| /****************************************************************************** |
| * |
| * 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. |
| * |
| ******************************************************************************/ |
| |
| #include <assert.h> |
| |
| #include "osi/include/allocator.h" |
| #include "bt_types.h" |
| #include "buffer_allocator.h" |
| #include "hcidefs.h" |
| #include "hcimsgs.h" |
| #include "hci_internals.h" |
| #include "hci_layer.h" |
| #include "hci_packet_factory.h" |
| |
| static const allocator_t *buffer_allocator; |
| |
| static BT_HDR *make_packet(size_t data_size); |
| static BT_HDR *make_command_no_params(uint16_t opcode); |
| static BT_HDR *make_command(uint16_t opcode, size_t parameter_size, uint8_t **stream_out); |
| |
| // Interface functions |
| |
| static BT_HDR *make_reset(void) { |
| return make_command_no_params(HCI_RESET); |
| } |
| |
| static BT_HDR *make_read_buffer_size(void) { |
| return make_command_no_params(HCI_READ_BUFFER_SIZE); |
| } |
| |
| static BT_HDR *make_host_buffer_size(uint16_t acl_size, uint8_t sco_size, uint16_t acl_count, uint16_t sco_count) { |
| uint8_t *stream; |
| const uint8_t parameter_size = 2 + 1 + 2 + 2; // from each of the parameters |
| BT_HDR *packet = make_command(HCI_HOST_BUFFER_SIZE, parameter_size, &stream); |
| |
| UINT16_TO_STREAM(stream, acl_size); |
| UINT8_TO_STREAM(stream, sco_size); |
| UINT16_TO_STREAM(stream, acl_count); |
| UINT16_TO_STREAM(stream, sco_count); |
| return packet; |
| } |
| |
| static BT_HDR *make_read_local_version_info(void) { |
| return make_command_no_params(HCI_READ_LOCAL_VERSION_INFO); |
| } |
| |
| static BT_HDR *make_read_bd_addr(void) { |
| return make_command_no_params(HCI_READ_BD_ADDR); |
| } |
| |
| static BT_HDR *make_read_local_supported_commands(void) { |
| return make_command_no_params(HCI_READ_LOCAL_SUPPORTED_CMDS); |
| } |
| |
| static BT_HDR *make_read_local_extended_features(uint8_t page_number) { |
| uint8_t *stream; |
| const uint8_t parameter_size = 1; |
| BT_HDR *packet = make_command(HCI_READ_LOCAL_EXT_FEATURES, parameter_size, &stream); |
| |
| UINT8_TO_STREAM(stream, page_number); |
| return packet; |
| } |
| |
| static BT_HDR *make_write_simple_pairing_mode(uint8_t mode) { |
| uint8_t *stream; |
| const uint8_t parameter_size = 1; |
| BT_HDR *packet = make_command(HCI_WRITE_SIMPLE_PAIRING_MODE, parameter_size, &stream); |
| |
| UINT8_TO_STREAM(stream, mode); |
| return packet; |
| } |
| |
| static BT_HDR *make_write_secure_connections_host_support(uint8_t mode) { |
| uint8_t *stream; |
| const uint8_t parameter_size = 1; |
| BT_HDR *packet = make_command(HCI_WRITE_SECURE_CONNS_SUPPORT, parameter_size, &stream); |
| |
| UINT8_TO_STREAM(stream, mode); |
| return packet; |
| } |
| |
| static BT_HDR *make_set_event_mask(const bt_event_mask_t *event_mask) { |
| uint8_t *stream; |
| uint8_t parameter_size = sizeof(bt_event_mask_t); |
| BT_HDR *packet = make_command(HCI_SET_EVENT_MASK, parameter_size, &stream); |
| |
| ARRAY8_TO_STREAM(stream, event_mask->as_array); |
| return packet; |
| } |
| |
| static BT_HDR *make_ble_write_host_support(uint8_t supported_host, uint8_t simultaneous_host) { |
| uint8_t *stream; |
| const uint8_t parameter_size = 1 + 1; |
| BT_HDR *packet = make_command(HCI_WRITE_LE_HOST_SUPPORT, parameter_size, &stream); |
| |
| UINT8_TO_STREAM(stream, supported_host); |
| UINT8_TO_STREAM(stream, simultaneous_host); |
| return packet; |
| } |
| |
| static BT_HDR *make_ble_read_white_list_size(void) { |
| return make_command_no_params(HCI_BLE_READ_WHITE_LIST_SIZE); |
| } |
| |
| static BT_HDR *make_ble_read_buffer_size(void) { |
| return make_command_no_params(HCI_BLE_READ_BUFFER_SIZE); |
| } |
| |
| static BT_HDR *make_ble_read_supported_states(void) { |
| return make_command_no_params(HCI_BLE_READ_SUPPORTED_STATES); |
| } |
| |
| static BT_HDR *make_ble_read_local_supported_features(void) { |
| return make_command_no_params(HCI_BLE_READ_LOCAL_SPT_FEAT); |
| } |
| |
| static BT_HDR *make_ble_read_resolving_list_size(void) { |
| return make_command_no_params(HCI_BLE_READ_RESOLVING_LIST_SIZE); |
| } |
| |
| static BT_HDR *make_ble_read_suggested_default_data_length(void) { |
| return make_command_no_params(HCI_BLE_READ_DEFAULT_DATA_LENGTH); |
| } |
| |
| static BT_HDR *make_read_local_supported_codecs(void) { |
| return make_command_no_params(HCI_READ_LOCAL_SUPPORTED_CODECS); |
| } |
| |
| static BT_HDR *make_ble_set_event_mask(const bt_event_mask_t *event_mask) { |
| uint8_t *stream; |
| uint8_t parameter_size = sizeof(bt_event_mask_t); |
| BT_HDR *packet = make_command(HCI_BLE_SET_EVENT_MASK, parameter_size, &stream); |
| |
| ARRAY8_TO_STREAM(stream, event_mask->as_array); |
| return packet; |
| } |
| |
| // Internal functions |
| |
| static BT_HDR *make_command_no_params(uint16_t opcode) { |
| return make_command(opcode, 0, NULL); |
| } |
| |
| static BT_HDR *make_command(uint16_t opcode, size_t parameter_size, uint8_t **stream_out) { |
| BT_HDR *packet = make_packet(HCI_COMMAND_PREAMBLE_SIZE + parameter_size); |
| |
| uint8_t *stream = packet->data; |
| UINT16_TO_STREAM(stream, opcode); |
| UINT8_TO_STREAM(stream, parameter_size); |
| |
| if (stream_out != NULL) |
| *stream_out = stream; |
| |
| return packet; |
| } |
| |
| static BT_HDR *make_packet(size_t data_size) { |
| BT_HDR *ret = (BT_HDR *)buffer_allocator->alloc(sizeof(BT_HDR) + data_size); |
| assert(ret); |
| ret->event = 0; |
| ret->offset = 0; |
| ret->layer_specific = 0; |
| ret->len = data_size; |
| return ret; |
| } |
| |
| static const hci_packet_factory_t interface = { |
| make_reset, |
| make_read_buffer_size, |
| make_host_buffer_size, |
| make_read_local_version_info, |
| make_read_bd_addr, |
| make_read_local_supported_commands, |
| make_read_local_extended_features, |
| make_write_simple_pairing_mode, |
| make_write_secure_connections_host_support, |
| make_set_event_mask, |
| make_ble_write_host_support, |
| make_ble_read_white_list_size, |
| make_ble_read_buffer_size, |
| make_ble_read_supported_states, |
| make_ble_read_local_supported_features, |
| make_ble_read_resolving_list_size, |
| make_ble_read_suggested_default_data_length, |
| make_ble_set_event_mask, |
| make_read_local_supported_codecs |
| }; |
| |
| const hci_packet_factory_t *hci_packet_factory_get_interface() { |
| buffer_allocator = buffer_allocator_get_interface(); |
| return &interface; |
| } |