Manual Pages for UNIX Operating System command usage for man ddi_dma_free

Kernel Functions for Drivers                     ddi_dma_free(9F)



NAME
     ddi_dma_free - release system DMA resources

SYNOPSIS
     #include 
     #include 



     int ddi_dma_free(ddi_dma_handle_t handle);


INTERFACE LEVEL
     This interface is obsolete.  ddi_dma_free_handle(9F)  should
     be used instead.

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


DESCRIPTION
     The ddi_dma_free() function releases  system  DMA  resources
     set  up by ddi_dma_setup(9F). When a DMA transfer completes,
     the driver should free up system DMA  resources  established
     by  a  call  to ddi_dma_setup(9F). This is done by a call to
     ddi_dma_free().    ddi_dma_free()    does    an     implicit
     ddi_dma_sync(9F)  for  you  so  any  further synchronization
     steps are not necessary.

RETURN VALUES
     The ddi_dma_free() function returns:

     DDI_SUCCESS    Successfully released resources


     DDI_FAILURE    Failed to free resources


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

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









SunOS 5.11          Last change: 16 Jan 2006                    1






Kernel Functions for Drivers                     ddi_dma_free(9F)



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


SEE ALSO
     attributes(5),                       ddi_dma_addr_setup(9F),
     ddi_dma_buf_setup(9F),              ddi_dma_free_handle(9F),
     ddi_dma_htoc(9F), ddi_dma_sync(9F), ddi_dma_req(9S)


     Writing Device Drivers









































SunOS 5.11          Last change: 16 Jan 2006                    2