be2net: fix port-type reporting in get_settings

Report the ethtool port-type/supported/advertising values based on the
cable_type for QSFP and SFP+ interfaces. The cable_type is parsed from
the transceiver data fetched from the FW.

Signed-off-by: Ravikumar Nelavelli <ravikumar.nelavelli@emulex.com>
Signed-off-by: Suresh Reddy <Suresh.Reddy@emulex.com>
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/emulex/benet/be.h

@@ -407,9 +407,9 @@ struct phy_info {
 	u16 auto_speeds_supported;
 	u16 fixed_speeds_supported;
 	int link_speed;
-	u32 dac_cable_len;
 	u32 advertising;
 	u32 supported;
+	u8 cable_type;
 };
 
 struct be_resources {

drivers/net/ethernet/emulex/benet/be_cmds.c

@@ -2296,6 +2296,31 @@ err_unlock:
 	return status;
 }
 
+int be_cmd_query_cable_type(struct be_adapter *adapter)
+{
+	u8 page_data[PAGE_DATA_LEN];
+	int status;
+
+	status = be_cmd_read_port_transceiver_data(adapter, TR_PAGE_A0,
+						   page_data);
+	if (!status) {
+		switch (adapter->phy.interface_type) {
+		case PHY_TYPE_QSFP:
+			adapter->phy.cable_type =
+				page_data[QSFP_PLUS_CABLE_TYPE_OFFSET];
+			break;
+		case PHY_TYPE_SFP_PLUS_10GB:
+			adapter->phy.cable_type =
+				page_data[SFP_PLUS_CABLE_TYPE_OFFSET];
+			break;
+		default:
+			adapter->phy.cable_type = 0;
+			break;
+		}
+	}
+	return status;
+}
+
 int lancer_cmd_delete_object(struct be_adapter *adapter, const char *obj_name)
 {
 	struct lancer_cmd_req_delete_object *req;

drivers/net/ethernet/emulex/benet/be_cmds.h

@@ -1014,8 +1014,16 @@ enum {
 	TR_PAGE_A2 = 0xa2
 };
 
+/* From SFF-8436 QSFP+ spec */
+#define	QSFP_PLUS_CABLE_TYPE_OFFSET	0x83
+#define	QSFP_PLUS_CR4_CABLE		0x8
+#define	QSFP_PLUS_SR4_CABLE		0x4
+#define	QSFP_PLUS_LR4_CABLE		0x2
+
 /* From SFF-8472 spec */
-#define	SFP_PLUS_SFF_8472_COMP	0x5E
+#define	SFP_PLUS_SFF_8472_COMP		0x5E
+#define	SFP_PLUS_CABLE_TYPE_OFFSET	0x8
+#define	SFP_PLUS_COPPER_CABLE		0x4
 
 #define PAGE_DATA_LEN   256
 struct be_cmd_resp_port_type {
@@ -1355,6 +1363,9 @@ enum {
 	PHY_TYPE_BASET_1GB,
 	PHY_TYPE_BASEX_1GB,
 	PHY_TYPE_SGMII,
+	PHY_TYPE_QSFP,
+	PHY_TYPE_KR4_40GB,
+	PHY_TYPE_KR2_20GB,
 	PHY_TYPE_DISABLED = 255
 };
 
@@ -1363,6 +1374,7 @@ enum {
 #define BE_SUPPORTED_SPEED_100MBPS	2
 #define BE_SUPPORTED_SPEED_1GBPS	4
 #define BE_SUPPORTED_SPEED_10GBPS	8
+#define BE_SUPPORTED_SPEED_40GBPS	0x20
 
 #define BE_AN_EN			0x2
 #define BE_PAUSE_SYM_EN			0x80
@@ -2056,6 +2068,7 @@ int be_cmd_get_beacon_state(struct be_adapter *adapter, u8 port_num,
 			    u32 *state);
 int be_cmd_read_port_transceiver_data(struct be_adapter *adapter,
 				      u8 page_num, u8 *data);
+int be_cmd_query_cable_type(struct be_adapter *adapter);
 int be_cmd_write_flashrom(struct be_adapter *adapter, struct be_dma_mem *cmd,
 			  u32 flash_oper, u32 flash_opcode, u32 buf_size);
 int lancer_cmd_write_object(struct be_adapter *adapter, struct be_dma_mem *cmd,

drivers/net/ethernet/emulex/benet/be_ethtool.c

@@ -475,18 +475,27 @@ static int be_get_sset_count(struct net_device *netdev, int stringset)
 	}
 }
 
-static u32 be_get_port_type(u32 phy_type, u32 dac_cable_len)
+static u32 be_get_port_type(struct be_adapter *adapter)
 {
 	u32 port;
 
-	switch (phy_type) {
+	switch (adapter->phy.interface_type) {
 	case PHY_TYPE_BASET_1GB:
 	case PHY_TYPE_BASEX_1GB:
 	case PHY_TYPE_SGMII:
 		port = PORT_TP;
 		break;
 	case PHY_TYPE_SFP_PLUS_10GB:
-		port = dac_cable_len ? PORT_DA : PORT_FIBRE;
+		if (adapter->phy.cable_type & SFP_PLUS_COPPER_CABLE)
+			port = PORT_DA;
+		else
+			port = PORT_FIBRE;
+		break;
+	case PHY_TYPE_QSFP:
+		if (adapter->phy.cable_type & QSFP_PLUS_CR4_CABLE)
+			port = PORT_DA;
+		else
+			port = PORT_FIBRE;
 		break;
 	case PHY_TYPE_XFP_10GB:
 	case PHY_TYPE_SFP_1GB:
@@ -502,11 +511,11 @@ static u32 be_get_port_type(u32 phy_type, u32 dac_cable_len)
 	return port;
 }
 
-static u32 convert_to_et_setting(u32 if_type, u32 if_speeds)
+static u32 convert_to_et_setting(struct be_adapter *adapter, u32 if_speeds)
 {
 	u32 val = 0;
 
-	switch (if_type) {
+	switch (adapter->phy.interface_type) {
 	case PHY_TYPE_BASET_1GB:
 	case PHY_TYPE_BASEX_1GB:
 	case PHY_TYPE_SGMII:
@@ -529,6 +538,20 @@ static u32 convert_to_et_setting(u32 if_type, u32 if_speeds)
 		val |= SUPPORTED_Backplane |
 				SUPPORTED_10000baseKR_Full;
 		break;
+	case PHY_TYPE_QSFP:
+		if (if_speeds & BE_SUPPORTED_SPEED_40GBPS) {
+			switch (adapter->phy.cable_type) {
+			case QSFP_PLUS_CR4_CABLE:
+				val |= SUPPORTED_40000baseCR4_Full;
+				break;
+			case QSFP_PLUS_LR4_CABLE:
+				val |= SUPPORTED_40000baseLR4_Full;
+				break;
+			default:
+				val |= SUPPORTED_40000baseSR4_Full;
+				break;
+			}
+		}
 	case PHY_TYPE_SFP_PLUS_10GB:
 	case PHY_TYPE_XFP_10GB:
 	case PHY_TYPE_SFP_1GB:
@@ -569,8 +592,6 @@ static int be_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
 	int status;
 	u32 auto_speeds;
 	u32 fixed_speeds;
-	u32 dac_cable_len;
-	u16 interface_type;
 
 	if (adapter->phy.link_speed < 0) {
 		status = be_cmd_link_status_query(adapter, &link_speed,
@@ -581,21 +602,19 @@ static int be_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
 
 		status = be_cmd_get_phy_info(adapter);
 		if (!status) {
-			interface_type = adapter->phy.interface_type;
 			auto_speeds = adapter->phy.auto_speeds_supported;
 			fixed_speeds = adapter->phy.fixed_speeds_supported;
-			dac_cable_len = adapter->phy.dac_cable_len;
+
+			be_cmd_query_cable_type(adapter);
 
 			ecmd->supported =
-				convert_to_et_setting(interface_type,
+				convert_to_et_setting(adapter,
 						      auto_speeds |
 						      fixed_speeds);
 			ecmd->advertising =
-				convert_to_et_setting(interface_type,
-						      auto_speeds);
+				convert_to_et_setting(adapter, auto_speeds);
 
-			ecmd->port = be_get_port_type(interface_type,
-						      dac_cable_len);
+			ecmd->port = be_get_port_type(adapter);
 
 			if (adapter->phy.auto_speeds_supported) {
 				ecmd->supported |= SUPPORTED_Autoneg;