| /****************************************************************************** |
| * |
| * Copyright (C) 2014 Google, Inc. |
| * |
| * 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. |
| * |
| ******************************************************************************/ |
| |
| #define LOG_TAG "bt_controller" |
| |
| #include "device/include/controller.h" |
| |
| #include <base/logging.h> |
| |
| #include "bt_types.h" |
| #include "btcore/include/event_mask.h" |
| #include "btcore/include/module.h" |
| #include "btcore/include/version.h" |
| #include "hcimsgs.h" |
| #include "osi/include/future.h" |
| #include "stack/include/btm_ble_api.h" |
| |
| const bt_event_mask_t BLE_EVENT_MASK = { |
| {0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x1E, 0x7f}}; |
| |
| const bt_event_mask_t CLASSIC_EVENT_MASK = {HCI_DUMO_EVENT_MASK_EXT}; |
| |
| // TODO(zachoverflow): factor out into common module |
| const uint8_t SCO_HOST_BUFFER_SIZE = 0xff; |
| |
| #define HCI_SUPPORTED_COMMANDS_ARRAY_SIZE 64 |
| #define MAX_FEATURES_CLASSIC_PAGE_COUNT 3 |
| #define BLE_SUPPORTED_STATES_SIZE 8 |
| #define BLE_SUPPORTED_FEATURES_SIZE 8 |
| #define MAX_LOCAL_SUPPORTED_CODECS_SIZE 8 |
| |
| static const hci_t* hci; |
| static const hci_packet_factory_t* packet_factory; |
| static const hci_packet_parser_t* packet_parser; |
| |
| static bt_bdaddr_t address; |
| static bt_version_t bt_version; |
| |
| static uint8_t supported_commands[HCI_SUPPORTED_COMMANDS_ARRAY_SIZE]; |
| static bt_device_features_t features_classic[MAX_FEATURES_CLASSIC_PAGE_COUNT]; |
| static uint8_t last_features_classic_page_index; |
| |
| static uint16_t acl_data_size_classic; |
| static uint16_t acl_data_size_ble; |
| static uint16_t acl_buffer_count_classic; |
| static uint8_t acl_buffer_count_ble; |
| |
| static uint8_t ble_white_list_size; |
| static uint8_t ble_resolving_list_max_size; |
| static uint8_t ble_supported_states[BLE_SUPPORTED_STATES_SIZE]; |
| static bt_device_features_t features_ble; |
| static uint16_t ble_suggested_default_data_length; |
| static uint16_t ble_maxium_advertising_data_length; |
| static uint8_t ble_number_of_supported_advertising_sets; |
| static uint8_t local_supported_codecs[MAX_LOCAL_SUPPORTED_CODECS_SIZE]; |
| static uint8_t number_of_local_supported_codecs = 0; |
| |
| static bool readable; |
| static bool ble_supported; |
| static bool simple_pairing_supported; |
| static bool secure_connections_supported; |
| |
| #define AWAIT_COMMAND(command) \ |
| static_cast<BT_HDR*>(future_await(hci->transmit_command_futured(command))) |
| |
| // Module lifecycle functions |
| |
| static future_t* start_up(void) { |
| BT_HDR* response; |
| |
| // Send the initial reset command |
| response = AWAIT_COMMAND(packet_factory->make_reset()); |
| packet_parser->parse_generic_command_complete(response); |
| |
| // Request the classic buffer size next |
| response = AWAIT_COMMAND(packet_factory->make_read_buffer_size()); |
| packet_parser->parse_read_buffer_size_response( |
| response, &acl_data_size_classic, &acl_buffer_count_classic); |
| |
| // Tell the controller about our buffer sizes and buffer counts next |
| // TODO(zachoverflow): factor this out. eww l2cap contamination. And why just |
| // a hardcoded 10? |
| response = AWAIT_COMMAND(packet_factory->make_host_buffer_size( |
| L2CAP_MTU_SIZE, SCO_HOST_BUFFER_SIZE, L2CAP_HOST_FC_ACL_BUFS, 10)); |
| |
| packet_parser->parse_generic_command_complete(response); |
| |
| // Read the local version info off the controller next, including |
| // information such as manufacturer and supported HCI version |
| response = AWAIT_COMMAND(packet_factory->make_read_local_version_info()); |
| packet_parser->parse_read_local_version_info_response(response, &bt_version); |
| |
| // Read the bluetooth address off the controller next |
| response = AWAIT_COMMAND(packet_factory->make_read_bd_addr()); |
| packet_parser->parse_read_bd_addr_response(response, &address); |
| |
| // Request the controller's supported commands next |
| response = |
| AWAIT_COMMAND(packet_factory->make_read_local_supported_commands()); |
| packet_parser->parse_read_local_supported_commands_response( |
| response, supported_commands, HCI_SUPPORTED_COMMANDS_ARRAY_SIZE); |
| |
| // Read page 0 of the controller features next |
| uint8_t page_number = 0; |
| response = AWAIT_COMMAND( |
| packet_factory->make_read_local_extended_features(page_number)); |
| packet_parser->parse_read_local_extended_features_response( |
| response, &page_number, &last_features_classic_page_index, |
| features_classic, MAX_FEATURES_CLASSIC_PAGE_COUNT); |
| |
| CHECK(page_number == 0); |
| page_number++; |
| |
| // Inform the controller what page 0 features we support, based on what |
| // it told us it supports. We need to do this first before we request the |
| // next page, because the controller's response for page 1 may be |
| // dependent on what we configure from page 0 |
| simple_pairing_supported = |
| HCI_SIMPLE_PAIRING_SUPPORTED(features_classic[0].as_array); |
| if (simple_pairing_supported) { |
| response = AWAIT_COMMAND( |
| packet_factory->make_write_simple_pairing_mode(HCI_SP_MODE_ENABLED)); |
| packet_parser->parse_generic_command_complete(response); |
| } |
| |
| if (HCI_LE_SPT_SUPPORTED(features_classic[0].as_array)) { |
| uint8_t simultaneous_le_host = |
| HCI_SIMUL_LE_BREDR_SUPPORTED(features_classic[0].as_array) |
| ? BTM_BLE_SIMULTANEOUS_HOST |
| : 0; |
| response = AWAIT_COMMAND(packet_factory->make_ble_write_host_support( |
| BTM_BLE_HOST_SUPPORT, simultaneous_le_host)); |
| |
| packet_parser->parse_generic_command_complete(response); |
| |
| // If we modified the BT_HOST_SUPPORT, we will need ext. feat. page 1 |
| if (last_features_classic_page_index < 1) |
| last_features_classic_page_index = 1; |
| } |
| |
| // Done telling the controller about what page 0 features we support |
| // Request the remaining feature pages |
| while (page_number <= last_features_classic_page_index && |
| page_number < MAX_FEATURES_CLASSIC_PAGE_COUNT) { |
| response = AWAIT_COMMAND( |
| packet_factory->make_read_local_extended_features(page_number)); |
| packet_parser->parse_read_local_extended_features_response( |
| response, &page_number, &last_features_classic_page_index, |
| features_classic, MAX_FEATURES_CLASSIC_PAGE_COUNT); |
| |
| page_number++; |
| } |
| |
| #if (SC_MODE_INCLUDED == TRUE) |
| secure_connections_supported = |
| HCI_SC_CTRLR_SUPPORTED(features_classic[2].as_array); |
| if (secure_connections_supported) { |
| response = AWAIT_COMMAND( |
| packet_factory->make_write_secure_connections_host_support( |
| HCI_SC_MODE_ENABLED)); |
| packet_parser->parse_generic_command_complete(response); |
| } |
| #endif |
| |
| ble_supported = last_features_classic_page_index >= 1 && |
| HCI_LE_HOST_SUPPORTED(features_classic[1].as_array); |
| if (ble_supported) { |
| // Request the ble white list size next |
| response = AWAIT_COMMAND(packet_factory->make_ble_read_white_list_size()); |
| packet_parser->parse_ble_read_white_list_size_response( |
| response, &ble_white_list_size); |
| |
| // Request the ble buffer size next |
| response = AWAIT_COMMAND(packet_factory->make_ble_read_buffer_size()); |
| packet_parser->parse_ble_read_buffer_size_response( |
| response, &acl_data_size_ble, &acl_buffer_count_ble); |
| |
| // Response of 0 indicates ble has the same buffer size as classic |
| if (acl_data_size_ble == 0) acl_data_size_ble = acl_data_size_classic; |
| |
| // Request the ble supported states next |
| response = AWAIT_COMMAND(packet_factory->make_ble_read_supported_states()); |
| packet_parser->parse_ble_read_supported_states_response( |
| response, ble_supported_states, sizeof(ble_supported_states)); |
| |
| // Request the ble supported features next |
| response = |
| AWAIT_COMMAND(packet_factory->make_ble_read_local_supported_features()); |
| packet_parser->parse_ble_read_local_supported_features_response( |
| response, &features_ble); |
| |
| if (HCI_LE_ENHANCED_PRIVACY_SUPPORTED(features_ble.as_array)) { |
| response = |
| AWAIT_COMMAND(packet_factory->make_ble_read_resolving_list_size()); |
| packet_parser->parse_ble_read_resolving_list_size_response( |
| response, &ble_resolving_list_max_size); |
| } |
| |
| if (HCI_LE_DATA_LEN_EXT_SUPPORTED(features_ble.as_array)) { |
| response = AWAIT_COMMAND( |
| packet_factory->make_ble_read_suggested_default_data_length()); |
| packet_parser->parse_ble_read_suggested_default_data_length_response( |
| response, &ble_suggested_default_data_length); |
| } |
| |
| if (HCI_LE_EXTENDED_ADVERTISING_SUPPORTED(features_ble.as_array)) { |
| response = AWAIT_COMMAND( |
| packet_factory->make_ble_read_maximum_advertising_data_length()); |
| packet_parser->parse_ble_read_maximum_advertising_data_length( |
| response, &ble_maxium_advertising_data_length); |
| |
| response = AWAIT_COMMAND( |
| packet_factory->make_ble_read_number_of_supported_advertising_sets()); |
| packet_parser->parse_ble_read_number_of_supported_advertising_sets( |
| response, &ble_number_of_supported_advertising_sets); |
| } else { |
| /* If LE Excended Advertising is not supported, use the default value */ |
| ble_maxium_advertising_data_length = 31; |
| } |
| |
| // Set the ble event mask next |
| response = |
| AWAIT_COMMAND(packet_factory->make_ble_set_event_mask(&BLE_EVENT_MASK)); |
| packet_parser->parse_generic_command_complete(response); |
| } |
| |
| if (simple_pairing_supported) { |
| response = |
| AWAIT_COMMAND(packet_factory->make_set_event_mask(&CLASSIC_EVENT_MASK)); |
| packet_parser->parse_generic_command_complete(response); |
| } |
| |
| // read local supported codecs |
| if (HCI_READ_LOCAL_CODECS_SUPPORTED(supported_commands)) { |
| response = |
| AWAIT_COMMAND(packet_factory->make_read_local_supported_codecs()); |
| packet_parser->parse_read_local_supported_codecs_response( |
| response, &number_of_local_supported_codecs, local_supported_codecs); |
| } |
| |
| readable = true; |
| return future_new_immediate(FUTURE_SUCCESS); |
| } |
| |
| static future_t* shut_down(void) { |
| readable = false; |
| return future_new_immediate(FUTURE_SUCCESS); |
| } |
| |
| EXPORT_SYMBOL extern const module_t controller_module = { |
| .name = CONTROLLER_MODULE, |
| .init = NULL, |
| .start_up = start_up, |
| .shut_down = shut_down, |
| .clean_up = NULL, |
| .dependencies = {HCI_MODULE, NULL}}; |
| |
| // Interface functions |
| |
| static bool get_is_ready(void) { return readable; } |
| |
| static const bt_bdaddr_t* get_address(void) { |
| CHECK(readable); |
| return &address; |
| } |
| |
| static const bt_version_t* get_bt_version(void) { |
| CHECK(readable); |
| return &bt_version; |
| } |
| |
| // TODO(zachoverflow): hide inside, move decoder inside too |
| static const bt_device_features_t* get_features_classic(int index) { |
| CHECK(readable); |
| CHECK(index < MAX_FEATURES_CLASSIC_PAGE_COUNT); |
| return &features_classic[index]; |
| } |
| |
| static uint8_t get_last_features_classic_index(void) { |
| CHECK(readable); |
| return last_features_classic_page_index; |
| } |
| |
| static uint8_t* get_local_supported_codecs(uint8_t* number_of_codecs) { |
| CHECK(readable); |
| if (number_of_local_supported_codecs) { |
| *number_of_codecs = number_of_local_supported_codecs; |
| return local_supported_codecs; |
| } |
| return NULL; |
| } |
| |
| static const bt_device_features_t* get_features_ble(void) { |
| CHECK(readable); |
| CHECK(ble_supported); |
| return &features_ble; |
| } |
| |
| static const uint8_t* get_ble_supported_states(void) { |
| CHECK(readable); |
| CHECK(ble_supported); |
| return ble_supported_states; |
| } |
| |
| static bool supports_simple_pairing(void) { |
| CHECK(readable); |
| return simple_pairing_supported; |
| } |
| |
| static bool supports_secure_connections(void) { |
| CHECK(readable); |
| return secure_connections_supported; |
| } |
| |
| static bool supports_simultaneous_le_bredr(void) { |
| CHECK(readable); |
| return HCI_SIMUL_LE_BREDR_SUPPORTED(features_classic[0].as_array); |
| } |
| |
| static bool supports_reading_remote_extended_features(void) { |
| CHECK(readable); |
| return HCI_READ_REMOTE_EXT_FEATURES_SUPPORTED(supported_commands); |
| } |
| |
| static bool supports_interlaced_inquiry_scan(void) { |
| CHECK(readable); |
| return HCI_LMP_INTERLACED_INQ_SCAN_SUPPORTED(features_classic[0].as_array); |
| } |
| |
| static bool supports_rssi_with_inquiry_results(void) { |
| CHECK(readable); |
| return HCI_LMP_INQ_RSSI_SUPPORTED(features_classic[0].as_array); |
| } |
| |
| static bool supports_extended_inquiry_response(void) { |
| CHECK(readable); |
| return HCI_EXT_INQ_RSP_SUPPORTED(features_classic[0].as_array); |
| } |
| |
| static bool supports_master_slave_role_switch(void) { |
| CHECK(readable); |
| return HCI_SWITCH_SUPPORTED(features_classic[0].as_array); |
| } |
| |
| static bool supports_ble(void) { |
| CHECK(readable); |
| return ble_supported; |
| } |
| |
| static bool supports_ble_privacy(void) { |
| CHECK(readable); |
| CHECK(ble_supported); |
| return HCI_LE_ENHANCED_PRIVACY_SUPPORTED(features_ble.as_array); |
| } |
| |
| static bool supports_ble_packet_extension(void) { |
| CHECK(readable); |
| CHECK(ble_supported); |
| return HCI_LE_DATA_LEN_EXT_SUPPORTED(features_ble.as_array); |
| } |
| |
| static bool supports_ble_connection_parameters_request(void) { |
| CHECK(readable); |
| CHECK(ble_supported); |
| return HCI_LE_CONN_PARAM_REQ_SUPPORTED(features_ble.as_array); |
| } |
| |
| static bool supports_ble_2m_phy(void) { |
| CHECK(readable); |
| CHECK(ble_supported); |
| return HCI_LE_2M_PHY_SUPPORTED(features_ble.as_array); |
| } |
| |
| static bool supports_ble_coded_phy(void) { |
| CHECK(readable); |
| CHECK(ble_supported); |
| return HCI_LE_CODED_PHY_SUPPORTED(features_ble.as_array); |
| } |
| |
| static bool supports_ble_extended_advertising(void) { |
| CHECK(readable); |
| CHECK(ble_supported); |
| return HCI_LE_EXTENDED_ADVERTISING_SUPPORTED(features_ble.as_array); |
| } |
| |
| static bool supports_ble_periodic_advertising(void) { |
| CHECK(readable); |
| CHECK(ble_supported); |
| return HCI_LE_PERIODIC_ADVERTISING_SUPPORTED(features_ble.as_array); |
| } |
| |
| static uint16_t get_acl_data_size_classic(void) { |
| CHECK(readable); |
| return acl_data_size_classic; |
| } |
| |
| static uint16_t get_acl_data_size_ble(void) { |
| CHECK(readable); |
| CHECK(ble_supported); |
| return acl_data_size_ble; |
| } |
| |
| static uint16_t get_acl_packet_size_classic(void) { |
| CHECK(readable); |
| return acl_data_size_classic + HCI_DATA_PREAMBLE_SIZE; |
| } |
| |
| static uint16_t get_acl_packet_size_ble(void) { |
| CHECK(readable); |
| return acl_data_size_ble + HCI_DATA_PREAMBLE_SIZE; |
| } |
| |
| static uint16_t get_ble_suggested_default_data_length(void) { |
| CHECK(readable); |
| CHECK(ble_supported); |
| return ble_suggested_default_data_length; |
| } |
| |
| static uint16_t get_ble_maxium_advertising_data_length(void) { |
| CHECK(readable); |
| CHECK(ble_supported); |
| return ble_maxium_advertising_data_length; |
| } |
| |
| static uint8_t get_ble_number_of_supported_advertising_sets(void) { |
| CHECK(readable); |
| CHECK(ble_supported); |
| return ble_number_of_supported_advertising_sets; |
| } |
| |
| static uint16_t get_acl_buffer_count_classic(void) { |
| CHECK(readable); |
| return acl_buffer_count_classic; |
| } |
| |
| static uint8_t get_acl_buffer_count_ble(void) { |
| CHECK(readable); |
| CHECK(ble_supported); |
| return acl_buffer_count_ble; |
| } |
| |
| static uint8_t get_ble_white_list_size(void) { |
| CHECK(readable); |
| CHECK(ble_supported); |
| return ble_white_list_size; |
| } |
| |
| static uint8_t get_ble_resolving_list_max_size(void) { |
| CHECK(readable); |
| CHECK(ble_supported); |
| return ble_resolving_list_max_size; |
| } |
| |
| static void set_ble_resolving_list_max_size(int resolving_list_max_size) { |
| // Setting "resolving_list_max_size" to 0 is done during cleanup, |
| // hence we ignore the "readable" flag already set to false during shutdown. |
| if (resolving_list_max_size != 0) { |
| CHECK(readable); |
| } |
| CHECK(ble_supported); |
| ble_resolving_list_max_size = resolving_list_max_size; |
| } |
| |
| static const controller_t interface = { |
| get_is_ready, |
| |
| get_address, |
| get_bt_version, |
| |
| get_features_classic, |
| get_last_features_classic_index, |
| |
| get_features_ble, |
| get_ble_supported_states, |
| |
| supports_simple_pairing, |
| supports_secure_connections, |
| supports_simultaneous_le_bredr, |
| supports_reading_remote_extended_features, |
| supports_interlaced_inquiry_scan, |
| supports_rssi_with_inquiry_results, |
| supports_extended_inquiry_response, |
| supports_master_slave_role_switch, |
| |
| supports_ble, |
| supports_ble_packet_extension, |
| supports_ble_connection_parameters_request, |
| supports_ble_privacy, |
| supports_ble_2m_phy, |
| supports_ble_coded_phy, |
| supports_ble_extended_advertising, |
| supports_ble_periodic_advertising, |
| |
| get_acl_data_size_classic, |
| get_acl_data_size_ble, |
| |
| get_acl_packet_size_classic, |
| get_acl_packet_size_ble, |
| get_ble_suggested_default_data_length, |
| get_ble_maxium_advertising_data_length, |
| get_ble_number_of_supported_advertising_sets, |
| |
| get_acl_buffer_count_classic, |
| get_acl_buffer_count_ble, |
| |
| get_ble_white_list_size, |
| |
| get_ble_resolving_list_max_size, |
| set_ble_resolving_list_max_size, |
| get_local_supported_codecs}; |
| |
| const controller_t* controller_get_interface() { |
| static bool loaded = false; |
| if (!loaded) { |
| loaded = true; |
| |
| hci = hci_layer_get_interface(); |
| packet_factory = hci_packet_factory_get_interface(); |
| packet_parser = hci_packet_parser_get_interface(); |
| } |
| |
| return &interface; |
| } |
| |
| const controller_t* controller_get_test_interface( |
| const hci_t* hci_interface, |
| const hci_packet_factory_t* packet_factory_interface, |
| const hci_packet_parser_t* packet_parser_interface) { |
| hci = hci_interface; |
| packet_factory = packet_factory_interface; |
| packet_parser = packet_parser_interface; |
| return &interface; |
| } |