dma-debug.c File Reference

#include <linux/scatterlist.h>
#include <linux/dma-mapping.h>
#include <linux/stacktrace.h>
#include <linux/dma-debug.h>
#include <linux/spinlock.h>
#include <linux/debugfs.h>
#include <linux/uaccess.h>
#include <linux/export.h>
#include <linux/device.h>
#include <linux/types.h>
#include <linux/sched.h>
#include <linux/ctype.h>
#include <linux/list.h>
#include <linux/slab.h>
#include <asm/sections.h>

Go to the source code of this file.

Data Structures
struct	dma_debug_entry
struct	hash_bucket

Macros
#define	HASH_SIZE   1024ULL
#define	HASH_FN_SHIFT   13
#define	HASH_FN_MASK   (HASH_SIZE - 1)
#define	DMA_DEBUG_STACKTRACE_ENTRIES   5
#define	NAME_MAX_LEN   64
#define	err_printk(dev, entry, format, arg...)

Typedefs
typedef bool(*	match_fn )(struct dma_debug_entry *, struct dma_debug_entry *)

Enumerations
enum	{ dma_debug_single, dma_debug_page, dma_debug_sg, dma_debug_coherent }

Functions
void	debug_dma_dump_mappings (struct device *dev)
	EXPORT_SYMBOL (debug_dma_dump_mappings)
int	dma_debug_resize_entries (u32 num_entries)
	EXPORT_SYMBOL (dma_debug_resize_entries)
void	dma_debug_add_bus (struct bus_type *bus)
void	dma_debug_init (u32 num_entries)
	__setup ("dma_debug=", dma_debug_cmdline)
void	debug_dma_map_page (struct device *dev, struct page *page, size_t offset, size_t size, int direction, dma_addr_t dma_addr, bool map_single)
	EXPORT_SYMBOL (debug_dma_map_page)
void	debug_dma_unmap_page (struct device *dev, dma_addr_t addr, size_t size, int direction, bool map_single)
	EXPORT_SYMBOL (debug_dma_unmap_page)
void	debug_dma_map_sg (struct device *dev, struct scatterlist *sg, int nents, int mapped_ents, int direction)
	EXPORT_SYMBOL (debug_dma_map_sg)
void	debug_dma_unmap_sg (struct device *dev, struct scatterlist *sglist, int nelems, int dir)
	EXPORT_SYMBOL (debug_dma_unmap_sg)
void	debug_dma_alloc_coherent (struct device *dev, size_t size, dma_addr_t dma_addr, void *virt)
	EXPORT_SYMBOL (debug_dma_alloc_coherent)
void	debug_dma_free_coherent (struct device *dev, size_t size, void *virt, dma_addr_t addr)
	EXPORT_SYMBOL (debug_dma_free_coherent)
void	debug_dma_sync_single_for_cpu (struct device *dev, dma_addr_t dma_handle, size_t size, int direction)
	EXPORT_SYMBOL (debug_dma_sync_single_for_cpu)
void	debug_dma_sync_single_for_device (struct device *dev, dma_addr_t dma_handle, size_t size, int direction)
	EXPORT_SYMBOL (debug_dma_sync_single_for_device)
void	debug_dma_sync_single_range_for_cpu (struct device *dev, dma_addr_t dma_handle, unsigned long offset, size_t size, int direction)
	EXPORT_SYMBOL (debug_dma_sync_single_range_for_cpu)
void	debug_dma_sync_single_range_for_device (struct device *dev, dma_addr_t dma_handle, unsigned long offset, size_t size, int direction)
	EXPORT_SYMBOL (debug_dma_sync_single_range_for_device)
void	debug_dma_sync_sg_for_cpu (struct device *dev, struct scatterlist *sg, int nelems, int direction)
	EXPORT_SYMBOL (debug_dma_sync_sg_for_cpu)
void	debug_dma_sync_sg_for_device (struct device *dev, struct scatterlist *sg, int nelems, int direction)
	EXPORT_SYMBOL (debug_dma_sync_sg_for_device)

Variables
struct hash_bucket	____cacheline_aligned_in_smp

Macro Definition Documentation

#define DMA_DEBUG_STACKTRACE_ENTRIES   5

Definition at line 48 of file dma-debug.c.

#define err_printk	(		dev,
			entry,
			format,
			arg...
	)

Value:

do {            \
        error_count += 1;                   \
        if (driver_filter(dev) &&               \
            (show_all_errors || show_num_errors > 0)) {     \
            WARN(1, "%s %s: " format,           \
                 dev ? dev_driver_string(dev) : "NULL", \
                 dev ? dev_name(dev) : "NULL", ## arg); \
            dump_entry_trace(entry);            \
        }                           \
        if (!show_all_errors && show_num_errors > 0)        \
            show_num_errors -= 1;               \
    } while (0);

Definition at line 187 of file dma-debug.c.

#define HASH_FN_MASK   (HASH_SIZE - 1)

Definition at line 39 of file dma-debug.c.

#define HASH_FN_SHIFT   13

Definition at line 38 of file dma-debug.c.

#define HASH_SIZE   1024ULL

Definition at line 37 of file dma-debug.c.

#define NAME_MAX_LEN   64

Definition at line 110 of file dma-debug.c.

Typedef Documentation

typedef bool(* match_fn)(struct dma_debug_entry *, struct dma_debug_entry *)

Definition at line 66 of file dma-debug.c.

Enumeration Type Documentation

anonymous enum

Enumerator:

dma_debug_single
dma_debug_page
dma_debug_sg
dma_debug_coherent

Definition at line 41 of file dma-debug.c.

Function Documentation

__setup

(

)

void debug_dma_alloc_coherent	(	struct device *	dev,
		size_t	size,
		dma_addr_t	dma_addr,
		void *	virt
	)

Definition at line 1154 of file dma-debug.c.

void debug_dma_dump_mappings

(

struct device *

dev

)

Definition at line 365 of file dma-debug.c.

void debug_dma_free_coherent	(	struct device *	dev,
		size_t	size,
		void *	virt,
		dma_addr_t	addr
	)

Definition at line 1180 of file dma-debug.c.

void debug_dma_map_page	(	struct device *	dev,
		struct page *	page,
		size_t	offset,
		size_t	size,
		int	direction,
		dma_addr_t	dma_addr,
		bool	map_single
	)

Definition at line 1011 of file dma-debug.c.

void debug_dma_map_sg	(	struct device *	dev,
		struct scatterlist *	sg,
		int	nents,
		int	mapped_ents,
		int	direction
	)

Definition at line 1069 of file dma-debug.c.

void debug_dma_sync_sg_for_cpu	(	struct device *	dev,
		struct scatterlist *	sg,
		int	nelems,
		int	direction
	)

Definition at line 1280 of file dma-debug.c.

void debug_dma_sync_sg_for_device	(	struct device *	dev,
		struct scatterlist *	sg,
		int	nelems,
		int	direction
	)

Definition at line 1312 of file dma-debug.c.

void debug_dma_sync_single_for_cpu	(	struct device *	dev,
		dma_addr_t	dma_handle,
		size_t	size,
		int	direction
	)

Definition at line 1199 of file dma-debug.c.

void debug_dma_sync_single_for_device	(	struct device *	dev,
		dma_addr_t	dma_handle,
		size_t	size,
		int	direction
	)

Definition at line 1218 of file dma-debug.c.

void debug_dma_sync_single_range_for_cpu	(	struct device *	dev,
		dma_addr_t	dma_handle,
		unsigned long	offset,
		size_t	size,
		int	direction
	)

Definition at line 1238 of file dma-debug.c.

void debug_dma_sync_single_range_for_device	(	struct device *	dev,
		dma_addr_t	dma_handle,
		unsigned long	offset,
		size_t	size,
		int	direction
	)

Definition at line 1259 of file dma-debug.c.

void debug_dma_unmap_page	(	struct device *	dev,
		dma_addr_t	addr,
		size_t	size,
		int	direction,
		bool	map_single
	)

Definition at line 1048 of file dma-debug.c.

void debug_dma_unmap_sg	(	struct device *	dev,
		struct scatterlist *	sglist,
		int	nelems,
		int	dir
	)

Definition at line 1122 of file dma-debug.c.

void dma_debug_add_bus

(

struct bus_type *

bus

)

Definition at line 755 of file dma-debug.c.

void dma_debug_init

(

u32

num_entries

)

Definition at line 776 of file dma-debug.c.

int dma_debug_resize_entries

(

u32

num_entries

)

Definition at line 468 of file dma-debug.c.

EXPORT_SYMBOL

(

debug_dma_dump_mappings

)

EXPORT_SYMBOL

(

dma_debug_resize_entries

)

EXPORT_SYMBOL

(

debug_dma_map_page

)

EXPORT_SYMBOL

(

debug_dma_unmap_page

)

EXPORT_SYMBOL

(

debug_dma_map_sg

)

EXPORT_SYMBOL

(

debug_dma_unmap_sg

)

EXPORT_SYMBOL

(

debug_dma_alloc_coherent

)

EXPORT_SYMBOL

(

debug_dma_free_coherent

)

EXPORT_SYMBOL

(

debug_dma_sync_single_for_cpu

)

EXPORT_SYMBOL

(

debug_dma_sync_single_for_device

)

EXPORT_SYMBOL

(

debug_dma_sync_single_range_for_cpu

)

EXPORT_SYMBOL

(

debug_dma_sync_single_range_for_device

)

EXPORT_SYMBOL

(

debug_dma_sync_sg_for_cpu

)

EXPORT_SYMBOL

(

debug_dma_sync_sg_for_device

)

Variable Documentation

struct hash_bucket ____cacheline_aligned_in_smp