ddi_dma_htoc(9F) Kernel Functions for Drivers ddi_dma_htoc(9F)
NAME
ddi_dma_htoc - convert a DMA handle to a DMA address cookie
SYNOPSIS
#include <sys/conf.h>
#include <sys/ddi.h>
#include <sys/sunddi.h>
int ddi_dma_htoc(ddi_dma_handle_t handle, off_t off, ddi_dma_cookie_t *cookiep);
INTERFACE LEVEL
This interface is obsolete. ddi_dma_addr_bind_handle(9F) or ddi_dma_buf_bind_handle(9F) should be used instead.
PARAMETERS
handle The handle filled in by a call to ddi_dma_setup(9F).
off An offset into the object that handle maps.
cookiep A pointer to a ddi_dma_cookie(9S) structure.
DESCRIPTION
ddi_dma_htoc() takes a DMA handle (established by ddi_dma_setup(9F)), and fills in the cookie pointed to by cookiep with the appropriate
address, length, and bus type to be used to program the DMA engine.
RETURN VALUES
ddi_dma_htoc() returns:
DDI_SUCCESS Successfully filled in the cookie pointed to by cookiep.
DDI_FAILURE Failed to successfully fill in the cookie.
CONTEXT
ddi_dma_htoc() can be called from user or interrupt context.
ATTRIBUTES
See attributes(5) for a description of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Stability Level |Obsolete |
+-----------------------------+-----------------------------+
SEE ALSO
attributes(5), ddi_dma_addr_bind_handle(9F), ddi_dma_addr_setup(9F), ddi_dma_buf_bind_handle(9F), ddi_dma_buf_setup(9F), ddi_dma_setup(9F),
ddi_dma_sync(9F), ddi_dma_cookie(9S)
Writing Device Drivers
SunOS 5.10 27 Sep 2002 ddi_dma_htoc(9F)
