(In reply to comment #18)
> 
> So I have some work to do on userspace, such as mesa. A huge project!

Actually, I don't think the relevant code for UVD support is that big.

> By the way, which version of mesa add big endian support.or you have some
> plans to do it.

As Christian said, the UVD code currently currently doesn't handle big endian
hosts properly yet. I don't know of any plans to fix that either, so don't wait
for us to do it. :)