drm_dma.c File Reference

#include <linux/export.h>
#include <drm/drmP.h>

Go to the source code of this file.

Functions
int	drm_dma_setup (struct drm_device *dev)
void	drm_dma_takedown (struct drm_device *dev)
void	drm_free_buffer (struct drm_device *dev, struct drm_buf *buf)
void	drm_core_reclaim_buffers (struct drm_device *dev, struct drm_file *file_priv)
	EXPORT_SYMBOL (drm_core_reclaim_buffers)

Detailed Description

DMA IOCTL and function support

Author

Rickard E. (Rik) Faith faith.nosp@m.@val.nosp@m.inux..nosp@m.com

Gareth Hughes garet.nosp@m.h@va.nosp@m.linux.nosp@m..com

Definition in file drm_dma.c.

Function Documentation

void drm_core_reclaim_buffers	(	struct drm_device *	dev,
		struct drm_file *	file_priv
	)

Reclaim the buffers.

Parameters

file_priv

DRM file private.

Frees each buffer associated with file_priv not already on the hardware.

Definition at line 132 of file drm_dma.c.

int drm_dma_setup

(

struct drm_device *

dev

)

Initialize the DMA data.

Parameters

dev	DRM device.

Returns

zero on success or a negative value on failure.

Allocate and initialize a drm_device_dma structure.

Definition at line 47 of file drm_dma.c.

void drm_dma_takedown

(

struct drm_device *

dev

)

Cleanup the DMA resources.

Parameters

dev	DRM device.

Free all pages associated with DMA buffers, the buffers and pages lists, and finally the drm_device::dma structure itself.

Definition at line 69 of file drm_dma.c.

void drm_free_buffer	(	struct drm_device *	dev,
		struct drm_buf *	buf
	)

Free a buffer.

Parameters

dev	DRM device.
buf	buffer to free.

Resets the fields of buf.

Definition at line 114 of file drm_dma.c.

EXPORT_SYMBOL

(

drm_core_reclaim_buffers

)