doc: update qede guide

- Add note for sharing an adapter between DPDK and Linux drivers.
- Update the firmware version in example.
- Add Config note for potential error due to lack of memzone descriptor
  count.

Signed-off-by: Rasesh Mody <rmody@marvell.com>

diff --git a/doc/guides/nics/qede.rst b/doc/guides/nics/qede.rst
index 2f40457..5b2f868 100644 (file)
--- a/doc/guides/nics/qede.rst
+++ b/doc/guides/nics/qede.rst
@@ -70,6 +70,12 @@ Co-existence considerations
   to the PFs of a given adapter and either qede PMD or Linux drivers
   (qed and qede) can be bound to the VFs of the adapter.
 
   to the PFs of a given adapter and either qede PMD or Linux drivers
   (qed and qede) can be bound to the VFs of the adapter.
 

+- For sharing an adapter between DPDK and Linux drivers, SRIOV needs
+  to be enabled. Bind all the PFs to Linux Drivers(qed/qede). Create
+  a VF on PFs where DPDK is desired and bind these VFs to qede_pmd.
+  Binding of PFs simultaneously to DPDK and Linux drivers on a given
+  adapter is not supported.
+

 Supported QLogic Adapters
 -------------------------
 
 Supported QLogic Adapters
 -------------------------
 


@@ -82,9 +88,7 @@ Prerequisites
   inbox in certain newer Linux distros under the standard directory
   ``E.g. /lib/firmware/qed/qed_init_values-8.40.33.0.bin``.
   If the required firmware files are not available then download it from
   inbox in certain newer Linux distros under the standard directory
   ``E.g. /lib/firmware/qed/qed_init_values-8.40.33.0.bin``.
   If the required firmware files are not available then download it from

-  `linux-firmware git repository <http://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/tree/qed>`_
-  or `QLogic Driver Download Center <http://driverdownloads.qlogic.com/QLogicDriverDownloads_UI/DefaultNewSearch.aspx>`_.
-  To download firmware file from QLogic website, select adapter category, model and DPDK Poll Mode Driver.
+  `linux-firmware git repository <http://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/tree/qed>`_.

 
 - Requires the NIC be updated minimally with **8.30.x.x** Management firmware(MFW) version supported for that NIC.
   It is highly recommended that the NIC be updated with the latest available management firmware version to get latest feature  set.
 
 - Requires the NIC be updated minimally with **8.30.x.x** Management firmware(MFW) version supported for that NIC.
   It is highly recommended that the NIC be updated with the latest available management firmware version to get latest feature  set.


@@ -99,7 +103,6 @@ Prerequisites
   `QLogic Driver Download Center <http://driverdownloads.qlogic.com/QLogicDriverDownloads_UI/DefaultNewSearch.aspx>`_.
   For downloading PF driver, select adapter category, model and Linux distro.
 
   `QLogic Driver Download Center <http://driverdownloads.qlogic.com/QLogicDriverDownloads_UI/DefaultNewSearch.aspx>`_.
   For downloading PF driver, select adapter category, model and Linux distro.
 

-

 Performance note
 ~~~~~~~~~~~~~~~~
 
 Performance note
 ~~~~~~~~~~~~~~~~
 


@@ -126,12 +129,26 @@ enabling debugging options may affect system performance.
 - ``CONFIG_RTE_LIBRTE_QEDE_FW`` (default **""**)
 
   Gives absolute path of firmware file.
 - ``CONFIG_RTE_LIBRTE_QEDE_FW`` (default **""**)
 
   Gives absolute path of firmware file.

-  ``Eg: "/lib/firmware/qed/qed_init_values-8.37.7.0.bin"``
+  ``Eg: "/lib/firmware/qed/qed_init_values-8.40.33.0.bin"``

   Empty string indicates driver will pick up the firmware file
   from the default location /lib/firmware/qed.
   CAUTION this option is more for custom firmware, it is not
   recommended for use under normal condition.
 
   Empty string indicates driver will pick up the firmware file
   from the default location /lib/firmware/qed.
   CAUTION this option is more for custom firmware, it is not
   recommended for use under normal condition.
 

+Config notes
+~~~~~~~~~~~~
+
+When there are multiple adapters and/or large number of Rx/Tx queues
+configured on the adapters, the default (2560) number of memzone
+descriptors may not be enough. Please increase the number of memzone
+descriptors to a higher number as needed. When sufficient number of
+memzone descriptors are not configured, user can potentially run into
+following error.
+
+   .. code-block:: console
+
+      EAL: memzone_reserve_aligned_thread_unsafe(): No more room in config
+

 Driver compilation and testing
 ------------------------------
 
 Driver compilation and testing
 ------------------------------