X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;ds=sidebyside;f=doc%2Fguides%2Frawdevs%2Focteontx2_dma.rst;h=1e1dfbe931aadf28f11846217bfcd7f11f6982fb;hb=58b4a2b13ec0d28a3ffa70d79dff21e9a16b7ae7;hp=5e926d10df698853adfcda0bacda402b334a6ad6;hpb=04b7dde74c3c72c08f2d9eef40da0f885a64da70;p=dpdk.git

diff --git a/doc/guides/rawdevs/octeontx2_dma.rst b/doc/guides/rawdevs/octeontx2_dma.rst
index 5e926d10df..1e1dfbe931 100644
--- a/doc/guides/rawdevs/octeontx2_dma.rst
+++ b/doc/guides/rawdevs/octeontx2_dma.rst
@@ -63,6 +63,17 @@ entry, `sriov_numvfs` for the corresponding PF driver.
 Once the required VFs are enabled, to be accessible from DPDK, VFs need to be
 bound to vfio-pci driver.
 
+Device Setup
+-------------
+
+The OCTEON TX2 DPI DMA HW devices will need to be bound to a
+user-space IO driver for use. The script ``dpdk-devbind.py`` script
+included with DPDK can be used to view the state of the devices and to bind
+them to a suitable DPDK-supported kernel driver. When querying the status
+of the devices, they will appear under the category of "Misc (rawdev)
+devices", i.e. the command ``dpdk-devbind.py --status-dev misc`` can be
+used to see the state of those devices alone.
+
 Device Configuration
 --------------------
 
@@ -82,3 +93,23 @@ The following code shows how the device is configured
    rte_mempool_populate_default(conf.chunk_pool);
 
    rte_rawdev_configure(dev_id, (rte_rawdev_obj_t)&rdev_info);
+
+Performing Data Transfer
+------------------------
+
+To perform data transfer using OCTEON TX2 DMA rawdev devices use standard
+``rte_rawdev_enqueue_buffers()`` and ``rte_rawdev_dequeue_buffers()`` APIs.
+
+Self test
+---------
+
+On EAL initialization, dma devices will be probed and populated into the
+raw devices. The rawdev ID of the device can be obtained using
+
+* Invoke ``rte_rawdev_get_dev_id("DPI:x")`` from the application
+  where x is the VF device's bus id specified in "bus:device.func" format. Use this
+  index for further rawdev function calls.
+
+* This PMD supports driver self test, to test DMA internal mode from test
+  application one can directly calls
+  ``rte_rawdev_selftest(rte_rawdev_get_dev_id("DPI:x"))``