ddi_dma_unbind_handle(9F)

NAME | SYNOPSIS | PARAMETERS | INTERFACE LEVEL | DESCRIPTION | RETURN VALUES | CONTEXT | SEE ALSO

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);

PARAMETERS

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_SUCCESS

on success

DDI_FAILURE

on failure

CONTEXT

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

SEE ALSO

ddi_dma_addr_bind_handle(9F), ddi_dma_alloc_handle(9F), ddi_dma_buf_bind_handle(9F), ddi_dma_free_handle(9F), ddi_dma_sync(9F)

Writing Device Drivers

SunOS 5.9  Last Revised 26 Sep 1994

NAME | SYNOPSIS | PARAMETERS | INTERFACE LEVEL | DESCRIPTION | RETURN VALUES | CONTEXT | SEE ALSO