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Merge tag 'dma-mapping-5.11' of git://git.infradead.org/users/hch/dma-mapping

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Pull dma-mapping updates from Christoph Hellwig:

 - support for a partial IOMMU bypass (Alexey Kardashevskiy)

 - add a DMA API benchmark (Barry Song)

 - misc fixes (Tiezhu Yang, tangjianqiang)

* tag 'dma-mapping-5.11' of git://git.infradead.org/users/hch/dma-mapping:
  selftests/dma: add test application for DMA_MAP_BENCHMARK
  dma-mapping: add benchmark support for streaming DMA APIs
  dma-contiguous: fix a typo error in a comment
  dma-pool: no need to check return value of debugfs_create functions
  powerpc/dma: Fallback to dma_ops when persistent memory present
  dma-mapping: Allow mixing bypass and mapped DMA operation
This commit is contained in:
Linus Torvalds
2020-12-22 13:19:43 -08:00
parent 4f06f21067 7679325702
commit 347d81b68b
14 changed files with 645 additions and 20 deletions
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14
include/linux/dma-map-ops.h
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@@ -317,6 +317,20 @@ static inline void arch_dma_mark_clean(phys_addr_t paddr, size_t size)
void *arch_dma_set_uncached(void *addr, size_t size);
void arch_dma_clear_uncached(void *addr, size_t size);
#ifdef CONFIG_ARCH_HAS_DMA_MAP_DIRECT
bool arch_dma_map_page_direct(struct device *dev, phys_addr_t addr);
bool arch_dma_unmap_page_direct(struct device *dev, dma_addr_t dma_handle);
bool arch_dma_map_sg_direct(struct device *dev, struct scatterlist *sg,
int nents);
bool arch_dma_unmap_sg_direct(struct device *dev, struct scatterlist *sg,
int nents);
#else
#define arch_dma_map_page_direct(d, a) (false)
#define arch_dma_unmap_page_direct(d, a) (false)
#define arch_dma_map_sg_direct(d, s, n) (false)
#define arch_dma_unmap_sg_direct(d, s, n) (false)
#endif
#ifdef CONFIG_ARCH_HAS_SETUP_DMA_OPS
void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size,
const struct iommu_ops *iommu, bool coherent);