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…
irq_chip_set_vcpu_affinity_parent – Set vcpu affinity on the parent interrupt Synopsis int irq_chip_set_vcpu_affinity_parent(struct irq_data *data, void *vcpu_info); Arguments data Pointer to interrupt specific data vcpu_info The vcpu affinity information Authors Thomas Gleixner <tglx [at] linutronix.de> Author. Ingo Molnar <mingo [at] elte.hu> Author. Copyright
irq_chip_set_type_parent – Set IRQ type on the parent interrupt Synopsis int irq_chip_set_type_parent(struct irq_data *data, unsigned int type); Arguments data Pointer to interrupt specific data type IRQ_TYPE_{LEVEL,EDGE}_* value – see include/linux/irq.h Description Conditional, as the underlying parent chip might not implement it. Authors Thomas Gleixner <tglx [at] linutronix.de> Author. Ingo Molnar <mingo [at] elte.hu> Author. Copyright
irq_chip_set_affinity_parent – Set affinity on the parent interrupt Synopsis int irq_chip_set_affinity_parent(struct irq_data *data, const struct cpumask *dest, bool force); Arguments data Pointer to interrupt specific data dest The affinity mask to set force Flag to enforce setting (disable online checks) Description Conditinal, as the underlying parent chip might not implement it. Authors Thomas Gleixner <tglx…
irq_chip_retrigger_hierarchy – Retrigger an interrupt in hardware Synopsis int irq_chip_retrigger_hierarchy(struct irq_data *data); Arguments data Pointer to interrupt specific data Description Iterate through the domain hierarchy of the interrupt and check whether a hw retrigger function exists. If yes, invoke it. Authors Thomas Gleixner <tglx [at] linutronix.de> Author. Ingo Molnar <mingo [at] elte.hu> Author. Copyright
irq_chip_pm_put – Disable power for an IRQ chip Synopsis int irq_chip_pm_put(struct irq_data *data); Arguments data Pointer to interrupt specific data Description Disable the power to the IRQ chip referenced by the interrupt data structure, belongs. Note that power will only be disabled, once this function has been called for all IRQs that have called irq_chip_pm_get….
irq_chip_pm_get – Enable power for an IRQ chip Synopsis int irq_chip_pm_get(struct irq_data *data); Arguments data Pointer to interrupt specific data Description Enable the power to the IRQ chip referenced by the interrupt data structure. Authors Thomas Gleixner <tglx [at] linutronix.de> Author. Ingo Molnar <mingo [at] elte.hu> Author. Copyright
irq_chip_mask_parent – Mask the parent interrupt Synopsis void irq_chip_mask_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