On Thu, Jan 29, 2015 at 08:45:34AM -0500, Stefan Monnier wrote: > > You may also need some DMA changes. I've got a patch for this but have > > never tested it. > > I really would like to keep using my little server for another 5 years > or more, and I don't see that happening if it doesn't get merged > into mainline.
You absolutely need DMA for a server? Really? > IIUC the main first step is to fix the DMA code so as to allow > concurrent DMA. Where in the code is this limitation to "only one > DMA at a time"? It's not really a limitation of the number of clients, but the number of concurrent transfers, and it actually works like that in hardware, it's just re-emulated in software too. > PS: Looking at recent coding activity, it seems there's more interest in > adding basic support for new SoCs than for improving support for "old" > ones. So we end up with basic support for lots of devices but good > support for none :-( These days, we're three of us doing some work, including fixing existing bugs, maintaining the code, etc. That, and I'm not sure that focusing on a five years old SoCs while ignoring any new SoC is the right policy. linux-sunxi did that with the A31, look at where it is now. No support for the A31, A31s, A23, A33, A80, basically all the designs that are going out today are unsupported. Sure, the A10 works great. How many A10-based devices went out last year? BUT, it's true that we still have a partial support for the older SoCs. There's still no display support, no audio support. And anyone is very welcome to contribute or help in that effort. But unless you're giving us our paycheck, you don't get to order us what to work on and what not. Maxime -- Maxime Ripard, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
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