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Name

Synopsis

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

int ddi_dma_addr_setup(dev_info_t *dip, struct as *as, caddr_t addr, u_int len, u_int flags, int (*waitfp )(caddr_t), caddr_t arg, ddi_dma_lim_t *lim , ddi_dma_handle_t *handlep);

Interface Level

Solaris DDI specific (Solaris DDI).

Arguments

dip

A pointer to the device’s dev_info structure.

as

A pointer to an address space structure. Should be set to NULL , which implies kernel address space.

addr

Virtual address of the memory object.

len

Length of the memory object in bytes.

flags

Flags that would go into the 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.

Description

ddi_dma_addr_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.

Return Values

See ddi_dma_setup(9F) for the possible return values for this function.

Context

ddi_dma_addr_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.

See Also

Table of Contents

• Name
• Synopsis
• Interface Level
• Arguments
• Description
• Return Values
• Context
• See Also