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Kernel Functions for Drivers

ddi_dma_get_attr(9F)

INTERFACE LEVEL
PARAMETERS
DESCRIPTION
RETURN VALUES
CONTEXT
SEE ALSO

NAME

ddi_dma_get_attr - get the device DMA attribute structure from a DMA handle

SYNOPSIS

#include <sys/ddi.h> #include <sys/sunddi.h> int ddi_dma_get_attr(ddi_dma_handle_t handle, ddi_dma_attr_t *attrp);

INTERFACE LEVEL

Solaris DDI specific (Solaris DDI)

PARAMETERS

handle: The handle filled in by a call to ddi_dma_alloc_handle(9F).
attrp: Pointer to a buffer suitable for holding a DMA attribute structure. See ddi_dma_attr(9S).

DESCRIPTION

ddi_dma_get_attr() is used to get a ddi_dma_attr(9S) structure. This structure describes the attributes of the DMA data path to which any memory object bound to the given handle will be subject.

RETURN VALUES

DDI_SUCCESS: Successfully passed back attribute structure in buffer pointed to by attrp.
DDI_DMA_BADATTR: A valid attribute structure could not be passed back.

CONTEXT

ddi_dma_get_attr() can be called from any context.