Interrupt management

Functions
void	xnintr_destroy (struct xnintr *intr)
	Destroy an interrupt descriptor. More...
void	xnintr_detach (struct xnintr *intr)
	Detach an interrupt descriptor. More...
void	xnintr_enable (struct xnintr *intr)
	Enable an interrupt line. More...
void	xnintr_disable (struct xnintr *intr)
	Disable an interrupt line. More...

Detailed Description

Function Documentation

xnintr_destroy()

void xnintr_destroy

(

struct xnintr *

intr

)

Destroy an interrupt descriptor.

Destroys an interrupt descriptor previously initialized by xnintr_init(). The descriptor is automatically detached by a call to xnintr_detach(). No more IRQs will be received through this descriptor after this service has returned.

Parameters

intr	The address of the interrupt descriptor to destroy.

Tags

secondary-only

References xnintr_detach().

xnintr_detach()

void xnintr_detach

(

struct xnintr *

intr

)

Detach an interrupt descriptor.

This call unregisters an interrupt descriptor previously attached by xnintr_attach() from the interrupt pipeline. Once detached, the associated interrupt line is disabled, but the descriptor remains valid. The descriptor can be attached anew by a call to xnintr_attach().

Parameters

intr	The address of the interrupt descriptor to detach.

Note

The caller must not hold nklock when invoking this service, this would cause deadlocks.

Tags

secondary-only

Referenced by xnintr_destroy().

xnintr_disable()

void xnintr_disable

(

struct xnintr *

intr

)

Disable an interrupt line.

Disables the interrupt line associated with an interrupt descriptor.

Parameters

intr	The address of the interrupt descriptor.

Tags

secondary-only

xnintr_enable()

void xnintr_enable

(

struct xnintr *

intr

)

Enable an interrupt line.

Enables the interrupt line associated with an interrupt descriptor.

Parameters

intr	The address of the interrupt descriptor.

Tags

secondary-only