diff options
Diffstat (limited to 'include/rdma')
| -rw-r--r-- | include/rdma/ib_umem.h | 11 | ||||
| -rw-r--r-- | include/rdma/ib_verbs.h | 28 |
2 files changed, 33 insertions, 6 deletions
diff --git a/include/rdma/ib_umem.h b/include/rdma/ib_umem.h index 676c57f5ca80..5ae9dff74dac 100644 --- a/include/rdma/ib_umem.h +++ b/include/rdma/ib_umem.h @@ -26,9 +26,7 @@ struct ib_umem { u32 is_odp : 1; u32 is_dmabuf : 1; struct work_struct work; - struct sg_table sg_head; - int nmap; - unsigned int sg_nents; + struct sg_append_table sgt_append; }; struct ib_umem_dmabuf { @@ -56,7 +54,7 @@ static inline int ib_umem_offset(struct ib_umem *umem) static inline unsigned long ib_umem_dma_offset(struct ib_umem *umem, unsigned long pgsz) { - return (sg_dma_address(umem->sg_head.sgl) + ib_umem_offset(umem)) & + return (sg_dma_address(umem->sgt_append.sgt.sgl) + ib_umem_offset(umem)) & (pgsz - 1); } @@ -77,7 +75,8 @@ static inline void __rdma_umem_block_iter_start(struct ib_block_iter *biter, struct ib_umem *umem, unsigned long pgsz) { - __rdma_block_iter_start(biter, umem->sg_head.sgl, umem->nmap, pgsz); + __rdma_block_iter_start(biter, umem->sgt_append.sgt.sgl, + umem->sgt_append.sgt.nents, pgsz); } /** @@ -128,7 +127,7 @@ static inline unsigned long ib_umem_find_best_pgoff(struct ib_umem *umem, unsigned long pgsz_bitmap, u64 pgoff_bitmask) { - struct scatterlist *sg = umem->sg_head.sgl; + struct scatterlist *sg = umem->sgt_append.sgt.sgl; dma_addr_t dma_addr; dma_addr = sg_dma_address(sg) + (umem->address & ~PAGE_MASK); diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index aa7806335cba..4b50d9a3018a 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -4086,6 +4086,34 @@ static inline void ib_dma_unmap_sg_attrs(struct ib_device *dev, } /** + * ib_dma_map_sgtable_attrs - Map a scatter/gather table to DMA addresses + * @dev: The device for which the DMA addresses are to be created + * @sg: The sg_table object describing the buffer + * @direction: The direction of the DMA + * @attrs: Optional DMA attributes for the map operation + */ +static inline int ib_dma_map_sgtable_attrs(struct ib_device *dev, + struct sg_table *sgt, + enum dma_data_direction direction, + unsigned long dma_attrs) +{ + if (ib_uses_virt_dma(dev)) { + ib_dma_virt_map_sg(dev, sgt->sgl, sgt->orig_nents); + return 0; + } + return dma_map_sgtable(dev->dma_device, sgt, direction, dma_attrs); +} + +static inline void ib_dma_unmap_sgtable_attrs(struct ib_device *dev, + struct sg_table *sgt, + enum dma_data_direction direction, + unsigned long dma_attrs) +{ + if (!ib_uses_virt_dma(dev)) + dma_unmap_sgtable(dev->dma_device, sgt, direction, dma_attrs); +} + +/** * ib_dma_map_sg - Map a scatter/gather list to DMA addresses * @dev: The device for which the DMA addresses are to be created * @sg: The array of scatter/gather entries |