[dpdk-dev] [PATCH v2 27/27] doc: add Marvell OCTEON TX2 mempool documentation

jerinj at marvell.com jerinj at marvell.com
Sat Jun 1 03:49:05 CEST 2019


From: Jerin Jacob <jerinj at marvell.com>

Add Marvell OCTEON TX2 mempool documentation.

This patch also updates the MAINTAINERS file and
updates shared library versions in release_19_08.rst.

Cc: John McNamara <john.mcnamara at intel.com>
Cc: Thomas Monjalon <thomas at monjalon.net>

Signed-off-by: Jerin Jacob <jerinj at marvell.com>
Signed-off-by: Vivek Sharma <viveksharma at marvell.com>
Signed-off-by: Vamsi Attunuru <vattunuru at marvell.com>
Signed-off-by: Nithin Dabilpuram <ndabilpuram at marvell.com>
---
 MAINTAINERS                            | 10 +++
 doc/guides/mempool/index.rst           |  1 +
 doc/guides/mempool/octeontx2.rst       | 90 ++++++++++++++++++++++++++
 doc/guides/platform/octeontx2.rst      |  2 +
 doc/guides/rel_notes/release_19_08.rst |  2 +
 5 files changed, 105 insertions(+)
 create mode 100644 doc/guides/mempool/octeontx2.rst

diff --git a/MAINTAINERS b/MAINTAINERS
index 15d0829c5..74ac6d41f 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -444,6 +444,16 @@ M: Artem V. Andreev <artem.andreev at oktetlabs.ru>
 M: Andrew Rybchenko <arybchenko at solarflare.com>
 F: drivers/mempool/bucket/
 
+Marvell OCTEON TX2
+M: Jerin Jacob <jerinj at marvell.com>
+M: Nithin Dabilpuram <ndabilpuram at marvell.com>
+M: Vamsi Attunuru <vattunuru at marvell.com>
+F: drivers/common/octeontx2/
+F: drivers/mempool/octeontx2/
+F: doc/guides/platform/img/octeontx2_*
+F: doc/guides/platform/octeontx2.rst
+F: doc/guides/mempool/octeontx2.rst
+
 
 Bus Drivers
 -----------
diff --git a/doc/guides/mempool/index.rst b/doc/guides/mempool/index.rst
index 2ccf91633..756610264 100644
--- a/doc/guides/mempool/index.rst
+++ b/doc/guides/mempool/index.rst
@@ -12,3 +12,4 @@ application through the mempool API.
     :numbered:
 
     octeontx
+    octeontx2
diff --git a/doc/guides/mempool/octeontx2.rst b/doc/guides/mempool/octeontx2.rst
new file mode 100644
index 000000000..2c9a0953b
--- /dev/null
+++ b/doc/guides/mempool/octeontx2.rst
@@ -0,0 +1,90 @@
+..  SPDX-License-Identifier: BSD-3-Clause
+    Copyright(c) 2019 Marvell International Ltd.
+
+OCTEON TX2 NPA Mempool Driver
+=============================
+
+The OCTEON TX2 NPA PMD (**librte_mempool_octeontx2**) provides mempool
+driver support for the integrated mempool device found in **Marvell OCTEON TX2** SoC family.
+
+More information about OCTEON TX2 SoC can be found at `Marvell Official Website
+<https://www.marvell.com/embedded-processors/infrastructure-processors/>`_.
+
+Features
+--------
+
+OCTEON TX2 NPA PMD supports:
+
+- Up to 128 NPA LFs
+- 1M Pools per LF
+- HW mempool manager
+- Ethdev Rx buffer allocation in HW to save CPU cycles in the Rx path.
+- Ethdev Tx buffer recycling in HW to save CPU cycles in the Tx path.
+
+Prerequisites and Compilation procedure
+---------------------------------------
+
+   See :doc:`../platform/octeontx2` for setup information.
+
+Pre-Installation Configuration
+------------------------------
+
+Compile time Config Options
+~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+The following option can be modified in the ``config`` file.
+
+- ``CONFIG_RTE_LIBRTE_OCTEONTX2_MEMPOOL`` (default ``y``)
+
+  Toggle compilation of the ``librte_mempool_octeontx2`` driver.
+
+Runtime Config Options
+~~~~~~~~~~~~~~~~~~~~~~
+
+- ``Maximum number of mempools per application`` (default ``128``)
+
+  The maximum number of mempools per application needs to be configured on
+  HW during mempool driver initialization. HW can support up to 1M mempools,
+  Since each mempool costs set of HW resources, the ``max_pools`` ``devargs``
+  parameter is being introduced to configure the number of mempools required
+  for the application.
+  For example::
+
+    -w 0002:02:00.0,max_pools=512
+
+  With the above configuration, the driver will set up only 512 mempools for
+  the given application to save HW resources.
+
+.. note::
+
+   Since this configuration is per application, the end user needs to
+   provide ``max_pools`` parameter to the first PCIe device probed by the given
+   application.
+
+Debugging Options
+~~~~~~~~~~~~~~~~~
+
+.. _table_octeontx2_mempool_debug_options:
+
+.. table:: OCTEON TX2 mempool debug options
+
+   +---+------------+-------------------------------------------------------+
+   | # | Component  | EAL log command                                       |
+   +===+============+=======================================================+
+   | 1 | NPA        | --log-level='pmd\.mempool.octeontx2,8'                |
+   +---+------------+-------------------------------------------------------+
+
+Standalone mempool device
+~~~~~~~~~~~~~~~~~~~~~~~~~
+
+   The ``usertools/dpdk-devbind.py`` script shall enumerate all the mempool devices
+   available in the system. In order to avoid, the end user to bind the mempool
+   device prior to use ethdev and/or eventdev device, the respective driver
+   configures an NPA LF and attach to the first probed ethdev or eventdev device.
+   In case, if end user need to run mempool as a standalone device
+   (without ethdev or eventdev), end user needs to bind a mempool device using
+   ``usertools/dpdk-devbind.py``
+
+   Example command to run ``mempool_autotest`` test with standalone OCTEONTX2 NPA device::
+
+     echo "mempool_autotest" | build/app/test -c 0xf0 --mbuf-pool-ops-name="octeontx2_npa"
diff --git a/doc/guides/platform/octeontx2.rst b/doc/guides/platform/octeontx2.rst
index 3a5e03050..c9ea45647 100644
--- a/doc/guides/platform/octeontx2.rst
+++ b/doc/guides/platform/octeontx2.rst
@@ -98,6 +98,8 @@ HW Offload Drivers
 
 This section lists dataplane H/W block(s) available in OCTEON TX2 SoC.
 
+#. **Mempool Driver**
+   See :doc:`../mempool/octeontx2` for NPA mempool driver information.
 
 Procedure to Setup Platform
 ---------------------------
diff --git a/doc/guides/rel_notes/release_19_08.rst b/doc/guides/rel_notes/release_19_08.rst
index a17e7dea5..c8b22ff25 100644
--- a/doc/guides/rel_notes/release_19_08.rst
+++ b/doc/guides/rel_notes/release_19_08.rst
@@ -135,6 +135,7 @@ The libraries prepended with a plus sign were incremented in this version.
      librte_cfgfile.so.2
      librte_cmdline.so.2
      librte_compressdev.so.1
+   + librte_common_octeontx2.so.1
      librte_cryptodev.so.7
      librte_distributor.so.1
      librte_eal.so.10
@@ -155,6 +156,7 @@ The libraries prepended with a plus sign were incremented in this version.
      librte_mbuf.so.5
      librte_member.so.1
      librte_mempool.so.5
+   + librte_mempool_octeontx2.so.1
      librte_meter.so.3
      librte_metrics.so.1
      librte_net.so.1
-- 
2.21.0



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