/**
 * Copyright (c) 2014 Redpine Signals Inc.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <linux/etherdevice.h>
#include <linux/timer.h>
#include "rsi_mgmt.h"
#include "rsi_common.h"
#include "rsi_ps.h"
#include "rsi_hal.h"

static struct bootup_params boot_params_20 = {
        .magic_number = cpu_to_le16(0x5aa5),
        .crystal_good_time = 0x0,
        .valid = cpu_to_le32(VALID_20),
        .reserved_for_valids = 0x0,
        .bootup_mode_info = 0x0,
        .digital_loop_back_params = 0x0,
        .rtls_timestamp_en = 0x0,
        .host_spi_intr_cfg = 0x0,
        .device_clk_info = {{
                .pll_config_g = {
                        .tapll_info_g = {
                                .pll_reg_1 = cpu_to_le16((TA_PLL_N_VAL_20 << 8)|
                                              (TA_PLL_M_VAL_20)),
                                .pll_reg_2 = cpu_to_le16(TA_PLL_P_VAL_20),
                        },
                        .pll960_info_g = {
                                .pll_reg_1 = cpu_to_le16((PLL960_P_VAL_20 << 8)|
                                                         (PLL960_N_VAL_20)),
                                .pll_reg_2 = cpu_to_le16(PLL960_M_VAL_20),
                                .pll_reg_3 = 0x0,
                        },
                        .afepll_info_g = {
                                .pll_reg = cpu_to_le16(0x9f0),
                        }
                },
                .switch_clk_g = {
                        .switch_clk_info = cpu_to_le16(0xb),
                        .bbp_lmac_clk_reg_val = cpu_to_le16(0x111),
                        .umac_clock_reg_config = cpu_to_le16(0x48),
                        .qspi_uart_clock_reg_config = cpu_to_le16(0x1211)
                }
        },
        {
                .pll_config_g = {
                        .tapll_info_g = {
                                .pll_reg_1 = cpu_to_le16((TA_PLL_N_VAL_20 << 8)|
                                                         (TA_PLL_M_VAL_20)),
                                .pll_reg_2 = cpu_to_le16(TA_PLL_P_VAL_20),
                        },
                        .pll960_info_g = {
                                .pll_reg_1 = cpu_to_le16((PLL960_P_VAL_20 << 8)|
                                                         (PLL960_N_VAL_20)),
                                .pll_reg_2 = cpu_to_le16(PLL960_M_VAL_20),
                                .pll_reg_3 = 0x0,
                        },
                        .afepll_info_g = {
                                .pll_reg = cpu_to_le16(0x9f0),
                        }
                },
                .switch_clk_g = {
                        .switch_clk_info = 0x0,
                        .bbp_lmac_clk_reg_val = 0x0,
                        .umac_clock_reg_config = 0x0,
                        .qspi_uart_clock_reg_config = 0x0
                }
        },
        {
                .pll_config_g = {
                        .tapll_info_g = {
                                .pll_reg_1 = cpu_to_le16((TA_PLL_N_VAL_20 << 8)|
                                                         (TA_PLL_M_VAL_20)),
                                .pll_reg_2 = cpu_to_le16(TA_PLL_P_VAL_20),
                        },
                        .pll960_info_g = {
                                .pll_reg_1 = cpu_to_le16((PLL960_P_VAL_20 << 8)|
                                                         (PLL960_N_VAL_20)),
                                .pll_reg_2 = cpu_to_le16(PLL960_M_VAL_20),
                                .pll_reg_3 = 0x0,
                        },
                        .afepll_info_g = {
                                .pll_reg = cpu_to_le16(0x9f0),
                        }
                },
                .switch_clk_g = {
                        .switch_clk_info = 0x0,
                        .bbp_lmac_clk_reg_val = 0x0,
                        .umac_clock_reg_config = 0x0,
                        .qspi_uart_clock_reg_config = 0x0
                }
        } },
        .buckboost_wakeup_cnt = 0x0,
        .pmu_wakeup_wait = 0x0,
        .shutdown_wait_time = 0x0,
        .pmu_slp_clkout_sel = 0x0,
        .wdt_prog_value = 0x0,
        .wdt_soc_rst_delay = 0x0,
        .dcdc_operation_mode = 0x0,
        .soc_reset_wait_cnt = 0x0,
        .waiting_time_at_fresh_sleep = 0x0,
        .max_threshold_to_avoid_sleep = 0x0,
        .beacon_resedue_alg_en = 0,
};

static struct bootup_params boot_params_40 = {
        .magic_number = cpu_to_le16(0x5aa5),
        .crystal_good_time = 0x0,
        .valid = cpu_to_le32(VALID_40),
        .reserved_for_valids = 0x0,
        .bootup_mode_info = 0x0,
        .digital_loop_back_params = 0x0,
        .rtls_timestamp_en = 0x0,
        .host_spi_intr_cfg = 0x0,
        .device_clk_info = {{
                .pll_config_g = {
                        .tapll_info_g = {
                                .pll_reg_1 = cpu_to_le16((TA_PLL_N_VAL_40 << 8)|
                                                         (TA_PLL_M_VAL_40)),
                                .pll_reg_2 = cpu_to_le16(TA_PLL_P_VAL_40),
                        },
                        .pll960_info_g = {
                                .pll_reg_1 = cpu_to_le16((PLL960_P_VAL_40 << 8)|
                                                         (PLL960_N_VAL_40)),
                                .pll_reg_2 = cpu_to_le16(PLL960_M_VAL_40),
                                .pll_reg_3 = 0x0,
                        },
                        .afepll_info_g = {
                                .pll_reg = cpu_to_le16(0x9f0),
                        }
                },
                .switch_clk_g = {
                        .switch_clk_info = cpu_to_le16(0x09),
                        .bbp_lmac_clk_reg_val = cpu_to_le16(0x1121),
                        .umac_clock_reg_config = cpu_to_le16(0x48),
                        .qspi_uart_clock_reg_config = cpu_to_le16(0x1211)
                }
        },
        {
                .pll_config_g = {
                        .tapll_info_g = {
                                .pll_reg_1 = cpu_to_le16((TA_PLL_N_VAL_40 << 8)|
                                                         (TA_PLL_M_VAL_40)),
                                .pll_reg_2 = cpu_to_le16(TA_PLL_P_VAL_40),
                        },
                        .pll960_info_g = {
                                .pll_reg_1 = cpu_to_le16((PLL960_P_VAL_40 << 8)|
                                                         (PLL960_N_VAL_40)),
                                .pll_reg_2 = cpu_to_le16(PLL960_M_VAL_40),
                                .pll_reg_3 = 0x0,
                        },
                        .afepll_info_g = {
                                .pll_reg = cpu_to_le16(0x9f0),
                        }
                },
                .switch_clk_g = {
                        .switch_clk_info = 0x0,
                        .bbp_lmac_clk_reg_val = 0x0,
                        .umac_clock_reg_config = 0x0,
                        .qspi_uart_clock_reg_config = 0x0
                }
        },
        {
                .pll_config_g = {
                        .tapll_info_g = {
                                .pll_reg_1 = cpu_to_le16((TA_PLL_N_VAL_40 << 8)|
                                                         (TA_PLL_M_VAL_40)),
                                .pll_reg_2 = cpu_to_le16(TA_PLL_P_VAL_40),
                        },
                        .pll960_info_g = {
                                .pll_reg_1 = cpu_to_le16((PLL960_P_VAL_40 << 8)|
                                                         (PLL960_N_VAL_40)),
                                .pll_reg_2 = cpu_to_le16(PLL960_M_VAL_40),
                                .pll_reg_3 = 0x0,
                        },
                        .afepll_info_g = {
                                .pll_reg = cpu_to_le16(0x9f0),
                        }
                },
                .switch_clk_g = {
                        .switch_clk_info = 0x0,
                        .bbp_lmac_clk_reg_val = 0x0,
                        .umac_clock_reg_config = 0x0,
                        .qspi_uart_clock_reg_config = 0x0
                }
        } },
        .buckboost_wakeup_cnt = 0x0,
        .pmu_wakeup_wait = 0x0,
        .shutdown_wait_time = 0x0,
        .pmu_slp_clkout_sel = 0x0,
        .wdt_prog_value = 0x0,
        .wdt_soc_rst_delay = 0x0,
        .dcdc_operation_mode = 0x0,
        .soc_reset_wait_cnt = 0x0,
        .waiting_time_at_fresh_sleep = 0x0,
        .max_threshold_to_avoid_sleep = 0x0,
        .beacon_resedue_alg_en = 0,
};

static struct bootup_params_9116 boot_params_9116_20 = {
        .magic_number = cpu_to_le16(LOADED_TOKEN),
        .valid = cpu_to_le32(VALID_20),
        .device_clk_info_9116 = {{
                .pll_config_9116_g = {
                        .pll_ctrl_set_reg = cpu_to_le16(0xd518),
                        .pll_ctrl_clr_reg = cpu_to_le16(0x2ae7),
                        .pll_modem_conig_reg = cpu_to_le16(0x2000),
                        .soc_clk_config_reg = cpu_to_le16(0x0c18),
                        .adc_dac_strm1_config_reg = cpu_to_le16(0x1100),
                        .adc_dac_strm2_config_reg = cpu_to_le16(0x6600),
                },
                .switch_clk_9116_g = {
                        .switch_clk_info =
                                cpu_to_le32((RSI_SWITCH_TASS_CLK |
                                            RSI_SWITCH_WLAN_BBP_LMAC_CLK_REG |
                                            RSI_SWITCH_BBP_LMAC_CLK_REG)),
                        .tass_clock_reg = cpu_to_le32(0x083C0503),
                        .wlan_bbp_lmac_clk_reg_val = cpu_to_le32(0x01042001),
                        .zbbt_bbp_lmac_clk_reg_val = cpu_to_le32(0x02010001),
                        .bbp_lmac_clk_en_val = cpu_to_le32(0x0000003b),
                }
        },
        },
};

static struct bootup_params_9116 boot_params_9116_40 = {
        .magic_number = cpu_to_le16(LOADED_TOKEN),
        .valid = cpu_to_le32(VALID_40),
        .device_clk_info_9116 = {{
                .pll_config_9116_g = {
                        .pll_ctrl_set_reg = cpu_to_le16(0xd518),
                        .pll_ctrl_clr_reg = cpu_to_le16(0x2ae7),
                        .pll_modem_conig_reg = cpu_to_le16(0x3000),
                        .soc_clk_config_reg = cpu_to_le16(0x0c18),
                        .adc_dac_strm1_config_reg = cpu_to_le16(0x0000),
                        .adc_dac_strm2_config_reg = cpu_to_le16(0x6600),
                },
                .switch_clk_9116_g = {
                        .switch_clk_info =
                                cpu_to_le32((RSI_SWITCH_TASS_CLK |
                                            RSI_SWITCH_WLAN_BBP_LMAC_CLK_REG |
                                            RSI_SWITCH_BBP_LMAC_CLK_REG |
                                            RSI_MODEM_CLK_160MHZ)),
                        .tass_clock_reg = cpu_to_le32(0x083C0503),
                        .wlan_bbp_lmac_clk_reg_val = cpu_to_le32(0x01042002),
                        .zbbt_bbp_lmac_clk_reg_val = cpu_to_le32(0x04010002),
                        .bbp_lmac_clk_en_val = cpu_to_le32(0x0000003b),
                }
        },
        },
};

static u16 mcs[] = {13, 26, 39, 52, 78, 104, 117, 130};

/**
 * rsi_set_default_parameters() - This function sets default parameters.
 * @common: Pointer to the driver private structure.
 *
 * Return: none
 */
static void rsi_set_default_parameters(struct rsi_common *common)
{
        common->band = NL80211_BAND_2GHZ;
        common->channel_width = BW_20MHZ;
        common->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
        common->channel = 1;
        common->min_rate = 0xffff;
        common->fsm_state = FSM_CARD_NOT_READY;
        common->iface_down = true;
        common->endpoint = EP_2GHZ_20MHZ;
        common->driver_mode = 1; /* End to end mode */
        common->lp_ps_handshake_mode = 0; /* Default no handShake mode*/
        common->ulp_ps_handshake_mode = 2; /* Default PKT handShake mode*/
        common->rf_power_val = 0; /* Default 1.9V */
        common->wlan_rf_power_mode = 0;
        common->obm_ant_sel_val = 2;
        common->beacon_interval = RSI_BEACON_INTERVAL;
        common->dtim_cnt = RSI_DTIM_COUNT;
        common->w9116_features.pll_mode = 0x0;
        common->w9116_features.rf_type = 1;
        common->w9116_features.wireless_mode = 0;
        common->w9116_features.enable_ppe = 0;
        common->w9116_features.afe_type = 1;
        common->w9116_features.dpd = 0;
        common->w9116_features.sifs_tx_enable = 0;
        common->w9116_features.ps_options = 0;
}

void init_bgscan_params(struct rsi_common *common)
{
        memset((u8 *)&common->bgscan, 0, sizeof(struct rsi_bgscan_params));
        common->bgscan.bgscan_threshold = RSI_DEF_BGSCAN_THRLD;
        common->bgscan.roam_threshold = RSI_DEF_ROAM_THRLD;
        common->bgscan.bgscan_periodicity = RSI_BGSCAN_PERIODICITY;
        common->bgscan.num_bgscan_channels = 0;
        common->bgscan.two_probe = 1;
        common->bgscan.active_scan_duration = RSI_ACTIVE_SCAN_TIME;
        common->bgscan.passive_scan_duration = RSI_PASSIVE_SCAN_TIME;
}

/**
 * rsi_set_contention_vals() - This function sets the contention values for the
 *                             backoff procedure.
 * @common: Pointer to the driver private structure.
 *
 * Return: None.
 */
static void rsi_set_contention_vals(struct rsi_common *common)
{
        u8 ii = 0;

        for (; ii < NUM_EDCA_QUEUES; ii++) {
                common->tx_qinfo[ii].wme_params =
                        (((common->edca_params[ii].cw_min / 2) +
                          (common->edca_params[ii].aifs)) *
                          WMM_SHORT_SLOT_TIME + SIFS_DURATION);
                common->tx_qinfo[ii].weight = common->tx_qinfo[ii].wme_params;
                common->tx_qinfo[ii].pkt_contended = 0;
        }
}

/**
 * rsi_send_internal_mgmt_frame() - This function sends management frames to
 *                                  firmware.Also schedules packet to queue
 *                                  for transmission.
 * @common: Pointer to the driver private structure.
 * @skb: Pointer to the socket buffer structure.
 *
 * Return: 0 on success, -1 on failure.
 */
static int rsi_send_internal_mgmt_frame(struct rsi_common *common,
                                        struct sk_buff *skb)
{
        struct skb_info *tx_params;
        struct rsi_cmd_desc *desc;

        if (skb == NULL) {
                rsi_dbg(ERR_ZONE, "%s: Unable to allocate skb\n", __func__);
                return -ENOMEM;
        }
        desc = (struct rsi_cmd_desc *)skb->data;
        desc->desc_dword0.len_qno |= cpu_to_le16(DESC_IMMEDIATE_WAKEUP);
        skb->priority = MGMT_SOFT_Q;
        tx_params = (struct skb_info *)&IEEE80211_SKB_CB(skb)->driver_data;
        tx_params->flags |= INTERNAL_MGMT_PKT;
        skb_queue_tail(&common->tx_queue[MGMT_SOFT_Q], skb);
        rsi_set_event(&common->tx_thread.event);
        return 0;
}

/**
 * rsi_load_radio_caps() - This function is used to send radio capabilities
 *                         values to firmware.
 * @common: Pointer to the driver private structure.
 *
 * Return: 0 on success, corresponding negative error code on failure.
 */
static int rsi_load_radio_caps(struct rsi_common *common)
{
        struct rsi_radio_caps *radio_caps;
        struct rsi_hw *adapter = common->priv;
        u16 inx = 0;
        u8 ii;
        u8 radio_id = 0;
        u16 gc[20] = {0xf0, 0xf0, 0xf0, 0xf0,
                      0xf0, 0xf0, 0xf0, 0xf0,
                      0xf0, 0xf0, 0xf0, 0xf0,
                      0xf0, 0xf0, 0xf0, 0xf0,
                      0xf0, 0xf0, 0xf0, 0xf0};
        struct sk_buff *skb;
        u16 frame_len = sizeof(struct rsi_radio_caps);

        rsi_dbg(INFO_ZONE, "%s: Sending rate symbol req frame\n", __func__);

        skb = dev_alloc_skb(frame_len);

        if (!skb) {
                rsi_dbg(ERR_ZONE, "%s: Failed in allocation of skb\n",
                        __func__);
                return -ENOMEM;
        }

        memset(skb->data, 0, frame_len);
        radio_caps = (struct rsi_radio_caps *)skb->data;

        radio_caps->desc_dword0.frame_type = RADIO_CAPABILITIES;
        radio_caps->channel_num = common->channel;
        radio_caps->rf_model = RSI_RF_TYPE;

        radio_caps->radio_cfg_info = RSI_LMAC_CLOCK_80MHZ;
        if (common->channel_width == BW_40MHZ) {
                radio_caps->radio_cfg_info |= RSI_ENABLE_40MHZ;

                if (common->fsm_state == FSM_MAC_INIT_DONE) {
                        struct ieee80211_hw *hw = adapter->hw;
                        struct ieee80211_conf *conf = &hw->conf;

                        if (conf_is_ht40_plus(conf)) {
                                radio_caps->ppe_ack_rate =
                                        cpu_to_le16(LOWER_20_ENABLE |
                                                    (LOWER_20_ENABLE >> 12));
                        } else if (conf_is_ht40_minus(conf)) {
                                radio_caps->ppe_ack_rate =
                                        cpu_to_le16(UPPER_20_ENABLE |
                                                    (UPPER_20_ENABLE >> 12));
                        } else {
                                radio_caps->ppe_ack_rate =
                                        cpu_to_le16((BW_40MHZ << 12) |
                                                    FULL40M_ENABLE);
                        }
                }
        }
        radio_caps->radio_info |= radio_id;

        if (adapter->device_model == RSI_DEV_9116 &&
            common->channel_width == BW_20MHZ)
                radio_caps->radio_cfg_info &= ~0x3;

        radio_caps->sifs_tx_11n = cpu_to_le16(SIFS_TX_11N_VALUE);
        radio_caps->sifs_tx_11b = cpu_to_le16(SIFS_TX_11B_VALUE);
        radio_caps->slot_rx_11n = cpu_to_le16(SHORT_SLOT_VALUE);
        radio_caps->ofdm_ack_tout = cpu_to_le16(OFDM_ACK_TOUT_VALUE);
        radio_caps->cck_ack_tout = cpu_to_le16(CCK_ACK_TOUT_VALUE);
        radio_caps->preamble_type = cpu_to_le16(LONG_PREAMBLE);

        for (ii = 0; ii < MAX_HW_QUEUES; ii++) {
                radio_caps->qos_params[ii].cont_win_min_q = cpu_to_le16(3);
                radio_caps->qos_params[ii].cont_win_max_q = cpu_to_le16(0x3f);
                radio_caps->qos_params[ii].aifsn_val_q = cpu_to_le16(2);
                radio_caps->qos_params[ii].txop_q = 0;
        }

        for (ii = 0; ii < NUM_EDCA_QUEUES; ii++) {
                if (common->edca_params[ii].cw_max > 0) {
                        radio_caps->qos_params[ii].cont_win_min_q =
                                cpu_to_le16(common->edca_params[ii].cw_min);
                        radio_caps->qos_params[ii].cont_win_max_q =
                                cpu_to_le16(common->edca_params[ii].cw_max);
                        radio_caps->qos_params[ii].aifsn_val_q =
                                cpu_to_le16(common->edca_params[ii].aifs << 8);
                        radio_caps->qos_params[ii].txop_q =
                                cpu_to_le16(common->edca_params[ii].txop);
                }
        }

        radio_caps->qos_params[BROADCAST_HW_Q].txop_q = cpu_to_le16(0xffff);
        radio_caps->qos_params[MGMT_HW_Q].txop_q = 0;
        radio_caps->qos_params[BEACON_HW_Q].txop_q = cpu_to_le16(0xffff);

        memcpy(&common->rate_pwr[0], &gc[0], 40);
        for (ii = 0; ii < 20; ii++)
                radio_caps->gcpd_per_rate[inx++] =
                        cpu_to_le16(common->rate_pwr[ii]  & 0x00FF);

        rsi_set_len_qno(&radio_caps->desc_dword0.len_qno,
                        (frame_len - FRAME_DESC_SZ), RSI_WIFI_MGMT_Q);

        skb_put(skb, frame_len);

        return rsi_send_internal_mgmt_frame(common, skb);
}

/**
 * rsi_mgmt_pkt_to_core() - This function is the entry point for Mgmt module.
 * @common: Pointer to the driver private structure.
 * @msg: Pointer to received packet.
 * @msg_len: Length of the received packet.
 * @type: Type of received packet.
 *
 * Return: 0 on success, -1 on failure.
 */
static int rsi_mgmt_pkt_to_core(struct rsi_common *common,
                                u8 *msg,
                                s32 msg_len)
{
        struct rsi_hw *adapter = common->priv;
        struct ieee80211_tx_info *info;
        struct skb_info *rx_params;
        u8 pad_bytes = msg[4];
        struct sk_buff *skb;

        if (!adapter->sc_nvifs)
                return -ENOLINK;

        msg_len -= pad_bytes;
        if (msg_len <= 0) {
                rsi_dbg(MGMT_RX_ZONE,
                        "%s: Invalid rx msg of len = %d\n",
                        __func__, msg_len);
                return -EINVAL;
        }

        skb = dev_alloc_skb(msg_len);
        if (!skb)
                return -ENOMEM;

        skb_put_data(skb,
                     (u8 *)(msg + FRAME_DESC_SZ + pad_bytes),
                     msg_len);

        info = IEEE80211_SKB_CB(skb);
        rx_params = (struct skb_info *)info->driver_data;
        rx_params->rssi = rsi_get_rssi(msg);
        rx_params->channel = rsi_get_channel(msg);
        rsi_indicate_pkt_to_os(common, skb);

        return 0;
}

/**
 * rsi_hal_send_sta_notify_frame() - This function sends the station notify
 *                                   frame to firmware.
 * @common: Pointer to the driver private structure.
 * @opmode: Operating mode of device.
 * @notify_event: Notification about station connection.
 * @bssid: bssid.
 * @qos_enable: Qos is enabled.
 * @aid: Aid (unique for all STA).
 *
 * Return: status: 0 on success, corresponding negative error code on failure.
 */
int rsi_hal_send_sta_notify_frame(struct rsi_common *common, enum opmode opmode,
                                  u8 notify_event, const unsigned char *bssid,
                                  u8 qos_enable, u16 aid, u16 sta_id,
                                  struct ieee80211_vif *vif)
{
        struct sk_buff *skb = NULL;
        struct rsi_peer_notify *peer_notify;
        u16 vap_id = ((struct vif_priv *)vif->drv_priv)->vap_id;
        int status;
        u16 frame_len = sizeof(struct rsi_peer_notify);

        rsi_dbg(MGMT_TX_ZONE, "%s: Sending sta notify frame\n", __func__);

        skb = dev_alloc_skb(frame_len);

        if (!skb) {
                rsi_dbg(ERR_ZONE, "%s: Failed in allocation of skb\n",
                        __func__);
                return -ENOMEM;
        }

        memset(skb->data, 0, frame_len);
        peer_notify = (struct rsi_peer_notify *)skb->data;

        if (opmode == RSI_OPMODE_STA)
                peer_notify->command = cpu_to_le16(PEER_TYPE_AP << 1);
        else if (opmode == RSI_OPMODE_AP)
                peer_notify->command = cpu_to_le16(PEER_TYPE_STA << 1);

        switch (notify_event) {
        case STA_CONNECTED:
                peer_notify->command |= cpu_to_le16(RSI_ADD_PEER);
                break;
        case STA_DISCONNECTED:
                peer_notify->command |= cpu_to_le16(RSI_DELETE_PEER);
                break;
        default:
                break;
        }

        peer_notify->command |= cpu_to_le16((aid & 0xfff) << 4);
        ether_addr_copy(peer_notify->mac_addr, bssid);
        peer_notify->mpdu_density = cpu_to_le16(RSI_MPDU_DENSITY);
        peer_notify->sta_flags = cpu_to_le32((qos_enable) ? 1 : 0);

        rsi_set_len_qno(&peer_notify->desc.desc_dword0.len_qno,
                        (frame_len - FRAME_DESC_SZ),
                        RSI_WIFI_MGMT_Q);
        peer_notify->desc.desc_dword0.frame_type = PEER_NOTIFY;
        peer_notify->desc.desc_dword3.qid_tid = sta_id;
        peer_notify->desc.desc_dword3.sta_id = vap_id;

        skb_put(skb, frame_len);

        status = rsi_send_internal_mgmt_frame(common, skb);

        if ((vif->type == NL80211_IFTYPE_STATION) &&
            (!status && qos_enable)) {
                rsi_set_contention_vals(common);
                status = rsi_load_radio_caps(common);
        }
        return status;
}

/**
 * rsi_send_aggregation_params_frame() - This function sends the ampdu
 *                                       indication frame to firmware.
 * @common: Pointer to the driver private structure.
 * @tid: traffic identifier.
 * @ssn: ssn.
 * @buf_size: buffer size.
 * @event: notification about station connection.
 *
 * Return: 0 on success, corresponding negative error code on failure.
 */
int rsi_send_aggregation_params_frame(struct rsi_common *common,
                                      u16 tid,
                                      u16 ssn,
                                      u8 buf_size,
                                      u8 event,
                                      u8 sta_id)
{
        struct sk_buff *skb = NULL;
        struct rsi_aggr_params *aggr_params;
        u16 frame_len = sizeof(struct rsi_aggr_params);

        skb = dev_alloc_skb(frame_len);

        if (!skb) {
                rsi_dbg(ERR_ZONE, "%s: Failed in allocation of skb\n",
                        __func__);
                return -ENOMEM;
        }

        memset(skb->data, 0, frame_len);
        aggr_params = (struct rsi_aggr_params *)skb->data;

        rsi_dbg(MGMT_TX_ZONE, "%s: Sending AMPDU indication frame\n", __func__);

        rsi_set_len_qno(&aggr_params->desc_dword0.len_qno, 0, RSI_WIFI_MGMT_Q);
        aggr_params->desc_dword0.frame_type = AMPDU_IND;

        aggr_params->aggr_params = tid & RSI_AGGR_PARAMS_TID_MASK;
        aggr_params->peer_id = sta_id;
        if (event == STA_TX_ADDBA_DONE) {
                aggr_params->seq_start = cpu_to_le16(ssn);
                aggr_params->baw_size = cpu_to_le16(buf_size);
                aggr_params->aggr_params |= RSI_AGGR_PARAMS_START;
        } else if (event == STA_RX_ADDBA_DONE) {
                aggr_params->seq_start = cpu_to_le16(ssn);
                aggr_params->aggr_params |= (RSI_AGGR_PARAMS_START |
                                             RSI_AGGR_PARAMS_RX_AGGR);
        } else if (event == STA_RX_DELBA) {
                aggr_params->aggr_params |= RSI_AGGR_PARAMS_RX_AGGR;
        }

        skb_put(skb, frame_len);

        return rsi_send_internal_mgmt_frame(common, skb);
}

/**
 * rsi_program_bb_rf() - This function starts base band and RF programming.
 *                       This is called after initial configurations are done.
 * @common: Pointer to the driver private structure.
 *
 * Return: 0 on success, corresponding negative error code on failure.
 */
static int rsi_program_bb_rf(struct rsi_common *common)
{
        struct sk_buff *skb;
        struct rsi_bb_rf_prog *bb_rf_prog;
        u16 frame_len = sizeof(struct rsi_bb_rf_prog);

        rsi_dbg(MGMT_TX_ZONE, "%s: Sending program BB/RF frame\n", __func__);

        skb = dev_alloc_skb(frame_len);
        if (!skb) {
                rsi_dbg(ERR_ZONE, "%s: Failed in allocation of skb\n",
                        __func__);
                return -ENOMEM;
        }

        memset(skb->data, 0, frame_len);
        bb_rf_prog = (struct rsi_bb_rf_prog *)skb->data;

        rsi_set_len_qno(&bb_rf_prog->desc_dword0.len_qno, 0, RSI_WIFI_MGMT_Q);
        bb_rf_prog->desc_dword0.frame_type = BBP_PROG_IN_TA;
        bb_rf_prog->endpoint = common->endpoint;
        bb_rf_prog->rf_power_mode = common->wlan_rf_power_mode;

        if (common->rf_reset) {
                bb_rf_prog->flags =  cpu_to_le16(RF_RESET_ENABLE);
                rsi_dbg(MGMT_TX_ZONE, "%s: ===> RF RESET REQUEST SENT <===\n",
                        __func__);
                common->rf_reset = 0;
        }
        common->bb_rf_prog_count = 1;
        bb_rf_prog->flags |= cpu_to_le16(PUT_BBP_RESET | BBP_REG_WRITE |
                                         (RSI_RF_TYPE << 4));
        skb_put(skb, frame_len);

        return rsi_send_internal_mgmt_frame(common, skb);
}

/**
 * rsi_set_vap_capabilities() - This function send vap capability to firmware.
 * @common: Pointer to the driver private structure.
 * @opmode: Operating mode of device.
 *
 * Return: 0 on success, corresponding negative error code on failure.
 */
int rsi_set_vap_capabilities(struct rsi_common *common,
                             enum opmode mode,
                             u8 *mac_addr,
                             u8 vap_id,
                             u8 vap_status)
{
        struct sk_buff *skb = NULL;
        struct rsi_vap_caps *vap_caps;
        struct rsi_hw *adapter = common->priv;
        struct ieee80211_hw *hw = adapter->hw;
        struct ieee80211_conf *conf = &hw->conf;
        u16 frame_len = sizeof(struct rsi_vap_caps);

        rsi_dbg(MGMT_TX_ZONE, "%s: Sending VAP capabilities frame\n", __func__);

        skb = dev_alloc_skb(frame_len);
        if (!skb) {
                rsi_dbg(ERR_ZONE, "%s: Failed in allocation of skb\n",
                        __func__);
                return -ENOMEM;
        }

        memset(skb->data, 0, frame_len);
        vap_caps = (struct rsi_vap_caps *)skb->data;

        rsi_set_len_qno(&vap_caps->desc_dword0.len_qno,
                        (frame_len - FRAME_DESC_SZ), RSI_WIFI_MGMT_Q);
        vap_caps->desc_dword0.frame_type = VAP_CAPABILITIES;
        vap_caps->status = vap_status;
        vap_caps->vif_type = mode;
        vap_caps->channel_bw = common->channel_width;
        vap_caps->vap_id = vap_id;
        vap_caps->radioid_macid = ((common->mac_id & 0xf) << 4) |
                                   (common->radio_id & 0xf);

        memcpy(vap_caps->mac_addr, mac_addr, IEEE80211_ADDR_LEN);
        vap_caps->keep_alive_period = cpu_to_le16(90);
        vap_caps->frag_threshold = cpu_to_le16(IEEE80211_MAX_FRAG_THRESHOLD);

        vap_caps->rts_threshold = cpu_to_le16(common->rts_threshold);

        if (common->band == NL80211_BAND_5GHZ) {
                vap_caps->default_ctrl_rate = cpu_to_le16(RSI_RATE_6);
                vap_caps->default_mgmt_rate = cpu_to_le32(RSI_RATE_6);
        } else {
                vap_caps->default_ctrl_rate = cpu_to_le16(RSI_RATE_1);
                vap_caps->default_mgmt_rate = cpu_to_le32(RSI_RATE_1);
        }
        if (conf_is_ht40(conf)) {
                if (conf_is_ht40_minus(conf))
                        vap_caps->ctrl_rate_flags =
                                cpu_to_le16(UPPER_20_ENABLE);
                else if (conf_is_ht40_plus(conf))
                        vap_caps->ctrl_rate_flags =
                                cpu_to_le16(LOWER_20_ENABLE);
                else
                        vap_caps->ctrl_rate_flags =
                                cpu_to_le16(FULL40M_ENABLE);
        }

        vap_caps->default_data_rate = 0;
        vap_caps->beacon_interval = cpu_to_le16(common->beacon_interval);
        vap_caps->dtim_period = cpu_to_le16(common->dtim_cnt);

        skb_put(skb, frame_len);

        return rsi_send_internal_mgmt_frame(common, skb);
}

/**
 * rsi_hal_load_key() - This function is used to load keys within the firmware.
 * @common: Pointer to the driver private structure.
 * @data: Pointer to the key data.
 * @key_len: Key length to be loaded.
 * @key_type: Type of key: GROUP/PAIRWISE.
 * @key_id: Key index.
 * @cipher: Type of cipher used.
 *
 * Return: 0 on success, -1 on failure.
 */
int rsi_hal_load_key(struct rsi_common *common,
                     u8 *data,
                     u16 key_len,
                     u8 key_type,
                     u8 key_id,
                     u32 cipher,
                     s16 sta_id,
                     struct ieee80211_vif *vif)
{
        struct sk_buff *skb = NULL;
        struct rsi_set_key *set_key;
        u16 key_descriptor = 0;
        u16 frame_len = sizeof(struct rsi_set_key);

        rsi_dbg(MGMT_TX_ZONE, "%s: Sending load key frame\n", __func__);

        skb = dev_alloc_skb(frame_len);
        if (!skb) {
                rsi_dbg(ERR_ZONE, "%s: Failed in allocation of skb\n",
                        __func__);
                return -ENOMEM;
        }

        memset(skb->data, 0, frame_len);
        set_key = (struct rsi_set_key *)skb->data;

        if (key_type == RSI_GROUP_KEY) {
                key_descriptor = RSI_KEY_TYPE_BROADCAST;
                if (vif->type == NL80211_IFTYPE_AP)
                        key_descriptor |= RSI_KEY_MODE_AP;
        }
        if ((cipher == WLAN_CIPHER_SUITE_WEP40) ||
            (cipher == WLAN_CIPHER_SUITE_WEP104)) {
                key_id = 0;
                key_descriptor |= RSI_WEP_KEY;
                if (key_len >= 13)
                        key_descriptor |= RSI_WEP_KEY_104;
        } else if (cipher != KEY_TYPE_CLEAR) {
                key_descriptor |= RSI_CIPHER_WPA;
                if (cipher == WLAN_CIPHER_SUITE_TKIP)
                        key_descriptor |= RSI_CIPHER_TKIP;
        }
        key_descriptor |= RSI_PROTECT_DATA_FRAMES;
        key_descriptor |= (key_id << RSI_KEY_ID_OFFSET);

        rsi_set_len_qno(&set_key->desc_dword0.len_qno,
                        (frame_len - FRAME_DESC_SZ), RSI_WIFI_MGMT_Q);
        set_key->desc_dword0.frame_type = SET_KEY_REQ;
        set_key->key_desc = cpu_to_le16(key_descriptor);
        set_key->sta_id = sta_id;

        if (data) {
                if ((cipher == WLAN_CIPHER_SUITE_WEP40) ||
                    (cipher == WLAN_CIPHER_SUITE_WEP104)) {
                        memcpy(&set_key->key[key_id][1], data, key_len * 2);
                } else {
                        memcpy(&set_key->key[0][0], data, key_len);
                }
                memcpy(set_key->tx_mic_key, &data[16], 8);
                memcpy(set_key->rx_mic_key, &data[24], 8);
        } else {
                memset(&set_key[FRAME_DESC_SZ], 0, frame_len - FRAME_DESC_SZ);
        }

        skb_put(skb, frame_len);

        return rsi_send_internal_mgmt_frame(common, skb);
}

/*
 * This function sends the common device configuration parameters to device.
 * This frame includes the useful information to make device works on
 * specific operating mode.
 */
static int rsi_send_common_dev_params(struct rsi_common *common)
{
        struct sk_buff *skb;
        u16 frame_len;
        struct rsi_config_vals *dev_cfgs;

        frame_len = sizeof(struct rsi_config_vals);

        rsi_dbg(MGMT_TX_ZONE, "Sending common device config params\n");
        skb = dev_alloc_skb(frame_len);
        if (!skb) {
                rsi_dbg(ERR_ZONE, "%s: Unable to allocate skb\n", __func__);
                return -ENOMEM;
        }

        memset(skb->data, 0, frame_len);

        dev_cfgs = (struct rsi_config_vals *)skb->data;
        memset(dev_cfgs, 0, (sizeof(struct rsi_config_vals)));

        rsi_set_len_qno(&dev_cfgs->len_qno, (frame_len - FRAME_DESC_SZ),
                        RSI_COEX_Q);
        dev_cfgs->pkt_type = COMMON_DEV_CONFIG;

        dev_cfgs->lp_ps_handshake = common->lp_ps_handshake_mode;
        dev_cfgs->ulp_ps_handshake = common->ulp_ps_handshake_mode;

        dev_cfgs->unused_ulp_gpio = RSI_UNUSED_ULP_GPIO_BITMAP;
        dev_cfgs->unused_soc_gpio_bitmap =
                                cpu_to_le32(RSI_UNUSED_SOC_GPIO_BITMAP);

        dev_cfgs->opermode = common->oper_mode;
        dev_cfgs->wlan_rf_pwr_mode = common->wlan_rf_power_mode;
        dev_cfgs->driver_mode = common->driver_mode;
        dev_cfgs->region_code = NL80211_DFS_FCC;
        dev_cfgs->antenna_sel_val = common->obm_ant_sel_val;

        skb_put(skb, frame_len);

        return rsi_send_internal_mgmt_frame(common, skb);
}

/*
 * rsi_load_bootup_params() - This function send bootup params to the firmware.
 * @common: Pointer to the driver private structure.
 *
 * Return: 0 on success, corresponding error code on failure.
 */
static int rsi_load_bootup_params(struct rsi_common *common)
{
        struct sk_buff *skb;
        struct rsi_boot_params *boot_params;

        rsi_dbg(MGMT_TX_ZONE, "%s: Sending boot params frame\n", __func__);
        skb = dev_alloc_skb(sizeof(struct rsi_boot_params));
        if (!skb) {
                rsi_dbg(ERR_ZONE, "%s: Failed in allocation of skb\n",
                        __func__);
                return -ENOMEM;
        }

        memset(skb->data, 0, sizeof(struct rsi_boot_params));
        boot_params = (struct rsi_boot_params *)skb->data;

        rsi_dbg(MGMT_TX_ZONE, "%s:\n", __func__);

        if (common->channel_width == BW_40MHZ) {
                memcpy(&boot_params->bootup_params,
                       &boot_params_40,
                       sizeof(struct bootup_params));
                rsi_dbg(MGMT_TX_ZONE, "%s: Packet 40MHZ <=== %d\n", __func__,
                        UMAC_CLK_40BW);
                boot_params->desc_word[7] = cpu_to_le16(UMAC_CLK_40BW);
        } else {
                memcpy(&boot_params->bootup_params,
                       &boot_params_20,
                       sizeof(struct bootup_params));
                if (boot_params_20.valid != cpu_to_le32(VALID_20)) {
                        boot_params->desc_word[7] = cpu_to_le16(UMAC_CLK_20BW);
                        rsi_dbg(MGMT_TX_ZONE,
                                "%s: Packet 20MHZ <=== %d\n", __func__,
                                UMAC_CLK_20BW);
                } else {
                        boot_params->desc_word[7] = cpu_to_le16(UMAC_CLK_40MHZ);
                        rsi_dbg(MGMT_TX_ZONE,
                                "%s: Packet 20MHZ <=== %d\n", __func__,
                                UMAC_CLK_40MHZ);
                }
        }

        /**
         * Bit{0:11} indicates length of the Packet
         * Bit{12:15} indicates host queue number
         */
        boot_params->desc_word[0] = cpu_to_le16(sizeof(struct bootup_params) |
                                    (RSI_WIFI_MGMT_Q << 12));
        boot_params->desc_word[1] = cpu_to_le16(BOOTUP_PARAMS_REQUEST);

        skb_put(skb, sizeof(struct rsi_boot_params));

        return rsi_send_internal_mgmt_frame(common, skb);
}

static int rsi_load_9116_bootup_params(struct rsi_common *common)
{
        struct sk_buff *skb;
        struct rsi_boot_params_9116 *boot_params;

        rsi_dbg(MGMT_TX_ZONE, "%s: Sending boot params frame\n", __func__);

        skb = dev_alloc_skb(sizeof(struct rsi_boot_params_9116));
        if (!skb)
                return -ENOMEM;
        memset(skb->data, 0, sizeof(struct rsi_boot_params));
        boot_params = (struct rsi_boot_params_9116 *)skb->data;

        if (common->channel_width == BW_40MHZ) {
                memcpy(&boot_params->bootup_params,
                       &boot_params_9116_40,
                       sizeof(struct bootup_params_9116));
                rsi_dbg(MGMT_TX_ZONE, "%s: Packet 40MHZ <=== %d\n", __func__,
                        UMAC_CLK_40BW);
                boot_params->umac_clk = cpu_to_le16(UMAC_CLK_40BW);
        } else {
                memcpy(&boot_params->bootup_params,
                       &boot_params_9116_20,
                       sizeof(struct bootup_params_9116));
                if (boot_params_20.valid != cpu_to_le32(VALID_20)) {
                        boot_params->umac_clk = cpu_to_le16(UMAC_CLK_20BW);
                        rsi_dbg(MGMT_TX_ZONE,
                                "%s: Packet 20MHZ <=== %d\n", __func__,
                                UMAC_CLK_20BW);
                } else {
                        boot_params->umac_clk = cpu_to_le16(UMAC_CLK_40MHZ);
                        rsi_dbg(MGMT_TX_ZONE,
                                "%s: Packet 20MHZ <=== %d\n", __func__,
                                UMAC_CLK_40MHZ);
                }
        }
        rsi_set_len_qno(&boot_params->desc_dword0.len_qno,
                        sizeof(struct bootup_params_9116), RSI_WIFI_MGMT_Q);

        boot_params->desc_dword0.frame_type = BOOTUP_PARAMS_REQUEST;
        skb_put(skb, sizeof(struct rsi_boot_params_9116));

        return rsi_send_internal_mgmt_frame(common, skb);
}

/**
 * rsi_send_reset_mac() - This function prepares reset MAC request and sends an
 *                        internal management frame to indicate it to firmware.
 * @common: Pointer to the driver private structure.
 *
 * Return: 0 on success, corresponding error code on failure.
 */
static int rsi_send_reset_mac(struct rsi_common *common)
{
        struct sk_buff *skb;
        struct rsi_mac_frame *mgmt_frame;

        rsi_dbg(MGMT_TX_ZONE, "%s: Sending reset MAC frame\n", __func__);

        skb = dev_alloc_skb(FRAME_DESC_SZ);
        if (!skb) {
                rsi_dbg(ERR_ZONE, "%s: Failed in allocation of skb\n",
                        __func__);
                return -ENOMEM;
        }

        memset(skb->data, 0, FRAME_DESC_SZ);
        mgmt_frame = (struct rsi_mac_frame *)skb->data;

        mgmt_frame->desc_word[0] = cpu_to_le16(RSI_WIFI_MGMT_Q << 12);
        mgmt_frame->desc_word[1] = cpu_to_le16(RESET_MAC_REQ);
        mgmt_frame->desc_word[4] = cpu_to_le16(RETRY_COUNT << 8);

#define RSI_9116_DEF_TA_AGGR    3
        if (common->priv->device_model == RSI_DEV_9116)
                mgmt_frame->desc_word[3] |=
                        cpu_to_le16(RSI_9116_DEF_TA_AGGR << 8);

        skb_put(skb, FRAME_DESC_SZ);

        return rsi_send_internal_mgmt_frame(common, skb);
}

/**
 * rsi_band_check() - This function programs the band
 * @common: Pointer to the driver private structure.
 *
 * Return: 0 on success, corresponding error code on failure.
 */
int rsi_band_check(struct rsi_common *common,
                   struct ieee80211_channel *curchan)
{
        struct rsi_hw *adapter = common->priv;
        struct ieee80211_hw *hw = adapter->hw;
        u8 prev_bw = common->channel_width;
        u8 prev_ep = common->endpoint;
        int status = 0;

        if (common->band != curchan->band) {
                common->rf_reset = 1;
                common->band = curchan->band;
        }

        if ((hw->conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) ||
            (hw->conf.chandef.width == NL80211_CHAN_WIDTH_20))
                common->channel_width = BW_20MHZ;
        else
                common->channel_width = BW_40MHZ;

        if (common->band == NL80211_BAND_2GHZ) {
                if (common->channel_width)
                        common->endpoint = EP_2GHZ_40MHZ;
                else
                        common->endpoint = EP_2GHZ_20MHZ;
        } else {
                if (common->channel_width)
                        common->endpoint = EP_5GHZ_40MHZ;
                else
                        common->endpoint = EP_5GHZ_20MHZ;
        }

        if (common->endpoint != prev_ep) {
                status = rsi_program_bb_rf(common);
                if (status)
                        return status;
        }

        if (common->channel_width != prev_bw) {
                if (adapter->device_model == RSI_DEV_9116)
                        status = rsi_load_9116_bootup_params(common);
                else
                        status = rsi_load_bootup_params(common);
                if (status)
                        return status;

                status = rsi_load_radio_caps(common);
                if (status)
                        return status;
        }

        return status;
}

/**
 * rsi_set_channel() - This function programs the channel.
 * @common: Pointer to the driver private structure.
 * @channel: Channel value to be set.
 *
 * Return: 0 on success, corresponding error code on failure.
 */
int rsi_set_channel(struct rsi_common *common,
                    struct ieee80211_channel *channel)
{
        struct sk_buff *skb = NULL;
        struct rsi_chan_config *chan_cfg;
        u16 frame_len = sizeof(struct rsi_chan_config);

        rsi_dbg(MGMT_TX_ZONE,
                "%s: Sending scan req frame\n", __func__);

        skb = dev_alloc_skb(frame_len);
        if (!skb) {
                rsi_dbg(ERR_ZONE, "%s: Failed in allocation of skb\n",
                        __func__);
                return -ENOMEM;
        }

        if (!channel) {
                dev_kfree_skb(skb);
                return 0;
        }
        memset(skb->data, 0, frame_len);
        chan_cfg = (struct rsi_chan_config *)skb->data;

        rsi_set_len_qno(&chan_cfg->desc_dword0.len_qno, 0, RSI_WIFI_MGMT_Q);
        chan_cfg->desc_dword0.frame_type = SCAN_REQUEST;
        chan_cfg->channel_number = channel->hw_value;
        chan_cfg->antenna_gain_offset_2g = channel->max_antenna_gain;
        chan_cfg->antenna_gain_offset_5g = channel->max_antenna_gain;
        chan_cfg->region_rftype = (RSI_RF_TYPE & 0xf) << 4;

        if ((channel->flags & IEEE80211_CHAN_NO_IR) ||
            (channel->flags & IEEE80211_CHAN_RADAR)) {
                chan_cfg->antenna_gain_offset_2g |= RSI_CHAN_RADAR;
        } else {
                if (common->tx_power < channel->max_power)
                        chan_cfg->tx_power = cpu_to_le16(common->tx_power);
                else
                        chan_cfg->tx_power = cpu_to_le16(channel->max_power);
        }
        chan_cfg->region_rftype |= (common->priv->dfs_region & 0xf);

        if (common->channel_width == BW_40MHZ)
                chan_cfg->channel_width = 0x1;

        common->channel = channel->hw_value;

        skb_put(skb, frame_len);

        return rsi_send_internal_mgmt_frame(common, skb);
}

/**
 * rsi_send_radio_params_update() - This function sends the radio
 *                              parameters update to device
 * @common: Pointer to the driver private structure.
 * @channel: Channel value to be set.
 *
 * Return: 0 on success, corresponding error code on failure.
 */
int rsi_send_radio_params_update(struct rsi_common *common)
{
        struct rsi_mac_frame *cmd_frame;
        struct sk_buff *skb = NULL;

        rsi_dbg(MGMT_TX_ZONE,
                "%s: Sending Radio Params update frame\n", __func__);

        skb = dev_alloc_skb(FRAME_DESC_SZ);
        if (!skb) {
                rsi_dbg(ERR_ZONE, "%s: Failed in allocation of skb\n",
                        __func__);
                return -ENOMEM;
        }

        memset(skb->data, 0, FRAME_DESC_SZ);
        cmd_frame = (struct rsi_mac_frame *)skb->data;

        cmd_frame->desc_word[0] = cpu_to_le16(RSI_WIFI_MGMT_Q << 12);
        cmd_frame->desc_word[1] = cpu_to_le16(RADIO_PARAMS_UPDATE);
        cmd_frame->desc_word[3] = cpu_to_le16(BIT(0));

        cmd_frame->desc_word[3] |= cpu_to_le16(common->tx_power << 8);

        skb_put(skb, FRAME_DESC_SZ);

        return rsi_send_internal_mgmt_frame(common, skb);
}

/* This function programs the threshold. */
int rsi_send_vap_dynamic_update(struct rsi_common *common)
{
        struct sk_buff *skb;
        struct rsi_dynamic_s *dynamic_frame;

        rsi_dbg(MGMT_TX_ZONE,
                "%s: Sending vap update indication frame\n", __func__);

        skb = dev_alloc_skb(sizeof(struct rsi_dynamic_s));
        if (!skb)
                return -ENOMEM;

        memset(skb->data, 0, sizeof(struct rsi_dynamic_s));
        dynamic_frame = (struct rsi_dynamic_s *)skb->data;
        rsi_set_len_qno(&dynamic_frame->desc_dword0.len_qno,
                        sizeof(dynamic_frame->frame_body), RSI_WIFI_MGMT_Q);

        dynamic_frame->desc_dword0.frame_type = VAP_DYNAMIC_UPDATE;
        dynamic_frame->desc_dword2.pkt_info =
                                        cpu_to_le32(common->rts_threshold);

        if (common->wow_flags & RSI_WOW_ENABLED) {
                /* Beacon miss threshold */
                dynamic_frame->desc_dword3.token =
                                        cpu_to_le16(RSI_BCN_MISS_THRESHOLD);
                dynamic_frame->frame_body.keep_alive_period =
                                        cpu_to_le16(RSI_WOW_KEEPALIVE);
        } else {
                dynamic_frame->frame_body.keep_alive_period =
                                        cpu_to_le16(RSI_DEF_KEEPALIVE);
        }

        dynamic_frame->desc_dword3.sta_id = 0; /* vap id */

        skb_put(skb, sizeof(struct rsi_dynamic_s));

        return rsi_send_internal_mgmt_frame(common, skb);
}

/**
 * rsi_compare() - This function is used to compare two integers
 * @a: pointer to the first integer
 * @b: pointer to the second integer
 *
 * Return: 0 if both are equal, -1 if the first is smaller, else 1
 */
static int rsi_compare(const void *a, const void *b)
{
        u16 _a = *(const u16 *)(a);
        u16 _b = *(const u16 *)(b);

        if (_a > _b)
                return -1;

        if (_a < _b)
                return 1;

        return 0;
}

/**
 * rsi_map_rates() - This function is used to map selected rates to hw rates.
 * @rate: The standard rate to be mapped.
 * @offset: Offset that will be returned.
 *
 * Return: 0 if it is a mcs rate, else 1
 */
static bool rsi_map_rates(u16 rate, int *offset)
{
        int kk;
        for (kk = 0; kk < ARRAY_SIZE(rsi_mcsrates); kk++) {
                if (rate == mcs[kk]) {
                        *offset = kk;
                        return false;
                }
        }

        for (kk = 0; kk < ARRAY_SIZE(rsi_rates); kk++) {
                if (rate == rsi_rates[kk].bitrate / 5) {
                        *offset = kk;
                        break;
                }
        }
        return true;
}

/**
 * rsi_send_auto_rate_request() - This function is to set rates for connection
 *                                and send autorate request to firmware.
 * @common: Pointer to the driver private structure.
 *
 * Return: 0 on success, corresponding error code on failure.
 */
static int rsi_send_auto_rate_request(struct rsi_common *common,
                                      struct ieee80211_sta *sta,
                                      u16 sta_id,
                                      struct ieee80211_vif *vif)
{
        struct sk_buff *skb;
        struct rsi_auto_rate *auto_rate;
        int ii = 0, jj = 0, kk = 0;
        struct ieee80211_hw *hw = common->priv->hw;
        u8 band = hw->conf.chandef.chan->band;
        u8 num_supported_rates = 0;
        u8 rate_table_offset, rate_offset = 0;
        u32 rate_bitmap;
        u16 *selected_rates, min_rate;
        bool is_ht = false, is_sgi = false;
        u16 frame_len = sizeof(struct rsi_auto_rate);

        rsi_dbg(MGMT_TX_ZONE,
                "%s: Sending auto rate request frame\n", __func__);

        skb = dev_alloc_skb(frame_len);
        if (!skb) {
                rsi_dbg(ERR_ZONE, "%s: Failed in allocation of skb\n",
                        __func__);
                return -ENOMEM;
        }

        memset(skb->data, 0, frame_len);
        selected_rates = kzalloc(2 * RSI_TBL_SZ, GFP_KERNEL);
        if (!selected_rates) {
                rsi_dbg(ERR_ZONE, "%s: Failed in allocation of mem\n",
                        __func__);
                dev_kfree_skb(skb);
                return -ENOMEM;
        }

        auto_rate = (struct rsi_auto_rate *)skb->data;

        auto_rate->aarf_rssi = cpu_to_le16(((u16)3 << 6) | (u16)(18 & 0x3f));
        auto_rate->collision_tolerance = cpu_to_le16(3);
        auto_rate->failure_limit = cpu_to_le16(3);
        auto_rate->initial_boundary = cpu_to_le16(3);
        auto_rate->max_threshold_limt = cpu_to_le16(27);

        auto_rate->desc.desc_dword0.frame_type = AUTO_RATE_IND;

        if (common->channel_width == BW_40MHZ)
                auto_rate->desc.desc_dword3.qid_tid = BW_40MHZ;
        auto_rate->desc.desc_dword3.sta_id = sta_id;

        if (vif->type == NL80211_IFTYPE_STATION) {
                rate_bitmap = common->bitrate_mask[band];
                is_ht = common->vif_info[0].is_ht;
                is_sgi = common->vif_info[0].sgi;
        } else {
                rate_bitmap = sta->supp_rates[band];
                is_ht = sta->ht_cap.ht_supported;
                if ((sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_20) ||
                    (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40))
                        is_sgi = true;
        }

        if (band == NL80211_BAND_2GHZ) {
                if ((rate_bitmap == 0) && (is_ht))
                        min_rate = RSI_RATE_MCS0;
                else
                        min_rate = RSI_RATE_1;
                rate_table_offset = 0;
        } else {
                if ((rate_bitmap == 0) && (is_ht))
                        min_rate = RSI_RATE_MCS0;
                else
                        min_rate = RSI_RATE_6;
                rate_table_offset = 4;
        }

        for (ii = 0, jj = 0;
             ii < (ARRAY_SIZE(rsi_rates) - rate_table_offset); ii++) {
                if (rate_bitmap & BIT(ii)) {
                        selected_rates[jj++] =
                        (rsi_rates[ii + rate_table_offset].bitrate / 5);
                        rate_offset++;
                }
        }
        num_supported_rates = jj;

        if (is_ht) {
                for (ii = 0; ii < ARRAY_SIZE(mcs); ii++)
                        selected_rates[jj++] = mcs[ii];
                num_supported_rates += ARRAY_SIZE(mcs);
                rate_offset += ARRAY_SIZE(mcs);
        }

        sort(selected_rates, jj, sizeof(u16), &rsi_compare, NULL);

        /* mapping the rates to RSI rates */
        for (ii = 0; ii < jj; ii++) {
                if (rsi_map_rates(selected_rates[ii], &kk)) {
                        auto_rate->supported_rates[ii] =
                                cpu_to_le16(rsi_rates[kk].hw_value);
                } else {
                        auto_rate->supported_rates[ii] =
                                cpu_to_le16(rsi_mcsrates[kk]);
                }
        }

        /* loading HT rates in the bottom half of the auto rate table */
        if (is_ht) {
                for (ii = rate_offset, kk = ARRAY_SIZE(rsi_mcsrates) - 1;
                     ii < rate_offset + 2 * ARRAY_SIZE(rsi_mcsrates); ii++) {
                        if (is_sgi || conf_is_ht40(&common->priv->hw->conf))
                                auto_rate->supported_rates[ii++] =
                                        cpu_to_le16(rsi_mcsrates[kk] | BIT(9));
                        else
                                auto_rate->supported_rates[ii++] =
                                        cpu_to_le16(rsi_mcsrates[kk]);
                        auto_rate->supported_rates[ii] =
                                cpu_to_le16(rsi_mcsrates[kk--]);
                }

                for (; ii < (RSI_TBL_SZ - 1); ii++) {
                        auto_rate->supported_rates[ii] =
                                cpu_to_le16(rsi_mcsrates[0]);
                }
        }

        for (; ii < RSI_TBL_SZ; ii++)
                auto_rate->supported_rates[ii] = cpu_to_le16(min_rate);

        auto_rate->num_supported_rates = cpu_to_le16(num_supported_rates * 2);
        auto_rate->moderate_rate_inx = cpu_to_le16(num_supported_rates / 2);
        num_supported_rates *= 2;

        rsi_set_len_qno(&auto_rate->desc.desc_dword0.len_qno,
                        (frame_len - FRAME_DESC_SZ), RSI_WIFI_MGMT_Q);

        skb_put(skb, frame_len);
        kfree(selected_rates);

        return rsi_send_internal_mgmt_frame(common, skb);
}

/**
 * rsi_inform_bss_status() - This function informs about bss status with the
 *                           help of sta notify params by sending an internal
 *                           management frame to firmware.
 * @common: Pointer to the driver private structure.
 * @status: Bss status type.
 * @bssid: Bssid.
 * @qos_enable: Qos is enabled.
 * @aid: Aid (unique for all STAs).
 *
 * Return: None.
 */
void rsi_inform_bss_status(struct rsi_common *common,
                           enum opmode opmode,
                           u8 status,
                           const u8 *addr,
                           u8 qos_enable,
                           u16 aid,
                           struct ieee80211_sta *sta,
                           u16 sta_id,
                           u16 assoc_cap,
                           struct ieee80211_vif *vif)
{
        if (status) {
                if (opmode == RSI_OPMODE_STA)
                        common->hw_data_qs_blocked = true;
                rsi_hal_send_sta_notify_frame(common,
                                              opmode,
                                              STA_CONNECTED,
                                              addr,
                                              qos_enable,
                                              aid, sta_id,
                                              vif);
                if (common->min_rate == 0xffff)
                        rsi_send_auto_rate_request(common, sta, sta_id, vif);
                if (opmode == RSI_OPMODE_STA &&
                    !(assoc_cap & WLAN_CAPABILITY_PRIVACY) &&
                    !rsi_send_block_unblock_frame(common, false))
                        common->hw_data_qs_blocked = false;
        } else {
                if (opmode == RSI_OPMODE_STA)
                        common->hw_data_qs_blocked = true;

                if (!(common->wow_flags & RSI_WOW_ENABLED))
                        rsi_hal_send_sta_notify_frame(common, opmode,
                                                      STA_DISCONNECTED, addr,
                                                      qos_enable, aid, sta_id,
                                                      vif);
                if (opmode == RSI_OPMODE_STA)
                        rsi_send_block_unblock_frame(common, true);
        }
}

/**
 * rsi_eeprom_read() - This function sends a frame to read the mac address
 *                     from the eeprom.
 * @common: Pointer to the driver private structure.
 *
 * Return: 0 on success, -1 on failure.
 */
static int rsi_eeprom_read(struct rsi_common *common)
{
        struct rsi_eeprom_read_frame *mgmt_frame;
        struct rsi_hw *adapter = common->priv;
        struct sk_buff *skb;

        rsi_dbg(MGMT_TX_ZONE, "%s: Sending EEPROM read req frame\n", __func__);

        skb = dev_alloc_skb(FRAME_DESC_SZ);
        if (!skb) {
                rsi_dbg(ERR_ZONE, "%s: Failed in allocation of skb\n",
                        __func__);
                return -ENOMEM;
        }

        memset(skb->data, 0, FRAME_DESC_SZ);
        mgmt_frame = (struct rsi_eeprom_read_frame *)skb->data;

        /* FrameType */
        rsi_set_len_qno(&mgmt_frame->len_qno, 0, RSI_WIFI_MGMT_Q);
        mgmt_frame->pkt_type = EEPROM_READ;

        /* Number of bytes to read */
        mgmt_frame->pkt_info =
                cpu_to_le32((adapter->eeprom.length << RSI_EEPROM_LEN_OFFSET) &
                            RSI_EEPROM_LEN_MASK);
        mgmt_frame->pkt_info |= cpu_to_le32((3 << RSI_EEPROM_HDR_SIZE_OFFSET) &
                                            RSI_EEPROM_HDR_SIZE_MASK);

        /* Address to read */
        mgmt_frame->eeprom_offset = cpu_to_le32(adapter->eeprom.offset);

        skb_put(skb, FRAME_DESC_SZ);

        return rsi_send_internal_mgmt_frame(common, skb);
}

/**
 * This function sends a frame to block/unblock
 * data queues in the firmware
 *
 * @param common Pointer to the driver private structure.
 * @param block event - block if true, unblock if false
 * @return 0 on success, -1 on failure.
 */
int rsi_send_block_unblock_frame(struct rsi_common *common, bool block_event)
{
        struct rsi_block_unblock_data *mgmt_frame;
        struct sk_buff *skb;

        rsi_dbg(MGMT_TX_ZONE, "%s: Sending block/unblock frame\n", __func__);

        skb = dev_alloc_skb(FRAME_DESC_SZ);
        if (!skb) {
                rsi_dbg(ERR_ZONE, "%s: Failed in allocation of skb\n",
                        __func__);
                return -ENOMEM;
        }

        memset(skb->data, 0, FRAME_DESC_SZ);
        mgmt_frame = (struct rsi_block_unblock_data *)skb->data;

        rsi_set_len_qno(&mgmt_frame->desc_dword0.len_qno, 0, RSI_WIFI_MGMT_Q);
        mgmt_frame->desc_dword0.frame_type = BLOCK_HW_QUEUE;
        mgmt_frame->host_quiet_info = QUIET_INFO_VALID;

        if (block_event) {
                rsi_dbg(INFO_ZONE, "blocking the data qs\n");
                mgmt_frame->block_q_bitmap = cpu_to_le16(0xf);
                mgmt_frame->block_q_bitmap |= cpu_to_le16(0xf << 4);
        } else {
                rsi_dbg(INFO_ZONE, "unblocking the data qs\n");
                mgmt_frame->unblock_q_bitmap = cpu_to_le16(0xf);
                mgmt_frame->unblock_q_bitmap |= cpu_to_le16(0xf << 4);
        }

        skb_put(skb, FRAME_DESC_SZ);

        return rsi_send_internal_mgmt_frame(common, skb);
}

/**
 * rsi_send_rx_filter_frame() - Sends a frame to filter the RX packets
 *
 * @common: Pointer to the driver private structure.
 * @rx_filter_word: Flags of filter packets
 *
 * @Return: 0 on success, -1 on failure.
 */
int rsi_send_rx_filter_frame(struct rsi_common *common, u16 rx_filter_word)
{
        struct rsi_mac_frame *cmd_frame;
        struct sk_buff *skb;

        rsi_dbg(MGMT_TX_ZONE, "Sending RX filter frame\n");

        skb = dev_alloc_skb(FRAME_DESC_SZ);
        if (!skb) {
                rsi_dbg(ERR_ZONE, "%s: Failed in allocation of skb\n",
                        __func__);
                return -ENOMEM;
        }

        memset(skb->data, 0, FRAME_DESC_SZ);
        cmd_frame = (struct rsi_mac_frame *)skb->data;

        cmd_frame->desc_word[0] = cpu_to_le16(RSI_WIFI_MGMT_Q << 12);
        cmd_frame->desc_word[1] = cpu_to_le16(SET_RX_FILTER);
        cmd_frame->desc_word[4] = cpu_to_le16(rx_filter_word);

        skb_put(skb, FRAME_DESC_SZ);

        return rsi_send_internal_mgmt_frame(common, skb);
}

int rsi_send_ps_request(struct rsi_hw *adapter, bool enable,
                        struct ieee80211_vif *vif)
{
        struct rsi_common *common = adapter->priv;
        struct ieee80211_bss_conf *bss = &vif->bss_conf;
        struct rsi_request_ps *ps;
        struct rsi_ps_info *ps_info;
        struct sk_buff *skb;
        int frame_len = sizeof(*ps);

        skb = dev_alloc_skb(frame_len);
        if (!skb)
                return -ENOMEM;
        memset(skb->data, 0, frame_len);

        ps = (struct rsi_request_ps *)skb->data;
        ps_info = &adapter->ps_info;

        rsi_set_len_qno(&ps->desc.desc_dword0.len_qno,
                        (frame_len - FRAME_DESC_SZ), RSI_WIFI_MGMT_Q);
        ps->desc.desc_dword0.frame_type = WAKEUP_SLEEP_REQUEST;
        if (enable) {
                ps->ps_sleep.enable = RSI_PS_ENABLE;
                ps->desc.desc_dword3.token = cpu_to_le16(RSI_SLEEP_REQUEST);
        } else {
                ps->ps_sleep.enable = RSI_PS_DISABLE;
                ps->desc.desc_dword0.len_qno |= cpu_to_le16(RSI_PS_DISABLE_IND);
                ps->desc.desc_dword3.token = cpu_to_le16(RSI_WAKEUP_REQUEST);
        }

        ps->ps_uapsd_acs = common->uapsd_bitmap;

        ps->ps_sleep.sleep_type = ps_info->sleep_type;
        ps->ps_sleep.num_bcns_per_lis_int =
                cpu_to_le16(ps_info->num_bcns_per_lis_int);
        ps->ps_sleep.sleep_duration =
                cpu_to_le32(ps_info->deep_sleep_wakeup_period);

        if (bss->assoc)
                ps->ps_sleep.connected_sleep = RSI_CONNECTED_SLEEP;
        else
                ps->ps_sleep.connected_sleep = RSI_DEEP_SLEEP;

        ps->ps_listen_interval = cpu_to_le32(ps_info->listen_interval);
        ps->ps_dtim_interval_duration =
                cpu_to_le32(ps_info->dtim_interval_duration);

        if (ps_info->listen_interval > ps_info->dtim_interval_duration)
                ps->ps_listen_interval = cpu_to_le32(RSI_PS_DISABLE);

        ps->ps_num_dtim_intervals = cpu_to_le16(ps_info->num_dtims_per_sleep);
        skb_put(skb, frame_len);

        return rsi_send_internal_mgmt_frame(common, skb);
}

static int rsi_send_w9116_features(struct rsi_common *common)
{
        struct rsi_wlan_9116_features *w9116_features;
        u16 frame_len = sizeof(struct rsi_wlan_9116_features);
        struct sk_buff *skb;

        rsi_dbg(MGMT_TX_ZONE,
                "%s: Sending wlan 9116 features\n", __func__);

        skb = dev_alloc_skb(frame_len);
        if (!skb)
                return -ENOMEM;
        memset(skb->data, 0, frame_len);

        w9116_features = (struct rsi_wlan_9116_features *)skb->data;

        w9116_features->pll_mode = common->w9116_features.pll_mode;
        w9116_features->rf_type = common->w9116_features.rf_type;
        w9116_features->wireless_mode = common->w9116_features.wireless_mode;
        w9116_features->enable_ppe = common->w9116_features.enable_ppe;
        w9116_features->afe_type = common->w9116_features.afe_type;
        if (common->w9116_features.dpd)
                w9116_features->feature_enable |= cpu_to_le32(RSI_DPD);
        if (common->w9116_features.sifs_tx_enable)
                w9116_features->feature_enable |=
                        cpu_to_le32(RSI_SIFS_TX_ENABLE);
        if (common->w9116_features.ps_options & RSI_DUTY_CYCLING)
                w9116_features->feature_enable |= cpu_to_le32(RSI_DUTY_CYCLING);
        if (common->w9116_features.ps_options & RSI_END_OF_FRAME)
                w9116_features->feature_enable |= cpu_to_le32(RSI_END_OF_FRAME);
        w9116_features->feature_enable |=
                cpu_to_le32((common->w9116_features.ps_options & ~0x3) << 2);

        rsi_set_len_qno(&w9116_features->desc.desc_dword0.len_qno,
                        frame_len - FRAME_DESC_SZ, RSI_WIFI_MGMT_Q);
        w9116_features->desc.desc_dword0.frame_type = FEATURES_ENABLE;
        skb_put(skb, frame_len);

        return rsi_send_internal_mgmt_frame(common, skb);
}

/**
 * rsi_set_antenna() - This function send antenna configuration request
 *                     to device
 *
 * @common: Pointer to the driver private structure.
 * @antenna: bitmap for tx antenna selection
 *
 * Return: 0 on Success, negative error code on failure
 */
int rsi_set_antenna(struct rsi_common *common, u8 antenna)
{
        struct rsi_ant_sel_frame *ant_sel_frame;
        struct sk_buff *skb;

        skb = dev_alloc_skb(FRAME_DESC_SZ);
        if (!skb) {
                rsi_dbg(ERR_ZONE, "%s: Failed in allocation of skb\n",
                        __func__);
                return -ENOMEM;
        }

        memset(skb->data, 0, FRAME_DESC_SZ);

        ant_sel_frame = (struct rsi_ant_sel_frame *)skb->data;
        ant_sel_frame->desc_dword0.frame_type = ANT_SEL_FRAME;
        ant_sel_frame->sub_frame_type = ANTENNA_SEL_TYPE;
        ant_sel_frame->ant_value = cpu_to_le16(antenna & ANTENNA_MASK_VALUE);
        rsi_set_len_qno(&ant_sel_frame->desc_dword0.len_qno,
                        0, RSI_WIFI_MGMT_Q);
        skb_put(skb, FRAME_DESC_SZ);

        return rsi_send_internal_mgmt_frame(common, skb);
}

static int rsi_send_beacon(struct rsi_common *common)
{
        struct sk_buff *skb = NULL;
        u8 dword_align_bytes = 0;

        skb = dev_alloc_skb(MAX_MGMT_PKT_SIZE);
        if (!skb)
                return -ENOMEM;

        memset(skb->data, 0, MAX_MGMT_PKT_SIZE);

        dword_align_bytes = ((unsigned long)skb->data & 0x3f);
        if (dword_align_bytes)
                skb_pull(skb, (64 - dword_align_bytes));
        if (rsi_prepare_beacon(common, skb)) {
                rsi_dbg(ERR_ZONE, "Failed to prepare beacon\n");
                return -EINVAL;
        }
        skb_queue_tail(&common->tx_queue[MGMT_BEACON_Q], skb);
        rsi_set_event(&common->tx_thread.event);
        rsi_dbg(DATA_TX_ZONE, "%s: Added to beacon queue\n", __func__);

        return 0;
}

#ifdef CONFIG_PM
int rsi_send_wowlan_request(struct rsi_common *common, u16 flags,
                            u16 sleep_status)
{
        struct rsi_wowlan_req *cmd_frame;
        struct sk_buff *skb;
        u8 length;

        rsi_dbg(ERR_ZONE, "%s: Sending wowlan request frame\n", __func__);

        length = sizeof(*cmd_frame);
        skb = dev_alloc_skb(length);
        if (!skb)
                return -ENOMEM;
        memset(skb->data, 0, length);
        cmd_frame = (struct rsi_wowlan_req *)skb->data;

        rsi_set_len_qno(&cmd_frame->desc.desc_dword0.len_qno,
                        (length - FRAME_DESC_SZ),
                        RSI_WIFI_MGMT_Q);
        cmd_frame->desc.desc_dword0.frame_type = WOWLAN_CONFIG_PARAMS;
        cmd_frame->host_sleep_status = sleep_status;
        if (common->secinfo.security_enable &&
            common->secinfo.gtk_cipher)
                flags |= RSI_WOW_GTK_REKEY;
        if (sleep_status)
                cmd_frame->wow_flags = flags;
        rsi_dbg(INFO_ZONE, "Host_Sleep_Status : %d Flags : %d\n",
                cmd_frame->host_sleep_status, cmd_frame->wow_flags);

        skb_put(skb, length);

        return rsi_send_internal_mgmt_frame(common, skb);
}
#endif

int rsi_send_bgscan_params(struct rsi_common *common, int enable)
{
        struct rsi_bgscan_params *params = &common->bgscan;
        struct cfg80211_scan_request *scan_req = common->hwscan;
        struct rsi_bgscan_config *bgscan;
        struct sk_buff *skb;
        u16 frame_len = sizeof(*bgscan);
        u8 i;

        rsi_dbg(MGMT_TX_ZONE, "%s: Sending bgscan params frame\n", __func__);

        skb = dev_alloc_skb(frame_len);
        if (!skb)
                return -ENOMEM;
        memset(skb->data, 0, frame_len);

        bgscan = (struct rsi_bgscan_config *)skb->data;
        rsi_set_len_qno(&bgscan->desc_dword0.len_qno,
                        (frame_len - FRAME_DESC_SZ), RSI_WIFI_MGMT_Q);
        bgscan->desc_dword0.frame_type = BG_SCAN_PARAMS;
        bgscan->bgscan_threshold = cpu_to_le16(params->bgscan_threshold);
        bgscan->roam_threshold = cpu_to_le16(params->roam_threshold);
        if (enable)
                bgscan->bgscan_periodicity =
                        cpu_to_le16(params->bgscan_periodicity);
        bgscan->active_scan_duration =
                        cpu_to_le16(params->active_scan_duration);
        bgscan->passive_scan_duration =
                        cpu_to_le16(params->passive_scan_duration);
        bgscan->two_probe = params->two_probe;

        bgscan->num_bgscan_channels = scan_req->n_channels;
        for (i = 0; i < bgscan->num_bgscan_channels; i++)
                bgscan->channels2scan[i] =
                        cpu_to_le16(scan_req->channels[i]->hw_value);

        skb_put(skb, frame_len);

        return rsi_send_internal_mgmt_frame(common, skb);
}

/* This function sends the probe request to be used by firmware in
 * background scan
 */
int rsi_send_bgscan_probe_req(struct rsi_common *common,
                              struct ieee80211_vif *vif)
{
        struct cfg80211_scan_request *scan_req = common->hwscan;
        struct rsi_bgscan_probe *bgscan;
        struct sk_buff *skb;
        struct sk_buff *probereq_skb;
        u16 frame_len = sizeof(*bgscan);
        size_t ssid_len = 0;
        u8 *ssid = NULL;

        rsi_dbg(MGMT_TX_ZONE,
                "%s: Sending bgscan probe req frame\n", __func__);

        if (common->priv->sc_nvifs <= 0)
                return -ENODEV;

        if (scan_req->n_ssids) {
                ssid = scan_req->ssids[0].ssid;
                ssid_len = scan_req->ssids[0].ssid_len;
        }

        skb = dev_alloc_skb(frame_len + MAX_BGSCAN_PROBE_REQ_LEN);
        if (!skb)
                return -ENOMEM;
        memset(skb->data, 0, frame_len + MAX_BGSCAN_PROBE_REQ_LEN);

        bgscan = (struct rsi_bgscan_probe *)skb->data;
        bgscan->desc_dword0.frame_type = BG_SCAN_PROBE_REQ;
        bgscan->flags = cpu_to_le16(HOST_BG_SCAN_TRIG);
        if (common->band == NL80211_BAND_5GHZ) {
                bgscan->mgmt_rate = cpu_to_le16(RSI_RATE_6);
                bgscan->def_chan = cpu_to_le16(40);
        } else {
                bgscan->mgmt_rate = cpu_to_le16(RSI_RATE_1);
                bgscan->def_chan = cpu_to_le16(11);
        }
        bgscan->channel_scan_time = cpu_to_le16(RSI_CHANNEL_SCAN_TIME);

        probereq_skb = ieee80211_probereq_get(common->priv->hw, vif->addr, ssid,
                                              ssid_len, scan_req->ie_len);
        if (!probereq_skb) {
                dev_kfree_skb(skb);
                return -ENOMEM;
        }

        memcpy(&skb->data[frame_len], probereq_skb->data, probereq_skb->len);

        bgscan->probe_req_length = cpu_to_le16(probereq_skb->len);

        rsi_set_len_qno(&bgscan->desc_dword0.len_qno,
                        (frame_len - FRAME_DESC_SZ + probereq_skb->len),
                        RSI_WIFI_MGMT_Q);

        skb_put(skb, frame_len + probereq_skb->len);

        dev_kfree_skb(probereq_skb);

        return rsi_send_internal_mgmt_frame(common, skb);
}

/**
 * rsi_handle_ta_confirm_type() - This function handles the confirm frames.
 * @common: Pointer to the driver private structure.
 * @msg: Pointer to received packet.
 *
 * Return: 0 on success, -1 on failure.
 */
static int rsi_handle_ta_confirm_type(struct rsi_common *common,
                                      u8 *msg)
{
        struct rsi_hw *adapter = common->priv;
        u8 sub_type = (msg[15] & 0xff);
        u16 msg_len = ((u16 *)msg)[0] & 0xfff;
        u8 offset;

        switch (sub_type) {
        case BOOTUP_PARAMS_REQUEST:
                rsi_dbg(FSM_ZONE, "%s: Boot up params confirm received\n",
                        __func__);
                if (common->fsm_state == FSM_BOOT_PARAMS_SENT) {
                        if (adapter->device_model == RSI_DEV_9116) {
                                common->band = NL80211_BAND_5GHZ;
                                common->num_supp_bands = 2;

                                if (rsi_send_reset_mac(common))
                                        goto out;
                                else
                                        common->fsm_state = FSM_RESET_MAC_SENT;
                        } else {
                                adapter->eeprom.length =
                                        (IEEE80211_ADDR_LEN +
                                         WLAN_MAC_MAGIC_WORD_LEN +
                                         WLAN_HOST_MODE_LEN);
                                adapter->eeprom.offset = WLAN_MAC_EEPROM_ADDR;
                                if (rsi_eeprom_read(common)) {
                                        common->fsm_state = FSM_CARD_NOT_READY;
                                        goto out;
                                }
                                common->fsm_state = FSM_EEPROM_READ_MAC_ADDR;
                        }
                } else {
                        rsi_dbg(INFO_ZONE,
                                "%s: Received bootup params cfm in %d state\n",
                                 __func__, common->fsm_state);
                        return 0;
                }
                break;

        case EEPROM_READ:
                rsi_dbg(FSM_ZONE, "EEPROM READ confirm received\n");
                if (msg_len <= 0) {
                        rsi_dbg(FSM_ZONE,
                                "%s: [EEPROM_READ] Invalid len %d\n",
                                __func__, msg_len);
                        goto out;
                }
                if (msg[16] != MAGIC_WORD) {
                        rsi_dbg(FSM_ZONE,
                                "%s: [EEPROM_READ] Invalid token\n", __func__);
                        common->fsm_state = FSM_CARD_NOT_READY;
                        goto out;
                }
                if (common->fsm_state == FSM_EEPROM_READ_MAC_ADDR) {
                        offset = (FRAME_DESC_SZ + WLAN_HOST_MODE_LEN +
                                  WLAN_MAC_MAGIC_WORD_LEN);
                        memcpy(common->mac_addr, &msg[offset], ETH_ALEN);
                        adapter->eeprom.length =
                                ((WLAN_MAC_MAGIC_WORD_LEN + 3) & (~3));
                        adapter->eeprom.offset = WLAN_EEPROM_RFTYPE_ADDR;
                        if (rsi_eeprom_read(common)) {
                                rsi_dbg(ERR_ZONE,
                                        "%s: Failed reading RF band\n",
                                        __func__);
                                common->fsm_state = FSM_CARD_NOT_READY;
                                goto out;
                        }
                        common->fsm_state = FSM_EEPROM_READ_RF_TYPE;
                } else if (common->fsm_state == FSM_EEPROM_READ_RF_TYPE) {
                        if ((msg[17] & 0x3) == 0x3) {
                                rsi_dbg(INIT_ZONE, "Dual band supported\n");
                                common->band = NL80211_BAND_5GHZ;
                                common->num_supp_bands = 2;
                        } else if ((msg[17] & 0x3) == 0x1) {
                                rsi_dbg(INIT_ZONE,
                                        "Only 2.4Ghz band supported\n");
                                common->band = NL80211_BAND_2GHZ;
                                common->num_supp_bands = 1;
                        }
                        if (rsi_send_reset_mac(common))
                                goto out;
                        common->fsm_state = FSM_RESET_MAC_SENT;
                } else {

                        rsi_dbg(ERR_ZONE, "%s: Invalid EEPROM read type\n",
                                __func__);
                        return 0;
                }
                break;

        case RESET_MAC_REQ:
                if (common->fsm_state == FSM_RESET_MAC_SENT) {
                        rsi_dbg(FSM_ZONE, "%s: Reset MAC cfm received\n",
                                __func__);

                        if (rsi_load_radio_caps(common))
                                goto out;
                        else
                                common->fsm_state = FSM_RADIO_CAPS_SENT;
                } else {
                        rsi_dbg(ERR_ZONE,
                                "%s: Received reset mac cfm in %d state\n",
                                 __func__, common->fsm_state);
                        return 0;
                }
                break;

        case RADIO_CAPABILITIES:
                if (common->fsm_state == FSM_RADIO_CAPS_SENT) {
                        common->rf_reset = 1;
                        if (adapter->device_model == RSI_DEV_9116 &&
                            rsi_send_w9116_features(common)) {
                                rsi_dbg(ERR_ZONE,
                                        "Failed to send 9116 features\n");
                                goto out;
                        }
                        if (rsi_program_bb_rf(common)) {
                                goto out;
                        } else {
                                common->fsm_state = FSM_BB_RF_PROG_SENT;
                                rsi_dbg(FSM_ZONE, "%s: Radio cap cfm received\n",
                                        __func__);
                        }
                } else {
                        rsi_dbg(INFO_ZONE,
                                "%s: Received radio caps cfm in %d state\n",
                                 __func__, common->fsm_state);
                        return 0;
                }
                break;

        case BB_PROG_VALUES_REQUEST:
        case RF_PROG_VALUES_REQUEST:
        case BBP_PROG_IN_TA:
                rsi_dbg(FSM_ZONE, "%s: BB/RF cfm received\n", __func__);
                if (common->fsm_state == FSM_BB_RF_PROG_SENT) {
                        common->bb_rf_prog_count--;
                        if (!common->bb_rf_prog_count) {
                                common->fsm_state = FSM_MAC_INIT_DONE;
                                if (common->reinit_hw) {
                                        complete(&common->wlan_init_completion);
                                } else {
                                        return rsi_mac80211_attach(common);
                                }
                        }
                } else {
                        rsi_dbg(INFO_ZONE,
                                "%s: Received bbb_rf cfm in %d state\n",
                                 __func__, common->fsm_state);
                        return 0;
                }
                break;

        case SCAN_REQUEST:
                rsi_dbg(INFO_ZONE, "Set channel confirm\n");
                break;

        case WAKEUP_SLEEP_REQUEST:
                rsi_dbg(INFO_ZONE, "Wakeup/Sleep confirmation.\n");
                return rsi_handle_ps_confirm(adapter, msg);

        case BG_SCAN_PROBE_REQ:
                rsi_dbg(INFO_ZONE, "BG scan complete event\n");
                if (common->bgscan_en) {
                        struct cfg80211_scan_info info;

                        if (!rsi_send_bgscan_params(common, RSI_STOP_BGSCAN))
                                common->bgscan_en = 0;
                        info.aborted = false;
                        ieee80211_scan_completed(adapter->hw, &info);
                }
                rsi_dbg(INFO_ZONE, "Background scan completed\n");
                break;

        default:
                rsi_dbg(INFO_ZONE, "%s: Invalid TA confirm pkt received\n",
                        __func__);
                break;
        }
        return 0;
out:
        rsi_dbg(ERR_ZONE, "%s: Unable to send pkt/Invalid frame received\n",
                __func__);
        return -EINVAL;
}

int rsi_handle_card_ready(struct rsi_common *common, u8 *msg)
{
        int status;

        switch (common->fsm_state) {
        case FSM_CARD_NOT_READY:
                rsi_dbg(INIT_ZONE, "Card ready indication from Common HAL\n");
                rsi_set_default_parameters(common);
                if (rsi_send_common_dev_params(common) < 0)
                        return -EINVAL;
                common->fsm_state = FSM_COMMON_DEV_PARAMS_SENT;
                break;
        case FSM_COMMON_DEV_PARAMS_SENT:
                rsi_dbg(INIT_ZONE, "Card ready indication from WLAN HAL\n");

                if (common->priv->device_model == RSI_DEV_9116) {
                        if (msg[16] != MAGIC_WORD) {
                                rsi_dbg(FSM_ZONE,
                                        "%s: [EEPROM_READ] Invalid token\n",
                                        __func__);
                                common->fsm_state = FSM_CARD_NOT_READY;
                                return -EINVAL;
                        }
                        memcpy(common->mac_addr, &msg[20], ETH_ALEN);
                        rsi_dbg(INIT_ZONE, "MAC Addr %pM", common->mac_addr);
                }
                /* Get usb buffer status register address */
                common->priv->usb_buffer_status_reg = *(u32 *)&msg[8];
                rsi_dbg(INFO_ZONE, "USB buffer status register = %x\n",
                        common->priv->usb_buffer_status_reg);

                if (common->priv->device_model == RSI_DEV_9116)
                        status = rsi_load_9116_bootup_params(common);
                else
                        status = rsi_load_bootup_params(common);
                if (status < 0) {
                        common->fsm_state = FSM_CARD_NOT_READY;
                        return status;
                }
                common->fsm_state = FSM_BOOT_PARAMS_SENT;
                break;
        default:
                rsi_dbg(ERR_ZONE,
                        "%s: card ready indication in invalid state %d.\n",
                        __func__, common->fsm_state);
                return -EINVAL;
        }

        return 0;
}

/**
 * rsi_mgmt_pkt_recv() - This function processes the management packets
 *                       received from the hardware.
 * @common: Pointer to the driver private structure.
 * @msg: Pointer to the received packet.
 *
 * Return: 0 on success, -1 on failure.
 */
int rsi_mgmt_pkt_recv(struct rsi_common *common, u8 *msg)
{
        s32 msg_len = (le16_to_cpu(*(__le16 *)&msg[0]) & 0x0fff);
        u16 msg_type = (msg[2]);

        rsi_dbg(FSM_ZONE, "%s: Msg Len: %d, Msg Type: %4x\n",
                __func__, msg_len, msg_type);

        switch (msg_type) {
        case TA_CONFIRM_TYPE:
                return rsi_handle_ta_confirm_type(common, msg);
        case CARD_READY_IND:
                common->hibernate_resume = false;
                rsi_dbg(FSM_ZONE, "%s: Card ready indication received\n",
                        __func__);
                return rsi_handle_card_ready(common, msg);
        case TX_STATUS_IND:
                switch (msg[RSI_TX_STATUS_TYPE]) {
                case PROBEREQ_CONFIRM:
                        common->mgmt_q_block = false;
                        rsi_dbg(FSM_ZONE, "%s: Probe confirm received\n",
                                __func__);
                        break;
                case EAPOL4_CONFIRM:
                        if (msg[RSI_TX_STATUS]) {
                                common->eapol4_confirm = true;
                                if (!rsi_send_block_unblock_frame(common,
                                                                  false))
                                        common->hw_data_qs_blocked = false;
                        }
                }
                break;
        case BEACON_EVENT_IND:
                rsi_dbg(INFO_ZONE, "Beacon event\n");
                if (common->fsm_state != FSM_MAC_INIT_DONE)
                        return -1;
                if (common->iface_down)
                        return -1;
                if (!common->beacon_enabled)
                        return -1;
                rsi_send_beacon(common);
                break;
        case WOWLAN_WAKEUP_REASON:
                rsi_dbg(ERR_ZONE, "\n\nWakeup Type: %x\n", msg[15]);
                switch (msg[15]) {
                case RSI_UNICAST_MAGIC_PKT:
                        rsi_dbg(ERR_ZONE,
                                "*** Wakeup for Unicast magic packet ***\n");
                        break;
                case RSI_BROADCAST_MAGICPKT:
                        rsi_dbg(ERR_ZONE,
                                "*** Wakeup for Broadcast magic packet ***\n");
                        break;
                case RSI_EAPOL_PKT:
                        rsi_dbg(ERR_ZONE,
                                "*** Wakeup for GTK renewal ***\n");
                        break;
                case RSI_DISCONNECT_PKT:
                        rsi_dbg(ERR_ZONE,
                                "*** Wakeup for Disconnect ***\n");
                        break;
                case RSI_HW_BMISS_PKT:
                        rsi_dbg(ERR_ZONE,
                                "*** Wakeup for HW Beacon miss ***\n");
                        break;
                default:
                        rsi_dbg(ERR_ZONE,
                                "##### Un-intentional Wakeup #####\n");
                        break;
        }
        break;
        case RX_DOT11_MGMT:
                return rsi_mgmt_pkt_to_core(common, msg, msg_len);
        default:
                rsi_dbg(INFO_ZONE, "Received packet type: 0x%x\n", msg_type);
        }
        return 0;
}