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Diffstat (limited to '')
-rw-r--r-- | drivers/infiniband/core/uverbs_std_types_dm.c | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/drivers/infiniband/core/uverbs_std_types_dm.c b/drivers/infiniband/core/uverbs_std_types_dm.c new file mode 100644 index 000000000..98c522cf8 --- /dev/null +++ b/drivers/infiniband/core/uverbs_std_types_dm.c @@ -0,0 +1,116 @@ +/* + * Copyright (c) 2018, Mellanox Technologies inc. All rights reserved. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the + * OpenIB.org BSD license below: + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#include "rdma_core.h" +#include "uverbs.h" +#include <rdma/uverbs_std_types.h> + +static int uverbs_free_dm(struct ib_uobject *uobject, + enum rdma_remove_reason why, + struct uverbs_attr_bundle *attrs) +{ + struct ib_dm *dm = uobject->object; + + if (atomic_read(&dm->usecnt)) + return -EBUSY; + + return dm->device->ops.dealloc_dm(dm, attrs); +} + +static int UVERBS_HANDLER(UVERBS_METHOD_DM_ALLOC)( + struct uverbs_attr_bundle *attrs) +{ + struct ib_dm_alloc_attr attr = {}; + struct ib_uobject *uobj = + uverbs_attr_get(attrs, UVERBS_ATTR_ALLOC_DM_HANDLE) + ->obj_attr.uobject; + struct ib_device *ib_dev = attrs->context->device; + struct ib_dm *dm; + int ret; + + if (!ib_dev->ops.alloc_dm) + return -EOPNOTSUPP; + + ret = uverbs_copy_from(&attr.length, attrs, + UVERBS_ATTR_ALLOC_DM_LENGTH); + if (ret) + return ret; + + ret = uverbs_copy_from(&attr.alignment, attrs, + UVERBS_ATTR_ALLOC_DM_ALIGNMENT); + if (ret) + return ret; + + dm = ib_dev->ops.alloc_dm(ib_dev, attrs->context, &attr, attrs); + if (IS_ERR(dm)) + return PTR_ERR(dm); + + dm->device = ib_dev; + dm->length = attr.length; + dm->uobject = uobj; + atomic_set(&dm->usecnt, 0); + + uobj->object = dm; + + return 0; +} + +DECLARE_UVERBS_NAMED_METHOD( + UVERBS_METHOD_DM_ALLOC, + UVERBS_ATTR_IDR(UVERBS_ATTR_ALLOC_DM_HANDLE, + UVERBS_OBJECT_DM, + UVERBS_ACCESS_NEW, + UA_MANDATORY), + UVERBS_ATTR_PTR_IN(UVERBS_ATTR_ALLOC_DM_LENGTH, + UVERBS_ATTR_TYPE(u64), + UA_MANDATORY), + UVERBS_ATTR_PTR_IN(UVERBS_ATTR_ALLOC_DM_ALIGNMENT, + UVERBS_ATTR_TYPE(u32), + UA_MANDATORY)); + +DECLARE_UVERBS_NAMED_METHOD_DESTROY( + UVERBS_METHOD_DM_FREE, + UVERBS_ATTR_IDR(UVERBS_ATTR_FREE_DM_HANDLE, + UVERBS_OBJECT_DM, + UVERBS_ACCESS_DESTROY, + UA_MANDATORY)); + +DECLARE_UVERBS_NAMED_OBJECT(UVERBS_OBJECT_DM, + UVERBS_TYPE_ALLOC_IDR(uverbs_free_dm), + &UVERBS_METHOD(UVERBS_METHOD_DM_ALLOC), + &UVERBS_METHOD(UVERBS_METHOD_DM_FREE)); + +const struct uapi_definition uverbs_def_obj_dm[] = { + UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_DM, + UAPI_DEF_OBJ_NEEDS_FN(dealloc_dm)), + {} +}; |