ddi_dma_unbind_handle(9F)

NAME

ddi_dma_unbind_handle − unbinds the address in a DMA handle

SYNOPSIS

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

int ddi_dma_unbind_handle(ddi_dma_handle_t handle);

ARGUMENTS

handle The DMA handle previously allocated by a call to ddi_dma_alloc_handle(9F).

INTERFACE LEVEL

Solaris DDI specific (Solaris DDI).

DESCRIPTION

ddi_dma_unbind_handle() frees all DMA resources associated with an existing DMA handle. When a DMA transfer completes, the driver should call ddi_dma_unbind_handle() to free system DMA resources established by a call to ddi_dma_buf_bind_handle(9F) or ddi_dma_addr_bind_handle(9F). ddi_dma_unbind_handle() does an implicit ddi_dma_sync(9F) making further synchronization steps unnecessary.

RETURN VALUES

ddi_dma_unbind_handle() returns:

DDI_SUCCESS
on success

DDI_FAILURE
on failure.

CONTEXT

ddi_dma_unbind_handle() can be called from user, kernel, or interrupt context.

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