ideas ?
>
> Steve
>
>
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