linux/kernel/dma/debug.h
Christoph Hellwig a1fd09e8e6 dma-mapping: move dma-debug.h to kernel/dma/
Most of dma-debug.h is not required by anything outside of kernel/dma.
Move the four declarations needed by dma-mappin.h or dma-ops providers
into dma-mapping.h and dma-map-ops.h, and move the remainder of the
file to kernel/dma/debug.h.

Signed-off-by: Christoph Hellwig <hch@lst.de>
2020-10-06 07:07:05 +02:00

123 lines
3.4 KiB
C

/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2008 Advanced Micro Devices, Inc.
*
* Author: Joerg Roedel <joerg.roedel@amd.com>
*/
#ifndef _KERNEL_DMA_DEBUG_H
#define _KERNEL_DMA_DEBUG_H
#ifdef CONFIG_DMA_API_DEBUG
extern void debug_dma_map_page(struct device *dev, struct page *page,
size_t offset, size_t size,
int direction, dma_addr_t dma_addr);
extern void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
size_t size, int direction);
extern void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
int nents, int mapped_ents, int direction);
extern void debug_dma_unmap_sg(struct device *dev, struct scatterlist *sglist,
int nelems, int dir);
extern void debug_dma_alloc_coherent(struct device *dev, size_t size,
dma_addr_t dma_addr, void *virt);
extern void debug_dma_free_coherent(struct device *dev, size_t size,
void *virt, dma_addr_t addr);
extern void debug_dma_map_resource(struct device *dev, phys_addr_t addr,
size_t size, int direction,
dma_addr_t dma_addr);
extern void debug_dma_unmap_resource(struct device *dev, dma_addr_t dma_addr,
size_t size, int direction);
extern void debug_dma_sync_single_for_cpu(struct device *dev,
dma_addr_t dma_handle, size_t size,
int direction);
extern void debug_dma_sync_single_for_device(struct device *dev,
dma_addr_t dma_handle,
size_t size, int direction);
extern void debug_dma_sync_sg_for_cpu(struct device *dev,
struct scatterlist *sg,
int nelems, int direction);
extern void debug_dma_sync_sg_for_device(struct device *dev,
struct scatterlist *sg,
int nelems, int direction);
#else /* CONFIG_DMA_API_DEBUG */
static inline void debug_dma_map_page(struct device *dev, struct page *page,
size_t offset, size_t size,
int direction, dma_addr_t dma_addr)
{
}
static inline void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
size_t size, int direction)
{
}
static inline void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
int nents, int mapped_ents, int direction)
{
}
static inline void debug_dma_unmap_sg(struct device *dev,
struct scatterlist *sglist,
int nelems, int dir)
{
}
static inline void debug_dma_alloc_coherent(struct device *dev, size_t size,
dma_addr_t dma_addr, void *virt)
{
}
static inline void debug_dma_free_coherent(struct device *dev, size_t size,
void *virt, dma_addr_t addr)
{
}
static inline void debug_dma_map_resource(struct device *dev, phys_addr_t addr,
size_t size, int direction,
dma_addr_t dma_addr)
{
}
static inline void debug_dma_unmap_resource(struct device *dev,
dma_addr_t dma_addr, size_t size,
int direction)
{
}
static inline void debug_dma_sync_single_for_cpu(struct device *dev,
dma_addr_t dma_handle,
size_t size, int direction)
{
}
static inline void debug_dma_sync_single_for_device(struct device *dev,
dma_addr_t dma_handle,
size_t size, int direction)
{
}
static inline void debug_dma_sync_sg_for_cpu(struct device *dev,
struct scatterlist *sg,
int nelems, int direction)
{
}
static inline void debug_dma_sync_sg_for_device(struct device *dev,
struct scatterlist *sg,
int nelems, int direction)
{
}
#endif /* CONFIG_DMA_API_DEBUG */
#endif /* _KERNEL_DMA_DEBUG_H */