Manual Pages for UNIX Operating System command usage for man ddi_dma_devalign

Kernel Functions for Drivers                 ddi_dma_devalign(9F)



NAME
     ddi_dma_devalign - find DMA mapping  alignment  and  minimum
     transfer size

SYNOPSIS
     #include 
     #include 
     #include 



     int ddi_dma_devalign(ddi_dma_handle_t handle, uint_t *alignment,
          uint_t *minxfr);


INTERFACE LEVEL
     Solaris  DDI  specific  (Solaris  DDI).  This  interface  is
     obsolete.

PARAMETERS
     handle       The DMAhandle filled in by a successful call to
                  ddi_dma_setup(9F).


     alignment    A pointer to an unsigned integer to  be  filled
                  in with the minimum required alignment for DMA.
                  The alignment is guaranteed to be  a  power  of
                  two.


     minxfr       A pointer to an unsigned integer to  be  filled
                  in  with  the  minimum  effective transfer size
                  (see ddi_iomin(9F),  ddi_dma_lim_sparc(9S)  and
                  ddi_dma_lim_x86(9S)).  This  also is guaranteed
                  to be a power of two.


DESCRIPTION
     The ddi_dma_devalign() Function determines after a  success-
     ful DMA mapping (see ddi_dma_setup(9F)) the minimum required
     data alignment and minimum DMA transfer size.

RETURN VALUES
     The ddi_dma_devalign() function returns:

     DDI_SUCCESS    The alignment and  minxfr  values  have  been
                    filled.


     DDI_FAILURE    The handle was illegal.





SunOS 5.11          Last change: 04 Apr 2006                    1






Kernel Functions for Drivers                 ddi_dma_devalign(9F)



CONTEXT
     The ddi_dma_devalign() function can  be  called  from  user,
     interrupt, or kernel context.

ATTRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:



     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | Interface Stability         | Obsolete                    |
    |_____________________________|_____________________________|


SEE ALSO
     ddi_dma_setup(9F),   ddi_iomin(9F),   ddi_dma_lim_sparc(9S),
     ddi_dma_lim_x86(9S), ddi_dma_req(9S)


     Writing Device Drivers
































SunOS 5.11          Last change: 04 Apr 2006                    2