swiotlb-xen.c File Reference

#include <linux/bootmem.h>
#include <linux/dma-mapping.h>
#include <linux/export.h>
#include <xen/swiotlb-xen.h>
#include <xen/page.h>
#include <xen/xen-ops.h>
#include <xen/hvc-console.h>

Go to the source code of this file.

Macros
#define	SLABS_PER_PAGE   (1 << (PAGE_SHIFT - IO_TLB_SHIFT))
#define	IO_TLB_MIN_SLABS   ((1<<20) >> IO_TLB_SHIFT)

Enumerations
enum	xen_swiotlb_err { XEN_SWIOTLB_UNKNOWN = 0, XEN_SWIOTLB_ENOMEM, XEN_SWIOTLB_EFIXUP }

Functions
int __ref	xen_swiotlb_init (int verbose, bool early)
void *	xen_swiotlb_alloc_coherent (struct device *hwdev, size_t size, dma_addr_t *dma_handle, gfp_t flags, struct dma_attrs *attrs)
	EXPORT_SYMBOL_GPL (xen_swiotlb_alloc_coherent)
void	xen_swiotlb_free_coherent (struct device *hwdev, size_t size, void *vaddr, dma_addr_t dev_addr, struct dma_attrs *attrs)
	EXPORT_SYMBOL_GPL (xen_swiotlb_free_coherent)
dma_addr_t	xen_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 (xen_swiotlb_map_page)
void	xen_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 (xen_swiotlb_unmap_page)
void	xen_swiotlb_sync_single_for_cpu (struct device *hwdev, dma_addr_t dev_addr, size_t size, enum dma_data_direction dir)
	EXPORT_SYMBOL_GPL (xen_swiotlb_sync_single_for_cpu)
void	xen_swiotlb_sync_single_for_device (struct device *hwdev, dma_addr_t dev_addr, size_t size, enum dma_data_direction dir)
	EXPORT_SYMBOL_GPL (xen_swiotlb_sync_single_for_device)
int	xen_swiotlb_map_sg_attrs (struct device *hwdev, struct scatterlist *sgl, int nelems, enum dma_data_direction dir, struct dma_attrs *attrs)
	EXPORT_SYMBOL_GPL (xen_swiotlb_map_sg_attrs)
void	xen_swiotlb_unmap_sg_attrs (struct device *hwdev, struct scatterlist *sgl, int nelems, enum dma_data_direction dir, struct dma_attrs *attrs)
	EXPORT_SYMBOL_GPL (xen_swiotlb_unmap_sg_attrs)
void	xen_swiotlb_sync_sg_for_cpu (struct device *hwdev, struct scatterlist *sg, int nelems, enum dma_data_direction dir)
	EXPORT_SYMBOL_GPL (xen_swiotlb_sync_sg_for_cpu)
void	xen_swiotlb_sync_sg_for_device (struct device *hwdev, struct scatterlist *sg, int nelems, enum dma_data_direction dir)
	EXPORT_SYMBOL_GPL (xen_swiotlb_sync_sg_for_device)
int	xen_swiotlb_dma_mapping_error (struct device *hwdev, dma_addr_t dma_addr)
	EXPORT_SYMBOL_GPL (xen_swiotlb_dma_mapping_error)
int	xen_swiotlb_dma_supported (struct device *hwdev, u64 mask)
	EXPORT_SYMBOL_GPL (xen_swiotlb_dma_supported)

Macro Definition Documentation

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

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

Enumeration Type Documentation

enum xen_swiotlb_err

Enumerator:

XEN_SWIOTLB_UNKNOWN
XEN_SWIOTLB_ENOMEM
XEN_SWIOTLB_EFIXUP

Definition at line 158 of file swiotlb-xen.c.

Function Documentation

EXPORT_SYMBOL_GPL

(

xen_swiotlb_alloc_coherent

)

EXPORT_SYMBOL_GPL

(

xen_swiotlb_free_coherent

)

EXPORT_SYMBOL_GPL

(

xen_swiotlb_map_page

)

EXPORT_SYMBOL_GPL

(

xen_swiotlb_unmap_page

)

EXPORT_SYMBOL_GPL

(

xen_swiotlb_sync_single_for_cpu

)

EXPORT_SYMBOL_GPL

(

xen_swiotlb_sync_single_for_device

)

EXPORT_SYMBOL_GPL

(

xen_swiotlb_map_sg_attrs

)

EXPORT_SYMBOL_GPL

(

xen_swiotlb_unmap_sg_attrs

)

EXPORT_SYMBOL_GPL

(

xen_swiotlb_sync_sg_for_cpu

)

EXPORT_SYMBOL_GPL

(

xen_swiotlb_sync_sg_for_device

)

EXPORT_SYMBOL_GPL

(

xen_swiotlb_dma_mapping_error

)

EXPORT_SYMBOL_GPL

(

xen_swiotlb_dma_supported

)

void* xen_swiotlb_alloc_coherent	(	struct device *	hwdev,
		size_t	size,
		dma_addr_t *	dma_handle,
		gfp_t	flags,
		struct dma_attrs *	attrs
	)

Definition at line 255 of file swiotlb-xen.c.

int xen_swiotlb_dma_mapping_error	(	struct device *	hwdev,
		dma_addr_t	dma_addr
	)

Definition at line 575 of file swiotlb-xen.c.

int xen_swiotlb_dma_supported	(	struct device *	hwdev,
		u64	mask
	)

Definition at line 588 of file swiotlb-xen.c.

void xen_swiotlb_free_coherent	(	struct device *	hwdev,
		size_t	size,
		void *	vaddr,
		dma_addr_t	dev_addr,
		struct dma_attrs *	attrs
	)

Definition at line 305 of file swiotlb-xen.c.

int __ref xen_swiotlb_init	(	int	verbose,
		bool	early
	)

Definition at line 179 of file swiotlb-xen.c.

dma_addr_t xen_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 336 of file swiotlb-xen.c.

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

Definition at line 481 of file swiotlb-xen.c.

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

Definition at line 559 of file swiotlb-xen.c.

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

Definition at line 567 of file swiotlb-xen.c.

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

Definition at line 449 of file swiotlb-xen.c.

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

Definition at line 457 of file swiotlb-xen.c.

void xen_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 408 of file swiotlb-xen.c.

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

Definition at line 523 of file swiotlb-xen.c.