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| author | Leon Romanovsky <leonro@nvidia.com> | 2024-07-24 21:04:49 +0300 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2024-08-22 07:18:11 +0300 |
| commit | b5c58b2fdc427e7958412ecb2de2804a1f7c1572 (patch) | |
| tree | 6990c73ac5918df08b138af03ad83519368e0221 /include/linux/dma-map-ops.h | |
| parent | f69e342eec008e1bab772d3963c3dd9979293e13 (diff) | |
| download | linux-b5c58b2fdc427e7958412ecb2de2804a1f7c1572.tar.xz | |
dma-mapping: direct calls for dma-iommu
Directly call into dma-iommu just like we have been doing for dma-direct
for a while. This avoids the indirect call overhead for IOMMU ops and
removes the need to have DMA ops entirely for many common configurations.
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'include/linux/dma-map-ops.h')
| -rw-r--r-- | include/linux/dma-map-ops.h | 13 |
1 files changed, 0 insertions, 13 deletions
diff --git a/include/linux/dma-map-ops.h b/include/linux/dma-map-ops.h index 02a1c825896b..077b15c93bb8 100644 --- a/include/linux/dma-map-ops.h +++ b/include/linux/dma-map-ops.h @@ -13,20 +13,7 @@ struct cma; struct iommu_ops; -/* - * Values for struct dma_map_ops.flags: - * - * DMA_F_PCI_P2PDMA_SUPPORTED: Indicates the dma_map_ops implementation can - * handle PCI P2PDMA pages in the map_sg/unmap_sg operation. - * DMA_F_CAN_SKIP_SYNC: DMA sync operations can be skipped if the device is - * coherent and it's not an SWIOTLB buffer. - */ -#define DMA_F_PCI_P2PDMA_SUPPORTED (1 << 0) -#define DMA_F_CAN_SKIP_SYNC (1 << 1) - struct dma_map_ops { - unsigned int flags; - void *(*alloc)(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t gfp, unsigned long attrs); |