netxen: fix detection of cut-thru firmware mode

Fix the detection of cut-thru mode of the hardware (direct dma
to host) to mode configured in SRE (ingress block) rather than
onboard memory control.
Signed-off-by: NDhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/netxen/netxen_nic_hdr.h

@@ -355,6 +355,7 @@ enum {
 #define NETXEN_HW_CRB_HUB_AGT_ADR_LPC	\
 	((NETXEN_HW_H6_CH_HUB_ADR << 7) | NETXEN_HW_LPC_CRB_AGT_ADR)
 
+#define NETXEN_SRE_MISC			(NETXEN_CRB_SRE + 0x0002c)
 #define NETXEN_SRE_INT_STATUS		(NETXEN_CRB_SRE + 0x00034)
 #define NETXEN_SRE_PBI_ACTIVE_STATUS	(NETXEN_CRB_SRE + 0x01014)
 #define NETXEN_SRE_L1RE_CTL		(NETXEN_CRB_SRE + 0x03000)

drivers/net/netxen/netxen_nic_hw.c

@@ -2041,8 +2041,8 @@ void netxen_nic_get_firmware_info(struct netxen_adapter *adapter)
 			fw_major, fw_minor, fw_build);
 
 	if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
-		i = NXRD32(adapter, NETXEN_MIU_MN_CONTROL);
-		adapter->ahw.cut_through = (i & 0x4) ? 1 : 0;
+		i = NXRD32(adapter, NETXEN_SRE_MISC);
+		adapter->ahw.cut_through = (i & 0x8000) ? 1 : 0;
 		dev_info(&pdev->dev, "firmware running in %s mode\n",
 		adapter->ahw.cut_through ? "cut-through" : "legacy");
 	}