Hi!
I'm trying to set up adeos ipipe on board EM2440 board based on
S3C2440 (it's similar to mini2440). Kernel version is 2.6.30.4 with
I-pipe 1.15-03. System is stable when one domain exists . Now I'm
trying to write kernel module that will catch interrupts from one of
the hardware timers of the S3C2440. Unfortunately I can't get it to
work. There is something wrong with ipipe_suspend_domain. When this
function is called in a endless loop the system hangs no matter if
priority of the module is grater or smaller than root domain. If this
function isn't called in loop than it doesn't affect system stability
if priority of module is less than kernel and hangs the system if
module's priority is greater.
Here are some parts of module:
static int __init adis_init(void)
{
struct ipipe_domain_attr attr;
printk("Timer irq jitter test start\n");
ipipe_init_attr (&attr);
attr.name = "TimeJitter";
attr.domid = 2;
attr.priority = IPIPE_ROOT_PRIO+1 ;
attr.entry = &domain_entry;
return ipipe_register_domain(&this_domain,&attr);
}
static void domain_entry(void)
{
printk("Domain started\n");
printk("%s %s\n", __DATE__, __TIME__);
prepare_timer();
ipipe_virtualize_irq(ipipe_current_domain, IRQ_TIMER3,
(ipipe_irq_handler_t) &adis_timer_interrupt,NULL,NULL,
IPIPE_HANDLE_MASK|IPIPE_PASS_MASK);
ipipe_control_irq(IRQ_TIMER3,0,IPIPE_ENABLE_MASK);
/* while(1)*/
{
ipipe_suspend_domain();
}
}
void adis_timer_interrupt(unsigned irq)
{
ipipe_control_irq(irq,0,IPIPE_ENABLE_MASK);
}
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