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      1 /******************************************************************************
      2  *
      3  *  Copyright (C) 2009-2012 Broadcom Corporation
      4  *
      5  *  Licensed under the Apache License, Version 2.0 (the "License");
      6  *  you may not use this file except in compliance with the License.
      7  *  You may obtain a copy of the License at:
      8  *
      9  *  http://www.apache.org/licenses/LICENSE-2.0
     10  *
     11  *  Unless required by applicable law or agreed to in writing, software
     12  *  distributed under the License is distributed on an "AS IS" BASIS,
     13  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14  *  See the License for the specific language governing permissions and
     15  *  limitations under the License.
     16  *
     17  ******************************************************************************/
     18 
     19 /******************************************************************************
     20  *
     21  *  Filename:      bt_hci_bdroid.h
     22  *
     23  *  Description:   A wrapper header file of bt_hci_lib.h
     24  *
     25  *                 Contains definitions specific for interfacing with Bluedroid
     26  *                 Bluetooth stack
     27  *
     28  ******************************************************************************/
     29 
     30 #pragma once
     31 
     32 #include "bt_hci_lib.h"
     33 
     34 #ifdef HAS_BDROID_BUILDCFG
     35 #include "bdroid_buildcfg.h"
     36 #endif
     37 
     38 /******************************************************************************
     39 **  Constants & Macros
     40 ******************************************************************************/
     41 
     42 #if __STDC_VERSION__ < 199901L
     43 #  ifndef FALSE
     44 #    define FALSE 0
     45 #  endif
     46 #  ifndef TRUE
     47 #    define TRUE (!FALSE)
     48 #  endif
     49 #else
     50 #  include <stdbool.h>
     51 #  ifndef FALSE
     52 #    define FALSE  false
     53 #  endif
     54 #  ifndef TRUE
     55 #    define TRUE   true
     56 #  endif
     57 #endif
     58 
     59 #define HCI_ACL_MAX_SIZE 1024
     60 #define HCI_MAX_FRAME_SIZE (HCI_ACL_MAX_SIZE + 4)
     61 
     62 /* Host/Controller lib internal event ID */
     63 typedef enum {
     64   HC_EVENT_LPM_IDLE_TIMEOUT,
     65 } bthc_event_t;
     66 
     67 #define MSG_CTRL_TO_HC_CMD             0x0100 /* evt mask used by HC_EVENT_TX_CMD */
     68 
     69 /* Message event mask across Host/Controller lib and stack */
     70 #define MSG_EVT_MASK                    0xFF00 /* eq. BT_EVT_MASK */
     71 #define MSG_SUB_EVT_MASK                0x00FF /* eq. BT_SUB_EVT_MASK */
     72 
     73 /* Message event ID passed from Host/Controller lib to stack */
     74 #define MSG_HC_TO_STACK_HCI_ERR        0x1300 /* eq. BT_EVT_TO_BTU_HCIT_ERR */
     75 #define MSG_HC_TO_STACK_HCI_ACL        0x1100 /* eq. BT_EVT_TO_BTU_HCI_ACL */
     76 #define MSG_HC_TO_STACK_HCI_SCO        0x1200 /* eq. BT_EVT_TO_BTU_HCI_SCO */
     77 #define MSG_HC_TO_STACK_HCI_EVT        0x1000 /* eq. BT_EVT_TO_BTU_HCI_EVT */
     78 #define MSG_HC_TO_STACK_L2C_SEG_XMIT   0x1900 /* eq. BT_EVT_TO_BTU_L2C_SEG_XMIT */
     79 
     80 /* Message event ID passed from stack to vendor lib */
     81 #define MSG_STACK_TO_HC_HCI_ACL        0x2100 /* eq. BT_EVT_TO_LM_HCI_ACL */
     82 #define MSG_STACK_TO_HC_HCI_SCO        0x2200 /* eq. BT_EVT_TO_LM_HCI_SCO */
     83 #define MSG_STACK_TO_HC_HCI_CMD        0x2000 /* eq. BT_EVT_TO_LM_HCI_CMD */
     84 
     85 /* Local Bluetooth Controller ID for BR/EDR */
     86 #define LOCAL_BR_EDR_CONTROLLER_ID      0
     87 
     88 /* Definitions of audio codec type
     89  *      inherited from AG callout function "codec" parameter
     90  */
     91 #define SCO_CODEC_NONE      0x0000 /* BTA_AG_CODEC_NONE/BTM_SCO_CODEC_NONE */
     92 #define SCO_CODEC_CVSD      0x0001 /* BTA_AG_CODEC_CVSD/BTM_SCO_CODEC_CVSD */
     93 #define SCO_CODEC_MSBC      0x0002 /* BTA_AG_CODEC_MSBC/BTM_SCO_CODEC_MSBC */
     94 
     95 /******************************************************************************
     96 **  Type definitions and return values
     97 ******************************************************************************/
     98 
     99 typedef struct
    100 {
    101     uint16_t          event;
    102     uint16_t          len;
    103     uint16_t          offset;
    104     uint16_t          layer_specific;
    105     uint8_t           data[];
    106 } HC_BT_HDR;
    107 
    108 #define BT_HC_HDR_SIZE (sizeof(HC_BT_HDR))
    109 
    110 typedef struct _hc_buffer_hdr
    111 {
    112     struct _hc_buffer_hdr *p_next;   /* next buffer in the queue */
    113     uint8_t   reserved1;
    114     uint8_t   reserved2;
    115     uint8_t   reserved3;
    116     uint8_t   reserved4;
    117 } HC_BUFFER_HDR_T;
    118 
    119 #define BT_HC_BUFFER_HDR_SIZE (sizeof(HC_BUFFER_HDR_T))
    120 
    121 /******************************************************************************
    122 **  Extern variables and functions
    123 ******************************************************************************/
    124 
    125 extern bt_hc_callbacks_t *bt_hc_cbacks;
    126 
    127 /******************************************************************************
    128 **  Functions
    129 ******************************************************************************/
    130 
    131 // Called when a buffer has been produced by the serial layer and should be
    132 // processed by the HCI layer.
    133 void bthc_rx_ready(void);
    134 void bthc_tx(HC_BT_HDR *buf);
    135 void bthc_idle_timeout(void);
    136