diff options
| author |   Nicolas Saenz Julienne <nsaenzjulienne@suse.de> | 2020-07-14 14:39:25 +0200 |
|---|---|---|
| committer |   Christoph Hellwig <hch@lst.de> | 2020-07-14 15:42:24 +0200 |
| commit | 567f6a6eba0c09e5f502e0290e57651befa8aacb (patch) | |
| tree | ffc1568d007cbdfb6740ecac29c11d0e1d3f1d20 /include/linux/dma-direct.h | |
| parent | Merge tag 'iommu-fixes-v5.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu (diff) | |
| download | linux-dev-567f6a6eba0c09e5f502e0290e57651befa8aacb.tar.xz linux-dev-567f6a6eba0c09e5f502e0290e57651befa8aacb.zip | |
dma-direct: provide function to check physical memory area validity
dma_coherent_ok() checks if a physical memory area fits a device's DMA
constraints.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'include/linux/dma-direct.h')
| -rw-r--r-- | include/linux/dma-direct.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/dma-direct.h b/include/linux/dma-direct.h index 5184735a0fe8..ab2e20cba951 100644 --- a/include/linux/dma-direct.h +++ b/include/linux/dma-direct.h @@ -69,6 +69,7 @@ static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size, u64 dma_direct_get_required_mask(struct device *dev); gfp_t dma_direct_optimal_gfp_mask(struct device *dev, u64 dma_mask, u64 *phys_mask); +bool dma_coherent_ok(struct device *dev, phys_addr_t phys, size_t size); void *dma_direct_alloc(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t gfp, unsigned long attrs); void dma_direct_free(struct device *dev, size_t size, void *cpu_addr, |