/*******************************************************************************
**
** Function userial_open
**
** Description Open Bluetooth device with the port ID
**
** Returns TRUE/FALSE
**
*******************************************************************************/
uint8_t userial_open(uint8_t port)
{
struct sched_param param;
int policy, result;
pthread_attr_t thread_attr;
int fd_array[CH_MAX];
USERIALDBG("userial_open(port:%d)", port);
if (userial_running)
{
/* Userial is open; close it first */
userial_close();
utils_delay(50);
}
if (port >= MAX_SERIAL_PORT)
{
ALOGE("Port > MAX_SERIAL_PORT");
return FALSE;
}
/* Calling vendor-specific part */
if (bt_vnd_if)
{
result = bt_vnd_if->op(BT_VND_OP_USERIAL_OPEN, &fd_array);
if (result != 1)
{
ALOGE("userial_open: wrong numbers of open fd in vendor lib [%d]!",
result);
ALOGE("userial_open: HCI UART expects only one open fd");
bt_vnd_if->op(BT_VND_OP_USERIAL_CLOSE, NULL);
return FALSE;
}
userial_cb.fd = fd_array[0];
}
else
{
ALOGE("userial_open: missing vendor lib interface !!!");
ALOGE("userial_open: unable to open UART port");
return FALSE;
}
if (userial_cb.fd == -1)
{
ALOGE("userial_open: failed to open UART port");
return FALSE;
}
USERIALDBG( "fd = %d", userial_cb.fd);
userial_cb.port = port;
pthread_attr_init(&thread_attr);
if (pthread_create(&(userial_cb.read_thread), &thread_attr, \
userial_read_thread, NULL) != 0 )
{
ALOGE("pthread_create failed!");
return FALSE;
}
if(pthread_getschedparam(userial_cb.read_thread, &policy, ¶m)==0)
{
policy = BTHC_LINUX_BASE_POLICY;
#if (BTHC_LINUX_BASE_POLICY!=SCHED_NORMAL)
param.sched_priority = BTHC_USERIAL_READ_THREAD_PRIORITY;
#endif
result = pthread_setschedparam(userial_cb.read_thread, policy, ¶m);
if (result != 0)
{
ALOGW("userial_open: pthread_setschedparam failed (%s)", \
strerror(result));
}
}
return TRUE;
}
/*******************************************************************************
**
** Function userial_open
**
** Description Open Bluetooth device with the port ID
**
** Returns TRUE/FALSE
**
*******************************************************************************/
uint8_t userial_open(uint8_t port)
{
struct sched_param param;
int policy, result;
pthread_attr_t thread_attr;
USERIALDBG("userial_open(port:%d)", port);
if (userial_running)
{
/* Userial is open; close it first */
userial_close();
utils_delay(50);
}
if (port >= MAX_SERIAL_PORT)
{
ALOGE("Port > MAX_SERIAL_PORT");
return FALSE;
}
/* Calling vendor-specific part */
if (bt_vnd_if)
{
result = bt_vnd_if->op(BT_VND_OP_USERIAL_OPEN, &userial_cb.fd);
if ((result != 2) && (result != 4))
{
ALOGE("userial_open: wrong numbers of open fd in vendor lib [%d]!",
result);
ALOGE("userial_open: HCI MCT expects 2 or 4 open file descriptors");
bt_vnd_if->op(BT_VND_OP_USERIAL_CLOSE, NULL);
return FALSE;
}
}
else
{
ALOGE("userial_open: missing vendor lib interface !!!");
ALOGE("userial_open: unable to open BT transport");
return FALSE;
}
ALOGI("CMD=%d, EVT=%d, ACL_Out=%d, ACL_In=%d", \
userial_cb.fd[CH_CMD], userial_cb.fd[CH_EVT], \
userial_cb.fd[CH_ACL_OUT], userial_cb.fd[CH_ACL_IN]);
if ((userial_cb.fd[CH_CMD] == -1) || (userial_cb.fd[CH_EVT] == -1) ||
(userial_cb.fd[CH_ACL_OUT] == -1) || (userial_cb.fd[CH_ACL_IN] == -1))
{
ALOGE("userial_open: failed to open BT transport");
bt_vnd_if->op(BT_VND_OP_USERIAL_CLOSE, NULL);
return FALSE;
}
userial_cb.port = port;
/* Start listening thread */
pthread_attr_init(&thread_attr);
if (pthread_create(&(userial_cb.read_thread), &thread_attr, \
userial_read_thread, NULL) != 0 )
{
ALOGE("pthread_create failed!");
bt_vnd_if->op(BT_VND_OP_USERIAL_CLOSE, NULL);
return FALSE;
}
if(pthread_getschedparam(userial_cb.read_thread, &policy, ¶m)==0)
{
policy = BTHC_LINUX_BASE_POLICY;
#if (BTHC_LINUX_BASE_POLICY != SCHED_NORMAL)
param.sched_priority = BTHC_USERIAL_READ_THREAD_PRIORITY;
#else
param.sched_priority = 0;
#endif
result = pthread_setschedparam(userial_cb.read_thread, policy, ¶m);
if (result != 0)
{
ALOGW("userial_open: pthread_setschedparam failed (%s)", \
strerror(result));
}
}
return TRUE;
}
/*******************************************************************************
**
** Function userial_read_thread
**
** Description
**
** Returns void *
**
*******************************************************************************/
static void *userial_read_thread(void *arg)
{
int rx_length = 0;
HC_BT_HDR *p_buf = NULL;
uint8_t *p;
USERIALDBG("Entering userial_read_thread()");
prctl(PR_SET_NAME, (unsigned long)"userial_read", 0, 0, 0);
rx_flow_on = TRUE;
userial_running = 1;
raise_priority_a2dp(TASK_HIGH_USERIAL_READ);
while (userial_running)
{
if (bt_hc_cbacks)
{
p_buf = (HC_BT_HDR *) bt_hc_cbacks->alloc( \
BTHC_USERIAL_READ_MEM_SIZE);
}
else
p_buf = NULL;
if (p_buf != NULL)
{
p_buf->offset = 0;
p_buf->layer_specific = 0;
p = (uint8_t *) (p_buf + 1);
rx_length = select_read(userial_cb.fd, p, READ_LIMIT);
}
else
{
rx_length = 0;
utils_delay(100);
ALOGW("userial_read_thread() failed to gain buffers");
continue;
}
if (rx_length > 0)
{
p_buf->len = (uint16_t)rx_length;
utils_enqueue(&(userial_cb.rx_q), p_buf);
bthc_signal_event(HC_EVENT_RX);
}
else /* either 0 or < 0 */
{
ALOGW("select_read return size <=0:%d, exiting userial_read_thread",\
rx_length);
/* if we get here, we should have a buffer */
bt_hc_cbacks->dealloc((TRANSAC) p_buf, (char *) (p_buf + 1));
/* negative value means exit thread */
break;
}
} /* for */
userial_running = 0;
USERIALDBG("Leaving userial_read_thread()");
pthread_exit(NULL);
return NULL; // Compiler friendly
}
