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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. | |
bc38a6ab RD |
35 | */ |
36 | ||
37 | #ifndef UVERBS_H | |
38 | #define UVERBS_H | |
39 | ||
bc38a6ab RD |
40 | #include <linux/kref.h> |
41 | #include <linux/idr.h> | |
95ed644f | 42 | #include <linux/mutex.h> |
fd60ae40 | 43 | #include <linux/completion.h> |
055422dd | 44 | #include <linux/cdev.h> |
bc38a6ab | 45 | |
a4d61e84 | 46 | #include <rdma/ib_verbs.h> |
f7c6a7b5 | 47 | #include <rdma/ib_umem.h> |
a4d61e84 | 48 | #include <rdma/ib_user_verbs.h> |
bc38a6ab | 49 | |
70a30e16 RD |
50 | /* |
51 | * Our lifetime rules for these structs are the following: | |
52 | * | |
53 | * struct ib_uverbs_device: One reference is held by the module and | |
54 | * released in ib_uverbs_remove_one(). Another reference is taken by | |
55 | * ib_uverbs_open() each time the character special file is opened, | |
56 | * and released in ib_uverbs_release_file() when the file is released. | |
57 | * | |
58 | * struct ib_uverbs_file: One reference is held by the VFS and | |
59 | * released when the file is closed. Another reference is taken when | |
60 | * an asynchronous event queue file is created and released when the | |
61 | * event file is closed. | |
62 | * | |
63 | * struct ib_uverbs_event_file: One reference is held by the VFS and | |
64 | * released when the file is closed. For asynchronous event files, | |
65 | * another reference is held by the corresponding main context file | |
66 | * and released when that file is closed. For completion event files, | |
67 | * a reference is taken when a CQ is created that uses the file, and | |
68 | * released when the CQ is destroyed. | |
69 | */ | |
70 | ||
bc38a6ab | 71 | struct ib_uverbs_device { |
70a30e16 | 72 | struct kref ref; |
055422dd | 73 | int num_comp_vectors; |
fd60ae40 | 74 | struct completion comp; |
f4e91eb4 | 75 | struct device *dev; |
bc38a6ab | 76 | struct ib_device *ib_dev; |
055422dd AC |
77 | int devnum; |
78 | struct cdev cdev; | |
53d0bd1e SH |
79 | struct rb_root xrcd_tree; |
80 | struct mutex xrcd_tree_mutex; | |
bc38a6ab RD |
81 | }; |
82 | ||
83 | struct ib_uverbs_event_file { | |
84 | struct kref ref; | |
830a3871 | 85 | int is_async; |
bc38a6ab RD |
86 | struct ib_uverbs_file *uverbs_file; |
87 | spinlock_t lock; | |
830a3871 | 88 | int is_closed; |
bc38a6ab | 89 | wait_queue_head_t poll_wait; |
abdf119b | 90 | struct fasync_struct *async_queue; |
bc38a6ab RD |
91 | struct list_head event_list; |
92 | }; | |
93 | ||
94 | struct ib_uverbs_file { | |
95 | struct kref ref; | |
95ed644f | 96 | struct mutex mutex; |
bc38a6ab RD |
97 | struct ib_uverbs_device *device; |
98 | struct ib_ucontext *ucontext; | |
99 | struct ib_event_handler event_handler; | |
6b73597e | 100 | struct ib_uverbs_event_file *async_file; |
bc38a6ab RD |
101 | }; |
102 | ||
63aaf647 RD |
103 | struct ib_uverbs_event { |
104 | union { | |
105 | struct ib_uverbs_async_event_desc async; | |
106 | struct ib_uverbs_comp_event_desc comp; | |
107 | } desc; | |
bc38a6ab | 108 | struct list_head list; |
63aaf647 RD |
109 | struct list_head obj_list; |
110 | u32 *counter; | |
bc38a6ab RD |
111 | }; |
112 | ||
f4e40156 JM |
113 | struct ib_uverbs_mcast_entry { |
114 | struct list_head list; | |
115 | union ib_gid gid; | |
116 | u16 lid; | |
117 | }; | |
118 | ||
63aaf647 RD |
119 | struct ib_uevent_object { |
120 | struct ib_uobject uobject; | |
121 | struct list_head event_list; | |
122 | u32 events_reported; | |
bc38a6ab RD |
123 | }; |
124 | ||
53d0bd1e SH |
125 | struct ib_uxrcd_object { |
126 | struct ib_uobject uobject; | |
127 | atomic_t refcnt; | |
128 | }; | |
129 | ||
8541f8de SH |
130 | struct ib_usrq_object { |
131 | struct ib_uevent_object uevent; | |
132 | struct ib_uxrcd_object *uxrcd; | |
133 | }; | |
134 | ||
f4e40156 JM |
135 | struct ib_uqp_object { |
136 | struct ib_uevent_object uevent; | |
137 | struct list_head mcast_list; | |
138 | }; | |
139 | ||
63aaf647 RD |
140 | struct ib_ucq_object { |
141 | struct ib_uobject uobject; | |
7162a3e0 | 142 | struct ib_uverbs_file *uverbs_file; |
63aaf647 RD |
143 | struct list_head comp_list; |
144 | struct list_head async_list; | |
145 | u32 comp_events_reported; | |
146 | u32 async_events_reported; | |
bc38a6ab RD |
147 | }; |
148 | ||
9ead190b | 149 | extern spinlock_t ib_uverbs_idr_lock; |
bc38a6ab RD |
150 | extern struct idr ib_uverbs_pd_idr; |
151 | extern struct idr ib_uverbs_mr_idr; | |
152 | extern struct idr ib_uverbs_mw_idr; | |
153 | extern struct idr ib_uverbs_ah_idr; | |
154 | extern struct idr ib_uverbs_cq_idr; | |
155 | extern struct idr ib_uverbs_qp_idr; | |
f520ba5a | 156 | extern struct idr ib_uverbs_srq_idr; |
53d0bd1e | 157 | extern struct idr ib_uverbs_xrcd_idr; |
bc38a6ab | 158 | |
9ead190b RD |
159 | void idr_remove_uobj(struct idr *idp, struct ib_uobject *uobj); |
160 | ||
6b73597e | 161 | struct file *ib_uverbs_alloc_event_file(struct ib_uverbs_file *uverbs_file, |
b1e4594b | 162 | int is_async); |
6b73597e RD |
163 | struct ib_uverbs_event_file *ib_uverbs_lookup_comp_file(int fd); |
164 | ||
70a30e16 RD |
165 | void ib_uverbs_release_ucq(struct ib_uverbs_file *file, |
166 | struct ib_uverbs_event_file *ev_file, | |
167 | struct ib_ucq_object *uobj); | |
168 | void ib_uverbs_release_uevent(struct ib_uverbs_file *file, | |
169 | struct ib_uevent_object *uobj); | |
170 | ||
bc38a6ab RD |
171 | void ib_uverbs_comp_handler(struct ib_cq *cq, void *cq_context); |
172 | void ib_uverbs_cq_event_handler(struct ib_event *event, void *context_ptr); | |
173 | void ib_uverbs_qp_event_handler(struct ib_event *event, void *context_ptr); | |
f520ba5a | 174 | void ib_uverbs_srq_event_handler(struct ib_event *event, void *context_ptr); |
6b73597e RD |
175 | void ib_uverbs_event_handler(struct ib_event_handler *handler, |
176 | struct ib_event *event); | |
53d0bd1e | 177 | void ib_uverbs_dealloc_xrcd(struct ib_uverbs_device *dev, struct ib_xrcd *xrcd); |
bc38a6ab | 178 | |
bc38a6ab RD |
179 | #define IB_UVERBS_DECLARE_CMD(name) \ |
180 | ssize_t ib_uverbs_##name(struct ib_uverbs_file *file, \ | |
181 | const char __user *buf, int in_len, \ | |
182 | int out_len) | |
183 | ||
bc38a6ab RD |
184 | IB_UVERBS_DECLARE_CMD(get_context); |
185 | IB_UVERBS_DECLARE_CMD(query_device); | |
186 | IB_UVERBS_DECLARE_CMD(query_port); | |
bc38a6ab RD |
187 | IB_UVERBS_DECLARE_CMD(alloc_pd); |
188 | IB_UVERBS_DECLARE_CMD(dealloc_pd); | |
189 | IB_UVERBS_DECLARE_CMD(reg_mr); | |
190 | IB_UVERBS_DECLARE_CMD(dereg_mr); | |
6b73597e | 191 | IB_UVERBS_DECLARE_CMD(create_comp_channel); |
bc38a6ab | 192 | IB_UVERBS_DECLARE_CMD(create_cq); |
33b9b3ee | 193 | IB_UVERBS_DECLARE_CMD(resize_cq); |
67cdb40c RD |
194 | IB_UVERBS_DECLARE_CMD(poll_cq); |
195 | IB_UVERBS_DECLARE_CMD(req_notify_cq); | |
bc38a6ab RD |
196 | IB_UVERBS_DECLARE_CMD(destroy_cq); |
197 | IB_UVERBS_DECLARE_CMD(create_qp); | |
42849b26 | 198 | IB_UVERBS_DECLARE_CMD(open_qp); |
7ccc9a24 | 199 | IB_UVERBS_DECLARE_CMD(query_qp); |
bc38a6ab RD |
200 | IB_UVERBS_DECLARE_CMD(modify_qp); |
201 | IB_UVERBS_DECLARE_CMD(destroy_qp); | |
67cdb40c RD |
202 | IB_UVERBS_DECLARE_CMD(post_send); |
203 | IB_UVERBS_DECLARE_CMD(post_recv); | |
204 | IB_UVERBS_DECLARE_CMD(post_srq_recv); | |
205 | IB_UVERBS_DECLARE_CMD(create_ah); | |
206 | IB_UVERBS_DECLARE_CMD(destroy_ah); | |
bc38a6ab RD |
207 | IB_UVERBS_DECLARE_CMD(attach_mcast); |
208 | IB_UVERBS_DECLARE_CMD(detach_mcast); | |
f520ba5a RD |
209 | IB_UVERBS_DECLARE_CMD(create_srq); |
210 | IB_UVERBS_DECLARE_CMD(modify_srq); | |
8bdb0e86 | 211 | IB_UVERBS_DECLARE_CMD(query_srq); |
f520ba5a | 212 | IB_UVERBS_DECLARE_CMD(destroy_srq); |
8541f8de | 213 | IB_UVERBS_DECLARE_CMD(create_xsrq); |
53d0bd1e SH |
214 | IB_UVERBS_DECLARE_CMD(open_xrcd); |
215 | IB_UVERBS_DECLARE_CMD(close_xrcd); | |
bc38a6ab RD |
216 | |
217 | #endif /* UVERBS_H */ |