>>>>> "Maciej" == Maciej W Rozycki <macro@xxxxxxxxxxxxxx> writes: Maciej> On Thu, 16 Feb 2006, Ralf Baechle wrote: >> That still leaves below gem to sort out. Maciej> Yeah -- there is that mmiowb() macro that is supposed to fit Maciej> here, but some MIPS-based hardware is ordered weakly (and Maciej> strangely) enough for this single macro to be a bit Maciej> insufficient. I think we should have at least mmiowb() and Maciej> mmiob() (corresponding to wmb() and mb(), respectively) as Maciej> there is a system we support that does writes in order, but Maciej> snoops the writeback buffer (the R3220). Another one is worse Maciej> yet as does all of that plus byte gathering (the R2020). At Maciej> least the latter cannot have the NCR/Emulex SCSI chip and uses Maciej> DEC's own design instead (a DC7061 gate array highly suspected Maciej> to also support DSSI if appropriately configured). Maciej> I'm not sure if we really need mmiorb() -- probably not. Just make mmiowb() strong enough on those platforms. There's really no reason to introduce yet another variation at this point. Jes
