void run_irqs(void)
/* find the highest priority unmasked requested irq and run it */
{
int local_pic_ilevel, ret;
/* don't allow HW interrupts in force trace mode */
pic_activate();
if (!isset_IF()) {
if (pic_pending())
set_VIP();
return; /* exit if ints are disabled */
}
clear_VIP();
/* check for and find any requested irqs. Having found one, we atomic-ly
* clear it and verify it was there when we cleared it. If it wasn't, we
* look for the next request. There are two in_service bits for pic1 irqs.
* This is needed, because irq 8-15 must do 2 outb20s, which, if the dos
* irq code actually runs, will reset the bits. We also reset them here,
* since dos code won't necessarily run.
*/
while((local_pic_ilevel = pic_get_ilevel()) != -1) { /* while something to do*/
pic_print(1, "Running irq lvl ", local_pic_ilevel, "");
clear_bit(local_pic_ilevel, &pic_irr);
/* pic_isr bit is set in do_irq() */
ret = (pic_iinfo[local_pic_ilevel].func ?
pic_iinfo[local_pic_ilevel].func(local_pic_ilevel) : 1); /* run the function */
if (ret) {
do_irq(local_pic_ilevel);
}
}
}
void do_irq_mask(unsigned long mask, struct irq_region *region, struct pt_regs *regs)
{
unsigned long bit;
int irq;
int cpu = smp_processor_id();
#ifdef DEBUG_IRQ
if (mask != (1L << MAX_CPU_IRQ))
printk("do_irq_mask %08lx %p %p\n", mask, region, regs);
#endif
for(bit=(1L<<MAX_CPU_IRQ), irq = 0; mask && bit; bit>>=1, irq++) {
int irq_num;
if(!(bit&mask))
continue;
irq_num = region->data.irqbase + irq;
++kstat.irqs[cpu][IRQ_FROM_REGION(CPU_IRQ_REGION) | irq];
if (IRQ_REGION(irq_num) != CPU_IRQ_REGION)
++kstat.irqs[cpu][irq_num];
mask_irq(irq_num);
do_irq(®ion->action[irq], irq_num, regs);
unmask_irq(irq_num);
}
}
/*
* When the irq is requested HandleIRQ() starts.
* It invoke DoIRQ to enable other irqs,
* run IRQ handler.
* IF the handler is over,
* it enable the irq which are disabled by DoIRQ() at EndIRQ().
*/
void handle_irq(int irq)
{
#ifdef DEBUG
caos_printf("IRQ[%d] occured..\n", irq);
#endif
do_irq(irq);
irqhandler[irq]();
end_irq(irq);
}
static void do_service(config_t *cpe, config_t *config, struct rs_config *rs_config)
{
struct rs_start *rs_start = &rs_config->rs_start;
config_t *cp;
/* At this point we expect one sublist that contains the varios
* resource allocations
*/
if (!(cpe->flags & CFG_SUBLIST))
{
fatal("do_service: expected list at %s:%d",
cpe->file, cpe->line);
}
if (cpe->next != NULL)
{
cpe= cpe->next;
fatal("do_service: expected end of list at %s:%d",
cpe->file, cpe->line);
}
cpe= cpe->list;
/* Process the list */
for (cp= cpe; cp; cp= cp->next)
{
if (!(cp->flags & CFG_SUBLIST))
{
fatal("do_service: expected list at %s:%d",
cp->file, cp->line);
}
cpe= cp->list;
if ((cpe->flags & CFG_STRING) || (cpe->flags & CFG_SUBLIST))
{
fatal("do_service: expected word at %s:%d",
cpe->file, cpe->line);
}
if (strcmp(cpe->word, KW_CLASS) == 0)
{
do_class(cpe->next, config, rs_config);
continue;
}
if (strcmp(cpe->word, KW_UID) == 0)
{
do_uid(cpe->next, rs_start);
continue;
}
if (strcmp(cpe->word, KW_SIGMGR) == 0)
{
do_sigmgr(cpe->next, rs_start);
continue;
}
if (strcmp(cpe->word, KW_TYPE) == 0)
{
do_type(cpe->next, rs_config);
continue;
}
if (strcmp(cpe->word, KW_DESCR) == 0)
{
do_descr(cpe->next, rs_config);
continue;
}
if (strcmp(cpe->word, KW_SCHEDULER) == 0)
{
do_scheduler(cpe->next, rs_start);
continue;
}
if (strcmp(cpe->word, KW_PRIORITY) == 0)
{
do_priority(cpe->next, rs_start);
continue;
}
if (strcmp(cpe->word, KW_QUANTUM) == 0)
{
do_quantum(cpe->next, rs_start);
continue;
}
if (strcmp(cpe->word, KW_CPU) == 0)
{
do_cpu(cpe->next, rs_start);
continue;
}
if (strcmp(cpe->word, KW_IRQ) == 0)
{
do_irq(cpe->next, rs_start);
continue;
}
if (strcmp(cpe->word, KW_IO) == 0)
{
do_io(cpe->next, rs_start);
continue;
}
if (strcmp(cpe->word, KW_PCI) == 0)
{
do_pci(cpe->next, rs_start);
continue;
}
if (strcmp(cpe->word, KW_SYSTEM) == 0)
{
do_system(cpe->next, rs_start);
continue;
}
if (strcmp(cpe->word, KW_IPC) == 0)
{
do_ipc(cpe->next, rs_start);
continue;
}
if (strcmp(cpe->word, KW_VM) == 0)
{
do_vm(cpe->next, rs_start);
continue;
}
if (strcmp(cpe->word, KW_CONTROL) == 0)
{
do_control(cpe->next, rs_start);
continue;
}
}
}