Hello.
Gupta, Ajay Kumar wrote:
Hello.
Russell King - ARM Linux wrote:
Is there any updated patch on cppi4.1 core also?
Is there _any_ cppi4.1 core patch anywhere? Not according to google.
Russell,
Here is the latest ersion of cppi4.1 core.
http://patchwork.kernel.org/patch/46698/
[...]
If it's a USB DMA device (from the patches I can find, that seems to be
the case) then why can't it live in drivers/usb or drivers/dma ?
CPPI4.1 DMA engine can be used either by USB or by Ethernet interface though
currently only USB is using it but in future even Ethernet devices may use it.
drivers/dma does seem to be the right place for this.
Russell, it makes me wonder why drivers/dma/ seemed the right place to
you, just because of the name? :-)
After spending some time on studying the infrastructure there I came to
conclusion that this is not the right place because all the controllers
supported there have features like memory-to-memory transfers or even RAID
function offloading -- which CPPI 4.1 totally lacks (it's there purely to
serve the peripherals).
Adding drivers/dma/ people to this discussion in hopes they can correct
me (or support me :-)...
As this discussion is taking time which is affecting the further
development and bug fixes on CPPI4.1.
So can we move CPPI4.1 files to drivers/usb/musb for time being +
I'm not going to do that.
WBR, Sergei
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