On Monday 28 May 2007 09:01, Julian Elischer wrote: > Hans Petter Selasky wrote: > > On Sunday 27 May 2007 23:53, John-Mark Gurney wrote: > >> Hans Petter Selasky wrote this message on Sun, May 27, 2007 at 22:35 +0200: > >>> I've got some reports back that some USB host controllers do not > >>> support transferring memory from a location higher than 2GB. > >>> > >>> What should we do about this? > >>> > >>> Should we limit all USB DMA allocations to the lower 2GB of the memory? > >> > >> No, a quirk table should be setup and pass the restriction to bus_dma > >> at tag initalization time when a broken controller is detected.. > > > > Yes, I can do that. But I am also thinking about a static quirk, like a > > sysctl you can set at boot time. > > > > I hope that this is not a wide-spread problem. > > What manufacturers are we talking about here? and is there any possibility > that it's not the USB chipset, but rather, some feature of an intermediary > bus?
Yes, that might be possible. I have asked the person that found the problem to send me his output from "pciconf -l -v". I will forward it to the USB list for discussion. --HPS _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to "[EMAIL PROTECTED]"
