commit 443be7960be77f3345b44491c700ae4471b0fe57
author Dhananjay Phadke <dhananjay@netxen.com> Mon Mar 17 19:59:48 2008 -0700
committer Jeff Garzik <jeff@garzik.org> Tue Mar 25 23:16:15 2008 -0400
tree 48a20558ab8b4726507948b6fc3c850cac13f84b
parent 9e6db60825ef7e7999abc610ce256ba768e58162

netxen: improve msi support

Recent netxen firmware has new scheme of generating MSI interrupts, it
raises interrupt and blocks itself, waiting for driver to unmask. This
reduces chance of spurious interrupts.

The driver will be able to deal with older firmware as well.

Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Tested-by: Vernon Mauery <mauery@us.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

drivers/net/netxen/netxen_nic_phan_reg.h

diff --git a/drivers/net/netxen/netxen_nic_phan_reg.h b/drivers/net/netxen/netxen_nic_phan_reg.h
index ffa3b72..a566b50 100644
--- a/drivers/net/netxen/netxen_nic_phan_reg.h
+++ b/drivers/net/netxen/netxen_nic_phan_reg.h
@@ -126,8 +126,11 @@
  */
 #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
 
 /* used for ethtool tests */
 #define CRB_SCRATCHPAD_TEST	    NETXEN_NIC_REG(0x280)