On Thursday, February 14, 2013 9:45:22 pm Adrian Chadd wrote: > On 14 February 2013 13:35, John Baldwin <j...@freebsd.org> wrote: > > > ISA bounces anything above 16GB. They are bouncing. I know it works for > > some > > people as I fixed a bug in the ISA bounce buffer code somewhat recentish: > > You mean 16MB, right?
Yes, doh! > There's a secondary bounce buffer thing needed for 32 bit PCI devices > on a 64 bit machine with > 4 GB of physical RAM, right? That is handled via the tags passed to bus_dma. ISA DMA doesn't currently use bus_dma but reimplements its own bounce handling. -- John Baldwin _______________________________________________ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
