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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968" /><title>struct irq_chip</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><link rel="home" href="index.html" title="Linux generic IRQ handling" /><link rel="up" href="ch07.html" title="Chapter 7. Structures" /><link rel="prev" href="ch07.html" title="Chapter 7. Structures" /><link rel="next" href="re02.html" title="struct irq_desc" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>struct irq_chip</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ch07.html">Prev</a> </td><th width="60%" align="center">Chapter 7. Structures</th><td width="20%" align="right"> <a accesskey="n" href="re02.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="struct irq_chip"><a id="API-struct-irq-chip"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>struct irq_chip —
hardware interrupt chip descriptor
</p></div><div class="refsynopsisdiv" title="Synopsis"><h2>Synopsis</h2><pre class="programlisting">
struct irq_chip {
const char * name;
unsigned int (* startup) (unsigned int irq);
void (* shutdown) (unsigned int irq);
void (* enable) (unsigned int irq);
void (* disable) (unsigned int irq);
void (* ack) (unsigned int irq);
void (* mask) (unsigned int irq);
void (* mask_ack) (unsigned int irq);
void (* unmask) (unsigned int irq);
void (* eoi) (unsigned int irq);
void (* end) (unsigned int irq);
int (* set_affinity) (unsigned int irq,const struct cpumask *dest);
int (* retrigger) (unsigned int irq);
int (* set_type) (unsigned int irq, unsigned int flow_type);
int (* set_wake) (unsigned int irq, unsigned int on);
void (* bus_lock) (unsigned int irq);
void (* bus_sync_unlock) (unsigned int irq);
#ifdef CONFIG_IRQ_RELEASE_METHOD
void (* release) (unsigned int irq, void *dev_id);
#endif
const char * typename;
}; </pre></div><div class="refsect1" title="Members"><a id="id2540033"></a><h2>Members</h2><div class="variablelist"><dl><dt><span class="term">name</span></dt><dd><p>
name for /proc/interrupts
</p></dd><dt><span class="term">startup</span></dt><dd><p>
start up the interrupt (defaults to ->enable if NULL)
</p></dd><dt><span class="term">shutdown</span></dt><dd><p>
shut down the interrupt (defaults to ->disable if NULL)
</p></dd><dt><span class="term">enable</span></dt><dd><p>
enable the interrupt (defaults to chip->unmask if NULL)
</p></dd><dt><span class="term">disable</span></dt><dd><p>
disable the interrupt (defaults to chip->mask if NULL)
</p></dd><dt><span class="term">ack</span></dt><dd><p>
start of a new interrupt
</p></dd><dt><span class="term">mask</span></dt><dd><p>
mask an interrupt source
</p></dd><dt><span class="term">mask_ack</span></dt><dd><p>
ack and mask an interrupt source
</p></dd><dt><span class="term">unmask</span></dt><dd><p>
unmask an interrupt source
</p></dd><dt><span class="term">eoi</span></dt><dd><p>
end of interrupt - chip level
</p></dd><dt><span class="term">end</span></dt><dd><p>
end of interrupt - flow level
</p></dd><dt><span class="term">set_affinity</span></dt><dd><p>
set the CPU affinity on SMP machines
</p></dd><dt><span class="term">retrigger</span></dt><dd><p>
resend an IRQ to the CPU
</p></dd><dt><span class="term">set_type</span></dt><dd><p>
set the flow type (IRQ_TYPE_LEVEL/etc.) of an IRQ
</p></dd><dt><span class="term">set_wake</span></dt><dd><p>
enable/disable power-management wake-on of an IRQ
</p></dd><dt><span class="term">bus_lock</span></dt><dd><p>
function to lock access to slow bus (i2c) chips
</p></dd><dt><span class="term">bus_sync_unlock</span></dt><dd><p>
function to sync and unlock slow bus (i2c) chips
</p></dd><dt><span class="term">release</span></dt><dd><p>
release function solely used by UML
</p></dd><dt><span class="term">typename</span></dt><dd><p>
obsoleted by name, kept as migration helper
</p></dd></dl></div></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="ch07.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ch07.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="re02.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 7. Structures </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> <span>struct irq_desc</span></td></tr></table></div></body></html>
