sunos man page for ddi_get_eventcookie

ddi_get_eventcookie(9F) 				   Kernel Functions for Drivers 				   ddi_get_eventcookie(9F)

NAME
       ddi_get_eventcookie - retrieve a NDI event service cookie handle

SYNOPSIS
       #include <sys/dditypes.h>
       #include <sys/sunddi.h>

       int ddi_get_eventcookie(dev_info_t *dip, char *name, ddi_eventcookie_t *event_cookiep);

INTERFACE LEVEL
       Solaris DDI specific (Solaris DDI).

PARAMETERS
       dev_info_t *dip

	   Child device node requesting the cookie.

       char *name

	   NULL-terminated string containing the name of the event.

       ddi_eventcookie_t *event_cookiep

	   Pointer to cookie where event cookie will be returned.

DESCRIPTION
       The  ddi_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 a calling up the device tree hierarchy 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, unregister a callback handler, or post an event.

RETURN VALUES
       DDI_SUCCESS

	   Cookie handle is returned.

       DDI_FAILURE

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

CONTEXT
       The ddi_get_eventcookie() function can be called from user and kernel contexts only.

ATTRIBUTES
       See attributes(5) for a description of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Stability Level 	     |Evolving			   |
       +-----------------------------+-----------------------------+

SEE ALSO
       attributes(5), ddi_add_event_handler(9F), ddi_remove_event_handler(9F)

       Writing Device Drivers

SunOS 5.10							    6 Nov 2003						   ddi_get_eventcookie(9F)