diff options
Diffstat (limited to 'drivers/infiniband/hw/mlx4/mlx4_ib.h')
| -rw-r--r-- | drivers/infiniband/hw/mlx4/mlx4_ib.h | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/mlx4/mlx4_ib.h b/drivers/infiniband/hw/mlx4/mlx4_ib.h index b52bceff7d97..f53b1846594c 100644 --- a/drivers/infiniband/hw/mlx4/mlx4_ib.h +++ b/drivers/infiniband/hw/mlx4/mlx4_ib.h @@ -667,6 +667,9 @@ struct mlx4_uverbs_ex_query_device { __u32 reserved; }; +/* 4k - 4G */ +#define MLX4_PAGE_SIZE_SUPPORTED ((unsigned long)GENMASK_ULL(31, 12)) + static inline struct mlx4_ib_dev *to_mdev(struct ib_device *ibdev) { return container_of(ibdev, struct mlx4_ib_dev, ib_dev); @@ -936,8 +939,19 @@ mlx4_ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *wq_ind_table) { return 0; } -int mlx4_ib_umem_calc_optimal_mtt_size(struct ib_umem *umem, u64 start_va, - int *num_of_mtts); +static inline int mlx4_ib_umem_calc_optimal_mtt_size(struct ib_umem *umem, + u64 start, + int *num_of_mtts) +{ + unsigned long pg_sz; + + pg_sz = ib_umem_find_best_pgsz(umem, MLX4_PAGE_SIZE_SUPPORTED, start); + if (!pg_sz) + return -EOPNOTSUPP; + + *num_of_mtts = ib_umem_num_dma_blocks(umem, pg_sz); + return order_base_2(pg_sz); +} int mlx4_ib_cm_init(void); void mlx4_ib_cm_destroy(void); |