[Qemu-devel] [PATCH v2 0/8] Stream - Multiple connections for the one device

[Peter Crosthwaite]

Hi all. The Xilinx AXIEnet and DMA devices have two AXI stream connections
(control and data), only one of which is currently modelled (data). AXI stream
is modelled using the stream QOM interface described in stream.h. Unfortunately,
interfaces have no nice way of modelling multiple connections of the same type.
So to overcome this I created a secondary object which acts as a proxy for the
stream connection. Multiple connections can be implemented using multiple
proxies and stream masters link to the relevant proxy, rather than the ethernet
device itself. This RFC is an example for how to do this for AXIEnet only. If
acceptable, this change pattern will also be applied to AXIDMA.

Patches 1-6 are cleanup of axienet as per the current QOM styling guidelines and
can be cherry-picked off the front. Patch 7 is the proxy patch. Patch 8 is an
example stub for how a secondary connection can be created.

changed from v1:
Removed former P1&2 (already merged)
Address Andreas review
Refactor axienet to be more QOM friendly.


Peter Crosthwaite (8):
  xilinx_axienet: typedef XilinxAXIEnet struct
  xilinx_axienet: Defined and use type cast macro
  xilinx_axienet: Register reset properly
  xilinx_axienet: converted init->realize
  petalogix_ml605_mmu: Fix machine node attachment
  petalogix_ml605_mmu: Attach ethernet to machine
  xilinx_axienet: Create Proxy object for stream
  xilinx_axienet: stub out second stream connection

 hw/petalogix_ml605_mmu.c |   12 +++-
 hw/xilinx_axienet.c      |  170 +++++++++++++++++++++++++++++++++++----------
 2 files changed, 141 insertions(+), 41 deletions(-)