From patchwork Fri Feb 12 16:39:17 2016
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
X-Patchwork-Submitter: "Guo, Jia" <jia.guo@intel.com>
X-Patchwork-Id: 19115
Return-Path: <dev-bounces@dpdk.org>
X-Original-To: patchwork@dpdk.org
Delivered-To: patchwork@dpdk.org
Received: from [92.243.14.124] (localhost [IPv6:::1])
	by dpdk.org (Postfix) with ESMTP id EAD6AD59A;
	Wed, 11 Jan 2017 08:49:01 +0100 (CET)
Received: from mga04.intel.com (mga04.intel.com [192.55.52.120])
	by dpdk.org (Postfix) with ESMTP id 79D2D69FC
	for <dev@dpdk.org>; Wed, 11 Jan 2017 08:48:59 +0100 (CET)
Received: from fmsmga005.fm.intel.com ([10.253.24.32])
	by fmsmga104.fm.intel.com with ESMTP; 10 Jan 2017 23:48:57 -0800
X-ExtLoop1: 1
X-IronPort-AV: E=Sophos;i="5.33,345,1477983600"; d="scan'208";a="51918501"
Received: from jeffguo-s2600wt2.sh.intel.com ([10.239.129.150])
	by fmsmga005.fm.intel.com with ESMTP; 10 Jan 2017 23:48:54 -0800
From: Jeff Guo <jia.guo@intel.com>
To: helin.zhang@intel.com,
	jingjing.wu@intel.com
Cc: dev@dpdk.org, jia.guo@intel.com, Guo@dpdk.org
Date: Sat, 13 Feb 2016 00:39:17 +0800
Message-Id: <1455295157-16299-1-git-send-email-jia.guo@intel.com>
X-Mailer: git-send-email 2.7.4
In-Reply-To: <1482460523-74460-1-git-send-email-jia.guo@intel.com>
References: <1482460523-74460-1-git-send-email-jia.guo@intel.com>
Subject: [dpdk-dev] [PATCH v2] doc: add known uio_pci_generic issue for i40e
X-BeenThere: dev@dpdk.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: DPDK patches and discussions <dev.dpdk.org>
List-Unsubscribe: <http://dpdk.org/ml/options/dev>,
	<mailto:dev-request@dpdk.org?subject=unsubscribe>
List-Archive: <http://dpdk.org/ml/archives/dev/>
List-Post: <mailto:dev@dpdk.org>
List-Help: <mailto:dev-request@dpdk.org?subject=help>
List-Subscribe: <http://dpdk.org/ml/listinfo/dev>,
	<mailto:dev-request@dpdk.org?subject=subscribe>
Errors-To: dev-bounces@dpdk.org
Sender: "dev" <dev-bounces@dpdk.org>

From: "Guo, Jia" <jia.guo@intel.com>

When bind with uio_pci_generic in X710/XL710/XXV710, the result
is failed. uio_pci_generic is not supported by X710/XL710/XXV710.

Signed-off-by: Guo, Jia <jia.guo@intel.com>
---
v2: add X710/XXV710 limitation case
---
 doc/guides/rel_notes/known_issues.rst | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/doc/guides/rel_notes/known_issues.rst b/doc/guides/rel_notes/known_issues.rst
index 3cd4237..1751451 100644
--- a/doc/guides/rel_notes/known_issues.rst
+++ b/doc/guides/rel_notes/known_issues.rst
@@ -640,3 +640,27 @@ I40e VF may not receive packets in the promiscuous mode
 
 **Driver/Module**:
    Poll Mode Driver (PMD).
+
+
+uio_pci_generic bind failed in X710/XL710/XXV710
+-------------------------------------------------------
+
+**Description**:
+   uio_pci_generic is not supported by XL710, since the errata of XL710 that the feature
+   about the Interrupt Status bit is not implemented.The errata is the item #71 from the
+   `xl710 controller spec  <http://www.intel.com/content/www/us/en/embedded/products/networking/xl710-10-40-controller-spec-update.html>`_.
+   The hw limitation is the same as other X710/XXV710 NICs.
+
+**Implication**:
+   When bind uio_pci_generic, the uio_pci_generic probe device and check the Interrupt
+   Status bit related feature of NICs , since it is not supported by X710/XL710/XXV710,
+   so it return failed.
+
+**Resolution/Workaround**:
+   Do not bind to use uio_pci_generic in X710/XL710/XXV710 NICs.
+
+**Affected Environment/Platform**:
+   All.
+
+**Driver/Module**:
+   Poll Mode Driver (PMD).