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Re: OpenBlockS600 (AMCC 405EX)
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.
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.
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