irq.c File Reference

#include <linux/export.h>
#include <linux/threads.h>
#include <linux/kernel_stat.h>
#include <linux/signal.h>
#include <linux/sched.h>
#include <linux/ptrace.h>
#include <linux/ioport.h>
#include <linux/interrupt.h>
#include <linux/timex.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/irq.h>
#include <linux/seq_file.h>
#include <linux/cpumask.h>
#include <linux/profile.h>
#include <linux/bitops.h>
#include <linux/list.h>
#include <linux/radix-tree.h>
#include <linux/mutex.h>
#include <linux/bootmem.h>
#include <linux/pci.h>
#include <linux/debugfs.h>
#include <linux/of.h>
#include <linux/of_irq.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#include <asm/pgtable.h>
#include <asm/irq.h>
#include <asm/cache.h>
#include <asm/prom.h>
#include <asm/ptrace.h>
#include <asm/machdep.h>
#include <asm/udbg.h>
#include <asm/smp.h>
#include <asm/debug.h>
#include <asm/trace.h>

Go to the source code of this file.

Macros
#define	CREATE_TRACE_POINTS

Functions
	DEFINE_PER_CPU_SHARED_ALIGNED (irq_cpustat_t, irq_stat)
	EXPORT_PER_CPU_SYMBOL (irq_stat)
int	arch_show_interrupts (struct seq_file *p, int prec)
u64	arch_irq_stat_cpu (unsigned int cpu)
void	do_IRQ (struct pt_regs *regs)
void __init	init_IRQ (void)
void	irq_ctx_init (void)
void	do_softirq (void)
irq_hw_number_t	virq_to_hw (unsigned int virq)
	EXPORT_SYMBOL_GPL (virq_to_hw)
int	irq_choose_cpu (const struct cpumask *mask)
int	arch_early_irq_init (void)

Variables
int	__irq_offset_value
struct thread_info *softirq_ctx[NR_CPUS]	__read_mostly

Macro Definition Documentation

#define CREATE_TRACE_POINTS

Definition at line 76 of file irq.c.

Function Documentation

int arch_early_irq_init

(

void

)

Definition at line 667 of file irq.c.

u64 arch_irq_stat_cpu

(

unsigned int

cpu

)

Definition at line 376 of file irq.c.

int arch_show_interrupts	(	struct seq_file *	p,
		int	prec
	)

Definition at line 337 of file irq.c.

DEFINE_PER_CPU_SHARED_ALIGNED	(	irq_cpustat_t	,
		irq_stat
	)

void do_IRQ

(

struct pt_regs *

regs

)

Definition at line 487 of file irq.c.

void do_softirq

(

void

)

Definition at line 609 of file irq.c.

EXPORT_PER_CPU_SYMBOL

(

irq_stat

)

EXPORT_SYMBOL_GPL

(

virq_to_hw

)

void __init init_IRQ

(

void

)

The hexagon core comes with a first-level interrupt controller with 32 total possible interrupts. When the core is embedded into different systems/platforms, it is typically wrapped by macro cells that provide one or more second-level interrupt controllers that are cascaded into one or more of the first-level interrupts handled here. The precise wiring of these other irqs varies from platform to platform, and are set up & configured in the platform-specific files.

The first-level interrupt controller is wrapped by the VM, which virtualizes the interrupt controller for us. It provides a very simple, fast & efficient API, and so the fasteoi handler is appropriate for this case.

Definition at line 520 of file irq.c.

int irq_choose_cpu

(

const struct cpumask *

mask

)

Definition at line 661 of file irq.c.

void irq_ctx_init

(

void

)

Definition at line 569 of file irq.c.

irq_hw_number_t virq_to_hw

(

unsigned int

virq

)

Definition at line 624 of file irq.c.

Variable Documentation

int __irq_offset_value

Definition at line 82 of file irq.c.

struct thread_info* hardirq_ctx [NR_CPUS] __read_mostly

Definition at line 566 of file irq.c.