diff options
Diffstat (limited to 'drivers/infiniband/hw/mlx5/mlx5_ib.h')
| -rw-r--r-- | drivers/infiniband/hw/mlx5/mlx5_ib.h | 45 |
1 files changed, 37 insertions, 8 deletions
diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h index 184abd5f493c..3856ee3854f6 100644 --- a/drivers/infiniband/hw/mlx5/mlx5_ib.h +++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h @@ -1231,7 +1231,7 @@ int mlx5_mr_cache_init(struct mlx5_ib_dev *dev); int mlx5_mr_cache_cleanup(struct mlx5_ib_dev *dev); struct mlx5_ib_mr *mlx5_mr_cache_alloc(struct mlx5_ib_dev *dev, - unsigned int entry); + unsigned int entry, int access_flags); void mlx5_mr_cache_free(struct mlx5_ib_dev *dev, struct mlx5_ib_mr *mr); int mlx5_mr_cache_invalidate(struct mlx5_ib_mr *mr); @@ -1444,25 +1444,54 @@ int bfregn_to_uar_index(struct mlx5_ib_dev *dev, struct mlx5_bfreg_info *bfregi, u32 bfregn, bool dyn_bfreg); -static inline bool mlx5_ib_can_use_umr(struct mlx5_ib_dev *dev, - bool do_modify_atomic, int access_flags) +static inline bool mlx5_ib_can_load_pas_with_umr(struct mlx5_ib_dev *dev, + size_t length) { + /* + * umr_check_mkey_mask() rejects MLX5_MKEY_MASK_PAGE_SIZE which is + * always set if MLX5_IB_SEND_UMR_UPDATE_TRANSLATION (aka + * MLX5_IB_UPD_XLT_ADDR and MLX5_IB_UPD_XLT_ENABLE) is set. Thus, a mkey + * can never be enabled without this capability. Simplify this weird + * quirky hardware by just saying it can't use PAS lists with UMR at + * all. + */ if (MLX5_CAP_GEN(dev->mdev, umr_modify_entity_size_disabled)) return false; - if (do_modify_atomic && + /* + * length is the size of the MR in bytes when mlx5_ib_update_xlt() is + * used. + */ + if (!MLX5_CAP_GEN(dev->mdev, umr_extended_translation_offset) && + length >= MLX5_MAX_UMR_PAGES * PAGE_SIZE) + return false; + return true; +} + +/* + * true if an existing MR can be reconfigured to new access_flags using UMR. + * Older HW cannot use UMR to update certain elements of the MKC. See + * umr_check_mkey_mask(), get_umr_update_access_mask() and umr_check_mkey_mask() + */ +static inline bool mlx5_ib_can_reconfig_with_umr(struct mlx5_ib_dev *dev, + unsigned int current_access_flags, + unsigned int target_access_flags) +{ + unsigned int diffs = current_access_flags ^ target_access_flags; + + if ((diffs & IB_ACCESS_REMOTE_ATOMIC) && MLX5_CAP_GEN(dev->mdev, atomic) && MLX5_CAP_GEN(dev->mdev, umr_modify_atomic_disabled)) return false; - if (access_flags & IB_ACCESS_RELAXED_ORDERING && + if ((diffs & IB_ACCESS_RELAXED_ORDERING) && MLX5_CAP_GEN(dev->mdev, relaxed_ordering_write) && !MLX5_CAP_GEN(dev->mdev, relaxed_ordering_write_umr)) return false; - if (access_flags & IB_ACCESS_RELAXED_ORDERING && - MLX5_CAP_GEN(dev->mdev, relaxed_ordering_read) && - !MLX5_CAP_GEN(dev->mdev, relaxed_ordering_read_umr)) + if ((diffs & IB_ACCESS_RELAXED_ORDERING) && + MLX5_CAP_GEN(dev->mdev, relaxed_ordering_read) && + !MLX5_CAP_GEN(dev->mdev, relaxed_ordering_read_umr)) return false; return true; |