Konstantin A. Lepikhov wrote:
Hi Tejun!
Friday 25, at 02:50:06 PM you wrote:
Andrew Paprocki wrote:
I have an SB600/RS690 here with SATA drives connected. I haven't been
following this thread, but I can help test something if it would help.
We're trying to determine whether SB600 ahci controller can do 64bit DMA
or not. Srihari's couldn't but Shane's test result tells a different
story. Do you have memory mapped over 4G (if you have 4G some of them
will be over 4G, you can know this by looking at the e820 map printed
during boot)?
$ lspci -nn
00:00.0 Host bridge [0600]: ATI Technologies Inc RD580 [CrossFire Xpress 3200] Chipset Host Bridge [1002:5952]
00:02.0 PCI bridge [0604]: ATI Technologies Inc RS480 PCI-X Root Port [1002:5a34]
00:05.0 PCI bridge [0604]: ATI Technologies Inc RS480 PCI Bridge [1002:5a37]
00:12.0 SATA controller [0106]: ATI Technologies Inc SB600 Non-Raid-5 SATA [1002:4380]
...
Is this hardware enough for testing? I can add 2G to existing 4G of RAM
and post dmesg.
"greater than 4G" would be a highly useful configuration...
Jeff
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