tech-kern archive

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]

Re: uhci on non-x86

On Tue, 13 May 2008 13:37:17 -0400
Michael Lorenz <> wrote:

> Hash: SHA1
> Hello,
> I dimly remember a thread about uhci not working very well no non-x86  
> machines.
> Yesterday I put VIA uhci/ehci board into my O2, connected to a USB  
> harddisk. After torturing it for about 5 minutes with bonnie++ uhci  
> complained about a DMA error and detached both umass and sd.
> Is this a known problem? I had an ex in there before which worked  
> perfectly fine.

I couldn't get a VIA uhci/ehci board to work reliably on sparc64 when I
tried a couple of months ago. I guess it is a DMA coherency issue.
You could try the "itohy-usb1" branch. I think it's supposed to fix
such issues. I don't know what the current state of the code is, though.


Home | Main Index | Thread Index | Old Index