mirror of
git://git.yoctoproject.org/linux-yocto.git
synced 2025-10-22 23:13:01 +02:00
c6eb8d2d63
[ Upstream commit 7e2368a21741e2db542330b32aa6fdd8908e7cff ]
As discussed in [1], there is no need to enforce dma mapping check on
noncoherent allocations, a simple test on the returned CPU address is
good enough.
Add a new pair of debug helpers and use them for noncoherent alloc/free
to fix this issue.
Fixes: efa70f2fdc ("dma-mapping: add a new dma_alloc_pages API")
Link: https://lore.kernel.org/all/ff6c1fe6-820f-4e58-8395-df06aa91706c@oss.qualcomm.com # 1
Signed-off-by: Baochen Qiang <baochen.qiang@oss.qualcomm.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/20250828-dma-debug-fix-noncoherent-dma-check-v1-1-76e9be0dd7fc@oss.qualcomm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
151 lines
4.2 KiB
C
151 lines
4.2 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,
|
|
unsigned long attrs);
|
|
|
|
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,
|
|
unsigned long attrs);
|
|
|
|
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,
|
|
unsigned long attrs);
|
|
|
|
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,
|
|
unsigned long attrs);
|
|
|
|
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);
|
|
extern void debug_dma_alloc_pages(struct device *dev, struct page *page,
|
|
size_t size, int direction,
|
|
dma_addr_t dma_addr,
|
|
unsigned long attrs);
|
|
extern void debug_dma_free_pages(struct device *dev, struct page *page,
|
|
size_t size, int direction,
|
|
dma_addr_t dma_addr);
|
|
#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,
|
|
unsigned long attrs)
|
|
{
|
|
}
|
|
|
|
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,
|
|
unsigned long attrs)
|
|
{
|
|
}
|
|
|
|
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,
|
|
unsigned long attrs)
|
|
{
|
|
}
|
|
|
|
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,
|
|
unsigned long attrs)
|
|
{
|
|
}
|
|
|
|
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)
|
|
{
|
|
}
|
|
|
|
static inline void debug_dma_alloc_pages(struct device *dev, struct page *page,
|
|
size_t size, int direction,
|
|
dma_addr_t dma_addr,
|
|
unsigned long attrs)
|
|
{
|
|
}
|
|
|
|
static inline void debug_dma_free_pages(struct device *dev, struct page *page,
|
|
size_t size, int direction,
|
|
dma_addr_t dma_addr)
|
|
{
|
|
}
|
|
#endif /* CONFIG_DMA_API_DEBUG */
|
|
#endif /* _KERNEL_DMA_DEBUG_H */
|