[parisc-linux] lasi scsi driver

Thomas Bogendoerfer tsbogend@alpha.franken.de
Sun, 5 Mar 2000 22:05:54 +0100


On Sun, Mar 05, 2000 at 07:46:52PM +0100, Philipp Rumpf wrote:
> uncacheable main memory is the only sane way to deal with cache-incoherent
> DMA - macros to flush the cache are both slower and harder to add to drivers
> written with the assumption that dma is cache-coherent.

I can't say how things are for PARISC, but in the MIPS world it's usually
better to use cached memory/flush caches than doing uncached accesses.
And adding cache flushes to a driver isn't that big task, if you know
the hardware (been there, done that).

Thomas.

-- 
   This device has completely bogus header. Compaq scores again :-|
It's a host bridge, but it should be called ghost bridge instead ;^)
                                        [Martin `MJ' Mares on linux-kernel]