diff options
| -rw-r--r-- | include/linux/irq.h | 62 | ||||
| -rw-r--r-- | kernel/irq/chip.c | 8 |
2 files changed, 66 insertions, 4 deletions
diff --git a/include/linux/irq.h b/include/linux/irq.h index e7e7ac83edd8..bea40556c5a6 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -85,6 +85,7 @@ typedef void (*irq_flow_handler_t)(unsigned int irq, #endif struct msi_desc; +struct irq_2_iommu; /** * struct irq_data - per irq and irq chip data passed down to chip functions @@ -332,11 +333,64 @@ extern int set_irq_data(unsigned int irq, void *data); extern int set_irq_chip_data(unsigned int irq, void *data); extern int set_irq_type(unsigned int irq, unsigned int type); extern int set_irq_msi(unsigned int irq, struct msi_desc *entry); +extern struct irq_data *irq_get_irq_data(unsigned int irq); -#define get_irq_chip(irq) (irq_to_desc(irq)->irq_data.chip) -#define get_irq_chip_data(irq) (irq_to_desc(irq)->irq_data.chip_data) -#define get_irq_data(irq) (irq_to_desc(irq)->irq_data.handler_data) -#define get_irq_msi(irq) (irq_to_desc(irq)->irq_data.msi_desc) +static inline struct irq_chip *get_irq_chip(unsigned int irq) +{ + struct irq_data *d = irq_get_irq_data(irq); + return d ? d->chip : NULL; +} + +static inline struct irq_chip *irq_data_get_irq_chip(struct irq_data *d) +{ + return d->chip; +} + +static inline void *get_irq_chip_data(unsigned int irq) +{ + struct irq_data *d = irq_get_irq_data(irq); + return d ? d->chip_data : NULL; +} + +static inline void *irq_data_get_irq_chip_data(struct irq_data *d) +{ + return d->chip_data; +} + +static inline void *get_irq_data(unsigned int irq) +{ + struct irq_data *d = irq_get_irq_data(irq); + return d ? d->handler_data : NULL; +} + +static inline void *irq_data_get_irq_data(struct irq_data *d) +{ + return d->handler_data; +} + +static inline struct msi_desc *get_irq_msi(unsigned int irq) +{ + struct irq_data *d = irq_get_irq_data(irq); + return d ? d->msi_desc : NULL; +} + +static inline struct msi_desc *irq_data_get_msi(struct irq_data *d) +{ + return d->msi_desc; +} + +#ifdef CONFIG_INTR_REMAP +static inline struct irq_2_iommu *get_irq_iommu(unsigned int irq) +{ + struct irq_data *d = irq_get_irq_data(irq); + return d ? d->irq_2_iommu : NULL; +} + +static inline struct irq_2_iommu *irq_data_get_iommu(struct irq_data *d) +{ + return d->irq_2_iommu; +} +#endif #endif /* CONFIG_GENERIC_HARDIRQS */ diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c index 2b1f6906b824..659be326c8e8 100644 --- a/kernel/irq/chip.c +++ b/kernel/irq/chip.c @@ -256,6 +256,14 @@ int set_irq_chip_data(unsigned int irq, void *data) } EXPORT_SYMBOL(set_irq_chip_data); +struct irq_data *irq_get_irq_data(unsigned int irq) +{ + struct irq_desc *desc = irq_to_desc(irq); + + return desc ? &desc->irq_data : NULL; +} +EXPORT_SYMBOL_GPL(irq_get_irq_data); + /** * set_irq_nested_thread - Set/Reset the IRQ_NESTED_THREAD flag of an irq * |