atom feed17 messages in org.freebsd.freebsd-usb31st address line sometimes not used ...
FromSent OnAttachments
Hans Petter SelaskyMay 27, 2007 8:35 pm 
M. Warner LoshMay 27, 2007 8:55 pm 
John-Mark GurneyMay 27, 2007 10:19 pm 
Hans Petter SelaskyMay 28, 2007 6:43 am 
Hans Petter SelaskyMay 28, 2007 6:53 am 
Hans Petter SelaskyMay 28, 2007 7:04 am 
Julian ElischerMay 28, 2007 7:15 am 
John-Mark GurneyMay 28, 2007 7:50 am 
Julian ElischerMay 28, 2007 7:59 am 
Hans Petter SelaskyJun 11, 2007 7:19 am 
Julian ElischerJun 12, 2007 5:29 pm 
Hans Petter SelaskyJun 13, 2007 9:04 am 
Julian ElischerJun 15, 2007 7:35 pm 
Hans Petter SelaskyJun 18, 2007 6:26 am 
M. Warner LoshJun 18, 2007 7:39 pm 
Thomas SparrevohnJun 19, 2007 8:49 am 
Alexander LeidingerJun 19, 2007 12:08 pm 
Subject:31st address line sometimes not used on EHCI/UHCI/OHCI
From:John-Mark Gurney (gurn@resnet.uoregon.edu)
Date:May 27, 2007 10:19:20 pm
List:org.freebsd.freebsd-usb

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..

-- John-Mark Gurney Voice: +1 415 225 5579

"All that I will do, has been done, All that I have, has not."