On Thu, 2012-06-21 at 07:55 -0500, Anthony Liguori wrote:
> As long as we scrub the buffers, returning an unhandled error seems okay to
> me.
>
> I've long thought we should have some sort of generic way to throw an error
> and
> effectively pause a single device. I'm not sure how it would wo
On Thu, Jun 21, 2012 at 07:55:58AM -0500, Anthony Liguori wrote:
> On 06/21/2012 02:33 AM, Michael S. Tsirkin wrote:
> >On Thu, Jun 21, 2012 at 08:02:06AM +1000, Benjamin Herrenschmidt wrote:
> >>On Wed, 2012-06-20 at 16:40 -0500, Anthony Liguori wrote:
> >>
> >>>Well let's return void in the DMA m
On 06/21/2012 02:33 AM, Michael S. Tsirkin wrote:
On Thu, Jun 21, 2012 at 08:02:06AM +1000, Benjamin Herrenschmidt wrote:
On Wed, 2012-06-20 at 16:40 -0500, Anthony Liguori wrote:
Well let's return void in the DMA methods and let the IOMMUs assert on error.
At least that will avoid surprises u
On Thu, Jun 21, 2012 at 08:02:06AM +1000, Benjamin Herrenschmidt wrote:
> On Wed, 2012-06-20 at 16:40 -0500, Anthony Liguori wrote:
>
> > Well let's return void in the DMA methods and let the IOMMUs assert on
> > error.
> > At least that will avoid surprises until someone decides they care enoug
Hi,
>>> Why leave pci accessors and not implement usb_memory_rw() wrappers?
>>
>> Well, "usb" is a bit too generic, ehci and ohci would each need to have
>> their own sets of wrappers. But yes, that's possible... is it really
>> worth it ? There's nothing fundamentally wrong with using the dma_*
On Wed, 2012-06-20 at 16:40 -0500, Anthony Liguori wrote:
> Well let's return void in the DMA methods and let the IOMMUs assert on error.
> At least that will avoid surprises until someone decides they care enough
> about
> errors to touch all callers.
>
> I think silently failing a memcpy() c
On 06/20/2012 04:36 PM, Benjamin Herrenschmidt wrote:
Cc: Gerd Hoffmann
Cc: Michael S. Tsirkin
Signed-off-by: David Gibson
Signed-off-by: Benjamin Herrenschmidt
So... the DMA api is designed to allow for partial result returns which I
presume an implementation would use as a simplification.
> > Cc: Gerd Hoffmann
> > Cc: Michael S. Tsirkin
> >
> > Signed-off-by: David Gibson
> > Signed-off-by: Benjamin Herrenschmidt
>
>
> So... the DMA api is designed to allow for partial result returns which I
> presume an implementation would use as a simplification.
>
> But none of these caller
On 06/19/2012 01:39 AM, Benjamin Herrenschmidt wrote:
From: David Gibson
The OHCI device emulation can provide both PCI and SysBus OHCI
implementations. Because of this, it was not previously converted to
use the PCI DMA helper functions.
This patch converts it to use the new universal DMA hel
From: David Gibson
The OHCI device emulation can provide both PCI and SysBus OHCI
implementations. Because of this, it was not previously converted to
use the PCI DMA helper functions.
This patch converts it to use the new universal DMA helper functions.
In the PCI case, it obtains its DMAConte
From: David Gibson
The OHCI device emulation can provide both PCI and SysBus OHCI
implementations. Because of this, it was not previously converted to
use the PCI DMA helper functions.
This patch converts it to use the new universal DMA helper functions.
In the PCI case, it obtains its DMAConte
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