Kernel Functions for Drivers                   ddidmanumwin(9F)



NAME
     ddidmanumwin - retrieve number of DMA windows

SYNOPSIS
     #include 
     #include 



     int ddidmanumwin(ddidmahandlet handle, uintt *nwinp);


PARAMETERS
     handle     The  DMA handle previously allocated by a call to
                ddidmaallochandle(9F).


     nwinp      Upon a successful return,  nwinp will contain the
                number of  DMA windows for this object.


INTERFACE LEVEL
     Solaris DI specific (Solaris DI).

DESCRIPTION
     ddidmanumwin() returns the number of  DMA  windows  for  a
     DMA object if partial resource allocation was permitted.

RETURN VALUES
     ddidmanumwin() returns:

     DISUCES     Successfully filled in the  number  of   DMA
                     windows.


     DIFAILURE     DMA windows are not activated.


CONTEXT
     ddidmanumwin() can be called from user, kernel, or  inter-
     rupt context.

SEE ALSO
     ddidmaaddrbindhandle(9F),      ddidmaallochandle(9F),
     ddidmabufbindhandle(9F), ddidmaunbindhandle(9F)


     Writing Device Drivers







SunOS 5.11          Last change: 29 Sep 1994                    1