/**
* Startup function for user specified task,
* calls task function with proper signature
*
* @param data the previously allocated lpel_task_t TCB
*/
void TaskStartup( void *data)
{
lpel_task_t *t = (lpel_task_t *)data;
#if 0
unsigned long z;
z = x<<16;
z <<= 16;
z |= y;
t = (lpel_task_t *)z;
#endif
TaskStart( t);
/* call the task function with inarg as parameter */
t->outarg = t->func(t->inarg);
/* if task function returns, exit properly */
t->state = TASK_ZOMBIE;
LpelWorkerSelfTaskExit(t);
TaskStop( t);
LpelWorkerDispatcher( t);
/* execution never comes back here */
assert(0);
}
/**
* Block a task by reading from/writing to a stream
*/
void LpelTaskBlockStream(lpel_task_t *t)
{
/* a reference to it is held in the stream */
t->state = TASK_BLOCKED;
LpelWorkerTaskBlock(t);
TaskStop( t);
LpelWorkerDispatcher( t);
TaskStart( t);
}
/**
* Yield execution back to scheduler voluntarily
*
* @pre This call must be made from within a LPEL task!
*/
void LpelTaskYield(void)
{
lpel_task_t *ct = LpelTaskSelf();
assert( ct->state == TASK_RUNNING );
ct->state = TASK_READY;
LpelWorkerSelfTaskYield(ct);
TaskStop( ct);
LpelWorkerDispatcher( ct);
TaskStart( ct);
}
/**
* Exit the current task
*
* @param outarg output argument of the task
* @pre This call must be made within a LPEL task!
*/
void LpelTaskExit(void *outarg)
{
lpel_task_t *ct = LpelTaskSelf();
assert( ct->state == TASK_RUNNING );
ct->outarg = outarg;
/* context switch happens, this task is cleaned up then */
ct->state = TASK_ZOMBIE;
LpelWorkerSelfTaskExit(ct);
TaskStop( ct);
LpelWorkerDispatcher( ct);
/* execution never comes back here */
assert(0);
}
static void mpc5200_fec_stop_dma(void)
{
TaskStop(FEC_RECV_TASK_NO);
TaskStop(FEC_XMIT_TASK_NO);
}
