From: Chad Dupuis <cdupuis@redhat.com>
Date: Tue, 3 Aug 2010 13:51:49 -0400
Subject: [net] netxen: fix register usage
Message-id: <20100803134905.2239.38490.sendpatchset@localhost.localdomain>
Patchwork-id: 27338
O-Subject: [RHEL 5.6 PATCH 36/44] netxen: fix register usage
Bugzilla: 562937
RH-Acked-by: David S. Miller <davem@redhat.com>
RH-Acked-by: Neil Horman <nhorman@redhat.com>

Bugzilla
========

562937

Upstream Status
===============

net-2.6 commit id f8e21f8fe2253e2ed5b9189b9dd5ff7e51af307c

Description
===========

>From b83ed5e14de4fa3fa48bdcb643339040d73dd796 Mon Sep 17 00:00:00 2001
From: Amit Kumar Salecha <amit.salecha@qlogic.com>
Date: Tue, 11 May 2010 23:53:02 +0000
Subject: [PATCH] netxen: fix register usage

o For NX3031, MSI_MODE, CAPABILITIES_FW and SCRATCHPAD registers
  are obsolete. These register addresses can be used for different
  purpose.

Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/netxen/netxen_nic_ethtool.c b/drivers/net/netxen/netxen_nic_ethtool.c
index a41ed24..a89ac16 100644
--- a/drivers/net/netxen/netxen_nic_ethtool.c
+++ b/drivers/net/netxen/netxen_nic_ethtool.c
@@ -634,6 +634,9 @@ static int netxen_nic_reg_test(struct net_device *dev)
 	if ((data_read & 0xffff) != adapter->pdev->vendor)
 		return 1;
 
+	if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
+		return 0;
+
 	data_written = (u32)0xa5a5a5a5;
 
 	NXWR32(adapter, CRB_SCRATCHPAD_TEST, data_written);
diff --git a/drivers/net/netxen/netxen_nic_hdr.h b/drivers/net/netxen/netxen_nic_hdr.h
index 622e4c8..d930068 100644
--- a/drivers/net/netxen/netxen_nic_hdr.h
+++ b/drivers/net/netxen/netxen_nic_hdr.h
@@ -789,9 +789,7 @@ enum {
  * for backward compability
  */
 #define CRB_NIC_CAPABILITIES_HOST	NETXEN_NIC_REG(0x1a8)
-#define CRB_NIC_CAPABILITIES_FW	  	NETXEN_NIC_REG(0x1dc)
 #define CRB_NIC_MSI_MODE_HOST		NETXEN_NIC_REG(0x270)
-#define CRB_NIC_MSI_MODE_FW	  	NETXEN_NIC_REG(0x274)
 
 #define INTR_SCHEME_PERPORT	      	0x1
 #define MSI_MODE_MULTIFUNC	      	0x1
diff --git a/drivers/net/netxen/netxen_nic_init.c b/drivers/net/netxen/netxen_nic_init.c
index 7fe7ec6..f377196 100644
--- a/drivers/net/netxen/netxen_nic_init.c
+++ b/drivers/net/netxen/netxen_nic_init.c
@@ -1360,10 +1360,12 @@ int netxen_init_firmware(struct netxen_adapter *adapter)
 		return err;
 
 	NXWR32(adapter, CRB_NIC_CAPABILITIES_HOST, INTR_SCHEME_PERPORT);
-	NXWR32(adapter, CRB_NIC_MSI_MODE_HOST, MSI_MODE_MULTIFUNC);
 	NXWR32(adapter, CRB_MPORT_MODE, MPORT_MULTI_FUNCTION_MODE);
 	NXWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_ACK);
 
+	if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
+		NXWR32(adapter, CRB_NIC_MSI_MODE_HOST, MSI_MODE_MULTIFUNC);
+
 	return err;
 }