On 2021-03-11 00:05, Pali Rohár wrote:
On Wednesday 24 February 2021 14:11:30 Jianjun Wang wrote:
+static int mtk_msi_bottom_domain_alloc(struct irq_domain *domain,
+ unsigned int virq, unsigned int nr_irqs,
+ void *arg)
+{
+ struct mtk_pcie_port *port = domain->host_data;
+ struct mtk_msi_set *msi_set;
+ int i, hwirq, set_idx;
+
+ mutex_lock(&port->lock);
+
+ hwirq = bitmap_find_free_region(port->msi_irq_in_use,
PCIE_MSI_IRQS_NUM,
+ order_base_2(nr_irqs));
+
+ mutex_unlock(&port->lock);
+
+ if (hwirq < 0)
+ return -ENOSPC;
+
+ set_idx = hwirq / PCIE_MSI_IRQS_PER_SET;
+ msi_set = &port->msi_sets[set_idx];
+
+ for (i = 0; i < nr_irqs; i++)
+ irq_domain_set_info(domain, virq + i, hwirq + i,
+ &mtk_msi_bottom_irq_chip, msi_set,
+ handle_edge_irq, NULL, NULL);
+
+ return 0;
+}
+
+static void mtk_msi_bottom_domain_free(struct irq_domain *domain,
+ unsigned int virq, unsigned int nr_irqs)
+{
+ struct mtk_pcie_port *port = domain->host_data;
+ struct irq_data *data = irq_domain_get_irq_data(domain, virq);
+
+ mutex_lock(&port->lock);
+
+ bitmap_clear(port->msi_irq_in_use, data->hwirq, nr_irqs);
Marc, should not be there bitmap_release_region() with order_base_2()?
bitmap_release_region(port->msi_irq_in_use, data->hwirq,
order_base_2(nr_irqs));
Because mtk_msi_bottom_domain_alloc() is allocating
order_base_2(nr_irqs) interrupts, not only nr_irqs.
Indeed, good catch.
Thanks,
M.
--
Jazz is not dead. It just smells funny...
