dma-buf.h File Reference

#include <linux/iosys-map.h>
#include <linux/file.h>
#include <linux/err.h>
#include <linux/scatterlist.h>
#include <linux/list.h>
#include <linux/dma-mapping.h>
#include <linux/fs.h>
#include <linux/uuid.h>
#include <linux/dma-fence.h>
#include <linux/wait.h>
#include <linux/pci-p2pdma.h>

Include dependency graph for dma-buf.h:

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Go to the source code of this file.

Classes
struct	dma_buf_ops
struct	dma_buf
struct	dma_buf::dma_buf_poll_cb_t
struct	dma_buf_attach_ops
struct	dma_buf_attachment
struct	dma_buf_export_info

: export-info name
DEFINE_DMA_BUF_EXPORT_INFO - helper macro for exporters DEFINE_DMA_BUF_EXPORT_INFO macro defines the &struct dma_buf_export_info, zeroes it out and pre-populates exp_name in it.
#define	DEFINE_DMA_BUF_EXPORT_INFO(name)
struct dma_buf_attachment *	dma_buf_attach (struct dma_buf *dmabuf, struct device *dev)
struct dma_buf_attachment *	dma_buf_dynamic_attach (struct dma_buf *dmabuf, struct device *dev, const struct dma_buf_attach_ops *importer_ops, void *importer_priv)
void	dma_buf_detach (struct dma_buf *dmabuf, struct dma_buf_attachment *attach)
int	dma_buf_pin (struct dma_buf_attachment *attach)
void	dma_buf_unpin (struct dma_buf_attachment *attach)
struct dma_buf *	dma_buf_export (const struct dma_buf_export_info *exp_info)
int	dma_buf_fd (struct dma_buf *dmabuf, int flags)
struct dma_buf *	dma_buf_get (int fd)
void	dma_buf_put (struct dma_buf *dmabuf)
struct sg_table *	dma_buf_map_attachment (struct dma_buf_attachment *, enum dma_data_direction)
void	dma_buf_unmap_attachment (struct dma_buf_attachment *, struct sg_table *, enum dma_data_direction)
void	dma_buf_invalidate_mappings (struct dma_buf *dma_buf)
bool	dma_buf_attach_revocable (struct dma_buf_attachment *attach)
int	dma_buf_begin_cpu_access (struct dma_buf *dma_buf, enum dma_data_direction dir)
int	dma_buf_end_cpu_access (struct dma_buf *dma_buf, enum dma_data_direction dir)
struct sg_table *	dma_buf_map_attachment_unlocked (struct dma_buf_attachment *attach, enum dma_data_direction direction)
void	dma_buf_unmap_attachment_unlocked (struct dma_buf_attachment *attach, struct sg_table *sg_table, enum dma_data_direction direction)
int	dma_buf_mmap (struct dma_buf *, struct vm_area_struct *, unsigned long)
int	dma_buf_vmap (struct dma_buf *dmabuf, struct iosys_map *map)
void	dma_buf_vunmap (struct dma_buf *dmabuf, struct iosys_map *map)
int	dma_buf_vmap_unlocked (struct dma_buf *dmabuf, struct iosys_map *map)
void	dma_buf_vunmap_unlocked (struct dma_buf *dmabuf, struct iosys_map *map)
struct dma_buf *	dma_buf_iter_begin (void)
struct dma_buf *	dma_buf_iter_next (struct dma_buf *dmbuf)

Detailed Description

File pointer used for sharing buffers across, and for refcounting. See dma_buf_get() and dma_buf_put().

Macro Definition Documentation

DEFINE_DMA_BUF_EXPORT_INFO

#define DEFINE_DMA_BUF_EXPORT_INFO

(

name

)

Value:

    struct dma_buf_export_info name = { .exp_name = KBUILD_MODNAME, \
                     .owner = THIS_MODULE }

Function Documentation

dma_buf_attach()

struct dma_buf_attachment * dma_buf_attach	(	struct dma_buf *	dmabuf,
		struct device *	dev
	)

dma_buf_attach_revocable()

bool dma_buf_attach_revocable

(

struct dma_buf_attachment *

attach

)

dma_buf_begin_cpu_access()

int dma_buf_begin_cpu_access	(	struct dma_buf *	dma_buf,
		enum dma_data_direction	dir
	)

dma_buf_detach()

void dma_buf_detach	(	struct dma_buf *	dmabuf,
		struct dma_buf_attachment *	attach
	)

dma_buf_dynamic_attach()

struct dma_buf_attachment * dma_buf_dynamic_attach	(	struct dma_buf *	dmabuf,
		struct device *	dev,
		const struct dma_buf_attach_ops *	importer_ops,
		void *	importer_priv
	)

dma_buf_end_cpu_access()

int dma_buf_end_cpu_access	(	struct dma_buf *	dma_buf,
		enum dma_data_direction	dir
	)

dma_buf_export()

struct dma_buf * dma_buf_export

(

const struct dma_buf_export_info *

exp_info

)

dma_buf_fd()

int dma_buf_fd	(	struct dma_buf *	dmabuf,
		int	flags
	)

dma_buf_get()

struct dma_buf * dma_buf_get

(

int

fd

)

dma_buf_invalidate_mappings()

void dma_buf_invalidate_mappings

(

struct dma_buf *

dma_buf

)

dma_buf_iter_begin()

struct dma_buf * dma_buf_iter_begin

(

void

)

dma_buf_iter_next()

struct dma_buf * dma_buf_iter_next

(

struct dma_buf *

dmbuf

)

dma_buf_map_attachment()

struct sg_table * dma_buf_map_attachment	(	struct dma_buf_attachment *	,
		enum	dma_data_direction
	)

dma_buf_map_attachment_unlocked()

struct sg_table * dma_buf_map_attachment_unlocked	(	struct dma_buf_attachment *	attach,
		enum dma_data_direction	direction
	)

dma_buf_mmap()

int dma_buf_mmap	(	struct dma_buf *	,
		struct vm_area_struct *	,
		unsigned long
	)

dma_buf_pin()

int dma_buf_pin

(

struct dma_buf_attachment *

attach

)

dma_buf_put()

void dma_buf_put

(

struct dma_buf *

dmabuf

)

dma_buf_unmap_attachment()

void dma_buf_unmap_attachment	(	struct dma_buf_attachment *	,
		struct sg_table *	,
		enum	dma_data_direction
	)

dma_buf_unmap_attachment_unlocked()

void dma_buf_unmap_attachment_unlocked	(	struct dma_buf_attachment *	attach,
		struct sg_table *	sg_table,
		enum dma_data_direction	direction
	)

dma_buf_unpin()

void dma_buf_unpin

(

struct dma_buf_attachment *

attach

)

dma_buf_vmap()

int dma_buf_vmap	(	struct dma_buf *	dmabuf,
		struct iosys_map *	map
	)

dma_buf_vmap_unlocked()

int dma_buf_vmap_unlocked	(	struct dma_buf *	dmabuf,
		struct iosys_map *	map
	)

dma_buf_vunmap()

void dma_buf_vunmap	(	struct dma_buf *	dmabuf,
		struct iosys_map *	map
	)

dma_buf_vunmap_unlocked()

void dma_buf_vunmap_unlocked	(	struct dma_buf *	dmabuf,
		struct iosys_map *	map
	)