irq_multilevel.h File Reference

Public interface for multi-level interrupts. More...

#include <zephyr/sys/util_macro.h>
#include <zephyr/types.h>

Go to the source code of this file.

Macros
#define	IRQ_TO_L2(irq)   ((irq + 1) << CONFIG_1ST_LEVEL_INTERRUPT_BITS)
	Preprocessor macro to convert irq from level 1 to level 2 format.
#define	IRQ_TO_L3(irq)    ((irq + 1) << (CONFIG_1ST_LEVEL_INTERRUPT_BITS + CONFIG_2ND_LEVEL_INTERRUPT_BITS))
	Preprocessor macro to convert irq from level 1 to level 3 format.

Functions
static unsigned int	irq_get_level (unsigned int irq)
	Return IRQ level This routine returns the interrupt level number of the provided interrupt.
static unsigned int	irq_from_level_2 (unsigned int irq)
	Return the 2nd level interrupt number.
static unsigned int	irq_to_level_2 (unsigned int irq)
	Converts irq from level 1 to level 2 format.
static unsigned int	irq_parent_level_2 (unsigned int irq)
	Returns the parent IRQ of the level 2 raw IRQ number.
static unsigned int	irq_from_level_3 (unsigned int irq)
	Return the 3rd level interrupt number.
static unsigned int	irq_to_level_3 (unsigned int irq)
	Converts irq from level 1 to level 3 format.
static unsigned int	irq_parent_level_3 (unsigned int irq)
	Returns the parent IRQ of the level 3 raw IRQ number.

Detailed Description

Public interface for multi-level interrupts.

Macro Definition Documentation

IRQ_TO_L2

#define IRQ_TO_L2

(

irq

)

((irq + 1) << CONFIG_1ST_LEVEL_INTERRUPT_BITS)

Preprocessor macro to convert irq from level 1 to level 2 format.

Parameters

irq	IRQ number in its zephyr format

Returns

2nd level IRQ number

IRQ_TO_L3

#define IRQ_TO_L3

(

irq

)

((irq + 1) << (CONFIG_1ST_LEVEL_INTERRUPT_BITS + CONFIG_2ND_LEVEL_INTERRUPT_BITS))

Preprocessor macro to convert irq from level 1 to level 3 format.

Parameters

irq	IRQ number in its zephyr format

Returns

3rd level IRQ number

Function Documentation

irq_from_level_2()

static unsigned int irq_from_level_2 ( unsigned int  irq )

inlinestatic

Return the 2nd level interrupt number.

This routine returns the second level irq number of the zephyr irq number passed in

Parameters

irq	IRQ number in its zephyr format

Returns

2nd level IRQ number

irq_from_level_3()

static unsigned int irq_from_level_3 ( unsigned int  irq )

inlinestatic

Return the 3rd level interrupt number.

This routine returns the third level irq number of the zephyr irq number passed in

Parameters

irq	IRQ number in its zephyr format

Returns

3rd level IRQ number

irq_get_level()

static unsigned int irq_get_level ( unsigned int  irq )

inlinestatic

Return IRQ level This routine returns the interrupt level number of the provided interrupt.

Parameters

irq	IRQ number in its zephyr format

Returns

1 if IRQ level 1, 2 if IRQ level 2, 3 if IRQ level 3

irq_parent_level_2()

static unsigned int irq_parent_level_2 ( unsigned int  irq )

inlinestatic

Returns the parent IRQ of the level 2 raw IRQ number.

The parent of a 2nd level interrupt is in the 1st byte

Parameters

irq	IRQ number in its zephyr format

Returns

2nd level IRQ parent

irq_parent_level_3()

static unsigned int irq_parent_level_3 ( unsigned int  irq )

inlinestatic

Returns the parent IRQ of the level 3 raw IRQ number.

The parent of a 3rd level interrupt is in the 2nd byte

Parameters

irq	IRQ number in its zephyr format

Returns

3rd level IRQ parent

irq_to_level_2()

static unsigned int irq_to_level_2 ( unsigned int  irq )

inlinestatic

Converts irq from level 1 to level 2 format.

This routine converts the input into the level 2 irq number format

Note

Values >= 0xFF are invalid

Parameters

irq	IRQ number in its zephyr format

Returns

2nd level IRQ number

irq_to_level_3()

static unsigned int irq_to_level_3 ( unsigned int  irq )

inlinestatic

Converts irq from level 1 to level 3 format.

This routine converts the input into the level 3 irq number format

Note

Values >= 0xFF are invalid

Parameters

irq	IRQ number in its zephyr format

Returns

3rd level IRQ number