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bc38a6ab RD |
1 | /* |
2 | * Copyright (c) 2005 Topspin Communications. All rights reserved. | |
33b9b3ee | 3 | * Copyright (c) 2005, 2006 Cisco Systems. All rights reserved. |
2a1d9b7f RD |
4 | * Copyright (c) 2005 Mellanox Technologies. All rights reserved. |
5 | * Copyright (c) 2005 Voltaire, Inc. All rights reserved. | |
67cdb40c | 6 | * Copyright (c) 2005 PathScale, Inc. All rights reserved. |
bc38a6ab RD |
7 | * |
8 | * This software is available to you under a choice of one of two | |
9 | * licenses. You may choose to be licensed under the terms of the GNU | |
10 | * General Public License (GPL) Version 2, available from the file | |
11 | * COPYING in the main directory of this source tree, or the | |
12 | * OpenIB.org BSD license below: | |
13 | * | |
14 | * Redistribution and use in source and binary forms, with or | |
15 | * without modification, are permitted provided that the following | |
16 | * conditions are met: | |
17 | * | |
18 | * - Redistributions of source code must retain the above | |
19 | * copyright notice, this list of conditions and the following | |
20 | * disclaimer. | |
21 | * | |
22 | * - Redistributions in binary form must reproduce the above | |
23 | * copyright notice, this list of conditions and the following | |
24 | * disclaimer in the documentation and/or other materials | |
25 | * provided with the distribution. | |
26 | * | |
27 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
28 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
29 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
30 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
31 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
32 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
33 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
34 | * SOFTWARE. | |
35 | * | |
36 | * $Id: uverbs.h 2559 2005-06-06 19:43:16Z roland $ | |
37 | */ | |
38 | ||
39 | #ifndef UVERBS_H | |
40 | #define UVERBS_H | |
41 | ||
bc38a6ab RD |
42 | #include <linux/kref.h> |
43 | #include <linux/idr.h> | |
95ed644f | 44 | #include <linux/mutex.h> |
fd60ae40 | 45 | #include <linux/completion.h> |
bc38a6ab | 46 | |
a4d61e84 | 47 | #include <rdma/ib_verbs.h> |
f7c6a7b5 | 48 | #include <rdma/ib_umem.h> |
a4d61e84 | 49 | #include <rdma/ib_user_verbs.h> |
bc38a6ab | 50 | |
70a30e16 RD |
51 | /* |
52 | * Our lifetime rules for these structs are the following: | |
53 | * | |
54 | * struct ib_uverbs_device: One reference is held by the module and | |
55 | * released in ib_uverbs_remove_one(). Another reference is taken by | |
56 | * ib_uverbs_open() each time the character special file is opened, | |
57 | * and released in ib_uverbs_release_file() when the file is released. | |
58 | * | |
59 | * struct ib_uverbs_file: One reference is held by the VFS and | |
60 | * released when the file is closed. Another reference is taken when | |
61 | * an asynchronous event queue file is created and released when the | |
62 | * event file is closed. | |
63 | * | |
64 | * struct ib_uverbs_event_file: One reference is held by the VFS and | |
65 | * released when the file is closed. For asynchronous event files, | |
66 | * another reference is held by the corresponding main context file | |
67 | * and released when that file is closed. For completion event files, | |
68 | * a reference is taken when a CQ is created that uses the file, and | |
69 | * released when the CQ is destroyed. | |
70 | */ | |
71 | ||
bc38a6ab | 72 | struct ib_uverbs_device { |
70a30e16 | 73 | struct kref ref; |
fd60ae40 | 74 | struct completion comp; |
bc38a6ab | 75 | int devnum; |
f4e91eb4 TJ |
76 | struct cdev *cdev; |
77 | struct device *dev; | |
bc38a6ab | 78 | struct ib_device *ib_dev; |
6b73597e | 79 | int num_comp_vectors; |
bc38a6ab RD |
80 | }; |
81 | ||
82 | struct ib_uverbs_event_file { | |
83 | struct kref ref; | |
84 | struct ib_uverbs_file *uverbs_file; | |
85 | spinlock_t lock; | |
bc38a6ab | 86 | wait_queue_head_t poll_wait; |
abdf119b | 87 | struct fasync_struct *async_queue; |
bc38a6ab | 88 | struct list_head event_list; |
1ae5c187 RD |
89 | int is_async; |
90 | int is_closed; | |
bc38a6ab RD |
91 | }; |
92 | ||
93 | struct ib_uverbs_file { | |
94 | struct kref ref; | |
95ed644f | 95 | struct mutex mutex; |
bc38a6ab RD |
96 | struct ib_uverbs_device *device; |
97 | struct ib_ucontext *ucontext; | |
98 | struct ib_event_handler event_handler; | |
6b73597e | 99 | struct ib_uverbs_event_file *async_file; |
bc38a6ab RD |
100 | }; |
101 | ||
63aaf647 RD |
102 | struct ib_uverbs_event { |
103 | union { | |
104 | struct ib_uverbs_async_event_desc async; | |
105 | struct ib_uverbs_comp_event_desc comp; | |
106 | } desc; | |
bc38a6ab | 107 | struct list_head list; |
63aaf647 RD |
108 | struct list_head obj_list; |
109 | u32 *counter; | |
bc38a6ab RD |
110 | }; |
111 | ||
f4e40156 JM |
112 | struct ib_uverbs_mcast_entry { |
113 | struct list_head list; | |
114 | union ib_gid gid; | |
115 | u16 lid; | |
116 | }; | |
117 | ||
63aaf647 RD |
118 | struct ib_uevent_object { |
119 | struct ib_uobject uobject; | |
120 | struct list_head event_list; | |
121 | u32 events_reported; | |
bc38a6ab RD |
122 | }; |
123 | ||
f4e40156 JM |
124 | struct ib_uqp_object { |
125 | struct ib_uevent_object uevent; | |
126 | struct list_head mcast_list; | |
127 | }; | |
128 | ||
63aaf647 RD |
129 | struct ib_ucq_object { |
130 | struct ib_uobject uobject; | |
7162a3e0 | 131 | struct ib_uverbs_file *uverbs_file; |
63aaf647 RD |
132 | struct list_head comp_list; |
133 | struct list_head async_list; | |
134 | u32 comp_events_reported; | |
135 | u32 async_events_reported; | |
bc38a6ab RD |
136 | }; |
137 | ||
9ead190b | 138 | extern spinlock_t ib_uverbs_idr_lock; |
bc38a6ab RD |
139 | extern struct idr ib_uverbs_pd_idr; |
140 | extern struct idr ib_uverbs_mr_idr; | |
141 | extern struct idr ib_uverbs_mw_idr; | |
142 | extern struct idr ib_uverbs_ah_idr; | |
143 | extern struct idr ib_uverbs_cq_idr; | |
144 | extern struct idr ib_uverbs_qp_idr; | |
f520ba5a | 145 | extern struct idr ib_uverbs_srq_idr; |
bc38a6ab | 146 | |
9ead190b RD |
147 | void idr_remove_uobj(struct idr *idp, struct ib_uobject *uobj); |
148 | ||
6b73597e RD |
149 | struct file *ib_uverbs_alloc_event_file(struct ib_uverbs_file *uverbs_file, |
150 | int is_async, int *fd); | |
6b73597e RD |
151 | struct ib_uverbs_event_file *ib_uverbs_lookup_comp_file(int fd); |
152 | ||
70a30e16 RD |
153 | void ib_uverbs_release_ucq(struct ib_uverbs_file *file, |
154 | struct ib_uverbs_event_file *ev_file, | |
155 | struct ib_ucq_object *uobj); | |
156 | void ib_uverbs_release_uevent(struct ib_uverbs_file *file, | |
157 | struct ib_uevent_object *uobj); | |
158 | ||
bc38a6ab RD |
159 | void ib_uverbs_comp_handler(struct ib_cq *cq, void *cq_context); |
160 | void ib_uverbs_cq_event_handler(struct ib_event *event, void *context_ptr); | |
161 | void ib_uverbs_qp_event_handler(struct ib_event *event, void *context_ptr); | |
f520ba5a | 162 | void ib_uverbs_srq_event_handler(struct ib_event *event, void *context_ptr); |
6b73597e RD |
163 | void ib_uverbs_event_handler(struct ib_event_handler *handler, |
164 | struct ib_event *event); | |
bc38a6ab | 165 | |
bc38a6ab RD |
166 | #define IB_UVERBS_DECLARE_CMD(name) \ |
167 | ssize_t ib_uverbs_##name(struct ib_uverbs_file *file, \ | |
168 | const char __user *buf, int in_len, \ | |
169 | int out_len) | |
170 | ||
bc38a6ab RD |
171 | IB_UVERBS_DECLARE_CMD(get_context); |
172 | IB_UVERBS_DECLARE_CMD(query_device); | |
173 | IB_UVERBS_DECLARE_CMD(query_port); | |
bc38a6ab RD |
174 | IB_UVERBS_DECLARE_CMD(alloc_pd); |
175 | IB_UVERBS_DECLARE_CMD(dealloc_pd); | |
176 | IB_UVERBS_DECLARE_CMD(reg_mr); | |
177 | IB_UVERBS_DECLARE_CMD(dereg_mr); | |
6b73597e | 178 | IB_UVERBS_DECLARE_CMD(create_comp_channel); |
bc38a6ab | 179 | IB_UVERBS_DECLARE_CMD(create_cq); |
33b9b3ee | 180 | IB_UVERBS_DECLARE_CMD(resize_cq); |
67cdb40c RD |
181 | IB_UVERBS_DECLARE_CMD(poll_cq); |
182 | IB_UVERBS_DECLARE_CMD(req_notify_cq); | |
bc38a6ab RD |
183 | IB_UVERBS_DECLARE_CMD(destroy_cq); |
184 | IB_UVERBS_DECLARE_CMD(create_qp); | |
7ccc9a24 | 185 | IB_UVERBS_DECLARE_CMD(query_qp); |
bc38a6ab RD |
186 | IB_UVERBS_DECLARE_CMD(modify_qp); |
187 | IB_UVERBS_DECLARE_CMD(destroy_qp); | |
67cdb40c RD |
188 | IB_UVERBS_DECLARE_CMD(post_send); |
189 | IB_UVERBS_DECLARE_CMD(post_recv); | |
190 | IB_UVERBS_DECLARE_CMD(post_srq_recv); | |
191 | IB_UVERBS_DECLARE_CMD(create_ah); | |
192 | IB_UVERBS_DECLARE_CMD(destroy_ah); | |
bc38a6ab RD |
193 | IB_UVERBS_DECLARE_CMD(attach_mcast); |
194 | IB_UVERBS_DECLARE_CMD(detach_mcast); | |
f520ba5a RD |
195 | IB_UVERBS_DECLARE_CMD(create_srq); |
196 | IB_UVERBS_DECLARE_CMD(modify_srq); | |
8bdb0e86 | 197 | IB_UVERBS_DECLARE_CMD(query_srq); |
f520ba5a | 198 | IB_UVERBS_DECLARE_CMD(destroy_srq); |
bc38a6ab RD |
199 | |
200 | #endif /* UVERBS_H */ |