root/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_vnic.c
// SPDX-License-Identifier: GPL-2.0-only
/*
 * QLogic qlcnic NIC Driver
 * Copyright (c) 2009-2013 QLogic Corporation
 */

#include "qlcnic.h"
#include "qlcnic_hw.h"

static 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;
}

int qlcnic_83xx_set_vnic_opmode(struct qlcnic_adapter *adapter)
{
        u8 id;
        int ret = -EBUSY;
        u32 data = QLCNIC_MGMT_FUNC;
        struct qlcnic_hardware_context *ahw = adapter->ahw;

        if (qlcnic_83xx_lock_driver(adapter))
                return ret;

        id = ahw->pci_func;
        data = QLCRDX(adapter->ahw, QLC_83XX_DRV_OP_MODE);
        data = (data & ~QLC_83XX_SET_FUNC_OPMODE(0x3, id)) |
               QLC_83XX_SET_FUNC_OPMODE(QLCNIC_MGMT_FUNC, id);

        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)
{
        struct qlcnic_hardware_context *ahw = adapter->ahw;
        struct device *dev = &adapter->pdev->dev;
        struct qlcnic_npar_info *npar;
        int i, err = -EIO;

        qlcnic_83xx_get_minidump_template(adapter);

        if (!(adapter->flags & QLCNIC_ADAPTER_INITIALIZED)) {
                if (qlcnic_init_pci_info(adapter))
                        return err;

                npar = adapter->npars;

                for (i = 0; i < ahw->total_nic_func; i++, npar++) {
                        dev_info(dev, "id:%d active:%d type:%d port:%d min_bw:%d max_bw:%d mac_addr:%pM\n",
                                 npar->pci_func, npar->active, npar->type,
                                 npar->phy_port, npar->min_bw, npar->max_bw,
                                 npar->mac);
                }

                dev_info(dev, "Max functions = %d, active functions = %d\n",
                         ahw->max_pci_func, ahw->total_nic_func);

                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);
        ahw->msix_supported = qlcnic_use_msi_x ? 1 : 0;
        adapter->flags |= QLCNIC_ADAPTER_INITIALIZED;
        qlcnic_83xx_enable_vnic_mode(adapter, 1);

        dev_info(dev, "HAL Version: %d, Management function\n",
                 ahw->fw_hal_version);

        return 0;
}

static int qlcnic_83xx_init_privileged_vnic(struct qlcnic_adapter *adapter)
{
        int err = -EIO;

        qlcnic_83xx_get_minidump_template(adapter);
        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_config_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);
        switch (priv_level) {
        case 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;
                break;
        case 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;
                break;
        case 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;
                break;
        default:
                dev_err(&adapter->pdev->dev, "Invalid Virtual NIC opmode\n");
                return -EIO;
        }

        if (ahw->capabilities & QLC_83XX_ESWITCH_CAPABILITY) {
                adapter->flags |= QLCNIC_ESWITCH_ENABLED;
                if (adapter->drv_mac_learn)
                        adapter->rx_mac_learn = true;
        } else {
                adapter->flags &= ~QLCNIC_ESWITCH_ENABLED;
                adapter->rx_mac_learn = false;
        }

        ahw->idc.vnic_state = QLCNIC_DEV_NPAR_NON_OPER;
        ahw->idc.vnic_wait_limit = QLCNIC_DEV_NPAR_OPER_TIMEO;

        return 0;
}

int qlcnic_83xx_check_vnic_state(struct qlcnic_adapter *adapter)
{
        struct qlcnic_hardware_context *ahw = adapter->ahw;
        struct qlc_83xx_idc *idc = &ahw->idc;
        u32 state;

        state = QLCRDX(ahw, QLC_83XX_VNIC_STATE);
        while (state != QLCNIC_DEV_NPAR_OPER && idc->vnic_wait_limit) {
                idc->vnic_wait_limit--;
                msleep(1000);
                state = QLCRDX(ahw, QLC_83XX_VNIC_STATE);
        }

        if (state != QLCNIC_DEV_NPAR_OPER) {
                dev_err(&adapter->pdev->dev,
                        "vNIC mode not operational, state check timed out.\n");
                return -EIO;
        }

        return 0;
}

int qlcnic_83xx_set_port_eswitch_status(struct qlcnic_adapter *adapter,
                                        int func, int *port_id)
{
        struct qlcnic_info nic_info;
        int err = 0;

        memset(&nic_info, 0, sizeof(struct qlcnic_info));

        err = qlcnic_get_nic_info(adapter, &nic_info, func);
        if (err)
                return err;

        if (nic_info.capabilities & QLC_83XX_ESWITCH_CAPABILITY)
                *port_id = nic_info.phys_port;
        else
                err = -EIO;

        if (!err)
                adapter->eswitch[*port_id].flags |= QLCNIC_SWITCH_ENABLE;

        return err;
}