On Wednesday 26 October 2005 11:54 am, Scott Long wrote: > > Perhaps on i386. Each arch implements sync(). Argh, it does look like > > the memory barriers needed on e.g., Alpha aren't used with static buffers > > because of the map != NULL check in sys/busdma.h. *sigh* I guess archs > > that need membars even without bounce buffers need to always allocate and > > setup a bus_dmamap. None of that matters for i386 though. > > Feel free to fix alpha. Again, long ago, I thought that alpha pretended > to be coherent in the 2GB DMA window that we use so that it could be > more like i386. If that's not true then that's fine. If you need to > make structural changes to the MI code on order to fix alpha, please let > me know.
No, I'm just a moron. Alpha uses the nobounce_map for static buffers, so bus_dmamap_sync will use the appropriate membars. -- John Baldwin <[EMAIL PROTECTED]> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.org _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
