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

NAME

ddi_regs_map_free - free a previously mapped register address space

SYNOPSIS

#include <sys/ddi.h>
#include <sys/sunddi.h>


void ddi_regs_map_free(ddi_acc_handle_t *handle);

INTERFACE LEVEL

illumos DDI specific (illumos DDI).

PARAMETERS

handle
Pointer to a data access handle previously allocated by a call
to a setup routine such as ddi_regs_map_setup(9F).

DESCRIPTION

ddi_regs_map_free() frees the mapping represented by the data access
handle handle. This function is provided for drivers preparing to detach
themselves from the system, allowing them to release allocated system
resources represented in the handle.

CONTEXT

ddi_regs_map_free() must be called from user or kernel context.

ATTRIBUTES

See attributes(7) for descriptions of the following attributes:


+---------------+--------------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+--------------------------+
|Architecture | PCI Local Bus, SBus, ISA |
+---------------+--------------------------+

SEE ALSO

attributes(7), ddi_regs_map_setup(9F)


Writing Device Drivers

November 18, 2004 DDI_REGS_MAP_FREE(9F)