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1da177e4 LT |
1 | /* |
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. | |
2a1d9b7f | 7 | * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. |
33b9b3ee | 8 | * Copyright (c) 2005, 2006 Cisco Systems. All rights reserved. |
1da177e4 LT |
9 | * |
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: | |
15 | * | |
16 | * Redistribution and use in source and binary forms, with or | |
17 | * without modification, are permitted provided that the following | |
18 | * conditions are met: | |
19 | * | |
20 | * - Redistributions of source code must retain the above | |
21 | * copyright notice, this list of conditions and the following | |
22 | * disclaimer. | |
23 | * | |
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. | |
28 | * | |
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 | |
36 | * SOFTWARE. | |
1da177e4 LT |
37 | */ |
38 | ||
39 | #include <linux/errno.h> | |
40 | #include <linux/err.h> | |
8c65b4a6 | 41 | #include <linux/string.h> |
1da177e4 | 42 | |
a4d61e84 RD |
43 | #include <rdma/ib_verbs.h> |
44 | #include <rdma/ib_cache.h> | |
1da177e4 | 45 | |
bf6a9e31 JM |
46 | int ib_rate_to_mult(enum ib_rate rate) |
47 | { | |
48 | switch (rate) { | |
49 | case IB_RATE_2_5_GBPS: return 1; | |
50 | case IB_RATE_5_GBPS: return 2; | |
51 | case IB_RATE_10_GBPS: return 4; | |
52 | case IB_RATE_20_GBPS: return 8; | |
53 | case IB_RATE_30_GBPS: return 12; | |
54 | case IB_RATE_40_GBPS: return 16; | |
55 | case IB_RATE_60_GBPS: return 24; | |
56 | case IB_RATE_80_GBPS: return 32; | |
57 | case IB_RATE_120_GBPS: return 48; | |
58 | default: return -1; | |
59 | } | |
60 | } | |
61 | EXPORT_SYMBOL(ib_rate_to_mult); | |
62 | ||
63 | enum ib_rate mult_to_ib_rate(int mult) | |
64 | { | |
65 | switch (mult) { | |
66 | case 1: return IB_RATE_2_5_GBPS; | |
67 | case 2: return IB_RATE_5_GBPS; | |
68 | case 4: return IB_RATE_10_GBPS; | |
69 | case 8: return IB_RATE_20_GBPS; | |
70 | case 12: return IB_RATE_30_GBPS; | |
71 | case 16: return IB_RATE_40_GBPS; | |
72 | case 24: return IB_RATE_60_GBPS; | |
73 | case 32: return IB_RATE_80_GBPS; | |
74 | case 48: return IB_RATE_120_GBPS; | |
75 | default: return IB_RATE_PORT_CURRENT; | |
76 | } | |
77 | } | |
78 | EXPORT_SYMBOL(mult_to_ib_rate); | |
79 | ||
07ebafba TT |
80 | enum rdma_transport_type |
81 | rdma_node_get_transport(enum rdma_node_type node_type) | |
82 | { | |
83 | switch (node_type) { | |
84 | case RDMA_NODE_IB_CA: | |
85 | case RDMA_NODE_IB_SWITCH: | |
86 | case RDMA_NODE_IB_ROUTER: | |
87 | return RDMA_TRANSPORT_IB; | |
88 | case RDMA_NODE_RNIC: | |
89 | return RDMA_TRANSPORT_IWARP; | |
90 | default: | |
91 | BUG(); | |
92 | return 0; | |
93 | } | |
94 | } | |
95 | EXPORT_SYMBOL(rdma_node_get_transport); | |
96 | ||
a3f5adaf EC |
97 | enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device, u8 port_num) |
98 | { | |
99 | if (device->get_link_layer) | |
100 | return device->get_link_layer(device, port_num); | |
101 | ||
102 | switch (rdma_node_get_transport(device->node_type)) { | |
103 | case RDMA_TRANSPORT_IB: | |
104 | return IB_LINK_LAYER_INFINIBAND; | |
105 | case RDMA_TRANSPORT_IWARP: | |
106 | return IB_LINK_LAYER_ETHERNET; | |
107 | default: | |
108 | return IB_LINK_LAYER_UNSPECIFIED; | |
109 | } | |
110 | } | |
111 | EXPORT_SYMBOL(rdma_port_get_link_layer); | |
112 | ||
1da177e4 LT |
113 | /* Protection domains */ |
114 | ||
115 | struct ib_pd *ib_alloc_pd(struct ib_device *device) | |
116 | { | |
117 | struct ib_pd *pd; | |
118 | ||
b5e81bf5 | 119 | pd = device->alloc_pd(device, NULL, NULL); |
1da177e4 LT |
120 | |
121 | if (!IS_ERR(pd)) { | |
b5e81bf5 RD |
122 | pd->device = device; |
123 | pd->uobject = NULL; | |
1da177e4 LT |
124 | atomic_set(&pd->usecnt, 0); |
125 | } | |
126 | ||
127 | return pd; | |
128 | } | |
129 | EXPORT_SYMBOL(ib_alloc_pd); | |
130 | ||
131 | int ib_dealloc_pd(struct ib_pd *pd) | |
132 | { | |
133 | if (atomic_read(&pd->usecnt)) | |
134 | return -EBUSY; | |
135 | ||
136 | return pd->device->dealloc_pd(pd); | |
137 | } | |
138 | EXPORT_SYMBOL(ib_dealloc_pd); | |
139 | ||
140 | /* Address handles */ | |
141 | ||
142 | struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr) | |
143 | { | |
144 | struct ib_ah *ah; | |
145 | ||
146 | ah = pd->device->create_ah(pd, ah_attr); | |
147 | ||
148 | if (!IS_ERR(ah)) { | |
b5e81bf5 RD |
149 | ah->device = pd->device; |
150 | ah->pd = pd; | |
151 | ah->uobject = NULL; | |
1da177e4 LT |
152 | atomic_inc(&pd->usecnt); |
153 | } | |
154 | ||
155 | return ah; | |
156 | } | |
157 | EXPORT_SYMBOL(ib_create_ah); | |
158 | ||
4e00d694 SH |
159 | int ib_init_ah_from_wc(struct ib_device *device, u8 port_num, struct ib_wc *wc, |
160 | struct ib_grh *grh, struct ib_ah_attr *ah_attr) | |
513789ed | 161 | { |
513789ed HR |
162 | u32 flow_class; |
163 | u16 gid_index; | |
164 | int ret; | |
165 | ||
4e00d694 SH |
166 | memset(ah_attr, 0, sizeof *ah_attr); |
167 | ah_attr->dlid = wc->slid; | |
168 | ah_attr->sl = wc->sl; | |
169 | ah_attr->src_path_bits = wc->dlid_path_bits; | |
170 | ah_attr->port_num = port_num; | |
513789ed HR |
171 | |
172 | if (wc->wc_flags & IB_WC_GRH) { | |
4e00d694 SH |
173 | ah_attr->ah_flags = IB_AH_GRH; |
174 | ah_attr->grh.dgid = grh->sgid; | |
513789ed | 175 | |
4e00d694 | 176 | ret = ib_find_cached_gid(device, &grh->dgid, &port_num, |
513789ed HR |
177 | &gid_index); |
178 | if (ret) | |
4e00d694 | 179 | return ret; |
513789ed | 180 | |
4e00d694 | 181 | ah_attr->grh.sgid_index = (u8) gid_index; |
497677ab | 182 | flow_class = be32_to_cpu(grh->version_tclass_flow); |
4e00d694 | 183 | ah_attr->grh.flow_label = flow_class & 0xFFFFF; |
47645d8d | 184 | ah_attr->grh.hop_limit = 0xFF; |
4e00d694 | 185 | ah_attr->grh.traffic_class = (flow_class >> 20) & 0xFF; |
513789ed | 186 | } |
4e00d694 SH |
187 | return 0; |
188 | } | |
189 | EXPORT_SYMBOL(ib_init_ah_from_wc); | |
190 | ||
191 | struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc, | |
192 | struct ib_grh *grh, u8 port_num) | |
193 | { | |
194 | struct ib_ah_attr ah_attr; | |
195 | int ret; | |
196 | ||
197 | ret = ib_init_ah_from_wc(pd->device, port_num, wc, grh, &ah_attr); | |
198 | if (ret) | |
199 | return ERR_PTR(ret); | |
513789ed HR |
200 | |
201 | return ib_create_ah(pd, &ah_attr); | |
202 | } | |
203 | EXPORT_SYMBOL(ib_create_ah_from_wc); | |
204 | ||
1da177e4 LT |
205 | int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr) |
206 | { | |
207 | return ah->device->modify_ah ? | |
208 | ah->device->modify_ah(ah, ah_attr) : | |
209 | -ENOSYS; | |
210 | } | |
211 | EXPORT_SYMBOL(ib_modify_ah); | |
212 | ||
213 | int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr) | |
214 | { | |
215 | return ah->device->query_ah ? | |
216 | ah->device->query_ah(ah, ah_attr) : | |
217 | -ENOSYS; | |
218 | } | |
219 | EXPORT_SYMBOL(ib_query_ah); | |
220 | ||
221 | int ib_destroy_ah(struct ib_ah *ah) | |
222 | { | |
223 | struct ib_pd *pd; | |
224 | int ret; | |
225 | ||
226 | pd = ah->pd; | |
227 | ret = ah->device->destroy_ah(ah); | |
228 | if (!ret) | |
229 | atomic_dec(&pd->usecnt); | |
230 | ||
231 | return ret; | |
232 | } | |
233 | EXPORT_SYMBOL(ib_destroy_ah); | |
234 | ||
d41fcc67 RD |
235 | /* Shared receive queues */ |
236 | ||
237 | struct ib_srq *ib_create_srq(struct ib_pd *pd, | |
238 | struct ib_srq_init_attr *srq_init_attr) | |
239 | { | |
240 | struct ib_srq *srq; | |
241 | ||
242 | if (!pd->device->create_srq) | |
243 | return ERR_PTR(-ENOSYS); | |
244 | ||
245 | srq = pd->device->create_srq(pd, srq_init_attr, NULL); | |
246 | ||
247 | if (!IS_ERR(srq)) { | |
248 | srq->device = pd->device; | |
249 | srq->pd = pd; | |
250 | srq->uobject = NULL; | |
251 | srq->event_handler = srq_init_attr->event_handler; | |
252 | srq->srq_context = srq_init_attr->srq_context; | |
96104eda | 253 | srq->srq_type = srq_init_attr->srq_type; |
418d5130 SH |
254 | if (srq->srq_type == IB_SRQT_XRC) { |
255 | srq->ext.xrc.xrcd = srq_init_attr->ext.xrc.xrcd; | |
256 | srq->ext.xrc.cq = srq_init_attr->ext.xrc.cq; | |
257 | atomic_inc(&srq->ext.xrc.xrcd->usecnt); | |
258 | atomic_inc(&srq->ext.xrc.cq->usecnt); | |
259 | } | |
d41fcc67 RD |
260 | atomic_inc(&pd->usecnt); |
261 | atomic_set(&srq->usecnt, 0); | |
262 | } | |
263 | ||
264 | return srq; | |
265 | } | |
266 | EXPORT_SYMBOL(ib_create_srq); | |
267 | ||
268 | int ib_modify_srq(struct ib_srq *srq, | |
269 | struct ib_srq_attr *srq_attr, | |
270 | enum ib_srq_attr_mask srq_attr_mask) | |
271 | { | |
7ce5eacb DB |
272 | return srq->device->modify_srq ? |
273 | srq->device->modify_srq(srq, srq_attr, srq_attr_mask, NULL) : | |
274 | -ENOSYS; | |
d41fcc67 RD |
275 | } |
276 | EXPORT_SYMBOL(ib_modify_srq); | |
277 | ||
278 | int ib_query_srq(struct ib_srq *srq, | |
279 | struct ib_srq_attr *srq_attr) | |
280 | { | |
281 | return srq->device->query_srq ? | |
282 | srq->device->query_srq(srq, srq_attr) : -ENOSYS; | |
283 | } | |
284 | EXPORT_SYMBOL(ib_query_srq); | |
285 | ||
286 | int ib_destroy_srq(struct ib_srq *srq) | |
287 | { | |
288 | struct ib_pd *pd; | |
418d5130 SH |
289 | enum ib_srq_type srq_type; |
290 | struct ib_xrcd *uninitialized_var(xrcd); | |
291 | struct ib_cq *uninitialized_var(cq); | |
d41fcc67 RD |
292 | int ret; |
293 | ||
294 | if (atomic_read(&srq->usecnt)) | |
295 | return -EBUSY; | |
296 | ||
297 | pd = srq->pd; | |
418d5130 SH |
298 | srq_type = srq->srq_type; |
299 | if (srq_type == IB_SRQT_XRC) { | |
300 | xrcd = srq->ext.xrc.xrcd; | |
301 | cq = srq->ext.xrc.cq; | |
302 | } | |
d41fcc67 RD |
303 | |
304 | ret = srq->device->destroy_srq(srq); | |
418d5130 | 305 | if (!ret) { |
d41fcc67 | 306 | atomic_dec(&pd->usecnt); |
418d5130 SH |
307 | if (srq_type == IB_SRQT_XRC) { |
308 | atomic_dec(&xrcd->usecnt); | |
309 | atomic_dec(&cq->usecnt); | |
310 | } | |
311 | } | |
d41fcc67 RD |
312 | |
313 | return ret; | |
314 | } | |
315 | EXPORT_SYMBOL(ib_destroy_srq); | |
316 | ||
1da177e4 LT |
317 | /* Queue pairs */ |
318 | ||
d3d72d90 SH |
319 | static void __ib_insert_xrcd_qp(struct ib_xrcd *xrcd, struct ib_qp *qp) |
320 | { | |
321 | mutex_lock(&xrcd->tgt_qp_mutex); | |
322 | list_add(&qp->xrcd_list, &xrcd->tgt_qp_list); | |
323 | mutex_unlock(&xrcd->tgt_qp_mutex); | |
324 | } | |
325 | ||
326 | static void __ib_remove_xrcd_qp(struct ib_xrcd *xrcd, struct ib_qp *qp) | |
327 | { | |
328 | mutex_lock(&xrcd->tgt_qp_mutex); | |
329 | list_del(&qp->xrcd_list); | |
330 | mutex_unlock(&xrcd->tgt_qp_mutex); | |
331 | } | |
332 | ||
1da177e4 LT |
333 | struct ib_qp *ib_create_qp(struct ib_pd *pd, |
334 | struct ib_qp_init_attr *qp_init_attr) | |
335 | { | |
336 | struct ib_qp *qp; | |
b42b63cf | 337 | struct ib_device *device; |
1da177e4 | 338 | |
b42b63cf SH |
339 | device = pd ? pd->device : qp_init_attr->xrcd->device; |
340 | qp = device->create_qp(pd, qp_init_attr, NULL); | |
1da177e4 LT |
341 | |
342 | if (!IS_ERR(qp)) { | |
b42b63cf SH |
343 | qp->device = device; |
344 | ||
345 | if (qp_init_attr->qp_type == IB_QPT_XRC_TGT) { | |
346 | qp->pd = NULL; | |
347 | qp->send_cq = qp->recv_cq = NULL; | |
348 | qp->srq = NULL; | |
349 | qp->xrcd = qp_init_attr->xrcd; | |
350 | atomic_inc(&qp_init_attr->xrcd->usecnt); | |
d3d72d90 | 351 | __ib_insert_xrcd_qp(qp_init_attr->xrcd, qp); |
b42b63cf SH |
352 | } else { |
353 | if (qp_init_attr->qp_type == IB_QPT_XRC_INI) { | |
354 | qp->recv_cq = NULL; | |
355 | qp->srq = NULL; | |
356 | } else { | |
357 | qp->recv_cq = qp_init_attr->recv_cq; | |
358 | atomic_inc(&qp_init_attr->recv_cq->usecnt); | |
359 | qp->srq = qp_init_attr->srq; | |
360 | if (qp->srq) | |
361 | atomic_inc(&qp_init_attr->srq->usecnt); | |
362 | } | |
363 | ||
364 | qp->pd = pd; | |
365 | qp->send_cq = qp_init_attr->send_cq; | |
366 | qp->xrcd = NULL; | |
367 | ||
368 | atomic_inc(&pd->usecnt); | |
369 | atomic_inc(&qp_init_attr->send_cq->usecnt); | |
370 | } | |
371 | ||
b5e81bf5 | 372 | qp->uobject = NULL; |
1da177e4 LT |
373 | qp->event_handler = qp_init_attr->event_handler; |
374 | qp->qp_context = qp_init_attr->qp_context; | |
375 | qp->qp_type = qp_init_attr->qp_type; | |
1da177e4 LT |
376 | } |
377 | ||
378 | return qp; | |
379 | } | |
380 | EXPORT_SYMBOL(ib_create_qp); | |
381 | ||
8a51866f RD |
382 | static const struct { |
383 | int valid; | |
b42b63cf SH |
384 | enum ib_qp_attr_mask req_param[IB_QPT_MAX]; |
385 | enum ib_qp_attr_mask opt_param[IB_QPT_MAX]; | |
8a51866f RD |
386 | } qp_state_table[IB_QPS_ERR + 1][IB_QPS_ERR + 1] = { |
387 | [IB_QPS_RESET] = { | |
388 | [IB_QPS_RESET] = { .valid = 1 }, | |
8a51866f RD |
389 | [IB_QPS_INIT] = { |
390 | .valid = 1, | |
391 | .req_param = { | |
392 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | | |
393 | IB_QP_PORT | | |
394 | IB_QP_QKEY), | |
395 | [IB_QPT_UC] = (IB_QP_PKEY_INDEX | | |
396 | IB_QP_PORT | | |
397 | IB_QP_ACCESS_FLAGS), | |
398 | [IB_QPT_RC] = (IB_QP_PKEY_INDEX | | |
399 | IB_QP_PORT | | |
400 | IB_QP_ACCESS_FLAGS), | |
b42b63cf SH |
401 | [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX | |
402 | IB_QP_PORT | | |
403 | IB_QP_ACCESS_FLAGS), | |
404 | [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX | | |
405 | IB_QP_PORT | | |
406 | IB_QP_ACCESS_FLAGS), | |
8a51866f RD |
407 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | |
408 | IB_QP_QKEY), | |
409 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | | |
410 | IB_QP_QKEY), | |
411 | } | |
412 | }, | |
413 | }, | |
414 | [IB_QPS_INIT] = { | |
415 | [IB_QPS_RESET] = { .valid = 1 }, | |
416 | [IB_QPS_ERR] = { .valid = 1 }, | |
417 | [IB_QPS_INIT] = { | |
418 | .valid = 1, | |
419 | .opt_param = { | |
420 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | | |
421 | IB_QP_PORT | | |
422 | IB_QP_QKEY), | |
423 | [IB_QPT_UC] = (IB_QP_PKEY_INDEX | | |
424 | IB_QP_PORT | | |
425 | IB_QP_ACCESS_FLAGS), | |
426 | [IB_QPT_RC] = (IB_QP_PKEY_INDEX | | |
427 | IB_QP_PORT | | |
428 | IB_QP_ACCESS_FLAGS), | |
b42b63cf SH |
429 | [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX | |
430 | IB_QP_PORT | | |
431 | IB_QP_ACCESS_FLAGS), | |
432 | [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX | | |
433 | IB_QP_PORT | | |
434 | IB_QP_ACCESS_FLAGS), | |
8a51866f RD |
435 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | |
436 | IB_QP_QKEY), | |
437 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | | |
438 | IB_QP_QKEY), | |
439 | } | |
440 | }, | |
441 | [IB_QPS_RTR] = { | |
442 | .valid = 1, | |
443 | .req_param = { | |
444 | [IB_QPT_UC] = (IB_QP_AV | | |
445 | IB_QP_PATH_MTU | | |
446 | IB_QP_DEST_QPN | | |
447 | IB_QP_RQ_PSN), | |
448 | [IB_QPT_RC] = (IB_QP_AV | | |
449 | IB_QP_PATH_MTU | | |
450 | IB_QP_DEST_QPN | | |
451 | IB_QP_RQ_PSN | | |
452 | IB_QP_MAX_DEST_RD_ATOMIC | | |
453 | IB_QP_MIN_RNR_TIMER), | |
b42b63cf SH |
454 | [IB_QPT_XRC_INI] = (IB_QP_AV | |
455 | IB_QP_PATH_MTU | | |
456 | IB_QP_DEST_QPN | | |
457 | IB_QP_RQ_PSN), | |
458 | [IB_QPT_XRC_TGT] = (IB_QP_AV | | |
459 | IB_QP_PATH_MTU | | |
460 | IB_QP_DEST_QPN | | |
461 | IB_QP_RQ_PSN | | |
462 | IB_QP_MAX_DEST_RD_ATOMIC | | |
463 | IB_QP_MIN_RNR_TIMER), | |
8a51866f RD |
464 | }, |
465 | .opt_param = { | |
466 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | | |
467 | IB_QP_QKEY), | |
468 | [IB_QPT_UC] = (IB_QP_ALT_PATH | | |
469 | IB_QP_ACCESS_FLAGS | | |
470 | IB_QP_PKEY_INDEX), | |
471 | [IB_QPT_RC] = (IB_QP_ALT_PATH | | |
472 | IB_QP_ACCESS_FLAGS | | |
473 | IB_QP_PKEY_INDEX), | |
b42b63cf SH |
474 | [IB_QPT_XRC_INI] = (IB_QP_ALT_PATH | |
475 | IB_QP_ACCESS_FLAGS | | |
476 | IB_QP_PKEY_INDEX), | |
477 | [IB_QPT_XRC_TGT] = (IB_QP_ALT_PATH | | |
478 | IB_QP_ACCESS_FLAGS | | |
479 | IB_QP_PKEY_INDEX), | |
8a51866f RD |
480 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | |
481 | IB_QP_QKEY), | |
482 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | | |
483 | IB_QP_QKEY), | |
484 | } | |
485 | } | |
486 | }, | |
487 | [IB_QPS_RTR] = { | |
488 | [IB_QPS_RESET] = { .valid = 1 }, | |
489 | [IB_QPS_ERR] = { .valid = 1 }, | |
490 | [IB_QPS_RTS] = { | |
491 | .valid = 1, | |
492 | .req_param = { | |
493 | [IB_QPT_UD] = IB_QP_SQ_PSN, | |
494 | [IB_QPT_UC] = IB_QP_SQ_PSN, | |
495 | [IB_QPT_RC] = (IB_QP_TIMEOUT | | |
496 | IB_QP_RETRY_CNT | | |
497 | IB_QP_RNR_RETRY | | |
498 | IB_QP_SQ_PSN | | |
499 | IB_QP_MAX_QP_RD_ATOMIC), | |
b42b63cf SH |
500 | [IB_QPT_XRC_INI] = (IB_QP_TIMEOUT | |
501 | IB_QP_RETRY_CNT | | |
502 | IB_QP_RNR_RETRY | | |
503 | IB_QP_SQ_PSN | | |
504 | IB_QP_MAX_QP_RD_ATOMIC), | |
505 | [IB_QPT_XRC_TGT] = (IB_QP_TIMEOUT | | |
506 | IB_QP_SQ_PSN), | |
8a51866f RD |
507 | [IB_QPT_SMI] = IB_QP_SQ_PSN, |
508 | [IB_QPT_GSI] = IB_QP_SQ_PSN, | |
509 | }, | |
510 | .opt_param = { | |
511 | [IB_QPT_UD] = (IB_QP_CUR_STATE | | |
512 | IB_QP_QKEY), | |
513 | [IB_QPT_UC] = (IB_QP_CUR_STATE | | |
514 | IB_QP_ALT_PATH | | |
515 | IB_QP_ACCESS_FLAGS | | |
516 | IB_QP_PATH_MIG_STATE), | |
517 | [IB_QPT_RC] = (IB_QP_CUR_STATE | | |
518 | IB_QP_ALT_PATH | | |
519 | IB_QP_ACCESS_FLAGS | | |
520 | IB_QP_MIN_RNR_TIMER | | |
521 | IB_QP_PATH_MIG_STATE), | |
b42b63cf SH |
522 | [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | |
523 | IB_QP_ALT_PATH | | |
524 | IB_QP_ACCESS_FLAGS | | |
525 | IB_QP_PATH_MIG_STATE), | |
526 | [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | | |
527 | IB_QP_ALT_PATH | | |
528 | IB_QP_ACCESS_FLAGS | | |
529 | IB_QP_MIN_RNR_TIMER | | |
530 | IB_QP_PATH_MIG_STATE), | |
8a51866f RD |
531 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | |
532 | IB_QP_QKEY), | |
533 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | | |
534 | IB_QP_QKEY), | |
535 | } | |
536 | } | |
537 | }, | |
538 | [IB_QPS_RTS] = { | |
539 | [IB_QPS_RESET] = { .valid = 1 }, | |
540 | [IB_QPS_ERR] = { .valid = 1 }, | |
541 | [IB_QPS_RTS] = { | |
542 | .valid = 1, | |
543 | .opt_param = { | |
544 | [IB_QPT_UD] = (IB_QP_CUR_STATE | | |
545 | IB_QP_QKEY), | |
4546d31d DB |
546 | [IB_QPT_UC] = (IB_QP_CUR_STATE | |
547 | IB_QP_ACCESS_FLAGS | | |
8a51866f RD |
548 | IB_QP_ALT_PATH | |
549 | IB_QP_PATH_MIG_STATE), | |
4546d31d DB |
550 | [IB_QPT_RC] = (IB_QP_CUR_STATE | |
551 | IB_QP_ACCESS_FLAGS | | |
8a51866f RD |
552 | IB_QP_ALT_PATH | |
553 | IB_QP_PATH_MIG_STATE | | |
554 | IB_QP_MIN_RNR_TIMER), | |
b42b63cf SH |
555 | [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | |
556 | IB_QP_ACCESS_FLAGS | | |
557 | IB_QP_ALT_PATH | | |
558 | IB_QP_PATH_MIG_STATE), | |
559 | [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | | |
560 | IB_QP_ACCESS_FLAGS | | |
561 | IB_QP_ALT_PATH | | |
562 | IB_QP_PATH_MIG_STATE | | |
563 | IB_QP_MIN_RNR_TIMER), | |
8a51866f RD |
564 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | |
565 | IB_QP_QKEY), | |
566 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | | |
567 | IB_QP_QKEY), | |
568 | } | |
569 | }, | |
570 | [IB_QPS_SQD] = { | |
571 | .valid = 1, | |
572 | .opt_param = { | |
573 | [IB_QPT_UD] = IB_QP_EN_SQD_ASYNC_NOTIFY, | |
574 | [IB_QPT_UC] = IB_QP_EN_SQD_ASYNC_NOTIFY, | |
575 | [IB_QPT_RC] = IB_QP_EN_SQD_ASYNC_NOTIFY, | |
b42b63cf SH |
576 | [IB_QPT_XRC_INI] = IB_QP_EN_SQD_ASYNC_NOTIFY, |
577 | [IB_QPT_XRC_TGT] = IB_QP_EN_SQD_ASYNC_NOTIFY, /* ??? */ | |
8a51866f RD |
578 | [IB_QPT_SMI] = IB_QP_EN_SQD_ASYNC_NOTIFY, |
579 | [IB_QPT_GSI] = IB_QP_EN_SQD_ASYNC_NOTIFY | |
580 | } | |
581 | }, | |
582 | }, | |
583 | [IB_QPS_SQD] = { | |
584 | [IB_QPS_RESET] = { .valid = 1 }, | |
585 | [IB_QPS_ERR] = { .valid = 1 }, | |
586 | [IB_QPS_RTS] = { | |
587 | .valid = 1, | |
588 | .opt_param = { | |
589 | [IB_QPT_UD] = (IB_QP_CUR_STATE | | |
590 | IB_QP_QKEY), | |
591 | [IB_QPT_UC] = (IB_QP_CUR_STATE | | |
592 | IB_QP_ALT_PATH | | |
593 | IB_QP_ACCESS_FLAGS | | |
594 | IB_QP_PATH_MIG_STATE), | |
595 | [IB_QPT_RC] = (IB_QP_CUR_STATE | | |
596 | IB_QP_ALT_PATH | | |
597 | IB_QP_ACCESS_FLAGS | | |
598 | IB_QP_MIN_RNR_TIMER | | |
599 | IB_QP_PATH_MIG_STATE), | |
b42b63cf SH |
600 | [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | |
601 | IB_QP_ALT_PATH | | |
602 | IB_QP_ACCESS_FLAGS | | |
603 | IB_QP_PATH_MIG_STATE), | |
604 | [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | | |
605 | IB_QP_ALT_PATH | | |
606 | IB_QP_ACCESS_FLAGS | | |
607 | IB_QP_MIN_RNR_TIMER | | |
608 | IB_QP_PATH_MIG_STATE), | |
8a51866f RD |
609 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | |
610 | IB_QP_QKEY), | |
611 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | | |
612 | IB_QP_QKEY), | |
613 | } | |
614 | }, | |
615 | [IB_QPS_SQD] = { | |
616 | .valid = 1, | |
617 | .opt_param = { | |
618 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | | |
619 | IB_QP_QKEY), | |
620 | [IB_QPT_UC] = (IB_QP_AV | | |
8a51866f RD |
621 | IB_QP_ALT_PATH | |
622 | IB_QP_ACCESS_FLAGS | | |
623 | IB_QP_PKEY_INDEX | | |
624 | IB_QP_PATH_MIG_STATE), | |
625 | [IB_QPT_RC] = (IB_QP_PORT | | |
626 | IB_QP_AV | | |
627 | IB_QP_TIMEOUT | | |
628 | IB_QP_RETRY_CNT | | |
629 | IB_QP_RNR_RETRY | | |
630 | IB_QP_MAX_QP_RD_ATOMIC | | |
631 | IB_QP_MAX_DEST_RD_ATOMIC | | |
8a51866f RD |
632 | IB_QP_ALT_PATH | |
633 | IB_QP_ACCESS_FLAGS | | |
634 | IB_QP_PKEY_INDEX | | |
635 | IB_QP_MIN_RNR_TIMER | | |
636 | IB_QP_PATH_MIG_STATE), | |
b42b63cf SH |
637 | [IB_QPT_XRC_INI] = (IB_QP_PORT | |
638 | IB_QP_AV | | |
639 | IB_QP_TIMEOUT | | |
640 | IB_QP_RETRY_CNT | | |
641 | IB_QP_RNR_RETRY | | |
642 | IB_QP_MAX_QP_RD_ATOMIC | | |
643 | IB_QP_ALT_PATH | | |
644 | IB_QP_ACCESS_FLAGS | | |
645 | IB_QP_PKEY_INDEX | | |
646 | IB_QP_PATH_MIG_STATE), | |
647 | [IB_QPT_XRC_TGT] = (IB_QP_PORT | | |
648 | IB_QP_AV | | |
649 | IB_QP_TIMEOUT | | |
650 | IB_QP_MAX_DEST_RD_ATOMIC | | |
651 | IB_QP_ALT_PATH | | |
652 | IB_QP_ACCESS_FLAGS | | |
653 | IB_QP_PKEY_INDEX | | |
654 | IB_QP_MIN_RNR_TIMER | | |
655 | IB_QP_PATH_MIG_STATE), | |
8a51866f RD |
656 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | |
657 | IB_QP_QKEY), | |
658 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | | |
659 | IB_QP_QKEY), | |
660 | } | |
661 | } | |
662 | }, | |
663 | [IB_QPS_SQE] = { | |
664 | [IB_QPS_RESET] = { .valid = 1 }, | |
665 | [IB_QPS_ERR] = { .valid = 1 }, | |
666 | [IB_QPS_RTS] = { | |
667 | .valid = 1, | |
668 | .opt_param = { | |
669 | [IB_QPT_UD] = (IB_QP_CUR_STATE | | |
670 | IB_QP_QKEY), | |
671 | [IB_QPT_UC] = (IB_QP_CUR_STATE | | |
672 | IB_QP_ACCESS_FLAGS), | |
673 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | | |
674 | IB_QP_QKEY), | |
675 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | | |
676 | IB_QP_QKEY), | |
677 | } | |
678 | } | |
679 | }, | |
680 | [IB_QPS_ERR] = { | |
681 | [IB_QPS_RESET] = { .valid = 1 }, | |
682 | [IB_QPS_ERR] = { .valid = 1 } | |
683 | } | |
684 | }; | |
685 | ||
686 | int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state, | |
687 | enum ib_qp_type type, enum ib_qp_attr_mask mask) | |
688 | { | |
689 | enum ib_qp_attr_mask req_param, opt_param; | |
690 | ||
691 | if (cur_state < 0 || cur_state > IB_QPS_ERR || | |
692 | next_state < 0 || next_state > IB_QPS_ERR) | |
693 | return 0; | |
694 | ||
695 | if (mask & IB_QP_CUR_STATE && | |
696 | cur_state != IB_QPS_RTR && cur_state != IB_QPS_RTS && | |
697 | cur_state != IB_QPS_SQD && cur_state != IB_QPS_SQE) | |
698 | return 0; | |
699 | ||
700 | if (!qp_state_table[cur_state][next_state].valid) | |
701 | return 0; | |
702 | ||
703 | req_param = qp_state_table[cur_state][next_state].req_param[type]; | |
704 | opt_param = qp_state_table[cur_state][next_state].opt_param[type]; | |
705 | ||
706 | if ((mask & req_param) != req_param) | |
707 | return 0; | |
708 | ||
709 | if (mask & ~(req_param | opt_param | IB_QP_STATE)) | |
710 | return 0; | |
711 | ||
712 | return 1; | |
713 | } | |
714 | EXPORT_SYMBOL(ib_modify_qp_is_ok); | |
715 | ||
1da177e4 LT |
716 | int ib_modify_qp(struct ib_qp *qp, |
717 | struct ib_qp_attr *qp_attr, | |
718 | int qp_attr_mask) | |
719 | { | |
9bc57e2d | 720 | return qp->device->modify_qp(qp, qp_attr, qp_attr_mask, NULL); |
1da177e4 LT |
721 | } |
722 | EXPORT_SYMBOL(ib_modify_qp); | |
723 | ||
724 | int ib_query_qp(struct ib_qp *qp, | |
725 | struct ib_qp_attr *qp_attr, | |
726 | int qp_attr_mask, | |
727 | struct ib_qp_init_attr *qp_init_attr) | |
728 | { | |
729 | return qp->device->query_qp ? | |
730 | qp->device->query_qp(qp, qp_attr, qp_attr_mask, qp_init_attr) : | |
731 | -ENOSYS; | |
732 | } | |
733 | EXPORT_SYMBOL(ib_query_qp); | |
734 | ||
735 | int ib_destroy_qp(struct ib_qp *qp) | |
736 | { | |
737 | struct ib_pd *pd; | |
738 | struct ib_cq *scq, *rcq; | |
739 | struct ib_srq *srq; | |
b42b63cf | 740 | struct ib_xrcd *xrcd; |
1da177e4 LT |
741 | int ret; |
742 | ||
b42b63cf SH |
743 | pd = qp->pd; |
744 | scq = qp->send_cq; | |
745 | rcq = qp->recv_cq; | |
746 | srq = qp->srq; | |
747 | xrcd = qp->xrcd; | |
d3d72d90 SH |
748 | if (xrcd) |
749 | __ib_remove_xrcd_qp(xrcd, qp); | |
1da177e4 LT |
750 | |
751 | ret = qp->device->destroy_qp(qp); | |
752 | if (!ret) { | |
b42b63cf SH |
753 | if (pd) |
754 | atomic_dec(&pd->usecnt); | |
755 | if (scq) | |
756 | atomic_dec(&scq->usecnt); | |
757 | if (rcq) | |
758 | atomic_dec(&rcq->usecnt); | |
1da177e4 LT |
759 | if (srq) |
760 | atomic_dec(&srq->usecnt); | |
b42b63cf SH |
761 | if (xrcd) |
762 | atomic_dec(&xrcd->usecnt); | |
d3d72d90 SH |
763 | } else if (xrcd) { |
764 | __ib_insert_xrcd_qp(xrcd, qp); | |
1da177e4 LT |
765 | } |
766 | ||
767 | return ret; | |
768 | } | |
769 | EXPORT_SYMBOL(ib_destroy_qp); | |
770 | ||
d3d72d90 SH |
771 | int ib_release_qp(struct ib_qp *qp) |
772 | { | |
773 | unsigned long flags; | |
774 | ||
775 | if (qp->qp_type != IB_QPT_XRC_TGT) | |
776 | return -EINVAL; | |
777 | ||
778 | spin_lock_irqsave(&qp->device->event_handler_lock, flags); | |
779 | qp->event_handler = NULL; | |
780 | spin_unlock_irqrestore(&qp->device->event_handler_lock, flags); | |
781 | ||
782 | atomic_dec(&qp->xrcd->usecnt); | |
783 | return 0; | |
784 | } | |
785 | EXPORT_SYMBOL(ib_release_qp); | |
786 | ||
1da177e4 LT |
787 | /* Completion queues */ |
788 | ||
789 | struct ib_cq *ib_create_cq(struct ib_device *device, | |
790 | ib_comp_handler comp_handler, | |
791 | void (*event_handler)(struct ib_event *, void *), | |
f4fd0b22 | 792 | void *cq_context, int cqe, int comp_vector) |
1da177e4 LT |
793 | { |
794 | struct ib_cq *cq; | |
795 | ||
f4fd0b22 | 796 | cq = device->create_cq(device, cqe, comp_vector, NULL, NULL); |
1da177e4 LT |
797 | |
798 | if (!IS_ERR(cq)) { | |
799 | cq->device = device; | |
b5e81bf5 | 800 | cq->uobject = NULL; |
1da177e4 LT |
801 | cq->comp_handler = comp_handler; |
802 | cq->event_handler = event_handler; | |
803 | cq->cq_context = cq_context; | |
804 | atomic_set(&cq->usecnt, 0); | |
805 | } | |
806 | ||
807 | return cq; | |
808 | } | |
809 | EXPORT_SYMBOL(ib_create_cq); | |
810 | ||
2dd57162 EC |
811 | int ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period) |
812 | { | |
813 | return cq->device->modify_cq ? | |
814 | cq->device->modify_cq(cq, cq_count, cq_period) : -ENOSYS; | |
815 | } | |
816 | EXPORT_SYMBOL(ib_modify_cq); | |
817 | ||
1da177e4 LT |
818 | int ib_destroy_cq(struct ib_cq *cq) |
819 | { | |
820 | if (atomic_read(&cq->usecnt)) | |
821 | return -EBUSY; | |
822 | ||
823 | return cq->device->destroy_cq(cq); | |
824 | } | |
825 | EXPORT_SYMBOL(ib_destroy_cq); | |
826 | ||
a74cd4af | 827 | int ib_resize_cq(struct ib_cq *cq, int cqe) |
1da177e4 | 828 | { |
40de2e54 | 829 | return cq->device->resize_cq ? |
33b9b3ee | 830 | cq->device->resize_cq(cq, cqe, NULL) : -ENOSYS; |
1da177e4 LT |
831 | } |
832 | EXPORT_SYMBOL(ib_resize_cq); | |
833 | ||
834 | /* Memory regions */ | |
835 | ||
836 | struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags) | |
837 | { | |
838 | struct ib_mr *mr; | |
839 | ||
840 | mr = pd->device->get_dma_mr(pd, mr_access_flags); | |
841 | ||
842 | if (!IS_ERR(mr)) { | |
b5e81bf5 RD |
843 | mr->device = pd->device; |
844 | mr->pd = pd; | |
845 | mr->uobject = NULL; | |
1da177e4 LT |
846 | atomic_inc(&pd->usecnt); |
847 | atomic_set(&mr->usecnt, 0); | |
848 | } | |
849 | ||
850 | return mr; | |
851 | } | |
852 | EXPORT_SYMBOL(ib_get_dma_mr); | |
853 | ||
854 | struct ib_mr *ib_reg_phys_mr(struct ib_pd *pd, | |
855 | struct ib_phys_buf *phys_buf_array, | |
856 | int num_phys_buf, | |
857 | int mr_access_flags, | |
858 | u64 *iova_start) | |
859 | { | |
860 | struct ib_mr *mr; | |
861 | ||
7ce5eacb DB |
862 | if (!pd->device->reg_phys_mr) |
863 | return ERR_PTR(-ENOSYS); | |
864 | ||
1da177e4 LT |
865 | mr = pd->device->reg_phys_mr(pd, phys_buf_array, num_phys_buf, |
866 | mr_access_flags, iova_start); | |
867 | ||
868 | if (!IS_ERR(mr)) { | |
b5e81bf5 RD |
869 | mr->device = pd->device; |
870 | mr->pd = pd; | |
871 | mr->uobject = NULL; | |
1da177e4 LT |
872 | atomic_inc(&pd->usecnt); |
873 | atomic_set(&mr->usecnt, 0); | |
874 | } | |
875 | ||
876 | return mr; | |
877 | } | |
878 | EXPORT_SYMBOL(ib_reg_phys_mr); | |
879 | ||
880 | int ib_rereg_phys_mr(struct ib_mr *mr, | |
881 | int mr_rereg_mask, | |
882 | struct ib_pd *pd, | |
883 | struct ib_phys_buf *phys_buf_array, | |
884 | int num_phys_buf, | |
885 | int mr_access_flags, | |
886 | u64 *iova_start) | |
887 | { | |
888 | struct ib_pd *old_pd; | |
889 | int ret; | |
890 | ||
891 | if (!mr->device->rereg_phys_mr) | |
892 | return -ENOSYS; | |
893 | ||
894 | if (atomic_read(&mr->usecnt)) | |
895 | return -EBUSY; | |
896 | ||
897 | old_pd = mr->pd; | |
898 | ||
899 | ret = mr->device->rereg_phys_mr(mr, mr_rereg_mask, pd, | |
900 | phys_buf_array, num_phys_buf, | |
901 | mr_access_flags, iova_start); | |
902 | ||
903 | if (!ret && (mr_rereg_mask & IB_MR_REREG_PD)) { | |
904 | atomic_dec(&old_pd->usecnt); | |
905 | atomic_inc(&pd->usecnt); | |
906 | } | |
907 | ||
908 | return ret; | |
909 | } | |
910 | EXPORT_SYMBOL(ib_rereg_phys_mr); | |
911 | ||
912 | int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr) | |
913 | { | |
914 | return mr->device->query_mr ? | |
915 | mr->device->query_mr(mr, mr_attr) : -ENOSYS; | |
916 | } | |
917 | EXPORT_SYMBOL(ib_query_mr); | |
918 | ||
919 | int ib_dereg_mr(struct ib_mr *mr) | |
920 | { | |
921 | struct ib_pd *pd; | |
922 | int ret; | |
923 | ||
924 | if (atomic_read(&mr->usecnt)) | |
925 | return -EBUSY; | |
926 | ||
927 | pd = mr->pd; | |
928 | ret = mr->device->dereg_mr(mr); | |
929 | if (!ret) | |
930 | atomic_dec(&pd->usecnt); | |
931 | ||
932 | return ret; | |
933 | } | |
934 | EXPORT_SYMBOL(ib_dereg_mr); | |
935 | ||
00f7ec36 SW |
936 | struct ib_mr *ib_alloc_fast_reg_mr(struct ib_pd *pd, int max_page_list_len) |
937 | { | |
938 | struct ib_mr *mr; | |
939 | ||
940 | if (!pd->device->alloc_fast_reg_mr) | |
941 | return ERR_PTR(-ENOSYS); | |
942 | ||
943 | mr = pd->device->alloc_fast_reg_mr(pd, max_page_list_len); | |
944 | ||
945 | if (!IS_ERR(mr)) { | |
946 | mr->device = pd->device; | |
947 | mr->pd = pd; | |
948 | mr->uobject = NULL; | |
949 | atomic_inc(&pd->usecnt); | |
950 | atomic_set(&mr->usecnt, 0); | |
951 | } | |
952 | ||
953 | return mr; | |
954 | } | |
955 | EXPORT_SYMBOL(ib_alloc_fast_reg_mr); | |
956 | ||
957 | struct ib_fast_reg_page_list *ib_alloc_fast_reg_page_list(struct ib_device *device, | |
958 | int max_page_list_len) | |
959 | { | |
960 | struct ib_fast_reg_page_list *page_list; | |
961 | ||
962 | if (!device->alloc_fast_reg_page_list) | |
963 | return ERR_PTR(-ENOSYS); | |
964 | ||
965 | page_list = device->alloc_fast_reg_page_list(device, max_page_list_len); | |
966 | ||
967 | if (!IS_ERR(page_list)) { | |
968 | page_list->device = device; | |
969 | page_list->max_page_list_len = max_page_list_len; | |
970 | } | |
971 | ||
972 | return page_list; | |
973 | } | |
974 | EXPORT_SYMBOL(ib_alloc_fast_reg_page_list); | |
975 | ||
976 | void ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list) | |
977 | { | |
978 | page_list->device->free_fast_reg_page_list(page_list); | |
979 | } | |
980 | EXPORT_SYMBOL(ib_free_fast_reg_page_list); | |
981 | ||
1da177e4 LT |
982 | /* Memory windows */ |
983 | ||
984 | struct ib_mw *ib_alloc_mw(struct ib_pd *pd) | |
985 | { | |
986 | struct ib_mw *mw; | |
987 | ||
988 | if (!pd->device->alloc_mw) | |
989 | return ERR_PTR(-ENOSYS); | |
990 | ||
991 | mw = pd->device->alloc_mw(pd); | |
992 | if (!IS_ERR(mw)) { | |
b5e81bf5 RD |
993 | mw->device = pd->device; |
994 | mw->pd = pd; | |
995 | mw->uobject = NULL; | |
1da177e4 LT |
996 | atomic_inc(&pd->usecnt); |
997 | } | |
998 | ||
999 | return mw; | |
1000 | } | |
1001 | EXPORT_SYMBOL(ib_alloc_mw); | |
1002 | ||
1003 | int ib_dealloc_mw(struct ib_mw *mw) | |
1004 | { | |
1005 | struct ib_pd *pd; | |
1006 | int ret; | |
1007 | ||
1008 | pd = mw->pd; | |
1009 | ret = mw->device->dealloc_mw(mw); | |
1010 | if (!ret) | |
1011 | atomic_dec(&pd->usecnt); | |
1012 | ||
1013 | return ret; | |
1014 | } | |
1015 | EXPORT_SYMBOL(ib_dealloc_mw); | |
1016 | ||
1017 | /* "Fast" memory regions */ | |
1018 | ||
1019 | struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd, | |
1020 | int mr_access_flags, | |
1021 | struct ib_fmr_attr *fmr_attr) | |
1022 | { | |
1023 | struct ib_fmr *fmr; | |
1024 | ||
1025 | if (!pd->device->alloc_fmr) | |
1026 | return ERR_PTR(-ENOSYS); | |
1027 | ||
1028 | fmr = pd->device->alloc_fmr(pd, mr_access_flags, fmr_attr); | |
1029 | if (!IS_ERR(fmr)) { | |
1030 | fmr->device = pd->device; | |
1031 | fmr->pd = pd; | |
1032 | atomic_inc(&pd->usecnt); | |
1033 | } | |
1034 | ||
1035 | return fmr; | |
1036 | } | |
1037 | EXPORT_SYMBOL(ib_alloc_fmr); | |
1038 | ||
1039 | int ib_unmap_fmr(struct list_head *fmr_list) | |
1040 | { | |
1041 | struct ib_fmr *fmr; | |
1042 | ||
1043 | if (list_empty(fmr_list)) | |
1044 | return 0; | |
1045 | ||
1046 | fmr = list_entry(fmr_list->next, struct ib_fmr, list); | |
1047 | return fmr->device->unmap_fmr(fmr_list); | |
1048 | } | |
1049 | EXPORT_SYMBOL(ib_unmap_fmr); | |
1050 | ||
1051 | int ib_dealloc_fmr(struct ib_fmr *fmr) | |
1052 | { | |
1053 | struct ib_pd *pd; | |
1054 | int ret; | |
1055 | ||
1056 | pd = fmr->pd; | |
1057 | ret = fmr->device->dealloc_fmr(fmr); | |
1058 | if (!ret) | |
1059 | atomic_dec(&pd->usecnt); | |
1060 | ||
1061 | return ret; | |
1062 | } | |
1063 | EXPORT_SYMBOL(ib_dealloc_fmr); | |
1064 | ||
1065 | /* Multicast groups */ | |
1066 | ||
1067 | int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) | |
1068 | { | |
0c33aeed JM |
1069 | if (!qp->device->attach_mcast) |
1070 | return -ENOSYS; | |
1071 | if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD) | |
1072 | return -EINVAL; | |
1073 | ||
1074 | return qp->device->attach_mcast(qp, gid, lid); | |
1da177e4 LT |
1075 | } |
1076 | EXPORT_SYMBOL(ib_attach_mcast); | |
1077 | ||
1078 | int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) | |
1079 | { | |
0c33aeed JM |
1080 | if (!qp->device->detach_mcast) |
1081 | return -ENOSYS; | |
1082 | if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD) | |
1083 | return -EINVAL; | |
1084 | ||
1085 | return qp->device->detach_mcast(qp, gid, lid); | |
1da177e4 LT |
1086 | } |
1087 | EXPORT_SYMBOL(ib_detach_mcast); | |
59991f94 SH |
1088 | |
1089 | struct ib_xrcd *ib_alloc_xrcd(struct ib_device *device) | |
1090 | { | |
1091 | struct ib_xrcd *xrcd; | |
1092 | ||
1093 | if (!device->alloc_xrcd) | |
1094 | return ERR_PTR(-ENOSYS); | |
1095 | ||
1096 | xrcd = device->alloc_xrcd(device, NULL, NULL); | |
1097 | if (!IS_ERR(xrcd)) { | |
1098 | xrcd->device = device; | |
1099 | atomic_set(&xrcd->usecnt, 0); | |
d3d72d90 SH |
1100 | mutex_init(&xrcd->tgt_qp_mutex); |
1101 | INIT_LIST_HEAD(&xrcd->tgt_qp_list); | |
59991f94 SH |
1102 | } |
1103 | ||
1104 | return xrcd; | |
1105 | } | |
1106 | EXPORT_SYMBOL(ib_alloc_xrcd); | |
1107 | ||
1108 | int ib_dealloc_xrcd(struct ib_xrcd *xrcd) | |
1109 | { | |
d3d72d90 SH |
1110 | struct ib_qp *qp; |
1111 | int ret; | |
1112 | ||
59991f94 SH |
1113 | if (atomic_read(&xrcd->usecnt)) |
1114 | return -EBUSY; | |
1115 | ||
d3d72d90 SH |
1116 | while (!list_empty(&xrcd->tgt_qp_list)) { |
1117 | qp = list_entry(xrcd->tgt_qp_list.next, struct ib_qp, xrcd_list); | |
1118 | ret = ib_destroy_qp(qp); | |
1119 | if (ret) | |
1120 | return ret; | |
1121 | } | |
1122 | ||
59991f94 SH |
1123 | return xrcd->device->dealloc_xrcd(xrcd); |
1124 | } | |
1125 | EXPORT_SYMBOL(ib_dealloc_xrcd); |