struct irq_data
Prev | Chapter 8. Structures | Next

## Name

struct irq_data — per irq and irq chip data passed down to chip functions

## Synopsis

    struct irq_data {
      u32 mask;
      unsigned int irq;
      unsigned long hwirq;
      unsigned int node;
      unsigned int state_use_accessors;
      struct irq_chip * chip;
      struct irq_domain * domain;
      void * handler_data;
      void * chip_data;
      struct msi_desc * msi_desc;
      cpumask_var_t affinity;
    };

## Members

mask

  precomputed bitmask for accessing the chip registers

irq

  interrupt number

hwirq

  hardware interrupt number, local to the interrupt domain

node

  node index useful for balancing

state_use_accessors

  status information for irq chip functions. Use accessor functions to deal with it

chip

  low level interrupt hardware access

domain

  Interrupt translation domain; responsible for mapping between hwirq number and linux irq number.

handler_data

  per-IRQ data for the irq_chip methods

chip_data

  platform-specific per-chip private data for the chip methods, to allow shared chip implementations

msi_desc

  MSI descriptor

affinity

  IRQ affinity on SMP

## Description

The fields here need to overlay the ones in irq_desc until we cleaned up the direct references and switched everything over to irq_data.

Prev | Up | Next
Chapter 8. Structures | Home | struct irq_chip