esp-idf/components/bt/bluedroid/device/controller.c

545 lines
16 KiB
C
Raw Normal View History

/******************************************************************************
*
* 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 <stdbool.h>
#include "common/bt_target.h"
#include "common/bt_trace.h"
#include "device/bdaddr.h"
#include "stack/bt_types.h"
#include "device/controller.h"
#include "device/event_mask.h"
#include "stack/hcimsgs.h"
#include "hci/hci_layer.h"
#include "hci/hci_packet_factory.h"
#include "hci/hci_packet_parser.h"
#include "stack/btm_ble_api.h"
#include "device/version.h"
#include "osi/future.h"
const bt_event_mask_t BLE_EVENT_MASK = { "\x00\x00\x00\x00\x00\x00\x06\x7f" };
#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 sco_data_size;
static uint16_t sco_buffer_count;
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_suggested_default_data_txtime;
static bool readable;
static bool ble_supported;
static bool simple_pairing_supported;
static bool secure_connections_supported;
#define AWAIT_COMMAND(command) future_await(hci->transmit_command_futured(command))
// Module lifecycle functions
static void 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,
&sco_data_size, &sco_buffer_count);
#if (C2H_FLOW_CONTROL_INCLUDED == TRUE)
// Enable controller to host flow control
response = AWAIT_COMMAND(packet_factory->make_set_c2h_flow_control(HCI_HOST_FLOW_CTRL_ACL_ON));
packet_parser->parse_generic_command_complete(response);
#endif ///C2H_FLOW_CONTROL_INCLUDED == TRUE
// 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 (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
#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
);
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)) {
/* set default tx data length to MAX 251 */
response = AWAIT_COMMAND(packet_factory->make_ble_write_suggested_default_data_length(BTM_BLE_DATA_SIZE_MAX, BTM_BLE_DATA_TX_TIME_MAX));
packet_parser->parse_generic_command_complete(response);
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,
&ble_suggested_default_data_txtime);
}
// 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
response = AWAIT_COMMAND(packet_factory->make_set_event_mask(&CLASSIC_EVENT_MASK));
packet_parser->parse_generic_command_complete(response);
#if (BTM_SCO_HCI_INCLUDED == TRUE)
response = AWAIT_COMMAND(packet_factory->make_write_sync_flow_control_enable(1));
packet_parser->parse_generic_command_complete(response);
response = AWAIT_COMMAND(packet_factory->make_write_default_erroneous_data_report(1));
packet_parser->parse_generic_command_complete(response);
#endif
readable = true;
// return future_new_immediate(FUTURE_SUCCESS);
return;
}
static void shut_down(void)
{
readable = false;
}
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_secure_connections(void)
{
assert(readable);
return secure_connections_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_privacy(void)
{
assert(readable);
assert(ble_supported);
return HCI_LE_ENHANCED_PRIVACY_SUPPORTED(features_ble.as_array);
}
static bool supports_ble_packet_extension(void)
{
assert(readable);
assert(ble_supported);
return HCI_LE_DATA_LEN_EXT_SUPPORTED(features_ble.as_array);
}
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_ble_suggested_default_data_length(void)
{
assert(readable);
assert(ble_supported);
return ble_suggested_default_data_length;
}
static uint16_t get_ble_suggested_default_data_txtime(void)
{
assert(readable);
assert(ble_supported);
return ble_suggested_default_data_txtime;
}
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 uint8_t get_ble_white_list_size(void)
{
assert(readable);
assert(ble_supported);
return ble_white_list_size;
}
static uint8_t get_ble_resolving_list_max_size(void)
{
assert(readable);
assert(ble_supported);
return ble_resolving_list_max_size;
}
static void set_ble_resolving_list_max_size(int resolving_list_max_size)
{
assert(readable);
assert(ble_supported);
ble_resolving_list_max_size = resolving_list_max_size;
}
#if (BTM_SCO_HCI_INCLUDED == TRUE)
static uint8_t get_sco_data_size(void)
{
assert(readable);
return sco_data_size;
}
static uint8_t get_sco_buffer_count(void)
{
assert(readable);
return sco_buffer_count;
}
#endif /* (BTM_SCO_HCI_INCLUDED == TRUE) */
static const controller_t interface = {
start_up,
shut_down,
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,
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_suggested_default_data_txtime,
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,
#if (BTM_SCO_HCI_INCLUDED == TRUE)
get_sco_data_size,
get_sco_buffer_count,
#endif /* (BTM_SCO_HCI_INCLUDED == TRUE) */
};
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;
}