Content-type: text/html Man page of ddi_dma_burstsizes

ddi_dma_burstsizes

Section: Kernel Functions for Drivers (9F)
Updated: 1 Feb 1994
Index Return to Main Contents
 

NAME

ddi_dma_burstsizes - find out the allowed burst sizes for a DMA mapping  

SYNOPSIS

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

int ddi_dma_burstsizes(ddi_dma_handle_t handle);  

INTERFACE LEVEL

Solaris DDI specific (Solaris DDI).  

PARAMETERS

handle A DMA handle that was filled in by a successful call to ddi_dma_setup(9F).

 

DESCRIPTION

ddi_dma_burstsizes() returns the allowed burst sizes for a DMA mapping. This value is derived from the dlim_burstsizes member of the ddi_dma_lim_sparc(9S) structure, but it shows the allowable burstsizes after imposing on it the limitations of other device layers in addition to device's own limitations.  

RETURN VALUES

ddi_dma_burstsizes() returns a binary encoded value of the allowable DMA burst sizes. See ddi_dma_lim_sparc(9S) for a discussion of DMA burst sizes.  

CONTEXT

This function can be called from user or interrupt context.  

SEE ALSO

ddi_dma_devalign(9F), ddi_dma_setup(9F), ddi_dma_lim_sparc(9S), ddi_dma_req(9S)

Writing Device Drivers


 

Index

NAME
SYNOPSIS
INTERFACE LEVEL
PARAMETERS
DESCRIPTION
RETURN VALUES
CONTEXT
SEE ALSO

This document was created by man2html, using the manual pages.
Time: 02:39:39 GMT, October 02, 2010