diff options
Diffstat (limited to 'include/linux/msi.h')
| -rw-r--r-- | include/linux/msi.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/include/linux/msi.h b/include/linux/msi.h index b5ca2456769c..7a93a988dce8 100644 --- a/include/linux/msi.h +++ b/include/linux/msi.h @@ -115,6 +115,9 @@ struct msi_controller { }; #ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN + +#include <asm/msi.h> + struct irq_domain; struct irq_chip; struct device_node; @@ -125,6 +128,18 @@ struct msi_domain_info; * @get_hwirq: Retrieve the resulting hw irq number * @msi_init: Domain specific init function for MSI interrupts * @msi_free: Domain specific function to free a MSI interrupts + * @msi_check: Callback for verification of the domain/info/dev data + * @msi_prepare: Prepare the allocation of the interrupts in the domain + * @msi_finish: Optional callbacl to finalize the allocation + * @set_desc: Set the msi descriptor for an interrupt + * @handle_error: Optional error handler if the allocation fails + * + * @get_hwirq, @msi_init and @msi_free are callbacks used by + * msi_create_irq_domain() and related interfaces + * + * @msi_check, @msi_prepare, @msi_finish, @set_desc and @handle_error + * are callbacks used by msi_irq_domain_alloc_irqs() and related + * interfaces which are based on msi_desc. */ struct msi_domain_ops { irq_hw_number_t (*get_hwirq)(struct msi_domain_info *info, void *arg); @@ -135,6 +150,17 @@ struct msi_domain_ops { void (*msi_free)(struct irq_domain *domain, struct msi_domain_info *info, unsigned int virq); + int (*msi_check)(struct irq_domain *domain, + struct msi_domain_info *info, + struct device *dev); + int (*msi_prepare)(struct irq_domain *domain, + struct device *dev, int nvec, + msi_alloc_info_t *arg); + void (*msi_finish)(msi_alloc_info_t *arg, int retval); + void (*set_desc)(msi_alloc_info_t *arg, + struct msi_desc *desc); + int (*handle_error)(struct irq_domain *domain, + struct msi_desc *desc, int error); }; /** @@ -155,6 +181,9 @@ int msi_domain_set_affinity(struct irq_data *data, const struct cpumask *mask, struct irq_domain *msi_create_irq_domain(struct device_node *of_node, struct msi_domain_info *info, struct irq_domain *parent); +int msi_domain_alloc_irqs(struct irq_domain *domain, struct device *dev, + int nvec); +void msi_domain_free_irqs(struct irq_domain *domain, struct device *dev); struct msi_domain_info *msi_get_domain_info(struct irq_domain *domain); #endif /* CONFIG_GENERIC_MSI_IRQ_DOMAIN */ |