dma-mapping.c File Reference

#include <linux/module.h>
#include <linux/mm.h>
#include <linux/gfp.h>
#include <linux/errno.h>
#include <linux/list.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/dma-mapping.h>
#include <linux/dma-contiguous.h>
#include <linux/highmem.h>
#include <linux/memblock.h>
#include <linux/slab.h>
#include <linux/iommu.h>
#include <linux/io.h>
#include <linux/vmalloc.h>
#include <linux/sizes.h>
#include <asm/memory.h>
#include <asm/highmem.h>
#include <asm/cacheflush.h>
#include <asm/tlbflush.h>
#include <asm/mach/arch.h>
#include <asm/dma-iommu.h>
#include <asm/mach/map.h>
#include <asm/system_info.h>
#include <asm/dma-contiguous.h>
#include "mm.h"

Go to the source code of this file.

Macros
#define	nommu()   1
#define	__get_dma_pgprot(attrs, prot)   __pgprot(0)
#define	__alloc_remap_buffer(dev, size, gfp, prot, ret, c)   NULL
#define	__alloc_from_pool(size, ret_page)   NULL
#define	__alloc_from_contiguous(dev, size, prot, ret)   NULL
#define	__free_from_pool(cpu_addr, size)   0
#define	__free_from_contiguous(dev, page, size)   do { } while (0)
#define	__dma_free_remap(cpu_addr, size)   do { } while (0)
#define	PREALLOC_DMA_DEBUG_ENTRIES   4096

Functions
	EXPORT_SYMBOL (arm_dma_ops)
	EXPORT_SYMBOL (arm_coherent_dma_ops)
void *	arm_dma_alloc (struct device *dev, size_t size, dma_addr_t *handle, gfp_t gfp, struct dma_attrs *attrs)
int	arm_dma_mmap (struct device *dev, struct vm_area_struct *vma, void *cpu_addr, dma_addr_t dma_addr, size_t size, struct dma_attrs *attrs)
void	arm_dma_free (struct device *dev, size_t size, void *cpu_addr, dma_addr_t handle, struct dma_attrs *attrs)
int	arm_dma_get_sgtable (struct device *dev, struct sg_table *sgt, void *cpu_addr, dma_addr_t handle, size_t size, struct dma_attrs *attrs)
int	arm_dma_map_sg (struct device *dev, struct scatterlist *sg, int nents, enum dma_data_direction dir, struct dma_attrs *attrs)
void	arm_dma_unmap_sg (struct device *dev, struct scatterlist *sg, int nents, enum dma_data_direction dir, struct dma_attrs *attrs)
void	arm_dma_sync_sg_for_cpu (struct device *dev, struct scatterlist *sg, int nents, enum dma_data_direction dir)
void	arm_dma_sync_sg_for_device (struct device *dev, struct scatterlist *sg, int nents, enum dma_data_direction dir)
int	dma_supported (struct device *dev, u64 mask)
	EXPORT_SYMBOL (dma_supported)
	fs_initcall (dma_debug_do_init)

Variables
struct dma_map_ops	arm_dma_ops
struct dma_map_ops	arm_coherent_dma_ops

Macro Definition Documentation

#define __alloc_from_contiguous	(		dev,
			size,
			prot,
			ret
	)		NULL

Definition at line 588 of file dma-mapping.c.

#define __alloc_from_pool	(		size,
			ret_page
	)		NULL

Definition at line 587 of file dma-mapping.c.

#define __alloc_remap_buffer	(		dev,
			size,
			gfp,
			prot,
			ret,
			c
	)		NULL

Definition at line 586 of file dma-mapping.c.

#define __dma_free_remap	(		cpu_addr,
			size
	)		do { } while (0)

Definition at line 591 of file dma-mapping.c.

#define __free_from_contiguous	(		dev,
			page,
			size
	)		do { } while (0)

Definition at line 590 of file dma-mapping.c.

#define __free_from_pool	(		cpu_addr,
			size
	)		0

Definition at line 589 of file dma-mapping.c.

#define __get_dma_pgprot	(		attrs,
			prot
	)		__pgprot(0)

Definition at line 585 of file dma-mapping.c.

#define nommu

(

)

1

Definition at line 583 of file dma-mapping.c.

#define PREALLOC_DMA_DEBUG_ENTRIES   4096

Definition at line 984 of file dma-mapping.c.

Function Documentation

void* arm_dma_alloc	(	struct device *	dev,
		size_t	size,
		dma_addr_t *	handle,
		gfp_t	gfp,
		struct dma_attrs *	attrs
	)

Definition at line 662 of file dma-mapping.c.

void arm_dma_free	(	struct device *	dev,
		size_t	size,
		void *	cpu_addr,
		dma_addr_t	handle,
		struct dma_attrs *	attrs
	)

Definition at line 748 of file dma-mapping.c.

int arm_dma_get_sgtable	(	struct device *	dev,
		struct sg_table *	sgt,
		void *	cpu_addr,
		dma_addr_t	handle,
		size_t	size,
		struct dma_attrs *	attrs
	)

Definition at line 760 of file dma-mapping.c.

int arm_dma_map_sg	(	struct device *	dev,
		struct scatterlist *	sg,
		int	nents,
		enum dma_data_direction	dir,
		struct dma_attrs *	attrs
	)

Definition at line 876 of file dma-mapping.c.

int arm_dma_mmap	(	struct device *	dev,
		struct vm_area_struct *	vma,
		void *	cpu_addr,
		dma_addr_t	dma_addr,
		size_t	size,
		struct dma_attrs *	attrs
	)

Definition at line 691 of file dma-mapping.c.

void arm_dma_sync_sg_for_cpu	(	struct device *	dev,
		struct scatterlist *	sg,
		int	nents,
		enum dma_data_direction	dir
	)

Definition at line 929 of file dma-mapping.c.

void arm_dma_sync_sg_for_device	(	struct device *	dev,
		struct scatterlist *	sg,
		int	nents,
		enum dma_data_direction	dir
	)

Definition at line 948 of file dma-mapping.c.

void arm_dma_unmap_sg	(	struct device *	dev,
		struct scatterlist *	sg,
		int	nents,
		enum dma_data_direction	dir,
		struct dma_attrs *	attrs
	)

Definition at line 910 of file dma-mapping.c.

int dma_supported	(	struct device *	dev,
		u64	mask
	)

Definition at line 966 of file dma-mapping.c.

EXPORT_SYMBOL

(

arm_dma_ops

)

EXPORT_SYMBOL

(

arm_coherent_dma_ops

)

EXPORT_SYMBOL

(

dma_supported

)

fs_initcall

(

dma_debug_do_init

)

Variable Documentation

struct dma_map_ops arm_coherent_dma_ops

Initial value:

= {
    .alloc          = arm_coherent_dma_alloc,
    .free           = arm_coherent_dma_free,
    .mmap           = arm_dma_mmap,
    .get_sgtable        = arm_dma_get_sgtable,
    .map_page       = arm_coherent_dma_map_page,
    .map_sg         = arm_dma_map_sg,
    .set_dma_mask       = arm_dma_set_mask,
}

Definition at line 151 of file dma-mapping.c.

struct dma_map_ops arm_dma_ops

Initial value:

= {
    .alloc          = arm_dma_alloc,
    .free           = arm_dma_free,
    .mmap           = arm_dma_mmap,
    .get_sgtable        = arm_dma_get_sgtable,
    .map_page       = arm_dma_map_page,
    .unmap_page     = arm_dma_unmap_page,
    .map_sg         = arm_dma_map_sg,
    .unmap_sg       = arm_dma_unmap_sg,
    .sync_single_for_cpu    = arm_dma_sync_single_for_cpu,
    .sync_single_for_device = arm_dma_sync_single_for_device,
    .sync_sg_for_cpu    = arm_dma_sync_sg_for_cpu,
    .sync_sg_for_device = arm_dma_sync_sg_for_device,
    .set_dma_mask       = arm_dma_set_mask,
}

Definition at line 129 of file dma-mapping.c.