Kernel Functions for Drivers                       ldidevmap(9F)



NAME
     ldidevmap - Issue a devmap request to a device

SYNOPSIS
     #include 

     int ldidevmap(ldihandlet lh, devmapcookiet dhp, offsett off,
          sizet len, sizet *maplen, uintt model);


PARAMETERS
     lh        Layered handle.


     dhp       Opaque  mapping  handle  used  by  the  system  to
               describe mapping.


     off       User offset within the logical  device  memory  at
               which mapping begins.


     len       Mapping length (in bytes).


     maplen    Pointer to length (in bytes) of validated mapping.
               (Less than or equal to len).


     model     Data model type of current thread.


DESCRIPTION
     The ldidevmap() function passes an devmap  request  to  the
     device  entry  point for the device specified by the layered
     handle. This operation is supported for character devices.

RETURN VALUES
     The ldidevmap() function  returns  0  upon  success.  If  a
     failure  occurs  before the request is passed to the device,
     possible return values are shown below. Otherwise any  other
     error number may be returned by the device.

     EINVAL     Invalid input parameters.


     ENOTSUP    Operation is not supported for this device.


CONTEXT
     This function may be called from user or kernel context.




SunOS 5.11          Last change: 3 June 2003                    1