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| author | Leon Romanovsky <leonro@nvidia.com> | 2025-09-09 16:27:34 +0300 |
|---|---|---|
| committer | Marek Szyprowski <m.szyprowski@samsung.com> | 2025-09-12 00:18:20 +0200 |
| commit | f9374de14c0e8c36cfb7c68618c07cb155e6f8e6 (patch) | |
| tree | dfa567ebebde40dfcb6d9a01bae55e8d44d4c362 /rust/kernel | |
| parent | 513559f73700966ded094b090c3ecc6dff877ef9 (diff) | |
iommu/dma: implement DMA_ATTR_MMIO for iommu_dma_(un)map_phys()
Make iommu_dma_map_phys() and iommu_dma_unmap_phys() respect
DMA_ATTR_MMIO.
DMA_ATTR_MMIO makes the functions behave the same as
iommu_dma_(un)map_resource():
- No swiotlb is possible
- No cache flushing is done (ATTR_MMIO should not be cached memory)
- prot for iommu_map() has IOMMU_MMIO not IOMMU_CACHE
This is preparation for replacing iommu_dma_map_resource() callers
with iommu_dma_map_phys(DMA_ATTR_MMIO) and removing
iommu_dma_(un)map_resource().
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/acc255bee358fec9c7da6b2a5904ee50abcd09f1.1757423202.git.leonro@nvidia.com
Diffstat (limited to 'rust/kernel')
0 files changed, 0 insertions, 0 deletions