sparc64/141918: [ehci] ehci_interrupt: unrecoverable error, controller halted (sparc64)

[Hans Petter Selasky]

On Monday 08 February 2010 10:10:03 Marius Strobl wrote:
> The following reply was made to PR sparc64/141918; it has been noted by
>  GNATS.
> 
> From: Marius Strobl <marius at alchemy.franken.de>
> To: linimon at freebsd.org, bug-followup at freebsd.org, bel at orel.ru
> Cc:
> Subject: Re: sparc64/141918: [ehci] ehci_interrupt: unrecoverable error,
>  controller halted (sparc64) Date: Mon, 8 Feb 2010 10:07:42 +0100
> 
>  On Mon, Feb 08, 2010 at 07:05:29AM +0000, linimon at freebsd.org wrote:
>  > hps claims that this may be sparc64-specific.
> 
>  As outlined here it's unlikely that this is a problem of the sparc64
>  bus_dmamap_sync(9):

Hi,


>  http://lists.freebsd.org/pipermail/freebsd-sparc64/2009-December/006866.ht
> ml There are however known problems with usb(4) in this regard, see for

The issue mentioned above was patched in 9-current some months back. Have you 
tried 9-current?

>  http://svn.freebsd.org/viewvc/base?view=revision&revision=203080

On point about busdma is that you should be able to pass any kernel virtual 
address to be loaded into DMA. If the kernel virtual address is not correctly 
aligned, a bounce page must be used, so that surrounding memory is not 
disturbed. And that is not an USB problem.

--HPS