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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 | ||
1da177e4 LT |
97 | /* Protection domains */ |
98 | ||
99 | struct ib_pd *ib_alloc_pd(struct ib_device *device) | |
100 | { | |
101 | struct ib_pd *pd; | |
102 | ||
b5e81bf5 | 103 | pd = device->alloc_pd(device, NULL, NULL); |
1da177e4 LT |
104 | |
105 | if (!IS_ERR(pd)) { | |
b5e81bf5 RD |
106 | pd->device = device; |
107 | pd->uobject = NULL; | |
1da177e4 LT |
108 | atomic_set(&pd->usecnt, 0); |
109 | } | |
110 | ||
111 | return pd; | |
112 | } | |
113 | EXPORT_SYMBOL(ib_alloc_pd); | |
114 | ||
115 | int ib_dealloc_pd(struct ib_pd *pd) | |
116 | { | |
117 | if (atomic_read(&pd->usecnt)) | |
118 | return -EBUSY; | |
119 | ||
120 | return pd->device->dealloc_pd(pd); | |
121 | } | |
122 | EXPORT_SYMBOL(ib_dealloc_pd); | |
123 | ||
124 | /* Address handles */ | |
125 | ||
126 | struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr) | |
127 | { | |
128 | struct ib_ah *ah; | |
129 | ||
130 | ah = pd->device->create_ah(pd, ah_attr); | |
131 | ||
132 | if (!IS_ERR(ah)) { | |
b5e81bf5 RD |
133 | ah->device = pd->device; |
134 | ah->pd = pd; | |
135 | ah->uobject = NULL; | |
1da177e4 LT |
136 | atomic_inc(&pd->usecnt); |
137 | } | |
138 | ||
139 | return ah; | |
140 | } | |
141 | EXPORT_SYMBOL(ib_create_ah); | |
142 | ||
4e00d694 SH |
143 | int ib_init_ah_from_wc(struct ib_device *device, u8 port_num, struct ib_wc *wc, |
144 | struct ib_grh *grh, struct ib_ah_attr *ah_attr) | |
513789ed | 145 | { |
513789ed HR |
146 | u32 flow_class; |
147 | u16 gid_index; | |
148 | int ret; | |
149 | ||
4e00d694 SH |
150 | memset(ah_attr, 0, sizeof *ah_attr); |
151 | ah_attr->dlid = wc->slid; | |
152 | ah_attr->sl = wc->sl; | |
153 | ah_attr->src_path_bits = wc->dlid_path_bits; | |
154 | ah_attr->port_num = port_num; | |
513789ed HR |
155 | |
156 | if (wc->wc_flags & IB_WC_GRH) { | |
4e00d694 SH |
157 | ah_attr->ah_flags = IB_AH_GRH; |
158 | ah_attr->grh.dgid = grh->sgid; | |
513789ed | 159 | |
4e00d694 | 160 | ret = ib_find_cached_gid(device, &grh->dgid, &port_num, |
513789ed HR |
161 | &gid_index); |
162 | if (ret) | |
4e00d694 | 163 | return ret; |
513789ed | 164 | |
4e00d694 | 165 | ah_attr->grh.sgid_index = (u8) gid_index; |
497677ab | 166 | flow_class = be32_to_cpu(grh->version_tclass_flow); |
4e00d694 | 167 | ah_attr->grh.flow_label = flow_class & 0xFFFFF; |
47645d8d | 168 | ah_attr->grh.hop_limit = 0xFF; |
4e00d694 | 169 | ah_attr->grh.traffic_class = (flow_class >> 20) & 0xFF; |
513789ed | 170 | } |
4e00d694 SH |
171 | return 0; |
172 | } | |
173 | EXPORT_SYMBOL(ib_init_ah_from_wc); | |
174 | ||
175 | struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc, | |
176 | struct ib_grh *grh, u8 port_num) | |
177 | { | |
178 | struct ib_ah_attr ah_attr; | |
179 | int ret; | |
180 | ||
181 | ret = ib_init_ah_from_wc(pd->device, port_num, wc, grh, &ah_attr); | |
182 | if (ret) | |
183 | return ERR_PTR(ret); | |
513789ed HR |
184 | |
185 | return ib_create_ah(pd, &ah_attr); | |
186 | } | |
187 | EXPORT_SYMBOL(ib_create_ah_from_wc); | |
188 | ||
1da177e4 LT |
189 | int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr) |
190 | { | |
191 | return ah->device->modify_ah ? | |
192 | ah->device->modify_ah(ah, ah_attr) : | |
193 | -ENOSYS; | |
194 | } | |
195 | EXPORT_SYMBOL(ib_modify_ah); | |
196 | ||
197 | int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr) | |
198 | { | |
199 | return ah->device->query_ah ? | |
200 | ah->device->query_ah(ah, ah_attr) : | |
201 | -ENOSYS; | |
202 | } | |
203 | EXPORT_SYMBOL(ib_query_ah); | |
204 | ||
205 | int ib_destroy_ah(struct ib_ah *ah) | |
206 | { | |
207 | struct ib_pd *pd; | |
208 | int ret; | |
209 | ||
210 | pd = ah->pd; | |
211 | ret = ah->device->destroy_ah(ah); | |
212 | if (!ret) | |
213 | atomic_dec(&pd->usecnt); | |
214 | ||
215 | return ret; | |
216 | } | |
217 | EXPORT_SYMBOL(ib_destroy_ah); | |
218 | ||
d41fcc67 RD |
219 | /* Shared receive queues */ |
220 | ||
221 | struct ib_srq *ib_create_srq(struct ib_pd *pd, | |
222 | struct ib_srq_init_attr *srq_init_attr) | |
223 | { | |
224 | struct ib_srq *srq; | |
225 | ||
226 | if (!pd->device->create_srq) | |
227 | return ERR_PTR(-ENOSYS); | |
228 | ||
229 | srq = pd->device->create_srq(pd, srq_init_attr, NULL); | |
230 | ||
231 | if (!IS_ERR(srq)) { | |
232 | srq->device = pd->device; | |
233 | srq->pd = pd; | |
234 | srq->uobject = NULL; | |
235 | srq->event_handler = srq_init_attr->event_handler; | |
236 | srq->srq_context = srq_init_attr->srq_context; | |
237 | atomic_inc(&pd->usecnt); | |
238 | atomic_set(&srq->usecnt, 0); | |
239 | } | |
240 | ||
241 | return srq; | |
242 | } | |
243 | EXPORT_SYMBOL(ib_create_srq); | |
244 | ||
245 | int ib_modify_srq(struct ib_srq *srq, | |
246 | struct ib_srq_attr *srq_attr, | |
247 | enum ib_srq_attr_mask srq_attr_mask) | |
248 | { | |
7ce5eacb DB |
249 | return srq->device->modify_srq ? |
250 | srq->device->modify_srq(srq, srq_attr, srq_attr_mask, NULL) : | |
251 | -ENOSYS; | |
d41fcc67 RD |
252 | } |
253 | EXPORT_SYMBOL(ib_modify_srq); | |
254 | ||
255 | int ib_query_srq(struct ib_srq *srq, | |
256 | struct ib_srq_attr *srq_attr) | |
257 | { | |
258 | return srq->device->query_srq ? | |
259 | srq->device->query_srq(srq, srq_attr) : -ENOSYS; | |
260 | } | |
261 | EXPORT_SYMBOL(ib_query_srq); | |
262 | ||
263 | int ib_destroy_srq(struct ib_srq *srq) | |
264 | { | |
265 | struct ib_pd *pd; | |
266 | int ret; | |
267 | ||
268 | if (atomic_read(&srq->usecnt)) | |
269 | return -EBUSY; | |
270 | ||
271 | pd = srq->pd; | |
272 | ||
273 | ret = srq->device->destroy_srq(srq); | |
274 | if (!ret) | |
275 | atomic_dec(&pd->usecnt); | |
276 | ||
277 | return ret; | |
278 | } | |
279 | EXPORT_SYMBOL(ib_destroy_srq); | |
280 | ||
1da177e4 LT |
281 | /* Queue pairs */ |
282 | ||
283 | struct ib_qp *ib_create_qp(struct ib_pd *pd, | |
284 | struct ib_qp_init_attr *qp_init_attr) | |
285 | { | |
286 | struct ib_qp *qp; | |
287 | ||
b5e81bf5 | 288 | qp = pd->device->create_qp(pd, qp_init_attr, NULL); |
1da177e4 LT |
289 | |
290 | if (!IS_ERR(qp)) { | |
291 | qp->device = pd->device; | |
292 | qp->pd = pd; | |
293 | qp->send_cq = qp_init_attr->send_cq; | |
294 | qp->recv_cq = qp_init_attr->recv_cq; | |
295 | qp->srq = qp_init_attr->srq; | |
b5e81bf5 | 296 | qp->uobject = NULL; |
1da177e4 LT |
297 | qp->event_handler = qp_init_attr->event_handler; |
298 | qp->qp_context = qp_init_attr->qp_context; | |
299 | qp->qp_type = qp_init_attr->qp_type; | |
300 | atomic_inc(&pd->usecnt); | |
301 | atomic_inc(&qp_init_attr->send_cq->usecnt); | |
302 | atomic_inc(&qp_init_attr->recv_cq->usecnt); | |
303 | if (qp_init_attr->srq) | |
304 | atomic_inc(&qp_init_attr->srq->usecnt); | |
305 | } | |
306 | ||
307 | return qp; | |
308 | } | |
309 | EXPORT_SYMBOL(ib_create_qp); | |
310 | ||
8a51866f RD |
311 | static const struct { |
312 | int valid; | |
313 | enum ib_qp_attr_mask req_param[IB_QPT_RAW_ETY + 1]; | |
314 | enum ib_qp_attr_mask opt_param[IB_QPT_RAW_ETY + 1]; | |
315 | } qp_state_table[IB_QPS_ERR + 1][IB_QPS_ERR + 1] = { | |
316 | [IB_QPS_RESET] = { | |
317 | [IB_QPS_RESET] = { .valid = 1 }, | |
8a51866f RD |
318 | [IB_QPS_INIT] = { |
319 | .valid = 1, | |
320 | .req_param = { | |
321 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | | |
322 | IB_QP_PORT | | |
323 | IB_QP_QKEY), | |
324 | [IB_QPT_UC] = (IB_QP_PKEY_INDEX | | |
325 | IB_QP_PORT | | |
326 | IB_QP_ACCESS_FLAGS), | |
327 | [IB_QPT_RC] = (IB_QP_PKEY_INDEX | | |
328 | IB_QP_PORT | | |
329 | IB_QP_ACCESS_FLAGS), | |
330 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | | |
331 | IB_QP_QKEY), | |
332 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | | |
333 | IB_QP_QKEY), | |
334 | } | |
335 | }, | |
336 | }, | |
337 | [IB_QPS_INIT] = { | |
338 | [IB_QPS_RESET] = { .valid = 1 }, | |
339 | [IB_QPS_ERR] = { .valid = 1 }, | |
340 | [IB_QPS_INIT] = { | |
341 | .valid = 1, | |
342 | .opt_param = { | |
343 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | | |
344 | IB_QP_PORT | | |
345 | IB_QP_QKEY), | |
346 | [IB_QPT_UC] = (IB_QP_PKEY_INDEX | | |
347 | IB_QP_PORT | | |
348 | IB_QP_ACCESS_FLAGS), | |
349 | [IB_QPT_RC] = (IB_QP_PKEY_INDEX | | |
350 | IB_QP_PORT | | |
351 | IB_QP_ACCESS_FLAGS), | |
352 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | | |
353 | IB_QP_QKEY), | |
354 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | | |
355 | IB_QP_QKEY), | |
356 | } | |
357 | }, | |
358 | [IB_QPS_RTR] = { | |
359 | .valid = 1, | |
360 | .req_param = { | |
361 | [IB_QPT_UC] = (IB_QP_AV | | |
362 | IB_QP_PATH_MTU | | |
363 | IB_QP_DEST_QPN | | |
364 | IB_QP_RQ_PSN), | |
365 | [IB_QPT_RC] = (IB_QP_AV | | |
366 | IB_QP_PATH_MTU | | |
367 | IB_QP_DEST_QPN | | |
368 | IB_QP_RQ_PSN | | |
369 | IB_QP_MAX_DEST_RD_ATOMIC | | |
370 | IB_QP_MIN_RNR_TIMER), | |
371 | }, | |
372 | .opt_param = { | |
373 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | | |
374 | IB_QP_QKEY), | |
375 | [IB_QPT_UC] = (IB_QP_ALT_PATH | | |
376 | IB_QP_ACCESS_FLAGS | | |
377 | IB_QP_PKEY_INDEX), | |
378 | [IB_QPT_RC] = (IB_QP_ALT_PATH | | |
379 | IB_QP_ACCESS_FLAGS | | |
380 | IB_QP_PKEY_INDEX), | |
381 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | | |
382 | IB_QP_QKEY), | |
383 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | | |
384 | IB_QP_QKEY), | |
385 | } | |
386 | } | |
387 | }, | |
388 | [IB_QPS_RTR] = { | |
389 | [IB_QPS_RESET] = { .valid = 1 }, | |
390 | [IB_QPS_ERR] = { .valid = 1 }, | |
391 | [IB_QPS_RTS] = { | |
392 | .valid = 1, | |
393 | .req_param = { | |
394 | [IB_QPT_UD] = IB_QP_SQ_PSN, | |
395 | [IB_QPT_UC] = IB_QP_SQ_PSN, | |
396 | [IB_QPT_RC] = (IB_QP_TIMEOUT | | |
397 | IB_QP_RETRY_CNT | | |
398 | IB_QP_RNR_RETRY | | |
399 | IB_QP_SQ_PSN | | |
400 | IB_QP_MAX_QP_RD_ATOMIC), | |
401 | [IB_QPT_SMI] = IB_QP_SQ_PSN, | |
402 | [IB_QPT_GSI] = IB_QP_SQ_PSN, | |
403 | }, | |
404 | .opt_param = { | |
405 | [IB_QPT_UD] = (IB_QP_CUR_STATE | | |
406 | IB_QP_QKEY), | |
407 | [IB_QPT_UC] = (IB_QP_CUR_STATE | | |
408 | IB_QP_ALT_PATH | | |
409 | IB_QP_ACCESS_FLAGS | | |
410 | IB_QP_PATH_MIG_STATE), | |
411 | [IB_QPT_RC] = (IB_QP_CUR_STATE | | |
412 | IB_QP_ALT_PATH | | |
413 | IB_QP_ACCESS_FLAGS | | |
414 | IB_QP_MIN_RNR_TIMER | | |
415 | IB_QP_PATH_MIG_STATE), | |
416 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | | |
417 | IB_QP_QKEY), | |
418 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | | |
419 | IB_QP_QKEY), | |
420 | } | |
421 | } | |
422 | }, | |
423 | [IB_QPS_RTS] = { | |
424 | [IB_QPS_RESET] = { .valid = 1 }, | |
425 | [IB_QPS_ERR] = { .valid = 1 }, | |
426 | [IB_QPS_RTS] = { | |
427 | .valid = 1, | |
428 | .opt_param = { | |
429 | [IB_QPT_UD] = (IB_QP_CUR_STATE | | |
430 | IB_QP_QKEY), | |
4546d31d DB |
431 | [IB_QPT_UC] = (IB_QP_CUR_STATE | |
432 | IB_QP_ACCESS_FLAGS | | |
8a51866f RD |
433 | IB_QP_ALT_PATH | |
434 | IB_QP_PATH_MIG_STATE), | |
4546d31d DB |
435 | [IB_QPT_RC] = (IB_QP_CUR_STATE | |
436 | IB_QP_ACCESS_FLAGS | | |
8a51866f RD |
437 | IB_QP_ALT_PATH | |
438 | IB_QP_PATH_MIG_STATE | | |
439 | IB_QP_MIN_RNR_TIMER), | |
440 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | | |
441 | IB_QP_QKEY), | |
442 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | | |
443 | IB_QP_QKEY), | |
444 | } | |
445 | }, | |
446 | [IB_QPS_SQD] = { | |
447 | .valid = 1, | |
448 | .opt_param = { | |
449 | [IB_QPT_UD] = IB_QP_EN_SQD_ASYNC_NOTIFY, | |
450 | [IB_QPT_UC] = IB_QP_EN_SQD_ASYNC_NOTIFY, | |
451 | [IB_QPT_RC] = IB_QP_EN_SQD_ASYNC_NOTIFY, | |
452 | [IB_QPT_SMI] = IB_QP_EN_SQD_ASYNC_NOTIFY, | |
453 | [IB_QPT_GSI] = IB_QP_EN_SQD_ASYNC_NOTIFY | |
454 | } | |
455 | }, | |
456 | }, | |
457 | [IB_QPS_SQD] = { | |
458 | [IB_QPS_RESET] = { .valid = 1 }, | |
459 | [IB_QPS_ERR] = { .valid = 1 }, | |
460 | [IB_QPS_RTS] = { | |
461 | .valid = 1, | |
462 | .opt_param = { | |
463 | [IB_QPT_UD] = (IB_QP_CUR_STATE | | |
464 | IB_QP_QKEY), | |
465 | [IB_QPT_UC] = (IB_QP_CUR_STATE | | |
466 | IB_QP_ALT_PATH | | |
467 | IB_QP_ACCESS_FLAGS | | |
468 | IB_QP_PATH_MIG_STATE), | |
469 | [IB_QPT_RC] = (IB_QP_CUR_STATE | | |
470 | IB_QP_ALT_PATH | | |
471 | IB_QP_ACCESS_FLAGS | | |
472 | IB_QP_MIN_RNR_TIMER | | |
473 | IB_QP_PATH_MIG_STATE), | |
474 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | | |
475 | IB_QP_QKEY), | |
476 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | | |
477 | IB_QP_QKEY), | |
478 | } | |
479 | }, | |
480 | [IB_QPS_SQD] = { | |
481 | .valid = 1, | |
482 | .opt_param = { | |
483 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | | |
484 | IB_QP_QKEY), | |
485 | [IB_QPT_UC] = (IB_QP_AV | | |
8a51866f RD |
486 | IB_QP_ALT_PATH | |
487 | IB_QP_ACCESS_FLAGS | | |
488 | IB_QP_PKEY_INDEX | | |
489 | IB_QP_PATH_MIG_STATE), | |
490 | [IB_QPT_RC] = (IB_QP_PORT | | |
491 | IB_QP_AV | | |
492 | IB_QP_TIMEOUT | | |
493 | IB_QP_RETRY_CNT | | |
494 | IB_QP_RNR_RETRY | | |
495 | IB_QP_MAX_QP_RD_ATOMIC | | |
496 | IB_QP_MAX_DEST_RD_ATOMIC | | |
8a51866f RD |
497 | IB_QP_ALT_PATH | |
498 | IB_QP_ACCESS_FLAGS | | |
499 | IB_QP_PKEY_INDEX | | |
500 | IB_QP_MIN_RNR_TIMER | | |
501 | IB_QP_PATH_MIG_STATE), | |
502 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | | |
503 | IB_QP_QKEY), | |
504 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | | |
505 | IB_QP_QKEY), | |
506 | } | |
507 | } | |
508 | }, | |
509 | [IB_QPS_SQE] = { | |
510 | [IB_QPS_RESET] = { .valid = 1 }, | |
511 | [IB_QPS_ERR] = { .valid = 1 }, | |
512 | [IB_QPS_RTS] = { | |
513 | .valid = 1, | |
514 | .opt_param = { | |
515 | [IB_QPT_UD] = (IB_QP_CUR_STATE | | |
516 | IB_QP_QKEY), | |
517 | [IB_QPT_UC] = (IB_QP_CUR_STATE | | |
518 | IB_QP_ACCESS_FLAGS), | |
519 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | | |
520 | IB_QP_QKEY), | |
521 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | | |
522 | IB_QP_QKEY), | |
523 | } | |
524 | } | |
525 | }, | |
526 | [IB_QPS_ERR] = { | |
527 | [IB_QPS_RESET] = { .valid = 1 }, | |
528 | [IB_QPS_ERR] = { .valid = 1 } | |
529 | } | |
530 | }; | |
531 | ||
532 | int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state, | |
533 | enum ib_qp_type type, enum ib_qp_attr_mask mask) | |
534 | { | |
535 | enum ib_qp_attr_mask req_param, opt_param; | |
536 | ||
537 | if (cur_state < 0 || cur_state > IB_QPS_ERR || | |
538 | next_state < 0 || next_state > IB_QPS_ERR) | |
539 | return 0; | |
540 | ||
541 | if (mask & IB_QP_CUR_STATE && | |
542 | cur_state != IB_QPS_RTR && cur_state != IB_QPS_RTS && | |
543 | cur_state != IB_QPS_SQD && cur_state != IB_QPS_SQE) | |
544 | return 0; | |
545 | ||
546 | if (!qp_state_table[cur_state][next_state].valid) | |
547 | return 0; | |
548 | ||
549 | req_param = qp_state_table[cur_state][next_state].req_param[type]; | |
550 | opt_param = qp_state_table[cur_state][next_state].opt_param[type]; | |
551 | ||
552 | if ((mask & req_param) != req_param) | |
553 | return 0; | |
554 | ||
555 | if (mask & ~(req_param | opt_param | IB_QP_STATE)) | |
556 | return 0; | |
557 | ||
558 | return 1; | |
559 | } | |
560 | EXPORT_SYMBOL(ib_modify_qp_is_ok); | |
561 | ||
1da177e4 LT |
562 | int ib_modify_qp(struct ib_qp *qp, |
563 | struct ib_qp_attr *qp_attr, | |
564 | int qp_attr_mask) | |
565 | { | |
9bc57e2d | 566 | return qp->device->modify_qp(qp, qp_attr, qp_attr_mask, NULL); |
1da177e4 LT |
567 | } |
568 | EXPORT_SYMBOL(ib_modify_qp); | |
569 | ||
570 | int ib_query_qp(struct ib_qp *qp, | |
571 | struct ib_qp_attr *qp_attr, | |
572 | int qp_attr_mask, | |
573 | struct ib_qp_init_attr *qp_init_attr) | |
574 | { | |
575 | return qp->device->query_qp ? | |
576 | qp->device->query_qp(qp, qp_attr, qp_attr_mask, qp_init_attr) : | |
577 | -ENOSYS; | |
578 | } | |
579 | EXPORT_SYMBOL(ib_query_qp); | |
580 | ||
581 | int ib_destroy_qp(struct ib_qp *qp) | |
582 | { | |
583 | struct ib_pd *pd; | |
584 | struct ib_cq *scq, *rcq; | |
585 | struct ib_srq *srq; | |
586 | int ret; | |
587 | ||
588 | pd = qp->pd; | |
589 | scq = qp->send_cq; | |
590 | rcq = qp->recv_cq; | |
591 | srq = qp->srq; | |
592 | ||
593 | ret = qp->device->destroy_qp(qp); | |
594 | if (!ret) { | |
595 | atomic_dec(&pd->usecnt); | |
596 | atomic_dec(&scq->usecnt); | |
597 | atomic_dec(&rcq->usecnt); | |
598 | if (srq) | |
599 | atomic_dec(&srq->usecnt); | |
600 | } | |
601 | ||
602 | return ret; | |
603 | } | |
604 | EXPORT_SYMBOL(ib_destroy_qp); | |
605 | ||
606 | /* Completion queues */ | |
607 | ||
608 | struct ib_cq *ib_create_cq(struct ib_device *device, | |
609 | ib_comp_handler comp_handler, | |
610 | void (*event_handler)(struct ib_event *, void *), | |
f4fd0b22 | 611 | void *cq_context, int cqe, int comp_vector) |
1da177e4 LT |
612 | { |
613 | struct ib_cq *cq; | |
614 | ||
f4fd0b22 | 615 | cq = device->create_cq(device, cqe, comp_vector, NULL, NULL); |
1da177e4 LT |
616 | |
617 | if (!IS_ERR(cq)) { | |
618 | cq->device = device; | |
b5e81bf5 | 619 | cq->uobject = NULL; |
1da177e4 LT |
620 | cq->comp_handler = comp_handler; |
621 | cq->event_handler = event_handler; | |
622 | cq->cq_context = cq_context; | |
623 | atomic_set(&cq->usecnt, 0); | |
624 | } | |
625 | ||
626 | return cq; | |
627 | } | |
628 | EXPORT_SYMBOL(ib_create_cq); | |
629 | ||
2dd57162 EC |
630 | int ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period) |
631 | { | |
632 | return cq->device->modify_cq ? | |
633 | cq->device->modify_cq(cq, cq_count, cq_period) : -ENOSYS; | |
634 | } | |
635 | EXPORT_SYMBOL(ib_modify_cq); | |
636 | ||
1da177e4 LT |
637 | int ib_destroy_cq(struct ib_cq *cq) |
638 | { | |
639 | if (atomic_read(&cq->usecnt)) | |
640 | return -EBUSY; | |
641 | ||
642 | return cq->device->destroy_cq(cq); | |
643 | } | |
644 | EXPORT_SYMBOL(ib_destroy_cq); | |
645 | ||
a74cd4af | 646 | int ib_resize_cq(struct ib_cq *cq, int cqe) |
1da177e4 | 647 | { |
40de2e54 | 648 | return cq->device->resize_cq ? |
33b9b3ee | 649 | cq->device->resize_cq(cq, cqe, NULL) : -ENOSYS; |
1da177e4 LT |
650 | } |
651 | EXPORT_SYMBOL(ib_resize_cq); | |
652 | ||
653 | /* Memory regions */ | |
654 | ||
655 | struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags) | |
656 | { | |
657 | struct ib_mr *mr; | |
658 | ||
659 | mr = pd->device->get_dma_mr(pd, mr_access_flags); | |
660 | ||
661 | if (!IS_ERR(mr)) { | |
b5e81bf5 RD |
662 | mr->device = pd->device; |
663 | mr->pd = pd; | |
664 | mr->uobject = NULL; | |
1da177e4 LT |
665 | atomic_inc(&pd->usecnt); |
666 | atomic_set(&mr->usecnt, 0); | |
667 | } | |
668 | ||
669 | return mr; | |
670 | } | |
671 | EXPORT_SYMBOL(ib_get_dma_mr); | |
672 | ||
673 | struct ib_mr *ib_reg_phys_mr(struct ib_pd *pd, | |
674 | struct ib_phys_buf *phys_buf_array, | |
675 | int num_phys_buf, | |
676 | int mr_access_flags, | |
677 | u64 *iova_start) | |
678 | { | |
679 | struct ib_mr *mr; | |
680 | ||
7ce5eacb DB |
681 | if (!pd->device->reg_phys_mr) |
682 | return ERR_PTR(-ENOSYS); | |
683 | ||
1da177e4 LT |
684 | mr = pd->device->reg_phys_mr(pd, phys_buf_array, num_phys_buf, |
685 | mr_access_flags, iova_start); | |
686 | ||
687 | if (!IS_ERR(mr)) { | |
b5e81bf5 RD |
688 | mr->device = pd->device; |
689 | mr->pd = pd; | |
690 | mr->uobject = NULL; | |
1da177e4 LT |
691 | atomic_inc(&pd->usecnt); |
692 | atomic_set(&mr->usecnt, 0); | |
693 | } | |
694 | ||
695 | return mr; | |
696 | } | |
697 | EXPORT_SYMBOL(ib_reg_phys_mr); | |
698 | ||
699 | int ib_rereg_phys_mr(struct ib_mr *mr, | |
700 | int mr_rereg_mask, | |
701 | struct ib_pd *pd, | |
702 | struct ib_phys_buf *phys_buf_array, | |
703 | int num_phys_buf, | |
704 | int mr_access_flags, | |
705 | u64 *iova_start) | |
706 | { | |
707 | struct ib_pd *old_pd; | |
708 | int ret; | |
709 | ||
710 | if (!mr->device->rereg_phys_mr) | |
711 | return -ENOSYS; | |
712 | ||
713 | if (atomic_read(&mr->usecnt)) | |
714 | return -EBUSY; | |
715 | ||
716 | old_pd = mr->pd; | |
717 | ||
718 | ret = mr->device->rereg_phys_mr(mr, mr_rereg_mask, pd, | |
719 | phys_buf_array, num_phys_buf, | |
720 | mr_access_flags, iova_start); | |
721 | ||
722 | if (!ret && (mr_rereg_mask & IB_MR_REREG_PD)) { | |
723 | atomic_dec(&old_pd->usecnt); | |
724 | atomic_inc(&pd->usecnt); | |
725 | } | |
726 | ||
727 | return ret; | |
728 | } | |
729 | EXPORT_SYMBOL(ib_rereg_phys_mr); | |
730 | ||
731 | int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr) | |
732 | { | |
733 | return mr->device->query_mr ? | |
734 | mr->device->query_mr(mr, mr_attr) : -ENOSYS; | |
735 | } | |
736 | EXPORT_SYMBOL(ib_query_mr); | |
737 | ||
738 | int ib_dereg_mr(struct ib_mr *mr) | |
739 | { | |
740 | struct ib_pd *pd; | |
741 | int ret; | |
742 | ||
743 | if (atomic_read(&mr->usecnt)) | |
744 | return -EBUSY; | |
745 | ||
746 | pd = mr->pd; | |
747 | ret = mr->device->dereg_mr(mr); | |
748 | if (!ret) | |
749 | atomic_dec(&pd->usecnt); | |
750 | ||
751 | return ret; | |
752 | } | |
753 | EXPORT_SYMBOL(ib_dereg_mr); | |
754 | ||
00f7ec36 SW |
755 | struct ib_mr *ib_alloc_fast_reg_mr(struct ib_pd *pd, int max_page_list_len) |
756 | { | |
757 | struct ib_mr *mr; | |
758 | ||
759 | if (!pd->device->alloc_fast_reg_mr) | |
760 | return ERR_PTR(-ENOSYS); | |
761 | ||
762 | mr = pd->device->alloc_fast_reg_mr(pd, max_page_list_len); | |
763 | ||
764 | if (!IS_ERR(mr)) { | |
765 | mr->device = pd->device; | |
766 | mr->pd = pd; | |
767 | mr->uobject = NULL; | |
768 | atomic_inc(&pd->usecnt); | |
769 | atomic_set(&mr->usecnt, 0); | |
770 | } | |
771 | ||
772 | return mr; | |
773 | } | |
774 | EXPORT_SYMBOL(ib_alloc_fast_reg_mr); | |
775 | ||
776 | struct ib_fast_reg_page_list *ib_alloc_fast_reg_page_list(struct ib_device *device, | |
777 | int max_page_list_len) | |
778 | { | |
779 | struct ib_fast_reg_page_list *page_list; | |
780 | ||
781 | if (!device->alloc_fast_reg_page_list) | |
782 | return ERR_PTR(-ENOSYS); | |
783 | ||
784 | page_list = device->alloc_fast_reg_page_list(device, max_page_list_len); | |
785 | ||
786 | if (!IS_ERR(page_list)) { | |
787 | page_list->device = device; | |
788 | page_list->max_page_list_len = max_page_list_len; | |
789 | } | |
790 | ||
791 | return page_list; | |
792 | } | |
793 | EXPORT_SYMBOL(ib_alloc_fast_reg_page_list); | |
794 | ||
795 | void ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list) | |
796 | { | |
797 | page_list->device->free_fast_reg_page_list(page_list); | |
798 | } | |
799 | EXPORT_SYMBOL(ib_free_fast_reg_page_list); | |
800 | ||
1da177e4 LT |
801 | /* Memory windows */ |
802 | ||
803 | struct ib_mw *ib_alloc_mw(struct ib_pd *pd) | |
804 | { | |
805 | struct ib_mw *mw; | |
806 | ||
807 | if (!pd->device->alloc_mw) | |
808 | return ERR_PTR(-ENOSYS); | |
809 | ||
810 | mw = pd->device->alloc_mw(pd); | |
811 | if (!IS_ERR(mw)) { | |
b5e81bf5 RD |
812 | mw->device = pd->device; |
813 | mw->pd = pd; | |
814 | mw->uobject = NULL; | |
1da177e4 LT |
815 | atomic_inc(&pd->usecnt); |
816 | } | |
817 | ||
818 | return mw; | |
819 | } | |
820 | EXPORT_SYMBOL(ib_alloc_mw); | |
821 | ||
822 | int ib_dealloc_mw(struct ib_mw *mw) | |
823 | { | |
824 | struct ib_pd *pd; | |
825 | int ret; | |
826 | ||
827 | pd = mw->pd; | |
828 | ret = mw->device->dealloc_mw(mw); | |
829 | if (!ret) | |
830 | atomic_dec(&pd->usecnt); | |
831 | ||
832 | return ret; | |
833 | } | |
834 | EXPORT_SYMBOL(ib_dealloc_mw); | |
835 | ||
836 | /* "Fast" memory regions */ | |
837 | ||
838 | struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd, | |
839 | int mr_access_flags, | |
840 | struct ib_fmr_attr *fmr_attr) | |
841 | { | |
842 | struct ib_fmr *fmr; | |
843 | ||
844 | if (!pd->device->alloc_fmr) | |
845 | return ERR_PTR(-ENOSYS); | |
846 | ||
847 | fmr = pd->device->alloc_fmr(pd, mr_access_flags, fmr_attr); | |
848 | if (!IS_ERR(fmr)) { | |
849 | fmr->device = pd->device; | |
850 | fmr->pd = pd; | |
851 | atomic_inc(&pd->usecnt); | |
852 | } | |
853 | ||
854 | return fmr; | |
855 | } | |
856 | EXPORT_SYMBOL(ib_alloc_fmr); | |
857 | ||
858 | int ib_unmap_fmr(struct list_head *fmr_list) | |
859 | { | |
860 | struct ib_fmr *fmr; | |
861 | ||
862 | if (list_empty(fmr_list)) | |
863 | return 0; | |
864 | ||
865 | fmr = list_entry(fmr_list->next, struct ib_fmr, list); | |
866 | return fmr->device->unmap_fmr(fmr_list); | |
867 | } | |
868 | EXPORT_SYMBOL(ib_unmap_fmr); | |
869 | ||
870 | int ib_dealloc_fmr(struct ib_fmr *fmr) | |
871 | { | |
872 | struct ib_pd *pd; | |
873 | int ret; | |
874 | ||
875 | pd = fmr->pd; | |
876 | ret = fmr->device->dealloc_fmr(fmr); | |
877 | if (!ret) | |
878 | atomic_dec(&pd->usecnt); | |
879 | ||
880 | return ret; | |
881 | } | |
882 | EXPORT_SYMBOL(ib_dealloc_fmr); | |
883 | ||
884 | /* Multicast groups */ | |
885 | ||
886 | int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) | |
887 | { | |
0c33aeed JM |
888 | if (!qp->device->attach_mcast) |
889 | return -ENOSYS; | |
890 | if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD) | |
891 | return -EINVAL; | |
892 | ||
893 | return qp->device->attach_mcast(qp, gid, lid); | |
1da177e4 LT |
894 | } |
895 | EXPORT_SYMBOL(ib_attach_mcast); | |
896 | ||
897 | int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) | |
898 | { | |
0c33aeed JM |
899 | if (!qp->device->detach_mcast) |
900 | return -ENOSYS; | |
901 | if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD) | |
902 | return -EINVAL; | |
903 | ||
904 | return qp->device->detach_mcast(qp, gid, lid); | |
1da177e4 LT |
905 | } |
906 | EXPORT_SYMBOL(ib_detach_mcast); |