irq_32.h File Reference

#include <linux/interrupt.h>

Go to the source code of this file.

Macros
#define	NR_IRQS   64
#define	irq_canonicalize(irq)   (irq)
#define	NO_IRQ   0xffffffff

Functions
void __init	init_IRQ (void)

Macro Definition Documentation

#define irq_canonicalize

(

irq

)

(irq)

Definition at line 17 of file irq_32.h.

#define NO_IRQ   0xffffffff

Definition at line 21 of file irq_32.h.

#define NR_IRQS   64

Definition at line 13 of file irq_32.h.

Function Documentation

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 109 of file irq_alpha.c.