LDI_GET_EVENTCOOKIE(9F) Kernel Functions for Drivers

NAME

ldi_get_eventcookie - retrieve NDI event service cookie

SYNOPSIS

#include <sys/ddi_obsolete.h>

int ldi_get_eventcookie(ldi_handle_t lh, char *name
ddi_eventcookie_t *ecp);

INTERFACE LEVEL

Obsolete

PARAMETERS

ldi_handle_t lh
Layered handle.


char *name
null-terminated string containing the event
name.


ddi_eventcookie_t *ecp
Pointer to the kernel event cookie.

DESCRIPTION

This function is obsolete and is only maintained for compatibility.
Use of this function is strongly discouraged. For equivalent
functionality provided by new interfaces, see ldi_ev_get_cookie(9F)
and ldi_ev_register_callbacks(9F).


The ldi_get_eventcookie() function queries the device tree for a
cookie matching the given event name and returns a reference to that
cookie. The search is performed by calling up the device tree
hierarchy of the device represented by the layered driver handle
until the request is satisfied by a bus nexus driver, or the top of
the dev_info tree is reached.


The cookie returned by this function can be used to register a
callback handler with ldi_add_event_handler(9F).

RETURN VALUES

DDI_SUCCESS
Cookie handle is returned.


DDI_FAILURE
Request was not serviceable by any nexus driver in the
target device's ancestral device tree hierarchy.

CONTEXT

This function may be called from user or kernel contexts.

SEE ALSO

ldi_add_event_handler(9F), ldi_ev_get_cookie(9F),
ldi_ev_register_callbacks(9F), ldi_remove_event_handler(9F)


Writing Device Drivers

August 21, 2007 LDI_GET_EVENTCOOKIE(9F)