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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. | |
37 | * | |
38 | * $Id: verbs.c 1349 2004-12-16 21:09:43Z roland $ | |
39 | */ | |
40 | ||
41 | #include <linux/errno.h> | |
42 | #include <linux/err.h> | |
8c65b4a6 | 43 | #include <linux/string.h> |
1da177e4 | 44 | |
a4d61e84 RD |
45 | #include <rdma/ib_verbs.h> |
46 | #include <rdma/ib_cache.h> | |
1da177e4 | 47 | |
bf6a9e31 JM |
48 | int ib_rate_to_mult(enum ib_rate rate) |
49 | { | |
50 | switch (rate) { | |
51 | case IB_RATE_2_5_GBPS: return 1; | |
52 | case IB_RATE_5_GBPS: return 2; | |
53 | case IB_RATE_10_GBPS: return 4; | |
54 | case IB_RATE_20_GBPS: return 8; | |
55 | case IB_RATE_30_GBPS: return 12; | |
56 | case IB_RATE_40_GBPS: return 16; | |
57 | case IB_RATE_60_GBPS: return 24; | |
58 | case IB_RATE_80_GBPS: return 32; | |
59 | case IB_RATE_120_GBPS: return 48; | |
60 | default: return -1; | |
61 | } | |
62 | } | |
63 | EXPORT_SYMBOL(ib_rate_to_mult); | |
64 | ||
65 | enum ib_rate mult_to_ib_rate(int mult) | |
66 | { | |
67 | switch (mult) { | |
68 | case 1: return IB_RATE_2_5_GBPS; | |
69 | case 2: return IB_RATE_5_GBPS; | |
70 | case 4: return IB_RATE_10_GBPS; | |
71 | case 8: return IB_RATE_20_GBPS; | |
72 | case 12: return IB_RATE_30_GBPS; | |
73 | case 16: return IB_RATE_40_GBPS; | |
74 | case 24: return IB_RATE_60_GBPS; | |
75 | case 32: return IB_RATE_80_GBPS; | |
76 | case 48: return IB_RATE_120_GBPS; | |
77 | default: return IB_RATE_PORT_CURRENT; | |
78 | } | |
79 | } | |
80 | EXPORT_SYMBOL(mult_to_ib_rate); | |
81 | ||
1da177e4 LT |
82 | /* Protection domains */ |
83 | ||
84 | struct ib_pd *ib_alloc_pd(struct ib_device *device) | |
85 | { | |
86 | struct ib_pd *pd; | |
87 | ||
b5e81bf5 | 88 | pd = device->alloc_pd(device, NULL, NULL); |
1da177e4 LT |
89 | |
90 | if (!IS_ERR(pd)) { | |
b5e81bf5 RD |
91 | pd->device = device; |
92 | pd->uobject = NULL; | |
1da177e4 LT |
93 | atomic_set(&pd->usecnt, 0); |
94 | } | |
95 | ||
96 | return pd; | |
97 | } | |
98 | EXPORT_SYMBOL(ib_alloc_pd); | |
99 | ||
100 | int ib_dealloc_pd(struct ib_pd *pd) | |
101 | { | |
102 | if (atomic_read(&pd->usecnt)) | |
103 | return -EBUSY; | |
104 | ||
105 | return pd->device->dealloc_pd(pd); | |
106 | } | |
107 | EXPORT_SYMBOL(ib_dealloc_pd); | |
108 | ||
109 | /* Address handles */ | |
110 | ||
111 | struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr) | |
112 | { | |
113 | struct ib_ah *ah; | |
114 | ||
115 | ah = pd->device->create_ah(pd, ah_attr); | |
116 | ||
117 | if (!IS_ERR(ah)) { | |
b5e81bf5 RD |
118 | ah->device = pd->device; |
119 | ah->pd = pd; | |
120 | ah->uobject = NULL; | |
1da177e4 LT |
121 | atomic_inc(&pd->usecnt); |
122 | } | |
123 | ||
124 | return ah; | |
125 | } | |
126 | EXPORT_SYMBOL(ib_create_ah); | |
127 | ||
513789ed HR |
128 | struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc, |
129 | struct ib_grh *grh, u8 port_num) | |
130 | { | |
131 | struct ib_ah_attr ah_attr; | |
132 | u32 flow_class; | |
133 | u16 gid_index; | |
134 | int ret; | |
135 | ||
136 | memset(&ah_attr, 0, sizeof ah_attr); | |
137 | ah_attr.dlid = wc->slid; | |
138 | ah_attr.sl = wc->sl; | |
139 | ah_attr.src_path_bits = wc->dlid_path_bits; | |
140 | ah_attr.port_num = port_num; | |
141 | ||
142 | if (wc->wc_flags & IB_WC_GRH) { | |
143 | ah_attr.ah_flags = IB_AH_GRH; | |
4f8448df | 144 | ah_attr.grh.dgid = grh->sgid; |
513789ed | 145 | |
4f8448df | 146 | ret = ib_find_cached_gid(pd->device, &grh->dgid, &port_num, |
513789ed HR |
147 | &gid_index); |
148 | if (ret) | |
149 | return ERR_PTR(ret); | |
150 | ||
151 | ah_attr.grh.sgid_index = (u8) gid_index; | |
497677ab | 152 | flow_class = be32_to_cpu(grh->version_tclass_flow); |
513789ed HR |
153 | ah_attr.grh.flow_label = flow_class & 0xFFFFF; |
154 | ah_attr.grh.traffic_class = (flow_class >> 20) & 0xFF; | |
155 | ah_attr.grh.hop_limit = grh->hop_limit; | |
156 | } | |
157 | ||
158 | return ib_create_ah(pd, &ah_attr); | |
159 | } | |
160 | EXPORT_SYMBOL(ib_create_ah_from_wc); | |
161 | ||
1da177e4 LT |
162 | int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr) |
163 | { | |
164 | return ah->device->modify_ah ? | |
165 | ah->device->modify_ah(ah, ah_attr) : | |
166 | -ENOSYS; | |
167 | } | |
168 | EXPORT_SYMBOL(ib_modify_ah); | |
169 | ||
170 | int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr) | |
171 | { | |
172 | return ah->device->query_ah ? | |
173 | ah->device->query_ah(ah, ah_attr) : | |
174 | -ENOSYS; | |
175 | } | |
176 | EXPORT_SYMBOL(ib_query_ah); | |
177 | ||
178 | int ib_destroy_ah(struct ib_ah *ah) | |
179 | { | |
180 | struct ib_pd *pd; | |
181 | int ret; | |
182 | ||
183 | pd = ah->pd; | |
184 | ret = ah->device->destroy_ah(ah); | |
185 | if (!ret) | |
186 | atomic_dec(&pd->usecnt); | |
187 | ||
188 | return ret; | |
189 | } | |
190 | EXPORT_SYMBOL(ib_destroy_ah); | |
191 | ||
d41fcc67 RD |
192 | /* Shared receive queues */ |
193 | ||
194 | struct ib_srq *ib_create_srq(struct ib_pd *pd, | |
195 | struct ib_srq_init_attr *srq_init_attr) | |
196 | { | |
197 | struct ib_srq *srq; | |
198 | ||
199 | if (!pd->device->create_srq) | |
200 | return ERR_PTR(-ENOSYS); | |
201 | ||
202 | srq = pd->device->create_srq(pd, srq_init_attr, NULL); | |
203 | ||
204 | if (!IS_ERR(srq)) { | |
205 | srq->device = pd->device; | |
206 | srq->pd = pd; | |
207 | srq->uobject = NULL; | |
208 | srq->event_handler = srq_init_attr->event_handler; | |
209 | srq->srq_context = srq_init_attr->srq_context; | |
210 | atomic_inc(&pd->usecnt); | |
211 | atomic_set(&srq->usecnt, 0); | |
212 | } | |
213 | ||
214 | return srq; | |
215 | } | |
216 | EXPORT_SYMBOL(ib_create_srq); | |
217 | ||
218 | int ib_modify_srq(struct ib_srq *srq, | |
219 | struct ib_srq_attr *srq_attr, | |
220 | enum ib_srq_attr_mask srq_attr_mask) | |
221 | { | |
222 | return srq->device->modify_srq(srq, srq_attr, srq_attr_mask); | |
223 | } | |
224 | EXPORT_SYMBOL(ib_modify_srq); | |
225 | ||
226 | int ib_query_srq(struct ib_srq *srq, | |
227 | struct ib_srq_attr *srq_attr) | |
228 | { | |
229 | return srq->device->query_srq ? | |
230 | srq->device->query_srq(srq, srq_attr) : -ENOSYS; | |
231 | } | |
232 | EXPORT_SYMBOL(ib_query_srq); | |
233 | ||
234 | int ib_destroy_srq(struct ib_srq *srq) | |
235 | { | |
236 | struct ib_pd *pd; | |
237 | int ret; | |
238 | ||
239 | if (atomic_read(&srq->usecnt)) | |
240 | return -EBUSY; | |
241 | ||
242 | pd = srq->pd; | |
243 | ||
244 | ret = srq->device->destroy_srq(srq); | |
245 | if (!ret) | |
246 | atomic_dec(&pd->usecnt); | |
247 | ||
248 | return ret; | |
249 | } | |
250 | EXPORT_SYMBOL(ib_destroy_srq); | |
251 | ||
1da177e4 LT |
252 | /* Queue pairs */ |
253 | ||
254 | struct ib_qp *ib_create_qp(struct ib_pd *pd, | |
255 | struct ib_qp_init_attr *qp_init_attr) | |
256 | { | |
257 | struct ib_qp *qp; | |
258 | ||
b5e81bf5 | 259 | qp = pd->device->create_qp(pd, qp_init_attr, NULL); |
1da177e4 LT |
260 | |
261 | if (!IS_ERR(qp)) { | |
262 | qp->device = pd->device; | |
263 | qp->pd = pd; | |
264 | qp->send_cq = qp_init_attr->send_cq; | |
265 | qp->recv_cq = qp_init_attr->recv_cq; | |
266 | qp->srq = qp_init_attr->srq; | |
b5e81bf5 | 267 | qp->uobject = NULL; |
1da177e4 LT |
268 | qp->event_handler = qp_init_attr->event_handler; |
269 | qp->qp_context = qp_init_attr->qp_context; | |
270 | qp->qp_type = qp_init_attr->qp_type; | |
271 | atomic_inc(&pd->usecnt); | |
272 | atomic_inc(&qp_init_attr->send_cq->usecnt); | |
273 | atomic_inc(&qp_init_attr->recv_cq->usecnt); | |
274 | if (qp_init_attr->srq) | |
275 | atomic_inc(&qp_init_attr->srq->usecnt); | |
276 | } | |
277 | ||
278 | return qp; | |
279 | } | |
280 | EXPORT_SYMBOL(ib_create_qp); | |
281 | ||
8a51866f RD |
282 | static const struct { |
283 | int valid; | |
284 | enum ib_qp_attr_mask req_param[IB_QPT_RAW_ETY + 1]; | |
285 | enum ib_qp_attr_mask opt_param[IB_QPT_RAW_ETY + 1]; | |
286 | } qp_state_table[IB_QPS_ERR + 1][IB_QPS_ERR + 1] = { | |
287 | [IB_QPS_RESET] = { | |
288 | [IB_QPS_RESET] = { .valid = 1 }, | |
289 | [IB_QPS_ERR] = { .valid = 1 }, | |
290 | [IB_QPS_INIT] = { | |
291 | .valid = 1, | |
292 | .req_param = { | |
293 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | | |
294 | IB_QP_PORT | | |
295 | IB_QP_QKEY), | |
296 | [IB_QPT_UC] = (IB_QP_PKEY_INDEX | | |
297 | IB_QP_PORT | | |
298 | IB_QP_ACCESS_FLAGS), | |
299 | [IB_QPT_RC] = (IB_QP_PKEY_INDEX | | |
300 | IB_QP_PORT | | |
301 | IB_QP_ACCESS_FLAGS), | |
302 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | | |
303 | IB_QP_QKEY), | |
304 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | | |
305 | IB_QP_QKEY), | |
306 | } | |
307 | }, | |
308 | }, | |
309 | [IB_QPS_INIT] = { | |
310 | [IB_QPS_RESET] = { .valid = 1 }, | |
311 | [IB_QPS_ERR] = { .valid = 1 }, | |
312 | [IB_QPS_INIT] = { | |
313 | .valid = 1, | |
314 | .opt_param = { | |
315 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | | |
316 | IB_QP_PORT | | |
317 | IB_QP_QKEY), | |
318 | [IB_QPT_UC] = (IB_QP_PKEY_INDEX | | |
319 | IB_QP_PORT | | |
320 | IB_QP_ACCESS_FLAGS), | |
321 | [IB_QPT_RC] = (IB_QP_PKEY_INDEX | | |
322 | IB_QP_PORT | | |
323 | IB_QP_ACCESS_FLAGS), | |
324 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | | |
325 | IB_QP_QKEY), | |
326 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | | |
327 | IB_QP_QKEY), | |
328 | } | |
329 | }, | |
330 | [IB_QPS_RTR] = { | |
331 | .valid = 1, | |
332 | .req_param = { | |
333 | [IB_QPT_UC] = (IB_QP_AV | | |
334 | IB_QP_PATH_MTU | | |
335 | IB_QP_DEST_QPN | | |
336 | IB_QP_RQ_PSN), | |
337 | [IB_QPT_RC] = (IB_QP_AV | | |
338 | IB_QP_PATH_MTU | | |
339 | IB_QP_DEST_QPN | | |
340 | IB_QP_RQ_PSN | | |
341 | IB_QP_MAX_DEST_RD_ATOMIC | | |
342 | IB_QP_MIN_RNR_TIMER), | |
343 | }, | |
344 | .opt_param = { | |
345 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | | |
346 | IB_QP_QKEY), | |
347 | [IB_QPT_UC] = (IB_QP_ALT_PATH | | |
348 | IB_QP_ACCESS_FLAGS | | |
349 | IB_QP_PKEY_INDEX), | |
350 | [IB_QPT_RC] = (IB_QP_ALT_PATH | | |
351 | IB_QP_ACCESS_FLAGS | | |
352 | IB_QP_PKEY_INDEX), | |
353 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | | |
354 | IB_QP_QKEY), | |
355 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | | |
356 | IB_QP_QKEY), | |
357 | } | |
358 | } | |
359 | }, | |
360 | [IB_QPS_RTR] = { | |
361 | [IB_QPS_RESET] = { .valid = 1 }, | |
362 | [IB_QPS_ERR] = { .valid = 1 }, | |
363 | [IB_QPS_RTS] = { | |
364 | .valid = 1, | |
365 | .req_param = { | |
366 | [IB_QPT_UD] = IB_QP_SQ_PSN, | |
367 | [IB_QPT_UC] = IB_QP_SQ_PSN, | |
368 | [IB_QPT_RC] = (IB_QP_TIMEOUT | | |
369 | IB_QP_RETRY_CNT | | |
370 | IB_QP_RNR_RETRY | | |
371 | IB_QP_SQ_PSN | | |
372 | IB_QP_MAX_QP_RD_ATOMIC), | |
373 | [IB_QPT_SMI] = IB_QP_SQ_PSN, | |
374 | [IB_QPT_GSI] = IB_QP_SQ_PSN, | |
375 | }, | |
376 | .opt_param = { | |
377 | [IB_QPT_UD] = (IB_QP_CUR_STATE | | |
378 | IB_QP_QKEY), | |
379 | [IB_QPT_UC] = (IB_QP_CUR_STATE | | |
380 | IB_QP_ALT_PATH | | |
381 | IB_QP_ACCESS_FLAGS | | |
382 | IB_QP_PATH_MIG_STATE), | |
383 | [IB_QPT_RC] = (IB_QP_CUR_STATE | | |
384 | IB_QP_ALT_PATH | | |
385 | IB_QP_ACCESS_FLAGS | | |
386 | IB_QP_MIN_RNR_TIMER | | |
387 | IB_QP_PATH_MIG_STATE), | |
388 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | | |
389 | IB_QP_QKEY), | |
390 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | | |
391 | IB_QP_QKEY), | |
392 | } | |
393 | } | |
394 | }, | |
395 | [IB_QPS_RTS] = { | |
396 | [IB_QPS_RESET] = { .valid = 1 }, | |
397 | [IB_QPS_ERR] = { .valid = 1 }, | |
398 | [IB_QPS_RTS] = { | |
399 | .valid = 1, | |
400 | .opt_param = { | |
401 | [IB_QPT_UD] = (IB_QP_CUR_STATE | | |
402 | IB_QP_QKEY), | |
4546d31d DB |
403 | [IB_QPT_UC] = (IB_QP_CUR_STATE | |
404 | IB_QP_ACCESS_FLAGS | | |
8a51866f RD |
405 | IB_QP_ALT_PATH | |
406 | IB_QP_PATH_MIG_STATE), | |
4546d31d DB |
407 | [IB_QPT_RC] = (IB_QP_CUR_STATE | |
408 | IB_QP_ACCESS_FLAGS | | |
8a51866f RD |
409 | IB_QP_ALT_PATH | |
410 | IB_QP_PATH_MIG_STATE | | |
411 | IB_QP_MIN_RNR_TIMER), | |
412 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | | |
413 | IB_QP_QKEY), | |
414 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | | |
415 | IB_QP_QKEY), | |
416 | } | |
417 | }, | |
418 | [IB_QPS_SQD] = { | |
419 | .valid = 1, | |
420 | .opt_param = { | |
421 | [IB_QPT_UD] = IB_QP_EN_SQD_ASYNC_NOTIFY, | |
422 | [IB_QPT_UC] = IB_QP_EN_SQD_ASYNC_NOTIFY, | |
423 | [IB_QPT_RC] = IB_QP_EN_SQD_ASYNC_NOTIFY, | |
424 | [IB_QPT_SMI] = IB_QP_EN_SQD_ASYNC_NOTIFY, | |
425 | [IB_QPT_GSI] = IB_QP_EN_SQD_ASYNC_NOTIFY | |
426 | } | |
427 | }, | |
428 | }, | |
429 | [IB_QPS_SQD] = { | |
430 | [IB_QPS_RESET] = { .valid = 1 }, | |
431 | [IB_QPS_ERR] = { .valid = 1 }, | |
432 | [IB_QPS_RTS] = { | |
433 | .valid = 1, | |
434 | .opt_param = { | |
435 | [IB_QPT_UD] = (IB_QP_CUR_STATE | | |
436 | IB_QP_QKEY), | |
437 | [IB_QPT_UC] = (IB_QP_CUR_STATE | | |
438 | IB_QP_ALT_PATH | | |
439 | IB_QP_ACCESS_FLAGS | | |
440 | IB_QP_PATH_MIG_STATE), | |
441 | [IB_QPT_RC] = (IB_QP_CUR_STATE | | |
442 | IB_QP_ALT_PATH | | |
443 | IB_QP_ACCESS_FLAGS | | |
444 | IB_QP_MIN_RNR_TIMER | | |
445 | IB_QP_PATH_MIG_STATE), | |
446 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | | |
447 | IB_QP_QKEY), | |
448 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | | |
449 | IB_QP_QKEY), | |
450 | } | |
451 | }, | |
452 | [IB_QPS_SQD] = { | |
453 | .valid = 1, | |
454 | .opt_param = { | |
455 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | | |
456 | IB_QP_QKEY), | |
457 | [IB_QPT_UC] = (IB_QP_AV | | |
8a51866f RD |
458 | IB_QP_ALT_PATH | |
459 | IB_QP_ACCESS_FLAGS | | |
460 | IB_QP_PKEY_INDEX | | |
461 | IB_QP_PATH_MIG_STATE), | |
462 | [IB_QPT_RC] = (IB_QP_PORT | | |
463 | IB_QP_AV | | |
464 | IB_QP_TIMEOUT | | |
465 | IB_QP_RETRY_CNT | | |
466 | IB_QP_RNR_RETRY | | |
467 | IB_QP_MAX_QP_RD_ATOMIC | | |
468 | IB_QP_MAX_DEST_RD_ATOMIC | | |
8a51866f RD |
469 | IB_QP_ALT_PATH | |
470 | IB_QP_ACCESS_FLAGS | | |
471 | IB_QP_PKEY_INDEX | | |
472 | IB_QP_MIN_RNR_TIMER | | |
473 | IB_QP_PATH_MIG_STATE), | |
474 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | | |
475 | IB_QP_QKEY), | |
476 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | | |
477 | IB_QP_QKEY), | |
478 | } | |
479 | } | |
480 | }, | |
481 | [IB_QPS_SQE] = { | |
482 | [IB_QPS_RESET] = { .valid = 1 }, | |
483 | [IB_QPS_ERR] = { .valid = 1 }, | |
484 | [IB_QPS_RTS] = { | |
485 | .valid = 1, | |
486 | .opt_param = { | |
487 | [IB_QPT_UD] = (IB_QP_CUR_STATE | | |
488 | IB_QP_QKEY), | |
489 | [IB_QPT_UC] = (IB_QP_CUR_STATE | | |
490 | IB_QP_ACCESS_FLAGS), | |
491 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | | |
492 | IB_QP_QKEY), | |
493 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | | |
494 | IB_QP_QKEY), | |
495 | } | |
496 | } | |
497 | }, | |
498 | [IB_QPS_ERR] = { | |
499 | [IB_QPS_RESET] = { .valid = 1 }, | |
500 | [IB_QPS_ERR] = { .valid = 1 } | |
501 | } | |
502 | }; | |
503 | ||
504 | int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state, | |
505 | enum ib_qp_type type, enum ib_qp_attr_mask mask) | |
506 | { | |
507 | enum ib_qp_attr_mask req_param, opt_param; | |
508 | ||
509 | if (cur_state < 0 || cur_state > IB_QPS_ERR || | |
510 | next_state < 0 || next_state > IB_QPS_ERR) | |
511 | return 0; | |
512 | ||
513 | if (mask & IB_QP_CUR_STATE && | |
514 | cur_state != IB_QPS_RTR && cur_state != IB_QPS_RTS && | |
515 | cur_state != IB_QPS_SQD && cur_state != IB_QPS_SQE) | |
516 | return 0; | |
517 | ||
518 | if (!qp_state_table[cur_state][next_state].valid) | |
519 | return 0; | |
520 | ||
521 | req_param = qp_state_table[cur_state][next_state].req_param[type]; | |
522 | opt_param = qp_state_table[cur_state][next_state].opt_param[type]; | |
523 | ||
524 | if ((mask & req_param) != req_param) | |
525 | return 0; | |
526 | ||
527 | if (mask & ~(req_param | opt_param | IB_QP_STATE)) | |
528 | return 0; | |
529 | ||
530 | return 1; | |
531 | } | |
532 | EXPORT_SYMBOL(ib_modify_qp_is_ok); | |
533 | ||
1da177e4 LT |
534 | int ib_modify_qp(struct ib_qp *qp, |
535 | struct ib_qp_attr *qp_attr, | |
536 | int qp_attr_mask) | |
537 | { | |
538 | return qp->device->modify_qp(qp, qp_attr, qp_attr_mask); | |
539 | } | |
540 | EXPORT_SYMBOL(ib_modify_qp); | |
541 | ||
542 | int ib_query_qp(struct ib_qp *qp, | |
543 | struct ib_qp_attr *qp_attr, | |
544 | int qp_attr_mask, | |
545 | struct ib_qp_init_attr *qp_init_attr) | |
546 | { | |
547 | return qp->device->query_qp ? | |
548 | qp->device->query_qp(qp, qp_attr, qp_attr_mask, qp_init_attr) : | |
549 | -ENOSYS; | |
550 | } | |
551 | EXPORT_SYMBOL(ib_query_qp); | |
552 | ||
553 | int ib_destroy_qp(struct ib_qp *qp) | |
554 | { | |
555 | struct ib_pd *pd; | |
556 | struct ib_cq *scq, *rcq; | |
557 | struct ib_srq *srq; | |
558 | int ret; | |
559 | ||
560 | pd = qp->pd; | |
561 | scq = qp->send_cq; | |
562 | rcq = qp->recv_cq; | |
563 | srq = qp->srq; | |
564 | ||
565 | ret = qp->device->destroy_qp(qp); | |
566 | if (!ret) { | |
567 | atomic_dec(&pd->usecnt); | |
568 | atomic_dec(&scq->usecnt); | |
569 | atomic_dec(&rcq->usecnt); | |
570 | if (srq) | |
571 | atomic_dec(&srq->usecnt); | |
572 | } | |
573 | ||
574 | return ret; | |
575 | } | |
576 | EXPORT_SYMBOL(ib_destroy_qp); | |
577 | ||
578 | /* Completion queues */ | |
579 | ||
580 | struct ib_cq *ib_create_cq(struct ib_device *device, | |
581 | ib_comp_handler comp_handler, | |
582 | void (*event_handler)(struct ib_event *, void *), | |
583 | void *cq_context, int cqe) | |
584 | { | |
585 | struct ib_cq *cq; | |
586 | ||
b5e81bf5 | 587 | cq = device->create_cq(device, cqe, NULL, NULL); |
1da177e4 LT |
588 | |
589 | if (!IS_ERR(cq)) { | |
590 | cq->device = device; | |
b5e81bf5 | 591 | cq->uobject = NULL; |
1da177e4 LT |
592 | cq->comp_handler = comp_handler; |
593 | cq->event_handler = event_handler; | |
594 | cq->cq_context = cq_context; | |
595 | atomic_set(&cq->usecnt, 0); | |
596 | } | |
597 | ||
598 | return cq; | |
599 | } | |
600 | EXPORT_SYMBOL(ib_create_cq); | |
601 | ||
602 | int ib_destroy_cq(struct ib_cq *cq) | |
603 | { | |
604 | if (atomic_read(&cq->usecnt)) | |
605 | return -EBUSY; | |
606 | ||
607 | return cq->device->destroy_cq(cq); | |
608 | } | |
609 | EXPORT_SYMBOL(ib_destroy_cq); | |
610 | ||
a74cd4af | 611 | int ib_resize_cq(struct ib_cq *cq, int cqe) |
1da177e4 | 612 | { |
40de2e54 | 613 | return cq->device->resize_cq ? |
33b9b3ee | 614 | cq->device->resize_cq(cq, cqe, NULL) : -ENOSYS; |
1da177e4 LT |
615 | } |
616 | EXPORT_SYMBOL(ib_resize_cq); | |
617 | ||
618 | /* Memory regions */ | |
619 | ||
620 | struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags) | |
621 | { | |
622 | struct ib_mr *mr; | |
623 | ||
624 | mr = pd->device->get_dma_mr(pd, mr_access_flags); | |
625 | ||
626 | if (!IS_ERR(mr)) { | |
b5e81bf5 RD |
627 | mr->device = pd->device; |
628 | mr->pd = pd; | |
629 | mr->uobject = NULL; | |
1da177e4 LT |
630 | atomic_inc(&pd->usecnt); |
631 | atomic_set(&mr->usecnt, 0); | |
632 | } | |
633 | ||
634 | return mr; | |
635 | } | |
636 | EXPORT_SYMBOL(ib_get_dma_mr); | |
637 | ||
638 | struct ib_mr *ib_reg_phys_mr(struct ib_pd *pd, | |
639 | struct ib_phys_buf *phys_buf_array, | |
640 | int num_phys_buf, | |
641 | int mr_access_flags, | |
642 | u64 *iova_start) | |
643 | { | |
644 | struct ib_mr *mr; | |
645 | ||
646 | mr = pd->device->reg_phys_mr(pd, phys_buf_array, num_phys_buf, | |
647 | mr_access_flags, iova_start); | |
648 | ||
649 | if (!IS_ERR(mr)) { | |
b5e81bf5 RD |
650 | mr->device = pd->device; |
651 | mr->pd = pd; | |
652 | mr->uobject = NULL; | |
1da177e4 LT |
653 | atomic_inc(&pd->usecnt); |
654 | atomic_set(&mr->usecnt, 0); | |
655 | } | |
656 | ||
657 | return mr; | |
658 | } | |
659 | EXPORT_SYMBOL(ib_reg_phys_mr); | |
660 | ||
661 | int ib_rereg_phys_mr(struct ib_mr *mr, | |
662 | int mr_rereg_mask, | |
663 | struct ib_pd *pd, | |
664 | struct ib_phys_buf *phys_buf_array, | |
665 | int num_phys_buf, | |
666 | int mr_access_flags, | |
667 | u64 *iova_start) | |
668 | { | |
669 | struct ib_pd *old_pd; | |
670 | int ret; | |
671 | ||
672 | if (!mr->device->rereg_phys_mr) | |
673 | return -ENOSYS; | |
674 | ||
675 | if (atomic_read(&mr->usecnt)) | |
676 | return -EBUSY; | |
677 | ||
678 | old_pd = mr->pd; | |
679 | ||
680 | ret = mr->device->rereg_phys_mr(mr, mr_rereg_mask, pd, | |
681 | phys_buf_array, num_phys_buf, | |
682 | mr_access_flags, iova_start); | |
683 | ||
684 | if (!ret && (mr_rereg_mask & IB_MR_REREG_PD)) { | |
685 | atomic_dec(&old_pd->usecnt); | |
686 | atomic_inc(&pd->usecnt); | |
687 | } | |
688 | ||
689 | return ret; | |
690 | } | |
691 | EXPORT_SYMBOL(ib_rereg_phys_mr); | |
692 | ||
693 | int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr) | |
694 | { | |
695 | return mr->device->query_mr ? | |
696 | mr->device->query_mr(mr, mr_attr) : -ENOSYS; | |
697 | } | |
698 | EXPORT_SYMBOL(ib_query_mr); | |
699 | ||
700 | int ib_dereg_mr(struct ib_mr *mr) | |
701 | { | |
702 | struct ib_pd *pd; | |
703 | int ret; | |
704 | ||
705 | if (atomic_read(&mr->usecnt)) | |
706 | return -EBUSY; | |
707 | ||
708 | pd = mr->pd; | |
709 | ret = mr->device->dereg_mr(mr); | |
710 | if (!ret) | |
711 | atomic_dec(&pd->usecnt); | |
712 | ||
713 | return ret; | |
714 | } | |
715 | EXPORT_SYMBOL(ib_dereg_mr); | |
716 | ||
717 | /* Memory windows */ | |
718 | ||
719 | struct ib_mw *ib_alloc_mw(struct ib_pd *pd) | |
720 | { | |
721 | struct ib_mw *mw; | |
722 | ||
723 | if (!pd->device->alloc_mw) | |
724 | return ERR_PTR(-ENOSYS); | |
725 | ||
726 | mw = pd->device->alloc_mw(pd); | |
727 | if (!IS_ERR(mw)) { | |
b5e81bf5 RD |
728 | mw->device = pd->device; |
729 | mw->pd = pd; | |
730 | mw->uobject = NULL; | |
1da177e4 LT |
731 | atomic_inc(&pd->usecnt); |
732 | } | |
733 | ||
734 | return mw; | |
735 | } | |
736 | EXPORT_SYMBOL(ib_alloc_mw); | |
737 | ||
738 | int ib_dealloc_mw(struct ib_mw *mw) | |
739 | { | |
740 | struct ib_pd *pd; | |
741 | int ret; | |
742 | ||
743 | pd = mw->pd; | |
744 | ret = mw->device->dealloc_mw(mw); | |
745 | if (!ret) | |
746 | atomic_dec(&pd->usecnt); | |
747 | ||
748 | return ret; | |
749 | } | |
750 | EXPORT_SYMBOL(ib_dealloc_mw); | |
751 | ||
752 | /* "Fast" memory regions */ | |
753 | ||
754 | struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd, | |
755 | int mr_access_flags, | |
756 | struct ib_fmr_attr *fmr_attr) | |
757 | { | |
758 | struct ib_fmr *fmr; | |
759 | ||
760 | if (!pd->device->alloc_fmr) | |
761 | return ERR_PTR(-ENOSYS); | |
762 | ||
763 | fmr = pd->device->alloc_fmr(pd, mr_access_flags, fmr_attr); | |
764 | if (!IS_ERR(fmr)) { | |
765 | fmr->device = pd->device; | |
766 | fmr->pd = pd; | |
767 | atomic_inc(&pd->usecnt); | |
768 | } | |
769 | ||
770 | return fmr; | |
771 | } | |
772 | EXPORT_SYMBOL(ib_alloc_fmr); | |
773 | ||
774 | int ib_unmap_fmr(struct list_head *fmr_list) | |
775 | { | |
776 | struct ib_fmr *fmr; | |
777 | ||
778 | if (list_empty(fmr_list)) | |
779 | return 0; | |
780 | ||
781 | fmr = list_entry(fmr_list->next, struct ib_fmr, list); | |
782 | return fmr->device->unmap_fmr(fmr_list); | |
783 | } | |
784 | EXPORT_SYMBOL(ib_unmap_fmr); | |
785 | ||
786 | int ib_dealloc_fmr(struct ib_fmr *fmr) | |
787 | { | |
788 | struct ib_pd *pd; | |
789 | int ret; | |
790 | ||
791 | pd = fmr->pd; | |
792 | ret = fmr->device->dealloc_fmr(fmr); | |
793 | if (!ret) | |
794 | atomic_dec(&pd->usecnt); | |
795 | ||
796 | return ret; | |
797 | } | |
798 | EXPORT_SYMBOL(ib_dealloc_fmr); | |
799 | ||
800 | /* Multicast groups */ | |
801 | ||
802 | int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) | |
803 | { | |
0c33aeed JM |
804 | if (!qp->device->attach_mcast) |
805 | return -ENOSYS; | |
806 | if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD) | |
807 | return -EINVAL; | |
808 | ||
809 | return qp->device->attach_mcast(qp, gid, lid); | |
1da177e4 LT |
810 | } |
811 | EXPORT_SYMBOL(ib_attach_mcast); | |
812 | ||
813 | int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) | |
814 | { | |
0c33aeed JM |
815 | if (!qp->device->detach_mcast) |
816 | return -ENOSYS; | |
817 | if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD) | |
818 | return -EINVAL; | |
819 | ||
820 | return qp->device->detach_mcast(qp, gid, lid); | |
1da177e4 LT |
821 | } |
822 | EXPORT_SYMBOL(ib_detach_mcast); |