Subversion Repositories or1k_soc_on_altera_embedded_dev_kit

#include <linux/irq.h>

void set_pending_irq(unsigned int irq, cpumask_t mask)

{

        struct irq_desc *desc = irq_desc + irq;

        unsigned long flags;

        spin_lock_irqsave(&desc->lock, flags);

        desc->status |= IRQ_MOVE_PENDING;

        irq_desc[irq].pending_mask = mask;

        spin_unlock_irqrestore(&desc->lock, flags);

}

void move_masked_irq(int irq)

{

        struct irq_desc *desc = irq_desc + irq;

        cpumask_t tmp;

        if (likely(!(desc->status & IRQ_MOVE_PENDING)))

                return;

        /*

         * Paranoia: cpu-local interrupts shouldn't be calling in here anyway.

         */

        if (CHECK_IRQ_PER_CPU(desc->status)) {

                WARN_ON(1);

                return;

        }

        desc->status &= ~IRQ_MOVE_PENDING;

        if (unlikely(cpus_empty(irq_desc[irq].pending_mask)))

                return;

        if (!desc->chip->set_affinity)

                return;

        assert_spin_locked(&desc->lock);

        cpus_and(tmp, irq_desc[irq].pending_mask, cpu_online_map);

        /*

         * If there was a valid mask to work with, please

         * do the disable, re-program, enable sequence.

         * This is *not* particularly important for level triggered

         * but in a edge trigger case, we might be setting rte

         * when an active trigger is comming in. This could

         * cause some ioapics to mal-function.

         * Being paranoid i guess!

         *

         * For correct operation this depends on the caller

         * masking the irqs.

         */

        if (likely(!cpus_empty(tmp))) {

                desc->chip->set_affinity(irq,tmp);

        }

        cpus_clear(irq_desc[irq].pending_mask);

}

void move_native_irq(int irq)

{

        struct irq_desc *desc = irq_desc + irq;

        if (likely(!(desc->status & IRQ_MOVE_PENDING)))

                return;

        if (unlikely(desc->status & IRQ_DISABLED))

                return;

        desc->chip->mask(irq);

        move_masked_irq(irq);

        desc->chip->unmask(irq);

}