swiotlb.c File Reference

#include <linux/cache.h>
#include <linux/dma-mapping.h>
#include <linux/mm.h>
#include <linux/export.h>
#include <linux/spinlock.h>
#include <linux/string.h>
#include <linux/swiotlb.h>
#include <linux/pfn.h>
#include <linux/types.h>
#include <linux/ctype.h>
#include <linux/highmem.h>
#include <linux/gfp.h>
#include <asm/io.h>
#include <asm/dma.h>
#include <asm/scatterlist.h>
#include <linux/init.h>
#include <linux/bootmem.h>
#include <linux/iommu-helper.h>

Go to the source code of this file.

Macros
#define	OFFSET(val, align)
#define	SLABS_PER_PAGE   (1 << (PAGE_SHIFT - IO_TLB_SHIFT))
#define	IO_TLB_MIN_SLABS   ((1<<20) >> IO_TLB_SHIFT)

Functions
	__setup ("swiotlb=", setup_io_tlb_npages)
unsigned long	swiotlb_nr_tbl (void)
	EXPORT_SYMBOL_GPL (swiotlb_nr_tbl)
void	swiotlb_print_info (void)
void __init	swiotlb_init_with_tbl (char *tlb, unsigned long nslabs, int verbose)
void __init	swiotlb_init (int verbose)
int	swiotlb_late_init_with_default_size (size_t default_size)
int	swiotlb_late_init_with_tbl (char *tlb, unsigned long nslabs)
void __init	swiotlb_free (void)
void	swiotlb_bounce (phys_addr_t phys, char *dma_addr, size_t size, enum dma_data_direction dir)
	EXPORT_SYMBOL_GPL (swiotlb_bounce)
void *	swiotlb_tbl_map_single (struct device *hwdev, dma_addr_t tbl_dma_addr, phys_addr_t phys, size_t size, enum dma_data_direction dir)
	EXPORT_SYMBOL_GPL (swiotlb_tbl_map_single)
void	swiotlb_tbl_unmap_single (struct device *hwdev, char *dma_addr, size_t size, enum dma_data_direction dir)
	EXPORT_SYMBOL_GPL (swiotlb_tbl_unmap_single)
void	swiotlb_tbl_sync_single (struct device *hwdev, char *dma_addr, size_t size, enum dma_data_direction dir, enum dma_sync_target target)
	EXPORT_SYMBOL_GPL (swiotlb_tbl_sync_single)
void *	swiotlb_alloc_coherent (struct device *hwdev, size_t size, dma_addr_t *dma_handle, gfp_t flags)
	EXPORT_SYMBOL (swiotlb_alloc_coherent)
void	swiotlb_free_coherent (struct device *hwdev, size_t size, void *vaddr, dma_addr_t dev_addr)
	EXPORT_SYMBOL (swiotlb_free_coherent)
dma_addr_t	swiotlb_map_page (struct device *dev, struct page *page, unsigned long offset, size_t size, enum dma_data_direction dir, struct dma_attrs *attrs)
	EXPORT_SYMBOL_GPL (swiotlb_map_page)
void	swiotlb_unmap_page (struct device *hwdev, dma_addr_t dev_addr, size_t size, enum dma_data_direction dir, struct dma_attrs *attrs)
	EXPORT_SYMBOL_GPL (swiotlb_unmap_page)
void	swiotlb_sync_single_for_cpu (struct device *hwdev, dma_addr_t dev_addr, size_t size, enum dma_data_direction dir)
	EXPORT_SYMBOL (swiotlb_sync_single_for_cpu)
void	swiotlb_sync_single_for_device (struct device *hwdev, dma_addr_t dev_addr, size_t size, enum dma_data_direction dir)
	EXPORT_SYMBOL (swiotlb_sync_single_for_device)
int	swiotlb_map_sg_attrs (struct device *hwdev, struct scatterlist *sgl, int nelems, enum dma_data_direction dir, struct dma_attrs *attrs)
	EXPORT_SYMBOL (swiotlb_map_sg_attrs)
int	swiotlb_map_sg (struct device *hwdev, struct scatterlist *sgl, int nelems, enum dma_data_direction dir)
	EXPORT_SYMBOL (swiotlb_map_sg)
void	swiotlb_unmap_sg_attrs (struct device *hwdev, struct scatterlist *sgl, int nelems, enum dma_data_direction dir, struct dma_attrs *attrs)
	EXPORT_SYMBOL (swiotlb_unmap_sg_attrs)
void	swiotlb_unmap_sg (struct device *hwdev, struct scatterlist *sgl, int nelems, enum dma_data_direction dir)
	EXPORT_SYMBOL (swiotlb_unmap_sg)
void	swiotlb_sync_sg_for_cpu (struct device *hwdev, struct scatterlist *sg, int nelems, enum dma_data_direction dir)
	EXPORT_SYMBOL (swiotlb_sync_sg_for_cpu)
void	swiotlb_sync_sg_for_device (struct device *hwdev, struct scatterlist *sg, int nelems, enum dma_data_direction dir)
	EXPORT_SYMBOL (swiotlb_sync_sg_for_device)
int	swiotlb_dma_mapping_error (struct device *hwdev, dma_addr_t dma_addr)
	EXPORT_SYMBOL (swiotlb_dma_mapping_error)
int	swiotlb_dma_supported (struct device *hwdev, u64 mask)
	EXPORT_SYMBOL (swiotlb_dma_supported)

Variables
int	swiotlb_force

Macro Definition Documentation

#define IO_TLB_MIN_SLABS   ((1<<20) >> IO_TLB_SHIFT)

Definition at line 51 of file swiotlb.c.

#define OFFSET	(		val,
			align
	)

Value:

((unsigned long)    \
                       ( (val) & ( (align) - 1)))

Definition at line 41 of file swiotlb.c.

#define SLABS_PER_PAGE   (1 << (PAGE_SHIFT - IO_TLB_SHIFT))

Definition at line 44 of file swiotlb.c.

Function Documentation

__setup

(

)

EXPORT_SYMBOL

(

swiotlb_alloc_coherent

)

EXPORT_SYMBOL

(

swiotlb_free_coherent

)

EXPORT_SYMBOL

(

swiotlb_sync_single_for_cpu

)

EXPORT_SYMBOL

(

swiotlb_sync_single_for_device

)

EXPORT_SYMBOL

(

swiotlb_map_sg_attrs

)

EXPORT_SYMBOL

(

swiotlb_map_sg

)

EXPORT_SYMBOL

(

swiotlb_unmap_sg_attrs

)

EXPORT_SYMBOL

(

swiotlb_unmap_sg

)

EXPORT_SYMBOL

(

swiotlb_sync_sg_for_cpu

)

EXPORT_SYMBOL

(

swiotlb_sync_sg_for_device

)

EXPORT_SYMBOL

(

swiotlb_dma_mapping_error

)

EXPORT_SYMBOL

(

swiotlb_dma_supported

)

EXPORT_SYMBOL_GPL

(

swiotlb_nr_tbl

)

EXPORT_SYMBOL_GPL

(

swiotlb_bounce

)

EXPORT_SYMBOL_GPL

(

swiotlb_tbl_map_single

)

EXPORT_SYMBOL_GPL

(

swiotlb_tbl_unmap_single

)

EXPORT_SYMBOL_GPL

(

swiotlb_tbl_sync_single

)

EXPORT_SYMBOL_GPL

(

swiotlb_map_page

)

EXPORT_SYMBOL_GPL

(

swiotlb_unmap_page

)

void* swiotlb_alloc_coherent	(	struct device *	hwdev,
		size_t	size,
		dma_addr_t *	dma_handle,
		gfp_t	flags
	)

Definition at line 580 of file swiotlb.c.

void swiotlb_bounce	(	phys_addr_t	phys,
		char *	dma_addr,
		size_t	size,
		enum dma_data_direction	dir
	)

Definition at line 349 of file swiotlb.c.

int swiotlb_dma_mapping_error	(	struct device *	hwdev,
		dma_addr_t	dma_addr
	)

Definition at line 926 of file swiotlb.c.

int swiotlb_dma_supported	(	struct device *	hwdev,
		u64	mask
	)

Definition at line 939 of file swiotlb.c.

void __init swiotlb_free

(

void

)

Definition at line 313 of file swiotlb.c.

void swiotlb_free_coherent	(	struct device *	hwdev,
		size_t	size,
		void *	vaddr,
		dma_addr_t	dev_addr
	)

Definition at line 629 of file swiotlb.c.

void __init swiotlb_init

(

int

verbose

)

Definition at line 196 of file swiotlb.c.

void __init swiotlb_init_with_tbl	(	char *	tlb,
		unsigned long	nslabs,
		int	verbose
	)

Definition at line 138 of file swiotlb.c.

int swiotlb_late_init_with_default_size

(

size_t

default_size

)

Definition at line 207 of file swiotlb.c.

int swiotlb_late_init_with_tbl	(	char *	tlb,
		unsigned long	nslabs
	)

Definition at line 249 of file swiotlb.c.

dma_addr_t swiotlb_map_page	(	struct device *	dev,
		struct page *	page,
		unsigned long	offset,
		size_t	size,
		enum dma_data_direction	dir,
		struct dma_attrs *	attrs
	)

Definition at line 675 of file swiotlb.c.

int swiotlb_map_sg	(	struct device *	hwdev,
		struct scatterlist *	sgl,
		int	nelems,
		enum dma_data_direction	dir
	)

Definition at line 855 of file swiotlb.c.

int swiotlb_map_sg_attrs	(	struct device *	hwdev,
		struct scatterlist *	sgl,
		int	nelems,
		enum dma_data_direction	dir,
		struct dma_attrs *	attrs
	)

Definition at line 820 of file swiotlb.c.

unsigned long swiotlb_nr_tbl

(

void

)

Definition at line 113 of file swiotlb.c.

void swiotlb_print_info

(

void

)

Definition at line 125 of file swiotlb.c.

void swiotlb_sync_sg_for_cpu	(	struct device *	hwdev,
		struct scatterlist *	sg,
		int	nelems,
		enum dma_data_direction	dir
	)

Definition at line 910 of file swiotlb.c.

void swiotlb_sync_sg_for_device	(	struct device *	hwdev,
		struct scatterlist *	sg,
		int	nelems,
		enum dma_data_direction	dir
	)

Definition at line 918 of file swiotlb.c.

void swiotlb_sync_single_for_cpu	(	struct device *	hwdev,
		dma_addr_t	dev_addr,
		size_t	size,
		enum dma_data_direction	dir
	)

Definition at line 788 of file swiotlb.c.

void swiotlb_sync_single_for_device	(	struct device *	hwdev,
		dma_addr_t	dev_addr,
		size_t	size,
		enum dma_data_direction	dir
	)

Definition at line 796 of file swiotlb.c.

void* swiotlb_tbl_map_single	(	struct device *	hwdev,
		dma_addr_t	tbl_dma_addr,
		phys_addr_t	phys,
		size_t	size,
		enum dma_data_direction	dir
	)

Definition at line 387 of file swiotlb.c.

void swiotlb_tbl_sync_single	(	struct device *	hwdev,
		char *	dma_addr,
		size_t	size,
		enum dma_data_direction	dir,
		enum dma_sync_target	target
	)

Definition at line 551 of file swiotlb.c.

void swiotlb_tbl_unmap_single	(	struct device *	hwdev,
		char *	dma_addr,
		size_t	size,
		enum dma_data_direction	dir
	)

Definition at line 509 of file swiotlb.c.

void swiotlb_unmap_page	(	struct device *	hwdev,
		dma_addr_t	dev_addr,
		size_t	size,
		enum dma_data_direction	dir,
		struct dma_attrs *	attrs
	)

Definition at line 748 of file swiotlb.c.

void swiotlb_unmap_sg	(	struct device *	hwdev,
		struct scatterlist *	sgl,
		int	nelems,
		enum dma_data_direction	dir
	)

Definition at line 882 of file swiotlb.c.

void swiotlb_unmap_sg_attrs	(	struct device *	hwdev,
		struct scatterlist *	sgl,
		int	nelems,
		enum dma_data_direction	dir,
		struct dma_attrs *	attrs
	)

Definition at line 867 of file swiotlb.c.

Variable Documentation

int swiotlb_force

Definition at line 53 of file swiotlb.c.