netdev - [net-next-2.6 PATCH 3/8] ixgbe: Add FCoE feature code to 82599

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Message-ID: <20090513231021.11416.9456.stgit@localhost.localdomain>
Date:	Wed, 13 May 2009 16:10:21 -0700
From:	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To:	davem@...emloft.net
Cc:	netdev@...r.kernel.org, linux-scsi@...r.kernel.org,
	Yi Zou <yi.zou@...el.com>,
	Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@...el.com>,
	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net-next-2.6 PATCH 3/8] ixgbe: Add FCoE feature code to 82599

From: Yi Zou <yi.zou@...el.com>

This adds the FCoE feature code ixgbe_fcoe.c to 82599. For a start, this patch
only adds ixgbe_configure_fcoe() to configure related register for FCoE to 82599.
In patches that follow, I will be adding more functions to ixgbe_fcoe.c to add
support of FCoE offload features to 82599.

Signed-off-by: Yi Zou <yi.zou@...el.com>
Acked-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---

 drivers/net/ixgbe/ixgbe_fcoe.c |   60 ++++++++++++++++++++++++++++++++++++++++
 1 files changed, 60 insertions(+), 0 deletions(-)
 create mode 100644 drivers/net/ixgbe/ixgbe_fcoe.c

diff --git a/drivers/net/ixgbe/ixgbe_fcoe.c b/drivers/net/ixgbe/ixgbe_fcoe.c
new file mode 100644
index 0000000..f8c4d35
--- /dev/null
+++ b/drivers/net/ixgbe/ixgbe_fcoe.c
@@ -0,0 +1,60 @@
+/*******************************************************************************
+
+  Intel 10 Gigabit PCI Express Linux driver
+  Copyright(c) 1999 - 2009 Intel Corporation.
+
+  This program is free software; you can redistribute it and/or modify it
+  under the terms and conditions of the GNU General Public License,
+  version 2, as published by the Free Software Foundation.
+
+  This program is distributed in the hope it will be useful, but WITHOUT
+  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+  more details.
+
+  You should have received a copy of the GNU General Public License along with
+  this program; if not, write to the Free Software Foundation, Inc.,
+  51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+
+  The full GNU General Public License is included in this distribution in
+  the file called "COPYING".
+
+  Contact Information:
+  e1000-devel Mailing List <e1000-devel@...ts.sourceforge.net>
+  Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+
+*******************************************************************************/
+
+
+#include "ixgbe.h"
+#include <linux/if_ether.h>
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_device.h>
+#include <scsi/fc/fc_fs.h>
+#include <scsi/fc/fc_fcoe.h>
+#include <scsi/libfc.h>
+#include <scsi/libfcoe.h>
+
+/**
+ * ixgbe_configure_fcoe - configures registers for fcoe at start
+ * @adapter: ptr to ixgbe adapter
+ *
+ * This sets up FCoE related registers
+ *
+ * Returns : none
+ */
+void ixgbe_configure_fcoe(struct ixgbe_adapter *adapter)
+{
+	struct ixgbe_hw *hw = &adapter->hw;
+
+	/* L2 filter for FCoE: default to queue 0 */
+	IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_FCOE),
+			(ETH_P_FCOE | IXGBE_ETQF_FCOE | IXGBE_ETQF_FILTER_EN));
+	IXGBE_WRITE_REG(hw, IXGBE_FCRECTL, 0);
+	IXGBE_WRITE_REG(hw, IXGBE_ETQS(IXGBE_ETQF_FILTER_FCOE),
+			IXGBE_ETQS_QUEUE_EN);
+	IXGBE_WRITE_REG(hw, IXGBE_FCRXCTRL,
+			IXGBE_FCRXCTRL_FCOELLI |
+			IXGBE_FCRXCTRL_FCCRCBO |
+			(FC_FCOE_VER << IXGBE_FCRXCTRL_FCOEVER_SHIFT));
+}

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