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- /*
- * 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;
- int ret;
- ret = ib_destroy_usecnt(&dm->usecnt, why, uobject);
- if (ret)
- return ret;
- 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)),
- {}
- };
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