Re: libata/sata_nv latency on NVIDIA CK804 [was Re: AMD64 X2 lostticks on PM timer]
From: Jeff Garzik
Date: Wed Mar 15 2006 - 17:48:03 EST
Ingo Molnar wrote:
* Jeff Garzik <jeff@xxxxxxxxxx> wrote:
It won't work at all...
ok.
You have to stop talking to PCI IDE registers completely (consumes 5
PCI BARs), and talk exclusively to the MMIO 6th PCI BAR, at
non-standard offsets and a using a proprietary DMA descriptor format
[all public now in that link I just sent].
just to make it easier to test: i've attached the new sata_nv.c file,
which, to test it, should be copied over the existing
drivers/scsi/sata_nv.c file, correct?
Alas, it is far from that simple :(
The code I linked to isn't in a working state. NV contributed it
largely as "it worked at one time" documentation of a
previously-undocumented register interface.
Someone needs to debug it.
Jeff
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/