arch/avr32/include/arch/interrupt.h File Reference

AVR32-specific interrupt masking/unmasking. More...

#include <compiler.h>
#include <arch/sysreg.h>
#include <stdbool.h>

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Defines
#define	cpu_irq_is_enabled_flags(flags)   (!((flags) & SYSREG_SR_GM))
	Test if interrupts are enabled in flags.
#define	cpu_irq_is_enabled()   cpu_irq_is_enabled_flags(sysreg_read(SR))
	Test if interrupts are enabled.
Functions
static __always_inline unsigned long	cpu_irq_save (void)
	Save the current interrupt state and disable interrupts.
static __always_inline void	cpu_irq_restore (unsigned long flags)
	Restore saved interrupt state.
static bool	cpu_is_in_hardirq_handler (void)
	Test if the CPU is currently executing an interrupt handler.

---

Detailed Description

AVR32-specific interrupt masking/unmasking.

• Compiler: IAR EWAVR32 and GNU GCC for AVR32
• Supported devices: All AVR32 devices
• AppNote:

Author:

Atmel Corporation: http://www.atmel.com
Support and FAQ: http://support.atmel.no/

Definition in file interrupt.h.

---

Define Documentation

 

#define cpu_irq_is_enabled

(

)

cpu_irq_is_enabled_flags(sysreg_read(SR))

Test if interrupts are enabled.

Return values:

	true	If interrups are enabled
	false	If interrupts are disabled

Definition at line 87 of file interrupt.h.

Referenced by softirq_enable(), softirq_priv_do_pending(), udc_ep_submit_in_req(), and udc_ep_submit_out_req().

#define cpu_irq_is_enabled_flags

(

flags

)

(!((flags) & SYSREG_SR_GM))

Test if interrupts are enabled in flags.

Parameters:

flags

Saved interrupt state

Return values:

	true	If flags indicates interrups are enabled
	false	If flags indicates interrupts are disabled

Definition at line 79 of file interrupt.h.

---

Function Documentation

static __always_inline void cpu_irq_restore

(

unsigned long

flags

)

[static]

Restore saved interrupt state.

Parameters:

flags

A cookie returned by cpu_irq_save()

Definition at line 67 of file interrupt.h.

References avr32_write_sr, and barrier.

Referenced by console_drv_putchar(), console_drv_write(), gpio_register_irq_handler(), mem_pool_alloc(), mem_pool_free(), msc_do_read(), msc_queue_empty(), pm_priv_set_main_clock(), timer_do_pending(), udc_attach(), udc_detach(), udc_ep_clear_wedge(), udc_ep_create(), udc_ep_destroy(), udc_ep_flush(), udc_ep_set_wedge(), usbb_udc_configure_ep(), workqueue_add_item(), workqueue_add_item_safe(), and workqueue_remove_item().

static __always_inline unsigned long cpu_irq_save

(

void

)

[static]

Save the current interrupt state and disable interrupts.

Returns:

A cookie indicating the interrupt state before interrupts were disabled.

Definition at line 53 of file interrupt.h.

References cpu_irq_disable.

Referenced by console_drv_putchar(), console_drv_write(), gpio_register_irq_handler(), mem_pool_alloc(), mem_pool_free(), msc_do_read(), msc_queue_empty(), pm_priv_set_main_clock(), timer_do_pending(), udc_attach(), udc_detach(), udc_ep_clear_wedge(), udc_ep_create(), udc_ep_destroy(), udc_ep_flush(), udc_ep_set_wedge(), usbb_udc_configure_ep(), workqueue_add_item(), workqueue_add_item_safe(), and workqueue_remove_item().

static bool cpu_is_in_hardirq_handler

(

void

)

[inline, static]

Test if the CPU is currently executing an interrupt handler.

Return values:

	true	The CPU is in an interrupt handler
	false	The CPU is not in an interrupt handler

Definition at line 95 of file interrupt.h.