Re: Nvidia cable detection problems (was [PATCH] amd74xx: don't configureudma mode higher than BIOS did)

[Tejun Heo]

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.
> 
> 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)

Glad to see the problem getting solved.  Now that we know the solution,
any volunteers?  :-)

-- 
tejun
-
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/