ddi_dma_buf_setup(9F) manual page
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ddi_dma_buf_setup - easier DMA setup for use with buffer structures
#include <sys/ddi.h>
#include <sys/sunddi.h>
int ddi_dma_buf_setup(dev_info_t *dip, struct buf *bp, u_int flags, int
(*waitfp)(caddr_t), caddr_t arg, ddi_dma_lim_t *lim, ddi_dma_handle_t
*handlep);
Solaris DDI specific (Solaris DDI).
- dip
- A pointer to the device’s dev_info structure.
- bp
- A pointer to a system buffer
structure (see buf(9S)
).
- flags
- Flags that go into a ddi_dma_req structure
(see ddi_dma_req(9S)
).
- waitfp
- The address of a function to call back later
if resources aren’t available now. The special function addresses DDI_DMA_SLEEP
and DDI_DMA_DONTWAIT
(see ddi_dma_req(9S)
) are taken to mean, respectively,
wait until resources are available, or do not wait at all and do not schedule
a callback.
- arg
- Argument to be passed to a callback function, if such a
function is specified.
- lim
- A pointer to a DMA
limits structure for this
device (see ddi_dma_lim_sparc(9S)
or ddi_dma_lim_x86(9S)
). If this pointer
is NULL,
a default set of DMA
limits is assumed.
- handlep
- Pointer to a DMA
handle. See ddi_dma_setup(9F)
for a discussion of handle.
ddi_dma_buf_setup()
is an interface to ddi_dma_setup(9F)
. It uses its arguments to construct
an appropriate ddi_dma_req structure and calls ddi_dma_setup() with it.
See ddi_dma_setup(9F)
for the possible return values for this
function.
ddi_dma_buf_setup() can be called from user or interrupt
context, except when waitfp is set to DDI_DMA_SLEEP,
in which case it
can be called from user context only.
ddi_dma_addr_setup(9F)
, ddi_dma_free(9F)
,
ddi_dma_htoc(9F)
, ddi_dma_setup(9F)
, ddi_dma_sync(9F)
, physio(9F)
, buf(9S)
,
ddi_dma_lim_sparc(9S)
, ddi_dma_lim_x86(9S)
, ddi_dma_req(9S)
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