Date:	Fri, 19 Oct 2012 04:37:35 -0400
From:	Sony Chacko <sony.chacko@...gic.com>
To:	davem@...emloft.net
Cc:	netdev@...r.kernel.org, Dept_NX_Linux_NIC_Driver@...gic.com,
	Sony Chacko <sony.chacko@...gic.com>
Subject: [PATCH V2 17/20] qlcnic: enable 83xx virtual NIC mode

From: Sony Chacko <sony.chacko@...gic.com>

Enable 83xx virtual NIC mode

Signed-off-by: Rajesh Borundia <rajesh.borundia@...gic.com>
Signed-off-by: Sony Chacko <sony.chacko@...gic.com>
---
 drivers/net/ethernet/qlogic/qlcnic/Makefile        |    3 +-
 drivers/net/ethernet/qlogic/qlcnic/qlcnic.h        |    1 +
 .../net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.h    |    7 +
 .../net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c  |   53 +++++-
 .../net/ethernet/qlogic/qlcnic/qlcnic_83xx_vnic.c  |  216 ++++++++++++++++++++
 5 files changed, 278 insertions(+), 2 deletions(-)
 create mode 100644 drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_vnic.c

diff --git a/drivers/net/ethernet/qlogic/qlcnic/Makefile b/drivers/net/ethernet/qlogic/qlcnic/Makefile
index 9a03a72..4fb61dc 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/Makefile
+++ b/drivers/net/ethernet/qlogic/qlcnic/Makefile
@@ -6,4 +6,5 @@ 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_83xx_hw.o qlcnic_83xx_init.o
+	qlcnic_sysfs.o qlcnic_83xx_hw.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 4696e24..5c70729 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h
@@ -390,6 +390,7 @@ extern int qlcnic_use_msi;
 extern int qlcnic_use_msi_x;
 extern int qlcnic_auto_fw_reset;
 extern int qlcnic_load_fw_file;
+extern int qlcnic_config_npars;
 
 /* Number of status descriptors to handle per interrupt */
 #define MAX_STATUS_HANDLE	(64)
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.h b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.h
index 3a44424..5711504 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.h
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.h
@@ -578,4 +578,11 @@ 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 de595af..28295fd 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c
@@ -577,6 +577,52 @@ 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;
@@ -736,6 +782,8 @@ 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);
 	}
 
@@ -1820,7 +1868,10 @@ 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 0000000..d394471
--- /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;
+}
-- 
1.7.1

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