On Wed, Mar 21, 2001 at 12:48:41AM -0000, eeh@netbsd.org wrote:
> 
> 	I saw this before sbus streaming cache was fixed by adding
> 	BUS_DMA_COHERENT flags to bus_dmamap_load in hme.c.
> 	I think iommu.c changes from BUS_DMA_COHERENT to BUS_DMA_STREAMING
> 	broke the driver(s). The fix should be straightforward
> 	replacing those defines in all sbus-related drivers to new define.
> 	The patch for hme.c is below.
> 
> 		Andrey
> 
> 	Index: hme.c
> 	===================================================================
> 	RCS file: /cvsroot/syssrc/sys/dev/ic/hme.c,v
> 	retrieving revision 1.20
> 	diff -c -r1.20 hme.c
> 	*** hme.c       2000/12/14 06:27:25     1.20
> 	--- hme.c       2001/03/21 00:27:56
> 	***************
> 	*** 232,238 ****
> 	        /* Load the buffer */
> 	        if ((error = bus_dmamap_load(dmatag, sc->sc_dmamap,
> 	            sc->sc_rb.rb_membase, size, NULL,
> 	!           BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) {
> 	                printf("%s: DMA buffer map load error %d\n",
> 	                        sc->sc_dev.dv_xname, error);
> 	                bus_dmamem_free(dmatag, &seg, rseg);
> 	--- 232,238 ----
> 	        /* Load the buffer */
> 	        if ((error = bus_dmamap_load(dmatag, sc->sc_dmamap,
> 	            sc->sc_rb.rb_membase, size, NULL,
> 	!           BUS_DMA_NOWAIT|BUS_DMA_STREAMING)) != 0) {
> 	                printf("%s: DMA buffer map load error %d\n",
> 	                        sc->sc_dev.dv_xname, error);
> 	                bus_dmamem_free(dmatag, &seg, rseg);
> 
> This is actually exactly the opposite of what you
> want.  BUS_DMA_STREAMING == !BUS_DMA_COHERENT.
> 
> Eduardo
> 

oops, I should've upgraded to -current before I spoke, I'm still on 1.5R.
I'll test it shortly.

	Andrey