qlcnic: Implement GET_LED_STATUS command for 82xx adapter.

o GET_LED_STATUS command will be used by driver to get
  current beacon state from 82xx adapter.
o Refactored qlcnic_store_beacon() to split 8200 and 8300
  specific calls.
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/qlogic/qlcnic/qlcnic.h

@@ -815,6 +815,7 @@ struct qlcnic_mac_list_s {
 #define QLCNIC_FW_CAPABILITY_2_LRO_MAX_TCP_SEG	BIT_2
 #define QLCNIC_FW_CAP2_HW_LRO_IPV6		BIT_3
 #define QLCNIC_FW_CAPABILITY_2_OCBB		BIT_5
+#define QLCNIC_FW_CAPABILITY_2_BEACON		BIT_7
 
 /* module types */
 #define LINKEVENT_MODULE_NOT_PRESENT			1
@@ -912,6 +913,9 @@ struct qlcnic_ipaddr {
 #define QLCNIC_IS_TSO_CAPABLE(adapter)  \
 	((adapter)->ahw->capabilities & QLCNIC_FW_CAPABILITY_TSO)
 
+#define QLCNIC_BEACON_EANBLE		0xC
+#define QLCNIC_BEACON_DISABLE		0xD
+
 #define QLCNIC_DEF_NUM_STS_DESC_RINGS	4
 #define QLCNIC_MSIX_TBL_SPACE		8192
 #define QLCNIC_PCI_REG_MSIX_TBL 	0x44
@@ -1543,6 +1547,7 @@ int qlcnic_set_default_offload_settings(struct qlcnic_adapter *);
 int qlcnic_reset_npar_config(struct qlcnic_adapter *);
 int qlcnic_set_eswitch_port_config(struct qlcnic_adapter *);
 void qlcnic_add_lb_filter(struct qlcnic_adapter *, struct sk_buff *, int, u16);
+int qlcnic_get_beacon_state(struct qlcnic_adapter *, u8 *);
 int qlcnic_83xx_configure_opmode(struct qlcnic_adapter *adapter);
 int qlcnic_read_mac_addr(struct qlcnic_adapter *);
 int qlcnic_setup_netdev(struct qlcnic_adapter *, struct net_device *, int);

drivers/net/ethernet/qlogic/qlcnic/qlcnic_ctx.c

@@ -37,6 +37,7 @@ static const struct qlcnic_mailbox_metadata qlcnic_mbx_tbl[] = {
 	{QLCNIC_CMD_TEMP_SIZE, 4, 4},
 	{QLCNIC_CMD_GET_TEMP_HDR, 4, 1},
 	{QLCNIC_CMD_SET_DRV_VER, 4, 1},
+	{QLCNIC_CMD_GET_LED_STATUS, 4, 2},
 };
 
 static inline u32 qlcnic_get_cmd_signature(struct qlcnic_hardware_context *ahw)

drivers/net/ethernet/qlogic/qlcnic/qlcnic_hw.c

@@ -1503,6 +1503,21 @@ int qlcnic_82xx_config_led(struct qlcnic_adapter *adapter, u32 state, u32 rate)
 	return rv;
 }
 
+int qlcnic_get_beacon_state(struct qlcnic_adapter *adapter, u8 *h_state)
+{
+	struct qlcnic_cmd_args cmd;
+	int err;
+
+	err = qlcnic_alloc_mbx_args(&cmd, adapter, QLCNIC_CMD_GET_LED_STATUS);
+	if (!err) {
+		err = qlcnic_issue_cmd(adapter, &cmd);
+		if (!err)
+			*h_state = cmd.rsp.arg[1];
+	}
+	qlcnic_free_mbx_args(&cmd);
+	return err;
+}
+
 void qlcnic_82xx_get_func_no(struct qlcnic_adapter *adapter)
 {
 	void __iomem *msix_base_addr;

drivers/net/ethernet/qlogic/qlcnic/qlcnic_hw.h

@@ -87,6 +87,7 @@ enum qlcnic_regs {
 #define	QLCNIC_CMD_CONFIG_VPORT			0x32
 #define QLCNIC_CMD_GET_MAC_STATS		0x37
 #define QLCNIC_CMD_SET_DRV_VER			0x38
+#define QLCNIC_CMD_GET_LED_STATUS		0x3C
 #define QLCNIC_CMD_CONFIGURE_RSS		0x41
 #define QLCNIC_CMD_CONFIG_INTR_COAL		0x43
 #define QLCNIC_CMD_CONFIGURE_LED		0x44

drivers/net/ethernet/qlogic/qlcnic/qlcnic_sysfs.c

@@ -114,57 +114,51 @@ static int qlcnic_validate_beacon(struct qlcnic_adapter *adapter, u16 beacon,
 	return 0;
 }
 
-static ssize_t qlcnic_store_beacon(struct device *dev,
-				   struct device_attribute *attr,
-				   const char *buf, size_t len)
+static int qlcnic_83xx_store_beacon(struct qlcnic_adapter *adapter,
+				    const char *buf, size_t len)
 {
-	struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
 	struct qlcnic_hardware_context *ahw = adapter->ahw;
-	int err, max_sds_rings = adapter->max_sds_rings;
-	u16 beacon;
-	u8 b_state, b_rate;
 	unsigned long h_beacon;
+	int err;
 
-	if (adapter->ahw->op_mode == QLCNIC_NON_PRIV_FUNC) {
-		dev_warn(dev,
-			 "LED test not supported in non privileged mode\n");
-		return -EOPNOTSUPP;
-	}
+	if (test_bit(__QLCNIC_RESETTING, &adapter->state))
+		return -EIO;
 
-	if (qlcnic_83xx_check(adapter) &&
-	    !test_bit(__QLCNIC_RESETTING, &adapter->state)) {
-		if (kstrtoul(buf, 2, &h_beacon))
-			return -EINVAL;
+	if (kstrtoul(buf, 2, &h_beacon))
+		return -EINVAL;
 
-		if (ahw->beacon_state == h_beacon)
-			return len;
+	if (ahw->beacon_state == h_beacon)
+		return len;
 
-		rtnl_lock();
-		if (!ahw->beacon_state) {
-			if (test_and_set_bit(__QLCNIC_LED_ENABLE,
-					     &adapter->state)) {
-				rtnl_unlock();
-				return -EBUSY;
-			}
-		}
-		if (h_beacon) {
-			err = qlcnic_83xx_config_led(adapter, 1, h_beacon);
-			if (err)
-				goto beacon_err;
-		} else {
-			err = qlcnic_83xx_config_led(adapter, 0, !h_beacon);
-			if (err)
-				goto beacon_err;
+	rtnl_lock();
+	if (!ahw->beacon_state) {
+		if (test_and_set_bit(__QLCNIC_LED_ENABLE, &adapter->state)) {
+			rtnl_unlock();
+			return -EBUSY;
 		}
-		/* set the current beacon state */
+	}
+
+	if (h_beacon)
+		err = qlcnic_83xx_config_led(adapter, 1, h_beacon);
+	else
+		err = qlcnic_83xx_config_led(adapter, 0, !h_beacon);
+	if (!err)
 		ahw->beacon_state = h_beacon;
-beacon_err:
-		if (!ahw->beacon_state)
-			clear_bit(__QLCNIC_LED_ENABLE, &adapter->state);
 
-		rtnl_unlock();
-		return len;
-	}
+	if (!ahw->beacon_state)
+		clear_bit(__QLCNIC_LED_ENABLE, &adapter->state);
+
+	rtnl_unlock();
+	return len;
+}
+
+static int qlcnic_82xx_store_beacon(struct qlcnic_adapter *adapter,
+				    const char *buf, size_t len)
+{
+	struct qlcnic_hardware_context *ahw = adapter->ahw;
+	int err, max_sds_rings = adapter->max_sds_rings;
+	u16 beacon;
+	u8 h_beacon_state, b_state, b_rate;
 
 	if (len != sizeof(u16))
 		return QL_STATUS_INVALID_PARAM;
@@ -174,16 +168,29 @@ static ssize_t qlcnic_store_beacon(struct device *dev,
 	if (err)
 		return err;
 
-	if (adapter->ahw->beacon_state == b_state)
+	if ((ahw->capabilities2 & QLCNIC_FW_CAPABILITY_2_BEACON)) {
+		err = qlcnic_get_beacon_state(adapter, &h_beacon_state);
+		if (!err) {
+			dev_info(&adapter->pdev->dev,
+				 "Failed to get current beacon state\n");
+		} else {
+			if (h_beacon_state == QLCNIC_BEACON_DISABLE)
+				ahw->beacon_state = 0;
+			else if (h_beacon_state == QLCNIC_BEACON_EANBLE)
+				ahw->beacon_state = 2;
+		}
+	}
+
+	if (ahw->beacon_state == b_state)
 		return len;
 
 	rtnl_lock();
-
-	if (!adapter->ahw->beacon_state)
+	if (!ahw->beacon_state) {
 		if (test_and_set_bit(__QLCNIC_LED_ENABLE, &adapter->state)) {
 			rtnl_unlock();
 			return -EBUSY;
 		}
+	}
 
 	if (test_bit(__QLCNIC_RESETTING, &adapter->state)) {
 		err = -EIO;
@@ -206,14 +213,37 @@ static ssize_t qlcnic_store_beacon(struct device *dev,
 	if (test_and_clear_bit(__QLCNIC_DIAG_RES_ALLOC, &adapter->state))
 		qlcnic_diag_free_res(adapter->netdev, max_sds_rings);
 
- out:
-	if (!adapter->ahw->beacon_state)
+out:
+	if (!ahw->beacon_state)
 		clear_bit(__QLCNIC_LED_ENABLE, &adapter->state);
 	rtnl_unlock();
 
 	return err;
 }
 
+static ssize_t qlcnic_store_beacon(struct device *dev,
+				   struct device_attribute *attr,
+				   const char *buf, size_t len)
+{
+	struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
+	int err = 0;
+
+	if (adapter->ahw->op_mode == QLCNIC_NON_PRIV_FUNC) {
+		dev_warn(dev,
+			 "LED test not supported in non privileged mode\n");
+		return -EOPNOTSUPP;
+	}
+
+	if (qlcnic_82xx_check(adapter))
+		err = qlcnic_82xx_store_beacon(adapter, buf, len);
+	else if (qlcnic_83xx_check(adapter))
+		err = qlcnic_83xx_store_beacon(adapter, buf, len);
+	else
+		return -EIO;
+
+	return err;
+}
+
 static ssize_t qlcnic_show_beacon(struct device *dev,
 				  struct device_attribute *attr, char *buf)
 {