Messages in this thread | | | Date | Mon, 5 Feb 2007 19:55:44 +0100 | From | "Bartlomiej Zolnierkiewicz" <> | Subject | Re: Nvidia cable detection problems (was [PATCH] amd74xx: don't configure udma mode higher than BIOS did) |
| |
Hi,
On 2/5/07, Tejun Heo <htejun@gmail.com> wrote: > Alan wrote: > >> The *real* solution is to use the BIOS ACPI _GTM _STM methods for this. > >> Then you can remove all chipset specific knowledge from the IDE driver. > >> This is what the MS driver does on Windows, so you know it's received a > >> lot of testing from NVIDIA and board vendors.
Allen, thanks for quick reply.
Your mail explained the issue pretty well and saved us a lot of time.
> > Well we can certainly do some of that if ACPI is present and active. In > > particular since _GTM will give us current modes allowing for hotplug and > > post BIOS boot kexec etc it ought to be safe to do Tejun's hack that way. > > We could even probe UDMA3+ capable devices by doing _STM to a high mode > > and _GTM to determine the cable type 8)
agreed
> Glad to see the problem getting solved. Now that we know the solution, > any volunteers? :-)
Well, since you posted the initial patches and have the affected hardware... 8)
Thanks, Bart - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |