1bee76d7aSAriel Levkovich /* 2bee76d7aSAriel Levkovich * Copyright (c) 2018, Mellanox Technologies inc. All rights reserved. 3bee76d7aSAriel Levkovich * 4bee76d7aSAriel Levkovich * This software is available to you under a choice of one of two 5bee76d7aSAriel Levkovich * licenses. You may choose to be licensed under the terms of the GNU 6bee76d7aSAriel Levkovich * General Public License (GPL) Version 2, available from the file 7bee76d7aSAriel Levkovich * COPYING in the main directory of this source tree, or the 8bee76d7aSAriel Levkovich * OpenIB.org BSD license below: 9bee76d7aSAriel Levkovich * 10bee76d7aSAriel Levkovich * Redistribution and use in source and binary forms, with or 11bee76d7aSAriel Levkovich * without modification, are permitted provided that the following 12bee76d7aSAriel Levkovich * conditions are met: 13bee76d7aSAriel Levkovich * 14bee76d7aSAriel Levkovich * - Redistributions of source code must retain the above 15bee76d7aSAriel Levkovich * copyright notice, this list of conditions and the following 16bee76d7aSAriel Levkovich * disclaimer. 17bee76d7aSAriel Levkovich * 18bee76d7aSAriel Levkovich * - Redistributions in binary form must reproduce the above 19bee76d7aSAriel Levkovich * copyright notice, this list of conditions and the following 20bee76d7aSAriel Levkovich * disclaimer in the documentation and/or other materials 21bee76d7aSAriel Levkovich * provided with the distribution. 22bee76d7aSAriel Levkovich * 23bee76d7aSAriel Levkovich * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24bee76d7aSAriel Levkovich * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25bee76d7aSAriel Levkovich * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26bee76d7aSAriel Levkovich * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27bee76d7aSAriel Levkovich * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28bee76d7aSAriel Levkovich * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29bee76d7aSAriel Levkovich * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30bee76d7aSAriel Levkovich * SOFTWARE. 31bee76d7aSAriel Levkovich */ 32bee76d7aSAriel Levkovich 33bee76d7aSAriel Levkovich #include "uverbs.h" 34bee76d7aSAriel Levkovich #include <rdma/uverbs_std_types.h> 35bee76d7aSAriel Levkovich 36bee76d7aSAriel Levkovich static int uverbs_free_dm(struct ib_uobject *uobject, 37bee76d7aSAriel Levkovich enum rdma_remove_reason why) 38bee76d7aSAriel Levkovich { 39bee76d7aSAriel Levkovich struct ib_dm *dm = uobject->object; 401c77483eSYishai Hadas int ret; 41bee76d7aSAriel Levkovich 421c77483eSYishai Hadas ret = ib_destroy_usecnt(&dm->usecnt, why, uobject); 431c77483eSYishai Hadas if (ret) 441c77483eSYishai Hadas return ret; 45bee76d7aSAriel Levkovich 46bee76d7aSAriel Levkovich return dm->device->dealloc_dm(dm); 47bee76d7aSAriel Levkovich } 48bee76d7aSAriel Levkovich 49e83f0ecdSJason Gunthorpe static int 50e83f0ecdSJason Gunthorpe UVERBS_HANDLER(UVERBS_METHOD_DM_ALLOC)(struct ib_uverbs_file *file, 51bee76d7aSAriel Levkovich struct uverbs_attr_bundle *attrs) 52bee76d7aSAriel Levkovich { 53bee76d7aSAriel Levkovich struct ib_dm_alloc_attr attr = {}; 54e83f0ecdSJason Gunthorpe struct ib_uobject *uobj = 55e83f0ecdSJason Gunthorpe uverbs_attr_get(attrs, UVERBS_ATTR_ALLOC_DM_HANDLE) 56e83f0ecdSJason Gunthorpe ->obj_attr.uobject; 57e83f0ecdSJason Gunthorpe struct ib_device *ib_dev = uobj->context->device; 58bee76d7aSAriel Levkovich struct ib_dm *dm; 59bee76d7aSAriel Levkovich int ret; 60bee76d7aSAriel Levkovich 61bee76d7aSAriel Levkovich if (!ib_dev->alloc_dm) 62bee76d7aSAriel Levkovich return -EOPNOTSUPP; 63bee76d7aSAriel Levkovich 64bee76d7aSAriel Levkovich ret = uverbs_copy_from(&attr.length, attrs, 65bee76d7aSAriel Levkovich UVERBS_ATTR_ALLOC_DM_LENGTH); 66bee76d7aSAriel Levkovich if (ret) 67bee76d7aSAriel Levkovich return ret; 68bee76d7aSAriel Levkovich 69bee76d7aSAriel Levkovich ret = uverbs_copy_from(&attr.alignment, attrs, 70bee76d7aSAriel Levkovich UVERBS_ATTR_ALLOC_DM_ALIGNMENT); 71bee76d7aSAriel Levkovich if (ret) 72bee76d7aSAriel Levkovich return ret; 73bee76d7aSAriel Levkovich 7422fa27fbSJason Gunthorpe dm = ib_dev->alloc_dm(ib_dev, uobj->context, &attr, attrs); 75bee76d7aSAriel Levkovich if (IS_ERR(dm)) 76bee76d7aSAriel Levkovich return PTR_ERR(dm); 77bee76d7aSAriel Levkovich 78bee76d7aSAriel Levkovich dm->device = ib_dev; 79bee76d7aSAriel Levkovich dm->length = attr.length; 80bee76d7aSAriel Levkovich dm->uobject = uobj; 81bee76d7aSAriel Levkovich atomic_set(&dm->usecnt, 0); 82bee76d7aSAriel Levkovich 83bee76d7aSAriel Levkovich uobj->object = dm; 84bee76d7aSAriel Levkovich 85bee76d7aSAriel Levkovich return 0; 86bee76d7aSAriel Levkovich } 87bee76d7aSAriel Levkovich 889a119cd5SJason Gunthorpe DECLARE_UVERBS_NAMED_METHOD( 899a119cd5SJason Gunthorpe UVERBS_METHOD_DM_ALLOC, 909a119cd5SJason Gunthorpe UVERBS_ATTR_IDR(UVERBS_ATTR_ALLOC_DM_HANDLE, 919a119cd5SJason Gunthorpe UVERBS_OBJECT_DM, 92bee76d7aSAriel Levkovich UVERBS_ACCESS_NEW, 9383bb4442SJason Gunthorpe UA_MANDATORY), 949a119cd5SJason Gunthorpe UVERBS_ATTR_PTR_IN(UVERBS_ATTR_ALLOC_DM_LENGTH, 95bee76d7aSAriel Levkovich UVERBS_ATTR_TYPE(u64), 9683bb4442SJason Gunthorpe UA_MANDATORY), 979a119cd5SJason Gunthorpe UVERBS_ATTR_PTR_IN(UVERBS_ATTR_ALLOC_DM_ALIGNMENT, 98bee76d7aSAriel Levkovich UVERBS_ATTR_TYPE(u32), 9983bb4442SJason Gunthorpe UA_MANDATORY)); 100bee76d7aSAriel Levkovich 1019a119cd5SJason Gunthorpe DECLARE_UVERBS_NAMED_METHOD_DESTROY( 1029a119cd5SJason Gunthorpe UVERBS_METHOD_DM_FREE, 1039a119cd5SJason Gunthorpe UVERBS_ATTR_IDR(UVERBS_ATTR_FREE_DM_HANDLE, 104bee76d7aSAriel Levkovich UVERBS_OBJECT_DM, 105bee76d7aSAriel Levkovich UVERBS_ACCESS_DESTROY, 10683bb4442SJason Gunthorpe UA_MANDATORY)); 107bee76d7aSAriel Levkovich 108bee76d7aSAriel Levkovich DECLARE_UVERBS_NAMED_OBJECT(UVERBS_OBJECT_DM, 1099a119cd5SJason Gunthorpe UVERBS_TYPE_ALLOC_IDR(uverbs_free_dm), 110bee76d7aSAriel Levkovich &UVERBS_METHOD(UVERBS_METHOD_DM_ALLOC), 111bee76d7aSAriel Levkovich &UVERBS_METHOD(UVERBS_METHOD_DM_FREE)); 1120bd01f3dSJason Gunthorpe 1130bd01f3dSJason Gunthorpe const struct uapi_definition uverbs_def_obj_dm[] = { 1140bd01f3dSJason Gunthorpe UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_DM, 1150bd01f3dSJason Gunthorpe UAPI_DEF_OBJ_NEEDS_FN(dealloc_dm)), 1160bd01f3dSJason Gunthorpe {} 1170bd01f3dSJason Gunthorpe }; 118