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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-21 11:54:28 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-21 11:54:28 +0000
commite6918187568dbd01842d8d1d2c808ce16a894239 (patch)
tree64f88b554b444a49f656b6c656111a145cbbaa28 /src/spdk/dpdk/doc/guides/mempool
parentInitial commit. (diff)
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Adding upstream version 18.2.2.upstream/18.2.2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/spdk/dpdk/doc/guides/mempool')
-rw-r--r--src/spdk/dpdk/doc/guides/mempool/index.rst15
-rw-r--r--src/spdk/dpdk/doc/guides/mempool/octeontx.rst74
-rw-r--r--src/spdk/dpdk/doc/guides/mempool/octeontx2.rst100
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diff --git a/src/spdk/dpdk/doc/guides/mempool/index.rst b/src/spdk/dpdk/doc/guides/mempool/index.rst
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@@ -0,0 +1,15 @@
+.. SPDX-License-Identifier: BSD-3-Clause
+ Copyright(c) 2017 Cavium, Inc
+
+Mempool Device Driver
+=====================
+
+The following are a list of mempool PMDs, which can be used from an
+application through the mempool API.
+
+.. toctree::
+ :maxdepth: 2
+ :numbered:
+
+ octeontx
+ octeontx2
diff --git a/src/spdk/dpdk/doc/guides/mempool/octeontx.rst b/src/spdk/dpdk/doc/guides/mempool/octeontx.rst
new file mode 100644
index 000000000..dfa1993e1
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+++ b/src/spdk/dpdk/doc/guides/mempool/octeontx.rst
@@ -0,0 +1,74 @@
+.. SPDX-License-Identifier: BSD-3-Clause
+ Copyright(c) 2017 Cavium, Inc
+
+OCTEON TX FPAVF Mempool Driver
+==============================
+
+The OCTEON TX FPAVF PMD (**librte_mempool_octeontx**) is a mempool
+driver for offload mempool device found in **Cavium OCTEON TX** SoC
+family.
+
+More information can be found at `Cavium, Inc Official Website
+<http://www.cavium.com/OCTEON-TX_ARM_Processors.html>`_.
+
+Features
+--------
+
+Features of the OCTEON TX FPAVF PMD are:
+
+- 32 SR-IOV Virtual functions
+- 32 Pools
+- HW mempool manager
+
+Supported OCTEON TX SoCs
+------------------------
+
+- CN83xx
+
+Prerequisites
+-------------
+
+See :doc: `../platform/octeontx.rst` for setup information.
+
+Pre-Installation Configuration
+------------------------------
+
+Config File Options
+~~~~~~~~~~~~~~~~~~~
+
+The following options can be modified in the ``config`` file.
+Please note that enabling debugging options may affect system performance.
+
+- ``CONFIG_RTE_MBUF_DEFAULT_MEMPOOL_OPS`` ( set to ``octeontx_fpavf``)
+
+ Set default mempool ops to octeontx_fpavf.
+
+- ``CONFIG_RTE_LIBRTE_OCTEONTX_MEMPOOL`` (default ``y``)
+
+ Toggle compilation of the ``librte_mempool_octeontx`` driver.
+
+Driver Compilation
+~~~~~~~~~~~~~~~~~~
+
+To compile the OCTEON TX FPAVF MEMPOOL PMD for Linux arm64 gcc target, run the
+following ``make`` command:
+
+.. code-block:: console
+
+ cd <DPDK-source-directory>
+ make config T=arm64-thunderx-linux-gcc
+
+
+Initialization
+--------------
+
+The OCTEON TX fpavf mempool initialization similar to other mempool
+drivers like ring. However user need to pass --base-virtaddr as
+command line input to application example test_mempool.c application.
+
+Example:
+
+.. code-block:: console
+
+ ./build/app/test -c 0xf --base-virtaddr=0x100000000000 \
+ --mbuf-pool-ops-name="octeontx_fpavf"
diff --git a/src/spdk/dpdk/doc/guides/mempool/octeontx2.rst b/src/spdk/dpdk/doc/guides/mempool/octeontx2.rst
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index 000000000..49b45a04e
--- /dev/null
+++ b/src/spdk/dpdk/doc/guides/mempool/octeontx2.rst
@@ -0,0 +1,100 @@
+.. 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.
+
+- ``Lock NPA contexts in NDC``
+
+ Lock NPA aura and pool contexts in NDC cache.
+ The device args take hexadecimal bitmask where each bit represent the
+ corresponding aura/pool id.
+
+ For example::
+
+ -w 0002:02:00.0,npa_lock_mask=0xf
+
+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"