irq.c File Reference

#include <linux/module.h>
#include <linux/seq_file.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/kernel_stat.h>
#include <asm/uaccess.h>
#include <asm/platform.h>

Go to the source code of this file.

Functions
asmlinkage void	do_IRQ (int irq, struct pt_regs *regs)
int	arch_show_interrupts (struct seq_file *p, int prec)
void __init	init_IRQ (void)

Variables
atomic_t	irq_err_count

Function Documentation

int arch_show_interrupts	(	struct seq_file *	p,
		int	prec
	)

Definition at line 65 of file irq.c.

asmlinkage void do_IRQ	(	int	irq,
		struct pt_regs *	regs
	)

Definition at line 35 of file irq.c.

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 118 of file irq.c.

Variable Documentation

atomic_t irq_err_count

Definition at line 27 of file irq.c.