/******************************************************************************
 *
 * Copyright(c) 2015 Intel Deutschland GmbH
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *  * Neither the name Intel Corporation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *****************************************************************************/
#include "src/iwlwifi/fw/api/tof.h"

#include "src/iwlwifi/mvm/mvm.h"

#define IWL_MVM_TOF_RANGE_REQ_MAX_ID 256

void iwl_mvm_tof_init(struct iwl_mvm* mvm) {
#if 0  // NEEDS_PORTING
    struct iwl_mvm_tof_data* tof_data = &mvm->tof_data;

    if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TOF_SUPPORT)) { return; }

    memset(tof_data, 0, sizeof(*tof_data));

    tof_data->tof_cfg.sub_grp_cmd_id = cpu_to_le32(TOF_CONFIG_CMD);

#ifdef CPTCFG_IWLWIFI_DEBUGFS
    if (IWL_MVM_TOF_IS_RESPONDER) {
        tof_data->responder_cfg.sub_grp_cmd_id = cpu_to_le32(TOF_RESPONDER_CONFIG_CMD);
        tof_data->responder_cfg.sta_id = IWL_MVM_INVALID_STA;
    }
#endif

    tof_data->range_req.sub_grp_cmd_id = cpu_to_le32(TOF_RANGE_REQ_CMD);
    tof_data->range_req.req_timeout = 1;
    tof_data->range_req.initiator = 1;
    tof_data->range_req.report_policy = 3;

    tof_data->range_req_ext.sub_grp_cmd_id = cpu_to_le32(TOF_RANGE_REQ_EXT_CMD);

    mvm->tof_data.active_range_request = IWL_MVM_TOF_RANGE_REQ_MAX_ID;
    mvm->init_status |= IWL_MVM_INIT_STATUS_TOF_INIT_COMPLETE;
#endif  // NEEDS_PORTING
}

void iwl_mvm_tof_clean(struct iwl_mvm* mvm) {
  struct iwl_mvm_tof_data* tof_data = &mvm->tof_data;

  if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TOF_SUPPORT) ||
      !(mvm->init_status & IWL_MVM_INIT_STATUS_TOF_INIT_COMPLETE)) {
    return;
  }

  memset(tof_data, 0, sizeof(*tof_data));
  mvm->tof_data.active_range_request = IWL_MVM_TOF_RANGE_REQ_MAX_ID;
  mvm->init_status &= ~IWL_MVM_INIT_STATUS_TOF_INIT_COMPLETE;
}

#if 0  // NEEDS_PORTING
static void iwl_tof_iterator(void* _data, uint8_t* mac, struct ieee80211_vif* vif) {
    bool* enabled = _data;

    /* non bss vif exists */
    if (ieee80211_vif_type_p2p(vif) != NL80211_IFTYPE_STATION) { *enabled = false; }
}

int iwl_mvm_tof_config_cmd(struct iwl_mvm* mvm) {
    struct iwl_tof_config_cmd* cmd = &mvm->tof_data.tof_cfg;
    bool enabled;

    iwl_assert_lock_held(&mvm->mutex);

    if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TOF_SUPPORT)) { return -EINVAL; }

    ieee80211_iterate_active_interfaces_atomic(mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
                                               iwl_tof_iterator, &enabled);
    if (!enabled) {
        IWL_DEBUG_INFO(mvm, "ToF is not supported (non bss vif)\n");
        return -EINVAL;
    }

    mvm->tof_data.active_range_request = IWL_MVM_TOF_RANGE_REQ_MAX_ID;
    return iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(TOF_CMD, IWL_ALWAYS_LONG_GROUP, 0), 0, sizeof(*cmd),
                                cmd);
}

int iwl_mvm_tof_range_abort_cmd(struct iwl_mvm* mvm, uint8_t id) {
    struct iwl_tof_range_abort_cmd cmd = {
        .sub_grp_cmd_id = cpu_to_le32(TOF_RANGE_ABORT_CMD),
        .request_id = id,
    };

    iwl_assert_lock_held(&mvm->mutex);

    if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TOF_SUPPORT)) { return -EINVAL; }

    if (id != mvm->tof_data.active_range_request) {
        IWL_ERR(mvm, "Invalid range request id %d (active %d)\n", id,
                mvm->tof_data.active_range_request);
        return -EINVAL;
    }

    /* after abort is sent there's no active request anymore */
    mvm->tof_data.active_range_request = IWL_MVM_TOF_RANGE_REQ_MAX_ID;

    return iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(TOF_CMD, IWL_ALWAYS_LONG_GROUP, 0), 0, sizeof(cmd),
                                &cmd);
}

#ifdef CPTCFG_IWLWIFI_DEBUGFS
int iwl_mvm_tof_responder_cmd(struct iwl_mvm* mvm, struct ieee80211_vif* vif) {
    struct iwl_tof_responder_config_cmd* cmd = &mvm->tof_data.responder_cfg;
    struct iwl_mvm_vif* mvmvif = iwl_mvm_vif_from_mac80211(vif);

    iwl_assert_lock_held(&mvm->mutex);

    if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TOF_SUPPORT)) { return -EINVAL; }

    if (vif->p2p || vif->type != NL80211_IFTYPE_AP || !mvmvif->ap_ibss_active) {
        IWL_ERR(mvm, "Cannot start responder, not in AP mode\n");
        return -EIO;
    }

    cmd->sta_id = mvmvif->bcast_sta.sta_id;
    memcpy(cmd->bssid, vif->addr, ETH_ALEN);
    return iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(TOF_CMD, IWL_ALWAYS_LONG_GROUP, 0), 0, sizeof(*cmd),
                                cmd);
}
#endif

int iwl_mvm_tof_range_request_cmd(struct iwl_mvm* mvm, struct ieee80211_vif* vif) {
    struct iwl_host_cmd cmd = {
        .id = iwl_cmd_id(TOF_CMD, IWL_ALWAYS_LONG_GROUP, 0),
        .len =
            {
                sizeof(mvm->tof_data.range_req),
            },
        /* no copy because of the command size */
        .dataflags =
            {
                IWL_HCMD_DFL_NOCOPY,
            },
    };

    iwl_assert_lock_held(&mvm->mutex);

    if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TOF_SUPPORT)) { return -EINVAL; }

    if (ieee80211_vif_type_p2p(vif) != NL80211_IFTYPE_STATION) {
        IWL_ERR(mvm, "Cannot send range request, not STA mode\n");
        return -EIO;
    }

    /* nesting of range requests is not supported in FW */
    if (mvm->tof_data.active_range_request != IWL_MVM_TOF_RANGE_REQ_MAX_ID) {
        IWL_ERR(mvm, "Cannot send range req, already active req %d\n",
                mvm->tof_data.active_range_request);
        return -EIO;
    }

    mvm->tof_data.active_range_request = mvm->tof_data.range_req.request_id;

    cmd.data[0] = &mvm->tof_data.range_req;
    return iwl_mvm_send_cmd(mvm, &cmd);
}

int iwl_mvm_tof_range_request_ext_cmd(struct iwl_mvm* mvm, struct ieee80211_vif* vif) {
    iwl_assert_lock_held(&mvm->mutex);

    if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TOF_SUPPORT)) { return -EINVAL; }

    if (ieee80211_vif_type_p2p(vif) != NL80211_IFTYPE_STATION) {
        IWL_ERR(mvm, "Cannot send ext range req, not in STA mode\n");
        return -EIO;
    }

    return iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(TOF_CMD, IWL_ALWAYS_LONG_GROUP, 0), 0,
                                sizeof(mvm->tof_data.range_req_ext), &mvm->tof_data.range_req_ext);
}

static int iwl_mvm_tof_range_resp(struct iwl_mvm* mvm, void* data) {
    struct iwl_tof_range_rsp_ntfy* resp = (void*)data;

    if (resp->request_id != mvm->tof_data.active_range_request) {
        IWL_ERR(mvm, "Request id mismatch, got %d, active %d\n", resp->request_id,
                mvm->tof_data.active_range_request);
        return -EIO;
    }

    memcpy(&mvm->tof_data.range_resp, resp, sizeof(struct iwl_tof_range_rsp_ntfy));
    mvm->tof_data.active_range_request = IWL_MVM_TOF_RANGE_REQ_MAX_ID;

    return 0;
}

static int iwl_mvm_tof_mcsi_notif(struct iwl_mvm* mvm, void* data) {
    struct iwl_tof_mcsi_notif* resp = (struct iwl_tof_mcsi_notif*)data;

    IWL_DEBUG_INFO(mvm, "MCSI notification, token %d\n", resp->token);
    return 0;
}

static int iwl_mvm_tof_nb_report_notif(struct iwl_mvm* mvm, void* data) {
    struct iwl_tof_neighbor_report* report = (struct iwl_tof_neighbor_report*)data;

    IWL_DEBUG_INFO(mvm, "NB report, bssid %pM, token %d, status 0x%x\n", report->bssid,
                   report->request_token, report->status);
    return 0;
}

void iwl_mvm_tof_resp_handler(struct iwl_mvm* mvm, struct iwl_rx_cmd_buffer* rxb) {
    struct iwl_rx_packet* pkt = rxb_addr(rxb);
    struct iwl_tof_gen_resp_cmd* resp = (void*)pkt->data;

    iwl_assert_lock_held(&mvm->mutex);

    switch (le32_to_cpu(resp->sub_grp_cmd_id)) {
    case TOF_RANGE_RESPONSE_NOTIF:
        iwl_mvm_tof_range_resp(mvm, resp->data);
        break;
    case TOF_MCSI_DEBUG_NOTIF:
        iwl_mvm_tof_mcsi_notif(mvm, resp->data);
        break;
    case TOF_NEIGHBOR_REPORT_RSP_NOTIF:
        iwl_mvm_tof_nb_report_notif(mvm, resp->data);
        break;
    default:
        IWL_ERR(mvm, "Unknown sub-group command 0x%x\n", resp->sub_grp_cmd_id);
        break;
    }
}
#endif  // NEEDS_PORTING