qlcnic: enable 83xx virtual NIC mode

Enable 83xx virtual NIC mode

Signed-off-by: Rajesh Borundia <rajesh.borundia@qlogic.com>
Signed-off-by: Sony Chacko <sony.chacko@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

6 files changed, 285 insertions, 7 deletions

diff --git a/drivers/net/ethernet/qlogic/qlcnic/Makefile b/drivers/net/ethernet/qlogic/qlcnic/Makefile
index 799325db5c79..25b73f163886 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/Makefile
+++ b/drivers/net/ethernet/qlogic/qlcnic/Makefile
@@ -7,4 +7,4 @@ obj-$(CONFIG_QLCNIC) := qlcnic.o
 qlcnic-y := qlcnic_hw.o qlcnic_main.o qlcnic_init.o \
         qlcnic_ethtool.o qlcnic_ctx.o qlcnic_io.o \
         qlcnic_sysfs.o qlcnic_minidump.o qlcnic_83xx_hw.o \
-        qlcnic_83xx_init.o
+        qlcnic_83xx_init.o qlcnic_83xx_vnic.o
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h b/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h
index 5b36d92b237d..af8510bdfb9e 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h
@@ -1523,7 +1523,10 @@ int __qlcnic_up(struct qlcnic_adapter *, struct net_device *);
 void qlcnic_restore_indev_addr(struct net_device *, unsigned long);
 
 int qlcnic_check_temp(struct qlcnic_adapter *);
-
+int qlcnic_init_pci_info(struct qlcnic_adapter *);
+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 *);
 /*
  * QLOGIC Board information
  */
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.h b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.h
index 969bda8e32c4..f378d2171615 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.h
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.h
@@ -400,4 +400,11 @@ int qlcnic_83xx_lock_driver(struct qlcnic_adapter *);
 void qlcnic_83xx_unlock_driver(struct qlcnic_adapter *);
 int qlcnic_83xx_set_default_offload_settings(struct qlcnic_adapter *);
 int qlcnic_83xx_ms_mem_write128(struct qlcnic_adapter *, u64, u32 *, u32);
+int qlcnic_83xx_idc_vnic_pf_entry(struct qlcnic_adapter *);
+int qlcnic_83xx_enable_vnic_mode(struct qlcnic_adapter *, int);
+int qlcnic_83xx_disable_vnic_mode(struct qlcnic_adapter *, int);
+int qlcnic_83xx_config_vnic_opmode(struct qlcnic_adapter *);
+int qlcnic_83xx_get_vnic_vport_info(struct qlcnic_adapter *,
+                                    struct qlcnic_info *, u8);
+int qlcnic_83xx_get_vnic_pf_info(struct qlcnic_adapter *, struct qlcnic_info *);
 #endif
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c
index d222ee291e7c..b14fb83fcdd6 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c
@@ -643,6 +643,52 @@ int qlcnic_83xx_idc_ready_state_entry(struct qlcnic_adapter *adapter)
         return 0;
 }
 
+/**
+ * qlcnic_83xx_idc_vnic_pf_entry
+ *
+ * @adapter: adapter structure
+ *
+ * Ensure vNIC mode privileged function starts only after vNIC mode is
+ * enabled by management function.
+ * If vNIC mode is ready, start initialization.
+ *
+ * Returns: -EIO or 0
+ *
+ **/
+int qlcnic_83xx_idc_vnic_pf_entry(struct qlcnic_adapter *adapter)
+{
+        u32 state;
+        struct qlcnic_hardware_context *ahw = adapter->ahw;
+
+        /* Privileged function waits till mgmt function enables VNIC mode */
+        state = QLCRDX(adapter->ahw, QLC_83XX_VNIC_STATE);
+        if (state != QLCNIC_DEV_NPAR_OPER) {
+                if (!ahw->idc.vnic_wait_limit--) {
+                        qlcnic_83xx_idc_enter_failed_state(adapter, 1);
+                        return -EIO;
+                }
+                dev_info(&adapter->pdev->dev, "vNIC mode disabled\n");
+                return -EIO;
+
+        } else {
+                /* Perform one time initialization from ready state */
+                if (ahw->idc.vnic_state != QLCNIC_DEV_NPAR_OPER) {
+                        qlcnic_83xx_idc_update_idc_params(adapter);
+
+                        /* If the previous state is UNKNOWN, device will be
+                           already attached properly by Init routine*/
+                        if (ahw->idc.prev_state != QLC_83XX_IDC_DEV_UNKNOWN) {
+                                if (qlcnic_83xx_idc_reattach_driver(adapter))
+                                        return -EIO;
+                        }
+                        adapter->ahw->idc.vnic_state =  QLCNIC_DEV_NPAR_OPER;
+                        dev_info(&adapter->pdev->dev, "vNIC mode enabled\n");
+                }
+        }
+
+        return 0;
+}
+
 static int qlcnic_83xx_idc_unknown_state(struct qlcnic_adapter *adapter)
 {
         adapter->ahw->idc.err_code = -EIO;
@@ -802,6 +848,8 @@ static int qlcnic_83xx_idc_need_reset_state(struct qlcnic_adapter *adapter)
                 qlcnic_83xx_idc_update_audit_reg(adapter, 0, 1);
                 set_bit(__QLCNIC_RESETTING, &adapter->state);
                 clear_bit(QLC_83XX_MBX_READY, &adapter->ahw->idc.status);
+                if (adapter->ahw->nic_mode == QLC_83XX_VIRTUAL_NIC_MODE)
+                        qlcnic_83xx_disable_vnic_mode(adapter, 1);
                 qlcnic_83xx_idc_detach_driver(adapter);
         }
 
@@ -1887,7 +1935,10 @@ static int qlcnic_83xx_configure_opmode(struct qlcnic_adapter *adapter)
         if (ret == -EIO)
                 return -EIO;
 
-        if (ret == QLC_83XX_DEFAULT_MODE) {
+        if (ret == QLC_83XX_VIRTUAL_NIC_MODE) {
+                if (qlcnic_83xx_config_vnic_opmode(adapter))
+                        return -EIO;
+        } else if (ret == QLC_83XX_DEFAULT_MODE) {
                 if (qlcnic_83xx_config_default_opmode(adapter))
                         return -EIO;
         }
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_vnic.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_vnic.c
new file mode 100644
index 000000000000..d39447104228
--- /dev/null
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_vnic.c
@@ -0,0 +1,216 @@
+#include "qlcnic.h"
+#include "qlcnic_hw.h"
+
+int qlcnic_83xx_enable_vnic_mode(struct qlcnic_adapter *adapter, int lock)
+{
+        if (lock) {
+                if (qlcnic_83xx_lock_driver(adapter))
+                        return -EBUSY;
+        }
+        QLCWRX(adapter->ahw, QLC_83XX_VNIC_STATE, QLCNIC_DEV_NPAR_OPER);
+        if (lock)
+                qlcnic_83xx_unlock_driver(adapter);
+
+        return 0;
+}
+
+int qlcnic_83xx_disable_vnic_mode(struct qlcnic_adapter *adapter, int lock)
+{
+        struct qlcnic_hardware_context *ahw = adapter->ahw;
+
+        if (lock) {
+                if (qlcnic_83xx_lock_driver(adapter))
+                        return -EBUSY;
+        }
+
+        QLCWRX(adapter->ahw, QLC_83XX_VNIC_STATE, QLCNIC_DEV_NPAR_NON_OPER);
+        ahw->idc.vnic_state = QLCNIC_DEV_NPAR_NON_OPER;
+
+        if (lock)
+                qlcnic_83xx_unlock_driver(adapter);
+
+        return 0;
+}
+
+static int qlcnic_83xx_set_vnic_opmode(struct qlcnic_adapter *adapter)
+{
+        u8 id;
+        int i, ret = -EBUSY;
+        u32 data = QLCNIC_MGMT_FUNC;
+        struct qlcnic_hardware_context *ahw = adapter->ahw;
+
+        if (qlcnic_83xx_lock_driver(adapter))
+                return ret;
+
+        if (qlcnic_config_npars) {
+                for (i = 0; i < ahw->act_pci_func; i++) {
+                        id = adapter->npars[i].pci_func;
+                        if (id == ahw->pci_func)
+                                continue;
+                        data |= qlcnic_config_npars &
+                                QLC_83XX_SET_FUNC_OPMODE(0x3, id);
+                }
+        } else {
+                data = QLCRDX(adapter->ahw, QLC_83XX_DRV_OP_MODE);
+                data = (data & ~QLC_83XX_SET_FUNC_OPMODE(0x3, ahw->pci_func)) |
+                       QLC_83XX_SET_FUNC_OPMODE(QLCNIC_MGMT_FUNC,
+                                                ahw->pci_func);
+        }
+        QLCWRX(adapter->ahw, QLC_83XX_DRV_OP_MODE, data);
+
+        qlcnic_83xx_unlock_driver(adapter);
+
+        return 0;
+}
+
+static void
+qlcnic_83xx_config_vnic_buff_descriptors(struct qlcnic_adapter *adapter)
+{
+        struct qlcnic_hardware_context *ahw = adapter->ahw;
+
+        if (ahw->port_type == QLCNIC_XGBE) {
+                adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_VF;
+                adapter->max_rxd = MAX_RCV_DESCRIPTORS_VF;
+                adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
+                adapter->max_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
+
+        } else if (ahw->port_type == QLCNIC_GBE) {
+                adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G;
+                adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
+                adapter->max_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
+                adapter->max_rxd = MAX_RCV_DESCRIPTORS_1G;
+        }
+        adapter->num_txd = MAX_CMD_DESCRIPTORS;
+        adapter->max_rds_rings = MAX_RDS_RINGS;
+}
+
+
+/**
+ * qlcnic_83xx_init_mgmt_vnic
+ *
+ * @adapter: adapter structure
+ * Management virtual NIC sets the operational mode of other vNIC's and
+ * configures embedded switch (ESWITCH).
+ * Returns: Success(0) or error code.
+ *
+ **/
+static int qlcnic_83xx_init_mgmt_vnic(struct qlcnic_adapter *adapter)
+{
+        int err = -EIO;
+
+        if (!(adapter->flags & QLCNIC_ADAPTER_INITIALIZED)) {
+                if (qlcnic_init_pci_info(adapter))
+                        return err;
+
+                if (qlcnic_83xx_set_vnic_opmode(adapter))
+                        return err;
+
+                if (qlcnic_set_default_offload_settings(adapter))
+                        return err;
+        } else {
+                if (qlcnic_reset_npar_config(adapter))
+                        return err;
+        }
+
+        if (qlcnic_83xx_get_port_info(adapter))
+                return err;
+
+        qlcnic_83xx_config_vnic_buff_descriptors(adapter);
+        adapter->ahw->msix_supported = !!qlcnic_use_msi_x;
+        adapter->flags |= QLCNIC_ADAPTER_INITIALIZED;
+        qlcnic_83xx_enable_vnic_mode(adapter, 1);
+
+        dev_info(&adapter->pdev->dev, "HAL Version: %d, Management function\n",
+                 adapter->ahw->fw_hal_version);
+
+        return 0;
+}
+
+static int qlcnic_83xx_init_privileged_vnic(struct qlcnic_adapter *adapter)
+{
+        int err = -EIO;
+
+        if (qlcnic_83xx_get_port_info(adapter))
+                return err;
+
+        qlcnic_83xx_config_vnic_buff_descriptors(adapter);
+        adapter->ahw->msix_supported = !!qlcnic_use_msi_x;
+        adapter->flags |= QLCNIC_ADAPTER_INITIALIZED;
+
+        dev_info(&adapter->pdev->dev,
+                 "HAL Version: %d, Privileged function\n",
+                 adapter->ahw->fw_hal_version);
+        return 0;
+}
+
+static int qlcnic_83xx_init_non_privileged_vnic(struct qlcnic_adapter *adapter)
+{
+        int err = -EIO;
+
+        qlcnic_83xx_get_fw_version(adapter);
+        if (qlcnic_set_eswitch_port_config(adapter))
+                return err;
+
+        if (qlcnic_83xx_get_port_info(adapter))
+                return err;
+
+        qlcnic_83xx_config_vnic_buff_descriptors(adapter);
+        adapter->ahw->msix_supported = !!qlcnic_use_msi_x;
+        adapter->flags |= QLCNIC_ADAPTER_INITIALIZED;
+
+        dev_info(&adapter->pdev->dev, "HAL Version: %d, Virtual function\n",
+                 adapter->ahw->fw_hal_version);
+
+        return 0;
+}
+
+/**
+ * qlcnic_83xx_vnic_opmode
+ *
+ * @adapter: adapter structure
+ * Identify virtual NIC operational modes.
+ *
+ * Returns: Success(0) or error code.
+ *
+ **/
+int qlcnic_83xx_config_vnic_opmode(struct qlcnic_adapter *adapter)
+{
+        u32 op_mode, priv_level;
+        struct qlcnic_hardware_context *ahw = adapter->ahw;
+        struct qlcnic_nic_template *nic_ops = adapter->nic_ops;
+
+        qlcnic_get_func_no(adapter);
+        op_mode = QLCRDX(adapter->ahw, QLC_83XX_DRV_OP_MODE);
+
+        if (op_mode == QLC_83XX_DEFAULT_OPMODE)
+                priv_level = QLCNIC_MGMT_FUNC;
+        else
+                priv_level = QLC_83XX_GET_FUNC_PRIVILEGE(op_mode,
+                                                         ahw->pci_func);
+
+        if (priv_level == QLCNIC_NON_PRIV_FUNC) {
+                ahw->op_mode = QLCNIC_NON_PRIV_FUNC;
+                ahw->idc.state_entry = qlcnic_83xx_idc_ready_state_entry;
+                nic_ops->init_driver = qlcnic_83xx_init_non_privileged_vnic;
+        } else if (priv_level == QLCNIC_PRIV_FUNC) {
+                ahw->op_mode = QLCNIC_PRIV_FUNC;
+                ahw->idc.state_entry = qlcnic_83xx_idc_vnic_pf_entry;
+                nic_ops->init_driver = qlcnic_83xx_init_privileged_vnic;
+        } else if (priv_level == QLCNIC_MGMT_FUNC) {
+                ahw->op_mode = QLCNIC_MGMT_FUNC;
+                ahw->idc.state_entry = qlcnic_83xx_idc_ready_state_entry;
+                nic_ops->init_driver = qlcnic_83xx_init_mgmt_vnic;
+        } else {
+                return -EIO;
+        }
+
+        if (ahw->capabilities & BIT_23)
+                adapter->flags |= QLCNIC_ESWITCH_ENABLED;
+        else
+                adapter->flags &= ~QLCNIC_ESWITCH_ENABLED;
+
+        adapter->ahw->idc.vnic_state = QLCNIC_DEV_NPAR_NON_OPER;
+        adapter->ahw->idc.vnic_wait_limit = QLCNIC_DEV_NPAR_OPER_TIMEO;
+
+        return 0;
+}
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
index c71e1dc7295d..da04432f36ec 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
@@ -502,7 +502,8 @@ static int qlcnic_get_act_pci_func(struct qlcnic_adapter *adapter)
         kfree(pci_info);
         return ret;
 }
-static int qlcnic_init_pci_info(struct qlcnic_adapter *adapter)
+
+int qlcnic_init_pci_info(struct qlcnic_adapter *adapter)
 {
         struct qlcnic_pci_info *pci_info;
         int i, ret = 0, j = 0;
@@ -851,7 +852,7 @@ void qlcnic_set_eswitch_port_features(struct qlcnic_adapter *adapter,
         qlcnic_set_netdev_features(adapter, esw_cfg);
 }
 
-static int qlcnic_set_eswitch_port_config(struct qlcnic_adapter *adapter)
+int qlcnic_set_eswitch_port_config(struct qlcnic_adapter *adapter)
 {
         struct qlcnic_esw_func_cfg esw_cfg;
 
@@ -950,7 +951,7 @@ qlcnic_check_eswitch_mode(struct qlcnic_adapter *adapter)
         return err;
 }
 
-static int qlcnic_set_default_offload_settings(struct qlcnic_adapter *adapter)
+int qlcnic_set_default_offload_settings(struct qlcnic_adapter *adapter)
 {
         struct qlcnic_esw_func_cfg esw_cfg;
         struct qlcnic_npar_info *npar;
@@ -1007,7 +1008,7 @@ qlcnic_reset_eswitch_config(struct qlcnic_adapter *adapter,
         return 0;
 }
 
-static int qlcnic_reset_npar_config(struct qlcnic_adapter *adapter)
+int qlcnic_reset_npar_config(struct qlcnic_adapter *adapter)
 {
         int i, err;
         struct qlcnic_npar_info *npar;