Re: OpenBlockS600 (AMCC 405EX)

[KIYOHARA Takashi <kiyohara%kk.iij4u.or.jp@localhost>]

Hi! Simon,


From: Simon Burge <simonb%NetBSD.org@localhost>
Date: Fri, 25 Dec 2009 00:02:40 +1100

> 1: I haven't looked closely enough, but I suspect the 440 emac support is
>    theoretical only?  If so, maybe better to separate out the devices that
>    have been tested compared with those that haven't

I agree.  ;-)


> + * emac(4) supports following ibm4xx's EMACs.

- *   XXXX: ZMII and 'TCP Accelaration Hardware' not support yet...
+ *   tested 405GP/GPr/EX only.  (x2, STA v2, 256bit-Hash-Table, MAL v2, RGMII)

> + *
> + * 405EP       10/100 x2
> + * 405EX/EXr   10/100/1000 x2 (EXr x1), STA v2, 8 hash-Table, MAL v2, RGMII
> + * 405GP/GPr   10/100
> + * 440EP       10/100 x2, ZMII
> + * 440GP       10/100 x2, MAL v2, ZMII
> + * 440GX       10/100/1000 x4, MAL v2, ZMII/RGMII(ch 2, 3), TAH(ch 2, 3)
> + * 440SP       10/100/1000, MAL v2
> + * 440SPe      10/100/1000, STA v2, MAL v2
> + */


> 2: Related to the above, you test for OPB_FLAGS_EMAC_STACV2 only inside a
>    OPB_FLAGS_EMAC_GBE block, but from memory the 10/100 MACs on the 440GX
>    still use the new format registers.

hmm?
I found register of old format of EMACx_STACR in "PPC440GX Embedded
Processor User's Manual".  It can download from AMCC.


> 3: I assume you tested the updated emac code on a machine with an older emac 
>    (like a 405GP)? :)  I can dig out a 405GP Walnut if you want that tested
>    and can't do so yourself.

I can test on OpenBlockS266 (405GPr) after several days.

Thanks,
--
kiyohara