static void request_ras_irqs(struct device_node *np, char *propname,
irqreturn_t (*handler)(int, void *, struct pt_regs *),
const char *name)
{
unsigned int *ireg, len, i;
int virq, n_intr;
ireg = (unsigned int *)get_property(np, propname, &len);
if (ireg == NULL)
return;
n_intr = prom_n_intr_cells(np);
len /= n_intr * sizeof(*ireg);
for (i = 0; i < len; i++) {
virq = virt_irq_create_mapping(*ireg);
if (virq == NO_IRQ) {
printk(KERN_ERR "Unable to allocate interrupt "
"number for %s\n", np->full_name);
return;
}
if (request_irq(irq_offset_up(virq), handler, 0, name, NULL)) {
printk(KERN_ERR "Unable to request interrupt %d for "
"%s\n", irq_offset_up(virq), np->full_name);
return;
}
ireg += n_intr;
}
}
/*
* New version of finish_node_interrupts.
*/
static unsigned long __init
finish_node_interrupts(struct device_node *np, unsigned long mem_start)
{
unsigned int *ints;
int intlen, intrcells;
int i, j, n, offset;
unsigned int *irq;
struct device_node *ic;
ints = (unsigned int *) get_property(np, "interrupts", &intlen);
if (ints == NULL)
return mem_start;
intrcells = prom_n_intr_cells(np);
intlen /= intrcells * sizeof(unsigned int);
np->n_intrs = intlen;
np->intrs = (struct interrupt_info *) mem_start;
mem_start += intlen * sizeof(struct interrupt_info);
for (i = 0; i < intlen; ++i) {
np->intrs[i].line = 0;
np->intrs[i].sense = 1;
n = map_interrupt(&irq, &ic, np, ints, intrcells);
if (n <= 0)
continue;
offset = 0;
/*
* On a CHRP we have an 8259 which is subordinate to
* the openpic in the interrupt tree, but we want the
* openpic's interrupt numbers offsetted, not the 8259's.
* So we apply the offset if the controller is at the
* root of the interrupt tree, i.e. has no interrupt-parent.
* This doesn't cope with the general case of multiple
* cascaded interrupt controllers, but then neither will
* irq.c at the moment either. -- paulus
*/
if (num_interrupt_controllers > 1 && ic != NULL
&& get_property(ic, "interrupt-parent", NULL) == NULL)
offset = 16;
np->intrs[i].line = irq[0] + offset;
if (n > 1)
np->intrs[i].sense = irq[1];
if (n > 2) {
printk("hmmm, got %d intr cells for %s:", n,
np->full_name);
for (j = 0; j < n; ++j)
printk(" %d", irq[j]);
printk("\n");
}
ints += intrcells;
}
return mem_start;
}