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Date: Mon, 11 Jun 2012 16:38:04 +0200
From: "Edgar E. Iglesias" <edgar.iglesias@gmail.com>
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Subject: Re: [Qemu-devel] [RFC] QOMification of AXI stream
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To: Peter Maydell <peter.maydell@linaro.org>
Cc: Anthony Liguori <aliguori@us.ibm.com>, Michal Simek <monstr@monstr.eu>, "qemu-devel@nongnu.org Developers" <qemu-devel@nongnu.org>, Peter Crosthwaite <peter.crosthwaite@petalogix.com>, Paul Brook <paul@codesourcery.com>, Anthony Liguori <anthony@codemonkey.ws>, Andreas =?iso-8859-1?Q?F=E4rber?= <afaerber@suse.de>, John Williams <john.williams@petalogix.com>

On Mon, Jun 11, 2012 at 02:39:56PM +0100, Peter Maydell wrote:
> On 11 June 2012 14:15, Anthony Liguori <aliguori@us.ibm.com> wrote:
> > From what you said earlier, it's basically:
> >
> > 'write data to this address'
> > 'read data from this address'
> >
> > An interface that implements this is DMAContext.  Forget about the fact that
> > 'DMA' is in the name.  It's really the symmetric version of a MemoryRegion.
> 
> ...so can we fix the name?
> 
> Ideally the interface used by DMA controllers should be identical to
> the interface used by CPUs to talk to the rest of the system: it's
> exactly the same bus interface in hardware, after all.

I thought we were talking about the interface between the DMA ctrl
and the I/O (devices). Not between the DMA and the "memory" bus system.

Cheers