Dataspace interface

Dataspace C interface. More...

Collaboration diagram for Dataspace interface:

Data Structures
struct	l4re_ds_stats_t
	Information about the data space. More...

Typedefs
typedef l4_cap_idx_t	l4re_ds_t
	Dataspace type.
typedef l4_cap_idx_t	l4re_namespace_t
	Dataspace type.

Functions
long	l4re_ds_clear (const l4re_ds_t ds, l4_addr_t offset, unsigned long size) L4_NOTHROW
long	l4re_ds_allocate (const l4re_ds_t ds, l4_addr_t offset, l4_size_t size) L4_NOTHROW
int	l4re_ds_copy_in (const l4re_ds_t ds, l4_addr_t dst_offs, const l4re_ds_t src, l4_addr_t src_offs, unsigned long size) L4_NOTHROW
long	l4re_ds_size (const l4re_ds_t ds) L4_NOTHROW
long	l4re_ds_flags (const l4re_ds_t ds) L4_NOTHROW
int	l4re_ds_info (const l4re_ds_t ds, l4re_ds_stats_t *stats) L4_NOTHROW
int	l4re_ds_phys (const l4re_ds_t ds, l4_addr_t offset, l4_addr_t *phys_addr, l4_size_t *phys_size) L4_NOTHROW
	Return physical address.

Detailed Description

Dataspace C interface.

Function Documentation

long l4re_ds_clear	(	const l4re_ds_t	ds,
		l4_addr_t	offset,
		unsigned long	size
	)

Returns

0 on success, <0 on errors

See Also

L4Re::Dataspace::clear

long l4re_ds_allocate	(	const l4re_ds_t	ds,
		l4_addr_t	offset,
		l4_size_t	size
	)

Returns

0 on success, <0 on errors

See Also

L4Re::Dataspace::allocate

int l4re_ds_copy_in	(	const l4re_ds_t	ds,
		l4_addr_t	dst_offs,
		const l4re_ds_t	src,
		l4_addr_t	src_offs,
		unsigned long	size
	)

Returns

0 on success, <0 on errors

See Also

L4Re::Dataspace::copy_in

long l4re_ds_size

(

const l4re_ds_t

ds

)

Returns

size of dataspace, <0 on errors

See Also

L4Re::Dataspace::size

long l4re_ds_flags

(

const l4re_ds_t

ds

)

See Also

L4Re::Dataspace::flags

int l4re_ds_info	(	const l4re_ds_t	ds,
		l4re_ds_stats_t *	stats
	)

See Also

L4Re::Dataspace::info

int l4re_ds_phys	(	const l4re_ds_t	ds,
		l4_addr_t	offset,
		l4_addr_t *	phys_addr,
		l4_size_t *	phys_size
	)

Return physical address.

Parameters

ds	Dataspace
offset	Offset in bytes in dataspace

Return values

phys_addr	Physical address
phys_size	Size of physically contiguous region starting from phys_addr (in bytes).

Returns

0 for success, <0 on error

The function returns the physical address of an offset in a dataspace. Use multiple calls of the function to get all physical regions in case of physically non-contiguous dataspaces.

See Also

L4Re::Dataspace::phys