diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/irq/msi.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/kernel/irq/msi.c b/kernel/irq/msi.c index b5559fa609eb..4830b7575e0a 100644 --- a/kernel/irq/msi.c +++ b/kernel/irq/msi.c @@ -912,6 +912,32 @@ struct irq_domain *msi_create_irq_domain(struct fwnode_handle *fwnode, } /** + * msi_create_parent_irq_domain - Create an MSI-parent interrupt domain + * @info: MSI irqdomain creation info + * @msi_parent_ops: MSI parent callbacks and configuration + * + * Return: pointer to the created &struct irq_domain or %NULL on failure + */ +struct irq_domain *msi_create_parent_irq_domain(struct irq_domain_info *info, + const struct msi_parent_ops *msi_parent_ops) +{ + struct irq_domain *d; + + info->hwirq_max = max(info->hwirq_max, info->size); + info->size = info->hwirq_max; + info->domain_flags |= IRQ_DOMAIN_FLAG_MSI_PARENT; + info->bus_token = msi_parent_ops->bus_select_token; + + d = irq_domain_instantiate(info); + if (IS_ERR(d)) + return NULL; + + d->msi_parent_ops = msi_parent_ops; + return d; +} +EXPORT_SYMBOL_GPL(msi_create_parent_irq_domain); + +/** * msi_parent_init_dev_msi_info - Delegate initialization of device MSI info down * in the domain hierarchy * @dev: The device for which the domain should be created |