setup_irq(9) [centos man page]
SETUP_IRQ(9) Public Functions Provided SETUP_IRQ(9) NAME
setup_irq - setup an interrupt SYNOPSIS
int setup_irq(unsigned int irq, struct irqaction * act); ARGUMENTS
irq Interrupt line to setup act irqaction for the interrupt DESCRIPTION
Used to statically setup interrupts in the early boot process. AUTHORS
Thomas Gleixner <tglx@linutronix.de> Author. Ingo Molnar <mingo@elte.hu> Author. COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 SETUP_IRQ(9)
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STRUCT
IRQ_CHIP_GENE(9) Structures STRUCT IRQ_CHIP_GENE(9) NAME
struct_irq_chip_generic - Generic irq chip data structure SYNOPSIS
struct irq_chip_generic { raw_spinlock_t lock; void __iomem * reg_base; unsigned int irq_base; unsigned int irq_cnt; u32 mask_cache; u32 type_cache; u32 polarity_cache; u32 wake_enabled; u32 wake_active; unsigned int num_ct; void * private; struct list_head list; struct irq_chip_type chip_types[0]; }; MEMBERS
lock Lock to protect register and cache data access reg_base Register base address (virtual) irq_base Interrupt base nr for this chip irq_cnt Number of interrupts handled by this chip mask_cache Cached mask register type_cache Cached type register polarity_cache Cached polarity register wake_enabled Interrupt can wakeup from suspend wake_active Interrupt is marked as an wakeup from suspend source num_ct Number of available irq_chip_type instances (usually 1) private Private data for non generic chip callbacks list List head for keeping track of instances chip_types[0] Array of interrupt irq_chip_types DESCRIPTION
Note, that irq_chip_generic can have multiple irq_chip_type implementations which can be associated to a particular irq line of an irq_chip_generic instance. That allows to share and protect state in an irq_chip_generic instance when we need to implement different flow mechanisms (level/edge) for it. AUTHORS
Thomas Gleixner <tglx@linutronix.de> Author. Ingo Molnar <mingo@elte.hu> Author. COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 STRUCT IRQ_CHIP_GENE(9)