irq_set_irq_type – set the irq trigger type for an irq Synopsis int irq_set_irq_type(unsigned int irq, unsigned int type); Arguments irq irq number type IRQ_TYPE_{LEVEL,EDGE}_* value – see include/linux/irq.h Authors Thomas Gleixner <tglx [at] linutronix.de> Author. Ingo Molnar <mingo [at] elte.hu> Author. Copyright
irq_set_handler_data – set irq handler data for an irq Synopsis int irq_set_handler_data(unsigned int irq, void *data); Arguments irq Interrupt number data Pointer to interrupt specific data Description Set the hardware irq controller data for an irq Authors Thomas Gleixner <tglx [at] linutronix.de> Author. Ingo Molnar <mingo [at] elte.hu> Author. Copyright
irq_set_chip_data – set irq chip data for an irq Synopsis int irq_set_chip_data(unsigned int irq, void *data); Arguments irq Interrupt number data Pointer to chip specific data Description Set the hardware irq chip data for an irq Authors Thomas Gleixner <tglx [at] linutronix.de> Author. Ingo Molnar <mingo [at] elte.hu> Author. Copyright
irq_set_chip – set the irq chip for an irq Synopsis int irq_set_chip(unsigned int irq, struct irq_chip *chip); Arguments irq irq number chip pointer to irq chip description structure Authors Thomas Gleixner <tglx [at] linutronix.de> Author. Ingo Molnar <mingo [at] elte.hu> Author. Copyright
irq_set_affinity_notifier – control notification of IRQ affinity changes Synopsis int irq_set_affinity_notifier(unsigned int irq, struct irq_affinity_notify *notify); Arguments irq Interrupt for which to enable/disable notification notify Context for notification, or NULL to disable notification. Function pointers must be initialised; the other fields will be initialised by this function. Description Must be called in process context. Notification…
irq_set_affinity – Set the irq affinity of a given irq Synopsis int irq_set_affinity(unsigned int irq, const struct cpumask *cpumask); Arguments irq Interrupt to set affinity cpumask cpumask Description Fails if cpumask does not contain an online CPU Authors Thomas Gleixner <tglx [at] linutronix.de> Author. Ingo Molnar <mingo [at] elte.hu> Author. Copyright
irq_remove_generic_chip – Remove a chip Synopsis void irq_remove_generic_chip(struct irq_chip_generic *gc, u32 msk, unsigned int clr, unsigned int set); Arguments gc Generic irq chip holding all data msk Bitmask holding the irqs to initialize relative to gc->irq_base clr IRQ_* bits to clear set IRQ_* bits to set Description Remove up to 32 interrupts starting from gc->irq_base….
irq_percpu_is_enabled – Check whether the per cpu irq is enabled Synopsis bool irq_percpu_is_enabled(unsigned int irq); Arguments irq Linux irq number to check for Description Must be called from a non migratable context. Returns the enable state of a per cpu interrupt on the current cpu. Copyright
irq_get_next_irq – get next allocated irq number Synopsis unsigned int irq_get_next_irq(unsigned int offset); Arguments offset where to start the search Description Returns next irq number after offset or nr_irqs if none is found. Authors Thomas Gleixner <tglx [at] linutronix.de> Author. Ingo Molnar <mingo [at] elte.hu> Author. Copyright
irq_get_irqchip_state – returns the irqchip state of a interrupt. Synopsis int irq_get_irqchip_state(unsigned int irq, enum irqchip_irq_state which, bool *state); Arguments irq Interrupt line that is forwarded to a VM which One of IRQCHIP_STATE_* the caller wants to know about state a pointer to a boolean where the state is to be storeed Description This call…
irq_get_domain_generic_chip – Get a pointer to the generic chip of a hw_irq Synopsis struct irq_chip_generic *irq_get_domain_generic_chip(struct irq_domain *d, unsigned int hw_irq); Arguments d irq domain pointer hw_irq Hardware interrupt number Authors Thomas Gleixner <tglx [at] linutronix.de> Author. Ingo Molnar <mingo [at] elte.hu> Author. Copyright
irq_gc_mask_set_bit – Mask chip via setting bit in mask register Synopsis void irq_gc_mask_set_bit(struct irq_data *d); Arguments d irq_data Description Chip has a single mask register. Values of this register are cached and protected by gc->lock Authors Thomas Gleixner <tglx [at] linutronix.de> Author. Ingo Molnar <mingo [at] elte.hu> Author. Copyright
irq_gc_mask_clr_bit – Mask chip via clearing bit in mask register Synopsis void irq_gc_mask_clr_bit(struct irq_data *d); Arguments d irq_data Description Chip has a single mask register. Values of this register are cached and protected by gc->lock Authors Thomas Gleixner <tglx [at] linutronix.de> Author. Ingo Molnar <mingo [at] elte.hu> Author. Copyright
irq_gc_ack_set_bit – Ack pending interrupt via setting bit Synopsis void irq_gc_ack_set_bit(struct irq_data *d); Arguments d irq_data Authors Thomas Gleixner <tglx [at] linutronix.de> Author. Ingo Molnar <mingo [at] elte.hu> Author. Copyright
irq_force_affinity – Force the irq affinity of a given irq Synopsis int irq_force_affinity(unsigned int irq, const struct cpumask *cpumask); Arguments irq Interrupt to set affinity cpumask cpumask Description Same as irq_set_affinity, but without checking the mask against online cpus. Solely for low level cpu hotplug code, where we need to make per cpu interrupts affine…
irq_disable – Mark interrupt disabled Synopsis void irq_disable(struct irq_desc *desc); Arguments desc irq descriptor which should be disabled Description If the chip does not implement the irq_disable callback, we use a lazy disable approach. That means we mark the interrupt disabled, but leave the hardware unmasked. That’s an optimization because we avoid the hardware access…
irq_cpu_online – Invoke all irq_cpu_online functions. Synopsis void irq_cpu_online(void); Arguments void no arguments Description Iterate through all irqs and invoke the chip.irq_cpu_online for each. Authors Thomas Gleixner <tglx [at] linutronix.de> Author. Ingo Molnar <mingo [at] elte.hu> Author. Copyright
irq_cpu_offline – Invoke all irq_cpu_offline functions. Synopsis void irq_cpu_offline(void); Arguments void no arguments Description Iterate through all irqs and invoke the chip.irq_cpu_offline for each. Authors Thomas Gleixner <tglx [at] linutronix.de> Author. Ingo Molnar <mingo [at] elte.hu> Author. Copyright
irq_chip_unmask_parent – Unmask the parent interrupt Synopsis void irq_chip_unmask_parent(struct irq_data *data); Arguments data Pointer to interrupt specific data Authors Thomas Gleixner <tglx [at] linutronix.de> Author. Ingo Molnar <mingo [at] elte.hu> Author. Copyright
irq_chip_set_wake_parent – Set/reset wake-up on the parent interrupt Synopsis int irq_chip_set_wake_parent(struct irq_data *data, unsigned int on); Arguments data Pointer to interrupt specific data on Whether to set or reset the wake-up capability of this irq Description Conditional, as the underlying parent chip might not implement it. Authors Thomas Gleixner <tglx [at] linutronix.de> Author. Ingo Molnar…