On Wed, 2006-07-26 at 11:14 -0400, Mark Lord wrote: > zhao, forrest wrote: > > Hello, all > > > > In ACPI spec 3.0, section 9.9 defines 4 objects for PATA/SATA: > > > > _GTF is for both PATA and SATA, which is used to return ATA task file > > needed to re-init the drive; > > _SDD is SATA-only object, which is used to inform the platform of the > > type of device attached to a port; > > _GTM and _STM are PATA-only objects, which are used to get/set PATA > > timing information(i.e. PIO and DMA speed). > > It seems to be quite common for ICH*M notebooks to use the SATA ports > to attach PATA drives with PATA->SATA bridge chips in the middle. > > In this case, one would expect the _GTM and _STM objects to be necessary, > even though Linux thinks it's a SATA situation. > Hi Mark, I re-read the section 9.9 of ACPI spec 3.0, but didn't find any description about how to deal with "PATA->SATA bridge". Is this version of APCI spec outdated? Would you please point me to spec(or document), which has the description of how to deal with "PATA->SATA bridge"? Thanks, Forrest - : send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
