void btu_task_start_up(UNUSED_ATTR void *context) {
BT_TRACE(TRACE_LAYER_BTU, TRACE_TYPE_API,
"btu_task pending for preload complete event");
LOG_INFO(LOG_TAG, "Bluetooth chip preload is complete");
BT_TRACE(TRACE_LAYER_BTU, TRACE_TYPE_API,
"btu_task received preload complete event");
/* Initialize the mandatory core stack control blocks
(BTU, BTM, L2CAP, and SDP)
*/
btu_init_core();
/* Initialize any optional stack components */
BTE_InitStack();
bta_sys_init();
/* Initialise platform trace levels at this point as BTE_InitStack() and bta_sys_init()
* reset the control blocks and preset the trace level with XXX_INITIAL_TRACE_LEVEL
*/
#if ( BT_USE_TRACES==TRUE )
module_init(get_module(BTE_LOGMSG_MODULE));
#endif
// Inform the bt jni thread initialization is ok.
btif_transfer_context(btif_init_ok, 0, NULL, 0, NULL);
fixed_queue_register_dequeue(btu_bta_msg_queue,
thread_get_reactor(bt_workqueue_thread),
btu_bta_msg_ready,
NULL);
fixed_queue_register_dequeue(btu_hci_msg_queue,
thread_get_reactor(bt_workqueue_thread),
btu_hci_msg_ready,
NULL);
fixed_queue_register_dequeue(btu_general_alarm_queue,
thread_get_reactor(bt_workqueue_thread),
btu_general_alarm_ready,
NULL);
fixed_queue_register_dequeue(btu_oneshot_alarm_queue,
thread_get_reactor(bt_workqueue_thread),
btu_oneshot_alarm_ready,
NULL);
fixed_queue_register_dequeue(btu_l2cap_alarm_queue,
thread_get_reactor(bt_workqueue_thread),
btu_l2cap_alarm_ready,
NULL);
}
static int hci_layer_init_env(void)
{
command_waiting_response_t *cmd_wait_q;
// The host is only allowed to send at most one command initially,
// as per the Bluetooth spec, Volume 2, Part E, 4.4 (Command Flow Control)
// This value can change when you get a command complete or command status event.
hci_host_env.command_credits = 1;
hci_host_env.command_queue = fixed_queue_new(SIZE_MAX);
if (hci_host_env.command_queue) {
fixed_queue_register_dequeue(hci_host_env.command_queue, event_command_ready);
} else {
LOG_ERROR("%s unable to create pending command queue.", __func__);
return -1;
}
hci_host_env.packet_queue = fixed_queue_new(SIZE_MAX);
if (hci_host_env.packet_queue) {
fixed_queue_register_dequeue(hci_host_env.packet_queue, event_packet_ready);
} else {
LOG_ERROR("%s unable to create pending packet queue.", __func__);
return -1;
}
// Init Commands waiting response list and timer
cmd_wait_q = &hci_host_env.cmd_waiting_q;
cmd_wait_q->timer_is_set = false;
cmd_wait_q->commands_pending_response = list_new(NULL);
if (!cmd_wait_q->commands_pending_response) {
LOG_ERROR("%s unable to create list for commands pending response.", __func__);
return -1;
}
pthread_mutex_init(&cmd_wait_q->commands_pending_response_lock, NULL);
cmd_wait_q->command_response_timer = osi_alarm_new("cmd_rsp_to", command_timed_out, cmd_wait_q, COMMAND_PENDING_TIMEOUT);
if (!cmd_wait_q->command_response_timer) {
LOG_ERROR("%s unable to create command response timer.", __func__);
return -1;
}
return 0;
}
static future_t *start_up(void) {
LOG_INFO(LOG_TAG, "%s", __func__);
// The host is only allowed to send at most one command initially,
// as per the Bluetooth spec, Volume 2, Part E, 4.4 (Command Flow Control)
// This value can change when you get a command complete or command status event.
command_credits = 1;
firmware_is_configured = false;
pthread_mutex_init(&commands_pending_response_lock, NULL);
// TODO(armansito): cutils/properties.h is only being used to pull-in runtime
// settings on Android. Remove this conditional include once we have a generic
// way to obtain system properties. For now, always use the default timeout on
// non-Android builds.
period_ms_t startup_timeout_ms = DEFAULT_STARTUP_TIMEOUT_MS;
#if !defined(OS_GENERIC)
// Grab the override startup timeout ms, if present.
char timeout_prop[PROPERTY_VALUE_MAX];
if (!property_get("bluetooth.enable_timeout_ms", timeout_prop, STRING_VALUE_OF(DEFAULT_STARTUP_TIMEOUT_MS))
|| (startup_timeout_ms = atoi(timeout_prop)) < 100)
startup_timeout_ms = DEFAULT_STARTUP_TIMEOUT_MS;
#endif // !defined(OS_GENERIC)
startup_timer = non_repeating_timer_new(startup_timeout_ms, startup_timer_expired, NULL);
if (!startup_timer) {
LOG_ERROR(LOG_TAG, "%s unable to create startup timer.", __func__);
goto error;
}
// Make sure we run in a bounded amount of time
non_repeating_timer_restart(startup_timer);
epilog_timer = non_repeating_timer_new(EPILOG_TIMEOUT_MS, epilog_timer_expired, NULL);
if (!epilog_timer) {
LOG_ERROR(LOG_TAG, "%s unable to create epilog timer.", __func__);
goto error;
}
command_response_timer = non_repeating_timer_new(COMMAND_PENDING_TIMEOUT, command_timed_out, NULL);
if (!command_response_timer) {
LOG_ERROR(LOG_TAG, "%s unable to create command response timer.", __func__);
goto error;
}
command_queue = fixed_queue_new(SIZE_MAX);
if (!command_queue) {
LOG_ERROR(LOG_TAG, "%s unable to create pending command queue.", __func__);
goto error;
}
packet_queue = fixed_queue_new(SIZE_MAX);
if (!packet_queue) {
LOG_ERROR(LOG_TAG, "%s unable to create pending packet queue.", __func__);
goto error;
}
thread = thread_new("hci_thread");
if (!thread) {
LOG_ERROR(LOG_TAG, "%s unable to create thread.", __func__);
goto error;
}
commands_pending_response = list_new(NULL);
if (!commands_pending_response) {
LOG_ERROR(LOG_TAG, "%s unable to create list for commands pending response.", __func__);
goto error;
}
memset(incoming_packets, 0, sizeof(incoming_packets));
packet_fragmenter->init(&packet_fragmenter_callbacks);
fixed_queue_register_dequeue(command_queue, thread_get_reactor(thread), event_command_ready, NULL);
fixed_queue_register_dequeue(packet_queue, thread_get_reactor(thread), event_packet_ready, NULL);
vendor->open(btif_local_bd_addr.address, &interface);
hal->init(&hal_callbacks, thread);
low_power_manager->init(thread);
vendor->set_callback(VENDOR_CONFIGURE_FIRMWARE, firmware_config_callback);
vendor->set_callback(VENDOR_CONFIGURE_SCO, sco_config_callback);
vendor->set_callback(VENDOR_DO_EPILOG, epilog_finished_callback);
if (!hci_inject->open(&interface)) {
// TODO(sharvil): gracefully propagate failures from this layer.
}
int power_state = BT_VND_PWR_OFF;
#if (defined (BT_CLEAN_TURN_ON_DISABLED) && BT_CLEAN_TURN_ON_DISABLED == TRUE)
LOG_WARN(LOG_TAG, "%s not turning off the chip before turning on.", __func__);
// So apparently this hack was needed in the past because a Wingray kernel driver
// didn't handle power off commands in a powered off state correctly.
// The comment in the old code said the workaround should be removed when the
// problem was fixed. Sadly, I have no idea if said bug was fixed or if said
// kernel is still in use, so we must leave this here for posterity. #sadpanda
#else
// cycle power on the chip to ensure it has been reset
vendor->send_command(VENDOR_CHIP_POWER_CONTROL, &power_state);
#endif
power_state = BT_VND_PWR_ON;
vendor->send_command(VENDOR_CHIP_POWER_CONTROL, &power_state);
startup_future = future_new();
LOG_DEBUG(LOG_TAG, "%s starting async portion", __func__);
thread_post(thread, event_finish_startup, NULL);
return startup_future;
error:;
shut_down(); // returns NULL so no need to wait for it
return future_new_immediate(FUTURE_FAIL);
}
