Exemplo n.º 1
0
/**
 * irq_destroy_ipi() - unreserve an IPI that was previously allocated
 * @irq:	linux irq number to be destroyed
 * @dest:	cpumask of cpus which should have the IPI removed
 *
 * The IPIs allocated with irq_reserve_ipi() are retuerned to the system
 * destroying all virqs associated with them.
 *
 * Return 0 on success or error code on failure.
 */
int irq_destroy_ipi(unsigned int irq, const struct cpumask *dest)
{
	struct irq_data *data = irq_get_irq_data(irq);
	struct cpumask *ipimask = data ? irq_data_get_affinity_mask(data) : NULL;
	struct irq_domain *domain;
	unsigned int nr_irqs;

	if (!irq || !data || !ipimask)
		return -EINVAL;

	domain = data->domain;
	if (WARN_ON(domain == NULL))
		return -EINVAL;

	if (!irq_domain_is_ipi(domain)) {
		pr_warn("Trying to destroy a non IPI domain!\n");
		return -EINVAL;
	}

	if (WARN_ON(!cpumask_subset(dest, ipimask)))
		/*
		 * Must be destroying a subset of CPUs to which this IPI
		 * was set up to target
		 */
		return -EINVAL;

	if (irq_domain_is_ipi_per_cpu(domain)) {
		irq = irq + cpumask_first(dest) - data->common->ipi_offset;
		nr_irqs = cpumask_weight(dest);
	} else {
		nr_irqs = 1;
	}

	irq_domain_free_irqs(irq, nr_irqs);
	return 0;
}
Exemplo n.º 2
0
void native_teardown_msi_irq(unsigned int irq)
{
	irq_domain_free_irqs(irq, 1);
}
Exemplo n.º 3
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void dmar_free_hwirq(int irq)
{
	irq_domain_free_irqs(irq, 1);
}
Exemplo n.º 4
0
/*
 * Tear down a mapping of an irq and vector, and disable the specified MMR that
 * defined the MSI that was to be sent to the specified CPU when an interrupt
 * was raised.
 *
 * Set mmr_blade and mmr_offset to what was passed in on uv_setup_irq().
 */
void uv_teardown_irq(unsigned int irq)
{
	irq_domain_free_irqs(irq, 1);
}
Exemplo n.º 5
0
void its_free_vcpu_irqs(struct its_vm *vm)
{
	irq_domain_free_irqs(vm->vpes[0]->irq, vm->nr_vpes);
	irq_domain_remove(vm->domain);
	irq_domain_free_fwnode(vm->fwnode);
}
Exemplo n.º 6
0
void arch_teardown_ht_irq(unsigned int irq)
{
	irq_domain_free_irqs(irq, 1);
}