Re: ASUS M2A-VM - AMD690G - SB600 Non-Raid-5 SATA - problem

[Tejun Heo <htejun@gmail.com>]

Srihari Vijayaraghavan wrote:
> --- Tejun Heo <htejun@gmail.com> wrote:
>> Srihari Vijayaraghavan wrote:
>>>> Oh well, that's the price you have to pay when you 1. have a device
>>>> which can't access memory above 4G but 2. don't have IOMMU to do it for
>>>> the device.  If performance becomes problem, you can always get a
>>>> not-so-expensive external controller which can do 64.
> 
> Can the Skymaster S3132, based on Sil3132,
> (http://umart.net/au/product_info.php?cPath=21_211&products_id=106108) do 64
> bit DMA on Linux?

Yeah, sil3124/32 can do 64bit alright.

> If so, I'm happy to buy that to isolate whether the current problem is limited
> to SB600 SATA controller alone on AMD690G chipset.

I'm too.  Please let me know when you find out.  :-P

> It'd be nice if somebody from AMD/ATI could confirm the 64 bit DMA capability
> of SB600 SATA controller. (I observe a few AMD/ATI folks have been submitting
> a few patches on LKML lately, so who knows.)

Maybe you can cc the ATI person here if you know the address.

> PS: FWIW, SB600 with your ahci fix has been working fine for the past week.
> Thank you for that.

Great.

-- 
tejun