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solaris:ddi_dma_htoc.9f

ddi_dma_htoc


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This interface is obsolete.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

The ddi_dma_htoc() function 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

The ddi_dma_htoc() function returns:

DDI_SUCCESS

Successfully filled in the cookie pointed to by cookiep.

DDI_FAILURE

Failed to successfully fill in the cookie.

CONTEXT

The ddi_dma_htoc() function can be called from user, interrupt, or kernel context.

ATTRIBUTES

See attributes(7) for a description of the following attributes:

SEE ALSO

attributes(7), 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 in Oracle Solaris 11.4


solaris/ddi_dma_htoc.9f.txt · Last modified: 2023/07/19 08:58 by A User Not Logged in