| /****************************************************************************** |
| * |
| * 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 <assert.h> |
| #include <stdbool.h> |
| |
| #include "bdaddr.h" |
| #include "bt_types.h" |
| #include "device/include/controller.h" |
| #include "event_mask.h" |
| #include "future.h" |
| #include "hcimsgs.h" |
| #include "hci/include/hci_layer.h" |
| #include "hci/include/hci_packet_factory.h" |
| #include "hci/include/hci_packet_parser.h" |
| #include "module.h" |
| #include "stack/include/btm_ble_api.h" |
| #include "version.h" |
| |
| const bt_event_mask_t BLE_EVENT_MASK = { "\x00\x00\x00\x00\x00\x00\x00\x3f" }; |
| #if (BLE_INCLUDED) |
| const bt_event_mask_t CLASSIC_EVENT_MASK = { HCI_DUMO_EVENT_MASK_EXT }; |
| #else |
| const bt_event_mask_t CLASSIC_EVENT_MASK = { HCI_LISBON_EVENT_MASK_EXT }; |
| #endif |
| |
| // 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 |
| |
| 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_supported_states[BLE_SUPPORTED_STATES_SIZE]; |
| static bt_device_features_t features_ble; |
| |
| static bool readable; |
| static bool ble_supported; |
| static bool simple_pairing_supported; |
| |
| #define AWAIT_COMMAND(command) 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 |
| ); |
| |
| assert(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 (BLE_INCLUDED == TRUE) |
| 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); |
| } |
| #endif |
| |
| // 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 (BLE_INCLUDED == TRUE) |
| 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 |
| ); |
| |
| // 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); |
| } |
| #endif |
| |
| if (simple_pairing_supported) { |
| response = AWAIT_COMMAND(packet_factory->make_set_event_mask(&CLASSIC_EVENT_MASK)); |
| packet_parser->parse_generic_command_complete(response); |
| } |
| |
| readable = true; |
| return future_new_immediate(FUTURE_SUCCESS); |
| } |
| |
| static future_t *shut_down(void) { |
| readable = false; |
| return future_new_immediate(FUTURE_SUCCESS); |
| } |
| |
| 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) { |
| assert(readable); |
| return &address; |
| } |
| |
| static const bt_version_t *get_bt_version(void) { |
| assert(readable); |
| return &bt_version; |
| } |
| |
| // TODO(zachoverflow): hide inside, move decoder inside too |
| static const bt_device_features_t *get_features_classic(int index) { |
| assert(readable); |
| assert(index < MAX_FEATURES_CLASSIC_PAGE_COUNT); |
| return &features_classic[index]; |
| } |
| |
| static uint8_t get_last_features_classic_index(void) { |
| assert(readable); |
| return last_features_classic_page_index; |
| } |
| |
| static const bt_device_features_t *get_features_ble(void) { |
| assert(readable); |
| assert(ble_supported); |
| return &features_ble; |
| } |
| |
| static const uint8_t *get_ble_supported_states(void) { |
| assert(readable); |
| assert(ble_supported); |
| return ble_supported_states; |
| } |
| |
| static bool supports_simple_pairing(void) { |
| assert(readable); |
| return simple_pairing_supported; |
| } |
| |
| static bool supports_simultaneous_le_bredr(void) { |
| assert(readable); |
| return HCI_SIMUL_LE_BREDR_SUPPORTED(features_classic[0].as_array); |
| } |
| |
| static bool supports_reading_remote_extended_features(void) { |
| assert(readable); |
| return HCI_READ_REMOTE_EXT_FEATURES_SUPPORTED(supported_commands); |
| } |
| |
| static bool supports_interlaced_inquiry_scan(void) { |
| assert(readable); |
| return HCI_LMP_INTERLACED_INQ_SCAN_SUPPORTED(features_classic[0].as_array); |
| } |
| |
| static bool supports_rssi_with_inquiry_results(void) { |
| assert(readable); |
| return HCI_LMP_INQ_RSSI_SUPPORTED(features_classic[0].as_array); |
| } |
| |
| static bool supports_extended_inquiry_response(void) { |
| assert(readable); |
| return HCI_EXT_INQ_RSP_SUPPORTED(features_classic[0].as_array); |
| } |
| |
| static bool supports_master_slave_role_switch(void) { |
| assert(readable); |
| return HCI_SWITCH_SUPPORTED(features_classic[0].as_array); |
| } |
| |
| static bool supports_ble(void) { |
| assert(readable); |
| return ble_supported; |
| } |
| |
| static bool supports_ble_connection_parameters_request(void) { |
| assert(readable); |
| assert(ble_supported); |
| return HCI_LE_CONN_PARAM_REQ_SUPPORTED(features_ble.as_array); |
| } |
| |
| static uint16_t get_acl_data_size_classic(void) { |
| assert(readable); |
| return acl_data_size_classic; |
| } |
| |
| static uint16_t get_acl_data_size_ble(void) { |
| assert(readable); |
| assert(ble_supported); |
| return acl_data_size_ble; |
| } |
| |
| static uint16_t get_acl_packet_size_classic(void) { |
| assert(readable); |
| return acl_data_size_classic + HCI_DATA_PREAMBLE_SIZE; |
| } |
| |
| static uint16_t get_acl_packet_size_ble(void) { |
| assert(readable); |
| return acl_data_size_ble + HCI_DATA_PREAMBLE_SIZE; |
| } |
| |
| static uint16_t get_acl_buffer_count_classic(void) { |
| assert(readable); |
| return acl_buffer_count_classic; |
| } |
| |
| static uint8_t get_acl_buffer_count_ble(void) { |
| assert(readable); |
| assert(ble_supported); |
| return acl_buffer_count_ble; |
| } |
| |
| 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_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_connection_parameters_request, |
| |
| get_acl_data_size_classic, |
| get_acl_data_size_ble, |
| |
| get_acl_packet_size_classic, |
| get_acl_packet_size_ble, |
| |
| get_acl_buffer_count_classic, |
| get_acl_buffer_count_ble |
| }; |
| |
| 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; |
| } |