doc: add guide for AMD axgbe Ethernet PMD

Signed-off-by: Ravi Kumar <ravi1.kumar@amd.com>

doc/guides/nics/axgbe.rst

@@ -0,0 +1,86 @@
+..  SPDX-License-Identifier: BSD-3-Clause
+    Copyright (c) 2018 Advanced Micro Devices, Inc. All rights reserved.
+
+AXGBE Poll Mode Driver
+======================
+
+The AXGBE poll mode driver library (**librte_pmd_axgbe**) implements support
+for AMD 10 Gbps family of adapters. It is compiled and tested in standard linux distro like Ubuntu.
+
+Detailed information about SoCs that use these devices can be found here:
+
+- `AMD EPYC™ EMBEDDED 3000 family <https://www.amd.com/en/products/embedded-epyc-3000-series>`_.
+
+
+Supported Features
+------------------
+
+AXGBE PMD has support for:
+
+- Base L2 features
+- TSS (Transmit Side Scaling)
+- RSS (Receive Side Scaling)
+- Checksum offload
+- Jumbo Frame upto 9K
+
+
+Configuration Information
+-------------------------
+
+The following options can be modified in the ``.config`` file. Please note that
+enabling debugging options may affect system performance.
+
+- ``CONFIG_RTE_LIBRTE_AXGBE_PMD`` (default **y**)
+
+  Toggle compilation of axgbe PMD.
+
+- ``CONFIG_RTE_LIBRTE_AXGBE_PMD_DEBUG`` (default **n**)
+
+  Toggle display for PMD debug related messages.
+
+
+Building DPDK
+-------------
+
+See the :ref:`DPDK Getting Started Guide for Linux <linux_gsg>` for
+instructions on how to build DPDK.
+
+By default the AXGBE PMD library will be built into the DPDK library.
+
+For configuring and using UIO frameworks, please also refer :ref:`the
+documentation that comes with DPDK suite <linux_gsg>`.
+
+
+Prerequisites and Pre-conditions
+--------------------------------
+- Prepare the system as recommended by DPDK suite.
+
+- Bind the intended AMD device to ``igb_uio`` or ``vfio-pci`` module.
+
+Now system is ready to run DPDK application.
+
+
+Usage Example
+-------------
+
+Refer to the document :ref:`compiling and testing a PMD for a NIC <pmd_build_and_test>`
+for details.
+
+Example output:
+
+.. code-block:: console
+
+   [...]
+   EAL: PCI device 0000:02:00.4 on NUMA socket 0
+   EAL:   probe driver: 1022:1458 net_axgbe
+   Interactive-mode selected
+   USER1: create a new mbuf pool <mbuf_pool_socket_0>: n=171456, size=2176, socket=0
+   USER1: create a new mbuf pool <mbuf_pool_socket_1>: n=171456, size=2176, socket=1
+   USER1: create a new mbuf pool <mbuf_pool_socket_2>: n=171456, size=2176, socket=2
+   USER1: create a new mbuf pool <mbuf_pool_socket_3>: n=171456, size=2176, socket=3
+   Configuring Port 0 (socket 0)
+   Port 0: 00:00:1A:1C:6A:17
+   Checking link statuses...
+   Port 0 Link Up - speed 10000 Mbps - full-duplex
+   Done
+   testpmd>

doc/guides/nics/features/axgbe.ini

@@ -0,0 +1,14 @@
+;
+; Supported features of the 'axgbe' network poll mode driver.
+;
+; Refer to default.ini for the full list of available PMD features.
+;
+[Features]
+Speed capabilities   = Y
+Jumbo frame          = Y
+RSS hash             = Y
+CRC offload          = Y
+L3 checksum offload  = Y
+L4 checksum offload  = Y
+Linux UIO            = Y
+x86-64               = Y

doc/guides/nics/index.rst

@@ -13,6 +13,7 @@ Network Interface Controller Drivers
     build_and_test
     ark
     avp
+    axgbe
     bnx2x
     bnxt
     cxgbe