2 * Copyright (c) 2004 Mellanox Technologies Ltd. All rights reserved.
3 * Copyright (c) 2004 Infinicon Corporation. All rights reserved.
4 * Copyright (c) 2004 Intel Corporation. All rights reserved.
5 * Copyright (c) 2004 Topspin Corporation. All rights reserved.
6 * Copyright (c) 2004 Voltaire Corporation. All rights reserved.
7 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
8 * Copyright (c) 2005 Cisco Systems. All rights reserved.
10 * This software is available to you under a choice of one of two
11 * licenses. You may choose to be licensed under the terms of the GNU
12 * General Public License (GPL) Version 2, available from the file
13 * COPYING in the main directory of this source tree, or the
14 * OpenIB.org BSD license below:
16 * Redistribution and use in source and binary forms, with or
17 * without modification, are permitted provided that the following
20 * - Redistributions of source code must retain the above
21 * copyright notice, this list of conditions and the following
24 * - Redistributions in binary form must reproduce the above
25 * copyright notice, this list of conditions and the following
26 * disclaimer in the documentation and/or other materials
27 * provided with the distribution.
29 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
30 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
31 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
32 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
33 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
34 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
35 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
38 * $Id: verbs.c 1349 2004-12-16 21:09:43Z roland $
41 #include <linux/errno.h>
42 #include <linux/err.h>
43 #include <linux/string.h>
45 #include <rdma/ib_verbs.h>
46 #include <rdma/ib_cache.h>
48 /* Protection domains */
50 struct ib_pd
*ib_alloc_pd(struct ib_device
*device
)
54 pd
= device
->alloc_pd(device
, NULL
, NULL
);
59 atomic_set(&pd
->usecnt
, 0);
64 EXPORT_SYMBOL(ib_alloc_pd
);
66 int ib_dealloc_pd(struct ib_pd
*pd
)
68 if (atomic_read(&pd
->usecnt
))
71 return pd
->device
->dealloc_pd(pd
);
73 EXPORT_SYMBOL(ib_dealloc_pd
);
77 struct ib_ah
*ib_create_ah(struct ib_pd
*pd
, struct ib_ah_attr
*ah_attr
)
81 ah
= pd
->device
->create_ah(pd
, ah_attr
);
84 ah
->device
= pd
->device
;
87 atomic_inc(&pd
->usecnt
);
92 EXPORT_SYMBOL(ib_create_ah
);
94 struct ib_ah
*ib_create_ah_from_wc(struct ib_pd
*pd
, struct ib_wc
*wc
,
95 struct ib_grh
*grh
, u8 port_num
)
97 struct ib_ah_attr ah_attr
;
102 memset(&ah_attr
, 0, sizeof ah_attr
);
103 ah_attr
.dlid
= wc
->slid
;
105 ah_attr
.src_path_bits
= wc
->dlid_path_bits
;
106 ah_attr
.port_num
= port_num
;
108 if (wc
->wc_flags
& IB_WC_GRH
) {
109 ah_attr
.ah_flags
= IB_AH_GRH
;
110 ah_attr
.grh
.dgid
= grh
->dgid
;
112 ret
= ib_find_cached_gid(pd
->device
, &grh
->sgid
, &port_num
,
117 ah_attr
.grh
.sgid_index
= (u8
) gid_index
;
118 flow_class
= be32_to_cpu(grh
->version_tclass_flow
);
119 ah_attr
.grh
.flow_label
= flow_class
& 0xFFFFF;
120 ah_attr
.grh
.traffic_class
= (flow_class
>> 20) & 0xFF;
121 ah_attr
.grh
.hop_limit
= grh
->hop_limit
;
124 return ib_create_ah(pd
, &ah_attr
);
126 EXPORT_SYMBOL(ib_create_ah_from_wc
);
128 int ib_modify_ah(struct ib_ah
*ah
, struct ib_ah_attr
*ah_attr
)
130 return ah
->device
->modify_ah
?
131 ah
->device
->modify_ah(ah
, ah_attr
) :
134 EXPORT_SYMBOL(ib_modify_ah
);
136 int ib_query_ah(struct ib_ah
*ah
, struct ib_ah_attr
*ah_attr
)
138 return ah
->device
->query_ah
?
139 ah
->device
->query_ah(ah
, ah_attr
) :
142 EXPORT_SYMBOL(ib_query_ah
);
144 int ib_destroy_ah(struct ib_ah
*ah
)
150 ret
= ah
->device
->destroy_ah(ah
);
152 atomic_dec(&pd
->usecnt
);
156 EXPORT_SYMBOL(ib_destroy_ah
);
158 /* Shared receive queues */
160 struct ib_srq
*ib_create_srq(struct ib_pd
*pd
,
161 struct ib_srq_init_attr
*srq_init_attr
)
165 if (!pd
->device
->create_srq
)
166 return ERR_PTR(-ENOSYS
);
168 srq
= pd
->device
->create_srq(pd
, srq_init_attr
, NULL
);
171 srq
->device
= pd
->device
;
174 srq
->event_handler
= srq_init_attr
->event_handler
;
175 srq
->srq_context
= srq_init_attr
->srq_context
;
176 atomic_inc(&pd
->usecnt
);
177 atomic_set(&srq
->usecnt
, 0);
182 EXPORT_SYMBOL(ib_create_srq
);
184 int ib_modify_srq(struct ib_srq
*srq
,
185 struct ib_srq_attr
*srq_attr
,
186 enum ib_srq_attr_mask srq_attr_mask
)
188 return srq
->device
->modify_srq(srq
, srq_attr
, srq_attr_mask
);
190 EXPORT_SYMBOL(ib_modify_srq
);
192 int ib_query_srq(struct ib_srq
*srq
,
193 struct ib_srq_attr
*srq_attr
)
195 return srq
->device
->query_srq
?
196 srq
->device
->query_srq(srq
, srq_attr
) : -ENOSYS
;
198 EXPORT_SYMBOL(ib_query_srq
);
200 int ib_destroy_srq(struct ib_srq
*srq
)
205 if (atomic_read(&srq
->usecnt
))
210 ret
= srq
->device
->destroy_srq(srq
);
212 atomic_dec(&pd
->usecnt
);
216 EXPORT_SYMBOL(ib_destroy_srq
);
220 struct ib_qp
*ib_create_qp(struct ib_pd
*pd
,
221 struct ib_qp_init_attr
*qp_init_attr
)
225 qp
= pd
->device
->create_qp(pd
, qp_init_attr
, NULL
);
228 qp
->device
= pd
->device
;
230 qp
->send_cq
= qp_init_attr
->send_cq
;
231 qp
->recv_cq
= qp_init_attr
->recv_cq
;
232 qp
->srq
= qp_init_attr
->srq
;
234 qp
->event_handler
= qp_init_attr
->event_handler
;
235 qp
->qp_context
= qp_init_attr
->qp_context
;
236 qp
->qp_type
= qp_init_attr
->qp_type
;
237 atomic_inc(&pd
->usecnt
);
238 atomic_inc(&qp_init_attr
->send_cq
->usecnt
);
239 atomic_inc(&qp_init_attr
->recv_cq
->usecnt
);
240 if (qp_init_attr
->srq
)
241 atomic_inc(&qp_init_attr
->srq
->usecnt
);
246 EXPORT_SYMBOL(ib_create_qp
);
248 int ib_modify_qp(struct ib_qp
*qp
,
249 struct ib_qp_attr
*qp_attr
,
252 return qp
->device
->modify_qp(qp
, qp_attr
, qp_attr_mask
);
254 EXPORT_SYMBOL(ib_modify_qp
);
256 int ib_query_qp(struct ib_qp
*qp
,
257 struct ib_qp_attr
*qp_attr
,
259 struct ib_qp_init_attr
*qp_init_attr
)
261 return qp
->device
->query_qp
?
262 qp
->device
->query_qp(qp
, qp_attr
, qp_attr_mask
, qp_init_attr
) :
265 EXPORT_SYMBOL(ib_query_qp
);
267 int ib_destroy_qp(struct ib_qp
*qp
)
270 struct ib_cq
*scq
, *rcq
;
279 ret
= qp
->device
->destroy_qp(qp
);
281 atomic_dec(&pd
->usecnt
);
282 atomic_dec(&scq
->usecnt
);
283 atomic_dec(&rcq
->usecnt
);
285 atomic_dec(&srq
->usecnt
);
290 EXPORT_SYMBOL(ib_destroy_qp
);
292 /* Completion queues */
294 struct ib_cq
*ib_create_cq(struct ib_device
*device
,
295 ib_comp_handler comp_handler
,
296 void (*event_handler
)(struct ib_event
*, void *),
297 void *cq_context
, int cqe
)
301 cq
= device
->create_cq(device
, cqe
, NULL
, NULL
);
306 cq
->comp_handler
= comp_handler
;
307 cq
->event_handler
= event_handler
;
308 cq
->cq_context
= cq_context
;
309 atomic_set(&cq
->usecnt
, 0);
314 EXPORT_SYMBOL(ib_create_cq
);
316 int ib_destroy_cq(struct ib_cq
*cq
)
318 if (atomic_read(&cq
->usecnt
))
321 return cq
->device
->destroy_cq(cq
);
323 EXPORT_SYMBOL(ib_destroy_cq
);
325 int ib_resize_cq(struct ib_cq
*cq
,
328 return cq
->device
->resize_cq
?
329 cq
->device
->resize_cq(cq
, cqe
) : -ENOSYS
;
331 EXPORT_SYMBOL(ib_resize_cq
);
335 struct ib_mr
*ib_get_dma_mr(struct ib_pd
*pd
, int mr_access_flags
)
339 mr
= pd
->device
->get_dma_mr(pd
, mr_access_flags
);
342 mr
->device
= pd
->device
;
345 atomic_inc(&pd
->usecnt
);
346 atomic_set(&mr
->usecnt
, 0);
351 EXPORT_SYMBOL(ib_get_dma_mr
);
353 struct ib_mr
*ib_reg_phys_mr(struct ib_pd
*pd
,
354 struct ib_phys_buf
*phys_buf_array
,
361 mr
= pd
->device
->reg_phys_mr(pd
, phys_buf_array
, num_phys_buf
,
362 mr_access_flags
, iova_start
);
365 mr
->device
= pd
->device
;
368 atomic_inc(&pd
->usecnt
);
369 atomic_set(&mr
->usecnt
, 0);
374 EXPORT_SYMBOL(ib_reg_phys_mr
);
376 int ib_rereg_phys_mr(struct ib_mr
*mr
,
379 struct ib_phys_buf
*phys_buf_array
,
384 struct ib_pd
*old_pd
;
387 if (!mr
->device
->rereg_phys_mr
)
390 if (atomic_read(&mr
->usecnt
))
395 ret
= mr
->device
->rereg_phys_mr(mr
, mr_rereg_mask
, pd
,
396 phys_buf_array
, num_phys_buf
,
397 mr_access_flags
, iova_start
);
399 if (!ret
&& (mr_rereg_mask
& IB_MR_REREG_PD
)) {
400 atomic_dec(&old_pd
->usecnt
);
401 atomic_inc(&pd
->usecnt
);
406 EXPORT_SYMBOL(ib_rereg_phys_mr
);
408 int ib_query_mr(struct ib_mr
*mr
, struct ib_mr_attr
*mr_attr
)
410 return mr
->device
->query_mr
?
411 mr
->device
->query_mr(mr
, mr_attr
) : -ENOSYS
;
413 EXPORT_SYMBOL(ib_query_mr
);
415 int ib_dereg_mr(struct ib_mr
*mr
)
420 if (atomic_read(&mr
->usecnt
))
424 ret
= mr
->device
->dereg_mr(mr
);
426 atomic_dec(&pd
->usecnt
);
430 EXPORT_SYMBOL(ib_dereg_mr
);
434 struct ib_mw
*ib_alloc_mw(struct ib_pd
*pd
)
438 if (!pd
->device
->alloc_mw
)
439 return ERR_PTR(-ENOSYS
);
441 mw
= pd
->device
->alloc_mw(pd
);
443 mw
->device
= pd
->device
;
446 atomic_inc(&pd
->usecnt
);
451 EXPORT_SYMBOL(ib_alloc_mw
);
453 int ib_dealloc_mw(struct ib_mw
*mw
)
459 ret
= mw
->device
->dealloc_mw(mw
);
461 atomic_dec(&pd
->usecnt
);
465 EXPORT_SYMBOL(ib_dealloc_mw
);
467 /* "Fast" memory regions */
469 struct ib_fmr
*ib_alloc_fmr(struct ib_pd
*pd
,
471 struct ib_fmr_attr
*fmr_attr
)
475 if (!pd
->device
->alloc_fmr
)
476 return ERR_PTR(-ENOSYS
);
478 fmr
= pd
->device
->alloc_fmr(pd
, mr_access_flags
, fmr_attr
);
480 fmr
->device
= pd
->device
;
482 atomic_inc(&pd
->usecnt
);
487 EXPORT_SYMBOL(ib_alloc_fmr
);
489 int ib_unmap_fmr(struct list_head
*fmr_list
)
493 if (list_empty(fmr_list
))
496 fmr
= list_entry(fmr_list
->next
, struct ib_fmr
, list
);
497 return fmr
->device
->unmap_fmr(fmr_list
);
499 EXPORT_SYMBOL(ib_unmap_fmr
);
501 int ib_dealloc_fmr(struct ib_fmr
*fmr
)
507 ret
= fmr
->device
->dealloc_fmr(fmr
);
509 atomic_dec(&pd
->usecnt
);
513 EXPORT_SYMBOL(ib_dealloc_fmr
);
515 /* Multicast groups */
517 int ib_attach_mcast(struct ib_qp
*qp
, union ib_gid
*gid
, u16 lid
)
519 if (!qp
->device
->attach_mcast
)
521 if (gid
->raw
[0] != 0xff || qp
->qp_type
!= IB_QPT_UD
)
524 return qp
->device
->attach_mcast(qp
, gid
, lid
);
526 EXPORT_SYMBOL(ib_attach_mcast
);
528 int ib_detach_mcast(struct ib_qp
*qp
, union ib_gid
*gid
, u16 lid
)
530 if (!qp
->device
->detach_mcast
)
532 if (gid
->raw
[0] != 0xff || qp
->qp_type
!= IB_QPT_UD
)
535 return qp
->device
->detach_mcast(qp
, gid
, lid
);
537 EXPORT_SYMBOL(ib_detach_mcast
);