Messages in this thread | | | Date | Tue, 06 Feb 2007 03:36:17 +0900 | From | Tejun Heo <> | Subject | Re: Nvidia cable detection problems (was [PATCH] amd74xx: don't configure udma mode higher than BIOS did) |
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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? :-)
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