1 /*
2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005, 2006 Cisco Systems, Inc. All rights reserved.
4 * Copyright (c) 2005 PathScale, Inc. All rights reserved.
5 *
6 * This software is available to you under a choice of one of two
7 * licenses. You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
11 *
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
14 * conditions are met:
15 *
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
18 * disclaimer.
19 *
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials
23 * provided with the distribution.
24 *
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 * SOFTWARE.
33 */
34
35 #ifndef INFINIBAND_DRIVER_H
36 #define INFINIBAND_DRIVER_H
37
38 #include <infiniband/verbs.h>
39 #include <infiniband/kern-abi.h>
40
41 #ifdef __cplusplus
42 # define BEGIN_C_DECLS extern "C" {
43 # define END_C_DECLS }
44 #else /* !__cplusplus */
45 # define BEGIN_C_DECLS
46 # define END_C_DECLS
47 #endif /* __cplusplus */
48
49 /*
50 * Extension that low-level drivers should add to their .so filename
51 * (probably via libtool "-release" option). For example a low-level
52 * driver named "libfoo" should build a plug-in named "libfoo-rdmav2.so".
53 */
54 #define IBV_DEVICE_LIBRARY_EXTENSION rdmav2
55
56 struct verbs_device;
57
58 enum verbs_xrcd_mask {
59 VERBS_XRCD_HANDLE = 1 << 0,
60 VERBS_XRCD_RESERVED = 1 << 1
61 };
62
63 struct verbs_xrcd {
64 struct ibv_xrcd xrcd;
65 uint32_t comp_mask;
66 uint32_t handle;
67 };
68
69 enum verbs_srq_mask {
70 VERBS_SRQ_TYPE = 1 << 0,
71 VERBS_SRQ_XRCD = 1 << 1,
72 VERBS_SRQ_CQ = 1 << 2,
73 VERBS_SRQ_NUM = 1 << 3,
74 VERBS_SRQ_RESERVED = 1 << 4
75 };
76
77 struct verbs_srq {
78 struct ibv_srq srq;
79 uint32_t comp_mask;
80 enum ibv_srq_type srq_type;
81 struct verbs_xrcd *xrcd;
82 struct ibv_cq *cq;
83 uint32_t srq_num;
84 };
85
86 enum verbs_qp_mask {
87 VERBS_QP_XRCD = 1 << 0,
88 VERBS_QP_RESERVED = 1 << 1
89 };
90
91 enum ibv_gid_type {
92 IBV_GID_TYPE_IB_ROCE_V1,
93 IBV_GID_TYPE_ROCE_V2,
94 };
95
96 struct verbs_qp {
97 struct ibv_qp qp;
98 uint32_t comp_mask;
99 struct verbs_xrcd *xrcd;
100 };
101
102 /* Must change the PRIVATE IBVERBS_PRIVATE_ symbol if this is changed */
103 struct verbs_device_ops {
104 /* Old interface, do not use in new code. */
105 struct ibv_context *(*alloc_context)(struct ibv_device *device,
106 int cmd_fd);
107 void (*free_context)(struct ibv_context *context);
108
109 /* New interface */
110 int (*init_context)(struct verbs_device *device,
111 struct ibv_context *ctx, int cmd_fd);
112 void (*uninit_context)(struct verbs_device *device,
113 struct ibv_context *ctx);
114 };
115
116 /* Must change the PRIVATE IBVERBS_PRIVATE_ symbol if this is changed */
117 struct verbs_device {
118 struct ibv_device device; /* Must be first */
119 const struct verbs_device_ops *ops;
120 size_t sz;
121 size_t size_of_context;
122 };
123
124 static inline struct verbs_device *
verbs_get_device(const struct ibv_device * dev)125 verbs_get_device(const struct ibv_device *dev)
126 {
127 return container_of(dev, struct verbs_device, device);
128 }
129
130 typedef struct verbs_device *(*verbs_driver_init_func)(const char *uverbs_sys_path,
131 int abi_version);
132 void verbs_register_driver(const char *name, verbs_driver_init_func init_func);
133 int verbs_init_cq(struct ibv_cq *cq, struct ibv_context *context,
134 struct ibv_comp_channel *channel,
135 void *cq_context);
136 void verbs_cleanup_cq(struct ibv_cq *cq);
137 int ibv_init_wq(struct ibv_wq *wq);
138 void ibv_cleanup_wq(struct ibv_wq *wq);
139
140 int ibv_cmd_get_context(struct ibv_context *context, struct ibv_get_context *cmd,
141 size_t cmd_size, struct ibv_get_context_resp *resp,
142 size_t resp_size);
143 int ibv_cmd_query_device(struct ibv_context *context,
144 struct ibv_device_attr *device_attr,
145 uint64_t *raw_fw_ver,
146 struct ibv_query_device *cmd, size_t cmd_size);
147 int ibv_cmd_query_device_ex(struct ibv_context *context,
148 const struct ibv_query_device_ex_input *input,
149 struct ibv_device_attr_ex *attr, size_t attr_size,
150 uint64_t *raw_fw_ver,
151 struct ibv_query_device_ex *cmd,
152 size_t cmd_core_size,
153 size_t cmd_size,
154 struct ibv_query_device_resp_ex *resp,
155 size_t resp_core_size,
156 size_t resp_size);
157 int ibv_cmd_query_port(struct ibv_context *context, uint8_t port_num,
158 struct ibv_port_attr *port_attr,
159 struct ibv_query_port *cmd, size_t cmd_size);
160 int ibv_cmd_alloc_pd(struct ibv_context *context, struct ibv_pd *pd,
161 struct ibv_alloc_pd *cmd, size_t cmd_size,
162 struct ibv_alloc_pd_resp *resp, size_t resp_size);
163 int ibv_cmd_dealloc_pd(struct ibv_pd *pd);
164 int ibv_cmd_open_xrcd(struct ibv_context *context, struct verbs_xrcd *xrcd,
165 int vxrcd_size,
166 struct ibv_xrcd_init_attr *attr,
167 struct ibv_open_xrcd *cmd, size_t cmd_size,
168 struct ibv_open_xrcd_resp *resp, size_t resp_size);
169 int ibv_cmd_close_xrcd(struct verbs_xrcd *xrcd);
170 #define IBV_CMD_REG_MR_HAS_RESP_PARAMS
171 int ibv_cmd_reg_mr(struct ibv_pd *pd, void *addr, size_t length,
172 uint64_t hca_va, int access,
173 struct ibv_mr *mr, struct ibv_reg_mr *cmd,
174 size_t cmd_size,
175 struct ibv_reg_mr_resp *resp, size_t resp_size);
176 int ibv_cmd_rereg_mr(struct ibv_mr *mr, uint32_t flags, void *addr,
177 size_t length, uint64_t hca_va, int access,
178 struct ibv_pd *pd, struct ibv_rereg_mr *cmd,
179 size_t cmd_sz, struct ibv_rereg_mr_resp *resp,
180 size_t resp_sz);
181 int ibv_cmd_dereg_mr(struct ibv_mr *mr);
182 int ibv_cmd_alloc_mw(struct ibv_pd *pd, enum ibv_mw_type type,
183 struct ibv_mw *mw, struct ibv_alloc_mw *cmd,
184 size_t cmd_size,
185 struct ibv_alloc_mw_resp *resp, size_t resp_size);
186 int ibv_cmd_dealloc_mw(struct ibv_mw *mw,
187 struct ibv_dealloc_mw *cmd, size_t cmd_size);
188 int ibv_cmd_create_cq(struct ibv_context *context, int cqe,
189 struct ibv_comp_channel *channel,
190 int comp_vector, struct ibv_cq *cq,
191 struct ibv_create_cq *cmd, size_t cmd_size,
192 struct ibv_create_cq_resp *resp, size_t resp_size);
193 int ibv_cmd_create_cq_ex(struct ibv_context *context,
194 struct ibv_cq_init_attr_ex *cq_attr,
195 struct ibv_cq_ex *cq,
196 struct ibv_create_cq_ex *cmd,
197 size_t cmd_core_size,
198 size_t cmd_size,
199 struct ibv_create_cq_resp_ex *resp,
200 size_t resp_core_size,
201 size_t resp_size);
202 int ibv_cmd_poll_cq(struct ibv_cq *cq, int ne, struct ibv_wc *wc);
203 int ibv_cmd_req_notify_cq(struct ibv_cq *cq, int solicited_only);
204 #define IBV_CMD_RESIZE_CQ_HAS_RESP_PARAMS
205 int ibv_cmd_resize_cq(struct ibv_cq *cq, int cqe,
206 struct ibv_resize_cq *cmd, size_t cmd_size,
207 struct ibv_resize_cq_resp *resp, size_t resp_size);
208 int ibv_cmd_destroy_cq(struct ibv_cq *cq);
209
210 int ibv_cmd_create_srq(struct ibv_pd *pd,
211 struct ibv_srq *srq, struct ibv_srq_init_attr *attr,
212 struct ibv_create_srq *cmd, size_t cmd_size,
213 struct ibv_create_srq_resp *resp, size_t resp_size);
214 int ibv_cmd_create_srq_ex(struct ibv_context *context,
215 struct verbs_srq *srq, int vsrq_sz,
216 struct ibv_srq_init_attr_ex *attr_ex,
217 struct ibv_create_xsrq *cmd, size_t cmd_size,
218 struct ibv_create_srq_resp *resp, size_t resp_size);
219 int ibv_cmd_modify_srq(struct ibv_srq *srq,
220 struct ibv_srq_attr *srq_attr,
221 int srq_attr_mask,
222 struct ibv_modify_srq *cmd, size_t cmd_size);
223 int ibv_cmd_query_srq(struct ibv_srq *srq,
224 struct ibv_srq_attr *srq_attr,
225 struct ibv_query_srq *cmd, size_t cmd_size);
226 int ibv_cmd_destroy_srq(struct ibv_srq *srq);
227
228 int ibv_cmd_create_qp(struct ibv_pd *pd,
229 struct ibv_qp *qp, struct ibv_qp_init_attr *attr,
230 struct ibv_create_qp *cmd, size_t cmd_size,
231 struct ibv_create_qp_resp *resp, size_t resp_size);
232 int ibv_cmd_create_qp_ex(struct ibv_context *context,
233 struct verbs_qp *qp, int vqp_sz,
234 struct ibv_qp_init_attr_ex *attr_ex,
235 struct ibv_create_qp *cmd, size_t cmd_size,
236 struct ibv_create_qp_resp *resp, size_t resp_size);
237 int ibv_cmd_create_qp_ex2(struct ibv_context *context,
238 struct verbs_qp *qp, int vqp_sz,
239 struct ibv_qp_init_attr_ex *qp_attr,
240 struct ibv_create_qp_ex *cmd,
241 size_t cmd_core_size,
242 size_t cmd_size,
243 struct ibv_create_qp_resp_ex *resp,
244 size_t resp_core_size,
245 size_t resp_size);
246 int ibv_cmd_open_qp(struct ibv_context *context,
247 struct verbs_qp *qp, int vqp_sz,
248 struct ibv_qp_open_attr *attr,
249 struct ibv_open_qp *cmd, size_t cmd_size,
250 struct ibv_create_qp_resp *resp, size_t resp_size);
251 int ibv_cmd_query_qp(struct ibv_qp *qp, struct ibv_qp_attr *qp_attr,
252 int attr_mask,
253 struct ibv_qp_init_attr *qp_init_attr,
254 struct ibv_query_qp *cmd, size_t cmd_size);
255 int ibv_cmd_modify_qp(struct ibv_qp *qp, struct ibv_qp_attr *attr,
256 int attr_mask,
257 struct ibv_modify_qp *cmd, size_t cmd_size);
258 int ibv_cmd_modify_qp_ex(struct ibv_qp *qp, struct ibv_qp_attr *attr,
259 int attr_mask, struct ibv_modify_qp_ex *cmd,
260 size_t cmd_core_size, size_t cmd_size,
261 struct ibv_modify_qp_resp_ex *resp,
262 size_t resp_core_size, size_t resp_size);
263 int ibv_cmd_destroy_qp(struct ibv_qp *qp);
264 int ibv_cmd_post_send(struct ibv_qp *ibqp, struct ibv_send_wr *wr,
265 struct ibv_send_wr **bad_wr);
266 int ibv_cmd_post_recv(struct ibv_qp *ibqp, struct ibv_recv_wr *wr,
267 struct ibv_recv_wr **bad_wr);
268 int ibv_cmd_post_srq_recv(struct ibv_srq *srq, struct ibv_recv_wr *wr,
269 struct ibv_recv_wr **bad_wr);
270 int ibv_cmd_create_ah(struct ibv_pd *pd, struct ibv_ah *ah,
271 struct ibv_ah_attr *attr,
272 struct ibv_create_ah_resp *resp,
273 size_t resp_size);
274 int ibv_cmd_destroy_ah(struct ibv_ah *ah);
275 int ibv_cmd_attach_mcast(struct ibv_qp *qp, const union ibv_gid *gid, uint16_t lid);
276 int ibv_cmd_detach_mcast(struct ibv_qp *qp, const union ibv_gid *gid, uint16_t lid);
277
278 struct ibv_flow *ibv_cmd_create_flow(struct ibv_qp *qp,
279 struct ibv_flow_attr *flow_attr);
280 int ibv_cmd_destroy_flow(struct ibv_flow *flow_id);
281 int ibv_cmd_create_wq(struct ibv_context *context,
282 struct ibv_wq_init_attr *wq_init_attr,
283 struct ibv_wq *wq,
284 struct ibv_create_wq *cmd,
285 size_t cmd_core_size,
286 size_t cmd_size,
287 struct ibv_create_wq_resp *resp,
288 size_t resp_core_size,
289 size_t resp_size);
290
291 int ibv_cmd_modify_wq(struct ibv_wq *wq, struct ibv_wq_attr *attr,
292 struct ibv_modify_wq *cmd, size_t cmd_core_size,
293 size_t cmd_size);
294 int ibv_cmd_destroy_wq(struct ibv_wq *wq);
295 int ibv_cmd_create_rwq_ind_table(struct ibv_context *context,
296 struct ibv_rwq_ind_table_init_attr *init_attr,
297 struct ibv_rwq_ind_table *rwq_ind_table,
298 struct ibv_create_rwq_ind_table *cmd,
299 size_t cmd_core_size,
300 size_t cmd_size,
301 struct ibv_create_rwq_ind_table_resp *resp,
302 size_t resp_core_size,
303 size_t resp_size);
304 int ibv_cmd_destroy_rwq_ind_table(struct ibv_rwq_ind_table *rwq_ind_table);
305 int ibv_dontfork_range(void *base, size_t size);
306 int ibv_dofork_range(void *base, size_t size);
307
308 /*
309 * sysfs helper functions
310 */
311 const char *ibv_get_sysfs_path(void);
312
313 int ibv_read_sysfs_file(const char *dir, const char *file,
314 char *buf, size_t size);
315
verbs_get_srq_num(struct ibv_srq * srq,uint32_t * srq_num)316 static inline int verbs_get_srq_num(struct ibv_srq *srq, uint32_t *srq_num)
317 {
318 struct verbs_srq *vsrq = container_of(srq, struct verbs_srq, srq);
319 if (vsrq->comp_mask & VERBS_SRQ_NUM) {
320 *srq_num = vsrq->srq_num;
321 return 0;
322 }
323 return ENOSYS;
324 }
325
326 int ibv_query_gid_type(struct ibv_context *context, uint8_t port_num,
327 unsigned int index, enum ibv_gid_type *type);
328 #endif /* INFINIBAND_DRIVER_H */
329