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>
44 #include <rdma/ib_verbs.h>
45 #include <rdma/ib_cache.h>
47 /* Protection domains */
49 struct ib_pd *ib_alloc_pd(struct ib_device *device)
53 pd = device->alloc_pd(device, NULL, NULL);
58 atomic_set(&pd->usecnt, 0);
63 EXPORT_SYMBOL(ib_alloc_pd);
65 int ib_dealloc_pd(struct ib_pd *pd)
67 if (atomic_read(&pd->usecnt))
70 return pd->device->dealloc_pd(pd);
72 EXPORT_SYMBOL(ib_dealloc_pd);
76 struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
80 ah = pd->device->create_ah(pd, ah_attr);
83 ah->device = pd->device;
86 atomic_inc(&pd->usecnt);
91 EXPORT_SYMBOL(ib_create_ah);
93 struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc,
94 struct ib_grh *grh, u8 port_num)
96 struct ib_ah_attr ah_attr;
101 memset(&ah_attr, 0, sizeof ah_attr);
102 ah_attr.dlid = wc->slid;
104 ah_attr.src_path_bits = wc->dlid_path_bits;
105 ah_attr.port_num = port_num;
107 if (wc->wc_flags & IB_WC_GRH) {
108 ah_attr.ah_flags = IB_AH_GRH;
109 ah_attr.grh.dgid = grh->dgid;
111 ret = ib_find_cached_gid(pd->device, &grh->sgid, &port_num,
116 ah_attr.grh.sgid_index = (u8) gid_index;
117 flow_class = be32_to_cpu(grh->version_tclass_flow);
118 ah_attr.grh.flow_label = flow_class & 0xFFFFF;
119 ah_attr.grh.traffic_class = (flow_class >> 20) & 0xFF;
120 ah_attr.grh.hop_limit = grh->hop_limit;
123 return ib_create_ah(pd, &ah_attr);
125 EXPORT_SYMBOL(ib_create_ah_from_wc);
127 int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr)
129 return ah->device->modify_ah ?
130 ah->device->modify_ah(ah, ah_attr) :
133 EXPORT_SYMBOL(ib_modify_ah);
135 int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr)
137 return ah->device->query_ah ?
138 ah->device->query_ah(ah, ah_attr) :
141 EXPORT_SYMBOL(ib_query_ah);
143 int ib_destroy_ah(struct ib_ah *ah)
149 ret = ah->device->destroy_ah(ah);
151 atomic_dec(&pd->usecnt);
155 EXPORT_SYMBOL(ib_destroy_ah);
157 /* Shared receive queues */
159 struct ib_srq *ib_create_srq(struct ib_pd *pd,
160 struct ib_srq_init_attr *srq_init_attr)
164 if (!pd->device->create_srq)
165 return ERR_PTR(-ENOSYS);
167 srq = pd->device->create_srq(pd, srq_init_attr, NULL);
170 srq->device = pd->device;
173 srq->event_handler = srq_init_attr->event_handler;
174 srq->srq_context = srq_init_attr->srq_context;
175 atomic_inc(&pd->usecnt);
176 atomic_set(&srq->usecnt, 0);
181 EXPORT_SYMBOL(ib_create_srq);
183 int ib_modify_srq(struct ib_srq *srq,
184 struct ib_srq_attr *srq_attr,
185 enum ib_srq_attr_mask srq_attr_mask)
187 return srq->device->modify_srq(srq, srq_attr, srq_attr_mask);
189 EXPORT_SYMBOL(ib_modify_srq);
191 int ib_query_srq(struct ib_srq *srq,
192 struct ib_srq_attr *srq_attr)
194 return srq->device->query_srq ?
195 srq->device->query_srq(srq, srq_attr) : -ENOSYS;
197 EXPORT_SYMBOL(ib_query_srq);
199 int ib_destroy_srq(struct ib_srq *srq)
204 if (atomic_read(&srq->usecnt))
209 ret = srq->device->destroy_srq(srq);
211 atomic_dec(&pd->usecnt);
215 EXPORT_SYMBOL(ib_destroy_srq);
219 struct ib_qp *ib_create_qp(struct ib_pd *pd,
220 struct ib_qp_init_attr *qp_init_attr)
224 qp = pd->device->create_qp(pd, qp_init_attr, NULL);
227 qp->device = pd->device;
229 qp->send_cq = qp_init_attr->send_cq;
230 qp->recv_cq = qp_init_attr->recv_cq;
231 qp->srq = qp_init_attr->srq;
233 qp->event_handler = qp_init_attr->event_handler;
234 qp->qp_context = qp_init_attr->qp_context;
235 qp->qp_type = qp_init_attr->qp_type;
236 atomic_inc(&pd->usecnt);
237 atomic_inc(&qp_init_attr->send_cq->usecnt);
238 atomic_inc(&qp_init_attr->recv_cq->usecnt);
239 if (qp_init_attr->srq)
240 atomic_inc(&qp_init_attr->srq->usecnt);
245 EXPORT_SYMBOL(ib_create_qp);
247 int ib_modify_qp(struct ib_qp *qp,
248 struct ib_qp_attr *qp_attr,
251 return qp->device->modify_qp(qp, qp_attr, qp_attr_mask);
253 EXPORT_SYMBOL(ib_modify_qp);
255 int ib_query_qp(struct ib_qp *qp,
256 struct ib_qp_attr *qp_attr,
258 struct ib_qp_init_attr *qp_init_attr)
260 return qp->device->query_qp ?
261 qp->device->query_qp(qp, qp_attr, qp_attr_mask, qp_init_attr) :
264 EXPORT_SYMBOL(ib_query_qp);
266 int ib_destroy_qp(struct ib_qp *qp)
269 struct ib_cq *scq, *rcq;
278 ret = qp->device->destroy_qp(qp);
280 atomic_dec(&pd->usecnt);
281 atomic_dec(&scq->usecnt);
282 atomic_dec(&rcq->usecnt);
284 atomic_dec(&srq->usecnt);
289 EXPORT_SYMBOL(ib_destroy_qp);
291 /* Completion queues */
293 struct ib_cq *ib_create_cq(struct ib_device *device,
294 ib_comp_handler comp_handler,
295 void (*event_handler)(struct ib_event *, void *),
296 void *cq_context, int cqe)
300 cq = device->create_cq(device, cqe, NULL, NULL);
305 cq->comp_handler = comp_handler;
306 cq->event_handler = event_handler;
307 cq->cq_context = cq_context;
308 atomic_set(&cq->usecnt, 0);
313 EXPORT_SYMBOL(ib_create_cq);
315 int ib_destroy_cq(struct ib_cq *cq)
317 if (atomic_read(&cq->usecnt))
320 return cq->device->destroy_cq(cq);
322 EXPORT_SYMBOL(ib_destroy_cq);
324 int ib_resize_cq(struct ib_cq *cq,
329 if (!cq->device->resize_cq)
332 ret = cq->device->resize_cq(cq, &cqe);
338 EXPORT_SYMBOL(ib_resize_cq);
342 struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags)
346 mr = pd->device->get_dma_mr(pd, mr_access_flags);
349 mr->device = pd->device;
352 atomic_inc(&pd->usecnt);
353 atomic_set(&mr->usecnt, 0);
358 EXPORT_SYMBOL(ib_get_dma_mr);
360 struct ib_mr *ib_reg_phys_mr(struct ib_pd *pd,
361 struct ib_phys_buf *phys_buf_array,
368 mr = pd->device->reg_phys_mr(pd, phys_buf_array, num_phys_buf,
369 mr_access_flags, iova_start);
372 mr->device = pd->device;
375 atomic_inc(&pd->usecnt);
376 atomic_set(&mr->usecnt, 0);
381 EXPORT_SYMBOL(ib_reg_phys_mr);
383 int ib_rereg_phys_mr(struct ib_mr *mr,
386 struct ib_phys_buf *phys_buf_array,
391 struct ib_pd *old_pd;
394 if (!mr->device->rereg_phys_mr)
397 if (atomic_read(&mr->usecnt))
402 ret = mr->device->rereg_phys_mr(mr, mr_rereg_mask, pd,
403 phys_buf_array, num_phys_buf,
404 mr_access_flags, iova_start);
406 if (!ret && (mr_rereg_mask & IB_MR_REREG_PD)) {
407 atomic_dec(&old_pd->usecnt);
408 atomic_inc(&pd->usecnt);
413 EXPORT_SYMBOL(ib_rereg_phys_mr);
415 int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr)
417 return mr->device->query_mr ?
418 mr->device->query_mr(mr, mr_attr) : -ENOSYS;
420 EXPORT_SYMBOL(ib_query_mr);
422 int ib_dereg_mr(struct ib_mr *mr)
427 if (atomic_read(&mr->usecnt))
431 ret = mr->device->dereg_mr(mr);
433 atomic_dec(&pd->usecnt);
437 EXPORT_SYMBOL(ib_dereg_mr);
441 struct ib_mw *ib_alloc_mw(struct ib_pd *pd)
445 if (!pd->device->alloc_mw)
446 return ERR_PTR(-ENOSYS);
448 mw = pd->device->alloc_mw(pd);
450 mw->device = pd->device;
453 atomic_inc(&pd->usecnt);
458 EXPORT_SYMBOL(ib_alloc_mw);
460 int ib_dealloc_mw(struct ib_mw *mw)
466 ret = mw->device->dealloc_mw(mw);
468 atomic_dec(&pd->usecnt);
472 EXPORT_SYMBOL(ib_dealloc_mw);
474 /* "Fast" memory regions */
476 struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
478 struct ib_fmr_attr *fmr_attr)
482 if (!pd->device->alloc_fmr)
483 return ERR_PTR(-ENOSYS);
485 fmr = pd->device->alloc_fmr(pd, mr_access_flags, fmr_attr);
487 fmr->device = pd->device;
489 atomic_inc(&pd->usecnt);
494 EXPORT_SYMBOL(ib_alloc_fmr);
496 int ib_unmap_fmr(struct list_head *fmr_list)
500 if (list_empty(fmr_list))
503 fmr = list_entry(fmr_list->next, struct ib_fmr, list);
504 return fmr->device->unmap_fmr(fmr_list);
506 EXPORT_SYMBOL(ib_unmap_fmr);
508 int ib_dealloc_fmr(struct ib_fmr *fmr)
514 ret = fmr->device->dealloc_fmr(fmr);
516 atomic_dec(&pd->usecnt);
520 EXPORT_SYMBOL(ib_dealloc_fmr);
522 /* Multicast groups */
524 int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid)
526 return qp->device->attach_mcast ?
527 qp->device->attach_mcast(qp, gid, lid) :
530 EXPORT_SYMBOL(ib_attach_mcast);
532 int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid)
534 return qp->device->detach_mcast ?
535 qp->device->detach_mcast(qp, gid, lid) :
538 EXPORT_SYMBOL(ib_detach_mcast);