I'm sorry for previous email content without greeting.
A bit more description… We are working on enabling RDMA over PCIe NTB on
OpenPOWER using https://github.com/ntrdma project. During initialization
dma_request_channel() founds no available channels. We also found that there no
channels at
We're trying to use Slave-DMA API of the DMA Engine in the linux kernel on
POWER8 OpenPOWER platform. And we discovered that dma_request_channel() always
fails.
Does it mean that Turismo hardware does not support Slave-DMA? Or DMA
subsystem in the linux kernel needs to be fixed, doesn't it?
