ceph/src/spdk/dpdk/doc/guides/compressdevs/octeontx.rst

   1 ..  SPDX-License-Identifier: BSD-3-Clause
   2     Copyright(c) 2018 Cavium Networks.
   3
   4 Octeontx ZIP Compression Poll Mode Driver
   5 =========================================
   6
   7 The Octeontx ZIP PMD (**librte_pmd_octeontx_zip**) provides poll mode
   8 compression & decompression driver for ZIP HW offload device, found in
   9 **Cavium OCTEONTX** SoC family.
  10
  11 More information can be found at `Cavium, Inc Official Website
  12 <http://www.cavium.com/OCTEON-TX_ARM_Processors.html>`_.
  13
  14 Features
  15 --------
  16
  17 Octeontx ZIP PMD has support for:
  18
  19 Compression/Decompression algorithm:
  20
  21 * DEFLATE
  22
  23 Huffman code type:
  24
  25 * FIXED
  26 * DYNAMIC
  27
  28 Window size support:
  29
  30 * 2 to 2^14
  31
  32 Limitations
  33 -----------
  34
  35 * Chained mbufs are not supported.
  36
  37 Supported OCTEONTX SoCs
  38 -----------------------
  39
  40 - CN83xx
  41
  42 Steps To Setup Platform
  43 -----------------------
  44
  45    Octeontx SDK includes kernel image which provides Octeontx ZIP PF
  46    driver to manage configuration of ZIPVF device
  47    Required version of SDK is "OCTEONTX-SDK-6.2.0-build35" or above.
  48
  49    SDK can be install by using below command.
  50    #rpm -ivh CTEONTX-SDK-6.2.0-build35.x86_64.rpm --force --nodeps
  51    It will install OCTEONTX-SDK at following default location
  52    /usr/local/Cavium_Networks/OCTEONTX-SDK/
  53
  54    For more information on building and booting linux kernel on OCTEONTX
  55    please refer /usr/local/Cavium_Networks/OCTEONTX-SDK/docs/OcteonTX-SDK-UG_6.2.0.pdf.
  56
  57    SDK and related information can be obtained from: `Cavium support site <https://support.cavium.com/>`_.
  58
  59 Installation
  60 ------------
  61
  62 Driver Compilation
  63 ~~~~~~~~~~~~~~~~~~
  64
  65 To compile the OCTEONTX ZIP PMD for Linux arm64 gcc target, run the
  66 following ``make`` command:
  67
  68    .. code-block:: console
  69
  70       cd <DPDK-source-directory>
  71       make config T=arm64-thunderx-linuxapp-gcc install
  72
  73
  74 Initialization
  75 --------------
  76
  77 The octeontx zip is exposed as pci device which consists of a set of
  78 PCIe VF devices. On EAL initialization, ZIP PCIe VF devices will be
  79 probed. To use the PMD in an application, user must:
  80
  81 * run dev_bind script to bind eight ZIP PCIe VFs to the ``vfio-pci`` driver:
  82
  83    .. code-block:: console
  84
  85       ./usertools/dpdk-devbind.py -b vfio-pci 0001:04:00.1
  86       ./usertools/dpdk-devbind.py -b vfio-pci 0001:04:00.2
  87       ./usertools/dpdk-devbind.py -b vfio-pci 0001:04:00.3
  88       ./usertools/dpdk-devbind.py -b vfio-pci 0001:04:00.4
  89       ./usertools/dpdk-devbind.py -b vfio-pci 0001:04:00.5
  90       ./usertools/dpdk-devbind.py -b vfio-pci 0001:04:00.6
  91       ./usertools/dpdk-devbind.py -b vfio-pci 0001:04:00.7
  92       ./usertools/dpdk-devbind.py -b vfio-pci 0001:04:01.0
  93
  94 * The unit test cases can be tested as below:
  95
  96    .. code-block:: console
  97
  98       reserve enough huge pages
  99       cd to the top-level DPDK directory
 100       export RTE_TARGET=arm64-thunderx-linuxapp-gcc
 101       export RTE_SDK=`pwd`
 102       cd to test/test
 103       type the command "make" to compile
 104       run the tests with "./test"
 105       type the command "compressdev_autotest" to test