1/******************************************************************************
2 *
3 *  Copyright (C) 2014 Google, Inc.
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#pragma once
20
21#include <base/bind.h>
22#include <base/tracked_objects.h>
23#include <stdbool.h>
24
25#include "bt_types.h"
26#include "osi/include/allocator.h"
27#include "osi/include/fixed_queue.h"
28#include "osi/include/future.h"
29#include "osi/include/osi.h"
30
31static const char HCI_MODULE[] = "hci_module";
32
33///// LEGACY DEFINITIONS /////
34
35/* Message event mask across Host/Controller lib and stack */
36#define MSG_EVT_MASK 0xFF00     /* eq. BT_EVT_MASK */
37#define MSG_SUB_EVT_MASK 0x00FF /* eq. BT_SUB_EVT_MASK */
38
39/* Message event ID passed from Host/Controller lib to stack */
40#define MSG_HC_TO_STACK_HCI_ERR 0x1300      /* eq. BT_EVT_TO_BTU_HCIT_ERR */
41#define MSG_HC_TO_STACK_HCI_ACL 0x1100      /* eq. BT_EVT_TO_BTU_HCI_ACL */
42#define MSG_HC_TO_STACK_HCI_SCO 0x1200      /* eq. BT_EVT_TO_BTU_HCI_SCO */
43#define MSG_HC_TO_STACK_HCI_EVT 0x1000      /* eq. BT_EVT_TO_BTU_HCI_EVT */
44#define MSG_HC_TO_STACK_L2C_SEG_XMIT 0x1900 /* BT_EVT_TO_BTU_L2C_SEG_XMIT */
45
46/* Message event ID passed from stack to vendor lib */
47#define MSG_STACK_TO_HC_HCI_ACL 0x2100 /* eq. BT_EVT_TO_LM_HCI_ACL */
48#define MSG_STACK_TO_HC_HCI_SCO 0x2200 /* eq. BT_EVT_TO_LM_HCI_SCO */
49#define MSG_STACK_TO_HC_HCI_CMD 0x2000 /* eq. BT_EVT_TO_LM_HCI_CMD */
50
51/* Local Bluetooth Controller ID for BR/EDR */
52#define LOCAL_BR_EDR_CONTROLLER_ID 0
53
54///// END LEGACY DEFINITIONS /////
55
56typedef struct hci_hal_t hci_hal_t;
57typedef struct btsnoop_t btsnoop_t;
58typedef struct controller_t controller_t;
59typedef struct hci_inject_t hci_inject_t;
60typedef struct packet_fragmenter_t packet_fragmenter_t;
61typedef struct vendor_t vendor_t;
62
63typedef unsigned char* bdaddr_t;
64typedef uint16_t command_opcode_t;
65
66typedef void (*command_complete_cb)(BT_HDR* response, void* context);
67typedef void (*command_status_cb)(uint8_t status, BT_HDR* command,
68                                  void* context);
69
70typedef struct hci_t {
71  // Set the callback that the HCI layer uses to send data upwards
72  void (*set_data_cb)(
73      base::Callback<void(const tracked_objects::Location&, BT_HDR*)>
74          send_data_cb);
75
76  // Send a command through the HCI layer
77  void (*transmit_command)(BT_HDR* command,
78                           command_complete_cb complete_callback,
79                           command_status_cb status_cb, void* context);
80
81  future_t* (*transmit_command_futured)(BT_HDR* command);
82
83  // Send some data downward through the HCI layer
84  void (*transmit_downward)(uint16_t type, void* data);
85} hci_t;
86
87const hci_t* hci_layer_get_interface();
88
89const hci_t* hci_layer_get_test_interface(
90    const allocator_t* buffer_allocator_interface,
91    const btsnoop_t* btsnoop_interface,
92    const packet_fragmenter_t* packet_fragmenter_interface);
93
94void post_to_hci_message_loop(const tracked_objects::Location& from_here,
95                              BT_HDR* p_msg);
96
97void hci_layer_cleanup_interface();
98