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/*
* Xen irq routines
*
* Copyright (C) 2005 Hewlett-Packard Co.
* Dan Magenheimer (dan.magenheimer@hp.com)
*
*/
#include <asm/ptrace.h>
#include <asm/hw_irq.h>
void
xen_debug_irq(ia64_vector vector, struct pt_regs *regs)
{
//FIXME: For debug only, can be removed
static char firstirq = 1;
static char firsttime[256];
static char firstpend[256];
if (firstirq) {
int i;
for (i=0;i<256;i++) firsttime[i] = 1;
for (i=0;i<256;i++) firstpend[i] = 1;
firstirq = 0;
}
if (firsttime[vector]) {
printf("**** (entry) First received int on vector=%d,itc=%lx\n",
(unsigned long) vector, ia64_get_itc());
firsttime[vector] = 0;
}
}
int
xen_do_IRQ(ia64_vector vector)
{
if (vector != 0xef) {
extern void vcpu_pend_interrupt(void *, int);
#if 0
if (firsttime[vector]) {
printf("**** (iterate) First received int on vector=%d,itc=%lx\n",
(unsigned long) vector, ia64_get_itc());
firsttime[vector] = 0;
}
if (firstpend[vector]) {
printf("**** First pended int on vector=%d,itc=%lx\n",
(unsigned long) vector,ia64_get_itc());
firstpend[vector] = 0;
}
#endif
//FIXME: TEMPORARY HACK!!!!
vcpu_pend_interrupt(dom0->exec_domain[0],vector);
domain_wake(dom0->exec_domain[0]);
return(1);
}
return(0);
}
/* From linux/kernel/softirq.c */
#ifdef __ARCH_IRQ_EXIT_IRQS_DISABLED
# define invoke_softirq() __do_softirq()
#else
# define invoke_softirq() do_softirq()
#endif
/*
* Exit an interrupt context. Process softirqs if needed and possible:
*/
void irq_exit(void)
{
//account_system_vtime(current);
//sub_preempt_count(IRQ_EXIT_OFFSET);
if (!in_interrupt() && local_softirq_pending())
invoke_softirq();
//preempt_enable_no_resched();
}
/* end from linux/kernel/softirq.c */
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