/******************************************************************************
 *
 *  Copyright (C) 2011-2012 Broadcom Corporation
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at:
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 ******************************************************************************/

/******************************************************************************
 *
 *  This file contains the action functions the NFA_CE state machine.
 *
 ******************************************************************************/
#include <string.h>
#include "nfa_ce_int.h"
#include "nfa_dm_int.h"
#include "nfa_sys_int.h"
#include "nfa_mem_co.h"
#include "ndef_utils.h"
#include "ce_api.h"
#if (NFC_NFCEE_INCLUDED == TRUE)
#include "nfa_ee_int.h"
#endif

/*****************************************************************************
* Protocol-specific event handlers
*****************************************************************************/

/*******************************************************************************
**
** Function         nfa_ce_handle_t3t_evt
**
** Description      Handler for Type-3 tag card emulation events
**
** Returns          Nothing
**
*******************************************************************************/
void nfa_ce_handle_t3t_evt (tCE_EVENT event, tCE_DATA *p_ce_data)
{
    tNFA_CE_CB *p_cb = &nfa_ce_cb;
    tNFA_CONN_EVT_DATA conn_evt;

    NFA_TRACE_DEBUG1 ("nfa_ce_handle_t3t_evt: event 0x%x", event);

    switch (event)
    {
    case CE_T3T_NDEF_UPDATE_START_EVT:
        /* Notify app using callback associated with the active ndef */
        if (p_cb->idx_cur_active == NFA_CE_LISTEN_INFO_IDX_NDEF)
        {
            conn_evt.status = NFA_STATUS_OK;
            (*p_cb->p_active_conn_cback) (NFA_CE_NDEF_WRITE_START_EVT, &conn_evt);
        }
        else
        {
            NFA_TRACE_ERROR0 ("nfa_ce_handle_t3t_evt: got CE_T3T_UPDATE_START_EVT, but no active NDEF");
        }
        break;

    case CE_T3T_NDEF_UPDATE_CPLT_EVT:
        /* Notify app using callback associated with the active ndef */
        if (p_cb->idx_cur_active == NFA_CE_LISTEN_INFO_IDX_NDEF)
        {
            conn_evt.ndef_write_cplt.status = NFA_STATUS_OK;
            conn_evt.ndef_write_cplt.len    = p_ce_data->update_info.length;
            conn_evt.ndef_write_cplt.p_data = p_ce_data->update_info.p_data;
            (*p_cb->p_active_conn_cback) (NFA_CE_NDEF_WRITE_CPLT_EVT, &conn_evt);
        }
        else
        {
            NFA_TRACE_ERROR0 ("nfa_ce_handle_t3t_evt: got CE_T3T_UPDATE_CPLT_EVT, but no active NDEF");
        }
        break;

    case CE_T3T_RAW_FRAME_EVT:
        if (p_cb->idx_cur_active == NFA_CE_LISTEN_INFO_IDX_NDEF)
        {
            conn_evt.data.p_data = (UINT8 *) (p_ce_data->raw_frame.p_data + 1) + p_ce_data->raw_frame.p_data->offset;
            conn_evt.data.len    = p_ce_data->raw_frame.p_data->len;
            (*p_cb->p_active_conn_cback) (NFA_DATA_EVT, &conn_evt);
        }
        else
        {
            conn_evt.ce_data.handle = (NFA_HANDLE_GROUP_CE | ((tNFA_HANDLE)p_cb->idx_cur_active));
            conn_evt.ce_data.p_data = (UINT8 *) (p_ce_data->raw_frame.p_data + 1) + p_ce_data->raw_frame.p_data->offset;
            conn_evt.ce_data.len    = p_ce_data->raw_frame.p_data->len;
            (*p_cb->p_active_conn_cback) (NFA_CE_DATA_EVT, &conn_evt);
        }
        GKI_freebuf (p_ce_data->raw_frame.p_data);
        break;

    default:
        NFA_TRACE_DEBUG1 ("nfa_ce_handle_t3t_evt unhandled event=0x%02x", event);
        break;
    }
}

/*******************************************************************************
**
** Function         nfa_ce_handle_t4t_evt
**
** Description      Handler for Type-4 tag card emulation events (for NDEF case)
**
** Returns          Nothing
**
*******************************************************************************/
void nfa_ce_handle_t4t_evt (tCE_EVENT event, tCE_DATA *p_ce_data)
{
    tNFA_CE_CB *p_cb = &nfa_ce_cb;
    tNFA_CONN_EVT_DATA conn_evt;

    NFA_TRACE_DEBUG1 ("nfa_ce_handle_t4t_evt: event 0x%x", event);

    /* AID for NDEF selected. we had notified the app of activation. */
    p_cb->idx_cur_active = NFA_CE_LISTEN_INFO_IDX_NDEF;
    if (p_cb->listen_info[p_cb->idx_cur_active].flags & NFA_CE_LISTEN_INFO_T4T_ACTIVATE_PND)
    {
        p_cb->p_active_conn_cback = p_cb->listen_info[p_cb->idx_cur_active].p_conn_cback;
    }

    switch (event)
    {
    case CE_T4T_NDEF_UPDATE_START_EVT:
        conn_evt.status = NFA_STATUS_OK;
        (*p_cb->p_active_conn_cback) (NFA_CE_NDEF_WRITE_START_EVT, &conn_evt);
        break;

    case CE_T4T_NDEF_UPDATE_CPLT_EVT:
        conn_evt.ndef_write_cplt.len    = p_ce_data->update_info.length;
        conn_evt.ndef_write_cplt.p_data = p_ce_data->update_info.p_data;

        if (NDEF_MsgValidate (p_ce_data->update_info.p_data, p_ce_data->update_info.length, TRUE) != NDEF_OK)
            conn_evt.ndef_write_cplt.status = NFA_STATUS_FAILED;
        else
            conn_evt.ndef_write_cplt.status = NFA_STATUS_OK;

        (*p_cb->p_active_conn_cback) (NFA_CE_NDEF_WRITE_CPLT_EVT, &conn_evt);
        break;

    case CE_T4T_NDEF_UPDATE_ABORT_EVT:
        conn_evt.ndef_write_cplt.len    = 0;
        conn_evt.ndef_write_cplt.status = NFA_STATUS_FAILED;
        conn_evt.ndef_write_cplt.p_data = NULL;
        (*p_cb->p_active_conn_cback) (NFA_CE_NDEF_WRITE_CPLT_EVT, &conn_evt);
        break;

    default:
        /* CE_T4T_RAW_FRAME_EVT is not used in NFA CE */
        NFA_TRACE_DEBUG1 ("nfa_ce_handle_t4t_evt unhandled event=0x%02x", event);
        break;
    }
}


/*******************************************************************************
**
** Function         nfa_ce_handle_t4t_aid_evt
**
** Description      Handler for Type-4 tag AID events (for AIDs registered using
**                  NFA_CeRegisterT4tAidOnDH)
**
** Returns          Nothing
**
*******************************************************************************/
void nfa_ce_handle_t4t_aid_evt (tCE_EVENT event, tCE_DATA *p_ce_data)
{
    tNFA_CE_CB *p_cb = &nfa_ce_cb;
    UINT8 listen_info_idx;
    tNFA_CONN_EVT_DATA conn_evt;

    NFA_TRACE_DEBUG1 ("nfa_ce_handle_t4t_aid_evt: event 0x%x", event);

    /* Get listen_info for this aid callback */
    for (listen_info_idx=0; listen_info_idx<NFA_CE_LISTEN_INFO_IDX_INVALID; listen_info_idx++)
    {
        if ((p_cb->listen_info[listen_info_idx].flags & NFA_CE_LISTEN_INFO_IN_USE) &&
            (p_cb->listen_info[listen_info_idx].flags & NFA_CE_LISTEN_INFO_T4T_AID) &&
            (p_cb->listen_info[listen_info_idx].t4t_aid_handle == p_ce_data->raw_frame.aid_handle))
        {
            p_cb->idx_cur_active      = listen_info_idx;
            p_cb->p_active_conn_cback = p_cb->listen_info[p_cb->idx_cur_active].p_conn_cback;
            break;
        }
    }

    if (event == CE_T4T_RAW_FRAME_EVT)
    {
        if (listen_info_idx != NFA_CE_LISTEN_INFO_IDX_INVALID)
        {
            /* Found listen_info entry */
            conn_evt.ce_activated.handle =   NFA_HANDLE_GROUP_CE | ((tNFA_HANDLE) p_cb->idx_cur_active);

            /* If we have not notified the app of activation, do so now */
            if (p_cb->listen_info[p_cb->idx_cur_active].flags & NFA_CE_LISTEN_INFO_T4T_ACTIVATE_PND)
            {
                p_cb->listen_info[p_cb->idx_cur_active].flags &= ~NFA_CE_LISTEN_INFO_T4T_ACTIVATE_PND;

                memcpy (&(conn_evt.ce_activated.activate_ntf), &p_cb->activation_params, sizeof (tNFC_ACTIVATE_DEVT));
                conn_evt.ce_activated.status = NFA_STATUS_OK;
                (*p_cb->p_active_conn_cback) (NFA_CE_ACTIVATED_EVT, &conn_evt);
            }

            /* Notify app of AID data */
            conn_evt.ce_data.handle =   NFA_HANDLE_GROUP_CE | ((tNFA_HANDLE)p_cb->idx_cur_active);
            conn_evt.ce_data.p_data = (UINT8 *) (p_ce_data->raw_frame.p_data + 1) + p_ce_data->raw_frame.p_data->offset;
            conn_evt.ce_data.len    = p_ce_data->raw_frame.p_data->len;
            (*p_cb->p_active_conn_cback) (NFA_CE_DATA_EVT, &conn_evt);
        }
        else
        {
            NFA_TRACE_ERROR1 ("nfa_ce_handle_t4t_aid_evt: unable to find listen_info for aid hdl %i", p_ce_data->raw_frame.aid_handle)
        }

        GKI_freebuf (p_ce_data->raw_frame.p_data);
    }
}

/*****************************************************************************
* Discovery configuration and discovery event handlers
*****************************************************************************/

/*******************************************************************************
**
** Function         nfa_ce_discovery_cback
**
** Description      Processing event from discovery callback
**
** Returns          None
**
*******************************************************************************/
void nfa_ce_discovery_cback (tNFA_DM_RF_DISC_EVT event, tNFC_DISCOVER *p_data)
{
    tNFA_CE_MSG ce_msg;
    NFA_TRACE_DEBUG1 ("nfa_ce_discovery_cback(): event:0x%02X", event);

    switch (event)
    {
    case NFA_DM_RF_DISC_START_EVT:
        NFA_TRACE_DEBUG1 ("nfa_ce_handle_disc_start (status=0x%x)", p_data->start);
        break;

    case NFA_DM_RF_DISC_ACTIVATED_EVT:
        ce_msg.activate_ntf.hdr.event = NFA_CE_ACTIVATE_NTF_EVT;
        ce_msg.activate_ntf.p_activation_params = &p_data->activate;
        nfa_ce_hdl_event ((BT_HDR *) &ce_msg);
        break;

    case NFA_DM_RF_DISC_DEACTIVATED_EVT:
        ce_msg.hdr.event = NFA_CE_DEACTIVATE_NTF_EVT;
        ce_msg.hdr.layer_specific = p_data->deactivate.type;
        nfa_ce_hdl_event ((BT_HDR *) &ce_msg);
        break;

    case NFA_DM_RF_DISC_CMD_IDLE_CMPL_EVT:
        /* DH initiated deactivation in NFA_DM_RFST_LISTEN_SLEEP */
        ce_msg.hdr.event = NFA_CE_DEACTIVATE_NTF_EVT;
        ce_msg.hdr.layer_specific = NFA_DEACTIVATE_TYPE_IDLE;
        nfa_ce_hdl_event ((BT_HDR *) &ce_msg);
        break;

    default:
        NFA_TRACE_ERROR0 ("Unexpected event");
        break;
    }
}

/*******************************************************************************
**
** Function         nfc_ce_t3t_set_listen_params
**
** Description      Set t3t listening parameters
**
** Returns          Nothing
**
*******************************************************************************/
void nfc_ce_t3t_set_listen_params (void)
{
    UINT8 i;
    tNFA_CE_CB *p_cb = &nfa_ce_cb;
    UINT8 tlv[32], *p_params;
    UINT8 tlv_size;
    UINT16 t3t_flags2_mask = 0xFFFF;        /* Mask of which T3T_IDs are disabled */
    UINT8 t3t_idx = 0;

    /* Point to start of tlv buffer */
    p_params = tlv;

    /* Set system code and NFCID2 */
    for (i=0; i<NFA_CE_LISTEN_INFO_MAX; i++)
    {
        if ((p_cb->listen_info[i].flags & NFA_CE_LISTEN_INFO_IN_USE) &&
            (p_cb->listen_info[i].protocol_mask & NFA_PROTOCOL_MASK_T3T))
        {
            /* Set tag's system code and NFCID2 */
            UINT8_TO_STREAM (p_params, NFC_PMID_LF_T3T_ID1+t3t_idx);                 /* type */
            UINT8_TO_STREAM (p_params, NCI_PARAM_LEN_LF_T3T_ID);                     /* length */
            UINT16_TO_BE_STREAM (p_params, p_cb->listen_info[i].t3t_system_code);    /* System Code */
            ARRAY_TO_BE_STREAM (p_params,  p_cb->listen_info[i].t3t_nfcid2, NCI_RF_F_UID_LEN);

            /* Set mask for this ID */
            t3t_flags2_mask &= ~((UINT16) (1<<t3t_idx));
            t3t_idx++;
        }
    }

    /* For NCI draft 22+, the polarity of NFC_PMID_LF_T3T_FLAGS2 is flipped */
    t3t_flags2_mask = ~t3t_flags2_mask;

    UINT8_TO_STREAM (p_params, NFC_PMID_LF_T3T_FLAGS2);      /* type */
    UINT8_TO_STREAM (p_params, NCI_PARAM_LEN_LF_T3T_FLAGS2); /* length */
    UINT16_TO_STREAM (p_params, t3t_flags2_mask);            /* Mask of IDs to disable listening */

    tlv_size = (UINT8) (p_params-tlv);
    nfa_dm_check_set_config (tlv_size, (UINT8 *)tlv, FALSE);
}

/*******************************************************************************
**
** Function         nfa_ce_t3t_generate_rand_nfcid
**
** Description      Generate a random NFCID2 for Type-3 tag
**
** Returns          Nothing
**
*******************************************************************************/
void nfa_ce_t3t_generate_rand_nfcid (UINT8 nfcid2[NCI_RF_F_UID_LEN])
{
    UINT32 rand_seed = GKI_get_tick_count ();

    /* For Type-3 tag, nfcid2 starts witn 02:fe */
    nfcid2[0] = 0x02;
    nfcid2[1] = 0xFE;

    /* The remaining 6 bytes are random */
    nfcid2[2] = (UINT8) (rand_seed & 0xFF);
    nfcid2[3] = (UINT8) (rand_seed>>8 & 0xFF);
    rand_seed>>=(rand_seed&3);
    nfcid2[4] = (UINT8) (rand_seed & 0xFF);
    nfcid2[5] = (UINT8) (rand_seed>>8 & 0xFF);
    rand_seed>>=(rand_seed&3);
    nfcid2[6] = (UINT8) (rand_seed & 0xFF);
    nfcid2[7] = (UINT8) (rand_seed>>8 & 0xFF);
}

/*******************************************************************************
**
** Function         nfa_ce_start_listening
**
** Description      Start listening
**
** Returns          NFA_STATUS_OK if successful
**
*******************************************************************************/
tNFA_STATUS nfa_ce_start_listening (void)
{
    tNFA_DM_DISC_TECH_PROTO_MASK listen_mask;
    tNFA_CE_CB    *p_cb = &nfa_ce_cb;
    tNFA_HANDLE   disc_handle;
    UINT8         listen_info_idx;

    /*************************************************************************/
    /* Construct protocol preference list to listen for */

    /* First, get protocol preference for active NDEF (if any) */
    if (  (p_cb->listen_info[NFA_CE_LISTEN_INFO_IDX_NDEF].flags & NFA_CE_LISTEN_INFO_IN_USE)
        &&(p_cb->listen_info[NFA_CE_LISTEN_INFO_IDX_NDEF].rf_disc_handle == NFA_HANDLE_INVALID))
    {
        listen_mask = 0;

        if (p_cb->listen_info[NFA_CE_LISTEN_INFO_IDX_NDEF].protocol_mask & NFA_PROTOCOL_MASK_T3T)
        {
            /* set T3T config params */
            nfc_ce_t3t_set_listen_params ();

            listen_mask |= NFA_DM_DISC_MASK_LF_T3T;
        }

        if (p_cb->listen_info[NFA_CE_LISTEN_INFO_IDX_NDEF].protocol_mask & NFA_PROTOCOL_MASK_ISO_DEP)
        {
            listen_mask |= nfa_ce_cb.isodep_disc_mask;
        }

        disc_handle = nfa_dm_add_rf_discover (listen_mask, NFA_DM_DISC_HOST_ID_DH, nfa_ce_discovery_cback);

        if (disc_handle == NFA_HANDLE_INVALID)
            return (NFA_STATUS_FAILED);
        else
            p_cb->listen_info[NFA_CE_LISTEN_INFO_IDX_NDEF].rf_disc_handle = disc_handle;
    }

    /* Next, add protocols from non-NDEF, if any */
    for (listen_info_idx=0; listen_info_idx<NFA_CE_LISTEN_INFO_IDX_INVALID; listen_info_idx++)
    {
        /* add RF discovery to DM only if it is not added yet */
        if (  (p_cb->listen_info[listen_info_idx].flags & NFA_CE_LISTEN_INFO_IN_USE)
            &&(p_cb->listen_info[listen_info_idx].rf_disc_handle == NFA_HANDLE_INVALID))
        {
            if (p_cb->listen_info[listen_info_idx].flags & NFA_CE_LISTEN_INFO_FELICA)
            {
                /* set T3T config params */
                nfc_ce_t3t_set_listen_params ();

                disc_handle = nfa_dm_add_rf_discover (NFA_DM_DISC_MASK_LF_T3T,
                                                      NFA_DM_DISC_HOST_ID_DH,
                                                      nfa_ce_discovery_cback);

                if (disc_handle == NFA_HANDLE_INVALID)
                    return (NFA_STATUS_FAILED);
                else
                    p_cb->listen_info[listen_info_idx].rf_disc_handle = disc_handle;
            }
            else if (p_cb->listen_info[listen_info_idx].flags & NFA_CE_LISTEN_INFO_T4T_AID)
            {
                disc_handle = nfa_dm_add_rf_discover (nfa_ce_cb.isodep_disc_mask,
                                                       NFA_DM_DISC_HOST_ID_DH,
                                                       nfa_ce_discovery_cback);

                if (disc_handle == NFA_HANDLE_INVALID)
                    return (NFA_STATUS_FAILED);
                else
                    p_cb->listen_info[listen_info_idx].rf_disc_handle = disc_handle;
            }
#if (NFC_NFCEE_INCLUDED == TRUE)
            else if (p_cb->listen_info[listen_info_idx].flags & NFA_CE_LISTEN_INFO_UICC)
            {
                listen_mask = 0;
                if (nfa_ee_is_active (p_cb->listen_info[listen_info_idx].ee_handle))
                {
                    if (p_cb->listen_info[listen_info_idx].tech_mask & NFA_TECHNOLOGY_MASK_A)
                    {
                        listen_mask |= NFA_DM_DISC_MASK_LA_ISO_DEP;
                    }
                    if (p_cb->listen_info[listen_info_idx].tech_mask & NFA_TECHNOLOGY_MASK_B)
                    {
                        listen_mask |= NFA_DM_DISC_MASK_LB_ISO_DEP;
                    }
                    if (p_cb->listen_info[listen_info_idx].tech_mask & NFA_TECHNOLOGY_MASK_F)
                    {
                        listen_mask |= NFA_DM_DISC_MASK_LF_T3T;
                    }
                    if (p_cb->listen_info[listen_info_idx].tech_mask & NFA_TECHNOLOGY_MASK_B_PRIME)
                    {
                        listen_mask |= NFA_DM_DISC_MASK_L_B_PRIME;
                    }
                }

                if (listen_mask)
                {
                    /* Start listening for requested technologies */
                    /* register discovery callback to NFA DM */
                    disc_handle = nfa_dm_add_rf_discover (listen_mask,
                                                          (tNFA_DM_DISC_HOST_ID) (p_cb->listen_info[listen_info_idx].ee_handle &0x00FF),
                                                          nfa_ce_discovery_cback);

                    if (disc_handle == NFA_HANDLE_INVALID)
                        return (NFA_STATUS_FAILED);
                    else
                    {
                        p_cb->listen_info[listen_info_idx].rf_disc_handle  = disc_handle;
                        p_cb->listen_info[listen_info_idx].tech_proto_mask = listen_mask;
                    }
                }
                else
                {
                    NFA_TRACE_ERROR1 ("UICC[0x%x] is not activated",
                                       p_cb->listen_info[listen_info_idx].ee_handle);
                }
            }
#endif
        }
    }

    return NFA_STATUS_OK;
}

/*******************************************************************************
**
** Function         nfa_ce_restart_listen_check
**
** Description      Called on deactivation. Check if any active listen_info entries to listen for
**
** Returns          TRUE if listening is restarted.
**                  FALSE if listening not restarted
**
*******************************************************************************/
BOOLEAN nfa_ce_restart_listen_check (void)
{
    tNFA_CE_CB *p_cb = &nfa_ce_cb;
    UINT8 listen_info_idx;

    /* Check if any active entries in listen_info table */
    for (listen_info_idx=0; listen_info_idx<NFA_CE_LISTEN_INFO_MAX; listen_info_idx++)
    {
        if (p_cb->listen_info[listen_info_idx].flags & NFA_CE_LISTEN_INFO_IN_USE)
            break;
    }

    /* Restart listening if there are any active listen_info entries */
    if (listen_info_idx != NFA_CE_LISTEN_INFO_IDX_INVALID)
    {
        /* restart listening */
        nfa_ce_start_listening ();
    }
    else
    {
        /* No active listen_info entries */
        return FALSE;
    }

    return TRUE;
}

/*******************************************************************************
**
** Function         nfa_ce_remove_listen_info_entry
**
** Description      Remove entry from listen_info table. (when API deregister is called or listen_start failed)
**
**
** Returns          Nothing
**
*******************************************************************************/
void nfa_ce_remove_listen_info_entry (UINT8 listen_info_idx, BOOLEAN notify_app)
{
    tNFA_CE_CB *p_cb = &nfa_ce_cb;
    tNFA_CONN_EVT_DATA conn_evt;

    NFA_TRACE_DEBUG1 ("NFA_CE: removing listen_info entry %i", listen_info_idx);

    /* Notify app that listening has stopped  if requested (for API deregister) */
    /* For LISTEN_START failures, app has already notified of NFA_LISTEN_START_EVT failure */
    if (notify_app)
    {
        if (listen_info_idx == NFA_CE_LISTEN_INFO_IDX_NDEF)
        {
            conn_evt.status = NFA_STATUS_OK;
            (*p_cb->listen_info[listen_info_idx].p_conn_cback) (NFA_CE_LOCAL_TAG_CONFIGURED_EVT, &conn_evt);
        }
#if (NFC_NFCEE_INCLUDED == TRUE)
        else if (p_cb->listen_info[listen_info_idx].flags & NFA_CE_LISTEN_INFO_UICC)
        {
            conn_evt.status = NFA_STATUS_OK;
            (*p_cb->listen_info[listen_info_idx].p_conn_cback) (NFA_CE_UICC_LISTEN_CONFIGURED_EVT, &conn_evt);
        }
#endif
        else
        {
            conn_evt.ce_deregistered.handle = NFA_HANDLE_GROUP_CE | listen_info_idx;
            (*p_cb->listen_info[listen_info_idx].p_conn_cback) (NFA_CE_DEREGISTERED_EVT, &conn_evt);
        }
    }


    /* Handle NDEF stopping */
    if (listen_info_idx == NFA_CE_LISTEN_INFO_IDX_NDEF)
    {
        /* clear NDEF contents */
        CE_T3tSetLocalNDEFMsg (TRUE, 0, 0, NULL, NULL);
        CE_T4tSetLocalNDEFMsg (TRUE, 0, 0, NULL, NULL);

        if (p_cb->listen_info[listen_info_idx].protocol_mask & NFA_PROTOCOL_MASK_T3T)
        {
            p_cb->listen_info[listen_info_idx].protocol_mask = 0;

            /* clear T3T Flags for NDEF */
            nfc_ce_t3t_set_listen_params ();
        }

        /* Free scratch buffer for this NDEF, if one was allocated */
        nfa_ce_free_scratch_buf ();
    }
    /* If stopping listening Felica system code, then clear T3T Flags for this */
    else if (p_cb->listen_info[listen_info_idx].flags & NFA_CE_LISTEN_INFO_FELICA)
    {
        p_cb->listen_info[listen_info_idx].protocol_mask = 0;

        /* clear T3T Flags for registered Felica system code */
        nfc_ce_t3t_set_listen_params ();
    }
    /* If stopping listening T4T AID, then deregister this AID from CE_T4T */
    else if (p_cb->listen_info[listen_info_idx].flags & NFA_CE_LISTEN_INFO_T4T_AID)
    {
        /* Free t4t_aid_cback used by this AID */
        CE_T4tDeregisterAID (p_cb->listen_info[listen_info_idx].t4t_aid_handle);
    }

    if (p_cb->listen_info[listen_info_idx].rf_disc_handle != NFA_HANDLE_INVALID )
    {
        nfa_dm_delete_rf_discover (p_cb->listen_info[listen_info_idx].rf_disc_handle);
        p_cb->listen_info[listen_info_idx].rf_disc_handle = NFA_HANDLE_INVALID;
    }

    /* Remove entry from listen_info table */
    p_cb->listen_info[listen_info_idx].flags = 0;
}

/*******************************************************************************
**
** Function         nfa_ce_free_scratch_buf
**
** Description      free scratch buffer (if one is allocated)
**
** Returns          nothing
**
*******************************************************************************/
void nfa_ce_free_scratch_buf (void)
{
    tNFA_CE_CB *p_cb = &nfa_ce_cb;
    if (p_cb->p_scratch_buf)
    {
        nfa_mem_co_free (p_cb->p_scratch_buf);
        p_cb->p_scratch_buf = NULL;
    }
}

/*******************************************************************************
**
** Function         nfa_ce_realloc_scratch_buffer
**
** Description      Set scratch buffer if necessary (for writable NDEF messages)
**
** Returns          NFA_STATUS_OK if successful
**
*******************************************************************************/
tNFA_STATUS nfa_ce_realloc_scratch_buffer (void)
{
    tNFA_STATUS result = NFA_STATUS_OK;

    /* If current NDEF message is read-only, then we do not need a scratch buffer */
    if (nfa_ce_cb.listen_info[NFA_CE_LISTEN_INFO_IDX_NDEF].flags & NFC_CE_LISTEN_INFO_READONLY_NDEF)
    {
        /* Free existing scratch buffer, if one was allocated */
        nfa_ce_free_scratch_buf ();
    }
    else
    {
        /* If no scratch buffer allocated yet, or if current scratch buffer size is different from current ndef size, */
        /* then allocate a new scratch buffer. */
        if ((nfa_ce_cb.p_scratch_buf == NULL) ||
            (nfa_ce_cb.scratch_buf_size != nfa_ce_cb.ndef_max_size))
        {
            /* Free existing scratch buffer, if one was allocated */
            nfa_ce_free_scratch_buf ();

            if ((nfa_ce_cb.p_scratch_buf = (UINT8 *) nfa_mem_co_alloc (nfa_ce_cb.ndef_max_size)) != NULL)
            {
                nfa_ce_cb.scratch_buf_size = nfa_ce_cb.ndef_max_size;
            }
            else
            {
                NFA_TRACE_ERROR1 ("Unable to allocate scratch buffer for writable NDEF message (%i bytes)", nfa_ce_cb.ndef_max_size);
                result=NFA_STATUS_FAILED;
            }
        }
    }

    return (result);
}

/*******************************************************************************
**
** Function         nfa_ce_set_content
**
** Description      Set NDEF contents
**
** Returns          void
**
*******************************************************************************/
tNFC_STATUS nfa_ce_set_content (void)
{
    tNFC_STATUS status;
    tNFA_CE_CB *p_cb = &nfa_ce_cb;
    tNFA_PROTOCOL_MASK ndef_protocol_mask;
    BOOLEAN readonly;

    /* Check if listening for NDEF */
    if (!(p_cb->listen_info[NFA_CE_LISTEN_INFO_IDX_NDEF].flags & NFA_CE_LISTEN_INFO_IN_USE))
    {
        /* Not listening for NDEF */
        return (NFA_STATUS_OK);
    }

    NFA_TRACE_DEBUG0 ("Setting NDEF contents");

    readonly = (p_cb->listen_info[NFA_CE_LISTEN_INFO_IDX_NDEF].flags & NFC_CE_LISTEN_INFO_READONLY_NDEF) ? TRUE : FALSE;
    ndef_protocol_mask = p_cb->listen_info[NFA_CE_LISTEN_INFO_IDX_NDEF].protocol_mask;

    /* Allocate a scratch buffer if needed (for handling write-requests) */
    if ((status = nfa_ce_realloc_scratch_buffer ()) == NFA_STATUS_OK)
    {
        if ((ndef_protocol_mask & NFA_PROTOCOL_MASK_T3T) && (status == NFA_STATUS_OK))
        {
            /* Type3Tag    - NFC-F */
            status = CE_T3tSetLocalNDEFMsg (readonly,
                                            p_cb->ndef_max_size,
                                            p_cb->ndef_cur_size,
                                            p_cb->p_ndef_data,
                                            p_cb->p_scratch_buf);
        }

        if ((ndef_protocol_mask & NFA_PROTOCOL_MASK_ISO_DEP) && (status == NFA_STATUS_OK))
        {
            /* ISODEP/4A,4B- NFC-A or NFC-B */
            status = CE_T4tSetLocalNDEFMsg (readonly,
                                            p_cb->ndef_max_size,
                                            p_cb->ndef_cur_size,
                                            p_cb->p_ndef_data,
                                            p_cb->p_scratch_buf);
        }
    }

    if (status != NFA_STATUS_OK)
    {
        /* clear NDEF contents */
        CE_T3tSetLocalNDEFMsg (TRUE, 0, 0, NULL, NULL);
        CE_T4tSetLocalNDEFMsg (TRUE, 0, 0, NULL, NULL);

        NFA_TRACE_ERROR1 ("Unable to set contents (error %02x)", status);
    }

    return (status);
}


/*******************************************************************************
**
** Function         nfa_ce_activate_ntf
**
** Description      Action when activation has occured (NFA_CE_ACTIVATE_NTF_EVT)
**
**                  - Find the listen_info entry assocated with this activation
**                      - get the app callback that registered for this listen
**                      - call CE_SetActivatedTagType with activation parameters
**
** Returns          TRUE (message buffer to be freed by caller)
**
*******************************************************************************/
BOOLEAN nfa_ce_activate_ntf (tNFA_CE_MSG *p_ce_msg)
{
    tNFC_ACTIVATE_DEVT *p_activation_params = p_ce_msg->activate_ntf.p_activation_params;
    tNFA_CE_CB *p_cb = &nfa_ce_cb;
    tNFA_CONN_EVT_DATA conn_evt;
    tCE_CBACK *p_ce_cback = NULL;
    UINT16 t3t_system_code = 0xFFFF;
    UINT8 listen_info_idx = NFA_CE_LISTEN_INFO_IDX_INVALID;
    UINT8 *p_nfcid2 = NULL;
    UINT8 i;
    BOOLEAN t4t_activate_pending = FALSE;

    NFA_TRACE_DEBUG1 ("nfa_ce_activate_ntf () protocol=%d", p_ce_msg->activate_ntf.p_activation_params->protocol);

    /* Tag is in listen active state */
    p_cb->flags |= NFA_CE_FLAGS_LISTEN_ACTIVE_SLEEP;

    /* Store activation parameters */
    memcpy (&p_cb->activation_params, p_activation_params, sizeof (tNFC_ACTIVATE_DEVT));

    /* Find the listen_info entry corresponding to this activation */
    if (p_cb->activation_params.protocol == NFA_PROTOCOL_T3T)
    {
        /* Look for T3T entries in listen_info table that match activated system code and NFCID2 */
        for (listen_info_idx=0; listen_info_idx<NFA_CE_LISTEN_INFO_IDX_INVALID; listen_info_idx++)
        {
            /* Look for entries with NFA_PROTOCOL_MASK_T3T */
            if (p_cb->listen_info[listen_info_idx].flags & NFA_CE_LISTEN_INFO_IN_USE)
            {
                if (p_cb->listen_info[listen_info_idx].protocol_mask & NFA_PROTOCOL_MASK_T3T)
                {
                    /* Check if system_code and nfcid2 that matches activation params */
                    p_nfcid2 = p_cb->listen_info[listen_info_idx].t3t_nfcid2;
                    t3t_system_code = p_cb->listen_info[listen_info_idx].t3t_system_code;

                    /* Compare NFCID2 (note: NFCC currently does not return system code in activation parameters) */
                    if ((memcmp (p_nfcid2, p_cb->activation_params.rf_tech_param.param.lf.nfcid2, NCI_RF_F_UID_LEN)==0)
                         /* && (t3t_system_code == p_ce_msg->activation.p_activate_info->rf_tech_param.param.lf.system_code) */)
                    {
                        /* Found listen_info corresponding to this activation */
                        break;
                    }
                }

                /* Check if entry is for T3T UICC */
                if ((p_cb->listen_info[listen_info_idx].flags & NFA_CE_LISTEN_INFO_UICC) &&
                    (p_cb->listen_info[listen_info_idx].tech_mask & NFA_TECHNOLOGY_MASK_F))
                {
                    break;
                }
            }
        }

        p_ce_cback = nfa_ce_handle_t3t_evt;
    }
    else if (p_cb->activation_params.protocol == NFA_PROTOCOL_ISO_DEP)
    {
        p_ce_cback = nfa_ce_handle_t4t_evt;

        /* For T4T, we do not know which AID will be selected yet */


        /* For all T4T entries in listen_info, set T4T_ACTIVATE_NOTIFY_PENDING flag */
        for (i=0; i<NFA_CE_LISTEN_INFO_IDX_INVALID; i++)
        {
            if (p_cb->listen_info[i].flags & NFA_CE_LISTEN_INFO_IN_USE)
            {
                if (p_cb->listen_info[i].protocol_mask & NFA_PROTOCOL_MASK_ISO_DEP)
                {
                    /* Found listen_info table entry for T4T raw listen */
                    p_cb->listen_info[i].flags |= NFA_CE_LISTEN_INFO_T4T_ACTIVATE_PND;

                    /* If entry if for NDEF, select it, so application gets nofitifed of ACTIVATE_EVT now */
                    if (i == NFA_CE_LISTEN_INFO_IDX_NDEF)
                    {
                        listen_info_idx = NFA_CE_LISTEN_INFO_IDX_NDEF;
                    }

                    t4t_activate_pending = TRUE;
                }

#if (NFC_NFCEE_INCLUDED == TRUE)
                /* Check if entry is for ISO_DEP UICC */
                if (p_cb->listen_info[i].flags & NFA_CE_LISTEN_INFO_UICC)
                {
                    if (  (  (p_cb->activation_params.rf_tech_param.mode == NFC_DISCOVERY_TYPE_LISTEN_A)
                           &&(p_cb->listen_info[i].tech_proto_mask & NFA_DM_DISC_MASK_LA_ISO_DEP)  )
                                                       ||
                          (  (p_cb->activation_params.rf_tech_param.mode == NFC_DISCOVERY_TYPE_LISTEN_B)
                           &&(p_cb->listen_info[i].tech_proto_mask & NFA_DM_DISC_MASK_LB_ISO_DEP)  )  )
                    {
                        listen_info_idx = i;
                    }
                }
#endif
            }
        }

        /* If listening for ISO_DEP, but not NDEF nor UICC, then notify CE module now and wait for reader/writer to SELECT an AID */
        if (t4t_activate_pending && (listen_info_idx == NFA_CE_LISTEN_INFO_IDX_INVALID))
        {
            CE_SetActivatedTagType (&p_cb->activation_params, 0, p_ce_cback);
            return TRUE;
        }
    }
    else if (p_cb->activation_params.intf_param.type == NFC_INTERFACE_EE_DIRECT_RF)
    {
        /* search any entry listening UICC */
        for (i=0; i<NFA_CE_LISTEN_INFO_IDX_INVALID; i++)
        {
            if (  (p_cb->listen_info[i].flags & NFA_CE_LISTEN_INFO_IN_USE)
                &&(p_cb->listen_info[i].flags & NFA_CE_LISTEN_INFO_UICC))
            {
                listen_info_idx = i;
                break;
            }
        }
    }

    /* Check if valid listen_info entry was found */
    if (  (listen_info_idx == NFA_CE_LISTEN_INFO_IDX_INVALID)
        ||((listen_info_idx == NFA_CE_LISTEN_INFO_IDX_NDEF) && !(p_cb->listen_info[NFA_CE_LISTEN_INFO_IDX_NDEF].flags & NFA_CE_LISTEN_INFO_IN_USE)))
    {
        NFA_TRACE_DEBUG1 ("No listen_info found for this activation. listen_info_idx=%d", listen_info_idx);
        return (TRUE);
    }

    p_cb->listen_info[listen_info_idx].flags &= ~NFA_CE_LISTEN_INFO_T4T_ACTIVATE_PND;

    /* Get CONN_CBACK for this activation */
    p_cb->p_active_conn_cback = p_cb->listen_info[listen_info_idx].p_conn_cback;
    p_cb->idx_cur_active = listen_info_idx;

    if (  (p_cb->idx_cur_active == NFA_CE_LISTEN_INFO_IDX_NDEF)
        ||(p_cb->listen_info[p_cb->idx_cur_active].flags & NFA_CE_LISTEN_INFO_UICC))
    {
        memcpy (&(conn_evt.activated.activate_ntf), &p_cb->activation_params, sizeof (tNFC_ACTIVATE_DEVT));

        (*p_cb->p_active_conn_cback) (NFA_ACTIVATED_EVT, &conn_evt);
    }
    else
    {
        conn_evt.ce_activated.handle =   NFA_HANDLE_GROUP_CE | ((tNFA_HANDLE)p_cb->idx_cur_active);
        memcpy (&(conn_evt.ce_activated.activate_ntf), &p_cb->activation_params, sizeof (tNFC_ACTIVATE_DEVT));
        conn_evt.ce_activated.status = NFA_STATUS_OK;

        (*p_cb->p_active_conn_cback) (NFA_CE_ACTIVATED_EVT, &conn_evt);
    }

    /* we don't need any CE subsystem in case of NFCEE direct RF interface */
    if (p_ce_cback)
    {
        /* Notify CE subsystem */
        CE_SetActivatedTagType (&p_cb->activation_params, t3t_system_code, p_ce_cback);
    }
    return TRUE;
}

/*******************************************************************************
**
** Function         nfa_ce_deactivate_ntf
**
** Description      Action when deactivate occurs. (NFA_CE_DEACTIVATE_NTF_EVT)
**
**                  - If deactivate due to API deregister, then remove its entry from
**                      listen_info table
**
**                  - If NDEF was modified while activated, then restore
**                      original NDEF contents
**
**                  - Restart listening (if any active entries in listen table)
**
** Returns          TRUE (message buffer to be freed by caller)
**
*******************************************************************************/
BOOLEAN nfa_ce_deactivate_ntf (tNFA_CE_MSG *p_ce_msg)
{
    tNFC_DEACT_TYPE deact_type = (tNFC_DEACT_TYPE) p_ce_msg->hdr.layer_specific;
    tNFA_CE_CB *p_cb = &nfa_ce_cb;
    tNFA_CONN_EVT_DATA conn_evt;
    UINT8 i;

    NFA_TRACE_DEBUG1 ("nfa_ce_deactivate_ntf () deact_type=%d", deact_type);

    /* Check if deactivating to SLEEP mode */
    if (  (deact_type == NFC_DEACTIVATE_TYPE_SLEEP)
        ||(deact_type == NFC_DEACTIVATE_TYPE_SLEEP_AF)  )
    {
        /* notify deactivated as sleep and wait for reactivation or deactivation to idle */
        conn_evt.deactivated.type =  deact_type;

        /* if T4T AID application has not been selected then p_active_conn_cback could be NULL */
        if (p_cb->p_active_conn_cback)
            (*p_cb->p_active_conn_cback) (NFA_DEACTIVATED_EVT, &conn_evt);

        return TRUE;
    }
    else
    {
        deact_type = NFC_DEACTIVATE_TYPE_IDLE;
    }

    /* Tag is in idle state */
    p_cb->flags &= ~NFA_CE_FLAGS_LISTEN_ACTIVE_SLEEP;

    /* First, notify app of deactivation */
    for (i=0; i<NFA_CE_LISTEN_INFO_IDX_INVALID; i++)
    {
        if (p_cb->listen_info[i].flags & NFA_CE_LISTEN_INFO_IN_USE)
        {
            if (  (p_cb->listen_info[i].flags & NFA_CE_LISTEN_INFO_UICC)
                &&(i == p_cb->idx_cur_active)  )
            {
                conn_evt.deactivated.type =  deact_type;
                (*p_cb->p_active_conn_cback) (NFA_DEACTIVATED_EVT, &conn_evt);
            }
            else if (  (p_cb->activation_params.protocol == NFA_PROTOCOL_ISO_DEP)
                     &&(p_cb->listen_info[i].protocol_mask & NFA_PROTOCOL_MASK_ISO_DEP))
            {
                /* Don't send NFA_DEACTIVATED_EVT if NFA_ACTIVATED_EVT wasn't sent */
                if (!(p_cb->listen_info[i].flags & NFA_CE_LISTEN_INFO_T4T_ACTIVATE_PND))
                {
                    if (i == NFA_CE_LISTEN_INFO_IDX_NDEF)
                    {
                        conn_evt.deactivated.type =  deact_type;
                        (*p_cb->p_active_conn_cback) (NFA_DEACTIVATED_EVT, &conn_evt);
                    }
                    else
                    {
                        conn_evt.ce_deactivated.handle = NFA_HANDLE_GROUP_CE | ((tNFA_HANDLE)i);
                        conn_evt.ce_deactivated.type   = deact_type;
                        (*p_cb->p_active_conn_cback) (NFA_CE_DEACTIVATED_EVT, &conn_evt);
                    }
                }
            }
            else if (  (p_cb->activation_params.protocol == NFA_PROTOCOL_T3T)
                     &&(p_cb->listen_info[i].protocol_mask & NFA_PROTOCOL_MASK_T3T))
            {
                if (i == NFA_CE_LISTEN_INFO_IDX_NDEF)
                {
                    conn_evt.deactivated.type = deact_type;
                    (*p_cb->p_active_conn_cback) (NFA_DEACTIVATED_EVT, &conn_evt);
                }
                else
                {
                    conn_evt.ce_deactivated.handle = NFA_HANDLE_GROUP_CE | ((tNFA_HANDLE)i);
                    conn_evt.ce_deactivated.type   = deact_type;
                    (*p_cb->p_active_conn_cback) (NFA_CE_DEACTIVATED_EVT, &conn_evt);
                }
            }
        }
    }

    /* Check if app initiated the deactivation (due to API deregister). If so, remove entry from listen_info table. */
    if (p_cb->flags & NFA_CE_FLAGS_APP_INIT_DEACTIVATION)
    {
        p_cb->flags &= ~NFA_CE_FLAGS_APP_INIT_DEACTIVATION;
        nfa_ce_remove_listen_info_entry (p_cb->idx_cur_active, TRUE);
    }

    p_cb->p_active_conn_cback = NULL;
    p_cb->idx_cur_active      = NFA_CE_LISTEN_INFO_IDX_INVALID;

    /* Restart listening (if any listen_info entries are still active) */
    nfa_ce_restart_listen_check ();

    return TRUE;
}

/*******************************************************************************
**
** Function         nfa_ce_disable_local_tag
**
** Description      Disable local NDEF tag
**                      - clean up control block
**                      - remove NDEF discovery configuration
**
** Returns          Nothing
**
*******************************************************************************/
void nfa_ce_disable_local_tag (void)
{
    tNFA_CE_CB *p_cb = &nfa_ce_cb;
    tNFA_CONN_EVT_DATA evt_data;

    NFA_TRACE_DEBUG0 ("Disabling local NDEF tag");

    /* If local NDEF tag is in use, then disable it */
    if (p_cb->listen_info[NFA_CE_LISTEN_INFO_IDX_NDEF].flags & NFA_CE_LISTEN_INFO_IN_USE)
    {
        /* NDEF Tag is in not idle state */
        if (  (p_cb->flags & NFA_CE_FLAGS_LISTEN_ACTIVE_SLEEP)
            &&(p_cb->idx_cur_active == NFA_CE_LISTEN_INFO_IDX_NDEF)  )
        {
            /* wait for deactivation */
            p_cb->flags |= NFA_CE_FLAGS_APP_INIT_DEACTIVATION;
            nfa_dm_rf_deactivate (NFA_DEACTIVATE_TYPE_IDLE);
        }
        else
        {
            /* Notify DM to stop listening for ndef  */
            if (p_cb->listen_info[NFA_CE_LISTEN_INFO_IDX_NDEF].rf_disc_handle != NFA_HANDLE_INVALID)
            {
                nfa_dm_delete_rf_discover (p_cb->listen_info[NFA_CE_LISTEN_INFO_IDX_NDEF].rf_disc_handle);
                p_cb->listen_info[NFA_CE_LISTEN_INFO_IDX_NDEF].rf_disc_handle = NFA_HANDLE_INVALID;
            }
            nfa_ce_remove_listen_info_entry (NFA_CE_LISTEN_INFO_IDX_NDEF, TRUE);
        }
    }
    else
    {
        /* Notify application */
        evt_data.status = NFA_STATUS_OK;
        nfa_dm_conn_cback_event_notify (NFA_CE_LOCAL_TAG_CONFIGURED_EVT, &evt_data);
    }
}

/*******************************************************************************
**
** Function         nfa_ce_api_cfg_local_tag
**
** Description      Configure local NDEF tag
**                      - store ndef attributes in to control block
**                      - update discovery configuration
**
** Returns          TRUE (message buffer to be freed by caller)
**
*******************************************************************************/
BOOLEAN nfa_ce_api_cfg_local_tag (tNFA_CE_MSG *p_ce_msg)
{
    tNFA_CE_CB *p_cb = &nfa_ce_cb;
    tNFA_CONN_EVT_DATA conn_evt;

    /* Check if disabling local tag */
    if (p_ce_msg->local_tag.protocol_mask == 0)
    {
        nfa_ce_disable_local_tag ();
        return TRUE;
    }

    NFA_TRACE_DEBUG5 ("Configuring local NDEF tag: protocol_mask=%01x cur_size=%i, max_size=%i, readonly=%i",
            p_ce_msg->local_tag.protocol_mask,
            p_ce_msg->local_tag.ndef_cur_size,
            p_ce_msg->local_tag.ndef_max_size,
            p_ce_msg->local_tag.read_only,
            p_ce_msg->local_tag.uid_len);

    /* If local tag was already set, then check if NFA_CeConfigureLocalTag called to change protocol mask  */
    if (  (p_cb->listen_info[NFA_CE_LISTEN_INFO_IDX_NDEF].flags & NFA_CE_LISTEN_INFO_IN_USE)
        &&(p_cb->listen_info[NFA_CE_LISTEN_INFO_IDX_NDEF].rf_disc_handle != NFA_HANDLE_INVALID)
        &&((p_cb->listen_info[NFA_CE_LISTEN_INFO_IDX_NDEF].protocol_mask & (NFA_PROTOCOL_MASK_T3T | NFA_PROTOCOL_MASK_ISO_DEP))
            != (p_ce_msg->local_tag.protocol_mask & (NFA_PROTOCOL_MASK_T3T | NFA_PROTOCOL_MASK_ISO_DEP)))  )
    {
        /* Listening for different tag protocols. Stop discovery */
        nfa_dm_delete_rf_discover (p_cb->listen_info[NFA_CE_LISTEN_INFO_IDX_NDEF].rf_disc_handle);
        p_cb->listen_info[NFA_CE_LISTEN_INFO_IDX_NDEF].rf_disc_handle = NFA_HANDLE_INVALID;

        /* clear NDEF contents */
        CE_T3tSetLocalNDEFMsg (TRUE, 0, 0, NULL, NULL);
        CE_T4tSetLocalNDEFMsg (TRUE, 0, 0, NULL, NULL);
    }

    /* Store NDEF info to control block */
    p_cb->p_ndef_data   = p_ce_msg->local_tag.p_ndef_data;
    p_cb->ndef_cur_size = p_ce_msg->local_tag.ndef_cur_size;
    p_cb->ndef_max_size = p_ce_msg->local_tag.ndef_max_size;

    /* Fill in LISTEN_INFO entry for NDEF */
    p_cb->listen_info[NFA_CE_LISTEN_INFO_IDX_NDEF].flags = NFA_CE_LISTEN_INFO_IN_USE;
    p_cb->listen_info[NFA_CE_LISTEN_INFO_IDX_NDEF].protocol_mask = p_ce_msg->local_tag.protocol_mask;
    p_cb->listen_info[NFA_CE_LISTEN_INFO_IDX_NDEF].p_conn_cback = nfa_dm_conn_cback_event_notify;
    if (p_ce_msg->local_tag.read_only)
        p_cb->listen_info[NFA_CE_LISTEN_INFO_IDX_NDEF].flags |= NFC_CE_LISTEN_INFO_READONLY_NDEF;
    p_cb->listen_info[NFA_CE_LISTEN_INFO_IDX_NDEF].t3t_system_code = T3T_SYSTEM_CODE_NDEF;

    /* Set NDEF contents */
    conn_evt.status = NFA_STATUS_FAILED;

    if (p_cb->listen_info[NFA_CE_LISTEN_INFO_IDX_NDEF].protocol_mask & (NFA_PROTOCOL_MASK_T3T | NFA_PROTOCOL_MASK_ISO_DEP))
    {
        /* Ok to set contents now */
        if (nfa_ce_set_content () != NFA_STATUS_OK)
        {
            NFA_TRACE_ERROR0 ("nfa_ce_api_cfg_local_tag: could not set contents");
            nfa_dm_conn_cback_event_notify (NFA_CE_LOCAL_TAG_CONFIGURED_EVT, &conn_evt);
            return TRUE;
        }

        /* Start listening and notify app of status */
        conn_evt.status = nfa_ce_start_listening ();
        nfa_dm_conn_cback_event_notify (NFA_CE_LOCAL_TAG_CONFIGURED_EVT, &conn_evt);
    }

    return TRUE;
}

/*******************************************************************************
**
** Function         nfa_ce_api_reg_listen
**
** Description      Register listen params for Felica system code, T4T AID,
**                  or UICC
**
** Returns          TRUE (message buffer to be freed by caller)
**
*******************************************************************************/
BOOLEAN nfa_ce_api_reg_listen (tNFA_CE_MSG *p_ce_msg)
{
    tNFA_CE_CB *p_cb = &nfa_ce_cb;
    tNFA_CONN_EVT_DATA conn_evt;
    UINT8 i;
    UINT8 listen_info_idx = NFA_CE_LISTEN_INFO_IDX_INVALID;

    NFA_TRACE_DEBUG1 ("Registering UICC/Felica/Type-4 tag listener. Type=%i", p_ce_msg->reg_listen.listen_type);

    /* Look for available entry in listen_info table                                        */
    /* - If registering UICC listen, make sure there isn't another entry for the ee_handle  */
    /* - Skip over entry 0 (reserved for local NDEF tag)                                    */
    for (i=1; i<NFA_CE_LISTEN_INFO_MAX; i++)
    {
        if (  (p_ce_msg->reg_listen.listen_type == NFA_CE_REG_TYPE_UICC)
            &&(p_cb->listen_info[i].flags & NFA_CE_LISTEN_INFO_IN_USE)
            &&(p_cb->listen_info[i].flags & NFA_CE_LISTEN_INFO_UICC)
            &&(p_cb->listen_info[i].ee_handle == p_ce_msg->reg_listen.ee_handle)  )
        {

            NFA_TRACE_ERROR1 ("UICC (0x%x) listening already specified", p_ce_msg->reg_listen.ee_handle);
            conn_evt.status = NFA_STATUS_FAILED;
            nfa_dm_conn_cback_event_notify (NFA_CE_UICC_LISTEN_CONFIGURED_EVT, &conn_evt);
            return TRUE;
        }
        /* If this is a free entry, and we haven't found one yet, remember it */
        else if (  (!(p_cb->listen_info[i].flags & NFA_CE_LISTEN_INFO_IN_USE))
                 &&(listen_info_idx == NFA_CE_LISTEN_INFO_IDX_INVALID)  )
        {
            listen_info_idx = i;
        }
    }

    /* Add new entry to listen_info table */
    if (listen_info_idx == NFA_CE_LISTEN_INFO_IDX_INVALID)
    {
        NFA_TRACE_ERROR1 ("Maximum listen callbacks exceeded (%i)", NFA_CE_LISTEN_INFO_MAX);

        if (p_ce_msg->reg_listen.listen_type == NFA_CE_REG_TYPE_UICC)
        {
            conn_evt.status = NFA_STATUS_FAILED;
            nfa_dm_conn_cback_event_notify (NFA_CE_UICC_LISTEN_CONFIGURED_EVT, &conn_evt);
        }
        else
        {
            /* Notify application */
            conn_evt.ce_registered.handle = NFA_HANDLE_INVALID;
            conn_evt.ce_registered.status = NFA_STATUS_FAILED;
            (*p_ce_msg->reg_listen.p_conn_cback) (NFA_CE_REGISTERED_EVT, &conn_evt);
        }
        return TRUE;
    }
    else
    {
        NFA_TRACE_DEBUG1 ("NFA_CE: adding listen_info entry %i", listen_info_idx);

        /* Store common parameters */
        /* Mark entry as 'in-use', and NFA_CE_LISTEN_INFO_START_NTF_PND */
        /* (LISTEN_START_EVT will be notified when discovery successfully starts */
        p_cb->listen_info[listen_info_idx].flags = NFA_CE_LISTEN_INFO_IN_USE | NFA_CE_LISTEN_INFO_START_NTF_PND;
        p_cb->listen_info[listen_info_idx].rf_disc_handle = NFA_HANDLE_INVALID;
        p_cb->listen_info[listen_info_idx].protocol_mask = 0;

        /* Store type-specific parameters */
        switch (p_ce_msg->reg_listen.listen_type)
        {
        case NFA_CE_REG_TYPE_ISO_DEP:
            p_cb->listen_info[listen_info_idx].protocol_mask = NFA_PROTOCOL_MASK_ISO_DEP;
            p_cb->listen_info[listen_info_idx].flags |= NFA_CE_LISTEN_INFO_T4T_AID;
            p_cb->listen_info[listen_info_idx].p_conn_cback =p_ce_msg->reg_listen.p_conn_cback;

            /* Register this AID with CE_T4T */
            if ((p_cb->listen_info[listen_info_idx].t4t_aid_handle = CE_T4tRegisterAID (p_ce_msg->reg_listen.aid_len,
                                                                                        p_ce_msg->reg_listen.aid,
                                                                                        nfa_ce_handle_t4t_aid_evt)) == 0xFF)
            {
                NFA_TRACE_ERROR0 ("Unable to register AID");
                p_cb->listen_info[listen_info_idx].flags = 0;

                /* Notify application */
                conn_evt.ce_registered.handle = NFA_HANDLE_INVALID;
                conn_evt.ce_registered.status = NFA_STATUS_FAILED;
                (*p_ce_msg->reg_listen.p_conn_cback) (NFA_CE_REGISTERED_EVT, &conn_evt);

                return TRUE;
            }
            break;

        case NFA_CE_REG_TYPE_FELICA:
            p_cb->listen_info[listen_info_idx].protocol_mask = NFA_PROTOCOL_MASK_T3T;
            p_cb->listen_info[listen_info_idx].flags |= NFA_CE_LISTEN_INFO_FELICA;
            p_cb->listen_info[listen_info_idx].p_conn_cback = p_ce_msg->reg_listen.p_conn_cback;

            /* Store system code and nfcid2 */
            p_cb->listen_info[listen_info_idx].t3t_system_code = p_ce_msg->reg_listen.system_code;
            memcpy (p_cb->listen_info[listen_info_idx].t3t_nfcid2, p_ce_msg->reg_listen.nfcid2, NCI_RF_F_UID_LEN);
            break;

#if (NFC_NFCEE_INCLUDED == TRUE)
        case NFA_CE_REG_TYPE_UICC:
            p_cb->listen_info[listen_info_idx].flags |= NFA_CE_LISTEN_INFO_UICC;
            p_cb->listen_info[listen_info_idx].p_conn_cback = &nfa_dm_conn_cback_event_notify;

            /* Store EE handle and Tech */
            p_cb->listen_info[listen_info_idx].ee_handle = p_ce_msg->reg_listen.ee_handle;
            p_cb->listen_info[listen_info_idx].tech_mask = p_ce_msg->reg_listen.tech_mask;
            break;
#endif
        }
    }

    /* Start listening */
    if ((conn_evt.status = nfa_ce_start_listening ()) != NFA_STATUS_OK)
    {
        NFA_TRACE_ERROR0 ("nfa_ce_api_reg_listen: unable to register new listen params with DM");
        p_cb->listen_info[listen_info_idx].flags = 0;
    }

    /* Nofitify app of status */
    if (p_ce_msg->reg_listen.listen_type == NFA_CE_REG_TYPE_UICC)
    {
        (*p_cb->listen_info[listen_info_idx].p_conn_cback) (NFA_CE_UICC_LISTEN_CONFIGURED_EVT, &conn_evt);
    }
    else
    {
        conn_evt.ce_registered.handle = NFA_HANDLE_GROUP_CE | listen_info_idx;
        NFA_TRACE_DEBUG1 ("nfa_ce_api_reg_listen: registered handle 0x%04X", conn_evt.ce_registered.handle);
        (*p_cb->listen_info[listen_info_idx].p_conn_cback) (NFA_CE_REGISTERED_EVT, &conn_evt);
    }

    return TRUE;
}

/*******************************************************************************
**
** Function         nfa_ce_api_dereg_listen
**
** Description      Deregister listen params
**
** Returns          TRUE (message buffer to be freed by caller)
**
*******************************************************************************/
BOOLEAN nfa_ce_api_dereg_listen (tNFA_CE_MSG *p_ce_msg)
{
    tNFA_CE_CB *p_cb = &nfa_ce_cb;
    UINT8 listen_info_idx;
    tNFA_CONN_EVT_DATA conn_evt;

#if (NFC_NFCEE_INCLUDED == TRUE)
    /* Check if deregistering UICC , or virtual secure element listen */
    if (p_ce_msg->dereg_listen.listen_info == NFA_CE_LISTEN_INFO_UICC)
    {
        /* Deregistering UICC listen. Look for listen_info for this UICC ee handle */
        for (listen_info_idx = 0; listen_info_idx < NFA_CE_LISTEN_INFO_MAX; listen_info_idx++)
        {
            if (  (p_cb->listen_info[listen_info_idx].flags & NFA_CE_LISTEN_INFO_IN_USE)
                &&(p_cb->listen_info[listen_info_idx].flags & NFA_CE_LISTEN_INFO_UICC)
                &&(p_cb->listen_info[listen_info_idx].ee_handle == p_ce_msg->dereg_listen.handle)  )
            {
                /* UICC is in not idle state */
                if (  (p_cb->flags & NFA_CE_FLAGS_LISTEN_ACTIVE_SLEEP)
                    &&(p_cb->idx_cur_active == listen_info_idx)  )
                {
                    /* wait for deactivation */
                    p_cb->flags |= NFA_CE_FLAGS_APP_INIT_DEACTIVATION;
                    nfa_dm_rf_deactivate (NFA_DEACTIVATE_TYPE_IDLE);
                }
                else
                {
                    /* Stop listening */
                    if (p_cb->listen_info[listen_info_idx].rf_disc_handle != NFA_HANDLE_INVALID)
                    {
                        nfa_dm_delete_rf_discover (p_cb->listen_info[listen_info_idx].rf_disc_handle);
                        p_cb->listen_info[listen_info_idx].rf_disc_handle = NFA_HANDLE_INVALID;
                    }

                    /* Remove entry and notify application */
                    nfa_ce_remove_listen_info_entry (listen_info_idx, TRUE);
                }
                break;
            }
        }

        if (listen_info_idx == NFA_CE_LISTEN_INFO_MAX)
        {
            NFA_TRACE_ERROR0 ("nfa_ce_api_dereg_listen (): cannot find listen_info for UICC");
            conn_evt.status = NFA_STATUS_INVALID_PARAM;
            nfa_dm_conn_cback_event_notify (NFA_CE_UICC_LISTEN_CONFIGURED_EVT, &conn_evt);
        }
    }
    else
#endif
    {
        /* Deregistering virtual secure element listen */
        listen_info_idx = p_ce_msg->dereg_listen.handle & NFA_HANDLE_MASK;

        if (  (listen_info_idx < NFA_CE_LISTEN_INFO_MAX)
            &&(p_cb->listen_info[listen_info_idx].flags & NFA_CE_LISTEN_INFO_IN_USE))
        {
            /* virtual secure element is in not idle state */
            if (  (p_cb->flags & NFA_CE_FLAGS_LISTEN_ACTIVE_SLEEP)
                &&(p_cb->idx_cur_active == listen_info_idx)  )
            {
                /* wait for deactivation */
                p_cb->flags |= NFA_CE_FLAGS_APP_INIT_DEACTIVATION;
                nfa_dm_rf_deactivate (NFA_DEACTIVATE_TYPE_IDLE);
            }
            else
            {
                /* Stop listening */
                if (p_cb->listen_info[listen_info_idx].rf_disc_handle != NFA_HANDLE_INVALID)
                {
                    nfa_dm_delete_rf_discover (p_cb->listen_info[listen_info_idx].rf_disc_handle);
                    p_cb->listen_info[listen_info_idx].rf_disc_handle = NFA_HANDLE_INVALID;
                }

                /* Remove entry and notify application */
                nfa_ce_remove_listen_info_entry (listen_info_idx, TRUE);
            }
        }
        else
        {
            NFA_TRACE_ERROR0 ("nfa_ce_api_dereg_listen (): cannot find listen_info for Felica/T4tAID");
            conn_evt.status = NFA_STATUS_INVALID_PARAM;
            nfa_dm_conn_cback_event_notify (NFA_CE_DEREGISTERED_EVT, &conn_evt);
        }
    }

    return TRUE;
}

/*******************************************************************************
**
** Function         nfa_ce_api_cfg_isodep_tech
**
** Description      Configure the technologies (NFC-A and/or NFC-B) to listen for
**                  ISO-DEP
**
** Returns          TRUE (message buffer to be freed by caller)
**
*******************************************************************************/
BOOLEAN nfa_ce_api_cfg_isodep_tech (tNFA_CE_MSG *p_ce_msg)
{
    nfa_ce_cb.isodep_disc_mask  = 0;
    if (p_ce_msg->hdr.layer_specific & NFA_TECHNOLOGY_MASK_A)
        nfa_ce_cb.isodep_disc_mask  = NFA_DM_DISC_MASK_LA_ISO_DEP;

    if (p_ce_msg->hdr.layer_specific & NFA_TECHNOLOGY_MASK_B)
        nfa_ce_cb.isodep_disc_mask |= NFA_DM_DISC_MASK_LB_ISO_DEP;
    return TRUE;
}