2 * Copyright (c) 2018, Mellanox Technologies inc. All rights reserved.
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6 * General Public License (GPL) Version 2, available from the file
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8 * OpenIB.org BSD license below:
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11 * without modification, are permitted provided that the following
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29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
33 #include "rdma_core.h"
35 #include <rdma/uverbs_std_types.h>
37 static int uverbs_free_dm(struct ib_uobject *uobject,
38 enum rdma_remove_reason why,
39 struct uverbs_attr_bundle *attrs)
41 struct ib_dm *dm = uobject->object;
43 if (atomic_read(&dm->usecnt))
46 return dm->device->ops.dealloc_dm(dm, attrs);
49 static int UVERBS_HANDLER(UVERBS_METHOD_DM_ALLOC)(
50 struct uverbs_attr_bundle *attrs)
52 struct ib_dm_alloc_attr attr = {};
53 struct ib_uobject *uobj =
54 uverbs_attr_get(attrs, UVERBS_ATTR_ALLOC_DM_HANDLE)
56 struct ib_device *ib_dev = attrs->context->device;
60 if (!ib_dev->ops.alloc_dm)
63 ret = uverbs_copy_from(&attr.length, attrs,
64 UVERBS_ATTR_ALLOC_DM_LENGTH);
68 ret = uverbs_copy_from(&attr.alignment, attrs,
69 UVERBS_ATTR_ALLOC_DM_ALIGNMENT);
73 dm = ib_dev->ops.alloc_dm(ib_dev, attrs->context, &attr, attrs);
78 dm->length = attr.length;
80 atomic_set(&dm->usecnt, 0);
87 DECLARE_UVERBS_NAMED_METHOD(
88 UVERBS_METHOD_DM_ALLOC,
89 UVERBS_ATTR_IDR(UVERBS_ATTR_ALLOC_DM_HANDLE,
93 UVERBS_ATTR_PTR_IN(UVERBS_ATTR_ALLOC_DM_LENGTH,
94 UVERBS_ATTR_TYPE(u64),
96 UVERBS_ATTR_PTR_IN(UVERBS_ATTR_ALLOC_DM_ALIGNMENT,
97 UVERBS_ATTR_TYPE(u32),
100 DECLARE_UVERBS_NAMED_METHOD_DESTROY(
101 UVERBS_METHOD_DM_FREE,
102 UVERBS_ATTR_IDR(UVERBS_ATTR_FREE_DM_HANDLE,
104 UVERBS_ACCESS_DESTROY,
107 DECLARE_UVERBS_NAMED_OBJECT(UVERBS_OBJECT_DM,
108 UVERBS_TYPE_ALLOC_IDR(uverbs_free_dm),
109 &UVERBS_METHOD(UVERBS_METHOD_DM_ALLOC),
110 &UVERBS_METHOD(UVERBS_METHOD_DM_FREE));
112 const struct uapi_definition uverbs_def_obj_dm[] = {
113 UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_DM,
114 UAPI_DEF_OBJ_NEEDS_FN(dealloc_dm)),