Re: Kernel or patch suggestions for DMA enables Marvell Driver

[Terrence Martin <tmartin@physics.ucsd.edu>]

Bogdan Costescu wrote:
> On Tue, 20 Dec 2005, Terrence Martin wrote:
>
>> sata_mv 0000:03:04.0: 32 slots 4 ports unknown mode IRQ via MSI
>
> This line seems to suggest that you have MSI enabled in your kernel 
> config. Both me and Jeff Garzik had to disable it in order to get the 
> driver to work with our Marvell controllers. However, your log shows 
> the driver proceeding further than in my case, so maybe you have a 
> setup that would allow using MSI - what mainboard is this ? (you 
> mentioned Supermicro, but not the model number, unless I missed it...)
>
I am not sure if the email I sent got through. I am resending the 
motherboard info as well as I have some good news.

The are three motherboards

Supermicro X6DVL-EG2 EM64T
Supermicro X6DHR-TG EM64T
Supermicro  H8DAR-T Opteron

So I compiled 2.6.15-r5 without MSI enabled. The system booted and the 
disks are up and running. hdparm gives 65MB/s for a single disk. I am 
going to raid0 these disks and see what I can get when actually writing 
data.

Looking at MSI though it seems to indicate that without it I cannot get 
PCI-Express to work? It is not critical but I would like to be able to 
use PCI-E on the motherboard that supports it (two PCI-E Slots). I am 
happy to help with figuring out why there is this incompatibility with 
this feature.

Terrence