'\" t
.\"     Title: struct irq_data
.\"    Author: 
.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
.\"      Date: May 2018
.\"    Manual: Structures
.\"    Source: Kernel Hackers Manual 3.16.56
.\"  Language: English
.\"
.TH "STRUCT IRQ_DATA" "9" "May 2018" "Kernel Hackers Manual 3\&.16\&" "Structures"
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.SH "NAME"
struct_irq_data \- per irq and irq chip data passed down to chip functions
.SH "SYNOPSIS"
.sp
.nf
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;
};  
.fi
.SH "MEMBERS"
.PP
mask
.RS 4
precomputed bitmask for accessing the chip registers
.RE
.PP
irq
.RS 4
interrupt number
.RE
.PP
hwirq
.RS 4
hardware interrupt number, local to the interrupt domain
.RE
.PP
node
.RS 4
node index useful for balancing
.RE
.PP
state_use_accessors
.RS 4
status information for irq chip functions\&. Use accessor functions to deal with it
.RE
.PP
chip
.RS 4
low level interrupt hardware access
.RE
.PP
domain
.RS 4
Interrupt translation domain; responsible for mapping between hwirq number and linux irq number\&.
.RE
.PP
handler_data
.RS 4
per\-IRQ data for the irq_chip methods
.RE
.PP
chip_data
.RS 4
platform\-specific per\-chip private data for the chip methods, to allow shared chip implementations
.RE
.PP
msi_desc
.RS 4
MSI descriptor
.RE
.PP
affinity
.RS 4
IRQ affinity on SMP
.RE
.SH "DESCRIPTION"
.PP
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\&.
.SH "AUTHORS"
.PP
\fBThomas Gleixner\fR <\&tglx@linutronix.de\&>
.RS 4
Author.
.RE
.PP
\fBIngo Molnar\fR <\&mingo@elte.hu\&>
.RS 4
Author.
.RE
.SH "COPYRIGHT"
.br