mapdev_free(9E)

NAME | SYNOPSIS | INTERFACE LEVEL | PARAMETERS | DESCRIPTION | CONTEXT | EXAMPLES | SEE ALSO

NAME

mapdev_free- device mapping free entry point

SYNOPSIS

#include <sys/sunddi.h> 

void prefixmapdev_free(ddi_mapdev_handle_t handle, void *devprivate);

INTERFACE LEVEL

Solaris DDI specific (Solaris DDI).

PARAMETERS

handle

An opaque pointer to a device mapping.

devprivate

Driver private mapping data from ddi_mapdev(9F).

DESCRIPTION

Future releases of Solaris will provide this function for binary and source compatibility. However, for increased functionality, use devmap_unmap(9E) instead. See devmap_unmap(9E) for details.

mapdev_free() is called when a mapping created by ddi_mapdev(9F) is being destroyed. mapdev_free() receives the handle of the mapping being destroyed and a pointer to the driver private data for this mapping in devprivate.

The mapdev_free() routine is expected to free any resources that were allocated by the driver for this mapping.

CONTEXT

This function is called from user context only.

EXAMPLES

---

Example 1 Using mapdev_free()




static void
xxmapdev_free(ddi_mapdev_handle_t hdl, void *pvtdata)
{
	        /* Destroy the driver private data - Device dependent */
	        ...
       	kmem_free(pvtdata, sizeof (struct xxpvtdata));
}

---

SEE ALSO

exit(2), mmap(2), munmap(2), mapdev_access(9E), mapdev_dup(9E), segmap(9E), ddi_mapdev(9F), ddi_mapdev_intercept(9F), ddi_mapdev_nointercept(9F), ddi_mapdev_ctl(9S)

Writing Device Drivers

SunOS 5.9  Last Revised 17 Dec 1996

NAME | SYNOPSIS | INTERFACE LEVEL | PARAMETERS | DESCRIPTION | CONTEXT | EXAMPLES | SEE ALSO