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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 | ||
07ebafba TT |
82 | enum rdma_transport_type |
83 | rdma_node_get_transport(enum rdma_node_type node_type) | |
84 | { | |
85 | switch (node_type) { | |
86 | case RDMA_NODE_IB_CA: | |
87 | case RDMA_NODE_IB_SWITCH: | |
88 | case RDMA_NODE_IB_ROUTER: | |
89 | return RDMA_TRANSPORT_IB; | |
90 | case RDMA_NODE_RNIC: | |
91 | return RDMA_TRANSPORT_IWARP; | |
92 | default: | |
93 | BUG(); | |
94 | return 0; | |
95 | } | |
96 | } | |
97 | EXPORT_SYMBOL(rdma_node_get_transport); | |
98 | ||
1da177e4 LT |
99 | /* Protection domains */ |
100 | ||
101 | struct ib_pd *ib_alloc_pd(struct ib_device *device) | |
102 | { | |
103 | struct ib_pd *pd; | |
104 | ||
b5e81bf5 | 105 | pd = device->alloc_pd(device, NULL, NULL); |
1da177e4 LT |
106 | |
107 | if (!IS_ERR(pd)) { | |
b5e81bf5 RD |
108 | pd->device = device; |
109 | pd->uobject = NULL; | |
1da177e4 LT |
110 | atomic_set(&pd->usecnt, 0); |
111 | } | |
112 | ||
113 | return pd; | |
114 | } | |
115 | EXPORT_SYMBOL(ib_alloc_pd); | |
116 | ||
117 | int ib_dealloc_pd(struct ib_pd *pd) | |
118 | { | |
119 | if (atomic_read(&pd->usecnt)) | |
120 | return -EBUSY; | |
121 | ||
122 | return pd->device->dealloc_pd(pd); | |
123 | } | |
124 | EXPORT_SYMBOL(ib_dealloc_pd); | |
125 | ||
126 | /* Address handles */ | |
127 | ||
128 | struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr) | |
129 | { | |
130 | struct ib_ah *ah; | |
131 | ||
132 | ah = pd->device->create_ah(pd, ah_attr); | |
133 | ||
134 | if (!IS_ERR(ah)) { | |
b5e81bf5 RD |
135 | ah->device = pd->device; |
136 | ah->pd = pd; | |
137 | ah->uobject = NULL; | |
1da177e4 LT |
138 | atomic_inc(&pd->usecnt); |
139 | } | |
140 | ||
141 | return ah; | |
142 | } | |
143 | EXPORT_SYMBOL(ib_create_ah); | |
144 | ||
4e00d694 SH |
145 | int ib_init_ah_from_wc(struct ib_device *device, u8 port_num, struct ib_wc *wc, |
146 | struct ib_grh *grh, struct ib_ah_attr *ah_attr) | |
513789ed | 147 | { |
513789ed HR |
148 | u32 flow_class; |
149 | u16 gid_index; | |
150 | int ret; | |
151 | ||
4e00d694 SH |
152 | memset(ah_attr, 0, sizeof *ah_attr); |
153 | ah_attr->dlid = wc->slid; | |
154 | ah_attr->sl = wc->sl; | |
155 | ah_attr->src_path_bits = wc->dlid_path_bits; | |
156 | ah_attr->port_num = port_num; | |
513789ed HR |
157 | |
158 | if (wc->wc_flags & IB_WC_GRH) { | |
4e00d694 SH |
159 | ah_attr->ah_flags = IB_AH_GRH; |
160 | ah_attr->grh.dgid = grh->sgid; | |
513789ed | 161 | |
4e00d694 | 162 | ret = ib_find_cached_gid(device, &grh->dgid, &port_num, |
513789ed HR |
163 | &gid_index); |
164 | if (ret) | |
4e00d694 | 165 | return ret; |
513789ed | 166 | |
4e00d694 | 167 | ah_attr->grh.sgid_index = (u8) gid_index; |
497677ab | 168 | flow_class = be32_to_cpu(grh->version_tclass_flow); |
4e00d694 SH |
169 | ah_attr->grh.flow_label = flow_class & 0xFFFFF; |
170 | ah_attr->grh.hop_limit = grh->hop_limit; | |
171 | ah_attr->grh.traffic_class = (flow_class >> 20) & 0xFF; | |
513789ed | 172 | } |
4e00d694 SH |
173 | return 0; |
174 | } | |
175 | EXPORT_SYMBOL(ib_init_ah_from_wc); | |
176 | ||
177 | struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc, | |
178 | struct ib_grh *grh, u8 port_num) | |
179 | { | |
180 | struct ib_ah_attr ah_attr; | |
181 | int ret; | |
182 | ||
183 | ret = ib_init_ah_from_wc(pd->device, port_num, wc, grh, &ah_attr); | |
184 | if (ret) | |
185 | return ERR_PTR(ret); | |
513789ed HR |
186 | |
187 | return ib_create_ah(pd, &ah_attr); | |
188 | } | |
189 | EXPORT_SYMBOL(ib_create_ah_from_wc); | |
190 | ||
1da177e4 LT |
191 | int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr) |
192 | { | |
193 | return ah->device->modify_ah ? | |
194 | ah->device->modify_ah(ah, ah_attr) : | |
195 | -ENOSYS; | |
196 | } | |
197 | EXPORT_SYMBOL(ib_modify_ah); | |
198 | ||
199 | int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr) | |
200 | { | |
201 | return ah->device->query_ah ? | |
202 | ah->device->query_ah(ah, ah_attr) : | |
203 | -ENOSYS; | |
204 | } | |
205 | EXPORT_SYMBOL(ib_query_ah); | |
206 | ||
207 | int ib_destroy_ah(struct ib_ah *ah) | |
208 | { | |
209 | struct ib_pd *pd; | |
210 | int ret; | |
211 | ||
212 | pd = ah->pd; | |
213 | ret = ah->device->destroy_ah(ah); | |
214 | if (!ret) | |
215 | atomic_dec(&pd->usecnt); | |
216 | ||
217 | return ret; | |
218 | } | |
219 | EXPORT_SYMBOL(ib_destroy_ah); | |
220 | ||
d41fcc67 RD |
221 | /* Shared receive queues */ |
222 | ||
223 | struct ib_srq *ib_create_srq(struct ib_pd *pd, | |
224 | struct ib_srq_init_attr *srq_init_attr) | |
225 | { | |
226 | struct ib_srq *srq; | |
227 | ||
228 | if (!pd->device->create_srq) | |
229 | return ERR_PTR(-ENOSYS); | |
230 | ||
231 | srq = pd->device->create_srq(pd, srq_init_attr, NULL); | |
232 | ||
233 | if (!IS_ERR(srq)) { | |
234 | srq->device = pd->device; | |
235 | srq->pd = pd; | |
236 | srq->uobject = NULL; | |
237 | srq->event_handler = srq_init_attr->event_handler; | |
238 | srq->srq_context = srq_init_attr->srq_context; | |
239 | atomic_inc(&pd->usecnt); | |
240 | atomic_set(&srq->usecnt, 0); | |
241 | } | |
242 | ||
243 | return srq; | |
244 | } | |
245 | EXPORT_SYMBOL(ib_create_srq); | |
246 | ||
247 | int ib_modify_srq(struct ib_srq *srq, | |
248 | struct ib_srq_attr *srq_attr, | |
249 | enum ib_srq_attr_mask srq_attr_mask) | |
250 | { | |
9bc57e2d | 251 | return srq->device->modify_srq(srq, srq_attr, srq_attr_mask, NULL); |
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 }, | |
318 | [IB_QPS_ERR] = { .valid = 1 }, | |
319 | [IB_QPS_INIT] = { | |
320 | .valid = 1, | |
321 | .req_param = { | |
322 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | | |
323 | IB_QP_PORT | | |
324 | IB_QP_QKEY), | |
325 | [IB_QPT_UC] = (IB_QP_PKEY_INDEX | | |
326 | IB_QP_PORT | | |
327 | IB_QP_ACCESS_FLAGS), | |
328 | [IB_QPT_RC] = (IB_QP_PKEY_INDEX | | |
329 | IB_QP_PORT | | |
330 | IB_QP_ACCESS_FLAGS), | |
331 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | | |
332 | IB_QP_QKEY), | |
333 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | | |
334 | IB_QP_QKEY), | |
335 | } | |
336 | }, | |
337 | }, | |
338 | [IB_QPS_INIT] = { | |
339 | [IB_QPS_RESET] = { .valid = 1 }, | |
340 | [IB_QPS_ERR] = { .valid = 1 }, | |
341 | [IB_QPS_INIT] = { | |
342 | .valid = 1, | |
343 | .opt_param = { | |
344 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | | |
345 | IB_QP_PORT | | |
346 | IB_QP_QKEY), | |
347 | [IB_QPT_UC] = (IB_QP_PKEY_INDEX | | |
348 | IB_QP_PORT | | |
349 | IB_QP_ACCESS_FLAGS), | |
350 | [IB_QPT_RC] = (IB_QP_PKEY_INDEX | | |
351 | IB_QP_PORT | | |
352 | IB_QP_ACCESS_FLAGS), | |
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 | [IB_QPS_RTR] = { | |
360 | .valid = 1, | |
361 | .req_param = { | |
362 | [IB_QPT_UC] = (IB_QP_AV | | |
363 | IB_QP_PATH_MTU | | |
364 | IB_QP_DEST_QPN | | |
365 | IB_QP_RQ_PSN), | |
366 | [IB_QPT_RC] = (IB_QP_AV | | |
367 | IB_QP_PATH_MTU | | |
368 | IB_QP_DEST_QPN | | |
369 | IB_QP_RQ_PSN | | |
370 | IB_QP_MAX_DEST_RD_ATOMIC | | |
371 | IB_QP_MIN_RNR_TIMER), | |
372 | }, | |
373 | .opt_param = { | |
374 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | | |
375 | IB_QP_QKEY), | |
376 | [IB_QPT_UC] = (IB_QP_ALT_PATH | | |
377 | IB_QP_ACCESS_FLAGS | | |
378 | IB_QP_PKEY_INDEX), | |
379 | [IB_QPT_RC] = (IB_QP_ALT_PATH | | |
380 | IB_QP_ACCESS_FLAGS | | |
381 | IB_QP_PKEY_INDEX), | |
382 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | | |
383 | IB_QP_QKEY), | |
384 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | | |
385 | IB_QP_QKEY), | |
386 | } | |
387 | } | |
388 | }, | |
389 | [IB_QPS_RTR] = { | |
390 | [IB_QPS_RESET] = { .valid = 1 }, | |
391 | [IB_QPS_ERR] = { .valid = 1 }, | |
392 | [IB_QPS_RTS] = { | |
393 | .valid = 1, | |
394 | .req_param = { | |
395 | [IB_QPT_UD] = IB_QP_SQ_PSN, | |
396 | [IB_QPT_UC] = IB_QP_SQ_PSN, | |
397 | [IB_QPT_RC] = (IB_QP_TIMEOUT | | |
398 | IB_QP_RETRY_CNT | | |
399 | IB_QP_RNR_RETRY | | |
400 | IB_QP_SQ_PSN | | |
401 | IB_QP_MAX_QP_RD_ATOMIC), | |
402 | [IB_QPT_SMI] = IB_QP_SQ_PSN, | |
403 | [IB_QPT_GSI] = IB_QP_SQ_PSN, | |
404 | }, | |
405 | .opt_param = { | |
406 | [IB_QPT_UD] = (IB_QP_CUR_STATE | | |
407 | IB_QP_QKEY), | |
408 | [IB_QPT_UC] = (IB_QP_CUR_STATE | | |
409 | IB_QP_ALT_PATH | | |
410 | IB_QP_ACCESS_FLAGS | | |
411 | IB_QP_PATH_MIG_STATE), | |
412 | [IB_QPT_RC] = (IB_QP_CUR_STATE | | |
413 | IB_QP_ALT_PATH | | |
414 | IB_QP_ACCESS_FLAGS | | |
415 | IB_QP_MIN_RNR_TIMER | | |
416 | IB_QP_PATH_MIG_STATE), | |
417 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | | |
418 | IB_QP_QKEY), | |
419 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | | |
420 | IB_QP_QKEY), | |
421 | } | |
422 | } | |
423 | }, | |
424 | [IB_QPS_RTS] = { | |
425 | [IB_QPS_RESET] = { .valid = 1 }, | |
426 | [IB_QPS_ERR] = { .valid = 1 }, | |
427 | [IB_QPS_RTS] = { | |
428 | .valid = 1, | |
429 | .opt_param = { | |
430 | [IB_QPT_UD] = (IB_QP_CUR_STATE | | |
431 | IB_QP_QKEY), | |
4546d31d DB |
432 | [IB_QPT_UC] = (IB_QP_CUR_STATE | |
433 | IB_QP_ACCESS_FLAGS | | |
8a51866f RD |
434 | IB_QP_ALT_PATH | |
435 | IB_QP_PATH_MIG_STATE), | |
4546d31d DB |
436 | [IB_QPT_RC] = (IB_QP_CUR_STATE | |
437 | IB_QP_ACCESS_FLAGS | | |
8a51866f RD |
438 | IB_QP_ALT_PATH | |
439 | IB_QP_PATH_MIG_STATE | | |
440 | IB_QP_MIN_RNR_TIMER), | |
441 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | | |
442 | IB_QP_QKEY), | |
443 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | | |
444 | IB_QP_QKEY), | |
445 | } | |
446 | }, | |
447 | [IB_QPS_SQD] = { | |
448 | .valid = 1, | |
449 | .opt_param = { | |
450 | [IB_QPT_UD] = IB_QP_EN_SQD_ASYNC_NOTIFY, | |
451 | [IB_QPT_UC] = IB_QP_EN_SQD_ASYNC_NOTIFY, | |
452 | [IB_QPT_RC] = IB_QP_EN_SQD_ASYNC_NOTIFY, | |
453 | [IB_QPT_SMI] = IB_QP_EN_SQD_ASYNC_NOTIFY, | |
454 | [IB_QPT_GSI] = IB_QP_EN_SQD_ASYNC_NOTIFY | |
455 | } | |
456 | }, | |
457 | }, | |
458 | [IB_QPS_SQD] = { | |
459 | [IB_QPS_RESET] = { .valid = 1 }, | |
460 | [IB_QPS_ERR] = { .valid = 1 }, | |
461 | [IB_QPS_RTS] = { | |
462 | .valid = 1, | |
463 | .opt_param = { | |
464 | [IB_QPT_UD] = (IB_QP_CUR_STATE | | |
465 | IB_QP_QKEY), | |
466 | [IB_QPT_UC] = (IB_QP_CUR_STATE | | |
467 | IB_QP_ALT_PATH | | |
468 | IB_QP_ACCESS_FLAGS | | |
469 | IB_QP_PATH_MIG_STATE), | |
470 | [IB_QPT_RC] = (IB_QP_CUR_STATE | | |
471 | IB_QP_ALT_PATH | | |
472 | IB_QP_ACCESS_FLAGS | | |
473 | IB_QP_MIN_RNR_TIMER | | |
474 | IB_QP_PATH_MIG_STATE), | |
475 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | | |
476 | IB_QP_QKEY), | |
477 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | | |
478 | IB_QP_QKEY), | |
479 | } | |
480 | }, | |
481 | [IB_QPS_SQD] = { | |
482 | .valid = 1, | |
483 | .opt_param = { | |
484 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | | |
485 | IB_QP_QKEY), | |
486 | [IB_QPT_UC] = (IB_QP_AV | | |
8a51866f RD |
487 | IB_QP_ALT_PATH | |
488 | IB_QP_ACCESS_FLAGS | | |
489 | IB_QP_PKEY_INDEX | | |
490 | IB_QP_PATH_MIG_STATE), | |
491 | [IB_QPT_RC] = (IB_QP_PORT | | |
492 | IB_QP_AV | | |
493 | IB_QP_TIMEOUT | | |
494 | IB_QP_RETRY_CNT | | |
495 | IB_QP_RNR_RETRY | | |
496 | IB_QP_MAX_QP_RD_ATOMIC | | |
497 | IB_QP_MAX_DEST_RD_ATOMIC | | |
8a51866f RD |
498 | IB_QP_ALT_PATH | |
499 | IB_QP_ACCESS_FLAGS | | |
500 | IB_QP_PKEY_INDEX | | |
501 | IB_QP_MIN_RNR_TIMER | | |
502 | IB_QP_PATH_MIG_STATE), | |
503 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | | |
504 | IB_QP_QKEY), | |
505 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | | |
506 | IB_QP_QKEY), | |
507 | } | |
508 | } | |
509 | }, | |
510 | [IB_QPS_SQE] = { | |
511 | [IB_QPS_RESET] = { .valid = 1 }, | |
512 | [IB_QPS_ERR] = { .valid = 1 }, | |
513 | [IB_QPS_RTS] = { | |
514 | .valid = 1, | |
515 | .opt_param = { | |
516 | [IB_QPT_UD] = (IB_QP_CUR_STATE | | |
517 | IB_QP_QKEY), | |
518 | [IB_QPT_UC] = (IB_QP_CUR_STATE | | |
519 | IB_QP_ACCESS_FLAGS), | |
520 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | | |
521 | IB_QP_QKEY), | |
522 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | | |
523 | IB_QP_QKEY), | |
524 | } | |
525 | } | |
526 | }, | |
527 | [IB_QPS_ERR] = { | |
528 | [IB_QPS_RESET] = { .valid = 1 }, | |
529 | [IB_QPS_ERR] = { .valid = 1 } | |
530 | } | |
531 | }; | |
532 | ||
533 | int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state, | |
534 | enum ib_qp_type type, enum ib_qp_attr_mask mask) | |
535 | { | |
536 | enum ib_qp_attr_mask req_param, opt_param; | |
537 | ||
538 | if (cur_state < 0 || cur_state > IB_QPS_ERR || | |
539 | next_state < 0 || next_state > IB_QPS_ERR) | |
540 | return 0; | |
541 | ||
542 | if (mask & IB_QP_CUR_STATE && | |
543 | cur_state != IB_QPS_RTR && cur_state != IB_QPS_RTS && | |
544 | cur_state != IB_QPS_SQD && cur_state != IB_QPS_SQE) | |
545 | return 0; | |
546 | ||
547 | if (!qp_state_table[cur_state][next_state].valid) | |
548 | return 0; | |
549 | ||
550 | req_param = qp_state_table[cur_state][next_state].req_param[type]; | |
551 | opt_param = qp_state_table[cur_state][next_state].opt_param[type]; | |
552 | ||
553 | if ((mask & req_param) != req_param) | |
554 | return 0; | |
555 | ||
556 | if (mask & ~(req_param | opt_param | IB_QP_STATE)) | |
557 | return 0; | |
558 | ||
559 | return 1; | |
560 | } | |
561 | EXPORT_SYMBOL(ib_modify_qp_is_ok); | |
562 | ||
1da177e4 LT |
563 | int ib_modify_qp(struct ib_qp *qp, |
564 | struct ib_qp_attr *qp_attr, | |
565 | int qp_attr_mask) | |
566 | { | |
9bc57e2d | 567 | return qp->device->modify_qp(qp, qp_attr, qp_attr_mask, NULL); |
1da177e4 LT |
568 | } |
569 | EXPORT_SYMBOL(ib_modify_qp); | |
570 | ||
571 | int ib_query_qp(struct ib_qp *qp, | |
572 | struct ib_qp_attr *qp_attr, | |
573 | int qp_attr_mask, | |
574 | struct ib_qp_init_attr *qp_init_attr) | |
575 | { | |
576 | return qp->device->query_qp ? | |
577 | qp->device->query_qp(qp, qp_attr, qp_attr_mask, qp_init_attr) : | |
578 | -ENOSYS; | |
579 | } | |
580 | EXPORT_SYMBOL(ib_query_qp); | |
581 | ||
582 | int ib_destroy_qp(struct ib_qp *qp) | |
583 | { | |
584 | struct ib_pd *pd; | |
585 | struct ib_cq *scq, *rcq; | |
586 | struct ib_srq *srq; | |
587 | int ret; | |
588 | ||
589 | pd = qp->pd; | |
590 | scq = qp->send_cq; | |
591 | rcq = qp->recv_cq; | |
592 | srq = qp->srq; | |
593 | ||
594 | ret = qp->device->destroy_qp(qp); | |
595 | if (!ret) { | |
596 | atomic_dec(&pd->usecnt); | |
597 | atomic_dec(&scq->usecnt); | |
598 | atomic_dec(&rcq->usecnt); | |
599 | if (srq) | |
600 | atomic_dec(&srq->usecnt); | |
601 | } | |
602 | ||
603 | return ret; | |
604 | } | |
605 | EXPORT_SYMBOL(ib_destroy_qp); | |
606 | ||
607 | /* Completion queues */ | |
608 | ||
609 | struct ib_cq *ib_create_cq(struct ib_device *device, | |
610 | ib_comp_handler comp_handler, | |
611 | void (*event_handler)(struct ib_event *, void *), | |
612 | void *cq_context, int cqe) | |
613 | { | |
614 | struct ib_cq *cq; | |
615 | ||
b5e81bf5 | 616 | cq = device->create_cq(device, cqe, NULL, NULL); |
1da177e4 LT |
617 | |
618 | if (!IS_ERR(cq)) { | |
619 | cq->device = device; | |
b5e81bf5 | 620 | cq->uobject = NULL; |
1da177e4 LT |
621 | cq->comp_handler = comp_handler; |
622 | cq->event_handler = event_handler; | |
623 | cq->cq_context = cq_context; | |
624 | atomic_set(&cq->usecnt, 0); | |
625 | } | |
626 | ||
627 | return cq; | |
628 | } | |
629 | EXPORT_SYMBOL(ib_create_cq); | |
630 | ||
631 | int ib_destroy_cq(struct ib_cq *cq) | |
632 | { | |
633 | if (atomic_read(&cq->usecnt)) | |
634 | return -EBUSY; | |
635 | ||
636 | return cq->device->destroy_cq(cq); | |
637 | } | |
638 | EXPORT_SYMBOL(ib_destroy_cq); | |
639 | ||
a74cd4af | 640 | int ib_resize_cq(struct ib_cq *cq, int cqe) |
1da177e4 | 641 | { |
40de2e54 | 642 | return cq->device->resize_cq ? |
33b9b3ee | 643 | cq->device->resize_cq(cq, cqe, NULL) : -ENOSYS; |
1da177e4 LT |
644 | } |
645 | EXPORT_SYMBOL(ib_resize_cq); | |
646 | ||
647 | /* Memory regions */ | |
648 | ||
649 | struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags) | |
650 | { | |
651 | struct ib_mr *mr; | |
652 | ||
653 | mr = pd->device->get_dma_mr(pd, mr_access_flags); | |
654 | ||
655 | if (!IS_ERR(mr)) { | |
b5e81bf5 RD |
656 | mr->device = pd->device; |
657 | mr->pd = pd; | |
658 | mr->uobject = NULL; | |
1da177e4 LT |
659 | atomic_inc(&pd->usecnt); |
660 | atomic_set(&mr->usecnt, 0); | |
661 | } | |
662 | ||
663 | return mr; | |
664 | } | |
665 | EXPORT_SYMBOL(ib_get_dma_mr); | |
666 | ||
667 | struct ib_mr *ib_reg_phys_mr(struct ib_pd *pd, | |
668 | struct ib_phys_buf *phys_buf_array, | |
669 | int num_phys_buf, | |
670 | int mr_access_flags, | |
671 | u64 *iova_start) | |
672 | { | |
673 | struct ib_mr *mr; | |
674 | ||
675 | mr = pd->device->reg_phys_mr(pd, phys_buf_array, num_phys_buf, | |
676 | mr_access_flags, iova_start); | |
677 | ||
678 | if (!IS_ERR(mr)) { | |
b5e81bf5 RD |
679 | mr->device = pd->device; |
680 | mr->pd = pd; | |
681 | mr->uobject = NULL; | |
1da177e4 LT |
682 | atomic_inc(&pd->usecnt); |
683 | atomic_set(&mr->usecnt, 0); | |
684 | } | |
685 | ||
686 | return mr; | |
687 | } | |
688 | EXPORT_SYMBOL(ib_reg_phys_mr); | |
689 | ||
690 | int ib_rereg_phys_mr(struct ib_mr *mr, | |
691 | int mr_rereg_mask, | |
692 | struct ib_pd *pd, | |
693 | struct ib_phys_buf *phys_buf_array, | |
694 | int num_phys_buf, | |
695 | int mr_access_flags, | |
696 | u64 *iova_start) | |
697 | { | |
698 | struct ib_pd *old_pd; | |
699 | int ret; | |
700 | ||
701 | if (!mr->device->rereg_phys_mr) | |
702 | return -ENOSYS; | |
703 | ||
704 | if (atomic_read(&mr->usecnt)) | |
705 | return -EBUSY; | |
706 | ||
707 | old_pd = mr->pd; | |
708 | ||
709 | ret = mr->device->rereg_phys_mr(mr, mr_rereg_mask, pd, | |
710 | phys_buf_array, num_phys_buf, | |
711 | mr_access_flags, iova_start); | |
712 | ||
713 | if (!ret && (mr_rereg_mask & IB_MR_REREG_PD)) { | |
714 | atomic_dec(&old_pd->usecnt); | |
715 | atomic_inc(&pd->usecnt); | |
716 | } | |
717 | ||
718 | return ret; | |
719 | } | |
720 | EXPORT_SYMBOL(ib_rereg_phys_mr); | |
721 | ||
722 | int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr) | |
723 | { | |
724 | return mr->device->query_mr ? | |
725 | mr->device->query_mr(mr, mr_attr) : -ENOSYS; | |
726 | } | |
727 | EXPORT_SYMBOL(ib_query_mr); | |
728 | ||
729 | int ib_dereg_mr(struct ib_mr *mr) | |
730 | { | |
731 | struct ib_pd *pd; | |
732 | int ret; | |
733 | ||
734 | if (atomic_read(&mr->usecnt)) | |
735 | return -EBUSY; | |
736 | ||
737 | pd = mr->pd; | |
738 | ret = mr->device->dereg_mr(mr); | |
739 | if (!ret) | |
740 | atomic_dec(&pd->usecnt); | |
741 | ||
742 | return ret; | |
743 | } | |
744 | EXPORT_SYMBOL(ib_dereg_mr); | |
745 | ||
746 | /* Memory windows */ | |
747 | ||
748 | struct ib_mw *ib_alloc_mw(struct ib_pd *pd) | |
749 | { | |
750 | struct ib_mw *mw; | |
751 | ||
752 | if (!pd->device->alloc_mw) | |
753 | return ERR_PTR(-ENOSYS); | |
754 | ||
755 | mw = pd->device->alloc_mw(pd); | |
756 | if (!IS_ERR(mw)) { | |
b5e81bf5 RD |
757 | mw->device = pd->device; |
758 | mw->pd = pd; | |
759 | mw->uobject = NULL; | |
1da177e4 LT |
760 | atomic_inc(&pd->usecnt); |
761 | } | |
762 | ||
763 | return mw; | |
764 | } | |
765 | EXPORT_SYMBOL(ib_alloc_mw); | |
766 | ||
767 | int ib_dealloc_mw(struct ib_mw *mw) | |
768 | { | |
769 | struct ib_pd *pd; | |
770 | int ret; | |
771 | ||
772 | pd = mw->pd; | |
773 | ret = mw->device->dealloc_mw(mw); | |
774 | if (!ret) | |
775 | atomic_dec(&pd->usecnt); | |
776 | ||
777 | return ret; | |
778 | } | |
779 | EXPORT_SYMBOL(ib_dealloc_mw); | |
780 | ||
781 | /* "Fast" memory regions */ | |
782 | ||
783 | struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd, | |
784 | int mr_access_flags, | |
785 | struct ib_fmr_attr *fmr_attr) | |
786 | { | |
787 | struct ib_fmr *fmr; | |
788 | ||
789 | if (!pd->device->alloc_fmr) | |
790 | return ERR_PTR(-ENOSYS); | |
791 | ||
792 | fmr = pd->device->alloc_fmr(pd, mr_access_flags, fmr_attr); | |
793 | if (!IS_ERR(fmr)) { | |
794 | fmr->device = pd->device; | |
795 | fmr->pd = pd; | |
796 | atomic_inc(&pd->usecnt); | |
797 | } | |
798 | ||
799 | return fmr; | |
800 | } | |
801 | EXPORT_SYMBOL(ib_alloc_fmr); | |
802 | ||
803 | int ib_unmap_fmr(struct list_head *fmr_list) | |
804 | { | |
805 | struct ib_fmr *fmr; | |
806 | ||
807 | if (list_empty(fmr_list)) | |
808 | return 0; | |
809 | ||
810 | fmr = list_entry(fmr_list->next, struct ib_fmr, list); | |
811 | return fmr->device->unmap_fmr(fmr_list); | |
812 | } | |
813 | EXPORT_SYMBOL(ib_unmap_fmr); | |
814 | ||
815 | int ib_dealloc_fmr(struct ib_fmr *fmr) | |
816 | { | |
817 | struct ib_pd *pd; | |
818 | int ret; | |
819 | ||
820 | pd = fmr->pd; | |
821 | ret = fmr->device->dealloc_fmr(fmr); | |
822 | if (!ret) | |
823 | atomic_dec(&pd->usecnt); | |
824 | ||
825 | return ret; | |
826 | } | |
827 | EXPORT_SYMBOL(ib_dealloc_fmr); | |
828 | ||
829 | /* Multicast groups */ | |
830 | ||
831 | int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) | |
832 | { | |
0c33aeed JM |
833 | if (!qp->device->attach_mcast) |
834 | return -ENOSYS; | |
835 | if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD) | |
836 | return -EINVAL; | |
837 | ||
838 | return qp->device->attach_mcast(qp, gid, lid); | |
1da177e4 LT |
839 | } |
840 | EXPORT_SYMBOL(ib_attach_mcast); | |
841 | ||
842 | int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) | |
843 | { | |
0c33aeed JM |
844 | if (!qp->device->detach_mcast) |
845 | return -ENOSYS; | |
846 | if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD) | |
847 | return -EINVAL; | |
848 | ||
849 | return qp->device->detach_mcast(qp, gid, lid); | |
1da177e4 LT |
850 | } |
851 | EXPORT_SYMBOL(ib_detach_mcast); |