On Friday 22 September 2017 03:40 AM, Thomas Monjalon wrote:
09/09/2017 13:20, Shreyansh Jain:
DPAA, or Datapath Acceleration Architecture [R2], is a set of hardware
components designed for high-speed network packet processing. This
architecture provides the infrastructure to support simplified sharing of
networking interfaces and accelerators by multiple CPU cores, and the
accelerators themselves.
This patchset introduces the following:
1. DPAA Bus (drivers/bus/dpaa)
The core of DPAA bus is implemented using 3 main hardware blocks: QMan,
or Queue Manager; BMan, or Buffer Manager and FMan, or Frame Manager.
The patches introduce necessary layers to expose the DPAA hardware
blocks for interfacing with RTE framework.
I guess these are the same blocks as for DPAA2?
They are in drivers/bus/fslmc/
Why introducing yet another bus driver?
The fslmc one was supposed to cover any Freescale (NXP (Qualcomm)) SoC.
Forgot to reply to this in previous email:
No, fslmc is not compatible with DPAA. They are completely different
architectures.
I am not sure why you have the notion "fslmc one was supposed to cover
any Freescale (NXP (Qualcomm)) SoC". That is not correct - FSLMC was
always for supporting DPAA2 which is based on VFIO. DPAA is more closer
to a platform layout.
And I don't think we should have single "bus/fslmc" just so that it can
encompass all NXP SoC. I am assuming you didn't mean this :P.
2. DPAA Mempool (drivers/mempool/dpaa)
BMan, or Buffer Manager, block of DPAA features a hardware offloaded
mempool. These patches add support for a driver to manage the BMan
block. This driver allows for mempool creation, deletion, buffer
acquire and release, as per the RTE APIs.
3. DPAA PMD (drivers/net/dpaa)
The Poll Mode Driver for DPAA NIC Interfaces.
Patch Layout
============
01: Add DPAA SoC build configuration
02~16: Add DPAA Bus support and features, incrementally
17: Add Documentation
18~21: Add DPAA Mempool support
22~41: Add PMD and its various features, incrementally
It is a very long series introducing 3 different subsystems.
I think everybody was scared about reviewing it.
Why you did not split it?
