> On Mon, Dec 12, 2011 at 03:54:57PM +1100, matthew green wrote: > > > > > On Mon, Dec 12, 2011 at 02:44:15AM +0000, Jonathan A. Kollasch wrote: > > > > Module Name: src > > > > Committed By: jakllsch > > > > Date: Mon Dec 12 02:44:15 UTC 2011 > > > > > > > > Modified Files: > > > > src/sys/dev/pci: if_sip.c > > > > > > > > Log Message: > > > > Using BUS_DMA_NOCACHE for bus_dmamem_map() causes issues on (at least) > > > > sparc64. > > > > > > What kind of issues? > > > > this is maping normal memory uncached. attempting to access this > > mapping causes data faults. > > Jonathan, please add some explanation to the commit message. > > Isn't this just covering a bug in the sparc64 bus_dma(9) implementation?
that's what i have been wondering since writing the above. eeh, should we turn off CP/CV and E bits for ram BUS_DMA_NOCACHE addresses, instead of device memory? .mrg.
