/******************************************************************************
 *
 *  Copyright (C) 2004-2012 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 is the private interface file for the BTA data gateway.
 *
 ******************************************************************************/
#ifndef BTA_PAN_INT_H
#define BTA_PAN_INT_H

#include "bta_sys.h"
#include "bta_pan_api.h"

/*****************************************************************************
**  Constants
*****************************************************************************/


/* PAN events */
enum
{
    /* these events are handled by the state machine */
    BTA_PAN_API_CLOSE_EVT = BTA_SYS_EVT_START(BTA_ID_PAN),
    BTA_PAN_CI_TX_READY_EVT,
    BTA_PAN_CI_RX_READY_EVT,
    BTA_PAN_CI_TX_FLOW_EVT,
    BTA_PAN_CI_RX_WRITE_EVT,
    BTA_PAN_CI_RX_WRITEBUF_EVT,
    BTA_PAN_CONN_OPEN_EVT,
    BTA_PAN_CONN_CLOSE_EVT,
    BTA_PAN_BNEP_FLOW_ENABLE_EVT,
    BTA_PAN_RX_FROM_BNEP_READY_EVT,

    /* these events are handled outside of the state machine */
    BTA_PAN_API_ENABLE_EVT,
    BTA_PAN_API_DISABLE_EVT,
    BTA_PAN_API_SET_ROLE_EVT,
    BTA_PAN_API_OPEN_EVT
};

/* state machine states */
enum
{
    BTA_PAN_IDLE_ST,
    BTA_PAN_OPEN_ST,
    BTA_PAN_CLOSING_ST
};


/*****************************************************************************
**  Data types
*****************************************************************************/

/* data type for BTA_PAN_API_ENABLE_EVT */
typedef struct
{
    BT_HDR              hdr;                        /* Event header */
    tBTA_PAN_CBACK     *p_cback;                    /* PAN callback function */
} tBTA_PAN_API_ENABLE;

/* data type for BTA_PAN_API_REG_ROLE_EVT */
typedef struct
{
    BT_HDR              hdr;                             /* Event header */
    char                user_name[BTA_SERVICE_NAME_LEN+1];   /* Service name */
    char                gn_name[BTA_SERVICE_NAME_LEN+1];     /* Service name */
    char                nap_name[BTA_SERVICE_NAME_LEN+1];    /* Service name */
    tBTA_PAN_ROLE       role;
    UINT8               user_app_id;
    UINT8               gn_app_id;
    UINT8               nap_app_id;
    tBTA_SEC            user_sec_mask;                   /* Security mask */
    tBTA_SEC            gn_sec_mask;                     /* Security mask */
    tBTA_SEC            nap_sec_mask;                    /* Security mask */


} tBTA_PAN_API_SET_ROLE;

/* data type for BTA_PAN_API_OPEN_EVT */
typedef struct
{
    BT_HDR              hdr;                        /* Event header */
    tBTA_PAN_ROLE        local_role;                 /* local role */
    tBTA_PAN_ROLE        peer_role;                  /* peer role */
    BD_ADDR             bd_addr;                    /* peer bdaddr */
} tBTA_PAN_API_OPEN;

/* data type for BTA_PAN_CI_TX_FLOW_EVT */
typedef struct
{
    BT_HDR          hdr;                    /* Event header */
    BOOLEAN         enable;                 /* Flow control setting */
} tBTA_PAN_CI_TX_FLOW;

/* data type for BTA_PAN_CONN_OPEN_EVT */
typedef struct
{
    BT_HDR          hdr;        /* Event header */
    tPAN_RESULT     result;

} tBTA_PAN_CONN;


/* union of all data types */
typedef union
{
    BT_HDR                   hdr;
    tBTA_PAN_API_ENABLE      api_enable;
    tBTA_PAN_API_SET_ROLE    api_set_role;
    tBTA_PAN_API_OPEN        api_open;
    tBTA_PAN_CI_TX_FLOW      ci_tx_flow;
    tBTA_PAN_CONN            conn;
} tBTA_PAN_DATA;

/* state machine control block */
typedef struct
{
    BD_ADDR                 bd_addr;        /* peer bdaddr */
    BUFFER_Q                data_queue;     /* Queue of buffers waiting to be passed to application */
    UINT16                  handle;         /* BTA PAN/BNEP handle */
    BOOLEAN                 in_use;         /* scb in use */
    tBTA_SEC                sec_mask;       /* Security mask */
    BOOLEAN                 pan_flow_enable;/* BNEP flow control state */
    BOOLEAN                 app_flow_enable;/* Application flow control state */
    UINT8                   state;          /* State machine state */
    tBTA_PAN_ROLE            local_role;     /* local role */
    tBTA_PAN_ROLE            peer_role;      /* peer role */
    UINT8                    app_id;         /* application id for the connection */

} tBTA_PAN_SCB;


/* main control block */
typedef struct
{
    tBTA_PAN_SCB    scb[BTA_PAN_NUM_CONN];          /* state machine control blocks */
    tBTA_PAN_CBACK *p_cback;                        /* PAN callback function */
    UINT8            app_id[3];                      /* application id for PAN roles */
    UINT8           flow_mask;                      /* Data flow mask */
    UINT8           q_level;                        /* queue level set by application for TX data */

} tBTA_PAN_CB;


/* pan data param */
typedef struct
{
    BT_HDR  hdr;
    BD_ADDR src;
    BD_ADDR dst;
    UINT16  protocol;
    BOOLEAN ext;
    BOOLEAN forward;

} tBTA_PAN_DATA_PARAMS;


/*****************************************************************************
**  Global data
*****************************************************************************/

/* PAN control block */

#if BTA_DYNAMIC_MEMORY == FALSE
extern tBTA_PAN_CB  bta_pan_cb;
#else
extern tBTA_PAN_CB *bta_pan_cb_ptr;
#define bta_pan_cb (*bta_pan_cb_ptr)
#endif

/*****************************************************************************
**  Function prototypes
*****************************************************************************/
extern tBTA_PAN_SCB *bta_pan_scb_alloc(void);
extern void bta_pan_scb_dealloc(tBTA_PAN_SCB *p_scb);
extern UINT8 bta_pan_scb_to_idx(tBTA_PAN_SCB *p_scb);
extern tBTA_PAN_SCB *bta_pan_scb_by_handle(UINT16 handle);
extern BOOLEAN bta_pan_hdl_event(BT_HDR *p_msg);

/* action functions */
extern void bta_pan_enable(tBTA_PAN_DATA *p_data);
extern void bta_pan_disable(void);
extern void bta_pan_set_role(tBTA_PAN_DATA *p_data);
extern void bta_pan_open(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data);
extern void bta_pan_api_close(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data);
extern void bta_pan_set_shutdown(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data);
extern void bta_pan_rx_path(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data);
extern void bta_pan_tx_path(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data);
extern void bta_pan_tx_flow(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data);
extern void bta_pan_conn_open(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data);
extern void bta_pan_conn_close(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data);
extern void bta_pan_writebuf(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data);
extern void bta_pan_write_buf(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data);
extern void bta_pan_free_buf(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data);


#endif /* BTA_PAN_INT_H */