Individual

API for managing individual IRQ handlers. More...

Functions
int	irq_set_handler (irq_t code, irq_handler hnd, void *data)
	Set or remove an IRQ handler.
irq_cb_t	irq_get_handler (irq_t code)
	Get the address of the current handler for the IRQ type.

Detailed Description

API for managing individual IRQ handlers.

This API is for managing handlers installed to handle individual IRQ codes.

Function Documentation

irq_get_handler()

irq_cb_t irq_get_handler

(

irq_t

code

)

Get the address of the current handler for the IRQ type.

Parameters

code	The IRQ type to look up.

Returns

The current handler for the IRQ type and its userdata.

See also

irq_set_handler()

irq_set_handler()

int irq_set_handler	(	irq_t	code,
		irq_handler	hnd,
		void *	data )

Set or remove an IRQ handler.

Passing a NULL value for hnd will remove the current handler, if any.

Parameters

code	The IRQ type to set the handler for (see irq_t).
hnd	A pointer to a procedure to handle the exception.
data	A pointer that will be passed along to the callback.

Return values

0	On success.
-1	If the code is invalid.

See also

irq_get_handler()