I'm trying to get port multiplier working on Marvell 6121 esata port.
So far, I've found lkml discussion on how AHCI doesn't seem to support
it [1] and verified that it's still the case.
sata_mv doesn't support it either - I only see the 1st drive in the
multiplier
There used to be an official Asus driver called mv_thor [2] for really
old versions (2.6.20-something) and someone maintained it until 2.6.27 [3].
The good news is I tried it on 2.6.27 (Fedora 10) and it works!
Questions:
Can someone who knows how the AHCI driver works take a look at the
mv_thor code and figure out why PMP doesn't work in AHCI driver? Most
likely it's just some quirk to get the chip initialized...
And since the answer to the previous is most likely "we're too busy,
look at it yourself" the followup question is
Is there an easy way of recompiling/trying the AHCI module without
having to recompile the entire kernel/rebooting?
Thanks!
[1] http://marc.info/?t=121747549500001&r=1&w=1
[2]
http://en.wikipedia.org/wiki/List_of_Marvell_Technology_Group_chipsets#Linux_SATA_driver
[3] http://forums.gentoo.org/viewtopic-p-5213724.html#5213724
Is there an easy way of recompiling/trying the AHCI module without
having to recompile the entire kernel/rebooting?
Thanks
On 03/09/2011 11:28 AM, Konstantin Svist wrote:
> I'm trying to get port multiplier working on Marvell 6121 esata port.
> So far, I've found lkml discussion on how AHCI doesn't seem to support
> it [1] and verified that it's still the case.
> sata_mv doesn't support it either - I only see the 1st drive in the
> multiplier
>
> There used to be an official Asus driver called mv_thor [2] for really
> old versions (2.6.20-something) and someone maintained it until 2.6.27
> [3].
> The good news is I tried it on 2.6.27 (Fedora 10) and it works!
>
> Questions:
> Can someone who knows how the AHCI driver works take a look at the
> mv_thor code and figure out why PMP doesn't work in AHCI driver? Most
> likely it's just some quirk to get the chip initialized...
>
> And since the answer to the previous is most likely "we're too busy,
> look at it yourself" the followup question is
> Is there an easy way of recompiling/trying the AHCI module without
> having to recompile the entire kernel/rebooting?
>
> Thanks!
>
>
> [1] http://marc.info/?t=121747549500001&r=1&w=1
> [2]
> http://en.wikipedia.org/wiki/List_of_Marvell_Technology_Group_chipsets#Linux_SATA_driver
> [3] http://forums.gentoo.org/viewtopic-p-5213724.html#5213724
>
>