[dpdk-dev] [PATCH v4 0/3] Introduce Intel FPGA BUS

[Rosen Xu]

Intel FPGA BUS in DPDK
-------------------------

This patch set introduces Intel FPGA BUS support in DPDK.

v4 updates:
===========
 - Remove all modifications from eal
 - Create vdev to take IFPGA parameters configuration
 - AFU Device Driver bind to AFU Device by uuid
 - Take more test in scenario of Multi-FPGA System
 
v3 updates:
===========
 - Remove all modifications of bus scan and probe
 - FPGA BUS Scan is trigged by hotplug of Rawdev
 - Took Modifications of comments
 - Move AFU Device to IFPGA
 - FPGA BUS Scan depend on it¡¯s IFPGA Rawdev
 - Add Build Macros for FPGA BUS and IFPGA Rawdev

Questions
=========
Why not PCI Bus?
All of the AFUs of one FPGA may share same PCI BDF.
Why not vdev Bus?
Because AFUs depend on Rawdev, and it's hardware specpic.

Motivation
==========
FPGA is used more and more widely in Cloud and NFV, one primary reason is
that FPGA not only provide ASIC performance but also it's more flexible 
than ASIC. FPGA use Partial Reconfigure(PR) Parts of Bitstream to achieve 
its flexibility. Another reason is that one FPGA can be shared 
by different Users, and each User can use some of AFUs of One FPGA.

That means One FPGA Device Bitstream is divided into many Parts of 
Bitstream(each Part of Bitstream is defined as AFU-Accelerated 
Function Unit), and each AFU is a Hardware Acceleration Unit and 
it can dynamically Reload respectively.

Proposed Solution
=================
 - Involve Rawdev to take FPGA Partial Configuration(Download/PR)
 - Defined FPGA-BUS for Acceleration Drivers of AFUs
   - FPGA PCI Scan(1st Scan) follows DPDK UIO/VFIO PCI Scan Process, 
     probe Intel FPGA Rawdev Driver. FPGA-BUS scan is called, but AFU
     depend on Rawdev, so this scan doesn't trig AFU device create.
   - AFU Scan(2nd Scan) bind DPDK Driver to FPGA Partial-Bitstream.
     This scan is trigged by hotplug of IFPGA Rawdev probe, in this
     scan the AFUs will be created and their dirves are also probed.

Scope
=====
The Intel FPGA BUS implementation is target towards various FPGA Devices 
use PR to provide many Acceleration Function. Specific PMDs may also 
bind to its AFU. And Applications don't care they are using ASIC 
Acceleration or FPGA AFU Acceleration.


Status
=====
With integrating Intel PSG FPGA Software Stack OPAE(Open Programmable 
Acceleration Engine) Share Code, Intel FPGA BUS runs well in 
Intel PSG FPGA Cards.

Rosen Xu (3):
  Add Intel FPGA BUS Lib Code
  Add Intel FPGA BUS Rawdev Driver
  Add Intel FPGA OPAE Share Code

 config/common_base                                 |    6 +
 drivers/bus/Makefile                               |    1 +
 drivers/bus/ifpga/Makefile                         |   33 +
 drivers/bus/ifpga/ifpga_bus.c                      |  517 ++++++
 drivers/bus/ifpga/ifpga_common.c                   |  141 ++
 drivers/bus/ifpga/ifpga_common.h                   |   22 +
 drivers/bus/ifpga/ifpga_logs.h                     |   31 +
 drivers/bus/ifpga/rte_bus_ifpga.h                  |  175 ++
 drivers/bus/ifpga/rte_bus_ifpga_version.map        |    8 +
 drivers/raw/Makefile                               |    1 +
 drivers/raw/ifpga_rawdev/Makefile                  |   34 +
 drivers/raw/ifpga_rawdev/base/Makefile             |   54 +
 drivers/raw/ifpga_rawdev/base/ifpga_api.c          |  529 ++++++
 drivers/raw/ifpga_rawdev/base/ifpga_api.h          |   73 +
 drivers/raw/ifpga_rawdev/base/ifpga_compat.h       |   84 +
 drivers/raw/ifpga_rawdev/base/ifpga_defines.h      | 1688 ++++++++++++++++++++
 drivers/raw/ifpga_rawdev/base/ifpga_enumerate.c    |  851 ++++++++++
 drivers/raw/ifpga_rawdev/base/ifpga_enumerate.h    |   38 +
 drivers/raw/ifpga_rawdev/base/ifpga_feature_dev.c  |  341 ++++
 drivers/raw/ifpga_rawdev/base/ifpga_feature_dev.h  |  191 +++
 drivers/raw/ifpga_rawdev/base/ifpga_fme.c          |  761 +++++++++
 drivers/raw/ifpga_rawdev/base/ifpga_fme_dperf.c    |  328 ++++
 drivers/raw/ifpga_rawdev/base/ifpga_fme_error.c    |  430 +++++
 drivers/raw/ifpga_rawdev/base/ifpga_fme_iperf.c    |  742 +++++++++
 drivers/raw/ifpga_rawdev/base/ifpga_fme_pr.c       |  399 +++++
 drivers/raw/ifpga_rawdev/base/ifpga_hw.h           |  154 ++
 drivers/raw/ifpga_rawdev/base/ifpga_port.c         |  435 +++++
 drivers/raw/ifpga_rawdev/base/ifpga_port_error.c   |  192 +++
 drivers/raw/ifpga_rawdev/base/opae_debug.c         |  126 ++
 drivers/raw/ifpga_rawdev/base/opae_debug.h         |   46 +
 drivers/raw/ifpga_rawdev/base/opae_hw_api.c        |  408 +++++
 drivers/raw/ifpga_rawdev/base/opae_hw_api.h        |  280 ++++
 drivers/raw/ifpga_rawdev/base/opae_ifpga_hw_api.c  |  172 ++
 drivers/raw/ifpga_rawdev/base/opae_ifpga_hw_api.h  |  306 ++++
 drivers/raw/ifpga_rawdev/base/opae_osdep.h         |  115 ++
 .../ifpga_rawdev/base/osdep_raw/osdep_generic.h    |  104 ++
 .../ifpga_rawdev/base/osdep_rte/osdep_generic.h    |   72 +
 drivers/raw/ifpga_rawdev/ifpga_rawdev.c            |  594 +++++++
 drivers/raw/ifpga_rawdev/ifpga_rawdev.h            |   37 +
 .../raw/ifpga_rawdev/rte_ifpga_rawdev_version.map  |    4 +
 mk/rte.app.mk                                      |    3 +
 41 files changed, 10526 insertions(+)
 create mode 100644 drivers/bus/ifpga/Makefile
 create mode 100644 drivers/bus/ifpga/ifpga_bus.c
 create mode 100644 drivers/bus/ifpga/ifpga_common.c
 create mode 100644 drivers/bus/ifpga/ifpga_common.h
 create mode 100644 drivers/bus/ifpga/ifpga_logs.h
 create mode 100644 drivers/bus/ifpga/rte_bus_ifpga.h
 create mode 100644 drivers/bus/ifpga/rte_bus_ifpga_version.map
 create mode 100644 drivers/raw/ifpga_rawdev/Makefile
 create mode 100644 drivers/raw/ifpga_rawdev/base/Makefile
 create mode 100644 drivers/raw/ifpga_rawdev/base/ifpga_api.c
 create mode 100644 drivers/raw/ifpga_rawdev/base/ifpga_api.h
 create mode 100644 drivers/raw/ifpga_rawdev/base/ifpga_compat.h
 create mode 100644 drivers/raw/ifpga_rawdev/base/ifpga_defines.h
 create mode 100644 drivers/raw/ifpga_rawdev/base/ifpga_enumerate.c
 create mode 100644 drivers/raw/ifpga_rawdev/base/ifpga_enumerate.h
 create mode 100644 drivers/raw/ifpga_rawdev/base/ifpga_feature_dev.c
 create mode 100644 drivers/raw/ifpga_rawdev/base/ifpga_feature_dev.h
 create mode 100644 drivers/raw/ifpga_rawdev/base/ifpga_fme.c
 create mode 100644 drivers/raw/ifpga_rawdev/base/ifpga_fme_dperf.c
 create mode 100644 drivers/raw/ifpga_rawdev/base/ifpga_fme_error.c
 create mode 100644 drivers/raw/ifpga_rawdev/base/ifpga_fme_iperf.c
 create mode 100644 drivers/raw/ifpga_rawdev/base/ifpga_fme_pr.c
 create mode 100644 drivers/raw/ifpga_rawdev/base/ifpga_hw.h
 create mode 100644 drivers/raw/ifpga_rawdev/base/ifpga_port.c
 create mode 100644 drivers/raw/ifpga_rawdev/base/ifpga_port_error.c
 create mode 100644 drivers/raw/ifpga_rawdev/base/opae_debug.c
 create mode 100644 drivers/raw/ifpga_rawdev/base/opae_debug.h
 create mode 100644 drivers/raw/ifpga_rawdev/base/opae_hw_api.c
 create mode 100644 drivers/raw/ifpga_rawdev/base/opae_hw_api.h
 create mode 100644 drivers/raw/ifpga_rawdev/base/opae_ifpga_hw_api.c
 create mode 100644 drivers/raw/ifpga_rawdev/base/opae_ifpga_hw_api.h
 create mode 100644 drivers/raw/ifpga_rawdev/base/opae_osdep.h
 create mode 100644 drivers/raw/ifpga_rawdev/base/osdep_raw/osdep_generic.h
 create mode 100644 drivers/raw/ifpga_rawdev/base/osdep_rte/osdep_generic.h
 create mode 100644 drivers/raw/ifpga_rawdev/ifpga_rawdev.c
 create mode 100644 drivers/raw/ifpga_rawdev/ifpga_rawdev.h
 create mode 100644 drivers/raw/ifpga_rawdev/rte_ifpga_rawdev_version.map

-- 
1.8.3.1