qlcnic: Fix a bug in setting up NIC partitioning mode

The driver was not detecting the presence of NIC partitioning capability of the
firmware properly. Now, it checks the eswitch set bit in the FW capabilities
register and accordingly sets the driver mode as NPAR capable or not.
Signed-off-by: Anirban Chakraborty <anirban.chakraborty@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/qlcnic/qlcnic.h

@@ -891,7 +891,7 @@ struct qlcnic_mac_req {
 #define QLCNIC_LRO_ENABLED		0x08
 #define QLCNIC_BRIDGE_ENABLED       	0X10
 #define QLCNIC_DIAG_ENABLED		0x20
-#define QLCNIC_NPAR_ENABLED		0x40
+#define QLCNIC_ESWITCH_ENABLED		0x40
 #define QLCNIC_IS_MSI_FAMILY(adapter) \
 	((adapter)->flags & (QLCNIC_MSI_ENABLED | QLCNIC_MSIX_ENABLED))
 

drivers/net/qlcnic/qlcnic_ctx.c

@@ -637,6 +637,11 @@ int qlcnic_get_nic_info(struct qlcnic_adapter *adapter, u8 func_id)
 		adapter->capabilities = le32_to_cpu(nic_info->capabilities);
 		adapter->max_mac_filters = nic_info->max_mac_filters;
 
+		if (adapter->capabilities & BIT_6)
+			adapter->flags |= QLCNIC_ESWITCH_ENABLED;
+		else
+			adapter->flags &= ~QLCNIC_ESWITCH_ENABLED;
+
 		dev_info(&adapter->pdev->dev,
 			"phy port: %d switch_mode: %d,\n"
 			"\tmax_tx_q: %d max_rx_q: %d min_tx_bw: 0x%x,\n"

drivers/net/qlcnic/qlcnic_main.c

@@ -502,39 +502,28 @@ qlcnic_set_function_modes(struct qlcnic_adapter *adapter)
 	if (QLC_DEV_CLR_REF_CNT(ref_count, adapter->ahw.pci_func))
 		goto err_npar;
 
+	if (qlcnic_config_npars) {
 		for (i = 0; i < QLCNIC_MAX_PCI_FUNC; i++) {
 			id = adapter->npars[i].id;
 			if (adapter->npars[i].type != QLCNIC_TYPE_NIC ||
 				id == adapter->ahw.pci_func)
 				continue;
-		data |= (qlcnic_config_npars & QLC_DEV_SET_DRV(0xf, id));
+			data |= (qlcnic_config_npars &
+					QLC_DEV_SET_DRV(0xf, id));
+		}
+	} else {
+		data = readl(priv_op);
+		data = (data & ~QLC_DEV_SET_DRV(0xf, adapter->ahw.pci_func)) |
+			(QLC_DEV_SET_DRV(QLCNIC_MGMT_FUNC,
+			adapter->ahw.pci_func));
 	}
 	writel(data, priv_op);
-
 err_npar:
 	qlcnic_api_unlock(adapter);
 err_lock:
 	return ret;
 }
 
-static u8
-qlcnic_set_mgmt_driver(struct qlcnic_adapter *adapter)
-{
-	u8 i, ret = 0;
-
-	if (qlcnic_get_pci_info(adapter))
-		return ret;
-	/* Set the eswitch */
-	for (i = 0; i < QLCNIC_NIU_MAX_XG_PORTS; i++) {
-		if (!qlcnic_get_eswitch_capabilities(adapter, i,
-			&adapter->eswitch[i])) {
-			ret++;
-			qlcnic_toggle_eswitch(adapter, i, ret);
-		}
-	}
-	return ret;
-}
-
 static u32
 qlcnic_get_driver_mode(struct qlcnic_adapter *adapter)
 {
@@ -550,6 +539,7 @@ qlcnic_get_driver_mode(struct qlcnic_adapter *adapter)
 		adapter->nic_ops = &qlcnic_ops;
 		adapter->fw_hal_version = QLCNIC_FW_BASE;
 		adapter->ahw.pci_func = PCI_FUNC(adapter->pdev->devfn);
+		adapter->capabilities = QLCRD32(adapter, CRB_FW_CAPABILITIES_1);
 		dev_info(&adapter->pdev->dev,
 			"FW does not support nic partion\n");
 		return adapter->fw_hal_version;
@@ -562,29 +552,28 @@ qlcnic_get_driver_mode(struct qlcnic_adapter *adapter)
 	func = (func - msix_base)/QLCNIC_MSIX_TBL_PGSIZE;
 	adapter->ahw.pci_func = func;
 
+	qlcnic_get_nic_info(adapter, adapter->ahw.pci_func);
+
+	if (!(adapter->flags & QLCNIC_ESWITCH_ENABLED))	{
+		adapter->nic_ops = &qlcnic_ops;
+		return adapter->fw_hal_version;
+	}
+
 	/* Determine function privilege level */
 	priv_op = adapter->ahw.pci_base0 + QLCNIC_DRV_OP_MODE;
 	op_mode = readl(priv_op);
-	if (op_mode == QLC_DEV_DRV_DEFAULT) {
+	if (op_mode == QLC_DEV_DRV_DEFAULT)
 		priv_level = QLCNIC_MGMT_FUNC;
-		if (qlcnic_api_lock(adapter))
-			return 0;
-		op_mode = (op_mode & ~QLC_DEV_SET_DRV(0xf, func)) |
-				(QLC_DEV_SET_DRV(QLCNIC_MGMT_FUNC, func));
-		writel(op_mode, priv_op);
-		qlcnic_api_unlock(adapter);
-
-	} else
+	else
 		priv_level = QLC_DEV_GET_DRV(op_mode, adapter->ahw.pci_func);
 
 	switch (priv_level) {
 	case QLCNIC_MGMT_FUNC:
 		adapter->op_mode = QLCNIC_MGMT_FUNC;
 		adapter->nic_ops = &qlcnic_pf_ops;
+		qlcnic_get_pci_info(adapter);
 		/* Set privilege level for other functions */
-		if (qlcnic_config_npars)
 		qlcnic_set_function_modes(adapter);
-		qlcnic_dev_set_npar_ready(adapter);
 		dev_info(&adapter->pdev->dev,
 			"HAL Version: %d, Management function\n",
 			adapter->fw_hal_version);
@@ -716,11 +705,6 @@ qlcnic_check_options(struct qlcnic_adapter *adapter)
 	dev_info(&pdev->dev, "firmware v%d.%d.%d\n",
 			fw_major, fw_minor, fw_build);
 
-	if (adapter->fw_hal_version == QLCNIC_FW_NPAR)
-		qlcnic_get_nic_info(adapter, adapter->ahw.pci_func);
-	else
-		adapter->capabilities = QLCRD32(adapter, CRB_FW_CAPABILITIES_1);
-
 	adapter->flags &= ~QLCNIC_LRO_ENABLED;
 
 	if (adapter->ahw.port_type == QLCNIC_XGBE) {
@@ -731,6 +715,8 @@ qlcnic_check_options(struct qlcnic_adapter *adapter)
 		adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
 	}
 
+	qlcnic_get_nic_info(adapter, adapter->ahw.pci_func);
+
 	adapter->msix_supported = !!use_msi_x;
 	adapter->rss_supported = !!use_msi_x;
 
@@ -797,13 +783,11 @@ qlcnic_start_firmware(struct qlcnic_adapter *adapter)
 	QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_READY);
 	qlcnic_idc_debug_info(adapter, 1);
 
-	qlcnic_dev_set_npar_ready(adapter);
-
 	qlcnic_check_options(adapter);
 
-	if (adapter->fw_hal_version != QLCNIC_FW_BASE &&
-			adapter->op_mode == QLCNIC_MGMT_FUNC)
-		qlcnic_set_mgmt_driver(adapter);
+	if (adapter->flags & QLCNIC_ESWITCH_ENABLED &&
+		adapter->op_mode != QLCNIC_NON_PRIV_FUNC)
+		qlcnic_dev_set_npar_ready(adapter);
 
 	adapter->need_fw_reset = 0;
 
@@ -2449,10 +2433,6 @@ qlcnic_dev_set_npar_ready(struct qlcnic_adapter *adapter)
 {
 	u32 state;
 
-	if (adapter->op_mode == QLCNIC_NON_PRIV_FUNC ||
-		adapter->fw_hal_version == QLCNIC_FW_BASE)
-		return;
-
 	if (qlcnic_api_lock(adapter))
 		return;