ddi_dma_burstsizes(9F) manual page
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ddi_dma_burstsizes - find out the allowed burst sizes for a DMA mapping
#include <sys/conf.h>
#include <sys/ddi.h>
#include <sys/sunddi.h>
int ddi_dma_burstsizes(ddi_dma_handle_t handle);
Solaris
DDI specific (Solaris DDI).
- handle
- A DMA
handle that was filled
in by a successful call to ddi_dma_setup(9F)
.
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.
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.
This function can be called
from user or interrupt context.
ddi_dma_devalign(9F)
, ddi_dma_setup(9F)
,
ddi_dma_lim_sparc(9S)
, ddi_dma_req(9S)
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