static void child_work(int numth, Prolib_t *lib)
{
while (1)
{
set_process_status(numth, lib, IDLE);
p(lib[numth].semid, lib[numth].semid_index);
set_process_status(numth, lib, RUNNING);
lib[numth].func((void *)&lib[numth].sokFd);
increase_job_times(lib + numth);
}
}
/**
* @brief ioctl communicaton function
* communicaton with application
* @param data passed from application memory space
*
* @return communicaton status
*/
static long driver_ioctl(struct file *f, unsigned int cmd, unsigned long arg)
{
int ret = 0;
uint32_t mess;
switch (cmd){
case SET_IMAGE_STATUS:
if (copy_from_user(&mess, (void __user *)arg, sizeof(unsigned int)))
return COMMUNICATION_ERROR;
/* Send message to nios */
ret = mbox_send_message(chan_sender, (void *)&mess);
pr_info("%s image is sent to nios, size: %d", __func__, mess);
if (ret < 0)
pr_info("Message 1 failure\n");
set_process_status(PROCESS_START);
if(__put_user(ret, (unsigned int __user *)arg))
return COMMUNICATION_ERROR;
break;
case GET_IMAGE_STATUS:
mess = get_process_status();
/*
* Return image status
* If process_status is 0,
* Nios did not finish to process the last request
*/
if(__put_user(mess, (unsigned int __user *)arg))
return COMMUNICATION_ERROR;
break;
default:
break;
}
return ret;
}
