diff options
Diffstat (limited to 'drivers/infiniband/hw/mlx5/dm.c')
| -rw-r--r-- | drivers/infiniband/hw/mlx5/dm.c | 47 |
1 files changed, 46 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/mlx5/dm.c b/drivers/infiniband/hw/mlx5/dm.c index bec0489428f8..235aad6beacb 100644 --- a/drivers/infiniband/hw/mlx5/dm.c +++ b/drivers/infiniband/hw/mlx5/dm.c @@ -293,6 +293,7 @@ static struct ib_dm *handle_alloc_dm_memic(struct ib_ucontext *ctx, kref_init(&dm->ref); xa_init(&dm->ops); mutex_init(&dm->ops_xa_lock); + dm->req_length = attr->length; err = mlx5_cmd_alloc_memic(dm_db, &dm->base.dev_addr, dm->base.size, attr->alignment); @@ -473,6 +474,38 @@ static int mlx5_ib_dealloc_dm(struct ib_dm *ibdm, } } +static int UVERBS_HANDLER(MLX5_IB_METHOD_DM_QUERY)( + struct uverbs_attr_bundle *attrs) +{ + struct ib_dm *ibdm = + uverbs_attr_get_obj(attrs, MLX5_IB_ATTR_QUERY_DM_REQ_HANDLE); + struct mlx5_ib_dm *dm = to_mdm(ibdm); + struct mlx5_ib_dm_memic *memic; + u64 start_offset; + u16 page_idx; + int err; + + if (dm->type != MLX5_IB_UAPI_DM_TYPE_MEMIC) + return -EOPNOTSUPP; + + memic = to_memic(ibdm); + page_idx = memic->mentry.rdma_entry.start_pgoff & 0xFFFF; + err = uverbs_copy_to(attrs, MLX5_IB_ATTR_QUERY_DM_RESP_PAGE_INDEX, + &page_idx, sizeof(page_idx)); + if (err) + return err; + + start_offset = memic->base.dev_addr & ~PAGE_MASK; + err = uverbs_copy_to(attrs, MLX5_IB_ATTR_QUERY_DM_RESP_START_OFFSET, + &start_offset, sizeof(start_offset)); + if (err) + return err; + + return uverbs_copy_to(attrs, MLX5_IB_ATTR_QUERY_DM_RESP_LENGTH, + &memic->req_length, + sizeof(memic->req_length)); +} + void mlx5_ib_dm_mmap_free(struct mlx5_ib_dev *dev, struct mlx5_user_mmap_entry *mentry) { @@ -498,6 +531,17 @@ void mlx5_ib_dm_mmap_free(struct mlx5_ib_dev *dev, } } +DECLARE_UVERBS_NAMED_METHOD( + MLX5_IB_METHOD_DM_QUERY, + UVERBS_ATTR_IDR(MLX5_IB_ATTR_QUERY_DM_REQ_HANDLE, UVERBS_OBJECT_DM, + UVERBS_ACCESS_READ, UA_MANDATORY), + UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_QUERY_DM_RESP_START_OFFSET, + UVERBS_ATTR_TYPE(u64), UA_MANDATORY), + UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_QUERY_DM_RESP_PAGE_INDEX, + UVERBS_ATTR_TYPE(u16), UA_MANDATORY), + UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_QUERY_DM_RESP_LENGTH, + UVERBS_ATTR_TYPE(u64), UA_MANDATORY)); + ADD_UVERBS_ATTRIBUTES_SIMPLE( mlx5_ib_dm, UVERBS_OBJECT_DM, UVERBS_METHOD_DM_ALLOC, UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_ALLOC_DM_RESP_START_OFFSET, @@ -524,7 +568,8 @@ DECLARE_UVERBS_NAMED_METHOD( UA_OPTIONAL)); DECLARE_UVERBS_GLOBAL_METHODS(UVERBS_OBJECT_DM, - &UVERBS_METHOD(MLX5_IB_METHOD_DM_MAP_OP_ADDR)); + &UVERBS_METHOD(MLX5_IB_METHOD_DM_MAP_OP_ADDR), + &UVERBS_METHOD(MLX5_IB_METHOD_DM_QUERY)); const struct uapi_definition mlx5_ib_dm_defs[] = { UAPI_DEF_CHAIN_OBJ_TREE(UVERBS_OBJECT_DM, &mlx5_ib_dm), |