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Date: Mon, 11 Jun 2012 10:01:08 -0500
From: Anthony Liguori <anthony@codemonkey.ws>
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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>, "Edgar E. Iglesias" <edgar.iglesias@gmail.com>, =?UTF-8?B?QW5kcmVhcyBGw6RyYmVy?= <afaerber@suse.de>, John Williams <john.williams@petalogix.com>, Avi Kivity <avi@redhat.com>

On 06/11/2012 08:39 AM, 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?

Perhaps we should just make MemoryRegion work in both directions?

Ben/Avi, what do you guys think?

Regards,

Anthony Liguori

>
> 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.
>
> -- PMM