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 <stdbool.h> 22 23 #include "osi/include/allocator.h" 24 #include "osi/include/data_dispatcher.h" 25 #include "osi/include/fixed_queue.h" 26 #include "osi/include/future.h" 27 #include "osi/include/osi.h" 28 #include "bt_types.h" 29 30 static const char HCI_MODULE[] = "hci_module"; 31 32 ///// LEGACY DEFINITIONS ///// 33 34 /* Message event mask across Host/Controller lib and stack */ 35 #define MSG_EVT_MASK 0xFF00 /* eq. BT_EVT_MASK */ 36 #define MSG_SUB_EVT_MASK 0x00FF /* eq. BT_SUB_EVT_MASK */ 37 38 /* Message event ID passed from Host/Controller lib to stack */ 39 #define MSG_HC_TO_STACK_HCI_ERR 0x1300 /* eq. BT_EVT_TO_BTU_HCIT_ERR */ 40 #define MSG_HC_TO_STACK_HCI_ACL 0x1100 /* eq. BT_EVT_TO_BTU_HCI_ACL */ 41 #define MSG_HC_TO_STACK_HCI_SCO 0x1200 /* eq. BT_EVT_TO_BTU_HCI_SCO */ 42 #define MSG_HC_TO_STACK_HCI_EVT 0x1000 /* eq. BT_EVT_TO_BTU_HCI_EVT */ 43 #define MSG_HC_TO_STACK_L2C_SEG_XMIT 0x1900 /* eq. BT_EVT_TO_BTU_L2C_SEG_XMIT */ 44 45 /* Message event ID passed from stack to vendor lib */ 46 #define MSG_STACK_TO_HC_HCI_ACL 0x2100 /* eq. BT_EVT_TO_LM_HCI_ACL */ 47 #define MSG_STACK_TO_HC_HCI_SCO 0x2200 /* eq. BT_EVT_TO_LM_HCI_SCO */ 48 #define MSG_STACK_TO_HC_HCI_CMD 0x2000 /* eq. BT_EVT_TO_LM_HCI_CMD */ 49 50 /* Local Bluetooth Controller ID for BR/EDR */ 51 #define LOCAL_BR_EDR_CONTROLLER_ID 0 52 53 ///// END LEGACY DEFINITIONS ///// 54 55 typedef struct hci_hal_t hci_hal_t; 56 typedef struct btsnoop_t btsnoop_t; 57 typedef struct controller_t controller_t; 58 typedef struct hci_inject_t hci_inject_t; 59 typedef struct packet_fragmenter_t packet_fragmenter_t; 60 typedef struct vendor_t vendor_t; 61 typedef struct low_power_manager_t low_power_manager_t; 62 63 typedef unsigned char * bdaddr_t; 64 typedef uint16_t command_opcode_t; 65 66 typedef enum { 67 LPM_DISABLE, 68 LPM_ENABLE, 69 LPM_WAKE_ASSERT, 70 LPM_WAKE_DEASSERT 71 } low_power_command_t; 72 73 typedef void (*command_complete_cb)(BT_HDR *response, void *context); 74 typedef void (*command_status_cb)(uint8_t status, BT_HDR *command, void *context); 75 76 typedef struct hci_t { 77 // Send a low power command, if supported and the low power manager is enabled. 78 void (*send_low_power_command)(low_power_command_t command); 79 80 // Do the postload sequence (call after the rest of the BT stack initializes). 81 void (*do_postload)(void); 82 83 // Register with this data dispatcher to receive events flowing upward out of the HCI layer 84 data_dispatcher_t *event_dispatcher; 85 86 // Set the queue to receive ACL data in 87 void (*set_data_queue)(fixed_queue_t *queue); 88 89 // Send a command through the HCI layer 90 void (*transmit_command)( 91 BT_HDR *command, 92 command_complete_cb complete_callback, 93 command_status_cb status_cb, 94 void *context 95 ); 96 97 future_t *(*transmit_command_futured)(BT_HDR *command); 98 99 // Send some data downward through the HCI layer 100 void (*transmit_downward)(data_dispatcher_type_t type, void *data); 101 } hci_t; 102 103 const hci_t *hci_layer_get_interface(); 104 105 const hci_t *hci_layer_get_test_interface( 106 const allocator_t *buffer_allocator_interface, 107 const hci_hal_t *hal_interface, 108 const btsnoop_t *btsnoop_interface, 109 const hci_inject_t *hci_inject_interface, 110 const packet_fragmenter_t *packet_fragmenter_interface, 111 const vendor_t *vendor_interface, 112 const low_power_manager_t *low_power_manager_interface); 113 114 void hci_layer_cleanup_interface(); 115