static void combiner_handle_cascade_irq(unsigned int irq, struct irq_desc *desc)
{
struct combiner_chip_data *chip_data = irq_get_handler_data(irq);
struct irq_chip *chip = irq_get_chip(irq);
unsigned int cascade_irq, combiner_irq;
unsigned long status;
chained_irq_enter(chip, desc);
spin_lock(&irq_controller_lock);
status = __raw_readl(chip_data->base + COMBINER_INT_STATUS);
spin_unlock(&irq_controller_lock);
status &= chip_data->irq_mask;
if (status == 0)
goto out;
combiner_irq = chip_data->hwirq_offset + __ffs(status);
cascade_irq = irq_find_mapping(combiner_irq_domain, combiner_irq);
if (unlikely(!cascade_irq))
handle_bad_irq(irq, desc);
else
generic_handle_irq(cascade_irq);
out:
chained_irq_exit(chip, desc);
}
static void rps_handle_cascade_irq(struct irq_desc *desc)
#endif
{
struct rps_chip_data *chip_data = irq_desc_get_handler_data(desc);
struct irq_chip *chip = irq_desc_get_chip(desc);
unsigned int cascade_irq, rps_irq;
u32 status;
chained_irq_enter(chip, desc);
status = ioread32(chip_data->base + RPS_STATUS);
rps_irq = __ffs(status);
cascade_irq = irq_find_mapping(chip_data->domain, rps_irq);
if (unlikely(rps_irq >= RPS_IRQ_COUNT))
#if LINUX_VERSION_CODE < KERNEL_VERSION(4,2,0)
handle_bad_irq(cascade_irq, desc);
#else
handle_bad_irq(desc);
#endif
else
void __ipipe_ack_bad_irq(unsigned irq, struct irq_desc *desc)
{
static int done;
handle_bad_irq(irq, desc);
if (!done) {
printk(KERN_WARNING "%s: unknown flow handler for IRQ %d\n",
__FUNCTION__, irq);
done = 1;
}
}
asmlinkage void asm_do_IRQ(unsigned int irq, struct pt_regs *regs)
{
struct pt_regs *old_regs = set_irq_regs(regs);
irq_enter();
check_stack_overflow(irq);
/*
* Some hardware gives randomly wrong interrupts. Rather
* than crashing, do something sensible.
*/
if (irq >= NR_IRQS)
handle_bad_irq(&bad_irq_desc);
else
generic_handle_irq(irq);
maybe_lower_to_irq14();
irq_exit();
set_irq_regs(old_regs);
}
